1/* Compiler driver program that can handle many languages.
2 Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation,
4 Inc.
5
6This file is part of GCC.
7
8GCC is free software; you can redistribute it and/or modify it under
9the terms of the GNU General Public License as published by the Free
10Software Foundation; either version 2, or (at your option) any later
11version.
12
13GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14WARRANTY; without even the implied warranty of MERCHANTABILITY or
15FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16for more details.
17
18You should have received a copy of the GNU General Public License
19along with GCC; see the file COPYING. If not, write to the Free
20Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
2102110-1301, USA.
22
23This paragraph is here to try to keep Sun CC from dying.
24The number of chars here seems crucial!!!! */
25
26/* $FreeBSD: stable/10/contrib/gcc/gcc.c 259563 2013-12-18 19:07:29Z pfg $ */
27
28/* This program is the user interface to the C compiler and possibly to
29other compilers. It is used because compilation is a complicated procedure
30which involves running several programs and passing temporary files between
31them, forwarding the users switches to those programs selectively,
32and deleting the temporary files at the end.
33
34CC recognizes how to compile each input file by suffixes in the file names.
35Once it knows which kind of compilation to perform, the procedure for
36compilation is specified by a string called a "spec". */
37
38/* A Short Introduction to Adding a Command-Line Option.
39
40 Before adding a command-line option, consider if it is really
41 necessary. Each additional command-line option adds complexity and
42 is difficult to remove in subsequent versions.
43
44 In the following, consider adding the command-line argument
45 `--bar'.
46
47 1. Each command-line option is specified in the specs file. The
48 notation is described below in the comment entitled "The Specs
49 Language". Read it.
50
51 2. In this file, add an entry to "option_map" equating the long
52 `--' argument version and any shorter, single letter version. Read
53 the comments in the declaration of "struct option_map" for an
54 explanation. Do not omit the first `-'.
55
56 3. Look in the "specs" file to determine which program or option
57 list should be given the argument, e.g., "cc1_options". Add the
58 appropriate syntax for the shorter option version to the
59 corresponding "const char *" entry in this file. Omit the first
60 `-' from the option. For example, use `-bar', rather than `--bar'.
61
62 4. If the argument takes an argument, e.g., `--baz argument1',
63 modify either DEFAULT_SWITCH_TAKES_ARG or
64 DEFAULT_WORD_SWITCH_TAKES_ARG in gcc.h. Omit the first `-'
65 from `--baz'.
66
67 5. Document the option in this file's display_help(). If the
68 option is passed to a subprogram, modify its corresponding
69 function, e.g., cppinit.c:print_help() or toplev.c:display_help(),
70 instead.
71
72 6. Compile and test. Make sure that your new specs file is being
73 read. For example, use a debugger to investigate the value of
74 "specs_file" in main(). */
75
76#include "config.h"
77#include "system.h"
78#include "coretypes.h"
79#include "multilib.h" /* before tm.h */
80#include "tm.h"
81#include <signal.h>
82#if ! defined( SIGCHLD ) && defined( SIGCLD )
83# define SIGCHLD SIGCLD
84#endif
85#include "xregex.h"
86#include "obstack.h"
87#include "intl.h"
88#include "prefix.h"
89#include "gcc.h"
90#include "flags.h"
91#include "opts.h"
92
93/* By default there is no special suffix for target executables. */
94/* FIXME: when autoconf is fixed, remove the host check - dj */
95#if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
96#define HAVE_TARGET_EXECUTABLE_SUFFIX
97#endif
98
99/* By default there is no special suffix for host executables. */
100#ifdef HOST_EXECUTABLE_SUFFIX
101#define HAVE_HOST_EXECUTABLE_SUFFIX
102#else
103#define HOST_EXECUTABLE_SUFFIX ""
104#endif
105
106/* By default, the suffix for target object files is ".o". */
107#ifdef TARGET_OBJECT_SUFFIX
108#define HAVE_TARGET_OBJECT_SUFFIX
109#else
110#define TARGET_OBJECT_SUFFIX ".o"
111#endif
112
113static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
114
115/* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
116#ifndef LIBRARY_PATH_ENV
117#define LIBRARY_PATH_ENV "LIBRARY_PATH"
118#endif
119
120#ifndef HAVE_KILL
121#define kill(p,s) raise(s)
122#endif
123
124/* If a stage of compilation returns an exit status >= 1,
125 compilation of that file ceases. */
126
127#define MIN_FATAL_STATUS 1
128
129/* Flag set by cppspec.c to 1. */
130int is_cpp_driver;
131
132/* Flag saying to pass the greatest exit code returned by a sub-process
133 to the calling program. */
134static int pass_exit_codes;
135
136/* Definition of string containing the arguments given to configure. */
137#include "configargs.h"
138
139/* Flag saying to print the directories gcc will search through looking for
140 programs, libraries, etc. */
141
142static int print_search_dirs;
143
144/* Flag saying to print the full filename of this file
145 as found through our usual search mechanism. */
146
147static const char *print_file_name = NULL;
148
149/* As print_file_name, but search for executable file. */
150
151static const char *print_prog_name = NULL;
152
153/* Flag saying to print the relative path we'd use to
154 find libgcc.a given the current compiler flags. */
155
156static int print_multi_directory;
157
158/* Flag saying to print the relative path we'd use to
159 find OS libraries given the current compiler flags. */
160
161static int print_multi_os_directory;
162
163/* Flag saying to print the list of subdirectories and
164 compiler flags used to select them in a standard form. */
165
166static int print_multi_lib;
167
168/* Flag saying to print the command line options understood by gcc and its
169 sub-processes. */
170
171static int print_help_list;
172
173/* Flag indicating whether we should print the command and arguments */
174
175static int verbose_flag;
176
177/* Flag indicating whether we should ONLY print the command and
178 arguments (like verbose_flag) without executing the command.
179 Displayed arguments are quoted so that the generated command
180 line is suitable for execution. This is intended for use in
181 shell scripts to capture the driver-generated command line. */
182static int verbose_only_flag;
183
184/* Flag indicating to print target specific command line options. */
185
186static int target_help_flag;
187
188/* Flag indicating whether we should report subprocess execution times
189 (if this is supported by the system - see pexecute.c). */
190
191static int report_times;
192
193/* Nonzero means place this string before uses of /, so that include
194 and library files can be found in an alternate location. */
195
196#ifdef TARGET_SYSTEM_ROOT
197static const char *target_system_root = TARGET_SYSTEM_ROOT;
198#else
199static const char *target_system_root = 0;
200#endif
201
202/* Nonzero means pass the updated target_system_root to the compiler. */
203
204static int target_system_root_changed;
205
206/* Nonzero means append this string to target_system_root. */
207
208static const char *target_sysroot_suffix = 0;
209
210/* Nonzero means append this string to target_system_root for headers. */
211
212static const char *target_sysroot_hdrs_suffix = 0;
213
214/* Nonzero means write "temp" files in source directory
215 and use the source file's name in them, and don't delete them. */
216
217static int save_temps_flag;
218
219/* Nonzero means pass multiple source files to the compiler at one time. */
220
221static int combine_flag = 0;
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_DIRECTORY_STRUCTURE
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/* Forward declaration for prototypes. */
284struct path_prefix;
285struct prefix_list;
286
287static void init_spec (void);
288static void store_arg (const char *, int, int);
289static char *load_specs (const char *);
290static void read_specs (const char *, int);
291static void set_spec (const char *, const char *);
292static struct compiler *lookup_compiler (const char *, size_t, const char *);
293static char *build_search_list (const struct path_prefix *, const char *,
294 bool, bool);
295static void putenv_from_prefixes (const struct path_prefix *, const char *,
296 bool);
297static int access_check (const char *, int);
298static char *find_a_file (const struct path_prefix *, const char *, int, bool);
299static void add_prefix (struct path_prefix *, const char *, const char *,
300 int, int, int);
301static void add_sysrooted_prefix (struct path_prefix *, const char *,
302 const char *, int, int, int);
303static void translate_options (int *, const char *const **);
304static char *skip_whitespace (char *);
305static void delete_if_ordinary (const char *);
306static void delete_temp_files (void);
307static void delete_failure_queue (void);
308static void clear_failure_queue (void);
309static int check_live_switch (int, int);
310static const char *handle_braces (const char *);
311static inline bool input_suffix_matches (const char *, const char *);
312static inline bool switch_matches (const char *, const char *, int);
313static inline void mark_matching_switches (const char *, const char *, int);
314static inline void process_marked_switches (void);
315static const char *process_brace_body (const char *, const char *, const char *, int, int);
316static const struct spec_function *lookup_spec_function (const char *);
317static const char *eval_spec_function (const char *, const char *);
318static const char *handle_spec_function (const char *);
319static char *save_string (const char *, int);
320static void set_collect_gcc_options (void);
321static int do_spec_1 (const char *, int, const char *);
322static int do_spec_2 (const char *);
323static void do_option_spec (const char *, const char *);
324static void do_self_spec (const char *);
325static const char *find_file (const char *);
326static int is_directory (const char *, bool);
327static const char *validate_switches (const char *);
328static void validate_all_switches (void);
329static inline void validate_switches_from_spec (const char *);
330static void give_switch (int, int);
331static int used_arg (const char *, int);
332static int default_arg (const char *, int);
333static void set_multilib_dir (void);
334static void print_multilib_info (void);
335static void perror_with_name (const char *);
336static void fatal_ice (const char *, ...) ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN;
337static void notice (const char *, ...) ATTRIBUTE_PRINTF_1;
338static void display_help (void);
339static void add_preprocessor_option (const char *, int);
340static void add_assembler_option (const char *, int);
341static void add_linker_option (const char *, int);
342static void process_command (int, const char **);
343static int execute (void);
344static void alloc_args (void);
345static void clear_args (void);
346static void fatal_error (int);
347#if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
348static void init_gcc_specs (struct obstack *, const char *, const char *,
349 const char *);
350#endif
351#if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
352static const char *convert_filename (const char *, int, int);
353#endif
354
355static const char *if_exists_spec_function (int, const char **);
356static const char *if_exists_else_spec_function (int, const char **);
357static const char *replace_outfile_spec_function (int, const char **);
358static const char *version_compare_spec_function (int, const char **);
359static const char *include_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 "[.0-9A-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), -isystem (made from COMPILER_PATH
449 and -B options) and -imultilib 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 %R Output the concatenation of target_system_root and
471 target_sysroot_suffix.
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/* mudflap specs */
601#ifndef MFWRAP_SPEC
602/* XXX: valid only for GNU ld */
603/* XXX: should exactly match hooks provided by libmudflap.a */
604#define MFWRAP_SPEC " %{static: %{fmudflap|fmudflapth: \
605 --wrap=malloc --wrap=free --wrap=calloc --wrap=realloc\
606 --wrap=mmap --wrap=munmap --wrap=alloca\
607} %{fmudflapth: --wrap=pthread_create\
608}} %{fmudflap|fmudflapth: --wrap=main}"
609#endif
610#ifndef MFLIB_SPEC
611#define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}"
612#endif
613
614/* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
615 included. */
616#ifndef LIBGCC_SPEC
617#if defined(REAL_LIBGCC_SPEC)
618#define LIBGCC_SPEC REAL_LIBGCC_SPEC
619#elif defined(LINK_LIBGCC_SPECIAL_1)
620/* Have gcc do the search for libgcc.a. */
621#define LIBGCC_SPEC "libgcc.a%s"
622#else
623#define LIBGCC_SPEC "-lgcc"
624#endif
625#endif
626
627/* config.h can define STARTFILE_SPEC to override the default crt0 files. */
628#ifndef STARTFILE_SPEC
629#define STARTFILE_SPEC \
630 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
631#endif
632
633/* config.h can define SWITCHES_NEED_SPACES to control which options
634 require spaces between the option and the argument. */
635#ifndef SWITCHES_NEED_SPACES
636#define SWITCHES_NEED_SPACES ""
637#endif
638
639/* config.h can define ENDFILE_SPEC to override the default crtn files. */
640#ifndef ENDFILE_SPEC
641#define ENDFILE_SPEC ""
642#endif
643
644#ifndef LINKER_NAME
645#define LINKER_NAME "collect2"
646#endif
647
648/* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
649 to the assembler. */
650#ifndef ASM_DEBUG_SPEC
651# if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
652 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
653# define ASM_DEBUG_SPEC \
654 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
655 ? "%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}" \
656 : "%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}")
657# else
658# if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
659# define ASM_DEBUG_SPEC "%{g*:--gstabs}"
660# endif
661# if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
662# define ASM_DEBUG_SPEC "%{g*:--gdwarf2}"
663# endif
664# endif
665#endif
666#ifndef ASM_DEBUG_SPEC
667# define ASM_DEBUG_SPEC ""
668#endif
669
670/* Here is the spec for running the linker, after compiling all files. */
671
672/* This is overridable by the target in case they need to specify the
673 -lgcc and -lc order specially, yet not require them to override all
674 of LINK_COMMAND_SPEC. */
675#ifndef LINK_GCC_C_SEQUENCE_SPEC
676#define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
677#endif
678
679#ifndef LINK_SSP_SPEC
680#ifdef TARGET_LIBC_PROVIDES_SSP
681#define LINK_SSP_SPEC "%{fstack-protector:}"
682#else
683#define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}"
684#endif
685#endif
686
687#ifndef LINK_PIE_SPEC
688#ifdef HAVE_LD_PIE
689#define LINK_PIE_SPEC "%{pie:-pie} "
690#else
691#define LINK_PIE_SPEC "%{pie:} "
692#endif
693#endif
694
695/* -u* was put back because both BSD and SysV seem to support it. */
696/* %{static:} simply prevents an error message if the target machine
697 doesn't handle -static. */
698/* We want %{T*} after %{L*} and %D so that it can be used to specify linker
699 scripts which exist in user specified directories, or in standard
700 directories. */
701#ifndef LINK_COMMAND_SPEC
702#ifndef FREEBSD_NATIVE
703#define LINK_COMMAND_SPEC "\
704%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
705 %(linker) %l " LINK_PIE_SPEC "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\
706 %{s} %{t} %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
707 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
708 %{fopenmp:%:include(libgomp.spec)%(link_gomp)} %(mflib)\
709 %{fprofile-arcs|fprofile-generate|coverage:-lgcov}\
710 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
711 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
712#else
713#define LINK_COMMAND_SPEC "\
714%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
715 %(linker) %l " LINK_PIE_SPEC "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\
716 %{s} %{t} %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
717 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
718 %{fopenmp: -lgomp} %(mflib)\
719 %{fprofile-arcs|fprofile-generate|coverage:-lgcov}\
720 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
721 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
722#endif
723#endif
724
725#ifndef LINK_LIBGCC_SPEC
726/* Generate -L options for startfile prefix list. */
727# define LINK_LIBGCC_SPEC "%D"
728#endif
729
730#ifndef STARTFILE_PREFIX_SPEC
731# define STARTFILE_PREFIX_SPEC ""
732#endif
733
734#ifndef SYSROOT_SPEC
735# define SYSROOT_SPEC "--sysroot=%R"
736#endif
737
738#ifndef SYSROOT_SUFFIX_SPEC
739# define SYSROOT_SUFFIX_SPEC ""
740#endif
741
742#ifndef SYSROOT_HEADERS_SUFFIX_SPEC
743# define SYSROOT_HEADERS_SUFFIX_SPEC ""
744#endif
745
746static const char *asm_debug;
747static const char *cpp_spec = CPP_SPEC;
748static const char *cc1_spec = CC1_SPEC;
749static const char *cc1plus_spec = CC1PLUS_SPEC;
750static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
751static const char *link_ssp_spec = LINK_SSP_SPEC;
752static const char *asm_spec = ASM_SPEC;
753static const char *asm_final_spec = ASM_FINAL_SPEC;
754static const char *link_spec = LINK_SPEC;
755static const char *lib_spec = LIB_SPEC;
756static const char *mfwrap_spec = MFWRAP_SPEC;
757static const char *mflib_spec = MFLIB_SPEC;
758static const char *link_gomp_spec = "";
759static const char *libgcc_spec = LIBGCC_SPEC;
760static const char *endfile_spec = ENDFILE_SPEC;
761static const char *startfile_spec = STARTFILE_SPEC;
762static const char *switches_need_spaces = SWITCHES_NEED_SPACES;
763static const char *linker_name_spec = LINKER_NAME;
764static const char *link_command_spec = LINK_COMMAND_SPEC;
765static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
766static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
767static const char *sysroot_spec = SYSROOT_SPEC;
768static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
769static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
770
771/* Standard options to cpp, cc1, and as, to reduce duplication in specs.
772 There should be no need to override these in target dependent files,
773 but we need to copy them to the specs file so that newer versions
774 of the GCC driver can correctly drive older tool chains with the
775 appropriate -B options. */
776
777/* When cpplib handles traditional preprocessing, get rid of this, and
778 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
779 that we default the front end language better. */
780static const char *trad_capable_cpp =
781"cc1 -E %{traditional|ftraditional|traditional-cpp:-traditional-cpp}";
782
783/* We don't wrap .d files in %W{} since a missing .d file, and
784 therefore no dependency entry, confuses make into thinking a .o
785 file that happens to exist is up-to-date. */
786static const char *cpp_unique_options =
787"%{C|CC:%{!E:%eGCC does not support -C or -CC without -E}}\
788 %{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
789 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
790 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
791 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
792 %{!E:%{!M:%{!MM:%{MD|MMD:%{o*:-MQ %*}}}}}\
793 %{remap} %{g3:-dD} %{H} %C %{D*&U*&A*} %{i*} %Z %i\
794 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
795 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
796 %{E|M|MM:%W{o*}}";
797
798/* This contains cpp options which are common with cc1_options and are passed
799 only when preprocessing only to avoid duplication. We pass the cc1 spec
800 options to the preprocessor so that it the cc1 spec may manipulate
801 options used to set target flags. Those special target flags settings may
802 in turn cause preprocessor symbols to be defined specially. */
803static const char *cpp_options =
804"%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
805 %{f*} %{g*:%{!g0:%{!fno-working-directory:-fworking-directory}}} %{O*}\
806 %{undef} %{save-temps:-fpch-preprocess}";
807
808/* This contains cpp options which are not passed when the preprocessor
809 output will be used by another program. */
810static const char *cpp_debug_options = "%{d*}";
811
812/* NB: This is shared amongst all front-ends. */
813static const char *cc1_options =
814"%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
815 %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\
816 %{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}%{!c:%{!S:-auxbase %b}}\
817 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
818 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
819 %{Qn:-fno-ident} %{--help:--help}\
820 %{--target-help:--target-help}\
821 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
822 %{fsyntax-only:-o %j} %{-param*}\
823 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\
824 %{coverage:-fprofile-arcs -ftest-coverage}";
825
826static const char *asm_options =
827"%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
828
829static const char *invoke_as =
830#ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
831"%{!S:-o %|.s |\n as %(asm_options) %|.s %A }";
832#else
833"%{!S:-o %|.s |\n as %(asm_options) %m.s %A }";
834#endif
835
836/* Some compilers have limits on line lengths, and the multilib_select
837 and/or multilib_matches strings can be very long, so we build them at
838 run time. */
839static struct obstack multilib_obstack;
840static const char *multilib_select;
841static const char *multilib_matches;
842static const char *multilib_defaults;
843static const char *multilib_exclusions;
844
845/* Check whether a particular argument is a default argument. */
846
847#ifndef MULTILIB_DEFAULTS
848#define MULTILIB_DEFAULTS { "" }
849#endif
850
851static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
852
853#ifndef DRIVER_SELF_SPECS
854#define DRIVER_SELF_SPECS ""
855#endif
856
857/* Adding -fopenmp should imply pthreads. This is particularly important
858 for targets that use different start files and suchlike. */
859#ifndef GOMP_SELF_SPECS
860#define GOMP_SELF_SPECS "%{fopenmp: -pthread}"
861#endif
862
863static const char *const driver_self_specs[] = {
864 DRIVER_SELF_SPECS, GOMP_SELF_SPECS
865};
866
867#ifndef OPTION_DEFAULT_SPECS
868#define OPTION_DEFAULT_SPECS { "", "" }
869#endif
870
871struct default_spec
872{
873 const char *name;
874 const char *spec;
875};
876
877static const struct default_spec
878 option_default_specs[] = { OPTION_DEFAULT_SPECS };
879
880struct user_specs
881{
882 struct user_specs *next;
883 const char *filename;
884};
885
886static struct user_specs *user_specs_head, *user_specs_tail;
887
888#ifndef SWITCH_TAKES_ARG
889#define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR)
890#endif
891
892#ifndef WORD_SWITCH_TAKES_ARG
893#define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
894#endif
895
896#ifdef HAVE_TARGET_EXECUTABLE_SUFFIX
897/* This defines which switches stop a full compilation. */
898#define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \
899 ((CHAR) == 'c' || (CHAR) == 'S')
900
901#ifndef SWITCH_CURTAILS_COMPILATION
902#define SWITCH_CURTAILS_COMPILATION(CHAR) \
903 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR)
904#endif
905#endif
906
907/* Record the mapping from file suffixes for compilation specs. */
908
909struct compiler
910{
911 const char *suffix; /* Use this compiler for input files
912 whose names end in this suffix. */
913
914 const char *spec; /* To use this compiler, run this spec. */
915
916 const char *cpp_spec; /* If non-NULL, substitute this spec
917 for `%C', rather than the usual
918 cpp_spec. */
919 const int combinable; /* If nonzero, compiler can deal with
920 multiple source files at once (IMA). */
921 const int needs_preprocessing; /* If nonzero, source files need to
922 be run through a preprocessor. */
923};
924
925/* Pointer to a vector of `struct compiler' that gives the spec for
926 compiling a file, based on its suffix.
927 A file that does not end in any of these suffixes will be passed
928 unchanged to the loader and nothing else will be done to it.
929
930 An entry containing two 0s is used to terminate the vector.
931
932 If multiple entries match a file, the last matching one is used. */
933
934static struct compiler *compilers;
935
936/* Number of entries in `compilers', not counting the null terminator. */
937
938static int n_compilers;
939
940/* The default list of file name suffixes and their compilation specs. */
941
942static const struct compiler default_compilers[] =
943{
944 /* Add lists of suffixes of known languages here. If those languages
945 were not present when we built the driver, we will hit these copies
946 and be given a more meaningful error than "file not used since
947 linking is not done". */
948 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
949 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
950 {".mii", "#Objective-C++", 0, 0, 0},
951 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
952 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
953 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
954 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
955 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
956 {".f", "#Fortran", 0, 0, 0}, {".for", "#Fortran", 0, 0, 0},
957 {".fpp", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
958 {".FOR", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
959 {".f90", "#Fortran", 0, 0, 0}, {".f95", "#Fortran", 0, 0, 0},
960 {".F90", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
961 {".r", "#Ratfor", 0, 0, 0},
962 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
963 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
964 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
965 /* Next come the entries for C. */
966 {".c", "@c", 0, 1, 1},
967 {"@c",
968 /* cc1 has an integrated ISO C preprocessor. We should invoke the
969 external preprocessor if -save-temps is given. */
970 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
971 %{!E:%{!M:%{!MM:\
972 %{traditional|ftraditional:\
973%eGNU C no longer supports -traditional without -E}\
974 %{!combine:\
975 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
976 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\
977 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} \
978 %(cc1_options)}\
979 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
980 cc1 %(cpp_unique_options) %(cc1_options)}}}\
981 %{!fsyntax-only:%(invoke_as)}} \
982 %{combine:\
983 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
984 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i}}\
985 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
986 cc1 %(cpp_unique_options) %(cc1_options)}}\
987 %{!fsyntax-only:%(invoke_as)}}}}}}", 0, 1, 1},
988 {"-",
989 "%{!E:%e-E or -x required when input is from standard input}\
990 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
991 {".h", "@c-header", 0, 0, 0},
992 {"@c-header",
993 /* cc1 has an integrated ISO C preprocessor. We should invoke the
994 external preprocessor if -save-temps is given. */
995 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
996 %{!E:%{!M:%{!MM:\
997 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
998 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\
999 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} \
1000 %(cc1_options)\
1001 -o %g.s %{!o*:--output-pch=%i.gch}\
1002 %W{o*:--output-pch=%*}%V}\
1003 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
1004 cc1 %(cpp_unique_options) %(cc1_options)\
1005 -o %g.s %{!o*:--output-pch=%i.gch}\
1006 %W{o*:--output-pch=%*}%V}}}}}}", 0, 0, 0},
1007 {".i", "@cpp-output", 0, 1, 0},
1008 {"@cpp-output",
1009 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 1, 0},
1010 {".s", "@assembler", 0, 1, 0},
1011 {"@assembler",
1012 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 1, 0},
1013 {".S", "@assembler-with-cpp", 0, 1, 0},
1014 {"@assembler-with-cpp",
1015#ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
1016 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
1017 %{E|M|MM:%(cpp_debug_options)}\
1018 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1019 as %(asm_debug) %(asm_options) %|.s %A }}}}"
1020#else
1021 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
1022 %{E|M|MM:%(cpp_debug_options)}\
1023 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1024 as %(asm_debug) %(asm_options) %m.s %A }}}}"
1025#endif
1026 , 0, 1, 0},
1027
1028#include "specs.h"
1029 /* Mark end of table. */
1030 {0, 0, 0, 0, 0}
1031};
1032
1033/* Number of elements in default_compilers, not counting the terminator. */
1034
1035static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
1036
1037/* A vector of options to give to the linker.
1038 These options are accumulated by %x,
1039 and substituted into the linker command with %X. */
1040static int n_linker_options;
1041static char **linker_options;
1042
1043/* A vector of options to give to the assembler.
1044 These options are accumulated by -Wa,
1045 and substituted into the assembler command with %Y. */
1046static int n_assembler_options;
1047static char **assembler_options;
1048
1049/* A vector of options to give to the preprocessor.
1050 These options are accumulated by -Wp,
1051 and substituted into the preprocessor command with %Z. */
1052static int n_preprocessor_options;
1053static char **preprocessor_options;
1054
1055/* Define how to map long options into short ones. */
1056
1057/* This structure describes one mapping. */
1058struct option_map
1059{
1060 /* The long option's name. */
1061 const char *const name;
1062 /* The equivalent short option. */
1063 const char *const equivalent;
1064 /* Argument info. A string of flag chars; NULL equals no options.
1065 a => argument required.
1066 o => argument optional.
1067 j => join argument to equivalent, making one word.
1068 * => require other text after NAME as an argument. */
1069 const char *const arg_info;
1070};
1071
1072/* This is the table of mappings. Mappings are tried sequentially
1073 for each option encountered; the first one that matches, wins. */
1074
1075static const struct option_map option_map[] =
1076 {
1077 {"--all-warnings", "-Wall", 0},
1078 {"--ansi", "-ansi", 0},
1079 {"--assemble", "-S", 0},
1080 {"--assert", "-A", "a"},
1081 {"--classpath", "-fclasspath=", "aj"},
1082 {"--bootclasspath", "-fbootclasspath=", "aj"},
1083 {"--CLASSPATH", "-fclasspath=", "aj"},
1084 {"--combine", "-combine", 0},
1085 {"--comments", "-C", 0},
1086 {"--comments-in-macros", "-CC", 0},
1087 {"--compile", "-c", 0},
1088 {"--debug", "-g", "oj"},
1089 {"--define-macro", "-D", "aj"},
1090 {"--dependencies", "-M", 0},
1091 {"--dump", "-d", "a"},
1092 {"--dumpbase", "-dumpbase", "a"},
1093 {"--encoding", "-fencoding=", "aj"},
1094 {"--entry", "-e", 0},
1095 {"--extra-warnings", "-W", 0},
1096 {"--extdirs", "-fextdirs=", "aj"},
1097 {"--for-assembler", "-Wa", "a"},
1098 {"--for-linker", "-Xlinker", "a"},
1099 {"--force-link", "-u", "a"},
1100 {"--coverage", "-coverage", 0},
1101 {"--imacros", "-imacros", "a"},
1102 {"--include", "-include", "a"},
1103 {"--include-barrier", "-I-", 0},
1104 {"--include-directory", "-I", "aj"},
1105 {"--include-directory-after", "-idirafter", "a"},
1106 {"--include-prefix", "-iprefix", "a"},
1107 {"--include-with-prefix", "-iwithprefix", "a"},
1108 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
1109 {"--include-with-prefix-after", "-iwithprefix", "a"},
1110 {"--language", "-x", "a"},
1111 {"--library-directory", "-L", "a"},
1112 {"--machine", "-m", "aj"},
1113 {"--machine-", "-m", "*j"},
1114 {"--no-integrated-cpp", "-no-integrated-cpp", 0},
1115 {"--no-line-commands", "-P", 0},
1116 {"--no-precompiled-includes", "-noprecomp", 0},
1117 {"--no-standard-includes", "-nostdinc", 0},
1118 {"--no-standard-libraries", "-nostdlib", 0},
1119 {"--no-warnings", "-w", 0},
1120 {"--optimize", "-O", "oj"},
1121 {"--output", "-o", "a"},
1122 {"--output-class-directory", "-foutput-class-dir=", "ja"},
1123 {"--param", "--param", "a"},
1124 {"--pass-exit-codes", "-pass-exit-codes", 0},
1125 {"--pedantic", "-pedantic", 0},
1126 {"--pedantic-errors", "-pedantic-errors", 0},
1127 {"--pie", "-pie", 0},
1128 {"--pipe", "-pipe", 0},
1129 {"--prefix", "-B", "a"},
1130 {"--preprocess", "-E", 0},
1131 {"--print-search-dirs", "-print-search-dirs", 0},
1132 {"--print-file-name", "-print-file-name=", "aj"},
1133 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
1134 {"--print-missing-file-dependencies", "-MG", 0},
1135 {"--print-multi-lib", "-print-multi-lib", 0},
1136 {"--print-multi-directory", "-print-multi-directory", 0},
1137 {"--print-multi-os-directory", "-print-multi-os-directory", 0},
1138 {"--print-prog-name", "-print-prog-name=", "aj"},
1139 {"--profile", "-p", 0},
1140 {"--profile-blocks", "-a", 0},
1141 {"--quiet", "-q", 0},
1142 {"--resource", "-fcompile-resource=", "aj"},
1143 {"--save-temps", "-save-temps", 0},
1144 {"--shared", "-shared", 0},
1145 {"--silent", "-q", 0},
1146 {"--specs", "-specs=", "aj"},
1147 {"--static", "-static", 0},
1148 {"--std", "-std=", "aj"},
1149 {"--symbolic", "-symbolic", 0},
1150 {"--sysroot", "--sysroot=", "aj"},
1151 {"--time", "-time", 0},
1152 {"--trace-includes", "-H", 0},
1153 {"--traditional", "-traditional", 0},
1154 {"--traditional-cpp", "-traditional-cpp", 0},
1155 {"--trigraphs", "-trigraphs", 0},
1156 {"--undefine-macro", "-U", "aj"},
1157 {"--user-dependencies", "-MM", 0},
1158 {"--verbose", "-v", 0},
1159 {"--warn-", "-W", "*j"},
1160 {"--write-dependencies", "-MD", 0},
1161 {"--write-user-dependencies", "-MMD", 0},
1162 {"--", "-f", "*j"}
1163 };
1164
1165
1166#ifdef TARGET_OPTION_TRANSLATE_TABLE
1167static const struct {
1168 const char *const option_found;
1169 const char *const replacements;
1170} target_option_translations[] =
1171{
1172 TARGET_OPTION_TRANSLATE_TABLE,
1173 { 0, 0 }
1174};
1175#endif
1176
1177/* Translate the options described by *ARGCP and *ARGVP.
1178 Make a new vector and store it back in *ARGVP,
1179 and store its length in *ARGVC. */
1180
1181static void
1182translate_options (int *argcp, const char *const **argvp)
1183{
1184 int i;
1185 int argc = *argcp;
1186 const char *const *argv = *argvp;
1187 int newvsize = (argc + 2) * 2 * sizeof (const char *);
1188 const char **newv = xmalloc (newvsize);
1189 int newindex = 0;
1190
1191 i = 0;
1192 newv[newindex++] = argv[i++];
1193
1194 while (i < argc)
1195 {
1196#ifdef TARGET_OPTION_TRANSLATE_TABLE
1197 int tott_idx;
1198
1199 for (tott_idx = 0;
1200 target_option_translations[tott_idx].option_found;
1201 tott_idx++)
1202 {
1203 if (strcmp (target_option_translations[tott_idx].option_found,
1204 argv[i]) == 0)
1205 {
1206 int spaces = 1;
1207 const char *sp;
1208 char *np;
1209
1210 for (sp = target_option_translations[tott_idx].replacements;
1211 *sp; sp++)
1212 {
1213 if (*sp == ' ')
1214 spaces ++;
1215 }
1216
1217 newvsize += spaces * sizeof (const char *);
1218 newv = xrealloc (newv, newvsize);
1219
1220 sp = target_option_translations[tott_idx].replacements;
1221 np = xstrdup (sp);
1222
1223 while (1)
1224 {
1225 while (*np == ' ')
1226 np++;
1227 if (*np == 0)
1228 break;
1229 newv[newindex++] = np;
1230 while (*np != ' ' && *np)
1231 np++;
1232 if (*np == 0)
1233 break;
1234 *np++ = 0;
1235 }
1236
1237 i ++;
1238 break;
1239 }
1240 }
1241 if (target_option_translations[tott_idx].option_found)
1242 continue;
1243#endif
1244
1245 /* Translate -- options. */
1246 if (argv[i][0] == '-' && argv[i][1] == '-')
1247 {
1248 size_t j;
1249 /* Find a mapping that applies to this option. */
1250 for (j = 0; j < ARRAY_SIZE (option_map); j++)
1251 {
1252 size_t optlen = strlen (option_map[j].name);
1253 size_t arglen = strlen (argv[i]);
1254 size_t complen = arglen > optlen ? optlen : arglen;
1255 const char *arginfo = option_map[j].arg_info;
1256
1257 if (arginfo == 0)
1258 arginfo = "";
1259
1260 if (!strncmp (argv[i], option_map[j].name, complen))
1261 {
1262 const char *arg = 0;
1263
1264 if (arglen < optlen)
1265 {
1266 size_t k;
1267 for (k = j + 1; k < ARRAY_SIZE (option_map); k++)
1268 if (strlen (option_map[k].name) >= arglen
1269 && !strncmp (argv[i], option_map[k].name, arglen))
1270 {
1271 error ("ambiguous abbreviation %s", argv[i]);
1272 break;
1273 }
1274
1275 if (k != ARRAY_SIZE (option_map))
1276 break;
1277 }
1278
1279 if (arglen > optlen)
1280 {
1281 /* If the option has an argument, accept that. */
1282 if (argv[i][optlen] == '=')
1283 arg = argv[i] + optlen + 1;
1284
1285 /* If this mapping requires extra text at end of name,
1286 accept that as "argument". */
1287 else if (strchr (arginfo, '*') != 0)
1288 arg = argv[i] + optlen;
1289
1290 /* Otherwise, extra text at end means mismatch.
1291 Try other mappings. */
1292 else
1293 continue;
1294 }
1295
1296 else if (strchr (arginfo, '*') != 0)
1297 {
1298 error ("incomplete '%s' option", option_map[j].name);
1299 break;
1300 }
1301
1302 /* Handle arguments. */
1303 if (strchr (arginfo, 'a') != 0)
1304 {
1305 if (arg == 0)
1306 {
1307 if (i + 1 == argc)
1308 {
1309 error ("missing argument to '%s' option",
1310 option_map[j].name);
1311 break;
1312 }
1313
1314 arg = argv[++i];
1315 }
1316 }
1317 else if (strchr (arginfo, '*') != 0)
1318 ;
1319 else if (strchr (arginfo, 'o') == 0)
1320 {
1321 if (arg != 0)
1322 error ("extraneous argument to '%s' option",
1323 option_map[j].name);
1324 arg = 0;
1325 }
1326
1327 /* Store the translation as one argv elt or as two. */
1328 if (arg != 0 && strchr (arginfo, 'j') != 0)
1329 newv[newindex++] = concat (option_map[j].equivalent, arg,
1330 NULL);
1331 else if (arg != 0)
1332 {
1333 newv[newindex++] = option_map[j].equivalent;
1334 newv[newindex++] = arg;
1335 }
1336 else
1337 newv[newindex++] = option_map[j].equivalent;
1338
1339 break;
1340 }
1341 }
1342 i++;
1343 }
1344
1345 /* Handle old-fashioned options--just copy them through,
1346 with their arguments. */
1347 else if (argv[i][0] == '-')
1348 {
1349 const char *p = argv[i] + 1;
1350 int c = *p;
1351 int nskip = 1;
1352
1353 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
1354 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
1355 else if (WORD_SWITCH_TAKES_ARG (p))
1356 nskip += WORD_SWITCH_TAKES_ARG (p);
1357 else if ((c == 'B' || c == 'b' || c == 'x')
1358 && p[1] == 0)
1359 nskip += 1;
1360 else if (! strcmp (p, "Xlinker"))
1361 nskip += 1;
1362 else if (! strcmp (p, "Xpreprocessor"))
1363 nskip += 1;
1364 else if (! strcmp (p, "Xassembler"))
1365 nskip += 1;
1366
1367 /* Watch out for an option at the end of the command line that
1368 is missing arguments, and avoid skipping past the end of the
1369 command line. */
1370 if (nskip + i > argc)
1371 nskip = argc - i;
1372
1373 while (nskip > 0)
1374 {
1375 newv[newindex++] = argv[i++];
1376 nskip--;
1377 }
1378 }
1379 else
1380 /* Ordinary operands, or +e options. */
1381 newv[newindex++] = argv[i++];
1382 }
1383
1384 newv[newindex] = 0;
1385
1386 *argvp = newv;
1387 *argcp = newindex;
1388}
1389
1390static char *
1391skip_whitespace (char *p)
1392{
1393 while (1)
1394 {
1395 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1396 be considered whitespace. */
1397 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1398 return p + 1;
1399 else if (*p == '\n' || *p == ' ' || *p == '\t')
1400 p++;
1401 else if (*p == '#')
1402 {
1403 while (*p != '\n')
1404 p++;
1405 p++;
1406 }
1407 else
1408 break;
1409 }
1410
1411 return p;
1412}
1413/* Structures to keep track of prefixes to try when looking for files. */
1414
1415struct prefix_list
1416{
1417 const char *prefix; /* String to prepend to the path. */
1418 struct prefix_list *next; /* Next in linked list. */
1419 int require_machine_suffix; /* Don't use without machine_suffix. */
1420 /* 2 means try both machine_suffix and just_machine_suffix. */
1421 int priority; /* Sort key - priority within list. */
1422 int os_multilib; /* 1 if OS multilib scheme should be used,
1423 0 for GCC multilib scheme. */
1424};
1425
1426struct path_prefix
1427{
1428 struct prefix_list *plist; /* List of prefixes to try */
1429 int max_len; /* Max length of a prefix in PLIST */
1430 const char *name; /* Name of this list (used in config stuff) */
1431};
1432
1433/* List of prefixes to try when looking for executables. */
1434
1435static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1436
1437/* List of prefixes to try when looking for startup (crt0) files. */
1438
1439static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1440
1441/* List of prefixes to try when looking for include files. */
1442
1443static struct path_prefix include_prefixes = { 0, 0, "include" };
1444
1445/* Suffix to attach to directories searched for commands.
1446 This looks like `MACHINE/VERSION/'. */
1447
1448static const char *machine_suffix = 0;
1449
1450/* Suffix to attach to directories searched for commands.
1451 This is just `MACHINE/'. */
1452
1453static const char *just_machine_suffix = 0;
1454
1455/* Adjusted value of GCC_EXEC_PREFIX envvar. */
1456
1457static const char *gcc_exec_prefix;
1458
1459/* Adjusted value of standard_libexec_prefix. */
1460
1461static const char *gcc_libexec_prefix;
1462
1463/* Default prefixes to attach to command names. */
1464
1465#ifndef STANDARD_STARTFILE_PREFIX_1
1466#define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1467#endif
1468#ifndef STANDARD_STARTFILE_PREFIX_2
1469#define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1470#endif
1471
1472#ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1473#undef MD_EXEC_PREFIX
1474#undef MD_STARTFILE_PREFIX
1475#undef MD_STARTFILE_PREFIX_1
1476#endif
1477
1478/* If no prefixes defined, use the null string, which will disable them. */
1479#ifndef MD_EXEC_PREFIX
1480#define MD_EXEC_PREFIX ""
1481#endif
1482#ifndef MD_STARTFILE_PREFIX
1483#define MD_STARTFILE_PREFIX ""
1484#endif
1485#ifndef MD_STARTFILE_PREFIX_1
1486#define MD_STARTFILE_PREFIX_1 ""
1487#endif
1488
1489static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1490static const char *const standard_exec_prefix_1 = "/usr/libexec/gcc/";
1491static const char *const standard_exec_prefix_2 = "/usr/lib/gcc/";
1492static const char *md_exec_prefix = MD_EXEC_PREFIX;
1493
1494static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1495static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1496static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1497static const char *const standard_startfile_prefix_1
1498 = STANDARD_STARTFILE_PREFIX_1;
1499static const char *const standard_startfile_prefix_2
1500 = STANDARD_STARTFILE_PREFIX_2;
1501
1502static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1503static const char *tooldir_prefix;
1504
1505#ifndef FREEBSD_NATIVE
1506static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1507#endif /* not FREEBSD_NATIVE */
1508
1509static const char *standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1510
1511/* Subdirectory to use for locating libraries. Set by
1512 set_multilib_dir based on the compilation options. */
1513
1514static const char *multilib_dir;
1515
1516/* Subdirectory to use for locating libraries in OS conventions. Set by
1517 set_multilib_dir based on the compilation options. */
1518
1519static const char *multilib_os_dir;
1520
1521/* Structure to keep track of the specs that have been defined so far.
1522 These are accessed using %(specname) or %[specname] in a compiler
1523 or link spec. */
1524
1525struct spec_list
1526{
1527 /* The following 2 fields must be first */
1528 /* to allow EXTRA_SPECS to be initialized */
1529 const char *name; /* name of the spec. */
1530 const char *ptr; /* available ptr if no static pointer */
1531
1532 /* The following fields are not initialized */
1533 /* by EXTRA_SPECS */
1534 const char **ptr_spec; /* pointer to the spec itself. */
1535 struct spec_list *next; /* Next spec in linked list. */
1536 int name_len; /* length of the name */
1537 int alloc_p; /* whether string was allocated */
1538};
1539
1540#define INIT_STATIC_SPEC(NAME,PTR) \
1541{ NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1542
1543/* List of statically defined specs. */
1544static struct spec_list static_specs[] =
1545{
1546 INIT_STATIC_SPEC ("asm", &asm_spec),
1547 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1548 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1549 INIT_STATIC_SPEC ("asm_options", &asm_options),
1550 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1551 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1552 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1553 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1554 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1555 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1556 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1557 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1558 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1559 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1560 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec),
1561 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1562 INIT_STATIC_SPEC ("link", &link_spec),
1563 INIT_STATIC_SPEC ("lib", &lib_spec),
1564 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec),
1565 INIT_STATIC_SPEC ("mflib", &mflib_spec),
1566 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec),
1567 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1568 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1569 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces),
1570 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1571 INIT_STATIC_SPEC ("version", &compiler_version),
1572 INIT_STATIC_SPEC ("multilib", &multilib_select),
1573 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1574 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1575 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1576 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1577 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1578 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1579 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1580 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1581 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1582 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1583 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1584 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec),
1585 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1586 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1587};
1588
1589#ifdef EXTRA_SPECS /* additional specs needed */
1590/* Structure to keep track of just the first two args of a spec_list.
1591 That is all that the EXTRA_SPECS macro gives us. */
1592struct spec_list_1
1593{
1594 const char *const name;
1595 const char *const ptr;
1596};
1597
1598static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1599static struct spec_list *extra_specs = (struct spec_list *) 0;
1600#endif
1601
1602/* List of dynamically allocates specs that have been defined so far. */
1603
1604static struct spec_list *specs = (struct spec_list *) 0;
1605
1606/* List of static spec functions. */
1607
1608static const struct spec_function static_spec_functions[] =
1609{
1610 { "if-exists", if_exists_spec_function },
1611 { "if-exists-else", if_exists_else_spec_function },
1612 { "replace-outfile", replace_outfile_spec_function },
1613 { "version-compare", version_compare_spec_function },
1614 { "include", include_spec_function },
1615#ifdef EXTRA_SPEC_FUNCTIONS
1616 EXTRA_SPEC_FUNCTIONS
1617#endif
1618 { 0, 0 }
1619};
1620
1621static int processing_spec_function;
1622
1623/* Add appropriate libgcc specs to OBSTACK, taking into account
1624 various permutations of -shared-libgcc, -shared, and such. */
1625
1626#if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1627
1628#ifndef USE_LD_AS_NEEDED
1629#define USE_LD_AS_NEEDED 0
1630#endif
1631
1632static void
1633init_gcc_specs (struct obstack *obstack, const char *shared_name,
1634 const char *static_name, const char *eh_name)
1635{
1636 char *buf;
1637
1638 buf = concat ("%{pg:", static_name, " ", eh_name, "} %{!pg:",
1639 "%{static|static-libgcc|pg:", static_name, " ", eh_name, "}"
1640 "%{!static:%{!static-libgcc:"
1641#if USE_LD_AS_NEEDED
1642 "%{!shared-libgcc:",
1643 static_name, " --as-needed ", shared_name, " --no-as-needed"
1644 "}"
1645 "%{shared-libgcc:",
1646 shared_name, "%{!shared: ", static_name, "}"
1647 "}"
1648#else
1649 "%{!shared:"
1650 "%{!shared-libgcc:", static_name, " ", eh_name, "}"
1651 "%{shared-libgcc:", shared_name, " ", static_name, "}"
1652 "}"
1653#ifdef LINK_EH_SPEC
1654 "%{shared:"
1655 "%{shared-libgcc:", shared_name, "}"
1656 "%{!shared-libgcc:", static_name, "}"
1657 "}"
1658#else
1659 "%{shared:", shared_name, "}"
1660#endif
1661#endif
1662 "}}}", NULL);
1663
1664 obstack_grow (obstack, buf, strlen (buf));
1665 free (buf);
1666}
1667#endif /* ENABLE_SHARED_LIBGCC */
1668
1669/* Initialize the specs lookup routines. */
1670
1671static void
1672init_spec (void)
1673{
1674 struct spec_list *next = (struct spec_list *) 0;
1675 struct spec_list *sl = (struct spec_list *) 0;
1676 int i;
1677
1678 if (specs)
1679 return; /* Already initialized. */
1680
1681 if (verbose_flag)
1682 notice ("Using built-in specs.\n");
1683
1684#ifdef EXTRA_SPECS
1685 extra_specs = xcalloc (sizeof (struct spec_list),
1686 ARRAY_SIZE (extra_specs_1));
1687
1688 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1689 {
1690 sl = &extra_specs[i];
1691 sl->name = extra_specs_1[i].name;
1692 sl->ptr = extra_specs_1[i].ptr;
1693 sl->next = next;
1694 sl->name_len = strlen (sl->name);
1695 sl->ptr_spec = &sl->ptr;
1696 next = sl;
1697 }
1698#endif
1699
1700 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
1701 on ?: in file-scope variable initializations. */
1702 asm_debug = ASM_DEBUG_SPEC;
1703
1704 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1705 {
1706 sl = &static_specs[i];
1707 sl->next = next;
1708 next = sl;
1709 }
1710
1711#if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1712 /* ??? If neither -shared-libgcc nor --static-libgcc was
1713 seen, then we should be making an educated guess. Some proposed
1714 heuristics for ELF include:
1715
1716 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1717 program will be doing dynamic loading, which will likely
1718 need the shared libgcc.
1719
1720 (2) If "-ldl", then it's also a fair bet that we're doing
1721 dynamic loading.
1722
1723 (3) For each ET_DYN we're linking against (either through -lfoo
1724 or /some/path/foo.so), check to see whether it or one of
1725 its dependencies depends on a shared libgcc.
1726
1727 (4) If "-shared"
1728
1729 If the runtime is fixed to look for program headers instead
1730 of calling __register_frame_info at all, for each object,
1731 use the shared libgcc if any EH symbol referenced.
1732
1733 If crtstuff is fixed to not invoke __register_frame_info
1734 automatically, for each object, use the shared libgcc if
1735 any non-empty unwind section found.
1736
1737 Doing any of this probably requires invoking an external program to
1738 do the actual object file scanning. */
1739 {
1740 const char *p = libgcc_spec;
1741 int in_sep = 1;
1742
1743 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1744 when given the proper command line arguments. */
1745 while (*p)
1746 {
1747 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1748 {
1749 init_gcc_specs (&obstack,
1750 "-lgcc_s"
1751#ifdef USE_LIBUNWIND_EXCEPTIONS
1752 " -lunwind"
1753#endif
1754 ,
1755#ifdef FREEBSD_NATIVE
1756 LIBGCC_STATIC_LIB_SPEC,
1757 LIBGCC_EH_STATIC_LIB_SPEC
1758#else
1759 "-lgcc",
1760 "-lgcc_eh"
1761#endif
1762#ifdef USE_LIBUNWIND_EXCEPTIONS
1763# ifdef HAVE_LD_STATIC_DYNAMIC
1764 " %{!static:-Bstatic} -lunwind %{!static:-Bdynamic}"
1765# else
1766 " -lunwind"
1767# endif
1768#endif
1769 );
1770
1771 p += 5;
1772 in_sep = 0;
1773 }
1774 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1775 {
1776 /* Ug. We don't know shared library extensions. Hope that
1777 systems that use this form don't do shared libraries. */
1778 init_gcc_specs (&obstack,
1779 "-lgcc_s",
1780 "libgcc.a%s",
1781 "libgcc_eh.a%s"
1782#ifdef USE_LIBUNWIND_EXCEPTIONS
1783 " -lunwind"
1784#endif
1785 );
1786 p += 10;
1787 in_sep = 0;
1788 }
1789 else
1790 {
1791 obstack_1grow (&obstack, *p);
1792 in_sep = (*p == ' ');
1793 p += 1;
1794 }
1795 }
1796
1797 obstack_1grow (&obstack, '\0');
1798 libgcc_spec = XOBFINISH (&obstack, const char *);
1799 }
1800#endif
1801#ifdef USE_AS_TRADITIONAL_FORMAT
1802 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1803 {
1804 static const char tf[] = "--traditional-format ";
1805 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1806 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1807 asm_spec = XOBFINISH (&obstack, const char *);
1808 }
1809#endif
1810#ifdef LINK_EH_SPEC
1811 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1812 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1813 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1814 link_spec = XOBFINISH (&obstack, const char *);
1815#endif
1816
1817 specs = sl;
1818}
1819
1820/* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1821 removed; If the spec starts with a + then SPEC is added to the end of the
1822 current spec. */
1823
1824static void
1825set_spec (const char *name, const char *spec)
1826{
1827 struct spec_list *sl;
1828 const char *old_spec;
1829 int name_len = strlen (name);
1830 int i;
1831
1832 /* If this is the first call, initialize the statically allocated specs. */
1833 if (!specs)
1834 {
1835 struct spec_list *next = (struct spec_list *) 0;
1836 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1837 {
1838 sl = &static_specs[i];
1839 sl->next = next;
1840 next = sl;
1841 }
1842 specs = sl;
1843 }
1844
1845 /* See if the spec already exists. */
1846 for (sl = specs; sl; sl = sl->next)
1847 if (name_len == sl->name_len && !strcmp (sl->name, name))
1848 break;
1849
1850 if (!sl)
1851 {
1852 /* Not found - make it. */
1853 sl = XNEW (struct spec_list);
1854 sl->name = xstrdup (name);
1855 sl->name_len = name_len;
1856 sl->ptr_spec = &sl->ptr;
1857 sl->alloc_p = 0;
1858 *(sl->ptr_spec) = "";
1859 sl->next = specs;
1860 specs = sl;
1861 }
1862
1863 old_spec = *(sl->ptr_spec);
1864 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1865 ? concat (old_spec, spec + 1, NULL)
1866 : xstrdup (spec));
1867
1868#ifdef DEBUG_SPECS
1869 if (verbose_flag)
1870 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1871#endif
1872
1873 /* Free the old spec. */
1874 if (old_spec && sl->alloc_p)
1875 free ((void *) old_spec);
1876
1877 sl->alloc_p = 1;
1878}
1879
1880/* Accumulate a command (program name and args), and run it. */
1881
1882/* Vector of pointers to arguments in the current line of specifications. */
1883
1884static const char **argbuf;
1885
1886/* Number of elements allocated in argbuf. */
1887
1888static int argbuf_length;
1889
1890/* Number of elements in argbuf currently in use (containing args). */
1891
1892static int argbuf_index;
1893
1894/* Position in the argbuf array containing the name of the output file
1895 (the value associated with the "-o" flag). */
1896
1897static int have_o_argbuf_index = 0;
1898
1899/* Were the options -c or -S passed. */
1900static int have_c = 0;
1901
1902/* Was the option -o passed. */
1903static int have_o = 0;
1904
1905/* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1906 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1907 it here. */
1908
1909static struct temp_name {
1910 const char *suffix; /* suffix associated with the code. */
1911 int length; /* strlen (suffix). */
1912 int unique; /* Indicates whether %g or %u/%U was used. */
1913 const char *filename; /* associated filename. */
1914 int filename_length; /* strlen (filename). */
1915 struct temp_name *next;
1916} *temp_names;
1917
1918/* Number of commands executed so far. */
1919
1920static int execution_count;
1921
1922/* Number of commands that exited with a signal. */
1923
1924static int signal_count;
1925
1926/* Name with which this program was invoked. */
1927
1928static const char *programname;
1929
1930/* Allocate the argument vector. */
1931
1932static void
1933alloc_args (void)
1934{
1935 argbuf_length = 10;
1936 argbuf = XNEWVEC (const char *, argbuf_length);
1937}
1938
1939/* Clear out the vector of arguments (after a command is executed). */
1940
1941static void
1942clear_args (void)
1943{
1944 argbuf_index = 0;
1945}
1946
1947/* Add one argument to the vector at the end.
1948 This is done when a space is seen or at the end of the line.
1949 If DELETE_ALWAYS is nonzero, the arg is a filename
1950 and the file should be deleted eventually.
1951 If DELETE_FAILURE is nonzero, the arg is a filename
1952 and the file should be deleted if this compilation fails. */
1953
1954static void
1955store_arg (const char *arg, int delete_always, int delete_failure)
1956{
1957 if (argbuf_index + 1 == argbuf_length)
1958 argbuf = xrealloc (argbuf, (argbuf_length *= 2) * sizeof (const char *));
1959
1960 argbuf[argbuf_index++] = arg;
1961 argbuf[argbuf_index] = 0;
1962
1963 if (strcmp (arg, "-o") == 0)
1964 have_o_argbuf_index = argbuf_index;
1965 if (delete_always || delete_failure)
1966 record_temp_file (arg, delete_always, delete_failure);
1967}
1968
1969/* Load specs from a file name named FILENAME, replacing occurrences of
1970 various different types of line-endings, \r\n, \n\r and just \r, with
1971 a single \n. */
1972
1973static char *
1974load_specs (const char *filename)
1975{
1976 int desc;
1977 int readlen;
1978 struct stat statbuf;
1979 char *buffer;
1980 char *buffer_p;
1981 char *specs;
1982 char *specs_p;
1983
1984 if (verbose_flag)
1985 notice ("Reading specs from %s\n", filename);
1986
1987 /* Open and stat the file. */
1988 desc = open (filename, O_RDONLY, 0);
1989 if (desc < 0)
1990 pfatal_with_name (filename);
1991 if (stat (filename, &statbuf) < 0)
1992 pfatal_with_name (filename);
1993
1994 /* Read contents of file into BUFFER. */
1995 buffer = XNEWVEC (char, statbuf.st_size + 1);
1996 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1997 if (readlen < 0)
1998 pfatal_with_name (filename);
1999 buffer[readlen] = 0;
2000 close (desc);
2001
2002 specs = XNEWVEC (char, readlen + 1);
2003 specs_p = specs;
2004 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
2005 {
2006 int skip = 0;
2007 char c = *buffer_p;
2008 if (c == '\r')
2009 {
2010 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
2011 skip = 1;
2012 else if (*(buffer_p + 1) == '\n') /* \r\n */
2013 skip = 1;
2014 else /* \r */
2015 c = '\n';
2016 }
2017 if (! skip)
2018 *specs_p++ = c;
2019 }
2020 *specs_p = '\0';
2021
2022 free (buffer);
2023 return (specs);
2024}
2025
2026/* Read compilation specs from a file named FILENAME,
2027 replacing the default ones.
2028
2029 A suffix which starts with `*' is a definition for
2030 one of the machine-specific sub-specs. The "suffix" should be
2031 *asm, *cc1, *cpp, *link, *startfile, etc.
2032 The corresponding spec is stored in asm_spec, etc.,
2033 rather than in the `compilers' vector.
2034
2035 Anything invalid in the file is a fatal error. */
2036
2037static void
2038read_specs (const char *filename, int main_p)
2039{
2040 char *buffer;
2041 char *p;
2042
2043 buffer = load_specs (filename);
2044
2045 /* Scan BUFFER for specs, putting them in the vector. */
2046 p = buffer;
2047 while (1)
2048 {
2049 char *suffix;
2050 char *spec;
2051 char *in, *out, *p1, *p2, *p3;
2052
2053 /* Advance P in BUFFER to the next nonblank nocomment line. */
2054 p = skip_whitespace (p);
2055 if (*p == 0)
2056 break;
2057
2058 /* Is this a special command that starts with '%'? */
2059 /* Don't allow this for the main specs file, since it would
2060 encourage people to overwrite it. */
2061 if (*p == '%' && !main_p)
2062 {
2063 p1 = p;
2064 while (*p && *p != '\n')
2065 p++;
2066
2067 /* Skip '\n'. */
2068 p++;
2069
2070 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
2071 && (p1[sizeof "%include" - 1] == ' '
2072 || p1[sizeof "%include" - 1] == '\t'))
2073 {
2074 char *new_filename;
2075
2076 p1 += sizeof ("%include");
2077 while (*p1 == ' ' || *p1 == '\t')
2078 p1++;
2079
2080 if (*p1++ != '<' || p[-2] != '>')
2081 fatal ("specs %%include syntax malformed after %ld characters",
2082 (long) (p1 - buffer + 1));
2083
2084 p[-2] = '\0';
2085 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
2086 read_specs (new_filename ? new_filename : p1, FALSE);
2087 continue;
2088 }
2089 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
2090 && (p1[sizeof "%include_noerr" - 1] == ' '
2091 || p1[sizeof "%include_noerr" - 1] == '\t'))
2092 {
2093 char *new_filename;
2094
2095 p1 += sizeof "%include_noerr";
2096 while (*p1 == ' ' || *p1 == '\t')
2097 p1++;
2098
2099 if (*p1++ != '<' || p[-2] != '>')
2100 fatal ("specs %%include syntax malformed after %ld characters",
2101 (long) (p1 - buffer + 1));
2102
2103 p[-2] = '\0';
2104 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
2105 if (new_filename)
2106 read_specs (new_filename, FALSE);
2107 else if (verbose_flag)
2108 notice ("could not find specs file %s\n", p1);
2109 continue;
2110 }
2111 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
2112 && (p1[sizeof "%rename" - 1] == ' '
2113 || p1[sizeof "%rename" - 1] == '\t'))
2114 {
2115 int name_len;
2116 struct spec_list *sl;
2117 struct spec_list *newsl;
2118
2119 /* Get original name. */
2120 p1 += sizeof "%rename";
2121 while (*p1 == ' ' || *p1 == '\t')
2122 p1++;
2123
2124 if (! ISALPHA ((unsigned char) *p1))
2125 fatal ("specs %%rename syntax malformed after %ld characters",
2126 (long) (p1 - buffer));
2127
2128 p2 = p1;
2129 while (*p2 && !ISSPACE ((unsigned char) *p2))
2130 p2++;
2131
2132 if (*p2 != ' ' && *p2 != '\t')
2133 fatal ("specs %%rename syntax malformed after %ld characters",
2134 (long) (p2 - buffer));
2135
2136 name_len = p2 - p1;
2137 *p2++ = '\0';
2138 while (*p2 == ' ' || *p2 == '\t')
2139 p2++;
2140
2141 if (! ISALPHA ((unsigned char) *p2))
2142 fatal ("specs %%rename syntax malformed after %ld characters",
2143 (long) (p2 - buffer));
2144
2145 /* Get new spec name. */
2146 p3 = p2;
2147 while (*p3 && !ISSPACE ((unsigned char) *p3))
2148 p3++;
2149
2150 if (p3 != p - 1)
2151 fatal ("specs %%rename syntax malformed after %ld characters",
2152 (long) (p3 - buffer));
2153 *p3 = '\0';
2154
2155 for (sl = specs; sl; sl = sl->next)
2156 if (name_len == sl->name_len && !strcmp (sl->name, p1))
2157 break;
2158
2159 if (!sl)
2160 fatal ("specs %s spec was not found to be renamed", p1);
2161
2162 if (strcmp (p1, p2) == 0)
2163 continue;
2164
2165 for (newsl = specs; newsl; newsl = newsl->next)
2166 if (strcmp (newsl->name, p2) == 0)
2167 fatal ("%s: attempt to rename spec '%s' to already defined spec '%s'",
2168 filename, p1, p2);
2169
2170 if (verbose_flag)
2171 {
2172 notice ("rename spec %s to %s\n", p1, p2);
2173#ifdef DEBUG_SPECS
2174 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
2175#endif
2176 }
2177
2178 set_spec (p2, *(sl->ptr_spec));
2179 if (sl->alloc_p)
2180 free ((void *) *(sl->ptr_spec));
2181
2182 *(sl->ptr_spec) = "";
2183 sl->alloc_p = 0;
2184 continue;
2185 }
2186 else
2187 fatal ("specs unknown %% command after %ld characters",
2188 (long) (p1 - buffer));
2189 }
2190
2191 /* Find the colon that should end the suffix. */
2192 p1 = p;
2193 while (*p1 && *p1 != ':' && *p1 != '\n')
2194 p1++;
2195
2196 /* The colon shouldn't be missing. */
2197 if (*p1 != ':')
2198 fatal ("specs file malformed after %ld characters",
2199 (long) (p1 - buffer));
2200
2201 /* Skip back over trailing whitespace. */
2202 p2 = p1;
2203 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
2204 p2--;
2205
2206 /* Copy the suffix to a string. */
2207 suffix = save_string (p, p2 - p);
2208 /* Find the next line. */
2209 p = skip_whitespace (p1 + 1);
2210 if (p[1] == 0)
2211 fatal ("specs file malformed after %ld characters",
2212 (long) (p - buffer));
2213
2214 p1 = p;
2215 /* Find next blank line or end of string. */
2216 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
2217 p1++;
2218
2219 /* Specs end at the blank line and do not include the newline. */
2220 spec = save_string (p, p1 - p);
2221 p = p1;
2222
2223 /* Delete backslash-newline sequences from the spec. */
2224 in = spec;
2225 out = spec;
2226 while (*in != 0)
2227 {
2228 if (in[0] == '\\' && in[1] == '\n')
2229 in += 2;
2230 else if (in[0] == '#')
2231 while (*in && *in != '\n')
2232 in++;
2233
2234 else
2235 *out++ = *in++;
2236 }
2237 *out = 0;
2238
2239 if (suffix[0] == '*')
2240 {
2241 if (! strcmp (suffix, "*link_command"))
2242 link_command_spec = spec;
2243 else
2244 set_spec (suffix + 1, spec);
2245 }
2246 else
2247 {
2248 /* Add this pair to the vector. */
2249 compilers
2250 = xrealloc (compilers,
2251 (n_compilers + 2) * sizeof (struct compiler));
2252
2253 compilers[n_compilers].suffix = suffix;
2254 compilers[n_compilers].spec = spec;
2255 n_compilers++;
2256 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2257 }
2258
2259 if (*suffix == 0)
2260 link_command_spec = spec;
2261 }
2262
2263 if (link_command_spec == 0)
2264 fatal ("spec file has no spec for linking");
2265}
2266
2267/* Record the names of temporary files we tell compilers to write,
2268 and delete them at the end of the run. */
2269
2270/* This is the common prefix we use to make temp file names.
2271 It is chosen once for each run of this program.
2272 It is substituted into a spec by %g or %j.
2273 Thus, all temp file names contain this prefix.
2274 In practice, all temp file names start with this prefix.
2275
2276 This prefix comes from the envvar TMPDIR if it is defined;
2277 otherwise, from the P_tmpdir macro if that is defined;
2278 otherwise, in /usr/tmp or /tmp;
2279 or finally the current directory if all else fails. */
2280
2281static const char *temp_filename;
2282
2283/* Length of the prefix. */
2284
2285static int temp_filename_length;
2286
2287/* Define the list of temporary files to delete. */
2288
2289struct temp_file
2290{
2291 const char *name;
2292 struct temp_file *next;
2293};
2294
2295/* Queue of files to delete on success or failure of compilation. */
2296static struct temp_file *always_delete_queue;
2297/* Queue of files to delete on failure of compilation. */
2298static struct temp_file *failure_delete_queue;
2299
2300/* Record FILENAME as a file to be deleted automatically.
2301 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2302 otherwise delete it in any case.
2303 FAIL_DELETE nonzero means delete it if a compilation step fails;
2304 otherwise delete it in any case. */
2305
2306void
2307record_temp_file (const char *filename, int always_delete, int fail_delete)
2308{
2309 char *const name = xstrdup (filename);
2310
2311 if (always_delete)
2312 {
2313 struct temp_file *temp;
2314 for (temp = always_delete_queue; temp; temp = temp->next)
2315 if (! strcmp (name, temp->name))
2316 goto already1;
2317
2318 temp = XNEW (struct temp_file);
2319 temp->next = always_delete_queue;
2320 temp->name = name;
2321 always_delete_queue = temp;
2322
2323 already1:;
2324 }
2325
2326 if (fail_delete)
2327 {
2328 struct temp_file *temp;
2329 for (temp = failure_delete_queue; temp; temp = temp->next)
2330 if (! strcmp (name, temp->name))
2331 goto already2;
2332
2333 temp = XNEW (struct temp_file);
2334 temp->next = failure_delete_queue;
2335 temp->name = name;
2336 failure_delete_queue = temp;
2337
2338 already2:;
2339 }
2340}
2341
2342/* Delete all the temporary files whose names we previously recorded. */
2343
2344#ifndef DELETE_IF_ORDINARY
2345#define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2346do \
2347 { \
2348 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2349 if (unlink (NAME) < 0) \
2350 if (VERBOSE_FLAG) \
2351 perror_with_name (NAME); \
2352 } while (0)
2353#endif
2354
2355static void
2356delete_if_ordinary (const char *name)
2357{
2358 struct stat st;
2359#ifdef DEBUG
2360 int i, c;
2361
2362 printf ("Delete %s? (y or n) ", name);
2363 fflush (stdout);
2364 i = getchar ();
2365 if (i != '\n')
2366 while ((c = getchar ()) != '\n' && c != EOF)
2367 ;
2368
2369 if (i == 'y' || i == 'Y')
2370#endif /* DEBUG */
2371 DELETE_IF_ORDINARY (name, st, verbose_flag);
2372}
2373
2374static void
2375delete_temp_files (void)
2376{
2377 struct temp_file *temp;
2378
2379 for (temp = always_delete_queue; temp; temp = temp->next)
2380 delete_if_ordinary (temp->name);
2381 always_delete_queue = 0;
2382}
2383
2384/* Delete all the files to be deleted on error. */
2385
2386static void
2387delete_failure_queue (void)
2388{
2389 struct temp_file *temp;
2390
2391 for (temp = failure_delete_queue; temp; temp = temp->next)
2392 delete_if_ordinary (temp->name);
2393}
2394
2395static void
2396clear_failure_queue (void)
2397{
2398 failure_delete_queue = 0;
2399}
2400
2401/* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2402 returns non-NULL.
2403 If DO_MULTI is true iterate over the paths twice, first with multilib
2404 suffix then without, otherwise iterate over the paths once without
2405 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2406 to avoid visiting the same path twice, but we could do better. For
2407 instance, /usr/lib/../lib is considered different from /usr/lib.
2408 At least EXTRA_SPACE chars past the end of the path passed to
2409 CALLBACK are available for use by the callback.
2410 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2411
2412 Returns the value returned by CALLBACK. */
2413
2414static void *
2415for_each_path (const struct path_prefix *paths,
2416 bool do_multi,
2417 size_t extra_space,
2418 void *(*callback) (char *, void *),
2419 void *callback_info)
2420{
2421 struct prefix_list *pl;
2422 const char *multi_dir = NULL;
2423 const char *multi_os_dir = NULL;
2424 const char *multi_suffix;
2425 const char *just_multi_suffix;
2426 char *path = NULL;
2427 void *ret = NULL;
2428 bool skip_multi_dir = false;
2429 bool skip_multi_os_dir = false;
2430
2431 multi_suffix = machine_suffix;
2432 just_multi_suffix = just_machine_suffix;
2433 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0)
2434 {
2435 multi_dir = concat (multilib_dir, dir_separator_str, NULL);
2436 multi_suffix = concat (multi_suffix, multi_dir, NULL);
2437 just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL);
2438 }
2439 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0)
2440 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL);
2441
2442 while (1)
2443 {
2444 size_t multi_dir_len = 0;
2445 size_t multi_os_dir_len = 0;
2446 size_t suffix_len;
2447 size_t just_suffix_len;
2448 size_t len;
2449
2450 if (multi_dir)
2451 multi_dir_len = strlen (multi_dir);
2452 if (multi_os_dir)
2453 multi_os_dir_len = strlen (multi_os_dir);
2454 suffix_len = strlen (multi_suffix);
2455 just_suffix_len = strlen (just_multi_suffix);
2456
2457 if (path == NULL)
2458 {
2459 len = paths->max_len + extra_space + 1;
2460 if (suffix_len > multi_os_dir_len)
2461 len += suffix_len;
2462 else
2463 len += multi_os_dir_len;
2464 path = XNEWVEC (char, len);
2465 }
2466
2467 for (pl = paths->plist; pl != 0; pl = pl->next)
2468 {
2469 len = strlen (pl->prefix);
2470 memcpy (path, pl->prefix, len);
2471
2472 /* Look first in MACHINE/VERSION subdirectory. */
2473 if (!skip_multi_dir)
2474 {
2475 memcpy (path + len, multi_suffix, suffix_len + 1);
2476 ret = callback (path, callback_info);
2477 if (ret)
2478 break;
2479 }
2480
2481 /* Some paths are tried with just the machine (ie. target)
2482 subdir. This is used for finding as, ld, etc. */
2483 if (!skip_multi_dir
2484 && pl->require_machine_suffix == 2)
2485 {
2486 memcpy (path + len, just_multi_suffix, just_suffix_len + 1);
2487 ret = callback (path, callback_info);
2488 if (ret)
2489 break;
2490 }
2491
2492 /* Now try the base path. */
2493 if (!pl->require_machine_suffix
2494 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir))
2495 {
2496 const char *this_multi;
2497 size_t this_multi_len;
2498
2499 if (pl->os_multilib)
2500 {
2501 this_multi = multi_os_dir;
2502 this_multi_len = multi_os_dir_len;
2503 }
2504 else
2505 {
2506 this_multi = multi_dir;
2507 this_multi_len = multi_dir_len;
2508 }
2509
2510 if (this_multi_len)
2511 memcpy (path + len, this_multi, this_multi_len + 1);
2512 else
2513 path[len] = '\0';
2514
2515 ret = callback (path, callback_info);
2516 if (ret)
2517 break;
2518 }
2519 }
2520 if (pl)
2521 break;
2522
2523 if (multi_dir == NULL && multi_os_dir == NULL)
2524 break;
2525
2526 /* Run through the paths again, this time without multilibs.
2527 Don't repeat any we have already seen. */
2528 if (multi_dir)
2529 {
2530 free ((char *) multi_dir);
2531 multi_dir = NULL;
2532 free ((char *) multi_suffix);
2533 multi_suffix = machine_suffix;
2534 free ((char *) just_multi_suffix);
2535 just_multi_suffix = just_machine_suffix;
2536 }
2537 else
2538 skip_multi_dir = true;
2539 if (multi_os_dir)
2540 {
2541 free ((char *) multi_os_dir);
2542 multi_os_dir = NULL;
2543 }
2544 else
2545 skip_multi_os_dir = true;
2546 }
2547
2548 if (multi_dir)
2549 {
2550 free ((char *) multi_dir);
2551 free ((char *) multi_suffix);
2552 free ((char *) just_multi_suffix);
2553 }
2554 if (multi_os_dir)
2555 free ((char *) multi_os_dir);
2556 if (ret != path)
2557 free (path);
2558 return ret;
2559}
2560
2561/* Callback for build_search_list. Adds path to obstack being built. */
2562
2563struct add_to_obstack_info {
2564 struct obstack *ob;
2565 bool check_dir;
2566 bool first_time;
2567};
2568
2569static void *
2570add_to_obstack (char *path, void *data)
2571{
2572 struct add_to_obstack_info *info = data;
2573
2574 if (info->check_dir && !is_directory (path, false))
2575 return NULL;
2576
2577 if (!info->first_time)
2578 obstack_1grow (info->ob, PATH_SEPARATOR);
2579
2580 obstack_grow (info->ob, path, strlen (path));
2581
2582 info->first_time = false;
2583 return NULL;
2584}
2585
2586/* Build a list of search directories from PATHS.
2587 PREFIX is a string to prepend to the list.
2588 If CHECK_DIR_P is true we ensure the directory exists.
2589 If DO_MULTI is true, multilib paths are output first, then
2590 non-multilib paths.
2591 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2592 It is also used by the --print-search-dirs flag. */
2593
2594static char *
2595build_search_list (const struct path_prefix *paths, const char *prefix,
2596 bool check_dir, bool do_multi)
2597{
2598 struct add_to_obstack_info info;
2599
2600 info.ob = &collect_obstack;
2601 info.check_dir = check_dir;
2602 info.first_time = true;
2603
2604 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2605 obstack_1grow (&collect_obstack, '=');
2606
2607 for_each_path (paths, do_multi, 0, add_to_obstack, &info);
2608
2609 obstack_1grow (&collect_obstack, '\0');
2610 return XOBFINISH (&collect_obstack, char *);
2611}
2612
2613/* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2614 for collect. */
2615
2616static void
2617putenv_from_prefixes (const struct path_prefix *paths, const char *env_var,
2618 bool do_multi)
2619{
2620 putenv (build_search_list (paths, env_var, true, do_multi));
2621}
2622
2623/* Check whether NAME can be accessed in MODE. This is like access,
2624 except that it never considers directories to be executable. */
2625
2626static int
2627access_check (const char *name, int mode)
2628{
2629 if (mode == X_OK)
2630 {
2631 struct stat st;
2632
2633 if (stat (name, &st) < 0
2634 || S_ISDIR (st.st_mode))
2635 return -1;
2636 }
2637
2638 return access (name, mode);
2639}
2640
2641/* Callback for find_a_file. Appends the file name to the directory
2642 path. If the resulting file exists in the right mode, return the
2643 full pathname to the file. */
2644
2645struct file_at_path_info {
2646 const char *name;
2647 const char *suffix;
2648 int name_len;
2649 int suffix_len;
2650 int mode;
2651};
2652
2653static void *
2654file_at_path (char *path, void *data)
2655{
2656 struct file_at_path_info *info = data;
2657 size_t len = strlen (path);
2658
2659 memcpy (path + len, info->name, info->name_len);
2660 len += info->name_len;
2661
2662 /* Some systems have a suffix for executable files.
2663 So try appending that first. */
2664 if (info->suffix_len)
2665 {
2666 memcpy (path + len, info->suffix, info->suffix_len + 1);
2667 if (access_check (path, info->mode) == 0)
2668 return path;
2669 }
2670
2671 path[len] = '\0';
2672 if (access_check (path, info->mode) == 0)
2673 return path;
2674
2675 return NULL;
2676}
2677
2678/* Search for NAME using the prefix list PREFIXES. MODE is passed to
2679 access to check permissions. If DO_MULTI is true, search multilib
2680 paths then non-multilib paths, otherwise do not search multilib paths.
2681 Return 0 if not found, otherwise return its name, allocated with malloc. */
2682
2683static char *
2684find_a_file (const struct path_prefix *pprefix, const char *name, int mode,
2685 bool do_multi)
2686{
2687 struct file_at_path_info info;
2688
2689#ifdef DEFAULT_ASSEMBLER
2690 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2691 return xstrdup (DEFAULT_ASSEMBLER);
2692#endif
2693
2694#ifdef DEFAULT_LINKER
2695 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2696 return xstrdup (DEFAULT_LINKER);
2697#endif
2698
2699#ifdef FREEBSD_NATIVE
2700 if (! strcmp(name, "include"))
2701 {
2702#ifdef CROSS_INCLUDE_DIR
2703 return xstrdup(CROSS_INCLUDE_DIR);
2704#else
2705 return xstrdup(STANDARD_INCLUDE_DIR);
2706#endif
2707 }
2708#endif
2709
2710 /* Determine the filename to execute (special case for absolute paths). */
2711
2712 if (IS_ABSOLUTE_PATH (name))
2713 {
2714 if (access (name, mode) == 0)
2715 return xstrdup (name);
2716
2717 return NULL;
2718 }
2719
2720 info.name = name;
2721 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "";
2722 info.name_len = strlen (info.name);
2723 info.suffix_len = strlen (info.suffix);
2724 info.mode = mode;
2725
2726 return for_each_path (pprefix, do_multi, info.name_len + info.suffix_len,
2727 file_at_path, &info);
2728}
2729
2730/* Ranking of prefixes in the sort list. -B prefixes are put before
2731 all others. */
2732
2733enum path_prefix_priority
2734{
2735 PREFIX_PRIORITY_B_OPT,
2736 PREFIX_PRIORITY_LAST
2737};
2738
2739/* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2740 order according to PRIORITY. Within each PRIORITY, new entries are
2741 appended.
2742
2743 If WARN is nonzero, we will warn if no file is found
2744 through this prefix. WARN should point to an int
2745 which will be set to 1 if this entry is used.
2746
2747 COMPONENT is the value to be passed to update_path.
2748
2749 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2750 the complete value of machine_suffix.
2751 2 means try both machine_suffix and just_machine_suffix. */
2752
2753static void
2754add_prefix (struct path_prefix *pprefix, const char *prefix,
2755 const char *component, /* enum prefix_priority */ int priority,
2756 int require_machine_suffix, int os_multilib)
2757{
2758 struct prefix_list *pl, **prev;
2759 int len;
2760
2761 for (prev = &pprefix->plist;
2762 (*prev) != NULL && (*prev)->priority <= priority;
2763 prev = &(*prev)->next)
2764 ;
2765
2766 /* Keep track of the longest prefix. */
2767
2768 prefix = update_path (prefix, component);
2769 len = strlen (prefix);
2770 if (len > pprefix->max_len)
2771 pprefix->max_len = len;
2772
2773 pl = XNEW (struct prefix_list);
2774 pl->prefix = prefix;
2775 pl->require_machine_suffix = require_machine_suffix;
2776 pl->priority = priority;
2777 pl->os_multilib = os_multilib;
2778
2779 /* Insert after PREV. */
2780 pl->next = (*prev);
2781 (*prev) = pl;
2782}
2783
2784/* Same as add_prefix, but prepending target_system_root to prefix. */
2785static void
2786add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2787 const char *component,
2788 /* enum prefix_priority */ int priority,
2789 int require_machine_suffix, int os_multilib)
2790{
2791 if (!IS_ABSOLUTE_PATH (prefix))
2792 fatal ("system path '%s' is not absolute", prefix);
2793
2794 if (target_system_root)
2795 {
2796 if (target_sysroot_suffix)
2797 prefix = concat (target_sysroot_suffix, prefix, NULL);
2798 prefix = concat (target_system_root, prefix, NULL);
2799
2800 /* We have to override this because GCC's notion of sysroot
2801 moves along with GCC. */
2802 component = "GCC";
2803 }
2804
2805 add_prefix (pprefix, prefix, component, priority,
2806 require_machine_suffix, os_multilib);
2807}
2808
2809/* Execute the command specified by the arguments on the current line of spec.
2810 When using pipes, this includes several piped-together commands
2811 with `|' between them.
2812
2813 Return 0 if successful, -1 if failed. */
2814
2815static int
2816execute (void)
2817{
2818 int i;
2819 int n_commands; /* # of command. */
2820 char *string;
2821 struct pex_obj *pex;
2822 struct command
2823 {
2824 const char *prog; /* program name. */
2825 const char **argv; /* vector of args. */
2826 };
2827
2828 struct command *commands; /* each command buffer with above info. */
2829
2830 gcc_assert (!processing_spec_function);
2831
2832 /* Count # of piped commands. */
2833 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2834 if (strcmp (argbuf[i], "|") == 0)
2835 n_commands++;
2836
2837 /* Get storage for each command. */
2838 commands = alloca (n_commands * sizeof (struct command));
2839
2840 /* Split argbuf into its separate piped processes,
2841 and record info about each one.
2842 Also search for the programs that are to be run. */
2843
2844 commands[0].prog = argbuf[0]; /* first command. */
2845 commands[0].argv = &argbuf[0];
2846 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false);
2847
2848 if (string)
2849 commands[0].argv[0] = string;
2850
2851 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2852 if (strcmp (argbuf[i], "|") == 0)
2853 { /* each command. */
2854#if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2855 fatal ("-pipe not supported");
2856#endif
2857 argbuf[i] = 0; /* termination of command args. */
2858 commands[n_commands].prog = argbuf[i + 1];
2859 commands[n_commands].argv = &argbuf[i + 1];
2860 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2861 X_OK, false);
2862 if (string)
2863 commands[n_commands].argv[0] = string;
2864 n_commands++;
2865 }
2866
2867 argbuf[argbuf_index] = 0;
2868
2869 /* If -v, print what we are about to do, and maybe query. */
2870
2871 if (verbose_flag)
2872 {
2873 /* For help listings, put a blank line between sub-processes. */
2874 if (print_help_list)
2875 fputc ('\n', stderr);
2876
2877 /* Print each piped command as a separate line. */
2878 for (i = 0; i < n_commands; i++)
2879 {
2880 const char *const *j;
2881
2882 if (verbose_only_flag)
2883 {
2884 for (j = commands[i].argv; *j; j++)
2885 {
2886 const char *p;
2887 fprintf (stderr, " \"");
2888 for (p = *j; *p; ++p)
2889 {
2890 if (*p == '"' || *p == '\\' || *p == '$')
2891 fputc ('\\', stderr);
2892 fputc (*p, stderr);
2893 }
2894 fputc ('"', stderr);
2895 }
2896 }
2897 else
2898 for (j = commands[i].argv; *j; j++)
2899 fprintf (stderr, " %s", *j);
2900
2901 /* Print a pipe symbol after all but the last command. */
2902 if (i + 1 != n_commands)
2903 fprintf (stderr, " |");
2904 fprintf (stderr, "\n");
2905 }
2906 fflush (stderr);
2907 if (verbose_only_flag != 0)
2908 {
2909 /* verbose_only_flag should act as if the spec was
2910 executed, so increment execution_count before
2911 returning. This prevents spurious warnings about
2912 unused linker input files, etc. */
2913 execution_count++;
2914 return 0;
2915 }
2916#ifdef DEBUG
2917 notice ("\nGo ahead? (y or n) ");
2918 fflush (stderr);
2919 i = getchar ();
2920 if (i != '\n')
2921 while (getchar () != '\n')
2922 ;
2923
2924 if (i != 'y' && i != 'Y')
2925 return 0;
2926#endif /* DEBUG */
2927 }
2928
2929#ifdef ENABLE_VALGRIND_CHECKING
2930 /* Run the each command through valgrind. To simplify prepending the
2931 path to valgrind and the option "-q" (for quiet operation unless
2932 something triggers), we allocate a separate argv array. */
2933
2934 for (i = 0; i < n_commands; i++)
2935 {
2936 const char **argv;
2937 int argc;
2938 int j;
2939
2940 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2941 ;
2942
2943 argv = alloca ((argc + 3) * sizeof (char *));
2944
2945 argv[0] = VALGRIND_PATH;
2946 argv[1] = "-q";
2947 for (j = 2; j < argc + 2; j++)
2948 argv[j] = commands[i].argv[j - 2];
2949 argv[j] = NULL;
2950
2951 commands[i].argv = argv;
2952 commands[i].prog = argv[0];
2953 }
2954#endif
2955
2956 /* Run each piped subprocess. */
2957
2958 pex = pex_init (PEX_USE_PIPES | (report_times ? PEX_RECORD_TIMES : 0),
2959 programname, temp_filename);
2960 if (pex == NULL)
2961 pfatal_with_name (_("pex_init failed"));
2962
2963 for (i = 0; i < n_commands; i++)
2964 {
2965 const char *errmsg;
2966 int err;
2967 const char *string = commands[i].argv[0];
2968
2969 errmsg = pex_run (pex,
2970 ((i + 1 == n_commands ? PEX_LAST : 0)
2971 | (string == commands[i].prog ? PEX_SEARCH : 0)),
2972 string, (char * const *) commands[i].argv,
2973 NULL, NULL, &err);
2974 if (errmsg != NULL)
2975 {
2976 if (err == 0)
2977 fatal (errmsg);
2978 else
2979 {
2980 errno = err;
2981 pfatal_with_name (errmsg);
2982 }
2983 }
2984
2985 if (string != commands[i].prog)
2986 free ((void *) string);
2987 }
2988
2989 execution_count++;
2990
2991 /* Wait for all the subprocesses to finish. */
2992
2993 {
2994 int *statuses;
2995 struct pex_time *times = NULL;
2996 int ret_code = 0;
2997
2998 statuses = alloca (n_commands * sizeof (int));
2999 if (!pex_get_status (pex, n_commands, statuses))
3000 pfatal_with_name (_("failed to get exit status"));
3001
3002 if (report_times)
3003 {
3004 times = alloca (n_commands * sizeof (struct pex_time));
3005 if (!pex_get_times (pex, n_commands, times))
3006 pfatal_with_name (_("failed to get process times"));
3007 }
3008
3009 pex_free (pex);
3010
3011 for (i = 0; i < n_commands; ++i)
3012 {
3013 int status = statuses[i];
3014
3015 if (WIFSIGNALED (status))
3016 {
3017#ifdef SIGPIPE
3018 /* SIGPIPE is a special case. It happens in -pipe mode
3019 when the compiler dies before the preprocessor is done,
3020 or the assembler dies before the compiler is done.
3021 There's generally been an error already, and this is
3022 just fallout. So don't generate another error unless
3023 we would otherwise have succeeded. */
3024 if (WTERMSIG (status) == SIGPIPE
3025 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
3026 {
3027 signal_count++;
3028 ret_code = -1;
3029 }
3030 else
3031#endif
3032 fatal_ice ("\
3033Internal error: %s (program %s)\n\
3034Please submit a full bug report.\n\
3035See %s for instructions.",
3036 strsignal (WTERMSIG (status)), commands[i].prog,
3037 bug_report_url);
3038 }
3039 else if (WIFEXITED (status)
3040 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
3041 {
3042 if (WEXITSTATUS (status) > greatest_status)
3043 greatest_status = WEXITSTATUS (status);
3044 ret_code = -1;
3045 }
3046
3047 if (report_times)
3048 {
3049 struct pex_time *pt = &times[i];
3050 double ut, st;
3051
3052 ut = ((double) pt->user_seconds
3053 + (double) pt->user_microseconds / 1.0e6);
3054 st = ((double) pt->system_seconds
3055 + (double) pt->system_microseconds / 1.0e6);
3056
3057 if (ut + st != 0)
3058 notice ("# %s %.2f %.2f\n", commands[i].prog, ut, st);
3059 }
3060 }
3061
3062 return ret_code;
3063 }
3064}
3065
3066/* Find all the switches given to us
3067 and make a vector describing them.
3068 The elements of the vector are strings, one per switch given.
3069 If a switch uses following arguments, then the `part1' field
3070 is the switch itself and the `args' field
3071 is a null-terminated vector containing the following arguments.
3072 The `live_cond' field is:
3073 0 when initialized
3074 1 if the switch is true in a conditional spec,
3075 -1 if false (overridden by a later switch)
3076 -2 if this switch should be ignored (used in %<S)
3077 The `validated' field is nonzero if any spec has looked at this switch;
3078 if it remains zero at the end of the run, it must be meaningless. */
3079
3080#define SWITCH_OK 0
3081#define SWITCH_FALSE -1
3082#define SWITCH_IGNORE -2
3083#define SWITCH_LIVE 1
3084
3085struct switchstr
3086{
3087 const char *part1;
3088 const char **args;
3089 int live_cond;
3090 unsigned char validated;
3091 unsigned char ordering;
3092};
3093
3094static struct switchstr *switches;
3095
3096static int n_switches;
3097
3098/* Language is one of three things:
3099
3100 1) The name of a real programming language.
3101 2) NULL, indicating that no one has figured out
3102 what it is yet.
3103 3) '*', indicating that the file should be passed
3104 to the linker. */
3105struct infile
3106{
3107 const char *name;
3108 const char *language;
3109 struct compiler *incompiler;
3110 bool compiled;
3111 bool preprocessed;
3112};
3113
3114/* Also a vector of input files specified. */
3115
3116static struct infile *infiles;
3117
3118int n_infiles;
3119
3120/* True if multiple input files are being compiled to a single
3121 assembly file. */
3122
3123static bool combine_inputs;
3124
3125/* This counts the number of libraries added by lang_specific_driver, so that
3126 we can tell if there were any user supplied any files or libraries. */
3127
3128static int added_libraries;
3129
3130/* And a vector of corresponding output files is made up later. */
3131
3132const char **outfiles;
3133
3134#if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3135
3136/* Convert NAME to a new name if it is the standard suffix. DO_EXE
3137 is true if we should look for an executable suffix. DO_OBJ
3138 is true if we should look for an object suffix. */
3139
3140static const char *
3141convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
3142 int do_obj ATTRIBUTE_UNUSED)
3143{
3144#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3145 int i;
3146#endif
3147 int len;
3148
3149 if (name == NULL)
3150 return NULL;
3151
3152 len = strlen (name);
3153
3154#ifdef HAVE_TARGET_OBJECT_SUFFIX
3155 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
3156 if (do_obj && len > 2
3157 && name[len - 2] == '.'
3158 && name[len - 1] == 'o')
3159 {
3160 obstack_grow (&obstack, name, len - 2);
3161 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
3162 name = XOBFINISH (&obstack, const char *);
3163 }
3164#endif
3165
3166#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3167 /* If there is no filetype, make it the executable suffix (which includes
3168 the "."). But don't get confused if we have just "-o". */
3169 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
3170 return name;
3171
3172 for (i = len - 1; i >= 0; i--)
3173 if (IS_DIR_SEPARATOR (name[i]))
3174 break;
3175
3176 for (i++; i < len; i++)
3177 if (name[i] == '.')
3178 return name;
3179
3180 obstack_grow (&obstack, name, len);
3181 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
3182 strlen (TARGET_EXECUTABLE_SUFFIX));
3183 name = XOBFINISH (&obstack, const char *);
3184#endif
3185
3186 return name;
3187}
3188#endif
3189
3190/* Display the command line switches accepted by gcc. */
3191static void
3192display_help (void)
3193{
3194 printf (_("Usage: %s [options] file...\n"), programname);
3195 fputs (_("Options:\n"), stdout);
3196
3197 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
3198 fputs (_(" --help Display this information\n"), stdout);
3199 fputs (_(" --target-help Display target specific command line options\n"), stdout);
3200 if (! verbose_flag)
3201 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
3202 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
3203 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
3204 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
3205 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
3206 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
3207 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
3208 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
3209 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
3210 fputs (_("\
3211 -print-multi-lib Display the mapping between command line options and\n\
3212 multiple library search directories\n"), stdout);
3213 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
3214 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3215 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3216 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3217 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
3218 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
3219 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3220 fputs (_(" -combine Pass multiple source files to compiler at once\n"), stdout);
3221 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3222 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3223 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3224 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3225 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3226 fputs (_("\
3227 --sysroot=<directory> Use <directory> as the root directory for headers\n\
3228 and libraries\n"), stdout);
3229 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3230 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
3231 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
3232 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3233 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3234 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3235 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3236 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3237 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3238 fputs (_("\
3239 -x <language> Specify the language of the following input files\n\
3240 Permissible languages include: c c++ assembler none\n\
3241 'none' means revert to the default behavior of\n\
3242 guessing the language based on the file's extension\n\
3243"), stdout);
3244
3245 printf (_("\
3246\nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3247 passed on to the various sub-processes invoked by %s. In order to pass\n\
3248 other options on to these processes the -W<letter> options must be used.\n\
3249"), programname);
3250
3251 /* The rest of the options are displayed by invocations of the various
3252 sub-processes. */
3253}
3254
3255static void
3256add_preprocessor_option (const char *option, int len)
3257{
3258 n_preprocessor_options++;
3259
3260 if (! preprocessor_options)
3261 preprocessor_options = XNEWVEC (char *, n_preprocessor_options);
3262 else
3263 preprocessor_options = xrealloc (preprocessor_options,
3264 n_preprocessor_options * sizeof (char *));
3265
3266 preprocessor_options [n_preprocessor_options - 1] =
3267 save_string (option, len);
3268}
3269
3270static void
3271add_assembler_option (const char *option, int len)
3272{
3273 n_assembler_options++;
3274
3275 if (! assembler_options)
3276 assembler_options = XNEWVEC (char *, n_assembler_options);
3277 else
3278 assembler_options = xrealloc (assembler_options,
3279 n_assembler_options * sizeof (char *));
3280
3281 assembler_options [n_assembler_options - 1] = save_string (option, len);
3282}
3283
3284static void
3285add_linker_option (const char *option, int len)
3286{
3287 n_linker_options++;
3288
3289 if (! linker_options)
3290 linker_options = XNEWVEC (char *, n_linker_options);
3291 else
3292 linker_options = xrealloc (linker_options,
3293 n_linker_options * sizeof (char *));
3294
3295 linker_options [n_linker_options - 1] = save_string (option, len);
3296}
3297
3298/* Create the vector `switches' and its contents.
3299 Store its length in `n_switches'. */
3300
3301static void
3302process_command (int argc, const char **argv)
3303{
3304 int i;
3305 const char *temp;
3306 char *temp1;
3307 const char *spec_lang = 0;
3308 int last_language_n_infiles;
3309 int lang_n_infiles = 0;
3310#ifdef MODIFY_TARGET_NAME
3311 int is_modify_target_name;
3312 unsigned int j;
3313#endif
3314
3315 GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3316
3317 n_switches = 0;
3318 n_infiles = 0;
3319 added_libraries = 0;
3320
3321 /* Figure compiler version from version string. */
3322
3323 compiler_version = temp1 = xstrdup (version_string);
3324
3325 for (; *temp1; ++temp1)
3326 {
3327 if (*temp1 == ' ')
3328 {
3329 *temp1 = '\0';
3330 break;
3331 }
3332 }
3333
3334 /* If there is a -V or -b option (or both), process it now, before
3335 trying to interpret the rest of the command line.
3336 Use heuristic that all configuration names must have at least
3337 one dash '-'. This allows us to pass options starting with -b. */
3338 if (argc > 1 && argv[1][0] == '-'
3339 && (argv[1][1] == 'V' ||
3340 ((argv[1][1] == 'b') && (NULL != strchr(argv[1] + 2,'-')))))
3341 {
3342 const char *new_version = DEFAULT_TARGET_VERSION;
3343 const char *new_machine = DEFAULT_TARGET_MACHINE;
3344 const char *progname = argv[0];
3345 char **new_argv;
3346 char *new_argv0;
3347 int baselen;
3348
3349 while (argc > 1 && argv[1][0] == '-'
3350 && (argv[1][1] == 'V' ||
3351 ((argv[1][1] == 'b') && ( NULL != strchr(argv[1] + 2,'-')))))
3352 {
3353 char opt = argv[1][1];
3354 const char *arg;
3355 if (argv[1][2] != '\0')
3356 {
3357 arg = argv[1] + 2;
3358 argc -= 1;
3359 argv += 1;
3360 }
3361 else if (argc > 2)
3362 {
3363 arg = argv[2];
3364 argc -= 2;
3365 argv += 2;
3366 }
3367 else
3368 fatal ("'-%c' option must have argument", opt);
3369 if (opt == 'V')
3370 new_version = arg;
3371 else
3372 new_machine = arg;
3373 }
3374
3375 for (baselen = strlen (progname); baselen > 0; baselen--)
3376 if (IS_DIR_SEPARATOR (progname[baselen-1]))
3377 break;
3378 new_argv0 = xmemdup (progname, baselen,
3379 baselen + concat_length (new_version, new_machine,
3380 "-gcc-", NULL) + 1);
3381 strcpy (new_argv0 + baselen, new_machine);
3382 strcat (new_argv0, "-gcc-");
3383 strcat (new_argv0, new_version);
3384
3385 new_argv = xmemdup (argv, (argc + 1) * sizeof (argv[0]),
3386 (argc + 1) * sizeof (argv[0]));
3387 new_argv[0] = new_argv0;
3388
3389 execvp (new_argv0, new_argv);
3390 fatal ("couldn't run '%s': %s", new_argv0, xstrerror (errno));
3391 }
3392
3393 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3394 see if we can create it from the pathname specified in argv[0]. */
3395
3396 gcc_libexec_prefix = standard_libexec_prefix;
3397#ifndef FREEBSD_NATIVE
3398#ifndef VMS
3399 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3400 if (!gcc_exec_prefix)
3401 {
3402 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
3403 standard_exec_prefix);
3404 gcc_libexec_prefix = make_relative_prefix (argv[0],
3405 standard_bindir_prefix,
3406 standard_libexec_prefix);
3407 if (gcc_exec_prefix)
3408 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3409 }
3410 else
3411 {
3412 /* make_relative_prefix requires a program name, but
3413 GCC_EXEC_PREFIX is typically a directory name with a trailing
3414 / (which is ignored by make_relative_prefix), so append a
3415 program name. */
3416 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL);
3417 gcc_libexec_prefix = make_relative_prefix (tmp_prefix,
3418 standard_exec_prefix,
3419 standard_libexec_prefix);
3420 free (tmp_prefix);
3421 }
3422#else
3423#endif
3424#endif /* not FREEBSD_NATIVE */
3425
3426 if (gcc_exec_prefix)
3427 {
3428 int len = strlen (gcc_exec_prefix);
3429
3430 if (len > (int) sizeof ("/lib/gcc/") - 1
3431 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3432 {
3433 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3434 if (IS_DIR_SEPARATOR (*temp)
3435 && strncmp (temp + 1, "lib", 3) == 0
3436 && IS_DIR_SEPARATOR (temp[4])
3437 && strncmp (temp + 5, "gcc", 3) == 0)
3438 len -= sizeof ("/lib/gcc/") - 1;
3439 }
3440
3441 set_std_prefix (gcc_exec_prefix, len);
3442 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3443 PREFIX_PRIORITY_LAST, 0, 0);
3444 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3445 PREFIX_PRIORITY_LAST, 0, 0);
3446 }
3447
3448 /* COMPILER_PATH and LIBRARY_PATH have values
3449 that are lists of directory names with colons. */
3450
3451 GET_ENVIRONMENT (temp, "COMPILER_PATH");
3452 if (temp)
3453 {
3454 const char *startp, *endp;
3455 char *nstore = alloca (strlen (temp) + 3);
3456
3457 startp = endp = temp;
3458 while (1)
3459 {
3460 if (*endp == PATH_SEPARATOR || *endp == 0)
3461 {
3462 strncpy (nstore, startp, endp - startp);
3463 if (endp == startp)
3464 strcpy (nstore, concat (".", dir_separator_str, NULL));
3465 else if (!IS_DIR_SEPARATOR (endp[-1]))
3466 {
3467 nstore[endp - startp] = DIR_SEPARATOR;
3468 nstore[endp - startp + 1] = 0;
3469 }
3470 else
3471 nstore[endp - startp] = 0;
3472 add_prefix (&exec_prefixes, nstore, 0,
3473 PREFIX_PRIORITY_LAST, 0, 0);
3474 add_prefix (&include_prefixes, nstore, 0,
3475 PREFIX_PRIORITY_LAST, 0, 0);
3476 if (*endp == 0)
3477 break;
3478 endp = startp = endp + 1;
3479 }
3480 else
3481 endp++;
3482 }
3483 }
3484
3485 GET_ENVIRONMENT (temp, LIBRARY_PATH_ENV);
3486 if (temp && *cross_compile == '0')
3487 {
3488 const char *startp, *endp;
3489 char *nstore = alloca (strlen (temp) + 3);
3490
3491 startp = endp = temp;
3492 while (1)
3493 {
3494 if (*endp == PATH_SEPARATOR || *endp == 0)
3495 {
3496 strncpy (nstore, startp, endp - startp);
3497 if (endp == startp)
3498 strcpy (nstore, concat (".", dir_separator_str, NULL));
3499 else if (!IS_DIR_SEPARATOR (endp[-1]))
3500 {
3501 nstore[endp - startp] = DIR_SEPARATOR;
3502 nstore[endp - startp + 1] = 0;
3503 }
3504 else
3505 nstore[endp - startp] = 0;
3506 add_prefix (&startfile_prefixes, nstore, NULL,
3507 PREFIX_PRIORITY_LAST, 0, 1);
3508 if (*endp == 0)
3509 break;
3510 endp = startp = endp + 1;
3511 }
3512 else
3513 endp++;
3514 }
3515 }
3516
3517 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3518 GET_ENVIRONMENT (temp, "LPATH");
3519 if (temp && *cross_compile == '0')
3520 {
3521 const char *startp, *endp;
3522 char *nstore = alloca (strlen (temp) + 3);
3523
3524 startp = endp = temp;
3525 while (1)
3526 {
3527 if (*endp == PATH_SEPARATOR || *endp == 0)
3528 {
3529 strncpy (nstore, startp, endp - startp);
3530 if (endp == startp)
3531 strcpy (nstore, concat (".", dir_separator_str, NULL));
3532 else if (!IS_DIR_SEPARATOR (endp[-1]))
3533 {
3534 nstore[endp - startp] = DIR_SEPARATOR;
3535 nstore[endp - startp + 1] = 0;
3536 }
3537 else
3538 nstore[endp - startp] = 0;
3539 add_prefix (&startfile_prefixes, nstore, NULL,
3540 PREFIX_PRIORITY_LAST, 0, 1);
3541 if (*endp == 0)
3542 break;
3543 endp = startp = endp + 1;
3544 }
3545 else
3546 endp++;
3547 }
3548 }
3549
3550 /* Options specified as if they appeared on the command line. */
3551 temp = getenv ("GCC_OPTIONS");
3552 if ((temp) && (strlen (temp) > 0))
3553 {
3554 int len;
3555 int optc = 1;
3556 int new_argc;
3557 const char **new_argv;
3558 char *envopts;
3559
3560 while (isspace (*temp))
3561 temp++;
3562 len = strlen (temp);
3563 envopts = (char *) xmalloc (len + 1);
3564 strcpy (envopts, temp);
3565
3566 for (i = 0; i < (len - 1); i++)
3567 if ((isspace (envopts[i])) && ! (isspace (envopts[i+1])))
3568 optc++;
3569
3570 new_argv = (const char **) alloca ((optc + argc) * sizeof(char *));
3571
3572 for (i = 0, new_argc = 1; new_argc <= optc; new_argc++)
3573 {
3574 while (isspace (envopts[i]))
3575 i++;
3576 new_argv[new_argc] = envopts + i;
3577 while (!isspace (envopts[i]) && (envopts[i] != '\0'))
3578 i++;
3579 envopts[i++] = '\0';
3580 }
3581 for (i = 1; i < argc; i++)
3582 new_argv[new_argc++] = argv[i];
3583
3584 argv = new_argv;
3585 argc = new_argc;
3586 }
3587
3588 /* Convert new-style -- options to old-style. */
3589 translate_options (&argc, (const char *const **) &argv);
3590
3591 /* Do language-specific adjustment/addition of flags. */
3592 lang_specific_driver (&argc, (const char *const **) &argv, &added_libraries);
3593
3594 /* Scan argv twice. Here, the first time, just count how many switches
3595 there will be in their vector, and how many input files in theirs.
3596 Here we also parse the switches that cc itself uses (e.g. -v). */
3597
3598 for (i = 1; i < argc; i++)
3599 {
3600 if (! strcmp (argv[i], "-dumpspecs"))
3601 {
3602 struct spec_list *sl;
3603 init_spec ();
3604 for (sl = specs; sl; sl = sl->next)
3605 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3606 if (link_command_spec)
3607 printf ("*link_command:\n%s\n\n", link_command_spec);
3608 exit (0);
3609 }
3610 else if (! strcmp (argv[i], "-dumpversion"))
3611 {
3612 printf ("%s\n", spec_version);
3613 exit (0);
3614 }
3615 else if (! strcmp (argv[i], "-dumpmachine"))
3616 {
3617 printf ("%s\n", spec_machine);
3618 exit (0);
3619 }
3620 else if (strcmp (argv[i], "-fversion") == 0)
3621 {
3622 /* translate_options () has turned --version into -fversion. */
3623 printf (_("%s (GCC) %s\n"), programname, version_string);
3624 printf ("Copyright %s 2007 Free Software Foundation, Inc.\n",
3625 _("(C)"));
3626 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
3627warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
3628 stdout);
3629 exit (0);
3630 }
3631 else if (strcmp (argv[i], "-fhelp") == 0)
3632 {
3633 /* translate_options () has turned --help into -fhelp. */
3634 print_help_list = 1;
3635
3636 /* We will be passing a dummy file on to the sub-processes. */
3637 n_infiles++;
3638 n_switches++;
3639
3640 /* CPP driver cannot obtain switch from cc1_options. */
3641 if (is_cpp_driver)
3642 add_preprocessor_option ("--help", 6);
3643 add_assembler_option ("--help", 6);
3644 add_linker_option ("--help", 6);
3645 }
3646 else if (strcmp (argv[i], "-ftarget-help") == 0)
3647 {
3648 /* translate_options() has turned --target-help into -ftarget-help. */
3649 target_help_flag = 1;
3650
3651 /* We will be passing a dummy file on to the sub-processes. */
3652 n_infiles++;
3653 n_switches++;
3654
3655 /* CPP driver cannot obtain switch from cc1_options. */
3656 if (is_cpp_driver)
3657 add_preprocessor_option ("--target-help", 13);
3658 add_assembler_option ("--target-help", 13);
3659 add_linker_option ("--target-help", 13);
3660 }
3661 else if (! strcmp (argv[i], "-pass-exit-codes"))
3662 {
3663 pass_exit_codes = 1;
3664 n_switches++;
3665 }
3666 else if (! strcmp (argv[i], "-print-search-dirs"))
3667 print_search_dirs = 1;
3668 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3669 print_file_name = "libgcc.a";
3670 else if (! strncmp (argv[i], "-print-file-name=", 17))
3671 print_file_name = argv[i] + 17;
3672 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3673 print_prog_name = argv[i] + 17;
3674 else if (! strcmp (argv[i], "-print-multi-lib"))
3675 print_multi_lib = 1;
3676 else if (! strcmp (argv[i], "-print-multi-directory"))
3677 print_multi_directory = 1;
3678 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3679 print_multi_os_directory = 1;
3680 else if (! strncmp (argv[i], "-Wa,", 4))
3681 {
3682 int prev, j;
3683 /* Pass the rest of this option to the assembler. */
3684
3685 /* Split the argument at commas. */
3686 prev = 4;
3687 for (j = 4; argv[i][j]; j++)
3688 if (argv[i][j] == ',')
3689 {
3690 add_assembler_option (argv[i] + prev, j - prev);
3691 prev = j + 1;
3692 }
3693
3694 /* Record the part after the last comma. */
3695 add_assembler_option (argv[i] + prev, j - prev);
3696 }
3697 else if (! strncmp (argv[i], "-Wp,", 4))
3698 {
3699 int prev, j;
3700 /* Pass the rest of this option to the preprocessor. */
3701
3702 /* Split the argument at commas. */
3703 prev = 4;
3704 for (j = 4; argv[i][j]; j++)
3705 if (argv[i][j] == ',')
3706 {
3707 add_preprocessor_option (argv[i] + prev, j - prev);
3708 prev = j + 1;
3709 }
3710
3711 /* Record the part after the last comma. */
3712 add_preprocessor_option (argv[i] + prev, j - prev);
3713 }
3714 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3715 /* The +e options to the C++ front-end. */
3716 n_switches++;
3717 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3718 {
3719 int j;
3720 /* Split the argument at commas. */
3721 for (j = 3; argv[i][j]; j++)
3722 n_infiles += (argv[i][j] == ',');
3723 }
3724 else if (strcmp (argv[i], "-Xlinker") == 0)
3725 {
3726 if (i + 1 == argc)
3727 fatal ("argument to '-Xlinker' is missing");
3728
3729 n_infiles++;
3730 i++;
3731 }
3732 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3733 {
3734 if (i + 1 == argc)
3735 fatal ("argument to '-Xpreprocessor' is missing");
3736
3737 add_preprocessor_option (argv[i+1], strlen (argv[i+1]));
3738 }
3739 else if (strcmp (argv[i], "-Xassembler") == 0)
3740 {
3741 if (i + 1 == argc)
3742 fatal ("argument to '-Xassembler' is missing");
3743
3744 add_assembler_option (argv[i+1], strlen (argv[i+1]));
3745 }
3746 else if (strcmp (argv[i], "-l") == 0)
3747 {
3748 if (i + 1 == argc)
3749 fatal ("argument to '-l' is missing");
3750
3751 n_infiles++;
3752 i++;
3753 }
3754 else if (strncmp (argv[i], "-l", 2) == 0)
3755 n_infiles++;
3756 else if (strcmp (argv[i], "-save-temps") == 0)
3757 {
3758 save_temps_flag = 1;
3759 n_switches++;
3760 }
3761 else if (strcmp (argv[i], "-combine") == 0)
3762 {
3763 combine_flag = 1;
3764 n_switches++;
3765 }
3766 else if (strcmp (argv[i], "-specs") == 0)
3767 {
3768 struct user_specs *user = XNEW (struct user_specs);
3769 if (++i >= argc)
3770 fatal ("argument to '-specs' is missing");
3771
3772 user->next = (struct user_specs *) 0;
3773 user->filename = argv[i];
3774 if (user_specs_tail)
3775 user_specs_tail->next = user;
3776 else
3777 user_specs_head = user;
3778 user_specs_tail = user;
3779 }
3780 else if (strncmp (argv[i], "-specs=", 7) == 0)
3781 {
3782 struct user_specs *user = XNEW (struct user_specs);
3783 if (strlen (argv[i]) == 7)
3784 fatal ("argument to '-specs=' is missing");
3785
3786 user->next = (struct user_specs *) 0;
3787 user->filename = argv[i] + 7;
3788 if (user_specs_tail)
3789 user_specs_tail->next = user;
3790 else
3791 user_specs_head = user;
3792 user_specs_tail = user;
3793 }
3794 else if (strcmp (argv[i], "-time") == 0)
3795 report_times = 1;
3796 else if (strcmp (argv[i], "-pipe") == 0)
3797 {
3798 /* -pipe has to go into the switches array as well as
3799 setting a flag. */
3800 use_pipes = 1;
3801 n_switches++;
3802 }
3803 else if (strcmp (argv[i], "-###") == 0)
3804 {
3805 /* This is similar to -v except that there is no execution
3806 of the commands and the echoed arguments are quoted. It
3807 is intended for use in shell scripts to capture the
3808 driver-generated command line. */
3809 verbose_only_flag++;
3810 verbose_flag++;
3811 }
3812 else if (argv[i][0] == '-' && argv[i][1] != 0)
3813 {
3814 const char *p = &argv[i][1];
3815 int c = *p;
3816
3817 switch (c)
3818 {
3819 case 'b':
3820 if (NULL == strchr(argv[i] + 2, '-'))
3821 goto normal_switch;
3822
3823 /* Fall through. */
3824 case 'V':
3825 fatal ("'-%c' must come at the start of the command line", c);
3826 break;
3827
3828 case 'B':
3829 {
3830 const char *value;
3831 int len;
3832
3833 if (p[1] == 0 && i + 1 == argc)
3834 fatal ("argument to '-B' is missing");
3835 if (p[1] == 0)
3836 value = argv[++i];
3837 else
3838 value = p + 1;
3839
3840 len = strlen (value);
3841
3842 /* Catch the case where the user has forgotten to append a
3843 directory separator to the path. Note, they may be using
3844 -B to add an executable name prefix, eg "i386-elf-", in
3845 order to distinguish between multiple installations of
3846 GCC in the same directory. Hence we must check to see
3847 if appending a directory separator actually makes a
3848 valid directory name. */
3849 if (! IS_DIR_SEPARATOR (value [len - 1])
3850 && is_directory (value, false))
3851 {
3852 char *tmp = XNEWVEC (char, len + 2);
3853 strcpy (tmp, value);
3854 tmp[len] = DIR_SEPARATOR;
3855 tmp[++ len] = 0;
3856 value = tmp;
3857 }
3858
3859 /* As a kludge, if the arg is "[foo/]stageN/", just
3860 add "[foo/]include" to the include prefix. */
3861 if ((len == 7
3862 || (len > 7
3863 && (IS_DIR_SEPARATOR (value[len - 8]))))
3864 && strncmp (value + len - 7, "stage", 5) == 0
3865 && ISDIGIT (value[len - 2])
3866 && (IS_DIR_SEPARATOR (value[len - 1])))
3867 {
3868 if (len == 7)
3869 add_prefix (&include_prefixes, "./", NULL,
3870 PREFIX_PRIORITY_B_OPT, 0, 0);
3871 else
3872 {
3873 char *string = xmalloc (len - 6);
3874 memcpy (string, value, len - 7);
3875 string[len - 7] = 0;
3876 add_prefix (&include_prefixes, string, NULL,
3877 PREFIX_PRIORITY_B_OPT, 0, 0);
3878 }
3879 }
3880
3881 add_prefix (&exec_prefixes, value, NULL,
3882 PREFIX_PRIORITY_B_OPT, 0, 0);
3883 add_prefix (&startfile_prefixes, value, NULL,
3884 PREFIX_PRIORITY_B_OPT, 0, 0);
3885 add_prefix (&include_prefixes, value, NULL,
3886 PREFIX_PRIORITY_B_OPT, 0, 0);
3887 n_switches++;
3888 }
3889 break;
3890
3891 case 'v': /* Print our subcommands and print versions. */
3892 n_switches++;
3893 /* If they do anything other than exactly `-v', don't set
3894 verbose_flag; rather, continue on to give the error. */
3895 if (p[1] != 0)
3896 break;
3897 verbose_flag++;
3898 break;
3899
3900 case 'S':
3901 case 'c':
3902 if (p[1] == 0)
3903 {
3904 have_c = 1;
3905 n_switches++;
3906 break;
3907 }
3908 goto normal_switch;
3909
3910 case 'o':
3911 have_o = 1;
3912#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3913 if (! have_c)
3914 {
3915 int skip;
3916
3917 /* Forward scan, just in case -S or -c is specified
3918 after -o. */
3919 int j = i + 1;
3920 if (p[1] == 0)
3921 ++j;
3922 while (j < argc)
3923 {
3924 if (argv[j][0] == '-')
3925 {
3926 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
3927 && argv[j][2] == 0)
3928 {
3929 have_c = 1;
3930 break;
3931 }
3932 else if ((skip = SWITCH_TAKES_ARG (argv[j][1])))
3933 j += skip - (argv[j][2] != 0);
3934 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1)))
3935 j += skip;
3936 }
3937 j++;
3938 }
3939 }
3940#endif
3941#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3942 if (p[1] == 0)
3943 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0);
3944 else
3945 argv[i] = convert_filename (argv[i], ! have_c, 0);
3946#endif
3947 goto normal_switch;
3948
3949 default:
3950 normal_switch:
3951
3952#ifdef MODIFY_TARGET_NAME
3953 is_modify_target_name = 0;
3954
3955 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3956 if (! strcmp (argv[i], modify_target[j].sw))
3957 {
3958 char *new_name = xmalloc (strlen (modify_target[j].str)
3959 + strlen (spec_machine));
3960 const char *p, *r;
3961 char *q;
3962 int made_addition = 0;
3963
3964 is_modify_target_name = 1;
3965 for (p = spec_machine, q = new_name; *p != 0; )
3966 {
3967 if (modify_target[j].add_del == DELETE
3968 && (! strncmp (q, modify_target[j].str,
3969 strlen (modify_target[j].str))))
3970 p += strlen (modify_target[j].str);
3971 else if (modify_target[j].add_del == ADD
3972 && ! made_addition && *p == '-')
3973 {
3974 for (r = modify_target[j].str; *r != 0; )
3975 *q++ = *r++;
3976 made_addition = 1;
3977 }
3978
3979 *q++ = *p++;
3980 }
3981
3982 spec_machine = new_name;
3983 }
3984
3985 if (is_modify_target_name)
3986 break;
3987#endif
3988
3989 n_switches++;
3990
3991 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
3992 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
3993 else if (WORD_SWITCH_TAKES_ARG (p))
3994 i += WORD_SWITCH_TAKES_ARG (p);
3995 }
3996 }
3997 else
3998 {
3999 n_infiles++;
4000 lang_n_infiles++;
4001 }
4002 }
4003
4004 if (save_temps_flag && use_pipes)
4005 {
4006 /* -save-temps overrides -pipe, so that temp files are produced */
4007 if (save_temps_flag)
4008 error ("warning: -pipe ignored because -save-temps specified");
4009 use_pipes = 0;
4010 }
4011
4012 /* Set up the search paths before we go looking for config files. */
4013#ifdef FREEBSD_NATIVE
4014 add_prefix (&exec_prefixes, PREFIX"/bin/", "BINUTILS",
4015 PREFIX_PRIORITY_LAST, 0, 0);
4016#endif /* FREEBSD_NATIVE */
4017
4018 /* These come before the md prefixes so that we will find gcc's subcommands
4019 (such as cpp) rather than those of the host system. */
4020 /* Use 2 as fourth arg meaning try just the machine as a suffix,
4021 as well as trying the machine and the version. */
4022#ifndef OS2
4023 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
4024 PREFIX_PRIORITY_LAST, 1, 0);
4025 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
4026 PREFIX_PRIORITY_LAST, 2, 0);
4027#ifndef FREEBSD_NATIVE
4028 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
4029 PREFIX_PRIORITY_LAST, 2, 0);
4030 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS",
4031 PREFIX_PRIORITY_LAST, 2, 0);
4032 add_prefix (&exec_prefixes, standard_exec_prefix_2, "BINUTILS",
4033 PREFIX_PRIORITY_LAST, 2, 0);
4034#endif
4035#endif
4036
4037#ifndef FREEBSD_NATIVE
4038 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
4039 PREFIX_PRIORITY_LAST, 1, 0);
4040 add_prefix (&startfile_prefixes, standard_exec_prefix_2, "BINUTILS",
4041 PREFIX_PRIORITY_LAST, 1, 0);
4042
4043 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
4044 dir_separator_str, NULL);
4045
4046 /* If tooldir is relative, base it on exec_prefixes. A relative
4047 tooldir lets us move the installed tree as a unit.
4048
4049 If GCC_EXEC_PREFIX is defined, then we want to add two relative
4050 directories, so that we can search both the user specified directory
4051 and the standard place. */
4052
4053 if (!IS_ABSOLUTE_PATH (tooldir_prefix))
4054 {
4055 if (gcc_exec_prefix)
4056 {
4057 char *gcc_exec_tooldir_prefix
4058 = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
4059 spec_version, dir_separator_str, tooldir_prefix, NULL);
4060
4061 add_prefix (&exec_prefixes,
4062 concat (gcc_exec_tooldir_prefix, "bin",
4063 dir_separator_str, NULL),
4064 NULL, PREFIX_PRIORITY_LAST, 0, 0);
4065 add_prefix (&startfile_prefixes,
4066 concat (gcc_exec_tooldir_prefix, "lib",
4067 dir_separator_str, NULL),
4068 NULL, PREFIX_PRIORITY_LAST, 0, 1);
4069 }
4070
4071 tooldir_prefix = concat (standard_exec_prefix, spec_machine,
4072 dir_separator_str, spec_version,
4073 dir_separator_str, tooldir_prefix, NULL);
4074 }
4075
4076 add_prefix (&exec_prefixes,
4077 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
4078 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0);
4079 add_prefix (&startfile_prefixes,
4080 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
4081 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1);
4082
4083#if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
4084 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
4085 then consider it to relocate with the rest of the GCC installation
4086 if GCC_EXEC_PREFIX is set.
4087 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
4088 if (target_system_root && gcc_exec_prefix)
4089 {
4090 char *tmp_prefix = make_relative_prefix (argv[0],
4091 standard_bindir_prefix,
4092 target_system_root);
4093 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
4094 {
4095 target_system_root = tmp_prefix;
4096 target_system_root_changed = 1;
4097 }
4098 }
4099#endif
4100#endif /* FREEBSD_NATIVE */
4101
4102 /* More prefixes are enabled in main, after we read the specs file
4103 and determine whether this is cross-compilation or not. */
4104
4105 /* Then create the space for the vectors and scan again. */
4106
4107 switches = XNEWVEC (struct switchstr, n_switches + 1);
4108 infiles = XNEWVEC (struct infile, n_infiles + 1);
4109 n_switches = 0;
4110 n_infiles = 0;
4111 last_language_n_infiles = -1;
4112
4113 /* This, time, copy the text of each switch and store a pointer
4114 to the copy in the vector of switches.
4115 Store all the infiles in their vector. */
4116
4117 for (i = 1; i < argc; i++)
4118 {
4119 /* Just skip the switches that were handled by the preceding loop. */
4120#ifdef MODIFY_TARGET_NAME
4121 is_modify_target_name = 0;
4122
4123 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
4124 if (! strcmp (argv[i], modify_target[j].sw))
4125 is_modify_target_name = 1;
4126
4127 if (is_modify_target_name)
4128 ;
4129 else
4130#endif
4131 if (! strncmp (argv[i], "-Wa,", 4))
4132 ;
4133 else if (! strncmp (argv[i], "-Wp,", 4))
4134 ;
4135 else if (! strcmp (argv[i], "-pass-exit-codes"))
4136 ;
4137 else if (! strcmp (argv[i], "-print-search-dirs"))
4138 ;
4139 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
4140 ;
4141 else if (! strncmp (argv[i], "-print-file-name=", 17))
4142 ;
4143 else if (! strncmp (argv[i], "-print-prog-name=", 17))
4144 ;
4145 else if (! strcmp (argv[i], "-print-multi-lib"))
4146 ;
4147 else if (! strcmp (argv[i], "-print-multi-directory"))
4148 ;
4149 else if (! strcmp (argv[i], "-print-multi-os-directory"))
4150 ;
4151 else if (! strcmp (argv[i], "-ftarget-help"))
4152 ;
4153 else if (! strcmp (argv[i], "-fhelp"))
4154 ;
4155 else if (! strncmp (argv[i], "--sysroot=", strlen ("--sysroot=")))
4156 {
4157 target_system_root = argv[i] + strlen ("--sysroot=");
4158 target_system_root_changed = 1;
4159 }
4160 else if (argv[i][0] == '+' && argv[i][1] == 'e')
4161 {
4162 /* Compensate for the +e options to the C++ front-end;
4163 they're there simply for cfront call-compatibility. We do
4164 some magic in default_compilers to pass them down properly.
4165 Note we deliberately start at the `+' here, to avoid passing
4166 -e0 or -e1 down into the linker. */
4167 switches[n_switches].part1 = &argv[i][0];
4168 switches[n_switches].args = 0;
4169 switches[n_switches].live_cond = SWITCH_OK;
4170 switches[n_switches].validated = 0;
4171 n_switches++;
4172 }
4173 else if (strncmp (argv[i], "-Wl,", 4) == 0)
4174 {
4175 int prev, j;
4176 /* Split the argument at commas. */
4177 prev = 4;
4178 for (j = 4; argv[i][j]; j++)
4179 if (argv[i][j] == ',')
4180 {
4181 infiles[n_infiles].language = "*";
4182 infiles[n_infiles++].name
4183 = save_string (argv[i] + prev, j - prev);
4184 prev = j + 1;
4185 }
4186 /* Record the part after the last comma. */
4187 infiles[n_infiles].language = "*";
4188 infiles[n_infiles++].name = argv[i] + prev;
4189 }
4190 else if (strcmp (argv[i], "-Xlinker") == 0)
4191 {
4192 infiles[n_infiles].language = "*";
4193 infiles[n_infiles++].name = argv[++i];
4194 }
4195 /* Xassembler and Xpreprocessor were already handled in the first argv
4196 scan, so all we need to do here is ignore them and their argument. */
4197 else if (strcmp (argv[i], "-Xassembler") == 0)
4198 i++;
4199 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
4200 i++;
4201 else if (strcmp (argv[i], "-l") == 0)
4202 { /* POSIX allows separation of -l and the lib arg;
4203 canonicalize by concatenating -l with its arg */
4204 infiles[n_infiles].language = "*";
4205 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL);
4206 }
4207 else if (strncmp (argv[i], "-l", 2) == 0)
4208 {
4209 infiles[n_infiles].language = "*";
4210 infiles[n_infiles++].name = argv[i];
4211 }
4212 else if (strcmp (argv[i], "-specs") == 0)
4213 i++;
4214 else if (strncmp (argv[i], "-specs=", 7) == 0)
4215 ;
4216 else if (strcmp (argv[i], "-time") == 0)
4217 ;
4218 else if (strcmp (argv[i], "-###") == 0)
4219 ;
4220 else if (argv[i][0] == '-' && argv[i][1] != 0)
4221 {
4222 const char *p = &argv[i][1];
4223 int c = *p;
4224
4225 if (c == 'x')
4226 {
4227 if (p[1] == 0 && i + 1 == argc)
4228 fatal ("argument to '-x' is missing");
4229 if (p[1] == 0)
4230 spec_lang = argv[++i];
4231 else
4232 spec_lang = p + 1;
4233 if (! strcmp (spec_lang, "none"))
4234 /* Suppress the warning if -xnone comes after the last input
4235 file, because alternate command interfaces like g++ might
4236 find it useful to place -xnone after each input file. */
4237 spec_lang = 0;
4238 else
4239 last_language_n_infiles = n_infiles;
4240 continue;
4241 }
4242 switches[n_switches].part1 = p;
4243 /* Deal with option arguments in separate argv elements. */
4244 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
4245 || WORD_SWITCH_TAKES_ARG (p))
4246 {
4247 int j = 0;
4248 int n_args = WORD_SWITCH_TAKES_ARG (p);
4249
4250 if (n_args == 0)
4251 {
4252 /* Count only the option arguments in separate argv elements. */
4253 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
4254 }
4255 if (i + n_args >= argc)
4256 fatal ("argument to '-%s' is missing", p);
4257 switches[n_switches].args
4258 = XNEWVEC (const char *, n_args + 1);
4259 while (j < n_args)
4260 switches[n_switches].args[j++] = argv[++i];
4261 /* Null-terminate the vector. */
4262 switches[n_switches].args[j] = 0;
4263 }
4264 else if (strchr (switches_need_spaces, c))
4265 {
4266 /* On some systems, ld cannot handle some options without
4267 a space. So split the option from its argument. */
4268 char *part1 = XNEWVEC (char, 2);
4269 part1[0] = c;
4270 part1[1] = '\0';
4271
4272 switches[n_switches].part1 = part1;
4273 switches[n_switches].args = XNEWVEC (const char *, 2);
4274 switches[n_switches].args[0] = xstrdup (p+1);
4275 switches[n_switches].args[1] = 0;
4276 }
4277 else
4278 switches[n_switches].args = 0;
4279
4280 switches[n_switches].live_cond = SWITCH_OK;
4281 switches[n_switches].validated = 0;
4282 switches[n_switches].ordering = 0;
4283 /* These are always valid, since gcc.c itself understands them. */
4284 if (!strcmp (p, "save-temps")
4285 || !strcmp (p, "static-libgcc")
4286 || !strcmp (p, "shared-libgcc")
4287 || !strcmp (p, "pipe"))
4288 switches[n_switches].validated = 1;
4289 else
4290 {
4291 char ch = switches[n_switches].part1[0];
4292 if (ch == 'B')
4293 switches[n_switches].validated = 1;
4294 }
4295 n_switches++;
4296 }
4297 else
4298 {
4299#ifdef HAVE_TARGET_OBJECT_SUFFIX
4300 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
4301#endif
4302
4303 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
4304 {
4305 perror_with_name (argv[i]);
4306 error_count++;
4307 }
4308 else
4309 {
4310 infiles[n_infiles].language = spec_lang;
4311 infiles[n_infiles++].name = argv[i];
4312 }
4313 }
4314 }
4315
4316 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4317 error ("warning: '-x %s' after last input file has no effect", spec_lang);
4318
4319 /* Ensure we only invoke each subprocess once. */
4320 if (target_help_flag || print_help_list)
4321 {
4322 n_infiles = 1;
4323
4324 /* Create a dummy input file, so that we can pass --target-help on to
4325 the various sub-processes. */
4326 infiles[0].language = "c";
4327 infiles[0].name = "help-dummy";
4328
4329 if (target_help_flag)
4330 {
4331 switches[n_switches].part1 = "--target-help";
4332 switches[n_switches].args = 0;
4333 switches[n_switches].live_cond = SWITCH_OK;
4334 switches[n_switches].validated = 0;
4335
4336 n_switches++;
4337 }
4338
4339 if (print_help_list)
4340 {
4341 switches[n_switches].part1 = "--help";
4342 switches[n_switches].args = 0;
4343 switches[n_switches].live_cond = SWITCH_OK;
4344 switches[n_switches].validated = 0;
4345
4346 n_switches++;
4347 }
4348 }
4349
4350 switches[n_switches].part1 = 0;
4351 infiles[n_infiles].name = 0;
4352}
4353
4354/* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4355 and place that in the environment. */
4356
4357static void
4358set_collect_gcc_options (void)
4359{
4360 int i;
4361 int first_time;
4362
4363 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4364 the compiler. */
4365 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4366 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4367
4368 first_time = TRUE;
4369 for (i = 0; (int) i < n_switches; i++)
4370 {
4371 const char *const *args;
4372 const char *p, *q;
4373 if (!first_time)
4374 obstack_grow (&collect_obstack, " ", 1);
4375
4376 first_time = FALSE;
4377
4378 /* Ignore elided switches. */
4379 if (switches[i].live_cond == SWITCH_IGNORE)
4380 continue;
4381
4382 obstack_grow (&collect_obstack, "'-", 2);
4383 q = switches[i].part1;
4384 while ((p = strchr (q, '\'')))
4385 {
4386 obstack_grow (&collect_obstack, q, p - q);
4387 obstack_grow (&collect_obstack, "'\\''", 4);
4388 q = ++p;
4389 }
4390 obstack_grow (&collect_obstack, q, strlen (q));
4391 obstack_grow (&collect_obstack, "'", 1);
4392
4393 for (args = switches[i].args; args && *args; args++)
4394 {
4395 obstack_grow (&collect_obstack, " '", 2);
4396 q = *args;
4397 while ((p = strchr (q, '\'')))
4398 {
4399 obstack_grow (&collect_obstack, q, p - q);
4400 obstack_grow (&collect_obstack, "'\\''", 4);
4401 q = ++p;
4402 }
4403 obstack_grow (&collect_obstack, q, strlen (q));
4404 obstack_grow (&collect_obstack, "'", 1);
4405 }
4406 }
4407 obstack_grow (&collect_obstack, "\0", 1);
4408 putenv (XOBFINISH (&collect_obstack, char *));
4409}
4410
4411/* Process a spec string, accumulating and running commands. */
4412
4413/* These variables describe the input file name.
4414 input_file_number is the index on outfiles of this file,
4415 so that the output file name can be stored for later use by %o.
4416 input_basename is the start of the part of the input file
4417 sans all directory names, and basename_length is the number
4418 of characters starting there excluding the suffix .c or whatever. */
4419
4420static const char *input_filename;
4421static int input_file_number;
4422size_t input_filename_length;
4423static int basename_length;
4424static int suffixed_basename_length;
4425static const char *input_basename;
4426static const char *input_suffix;
4427#ifndef HOST_LACKS_INODE_NUMBERS
4428static struct stat input_stat;
4429#endif
4430static int input_stat_set;
4431
4432/* The compiler used to process the current input file. */
4433static struct compiler *input_file_compiler;
4434
4435/* These are variables used within do_spec and do_spec_1. */
4436
4437/* Nonzero if an arg has been started and not yet terminated
4438 (with space, tab or newline). */
4439static int arg_going;
4440
4441/* Nonzero means %d or %g has been seen; the next arg to be terminated
4442 is a temporary file name. */
4443static int delete_this_arg;
4444
4445/* Nonzero means %w has been seen; the next arg to be terminated
4446 is the output file name of this compilation. */
4447static int this_is_output_file;
4448
4449/* Nonzero means %s has been seen; the next arg to be terminated
4450 is the name of a library file and we should try the standard
4451 search dirs for it. */
4452static int this_is_library_file;
4453
4454/* Nonzero means that the input of this command is coming from a pipe. */
4455static int input_from_pipe;
4456
4457/* Nonnull means substitute this for any suffix when outputting a switches
4458 arguments. */
4459static const char *suffix_subst;
4460
4461/* Process the spec SPEC and run the commands specified therein.
4462 Returns 0 if the spec is successfully processed; -1 if failed. */
4463
4464int
4465do_spec (const char *spec)
4466{
4467 int value;
4468
4469 value = do_spec_2 (spec);
4470
4471 /* Force out any unfinished command.
4472 If -pipe, this forces out the last command if it ended in `|'. */
4473 if (value == 0)
4474 {
4475 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4476 argbuf_index--;
4477
4478 set_collect_gcc_options ();
4479
4480 if (argbuf_index > 0)
4481 value = execute ();
4482 }
4483
4484 return value;
4485}
4486
4487static int
4488do_spec_2 (const char *spec)
4489{
4490 const char *string;
4491 int result;
4492
4493 clear_args ();
4494 arg_going = 0;
4495 delete_this_arg = 0;
4496 this_is_output_file = 0;
4497 this_is_library_file = 0;
4498 input_from_pipe = 0;
4499 suffix_subst = NULL;
4500
4501 result = do_spec_1 (spec, 0, NULL);
4502
4503 /* End any pending argument. */
4504 if (arg_going)
4505 {
4506 obstack_1grow (&obstack, 0);
4507 string = XOBFINISH (&obstack, const char *);
4508 if (this_is_library_file)
4509 string = find_file (string);
4510 store_arg (string, delete_this_arg, this_is_output_file);
4511 if (this_is_output_file)
4512 outfiles[input_file_number] = string;
4513 arg_going = 0;
4514 }
4515
4516 return result;
4517}
4518
4519
4520/* Process the given spec string and add any new options to the end
4521 of the switches/n_switches array. */
4522
4523static void
4524do_option_spec (const char *name, const char *spec)
4525{
4526 unsigned int i, value_count, value_len;
4527 const char *p, *q, *value;
4528 char *tmp_spec, *tmp_spec_p;
4529
4530 if (configure_default_options[0].name == NULL)
4531 return;
4532
4533 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4534 if (strcmp (configure_default_options[i].name, name) == 0)
4535 break;
4536 if (i == ARRAY_SIZE (configure_default_options))
4537 return;
4538
4539 value = configure_default_options[i].value;
4540 value_len = strlen (value);
4541
4542 /* Compute the size of the final spec. */
4543 value_count = 0;
4544 p = spec;
4545 while ((p = strstr (p, "%(VALUE)")) != NULL)
4546 {
4547 p ++;
4548 value_count ++;
4549 }
4550
4551 /* Replace each %(VALUE) by the specified value. */
4552 tmp_spec = alloca (strlen (spec) + 1
4553 + value_count * (value_len - strlen ("%(VALUE)")));
4554 tmp_spec_p = tmp_spec;
4555 q = spec;
4556 while ((p = strstr (q, "%(VALUE)")) != NULL)
4557 {
4558 memcpy (tmp_spec_p, q, p - q);
4559 tmp_spec_p = tmp_spec_p + (p - q);
4560 memcpy (tmp_spec_p, value, value_len);
4561 tmp_spec_p += value_len;
4562 q = p + strlen ("%(VALUE)");
4563 }
4564 strcpy (tmp_spec_p, q);
4565
4566 do_self_spec (tmp_spec);
4567}
4568
4569/* Process the given spec string and add any new options to the end
4570 of the switches/n_switches array. */
4571
4572static void
4573do_self_spec (const char *spec)
4574{
4575 do_spec_2 (spec);
4576 do_spec_1 (" ", 0, NULL);
4577
4578 if (argbuf_index > 0)
4579 {
4580 int i, first;
4581
4582 first = n_switches;
4583 n_switches += argbuf_index;
4584 switches = xrealloc (switches,
4585 sizeof (struct switchstr) * (n_switches + 1));
4586
4587 switches[n_switches] = switches[first];
4588 for (i = 0; i < argbuf_index; i++)
4589 {
4590 struct switchstr *sw;
4591
4592 /* Each switch should start with '-'. */
4593 if (argbuf[i][0] != '-')
4594 fatal ("switch '%s' does not start with '-'", argbuf[i]);
4595
4596 sw = &switches[i + first];
4597 sw->part1 = &argbuf[i][1];
4598 sw->args = 0;
4599 sw->live_cond = SWITCH_OK;
4600 sw->validated = 0;
4601 sw->ordering = 0;
4602 }
4603 }
4604}
4605
4606/* Callback for processing %D and %I specs. */
4607
4608struct spec_path_info {
4609 const char *option;
4610 const char *append;
4611 size_t append_len;
4612 bool omit_relative;
4613 bool separate_options;
4614};
4615
4616static void *
4617spec_path (char *path, void *data)
4618{
4619 struct spec_path_info *info = data;
4620 size_t len = 0;
4621 char save = 0;
4622
4623 if (info->omit_relative && !IS_ABSOLUTE_PATH (path))
4624 return NULL;
4625
4626 if (info->append_len != 0)
4627 {
4628 len = strlen (path);
4629 memcpy (path + len, info->append, info->append_len + 1);
4630 }
4631
4632 if (!is_directory (path, true))
4633 return NULL;
4634
4635 do_spec_1 (info->option, 1, NULL);
4636 if (info->separate_options)
4637 do_spec_1 (" ", 0, NULL);
4638
4639 if (info->append_len == 0)
4640 {
4641 len = strlen (path);
4642 save = path[len - 1];
4643 if (IS_DIR_SEPARATOR (path[len - 1]))
4644 path[len - 1] = '\0';
4645 }
4646
4647 do_spec_1 (path, 1, NULL);
4648 do_spec_1 (" ", 0, NULL);
4649
4650 /* Must not damage the original path. */
4651 if (info->append_len == 0)
4652 path[len - 1] = save;
4653
4654 return NULL;
4655}
4656
4657/* Process the sub-spec SPEC as a portion of a larger spec.
4658 This is like processing a whole spec except that we do
4659 not initialize at the beginning and we do not supply a
4660 newline by default at the end.
4661 INSWITCH nonzero means don't process %-sequences in SPEC;
4662 in this case, % is treated as an ordinary character.
4663 This is used while substituting switches.
4664 INSWITCH nonzero also causes SPC not to terminate an argument.
4665
4666 Value is zero unless a line was finished
4667 and the command on that line reported an error. */
4668
4669static int
4670do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4671{
4672 const char *p = spec;
4673 int c;
4674 int i;
4675 const char *string;
4676 int value;
4677
4678 while ((c = *p++))
4679 /* If substituting a switch, treat all chars like letters.
4680 Otherwise, NL, SPC, TAB and % are special. */
4681 switch (inswitch ? 'a' : c)
4682 {
4683 case '\n':
4684 /* End of line: finish any pending argument,
4685 then run the pending command if one has been started. */
4686 if (arg_going)
4687 {
4688 obstack_1grow (&obstack, 0);
4689 string = XOBFINISH (&obstack, const char *);
4690 if (this_is_library_file)
4691 string = find_file (string);
4692 store_arg (string, delete_this_arg, this_is_output_file);
4693 if (this_is_output_file)
4694 outfiles[input_file_number] = string;
4695 }
4696 arg_going = 0;
4697
4698 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4699 {
4700 /* A `|' before the newline means use a pipe here,
4701 but only if -pipe was specified.
4702 Otherwise, execute now and don't pass the `|' as an arg. */
4703 if (use_pipes)
4704 {
4705 input_from_pipe = 1;
4706 break;
4707 }
4708 else
4709 argbuf_index--;
4710 }
4711
4712 set_collect_gcc_options ();
4713
4714 if (argbuf_index > 0)
4715 {
4716 value = execute ();
4717 if (value)
4718 return value;
4719 }
4720 /* Reinitialize for a new command, and for a new argument. */
4721 clear_args ();
4722 arg_going = 0;
4723 delete_this_arg = 0;
4724 this_is_output_file = 0;
4725 this_is_library_file = 0;
4726 input_from_pipe = 0;
4727 break;
4728
4729 case '|':
4730 /* End any pending argument. */
4731 if (arg_going)
4732 {
4733 obstack_1grow (&obstack, 0);
4734 string = XOBFINISH (&obstack, const char *);
4735 if (this_is_library_file)
4736 string = find_file (string);
4737 store_arg (string, delete_this_arg, this_is_output_file);
4738 if (this_is_output_file)
4739 outfiles[input_file_number] = string;
4740 }
4741
4742 /* Use pipe */
4743 obstack_1grow (&obstack, c);
4744 arg_going = 1;
4745 break;
4746
4747 case '\t':
4748 case ' ':
4749 /* Space or tab ends an argument if one is pending. */
4750 if (arg_going)
4751 {
4752 obstack_1grow (&obstack, 0);
4753 string = XOBFINISH (&obstack, const char *);
4754 if (this_is_library_file)
4755 string = find_file (string);
4756 store_arg (string, delete_this_arg, this_is_output_file);
4757 if (this_is_output_file)
4758 outfiles[input_file_number] = string;
4759 }
4760 /* Reinitialize for a new argument. */
4761 arg_going = 0;
4762 delete_this_arg = 0;
4763 this_is_output_file = 0;
4764 this_is_library_file = 0;
4765 break;
4766
4767 case '%':
4768 switch (c = *p++)
4769 {
4770 case 0:
4771 fatal ("spec '%s' invalid", spec);
4772
4773 case 'b':
4774 obstack_grow (&obstack, input_basename, basename_length);
4775 arg_going = 1;
4776 break;
4777
4778 case 'B':
4779 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4780 arg_going = 1;
4781 break;
4782
4783 case 'd':
4784 delete_this_arg = 2;
4785 break;
4786
4787 /* Dump out the directories specified with LIBRARY_PATH,
4788 followed by the absolute directories
4789 that we search for startfiles. */
4790 case 'D':
4791 {
4792 struct spec_path_info info;
4793
4794 info.option = "-L";
4795 info.append_len = 0;
4796#ifdef RELATIVE_PREFIX_NOT_LINKDIR
4797 /* Used on systems which record the specified -L dirs
4798 and use them to search for dynamic linking.
4799 Relative directories always come from -B,
4800 and it is better not to use them for searching
4801 at run time. In particular, stage1 loses. */
4802 info.omit_relative = true;
4803#else
4804 info.omit_relative = false;
4805#endif
4806 info.separate_options = false;
4807
4808 for_each_path (&startfile_prefixes, true, 0, spec_path, &info);
4809 }
4810 break;
4811
4812 case 'e':
4813 /* %efoo means report an error with `foo' as error message
4814 and don't execute any more commands for this file. */
4815 {
4816 const char *q = p;
4817 char *buf;
4818 while (*p != 0 && *p != '\n')
4819 p++;
4820 buf = alloca (p - q + 1);
4821 strncpy (buf, q, p - q);
4822 buf[p - q] = 0;
4823 error ("%s", buf);
4824 return -1;
4825 }
4826 break;
4827 case 'n':
4828 /* %nfoo means report a notice with `foo' on stderr. */
4829 {
4830 const char *q = p;
4831 char *buf;
4832 while (*p != 0 && *p != '\n')
4833 p++;
4834 buf = alloca (p - q + 1);
4835 strncpy (buf, q, p - q);
4836 buf[p - q] = 0;
4837 notice ("%s\n", buf);
4838 if (*p)
4839 p++;
4840 }
4841 break;
4842
4843 case 'j':
4844 {
4845 struct stat st;
4846
4847 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4848 defined, and it is not a directory, and it is
4849 writable, use it. Otherwise, treat this like any
4850 other temporary file. */
4851
4852 if ((!save_temps_flag)
4853 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4854 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4855 {
4856 obstack_grow (&obstack, HOST_BIT_BUCKET,
4857 strlen (HOST_BIT_BUCKET));
4858 delete_this_arg = 0;
4859 arg_going = 1;
4860 break;
4861 }
4862 }
4863 goto create_temp_file;
4864 case '|':
4865 if (use_pipes)
4866 {
4867 obstack_1grow (&obstack, '-');
4868 delete_this_arg = 0;
4869 arg_going = 1;
4870
4871 /* consume suffix */
4872 while (*p == '.' || ISALNUM ((unsigned char) *p))
4873 p++;
4874 if (p[0] == '%' && p[1] == 'O')
4875 p += 2;
4876
4877 break;
4878 }
4879 goto create_temp_file;
4880 case 'm':
4881 if (use_pipes)
4882 {
4883 /* consume suffix */
4884 while (*p == '.' || ISALNUM ((unsigned char) *p))
4885 p++;
4886 if (p[0] == '%' && p[1] == 'O')
4887 p += 2;
4888
4889 break;
4890 }
4891 goto create_temp_file;
4892 case 'g':
4893 case 'u':
4894 case 'U':
4895 create_temp_file:
4896 {
4897 struct temp_name *t;
4898 int suffix_length;
4899 const char *suffix = p;
4900 char *saved_suffix = NULL;
4901
4902 while (*p == '.' || ISALNUM ((unsigned char) *p))
4903 p++;
4904 suffix_length = p - suffix;
4905 if (p[0] == '%' && p[1] == 'O')
4906 {
4907 p += 2;
4908 /* We don't support extra suffix characters after %O. */
4909 if (*p == '.' || ISALNUM ((unsigned char) *p))
4910 fatal ("spec '%s' has invalid '%%0%c'", spec, *p);
4911 if (suffix_length == 0)
4912 suffix = TARGET_OBJECT_SUFFIX;
4913 else
4914 {
4915 saved_suffix
4916 = XNEWVEC (char, suffix_length
4917 + strlen (TARGET_OBJECT_SUFFIX));
4918 strncpy (saved_suffix, suffix, suffix_length);
4919 strcpy (saved_suffix + suffix_length,
4920 TARGET_OBJECT_SUFFIX);
4921 }
4922 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4923 }
4924
4925 /* If the input_filename has the same suffix specified
4926 for the %g, %u, or %U, and -save-temps is specified,
4927 we could end up using that file as an intermediate
4928 thus clobbering the user's source file (.e.g.,
4929 gcc -save-temps foo.s would clobber foo.s with the
4930 output of cpp0). So check for this condition and
4931 generate a temp file as the intermediate. */
4932
4933 if (save_temps_flag)
4934 {
4935 temp_filename_length = basename_length + suffix_length;
4936 temp_filename = alloca (temp_filename_length + 1);
4937 strncpy ((char *) temp_filename, input_basename, basename_length);
4938 strncpy ((char *) temp_filename + basename_length, suffix,
4939 suffix_length);
4940 *((char *) temp_filename + temp_filename_length) = '\0';
4941 if (strcmp (temp_filename, input_filename) != 0)
4942 {
4943#ifndef HOST_LACKS_INODE_NUMBERS
4944 struct stat st_temp;
4945
4946 /* Note, set_input() resets input_stat_set to 0. */
4947 if (input_stat_set == 0)
4948 {
4949 input_stat_set = stat (input_filename, &input_stat);
4950 if (input_stat_set >= 0)
4951 input_stat_set = 1;
4952 }
4953
4954 /* If we have the stat for the input_filename
4955 and we can do the stat for the temp_filename
4956 then the they could still refer to the same
4957 file if st_dev/st_ino's are the same. */
4958 if (input_stat_set != 1
4959 || stat (temp_filename, &st_temp) < 0
4960 || input_stat.st_dev != st_temp.st_dev
4961 || input_stat.st_ino != st_temp.st_ino)
4962#else
4963 /* Just compare canonical pathnames. */
4964 char* input_realname = lrealpath (input_filename);
4965 char* temp_realname = lrealpath (temp_filename);
4966 bool files_differ = strcmp (input_realname, temp_realname);
4967 free (input_realname);
4968 free (temp_realname);
4969 if (files_differ)
4970#endif
4971 {
4972 temp_filename = save_string (temp_filename,
4973 temp_filename_length + 1);
4974 obstack_grow (&obstack, temp_filename,
4975 temp_filename_length);
4976 arg_going = 1;
4977 delete_this_arg = 0;
4978 break;
4979 }
4980 }
4981 }
4982
4983 /* See if we already have an association of %g/%u/%U and
4984 suffix. */
4985 for (t = temp_names; t; t = t->next)
4986 if (t->length == suffix_length
4987 && strncmp (t->suffix, suffix, suffix_length) == 0
4988 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
4989 break;
4990
4991 /* Make a new association if needed. %u and %j
4992 require one. */
4993 if (t == 0 || c == 'u' || c == 'j')
4994 {
4995 if (t == 0)
4996 {
4997 t = xmalloc (sizeof (struct temp_name));
4998 t->next = temp_names;
4999 temp_names = t;
5000 }
5001 t->length = suffix_length;
5002 if (saved_suffix)
5003 {
5004 t->suffix = saved_suffix;
5005 saved_suffix = NULL;
5006 }
5007 else
5008 t->suffix = save_string (suffix, suffix_length);
5009 t->unique = (c == 'u' || c == 'U' || c == 'j');
5010 temp_filename = make_temp_file (t->suffix);
5011 temp_filename_length = strlen (temp_filename);
5012 t->filename = temp_filename;
5013 t->filename_length = temp_filename_length;
5014 }
5015
5016 if (saved_suffix)
5017 free (saved_suffix);
5018
5019 obstack_grow (&obstack, t->filename, t->filename_length);
5020 delete_this_arg = 1;
5021 }
5022 arg_going = 1;
5023 break;
5024
5025 case 'i':
5026 if (combine_inputs)
5027 {
5028 for (i = 0; (int) i < n_infiles; i++)
5029 if ((!infiles[i].language) || (infiles[i].language[0] != '*'))
5030 if (infiles[i].incompiler == input_file_compiler)
5031 {
5032 store_arg (infiles[i].name, 0, 0);
5033 infiles[i].compiled = true;
5034 }
5035 }
5036 else
5037 {
5038 obstack_grow (&obstack, input_filename, input_filename_length);
5039 arg_going = 1;
5040 }
5041 break;
5042
5043 case 'I':
5044 {
5045 struct spec_path_info info;
5046
5047 if (multilib_dir)
5048 {
5049 do_spec_1 ("-imultilib", 1, NULL);
5050 /* Make this a separate argument. */
5051 do_spec_1 (" ", 0, NULL);
5052 do_spec_1 (multilib_dir, 1, NULL);
5053 do_spec_1 (" ", 0, NULL);
5054 }
5055
5056 if (gcc_exec_prefix)
5057 {
5058 do_spec_1 ("-iprefix", 1, NULL);
5059 /* Make this a separate argument. */
5060 do_spec_1 (" ", 0, NULL);
5061 do_spec_1 (gcc_exec_prefix, 1, NULL);
5062 do_spec_1 (" ", 0, NULL);
5063 }
5064
5065 if (target_system_root_changed ||
5066 (target_system_root && target_sysroot_hdrs_suffix))
5067 {
5068 do_spec_1 ("-isysroot", 1, NULL);
5069 /* Make this a separate argument. */
5070 do_spec_1 (" ", 0, NULL);
5071 do_spec_1 (target_system_root, 1, NULL);
5072 if (target_sysroot_hdrs_suffix)
5073 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
5074 do_spec_1 (" ", 0, NULL);
5075 }
5076
5077 info.option = "-isystem";
5078 info.append = "include";
5079 info.append_len = strlen (info.append);
5080 info.omit_relative = false;
5081 info.separate_options = true;
5082
5083 for_each_path (&include_prefixes, false, info.append_len,
5084 spec_path, &info);
5085 }
5086 break;
5087
5088 case 'o':
5089 {
5090 int max = n_infiles;
5091 max += lang_specific_extra_outfiles;
5092
5093 for (i = 0; i < max; i++)
5094 if (outfiles[i])
5095 store_arg (outfiles[i], 0, 0);
5096 break;
5097 }
5098
5099 case 'O':
5100 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
5101 arg_going = 1;
5102 break;
5103
5104 case 's':
5105 this_is_library_file = 1;
5106 break;
5107
5108 case 'V':
5109 outfiles[input_file_number] = NULL;
5110 break;
5111
5112 case 'w':
5113 this_is_output_file = 1;
5114 break;
5115
5116 case 'W':
5117 {
5118 int cur_index = argbuf_index;
5119 /* Handle the {...} following the %W. */
5120 if (*p != '{')
5121 fatal ("spec '%s' has invalid '%%W%c", spec, *p);
5122 p = handle_braces (p + 1);
5123 if (p == 0)
5124 return -1;
5125 /* End any pending argument. */
5126 if (arg_going)
5127 {
5128 obstack_1grow (&obstack, 0);
5129 string = XOBFINISH (&obstack, const char *);
5130 if (this_is_library_file)
5131 string = find_file (string);
5132 store_arg (string, delete_this_arg, this_is_output_file);
5133 if (this_is_output_file)
5134 outfiles[input_file_number] = string;
5135 arg_going = 0;
5136 }
5137 /* If any args were output, mark the last one for deletion
5138 on failure. */
5139 if (argbuf_index != cur_index)
5140 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
5141 break;
5142 }
5143
5144 /* %x{OPTION} records OPTION for %X to output. */
5145 case 'x':
5146 {
5147 const char *p1 = p;
5148 char *string;
5149
5150 /* Skip past the option value and make a copy. */
5151 if (*p != '{')
5152 fatal ("spec '%s' has invalid '%%x%c'", spec, *p);
5153 while (*p++ != '}')
5154 ;
5155 string = save_string (p1 + 1, p - p1 - 2);
5156
5157 /* See if we already recorded this option. */
5158 for (i = 0; i < n_linker_options; i++)
5159 if (! strcmp (string, linker_options[i]))
5160 {
5161 free (string);
5162 return 0;
5163 }
5164
5165 /* This option is new; add it. */
5166 add_linker_option (string, strlen (string));
5167 }
5168 break;
5169
5170 /* Dump out the options accumulated previously using %x. */
5171 case 'X':
5172 for (i = 0; i < n_linker_options; i++)
5173 {
5174 do_spec_1 (linker_options[i], 1, NULL);
5175 /* Make each accumulated option a separate argument. */
5176 do_spec_1 (" ", 0, NULL);
5177 }
5178 break;
5179
5180 /* Dump out the options accumulated previously using -Wa,. */
5181 case 'Y':
5182 for (i = 0; i < n_assembler_options; i++)
5183 {
5184 do_spec_1 (assembler_options[i], 1, NULL);
5185 /* Make each accumulated option a separate argument. */
5186 do_spec_1 (" ", 0, NULL);
5187 }
5188 break;
5189
5190 /* Dump out the options accumulated previously using -Wp,. */
5191 case 'Z':
5192 for (i = 0; i < n_preprocessor_options; i++)
5193 {
5194 do_spec_1 (preprocessor_options[i], 1, NULL);
5195 /* Make each accumulated option a separate argument. */
5196 do_spec_1 (" ", 0, NULL);
5197 }
5198 break;
5199
5200 /* Here are digits and numbers that just process
5201 a certain constant string as a spec. */
5202
5203 case '1':
5204 value = do_spec_1 (cc1_spec, 0, NULL);
5205 if (value != 0)
5206 return value;
5207 break;
5208
5209 case '2':
5210 value = do_spec_1 (cc1plus_spec, 0, NULL);
5211 if (value != 0)
5212 return value;
5213 break;
5214
5215 case 'a':
5216 value = do_spec_1 (asm_spec, 0, NULL);
5217 if (value != 0)
5218 return value;
5219 break;
5220
5221 case 'A':
5222 value = do_spec_1 (asm_final_spec, 0, NULL);
5223 if (value != 0)
5224 return value;
5225 break;
5226
5227 case 'C':
5228 {
5229 const char *const spec
5230 = (input_file_compiler->cpp_spec
5231 ? input_file_compiler->cpp_spec
5232 : cpp_spec);
5233 value = do_spec_1 (spec, 0, NULL);
5234 if (value != 0)
5235 return value;
5236 }
5237 break;
5238
5239 case 'E':
5240 value = do_spec_1 (endfile_spec, 0, NULL);
5241 if (value != 0)
5242 return value;
5243 break;
5244
5245 case 'l':
5246 value = do_spec_1 (link_spec, 0, NULL);
5247 if (value != 0)
5248 return value;
5249 break;
5250
5251 case 'L':
5252 value = do_spec_1 (lib_spec, 0, NULL);
5253 if (value != 0)
5254 return value;
5255 break;
5256
5257 case 'G':
5258 value = do_spec_1 (libgcc_spec, 0, NULL);
5259 if (value != 0)
5260 return value;
5261 break;
5262
5263 case 'R':
5264 /* We assume there is a directory
5265 separator at the end of this string. */
5266 if (target_system_root)
5267 {
5268 obstack_grow (&obstack, target_system_root,
5269 strlen (target_system_root));
5270 if (target_sysroot_suffix)
5271 obstack_grow (&obstack, target_sysroot_suffix,
5272 strlen (target_sysroot_suffix));
5273 }
5274 break;
5275
5276 case 'S':
5277 value = do_spec_1 (startfile_spec, 0, NULL);
5278 if (value != 0)
5279 return value;
5280 break;
5281
5282 /* Here we define characters other than letters and digits. */
5283
5284 case '{':
5285 p = handle_braces (p);
5286 if (p == 0)
5287 return -1;
5288 break;
5289
5290 case ':':
5291 p = handle_spec_function (p);
5292 if (p == 0)
5293 return -1;
5294 break;
5295
5296 case '%':
5297 obstack_1grow (&obstack, '%');
5298 break;
5299
5300 case '.':
5301 {
5302 unsigned len = 0;
5303
5304 while (p[len] && p[len] != ' ' && p[len] != '%')
5305 len++;
5306 suffix_subst = save_string (p - 1, len + 1);
5307 p += len;
5308 }
5309 break;
5310
5311 /* Henceforth ignore the option(s) matching the pattern
5312 after the %<. */
5313 case '<':
5314 {
5315 unsigned len = 0;
5316 int have_wildcard = 0;
5317 int i;
5318
5319 while (p[len] && p[len] != ' ' && p[len] != '\t')
5320 len++;
5321
5322 if (p[len-1] == '*')
5323 have_wildcard = 1;
5324
5325 for (i = 0; i < n_switches; i++)
5326 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5327 && (have_wildcard || switches[i].part1[len] == '\0'))
5328 {
5329 switches[i].live_cond = SWITCH_IGNORE;
5330 switches[i].validated = 1;
5331 }
5332
5333 p += len;
5334 }
5335 break;
5336
5337 case '*':
5338 if (soft_matched_part)
5339 {
5340 do_spec_1 (soft_matched_part, 1, NULL);
5341 do_spec_1 (" ", 0, NULL);
5342 }
5343 else
5344 /* Catch the case where a spec string contains something like
5345 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5346 hand side of the :. */
5347 error ("spec failure: '%%*' has not been initialized by pattern match");
5348 break;
5349
5350 /* Process a string found as the value of a spec given by name.
5351 This feature allows individual machine descriptions
5352 to add and use their own specs.
5353 %[...] modifies -D options the way %P does;
5354 %(...) uses the spec unmodified. */
5355 case '[':
5356 error ("warning: use of obsolete %%[ operator in specs");
5357 case '(':
5358 {
5359 const char *name = p;
5360 struct spec_list *sl;
5361 int len;
5362
5363 /* The string after the S/P is the name of a spec that is to be
5364 processed. */
5365 while (*p && *p != ')' && *p != ']')
5366 p++;
5367
5368 /* See if it's in the list. */
5369 for (len = p - name, sl = specs; sl; sl = sl->next)
5370 if (sl->name_len == len && !strncmp (sl->name, name, len))
5371 {
5372 name = *(sl->ptr_spec);
5373#ifdef DEBUG_SPECS
5374 notice ("Processing spec %c%s%c, which is '%s'\n",
5375 c, sl->name, (c == '(') ? ')' : ']', name);
5376#endif
5377 break;
5378 }
5379
5380 if (sl)
5381 {
5382 if (c == '(')
5383 {
5384 value = do_spec_1 (name, 0, NULL);
5385 if (value != 0)
5386 return value;
5387 }
5388 else
5389 {
5390 char *x = alloca (strlen (name) * 2 + 1);
5391 char *buf = x;
5392 const char *y = name;
5393 int flag = 0;
5394
5395 /* Copy all of NAME into BUF, but put __ after
5396 every -D and at the end of each arg. */
5397 while (1)
5398 {
5399 if (! strncmp (y, "-D", 2))
5400 {
5401 *x++ = '-';
5402 *x++ = 'D';
5403 *x++ = '_';
5404 *x++ = '_';
5405 y += 2;
5406 flag = 1;
5407 continue;
5408 }
5409 else if (flag
5410 && (*y == ' ' || *y == '\t' || *y == '='
5411 || *y == '}' || *y == 0))
5412 {
5413 *x++ = '_';
5414 *x++ = '_';
5415 flag = 0;
5416 }
5417 if (*y == 0)
5418 break;
5419 else
5420 *x++ = *y++;
5421 }
5422 *x = 0;
5423
5424 value = do_spec_1 (buf, 0, NULL);
5425 if (value != 0)
5426 return value;
5427 }
5428 }
5429
5430 /* Discard the closing paren or bracket. */
5431 if (*p)
5432 p++;
5433 }
5434 break;
5435
5436 default:
5437 error ("spec failure: unrecognized spec option '%c'", c);
5438 break;
5439 }
5440 break;
5441
5442 case '\\':
5443 /* Backslash: treat next character as ordinary. */
5444 c = *p++;
5445
5446 /* Fall through. */
5447 default:
5448 /* Ordinary character: put it into the current argument. */
5449 obstack_1grow (&obstack, c);
5450 arg_going = 1;
5451 }
5452
5453 /* End of string. If we are processing a spec function, we need to
5454 end any pending argument. */
5455 if (processing_spec_function && arg_going)
5456 {
5457 obstack_1grow (&obstack, 0);
5458 string = XOBFINISH (&obstack, const char *);
5459 if (this_is_library_file)
5460 string = find_file (string);
5461 store_arg (string, delete_this_arg, this_is_output_file);
5462 if (this_is_output_file)
5463 outfiles[input_file_number] = string;
5464 arg_going = 0;
5465 }
5466
5467 return 0;
5468}
5469
5470/* Look up a spec function. */
5471
5472static const struct spec_function *
5473lookup_spec_function (const char *name)
5474{
5475 const struct spec_function *sf;
5476
5477 for (sf = static_spec_functions; sf->name != NULL; sf++)
5478 if (strcmp (sf->name, name) == 0)
5479 return sf;
5480
5481 return NULL;
5482}
5483
5484/* Evaluate a spec function. */
5485
5486static const char *
5487eval_spec_function (const char *func, const char *args)
5488{
5489 const struct spec_function *sf;
5490 const char *funcval;
5491
5492 /* Saved spec processing context. */
5493 int save_argbuf_index;
5494 int save_argbuf_length;
5495 const char **save_argbuf;
5496
5497 int save_arg_going;
5498 int save_delete_this_arg;
5499 int save_this_is_output_file;
5500 int save_this_is_library_file;
5501 int save_input_from_pipe;
5502 const char *save_suffix_subst;
5503
5504
5505 sf = lookup_spec_function (func);
5506 if (sf == NULL)
5507 fatal ("unknown spec function '%s'", func);
5508
5509 /* Push the spec processing context. */
5510 save_argbuf_index = argbuf_index;
5511 save_argbuf_length = argbuf_length;
5512 save_argbuf = argbuf;
5513
5514 save_arg_going = arg_going;
5515 save_delete_this_arg = delete_this_arg;
5516 save_this_is_output_file = this_is_output_file;
5517 save_this_is_library_file = this_is_library_file;
5518 save_input_from_pipe = input_from_pipe;
5519 save_suffix_subst = suffix_subst;
5520
5521 /* Create a new spec processing context, and build the function
5522 arguments. */
5523
5524 alloc_args ();
5525 if (do_spec_2 (args) < 0)
5526 fatal ("error in args to spec function '%s'", func);
5527
5528 /* argbuf_index is an index for the next argument to be inserted, and
5529 so contains the count of the args already inserted. */
5530
5531 funcval = (*sf->func) (argbuf_index, argbuf);
5532
5533 /* Pop the spec processing context. */
5534 argbuf_index = save_argbuf_index;
5535 argbuf_length = save_argbuf_length;
5536 free (argbuf);
5537 argbuf = save_argbuf;
5538
5539 arg_going = save_arg_going;
5540 delete_this_arg = save_delete_this_arg;
5541 this_is_output_file = save_this_is_output_file;
5542 this_is_library_file = save_this_is_library_file;
5543 input_from_pipe = save_input_from_pipe;
5544 suffix_subst = save_suffix_subst;
5545
5546 return funcval;
5547}
5548
5549/* Handle a spec function call of the form:
5550
5551 %:function(args)
5552
5553 ARGS is processed as a spec in a separate context and split into an
5554 argument vector in the normal fashion. The function returns a string
5555 containing a spec which we then process in the caller's context, or
5556 NULL if no processing is required. */
5557
5558static const char *
5559handle_spec_function (const char *p)
5560{
5561 char *func, *args;
5562 const char *endp, *funcval;
5563 int count;
5564
5565 processing_spec_function++;
5566
5567 /* Get the function name. */
5568 for (endp = p; *endp != '\0'; endp++)
5569 {
5570 if (*endp == '(') /* ) */
5571 break;
5572 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5573 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5574 fatal ("malformed spec function name");
5575 }
5576 if (*endp != '(') /* ) */
5577 fatal ("no arguments for spec function");
5578 func = save_string (p, endp - p);
5579 p = ++endp;
5580
5581 /* Get the arguments. */
5582 for (count = 0; *endp != '\0'; endp++)
5583 {
5584 /* ( */
5585 if (*endp == ')')
5586 {
5587 if (count == 0)
5588 break;
5589 count--;
5590 }
5591 else if (*endp == '(') /* ) */
5592 count++;
5593 }
5594 /* ( */
5595 if (*endp != ')')
5596 fatal ("malformed spec function arguments");
5597 args = save_string (p, endp - p);
5598 p = ++endp;
5599
5600 /* p now points to just past the end of the spec function expression. */
5601
5602 funcval = eval_spec_function (func, args);
5603 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5604 p = NULL;
5605
5606 free (func);
5607 free (args);
5608
5609 processing_spec_function--;
5610
5611 return p;
5612}
5613
5614/* Inline subroutine of handle_braces. Returns true if the current
5615 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5616static inline bool
5617input_suffix_matches (const char *atom, const char *end_atom)
5618{
5619 /* We special case the semantics of {.s:...} and {.S:...} and their
5620 negative variants. Instead of testing the input filename suffix,
5621 we test whether the input source file is an assembler file or an
5622 assembler-with-cpp file respectively. This allows us to correctly
5623 handle the -x command line option. */
5624
5625 if (atom + 1 == end_atom
5626 && input_file_compiler
5627 && input_file_compiler->suffix)
5628 {
5629 if (*atom == 's')
5630 return !strcmp (input_file_compiler->suffix, "@assembler");
5631 if (*atom == 'S')
5632 return !strcmp (input_file_compiler->suffix, "@assembler-with-cpp");
5633 }
5634
5635 return (input_suffix
5636 && !strncmp (input_suffix, atom, end_atom - atom)
5637 && input_suffix[end_atom - atom] == '\0');
5638}
5639
5640/* Subroutine of handle_braces. Returns true if a switch
5641 matching the atom bracketed by ATOM and END_ATOM appeared on the
5642 command line. */
5643static bool
5644switch_matches (const char *atom, const char *end_atom, int starred)
5645{
5646 int i;
5647 int len = end_atom - atom;
5648 int plen = starred ? len : -1;
5649
5650 for (i = 0; i < n_switches; i++)
5651 if (!strncmp (switches[i].part1, atom, len)
5652 && (starred || switches[i].part1[len] == '\0')
5653 && check_live_switch (i, plen))
5654 return true;
5655
5656 return false;
5657}
5658
5659/* Inline subroutine of handle_braces. Mark all of the switches which
5660 match ATOM (extends to END_ATOM; STARRED indicates whether there
5661 was a star after the atom) for later processing. */
5662static inline void
5663mark_matching_switches (const char *atom, const char *end_atom, int starred)
5664{
5665 int i;
5666 int len = end_atom - atom;
5667 int plen = starred ? len : -1;
5668
5669 for (i = 0; i < n_switches; i++)
5670 if (!strncmp (switches[i].part1, atom, len)
5671 && (starred || switches[i].part1[len] == '\0')
5672 && check_live_switch (i, plen))
5673 switches[i].ordering = 1;
5674}
5675
5676/* Inline subroutine of handle_braces. Process all the currently
5677 marked switches through give_switch, and clear the marks. */
5678static inline void
5679process_marked_switches (void)
5680{
5681 int i;
5682
5683 for (i = 0; i < n_switches; i++)
5684 if (switches[i].ordering == 1)
5685 {
5686 switches[i].ordering = 0;
5687 give_switch (i, 0);
5688 }
5689}
5690
5691/* Handle a %{ ... } construct. P points just inside the leading {.
5692 Returns a pointer one past the end of the brace block, or 0
5693 if we call do_spec_1 and that returns -1. */
5694
5695static const char *
5696handle_braces (const char *p)
5697{
5698 const char *atom, *end_atom;
5699 const char *d_atom = NULL, *d_end_atom = NULL;
5700 const char *orig = p;
5701
5702 bool a_is_suffix;
5703 bool a_is_starred;
5704 bool a_is_negated;
5705 bool a_matched;
5706
5707 bool a_must_be_last = false;
5708 bool ordered_set = false;
5709 bool disjunct_set = false;
5710 bool disj_matched = false;
5711 bool disj_starred = true;
5712 bool n_way_choice = false;
5713 bool n_way_matched = false;
5714
5715#define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5716
5717 do
5718 {
5719 if (a_must_be_last)
5720 goto invalid;
5721
5722 /* Scan one "atom" (S in the description above of %{}, possibly
5723 with !, ., or * modifiers). */
5724 a_matched = a_is_suffix = a_is_starred = a_is_negated = false;
5725
5726 SKIP_WHITE();
5727 if (*p == '!')
5728 p++, a_is_negated = true;
5729
5730 SKIP_WHITE();
5731 if (*p == '.')
5732 p++, a_is_suffix = true;
5733
5734 atom = p;
5735 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5736 || *p == ',' || *p == '.' || *p == '@')
5737 p++;
5738 end_atom = p;
5739
5740 if (*p == '*')
5741 p++, a_is_starred = 1;
5742
5743 SKIP_WHITE();
5744 switch (*p)
5745 {
5746 case '&': case '}':
5747 /* Substitute the switch(es) indicated by the current atom. */
5748 ordered_set = true;
5749 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5750 || atom == end_atom)
5751 goto invalid;
5752
5753 mark_matching_switches (atom, end_atom, a_is_starred);
5754
5755 if (*p == '}')
5756 process_marked_switches ();
5757 break;
5758
5759 case '|': case ':':
5760 /* Substitute some text if the current atom appears as a switch
5761 or suffix. */
5762 disjunct_set = true;
5763 if (ordered_set)
5764 goto invalid;
5765
5766 if (atom == end_atom)
5767 {
5768 if (!n_way_choice || disj_matched || *p == '|'
5769 || a_is_negated || a_is_suffix || a_is_starred)
5770 goto invalid;
5771
5772 /* An empty term may appear as the last choice of an
5773 N-way choice set; it means "otherwise". */
5774 a_must_be_last = true;
5775 disj_matched = !n_way_matched;
5776 disj_starred = false;
5777 }
5778 else
5779 {
5780 if (a_is_suffix && a_is_starred)
5781 goto invalid;
5782
5783 if (!a_is_starred)
5784 disj_starred = false;
5785
5786 /* Don't bother testing this atom if we already have a
5787 match. */
5788 if (!disj_matched && !n_way_matched)
5789 {
5790 if (a_is_suffix)
5791 a_matched = input_suffix_matches (atom, end_atom);
5792 else
5793 a_matched = switch_matches (atom, end_atom, a_is_starred);
5794
5795 if (a_matched != a_is_negated)
5796 {
5797 disj_matched = true;
5798 d_atom = atom;
5799 d_end_atom = end_atom;
5800 }
5801 }
5802 }
5803
5804 if (*p == ':')
5805 {
5806 /* Found the body, that is, the text to substitute if the
5807 current disjunction matches. */
5808 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5809 disj_matched && !n_way_matched);
5810 if (p == 0)
5811 return 0;
5812
5813 /* If we have an N-way choice, reset state for the next
5814 disjunction. */
5815 if (*p == ';')
5816 {
5817 n_way_choice = true;
5818 n_way_matched |= disj_matched;
5819 disj_matched = false;
5820 disj_starred = true;
5821 d_atom = d_end_atom = NULL;
5822 }
5823 }
5824 break;
5825
5826 default:
5827 goto invalid;
5828 }
5829 }
5830 while (*p++ != '}');
5831
5832 return p;
5833
5834 invalid:
5835 fatal ("braced spec '%s' is invalid at '%c'", orig, *p);
5836
5837#undef SKIP_WHITE
5838}
5839
5840/* Subroutine of handle_braces. Scan and process a brace substitution body
5841 (X in the description of %{} syntax). P points one past the colon;
5842 ATOM and END_ATOM bracket the first atom which was found to be true
5843 (present) in the current disjunction; STARRED indicates whether all
5844 the atoms in the current disjunction were starred (for syntax validation);
5845 MATCHED indicates whether the disjunction matched or not, and therefore
5846 whether or not the body is to be processed through do_spec_1 or just
5847 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5848 returns -1. */
5849
5850static const char *
5851process_brace_body (const char *p, const char *atom, const char *end_atom,
5852 int starred, int matched)
5853{
5854 const char *body, *end_body;
5855 unsigned int nesting_level;
5856 bool have_subst = false;
5857
5858 /* Locate the closing } or ;, honoring nested braces.
5859 Trim trailing whitespace. */
5860 body = p;
5861 nesting_level = 1;
5862 for (;;)
5863 {
5864 if (*p == '{')
5865 nesting_level++;
5866 else if (*p == '}')
5867 {
5868 if (!--nesting_level)
5869 break;
5870 }
5871 else if (*p == ';' && nesting_level == 1)
5872 break;
5873 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
5874 have_subst = true;
5875 else if (*p == '\0')
5876 goto invalid;
5877 p++;
5878 }
5879
5880 end_body = p;
5881 while (end_body[-1] == ' ' || end_body[-1] == '\t')
5882 end_body--;
5883
5884 if (have_subst && !starred)
5885 goto invalid;
5886
5887 if (matched)
5888 {
5889 /* Copy the substitution body to permanent storage and execute it.
5890 If have_subst is false, this is a simple matter of running the
5891 body through do_spec_1... */
5892 char *string = save_string (body, end_body - body);
5893 if (!have_subst)
5894 {
5895 if (do_spec_1 (string, 0, NULL) < 0)
5896 return 0;
5897 }
5898 else
5899 {
5900 /* ... but if have_subst is true, we have to process the
5901 body once for each matching switch, with %* set to the
5902 variant part of the switch. */
5903 unsigned int hard_match_len = end_atom - atom;
5904 int i;
5905
5906 for (i = 0; i < n_switches; i++)
5907 if (!strncmp (switches[i].part1, atom, hard_match_len)
5908 && check_live_switch (i, hard_match_len))
5909 {
5910 if (do_spec_1 (string, 0,
5911 &switches[i].part1[hard_match_len]) < 0)
5912 return 0;
5913 /* Pass any arguments this switch has. */
5914 give_switch (i, 1);
5915 suffix_subst = NULL;
5916 }
5917 }
5918 }
5919
5920 return p;
5921
5922 invalid:
5923 fatal ("braced spec body '%s' is invalid", body);
5924}
5925
5926/* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5927 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5928 spec, or -1 if either exact match or %* is used.
5929
5930 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5931 whose value does not begin with "no-" is obsoleted by the same value
5932 with the "no-", similarly for a switch with the "no-" prefix. */
5933
5934static int
5935check_live_switch (int switchnum, int prefix_length)
5936{
5937 const char *name = switches[switchnum].part1;
5938 int i;
5939
5940 /* In the common case of {<at-most-one-letter>*}, a negating
5941 switch would always match, so ignore that case. We will just
5942 send the conflicting switches to the compiler phase. */
5943 if (prefix_length >= 0 && prefix_length <= 1)
5944 return 1;
5945
5946 /* If we already processed this switch and determined if it was
5947 live or not, return our past determination. */
5948 if (switches[switchnum].live_cond != 0)
5949 return switches[switchnum].live_cond > 0;
5950
5951 /* Now search for duplicate in a manner that depends on the name. */
5952 switch (*name)
5953 {
5954 case 'O':
5955 for (i = switchnum + 1; i < n_switches; i++)
5956 if (switches[i].part1[0] == 'O')
5957 {
5958 switches[switchnum].validated = 1;
5959 switches[switchnum].live_cond = SWITCH_FALSE;
5960 return 0;
5961 }
5962 break;
5963
5964 case 'W': case 'f': case 'm':
5965 if (! strncmp (name + 1, "no-", 3))
5966 {
5967 /* We have Xno-YYY, search for XYYY. */
5968 for (i = switchnum + 1; i < n_switches; i++)
5969 if (switches[i].part1[0] == name[0]
5970 && ! strcmp (&switches[i].part1[1], &name[4]))
5971 {
5972 switches[switchnum].validated = 1;
5973 switches[switchnum].live_cond = SWITCH_FALSE;
5974 return 0;
5975 }
5976 }
5977 else
5978 {
5979 /* We have XYYY, search for Xno-YYY. */
5980 for (i = switchnum + 1; i < n_switches; i++)
5981 if (switches[i].part1[0] == name[0]
5982 && switches[i].part1[1] == 'n'
5983 && switches[i].part1[2] == 'o'
5984 && switches[i].part1[3] == '-'
5985 && !strcmp (&switches[i].part1[4], &name[1]))
5986 {
5987 switches[switchnum].validated = 1;
5988 switches[switchnum].live_cond = SWITCH_FALSE;
5989 return 0;
5990 }
5991 }
5992 break;
5993 }
5994
5995 /* Otherwise the switch is live. */
5996 switches[switchnum].live_cond = SWITCH_LIVE;
5997 return 1;
5998}
5999
6000/* Pass a switch to the current accumulating command
6001 in the same form that we received it.
6002 SWITCHNUM identifies the switch; it is an index into
6003 the vector of switches gcc received, which is `switches'.
6004 This cannot fail since it never finishes a command line.
6005
6006 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
6007
6008static void
6009give_switch (int switchnum, int omit_first_word)
6010{
6011 if (switches[switchnum].live_cond == SWITCH_IGNORE)
6012 return;
6013
6014 if (!omit_first_word)
6015 {
6016 do_spec_1 ("-", 0, NULL);
6017 do_spec_1 (switches[switchnum].part1, 1, NULL);
6018 }
6019
6020 if (switches[switchnum].args != 0)
6021 {
6022 const char **p;
6023 for (p = switches[switchnum].args; *p; p++)
6024 {
6025 const char *arg = *p;
6026
6027 do_spec_1 (" ", 0, NULL);
6028 if (suffix_subst)
6029 {
6030 unsigned length = strlen (arg);
6031 int dot = 0;
6032
6033 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
6034 if (arg[length] == '.')
6035 {
6036 ((char *)arg)[length] = 0;
6037 dot = 1;
6038 break;
6039 }
6040 do_spec_1 (arg, 1, NULL);
6041 if (dot)
6042 ((char *)arg)[length] = '.';
6043 do_spec_1 (suffix_subst, 1, NULL);
6044 }
6045 else
6046 do_spec_1 (arg, 1, NULL);
6047 }
6048 }
6049
6050 do_spec_1 (" ", 0, NULL);
6051 switches[switchnum].validated = 1;
6052}
6053
6054/* Search for a file named NAME trying various prefixes including the
6055 user's -B prefix and some standard ones.
6056 Return the absolute file name found. If nothing is found, return NAME. */
6057
6058static const char *
6059find_file (const char *name)
6060{
6061 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true);
6062 return newname ? newname : name;
6063}
6064
6065/* Determine whether a directory exists. If LINKER, return 0 for
6066 certain fixed names not needed by the linker. */
6067
6068static int
6069is_directory (const char *path1, bool linker)
6070{
6071 int len1;
6072 char *path;
6073 char *cp;
6074 struct stat st;
6075
6076 /* Ensure the string ends with "/.". The resulting path will be a
6077 directory even if the given path is a symbolic link. */
6078 len1 = strlen (path1);
6079 path = alloca (3 + len1);
6080 memcpy (path, path1, len1);
6081 cp = path + len1;
6082 if (!IS_DIR_SEPARATOR (cp[-1]))
6083 *cp++ = DIR_SEPARATOR;
6084 *cp++ = '.';
6085 *cp = '\0';
6086
6087#ifndef FREEBSD_NATIVE
6088 /* Exclude directories that the linker is known to search. */
6089 if (linker
6090 && IS_DIR_SEPARATOR (path[0])
6091 && ((cp - path == 6
6092 && strncmp (path + 1, "lib", 3) == 0)
6093 || (cp - path == 10
6094 && strncmp (path + 1, "usr", 3) == 0
6095 && IS_DIR_SEPARATOR (path[4])
6096 && strncmp (path + 5, "lib", 3) == 0)))
6097 return 0;
6098#endif /* FREEBSD_NATIVE */
6099
6100 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
6101}
6102
6103/* Set up the various global variables to indicate that we're processing
6104 the input file named FILENAME. */
6105
6106void
6107set_input (const char *filename)
6108{
6109 const char *p;
6110
6111 input_filename = filename;
6112 input_filename_length = strlen (input_filename);
6113
6114 input_basename = input_filename;
6115#ifdef HAVE_DOS_BASED_FILE_SYSTEM
6116 /* Skip drive name so 'x:foo' is handled properly. */
6117 if (input_basename[1] == ':')
6118 input_basename += 2;
6119#endif
6120 for (p = input_basename; *p; p++)
6121 if (IS_DIR_SEPARATOR (*p))
6122 input_basename = p + 1;
6123
6124 /* Find a suffix starting with the last period,
6125 and set basename_length to exclude that suffix. */
6126 basename_length = strlen (input_basename);
6127 suffixed_basename_length = basename_length;
6128 p = input_basename + basename_length;
6129 while (p != input_basename && *p != '.')
6130 --p;
6131 if (*p == '.' && p != input_basename)
6132 {
6133 basename_length = p - input_basename;
6134 input_suffix = p + 1;
6135 }
6136 else
6137 input_suffix = "";
6138
6139 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
6140 we will need to do a stat on the input_filename. The
6141 INPUT_STAT_SET signals that the stat is needed. */
6142 input_stat_set = 0;
6143}
6144
6145/* On fatal signals, delete all the temporary files. */
6146
6147static void
6148fatal_error (int signum)
6149{
6150 signal (signum, SIG_DFL);
6151 delete_failure_queue ();
6152 delete_temp_files ();
6153 /* Get the same signal again, this time not handled,
6154 so its normal effect occurs. */
6155 kill (getpid (), signum);
6156}
6157
6158extern int main (int, char **);
6159
6160int
6161main (int argc, char **argv)
6162{
6163 size_t i;
6164 int value;
6165 int linker_was_run = 0;
6166 int lang_n_infiles = 0;
6167 int num_linker_inputs = 0;
6168 char *explicit_link_files;
6169 char *specs_file;
6170 const char *p;
6171 struct user_specs *uptr;
6172
6173 p = argv[0] + strlen (argv[0]);
6174 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
6175 --p;
6176 programname = p;
6177
6178 xmalloc_set_program_name (programname);
6179
6180 expandargv (&argc, &argv);
6181
6182 prune_options (&argc, &argv);
6183
6184#ifdef GCC_DRIVER_HOST_INITIALIZATION
6185 /* Perform host dependent initialization when needed. */
6186 GCC_DRIVER_HOST_INITIALIZATION;
6187#endif
6188
6189 /* Unlock the stdio streams. */
6190 unlock_std_streams ();
6191
6192 gcc_init_libintl ();
6193
6194 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
6195 signal (SIGINT, fatal_error);
6196#ifdef SIGHUP
6197 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
6198 signal (SIGHUP, fatal_error);
6199#endif
6200 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
6201 signal (SIGTERM, fatal_error);
6202#ifdef SIGPIPE
6203 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
6204 signal (SIGPIPE, fatal_error);
6205#endif
6206#ifdef SIGCHLD
6207 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6208 receive the signal. A different setting is inheritable */
6209 signal (SIGCHLD, SIG_DFL);
6210#endif
6211
6212 /* Allocate the argument vector. */
6213 alloc_args ();
6214
6215 obstack_init (&obstack);
6216
6217 /* Build multilib_select, et. al from the separate lines that make up each
6218 multilib selection. */
6219 {
6220 const char *const *q = multilib_raw;
6221 int need_space;
6222
6223 obstack_init (&multilib_obstack);
6224 while ((p = *q++) != (char *) 0)
6225 obstack_grow (&multilib_obstack, p, strlen (p));
6226
6227 obstack_1grow (&multilib_obstack, 0);
6228 multilib_select = XOBFINISH (&multilib_obstack, const char *);
6229
6230 q = multilib_matches_raw;
6231 while ((p = *q++) != (char *) 0)
6232 obstack_grow (&multilib_obstack, p, strlen (p));
6233
6234 obstack_1grow (&multilib_obstack, 0);
6235 multilib_matches = XOBFINISH (&multilib_obstack, const char *);
6236
6237 q = multilib_exclusions_raw;
6238 while ((p = *q++) != (char *) 0)
6239 obstack_grow (&multilib_obstack, p, strlen (p));
6240
6241 obstack_1grow (&multilib_obstack, 0);
6242 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *);
6243
6244 need_space = FALSE;
6245 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
6246 {
6247 if (need_space)
6248 obstack_1grow (&multilib_obstack, ' ');
6249 obstack_grow (&multilib_obstack,
6250 multilib_defaults_raw[i],
6251 strlen (multilib_defaults_raw[i]));
6252 need_space = TRUE;
6253 }
6254
6255 obstack_1grow (&multilib_obstack, 0);
6256 multilib_defaults = XOBFINISH (&multilib_obstack, const char *);
6257 }
6258
6259 /* Set up to remember the pathname of gcc and any options
6260 needed for collect. We use argv[0] instead of programname because
6261 we need the complete pathname. */
6262 obstack_init (&collect_obstack);
6263 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6264 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6265 putenv (XOBFINISH (&collect_obstack, char *));
6266
6267#ifdef INIT_ENVIRONMENT
6268 /* Set up any other necessary machine specific environment variables. */
6269 putenv (INIT_ENVIRONMENT);
6270#endif
6271
6272 /* Make a table of what switches there are (switches, n_switches).
6273 Make a table of specified input files (infiles, n_infiles).
6274 Decode switches that are handled locally. */
6275
6276 process_command (argc, (const char **) argv);
6277
6278 /* Initialize the vector of specs to just the default.
6279 This means one element containing 0s, as a terminator. */
6280
6281 compilers = xmalloc (sizeof default_compilers);
6282 memcpy (compilers, default_compilers, sizeof default_compilers);
6283 n_compilers = n_default_compilers;
6284
6285 /* Read specs from a file if there is one. */
6286
6287#ifdef FREEBSD_NATIVE
6288 machine_suffix = "";
6289 just_machine_suffix = "";
6290#else /* FREEBSD_NATIVE */
6291 machine_suffix = concat (spec_machine, dir_separator_str,
6292 spec_version, dir_separator_str, NULL);
6293 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6294#endif /* FREEBSD_NATIVE */
6295
6296 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true);
6297 /* Read the specs file unless it is a default one. */
6298 if (specs_file != 0 && strcmp (specs_file, "specs"))
6299 read_specs (specs_file, TRUE);
6300 else
6301 init_spec ();
6302
6303 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6304 for any override of as, ld and libraries. */
6305 specs_file = (char *) alloca (strlen (FBSD_DATA_PREFIX)
6306 + strlen (just_machine_suffix)
6307 + sizeof ("specs"));
6308
6309 strcpy (specs_file, FBSD_DATA_PREFIX);
6310 strcat (specs_file, just_machine_suffix);
6311 strcat (specs_file, "specs");
6312 if (access (specs_file, R_OK) == 0)
6313 read_specs (specs_file, TRUE);
6314
6315 /* Process any configure-time defaults specified for the command line
6316 options, via OPTION_DEFAULT_SPECS. */
6317 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6318 do_option_spec (option_default_specs[i].name,
6319 option_default_specs[i].spec);
6320
6321 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6322 of the command line. */
6323
6324 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6325 do_self_spec (driver_self_specs[i]);
6326
6327 /* If not cross-compiling, look for executables in the standard
6328 places. */
6329 if (*cross_compile == '0')
6330 {
6331 if (*md_exec_prefix)
6332 {
6333 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6334 PREFIX_PRIORITY_LAST, 0, 0);
6335 }
6336 }
6337
6338 /* Process sysroot_suffix_spec. */
6339 if (*sysroot_suffix_spec != 0
6340 && do_spec_2 (sysroot_suffix_spec) == 0)
6341 {
6342 if (argbuf_index > 1)
6343 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6344 else if (argbuf_index == 1)
6345 target_sysroot_suffix = xstrdup (argbuf[argbuf_index -1]);
6346 }
6347
6348#ifdef HAVE_LD_SYSROOT
6349 /* Pass the --sysroot option to the linker, if it supports that. If
6350 there is a sysroot_suffix_spec, it has already been processed by
6351 this point, so target_system_root really is the system root we
6352 should be using. */
6353 if (target_system_root)
6354 {
6355 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6356 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
6357 set_spec ("link", XOBFINISH (&obstack, const char *));
6358 }
6359#endif
6360
6361 /* Process sysroot_hdrs_suffix_spec. */
6362 if (*sysroot_hdrs_suffix_spec != 0
6363 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6364 {
6365 if (argbuf_index > 1)
6366 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6367 else if (argbuf_index == 1)
6368 target_sysroot_hdrs_suffix = xstrdup (argbuf[argbuf_index -1]);
6369 }
6370
6371 /* Look for startfiles in the standard places. */
6372 if (*startfile_prefix_spec != 0
6373 && do_spec_2 (startfile_prefix_spec) == 0
6374 && do_spec_1 (" ", 0, NULL) == 0)
6375 {
6376 int ndx;
6377 for (ndx = 0; ndx < argbuf_index; ndx++)
6378 add_sysrooted_prefix (&startfile_prefixes, argbuf[ndx], "BINUTILS",
6379 PREFIX_PRIORITY_LAST, 0, 1);
6380 }
6381 /* We should eventually get rid of all these and stick to
6382 startfile_prefix_spec exclusively. */
6383 else if (*cross_compile == '0' || target_system_root)
6384 {
6385 if (*md_startfile_prefix)
6386 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6387 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6388
6389 if (*md_startfile_prefix_1)
6390 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6391 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6392
6393 /* If standard_startfile_prefix is relative, base it on
6394 standard_exec_prefix. This lets us move the installed tree
6395 as a unit. If GCC_EXEC_PREFIX is defined, base
6396 standard_startfile_prefix on that as well.
6397
6398 If the prefix is relative, only search it for native compilers;
6399 otherwise we will search a directory containing host libraries. */
6400 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
6401 add_sysrooted_prefix (&startfile_prefixes,
6402 standard_startfile_prefix, "BINUTILS",
6403 PREFIX_PRIORITY_LAST, 0, 1);
6404 else if (*cross_compile == '0')
6405 {
6406 if (gcc_exec_prefix)
6407 add_prefix (&startfile_prefixes,
6408 concat (gcc_exec_prefix, machine_suffix,
6409 standard_startfile_prefix, NULL),
6410 NULL, PREFIX_PRIORITY_LAST, 0, 1);
6411 add_prefix (&startfile_prefixes,
6412 concat (standard_exec_prefix,
6413 machine_suffix,
6414 standard_startfile_prefix, NULL),
6415 NULL, PREFIX_PRIORITY_LAST, 0, 1);
6416 }
6417
6418#ifndef FREEBSD_NATIVE
6419 if (*standard_startfile_prefix_1)
6420 add_sysrooted_prefix (&startfile_prefixes,
6421 standard_startfile_prefix_1, "BINUTILS",
6422 PREFIX_PRIORITY_LAST, 0, 1);
6423 if (*standard_startfile_prefix_2)
6424 add_sysrooted_prefix (&startfile_prefixes,
6425 standard_startfile_prefix_2, "BINUTILS",
6426 PREFIX_PRIORITY_LAST, 0, 1);
6427#endif
6428 }
6429
6430 /* Process any user specified specs in the order given on the command
6431 line. */
6432 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6433 {
6434 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6435 R_OK, true);
6436 read_specs (filename ? filename : uptr->filename, FALSE);
6437 }
6438
6439 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6440 if (gcc_exec_prefix)
6441 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6442 spec_version, dir_separator_str, NULL);
6443
6444 /* Now we have the specs.
6445 Set the `valid' bits for switches that match anything in any spec. */
6446
6447 validate_all_switches ();
6448
6449 /* Now that we have the switches and the specs, set
6450 the subdirectory based on the options. */
6451 set_multilib_dir ();
6452
6453 /* Warn about any switches that no pass was interested in. */
6454
6455 for (i = 0; (int) i < n_switches; i++)
6456 if (! switches[i].validated)
6457 error ("unrecognized option '-%s'", switches[i].part1);
6458
6459 /* Obey some of the options. */
6460
6461 if (print_search_dirs)
6462 {
6463#ifndef FREEBSD_NATIVE
6464 printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix);
6465#else
6466 printf (_("install: %s\n"), standard_exec_prefix);
6467#endif
6468 printf (_("programs: %s\n"),
6469 build_search_list (&exec_prefixes, "", false, false));
6470 printf (_("libraries: %s\n"),
6471 build_search_list (&startfile_prefixes, "", false, true));
6472 return (0);
6473 }
6474
6475 if (print_file_name)
6476 {
6477 printf ("%s\n", find_file (print_file_name));
6478 return (0);
6479 }
6480
6481 if (print_prog_name)
6482 {
6483 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6484 printf ("%s\n", (newname ? newname : print_prog_name));
6485 return (0);
6486 }
6487
6488 if (print_multi_lib)
6489 {
6490 print_multilib_info ();
6491 return (0);
6492 }
6493
6494 if (print_multi_directory)
6495 {
6496 if (multilib_dir == NULL)
6497 printf (".\n");
6498 else
6499 printf ("%s\n", multilib_dir);
6500 return (0);
6501 }
6502
6503 if (print_multi_os_directory)
6504 {
6505 if (multilib_os_dir == NULL)
6506 printf (".\n");
6507 else
6508 printf ("%s\n", multilib_os_dir);
6509 return (0);
6510 }
6511
6512 if (target_help_flag)
6513 {
6514 /* Print if any target specific options. */
6515
6516 /* We do not exit here. Instead we have created a fake input file
6517 called 'target-dummy' which needs to be compiled, and we pass this
6518 on to the various sub-processes, along with the --target-help
6519 switch. */
6520 }
6521
6522 if (print_help_list)
6523 {
6524 display_help ();
6525
6526 if (! verbose_flag)
6527 {
6528 printf (_("\nFor bug reporting instructions, please see:\n"));
6529 printf ("%s.\n", bug_report_url);
6530
6531 return (0);
6532 }
6533
6534 /* We do not exit here. Instead we have created a fake input file
6535 called 'help-dummy' which needs to be compiled, and we pass this
6536 on the various sub-processes, along with the --help switch. */
6537 }
6538
6539 if (verbose_flag)
6540 {
6541 int n;
6542 const char *thrmod;
6543
6544 notice ("Target: %s\n", spec_machine);
6545 notice ("Configured with: %s\n", configuration_arguments);
6546
6547#ifdef THREAD_MODEL_SPEC
6548 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6549 but there's no point in doing all this processing just to get
6550 thread_model back. */
6551 obstack_init (&obstack);
6552 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6553 obstack_1grow (&obstack, '\0');
6554 thrmod = XOBFINISH (&obstack, const char *);
6555#else
6556 thrmod = thread_model;
6557#endif
6558
6559 notice ("Thread model: %s\n", thrmod);
6560
6561 /* compiler_version is truncated at the first space when initialized
6562 from version string, so truncate version_string at the first space
6563 before comparing. */
6564 for (n = 0; version_string[n]; n++)
6565 if (version_string[n] == ' ')
6566 break;
6567
6568 if (! strncmp (version_string, compiler_version, n)
6569 && compiler_version[n] == 0)
6570 notice ("gcc version %s\n", version_string);
6571 else
6572 notice ("gcc driver version %s executing gcc version %s\n",
6573 version_string, compiler_version);
6574
6575 if (n_infiles == 0)
6576 return (0);
6577 }
6578
6579 if (n_infiles == added_libraries)
6580 fatal ("No input files specified");
6581
6582 /* Make a place to record the compiler output file names
6583 that correspond to the input files. */
6584
6585 i = n_infiles;
6586 i += lang_specific_extra_outfiles;
6587 outfiles = XCNEWVEC (const char *, i);
6588
6589 /* Record which files were specified explicitly as link input. */
6590
6591 explicit_link_files = XCNEWVEC (char, n_infiles);
6592
6593 if (combine_flag)
6594 combine_inputs = true;
6595 else
6596 combine_inputs = false;
6597
6598 for (i = 0; (int) i < n_infiles; i++)
6599 {
6600 const char *name = infiles[i].name;
6601 struct compiler *compiler = lookup_compiler (name,
6602 strlen (name),
6603 infiles[i].language);
6604
6605 if (compiler && !(compiler->combinable))
6606 combine_inputs = false;
6607
6608 if (lang_n_infiles > 0 && compiler != input_file_compiler
6609 && infiles[i].language && infiles[i].language[0] != '*')
6610 infiles[i].incompiler = compiler;
6611 else if (compiler)
6612 {
6613 lang_n_infiles++;
6614 input_file_compiler = compiler;
6615 infiles[i].incompiler = compiler;
6616 }
6617 else
6618 {
6619 /* Since there is no compiler for this input file, assume it is a
6620 linker file. */
6621 explicit_link_files[i] = 1;
6622 infiles[i].incompiler = NULL;
6623 }
6624 infiles[i].compiled = false;
6625 infiles[i].preprocessed = false;
6626 }
6627
6628 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1)
6629 fatal ("cannot specify -o with -c or -S with multiple files");
6630
6631 if (combine_flag && save_temps_flag)
6632 {
6633 bool save_combine_inputs = combine_inputs;
6634 /* Must do a separate pre-processing pass for C & Objective-C files, to
6635 obtain individual .i files. */
6636
6637 combine_inputs = false;
6638 for (i = 0; (int) i < n_infiles; i++)
6639 {
6640 int this_file_error = 0;
6641
6642 input_file_number = i;
6643 set_input (infiles[i].name);
6644 if (infiles[i].incompiler
6645 && (infiles[i].incompiler)->needs_preprocessing)
6646 input_file_compiler = infiles[i].incompiler;
6647 else
6648 continue;
6649
6650 if (input_file_compiler)
6651 {
6652 if (input_file_compiler->spec[0] == '#')
6653 {
6654 error ("%s: %s compiler not installed on this system",
6655 input_filename, &input_file_compiler->spec[1]);
6656 this_file_error = 1;
6657 }
6658 else
6659 {
6660 value = do_spec (input_file_compiler->spec);
6661 infiles[i].preprocessed = true;
6662 if (!have_o_argbuf_index)
6663 fatal ("spec '%s' is invalid", input_file_compiler->spec);
6664 infiles[i].name = argbuf[have_o_argbuf_index];
6665 infiles[i].incompiler
6666 = lookup_compiler (infiles[i].name,
6667 strlen (infiles[i].name),
6668 infiles[i].language);
6669
6670 if (value < 0)
6671 this_file_error = 1;
6672 }
6673 }
6674
6675 if (this_file_error)
6676 {
6677 delete_failure_queue ();
6678 error_count++;
6679 break;
6680 }
6681 clear_failure_queue ();
6682 }
6683 combine_inputs = save_combine_inputs;
6684 }
6685
6686 for (i = 0; (int) i < n_infiles; i++)
6687 {
6688 int this_file_error = 0;
6689
6690 /* Tell do_spec what to substitute for %i. */
6691
6692 input_file_number = i;
6693 set_input (infiles[i].name);
6694
6695 if (infiles[i].compiled)
6696 continue;
6697
6698 /* Use the same thing in %o, unless cp->spec says otherwise. */
6699
6700 outfiles[i] = input_filename;
6701
6702 /* Figure out which compiler from the file's suffix. */
6703
6704 if (! combine_inputs)
6705 input_file_compiler
6706 = lookup_compiler (infiles[i].name, input_filename_length,
6707 infiles[i].language);
6708 else
6709 input_file_compiler = infiles[i].incompiler;
6710
6711 if (input_file_compiler)
6712 {
6713 /* Ok, we found an applicable compiler. Run its spec. */
6714
6715 if (input_file_compiler->spec[0] == '#')
6716 {
6717 error ("%s: %s compiler not installed on this system",
6718 input_filename, &input_file_compiler->spec[1]);
6719 this_file_error = 1;
6720 }
6721 else
6722 {
6723 value = do_spec (input_file_compiler->spec);
6724 infiles[i].compiled = true;
6725 if (value < 0)
6726 this_file_error = 1;
6727 }
6728 }
6729
6730 /* If this file's name does not contain a recognized suffix,
6731 record it as explicit linker input. */
6732
6733 else
6734 explicit_link_files[i] = 1;
6735
6736 /* Clear the delete-on-failure queue, deleting the files in it
6737 if this compilation failed. */
6738
6739 if (this_file_error)
6740 {
6741 delete_failure_queue ();
6742 error_count++;
6743 }
6744 /* If this compilation succeeded, don't delete those files later. */
6745 clear_failure_queue ();
6746 }
6747
6748 /* Reset the input file name to the first compile/object file name, for use
6749 with %b in LINK_SPEC. We use the first input file that we can find
6750 a compiler to compile it instead of using infiles.language since for
6751 languages other than C we use aliases that we then lookup later. */
6752 if (n_infiles > 0)
6753 {
6754 int i;
6755
6756 for (i = 0; i < n_infiles ; i++)
6757 if (infiles[i].language && infiles[i].language[0] != '*')
6758 {
6759 set_input (infiles[i].name);
6760 break;
6761 }
6762 }
6763
6764 if (error_count == 0)
6765 {
6766 /* Make sure INPUT_FILE_NUMBER points to first available open
6767 slot. */
6768 input_file_number = n_infiles;
6769 if (lang_specific_pre_link ())
6770 error_count++;
6771 }
6772
6773 /* Determine if there are any linker input files. */
6774 num_linker_inputs = 0;
6775 for (i = 0; (int) i < n_infiles; i++)
6776 if (explicit_link_files[i] || outfiles[i] != NULL)
6777 num_linker_inputs++;
6778
6779 /* Run ld to link all the compiler output files. */
6780
6781 if (num_linker_inputs > 0 && error_count == 0)
6782 {
6783 int tmp = execution_count;
6784
6785 /* We'll use ld if we can't find collect2. */
6786 if (! strcmp (linker_name_spec, "collect2"))
6787 {
6788 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false);
6789 if (s == NULL)
6790 linker_name_spec = "ld";
6791 }
6792 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6793 for collect. */
6794 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false);
6795 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true);
6796
6797 value = do_spec (link_command_spec);
6798 if (value < 0)
6799 error_count = 1;
6800 linker_was_run = (tmp != execution_count);
6801 }
6802
6803 /* If options said don't run linker,
6804 complain about input files to be given to the linker. */
6805
6806 if (! linker_was_run && error_count == 0)
6807 for (i = 0; (int) i < n_infiles; i++)
6808 if (explicit_link_files[i])
6809 error ("%s: linker input file unused because linking not done",
6810 outfiles[i]);
6811
6812 /* Delete some or all of the temporary files we made. */
6813
6814 if (error_count)
6815 delete_failure_queue ();
6816 delete_temp_files ();
6817
6818 if (print_help_list)
6819 {
6820 printf (("\nFor bug reporting instructions, please see:\n"));
6821 printf ("%s\n", bug_report_url);
6822 }
6823
6824 return (signal_count != 0 ? 2
6825 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
6826 : 0);
6827}
6828
6829/* Find the proper compilation spec for the file name NAME,
6830 whose length is LENGTH. LANGUAGE is the specified language,
6831 or 0 if this file is to be passed to the linker. */
6832
6833static struct compiler *
6834lookup_compiler (const char *name, size_t length, const char *language)
6835{
6836 struct compiler *cp;
6837
6838 /* If this was specified by the user to be a linker input, indicate that. */
6839 if (language != 0 && language[0] == '*')
6840 return 0;
6841
6842 /* Otherwise, look for the language, if one is spec'd. */
6843 if (language != 0)
6844 {
6845 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6846 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6847 return cp;
6848
6849 error ("language %s not recognized", language);
6850 return 0;
6851 }
6852
6853 /* Look for a suffix. */
6854 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6855 {
6856 if (/* The suffix `-' matches only the file name `-'. */
6857 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6858 || (strlen (cp->suffix) < length
6859 /* See if the suffix matches the end of NAME. */
6860 && !strcmp (cp->suffix,
6861 name + length - strlen (cp->suffix))
6862 ))
6863 break;
6864 }
6865
6866#if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6867 /* Look again, but case-insensitively this time. */
6868 if (cp < compilers)
6869 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6870 {
6871 if (/* The suffix `-' matches only the file name `-'. */
6872 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6873 || (strlen (cp->suffix) < length
6874 /* See if the suffix matches the end of NAME. */
6875 && ((!strcmp (cp->suffix,
6876 name + length - strlen (cp->suffix))
6877 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6878 && !strcasecmp (cp->suffix,
6879 name + length - strlen (cp->suffix)))
6880 ))
6881 break;
6882 }
6883#endif
6884
6885 if (cp >= compilers)
6886 {
6887 if (cp->spec[0] != '@')
6888 /* A non-alias entry: return it. */
6889 return cp;
6890
6891 /* An alias entry maps a suffix to a language.
6892 Search for the language; pass 0 for NAME and LENGTH
6893 to avoid infinite recursion if language not found. */
6894 return lookup_compiler (NULL, 0, cp->spec + 1);
6895 }
6896 return 0;
6897}
6898
6899static char *
6900save_string (const char *s, int len)
6901{
6902 char *result = XNEWVEC (char, len + 1);
6903
6904 memcpy (result, s, len);
6905 result[len] = 0;
6906 return result;
6907}
6908
6909void
6910pfatal_with_name (const char *name)
6911{
6912 perror_with_name (name);
6913 delete_temp_files ();
6914 exit (1);
6915}
6916
6917static void
6918perror_with_name (const char *name)
6919{
6920 error ("%s: %s", name, xstrerror (errno));
6921}
6922
6923/* Output an error message and exit. */
6924
6925void
6926fancy_abort (const char *file, int line, const char *func)
6927{
6928 fatal_ice ("internal gcc abort in %s, at %s:%d", func, file, line);
6929}
6930
6931/* Output an error message and exit. */
6932
6933void
6934fatal_ice (const char *cmsgid, ...)
6935{
6936 va_list ap;
6937
6938 va_start (ap, cmsgid);
6939
6940 fprintf (stderr, "%s: ", programname);
6941 vfprintf (stderr, _(cmsgid), ap);
6942 va_end (ap);
6943 fprintf (stderr, "\n");
6944 delete_temp_files ();
6945 exit (pass_exit_codes ? ICE_EXIT_CODE : 1);
6946}
6947
6948void
6949fatal (const char *cmsgid, ...)
6950{
6951 va_list ap;
6952
6953 va_start (ap, cmsgid);
6954
6955 fprintf (stderr, "%s: ", programname);
6956 vfprintf (stderr, _(cmsgid), ap);
6957 va_end (ap);
6958 fprintf (stderr, "\n");
6959 delete_temp_files ();
6960 exit (1);
6961}
6962
6963/* The argument is actually c-format, not gcc-internal-format,
6964 but because functions with identical names are used through
6965 the rest of the compiler with gcc-internal-format, we just
6966 need to hope all users of these functions use the common
6967 subset between c-format and gcc-internal-format. */
6968
6969void
6970error (const char *gmsgid, ...)
6971{
6972 va_list ap;
6973
6974 va_start (ap, gmsgid);
6975 fprintf (stderr, "%s: ", programname);
6976 vfprintf (stderr, _(gmsgid), ap);
6977 va_end (ap);
6978
6979 fprintf (stderr, "\n");
6980}
6981
6982static void
6983notice (const char *cmsgid, ...)
6984{
6985 va_list ap;
6986
6987 va_start (ap, cmsgid);
6988 vfprintf (stderr, _(cmsgid), ap);
6989 va_end (ap);
6990}
6991
6992static inline void
6993validate_switches_from_spec (const char *spec)
6994{
6995 const char *p = spec;
6996 char c;
6997 while ((c = *p++))
6998 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
6999 /* We have a switch spec. */
7000 p = validate_switches (p + 1);
7001}
7002
7003static void
7004validate_all_switches (void)
7005{
7006 struct compiler *comp;
7007 struct spec_list *spec;
7008
7009 for (comp = compilers; comp->spec; comp++)
7010 validate_switches_from_spec (comp->spec);
7011
7012 /* Look through the linked list of specs read from the specs file. */
7013 for (spec = specs; spec; spec = spec->next)
7014 validate_switches_from_spec (*spec->ptr_spec);
7015
7016 validate_switches_from_spec (link_command_spec);
7017}
7018
7019/* Look at the switch-name that comes after START
7020 and mark as valid all supplied switches that match it. */
7021
7022static const char *
7023validate_switches (const char *start)
7024{
7025 const char *p = start;
7026 const char *atom;
7027 size_t len;
7028 int i;
7029 bool suffix = false;
7030 bool starred = false;
7031
7032#define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7033
7034next_member:
7035 SKIP_WHITE ();
7036
7037 if (*p == '!')
7038 p++;
7039
7040 SKIP_WHITE ();
7041 if (*p == '.')
7042 suffix = true, p++;
7043
7044 atom = p;
7045 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
7046 || *p == ',' || *p == '.' || *p == '@')
7047 p++;
7048 len = p - atom;
7049
7050 if (*p == '*')
7051 starred = true, p++;
7052
7053 SKIP_WHITE ();
7054
7055 if (!suffix)
7056 {
7057 /* Mark all matching switches as valid. */
7058 for (i = 0; i < n_switches; i++)
7059 if (!strncmp (switches[i].part1, atom, len)
7060 && (starred || switches[i].part1[len] == 0))
7061 switches[i].validated = 1;
7062 }
7063
7064 if (*p) p++;
7065 if (*p && (p[-1] == '|' || p[-1] == '&'))
7066 goto next_member;
7067
7068 if (*p && p[-1] == ':')
7069 {
7070 while (*p && *p != ';' && *p != '}')
7071 {
7072 if (*p == '%')
7073 {
7074 p++;
7075 if (*p == '{' || *p == '<')
7076 p = validate_switches (p+1);
7077 else if (p[0] == 'W' && p[1] == '{')
7078 p = validate_switches (p+2);
7079 }
7080 else
7081 p++;
7082 }
7083
7084 if (*p) p++;
7085 if (*p && p[-1] == ';')
7086 goto next_member;
7087 }
7088
7089 return p;
7090#undef SKIP_WHITE
7091}
7092
7093struct mdswitchstr
7094{
7095 const char *str;
7096 int len;
7097};
7098
7099static struct mdswitchstr *mdswitches;
7100static int n_mdswitches;
7101
7102/* Check whether a particular argument was used. The first time we
7103 canonicalize the switches to keep only the ones we care about. */
7104
7105static int
7106used_arg (const char *p, int len)
7107{
7108 struct mswitchstr
7109 {
7110 const char *str;
7111 const char *replace;
7112 int len;
7113 int rep_len;
7114 };
7115
7116 static struct mswitchstr *mswitches;
7117 static int n_mswitches;
7118 int i, j;
7119
7120 if (!mswitches)
7121 {
7122 struct mswitchstr *matches;
7123 const char *q;
7124 int cnt = 0;
7125
7126 /* Break multilib_matches into the component strings of string
7127 and replacement string. */
7128 for (q = multilib_matches; *q != '\0'; q++)
7129 if (*q == ';')
7130 cnt++;
7131
7132 matches = alloca ((sizeof (struct mswitchstr)) * cnt);
7133 i = 0;
7134 q = multilib_matches;
7135 while (*q != '\0')
7136 {
7137 matches[i].str = q;
7138 while (*q != ' ')
7139 {
7140 if (*q == '\0')
7141 {
7142 invalid_matches:
7143 fatal ("multilib spec '%s' is invalid", multilib_matches);
7144 }
7145 q++;
7146 }
7147 matches[i].len = q - matches[i].str;
7148
7149 matches[i].replace = ++q;
7150 while (*q != ';' && *q != '\0')
7151 {
7152 if (*q == ' ')
7153 goto invalid_matches;
7154 q++;
7155 }
7156 matches[i].rep_len = q - matches[i].replace;
7157 i++;
7158 if (*q == ';')
7159 q++;
7160 }
7161
7162 /* Now build a list of the replacement string for switches that we care
7163 about. Make sure we allocate at least one entry. This prevents
7164 xmalloc from calling fatal, and prevents us from re-executing this
7165 block of code. */
7166 mswitches
7167 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1));
7168 for (i = 0; i < n_switches; i++)
7169 if (switches[i].live_cond != SWITCH_IGNORE)
7170 {
7171 int xlen = strlen (switches[i].part1);
7172 for (j = 0; j < cnt; j++)
7173 if (xlen == matches[j].len
7174 && ! strncmp (switches[i].part1, matches[j].str, xlen))
7175 {
7176 mswitches[n_mswitches].str = matches[j].replace;
7177 mswitches[n_mswitches].len = matches[j].rep_len;
7178 mswitches[n_mswitches].replace = (char *) 0;
7179 mswitches[n_mswitches].rep_len = 0;
7180 n_mswitches++;
7181 break;
7182 }
7183 }
7184
7185 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7186 on the command line nor any options mutually incompatible with
7187 them. */
7188 for (i = 0; i < n_mdswitches; i++)
7189 {
7190 const char *r;
7191
7192 for (q = multilib_options; *q != '\0'; q++)
7193 {
7194 while (*q == ' ')
7195 q++;
7196
7197 r = q;
7198 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
7199 || strchr (" /", q[mdswitches[i].len]) == NULL)
7200 {
7201 while (*q != ' ' && *q != '/' && *q != '\0')
7202 q++;
7203 if (*q != '/')
7204 break;
7205 q++;
7206 }
7207
7208 if (*q != ' ' && *q != '\0')
7209 {
7210 while (*r != ' ' && *r != '\0')
7211 {
7212 q = r;
7213 while (*q != ' ' && *q != '/' && *q != '\0')
7214 q++;
7215
7216 if (used_arg (r, q - r))
7217 break;
7218
7219 if (*q != '/')
7220 {
7221 mswitches[n_mswitches].str = mdswitches[i].str;
7222 mswitches[n_mswitches].len = mdswitches[i].len;
7223 mswitches[n_mswitches].replace = (char *) 0;
7224 mswitches[n_mswitches].rep_len = 0;
7225 n_mswitches++;
7226 break;
7227 }
7228
7229 r = q + 1;
7230 }
7231 break;
7232 }
7233 }
7234 }
7235 }
7236
7237 for (i = 0; i < n_mswitches; i++)
7238 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
7239 return 1;
7240
7241 return 0;
7242}
7243
7244static int
7245default_arg (const char *p, int len)
7246{
7247 int i;
7248
7249 for (i = 0; i < n_mdswitches; i++)
7250 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
7251 return 1;
7252
7253 return 0;
7254}
7255
7256/* Work out the subdirectory to use based on the options. The format of
7257 multilib_select is a list of elements. Each element is a subdirectory
7258 name followed by a list of options followed by a semicolon. The format
7259 of multilib_exclusions is the same, but without the preceding
7260 directory. First gcc will check the exclusions, if none of the options
7261 beginning with an exclamation point are present, and all of the other
7262 options are present, then we will ignore this completely. Passing
7263 that, gcc will consider each multilib_select in turn using the same
7264 rules for matching the options. If a match is found, that subdirectory
7265 will be used. */
7266
7267static void
7268set_multilib_dir (void)
7269{
7270 const char *p;
7271 unsigned int this_path_len;
7272 const char *this_path, *this_arg;
7273 const char *start, *end;
7274 int not_arg;
7275 int ok, ndfltok, first;
7276
7277 n_mdswitches = 0;
7278 start = multilib_defaults;
7279 while (*start == ' ' || *start == '\t')
7280 start++;
7281 while (*start != '\0')
7282 {
7283 n_mdswitches++;
7284 while (*start != ' ' && *start != '\t' && *start != '\0')
7285 start++;
7286 while (*start == ' ' || *start == '\t')
7287 start++;
7288 }
7289
7290 if (n_mdswitches)
7291 {
7292 int i = 0;
7293
7294 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches);
7295 for (start = multilib_defaults; *start != '\0'; start = end + 1)
7296 {
7297 while (*start == ' ' || *start == '\t')
7298 start++;
7299
7300 if (*start == '\0')
7301 break;
7302
7303 for (end = start + 1;
7304 *end != ' ' && *end != '\t' && *end != '\0'; end++)
7305 ;
7306
7307 obstack_grow (&multilib_obstack, start, end - start);
7308 obstack_1grow (&multilib_obstack, 0);
7309 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *);
7310 mdswitches[i++].len = end - start;
7311
7312 if (*end == '\0')
7313 break;
7314 }
7315 }
7316
7317 p = multilib_exclusions;
7318 while (*p != '\0')
7319 {
7320 /* Ignore newlines. */
7321 if (*p == '\n')
7322 {
7323 ++p;
7324 continue;
7325 }
7326
7327 /* Check the arguments. */
7328 ok = 1;
7329 while (*p != ';')
7330 {
7331 if (*p == '\0')
7332 {
7333 invalid_exclusions:
7334 fatal ("multilib exclusions '%s' is invalid",
7335 multilib_exclusions);
7336 }
7337
7338 if (! ok)
7339 {
7340 ++p;
7341 continue;
7342 }
7343
7344 this_arg = p;
7345 while (*p != ' ' && *p != ';')
7346 {
7347 if (*p == '\0')
7348 goto invalid_exclusions;
7349 ++p;
7350 }
7351
7352 if (*this_arg != '!')
7353 not_arg = 0;
7354 else
7355 {
7356 not_arg = 1;
7357 ++this_arg;
7358 }
7359
7360 ok = used_arg (this_arg, p - this_arg);
7361 if (not_arg)
7362 ok = ! ok;
7363
7364 if (*p == ' ')
7365 ++p;
7366 }
7367
7368 if (ok)
7369 return;
7370
7371 ++p;
7372 }
7373
7374 first = 1;
7375 p = multilib_select;
7376 while (*p != '\0')
7377 {
7378 /* Ignore newlines. */
7379 if (*p == '\n')
7380 {
7381 ++p;
7382 continue;
7383 }
7384
7385 /* Get the initial path. */
7386 this_path = p;
7387 while (*p != ' ')
7388 {
7389 if (*p == '\0')
7390 {
7391 invalid_select:
7392 fatal ("multilib select '%s' is invalid",
7393 multilib_select);
7394 }
7395 ++p;
7396 }
7397 this_path_len = p - this_path;
7398
7399 /* Check the arguments. */
7400 ok = 1;
7401 ndfltok = 1;
7402 ++p;
7403 while (*p != ';')
7404 {
7405 if (*p == '\0')
7406 goto invalid_select;
7407
7408 if (! ok)
7409 {
7410 ++p;
7411 continue;
7412 }
7413
7414 this_arg = p;
7415 while (*p != ' ' && *p != ';')
7416 {
7417 if (*p == '\0')
7418 goto invalid_select;
7419 ++p;
7420 }
7421
7422 if (*this_arg != '!')
7423 not_arg = 0;
7424 else
7425 {
7426 not_arg = 1;
7427 ++this_arg;
7428 }
7429
7430 /* If this is a default argument, we can just ignore it.
7431 This is true even if this_arg begins with '!'. Beginning
7432 with '!' does not mean that this argument is necessarily
7433 inappropriate for this library: it merely means that
7434 there is a more specific library which uses this
7435 argument. If this argument is a default, we need not
7436 consider that more specific library. */
7437 ok = used_arg (this_arg, p - this_arg);
7438 if (not_arg)
7439 ok = ! ok;
7440
7441 if (! ok)
7442 ndfltok = 0;
7443
7444 if (default_arg (this_arg, p - this_arg))
7445 ok = 1;
7446
7447 if (*p == ' ')
7448 ++p;
7449 }
7450
7451 if (ok && first)
7452 {
7453 if (this_path_len != 1
7454 || this_path[0] != '.')
7455 {
7456 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1);
7457 char *q;
7458
7459 strncpy (new_multilib_dir, this_path, this_path_len);
7460 new_multilib_dir[this_path_len] = '\0';
7461 q = strchr (new_multilib_dir, ':');
7462 if (q != NULL)
7463 *q = '\0';
7464 multilib_dir = new_multilib_dir;
7465 }
7466 first = 0;
7467 }
7468
7469 if (ndfltok)
7470 {
7471 const char *q = this_path, *end = this_path + this_path_len;
7472
7473 while (q < end && *q != ':')
7474 q++;
7475 if (q < end)
7476 {
7477 char *new_multilib_os_dir = XNEWVEC (char, end - q);
7478 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
7479 new_multilib_os_dir[end - q - 1] = '\0';
7480 multilib_os_dir = new_multilib_os_dir;
7481 break;
7482 }
7483 }
7484
7485 ++p;
7486 }
7487
7488 if (multilib_dir == NULL && multilib_os_dir != NULL
7489 && strcmp (multilib_os_dir, ".") == 0)
7490 {
7491 free ((char *) multilib_os_dir);
7492 multilib_os_dir = NULL;
7493 }
7494 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7495 multilib_os_dir = multilib_dir;
7496}
7497
7498/* Print out the multiple library subdirectory selection
7499 information. This prints out a series of lines. Each line looks
7500 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7501 required. Only the desired options are printed out, the negative
7502 matches. The options are print without a leading dash. There are
7503 no spaces to make it easy to use the information in the shell.
7504 Each subdirectory is printed only once. This assumes the ordering
7505 generated by the genmultilib script. Also, we leave out ones that match
7506 the exclusions. */
7507
7508static void
7509print_multilib_info (void)
7510{
7511 const char *p = multilib_select;
7512 const char *last_path = 0, *this_path;
7513 int skip;
7514 unsigned int last_path_len = 0;
7515
7516 while (*p != '\0')
7517 {
7518 skip = 0;
7519 /* Ignore newlines. */
7520 if (*p == '\n')
7521 {
7522 ++p;
7523 continue;
7524 }
7525
7526 /* Get the initial path. */
7527 this_path = p;
7528 while (*p != ' ')
7529 {
7530 if (*p == '\0')
7531 {
7532 invalid_select:
7533 fatal ("multilib select '%s' is invalid", multilib_select);
7534 }
7535
7536 ++p;
7537 }
7538
7539 /* When --disable-multilib was used but target defines
7540 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7541 to find multilib_os_dir, so skip them from output. */
7542 if (this_path[0] == '.' && this_path[1] == ':')
7543 skip = 1;
7544
7545 /* Check for matches with the multilib_exclusions. We don't bother
7546 with the '!' in either list. If any of the exclusion rules match
7547 all of its options with the select rule, we skip it. */
7548 {
7549 const char *e = multilib_exclusions;
7550 const char *this_arg;
7551
7552 while (*e != '\0')
7553 {
7554 int m = 1;
7555 /* Ignore newlines. */
7556 if (*e == '\n')
7557 {
7558 ++e;
7559 continue;
7560 }
7561
7562 /* Check the arguments. */
7563 while (*e != ';')
7564 {
7565 const char *q;
7566 int mp = 0;
7567
7568 if (*e == '\0')
7569 {
7570 invalid_exclusion:
7571 fatal ("multilib exclusion '%s' is invalid",
7572 multilib_exclusions);
7573 }
7574
7575 if (! m)
7576 {
7577 ++e;
7578 continue;
7579 }
7580
7581 this_arg = e;
7582
7583 while (*e != ' ' && *e != ';')
7584 {
7585 if (*e == '\0')
7586 goto invalid_exclusion;
7587 ++e;
7588 }
7589
7590 q = p + 1;
7591 while (*q != ';')
7592 {
7593 const char *arg;
7594 int len = e - this_arg;
7595
7596 if (*q == '\0')
7597 goto invalid_select;
7598
7599 arg = q;
7600
7601 while (*q != ' ' && *q != ';')
7602 {
7603 if (*q == '\0')
7604 goto invalid_select;
7605 ++q;
7606 }
7607
7608 if (! strncmp (arg, this_arg,
7609 (len < q - arg) ? q - arg : len)
7610 || default_arg (this_arg, e - this_arg))
7611 {
7612 mp = 1;
7613 break;
7614 }
7615
7616 if (*q == ' ')
7617 ++q;
7618 }
7619
7620 if (! mp)
7621 m = 0;
7622
7623 if (*e == ' ')
7624 ++e;
7625 }
7626
7627 if (m)
7628 {
7629 skip = 1;
7630 break;
7631 }
7632
7633 if (*e != '\0')
7634 ++e;
7635 }
7636 }
7637
7638 if (! skip)
7639 {
7640 /* If this is a duplicate, skip it. */
7641 skip = (last_path != 0
7642 && (unsigned int) (p - this_path) == last_path_len
7643 && ! strncmp (last_path, this_path, last_path_len));
7644
7645 last_path = this_path;
7646 last_path_len = p - this_path;
7647 }
7648
7649 /* If this directory requires any default arguments, we can skip
7650 it. We will already have printed a directory identical to
7651 this one which does not require that default argument. */
7652 if (! skip)
7653 {
7654 const char *q;
7655
7656 q = p + 1;
7657 while (*q != ';')
7658 {
7659 const char *arg;
7660
7661 if (*q == '\0')
7662 goto invalid_select;
7663
7664 if (*q == '!')
7665 arg = NULL;
7666 else
7667 arg = q;
7668
7669 while (*q != ' ' && *q != ';')
7670 {
7671 if (*q == '\0')
7672 goto invalid_select;
7673 ++q;
7674 }
7675
7676 if (arg != NULL
7677 && default_arg (arg, q - arg))
7678 {
7679 skip = 1;
7680 break;
7681 }
7682
7683 if (*q == ' ')
7684 ++q;
7685 }
7686 }
7687
7688 if (! skip)
7689 {
7690 const char *p1;
7691
7692 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7693 putchar (*p1);
7694 putchar (';');
7695 }
7696
7697 ++p;
7698 while (*p != ';')
7699 {
7700 int use_arg;
7701
7702 if (*p == '\0')
7703 goto invalid_select;
7704
7705 if (skip)
7706 {
7707 ++p;
7708 continue;
7709 }
7710
7711 use_arg = *p != '!';
7712
7713 if (use_arg)
7714 putchar ('@');
7715
7716 while (*p != ' ' && *p != ';')
7717 {
7718 if (*p == '\0')
7719 goto invalid_select;
7720 if (use_arg)
7721 putchar (*p);
7722 ++p;
7723 }
7724
7725 if (*p == ' ')
7726 ++p;
7727 }
7728
7729 if (! skip)
7730 {
7731 /* If there are extra options, print them now. */
7732 if (multilib_extra && *multilib_extra)
7733 {
7734 int print_at = TRUE;
7735 const char *q;
7736
7737 for (q = multilib_extra; *q != '\0'; q++)
7738 {
7739 if (*q == ' ')
7740 print_at = TRUE;
7741 else
7742 {
7743 if (print_at)
7744 putchar ('@');
7745 putchar (*q);
7746 print_at = FALSE;
7747 }
7748 }
7749 }
7750
7751 putchar ('\n');
7752 }
7753
7754 ++p;
7755 }
7756}
7757
7758/* if-exists built-in spec function.
7759
7760 Checks to see if the file specified by the absolute pathname in
7761 ARGS exists. Returns that pathname if found.
7762
7763 The usual use for this function is to check for a library file
7764 (whose name has been expanded with %s). */
7765
7766static const char *
7767if_exists_spec_function (int argc, const char **argv)
7768{
7769 /* Must have only one argument. */
7770 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7771 return argv[0];
7772
7773 return NULL;
7774}
7775
7776/* if-exists-else built-in spec function.
7777
7778 This is like if-exists, but takes an additional argument which
7779 is returned if the first argument does not exist. */
7780
7781static const char *
7782if_exists_else_spec_function (int argc, const char **argv)
7783{
7784 /* Must have exactly two arguments. */
7785 if (argc != 2)
7786 return NULL;
7787
7788 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7789 return argv[0];
7790
7791 return argv[1];
7792}
7793
7794/* replace-outfile built-in spec function.
7795
7796 This looks for the first argument in the outfiles array's name and
7797 replaces it with the second argument. */
7798
7799static const char *
7800replace_outfile_spec_function (int argc, const char **argv)
7801{
7802 int i;
7803 /* Must have exactly two arguments. */
7804 if (argc != 2)
7805 abort ();
7806
7807 for (i = 0; i < n_infiles; i++)
7808 {
7809 if (outfiles[i] && !strcmp (outfiles[i], argv[0]))
7810 outfiles[i] = xstrdup (argv[1]);
7811 }
7812 return NULL;
7813}
7814
7815/* Given two version numbers, compares the two numbers.
7816 A version number must match the regular expression
7817 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
7818*/
7819static int
7820compare_version_strings (const char *v1, const char *v2)
7821{
7822 int rresult;
7823 regex_t r;
7824
7825 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
7826 REG_EXTENDED | REG_NOSUB) != 0)
7827 abort ();
7828 rresult = regexec (&r, v1, 0, NULL, 0);
7829 if (rresult == REG_NOMATCH)
7830 fatal ("invalid version number `%s'", v1);
7831 else if (rresult != 0)
7832 abort ();
7833 rresult = regexec (&r, v2, 0, NULL, 0);
7834 if (rresult == REG_NOMATCH)
7835 fatal ("invalid version number `%s'", v2);
7836 else if (rresult != 0)
7837 abort ();
7838
7839 return strverscmp (v1, v2);
7840}
7841
7842
7843/* version_compare built-in spec function.
7844
7845 This takes an argument of the following form:
7846
7847 <comparison-op> <arg1> [<arg2>] <switch> <result>
7848
7849 and produces "result" if the comparison evaluates to true,
7850 and nothing if it doesn't.
7851
7852 The supported <comparison-op> values are:
7853
7854 >= true if switch is a later (or same) version than arg1
7855 !> opposite of >=
7856 < true if switch is an earlier version than arg1
7857 !< opposite of <
7858 >< true if switch is arg1 or later, and earlier than arg2
7859 <> true if switch is earlier than arg1 or is arg2 or later
7860
7861 If the switch is not present, the condition is false unless
7862 the first character of the <comparison-op> is '!'.
7863
7864 For example,
7865 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
7866 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
7867
7868static const char *
7869version_compare_spec_function (int argc, const char **argv)
7870{
7871 int comp1, comp2;
7872 size_t switch_len;
7873 const char *switch_value = NULL;
7874 int nargs = 1, i;
7875 bool result;
7876
7877 if (argc < 3)
7878 fatal ("too few arguments to %%:version-compare");
7879 if (argv[0][0] == '\0')
7880 abort ();
7881 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!')
7882 nargs = 2;
7883 if (argc != nargs + 3)
7884 fatal ("too many arguments to %%:version-compare");
7885
7886 switch_len = strlen (argv[nargs + 1]);
7887 for (i = 0; i < n_switches; i++)
7888 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len)
7889 && check_live_switch (i, switch_len))
7890 switch_value = switches[i].part1 + switch_len;
7891
7892 if (switch_value == NULL)
7893 comp1 = comp2 = -1;
7894 else
7895 {
7896 comp1 = compare_version_strings (switch_value, argv[1]);
7897 if (nargs == 2)
7898 comp2 = compare_version_strings (switch_value, argv[2]);
7899 else
7900 comp2 = -1; /* This value unused. */
7901 }
7902
7903 switch (argv[0][0] << 8 | argv[0][1])
7904 {
7905 case '>' << 8 | '=':
7906 result = comp1 >= 0;
7907 break;
7908 case '!' << 8 | '<':
7909 result = comp1 >= 0 || switch_value == NULL;
7910 break;
7911 case '<' << 8:
7912 result = comp1 < 0;
7913 break;
7914 case '!' << 8 | '>':
7915 result = comp1 < 0 || switch_value == NULL;
7916 break;
7917 case '>' << 8 | '<':
7918 result = comp1 >= 0 && comp2 < 0;
7919 break;
7920 case '<' << 8 | '>':
7921 result = comp1 < 0 || comp2 >= 0;
7922 break;
7923
7924 default:
7925 fatal ("unknown operator '%s' in %%:version-compare", argv[0]);
7926 }
7927 if (! result)
7928 return NULL;
7929
7930 return argv[nargs + 2];
7931}
7932
7933/* %:include builtin spec function. This differs from %include in that it
7934 can be nested inside a spec, and thus be conditionalized. It takes
7935 one argument, the filename, and looks for it in the startfile path.
7936 The result is always NULL, i.e. an empty expansion. */
7937
7938static const char *
7939include_spec_function (int argc, const char **argv)
7940{
7941 char *file;
7942
7943 if (argc != 1)
7944 abort ();
7945
7946 file = find_a_file (&startfile_prefixes, argv[0], R_OK, 0);
7947 read_specs (file ? file : argv[0], FALSE);
7948
7949 return NULL;
7950}