gcc.c revision 170077
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: head/contrib/gcc/gcc.c 170077 2007-05-28 23:02:56Z kan $ */ 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_COMPILE 244static const char *cross_compile = "1"; 245#else 246static const char *cross_compile = "0"; 247#endif 248 249#ifdef MODIFY_TARGET_NAME 250 251/* Information on how to alter the target name based on a command-line 252 switch. The only case we support now is simply appending or deleting a 253 string to or from the end of the first part of the configuration name. */ 254 255static const struct modify_target 256{ 257 const char *const sw; 258 const enum add_del {ADD, DELETE} add_del; 259 const char *const str; 260} 261modify_target[] = MODIFY_TARGET_NAME; 262#endif 263 264/* The number of errors that have occurred; the link phase will not be 265 run if this is nonzero. */ 266static int error_count = 0; 267 268/* Greatest exit code of sub-processes that has been encountered up to 269 now. */ 270static int greatest_status = 1; 271 272/* This is the obstack which we use to allocate many strings. */ 273 274static struct obstack obstack; 275 276/* This is the obstack to build an environment variable to pass to 277 collect2 that describes all of the relevant switches of what to 278 pass the compiler in building the list of pointers to constructors 279 and destructors. */ 280 281static struct obstack collect_obstack; 282 283/* 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_COMPILE /* 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 /* Determine the filename to execute (special case for absolute paths). */ 2700 2701 if (IS_ABSOLUTE_PATH (name)) 2702 { 2703 if (access (name, mode) == 0) 2704 return xstrdup (name); 2705 2706 return NULL; 2707 } 2708 2709 info.name = name; 2710 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : ""; 2711 info.name_len = strlen (info.name); 2712 info.suffix_len = strlen (info.suffix); 2713 info.mode = mode; 2714 2715 return for_each_path (pprefix, do_multi, info.name_len + info.suffix_len, 2716 file_at_path, &info); 2717} 2718 2719/* Ranking of prefixes in the sort list. -B prefixes are put before 2720 all others. */ 2721 2722enum path_prefix_priority 2723{ 2724 PREFIX_PRIORITY_B_OPT, 2725 PREFIX_PRIORITY_LAST 2726}; 2727 2728/* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending 2729 order according to PRIORITY. Within each PRIORITY, new entries are 2730 appended. 2731 2732 If WARN is nonzero, we will warn if no file is found 2733 through this prefix. WARN should point to an int 2734 which will be set to 1 if this entry is used. 2735 2736 COMPONENT is the value to be passed to update_path. 2737 2738 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without 2739 the complete value of machine_suffix. 2740 2 means try both machine_suffix and just_machine_suffix. */ 2741 2742static void 2743add_prefix (struct path_prefix *pprefix, const char *prefix, 2744 const char *component, /* enum prefix_priority */ int priority, 2745 int require_machine_suffix, int os_multilib) 2746{ 2747 struct prefix_list *pl, **prev; 2748 int len; 2749 2750 for (prev = &pprefix->plist; 2751 (*prev) != NULL && (*prev)->priority <= priority; 2752 prev = &(*prev)->next) 2753 ; 2754 2755 /* Keep track of the longest prefix. */ 2756 2757 prefix = update_path (prefix, component); 2758 len = strlen (prefix); 2759 if (len > pprefix->max_len) 2760 pprefix->max_len = len; 2761 2762 pl = XNEW (struct prefix_list); 2763 pl->prefix = prefix; 2764 pl->require_machine_suffix = require_machine_suffix; 2765 pl->priority = priority; 2766 pl->os_multilib = os_multilib; 2767 2768 /* Insert after PREV. */ 2769 pl->next = (*prev); 2770 (*prev) = pl; 2771} 2772 2773/* Same as add_prefix, but prepending target_system_root to prefix. */ 2774static void 2775add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix, 2776 const char *component, 2777 /* enum prefix_priority */ int priority, 2778 int require_machine_suffix, int os_multilib) 2779{ 2780 if (!IS_ABSOLUTE_PATH (prefix)) 2781 fatal ("system path '%s' is not absolute", prefix); 2782 2783 if (target_system_root) 2784 { 2785 if (target_sysroot_suffix) 2786 prefix = concat (target_sysroot_suffix, prefix, NULL); 2787 prefix = concat (target_system_root, prefix, NULL); 2788 2789 /* We have to override this because GCC's notion of sysroot 2790 moves along with GCC. */ 2791 component = "GCC"; 2792 } 2793 2794 add_prefix (pprefix, prefix, component, priority, 2795 require_machine_suffix, os_multilib); 2796} 2797 2798/* Execute the command specified by the arguments on the current line of spec. 2799 When using pipes, this includes several piped-together commands 2800 with `|' between them. 2801 2802 Return 0 if successful, -1 if failed. */ 2803 2804static int 2805execute (void) 2806{ 2807 int i; 2808 int n_commands; /* # of command. */ 2809 char *string; 2810 struct pex_obj *pex; 2811 struct command 2812 { 2813 const char *prog; /* program name. */ 2814 const char **argv; /* vector of args. */ 2815 }; 2816 2817 struct command *commands; /* each command buffer with above info. */ 2818 2819 gcc_assert (!processing_spec_function); 2820 2821 /* Count # of piped commands. */ 2822 for (n_commands = 1, i = 0; i < argbuf_index; i++) 2823 if (strcmp (argbuf[i], "|") == 0) 2824 n_commands++; 2825 2826 /* Get storage for each command. */ 2827 commands = alloca (n_commands * sizeof (struct command)); 2828 2829 /* Split argbuf into its separate piped processes, 2830 and record info about each one. 2831 Also search for the programs that are to be run. */ 2832 2833 commands[0].prog = argbuf[0]; /* first command. */ 2834 commands[0].argv = &argbuf[0]; 2835 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false); 2836 2837 if (string) 2838 commands[0].argv[0] = string; 2839 2840 for (n_commands = 1, i = 0; i < argbuf_index; i++) 2841 if (strcmp (argbuf[i], "|") == 0) 2842 { /* each command. */ 2843#if defined (__MSDOS__) || defined (OS2) || defined (VMS) 2844 fatal ("-pipe not supported"); 2845#endif 2846 argbuf[i] = 0; /* termination of command args. */ 2847 commands[n_commands].prog = argbuf[i + 1]; 2848 commands[n_commands].argv = &argbuf[i + 1]; 2849 string = find_a_file (&exec_prefixes, commands[n_commands].prog, 2850 X_OK, false); 2851 if (string) 2852 commands[n_commands].argv[0] = string; 2853 n_commands++; 2854 } 2855 2856 argbuf[argbuf_index] = 0; 2857 2858 /* If -v, print what we are about to do, and maybe query. */ 2859 2860 if (verbose_flag) 2861 { 2862 /* For help listings, put a blank line between sub-processes. */ 2863 if (print_help_list) 2864 fputc ('\n', stderr); 2865 2866 /* Print each piped command as a separate line. */ 2867 for (i = 0; i < n_commands; i++) 2868 { 2869 const char *const *j; 2870 2871 if (verbose_only_flag) 2872 { 2873 for (j = commands[i].argv; *j; j++) 2874 { 2875 const char *p; 2876 fprintf (stderr, " \""); 2877 for (p = *j; *p; ++p) 2878 { 2879 if (*p == '"' || *p == '\\' || *p == '$') 2880 fputc ('\\', stderr); 2881 fputc (*p, stderr); 2882 } 2883 fputc ('"', stderr); 2884 } 2885 } 2886 else 2887 for (j = commands[i].argv; *j; j++) 2888 fprintf (stderr, " %s", *j); 2889 2890 /* Print a pipe symbol after all but the last command. */ 2891 if (i + 1 != n_commands) 2892 fprintf (stderr, " |"); 2893 fprintf (stderr, "\n"); 2894 } 2895 fflush (stderr); 2896 if (verbose_only_flag != 0) 2897 { 2898 /* verbose_only_flag should act as if the spec was 2899 executed, so increment execution_count before 2900 returning. This prevents spurious warnings about 2901 unused linker input files, etc. */ 2902 execution_count++; 2903 return 0; 2904 } 2905#ifdef DEBUG 2906 notice ("\nGo ahead? (y or n) "); 2907 fflush (stderr); 2908 i = getchar (); 2909 if (i != '\n') 2910 while (getchar () != '\n') 2911 ; 2912 2913 if (i != 'y' && i != 'Y') 2914 return 0; 2915#endif /* DEBUG */ 2916 } 2917 2918#ifdef ENABLE_VALGRIND_CHECKING 2919 /* Run the each command through valgrind. To simplify prepending the 2920 path to valgrind and the option "-q" (for quiet operation unless 2921 something triggers), we allocate a separate argv array. */ 2922 2923 for (i = 0; i < n_commands; i++) 2924 { 2925 const char **argv; 2926 int argc; 2927 int j; 2928 2929 for (argc = 0; commands[i].argv[argc] != NULL; argc++) 2930 ; 2931 2932 argv = alloca ((argc + 3) * sizeof (char *)); 2933 2934 argv[0] = VALGRIND_PATH; 2935 argv[1] = "-q"; 2936 for (j = 2; j < argc + 2; j++) 2937 argv[j] = commands[i].argv[j - 2]; 2938 argv[j] = NULL; 2939 2940 commands[i].argv = argv; 2941 commands[i].prog = argv[0]; 2942 } 2943#endif 2944 2945 /* Run each piped subprocess. */ 2946 2947 pex = pex_init (PEX_USE_PIPES | (report_times ? PEX_RECORD_TIMES : 0), 2948 programname, temp_filename); 2949 if (pex == NULL) 2950 pfatal_with_name (_("pex_init failed")); 2951 2952 for (i = 0; i < n_commands; i++) 2953 { 2954 const char *errmsg; 2955 int err; 2956 const char *string = commands[i].argv[0]; 2957 2958 errmsg = pex_run (pex, 2959 ((i + 1 == n_commands ? PEX_LAST : 0) 2960 | (string == commands[i].prog ? PEX_SEARCH : 0)), 2961 string, (char * const *) commands[i].argv, 2962 NULL, NULL, &err); 2963 if (errmsg != NULL) 2964 { 2965 if (err == 0) 2966 fatal (errmsg); 2967 else 2968 { 2969 errno = err; 2970 pfatal_with_name (errmsg); 2971 } 2972 } 2973 2974 if (string != commands[i].prog) 2975 free ((void *) string); 2976 } 2977 2978 execution_count++; 2979 2980 /* Wait for all the subprocesses to finish. */ 2981 2982 { 2983 int *statuses; 2984 struct pex_time *times = NULL; 2985 int ret_code = 0; 2986 2987 statuses = alloca (n_commands * sizeof (int)); 2988 if (!pex_get_status (pex, n_commands, statuses)) 2989 pfatal_with_name (_("failed to get exit status")); 2990 2991 if (report_times) 2992 { 2993 times = alloca (n_commands * sizeof (struct pex_time)); 2994 if (!pex_get_times (pex, n_commands, times)) 2995 pfatal_with_name (_("failed to get process times")); 2996 } 2997 2998 pex_free (pex); 2999 3000 for (i = 0; i < n_commands; ++i) 3001 { 3002 int status = statuses[i]; 3003 3004 if (WIFSIGNALED (status)) 3005 { 3006#ifdef SIGPIPE 3007 /* SIGPIPE is a special case. It happens in -pipe mode 3008 when the compiler dies before the preprocessor is done, 3009 or the assembler dies before the compiler is done. 3010 There's generally been an error already, and this is 3011 just fallout. So don't generate another error unless 3012 we would otherwise have succeeded. */ 3013 if (WTERMSIG (status) == SIGPIPE 3014 && (signal_count || greatest_status >= MIN_FATAL_STATUS)) 3015 { 3016 signal_count++; 3017 ret_code = -1; 3018 } 3019 else 3020#endif 3021 fatal_ice ("\ 3022Internal error: %s (program %s)\n\ 3023Please submit a full bug report.\n\ 3024See %s for instructions.", 3025 strsignal (WTERMSIG (status)), commands[i].prog, 3026 bug_report_url); 3027 } 3028 else if (WIFEXITED (status) 3029 && WEXITSTATUS (status) >= MIN_FATAL_STATUS) 3030 { 3031 if (WEXITSTATUS (status) > greatest_status) 3032 greatest_status = WEXITSTATUS (status); 3033 ret_code = -1; 3034 } 3035 3036 if (report_times) 3037 { 3038 struct pex_time *pt = ×[i]; 3039 double ut, st; 3040 3041 ut = ((double) pt->user_seconds 3042 + (double) pt->user_microseconds / 1.0e6); 3043 st = ((double) pt->system_seconds 3044 + (double) pt->system_microseconds / 1.0e6); 3045 3046 if (ut + st != 0) 3047 notice ("# %s %.2f %.2f\n", commands[i].prog, ut, st); 3048 } 3049 } 3050 3051 return ret_code; 3052 } 3053} 3054 3055/* Find all the switches given to us 3056 and make a vector describing them. 3057 The elements of the vector are strings, one per switch given. 3058 If a switch uses following arguments, then the `part1' field 3059 is the switch itself and the `args' field 3060 is a null-terminated vector containing the following arguments. 3061 The `live_cond' field is: 3062 0 when initialized 3063 1 if the switch is true in a conditional spec, 3064 -1 if false (overridden by a later switch) 3065 -2 if this switch should be ignored (used in %<S) 3066 The `validated' field is nonzero if any spec has looked at this switch; 3067 if it remains zero at the end of the run, it must be meaningless. */ 3068 3069#define SWITCH_OK 0 3070#define SWITCH_FALSE -1 3071#define SWITCH_IGNORE -2 3072#define SWITCH_LIVE 1 3073 3074struct switchstr 3075{ 3076 const char *part1; 3077 const char **args; 3078 int live_cond; 3079 unsigned char validated; 3080 unsigned char ordering; 3081}; 3082 3083static struct switchstr *switches; 3084 3085static int n_switches; 3086 3087/* Language is one of three things: 3088 3089 1) The name of a real programming language. 3090 2) NULL, indicating that no one has figured out 3091 what it is yet. 3092 3) '*', indicating that the file should be passed 3093 to the linker. */ 3094struct infile 3095{ 3096 const char *name; 3097 const char *language; 3098 struct compiler *incompiler; 3099 bool compiled; 3100 bool preprocessed; 3101}; 3102 3103/* Also a vector of input files specified. */ 3104 3105static struct infile *infiles; 3106 3107int n_infiles; 3108 3109/* True if multiple input files are being compiled to a single 3110 assembly file. */ 3111 3112static bool combine_inputs; 3113 3114/* This counts the number of libraries added by lang_specific_driver, so that 3115 we can tell if there were any user supplied any files or libraries. */ 3116 3117static int added_libraries; 3118 3119/* And a vector of corresponding output files is made up later. */ 3120 3121const char **outfiles; 3122 3123#if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX) 3124 3125/* Convert NAME to a new name if it is the standard suffix. DO_EXE 3126 is true if we should look for an executable suffix. DO_OBJ 3127 is true if we should look for an object suffix. */ 3128 3129static const char * 3130convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED, 3131 int do_obj ATTRIBUTE_UNUSED) 3132{ 3133#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) 3134 int i; 3135#endif 3136 int len; 3137 3138 if (name == NULL) 3139 return NULL; 3140 3141 len = strlen (name); 3142 3143#ifdef HAVE_TARGET_OBJECT_SUFFIX 3144 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */ 3145 if (do_obj && len > 2 3146 && name[len - 2] == '.' 3147 && name[len - 1] == 'o') 3148 { 3149 obstack_grow (&obstack, name, len - 2); 3150 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX)); 3151 name = XOBFINISH (&obstack, const char *); 3152 } 3153#endif 3154 3155#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) 3156 /* If there is no filetype, make it the executable suffix (which includes 3157 the "."). But don't get confused if we have just "-o". */ 3158 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-')) 3159 return name; 3160 3161 for (i = len - 1; i >= 0; i--) 3162 if (IS_DIR_SEPARATOR (name[i])) 3163 break; 3164 3165 for (i++; i < len; i++) 3166 if (name[i] == '.') 3167 return name; 3168 3169 obstack_grow (&obstack, name, len); 3170 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX, 3171 strlen (TARGET_EXECUTABLE_SUFFIX)); 3172 name = XOBFINISH (&obstack, const char *); 3173#endif 3174 3175 return name; 3176} 3177#endif 3178 3179/* Display the command line switches accepted by gcc. */ 3180static void 3181display_help (void) 3182{ 3183 printf (_("Usage: %s [options] file...\n"), programname); 3184 fputs (_("Options:\n"), stdout); 3185 3186 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout); 3187 fputs (_(" --help Display this information\n"), stdout); 3188 fputs (_(" --target-help Display target specific command line options\n"), stdout); 3189 if (! verbose_flag) 3190 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout); 3191 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout); 3192 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout); 3193 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout); 3194 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout); 3195 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout); 3196 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout); 3197 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout); 3198 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout); 3199 fputs (_("\ 3200 -print-multi-lib Display the mapping between command line options and\n\ 3201 multiple library search directories\n"), stdout); 3202 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout); 3203 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout); 3204 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout); 3205 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout); 3206 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout); 3207 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout); 3208 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout); 3209 fputs (_(" -combine Pass multiple source files to compiler at once\n"), stdout); 3210 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout); 3211 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout); 3212 fputs (_(" -time Time the execution of each subprocess\n"), stdout); 3213 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout); 3214 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout); 3215 fputs (_("\ 3216 --sysroot=<directory> Use <directory> as the root directory for headers\n\ 3217 and libraries\n"), stdout); 3218 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout); 3219 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout); 3220 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout); 3221 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout); 3222 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout); 3223 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout); 3224 fputs (_(" -S Compile only; do not assemble or link\n"), stdout); 3225 fputs (_(" -c Compile and assemble, but do not link\n"), stdout); 3226 fputs (_(" -o <file> Place the output into <file>\n"), stdout); 3227 fputs (_("\ 3228 -x <language> Specify the language of the following input files\n\ 3229 Permissible languages include: c c++ assembler none\n\ 3230 'none' means revert to the default behavior of\n\ 3231 guessing the language based on the file's extension\n\ 3232"), stdout); 3233 3234 printf (_("\ 3235\nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\ 3236 passed on to the various sub-processes invoked by %s. In order to pass\n\ 3237 other options on to these processes the -W<letter> options must be used.\n\ 3238"), programname); 3239 3240 /* The rest of the options are displayed by invocations of the various 3241 sub-processes. */ 3242} 3243 3244static void 3245add_preprocessor_option (const char *option, int len) 3246{ 3247 n_preprocessor_options++; 3248 3249 if (! preprocessor_options) 3250 preprocessor_options = XNEWVEC (char *, n_preprocessor_options); 3251 else 3252 preprocessor_options = xrealloc (preprocessor_options, 3253 n_preprocessor_options * sizeof (char *)); 3254 3255 preprocessor_options [n_preprocessor_options - 1] = 3256 save_string (option, len); 3257} 3258 3259static void 3260add_assembler_option (const char *option, int len) 3261{ 3262 n_assembler_options++; 3263 3264 if (! assembler_options) 3265 assembler_options = XNEWVEC (char *, n_assembler_options); 3266 else 3267 assembler_options = xrealloc (assembler_options, 3268 n_assembler_options * sizeof (char *)); 3269 3270 assembler_options [n_assembler_options - 1] = save_string (option, len); 3271} 3272 3273static void 3274add_linker_option (const char *option, int len) 3275{ 3276 n_linker_options++; 3277 3278 if (! linker_options) 3279 linker_options = XNEWVEC (char *, n_linker_options); 3280 else 3281 linker_options = xrealloc (linker_options, 3282 n_linker_options * sizeof (char *)); 3283 3284 linker_options [n_linker_options - 1] = save_string (option, len); 3285} 3286 3287/* Create the vector `switches' and its contents. 3288 Store its length in `n_switches'. */ 3289 3290static void 3291process_command (int argc, const char **argv) 3292{ 3293 int i; 3294 const char *temp; 3295 char *temp1; 3296 const char *spec_lang = 0; 3297 int last_language_n_infiles; 3298 int lang_n_infiles = 0; 3299#ifdef MODIFY_TARGET_NAME 3300 int is_modify_target_name; 3301 unsigned int j; 3302#endif 3303 3304 GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX"); 3305 3306 n_switches = 0; 3307 n_infiles = 0; 3308 added_libraries = 0; 3309 3310 /* Figure compiler version from version string. */ 3311 3312 compiler_version = temp1 = xstrdup (version_string); 3313 3314 for (; *temp1; ++temp1) 3315 { 3316 if (*temp1 == ' ') 3317 { 3318 *temp1 = '\0'; 3319 break; 3320 } 3321 } 3322 3323 /* If there is a -V or -b option (or both), process it now, before 3324 trying to interpret the rest of the command line. 3325 Use heuristic that all configuration names must have at least 3326 one dash '-'. This allows us to pass options starting with -b. */ 3327 if (argc > 1 && argv[1][0] == '-' 3328 && (argv[1][1] == 'V' || 3329 ((argv[1][1] == 'b') && (NULL != strchr(argv[1] + 2,'-'))))) 3330 { 3331 const char *new_version = DEFAULT_TARGET_VERSION; 3332 const char *new_machine = DEFAULT_TARGET_MACHINE; 3333 const char *progname = argv[0]; 3334 char **new_argv; 3335 char *new_argv0; 3336 int baselen; 3337 3338 while (argc > 1 && argv[1][0] == '-' 3339 && (argv[1][1] == 'V' || 3340 ((argv[1][1] == 'b') && ( NULL != strchr(argv[1] + 2,'-'))))) 3341 { 3342 char opt = argv[1][1]; 3343 const char *arg; 3344 if (argv[1][2] != '\0') 3345 { 3346 arg = argv[1] + 2; 3347 argc -= 1; 3348 argv += 1; 3349 } 3350 else if (argc > 2) 3351 { 3352 arg = argv[2]; 3353 argc -= 2; 3354 argv += 2; 3355 } 3356 else 3357 fatal ("'-%c' option must have argument", opt); 3358 if (opt == 'V') 3359 new_version = arg; 3360 else 3361 new_machine = arg; 3362 } 3363 3364 for (baselen = strlen (progname); baselen > 0; baselen--) 3365 if (IS_DIR_SEPARATOR (progname[baselen-1])) 3366 break; 3367 new_argv0 = xmemdup (progname, baselen, 3368 baselen + concat_length (new_version, new_machine, 3369 "-gcc-", NULL) + 1); 3370 strcpy (new_argv0 + baselen, new_machine); 3371 strcat (new_argv0, "-gcc-"); 3372 strcat (new_argv0, new_version); 3373 3374 new_argv = xmemdup (argv, (argc + 1) * sizeof (argv[0]), 3375 (argc + 1) * sizeof (argv[0])); 3376 new_argv[0] = new_argv0; 3377 3378 execvp (new_argv0, new_argv); 3379 fatal ("couldn't run '%s': %s", new_argv0, xstrerror (errno)); 3380 } 3381 3382 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX, 3383 see if we can create it from the pathname specified in argv[0]. */ 3384 3385 gcc_libexec_prefix = standard_libexec_prefix; 3386#ifndef FREEBSD_NATIVE 3387#ifndef VMS 3388 /* FIXME: make_relative_prefix doesn't yet work for VMS. */ 3389 if (!gcc_exec_prefix) 3390 { 3391 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix, 3392 standard_exec_prefix); 3393 gcc_libexec_prefix = make_relative_prefix (argv[0], 3394 standard_bindir_prefix, 3395 standard_libexec_prefix); 3396 if (gcc_exec_prefix) 3397 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL)); 3398 } 3399 else 3400 { 3401 /* make_relative_prefix requires a program name, but 3402 GCC_EXEC_PREFIX is typically a directory name with a trailing 3403 / (which is ignored by make_relative_prefix), so append a 3404 program name. */ 3405 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL); 3406 gcc_libexec_prefix = make_relative_prefix (tmp_prefix, 3407 standard_exec_prefix, 3408 standard_libexec_prefix); 3409 free (tmp_prefix); 3410 } 3411#else 3412#endif 3413#endif /* not FREEBSD_NATIVE */ 3414 3415 if (gcc_exec_prefix) 3416 { 3417 int len = strlen (gcc_exec_prefix); 3418 3419 if (len > (int) sizeof ("/lib/gcc/") - 1 3420 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1]))) 3421 { 3422 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1; 3423 if (IS_DIR_SEPARATOR (*temp) 3424 && strncmp (temp + 1, "lib", 3) == 0 3425 && IS_DIR_SEPARATOR (temp[4]) 3426 && strncmp (temp + 5, "gcc", 3) == 0) 3427 len -= sizeof ("/lib/gcc/") - 1; 3428 } 3429 3430 set_std_prefix (gcc_exec_prefix, len); 3431 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC", 3432 PREFIX_PRIORITY_LAST, 0, 0); 3433 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC", 3434 PREFIX_PRIORITY_LAST, 0, 0); 3435 } 3436 3437 /* COMPILER_PATH and LIBRARY_PATH have values 3438 that are lists of directory names with colons. */ 3439 3440 GET_ENVIRONMENT (temp, "COMPILER_PATH"); 3441 if (temp) 3442 { 3443 const char *startp, *endp; 3444 char *nstore = alloca (strlen (temp) + 3); 3445 3446 startp = endp = temp; 3447 while (1) 3448 { 3449 if (*endp == PATH_SEPARATOR || *endp == 0) 3450 { 3451 strncpy (nstore, startp, endp - startp); 3452 if (endp == startp) 3453 strcpy (nstore, concat (".", dir_separator_str, NULL)); 3454 else if (!IS_DIR_SEPARATOR (endp[-1])) 3455 { 3456 nstore[endp - startp] = DIR_SEPARATOR; 3457 nstore[endp - startp + 1] = 0; 3458 } 3459 else 3460 nstore[endp - startp] = 0; 3461 add_prefix (&exec_prefixes, nstore, 0, 3462 PREFIX_PRIORITY_LAST, 0, 0); 3463 add_prefix (&include_prefixes, nstore, 0, 3464 PREFIX_PRIORITY_LAST, 0, 0); 3465 if (*endp == 0) 3466 break; 3467 endp = startp = endp + 1; 3468 } 3469 else 3470 endp++; 3471 } 3472 } 3473 3474 GET_ENVIRONMENT (temp, LIBRARY_PATH_ENV); 3475 if (temp && *cross_compile == '0') 3476 { 3477 const char *startp, *endp; 3478 char *nstore = alloca (strlen (temp) + 3); 3479 3480 startp = endp = temp; 3481 while (1) 3482 { 3483 if (*endp == PATH_SEPARATOR || *endp == 0) 3484 { 3485 strncpy (nstore, startp, endp - startp); 3486 if (endp == startp) 3487 strcpy (nstore, concat (".", dir_separator_str, NULL)); 3488 else if (!IS_DIR_SEPARATOR (endp[-1])) 3489 { 3490 nstore[endp - startp] = DIR_SEPARATOR; 3491 nstore[endp - startp + 1] = 0; 3492 } 3493 else 3494 nstore[endp - startp] = 0; 3495 add_prefix (&startfile_prefixes, nstore, NULL, 3496 PREFIX_PRIORITY_LAST, 0, 1); 3497 if (*endp == 0) 3498 break; 3499 endp = startp = endp + 1; 3500 } 3501 else 3502 endp++; 3503 } 3504 } 3505 3506 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */ 3507 GET_ENVIRONMENT (temp, "LPATH"); 3508 if (temp && *cross_compile == '0') 3509 { 3510 const char *startp, *endp; 3511 char *nstore = alloca (strlen (temp) + 3); 3512 3513 startp = endp = temp; 3514 while (1) 3515 { 3516 if (*endp == PATH_SEPARATOR || *endp == 0) 3517 { 3518 strncpy (nstore, startp, endp - startp); 3519 if (endp == startp) 3520 strcpy (nstore, concat (".", dir_separator_str, NULL)); 3521 else if (!IS_DIR_SEPARATOR (endp[-1])) 3522 { 3523 nstore[endp - startp] = DIR_SEPARATOR; 3524 nstore[endp - startp + 1] = 0; 3525 } 3526 else 3527 nstore[endp - startp] = 0; 3528 add_prefix (&startfile_prefixes, nstore, NULL, 3529 PREFIX_PRIORITY_LAST, 0, 1); 3530 if (*endp == 0) 3531 break; 3532 endp = startp = endp + 1; 3533 } 3534 else 3535 endp++; 3536 } 3537 } 3538 3539 /* Options specified as if they appeared on the command line. */ 3540 temp = getenv ("GCC_OPTIONS"); 3541 if ((temp) && (strlen (temp) > 0)) 3542 { 3543 int len; 3544 int optc = 1; 3545 int new_argc; 3546 const char **new_argv; 3547 char *envopts; 3548 3549 while (isspace (*temp)) 3550 temp++; 3551 len = strlen (temp); 3552 envopts = (char *) xmalloc (len + 1); 3553 strcpy (envopts, temp); 3554 3555 for (i = 0; i < (len - 1); i++) 3556 if ((isspace (envopts[i])) && ! (isspace (envopts[i+1]))) 3557 optc++; 3558 3559 new_argv = (const char **) alloca ((optc + argc) * sizeof(char *)); 3560 3561 for (i = 0, new_argc = 1; new_argc <= optc; new_argc++) 3562 { 3563 while (isspace (envopts[i])) 3564 i++; 3565 new_argv[new_argc] = envopts + i; 3566 while (!isspace (envopts[i]) && (envopts[i] != '\0')) 3567 i++; 3568 envopts[i++] = '\0'; 3569 } 3570 for (i = 1; i < argc; i++) 3571 new_argv[new_argc++] = argv[i]; 3572 3573 argv = new_argv; 3574 argc = new_argc; 3575 } 3576 3577 /* Convert new-style -- options to old-style. */ 3578 translate_options (&argc, (const char *const **) &argv); 3579 3580 /* Do language-specific adjustment/addition of flags. */ 3581 lang_specific_driver (&argc, (const char *const **) &argv, &added_libraries); 3582 3583 /* Scan argv twice. Here, the first time, just count how many switches 3584 there will be in their vector, and how many input files in theirs. 3585 Here we also parse the switches that cc itself uses (e.g. -v). */ 3586 3587 for (i = 1; i < argc; i++) 3588 { 3589 if (! strcmp (argv[i], "-dumpspecs")) 3590 { 3591 struct spec_list *sl; 3592 init_spec (); 3593 for (sl = specs; sl; sl = sl->next) 3594 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec)); 3595 if (link_command_spec) 3596 printf ("*link_command:\n%s\n\n", link_command_spec); 3597 exit (0); 3598 } 3599 else if (! strcmp (argv[i], "-dumpversion")) 3600 { 3601 printf ("%s\n", spec_version); 3602 exit (0); 3603 } 3604 else if (! strcmp (argv[i], "-dumpmachine")) 3605 { 3606 printf ("%s\n", spec_machine); 3607 exit (0); 3608 } 3609 else if (strcmp (argv[i], "-fversion") == 0) 3610 { 3611 /* translate_options () has turned --version into -fversion. */ 3612 printf (_("%s (GCC) %s\n"), programname, version_string); 3613 printf ("Copyright %s 2007 Free Software Foundation, Inc.\n", 3614 _("(C)")); 3615 fputs (_("This is free software; see the source for copying conditions. There is NO\n\ 3616warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"), 3617 stdout); 3618 exit (0); 3619 } 3620 else if (strcmp (argv[i], "-fhelp") == 0) 3621 { 3622 /* translate_options () has turned --help into -fhelp. */ 3623 print_help_list = 1; 3624 3625 /* We will be passing a dummy file on to the sub-processes. */ 3626 n_infiles++; 3627 n_switches++; 3628 3629 /* CPP driver cannot obtain switch from cc1_options. */ 3630 if (is_cpp_driver) 3631 add_preprocessor_option ("--help", 6); 3632 add_assembler_option ("--help", 6); 3633 add_linker_option ("--help", 6); 3634 } 3635 else if (strcmp (argv[i], "-ftarget-help") == 0) 3636 { 3637 /* translate_options() has turned --target-help into -ftarget-help. */ 3638 target_help_flag = 1; 3639 3640 /* We will be passing a dummy file on to the sub-processes. */ 3641 n_infiles++; 3642 n_switches++; 3643 3644 /* CPP driver cannot obtain switch from cc1_options. */ 3645 if (is_cpp_driver) 3646 add_preprocessor_option ("--target-help", 13); 3647 add_assembler_option ("--target-help", 13); 3648 add_linker_option ("--target-help", 13); 3649 } 3650 else if (! strcmp (argv[i], "-pass-exit-codes")) 3651 { 3652 pass_exit_codes = 1; 3653 n_switches++; 3654 } 3655 else if (! strcmp (argv[i], "-print-search-dirs")) 3656 print_search_dirs = 1; 3657 else if (! strcmp (argv[i], "-print-libgcc-file-name")) 3658 print_file_name = "libgcc.a"; 3659 else if (! strncmp (argv[i], "-print-file-name=", 17)) 3660 print_file_name = argv[i] + 17; 3661 else if (! strncmp (argv[i], "-print-prog-name=", 17)) 3662 print_prog_name = argv[i] + 17; 3663 else if (! strcmp (argv[i], "-print-multi-lib")) 3664 print_multi_lib = 1; 3665 else if (! strcmp (argv[i], "-print-multi-directory")) 3666 print_multi_directory = 1; 3667 else if (! strcmp (argv[i], "-print-multi-os-directory")) 3668 print_multi_os_directory = 1; 3669 else if (! strncmp (argv[i], "-Wa,", 4)) 3670 { 3671 int prev, j; 3672 /* Pass the rest of this option to the assembler. */ 3673 3674 /* Split the argument at commas. */ 3675 prev = 4; 3676 for (j = 4; argv[i][j]; j++) 3677 if (argv[i][j] == ',') 3678 { 3679 add_assembler_option (argv[i] + prev, j - prev); 3680 prev = j + 1; 3681 } 3682 3683 /* Record the part after the last comma. */ 3684 add_assembler_option (argv[i] + prev, j - prev); 3685 } 3686 else if (! strncmp (argv[i], "-Wp,", 4)) 3687 { 3688 int prev, j; 3689 /* Pass the rest of this option to the preprocessor. */ 3690 3691 /* Split the argument at commas. */ 3692 prev = 4; 3693 for (j = 4; argv[i][j]; j++) 3694 if (argv[i][j] == ',') 3695 { 3696 add_preprocessor_option (argv[i] + prev, j - prev); 3697 prev = j + 1; 3698 } 3699 3700 /* Record the part after the last comma. */ 3701 add_preprocessor_option (argv[i] + prev, j - prev); 3702 } 3703 else if (argv[i][0] == '+' && argv[i][1] == 'e') 3704 /* The +e options to the C++ front-end. */ 3705 n_switches++; 3706 else if (strncmp (argv[i], "-Wl,", 4) == 0) 3707 { 3708 int j; 3709 /* Split the argument at commas. */ 3710 for (j = 3; argv[i][j]; j++) 3711 n_infiles += (argv[i][j] == ','); 3712 } 3713 else if (strcmp (argv[i], "-Xlinker") == 0) 3714 { 3715 if (i + 1 == argc) 3716 fatal ("argument to '-Xlinker' is missing"); 3717 3718 n_infiles++; 3719 i++; 3720 } 3721 else if (strcmp (argv[i], "-Xpreprocessor") == 0) 3722 { 3723 if (i + 1 == argc) 3724 fatal ("argument to '-Xpreprocessor' is missing"); 3725 3726 add_preprocessor_option (argv[i+1], strlen (argv[i+1])); 3727 } 3728 else if (strcmp (argv[i], "-Xassembler") == 0) 3729 { 3730 if (i + 1 == argc) 3731 fatal ("argument to '-Xassembler' is missing"); 3732 3733 add_assembler_option (argv[i+1], strlen (argv[i+1])); 3734 } 3735 else if (strcmp (argv[i], "-l") == 0) 3736 { 3737 if (i + 1 == argc) 3738 fatal ("argument to '-l' is missing"); 3739 3740 n_infiles++; 3741 i++; 3742 } 3743 else if (strncmp (argv[i], "-l", 2) == 0) 3744 n_infiles++; 3745 else if (strcmp (argv[i], "-save-temps") == 0) 3746 { 3747 save_temps_flag = 1; 3748 n_switches++; 3749 } 3750 else if (strcmp (argv[i], "-combine") == 0) 3751 { 3752 combine_flag = 1; 3753 n_switches++; 3754 } 3755 else if (strcmp (argv[i], "-specs") == 0) 3756 { 3757 struct user_specs *user = XNEW (struct user_specs); 3758 if (++i >= argc) 3759 fatal ("argument to '-specs' is missing"); 3760 3761 user->next = (struct user_specs *) 0; 3762 user->filename = argv[i]; 3763 if (user_specs_tail) 3764 user_specs_tail->next = user; 3765 else 3766 user_specs_head = user; 3767 user_specs_tail = user; 3768 } 3769 else if (strncmp (argv[i], "-specs=", 7) == 0) 3770 { 3771 struct user_specs *user = XNEW (struct user_specs); 3772 if (strlen (argv[i]) == 7) 3773 fatal ("argument to '-specs=' is missing"); 3774 3775 user->next = (struct user_specs *) 0; 3776 user->filename = argv[i] + 7; 3777 if (user_specs_tail) 3778 user_specs_tail->next = user; 3779 else 3780 user_specs_head = user; 3781 user_specs_tail = user; 3782 } 3783 else if (strcmp (argv[i], "-time") == 0) 3784 report_times = 1; 3785 else if (strcmp (argv[i], "-pipe") == 0) 3786 { 3787 /* -pipe has to go into the switches array as well as 3788 setting a flag. */ 3789 use_pipes = 1; 3790 n_switches++; 3791 } 3792 else if (strcmp (argv[i], "-###") == 0) 3793 { 3794 /* This is similar to -v except that there is no execution 3795 of the commands and the echoed arguments are quoted. It 3796 is intended for use in shell scripts to capture the 3797 driver-generated command line. */ 3798 verbose_only_flag++; 3799 verbose_flag++; 3800 } 3801 else if (argv[i][0] == '-' && argv[i][1] != 0) 3802 { 3803 const char *p = &argv[i][1]; 3804 int c = *p; 3805 3806 switch (c) 3807 { 3808 case 'b': 3809 if (NULL == strchr(argv[i] + 2, '-')) 3810 goto normal_switch; 3811 3812 /* Fall through. */ 3813 case 'V': 3814 fatal ("'-%c' must come at the start of the command line", c); 3815 break; 3816 3817 case 'B': 3818 { 3819 const char *value; 3820 int len; 3821 3822 if (p[1] == 0 && i + 1 == argc) 3823 fatal ("argument to '-B' is missing"); 3824 if (p[1] == 0) 3825 value = argv[++i]; 3826 else 3827 value = p + 1; 3828 3829 len = strlen (value); 3830 3831 /* Catch the case where the user has forgotten to append a 3832 directory separator to the path. Note, they may be using 3833 -B to add an executable name prefix, eg "i386-elf-", in 3834 order to distinguish between multiple installations of 3835 GCC in the same directory. Hence we must check to see 3836 if appending a directory separator actually makes a 3837 valid directory name. */ 3838 if (! IS_DIR_SEPARATOR (value [len - 1]) 3839 && is_directory (value, false)) 3840 { 3841 char *tmp = XNEWVEC (char, len + 2); 3842 strcpy (tmp, value); 3843 tmp[len] = DIR_SEPARATOR; 3844 tmp[++ len] = 0; 3845 value = tmp; 3846 } 3847 3848 /* As a kludge, if the arg is "[foo/]stageN/", just 3849 add "[foo/]include" to the include prefix. */ 3850 if ((len == 7 3851 || (len > 7 3852 && (IS_DIR_SEPARATOR (value[len - 8])))) 3853 && strncmp (value + len - 7, "stage", 5) == 0 3854 && ISDIGIT (value[len - 2]) 3855 && (IS_DIR_SEPARATOR (value[len - 1]))) 3856 { 3857 if (len == 7) 3858 add_prefix (&include_prefixes, "./", NULL, 3859 PREFIX_PRIORITY_B_OPT, 0, 0); 3860 else 3861 { 3862 char *string = xmalloc (len - 6); 3863 memcpy (string, value, len - 7); 3864 string[len - 7] = 0; 3865 add_prefix (&include_prefixes, string, NULL, 3866 PREFIX_PRIORITY_B_OPT, 0, 0); 3867 } 3868 } 3869 3870 add_prefix (&exec_prefixes, value, NULL, 3871 PREFIX_PRIORITY_B_OPT, 0, 0); 3872 add_prefix (&startfile_prefixes, value, NULL, 3873 PREFIX_PRIORITY_B_OPT, 0, 0); 3874 add_prefix (&include_prefixes, value, NULL, 3875 PREFIX_PRIORITY_B_OPT, 0, 0); 3876 n_switches++; 3877 } 3878 break; 3879 3880 case 'v': /* Print our subcommands and print versions. */ 3881 n_switches++; 3882 /* If they do anything other than exactly `-v', don't set 3883 verbose_flag; rather, continue on to give the error. */ 3884 if (p[1] != 0) 3885 break; 3886 verbose_flag++; 3887 break; 3888 3889 case 'S': 3890 case 'c': 3891 if (p[1] == 0) 3892 { 3893 have_c = 1; 3894 n_switches++; 3895 break; 3896 } 3897 goto normal_switch; 3898 3899 case 'o': 3900 have_o = 1; 3901#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) 3902 if (! have_c) 3903 { 3904 int skip; 3905 3906 /* Forward scan, just in case -S or -c is specified 3907 after -o. */ 3908 int j = i + 1; 3909 if (p[1] == 0) 3910 ++j; 3911 while (j < argc) 3912 { 3913 if (argv[j][0] == '-') 3914 { 3915 if (SWITCH_CURTAILS_COMPILATION (argv[j][1]) 3916 && argv[j][2] == 0) 3917 { 3918 have_c = 1; 3919 break; 3920 } 3921 else if ((skip = SWITCH_TAKES_ARG (argv[j][1]))) 3922 j += skip - (argv[j][2] != 0); 3923 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1))) 3924 j += skip; 3925 } 3926 j++; 3927 } 3928 } 3929#endif 3930#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX) 3931 if (p[1] == 0) 3932 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0); 3933 else 3934 argv[i] = convert_filename (argv[i], ! have_c, 0); 3935#endif 3936 goto normal_switch; 3937 3938 default: 3939 normal_switch: 3940 3941#ifdef MODIFY_TARGET_NAME 3942 is_modify_target_name = 0; 3943 3944 for (j = 0; j < ARRAY_SIZE (modify_target); j++) 3945 if (! strcmp (argv[i], modify_target[j].sw)) 3946 { 3947 char *new_name = xmalloc (strlen (modify_target[j].str) 3948 + strlen (spec_machine)); 3949 const char *p, *r; 3950 char *q; 3951 int made_addition = 0; 3952 3953 is_modify_target_name = 1; 3954 for (p = spec_machine, q = new_name; *p != 0; ) 3955 { 3956 if (modify_target[j].add_del == DELETE 3957 && (! strncmp (q, modify_target[j].str, 3958 strlen (modify_target[j].str)))) 3959 p += strlen (modify_target[j].str); 3960 else if (modify_target[j].add_del == ADD 3961 && ! made_addition && *p == '-') 3962 { 3963 for (r = modify_target[j].str; *r != 0; ) 3964 *q++ = *r++; 3965 made_addition = 1; 3966 } 3967 3968 *q++ = *p++; 3969 } 3970 3971 spec_machine = new_name; 3972 } 3973 3974 if (is_modify_target_name) 3975 break; 3976#endif 3977 3978 n_switches++; 3979 3980 if (SWITCH_TAKES_ARG (c) > (p[1] != 0)) 3981 i += SWITCH_TAKES_ARG (c) - (p[1] != 0); 3982 else if (WORD_SWITCH_TAKES_ARG (p)) 3983 i += WORD_SWITCH_TAKES_ARG (p); 3984 } 3985 } 3986 else 3987 { 3988 n_infiles++; 3989 lang_n_infiles++; 3990 } 3991 } 3992 3993 if (save_temps_flag && use_pipes) 3994 { 3995 /* -save-temps overrides -pipe, so that temp files are produced */ 3996 if (save_temps_flag) 3997 error ("warning: -pipe ignored because -save-temps specified"); 3998 use_pipes = 0; 3999 } 4000 4001 /* Set up the search paths before we go looking for config files. */ 4002#ifdef FREEBSD_NATIVE 4003 add_prefix (&exec_prefixes, PREFIX"/bin/", "BINUTILS", 4004 PREFIX_PRIORITY_LAST, 0, 0); 4005#endif /* FREEBSD_NATIVE */ 4006 4007 /* These come before the md prefixes so that we will find gcc's subcommands 4008 (such as cpp) rather than those of the host system. */ 4009 /* Use 2 as fourth arg meaning try just the machine as a suffix, 4010 as well as trying the machine and the version. */ 4011#ifndef OS2 4012 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC", 4013 PREFIX_PRIORITY_LAST, 1, 0); 4014 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS", 4015 PREFIX_PRIORITY_LAST, 2, 0); 4016#ifndef FREEBSD_NATIVE 4017 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS", 4018 PREFIX_PRIORITY_LAST, 2, 0); 4019 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS", 4020 PREFIX_PRIORITY_LAST, 2, 0); 4021 add_prefix (&exec_prefixes, standard_exec_prefix_2, "BINUTILS", 4022 PREFIX_PRIORITY_LAST, 2, 0); 4023#endif 4024#endif 4025 4026#ifndef FREEBSD_NATIVE 4027 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS", 4028 PREFIX_PRIORITY_LAST, 1, 0); 4029 add_prefix (&startfile_prefixes, standard_exec_prefix_2, "BINUTILS", 4030 PREFIX_PRIORITY_LAST, 1, 0); 4031 4032 tooldir_prefix = concat (tooldir_base_prefix, spec_machine, 4033 dir_separator_str, NULL); 4034 4035 /* If tooldir is relative, base it on exec_prefixes. A relative 4036 tooldir lets us move the installed tree as a unit. 4037 4038 If GCC_EXEC_PREFIX is defined, then we want to add two relative 4039 directories, so that we can search both the user specified directory 4040 and the standard place. */ 4041 4042 if (!IS_ABSOLUTE_PATH (tooldir_prefix)) 4043 { 4044 if (gcc_exec_prefix) 4045 { 4046 char *gcc_exec_tooldir_prefix 4047 = concat (gcc_exec_prefix, spec_machine, dir_separator_str, 4048 spec_version, dir_separator_str, tooldir_prefix, NULL); 4049 4050 add_prefix (&exec_prefixes, 4051 concat (gcc_exec_tooldir_prefix, "bin", 4052 dir_separator_str, NULL), 4053 NULL, PREFIX_PRIORITY_LAST, 0, 0); 4054 add_prefix (&startfile_prefixes, 4055 concat (gcc_exec_tooldir_prefix, "lib", 4056 dir_separator_str, NULL), 4057 NULL, PREFIX_PRIORITY_LAST, 0, 1); 4058 } 4059 4060 tooldir_prefix = concat (standard_exec_prefix, spec_machine, 4061 dir_separator_str, spec_version, 4062 dir_separator_str, tooldir_prefix, NULL); 4063 } 4064 4065 add_prefix (&exec_prefixes, 4066 concat (tooldir_prefix, "bin", dir_separator_str, NULL), 4067 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0); 4068 add_prefix (&startfile_prefixes, 4069 concat (tooldir_prefix, "lib", dir_separator_str, NULL), 4070 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1); 4071 4072#if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS) 4073 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix, 4074 then consider it to relocate with the rest of the GCC installation 4075 if GCC_EXEC_PREFIX is set. 4076 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */ 4077 if (target_system_root && gcc_exec_prefix) 4078 { 4079 char *tmp_prefix = make_relative_prefix (argv[0], 4080 standard_bindir_prefix, 4081 target_system_root); 4082 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0) 4083 { 4084 target_system_root = tmp_prefix; 4085 target_system_root_changed = 1; 4086 } 4087 } 4088#endif 4089#endif /* FREEBSD_NATIVE */ 4090 4091 /* More prefixes are enabled in main, after we read the specs file 4092 and determine whether this is cross-compilation or not. */ 4093 4094 /* Then create the space for the vectors and scan again. */ 4095 4096 switches = XNEWVEC (struct switchstr, n_switches + 1); 4097 infiles = XNEWVEC (struct infile, n_infiles + 1); 4098 n_switches = 0; 4099 n_infiles = 0; 4100 last_language_n_infiles = -1; 4101 4102 /* This, time, copy the text of each switch and store a pointer 4103 to the copy in the vector of switches. 4104 Store all the infiles in their vector. */ 4105 4106 for (i = 1; i < argc; i++) 4107 { 4108 /* Just skip the switches that were handled by the preceding loop. */ 4109#ifdef MODIFY_TARGET_NAME 4110 is_modify_target_name = 0; 4111 4112 for (j = 0; j < ARRAY_SIZE (modify_target); j++) 4113 if (! strcmp (argv[i], modify_target[j].sw)) 4114 is_modify_target_name = 1; 4115 4116 if (is_modify_target_name) 4117 ; 4118 else 4119#endif 4120 if (! strncmp (argv[i], "-Wa,", 4)) 4121 ; 4122 else if (! strncmp (argv[i], "-Wp,", 4)) 4123 ; 4124 else if (! strcmp (argv[i], "-pass-exit-codes")) 4125 ; 4126 else if (! strcmp (argv[i], "-print-search-dirs")) 4127 ; 4128 else if (! strcmp (argv[i], "-print-libgcc-file-name")) 4129 ; 4130 else if (! strncmp (argv[i], "-print-file-name=", 17)) 4131 ; 4132 else if (! strncmp (argv[i], "-print-prog-name=", 17)) 4133 ; 4134 else if (! strcmp (argv[i], "-print-multi-lib")) 4135 ; 4136 else if (! strcmp (argv[i], "-print-multi-directory")) 4137 ; 4138 else if (! strcmp (argv[i], "-print-multi-os-directory")) 4139 ; 4140 else if (! strcmp (argv[i], "-ftarget-help")) 4141 ; 4142 else if (! strcmp (argv[i], "-fhelp")) 4143 ; 4144 else if (! strncmp (argv[i], "--sysroot=", strlen ("--sysroot="))) 4145 { 4146 target_system_root = argv[i] + strlen ("--sysroot="); 4147 target_system_root_changed = 1; 4148 } 4149 else if (argv[i][0] == '+' && argv[i][1] == 'e') 4150 { 4151 /* Compensate for the +e options to the C++ front-end; 4152 they're there simply for cfront call-compatibility. We do 4153 some magic in default_compilers to pass them down properly. 4154 Note we deliberately start at the `+' here, to avoid passing 4155 -e0 or -e1 down into the linker. */ 4156 switches[n_switches].part1 = &argv[i][0]; 4157 switches[n_switches].args = 0; 4158 switches[n_switches].live_cond = SWITCH_OK; 4159 switches[n_switches].validated = 0; 4160 n_switches++; 4161 } 4162 else if (strncmp (argv[i], "-Wl,", 4) == 0) 4163 { 4164 int prev, j; 4165 /* Split the argument at commas. */ 4166 prev = 4; 4167 for (j = 4; argv[i][j]; j++) 4168 if (argv[i][j] == ',') 4169 { 4170 infiles[n_infiles].language = "*"; 4171 infiles[n_infiles++].name 4172 = save_string (argv[i] + prev, j - prev); 4173 prev = j + 1; 4174 } 4175 /* Record the part after the last comma. */ 4176 infiles[n_infiles].language = "*"; 4177 infiles[n_infiles++].name = argv[i] + prev; 4178 } 4179 else if (strcmp (argv[i], "-Xlinker") == 0) 4180 { 4181 infiles[n_infiles].language = "*"; 4182 infiles[n_infiles++].name = argv[++i]; 4183 } 4184 /* Xassembler and Xpreprocessor were already handled in the first argv 4185 scan, so all we need to do here is ignore them and their argument. */ 4186 else if (strcmp (argv[i], "-Xassembler") == 0) 4187 i++; 4188 else if (strcmp (argv[i], "-Xpreprocessor") == 0) 4189 i++; 4190 else if (strcmp (argv[i], "-l") == 0) 4191 { /* POSIX allows separation of -l and the lib arg; 4192 canonicalize by concatenating -l with its arg */ 4193 infiles[n_infiles].language = "*"; 4194 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL); 4195 } 4196 else if (strncmp (argv[i], "-l", 2) == 0) 4197 { 4198 infiles[n_infiles].language = "*"; 4199 infiles[n_infiles++].name = argv[i]; 4200 } 4201 else if (strcmp (argv[i], "-specs") == 0) 4202 i++; 4203 else if (strncmp (argv[i], "-specs=", 7) == 0) 4204 ; 4205 else if (strcmp (argv[i], "-time") == 0) 4206 ; 4207 else if (strcmp (argv[i], "-###") == 0) 4208 ; 4209 else if (argv[i][0] == '-' && argv[i][1] != 0) 4210 { 4211 const char *p = &argv[i][1]; 4212 int c = *p; 4213 4214 if (c == 'x') 4215 { 4216 if (p[1] == 0 && i + 1 == argc) 4217 fatal ("argument to '-x' is missing"); 4218 if (p[1] == 0) 4219 spec_lang = argv[++i]; 4220 else 4221 spec_lang = p + 1; 4222 if (! strcmp (spec_lang, "none")) 4223 /* Suppress the warning if -xnone comes after the last input 4224 file, because alternate command interfaces like g++ might 4225 find it useful to place -xnone after each input file. */ 4226 spec_lang = 0; 4227 else 4228 last_language_n_infiles = n_infiles; 4229 continue; 4230 } 4231 switches[n_switches].part1 = p; 4232 /* Deal with option arguments in separate argv elements. */ 4233 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0)) 4234 || WORD_SWITCH_TAKES_ARG (p)) 4235 { 4236 int j = 0; 4237 int n_args = WORD_SWITCH_TAKES_ARG (p); 4238 4239 if (n_args == 0) 4240 { 4241 /* Count only the option arguments in separate argv elements. */ 4242 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0); 4243 } 4244 if (i + n_args >= argc) 4245 fatal ("argument to '-%s' is missing", p); 4246 switches[n_switches].args 4247 = XNEWVEC (const char *, n_args + 1); 4248 while (j < n_args) 4249 switches[n_switches].args[j++] = argv[++i]; 4250 /* Null-terminate the vector. */ 4251 switches[n_switches].args[j] = 0; 4252 } 4253 else if (strchr (switches_need_spaces, c)) 4254 { 4255 /* On some systems, ld cannot handle some options without 4256 a space. So split the option from its argument. */ 4257 char *part1 = XNEWVEC (char, 2); 4258 part1[0] = c; 4259 part1[1] = '\0'; 4260 4261 switches[n_switches].part1 = part1; 4262 switches[n_switches].args = XNEWVEC (const char *, 2); 4263 switches[n_switches].args[0] = xstrdup (p+1); 4264 switches[n_switches].args[1] = 0; 4265 } 4266 else 4267 switches[n_switches].args = 0; 4268 4269 switches[n_switches].live_cond = SWITCH_OK; 4270 switches[n_switches].validated = 0; 4271 switches[n_switches].ordering = 0; 4272 /* These are always valid, since gcc.c itself understands them. */ 4273 if (!strcmp (p, "save-temps") 4274 || !strcmp (p, "static-libgcc") 4275 || !strcmp (p, "shared-libgcc") 4276 || !strcmp (p, "pipe")) 4277 switches[n_switches].validated = 1; 4278 else 4279 { 4280 char ch = switches[n_switches].part1[0]; 4281 if (ch == 'B') 4282 switches[n_switches].validated = 1; 4283 } 4284 n_switches++; 4285 } 4286 else 4287 { 4288#ifdef HAVE_TARGET_OBJECT_SUFFIX 4289 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK)); 4290#endif 4291 4292 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0) 4293 { 4294 perror_with_name (argv[i]); 4295 error_count++; 4296 } 4297 else 4298 { 4299 infiles[n_infiles].language = spec_lang; 4300 infiles[n_infiles++].name = argv[i]; 4301 } 4302 } 4303 } 4304 4305 if (n_infiles == last_language_n_infiles && spec_lang != 0) 4306 error ("warning: '-x %s' after last input file has no effect", spec_lang); 4307 4308 /* Ensure we only invoke each subprocess once. */ 4309 if (target_help_flag || print_help_list) 4310 { 4311 n_infiles = 1; 4312 4313 /* Create a dummy input file, so that we can pass --target-help on to 4314 the various sub-processes. */ 4315 infiles[0].language = "c"; 4316 infiles[0].name = "help-dummy"; 4317 4318 if (target_help_flag) 4319 { 4320 switches[n_switches].part1 = "--target-help"; 4321 switches[n_switches].args = 0; 4322 switches[n_switches].live_cond = SWITCH_OK; 4323 switches[n_switches].validated = 0; 4324 4325 n_switches++; 4326 } 4327 4328 if (print_help_list) 4329 { 4330 switches[n_switches].part1 = "--help"; 4331 switches[n_switches].args = 0; 4332 switches[n_switches].live_cond = SWITCH_OK; 4333 switches[n_switches].validated = 0; 4334 4335 n_switches++; 4336 } 4337 } 4338 4339 switches[n_switches].part1 = 0; 4340 infiles[n_infiles].name = 0; 4341} 4342 4343/* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS 4344 and place that in the environment. */ 4345 4346static void 4347set_collect_gcc_options (void) 4348{ 4349 int i; 4350 int first_time; 4351 4352 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to 4353 the compiler. */ 4354 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=", 4355 sizeof ("COLLECT_GCC_OPTIONS=") - 1); 4356 4357 first_time = TRUE; 4358 for (i = 0; (int) i < n_switches; i++) 4359 { 4360 const char *const *args; 4361 const char *p, *q; 4362 if (!first_time) 4363 obstack_grow (&collect_obstack, " ", 1); 4364 4365 first_time = FALSE; 4366 4367 /* Ignore elided switches. */ 4368 if (switches[i].live_cond == SWITCH_IGNORE) 4369 continue; 4370 4371 obstack_grow (&collect_obstack, "'-", 2); 4372 q = switches[i].part1; 4373 while ((p = strchr (q, '\''))) 4374 { 4375 obstack_grow (&collect_obstack, q, p - q); 4376 obstack_grow (&collect_obstack, "'\\''", 4); 4377 q = ++p; 4378 } 4379 obstack_grow (&collect_obstack, q, strlen (q)); 4380 obstack_grow (&collect_obstack, "'", 1); 4381 4382 for (args = switches[i].args; args && *args; args++) 4383 { 4384 obstack_grow (&collect_obstack, " '", 2); 4385 q = *args; 4386 while ((p = strchr (q, '\''))) 4387 { 4388 obstack_grow (&collect_obstack, q, p - q); 4389 obstack_grow (&collect_obstack, "'\\''", 4); 4390 q = ++p; 4391 } 4392 obstack_grow (&collect_obstack, q, strlen (q)); 4393 obstack_grow (&collect_obstack, "'", 1); 4394 } 4395 } 4396 obstack_grow (&collect_obstack, "\0", 1); 4397 putenv (XOBFINISH (&collect_obstack, char *)); 4398} 4399 4400/* Process a spec string, accumulating and running commands. */ 4401 4402/* These variables describe the input file name. 4403 input_file_number is the index on outfiles of this file, 4404 so that the output file name can be stored for later use by %o. 4405 input_basename is the start of the part of the input file 4406 sans all directory names, and basename_length is the number 4407 of characters starting there excluding the suffix .c or whatever. */ 4408 4409static const char *input_filename; 4410static int input_file_number; 4411size_t input_filename_length; 4412static int basename_length; 4413static int suffixed_basename_length; 4414static const char *input_basename; 4415static const char *input_suffix; 4416#ifndef HOST_LACKS_INODE_NUMBERS 4417static struct stat input_stat; 4418#endif 4419static int input_stat_set; 4420 4421/* The compiler used to process the current input file. */ 4422static struct compiler *input_file_compiler; 4423 4424/* These are variables used within do_spec and do_spec_1. */ 4425 4426/* Nonzero if an arg has been started and not yet terminated 4427 (with space, tab or newline). */ 4428static int arg_going; 4429 4430/* Nonzero means %d or %g has been seen; the next arg to be terminated 4431 is a temporary file name. */ 4432static int delete_this_arg; 4433 4434/* Nonzero means %w has been seen; the next arg to be terminated 4435 is the output file name of this compilation. */ 4436static int this_is_output_file; 4437 4438/* Nonzero means %s has been seen; the next arg to be terminated 4439 is the name of a library file and we should try the standard 4440 search dirs for it. */ 4441static int this_is_library_file; 4442 4443/* Nonzero means that the input of this command is coming from a pipe. */ 4444static int input_from_pipe; 4445 4446/* Nonnull means substitute this for any suffix when outputting a switches 4447 arguments. */ 4448static const char *suffix_subst; 4449 4450/* Process the spec SPEC and run the commands specified therein. 4451 Returns 0 if the spec is successfully processed; -1 if failed. */ 4452 4453int 4454do_spec (const char *spec) 4455{ 4456 int value; 4457 4458 value = do_spec_2 (spec); 4459 4460 /* Force out any unfinished command. 4461 If -pipe, this forces out the last command if it ended in `|'. */ 4462 if (value == 0) 4463 { 4464 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|")) 4465 argbuf_index--; 4466 4467 set_collect_gcc_options (); 4468 4469 if (argbuf_index > 0) 4470 value = execute (); 4471 } 4472 4473 return value; 4474} 4475 4476static int 4477do_spec_2 (const char *spec) 4478{ 4479 const char *string; 4480 int result; 4481 4482 clear_args (); 4483 arg_going = 0; 4484 delete_this_arg = 0; 4485 this_is_output_file = 0; 4486 this_is_library_file = 0; 4487 input_from_pipe = 0; 4488 suffix_subst = NULL; 4489 4490 result = do_spec_1 (spec, 0, NULL); 4491 4492 /* End any pending argument. */ 4493 if (arg_going) 4494 { 4495 obstack_1grow (&obstack, 0); 4496 string = XOBFINISH (&obstack, const char *); 4497 if (this_is_library_file) 4498 string = find_file (string); 4499 store_arg (string, delete_this_arg, this_is_output_file); 4500 if (this_is_output_file) 4501 outfiles[input_file_number] = string; 4502 arg_going = 0; 4503 } 4504 4505 return result; 4506} 4507 4508 4509/* Process the given spec string and add any new options to the end 4510 of the switches/n_switches array. */ 4511 4512static void 4513do_option_spec (const char *name, const char *spec) 4514{ 4515 unsigned int i, value_count, value_len; 4516 const char *p, *q, *value; 4517 char *tmp_spec, *tmp_spec_p; 4518 4519 if (configure_default_options[0].name == NULL) 4520 return; 4521 4522 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++) 4523 if (strcmp (configure_default_options[i].name, name) == 0) 4524 break; 4525 if (i == ARRAY_SIZE (configure_default_options)) 4526 return; 4527 4528 value = configure_default_options[i].value; 4529 value_len = strlen (value); 4530 4531 /* Compute the size of the final spec. */ 4532 value_count = 0; 4533 p = spec; 4534 while ((p = strstr (p, "%(VALUE)")) != NULL) 4535 { 4536 p ++; 4537 value_count ++; 4538 } 4539 4540 /* Replace each %(VALUE) by the specified value. */ 4541 tmp_spec = alloca (strlen (spec) + 1 4542 + value_count * (value_len - strlen ("%(VALUE)"))); 4543 tmp_spec_p = tmp_spec; 4544 q = spec; 4545 while ((p = strstr (q, "%(VALUE)")) != NULL) 4546 { 4547 memcpy (tmp_spec_p, q, p - q); 4548 tmp_spec_p = tmp_spec_p + (p - q); 4549 memcpy (tmp_spec_p, value, value_len); 4550 tmp_spec_p += value_len; 4551 q = p + strlen ("%(VALUE)"); 4552 } 4553 strcpy (tmp_spec_p, q); 4554 4555 do_self_spec (tmp_spec); 4556} 4557 4558/* Process the given spec string and add any new options to the end 4559 of the switches/n_switches array. */ 4560 4561static void 4562do_self_spec (const char *spec) 4563{ 4564 do_spec_2 (spec); 4565 do_spec_1 (" ", 0, NULL); 4566 4567 if (argbuf_index > 0) 4568 { 4569 int i, first; 4570 4571 first = n_switches; 4572 n_switches += argbuf_index; 4573 switches = xrealloc (switches, 4574 sizeof (struct switchstr) * (n_switches + 1)); 4575 4576 switches[n_switches] = switches[first]; 4577 for (i = 0; i < argbuf_index; i++) 4578 { 4579 struct switchstr *sw; 4580 4581 /* Each switch should start with '-'. */ 4582 if (argbuf[i][0] != '-') 4583 fatal ("switch '%s' does not start with '-'", argbuf[i]); 4584 4585 sw = &switches[i + first]; 4586 sw->part1 = &argbuf[i][1]; 4587 sw->args = 0; 4588 sw->live_cond = SWITCH_OK; 4589 sw->validated = 0; 4590 sw->ordering = 0; 4591 } 4592 } 4593} 4594 4595/* Callback for processing %D and %I specs. */ 4596 4597struct spec_path_info { 4598 const char *option; 4599 const char *append; 4600 size_t append_len; 4601 bool omit_relative; 4602 bool separate_options; 4603}; 4604 4605static void * 4606spec_path (char *path, void *data) 4607{ 4608 struct spec_path_info *info = data; 4609 size_t len = 0; 4610 char save = 0; 4611 4612 if (info->omit_relative && !IS_ABSOLUTE_PATH (path)) 4613 return NULL; 4614 4615 if (info->append_len != 0) 4616 { 4617 len = strlen (path); 4618 memcpy (path + len, info->append, info->append_len + 1); 4619 } 4620 4621 if (!is_directory (path, true)) 4622 return NULL; 4623 4624 do_spec_1 (info->option, 1, NULL); 4625 if (info->separate_options) 4626 do_spec_1 (" ", 0, NULL); 4627 4628 if (info->append_len == 0) 4629 { 4630 len = strlen (path); 4631 save = path[len - 1]; 4632 if (IS_DIR_SEPARATOR (path[len - 1])) 4633 path[len - 1] = '\0'; 4634 } 4635 4636 do_spec_1 (path, 1, NULL); 4637 do_spec_1 (" ", 0, NULL); 4638 4639 /* Must not damage the original path. */ 4640 if (info->append_len == 0) 4641 path[len - 1] = save; 4642 4643 return NULL; 4644} 4645 4646/* Process the sub-spec SPEC as a portion of a larger spec. 4647 This is like processing a whole spec except that we do 4648 not initialize at the beginning and we do not supply a 4649 newline by default at the end. 4650 INSWITCH nonzero means don't process %-sequences in SPEC; 4651 in this case, % is treated as an ordinary character. 4652 This is used while substituting switches. 4653 INSWITCH nonzero also causes SPC not to terminate an argument. 4654 4655 Value is zero unless a line was finished 4656 and the command on that line reported an error. */ 4657 4658static int 4659do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part) 4660{ 4661 const char *p = spec; 4662 int c; 4663 int i; 4664 const char *string; 4665 int value; 4666 4667 while ((c = *p++)) 4668 /* If substituting a switch, treat all chars like letters. 4669 Otherwise, NL, SPC, TAB and % are special. */ 4670 switch (inswitch ? 'a' : c) 4671 { 4672 case '\n': 4673 /* End of line: finish any pending argument, 4674 then run the pending command if one has been started. */ 4675 if (arg_going) 4676 { 4677 obstack_1grow (&obstack, 0); 4678 string = XOBFINISH (&obstack, const char *); 4679 if (this_is_library_file) 4680 string = find_file (string); 4681 store_arg (string, delete_this_arg, this_is_output_file); 4682 if (this_is_output_file) 4683 outfiles[input_file_number] = string; 4684 } 4685 arg_going = 0; 4686 4687 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|")) 4688 { 4689 /* A `|' before the newline means use a pipe here, 4690 but only if -pipe was specified. 4691 Otherwise, execute now and don't pass the `|' as an arg. */ 4692 if (use_pipes) 4693 { 4694 input_from_pipe = 1; 4695 break; 4696 } 4697 else 4698 argbuf_index--; 4699 } 4700 4701 set_collect_gcc_options (); 4702 4703 if (argbuf_index > 0) 4704 { 4705 value = execute (); 4706 if (value) 4707 return value; 4708 } 4709 /* Reinitialize for a new command, and for a new argument. */ 4710 clear_args (); 4711 arg_going = 0; 4712 delete_this_arg = 0; 4713 this_is_output_file = 0; 4714 this_is_library_file = 0; 4715 input_from_pipe = 0; 4716 break; 4717 4718 case '|': 4719 /* End any pending argument. */ 4720 if (arg_going) 4721 { 4722 obstack_1grow (&obstack, 0); 4723 string = XOBFINISH (&obstack, const char *); 4724 if (this_is_library_file) 4725 string = find_file (string); 4726 store_arg (string, delete_this_arg, this_is_output_file); 4727 if (this_is_output_file) 4728 outfiles[input_file_number] = string; 4729 } 4730 4731 /* Use pipe */ 4732 obstack_1grow (&obstack, c); 4733 arg_going = 1; 4734 break; 4735 4736 case '\t': 4737 case ' ': 4738 /* Space or tab ends an argument if one is pending. */ 4739 if (arg_going) 4740 { 4741 obstack_1grow (&obstack, 0); 4742 string = XOBFINISH (&obstack, const char *); 4743 if (this_is_library_file) 4744 string = find_file (string); 4745 store_arg (string, delete_this_arg, this_is_output_file); 4746 if (this_is_output_file) 4747 outfiles[input_file_number] = string; 4748 } 4749 /* Reinitialize for a new argument. */ 4750 arg_going = 0; 4751 delete_this_arg = 0; 4752 this_is_output_file = 0; 4753 this_is_library_file = 0; 4754 break; 4755 4756 case '%': 4757 switch (c = *p++) 4758 { 4759 case 0: 4760 fatal ("spec '%s' invalid", spec); 4761 4762 case 'b': 4763 obstack_grow (&obstack, input_basename, basename_length); 4764 arg_going = 1; 4765 break; 4766 4767 case 'B': 4768 obstack_grow (&obstack, input_basename, suffixed_basename_length); 4769 arg_going = 1; 4770 break; 4771 4772 case 'd': 4773 delete_this_arg = 2; 4774 break; 4775 4776 /* Dump out the directories specified with LIBRARY_PATH, 4777 followed by the absolute directories 4778 that we search for startfiles. */ 4779 case 'D': 4780 { 4781 struct spec_path_info info; 4782 4783 info.option = "-L"; 4784 info.append_len = 0; 4785#ifdef RELATIVE_PREFIX_NOT_LINKDIR 4786 /* Used on systems which record the specified -L dirs 4787 and use them to search for dynamic linking. 4788 Relative directories always come from -B, 4789 and it is better not to use them for searching 4790 at run time. In particular, stage1 loses. */ 4791 info.omit_relative = true; 4792#else 4793 info.omit_relative = false; 4794#endif 4795 info.separate_options = false; 4796 4797 for_each_path (&startfile_prefixes, true, 0, spec_path, &info); 4798 } 4799 break; 4800 4801 case 'e': 4802 /* %efoo means report an error with `foo' as error message 4803 and don't execute any more commands for this file. */ 4804 { 4805 const char *q = p; 4806 char *buf; 4807 while (*p != 0 && *p != '\n') 4808 p++; 4809 buf = alloca (p - q + 1); 4810 strncpy (buf, q, p - q); 4811 buf[p - q] = 0; 4812 error ("%s", buf); 4813 return -1; 4814 } 4815 break; 4816 case 'n': 4817 /* %nfoo means report a notice with `foo' on stderr. */ 4818 { 4819 const char *q = p; 4820 char *buf; 4821 while (*p != 0 && *p != '\n') 4822 p++; 4823 buf = alloca (p - q + 1); 4824 strncpy (buf, q, p - q); 4825 buf[p - q] = 0; 4826 notice ("%s\n", buf); 4827 if (*p) 4828 p++; 4829 } 4830 break; 4831 4832 case 'j': 4833 { 4834 struct stat st; 4835 4836 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is 4837 defined, and it is not a directory, and it is 4838 writable, use it. Otherwise, treat this like any 4839 other temporary file. */ 4840 4841 if ((!save_temps_flag) 4842 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode)) 4843 && (access (HOST_BIT_BUCKET, W_OK) == 0)) 4844 { 4845 obstack_grow (&obstack, HOST_BIT_BUCKET, 4846 strlen (HOST_BIT_BUCKET)); 4847 delete_this_arg = 0; 4848 arg_going = 1; 4849 break; 4850 } 4851 } 4852 goto create_temp_file; 4853 case '|': 4854 if (use_pipes) 4855 { 4856 obstack_1grow (&obstack, '-'); 4857 delete_this_arg = 0; 4858 arg_going = 1; 4859 4860 /* consume suffix */ 4861 while (*p == '.' || ISALNUM ((unsigned char) *p)) 4862 p++; 4863 if (p[0] == '%' && p[1] == 'O') 4864 p += 2; 4865 4866 break; 4867 } 4868 goto create_temp_file; 4869 case 'm': 4870 if (use_pipes) 4871 { 4872 /* consume suffix */ 4873 while (*p == '.' || ISALNUM ((unsigned char) *p)) 4874 p++; 4875 if (p[0] == '%' && p[1] == 'O') 4876 p += 2; 4877 4878 break; 4879 } 4880 goto create_temp_file; 4881 case 'g': 4882 case 'u': 4883 case 'U': 4884 create_temp_file: 4885 { 4886 struct temp_name *t; 4887 int suffix_length; 4888 const char *suffix = p; 4889 char *saved_suffix = NULL; 4890 4891 while (*p == '.' || ISALNUM ((unsigned char) *p)) 4892 p++; 4893 suffix_length = p - suffix; 4894 if (p[0] == '%' && p[1] == 'O') 4895 { 4896 p += 2; 4897 /* We don't support extra suffix characters after %O. */ 4898 if (*p == '.' || ISALNUM ((unsigned char) *p)) 4899 fatal ("spec '%s' has invalid '%%0%c'", spec, *p); 4900 if (suffix_length == 0) 4901 suffix = TARGET_OBJECT_SUFFIX; 4902 else 4903 { 4904 saved_suffix 4905 = XNEWVEC (char, suffix_length 4906 + strlen (TARGET_OBJECT_SUFFIX)); 4907 strncpy (saved_suffix, suffix, suffix_length); 4908 strcpy (saved_suffix + suffix_length, 4909 TARGET_OBJECT_SUFFIX); 4910 } 4911 suffix_length += strlen (TARGET_OBJECT_SUFFIX); 4912 } 4913 4914 /* If the input_filename has the same suffix specified 4915 for the %g, %u, or %U, and -save-temps is specified, 4916 we could end up using that file as an intermediate 4917 thus clobbering the user's source file (.e.g., 4918 gcc -save-temps foo.s would clobber foo.s with the 4919 output of cpp0). So check for this condition and 4920 generate a temp file as the intermediate. */ 4921 4922 if (save_temps_flag) 4923 { 4924 temp_filename_length = basename_length + suffix_length; 4925 temp_filename = alloca (temp_filename_length + 1); 4926 strncpy ((char *) temp_filename, input_basename, basename_length); 4927 strncpy ((char *) temp_filename + basename_length, suffix, 4928 suffix_length); 4929 *((char *) temp_filename + temp_filename_length) = '\0'; 4930 if (strcmp (temp_filename, input_filename) != 0) 4931 { 4932#ifndef HOST_LACKS_INODE_NUMBERS 4933 struct stat st_temp; 4934 4935 /* Note, set_input() resets input_stat_set to 0. */ 4936 if (input_stat_set == 0) 4937 { 4938 input_stat_set = stat (input_filename, &input_stat); 4939 if (input_stat_set >= 0) 4940 input_stat_set = 1; 4941 } 4942 4943 /* If we have the stat for the input_filename 4944 and we can do the stat for the temp_filename 4945 then the they could still refer to the same 4946 file if st_dev/st_ino's are the same. */ 4947 if (input_stat_set != 1 4948 || stat (temp_filename, &st_temp) < 0 4949 || input_stat.st_dev != st_temp.st_dev 4950 || input_stat.st_ino != st_temp.st_ino) 4951#else 4952 /* Just compare canonical pathnames. */ 4953 char* input_realname = lrealpath (input_filename); 4954 char* temp_realname = lrealpath (temp_filename); 4955 bool files_differ = strcmp (input_realname, temp_realname); 4956 free (input_realname); 4957 free (temp_realname); 4958 if (files_differ) 4959#endif 4960 { 4961 temp_filename = save_string (temp_filename, 4962 temp_filename_length + 1); 4963 obstack_grow (&obstack, temp_filename, 4964 temp_filename_length); 4965 arg_going = 1; 4966 delete_this_arg = 0; 4967 break; 4968 } 4969 } 4970 } 4971 4972 /* See if we already have an association of %g/%u/%U and 4973 suffix. */ 4974 for (t = temp_names; t; t = t->next) 4975 if (t->length == suffix_length 4976 && strncmp (t->suffix, suffix, suffix_length) == 0 4977 && t->unique == (c == 'u' || c == 'U' || c == 'j')) 4978 break; 4979 4980 /* Make a new association if needed. %u and %j 4981 require one. */ 4982 if (t == 0 || c == 'u' || c == 'j') 4983 { 4984 if (t == 0) 4985 { 4986 t = xmalloc (sizeof (struct temp_name)); 4987 t->next = temp_names; 4988 temp_names = t; 4989 } 4990 t->length = suffix_length; 4991 if (saved_suffix) 4992 { 4993 t->suffix = saved_suffix; 4994 saved_suffix = NULL; 4995 } 4996 else 4997 t->suffix = save_string (suffix, suffix_length); 4998 t->unique = (c == 'u' || c == 'U' || c == 'j'); 4999 temp_filename = make_temp_file (t->suffix); 5000 temp_filename_length = strlen (temp_filename); 5001 t->filename = temp_filename; 5002 t->filename_length = temp_filename_length; 5003 } 5004 5005 if (saved_suffix) 5006 free (saved_suffix); 5007 5008 obstack_grow (&obstack, t->filename, t->filename_length); 5009 delete_this_arg = 1; 5010 } 5011 arg_going = 1; 5012 break; 5013 5014 case 'i': 5015 if (combine_inputs) 5016 { 5017 for (i = 0; (int) i < n_infiles; i++) 5018 if ((!infiles[i].language) || (infiles[i].language[0] != '*')) 5019 if (infiles[i].incompiler == input_file_compiler) 5020 { 5021 store_arg (infiles[i].name, 0, 0); 5022 infiles[i].compiled = true; 5023 } 5024 } 5025 else 5026 { 5027 obstack_grow (&obstack, input_filename, input_filename_length); 5028 arg_going = 1; 5029 } 5030 break; 5031 5032 case 'I': 5033 { 5034 struct spec_path_info info; 5035 5036 if (multilib_dir) 5037 { 5038 do_spec_1 ("-imultilib", 1, NULL); 5039 /* Make this a separate argument. */ 5040 do_spec_1 (" ", 0, NULL); 5041 do_spec_1 (multilib_dir, 1, NULL); 5042 do_spec_1 (" ", 0, NULL); 5043 } 5044 5045 if (gcc_exec_prefix) 5046 { 5047 do_spec_1 ("-iprefix", 1, NULL); 5048 /* Make this a separate argument. */ 5049 do_spec_1 (" ", 0, NULL); 5050 do_spec_1 (gcc_exec_prefix, 1, NULL); 5051 do_spec_1 (" ", 0, NULL); 5052 } 5053 5054 if (target_system_root_changed || 5055 (target_system_root && target_sysroot_hdrs_suffix)) 5056 { 5057 do_spec_1 ("-isysroot", 1, NULL); 5058 /* Make this a separate argument. */ 5059 do_spec_1 (" ", 0, NULL); 5060 do_spec_1 (target_system_root, 1, NULL); 5061 if (target_sysroot_hdrs_suffix) 5062 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL); 5063 do_spec_1 (" ", 0, NULL); 5064 } 5065 5066 info.option = "-isystem"; 5067 info.append = "include"; 5068 info.append_len = strlen (info.append); 5069 info.omit_relative = false; 5070 info.separate_options = true; 5071 5072 for_each_path (&include_prefixes, false, info.append_len, 5073 spec_path, &info); 5074 } 5075 break; 5076 5077 case 'o': 5078 { 5079 int max = n_infiles; 5080 max += lang_specific_extra_outfiles; 5081 5082 for (i = 0; i < max; i++) 5083 if (outfiles[i]) 5084 store_arg (outfiles[i], 0, 0); 5085 break; 5086 } 5087 5088 case 'O': 5089 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX)); 5090 arg_going = 1; 5091 break; 5092 5093 case 's': 5094 this_is_library_file = 1; 5095 break; 5096 5097 case 'V': 5098 outfiles[input_file_number] = NULL; 5099 break; 5100 5101 case 'w': 5102 this_is_output_file = 1; 5103 break; 5104 5105 case 'W': 5106 { 5107 int cur_index = argbuf_index; 5108 /* Handle the {...} following the %W. */ 5109 if (*p != '{') 5110 fatal ("spec '%s' has invalid '%%W%c", spec, *p); 5111 p = handle_braces (p + 1); 5112 if (p == 0) 5113 return -1; 5114 /* End any pending argument. */ 5115 if (arg_going) 5116 { 5117 obstack_1grow (&obstack, 0); 5118 string = XOBFINISH (&obstack, const char *); 5119 if (this_is_library_file) 5120 string = find_file (string); 5121 store_arg (string, delete_this_arg, this_is_output_file); 5122 if (this_is_output_file) 5123 outfiles[input_file_number] = string; 5124 arg_going = 0; 5125 } 5126 /* If any args were output, mark the last one for deletion 5127 on failure. */ 5128 if (argbuf_index != cur_index) 5129 record_temp_file (argbuf[argbuf_index - 1], 0, 1); 5130 break; 5131 } 5132 5133 /* %x{OPTION} records OPTION for %X to output. */ 5134 case 'x': 5135 { 5136 const char *p1 = p; 5137 char *string; 5138 5139 /* Skip past the option value and make a copy. */ 5140 if (*p != '{') 5141 fatal ("spec '%s' has invalid '%%x%c'", spec, *p); 5142 while (*p++ != '}') 5143 ; 5144 string = save_string (p1 + 1, p - p1 - 2); 5145 5146 /* See if we already recorded this option. */ 5147 for (i = 0; i < n_linker_options; i++) 5148 if (! strcmp (string, linker_options[i])) 5149 { 5150 free (string); 5151 return 0; 5152 } 5153 5154 /* This option is new; add it. */ 5155 add_linker_option (string, strlen (string)); 5156 } 5157 break; 5158 5159 /* Dump out the options accumulated previously using %x. */ 5160 case 'X': 5161 for (i = 0; i < n_linker_options; i++) 5162 { 5163 do_spec_1 (linker_options[i], 1, NULL); 5164 /* Make each accumulated option a separate argument. */ 5165 do_spec_1 (" ", 0, NULL); 5166 } 5167 break; 5168 5169 /* Dump out the options accumulated previously using -Wa,. */ 5170 case 'Y': 5171 for (i = 0; i < n_assembler_options; i++) 5172 { 5173 do_spec_1 (assembler_options[i], 1, NULL); 5174 /* Make each accumulated option a separate argument. */ 5175 do_spec_1 (" ", 0, NULL); 5176 } 5177 break; 5178 5179 /* Dump out the options accumulated previously using -Wp,. */ 5180 case 'Z': 5181 for (i = 0; i < n_preprocessor_options; i++) 5182 { 5183 do_spec_1 (preprocessor_options[i], 1, NULL); 5184 /* Make each accumulated option a separate argument. */ 5185 do_spec_1 (" ", 0, NULL); 5186 } 5187 break; 5188 5189 /* Here are digits and numbers that just process 5190 a certain constant string as a spec. */ 5191 5192 case '1': 5193 value = do_spec_1 (cc1_spec, 0, NULL); 5194 if (value != 0) 5195 return value; 5196 break; 5197 5198 case '2': 5199 value = do_spec_1 (cc1plus_spec, 0, NULL); 5200 if (value != 0) 5201 return value; 5202 break; 5203 5204 case 'a': 5205 value = do_spec_1 (asm_spec, 0, NULL); 5206 if (value != 0) 5207 return value; 5208 break; 5209 5210 case 'A': 5211 value = do_spec_1 (asm_final_spec, 0, NULL); 5212 if (value != 0) 5213 return value; 5214 break; 5215 5216 case 'C': 5217 { 5218 const char *const spec 5219 = (input_file_compiler->cpp_spec 5220 ? input_file_compiler->cpp_spec 5221 : cpp_spec); 5222 value = do_spec_1 (spec, 0, NULL); 5223 if (value != 0) 5224 return value; 5225 } 5226 break; 5227 5228 case 'E': 5229 value = do_spec_1 (endfile_spec, 0, NULL); 5230 if (value != 0) 5231 return value; 5232 break; 5233 5234 case 'l': 5235 value = do_spec_1 (link_spec, 0, NULL); 5236 if (value != 0) 5237 return value; 5238 break; 5239 5240 case 'L': 5241 value = do_spec_1 (lib_spec, 0, NULL); 5242 if (value != 0) 5243 return value; 5244 break; 5245 5246 case 'G': 5247 value = do_spec_1 (libgcc_spec, 0, NULL); 5248 if (value != 0) 5249 return value; 5250 break; 5251 5252 case 'R': 5253 /* We assume there is a directory 5254 separator at the end of this string. */ 5255 if (target_system_root) 5256 { 5257 obstack_grow (&obstack, target_system_root, 5258 strlen (target_system_root)); 5259 if (target_sysroot_suffix) 5260 obstack_grow (&obstack, target_sysroot_suffix, 5261 strlen (target_sysroot_suffix)); 5262 } 5263 break; 5264 5265 case 'S': 5266 value = do_spec_1 (startfile_spec, 0, NULL); 5267 if (value != 0) 5268 return value; 5269 break; 5270 5271 /* Here we define characters other than letters and digits. */ 5272 5273 case '{': 5274 p = handle_braces (p); 5275 if (p == 0) 5276 return -1; 5277 break; 5278 5279 case ':': 5280 p = handle_spec_function (p); 5281 if (p == 0) 5282 return -1; 5283 break; 5284 5285 case '%': 5286 obstack_1grow (&obstack, '%'); 5287 break; 5288 5289 case '.': 5290 { 5291 unsigned len = 0; 5292 5293 while (p[len] && p[len] != ' ' && p[len] != '%') 5294 len++; 5295 suffix_subst = save_string (p - 1, len + 1); 5296 p += len; 5297 } 5298 break; 5299 5300 /* Henceforth ignore the option(s) matching the pattern 5301 after the %<. */ 5302 case '<': 5303 { 5304 unsigned len = 0; 5305 int have_wildcard = 0; 5306 int i; 5307 5308 while (p[len] && p[len] != ' ' && p[len] != '\t') 5309 len++; 5310 5311 if (p[len-1] == '*') 5312 have_wildcard = 1; 5313 5314 for (i = 0; i < n_switches; i++) 5315 if (!strncmp (switches[i].part1, p, len - have_wildcard) 5316 && (have_wildcard || switches[i].part1[len] == '\0')) 5317 { 5318 switches[i].live_cond = SWITCH_IGNORE; 5319 switches[i].validated = 1; 5320 } 5321 5322 p += len; 5323 } 5324 break; 5325 5326 case '*': 5327 if (soft_matched_part) 5328 { 5329 do_spec_1 (soft_matched_part, 1, NULL); 5330 do_spec_1 (" ", 0, NULL); 5331 } 5332 else 5333 /* Catch the case where a spec string contains something like 5334 '%{foo:%*}'. i.e. there is no * in the pattern on the left 5335 hand side of the :. */ 5336 error ("spec failure: '%%*' has not been initialized by pattern match"); 5337 break; 5338 5339 /* Process a string found as the value of a spec given by name. 5340 This feature allows individual machine descriptions 5341 to add and use their own specs. 5342 %[...] modifies -D options the way %P does; 5343 %(...) uses the spec unmodified. */ 5344 case '[': 5345 error ("warning: use of obsolete %%[ operator in specs"); 5346 case '(': 5347 { 5348 const char *name = p; 5349 struct spec_list *sl; 5350 int len; 5351 5352 /* The string after the S/P is the name of a spec that is to be 5353 processed. */ 5354 while (*p && *p != ')' && *p != ']') 5355 p++; 5356 5357 /* See if it's in the list. */ 5358 for (len = p - name, sl = specs; sl; sl = sl->next) 5359 if (sl->name_len == len && !strncmp (sl->name, name, len)) 5360 { 5361 name = *(sl->ptr_spec); 5362#ifdef DEBUG_SPECS 5363 notice ("Processing spec %c%s%c, which is '%s'\n", 5364 c, sl->name, (c == '(') ? ')' : ']', name); 5365#endif 5366 break; 5367 } 5368 5369 if (sl) 5370 { 5371 if (c == '(') 5372 { 5373 value = do_spec_1 (name, 0, NULL); 5374 if (value != 0) 5375 return value; 5376 } 5377 else 5378 { 5379 char *x = alloca (strlen (name) * 2 + 1); 5380 char *buf = x; 5381 const char *y = name; 5382 int flag = 0; 5383 5384 /* Copy all of NAME into BUF, but put __ after 5385 every -D and at the end of each arg. */ 5386 while (1) 5387 { 5388 if (! strncmp (y, "-D", 2)) 5389 { 5390 *x++ = '-'; 5391 *x++ = 'D'; 5392 *x++ = '_'; 5393 *x++ = '_'; 5394 y += 2; 5395 flag = 1; 5396 continue; 5397 } 5398 else if (flag 5399 && (*y == ' ' || *y == '\t' || *y == '=' 5400 || *y == '}' || *y == 0)) 5401 { 5402 *x++ = '_'; 5403 *x++ = '_'; 5404 flag = 0; 5405 } 5406 if (*y == 0) 5407 break; 5408 else 5409 *x++ = *y++; 5410 } 5411 *x = 0; 5412 5413 value = do_spec_1 (buf, 0, NULL); 5414 if (value != 0) 5415 return value; 5416 } 5417 } 5418 5419 /* Discard the closing paren or bracket. */ 5420 if (*p) 5421 p++; 5422 } 5423 break; 5424 5425 default: 5426 error ("spec failure: unrecognized spec option '%c'", c); 5427 break; 5428 } 5429 break; 5430 5431 case '\\': 5432 /* Backslash: treat next character as ordinary. */ 5433 c = *p++; 5434 5435 /* Fall through. */ 5436 default: 5437 /* Ordinary character: put it into the current argument. */ 5438 obstack_1grow (&obstack, c); 5439 arg_going = 1; 5440 } 5441 5442 /* End of string. If we are processing a spec function, we need to 5443 end any pending argument. */ 5444 if (processing_spec_function && arg_going) 5445 { 5446 obstack_1grow (&obstack, 0); 5447 string = XOBFINISH (&obstack, const char *); 5448 if (this_is_library_file) 5449 string = find_file (string); 5450 store_arg (string, delete_this_arg, this_is_output_file); 5451 if (this_is_output_file) 5452 outfiles[input_file_number] = string; 5453 arg_going = 0; 5454 } 5455 5456 return 0; 5457} 5458 5459/* Look up a spec function. */ 5460 5461static const struct spec_function * 5462lookup_spec_function (const char *name) 5463{ 5464 const struct spec_function *sf; 5465 5466 for (sf = static_spec_functions; sf->name != NULL; sf++) 5467 if (strcmp (sf->name, name) == 0) 5468 return sf; 5469 5470 return NULL; 5471} 5472 5473/* Evaluate a spec function. */ 5474 5475static const char * 5476eval_spec_function (const char *func, const char *args) 5477{ 5478 const struct spec_function *sf; 5479 const char *funcval; 5480 5481 /* Saved spec processing context. */ 5482 int save_argbuf_index; 5483 int save_argbuf_length; 5484 const char **save_argbuf; 5485 5486 int save_arg_going; 5487 int save_delete_this_arg; 5488 int save_this_is_output_file; 5489 int save_this_is_library_file; 5490 int save_input_from_pipe; 5491 const char *save_suffix_subst; 5492 5493 5494 sf = lookup_spec_function (func); 5495 if (sf == NULL) 5496 fatal ("unknown spec function '%s'", func); 5497 5498 /* Push the spec processing context. */ 5499 save_argbuf_index = argbuf_index; 5500 save_argbuf_length = argbuf_length; 5501 save_argbuf = argbuf; 5502 5503 save_arg_going = arg_going; 5504 save_delete_this_arg = delete_this_arg; 5505 save_this_is_output_file = this_is_output_file; 5506 save_this_is_library_file = this_is_library_file; 5507 save_input_from_pipe = input_from_pipe; 5508 save_suffix_subst = suffix_subst; 5509 5510 /* Create a new spec processing context, and build the function 5511 arguments. */ 5512 5513 alloc_args (); 5514 if (do_spec_2 (args) < 0) 5515 fatal ("error in args to spec function '%s'", func); 5516 5517 /* argbuf_index is an index for the next argument to be inserted, and 5518 so contains the count of the args already inserted. */ 5519 5520 funcval = (*sf->func) (argbuf_index, argbuf); 5521 5522 /* Pop the spec processing context. */ 5523 argbuf_index = save_argbuf_index; 5524 argbuf_length = save_argbuf_length; 5525 free (argbuf); 5526 argbuf = save_argbuf; 5527 5528 arg_going = save_arg_going; 5529 delete_this_arg = save_delete_this_arg; 5530 this_is_output_file = save_this_is_output_file; 5531 this_is_library_file = save_this_is_library_file; 5532 input_from_pipe = save_input_from_pipe; 5533 suffix_subst = save_suffix_subst; 5534 5535 return funcval; 5536} 5537 5538/* Handle a spec function call of the form: 5539 5540 %:function(args) 5541 5542 ARGS is processed as a spec in a separate context and split into an 5543 argument vector in the normal fashion. The function returns a string 5544 containing a spec which we then process in the caller's context, or 5545 NULL if no processing is required. */ 5546 5547static const char * 5548handle_spec_function (const char *p) 5549{ 5550 char *func, *args; 5551 const char *endp, *funcval; 5552 int count; 5553 5554 processing_spec_function++; 5555 5556 /* Get the function name. */ 5557 for (endp = p; *endp != '\0'; endp++) 5558 { 5559 if (*endp == '(') /* ) */ 5560 break; 5561 /* Only allow [A-Za-z0-9], -, and _ in function names. */ 5562 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_')) 5563 fatal ("malformed spec function name"); 5564 } 5565 if (*endp != '(') /* ) */ 5566 fatal ("no arguments for spec function"); 5567 func = save_string (p, endp - p); 5568 p = ++endp; 5569 5570 /* Get the arguments. */ 5571 for (count = 0; *endp != '\0'; endp++) 5572 { 5573 /* ( */ 5574 if (*endp == ')') 5575 { 5576 if (count == 0) 5577 break; 5578 count--; 5579 } 5580 else if (*endp == '(') /* ) */ 5581 count++; 5582 } 5583 /* ( */ 5584 if (*endp != ')') 5585 fatal ("malformed spec function arguments"); 5586 args = save_string (p, endp - p); 5587 p = ++endp; 5588 5589 /* p now points to just past the end of the spec function expression. */ 5590 5591 funcval = eval_spec_function (func, args); 5592 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0) 5593 p = NULL; 5594 5595 free (func); 5596 free (args); 5597 5598 processing_spec_function--; 5599 5600 return p; 5601} 5602 5603/* Inline subroutine of handle_braces. Returns true if the current 5604 input suffix matches the atom bracketed by ATOM and END_ATOM. */ 5605static inline bool 5606input_suffix_matches (const char *atom, const char *end_atom) 5607{ 5608 /* We special case the semantics of {.s:...} and {.S:...} and their 5609 negative variants. Instead of testing the input filename suffix, 5610 we test whether the input source file is an assembler file or an 5611 assembler-with-cpp file respectively. This allows us to correctly 5612 handle the -x command line option. */ 5613 5614 if (atom + 1 == end_atom 5615 && input_file_compiler 5616 && input_file_compiler->suffix) 5617 { 5618 if (*atom == 's') 5619 return !strcmp (input_file_compiler->suffix, "@assembler"); 5620 if (*atom == 'S') 5621 return !strcmp (input_file_compiler->suffix, "@assembler-with-cpp"); 5622 } 5623 5624 return (input_suffix 5625 && !strncmp (input_suffix, atom, end_atom - atom) 5626 && input_suffix[end_atom - atom] == '\0'); 5627} 5628 5629/* Subroutine of handle_braces. Returns true if a switch 5630 matching the atom bracketed by ATOM and END_ATOM appeared on the 5631 command line. */ 5632static bool 5633switch_matches (const char *atom, const char *end_atom, int starred) 5634{ 5635 int i; 5636 int len = end_atom - atom; 5637 int plen = starred ? len : -1; 5638 5639 for (i = 0; i < n_switches; i++) 5640 if (!strncmp (switches[i].part1, atom, len) 5641 && (starred || switches[i].part1[len] == '\0') 5642 && check_live_switch (i, plen)) 5643 return true; 5644 5645 return false; 5646} 5647 5648/* Inline subroutine of handle_braces. Mark all of the switches which 5649 match ATOM (extends to END_ATOM; STARRED indicates whether there 5650 was a star after the atom) for later processing. */ 5651static inline void 5652mark_matching_switches (const char *atom, const char *end_atom, int starred) 5653{ 5654 int i; 5655 int len = end_atom - atom; 5656 int plen = starred ? len : -1; 5657 5658 for (i = 0; i < n_switches; i++) 5659 if (!strncmp (switches[i].part1, atom, len) 5660 && (starred || switches[i].part1[len] == '\0') 5661 && check_live_switch (i, plen)) 5662 switches[i].ordering = 1; 5663} 5664 5665/* Inline subroutine of handle_braces. Process all the currently 5666 marked switches through give_switch, and clear the marks. */ 5667static inline void 5668process_marked_switches (void) 5669{ 5670 int i; 5671 5672 for (i = 0; i < n_switches; i++) 5673 if (switches[i].ordering == 1) 5674 { 5675 switches[i].ordering = 0; 5676 give_switch (i, 0); 5677 } 5678} 5679 5680/* Handle a %{ ... } construct. P points just inside the leading {. 5681 Returns a pointer one past the end of the brace block, or 0 5682 if we call do_spec_1 and that returns -1. */ 5683 5684static const char * 5685handle_braces (const char *p) 5686{ 5687 const char *atom, *end_atom; 5688 const char *d_atom = NULL, *d_end_atom = NULL; 5689 const char *orig = p; 5690 5691 bool a_is_suffix; 5692 bool a_is_starred; 5693 bool a_is_negated; 5694 bool a_matched; 5695 5696 bool a_must_be_last = false; 5697 bool ordered_set = false; 5698 bool disjunct_set = false; 5699 bool disj_matched = false; 5700 bool disj_starred = true; 5701 bool n_way_choice = false; 5702 bool n_way_matched = false; 5703 5704#define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0) 5705 5706 do 5707 { 5708 if (a_must_be_last) 5709 goto invalid; 5710 5711 /* Scan one "atom" (S in the description above of %{}, possibly 5712 with !, ., or * modifiers). */ 5713 a_matched = a_is_suffix = a_is_starred = a_is_negated = false; 5714 5715 SKIP_WHITE(); 5716 if (*p == '!') 5717 p++, a_is_negated = true; 5718 5719 SKIP_WHITE(); 5720 if (*p == '.') 5721 p++, a_is_suffix = true; 5722 5723 atom = p; 5724 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '=' 5725 || *p == ',' || *p == '.' || *p == '@') 5726 p++; 5727 end_atom = p; 5728 5729 if (*p == '*') 5730 p++, a_is_starred = 1; 5731 5732 SKIP_WHITE(); 5733 switch (*p) 5734 { 5735 case '&': case '}': 5736 /* Substitute the switch(es) indicated by the current atom. */ 5737 ordered_set = true; 5738 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix 5739 || atom == end_atom) 5740 goto invalid; 5741 5742 mark_matching_switches (atom, end_atom, a_is_starred); 5743 5744 if (*p == '}') 5745 process_marked_switches (); 5746 break; 5747 5748 case '|': case ':': 5749 /* Substitute some text if the current atom appears as a switch 5750 or suffix. */ 5751 disjunct_set = true; 5752 if (ordered_set) 5753 goto invalid; 5754 5755 if (atom == end_atom) 5756 { 5757 if (!n_way_choice || disj_matched || *p == '|' 5758 || a_is_negated || a_is_suffix || a_is_starred) 5759 goto invalid; 5760 5761 /* An empty term may appear as the last choice of an 5762 N-way choice set; it means "otherwise". */ 5763 a_must_be_last = true; 5764 disj_matched = !n_way_matched; 5765 disj_starred = false; 5766 } 5767 else 5768 { 5769 if (a_is_suffix && a_is_starred) 5770 goto invalid; 5771 5772 if (!a_is_starred) 5773 disj_starred = false; 5774 5775 /* Don't bother testing this atom if we already have a 5776 match. */ 5777 if (!disj_matched && !n_way_matched) 5778 { 5779 if (a_is_suffix) 5780 a_matched = input_suffix_matches (atom, end_atom); 5781 else 5782 a_matched = switch_matches (atom, end_atom, a_is_starred); 5783 5784 if (a_matched != a_is_negated) 5785 { 5786 disj_matched = true; 5787 d_atom = atom; 5788 d_end_atom = end_atom; 5789 } 5790 } 5791 } 5792 5793 if (*p == ':') 5794 { 5795 /* Found the body, that is, the text to substitute if the 5796 current disjunction matches. */ 5797 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred, 5798 disj_matched && !n_way_matched); 5799 if (p == 0) 5800 return 0; 5801 5802 /* If we have an N-way choice, reset state for the next 5803 disjunction. */ 5804 if (*p == ';') 5805 { 5806 n_way_choice = true; 5807 n_way_matched |= disj_matched; 5808 disj_matched = false; 5809 disj_starred = true; 5810 d_atom = d_end_atom = NULL; 5811 } 5812 } 5813 break; 5814 5815 default: 5816 goto invalid; 5817 } 5818 } 5819 while (*p++ != '}'); 5820 5821 return p; 5822 5823 invalid: 5824 fatal ("braced spec '%s' is invalid at '%c'", orig, *p); 5825 5826#undef SKIP_WHITE 5827} 5828 5829/* Subroutine of handle_braces. Scan and process a brace substitution body 5830 (X in the description of %{} syntax). P points one past the colon; 5831 ATOM and END_ATOM bracket the first atom which was found to be true 5832 (present) in the current disjunction; STARRED indicates whether all 5833 the atoms in the current disjunction were starred (for syntax validation); 5834 MATCHED indicates whether the disjunction matched or not, and therefore 5835 whether or not the body is to be processed through do_spec_1 or just 5836 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1 5837 returns -1. */ 5838 5839static const char * 5840process_brace_body (const char *p, const char *atom, const char *end_atom, 5841 int starred, int matched) 5842{ 5843 const char *body, *end_body; 5844 unsigned int nesting_level; 5845 bool have_subst = false; 5846 5847 /* Locate the closing } or ;, honoring nested braces. 5848 Trim trailing whitespace. */ 5849 body = p; 5850 nesting_level = 1; 5851 for (;;) 5852 { 5853 if (*p == '{') 5854 nesting_level++; 5855 else if (*p == '}') 5856 { 5857 if (!--nesting_level) 5858 break; 5859 } 5860 else if (*p == ';' && nesting_level == 1) 5861 break; 5862 else if (*p == '%' && p[1] == '*' && nesting_level == 1) 5863 have_subst = true; 5864 else if (*p == '\0') 5865 goto invalid; 5866 p++; 5867 } 5868 5869 end_body = p; 5870 while (end_body[-1] == ' ' || end_body[-1] == '\t') 5871 end_body--; 5872 5873 if (have_subst && !starred) 5874 goto invalid; 5875 5876 if (matched) 5877 { 5878 /* Copy the substitution body to permanent storage and execute it. 5879 If have_subst is false, this is a simple matter of running the 5880 body through do_spec_1... */ 5881 char *string = save_string (body, end_body - body); 5882 if (!have_subst) 5883 { 5884 if (do_spec_1 (string, 0, NULL) < 0) 5885 return 0; 5886 } 5887 else 5888 { 5889 /* ... but if have_subst is true, we have to process the 5890 body once for each matching switch, with %* set to the 5891 variant part of the switch. */ 5892 unsigned int hard_match_len = end_atom - atom; 5893 int i; 5894 5895 for (i = 0; i < n_switches; i++) 5896 if (!strncmp (switches[i].part1, atom, hard_match_len) 5897 && check_live_switch (i, hard_match_len)) 5898 { 5899 if (do_spec_1 (string, 0, 5900 &switches[i].part1[hard_match_len]) < 0) 5901 return 0; 5902 /* Pass any arguments this switch has. */ 5903 give_switch (i, 1); 5904 suffix_subst = NULL; 5905 } 5906 } 5907 } 5908 5909 return p; 5910 5911 invalid: 5912 fatal ("braced spec body '%s' is invalid", body); 5913} 5914 5915/* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch 5916 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*} 5917 spec, or -1 if either exact match or %* is used. 5918 5919 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch 5920 whose value does not begin with "no-" is obsoleted by the same value 5921 with the "no-", similarly for a switch with the "no-" prefix. */ 5922 5923static int 5924check_live_switch (int switchnum, int prefix_length) 5925{ 5926 const char *name = switches[switchnum].part1; 5927 int i; 5928 5929 /* In the common case of {<at-most-one-letter>*}, a negating 5930 switch would always match, so ignore that case. We will just 5931 send the conflicting switches to the compiler phase. */ 5932 if (prefix_length >= 0 && prefix_length <= 1) 5933 return 1; 5934 5935 /* If we already processed this switch and determined if it was 5936 live or not, return our past determination. */ 5937 if (switches[switchnum].live_cond != 0) 5938 return switches[switchnum].live_cond > 0; 5939 5940 /* Now search for duplicate in a manner that depends on the name. */ 5941 switch (*name) 5942 { 5943 case 'O': 5944 for (i = switchnum + 1; i < n_switches; i++) 5945 if (switches[i].part1[0] == 'O') 5946 { 5947 switches[switchnum].validated = 1; 5948 switches[switchnum].live_cond = SWITCH_FALSE; 5949 return 0; 5950 } 5951 break; 5952 5953 case 'W': case 'f': case 'm': 5954 if (! strncmp (name + 1, "no-", 3)) 5955 { 5956 /* We have Xno-YYY, search for XYYY. */ 5957 for (i = switchnum + 1; i < n_switches; i++) 5958 if (switches[i].part1[0] == name[0] 5959 && ! strcmp (&switches[i].part1[1], &name[4])) 5960 { 5961 switches[switchnum].validated = 1; 5962 switches[switchnum].live_cond = SWITCH_FALSE; 5963 return 0; 5964 } 5965 } 5966 else 5967 { 5968 /* We have XYYY, search for Xno-YYY. */ 5969 for (i = switchnum + 1; i < n_switches; i++) 5970 if (switches[i].part1[0] == name[0] 5971 && switches[i].part1[1] == 'n' 5972 && switches[i].part1[2] == 'o' 5973 && switches[i].part1[3] == '-' 5974 && !strcmp (&switches[i].part1[4], &name[1])) 5975 { 5976 switches[switchnum].validated = 1; 5977 switches[switchnum].live_cond = SWITCH_FALSE; 5978 return 0; 5979 } 5980 } 5981 break; 5982 } 5983 5984 /* Otherwise the switch is live. */ 5985 switches[switchnum].live_cond = SWITCH_LIVE; 5986 return 1; 5987} 5988 5989/* Pass a switch to the current accumulating command 5990 in the same form that we received it. 5991 SWITCHNUM identifies the switch; it is an index into 5992 the vector of switches gcc received, which is `switches'. 5993 This cannot fail since it never finishes a command line. 5994 5995 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */ 5996 5997static void 5998give_switch (int switchnum, int omit_first_word) 5999{ 6000 if (switches[switchnum].live_cond == SWITCH_IGNORE) 6001 return; 6002 6003 if (!omit_first_word) 6004 { 6005 do_spec_1 ("-", 0, NULL); 6006 do_spec_1 (switches[switchnum].part1, 1, NULL); 6007 } 6008 6009 if (switches[switchnum].args != 0) 6010 { 6011 const char **p; 6012 for (p = switches[switchnum].args; *p; p++) 6013 { 6014 const char *arg = *p; 6015 6016 do_spec_1 (" ", 0, NULL); 6017 if (suffix_subst) 6018 { 6019 unsigned length = strlen (arg); 6020 int dot = 0; 6021 6022 while (length-- && !IS_DIR_SEPARATOR (arg[length])) 6023 if (arg[length] == '.') 6024 { 6025 ((char *)arg)[length] = 0; 6026 dot = 1; 6027 break; 6028 } 6029 do_spec_1 (arg, 1, NULL); 6030 if (dot) 6031 ((char *)arg)[length] = '.'; 6032 do_spec_1 (suffix_subst, 1, NULL); 6033 } 6034 else 6035 do_spec_1 (arg, 1, NULL); 6036 } 6037 } 6038 6039 do_spec_1 (" ", 0, NULL); 6040 switches[switchnum].validated = 1; 6041} 6042 6043/* Search for a file named NAME trying various prefixes including the 6044 user's -B prefix and some standard ones. 6045 Return the absolute file name found. If nothing is found, return NAME. */ 6046 6047static const char * 6048find_file (const char *name) 6049{ 6050 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true); 6051 return newname ? newname : name; 6052} 6053 6054/* Determine whether a directory exists. If LINKER, return 0 for 6055 certain fixed names not needed by the linker. */ 6056 6057static int 6058is_directory (const char *path1, bool linker) 6059{ 6060 int len1; 6061 char *path; 6062 char *cp; 6063 struct stat st; 6064 6065 /* Ensure the string ends with "/.". The resulting path will be a 6066 directory even if the given path is a symbolic link. */ 6067 len1 = strlen (path1); 6068 path = alloca (3 + len1); 6069 memcpy (path, path1, len1); 6070 cp = path + len1; 6071 if (!IS_DIR_SEPARATOR (cp[-1])) 6072 *cp++ = DIR_SEPARATOR; 6073 *cp++ = '.'; 6074 *cp = '\0'; 6075 6076#ifndef FREEBSD_NATIVE 6077 /* Exclude directories that the linker is known to search. */ 6078 if (linker 6079 && IS_DIR_SEPARATOR (path[0]) 6080 && ((cp - path == 6 6081 && strncmp (path + 1, "lib", 3) == 0) 6082 || (cp - path == 10 6083 && strncmp (path + 1, "usr", 3) == 0 6084 && IS_DIR_SEPARATOR (path[4]) 6085 && strncmp (path + 5, "lib", 3) == 0))) 6086 return 0; 6087#endif /* FREEBSD_NATIVE */ 6088 6089 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode)); 6090} 6091 6092/* Set up the various global variables to indicate that we're processing 6093 the input file named FILENAME. */ 6094 6095void 6096set_input (const char *filename) 6097{ 6098 const char *p; 6099 6100 input_filename = filename; 6101 input_filename_length = strlen (input_filename); 6102 6103 input_basename = input_filename; 6104#ifdef HAVE_DOS_BASED_FILE_SYSTEM 6105 /* Skip drive name so 'x:foo' is handled properly. */ 6106 if (input_basename[1] == ':') 6107 input_basename += 2; 6108#endif 6109 for (p = input_basename; *p; p++) 6110 if (IS_DIR_SEPARATOR (*p)) 6111 input_basename = p + 1; 6112 6113 /* Find a suffix starting with the last period, 6114 and set basename_length to exclude that suffix. */ 6115 basename_length = strlen (input_basename); 6116 suffixed_basename_length = basename_length; 6117 p = input_basename + basename_length; 6118 while (p != input_basename && *p != '.') 6119 --p; 6120 if (*p == '.' && p != input_basename) 6121 { 6122 basename_length = p - input_basename; 6123 input_suffix = p + 1; 6124 } 6125 else 6126 input_suffix = ""; 6127 6128 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then 6129 we will need to do a stat on the input_filename. The 6130 INPUT_STAT_SET signals that the stat is needed. */ 6131 input_stat_set = 0; 6132} 6133 6134/* On fatal signals, delete all the temporary files. */ 6135 6136static void 6137fatal_error (int signum) 6138{ 6139 signal (signum, SIG_DFL); 6140 delete_failure_queue (); 6141 delete_temp_files (); 6142 /* Get the same signal again, this time not handled, 6143 so its normal effect occurs. */ 6144 kill (getpid (), signum); 6145} 6146 6147extern int main (int, char **); 6148 6149int 6150main (int argc, char **argv) 6151{ 6152 size_t i; 6153 int value; 6154 int linker_was_run = 0; 6155 int lang_n_infiles = 0; 6156 int num_linker_inputs = 0; 6157 char *explicit_link_files; 6158 char *specs_file; 6159 const char *p; 6160 struct user_specs *uptr; 6161 6162 p = argv[0] + strlen (argv[0]); 6163 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1])) 6164 --p; 6165 programname = p; 6166 6167 xmalloc_set_program_name (programname); 6168 6169 expandargv (&argc, &argv); 6170 6171 prune_options (&argc, &argv); 6172 6173#ifdef GCC_DRIVER_HOST_INITIALIZATION 6174 /* Perform host dependent initialization when needed. */ 6175 GCC_DRIVER_HOST_INITIALIZATION; 6176#endif 6177 6178 /* Unlock the stdio streams. */ 6179 unlock_std_streams (); 6180 6181 gcc_init_libintl (); 6182 6183 if (signal (SIGINT, SIG_IGN) != SIG_IGN) 6184 signal (SIGINT, fatal_error); 6185#ifdef SIGHUP 6186 if (signal (SIGHUP, SIG_IGN) != SIG_IGN) 6187 signal (SIGHUP, fatal_error); 6188#endif 6189 if (signal (SIGTERM, SIG_IGN) != SIG_IGN) 6190 signal (SIGTERM, fatal_error); 6191#ifdef SIGPIPE 6192 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN) 6193 signal (SIGPIPE, fatal_error); 6194#endif 6195#ifdef SIGCHLD 6196 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will 6197 receive the signal. A different setting is inheritable */ 6198 signal (SIGCHLD, SIG_DFL); 6199#endif 6200 6201 /* Allocate the argument vector. */ 6202 alloc_args (); 6203 6204 obstack_init (&obstack); 6205 6206 /* Build multilib_select, et. al from the separate lines that make up each 6207 multilib selection. */ 6208 { 6209 const char *const *q = multilib_raw; 6210 int need_space; 6211 6212 obstack_init (&multilib_obstack); 6213 while ((p = *q++) != (char *) 0) 6214 obstack_grow (&multilib_obstack, p, strlen (p)); 6215 6216 obstack_1grow (&multilib_obstack, 0); 6217 multilib_select = XOBFINISH (&multilib_obstack, const char *); 6218 6219 q = multilib_matches_raw; 6220 while ((p = *q++) != (char *) 0) 6221 obstack_grow (&multilib_obstack, p, strlen (p)); 6222 6223 obstack_1grow (&multilib_obstack, 0); 6224 multilib_matches = XOBFINISH (&multilib_obstack, const char *); 6225 6226 q = multilib_exclusions_raw; 6227 while ((p = *q++) != (char *) 0) 6228 obstack_grow (&multilib_obstack, p, strlen (p)); 6229 6230 obstack_1grow (&multilib_obstack, 0); 6231 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *); 6232 6233 need_space = FALSE; 6234 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++) 6235 { 6236 if (need_space) 6237 obstack_1grow (&multilib_obstack, ' '); 6238 obstack_grow (&multilib_obstack, 6239 multilib_defaults_raw[i], 6240 strlen (multilib_defaults_raw[i])); 6241 need_space = TRUE; 6242 } 6243 6244 obstack_1grow (&multilib_obstack, 0); 6245 multilib_defaults = XOBFINISH (&multilib_obstack, const char *); 6246 } 6247 6248 /* Set up to remember the pathname of gcc and any options 6249 needed for collect. We use argv[0] instead of programname because 6250 we need the complete pathname. */ 6251 obstack_init (&collect_obstack); 6252 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1); 6253 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1); 6254 putenv (XOBFINISH (&collect_obstack, char *)); 6255 6256#ifdef INIT_ENVIRONMENT 6257 /* Set up any other necessary machine specific environment variables. */ 6258 putenv (INIT_ENVIRONMENT); 6259#endif 6260 6261 /* Make a table of what switches there are (switches, n_switches). 6262 Make a table of specified input files (infiles, n_infiles). 6263 Decode switches that are handled locally. */ 6264 6265 process_command (argc, (const char **) argv); 6266 6267 /* Initialize the vector of specs to just the default. 6268 This means one element containing 0s, as a terminator. */ 6269 6270 compilers = xmalloc (sizeof default_compilers); 6271 memcpy (compilers, default_compilers, sizeof default_compilers); 6272 n_compilers = n_default_compilers; 6273 6274 /* Read specs from a file if there is one. */ 6275 6276#ifdef FREEBSD_NATIVE 6277 machine_suffix = ""; 6278 just_machine_suffix = ""; 6279#else /* FREEBSD_NATIVE */ 6280 machine_suffix = concat (spec_machine, dir_separator_str, 6281 spec_version, dir_separator_str, NULL); 6282 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL); 6283#endif /* FREEBSD_NATIVE */ 6284 6285 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true); 6286 /* Read the specs file unless it is a default one. */ 6287 if (specs_file != 0 && strcmp (specs_file, "specs")) 6288 read_specs (specs_file, TRUE); 6289 else 6290 init_spec (); 6291 6292 /* We need to check standard_exec_prefix/just_machine_suffix/specs 6293 for any override of as, ld and libraries. */ 6294 specs_file = (char *) alloca (strlen (FBSD_DATA_PREFIX) 6295 + strlen (just_machine_suffix) 6296 + sizeof ("specs")); 6297 6298 strcpy (specs_file, FBSD_DATA_PREFIX); 6299 strcat (specs_file, just_machine_suffix); 6300 strcat (specs_file, "specs"); 6301 if (access (specs_file, R_OK) == 0) 6302 read_specs (specs_file, TRUE); 6303 6304 /* Process any configure-time defaults specified for the command line 6305 options, via OPTION_DEFAULT_SPECS. */ 6306 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++) 6307 do_option_spec (option_default_specs[i].name, 6308 option_default_specs[i].spec); 6309 6310 /* Process DRIVER_SELF_SPECS, adding any new options to the end 6311 of the command line. */ 6312 6313 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++) 6314 do_self_spec (driver_self_specs[i]); 6315 6316 /* If not cross-compiling, look for executables in the standard 6317 places. */ 6318 if (*cross_compile == '0') 6319 { 6320 if (*md_exec_prefix) 6321 { 6322 add_prefix (&exec_prefixes, md_exec_prefix, "GCC", 6323 PREFIX_PRIORITY_LAST, 0, 0); 6324 } 6325 } 6326 6327 /* Process sysroot_suffix_spec. */ 6328 if (*sysroot_suffix_spec != 0 6329 && do_spec_2 (sysroot_suffix_spec) == 0) 6330 { 6331 if (argbuf_index > 1) 6332 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC"); 6333 else if (argbuf_index == 1) 6334 target_sysroot_suffix = xstrdup (argbuf[argbuf_index -1]); 6335 } 6336 6337#ifdef HAVE_LD_SYSROOT 6338 /* Pass the --sysroot option to the linker, if it supports that. If 6339 there is a sysroot_suffix_spec, it has already been processed by 6340 this point, so target_system_root really is the system root we 6341 should be using. */ 6342 if (target_system_root) 6343 { 6344 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) ")); 6345 obstack_grow0 (&obstack, link_spec, strlen (link_spec)); 6346 set_spec ("link", XOBFINISH (&obstack, const char *)); 6347 } 6348#endif 6349 6350 /* Process sysroot_hdrs_suffix_spec. */ 6351 if (*sysroot_hdrs_suffix_spec != 0 6352 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0) 6353 { 6354 if (argbuf_index > 1) 6355 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC"); 6356 else if (argbuf_index == 1) 6357 target_sysroot_hdrs_suffix = xstrdup (argbuf[argbuf_index -1]); 6358 } 6359 6360 /* Look for startfiles in the standard places. */ 6361 if (*startfile_prefix_spec != 0 6362 && do_spec_2 (startfile_prefix_spec) == 0 6363 && do_spec_1 (" ", 0, NULL) == 0) 6364 { 6365 int ndx; 6366 for (ndx = 0; ndx < argbuf_index; ndx++) 6367 add_sysrooted_prefix (&startfile_prefixes, argbuf[ndx], "BINUTILS", 6368 PREFIX_PRIORITY_LAST, 0, 1); 6369 } 6370 /* We should eventually get rid of all these and stick to 6371 startfile_prefix_spec exclusively. */ 6372 else if (*cross_compile == '0' || target_system_root) 6373 { 6374 if (*md_startfile_prefix) 6375 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix, 6376 "GCC", PREFIX_PRIORITY_LAST, 0, 1); 6377 6378 if (*md_startfile_prefix_1) 6379 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1, 6380 "GCC", PREFIX_PRIORITY_LAST, 0, 1); 6381 6382 /* If standard_startfile_prefix is relative, base it on 6383 standard_exec_prefix. This lets us move the installed tree 6384 as a unit. If GCC_EXEC_PREFIX is defined, base 6385 standard_startfile_prefix on that as well. 6386 6387 If the prefix is relative, only search it for native compilers; 6388 otherwise we will search a directory containing host libraries. */ 6389 if (IS_ABSOLUTE_PATH (standard_startfile_prefix)) 6390 add_sysrooted_prefix (&startfile_prefixes, 6391 standard_startfile_prefix, "BINUTILS", 6392 PREFIX_PRIORITY_LAST, 0, 1); 6393 else if (*cross_compile == '0') 6394 { 6395 if (gcc_exec_prefix) 6396 add_prefix (&startfile_prefixes, 6397 concat (gcc_exec_prefix, machine_suffix, 6398 standard_startfile_prefix, NULL), 6399 NULL, PREFIX_PRIORITY_LAST, 0, 1); 6400 add_prefix (&startfile_prefixes, 6401 concat (standard_exec_prefix, 6402 machine_suffix, 6403 standard_startfile_prefix, NULL), 6404 NULL, PREFIX_PRIORITY_LAST, 0, 1); 6405 } 6406 6407#ifndef FREEBSD_NATIVE 6408 if (*standard_startfile_prefix_1) 6409 add_sysrooted_prefix (&startfile_prefixes, 6410 standard_startfile_prefix_1, "BINUTILS", 6411 PREFIX_PRIORITY_LAST, 0, 1); 6412 if (*standard_startfile_prefix_2) 6413 add_sysrooted_prefix (&startfile_prefixes, 6414 standard_startfile_prefix_2, "BINUTILS", 6415 PREFIX_PRIORITY_LAST, 0, 1); 6416#endif 6417 } 6418 6419 /* Process any user specified specs in the order given on the command 6420 line. */ 6421 for (uptr = user_specs_head; uptr; uptr = uptr->next) 6422 { 6423 char *filename = find_a_file (&startfile_prefixes, uptr->filename, 6424 R_OK, true); 6425 read_specs (filename ? filename : uptr->filename, FALSE); 6426 } 6427 6428 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */ 6429 if (gcc_exec_prefix) 6430 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str, 6431 spec_version, dir_separator_str, NULL); 6432 6433 /* Now we have the specs. 6434 Set the `valid' bits for switches that match anything in any spec. */ 6435 6436 validate_all_switches (); 6437 6438 /* Now that we have the switches and the specs, set 6439 the subdirectory based on the options. */ 6440 set_multilib_dir (); 6441 6442 /* Warn about any switches that no pass was interested in. */ 6443 6444 for (i = 0; (int) i < n_switches; i++) 6445 if (! switches[i].validated) 6446 error ("unrecognized option '-%s'", switches[i].part1); 6447 6448 /* Obey some of the options. */ 6449 6450 if (print_search_dirs) 6451 { 6452#ifndef FREEBSD_NATIVE 6453 printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix); 6454#else 6455 printf (_("install: %s\n"), standard_exec_prefix); 6456#endif 6457 printf (_("programs: %s\n"), 6458 build_search_list (&exec_prefixes, "", false, false)); 6459 printf (_("libraries: %s\n"), 6460 build_search_list (&startfile_prefixes, "", false, true)); 6461 return (0); 6462 } 6463 6464 if (print_file_name) 6465 { 6466 printf ("%s\n", find_file (print_file_name)); 6467 return (0); 6468 } 6469 6470 if (print_prog_name) 6471 { 6472 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0); 6473 printf ("%s\n", (newname ? newname : print_prog_name)); 6474 return (0); 6475 } 6476 6477 if (print_multi_lib) 6478 { 6479 print_multilib_info (); 6480 return (0); 6481 } 6482 6483 if (print_multi_directory) 6484 { 6485 if (multilib_dir == NULL) 6486 printf (".\n"); 6487 else 6488 printf ("%s\n", multilib_dir); 6489 return (0); 6490 } 6491 6492 if (print_multi_os_directory) 6493 { 6494 if (multilib_os_dir == NULL) 6495 printf (".\n"); 6496 else 6497 printf ("%s\n", multilib_os_dir); 6498 return (0); 6499 } 6500 6501 if (target_help_flag) 6502 { 6503 /* Print if any target specific options. */ 6504 6505 /* We do not exit here. Instead we have created a fake input file 6506 called 'target-dummy' which needs to be compiled, and we pass this 6507 on to the various sub-processes, along with the --target-help 6508 switch. */ 6509 } 6510 6511 if (print_help_list) 6512 { 6513 display_help (); 6514 6515 if (! verbose_flag) 6516 { 6517 printf (_("\nFor bug reporting instructions, please see:\n")); 6518 printf ("%s.\n", bug_report_url); 6519 6520 return (0); 6521 } 6522 6523 /* We do not exit here. Instead we have created a fake input file 6524 called 'help-dummy' which needs to be compiled, and we pass this 6525 on the various sub-processes, along with the --help switch. */ 6526 } 6527 6528 if (verbose_flag) 6529 { 6530 int n; 6531 const char *thrmod; 6532 6533 notice ("Target: %s\n", spec_machine); 6534 notice ("Configured with: %s\n", configuration_arguments); 6535 6536#ifdef THREAD_MODEL_SPEC 6537 /* We could have defined THREAD_MODEL_SPEC to "%*" by default, 6538 but there's no point in doing all this processing just to get 6539 thread_model back. */ 6540 obstack_init (&obstack); 6541 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model); 6542 obstack_1grow (&obstack, '\0'); 6543 thrmod = XOBFINISH (&obstack, const char *); 6544#else 6545 thrmod = thread_model; 6546#endif 6547 6548 notice ("Thread model: %s\n", thrmod); 6549 6550 /* compiler_version is truncated at the first space when initialized 6551 from version string, so truncate version_string at the first space 6552 before comparing. */ 6553 for (n = 0; version_string[n]; n++) 6554 if (version_string[n] == ' ') 6555 break; 6556 6557 if (! strncmp (version_string, compiler_version, n) 6558 && compiler_version[n] == 0) 6559 notice ("gcc version %s\n", version_string); 6560 else 6561 notice ("gcc driver version %s executing gcc version %s\n", 6562 version_string, compiler_version); 6563 6564 if (n_infiles == 0) 6565 return (0); 6566 } 6567 6568 if (n_infiles == added_libraries) 6569 fatal ("No input files specified"); 6570 6571 /* Make a place to record the compiler output file names 6572 that correspond to the input files. */ 6573 6574 i = n_infiles; 6575 i += lang_specific_extra_outfiles; 6576 outfiles = XCNEWVEC (const char *, i); 6577 6578 /* Record which files were specified explicitly as link input. */ 6579 6580 explicit_link_files = XCNEWVEC (char, n_infiles); 6581 6582 if (combine_flag) 6583 combine_inputs = true; 6584 else 6585 combine_inputs = false; 6586 6587 for (i = 0; (int) i < n_infiles; i++) 6588 { 6589 const char *name = infiles[i].name; 6590 struct compiler *compiler = lookup_compiler (name, 6591 strlen (name), 6592 infiles[i].language); 6593 6594 if (compiler && !(compiler->combinable)) 6595 combine_inputs = false; 6596 6597 if (lang_n_infiles > 0 && compiler != input_file_compiler 6598 && infiles[i].language && infiles[i].language[0] != '*') 6599 infiles[i].incompiler = compiler; 6600 else if (compiler) 6601 { 6602 lang_n_infiles++; 6603 input_file_compiler = compiler; 6604 infiles[i].incompiler = compiler; 6605 } 6606 else 6607 { 6608 /* Since there is no compiler for this input file, assume it is a 6609 linker file. */ 6610 explicit_link_files[i] = 1; 6611 infiles[i].incompiler = NULL; 6612 } 6613 infiles[i].compiled = false; 6614 infiles[i].preprocessed = false; 6615 } 6616 6617 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1) 6618 fatal ("cannot specify -o with -c or -S with multiple files"); 6619 6620 if (combine_flag && save_temps_flag) 6621 { 6622 bool save_combine_inputs = combine_inputs; 6623 /* Must do a separate pre-processing pass for C & Objective-C files, to 6624 obtain individual .i files. */ 6625 6626 combine_inputs = false; 6627 for (i = 0; (int) i < n_infiles; i++) 6628 { 6629 int this_file_error = 0; 6630 6631 input_file_number = i; 6632 set_input (infiles[i].name); 6633 if (infiles[i].incompiler 6634 && (infiles[i].incompiler)->needs_preprocessing) 6635 input_file_compiler = infiles[i].incompiler; 6636 else 6637 continue; 6638 6639 if (input_file_compiler) 6640 { 6641 if (input_file_compiler->spec[0] == '#') 6642 { 6643 error ("%s: %s compiler not installed on this system", 6644 input_filename, &input_file_compiler->spec[1]); 6645 this_file_error = 1; 6646 } 6647 else 6648 { 6649 value = do_spec (input_file_compiler->spec); 6650 infiles[i].preprocessed = true; 6651 if (!have_o_argbuf_index) 6652 fatal ("spec '%s' is invalid", input_file_compiler->spec); 6653 infiles[i].name = argbuf[have_o_argbuf_index]; 6654 infiles[i].incompiler 6655 = lookup_compiler (infiles[i].name, 6656 strlen (infiles[i].name), 6657 infiles[i].language); 6658 6659 if (value < 0) 6660 this_file_error = 1; 6661 } 6662 } 6663 6664 if (this_file_error) 6665 { 6666 delete_failure_queue (); 6667 error_count++; 6668 break; 6669 } 6670 clear_failure_queue (); 6671 } 6672 combine_inputs = save_combine_inputs; 6673 } 6674 6675 for (i = 0; (int) i < n_infiles; i++) 6676 { 6677 int this_file_error = 0; 6678 6679 /* Tell do_spec what to substitute for %i. */ 6680 6681 input_file_number = i; 6682 set_input (infiles[i].name); 6683 6684 if (infiles[i].compiled) 6685 continue; 6686 6687 /* Use the same thing in %o, unless cp->spec says otherwise. */ 6688 6689 outfiles[i] = input_filename; 6690 6691 /* Figure out which compiler from the file's suffix. */ 6692 6693 if (! combine_inputs) 6694 input_file_compiler 6695 = lookup_compiler (infiles[i].name, input_filename_length, 6696 infiles[i].language); 6697 else 6698 input_file_compiler = infiles[i].incompiler; 6699 6700 if (input_file_compiler) 6701 { 6702 /* Ok, we found an applicable compiler. Run its spec. */ 6703 6704 if (input_file_compiler->spec[0] == '#') 6705 { 6706 error ("%s: %s compiler not installed on this system", 6707 input_filename, &input_file_compiler->spec[1]); 6708 this_file_error = 1; 6709 } 6710 else 6711 { 6712 value = do_spec (input_file_compiler->spec); 6713 infiles[i].compiled = true; 6714 if (value < 0) 6715 this_file_error = 1; 6716 } 6717 } 6718 6719 /* If this file's name does not contain a recognized suffix, 6720 record it as explicit linker input. */ 6721 6722 else 6723 explicit_link_files[i] = 1; 6724 6725 /* Clear the delete-on-failure queue, deleting the files in it 6726 if this compilation failed. */ 6727 6728 if (this_file_error) 6729 { 6730 delete_failure_queue (); 6731 error_count++; 6732 } 6733 /* If this compilation succeeded, don't delete those files later. */ 6734 clear_failure_queue (); 6735 } 6736 6737 /* Reset the input file name to the first compile/object file name, for use 6738 with %b in LINK_SPEC. We use the first input file that we can find 6739 a compiler to compile it instead of using infiles.language since for 6740 languages other than C we use aliases that we then lookup later. */ 6741 if (n_infiles > 0) 6742 { 6743 int i; 6744 6745 for (i = 0; i < n_infiles ; i++) 6746 if (infiles[i].language && infiles[i].language[0] != '*') 6747 { 6748 set_input (infiles[i].name); 6749 break; 6750 } 6751 } 6752 6753 if (error_count == 0) 6754 { 6755 /* Make sure INPUT_FILE_NUMBER points to first available open 6756 slot. */ 6757 input_file_number = n_infiles; 6758 if (lang_specific_pre_link ()) 6759 error_count++; 6760 } 6761 6762 /* Determine if there are any linker input files. */ 6763 num_linker_inputs = 0; 6764 for (i = 0; (int) i < n_infiles; i++) 6765 if (explicit_link_files[i] || outfiles[i] != NULL) 6766 num_linker_inputs++; 6767 6768 /* Run ld to link all the compiler output files. */ 6769 6770 if (num_linker_inputs > 0 && error_count == 0) 6771 { 6772 int tmp = execution_count; 6773 6774 /* We'll use ld if we can't find collect2. */ 6775 if (! strcmp (linker_name_spec, "collect2")) 6776 { 6777 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false); 6778 if (s == NULL) 6779 linker_name_spec = "ld"; 6780 } 6781 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables 6782 for collect. */ 6783 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false); 6784 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true); 6785 6786 value = do_spec (link_command_spec); 6787 if (value < 0) 6788 error_count = 1; 6789 linker_was_run = (tmp != execution_count); 6790 } 6791 6792 /* If options said don't run linker, 6793 complain about input files to be given to the linker. */ 6794 6795 if (! linker_was_run && error_count == 0) 6796 for (i = 0; (int) i < n_infiles; i++) 6797 if (explicit_link_files[i]) 6798 error ("%s: linker input file unused because linking not done", 6799 outfiles[i]); 6800 6801 /* Delete some or all of the temporary files we made. */ 6802 6803 if (error_count) 6804 delete_failure_queue (); 6805 delete_temp_files (); 6806 6807 if (print_help_list) 6808 { 6809 printf (("\nFor bug reporting instructions, please see:\n")); 6810 printf ("%s\n", bug_report_url); 6811 } 6812 6813 return (signal_count != 0 ? 2 6814 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1) 6815 : 0); 6816} 6817 6818/* Find the proper compilation spec for the file name NAME, 6819 whose length is LENGTH. LANGUAGE is the specified language, 6820 or 0 if this file is to be passed to the linker. */ 6821 6822static struct compiler * 6823lookup_compiler (const char *name, size_t length, const char *language) 6824{ 6825 struct compiler *cp; 6826 6827 /* If this was specified by the user to be a linker input, indicate that. */ 6828 if (language != 0 && language[0] == '*') 6829 return 0; 6830 6831 /* Otherwise, look for the language, if one is spec'd. */ 6832 if (language != 0) 6833 { 6834 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) 6835 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language)) 6836 return cp; 6837 6838 error ("language %s not recognized", language); 6839 return 0; 6840 } 6841 6842 /* Look for a suffix. */ 6843 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) 6844 { 6845 if (/* The suffix `-' matches only the file name `-'. */ 6846 (!strcmp (cp->suffix, "-") && !strcmp (name, "-")) 6847 || (strlen (cp->suffix) < length 6848 /* See if the suffix matches the end of NAME. */ 6849 && !strcmp (cp->suffix, 6850 name + length - strlen (cp->suffix)) 6851 )) 6852 break; 6853 } 6854 6855#if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM) 6856 /* Look again, but case-insensitively this time. */ 6857 if (cp < compilers) 6858 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) 6859 { 6860 if (/* The suffix `-' matches only the file name `-'. */ 6861 (!strcmp (cp->suffix, "-") && !strcmp (name, "-")) 6862 || (strlen (cp->suffix) < length 6863 /* See if the suffix matches the end of NAME. */ 6864 && ((!strcmp (cp->suffix, 6865 name + length - strlen (cp->suffix)) 6866 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ")) 6867 && !strcasecmp (cp->suffix, 6868 name + length - strlen (cp->suffix))) 6869 )) 6870 break; 6871 } 6872#endif 6873 6874 if (cp >= compilers) 6875 { 6876 if (cp->spec[0] != '@') 6877 /* A non-alias entry: return it. */ 6878 return cp; 6879 6880 /* An alias entry maps a suffix to a language. 6881 Search for the language; pass 0 for NAME and LENGTH 6882 to avoid infinite recursion if language not found. */ 6883 return lookup_compiler (NULL, 0, cp->spec + 1); 6884 } 6885 return 0; 6886} 6887 6888static char * 6889save_string (const char *s, int len) 6890{ 6891 char *result = XNEWVEC (char, len + 1); 6892 6893 memcpy (result, s, len); 6894 result[len] = 0; 6895 return result; 6896} 6897 6898void 6899pfatal_with_name (const char *name) 6900{ 6901 perror_with_name (name); 6902 delete_temp_files (); 6903 exit (1); 6904} 6905 6906static void 6907perror_with_name (const char *name) 6908{ 6909 error ("%s: %s", name, xstrerror (errno)); 6910} 6911 6912/* Output an error message and exit. */ 6913 6914void 6915fancy_abort (const char *file, int line, const char *func) 6916{ 6917 fatal_ice ("internal gcc abort in %s, at %s:%d", func, file, line); 6918} 6919 6920/* Output an error message and exit. */ 6921 6922void 6923fatal_ice (const char *cmsgid, ...) 6924{ 6925 va_list ap; 6926 6927 va_start (ap, cmsgid); 6928 6929 fprintf (stderr, "%s: ", programname); 6930 vfprintf (stderr, _(cmsgid), ap); 6931 va_end (ap); 6932 fprintf (stderr, "\n"); 6933 delete_temp_files (); 6934 exit (pass_exit_codes ? ICE_EXIT_CODE : 1); 6935} 6936 6937void 6938fatal (const char *cmsgid, ...) 6939{ 6940 va_list ap; 6941 6942 va_start (ap, cmsgid); 6943 6944 fprintf (stderr, "%s: ", programname); 6945 vfprintf (stderr, _(cmsgid), ap); 6946 va_end (ap); 6947 fprintf (stderr, "\n"); 6948 delete_temp_files (); 6949 exit (1); 6950} 6951 6952/* The argument is actually c-format, not gcc-internal-format, 6953 but because functions with identical names are used through 6954 the rest of the compiler with gcc-internal-format, we just 6955 need to hope all users of these functions use the common 6956 subset between c-format and gcc-internal-format. */ 6957 6958void 6959error (const char *gmsgid, ...) 6960{ 6961 va_list ap; 6962 6963 va_start (ap, gmsgid); 6964 fprintf (stderr, "%s: ", programname); 6965 vfprintf (stderr, _(gmsgid), ap); 6966 va_end (ap); 6967 6968 fprintf (stderr, "\n"); 6969} 6970 6971static void 6972notice (const char *cmsgid, ...) 6973{ 6974 va_list ap; 6975 6976 va_start (ap, cmsgid); 6977 vfprintf (stderr, _(cmsgid), ap); 6978 va_end (ap); 6979} 6980 6981static inline void 6982validate_switches_from_spec (const char *spec) 6983{ 6984 const char *p = spec; 6985 char c; 6986 while ((c = *p++)) 6987 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{'))) 6988 /* We have a switch spec. */ 6989 p = validate_switches (p + 1); 6990} 6991 6992static void 6993validate_all_switches (void) 6994{ 6995 struct compiler *comp; 6996 struct spec_list *spec; 6997 6998 for (comp = compilers; comp->spec; comp++) 6999 validate_switches_from_spec (comp->spec); 7000 7001 /* Look through the linked list of specs read from the specs file. */ 7002 for (spec = specs; spec; spec = spec->next) 7003 validate_switches_from_spec (*spec->ptr_spec); 7004 7005 validate_switches_from_spec (link_command_spec); 7006} 7007 7008/* Look at the switch-name that comes after START 7009 and mark as valid all supplied switches that match it. */ 7010 7011static const char * 7012validate_switches (const char *start) 7013{ 7014 const char *p = start; 7015 const char *atom; 7016 size_t len; 7017 int i; 7018 bool suffix = false; 7019 bool starred = false; 7020 7021#define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0) 7022 7023next_member: 7024 SKIP_WHITE (); 7025 7026 if (*p == '!') 7027 p++; 7028 7029 SKIP_WHITE (); 7030 if (*p == '.') 7031 suffix = true, p++; 7032 7033 atom = p; 7034 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '=' 7035 || *p == ',' || *p == '.' || *p == '@') 7036 p++; 7037 len = p - atom; 7038 7039 if (*p == '*') 7040 starred = true, p++; 7041 7042 SKIP_WHITE (); 7043 7044 if (!suffix) 7045 { 7046 /* Mark all matching switches as valid. */ 7047 for (i = 0; i < n_switches; i++) 7048 if (!strncmp (switches[i].part1, atom, len) 7049 && (starred || switches[i].part1[len] == 0)) 7050 switches[i].validated = 1; 7051 } 7052 7053 if (*p) p++; 7054 if (*p && (p[-1] == '|' || p[-1] == '&')) 7055 goto next_member; 7056 7057 if (*p && p[-1] == ':') 7058 { 7059 while (*p && *p != ';' && *p != '}') 7060 { 7061 if (*p == '%') 7062 { 7063 p++; 7064 if (*p == '{' || *p == '<') 7065 p = validate_switches (p+1); 7066 else if (p[0] == 'W' && p[1] == '{') 7067 p = validate_switches (p+2); 7068 } 7069 else 7070 p++; 7071 } 7072 7073 if (*p) p++; 7074 if (*p && p[-1] == ';') 7075 goto next_member; 7076 } 7077 7078 return p; 7079#undef SKIP_WHITE 7080} 7081 7082struct mdswitchstr 7083{ 7084 const char *str; 7085 int len; 7086}; 7087 7088static struct mdswitchstr *mdswitches; 7089static int n_mdswitches; 7090 7091/* Check whether a particular argument was used. The first time we 7092 canonicalize the switches to keep only the ones we care about. */ 7093 7094static int 7095used_arg (const char *p, int len) 7096{ 7097 struct mswitchstr 7098 { 7099 const char *str; 7100 const char *replace; 7101 int len; 7102 int rep_len; 7103 }; 7104 7105 static struct mswitchstr *mswitches; 7106 static int n_mswitches; 7107 int i, j; 7108 7109 if (!mswitches) 7110 { 7111 struct mswitchstr *matches; 7112 const char *q; 7113 int cnt = 0; 7114 7115 /* Break multilib_matches into the component strings of string 7116 and replacement string. */ 7117 for (q = multilib_matches; *q != '\0'; q++) 7118 if (*q == ';') 7119 cnt++; 7120 7121 matches = alloca ((sizeof (struct mswitchstr)) * cnt); 7122 i = 0; 7123 q = multilib_matches; 7124 while (*q != '\0') 7125 { 7126 matches[i].str = q; 7127 while (*q != ' ') 7128 { 7129 if (*q == '\0') 7130 { 7131 invalid_matches: 7132 fatal ("multilib spec '%s' is invalid", multilib_matches); 7133 } 7134 q++; 7135 } 7136 matches[i].len = q - matches[i].str; 7137 7138 matches[i].replace = ++q; 7139 while (*q != ';' && *q != '\0') 7140 { 7141 if (*q == ' ') 7142 goto invalid_matches; 7143 q++; 7144 } 7145 matches[i].rep_len = q - matches[i].replace; 7146 i++; 7147 if (*q == ';') 7148 q++; 7149 } 7150 7151 /* Now build a list of the replacement string for switches that we care 7152 about. Make sure we allocate at least one entry. This prevents 7153 xmalloc from calling fatal, and prevents us from re-executing this 7154 block of code. */ 7155 mswitches 7156 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1)); 7157 for (i = 0; i < n_switches; i++) 7158 if (switches[i].live_cond != SWITCH_IGNORE) 7159 { 7160 int xlen = strlen (switches[i].part1); 7161 for (j = 0; j < cnt; j++) 7162 if (xlen == matches[j].len 7163 && ! strncmp (switches[i].part1, matches[j].str, xlen)) 7164 { 7165 mswitches[n_mswitches].str = matches[j].replace; 7166 mswitches[n_mswitches].len = matches[j].rep_len; 7167 mswitches[n_mswitches].replace = (char *) 0; 7168 mswitches[n_mswitches].rep_len = 0; 7169 n_mswitches++; 7170 break; 7171 } 7172 } 7173 7174 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present 7175 on the command line nor any options mutually incompatible with 7176 them. */ 7177 for (i = 0; i < n_mdswitches; i++) 7178 { 7179 const char *r; 7180 7181 for (q = multilib_options; *q != '\0'; q++) 7182 { 7183 while (*q == ' ') 7184 q++; 7185 7186 r = q; 7187 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0 7188 || strchr (" /", q[mdswitches[i].len]) == NULL) 7189 { 7190 while (*q != ' ' && *q != '/' && *q != '\0') 7191 q++; 7192 if (*q != '/') 7193 break; 7194 q++; 7195 } 7196 7197 if (*q != ' ' && *q != '\0') 7198 { 7199 while (*r != ' ' && *r != '\0') 7200 { 7201 q = r; 7202 while (*q != ' ' && *q != '/' && *q != '\0') 7203 q++; 7204 7205 if (used_arg (r, q - r)) 7206 break; 7207 7208 if (*q != '/') 7209 { 7210 mswitches[n_mswitches].str = mdswitches[i].str; 7211 mswitches[n_mswitches].len = mdswitches[i].len; 7212 mswitches[n_mswitches].replace = (char *) 0; 7213 mswitches[n_mswitches].rep_len = 0; 7214 n_mswitches++; 7215 break; 7216 } 7217 7218 r = q + 1; 7219 } 7220 break; 7221 } 7222 } 7223 } 7224 } 7225 7226 for (i = 0; i < n_mswitches; i++) 7227 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len)) 7228 return 1; 7229 7230 return 0; 7231} 7232 7233static int 7234default_arg (const char *p, int len) 7235{ 7236 int i; 7237 7238 for (i = 0; i < n_mdswitches; i++) 7239 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len)) 7240 return 1; 7241 7242 return 0; 7243} 7244 7245/* Work out the subdirectory to use based on the options. The format of 7246 multilib_select is a list of elements. Each element is a subdirectory 7247 name followed by a list of options followed by a semicolon. The format 7248 of multilib_exclusions is the same, but without the preceding 7249 directory. First gcc will check the exclusions, if none of the options 7250 beginning with an exclamation point are present, and all of the other 7251 options are present, then we will ignore this completely. Passing 7252 that, gcc will consider each multilib_select in turn using the same 7253 rules for matching the options. If a match is found, that subdirectory 7254 will be used. */ 7255 7256static void 7257set_multilib_dir (void) 7258{ 7259 const char *p; 7260 unsigned int this_path_len; 7261 const char *this_path, *this_arg; 7262 const char *start, *end; 7263 int not_arg; 7264 int ok, ndfltok, first; 7265 7266 n_mdswitches = 0; 7267 start = multilib_defaults; 7268 while (*start == ' ' || *start == '\t') 7269 start++; 7270 while (*start != '\0') 7271 { 7272 n_mdswitches++; 7273 while (*start != ' ' && *start != '\t' && *start != '\0') 7274 start++; 7275 while (*start == ' ' || *start == '\t') 7276 start++; 7277 } 7278 7279 if (n_mdswitches) 7280 { 7281 int i = 0; 7282 7283 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches); 7284 for (start = multilib_defaults; *start != '\0'; start = end + 1) 7285 { 7286 while (*start == ' ' || *start == '\t') 7287 start++; 7288 7289 if (*start == '\0') 7290 break; 7291 7292 for (end = start + 1; 7293 *end != ' ' && *end != '\t' && *end != '\0'; end++) 7294 ; 7295 7296 obstack_grow (&multilib_obstack, start, end - start); 7297 obstack_1grow (&multilib_obstack, 0); 7298 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *); 7299 mdswitches[i++].len = end - start; 7300 7301 if (*end == '\0') 7302 break; 7303 } 7304 } 7305 7306 p = multilib_exclusions; 7307 while (*p != '\0') 7308 { 7309 /* Ignore newlines. */ 7310 if (*p == '\n') 7311 { 7312 ++p; 7313 continue; 7314 } 7315 7316 /* Check the arguments. */ 7317 ok = 1; 7318 while (*p != ';') 7319 { 7320 if (*p == '\0') 7321 { 7322 invalid_exclusions: 7323 fatal ("multilib exclusions '%s' is invalid", 7324 multilib_exclusions); 7325 } 7326 7327 if (! ok) 7328 { 7329 ++p; 7330 continue; 7331 } 7332 7333 this_arg = p; 7334 while (*p != ' ' && *p != ';') 7335 { 7336 if (*p == '\0') 7337 goto invalid_exclusions; 7338 ++p; 7339 } 7340 7341 if (*this_arg != '!') 7342 not_arg = 0; 7343 else 7344 { 7345 not_arg = 1; 7346 ++this_arg; 7347 } 7348 7349 ok = used_arg (this_arg, p - this_arg); 7350 if (not_arg) 7351 ok = ! ok; 7352 7353 if (*p == ' ') 7354 ++p; 7355 } 7356 7357 if (ok) 7358 return; 7359 7360 ++p; 7361 } 7362 7363 first = 1; 7364 p = multilib_select; 7365 while (*p != '\0') 7366 { 7367 /* Ignore newlines. */ 7368 if (*p == '\n') 7369 { 7370 ++p; 7371 continue; 7372 } 7373 7374 /* Get the initial path. */ 7375 this_path = p; 7376 while (*p != ' ') 7377 { 7378 if (*p == '\0') 7379 { 7380 invalid_select: 7381 fatal ("multilib select '%s' is invalid", 7382 multilib_select); 7383 } 7384 ++p; 7385 } 7386 this_path_len = p - this_path; 7387 7388 /* Check the arguments. */ 7389 ok = 1; 7390 ndfltok = 1; 7391 ++p; 7392 while (*p != ';') 7393 { 7394 if (*p == '\0') 7395 goto invalid_select; 7396 7397 if (! ok) 7398 { 7399 ++p; 7400 continue; 7401 } 7402 7403 this_arg = p; 7404 while (*p != ' ' && *p != ';') 7405 { 7406 if (*p == '\0') 7407 goto invalid_select; 7408 ++p; 7409 } 7410 7411 if (*this_arg != '!') 7412 not_arg = 0; 7413 else 7414 { 7415 not_arg = 1; 7416 ++this_arg; 7417 } 7418 7419 /* If this is a default argument, we can just ignore it. 7420 This is true even if this_arg begins with '!'. Beginning 7421 with '!' does not mean that this argument is necessarily 7422 inappropriate for this library: it merely means that 7423 there is a more specific library which uses this 7424 argument. If this argument is a default, we need not 7425 consider that more specific library. */ 7426 ok = used_arg (this_arg, p - this_arg); 7427 if (not_arg) 7428 ok = ! ok; 7429 7430 if (! ok) 7431 ndfltok = 0; 7432 7433 if (default_arg (this_arg, p - this_arg)) 7434 ok = 1; 7435 7436 if (*p == ' ') 7437 ++p; 7438 } 7439 7440 if (ok && first) 7441 { 7442 if (this_path_len != 1 7443 || this_path[0] != '.') 7444 { 7445 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1); 7446 char *q; 7447 7448 strncpy (new_multilib_dir, this_path, this_path_len); 7449 new_multilib_dir[this_path_len] = '\0'; 7450 q = strchr (new_multilib_dir, ':'); 7451 if (q != NULL) 7452 *q = '\0'; 7453 multilib_dir = new_multilib_dir; 7454 } 7455 first = 0; 7456 } 7457 7458 if (ndfltok) 7459 { 7460 const char *q = this_path, *end = this_path + this_path_len; 7461 7462 while (q < end && *q != ':') 7463 q++; 7464 if (q < end) 7465 { 7466 char *new_multilib_os_dir = XNEWVEC (char, end - q); 7467 memcpy (new_multilib_os_dir, q + 1, end - q - 1); 7468 new_multilib_os_dir[end - q - 1] = '\0'; 7469 multilib_os_dir = new_multilib_os_dir; 7470 break; 7471 } 7472 } 7473 7474 ++p; 7475 } 7476 7477 if (multilib_dir == NULL && multilib_os_dir != NULL 7478 && strcmp (multilib_os_dir, ".") == 0) 7479 { 7480 free ((char *) multilib_os_dir); 7481 multilib_os_dir = NULL; 7482 } 7483 else if (multilib_dir != NULL && multilib_os_dir == NULL) 7484 multilib_os_dir = multilib_dir; 7485} 7486 7487/* Print out the multiple library subdirectory selection 7488 information. This prints out a series of lines. Each line looks 7489 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is 7490 required. Only the desired options are printed out, the negative 7491 matches. The options are print without a leading dash. There are 7492 no spaces to make it easy to use the information in the shell. 7493 Each subdirectory is printed only once. This assumes the ordering 7494 generated by the genmultilib script. Also, we leave out ones that match 7495 the exclusions. */ 7496 7497static void 7498print_multilib_info (void) 7499{ 7500 const char *p = multilib_select; 7501 const char *last_path = 0, *this_path; 7502 int skip; 7503 unsigned int last_path_len = 0; 7504 7505 while (*p != '\0') 7506 { 7507 skip = 0; 7508 /* Ignore newlines. */ 7509 if (*p == '\n') 7510 { 7511 ++p; 7512 continue; 7513 } 7514 7515 /* Get the initial path. */ 7516 this_path = p; 7517 while (*p != ' ') 7518 { 7519 if (*p == '\0') 7520 { 7521 invalid_select: 7522 fatal ("multilib select '%s' is invalid", multilib_select); 7523 } 7524 7525 ++p; 7526 } 7527 7528 /* When --disable-multilib was used but target defines 7529 MULTILIB_OSDIRNAMES, entries starting with .: are there just 7530 to find multilib_os_dir, so skip them from output. */ 7531 if (this_path[0] == '.' && this_path[1] == ':') 7532 skip = 1; 7533 7534 /* Check for matches with the multilib_exclusions. We don't bother 7535 with the '!' in either list. If any of the exclusion rules match 7536 all of its options with the select rule, we skip it. */ 7537 { 7538 const char *e = multilib_exclusions; 7539 const char *this_arg; 7540 7541 while (*e != '\0') 7542 { 7543 int m = 1; 7544 /* Ignore newlines. */ 7545 if (*e == '\n') 7546 { 7547 ++e; 7548 continue; 7549 } 7550 7551 /* Check the arguments. */ 7552 while (*e != ';') 7553 { 7554 const char *q; 7555 int mp = 0; 7556 7557 if (*e == '\0') 7558 { 7559 invalid_exclusion: 7560 fatal ("multilib exclusion '%s' is invalid", 7561 multilib_exclusions); 7562 } 7563 7564 if (! m) 7565 { 7566 ++e; 7567 continue; 7568 } 7569 7570 this_arg = e; 7571 7572 while (*e != ' ' && *e != ';') 7573 { 7574 if (*e == '\0') 7575 goto invalid_exclusion; 7576 ++e; 7577 } 7578 7579 q = p + 1; 7580 while (*q != ';') 7581 { 7582 const char *arg; 7583 int len = e - this_arg; 7584 7585 if (*q == '\0') 7586 goto invalid_select; 7587 7588 arg = q; 7589 7590 while (*q != ' ' && *q != ';') 7591 { 7592 if (*q == '\0') 7593 goto invalid_select; 7594 ++q; 7595 } 7596 7597 if (! strncmp (arg, this_arg, 7598 (len < q - arg) ? q - arg : len) 7599 || default_arg (this_arg, e - this_arg)) 7600 { 7601 mp = 1; 7602 break; 7603 } 7604 7605 if (*q == ' ') 7606 ++q; 7607 } 7608 7609 if (! mp) 7610 m = 0; 7611 7612 if (*e == ' ') 7613 ++e; 7614 } 7615 7616 if (m) 7617 { 7618 skip = 1; 7619 break; 7620 } 7621 7622 if (*e != '\0') 7623 ++e; 7624 } 7625 } 7626 7627 if (! skip) 7628 { 7629 /* If this is a duplicate, skip it. */ 7630 skip = (last_path != 0 7631 && (unsigned int) (p - this_path) == last_path_len 7632 && ! strncmp (last_path, this_path, last_path_len)); 7633 7634 last_path = this_path; 7635 last_path_len = p - this_path; 7636 } 7637 7638 /* If this directory requires any default arguments, we can skip 7639 it. We will already have printed a directory identical to 7640 this one which does not require that default argument. */ 7641 if (! skip) 7642 { 7643 const char *q; 7644 7645 q = p + 1; 7646 while (*q != ';') 7647 { 7648 const char *arg; 7649 7650 if (*q == '\0') 7651 goto invalid_select; 7652 7653 if (*q == '!') 7654 arg = NULL; 7655 else 7656 arg = q; 7657 7658 while (*q != ' ' && *q != ';') 7659 { 7660 if (*q == '\0') 7661 goto invalid_select; 7662 ++q; 7663 } 7664 7665 if (arg != NULL 7666 && default_arg (arg, q - arg)) 7667 { 7668 skip = 1; 7669 break; 7670 } 7671 7672 if (*q == ' ') 7673 ++q; 7674 } 7675 } 7676 7677 if (! skip) 7678 { 7679 const char *p1; 7680 7681 for (p1 = last_path; p1 < p && *p1 != ':'; p1++) 7682 putchar (*p1); 7683 putchar (';'); 7684 } 7685 7686 ++p; 7687 while (*p != ';') 7688 { 7689 int use_arg; 7690 7691 if (*p == '\0') 7692 goto invalid_select; 7693 7694 if (skip) 7695 { 7696 ++p; 7697 continue; 7698 } 7699 7700 use_arg = *p != '!'; 7701 7702 if (use_arg) 7703 putchar ('@'); 7704 7705 while (*p != ' ' && *p != ';') 7706 { 7707 if (*p == '\0') 7708 goto invalid_select; 7709 if (use_arg) 7710 putchar (*p); 7711 ++p; 7712 } 7713 7714 if (*p == ' ') 7715 ++p; 7716 } 7717 7718 if (! skip) 7719 { 7720 /* If there are extra options, print them now. */ 7721 if (multilib_extra && *multilib_extra) 7722 { 7723 int print_at = TRUE; 7724 const char *q; 7725 7726 for (q = multilib_extra; *q != '\0'; q++) 7727 { 7728 if (*q == ' ') 7729 print_at = TRUE; 7730 else 7731 { 7732 if (print_at) 7733 putchar ('@'); 7734 putchar (*q); 7735 print_at = FALSE; 7736 } 7737 } 7738 } 7739 7740 putchar ('\n'); 7741 } 7742 7743 ++p; 7744 } 7745} 7746 7747/* if-exists built-in spec function. 7748 7749 Checks to see if the file specified by the absolute pathname in 7750 ARGS exists. Returns that pathname if found. 7751 7752 The usual use for this function is to check for a library file 7753 (whose name has been expanded with %s). */ 7754 7755static const char * 7756if_exists_spec_function (int argc, const char **argv) 7757{ 7758 /* Must have only one argument. */ 7759 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK)) 7760 return argv[0]; 7761 7762 return NULL; 7763} 7764 7765/* if-exists-else built-in spec function. 7766 7767 This is like if-exists, but takes an additional argument which 7768 is returned if the first argument does not exist. */ 7769 7770static const char * 7771if_exists_else_spec_function (int argc, const char **argv) 7772{ 7773 /* Must have exactly two arguments. */ 7774 if (argc != 2) 7775 return NULL; 7776 7777 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK)) 7778 return argv[0]; 7779 7780 return argv[1]; 7781} 7782 7783/* replace-outfile built-in spec function. 7784 7785 This looks for the first argument in the outfiles array's name and 7786 replaces it with the second argument. */ 7787 7788static const char * 7789replace_outfile_spec_function (int argc, const char **argv) 7790{ 7791 int i; 7792 /* Must have exactly two arguments. */ 7793 if (argc != 2) 7794 abort (); 7795 7796 for (i = 0; i < n_infiles; i++) 7797 { 7798 if (outfiles[i] && !strcmp (outfiles[i], argv[0])) 7799 outfiles[i] = xstrdup (argv[1]); 7800 } 7801 return NULL; 7802} 7803 7804/* Given two version numbers, compares the two numbers. 7805 A version number must match the regular expression 7806 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))* 7807*/ 7808static int 7809compare_version_strings (const char *v1, const char *v2) 7810{ 7811 int rresult; 7812 regex_t r; 7813 7814 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$", 7815 REG_EXTENDED | REG_NOSUB) != 0) 7816 abort (); 7817 rresult = regexec (&r, v1, 0, NULL, 0); 7818 if (rresult == REG_NOMATCH) 7819 fatal ("invalid version number `%s'", v1); 7820 else if (rresult != 0) 7821 abort (); 7822 rresult = regexec (&r, v2, 0, NULL, 0); 7823 if (rresult == REG_NOMATCH) 7824 fatal ("invalid version number `%s'", v2); 7825 else if (rresult != 0) 7826 abort (); 7827 7828 return strverscmp (v1, v2); 7829} 7830 7831 7832/* version_compare built-in spec function. 7833 7834 This takes an argument of the following form: 7835 7836 <comparison-op> <arg1> [<arg2>] <switch> <result> 7837 7838 and produces "result" if the comparison evaluates to true, 7839 and nothing if it doesn't. 7840 7841 The supported <comparison-op> values are: 7842 7843 >= true if switch is a later (or same) version than arg1 7844 !> opposite of >= 7845 < true if switch is an earlier version than arg1 7846 !< opposite of < 7847 >< true if switch is arg1 or later, and earlier than arg2 7848 <> true if switch is earlier than arg1 or is arg2 or later 7849 7850 If the switch is not present, the condition is false unless 7851 the first character of the <comparison-op> is '!'. 7852 7853 For example, 7854 %:version-compare(>= 10.3 mmacosx-version-min= -lmx) 7855 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */ 7856 7857static const char * 7858version_compare_spec_function (int argc, const char **argv) 7859{ 7860 int comp1, comp2; 7861 size_t switch_len; 7862 const char *switch_value = NULL; 7863 int nargs = 1, i; 7864 bool result; 7865 7866 if (argc < 3) 7867 fatal ("too few arguments to %%:version-compare"); 7868 if (argv[0][0] == '\0') 7869 abort (); 7870 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!') 7871 nargs = 2; 7872 if (argc != nargs + 3) 7873 fatal ("too many arguments to %%:version-compare"); 7874 7875 switch_len = strlen (argv[nargs + 1]); 7876 for (i = 0; i < n_switches; i++) 7877 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len) 7878 && check_live_switch (i, switch_len)) 7879 switch_value = switches[i].part1 + switch_len; 7880 7881 if (switch_value == NULL) 7882 comp1 = comp2 = -1; 7883 else 7884 { 7885 comp1 = compare_version_strings (switch_value, argv[1]); 7886 if (nargs == 2) 7887 comp2 = compare_version_strings (switch_value, argv[2]); 7888 else 7889 comp2 = -1; /* This value unused. */ 7890 } 7891 7892 switch (argv[0][0] << 8 | argv[0][1]) 7893 { 7894 case '>' << 8 | '=': 7895 result = comp1 >= 0; 7896 break; 7897 case '!' << 8 | '<': 7898 result = comp1 >= 0 || switch_value == NULL; 7899 break; 7900 case '<' << 8: 7901 result = comp1 < 0; 7902 break; 7903 case '!' << 8 | '>': 7904 result = comp1 < 0 || switch_value == NULL; 7905 break; 7906 case '>' << 8 | '<': 7907 result = comp1 >= 0 && comp2 < 0; 7908 break; 7909 case '<' << 8 | '>': 7910 result = comp1 < 0 || comp2 >= 0; 7911 break; 7912 7913 default: 7914 fatal ("unknown operator '%s' in %%:version-compare", argv[0]); 7915 } 7916 if (! result) 7917 return NULL; 7918 7919 return argv[nargs + 2]; 7920} 7921 7922/* %:include builtin spec function. This differs from %include in that it 7923 can be nested inside a spec, and thus be conditionalized. It takes 7924 one argument, the filename, and looks for it in the startfile path. 7925 The result is always NULL, i.e. an empty expansion. */ 7926 7927static const char * 7928include_spec_function (int argc, const char **argv) 7929{ 7930 char *file; 7931 7932 if (argc != 1) 7933 abort (); 7934 7935 file = find_a_file (&startfile_prefixes, argv[0], R_OK, 0); 7936 read_specs (file ? file : argv[0], FALSE); 7937 7938 return NULL; 7939} 7940