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,
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 2, or (at your option) any later
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING. If not, write to the Free
20 Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
23 This paragraph is here to try to keep Sun CC from dying.
24 The number of chars here seems crucial!!!! */
28 /* This program is the user interface to the C compiler and possibly to
29 other compilers. It is used because compilation is a complicated procedure
30 which involves running several programs and passing temporary files between
31 them, forwarding the users switches to those programs selectively,
32 and deleting the temporary files at the end.
34 CC recognizes how to compile each input file by suffixes in the file names.
35 Once it knows which kind of compilation to perform, the procedure for
36 compilation is specified by a string called a "spec". */
38 /* A Short Introduction to Adding a Command-Line Option.
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.
44 In the following, consider adding the command-line argument
47 1. Each command-line option is specified in the specs file. The
48 notation is described below in the comment entitled "The Specs
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 `-'.
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'.
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 `-'
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(),
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(). */
78 #include "coretypes.h"
79 #include "multilib.h" /* before tm.h */
82 #if ! defined( SIGCHLD ) && defined( SIGCLD )
83 # define SIGCHLD SIGCLD
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
99 /* By default there is no special suffix for host executables. */
100 #ifdef HOST_EXECUTABLE_SUFFIX
101 #define HAVE_HOST_EXECUTABLE_SUFFIX
103 #define HOST_EXECUTABLE_SUFFIX ""
106 /* By default, the suffix for target object files is ".o". */
107 #ifdef TARGET_OBJECT_SUFFIX
108 #define HAVE_TARGET_OBJECT_SUFFIX
110 #define TARGET_OBJECT_SUFFIX ".o"
113 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
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"
121 #define kill(p,s) raise(s)
124 /* If a stage of compilation returns an exit status >= 1,
125 compilation of that file ceases. */
127 #define MIN_FATAL_STATUS 1
129 /* Flag set by cppspec.c to 1. */
132 /* Flag saying to pass the greatest exit code returned by a sub-process
133 to the calling program. */
134 static int pass_exit_codes;
136 /* Definition of string containing the arguments given to configure. */
137 #include "configargs.h"
139 /* Flag saying to print the directories gcc will search through looking for
140 programs, libraries, etc. */
142 static int print_search_dirs;
144 /* Flag saying to print the full filename of this file
145 as found through our usual search mechanism. */
147 static const char *print_file_name = NULL;
149 /* As print_file_name, but search for executable file. */
151 static const char *print_prog_name = NULL;
153 /* Flag saying to print the relative path we'd use to
154 find libgcc.a given the current compiler flags. */
156 static int print_multi_directory;
158 /* Flag saying to print the relative path we'd use to
159 find OS libraries given the current compiler flags. */
161 static int print_multi_os_directory;
163 /* Flag saying to print the list of subdirectories and
164 compiler flags used to select them in a standard form. */
166 static int print_multi_lib;
168 /* Flag saying to print the command line options understood by gcc and its
171 static int print_help_list;
173 /* Flag indicating whether we should print the command and arguments */
175 static int verbose_flag;
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. */
182 static int verbose_only_flag;
184 /* Flag indicating to print target specific command line options. */
186 static int target_help_flag;
188 /* Flag indicating whether we should report subprocess execution times
189 (if this is supported by the system - see pexecute.c). */
191 static int report_times;
193 /* Nonzero means place this string before uses of /, so that include
194 and library files can be found in an alternate location. */
196 #ifdef TARGET_SYSTEM_ROOT
197 static const char *target_system_root = TARGET_SYSTEM_ROOT;
199 static const char *target_system_root = 0;
202 /* Nonzero means pass the updated target_system_root to the compiler. */
204 static int target_system_root_changed;
206 /* Nonzero means append this string to target_system_root. */
208 static const char *target_sysroot_suffix = 0;
210 /* Nonzero means append this string to target_system_root for headers. */
212 static const char *target_sysroot_hdrs_suffix = 0;
214 /* Nonzero means write "temp" files in source directory
215 and use the source file's name in them, and don't delete them. */
217 static int save_temps_flag;
219 /* Nonzero means pass multiple source files to the compiler at one time. */
221 static int combine_flag = 0;
223 /* Nonzero means use pipes to communicate between subprocesses.
224 Overridden by either of the above two flags. */
226 static int use_pipes;
228 /* The compiler version. */
230 static const char *compiler_version;
232 /* The target version specified with -V */
234 static const char *const spec_version = DEFAULT_TARGET_VERSION;
236 /* The target machine specified with -b. */
238 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
240 /* Nonzero if cross-compiling.
241 When -b is used, the value comes from the `specs' file. */
243 #ifdef CROSS_DIRECTORY_STRUCTURE
244 static const char *cross_compile = "1";
246 static const char *cross_compile = "0";
249 #ifdef MODIFY_TARGET_NAME
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. */
255 static const struct modify_target
257 const char *const sw;
258 const enum add_del {ADD, DELETE} add_del;
259 const char *const str;
261 modify_target[] = MODIFY_TARGET_NAME;
264 /* The number of errors that have occurred; the link phase will not be
265 run if this is nonzero. */
266 static int error_count = 0;
268 /* Greatest exit code of sub-processes that has been encountered up to
270 static int greatest_status = 1;
272 /* This is the obstack which we use to allocate many strings. */
274 static struct obstack obstack;
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
281 static struct obstack collect_obstack;
283 /* Forward declaration for prototypes. */
287 static void init_spec (void);
288 static void store_arg (const char *, int, int);
289 static char *load_specs (const char *);
290 static void read_specs (const char *, int);
291 static void set_spec (const char *, const char *);
292 static struct compiler *lookup_compiler (const char *, size_t, const char *);
293 static char *build_search_list (const struct path_prefix *, const char *,
295 static void putenv_from_prefixes (const struct path_prefix *, const char *,
297 static int access_check (const char *, int);
298 static char *find_a_file (const struct path_prefix *, const char *, int, bool);
299 static void add_prefix (struct path_prefix *, const char *, const char *,
301 static void add_sysrooted_prefix (struct path_prefix *, const char *,
302 const char *, int, int, int);
303 static void translate_options (int *, const char *const **);
304 static char *skip_whitespace (char *);
305 static void delete_if_ordinary (const char *);
306 static void delete_temp_files (void);
307 static void delete_failure_queue (void);
308 static void clear_failure_queue (void);
309 static int check_live_switch (int, int);
310 static const char *handle_braces (const char *);
311 static inline bool input_suffix_matches (const char *, const char *);
312 static inline bool switch_matches (const char *, const char *, int);
313 static inline void mark_matching_switches (const char *, const char *, int);
314 static inline void process_marked_switches (void);
315 static const char *process_brace_body (const char *, const char *, const char *, int, int);
316 static const struct spec_function *lookup_spec_function (const char *);
317 static const char *eval_spec_function (const char *, const char *);
318 static const char *handle_spec_function (const char *);
319 static char *save_string (const char *, int);
320 static void set_collect_gcc_options (void);
321 static int do_spec_1 (const char *, int, const char *);
322 static int do_spec_2 (const char *);
323 static void do_option_spec (const char *, const char *);
324 static void do_self_spec (const char *);
325 static const char *find_file (const char *);
326 static int is_directory (const char *, bool);
327 static const char *validate_switches (const char *);
328 static void validate_all_switches (void);
329 static inline void validate_switches_from_spec (const char *);
330 static void give_switch (int, int);
331 static int used_arg (const char *, int);
332 static int default_arg (const char *, int);
333 static void set_multilib_dir (void);
334 static void print_multilib_info (void);
335 static void perror_with_name (const char *);
336 static void fatal_ice (const char *, ...) ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN;
337 static void notice (const char *, ...) ATTRIBUTE_PRINTF_1;
338 static void display_help (void);
339 static void add_preprocessor_option (const char *, int);
340 static void add_assembler_option (const char *, int);
341 static void add_linker_option (const char *, int);
342 static void process_command (int, const char **);
343 static int execute (void);
344 static void alloc_args (void);
345 static void clear_args (void);
346 static void fatal_error (int);
347 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
348 static void init_gcc_specs (struct obstack *, const char *, const char *,
351 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
352 static const char *convert_filename (const char *, int, int);
355 static const char *if_exists_spec_function (int, const char **);
356 static const char *if_exists_else_spec_function (int, const char **);
357 static const char *replace_outfile_spec_function (int, const char **);
358 static const char *version_compare_spec_function (int, const char **);
359 static const char *include_spec_function (int, const char **);
361 /* The Specs Language
363 Specs are strings containing lines, each of which (if not blank)
364 is made up of a program name, and arguments separated by spaces.
365 The program name must be exact and start from root, since no path
366 is searched and it is unreliable to depend on the current working directory.
367 Redirection of input or output is not supported; the subprograms must
368 accept filenames saying what files to read and write.
370 In addition, the specs can contain %-sequences to substitute variable text
371 or for conditional text. Here is a table of all defined %-sequences.
372 Note that spaces are not generated automatically around the results of
373 expanding these sequences; therefore, you can concatenate them together
374 or with constant text in a single argument.
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).
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.
395 like %g, but if -pipe is in effect, expands simply to "-".
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.)
401 like %g, but generates a new temporary file name even if %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.
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
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
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".
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
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
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
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
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*}.
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.
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.
525 %(Spec) processes a specification defined in a specs file as *Spec:
526 %[Spec] as above, but put __ around -D arguments
528 The conditional text X in a %{S:X} or similar construct may contain
529 other nested % constructs or spaces, or even newlines. They are
530 processed as usual, as described above. Trailing white space in X is
531 ignored. White space may also appear anywhere on the left side of the
532 colon in these constructs, except between . or * and the corresponding
535 The -O, -f, -m, and -W switches are handled specifically in these
536 constructs. 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
538 value is ignored, except with {S*} where S is just one letter; this
539 passes all matching options.
541 The character | at the beginning of the predicate text is used to indicate
542 that a command should be piped to the following command, but only if -pipe
545 Note that it is built into CC which switches take arguments and which
546 do not. You might think it would be useful to generalize this to
547 allow each compiler's spec to say which switches take arguments. But
548 this cannot be done in a consistent fashion. CC cannot even decide
549 which input files have been specified without knowing which switches
550 take arguments, and it must know which input files to compile in order
551 to tell which compilers to run.
553 CC also knows implicitly that arguments starting in `-l' are to be
554 treated as compiler output files, and passed to the linker in their
555 proper position among the other output files. */
557 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
559 /* config.h can define ASM_SPEC to provide extra args to the assembler
560 or extra switch-translations. */
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 ""
571 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
572 or extra switch-translations. */
577 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
578 or extra switch-translations. */
583 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
584 or extra switch-translations. */
586 #define CC1PLUS_SPEC ""
589 /* config.h can define LINK_SPEC to provide extra args to the linker
590 or extra switch-translations. */
595 /* config.h can define LIB_SPEC to override the default libraries. */
597 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
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}"
611 #define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}"
614 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
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"
623 #define LIBGCC_SPEC "-lgcc"
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}}}"
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 ""
639 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
641 #define ENDFILE_SPEC ""
645 #define LINKER_NAME "collect2"
648 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
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}}")
658 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
659 # define ASM_DEBUG_SPEC "%{g*:--gstabs}"
661 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
662 # define ASM_DEBUG_SPEC "%{g*:--gdwarf2}"
666 #ifndef ASM_DEBUG_SPEC
667 # define ASM_DEBUG_SPEC ""
670 /* Here is the spec for running the linker, after compiling all files. */
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"
679 #ifndef LINK_SSP_SPEC
680 #ifdef TARGET_LIBC_PROVIDES_SSP
681 #define LINK_SSP_SPEC "%{fstack-protector:}"
683 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-strong|fstack-protector-all:-lssp_nonshared -lssp}"
687 #ifndef LINK_PIE_SPEC
689 #define LINK_PIE_SPEC "%{pie:-pie} "
691 #define LINK_PIE_SPEC "%{pie:} "
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
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*} }}}}}}"
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*} }}}}}}"
725 #ifndef LINK_LIBGCC_SPEC
726 /* Generate -L options for startfile prefix list. */
727 # define LINK_LIBGCC_SPEC "%D"
730 #ifndef STARTFILE_PREFIX_SPEC
731 # define STARTFILE_PREFIX_SPEC ""
735 # define SYSROOT_SPEC "--sysroot=%R"
738 #ifndef SYSROOT_SUFFIX_SPEC
739 # define SYSROOT_SUFFIX_SPEC ""
742 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
743 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
746 static const char *asm_debug;
747 static const char *cpp_spec = CPP_SPEC;
748 static const char *cc1_spec = CC1_SPEC;
749 static const char *cc1plus_spec = CC1PLUS_SPEC;
750 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
751 static const char *link_ssp_spec = LINK_SSP_SPEC;
752 static const char *asm_spec = ASM_SPEC;
753 static const char *asm_final_spec = ASM_FINAL_SPEC;
754 static const char *link_spec = LINK_SPEC;
755 static const char *lib_spec = LIB_SPEC;
756 static const char *mfwrap_spec = MFWRAP_SPEC;
757 static const char *mflib_spec = MFLIB_SPEC;
758 static const char *link_gomp_spec = "";
759 static const char *libgcc_spec = LIBGCC_SPEC;
760 static const char *endfile_spec = ENDFILE_SPEC;
761 static const char *startfile_spec = STARTFILE_SPEC;
762 static const char *switches_need_spaces = SWITCHES_NEED_SPACES;
763 static const char *linker_name_spec = LINKER_NAME;
764 static const char *link_command_spec = LINK_COMMAND_SPEC;
765 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
766 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
767 static const char *sysroot_spec = SYSROOT_SPEC;
768 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
769 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
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. */
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. */
780 static const char *trad_capable_cpp =
781 "cc1 -E %{traditional|ftraditional|traditional-cpp:-traditional-cpp}";
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. */
786 static 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}\
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. */
803 static 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}";
808 /* This contains cpp options which are not passed when the preprocessor
809 output will be used by another program. */
810 static const char *cpp_debug_options = "%{d*}";
812 /* NB: This is shared amongst all front-ends. */
813 static 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}";
826 static const char *asm_options =
827 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
829 static const char *invoke_as =
830 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
831 "%{!S:-o %|.s |\n as %(asm_options) %|.s %A }";
833 "%{!S:-o %|.s |\n as %(asm_options) %m.s %A }";
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
839 static struct obstack multilib_obstack;
840 static const char *multilib_select;
841 static const char *multilib_matches;
842 static const char *multilib_defaults;
843 static const char *multilib_exclusions;
845 /* Check whether a particular argument is a default argument. */
847 #ifndef MULTILIB_DEFAULTS
848 #define MULTILIB_DEFAULTS { "" }
851 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
853 #ifndef DRIVER_SELF_SPECS
854 #define DRIVER_SELF_SPECS ""
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}"
863 static const char *const driver_self_specs[] = {
864 DRIVER_SELF_SPECS, GOMP_SELF_SPECS
867 #ifndef OPTION_DEFAULT_SPECS
868 #define OPTION_DEFAULT_SPECS { "", "" }
877 static const struct default_spec
878 option_default_specs[] = { OPTION_DEFAULT_SPECS };
882 struct user_specs *next;
883 const char *filename;
886 static struct user_specs *user_specs_head, *user_specs_tail;
888 #ifndef SWITCH_TAKES_ARG
889 #define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR)
892 #ifndef WORD_SWITCH_TAKES_ARG
893 #define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
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')
901 #ifndef SWITCH_CURTAILS_COMPILATION
902 #define SWITCH_CURTAILS_COMPILATION(CHAR) \
903 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR)
907 /* Record the mapping from file suffixes for compilation specs. */
911 const char *suffix; /* Use this compiler for input files
912 whose names end in this suffix. */
914 const char *spec; /* To use this compiler, run this spec. */
916 const char *cpp_spec; /* If non-NULL, substitute this spec
917 for `%C', rather than the usual
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. */
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.
930 An entry containing two 0s is used to terminate the vector.
932 If multiple entries match a file, the last matching one is used. */
934 static struct compiler *compilers;
936 /* Number of entries in `compilers', not counting the null terminator. */
938 static int n_compilers;
940 /* The default list of file name suffixes and their compilation specs. */
942 static const struct compiler default_compilers[] =
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},
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)}\
972 %{traditional|ftraditional:\
973 %eGNU C no longer supports -traditional without -E}\
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} \
979 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
980 cc1 %(cpp_unique_options) %(cc1_options)}}}\
981 %{!fsyntax-only:%(invoke_as)}} \
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},
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},
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)}\
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} \
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},
1009 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 1, 0},
1010 {".s", "@assembler", 0, 1, 0},
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 }}}}"
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 }}}}"
1029 /* Mark end of table. */
1033 /* Number of elements in default_compilers, not counting the terminator. */
1035 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
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. */
1040 static int n_linker_options;
1041 static char **linker_options;
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. */
1046 static int n_assembler_options;
1047 static char **assembler_options;
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. */
1052 static int n_preprocessor_options;
1053 static char **preprocessor_options;
1055 /* Define how to map long options into short ones. */
1057 /* This structure describes one mapping. */
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;
1072 /* This is the table of mappings. Mappings are tried sequentially
1073 for each option encountered; the first one that matches, wins. */
1075 static const struct option_map option_map[] =
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},
1166 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1167 static const struct {
1168 const char *const option_found;
1169 const char *const replacements;
1170 } target_option_translations[] =
1172 TARGET_OPTION_TRANSLATE_TABLE,
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. */
1182 translate_options (int *argcp, const char *const **argvp)
1186 const char *const *argv = *argvp;
1187 int newvsize = (argc + 2) * 2 * sizeof (const char *);
1188 const char **newv = xmalloc (newvsize);
1192 newv[newindex++] = argv[i++];
1196 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1200 target_option_translations[tott_idx].option_found;
1203 if (strcmp (target_option_translations[tott_idx].option_found,
1210 for (sp = target_option_translations[tott_idx].replacements;
1217 newvsize += spaces * sizeof (const char *);
1218 newv = xrealloc (newv, newvsize);
1220 sp = target_option_translations[tott_idx].replacements;
1229 newv[newindex++] = np;
1230 while (*np != ' ' && *np)
1241 if (target_option_translations[tott_idx].option_found)
1245 /* Translate -- options. */
1246 if (argv[i][0] == '-' && argv[i][1] == '-')
1249 /* Find a mapping that applies to this option. */
1250 for (j = 0; j < ARRAY_SIZE (option_map); j++)
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;
1260 if (!strncmp (argv[i], option_map[j].name, complen))
1262 const char *arg = 0;
1264 if (arglen < optlen)
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))
1271 error ("ambiguous abbreviation %s", argv[i]);
1275 if (k != ARRAY_SIZE (option_map))
1279 if (arglen > optlen)
1281 /* If the option has an argument, accept that. */
1282 if (argv[i][optlen] == '=')
1283 arg = argv[i] + optlen + 1;
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;
1290 /* Otherwise, extra text at end means mismatch.
1291 Try other mappings. */
1296 else if (strchr (arginfo, '*') != 0)
1298 error ("incomplete '%s' option", option_map[j].name);
1302 /* Handle arguments. */
1303 if (strchr (arginfo, 'a') != 0)
1309 error ("missing argument to '%s' option",
1310 option_map[j].name);
1317 else if (strchr (arginfo, '*') != 0)
1319 else if (strchr (arginfo, 'o') == 0)
1322 error ("extraneous argument to '%s' option",
1323 option_map[j].name);
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,
1333 newv[newindex++] = option_map[j].equivalent;
1334 newv[newindex++] = arg;
1337 newv[newindex++] = option_map[j].equivalent;
1345 /* Handle old-fashioned options--just copy them through,
1346 with their arguments. */
1347 else if (argv[i][0] == '-')
1349 const char *p = argv[i] + 1;
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')
1360 else if (! strcmp (p, "Xlinker"))
1362 else if (! strcmp (p, "Xpreprocessor"))
1364 else if (! strcmp (p, "Xassembler"))
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
1370 if (nskip + i > argc)
1375 newv[newindex++] = argv[i++];
1380 /* Ordinary operands, or +e options. */
1381 newv[newindex++] = argv[i++];
1391 skip_whitespace (char *p)
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')
1399 else if (*p == '\n' || *p == ' ' || *p == '\t')
1413 /* Structures to keep track of prefixes to try when looking for files. */
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. */
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) */
1433 /* List of prefixes to try when looking for executables. */
1435 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1437 /* List of prefixes to try when looking for startup (crt0) files. */
1439 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1441 /* List of prefixes to try when looking for include files. */
1443 static struct path_prefix include_prefixes = { 0, 0, "include" };
1445 /* Suffix to attach to directories searched for commands.
1446 This looks like `MACHINE/VERSION/'. */
1448 static const char *machine_suffix = 0;
1450 /* Suffix to attach to directories searched for commands.
1451 This is just `MACHINE/'. */
1453 static const char *just_machine_suffix = 0;
1455 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1457 static const char *gcc_exec_prefix;
1459 /* Adjusted value of standard_libexec_prefix. */
1461 static const char *gcc_libexec_prefix;
1463 /* Default prefixes to attach to command names. */
1465 #ifndef STANDARD_STARTFILE_PREFIX_1
1466 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1468 #ifndef STANDARD_STARTFILE_PREFIX_2
1469 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1472 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1473 #undef MD_EXEC_PREFIX
1474 #undef MD_STARTFILE_PREFIX
1475 #undef MD_STARTFILE_PREFIX_1
1478 /* If no prefixes defined, use the null string, which will disable them. */
1479 #ifndef MD_EXEC_PREFIX
1480 #define MD_EXEC_PREFIX ""
1482 #ifndef MD_STARTFILE_PREFIX
1483 #define MD_STARTFILE_PREFIX ""
1485 #ifndef MD_STARTFILE_PREFIX_1
1486 #define MD_STARTFILE_PREFIX_1 ""
1489 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1490 static const char *const standard_exec_prefix_1 = "/usr/libexec/gcc/";
1491 static const char *const standard_exec_prefix_2 = "/usr/lib/gcc/";
1492 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1494 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1495 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1496 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1497 static const char *const standard_startfile_prefix_1
1498 = STANDARD_STARTFILE_PREFIX_1;
1499 static const char *const standard_startfile_prefix_2
1500 = STANDARD_STARTFILE_PREFIX_2;
1502 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1503 static const char *tooldir_prefix;
1505 #ifndef FREEBSD_NATIVE
1506 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1507 #endif /* not FREEBSD_NATIVE */
1509 static const char *standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1511 /* Subdirectory to use for locating libraries. Set by
1512 set_multilib_dir based on the compilation options. */
1514 static const char *multilib_dir;
1516 /* Subdirectory to use for locating libraries in OS conventions. Set by
1517 set_multilib_dir based on the compilation options. */
1519 static const char *multilib_os_dir;
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
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 */
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 */
1540 #define INIT_STATIC_SPEC(NAME,PTR) \
1541 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1543 /* List of statically defined specs. */
1544 static struct spec_list static_specs[] =
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),
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. */
1594 const char *const name;
1595 const char *const ptr;
1598 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1599 static struct spec_list *extra_specs = (struct spec_list *) 0;
1602 /* List of dynamically allocates specs that have been defined so far. */
1604 static struct spec_list *specs = (struct spec_list *) 0;
1606 /* List of static spec functions. */
1608 static const struct spec_function static_spec_functions[] =
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
1621 static int processing_spec_function;
1623 /* Add appropriate libgcc specs to OBSTACK, taking into account
1624 various permutations of -shared-libgcc, -shared, and such. */
1626 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1628 #ifndef USE_LD_AS_NEEDED
1629 #define USE_LD_AS_NEEDED 0
1633 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1634 const char *static_name, const char *eh_name)
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"
1646 shared_name, "%{!shared: ", static_name, "}"
1650 "%{!shared-libgcc:", static_name, " ", eh_name, "}"
1651 "%{shared-libgcc:", shared_name, " ", static_name, "}"
1655 "%{shared-libgcc:", shared_name, "}"
1656 "%{!shared-libgcc:", static_name, "}"
1659 "%{shared:", shared_name, "}"
1664 obstack_grow (obstack, buf, strlen (buf));
1667 #endif /* ENABLE_SHARED_LIBGCC */
1669 /* Initialize the specs lookup routines. */
1674 struct spec_list *next = (struct spec_list *) 0;
1675 struct spec_list *sl = (struct spec_list *) 0;
1679 return; /* Already initialized. */
1682 notice ("Using built-in specs.\n");
1685 extra_specs = xcalloc (sizeof (struct spec_list),
1686 ARRAY_SIZE (extra_specs_1));
1688 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1690 sl = &extra_specs[i];
1691 sl->name = extra_specs_1[i].name;
1692 sl->ptr = extra_specs_1[i].ptr;
1694 sl->name_len = strlen (sl->name);
1695 sl->ptr_spec = &sl->ptr;
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;
1704 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1706 sl = &static_specs[i];
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:
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.
1720 (2) If "-ldl", then it's also a fair bet that we're doing
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.
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.
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.
1737 Doing any of this probably requires invoking an external program to
1738 do the actual object file scanning. */
1740 const char *p = libgcc_spec;
1743 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1744 when given the proper command line arguments. */
1747 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1749 init_gcc_specs (&obstack,
1751 #ifdef USE_LIBUNWIND_EXCEPTIONS
1755 #ifdef FREEBSD_NATIVE
1756 LIBGCC_STATIC_LIB_SPEC,
1757 LIBGCC_EH_STATIC_LIB_SPEC
1762 #ifdef USE_LIBUNWIND_EXCEPTIONS
1763 # ifdef HAVE_LD_STATIC_DYNAMIC
1764 " %{!static:-Bstatic} -lunwind %{!static:-Bdynamic}"
1774 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
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,
1782 #ifdef USE_LIBUNWIND_EXCEPTIONS
1791 obstack_1grow (&obstack, *p);
1792 in_sep = (*p == ' ');
1797 obstack_1grow (&obstack, '\0');
1798 libgcc_spec = XOBFINISH (&obstack, const char *);
1801 #ifdef USE_AS_TRADITIONAL_FORMAT
1802 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
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 *);
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 *);
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
1825 set_spec (const char *name, const char *spec)
1827 struct spec_list *sl;
1828 const char *old_spec;
1829 int name_len = strlen (name);
1832 /* If this is the first call, initialize the statically allocated specs. */
1835 struct spec_list *next = (struct spec_list *) 0;
1836 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1838 sl = &static_specs[i];
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))
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;
1858 *(sl->ptr_spec) = "";
1863 old_spec = *(sl->ptr_spec);
1864 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1865 ? concat (old_spec, spec + 1, NULL)
1870 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1873 /* Free the old spec. */
1874 if (old_spec && sl->alloc_p)
1875 free ((void *) old_spec);
1880 /* Accumulate a command (program name and args), and run it. */
1882 /* Vector of pointers to arguments in the current line of specifications. */
1884 static const char **argbuf;
1886 /* Number of elements allocated in argbuf. */
1888 static int argbuf_length;
1890 /* Number of elements in argbuf currently in use (containing args). */
1892 static int argbuf_index;
1894 /* Position in the argbuf array containing the name of the output file
1895 (the value associated with the "-o" flag). */
1897 static int have_o_argbuf_index = 0;
1899 /* Were the options -c or -S passed. */
1900 static int have_c = 0;
1902 /* Was the option -o passed. */
1903 static int have_o = 0;
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
1909 static 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;
1918 /* Number of commands executed so far. */
1920 static int execution_count;
1922 /* Number of commands that exited with a signal. */
1924 static int signal_count;
1926 /* Name with which this program was invoked. */
1928 static const char *programname;
1930 /* Allocate the argument vector. */
1936 argbuf = XNEWVEC (const char *, argbuf_length);
1939 /* Clear out the vector of arguments (after a command is executed). */
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. */
1955 store_arg (const char *arg, int delete_always, int delete_failure)
1957 if (argbuf_index + 1 == argbuf_length)
1958 argbuf = xrealloc (argbuf, (argbuf_length *= 2) * sizeof (const char *));
1960 argbuf[argbuf_index++] = arg;
1961 argbuf[argbuf_index] = 0;
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);
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
1974 load_specs (const char *filename)
1978 struct stat statbuf;
1985 notice ("Reading specs from %s\n", filename);
1987 /* Open and stat the file. */
1988 desc = open (filename, O_RDONLY, 0);
1990 pfatal_with_name (filename);
1991 if (stat (filename, &statbuf) < 0)
1992 pfatal_with_name (filename);
1994 /* Read contents of file into BUFFER. */
1995 buffer = XNEWVEC (char, statbuf.st_size + 1);
1996 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1998 pfatal_with_name (filename);
1999 buffer[readlen] = 0;
2002 specs = XNEWVEC (char, readlen + 1);
2004 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
2010 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
2012 else if (*(buffer_p + 1) == '\n') /* \r\n */
2026 /* Read compilation specs from a file named FILENAME,
2027 replacing the default ones.
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.
2035 Anything invalid in the file is a fatal error. */
2038 read_specs (const char *filename, int main_p)
2043 buffer = load_specs (filename);
2045 /* Scan BUFFER for specs, putting them in the vector. */
2051 char *in, *out, *p1, *p2, *p3;
2053 /* Advance P in BUFFER to the next nonblank nocomment line. */
2054 p = skip_whitespace (p);
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)
2064 while (*p && *p != '\n')
2070 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
2071 && (p1[sizeof "%include" - 1] == ' '
2072 || p1[sizeof "%include" - 1] == '\t'))
2076 p1 += sizeof ("%include");
2077 while (*p1 == ' ' || *p1 == '\t')
2080 if (*p1++ != '<' || p[-2] != '>')
2081 fatal ("specs %%include syntax malformed after %ld characters",
2082 (long) (p1 - buffer + 1));
2085 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
2086 read_specs (new_filename ? new_filename : p1, FALSE);
2089 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
2090 && (p1[sizeof "%include_noerr" - 1] == ' '
2091 || p1[sizeof "%include_noerr" - 1] == '\t'))
2095 p1 += sizeof "%include_noerr";
2096 while (*p1 == ' ' || *p1 == '\t')
2099 if (*p1++ != '<' || p[-2] != '>')
2100 fatal ("specs %%include syntax malformed after %ld characters",
2101 (long) (p1 - buffer + 1));
2104 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
2106 read_specs (new_filename, FALSE);
2107 else if (verbose_flag)
2108 notice ("could not find specs file %s\n", p1);
2111 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
2112 && (p1[sizeof "%rename" - 1] == ' '
2113 || p1[sizeof "%rename" - 1] == '\t'))
2116 struct spec_list *sl;
2117 struct spec_list *newsl;
2119 /* Get original name. */
2120 p1 += sizeof "%rename";
2121 while (*p1 == ' ' || *p1 == '\t')
2124 if (! ISALPHA ((unsigned char) *p1))
2125 fatal ("specs %%rename syntax malformed after %ld characters",
2126 (long) (p1 - buffer));
2129 while (*p2 && !ISSPACE ((unsigned char) *p2))
2132 if (*p2 != ' ' && *p2 != '\t')
2133 fatal ("specs %%rename syntax malformed after %ld characters",
2134 (long) (p2 - buffer));
2138 while (*p2 == ' ' || *p2 == '\t')
2141 if (! ISALPHA ((unsigned char) *p2))
2142 fatal ("specs %%rename syntax malformed after %ld characters",
2143 (long) (p2 - buffer));
2145 /* Get new spec name. */
2147 while (*p3 && !ISSPACE ((unsigned char) *p3))
2151 fatal ("specs %%rename syntax malformed after %ld characters",
2152 (long) (p3 - buffer));
2155 for (sl = specs; sl; sl = sl->next)
2156 if (name_len == sl->name_len && !strcmp (sl->name, p1))
2160 fatal ("specs %s spec was not found to be renamed", p1);
2162 if (strcmp (p1, p2) == 0)
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'",
2172 notice ("rename spec %s to %s\n", p1, p2);
2174 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
2178 set_spec (p2, *(sl->ptr_spec));
2180 free ((void *) *(sl->ptr_spec));
2182 *(sl->ptr_spec) = "";
2187 fatal ("specs unknown %% command after %ld characters",
2188 (long) (p1 - buffer));
2191 /* Find the colon that should end the suffix. */
2193 while (*p1 && *p1 != ':' && *p1 != '\n')
2196 /* The colon shouldn't be missing. */
2198 fatal ("specs file malformed after %ld characters",
2199 (long) (p1 - buffer));
2201 /* Skip back over trailing whitespace. */
2203 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
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);
2211 fatal ("specs file malformed after %ld characters",
2212 (long) (p - buffer));
2215 /* Find next blank line or end of string. */
2216 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
2219 /* Specs end at the blank line and do not include the newline. */
2220 spec = save_string (p, p1 - p);
2223 /* Delete backslash-newline sequences from the spec. */
2228 if (in[0] == '\\' && in[1] == '\n')
2230 else if (in[0] == '#')
2231 while (*in && *in != '\n')
2239 if (suffix[0] == '*')
2241 if (! strcmp (suffix, "*link_command"))
2242 link_command_spec = spec;
2244 set_spec (suffix + 1, spec);
2248 /* Add this pair to the vector. */
2250 = xrealloc (compilers,
2251 (n_compilers + 2) * sizeof (struct compiler));
2253 compilers[n_compilers].suffix = suffix;
2254 compilers[n_compilers].spec = spec;
2256 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2260 link_command_spec = spec;
2263 if (link_command_spec == 0)
2264 fatal ("spec file has no spec for linking");
2267 /* Record the names of temporary files we tell compilers to write,
2268 and delete them at the end of the run. */
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.
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. */
2281 static const char *temp_filename;
2283 /* Length of the prefix. */
2285 static int temp_filename_length;
2287 /* Define the list of temporary files to delete. */
2292 struct temp_file *next;
2295 /* Queue of files to delete on success or failure of compilation. */
2296 static struct temp_file *always_delete_queue;
2297 /* Queue of files to delete on failure of compilation. */
2298 static struct temp_file *failure_delete_queue;
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. */
2307 record_temp_file (const char *filename, int always_delete, int fail_delete)
2309 char *const name = xstrdup (filename);
2313 struct temp_file *temp;
2314 for (temp = always_delete_queue; temp; temp = temp->next)
2315 if (! strcmp (name, temp->name))
2318 temp = XNEW (struct temp_file);
2319 temp->next = always_delete_queue;
2321 always_delete_queue = temp;
2328 struct temp_file *temp;
2329 for (temp = failure_delete_queue; temp; temp = temp->next)
2330 if (! strcmp (name, temp->name))
2333 temp = XNEW (struct temp_file);
2334 temp->next = failure_delete_queue;
2336 failure_delete_queue = temp;
2342 /* Delete all the temporary files whose names we previously recorded. */
2344 #ifndef DELETE_IF_ORDINARY
2345 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2348 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2349 if (unlink (NAME) < 0) \
2351 perror_with_name (NAME); \
2356 delete_if_ordinary (const char *name)
2362 printf ("Delete %s? (y or n) ", name);
2366 while ((c = getchar ()) != '\n' && c != EOF)
2369 if (i == 'y' || i == 'Y')
2371 DELETE_IF_ORDINARY (name, st, verbose_flag);
2375 delete_temp_files (void)
2377 struct temp_file *temp;
2379 for (temp = always_delete_queue; temp; temp = temp->next)
2380 delete_if_ordinary (temp->name);
2381 always_delete_queue = 0;
2384 /* Delete all the files to be deleted on error. */
2387 delete_failure_queue (void)
2389 struct temp_file *temp;
2391 for (temp = failure_delete_queue; temp; temp = temp->next)
2392 delete_if_ordinary (temp->name);
2396 clear_failure_queue (void)
2398 failure_delete_queue = 0;
2401 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
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.
2412 Returns the value returned by CALLBACK. */
2415 for_each_path (const struct path_prefix *paths,
2418 void *(*callback) (char *, void *),
2419 void *callback_info)
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;
2428 bool skip_multi_dir = false;
2429 bool skip_multi_os_dir = false;
2431 multi_suffix = machine_suffix;
2432 just_multi_suffix = just_machine_suffix;
2433 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0)
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);
2439 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0)
2440 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL);
2444 size_t multi_dir_len = 0;
2445 size_t multi_os_dir_len = 0;
2447 size_t just_suffix_len;
2451 multi_dir_len = strlen (multi_dir);
2453 multi_os_dir_len = strlen (multi_os_dir);
2454 suffix_len = strlen (multi_suffix);
2455 just_suffix_len = strlen (just_multi_suffix);
2459 len = paths->max_len + extra_space + 1;
2460 if (suffix_len > multi_os_dir_len)
2463 len += multi_os_dir_len;
2464 path = XNEWVEC (char, len);
2467 for (pl = paths->plist; pl != 0; pl = pl->next)
2469 len = strlen (pl->prefix);
2470 memcpy (path, pl->prefix, len);
2472 /* Look first in MACHINE/VERSION subdirectory. */
2473 if (!skip_multi_dir)
2475 memcpy (path + len, multi_suffix, suffix_len + 1);
2476 ret = callback (path, callback_info);
2481 /* Some paths are tried with just the machine (ie. target)
2482 subdir. This is used for finding as, ld, etc. */
2484 && pl->require_machine_suffix == 2)
2486 memcpy (path + len, just_multi_suffix, just_suffix_len + 1);
2487 ret = callback (path, callback_info);
2492 /* Now try the base path. */
2493 if (!pl->require_machine_suffix
2494 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir))
2496 const char *this_multi;
2497 size_t this_multi_len;
2499 if (pl->os_multilib)
2501 this_multi = multi_os_dir;
2502 this_multi_len = multi_os_dir_len;
2506 this_multi = multi_dir;
2507 this_multi_len = multi_dir_len;
2511 memcpy (path + len, this_multi, this_multi_len + 1);
2515 ret = callback (path, callback_info);
2523 if (multi_dir == NULL && multi_os_dir == NULL)
2526 /* Run through the paths again, this time without multilibs.
2527 Don't repeat any we have already seen. */
2530 free ((char *) multi_dir);
2532 free ((char *) multi_suffix);
2533 multi_suffix = machine_suffix;
2534 free ((char *) just_multi_suffix);
2535 just_multi_suffix = just_machine_suffix;
2538 skip_multi_dir = true;
2541 free ((char *) multi_os_dir);
2542 multi_os_dir = NULL;
2545 skip_multi_os_dir = true;
2550 free ((char *) multi_dir);
2551 free ((char *) multi_suffix);
2552 free ((char *) just_multi_suffix);
2555 free ((char *) multi_os_dir);
2561 /* Callback for build_search_list. Adds path to obstack being built. */
2563 struct add_to_obstack_info {
2570 add_to_obstack (char *path, void *data)
2572 struct add_to_obstack_info *info = data;
2574 if (info->check_dir && !is_directory (path, false))
2577 if (!info->first_time)
2578 obstack_1grow (info->ob, PATH_SEPARATOR);
2580 obstack_grow (info->ob, path, strlen (path));
2582 info->first_time = false;
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
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. */
2595 build_search_list (const struct path_prefix *paths, const char *prefix,
2596 bool check_dir, bool do_multi)
2598 struct add_to_obstack_info info;
2600 info.ob = &collect_obstack;
2601 info.check_dir = check_dir;
2602 info.first_time = true;
2604 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2605 obstack_1grow (&collect_obstack, '=');
2607 for_each_path (paths, do_multi, 0, add_to_obstack, &info);
2609 obstack_1grow (&collect_obstack, '\0');
2610 return XOBFINISH (&collect_obstack, char *);
2613 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2617 putenv_from_prefixes (const struct path_prefix *paths, const char *env_var,
2620 putenv (build_search_list (paths, env_var, true, do_multi));
2623 /* Check whether NAME can be accessed in MODE. This is like access,
2624 except that it never considers directories to be executable. */
2627 access_check (const char *name, int mode)
2633 if (stat (name, &st) < 0
2634 || S_ISDIR (st.st_mode))
2638 return access (name, mode);
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. */
2645 struct file_at_path_info {
2654 file_at_path (char *path, void *data)
2656 struct file_at_path_info *info = data;
2657 size_t len = strlen (path);
2659 memcpy (path + len, info->name, info->name_len);
2660 len += info->name_len;
2662 /* Some systems have a suffix for executable files.
2663 So try appending that first. */
2664 if (info->suffix_len)
2666 memcpy (path + len, info->suffix, info->suffix_len + 1);
2667 if (access_check (path, info->mode) == 0)
2672 if (access_check (path, info->mode) == 0)
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. */
2684 find_a_file (const struct path_prefix *pprefix, const char *name, int mode,
2687 struct file_at_path_info info;
2689 #ifdef DEFAULT_ASSEMBLER
2690 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2691 return xstrdup (DEFAULT_ASSEMBLER);
2694 #ifdef DEFAULT_LINKER
2695 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2696 return xstrdup (DEFAULT_LINKER);
2699 #ifdef FREEBSD_NATIVE
2700 if (! strcmp(name, "include"))
2702 #ifdef CROSS_INCLUDE_DIR
2703 return xstrdup(CROSS_INCLUDE_DIR);
2705 return xstrdup(STANDARD_INCLUDE_DIR);
2710 /* Determine the filename to execute (special case for absolute paths). */
2712 if (IS_ABSOLUTE_PATH (name))
2714 if (access (name, mode) == 0)
2715 return xstrdup (name);
2721 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "";
2722 info.name_len = strlen (info.name);
2723 info.suffix_len = strlen (info.suffix);
2726 return for_each_path (pprefix, do_multi, info.name_len + info.suffix_len,
2727 file_at_path, &info);
2730 /* Ranking of prefixes in the sort list. -B prefixes are put before
2733 enum path_prefix_priority
2735 PREFIX_PRIORITY_B_OPT,
2736 PREFIX_PRIORITY_LAST
2739 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2740 order according to PRIORITY. Within each PRIORITY, new entries are
2743 If WARN is nonzero, we will warn if no file is found
2744 through this prefix. WARN should point to an int
2745 which will be set to 1 if this entry is used.
2747 COMPONENT is the value to be passed to update_path.
2749 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2750 the complete value of machine_suffix.
2751 2 means try both machine_suffix and just_machine_suffix. */
2754 add_prefix (struct path_prefix *pprefix, const char *prefix,
2755 const char *component, /* enum prefix_priority */ int priority,
2756 int require_machine_suffix, int os_multilib)
2758 struct prefix_list *pl, **prev;
2761 for (prev = &pprefix->plist;
2762 (*prev) != NULL && (*prev)->priority <= priority;
2763 prev = &(*prev)->next)
2766 /* Keep track of the longest prefix. */
2768 prefix = update_path (prefix, component);
2769 len = strlen (prefix);
2770 if (len > pprefix->max_len)
2771 pprefix->max_len = len;
2773 pl = XNEW (struct prefix_list);
2774 pl->prefix = prefix;
2775 pl->require_machine_suffix = require_machine_suffix;
2776 pl->priority = priority;
2777 pl->os_multilib = os_multilib;
2779 /* Insert after PREV. */
2784 /* Same as add_prefix, but prepending target_system_root to prefix. */
2786 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2787 const char *component,
2788 /* enum prefix_priority */ int priority,
2789 int require_machine_suffix, int os_multilib)
2791 if (!IS_ABSOLUTE_PATH (prefix))
2792 fatal ("system path '%s' is not absolute", prefix);
2794 if (target_system_root)
2796 if (target_sysroot_suffix)
2797 prefix = concat (target_sysroot_suffix, prefix, NULL);
2798 prefix = concat (target_system_root, prefix, NULL);
2800 /* We have to override this because GCC's notion of sysroot
2801 moves along with GCC. */
2805 add_prefix (pprefix, prefix, component, priority,
2806 require_machine_suffix, os_multilib);
2809 /* Execute the command specified by the arguments on the current line of spec.
2810 When using pipes, this includes several piped-together commands
2811 with `|' between them.
2813 Return 0 if successful, -1 if failed. */
2819 int n_commands; /* # of command. */
2821 struct pex_obj *pex;
2824 const char *prog; /* program name. */
2825 const char **argv; /* vector of args. */
2828 struct command *commands; /* each command buffer with above info. */
2830 gcc_assert (!processing_spec_function);
2832 /* Count # of piped commands. */
2833 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2834 if (strcmp (argbuf[i], "|") == 0)
2837 /* Get storage for each command. */
2838 commands = alloca (n_commands * sizeof (struct command));
2840 /* Split argbuf into its separate piped processes,
2841 and record info about each one.
2842 Also search for the programs that are to be run. */
2844 commands[0].prog = argbuf[0]; /* first command. */
2845 commands[0].argv = &argbuf[0];
2846 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false);
2849 commands[0].argv[0] = string;
2851 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2852 if (strcmp (argbuf[i], "|") == 0)
2853 { /* each command. */
2854 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2855 fatal ("-pipe not supported");
2857 argbuf[i] = 0; /* termination of command args. */
2858 commands[n_commands].prog = argbuf[i + 1];
2859 commands[n_commands].argv = &argbuf[i + 1];
2860 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2863 commands[n_commands].argv[0] = string;
2867 argbuf[argbuf_index] = 0;
2869 /* If -v, print what we are about to do, and maybe query. */
2873 /* For help listings, put a blank line between sub-processes. */
2874 if (print_help_list)
2875 fputc ('\n', stderr);
2877 /* Print each piped command as a separate line. */
2878 for (i = 0; i < n_commands; i++)
2880 const char *const *j;
2882 if (verbose_only_flag)
2884 for (j = commands[i].argv; *j; j++)
2887 fprintf (stderr, " \"");
2888 for (p = *j; *p; ++p)
2890 if (*p == '"' || *p == '\\' || *p == '$')
2891 fputc ('\\', stderr);
2894 fputc ('"', stderr);
2898 for (j = commands[i].argv; *j; j++)
2899 fprintf (stderr, " %s", *j);
2901 /* Print a pipe symbol after all but the last command. */
2902 if (i + 1 != n_commands)
2903 fprintf (stderr, " |");
2904 fprintf (stderr, "\n");
2907 if (verbose_only_flag != 0)
2909 /* verbose_only_flag should act as if the spec was
2910 executed, so increment execution_count before
2911 returning. This prevents spurious warnings about
2912 unused linker input files, etc. */
2917 notice ("\nGo ahead? (y or n) ");
2921 while (getchar () != '\n')
2924 if (i != 'y' && i != 'Y')
2929 #ifdef ENABLE_VALGRIND_CHECKING
2930 /* Run the each command through valgrind. To simplify prepending the
2931 path to valgrind and the option "-q" (for quiet operation unless
2932 something triggers), we allocate a separate argv array. */
2934 for (i = 0; i < n_commands; i++)
2940 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2943 argv = alloca ((argc + 3) * sizeof (char *));
2945 argv[0] = VALGRIND_PATH;
2947 for (j = 2; j < argc + 2; j++)
2948 argv[j] = commands[i].argv[j - 2];
2951 commands[i].argv = argv;
2952 commands[i].prog = argv[0];
2956 /* Run each piped subprocess. */
2958 pex = pex_init (PEX_USE_PIPES | (report_times ? PEX_RECORD_TIMES : 0),
2959 programname, temp_filename);
2961 pfatal_with_name (_("pex_init failed"));
2963 for (i = 0; i < n_commands; i++)
2967 const char *string = commands[i].argv[0];
2969 errmsg = pex_run (pex,
2970 ((i + 1 == n_commands ? PEX_LAST : 0)
2971 | (string == commands[i].prog ? PEX_SEARCH : 0)),
2972 string, (char * const *) commands[i].argv,
2977 fatal ("%s", errmsg);
2981 pfatal_with_name (errmsg);
2985 if (string != commands[i].prog)
2986 free ((void *) string);
2991 /* Wait for all the subprocesses to finish. */
2995 struct pex_time *times = NULL;
2998 statuses = alloca (n_commands * sizeof (int));
2999 if (!pex_get_status (pex, n_commands, statuses))
3000 pfatal_with_name (_("failed to get exit status"));
3004 times = alloca (n_commands * sizeof (struct pex_time));
3005 if (!pex_get_times (pex, n_commands, times))
3006 pfatal_with_name (_("failed to get process times"));
3011 for (i = 0; i < n_commands; ++i)
3013 int status = statuses[i];
3015 if (WIFSIGNALED (status))
3018 /* SIGPIPE is a special case. It happens in -pipe mode
3019 when the compiler dies before the preprocessor is done,
3020 or the assembler dies before the compiler is done.
3021 There's generally been an error already, and this is
3022 just fallout. So don't generate another error unless
3023 we would otherwise have succeeded. */
3024 if (WTERMSIG (status) == SIGPIPE
3025 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
3033 Internal error: %s (program %s)\n\
3034 Please submit a full bug report.\n\
3035 See %s for instructions.",
3036 strsignal (WTERMSIG (status)), commands[i].prog,
3039 else if (WIFEXITED (status)
3040 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
3042 if (WEXITSTATUS (status) > greatest_status)
3043 greatest_status = WEXITSTATUS (status);
3049 struct pex_time *pt = ×[i];
3052 ut = ((double) pt->user_seconds
3053 + (double) pt->user_microseconds / 1.0e6);
3054 st = ((double) pt->system_seconds
3055 + (double) pt->system_microseconds / 1.0e6);
3058 notice ("# %s %.2f %.2f\n", commands[i].prog, ut, st);
3066 /* Find all the switches given to us
3067 and make a vector describing them.
3068 The elements of the vector are strings, one per switch given.
3069 If a switch uses following arguments, then the `part1' field
3070 is the switch itself and the `args' field
3071 is a null-terminated vector containing the following arguments.
3072 The `live_cond' field is:
3074 1 if the switch is true in a conditional spec,
3075 -1 if false (overridden by a later switch)
3076 -2 if this switch should be ignored (used in %<S)
3077 The `validated' field is nonzero if any spec has looked at this switch;
3078 if it remains zero at the end of the run, it must be meaningless. */
3081 #define SWITCH_FALSE -1
3082 #define SWITCH_IGNORE -2
3083 #define SWITCH_LIVE 1
3090 unsigned char validated;
3091 unsigned char ordering;
3094 static struct switchstr *switches;
3096 static int n_switches;
3098 /* Language is one of three things:
3100 1) The name of a real programming language.
3101 2) NULL, indicating that no one has figured out
3103 3) '*', indicating that the file should be passed
3108 const char *language;
3109 struct compiler *incompiler;
3114 /* Also a vector of input files specified. */
3116 static struct infile *infiles;
3120 /* True if multiple input files are being compiled to a single
3123 static bool combine_inputs;
3125 /* This counts the number of libraries added by lang_specific_driver, so that
3126 we can tell if there were any user supplied any files or libraries. */
3128 static int added_libraries;
3130 /* And a vector of corresponding output files is made up later. */
3132 const char **outfiles;
3134 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3136 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
3137 is true if we should look for an executable suffix. DO_OBJ
3138 is true if we should look for an object suffix. */
3141 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
3142 int do_obj ATTRIBUTE_UNUSED)
3144 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3152 len = strlen (name);
3154 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3155 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
3156 if (do_obj && len > 2
3157 && name[len - 2] == '.'
3158 && name[len - 1] == 'o')
3160 obstack_grow (&obstack, name, len - 2);
3161 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
3162 name = XOBFINISH (&obstack, const char *);
3166 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3167 /* If there is no filetype, make it the executable suffix (which includes
3168 the "."). But don't get confused if we have just "-o". */
3169 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
3172 for (i = len - 1; i >= 0; i--)
3173 if (IS_DIR_SEPARATOR (name[i]))
3176 for (i++; i < len; i++)
3180 obstack_grow (&obstack, name, len);
3181 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
3182 strlen (TARGET_EXECUTABLE_SUFFIX));
3183 name = XOBFINISH (&obstack, const char *);
3190 /* Display the command line switches accepted by gcc. */
3194 printf (_("Usage: %s [options] file...\n"), programname);
3195 fputs (_("Options:\n"), stdout);
3197 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
3198 fputs (_(" --help Display this information\n"), stdout);
3199 fputs (_(" --target-help Display target specific command line options\n"), stdout);
3201 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
3202 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
3203 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
3204 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
3205 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
3206 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
3207 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
3208 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
3209 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
3211 -print-multi-lib Display the mapping between command line options and\n\
3212 multiple library search directories\n"), stdout);
3213 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
3214 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3215 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3216 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3217 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
3218 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
3219 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3220 fputs (_(" -combine Pass multiple source files to compiler at once\n"), stdout);
3221 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3222 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3223 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3224 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3225 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3227 --sysroot=<directory> Use <directory> as the root directory for headers\n\
3228 and libraries\n"), stdout);
3229 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3230 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
3231 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
3232 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3233 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3234 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3235 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3236 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3237 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3239 -x <language> Specify the language of the following input files\n\
3240 Permissible languages include: c c++ assembler none\n\
3241 'none' means revert to the default behavior of\n\
3242 guessing the language based on the file's extension\n\
3246 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3247 passed on to the various sub-processes invoked by %s. In order to pass\n\
3248 other options on to these processes the -W<letter> options must be used.\n\
3251 /* The rest of the options are displayed by invocations of the various
3256 add_preprocessor_option (const char *option, int len)
3258 n_preprocessor_options++;
3260 if (! preprocessor_options)
3261 preprocessor_options = XNEWVEC (char *, n_preprocessor_options);
3263 preprocessor_options = xrealloc (preprocessor_options,
3264 n_preprocessor_options * sizeof (char *));
3266 preprocessor_options [n_preprocessor_options - 1] =
3267 save_string (option, len);
3271 add_assembler_option (const char *option, int len)
3273 n_assembler_options++;
3275 if (! assembler_options)
3276 assembler_options = XNEWVEC (char *, n_assembler_options);
3278 assembler_options = xrealloc (assembler_options,
3279 n_assembler_options * sizeof (char *));
3281 assembler_options [n_assembler_options - 1] = save_string (option, len);
3285 add_linker_option (const char *option, int len)
3289 if (! linker_options)
3290 linker_options = XNEWVEC (char *, n_linker_options);
3292 linker_options = xrealloc (linker_options,
3293 n_linker_options * sizeof (char *));
3295 linker_options [n_linker_options - 1] = save_string (option, len);
3298 /* Create the vector `switches' and its contents.
3299 Store its length in `n_switches'. */
3302 process_command (int argc, const char **argv)
3307 const char *spec_lang = 0;
3308 int last_language_n_infiles;
3309 int lang_n_infiles = 0;
3310 #ifdef MODIFY_TARGET_NAME
3311 int is_modify_target_name;
3315 GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3319 added_libraries = 0;
3321 /* Figure compiler version from version string. */
3323 compiler_version = temp1 = xstrdup (version_string);
3325 for (; *temp1; ++temp1)
3334 /* If there is a -V or -b option (or both), process it now, before
3335 trying to interpret the rest of the command line.
3336 Use heuristic that all configuration names must have at least
3337 one dash '-'. This allows us to pass options starting with -b. */
3338 if (argc > 1 && argv[1][0] == '-'
3339 && (argv[1][1] == 'V' ||
3340 ((argv[1][1] == 'b') && (NULL != strchr(argv[1] + 2,'-')))))
3342 const char *new_version = DEFAULT_TARGET_VERSION;
3343 const char *new_machine = DEFAULT_TARGET_MACHINE;
3344 const char *progname = argv[0];
3349 while (argc > 1 && argv[1][0] == '-'
3350 && (argv[1][1] == 'V' ||
3351 ((argv[1][1] == 'b') && ( NULL != strchr(argv[1] + 2,'-')))))
3353 char opt = argv[1][1];
3355 if (argv[1][2] != '\0')
3368 fatal ("'-%c' option must have argument", opt);
3375 for (baselen = strlen (progname); baselen > 0; baselen--)
3376 if (IS_DIR_SEPARATOR (progname[baselen-1]))
3378 new_argv0 = xmemdup (progname, baselen,
3379 baselen + concat_length (new_version, new_machine,
3380 "-gcc-", NULL) + 1);
3381 strcpy (new_argv0 + baselen, new_machine);
3382 strcat (new_argv0, "-gcc-");
3383 strcat (new_argv0, new_version);
3385 new_argv = xmemdup (argv, (argc + 1) * sizeof (argv[0]),
3386 (argc + 1) * sizeof (argv[0]));
3387 new_argv[0] = new_argv0;
3389 execvp (new_argv0, new_argv);
3390 fatal ("couldn't run '%s': %s", new_argv0, xstrerror (errno));
3393 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3394 see if we can create it from the pathname specified in argv[0]. */
3396 gcc_libexec_prefix = standard_libexec_prefix;
3397 #ifndef FREEBSD_NATIVE
3399 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3400 if (!gcc_exec_prefix)
3402 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
3403 standard_exec_prefix);
3404 gcc_libexec_prefix = make_relative_prefix (argv[0],
3405 standard_bindir_prefix,
3406 standard_libexec_prefix);
3407 if (gcc_exec_prefix)
3408 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3412 /* make_relative_prefix requires a program name, but
3413 GCC_EXEC_PREFIX is typically a directory name with a trailing
3414 / (which is ignored by make_relative_prefix), so append a
3416 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL);
3417 gcc_libexec_prefix = make_relative_prefix (tmp_prefix,
3418 standard_exec_prefix,
3419 standard_libexec_prefix);
3424 #endif /* not FREEBSD_NATIVE */
3426 if (gcc_exec_prefix)
3428 int len = strlen (gcc_exec_prefix);
3430 if (len > (int) sizeof ("/lib/gcc/") - 1
3431 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3433 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3434 if (IS_DIR_SEPARATOR (*temp)
3435 && strncmp (temp + 1, "lib", 3) == 0
3436 && IS_DIR_SEPARATOR (temp[4])
3437 && strncmp (temp + 5, "gcc", 3) == 0)
3438 len -= sizeof ("/lib/gcc/") - 1;
3441 set_std_prefix (gcc_exec_prefix, len);
3442 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3443 PREFIX_PRIORITY_LAST, 0, 0);
3444 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3445 PREFIX_PRIORITY_LAST, 0, 0);
3448 /* COMPILER_PATH and LIBRARY_PATH have values
3449 that are lists of directory names with colons. */
3451 GET_ENVIRONMENT (temp, "COMPILER_PATH");
3454 const char *startp, *endp;
3455 char *nstore = alloca (strlen (temp) + 3);
3457 startp = endp = temp;
3460 if (*endp == PATH_SEPARATOR || *endp == 0)
3462 strncpy (nstore, startp, endp - startp);
3464 strcpy (nstore, concat (".", dir_separator_str, NULL));
3465 else if (!IS_DIR_SEPARATOR (endp[-1]))
3467 nstore[endp - startp] = DIR_SEPARATOR;
3468 nstore[endp - startp + 1] = 0;
3471 nstore[endp - startp] = 0;
3472 add_prefix (&exec_prefixes, nstore, 0,
3473 PREFIX_PRIORITY_LAST, 0, 0);
3474 add_prefix (&include_prefixes, nstore, 0,
3475 PREFIX_PRIORITY_LAST, 0, 0);
3478 endp = startp = endp + 1;
3485 GET_ENVIRONMENT (temp, LIBRARY_PATH_ENV);
3486 if (temp && *cross_compile == '0')
3488 const char *startp, *endp;
3489 char *nstore = alloca (strlen (temp) + 3);
3491 startp = endp = temp;
3494 if (*endp == PATH_SEPARATOR || *endp == 0)
3496 strncpy (nstore, startp, endp - startp);
3498 strcpy (nstore, concat (".", dir_separator_str, NULL));
3499 else if (!IS_DIR_SEPARATOR (endp[-1]))
3501 nstore[endp - startp] = DIR_SEPARATOR;
3502 nstore[endp - startp + 1] = 0;
3505 nstore[endp - startp] = 0;
3506 add_prefix (&startfile_prefixes, nstore, NULL,
3507 PREFIX_PRIORITY_LAST, 0, 1);
3510 endp = startp = endp + 1;
3517 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3518 GET_ENVIRONMENT (temp, "LPATH");
3519 if (temp && *cross_compile == '0')
3521 const char *startp, *endp;
3522 char *nstore = alloca (strlen (temp) + 3);
3524 startp = endp = temp;
3527 if (*endp == PATH_SEPARATOR || *endp == 0)
3529 strncpy (nstore, startp, endp - startp);
3531 strcpy (nstore, concat (".", dir_separator_str, NULL));
3532 else if (!IS_DIR_SEPARATOR (endp[-1]))
3534 nstore[endp - startp] = DIR_SEPARATOR;
3535 nstore[endp - startp + 1] = 0;
3538 nstore[endp - startp] = 0;
3539 add_prefix (&startfile_prefixes, nstore, NULL,
3540 PREFIX_PRIORITY_LAST, 0, 1);
3543 endp = startp = endp + 1;
3550 /* Options specified as if they appeared on the command line. */
3551 temp = getenv ("GCC_OPTIONS");
3552 if ((temp) && (strlen (temp) > 0))
3557 const char **new_argv;
3560 while (isspace (*temp))
3562 len = strlen (temp);
3563 envopts = (char *) xmalloc (len + 1);
3564 strcpy (envopts, temp);
3566 for (i = 0; i < (len - 1); i++)
3567 if ((isspace (envopts[i])) && ! (isspace (envopts[i+1])))
3570 new_argv = (const char **) alloca ((optc + argc) * sizeof(char *));
3572 for (i = 0, new_argc = 1; new_argc <= optc; new_argc++)
3574 while (isspace (envopts[i]))
3576 new_argv[new_argc] = envopts + i;
3577 while (!isspace (envopts[i]) && (envopts[i] != '\0'))
3579 envopts[i++] = '\0';
3581 for (i = 1; i < argc; i++)
3582 new_argv[new_argc++] = argv[i];
3588 /* Convert new-style -- options to old-style. */
3589 translate_options (&argc, (const char *const **) &argv);
3591 /* Do language-specific adjustment/addition of flags. */
3592 lang_specific_driver (&argc, (const char *const **) &argv, &added_libraries);
3594 /* Scan argv twice. Here, the first time, just count how many switches
3595 there will be in their vector, and how many input files in theirs.
3596 Here we also parse the switches that cc itself uses (e.g. -v). */
3598 for (i = 1; i < argc; i++)
3600 if (! strcmp (argv[i], "-dumpspecs"))
3602 struct spec_list *sl;
3604 for (sl = specs; sl; sl = sl->next)
3605 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3606 if (link_command_spec)
3607 printf ("*link_command:\n%s\n\n", link_command_spec);
3610 else if (! strcmp (argv[i], "-dumpversion"))
3612 printf ("%s\n", spec_version);
3615 else if (! strcmp (argv[i], "-dumpmachine"))
3617 printf ("%s\n", spec_machine);
3620 else if (strcmp (argv[i], "-fversion") == 0)
3622 /* translate_options () has turned --version into -fversion. */
3623 printf (_("%s (GCC) %s\n"), programname, version_string);
3624 printf ("Copyright %s 2007 Free Software Foundation, Inc.\n",
3626 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
3627 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
3631 else if (strcmp (argv[i], "-fhelp") == 0)
3633 /* translate_options () has turned --help into -fhelp. */
3634 print_help_list = 1;
3636 /* We will be passing a dummy file on to the sub-processes. */
3640 /* CPP driver cannot obtain switch from cc1_options. */
3642 add_preprocessor_option ("--help", 6);
3643 add_assembler_option ("--help", 6);
3644 add_linker_option ("--help", 6);
3646 else if (strcmp (argv[i], "-ftarget-help") == 0)
3648 /* translate_options() has turned --target-help into -ftarget-help. */
3649 target_help_flag = 1;
3651 /* We will be passing a dummy file on to the sub-processes. */
3655 /* CPP driver cannot obtain switch from cc1_options. */
3657 add_preprocessor_option ("--target-help", 13);
3658 add_assembler_option ("--target-help", 13);
3659 add_linker_option ("--target-help", 13);
3661 else if (! strcmp (argv[i], "-pass-exit-codes"))
3663 pass_exit_codes = 1;
3666 else if (! strcmp (argv[i], "-print-search-dirs"))
3667 print_search_dirs = 1;
3668 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3669 print_file_name = "libgcc.a";
3670 else if (! strncmp (argv[i], "-print-file-name=", 17))
3671 print_file_name = argv[i] + 17;
3672 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3673 print_prog_name = argv[i] + 17;
3674 else if (! strcmp (argv[i], "-print-multi-lib"))
3675 print_multi_lib = 1;
3676 else if (! strcmp (argv[i], "-print-multi-directory"))
3677 print_multi_directory = 1;
3678 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3679 print_multi_os_directory = 1;
3680 else if (! strncmp (argv[i], "-Wa,", 4))
3683 /* Pass the rest of this option to the assembler. */
3685 /* Split the argument at commas. */
3687 for (j = 4; argv[i][j]; j++)
3688 if (argv[i][j] == ',')
3690 add_assembler_option (argv[i] + prev, j - prev);
3694 /* Record the part after the last comma. */
3695 add_assembler_option (argv[i] + prev, j - prev);
3697 else if (! strncmp (argv[i], "-Wp,", 4))
3700 /* Pass the rest of this option to the preprocessor. */
3702 /* Split the argument at commas. */
3704 for (j = 4; argv[i][j]; j++)
3705 if (argv[i][j] == ',')
3707 add_preprocessor_option (argv[i] + prev, j - prev);
3711 /* Record the part after the last comma. */
3712 add_preprocessor_option (argv[i] + prev, j - prev);
3714 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3715 /* The +e options to the C++ front-end. */
3717 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3720 /* Split the argument at commas. */
3721 for (j = 3; argv[i][j]; j++)
3722 n_infiles += (argv[i][j] == ',');
3724 else if (strcmp (argv[i], "-Xlinker") == 0)
3727 fatal ("argument to '-Xlinker' is missing");
3732 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3735 fatal ("argument to '-Xpreprocessor' is missing");
3737 add_preprocessor_option (argv[i+1], strlen (argv[i+1]));
3739 else if (strcmp (argv[i], "-Xassembler") == 0)
3742 fatal ("argument to '-Xassembler' is missing");
3744 add_assembler_option (argv[i+1], strlen (argv[i+1]));
3746 else if (strcmp (argv[i], "-l") == 0)
3749 fatal ("argument to '-l' is missing");
3754 else if (strncmp (argv[i], "-l", 2) == 0)
3756 else if (strcmp (argv[i], "-save-temps") == 0)
3758 save_temps_flag = 1;
3761 else if (strcmp (argv[i], "-combine") == 0)
3766 else if (strcmp (argv[i], "-specs") == 0)
3768 struct user_specs *user = XNEW (struct user_specs);
3770 fatal ("argument to '-specs' is missing");
3772 user->next = (struct user_specs *) 0;
3773 user->filename = argv[i];
3774 if (user_specs_tail)
3775 user_specs_tail->next = user;
3777 user_specs_head = user;
3778 user_specs_tail = user;
3780 else if (strncmp (argv[i], "-specs=", 7) == 0)
3782 struct user_specs *user = XNEW (struct user_specs);
3783 if (strlen (argv[i]) == 7)
3784 fatal ("argument to '-specs=' is missing");
3786 user->next = (struct user_specs *) 0;
3787 user->filename = argv[i] + 7;
3788 if (user_specs_tail)
3789 user_specs_tail->next = user;
3791 user_specs_head = user;
3792 user_specs_tail = user;
3794 else if (strcmp (argv[i], "-time") == 0)
3796 else if (strcmp (argv[i], "-pipe") == 0)
3798 /* -pipe has to go into the switches array as well as
3803 else if (strcmp (argv[i], "-###") == 0)
3805 /* This is similar to -v except that there is no execution
3806 of the commands and the echoed arguments are quoted. It
3807 is intended for use in shell scripts to capture the
3808 driver-generated command line. */
3809 verbose_only_flag++;
3812 else if (argv[i][0] == '-' && argv[i][1] != 0)
3814 const char *p = &argv[i][1];
3820 if (NULL == strchr(argv[i] + 2, '-'))
3825 fatal ("'-%c' must come at the start of the command line", c);
3833 if (p[1] == 0 && i + 1 == argc)
3834 fatal ("argument to '-B' is missing");
3840 len = strlen (value);
3842 /* Catch the case where the user has forgotten to append a
3843 directory separator to the path. Note, they may be using
3844 -B to add an executable name prefix, eg "i386-elf-", in
3845 order to distinguish between multiple installations of
3846 GCC in the same directory. Hence we must check to see
3847 if appending a directory separator actually makes a
3848 valid directory name. */
3849 if (! IS_DIR_SEPARATOR (value [len - 1])
3850 && is_directory (value, false))
3852 char *tmp = XNEWVEC (char, len + 2);
3853 strcpy (tmp, value);
3854 tmp[len] = DIR_SEPARATOR;
3859 /* As a kludge, if the arg is "[foo/]stageN/", just
3860 add "[foo/]include" to the include prefix. */
3863 && (IS_DIR_SEPARATOR (value[len - 8]))))
3864 && strncmp (value + len - 7, "stage", 5) == 0
3865 && ISDIGIT (value[len - 2])
3866 && (IS_DIR_SEPARATOR (value[len - 1])))
3869 add_prefix (&include_prefixes, "./", NULL,
3870 PREFIX_PRIORITY_B_OPT, 0, 0);
3873 char *string = xmalloc (len - 6);
3874 memcpy (string, value, len - 7);
3875 string[len - 7] = 0;
3876 add_prefix (&include_prefixes, string, NULL,
3877 PREFIX_PRIORITY_B_OPT, 0, 0);
3881 add_prefix (&exec_prefixes, value, NULL,
3882 PREFIX_PRIORITY_B_OPT, 0, 0);
3883 add_prefix (&startfile_prefixes, value, NULL,
3884 PREFIX_PRIORITY_B_OPT, 0, 0);
3885 add_prefix (&include_prefixes, value, NULL,
3886 PREFIX_PRIORITY_B_OPT, 0, 0);
3891 case 'v': /* Print our subcommands and print versions. */
3893 /* If they do anything other than exactly `-v', don't set
3894 verbose_flag; rather, continue on to give the error. */
3912 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3917 /* Forward scan, just in case -S or -c is specified
3924 if (argv[j][0] == '-')
3926 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
3932 else if ((skip = SWITCH_TAKES_ARG (argv[j][1])))
3933 j += skip - (argv[j][2] != 0);
3934 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1)))
3941 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3943 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0);
3945 argv[i] = convert_filename (argv[i], ! have_c, 0);
3952 #ifdef MODIFY_TARGET_NAME
3953 is_modify_target_name = 0;
3955 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3956 if (! strcmp (argv[i], modify_target[j].sw))
3958 char *new_name = xmalloc (strlen (modify_target[j].str)
3959 + strlen (spec_machine));
3962 int made_addition = 0;
3964 is_modify_target_name = 1;
3965 for (p = spec_machine, q = new_name; *p != 0; )
3967 if (modify_target[j].add_del == DELETE
3968 && (! strncmp (q, modify_target[j].str,
3969 strlen (modify_target[j].str))))
3970 p += strlen (modify_target[j].str);
3971 else if (modify_target[j].add_del == ADD
3972 && ! made_addition && *p == '-')
3974 for (r = modify_target[j].str; *r != 0; )
3982 spec_machine = new_name;
3985 if (is_modify_target_name)
3991 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
3992 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
3993 else if (WORD_SWITCH_TAKES_ARG (p))
3994 i += WORD_SWITCH_TAKES_ARG (p);
4004 if (save_temps_flag && use_pipes)
4006 /* -save-temps overrides -pipe, so that temp files are produced */
4007 if (save_temps_flag)
4008 error ("warning: -pipe ignored because -save-temps specified");
4012 /* Set up the search paths before we go looking for config files. */
4013 #ifdef FREEBSD_NATIVE
4014 add_prefix (&exec_prefixes, PREFIX"/bin/", "BINUTILS",
4015 PREFIX_PRIORITY_LAST, 0, 0);
4016 #endif /* FREEBSD_NATIVE */
4018 /* These come before the md prefixes so that we will find gcc's subcommands
4019 (such as cpp) rather than those of the host system. */
4020 /* Use 2 as fourth arg meaning try just the machine as a suffix,
4021 as well as trying the machine and the version. */
4023 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
4024 PREFIX_PRIORITY_LAST, 1, 0);
4025 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
4026 PREFIX_PRIORITY_LAST, 2, 0);
4027 #ifndef FREEBSD_NATIVE
4028 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
4029 PREFIX_PRIORITY_LAST, 2, 0);
4030 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS",
4031 PREFIX_PRIORITY_LAST, 2, 0);
4032 add_prefix (&exec_prefixes, standard_exec_prefix_2, "BINUTILS",
4033 PREFIX_PRIORITY_LAST, 2, 0);
4037 #ifndef FREEBSD_NATIVE
4038 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
4039 PREFIX_PRIORITY_LAST, 1, 0);
4040 add_prefix (&startfile_prefixes, standard_exec_prefix_2, "BINUTILS",
4041 PREFIX_PRIORITY_LAST, 1, 0);
4043 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
4044 dir_separator_str, NULL);
4046 /* If tooldir is relative, base it on exec_prefixes. A relative
4047 tooldir lets us move the installed tree as a unit.
4049 If GCC_EXEC_PREFIX is defined, then we want to add two relative
4050 directories, so that we can search both the user specified directory
4051 and the standard place. */
4053 if (!IS_ABSOLUTE_PATH (tooldir_prefix))
4055 if (gcc_exec_prefix)
4057 char *gcc_exec_tooldir_prefix
4058 = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
4059 spec_version, dir_separator_str, tooldir_prefix, NULL);
4061 add_prefix (&exec_prefixes,
4062 concat (gcc_exec_tooldir_prefix, "bin",
4063 dir_separator_str, NULL),
4064 NULL, PREFIX_PRIORITY_LAST, 0, 0);
4065 add_prefix (&startfile_prefixes,
4066 concat (gcc_exec_tooldir_prefix, "lib",
4067 dir_separator_str, NULL),
4068 NULL, PREFIX_PRIORITY_LAST, 0, 1);
4071 tooldir_prefix = concat (standard_exec_prefix, spec_machine,
4072 dir_separator_str, spec_version,
4073 dir_separator_str, tooldir_prefix, NULL);
4076 add_prefix (&exec_prefixes,
4077 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
4078 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0);
4079 add_prefix (&startfile_prefixes,
4080 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
4081 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1);
4083 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
4084 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
4085 then consider it to relocate with the rest of the GCC installation
4086 if GCC_EXEC_PREFIX is set.
4087 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
4088 if (target_system_root && gcc_exec_prefix)
4090 char *tmp_prefix = make_relative_prefix (argv[0],
4091 standard_bindir_prefix,
4092 target_system_root);
4093 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
4095 target_system_root = tmp_prefix;
4096 target_system_root_changed = 1;
4100 #endif /* FREEBSD_NATIVE */
4102 /* More prefixes are enabled in main, after we read the specs file
4103 and determine whether this is cross-compilation or not. */
4105 /* Then create the space for the vectors and scan again. */
4107 switches = XNEWVEC (struct switchstr, n_switches + 1);
4108 infiles = XNEWVEC (struct infile, n_infiles + 1);
4111 last_language_n_infiles = -1;
4113 /* This, time, copy the text of each switch and store a pointer
4114 to the copy in the vector of switches.
4115 Store all the infiles in their vector. */
4117 for (i = 1; i < argc; i++)
4119 /* Just skip the switches that were handled by the preceding loop. */
4120 #ifdef MODIFY_TARGET_NAME
4121 is_modify_target_name = 0;
4123 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
4124 if (! strcmp (argv[i], modify_target[j].sw))
4125 is_modify_target_name = 1;
4127 if (is_modify_target_name)
4131 if (! strncmp (argv[i], "-Wa,", 4))
4133 else if (! strncmp (argv[i], "-Wp,", 4))
4135 else if (! strcmp (argv[i], "-pass-exit-codes"))
4137 else if (! strcmp (argv[i], "-print-search-dirs"))
4139 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
4141 else if (! strncmp (argv[i], "-print-file-name=", 17))
4143 else if (! strncmp (argv[i], "-print-prog-name=", 17))
4145 else if (! strcmp (argv[i], "-print-multi-lib"))
4147 else if (! strcmp (argv[i], "-print-multi-directory"))
4149 else if (! strcmp (argv[i], "-print-multi-os-directory"))
4151 else if (! strcmp (argv[i], "-ftarget-help"))
4153 else if (! strcmp (argv[i], "-fhelp"))
4155 else if (! strncmp (argv[i], "--sysroot=", strlen ("--sysroot=")))
4157 target_system_root = argv[i] + strlen ("--sysroot=");
4158 target_system_root_changed = 1;
4160 else if (argv[i][0] == '+' && argv[i][1] == 'e')
4162 /* Compensate for the +e options to the C++ front-end;
4163 they're there simply for cfront call-compatibility. We do
4164 some magic in default_compilers to pass them down properly.
4165 Note we deliberately start at the `+' here, to avoid passing
4166 -e0 or -e1 down into the linker. */
4167 switches[n_switches].part1 = &argv[i][0];
4168 switches[n_switches].args = 0;
4169 switches[n_switches].live_cond = SWITCH_OK;
4170 switches[n_switches].validated = 0;
4173 else if (strncmp (argv[i], "-Wl,", 4) == 0)
4176 /* Split the argument at commas. */
4178 for (j = 4; argv[i][j]; j++)
4179 if (argv[i][j] == ',')
4181 infiles[n_infiles].language = "*";
4182 infiles[n_infiles++].name
4183 = save_string (argv[i] + prev, j - prev);
4186 /* Record the part after the last comma. */
4187 infiles[n_infiles].language = "*";
4188 infiles[n_infiles++].name = argv[i] + prev;
4190 else if (strcmp (argv[i], "-Xlinker") == 0)
4192 infiles[n_infiles].language = "*";
4193 infiles[n_infiles++].name = argv[++i];
4195 /* Xassembler and Xpreprocessor were already handled in the first argv
4196 scan, so all we need to do here is ignore them and their argument. */
4197 else if (strcmp (argv[i], "-Xassembler") == 0)
4199 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
4201 else if (strcmp (argv[i], "-l") == 0)
4202 { /* POSIX allows separation of -l and the lib arg;
4203 canonicalize by concatenating -l with its arg */
4204 infiles[n_infiles].language = "*";
4205 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL);
4207 else if (strncmp (argv[i], "-l", 2) == 0)
4209 infiles[n_infiles].language = "*";
4210 infiles[n_infiles++].name = argv[i];
4212 else if (strcmp (argv[i], "-specs") == 0)
4214 else if (strncmp (argv[i], "-specs=", 7) == 0)
4216 else if (strcmp (argv[i], "-time") == 0)
4218 else if (strcmp (argv[i], "-###") == 0)
4220 else if (argv[i][0] == '-' && argv[i][1] != 0)
4222 const char *p = &argv[i][1];
4227 if (p[1] == 0 && i + 1 == argc)
4228 fatal ("argument to '-x' is missing");
4230 spec_lang = argv[++i];
4233 if (! strcmp (spec_lang, "none"))
4234 /* Suppress the warning if -xnone comes after the last input
4235 file, because alternate command interfaces like g++ might
4236 find it useful to place -xnone after each input file. */
4239 last_language_n_infiles = n_infiles;
4242 switches[n_switches].part1 = p;
4243 /* Deal with option arguments in separate argv elements. */
4244 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
4245 || WORD_SWITCH_TAKES_ARG (p))
4248 int n_args = WORD_SWITCH_TAKES_ARG (p);
4252 /* Count only the option arguments in separate argv elements. */
4253 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
4255 if (i + n_args >= argc)
4256 fatal ("argument to '-%s' is missing", p);
4257 switches[n_switches].args
4258 = XNEWVEC (const char *, n_args + 1);
4260 switches[n_switches].args[j++] = argv[++i];
4261 /* Null-terminate the vector. */
4262 switches[n_switches].args[j] = 0;
4264 else if (strchr (switches_need_spaces, c))
4266 /* On some systems, ld cannot handle some options without
4267 a space. So split the option from its argument. */
4268 char *part1 = XNEWVEC (char, 2);
4272 switches[n_switches].part1 = part1;
4273 switches[n_switches].args = XNEWVEC (const char *, 2);
4274 switches[n_switches].args[0] = xstrdup (p+1);
4275 switches[n_switches].args[1] = 0;
4278 switches[n_switches].args = 0;
4280 switches[n_switches].live_cond = SWITCH_OK;
4281 switches[n_switches].validated = 0;
4282 switches[n_switches].ordering = 0;
4283 /* These are always valid, since gcc.c itself understands them. */
4284 if (!strcmp (p, "save-temps")
4285 || !strcmp (p, "static-libgcc")
4286 || !strcmp (p, "shared-libgcc")
4287 || !strcmp (p, "pipe"))
4288 switches[n_switches].validated = 1;
4291 char ch = switches[n_switches].part1[0];
4293 switches[n_switches].validated = 1;
4299 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4300 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
4303 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
4305 perror_with_name (argv[i]);
4310 infiles[n_infiles].language = spec_lang;
4311 infiles[n_infiles++].name = argv[i];
4316 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4317 error ("warning: '-x %s' after last input file has no effect", spec_lang);
4319 /* Ensure we only invoke each subprocess once. */
4320 if (target_help_flag || print_help_list)
4324 /* Create a dummy input file, so that we can pass --target-help on to
4325 the various sub-processes. */
4326 infiles[0].language = "c";
4327 infiles[0].name = "help-dummy";
4329 if (target_help_flag)
4331 switches[n_switches].part1 = "--target-help";
4332 switches[n_switches].args = 0;
4333 switches[n_switches].live_cond = SWITCH_OK;
4334 switches[n_switches].validated = 0;
4339 if (print_help_list)
4341 switches[n_switches].part1 = "--help";
4342 switches[n_switches].args = 0;
4343 switches[n_switches].live_cond = SWITCH_OK;
4344 switches[n_switches].validated = 0;
4350 switches[n_switches].part1 = 0;
4351 infiles[n_infiles].name = 0;
4354 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4355 and place that in the environment. */
4358 set_collect_gcc_options (void)
4363 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4365 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4366 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4369 for (i = 0; (int) i < n_switches; i++)
4371 const char *const *args;
4374 obstack_grow (&collect_obstack, " ", 1);
4378 /* Ignore elided switches. */
4379 if (switches[i].live_cond == SWITCH_IGNORE)
4382 obstack_grow (&collect_obstack, "'-", 2);
4383 q = switches[i].part1;
4384 while ((p = strchr (q, '\'')))
4386 obstack_grow (&collect_obstack, q, p - q);
4387 obstack_grow (&collect_obstack, "'\\''", 4);
4390 obstack_grow (&collect_obstack, q, strlen (q));
4391 obstack_grow (&collect_obstack, "'", 1);
4393 for (args = switches[i].args; args && *args; args++)
4395 obstack_grow (&collect_obstack, " '", 2);
4397 while ((p = strchr (q, '\'')))
4399 obstack_grow (&collect_obstack, q, p - q);
4400 obstack_grow (&collect_obstack, "'\\''", 4);
4403 obstack_grow (&collect_obstack, q, strlen (q));
4404 obstack_grow (&collect_obstack, "'", 1);
4407 obstack_grow (&collect_obstack, "\0", 1);
4408 putenv (XOBFINISH (&collect_obstack, char *));
4411 /* Process a spec string, accumulating and running commands. */
4413 /* These variables describe the input file name.
4414 input_file_number is the index on outfiles of this file,
4415 so that the output file name can be stored for later use by %o.
4416 input_basename is the start of the part of the input file
4417 sans all directory names, and basename_length is the number
4418 of characters starting there excluding the suffix .c or whatever. */
4420 static const char *input_filename;
4421 static int input_file_number;
4422 size_t input_filename_length;
4423 static int basename_length;
4424 static int suffixed_basename_length;
4425 static const char *input_basename;
4426 static const char *input_suffix;
4427 #ifndef HOST_LACKS_INODE_NUMBERS
4428 static struct stat input_stat;
4430 static int input_stat_set;
4432 /* The compiler used to process the current input file. */
4433 static struct compiler *input_file_compiler;
4435 /* These are variables used within do_spec and do_spec_1. */
4437 /* Nonzero if an arg has been started and not yet terminated
4438 (with space, tab or newline). */
4439 static int arg_going;
4441 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4442 is a temporary file name. */
4443 static int delete_this_arg;
4445 /* Nonzero means %w has been seen; the next arg to be terminated
4446 is the output file name of this compilation. */
4447 static int this_is_output_file;
4449 /* Nonzero means %s has been seen; the next arg to be terminated
4450 is the name of a library file and we should try the standard
4451 search dirs for it. */
4452 static int this_is_library_file;
4454 /* Nonzero means that the input of this command is coming from a pipe. */
4455 static int input_from_pipe;
4457 /* Nonnull means substitute this for any suffix when outputting a switches
4459 static const char *suffix_subst;
4461 /* Process the spec SPEC and run the commands specified therein.
4462 Returns 0 if the spec is successfully processed; -1 if failed. */
4465 do_spec (const char *spec)
4469 value = do_spec_2 (spec);
4471 /* Force out any unfinished command.
4472 If -pipe, this forces out the last command if it ended in `|'. */
4475 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4478 set_collect_gcc_options ();
4480 if (argbuf_index > 0)
4488 do_spec_2 (const char *spec)
4495 delete_this_arg = 0;
4496 this_is_output_file = 0;
4497 this_is_library_file = 0;
4498 input_from_pipe = 0;
4499 suffix_subst = NULL;
4501 result = do_spec_1 (spec, 0, NULL);
4503 /* End any pending argument. */
4506 obstack_1grow (&obstack, 0);
4507 string = XOBFINISH (&obstack, const char *);
4508 if (this_is_library_file)
4509 string = find_file (string);
4510 store_arg (string, delete_this_arg, this_is_output_file);
4511 if (this_is_output_file)
4512 outfiles[input_file_number] = string;
4520 /* Process the given spec string and add any new options to the end
4521 of the switches/n_switches array. */
4524 do_option_spec (const char *name, const char *spec)
4526 unsigned int i, value_count, value_len;
4527 const char *p, *q, *value;
4528 char *tmp_spec, *tmp_spec_p;
4530 if (configure_default_options[0].name == NULL)
4533 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4534 if (strcmp (configure_default_options[i].name, name) == 0)
4536 if (i == ARRAY_SIZE (configure_default_options))
4539 value = configure_default_options[i].value;
4540 value_len = strlen (value);
4542 /* Compute the size of the final spec. */
4545 while ((p = strstr (p, "%(VALUE)")) != NULL)
4551 /* Replace each %(VALUE) by the specified value. */
4552 tmp_spec = alloca (strlen (spec) + 1
4553 + value_count * (value_len - strlen ("%(VALUE)")));
4554 tmp_spec_p = tmp_spec;
4556 while ((p = strstr (q, "%(VALUE)")) != NULL)
4558 memcpy (tmp_spec_p, q, p - q);
4559 tmp_spec_p = tmp_spec_p + (p - q);
4560 memcpy (tmp_spec_p, value, value_len);
4561 tmp_spec_p += value_len;
4562 q = p + strlen ("%(VALUE)");
4564 strcpy (tmp_spec_p, q);
4566 do_self_spec (tmp_spec);
4569 /* Process the given spec string and add any new options to the end
4570 of the switches/n_switches array. */
4573 do_self_spec (const char *spec)
4576 do_spec_1 (" ", 0, NULL);
4578 if (argbuf_index > 0)
4583 n_switches += argbuf_index;
4584 switches = xrealloc (switches,
4585 sizeof (struct switchstr) * (n_switches + 1));
4587 switches[n_switches] = switches[first];
4588 for (i = 0; i < argbuf_index; i++)
4590 struct switchstr *sw;
4592 /* Each switch should start with '-'. */
4593 if (argbuf[i][0] != '-')
4594 fatal ("switch '%s' does not start with '-'", argbuf[i]);
4596 sw = &switches[i + first];
4597 sw->part1 = &argbuf[i][1];
4599 sw->live_cond = SWITCH_OK;
4606 /* Callback for processing %D and %I specs. */
4608 struct spec_path_info {
4613 bool separate_options;
4617 spec_path (char *path, void *data)
4619 struct spec_path_info *info = data;
4623 if (info->omit_relative && !IS_ABSOLUTE_PATH (path))
4626 if (info->append_len != 0)
4628 len = strlen (path);
4629 memcpy (path + len, info->append, info->append_len + 1);
4632 if (!is_directory (path, true))
4635 do_spec_1 (info->option, 1, NULL);
4636 if (info->separate_options)
4637 do_spec_1 (" ", 0, NULL);
4639 if (info->append_len == 0)
4641 len = strlen (path);
4642 save = path[len - 1];
4643 if (IS_DIR_SEPARATOR (path[len - 1]))
4644 path[len - 1] = '\0';
4647 do_spec_1 (path, 1, NULL);
4648 do_spec_1 (" ", 0, NULL);
4650 /* Must not damage the original path. */
4651 if (info->append_len == 0)
4652 path[len - 1] = save;
4657 /* Process the sub-spec SPEC as a portion of a larger spec.
4658 This is like processing a whole spec except that we do
4659 not initialize at the beginning and we do not supply a
4660 newline by default at the end.
4661 INSWITCH nonzero means don't process %-sequences in SPEC;
4662 in this case, % is treated as an ordinary character.
4663 This is used while substituting switches.
4664 INSWITCH nonzero also causes SPC not to terminate an argument.
4666 Value is zero unless a line was finished
4667 and the command on that line reported an error. */
4670 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4672 const char *p = spec;
4679 /* If substituting a switch, treat all chars like letters.
4680 Otherwise, NL, SPC, TAB and % are special. */
4681 switch (inswitch ? 'a' : c)
4684 /* End of line: finish any pending argument,
4685 then run the pending command if one has been started. */
4688 obstack_1grow (&obstack, 0);
4689 string = XOBFINISH (&obstack, const char *);
4690 if (this_is_library_file)
4691 string = find_file (string);
4692 store_arg (string, delete_this_arg, this_is_output_file);
4693 if (this_is_output_file)
4694 outfiles[input_file_number] = string;
4698 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4700 /* A `|' before the newline means use a pipe here,
4701 but only if -pipe was specified.
4702 Otherwise, execute now and don't pass the `|' as an arg. */
4705 input_from_pipe = 1;
4712 set_collect_gcc_options ();
4714 if (argbuf_index > 0)
4720 /* Reinitialize for a new command, and for a new argument. */
4723 delete_this_arg = 0;
4724 this_is_output_file = 0;
4725 this_is_library_file = 0;
4726 input_from_pipe = 0;
4730 /* End any pending argument. */
4733 obstack_1grow (&obstack, 0);
4734 string = XOBFINISH (&obstack, const char *);
4735 if (this_is_library_file)
4736 string = find_file (string);
4737 store_arg (string, delete_this_arg, this_is_output_file);
4738 if (this_is_output_file)
4739 outfiles[input_file_number] = string;
4743 obstack_1grow (&obstack, c);
4749 /* Space or tab ends an argument if one is pending. */
4752 obstack_1grow (&obstack, 0);
4753 string = XOBFINISH (&obstack, const char *);
4754 if (this_is_library_file)
4755 string = find_file (string);
4756 store_arg (string, delete_this_arg, this_is_output_file);
4757 if (this_is_output_file)
4758 outfiles[input_file_number] = string;
4760 /* Reinitialize for a new argument. */
4762 delete_this_arg = 0;
4763 this_is_output_file = 0;
4764 this_is_library_file = 0;
4771 fatal ("spec '%s' invalid", spec);
4774 obstack_grow (&obstack, input_basename, basename_length);
4779 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4784 delete_this_arg = 2;
4787 /* Dump out the directories specified with LIBRARY_PATH,
4788 followed by the absolute directories
4789 that we search for startfiles. */
4792 struct spec_path_info info;
4795 info.append_len = 0;
4796 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4797 /* Used on systems which record the specified -L dirs
4798 and use them to search for dynamic linking.
4799 Relative directories always come from -B,
4800 and it is better not to use them for searching
4801 at run time. In particular, stage1 loses. */
4802 info.omit_relative = true;
4804 info.omit_relative = false;
4806 info.separate_options = false;
4808 for_each_path (&startfile_prefixes, true, 0, spec_path, &info);
4813 /* %efoo means report an error with `foo' as error message
4814 and don't execute any more commands for this file. */
4818 while (*p != 0 && *p != '\n')
4820 buf = alloca (p - q + 1);
4821 strncpy (buf, q, p - q);
4828 /* %nfoo means report a notice with `foo' on stderr. */
4832 while (*p != 0 && *p != '\n')
4834 buf = alloca (p - q + 1);
4835 strncpy (buf, q, p - q);
4837 notice ("%s\n", buf);
4847 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4848 defined, and it is not a directory, and it is
4849 writable, use it. Otherwise, treat this like any
4850 other temporary file. */
4852 if ((!save_temps_flag)
4853 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4854 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4856 obstack_grow (&obstack, HOST_BIT_BUCKET,
4857 strlen (HOST_BIT_BUCKET));
4858 delete_this_arg = 0;
4863 goto create_temp_file;
4867 obstack_1grow (&obstack, '-');
4868 delete_this_arg = 0;
4871 /* consume suffix */
4872 while (*p == '.' || ISALNUM ((unsigned char) *p))
4874 if (p[0] == '%' && p[1] == 'O')
4879 goto create_temp_file;
4883 /* consume suffix */
4884 while (*p == '.' || ISALNUM ((unsigned char) *p))
4886 if (p[0] == '%' && p[1] == 'O')
4891 goto create_temp_file;
4897 struct temp_name *t;
4899 const char *suffix = p;
4900 char *saved_suffix = NULL;
4902 while (*p == '.' || ISALNUM ((unsigned char) *p))
4904 suffix_length = p - suffix;
4905 if (p[0] == '%' && p[1] == 'O')
4908 /* We don't support extra suffix characters after %O. */
4909 if (*p == '.' || ISALNUM ((unsigned char) *p))
4910 fatal ("spec '%s' has invalid '%%0%c'", spec, *p);
4911 if (suffix_length == 0)
4912 suffix = TARGET_OBJECT_SUFFIX;
4916 = XNEWVEC (char, suffix_length
4917 + strlen (TARGET_OBJECT_SUFFIX));
4918 strncpy (saved_suffix, suffix, suffix_length);
4919 strcpy (saved_suffix + suffix_length,
4920 TARGET_OBJECT_SUFFIX);
4922 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4925 /* If the input_filename has the same suffix specified
4926 for the %g, %u, or %U, and -save-temps is specified,
4927 we could end up using that file as an intermediate
4928 thus clobbering the user's source file (.e.g.,
4929 gcc -save-temps foo.s would clobber foo.s with the
4930 output of cpp0). So check for this condition and
4931 generate a temp file as the intermediate. */
4933 if (save_temps_flag)
4935 temp_filename_length = basename_length + suffix_length;
4936 temp_filename = alloca (temp_filename_length + 1);
4937 strncpy ((char *) temp_filename, input_basename, basename_length);
4938 strncpy ((char *) temp_filename + basename_length, suffix,
4940 *((char *) temp_filename + temp_filename_length) = '\0';
4941 if (strcmp (temp_filename, input_filename) != 0)
4943 #ifndef HOST_LACKS_INODE_NUMBERS
4944 struct stat st_temp;
4946 /* Note, set_input() resets input_stat_set to 0. */
4947 if (input_stat_set == 0)
4949 input_stat_set = stat (input_filename, &input_stat);
4950 if (input_stat_set >= 0)
4954 /* If we have the stat for the input_filename
4955 and we can do the stat for the temp_filename
4956 then the they could still refer to the same
4957 file if st_dev/st_ino's are the same. */
4958 if (input_stat_set != 1
4959 || stat (temp_filename, &st_temp) < 0
4960 || input_stat.st_dev != st_temp.st_dev
4961 || input_stat.st_ino != st_temp.st_ino)
4963 /* Just compare canonical pathnames. */
4964 char* input_realname = lrealpath (input_filename);
4965 char* temp_realname = lrealpath (temp_filename);
4966 bool files_differ = strcmp (input_realname, temp_realname);
4967 free (input_realname);
4968 free (temp_realname);
4972 temp_filename = save_string (temp_filename,
4973 temp_filename_length + 1);
4974 obstack_grow (&obstack, temp_filename,
4975 temp_filename_length);
4977 delete_this_arg = 0;
4983 /* See if we already have an association of %g/%u/%U and
4985 for (t = temp_names; t; t = t->next)
4986 if (t->length == suffix_length
4987 && strncmp (t->suffix, suffix, suffix_length) == 0
4988 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
4991 /* Make a new association if needed. %u and %j
4993 if (t == 0 || c == 'u' || c == 'j')
4997 t = xmalloc (sizeof (struct temp_name));
4998 t->next = temp_names;
5001 t->length = suffix_length;
5004 t->suffix = saved_suffix;
5005 saved_suffix = NULL;
5008 t->suffix = save_string (suffix, suffix_length);
5009 t->unique = (c == 'u' || c == 'U' || c == 'j');
5010 temp_filename = make_temp_file (t->suffix);
5011 temp_filename_length = strlen (temp_filename);
5012 t->filename = temp_filename;
5013 t->filename_length = temp_filename_length;
5017 free (saved_suffix);
5019 obstack_grow (&obstack, t->filename, t->filename_length);
5020 delete_this_arg = 1;
5028 for (i = 0; (int) i < n_infiles; i++)
5029 if ((!infiles[i].language) || (infiles[i].language[0] != '*'))
5030 if (infiles[i].incompiler == input_file_compiler)
5032 store_arg (infiles[i].name, 0, 0);
5033 infiles[i].compiled = true;
5038 obstack_grow (&obstack, input_filename, input_filename_length);
5045 struct spec_path_info info;
5049 do_spec_1 ("-imultilib", 1, NULL);
5050 /* Make this a separate argument. */
5051 do_spec_1 (" ", 0, NULL);
5052 do_spec_1 (multilib_dir, 1, NULL);
5053 do_spec_1 (" ", 0, NULL);
5056 if (gcc_exec_prefix)
5058 do_spec_1 ("-iprefix", 1, NULL);
5059 /* Make this a separate argument. */
5060 do_spec_1 (" ", 0, NULL);
5061 do_spec_1 (gcc_exec_prefix, 1, NULL);
5062 do_spec_1 (" ", 0, NULL);
5065 if (target_system_root_changed ||
5066 (target_system_root && target_sysroot_hdrs_suffix))
5068 do_spec_1 ("-isysroot", 1, NULL);
5069 /* Make this a separate argument. */
5070 do_spec_1 (" ", 0, NULL);
5071 do_spec_1 (target_system_root, 1, NULL);
5072 if (target_sysroot_hdrs_suffix)
5073 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
5074 do_spec_1 (" ", 0, NULL);
5077 info.option = "-isystem";
5078 info.append = "include";
5079 info.append_len = strlen (info.append);
5080 info.omit_relative = false;
5081 info.separate_options = true;
5083 for_each_path (&include_prefixes, false, info.append_len,
5090 int max = n_infiles;
5091 max += lang_specific_extra_outfiles;
5093 for (i = 0; i < max; i++)
5095 store_arg (outfiles[i], 0, 0);
5100 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
5105 this_is_library_file = 1;
5109 outfiles[input_file_number] = NULL;
5113 this_is_output_file = 1;
5118 int cur_index = argbuf_index;
5119 /* Handle the {...} following the %W. */
5121 fatal ("spec '%s' has invalid '%%W%c", spec, *p);
5122 p = handle_braces (p + 1);
5125 /* End any pending argument. */
5128 obstack_1grow (&obstack, 0);
5129 string = XOBFINISH (&obstack, const char *);
5130 if (this_is_library_file)
5131 string = find_file (string);
5132 store_arg (string, delete_this_arg, this_is_output_file);
5133 if (this_is_output_file)
5134 outfiles[input_file_number] = string;
5137 /* If any args were output, mark the last one for deletion
5139 if (argbuf_index != cur_index)
5140 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
5144 /* %x{OPTION} records OPTION for %X to output. */
5150 /* Skip past the option value and make a copy. */
5152 fatal ("spec '%s' has invalid '%%x%c'", spec, *p);
5155 string = save_string (p1 + 1, p - p1 - 2);
5157 /* See if we already recorded this option. */
5158 for (i = 0; i < n_linker_options; i++)
5159 if (! strcmp (string, linker_options[i]))
5165 /* This option is new; add it. */
5166 add_linker_option (string, strlen (string));
5170 /* Dump out the options accumulated previously using %x. */
5172 for (i = 0; i < n_linker_options; i++)
5174 do_spec_1 (linker_options[i], 1, NULL);
5175 /* Make each accumulated option a separate argument. */
5176 do_spec_1 (" ", 0, NULL);
5180 /* Dump out the options accumulated previously using -Wa,. */
5182 for (i = 0; i < n_assembler_options; i++)
5184 do_spec_1 (assembler_options[i], 1, NULL);
5185 /* Make each accumulated option a separate argument. */
5186 do_spec_1 (" ", 0, NULL);
5190 /* Dump out the options accumulated previously using -Wp,. */
5192 for (i = 0; i < n_preprocessor_options; i++)
5194 do_spec_1 (preprocessor_options[i], 1, NULL);
5195 /* Make each accumulated option a separate argument. */
5196 do_spec_1 (" ", 0, NULL);
5200 /* Here are digits and numbers that just process
5201 a certain constant string as a spec. */
5204 value = do_spec_1 (cc1_spec, 0, NULL);
5210 value = do_spec_1 (cc1plus_spec, 0, NULL);
5216 value = do_spec_1 (asm_spec, 0, NULL);
5222 value = do_spec_1 (asm_final_spec, 0, NULL);
5229 const char *const spec
5230 = (input_file_compiler->cpp_spec
5231 ? input_file_compiler->cpp_spec
5233 value = do_spec_1 (spec, 0, NULL);
5240 value = do_spec_1 (endfile_spec, 0, NULL);
5246 value = do_spec_1 (link_spec, 0, NULL);
5252 value = do_spec_1 (lib_spec, 0, NULL);
5258 value = do_spec_1 (libgcc_spec, 0, NULL);
5264 /* We assume there is a directory
5265 separator at the end of this string. */
5266 if (target_system_root)
5268 obstack_grow (&obstack, target_system_root,
5269 strlen (target_system_root));
5270 if (target_sysroot_suffix)
5271 obstack_grow (&obstack, target_sysroot_suffix,
5272 strlen (target_sysroot_suffix));
5277 value = do_spec_1 (startfile_spec, 0, NULL);
5282 /* Here we define characters other than letters and digits. */
5285 p = handle_braces (p);
5291 p = handle_spec_function (p);
5297 obstack_1grow (&obstack, '%');
5304 while (p[len] && p[len] != ' ' && p[len] != '%')
5306 suffix_subst = save_string (p - 1, len + 1);
5311 /* Henceforth ignore the option(s) matching the pattern
5316 int have_wildcard = 0;
5319 while (p[len] && p[len] != ' ' && p[len] != '\t')
5322 if (p[len-1] == '*')
5325 for (i = 0; i < n_switches; i++)
5326 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5327 && (have_wildcard || switches[i].part1[len] == '\0'))
5329 switches[i].live_cond = SWITCH_IGNORE;
5330 switches[i].validated = 1;
5338 if (soft_matched_part)
5340 do_spec_1 (soft_matched_part, 1, NULL);
5341 do_spec_1 (" ", 0, NULL);
5344 /* Catch the case where a spec string contains something like
5345 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5346 hand side of the :. */
5347 error ("spec failure: '%%*' has not been initialized by pattern match");
5350 /* Process a string found as the value of a spec given by name.
5351 This feature allows individual machine descriptions
5352 to add and use their own specs.
5353 %[...] modifies -D options the way %P does;
5354 %(...) uses the spec unmodified. */
5356 error ("warning: use of obsolete %%[ operator in specs");
5359 const char *name = p;
5360 struct spec_list *sl;
5363 /* The string after the S/P is the name of a spec that is to be
5365 while (*p && *p != ')' && *p != ']')
5368 /* See if it's in the list. */
5369 for (len = p - name, sl = specs; sl; sl = sl->next)
5370 if (sl->name_len == len && !strncmp (sl->name, name, len))
5372 name = *(sl->ptr_spec);
5374 notice ("Processing spec %c%s%c, which is '%s'\n",
5375 c, sl->name, (c == '(') ? ')' : ']', name);
5384 value = do_spec_1 (name, 0, NULL);
5390 char *x = alloca (strlen (name) * 2 + 1);
5392 const char *y = name;
5395 /* Copy all of NAME into BUF, but put __ after
5396 every -D and at the end of each arg. */
5399 if (! strncmp (y, "-D", 2))
5410 && (*y == ' ' || *y == '\t' || *y == '='
5411 || *y == '}' || *y == 0))
5424 value = do_spec_1 (buf, 0, NULL);
5430 /* Discard the closing paren or bracket. */
5437 error ("spec failure: unrecognized spec option '%c'", c);
5443 /* Backslash: treat next character as ordinary. */
5448 /* Ordinary character: put it into the current argument. */
5449 obstack_1grow (&obstack, c);
5453 /* End of string. If we are processing a spec function, we need to
5454 end any pending argument. */
5455 if (processing_spec_function && arg_going)
5457 obstack_1grow (&obstack, 0);
5458 string = XOBFINISH (&obstack, const char *);
5459 if (this_is_library_file)
5460 string = find_file (string);
5461 store_arg (string, delete_this_arg, this_is_output_file);
5462 if (this_is_output_file)
5463 outfiles[input_file_number] = string;
5470 /* Look up a spec function. */
5472 static const struct spec_function *
5473 lookup_spec_function (const char *name)
5475 const struct spec_function *sf;
5477 for (sf = static_spec_functions; sf->name != NULL; sf++)
5478 if (strcmp (sf->name, name) == 0)
5484 /* Evaluate a spec function. */
5487 eval_spec_function (const char *func, const char *args)
5489 const struct spec_function *sf;
5490 const char *funcval;
5492 /* Saved spec processing context. */
5493 int save_argbuf_index;
5494 int save_argbuf_length;
5495 const char **save_argbuf;
5498 int save_delete_this_arg;
5499 int save_this_is_output_file;
5500 int save_this_is_library_file;
5501 int save_input_from_pipe;
5502 const char *save_suffix_subst;
5505 sf = lookup_spec_function (func);
5507 fatal ("unknown spec function '%s'", func);
5509 /* Push the spec processing context. */
5510 save_argbuf_index = argbuf_index;
5511 save_argbuf_length = argbuf_length;
5512 save_argbuf = argbuf;
5514 save_arg_going = arg_going;
5515 save_delete_this_arg = delete_this_arg;
5516 save_this_is_output_file = this_is_output_file;
5517 save_this_is_library_file = this_is_library_file;
5518 save_input_from_pipe = input_from_pipe;
5519 save_suffix_subst = suffix_subst;
5521 /* Create a new spec processing context, and build the function
5525 if (do_spec_2 (args) < 0)
5526 fatal ("error in args to spec function '%s'", func);
5528 /* argbuf_index is an index for the next argument to be inserted, and
5529 so contains the count of the args already inserted. */
5531 funcval = (*sf->func) (argbuf_index, argbuf);
5533 /* Pop the spec processing context. */
5534 argbuf_index = save_argbuf_index;
5535 argbuf_length = save_argbuf_length;
5537 argbuf = save_argbuf;
5539 arg_going = save_arg_going;
5540 delete_this_arg = save_delete_this_arg;
5541 this_is_output_file = save_this_is_output_file;
5542 this_is_library_file = save_this_is_library_file;
5543 input_from_pipe = save_input_from_pipe;
5544 suffix_subst = save_suffix_subst;
5549 /* Handle a spec function call of the form:
5553 ARGS is processed as a spec in a separate context and split into an
5554 argument vector in the normal fashion. The function returns a string
5555 containing a spec which we then process in the caller's context, or
5556 NULL if no processing is required. */
5559 handle_spec_function (const char *p)
5562 const char *endp, *funcval;
5565 processing_spec_function++;
5567 /* Get the function name. */
5568 for (endp = p; *endp != '\0'; endp++)
5570 if (*endp == '(') /* ) */
5572 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5573 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5574 fatal ("malformed spec function name");
5576 if (*endp != '(') /* ) */
5577 fatal ("no arguments for spec function");
5578 func = save_string (p, endp - p);
5581 /* Get the arguments. */
5582 for (count = 0; *endp != '\0'; endp++)
5591 else if (*endp == '(') /* ) */
5596 fatal ("malformed spec function arguments");
5597 args = save_string (p, endp - p);
5600 /* p now points to just past the end of the spec function expression. */
5602 funcval = eval_spec_function (func, args);
5603 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5609 processing_spec_function--;
5614 /* Inline subroutine of handle_braces. Returns true if the current
5615 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5617 input_suffix_matches (const char *atom, const char *end_atom)
5619 /* We special case the semantics of {.s:...} and {.S:...} and their
5620 negative variants. Instead of testing the input filename suffix,
5621 we test whether the input source file is an assembler file or an
5622 assembler-with-cpp file respectively. This allows us to correctly
5623 handle the -x command line option. */
5625 if (atom + 1 == end_atom
5626 && input_file_compiler
5627 && input_file_compiler->suffix)
5630 return !strcmp (input_file_compiler->suffix, "@assembler");
5632 return !strcmp (input_file_compiler->suffix, "@assembler-with-cpp");
5635 return (input_suffix
5636 && !strncmp (input_suffix, atom, end_atom - atom)
5637 && input_suffix[end_atom - atom] == '\0');
5640 /* Subroutine of handle_braces. Returns true if a switch
5641 matching the atom bracketed by ATOM and END_ATOM appeared on the
5644 switch_matches (const char *atom, const char *end_atom, int starred)
5647 int len = end_atom - atom;
5648 int plen = starred ? len : -1;
5650 for (i = 0; i < n_switches; i++)
5651 if (!strncmp (switches[i].part1, atom, len)
5652 && (starred || switches[i].part1[len] == '\0')
5653 && check_live_switch (i, plen))
5659 /* Inline subroutine of handle_braces. Mark all of the switches which
5660 match ATOM (extends to END_ATOM; STARRED indicates whether there
5661 was a star after the atom) for later processing. */
5663 mark_matching_switches (const char *atom, const char *end_atom, int starred)
5666 int len = end_atom - atom;
5667 int plen = starred ? len : -1;
5669 for (i = 0; i < n_switches; i++)
5670 if (!strncmp (switches[i].part1, atom, len)
5671 && (starred || switches[i].part1[len] == '\0')
5672 && check_live_switch (i, plen))
5673 switches[i].ordering = 1;
5676 /* Inline subroutine of handle_braces. Process all the currently
5677 marked switches through give_switch, and clear the marks. */
5679 process_marked_switches (void)
5683 for (i = 0; i < n_switches; i++)
5684 if (switches[i].ordering == 1)
5686 switches[i].ordering = 0;
5691 /* Handle a %{ ... } construct. P points just inside the leading {.
5692 Returns a pointer one past the end of the brace block, or 0
5693 if we call do_spec_1 and that returns -1. */
5696 handle_braces (const char *p)
5698 const char *atom, *end_atom;
5699 const char *d_atom = NULL, *d_end_atom = NULL;
5700 const char *orig = p;
5707 bool a_must_be_last = false;
5708 bool ordered_set = false;
5709 bool disjunct_set = false;
5710 bool disj_matched = false;
5711 bool disj_starred = true;
5712 bool n_way_choice = false;
5713 bool n_way_matched = false;
5715 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5722 /* Scan one "atom" (S in the description above of %{}, possibly
5723 with !, ., or * modifiers). */
5724 a_matched = a_is_suffix = a_is_starred = a_is_negated = false;
5728 p++, a_is_negated = true;
5732 p++, a_is_suffix = true;
5735 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5736 || *p == ',' || *p == '.' || *p == '@')
5741 p++, a_is_starred = 1;
5747 /* Substitute the switch(es) indicated by the current atom. */
5749 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5750 || atom == end_atom)
5753 mark_matching_switches (atom, end_atom, a_is_starred);
5756 process_marked_switches ();
5760 /* Substitute some text if the current atom appears as a switch
5762 disjunct_set = true;
5766 if (atom == end_atom)
5768 if (!n_way_choice || disj_matched || *p == '|'
5769 || a_is_negated || a_is_suffix || a_is_starred)
5772 /* An empty term may appear as the last choice of an
5773 N-way choice set; it means "otherwise". */
5774 a_must_be_last = true;
5775 disj_matched = !n_way_matched;
5776 disj_starred = false;
5780 if (a_is_suffix && a_is_starred)
5784 disj_starred = false;
5786 /* Don't bother testing this atom if we already have a
5788 if (!disj_matched && !n_way_matched)
5791 a_matched = input_suffix_matches (atom, end_atom);
5793 a_matched = switch_matches (atom, end_atom, a_is_starred);
5795 if (a_matched != a_is_negated)
5797 disj_matched = true;
5799 d_end_atom = end_atom;
5806 /* Found the body, that is, the text to substitute if the
5807 current disjunction matches. */
5808 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5809 disj_matched && !n_way_matched);
5813 /* If we have an N-way choice, reset state for the next
5817 n_way_choice = true;
5818 n_way_matched |= disj_matched;
5819 disj_matched = false;
5820 disj_starred = true;
5821 d_atom = d_end_atom = NULL;
5830 while (*p++ != '}');
5835 fatal ("braced spec '%s' is invalid at '%c'", orig, *p);
5840 /* Subroutine of handle_braces. Scan and process a brace substitution body
5841 (X in the description of %{} syntax). P points one past the colon;
5842 ATOM and END_ATOM bracket the first atom which was found to be true
5843 (present) in the current disjunction; STARRED indicates whether all
5844 the atoms in the current disjunction were starred (for syntax validation);
5845 MATCHED indicates whether the disjunction matched or not, and therefore
5846 whether or not the body is to be processed through do_spec_1 or just
5847 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5851 process_brace_body (const char *p, const char *atom, const char *end_atom,
5852 int starred, int matched)
5854 const char *body, *end_body;
5855 unsigned int nesting_level;
5856 bool have_subst = false;
5858 /* Locate the closing } or ;, honoring nested braces.
5859 Trim trailing whitespace. */
5868 if (!--nesting_level)
5871 else if (*p == ';' && nesting_level == 1)
5873 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
5875 else if (*p == '\0')
5881 while (end_body[-1] == ' ' || end_body[-1] == '\t')
5884 if (have_subst && !starred)
5889 /* Copy the substitution body to permanent storage and execute it.
5890 If have_subst is false, this is a simple matter of running the
5891 body through do_spec_1... */
5892 char *string = save_string (body, end_body - body);
5895 if (do_spec_1 (string, 0, NULL) < 0)
5900 /* ... but if have_subst is true, we have to process the
5901 body once for each matching switch, with %* set to the
5902 variant part of the switch. */
5903 unsigned int hard_match_len = end_atom - atom;
5906 for (i = 0; i < n_switches; i++)
5907 if (!strncmp (switches[i].part1, atom, hard_match_len)
5908 && check_live_switch (i, hard_match_len))
5910 if (do_spec_1 (string, 0,
5911 &switches[i].part1[hard_match_len]) < 0)
5913 /* Pass any arguments this switch has. */
5915 suffix_subst = NULL;
5923 fatal ("braced spec body '%s' is invalid", body);
5926 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5927 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5928 spec, or -1 if either exact match or %* is used.
5930 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5931 whose value does not begin with "no-" is obsoleted by the same value
5932 with the "no-", similarly for a switch with the "no-" prefix. */
5935 check_live_switch (int switchnum, int prefix_length)
5937 const char *name = switches[switchnum].part1;
5940 /* In the common case of {<at-most-one-letter>*}, a negating
5941 switch would always match, so ignore that case. We will just
5942 send the conflicting switches to the compiler phase. */
5943 if (prefix_length >= 0 && prefix_length <= 1)
5946 /* If we already processed this switch and determined if it was
5947 live or not, return our past determination. */
5948 if (switches[switchnum].live_cond != 0)
5949 return switches[switchnum].live_cond > 0;
5951 /* Now search for duplicate in a manner that depends on the name. */
5955 for (i = switchnum + 1; i < n_switches; i++)
5956 if (switches[i].part1[0] == 'O')
5958 switches[switchnum].validated = 1;
5959 switches[switchnum].live_cond = SWITCH_FALSE;
5964 case 'W': case 'f': case 'm':
5965 if (! strncmp (name + 1, "no-", 3))
5967 /* We have Xno-YYY, search for XYYY. */
5968 for (i = switchnum + 1; i < n_switches; i++)
5969 if (switches[i].part1[0] == name[0]
5970 && ! strcmp (&switches[i].part1[1], &name[4]))
5972 switches[switchnum].validated = 1;
5973 switches[switchnum].live_cond = SWITCH_FALSE;
5979 /* We have XYYY, search for Xno-YYY. */
5980 for (i = switchnum + 1; i < n_switches; i++)
5981 if (switches[i].part1[0] == name[0]
5982 && switches[i].part1[1] == 'n'
5983 && switches[i].part1[2] == 'o'
5984 && switches[i].part1[3] == '-'
5985 && !strcmp (&switches[i].part1[4], &name[1]))
5987 switches[switchnum].validated = 1;
5988 switches[switchnum].live_cond = SWITCH_FALSE;
5995 /* Otherwise the switch is live. */
5996 switches[switchnum].live_cond = SWITCH_LIVE;
6000 /* Pass a switch to the current accumulating command
6001 in the same form that we received it.
6002 SWITCHNUM identifies the switch; it is an index into
6003 the vector of switches gcc received, which is `switches'.
6004 This cannot fail since it never finishes a command line.
6006 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
6009 give_switch (int switchnum, int omit_first_word)
6011 if (switches[switchnum].live_cond == SWITCH_IGNORE)
6014 if (!omit_first_word)
6016 do_spec_1 ("-", 0, NULL);
6017 do_spec_1 (switches[switchnum].part1, 1, NULL);
6020 if (switches[switchnum].args != 0)
6023 for (p = switches[switchnum].args; *p; p++)
6025 const char *arg = *p;
6027 do_spec_1 (" ", 0, NULL);
6030 unsigned length = strlen (arg);
6033 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
6034 if (arg[length] == '.')
6036 ((char *)arg)[length] = 0;
6040 do_spec_1 (arg, 1, NULL);
6042 ((char *)arg)[length] = '.';
6043 do_spec_1 (suffix_subst, 1, NULL);
6046 do_spec_1 (arg, 1, NULL);
6050 do_spec_1 (" ", 0, NULL);
6051 switches[switchnum].validated = 1;
6054 /* Search for a file named NAME trying various prefixes including the
6055 user's -B prefix and some standard ones.
6056 Return the absolute file name found. If nothing is found, return NAME. */
6059 find_file (const char *name)
6061 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true);
6062 return newname ? newname : name;
6065 /* Determine whether a directory exists. If LINKER, return 0 for
6066 certain fixed names not needed by the linker. */
6069 is_directory (const char *path1, bool linker)
6076 /* Ensure the string ends with "/.". The resulting path will be a
6077 directory even if the given path is a symbolic link. */
6078 len1 = strlen (path1);
6079 path = alloca (3 + len1);
6080 memcpy (path, path1, len1);
6082 if (!IS_DIR_SEPARATOR (cp[-1]))
6083 *cp++ = DIR_SEPARATOR;
6087 #ifndef FREEBSD_NATIVE
6088 /* Exclude directories that the linker is known to search. */
6090 && IS_DIR_SEPARATOR (path[0])
6092 && strncmp (path + 1, "lib", 3) == 0)
6094 && strncmp (path + 1, "usr", 3) == 0
6095 && IS_DIR_SEPARATOR (path[4])
6096 && strncmp (path + 5, "lib", 3) == 0)))
6098 #endif /* FREEBSD_NATIVE */
6100 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
6103 /* Set up the various global variables to indicate that we're processing
6104 the input file named FILENAME. */
6107 set_input (const char *filename)
6111 input_filename = filename;
6112 input_filename_length = strlen (input_filename);
6114 input_basename = input_filename;
6115 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
6116 /* Skip drive name so 'x:foo' is handled properly. */
6117 if (input_basename[1] == ':')
6118 input_basename += 2;
6120 for (p = input_basename; *p; p++)
6121 if (IS_DIR_SEPARATOR (*p))
6122 input_basename = p + 1;
6124 /* Find a suffix starting with the last period,
6125 and set basename_length to exclude that suffix. */
6126 basename_length = strlen (input_basename);
6127 suffixed_basename_length = basename_length;
6128 p = input_basename + basename_length;
6129 while (p != input_basename && *p != '.')
6131 if (*p == '.' && p != input_basename)
6133 basename_length = p - input_basename;
6134 input_suffix = p + 1;
6139 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
6140 we will need to do a stat on the input_filename. The
6141 INPUT_STAT_SET signals that the stat is needed. */
6145 /* On fatal signals, delete all the temporary files. */
6148 fatal_error (int signum)
6150 signal (signum, SIG_DFL);
6151 delete_failure_queue ();
6152 delete_temp_files ();
6153 /* Get the same signal again, this time not handled,
6154 so its normal effect occurs. */
6155 kill (getpid (), signum);
6158 extern int main (int, char **);
6161 main (int argc, char **argv)
6165 int linker_was_run = 0;
6166 int lang_n_infiles = 0;
6167 int num_linker_inputs = 0;
6168 char *explicit_link_files;
6171 struct user_specs *uptr;
6173 p = argv[0] + strlen (argv[0]);
6174 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
6178 xmalloc_set_program_name (programname);
6180 expandargv (&argc, &argv);
6182 prune_options (&argc, &argv);
6184 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6185 /* Perform host dependent initialization when needed. */
6186 GCC_DRIVER_HOST_INITIALIZATION;
6189 /* Unlock the stdio streams. */
6190 unlock_std_streams ();
6192 gcc_init_libintl ();
6194 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
6195 signal (SIGINT, fatal_error);
6197 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
6198 signal (SIGHUP, fatal_error);
6200 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
6201 signal (SIGTERM, fatal_error);
6203 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
6204 signal (SIGPIPE, fatal_error);
6207 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6208 receive the signal. A different setting is inheritable */
6209 signal (SIGCHLD, SIG_DFL);
6212 /* Allocate the argument vector. */
6215 obstack_init (&obstack);
6217 /* Build multilib_select, et. al from the separate lines that make up each
6218 multilib selection. */
6220 const char *const *q = multilib_raw;
6223 obstack_init (&multilib_obstack);
6224 while ((p = *q++) != (char *) 0)
6225 obstack_grow (&multilib_obstack, p, strlen (p));
6227 obstack_1grow (&multilib_obstack, 0);
6228 multilib_select = XOBFINISH (&multilib_obstack, const char *);
6230 q = multilib_matches_raw;
6231 while ((p = *q++) != (char *) 0)
6232 obstack_grow (&multilib_obstack, p, strlen (p));
6234 obstack_1grow (&multilib_obstack, 0);
6235 multilib_matches = XOBFINISH (&multilib_obstack, const char *);
6237 q = multilib_exclusions_raw;
6238 while ((p = *q++) != (char *) 0)
6239 obstack_grow (&multilib_obstack, p, strlen (p));
6241 obstack_1grow (&multilib_obstack, 0);
6242 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *);
6245 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
6248 obstack_1grow (&multilib_obstack, ' ');
6249 obstack_grow (&multilib_obstack,
6250 multilib_defaults_raw[i],
6251 strlen (multilib_defaults_raw[i]));
6255 obstack_1grow (&multilib_obstack, 0);
6256 multilib_defaults = XOBFINISH (&multilib_obstack, const char *);
6259 /* Set up to remember the pathname of gcc and any options
6260 needed for collect. We use argv[0] instead of programname because
6261 we need the complete pathname. */
6262 obstack_init (&collect_obstack);
6263 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6264 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6265 putenv (XOBFINISH (&collect_obstack, char *));
6267 #ifdef INIT_ENVIRONMENT
6268 /* Set up any other necessary machine specific environment variables. */
6269 putenv (INIT_ENVIRONMENT);
6272 /* Make a table of what switches there are (switches, n_switches).
6273 Make a table of specified input files (infiles, n_infiles).
6274 Decode switches that are handled locally. */
6276 process_command (argc, (const char **) argv);
6278 /* Initialize the vector of specs to just the default.
6279 This means one element containing 0s, as a terminator. */
6281 compilers = xmalloc (sizeof default_compilers);
6282 memcpy (compilers, default_compilers, sizeof default_compilers);
6283 n_compilers = n_default_compilers;
6285 /* Read specs from a file if there is one. */
6287 #ifdef FREEBSD_NATIVE
6288 machine_suffix = "";
6289 just_machine_suffix = "";
6290 #else /* FREEBSD_NATIVE */
6291 machine_suffix = concat (spec_machine, dir_separator_str,
6292 spec_version, dir_separator_str, NULL);
6293 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6294 #endif /* FREEBSD_NATIVE */
6296 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true);
6297 /* Read the specs file unless it is a default one. */
6298 if (specs_file != 0 && strcmp (specs_file, "specs"))
6299 read_specs (specs_file, TRUE);
6303 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6304 for any override of as, ld and libraries. */
6305 specs_file = (char *) alloca (strlen (FBSD_DATA_PREFIX)
6306 + strlen (just_machine_suffix)
6307 + sizeof ("specs"));
6309 strcpy (specs_file, FBSD_DATA_PREFIX);
6310 strcat (specs_file, just_machine_suffix);
6311 strcat (specs_file, "specs");
6312 if (access (specs_file, R_OK) == 0)
6313 read_specs (specs_file, TRUE);
6315 /* Process any configure-time defaults specified for the command line
6316 options, via OPTION_DEFAULT_SPECS. */
6317 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6318 do_option_spec (option_default_specs[i].name,
6319 option_default_specs[i].spec);
6321 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6322 of the command line. */
6324 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6325 do_self_spec (driver_self_specs[i]);
6327 /* If not cross-compiling, look for executables in the standard
6329 if (*cross_compile == '0')
6331 if (*md_exec_prefix)
6333 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6334 PREFIX_PRIORITY_LAST, 0, 0);
6338 /* Process sysroot_suffix_spec. */
6339 if (*sysroot_suffix_spec != 0
6340 && do_spec_2 (sysroot_suffix_spec) == 0)
6342 if (argbuf_index > 1)
6343 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6344 else if (argbuf_index == 1)
6345 target_sysroot_suffix = xstrdup (argbuf[argbuf_index -1]);
6348 #ifdef HAVE_LD_SYSROOT
6349 /* Pass the --sysroot option to the linker, if it supports that. If
6350 there is a sysroot_suffix_spec, it has already been processed by
6351 this point, so target_system_root really is the system root we
6353 if (target_system_root)
6355 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6356 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
6357 set_spec ("link", XOBFINISH (&obstack, const char *));
6361 /* Process sysroot_hdrs_suffix_spec. */
6362 if (*sysroot_hdrs_suffix_spec != 0
6363 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6365 if (argbuf_index > 1)
6366 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6367 else if (argbuf_index == 1)
6368 target_sysroot_hdrs_suffix = xstrdup (argbuf[argbuf_index -1]);
6371 /* Look for startfiles in the standard places. */
6372 if (*startfile_prefix_spec != 0
6373 && do_spec_2 (startfile_prefix_spec) == 0
6374 && do_spec_1 (" ", 0, NULL) == 0)
6377 for (ndx = 0; ndx < argbuf_index; ndx++)
6378 add_sysrooted_prefix (&startfile_prefixes, argbuf[ndx], "BINUTILS",
6379 PREFIX_PRIORITY_LAST, 0, 1);
6381 /* We should eventually get rid of all these and stick to
6382 startfile_prefix_spec exclusively. */
6383 else if (*cross_compile == '0' || target_system_root)
6385 if (*md_startfile_prefix)
6386 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6387 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6389 if (*md_startfile_prefix_1)
6390 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6391 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6393 /* If standard_startfile_prefix is relative, base it on
6394 standard_exec_prefix. This lets us move the installed tree
6395 as a unit. If GCC_EXEC_PREFIX is defined, base
6396 standard_startfile_prefix on that as well.
6398 If the prefix is relative, only search it for native compilers;
6399 otherwise we will search a directory containing host libraries. */
6400 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
6401 add_sysrooted_prefix (&startfile_prefixes,
6402 standard_startfile_prefix, "BINUTILS",
6403 PREFIX_PRIORITY_LAST, 0, 1);
6404 else if (*cross_compile == '0')
6406 if (gcc_exec_prefix)
6407 add_prefix (&startfile_prefixes,
6408 concat (gcc_exec_prefix, machine_suffix,
6409 standard_startfile_prefix, NULL),
6410 NULL, PREFIX_PRIORITY_LAST, 0, 1);
6411 add_prefix (&startfile_prefixes,
6412 concat (standard_exec_prefix,
6414 standard_startfile_prefix, NULL),
6415 NULL, PREFIX_PRIORITY_LAST, 0, 1);
6418 #ifndef FREEBSD_NATIVE
6419 if (*standard_startfile_prefix_1)
6420 add_sysrooted_prefix (&startfile_prefixes,
6421 standard_startfile_prefix_1, "BINUTILS",
6422 PREFIX_PRIORITY_LAST, 0, 1);
6423 if (*standard_startfile_prefix_2)
6424 add_sysrooted_prefix (&startfile_prefixes,
6425 standard_startfile_prefix_2, "BINUTILS",
6426 PREFIX_PRIORITY_LAST, 0, 1);
6430 /* Process any user specified specs in the order given on the command
6432 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6434 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6436 read_specs (filename ? filename : uptr->filename, FALSE);
6439 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6440 if (gcc_exec_prefix)
6441 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6442 spec_version, dir_separator_str, NULL);
6444 /* Now we have the specs.
6445 Set the `valid' bits for switches that match anything in any spec. */
6447 validate_all_switches ();
6449 /* Now that we have the switches and the specs, set
6450 the subdirectory based on the options. */
6451 set_multilib_dir ();
6453 /* Warn about any switches that no pass was interested in. */
6455 for (i = 0; (int) i < n_switches; i++)
6456 if (! switches[i].validated)
6457 error ("unrecognized option '-%s'", switches[i].part1);
6459 /* Obey some of the options. */
6461 if (print_search_dirs)
6463 #ifndef FREEBSD_NATIVE
6464 printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix);
6466 printf (_("install: %s\n"), standard_exec_prefix);
6468 printf (_("programs: %s\n"),
6469 build_search_list (&exec_prefixes, "", false, false));
6470 printf (_("libraries: %s\n"),
6471 build_search_list (&startfile_prefixes, "", false, true));
6475 if (print_file_name)
6477 printf ("%s\n", find_file (print_file_name));
6481 if (print_prog_name)
6483 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6484 printf ("%s\n", (newname ? newname : print_prog_name));
6488 if (print_multi_lib)
6490 print_multilib_info ();
6494 if (print_multi_directory)
6496 if (multilib_dir == NULL)
6499 printf ("%s\n", multilib_dir);
6503 if (print_multi_os_directory)
6505 if (multilib_os_dir == NULL)
6508 printf ("%s\n", multilib_os_dir);
6512 if (target_help_flag)
6514 /* Print if any target specific options. */
6516 /* We do not exit here. Instead we have created a fake input file
6517 called 'target-dummy' which needs to be compiled, and we pass this
6518 on to the various sub-processes, along with the --target-help
6522 if (print_help_list)
6528 printf ("%s", _("\nFor bug reporting instructions, please see:\n"));
6529 printf ("%s.\n", bug_report_url);
6534 /* We do not exit here. Instead we have created a fake input file
6535 called 'help-dummy' which needs to be compiled, and we pass this
6536 on the various sub-processes, along with the --help switch. */
6544 notice ("Target: %s\n", spec_machine);
6545 notice ("Configured with: %s\n", configuration_arguments);
6547 #ifdef THREAD_MODEL_SPEC
6548 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6549 but there's no point in doing all this processing just to get
6550 thread_model back. */
6551 obstack_init (&obstack);
6552 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6553 obstack_1grow (&obstack, '\0');
6554 thrmod = XOBFINISH (&obstack, const char *);
6556 thrmod = thread_model;
6559 notice ("Thread model: %s\n", thrmod);
6561 /* compiler_version is truncated at the first space when initialized
6562 from version string, so truncate version_string at the first space
6563 before comparing. */
6564 for (n = 0; version_string[n]; n++)
6565 if (version_string[n] == ' ')
6568 if (! strncmp (version_string, compiler_version, n)
6569 && compiler_version[n] == 0)
6570 notice ("gcc version %s\n", version_string);
6572 notice ("gcc driver version %s executing gcc version %s\n",
6573 version_string, compiler_version);
6579 if (n_infiles == added_libraries)
6580 fatal ("No input files specified");
6582 /* Make a place to record the compiler output file names
6583 that correspond to the input files. */
6586 i += lang_specific_extra_outfiles;
6587 outfiles = XCNEWVEC (const char *, i);
6589 /* Record which files were specified explicitly as link input. */
6591 explicit_link_files = XCNEWVEC (char, n_infiles);
6594 combine_inputs = true;
6596 combine_inputs = false;
6598 for (i = 0; (int) i < n_infiles; i++)
6600 const char *name = infiles[i].name;
6601 struct compiler *compiler = lookup_compiler (name,
6603 infiles[i].language);
6605 if (compiler && !(compiler->combinable))
6606 combine_inputs = false;
6608 if (lang_n_infiles > 0 && compiler != input_file_compiler
6609 && infiles[i].language && infiles[i].language[0] != '*')
6610 infiles[i].incompiler = compiler;
6614 input_file_compiler = compiler;
6615 infiles[i].incompiler = compiler;
6619 /* Since there is no compiler for this input file, assume it is a
6621 explicit_link_files[i] = 1;
6622 infiles[i].incompiler = NULL;
6624 infiles[i].compiled = false;
6625 infiles[i].preprocessed = false;
6628 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1)
6629 fatal ("cannot specify -o with -c or -S with multiple files");
6631 if (combine_flag && save_temps_flag)
6633 bool save_combine_inputs = combine_inputs;
6634 /* Must do a separate pre-processing pass for C & Objective-C files, to
6635 obtain individual .i files. */
6637 combine_inputs = false;
6638 for (i = 0; (int) i < n_infiles; i++)
6640 int this_file_error = 0;
6642 input_file_number = i;
6643 set_input (infiles[i].name);
6644 if (infiles[i].incompiler
6645 && (infiles[i].incompiler)->needs_preprocessing)
6646 input_file_compiler = infiles[i].incompiler;
6650 if (input_file_compiler)
6652 if (input_file_compiler->spec[0] == '#')
6654 error ("%s: %s compiler not installed on this system",
6655 input_filename, &input_file_compiler->spec[1]);
6656 this_file_error = 1;
6660 value = do_spec (input_file_compiler->spec);
6661 infiles[i].preprocessed = true;
6662 if (!have_o_argbuf_index)
6663 fatal ("spec '%s' is invalid", input_file_compiler->spec);
6664 infiles[i].name = argbuf[have_o_argbuf_index];
6665 infiles[i].incompiler
6666 = lookup_compiler (infiles[i].name,
6667 strlen (infiles[i].name),
6668 infiles[i].language);
6671 this_file_error = 1;
6675 if (this_file_error)
6677 delete_failure_queue ();
6681 clear_failure_queue ();
6683 combine_inputs = save_combine_inputs;
6686 for (i = 0; (int) i < n_infiles; i++)
6688 int this_file_error = 0;
6690 /* Tell do_spec what to substitute for %i. */
6692 input_file_number = i;
6693 set_input (infiles[i].name);
6695 if (infiles[i].compiled)
6698 /* Use the same thing in %o, unless cp->spec says otherwise. */
6700 outfiles[i] = input_filename;
6702 /* Figure out which compiler from the file's suffix. */
6704 if (! combine_inputs)
6706 = lookup_compiler (infiles[i].name, input_filename_length,
6707 infiles[i].language);
6709 input_file_compiler = infiles[i].incompiler;
6711 if (input_file_compiler)
6713 /* Ok, we found an applicable compiler. Run its spec. */
6715 if (input_file_compiler->spec[0] == '#')
6717 error ("%s: %s compiler not installed on this system",
6718 input_filename, &input_file_compiler->spec[1]);
6719 this_file_error = 1;
6723 value = do_spec (input_file_compiler->spec);
6724 infiles[i].compiled = true;
6726 this_file_error = 1;
6730 /* If this file's name does not contain a recognized suffix,
6731 record it as explicit linker input. */
6734 explicit_link_files[i] = 1;
6736 /* Clear the delete-on-failure queue, deleting the files in it
6737 if this compilation failed. */
6739 if (this_file_error)
6741 delete_failure_queue ();
6744 /* If this compilation succeeded, don't delete those files later. */
6745 clear_failure_queue ();
6748 /* Reset the input file name to the first compile/object file name, for use
6749 with %b in LINK_SPEC. We use the first input file that we can find
6750 a compiler to compile it instead of using infiles.language since for
6751 languages other than C we use aliases that we then lookup later. */
6756 for (i = 0; i < n_infiles ; i++)
6757 if (infiles[i].language && infiles[i].language[0] != '*')
6759 set_input (infiles[i].name);
6764 if (error_count == 0)
6766 /* Make sure INPUT_FILE_NUMBER points to first available open
6768 input_file_number = n_infiles;
6769 if (lang_specific_pre_link ())
6773 /* Determine if there are any linker input files. */
6774 num_linker_inputs = 0;
6775 for (i = 0; (int) i < n_infiles; i++)
6776 if (explicit_link_files[i] || outfiles[i] != NULL)
6777 num_linker_inputs++;
6779 /* Run ld to link all the compiler output files. */
6781 if (num_linker_inputs > 0 && error_count == 0)
6783 int tmp = execution_count;
6785 /* We'll use ld if we can't find collect2. */
6786 if (! strcmp (linker_name_spec, "collect2"))
6788 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false);
6790 linker_name_spec = "ld";
6792 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6794 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false);
6795 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true);
6797 value = do_spec (link_command_spec);
6800 linker_was_run = (tmp != execution_count);
6803 /* If options said don't run linker,
6804 complain about input files to be given to the linker. */
6806 if (! linker_was_run && error_count == 0)
6807 for (i = 0; (int) i < n_infiles; i++)
6808 if (explicit_link_files[i])
6809 error ("%s: linker input file unused because linking not done",
6812 /* Delete some or all of the temporary files we made. */
6815 delete_failure_queue ();
6816 delete_temp_files ();
6818 if (print_help_list)
6820 printf (("\nFor bug reporting instructions, please see:\n"));
6821 printf ("%s\n", bug_report_url);
6824 return (signal_count != 0 ? 2
6825 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
6829 /* Find the proper compilation spec for the file name NAME,
6830 whose length is LENGTH. LANGUAGE is the specified language,
6831 or 0 if this file is to be passed to the linker. */
6833 static struct compiler *
6834 lookup_compiler (const char *name, size_t length, const char *language)
6836 struct compiler *cp;
6838 /* If this was specified by the user to be a linker input, indicate that. */
6839 if (language != 0 && language[0] == '*')
6842 /* Otherwise, look for the language, if one is spec'd. */
6845 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6846 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6849 error ("language %s not recognized", language);
6853 /* Look for a suffix. */
6854 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6856 if (/* The suffix `-' matches only the file name `-'. */
6857 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6858 || (strlen (cp->suffix) < length
6859 /* See if the suffix matches the end of NAME. */
6860 && !strcmp (cp->suffix,
6861 name + length - strlen (cp->suffix))
6866 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6867 /* Look again, but case-insensitively this time. */
6869 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6871 if (/* The suffix `-' matches only the file name `-'. */
6872 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6873 || (strlen (cp->suffix) < length
6874 /* See if the suffix matches the end of NAME. */
6875 && ((!strcmp (cp->suffix,
6876 name + length - strlen (cp->suffix))
6877 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6878 && !strcasecmp (cp->suffix,
6879 name + length - strlen (cp->suffix)))
6885 if (cp >= compilers)
6887 if (cp->spec[0] != '@')
6888 /* A non-alias entry: return it. */
6891 /* An alias entry maps a suffix to a language.
6892 Search for the language; pass 0 for NAME and LENGTH
6893 to avoid infinite recursion if language not found. */
6894 return lookup_compiler (NULL, 0, cp->spec + 1);
6900 save_string (const char *s, int len)
6902 char *result = XNEWVEC (char, len + 1);
6904 memcpy (result, s, len);
6910 pfatal_with_name (const char *name)
6912 perror_with_name (name);
6913 delete_temp_files ();
6918 perror_with_name (const char *name)
6920 error ("%s: %s", name, xstrerror (errno));
6923 /* Output an error message and exit. */
6926 fancy_abort (const char *file, int line, const char *func)
6928 fatal_ice ("internal gcc abort in %s, at %s:%d", func, file, line);
6931 /* Output an error message and exit. */
6934 fatal_ice (const char *cmsgid, ...)
6938 va_start (ap, cmsgid);
6940 fprintf (stderr, "%s: ", programname);
6941 vfprintf (stderr, _(cmsgid), ap);
6943 fprintf (stderr, "\n");
6944 delete_temp_files ();
6945 exit (pass_exit_codes ? ICE_EXIT_CODE : 1);
6949 fatal (const char *cmsgid, ...)
6953 va_start (ap, cmsgid);
6955 fprintf (stderr, "%s: ", programname);
6956 vfprintf (stderr, _(cmsgid), ap);
6958 fprintf (stderr, "\n");
6959 delete_temp_files ();
6963 /* The argument is actually c-format, not gcc-internal-format,
6964 but because functions with identical names are used through
6965 the rest of the compiler with gcc-internal-format, we just
6966 need to hope all users of these functions use the common
6967 subset between c-format and gcc-internal-format. */
6970 error (const char *gmsgid, ...)
6974 va_start (ap, gmsgid);
6975 fprintf (stderr, "%s: ", programname);
6976 vfprintf (stderr, _(gmsgid), ap);
6979 fprintf (stderr, "\n");
6983 notice (const char *cmsgid, ...)
6987 va_start (ap, cmsgid);
6988 vfprintf (stderr, _(cmsgid), ap);
6993 validate_switches_from_spec (const char *spec)
6995 const char *p = spec;
6998 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
6999 /* We have a switch spec. */
7000 p = validate_switches (p + 1);
7004 validate_all_switches (void)
7006 struct compiler *comp;
7007 struct spec_list *spec;
7009 for (comp = compilers; comp->spec; comp++)
7010 validate_switches_from_spec (comp->spec);
7012 /* Look through the linked list of specs read from the specs file. */
7013 for (spec = specs; spec; spec = spec->next)
7014 validate_switches_from_spec (*spec->ptr_spec);
7016 validate_switches_from_spec (link_command_spec);
7019 /* Look at the switch-name that comes after START
7020 and mark as valid all supplied switches that match it. */
7023 validate_switches (const char *start)
7025 const char *p = start;
7029 bool suffix = false;
7030 bool starred = false;
7032 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7045 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
7046 || *p == ',' || *p == '.' || *p == '@')
7051 starred = true, p++;
7057 /* Mark all matching switches as valid. */
7058 for (i = 0; i < n_switches; i++)
7059 if (!strncmp (switches[i].part1, atom, len)
7060 && (starred || switches[i].part1[len] == 0))
7061 switches[i].validated = 1;
7065 if (*p && (p[-1] == '|' || p[-1] == '&'))
7068 if (*p && p[-1] == ':')
7070 while (*p && *p != ';' && *p != '}')
7075 if (*p == '{' || *p == '<')
7076 p = validate_switches (p+1);
7077 else if (p[0] == 'W' && p[1] == '{')
7078 p = validate_switches (p+2);
7085 if (*p && p[-1] == ';')
7099 static struct mdswitchstr *mdswitches;
7100 static int n_mdswitches;
7102 /* Check whether a particular argument was used. The first time we
7103 canonicalize the switches to keep only the ones we care about. */
7106 used_arg (const char *p, int len)
7111 const char *replace;
7116 static struct mswitchstr *mswitches;
7117 static int n_mswitches;
7122 struct mswitchstr *matches;
7126 /* Break multilib_matches into the component strings of string
7127 and replacement string. */
7128 for (q = multilib_matches; *q != '\0'; q++)
7132 matches = alloca ((sizeof (struct mswitchstr)) * cnt);
7134 q = multilib_matches;
7143 fatal ("multilib spec '%s' is invalid", multilib_matches);
7147 matches[i].len = q - matches[i].str;
7149 matches[i].replace = ++q;
7150 while (*q != ';' && *q != '\0')
7153 goto invalid_matches;
7156 matches[i].rep_len = q - matches[i].replace;
7162 /* Now build a list of the replacement string for switches that we care
7163 about. Make sure we allocate at least one entry. This prevents
7164 xmalloc from calling fatal, and prevents us from re-executing this
7167 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1));
7168 for (i = 0; i < n_switches; i++)
7169 if (switches[i].live_cond != SWITCH_IGNORE)
7171 int xlen = strlen (switches[i].part1);
7172 for (j = 0; j < cnt; j++)
7173 if (xlen == matches[j].len
7174 && ! strncmp (switches[i].part1, matches[j].str, xlen))
7176 mswitches[n_mswitches].str = matches[j].replace;
7177 mswitches[n_mswitches].len = matches[j].rep_len;
7178 mswitches[n_mswitches].replace = (char *) 0;
7179 mswitches[n_mswitches].rep_len = 0;
7185 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7186 on the command line nor any options mutually incompatible with
7188 for (i = 0; i < n_mdswitches; i++)
7192 for (q = multilib_options; *q != '\0'; q++)
7198 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
7199 || strchr (" /", q[mdswitches[i].len]) == NULL)
7201 while (*q != ' ' && *q != '/' && *q != '\0')
7208 if (*q != ' ' && *q != '\0')
7210 while (*r != ' ' && *r != '\0')
7213 while (*q != ' ' && *q != '/' && *q != '\0')
7216 if (used_arg (r, q - r))
7221 mswitches[n_mswitches].str = mdswitches[i].str;
7222 mswitches[n_mswitches].len = mdswitches[i].len;
7223 mswitches[n_mswitches].replace = (char *) 0;
7224 mswitches[n_mswitches].rep_len = 0;
7237 for (i = 0; i < n_mswitches; i++)
7238 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
7245 default_arg (const char *p, int len)
7249 for (i = 0; i < n_mdswitches; i++)
7250 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
7256 /* Work out the subdirectory to use based on the options. The format of
7257 multilib_select is a list of elements. Each element is a subdirectory
7258 name followed by a list of options followed by a semicolon. The format
7259 of multilib_exclusions is the same, but without the preceding
7260 directory. First gcc will check the exclusions, if none of the options
7261 beginning with an exclamation point are present, and all of the other
7262 options are present, then we will ignore this completely. Passing
7263 that, gcc will consider each multilib_select in turn using the same
7264 rules for matching the options. If a match is found, that subdirectory
7268 set_multilib_dir (void)
7271 unsigned int this_path_len;
7272 const char *this_path, *this_arg;
7273 const char *start, *end;
7275 int ok, ndfltok, first;
7278 start = multilib_defaults;
7279 while (*start == ' ' || *start == '\t')
7281 while (*start != '\0')
7284 while (*start != ' ' && *start != '\t' && *start != '\0')
7286 while (*start == ' ' || *start == '\t')
7294 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches);
7295 for (start = multilib_defaults; *start != '\0'; start = end + 1)
7297 while (*start == ' ' || *start == '\t')
7303 for (end = start + 1;
7304 *end != ' ' && *end != '\t' && *end != '\0'; end++)
7307 obstack_grow (&multilib_obstack, start, end - start);
7308 obstack_1grow (&multilib_obstack, 0);
7309 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *);
7310 mdswitches[i++].len = end - start;
7317 p = multilib_exclusions;
7320 /* Ignore newlines. */
7327 /* Check the arguments. */
7334 fatal ("multilib exclusions '%s' is invalid",
7335 multilib_exclusions);
7345 while (*p != ' ' && *p != ';')
7348 goto invalid_exclusions;
7352 if (*this_arg != '!')
7360 ok = used_arg (this_arg, p - this_arg);
7375 p = multilib_select;
7378 /* Ignore newlines. */
7385 /* Get the initial path. */
7392 fatal ("multilib select '%s' is invalid",
7397 this_path_len = p - this_path;
7399 /* Check the arguments. */
7406 goto invalid_select;
7415 while (*p != ' ' && *p != ';')
7418 goto invalid_select;
7422 if (*this_arg != '!')
7430 /* If this is a default argument, we can just ignore it.
7431 This is true even if this_arg begins with '!'. Beginning
7432 with '!' does not mean that this argument is necessarily
7433 inappropriate for this library: it merely means that
7434 there is a more specific library which uses this
7435 argument. If this argument is a default, we need not
7436 consider that more specific library. */
7437 ok = used_arg (this_arg, p - this_arg);
7444 if (default_arg (this_arg, p - this_arg))
7453 if (this_path_len != 1
7454 || this_path[0] != '.')
7456 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1);
7459 strncpy (new_multilib_dir, this_path, this_path_len);
7460 new_multilib_dir[this_path_len] = '\0';
7461 q = strchr (new_multilib_dir, ':');
7464 multilib_dir = new_multilib_dir;
7471 const char *q = this_path, *end = this_path + this_path_len;
7473 while (q < end && *q != ':')
7477 char *new_multilib_os_dir = XNEWVEC (char, end - q);
7478 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
7479 new_multilib_os_dir[end - q - 1] = '\0';
7480 multilib_os_dir = new_multilib_os_dir;
7488 if (multilib_dir == NULL && multilib_os_dir != NULL
7489 && strcmp (multilib_os_dir, ".") == 0)
7491 free ((char *) multilib_os_dir);
7492 multilib_os_dir = NULL;
7494 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7495 multilib_os_dir = multilib_dir;
7498 /* Print out the multiple library subdirectory selection
7499 information. This prints out a series of lines. Each line looks
7500 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7501 required. Only the desired options are printed out, the negative
7502 matches. The options are print without a leading dash. There are
7503 no spaces to make it easy to use the information in the shell.
7504 Each subdirectory is printed only once. This assumes the ordering
7505 generated by the genmultilib script. Also, we leave out ones that match
7509 print_multilib_info (void)
7511 const char *p = multilib_select;
7512 const char *last_path = 0, *this_path;
7514 unsigned int last_path_len = 0;
7519 /* Ignore newlines. */
7526 /* Get the initial path. */
7533 fatal ("multilib select '%s' is invalid", multilib_select);
7539 /* When --disable-multilib was used but target defines
7540 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7541 to find multilib_os_dir, so skip them from output. */
7542 if (this_path[0] == '.' && this_path[1] == ':')
7545 /* Check for matches with the multilib_exclusions. We don't bother
7546 with the '!' in either list. If any of the exclusion rules match
7547 all of its options with the select rule, we skip it. */
7549 const char *e = multilib_exclusions;
7550 const char *this_arg;
7555 /* Ignore newlines. */
7562 /* Check the arguments. */
7571 fatal ("multilib exclusion '%s' is invalid",
7572 multilib_exclusions);
7583 while (*e != ' ' && *e != ';')
7586 goto invalid_exclusion;
7594 int len = e - this_arg;
7597 goto invalid_select;
7601 while (*q != ' ' && *q != ';')
7604 goto invalid_select;
7608 if (! strncmp (arg, this_arg,
7609 (len < q - arg) ? q - arg : len)
7610 || default_arg (this_arg, e - this_arg))
7640 /* If this is a duplicate, skip it. */
7641 skip = (last_path != 0
7642 && (unsigned int) (p - this_path) == last_path_len
7643 && ! strncmp (last_path, this_path, last_path_len));
7645 last_path = this_path;
7646 last_path_len = p - this_path;
7649 /* If this directory requires any default arguments, we can skip
7650 it. We will already have printed a directory identical to
7651 this one which does not require that default argument. */
7662 goto invalid_select;
7669 while (*q != ' ' && *q != ';')
7672 goto invalid_select;
7677 && default_arg (arg, q - arg))
7692 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7703 goto invalid_select;
7711 use_arg = *p != '!';
7716 while (*p != ' ' && *p != ';')
7719 goto invalid_select;
7731 /* If there are extra options, print them now. */
7732 if (multilib_extra && *multilib_extra)
7734 int print_at = TRUE;
7737 for (q = multilib_extra; *q != '\0'; q++)
7758 /* if-exists built-in spec function.
7760 Checks to see if the file specified by the absolute pathname in
7761 ARGS exists. Returns that pathname if found.
7763 The usual use for this function is to check for a library file
7764 (whose name has been expanded with %s). */
7767 if_exists_spec_function (int argc, const char **argv)
7769 /* Must have only one argument. */
7770 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7776 /* if-exists-else built-in spec function.
7778 This is like if-exists, but takes an additional argument which
7779 is returned if the first argument does not exist. */
7782 if_exists_else_spec_function (int argc, const char **argv)
7784 /* Must have exactly two arguments. */
7788 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7794 /* replace-outfile built-in spec function.
7796 This looks for the first argument in the outfiles array's name and
7797 replaces it with the second argument. */
7800 replace_outfile_spec_function (int argc, const char **argv)
7803 /* Must have exactly two arguments. */
7807 for (i = 0; i < n_infiles; i++)
7809 if (outfiles[i] && !strcmp (outfiles[i], argv[0]))
7810 outfiles[i] = xstrdup (argv[1]);
7815 /* Given two version numbers, compares the two numbers.
7816 A version number must match the regular expression
7817 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
7820 compare_version_strings (const char *v1, const char *v2)
7825 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
7826 REG_EXTENDED | REG_NOSUB) != 0)
7828 rresult = regexec (&r, v1, 0, NULL, 0);
7829 if (rresult == REG_NOMATCH)
7830 fatal ("invalid version number `%s'", v1);
7831 else if (rresult != 0)
7833 rresult = regexec (&r, v2, 0, NULL, 0);
7834 if (rresult == REG_NOMATCH)
7835 fatal ("invalid version number `%s'", v2);
7836 else if (rresult != 0)
7839 return strverscmp (v1, v2);
7843 /* version_compare built-in spec function.
7845 This takes an argument of the following form:
7847 <comparison-op> <arg1> [<arg2>] <switch> <result>
7849 and produces "result" if the comparison evaluates to true,
7850 and nothing if it doesn't.
7852 The supported <comparison-op> values are:
7854 >= true if switch is a later (or same) version than arg1
7856 < true if switch is an earlier version than arg1
7858 >< true if switch is arg1 or later, and earlier than arg2
7859 <> true if switch is earlier than arg1 or is arg2 or later
7861 If the switch is not present, the condition is false unless
7862 the first character of the <comparison-op> is '!'.
7865 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
7866 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
7869 version_compare_spec_function (int argc, const char **argv)
7873 const char *switch_value = NULL;
7878 fatal ("too few arguments to %%:version-compare");
7879 if (argv[0][0] == '\0')
7881 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!')
7883 if (argc != nargs + 3)
7884 fatal ("too many arguments to %%:version-compare");
7886 switch_len = strlen (argv[nargs + 1]);
7887 for (i = 0; i < n_switches; i++)
7888 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len)
7889 && check_live_switch (i, switch_len))
7890 switch_value = switches[i].part1 + switch_len;
7892 if (switch_value == NULL)
7896 comp1 = compare_version_strings (switch_value, argv[1]);
7898 comp2 = compare_version_strings (switch_value, argv[2]);
7900 comp2 = -1; /* This value unused. */
7903 switch (argv[0][0] << 8 | argv[0][1])
7905 case '>' << 8 | '=':
7906 result = comp1 >= 0;
7908 case '!' << 8 | '<':
7909 result = comp1 >= 0 || switch_value == NULL;
7914 case '!' << 8 | '>':
7915 result = comp1 < 0 || switch_value == NULL;
7917 case '>' << 8 | '<':
7918 result = comp1 >= 0 && comp2 < 0;
7920 case '<' << 8 | '>':
7921 result = comp1 < 0 || comp2 >= 0;
7925 fatal ("unknown operator '%s' in %%:version-compare", argv[0]);
7930 return argv[nargs + 2];
7933 /* %:include builtin spec function. This differs from %include in that it
7934 can be nested inside a spec, and thus be conditionalized. It takes
7935 one argument, the filename, and looks for it in the startfile path.
7936 The result is always NULL, i.e. an empty expansion. */
7939 include_spec_function (int argc, const char **argv)
7946 file = find_a_file (&startfile_prefixes, argv[0], R_OK, 0);
7947 read_specs (file ? file : argv[0], FALSE);