26
27/* This program is the user interface to the C compiler and possibly to
28other compilers. It is used because compilation is a complicated procedure
29which involves running several programs and passing temporary files between
30them, forwarding the users switches to those programs selectively,
31and deleting the temporary files at the end.
32
33CC recognizes how to compile each input file by suffixes in the file names.
34Once it knows which kind of compilation to perform, the procedure for
35compilation is specified by a string called a "spec". */
36
37/* A Short Introduction to Adding a Command-Line Option.
38
39 Before adding a command-line option, consider if it is really
40 necessary. Each additional command-line option adds complexity and
41 is difficult to remove in subsequent versions.
42
43 In the following, consider adding the command-line argument
44 `--bar'.
45
46 1. Each command-line option is specified in the specs file. The
47 notation is described below in the comment entitled "The Specs
48 Language". Read it.
49
50 2. In this file, add an entry to "option_map" equating the long
51 `--' argument version and any shorter, single letter version. Read
52 the comments in the declaration of "struct option_map" for an
53 explanation. Do not omit the first `-'.
54
55 3. Look in the "specs" file to determine which program or option
56 list should be given the argument, e.g., "cc1_options". Add the
57 appropriate syntax for the shorter option version to the
58 corresponding "const char *" entry in this file. Omit the first
59 `-' from the option. For example, use `-bar', rather than `--bar'.
60
61 4. If the argument takes an argument, e.g., `--baz argument1',
62 modify either DEFAULT_SWITCH_TAKES_ARG or
63 DEFAULT_WORD_SWITCH_TAKES_ARG in this file. Omit the first `-'
64 from `--baz'.
65
66 5. Document the option in this file's display_help(). If the
67 option is passed to a subprogram, modify its corresponding
68 function, e.g., cppinit.c:print_help() or toplev.c:display_help(),
69 instead.
70
71 6. Compile and test. Make sure that your new specs file is being
72 read. For example, use a debugger to investigate the value of
73 "specs_file" in main(). */
74
75#include "config.h"
76#include "system.h"
77#include "coretypes.h"
78#include "multilib.h" /* before tm.h */
79#include "tm.h"
80#include <signal.h>
81#if ! defined( SIGCHLD ) && defined( SIGCLD )
82# define SIGCHLD SIGCLD
83#endif
84#include "obstack.h"
85#include "intl.h"
86#include "prefix.h"
87#include "gcc.h"
88#include "flags.h"
89
90#ifdef HAVE_SYS_RESOURCE_H
91#include <sys/resource.h>
92#endif
93#if defined (HAVE_DECL_GETRUSAGE) && !HAVE_DECL_GETRUSAGE
94extern int getrusage (int, struct rusage *);
95#endif
96
97/* By default there is no special suffix for target executables. */
98/* FIXME: when autoconf is fixed, remove the host check - dj */
99#if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
100#define HAVE_TARGET_EXECUTABLE_SUFFIX
101#endif
102
103/* By default there is no special suffix for host executables. */
104#ifdef HOST_EXECUTABLE_SUFFIX
105#define HAVE_HOST_EXECUTABLE_SUFFIX
106#else
107#define HOST_EXECUTABLE_SUFFIX ""
108#endif
109
110/* By default, the suffix for target object files is ".o". */
111#ifdef TARGET_OBJECT_SUFFIX
112#define HAVE_TARGET_OBJECT_SUFFIX
113#else
114#define TARGET_OBJECT_SUFFIX ".o"
115#endif
116
117static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
118
119/* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
120#ifndef LIBRARY_PATH_ENV
121#define LIBRARY_PATH_ENV "LIBRARY_PATH"
122#endif
123
124#ifndef HAVE_KILL
125#define kill(p,s) raise(s)
126#endif
127
128/* If a stage of compilation returns an exit status >= 1,
129 compilation of that file ceases. */
130
131#define MIN_FATAL_STATUS 1
132
133/* Flag set by cppspec.c to 1. */
134int is_cpp_driver;
135
136/* Flag saying to pass the greatest exit code returned by a sub-process
137 to the calling program. */
138static int pass_exit_codes;
139
140/* Definition of string containing the arguments given to configure. */
141#include "configargs.h"
142
143/* Flag saying to print the directories gcc will search through looking for
144 programs, libraries, etc. */
145
146static int print_search_dirs;
147
148/* Flag saying to print the full filename of this file
149 as found through our usual search mechanism. */
150
151static const char *print_file_name = NULL;
152
153/* As print_file_name, but search for executable file. */
154
155static const char *print_prog_name = NULL;
156
157/* Flag saying to print the relative path we'd use to
158 find libgcc.a given the current compiler flags. */
159
160static int print_multi_directory;
161
162/* Flag saying to print the relative path we'd use to
163 find OS libraries given the current compiler flags. */
164
165static int print_multi_os_directory;
166
167/* Flag saying to print the list of subdirectories and
168 compiler flags used to select them in a standard form. */
169
170static int print_multi_lib;
171
172/* Flag saying to print the command line options understood by gcc and its
173 sub-processes. */
174
175static int print_help_list;
176
177/* Flag indicating whether we should print the command and arguments */
178
179static int verbose_flag;
180
181/* Flag indicating whether we should ONLY print the command and
182 arguments (like verbose_flag) without executing the command.
183 Displayed arguments are quoted so that the generated command
184 line is suitable for execution. This is intended for use in
185 shell scripts to capture the driver-generated command line. */
186static int verbose_only_flag;
187
188/* Flag indicating to print target specific command line options. */
189
190static int target_help_flag;
191
192/* Flag indicating whether we should report subprocess execution times
193 (if this is supported by the system - see pexecute.c). */
194
195static int report_times;
196
197/* Nonzero means place this string before uses of /, so that include
198 and library files can be found in an alternate location. */
199
200#ifdef TARGET_SYSTEM_ROOT
201static const char *target_system_root = TARGET_SYSTEM_ROOT;
202#else
203static const char *target_system_root = 0;
204#endif
205
206/* Nonzero means pass the updated target_system_root to the compiler. */
207
208static int target_system_root_changed;
209
210/* Nonzero means append this string to target_system_root. */
211
212static const char *target_sysroot_suffix = 0;
213
214/* Nonzero means append this string to target_system_root for headers. */
215
216static const char *target_sysroot_hdrs_suffix = 0;
217
218/* Nonzero means write "temp" files in source directory
219 and use the source file's name in them, and don't delete them. */
220
221static int save_temps_flag;
222
223/* Nonzero means use pipes to communicate between subprocesses.
224 Overridden by either of the above two flags. */
225
226static int use_pipes;
227
228/* The compiler version. */
229
230static const char *compiler_version;
231
232/* The target version specified with -V */
233
234static const char *const spec_version = DEFAULT_TARGET_VERSION;
235
236/* The target machine specified with -b. */
237
238static const char *spec_machine = DEFAULT_TARGET_MACHINE;
239
240/* Nonzero if cross-compiling.
241 When -b is used, the value comes from the `specs' file. */
242
243#ifdef CROSS_COMPILE
244static const char *cross_compile = "1";
245#else
246static const char *cross_compile = "0";
247#endif
248
249#ifdef MODIFY_TARGET_NAME
250
251/* Information on how to alter the target name based on a command-line
252 switch. The only case we support now is simply appending or deleting a
253 string to or from the end of the first part of the configuration name. */
254
255static const struct modify_target
256{
257 const char *const sw;
258 const enum add_del {ADD, DELETE} add_del;
259 const char *const str;
260}
261modify_target[] = MODIFY_TARGET_NAME;
262#endif
263
264/* The number of errors that have occurred; the link phase will not be
265 run if this is nonzero. */
266static int error_count = 0;
267
268/* Greatest exit code of sub-processes that has been encountered up to
269 now. */
270static int greatest_status = 1;
271
272/* This is the obstack which we use to allocate many strings. */
273
274static struct obstack obstack;
275
276/* This is the obstack to build an environment variable to pass to
277 collect2 that describes all of the relevant switches of what to
278 pass the compiler in building the list of pointers to constructors
279 and destructors. */
280
281static struct obstack collect_obstack;
282
283/* These structs are used to collect resource usage information for
284 subprocesses. */
285#ifdef HAVE_GETRUSAGE
286static struct rusage rus, prus;
287#endif
288
289/* Forward declaration for prototypes. */
290struct path_prefix;
291
292static void init_spec (void);
293static void store_arg (const char *, int, int);
294static char *load_specs (const char *);
295static void read_specs (const char *, int);
296static void set_spec (const char *, const char *);
297static struct compiler *lookup_compiler (const char *, size_t, const char *);
298static char *build_search_list (struct path_prefix *, const char *, int);
299static void putenv_from_prefixes (struct path_prefix *, const char *);
300static int access_check (const char *, int);
301static char *find_a_file (struct path_prefix *, const char *, int, int);
302static void add_prefix (struct path_prefix *, const char *, const char *,
303 int, int, int *, int);
304static void add_sysrooted_prefix (struct path_prefix *, const char *,
305 const char *, int, int, int *, int);
306static void translate_options (int *, const char *const **);
307static char *skip_whitespace (char *);
308static void delete_if_ordinary (const char *);
309static void delete_temp_files (void);
310static void delete_failure_queue (void);
311static void clear_failure_queue (void);
312static int check_live_switch (int, int);
313static const char *handle_braces (const char *);
314static inline bool input_suffix_matches (const char *, const char *);
315static inline bool switch_matches (const char *, const char *, int);
316static inline void mark_matching_switches (const char *, const char *, int);
317static inline void process_marked_switches (void);
318static const char *process_brace_body (const char *, const char *, const char *, int, int);
319static const struct spec_function *lookup_spec_function (const char *);
320static const char *eval_spec_function (const char *, const char *);
321static const char *handle_spec_function (const char *);
322static char *save_string (const char *, int);
323static void set_collect_gcc_options (void);
324static int do_spec_1 (const char *, int, const char *);
325static int do_spec_2 (const char *);
326static void do_option_spec (const char *, const char *);
327static void do_self_spec (const char *);
328static const char *find_file (const char *);
329static int is_directory (const char *, const char *, int);
330static const char *validate_switches (const char *);
331static void validate_all_switches (void);
332static inline void validate_switches_from_spec (const char *);
333static void give_switch (int, int);
334static int used_arg (const char *, int);
335static int default_arg (const char *, int);
336static void set_multilib_dir (void);
337static void print_multilib_info (void);
338static void perror_with_name (const char *);
339static void pfatal_pexecute (const char *, const char *) ATTRIBUTE_NORETURN;
340static void notice (const char *, ...) ATTRIBUTE_PRINTF_1;
341static void display_help (void);
342static void add_preprocessor_option (const char *, int);
343static void add_assembler_option (const char *, int);
344static void add_linker_option (const char *, int);
345static void process_command (int, const char **);
346static int execute (void);
347static void alloc_args (void);
348static void clear_args (void);
349static void fatal_error (int);
350#ifdef ENABLE_SHARED_LIBGCC
351static void init_gcc_specs (struct obstack *, const char *, const char *,
352 const char *);
353#endif
354#if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
355static const char *convert_filename (const char *, int, int);
356#endif
357
358static const char *if_exists_spec_function (int, const char **);
359static const char *if_exists_else_spec_function (int, const char **);
360
361/* The Specs Language
362
363Specs are strings containing lines, each of which (if not blank)
364is made up of a program name, and arguments separated by spaces.
365The program name must be exact and start from root, since no path
366is searched and it is unreliable to depend on the current working directory.
367Redirection of input or output is not supported; the subprograms must
368accept filenames saying what files to read and write.
369
370In addition, the specs can contain %-sequences to substitute variable text
371or for conditional text. Here is a table of all defined %-sequences.
372Note that spaces are not generated automatically around the results of
373expanding these sequences; therefore, you can concatenate them together
374or with constant text in a single argument.
375
376 %% substitute one % into the program name or argument.
377 %i substitute the name of the input file being processed.
378 %b substitute the basename of the input file being processed.
379 This is the substring up to (and not including) the last period
380 and not including the directory.
381 %B same as %b, but include the file suffix (text after the last period).
382 %gSUFFIX
383 substitute a file name that has suffix SUFFIX and is chosen
384 once per compilation, and mark the argument a la %d. To reduce
385 exposure to denial-of-service attacks, the file name is now
386 chosen in a way that is hard to predict even when previously
387 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
388 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
389 the regexp "[.A-Za-z]*%O"; "%O" is treated exactly as if it
390 had been pre-processed. Previously, %g was simply substituted
391 with a file name chosen once per compilation, without regard
392 to any appended suffix (which was therefore treated just like
393 ordinary text), making such attacks more likely to succeed.
394 %|SUFFIX
395 like %g, but if -pipe is in effect, expands simply to "-".
396 %mSUFFIX
397 like %g, but if -pipe is in effect, expands to nothing. (We have both
398 %| and %m to accommodate differences between system assemblers; see
399 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
400 %uSUFFIX
401 like %g, but generates a new temporary file name even if %uSUFFIX
402 was already seen.
403 %USUFFIX
404 substitutes the last file name generated with %uSUFFIX, generating a
405 new one if there is no such last file name. In the absence of any
406 %uSUFFIX, this is just like %gSUFFIX, except they don't share
407 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
408 would involve the generation of two distinct file names, one
409 for each `%g.s' and another for each `%U.s'. Previously, %U was
410 simply substituted with a file name chosen for the previous %u,
411 without regard to any appended suffix.
412 %jSUFFIX
413 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
414 writable, and if save-temps is off; otherwise, substitute the name
415 of a temporary file, just like %u. This temporary file is not
416 meant for communication between processes, but rather as a junk
417 disposal mechanism.
418 %.SUFFIX
419 substitutes .SUFFIX for the suffixes of a matched switch's args when
420 it is subsequently output with %*. SUFFIX is terminated by the next
421 space or %.
422 %d marks the argument containing or following the %d as a
423 temporary file name, so that that file will be deleted if CC exits
424 successfully. Unlike %g, this contributes no text to the argument.
425 %w marks the argument containing or following the %w as the
426 "output file" of this compilation. This puts the argument
427 into the sequence of arguments that %o will substitute later.
428 %V indicates that this compilation produces no "output file".
429 %W{...}
430 like %{...} but mark last argument supplied within
431 as a file to be deleted on failure.
432 %o substitutes the names of all the output files, with spaces
433 automatically placed around them. You should write spaces
434 around the %o as well or the results are undefined.
435 %o is for use in the specs for running the linker.
436 Input files whose names have no recognized suffix are not compiled
437 at all, but they are included among the output files, so they will
438 be linked.
439 %O substitutes the suffix for object files. Note that this is
440 handled specially when it immediately follows %g, %u, or %U
441 (with or without a suffix argument) because of the need for
442 those to form complete file names. The handling is such that
443 %O is treated exactly as if it had already been substituted,
444 except that %g, %u, and %U do not currently support additional
445 SUFFIX characters following %O as they would following, for
446 example, `.o'.
447 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
448 (made from TARGET_SYSTEM_ROOT), and -isystem (made from COMPILER_PATH
449 and -B options) as necessary.
450 %s current argument is the name of a library or startup file of some sort.
451 Search for that file in a standard list of directories
452 and substitute the full name found.
453 %eSTR Print STR as an error message. STR is terminated by a newline.
454 Use this when inconsistent options are detected.
455 %nSTR Print STR as a notice. STR is terminated by a newline.
456 %x{OPTION} Accumulate an option for %X.
457 %X Output the accumulated linker options specified by compilations.
458 %Y Output the accumulated assembler options specified by compilations.
459 %Z Output the accumulated preprocessor options specified by compilations.
460 %a process ASM_SPEC as a spec.
461 This allows config.h to specify part of the spec for running as.
462 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
463 used here. This can be used to run a post-processor after the
464 assembler has done its job.
465 %D Dump out a -L option for each directory in startfile_prefixes.
466 If multilib_dir is set, extra entries are generated with it affixed.
467 %l process LINK_SPEC as a spec.
468 %L process LIB_SPEC as a spec.
469 %G process LIBGCC_SPEC as a spec.
470 %M output multilib_dir with directory separators replaced with "_";
471 if multilib_dir is not set or is ".", output "".
472 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
473 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
474 %C process CPP_SPEC as a spec.
475 %1 process CC1_SPEC as a spec.
476 %2 process CC1PLUS_SPEC as a spec.
477 %* substitute the variable part of a matched option. (See below.)
478 Note that each comma in the substituted string is replaced by
479 a single space.
480 %<S remove all occurrences of -S from the command line.
481 Note - this command is position dependent. % commands in the
482 spec string before this one will see -S, % commands in the
483 spec string after this one will not.
484 %<S* remove all occurrences of all switches beginning with -S from the
485 command line.
486 %:function(args)
487 Call the named function FUNCTION, passing it ARGS. ARGS is
488 first processed as a nested spec string, then split into an
489 argument vector in the usual fashion. The function returns
490 a string which is processed as if it had appeared literally
491 as part of the current spec.
492 %{S} substitutes the -S switch, if that switch was given to CC.
493 If that switch was not specified, this substitutes nothing.
494 Here S is a metasyntactic variable.
495 %{S*} substitutes all the switches specified to CC whose names start
496 with -S. This is used for -o, -I, etc; switches that take
497 arguments. CC considers `-o foo' as being one switch whose
498 name starts with `o'. %{o*} would substitute this text,
499 including the space; thus, two arguments would be generated.
500 %{S*&T*} likewise, but preserve order of S and T options (the order
501 of S and T in the spec is not significant). Can be any number
502 of ampersand-separated variables; for each the wild card is
503 optional. Useful for CPP as %{D*&U*&A*}.
504
505 %{S:X} substitutes X, if the -S switch was given to CC.
506 %{!S:X} substitutes X, if the -S switch was NOT given to CC.
507 %{S*:X} substitutes X if one or more switches whose names start
508 with -S was given to CC. Normally X is substituted only
509 once, no matter how many such switches appeared. However,
510 if %* appears somewhere in X, then X will be substituted
511 once for each matching switch, with the %* replaced by the
512 part of that switch that matched the '*'.
513 %{.S:X} substitutes X, if processing a file with suffix S.
514 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
515
516 %{S|T:X} substitutes X if either -S or -T was given to CC. This may be
517 combined with !, ., and * as above binding stronger than the OR.
518 If %* appears in X, all of the alternatives must be starred, and
519 only the first matching alternative is substituted.
520 %{S:X; if S was given to CC, substitutes X;
521 T:Y; else if T was given to CC, substitutes Y;
522 :D} else substitutes D. There can be as many clauses as you need.
523 This may be combined with ., !, |, and * as above.
524
525 %(Spec) processes a specification defined in a specs file as *Spec:
526 %[Spec] as above, but put __ around -D arguments
527
528The conditional text X in a %{S:X} or similar construct may contain
529other nested % constructs or spaces, or even newlines. They are
530processed as usual, as described above. Trailing white space in X is
531ignored. White space may also appear anywhere on the left side of the
532colon in these constructs, except between . or * and the corresponding
533word.
534
535The -O, -f, -m, and -W switches are handled specifically in these
536constructs. If another value of -O or the negated form of a -f, -m, or
537-W switch is found later in the command line, the earlier switch
538value is ignored, except with {S*} where S is just one letter; this
539passes all matching options.
540
541The character | at the beginning of the predicate text is used to indicate
542that a command should be piped to the following command, but only if -pipe
543is specified.
544
545Note that it is built into CC which switches take arguments and which
546do not. You might think it would be useful to generalize this to
547allow each compiler's spec to say which switches take arguments. But
548this cannot be done in a consistent fashion. CC cannot even decide
549which input files have been specified without knowing which switches
550take arguments, and it must know which input files to compile in order
551to tell which compilers to run.
552
553CC also knows implicitly that arguments starting in `-l' are to be
554treated as compiler output files, and passed to the linker in their
555proper position among the other output files. */
556
557/* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
558
559/* config.h can define ASM_SPEC to provide extra args to the assembler
560 or extra switch-translations. */
561#ifndef ASM_SPEC
562#define ASM_SPEC ""
563#endif
564
565/* config.h can define ASM_FINAL_SPEC to run a post processor after
566 the assembler has run. */
567#ifndef ASM_FINAL_SPEC
568#define ASM_FINAL_SPEC ""
569#endif
570
571/* config.h can define CPP_SPEC to provide extra args to the C preprocessor
572 or extra switch-translations. */
573#ifndef CPP_SPEC
574#define CPP_SPEC ""
575#endif
576
577/* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
578 or extra switch-translations. */
579#ifndef CC1_SPEC
580#define CC1_SPEC ""
581#endif
582
583/* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
584 or extra switch-translations. */
585#ifndef CC1PLUS_SPEC
586#define CC1PLUS_SPEC ""
587#endif
588
589/* config.h can define LINK_SPEC to provide extra args to the linker
590 or extra switch-translations. */
591#ifndef LINK_SPEC
592#define LINK_SPEC ""
593#endif
594
595/* config.h can define LIB_SPEC to override the default libraries. */
596#ifndef LIB_SPEC
597#define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
598#endif
599
600/* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
601 included. */
602#ifndef LIBGCC_SPEC
603#if defined(LINK_LIBGCC_SPECIAL) || defined(LINK_LIBGCC_SPECIAL_1)
604/* Have gcc do the search for libgcc.a. */
605#define LIBGCC_SPEC "libgcc.a%s"
606#else
607#define LIBGCC_SPEC "-lgcc"
608#endif
609#endif
610
611/* config.h can define STARTFILE_SPEC to override the default crt0 files. */
612#ifndef STARTFILE_SPEC
613#define STARTFILE_SPEC \
614 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
615#endif
616
617/* config.h can define SWITCHES_NEED_SPACES to control which options
618 require spaces between the option and the argument. */
619#ifndef SWITCHES_NEED_SPACES
620#define SWITCHES_NEED_SPACES ""
621#endif
622
623/* config.h can define ENDFILE_SPEC to override the default crtn files. */
624#ifndef ENDFILE_SPEC
625#define ENDFILE_SPEC ""
626#endif
627
628#ifndef LINKER_NAME
629#define LINKER_NAME "collect2"
630#endif
631
632/* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
633 to the assembler. */
634#ifndef ASM_DEBUG_SPEC
635# if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
636 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
637# define ASM_DEBUG_SPEC \
638 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
639 ? "%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}" \
640 : "%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}")
641# else
642# if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
643# define ASM_DEBUG_SPEC "%{g*:--gstabs}"
644# endif
645# if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
646# define ASM_DEBUG_SPEC "%{g*:--gdwarf2}"
647# endif
648# endif
649#endif
650#ifndef ASM_DEBUG_SPEC
651# define ASM_DEBUG_SPEC ""
652#endif
653
654/* Here is the spec for running the linker, after compiling all files. */
655
656/* This is overridable by the target in case they need to specify the
657 -lgcc and -lc order specially, yet not require them to override all
658 of LINK_COMMAND_SPEC. */
659#ifndef LINK_GCC_C_SEQUENCE_SPEC
660#define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
661#endif
662
663#ifndef LINK_PIE_SPEC
664#ifdef HAVE_LD_PIE
665#define LINK_PIE_SPEC "%{pie:-pie} "
666#else
667#define LINK_PIE_SPEC "%{pie:} "
668#endif
669#endif
670
671/* -u* was put back because both BSD and SysV seem to support it. */
672/* %{static:} simply prevents an error message if the target machine
673 doesn't handle -static. */
674/* We want %{T*} after %{L*} and %D so that it can be used to specify linker
675 scripts which exist in user specified directories, or in standard
676 directories. */
677#ifndef LINK_COMMAND_SPEC
678#define LINK_COMMAND_SPEC "\
679%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
680 %(linker) %l " LINK_PIE_SPEC "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\
681 %{s} %{t} %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
682 %{static:} %{L*} %(link_libgcc) %o %{fprofile-arcs|fprofile-generate:-lgcov}\
683 %{!nostdlib:%{!nodefaultlibs:%(link_gcc_c_sequence)}}\
684 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
685#endif
686
687#ifndef LINK_LIBGCC_SPEC
688# ifdef LINK_LIBGCC_SPECIAL
689/* Don't generate -L options for startfile prefix list. */
690# define LINK_LIBGCC_SPEC ""
691# else
692/* Do generate them. */
693# define LINK_LIBGCC_SPEC "%D"
694# endif
695#endif
696
697#ifndef STARTFILE_PREFIX_SPEC
698# define STARTFILE_PREFIX_SPEC ""
699#endif
700
701#ifndef SYSROOT_SUFFIX_SPEC
702# define SYSROOT_SUFFIX_SPEC ""
703#endif
704
705#ifndef SYSROOT_HEADERS_SUFFIX_SPEC
706# define SYSROOT_HEADERS_SUFFIX_SPEC ""
707#endif
708
709static const char *asm_debug;
710static const char *cpp_spec = CPP_SPEC;
711static const char *cc1_spec = CC1_SPEC;
712static const char *cc1plus_spec = CC1PLUS_SPEC;
713static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
714static const char *asm_spec = ASM_SPEC;
715static const char *asm_final_spec = ASM_FINAL_SPEC;
716static const char *link_spec = LINK_SPEC;
717static const char *lib_spec = LIB_SPEC;
718static const char *libgcc_spec = LIBGCC_SPEC;
719static const char *endfile_spec = ENDFILE_SPEC;
720static const char *startfile_spec = STARTFILE_SPEC;
721static const char *switches_need_spaces = SWITCHES_NEED_SPACES;
722static const char *linker_name_spec = LINKER_NAME;
723static const char *link_command_spec = LINK_COMMAND_SPEC;
724static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
725static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
726static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
727static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
728
729/* Standard options to cpp, cc1, and as, to reduce duplication in specs.
730 There should be no need to override these in target dependent files,
731 but we need to copy them to the specs file so that newer versions
732 of the GCC driver can correctly drive older tool chains with the
733 appropriate -B options. */
734
735/* When cpplib handles traditional preprocessing, get rid of this, and
736 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
737 that we default the front end language better. */
738static const char *trad_capable_cpp =
739"cc1 -E %{traditional|ftraditional|traditional-cpp:-traditional-cpp}";
740
741/* We don't wrap .d files in %W{} since a missing .d file, and
742 therefore no dependency entry, confuses make into thinking a .o
743 file that happens to exist is up-to-date. */
744static const char *cpp_unique_options =
745"%{C|CC:%{!E:%eGCC does not support -C or -CC without -E}}\
746 %{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*} %{P} %I\
747 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
748 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
749 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
750 %{!E:%{!M:%{!MM:%{MD|MMD:%{o*:-MQ %*}}}}}\
751 %{remap} %{g3:-dD} %{H} %C %{D*&U*&A*} %{i*} %Z %i\
752 %{E|M|MM:%W{o*}}";
753
754/* This contains cpp options which are common with cc1_options and are passed
755 only when preprocessing only to avoid duplication. We pass the cc1 spec
756 options to the preprocessor so that it the cc1 spec may manipulate
757 options used to set target flags. Those special target flags settings may
758 in turn cause preprocessor symbols to be defined specially. */
759static const char *cpp_options =
760"%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
761 %{f*} %{g*:%{!g0:%{!fno-working-directory:-fworking-directory}}} %{O*}\
762 %{undef}";
763
764/* This contains cpp options which are not passed when the preprocessor
765 output will be used by another program. */
766static const char *cpp_debug_options = "%{d*}";
767
768/* NB: This is shared amongst all front-ends. */
769static const char *cc1_options =
770"%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
771 %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\
772 %{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}%{!c:%{!S:-auxbase %b}}\
773 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
774 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
775 %{Qn:-fno-ident} %{--help:--help}\
776 %{--target-help:--target-help}\
777 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
778 %{fsyntax-only:-o %j} %{-param*}";
779
780static const char *asm_options =
781"%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
782
783static const char *invoke_as =
784#ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
785"%{!S:-o %|.s |\n as %(asm_options) %|.s %A }";
786#else
787"%{!S:-o %|.s |\n as %(asm_options) %m.s %A }";
788#endif
789
790/* Some compilers have limits on line lengths, and the multilib_select
791 and/or multilib_matches strings can be very long, so we build them at
792 run time. */
793static struct obstack multilib_obstack;
794static const char *multilib_select;
795static const char *multilib_matches;
796static const char *multilib_defaults;
797static const char *multilib_exclusions;
798
799/* Check whether a particular argument is a default argument. */
800
801#ifndef MULTILIB_DEFAULTS
802#define MULTILIB_DEFAULTS { "" }
803#endif
804
805static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
806
807#ifndef DRIVER_SELF_SPECS
808#define DRIVER_SELF_SPECS ""
809#endif
810
811static const char *const driver_self_specs[] = { DRIVER_SELF_SPECS };
812
813#ifndef OPTION_DEFAULT_SPECS
814#define OPTION_DEFAULT_SPECS { "", "" }
815#endif
816
817struct default_spec
818{
819 const char *name;
820 const char *spec;
821};
822
823static const struct default_spec
824 option_default_specs[] = { OPTION_DEFAULT_SPECS };
825
826struct user_specs
827{
828 struct user_specs *next;
829 const char *filename;
830};
831
832static struct user_specs *user_specs_head, *user_specs_tail;
833
834#ifndef SWITCH_TAKES_ARG
835#define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR)
836#endif
837
838#ifndef WORD_SWITCH_TAKES_ARG
839#define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
840#endif
841
842#ifdef HAVE_TARGET_EXECUTABLE_SUFFIX
843/* This defines which switches stop a full compilation. */
844#define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \
845 ((CHAR) == 'c' || (CHAR) == 'S')
846
847#ifndef SWITCH_CURTAILS_COMPILATION
848#define SWITCH_CURTAILS_COMPILATION(CHAR) \
849 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR)
850#endif
851#endif
852
853/* Record the mapping from file suffixes for compilation specs. */
854
855struct compiler
856{
857 const char *suffix; /* Use this compiler for input files
858 whose names end in this suffix. */
859
860 const char *spec; /* To use this compiler, run this spec. */
861
862 const char *cpp_spec; /* If non-NULL, substitute this spec
863 for `%C', rather than the usual
864 cpp_spec. */
865};
866
867/* Pointer to a vector of `struct compiler' that gives the spec for
868 compiling a file, based on its suffix.
869 A file that does not end in any of these suffixes will be passed
870 unchanged to the loader and nothing else will be done to it.
871
872 An entry containing two 0s is used to terminate the vector.
873
874 If multiple entries match a file, the last matching one is used. */
875
876static struct compiler *compilers;
877
878/* Number of entries in `compilers', not counting the null terminator. */
879
880static int n_compilers;
881
882/* The default list of file name suffixes and their compilation specs. */
883
884static const struct compiler default_compilers[] =
885{
886 /* Add lists of suffixes of known languages here. If those languages
887 were not present when we built the driver, we will hit these copies
888 and be given a more meaningful error than "file not used since
889 linking is not done". */
890 {".m", "#Objective-C", 0}, {".mi", "#Objective-C", 0},
891 {".cc", "#C++", 0}, {".cxx", "#C++", 0}, {".cpp", "#C++", 0},
892 {".cp", "#C++", 0}, {".c++", "#C++", 0}, {".C", "#C++", 0},
893 {".CPP", "#C++", 0}, {".ii", "#C++", 0},
894 {".ads", "#Ada", 0}, {".adb", "#Ada", 0},
895 {".f", "#Fortran", 0}, {".for", "#Fortran", 0}, {".fpp", "#Fortran", 0},
896 {".F", "#Fortran", 0}, {".FOR", "#Fortran", 0}, {".FPP", "#Fortran", 0},
897 {".r", "#Ratfor", 0},
898 {".p", "#Pascal", 0}, {".pas", "#Pascal", 0},
899 {".java", "#Java", 0}, {".class", "#Java", 0},
900 {".zip", "#Java", 0}, {".jar", "#Java", 0},
901 /* Next come the entries for C. */
902 {".c", "@c", 0},
903 {"@c",
904 /* cc1 has an integrated ISO C preprocessor. We should invoke the
905 external preprocessor if -save-temps is given. */
906 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
907 %{!E:%{!M:%{!MM:\
908 %{traditional|ftraditional:\
909%eGNU C no longer supports -traditional without -E}\
910 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
911 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\
912 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} \
913 %(cc1_options)}\
914 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
915 cc1 %(cpp_unique_options) %(cc1_options)}}}\
916 %{!fsyntax-only:%(invoke_as)}}}}", 0},
917 {"-",
918 "%{!E:%e-E or -x required when input is from standard input}\
919 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0},
920 {".h", "@c-header", 0},
921 {"@c-header",
922 /* cc1 has an integrated ISO C preprocessor. We should invoke the
923 external preprocessor if -save-temps is given. */
924 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
925 %{!E:%{!M:%{!MM:\
926 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
927 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\
928 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} \
929 %(cc1_options)\
930 -o %g.s %{!o*:--output-pch=%i.gch}\
931 %W{o*:--output-pch=%*}%V}\
932 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
933 cc1 %(cpp_unique_options) %(cc1_options)\
934 -o %g.s %{!o*:--output-pch=%i.gch}\
935 %W{o*:--output-pch=%*}%V}}}}}}", 0},
936 {".i", "@cpp-output", 0},
937 {"@cpp-output",
938 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0},
939 {".s", "@assembler", 0},
940 {"@assembler",
941 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0},
942 {".S", "@assembler-with-cpp", 0},
943 {"@assembler-with-cpp",
944#ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
945 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
946 %{E|M|MM:%(cpp_debug_options)}\
947 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
948 as %(asm_debug) %(asm_options) %|.s %A }}}}"
949#else
950 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
951 %{E|M|MM:%(cpp_debug_options)}\
952 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
953 as %(asm_debug) %(asm_options) %m.s %A }}}}"
954#endif
955 , 0},
956
957#include "specs.h"
958 /* Mark end of table. */
959 {0, 0, 0}
960};
961
962/* Number of elements in default_compilers, not counting the terminator. */
963
964static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
965
966/* A vector of options to give to the linker.
967 These options are accumulated by %x,
968 and substituted into the linker command with %X. */
969static int n_linker_options;
970static char **linker_options;
971
972/* A vector of options to give to the assembler.
973 These options are accumulated by -Wa,
974 and substituted into the assembler command with %Y. */
975static int n_assembler_options;
976static char **assembler_options;
977
978/* A vector of options to give to the preprocessor.
979 These options are accumulated by -Wp,
980 and substituted into the preprocessor command with %Z. */
981static int n_preprocessor_options;
982static char **preprocessor_options;
983
984/* Define how to map long options into short ones. */
985
986/* This structure describes one mapping. */
987struct option_map
988{
989 /* The long option's name. */
990 const char *const name;
991 /* The equivalent short option. */
992 const char *const equivalent;
993 /* Argument info. A string of flag chars; NULL equals no options.
994 a => argument required.
995 o => argument optional.
996 j => join argument to equivalent, making one word.
997 * => require other text after NAME as an argument. */
998 const char *const arg_info;
999};
1000
1001/* This is the table of mappings. Mappings are tried sequentially
1002 for each option encountered; the first one that matches, wins. */
1003
1004static const struct option_map option_map[] =
1005 {
1006 {"--all-warnings", "-Wall", 0},
1007 {"--ansi", "-ansi", 0},
1008 {"--assemble", "-S", 0},
1009 {"--assert", "-A", "a"},
1010 {"--classpath", "-fclasspath=", "aj"},
1011 {"--bootclasspath", "-fbootclasspath=", "aj"},
1012 {"--CLASSPATH", "-fclasspath=", "aj"},
1013 {"--comments", "-C", 0},
1014 {"--comments-in-macros", "-CC", 0},
1015 {"--compile", "-c", 0},
1016 {"--debug", "-g", "oj"},
1017 {"--define-macro", "-D", "aj"},
1018 {"--dependencies", "-M", 0},
1019 {"--dump", "-d", "a"},
1020 {"--dumpbase", "-dumpbase", "a"},
1021 {"--entry", "-e", 0},
1022 {"--extra-warnings", "-W", 0},
1023 {"--for-assembler", "-Wa", "a"},
1024 {"--for-linker", "-Xlinker", "a"},
1025 {"--force-link", "-u", "a"},
1026 {"--imacros", "-imacros", "a"},
1027 {"--include", "-include", "a"},
1028 {"--include-barrier", "-I-", 0},
1029 {"--include-directory", "-I", "aj"},
1030 {"--include-directory-after", "-idirafter", "a"},
1031 {"--include-prefix", "-iprefix", "a"},
1032 {"--include-with-prefix", "-iwithprefix", "a"},
1033 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
1034 {"--include-with-prefix-after", "-iwithprefix", "a"},
1035 {"--language", "-x", "a"},
1036 {"--library-directory", "-L", "a"},
1037 {"--machine", "-m", "aj"},
1038 {"--machine-", "-m", "*j"},
1039 {"--no-integrated-cpp", "-no-integrated-cpp", 0},
1040 {"--no-line-commands", "-P", 0},
1041 {"--no-precompiled-includes", "-noprecomp", 0},
1042 {"--no-standard-includes", "-nostdinc", 0},
1043 {"--no-standard-libraries", "-nostdlib", 0},
1044 {"--no-warnings", "-w", 0},
1045 {"--optimize", "-O", "oj"},
1046 {"--output", "-o", "a"},
1047 {"--output-class-directory", "-foutput-class-dir=", "ja"},
1048 {"--param", "--param", "a"},
1049 {"--pedantic", "-pedantic", 0},
1050 {"--pedantic-errors", "-pedantic-errors", 0},
1051 {"--pie", "-pie", 0},
1052 {"--pipe", "-pipe", 0},
1053 {"--prefix", "-B", "a"},
1054 {"--preprocess", "-E", 0},
1055 {"--print-search-dirs", "-print-search-dirs", 0},
1056 {"--print-file-name", "-print-file-name=", "aj"},
1057 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
1058 {"--print-missing-file-dependencies", "-MG", 0},
1059 {"--print-multi-lib", "-print-multi-lib", 0},
1060 {"--print-multi-directory", "-print-multi-directory", 0},
1061 {"--print-multi-os-directory", "-print-multi-os-directory", 0},
1062 {"--print-prog-name", "-print-prog-name=", "aj"},
1063 {"--profile", "-p", 0},
1064 {"--profile-blocks", "-a", 0},
1065 {"--quiet", "-q", 0},
1066 {"--resource", "-fcompile-resource=", "aj"},
1067 {"--save-temps", "-save-temps", 0},
1068 {"--shared", "-shared", 0},
1069 {"--silent", "-q", 0},
1070 {"--specs", "-specs=", "aj"},
1071 {"--static", "-static", 0},
1072 {"--std", "-std=", "aj"},
1073 {"--symbolic", "-symbolic", 0},
1074 {"--time", "-time", 0},
1075 {"--trace-includes", "-H", 0},
1076 {"--traditional", "-traditional", 0},
1077 {"--traditional-cpp", "-traditional-cpp", 0},
1078 {"--trigraphs", "-trigraphs", 0},
1079 {"--undefine-macro", "-U", "aj"},
1080 {"--user-dependencies", "-MM", 0},
1081 {"--verbose", "-v", 0},
1082 {"--warn-", "-W", "*j"},
1083 {"--write-dependencies", "-MD", 0},
1084 {"--write-user-dependencies", "-MMD", 0},
1085 {"--", "-f", "*j"}
1086 };
1087
1088
1089#ifdef TARGET_OPTION_TRANSLATE_TABLE
1090static const struct {
1091 const char *const option_found;
1092 const char *const replacements;
1093} target_option_translations[] =
1094{
1095 TARGET_OPTION_TRANSLATE_TABLE,
1096 { 0, 0 }
1097};
1098#endif
1099
1100/* Translate the options described by *ARGCP and *ARGVP.
1101 Make a new vector and store it back in *ARGVP,
1102 and store its length in *ARGVC. */
1103
1104static void
1105translate_options (int *argcp, const char *const **argvp)
1106{
1107 int i;
1108 int argc = *argcp;
1109 const char *const *argv = *argvp;
1110 int newvsize = (argc + 2) * 2 * sizeof (const char *);
1111 const char **newv = xmalloc (newvsize);
1112 int newindex = 0;
1113
1114 i = 0;
1115 newv[newindex++] = argv[i++];
1116
1117 while (i < argc)
1118 {
1119#ifdef TARGET_OPTION_TRANSLATE_TABLE
1120 int tott_idx;
1121
1122 for (tott_idx = 0;
1123 target_option_translations[tott_idx].option_found;
1124 tott_idx++)
1125 {
1126 if (strcmp (target_option_translations[tott_idx].option_found,
1127 argv[i]) == 0)
1128 {
1129 int spaces = 1;
1130 const char *sp;
1131 char *np;
1132
1133 for (sp = target_option_translations[tott_idx].replacements;
1134 *sp; sp++)
1135 {
1136 if (*sp == ' ')
1137 spaces ++;
1138 }
1139
1140 newvsize += spaces * sizeof (const char *);
1141 newv = xrealloc (newv, newvsize);
1142
1143 sp = target_option_translations[tott_idx].replacements;
1144 np = xstrdup (sp);
1145
1146 while (1)
1147 {
1148 while (*np == ' ')
1149 np++;
1150 if (*np == 0)
1151 break;
1152 newv[newindex++] = np;
1153 while (*np != ' ' && *np)
1154 np++;
1155 if (*np == 0)
1156 break;
1157 *np++ = 0;
1158 }
1159
1160 i ++;
1161 break;
1162 }
1163 }
1164 if (target_option_translations[tott_idx].option_found)
1165 continue;
1166#endif
1167
1168 /* Translate -- options. */
1169 if (argv[i][0] == '-' && argv[i][1] == '-')
1170 {
1171 size_t j;
1172 /* Find a mapping that applies to this option. */
1173 for (j = 0; j < ARRAY_SIZE (option_map); j++)
1174 {
1175 size_t optlen = strlen (option_map[j].name);
1176 size_t arglen = strlen (argv[i]);
1177 size_t complen = arglen > optlen ? optlen : arglen;
1178 const char *arginfo = option_map[j].arg_info;
1179
1180 if (arginfo == 0)
1181 arginfo = "";
1182
1183 if (!strncmp (argv[i], option_map[j].name, complen))
1184 {
1185 const char *arg = 0;
1186
1187 if (arglen < optlen)
1188 {
1189 size_t k;
1190 for (k = j + 1; k < ARRAY_SIZE (option_map); k++)
1191 if (strlen (option_map[k].name) >= arglen
1192 && !strncmp (argv[i], option_map[k].name, arglen))
1193 {
1194 error ("ambiguous abbreviation %s", argv[i]);
1195 break;
1196 }
1197
1198 if (k != ARRAY_SIZE (option_map))
1199 break;
1200 }
1201
1202 if (arglen > optlen)
1203 {
1204 /* If the option has an argument, accept that. */
1205 if (argv[i][optlen] == '=')
1206 arg = argv[i] + optlen + 1;
1207
1208 /* If this mapping requires extra text at end of name,
1209 accept that as "argument". */
1210 else if (strchr (arginfo, '*') != 0)
1211 arg = argv[i] + optlen;
1212
1213 /* Otherwise, extra text at end means mismatch.
1214 Try other mappings. */
1215 else
1216 continue;
1217 }
1218
1219 else if (strchr (arginfo, '*') != 0)
1220 {
1221 error ("incomplete `%s' option", option_map[j].name);
1222 break;
1223 }
1224
1225 /* Handle arguments. */
1226 if (strchr (arginfo, 'a') != 0)
1227 {
1228 if (arg == 0)
1229 {
1230 if (i + 1 == argc)
1231 {
1232 error ("missing argument to `%s' option",
1233 option_map[j].name);
1234 break;
1235 }
1236
1237 arg = argv[++i];
1238 }
1239 }
1240 else if (strchr (arginfo, '*') != 0)
1241 ;
1242 else if (strchr (arginfo, 'o') == 0)
1243 {
1244 if (arg != 0)
1245 error ("extraneous argument to `%s' option",
1246 option_map[j].name);
1247 arg = 0;
1248 }
1249
1250 /* Store the translation as one argv elt or as two. */
1251 if (arg != 0 && strchr (arginfo, 'j') != 0)
1252 newv[newindex++] = concat (option_map[j].equivalent, arg,
1253 NULL);
1254 else if (arg != 0)
1255 {
1256 newv[newindex++] = option_map[j].equivalent;
1257 newv[newindex++] = arg;
1258 }
1259 else
1260 newv[newindex++] = option_map[j].equivalent;
1261
1262 break;
1263 }
1264 }
1265 i++;
1266 }
1267
1268 /* Handle old-fashioned options--just copy them through,
1269 with their arguments. */
1270 else if (argv[i][0] == '-')
1271 {
1272 const char *p = argv[i] + 1;
1273 int c = *p;
1274 int nskip = 1;
1275
1276 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
1277 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
1278 else if (WORD_SWITCH_TAKES_ARG (p))
1279 nskip += WORD_SWITCH_TAKES_ARG (p);
1280 else if ((c == 'B' || c == 'b' || c == 'x')
1281 && p[1] == 0)
1282 nskip += 1;
1283 else if (! strcmp (p, "Xlinker"))
1284 nskip += 1;
1285 else if (! strcmp (p, "Xpreprocessor"))
1286 nskip += 1;
1287 else if (! strcmp (p, "Xassembler"))
1288 nskip += 1;
1289
1290 /* Watch out for an option at the end of the command line that
1291 is missing arguments, and avoid skipping past the end of the
1292 command line. */
1293 if (nskip + i > argc)
1294 nskip = argc - i;
1295
1296 while (nskip > 0)
1297 {
1298 newv[newindex++] = argv[i++];
1299 nskip--;
1300 }
1301 }
1302 else
1303 /* Ordinary operands, or +e options. */
1304 newv[newindex++] = argv[i++];
1305 }
1306
1307 newv[newindex] = 0;
1308
1309 *argvp = newv;
1310 *argcp = newindex;
1311}
1312
1313static char *
1314skip_whitespace (char *p)
1315{
1316 while (1)
1317 {
1318 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1319 be considered whitespace. */
1320 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1321 return p + 1;
1322 else if (*p == '\n' || *p == ' ' || *p == '\t')
1323 p++;
1324 else if (*p == '#')
1325 {
1326 while (*p != '\n')
1327 p++;
1328 p++;
1329 }
1330 else
1331 break;
1332 }
1333
1334 return p;
1335}
1336/* Structures to keep track of prefixes to try when looking for files. */
1337
1338struct prefix_list
1339{
1340 const char *prefix; /* String to prepend to the path. */
1341 struct prefix_list *next; /* Next in linked list. */
1342 int require_machine_suffix; /* Don't use without machine_suffix. */
1343 /* 2 means try both machine_suffix and just_machine_suffix. */
1344 int *used_flag_ptr; /* 1 if a file was found with this prefix. */
1345 int priority; /* Sort key - priority within list. */
1346 int os_multilib; /* 1 if OS multilib scheme should be used,
1347 0 for GCC multilib scheme. */
1348};
1349
1350struct path_prefix
1351{
1352 struct prefix_list *plist; /* List of prefixes to try */
1353 int max_len; /* Max length of a prefix in PLIST */
1354 const char *name; /* Name of this list (used in config stuff) */
1355};
1356
1357/* List of prefixes to try when looking for executables. */
1358
1359static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1360
1361/* List of prefixes to try when looking for startup (crt0) files. */
1362
1363static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1364
1365/* List of prefixes to try when looking for include files. */
1366
1367static struct path_prefix include_prefixes = { 0, 0, "include" };
1368
1369/* Suffix to attach to directories searched for commands.
1370 This looks like `MACHINE/VERSION/'. */
1371
1372static const char *machine_suffix = 0;
1373
1374/* Suffix to attach to directories searched for commands.
1375 This is just `MACHINE/'. */
1376
1377static const char *just_machine_suffix = 0;
1378
1379/* Adjusted value of GCC_EXEC_PREFIX envvar. */
1380
1381static const char *gcc_exec_prefix;
1382
1383/* Adjusted value of standard_libexec_prefix. */
1384
1385static const char *gcc_libexec_prefix;
1386
1387/* Default prefixes to attach to command names. */
1388
1389#ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */
1390#undef MD_EXEC_PREFIX
1391#undef MD_STARTFILE_PREFIX
1392#undef MD_STARTFILE_PREFIX_1
1393#endif
1394
1395/* If no prefixes defined, use the null string, which will disable them. */
1396#ifndef MD_EXEC_PREFIX
1397#define MD_EXEC_PREFIX ""
1398#endif
1399#ifndef MD_STARTFILE_PREFIX
1400#define MD_STARTFILE_PREFIX ""
1401#endif
1402#ifndef MD_STARTFILE_PREFIX_1
1403#define MD_STARTFILE_PREFIX_1 ""
1404#endif
1405
1406static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1407static const char *const standard_exec_prefix_1 = "/usr/libexec/gcc/";
1408static const char *const standard_exec_prefix_2 = "/usr/lib/gcc/";
1409static const char *md_exec_prefix = MD_EXEC_PREFIX;
1410
1411static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1412static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1413static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1414static const char *const standard_startfile_prefix_1 = "/lib/";
1415static const char *const standard_startfile_prefix_2 = "/usr/lib/";
1416
1417static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1418static const char *tooldir_prefix;
1419
1420#ifndef FREEBSD_NATIVE
1421static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1422#endif /* not FREEBSD_NATIVE */
1423
1424static const char *standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1425
1426/* Subdirectory to use for locating libraries. Set by
1427 set_multilib_dir based on the compilation options. */
1428
1429static const char *multilib_dir;
1430
1431/* Subdirectory to use for locating libraries in OS conventions. Set by
1432 set_multilib_dir based on the compilation options. */
1433
1434static const char *multilib_os_dir;
1435
1436/* Structure to keep track of the specs that have been defined so far.
1437 These are accessed using %(specname) or %[specname] in a compiler
1438 or link spec. */
1439
1440struct spec_list
1441{
1442 /* The following 2 fields must be first */
1443 /* to allow EXTRA_SPECS to be initialized */
1444 const char *name; /* name of the spec. */
1445 const char *ptr; /* available ptr if no static pointer */
1446
1447 /* The following fields are not initialized */
1448 /* by EXTRA_SPECS */
1449 const char **ptr_spec; /* pointer to the spec itself. */
1450 struct spec_list *next; /* Next spec in linked list. */
1451 int name_len; /* length of the name */
1452 int alloc_p; /* whether string was allocated */
1453};
1454
1455#define INIT_STATIC_SPEC(NAME,PTR) \
1456{ NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1457
1458/* List of statically defined specs. */
1459static struct spec_list static_specs[] =
1460{
1461 INIT_STATIC_SPEC ("asm", &asm_spec),
1462 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1463 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1464 INIT_STATIC_SPEC ("asm_options", &asm_options),
1465 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1466 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1467 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1468 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1469 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1470 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1471 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1472 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1473 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1474 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1475 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1476 INIT_STATIC_SPEC ("link", &link_spec),
1477 INIT_STATIC_SPEC ("lib", &lib_spec),
1478 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1479 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1480 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces),
1481 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1482 INIT_STATIC_SPEC ("version", &compiler_version),
1483 INIT_STATIC_SPEC ("multilib", &multilib_select),
1484 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1485 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1486 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1487 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1488 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1489 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1490 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1491 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1492 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1493 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1494 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1495 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1496 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1497};
1498
1499#ifdef EXTRA_SPECS /* additional specs needed */
1500/* Structure to keep track of just the first two args of a spec_list.
1501 That is all that the EXTRA_SPECS macro gives us. */
1502struct spec_list_1
1503{
1504 const char *const name;
1505 const char *const ptr;
1506};
1507
1508static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1509static struct spec_list *extra_specs = (struct spec_list *) 0;
1510#endif
1511
1512/* List of dynamically allocates specs that have been defined so far. */
1513
1514static struct spec_list *specs = (struct spec_list *) 0;
1515
1516/* List of static spec functions. */
1517
1518static const struct spec_function static_spec_functions[] =
1519{
1520 { "if-exists", if_exists_spec_function },
1521 { "if-exists-else", if_exists_else_spec_function },
1522 { 0, 0 }
1523};
1524
1525static int processing_spec_function;
1526
1527/* Add appropriate libgcc specs to OBSTACK, taking into account
1528 various permutations of -shared-libgcc, -shared, and such. */
1529
1530#ifdef ENABLE_SHARED_LIBGCC
1531static void
1532init_gcc_specs (struct obstack *obstack, const char *shared_name,
1533 const char *static_name, const char *eh_name)
1534{
1535 char *buf;
1536
1537 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name,
1538 "}%{!static:%{!static-libgcc:",
1539#ifdef HAVE_LD_AS_NEEDED
1540 "%{!shared-libgcc:", static_name,
1541 " --as-needed ", shared_name, " --no-as-needed}"
1542 "%{shared-libgcc:", shared_name, "%{!shared: ", static_name,
1543 "}",
1544#else
1545 "%{!shared:%{!shared-libgcc:", static_name, " ",
1546 eh_name, "}%{shared-libgcc:", shared_name, " ",
1547 static_name, "}}%{shared:",
1548#ifdef LINK_EH_SPEC
1549 "%{shared-libgcc:", shared_name,
1550 "}%{!shared-libgcc:", static_name, "}",
1551#else
1552 shared_name,
1553#endif
1554#endif
1555 "}}}", NULL);
1556
1557 obstack_grow (obstack, buf, strlen (buf));
1558 free (buf);
1559}
1560#endif /* ENABLE_SHARED_LIBGCC */
1561
1562/* Initialize the specs lookup routines. */
1563
1564static void
1565init_spec (void)
1566{
1567 struct spec_list *next = (struct spec_list *) 0;
1568 struct spec_list *sl = (struct spec_list *) 0;
1569 int i;
1570
1571 if (specs)
1572 return; /* Already initialized. */
1573
1574 if (verbose_flag)
1575 notice ("Using built-in specs.\n");
1576
1577#ifdef EXTRA_SPECS
1578 extra_specs = xcalloc (sizeof (struct spec_list),
1579 ARRAY_SIZE (extra_specs_1));
1580
1581 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1582 {
1583 sl = &extra_specs[i];
1584 sl->name = extra_specs_1[i].name;
1585 sl->ptr = extra_specs_1[i].ptr;
1586 sl->next = next;
1587 sl->name_len = strlen (sl->name);
1588 sl->ptr_spec = &sl->ptr;
1589 next = sl;
1590 }
1591#endif
1592
1593 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
1594 on ?: in file-scope variable initializations. */
1595 asm_debug = ASM_DEBUG_SPEC;
1596
1597 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1598 {
1599 sl = &static_specs[i];
1600 sl->next = next;
1601 next = sl;
1602 }
1603
1604#ifdef ENABLE_SHARED_LIBGCC
1605 /* ??? If neither -shared-libgcc nor --static-libgcc was
1606 seen, then we should be making an educated guess. Some proposed
1607 heuristics for ELF include:
1608
1609 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1610 program will be doing dynamic loading, which will likely
1611 need the shared libgcc.
1612
1613 (2) If "-ldl", then it's also a fair bet that we're doing
1614 dynamic loading.
1615
1616 (3) For each ET_DYN we're linking against (either through -lfoo
1617 or /some/path/foo.so), check to see whether it or one of
1618 its dependencies depends on a shared libgcc.
1619
1620 (4) If "-shared"
1621
1622 If the runtime is fixed to look for program headers instead
1623 of calling __register_frame_info at all, for each object,
1624 use the shared libgcc if any EH symbol referenced.
1625
1626 If crtstuff is fixed to not invoke __register_frame_info
1627 automatically, for each object, use the shared libgcc if
1628 any non-empty unwind section found.
1629
1630 Doing any of this probably requires invoking an external program to
1631 do the actual object file scanning. */
1632 {
1633 const char *p = libgcc_spec;
1634 int in_sep = 1;
1635
1636 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1637 when given the proper command line arguments. */
1638 while (*p)
1639 {
1640 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1641 {
1642 init_gcc_specs (&obstack,
1643#ifdef NO_SHARED_LIBGCC_MULTILIB
1644 "-lgcc_s"
1645#else
1646 "-lgcc_s%M"
1647#endif
1648#ifdef USE_LIBUNWIND_EXCEPTIONS
1649 " -lunwind"
1650#endif
1651 ,
1652 "-lgcc",
1653 "-lgcc_eh"
1654#ifdef USE_LIBUNWIND_EXCEPTIONS
1655# ifdef HAVE_LD_STATIC_DYNAMIC
1656 " %{!static:-Bstatic} -lunwind %{!static:-Bdynamic}"
1657# else
1658 " -lunwind"
1659# endif
1660#endif
1661 );
1662
1663 p += 5;
1664 in_sep = 0;
1665 }
1666 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1667 {
1668 /* Ug. We don't know shared library extensions. Hope that
1669 systems that use this form don't do shared libraries. */
1670 init_gcc_specs (&obstack,
1671#ifdef NO_SHARED_LIBGCC_MULTILIB
1672 "-lgcc_s"
1673#else
1674 "-lgcc_s%M"
1675#endif
1676 ,
1677 "libgcc.a%s",
1678 "libgcc_eh.a%s"
1679#ifdef USE_LIBUNWIND_EXCEPTIONS
1680 " -lunwind"
1681#endif
1682 );
1683 p += 10;
1684 in_sep = 0;
1685 }
1686 else
1687 {
1688 obstack_1grow (&obstack, *p);
1689 in_sep = (*p == ' ');
1690 p += 1;
1691 }
1692 }
1693
1694 obstack_1grow (&obstack, '\0');
1695 libgcc_spec = obstack_finish (&obstack);
1696 }
1697#endif
1698#ifdef USE_AS_TRADITIONAL_FORMAT
1699 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1700 {
1701 static const char tf[] = "--traditional-format ";
1702 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1703 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1704 asm_spec = obstack_finish (&obstack);
1705 }
1706#endif
1707#ifdef LINK_EH_SPEC
1708 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1709 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1710 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1711 link_spec = obstack_finish (&obstack);
1712#endif
1713
1714 specs = sl;
1715}
1716
1717/* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1718 removed; If the spec starts with a + then SPEC is added to the end of the
1719 current spec. */
1720
1721static void
1722set_spec (const char *name, const char *spec)
1723{
1724 struct spec_list *sl;
1725 const char *old_spec;
1726 int name_len = strlen (name);
1727 int i;
1728
1729 /* If this is the first call, initialize the statically allocated specs. */
1730 if (!specs)
1731 {
1732 struct spec_list *next = (struct spec_list *) 0;
1733 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1734 {
1735 sl = &static_specs[i];
1736 sl->next = next;
1737 next = sl;
1738 }
1739 specs = sl;
1740 }
1741
1742 /* See if the spec already exists. */
1743 for (sl = specs; sl; sl = sl->next)
1744 if (name_len == sl->name_len && !strcmp (sl->name, name))
1745 break;
1746
1747 if (!sl)
1748 {
1749 /* Not found - make it. */
1750 sl = xmalloc (sizeof (struct spec_list));
1751 sl->name = xstrdup (name);
1752 sl->name_len = name_len;
1753 sl->ptr_spec = &sl->ptr;
1754 sl->alloc_p = 0;
1755 *(sl->ptr_spec) = "";
1756 sl->next = specs;
1757 specs = sl;
1758 }
1759
1760 old_spec = *(sl->ptr_spec);
1761 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1762 ? concat (old_spec, spec + 1, NULL)
1763 : xstrdup (spec));
1764
1765#ifdef DEBUG_SPECS
1766 if (verbose_flag)
1767 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1768#endif
1769
1770 /* Free the old spec. */
1771 if (old_spec && sl->alloc_p)
1772 free ((void *) old_spec);
1773
1774 sl->alloc_p = 1;
1775}
1776
1777/* Accumulate a command (program name and args), and run it. */
1778
1779/* Vector of pointers to arguments in the current line of specifications. */
1780
1781static const char **argbuf;
1782
1783/* Number of elements allocated in argbuf. */
1784
1785static int argbuf_length;
1786
1787/* Number of elements in argbuf currently in use (containing args). */
1788
1789static int argbuf_index;
1790
1791/* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1792 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1793 it here. */
1794
1795static struct temp_name {
1796 const char *suffix; /* suffix associated with the code. */
1797 int length; /* strlen (suffix). */
1798 int unique; /* Indicates whether %g or %u/%U was used. */
1799 const char *filename; /* associated filename. */
1800 int filename_length; /* strlen (filename). */
1801 struct temp_name *next;
1802} *temp_names;
1803
1804/* Number of commands executed so far. */
1805
1806static int execution_count;
1807
1808/* Number of commands that exited with a signal. */
1809
1810static int signal_count;
1811
1812/* Name with which this program was invoked. */
1813
1814static const char *programname;
1815
1816/* Allocate the argument vector. */
1817
1818static void
1819alloc_args (void)
1820{
1821 argbuf_length = 10;
1822 argbuf = xmalloc (argbuf_length * sizeof (const char *));
1823}
1824
1825/* Clear out the vector of arguments (after a command is executed). */
1826
1827static void
1828clear_args (void)
1829{
1830 argbuf_index = 0;
1831}
1832
1833/* Add one argument to the vector at the end.
1834 This is done when a space is seen or at the end of the line.
1835 If DELETE_ALWAYS is nonzero, the arg is a filename
1836 and the file should be deleted eventually.
1837 If DELETE_FAILURE is nonzero, the arg is a filename
1838 and the file should be deleted if this compilation fails. */
1839
1840static void
1841store_arg (const char *arg, int delete_always, int delete_failure)
1842{
1843 if (argbuf_index + 1 == argbuf_length)
1844 argbuf = xrealloc (argbuf, (argbuf_length *= 2) * sizeof (const char *));
1845
1846 argbuf[argbuf_index++] = arg;
1847 argbuf[argbuf_index] = 0;
1848
1849 if (delete_always || delete_failure)
1850 record_temp_file (arg, delete_always, delete_failure);
1851}
1852
1853/* Load specs from a file name named FILENAME, replacing occurrences of
1854 various different types of line-endings, \r\n, \n\r and just \r, with
1855 a single \n. */
1856
1857static char *
1858load_specs (const char *filename)
1859{
1860 int desc;
1861 int readlen;
1862 struct stat statbuf;
1863 char *buffer;
1864 char *buffer_p;
1865 char *specs;
1866 char *specs_p;
1867
1868 if (verbose_flag)
1869 notice ("Reading specs from %s\n", filename);
1870
1871 /* Open and stat the file. */
1872 desc = open (filename, O_RDONLY, 0);
1873 if (desc < 0)
1874 pfatal_with_name (filename);
1875 if (stat (filename, &statbuf) < 0)
1876 pfatal_with_name (filename);
1877
1878 /* Read contents of file into BUFFER. */
1879 buffer = xmalloc ((unsigned) statbuf.st_size + 1);
1880 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1881 if (readlen < 0)
1882 pfatal_with_name (filename);
1883 buffer[readlen] = 0;
1884 close (desc);
1885
1886 specs = xmalloc (readlen + 1);
1887 specs_p = specs;
1888 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1889 {
1890 int skip = 0;
1891 char c = *buffer_p;
1892 if (c == '\r')
1893 {
1894 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1895 skip = 1;
1896 else if (*(buffer_p + 1) == '\n') /* \r\n */
1897 skip = 1;
1898 else /* \r */
1899 c = '\n';
1900 }
1901 if (! skip)
1902 *specs_p++ = c;
1903 }
1904 *specs_p = '\0';
1905
1906 free (buffer);
1907 return (specs);
1908}
1909
1910/* Read compilation specs from a file named FILENAME,
1911 replacing the default ones.
1912
1913 A suffix which starts with `*' is a definition for
1914 one of the machine-specific sub-specs. The "suffix" should be
1915 *asm, *cc1, *cpp, *link, *startfile, etc.
1916 The corresponding spec is stored in asm_spec, etc.,
1917 rather than in the `compilers' vector.
1918
1919 Anything invalid in the file is a fatal error. */
1920
1921static void
1922read_specs (const char *filename, int main_p)
1923{
1924 char *buffer;
1925 char *p;
1926
1927 buffer = load_specs (filename);
1928
1929 /* Scan BUFFER for specs, putting them in the vector. */
1930 p = buffer;
1931 while (1)
1932 {
1933 char *suffix;
1934 char *spec;
1935 char *in, *out, *p1, *p2, *p3;
1936
1937 /* Advance P in BUFFER to the next nonblank nocomment line. */
1938 p = skip_whitespace (p);
1939 if (*p == 0)
1940 break;
1941
1942 /* Is this a special command that starts with '%'? */
1943 /* Don't allow this for the main specs file, since it would
1944 encourage people to overwrite it. */
1945 if (*p == '%' && !main_p)
1946 {
1947 p1 = p;
1948 while (*p && *p != '\n')
1949 p++;
1950
1951 /* Skip '\n'. */
1952 p++;
1953
1954 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1955 && (p1[sizeof "%include" - 1] == ' '
1956 || p1[sizeof "%include" - 1] == '\t'))
1957 {
1958 char *new_filename;
1959
1960 p1 += sizeof ("%include");
1961 while (*p1 == ' ' || *p1 == '\t')
1962 p1++;
1963
1964 if (*p1++ != '<' || p[-2] != '>')
1965 fatal ("specs %%include syntax malformed after %ld characters",
1966 (long) (p1 - buffer + 1));
1967
1968 p[-2] = '\0';
1969 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, 0);
1970 read_specs (new_filename ? new_filename : p1, FALSE);
1971 continue;
1972 }
1973 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1974 && (p1[sizeof "%include_noerr" - 1] == ' '
1975 || p1[sizeof "%include_noerr" - 1] == '\t'))
1976 {
1977 char *new_filename;
1978
1979 p1 += sizeof "%include_noerr";
1980 while (*p1 == ' ' || *p1 == '\t')
1981 p1++;
1982
1983 if (*p1++ != '<' || p[-2] != '>')
1984 fatal ("specs %%include syntax malformed after %ld characters",
1985 (long) (p1 - buffer + 1));
1986
1987 p[-2] = '\0';
1988 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, 0);
1989 if (new_filename)
1990 read_specs (new_filename, FALSE);
1991 else if (verbose_flag)
1992 notice ("could not find specs file %s\n", p1);
1993 continue;
1994 }
1995 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1996 && (p1[sizeof "%rename" - 1] == ' '
1997 || p1[sizeof "%rename" - 1] == '\t'))
1998 {
1999 int name_len;
2000 struct spec_list *sl;
2001 struct spec_list *newsl;
2002
2003 /* Get original name. */
2004 p1 += sizeof "%rename";
2005 while (*p1 == ' ' || *p1 == '\t')
2006 p1++;
2007
2008 if (! ISALPHA ((unsigned char) *p1))
2009 fatal ("specs %%rename syntax malformed after %ld characters",
2010 (long) (p1 - buffer));
2011
2012 p2 = p1;
2013 while (*p2 && !ISSPACE ((unsigned char) *p2))
2014 p2++;
2015
2016 if (*p2 != ' ' && *p2 != '\t')
2017 fatal ("specs %%rename syntax malformed after %ld characters",
2018 (long) (p2 - buffer));
2019
2020 name_len = p2 - p1;
2021 *p2++ = '\0';
2022 while (*p2 == ' ' || *p2 == '\t')
2023 p2++;
2024
2025 if (! ISALPHA ((unsigned char) *p2))
2026 fatal ("specs %%rename syntax malformed after %ld characters",
2027 (long) (p2 - buffer));
2028
2029 /* Get new spec name. */
2030 p3 = p2;
2031 while (*p3 && !ISSPACE ((unsigned char) *p3))
2032 p3++;
2033
2034 if (p3 != p - 1)
2035 fatal ("specs %%rename syntax malformed after %ld characters",
2036 (long) (p3 - buffer));
2037 *p3 = '\0';
2038
2039 for (sl = specs; sl; sl = sl->next)
2040 if (name_len == sl->name_len && !strcmp (sl->name, p1))
2041 break;
2042
2043 if (!sl)
2044 fatal ("specs %s spec was not found to be renamed", p1);
2045
2046 if (strcmp (p1, p2) == 0)
2047 continue;
2048
2049 for (newsl = specs; newsl; newsl = newsl->next)
2050 if (strcmp (newsl->name, p2) == 0)
2051 fatal ("%s: attempt to rename spec '%s' to already defined spec '%s'",
2052 filename, p1, p2);
2053
2054 if (verbose_flag)
2055 {
2056 notice ("rename spec %s to %s\n", p1, p2);
2057#ifdef DEBUG_SPECS
2058 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
2059#endif
2060 }
2061
2062 set_spec (p2, *(sl->ptr_spec));
2063 if (sl->alloc_p)
2064 free ((void *) *(sl->ptr_spec));
2065
2066 *(sl->ptr_spec) = "";
2067 sl->alloc_p = 0;
2068 continue;
2069 }
2070 else
2071 fatal ("specs unknown %% command after %ld characters",
2072 (long) (p1 - buffer));
2073 }
2074
2075 /* Find the colon that should end the suffix. */
2076 p1 = p;
2077 while (*p1 && *p1 != ':' && *p1 != '\n')
2078 p1++;
2079
2080 /* The colon shouldn't be missing. */
2081 if (*p1 != ':')
2082 fatal ("specs file malformed after %ld characters",
2083 (long) (p1 - buffer));
2084
2085 /* Skip back over trailing whitespace. */
2086 p2 = p1;
2087 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
2088 p2--;
2089
2090 /* Copy the suffix to a string. */
2091 suffix = save_string (p, p2 - p);
2092 /* Find the next line. */
2093 p = skip_whitespace (p1 + 1);
2094 if (p[1] == 0)
2095 fatal ("specs file malformed after %ld characters",
2096 (long) (p - buffer));
2097
2098 p1 = p;
2099 /* Find next blank line or end of string. */
2100 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
2101 p1++;
2102
2103 /* Specs end at the blank line and do not include the newline. */
2104 spec = save_string (p, p1 - p);
2105 p = p1;
2106
2107 /* Delete backslash-newline sequences from the spec. */
2108 in = spec;
2109 out = spec;
2110 while (*in != 0)
2111 {
2112 if (in[0] == '\\' && in[1] == '\n')
2113 in += 2;
2114 else if (in[0] == '#')
2115 while (*in && *in != '\n')
2116 in++;
2117
2118 else
2119 *out++ = *in++;
2120 }
2121 *out = 0;
2122
2123 if (suffix[0] == '*')
2124 {
2125 if (! strcmp (suffix, "*link_command"))
2126 link_command_spec = spec;
2127 else
2128 set_spec (suffix + 1, spec);
2129 }
2130 else
2131 {
2132 /* Add this pair to the vector. */
2133 compilers
2134 = xrealloc (compilers,
2135 (n_compilers + 2) * sizeof (struct compiler));
2136
2137 compilers[n_compilers].suffix = suffix;
2138 compilers[n_compilers].spec = spec;
2139 n_compilers++;
2140 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2141 }
2142
2143 if (*suffix == 0)
2144 link_command_spec = spec;
2145 }
2146
2147 if (link_command_spec == 0)
2148 fatal ("spec file has no spec for linking");
2149}
2150
2151/* Record the names of temporary files we tell compilers to write,
2152 and delete them at the end of the run. */
2153
2154/* This is the common prefix we use to make temp file names.
2155 It is chosen once for each run of this program.
2156 It is substituted into a spec by %g or %j.
2157 Thus, all temp file names contain this prefix.
2158 In practice, all temp file names start with this prefix.
2159
2160 This prefix comes from the envvar TMPDIR if it is defined;
2161 otherwise, from the P_tmpdir macro if that is defined;
2162 otherwise, in /usr/tmp or /tmp;
2163 or finally the current directory if all else fails. */
2164
2165static const char *temp_filename;
2166
2167/* Length of the prefix. */
2168
2169static int temp_filename_length;
2170
2171/* Define the list of temporary files to delete. */
2172
2173struct temp_file
2174{
2175 const char *name;
2176 struct temp_file *next;
2177};
2178
2179/* Queue of files to delete on success or failure of compilation. */
2180static struct temp_file *always_delete_queue;
2181/* Queue of files to delete on failure of compilation. */
2182static struct temp_file *failure_delete_queue;
2183
2184/* Record FILENAME as a file to be deleted automatically.
2185 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2186 otherwise delete it in any case.
2187 FAIL_DELETE nonzero means delete it if a compilation step fails;
2188 otherwise delete it in any case. */
2189
2190void
2191record_temp_file (const char *filename, int always_delete, int fail_delete)
2192{
2193 char *const name = xstrdup (filename);
2194
2195 if (always_delete)
2196 {
2197 struct temp_file *temp;
2198 for (temp = always_delete_queue; temp; temp = temp->next)
2199 if (! strcmp (name, temp->name))
2200 goto already1;
2201
2202 temp = xmalloc (sizeof (struct temp_file));
2203 temp->next = always_delete_queue;
2204 temp->name = name;
2205 always_delete_queue = temp;
2206
2207 already1:;
2208 }
2209
2210 if (fail_delete)
2211 {
2212 struct temp_file *temp;
2213 for (temp = failure_delete_queue; temp; temp = temp->next)
2214 if (! strcmp (name, temp->name))
2215 goto already2;
2216
2217 temp = xmalloc (sizeof (struct temp_file));
2218 temp->next = failure_delete_queue;
2219 temp->name = name;
2220 failure_delete_queue = temp;
2221
2222 already2:;
2223 }
2224}
2225
2226/* Delete all the temporary files whose names we previously recorded. */
2227
2228static void
2229delete_if_ordinary (const char *name)
2230{
2231 struct stat st;
2232#ifdef DEBUG
2233 int i, c;
2234
2235 printf ("Delete %s? (y or n) ", name);
2236 fflush (stdout);
2237 i = getchar ();
2238 if (i != '\n')
2239 while ((c = getchar ()) != '\n' && c != EOF)
2240 ;
2241
2242 if (i == 'y' || i == 'Y')
2243#endif /* DEBUG */
2244 if (stat (name, &st) >= 0 && S_ISREG (st.st_mode))
2245 if (unlink (name) < 0)
2246 if (verbose_flag)
2247 perror_with_name (name);
2248}
2249
2250static void
2251delete_temp_files (void)
2252{
2253 struct temp_file *temp;
2254
2255 for (temp = always_delete_queue; temp; temp = temp->next)
2256 delete_if_ordinary (temp->name);
2257 always_delete_queue = 0;
2258}
2259
2260/* Delete all the files to be deleted on error. */
2261
2262static void
2263delete_failure_queue (void)
2264{
2265 struct temp_file *temp;
2266
2267 for (temp = failure_delete_queue; temp; temp = temp->next)
2268 delete_if_ordinary (temp->name);
2269}
2270
2271static void
2272clear_failure_queue (void)
2273{
2274 failure_delete_queue = 0;
2275}
2276
2277/* Build a list of search directories from PATHS.
2278 PREFIX is a string to prepend to the list.
2279 If CHECK_DIR_P is nonzero we ensure the directory exists.
2280 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2281 It is also used by the --print-search-dirs flag. */
2282
2283static char *
2284build_search_list (struct path_prefix *paths, const char *prefix,
2285 int check_dir_p)
2286{
2287 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0;
2288 int just_suffix_len
2289 = (just_machine_suffix) ? strlen (just_machine_suffix) : 0;
2290 int first_time = TRUE;
2291 struct prefix_list *pprefix;
2292
2293 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2294 obstack_1grow (&collect_obstack, '=');
2295
2296 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next)
2297 {
2298 int len = strlen (pprefix->prefix);
2299
2300 if (machine_suffix
2301 && (! check_dir_p
2302 || is_directory (pprefix->prefix, machine_suffix, 0)))
2303 {
2304 if (!first_time)
2305 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2306
2307 first_time = FALSE;
2308 obstack_grow (&collect_obstack, pprefix->prefix, len);
2309 obstack_grow (&collect_obstack, machine_suffix, suffix_len);
2310 }
2311
2312 if (just_machine_suffix
2313 && pprefix->require_machine_suffix == 2
2314 && (! check_dir_p
2315 || is_directory (pprefix->prefix, just_machine_suffix, 0)))
2316 {
2317 if (! first_time)
2318 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2319
2320 first_time = FALSE;
2321 obstack_grow (&collect_obstack, pprefix->prefix, len);
2322 obstack_grow (&collect_obstack, just_machine_suffix,
2323 just_suffix_len);
2324 }
2325
2326 if (! pprefix->require_machine_suffix)
2327 {
2328 if (! first_time)
2329 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2330
2331 first_time = FALSE;
2332 obstack_grow (&collect_obstack, pprefix->prefix, len);
2333 }
2334 }
2335
2336 obstack_1grow (&collect_obstack, '\0');
2337 return obstack_finish (&collect_obstack);
2338}
2339
2340/* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2341 for collect. */
2342
2343static void
2344putenv_from_prefixes (struct path_prefix *paths, const char *env_var)
2345{
2346 putenv (build_search_list (paths, env_var, 1));
2347}
2348
2349/* Check whether NAME can be accessed in MODE. This is like access,
2350 except that it never considers directories to be executable. */
2351
2352static int
2353access_check (const char *name, int mode)
2354{
2355 if (mode == X_OK)
2356 {
2357 struct stat st;
2358
2359 if (stat (name, &st) < 0
2360 || S_ISDIR (st.st_mode))
2361 return -1;
2362 }
2363
2364 return access (name, mode);
2365}
2366
2367/* Search for NAME using the prefix list PREFIXES. MODE is passed to
2368 access to check permissions.
2369 Return 0 if not found, otherwise return its name, allocated with malloc. */
2370
2371static char *
2372find_a_file (struct path_prefix *pprefix, const char *name, int mode,
2373 int multilib)
2374{
2375 char *temp;
2376 const char *const file_suffix =
2377 ((mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "");
2378 struct prefix_list *pl;
2379 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1;
2380 const char *multilib_name, *multilib_os_name;
2381
2382#ifdef DEFAULT_ASSEMBLER
2383 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2384 return xstrdup (DEFAULT_ASSEMBLER);
2385#endif
2386
2387#ifdef DEFAULT_LINKER
2388 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2389 return xstrdup (DEFAULT_LINKER);
2390#endif
2391
2392 if (machine_suffix)
2393 len += strlen (machine_suffix);
2394
2395 multilib_name = name;
2396 multilib_os_name = name;
2397 if (multilib && multilib_os_dir)
2398 {
2399 int len1 = multilib_dir ? strlen (multilib_dir) + 1 : 0;
2400 int len2 = strlen (multilib_os_dir) + 1;
2401
2402 len += len1 > len2 ? len1 : len2;
2403 if (multilib_dir)
2404 multilib_name = ACONCAT ((multilib_dir, dir_separator_str, name,
2405 NULL));
2406 if (strcmp (multilib_os_dir, ".") != 0)
2407 multilib_os_name = ACONCAT ((multilib_os_dir, dir_separator_str, name,
2408 NULL));
2409 }
2410
2411 temp = xmalloc (len);
2412
2413 /* Determine the filename to execute (special case for absolute paths). */
2414
2415 if (IS_ABSOLUTE_PATH (name))
2416 {
2417 if (access (name, mode) == 0)
2418 {
2419 strcpy (temp, name);
2420 return temp;
2421 }
2422 }
2423 else
2424 for (pl = pprefix->plist; pl; pl = pl->next)
2425 {
2426 const char *this_name
2427 = pl->os_multilib ? multilib_os_name : multilib_name;
2428
2429 if (machine_suffix)
2430 {
2431 /* Some systems have a suffix for executable files.
2432 So try appending that first. */
2433 if (file_suffix[0] != 0)
2434 {
2435 strcpy (temp, pl->prefix);
2436 strcat (temp, machine_suffix);
2437 strcat (temp, multilib_name);
2438 strcat (temp, file_suffix);
2439 if (access_check (temp, mode) == 0)
2440 {
2441 if (pl->used_flag_ptr != 0)
2442 *pl->used_flag_ptr = 1;
2443 return temp;
2444 }
2445 }
2446
2447 /* Now try just the multilib_name. */
2448 strcpy (temp, pl->prefix);
2449 strcat (temp, machine_suffix);
2450 strcat (temp, multilib_name);
2451 if (access_check (temp, mode) == 0)
2452 {
2453 if (pl->used_flag_ptr != 0)
2454 *pl->used_flag_ptr = 1;
2455 return temp;
2456 }
2457 }
2458
2459 /* Certain prefixes are tried with just the machine type,
2460 not the version. This is used for finding as, ld, etc. */
2461 if (just_machine_suffix && pl->require_machine_suffix == 2)
2462 {
2463 /* Some systems have a suffix for executable files.
2464 So try appending that first. */
2465 if (file_suffix[0] != 0)
2466 {
2467 strcpy (temp, pl->prefix);
2468 strcat (temp, just_machine_suffix);
2469 strcat (temp, multilib_name);
2470 strcat (temp, file_suffix);
2471 if (access_check (temp, mode) == 0)
2472 {
2473 if (pl->used_flag_ptr != 0)
2474 *pl->used_flag_ptr = 1;
2475 return temp;
2476 }
2477 }
2478
2479 strcpy (temp, pl->prefix);
2480 strcat (temp, just_machine_suffix);
2481 strcat (temp, multilib_name);
2482 if (access_check (temp, mode) == 0)
2483 {
2484 if (pl->used_flag_ptr != 0)
2485 *pl->used_flag_ptr = 1;
2486 return temp;
2487 }
2488 }
2489
2490 /* Certain prefixes can't be used without the machine suffix
2491 when the machine or version is explicitly specified. */
2492 if (! pl->require_machine_suffix)
2493 {
2494 /* Some systems have a suffix for executable files.
2495 So try appending that first. */
2496 if (file_suffix[0] != 0)
2497 {
2498 strcpy (temp, pl->prefix);
2499 strcat (temp, this_name);
2500 strcat (temp, file_suffix);
2501 if (access_check (temp, mode) == 0)
2502 {
2503 if (pl->used_flag_ptr != 0)
2504 *pl->used_flag_ptr = 1;
2505 return temp;
2506 }
2507 }
2508
2509 strcpy (temp, pl->prefix);
2510 strcat (temp, this_name);
2511 if (access_check (temp, mode) == 0)
2512 {
2513 if (pl->used_flag_ptr != 0)
2514 *pl->used_flag_ptr = 1;
2515 return temp;
2516 }
2517 }
2518 }
2519
2520 free (temp);
2521 return 0;
2522}
2523
2524/* Ranking of prefixes in the sort list. -B prefixes are put before
2525 all others. */
2526
2527enum path_prefix_priority
2528{
2529 PREFIX_PRIORITY_B_OPT,
2530 PREFIX_PRIORITY_LAST
2531};
2532
2533/* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2534 order according to PRIORITY. Within each PRIORITY, new entries are
2535 appended.
2536
2537 If WARN is nonzero, we will warn if no file is found
2538 through this prefix. WARN should point to an int
2539 which will be set to 1 if this entry is used.
2540
2541 COMPONENT is the value to be passed to update_path.
2542
2543 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2544 the complete value of machine_suffix.
2545 2 means try both machine_suffix and just_machine_suffix. */
2546
2547static void
2548add_prefix (struct path_prefix *pprefix, const char *prefix,
2549 const char *component, /* enum prefix_priority */ int priority,
2550 int require_machine_suffix, int *warn, int os_multilib)
2551{
2552 struct prefix_list *pl, **prev;
2553 int len;
2554
2555 for (prev = &pprefix->plist;
2556 (*prev) != NULL && (*prev)->priority <= priority;
2557 prev = &(*prev)->next)
2558 ;
2559
2560 /* Keep track of the longest prefix. */
2561
2562 prefix = update_path (prefix, component);
2563 len = strlen (prefix);
2564 if (len > pprefix->max_len)
2565 pprefix->max_len = len;
2566
2567 pl = xmalloc (sizeof (struct prefix_list));
2568 pl->prefix = prefix;
2569 pl->require_machine_suffix = require_machine_suffix;
2570 pl->used_flag_ptr = warn;
2571 pl->priority = priority;
2572 pl->os_multilib = os_multilib;
2573 if (warn)
2574 *warn = 0;
2575
2576 /* Insert after PREV. */
2577 pl->next = (*prev);
2578 (*prev) = pl;
2579}
2580
2581/* Same as add_prefix, but prepending target_system_root to prefix. */
2582static void
2583add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2584 const char *component,
2585 /* enum prefix_priority */ int priority,
2586 int require_machine_suffix, int *warn, int os_multilib)
2587{
2588 if (!IS_ABSOLUTE_PATH (prefix))
2589 abort ();
2590
2591 if (target_system_root)
2592 {
2593 if (target_sysroot_suffix)
2594 prefix = concat (target_sysroot_suffix, prefix, NULL);
2595 prefix = concat (target_system_root, prefix, NULL);
2596
2597 /* We have to override this because GCC's notion of sysroot
2598 moves along with GCC. */
2599 component = "GCC";
2600 }
2601
2602 add_prefix (pprefix, prefix, component, priority,
2603 require_machine_suffix, warn, os_multilib);
2604}
2605
2606/* Execute the command specified by the arguments on the current line of spec.
2607 When using pipes, this includes several piped-together commands
2608 with `|' between them.
2609
2610 Return 0 if successful, -1 if failed. */
2611
2612static int
2613execute (void)
2614{
2615 int i;
2616 int n_commands; /* # of command. */
2617 char *string;
2618 struct command
2619 {
2620 const char *prog; /* program name. */
2621 const char **argv; /* vector of args. */
2622 int pid; /* pid of process for this command. */
2623 };
2624
2625 struct command *commands; /* each command buffer with above info. */
2626
2627 if (processing_spec_function)
2628 abort ();
2629
2630 /* Count # of piped commands. */
2631 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2632 if (strcmp (argbuf[i], "|") == 0)
2633 n_commands++;
2634
2635 /* Get storage for each command. */
2636 commands = alloca (n_commands * sizeof (struct command));
2637
2638 /* Split argbuf into its separate piped processes,
2639 and record info about each one.
2640 Also search for the programs that are to be run. */
2641
2642 commands[0].prog = argbuf[0]; /* first command. */
2643 commands[0].argv = &argbuf[0];
2644 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, 0);
2645
2646 if (string)
2647 commands[0].argv[0] = string;
2648
2649 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2650 if (strcmp (argbuf[i], "|") == 0)
2651 { /* each command. */
2652#if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2653 fatal ("-pipe not supported");
2654#endif
2655 argbuf[i] = 0; /* termination of command args. */
2656 commands[n_commands].prog = argbuf[i + 1];
2657 commands[n_commands].argv = &argbuf[i + 1];
2658 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2659 X_OK, 0);
2660 if (string)
2661 commands[n_commands].argv[0] = string;
2662 n_commands++;
2663 }
2664
2665 argbuf[argbuf_index] = 0;
2666
2667 /* If -v, print what we are about to do, and maybe query. */
2668
2669 if (verbose_flag)
2670 {
2671 /* For help listings, put a blank line between sub-processes. */
2672 if (print_help_list)
2673 fputc ('\n', stderr);
2674
2675 /* Print each piped command as a separate line. */
2676 for (i = 0; i < n_commands; i++)
2677 {
2678 const char *const *j;
2679
2680 if (verbose_only_flag)
2681 {
2682 for (j = commands[i].argv; *j; j++)
2683 {
2684 const char *p;
2685 fprintf (stderr, " \"");
2686 for (p = *j; *p; ++p)
2687 {
2688 if (*p == '"' || *p == '\\' || *p == '$')
2689 fputc ('\\', stderr);
2690 fputc (*p, stderr);
2691 }
2692 fputc ('"', stderr);
2693 }
2694 }
2695 else
2696 for (j = commands[i].argv; *j; j++)
2697 fprintf (stderr, " %s", *j);
2698
2699 /* Print a pipe symbol after all but the last command. */
2700 if (i + 1 != n_commands)
2701 fprintf (stderr, " |");
2702 fprintf (stderr, "\n");
2703 }
2704 fflush (stderr);
2705 if (verbose_only_flag != 0)
2706 {
2707 /* verbose_only_flag should act as if the spec was
2708 executed, so increment execution_count before
2709 returning. This prevents spurious warnings about
2710 unused linker input files, etc. */
2711 execution_count++;
2712 return 0;
2713 }
2714#ifdef DEBUG
2715 notice ("\nGo ahead? (y or n) ");
2716 fflush (stderr);
2717 i = getchar ();
2718 if (i != '\n')
2719 while (getchar () != '\n')
2720 ;
2721
2722 if (i != 'y' && i != 'Y')
2723 return 0;
2724#endif /* DEBUG */
2725 }
2726
2727#ifdef ENABLE_VALGRIND_CHECKING
2728 /* Run the each command through valgrind. To simplify prepending the
2729 path to valgrind and the option "-q" (for quiet operation unless
2730 something triggers), we allocate a separate argv array. */
2731
2732 for (i = 0; i < n_commands; i++)
2733 {
2734 const char **argv;
2735 int argc;
2736 int j;
2737
2738 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2739 ;
2740
2741 argv = alloca ((argc + 3) * sizeof (char *));
2742
2743 argv[0] = VALGRIND_PATH;
2744 argv[1] = "-q";
2745 for (j = 2; j < argc + 2; j++)
2746 argv[j] = commands[i].argv[j - 2];
2747 argv[j] = NULL;
2748
2749 commands[i].argv = argv;
2750 commands[i].prog = argv[0];
2751 }
2752#endif
2753
2754 /* Run each piped subprocess. */
2755
2756 for (i = 0; i < n_commands; i++)
2757 {
2758 char *errmsg_fmt, *errmsg_arg;
2759 const char *string = commands[i].argv[0];
2760
2761 /* For some bizarre reason, the second argument of execvp() is
2762 char *const *, not const char *const *. */
2763 commands[i].pid = pexecute (string, (char *const *) commands[i].argv,
2764 programname, temp_filename,
2765 &errmsg_fmt, &errmsg_arg,
2766 ((i == 0 ? PEXECUTE_FIRST : 0)
2767 | (i + 1 == n_commands ? PEXECUTE_LAST : 0)
2768 | (string == commands[i].prog
2769 ? PEXECUTE_SEARCH : 0)
2770 | (verbose_flag ? PEXECUTE_VERBOSE : 0)));
2771
2772 if (commands[i].pid == -1)
2773 pfatal_pexecute (errmsg_fmt, errmsg_arg);
2774
2775 if (string != commands[i].prog)
2776 free ((void *) string);
2777 }
2778
2779 execution_count++;
2780
2781 /* Wait for all the subprocesses to finish.
2782 We don't care what order they finish in;
2783 we know that N_COMMANDS waits will get them all.
2784 Ignore subprocesses that we don't know about,
2785 since they can be spawned by the process that exec'ed us. */
2786
2787 {
2788 int ret_code = 0;
2789#ifdef HAVE_GETRUSAGE
2790 struct timeval d;
2791 double ut = 0.0, st = 0.0;
2792#endif
2793
2794 for (i = 0; i < n_commands;)
2795 {
2796 int j;
2797 int status;
2798 int pid;
2799
2800 pid = pwait (commands[i].pid, &status, 0);
2801 if (pid < 0)
2802 abort ();
2803
2804#ifdef HAVE_GETRUSAGE
2805 if (report_times)
2806 {
2807 /* getrusage returns the total resource usage of all children
2808 up to now. Copy the previous values into prus, get the
2809 current statistics, then take the difference. */
2810
2811 prus = rus;
2812 getrusage (RUSAGE_CHILDREN, &rus);
2813 d.tv_sec = rus.ru_utime.tv_sec - prus.ru_utime.tv_sec;
2814 d.tv_usec = rus.ru_utime.tv_usec - prus.ru_utime.tv_usec;
2815 ut = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2816
2817 d.tv_sec = rus.ru_stime.tv_sec - prus.ru_stime.tv_sec;
2818 d.tv_usec = rus.ru_stime.tv_usec - prus.ru_stime.tv_usec;
2819 st = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2820 }
2821#endif
2822
2823 for (j = 0; j < n_commands; j++)
2824 if (commands[j].pid == pid)
2825 {
2826 i++;
2827 if (WIFSIGNALED (status))
2828 {
2829#ifdef SIGPIPE
2830 /* SIGPIPE is a special case. It happens in -pipe mode
2831 when the compiler dies before the preprocessor is
2832 done, or the assembler dies before the compiler is
2833 done. There's generally been an error already, and
2834 this is just fallout. So don't generate another error
2835 unless we would otherwise have succeeded. */
2836 if (WTERMSIG (status) == SIGPIPE
2837 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2838 ;
2839 else
2840#endif
2841 fatal ("\
2842Internal error: %s (program %s)\n\
2843Please submit a full bug report.\n\
2844See %s for instructions.",
2845 strsignal (WTERMSIG (status)), commands[j].prog,
2846 bug_report_url);
2847 signal_count++;
2848 ret_code = -1;
2849 }
2850 else if (WIFEXITED (status)
2851 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2852 {
2853 if (WEXITSTATUS (status) > greatest_status)
2854 greatest_status = WEXITSTATUS (status);
2855 ret_code = -1;
2856 }
2857#ifdef HAVE_GETRUSAGE
2858 if (report_times && ut + st != 0)
2859 notice ("# %s %.2f %.2f\n", commands[j].prog, ut, st);
2860#endif
2861 break;
2862 }
2863 }
2864 return ret_code;
2865 }
2866}
2867
2868/* Find all the switches given to us
2869 and make a vector describing them.
2870 The elements of the vector are strings, one per switch given.
2871 If a switch uses following arguments, then the `part1' field
2872 is the switch itself and the `args' field
2873 is a null-terminated vector containing the following arguments.
2874 The `live_cond' field is:
2875 0 when initialized
2876 1 if the switch is true in a conditional spec,
2877 -1 if false (overridden by a later switch)
2878 -2 if this switch should be ignored (used in %<S)
2879 The `validated' field is nonzero if any spec has looked at this switch;
2880 if it remains zero at the end of the run, it must be meaningless. */
2881
2882#define SWITCH_OK 0
2883#define SWITCH_FALSE -1
2884#define SWITCH_IGNORE -2
2885#define SWITCH_LIVE 1
2886
2887struct switchstr
2888{
2889 const char *part1;
2890 const char **args;
2891 int live_cond;
2892 unsigned char validated;
2893 unsigned char ordering;
2894};
2895
2896static struct switchstr *switches;
2897
2898static int n_switches;
2899
2900struct infile
2901{
2902 const char *name;
2903 const char *language;
2904};
2905
2906/* Also a vector of input files specified. */
2907
2908static struct infile *infiles;
2909
2910int n_infiles;
2911
2912/* True if multiple input files are being compiled to a single
2913 assembly file. */
2914
2915static bool combine_inputs;
2916
2917/* This counts the number of libraries added by lang_specific_driver, so that
2918 we can tell if there were any user supplied any files or libraries. */
2919
2920static int added_libraries;
2921
2922/* And a vector of corresponding output files is made up later. */
2923
2924const char **outfiles;
2925
2926/* Used to track if none of the -B paths are used. */
2927static int warn_B;
2928
2929/* Gives value to pass as "warn" to add_prefix for standard prefixes. */
2930static int *warn_std_ptr = 0;
2931
2932#if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2933
2934/* Convert NAME to a new name if it is the standard suffix. DO_EXE
2935 is true if we should look for an executable suffix. DO_OBJ
2936 is true if we should look for an object suffix. */
2937
2938static const char *
2939convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
2940 int do_obj ATTRIBUTE_UNUSED)
2941{
2942#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2943 int i;
2944#endif
2945 int len;
2946
2947 if (name == NULL)
2948 return NULL;
2949
2950 len = strlen (name);
2951
2952#ifdef HAVE_TARGET_OBJECT_SUFFIX
2953 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2954 if (do_obj && len > 2
2955 && name[len - 2] == '.'
2956 && name[len - 1] == 'o')
2957 {
2958 obstack_grow (&obstack, name, len - 2);
2959 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2960 name = obstack_finish (&obstack);
2961 }
2962#endif
2963
2964#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2965 /* If there is no filetype, make it the executable suffix (which includes
2966 the "."). But don't get confused if we have just "-o". */
2967 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
2968 return name;
2969
2970 for (i = len - 1; i >= 0; i--)
2971 if (IS_DIR_SEPARATOR (name[i]))
2972 break;
2973
2974 for (i++; i < len; i++)
2975 if (name[i] == '.')
2976 return name;
2977
2978 obstack_grow (&obstack, name, len);
2979 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
2980 strlen (TARGET_EXECUTABLE_SUFFIX));
2981 name = obstack_finish (&obstack);
2982#endif
2983
2984 return name;
2985}
2986#endif
2987
2988/* Display the command line switches accepted by gcc. */
2989static void
2990display_help (void)
2991{
2992 printf (_("Usage: %s [options] file...\n"), programname);
2993 fputs (_("Options:\n"), stdout);
2994
2995 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
2996 fputs (_(" --help Display this information\n"), stdout);
2997 fputs (_(" --target-help Display target specific command line options\n"), stdout);
2998 if (! verbose_flag)
2999 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
3000 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
3001 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
3002 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
3003 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
3004 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
3005 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
3006 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
3007 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
3008 fputs (_("\
3009 -print-multi-lib Display the mapping between command line options and\n\
3010 multiple library search directories\n"), stdout);
3011 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
3012 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3013 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3014 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3015 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
3016 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
3017 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3018 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3019 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3020 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3021 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3022 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3023 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3024 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
3025 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
3026 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3027 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3028 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3029 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3030 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3031 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3032 fputs (_("\
3033 -x <language> Specify the language of the following input files\n\
3034 Permissible languages include: c c++ assembler none\n\
3035 'none' means revert to the default behavior of\n\
3036 guessing the language based on the file's extension\n\
3037"), stdout);
3038
3039 printf (_("\
3040\nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3041 passed on to the various sub-processes invoked by %s. In order to pass\n\
3042 other options on to these processes the -W<letter> options must be used.\n\
3043"), programname);
3044
3045 /* The rest of the options are displayed by invocations of the various
3046 sub-processes. */
3047}
3048
3049static void
3050add_preprocessor_option (const char *option, int len)
3051{
3052 n_preprocessor_options++;
3053
3054 if (! preprocessor_options)
3055 preprocessor_options = xmalloc (n_preprocessor_options * sizeof (char *));
3056 else
3057 preprocessor_options = xrealloc (preprocessor_options,
3058 n_preprocessor_options * sizeof (char *));
3059
3060 preprocessor_options [n_preprocessor_options - 1] =
3061 save_string (option, len);
3062}
3063
3064static void
3065add_assembler_option (const char *option, int len)
3066{
3067 n_assembler_options++;
3068
3069 if (! assembler_options)
3070 assembler_options = xmalloc (n_assembler_options * sizeof (char *));
3071 else
3072 assembler_options = xrealloc (assembler_options,
3073 n_assembler_options * sizeof (char *));
3074
3075 assembler_options [n_assembler_options - 1] = save_string (option, len);
3076}
3077
3078static void
3079add_linker_option (const char *option, int len)
3080{
3081 n_linker_options++;
3082
3083 if (! linker_options)
3084 linker_options = xmalloc (n_linker_options * sizeof (char *));
3085 else
3086 linker_options = xrealloc (linker_options,
3087 n_linker_options * sizeof (char *));
3088
3089 linker_options [n_linker_options - 1] = save_string (option, len);
3090}
3091
3092/* Create the vector `switches' and its contents.
3093 Store its length in `n_switches'. */
3094
3095static void
3096process_command (int argc, const char **argv)
3097{
3098 int i;
3099 const char *temp;
3100 char *temp1;
3101 const char *spec_lang = 0;
3102 int last_language_n_infiles;
3103 int have_c = 0;
3104 int have_o = 0;
3105 int lang_n_infiles = 0;
3106#ifdef MODIFY_TARGET_NAME
3107 int is_modify_target_name;
3108 int j;
3109#endif
3110
3111 GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3112
3113 n_switches = 0;
3114 n_infiles = 0;
3115 added_libraries = 0;
3116
3117 /* Figure compiler version from version string. */
3118
3119 compiler_version = temp1 = xstrdup (version_string);
3120
3121 for (; *temp1; ++temp1)
3122 {
3123 if (*temp1 == ' ')
3124 {
3125 *temp1 = '\0';
3126 break;
3127 }
3128 }
3129
3130 /* If there is a -V or -b option (or both), process it now, before
3131 trying to interpret the rest of the command line. */
3132 if (argc > 1 && argv[1][0] == '-'
3133 && (argv[1][1] == 'V' || argv[1][1] == 'b'))
3134 {
3135 const char *new_version = DEFAULT_TARGET_VERSION;
3136 const char *new_machine = DEFAULT_TARGET_MACHINE;
3137 const char *progname = argv[0];
3138 char **new_argv;
3139 char *new_argv0;
3140 int baselen;
3141
3142 while (argc > 1 && argv[1][0] == '-'
3143 && (argv[1][1] == 'V' || argv[1][1] == 'b'))
3144 {
3145 char opt = argv[1][1];
3146 const char *arg;
3147 if (argv[1][2] != '\0')
3148 {
3149 arg = argv[1] + 2;
3150 argc -= 1;
3151 argv += 1;
3152 }
3153 else if (argc > 2)
3154 {
3155 arg = argv[2];
3156 argc -= 2;
3157 argv += 2;
3158 }
3159 else
3160 fatal ("`-%c' option must have argument", opt);
3161 if (opt == 'V')
3162 new_version = arg;
3163 else
3164 new_machine = arg;
3165 }
3166
3167 for (baselen = strlen (progname); baselen > 0; baselen--)
3168 if (IS_DIR_SEPARATOR (progname[baselen-1]))
3169 break;
3170 new_argv0 = xmemdup (progname, baselen,
3171 baselen + concat_length (new_version, new_machine,
3172 "-gcc-", NULL) + 1);
3173 strcpy (new_argv0 + baselen, new_machine);
3174 strcat (new_argv0, "-gcc-");
3175 strcat (new_argv0, new_version);
3176
3177 new_argv = xmemdup (argv, (argc + 1) * sizeof (argv[0]),
3178 (argc + 1) * sizeof (argv[0]));
3179 new_argv[0] = new_argv0;
3180
3181 execvp (new_argv0, new_argv);
3182 fatal ("couldn't run `%s': %s", new_argv0, xstrerror (errno));
3183 }
3184
3185 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3186 see if we can create it from the pathname specified in argv[0]. */
3187
3188 gcc_libexec_prefix = standard_libexec_prefix;
3189#ifndef FREEBSD_NATIVE
3190#ifndef VMS
3191 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3192 if (!gcc_exec_prefix)
3193 {
3194 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
3195 standard_exec_prefix);
3196 gcc_libexec_prefix = make_relative_prefix (argv[0],
3197 standard_bindir_prefix,
3198 standard_libexec_prefix);
3199 if (gcc_exec_prefix)
3200 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3201 }
3202 else
3203 gcc_libexec_prefix = make_relative_prefix (gcc_exec_prefix,
3204 standard_exec_prefix,
3205 standard_libexec_prefix);
3206#else
3207#endif
3208#endif /* not FREEBSD_NATIVE */
3209
3210 if (gcc_exec_prefix)
3211 {
3212 int len = strlen (gcc_exec_prefix);
3213
3214 if (len > (int) sizeof ("/lib/gcc/") - 1
3215 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3216 {
3217 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3218 if (IS_DIR_SEPARATOR (*temp)
3219 && strncmp (temp + 1, "lib", 3) == 0
3220 && IS_DIR_SEPARATOR (temp[4])
3221 && strncmp (temp + 5, "gcc", 3) == 0)
3222 len -= sizeof ("/lib/gcc/") - 1;
3223 }
3224
3225 set_std_prefix (gcc_exec_prefix, len);
3226 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3227 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3228 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3229 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3230 }
3231
3232 /* COMPILER_PATH and LIBRARY_PATH have values
3233 that are lists of directory names with colons. */
3234
3235 GET_ENVIRONMENT (temp, "COMPILER_PATH");
3236 if (temp)
3237 {
3238 const char *startp, *endp;
3239 char *nstore = alloca (strlen (temp) + 3);
3240
3241 startp = endp = temp;
3242 while (1)
3243 {
3244 if (*endp == PATH_SEPARATOR || *endp == 0)
3245 {
3246 strncpy (nstore, startp, endp - startp);
3247 if (endp == startp)
3248 strcpy (nstore, concat (".", dir_separator_str, NULL));
3249 else if (!IS_DIR_SEPARATOR (endp[-1]))
3250 {
3251 nstore[endp - startp] = DIR_SEPARATOR;
3252 nstore[endp - startp + 1] = 0;
3253 }
3254 else
3255 nstore[endp - startp] = 0;
3256 add_prefix (&exec_prefixes, nstore, 0,
3257 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3258 add_prefix (&include_prefixes,
3259 concat (nstore, "include", NULL),
3260 0, PREFIX_PRIORITY_LAST, 0, NULL, 0);
3261 if (*endp == 0)
3262 break;
3263 endp = startp = endp + 1;
3264 }
3265 else
3266 endp++;
3267 }
3268 }
3269
3270 GET_ENVIRONMENT (temp, LIBRARY_PATH_ENV);
3271 if (temp && *cross_compile == '0')
3272 {
3273 const char *startp, *endp;
3274 char *nstore = alloca (strlen (temp) + 3);
3275
3276 startp = endp = temp;
3277 while (1)
3278 {
3279 if (*endp == PATH_SEPARATOR || *endp == 0)
3280 {
3281 strncpy (nstore, startp, endp - startp);
3282 if (endp == startp)
3283 strcpy (nstore, concat (".", dir_separator_str, NULL));
3284 else if (!IS_DIR_SEPARATOR (endp[-1]))
3285 {
3286 nstore[endp - startp] = DIR_SEPARATOR;
3287 nstore[endp - startp + 1] = 0;
3288 }
3289 else
3290 nstore[endp - startp] = 0;
3291 add_prefix (&startfile_prefixes, nstore, NULL,
3292 PREFIX_PRIORITY_LAST, 0, NULL, 1);
3293 if (*endp == 0)
3294 break;
3295 endp = startp = endp + 1;
3296 }
3297 else
3298 endp++;
3299 }
3300 }
3301
3302 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3303 GET_ENVIRONMENT (temp, "LPATH");
3304 if (temp && *cross_compile == '0')
3305 {
3306 const char *startp, *endp;
3307 char *nstore = alloca (strlen (temp) + 3);
3308
3309 startp = endp = temp;
3310 while (1)
3311 {
3312 if (*endp == PATH_SEPARATOR || *endp == 0)
3313 {
3314 strncpy (nstore, startp, endp - startp);
3315 if (endp == startp)
3316 strcpy (nstore, concat (".", dir_separator_str, NULL));
3317 else if (!IS_DIR_SEPARATOR (endp[-1]))
3318 {
3319 nstore[endp - startp] = DIR_SEPARATOR;
3320 nstore[endp - startp + 1] = 0;
3321 }
3322 else
3323 nstore[endp - startp] = 0;
3324 add_prefix (&startfile_prefixes, nstore, NULL,
3325 PREFIX_PRIORITY_LAST, 0, NULL, 1);
3326 if (*endp == 0)
3327 break;
3328 endp = startp = endp + 1;
3329 }
3330 else
3331 endp++;
3332 }
3333 }
3334
3335 /* Options specified as if they appeared on the command line. */
3336 temp = getenv ("GCC_OPTIONS");
3337 if ((temp) && (strlen (temp) > 0))
3338 {
3339 int len;
3340 int optc = 1;
3341 int new_argc;
3342 const char **new_argv;
3343 char *envopts;
3344
3345 while (isspace (*temp))
3346 temp++;
3347 len = strlen (temp);
3348 envopts = (char *) xmalloc (len + 1);
3349 strcpy (envopts, temp);
3350
3351 for (i = 0; i < (len - 1); i++)
3352 if ((isspace (envopts[i])) && ! (isspace (envopts[i+1])))
3353 optc++;
3354
3355 new_argv = (const char **) alloca ((optc + argc) * sizeof(char *));
3356
3357 for (i = 0, new_argc = 1; new_argc <= optc; new_argc++)
3358 {
3359 while (isspace (envopts[i]))
3360 i++;
3361 new_argv[new_argc] = envopts + i;
3362 while (!isspace (envopts[i]) && (envopts[i] != '\0'))
3363 i++;
3364 envopts[i++] = '\0';
3365 }
3366 for (i = 1; i < argc; i++)
3367 new_argv[new_argc++] = argv[i];
3368
3369 argv = new_argv;
3370 argc = new_argc;
3371 }
3372
3373 /* Convert new-style -- options to old-style. */
3374 translate_options (&argc, (const char *const **) &argv);
3375
3376 /* Do language-specific adjustment/addition of flags. */
3377 lang_specific_driver (&argc, (const char *const **) &argv, &added_libraries);
3378
3379 /* Scan argv twice. Here, the first time, just count how many switches
3380 there will be in their vector, and how many input files in theirs.
3381 Here we also parse the switches that cc itself uses (e.g. -v). */
3382
3383 for (i = 1; i < argc; i++)
3384 {
3385 if (! strcmp (argv[i], "-dumpspecs"))
3386 {
3387 struct spec_list *sl;
3388 init_spec ();
3389 for (sl = specs; sl; sl = sl->next)
3390 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3391 if (link_command_spec)
3392 printf ("*link_command:\n%s\n\n", link_command_spec);
3393 exit (0);
3394 }
3395 else if (! strcmp (argv[i], "-dumpversion"))
3396 {
3397 printf ("%s\n", spec_version);
3398 exit (0);
3399 }
3400 else if (! strcmp (argv[i], "-dumpmachine"))
3401 {
3402 printf ("%s\n", spec_machine);
3403 exit (0);
3404 }
3405 else if (strcmp (argv[i], "-fversion") == 0)
3406 {
3407 /* translate_options () has turned --version into -fversion. */
3408 printf (_("%s (GCC) %s\n"), programname, version_string);
| 28
29/* This program is the user interface to the C compiler and possibly to
30other compilers. It is used because compilation is a complicated procedure
31which involves running several programs and passing temporary files between
32them, forwarding the users switches to those programs selectively,
33and deleting the temporary files at the end.
34
35CC recognizes how to compile each input file by suffixes in the file names.
36Once it knows which kind of compilation to perform, the procedure for
37compilation is specified by a string called a "spec". */
38
39/* A Short Introduction to Adding a Command-Line Option.
40
41 Before adding a command-line option, consider if it is really
42 necessary. Each additional command-line option adds complexity and
43 is difficult to remove in subsequent versions.
44
45 In the following, consider adding the command-line argument
46 `--bar'.
47
48 1. Each command-line option is specified in the specs file. The
49 notation is described below in the comment entitled "The Specs
50 Language". Read it.
51
52 2. In this file, add an entry to "option_map" equating the long
53 `--' argument version and any shorter, single letter version. Read
54 the comments in the declaration of "struct option_map" for an
55 explanation. Do not omit the first `-'.
56
57 3. Look in the "specs" file to determine which program or option
58 list should be given the argument, e.g., "cc1_options". Add the
59 appropriate syntax for the shorter option version to the
60 corresponding "const char *" entry in this file. Omit the first
61 `-' from the option. For example, use `-bar', rather than `--bar'.
62
63 4. If the argument takes an argument, e.g., `--baz argument1',
64 modify either DEFAULT_SWITCH_TAKES_ARG or
65 DEFAULT_WORD_SWITCH_TAKES_ARG in this file. Omit the first `-'
66 from `--baz'.
67
68 5. Document the option in this file's display_help(). If the
69 option is passed to a subprogram, modify its corresponding
70 function, e.g., cppinit.c:print_help() or toplev.c:display_help(),
71 instead.
72
73 6. Compile and test. Make sure that your new specs file is being
74 read. For example, use a debugger to investigate the value of
75 "specs_file" in main(). */
76
77#include "config.h"
78#include "system.h"
79#include "coretypes.h"
80#include "multilib.h" /* before tm.h */
81#include "tm.h"
82#include <signal.h>
83#if ! defined( SIGCHLD ) && defined( SIGCLD )
84# define SIGCHLD SIGCLD
85#endif
86#include "obstack.h"
87#include "intl.h"
88#include "prefix.h"
89#include "gcc.h"
90#include "flags.h"
91
92#ifdef HAVE_SYS_RESOURCE_H
93#include <sys/resource.h>
94#endif
95#if defined (HAVE_DECL_GETRUSAGE) && !HAVE_DECL_GETRUSAGE
96extern int getrusage (int, struct rusage *);
97#endif
98
99/* By default there is no special suffix for target executables. */
100/* FIXME: when autoconf is fixed, remove the host check - dj */
101#if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
102#define HAVE_TARGET_EXECUTABLE_SUFFIX
103#endif
104
105/* By default there is no special suffix for host executables. */
106#ifdef HOST_EXECUTABLE_SUFFIX
107#define HAVE_HOST_EXECUTABLE_SUFFIX
108#else
109#define HOST_EXECUTABLE_SUFFIX ""
110#endif
111
112/* By default, the suffix for target object files is ".o". */
113#ifdef TARGET_OBJECT_SUFFIX
114#define HAVE_TARGET_OBJECT_SUFFIX
115#else
116#define TARGET_OBJECT_SUFFIX ".o"
117#endif
118
119static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
120
121/* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
122#ifndef LIBRARY_PATH_ENV
123#define LIBRARY_PATH_ENV "LIBRARY_PATH"
124#endif
125
126#ifndef HAVE_KILL
127#define kill(p,s) raise(s)
128#endif
129
130/* If a stage of compilation returns an exit status >= 1,
131 compilation of that file ceases. */
132
133#define MIN_FATAL_STATUS 1
134
135/* Flag set by cppspec.c to 1. */
136int is_cpp_driver;
137
138/* Flag saying to pass the greatest exit code returned by a sub-process
139 to the calling program. */
140static int pass_exit_codes;
141
142/* Definition of string containing the arguments given to configure. */
143#include "configargs.h"
144
145/* Flag saying to print the directories gcc will search through looking for
146 programs, libraries, etc. */
147
148static int print_search_dirs;
149
150/* Flag saying to print the full filename of this file
151 as found through our usual search mechanism. */
152
153static const char *print_file_name = NULL;
154
155/* As print_file_name, but search for executable file. */
156
157static const char *print_prog_name = NULL;
158
159/* Flag saying to print the relative path we'd use to
160 find libgcc.a given the current compiler flags. */
161
162static int print_multi_directory;
163
164/* Flag saying to print the relative path we'd use to
165 find OS libraries given the current compiler flags. */
166
167static int print_multi_os_directory;
168
169/* Flag saying to print the list of subdirectories and
170 compiler flags used to select them in a standard form. */
171
172static int print_multi_lib;
173
174/* Flag saying to print the command line options understood by gcc and its
175 sub-processes. */
176
177static int print_help_list;
178
179/* Flag indicating whether we should print the command and arguments */
180
181static int verbose_flag;
182
183/* Flag indicating whether we should ONLY print the command and
184 arguments (like verbose_flag) without executing the command.
185 Displayed arguments are quoted so that the generated command
186 line is suitable for execution. This is intended for use in
187 shell scripts to capture the driver-generated command line. */
188static int verbose_only_flag;
189
190/* Flag indicating to print target specific command line options. */
191
192static int target_help_flag;
193
194/* Flag indicating whether we should report subprocess execution times
195 (if this is supported by the system - see pexecute.c). */
196
197static int report_times;
198
199/* Nonzero means place this string before uses of /, so that include
200 and library files can be found in an alternate location. */
201
202#ifdef TARGET_SYSTEM_ROOT
203static const char *target_system_root = TARGET_SYSTEM_ROOT;
204#else
205static const char *target_system_root = 0;
206#endif
207
208/* Nonzero means pass the updated target_system_root to the compiler. */
209
210static int target_system_root_changed;
211
212/* Nonzero means append this string to target_system_root. */
213
214static const char *target_sysroot_suffix = 0;
215
216/* Nonzero means append this string to target_system_root for headers. */
217
218static const char *target_sysroot_hdrs_suffix = 0;
219
220/* Nonzero means write "temp" files in source directory
221 and use the source file's name in them, and don't delete them. */
222
223static int save_temps_flag;
224
225/* Nonzero means use pipes to communicate between subprocesses.
226 Overridden by either of the above two flags. */
227
228static int use_pipes;
229
230/* The compiler version. */
231
232static const char *compiler_version;
233
234/* The target version specified with -V */
235
236static const char *const spec_version = DEFAULT_TARGET_VERSION;
237
238/* The target machine specified with -b. */
239
240static const char *spec_machine = DEFAULT_TARGET_MACHINE;
241
242/* Nonzero if cross-compiling.
243 When -b is used, the value comes from the `specs' file. */
244
245#ifdef CROSS_COMPILE
246static const char *cross_compile = "1";
247#else
248static const char *cross_compile = "0";
249#endif
250
251#ifdef MODIFY_TARGET_NAME
252
253/* Information on how to alter the target name based on a command-line
254 switch. The only case we support now is simply appending or deleting a
255 string to or from the end of the first part of the configuration name. */
256
257static const struct modify_target
258{
259 const char *const sw;
260 const enum add_del {ADD, DELETE} add_del;
261 const char *const str;
262}
263modify_target[] = MODIFY_TARGET_NAME;
264#endif
265
266/* The number of errors that have occurred; the link phase will not be
267 run if this is nonzero. */
268static int error_count = 0;
269
270/* Greatest exit code of sub-processes that has been encountered up to
271 now. */
272static int greatest_status = 1;
273
274/* This is the obstack which we use to allocate many strings. */
275
276static struct obstack obstack;
277
278/* This is the obstack to build an environment variable to pass to
279 collect2 that describes all of the relevant switches of what to
280 pass the compiler in building the list of pointers to constructors
281 and destructors. */
282
283static struct obstack collect_obstack;
284
285/* These structs are used to collect resource usage information for
286 subprocesses. */
287#ifdef HAVE_GETRUSAGE
288static struct rusage rus, prus;
289#endif
290
291/* Forward declaration for prototypes. */
292struct path_prefix;
293
294static void init_spec (void);
295static void store_arg (const char *, int, int);
296static char *load_specs (const char *);
297static void read_specs (const char *, int);
298static void set_spec (const char *, const char *);
299static struct compiler *lookup_compiler (const char *, size_t, const char *);
300static char *build_search_list (struct path_prefix *, const char *, int);
301static void putenv_from_prefixes (struct path_prefix *, const char *);
302static int access_check (const char *, int);
303static char *find_a_file (struct path_prefix *, const char *, int, int);
304static void add_prefix (struct path_prefix *, const char *, const char *,
305 int, int, int *, int);
306static void add_sysrooted_prefix (struct path_prefix *, const char *,
307 const char *, int, int, int *, int);
308static void translate_options (int *, const char *const **);
309static char *skip_whitespace (char *);
310static void delete_if_ordinary (const char *);
311static void delete_temp_files (void);
312static void delete_failure_queue (void);
313static void clear_failure_queue (void);
314static int check_live_switch (int, int);
315static const char *handle_braces (const char *);
316static inline bool input_suffix_matches (const char *, const char *);
317static inline bool switch_matches (const char *, const char *, int);
318static inline void mark_matching_switches (const char *, const char *, int);
319static inline void process_marked_switches (void);
320static const char *process_brace_body (const char *, const char *, const char *, int, int);
321static const struct spec_function *lookup_spec_function (const char *);
322static const char *eval_spec_function (const char *, const char *);
323static const char *handle_spec_function (const char *);
324static char *save_string (const char *, int);
325static void set_collect_gcc_options (void);
326static int do_spec_1 (const char *, int, const char *);
327static int do_spec_2 (const char *);
328static void do_option_spec (const char *, const char *);
329static void do_self_spec (const char *);
330static const char *find_file (const char *);
331static int is_directory (const char *, const char *, int);
332static const char *validate_switches (const char *);
333static void validate_all_switches (void);
334static inline void validate_switches_from_spec (const char *);
335static void give_switch (int, int);
336static int used_arg (const char *, int);
337static int default_arg (const char *, int);
338static void set_multilib_dir (void);
339static void print_multilib_info (void);
340static void perror_with_name (const char *);
341static void pfatal_pexecute (const char *, const char *) ATTRIBUTE_NORETURN;
342static void notice (const char *, ...) ATTRIBUTE_PRINTF_1;
343static void display_help (void);
344static void add_preprocessor_option (const char *, int);
345static void add_assembler_option (const char *, int);
346static void add_linker_option (const char *, int);
347static void process_command (int, const char **);
348static int execute (void);
349static void alloc_args (void);
350static void clear_args (void);
351static void fatal_error (int);
352#ifdef ENABLE_SHARED_LIBGCC
353static void init_gcc_specs (struct obstack *, const char *, const char *,
354 const char *);
355#endif
356#if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
357static const char *convert_filename (const char *, int, int);
358#endif
359
360static const char *if_exists_spec_function (int, const char **);
361static const char *if_exists_else_spec_function (int, const char **);
362
363/* The Specs Language
364
365Specs are strings containing lines, each of which (if not blank)
366is made up of a program name, and arguments separated by spaces.
367The program name must be exact and start from root, since no path
368is searched and it is unreliable to depend on the current working directory.
369Redirection of input or output is not supported; the subprograms must
370accept filenames saying what files to read and write.
371
372In addition, the specs can contain %-sequences to substitute variable text
373or for conditional text. Here is a table of all defined %-sequences.
374Note that spaces are not generated automatically around the results of
375expanding these sequences; therefore, you can concatenate them together
376or with constant text in a single argument.
377
378 %% substitute one % into the program name or argument.
379 %i substitute the name of the input file being processed.
380 %b substitute the basename of the input file being processed.
381 This is the substring up to (and not including) the last period
382 and not including the directory.
383 %B same as %b, but include the file suffix (text after the last period).
384 %gSUFFIX
385 substitute a file name that has suffix SUFFIX and is chosen
386 once per compilation, and mark the argument a la %d. To reduce
387 exposure to denial-of-service attacks, the file name is now
388 chosen in a way that is hard to predict even when previously
389 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
390 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
391 the regexp "[.A-Za-z]*%O"; "%O" is treated exactly as if it
392 had been pre-processed. Previously, %g was simply substituted
393 with a file name chosen once per compilation, without regard
394 to any appended suffix (which was therefore treated just like
395 ordinary text), making such attacks more likely to succeed.
396 %|SUFFIX
397 like %g, but if -pipe is in effect, expands simply to "-".
398 %mSUFFIX
399 like %g, but if -pipe is in effect, expands to nothing. (We have both
400 %| and %m to accommodate differences between system assemblers; see
401 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
402 %uSUFFIX
403 like %g, but generates a new temporary file name even if %uSUFFIX
404 was already seen.
405 %USUFFIX
406 substitutes the last file name generated with %uSUFFIX, generating a
407 new one if there is no such last file name. In the absence of any
408 %uSUFFIX, this is just like %gSUFFIX, except they don't share
409 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
410 would involve the generation of two distinct file names, one
411 for each `%g.s' and another for each `%U.s'. Previously, %U was
412 simply substituted with a file name chosen for the previous %u,
413 without regard to any appended suffix.
414 %jSUFFIX
415 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
416 writable, and if save-temps is off; otherwise, substitute the name
417 of a temporary file, just like %u. This temporary file is not
418 meant for communication between processes, but rather as a junk
419 disposal mechanism.
420 %.SUFFIX
421 substitutes .SUFFIX for the suffixes of a matched switch's args when
422 it is subsequently output with %*. SUFFIX is terminated by the next
423 space or %.
424 %d marks the argument containing or following the %d as a
425 temporary file name, so that that file will be deleted if CC exits
426 successfully. Unlike %g, this contributes no text to the argument.
427 %w marks the argument containing or following the %w as the
428 "output file" of this compilation. This puts the argument
429 into the sequence of arguments that %o will substitute later.
430 %V indicates that this compilation produces no "output file".
431 %W{...}
432 like %{...} but mark last argument supplied within
433 as a file to be deleted on failure.
434 %o substitutes the names of all the output files, with spaces
435 automatically placed around them. You should write spaces
436 around the %o as well or the results are undefined.
437 %o is for use in the specs for running the linker.
438 Input files whose names have no recognized suffix are not compiled
439 at all, but they are included among the output files, so they will
440 be linked.
441 %O substitutes the suffix for object files. Note that this is
442 handled specially when it immediately follows %g, %u, or %U
443 (with or without a suffix argument) because of the need for
444 those to form complete file names. The handling is such that
445 %O is treated exactly as if it had already been substituted,
446 except that %g, %u, and %U do not currently support additional
447 SUFFIX characters following %O as they would following, for
448 example, `.o'.
449 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
450 (made from TARGET_SYSTEM_ROOT), and -isystem (made from COMPILER_PATH
451 and -B options) as necessary.
452 %s current argument is the name of a library or startup file of some sort.
453 Search for that file in a standard list of directories
454 and substitute the full name found.
455 %eSTR Print STR as an error message. STR is terminated by a newline.
456 Use this when inconsistent options are detected.
457 %nSTR Print STR as a notice. STR is terminated by a newline.
458 %x{OPTION} Accumulate an option for %X.
459 %X Output the accumulated linker options specified by compilations.
460 %Y Output the accumulated assembler options specified by compilations.
461 %Z Output the accumulated preprocessor options specified by compilations.
462 %a process ASM_SPEC as a spec.
463 This allows config.h to specify part of the spec for running as.
464 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
465 used here. This can be used to run a post-processor after the
466 assembler has done its job.
467 %D Dump out a -L option for each directory in startfile_prefixes.
468 If multilib_dir is set, extra entries are generated with it affixed.
469 %l process LINK_SPEC as a spec.
470 %L process LIB_SPEC as a spec.
471 %G process LIBGCC_SPEC as a spec.
472 %M output multilib_dir with directory separators replaced with "_";
473 if multilib_dir is not set or is ".", output "".
474 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
475 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
476 %C process CPP_SPEC as a spec.
477 %1 process CC1_SPEC as a spec.
478 %2 process CC1PLUS_SPEC as a spec.
479 %* substitute the variable part of a matched option. (See below.)
480 Note that each comma in the substituted string is replaced by
481 a single space.
482 %<S remove all occurrences of -S from the command line.
483 Note - this command is position dependent. % commands in the
484 spec string before this one will see -S, % commands in the
485 spec string after this one will not.
486 %<S* remove all occurrences of all switches beginning with -S from the
487 command line.
488 %:function(args)
489 Call the named function FUNCTION, passing it ARGS. ARGS is
490 first processed as a nested spec string, then split into an
491 argument vector in the usual fashion. The function returns
492 a string which is processed as if it had appeared literally
493 as part of the current spec.
494 %{S} substitutes the -S switch, if that switch was given to CC.
495 If that switch was not specified, this substitutes nothing.
496 Here S is a metasyntactic variable.
497 %{S*} substitutes all the switches specified to CC whose names start
498 with -S. This is used for -o, -I, etc; switches that take
499 arguments. CC considers `-o foo' as being one switch whose
500 name starts with `o'. %{o*} would substitute this text,
501 including the space; thus, two arguments would be generated.
502 %{S*&T*} likewise, but preserve order of S and T options (the order
503 of S and T in the spec is not significant). Can be any number
504 of ampersand-separated variables; for each the wild card is
505 optional. Useful for CPP as %{D*&U*&A*}.
506
507 %{S:X} substitutes X, if the -S switch was given to CC.
508 %{!S:X} substitutes X, if the -S switch was NOT given to CC.
509 %{S*:X} substitutes X if one or more switches whose names start
510 with -S was given to CC. Normally X is substituted only
511 once, no matter how many such switches appeared. However,
512 if %* appears somewhere in X, then X will be substituted
513 once for each matching switch, with the %* replaced by the
514 part of that switch that matched the '*'.
515 %{.S:X} substitutes X, if processing a file with suffix S.
516 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
517
518 %{S|T:X} substitutes X if either -S or -T was given to CC. This may be
519 combined with !, ., and * as above binding stronger than the OR.
520 If %* appears in X, all of the alternatives must be starred, and
521 only the first matching alternative is substituted.
522 %{S:X; if S was given to CC, substitutes X;
523 T:Y; else if T was given to CC, substitutes Y;
524 :D} else substitutes D. There can be as many clauses as you need.
525 This may be combined with ., !, |, and * as above.
526
527 %(Spec) processes a specification defined in a specs file as *Spec:
528 %[Spec] as above, but put __ around -D arguments
529
530The conditional text X in a %{S:X} or similar construct may contain
531other nested % constructs or spaces, or even newlines. They are
532processed as usual, as described above. Trailing white space in X is
533ignored. White space may also appear anywhere on the left side of the
534colon in these constructs, except between . or * and the corresponding
535word.
536
537The -O, -f, -m, and -W switches are handled specifically in these
538constructs. If another value of -O or the negated form of a -f, -m, or
539-W switch is found later in the command line, the earlier switch
540value is ignored, except with {S*} where S is just one letter; this
541passes all matching options.
542
543The character | at the beginning of the predicate text is used to indicate
544that a command should be piped to the following command, but only if -pipe
545is specified.
546
547Note that it is built into CC which switches take arguments and which
548do not. You might think it would be useful to generalize this to
549allow each compiler's spec to say which switches take arguments. But
550this cannot be done in a consistent fashion. CC cannot even decide
551which input files have been specified without knowing which switches
552take arguments, and it must know which input files to compile in order
553to tell which compilers to run.
554
555CC also knows implicitly that arguments starting in `-l' are to be
556treated as compiler output files, and passed to the linker in their
557proper position among the other output files. */
558
559/* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
560
561/* config.h can define ASM_SPEC to provide extra args to the assembler
562 or extra switch-translations. */
563#ifndef ASM_SPEC
564#define ASM_SPEC ""
565#endif
566
567/* config.h can define ASM_FINAL_SPEC to run a post processor after
568 the assembler has run. */
569#ifndef ASM_FINAL_SPEC
570#define ASM_FINAL_SPEC ""
571#endif
572
573/* config.h can define CPP_SPEC to provide extra args to the C preprocessor
574 or extra switch-translations. */
575#ifndef CPP_SPEC
576#define CPP_SPEC ""
577#endif
578
579/* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
580 or extra switch-translations. */
581#ifndef CC1_SPEC
582#define CC1_SPEC ""
583#endif
584
585/* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
586 or extra switch-translations. */
587#ifndef CC1PLUS_SPEC
588#define CC1PLUS_SPEC ""
589#endif
590
591/* config.h can define LINK_SPEC to provide extra args to the linker
592 or extra switch-translations. */
593#ifndef LINK_SPEC
594#define LINK_SPEC ""
595#endif
596
597/* config.h can define LIB_SPEC to override the default libraries. */
598#ifndef LIB_SPEC
599#define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
600#endif
601
602/* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
603 included. */
604#ifndef LIBGCC_SPEC
605#if defined(LINK_LIBGCC_SPECIAL) || defined(LINK_LIBGCC_SPECIAL_1)
606/* Have gcc do the search for libgcc.a. */
607#define LIBGCC_SPEC "libgcc.a%s"
608#else
609#define LIBGCC_SPEC "-lgcc"
610#endif
611#endif
612
613/* config.h can define STARTFILE_SPEC to override the default crt0 files. */
614#ifndef STARTFILE_SPEC
615#define STARTFILE_SPEC \
616 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
617#endif
618
619/* config.h can define SWITCHES_NEED_SPACES to control which options
620 require spaces between the option and the argument. */
621#ifndef SWITCHES_NEED_SPACES
622#define SWITCHES_NEED_SPACES ""
623#endif
624
625/* config.h can define ENDFILE_SPEC to override the default crtn files. */
626#ifndef ENDFILE_SPEC
627#define ENDFILE_SPEC ""
628#endif
629
630#ifndef LINKER_NAME
631#define LINKER_NAME "collect2"
632#endif
633
634/* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
635 to the assembler. */
636#ifndef ASM_DEBUG_SPEC
637# if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
638 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
639# define ASM_DEBUG_SPEC \
640 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
641 ? "%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}" \
642 : "%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}")
643# else
644# if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
645# define ASM_DEBUG_SPEC "%{g*:--gstabs}"
646# endif
647# if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
648# define ASM_DEBUG_SPEC "%{g*:--gdwarf2}"
649# endif
650# endif
651#endif
652#ifndef ASM_DEBUG_SPEC
653# define ASM_DEBUG_SPEC ""
654#endif
655
656/* Here is the spec for running the linker, after compiling all files. */
657
658/* This is overridable by the target in case they need to specify the
659 -lgcc and -lc order specially, yet not require them to override all
660 of LINK_COMMAND_SPEC. */
661#ifndef LINK_GCC_C_SEQUENCE_SPEC
662#define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
663#endif
664
665#ifndef LINK_PIE_SPEC
666#ifdef HAVE_LD_PIE
667#define LINK_PIE_SPEC "%{pie:-pie} "
668#else
669#define LINK_PIE_SPEC "%{pie:} "
670#endif
671#endif
672
673/* -u* was put back because both BSD and SysV seem to support it. */
674/* %{static:} simply prevents an error message if the target machine
675 doesn't handle -static. */
676/* We want %{T*} after %{L*} and %D so that it can be used to specify linker
677 scripts which exist in user specified directories, or in standard
678 directories. */
679#ifndef LINK_COMMAND_SPEC
680#define LINK_COMMAND_SPEC "\
681%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
682 %(linker) %l " LINK_PIE_SPEC "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\
683 %{s} %{t} %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
684 %{static:} %{L*} %(link_libgcc) %o %{fprofile-arcs|fprofile-generate:-lgcov}\
685 %{!nostdlib:%{!nodefaultlibs:%(link_gcc_c_sequence)}}\
686 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
687#endif
688
689#ifndef LINK_LIBGCC_SPEC
690# ifdef LINK_LIBGCC_SPECIAL
691/* Don't generate -L options for startfile prefix list. */
692# define LINK_LIBGCC_SPEC ""
693# else
694/* Do generate them. */
695# define LINK_LIBGCC_SPEC "%D"
696# endif
697#endif
698
699#ifndef STARTFILE_PREFIX_SPEC
700# define STARTFILE_PREFIX_SPEC ""
701#endif
702
703#ifndef SYSROOT_SUFFIX_SPEC
704# define SYSROOT_SUFFIX_SPEC ""
705#endif
706
707#ifndef SYSROOT_HEADERS_SUFFIX_SPEC
708# define SYSROOT_HEADERS_SUFFIX_SPEC ""
709#endif
710
711static const char *asm_debug;
712static const char *cpp_spec = CPP_SPEC;
713static const char *cc1_spec = CC1_SPEC;
714static const char *cc1plus_spec = CC1PLUS_SPEC;
715static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
716static const char *asm_spec = ASM_SPEC;
717static const char *asm_final_spec = ASM_FINAL_SPEC;
718static const char *link_spec = LINK_SPEC;
719static const char *lib_spec = LIB_SPEC;
720static const char *libgcc_spec = LIBGCC_SPEC;
721static const char *endfile_spec = ENDFILE_SPEC;
722static const char *startfile_spec = STARTFILE_SPEC;
723static const char *switches_need_spaces = SWITCHES_NEED_SPACES;
724static const char *linker_name_spec = LINKER_NAME;
725static const char *link_command_spec = LINK_COMMAND_SPEC;
726static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
727static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
728static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
729static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
730
731/* Standard options to cpp, cc1, and as, to reduce duplication in specs.
732 There should be no need to override these in target dependent files,
733 but we need to copy them to the specs file so that newer versions
734 of the GCC driver can correctly drive older tool chains with the
735 appropriate -B options. */
736
737/* When cpplib handles traditional preprocessing, get rid of this, and
738 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
739 that we default the front end language better. */
740static const char *trad_capable_cpp =
741"cc1 -E %{traditional|ftraditional|traditional-cpp:-traditional-cpp}";
742
743/* We don't wrap .d files in %W{} since a missing .d file, and
744 therefore no dependency entry, confuses make into thinking a .o
745 file that happens to exist is up-to-date. */
746static const char *cpp_unique_options =
747"%{C|CC:%{!E:%eGCC does not support -C or -CC without -E}}\
748 %{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*} %{P} %I\
749 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
750 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
751 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
752 %{!E:%{!M:%{!MM:%{MD|MMD:%{o*:-MQ %*}}}}}\
753 %{remap} %{g3:-dD} %{H} %C %{D*&U*&A*} %{i*} %Z %i\
754 %{E|M|MM:%W{o*}}";
755
756/* This contains cpp options which are common with cc1_options and are passed
757 only when preprocessing only to avoid duplication. We pass the cc1 spec
758 options to the preprocessor so that it the cc1 spec may manipulate
759 options used to set target flags. Those special target flags settings may
760 in turn cause preprocessor symbols to be defined specially. */
761static const char *cpp_options =
762"%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
763 %{f*} %{g*:%{!g0:%{!fno-working-directory:-fworking-directory}}} %{O*}\
764 %{undef}";
765
766/* This contains cpp options which are not passed when the preprocessor
767 output will be used by another program. */
768static const char *cpp_debug_options = "%{d*}";
769
770/* NB: This is shared amongst all front-ends. */
771static const char *cc1_options =
772"%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
773 %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\
774 %{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}%{!c:%{!S:-auxbase %b}}\
775 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
776 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
777 %{Qn:-fno-ident} %{--help:--help}\
778 %{--target-help:--target-help}\
779 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
780 %{fsyntax-only:-o %j} %{-param*}";
781
782static const char *asm_options =
783"%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
784
785static const char *invoke_as =
786#ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
787"%{!S:-o %|.s |\n as %(asm_options) %|.s %A }";
788#else
789"%{!S:-o %|.s |\n as %(asm_options) %m.s %A }";
790#endif
791
792/* Some compilers have limits on line lengths, and the multilib_select
793 and/or multilib_matches strings can be very long, so we build them at
794 run time. */
795static struct obstack multilib_obstack;
796static const char *multilib_select;
797static const char *multilib_matches;
798static const char *multilib_defaults;
799static const char *multilib_exclusions;
800
801/* Check whether a particular argument is a default argument. */
802
803#ifndef MULTILIB_DEFAULTS
804#define MULTILIB_DEFAULTS { "" }
805#endif
806
807static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
808
809#ifndef DRIVER_SELF_SPECS
810#define DRIVER_SELF_SPECS ""
811#endif
812
813static const char *const driver_self_specs[] = { DRIVER_SELF_SPECS };
814
815#ifndef OPTION_DEFAULT_SPECS
816#define OPTION_DEFAULT_SPECS { "", "" }
817#endif
818
819struct default_spec
820{
821 const char *name;
822 const char *spec;
823};
824
825static const struct default_spec
826 option_default_specs[] = { OPTION_DEFAULT_SPECS };
827
828struct user_specs
829{
830 struct user_specs *next;
831 const char *filename;
832};
833
834static struct user_specs *user_specs_head, *user_specs_tail;
835
836#ifndef SWITCH_TAKES_ARG
837#define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR)
838#endif
839
840#ifndef WORD_SWITCH_TAKES_ARG
841#define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
842#endif
843
844#ifdef HAVE_TARGET_EXECUTABLE_SUFFIX
845/* This defines which switches stop a full compilation. */
846#define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \
847 ((CHAR) == 'c' || (CHAR) == 'S')
848
849#ifndef SWITCH_CURTAILS_COMPILATION
850#define SWITCH_CURTAILS_COMPILATION(CHAR) \
851 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR)
852#endif
853#endif
854
855/* Record the mapping from file suffixes for compilation specs. */
856
857struct compiler
858{
859 const char *suffix; /* Use this compiler for input files
860 whose names end in this suffix. */
861
862 const char *spec; /* To use this compiler, run this spec. */
863
864 const char *cpp_spec; /* If non-NULL, substitute this spec
865 for `%C', rather than the usual
866 cpp_spec. */
867};
868
869/* Pointer to a vector of `struct compiler' that gives the spec for
870 compiling a file, based on its suffix.
871 A file that does not end in any of these suffixes will be passed
872 unchanged to the loader and nothing else will be done to it.
873
874 An entry containing two 0s is used to terminate the vector.
875
876 If multiple entries match a file, the last matching one is used. */
877
878static struct compiler *compilers;
879
880/* Number of entries in `compilers', not counting the null terminator. */
881
882static int n_compilers;
883
884/* The default list of file name suffixes and their compilation specs. */
885
886static const struct compiler default_compilers[] =
887{
888 /* Add lists of suffixes of known languages here. If those languages
889 were not present when we built the driver, we will hit these copies
890 and be given a more meaningful error than "file not used since
891 linking is not done". */
892 {".m", "#Objective-C", 0}, {".mi", "#Objective-C", 0},
893 {".cc", "#C++", 0}, {".cxx", "#C++", 0}, {".cpp", "#C++", 0},
894 {".cp", "#C++", 0}, {".c++", "#C++", 0}, {".C", "#C++", 0},
895 {".CPP", "#C++", 0}, {".ii", "#C++", 0},
896 {".ads", "#Ada", 0}, {".adb", "#Ada", 0},
897 {".f", "#Fortran", 0}, {".for", "#Fortran", 0}, {".fpp", "#Fortran", 0},
898 {".F", "#Fortran", 0}, {".FOR", "#Fortran", 0}, {".FPP", "#Fortran", 0},
899 {".r", "#Ratfor", 0},
900 {".p", "#Pascal", 0}, {".pas", "#Pascal", 0},
901 {".java", "#Java", 0}, {".class", "#Java", 0},
902 {".zip", "#Java", 0}, {".jar", "#Java", 0},
903 /* Next come the entries for C. */
904 {".c", "@c", 0},
905 {"@c",
906 /* cc1 has an integrated ISO C preprocessor. We should invoke the
907 external preprocessor if -save-temps is given. */
908 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
909 %{!E:%{!M:%{!MM:\
910 %{traditional|ftraditional:\
911%eGNU C no longer supports -traditional without -E}\
912 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
913 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\
914 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} \
915 %(cc1_options)}\
916 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
917 cc1 %(cpp_unique_options) %(cc1_options)}}}\
918 %{!fsyntax-only:%(invoke_as)}}}}", 0},
919 {"-",
920 "%{!E:%e-E or -x required when input is from standard input}\
921 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0},
922 {".h", "@c-header", 0},
923 {"@c-header",
924 /* cc1 has an integrated ISO C preprocessor. We should invoke the
925 external preprocessor if -save-temps is given. */
926 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
927 %{!E:%{!M:%{!MM:\
928 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
929 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\
930 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} \
931 %(cc1_options)\
932 -o %g.s %{!o*:--output-pch=%i.gch}\
933 %W{o*:--output-pch=%*}%V}\
934 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
935 cc1 %(cpp_unique_options) %(cc1_options)\
936 -o %g.s %{!o*:--output-pch=%i.gch}\
937 %W{o*:--output-pch=%*}%V}}}}}}", 0},
938 {".i", "@cpp-output", 0},
939 {"@cpp-output",
940 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0},
941 {".s", "@assembler", 0},
942 {"@assembler",
943 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0},
944 {".S", "@assembler-with-cpp", 0},
945 {"@assembler-with-cpp",
946#ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
947 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
948 %{E|M|MM:%(cpp_debug_options)}\
949 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
950 as %(asm_debug) %(asm_options) %|.s %A }}}}"
951#else
952 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
953 %{E|M|MM:%(cpp_debug_options)}\
954 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
955 as %(asm_debug) %(asm_options) %m.s %A }}}}"
956#endif
957 , 0},
958
959#include "specs.h"
960 /* Mark end of table. */
961 {0, 0, 0}
962};
963
964/* Number of elements in default_compilers, not counting the terminator. */
965
966static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
967
968/* A vector of options to give to the linker.
969 These options are accumulated by %x,
970 and substituted into the linker command with %X. */
971static int n_linker_options;
972static char **linker_options;
973
974/* A vector of options to give to the assembler.
975 These options are accumulated by -Wa,
976 and substituted into the assembler command with %Y. */
977static int n_assembler_options;
978static char **assembler_options;
979
980/* A vector of options to give to the preprocessor.
981 These options are accumulated by -Wp,
982 and substituted into the preprocessor command with %Z. */
983static int n_preprocessor_options;
984static char **preprocessor_options;
985
986/* Define how to map long options into short ones. */
987
988/* This structure describes one mapping. */
989struct option_map
990{
991 /* The long option's name. */
992 const char *const name;
993 /* The equivalent short option. */
994 const char *const equivalent;
995 /* Argument info. A string of flag chars; NULL equals no options.
996 a => argument required.
997 o => argument optional.
998 j => join argument to equivalent, making one word.
999 * => require other text after NAME as an argument. */
1000 const char *const arg_info;
1001};
1002
1003/* This is the table of mappings. Mappings are tried sequentially
1004 for each option encountered; the first one that matches, wins. */
1005
1006static const struct option_map option_map[] =
1007 {
1008 {"--all-warnings", "-Wall", 0},
1009 {"--ansi", "-ansi", 0},
1010 {"--assemble", "-S", 0},
1011 {"--assert", "-A", "a"},
1012 {"--classpath", "-fclasspath=", "aj"},
1013 {"--bootclasspath", "-fbootclasspath=", "aj"},
1014 {"--CLASSPATH", "-fclasspath=", "aj"},
1015 {"--comments", "-C", 0},
1016 {"--comments-in-macros", "-CC", 0},
1017 {"--compile", "-c", 0},
1018 {"--debug", "-g", "oj"},
1019 {"--define-macro", "-D", "aj"},
1020 {"--dependencies", "-M", 0},
1021 {"--dump", "-d", "a"},
1022 {"--dumpbase", "-dumpbase", "a"},
1023 {"--entry", "-e", 0},
1024 {"--extra-warnings", "-W", 0},
1025 {"--for-assembler", "-Wa", "a"},
1026 {"--for-linker", "-Xlinker", "a"},
1027 {"--force-link", "-u", "a"},
1028 {"--imacros", "-imacros", "a"},
1029 {"--include", "-include", "a"},
1030 {"--include-barrier", "-I-", 0},
1031 {"--include-directory", "-I", "aj"},
1032 {"--include-directory-after", "-idirafter", "a"},
1033 {"--include-prefix", "-iprefix", "a"},
1034 {"--include-with-prefix", "-iwithprefix", "a"},
1035 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
1036 {"--include-with-prefix-after", "-iwithprefix", "a"},
1037 {"--language", "-x", "a"},
1038 {"--library-directory", "-L", "a"},
1039 {"--machine", "-m", "aj"},
1040 {"--machine-", "-m", "*j"},
1041 {"--no-integrated-cpp", "-no-integrated-cpp", 0},
1042 {"--no-line-commands", "-P", 0},
1043 {"--no-precompiled-includes", "-noprecomp", 0},
1044 {"--no-standard-includes", "-nostdinc", 0},
1045 {"--no-standard-libraries", "-nostdlib", 0},
1046 {"--no-warnings", "-w", 0},
1047 {"--optimize", "-O", "oj"},
1048 {"--output", "-o", "a"},
1049 {"--output-class-directory", "-foutput-class-dir=", "ja"},
1050 {"--param", "--param", "a"},
1051 {"--pedantic", "-pedantic", 0},
1052 {"--pedantic-errors", "-pedantic-errors", 0},
1053 {"--pie", "-pie", 0},
1054 {"--pipe", "-pipe", 0},
1055 {"--prefix", "-B", "a"},
1056 {"--preprocess", "-E", 0},
1057 {"--print-search-dirs", "-print-search-dirs", 0},
1058 {"--print-file-name", "-print-file-name=", "aj"},
1059 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
1060 {"--print-missing-file-dependencies", "-MG", 0},
1061 {"--print-multi-lib", "-print-multi-lib", 0},
1062 {"--print-multi-directory", "-print-multi-directory", 0},
1063 {"--print-multi-os-directory", "-print-multi-os-directory", 0},
1064 {"--print-prog-name", "-print-prog-name=", "aj"},
1065 {"--profile", "-p", 0},
1066 {"--profile-blocks", "-a", 0},
1067 {"--quiet", "-q", 0},
1068 {"--resource", "-fcompile-resource=", "aj"},
1069 {"--save-temps", "-save-temps", 0},
1070 {"--shared", "-shared", 0},
1071 {"--silent", "-q", 0},
1072 {"--specs", "-specs=", "aj"},
1073 {"--static", "-static", 0},
1074 {"--std", "-std=", "aj"},
1075 {"--symbolic", "-symbolic", 0},
1076 {"--time", "-time", 0},
1077 {"--trace-includes", "-H", 0},
1078 {"--traditional", "-traditional", 0},
1079 {"--traditional-cpp", "-traditional-cpp", 0},
1080 {"--trigraphs", "-trigraphs", 0},
1081 {"--undefine-macro", "-U", "aj"},
1082 {"--user-dependencies", "-MM", 0},
1083 {"--verbose", "-v", 0},
1084 {"--warn-", "-W", "*j"},
1085 {"--write-dependencies", "-MD", 0},
1086 {"--write-user-dependencies", "-MMD", 0},
1087 {"--", "-f", "*j"}
1088 };
1089
1090
1091#ifdef TARGET_OPTION_TRANSLATE_TABLE
1092static const struct {
1093 const char *const option_found;
1094 const char *const replacements;
1095} target_option_translations[] =
1096{
1097 TARGET_OPTION_TRANSLATE_TABLE,
1098 { 0, 0 }
1099};
1100#endif
1101
1102/* Translate the options described by *ARGCP and *ARGVP.
1103 Make a new vector and store it back in *ARGVP,
1104 and store its length in *ARGVC. */
1105
1106static void
1107translate_options (int *argcp, const char *const **argvp)
1108{
1109 int i;
1110 int argc = *argcp;
1111 const char *const *argv = *argvp;
1112 int newvsize = (argc + 2) * 2 * sizeof (const char *);
1113 const char **newv = xmalloc (newvsize);
1114 int newindex = 0;
1115
1116 i = 0;
1117 newv[newindex++] = argv[i++];
1118
1119 while (i < argc)
1120 {
1121#ifdef TARGET_OPTION_TRANSLATE_TABLE
1122 int tott_idx;
1123
1124 for (tott_idx = 0;
1125 target_option_translations[tott_idx].option_found;
1126 tott_idx++)
1127 {
1128 if (strcmp (target_option_translations[tott_idx].option_found,
1129 argv[i]) == 0)
1130 {
1131 int spaces = 1;
1132 const char *sp;
1133 char *np;
1134
1135 for (sp = target_option_translations[tott_idx].replacements;
1136 *sp; sp++)
1137 {
1138 if (*sp == ' ')
1139 spaces ++;
1140 }
1141
1142 newvsize += spaces * sizeof (const char *);
1143 newv = xrealloc (newv, newvsize);
1144
1145 sp = target_option_translations[tott_idx].replacements;
1146 np = xstrdup (sp);
1147
1148 while (1)
1149 {
1150 while (*np == ' ')
1151 np++;
1152 if (*np == 0)
1153 break;
1154 newv[newindex++] = np;
1155 while (*np != ' ' && *np)
1156 np++;
1157 if (*np == 0)
1158 break;
1159 *np++ = 0;
1160 }
1161
1162 i ++;
1163 break;
1164 }
1165 }
1166 if (target_option_translations[tott_idx].option_found)
1167 continue;
1168#endif
1169
1170 /* Translate -- options. */
1171 if (argv[i][0] == '-' && argv[i][1] == '-')
1172 {
1173 size_t j;
1174 /* Find a mapping that applies to this option. */
1175 for (j = 0; j < ARRAY_SIZE (option_map); j++)
1176 {
1177 size_t optlen = strlen (option_map[j].name);
1178 size_t arglen = strlen (argv[i]);
1179 size_t complen = arglen > optlen ? optlen : arglen;
1180 const char *arginfo = option_map[j].arg_info;
1181
1182 if (arginfo == 0)
1183 arginfo = "";
1184
1185 if (!strncmp (argv[i], option_map[j].name, complen))
1186 {
1187 const char *arg = 0;
1188
1189 if (arglen < optlen)
1190 {
1191 size_t k;
1192 for (k = j + 1; k < ARRAY_SIZE (option_map); k++)
1193 if (strlen (option_map[k].name) >= arglen
1194 && !strncmp (argv[i], option_map[k].name, arglen))
1195 {
1196 error ("ambiguous abbreviation %s", argv[i]);
1197 break;
1198 }
1199
1200 if (k != ARRAY_SIZE (option_map))
1201 break;
1202 }
1203
1204 if (arglen > optlen)
1205 {
1206 /* If the option has an argument, accept that. */
1207 if (argv[i][optlen] == '=')
1208 arg = argv[i] + optlen + 1;
1209
1210 /* If this mapping requires extra text at end of name,
1211 accept that as "argument". */
1212 else if (strchr (arginfo, '*') != 0)
1213 arg = argv[i] + optlen;
1214
1215 /* Otherwise, extra text at end means mismatch.
1216 Try other mappings. */
1217 else
1218 continue;
1219 }
1220
1221 else if (strchr (arginfo, '*') != 0)
1222 {
1223 error ("incomplete `%s' option", option_map[j].name);
1224 break;
1225 }
1226
1227 /* Handle arguments. */
1228 if (strchr (arginfo, 'a') != 0)
1229 {
1230 if (arg == 0)
1231 {
1232 if (i + 1 == argc)
1233 {
1234 error ("missing argument to `%s' option",
1235 option_map[j].name);
1236 break;
1237 }
1238
1239 arg = argv[++i];
1240 }
1241 }
1242 else if (strchr (arginfo, '*') != 0)
1243 ;
1244 else if (strchr (arginfo, 'o') == 0)
1245 {
1246 if (arg != 0)
1247 error ("extraneous argument to `%s' option",
1248 option_map[j].name);
1249 arg = 0;
1250 }
1251
1252 /* Store the translation as one argv elt or as two. */
1253 if (arg != 0 && strchr (arginfo, 'j') != 0)
1254 newv[newindex++] = concat (option_map[j].equivalent, arg,
1255 NULL);
1256 else if (arg != 0)
1257 {
1258 newv[newindex++] = option_map[j].equivalent;
1259 newv[newindex++] = arg;
1260 }
1261 else
1262 newv[newindex++] = option_map[j].equivalent;
1263
1264 break;
1265 }
1266 }
1267 i++;
1268 }
1269
1270 /* Handle old-fashioned options--just copy them through,
1271 with their arguments. */
1272 else if (argv[i][0] == '-')
1273 {
1274 const char *p = argv[i] + 1;
1275 int c = *p;
1276 int nskip = 1;
1277
1278 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
1279 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
1280 else if (WORD_SWITCH_TAKES_ARG (p))
1281 nskip += WORD_SWITCH_TAKES_ARG (p);
1282 else if ((c == 'B' || c == 'b' || c == 'x')
1283 && p[1] == 0)
1284 nskip += 1;
1285 else if (! strcmp (p, "Xlinker"))
1286 nskip += 1;
1287 else if (! strcmp (p, "Xpreprocessor"))
1288 nskip += 1;
1289 else if (! strcmp (p, "Xassembler"))
1290 nskip += 1;
1291
1292 /* Watch out for an option at the end of the command line that
1293 is missing arguments, and avoid skipping past the end of the
1294 command line. */
1295 if (nskip + i > argc)
1296 nskip = argc - i;
1297
1298 while (nskip > 0)
1299 {
1300 newv[newindex++] = argv[i++];
1301 nskip--;
1302 }
1303 }
1304 else
1305 /* Ordinary operands, or +e options. */
1306 newv[newindex++] = argv[i++];
1307 }
1308
1309 newv[newindex] = 0;
1310
1311 *argvp = newv;
1312 *argcp = newindex;
1313}
1314
1315static char *
1316skip_whitespace (char *p)
1317{
1318 while (1)
1319 {
1320 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1321 be considered whitespace. */
1322 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1323 return p + 1;
1324 else if (*p == '\n' || *p == ' ' || *p == '\t')
1325 p++;
1326 else if (*p == '#')
1327 {
1328 while (*p != '\n')
1329 p++;
1330 p++;
1331 }
1332 else
1333 break;
1334 }
1335
1336 return p;
1337}
1338/* Structures to keep track of prefixes to try when looking for files. */
1339
1340struct prefix_list
1341{
1342 const char *prefix; /* String to prepend to the path. */
1343 struct prefix_list *next; /* Next in linked list. */
1344 int require_machine_suffix; /* Don't use without machine_suffix. */
1345 /* 2 means try both machine_suffix and just_machine_suffix. */
1346 int *used_flag_ptr; /* 1 if a file was found with this prefix. */
1347 int priority; /* Sort key - priority within list. */
1348 int os_multilib; /* 1 if OS multilib scheme should be used,
1349 0 for GCC multilib scheme. */
1350};
1351
1352struct path_prefix
1353{
1354 struct prefix_list *plist; /* List of prefixes to try */
1355 int max_len; /* Max length of a prefix in PLIST */
1356 const char *name; /* Name of this list (used in config stuff) */
1357};
1358
1359/* List of prefixes to try when looking for executables. */
1360
1361static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1362
1363/* List of prefixes to try when looking for startup (crt0) files. */
1364
1365static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1366
1367/* List of prefixes to try when looking for include files. */
1368
1369static struct path_prefix include_prefixes = { 0, 0, "include" };
1370
1371/* Suffix to attach to directories searched for commands.
1372 This looks like `MACHINE/VERSION/'. */
1373
1374static const char *machine_suffix = 0;
1375
1376/* Suffix to attach to directories searched for commands.
1377 This is just `MACHINE/'. */
1378
1379static const char *just_machine_suffix = 0;
1380
1381/* Adjusted value of GCC_EXEC_PREFIX envvar. */
1382
1383static const char *gcc_exec_prefix;
1384
1385/* Adjusted value of standard_libexec_prefix. */
1386
1387static const char *gcc_libexec_prefix;
1388
1389/* Default prefixes to attach to command names. */
1390
1391#ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */
1392#undef MD_EXEC_PREFIX
1393#undef MD_STARTFILE_PREFIX
1394#undef MD_STARTFILE_PREFIX_1
1395#endif
1396
1397/* If no prefixes defined, use the null string, which will disable them. */
1398#ifndef MD_EXEC_PREFIX
1399#define MD_EXEC_PREFIX ""
1400#endif
1401#ifndef MD_STARTFILE_PREFIX
1402#define MD_STARTFILE_PREFIX ""
1403#endif
1404#ifndef MD_STARTFILE_PREFIX_1
1405#define MD_STARTFILE_PREFIX_1 ""
1406#endif
1407
1408static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1409static const char *const standard_exec_prefix_1 = "/usr/libexec/gcc/";
1410static const char *const standard_exec_prefix_2 = "/usr/lib/gcc/";
1411static const char *md_exec_prefix = MD_EXEC_PREFIX;
1412
1413static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1414static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1415static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1416static const char *const standard_startfile_prefix_1 = "/lib/";
1417static const char *const standard_startfile_prefix_2 = "/usr/lib/";
1418
1419static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1420static const char *tooldir_prefix;
1421
1422#ifndef FREEBSD_NATIVE
1423static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1424#endif /* not FREEBSD_NATIVE */
1425
1426static const char *standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1427
1428/* Subdirectory to use for locating libraries. Set by
1429 set_multilib_dir based on the compilation options. */
1430
1431static const char *multilib_dir;
1432
1433/* Subdirectory to use for locating libraries in OS conventions. Set by
1434 set_multilib_dir based on the compilation options. */
1435
1436static const char *multilib_os_dir;
1437
1438/* Structure to keep track of the specs that have been defined so far.
1439 These are accessed using %(specname) or %[specname] in a compiler
1440 or link spec. */
1441
1442struct spec_list
1443{
1444 /* The following 2 fields must be first */
1445 /* to allow EXTRA_SPECS to be initialized */
1446 const char *name; /* name of the spec. */
1447 const char *ptr; /* available ptr if no static pointer */
1448
1449 /* The following fields are not initialized */
1450 /* by EXTRA_SPECS */
1451 const char **ptr_spec; /* pointer to the spec itself. */
1452 struct spec_list *next; /* Next spec in linked list. */
1453 int name_len; /* length of the name */
1454 int alloc_p; /* whether string was allocated */
1455};
1456
1457#define INIT_STATIC_SPEC(NAME,PTR) \
1458{ NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1459
1460/* List of statically defined specs. */
1461static struct spec_list static_specs[] =
1462{
1463 INIT_STATIC_SPEC ("asm", &asm_spec),
1464 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1465 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1466 INIT_STATIC_SPEC ("asm_options", &asm_options),
1467 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1468 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1469 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1470 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1471 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1472 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1473 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1474 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1475 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1476 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1477 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1478 INIT_STATIC_SPEC ("link", &link_spec),
1479 INIT_STATIC_SPEC ("lib", &lib_spec),
1480 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1481 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1482 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces),
1483 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1484 INIT_STATIC_SPEC ("version", &compiler_version),
1485 INIT_STATIC_SPEC ("multilib", &multilib_select),
1486 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1487 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1488 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1489 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1490 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1491 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1492 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1493 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1494 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1495 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1496 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1497 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1498 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1499};
1500
1501#ifdef EXTRA_SPECS /* additional specs needed */
1502/* Structure to keep track of just the first two args of a spec_list.
1503 That is all that the EXTRA_SPECS macro gives us. */
1504struct spec_list_1
1505{
1506 const char *const name;
1507 const char *const ptr;
1508};
1509
1510static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1511static struct spec_list *extra_specs = (struct spec_list *) 0;
1512#endif
1513
1514/* List of dynamically allocates specs that have been defined so far. */
1515
1516static struct spec_list *specs = (struct spec_list *) 0;
1517
1518/* List of static spec functions. */
1519
1520static const struct spec_function static_spec_functions[] =
1521{
1522 { "if-exists", if_exists_spec_function },
1523 { "if-exists-else", if_exists_else_spec_function },
1524 { 0, 0 }
1525};
1526
1527static int processing_spec_function;
1528
1529/* Add appropriate libgcc specs to OBSTACK, taking into account
1530 various permutations of -shared-libgcc, -shared, and such. */
1531
1532#ifdef ENABLE_SHARED_LIBGCC
1533static void
1534init_gcc_specs (struct obstack *obstack, const char *shared_name,
1535 const char *static_name, const char *eh_name)
1536{
1537 char *buf;
1538
1539 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name,
1540 "}%{!static:%{!static-libgcc:",
1541#ifdef HAVE_LD_AS_NEEDED
1542 "%{!shared-libgcc:", static_name,
1543 " --as-needed ", shared_name, " --no-as-needed}"
1544 "%{shared-libgcc:", shared_name, "%{!shared: ", static_name,
1545 "}",
1546#else
1547 "%{!shared:%{!shared-libgcc:", static_name, " ",
1548 eh_name, "}%{shared-libgcc:", shared_name, " ",
1549 static_name, "}}%{shared:",
1550#ifdef LINK_EH_SPEC
1551 "%{shared-libgcc:", shared_name,
1552 "}%{!shared-libgcc:", static_name, "}",
1553#else
1554 shared_name,
1555#endif
1556#endif
1557 "}}}", NULL);
1558
1559 obstack_grow (obstack, buf, strlen (buf));
1560 free (buf);
1561}
1562#endif /* ENABLE_SHARED_LIBGCC */
1563
1564/* Initialize the specs lookup routines. */
1565
1566static void
1567init_spec (void)
1568{
1569 struct spec_list *next = (struct spec_list *) 0;
1570 struct spec_list *sl = (struct spec_list *) 0;
1571 int i;
1572
1573 if (specs)
1574 return; /* Already initialized. */
1575
1576 if (verbose_flag)
1577 notice ("Using built-in specs.\n");
1578
1579#ifdef EXTRA_SPECS
1580 extra_specs = xcalloc (sizeof (struct spec_list),
1581 ARRAY_SIZE (extra_specs_1));
1582
1583 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1584 {
1585 sl = &extra_specs[i];
1586 sl->name = extra_specs_1[i].name;
1587 sl->ptr = extra_specs_1[i].ptr;
1588 sl->next = next;
1589 sl->name_len = strlen (sl->name);
1590 sl->ptr_spec = &sl->ptr;
1591 next = sl;
1592 }
1593#endif
1594
1595 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
1596 on ?: in file-scope variable initializations. */
1597 asm_debug = ASM_DEBUG_SPEC;
1598
1599 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1600 {
1601 sl = &static_specs[i];
1602 sl->next = next;
1603 next = sl;
1604 }
1605
1606#ifdef ENABLE_SHARED_LIBGCC
1607 /* ??? If neither -shared-libgcc nor --static-libgcc was
1608 seen, then we should be making an educated guess. Some proposed
1609 heuristics for ELF include:
1610
1611 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1612 program will be doing dynamic loading, which will likely
1613 need the shared libgcc.
1614
1615 (2) If "-ldl", then it's also a fair bet that we're doing
1616 dynamic loading.
1617
1618 (3) For each ET_DYN we're linking against (either through -lfoo
1619 or /some/path/foo.so), check to see whether it or one of
1620 its dependencies depends on a shared libgcc.
1621
1622 (4) If "-shared"
1623
1624 If the runtime is fixed to look for program headers instead
1625 of calling __register_frame_info at all, for each object,
1626 use the shared libgcc if any EH symbol referenced.
1627
1628 If crtstuff is fixed to not invoke __register_frame_info
1629 automatically, for each object, use the shared libgcc if
1630 any non-empty unwind section found.
1631
1632 Doing any of this probably requires invoking an external program to
1633 do the actual object file scanning. */
1634 {
1635 const char *p = libgcc_spec;
1636 int in_sep = 1;
1637
1638 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1639 when given the proper command line arguments. */
1640 while (*p)
1641 {
1642 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1643 {
1644 init_gcc_specs (&obstack,
1645#ifdef NO_SHARED_LIBGCC_MULTILIB
1646 "-lgcc_s"
1647#else
1648 "-lgcc_s%M"
1649#endif
1650#ifdef USE_LIBUNWIND_EXCEPTIONS
1651 " -lunwind"
1652#endif
1653 ,
1654 "-lgcc",
1655 "-lgcc_eh"
1656#ifdef USE_LIBUNWIND_EXCEPTIONS
1657# ifdef HAVE_LD_STATIC_DYNAMIC
1658 " %{!static:-Bstatic} -lunwind %{!static:-Bdynamic}"
1659# else
1660 " -lunwind"
1661# endif
1662#endif
1663 );
1664
1665 p += 5;
1666 in_sep = 0;
1667 }
1668 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1669 {
1670 /* Ug. We don't know shared library extensions. Hope that
1671 systems that use this form don't do shared libraries. */
1672 init_gcc_specs (&obstack,
1673#ifdef NO_SHARED_LIBGCC_MULTILIB
1674 "-lgcc_s"
1675#else
1676 "-lgcc_s%M"
1677#endif
1678 ,
1679 "libgcc.a%s",
1680 "libgcc_eh.a%s"
1681#ifdef USE_LIBUNWIND_EXCEPTIONS
1682 " -lunwind"
1683#endif
1684 );
1685 p += 10;
1686 in_sep = 0;
1687 }
1688 else
1689 {
1690 obstack_1grow (&obstack, *p);
1691 in_sep = (*p == ' ');
1692 p += 1;
1693 }
1694 }
1695
1696 obstack_1grow (&obstack, '\0');
1697 libgcc_spec = obstack_finish (&obstack);
1698 }
1699#endif
1700#ifdef USE_AS_TRADITIONAL_FORMAT
1701 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1702 {
1703 static const char tf[] = "--traditional-format ";
1704 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1705 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1706 asm_spec = obstack_finish (&obstack);
1707 }
1708#endif
1709#ifdef LINK_EH_SPEC
1710 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1711 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1712 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1713 link_spec = obstack_finish (&obstack);
1714#endif
1715
1716 specs = sl;
1717}
1718
1719/* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1720 removed; If the spec starts with a + then SPEC is added to the end of the
1721 current spec. */
1722
1723static void
1724set_spec (const char *name, const char *spec)
1725{
1726 struct spec_list *sl;
1727 const char *old_spec;
1728 int name_len = strlen (name);
1729 int i;
1730
1731 /* If this is the first call, initialize the statically allocated specs. */
1732 if (!specs)
1733 {
1734 struct spec_list *next = (struct spec_list *) 0;
1735 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1736 {
1737 sl = &static_specs[i];
1738 sl->next = next;
1739 next = sl;
1740 }
1741 specs = sl;
1742 }
1743
1744 /* See if the spec already exists. */
1745 for (sl = specs; sl; sl = sl->next)
1746 if (name_len == sl->name_len && !strcmp (sl->name, name))
1747 break;
1748
1749 if (!sl)
1750 {
1751 /* Not found - make it. */
1752 sl = xmalloc (sizeof (struct spec_list));
1753 sl->name = xstrdup (name);
1754 sl->name_len = name_len;
1755 sl->ptr_spec = &sl->ptr;
1756 sl->alloc_p = 0;
1757 *(sl->ptr_spec) = "";
1758 sl->next = specs;
1759 specs = sl;
1760 }
1761
1762 old_spec = *(sl->ptr_spec);
1763 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1764 ? concat (old_spec, spec + 1, NULL)
1765 : xstrdup (spec));
1766
1767#ifdef DEBUG_SPECS
1768 if (verbose_flag)
1769 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1770#endif
1771
1772 /* Free the old spec. */
1773 if (old_spec && sl->alloc_p)
1774 free ((void *) old_spec);
1775
1776 sl->alloc_p = 1;
1777}
1778
1779/* Accumulate a command (program name and args), and run it. */
1780
1781/* Vector of pointers to arguments in the current line of specifications. */
1782
1783static const char **argbuf;
1784
1785/* Number of elements allocated in argbuf. */
1786
1787static int argbuf_length;
1788
1789/* Number of elements in argbuf currently in use (containing args). */
1790
1791static int argbuf_index;
1792
1793/* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1794 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1795 it here. */
1796
1797static struct temp_name {
1798 const char *suffix; /* suffix associated with the code. */
1799 int length; /* strlen (suffix). */
1800 int unique; /* Indicates whether %g or %u/%U was used. */
1801 const char *filename; /* associated filename. */
1802 int filename_length; /* strlen (filename). */
1803 struct temp_name *next;
1804} *temp_names;
1805
1806/* Number of commands executed so far. */
1807
1808static int execution_count;
1809
1810/* Number of commands that exited with a signal. */
1811
1812static int signal_count;
1813
1814/* Name with which this program was invoked. */
1815
1816static const char *programname;
1817
1818/* Allocate the argument vector. */
1819
1820static void
1821alloc_args (void)
1822{
1823 argbuf_length = 10;
1824 argbuf = xmalloc (argbuf_length * sizeof (const char *));
1825}
1826
1827/* Clear out the vector of arguments (after a command is executed). */
1828
1829static void
1830clear_args (void)
1831{
1832 argbuf_index = 0;
1833}
1834
1835/* Add one argument to the vector at the end.
1836 This is done when a space is seen or at the end of the line.
1837 If DELETE_ALWAYS is nonzero, the arg is a filename
1838 and the file should be deleted eventually.
1839 If DELETE_FAILURE is nonzero, the arg is a filename
1840 and the file should be deleted if this compilation fails. */
1841
1842static void
1843store_arg (const char *arg, int delete_always, int delete_failure)
1844{
1845 if (argbuf_index + 1 == argbuf_length)
1846 argbuf = xrealloc (argbuf, (argbuf_length *= 2) * sizeof (const char *));
1847
1848 argbuf[argbuf_index++] = arg;
1849 argbuf[argbuf_index] = 0;
1850
1851 if (delete_always || delete_failure)
1852 record_temp_file (arg, delete_always, delete_failure);
1853}
1854
1855/* Load specs from a file name named FILENAME, replacing occurrences of
1856 various different types of line-endings, \r\n, \n\r and just \r, with
1857 a single \n. */
1858
1859static char *
1860load_specs (const char *filename)
1861{
1862 int desc;
1863 int readlen;
1864 struct stat statbuf;
1865 char *buffer;
1866 char *buffer_p;
1867 char *specs;
1868 char *specs_p;
1869
1870 if (verbose_flag)
1871 notice ("Reading specs from %s\n", filename);
1872
1873 /* Open and stat the file. */
1874 desc = open (filename, O_RDONLY, 0);
1875 if (desc < 0)
1876 pfatal_with_name (filename);
1877 if (stat (filename, &statbuf) < 0)
1878 pfatal_with_name (filename);
1879
1880 /* Read contents of file into BUFFER. */
1881 buffer = xmalloc ((unsigned) statbuf.st_size + 1);
1882 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1883 if (readlen < 0)
1884 pfatal_with_name (filename);
1885 buffer[readlen] = 0;
1886 close (desc);
1887
1888 specs = xmalloc (readlen + 1);
1889 specs_p = specs;
1890 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1891 {
1892 int skip = 0;
1893 char c = *buffer_p;
1894 if (c == '\r')
1895 {
1896 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1897 skip = 1;
1898 else if (*(buffer_p + 1) == '\n') /* \r\n */
1899 skip = 1;
1900 else /* \r */
1901 c = '\n';
1902 }
1903 if (! skip)
1904 *specs_p++ = c;
1905 }
1906 *specs_p = '\0';
1907
1908 free (buffer);
1909 return (specs);
1910}
1911
1912/* Read compilation specs from a file named FILENAME,
1913 replacing the default ones.
1914
1915 A suffix which starts with `*' is a definition for
1916 one of the machine-specific sub-specs. The "suffix" should be
1917 *asm, *cc1, *cpp, *link, *startfile, etc.
1918 The corresponding spec is stored in asm_spec, etc.,
1919 rather than in the `compilers' vector.
1920
1921 Anything invalid in the file is a fatal error. */
1922
1923static void
1924read_specs (const char *filename, int main_p)
1925{
1926 char *buffer;
1927 char *p;
1928
1929 buffer = load_specs (filename);
1930
1931 /* Scan BUFFER for specs, putting them in the vector. */
1932 p = buffer;
1933 while (1)
1934 {
1935 char *suffix;
1936 char *spec;
1937 char *in, *out, *p1, *p2, *p3;
1938
1939 /* Advance P in BUFFER to the next nonblank nocomment line. */
1940 p = skip_whitespace (p);
1941 if (*p == 0)
1942 break;
1943
1944 /* Is this a special command that starts with '%'? */
1945 /* Don't allow this for the main specs file, since it would
1946 encourage people to overwrite it. */
1947 if (*p == '%' && !main_p)
1948 {
1949 p1 = p;
1950 while (*p && *p != '\n')
1951 p++;
1952
1953 /* Skip '\n'. */
1954 p++;
1955
1956 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1957 && (p1[sizeof "%include" - 1] == ' '
1958 || p1[sizeof "%include" - 1] == '\t'))
1959 {
1960 char *new_filename;
1961
1962 p1 += sizeof ("%include");
1963 while (*p1 == ' ' || *p1 == '\t')
1964 p1++;
1965
1966 if (*p1++ != '<' || p[-2] != '>')
1967 fatal ("specs %%include syntax malformed after %ld characters",
1968 (long) (p1 - buffer + 1));
1969
1970 p[-2] = '\0';
1971 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, 0);
1972 read_specs (new_filename ? new_filename : p1, FALSE);
1973 continue;
1974 }
1975 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1976 && (p1[sizeof "%include_noerr" - 1] == ' '
1977 || p1[sizeof "%include_noerr" - 1] == '\t'))
1978 {
1979 char *new_filename;
1980
1981 p1 += sizeof "%include_noerr";
1982 while (*p1 == ' ' || *p1 == '\t')
1983 p1++;
1984
1985 if (*p1++ != '<' || p[-2] != '>')
1986 fatal ("specs %%include syntax malformed after %ld characters",
1987 (long) (p1 - buffer + 1));
1988
1989 p[-2] = '\0';
1990 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, 0);
1991 if (new_filename)
1992 read_specs (new_filename, FALSE);
1993 else if (verbose_flag)
1994 notice ("could not find specs file %s\n", p1);
1995 continue;
1996 }
1997 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1998 && (p1[sizeof "%rename" - 1] == ' '
1999 || p1[sizeof "%rename" - 1] == '\t'))
2000 {
2001 int name_len;
2002 struct spec_list *sl;
2003 struct spec_list *newsl;
2004
2005 /* Get original name. */
2006 p1 += sizeof "%rename";
2007 while (*p1 == ' ' || *p1 == '\t')
2008 p1++;
2009
2010 if (! ISALPHA ((unsigned char) *p1))
2011 fatal ("specs %%rename syntax malformed after %ld characters",
2012 (long) (p1 - buffer));
2013
2014 p2 = p1;
2015 while (*p2 && !ISSPACE ((unsigned char) *p2))
2016 p2++;
2017
2018 if (*p2 != ' ' && *p2 != '\t')
2019 fatal ("specs %%rename syntax malformed after %ld characters",
2020 (long) (p2 - buffer));
2021
2022 name_len = p2 - p1;
2023 *p2++ = '\0';
2024 while (*p2 == ' ' || *p2 == '\t')
2025 p2++;
2026
2027 if (! ISALPHA ((unsigned char) *p2))
2028 fatal ("specs %%rename syntax malformed after %ld characters",
2029 (long) (p2 - buffer));
2030
2031 /* Get new spec name. */
2032 p3 = p2;
2033 while (*p3 && !ISSPACE ((unsigned char) *p3))
2034 p3++;
2035
2036 if (p3 != p - 1)
2037 fatal ("specs %%rename syntax malformed after %ld characters",
2038 (long) (p3 - buffer));
2039 *p3 = '\0';
2040
2041 for (sl = specs; sl; sl = sl->next)
2042 if (name_len == sl->name_len && !strcmp (sl->name, p1))
2043 break;
2044
2045 if (!sl)
2046 fatal ("specs %s spec was not found to be renamed", p1);
2047
2048 if (strcmp (p1, p2) == 0)
2049 continue;
2050
2051 for (newsl = specs; newsl; newsl = newsl->next)
2052 if (strcmp (newsl->name, p2) == 0)
2053 fatal ("%s: attempt to rename spec '%s' to already defined spec '%s'",
2054 filename, p1, p2);
2055
2056 if (verbose_flag)
2057 {
2058 notice ("rename spec %s to %s\n", p1, p2);
2059#ifdef DEBUG_SPECS
2060 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
2061#endif
2062 }
2063
2064 set_spec (p2, *(sl->ptr_spec));
2065 if (sl->alloc_p)
2066 free ((void *) *(sl->ptr_spec));
2067
2068 *(sl->ptr_spec) = "";
2069 sl->alloc_p = 0;
2070 continue;
2071 }
2072 else
2073 fatal ("specs unknown %% command after %ld characters",
2074 (long) (p1 - buffer));
2075 }
2076
2077 /* Find the colon that should end the suffix. */
2078 p1 = p;
2079 while (*p1 && *p1 != ':' && *p1 != '\n')
2080 p1++;
2081
2082 /* The colon shouldn't be missing. */
2083 if (*p1 != ':')
2084 fatal ("specs file malformed after %ld characters",
2085 (long) (p1 - buffer));
2086
2087 /* Skip back over trailing whitespace. */
2088 p2 = p1;
2089 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
2090 p2--;
2091
2092 /* Copy the suffix to a string. */
2093 suffix = save_string (p, p2 - p);
2094 /* Find the next line. */
2095 p = skip_whitespace (p1 + 1);
2096 if (p[1] == 0)
2097 fatal ("specs file malformed after %ld characters",
2098 (long) (p - buffer));
2099
2100 p1 = p;
2101 /* Find next blank line or end of string. */
2102 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
2103 p1++;
2104
2105 /* Specs end at the blank line and do not include the newline. */
2106 spec = save_string (p, p1 - p);
2107 p = p1;
2108
2109 /* Delete backslash-newline sequences from the spec. */
2110 in = spec;
2111 out = spec;
2112 while (*in != 0)
2113 {
2114 if (in[0] == '\\' && in[1] == '\n')
2115 in += 2;
2116 else if (in[0] == '#')
2117 while (*in && *in != '\n')
2118 in++;
2119
2120 else
2121 *out++ = *in++;
2122 }
2123 *out = 0;
2124
2125 if (suffix[0] == '*')
2126 {
2127 if (! strcmp (suffix, "*link_command"))
2128 link_command_spec = spec;
2129 else
2130 set_spec (suffix + 1, spec);
2131 }
2132 else
2133 {
2134 /* Add this pair to the vector. */
2135 compilers
2136 = xrealloc (compilers,
2137 (n_compilers + 2) * sizeof (struct compiler));
2138
2139 compilers[n_compilers].suffix = suffix;
2140 compilers[n_compilers].spec = spec;
2141 n_compilers++;
2142 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2143 }
2144
2145 if (*suffix == 0)
2146 link_command_spec = spec;
2147 }
2148
2149 if (link_command_spec == 0)
2150 fatal ("spec file has no spec for linking");
2151}
2152
2153/* Record the names of temporary files we tell compilers to write,
2154 and delete them at the end of the run. */
2155
2156/* This is the common prefix we use to make temp file names.
2157 It is chosen once for each run of this program.
2158 It is substituted into a spec by %g or %j.
2159 Thus, all temp file names contain this prefix.
2160 In practice, all temp file names start with this prefix.
2161
2162 This prefix comes from the envvar TMPDIR if it is defined;
2163 otherwise, from the P_tmpdir macro if that is defined;
2164 otherwise, in /usr/tmp or /tmp;
2165 or finally the current directory if all else fails. */
2166
2167static const char *temp_filename;
2168
2169/* Length of the prefix. */
2170
2171static int temp_filename_length;
2172
2173/* Define the list of temporary files to delete. */
2174
2175struct temp_file
2176{
2177 const char *name;
2178 struct temp_file *next;
2179};
2180
2181/* Queue of files to delete on success or failure of compilation. */
2182static struct temp_file *always_delete_queue;
2183/* Queue of files to delete on failure of compilation. */
2184static struct temp_file *failure_delete_queue;
2185
2186/* Record FILENAME as a file to be deleted automatically.
2187 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2188 otherwise delete it in any case.
2189 FAIL_DELETE nonzero means delete it if a compilation step fails;
2190 otherwise delete it in any case. */
2191
2192void
2193record_temp_file (const char *filename, int always_delete, int fail_delete)
2194{
2195 char *const name = xstrdup (filename);
2196
2197 if (always_delete)
2198 {
2199 struct temp_file *temp;
2200 for (temp = always_delete_queue; temp; temp = temp->next)
2201 if (! strcmp (name, temp->name))
2202 goto already1;
2203
2204 temp = xmalloc (sizeof (struct temp_file));
2205 temp->next = always_delete_queue;
2206 temp->name = name;
2207 always_delete_queue = temp;
2208
2209 already1:;
2210 }
2211
2212 if (fail_delete)
2213 {
2214 struct temp_file *temp;
2215 for (temp = failure_delete_queue; temp; temp = temp->next)
2216 if (! strcmp (name, temp->name))
2217 goto already2;
2218
2219 temp = xmalloc (sizeof (struct temp_file));
2220 temp->next = failure_delete_queue;
2221 temp->name = name;
2222 failure_delete_queue = temp;
2223
2224 already2:;
2225 }
2226}
2227
2228/* Delete all the temporary files whose names we previously recorded. */
2229
2230static void
2231delete_if_ordinary (const char *name)
2232{
2233 struct stat st;
2234#ifdef DEBUG
2235 int i, c;
2236
2237 printf ("Delete %s? (y or n) ", name);
2238 fflush (stdout);
2239 i = getchar ();
2240 if (i != '\n')
2241 while ((c = getchar ()) != '\n' && c != EOF)
2242 ;
2243
2244 if (i == 'y' || i == 'Y')
2245#endif /* DEBUG */
2246 if (stat (name, &st) >= 0 && S_ISREG (st.st_mode))
2247 if (unlink (name) < 0)
2248 if (verbose_flag)
2249 perror_with_name (name);
2250}
2251
2252static void
2253delete_temp_files (void)
2254{
2255 struct temp_file *temp;
2256
2257 for (temp = always_delete_queue; temp; temp = temp->next)
2258 delete_if_ordinary (temp->name);
2259 always_delete_queue = 0;
2260}
2261
2262/* Delete all the files to be deleted on error. */
2263
2264static void
2265delete_failure_queue (void)
2266{
2267 struct temp_file *temp;
2268
2269 for (temp = failure_delete_queue; temp; temp = temp->next)
2270 delete_if_ordinary (temp->name);
2271}
2272
2273static void
2274clear_failure_queue (void)
2275{
2276 failure_delete_queue = 0;
2277}
2278
2279/* Build a list of search directories from PATHS.
2280 PREFIX is a string to prepend to the list.
2281 If CHECK_DIR_P is nonzero we ensure the directory exists.
2282 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2283 It is also used by the --print-search-dirs flag. */
2284
2285static char *
2286build_search_list (struct path_prefix *paths, const char *prefix,
2287 int check_dir_p)
2288{
2289 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0;
2290 int just_suffix_len
2291 = (just_machine_suffix) ? strlen (just_machine_suffix) : 0;
2292 int first_time = TRUE;
2293 struct prefix_list *pprefix;
2294
2295 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2296 obstack_1grow (&collect_obstack, '=');
2297
2298 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next)
2299 {
2300 int len = strlen (pprefix->prefix);
2301
2302 if (machine_suffix
2303 && (! check_dir_p
2304 || is_directory (pprefix->prefix, machine_suffix, 0)))
2305 {
2306 if (!first_time)
2307 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2308
2309 first_time = FALSE;
2310 obstack_grow (&collect_obstack, pprefix->prefix, len);
2311 obstack_grow (&collect_obstack, machine_suffix, suffix_len);
2312 }
2313
2314 if (just_machine_suffix
2315 && pprefix->require_machine_suffix == 2
2316 && (! check_dir_p
2317 || is_directory (pprefix->prefix, just_machine_suffix, 0)))
2318 {
2319 if (! first_time)
2320 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2321
2322 first_time = FALSE;
2323 obstack_grow (&collect_obstack, pprefix->prefix, len);
2324 obstack_grow (&collect_obstack, just_machine_suffix,
2325 just_suffix_len);
2326 }
2327
2328 if (! pprefix->require_machine_suffix)
2329 {
2330 if (! first_time)
2331 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2332
2333 first_time = FALSE;
2334 obstack_grow (&collect_obstack, pprefix->prefix, len);
2335 }
2336 }
2337
2338 obstack_1grow (&collect_obstack, '\0');
2339 return obstack_finish (&collect_obstack);
2340}
2341
2342/* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2343 for collect. */
2344
2345static void
2346putenv_from_prefixes (struct path_prefix *paths, const char *env_var)
2347{
2348 putenv (build_search_list (paths, env_var, 1));
2349}
2350
2351/* Check whether NAME can be accessed in MODE. This is like access,
2352 except that it never considers directories to be executable. */
2353
2354static int
2355access_check (const char *name, int mode)
2356{
2357 if (mode == X_OK)
2358 {
2359 struct stat st;
2360
2361 if (stat (name, &st) < 0
2362 || S_ISDIR (st.st_mode))
2363 return -1;
2364 }
2365
2366 return access (name, mode);
2367}
2368
2369/* Search for NAME using the prefix list PREFIXES. MODE is passed to
2370 access to check permissions.
2371 Return 0 if not found, otherwise return its name, allocated with malloc. */
2372
2373static char *
2374find_a_file (struct path_prefix *pprefix, const char *name, int mode,
2375 int multilib)
2376{
2377 char *temp;
2378 const char *const file_suffix =
2379 ((mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "");
2380 struct prefix_list *pl;
2381 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1;
2382 const char *multilib_name, *multilib_os_name;
2383
2384#ifdef DEFAULT_ASSEMBLER
2385 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2386 return xstrdup (DEFAULT_ASSEMBLER);
2387#endif
2388
2389#ifdef DEFAULT_LINKER
2390 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2391 return xstrdup (DEFAULT_LINKER);
2392#endif
2393
2394 if (machine_suffix)
2395 len += strlen (machine_suffix);
2396
2397 multilib_name = name;
2398 multilib_os_name = name;
2399 if (multilib && multilib_os_dir)
2400 {
2401 int len1 = multilib_dir ? strlen (multilib_dir) + 1 : 0;
2402 int len2 = strlen (multilib_os_dir) + 1;
2403
2404 len += len1 > len2 ? len1 : len2;
2405 if (multilib_dir)
2406 multilib_name = ACONCAT ((multilib_dir, dir_separator_str, name,
2407 NULL));
2408 if (strcmp (multilib_os_dir, ".") != 0)
2409 multilib_os_name = ACONCAT ((multilib_os_dir, dir_separator_str, name,
2410 NULL));
2411 }
2412
2413 temp = xmalloc (len);
2414
2415 /* Determine the filename to execute (special case for absolute paths). */
2416
2417 if (IS_ABSOLUTE_PATH (name))
2418 {
2419 if (access (name, mode) == 0)
2420 {
2421 strcpy (temp, name);
2422 return temp;
2423 }
2424 }
2425 else
2426 for (pl = pprefix->plist; pl; pl = pl->next)
2427 {
2428 const char *this_name
2429 = pl->os_multilib ? multilib_os_name : multilib_name;
2430
2431 if (machine_suffix)
2432 {
2433 /* Some systems have a suffix for executable files.
2434 So try appending that first. */
2435 if (file_suffix[0] != 0)
2436 {
2437 strcpy (temp, pl->prefix);
2438 strcat (temp, machine_suffix);
2439 strcat (temp, multilib_name);
2440 strcat (temp, file_suffix);
2441 if (access_check (temp, mode) == 0)
2442 {
2443 if (pl->used_flag_ptr != 0)
2444 *pl->used_flag_ptr = 1;
2445 return temp;
2446 }
2447 }
2448
2449 /* Now try just the multilib_name. */
2450 strcpy (temp, pl->prefix);
2451 strcat (temp, machine_suffix);
2452 strcat (temp, multilib_name);
2453 if (access_check (temp, mode) == 0)
2454 {
2455 if (pl->used_flag_ptr != 0)
2456 *pl->used_flag_ptr = 1;
2457 return temp;
2458 }
2459 }
2460
2461 /* Certain prefixes are tried with just the machine type,
2462 not the version. This is used for finding as, ld, etc. */
2463 if (just_machine_suffix && pl->require_machine_suffix == 2)
2464 {
2465 /* Some systems have a suffix for executable files.
2466 So try appending that first. */
2467 if (file_suffix[0] != 0)
2468 {
2469 strcpy (temp, pl->prefix);
2470 strcat (temp, just_machine_suffix);
2471 strcat (temp, multilib_name);
2472 strcat (temp, file_suffix);
2473 if (access_check (temp, mode) == 0)
2474 {
2475 if (pl->used_flag_ptr != 0)
2476 *pl->used_flag_ptr = 1;
2477 return temp;
2478 }
2479 }
2480
2481 strcpy (temp, pl->prefix);
2482 strcat (temp, just_machine_suffix);
2483 strcat (temp, multilib_name);
2484 if (access_check (temp, mode) == 0)
2485 {
2486 if (pl->used_flag_ptr != 0)
2487 *pl->used_flag_ptr = 1;
2488 return temp;
2489 }
2490 }
2491
2492 /* Certain prefixes can't be used without the machine suffix
2493 when the machine or version is explicitly specified. */
2494 if (! pl->require_machine_suffix)
2495 {
2496 /* Some systems have a suffix for executable files.
2497 So try appending that first. */
2498 if (file_suffix[0] != 0)
2499 {
2500 strcpy (temp, pl->prefix);
2501 strcat (temp, this_name);
2502 strcat (temp, file_suffix);
2503 if (access_check (temp, mode) == 0)
2504 {
2505 if (pl->used_flag_ptr != 0)
2506 *pl->used_flag_ptr = 1;
2507 return temp;
2508 }
2509 }
2510
2511 strcpy (temp, pl->prefix);
2512 strcat (temp, this_name);
2513 if (access_check (temp, mode) == 0)
2514 {
2515 if (pl->used_flag_ptr != 0)
2516 *pl->used_flag_ptr = 1;
2517 return temp;
2518 }
2519 }
2520 }
2521
2522 free (temp);
2523 return 0;
2524}
2525
2526/* Ranking of prefixes in the sort list. -B prefixes are put before
2527 all others. */
2528
2529enum path_prefix_priority
2530{
2531 PREFIX_PRIORITY_B_OPT,
2532 PREFIX_PRIORITY_LAST
2533};
2534
2535/* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2536 order according to PRIORITY. Within each PRIORITY, new entries are
2537 appended.
2538
2539 If WARN is nonzero, we will warn if no file is found
2540 through this prefix. WARN should point to an int
2541 which will be set to 1 if this entry is used.
2542
2543 COMPONENT is the value to be passed to update_path.
2544
2545 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2546 the complete value of machine_suffix.
2547 2 means try both machine_suffix and just_machine_suffix. */
2548
2549static void
2550add_prefix (struct path_prefix *pprefix, const char *prefix,
2551 const char *component, /* enum prefix_priority */ int priority,
2552 int require_machine_suffix, int *warn, int os_multilib)
2553{
2554 struct prefix_list *pl, **prev;
2555 int len;
2556
2557 for (prev = &pprefix->plist;
2558 (*prev) != NULL && (*prev)->priority <= priority;
2559 prev = &(*prev)->next)
2560 ;
2561
2562 /* Keep track of the longest prefix. */
2563
2564 prefix = update_path (prefix, component);
2565 len = strlen (prefix);
2566 if (len > pprefix->max_len)
2567 pprefix->max_len = len;
2568
2569 pl = xmalloc (sizeof (struct prefix_list));
2570 pl->prefix = prefix;
2571 pl->require_machine_suffix = require_machine_suffix;
2572 pl->used_flag_ptr = warn;
2573 pl->priority = priority;
2574 pl->os_multilib = os_multilib;
2575 if (warn)
2576 *warn = 0;
2577
2578 /* Insert after PREV. */
2579 pl->next = (*prev);
2580 (*prev) = pl;
2581}
2582
2583/* Same as add_prefix, but prepending target_system_root to prefix. */
2584static void
2585add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2586 const char *component,
2587 /* enum prefix_priority */ int priority,
2588 int require_machine_suffix, int *warn, int os_multilib)
2589{
2590 if (!IS_ABSOLUTE_PATH (prefix))
2591 abort ();
2592
2593 if (target_system_root)
2594 {
2595 if (target_sysroot_suffix)
2596 prefix = concat (target_sysroot_suffix, prefix, NULL);
2597 prefix = concat (target_system_root, prefix, NULL);
2598
2599 /* We have to override this because GCC's notion of sysroot
2600 moves along with GCC. */
2601 component = "GCC";
2602 }
2603
2604 add_prefix (pprefix, prefix, component, priority,
2605 require_machine_suffix, warn, os_multilib);
2606}
2607
2608/* Execute the command specified by the arguments on the current line of spec.
2609 When using pipes, this includes several piped-together commands
2610 with `|' between them.
2611
2612 Return 0 if successful, -1 if failed. */
2613
2614static int
2615execute (void)
2616{
2617 int i;
2618 int n_commands; /* # of command. */
2619 char *string;
2620 struct command
2621 {
2622 const char *prog; /* program name. */
2623 const char **argv; /* vector of args. */
2624 int pid; /* pid of process for this command. */
2625 };
2626
2627 struct command *commands; /* each command buffer with above info. */
2628
2629 if (processing_spec_function)
2630 abort ();
2631
2632 /* Count # of piped commands. */
2633 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2634 if (strcmp (argbuf[i], "|") == 0)
2635 n_commands++;
2636
2637 /* Get storage for each command. */
2638 commands = alloca (n_commands * sizeof (struct command));
2639
2640 /* Split argbuf into its separate piped processes,
2641 and record info about each one.
2642 Also search for the programs that are to be run. */
2643
2644 commands[0].prog = argbuf[0]; /* first command. */
2645 commands[0].argv = &argbuf[0];
2646 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, 0);
2647
2648 if (string)
2649 commands[0].argv[0] = string;
2650
2651 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2652 if (strcmp (argbuf[i], "|") == 0)
2653 { /* each command. */
2654#if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2655 fatal ("-pipe not supported");
2656#endif
2657 argbuf[i] = 0; /* termination of command args. */
2658 commands[n_commands].prog = argbuf[i + 1];
2659 commands[n_commands].argv = &argbuf[i + 1];
2660 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2661 X_OK, 0);
2662 if (string)
2663 commands[n_commands].argv[0] = string;
2664 n_commands++;
2665 }
2666
2667 argbuf[argbuf_index] = 0;
2668
2669 /* If -v, print what we are about to do, and maybe query. */
2670
2671 if (verbose_flag)
2672 {
2673 /* For help listings, put a blank line between sub-processes. */
2674 if (print_help_list)
2675 fputc ('\n', stderr);
2676
2677 /* Print each piped command as a separate line. */
2678 for (i = 0; i < n_commands; i++)
2679 {
2680 const char *const *j;
2681
2682 if (verbose_only_flag)
2683 {
2684 for (j = commands[i].argv; *j; j++)
2685 {
2686 const char *p;
2687 fprintf (stderr, " \"");
2688 for (p = *j; *p; ++p)
2689 {
2690 if (*p == '"' || *p == '\\' || *p == '$')
2691 fputc ('\\', stderr);
2692 fputc (*p, stderr);
2693 }
2694 fputc ('"', stderr);
2695 }
2696 }
2697 else
2698 for (j = commands[i].argv; *j; j++)
2699 fprintf (stderr, " %s", *j);
2700
2701 /* Print a pipe symbol after all but the last command. */
2702 if (i + 1 != n_commands)
2703 fprintf (stderr, " |");
2704 fprintf (stderr, "\n");
2705 }
2706 fflush (stderr);
2707 if (verbose_only_flag != 0)
2708 {
2709 /* verbose_only_flag should act as if the spec was
2710 executed, so increment execution_count before
2711 returning. This prevents spurious warnings about
2712 unused linker input files, etc. */
2713 execution_count++;
2714 return 0;
2715 }
2716#ifdef DEBUG
2717 notice ("\nGo ahead? (y or n) ");
2718 fflush (stderr);
2719 i = getchar ();
2720 if (i != '\n')
2721 while (getchar () != '\n')
2722 ;
2723
2724 if (i != 'y' && i != 'Y')
2725 return 0;
2726#endif /* DEBUG */
2727 }
2728
2729#ifdef ENABLE_VALGRIND_CHECKING
2730 /* Run the each command through valgrind. To simplify prepending the
2731 path to valgrind and the option "-q" (for quiet operation unless
2732 something triggers), we allocate a separate argv array. */
2733
2734 for (i = 0; i < n_commands; i++)
2735 {
2736 const char **argv;
2737 int argc;
2738 int j;
2739
2740 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2741 ;
2742
2743 argv = alloca ((argc + 3) * sizeof (char *));
2744
2745 argv[0] = VALGRIND_PATH;
2746 argv[1] = "-q";
2747 for (j = 2; j < argc + 2; j++)
2748 argv[j] = commands[i].argv[j - 2];
2749 argv[j] = NULL;
2750
2751 commands[i].argv = argv;
2752 commands[i].prog = argv[0];
2753 }
2754#endif
2755
2756 /* Run each piped subprocess. */
2757
2758 for (i = 0; i < n_commands; i++)
2759 {
2760 char *errmsg_fmt, *errmsg_arg;
2761 const char *string = commands[i].argv[0];
2762
2763 /* For some bizarre reason, the second argument of execvp() is
2764 char *const *, not const char *const *. */
2765 commands[i].pid = pexecute (string, (char *const *) commands[i].argv,
2766 programname, temp_filename,
2767 &errmsg_fmt, &errmsg_arg,
2768 ((i == 0 ? PEXECUTE_FIRST : 0)
2769 | (i + 1 == n_commands ? PEXECUTE_LAST : 0)
2770 | (string == commands[i].prog
2771 ? PEXECUTE_SEARCH : 0)
2772 | (verbose_flag ? PEXECUTE_VERBOSE : 0)));
2773
2774 if (commands[i].pid == -1)
2775 pfatal_pexecute (errmsg_fmt, errmsg_arg);
2776
2777 if (string != commands[i].prog)
2778 free ((void *) string);
2779 }
2780
2781 execution_count++;
2782
2783 /* Wait for all the subprocesses to finish.
2784 We don't care what order they finish in;
2785 we know that N_COMMANDS waits will get them all.
2786 Ignore subprocesses that we don't know about,
2787 since they can be spawned by the process that exec'ed us. */
2788
2789 {
2790 int ret_code = 0;
2791#ifdef HAVE_GETRUSAGE
2792 struct timeval d;
2793 double ut = 0.0, st = 0.0;
2794#endif
2795
2796 for (i = 0; i < n_commands;)
2797 {
2798 int j;
2799 int status;
2800 int pid;
2801
2802 pid = pwait (commands[i].pid, &status, 0);
2803 if (pid < 0)
2804 abort ();
2805
2806#ifdef HAVE_GETRUSAGE
2807 if (report_times)
2808 {
2809 /* getrusage returns the total resource usage of all children
2810 up to now. Copy the previous values into prus, get the
2811 current statistics, then take the difference. */
2812
2813 prus = rus;
2814 getrusage (RUSAGE_CHILDREN, &rus);
2815 d.tv_sec = rus.ru_utime.tv_sec - prus.ru_utime.tv_sec;
2816 d.tv_usec = rus.ru_utime.tv_usec - prus.ru_utime.tv_usec;
2817 ut = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2818
2819 d.tv_sec = rus.ru_stime.tv_sec - prus.ru_stime.tv_sec;
2820 d.tv_usec = rus.ru_stime.tv_usec - prus.ru_stime.tv_usec;
2821 st = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2822 }
2823#endif
2824
2825 for (j = 0; j < n_commands; j++)
2826 if (commands[j].pid == pid)
2827 {
2828 i++;
2829 if (WIFSIGNALED (status))
2830 {
2831#ifdef SIGPIPE
2832 /* SIGPIPE is a special case. It happens in -pipe mode
2833 when the compiler dies before the preprocessor is
2834 done, or the assembler dies before the compiler is
2835 done. There's generally been an error already, and
2836 this is just fallout. So don't generate another error
2837 unless we would otherwise have succeeded. */
2838 if (WTERMSIG (status) == SIGPIPE
2839 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2840 ;
2841 else
2842#endif
2843 fatal ("\
2844Internal error: %s (program %s)\n\
2845Please submit a full bug report.\n\
2846See %s for instructions.",
2847 strsignal (WTERMSIG (status)), commands[j].prog,
2848 bug_report_url);
2849 signal_count++;
2850 ret_code = -1;
2851 }
2852 else if (WIFEXITED (status)
2853 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2854 {
2855 if (WEXITSTATUS (status) > greatest_status)
2856 greatest_status = WEXITSTATUS (status);
2857 ret_code = -1;
2858 }
2859#ifdef HAVE_GETRUSAGE
2860 if (report_times && ut + st != 0)
2861 notice ("# %s %.2f %.2f\n", commands[j].prog, ut, st);
2862#endif
2863 break;
2864 }
2865 }
2866 return ret_code;
2867 }
2868}
2869
2870/* Find all the switches given to us
2871 and make a vector describing them.
2872 The elements of the vector are strings, one per switch given.
2873 If a switch uses following arguments, then the `part1' field
2874 is the switch itself and the `args' field
2875 is a null-terminated vector containing the following arguments.
2876 The `live_cond' field is:
2877 0 when initialized
2878 1 if the switch is true in a conditional spec,
2879 -1 if false (overridden by a later switch)
2880 -2 if this switch should be ignored (used in %<S)
2881 The `validated' field is nonzero if any spec has looked at this switch;
2882 if it remains zero at the end of the run, it must be meaningless. */
2883
2884#define SWITCH_OK 0
2885#define SWITCH_FALSE -1
2886#define SWITCH_IGNORE -2
2887#define SWITCH_LIVE 1
2888
2889struct switchstr
2890{
2891 const char *part1;
2892 const char **args;
2893 int live_cond;
2894 unsigned char validated;
2895 unsigned char ordering;
2896};
2897
2898static struct switchstr *switches;
2899
2900static int n_switches;
2901
2902struct infile
2903{
2904 const char *name;
2905 const char *language;
2906};
2907
2908/* Also a vector of input files specified. */
2909
2910static struct infile *infiles;
2911
2912int n_infiles;
2913
2914/* True if multiple input files are being compiled to a single
2915 assembly file. */
2916
2917static bool combine_inputs;
2918
2919/* This counts the number of libraries added by lang_specific_driver, so that
2920 we can tell if there were any user supplied any files or libraries. */
2921
2922static int added_libraries;
2923
2924/* And a vector of corresponding output files is made up later. */
2925
2926const char **outfiles;
2927
2928/* Used to track if none of the -B paths are used. */
2929static int warn_B;
2930
2931/* Gives value to pass as "warn" to add_prefix for standard prefixes. */
2932static int *warn_std_ptr = 0;
2933
2934#if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2935
2936/* Convert NAME to a new name if it is the standard suffix. DO_EXE
2937 is true if we should look for an executable suffix. DO_OBJ
2938 is true if we should look for an object suffix. */
2939
2940static const char *
2941convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
2942 int do_obj ATTRIBUTE_UNUSED)
2943{
2944#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2945 int i;
2946#endif
2947 int len;
2948
2949 if (name == NULL)
2950 return NULL;
2951
2952 len = strlen (name);
2953
2954#ifdef HAVE_TARGET_OBJECT_SUFFIX
2955 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2956 if (do_obj && len > 2
2957 && name[len - 2] == '.'
2958 && name[len - 1] == 'o')
2959 {
2960 obstack_grow (&obstack, name, len - 2);
2961 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2962 name = obstack_finish (&obstack);
2963 }
2964#endif
2965
2966#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2967 /* If there is no filetype, make it the executable suffix (which includes
2968 the "."). But don't get confused if we have just "-o". */
2969 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
2970 return name;
2971
2972 for (i = len - 1; i >= 0; i--)
2973 if (IS_DIR_SEPARATOR (name[i]))
2974 break;
2975
2976 for (i++; i < len; i++)
2977 if (name[i] == '.')
2978 return name;
2979
2980 obstack_grow (&obstack, name, len);
2981 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
2982 strlen (TARGET_EXECUTABLE_SUFFIX));
2983 name = obstack_finish (&obstack);
2984#endif
2985
2986 return name;
2987}
2988#endif
2989
2990/* Display the command line switches accepted by gcc. */
2991static void
2992display_help (void)
2993{
2994 printf (_("Usage: %s [options] file...\n"), programname);
2995 fputs (_("Options:\n"), stdout);
2996
2997 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
2998 fputs (_(" --help Display this information\n"), stdout);
2999 fputs (_(" --target-help Display target specific command line options\n"), stdout);
3000 if (! verbose_flag)
3001 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
3002 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
3003 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
3004 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
3005 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
3006 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
3007 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
3008 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
3009 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
3010 fputs (_("\
3011 -print-multi-lib Display the mapping between command line options and\n\
3012 multiple library search directories\n"), stdout);
3013 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
3014 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3015 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3016 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3017 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
3018 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
3019 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3020 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3021 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3022 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3023 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3024 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3025 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3026 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
3027 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
3028 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3029 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3030 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3031 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3032 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3033 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3034 fputs (_("\
3035 -x <language> Specify the language of the following input files\n\
3036 Permissible languages include: c c++ assembler none\n\
3037 'none' means revert to the default behavior of\n\
3038 guessing the language based on the file's extension\n\
3039"), stdout);
3040
3041 printf (_("\
3042\nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3043 passed on to the various sub-processes invoked by %s. In order to pass\n\
3044 other options on to these processes the -W<letter> options must be used.\n\
3045"), programname);
3046
3047 /* The rest of the options are displayed by invocations of the various
3048 sub-processes. */
3049}
3050
3051static void
3052add_preprocessor_option (const char *option, int len)
3053{
3054 n_preprocessor_options++;
3055
3056 if (! preprocessor_options)
3057 preprocessor_options = xmalloc (n_preprocessor_options * sizeof (char *));
3058 else
3059 preprocessor_options = xrealloc (preprocessor_options,
3060 n_preprocessor_options * sizeof (char *));
3061
3062 preprocessor_options [n_preprocessor_options - 1] =
3063 save_string (option, len);
3064}
3065
3066static void
3067add_assembler_option (const char *option, int len)
3068{
3069 n_assembler_options++;
3070
3071 if (! assembler_options)
3072 assembler_options = xmalloc (n_assembler_options * sizeof (char *));
3073 else
3074 assembler_options = xrealloc (assembler_options,
3075 n_assembler_options * sizeof (char *));
3076
3077 assembler_options [n_assembler_options - 1] = save_string (option, len);
3078}
3079
3080static void
3081add_linker_option (const char *option, int len)
3082{
3083 n_linker_options++;
3084
3085 if (! linker_options)
3086 linker_options = xmalloc (n_linker_options * sizeof (char *));
3087 else
3088 linker_options = xrealloc (linker_options,
3089 n_linker_options * sizeof (char *));
3090
3091 linker_options [n_linker_options - 1] = save_string (option, len);
3092}
3093
3094/* Create the vector `switches' and its contents.
3095 Store its length in `n_switches'. */
3096
3097static void
3098process_command (int argc, const char **argv)
3099{
3100 int i;
3101 const char *temp;
3102 char *temp1;
3103 const char *spec_lang = 0;
3104 int last_language_n_infiles;
3105 int have_c = 0;
3106 int have_o = 0;
3107 int lang_n_infiles = 0;
3108#ifdef MODIFY_TARGET_NAME
3109 int is_modify_target_name;
3110 int j;
3111#endif
3112
3113 GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3114
3115 n_switches = 0;
3116 n_infiles = 0;
3117 added_libraries = 0;
3118
3119 /* Figure compiler version from version string. */
3120
3121 compiler_version = temp1 = xstrdup (version_string);
3122
3123 for (; *temp1; ++temp1)
3124 {
3125 if (*temp1 == ' ')
3126 {
3127 *temp1 = '\0';
3128 break;
3129 }
3130 }
3131
3132 /* If there is a -V or -b option (or both), process it now, before
3133 trying to interpret the rest of the command line. */
3134 if (argc > 1 && argv[1][0] == '-'
3135 && (argv[1][1] == 'V' || argv[1][1] == 'b'))
3136 {
3137 const char *new_version = DEFAULT_TARGET_VERSION;
3138 const char *new_machine = DEFAULT_TARGET_MACHINE;
3139 const char *progname = argv[0];
3140 char **new_argv;
3141 char *new_argv0;
3142 int baselen;
3143
3144 while (argc > 1 && argv[1][0] == '-'
3145 && (argv[1][1] == 'V' || argv[1][1] == 'b'))
3146 {
3147 char opt = argv[1][1];
3148 const char *arg;
3149 if (argv[1][2] != '\0')
3150 {
3151 arg = argv[1] + 2;
3152 argc -= 1;
3153 argv += 1;
3154 }
3155 else if (argc > 2)
3156 {
3157 arg = argv[2];
3158 argc -= 2;
3159 argv += 2;
3160 }
3161 else
3162 fatal ("`-%c' option must have argument", opt);
3163 if (opt == 'V')
3164 new_version = arg;
3165 else
3166 new_machine = arg;
3167 }
3168
3169 for (baselen = strlen (progname); baselen > 0; baselen--)
3170 if (IS_DIR_SEPARATOR (progname[baselen-1]))
3171 break;
3172 new_argv0 = xmemdup (progname, baselen,
3173 baselen + concat_length (new_version, new_machine,
3174 "-gcc-", NULL) + 1);
3175 strcpy (new_argv0 + baselen, new_machine);
3176 strcat (new_argv0, "-gcc-");
3177 strcat (new_argv0, new_version);
3178
3179 new_argv = xmemdup (argv, (argc + 1) * sizeof (argv[0]),
3180 (argc + 1) * sizeof (argv[0]));
3181 new_argv[0] = new_argv0;
3182
3183 execvp (new_argv0, new_argv);
3184 fatal ("couldn't run `%s': %s", new_argv0, xstrerror (errno));
3185 }
3186
3187 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3188 see if we can create it from the pathname specified in argv[0]. */
3189
3190 gcc_libexec_prefix = standard_libexec_prefix;
3191#ifndef FREEBSD_NATIVE
3192#ifndef VMS
3193 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3194 if (!gcc_exec_prefix)
3195 {
3196 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
3197 standard_exec_prefix);
3198 gcc_libexec_prefix = make_relative_prefix (argv[0],
3199 standard_bindir_prefix,
3200 standard_libexec_prefix);
3201 if (gcc_exec_prefix)
3202 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3203 }
3204 else
3205 gcc_libexec_prefix = make_relative_prefix (gcc_exec_prefix,
3206 standard_exec_prefix,
3207 standard_libexec_prefix);
3208#else
3209#endif
3210#endif /* not FREEBSD_NATIVE */
3211
3212 if (gcc_exec_prefix)
3213 {
3214 int len = strlen (gcc_exec_prefix);
3215
3216 if (len > (int) sizeof ("/lib/gcc/") - 1
3217 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3218 {
3219 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3220 if (IS_DIR_SEPARATOR (*temp)
3221 && strncmp (temp + 1, "lib", 3) == 0
3222 && IS_DIR_SEPARATOR (temp[4])
3223 && strncmp (temp + 5, "gcc", 3) == 0)
3224 len -= sizeof ("/lib/gcc/") - 1;
3225 }
3226
3227 set_std_prefix (gcc_exec_prefix, len);
3228 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3229 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3230 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3231 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3232 }
3233
3234 /* COMPILER_PATH and LIBRARY_PATH have values
3235 that are lists of directory names with colons. */
3236
3237 GET_ENVIRONMENT (temp, "COMPILER_PATH");
3238 if (temp)
3239 {
3240 const char *startp, *endp;
3241 char *nstore = alloca (strlen (temp) + 3);
3242
3243 startp = endp = temp;
3244 while (1)
3245 {
3246 if (*endp == PATH_SEPARATOR || *endp == 0)
3247 {
3248 strncpy (nstore, startp, endp - startp);
3249 if (endp == startp)
3250 strcpy (nstore, concat (".", dir_separator_str, NULL));
3251 else if (!IS_DIR_SEPARATOR (endp[-1]))
3252 {
3253 nstore[endp - startp] = DIR_SEPARATOR;
3254 nstore[endp - startp + 1] = 0;
3255 }
3256 else
3257 nstore[endp - startp] = 0;
3258 add_prefix (&exec_prefixes, nstore, 0,
3259 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3260 add_prefix (&include_prefixes,
3261 concat (nstore, "include", NULL),
3262 0, PREFIX_PRIORITY_LAST, 0, NULL, 0);
3263 if (*endp == 0)
3264 break;
3265 endp = startp = endp + 1;
3266 }
3267 else
3268 endp++;
3269 }
3270 }
3271
3272 GET_ENVIRONMENT (temp, LIBRARY_PATH_ENV);
3273 if (temp && *cross_compile == '0')
3274 {
3275 const char *startp, *endp;
3276 char *nstore = alloca (strlen (temp) + 3);
3277
3278 startp = endp = temp;
3279 while (1)
3280 {
3281 if (*endp == PATH_SEPARATOR || *endp == 0)
3282 {
3283 strncpy (nstore, startp, endp - startp);
3284 if (endp == startp)
3285 strcpy (nstore, concat (".", dir_separator_str, NULL));
3286 else if (!IS_DIR_SEPARATOR (endp[-1]))
3287 {
3288 nstore[endp - startp] = DIR_SEPARATOR;
3289 nstore[endp - startp + 1] = 0;
3290 }
3291 else
3292 nstore[endp - startp] = 0;
3293 add_prefix (&startfile_prefixes, nstore, NULL,
3294 PREFIX_PRIORITY_LAST, 0, NULL, 1);
3295 if (*endp == 0)
3296 break;
3297 endp = startp = endp + 1;
3298 }
3299 else
3300 endp++;
3301 }
3302 }
3303
3304 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3305 GET_ENVIRONMENT (temp, "LPATH");
3306 if (temp && *cross_compile == '0')
3307 {
3308 const char *startp, *endp;
3309 char *nstore = alloca (strlen (temp) + 3);
3310
3311 startp = endp = temp;
3312 while (1)
3313 {
3314 if (*endp == PATH_SEPARATOR || *endp == 0)
3315 {
3316 strncpy (nstore, startp, endp - startp);
3317 if (endp == startp)
3318 strcpy (nstore, concat (".", dir_separator_str, NULL));
3319 else if (!IS_DIR_SEPARATOR (endp[-1]))
3320 {
3321 nstore[endp - startp] = DIR_SEPARATOR;
3322 nstore[endp - startp + 1] = 0;
3323 }
3324 else
3325 nstore[endp - startp] = 0;
3326 add_prefix (&startfile_prefixes, nstore, NULL,
3327 PREFIX_PRIORITY_LAST, 0, NULL, 1);
3328 if (*endp == 0)
3329 break;
3330 endp = startp = endp + 1;
3331 }
3332 else
3333 endp++;
3334 }
3335 }
3336
3337 /* Options specified as if they appeared on the command line. */
3338 temp = getenv ("GCC_OPTIONS");
3339 if ((temp) && (strlen (temp) > 0))
3340 {
3341 int len;
3342 int optc = 1;
3343 int new_argc;
3344 const char **new_argv;
3345 char *envopts;
3346
3347 while (isspace (*temp))
3348 temp++;
3349 len = strlen (temp);
3350 envopts = (char *) xmalloc (len + 1);
3351 strcpy (envopts, temp);
3352
3353 for (i = 0; i < (len - 1); i++)
3354 if ((isspace (envopts[i])) && ! (isspace (envopts[i+1])))
3355 optc++;
3356
3357 new_argv = (const char **) alloca ((optc + argc) * sizeof(char *));
3358
3359 for (i = 0, new_argc = 1; new_argc <= optc; new_argc++)
3360 {
3361 while (isspace (envopts[i]))
3362 i++;
3363 new_argv[new_argc] = envopts + i;
3364 while (!isspace (envopts[i]) && (envopts[i] != '\0'))
3365 i++;
3366 envopts[i++] = '\0';
3367 }
3368 for (i = 1; i < argc; i++)
3369 new_argv[new_argc++] = argv[i];
3370
3371 argv = new_argv;
3372 argc = new_argc;
3373 }
3374
3375 /* Convert new-style -- options to old-style. */
3376 translate_options (&argc, (const char *const **) &argv);
3377
3378 /* Do language-specific adjustment/addition of flags. */
3379 lang_specific_driver (&argc, (const char *const **) &argv, &added_libraries);
3380
3381 /* Scan argv twice. Here, the first time, just count how many switches
3382 there will be in their vector, and how many input files in theirs.
3383 Here we also parse the switches that cc itself uses (e.g. -v). */
3384
3385 for (i = 1; i < argc; i++)
3386 {
3387 if (! strcmp (argv[i], "-dumpspecs"))
3388 {
3389 struct spec_list *sl;
3390 init_spec ();
3391 for (sl = specs; sl; sl = sl->next)
3392 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3393 if (link_command_spec)
3394 printf ("*link_command:\n%s\n\n", link_command_spec);
3395 exit (0);
3396 }
3397 else if (! strcmp (argv[i], "-dumpversion"))
3398 {
3399 printf ("%s\n", spec_version);
3400 exit (0);
3401 }
3402 else if (! strcmp (argv[i], "-dumpmachine"))
3403 {
3404 printf ("%s\n", spec_machine);
3405 exit (0);
3406 }
3407 else if (strcmp (argv[i], "-fversion") == 0)
3408 {
3409 /* translate_options () has turned --version into -fversion. */
3410 printf (_("%s (GCC) %s\n"), programname, version_string);
|
3410 _("(C)"));
3411 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
3412warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
3413 stdout);
3414 exit (0);
3415 }
3416 else if (strcmp (argv[i], "-fhelp") == 0)
3417 {
3418 /* translate_options () has turned --help into -fhelp. */
3419 print_help_list = 1;
3420
3421 /* We will be passing a dummy file on to the sub-processes. */
3422 n_infiles++;
3423 n_switches++;
3424
3425 /* CPP driver cannot obtain switch from cc1_options. */
3426 if (is_cpp_driver)
3427 add_preprocessor_option ("--help", 6);
3428 add_assembler_option ("--help", 6);
3429 add_linker_option ("--help", 6);
3430 }
3431 else if (strcmp (argv[i], "-ftarget-help") == 0)
3432 {
3433 /* translate_options() has turned --target-help into -ftarget-help. */
3434 target_help_flag = 1;
3435
3436 /* We will be passing a dummy file on to the sub-processes. */
3437 n_infiles++;
3438 n_switches++;
3439
3440 /* CPP driver cannot obtain switch from cc1_options. */
3441 if (is_cpp_driver)
3442 add_preprocessor_option ("--target-help", 13);
3443 add_assembler_option ("--target-help", 13);
3444 add_linker_option ("--target-help", 13);
3445 }
3446 else if (! strcmp (argv[i], "-pass-exit-codes"))
3447 {
3448 pass_exit_codes = 1;
3449 n_switches++;
3450 }
3451 else if (! strcmp (argv[i], "-print-search-dirs"))
3452 print_search_dirs = 1;
3453 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3454 print_file_name = "libgcc.a";
3455 else if (! strncmp (argv[i], "-print-file-name=", 17))
3456 print_file_name = argv[i] + 17;
3457 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3458 print_prog_name = argv[i] + 17;
3459 else if (! strcmp (argv[i], "-print-multi-lib"))
3460 print_multi_lib = 1;
3461 else if (! strcmp (argv[i], "-print-multi-directory"))
3462 print_multi_directory = 1;
3463 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3464 print_multi_os_directory = 1;
3465 else if (! strncmp (argv[i], "-Wa,", 4))
3466 {
3467 int prev, j;
3468 /* Pass the rest of this option to the assembler. */
3469
3470 /* Split the argument at commas. */
3471 prev = 4;
3472 for (j = 4; argv[i][j]; j++)
3473 if (argv[i][j] == ',')
3474 {
3475 add_assembler_option (argv[i] + prev, j - prev);
3476 prev = j + 1;
3477 }
3478
3479 /* Record the part after the last comma. */
3480 add_assembler_option (argv[i] + prev, j - prev);
3481 }
3482 else if (! strncmp (argv[i], "-Wp,", 4))
3483 {
3484 int prev, j;
3485 /* Pass the rest of this option to the preprocessor. */
3486
3487 /* Split the argument at commas. */
3488 prev = 4;
3489 for (j = 4; argv[i][j]; j++)
3490 if (argv[i][j] == ',')
3491 {
3492 add_preprocessor_option (argv[i] + prev, j - prev);
3493 prev = j + 1;
3494 }
3495
3496 /* Record the part after the last comma. */
3497 add_preprocessor_option (argv[i] + prev, j - prev);
3498 }
3499 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3500 /* The +e options to the C++ front-end. */
3501 n_switches++;
3502 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3503 {
3504 int j;
3505 /* Split the argument at commas. */
3506 for (j = 3; argv[i][j]; j++)
3507 n_infiles += (argv[i][j] == ',');
3508 }
3509 else if (strcmp (argv[i], "-Xlinker") == 0)
3510 {
3511 if (i + 1 == argc)
3512 fatal ("argument to `-Xlinker' is missing");
3513
3514 n_infiles++;
3515 i++;
3516 }
3517 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3518 {
3519 if (i + 1 == argc)
3520 fatal ("argument to `-Xpreprocessor' is missing");
3521
3522 add_preprocessor_option (argv[i+1], strlen (argv[i+1]));
3523 }
3524 else if (strcmp (argv[i], "-Xassembler") == 0)
3525 {
3526 if (i + 1 == argc)
3527 fatal ("argument to `-Xassembler' is missing");
3528
3529 add_assembler_option (argv[i+1], strlen (argv[i+1]));
3530 }
3531 else if (strcmp (argv[i], "-l") == 0)
3532 {
3533 if (i + 1 == argc)
3534 fatal ("argument to `-l' is missing");
3535
3536 n_infiles++;
3537 i++;
3538 }
3539 else if (strncmp (argv[i], "-l", 2) == 0)
3540 n_infiles++;
3541 else if (strcmp (argv[i], "-save-temps") == 0)
3542 {
3543 save_temps_flag = 1;
3544 n_switches++;
3545 }
3546 else if (strcmp (argv[i], "-specs") == 0)
3547 {
3548 struct user_specs *user = xmalloc (sizeof (struct user_specs));
3549 if (++i >= argc)
3550 fatal ("argument to `-specs' is missing");
3551
3552 user->next = (struct user_specs *) 0;
3553 user->filename = argv[i];
3554 if (user_specs_tail)
3555 user_specs_tail->next = user;
3556 else
3557 user_specs_head = user;
3558 user_specs_tail = user;
3559 }
3560 else if (strncmp (argv[i], "-specs=", 7) == 0)
3561 {
3562 struct user_specs *user = xmalloc (sizeof (struct user_specs));
3563 if (strlen (argv[i]) == 7)
3564 fatal ("argument to `-specs=' is missing");
3565
3566 user->next = (struct user_specs *) 0;
3567 user->filename = argv[i] + 7;
3568 if (user_specs_tail)
3569 user_specs_tail->next = user;
3570 else
3571 user_specs_head = user;
3572 user_specs_tail = user;
3573 }
3574 else if (strcmp (argv[i], "-time") == 0)
3575 report_times = 1;
3576 else if (strcmp (argv[i], "-pipe") == 0)
3577 {
3578 /* -pipe has to go into the switches array as well as
3579 setting a flag. */
3580 use_pipes = 1;
3581 n_switches++;
3582 }
3583 else if (strcmp (argv[i], "-###") == 0)
3584 {
3585 /* This is similar to -v except that there is no execution
3586 of the commands and the echoed arguments are quoted. It
3587 is intended for use in shell scripts to capture the
3588 driver-generated command line. */
3589 verbose_only_flag++;
3590 verbose_flag++;
3591 }
3592 else if (argv[i][0] == '-' && argv[i][1] != 0)
3593 {
3594 const char *p = &argv[i][1];
3595 int c = *p;
3596
3597 switch (c)
3598 {
3599 case 'b':
3600 case 'V':
3601 fatal ("`-%c' must come at the start of the command line", c);
3602 break;
3603
3604 case 'B':
3605 {
3606 const char *value;
3607 int len;
3608
3609 if (p[1] == 0 && i + 1 == argc)
3610 fatal ("argument to `-B' is missing");
3611 if (p[1] == 0)
3612 value = argv[++i];
3613 else
3614 value = p + 1;
3615
3616 len = strlen (value);
3617
3618 /* Catch the case where the user has forgotten to append a
3619 directory separator to the path. Note, they may be using
3620 -B to add an executable name prefix, eg "i386-elf-", in
3621 order to distinguish between multiple installations of
3622 GCC in the same directory. Hence we must check to see
3623 if appending a directory separator actually makes a
3624 valid directory name. */
3625 if (! IS_DIR_SEPARATOR (value [len - 1])
3626 && is_directory (value, "", 0))
3627 {
3628 char *tmp = xmalloc (len + 2);
3629 strcpy (tmp, value);
3630 tmp[len] = DIR_SEPARATOR;
3631 tmp[++ len] = 0;
3632 value = tmp;
3633 }
3634
3635 /* As a kludge, if the arg is "[foo/]stageN/", just
3636 add "[foo/]include" to the include prefix. */
3637 if ((len == 7
3638 || (len > 7
3639 && (IS_DIR_SEPARATOR (value[len - 8]))))
3640 && strncmp (value + len - 7, "stage", 5) == 0
3641 && ISDIGIT (value[len - 2])
3642 && (IS_DIR_SEPARATOR (value[len - 1])))
3643 {
3644 if (len == 7)
3645 add_prefix (&include_prefixes, "include", NULL,
3646 PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3647 else
3648 {
3649 char * string = xmalloc (len + 1);
3650
3651 strncpy (string, value, len - 7);
3652 strcpy (string + len - 7, "include");
3653 add_prefix (&include_prefixes, string, NULL,
3654 PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3655 }
3656 }
3657
3658 add_prefix (&exec_prefixes, value, NULL,
3659 PREFIX_PRIORITY_B_OPT, 0, &warn_B, 0);
3660 add_prefix (&startfile_prefixes, value, NULL,
3661 PREFIX_PRIORITY_B_OPT, 0, &warn_B, 0);
3662 add_prefix (&include_prefixes, concat (value, "include", NULL),
3663 NULL, PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3664 n_switches++;
3665 }
3666 break;
3667
3668 case 'v': /* Print our subcommands and print versions. */
3669 n_switches++;
3670 /* If they do anything other than exactly `-v', don't set
3671 verbose_flag; rather, continue on to give the error. */
3672 if (p[1] != 0)
3673 break;
3674 verbose_flag++;
3675 break;
3676
3677 case 'S':
3678 case 'c':
3679 if (p[1] == 0)
3680 {
3681 have_c = 1;
3682 n_switches++;
3683 break;
3684 }
3685 goto normal_switch;
3686
3687 case 'o':
3688 have_o = 1;
3689#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3690 if (! have_c)
3691 {
3692 int skip;
3693
3694 /* Forward scan, just in case -S or -c is specified
3695 after -o. */
3696 int j = i + 1;
3697 if (p[1] == 0)
3698 ++j;
3699 while (j < argc)
3700 {
3701 if (argv[j][0] == '-')
3702 {
3703 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
3704 && argv[j][2] == 0)
3705 {
3706 have_c = 1;
3707 break;
3708 }
3709 else if ((skip = SWITCH_TAKES_ARG (argv[j][1])))
3710 j += skip - (argv[j][2] != 0);
3711 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1)))
3712 j += skip;
3713 }
3714 j++;
3715 }
3716 }
3717#endif
3718#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3719 if (p[1] == 0)
3720 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0);
3721 else
3722 argv[i] = convert_filename (argv[i], ! have_c, 0);
3723#endif
3724 goto normal_switch;
3725
3726 default:
3727 normal_switch:
3728
3729#ifdef MODIFY_TARGET_NAME
3730 is_modify_target_name = 0;
3731
3732 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3733 if (! strcmp (argv[i], modify_target[j].sw))
3734 {
3735 char *new_name = xmalloc (strlen (modify_target[j].str)
3736 + strlen (spec_machine));
3737 const char *p, *r;
3738 char *q;
3739 int made_addition = 0;
3740
3741 is_modify_target_name = 1;
3742 for (p = spec_machine, q = new_name; *p != 0; )
3743 {
3744 if (modify_target[j].add_del == DELETE
3745 && (! strncmp (q, modify_target[j].str,
3746 strlen (modify_target[j].str))))
3747 p += strlen (modify_target[j].str);
3748 else if (modify_target[j].add_del == ADD
3749 && ! made_addition && *p == '-')
3750 {
3751 for (r = modify_target[j].str; *r != 0; )
3752 *q++ = *r++;
3753 made_addition = 1;
3754 }
3755
3756 *q++ = *p++;
3757 }
3758
3759 spec_machine = new_name;
3760 }
3761
3762 if (is_modify_target_name)
3763 break;
3764#endif
3765
3766 n_switches++;
3767
3768 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
3769 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
3770 else if (WORD_SWITCH_TAKES_ARG (p))
3771 i += WORD_SWITCH_TAKES_ARG (p);
3772 }
3773 }
3774 else
3775 {
3776 n_infiles++;
3777 lang_n_infiles++;
3778 }
3779 }
3780
3781 combine_inputs = (have_c && have_o && lang_n_infiles > 1);
3782
3783 if ((save_temps_flag || report_times) && use_pipes)
3784 {
3785 /* -save-temps overrides -pipe, so that temp files are produced */
3786 if (save_temps_flag)
3787 error ("warning: -pipe ignored because -save-temps specified");
3788 /* -time overrides -pipe because we can't get correct stats when
3789 multiple children are running at once. */
3790 else if (report_times)
3791 error ("warning: -pipe ignored because -time specified");
3792
3793 use_pipes = 0;
3794 }
3795
3796 /* Set up the search paths before we go looking for config files. */
3797
3798 /* These come before the md prefixes so that we will find gcc's subcommands
3799 (such as cpp) rather than those of the host system. */
3800 /* Use 2 as fourth arg meaning try just the machine as a suffix,
3801 as well as trying the machine and the version. */
3802#ifdef FREEBSD_NATIVE
3803 add_prefix (&exec_prefixes, PREFIX"/bin/", "BINUTILS",
3804 PREFIX_PRIORITY_LAST, 0, warn_std_ptr, 0);
3805#endif /* FREEBSD_NATIVE */
3806#ifndef OS2
3807 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
3808 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3809 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
3810 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3811#ifndef FREEBSD_NATIVE
3812 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3813 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3814 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS",
3815 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3816 add_prefix (&exec_prefixes, standard_exec_prefix_2, "BINUTILS",
3817 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3818#endif /* FREEBSD_NATIVE */
3819#endif
3820
3821#ifndef FREEBSD_NATIVE
3822 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3823 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3824 add_prefix (&startfile_prefixes, standard_exec_prefix_2, "BINUTILS",
3825 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3826#endif /* not FREEBSD_NATIVE */
3827
3828 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3829 dir_separator_str, NULL);
3830
3831 /* If tooldir is relative, base it on exec_prefixes. A relative
3832 tooldir lets us move the installed tree as a unit.
3833
3834 If GCC_EXEC_PREFIX is defined, then we want to add two relative
3835 directories, so that we can search both the user specified directory
3836 and the standard place. */
3837
3838 if (!IS_ABSOLUTE_PATH (tooldir_prefix))
3839 {
3840 if (gcc_exec_prefix)
3841 {
3842 char *gcc_exec_tooldir_prefix
3843 = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
3844 spec_version, dir_separator_str, tooldir_prefix, NULL);
3845
3846 add_prefix (&exec_prefixes,
3847 concat (gcc_exec_tooldir_prefix, "bin",
3848 dir_separator_str, NULL),
3849 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 0);
3850 add_prefix (&startfile_prefixes,
3851 concat (gcc_exec_tooldir_prefix, "lib",
3852 dir_separator_str, NULL),
3853 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
3854 }
3855
3856 tooldir_prefix = concat (standard_exec_prefix, spec_machine,
3857 dir_separator_str, spec_version,
3858 dir_separator_str, tooldir_prefix, NULL);
3859 }
3860
3861#ifndef FREEBSD_NATIVE
3862 add_prefix (&exec_prefixes,
3863 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3864 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 0);
3865 add_prefix (&startfile_prefixes,
3866 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3867 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
3868
3869#if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
3870 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
3871 then consider it to relocate with the rest of the GCC installation
3872 if GCC_EXEC_PREFIX is set.
3873 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
3874 if (target_system_root && gcc_exec_prefix)
3875 {
3876 char *tmp_prefix = make_relative_prefix (argv[0],
3877 standard_bindir_prefix,
3878 target_system_root);
3879 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
3880 {
3881 target_system_root = tmp_prefix;
3882 target_system_root_changed = 1;
3883 }
3884 }
3885#endif
3886#endif /* FREEBSD_NATIVE */
3887
3888 /* More prefixes are enabled in main, after we read the specs file
3889 and determine whether this is cross-compilation or not. */
3890
3891 /* Then create the space for the vectors and scan again. */
3892
3893 switches = xmalloc ((n_switches + 1) * sizeof (struct switchstr));
3894 infiles = xmalloc ((n_infiles + 1) * sizeof (struct infile));
3895 n_switches = 0;
3896 n_infiles = 0;
3897 last_language_n_infiles = -1;
3898
3899 /* This, time, copy the text of each switch and store a pointer
3900 to the copy in the vector of switches.
3901 Store all the infiles in their vector. */
3902
3903 for (i = 1; i < argc; i++)
3904 {
3905 /* Just skip the switches that were handled by the preceding loop. */
3906#ifdef MODIFY_TARGET_NAME
3907 is_modify_target_name = 0;
3908
3909 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3910 if (! strcmp (argv[i], modify_target[j].sw))
3911 is_modify_target_name = 1;
3912
3913 if (is_modify_target_name)
3914 ;
3915 else
3916#endif
3917 if (! strncmp (argv[i], "-Wa,", 4))
3918 ;
3919 else if (! strncmp (argv[i], "-Wp,", 4))
3920 ;
3921 else if (! strcmp (argv[i], "-pass-exit-codes"))
3922 ;
3923 else if (! strcmp (argv[i], "-print-search-dirs"))
3924 ;
3925 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3926 ;
3927 else if (! strncmp (argv[i], "-print-file-name=", 17))
3928 ;
3929 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3930 ;
3931 else if (! strcmp (argv[i], "-print-multi-lib"))
3932 ;
3933 else if (! strcmp (argv[i], "-print-multi-directory"))
3934 ;
3935 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3936 ;
3937 else if (! strcmp (argv[i], "-ftarget-help"))
3938 ;
3939 else if (! strcmp (argv[i], "-fhelp"))
3940 ;
3941 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3942 {
3943 /* Compensate for the +e options to the C++ front-end;
3944 they're there simply for cfront call-compatibility. We do
3945 some magic in default_compilers to pass them down properly.
3946 Note we deliberately start at the `+' here, to avoid passing
3947 -e0 or -e1 down into the linker. */
3948 switches[n_switches].part1 = &argv[i][0];
3949 switches[n_switches].args = 0;
3950 switches[n_switches].live_cond = SWITCH_OK;
3951 switches[n_switches].validated = 0;
3952 n_switches++;
3953 }
3954 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3955 {
3956 int prev, j;
3957 /* Split the argument at commas. */
3958 prev = 4;
3959 for (j = 4; argv[i][j]; j++)
3960 if (argv[i][j] == ',')
3961 {
3962 infiles[n_infiles].language = "*";
3963 infiles[n_infiles++].name
3964 = save_string (argv[i] + prev, j - prev);
3965 prev = j + 1;
3966 }
3967 /* Record the part after the last comma. */
3968 infiles[n_infiles].language = "*";
3969 infiles[n_infiles++].name = argv[i] + prev;
3970 }
3971 else if (strcmp (argv[i], "-Xlinker") == 0)
3972 {
3973 infiles[n_infiles].language = "*";
3974 infiles[n_infiles++].name = argv[++i];
3975 }
3976 else if (strcmp (argv[i], "-Xassembler") == 0)
3977 {
3978 infiles[n_infiles].language = "*";
3979 infiles[n_infiles++].name = argv[++i];
3980 }
3981 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3982 {
3983 infiles[n_infiles].language = "*";
3984 infiles[n_infiles++].name = argv[++i];
3985 }
3986 else if (strcmp (argv[i], "-l") == 0)
3987 { /* POSIX allows separation of -l and the lib arg;
3988 canonicalize by concatenating -l with its arg */
3989 infiles[n_infiles].language = "*";
3990 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL);
3991 }
3992 else if (strncmp (argv[i], "-l", 2) == 0)
3993 {
3994 infiles[n_infiles].language = "*";
3995 infiles[n_infiles++].name = argv[i];
3996 }
3997 else if (strcmp (argv[i], "-specs") == 0)
3998 i++;
3999 else if (strncmp (argv[i], "-specs=", 7) == 0)
4000 ;
4001 else if (strcmp (argv[i], "-time") == 0)
4002 ;
4003 else if (strcmp (argv[i], "-###") == 0)
4004 ;
4005 else if (argv[i][0] == '-' && argv[i][1] != 0)
4006 {
4007 const char *p = &argv[i][1];
4008 int c = *p;
4009
4010 if (c == 'x')
4011 {
4012 if (p[1] == 0 && i + 1 == argc)
4013 fatal ("argument to `-x' is missing");
4014 if (p[1] == 0)
4015 spec_lang = argv[++i];
4016 else
4017 spec_lang = p + 1;
4018 if (! strcmp (spec_lang, "none"))
4019 /* Suppress the warning if -xnone comes after the last input
4020 file, because alternate command interfaces like g++ might
4021 find it useful to place -xnone after each input file. */
4022 spec_lang = 0;
4023 else
4024 last_language_n_infiles = n_infiles;
4025 continue;
4026 }
4027 switches[n_switches].part1 = p;
4028 /* Deal with option arguments in separate argv elements. */
4029 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
4030 || WORD_SWITCH_TAKES_ARG (p))
4031 {
4032 int j = 0;
4033 int n_args = WORD_SWITCH_TAKES_ARG (p);
4034
4035 if (n_args == 0)
4036 {
4037 /* Count only the option arguments in separate argv elements. */
4038 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
4039 }
4040 if (i + n_args >= argc)
4041 fatal ("argument to `-%s' is missing", p);
4042 switches[n_switches].args
4043 = xmalloc ((n_args + 1) * sizeof(const char *));
4044 while (j < n_args)
4045 switches[n_switches].args[j++] = argv[++i];
4046 /* Null-terminate the vector. */
4047 switches[n_switches].args[j] = 0;
4048 }
4049 else if (strchr (switches_need_spaces, c))
4050 {
4051 /* On some systems, ld cannot handle some options without
4052 a space. So split the option from its argument. */
4053 char *part1 = xmalloc (2);
4054 part1[0] = c;
4055 part1[1] = '\0';
4056
4057 switches[n_switches].part1 = part1;
4058 switches[n_switches].args = xmalloc (2 * sizeof (const char *));
4059 switches[n_switches].args[0] = xstrdup (p+1);
4060 switches[n_switches].args[1] = 0;
4061 }
4062 else
4063 switches[n_switches].args = 0;
4064
4065 switches[n_switches].live_cond = SWITCH_OK;
4066 switches[n_switches].validated = 0;
4067 switches[n_switches].ordering = 0;
4068 /* These are always valid, since gcc.c itself understands them. */
4069 if (!strcmp (p, "save-temps")
4070 || !strcmp (p, "static-libgcc")
4071 || !strcmp (p, "shared-libgcc")
4072 || !strcmp (p, "pipe"))
4073 switches[n_switches].validated = 1;
4074 else
4075 {
4076 char ch = switches[n_switches].part1[0];
4077 if (ch == 'B')
4078 switches[n_switches].validated = 1;
4079 }
4080 n_switches++;
4081 }
4082 else
4083 {
4084#ifdef HAVE_TARGET_OBJECT_SUFFIX
4085 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
4086#endif
4087
4088 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
4089 {
4090 perror_with_name (argv[i]);
4091 error_count++;
4092 }
4093 else
4094 {
4095 infiles[n_infiles].language = spec_lang;
4096 infiles[n_infiles++].name = argv[i];
4097 }
4098 }
4099 }
4100
4101 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4102 error ("warning: `-x %s' after last input file has no effect", spec_lang);
4103
4104 /* Ensure we only invoke each subprocess once. */
4105 if (target_help_flag || print_help_list)
4106 {
4107 n_infiles = 1;
4108
4109 /* Create a dummy input file, so that we can pass --target-help on to
4110 the various sub-processes. */
4111 infiles[0].language = "c";
4112 infiles[0].name = "help-dummy";
4113
4114 if (target_help_flag)
4115 {
4116 switches[n_switches].part1 = "--target-help";
4117 switches[n_switches].args = 0;
4118 switches[n_switches].live_cond = SWITCH_OK;
4119 switches[n_switches].validated = 0;
4120
4121 n_switches++;
4122 }
4123
4124 if (print_help_list)
4125 {
4126 switches[n_switches].part1 = "--help";
4127 switches[n_switches].args = 0;
4128 switches[n_switches].live_cond = SWITCH_OK;
4129 switches[n_switches].validated = 0;
4130
4131 n_switches++;
4132 }
4133 }
4134
4135 switches[n_switches].part1 = 0;
4136 infiles[n_infiles].name = 0;
4137}
4138
4139/* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4140 and place that in the environment. */
4141
4142static void
4143set_collect_gcc_options (void)
4144{
4145 int i;
4146 int first_time;
4147
4148 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4149 the compiler. */
4150 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4151 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4152
4153 first_time = TRUE;
4154 for (i = 0; (int) i < n_switches; i++)
4155 {
4156 const char *const *args;
4157 const char *p, *q;
4158 if (!first_time)
4159 obstack_grow (&collect_obstack, " ", 1);
4160
4161 first_time = FALSE;
4162
4163 /* Ignore elided switches. */
4164 if (switches[i].live_cond == SWITCH_IGNORE)
4165 continue;
4166
4167 obstack_grow (&collect_obstack, "'-", 2);
4168 q = switches[i].part1;
4169 while ((p = strchr (q, '\'')))
4170 {
4171 obstack_grow (&collect_obstack, q, p - q);
4172 obstack_grow (&collect_obstack, "'\\''", 4);
4173 q = ++p;
4174 }
4175 obstack_grow (&collect_obstack, q, strlen (q));
4176 obstack_grow (&collect_obstack, "'", 1);
4177
4178 for (args = switches[i].args; args && *args; args++)
4179 {
4180 obstack_grow (&collect_obstack, " '", 2);
4181 q = *args;
4182 while ((p = strchr (q, '\'')))
4183 {
4184 obstack_grow (&collect_obstack, q, p - q);
4185 obstack_grow (&collect_obstack, "'\\''", 4);
4186 q = ++p;
4187 }
4188 obstack_grow (&collect_obstack, q, strlen (q));
4189 obstack_grow (&collect_obstack, "'", 1);
4190 }
4191 }
4192 obstack_grow (&collect_obstack, "\0", 1);
4193 putenv (obstack_finish (&collect_obstack));
4194}
4195
4196/* Process a spec string, accumulating and running commands. */
4197
4198/* These variables describe the input file name.
4199 input_file_number is the index on outfiles of this file,
4200 so that the output file name can be stored for later use by %o.
4201 input_basename is the start of the part of the input file
4202 sans all directory names, and basename_length is the number
4203 of characters starting there excluding the suffix .c or whatever. */
4204
4205static const char *input_filename;
4206static int input_file_number;
4207size_t input_filename_length;
4208static int basename_length;
4209static int suffixed_basename_length;
4210static const char *input_basename;
4211static const char *input_suffix;
4212static struct stat input_stat;
4213static int input_stat_set;
4214
4215/* The compiler used to process the current input file. */
4216static struct compiler *input_file_compiler;
4217
4218/* These are variables used within do_spec and do_spec_1. */
4219
4220/* Nonzero if an arg has been started and not yet terminated
4221 (with space, tab or newline). */
4222static int arg_going;
4223
4224/* Nonzero means %d or %g has been seen; the next arg to be terminated
4225 is a temporary file name. */
4226static int delete_this_arg;
4227
4228/* Nonzero means %w has been seen; the next arg to be terminated
4229 is the output file name of this compilation. */
4230static int this_is_output_file;
4231
4232/* Nonzero means %s has been seen; the next arg to be terminated
4233 is the name of a library file and we should try the standard
4234 search dirs for it. */
4235static int this_is_library_file;
4236
4237/* Nonzero means that the input of this command is coming from a pipe. */
4238static int input_from_pipe;
4239
4240/* Nonnull means substitute this for any suffix when outputting a switches
4241 arguments. */
4242static const char *suffix_subst;
4243
4244/* Process the spec SPEC and run the commands specified therein.
4245 Returns 0 if the spec is successfully processed; -1 if failed. */
4246
4247int
4248do_spec (const char *spec)
4249{
4250 int value;
4251
4252 value = do_spec_2 (spec);
4253
4254 /* Force out any unfinished command.
4255 If -pipe, this forces out the last command if it ended in `|'. */
4256 if (value == 0)
4257 {
4258 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4259 argbuf_index--;
4260
4261 set_collect_gcc_options ();
4262
4263 if (argbuf_index > 0)
4264 value = execute ();
4265 }
4266
4267 return value;
4268}
4269
4270static int
4271do_spec_2 (const char *spec)
4272{
4273 const char *string;
4274 int result;
4275
4276 clear_args ();
4277 arg_going = 0;
4278 delete_this_arg = 0;
4279 this_is_output_file = 0;
4280 this_is_library_file = 0;
4281 input_from_pipe = 0;
4282 suffix_subst = NULL;
4283
4284 result = do_spec_1 (spec, 0, NULL);
4285
4286 /* End any pending argument. */
4287 if (arg_going)
4288 {
4289 obstack_1grow (&obstack, 0);
4290 string = obstack_finish (&obstack);
4291 if (this_is_library_file)
4292 string = find_file (string);
4293 store_arg (string, delete_this_arg, this_is_output_file);
4294 if (this_is_output_file)
4295 outfiles[input_file_number] = string;
4296 arg_going = 0;
4297 }
4298
4299 return result;
4300}
4301
4302
4303/* Process the given spec string and add any new options to the end
4304 of the switches/n_switches array. */
4305
4306static void
4307do_option_spec (const char *name, const char *spec)
4308{
4309 unsigned int i, value_count, value_len;
4310 const char *p, *q, *value;
4311 char *tmp_spec, *tmp_spec_p;
4312
4313 if (configure_default_options[0].name == NULL)
4314 return;
4315
4316 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4317 if (strcmp (configure_default_options[i].name, name) == 0)
4318 break;
4319 if (i == ARRAY_SIZE (configure_default_options))
4320 return;
4321
4322 value = configure_default_options[i].value;
4323 value_len = strlen (value);
4324
4325 /* Compute the size of the final spec. */
4326 value_count = 0;
4327 p = spec;
4328 while ((p = strstr (p, "%(VALUE)")) != NULL)
4329 {
4330 p ++;
4331 value_count ++;
4332 }
4333
4334 /* Replace each %(VALUE) by the specified value. */
4335 tmp_spec = alloca (strlen (spec) + 1
4336 + value_count * (value_len - strlen ("%(VALUE)")));
4337 tmp_spec_p = tmp_spec;
4338 q = spec;
4339 while ((p = strstr (q, "%(VALUE)")) != NULL)
4340 {
4341 memcpy (tmp_spec_p, q, p - q);
4342 tmp_spec_p = tmp_spec_p + (p - q);
4343 memcpy (tmp_spec_p, value, value_len);
4344 tmp_spec_p += value_len;
4345 q = p + strlen ("%(VALUE)");
4346 }
4347 strcpy (tmp_spec_p, q);
4348
4349 do_self_spec (tmp_spec);
4350}
4351
4352/* Process the given spec string and add any new options to the end
4353 of the switches/n_switches array. */
4354
4355static void
4356do_self_spec (const char *spec)
4357{
4358 do_spec_2 (spec);
4359 do_spec_1 (" ", 0, NULL);
4360
4361 if (argbuf_index > 0)
4362 {
4363 int i, first;
4364
4365 first = n_switches;
4366 n_switches += argbuf_index;
4367 switches = xrealloc (switches,
4368 sizeof (struct switchstr) * (n_switches + 1));
4369
4370 switches[n_switches] = switches[first];
4371 for (i = 0; i < argbuf_index; i++)
4372 {
4373 struct switchstr *sw;
4374
4375 /* Each switch should start with '-'. */
4376 if (argbuf[i][0] != '-')
4377 abort ();
4378
4379 sw = &switches[i + first];
4380 sw->part1 = &argbuf[i][1];
4381 sw->args = 0;
4382 sw->live_cond = SWITCH_OK;
4383 sw->validated = 0;
4384 sw->ordering = 0;
4385 }
4386 }
4387}
4388
4389/* Process the sub-spec SPEC as a portion of a larger spec.
4390 This is like processing a whole spec except that we do
4391 not initialize at the beginning and we do not supply a
4392 newline by default at the end.
4393 INSWITCH nonzero means don't process %-sequences in SPEC;
4394 in this case, % is treated as an ordinary character.
4395 This is used while substituting switches.
4396 INSWITCH nonzero also causes SPC not to terminate an argument.
4397
4398 Value is zero unless a line was finished
4399 and the command on that line reported an error. */
4400
4401static int
4402do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4403{
4404 const char *p = spec;
4405 int c;
4406 int i;
4407 const char *string;
4408 int value;
4409
4410 while ((c = *p++))
4411 /* If substituting a switch, treat all chars like letters.
4412 Otherwise, NL, SPC, TAB and % are special. */
4413 switch (inswitch ? 'a' : c)
4414 {
4415 case '\n':
4416 /* End of line: finish any pending argument,
4417 then run the pending command if one has been started. */
4418 if (arg_going)
4419 {
4420 obstack_1grow (&obstack, 0);
4421 string = obstack_finish (&obstack);
4422 if (this_is_library_file)
4423 string = find_file (string);
4424 store_arg (string, delete_this_arg, this_is_output_file);
4425 if (this_is_output_file)
4426 outfiles[input_file_number] = string;
4427 }
4428 arg_going = 0;
4429
4430 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4431 {
4432 /* A `|' before the newline means use a pipe here,
4433 but only if -pipe was specified.
4434 Otherwise, execute now and don't pass the `|' as an arg. */
4435 if (use_pipes)
4436 {
4437 input_from_pipe = 1;
4438 break;
4439 }
4440 else
4441 argbuf_index--;
4442 }
4443
4444 set_collect_gcc_options ();
4445
4446 if (argbuf_index > 0)
4447 {
4448 value = execute ();
4449 if (value)
4450 return value;
4451 }
4452 /* Reinitialize for a new command, and for a new argument. */
4453 clear_args ();
4454 arg_going = 0;
4455 delete_this_arg = 0;
4456 this_is_output_file = 0;
4457 this_is_library_file = 0;
4458 input_from_pipe = 0;
4459 break;
4460
4461 case '|':
4462 /* End any pending argument. */
4463 if (arg_going)
4464 {
4465 obstack_1grow (&obstack, 0);
4466 string = obstack_finish (&obstack);
4467 if (this_is_library_file)
4468 string = find_file (string);
4469 store_arg (string, delete_this_arg, this_is_output_file);
4470 if (this_is_output_file)
4471 outfiles[input_file_number] = string;
4472 }
4473
4474 /* Use pipe */
4475 obstack_1grow (&obstack, c);
4476 arg_going = 1;
4477 break;
4478
4479 case '\t':
4480 case ' ':
4481 /* Space or tab ends an argument if one is pending. */
4482 if (arg_going)
4483 {
4484 obstack_1grow (&obstack, 0);
4485 string = obstack_finish (&obstack);
4486 if (this_is_library_file)
4487 string = find_file (string);
4488 store_arg (string, delete_this_arg, this_is_output_file);
4489 if (this_is_output_file)
4490 outfiles[input_file_number] = string;
4491 }
4492 /* Reinitialize for a new argument. */
4493 arg_going = 0;
4494 delete_this_arg = 0;
4495 this_is_output_file = 0;
4496 this_is_library_file = 0;
4497 break;
4498
4499 case '%':
4500 switch (c = *p++)
4501 {
4502 case 0:
4503 fatal ("invalid specification! Bug in cc");
4504
4505 case 'b':
4506 obstack_grow (&obstack, input_basename, basename_length);
4507 arg_going = 1;
4508 break;
4509
4510 case 'B':
4511 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4512 arg_going = 1;
4513 break;
4514
4515 case 'd':
4516 delete_this_arg = 2;
4517 break;
4518
4519 /* Dump out the directories specified with LIBRARY_PATH,
4520 followed by the absolute directories
4521 that we search for startfiles. */
4522 case 'D':
4523 {
4524 struct prefix_list *pl = startfile_prefixes.plist;
4525 size_t bufsize = 100;
4526 char *buffer = xmalloc (bufsize);
4527 int idx;
4528
4529 for (; pl; pl = pl->next)
4530 {
4531#ifdef RELATIVE_PREFIX_NOT_LINKDIR
4532 /* Used on systems which record the specified -L dirs
4533 and use them to search for dynamic linking. */
4534 /* Relative directories always come from -B,
4535 and it is better not to use them for searching
4536 at run time. In particular, stage1 loses. */
4537 if (!IS_ABSOLUTE_PATH (pl->prefix))
4538 continue;
4539#endif
4540 /* Try subdirectory if there is one. */
4541 if (multilib_dir != NULL
4542 || (pl->os_multilib && multilib_os_dir != NULL))
4543 {
4544 const char *multi_dir;
4545
4546 multi_dir = pl->os_multilib ? multilib_os_dir
4547 : multilib_dir;
4548 if (machine_suffix && multilib_dir)
4549 {
4550 if (strlen (pl->prefix) + strlen (machine_suffix)
4551 >= bufsize)
4552 bufsize = (strlen (pl->prefix)
4553 + strlen (machine_suffix)) * 2 + 1;
4554 buffer = xrealloc (buffer, bufsize);
4555 strcpy (buffer, pl->prefix);
4556 strcat (buffer, machine_suffix);
4557 if (is_directory (buffer, multilib_dir, 1))
4558 {
4559 do_spec_1 ("-L", 0, NULL);
4560#ifdef SPACE_AFTER_L_OPTION
4561 do_spec_1 (" ", 0, NULL);
4562#endif
4563 do_spec_1 (buffer, 1, NULL);
4564 do_spec_1 (multilib_dir, 1, NULL);
4565 /* Make this a separate argument. */
4566 do_spec_1 (" ", 0, NULL);
4567 }
4568 }
4569 if (!pl->require_machine_suffix)
4570 {
4571 if (is_directory (pl->prefix, multi_dir, 1))
4572 {
4573 do_spec_1 ("-L", 0, NULL);
4574#ifdef SPACE_AFTER_L_OPTION
4575 do_spec_1 (" ", 0, NULL);
4576#endif
4577 do_spec_1 (pl->prefix, 1, NULL);
4578 do_spec_1 (multi_dir, 1, NULL);
4579 /* Make this a separate argument. */
4580 do_spec_1 (" ", 0, NULL);
4581 }
4582 }
4583 }
4584 if (machine_suffix)
4585 {
4586 if (is_directory (pl->prefix, machine_suffix, 1))
4587 {
4588 do_spec_1 ("-L", 0, NULL);
4589#ifdef SPACE_AFTER_L_OPTION
4590 do_spec_1 (" ", 0, NULL);
4591#endif
4592 do_spec_1 (pl->prefix, 1, NULL);
4593 /* Remove slash from machine_suffix. */
4594 if (strlen (machine_suffix) >= bufsize)
4595 bufsize = strlen (machine_suffix) * 2 + 1;
4596 buffer = xrealloc (buffer, bufsize);
4597 strcpy (buffer, machine_suffix);
4598 idx = strlen (buffer);
4599 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4600 buffer[idx - 1] = 0;
4601 do_spec_1 (buffer, 1, NULL);
4602 /* Make this a separate argument. */
4603 do_spec_1 (" ", 0, NULL);
4604 }
4605 }
4606 if (!pl->require_machine_suffix)
4607 {
4608 if (is_directory (pl->prefix, "", 1))
4609 {
4610 do_spec_1 ("-L", 0, NULL);
4611#ifdef SPACE_AFTER_L_OPTION
4612 do_spec_1 (" ", 0, NULL);
4613#endif
4614 /* Remove slash from pl->prefix. */
4615 if (strlen (pl->prefix) >= bufsize)
4616 bufsize = strlen (pl->prefix) * 2 + 1;
4617 buffer = xrealloc (buffer, bufsize);
4618 strcpy (buffer, pl->prefix);
4619 idx = strlen (buffer);
4620 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4621 buffer[idx - 1] = 0;
4622 do_spec_1 (buffer, 1, NULL);
4623 /* Make this a separate argument. */
4624 do_spec_1 (" ", 0, NULL);
4625 }
4626 }
4627 }
4628 free (buffer);
4629 }
4630 break;
4631
4632 case 'e':
4633 /* %efoo means report an error with `foo' as error message
4634 and don't execute any more commands for this file. */
4635 {
4636 const char *q = p;
4637 char *buf;
4638 while (*p != 0 && *p != '\n')
4639 p++;
4640 buf = alloca (p - q + 1);
4641 strncpy (buf, q, p - q);
4642 buf[p - q] = 0;
4643 error ("%s", buf);
4644 return -1;
4645 }
4646 break;
4647 case 'n':
4648 /* %nfoo means report a notice with `foo' on stderr. */
4649 {
4650 const char *q = p;
4651 char *buf;
4652 while (*p != 0 && *p != '\n')
4653 p++;
4654 buf = alloca (p - q + 1);
4655 strncpy (buf, q, p - q);
4656 buf[p - q] = 0;
4657 notice ("%s\n", buf);
4658 if (*p)
4659 p++;
4660 }
4661 break;
4662
4663 case 'j':
4664 {
4665 struct stat st;
4666
4667 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4668 defined, and it is not a directory, and it is
4669 writable, use it. Otherwise, treat this like any
4670 other temporary file. */
4671
4672 if ((!save_temps_flag)
4673 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4674 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4675 {
4676 obstack_grow (&obstack, HOST_BIT_BUCKET,
4677 strlen (HOST_BIT_BUCKET));
4678 delete_this_arg = 0;
4679 arg_going = 1;
4680 break;
4681 }
4682 }
4683 goto create_temp_file;
4684 case '|':
4685 if (use_pipes)
4686 {
4687 obstack_1grow (&obstack, '-');
4688 delete_this_arg = 0;
4689 arg_going = 1;
4690
4691 /* consume suffix */
4692 while (*p == '.' || ISALPHA ((unsigned char) *p))
4693 p++;
4694 if (p[0] == '%' && p[1] == 'O')
4695 p += 2;
4696
4697 break;
4698 }
4699 goto create_temp_file;
4700 case 'm':
4701 if (use_pipes)
4702 {
4703 /* consume suffix */
4704 while (*p == '.' || ISALPHA ((unsigned char) *p))
4705 p++;
4706 if (p[0] == '%' && p[1] == 'O')
4707 p += 2;
4708
4709 break;
4710 }
4711 goto create_temp_file;
4712 case 'g':
4713 case 'u':
4714 case 'U':
4715 create_temp_file:
4716 {
4717 struct temp_name *t;
4718 int suffix_length;
4719 const char *suffix = p;
4720 char *saved_suffix = NULL;
4721
4722 while (*p == '.' || ISALPHA ((unsigned char) *p))
4723 p++;
4724 suffix_length = p - suffix;
4725 if (p[0] == '%' && p[1] == 'O')
4726 {
4727 p += 2;
4728 /* We don't support extra suffix characters after %O. */
4729 if (*p == '.' || ISALPHA ((unsigned char) *p))
4730 abort ();
4731 if (suffix_length == 0)
4732 suffix = TARGET_OBJECT_SUFFIX;
4733 else
4734 {
4735 saved_suffix
4736 = xmalloc (suffix_length
4737 + strlen (TARGET_OBJECT_SUFFIX));
4738 strncpy (saved_suffix, suffix, suffix_length);
4739 strcpy (saved_suffix + suffix_length,
4740 TARGET_OBJECT_SUFFIX);
4741 }
4742 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4743 }
4744
4745 /* If the input_filename has the same suffix specified
4746 for the %g, %u, or %U, and -save-temps is specified,
4747 we could end up using that file as an intermediate
4748 thus clobbering the user's source file (.e.g.,
4749 gcc -save-temps foo.s would clobber foo.s with the
4750 output of cpp0). So check for this condition and
4751 generate a temp file as the intermediate. */
4752
4753 if (save_temps_flag)
4754 {
4755 temp_filename_length = basename_length + suffix_length;
4756 temp_filename = alloca (temp_filename_length + 1);
4757 strncpy ((char *) temp_filename, input_basename, basename_length);
4758 strncpy ((char *) temp_filename + basename_length, suffix,
4759 suffix_length);
4760 *((char *) temp_filename + temp_filename_length) = '\0';
4761 if (strcmp (temp_filename, input_filename) != 0)
4762 {
4763 struct stat st_temp;
4764
4765 /* Note, set_input() resets input_stat_set to 0. */
4766 if (input_stat_set == 0)
4767 {
4768 input_stat_set = stat (input_filename, &input_stat);
4769 if (input_stat_set >= 0)
4770 input_stat_set = 1;
4771 }
4772
4773 /* If we have the stat for the input_filename
4774 and we can do the stat for the temp_filename
4775 then the they could still refer to the same
4776 file if st_dev/st_ino's are the same. */
4777
4778 if (input_stat_set != 1
4779 || stat (temp_filename, &st_temp) < 0
4780 || input_stat.st_dev != st_temp.st_dev
4781 || input_stat.st_ino != st_temp.st_ino)
4782 {
4783 temp_filename = save_string (temp_filename,
4784 temp_filename_length + 1);
4785 obstack_grow (&obstack, temp_filename,
4786 temp_filename_length);
4787 arg_going = 1;
4788 delete_this_arg = 0;
4789 break;
4790 }
4791 }
4792 }
4793
4794 /* See if we already have an association of %g/%u/%U and
4795 suffix. */
4796 for (t = temp_names; t; t = t->next)
4797 if (t->length == suffix_length
4798 && strncmp (t->suffix, suffix, suffix_length) == 0
4799 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
4800 break;
4801
4802 /* Make a new association if needed. %u and %j
4803 require one. */
4804 if (t == 0 || c == 'u' || c == 'j')
4805 {
4806 if (t == 0)
4807 {
4808 t = xmalloc (sizeof (struct temp_name));
4809 t->next = temp_names;
4810 temp_names = t;
4811 }
4812 t->length = suffix_length;
4813 if (saved_suffix)
4814 {
4815 t->suffix = saved_suffix;
4816 saved_suffix = NULL;
4817 }
4818 else
4819 t->suffix = save_string (suffix, suffix_length);
4820 t->unique = (c == 'u' || c == 'U' || c == 'j');
4821 temp_filename = make_temp_file (t->suffix);
4822 temp_filename_length = strlen (temp_filename);
4823 t->filename = temp_filename;
4824 t->filename_length = temp_filename_length;
4825 }
4826
4827 if (saved_suffix)
4828 free (saved_suffix);
4829
4830 obstack_grow (&obstack, t->filename, t->filename_length);
4831 delete_this_arg = 1;
4832 }
4833 arg_going = 1;
4834 break;
4835
4836 case 'i':
4837 if (combine_inputs)
4838 {
4839 for (i = 0; (int) i < n_infiles; i++)
4840 store_arg (infiles[i].name, 0, 0);
4841 }
4842 else
4843 {
4844 obstack_grow (&obstack, input_filename, input_filename_length);
4845 arg_going = 1;
4846 }
4847 break;
4848
4849 case 'I':
4850 {
4851 struct prefix_list *pl = include_prefixes.plist;
4852
4853 if (gcc_exec_prefix)
4854 {
4855 do_spec_1 ("-iprefix", 1, NULL);
4856 /* Make this a separate argument. */
4857 do_spec_1 (" ", 0, NULL);
4858 do_spec_1 (gcc_exec_prefix, 1, NULL);
4859 do_spec_1 (" ", 0, NULL);
4860 }
4861
4862 if (target_system_root_changed ||
4863 (target_system_root && target_sysroot_hdrs_suffix))
4864 {
4865 do_spec_1 ("-isysroot", 1, NULL);
4866 /* Make this a separate argument. */
4867 do_spec_1 (" ", 0, NULL);
4868 do_spec_1 (target_system_root, 1, NULL);
4869 if (target_sysroot_hdrs_suffix)
4870 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
4871 do_spec_1 (" ", 0, NULL);
4872 }
4873
4874 for (; pl; pl = pl->next)
4875 {
4876 do_spec_1 ("-isystem", 1, NULL);
4877 /* Make this a separate argument. */
4878 do_spec_1 (" ", 0, NULL);
4879 do_spec_1 (pl->prefix, 1, NULL);
4880 do_spec_1 (" ", 0, NULL);
4881 }
4882 }
4883 break;
4884
4885 case 'o':
4886 {
4887 int max = n_infiles;
4888 max += lang_specific_extra_outfiles;
4889
4890 for (i = 0; i < max; i++)
4891 if (outfiles[i])
4892 store_arg (outfiles[i], 0, 0);
4893 break;
4894 }
4895
4896 case 'O':
4897 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4898 arg_going = 1;
4899 break;
4900
4901 case 's':
4902 this_is_library_file = 1;
4903 break;
4904
4905 case 'V':
4906 outfiles[input_file_number] = NULL;
4907 break;
4908
4909 case 'w':
4910 this_is_output_file = 1;
4911 break;
4912
4913 case 'W':
4914 {
4915 int cur_index = argbuf_index;
4916 /* Handle the {...} following the %W. */
4917 if (*p != '{')
4918 abort ();
4919 p = handle_braces (p + 1);
4920 if (p == 0)
4921 return -1;
4922 /* End any pending argument. */
4923 if (arg_going)
4924 {
4925 obstack_1grow (&obstack, 0);
4926 string = obstack_finish (&obstack);
4927 if (this_is_library_file)
4928 string = find_file (string);
4929 store_arg (string, delete_this_arg, this_is_output_file);
4930 if (this_is_output_file)
4931 outfiles[input_file_number] = string;
4932 arg_going = 0;
4933 }
4934 /* If any args were output, mark the last one for deletion
4935 on failure. */
4936 if (argbuf_index != cur_index)
4937 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
4938 break;
4939 }
4940
4941 /* %x{OPTION} records OPTION for %X to output. */
4942 case 'x':
4943 {
4944 const char *p1 = p;
4945 char *string;
4946
4947 /* Skip past the option value and make a copy. */
4948 if (*p != '{')
4949 abort ();
4950 while (*p++ != '}')
4951 ;
4952 string = save_string (p1 + 1, p - p1 - 2);
4953
4954 /* See if we already recorded this option. */
4955 for (i = 0; i < n_linker_options; i++)
4956 if (! strcmp (string, linker_options[i]))
4957 {
4958 free (string);
4959 return 0;
4960 }
4961
4962 /* This option is new; add it. */
4963 add_linker_option (string, strlen (string));
4964 }
4965 break;
4966
4967 /* Dump out the options accumulated previously using %x. */
4968 case 'X':
4969 for (i = 0; i < n_linker_options; i++)
4970 {
4971 do_spec_1 (linker_options[i], 1, NULL);
4972 /* Make each accumulated option a separate argument. */
4973 do_spec_1 (" ", 0, NULL);
4974 }
4975 break;
4976
4977 /* Dump out the options accumulated previously using -Wa,. */
4978 case 'Y':
4979 for (i = 0; i < n_assembler_options; i++)
4980 {
4981 do_spec_1 (assembler_options[i], 1, NULL);
4982 /* Make each accumulated option a separate argument. */
4983 do_spec_1 (" ", 0, NULL);
4984 }
4985 break;
4986
4987 /* Dump out the options accumulated previously using -Wp,. */
4988 case 'Z':
4989 for (i = 0; i < n_preprocessor_options; i++)
4990 {
4991 do_spec_1 (preprocessor_options[i], 1, NULL);
4992 /* Make each accumulated option a separate argument. */
4993 do_spec_1 (" ", 0, NULL);
4994 }
4995 break;
4996
4997 /* Here are digits and numbers that just process
4998 a certain constant string as a spec. */
4999
5000 case '1':
5001 value = do_spec_1 (cc1_spec, 0, NULL);
5002 if (value != 0)
5003 return value;
5004 break;
5005
5006 case '2':
5007 value = do_spec_1 (cc1plus_spec, 0, NULL);
5008 if (value != 0)
5009 return value;
5010 break;
5011
5012 case 'a':
5013 value = do_spec_1 (asm_spec, 0, NULL);
5014 if (value != 0)
5015 return value;
5016 break;
5017
5018 case 'A':
5019 value = do_spec_1 (asm_final_spec, 0, NULL);
5020 if (value != 0)
5021 return value;
5022 break;
5023
5024 case 'C':
5025 {
5026 const char *const spec
5027 = (input_file_compiler->cpp_spec
5028 ? input_file_compiler->cpp_spec
5029 : cpp_spec);
5030 value = do_spec_1 (spec, 0, NULL);
5031 if (value != 0)
5032 return value;
5033 }
5034 break;
5035
5036 case 'E':
5037 value = do_spec_1 (endfile_spec, 0, NULL);
5038 if (value != 0)
5039 return value;
5040 break;
5041
5042 case 'l':
5043 value = do_spec_1 (link_spec, 0, NULL);
5044 if (value != 0)
5045 return value;
5046 break;
5047
5048 case 'L':
5049 value = do_spec_1 (lib_spec, 0, NULL);
5050 if (value != 0)
5051 return value;
5052 break;
5053
5054 case 'G':
5055 value = do_spec_1 (libgcc_spec, 0, NULL);
5056 if (value != 0)
5057 return value;
5058 break;
5059
5060 case 'M':
5061 if (multilib_dir && strcmp (multilib_dir, ".") != 0)
5062 {
5063 char *p;
5064 const char *q;
5065 size_t len;
5066
5067 len = strlen (multilib_dir);
5068 obstack_blank (&obstack, len + 1);
5069 p = obstack_next_free (&obstack) - (len + 1);
5070
5071 *p++ = '_';
5072 for (q = multilib_dir; *q ; ++q, ++p)
5073 *p = (IS_DIR_SEPARATOR (*q) ? '_' : *q);
5074 }
5075 break;
5076
5077 case 'R':
5078 /* We assume there is a directory
5079 separator at the end of this string. */
5080 if (target_system_root)
5081 {
5082 obstack_grow (&obstack, target_system_root,
5083 strlen (target_system_root));
5084 if (target_sysroot_suffix)
5085 obstack_grow (&obstack, target_sysroot_suffix,
5086 strlen (target_sysroot_suffix));
5087 }
5088 break;
5089
5090 case 'S':
5091 value = do_spec_1 (startfile_spec, 0, NULL);
5092 if (value != 0)
5093 return value;
5094 break;
5095
5096 /* Here we define characters other than letters and digits. */
5097
5098 case '{':
5099 p = handle_braces (p);
5100 if (p == 0)
5101 return -1;
5102 break;
5103
5104 case ':':
5105 p = handle_spec_function (p);
5106 if (p == 0)
5107 return -1;
5108 break;
5109
5110 case '%':
5111 obstack_1grow (&obstack, '%');
5112 break;
5113
5114 case '.':
5115 {
5116 unsigned len = 0;
5117
5118 while (p[len] && p[len] != ' ' && p[len] != '%')
5119 len++;
5120 suffix_subst = save_string (p - 1, len + 1);
5121 p += len;
5122 }
5123 break;
5124
5125 /* Henceforth ignore the option(s) matching the pattern
5126 after the %<. */
5127 case '<':
5128 {
5129 unsigned len = 0;
5130 int have_wildcard = 0;
5131 int i;
5132
5133 while (p[len] && p[len] != ' ' && p[len] != '\t')
5134 len++;
5135
5136 if (p[len-1] == '*')
5137 have_wildcard = 1;
5138
5139 for (i = 0; i < n_switches; i++)
5140 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5141 && (have_wildcard || switches[i].part1[len] == '\0'))
5142 {
5143 switches[i].live_cond = SWITCH_IGNORE;
5144 switches[i].validated = 1;
5145 }
5146
5147 p += len;
5148 }
5149 break;
5150
5151 case '*':
5152 if (soft_matched_part)
5153 {
5154 do_spec_1 (soft_matched_part, 1, NULL);
5155 do_spec_1 (" ", 0, NULL);
5156 }
5157 else
5158 /* Catch the case where a spec string contains something like
5159 '%{foo:%*}'. ie there is no * in the pattern on the left
5160 hand side of the :. */
5161 error ("spec failure: '%%*' has not been initialized by pattern match");
5162 break;
5163
5164 /* Process a string found as the value of a spec given by name.
5165 This feature allows individual machine descriptions
5166 to add and use their own specs.
5167 %[...] modifies -D options the way %P does;
5168 %(...) uses the spec unmodified. */
5169 case '[':
5170 error ("warning: use of obsolete %%[ operator in specs");
5171 case '(':
5172 {
5173 const char *name = p;
5174 struct spec_list *sl;
5175 int len;
5176
5177 /* The string after the S/P is the name of a spec that is to be
5178 processed. */
5179 while (*p && *p != ')' && *p != ']')
5180 p++;
5181
5182 /* See if it's in the list. */
5183 for (len = p - name, sl = specs; sl; sl = sl->next)
5184 if (sl->name_len == len && !strncmp (sl->name, name, len))
5185 {
5186 name = *(sl->ptr_spec);
5187#ifdef DEBUG_SPECS
5188 notice ("Processing spec %c%s%c, which is '%s'\n",
5189 c, sl->name, (c == '(') ? ')' : ']', name);
5190#endif
5191 break;
5192 }
5193
5194 if (sl)
5195 {
5196 if (c == '(')
5197 {
5198 value = do_spec_1 (name, 0, NULL);
5199 if (value != 0)
5200 return value;
5201 }
5202 else
5203 {
5204 char *x = alloca (strlen (name) * 2 + 1);
5205 char *buf = x;
5206 const char *y = name;
5207 int flag = 0;
5208
5209 /* Copy all of NAME into BUF, but put __ after
5210 every -D and at the end of each arg. */
5211 while (1)
5212 {
5213 if (! strncmp (y, "-D", 2))
5214 {
5215 *x++ = '-';
5216 *x++ = 'D';
5217 *x++ = '_';
5218 *x++ = '_';
5219 y += 2;
5220 flag = 1;
5221 continue;
5222 }
5223 else if (flag
5224 && (*y == ' ' || *y == '\t' || *y == '='
5225 || *y == '}' || *y == 0))
5226 {
5227 *x++ = '_';
5228 *x++ = '_';
5229 flag = 0;
5230 }
5231 if (*y == 0)
5232 break;
5233 else
5234 *x++ = *y++;
5235 }
5236 *x = 0;
5237
5238 value = do_spec_1 (buf, 0, NULL);
5239 if (value != 0)
5240 return value;
5241 }
5242 }
5243
5244 /* Discard the closing paren or bracket. */
5245 if (*p)
5246 p++;
5247 }
5248 break;
5249
5250 default:
5251 error ("spec failure: unrecognized spec option '%c'", c);
5252 break;
5253 }
5254 break;
5255
5256 case '\\':
5257 /* Backslash: treat next character as ordinary. */
5258 c = *p++;
5259
5260 /* Fall through. */
5261 default:
5262 /* Ordinary character: put it into the current argument. */
5263 obstack_1grow (&obstack, c);
5264 arg_going = 1;
5265 }
5266
5267 /* End of string. If we are processing a spec function, we need to
5268 end any pending argument. */
5269 if (processing_spec_function && arg_going)
5270 {
5271 obstack_1grow (&obstack, 0);
5272 string = obstack_finish (&obstack);
5273 if (this_is_library_file)
5274 string = find_file (string);
5275 store_arg (string, delete_this_arg, this_is_output_file);
5276 if (this_is_output_file)
5277 outfiles[input_file_number] = string;
5278 arg_going = 0;
5279 }
5280
5281 return 0;
5282}
5283
5284/* Look up a spec function. */
5285
5286static const struct spec_function *
5287lookup_spec_function (const char *name)
5288{
5289 static const struct spec_function * const spec_function_tables[] =
5290 {
5291 static_spec_functions,
5292 lang_specific_spec_functions,
5293 };
5294 const struct spec_function *sf;
5295 unsigned int i;
5296
5297 for (i = 0; i < ARRAY_SIZE (spec_function_tables); i++)
5298 {
5299 for (sf = spec_function_tables[i]; sf->name != NULL; sf++)
5300 if (strcmp (sf->name, name) == 0)
5301 return sf;
5302 }
5303
5304 return NULL;
5305}
5306
5307/* Evaluate a spec function. */
5308
5309static const char *
5310eval_spec_function (const char *func, const char *args)
5311{
5312 const struct spec_function *sf;
5313 const char *funcval;
5314
5315 /* Saved spec processing context. */
5316 int save_argbuf_index;
5317 int save_argbuf_length;
5318 const char **save_argbuf;
5319
5320 int save_arg_going;
5321 int save_delete_this_arg;
5322 int save_this_is_output_file;
5323 int save_this_is_library_file;
5324 int save_input_from_pipe;
5325 const char *save_suffix_subst;
5326
5327
5328 sf = lookup_spec_function (func);
5329 if (sf == NULL)
5330 fatal ("unknown spec function `%s'", func);
5331
5332 /* Push the spec processing context. */
5333 save_argbuf_index = argbuf_index;
5334 save_argbuf_length = argbuf_length;
5335 save_argbuf = argbuf;
5336
5337 save_arg_going = arg_going;
5338 save_delete_this_arg = delete_this_arg;
5339 save_this_is_output_file = this_is_output_file;
5340 save_this_is_library_file = this_is_library_file;
5341 save_input_from_pipe = input_from_pipe;
5342 save_suffix_subst = suffix_subst;
5343
5344 /* Create a new spec processing context, and build the function
5345 arguments. */
5346
5347 alloc_args ();
5348 if (do_spec_2 (args) < 0)
5349 fatal ("error in args to spec function `%s'", func);
5350
5351 /* argbuf_index is an index for the next argument to be inserted, and
5352 so contains the count of the args already inserted. */
5353
5354 funcval = (*sf->func) (argbuf_index, argbuf);
5355
5356 /* Pop the spec processing context. */
5357 argbuf_index = save_argbuf_index;
5358 argbuf_length = save_argbuf_length;
5359 free (argbuf);
5360 argbuf = save_argbuf;
5361
5362 arg_going = save_arg_going;
5363 delete_this_arg = save_delete_this_arg;
5364 this_is_output_file = save_this_is_output_file;
5365 this_is_library_file = save_this_is_library_file;
5366 input_from_pipe = save_input_from_pipe;
5367 suffix_subst = save_suffix_subst;
5368
5369 return funcval;
5370}
5371
5372/* Handle a spec function call of the form:
5373
5374 %:function(args)
5375
5376 ARGS is processed as a spec in a separate context and split into an
5377 argument vector in the normal fashion. The function returns a string
5378 containing a spec which we then process in the caller's context, or
5379 NULL if no processing is required. */
5380
5381static const char *
5382handle_spec_function (const char *p)
5383{
5384 char *func, *args;
5385 const char *endp, *funcval;
5386 int count;
5387
5388 processing_spec_function++;
5389
5390 /* Get the function name. */
5391 for (endp = p; *endp != '\0'; endp++)
5392 {
5393 if (*endp == '(') /* ) */
5394 break;
5395 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5396 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5397 fatal ("malformed spec function name");
5398 }
5399 if (*endp != '(') /* ) */
5400 fatal ("no arguments for spec function");
5401 func = save_string (p, endp - p);
5402 p = ++endp;
5403
5404 /* Get the arguments. */
5405 for (count = 0; *endp != '\0'; endp++)
5406 {
5407 /* ( */
5408 if (*endp == ')')
5409 {
5410 if (count == 0)
5411 break;
5412 count--;
5413 }
5414 else if (*endp == '(') /* ) */
5415 count++;
5416 }
5417 /* ( */
5418 if (*endp != ')')
5419 fatal ("malformed spec function arguments");
5420 args = save_string (p, endp - p);
5421 p = ++endp;
5422
5423 /* p now points to just past the end of the spec function expression. */
5424
5425 funcval = eval_spec_function (func, args);
5426 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5427 p = NULL;
5428
5429 free (func);
5430 free (args);
5431
5432 processing_spec_function--;
5433
5434 return p;
5435}
5436
5437/* Inline subroutine of handle_braces. Returns true if the current
5438 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5439static inline bool
5440input_suffix_matches (const char *atom, const char *end_atom)
5441{
5442 return (input_suffix
5443 && !strncmp (input_suffix, atom, end_atom - atom)
5444 && input_suffix[end_atom - atom] == '\0');
5445}
5446
5447/* Inline subroutine of handle_braces. Returns true if a switch
5448 matching the atom bracketed by ATOM and END_ATOM appeared on the
5449 command line. */
5450static inline bool
5451switch_matches (const char *atom, const char *end_atom, int starred)
5452{
5453 int i;
5454 int len = end_atom - atom;
5455 int plen = starred ? len : -1;
5456
5457 for (i = 0; i < n_switches; i++)
5458 if (!strncmp (switches[i].part1, atom, len)
5459 && (starred || switches[i].part1[len] == '\0')
5460 && check_live_switch (i, plen))
5461 return true;
5462
5463 return false;
5464}
5465
5466/* Inline subroutine of handle_braces. Mark all of the switches which
5467 match ATOM (extends to END_ATOM; STARRED indicates whether there
5468 was a star after the atom) for later processing. */
5469static inline void
5470mark_matching_switches (const char *atom, const char *end_atom, int starred)
5471{
5472 int i;
5473 int len = end_atom - atom;
5474 int plen = starred ? len : -1;
5475
5476 for (i = 0; i < n_switches; i++)
5477 if (!strncmp (switches[i].part1, atom, len)
5478 && (starred || switches[i].part1[len] == '\0')
5479 && check_live_switch (i, plen))
5480 switches[i].ordering = 1;
5481}
5482
5483/* Inline subroutine of handle_braces. Process all the currently
5484 marked switches through give_switch, and clear the marks. */
5485static inline void
5486process_marked_switches (void)
5487{
5488 int i;
5489
5490 for (i = 0; i < n_switches; i++)
5491 if (switches[i].ordering == 1)
5492 {
5493 switches[i].ordering = 0;
5494 give_switch (i, 0);
5495 }
5496}
5497
5498/* Handle a %{ ... } construct. P points just inside the leading {.
5499 Returns a pointer one past the end of the brace block, or 0
5500 if we call do_spec_1 and that returns -1. */
5501
5502static const char *
5503handle_braces (const char *p)
5504{
5505 const char *atom, *end_atom;
5506 const char *d_atom = NULL, *d_end_atom = NULL;
5507
5508 bool a_is_suffix;
5509 bool a_is_starred;
5510 bool a_is_negated;
5511 bool a_matched;
5512
5513 bool a_must_be_last = false;
5514 bool ordered_set = false;
5515 bool disjunct_set = false;
5516 bool disj_matched = false;
5517 bool disj_starred = true;
5518 bool n_way_choice = false;
5519 bool n_way_matched = false;
5520
5521#define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5522
5523 do
5524 {
5525 if (a_must_be_last)
5526 abort ();
5527
5528 /* Scan one "atom" (S in the description above of %{}, possibly
5529 with !, ., or * modifiers). */
5530 a_matched = a_is_suffix = a_is_starred = a_is_negated = false;
5531
5532 SKIP_WHITE();
5533 if (*p == '!')
5534 p++, a_is_negated = true;
5535
5536 SKIP_WHITE();
5537 if (*p == '.')
5538 p++, a_is_suffix = true;
5539
5540 atom = p;
5541 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5542 || *p == ',' || *p == '.' || *p == '@')
5543 p++;
5544 end_atom = p;
5545
5546 if (*p == '*')
5547 p++, a_is_starred = 1;
5548
5549 SKIP_WHITE();
5550 if (*p == '&' || *p == '}')
5551 {
5552 /* Substitute the switch(es) indicated by the current atom. */
5553 ordered_set = true;
5554 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5555 || atom == end_atom)
5556 abort ();
5557
5558 mark_matching_switches (atom, end_atom, a_is_starred);
5559
5560 if (*p == '}')
5561 process_marked_switches ();
5562 }
5563 else if (*p == '|' || *p == ':')
5564 {
5565 /* Substitute some text if the current atom appears as a switch
5566 or suffix. */
5567 disjunct_set = true;
5568 if (ordered_set)
5569 abort ();
5570
5571 if (atom == end_atom)
5572 {
5573 if (!n_way_choice || disj_matched || *p == '|'
5574 || a_is_negated || a_is_suffix || a_is_starred)
5575 abort ();
5576
5577 /* An empty term may appear as the last choice of an
5578 N-way choice set; it means "otherwise". */
5579 a_must_be_last = true;
5580 disj_matched = !n_way_matched;
5581 disj_starred = false;
5582 }
5583 else
5584 {
5585 if (a_is_suffix && a_is_starred)
5586 abort ();
5587
5588 if (!a_is_starred)
5589 disj_starred = false;
5590
5591 /* Don't bother testing this atom if we already have a
5592 match. */
5593 if (!disj_matched && !n_way_matched)
5594 {
5595 if (a_is_suffix)
5596 a_matched = input_suffix_matches (atom, end_atom);
5597 else
5598 a_matched = switch_matches (atom, end_atom, a_is_starred);
5599
5600 if (a_matched != a_is_negated)
5601 {
5602 disj_matched = true;
5603 d_atom = atom;
5604 d_end_atom = end_atom;
5605 }
5606 }
5607 }
5608
5609 if (*p == ':')
5610 {
5611 /* Found the body, that is, the text to substitute if the
5612 current disjunction matches. */
5613 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5614 disj_matched && !n_way_matched);
5615 if (p == 0)
5616 return 0;
5617
5618 /* If we have an N-way choice, reset state for the next
5619 disjunction. */
5620 if (*p == ';')
5621 {
5622 n_way_choice = true;
5623 n_way_matched |= disj_matched;
5624 disj_matched = false;
5625 disj_starred = true;
5626 d_atom = d_end_atom = NULL;
5627 }
5628 }
5629 }
5630 else
5631 abort ();
5632 }
5633 while (*p++ != '}');
5634
5635 return p;
5636
5637#undef SKIP_WHITE
5638}
5639
5640/* Subroutine of handle_braces. Scan and process a brace substitution body
5641 (X in the description of %{} syntax). P points one past the colon;
5642 ATOM and END_ATOM bracket the first atom which was found to be true
5643 (present) in the current disjunction; STARRED indicates whether all
5644 the atoms in the current disjunction were starred (for syntax validation);
5645 MATCHED indicates whether the disjunction matched or not, and therefore
5646 whether or not the body is to be processed through do_spec_1 or just
5647 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5648 returns -1. */
5649
5650static const char *
5651process_brace_body (const char *p, const char *atom, const char *end_atom,
5652 int starred, int matched)
5653{
5654 const char *body, *end_body;
5655 unsigned int nesting_level;
5656 bool have_subst = false;
5657
5658 /* Locate the closing } or ;, honoring nested braces.
5659 Trim trailing whitespace. */
5660 body = p;
5661 nesting_level = 1;
5662 for (;;)
5663 {
5664 if (*p == '{')
5665 nesting_level++;
5666 else if (*p == '}')
5667 {
5668 if (!--nesting_level)
5669 break;
5670 }
5671 else if (*p == ';' && nesting_level == 1)
5672 break;
5673 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
5674 have_subst = true;
5675 else if (*p == '\0')
5676 abort ();
5677 p++;
5678 }
5679
5680 end_body = p;
5681 while (end_body[-1] == ' ' || end_body[-1] == '\t')
5682 end_body--;
5683
5684 if (have_subst && !starred)
5685 abort ();
5686
5687 if (matched)
5688 {
5689 /* Copy the substitution body to permanent storage and execute it.
5690 If have_subst is false, this is a simple matter of running the
5691 body through do_spec_1... */
5692 char *string = save_string (body, end_body - body);
5693 if (!have_subst)
5694 {
5695 if (do_spec_1 (string, 0, NULL) < 0)
5696 return 0;
5697 }
5698 else
5699 {
5700 /* ... but if have_subst is true, we have to process the
5701 body once for each matching switch, with %* set to the
5702 variant part of the switch. */
5703 unsigned int hard_match_len = end_atom - atom;
5704 int i;
5705
5706 for (i = 0; i < n_switches; i++)
5707 if (!strncmp (switches[i].part1, atom, hard_match_len)
5708 && check_live_switch (i, hard_match_len))
5709 {
5710 if (do_spec_1 (string, 0,
5711 &switches[i].part1[hard_match_len]) < 0)
5712 return 0;
5713 /* Pass any arguments this switch has. */
5714 give_switch (i, 1);
5715 suffix_subst = NULL;
5716 }
5717 }
5718 }
5719
5720 return p;
5721}
5722
5723/* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5724 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5725 spec, or -1 if either exact match or %* is used.
5726
5727 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5728 whose value does not begin with "no-" is obsoleted by the same value
5729 with the "no-", similarly for a switch with the "no-" prefix. */
5730
5731static int
5732check_live_switch (int switchnum, int prefix_length)
5733{
5734 const char *name = switches[switchnum].part1;
5735 int i;
5736
5737 /* In the common case of {<at-most-one-letter>*}, a negating
5738 switch would always match, so ignore that case. We will just
5739 send the conflicting switches to the compiler phase. */
5740 if (prefix_length >= 0 && prefix_length <= 1)
5741 return 1;
5742
5743 /* If we already processed this switch and determined if it was
5744 live or not, return our past determination. */
5745 if (switches[switchnum].live_cond != 0)
5746 return switches[switchnum].live_cond > 0;
5747
5748 /* Now search for duplicate in a manner that depends on the name. */
5749 switch (*name)
5750 {
5751 case 'O':
5752 for (i = switchnum + 1; i < n_switches; i++)
5753 if (switches[i].part1[0] == 'O')
5754 {
5755 switches[switchnum].validated = 1;
5756 switches[switchnum].live_cond = SWITCH_FALSE;
5757 return 0;
5758 }
5759 break;
5760
5761 case 'W': case 'f': case 'm':
5762 if (! strncmp (name + 1, "no-", 3))
5763 {
5764 /* We have Xno-YYY, search for XYYY. */
5765 for (i = switchnum + 1; i < n_switches; i++)
5766 if (switches[i].part1[0] == name[0]
5767 && ! strcmp (&switches[i].part1[1], &name[4]))
5768 {
5769 switches[switchnum].validated = 1;
5770 switches[switchnum].live_cond = SWITCH_FALSE;
5771 return 0;
5772 }
5773 }
5774 else
5775 {
5776 /* We have XYYY, search for Xno-YYY. */
5777 for (i = switchnum + 1; i < n_switches; i++)
5778 if (switches[i].part1[0] == name[0]
5779 && switches[i].part1[1] == 'n'
5780 && switches[i].part1[2] == 'o'
5781 && switches[i].part1[3] == '-'
5782 && !strcmp (&switches[i].part1[4], &name[1]))
5783 {
5784 switches[switchnum].validated = 1;
5785 switches[switchnum].live_cond = SWITCH_FALSE;
5786 return 0;
5787 }
5788 }
5789 break;
5790 }
5791
5792 /* Otherwise the switch is live. */
5793 switches[switchnum].live_cond = SWITCH_LIVE;
5794 return 1;
5795}
5796
5797/* Pass a switch to the current accumulating command
5798 in the same form that we received it.
5799 SWITCHNUM identifies the switch; it is an index into
5800 the vector of switches gcc received, which is `switches'.
5801 This cannot fail since it never finishes a command line.
5802
5803 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5804
5805static void
5806give_switch (int switchnum, int omit_first_word)
5807{
5808 if (switches[switchnum].live_cond == SWITCH_IGNORE)
5809 return;
5810
5811 if (!omit_first_word)
5812 {
5813 do_spec_1 ("-", 0, NULL);
5814 do_spec_1 (switches[switchnum].part1, 1, NULL);
5815 }
5816
5817 if (switches[switchnum].args != 0)
5818 {
5819 const char **p;
5820 for (p = switches[switchnum].args; *p; p++)
5821 {
5822 const char *arg = *p;
5823
5824 do_spec_1 (" ", 0, NULL);
5825 if (suffix_subst)
5826 {
5827 unsigned length = strlen (arg);
5828 int dot = 0;
5829
5830 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5831 if (arg[length] == '.')
5832 {
5833 ((char *)arg)[length] = 0;
5834 dot = 1;
5835 break;
5836 }
5837 do_spec_1 (arg, 1, NULL);
5838 if (dot)
5839 ((char *)arg)[length] = '.';
5840 do_spec_1 (suffix_subst, 1, NULL);
5841 }
5842 else
5843 do_spec_1 (arg, 1, NULL);
5844 }
5845 }
5846
5847 do_spec_1 (" ", 0, NULL);
5848 switches[switchnum].validated = 1;
5849}
5850
5851/* Search for a file named NAME trying various prefixes including the
5852 user's -B prefix and some standard ones.
5853 Return the absolute file name found. If nothing is found, return NAME. */
5854
5855static const char *
5856find_file (const char *name)
5857{
5858 char *newname;
5859
5860 /* Try multilib_dir if it is defined. */
5861 if (multilib_os_dir != NULL)
5862 {
5863 newname = find_a_file (&startfile_prefixes, name, R_OK, 1);
5864
5865 /* If we don't find it in the multi library dir, then fall
5866 through and look for it in the normal places. */
5867 if (newname != NULL)
5868 return newname;
5869 }
5870
5871 newname = find_a_file (&startfile_prefixes, name, R_OK, 0);
5872 return newname ? newname : name;
5873}
5874
5875/* Determine whether a directory exists. If LINKER, return 0 for
5876 certain fixed names not needed by the linker. If not LINKER, it is
5877 only important to return 0 if the host machine has a small ARG_MAX
5878 limit. */
5879
5880static int
5881is_directory (const char *path1, const char *path2, int linker)
5882{
5883 int len1 = strlen (path1);
5884 int len2 = strlen (path2);
5885 char *path = alloca (3 + len1 + len2);
5886 char *cp;
5887 struct stat st;
5888
5889#ifndef SMALL_ARG_MAX
5890 if (! linker)
5891 return 1;
5892#endif
5893
5894 /* Construct the path from the two parts. Ensure the string ends with "/.".
5895 The resulting path will be a directory even if the given path is a
5896 symbolic link. */
5897 memcpy (path, path1, len1);
5898 memcpy (path + len1, path2, len2);
5899 cp = path + len1 + len2;
5900 if (!IS_DIR_SEPARATOR (cp[-1]))
5901 *cp++ = DIR_SEPARATOR;
5902 *cp++ = '.';
5903 *cp = '\0';
5904
5905#ifndef FREEBSD_NATIVE
5906 /* Exclude directories that the linker is known to search. */
5907 if (linker
5908 && ((cp - path == 6
5909 && strcmp (path, concat (dir_separator_str, "lib",
5910 dir_separator_str, ".", NULL)) == 0)
5911 || (cp - path == 10
5912 && strcmp (path, concat (dir_separator_str, "usr",
5913 dir_separator_str, "lib",
5914 dir_separator_str, ".", NULL)) == 0)))
5915 return 0;
5916#endif /* FREEBSD_NATIVE */
5917
5918 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5919}
5920
5921/* Set up the various global variables to indicate that we're processing
5922 the input file named FILENAME. */
5923
5924void
5925set_input (const char *filename)
5926{
5927 const char *p;
5928
5929 input_filename = filename;
5930 input_filename_length = strlen (input_filename);
5931
5932 input_basename = input_filename;
5933#ifdef HAVE_DOS_BASED_FILE_SYSTEM
5934 /* Skip drive name so 'x:foo' is handled properly. */
5935 if (input_basename[1] == ':')
5936 input_basename += 2;
5937#endif
5938 for (p = input_basename; *p; p++)
5939 if (IS_DIR_SEPARATOR (*p))
5940 input_basename = p + 1;
5941
5942 /* Find a suffix starting with the last period,
5943 and set basename_length to exclude that suffix. */
5944 basename_length = strlen (input_basename);
5945 suffixed_basename_length = basename_length;
5946 p = input_basename + basename_length;
5947 while (p != input_basename && *p != '.')
5948 --p;
5949 if (*p == '.' && p != input_basename)
5950 {
5951 basename_length = p - input_basename;
5952 input_suffix = p + 1;
5953 }
5954 else
5955 input_suffix = "";
5956
5957 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5958 we will need to do a stat on the input_filename. The
5959 INPUT_STAT_SET signals that the stat is needed. */
5960 input_stat_set = 0;
5961}
5962
5963/* On fatal signals, delete all the temporary files. */
5964
5965static void
5966fatal_error (int signum)
5967{
5968 signal (signum, SIG_DFL);
5969 delete_failure_queue ();
5970 delete_temp_files ();
5971 /* Get the same signal again, this time not handled,
5972 so its normal effect occurs. */
5973 kill (getpid (), signum);
5974}
5975
5976extern int main (int, const char **);
5977
5978int
5979main (int argc, const char **argv)
5980{
5981 size_t i;
5982 int value;
5983 int linker_was_run = 0;
5984 int num_linker_inputs = 0;
5985 char *explicit_link_files;
5986 char *specs_file;
5987 const char *p;
5988 struct user_specs *uptr;
5989
5990 p = argv[0] + strlen (argv[0]);
5991 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
5992 --p;
5993 programname = p;
5994
5995 xmalloc_set_program_name (programname);
5996
5997#ifdef GCC_DRIVER_HOST_INITIALIZATION
5998 /* Perform host dependent initialization when needed. */
5999 GCC_DRIVER_HOST_INITIALIZATION;
6000#endif
6001
6002 gcc_init_libintl ();
6003
6004 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
6005 signal (SIGINT, fatal_error);
6006#ifdef SIGHUP
6007 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
6008 signal (SIGHUP, fatal_error);
6009#endif
6010 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
6011 signal (SIGTERM, fatal_error);
6012#ifdef SIGPIPE
6013 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
6014 signal (SIGPIPE, fatal_error);
6015#endif
6016#ifdef SIGCHLD
6017 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6018 receive the signal. A different setting is inheritable */
6019 signal (SIGCHLD, SIG_DFL);
6020#endif
6021
6022 /* Allocate the argument vector. */
6023 alloc_args ();
6024
6025 obstack_init (&obstack);
6026
6027 /* Build multilib_select, et. al from the separate lines that make up each
6028 multilib selection. */
6029 {
6030 const char *const *q = multilib_raw;
6031 int need_space;
6032
6033 obstack_init (&multilib_obstack);
6034 while ((p = *q++) != (char *) 0)
6035 obstack_grow (&multilib_obstack, p, strlen (p));
6036
6037 obstack_1grow (&multilib_obstack, 0);
6038 multilib_select = obstack_finish (&multilib_obstack);
6039
6040 q = multilib_matches_raw;
6041 while ((p = *q++) != (char *) 0)
6042 obstack_grow (&multilib_obstack, p, strlen (p));
6043
6044 obstack_1grow (&multilib_obstack, 0);
6045 multilib_matches = obstack_finish (&multilib_obstack);
6046
6047 q = multilib_exclusions_raw;
6048 while ((p = *q++) != (char *) 0)
6049 obstack_grow (&multilib_obstack, p, strlen (p));
6050
6051 obstack_1grow (&multilib_obstack, 0);
6052 multilib_exclusions = obstack_finish (&multilib_obstack);
6053
6054 need_space = FALSE;
6055 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
6056 {
6057 if (need_space)
6058 obstack_1grow (&multilib_obstack, ' ');
6059 obstack_grow (&multilib_obstack,
6060 multilib_defaults_raw[i],
6061 strlen (multilib_defaults_raw[i]));
6062 need_space = TRUE;
6063 }
6064
6065 obstack_1grow (&multilib_obstack, 0);
6066 multilib_defaults = obstack_finish (&multilib_obstack);
6067 }
6068
6069 /* Set up to remember the pathname of gcc and any options
6070 needed for collect. We use argv[0] instead of programname because
6071 we need the complete pathname. */
6072 obstack_init (&collect_obstack);
6073 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6074 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6075 putenv (obstack_finish (&collect_obstack));
6076
6077#ifdef INIT_ENVIRONMENT
6078 /* Set up any other necessary machine specific environment variables. */
6079 putenv (INIT_ENVIRONMENT);
6080#endif
6081
6082 /* Make a table of what switches there are (switches, n_switches).
6083 Make a table of specified input files (infiles, n_infiles).
6084 Decode switches that are handled locally. */
6085
6086 process_command (argc, argv);
6087
6088 /* Initialize the vector of specs to just the default.
6089 This means one element containing 0s, as a terminator. */
6090
6091 compilers = xmalloc (sizeof default_compilers);
6092 memcpy (compilers, default_compilers, sizeof default_compilers);
6093 n_compilers = n_default_compilers;
6094
6095 /* Read specs from a file if there is one. */
6096
6097#ifdef FREEBSD_NATIVE
6098 just_machine_suffix = "";
6099#else /* FREEBSD_NATIVE */
6100 machine_suffix = concat (spec_machine, dir_separator_str,
6101 spec_version, dir_separator_str, NULL);
6102 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6103#endif /* FREEBSD_NATIVE */
6104
6105 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, 0);
6106 /* Read the specs file unless it is a default one. */
6107 if (specs_file != 0 && strcmp (specs_file, "specs"))
6108 read_specs (specs_file, TRUE);
6109 else
6110 init_spec ();
6111
6112 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6113 for any override of as, ld and libraries. */
6114 specs_file = (char *) alloca (strlen (FBSD_DATA_PREFIX)
6115 + strlen (just_machine_suffix)
6116 + sizeof ("specs"));
6117
6118 strcpy (specs_file, FBSD_DATA_PREFIX);
6119 strcat (specs_file, just_machine_suffix);
6120 strcat (specs_file, "specs");
6121 if (access (specs_file, R_OK) == 0)
6122 read_specs (specs_file, TRUE);
6123
6124 /* Process any configure-time defaults specified for the command line
6125 options, via OPTION_DEFAULT_SPECS. */
6126 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6127 do_option_spec (option_default_specs[i].name,
6128 option_default_specs[i].spec);
6129
6130 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6131 of the command line. */
6132
6133 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6134 do_self_spec (driver_self_specs[i]);
6135
6136 /* If not cross-compiling, look for executables in the standard
6137 places. */
6138 if (*cross_compile == '0')
6139 {
6140 if (*md_exec_prefix)
6141 {
6142 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6143 PREFIX_PRIORITY_LAST, 0, NULL, 0);
6144 }
6145 }
6146
6147 /* Process sysroot_suffix_spec. */
6148 if (*sysroot_suffix_spec != 0
6149 && do_spec_2 (sysroot_suffix_spec) == 0)
6150 {
6151 if (argbuf_index > 1)
6152 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC.");
6153 else if (argbuf_index == 1)
6154 target_sysroot_suffix = xstrdup (argbuf[argbuf_index -1]);
6155 }
6156
6157 /* Process sysroot_hdrs_suffix_spec. */
6158 if (*sysroot_hdrs_suffix_spec != 0
6159 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6160 {
6161 if (argbuf_index > 1)
6162 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC.");
6163 else if (argbuf_index == 1)
6164 target_sysroot_hdrs_suffix = xstrdup (argbuf[argbuf_index -1]);
6165 }
6166
6167 /* Look for startfiles in the standard places. */
6168 if (*startfile_prefix_spec != 0
6169 && do_spec_2 (startfile_prefix_spec) == 0
6170 && do_spec_1 (" ", 0, NULL) == 0)
6171 {
6172 int ndx;
6173 for (ndx = 0; ndx < argbuf_index; ndx++)
6174 add_sysrooted_prefix (&startfile_prefixes, argbuf[ndx], "BINUTILS",
6175 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6176 }
6177 /* We should eventually get rid of all these and stick to
6178 startfile_prefix_spec exclusively. */
6179 else if (*cross_compile == '0' || target_system_root)
6180 {
6181 if (*md_exec_prefix)
6182 add_sysrooted_prefix (&startfile_prefixes, md_exec_prefix, "GCC",
6183 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6184
6185 if (*md_startfile_prefix)
6186 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6187 "GCC", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6188
6189 if (*md_startfile_prefix_1)
6190 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6191 "GCC", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6192
6193 /* If standard_startfile_prefix is relative, base it on
6194 standard_exec_prefix. This lets us move the installed tree
6195 as a unit. If GCC_EXEC_PREFIX is defined, base
6196 standard_startfile_prefix on that as well.
6197
6198 If the prefix is relative, only search it for native compilers;
6199 otherwise we will search a directory containing host libraries. */
6200 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
6201 add_sysrooted_prefix (&startfile_prefixes,
6202 standard_startfile_prefix, "BINUTILS",
6203 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6204 else if (*cross_compile == '0')
6205 {
6206 if (gcc_exec_prefix)
6207 add_prefix (&startfile_prefixes,
6208 concat (gcc_exec_prefix, machine_suffix,
6209 standard_startfile_prefix, NULL),
6210 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
6211 add_prefix (&startfile_prefixes,
6212 concat (standard_exec_prefix,
6213 machine_suffix,
6214 standard_startfile_prefix, NULL),
6215 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
6216 }
6217
6218#ifndef FREEBSD_NATIVE
6219 add_sysrooted_prefix (&startfile_prefixes, standard_startfile_prefix_1,
6220 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6221 add_sysrooted_prefix (&startfile_prefixes, standard_startfile_prefix_2,
6222 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6223#endif /* not FREEBSD_NATIVE */
6224#if 0 /* Can cause surprises, and one can use -B./ instead. */
6225 add_prefix (&startfile_prefixes, "./", NULL,
6226 PREFIX_PRIORITY_LAST, 1, NULL, 0);
6227#endif
6228 }
6229
6230 /* Process any user specified specs in the order given on the command
6231 line. */
6232 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6233 {
6234 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6235 R_OK, 0);
6236 read_specs (filename ? filename : uptr->filename, FALSE);
6237 }
6238
6239 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6240 if (gcc_exec_prefix)
6241 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6242 spec_version, dir_separator_str, NULL);
6243
6244 /* Now we have the specs.
6245 Set the `valid' bits for switches that match anything in any spec. */
6246
6247 validate_all_switches ();
6248
6249 /* Now that we have the switches and the specs, set
6250 the subdirectory based on the options. */
6251 set_multilib_dir ();
6252
6253 /* Warn about any switches that no pass was interested in. */
6254
6255 for (i = 0; (int) i < n_switches; i++)
6256 if (! switches[i].validated)
6257 error ("unrecognized option `-%s'", switches[i].part1);
6258
6259 /* Obey some of the options. */
6260
6261 if (print_search_dirs)
6262 {
6263 printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix);
6264 printf (_("programs: %s\n"), build_search_list (&exec_prefixes, "", 0));
6265 printf (_("libraries: %s\n"), build_search_list (&startfile_prefixes, "", 0));
6266 return (0);
6267 }
6268
6269 if (print_file_name)
6270 {
6271 printf ("%s\n", find_file (print_file_name));
6272 return (0);
6273 }
6274
6275 if (print_prog_name)
6276 {
6277 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6278 printf ("%s\n", (newname ? newname : print_prog_name));
6279 return (0);
6280 }
6281
6282 if (print_multi_lib)
6283 {
6284 print_multilib_info ();
6285 return (0);
6286 }
6287
6288 if (print_multi_directory)
6289 {
6290 if (multilib_dir == NULL)
6291 printf (".\n");
6292 else
6293 printf ("%s\n", multilib_dir);
6294 return (0);
6295 }
6296
6297 if (print_multi_os_directory)
6298 {
6299 if (multilib_os_dir == NULL)
6300 printf (".\n");
6301 else
6302 printf ("%s\n", multilib_os_dir);
6303 return (0);
6304 }
6305
6306 if (target_help_flag)
6307 {
6308 /* Print if any target specific options. */
6309
6310 /* We do not exit here. Instead we have created a fake input file
6311 called 'target-dummy' which needs to be compiled, and we pass this
6312 on to the various sub-processes, along with the --target-help
6313 switch. */
6314 }
6315
6316 if (print_help_list)
6317 {
6318 display_help ();
6319
6320 if (! verbose_flag)
6321 {
6322 printf (_("\nFor bug reporting instructions, please see:\n"));
6323 printf ("%s.\n", bug_report_url);
6324
6325 return (0);
6326 }
6327
6328 /* We do not exit here. Instead we have created a fake input file
6329 called 'help-dummy' which needs to be compiled, and we pass this
6330 on the various sub-processes, along with the --help switch. */
6331 }
6332
6333 if (verbose_flag)
6334 {
6335 int n;
6336 const char *thrmod;
6337
6338 notice ("Configured with: %s\n", configuration_arguments);
6339
6340#ifdef THREAD_MODEL_SPEC
6341 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6342 but there's no point in doing all this processing just to get
6343 thread_model back. */
6344 obstack_init (&obstack);
6345 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6346 obstack_1grow (&obstack, '\0');
6347 thrmod = obstack_finish (&obstack);
6348#else
6349 thrmod = thread_model;
6350#endif
6351
6352 notice ("Thread model: %s\n", thrmod);
6353
6354 /* compiler_version is truncated at the first space when initialized
6355 from version string, so truncate version_string at the first space
6356 before comparing. */
6357 for (n = 0; version_string[n]; n++)
6358 if (version_string[n] == ' ')
6359 break;
6360
6361 if (! strncmp (version_string, compiler_version, n)
6362 && compiler_version[n] == 0)
6363 notice ("gcc version %s\n", version_string);
6364 else
6365 notice ("gcc driver version %s executing gcc version %s\n",
6366 version_string, compiler_version);
6367
6368 if (n_infiles == 0)
6369 return (0);
6370 }
6371
6372 if (n_infiles == added_libraries)
6373 fatal ("No input files specified");
6374
6375 /* Make a place to record the compiler output file names
6376 that correspond to the input files. */
6377
6378 i = n_infiles;
6379 i += lang_specific_extra_outfiles;
6380 outfiles = xcalloc (i, sizeof (char *));
6381
6382 /* Record which files were specified explicitly as link input. */
6383
6384 explicit_link_files = xcalloc (1, n_infiles);
6385
6386 if (combine_inputs)
6387 {
6388 int lang_n_infiles = 0;
6389 for (i = 0; (int) i < n_infiles; i++)
6390 {
6391 const char *name = infiles[i].name;
6392 struct compiler *compiler
6393 = lookup_compiler (name, strlen (name), infiles[i].language);
6394 if (compiler == NULL)
6395 error ("%s: linker input file unused because linking not done",
6396 name);
6397 else if (lang_n_infiles > 0 && compiler != input_file_compiler)
6398 fatal ("cannot specify -o with -c or -S and multiple languages");
6399 else
6400 {
6401 lang_n_infiles++;
6402 input_file_compiler = compiler;
6403 }
6404 }
6405 }
6406
6407 for (i = 0; (int) i < (combine_inputs ? 1 : n_infiles); i++)
6408 {
6409 int this_file_error = 0;
6410
6411 /* Tell do_spec what to substitute for %i. */
6412
6413 input_file_number = i;
6414 set_input (infiles[i].name);
6415
6416 /* Use the same thing in %o, unless cp->spec says otherwise. */
6417
6418 outfiles[i] = input_filename;
6419
6420 /* Figure out which compiler from the file's suffix. */
6421
6422 if (! combine_inputs)
6423 input_file_compiler
6424 = lookup_compiler (infiles[i].name, input_filename_length,
6425 infiles[i].language);
6426
6427 if (input_file_compiler)
6428 {
6429 /* Ok, we found an applicable compiler. Run its spec. */
6430
6431 if (input_file_compiler->spec[0] == '#')
6432 {
6433 error ("%s: %s compiler not installed on this system",
6434 input_filename, &input_file_compiler->spec[1]);
6435 this_file_error = 1;
6436 }
6437 else
6438 {
6439 value = do_spec (input_file_compiler->spec);
6440 if (value < 0)
6441 this_file_error = 1;
6442 }
6443 }
6444
6445 /* If this file's name does not contain a recognized suffix,
6446 record it as explicit linker input. */
6447
6448 else
6449 explicit_link_files[i] = 1;
6450
6451 /* Clear the delete-on-failure queue, deleting the files in it
6452 if this compilation failed. */
6453
6454 if (this_file_error)
6455 {
6456 delete_failure_queue ();
6457 error_count++;
6458 }
6459 /* If this compilation succeeded, don't delete those files later. */
6460 clear_failure_queue ();
6461 }
6462
6463 /* Reset the output file name to the first input file name, for use
6464 with %b in LINK_SPEC on a target that prefers not to emit a.out
6465 by default. */
6466 if (n_infiles > 0)
6467 set_input (infiles[0].name);
6468
6469 if (error_count == 0)
6470 {
6471 /* Make sure INPUT_FILE_NUMBER points to first available open
6472 slot. */
6473 input_file_number = n_infiles;
6474 if (lang_specific_pre_link ())
6475 error_count++;
6476 }
6477
6478 /* Determine if there are any linker input files. */
6479 num_linker_inputs = 0;
6480 for (i = 0; (int) i < n_infiles; i++)
6481 if (explicit_link_files[i] || outfiles[i] != NULL)
6482 num_linker_inputs++;
6483
6484 /* Run ld to link all the compiler output files. */
6485
6486 if (num_linker_inputs > 0 && error_count == 0)
6487 {
6488 int tmp = execution_count;
6489
6490 /* We'll use ld if we can't find collect2. */
6491 if (! strcmp (linker_name_spec, "collect2"))
6492 {
6493 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, 0);
6494 if (s == NULL)
6495 linker_name_spec = "ld";
6496 }
6497 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6498 for collect. */
6499 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH");
6500 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV);
6501
6502 value = do_spec (link_command_spec);
6503 if (value < 0)
6504 error_count = 1;
6505 linker_was_run = (tmp != execution_count);
6506 }
6507
6508 /* If options said don't run linker,
6509 complain about input files to be given to the linker. */
6510
6511 if (! linker_was_run && error_count == 0)
6512 for (i = 0; (int) i < n_infiles; i++)
6513 if (explicit_link_files[i])
6514 error ("%s: linker input file unused because linking not done",
6515 outfiles[i]);
6516
6517 /* Delete some or all of the temporary files we made. */
6518
6519 if (error_count)
6520 delete_failure_queue ();
6521 delete_temp_files ();
6522
6523 if (print_help_list)
6524 {
6525 printf (("\nFor bug reporting instructions, please see:\n"));
6526 printf ("%s\n", bug_report_url);
6527 }
6528
6529 return (signal_count != 0 ? 2
6530 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
6531 : 0);
6532}
6533
6534/* Find the proper compilation spec for the file name NAME,
6535 whose length is LENGTH. LANGUAGE is the specified language,
6536 or 0 if this file is to be passed to the linker. */
6537
6538static struct compiler *
6539lookup_compiler (const char *name, size_t length, const char *language)
6540{
6541 struct compiler *cp;
6542
6543 /* If this was specified by the user to be a linker input, indicate that. */
6544 if (language != 0 && language[0] == '*')
6545 return 0;
6546
6547 /* Otherwise, look for the language, if one is spec'd. */
6548 if (language != 0)
6549 {
6550 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6551 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6552 return cp;
6553
6554 error ("language %s not recognized", language);
6555 return 0;
6556 }
6557
6558 /* Look for a suffix. */
6559 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6560 {
6561 if (/* The suffix `-' matches only the file name `-'. */
6562 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6563 || (strlen (cp->suffix) < length
6564 /* See if the suffix matches the end of NAME. */
6565 && !strcmp (cp->suffix,
6566 name + length - strlen (cp->suffix))
6567 ))
6568 break;
6569 }
6570
6571#if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6572 /* look again, but case-insensitively this time. */
6573 if (cp < compilers)
6574 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6575 {
6576 if (/* The suffix `-' matches only the file name `-'. */
6577 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6578 || (strlen (cp->suffix) < length
6579 /* See if the suffix matches the end of NAME. */
6580 && ((!strcmp (cp->suffix,
6581 name + length - strlen (cp->suffix))
6582 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6583 && !strcasecmp (cp->suffix,
6584 name + length - strlen (cp->suffix)))
6585 ))
6586 break;
6587 }
6588#endif
6589
6590 if (cp >= compilers)
6591 {
6592 if (cp->spec[0] != '@')
6593 /* A non-alias entry: return it. */
6594 return cp;
6595
6596 /* An alias entry maps a suffix to a language.
6597 Search for the language; pass 0 for NAME and LENGTH
6598 to avoid infinite recursion if language not found. */
6599 return lookup_compiler (NULL, 0, cp->spec + 1);
6600 }
6601 return 0;
6602}
6603
6604static char *
6605save_string (const char *s, int len)
6606{
6607 char *result = xmalloc (len + 1);
6608
6609 memcpy (result, s, len);
6610 result[len] = 0;
6611 return result;
6612}
6613
6614void
6615pfatal_with_name (const char *name)
6616{
6617 perror_with_name (name);
6618 delete_temp_files ();
6619 exit (1);
6620}
6621
6622static void
6623perror_with_name (const char *name)
6624{
6625 error ("%s: %s", name, xstrerror (errno));
6626}
6627
6628static void
6629pfatal_pexecute (const char *errmsg_fmt, const char *errmsg_arg)
6630{
6631 if (errmsg_arg)
6632 {
6633 int save_errno = errno;
6634
6635 /* Space for trailing '\0' is in %s. */
6636 char *msg = xmalloc (strlen (errmsg_fmt) + strlen (errmsg_arg));
6637 sprintf (msg, errmsg_fmt, errmsg_arg);
6638 errmsg_fmt = msg;
6639
6640 errno = save_errno;
6641 }
6642
6643 pfatal_with_name (errmsg_fmt);
6644}
6645
6646/* Output an error message and exit. */
6647
6648void
6649fancy_abort (void)
6650{
6651 fatal ("internal gcc abort");
6652}
6653
6654/* Output an error message and exit. */
6655
6656void
6657fatal (const char *msgid, ...)
6658{
6659 va_list ap;
6660
6661 va_start (ap, msgid);
6662
6663 fprintf (stderr, "%s: ", programname);
6664 vfprintf (stderr, _(msgid), ap);
6665 va_end (ap);
6666 fprintf (stderr, "\n");
6667 delete_temp_files ();
6668 exit (1);
6669}
6670
6671void
6672error (const char *msgid, ...)
6673{
6674 va_list ap;
6675
6676 va_start (ap, msgid);
6677 fprintf (stderr, "%s: ", programname);
6678 vfprintf (stderr, _(msgid), ap);
6679 va_end (ap);
6680
6681 fprintf (stderr, "\n");
6682}
6683
6684static void
6685notice (const char *msgid, ...)
6686{
6687 va_list ap;
6688
6689 va_start (ap, msgid);
6690 vfprintf (stderr, _(msgid), ap);
6691 va_end (ap);
6692}
6693
6694static inline void
6695validate_switches_from_spec (const char *spec)
6696{
6697 const char *p = spec;
6698 char c;
6699 while ((c = *p++))
6700 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
6701 /* We have a switch spec. */
6702 p = validate_switches (p + 1);
6703}
6704
6705static void
6706validate_all_switches (void)
6707{
6708 struct compiler *comp;
6709 struct spec_list *spec;
6710
6711 for (comp = compilers; comp->spec; comp++)
6712 validate_switches_from_spec (comp->spec);
6713
6714 /* Look through the linked list of specs read from the specs file. */
6715 for (spec = specs; spec; spec = spec->next)
6716 validate_switches_from_spec (*spec->ptr_spec);
6717
6718 validate_switches_from_spec (link_command_spec);
6719}
6720
6721/* Look at the switch-name that comes after START
6722 and mark as valid all supplied switches that match it. */
6723
6724static const char *
6725validate_switches (const char *start)
6726{
6727 const char *p = start;
6728 const char *atom;
6729 size_t len;
6730 int i;
6731 bool suffix = false;
6732 bool starred = false;
6733
6734#define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
6735
6736next_member:
6737 SKIP_WHITE ();
6738
6739 if (*p == '!')
6740 p++;
6741
6742 SKIP_WHITE ();
6743 if (*p == '.')
6744 suffix = true, p++;
6745
6746 atom = p;
6747 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
6748 || *p == ',' || *p == '.' || *p == '@')
6749 p++;
6750 len = p - atom;
6751
6752 if (*p == '*')
6753 starred = true, p++;
6754
6755 SKIP_WHITE ();
6756
6757 if (!suffix)
6758 {
6759 /* Mark all matching switches as valid. */
6760 for (i = 0; i < n_switches; i++)
6761 if (!strncmp (switches[i].part1, atom, len)
6762 && (starred || switches[i].part1[len] == 0))
6763 switches[i].validated = 1;
6764 }
6765
6766 if (*p) p++;
6767 if (*p && (p[-1] == '|' || p[-1] == '&'))
6768 goto next_member;
6769
6770 if (*p && p[-1] == ':')
6771 {
6772 while (*p && *p != ';' && *p != '}')
6773 {
6774 if (*p == '%')
6775 {
6776 p++;
6777 if (*p == '{' || *p == '<')
6778 p = validate_switches (p+1);
6779 else if (p[0] == 'W' && p[1] == '{')
6780 p = validate_switches (p+2);
6781 }
6782 else
6783 p++;
6784 }
6785
6786 if (*p) p++;
6787 if (*p && p[-1] == ';')
6788 goto next_member;
6789 }
6790
6791 return p;
6792#undef SKIP_WHITE
6793}
6794
6795struct mdswitchstr
6796{
6797 const char *str;
6798 int len;
6799};
6800
6801static struct mdswitchstr *mdswitches;
6802static int n_mdswitches;
6803
6804/* Check whether a particular argument was used. The first time we
6805 canonicalize the switches to keep only the ones we care about. */
6806
6807static int
6808used_arg (const char *p, int len)
6809{
6810 struct mswitchstr
6811 {
6812 const char *str;
6813 const char *replace;
6814 int len;
6815 int rep_len;
6816 };
6817
6818 static struct mswitchstr *mswitches;
6819 static int n_mswitches;
6820 int i, j;
6821
6822 if (!mswitches)
6823 {
6824 struct mswitchstr *matches;
6825 const char *q;
6826 int cnt = 0;
6827
6828 /* Break multilib_matches into the component strings of string
6829 and replacement string. */
6830 for (q = multilib_matches; *q != '\0'; q++)
6831 if (*q == ';')
6832 cnt++;
6833
6834 matches = alloca ((sizeof (struct mswitchstr)) * cnt);
6835 i = 0;
6836 q = multilib_matches;
6837 while (*q != '\0')
6838 {
6839 matches[i].str = q;
6840 while (*q != ' ')
6841 {
6842 if (*q == '\0')
6843 abort ();
6844 q++;
6845 }
6846 matches[i].len = q - matches[i].str;
6847
6848 matches[i].replace = ++q;
6849 while (*q != ';' && *q != '\0')
6850 {
6851 if (*q == ' ')
6852 abort ();
6853 q++;
6854 }
6855 matches[i].rep_len = q - matches[i].replace;
6856 i++;
6857 if (*q == ';')
6858 q++;
6859 }
6860
6861 /* Now build a list of the replacement string for switches that we care
6862 about. Make sure we allocate at least one entry. This prevents
6863 xmalloc from calling fatal, and prevents us from re-executing this
6864 block of code. */
6865 mswitches
6866 = xmalloc (sizeof (struct mswitchstr)
6867 * (n_mdswitches + (n_switches ? n_switches : 1)));
6868 for (i = 0; i < n_switches; i++)
6869 {
6870 int xlen = strlen (switches[i].part1);
6871 for (j = 0; j < cnt; j++)
6872 if (xlen == matches[j].len
6873 && ! strncmp (switches[i].part1, matches[j].str, xlen))
6874 {
6875 mswitches[n_mswitches].str = matches[j].replace;
6876 mswitches[n_mswitches].len = matches[j].rep_len;
6877 mswitches[n_mswitches].replace = (char *) 0;
6878 mswitches[n_mswitches].rep_len = 0;
6879 n_mswitches++;
6880 break;
6881 }
6882 }
6883
6884 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
6885 on the command line nor any options mutually incompatible with
6886 them. */
6887 for (i = 0; i < n_mdswitches; i++)
6888 {
6889 const char *r;
6890
6891 for (q = multilib_options; *q != '\0'; q++)
6892 {
6893 while (*q == ' ')
6894 q++;
6895
6896 r = q;
6897 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
6898 || strchr (" /", q[mdswitches[i].len]) == NULL)
6899 {
6900 while (*q != ' ' && *q != '/' && *q != '\0')
6901 q++;
6902 if (*q != '/')
6903 break;
6904 q++;
6905 }
6906
6907 if (*q != ' ' && *q != '\0')
6908 {
6909 while (*r != ' ' && *r != '\0')
6910 {
6911 q = r;
6912 while (*q != ' ' && *q != '/' && *q != '\0')
6913 q++;
6914
6915 if (used_arg (r, q - r))
6916 break;
6917
6918 if (*q != '/')
6919 {
6920 mswitches[n_mswitches].str = mdswitches[i].str;
6921 mswitches[n_mswitches].len = mdswitches[i].len;
6922 mswitches[n_mswitches].replace = (char *) 0;
6923 mswitches[n_mswitches].rep_len = 0;
6924 n_mswitches++;
6925 break;
6926 }
6927
6928 r = q + 1;
6929 }
6930 break;
6931 }
6932 }
6933 }
6934 }
6935
6936 for (i = 0; i < n_mswitches; i++)
6937 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
6938 return 1;
6939
6940 return 0;
6941}
6942
6943static int
6944default_arg (const char *p, int len)
6945{
6946 int i;
6947
6948 for (i = 0; i < n_mdswitches; i++)
6949 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
6950 return 1;
6951
6952 return 0;
6953}
6954
6955/* Work out the subdirectory to use based on the options. The format of
6956 multilib_select is a list of elements. Each element is a subdirectory
6957 name followed by a list of options followed by a semicolon. The format
6958 of multilib_exclusions is the same, but without the preceding
6959 directory. First gcc will check the exclusions, if none of the options
6960 beginning with an exclamation point are present, and all of the other
6961 options are present, then we will ignore this completely. Passing
6962 that, gcc will consider each multilib_select in turn using the same
6963 rules for matching the options. If a match is found, that subdirectory
6964 will be used. */
6965
6966static void
6967set_multilib_dir (void)
6968{
6969 const char *p;
6970 unsigned int this_path_len;
6971 const char *this_path, *this_arg;
6972 const char *start, *end;
6973 int not_arg;
6974 int ok, ndfltok, first;
6975
6976 n_mdswitches = 0;
6977 start = multilib_defaults;
6978 while (*start == ' ' || *start == '\t')
6979 start++;
6980 while (*start != '\0')
6981 {
6982 n_mdswitches++;
6983 while (*start != ' ' && *start != '\t' && *start != '\0')
6984 start++;
6985 while (*start == ' ' || *start == '\t')
6986 start++;
6987 }
6988
6989 if (n_mdswitches)
6990 {
6991 int i = 0;
6992
6993 mdswitches = xmalloc (sizeof (struct mdswitchstr) * n_mdswitches);
6994 for (start = multilib_defaults; *start != '\0'; start = end + 1)
6995 {
6996 while (*start == ' ' || *start == '\t')
6997 start++;
6998
6999 if (*start == '\0')
7000 break;
7001
7002 for (end = start + 1;
7003 *end != ' ' && *end != '\t' && *end != '\0'; end++)
7004 ;
7005
7006 obstack_grow (&multilib_obstack, start, end - start);
7007 obstack_1grow (&multilib_obstack, 0);
7008 mdswitches[i].str = obstack_finish (&multilib_obstack);
7009 mdswitches[i++].len = end - start;
7010
7011 if (*end == '\0')
7012 break;
7013 }
7014 }
7015
7016 p = multilib_exclusions;
7017 while (*p != '\0')
7018 {
7019 /* Ignore newlines. */
7020 if (*p == '\n')
7021 {
7022 ++p;
7023 continue;
7024 }
7025
7026 /* Check the arguments. */
7027 ok = 1;
7028 while (*p != ';')
7029 {
7030 if (*p == '\0')
7031 abort ();
7032
7033 if (! ok)
7034 {
7035 ++p;
7036 continue;
7037 }
7038
7039 this_arg = p;
7040 while (*p != ' ' && *p != ';')
7041 {
7042 if (*p == '\0')
7043 abort ();
7044 ++p;
7045 }
7046
7047 if (*this_arg != '!')
7048 not_arg = 0;
7049 else
7050 {
7051 not_arg = 1;
7052 ++this_arg;
7053 }
7054
7055 ok = used_arg (this_arg, p - this_arg);
7056 if (not_arg)
7057 ok = ! ok;
7058
7059 if (*p == ' ')
7060 ++p;
7061 }
7062
7063 if (ok)
7064 return;
7065
7066 ++p;
7067 }
7068
7069 first = 1;
7070 p = multilib_select;
7071 while (*p != '\0')
7072 {
7073 /* Ignore newlines. */
7074 if (*p == '\n')
7075 {
7076 ++p;
7077 continue;
7078 }
7079
7080 /* Get the initial path. */
7081 this_path = p;
7082 while (*p != ' ')
7083 {
7084 if (*p == '\0')
7085 abort ();
7086 ++p;
7087 }
7088 this_path_len = p - this_path;
7089
7090 /* Check the arguments. */
7091 ok = 1;
7092 ndfltok = 1;
7093 ++p;
7094 while (*p != ';')
7095 {
7096 if (*p == '\0')
7097 abort ();
7098
7099 if (! ok)
7100 {
7101 ++p;
7102 continue;
7103 }
7104
7105 this_arg = p;
7106 while (*p != ' ' && *p != ';')
7107 {
7108 if (*p == '\0')
7109 abort ();
7110 ++p;
7111 }
7112
7113 if (*this_arg != '!')
7114 not_arg = 0;
7115 else
7116 {
7117 not_arg = 1;
7118 ++this_arg;
7119 }
7120
7121 /* If this is a default argument, we can just ignore it.
7122 This is true even if this_arg begins with '!'. Beginning
7123 with '!' does not mean that this argument is necessarily
7124 inappropriate for this library: it merely means that
7125 there is a more specific library which uses this
7126 argument. If this argument is a default, we need not
7127 consider that more specific library. */
7128 ok = used_arg (this_arg, p - this_arg);
7129 if (not_arg)
7130 ok = ! ok;
7131
7132 if (! ok)
7133 ndfltok = 0;
7134
7135 if (default_arg (this_arg, p - this_arg))
7136 ok = 1;
7137
7138 if (*p == ' ')
7139 ++p;
7140 }
7141
7142 if (ok && first)
7143 {
7144 if (this_path_len != 1
7145 || this_path[0] != '.')
7146 {
7147 char *new_multilib_dir = xmalloc (this_path_len + 1);
7148 char *q;
7149
7150 strncpy (new_multilib_dir, this_path, this_path_len);
7151 new_multilib_dir[this_path_len] = '\0';
7152 q = strchr (new_multilib_dir, ':');
7153 if (q != NULL)
7154 *q = '\0';
7155 multilib_dir = new_multilib_dir;
7156 }
7157 first = 0;
7158 }
7159
7160 if (ndfltok)
7161 {
7162 const char *q = this_path, *end = this_path + this_path_len;
7163
7164 while (q < end && *q != ':')
7165 q++;
7166 if (q < end)
7167 {
7168 char *new_multilib_os_dir = xmalloc (end - q);
7169 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
7170 new_multilib_os_dir[end - q - 1] = '\0';
7171 multilib_os_dir = new_multilib_os_dir;
7172 break;
7173 }
7174 }
7175
7176 ++p;
7177 }
7178
7179 if (multilib_dir == NULL && multilib_os_dir != NULL
7180 && strcmp (multilib_os_dir, ".") == 0)
7181 {
7182 free ((char *) multilib_os_dir);
7183 multilib_os_dir = NULL;
7184 }
7185 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7186 multilib_os_dir = multilib_dir;
7187}
7188
7189/* Print out the multiple library subdirectory selection
7190 information. This prints out a series of lines. Each line looks
7191 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7192 required. Only the desired options are printed out, the negative
7193 matches. The options are print without a leading dash. There are
7194 no spaces to make it easy to use the information in the shell.
7195 Each subdirectory is printed only once. This assumes the ordering
7196 generated by the genmultilib script. Also, we leave out ones that match
7197 the exclusions. */
7198
7199static void
7200print_multilib_info (void)
7201{
7202 const char *p = multilib_select;
7203 const char *last_path = 0, *this_path;
7204 int skip;
7205 unsigned int last_path_len = 0;
7206
7207 while (*p != '\0')
7208 {
7209 skip = 0;
7210 /* Ignore newlines. */
7211 if (*p == '\n')
7212 {
7213 ++p;
7214 continue;
7215 }
7216
7217 /* Get the initial path. */
7218 this_path = p;
7219 while (*p != ' ')
7220 {
7221 if (*p == '\0')
7222 abort ();
7223 ++p;
7224 }
7225
7226 /* When --disable-multilib was used but target defines
7227 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7228 to find multilib_os_dir, so skip them from output. */
7229 if (this_path[0] == '.' && this_path[1] == ':')
7230 skip = 1;
7231
7232 /* Check for matches with the multilib_exclusions. We don't bother
7233 with the '!' in either list. If any of the exclusion rules match
7234 all of its options with the select rule, we skip it. */
7235 {
7236 const char *e = multilib_exclusions;
7237 const char *this_arg;
7238
7239 while (*e != '\0')
7240 {
7241 int m = 1;
7242 /* Ignore newlines. */
7243 if (*e == '\n')
7244 {
7245 ++e;
7246 continue;
7247 }
7248
7249 /* Check the arguments. */
7250 while (*e != ';')
7251 {
7252 const char *q;
7253 int mp = 0;
7254
7255 if (*e == '\0')
7256 abort ();
7257
7258 if (! m)
7259 {
7260 ++e;
7261 continue;
7262 }
7263
7264 this_arg = e;
7265
7266 while (*e != ' ' && *e != ';')
7267 {
7268 if (*e == '\0')
7269 abort ();
7270 ++e;
7271 }
7272
7273 q = p + 1;
7274 while (*q != ';')
7275 {
7276 const char *arg;
7277 int len = e - this_arg;
7278
7279 if (*q == '\0')
7280 abort ();
7281
7282 arg = q;
7283
7284 while (*q != ' ' && *q != ';')
7285 {
7286 if (*q == '\0')
7287 abort ();
7288 ++q;
7289 }
7290
7291 if (! strncmp (arg, this_arg, (len < q - arg) ? q - arg : len) ||
7292 default_arg (this_arg, e - this_arg))
7293 {
7294 mp = 1;
7295 break;
7296 }
7297
7298 if (*q == ' ')
7299 ++q;
7300 }
7301
7302 if (! mp)
7303 m = 0;
7304
7305 if (*e == ' ')
7306 ++e;
7307 }
7308
7309 if (m)
7310 {
7311 skip = 1;
7312 break;
7313 }
7314
7315 if (*e != '\0')
7316 ++e;
7317 }
7318 }
7319
7320 if (! skip)
7321 {
7322 /* If this is a duplicate, skip it. */
7323 skip = (last_path != 0 && (unsigned int) (p - this_path) == last_path_len
7324 && ! strncmp (last_path, this_path, last_path_len));
7325
7326 last_path = this_path;
7327 last_path_len = p - this_path;
7328 }
7329
7330 /* If this directory requires any default arguments, we can skip
7331 it. We will already have printed a directory identical to
7332 this one which does not require that default argument. */
7333 if (! skip)
7334 {
7335 const char *q;
7336
7337 q = p + 1;
7338 while (*q != ';')
7339 {
7340 const char *arg;
7341
7342 if (*q == '\0')
7343 abort ();
7344
7345 if (*q == '!')
7346 arg = NULL;
7347 else
7348 arg = q;
7349
7350 while (*q != ' ' && *q != ';')
7351 {
7352 if (*q == '\0')
7353 abort ();
7354 ++q;
7355 }
7356
7357 if (arg != NULL
7358 && default_arg (arg, q - arg))
7359 {
7360 skip = 1;
7361 break;
7362 }
7363
7364 if (*q == ' ')
7365 ++q;
7366 }
7367 }
7368
7369 if (! skip)
7370 {
7371 const char *p1;
7372
7373 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7374 putchar (*p1);
7375 putchar (';');
7376 }
7377
7378 ++p;
7379 while (*p != ';')
7380 {
7381 int use_arg;
7382
7383 if (*p == '\0')
7384 abort ();
7385
7386 if (skip)
7387 {
7388 ++p;
7389 continue;
7390 }
7391
7392 use_arg = *p != '!';
7393
7394 if (use_arg)
7395 putchar ('@');
7396
7397 while (*p != ' ' && *p != ';')
7398 {
7399 if (*p == '\0')
7400 abort ();
7401 if (use_arg)
7402 putchar (*p);
7403 ++p;
7404 }
7405
7406 if (*p == ' ')
7407 ++p;
7408 }
7409
7410 if (! skip)
7411 {
7412 /* If there are extra options, print them now. */
7413 if (multilib_extra && *multilib_extra)
7414 {
7415 int print_at = TRUE;
7416 const char *q;
7417
7418 for (q = multilib_extra; *q != '\0'; q++)
7419 {
7420 if (*q == ' ')
7421 print_at = TRUE;
7422 else
7423 {
7424 if (print_at)
7425 putchar ('@');
7426 putchar (*q);
7427 print_at = FALSE;
7428 }
7429 }
7430 }
7431
7432 putchar ('\n');
7433 }
7434
7435 ++p;
7436 }
7437}
7438
7439/* if-exists built-in spec function.
7440
7441 Checks to see if the file specified by the absolute pathname in
7442 ARGS exists. Returns that pathname if found.
7443
7444 The usual use for this function is to check for a library file
7445 (whose name has been expanded with %s). */
7446
7447static const char *
7448if_exists_spec_function (int argc, const char **argv)
7449{
7450 /* Must have only one argument. */
7451 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7452 return argv[0];
7453
7454 return NULL;
7455}
7456
7457/* if-exists-else built-in spec function.
7458
7459 This is like if-exists, but takes an additional argument which
7460 is returned if the first argument does not exist. */
7461
7462static const char *
7463if_exists_else_spec_function (int argc, const char **argv)
7464{
7465 /* Must have exactly two arguments. */
7466 if (argc != 2)
7467 return NULL;
7468
7469 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7470 return argv[0];
7471
7472 return argv[1];
7473}
| 3412 _("(C)"));
3413 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
3414warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
3415 stdout);
3416 exit (0);
3417 }
3418 else if (strcmp (argv[i], "-fhelp") == 0)
3419 {
3420 /* translate_options () has turned --help into -fhelp. */
3421 print_help_list = 1;
3422
3423 /* We will be passing a dummy file on to the sub-processes. */
3424 n_infiles++;
3425 n_switches++;
3426
3427 /* CPP driver cannot obtain switch from cc1_options. */
3428 if (is_cpp_driver)
3429 add_preprocessor_option ("--help", 6);
3430 add_assembler_option ("--help", 6);
3431 add_linker_option ("--help", 6);
3432 }
3433 else if (strcmp (argv[i], "-ftarget-help") == 0)
3434 {
3435 /* translate_options() has turned --target-help into -ftarget-help. */
3436 target_help_flag = 1;
3437
3438 /* We will be passing a dummy file on to the sub-processes. */
3439 n_infiles++;
3440 n_switches++;
3441
3442 /* CPP driver cannot obtain switch from cc1_options. */
3443 if (is_cpp_driver)
3444 add_preprocessor_option ("--target-help", 13);
3445 add_assembler_option ("--target-help", 13);
3446 add_linker_option ("--target-help", 13);
3447 }
3448 else if (! strcmp (argv[i], "-pass-exit-codes"))
3449 {
3450 pass_exit_codes = 1;
3451 n_switches++;
3452 }
3453 else if (! strcmp (argv[i], "-print-search-dirs"))
3454 print_search_dirs = 1;
3455 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3456 print_file_name = "libgcc.a";
3457 else if (! strncmp (argv[i], "-print-file-name=", 17))
3458 print_file_name = argv[i] + 17;
3459 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3460 print_prog_name = argv[i] + 17;
3461 else if (! strcmp (argv[i], "-print-multi-lib"))
3462 print_multi_lib = 1;
3463 else if (! strcmp (argv[i], "-print-multi-directory"))
3464 print_multi_directory = 1;
3465 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3466 print_multi_os_directory = 1;
3467 else if (! strncmp (argv[i], "-Wa,", 4))
3468 {
3469 int prev, j;
3470 /* Pass the rest of this option to the assembler. */
3471
3472 /* Split the argument at commas. */
3473 prev = 4;
3474 for (j = 4; argv[i][j]; j++)
3475 if (argv[i][j] == ',')
3476 {
3477 add_assembler_option (argv[i] + prev, j - prev);
3478 prev = j + 1;
3479 }
3480
3481 /* Record the part after the last comma. */
3482 add_assembler_option (argv[i] + prev, j - prev);
3483 }
3484 else if (! strncmp (argv[i], "-Wp,", 4))
3485 {
3486 int prev, j;
3487 /* Pass the rest of this option to the preprocessor. */
3488
3489 /* Split the argument at commas. */
3490 prev = 4;
3491 for (j = 4; argv[i][j]; j++)
3492 if (argv[i][j] == ',')
3493 {
3494 add_preprocessor_option (argv[i] + prev, j - prev);
3495 prev = j + 1;
3496 }
3497
3498 /* Record the part after the last comma. */
3499 add_preprocessor_option (argv[i] + prev, j - prev);
3500 }
3501 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3502 /* The +e options to the C++ front-end. */
3503 n_switches++;
3504 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3505 {
3506 int j;
3507 /* Split the argument at commas. */
3508 for (j = 3; argv[i][j]; j++)
3509 n_infiles += (argv[i][j] == ',');
3510 }
3511 else if (strcmp (argv[i], "-Xlinker") == 0)
3512 {
3513 if (i + 1 == argc)
3514 fatal ("argument to `-Xlinker' is missing");
3515
3516 n_infiles++;
3517 i++;
3518 }
3519 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3520 {
3521 if (i + 1 == argc)
3522 fatal ("argument to `-Xpreprocessor' is missing");
3523
3524 add_preprocessor_option (argv[i+1], strlen (argv[i+1]));
3525 }
3526 else if (strcmp (argv[i], "-Xassembler") == 0)
3527 {
3528 if (i + 1 == argc)
3529 fatal ("argument to `-Xassembler' is missing");
3530
3531 add_assembler_option (argv[i+1], strlen (argv[i+1]));
3532 }
3533 else if (strcmp (argv[i], "-l") == 0)
3534 {
3535 if (i + 1 == argc)
3536 fatal ("argument to `-l' is missing");
3537
3538 n_infiles++;
3539 i++;
3540 }
3541 else if (strncmp (argv[i], "-l", 2) == 0)
3542 n_infiles++;
3543 else if (strcmp (argv[i], "-save-temps") == 0)
3544 {
3545 save_temps_flag = 1;
3546 n_switches++;
3547 }
3548 else if (strcmp (argv[i], "-specs") == 0)
3549 {
3550 struct user_specs *user = xmalloc (sizeof (struct user_specs));
3551 if (++i >= argc)
3552 fatal ("argument to `-specs' is missing");
3553
3554 user->next = (struct user_specs *) 0;
3555 user->filename = argv[i];
3556 if (user_specs_tail)
3557 user_specs_tail->next = user;
3558 else
3559 user_specs_head = user;
3560 user_specs_tail = user;
3561 }
3562 else if (strncmp (argv[i], "-specs=", 7) == 0)
3563 {
3564 struct user_specs *user = xmalloc (sizeof (struct user_specs));
3565 if (strlen (argv[i]) == 7)
3566 fatal ("argument to `-specs=' is missing");
3567
3568 user->next = (struct user_specs *) 0;
3569 user->filename = argv[i] + 7;
3570 if (user_specs_tail)
3571 user_specs_tail->next = user;
3572 else
3573 user_specs_head = user;
3574 user_specs_tail = user;
3575 }
3576 else if (strcmp (argv[i], "-time") == 0)
3577 report_times = 1;
3578 else if (strcmp (argv[i], "-pipe") == 0)
3579 {
3580 /* -pipe has to go into the switches array as well as
3581 setting a flag. */
3582 use_pipes = 1;
3583 n_switches++;
3584 }
3585 else if (strcmp (argv[i], "-###") == 0)
3586 {
3587 /* This is similar to -v except that there is no execution
3588 of the commands and the echoed arguments are quoted. It
3589 is intended for use in shell scripts to capture the
3590 driver-generated command line. */
3591 verbose_only_flag++;
3592 verbose_flag++;
3593 }
3594 else if (argv[i][0] == '-' && argv[i][1] != 0)
3595 {
3596 const char *p = &argv[i][1];
3597 int c = *p;
3598
3599 switch (c)
3600 {
3601 case 'b':
3602 case 'V':
3603 fatal ("`-%c' must come at the start of the command line", c);
3604 break;
3605
3606 case 'B':
3607 {
3608 const char *value;
3609 int len;
3610
3611 if (p[1] == 0 && i + 1 == argc)
3612 fatal ("argument to `-B' is missing");
3613 if (p[1] == 0)
3614 value = argv[++i];
3615 else
3616 value = p + 1;
3617
3618 len = strlen (value);
3619
3620 /* Catch the case where the user has forgotten to append a
3621 directory separator to the path. Note, they may be using
3622 -B to add an executable name prefix, eg "i386-elf-", in
3623 order to distinguish between multiple installations of
3624 GCC in the same directory. Hence we must check to see
3625 if appending a directory separator actually makes a
3626 valid directory name. */
3627 if (! IS_DIR_SEPARATOR (value [len - 1])
3628 && is_directory (value, "", 0))
3629 {
3630 char *tmp = xmalloc (len + 2);
3631 strcpy (tmp, value);
3632 tmp[len] = DIR_SEPARATOR;
3633 tmp[++ len] = 0;
3634 value = tmp;
3635 }
3636
3637 /* As a kludge, if the arg is "[foo/]stageN/", just
3638 add "[foo/]include" to the include prefix. */
3639 if ((len == 7
3640 || (len > 7
3641 && (IS_DIR_SEPARATOR (value[len - 8]))))
3642 && strncmp (value + len - 7, "stage", 5) == 0
3643 && ISDIGIT (value[len - 2])
3644 && (IS_DIR_SEPARATOR (value[len - 1])))
3645 {
3646 if (len == 7)
3647 add_prefix (&include_prefixes, "include", NULL,
3648 PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3649 else
3650 {
3651 char * string = xmalloc (len + 1);
3652
3653 strncpy (string, value, len - 7);
3654 strcpy (string + len - 7, "include");
3655 add_prefix (&include_prefixes, string, NULL,
3656 PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3657 }
3658 }
3659
3660 add_prefix (&exec_prefixes, value, NULL,
3661 PREFIX_PRIORITY_B_OPT, 0, &warn_B, 0);
3662 add_prefix (&startfile_prefixes, value, NULL,
3663 PREFIX_PRIORITY_B_OPT, 0, &warn_B, 0);
3664 add_prefix (&include_prefixes, concat (value, "include", NULL),
3665 NULL, PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3666 n_switches++;
3667 }
3668 break;
3669
3670 case 'v': /* Print our subcommands and print versions. */
3671 n_switches++;
3672 /* If they do anything other than exactly `-v', don't set
3673 verbose_flag; rather, continue on to give the error. */
3674 if (p[1] != 0)
3675 break;
3676 verbose_flag++;
3677 break;
3678
3679 case 'S':
3680 case 'c':
3681 if (p[1] == 0)
3682 {
3683 have_c = 1;
3684 n_switches++;
3685 break;
3686 }
3687 goto normal_switch;
3688
3689 case 'o':
3690 have_o = 1;
3691#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3692 if (! have_c)
3693 {
3694 int skip;
3695
3696 /* Forward scan, just in case -S or -c is specified
3697 after -o. */
3698 int j = i + 1;
3699 if (p[1] == 0)
3700 ++j;
3701 while (j < argc)
3702 {
3703 if (argv[j][0] == '-')
3704 {
3705 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
3706 && argv[j][2] == 0)
3707 {
3708 have_c = 1;
3709 break;
3710 }
3711 else if ((skip = SWITCH_TAKES_ARG (argv[j][1])))
3712 j += skip - (argv[j][2] != 0);
3713 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1)))
3714 j += skip;
3715 }
3716 j++;
3717 }
3718 }
3719#endif
3720#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3721 if (p[1] == 0)
3722 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0);
3723 else
3724 argv[i] = convert_filename (argv[i], ! have_c, 0);
3725#endif
3726 goto normal_switch;
3727
3728 default:
3729 normal_switch:
3730
3731#ifdef MODIFY_TARGET_NAME
3732 is_modify_target_name = 0;
3733
3734 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3735 if (! strcmp (argv[i], modify_target[j].sw))
3736 {
3737 char *new_name = xmalloc (strlen (modify_target[j].str)
3738 + strlen (spec_machine));
3739 const char *p, *r;
3740 char *q;
3741 int made_addition = 0;
3742
3743 is_modify_target_name = 1;
3744 for (p = spec_machine, q = new_name; *p != 0; )
3745 {
3746 if (modify_target[j].add_del == DELETE
3747 && (! strncmp (q, modify_target[j].str,
3748 strlen (modify_target[j].str))))
3749 p += strlen (modify_target[j].str);
3750 else if (modify_target[j].add_del == ADD
3751 && ! made_addition && *p == '-')
3752 {
3753 for (r = modify_target[j].str; *r != 0; )
3754 *q++ = *r++;
3755 made_addition = 1;
3756 }
3757
3758 *q++ = *p++;
3759 }
3760
3761 spec_machine = new_name;
3762 }
3763
3764 if (is_modify_target_name)
3765 break;
3766#endif
3767
3768 n_switches++;
3769
3770 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
3771 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
3772 else if (WORD_SWITCH_TAKES_ARG (p))
3773 i += WORD_SWITCH_TAKES_ARG (p);
3774 }
3775 }
3776 else
3777 {
3778 n_infiles++;
3779 lang_n_infiles++;
3780 }
3781 }
3782
3783 combine_inputs = (have_c && have_o && lang_n_infiles > 1);
3784
3785 if ((save_temps_flag || report_times) && use_pipes)
3786 {
3787 /* -save-temps overrides -pipe, so that temp files are produced */
3788 if (save_temps_flag)
3789 error ("warning: -pipe ignored because -save-temps specified");
3790 /* -time overrides -pipe because we can't get correct stats when
3791 multiple children are running at once. */
3792 else if (report_times)
3793 error ("warning: -pipe ignored because -time specified");
3794
3795 use_pipes = 0;
3796 }
3797
3798 /* Set up the search paths before we go looking for config files. */
3799
3800 /* These come before the md prefixes so that we will find gcc's subcommands
3801 (such as cpp) rather than those of the host system. */
3802 /* Use 2 as fourth arg meaning try just the machine as a suffix,
3803 as well as trying the machine and the version. */
3804#ifdef FREEBSD_NATIVE
3805 add_prefix (&exec_prefixes, PREFIX"/bin/", "BINUTILS",
3806 PREFIX_PRIORITY_LAST, 0, warn_std_ptr, 0);
3807#endif /* FREEBSD_NATIVE */
3808#ifndef OS2
3809 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
3810 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3811 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
3812 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3813#ifndef FREEBSD_NATIVE
3814 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3815 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3816 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS",
3817 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3818 add_prefix (&exec_prefixes, standard_exec_prefix_2, "BINUTILS",
3819 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3820#endif /* FREEBSD_NATIVE */
3821#endif
3822
3823#ifndef FREEBSD_NATIVE
3824 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3825 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3826 add_prefix (&startfile_prefixes, standard_exec_prefix_2, "BINUTILS",
3827 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3828#endif /* not FREEBSD_NATIVE */
3829
3830 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3831 dir_separator_str, NULL);
3832
3833 /* If tooldir is relative, base it on exec_prefixes. A relative
3834 tooldir lets us move the installed tree as a unit.
3835
3836 If GCC_EXEC_PREFIX is defined, then we want to add two relative
3837 directories, so that we can search both the user specified directory
3838 and the standard place. */
3839
3840 if (!IS_ABSOLUTE_PATH (tooldir_prefix))
3841 {
3842 if (gcc_exec_prefix)
3843 {
3844 char *gcc_exec_tooldir_prefix
3845 = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
3846 spec_version, dir_separator_str, tooldir_prefix, NULL);
3847
3848 add_prefix (&exec_prefixes,
3849 concat (gcc_exec_tooldir_prefix, "bin",
3850 dir_separator_str, NULL),
3851 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 0);
3852 add_prefix (&startfile_prefixes,
3853 concat (gcc_exec_tooldir_prefix, "lib",
3854 dir_separator_str, NULL),
3855 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
3856 }
3857
3858 tooldir_prefix = concat (standard_exec_prefix, spec_machine,
3859 dir_separator_str, spec_version,
3860 dir_separator_str, tooldir_prefix, NULL);
3861 }
3862
3863#ifndef FREEBSD_NATIVE
3864 add_prefix (&exec_prefixes,
3865 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3866 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 0);
3867 add_prefix (&startfile_prefixes,
3868 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3869 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
3870
3871#if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
3872 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
3873 then consider it to relocate with the rest of the GCC installation
3874 if GCC_EXEC_PREFIX is set.
3875 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
3876 if (target_system_root && gcc_exec_prefix)
3877 {
3878 char *tmp_prefix = make_relative_prefix (argv[0],
3879 standard_bindir_prefix,
3880 target_system_root);
3881 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
3882 {
3883 target_system_root = tmp_prefix;
3884 target_system_root_changed = 1;
3885 }
3886 }
3887#endif
3888#endif /* FREEBSD_NATIVE */
3889
3890 /* More prefixes are enabled in main, after we read the specs file
3891 and determine whether this is cross-compilation or not. */
3892
3893 /* Then create the space for the vectors and scan again. */
3894
3895 switches = xmalloc ((n_switches + 1) * sizeof (struct switchstr));
3896 infiles = xmalloc ((n_infiles + 1) * sizeof (struct infile));
3897 n_switches = 0;
3898 n_infiles = 0;
3899 last_language_n_infiles = -1;
3900
3901 /* This, time, copy the text of each switch and store a pointer
3902 to the copy in the vector of switches.
3903 Store all the infiles in their vector. */
3904
3905 for (i = 1; i < argc; i++)
3906 {
3907 /* Just skip the switches that were handled by the preceding loop. */
3908#ifdef MODIFY_TARGET_NAME
3909 is_modify_target_name = 0;
3910
3911 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3912 if (! strcmp (argv[i], modify_target[j].sw))
3913 is_modify_target_name = 1;
3914
3915 if (is_modify_target_name)
3916 ;
3917 else
3918#endif
3919 if (! strncmp (argv[i], "-Wa,", 4))
3920 ;
3921 else if (! strncmp (argv[i], "-Wp,", 4))
3922 ;
3923 else if (! strcmp (argv[i], "-pass-exit-codes"))
3924 ;
3925 else if (! strcmp (argv[i], "-print-search-dirs"))
3926 ;
3927 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3928 ;
3929 else if (! strncmp (argv[i], "-print-file-name=", 17))
3930 ;
3931 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3932 ;
3933 else if (! strcmp (argv[i], "-print-multi-lib"))
3934 ;
3935 else if (! strcmp (argv[i], "-print-multi-directory"))
3936 ;
3937 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3938 ;
3939 else if (! strcmp (argv[i], "-ftarget-help"))
3940 ;
3941 else if (! strcmp (argv[i], "-fhelp"))
3942 ;
3943 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3944 {
3945 /* Compensate for the +e options to the C++ front-end;
3946 they're there simply for cfront call-compatibility. We do
3947 some magic in default_compilers to pass them down properly.
3948 Note we deliberately start at the `+' here, to avoid passing
3949 -e0 or -e1 down into the linker. */
3950 switches[n_switches].part1 = &argv[i][0];
3951 switches[n_switches].args = 0;
3952 switches[n_switches].live_cond = SWITCH_OK;
3953 switches[n_switches].validated = 0;
3954 n_switches++;
3955 }
3956 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3957 {
3958 int prev, j;
3959 /* Split the argument at commas. */
3960 prev = 4;
3961 for (j = 4; argv[i][j]; j++)
3962 if (argv[i][j] == ',')
3963 {
3964 infiles[n_infiles].language = "*";
3965 infiles[n_infiles++].name
3966 = save_string (argv[i] + prev, j - prev);
3967 prev = j + 1;
3968 }
3969 /* Record the part after the last comma. */
3970 infiles[n_infiles].language = "*";
3971 infiles[n_infiles++].name = argv[i] + prev;
3972 }
3973 else if (strcmp (argv[i], "-Xlinker") == 0)
3974 {
3975 infiles[n_infiles].language = "*";
3976 infiles[n_infiles++].name = argv[++i];
3977 }
3978 else if (strcmp (argv[i], "-Xassembler") == 0)
3979 {
3980 infiles[n_infiles].language = "*";
3981 infiles[n_infiles++].name = argv[++i];
3982 }
3983 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3984 {
3985 infiles[n_infiles].language = "*";
3986 infiles[n_infiles++].name = argv[++i];
3987 }
3988 else if (strcmp (argv[i], "-l") == 0)
3989 { /* POSIX allows separation of -l and the lib arg;
3990 canonicalize by concatenating -l with its arg */
3991 infiles[n_infiles].language = "*";
3992 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL);
3993 }
3994 else if (strncmp (argv[i], "-l", 2) == 0)
3995 {
3996 infiles[n_infiles].language = "*";
3997 infiles[n_infiles++].name = argv[i];
3998 }
3999 else if (strcmp (argv[i], "-specs") == 0)
4000 i++;
4001 else if (strncmp (argv[i], "-specs=", 7) == 0)
4002 ;
4003 else if (strcmp (argv[i], "-time") == 0)
4004 ;
4005 else if (strcmp (argv[i], "-###") == 0)
4006 ;
4007 else if (argv[i][0] == '-' && argv[i][1] != 0)
4008 {
4009 const char *p = &argv[i][1];
4010 int c = *p;
4011
4012 if (c == 'x')
4013 {
4014 if (p[1] == 0 && i + 1 == argc)
4015 fatal ("argument to `-x' is missing");
4016 if (p[1] == 0)
4017 spec_lang = argv[++i];
4018 else
4019 spec_lang = p + 1;
4020 if (! strcmp (spec_lang, "none"))
4021 /* Suppress the warning if -xnone comes after the last input
4022 file, because alternate command interfaces like g++ might
4023 find it useful to place -xnone after each input file. */
4024 spec_lang = 0;
4025 else
4026 last_language_n_infiles = n_infiles;
4027 continue;
4028 }
4029 switches[n_switches].part1 = p;
4030 /* Deal with option arguments in separate argv elements. */
4031 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
4032 || WORD_SWITCH_TAKES_ARG (p))
4033 {
4034 int j = 0;
4035 int n_args = WORD_SWITCH_TAKES_ARG (p);
4036
4037 if (n_args == 0)
4038 {
4039 /* Count only the option arguments in separate argv elements. */
4040 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
4041 }
4042 if (i + n_args >= argc)
4043 fatal ("argument to `-%s' is missing", p);
4044 switches[n_switches].args
4045 = xmalloc ((n_args + 1) * sizeof(const char *));
4046 while (j < n_args)
4047 switches[n_switches].args[j++] = argv[++i];
4048 /* Null-terminate the vector. */
4049 switches[n_switches].args[j] = 0;
4050 }
4051 else if (strchr (switches_need_spaces, c))
4052 {
4053 /* On some systems, ld cannot handle some options without
4054 a space. So split the option from its argument. */
4055 char *part1 = xmalloc (2);
4056 part1[0] = c;
4057 part1[1] = '\0';
4058
4059 switches[n_switches].part1 = part1;
4060 switches[n_switches].args = xmalloc (2 * sizeof (const char *));
4061 switches[n_switches].args[0] = xstrdup (p+1);
4062 switches[n_switches].args[1] = 0;
4063 }
4064 else
4065 switches[n_switches].args = 0;
4066
4067 switches[n_switches].live_cond = SWITCH_OK;
4068 switches[n_switches].validated = 0;
4069 switches[n_switches].ordering = 0;
4070 /* These are always valid, since gcc.c itself understands them. */
4071 if (!strcmp (p, "save-temps")
4072 || !strcmp (p, "static-libgcc")
4073 || !strcmp (p, "shared-libgcc")
4074 || !strcmp (p, "pipe"))
4075 switches[n_switches].validated = 1;
4076 else
4077 {
4078 char ch = switches[n_switches].part1[0];
4079 if (ch == 'B')
4080 switches[n_switches].validated = 1;
4081 }
4082 n_switches++;
4083 }
4084 else
4085 {
4086#ifdef HAVE_TARGET_OBJECT_SUFFIX
4087 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
4088#endif
4089
4090 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
4091 {
4092 perror_with_name (argv[i]);
4093 error_count++;
4094 }
4095 else
4096 {
4097 infiles[n_infiles].language = spec_lang;
4098 infiles[n_infiles++].name = argv[i];
4099 }
4100 }
4101 }
4102
4103 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4104 error ("warning: `-x %s' after last input file has no effect", spec_lang);
4105
4106 /* Ensure we only invoke each subprocess once. */
4107 if (target_help_flag || print_help_list)
4108 {
4109 n_infiles = 1;
4110
4111 /* Create a dummy input file, so that we can pass --target-help on to
4112 the various sub-processes. */
4113 infiles[0].language = "c";
4114 infiles[0].name = "help-dummy";
4115
4116 if (target_help_flag)
4117 {
4118 switches[n_switches].part1 = "--target-help";
4119 switches[n_switches].args = 0;
4120 switches[n_switches].live_cond = SWITCH_OK;
4121 switches[n_switches].validated = 0;
4122
4123 n_switches++;
4124 }
4125
4126 if (print_help_list)
4127 {
4128 switches[n_switches].part1 = "--help";
4129 switches[n_switches].args = 0;
4130 switches[n_switches].live_cond = SWITCH_OK;
4131 switches[n_switches].validated = 0;
4132
4133 n_switches++;
4134 }
4135 }
4136
4137 switches[n_switches].part1 = 0;
4138 infiles[n_infiles].name = 0;
4139}
4140
4141/* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4142 and place that in the environment. */
4143
4144static void
4145set_collect_gcc_options (void)
4146{
4147 int i;
4148 int first_time;
4149
4150 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4151 the compiler. */
4152 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4153 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4154
4155 first_time = TRUE;
4156 for (i = 0; (int) i < n_switches; i++)
4157 {
4158 const char *const *args;
4159 const char *p, *q;
4160 if (!first_time)
4161 obstack_grow (&collect_obstack, " ", 1);
4162
4163 first_time = FALSE;
4164
4165 /* Ignore elided switches. */
4166 if (switches[i].live_cond == SWITCH_IGNORE)
4167 continue;
4168
4169 obstack_grow (&collect_obstack, "'-", 2);
4170 q = switches[i].part1;
4171 while ((p = strchr (q, '\'')))
4172 {
4173 obstack_grow (&collect_obstack, q, p - q);
4174 obstack_grow (&collect_obstack, "'\\''", 4);
4175 q = ++p;
4176 }
4177 obstack_grow (&collect_obstack, q, strlen (q));
4178 obstack_grow (&collect_obstack, "'", 1);
4179
4180 for (args = switches[i].args; args && *args; args++)
4181 {
4182 obstack_grow (&collect_obstack, " '", 2);
4183 q = *args;
4184 while ((p = strchr (q, '\'')))
4185 {
4186 obstack_grow (&collect_obstack, q, p - q);
4187 obstack_grow (&collect_obstack, "'\\''", 4);
4188 q = ++p;
4189 }
4190 obstack_grow (&collect_obstack, q, strlen (q));
4191 obstack_grow (&collect_obstack, "'", 1);
4192 }
4193 }
4194 obstack_grow (&collect_obstack, "\0", 1);
4195 putenv (obstack_finish (&collect_obstack));
4196}
4197
4198/* Process a spec string, accumulating and running commands. */
4199
4200/* These variables describe the input file name.
4201 input_file_number is the index on outfiles of this file,
4202 so that the output file name can be stored for later use by %o.
4203 input_basename is the start of the part of the input file
4204 sans all directory names, and basename_length is the number
4205 of characters starting there excluding the suffix .c or whatever. */
4206
4207static const char *input_filename;
4208static int input_file_number;
4209size_t input_filename_length;
4210static int basename_length;
4211static int suffixed_basename_length;
4212static const char *input_basename;
4213static const char *input_suffix;
4214static struct stat input_stat;
4215static int input_stat_set;
4216
4217/* The compiler used to process the current input file. */
4218static struct compiler *input_file_compiler;
4219
4220/* These are variables used within do_spec and do_spec_1. */
4221
4222/* Nonzero if an arg has been started and not yet terminated
4223 (with space, tab or newline). */
4224static int arg_going;
4225
4226/* Nonzero means %d or %g has been seen; the next arg to be terminated
4227 is a temporary file name. */
4228static int delete_this_arg;
4229
4230/* Nonzero means %w has been seen; the next arg to be terminated
4231 is the output file name of this compilation. */
4232static int this_is_output_file;
4233
4234/* Nonzero means %s has been seen; the next arg to be terminated
4235 is the name of a library file and we should try the standard
4236 search dirs for it. */
4237static int this_is_library_file;
4238
4239/* Nonzero means that the input of this command is coming from a pipe. */
4240static int input_from_pipe;
4241
4242/* Nonnull means substitute this for any suffix when outputting a switches
4243 arguments. */
4244static const char *suffix_subst;
4245
4246/* Process the spec SPEC and run the commands specified therein.
4247 Returns 0 if the spec is successfully processed; -1 if failed. */
4248
4249int
4250do_spec (const char *spec)
4251{
4252 int value;
4253
4254 value = do_spec_2 (spec);
4255
4256 /* Force out any unfinished command.
4257 If -pipe, this forces out the last command if it ended in `|'. */
4258 if (value == 0)
4259 {
4260 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4261 argbuf_index--;
4262
4263 set_collect_gcc_options ();
4264
4265 if (argbuf_index > 0)
4266 value = execute ();
4267 }
4268
4269 return value;
4270}
4271
4272static int
4273do_spec_2 (const char *spec)
4274{
4275 const char *string;
4276 int result;
4277
4278 clear_args ();
4279 arg_going = 0;
4280 delete_this_arg = 0;
4281 this_is_output_file = 0;
4282 this_is_library_file = 0;
4283 input_from_pipe = 0;
4284 suffix_subst = NULL;
4285
4286 result = do_spec_1 (spec, 0, NULL);
4287
4288 /* End any pending argument. */
4289 if (arg_going)
4290 {
4291 obstack_1grow (&obstack, 0);
4292 string = obstack_finish (&obstack);
4293 if (this_is_library_file)
4294 string = find_file (string);
4295 store_arg (string, delete_this_arg, this_is_output_file);
4296 if (this_is_output_file)
4297 outfiles[input_file_number] = string;
4298 arg_going = 0;
4299 }
4300
4301 return result;
4302}
4303
4304
4305/* Process the given spec string and add any new options to the end
4306 of the switches/n_switches array. */
4307
4308static void
4309do_option_spec (const char *name, const char *spec)
4310{
4311 unsigned int i, value_count, value_len;
4312 const char *p, *q, *value;
4313 char *tmp_spec, *tmp_spec_p;
4314
4315 if (configure_default_options[0].name == NULL)
4316 return;
4317
4318 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4319 if (strcmp (configure_default_options[i].name, name) == 0)
4320 break;
4321 if (i == ARRAY_SIZE (configure_default_options))
4322 return;
4323
4324 value = configure_default_options[i].value;
4325 value_len = strlen (value);
4326
4327 /* Compute the size of the final spec. */
4328 value_count = 0;
4329 p = spec;
4330 while ((p = strstr (p, "%(VALUE)")) != NULL)
4331 {
4332 p ++;
4333 value_count ++;
4334 }
4335
4336 /* Replace each %(VALUE) by the specified value. */
4337 tmp_spec = alloca (strlen (spec) + 1
4338 + value_count * (value_len - strlen ("%(VALUE)")));
4339 tmp_spec_p = tmp_spec;
4340 q = spec;
4341 while ((p = strstr (q, "%(VALUE)")) != NULL)
4342 {
4343 memcpy (tmp_spec_p, q, p - q);
4344 tmp_spec_p = tmp_spec_p + (p - q);
4345 memcpy (tmp_spec_p, value, value_len);
4346 tmp_spec_p += value_len;
4347 q = p + strlen ("%(VALUE)");
4348 }
4349 strcpy (tmp_spec_p, q);
4350
4351 do_self_spec (tmp_spec);
4352}
4353
4354/* Process the given spec string and add any new options to the end
4355 of the switches/n_switches array. */
4356
4357static void
4358do_self_spec (const char *spec)
4359{
4360 do_spec_2 (spec);
4361 do_spec_1 (" ", 0, NULL);
4362
4363 if (argbuf_index > 0)
4364 {
4365 int i, first;
4366
4367 first = n_switches;
4368 n_switches += argbuf_index;
4369 switches = xrealloc (switches,
4370 sizeof (struct switchstr) * (n_switches + 1));
4371
4372 switches[n_switches] = switches[first];
4373 for (i = 0; i < argbuf_index; i++)
4374 {
4375 struct switchstr *sw;
4376
4377 /* Each switch should start with '-'. */
4378 if (argbuf[i][0] != '-')
4379 abort ();
4380
4381 sw = &switches[i + first];
4382 sw->part1 = &argbuf[i][1];
4383 sw->args = 0;
4384 sw->live_cond = SWITCH_OK;
4385 sw->validated = 0;
4386 sw->ordering = 0;
4387 }
4388 }
4389}
4390
4391/* Process the sub-spec SPEC as a portion of a larger spec.
4392 This is like processing a whole spec except that we do
4393 not initialize at the beginning and we do not supply a
4394 newline by default at the end.
4395 INSWITCH nonzero means don't process %-sequences in SPEC;
4396 in this case, % is treated as an ordinary character.
4397 This is used while substituting switches.
4398 INSWITCH nonzero also causes SPC not to terminate an argument.
4399
4400 Value is zero unless a line was finished
4401 and the command on that line reported an error. */
4402
4403static int
4404do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4405{
4406 const char *p = spec;
4407 int c;
4408 int i;
4409 const char *string;
4410 int value;
4411
4412 while ((c = *p++))
4413 /* If substituting a switch, treat all chars like letters.
4414 Otherwise, NL, SPC, TAB and % are special. */
4415 switch (inswitch ? 'a' : c)
4416 {
4417 case '\n':
4418 /* End of line: finish any pending argument,
4419 then run the pending command if one has been started. */
4420 if (arg_going)
4421 {
4422 obstack_1grow (&obstack, 0);
4423 string = obstack_finish (&obstack);
4424 if (this_is_library_file)
4425 string = find_file (string);
4426 store_arg (string, delete_this_arg, this_is_output_file);
4427 if (this_is_output_file)
4428 outfiles[input_file_number] = string;
4429 }
4430 arg_going = 0;
4431
4432 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4433 {
4434 /* A `|' before the newline means use a pipe here,
4435 but only if -pipe was specified.
4436 Otherwise, execute now and don't pass the `|' as an arg. */
4437 if (use_pipes)
4438 {
4439 input_from_pipe = 1;
4440 break;
4441 }
4442 else
4443 argbuf_index--;
4444 }
4445
4446 set_collect_gcc_options ();
4447
4448 if (argbuf_index > 0)
4449 {
4450 value = execute ();
4451 if (value)
4452 return value;
4453 }
4454 /* Reinitialize for a new command, and for a new argument. */
4455 clear_args ();
4456 arg_going = 0;
4457 delete_this_arg = 0;
4458 this_is_output_file = 0;
4459 this_is_library_file = 0;
4460 input_from_pipe = 0;
4461 break;
4462
4463 case '|':
4464 /* End any pending argument. */
4465 if (arg_going)
4466 {
4467 obstack_1grow (&obstack, 0);
4468 string = obstack_finish (&obstack);
4469 if (this_is_library_file)
4470 string = find_file (string);
4471 store_arg (string, delete_this_arg, this_is_output_file);
4472 if (this_is_output_file)
4473 outfiles[input_file_number] = string;
4474 }
4475
4476 /* Use pipe */
4477 obstack_1grow (&obstack, c);
4478 arg_going = 1;
4479 break;
4480
4481 case '\t':
4482 case ' ':
4483 /* Space or tab ends an argument if one is pending. */
4484 if (arg_going)
4485 {
4486 obstack_1grow (&obstack, 0);
4487 string = obstack_finish (&obstack);
4488 if (this_is_library_file)
4489 string = find_file (string);
4490 store_arg (string, delete_this_arg, this_is_output_file);
4491 if (this_is_output_file)
4492 outfiles[input_file_number] = string;
4493 }
4494 /* Reinitialize for a new argument. */
4495 arg_going = 0;
4496 delete_this_arg = 0;
4497 this_is_output_file = 0;
4498 this_is_library_file = 0;
4499 break;
4500
4501 case '%':
4502 switch (c = *p++)
4503 {
4504 case 0:
4505 fatal ("invalid specification! Bug in cc");
4506
4507 case 'b':
4508 obstack_grow (&obstack, input_basename, basename_length);
4509 arg_going = 1;
4510 break;
4511
4512 case 'B':
4513 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4514 arg_going = 1;
4515 break;
4516
4517 case 'd':
4518 delete_this_arg = 2;
4519 break;
4520
4521 /* Dump out the directories specified with LIBRARY_PATH,
4522 followed by the absolute directories
4523 that we search for startfiles. */
4524 case 'D':
4525 {
4526 struct prefix_list *pl = startfile_prefixes.plist;
4527 size_t bufsize = 100;
4528 char *buffer = xmalloc (bufsize);
4529 int idx;
4530
4531 for (; pl; pl = pl->next)
4532 {
4533#ifdef RELATIVE_PREFIX_NOT_LINKDIR
4534 /* Used on systems which record the specified -L dirs
4535 and use them to search for dynamic linking. */
4536 /* Relative directories always come from -B,
4537 and it is better not to use them for searching
4538 at run time. In particular, stage1 loses. */
4539 if (!IS_ABSOLUTE_PATH (pl->prefix))
4540 continue;
4541#endif
4542 /* Try subdirectory if there is one. */
4543 if (multilib_dir != NULL
4544 || (pl->os_multilib && multilib_os_dir != NULL))
4545 {
4546 const char *multi_dir;
4547
4548 multi_dir = pl->os_multilib ? multilib_os_dir
4549 : multilib_dir;
4550 if (machine_suffix && multilib_dir)
4551 {
4552 if (strlen (pl->prefix) + strlen (machine_suffix)
4553 >= bufsize)
4554 bufsize = (strlen (pl->prefix)
4555 + strlen (machine_suffix)) * 2 + 1;
4556 buffer = xrealloc (buffer, bufsize);
4557 strcpy (buffer, pl->prefix);
4558 strcat (buffer, machine_suffix);
4559 if (is_directory (buffer, multilib_dir, 1))
4560 {
4561 do_spec_1 ("-L", 0, NULL);
4562#ifdef SPACE_AFTER_L_OPTION
4563 do_spec_1 (" ", 0, NULL);
4564#endif
4565 do_spec_1 (buffer, 1, NULL);
4566 do_spec_1 (multilib_dir, 1, NULL);
4567 /* Make this a separate argument. */
4568 do_spec_1 (" ", 0, NULL);
4569 }
4570 }
4571 if (!pl->require_machine_suffix)
4572 {
4573 if (is_directory (pl->prefix, multi_dir, 1))
4574 {
4575 do_spec_1 ("-L", 0, NULL);
4576#ifdef SPACE_AFTER_L_OPTION
4577 do_spec_1 (" ", 0, NULL);
4578#endif
4579 do_spec_1 (pl->prefix, 1, NULL);
4580 do_spec_1 (multi_dir, 1, NULL);
4581 /* Make this a separate argument. */
4582 do_spec_1 (" ", 0, NULL);
4583 }
4584 }
4585 }
4586 if (machine_suffix)
4587 {
4588 if (is_directory (pl->prefix, machine_suffix, 1))
4589 {
4590 do_spec_1 ("-L", 0, NULL);
4591#ifdef SPACE_AFTER_L_OPTION
4592 do_spec_1 (" ", 0, NULL);
4593#endif
4594 do_spec_1 (pl->prefix, 1, NULL);
4595 /* Remove slash from machine_suffix. */
4596 if (strlen (machine_suffix) >= bufsize)
4597 bufsize = strlen (machine_suffix) * 2 + 1;
4598 buffer = xrealloc (buffer, bufsize);
4599 strcpy (buffer, machine_suffix);
4600 idx = strlen (buffer);
4601 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4602 buffer[idx - 1] = 0;
4603 do_spec_1 (buffer, 1, NULL);
4604 /* Make this a separate argument. */
4605 do_spec_1 (" ", 0, NULL);
4606 }
4607 }
4608 if (!pl->require_machine_suffix)
4609 {
4610 if (is_directory (pl->prefix, "", 1))
4611 {
4612 do_spec_1 ("-L", 0, NULL);
4613#ifdef SPACE_AFTER_L_OPTION
4614 do_spec_1 (" ", 0, NULL);
4615#endif
4616 /* Remove slash from pl->prefix. */
4617 if (strlen (pl->prefix) >= bufsize)
4618 bufsize = strlen (pl->prefix) * 2 + 1;
4619 buffer = xrealloc (buffer, bufsize);
4620 strcpy (buffer, pl->prefix);
4621 idx = strlen (buffer);
4622 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4623 buffer[idx - 1] = 0;
4624 do_spec_1 (buffer, 1, NULL);
4625 /* Make this a separate argument. */
4626 do_spec_1 (" ", 0, NULL);
4627 }
4628 }
4629 }
4630 free (buffer);
4631 }
4632 break;
4633
4634 case 'e':
4635 /* %efoo means report an error with `foo' as error message
4636 and don't execute any more commands for this file. */
4637 {
4638 const char *q = p;
4639 char *buf;
4640 while (*p != 0 && *p != '\n')
4641 p++;
4642 buf = alloca (p - q + 1);
4643 strncpy (buf, q, p - q);
4644 buf[p - q] = 0;
4645 error ("%s", buf);
4646 return -1;
4647 }
4648 break;
4649 case 'n':
4650 /* %nfoo means report a notice with `foo' on stderr. */
4651 {
4652 const char *q = p;
4653 char *buf;
4654 while (*p != 0 && *p != '\n')
4655 p++;
4656 buf = alloca (p - q + 1);
4657 strncpy (buf, q, p - q);
4658 buf[p - q] = 0;
4659 notice ("%s\n", buf);
4660 if (*p)
4661 p++;
4662 }
4663 break;
4664
4665 case 'j':
4666 {
4667 struct stat st;
4668
4669 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4670 defined, and it is not a directory, and it is
4671 writable, use it. Otherwise, treat this like any
4672 other temporary file. */
4673
4674 if ((!save_temps_flag)
4675 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4676 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4677 {
4678 obstack_grow (&obstack, HOST_BIT_BUCKET,
4679 strlen (HOST_BIT_BUCKET));
4680 delete_this_arg = 0;
4681 arg_going = 1;
4682 break;
4683 }
4684 }
4685 goto create_temp_file;
4686 case '|':
4687 if (use_pipes)
4688 {
4689 obstack_1grow (&obstack, '-');
4690 delete_this_arg = 0;
4691 arg_going = 1;
4692
4693 /* consume suffix */
4694 while (*p == '.' || ISALPHA ((unsigned char) *p))
4695 p++;
4696 if (p[0] == '%' && p[1] == 'O')
4697 p += 2;
4698
4699 break;
4700 }
4701 goto create_temp_file;
4702 case 'm':
4703 if (use_pipes)
4704 {
4705 /* consume suffix */
4706 while (*p == '.' || ISALPHA ((unsigned char) *p))
4707 p++;
4708 if (p[0] == '%' && p[1] == 'O')
4709 p += 2;
4710
4711 break;
4712 }
4713 goto create_temp_file;
4714 case 'g':
4715 case 'u':
4716 case 'U':
4717 create_temp_file:
4718 {
4719 struct temp_name *t;
4720 int suffix_length;
4721 const char *suffix = p;
4722 char *saved_suffix = NULL;
4723
4724 while (*p == '.' || ISALPHA ((unsigned char) *p))
4725 p++;
4726 suffix_length = p - suffix;
4727 if (p[0] == '%' && p[1] == 'O')
4728 {
4729 p += 2;
4730 /* We don't support extra suffix characters after %O. */
4731 if (*p == '.' || ISALPHA ((unsigned char) *p))
4732 abort ();
4733 if (suffix_length == 0)
4734 suffix = TARGET_OBJECT_SUFFIX;
4735 else
4736 {
4737 saved_suffix
4738 = xmalloc (suffix_length
4739 + strlen (TARGET_OBJECT_SUFFIX));
4740 strncpy (saved_suffix, suffix, suffix_length);
4741 strcpy (saved_suffix + suffix_length,
4742 TARGET_OBJECT_SUFFIX);
4743 }
4744 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4745 }
4746
4747 /* If the input_filename has the same suffix specified
4748 for the %g, %u, or %U, and -save-temps is specified,
4749 we could end up using that file as an intermediate
4750 thus clobbering the user's source file (.e.g.,
4751 gcc -save-temps foo.s would clobber foo.s with the
4752 output of cpp0). So check for this condition and
4753 generate a temp file as the intermediate. */
4754
4755 if (save_temps_flag)
4756 {
4757 temp_filename_length = basename_length + suffix_length;
4758 temp_filename = alloca (temp_filename_length + 1);
4759 strncpy ((char *) temp_filename, input_basename, basename_length);
4760 strncpy ((char *) temp_filename + basename_length, suffix,
4761 suffix_length);
4762 *((char *) temp_filename + temp_filename_length) = '\0';
4763 if (strcmp (temp_filename, input_filename) != 0)
4764 {
4765 struct stat st_temp;
4766
4767 /* Note, set_input() resets input_stat_set to 0. */
4768 if (input_stat_set == 0)
4769 {
4770 input_stat_set = stat (input_filename, &input_stat);
4771 if (input_stat_set >= 0)
4772 input_stat_set = 1;
4773 }
4774
4775 /* If we have the stat for the input_filename
4776 and we can do the stat for the temp_filename
4777 then the they could still refer to the same
4778 file if st_dev/st_ino's are the same. */
4779
4780 if (input_stat_set != 1
4781 || stat (temp_filename, &st_temp) < 0
4782 || input_stat.st_dev != st_temp.st_dev
4783 || input_stat.st_ino != st_temp.st_ino)
4784 {
4785 temp_filename = save_string (temp_filename,
4786 temp_filename_length + 1);
4787 obstack_grow (&obstack, temp_filename,
4788 temp_filename_length);
4789 arg_going = 1;
4790 delete_this_arg = 0;
4791 break;
4792 }
4793 }
4794 }
4795
4796 /* See if we already have an association of %g/%u/%U and
4797 suffix. */
4798 for (t = temp_names; t; t = t->next)
4799 if (t->length == suffix_length
4800 && strncmp (t->suffix, suffix, suffix_length) == 0
4801 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
4802 break;
4803
4804 /* Make a new association if needed. %u and %j
4805 require one. */
4806 if (t == 0 || c == 'u' || c == 'j')
4807 {
4808 if (t == 0)
4809 {
4810 t = xmalloc (sizeof (struct temp_name));
4811 t->next = temp_names;
4812 temp_names = t;
4813 }
4814 t->length = suffix_length;
4815 if (saved_suffix)
4816 {
4817 t->suffix = saved_suffix;
4818 saved_suffix = NULL;
4819 }
4820 else
4821 t->suffix = save_string (suffix, suffix_length);
4822 t->unique = (c == 'u' || c == 'U' || c == 'j');
4823 temp_filename = make_temp_file (t->suffix);
4824 temp_filename_length = strlen (temp_filename);
4825 t->filename = temp_filename;
4826 t->filename_length = temp_filename_length;
4827 }
4828
4829 if (saved_suffix)
4830 free (saved_suffix);
4831
4832 obstack_grow (&obstack, t->filename, t->filename_length);
4833 delete_this_arg = 1;
4834 }
4835 arg_going = 1;
4836 break;
4837
4838 case 'i':
4839 if (combine_inputs)
4840 {
4841 for (i = 0; (int) i < n_infiles; i++)
4842 store_arg (infiles[i].name, 0, 0);
4843 }
4844 else
4845 {
4846 obstack_grow (&obstack, input_filename, input_filename_length);
4847 arg_going = 1;
4848 }
4849 break;
4850
4851 case 'I':
4852 {
4853 struct prefix_list *pl = include_prefixes.plist;
4854
4855 if (gcc_exec_prefix)
4856 {
4857 do_spec_1 ("-iprefix", 1, NULL);
4858 /* Make this a separate argument. */
4859 do_spec_1 (" ", 0, NULL);
4860 do_spec_1 (gcc_exec_prefix, 1, NULL);
4861 do_spec_1 (" ", 0, NULL);
4862 }
4863
4864 if (target_system_root_changed ||
4865 (target_system_root && target_sysroot_hdrs_suffix))
4866 {
4867 do_spec_1 ("-isysroot", 1, NULL);
4868 /* Make this a separate argument. */
4869 do_spec_1 (" ", 0, NULL);
4870 do_spec_1 (target_system_root, 1, NULL);
4871 if (target_sysroot_hdrs_suffix)
4872 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
4873 do_spec_1 (" ", 0, NULL);
4874 }
4875
4876 for (; pl; pl = pl->next)
4877 {
4878 do_spec_1 ("-isystem", 1, NULL);
4879 /* Make this a separate argument. */
4880 do_spec_1 (" ", 0, NULL);
4881 do_spec_1 (pl->prefix, 1, NULL);
4882 do_spec_1 (" ", 0, NULL);
4883 }
4884 }
4885 break;
4886
4887 case 'o':
4888 {
4889 int max = n_infiles;
4890 max += lang_specific_extra_outfiles;
4891
4892 for (i = 0; i < max; i++)
4893 if (outfiles[i])
4894 store_arg (outfiles[i], 0, 0);
4895 break;
4896 }
4897
4898 case 'O':
4899 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4900 arg_going = 1;
4901 break;
4902
4903 case 's':
4904 this_is_library_file = 1;
4905 break;
4906
4907 case 'V':
4908 outfiles[input_file_number] = NULL;
4909 break;
4910
4911 case 'w':
4912 this_is_output_file = 1;
4913 break;
4914
4915 case 'W':
4916 {
4917 int cur_index = argbuf_index;
4918 /* Handle the {...} following the %W. */
4919 if (*p != '{')
4920 abort ();
4921 p = handle_braces (p + 1);
4922 if (p == 0)
4923 return -1;
4924 /* End any pending argument. */
4925 if (arg_going)
4926 {
4927 obstack_1grow (&obstack, 0);
4928 string = obstack_finish (&obstack);
4929 if (this_is_library_file)
4930 string = find_file (string);
4931 store_arg (string, delete_this_arg, this_is_output_file);
4932 if (this_is_output_file)
4933 outfiles[input_file_number] = string;
4934 arg_going = 0;
4935 }
4936 /* If any args were output, mark the last one for deletion
4937 on failure. */
4938 if (argbuf_index != cur_index)
4939 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
4940 break;
4941 }
4942
4943 /* %x{OPTION} records OPTION for %X to output. */
4944 case 'x':
4945 {
4946 const char *p1 = p;
4947 char *string;
4948
4949 /* Skip past the option value and make a copy. */
4950 if (*p != '{')
4951 abort ();
4952 while (*p++ != '}')
4953 ;
4954 string = save_string (p1 + 1, p - p1 - 2);
4955
4956 /* See if we already recorded this option. */
4957 for (i = 0; i < n_linker_options; i++)
4958 if (! strcmp (string, linker_options[i]))
4959 {
4960 free (string);
4961 return 0;
4962 }
4963
4964 /* This option is new; add it. */
4965 add_linker_option (string, strlen (string));
4966 }
4967 break;
4968
4969 /* Dump out the options accumulated previously using %x. */
4970 case 'X':
4971 for (i = 0; i < n_linker_options; i++)
4972 {
4973 do_spec_1 (linker_options[i], 1, NULL);
4974 /* Make each accumulated option a separate argument. */
4975 do_spec_1 (" ", 0, NULL);
4976 }
4977 break;
4978
4979 /* Dump out the options accumulated previously using -Wa,. */
4980 case 'Y':
4981 for (i = 0; i < n_assembler_options; i++)
4982 {
4983 do_spec_1 (assembler_options[i], 1, NULL);
4984 /* Make each accumulated option a separate argument. */
4985 do_spec_1 (" ", 0, NULL);
4986 }
4987 break;
4988
4989 /* Dump out the options accumulated previously using -Wp,. */
4990 case 'Z':
4991 for (i = 0; i < n_preprocessor_options; i++)
4992 {
4993 do_spec_1 (preprocessor_options[i], 1, NULL);
4994 /* Make each accumulated option a separate argument. */
4995 do_spec_1 (" ", 0, NULL);
4996 }
4997 break;
4998
4999 /* Here are digits and numbers that just process
5000 a certain constant string as a spec. */
5001
5002 case '1':
5003 value = do_spec_1 (cc1_spec, 0, NULL);
5004 if (value != 0)
5005 return value;
5006 break;
5007
5008 case '2':
5009 value = do_spec_1 (cc1plus_spec, 0, NULL);
5010 if (value != 0)
5011 return value;
5012 break;
5013
5014 case 'a':
5015 value = do_spec_1 (asm_spec, 0, NULL);
5016 if (value != 0)
5017 return value;
5018 break;
5019
5020 case 'A':
5021 value = do_spec_1 (asm_final_spec, 0, NULL);
5022 if (value != 0)
5023 return value;
5024 break;
5025
5026 case 'C':
5027 {
5028 const char *const spec
5029 = (input_file_compiler->cpp_spec
5030 ? input_file_compiler->cpp_spec
5031 : cpp_spec);
5032 value = do_spec_1 (spec, 0, NULL);
5033 if (value != 0)
5034 return value;
5035 }
5036 break;
5037
5038 case 'E':
5039 value = do_spec_1 (endfile_spec, 0, NULL);
5040 if (value != 0)
5041 return value;
5042 break;
5043
5044 case 'l':
5045 value = do_spec_1 (link_spec, 0, NULL);
5046 if (value != 0)
5047 return value;
5048 break;
5049
5050 case 'L':
5051 value = do_spec_1 (lib_spec, 0, NULL);
5052 if (value != 0)
5053 return value;
5054 break;
5055
5056 case 'G':
5057 value = do_spec_1 (libgcc_spec, 0, NULL);
5058 if (value != 0)
5059 return value;
5060 break;
5061
5062 case 'M':
5063 if (multilib_dir && strcmp (multilib_dir, ".") != 0)
5064 {
5065 char *p;
5066 const char *q;
5067 size_t len;
5068
5069 len = strlen (multilib_dir);
5070 obstack_blank (&obstack, len + 1);
5071 p = obstack_next_free (&obstack) - (len + 1);
5072
5073 *p++ = '_';
5074 for (q = multilib_dir; *q ; ++q, ++p)
5075 *p = (IS_DIR_SEPARATOR (*q) ? '_' : *q);
5076 }
5077 break;
5078
5079 case 'R':
5080 /* We assume there is a directory
5081 separator at the end of this string. */
5082 if (target_system_root)
5083 {
5084 obstack_grow (&obstack, target_system_root,
5085 strlen (target_system_root));
5086 if (target_sysroot_suffix)
5087 obstack_grow (&obstack, target_sysroot_suffix,
5088 strlen (target_sysroot_suffix));
5089 }
5090 break;
5091
5092 case 'S':
5093 value = do_spec_1 (startfile_spec, 0, NULL);
5094 if (value != 0)
5095 return value;
5096 break;
5097
5098 /* Here we define characters other than letters and digits. */
5099
5100 case '{':
5101 p = handle_braces (p);
5102 if (p == 0)
5103 return -1;
5104 break;
5105
5106 case ':':
5107 p = handle_spec_function (p);
5108 if (p == 0)
5109 return -1;
5110 break;
5111
5112 case '%':
5113 obstack_1grow (&obstack, '%');
5114 break;
5115
5116 case '.':
5117 {
5118 unsigned len = 0;
5119
5120 while (p[len] && p[len] != ' ' && p[len] != '%')
5121 len++;
5122 suffix_subst = save_string (p - 1, len + 1);
5123 p += len;
5124 }
5125 break;
5126
5127 /* Henceforth ignore the option(s) matching the pattern
5128 after the %<. */
5129 case '<':
5130 {
5131 unsigned len = 0;
5132 int have_wildcard = 0;
5133 int i;
5134
5135 while (p[len] && p[len] != ' ' && p[len] != '\t')
5136 len++;
5137
5138 if (p[len-1] == '*')
5139 have_wildcard = 1;
5140
5141 for (i = 0; i < n_switches; i++)
5142 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5143 && (have_wildcard || switches[i].part1[len] == '\0'))
5144 {
5145 switches[i].live_cond = SWITCH_IGNORE;
5146 switches[i].validated = 1;
5147 }
5148
5149 p += len;
5150 }
5151 break;
5152
5153 case '*':
5154 if (soft_matched_part)
5155 {
5156 do_spec_1 (soft_matched_part, 1, NULL);
5157 do_spec_1 (" ", 0, NULL);
5158 }
5159 else
5160 /* Catch the case where a spec string contains something like
5161 '%{foo:%*}'. ie there is no * in the pattern on the left
5162 hand side of the :. */
5163 error ("spec failure: '%%*' has not been initialized by pattern match");
5164 break;
5165
5166 /* Process a string found as the value of a spec given by name.
5167 This feature allows individual machine descriptions
5168 to add and use their own specs.
5169 %[...] modifies -D options the way %P does;
5170 %(...) uses the spec unmodified. */
5171 case '[':
5172 error ("warning: use of obsolete %%[ operator in specs");
5173 case '(':
5174 {
5175 const char *name = p;
5176 struct spec_list *sl;
5177 int len;
5178
5179 /* The string after the S/P is the name of a spec that is to be
5180 processed. */
5181 while (*p && *p != ')' && *p != ']')
5182 p++;
5183
5184 /* See if it's in the list. */
5185 for (len = p - name, sl = specs; sl; sl = sl->next)
5186 if (sl->name_len == len && !strncmp (sl->name, name, len))
5187 {
5188 name = *(sl->ptr_spec);
5189#ifdef DEBUG_SPECS
5190 notice ("Processing spec %c%s%c, which is '%s'\n",
5191 c, sl->name, (c == '(') ? ')' : ']', name);
5192#endif
5193 break;
5194 }
5195
5196 if (sl)
5197 {
5198 if (c == '(')
5199 {
5200 value = do_spec_1 (name, 0, NULL);
5201 if (value != 0)
5202 return value;
5203 }
5204 else
5205 {
5206 char *x = alloca (strlen (name) * 2 + 1);
5207 char *buf = x;
5208 const char *y = name;
5209 int flag = 0;
5210
5211 /* Copy all of NAME into BUF, but put __ after
5212 every -D and at the end of each arg. */
5213 while (1)
5214 {
5215 if (! strncmp (y, "-D", 2))
5216 {
5217 *x++ = '-';
5218 *x++ = 'D';
5219 *x++ = '_';
5220 *x++ = '_';
5221 y += 2;
5222 flag = 1;
5223 continue;
5224 }
5225 else if (flag
5226 && (*y == ' ' || *y == '\t' || *y == '='
5227 || *y == '}' || *y == 0))
5228 {
5229 *x++ = '_';
5230 *x++ = '_';
5231 flag = 0;
5232 }
5233 if (*y == 0)
5234 break;
5235 else
5236 *x++ = *y++;
5237 }
5238 *x = 0;
5239
5240 value = do_spec_1 (buf, 0, NULL);
5241 if (value != 0)
5242 return value;
5243 }
5244 }
5245
5246 /* Discard the closing paren or bracket. */
5247 if (*p)
5248 p++;
5249 }
5250 break;
5251
5252 default:
5253 error ("spec failure: unrecognized spec option '%c'", c);
5254 break;
5255 }
5256 break;
5257
5258 case '\\':
5259 /* Backslash: treat next character as ordinary. */
5260 c = *p++;
5261
5262 /* Fall through. */
5263 default:
5264 /* Ordinary character: put it into the current argument. */
5265 obstack_1grow (&obstack, c);
5266 arg_going = 1;
5267 }
5268
5269 /* End of string. If we are processing a spec function, we need to
5270 end any pending argument. */
5271 if (processing_spec_function && arg_going)
5272 {
5273 obstack_1grow (&obstack, 0);
5274 string = obstack_finish (&obstack);
5275 if (this_is_library_file)
5276 string = find_file (string);
5277 store_arg (string, delete_this_arg, this_is_output_file);
5278 if (this_is_output_file)
5279 outfiles[input_file_number] = string;
5280 arg_going = 0;
5281 }
5282
5283 return 0;
5284}
5285
5286/* Look up a spec function. */
5287
5288static const struct spec_function *
5289lookup_spec_function (const char *name)
5290{
5291 static const struct spec_function * const spec_function_tables[] =
5292 {
5293 static_spec_functions,
5294 lang_specific_spec_functions,
5295 };
5296 const struct spec_function *sf;
5297 unsigned int i;
5298
5299 for (i = 0; i < ARRAY_SIZE (spec_function_tables); i++)
5300 {
5301 for (sf = spec_function_tables[i]; sf->name != NULL; sf++)
5302 if (strcmp (sf->name, name) == 0)
5303 return sf;
5304 }
5305
5306 return NULL;
5307}
5308
5309/* Evaluate a spec function. */
5310
5311static const char *
5312eval_spec_function (const char *func, const char *args)
5313{
5314 const struct spec_function *sf;
5315 const char *funcval;
5316
5317 /* Saved spec processing context. */
5318 int save_argbuf_index;
5319 int save_argbuf_length;
5320 const char **save_argbuf;
5321
5322 int save_arg_going;
5323 int save_delete_this_arg;
5324 int save_this_is_output_file;
5325 int save_this_is_library_file;
5326 int save_input_from_pipe;
5327 const char *save_suffix_subst;
5328
5329
5330 sf = lookup_spec_function (func);
5331 if (sf == NULL)
5332 fatal ("unknown spec function `%s'", func);
5333
5334 /* Push the spec processing context. */
5335 save_argbuf_index = argbuf_index;
5336 save_argbuf_length = argbuf_length;
5337 save_argbuf = argbuf;
5338
5339 save_arg_going = arg_going;
5340 save_delete_this_arg = delete_this_arg;
5341 save_this_is_output_file = this_is_output_file;
5342 save_this_is_library_file = this_is_library_file;
5343 save_input_from_pipe = input_from_pipe;
5344 save_suffix_subst = suffix_subst;
5345
5346 /* Create a new spec processing context, and build the function
5347 arguments. */
5348
5349 alloc_args ();
5350 if (do_spec_2 (args) < 0)
5351 fatal ("error in args to spec function `%s'", func);
5352
5353 /* argbuf_index is an index for the next argument to be inserted, and
5354 so contains the count of the args already inserted. */
5355
5356 funcval = (*sf->func) (argbuf_index, argbuf);
5357
5358 /* Pop the spec processing context. */
5359 argbuf_index = save_argbuf_index;
5360 argbuf_length = save_argbuf_length;
5361 free (argbuf);
5362 argbuf = save_argbuf;
5363
5364 arg_going = save_arg_going;
5365 delete_this_arg = save_delete_this_arg;
5366 this_is_output_file = save_this_is_output_file;
5367 this_is_library_file = save_this_is_library_file;
5368 input_from_pipe = save_input_from_pipe;
5369 suffix_subst = save_suffix_subst;
5370
5371 return funcval;
5372}
5373
5374/* Handle a spec function call of the form:
5375
5376 %:function(args)
5377
5378 ARGS is processed as a spec in a separate context and split into an
5379 argument vector in the normal fashion. The function returns a string
5380 containing a spec which we then process in the caller's context, or
5381 NULL if no processing is required. */
5382
5383static const char *
5384handle_spec_function (const char *p)
5385{
5386 char *func, *args;
5387 const char *endp, *funcval;
5388 int count;
5389
5390 processing_spec_function++;
5391
5392 /* Get the function name. */
5393 for (endp = p; *endp != '\0'; endp++)
5394 {
5395 if (*endp == '(') /* ) */
5396 break;
5397 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5398 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5399 fatal ("malformed spec function name");
5400 }
5401 if (*endp != '(') /* ) */
5402 fatal ("no arguments for spec function");
5403 func = save_string (p, endp - p);
5404 p = ++endp;
5405
5406 /* Get the arguments. */
5407 for (count = 0; *endp != '\0'; endp++)
5408 {
5409 /* ( */
5410 if (*endp == ')')
5411 {
5412 if (count == 0)
5413 break;
5414 count--;
5415 }
5416 else if (*endp == '(') /* ) */
5417 count++;
5418 }
5419 /* ( */
5420 if (*endp != ')')
5421 fatal ("malformed spec function arguments");
5422 args = save_string (p, endp - p);
5423 p = ++endp;
5424
5425 /* p now points to just past the end of the spec function expression. */
5426
5427 funcval = eval_spec_function (func, args);
5428 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5429 p = NULL;
5430
5431 free (func);
5432 free (args);
5433
5434 processing_spec_function--;
5435
5436 return p;
5437}
5438
5439/* Inline subroutine of handle_braces. Returns true if the current
5440 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5441static inline bool
5442input_suffix_matches (const char *atom, const char *end_atom)
5443{
5444 return (input_suffix
5445 && !strncmp (input_suffix, atom, end_atom - atom)
5446 && input_suffix[end_atom - atom] == '\0');
5447}
5448
5449/* Inline subroutine of handle_braces. Returns true if a switch
5450 matching the atom bracketed by ATOM and END_ATOM appeared on the
5451 command line. */
5452static inline bool
5453switch_matches (const char *atom, const char *end_atom, int starred)
5454{
5455 int i;
5456 int len = end_atom - atom;
5457 int plen = starred ? len : -1;
5458
5459 for (i = 0; i < n_switches; i++)
5460 if (!strncmp (switches[i].part1, atom, len)
5461 && (starred || switches[i].part1[len] == '\0')
5462 && check_live_switch (i, plen))
5463 return true;
5464
5465 return false;
5466}
5467
5468/* Inline subroutine of handle_braces. Mark all of the switches which
5469 match ATOM (extends to END_ATOM; STARRED indicates whether there
5470 was a star after the atom) for later processing. */
5471static inline void
5472mark_matching_switches (const char *atom, const char *end_atom, int starred)
5473{
5474 int i;
5475 int len = end_atom - atom;
5476 int plen = starred ? len : -1;
5477
5478 for (i = 0; i < n_switches; i++)
5479 if (!strncmp (switches[i].part1, atom, len)
5480 && (starred || switches[i].part1[len] == '\0')
5481 && check_live_switch (i, plen))
5482 switches[i].ordering = 1;
5483}
5484
5485/* Inline subroutine of handle_braces. Process all the currently
5486 marked switches through give_switch, and clear the marks. */
5487static inline void
5488process_marked_switches (void)
5489{
5490 int i;
5491
5492 for (i = 0; i < n_switches; i++)
5493 if (switches[i].ordering == 1)
5494 {
5495 switches[i].ordering = 0;
5496 give_switch (i, 0);
5497 }
5498}
5499
5500/* Handle a %{ ... } construct. P points just inside the leading {.
5501 Returns a pointer one past the end of the brace block, or 0
5502 if we call do_spec_1 and that returns -1. */
5503
5504static const char *
5505handle_braces (const char *p)
5506{
5507 const char *atom, *end_atom;
5508 const char *d_atom = NULL, *d_end_atom = NULL;
5509
5510 bool a_is_suffix;
5511 bool a_is_starred;
5512 bool a_is_negated;
5513 bool a_matched;
5514
5515 bool a_must_be_last = false;
5516 bool ordered_set = false;
5517 bool disjunct_set = false;
5518 bool disj_matched = false;
5519 bool disj_starred = true;
5520 bool n_way_choice = false;
5521 bool n_way_matched = false;
5522
5523#define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5524
5525 do
5526 {
5527 if (a_must_be_last)
5528 abort ();
5529
5530 /* Scan one "atom" (S in the description above of %{}, possibly
5531 with !, ., or * modifiers). */
5532 a_matched = a_is_suffix = a_is_starred = a_is_negated = false;
5533
5534 SKIP_WHITE();
5535 if (*p == '!')
5536 p++, a_is_negated = true;
5537
5538 SKIP_WHITE();
5539 if (*p == '.')
5540 p++, a_is_suffix = true;
5541
5542 atom = p;
5543 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5544 || *p == ',' || *p == '.' || *p == '@')
5545 p++;
5546 end_atom = p;
5547
5548 if (*p == '*')
5549 p++, a_is_starred = 1;
5550
5551 SKIP_WHITE();
5552 if (*p == '&' || *p == '}')
5553 {
5554 /* Substitute the switch(es) indicated by the current atom. */
5555 ordered_set = true;
5556 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5557 || atom == end_atom)
5558 abort ();
5559
5560 mark_matching_switches (atom, end_atom, a_is_starred);
5561
5562 if (*p == '}')
5563 process_marked_switches ();
5564 }
5565 else if (*p == '|' || *p == ':')
5566 {
5567 /* Substitute some text if the current atom appears as a switch
5568 or suffix. */
5569 disjunct_set = true;
5570 if (ordered_set)
5571 abort ();
5572
5573 if (atom == end_atom)
5574 {
5575 if (!n_way_choice || disj_matched || *p == '|'
5576 || a_is_negated || a_is_suffix || a_is_starred)
5577 abort ();
5578
5579 /* An empty term may appear as the last choice of an
5580 N-way choice set; it means "otherwise". */
5581 a_must_be_last = true;
5582 disj_matched = !n_way_matched;
5583 disj_starred = false;
5584 }
5585 else
5586 {
5587 if (a_is_suffix && a_is_starred)
5588 abort ();
5589
5590 if (!a_is_starred)
5591 disj_starred = false;
5592
5593 /* Don't bother testing this atom if we already have a
5594 match. */
5595 if (!disj_matched && !n_way_matched)
5596 {
5597 if (a_is_suffix)
5598 a_matched = input_suffix_matches (atom, end_atom);
5599 else
5600 a_matched = switch_matches (atom, end_atom, a_is_starred);
5601
5602 if (a_matched != a_is_negated)
5603 {
5604 disj_matched = true;
5605 d_atom = atom;
5606 d_end_atom = end_atom;
5607 }
5608 }
5609 }
5610
5611 if (*p == ':')
5612 {
5613 /* Found the body, that is, the text to substitute if the
5614 current disjunction matches. */
5615 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5616 disj_matched && !n_way_matched);
5617 if (p == 0)
5618 return 0;
5619
5620 /* If we have an N-way choice, reset state for the next
5621 disjunction. */
5622 if (*p == ';')
5623 {
5624 n_way_choice = true;
5625 n_way_matched |= disj_matched;
5626 disj_matched = false;
5627 disj_starred = true;
5628 d_atom = d_end_atom = NULL;
5629 }
5630 }
5631 }
5632 else
5633 abort ();
5634 }
5635 while (*p++ != '}');
5636
5637 return p;
5638
5639#undef SKIP_WHITE
5640}
5641
5642/* Subroutine of handle_braces. Scan and process a brace substitution body
5643 (X in the description of %{} syntax). P points one past the colon;
5644 ATOM and END_ATOM bracket the first atom which was found to be true
5645 (present) in the current disjunction; STARRED indicates whether all
5646 the atoms in the current disjunction were starred (for syntax validation);
5647 MATCHED indicates whether the disjunction matched or not, and therefore
5648 whether or not the body is to be processed through do_spec_1 or just
5649 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5650 returns -1. */
5651
5652static const char *
5653process_brace_body (const char *p, const char *atom, const char *end_atom,
5654 int starred, int matched)
5655{
5656 const char *body, *end_body;
5657 unsigned int nesting_level;
5658 bool have_subst = false;
5659
5660 /* Locate the closing } or ;, honoring nested braces.
5661 Trim trailing whitespace. */
5662 body = p;
5663 nesting_level = 1;
5664 for (;;)
5665 {
5666 if (*p == '{')
5667 nesting_level++;
5668 else if (*p == '}')
5669 {
5670 if (!--nesting_level)
5671 break;
5672 }
5673 else if (*p == ';' && nesting_level == 1)
5674 break;
5675 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
5676 have_subst = true;
5677 else if (*p == '\0')
5678 abort ();
5679 p++;
5680 }
5681
5682 end_body = p;
5683 while (end_body[-1] == ' ' || end_body[-1] == '\t')
5684 end_body--;
5685
5686 if (have_subst && !starred)
5687 abort ();
5688
5689 if (matched)
5690 {
5691 /* Copy the substitution body to permanent storage and execute it.
5692 If have_subst is false, this is a simple matter of running the
5693 body through do_spec_1... */
5694 char *string = save_string (body, end_body - body);
5695 if (!have_subst)
5696 {
5697 if (do_spec_1 (string, 0, NULL) < 0)
5698 return 0;
5699 }
5700 else
5701 {
5702 /* ... but if have_subst is true, we have to process the
5703 body once for each matching switch, with %* set to the
5704 variant part of the switch. */
5705 unsigned int hard_match_len = end_atom - atom;
5706 int i;
5707
5708 for (i = 0; i < n_switches; i++)
5709 if (!strncmp (switches[i].part1, atom, hard_match_len)
5710 && check_live_switch (i, hard_match_len))
5711 {
5712 if (do_spec_1 (string, 0,
5713 &switches[i].part1[hard_match_len]) < 0)
5714 return 0;
5715 /* Pass any arguments this switch has. */
5716 give_switch (i, 1);
5717 suffix_subst = NULL;
5718 }
5719 }
5720 }
5721
5722 return p;
5723}
5724
5725/* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5726 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5727 spec, or -1 if either exact match or %* is used.
5728
5729 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5730 whose value does not begin with "no-" is obsoleted by the same value
5731 with the "no-", similarly for a switch with the "no-" prefix. */
5732
5733static int
5734check_live_switch (int switchnum, int prefix_length)
5735{
5736 const char *name = switches[switchnum].part1;
5737 int i;
5738
5739 /* In the common case of {<at-most-one-letter>*}, a negating
5740 switch would always match, so ignore that case. We will just
5741 send the conflicting switches to the compiler phase. */
5742 if (prefix_length >= 0 && prefix_length <= 1)
5743 return 1;
5744
5745 /* If we already processed this switch and determined if it was
5746 live or not, return our past determination. */
5747 if (switches[switchnum].live_cond != 0)
5748 return switches[switchnum].live_cond > 0;
5749
5750 /* Now search for duplicate in a manner that depends on the name. */
5751 switch (*name)
5752 {
5753 case 'O':
5754 for (i = switchnum + 1; i < n_switches; i++)
5755 if (switches[i].part1[0] == 'O')
5756 {
5757 switches[switchnum].validated = 1;
5758 switches[switchnum].live_cond = SWITCH_FALSE;
5759 return 0;
5760 }
5761 break;
5762
5763 case 'W': case 'f': case 'm':
5764 if (! strncmp (name + 1, "no-", 3))
5765 {
5766 /* We have Xno-YYY, search for XYYY. */
5767 for (i = switchnum + 1; i < n_switches; i++)
5768 if (switches[i].part1[0] == name[0]
5769 && ! strcmp (&switches[i].part1[1], &name[4]))
5770 {
5771 switches[switchnum].validated = 1;
5772 switches[switchnum].live_cond = SWITCH_FALSE;
5773 return 0;
5774 }
5775 }
5776 else
5777 {
5778 /* We have XYYY, search for Xno-YYY. */
5779 for (i = switchnum + 1; i < n_switches; i++)
5780 if (switches[i].part1[0] == name[0]
5781 && switches[i].part1[1] == 'n'
5782 && switches[i].part1[2] == 'o'
5783 && switches[i].part1[3] == '-'
5784 && !strcmp (&switches[i].part1[4], &name[1]))
5785 {
5786 switches[switchnum].validated = 1;
5787 switches[switchnum].live_cond = SWITCH_FALSE;
5788 return 0;
5789 }
5790 }
5791 break;
5792 }
5793
5794 /* Otherwise the switch is live. */
5795 switches[switchnum].live_cond = SWITCH_LIVE;
5796 return 1;
5797}
5798
5799/* Pass a switch to the current accumulating command
5800 in the same form that we received it.
5801 SWITCHNUM identifies the switch; it is an index into
5802 the vector of switches gcc received, which is `switches'.
5803 This cannot fail since it never finishes a command line.
5804
5805 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5806
5807static void
5808give_switch (int switchnum, int omit_first_word)
5809{
5810 if (switches[switchnum].live_cond == SWITCH_IGNORE)
5811 return;
5812
5813 if (!omit_first_word)
5814 {
5815 do_spec_1 ("-", 0, NULL);
5816 do_spec_1 (switches[switchnum].part1, 1, NULL);
5817 }
5818
5819 if (switches[switchnum].args != 0)
5820 {
5821 const char **p;
5822 for (p = switches[switchnum].args; *p; p++)
5823 {
5824 const char *arg = *p;
5825
5826 do_spec_1 (" ", 0, NULL);
5827 if (suffix_subst)
5828 {
5829 unsigned length = strlen (arg);
5830 int dot = 0;
5831
5832 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5833 if (arg[length] == '.')
5834 {
5835 ((char *)arg)[length] = 0;
5836 dot = 1;
5837 break;
5838 }
5839 do_spec_1 (arg, 1, NULL);
5840 if (dot)
5841 ((char *)arg)[length] = '.';
5842 do_spec_1 (suffix_subst, 1, NULL);
5843 }
5844 else
5845 do_spec_1 (arg, 1, NULL);
5846 }
5847 }
5848
5849 do_spec_1 (" ", 0, NULL);
5850 switches[switchnum].validated = 1;
5851}
5852
5853/* Search for a file named NAME trying various prefixes including the
5854 user's -B prefix and some standard ones.
5855 Return the absolute file name found. If nothing is found, return NAME. */
5856
5857static const char *
5858find_file (const char *name)
5859{
5860 char *newname;
5861
5862 /* Try multilib_dir if it is defined. */
5863 if (multilib_os_dir != NULL)
5864 {
5865 newname = find_a_file (&startfile_prefixes, name, R_OK, 1);
5866
5867 /* If we don't find it in the multi library dir, then fall
5868 through and look for it in the normal places. */
5869 if (newname != NULL)
5870 return newname;
5871 }
5872
5873 newname = find_a_file (&startfile_prefixes, name, R_OK, 0);
5874 return newname ? newname : name;
5875}
5876
5877/* Determine whether a directory exists. If LINKER, return 0 for
5878 certain fixed names not needed by the linker. If not LINKER, it is
5879 only important to return 0 if the host machine has a small ARG_MAX
5880 limit. */
5881
5882static int
5883is_directory (const char *path1, const char *path2, int linker)
5884{
5885 int len1 = strlen (path1);
5886 int len2 = strlen (path2);
5887 char *path = alloca (3 + len1 + len2);
5888 char *cp;
5889 struct stat st;
5890
5891#ifndef SMALL_ARG_MAX
5892 if (! linker)
5893 return 1;
5894#endif
5895
5896 /* Construct the path from the two parts. Ensure the string ends with "/.".
5897 The resulting path will be a directory even if the given path is a
5898 symbolic link. */
5899 memcpy (path, path1, len1);
5900 memcpy (path + len1, path2, len2);
5901 cp = path + len1 + len2;
5902 if (!IS_DIR_SEPARATOR (cp[-1]))
5903 *cp++ = DIR_SEPARATOR;
5904 *cp++ = '.';
5905 *cp = '\0';
5906
5907#ifndef FREEBSD_NATIVE
5908 /* Exclude directories that the linker is known to search. */
5909 if (linker
5910 && ((cp - path == 6
5911 && strcmp (path, concat (dir_separator_str, "lib",
5912 dir_separator_str, ".", NULL)) == 0)
5913 || (cp - path == 10
5914 && strcmp (path, concat (dir_separator_str, "usr",
5915 dir_separator_str, "lib",
5916 dir_separator_str, ".", NULL)) == 0)))
5917 return 0;
5918#endif /* FREEBSD_NATIVE */
5919
5920 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5921}
5922
5923/* Set up the various global variables to indicate that we're processing
5924 the input file named FILENAME. */
5925
5926void
5927set_input (const char *filename)
5928{
5929 const char *p;
5930
5931 input_filename = filename;
5932 input_filename_length = strlen (input_filename);
5933
5934 input_basename = input_filename;
5935#ifdef HAVE_DOS_BASED_FILE_SYSTEM
5936 /* Skip drive name so 'x:foo' is handled properly. */
5937 if (input_basename[1] == ':')
5938 input_basename += 2;
5939#endif
5940 for (p = input_basename; *p; p++)
5941 if (IS_DIR_SEPARATOR (*p))
5942 input_basename = p + 1;
5943
5944 /* Find a suffix starting with the last period,
5945 and set basename_length to exclude that suffix. */
5946 basename_length = strlen (input_basename);
5947 suffixed_basename_length = basename_length;
5948 p = input_basename + basename_length;
5949 while (p != input_basename && *p != '.')
5950 --p;
5951 if (*p == '.' && p != input_basename)
5952 {
5953 basename_length = p - input_basename;
5954 input_suffix = p + 1;
5955 }
5956 else
5957 input_suffix = "";
5958
5959 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5960 we will need to do a stat on the input_filename. The
5961 INPUT_STAT_SET signals that the stat is needed. */
5962 input_stat_set = 0;
5963}
5964
5965/* On fatal signals, delete all the temporary files. */
5966
5967static void
5968fatal_error (int signum)
5969{
5970 signal (signum, SIG_DFL);
5971 delete_failure_queue ();
5972 delete_temp_files ();
5973 /* Get the same signal again, this time not handled,
5974 so its normal effect occurs. */
5975 kill (getpid (), signum);
5976}
5977
5978extern int main (int, const char **);
5979
5980int
5981main (int argc, const char **argv)
5982{
5983 size_t i;
5984 int value;
5985 int linker_was_run = 0;
5986 int num_linker_inputs = 0;
5987 char *explicit_link_files;
5988 char *specs_file;
5989 const char *p;
5990 struct user_specs *uptr;
5991
5992 p = argv[0] + strlen (argv[0]);
5993 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
5994 --p;
5995 programname = p;
5996
5997 xmalloc_set_program_name (programname);
5998
5999#ifdef GCC_DRIVER_HOST_INITIALIZATION
6000 /* Perform host dependent initialization when needed. */
6001 GCC_DRIVER_HOST_INITIALIZATION;
6002#endif
6003
6004 gcc_init_libintl ();
6005
6006 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
6007 signal (SIGINT, fatal_error);
6008#ifdef SIGHUP
6009 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
6010 signal (SIGHUP, fatal_error);
6011#endif
6012 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
6013 signal (SIGTERM, fatal_error);
6014#ifdef SIGPIPE
6015 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
6016 signal (SIGPIPE, fatal_error);
6017#endif
6018#ifdef SIGCHLD
6019 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6020 receive the signal. A different setting is inheritable */
6021 signal (SIGCHLD, SIG_DFL);
6022#endif
6023
6024 /* Allocate the argument vector. */
6025 alloc_args ();
6026
6027 obstack_init (&obstack);
6028
6029 /* Build multilib_select, et. al from the separate lines that make up each
6030 multilib selection. */
6031 {
6032 const char *const *q = multilib_raw;
6033 int need_space;
6034
6035 obstack_init (&multilib_obstack);
6036 while ((p = *q++) != (char *) 0)
6037 obstack_grow (&multilib_obstack, p, strlen (p));
6038
6039 obstack_1grow (&multilib_obstack, 0);
6040 multilib_select = obstack_finish (&multilib_obstack);
6041
6042 q = multilib_matches_raw;
6043 while ((p = *q++) != (char *) 0)
6044 obstack_grow (&multilib_obstack, p, strlen (p));
6045
6046 obstack_1grow (&multilib_obstack, 0);
6047 multilib_matches = obstack_finish (&multilib_obstack);
6048
6049 q = multilib_exclusions_raw;
6050 while ((p = *q++) != (char *) 0)
6051 obstack_grow (&multilib_obstack, p, strlen (p));
6052
6053 obstack_1grow (&multilib_obstack, 0);
6054 multilib_exclusions = obstack_finish (&multilib_obstack);
6055
6056 need_space = FALSE;
6057 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
6058 {
6059 if (need_space)
6060 obstack_1grow (&multilib_obstack, ' ');
6061 obstack_grow (&multilib_obstack,
6062 multilib_defaults_raw[i],
6063 strlen (multilib_defaults_raw[i]));
6064 need_space = TRUE;
6065 }
6066
6067 obstack_1grow (&multilib_obstack, 0);
6068 multilib_defaults = obstack_finish (&multilib_obstack);
6069 }
6070
6071 /* Set up to remember the pathname of gcc and any options
6072 needed for collect. We use argv[0] instead of programname because
6073 we need the complete pathname. */
6074 obstack_init (&collect_obstack);
6075 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6076 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6077 putenv (obstack_finish (&collect_obstack));
6078
6079#ifdef INIT_ENVIRONMENT
6080 /* Set up any other necessary machine specific environment variables. */
6081 putenv (INIT_ENVIRONMENT);
6082#endif
6083
6084 /* Make a table of what switches there are (switches, n_switches).
6085 Make a table of specified input files (infiles, n_infiles).
6086 Decode switches that are handled locally. */
6087
6088 process_command (argc, argv);
6089
6090 /* Initialize the vector of specs to just the default.
6091 This means one element containing 0s, as a terminator. */
6092
6093 compilers = xmalloc (sizeof default_compilers);
6094 memcpy (compilers, default_compilers, sizeof default_compilers);
6095 n_compilers = n_default_compilers;
6096
6097 /* Read specs from a file if there is one. */
6098
6099#ifdef FREEBSD_NATIVE
6100 just_machine_suffix = "";
6101#else /* FREEBSD_NATIVE */
6102 machine_suffix = concat (spec_machine, dir_separator_str,
6103 spec_version, dir_separator_str, NULL);
6104 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6105#endif /* FREEBSD_NATIVE */
6106
6107 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, 0);
6108 /* Read the specs file unless it is a default one. */
6109 if (specs_file != 0 && strcmp (specs_file, "specs"))
6110 read_specs (specs_file, TRUE);
6111 else
6112 init_spec ();
6113
6114 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6115 for any override of as, ld and libraries. */
6116 specs_file = (char *) alloca (strlen (FBSD_DATA_PREFIX)
6117 + strlen (just_machine_suffix)
6118 + sizeof ("specs"));
6119
6120 strcpy (specs_file, FBSD_DATA_PREFIX);
6121 strcat (specs_file, just_machine_suffix);
6122 strcat (specs_file, "specs");
6123 if (access (specs_file, R_OK) == 0)
6124 read_specs (specs_file, TRUE);
6125
6126 /* Process any configure-time defaults specified for the command line
6127 options, via OPTION_DEFAULT_SPECS. */
6128 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6129 do_option_spec (option_default_specs[i].name,
6130 option_default_specs[i].spec);
6131
6132 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6133 of the command line. */
6134
6135 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6136 do_self_spec (driver_self_specs[i]);
6137
6138 /* If not cross-compiling, look for executables in the standard
6139 places. */
6140 if (*cross_compile == '0')
6141 {
6142 if (*md_exec_prefix)
6143 {
6144 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6145 PREFIX_PRIORITY_LAST, 0, NULL, 0);
6146 }
6147 }
6148
6149 /* Process sysroot_suffix_spec. */
6150 if (*sysroot_suffix_spec != 0
6151 && do_spec_2 (sysroot_suffix_spec) == 0)
6152 {
6153 if (argbuf_index > 1)
6154 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC.");
6155 else if (argbuf_index == 1)
6156 target_sysroot_suffix = xstrdup (argbuf[argbuf_index -1]);
6157 }
6158
6159 /* Process sysroot_hdrs_suffix_spec. */
6160 if (*sysroot_hdrs_suffix_spec != 0
6161 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6162 {
6163 if (argbuf_index > 1)
6164 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC.");
6165 else if (argbuf_index == 1)
6166 target_sysroot_hdrs_suffix = xstrdup (argbuf[argbuf_index -1]);
6167 }
6168
6169 /* Look for startfiles in the standard places. */
6170 if (*startfile_prefix_spec != 0
6171 && do_spec_2 (startfile_prefix_spec) == 0
6172 && do_spec_1 (" ", 0, NULL) == 0)
6173 {
6174 int ndx;
6175 for (ndx = 0; ndx < argbuf_index; ndx++)
6176 add_sysrooted_prefix (&startfile_prefixes, argbuf[ndx], "BINUTILS",
6177 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6178 }
6179 /* We should eventually get rid of all these and stick to
6180 startfile_prefix_spec exclusively. */
6181 else if (*cross_compile == '0' || target_system_root)
6182 {
6183 if (*md_exec_prefix)
6184 add_sysrooted_prefix (&startfile_prefixes, md_exec_prefix, "GCC",
6185 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6186
6187 if (*md_startfile_prefix)
6188 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6189 "GCC", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6190
6191 if (*md_startfile_prefix_1)
6192 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6193 "GCC", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6194
6195 /* If standard_startfile_prefix is relative, base it on
6196 standard_exec_prefix. This lets us move the installed tree
6197 as a unit. If GCC_EXEC_PREFIX is defined, base
6198 standard_startfile_prefix on that as well.
6199
6200 If the prefix is relative, only search it for native compilers;
6201 otherwise we will search a directory containing host libraries. */
6202 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
6203 add_sysrooted_prefix (&startfile_prefixes,
6204 standard_startfile_prefix, "BINUTILS",
6205 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6206 else if (*cross_compile == '0')
6207 {
6208 if (gcc_exec_prefix)
6209 add_prefix (&startfile_prefixes,
6210 concat (gcc_exec_prefix, machine_suffix,
6211 standard_startfile_prefix, NULL),
6212 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
6213 add_prefix (&startfile_prefixes,
6214 concat (standard_exec_prefix,
6215 machine_suffix,
6216 standard_startfile_prefix, NULL),
6217 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
6218 }
6219
6220#ifndef FREEBSD_NATIVE
6221 add_sysrooted_prefix (&startfile_prefixes, standard_startfile_prefix_1,
6222 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6223 add_sysrooted_prefix (&startfile_prefixes, standard_startfile_prefix_2,
6224 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6225#endif /* not FREEBSD_NATIVE */
6226#if 0 /* Can cause surprises, and one can use -B./ instead. */
6227 add_prefix (&startfile_prefixes, "./", NULL,
6228 PREFIX_PRIORITY_LAST, 1, NULL, 0);
6229#endif
6230 }
6231
6232 /* Process any user specified specs in the order given on the command
6233 line. */
6234 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6235 {
6236 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6237 R_OK, 0);
6238 read_specs (filename ? filename : uptr->filename, FALSE);
6239 }
6240
6241 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6242 if (gcc_exec_prefix)
6243 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6244 spec_version, dir_separator_str, NULL);
6245
6246 /* Now we have the specs.
6247 Set the `valid' bits for switches that match anything in any spec. */
6248
6249 validate_all_switches ();
6250
6251 /* Now that we have the switches and the specs, set
6252 the subdirectory based on the options. */
6253 set_multilib_dir ();
6254
6255 /* Warn about any switches that no pass was interested in. */
6256
6257 for (i = 0; (int) i < n_switches; i++)
6258 if (! switches[i].validated)
6259 error ("unrecognized option `-%s'", switches[i].part1);
6260
6261 /* Obey some of the options. */
6262
6263 if (print_search_dirs)
6264 {
6265 printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix);
6266 printf (_("programs: %s\n"), build_search_list (&exec_prefixes, "", 0));
6267 printf (_("libraries: %s\n"), build_search_list (&startfile_prefixes, "", 0));
6268 return (0);
6269 }
6270
6271 if (print_file_name)
6272 {
6273 printf ("%s\n", find_file (print_file_name));
6274 return (0);
6275 }
6276
6277 if (print_prog_name)
6278 {
6279 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6280 printf ("%s\n", (newname ? newname : print_prog_name));
6281 return (0);
6282 }
6283
6284 if (print_multi_lib)
6285 {
6286 print_multilib_info ();
6287 return (0);
6288 }
6289
6290 if (print_multi_directory)
6291 {
6292 if (multilib_dir == NULL)
6293 printf (".\n");
6294 else
6295 printf ("%s\n", multilib_dir);
6296 return (0);
6297 }
6298
6299 if (print_multi_os_directory)
6300 {
6301 if (multilib_os_dir == NULL)
6302 printf (".\n");
6303 else
6304 printf ("%s\n", multilib_os_dir);
6305 return (0);
6306 }
6307
6308 if (target_help_flag)
6309 {
6310 /* Print if any target specific options. */
6311
6312 /* We do not exit here. Instead we have created a fake input file
6313 called 'target-dummy' which needs to be compiled, and we pass this
6314 on to the various sub-processes, along with the --target-help
6315 switch. */
6316 }
6317
6318 if (print_help_list)
6319 {
6320 display_help ();
6321
6322 if (! verbose_flag)
6323 {
6324 printf (_("\nFor bug reporting instructions, please see:\n"));
6325 printf ("%s.\n", bug_report_url);
6326
6327 return (0);
6328 }
6329
6330 /* We do not exit here. Instead we have created a fake input file
6331 called 'help-dummy' which needs to be compiled, and we pass this
6332 on the various sub-processes, along with the --help switch. */
6333 }
6334
6335 if (verbose_flag)
6336 {
6337 int n;
6338 const char *thrmod;
6339
6340 notice ("Configured with: %s\n", configuration_arguments);
6341
6342#ifdef THREAD_MODEL_SPEC
6343 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6344 but there's no point in doing all this processing just to get
6345 thread_model back. */
6346 obstack_init (&obstack);
6347 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6348 obstack_1grow (&obstack, '\0');
6349 thrmod = obstack_finish (&obstack);
6350#else
6351 thrmod = thread_model;
6352#endif
6353
6354 notice ("Thread model: %s\n", thrmod);
6355
6356 /* compiler_version is truncated at the first space when initialized
6357 from version string, so truncate version_string at the first space
6358 before comparing. */
6359 for (n = 0; version_string[n]; n++)
6360 if (version_string[n] == ' ')
6361 break;
6362
6363 if (! strncmp (version_string, compiler_version, n)
6364 && compiler_version[n] == 0)
6365 notice ("gcc version %s\n", version_string);
6366 else
6367 notice ("gcc driver version %s executing gcc version %s\n",
6368 version_string, compiler_version);
6369
6370 if (n_infiles == 0)
6371 return (0);
6372 }
6373
6374 if (n_infiles == added_libraries)
6375 fatal ("No input files specified");
6376
6377 /* Make a place to record the compiler output file names
6378 that correspond to the input files. */
6379
6380 i = n_infiles;
6381 i += lang_specific_extra_outfiles;
6382 outfiles = xcalloc (i, sizeof (char *));
6383
6384 /* Record which files were specified explicitly as link input. */
6385
6386 explicit_link_files = xcalloc (1, n_infiles);
6387
6388 if (combine_inputs)
6389 {
6390 int lang_n_infiles = 0;
6391 for (i = 0; (int) i < n_infiles; i++)
6392 {
6393 const char *name = infiles[i].name;
6394 struct compiler *compiler
6395 = lookup_compiler (name, strlen (name), infiles[i].language);
6396 if (compiler == NULL)
6397 error ("%s: linker input file unused because linking not done",
6398 name);
6399 else if (lang_n_infiles > 0 && compiler != input_file_compiler)
6400 fatal ("cannot specify -o with -c or -S and multiple languages");
6401 else
6402 {
6403 lang_n_infiles++;
6404 input_file_compiler = compiler;
6405 }
6406 }
6407 }
6408
6409 for (i = 0; (int) i < (combine_inputs ? 1 : n_infiles); i++)
6410 {
6411 int this_file_error = 0;
6412
6413 /* Tell do_spec what to substitute for %i. */
6414
6415 input_file_number = i;
6416 set_input (infiles[i].name);
6417
6418 /* Use the same thing in %o, unless cp->spec says otherwise. */
6419
6420 outfiles[i] = input_filename;
6421
6422 /* Figure out which compiler from the file's suffix. */
6423
6424 if (! combine_inputs)
6425 input_file_compiler
6426 = lookup_compiler (infiles[i].name, input_filename_length,
6427 infiles[i].language);
6428
6429 if (input_file_compiler)
6430 {
6431 /* Ok, we found an applicable compiler. Run its spec. */
6432
6433 if (input_file_compiler->spec[0] == '#')
6434 {
6435 error ("%s: %s compiler not installed on this system",
6436 input_filename, &input_file_compiler->spec[1]);
6437 this_file_error = 1;
6438 }
6439 else
6440 {
6441 value = do_spec (input_file_compiler->spec);
6442 if (value < 0)
6443 this_file_error = 1;
6444 }
6445 }
6446
6447 /* If this file's name does not contain a recognized suffix,
6448 record it as explicit linker input. */
6449
6450 else
6451 explicit_link_files[i] = 1;
6452
6453 /* Clear the delete-on-failure queue, deleting the files in it
6454 if this compilation failed. */
6455
6456 if (this_file_error)
6457 {
6458 delete_failure_queue ();
6459 error_count++;
6460 }
6461 /* If this compilation succeeded, don't delete those files later. */
6462 clear_failure_queue ();
6463 }
6464
6465 /* Reset the output file name to the first input file name, for use
6466 with %b in LINK_SPEC on a target that prefers not to emit a.out
6467 by default. */
6468 if (n_infiles > 0)
6469 set_input (infiles[0].name);
6470
6471 if (error_count == 0)
6472 {
6473 /* Make sure INPUT_FILE_NUMBER points to first available open
6474 slot. */
6475 input_file_number = n_infiles;
6476 if (lang_specific_pre_link ())
6477 error_count++;
6478 }
6479
6480 /* Determine if there are any linker input files. */
6481 num_linker_inputs = 0;
6482 for (i = 0; (int) i < n_infiles; i++)
6483 if (explicit_link_files[i] || outfiles[i] != NULL)
6484 num_linker_inputs++;
6485
6486 /* Run ld to link all the compiler output files. */
6487
6488 if (num_linker_inputs > 0 && error_count == 0)
6489 {
6490 int tmp = execution_count;
6491
6492 /* We'll use ld if we can't find collect2. */
6493 if (! strcmp (linker_name_spec, "collect2"))
6494 {
6495 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, 0);
6496 if (s == NULL)
6497 linker_name_spec = "ld";
6498 }
6499 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6500 for collect. */
6501 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH");
6502 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV);
6503
6504 value = do_spec (link_command_spec);
6505 if (value < 0)
6506 error_count = 1;
6507 linker_was_run = (tmp != execution_count);
6508 }
6509
6510 /* If options said don't run linker,
6511 complain about input files to be given to the linker. */
6512
6513 if (! linker_was_run && error_count == 0)
6514 for (i = 0; (int) i < n_infiles; i++)
6515 if (explicit_link_files[i])
6516 error ("%s: linker input file unused because linking not done",
6517 outfiles[i]);
6518
6519 /* Delete some or all of the temporary files we made. */
6520
6521 if (error_count)
6522 delete_failure_queue ();
6523 delete_temp_files ();
6524
6525 if (print_help_list)
6526 {
6527 printf (("\nFor bug reporting instructions, please see:\n"));
6528 printf ("%s\n", bug_report_url);
6529 }
6530
6531 return (signal_count != 0 ? 2
6532 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
6533 : 0);
6534}
6535
6536/* Find the proper compilation spec for the file name NAME,
6537 whose length is LENGTH. LANGUAGE is the specified language,
6538 or 0 if this file is to be passed to the linker. */
6539
6540static struct compiler *
6541lookup_compiler (const char *name, size_t length, const char *language)
6542{
6543 struct compiler *cp;
6544
6545 /* If this was specified by the user to be a linker input, indicate that. */
6546 if (language != 0 && language[0] == '*')
6547 return 0;
6548
6549 /* Otherwise, look for the language, if one is spec'd. */
6550 if (language != 0)
6551 {
6552 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6553 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6554 return cp;
6555
6556 error ("language %s not recognized", language);
6557 return 0;
6558 }
6559
6560 /* Look for a suffix. */
6561 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6562 {
6563 if (/* The suffix `-' matches only the file name `-'. */
6564 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6565 || (strlen (cp->suffix) < length
6566 /* See if the suffix matches the end of NAME. */
6567 && !strcmp (cp->suffix,
6568 name + length - strlen (cp->suffix))
6569 ))
6570 break;
6571 }
6572
6573#if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6574 /* look again, but case-insensitively this time. */
6575 if (cp < compilers)
6576 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6577 {
6578 if (/* The suffix `-' matches only the file name `-'. */
6579 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6580 || (strlen (cp->suffix) < length
6581 /* See if the suffix matches the end of NAME. */
6582 && ((!strcmp (cp->suffix,
6583 name + length - strlen (cp->suffix))
6584 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6585 && !strcasecmp (cp->suffix,
6586 name + length - strlen (cp->suffix)))
6587 ))
6588 break;
6589 }
6590#endif
6591
6592 if (cp >= compilers)
6593 {
6594 if (cp->spec[0] != '@')
6595 /* A non-alias entry: return it. */
6596 return cp;
6597
6598 /* An alias entry maps a suffix to a language.
6599 Search for the language; pass 0 for NAME and LENGTH
6600 to avoid infinite recursion if language not found. */
6601 return lookup_compiler (NULL, 0, cp->spec + 1);
6602 }
6603 return 0;
6604}
6605
6606static char *
6607save_string (const char *s, int len)
6608{
6609 char *result = xmalloc (len + 1);
6610
6611 memcpy (result, s, len);
6612 result[len] = 0;
6613 return result;
6614}
6615
6616void
6617pfatal_with_name (const char *name)
6618{
6619 perror_with_name (name);
6620 delete_temp_files ();
6621 exit (1);
6622}
6623
6624static void
6625perror_with_name (const char *name)
6626{
6627 error ("%s: %s", name, xstrerror (errno));
6628}
6629
6630static void
6631pfatal_pexecute (const char *errmsg_fmt, const char *errmsg_arg)
6632{
6633 if (errmsg_arg)
6634 {
6635 int save_errno = errno;
6636
6637 /* Space for trailing '\0' is in %s. */
6638 char *msg = xmalloc (strlen (errmsg_fmt) + strlen (errmsg_arg));
6639 sprintf (msg, errmsg_fmt, errmsg_arg);
6640 errmsg_fmt = msg;
6641
6642 errno = save_errno;
6643 }
6644
6645 pfatal_with_name (errmsg_fmt);
6646}
6647
6648/* Output an error message and exit. */
6649
6650void
6651fancy_abort (void)
6652{
6653 fatal ("internal gcc abort");
6654}
6655
6656/* Output an error message and exit. */
6657
6658void
6659fatal (const char *msgid, ...)
6660{
6661 va_list ap;
6662
6663 va_start (ap, msgid);
6664
6665 fprintf (stderr, "%s: ", programname);
6666 vfprintf (stderr, _(msgid), ap);
6667 va_end (ap);
6668 fprintf (stderr, "\n");
6669 delete_temp_files ();
6670 exit (1);
6671}
6672
6673void
6674error (const char *msgid, ...)
6675{
6676 va_list ap;
6677
6678 va_start (ap, msgid);
6679 fprintf (stderr, "%s: ", programname);
6680 vfprintf (stderr, _(msgid), ap);
6681 va_end (ap);
6682
6683 fprintf (stderr, "\n");
6684}
6685
6686static void
6687notice (const char *msgid, ...)
6688{
6689 va_list ap;
6690
6691 va_start (ap, msgid);
6692 vfprintf (stderr, _(msgid), ap);
6693 va_end (ap);
6694}
6695
6696static inline void
6697validate_switches_from_spec (const char *spec)
6698{
6699 const char *p = spec;
6700 char c;
6701 while ((c = *p++))
6702 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
6703 /* We have a switch spec. */
6704 p = validate_switches (p + 1);
6705}
6706
6707static void
6708validate_all_switches (void)
6709{
6710 struct compiler *comp;
6711 struct spec_list *spec;
6712
6713 for (comp = compilers; comp->spec; comp++)
6714 validate_switches_from_spec (comp->spec);
6715
6716 /* Look through the linked list of specs read from the specs file. */
6717 for (spec = specs; spec; spec = spec->next)
6718 validate_switches_from_spec (*spec->ptr_spec);
6719
6720 validate_switches_from_spec (link_command_spec);
6721}
6722
6723/* Look at the switch-name that comes after START
6724 and mark as valid all supplied switches that match it. */
6725
6726static const char *
6727validate_switches (const char *start)
6728{
6729 const char *p = start;
6730 const char *atom;
6731 size_t len;
6732 int i;
6733 bool suffix = false;
6734 bool starred = false;
6735
6736#define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
6737
6738next_member:
6739 SKIP_WHITE ();
6740
6741 if (*p == '!')
6742 p++;
6743
6744 SKIP_WHITE ();
6745 if (*p == '.')
6746 suffix = true, p++;
6747
6748 atom = p;
6749 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
6750 || *p == ',' || *p == '.' || *p == '@')
6751 p++;
6752 len = p - atom;
6753
6754 if (*p == '*')
6755 starred = true, p++;
6756
6757 SKIP_WHITE ();
6758
6759 if (!suffix)
6760 {
6761 /* Mark all matching switches as valid. */
6762 for (i = 0; i < n_switches; i++)
6763 if (!strncmp (switches[i].part1, atom, len)
6764 && (starred || switches[i].part1[len] == 0))
6765 switches[i].validated = 1;
6766 }
6767
6768 if (*p) p++;
6769 if (*p && (p[-1] == '|' || p[-1] == '&'))
6770 goto next_member;
6771
6772 if (*p && p[-1] == ':')
6773 {
6774 while (*p && *p != ';' && *p != '}')
6775 {
6776 if (*p == '%')
6777 {
6778 p++;
6779 if (*p == '{' || *p == '<')
6780 p = validate_switches (p+1);
6781 else if (p[0] == 'W' && p[1] == '{')
6782 p = validate_switches (p+2);
6783 }
6784 else
6785 p++;
6786 }
6787
6788 if (*p) p++;
6789 if (*p && p[-1] == ';')
6790 goto next_member;
6791 }
6792
6793 return p;
6794#undef SKIP_WHITE
6795}
6796
6797struct mdswitchstr
6798{
6799 const char *str;
6800 int len;
6801};
6802
6803static struct mdswitchstr *mdswitches;
6804static int n_mdswitches;
6805
6806/* Check whether a particular argument was used. The first time we
6807 canonicalize the switches to keep only the ones we care about. */
6808
6809static int
6810used_arg (const char *p, int len)
6811{
6812 struct mswitchstr
6813 {
6814 const char *str;
6815 const char *replace;
6816 int len;
6817 int rep_len;
6818 };
6819
6820 static struct mswitchstr *mswitches;
6821 static int n_mswitches;
6822 int i, j;
6823
6824 if (!mswitches)
6825 {
6826 struct mswitchstr *matches;
6827 const char *q;
6828 int cnt = 0;
6829
6830 /* Break multilib_matches into the component strings of string
6831 and replacement string. */
6832 for (q = multilib_matches; *q != '\0'; q++)
6833 if (*q == ';')
6834 cnt++;
6835
6836 matches = alloca ((sizeof (struct mswitchstr)) * cnt);
6837 i = 0;
6838 q = multilib_matches;
6839 while (*q != '\0')
6840 {
6841 matches[i].str = q;
6842 while (*q != ' ')
6843 {
6844 if (*q == '\0')
6845 abort ();
6846 q++;
6847 }
6848 matches[i].len = q - matches[i].str;
6849
6850 matches[i].replace = ++q;
6851 while (*q != ';' && *q != '\0')
6852 {
6853 if (*q == ' ')
6854 abort ();
6855 q++;
6856 }
6857 matches[i].rep_len = q - matches[i].replace;
6858 i++;
6859 if (*q == ';')
6860 q++;
6861 }
6862
6863 /* Now build a list of the replacement string for switches that we care
6864 about. Make sure we allocate at least one entry. This prevents
6865 xmalloc from calling fatal, and prevents us from re-executing this
6866 block of code. */
6867 mswitches
6868 = xmalloc (sizeof (struct mswitchstr)
6869 * (n_mdswitches + (n_switches ? n_switches : 1)));
6870 for (i = 0; i < n_switches; i++)
6871 {
6872 int xlen = strlen (switches[i].part1);
6873 for (j = 0; j < cnt; j++)
6874 if (xlen == matches[j].len
6875 && ! strncmp (switches[i].part1, matches[j].str, xlen))
6876 {
6877 mswitches[n_mswitches].str = matches[j].replace;
6878 mswitches[n_mswitches].len = matches[j].rep_len;
6879 mswitches[n_mswitches].replace = (char *) 0;
6880 mswitches[n_mswitches].rep_len = 0;
6881 n_mswitches++;
6882 break;
6883 }
6884 }
6885
6886 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
6887 on the command line nor any options mutually incompatible with
6888 them. */
6889 for (i = 0; i < n_mdswitches; i++)
6890 {
6891 const char *r;
6892
6893 for (q = multilib_options; *q != '\0'; q++)
6894 {
6895 while (*q == ' ')
6896 q++;
6897
6898 r = q;
6899 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
6900 || strchr (" /", q[mdswitches[i].len]) == NULL)
6901 {
6902 while (*q != ' ' && *q != '/' && *q != '\0')
6903 q++;
6904 if (*q != '/')
6905 break;
6906 q++;
6907 }
6908
6909 if (*q != ' ' && *q != '\0')
6910 {
6911 while (*r != ' ' && *r != '\0')
6912 {
6913 q = r;
6914 while (*q != ' ' && *q != '/' && *q != '\0')
6915 q++;
6916
6917 if (used_arg (r, q - r))
6918 break;
6919
6920 if (*q != '/')
6921 {
6922 mswitches[n_mswitches].str = mdswitches[i].str;
6923 mswitches[n_mswitches].len = mdswitches[i].len;
6924 mswitches[n_mswitches].replace = (char *) 0;
6925 mswitches[n_mswitches].rep_len = 0;
6926 n_mswitches++;
6927 break;
6928 }
6929
6930 r = q + 1;
6931 }
6932 break;
6933 }
6934 }
6935 }
6936 }
6937
6938 for (i = 0; i < n_mswitches; i++)
6939 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
6940 return 1;
6941
6942 return 0;
6943}
6944
6945static int
6946default_arg (const char *p, int len)
6947{
6948 int i;
6949
6950 for (i = 0; i < n_mdswitches; i++)
6951 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
6952 return 1;
6953
6954 return 0;
6955}
6956
6957/* Work out the subdirectory to use based on the options. The format of
6958 multilib_select is a list of elements. Each element is a subdirectory
6959 name followed by a list of options followed by a semicolon. The format
6960 of multilib_exclusions is the same, but without the preceding
6961 directory. First gcc will check the exclusions, if none of the options
6962 beginning with an exclamation point are present, and all of the other
6963 options are present, then we will ignore this completely. Passing
6964 that, gcc will consider each multilib_select in turn using the same
6965 rules for matching the options. If a match is found, that subdirectory
6966 will be used. */
6967
6968static void
6969set_multilib_dir (void)
6970{
6971 const char *p;
6972 unsigned int this_path_len;
6973 const char *this_path, *this_arg;
6974 const char *start, *end;
6975 int not_arg;
6976 int ok, ndfltok, first;
6977
6978 n_mdswitches = 0;
6979 start = multilib_defaults;
6980 while (*start == ' ' || *start == '\t')
6981 start++;
6982 while (*start != '\0')
6983 {
6984 n_mdswitches++;
6985 while (*start != ' ' && *start != '\t' && *start != '\0')
6986 start++;
6987 while (*start == ' ' || *start == '\t')
6988 start++;
6989 }
6990
6991 if (n_mdswitches)
6992 {
6993 int i = 0;
6994
6995 mdswitches = xmalloc (sizeof (struct mdswitchstr) * n_mdswitches);
6996 for (start = multilib_defaults; *start != '\0'; start = end + 1)
6997 {
6998 while (*start == ' ' || *start == '\t')
6999 start++;
7000
7001 if (*start == '\0')
7002 break;
7003
7004 for (end = start + 1;
7005 *end != ' ' && *end != '\t' && *end != '\0'; end++)
7006 ;
7007
7008 obstack_grow (&multilib_obstack, start, end - start);
7009 obstack_1grow (&multilib_obstack, 0);
7010 mdswitches[i].str = obstack_finish (&multilib_obstack);
7011 mdswitches[i++].len = end - start;
7012
7013 if (*end == '\0')
7014 break;
7015 }
7016 }
7017
7018 p = multilib_exclusions;
7019 while (*p != '\0')
7020 {
7021 /* Ignore newlines. */
7022 if (*p == '\n')
7023 {
7024 ++p;
7025 continue;
7026 }
7027
7028 /* Check the arguments. */
7029 ok = 1;
7030 while (*p != ';')
7031 {
7032 if (*p == '\0')
7033 abort ();
7034
7035 if (! ok)
7036 {
7037 ++p;
7038 continue;
7039 }
7040
7041 this_arg = p;
7042 while (*p != ' ' && *p != ';')
7043 {
7044 if (*p == '\0')
7045 abort ();
7046 ++p;
7047 }
7048
7049 if (*this_arg != '!')
7050 not_arg = 0;
7051 else
7052 {
7053 not_arg = 1;
7054 ++this_arg;
7055 }
7056
7057 ok = used_arg (this_arg, p - this_arg);
7058 if (not_arg)
7059 ok = ! ok;
7060
7061 if (*p == ' ')
7062 ++p;
7063 }
7064
7065 if (ok)
7066 return;
7067
7068 ++p;
7069 }
7070
7071 first = 1;
7072 p = multilib_select;
7073 while (*p != '\0')
7074 {
7075 /* Ignore newlines. */
7076 if (*p == '\n')
7077 {
7078 ++p;
7079 continue;
7080 }
7081
7082 /* Get the initial path. */
7083 this_path = p;
7084 while (*p != ' ')
7085 {
7086 if (*p == '\0')
7087 abort ();
7088 ++p;
7089 }
7090 this_path_len = p - this_path;
7091
7092 /* Check the arguments. */
7093 ok = 1;
7094 ndfltok = 1;
7095 ++p;
7096 while (*p != ';')
7097 {
7098 if (*p == '\0')
7099 abort ();
7100
7101 if (! ok)
7102 {
7103 ++p;
7104 continue;
7105 }
7106
7107 this_arg = p;
7108 while (*p != ' ' && *p != ';')
7109 {
7110 if (*p == '\0')
7111 abort ();
7112 ++p;
7113 }
7114
7115 if (*this_arg != '!')
7116 not_arg = 0;
7117 else
7118 {
7119 not_arg = 1;
7120 ++this_arg;
7121 }
7122
7123 /* If this is a default argument, we can just ignore it.
7124 This is true even if this_arg begins with '!'. Beginning
7125 with '!' does not mean that this argument is necessarily
7126 inappropriate for this library: it merely means that
7127 there is a more specific library which uses this
7128 argument. If this argument is a default, we need not
7129 consider that more specific library. */
7130 ok = used_arg (this_arg, p - this_arg);
7131 if (not_arg)
7132 ok = ! ok;
7133
7134 if (! ok)
7135 ndfltok = 0;
7136
7137 if (default_arg (this_arg, p - this_arg))
7138 ok = 1;
7139
7140 if (*p == ' ')
7141 ++p;
7142 }
7143
7144 if (ok && first)
7145 {
7146 if (this_path_len != 1
7147 || this_path[0] != '.')
7148 {
7149 char *new_multilib_dir = xmalloc (this_path_len + 1);
7150 char *q;
7151
7152 strncpy (new_multilib_dir, this_path, this_path_len);
7153 new_multilib_dir[this_path_len] = '\0';
7154 q = strchr (new_multilib_dir, ':');
7155 if (q != NULL)
7156 *q = '\0';
7157 multilib_dir = new_multilib_dir;
7158 }
7159 first = 0;
7160 }
7161
7162 if (ndfltok)
7163 {
7164 const char *q = this_path, *end = this_path + this_path_len;
7165
7166 while (q < end && *q != ':')
7167 q++;
7168 if (q < end)
7169 {
7170 char *new_multilib_os_dir = xmalloc (end - q);
7171 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
7172 new_multilib_os_dir[end - q - 1] = '\0';
7173 multilib_os_dir = new_multilib_os_dir;
7174 break;
7175 }
7176 }
7177
7178 ++p;
7179 }
7180
7181 if (multilib_dir == NULL && multilib_os_dir != NULL
7182 && strcmp (multilib_os_dir, ".") == 0)
7183 {
7184 free ((char *) multilib_os_dir);
7185 multilib_os_dir = NULL;
7186 }
7187 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7188 multilib_os_dir = multilib_dir;
7189}
7190
7191/* Print out the multiple library subdirectory selection
7192 information. This prints out a series of lines. Each line looks
7193 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7194 required. Only the desired options are printed out, the negative
7195 matches. The options are print without a leading dash. There are
7196 no spaces to make it easy to use the information in the shell.
7197 Each subdirectory is printed only once. This assumes the ordering
7198 generated by the genmultilib script. Also, we leave out ones that match
7199 the exclusions. */
7200
7201static void
7202print_multilib_info (void)
7203{
7204 const char *p = multilib_select;
7205 const char *last_path = 0, *this_path;
7206 int skip;
7207 unsigned int last_path_len = 0;
7208
7209 while (*p != '\0')
7210 {
7211 skip = 0;
7212 /* Ignore newlines. */
7213 if (*p == '\n')
7214 {
7215 ++p;
7216 continue;
7217 }
7218
7219 /* Get the initial path. */
7220 this_path = p;
7221 while (*p != ' ')
7222 {
7223 if (*p == '\0')
7224 abort ();
7225 ++p;
7226 }
7227
7228 /* When --disable-multilib was used but target defines
7229 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7230 to find multilib_os_dir, so skip them from output. */
7231 if (this_path[0] == '.' && this_path[1] == ':')
7232 skip = 1;
7233
7234 /* Check for matches with the multilib_exclusions. We don't bother
7235 with the '!' in either list. If any of the exclusion rules match
7236 all of its options with the select rule, we skip it. */
7237 {
7238 const char *e = multilib_exclusions;
7239 const char *this_arg;
7240
7241 while (*e != '\0')
7242 {
7243 int m = 1;
7244 /* Ignore newlines. */
7245 if (*e == '\n')
7246 {
7247 ++e;
7248 continue;
7249 }
7250
7251 /* Check the arguments. */
7252 while (*e != ';')
7253 {
7254 const char *q;
7255 int mp = 0;
7256
7257 if (*e == '\0')
7258 abort ();
7259
7260 if (! m)
7261 {
7262 ++e;
7263 continue;
7264 }
7265
7266 this_arg = e;
7267
7268 while (*e != ' ' && *e != ';')
7269 {
7270 if (*e == '\0')
7271 abort ();
7272 ++e;
7273 }
7274
7275 q = p + 1;
7276 while (*q != ';')
7277 {
7278 const char *arg;
7279 int len = e - this_arg;
7280
7281 if (*q == '\0')
7282 abort ();
7283
7284 arg = q;
7285
7286 while (*q != ' ' && *q != ';')
7287 {
7288 if (*q == '\0')
7289 abort ();
7290 ++q;
7291 }
7292
7293 if (! strncmp (arg, this_arg, (len < q - arg) ? q - arg : len) ||
7294 default_arg (this_arg, e - this_arg))
7295 {
7296 mp = 1;
7297 break;
7298 }
7299
7300 if (*q == ' ')
7301 ++q;
7302 }
7303
7304 if (! mp)
7305 m = 0;
7306
7307 if (*e == ' ')
7308 ++e;
7309 }
7310
7311 if (m)
7312 {
7313 skip = 1;
7314 break;
7315 }
7316
7317 if (*e != '\0')
7318 ++e;
7319 }
7320 }
7321
7322 if (! skip)
7323 {
7324 /* If this is a duplicate, skip it. */
7325 skip = (last_path != 0 && (unsigned int) (p - this_path) == last_path_len
7326 && ! strncmp (last_path, this_path, last_path_len));
7327
7328 last_path = this_path;
7329 last_path_len = p - this_path;
7330 }
7331
7332 /* If this directory requires any default arguments, we can skip
7333 it. We will already have printed a directory identical to
7334 this one which does not require that default argument. */
7335 if (! skip)
7336 {
7337 const char *q;
7338
7339 q = p + 1;
7340 while (*q != ';')
7341 {
7342 const char *arg;
7343
7344 if (*q == '\0')
7345 abort ();
7346
7347 if (*q == '!')
7348 arg = NULL;
7349 else
7350 arg = q;
7351
7352 while (*q != ' ' && *q != ';')
7353 {
7354 if (*q == '\0')
7355 abort ();
7356 ++q;
7357 }
7358
7359 if (arg != NULL
7360 && default_arg (arg, q - arg))
7361 {
7362 skip = 1;
7363 break;
7364 }
7365
7366 if (*q == ' ')
7367 ++q;
7368 }
7369 }
7370
7371 if (! skip)
7372 {
7373 const char *p1;
7374
7375 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7376 putchar (*p1);
7377 putchar (';');
7378 }
7379
7380 ++p;
7381 while (*p != ';')
7382 {
7383 int use_arg;
7384
7385 if (*p == '\0')
7386 abort ();
7387
7388 if (skip)
7389 {
7390 ++p;
7391 continue;
7392 }
7393
7394 use_arg = *p != '!';
7395
7396 if (use_arg)
7397 putchar ('@');
7398
7399 while (*p != ' ' && *p != ';')
7400 {
7401 if (*p == '\0')
7402 abort ();
7403 if (use_arg)
7404 putchar (*p);
7405 ++p;
7406 }
7407
7408 if (*p == ' ')
7409 ++p;
7410 }
7411
7412 if (! skip)
7413 {
7414 /* If there are extra options, print them now. */
7415 if (multilib_extra && *multilib_extra)
7416 {
7417 int print_at = TRUE;
7418 const char *q;
7419
7420 for (q = multilib_extra; *q != '\0'; q++)
7421 {
7422 if (*q == ' ')
7423 print_at = TRUE;
7424 else
7425 {
7426 if (print_at)
7427 putchar ('@');
7428 putchar (*q);
7429 print_at = FALSE;
7430 }
7431 }
7432 }
7433
7434 putchar ('\n');
7435 }
7436
7437 ++p;
7438 }
7439}
7440
7441/* if-exists built-in spec function.
7442
7443 Checks to see if the file specified by the absolute pathname in
7444 ARGS exists. Returns that pathname if found.
7445
7446 The usual use for this function is to check for a library file
7447 (whose name has been expanded with %s). */
7448
7449static const char *
7450if_exists_spec_function (int argc, const char **argv)
7451{
7452 /* Must have only one argument. */
7453 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7454 return argv[0];
7455
7456 return NULL;
7457}
7458
7459/* if-exists-else built-in spec function.
7460
7461 This is like if-exists, but takes an additional argument which
7462 is returned if the first argument does not exist. */
7463
7464static const char *
7465if_exists_else_spec_function (int argc, const char **argv)
7466{
7467 /* Must have exactly two arguments. */
7468 if (argc != 2)
7469 return NULL;
7470
7471 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7472 return argv[0];
7473
7474 return argv[1];
7475}
|