* parse.y (maybe_yank_clinit): Don't crash if bbody is NULL.
[official-gcc.git] / gcc / gcc.c
blob342ffa69d359ec2c16320f359eac8e2d7951476b
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 Free Software Foundation,
4 Inc.
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
11 version.
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
16 for more details.
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, 59 Temple Place - Suite 330, Boston, MA
21 02111-1307, USA.
23 This paragraph is here to try to keep Sun CC from dying.
24 The number of chars here seems crucial!!!! */
26 /* This program is the user interface to the C compiler and possibly to
27 other compilers. It is used because compilation is a complicated procedure
28 which involves running several programs and passing temporary files between
29 them, forwarding the users switches to those programs selectively,
30 and deleting the temporary files at the end.
32 CC recognizes how to compile each input file by suffixes in the file names.
33 Once it knows which kind of compilation to perform, the procedure for
34 compilation is specified by a string called a "spec". */
36 /* A Short Introduction to Adding a Command-Line Option.
38 Before adding a command-line option, consider if it is really
39 necessary. Each additional command-line option adds complexity and
40 is difficult to remove in subsequent versions.
42 In the following, consider adding the command-line argument
43 `--bar'.
45 1. Each command-line option is specified in the specs file. The
46 notation is described below in the comment entitled "The Specs
47 Language". Read it.
49 2. In this file, add an entry to "option_map" equating the long
50 `--' argument version and any shorter, single letter version. Read
51 the comments in the declaration of "struct option_map" for an
52 explanation. Do not omit the first `-'.
54 3. Look in the "specs" file to determine which program or option
55 list should be given the argument, e.g., "cc1_options". Add the
56 appropriate syntax for the shorter option version to the
57 corresponding "const char *" entry in this file. Omit the first
58 `-' from the option. For example, use `-bar', rather than `--bar'.
60 4. If the argument takes an argument, e.g., `--baz argument1',
61 modify either DEFAULT_SWITCH_TAKES_ARG or
62 DEFAULT_WORD_SWITCH_TAKES_ARG in this file. Omit the first `-'
63 from `--baz'.
65 5. Document the option in this file's display_help(). If the
66 option is passed to a subprogram, modify its corresponding
67 function, e.g., cppinit.c:print_help() or toplev.c:display_help(),
68 instead.
70 6. Compile and test. Make sure that your new specs file is being
71 read. For example, use a debugger to investigate the value of
72 "specs_file" in main(). */
74 #include "config.h"
75 #include "system.h"
76 #include "coretypes.h"
77 #include "multilib.h" /* before tm.h */
78 #include "tm.h"
79 #include <signal.h>
80 #if ! defined( SIGCHLD ) && defined( SIGCLD )
81 # define SIGCHLD SIGCLD
82 #endif
83 #include "obstack.h"
84 #include "intl.h"
85 #include "prefix.h"
86 #include "gcc.h"
87 #include "flags.h"
89 #ifdef HAVE_SYS_RESOURCE_H
90 #include <sys/resource.h>
91 #endif
92 #if defined (HAVE_DECL_GETRUSAGE) && !HAVE_DECL_GETRUSAGE
93 extern int getrusage (int, struct rusage *);
94 #endif
96 /* By default there is no special suffix for target executables. */
97 /* FIXME: when autoconf is fixed, remove the host check - dj */
98 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
99 #define HAVE_TARGET_EXECUTABLE_SUFFIX
100 #endif
102 /* By default there is no special suffix for host executables. */
103 #ifdef HOST_EXECUTABLE_SUFFIX
104 #define HAVE_HOST_EXECUTABLE_SUFFIX
105 #else
106 #define HOST_EXECUTABLE_SUFFIX ""
107 #endif
109 /* By default, the suffix for target object files is ".o". */
110 #ifdef TARGET_OBJECT_SUFFIX
111 #define HAVE_TARGET_OBJECT_SUFFIX
112 #else
113 #define TARGET_OBJECT_SUFFIX ".o"
114 #endif
116 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
118 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
119 #ifndef LIBRARY_PATH_ENV
120 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
121 #endif
123 #ifndef HAVE_KILL
124 #define kill(p,s) raise(s)
125 #endif
127 /* If a stage of compilation returns an exit status >= 1,
128 compilation of that file ceases. */
130 #define MIN_FATAL_STATUS 1
132 /* Flag set by cppspec.c to 1. */
133 int is_cpp_driver;
135 /* Flag saying to pass the greatest exit code returned by a sub-process
136 to the calling program. */
137 static int pass_exit_codes;
139 /* Definition of string containing the arguments given to configure. */
140 #include "configargs.h"
142 /* Flag saying to print the directories gcc will search through looking for
143 programs, libraries, etc. */
145 static int print_search_dirs;
147 /* Flag saying to print the full filename of this file
148 as found through our usual search mechanism. */
150 static const char *print_file_name = NULL;
152 /* As print_file_name, but search for executable file. */
154 static const char *print_prog_name = NULL;
156 /* Flag saying to print the relative path we'd use to
157 find libgcc.a given the current compiler flags. */
159 static int print_multi_directory;
161 /* Flag saying to print the relative path we'd use to
162 find OS libraries given the current compiler flags. */
164 static int print_multi_os_directory;
166 /* Flag saying to print the list of subdirectories and
167 compiler flags used to select them in a standard form. */
169 static int print_multi_lib;
171 /* Flag saying to print the command line options understood by gcc and its
172 sub-processes. */
174 static int print_help_list;
176 /* Flag indicating whether we should print the command and arguments */
178 static int verbose_flag;
180 /* Flag indicating whether we should ONLY print the command and
181 arguments (like verbose_flag) without executing the command.
182 Displayed arguments are quoted so that the generated command
183 line is suitable for execution. This is intended for use in
184 shell scripts to capture the driver-generated command line. */
185 static int verbose_only_flag;
187 /* Flag indicating to print target specific command line options. */
189 static int target_help_flag;
191 /* Flag indicating whether we should report subprocess execution times
192 (if this is supported by the system - see pexecute.c). */
194 static int report_times;
196 /* Nonzero means place this string before uses of /, so that include
197 and library files can be found in an alternate location. */
199 #ifdef TARGET_SYSTEM_ROOT
200 static const char *target_system_root = TARGET_SYSTEM_ROOT;
201 #else
202 static const char *target_system_root = 0;
203 #endif
205 /* Nonzero means pass the updated target_system_root to the compiler. */
207 static int target_system_root_changed;
209 /* Nonzero means append this string to target_system_root. */
211 static const char *target_sysroot_suffix = 0;
213 /* Nonzero means append this string to target_system_root for headers. */
215 static const char *target_sysroot_hdrs_suffix = 0;
217 /* Nonzero means write "temp" files in source directory
218 and use the source file's name in them, and don't delete them. */
220 static int save_temps_flag;
222 /* Nonzero means pass multiple source files to the compiler at one time. */
224 static int combine_flag = 0;
226 /* Nonzero means use pipes to communicate between subprocesses.
227 Overridden by either of the above two flags. */
229 static int use_pipes;
231 /* The compiler version. */
233 static const char *compiler_version;
235 /* The target version specified with -V */
237 static const char *const spec_version = DEFAULT_TARGET_VERSION;
239 /* The target machine specified with -b. */
241 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
243 /* Nonzero if cross-compiling.
244 When -b is used, the value comes from the `specs' file. */
246 #ifdef CROSS_COMPILE
247 static const char *cross_compile = "1";
248 #else
249 static const char *cross_compile = "0";
250 #endif
252 #ifdef MODIFY_TARGET_NAME
254 /* Information on how to alter the target name based on a command-line
255 switch. The only case we support now is simply appending or deleting a
256 string to or from the end of the first part of the configuration name. */
258 static const struct modify_target
260 const char *const sw;
261 const enum add_del {ADD, DELETE} add_del;
262 const char *const str;
264 modify_target[] = MODIFY_TARGET_NAME;
265 #endif
267 /* The number of errors that have occurred; the link phase will not be
268 run if this is nonzero. */
269 static int error_count = 0;
271 /* Greatest exit code of sub-processes that has been encountered up to
272 now. */
273 static int greatest_status = 1;
275 /* This is the obstack which we use to allocate many strings. */
277 static struct obstack obstack;
279 /* This is the obstack to build an environment variable to pass to
280 collect2 that describes all of the relevant switches of what to
281 pass the compiler in building the list of pointers to constructors
282 and destructors. */
284 static struct obstack collect_obstack;
286 /* These structs are used to collect resource usage information for
287 subprocesses. */
288 #ifdef HAVE_GETRUSAGE
289 static struct rusage rus, prus;
290 #endif
292 /* Forward declaration for prototypes. */
293 struct path_prefix;
294 struct prefix_list;
296 static void init_spec (void);
297 static void store_arg (const char *, int, int);
298 static char *load_specs (const char *);
299 static void read_specs (const char *, int);
300 static void set_spec (const char *, const char *);
301 static struct compiler *lookup_compiler (const char *, size_t, const char *);
302 static char *build_search_list (struct path_prefix *, const char *, int);
303 static void putenv_from_prefixes (struct path_prefix *, const char *);
304 static int access_check (const char *, int);
305 static char *find_a_file (struct path_prefix *, const char *, int, int);
306 static void add_prefix (struct path_prefix *, const char *, const char *,
307 int, int, int);
308 static void add_sysrooted_prefix (struct path_prefix *, const char *,
309 const char *, int, int, int);
310 static void translate_options (int *, const char *const **);
311 static char *skip_whitespace (char *);
312 static void delete_if_ordinary (const char *);
313 static void delete_temp_files (void);
314 static void delete_failure_queue (void);
315 static void clear_failure_queue (void);
316 static int check_live_switch (int, int);
317 static const char *handle_braces (const char *);
318 static inline bool input_suffix_matches (const char *, const char *);
319 static inline bool switch_matches (const char *, const char *, int);
320 static inline void mark_matching_switches (const char *, const char *, int);
321 static inline void process_marked_switches (void);
322 static const char *process_brace_body (const char *, const char *, const char *, int, int);
323 static const struct spec_function *lookup_spec_function (const char *);
324 static const char *eval_spec_function (const char *, const char *);
325 static const char *handle_spec_function (const char *);
326 static char *save_string (const char *, int);
327 static void set_collect_gcc_options (void);
328 static void do_spec_path (struct prefix_list *, const char *, int, int, int, const char *, const char *);
329 static int do_spec_1 (const char *, int, const char *);
330 static int do_spec_2 (const char *);
331 static void do_option_spec (const char *, const char *);
332 static void do_self_spec (const char *);
333 static const char *find_file (const char *);
334 static int is_directory (const char *, const char *, int);
335 static const char *validate_switches (const char *);
336 static void validate_all_switches (void);
337 static inline void validate_switches_from_spec (const char *);
338 static void give_switch (int, int);
339 static int used_arg (const char *, int);
340 static int default_arg (const char *, int);
341 static void set_multilib_dir (void);
342 static void print_multilib_info (void);
343 static void perror_with_name (const char *);
344 static void pfatal_pexecute (const char *, const char *) ATTRIBUTE_NORETURN;
345 static void notice (const char *, ...) ATTRIBUTE_PRINTF_1;
346 static void display_help (void);
347 static void add_preprocessor_option (const char *, int);
348 static void add_assembler_option (const char *, int);
349 static void add_linker_option (const char *, int);
350 static void process_command (int, const char **);
351 static int execute (void);
352 static void alloc_args (void);
353 static void clear_args (void);
354 static void fatal_error (int);
355 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
356 static void init_gcc_specs (struct obstack *, const char *, const char *,
357 const char *);
358 #endif
359 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
360 static const char *convert_filename (const char *, int, int);
361 #endif
363 static const char *if_exists_spec_function (int, const char **);
364 static const char *if_exists_else_spec_function (int, const char **);
365 static const char *replace_outfile_spec_function (int, const char **);
367 /* The Specs Language
369 Specs are strings containing lines, each of which (if not blank)
370 is made up of a program name, and arguments separated by spaces.
371 The program name must be exact and start from root, since no path
372 is searched and it is unreliable to depend on the current working directory.
373 Redirection of input or output is not supported; the subprograms must
374 accept filenames saying what files to read and write.
376 In addition, the specs can contain %-sequences to substitute variable text
377 or for conditional text. Here is a table of all defined %-sequences.
378 Note that spaces are not generated automatically around the results of
379 expanding these sequences; therefore, you can concatenate them together
380 or with constant text in a single argument.
382 %% substitute one % into the program name or argument.
383 %i substitute the name of the input file being processed.
384 %b substitute the basename of the input file being processed.
385 This is the substring up to (and not including) the last period
386 and not including the directory.
387 %B same as %b, but include the file suffix (text after the last period).
388 %gSUFFIX
389 substitute a file name that has suffix SUFFIX and is chosen
390 once per compilation, and mark the argument a la %d. To reduce
391 exposure to denial-of-service attacks, the file name is now
392 chosen in a way that is hard to predict even when previously
393 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
394 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
395 the regexp "[.A-Za-z]*%O"; "%O" is treated exactly as if it
396 had been pre-processed. Previously, %g was simply substituted
397 with a file name chosen once per compilation, without regard
398 to any appended suffix (which was therefore treated just like
399 ordinary text), making such attacks more likely to succeed.
400 %|SUFFIX
401 like %g, but if -pipe is in effect, expands simply to "-".
402 %mSUFFIX
403 like %g, but if -pipe is in effect, expands to nothing. (We have both
404 %| and %m to accommodate differences between system assemblers; see
405 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
406 %uSUFFIX
407 like %g, but generates a new temporary file name even if %uSUFFIX
408 was already seen.
409 %USUFFIX
410 substitutes the last file name generated with %uSUFFIX, generating a
411 new one if there is no such last file name. In the absence of any
412 %uSUFFIX, this is just like %gSUFFIX, except they don't share
413 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
414 would involve the generation of two distinct file names, one
415 for each `%g.s' and another for each `%U.s'. Previously, %U was
416 simply substituted with a file name chosen for the previous %u,
417 without regard to any appended suffix.
418 %jSUFFIX
419 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
420 writable, and if save-temps is off; otherwise, substitute the name
421 of a temporary file, just like %u. This temporary file is not
422 meant for communication between processes, but rather as a junk
423 disposal mechanism.
424 %.SUFFIX
425 substitutes .SUFFIX for the suffixes of a matched switch's args when
426 it is subsequently output with %*. SUFFIX is terminated by the next
427 space or %.
428 %d marks the argument containing or following the %d as a
429 temporary file name, so that that file will be deleted if CC exits
430 successfully. Unlike %g, this contributes no text to the argument.
431 %w marks the argument containing or following the %w as the
432 "output file" of this compilation. This puts the argument
433 into the sequence of arguments that %o will substitute later.
434 %V indicates that this compilation produces no "output file".
435 %W{...}
436 like %{...} but mark last argument supplied within
437 as a file to be deleted on failure.
438 %o substitutes the names of all the output files, with spaces
439 automatically placed around them. You should write spaces
440 around the %o as well or the results are undefined.
441 %o is for use in the specs for running the linker.
442 Input files whose names have no recognized suffix are not compiled
443 at all, but they are included among the output files, so they will
444 be linked.
445 %O substitutes the suffix for object files. Note that this is
446 handled specially when it immediately follows %g, %u, or %U
447 (with or without a suffix argument) because of the need for
448 those to form complete file names. The handling is such that
449 %O is treated exactly as if it had already been substituted,
450 except that %g, %u, and %U do not currently support additional
451 SUFFIX characters following %O as they would following, for
452 example, `.o'.
453 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
454 (made from TARGET_SYSTEM_ROOT), and -isystem (made from COMPILER_PATH
455 and -B options) as necessary.
456 %s current argument is the name of a library or startup file of some sort.
457 Search for that file in a standard list of directories
458 and substitute the full name found.
459 %eSTR Print STR as an error message. STR is terminated by a newline.
460 Use this when inconsistent options are detected.
461 %nSTR Print STR as a notice. STR is terminated by a newline.
462 %x{OPTION} Accumulate an option for %X.
463 %X Output the accumulated linker options specified by compilations.
464 %Y Output the accumulated assembler options specified by compilations.
465 %Z Output the accumulated preprocessor options specified by compilations.
466 %a process ASM_SPEC as a spec.
467 This allows config.h to specify part of the spec for running as.
468 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
469 used here. This can be used to run a post-processor after the
470 assembler has done its job.
471 %D Dump out a -L option for each directory in startfile_prefixes.
472 If multilib_dir is set, extra entries are generated with it affixed.
473 %l process LINK_SPEC as a spec.
474 %L process LIB_SPEC as a spec.
475 %G process LIBGCC_SPEC as a spec.
476 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
477 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
478 %C process CPP_SPEC as a spec.
479 %1 process CC1_SPEC as a spec.
480 %2 process CC1PLUS_SPEC as a spec.
481 %* substitute the variable part of a matched option. (See below.)
482 Note that each comma in the substituted string is replaced by
483 a single space.
484 %<S remove all occurrences of -S from the command line.
485 Note - this command is position dependent. % commands in the
486 spec string before this one will see -S, % commands in the
487 spec string after this one will not.
488 %<S* remove all occurrences of all switches beginning with -S from the
489 command line.
490 %:function(args)
491 Call the named function FUNCTION, passing it ARGS. ARGS is
492 first processed as a nested spec string, then split into an
493 argument vector in the usual fashion. The function returns
494 a string which is processed as if it had appeared literally
495 as part of the current spec.
496 %{S} substitutes the -S switch, if that switch was given to CC.
497 If that switch was not specified, this substitutes nothing.
498 Here S is a metasyntactic variable.
499 %{S*} substitutes all the switches specified to CC whose names start
500 with -S. This is used for -o, -I, etc; switches that take
501 arguments. CC considers `-o foo' as being one switch whose
502 name starts with `o'. %{o*} would substitute this text,
503 including the space; thus, two arguments would be generated.
504 %{S*&T*} likewise, but preserve order of S and T options (the order
505 of S and T in the spec is not significant). Can be any number
506 of ampersand-separated variables; for each the wild card is
507 optional. Useful for CPP as %{D*&U*&A*}.
509 %{S:X} substitutes X, if the -S switch was given to CC.
510 %{!S:X} substitutes X, if the -S switch was NOT given to CC.
511 %{S*:X} substitutes X if one or more switches whose names start
512 with -S was given to CC. Normally X is substituted only
513 once, no matter how many such switches appeared. However,
514 if %* appears somewhere in X, then X will be substituted
515 once for each matching switch, with the %* replaced by the
516 part of that switch that matched the '*'.
517 %{.S:X} substitutes X, if processing a file with suffix S.
518 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
520 %{S|T:X} substitutes X if either -S or -T was given to CC. This may be
521 combined with !, ., and * as above binding stronger than the OR.
522 If %* appears in X, all of the alternatives must be starred, and
523 only the first matching alternative is substituted.
524 %{S:X; if S was given to CC, substitutes X;
525 T:Y; else if T was given to CC, substitutes Y;
526 :D} else substitutes D. There can be as many clauses as you need.
527 This may be combined with ., !, |, and * as above.
529 %(Spec) processes a specification defined in a specs file as *Spec:
530 %[Spec] as above, but put __ around -D arguments
532 The conditional text X in a %{S:X} or similar construct may contain
533 other nested % constructs or spaces, or even newlines. They are
534 processed as usual, as described above. Trailing white space in X is
535 ignored. White space may also appear anywhere on the left side of the
536 colon in these constructs, except between . or * and the corresponding
537 word.
539 The -O, -f, -m, and -W switches are handled specifically in these
540 constructs. If another value of -O or the negated form of a -f, -m, or
541 -W switch is found later in the command line, the earlier switch
542 value is ignored, except with {S*} where S is just one letter; this
543 passes all matching options.
545 The character | at the beginning of the predicate text is used to indicate
546 that a command should be piped to the following command, but only if -pipe
547 is specified.
549 Note that it is built into CC which switches take arguments and which
550 do not. You might think it would be useful to generalize this to
551 allow each compiler's spec to say which switches take arguments. But
552 this cannot be done in a consistent fashion. CC cannot even decide
553 which input files have been specified without knowing which switches
554 take arguments, and it must know which input files to compile in order
555 to tell which compilers to run.
557 CC also knows implicitly that arguments starting in `-l' are to be
558 treated as compiler output files, and passed to the linker in their
559 proper position among the other output files. */
561 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
563 /* config.h can define ASM_SPEC to provide extra args to the assembler
564 or extra switch-translations. */
565 #ifndef ASM_SPEC
566 #define ASM_SPEC ""
567 #endif
569 /* config.h can define ASM_FINAL_SPEC to run a post processor after
570 the assembler has run. */
571 #ifndef ASM_FINAL_SPEC
572 #define ASM_FINAL_SPEC ""
573 #endif
575 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
576 or extra switch-translations. */
577 #ifndef CPP_SPEC
578 #define CPP_SPEC ""
579 #endif
581 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
582 or extra switch-translations. */
583 #ifndef CC1_SPEC
584 #define CC1_SPEC ""
585 #endif
587 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
588 or extra switch-translations. */
589 #ifndef CC1PLUS_SPEC
590 #define CC1PLUS_SPEC ""
591 #endif
593 /* config.h can define LINK_SPEC to provide extra args to the linker
594 or extra switch-translations. */
595 #ifndef LINK_SPEC
596 #define LINK_SPEC ""
597 #endif
599 /* config.h can define LIB_SPEC to override the default libraries. */
600 #ifndef LIB_SPEC
601 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
602 #endif
604 /* mudflap specs */
605 #ifndef MFWRAP_SPEC
606 /* XXX: valid only for GNU ld */
607 /* XXX: should exactly match hooks provided by libmudflap.a */
608 #define MFWRAP_SPEC " %{static: %{fmudflap|fmudflapth: \
609 --wrap=malloc --wrap=free --wrap=calloc --wrap=realloc\
610 --wrap=mmap --wrap=munmap --wrap=alloca\
611 } %{fmudflapth: --wrap=pthread_create --wrap=pthread_join --wrap=pthread_exit\
612 }} %{fmudflap|fmudflapth: --wrap=main}"
613 #endif
614 #ifndef MFLIB_SPEC
615 #define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}"
616 #endif
618 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
619 included. */
620 #ifndef LIBGCC_SPEC
621 #if defined(REAL_LIBGCC_SPEC)
622 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
623 #elif defined(LINK_LIBGCC_SPECIAL_1)
624 /* Have gcc do the search for libgcc.a. */
625 #define LIBGCC_SPEC "libgcc.a%s"
626 #else
627 #define LIBGCC_SPEC "-lgcc"
628 #endif
629 #endif
631 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
632 #ifndef STARTFILE_SPEC
633 #define STARTFILE_SPEC \
634 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
635 #endif
637 /* config.h can define SWITCHES_NEED_SPACES to control which options
638 require spaces between the option and the argument. */
639 #ifndef SWITCHES_NEED_SPACES
640 #define SWITCHES_NEED_SPACES ""
641 #endif
643 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
644 #ifndef ENDFILE_SPEC
645 #define ENDFILE_SPEC ""
646 #endif
648 #ifndef LINKER_NAME
649 #define LINKER_NAME "collect2"
650 #endif
652 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
653 to the assembler. */
654 #ifndef ASM_DEBUG_SPEC
655 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
656 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
657 # define ASM_DEBUG_SPEC \
658 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
659 ? "%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}" \
660 : "%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}")
661 # else
662 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
663 # define ASM_DEBUG_SPEC "%{g*:--gstabs}"
664 # endif
665 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
666 # define ASM_DEBUG_SPEC "%{g*:--gdwarf2}"
667 # endif
668 # endif
669 #endif
670 #ifndef ASM_DEBUG_SPEC
671 # define ASM_DEBUG_SPEC ""
672 #endif
674 /* Here is the spec for running the linker, after compiling all files. */
676 /* This is overridable by the target in case they need to specify the
677 -lgcc and -lc order specially, yet not require them to override all
678 of LINK_COMMAND_SPEC. */
679 #ifndef LINK_GCC_C_SEQUENCE_SPEC
680 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
681 #endif
683 #ifndef LINK_PIE_SPEC
684 #ifdef HAVE_LD_PIE
685 #define LINK_PIE_SPEC "%{pie:-pie} "
686 #else
687 #define LINK_PIE_SPEC "%{pie:} "
688 #endif
689 #endif
691 /* -u* was put back because both BSD and SysV seem to support it. */
692 /* %{static:} simply prevents an error message if the target machine
693 doesn't handle -static. */
694 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
695 scripts which exist in user specified directories, or in standard
696 directories. */
697 #ifndef LINK_COMMAND_SPEC
698 #define LINK_COMMAND_SPEC "\
699 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
700 %(linker) %l " LINK_PIE_SPEC "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\
701 %{s} %{t} %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
702 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o %(mflib)\
703 %{fprofile-arcs|fprofile-generate|coverage:-lgcov}\
704 %{!nostdlib:%{!nodefaultlibs:%(link_gcc_c_sequence)}}\
705 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
706 #endif
708 #ifndef LINK_LIBGCC_SPEC
709 /* Generate -L options for startfile prefix list. */
710 # define LINK_LIBGCC_SPEC "%D"
711 #endif
713 #ifndef STARTFILE_PREFIX_SPEC
714 # define STARTFILE_PREFIX_SPEC ""
715 #endif
717 #ifndef SYSROOT_SUFFIX_SPEC
718 # define SYSROOT_SUFFIX_SPEC ""
719 #endif
721 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
722 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
723 #endif
725 static const char *asm_debug;
726 static const char *cpp_spec = CPP_SPEC;
727 static const char *cc1_spec = CC1_SPEC;
728 static const char *cc1plus_spec = CC1PLUS_SPEC;
729 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
730 static const char *asm_spec = ASM_SPEC;
731 static const char *asm_final_spec = ASM_FINAL_SPEC;
732 static const char *link_spec = LINK_SPEC;
733 static const char *lib_spec = LIB_SPEC;
734 static const char *mfwrap_spec = MFWRAP_SPEC;
735 static const char *mflib_spec = MFLIB_SPEC;
736 static const char *libgcc_spec = LIBGCC_SPEC;
737 static const char *endfile_spec = ENDFILE_SPEC;
738 static const char *startfile_spec = STARTFILE_SPEC;
739 static const char *switches_need_spaces = SWITCHES_NEED_SPACES;
740 static const char *linker_name_spec = LINKER_NAME;
741 static const char *link_command_spec = LINK_COMMAND_SPEC;
742 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
743 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
744 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
745 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
747 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
748 There should be no need to override these in target dependent files,
749 but we need to copy them to the specs file so that newer versions
750 of the GCC driver can correctly drive older tool chains with the
751 appropriate -B options. */
753 /* When cpplib handles traditional preprocessing, get rid of this, and
754 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
755 that we default the front end language better. */
756 static const char *trad_capable_cpp =
757 "cc1 -E %{traditional|ftraditional|traditional-cpp:-traditional-cpp}";
759 /* We don't wrap .d files in %W{} since a missing .d file, and
760 therefore no dependency entry, confuses make into thinking a .o
761 file that happens to exist is up-to-date. */
762 static const char *cpp_unique_options =
763 "%{C|CC:%{!E:%eGCC does not support -C or -CC without -E}}\
764 %{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
765 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
766 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
767 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
768 %{!E:%{!M:%{!MM:%{MD|MMD:%{o*:-MQ %*}}}}}\
769 %{remap} %{g3:-dD} %{H} %C %{D*&U*&A*} %{i*} %Z %i\
770 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
771 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
772 %{E|M|MM:%W{o*}}";
774 /* This contains cpp options which are common with cc1_options and are passed
775 only when preprocessing only to avoid duplication. We pass the cc1 spec
776 options to the preprocessor so that it the cc1 spec may manipulate
777 options used to set target flags. Those special target flags settings may
778 in turn cause preprocessor symbols to be defined specially. */
779 static const char *cpp_options =
780 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
781 %{f*} %{g*:%{!g0:%{!fno-working-directory:-fworking-directory}}} %{O*}\
782 %{undef} %{save-temps:-fpch-preprocess}";
784 /* This contains cpp options which are not passed when the preprocessor
785 output will be used by another program. */
786 static const char *cpp_debug_options = "%{d*}";
788 /* NB: This is shared amongst all front-ends. */
789 static const char *cc1_options =
790 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
791 %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\
792 %{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}%{!c:%{!S:-auxbase %b}}\
793 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
794 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
795 %{Qn:-fno-ident} %{--help:--help}\
796 %{--target-help:--target-help}\
797 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
798 %{fsyntax-only:-o %j} %{-param*}\
799 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\
800 %{coverage:-fprofile-arcs -ftest-coverage}";
802 static const char *asm_options =
803 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
805 static const char *invoke_as =
806 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
807 "%{!S:-o %|.s |\n as %(asm_options) %|.s %A }";
808 #else
809 "%{!S:-o %|.s |\n as %(asm_options) %m.s %A }";
810 #endif
812 /* Some compilers have limits on line lengths, and the multilib_select
813 and/or multilib_matches strings can be very long, so we build them at
814 run time. */
815 static struct obstack multilib_obstack;
816 static const char *multilib_select;
817 static const char *multilib_matches;
818 static const char *multilib_defaults;
819 static const char *multilib_exclusions;
821 /* Check whether a particular argument is a default argument. */
823 #ifndef MULTILIB_DEFAULTS
824 #define MULTILIB_DEFAULTS { "" }
825 #endif
827 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
829 #ifndef DRIVER_SELF_SPECS
830 #define DRIVER_SELF_SPECS ""
831 #endif
833 static const char *const driver_self_specs[] = { DRIVER_SELF_SPECS };
835 #ifndef OPTION_DEFAULT_SPECS
836 #define OPTION_DEFAULT_SPECS { "", "" }
837 #endif
839 struct default_spec
841 const char *name;
842 const char *spec;
845 static const struct default_spec
846 option_default_specs[] = { OPTION_DEFAULT_SPECS };
848 struct user_specs
850 struct user_specs *next;
851 const char *filename;
854 static struct user_specs *user_specs_head, *user_specs_tail;
856 #ifndef SWITCH_TAKES_ARG
857 #define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR)
858 #endif
860 #ifndef WORD_SWITCH_TAKES_ARG
861 #define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
862 #endif
864 #ifdef HAVE_TARGET_EXECUTABLE_SUFFIX
865 /* This defines which switches stop a full compilation. */
866 #define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \
867 ((CHAR) == 'c' || (CHAR) == 'S')
869 #ifndef SWITCH_CURTAILS_COMPILATION
870 #define SWITCH_CURTAILS_COMPILATION(CHAR) \
871 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR)
872 #endif
873 #endif
875 /* Record the mapping from file suffixes for compilation specs. */
877 struct compiler
879 const char *suffix; /* Use this compiler for input files
880 whose names end in this suffix. */
882 const char *spec; /* To use this compiler, run this spec. */
884 const char *cpp_spec; /* If non-NULL, substitute this spec
885 for `%C', rather than the usual
886 cpp_spec. */
887 const int combinable; /* If nonzero, compiler can deal with
888 multiple source files at once (IMA). */
889 const int needs_preprocessing; /* If nonzero, source files need to
890 be run through a preprocessor. */
893 /* Pointer to a vector of `struct compiler' that gives the spec for
894 compiling a file, based on its suffix.
895 A file that does not end in any of these suffixes will be passed
896 unchanged to the loader and nothing else will be done to it.
898 An entry containing two 0s is used to terminate the vector.
900 If multiple entries match a file, the last matching one is used. */
902 static struct compiler *compilers;
904 /* Number of entries in `compilers', not counting the null terminator. */
906 static int n_compilers;
908 /* The default list of file name suffixes and their compilation specs. */
910 static const struct compiler default_compilers[] =
912 /* Add lists of suffixes of known languages here. If those languages
913 were not present when we built the driver, we will hit these copies
914 and be given a more meaningful error than "file not used since
915 linking is not done". */
916 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
917 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
918 {".mii", "#Objective-C++", 0, 0, 0},
919 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
920 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
921 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
922 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
923 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
924 {".f", "#Fortran", 0, 0, 0}, {".for", "#Fortran", 0, 0, 0},
925 {".F", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
926 {".FPP", "#Fortran", 0, 0, 0},
927 {".f90", "#Fortran 95", 0, 0, 0}, {".f95", "#Fortran 95", 0, 0, 0},
928 {".fpp", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
929 {".FOR", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
930 {".r", "#Ratfor", 0, 0, 0},
931 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
932 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
933 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
934 /* Next come the entries for C. */
935 {".c", "@c", 0, 1, 1},
936 {"@c",
937 /* cc1 has an integrated ISO C preprocessor. We should invoke the
938 external preprocessor if -save-temps is given. */
939 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
940 %{!E:%{!M:%{!MM:\
941 %{traditional|ftraditional:\
942 %eGNU C no longer supports -traditional without -E}\
943 %{!combine:\
944 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
945 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\
946 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} \
947 %(cc1_options)}\
948 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
949 cc1 %(cpp_unique_options) %(cc1_options)}}}\
950 %{!fsyntax-only:%(invoke_as)}} \
951 %{combine:\
952 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
953 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i}}\
954 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
955 cc1 %(cpp_unique_options) %(cc1_options)}}\
956 %{!fsyntax-only:%(invoke_as)}}}}}}", 0, 1, 1},
957 {"-",
958 "%{!E:%e-E required when input is from standard input}\
959 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
960 {".h", "@c-header", 0, 0, 0},
961 {"@c-header",
962 /* cc1 has an integrated ISO C preprocessor. We should invoke the
963 external preprocessor if -save-temps is given. */
964 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
965 %{!E:%{!M:%{!MM:\
966 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
967 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\
968 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} \
969 %(cc1_options)\
970 -o %g.s %{!o*:--output-pch=%i.gch}\
971 %W{o*:--output-pch=%*}%V}\
972 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
973 cc1 %(cpp_unique_options) %(cc1_options)\
974 -o %g.s %{!o*:--output-pch=%i.gch}\
975 %W{o*:--output-pch=%*}%V}}}}}}", 0, 0, 0},
976 {".i", "@cpp-output", 0, 1, 0},
977 {"@cpp-output",
978 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 1, 0},
979 {".s", "@assembler", 0, 1, 0},
980 {"@assembler",
981 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 1, 0},
982 {".S", "@assembler-with-cpp", 0, 1, 0},
983 {"@assembler-with-cpp",
984 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
985 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
986 %{E|M|MM:%(cpp_debug_options)}\
987 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
988 as %(asm_debug) %(asm_options) %|.s %A }}}}"
989 #else
990 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
991 %{E|M|MM:%(cpp_debug_options)}\
992 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
993 as %(asm_debug) %(asm_options) %m.s %A }}}}"
994 #endif
995 , 0, 1, 0},
997 #include "specs.h"
998 /* Mark end of table. */
999 {0, 0, 0, 0, 0}
1002 /* Number of elements in default_compilers, not counting the terminator. */
1004 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
1006 /* A vector of options to give to the linker.
1007 These options are accumulated by %x,
1008 and substituted into the linker command with %X. */
1009 static int n_linker_options;
1010 static char **linker_options;
1012 /* A vector of options to give to the assembler.
1013 These options are accumulated by -Wa,
1014 and substituted into the assembler command with %Y. */
1015 static int n_assembler_options;
1016 static char **assembler_options;
1018 /* A vector of options to give to the preprocessor.
1019 These options are accumulated by -Wp,
1020 and substituted into the preprocessor command with %Z. */
1021 static int n_preprocessor_options;
1022 static char **preprocessor_options;
1024 /* Define how to map long options into short ones. */
1026 /* This structure describes one mapping. */
1027 struct option_map
1029 /* The long option's name. */
1030 const char *const name;
1031 /* The equivalent short option. */
1032 const char *const equivalent;
1033 /* Argument info. A string of flag chars; NULL equals no options.
1034 a => argument required.
1035 o => argument optional.
1036 j => join argument to equivalent, making one word.
1037 * => require other text after NAME as an argument. */
1038 const char *const arg_info;
1041 /* This is the table of mappings. Mappings are tried sequentially
1042 for each option encountered; the first one that matches, wins. */
1044 static const struct option_map option_map[] =
1046 {"--all-warnings", "-Wall", 0},
1047 {"--ansi", "-ansi", 0},
1048 {"--assemble", "-S", 0},
1049 {"--assert", "-A", "a"},
1050 {"--classpath", "-fclasspath=", "aj"},
1051 {"--bootclasspath", "-fbootclasspath=", "aj"},
1052 {"--CLASSPATH", "-fclasspath=", "aj"},
1053 {"--combine", "-combine", 0},
1054 {"--comments", "-C", 0},
1055 {"--comments-in-macros", "-CC", 0},
1056 {"--compile", "-c", 0},
1057 {"--debug", "-g", "oj"},
1058 {"--define-macro", "-D", "aj"},
1059 {"--dependencies", "-M", 0},
1060 {"--dump", "-d", "a"},
1061 {"--dumpbase", "-dumpbase", "a"},
1062 {"--encoding", "-fencoding=", "aj"},
1063 {"--entry", "-e", 0},
1064 {"--extra-warnings", "-W", 0},
1065 {"--extdirs", "-fextdirs=", "aj"},
1066 {"--for-assembler", "-Wa", "a"},
1067 {"--for-linker", "-Xlinker", "a"},
1068 {"--force-link", "-u", "a"},
1069 {"--coverage", "-coverage", 0},
1070 {"--imacros", "-imacros", "a"},
1071 {"--include", "-include", "a"},
1072 {"--include-barrier", "-I-", 0},
1073 {"--include-directory", "-I", "aj"},
1074 {"--include-directory-after", "-idirafter", "a"},
1075 {"--include-prefix", "-iprefix", "a"},
1076 {"--include-with-prefix", "-iwithprefix", "a"},
1077 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
1078 {"--include-with-prefix-after", "-iwithprefix", "a"},
1079 {"--language", "-x", "a"},
1080 {"--library-directory", "-L", "a"},
1081 {"--machine", "-m", "aj"},
1082 {"--machine-", "-m", "*j"},
1083 {"--no-integrated-cpp", "-no-integrated-cpp", 0},
1084 {"--no-line-commands", "-P", 0},
1085 {"--no-precompiled-includes", "-noprecomp", 0},
1086 {"--no-standard-includes", "-nostdinc", 0},
1087 {"--no-standard-libraries", "-nostdlib", 0},
1088 {"--no-warnings", "-w", 0},
1089 {"--optimize", "-O", "oj"},
1090 {"--output", "-o", "a"},
1091 {"--output-class-directory", "-foutput-class-dir=", "ja"},
1092 {"--param", "--param", "a"},
1093 {"--pass-exit-codes", "-pass-exit-codes", 0},
1094 {"--pedantic", "-pedantic", 0},
1095 {"--pedantic-errors", "-pedantic-errors", 0},
1096 {"--pie", "-pie", 0},
1097 {"--pipe", "-pipe", 0},
1098 {"--prefix", "-B", "a"},
1099 {"--preprocess", "-E", 0},
1100 {"--print-search-dirs", "-print-search-dirs", 0},
1101 {"--print-file-name", "-print-file-name=", "aj"},
1102 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
1103 {"--print-missing-file-dependencies", "-MG", 0},
1104 {"--print-multi-lib", "-print-multi-lib", 0},
1105 {"--print-multi-directory", "-print-multi-directory", 0},
1106 {"--print-multi-os-directory", "-print-multi-os-directory", 0},
1107 {"--print-prog-name", "-print-prog-name=", "aj"},
1108 {"--profile", "-p", 0},
1109 {"--profile-blocks", "-a", 0},
1110 {"--quiet", "-q", 0},
1111 {"--resource", "-fcompile-resource=", "aj"},
1112 {"--save-temps", "-save-temps", 0},
1113 {"--shared", "-shared", 0},
1114 {"--silent", "-q", 0},
1115 {"--specs", "-specs=", "aj"},
1116 {"--static", "-static", 0},
1117 {"--std", "-std=", "aj"},
1118 {"--symbolic", "-symbolic", 0},
1119 {"--time", "-time", 0},
1120 {"--trace-includes", "-H", 0},
1121 {"--traditional", "-traditional", 0},
1122 {"--traditional-cpp", "-traditional-cpp", 0},
1123 {"--trigraphs", "-trigraphs", 0},
1124 {"--undefine-macro", "-U", "aj"},
1125 {"--user-dependencies", "-MM", 0},
1126 {"--verbose", "-v", 0},
1127 {"--warn-", "-W", "*j"},
1128 {"--write-dependencies", "-MD", 0},
1129 {"--write-user-dependencies", "-MMD", 0},
1130 {"--", "-f", "*j"}
1134 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1135 static const struct {
1136 const char *const option_found;
1137 const char *const replacements;
1138 } target_option_translations[] =
1140 TARGET_OPTION_TRANSLATE_TABLE,
1141 { 0, 0 }
1143 #endif
1145 /* Translate the options described by *ARGCP and *ARGVP.
1146 Make a new vector and store it back in *ARGVP,
1147 and store its length in *ARGVC. */
1149 static void
1150 translate_options (int *argcp, const char *const **argvp)
1152 int i;
1153 int argc = *argcp;
1154 const char *const *argv = *argvp;
1155 int newvsize = (argc + 2) * 2 * sizeof (const char *);
1156 const char **newv = xmalloc (newvsize);
1157 int newindex = 0;
1159 i = 0;
1160 newv[newindex++] = argv[i++];
1162 while (i < argc)
1164 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1165 int tott_idx;
1167 for (tott_idx = 0;
1168 target_option_translations[tott_idx].option_found;
1169 tott_idx++)
1171 if (strcmp (target_option_translations[tott_idx].option_found,
1172 argv[i]) == 0)
1174 int spaces = 1;
1175 const char *sp;
1176 char *np;
1178 for (sp = target_option_translations[tott_idx].replacements;
1179 *sp; sp++)
1181 if (*sp == ' ')
1182 spaces ++;
1185 newvsize += spaces * sizeof (const char *);
1186 newv = xrealloc (newv, newvsize);
1188 sp = target_option_translations[tott_idx].replacements;
1189 np = xstrdup (sp);
1191 while (1)
1193 while (*np == ' ')
1194 np++;
1195 if (*np == 0)
1196 break;
1197 newv[newindex++] = np;
1198 while (*np != ' ' && *np)
1199 np++;
1200 if (*np == 0)
1201 break;
1202 *np++ = 0;
1205 i ++;
1206 break;
1209 if (target_option_translations[tott_idx].option_found)
1210 continue;
1211 #endif
1213 /* Translate -- options. */
1214 if (argv[i][0] == '-' && argv[i][1] == '-')
1216 size_t j;
1217 /* Find a mapping that applies to this option. */
1218 for (j = 0; j < ARRAY_SIZE (option_map); j++)
1220 size_t optlen = strlen (option_map[j].name);
1221 size_t arglen = strlen (argv[i]);
1222 size_t complen = arglen > optlen ? optlen : arglen;
1223 const char *arginfo = option_map[j].arg_info;
1225 if (arginfo == 0)
1226 arginfo = "";
1228 if (!strncmp (argv[i], option_map[j].name, complen))
1230 const char *arg = 0;
1232 if (arglen < optlen)
1234 size_t k;
1235 for (k = j + 1; k < ARRAY_SIZE (option_map); k++)
1236 if (strlen (option_map[k].name) >= arglen
1237 && !strncmp (argv[i], option_map[k].name, arglen))
1239 error ("ambiguous abbreviation %s", argv[i]);
1240 break;
1243 if (k != ARRAY_SIZE (option_map))
1244 break;
1247 if (arglen > optlen)
1249 /* If the option has an argument, accept that. */
1250 if (argv[i][optlen] == '=')
1251 arg = argv[i] + optlen + 1;
1253 /* If this mapping requires extra text at end of name,
1254 accept that as "argument". */
1255 else if (strchr (arginfo, '*') != 0)
1256 arg = argv[i] + optlen;
1258 /* Otherwise, extra text at end means mismatch.
1259 Try other mappings. */
1260 else
1261 continue;
1264 else if (strchr (arginfo, '*') != 0)
1266 error ("incomplete '%s' option", option_map[j].name);
1267 break;
1270 /* Handle arguments. */
1271 if (strchr (arginfo, 'a') != 0)
1273 if (arg == 0)
1275 if (i + 1 == argc)
1277 error ("missing argument to '%s' option",
1278 option_map[j].name);
1279 break;
1282 arg = argv[++i];
1285 else if (strchr (arginfo, '*') != 0)
1287 else if (strchr (arginfo, 'o') == 0)
1289 if (arg != 0)
1290 error ("extraneous argument to '%s' option",
1291 option_map[j].name);
1292 arg = 0;
1295 /* Store the translation as one argv elt or as two. */
1296 if (arg != 0 && strchr (arginfo, 'j') != 0)
1297 newv[newindex++] = concat (option_map[j].equivalent, arg,
1298 NULL);
1299 else if (arg != 0)
1301 newv[newindex++] = option_map[j].equivalent;
1302 newv[newindex++] = arg;
1304 else
1305 newv[newindex++] = option_map[j].equivalent;
1307 break;
1310 i++;
1313 /* Handle old-fashioned options--just copy them through,
1314 with their arguments. */
1315 else if (argv[i][0] == '-')
1317 const char *p = argv[i] + 1;
1318 int c = *p;
1319 int nskip = 1;
1321 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
1322 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
1323 else if (WORD_SWITCH_TAKES_ARG (p))
1324 nskip += WORD_SWITCH_TAKES_ARG (p);
1325 else if ((c == 'B' || c == 'b' || c == 'x')
1326 && p[1] == 0)
1327 nskip += 1;
1328 else if (! strcmp (p, "Xlinker"))
1329 nskip += 1;
1330 else if (! strcmp (p, "Xpreprocessor"))
1331 nskip += 1;
1332 else if (! strcmp (p, "Xassembler"))
1333 nskip += 1;
1335 /* Watch out for an option at the end of the command line that
1336 is missing arguments, and avoid skipping past the end of the
1337 command line. */
1338 if (nskip + i > argc)
1339 nskip = argc - i;
1341 while (nskip > 0)
1343 newv[newindex++] = argv[i++];
1344 nskip--;
1347 else
1348 /* Ordinary operands, or +e options. */
1349 newv[newindex++] = argv[i++];
1352 newv[newindex] = 0;
1354 *argvp = newv;
1355 *argcp = newindex;
1358 static char *
1359 skip_whitespace (char *p)
1361 while (1)
1363 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1364 be considered whitespace. */
1365 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1366 return p + 1;
1367 else if (*p == '\n' || *p == ' ' || *p == '\t')
1368 p++;
1369 else if (*p == '#')
1371 while (*p != '\n')
1372 p++;
1373 p++;
1375 else
1376 break;
1379 return p;
1381 /* Structures to keep track of prefixes to try when looking for files. */
1383 struct prefix_list
1385 const char *prefix; /* String to prepend to the path. */
1386 struct prefix_list *next; /* Next in linked list. */
1387 int require_machine_suffix; /* Don't use without machine_suffix. */
1388 /* 2 means try both machine_suffix and just_machine_suffix. */
1389 int priority; /* Sort key - priority within list. */
1390 int os_multilib; /* 1 if OS multilib scheme should be used,
1391 0 for GCC multilib scheme. */
1394 struct path_prefix
1396 struct prefix_list *plist; /* List of prefixes to try */
1397 int max_len; /* Max length of a prefix in PLIST */
1398 const char *name; /* Name of this list (used in config stuff) */
1401 /* List of prefixes to try when looking for executables. */
1403 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1405 /* List of prefixes to try when looking for startup (crt0) files. */
1407 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1409 /* List of prefixes to try when looking for include files. */
1411 static struct path_prefix include_prefixes = { 0, 0, "include" };
1413 /* Suffix to attach to directories searched for commands.
1414 This looks like `MACHINE/VERSION/'. */
1416 static const char *machine_suffix = 0;
1418 /* Suffix to attach to directories searched for commands.
1419 This is just `MACHINE/'. */
1421 static const char *just_machine_suffix = 0;
1423 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1425 static const char *gcc_exec_prefix;
1427 /* Adjusted value of standard_libexec_prefix. */
1429 static const char *gcc_libexec_prefix;
1431 /* Default prefixes to attach to command names. */
1433 #ifndef STANDARD_STARTFILE_PREFIX_1
1434 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1435 #endif
1436 #ifndef STANDARD_STARTFILE_PREFIX_2
1437 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1438 #endif
1440 #ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */
1441 #undef MD_EXEC_PREFIX
1442 #undef MD_STARTFILE_PREFIX
1443 #undef MD_STARTFILE_PREFIX_1
1444 #endif
1446 /* If no prefixes defined, use the null string, which will disable them. */
1447 #ifndef MD_EXEC_PREFIX
1448 #define MD_EXEC_PREFIX ""
1449 #endif
1450 #ifndef MD_STARTFILE_PREFIX
1451 #define MD_STARTFILE_PREFIX ""
1452 #endif
1453 #ifndef MD_STARTFILE_PREFIX_1
1454 #define MD_STARTFILE_PREFIX_1 ""
1455 #endif
1457 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1458 static const char *const standard_exec_prefix_1 = "/usr/libexec/gcc/";
1459 static const char *const standard_exec_prefix_2 = "/usr/lib/gcc/";
1460 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1462 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1463 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1464 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1465 static const char *const standard_startfile_prefix_1
1466 = STANDARD_STARTFILE_PREFIX_1;
1467 static const char *const standard_startfile_prefix_2
1468 = STANDARD_STARTFILE_PREFIX_2;
1470 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1471 static const char *tooldir_prefix;
1473 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1475 static const char *standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1477 /* Subdirectory to use for locating libraries. Set by
1478 set_multilib_dir based on the compilation options. */
1480 static const char *multilib_dir;
1482 /* Subdirectory to use for locating libraries in OS conventions. Set by
1483 set_multilib_dir based on the compilation options. */
1485 static const char *multilib_os_dir;
1487 /* Structure to keep track of the specs that have been defined so far.
1488 These are accessed using %(specname) or %[specname] in a compiler
1489 or link spec. */
1491 struct spec_list
1493 /* The following 2 fields must be first */
1494 /* to allow EXTRA_SPECS to be initialized */
1495 const char *name; /* name of the spec. */
1496 const char *ptr; /* available ptr if no static pointer */
1498 /* The following fields are not initialized */
1499 /* by EXTRA_SPECS */
1500 const char **ptr_spec; /* pointer to the spec itself. */
1501 struct spec_list *next; /* Next spec in linked list. */
1502 int name_len; /* length of the name */
1503 int alloc_p; /* whether string was allocated */
1506 #define INIT_STATIC_SPEC(NAME,PTR) \
1507 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1509 /* List of statically defined specs. */
1510 static struct spec_list static_specs[] =
1512 INIT_STATIC_SPEC ("asm", &asm_spec),
1513 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1514 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1515 INIT_STATIC_SPEC ("asm_options", &asm_options),
1516 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1517 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1518 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1519 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1520 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1521 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1522 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1523 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1524 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1525 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1526 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1527 INIT_STATIC_SPEC ("link", &link_spec),
1528 INIT_STATIC_SPEC ("lib", &lib_spec),
1529 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec),
1530 INIT_STATIC_SPEC ("mflib", &mflib_spec),
1531 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1532 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1533 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces),
1534 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1535 INIT_STATIC_SPEC ("version", &compiler_version),
1536 INIT_STATIC_SPEC ("multilib", &multilib_select),
1537 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1538 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1539 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1540 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1541 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1542 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1543 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1544 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1545 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1546 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1547 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1548 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1549 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1552 #ifdef EXTRA_SPECS /* additional specs needed */
1553 /* Structure to keep track of just the first two args of a spec_list.
1554 That is all that the EXTRA_SPECS macro gives us. */
1555 struct spec_list_1
1557 const char *const name;
1558 const char *const ptr;
1561 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1562 static struct spec_list *extra_specs = (struct spec_list *) 0;
1563 #endif
1565 /* List of dynamically allocates specs that have been defined so far. */
1567 static struct spec_list *specs = (struct spec_list *) 0;
1569 /* List of static spec functions. */
1571 static const struct spec_function static_spec_functions[] =
1573 { "if-exists", if_exists_spec_function },
1574 { "if-exists-else", if_exists_else_spec_function },
1575 { "replace-outfile", replace_outfile_spec_function },
1576 { 0, 0 }
1579 static int processing_spec_function;
1581 /* Add appropriate libgcc specs to OBSTACK, taking into account
1582 various permutations of -shared-libgcc, -shared, and such. */
1584 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1586 #ifndef USE_LD_AS_NEEDED
1587 #define USE_LD_AS_NEEDED 0
1588 #endif
1590 static void
1591 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1592 const char *static_name, const char *eh_name)
1594 char *buf;
1596 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name,
1597 "}%{!static:%{!static-libgcc:",
1598 #if USE_LD_AS_NEEDED
1599 "%{!shared-libgcc:", static_name,
1600 " --as-needed ", shared_name, " --no-as-needed}"
1601 "%{shared-libgcc:", shared_name, "%{!shared: ", static_name,
1602 "}",
1603 #else
1604 "%{!shared:%{!shared-libgcc:", static_name, " ",
1605 eh_name, "}%{shared-libgcc:", shared_name, " ",
1606 static_name, "}}%{shared:",
1607 #ifdef LINK_EH_SPEC
1608 "%{shared-libgcc:", shared_name,
1609 "}%{!shared-libgcc:", static_name, "}",
1610 #else
1611 shared_name,
1612 #endif
1613 #endif
1614 "}}}", NULL);
1616 obstack_grow (obstack, buf, strlen (buf));
1617 free (buf);
1619 #endif /* ENABLE_SHARED_LIBGCC */
1621 /* Initialize the specs lookup routines. */
1623 static void
1624 init_spec (void)
1626 struct spec_list *next = (struct spec_list *) 0;
1627 struct spec_list *sl = (struct spec_list *) 0;
1628 int i;
1630 if (specs)
1631 return; /* Already initialized. */
1633 if (verbose_flag)
1634 notice ("Using built-in specs.\n");
1636 #ifdef EXTRA_SPECS
1637 extra_specs = xcalloc (sizeof (struct spec_list),
1638 ARRAY_SIZE (extra_specs_1));
1640 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1642 sl = &extra_specs[i];
1643 sl->name = extra_specs_1[i].name;
1644 sl->ptr = extra_specs_1[i].ptr;
1645 sl->next = next;
1646 sl->name_len = strlen (sl->name);
1647 sl->ptr_spec = &sl->ptr;
1648 next = sl;
1650 #endif
1652 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
1653 on ?: in file-scope variable initializations. */
1654 asm_debug = ASM_DEBUG_SPEC;
1656 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1658 sl = &static_specs[i];
1659 sl->next = next;
1660 next = sl;
1663 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1664 /* ??? If neither -shared-libgcc nor --static-libgcc was
1665 seen, then we should be making an educated guess. Some proposed
1666 heuristics for ELF include:
1668 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1669 program will be doing dynamic loading, which will likely
1670 need the shared libgcc.
1672 (2) If "-ldl", then it's also a fair bet that we're doing
1673 dynamic loading.
1675 (3) For each ET_DYN we're linking against (either through -lfoo
1676 or /some/path/foo.so), check to see whether it or one of
1677 its dependencies depends on a shared libgcc.
1679 (4) If "-shared"
1681 If the runtime is fixed to look for program headers instead
1682 of calling __register_frame_info at all, for each object,
1683 use the shared libgcc if any EH symbol referenced.
1685 If crtstuff is fixed to not invoke __register_frame_info
1686 automatically, for each object, use the shared libgcc if
1687 any non-empty unwind section found.
1689 Doing any of this probably requires invoking an external program to
1690 do the actual object file scanning. */
1692 const char *p = libgcc_spec;
1693 int in_sep = 1;
1695 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1696 when given the proper command line arguments. */
1697 while (*p)
1699 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1701 init_gcc_specs (&obstack,
1702 "-lgcc_s"
1703 #ifdef USE_LIBUNWIND_EXCEPTIONS
1704 " -lunwind"
1705 #endif
1707 "-lgcc",
1708 "-lgcc_eh"
1709 #ifdef USE_LIBUNWIND_EXCEPTIONS
1710 # ifdef HAVE_LD_STATIC_DYNAMIC
1711 " %{!static:-Bstatic} -lunwind %{!static:-Bdynamic}"
1712 # else
1713 " -lunwind"
1714 # endif
1715 #endif
1718 p += 5;
1719 in_sep = 0;
1721 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1723 /* Ug. We don't know shared library extensions. Hope that
1724 systems that use this form don't do shared libraries. */
1725 init_gcc_specs (&obstack,
1726 "-lgcc_s",
1727 "libgcc.a%s",
1728 "libgcc_eh.a%s"
1729 #ifdef USE_LIBUNWIND_EXCEPTIONS
1730 " -lunwind"
1731 #endif
1733 p += 10;
1734 in_sep = 0;
1736 else
1738 obstack_1grow (&obstack, *p);
1739 in_sep = (*p == ' ');
1740 p += 1;
1744 obstack_1grow (&obstack, '\0');
1745 libgcc_spec = obstack_finish (&obstack);
1747 #endif
1748 #ifdef USE_AS_TRADITIONAL_FORMAT
1749 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1751 static const char tf[] = "--traditional-format ";
1752 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1753 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1754 asm_spec = obstack_finish (&obstack);
1756 #endif
1757 #ifdef LINK_EH_SPEC
1758 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1759 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1760 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1761 link_spec = obstack_finish (&obstack);
1762 #endif
1764 specs = sl;
1767 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1768 removed; If the spec starts with a + then SPEC is added to the end of the
1769 current spec. */
1771 static void
1772 set_spec (const char *name, const char *spec)
1774 struct spec_list *sl;
1775 const char *old_spec;
1776 int name_len = strlen (name);
1777 int i;
1779 /* If this is the first call, initialize the statically allocated specs. */
1780 if (!specs)
1782 struct spec_list *next = (struct spec_list *) 0;
1783 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1785 sl = &static_specs[i];
1786 sl->next = next;
1787 next = sl;
1789 specs = sl;
1792 /* See if the spec already exists. */
1793 for (sl = specs; sl; sl = sl->next)
1794 if (name_len == sl->name_len && !strcmp (sl->name, name))
1795 break;
1797 if (!sl)
1799 /* Not found - make it. */
1800 sl = xmalloc (sizeof (struct spec_list));
1801 sl->name = xstrdup (name);
1802 sl->name_len = name_len;
1803 sl->ptr_spec = &sl->ptr;
1804 sl->alloc_p = 0;
1805 *(sl->ptr_spec) = "";
1806 sl->next = specs;
1807 specs = sl;
1810 old_spec = *(sl->ptr_spec);
1811 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1812 ? concat (old_spec, spec + 1, NULL)
1813 : xstrdup (spec));
1815 #ifdef DEBUG_SPECS
1816 if (verbose_flag)
1817 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1818 #endif
1820 /* Free the old spec. */
1821 if (old_spec && sl->alloc_p)
1822 free ((void *) old_spec);
1824 sl->alloc_p = 1;
1827 /* Accumulate a command (program name and args), and run it. */
1829 /* Vector of pointers to arguments in the current line of specifications. */
1831 static const char **argbuf;
1833 /* Number of elements allocated in argbuf. */
1835 static int argbuf_length;
1837 /* Number of elements in argbuf currently in use (containing args). */
1839 static int argbuf_index;
1841 /* Position in the argbuf array containing the name of the output file
1842 (the value associated with the "-o" flag). */
1844 static int have_o_argbuf_index = 0;
1846 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1847 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1848 it here. */
1850 static struct temp_name {
1851 const char *suffix; /* suffix associated with the code. */
1852 int length; /* strlen (suffix). */
1853 int unique; /* Indicates whether %g or %u/%U was used. */
1854 const char *filename; /* associated filename. */
1855 int filename_length; /* strlen (filename). */
1856 struct temp_name *next;
1857 } *temp_names;
1859 /* Number of commands executed so far. */
1861 static int execution_count;
1863 /* Number of commands that exited with a signal. */
1865 static int signal_count;
1867 /* Name with which this program was invoked. */
1869 static const char *programname;
1871 /* Allocate the argument vector. */
1873 static void
1874 alloc_args (void)
1876 argbuf_length = 10;
1877 argbuf = xmalloc (argbuf_length * sizeof (const char *));
1880 /* Clear out the vector of arguments (after a command is executed). */
1882 static void
1883 clear_args (void)
1885 argbuf_index = 0;
1888 /* Add one argument to the vector at the end.
1889 This is done when a space is seen or at the end of the line.
1890 If DELETE_ALWAYS is nonzero, the arg is a filename
1891 and the file should be deleted eventually.
1892 If DELETE_FAILURE is nonzero, the arg is a filename
1893 and the file should be deleted if this compilation fails. */
1895 static void
1896 store_arg (const char *arg, int delete_always, int delete_failure)
1898 if (argbuf_index + 1 == argbuf_length)
1899 argbuf = xrealloc (argbuf, (argbuf_length *= 2) * sizeof (const char *));
1901 argbuf[argbuf_index++] = arg;
1902 argbuf[argbuf_index] = 0;
1904 if (strcmp (arg, "-o") == 0)
1905 have_o_argbuf_index = argbuf_index;
1906 if (delete_always || delete_failure)
1907 record_temp_file (arg, delete_always, delete_failure);
1910 /* Load specs from a file name named FILENAME, replacing occurrences of
1911 various different types of line-endings, \r\n, \n\r and just \r, with
1912 a single \n. */
1914 static char *
1915 load_specs (const char *filename)
1917 int desc;
1918 int readlen;
1919 struct stat statbuf;
1920 char *buffer;
1921 char *buffer_p;
1922 char *specs;
1923 char *specs_p;
1925 if (verbose_flag)
1926 notice ("Reading specs from %s\n", filename);
1928 /* Open and stat the file. */
1929 desc = open (filename, O_RDONLY, 0);
1930 if (desc < 0)
1931 pfatal_with_name (filename);
1932 if (stat (filename, &statbuf) < 0)
1933 pfatal_with_name (filename);
1935 /* Read contents of file into BUFFER. */
1936 buffer = xmalloc ((unsigned) statbuf.st_size + 1);
1937 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1938 if (readlen < 0)
1939 pfatal_with_name (filename);
1940 buffer[readlen] = 0;
1941 close (desc);
1943 specs = xmalloc (readlen + 1);
1944 specs_p = specs;
1945 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1947 int skip = 0;
1948 char c = *buffer_p;
1949 if (c == '\r')
1951 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1952 skip = 1;
1953 else if (*(buffer_p + 1) == '\n') /* \r\n */
1954 skip = 1;
1955 else /* \r */
1956 c = '\n';
1958 if (! skip)
1959 *specs_p++ = c;
1961 *specs_p = '\0';
1963 free (buffer);
1964 return (specs);
1967 /* Read compilation specs from a file named FILENAME,
1968 replacing the default ones.
1970 A suffix which starts with `*' is a definition for
1971 one of the machine-specific sub-specs. The "suffix" should be
1972 *asm, *cc1, *cpp, *link, *startfile, etc.
1973 The corresponding spec is stored in asm_spec, etc.,
1974 rather than in the `compilers' vector.
1976 Anything invalid in the file is a fatal error. */
1978 static void
1979 read_specs (const char *filename, int main_p)
1981 char *buffer;
1982 char *p;
1984 buffer = load_specs (filename);
1986 /* Scan BUFFER for specs, putting them in the vector. */
1987 p = buffer;
1988 while (1)
1990 char *suffix;
1991 char *spec;
1992 char *in, *out, *p1, *p2, *p3;
1994 /* Advance P in BUFFER to the next nonblank nocomment line. */
1995 p = skip_whitespace (p);
1996 if (*p == 0)
1997 break;
1999 /* Is this a special command that starts with '%'? */
2000 /* Don't allow this for the main specs file, since it would
2001 encourage people to overwrite it. */
2002 if (*p == '%' && !main_p)
2004 p1 = p;
2005 while (*p && *p != '\n')
2006 p++;
2008 /* Skip '\n'. */
2009 p++;
2011 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
2012 && (p1[sizeof "%include" - 1] == ' '
2013 || p1[sizeof "%include" - 1] == '\t'))
2015 char *new_filename;
2017 p1 += sizeof ("%include");
2018 while (*p1 == ' ' || *p1 == '\t')
2019 p1++;
2021 if (*p1++ != '<' || p[-2] != '>')
2022 fatal ("specs %%include syntax malformed after %ld characters",
2023 (long) (p1 - buffer + 1));
2025 p[-2] = '\0';
2026 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, 0);
2027 read_specs (new_filename ? new_filename : p1, FALSE);
2028 continue;
2030 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
2031 && (p1[sizeof "%include_noerr" - 1] == ' '
2032 || p1[sizeof "%include_noerr" - 1] == '\t'))
2034 char *new_filename;
2036 p1 += sizeof "%include_noerr";
2037 while (*p1 == ' ' || *p1 == '\t')
2038 p1++;
2040 if (*p1++ != '<' || p[-2] != '>')
2041 fatal ("specs %%include syntax malformed after %ld characters",
2042 (long) (p1 - buffer + 1));
2044 p[-2] = '\0';
2045 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, 0);
2046 if (new_filename)
2047 read_specs (new_filename, FALSE);
2048 else if (verbose_flag)
2049 notice ("could not find specs file %s\n", p1);
2050 continue;
2052 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
2053 && (p1[sizeof "%rename" - 1] == ' '
2054 || p1[sizeof "%rename" - 1] == '\t'))
2056 int name_len;
2057 struct spec_list *sl;
2058 struct spec_list *newsl;
2060 /* Get original name. */
2061 p1 += sizeof "%rename";
2062 while (*p1 == ' ' || *p1 == '\t')
2063 p1++;
2065 if (! ISALPHA ((unsigned char) *p1))
2066 fatal ("specs %%rename syntax malformed after %ld characters",
2067 (long) (p1 - buffer));
2069 p2 = p1;
2070 while (*p2 && !ISSPACE ((unsigned char) *p2))
2071 p2++;
2073 if (*p2 != ' ' && *p2 != '\t')
2074 fatal ("specs %%rename syntax malformed after %ld characters",
2075 (long) (p2 - buffer));
2077 name_len = p2 - p1;
2078 *p2++ = '\0';
2079 while (*p2 == ' ' || *p2 == '\t')
2080 p2++;
2082 if (! ISALPHA ((unsigned char) *p2))
2083 fatal ("specs %%rename syntax malformed after %ld characters",
2084 (long) (p2 - buffer));
2086 /* Get new spec name. */
2087 p3 = p2;
2088 while (*p3 && !ISSPACE ((unsigned char) *p3))
2089 p3++;
2091 if (p3 != p - 1)
2092 fatal ("specs %%rename syntax malformed after %ld characters",
2093 (long) (p3 - buffer));
2094 *p3 = '\0';
2096 for (sl = specs; sl; sl = sl->next)
2097 if (name_len == sl->name_len && !strcmp (sl->name, p1))
2098 break;
2100 if (!sl)
2101 fatal ("specs %s spec was not found to be renamed", p1);
2103 if (strcmp (p1, p2) == 0)
2104 continue;
2106 for (newsl = specs; newsl; newsl = newsl->next)
2107 if (strcmp (newsl->name, p2) == 0)
2108 fatal ("%s: attempt to rename spec '%s' to already defined spec '%s'",
2109 filename, p1, p2);
2111 if (verbose_flag)
2113 notice ("rename spec %s to %s\n", p1, p2);
2114 #ifdef DEBUG_SPECS
2115 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
2116 #endif
2119 set_spec (p2, *(sl->ptr_spec));
2120 if (sl->alloc_p)
2121 free ((void *) *(sl->ptr_spec));
2123 *(sl->ptr_spec) = "";
2124 sl->alloc_p = 0;
2125 continue;
2127 else
2128 fatal ("specs unknown %% command after %ld characters",
2129 (long) (p1 - buffer));
2132 /* Find the colon that should end the suffix. */
2133 p1 = p;
2134 while (*p1 && *p1 != ':' && *p1 != '\n')
2135 p1++;
2137 /* The colon shouldn't be missing. */
2138 if (*p1 != ':')
2139 fatal ("specs file malformed after %ld characters",
2140 (long) (p1 - buffer));
2142 /* Skip back over trailing whitespace. */
2143 p2 = p1;
2144 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
2145 p2--;
2147 /* Copy the suffix to a string. */
2148 suffix = save_string (p, p2 - p);
2149 /* Find the next line. */
2150 p = skip_whitespace (p1 + 1);
2151 if (p[1] == 0)
2152 fatal ("specs file malformed after %ld characters",
2153 (long) (p - buffer));
2155 p1 = p;
2156 /* Find next blank line or end of string. */
2157 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
2158 p1++;
2160 /* Specs end at the blank line and do not include the newline. */
2161 spec = save_string (p, p1 - p);
2162 p = p1;
2164 /* Delete backslash-newline sequences from the spec. */
2165 in = spec;
2166 out = spec;
2167 while (*in != 0)
2169 if (in[0] == '\\' && in[1] == '\n')
2170 in += 2;
2171 else if (in[0] == '#')
2172 while (*in && *in != '\n')
2173 in++;
2175 else
2176 *out++ = *in++;
2178 *out = 0;
2180 if (suffix[0] == '*')
2182 if (! strcmp (suffix, "*link_command"))
2183 link_command_spec = spec;
2184 else
2185 set_spec (suffix + 1, spec);
2187 else
2189 /* Add this pair to the vector. */
2190 compilers
2191 = xrealloc (compilers,
2192 (n_compilers + 2) * sizeof (struct compiler));
2194 compilers[n_compilers].suffix = suffix;
2195 compilers[n_compilers].spec = spec;
2196 n_compilers++;
2197 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2200 if (*suffix == 0)
2201 link_command_spec = spec;
2204 if (link_command_spec == 0)
2205 fatal ("spec file has no spec for linking");
2208 /* Record the names of temporary files we tell compilers to write,
2209 and delete them at the end of the run. */
2211 /* This is the common prefix we use to make temp file names.
2212 It is chosen once for each run of this program.
2213 It is substituted into a spec by %g or %j.
2214 Thus, all temp file names contain this prefix.
2215 In practice, all temp file names start with this prefix.
2217 This prefix comes from the envvar TMPDIR if it is defined;
2218 otherwise, from the P_tmpdir macro if that is defined;
2219 otherwise, in /usr/tmp or /tmp;
2220 or finally the current directory if all else fails. */
2222 static const char *temp_filename;
2224 /* Length of the prefix. */
2226 static int temp_filename_length;
2228 /* Define the list of temporary files to delete. */
2230 struct temp_file
2232 const char *name;
2233 struct temp_file *next;
2236 /* Queue of files to delete on success or failure of compilation. */
2237 static struct temp_file *always_delete_queue;
2238 /* Queue of files to delete on failure of compilation. */
2239 static struct temp_file *failure_delete_queue;
2241 /* Record FILENAME as a file to be deleted automatically.
2242 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2243 otherwise delete it in any case.
2244 FAIL_DELETE nonzero means delete it if a compilation step fails;
2245 otherwise delete it in any case. */
2247 void
2248 record_temp_file (const char *filename, int always_delete, int fail_delete)
2250 char *const name = xstrdup (filename);
2252 if (always_delete)
2254 struct temp_file *temp;
2255 for (temp = always_delete_queue; temp; temp = temp->next)
2256 if (! strcmp (name, temp->name))
2257 goto already1;
2259 temp = xmalloc (sizeof (struct temp_file));
2260 temp->next = always_delete_queue;
2261 temp->name = name;
2262 always_delete_queue = temp;
2264 already1:;
2267 if (fail_delete)
2269 struct temp_file *temp;
2270 for (temp = failure_delete_queue; temp; temp = temp->next)
2271 if (! strcmp (name, temp->name))
2272 goto already2;
2274 temp = xmalloc (sizeof (struct temp_file));
2275 temp->next = failure_delete_queue;
2276 temp->name = name;
2277 failure_delete_queue = temp;
2279 already2:;
2283 /* Delete all the temporary files whose names we previously recorded. */
2285 #ifndef DELETE_IF_ORDINARY
2286 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2287 do \
2289 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2290 if (unlink (NAME) < 0) \
2291 if (VERBOSE_FLAG) \
2292 perror_with_name (NAME); \
2293 } while (0)
2294 #endif
2296 static void
2297 delete_if_ordinary (const char *name)
2299 struct stat st;
2300 #ifdef DEBUG
2301 int i, c;
2303 printf ("Delete %s? (y or n) ", name);
2304 fflush (stdout);
2305 i = getchar ();
2306 if (i != '\n')
2307 while ((c = getchar ()) != '\n' && c != EOF)
2310 if (i == 'y' || i == 'Y')
2311 #endif /* DEBUG */
2312 DELETE_IF_ORDINARY (name, st, verbose_flag);
2315 static void
2316 delete_temp_files (void)
2318 struct temp_file *temp;
2320 for (temp = always_delete_queue; temp; temp = temp->next)
2321 delete_if_ordinary (temp->name);
2322 always_delete_queue = 0;
2325 /* Delete all the files to be deleted on error. */
2327 static void
2328 delete_failure_queue (void)
2330 struct temp_file *temp;
2332 for (temp = failure_delete_queue; temp; temp = temp->next)
2333 delete_if_ordinary (temp->name);
2336 static void
2337 clear_failure_queue (void)
2339 failure_delete_queue = 0;
2342 /* Build a list of search directories from PATHS.
2343 PREFIX is a string to prepend to the list.
2344 If CHECK_DIR_P is nonzero we ensure the directory exists.
2345 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2346 It is also used by the --print-search-dirs flag. */
2348 static char *
2349 build_search_list (struct path_prefix *paths, const char *prefix,
2350 int check_dir_p)
2352 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0;
2353 int just_suffix_len
2354 = (just_machine_suffix) ? strlen (just_machine_suffix) : 0;
2355 int first_time = TRUE;
2356 struct prefix_list *pprefix;
2358 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2359 obstack_1grow (&collect_obstack, '=');
2361 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next)
2363 int len = strlen (pprefix->prefix);
2365 if (machine_suffix
2366 && (! check_dir_p
2367 || is_directory (pprefix->prefix, machine_suffix, 0)))
2369 if (!first_time)
2370 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2372 first_time = FALSE;
2373 obstack_grow (&collect_obstack, pprefix->prefix, len);
2374 obstack_grow (&collect_obstack, machine_suffix, suffix_len);
2377 if (just_machine_suffix
2378 && pprefix->require_machine_suffix == 2
2379 && (! check_dir_p
2380 || is_directory (pprefix->prefix, just_machine_suffix, 0)))
2382 if (! first_time)
2383 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2385 first_time = FALSE;
2386 obstack_grow (&collect_obstack, pprefix->prefix, len);
2387 obstack_grow (&collect_obstack, just_machine_suffix,
2388 just_suffix_len);
2391 if (! pprefix->require_machine_suffix)
2393 if (! first_time)
2394 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2396 first_time = FALSE;
2397 obstack_grow (&collect_obstack, pprefix->prefix, len);
2401 obstack_1grow (&collect_obstack, '\0');
2402 return obstack_finish (&collect_obstack);
2405 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2406 for collect. */
2408 static void
2409 putenv_from_prefixes (struct path_prefix *paths, const char *env_var)
2411 putenv (build_search_list (paths, env_var, 1));
2414 /* Check whether NAME can be accessed in MODE. This is like access,
2415 except that it never considers directories to be executable. */
2417 static int
2418 access_check (const char *name, int mode)
2420 if (mode == X_OK)
2422 struct stat st;
2424 if (stat (name, &st) < 0
2425 || S_ISDIR (st.st_mode))
2426 return -1;
2429 return access (name, mode);
2432 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2433 access to check permissions.
2434 Return 0 if not found, otherwise return its name, allocated with malloc. */
2436 static char *
2437 find_a_file (struct path_prefix *pprefix, const char *name, int mode,
2438 int multilib)
2440 char *temp;
2441 const char *const file_suffix =
2442 ((mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "");
2443 struct prefix_list *pl;
2444 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1;
2445 const char *multilib_name, *multilib_os_name;
2447 #ifdef DEFAULT_ASSEMBLER
2448 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2449 return xstrdup (DEFAULT_ASSEMBLER);
2450 #endif
2452 #ifdef DEFAULT_LINKER
2453 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2454 return xstrdup (DEFAULT_LINKER);
2455 #endif
2457 if (machine_suffix)
2458 len += strlen (machine_suffix);
2460 multilib_name = name;
2461 multilib_os_name = name;
2462 if (multilib && multilib_os_dir)
2464 int len1 = multilib_dir ? strlen (multilib_dir) + 1 : 0;
2465 int len2 = strlen (multilib_os_dir) + 1;
2467 len += len1 > len2 ? len1 : len2;
2468 if (multilib_dir)
2469 multilib_name = ACONCAT ((multilib_dir, dir_separator_str, name,
2470 NULL));
2471 if (strcmp (multilib_os_dir, ".") != 0)
2472 multilib_os_name = ACONCAT ((multilib_os_dir, dir_separator_str, name,
2473 NULL));
2476 temp = xmalloc (len);
2478 /* Determine the filename to execute (special case for absolute paths). */
2480 if (IS_ABSOLUTE_PATH (name))
2482 if (access (name, mode) == 0)
2484 strcpy (temp, name);
2485 return temp;
2488 else
2489 for (pl = pprefix->plist; pl; pl = pl->next)
2491 const char *this_name
2492 = pl->os_multilib ? multilib_os_name : multilib_name;
2494 if (machine_suffix)
2496 /* Some systems have a suffix for executable files.
2497 So try appending that first. */
2498 if (file_suffix[0] != 0)
2500 strcpy (temp, pl->prefix);
2501 strcat (temp, machine_suffix);
2502 strcat (temp, multilib_name);
2503 strcat (temp, file_suffix);
2504 if (access_check (temp, mode) == 0)
2505 return temp;
2508 /* Now try just the multilib_name. */
2509 strcpy (temp, pl->prefix);
2510 strcat (temp, machine_suffix);
2511 strcat (temp, multilib_name);
2512 if (access_check (temp, mode) == 0)
2513 return temp;
2516 /* Certain prefixes are tried with just the machine type,
2517 not the version. This is used for finding as, ld, etc. */
2518 if (just_machine_suffix && pl->require_machine_suffix == 2)
2520 /* Some systems have a suffix for executable files.
2521 So try appending that first. */
2522 if (file_suffix[0] != 0)
2524 strcpy (temp, pl->prefix);
2525 strcat (temp, just_machine_suffix);
2526 strcat (temp, multilib_name);
2527 strcat (temp, file_suffix);
2528 if (access_check (temp, mode) == 0)
2529 return temp;
2532 strcpy (temp, pl->prefix);
2533 strcat (temp, just_machine_suffix);
2534 strcat (temp, multilib_name);
2535 if (access_check (temp, mode) == 0)
2536 return temp;
2539 /* Certain prefixes can't be used without the machine suffix
2540 when the machine or version is explicitly specified. */
2541 if (! pl->require_machine_suffix)
2543 /* Some systems have a suffix for executable files.
2544 So try appending that first. */
2545 if (file_suffix[0] != 0)
2547 strcpy (temp, pl->prefix);
2548 strcat (temp, this_name);
2549 strcat (temp, file_suffix);
2550 if (access_check (temp, mode) == 0)
2551 return temp;
2554 strcpy (temp, pl->prefix);
2555 strcat (temp, this_name);
2556 if (access_check (temp, mode) == 0)
2557 return temp;
2561 free (temp);
2562 return 0;
2565 /* Ranking of prefixes in the sort list. -B prefixes are put before
2566 all others. */
2568 enum path_prefix_priority
2570 PREFIX_PRIORITY_B_OPT,
2571 PREFIX_PRIORITY_LAST
2574 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2575 order according to PRIORITY. Within each PRIORITY, new entries are
2576 appended.
2578 If WARN is nonzero, we will warn if no file is found
2579 through this prefix. WARN should point to an int
2580 which will be set to 1 if this entry is used.
2582 COMPONENT is the value to be passed to update_path.
2584 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2585 the complete value of machine_suffix.
2586 2 means try both machine_suffix and just_machine_suffix. */
2588 static void
2589 add_prefix (struct path_prefix *pprefix, const char *prefix,
2590 const char *component, /* enum prefix_priority */ int priority,
2591 int require_machine_suffix, int os_multilib)
2593 struct prefix_list *pl, **prev;
2594 int len;
2596 for (prev = &pprefix->plist;
2597 (*prev) != NULL && (*prev)->priority <= priority;
2598 prev = &(*prev)->next)
2601 /* Keep track of the longest prefix. */
2603 prefix = update_path (prefix, component);
2604 len = strlen (prefix);
2605 if (len > pprefix->max_len)
2606 pprefix->max_len = len;
2608 pl = xmalloc (sizeof (struct prefix_list));
2609 pl->prefix = prefix;
2610 pl->require_machine_suffix = require_machine_suffix;
2611 pl->priority = priority;
2612 pl->os_multilib = os_multilib;
2614 /* Insert after PREV. */
2615 pl->next = (*prev);
2616 (*prev) = pl;
2619 /* Same as add_prefix, but prepending target_system_root to prefix. */
2620 static void
2621 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2622 const char *component,
2623 /* enum prefix_priority */ int priority,
2624 int require_machine_suffix, int os_multilib)
2626 if (!IS_ABSOLUTE_PATH (prefix))
2627 fatal ("system path '%s' is not absolute", prefix);
2629 if (target_system_root)
2631 if (target_sysroot_suffix)
2632 prefix = concat (target_sysroot_suffix, prefix, NULL);
2633 prefix = concat (target_system_root, prefix, NULL);
2635 /* We have to override this because GCC's notion of sysroot
2636 moves along with GCC. */
2637 component = "GCC";
2640 add_prefix (pprefix, prefix, component, priority,
2641 require_machine_suffix, os_multilib);
2644 /* Execute the command specified by the arguments on the current line of spec.
2645 When using pipes, this includes several piped-together commands
2646 with `|' between them.
2648 Return 0 if successful, -1 if failed. */
2650 static int
2651 execute (void)
2653 int i;
2654 int n_commands; /* # of command. */
2655 char *string;
2656 struct command
2658 const char *prog; /* program name. */
2659 const char **argv; /* vector of args. */
2660 int pid; /* pid of process for this command. */
2663 struct command *commands; /* each command buffer with above info. */
2665 gcc_assert (!processing_spec_function);
2667 /* Count # of piped commands. */
2668 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2669 if (strcmp (argbuf[i], "|") == 0)
2670 n_commands++;
2672 /* Get storage for each command. */
2673 commands = alloca (n_commands * sizeof (struct command));
2675 /* Split argbuf into its separate piped processes,
2676 and record info about each one.
2677 Also search for the programs that are to be run. */
2679 commands[0].prog = argbuf[0]; /* first command. */
2680 commands[0].argv = &argbuf[0];
2681 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, 0);
2683 if (string)
2684 commands[0].argv[0] = string;
2686 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2687 if (strcmp (argbuf[i], "|") == 0)
2688 { /* each command. */
2689 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2690 fatal ("-pipe not supported");
2691 #endif
2692 argbuf[i] = 0; /* termination of command args. */
2693 commands[n_commands].prog = argbuf[i + 1];
2694 commands[n_commands].argv = &argbuf[i + 1];
2695 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2696 X_OK, 0);
2697 if (string)
2698 commands[n_commands].argv[0] = string;
2699 n_commands++;
2702 argbuf[argbuf_index] = 0;
2704 /* If -v, print what we are about to do, and maybe query. */
2706 if (verbose_flag)
2708 /* For help listings, put a blank line between sub-processes. */
2709 if (print_help_list)
2710 fputc ('\n', stderr);
2712 /* Print each piped command as a separate line. */
2713 for (i = 0; i < n_commands; i++)
2715 const char *const *j;
2717 if (verbose_only_flag)
2719 for (j = commands[i].argv; *j; j++)
2721 const char *p;
2722 fprintf (stderr, " \"");
2723 for (p = *j; *p; ++p)
2725 if (*p == '"' || *p == '\\' || *p == '$')
2726 fputc ('\\', stderr);
2727 fputc (*p, stderr);
2729 fputc ('"', stderr);
2732 else
2733 for (j = commands[i].argv; *j; j++)
2734 fprintf (stderr, " %s", *j);
2736 /* Print a pipe symbol after all but the last command. */
2737 if (i + 1 != n_commands)
2738 fprintf (stderr, " |");
2739 fprintf (stderr, "\n");
2741 fflush (stderr);
2742 if (verbose_only_flag != 0)
2744 /* verbose_only_flag should act as if the spec was
2745 executed, so increment execution_count before
2746 returning. This prevents spurious warnings about
2747 unused linker input files, etc. */
2748 execution_count++;
2749 return 0;
2751 #ifdef DEBUG
2752 notice ("\nGo ahead? (y or n) ");
2753 fflush (stderr);
2754 i = getchar ();
2755 if (i != '\n')
2756 while (getchar () != '\n')
2759 if (i != 'y' && i != 'Y')
2760 return 0;
2761 #endif /* DEBUG */
2764 #ifdef ENABLE_VALGRIND_CHECKING
2765 /* Run the each command through valgrind. To simplify prepending the
2766 path to valgrind and the option "-q" (for quiet operation unless
2767 something triggers), we allocate a separate argv array. */
2769 for (i = 0; i < n_commands; i++)
2771 const char **argv;
2772 int argc;
2773 int j;
2775 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2778 argv = alloca ((argc + 3) * sizeof (char *));
2780 argv[0] = VALGRIND_PATH;
2781 argv[1] = "-q";
2782 for (j = 2; j < argc + 2; j++)
2783 argv[j] = commands[i].argv[j - 2];
2784 argv[j] = NULL;
2786 commands[i].argv = argv;
2787 commands[i].prog = argv[0];
2789 #endif
2791 /* Run each piped subprocess. */
2793 for (i = 0; i < n_commands; i++)
2795 char *errmsg_fmt, *errmsg_arg;
2796 const char *string = commands[i].argv[0];
2798 /* For some bizarre reason, the second argument of execvp() is
2799 char *const *, not const char *const *. */
2800 commands[i].pid = pexecute (string, (char *const *) commands[i].argv,
2801 programname, temp_filename,
2802 &errmsg_fmt, &errmsg_arg,
2803 ((i == 0 ? PEXECUTE_FIRST : 0)
2804 | (i + 1 == n_commands ? PEXECUTE_LAST : 0)
2805 | (string == commands[i].prog
2806 ? PEXECUTE_SEARCH : 0)
2807 | (verbose_flag ? PEXECUTE_VERBOSE : 0)));
2809 if (commands[i].pid == -1)
2810 pfatal_pexecute (errmsg_fmt, errmsg_arg);
2812 if (string != commands[i].prog)
2813 free ((void *) string);
2816 execution_count++;
2818 /* Wait for all the subprocesses to finish.
2819 We don't care what order they finish in;
2820 we know that N_COMMANDS waits will get them all.
2821 Ignore subprocesses that we don't know about,
2822 since they can be spawned by the process that exec'ed us. */
2825 int ret_code = 0;
2826 #ifdef HAVE_GETRUSAGE
2827 struct timeval d;
2828 double ut = 0.0, st = 0.0;
2829 #endif
2831 for (i = 0; i < n_commands;)
2833 int j;
2834 int status;
2835 int pid;
2837 pid = pwait (commands[i].pid, &status, 0);
2838 gcc_assert (pid >= 0);
2840 #ifdef HAVE_GETRUSAGE
2841 if (report_times)
2843 /* getrusage returns the total resource usage of all children
2844 up to now. Copy the previous values into prus, get the
2845 current statistics, then take the difference. */
2847 prus = rus;
2848 getrusage (RUSAGE_CHILDREN, &rus);
2849 d.tv_sec = rus.ru_utime.tv_sec - prus.ru_utime.tv_sec;
2850 d.tv_usec = rus.ru_utime.tv_usec - prus.ru_utime.tv_usec;
2851 ut = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2853 d.tv_sec = rus.ru_stime.tv_sec - prus.ru_stime.tv_sec;
2854 d.tv_usec = rus.ru_stime.tv_usec - prus.ru_stime.tv_usec;
2855 st = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2857 #endif
2859 for (j = 0; j < n_commands; j++)
2860 if (commands[j].pid == pid)
2862 i++;
2863 if (WIFSIGNALED (status))
2865 #ifdef SIGPIPE
2866 /* SIGPIPE is a special case. It happens in -pipe mode
2867 when the compiler dies before the preprocessor is
2868 done, or the assembler dies before the compiler is
2869 done. There's generally been an error already, and
2870 this is just fallout. So don't generate another error
2871 unless we would otherwise have succeeded. */
2872 if (WTERMSIG (status) == SIGPIPE
2873 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2875 else
2876 #endif
2877 fatal ("\
2878 Internal error: %s (program %s)\n\
2879 Please submit a full bug report.\n\
2880 See %s for instructions.",
2881 strsignal (WTERMSIG (status)), commands[j].prog,
2882 bug_report_url);
2883 signal_count++;
2884 ret_code = -1;
2886 else if (WIFEXITED (status)
2887 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2889 if (WEXITSTATUS (status) > greatest_status)
2890 greatest_status = WEXITSTATUS (status);
2891 ret_code = -1;
2893 #ifdef HAVE_GETRUSAGE
2894 if (report_times && ut + st != 0)
2895 notice ("# %s %.2f %.2f\n", commands[j].prog, ut, st);
2896 #endif
2897 break;
2900 return ret_code;
2904 /* Find all the switches given to us
2905 and make a vector describing them.
2906 The elements of the vector are strings, one per switch given.
2907 If a switch uses following arguments, then the `part1' field
2908 is the switch itself and the `args' field
2909 is a null-terminated vector containing the following arguments.
2910 The `live_cond' field is:
2911 0 when initialized
2912 1 if the switch is true in a conditional spec,
2913 -1 if false (overridden by a later switch)
2914 -2 if this switch should be ignored (used in %<S)
2915 The `validated' field is nonzero if any spec has looked at this switch;
2916 if it remains zero at the end of the run, it must be meaningless. */
2918 #define SWITCH_OK 0
2919 #define SWITCH_FALSE -1
2920 #define SWITCH_IGNORE -2
2921 #define SWITCH_LIVE 1
2923 struct switchstr
2925 const char *part1;
2926 const char **args;
2927 int live_cond;
2928 unsigned char validated;
2929 unsigned char ordering;
2932 static struct switchstr *switches;
2934 static int n_switches;
2936 struct infile
2938 const char *name;
2939 const char *language;
2940 struct compiler *incompiler;
2941 bool compiled;
2942 bool preprocessed;
2945 /* Also a vector of input files specified. */
2947 static struct infile *infiles;
2949 int n_infiles;
2951 /* True if multiple input files are being compiled to a single
2952 assembly file. */
2954 static bool combine_inputs;
2956 /* This counts the number of libraries added by lang_specific_driver, so that
2957 we can tell if there were any user supplied any files or libraries. */
2959 static int added_libraries;
2961 /* And a vector of corresponding output files is made up later. */
2963 const char **outfiles;
2965 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2967 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2968 is true if we should look for an executable suffix. DO_OBJ
2969 is true if we should look for an object suffix. */
2971 static const char *
2972 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
2973 int do_obj ATTRIBUTE_UNUSED)
2975 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2976 int i;
2977 #endif
2978 int len;
2980 if (name == NULL)
2981 return NULL;
2983 len = strlen (name);
2985 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2986 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2987 if (do_obj && len > 2
2988 && name[len - 2] == '.'
2989 && name[len - 1] == 'o')
2991 obstack_grow (&obstack, name, len - 2);
2992 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2993 name = obstack_finish (&obstack);
2995 #endif
2997 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2998 /* If there is no filetype, make it the executable suffix (which includes
2999 the "."). But don't get confused if we have just "-o". */
3000 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
3001 return name;
3003 for (i = len - 1; i >= 0; i--)
3004 if (IS_DIR_SEPARATOR (name[i]))
3005 break;
3007 for (i++; i < len; i++)
3008 if (name[i] == '.')
3009 return name;
3011 obstack_grow (&obstack, name, len);
3012 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
3013 strlen (TARGET_EXECUTABLE_SUFFIX));
3014 name = obstack_finish (&obstack);
3015 #endif
3017 return name;
3019 #endif
3021 /* Display the command line switches accepted by gcc. */
3022 static void
3023 display_help (void)
3025 printf (_("Usage: %s [options] file...\n"), programname);
3026 fputs (_("Options:\n"), stdout);
3028 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
3029 fputs (_(" --help Display this information\n"), stdout);
3030 fputs (_(" --target-help Display target specific command line options\n"), stdout);
3031 if (! verbose_flag)
3032 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
3033 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
3034 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
3035 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
3036 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
3037 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
3038 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
3039 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
3040 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
3041 fputs (_("\
3042 -print-multi-lib Display the mapping between command line options and\n\
3043 multiple library search directories\n"), stdout);
3044 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
3045 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3046 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3047 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3048 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
3049 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
3050 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3051 fputs (_(" -combine Pass multiple source files to compiler at once\n"), stdout);
3052 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3053 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3054 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3055 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3056 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3057 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3058 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
3059 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
3060 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3061 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3062 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3063 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3064 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3065 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3066 fputs (_("\
3067 -x <language> Specify the language of the following input files\n\
3068 Permissible languages include: c c++ assembler none\n\
3069 'none' means revert to the default behavior of\n\
3070 guessing the language based on the file's extension\n\
3071 "), stdout);
3073 printf (_("\
3074 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3075 passed on to the various sub-processes invoked by %s. In order to pass\n\
3076 other options on to these processes the -W<letter> options must be used.\n\
3077 "), programname);
3079 /* The rest of the options are displayed by invocations of the various
3080 sub-processes. */
3083 static void
3084 add_preprocessor_option (const char *option, int len)
3086 n_preprocessor_options++;
3088 if (! preprocessor_options)
3089 preprocessor_options = xmalloc (n_preprocessor_options * sizeof (char *));
3090 else
3091 preprocessor_options = xrealloc (preprocessor_options,
3092 n_preprocessor_options * sizeof (char *));
3094 preprocessor_options [n_preprocessor_options - 1] =
3095 save_string (option, len);
3098 static void
3099 add_assembler_option (const char *option, int len)
3101 n_assembler_options++;
3103 if (! assembler_options)
3104 assembler_options = xmalloc (n_assembler_options * sizeof (char *));
3105 else
3106 assembler_options = xrealloc (assembler_options,
3107 n_assembler_options * sizeof (char *));
3109 assembler_options [n_assembler_options - 1] = save_string (option, len);
3112 static void
3113 add_linker_option (const char *option, int len)
3115 n_linker_options++;
3117 if (! linker_options)
3118 linker_options = xmalloc (n_linker_options * sizeof (char *));
3119 else
3120 linker_options = xrealloc (linker_options,
3121 n_linker_options * sizeof (char *));
3123 linker_options [n_linker_options - 1] = save_string (option, len);
3126 /* Create the vector `switches' and its contents.
3127 Store its length in `n_switches'. */
3129 static void
3130 process_command (int argc, const char **argv)
3132 int i;
3133 const char *temp;
3134 char *temp1;
3135 const char *spec_lang = 0;
3136 int last_language_n_infiles;
3137 int have_c = 0;
3138 int lang_n_infiles = 0;
3139 #ifdef MODIFY_TARGET_NAME
3140 int is_modify_target_name;
3141 int j;
3142 #endif
3144 GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3146 n_switches = 0;
3147 n_infiles = 0;
3148 added_libraries = 0;
3150 /* Figure compiler version from version string. */
3152 compiler_version = temp1 = xstrdup (version_string);
3154 for (; *temp1; ++temp1)
3156 if (*temp1 == ' ')
3158 *temp1 = '\0';
3159 break;
3163 /* If there is a -V or -b option (or both), process it now, before
3164 trying to interpret the rest of the command line. */
3165 if (argc > 1 && argv[1][0] == '-'
3166 && (argv[1][1] == 'V' || argv[1][1] == 'b'))
3168 const char *new_version = DEFAULT_TARGET_VERSION;
3169 const char *new_machine = DEFAULT_TARGET_MACHINE;
3170 const char *progname = argv[0];
3171 char **new_argv;
3172 char *new_argv0;
3173 int baselen;
3175 while (argc > 1 && argv[1][0] == '-'
3176 && (argv[1][1] == 'V' || argv[1][1] == 'b'))
3178 char opt = argv[1][1];
3179 const char *arg;
3180 if (argv[1][2] != '\0')
3182 arg = argv[1] + 2;
3183 argc -= 1;
3184 argv += 1;
3186 else if (argc > 2)
3188 arg = argv[2];
3189 argc -= 2;
3190 argv += 2;
3192 else
3193 fatal ("'-%c' option must have argument", opt);
3194 if (opt == 'V')
3195 new_version = arg;
3196 else
3197 new_machine = arg;
3200 for (baselen = strlen (progname); baselen > 0; baselen--)
3201 if (IS_DIR_SEPARATOR (progname[baselen-1]))
3202 break;
3203 new_argv0 = xmemdup (progname, baselen,
3204 baselen + concat_length (new_version, new_machine,
3205 "-gcc-", NULL) + 1);
3206 strcpy (new_argv0 + baselen, new_machine);
3207 strcat (new_argv0, "-gcc-");
3208 strcat (new_argv0, new_version);
3210 new_argv = xmemdup (argv, (argc + 1) * sizeof (argv[0]),
3211 (argc + 1) * sizeof (argv[0]));
3212 new_argv[0] = new_argv0;
3214 execvp (new_argv0, new_argv);
3215 fatal ("couldn't run '%s': %s", new_argv0, xstrerror (errno));
3218 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3219 see if we can create it from the pathname specified in argv[0]. */
3221 gcc_libexec_prefix = standard_libexec_prefix;
3222 #ifndef VMS
3223 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3224 if (!gcc_exec_prefix)
3226 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
3227 standard_exec_prefix);
3228 gcc_libexec_prefix = make_relative_prefix (argv[0],
3229 standard_bindir_prefix,
3230 standard_libexec_prefix);
3231 if (gcc_exec_prefix)
3232 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3234 else
3235 gcc_libexec_prefix = make_relative_prefix (gcc_exec_prefix,
3236 standard_exec_prefix,
3237 standard_libexec_prefix);
3238 #else
3239 #endif
3241 if (gcc_exec_prefix)
3243 int len = strlen (gcc_exec_prefix);
3245 if (len > (int) sizeof ("/lib/gcc/") - 1
3246 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3248 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3249 if (IS_DIR_SEPARATOR (*temp)
3250 && strncmp (temp + 1, "lib", 3) == 0
3251 && IS_DIR_SEPARATOR (temp[4])
3252 && strncmp (temp + 5, "gcc", 3) == 0)
3253 len -= sizeof ("/lib/gcc/") - 1;
3256 set_std_prefix (gcc_exec_prefix, len);
3257 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3258 PREFIX_PRIORITY_LAST, 0, 0);
3259 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3260 PREFIX_PRIORITY_LAST, 0, 0);
3263 /* COMPILER_PATH and LIBRARY_PATH have values
3264 that are lists of directory names with colons. */
3266 GET_ENVIRONMENT (temp, "COMPILER_PATH");
3267 if (temp)
3269 const char *startp, *endp;
3270 char *nstore = alloca (strlen (temp) + 3);
3272 startp = endp = temp;
3273 while (1)
3275 if (*endp == PATH_SEPARATOR || *endp == 0)
3277 strncpy (nstore, startp, endp - startp);
3278 if (endp == startp)
3279 strcpy (nstore, concat (".", dir_separator_str, NULL));
3280 else if (!IS_DIR_SEPARATOR (endp[-1]))
3282 nstore[endp - startp] = DIR_SEPARATOR;
3283 nstore[endp - startp + 1] = 0;
3285 else
3286 nstore[endp - startp] = 0;
3287 add_prefix (&exec_prefixes, nstore, 0,
3288 PREFIX_PRIORITY_LAST, 0, 0);
3289 add_prefix (&include_prefixes, nstore, 0,
3290 PREFIX_PRIORITY_LAST, 0, 0);
3291 if (*endp == 0)
3292 break;
3293 endp = startp = endp + 1;
3295 else
3296 endp++;
3300 GET_ENVIRONMENT (temp, LIBRARY_PATH_ENV);
3301 if (temp && *cross_compile == '0')
3303 const char *startp, *endp;
3304 char *nstore = alloca (strlen (temp) + 3);
3306 startp = endp = temp;
3307 while (1)
3309 if (*endp == PATH_SEPARATOR || *endp == 0)
3311 strncpy (nstore, startp, endp - startp);
3312 if (endp == startp)
3313 strcpy (nstore, concat (".", dir_separator_str, NULL));
3314 else if (!IS_DIR_SEPARATOR (endp[-1]))
3316 nstore[endp - startp] = DIR_SEPARATOR;
3317 nstore[endp - startp + 1] = 0;
3319 else
3320 nstore[endp - startp] = 0;
3321 add_prefix (&startfile_prefixes, nstore, NULL,
3322 PREFIX_PRIORITY_LAST, 0, 1);
3323 if (*endp == 0)
3324 break;
3325 endp = startp = endp + 1;
3327 else
3328 endp++;
3332 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3333 GET_ENVIRONMENT (temp, "LPATH");
3334 if (temp && *cross_compile == '0')
3336 const char *startp, *endp;
3337 char *nstore = alloca (strlen (temp) + 3);
3339 startp = endp = temp;
3340 while (1)
3342 if (*endp == PATH_SEPARATOR || *endp == 0)
3344 strncpy (nstore, startp, endp - startp);
3345 if (endp == startp)
3346 strcpy (nstore, concat (".", dir_separator_str, NULL));
3347 else if (!IS_DIR_SEPARATOR (endp[-1]))
3349 nstore[endp - startp] = DIR_SEPARATOR;
3350 nstore[endp - startp + 1] = 0;
3352 else
3353 nstore[endp - startp] = 0;
3354 add_prefix (&startfile_prefixes, nstore, NULL,
3355 PREFIX_PRIORITY_LAST, 0, 1);
3356 if (*endp == 0)
3357 break;
3358 endp = startp = endp + 1;
3360 else
3361 endp++;
3365 /* Convert new-style -- options to old-style. */
3366 translate_options (&argc, (const char *const **) &argv);
3368 /* Do language-specific adjustment/addition of flags. */
3369 lang_specific_driver (&argc, (const char *const **) &argv, &added_libraries);
3371 /* Scan argv twice. Here, the first time, just count how many switches
3372 there will be in their vector, and how many input files in theirs.
3373 Here we also parse the switches that cc itself uses (e.g. -v). */
3375 for (i = 1; i < argc; i++)
3377 if (! strcmp (argv[i], "-dumpspecs"))
3379 struct spec_list *sl;
3380 init_spec ();
3381 for (sl = specs; sl; sl = sl->next)
3382 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3383 if (link_command_spec)
3384 printf ("*link_command:\n%s\n\n", link_command_spec);
3385 exit (0);
3387 else if (! strcmp (argv[i], "-dumpversion"))
3389 printf ("%s\n", spec_version);
3390 exit (0);
3392 else if (! strcmp (argv[i], "-dumpmachine"))
3394 printf ("%s\n", spec_machine);
3395 exit (0);
3397 else if (strcmp (argv[i], "-fversion") == 0)
3399 /* translate_options () has turned --version into -fversion. */
3400 printf (_("%s (GCC) %s\n"), programname, version_string);
3401 printf ("Copyright %s 2005 Free Software Foundation, Inc.\n",
3402 _("(C)"));
3403 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
3404 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
3405 stdout);
3406 exit (0);
3408 else if (strcmp (argv[i], "-fhelp") == 0)
3410 /* translate_options () has turned --help into -fhelp. */
3411 print_help_list = 1;
3413 /* We will be passing a dummy file on to the sub-processes. */
3414 n_infiles++;
3415 n_switches++;
3417 /* CPP driver cannot obtain switch from cc1_options. */
3418 if (is_cpp_driver)
3419 add_preprocessor_option ("--help", 6);
3420 add_assembler_option ("--help", 6);
3421 add_linker_option ("--help", 6);
3423 else if (strcmp (argv[i], "-ftarget-help") == 0)
3425 /* translate_options() has turned --target-help into -ftarget-help. */
3426 target_help_flag = 1;
3428 /* We will be passing a dummy file on to the sub-processes. */
3429 n_infiles++;
3430 n_switches++;
3432 /* CPP driver cannot obtain switch from cc1_options. */
3433 if (is_cpp_driver)
3434 add_preprocessor_option ("--target-help", 13);
3435 add_assembler_option ("--target-help", 13);
3436 add_linker_option ("--target-help", 13);
3438 else if (! strcmp (argv[i], "-pass-exit-codes"))
3440 pass_exit_codes = 1;
3441 n_switches++;
3443 else if (! strcmp (argv[i], "-print-search-dirs"))
3444 print_search_dirs = 1;
3445 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3446 print_file_name = "libgcc.a";
3447 else if (! strncmp (argv[i], "-print-file-name=", 17))
3448 print_file_name = argv[i] + 17;
3449 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3450 print_prog_name = argv[i] + 17;
3451 else if (! strcmp (argv[i], "-print-multi-lib"))
3452 print_multi_lib = 1;
3453 else if (! strcmp (argv[i], "-print-multi-directory"))
3454 print_multi_directory = 1;
3455 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3456 print_multi_os_directory = 1;
3457 else if (! strncmp (argv[i], "-Wa,", 4))
3459 int prev, j;
3460 /* Pass the rest of this option to the assembler. */
3462 /* Split the argument at commas. */
3463 prev = 4;
3464 for (j = 4; argv[i][j]; j++)
3465 if (argv[i][j] == ',')
3467 add_assembler_option (argv[i] + prev, j - prev);
3468 prev = j + 1;
3471 /* Record the part after the last comma. */
3472 add_assembler_option (argv[i] + prev, j - prev);
3474 else if (! strncmp (argv[i], "-Wp,", 4))
3476 int prev, j;
3477 /* Pass the rest of this option to the preprocessor. */
3479 /* Split the argument at commas. */
3480 prev = 4;
3481 for (j = 4; argv[i][j]; j++)
3482 if (argv[i][j] == ',')
3484 add_preprocessor_option (argv[i] + prev, j - prev);
3485 prev = j + 1;
3488 /* Record the part after the last comma. */
3489 add_preprocessor_option (argv[i] + prev, j - prev);
3491 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3492 /* The +e options to the C++ front-end. */
3493 n_switches++;
3494 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3496 int j;
3497 /* Split the argument at commas. */
3498 for (j = 3; argv[i][j]; j++)
3499 n_infiles += (argv[i][j] == ',');
3501 else if (strcmp (argv[i], "-Xlinker") == 0)
3503 if (i + 1 == argc)
3504 fatal ("argument to '-Xlinker' is missing");
3506 n_infiles++;
3507 i++;
3509 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3511 if (i + 1 == argc)
3512 fatal ("argument to '-Xpreprocessor' is missing");
3514 add_preprocessor_option (argv[i+1], strlen (argv[i+1]));
3516 else if (strcmp (argv[i], "-Xassembler") == 0)
3518 if (i + 1 == argc)
3519 fatal ("argument to '-Xassembler' is missing");
3521 add_assembler_option (argv[i+1], strlen (argv[i+1]));
3523 else if (strcmp (argv[i], "-l") == 0)
3525 if (i + 1 == argc)
3526 fatal ("argument to '-l' is missing");
3528 n_infiles++;
3529 i++;
3531 else if (strncmp (argv[i], "-l", 2) == 0)
3532 n_infiles++;
3533 else if (strcmp (argv[i], "-save-temps") == 0)
3535 save_temps_flag = 1;
3536 n_switches++;
3538 else if (strcmp (argv[i], "-combine") == 0)
3540 combine_flag = 1;
3541 n_switches++;
3543 else if (strcmp (argv[i], "-specs") == 0)
3545 struct user_specs *user = xmalloc (sizeof (struct user_specs));
3546 if (++i >= argc)
3547 fatal ("argument to '-specs' is missing");
3549 user->next = (struct user_specs *) 0;
3550 user->filename = argv[i];
3551 if (user_specs_tail)
3552 user_specs_tail->next = user;
3553 else
3554 user_specs_head = user;
3555 user_specs_tail = user;
3557 else if (strncmp (argv[i], "-specs=", 7) == 0)
3559 struct user_specs *user = xmalloc (sizeof (struct user_specs));
3560 if (strlen (argv[i]) == 7)
3561 fatal ("argument to '-specs=' is missing");
3563 user->next = (struct user_specs *) 0;
3564 user->filename = argv[i] + 7;
3565 if (user_specs_tail)
3566 user_specs_tail->next = user;
3567 else
3568 user_specs_head = user;
3569 user_specs_tail = user;
3571 else if (strcmp (argv[i], "-time") == 0)
3572 report_times = 1;
3573 else if (strcmp (argv[i], "-pipe") == 0)
3575 /* -pipe has to go into the switches array as well as
3576 setting a flag. */
3577 use_pipes = 1;
3578 n_switches++;
3580 else if (strcmp (argv[i], "-###") == 0)
3582 /* This is similar to -v except that there is no execution
3583 of the commands and the echoed arguments are quoted. It
3584 is intended for use in shell scripts to capture the
3585 driver-generated command line. */
3586 verbose_only_flag++;
3587 verbose_flag++;
3589 else if (argv[i][0] == '-' && argv[i][1] != 0)
3591 const char *p = &argv[i][1];
3592 int c = *p;
3594 switch (c)
3596 case 'b':
3597 case 'V':
3598 fatal ("'-%c' must come at the start of the command line", c);
3599 break;
3601 case 'B':
3603 const char *value;
3604 int len;
3606 if (p[1] == 0 && i + 1 == argc)
3607 fatal ("argument to '-B' is missing");
3608 if (p[1] == 0)
3609 value = argv[++i];
3610 else
3611 value = p + 1;
3613 len = strlen (value);
3615 /* Catch the case where the user has forgotten to append a
3616 directory separator to the path. Note, they may be using
3617 -B to add an executable name prefix, eg "i386-elf-", in
3618 order to distinguish between multiple installations of
3619 GCC in the same directory. Hence we must check to see
3620 if appending a directory separator actually makes a
3621 valid directory name. */
3622 if (! IS_DIR_SEPARATOR (value [len - 1])
3623 && is_directory (value, "", 0))
3625 char *tmp = xmalloc (len + 2);
3626 strcpy (tmp, value);
3627 tmp[len] = DIR_SEPARATOR;
3628 tmp[++ len] = 0;
3629 value = tmp;
3632 /* As a kludge, if the arg is "[foo/]stageN/", just
3633 add "[foo/]include" to the include prefix. */
3634 if ((len == 7
3635 || (len > 7
3636 && (IS_DIR_SEPARATOR (value[len - 8]))))
3637 && strncmp (value + len - 7, "stage", 5) == 0
3638 && ISDIGIT (value[len - 2])
3639 && (IS_DIR_SEPARATOR (value[len - 1])))
3641 if (len == 7)
3642 add_prefix (&include_prefixes, "./", NULL,
3643 PREFIX_PRIORITY_B_OPT, 0, 0);
3644 else
3646 char *string = xmalloc (len - 6);
3647 memcpy (string, value, len - 7);
3648 string[len - 7] = 0;
3649 add_prefix (&include_prefixes, string, NULL,
3650 PREFIX_PRIORITY_B_OPT, 0, 0);
3654 add_prefix (&exec_prefixes, value, NULL,
3655 PREFIX_PRIORITY_B_OPT, 0, 0);
3656 add_prefix (&startfile_prefixes, value, NULL,
3657 PREFIX_PRIORITY_B_OPT, 0, 0);
3658 add_prefix (&include_prefixes, value, NULL,
3659 PREFIX_PRIORITY_B_OPT, 0, 0);
3660 n_switches++;
3662 break;
3664 case 'v': /* Print our subcommands and print versions. */
3665 n_switches++;
3666 /* If they do anything other than exactly `-v', don't set
3667 verbose_flag; rather, continue on to give the error. */
3668 if (p[1] != 0)
3669 break;
3670 verbose_flag++;
3671 break;
3673 case 'S':
3674 case 'c':
3675 if (p[1] == 0)
3677 have_c = 1;
3678 n_switches++;
3679 break;
3681 goto normal_switch;
3683 case 'o':
3684 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3685 if (! have_c)
3687 int skip;
3689 /* Forward scan, just in case -S or -c is specified
3690 after -o. */
3691 int j = i + 1;
3692 if (p[1] == 0)
3693 ++j;
3694 while (j < argc)
3696 if (argv[j][0] == '-')
3698 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
3699 && argv[j][2] == 0)
3701 have_c = 1;
3702 break;
3704 else if ((skip = SWITCH_TAKES_ARG (argv[j][1])))
3705 j += skip - (argv[j][2] != 0);
3706 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1)))
3707 j += skip;
3709 j++;
3712 #endif
3713 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3714 if (p[1] == 0)
3715 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0);
3716 else
3717 argv[i] = convert_filename (argv[i], ! have_c, 0);
3718 #endif
3719 goto normal_switch;
3721 default:
3722 normal_switch:
3724 #ifdef MODIFY_TARGET_NAME
3725 is_modify_target_name = 0;
3727 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3728 if (! strcmp (argv[i], modify_target[j].sw))
3730 char *new_name = xmalloc (strlen (modify_target[j].str)
3731 + strlen (spec_machine));
3732 const char *p, *r;
3733 char *q;
3734 int made_addition = 0;
3736 is_modify_target_name = 1;
3737 for (p = spec_machine, q = new_name; *p != 0; )
3739 if (modify_target[j].add_del == DELETE
3740 && (! strncmp (q, modify_target[j].str,
3741 strlen (modify_target[j].str))))
3742 p += strlen (modify_target[j].str);
3743 else if (modify_target[j].add_del == ADD
3744 && ! made_addition && *p == '-')
3746 for (r = modify_target[j].str; *r != 0; )
3747 *q++ = *r++;
3748 made_addition = 1;
3751 *q++ = *p++;
3754 spec_machine = new_name;
3757 if (is_modify_target_name)
3758 break;
3759 #endif
3761 n_switches++;
3763 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
3764 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
3765 else if (WORD_SWITCH_TAKES_ARG (p))
3766 i += WORD_SWITCH_TAKES_ARG (p);
3769 else
3771 n_infiles++;
3772 lang_n_infiles++;
3776 if ((save_temps_flag || report_times) && use_pipes)
3778 /* -save-temps overrides -pipe, so that temp files are produced */
3779 if (save_temps_flag)
3780 error ("warning: -pipe ignored because -save-temps specified");
3781 /* -time overrides -pipe because we can't get correct stats when
3782 multiple children are running at once. */
3783 else if (report_times)
3784 error ("warning: -pipe ignored because -time specified");
3786 use_pipes = 0;
3789 /* Set up the search paths before we go looking for config files. */
3791 /* These come before the md prefixes so that we will find gcc's subcommands
3792 (such as cpp) rather than those of the host system. */
3793 /* Use 2 as fourth arg meaning try just the machine as a suffix,
3794 as well as trying the machine and the version. */
3795 #ifndef OS2
3796 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
3797 PREFIX_PRIORITY_LAST, 1, 0);
3798 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
3799 PREFIX_PRIORITY_LAST, 2, 0);
3800 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3801 PREFIX_PRIORITY_LAST, 2, 0);
3802 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS",
3803 PREFIX_PRIORITY_LAST, 2, 0);
3804 add_prefix (&exec_prefixes, standard_exec_prefix_2, "BINUTILS",
3805 PREFIX_PRIORITY_LAST, 2, 0);
3806 #endif
3808 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3809 PREFIX_PRIORITY_LAST, 1, 0);
3810 add_prefix (&startfile_prefixes, standard_exec_prefix_2, "BINUTILS",
3811 PREFIX_PRIORITY_LAST, 1, 0);
3813 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3814 dir_separator_str, NULL);
3816 /* If tooldir is relative, base it on exec_prefixes. A relative
3817 tooldir lets us move the installed tree as a unit.
3819 If GCC_EXEC_PREFIX is defined, then we want to add two relative
3820 directories, so that we can search both the user specified directory
3821 and the standard place. */
3823 if (!IS_ABSOLUTE_PATH (tooldir_prefix))
3825 if (gcc_exec_prefix)
3827 char *gcc_exec_tooldir_prefix
3828 = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
3829 spec_version, dir_separator_str, tooldir_prefix, NULL);
3831 add_prefix (&exec_prefixes,
3832 concat (gcc_exec_tooldir_prefix, "bin",
3833 dir_separator_str, NULL),
3834 NULL, PREFIX_PRIORITY_LAST, 0, 0);
3835 add_prefix (&startfile_prefixes,
3836 concat (gcc_exec_tooldir_prefix, "lib",
3837 dir_separator_str, NULL),
3838 NULL, PREFIX_PRIORITY_LAST, 0, 1);
3841 tooldir_prefix = concat (standard_exec_prefix, spec_machine,
3842 dir_separator_str, spec_version,
3843 dir_separator_str, tooldir_prefix, NULL);
3846 add_prefix (&exec_prefixes,
3847 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3848 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0);
3849 add_prefix (&startfile_prefixes,
3850 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3851 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1);
3853 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
3854 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
3855 then consider it to relocate with the rest of the GCC installation
3856 if GCC_EXEC_PREFIX is set.
3857 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
3858 if (target_system_root && gcc_exec_prefix)
3860 char *tmp_prefix = make_relative_prefix (argv[0],
3861 standard_bindir_prefix,
3862 target_system_root);
3863 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
3865 target_system_root = tmp_prefix;
3866 target_system_root_changed = 1;
3869 #endif
3871 /* More prefixes are enabled in main, after we read the specs file
3872 and determine whether this is cross-compilation or not. */
3874 /* Then create the space for the vectors and scan again. */
3876 switches = xmalloc ((n_switches + 1) * sizeof (struct switchstr));
3877 infiles = xmalloc ((n_infiles + 1) * sizeof (struct infile));
3878 n_switches = 0;
3879 n_infiles = 0;
3880 last_language_n_infiles = -1;
3882 /* This, time, copy the text of each switch and store a pointer
3883 to the copy in the vector of switches.
3884 Store all the infiles in their vector. */
3886 for (i = 1; i < argc; i++)
3888 /* Just skip the switches that were handled by the preceding loop. */
3889 #ifdef MODIFY_TARGET_NAME
3890 is_modify_target_name = 0;
3892 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3893 if (! strcmp (argv[i], modify_target[j].sw))
3894 is_modify_target_name = 1;
3896 if (is_modify_target_name)
3898 else
3899 #endif
3900 if (! strncmp (argv[i], "-Wa,", 4))
3902 else if (! strncmp (argv[i], "-Wp,", 4))
3904 else if (! strcmp (argv[i], "-pass-exit-codes"))
3906 else if (! strcmp (argv[i], "-print-search-dirs"))
3908 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3910 else if (! strncmp (argv[i], "-print-file-name=", 17))
3912 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3914 else if (! strcmp (argv[i], "-print-multi-lib"))
3916 else if (! strcmp (argv[i], "-print-multi-directory"))
3918 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3920 else if (! strcmp (argv[i], "-ftarget-help"))
3922 else if (! strcmp (argv[i], "-fhelp"))
3924 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3926 /* Compensate for the +e options to the C++ front-end;
3927 they're there simply for cfront call-compatibility. We do
3928 some magic in default_compilers to pass them down properly.
3929 Note we deliberately start at the `+' here, to avoid passing
3930 -e0 or -e1 down into the linker. */
3931 switches[n_switches].part1 = &argv[i][0];
3932 switches[n_switches].args = 0;
3933 switches[n_switches].live_cond = SWITCH_OK;
3934 switches[n_switches].validated = 0;
3935 n_switches++;
3937 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3939 int prev, j;
3940 /* Split the argument at commas. */
3941 prev = 4;
3942 for (j = 4; argv[i][j]; j++)
3943 if (argv[i][j] == ',')
3945 infiles[n_infiles].language = "*";
3946 infiles[n_infiles++].name
3947 = save_string (argv[i] + prev, j - prev);
3948 prev = j + 1;
3950 /* Record the part after the last comma. */
3951 infiles[n_infiles].language = "*";
3952 infiles[n_infiles++].name = argv[i] + prev;
3954 else if (strcmp (argv[i], "-Xlinker") == 0)
3956 infiles[n_infiles].language = "*";
3957 infiles[n_infiles++].name = argv[++i];
3959 else if (strcmp (argv[i], "-Xassembler") == 0)
3961 infiles[n_infiles].language = "*";
3962 infiles[n_infiles++].name = argv[++i];
3964 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3966 infiles[n_infiles].language = "*";
3967 infiles[n_infiles++].name = argv[++i];
3969 else if (strcmp (argv[i], "-l") == 0)
3970 { /* POSIX allows separation of -l and the lib arg;
3971 canonicalize by concatenating -l with its arg */
3972 infiles[n_infiles].language = "*";
3973 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL);
3975 else if (strncmp (argv[i], "-l", 2) == 0)
3977 infiles[n_infiles].language = "*";
3978 infiles[n_infiles++].name = argv[i];
3980 else if (strcmp (argv[i], "-specs") == 0)
3981 i++;
3982 else if (strncmp (argv[i], "-specs=", 7) == 0)
3984 else if (strcmp (argv[i], "-time") == 0)
3986 else if (strcmp (argv[i], "-###") == 0)
3988 else if (argv[i][0] == '-' && argv[i][1] != 0)
3990 const char *p = &argv[i][1];
3991 int c = *p;
3993 if (c == 'x')
3995 if (p[1] == 0 && i + 1 == argc)
3996 fatal ("argument to '-x' is missing");
3997 if (p[1] == 0)
3998 spec_lang = argv[++i];
3999 else
4000 spec_lang = p + 1;
4001 if (! strcmp (spec_lang, "none"))
4002 /* Suppress the warning if -xnone comes after the last input
4003 file, because alternate command interfaces like g++ might
4004 find it useful to place -xnone after each input file. */
4005 spec_lang = 0;
4006 else
4007 last_language_n_infiles = n_infiles;
4008 continue;
4010 switches[n_switches].part1 = p;
4011 /* Deal with option arguments in separate argv elements. */
4012 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
4013 || WORD_SWITCH_TAKES_ARG (p))
4015 int j = 0;
4016 int n_args = WORD_SWITCH_TAKES_ARG (p);
4018 if (n_args == 0)
4020 /* Count only the option arguments in separate argv elements. */
4021 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
4023 if (i + n_args >= argc)
4024 fatal ("argument to '-%s' is missing", p);
4025 switches[n_switches].args
4026 = xmalloc ((n_args + 1) * sizeof(const char *));
4027 while (j < n_args)
4028 switches[n_switches].args[j++] = argv[++i];
4029 /* Null-terminate the vector. */
4030 switches[n_switches].args[j] = 0;
4032 else if (strchr (switches_need_spaces, c))
4034 /* On some systems, ld cannot handle some options without
4035 a space. So split the option from its argument. */
4036 char *part1 = xmalloc (2);
4037 part1[0] = c;
4038 part1[1] = '\0';
4040 switches[n_switches].part1 = part1;
4041 switches[n_switches].args = xmalloc (2 * sizeof (const char *));
4042 switches[n_switches].args[0] = xstrdup (p+1);
4043 switches[n_switches].args[1] = 0;
4045 else
4046 switches[n_switches].args = 0;
4048 switches[n_switches].live_cond = SWITCH_OK;
4049 switches[n_switches].validated = 0;
4050 switches[n_switches].ordering = 0;
4051 /* These are always valid, since gcc.c itself understands them. */
4052 if (!strcmp (p, "save-temps")
4053 || !strcmp (p, "static-libgcc")
4054 || !strcmp (p, "shared-libgcc")
4055 || !strcmp (p, "pipe"))
4056 switches[n_switches].validated = 1;
4057 else
4059 char ch = switches[n_switches].part1[0];
4060 if (ch == 'B')
4061 switches[n_switches].validated = 1;
4063 n_switches++;
4065 else
4067 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4068 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
4069 #endif
4071 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
4073 perror_with_name (argv[i]);
4074 error_count++;
4076 else
4078 infiles[n_infiles].language = spec_lang;
4079 infiles[n_infiles++].name = argv[i];
4084 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4085 error ("warning: '-x %s' after last input file has no effect", spec_lang);
4087 /* Ensure we only invoke each subprocess once. */
4088 if (target_help_flag || print_help_list)
4090 n_infiles = 1;
4092 /* Create a dummy input file, so that we can pass --target-help on to
4093 the various sub-processes. */
4094 infiles[0].language = "c";
4095 infiles[0].name = "help-dummy";
4097 if (target_help_flag)
4099 switches[n_switches].part1 = "--target-help";
4100 switches[n_switches].args = 0;
4101 switches[n_switches].live_cond = SWITCH_OK;
4102 switches[n_switches].validated = 0;
4104 n_switches++;
4107 if (print_help_list)
4109 switches[n_switches].part1 = "--help";
4110 switches[n_switches].args = 0;
4111 switches[n_switches].live_cond = SWITCH_OK;
4112 switches[n_switches].validated = 0;
4114 n_switches++;
4118 switches[n_switches].part1 = 0;
4119 infiles[n_infiles].name = 0;
4122 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4123 and place that in the environment. */
4125 static void
4126 set_collect_gcc_options (void)
4128 int i;
4129 int first_time;
4131 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4132 the compiler. */
4133 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4134 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4136 first_time = TRUE;
4137 for (i = 0; (int) i < n_switches; i++)
4139 const char *const *args;
4140 const char *p, *q;
4141 if (!first_time)
4142 obstack_grow (&collect_obstack, " ", 1);
4144 first_time = FALSE;
4146 /* Ignore elided switches. */
4147 if (switches[i].live_cond == SWITCH_IGNORE)
4148 continue;
4150 obstack_grow (&collect_obstack, "'-", 2);
4151 q = switches[i].part1;
4152 while ((p = strchr (q, '\'')))
4154 obstack_grow (&collect_obstack, q, p - q);
4155 obstack_grow (&collect_obstack, "'\\''", 4);
4156 q = ++p;
4158 obstack_grow (&collect_obstack, q, strlen (q));
4159 obstack_grow (&collect_obstack, "'", 1);
4161 for (args = switches[i].args; args && *args; args++)
4163 obstack_grow (&collect_obstack, " '", 2);
4164 q = *args;
4165 while ((p = strchr (q, '\'')))
4167 obstack_grow (&collect_obstack, q, p - q);
4168 obstack_grow (&collect_obstack, "'\\''", 4);
4169 q = ++p;
4171 obstack_grow (&collect_obstack, q, strlen (q));
4172 obstack_grow (&collect_obstack, "'", 1);
4175 obstack_grow (&collect_obstack, "\0", 1);
4176 putenv (obstack_finish (&collect_obstack));
4179 /* Process a spec string, accumulating and running commands. */
4181 /* These variables describe the input file name.
4182 input_file_number is the index on outfiles of this file,
4183 so that the output file name can be stored for later use by %o.
4184 input_basename is the start of the part of the input file
4185 sans all directory names, and basename_length is the number
4186 of characters starting there excluding the suffix .c or whatever. */
4188 static const char *input_filename;
4189 static int input_file_number;
4190 size_t input_filename_length;
4191 static int basename_length;
4192 static int suffixed_basename_length;
4193 static const char *input_basename;
4194 static const char *input_suffix;
4195 #ifndef HOST_LACKS_INODE_NUMBERS
4196 static struct stat input_stat;
4197 #endif
4198 static int input_stat_set;
4200 /* The compiler used to process the current input file. */
4201 static struct compiler *input_file_compiler;
4203 /* These are variables used within do_spec and do_spec_1. */
4205 /* Nonzero if an arg has been started and not yet terminated
4206 (with space, tab or newline). */
4207 static int arg_going;
4209 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4210 is a temporary file name. */
4211 static int delete_this_arg;
4213 /* Nonzero means %w has been seen; the next arg to be terminated
4214 is the output file name of this compilation. */
4215 static int this_is_output_file;
4217 /* Nonzero means %s has been seen; the next arg to be terminated
4218 is the name of a library file and we should try the standard
4219 search dirs for it. */
4220 static int this_is_library_file;
4222 /* Nonzero means that the input of this command is coming from a pipe. */
4223 static int input_from_pipe;
4225 /* Nonnull means substitute this for any suffix when outputting a switches
4226 arguments. */
4227 static const char *suffix_subst;
4229 /* Process the spec SPEC and run the commands specified therein.
4230 Returns 0 if the spec is successfully processed; -1 if failed. */
4233 do_spec (const char *spec)
4235 int value;
4237 value = do_spec_2 (spec);
4239 /* Force out any unfinished command.
4240 If -pipe, this forces out the last command if it ended in `|'. */
4241 if (value == 0)
4243 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4244 argbuf_index--;
4246 set_collect_gcc_options ();
4248 if (argbuf_index > 0)
4249 value = execute ();
4252 return value;
4255 static int
4256 do_spec_2 (const char *spec)
4258 const char *string;
4259 int result;
4261 clear_args ();
4262 arg_going = 0;
4263 delete_this_arg = 0;
4264 this_is_output_file = 0;
4265 this_is_library_file = 0;
4266 input_from_pipe = 0;
4267 suffix_subst = NULL;
4269 result = do_spec_1 (spec, 0, NULL);
4271 /* End any pending argument. */
4272 if (arg_going)
4274 obstack_1grow (&obstack, 0);
4275 string = obstack_finish (&obstack);
4276 if (this_is_library_file)
4277 string = find_file (string);
4278 store_arg (string, delete_this_arg, this_is_output_file);
4279 if (this_is_output_file)
4280 outfiles[input_file_number] = string;
4281 arg_going = 0;
4284 return result;
4288 /* Process the given spec string and add any new options to the end
4289 of the switches/n_switches array. */
4291 static void
4292 do_option_spec (const char *name, const char *spec)
4294 unsigned int i, value_count, value_len;
4295 const char *p, *q, *value;
4296 char *tmp_spec, *tmp_spec_p;
4298 if (configure_default_options[0].name == NULL)
4299 return;
4301 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4302 if (strcmp (configure_default_options[i].name, name) == 0)
4303 break;
4304 if (i == ARRAY_SIZE (configure_default_options))
4305 return;
4307 value = configure_default_options[i].value;
4308 value_len = strlen (value);
4310 /* Compute the size of the final spec. */
4311 value_count = 0;
4312 p = spec;
4313 while ((p = strstr (p, "%(VALUE)")) != NULL)
4315 p ++;
4316 value_count ++;
4319 /* Replace each %(VALUE) by the specified value. */
4320 tmp_spec = alloca (strlen (spec) + 1
4321 + value_count * (value_len - strlen ("%(VALUE)")));
4322 tmp_spec_p = tmp_spec;
4323 q = spec;
4324 while ((p = strstr (q, "%(VALUE)")) != NULL)
4326 memcpy (tmp_spec_p, q, p - q);
4327 tmp_spec_p = tmp_spec_p + (p - q);
4328 memcpy (tmp_spec_p, value, value_len);
4329 tmp_spec_p += value_len;
4330 q = p + strlen ("%(VALUE)");
4332 strcpy (tmp_spec_p, q);
4334 do_self_spec (tmp_spec);
4337 /* Process the given spec string and add any new options to the end
4338 of the switches/n_switches array. */
4340 static void
4341 do_self_spec (const char *spec)
4343 do_spec_2 (spec);
4344 do_spec_1 (" ", 0, NULL);
4346 if (argbuf_index > 0)
4348 int i, first;
4350 first = n_switches;
4351 n_switches += argbuf_index;
4352 switches = xrealloc (switches,
4353 sizeof (struct switchstr) * (n_switches + 1));
4355 switches[n_switches] = switches[first];
4356 for (i = 0; i < argbuf_index; i++)
4358 struct switchstr *sw;
4360 /* Each switch should start with '-'. */
4361 if (argbuf[i][0] != '-')
4362 fatal ("switch '%s' does not start with '-'", argbuf[i]);
4364 sw = &switches[i + first];
4365 sw->part1 = &argbuf[i][1];
4366 sw->args = 0;
4367 sw->live_cond = SWITCH_OK;
4368 sw->validated = 0;
4369 sw->ordering = 0;
4374 void
4375 do_spec_path (struct prefix_list *pl, const char *option,
4376 int omit_if_relative, int separate_options,
4377 int only_subdir,
4378 const char *dir_for_machine_suffix,
4379 const char *dir_for_no_suffix)
4381 static size_t bufsize = 0;
4382 static char *buffer;
4383 int idx;
4384 bool multilib_p = false;
4386 /* Used on systems which record the specified -L dirs
4387 and use them to search for dynamic linking. */
4388 /* Relative directories always come from -B,
4389 and it is better not to use them for searching
4390 at run time. In particular, stage1 loses. */
4391 if (omit_if_relative
4392 && !IS_ABSOLUTE_PATH (pl->prefix))
4393 return;
4395 /* Try subdirectory if there is one. */
4396 if (machine_suffix && dir_for_machine_suffix)
4398 if (strlen (pl->prefix) + strlen (machine_suffix)
4399 >= bufsize)
4400 bufsize = (strlen (pl->prefix)
4401 + strlen (machine_suffix)) * 2 + 1;
4402 buffer = xrealloc (buffer, bufsize);
4403 strcpy (buffer, pl->prefix);
4404 strcat (buffer, machine_suffix);
4405 if (is_directory (buffer, dir_for_machine_suffix, 1))
4407 multilib_p = true;
4408 do_spec_1 (option, separate_options, NULL);
4409 if (separate_options)
4410 do_spec_1 (" ", 0, NULL);
4411 do_spec_1 (buffer, 1, NULL);
4412 do_spec_1 (dir_for_machine_suffix, 1, NULL);
4413 /* Make this a separate argument. */
4414 do_spec_1 (" ", 0, NULL);
4417 if (!pl->require_machine_suffix && dir_for_no_suffix)
4419 if (is_directory (pl->prefix, dir_for_no_suffix, 1))
4421 multilib_p = true;
4422 do_spec_1 (option, separate_options, NULL);
4423 if (separate_options)
4424 do_spec_1 (" ", 0, NULL);
4425 do_spec_1 (pl->prefix, 1, NULL);
4426 do_spec_1 (dir_for_no_suffix, 1, NULL);
4427 /* Make this a separate argument. */
4428 do_spec_1 (" ", 0, NULL);
4432 if (only_subdir || multilib_p)
4433 return;
4435 if (machine_suffix)
4437 if (is_directory (pl->prefix, machine_suffix, 1))
4439 do_spec_1 (option, separate_options, NULL);
4440 if (separate_options)
4441 do_spec_1 (" ", 0, NULL);
4442 do_spec_1 (pl->prefix, 1, NULL);
4443 /* Remove slash from machine_suffix. */
4444 if (strlen (machine_suffix) >= bufsize)
4445 bufsize = strlen (machine_suffix) * 2 + 1;
4446 buffer = xrealloc (buffer, bufsize);
4447 strcpy (buffer, machine_suffix);
4448 idx = strlen (buffer);
4449 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4450 buffer[idx - 1] = 0;
4451 do_spec_1 (buffer, 1, NULL);
4452 /* Make this a separate argument. */
4453 do_spec_1 (" ", 0, NULL);
4456 if (!pl->require_machine_suffix)
4458 if (is_directory (pl->prefix, "", 1))
4460 do_spec_1 (option, separate_options, NULL);
4461 if (separate_options)
4462 do_spec_1 (" ", 0, NULL);
4463 /* Remove slash from pl->prefix. */
4464 if (strlen (pl->prefix) >= bufsize)
4465 bufsize = strlen (pl->prefix) * 2 + 1;
4466 buffer = xrealloc (buffer, bufsize);
4467 strcpy (buffer, pl->prefix);
4468 idx = strlen (buffer);
4469 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4470 buffer[idx - 1] = 0;
4471 do_spec_1 (buffer, 1, NULL);
4472 /* Make this a separate argument. */
4473 do_spec_1 (" ", 0, NULL);
4478 /* Process the sub-spec SPEC as a portion of a larger spec.
4479 This is like processing a whole spec except that we do
4480 not initialize at the beginning and we do not supply a
4481 newline by default at the end.
4482 INSWITCH nonzero means don't process %-sequences in SPEC;
4483 in this case, % is treated as an ordinary character.
4484 This is used while substituting switches.
4485 INSWITCH nonzero also causes SPC not to terminate an argument.
4487 Value is zero unless a line was finished
4488 and the command on that line reported an error. */
4490 static int
4491 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4493 const char *p = spec;
4494 int c;
4495 int i;
4496 const char *string;
4497 int value;
4499 while ((c = *p++))
4500 /* If substituting a switch, treat all chars like letters.
4501 Otherwise, NL, SPC, TAB and % are special. */
4502 switch (inswitch ? 'a' : c)
4504 case '\n':
4505 /* End of line: finish any pending argument,
4506 then run the pending command if one has been started. */
4507 if (arg_going)
4509 obstack_1grow (&obstack, 0);
4510 string = obstack_finish (&obstack);
4511 if (this_is_library_file)
4512 string = find_file (string);
4513 store_arg (string, delete_this_arg, this_is_output_file);
4514 if (this_is_output_file)
4515 outfiles[input_file_number] = string;
4517 arg_going = 0;
4519 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4521 /* A `|' before the newline means use a pipe here,
4522 but only if -pipe was specified.
4523 Otherwise, execute now and don't pass the `|' as an arg. */
4524 if (use_pipes)
4526 input_from_pipe = 1;
4527 break;
4529 else
4530 argbuf_index--;
4533 set_collect_gcc_options ();
4535 if (argbuf_index > 0)
4537 value = execute ();
4538 if (value)
4539 return value;
4541 /* Reinitialize for a new command, and for a new argument. */
4542 clear_args ();
4543 arg_going = 0;
4544 delete_this_arg = 0;
4545 this_is_output_file = 0;
4546 this_is_library_file = 0;
4547 input_from_pipe = 0;
4548 break;
4550 case '|':
4551 /* End any pending argument. */
4552 if (arg_going)
4554 obstack_1grow (&obstack, 0);
4555 string = obstack_finish (&obstack);
4556 if (this_is_library_file)
4557 string = find_file (string);
4558 store_arg (string, delete_this_arg, this_is_output_file);
4559 if (this_is_output_file)
4560 outfiles[input_file_number] = string;
4563 /* Use pipe */
4564 obstack_1grow (&obstack, c);
4565 arg_going = 1;
4566 break;
4568 case '\t':
4569 case ' ':
4570 /* Space or tab ends an argument if one is pending. */
4571 if (arg_going)
4573 obstack_1grow (&obstack, 0);
4574 string = obstack_finish (&obstack);
4575 if (this_is_library_file)
4576 string = find_file (string);
4577 store_arg (string, delete_this_arg, this_is_output_file);
4578 if (this_is_output_file)
4579 outfiles[input_file_number] = string;
4581 /* Reinitialize for a new argument. */
4582 arg_going = 0;
4583 delete_this_arg = 0;
4584 this_is_output_file = 0;
4585 this_is_library_file = 0;
4586 break;
4588 case '%':
4589 switch (c = *p++)
4591 case 0:
4592 fatal ("spec '%s' invalid", spec);
4594 case 'b':
4595 obstack_grow (&obstack, input_basename, basename_length);
4596 arg_going = 1;
4597 break;
4599 case 'B':
4600 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4601 arg_going = 1;
4602 break;
4604 case 'd':
4605 delete_this_arg = 2;
4606 break;
4608 /* Dump out the directories specified with LIBRARY_PATH,
4609 followed by the absolute directories
4610 that we search for startfiles. */
4611 case 'D':
4613 struct prefix_list *pl = startfile_prefixes.plist;
4615 for (; pl; pl = pl->next)
4617 const char *no_suffix_multilib_dir;
4619 no_suffix_multilib_dir = pl->os_multilib ? multilib_os_dir
4620 : multilib_dir;
4621 /* Do not separate options, include non-multilibbed variant. */
4622 do_spec_path (pl, "-L",
4623 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4625 #else
4627 #endif
4628 0, 0, multilib_dir, no_suffix_multilib_dir);
4631 break;
4633 case 'e':
4634 /* %efoo means report an error with `foo' as error message
4635 and don't execute any more commands for this file. */
4637 const char *q = p;
4638 char *buf;
4639 while (*p != 0 && *p != '\n')
4640 p++;
4641 buf = alloca (p - q + 1);
4642 strncpy (buf, q, p - q);
4643 buf[p - q] = 0;
4644 error ("%s", buf);
4645 return -1;
4647 break;
4648 case 'n':
4649 /* %nfoo means report a notice with `foo' on stderr. */
4651 const char *q = p;
4652 char *buf;
4653 while (*p != 0 && *p != '\n')
4654 p++;
4655 buf = alloca (p - q + 1);
4656 strncpy (buf, q, p - q);
4657 buf[p - q] = 0;
4658 notice ("%s\n", buf);
4659 if (*p)
4660 p++;
4662 break;
4664 case 'j':
4666 struct stat st;
4668 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4669 defined, and it is not a directory, and it is
4670 writable, use it. Otherwise, treat this like any
4671 other temporary file. */
4673 if ((!save_temps_flag)
4674 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4675 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4677 obstack_grow (&obstack, HOST_BIT_BUCKET,
4678 strlen (HOST_BIT_BUCKET));
4679 delete_this_arg = 0;
4680 arg_going = 1;
4681 break;
4684 goto create_temp_file;
4685 case '|':
4686 if (use_pipes)
4688 obstack_1grow (&obstack, '-');
4689 delete_this_arg = 0;
4690 arg_going = 1;
4692 /* consume suffix */
4693 while (*p == '.' || ISALPHA ((unsigned char) *p))
4694 p++;
4695 if (p[0] == '%' && p[1] == 'O')
4696 p += 2;
4698 break;
4700 goto create_temp_file;
4701 case 'm':
4702 if (use_pipes)
4704 /* consume suffix */
4705 while (*p == '.' || ISALPHA ((unsigned char) *p))
4706 p++;
4707 if (p[0] == '%' && p[1] == 'O')
4708 p += 2;
4710 break;
4712 goto create_temp_file;
4713 case 'g':
4714 case 'u':
4715 case 'U':
4716 create_temp_file:
4718 struct temp_name *t;
4719 int suffix_length;
4720 const char *suffix = p;
4721 char *saved_suffix = NULL;
4723 while (*p == '.' || ISALPHA ((unsigned char) *p))
4724 p++;
4725 suffix_length = p - suffix;
4726 if (p[0] == '%' && p[1] == 'O')
4728 p += 2;
4729 /* We don't support extra suffix characters after %O. */
4730 if (*p == '.' || ISALPHA ((unsigned char) *p))
4731 fatal ("spec '%s' has invalid '%%0%c'", spec, *p);
4732 if (suffix_length == 0)
4733 suffix = TARGET_OBJECT_SUFFIX;
4734 else
4736 saved_suffix
4737 = xmalloc (suffix_length
4738 + strlen (TARGET_OBJECT_SUFFIX));
4739 strncpy (saved_suffix, suffix, suffix_length);
4740 strcpy (saved_suffix + suffix_length,
4741 TARGET_OBJECT_SUFFIX);
4743 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4746 /* If the input_filename has the same suffix specified
4747 for the %g, %u, or %U, and -save-temps is specified,
4748 we could end up using that file as an intermediate
4749 thus clobbering the user's source file (.e.g.,
4750 gcc -save-temps foo.s would clobber foo.s with the
4751 output of cpp0). So check for this condition and
4752 generate a temp file as the intermediate. */
4754 if (save_temps_flag)
4756 temp_filename_length = basename_length + suffix_length;
4757 temp_filename = alloca (temp_filename_length + 1);
4758 strncpy ((char *) temp_filename, input_basename, basename_length);
4759 strncpy ((char *) temp_filename + basename_length, suffix,
4760 suffix_length);
4761 *((char *) temp_filename + temp_filename_length) = '\0';
4762 if (strcmp (temp_filename, input_filename) != 0)
4764 #ifndef HOST_LACKS_INODE_NUMBERS
4765 struct stat st_temp;
4767 /* Note, set_input() resets input_stat_set to 0. */
4768 if (input_stat_set == 0)
4770 input_stat_set = stat (input_filename, &input_stat);
4771 if (input_stat_set >= 0)
4772 input_stat_set = 1;
4775 /* If we have the stat for the input_filename
4776 and we can do the stat for the temp_filename
4777 then the they could still refer to the same
4778 file if st_dev/st_ino's are the same. */
4779 if (input_stat_set != 1
4780 || stat (temp_filename, &st_temp) < 0
4781 || input_stat.st_dev != st_temp.st_dev
4782 || input_stat.st_ino != st_temp.st_ino)
4783 #else
4784 /* Just compare canonical pathnames. */
4785 char* input_realname = lrealpath (input_filename);
4786 char* temp_realname = lrealpath (temp_filename);
4787 bool files_differ = strcmp (input_realname, temp_realname);
4788 free (input_realname);
4789 free (temp_realname);
4790 if (files_differ)
4791 #endif
4793 temp_filename = save_string (temp_filename,
4794 temp_filename_length + 1);
4795 obstack_grow (&obstack, temp_filename,
4796 temp_filename_length);
4797 arg_going = 1;
4798 delete_this_arg = 0;
4799 break;
4804 /* See if we already have an association of %g/%u/%U and
4805 suffix. */
4806 for (t = temp_names; t; t = t->next)
4807 if (t->length == suffix_length
4808 && strncmp (t->suffix, suffix, suffix_length) == 0
4809 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
4810 break;
4812 /* Make a new association if needed. %u and %j
4813 require one. */
4814 if (t == 0 || c == 'u' || c == 'j')
4816 if (t == 0)
4818 t = xmalloc (sizeof (struct temp_name));
4819 t->next = temp_names;
4820 temp_names = t;
4822 t->length = suffix_length;
4823 if (saved_suffix)
4825 t->suffix = saved_suffix;
4826 saved_suffix = NULL;
4828 else
4829 t->suffix = save_string (suffix, suffix_length);
4830 t->unique = (c == 'u' || c == 'U' || c == 'j');
4831 temp_filename = make_temp_file (t->suffix);
4832 temp_filename_length = strlen (temp_filename);
4833 t->filename = temp_filename;
4834 t->filename_length = temp_filename_length;
4837 if (saved_suffix)
4838 free (saved_suffix);
4840 obstack_grow (&obstack, t->filename, t->filename_length);
4841 delete_this_arg = 1;
4843 arg_going = 1;
4844 break;
4846 case 'i':
4847 if (combine_inputs)
4849 for (i = 0; (int) i < n_infiles; i++)
4850 if ((!infiles[i].language) || (infiles[i].language[0] != '*'))
4851 if (infiles[i].incompiler == input_file_compiler)
4853 store_arg (infiles[i].name, 0, 0);
4854 infiles[i].compiled = true;
4857 else
4859 obstack_grow (&obstack, input_filename, input_filename_length);
4860 arg_going = 1;
4862 break;
4864 case 'I':
4866 struct prefix_list *pl = include_prefixes.plist;
4868 if (gcc_exec_prefix)
4870 do_spec_1 ("-iprefix", 1, NULL);
4871 /* Make this a separate argument. */
4872 do_spec_1 (" ", 0, NULL);
4873 do_spec_1 (gcc_exec_prefix, 1, NULL);
4874 do_spec_1 (" ", 0, NULL);
4877 if (target_system_root_changed ||
4878 (target_system_root && target_sysroot_hdrs_suffix))
4880 do_spec_1 ("-isysroot", 1, NULL);
4881 /* Make this a separate argument. */
4882 do_spec_1 (" ", 0, NULL);
4883 do_spec_1 (target_system_root, 1, NULL);
4884 if (target_sysroot_hdrs_suffix)
4885 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
4886 do_spec_1 (" ", 0, NULL);
4889 for (; pl; pl = pl->next)
4890 /* Separate options, don't include non-suffixed variant. */
4891 do_spec_path (pl, "-isystem", 0, 1, 1, "include", "include");
4893 break;
4895 case 'o':
4897 int max = n_infiles;
4898 max += lang_specific_extra_outfiles;
4900 for (i = 0; i < max; i++)
4901 if (outfiles[i])
4902 store_arg (outfiles[i], 0, 0);
4903 break;
4906 case 'O':
4907 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4908 arg_going = 1;
4909 break;
4911 case 's':
4912 this_is_library_file = 1;
4913 break;
4915 case 'V':
4916 outfiles[input_file_number] = NULL;
4917 break;
4919 case 'w':
4920 this_is_output_file = 1;
4921 break;
4923 case 'W':
4925 int cur_index = argbuf_index;
4926 /* Handle the {...} following the %W. */
4927 if (*p != '{')
4928 fatal ("spec '%s' has invalid '%%W%c", spec, *p);
4929 p = handle_braces (p + 1);
4930 if (p == 0)
4931 return -1;
4932 /* End any pending argument. */
4933 if (arg_going)
4935 obstack_1grow (&obstack, 0);
4936 string = obstack_finish (&obstack);
4937 if (this_is_library_file)
4938 string = find_file (string);
4939 store_arg (string, delete_this_arg, this_is_output_file);
4940 if (this_is_output_file)
4941 outfiles[input_file_number] = string;
4942 arg_going = 0;
4944 /* If any args were output, mark the last one for deletion
4945 on failure. */
4946 if (argbuf_index != cur_index)
4947 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
4948 break;
4951 /* %x{OPTION} records OPTION for %X to output. */
4952 case 'x':
4954 const char *p1 = p;
4955 char *string;
4957 /* Skip past the option value and make a copy. */
4958 if (*p != '{')
4959 fatal ("spec '%s' has invalid '%%x%c'", spec, *p);
4960 while (*p++ != '}')
4962 string = save_string (p1 + 1, p - p1 - 2);
4964 /* See if we already recorded this option. */
4965 for (i = 0; i < n_linker_options; i++)
4966 if (! strcmp (string, linker_options[i]))
4968 free (string);
4969 return 0;
4972 /* This option is new; add it. */
4973 add_linker_option (string, strlen (string));
4975 break;
4977 /* Dump out the options accumulated previously using %x. */
4978 case 'X':
4979 for (i = 0; i < n_linker_options; i++)
4981 do_spec_1 (linker_options[i], 1, NULL);
4982 /* Make each accumulated option a separate argument. */
4983 do_spec_1 (" ", 0, NULL);
4985 break;
4987 /* Dump out the options accumulated previously using -Wa,. */
4988 case 'Y':
4989 for (i = 0; i < n_assembler_options; i++)
4991 do_spec_1 (assembler_options[i], 1, NULL);
4992 /* Make each accumulated option a separate argument. */
4993 do_spec_1 (" ", 0, NULL);
4995 break;
4997 /* Dump out the options accumulated previously using -Wp,. */
4998 case 'Z':
4999 for (i = 0; i < n_preprocessor_options; i++)
5001 do_spec_1 (preprocessor_options[i], 1, NULL);
5002 /* Make each accumulated option a separate argument. */
5003 do_spec_1 (" ", 0, NULL);
5005 break;
5007 /* Here are digits and numbers that just process
5008 a certain constant string as a spec. */
5010 case '1':
5011 value = do_spec_1 (cc1_spec, 0, NULL);
5012 if (value != 0)
5013 return value;
5014 break;
5016 case '2':
5017 value = do_spec_1 (cc1plus_spec, 0, NULL);
5018 if (value != 0)
5019 return value;
5020 break;
5022 case 'a':
5023 value = do_spec_1 (asm_spec, 0, NULL);
5024 if (value != 0)
5025 return value;
5026 break;
5028 case 'A':
5029 value = do_spec_1 (asm_final_spec, 0, NULL);
5030 if (value != 0)
5031 return value;
5032 break;
5034 case 'C':
5036 const char *const spec
5037 = (input_file_compiler->cpp_spec
5038 ? input_file_compiler->cpp_spec
5039 : cpp_spec);
5040 value = do_spec_1 (spec, 0, NULL);
5041 if (value != 0)
5042 return value;
5044 break;
5046 case 'E':
5047 value = do_spec_1 (endfile_spec, 0, NULL);
5048 if (value != 0)
5049 return value;
5050 break;
5052 case 'l':
5053 value = do_spec_1 (link_spec, 0, NULL);
5054 if (value != 0)
5055 return value;
5056 break;
5058 case 'L':
5059 value = do_spec_1 (lib_spec, 0, NULL);
5060 if (value != 0)
5061 return value;
5062 break;
5064 case 'G':
5065 value = do_spec_1 (libgcc_spec, 0, NULL);
5066 if (value != 0)
5067 return value;
5068 break;
5070 case 'R':
5071 /* We assume there is a directory
5072 separator at the end of this string. */
5073 if (target_system_root)
5075 obstack_grow (&obstack, target_system_root,
5076 strlen (target_system_root));
5077 if (target_sysroot_suffix)
5078 obstack_grow (&obstack, target_sysroot_suffix,
5079 strlen (target_sysroot_suffix));
5081 break;
5083 case 'S':
5084 value = do_spec_1 (startfile_spec, 0, NULL);
5085 if (value != 0)
5086 return value;
5087 break;
5089 /* Here we define characters other than letters and digits. */
5091 case '{':
5092 p = handle_braces (p);
5093 if (p == 0)
5094 return -1;
5095 break;
5097 case ':':
5098 p = handle_spec_function (p);
5099 if (p == 0)
5100 return -1;
5101 break;
5103 case '%':
5104 obstack_1grow (&obstack, '%');
5105 break;
5107 case '.':
5109 unsigned len = 0;
5111 while (p[len] && p[len] != ' ' && p[len] != '%')
5112 len++;
5113 suffix_subst = save_string (p - 1, len + 1);
5114 p += len;
5116 break;
5118 /* Henceforth ignore the option(s) matching the pattern
5119 after the %<. */
5120 case '<':
5122 unsigned len = 0;
5123 int have_wildcard = 0;
5124 int i;
5126 while (p[len] && p[len] != ' ' && p[len] != '\t')
5127 len++;
5129 if (p[len-1] == '*')
5130 have_wildcard = 1;
5132 for (i = 0; i < n_switches; i++)
5133 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5134 && (have_wildcard || switches[i].part1[len] == '\0'))
5136 switches[i].live_cond = SWITCH_IGNORE;
5137 switches[i].validated = 1;
5140 p += len;
5142 break;
5144 case '*':
5145 if (soft_matched_part)
5147 do_spec_1 (soft_matched_part, 1, NULL);
5148 do_spec_1 (" ", 0, NULL);
5150 else
5151 /* Catch the case where a spec string contains something like
5152 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5153 hand side of the :. */
5154 error ("spec failure: '%%*' has not been initialized by pattern match");
5155 break;
5157 /* Process a string found as the value of a spec given by name.
5158 This feature allows individual machine descriptions
5159 to add and use their own specs.
5160 %[...] modifies -D options the way %P does;
5161 %(...) uses the spec unmodified. */
5162 case '[':
5163 error ("warning: use of obsolete %%[ operator in specs");
5164 case '(':
5166 const char *name = p;
5167 struct spec_list *sl;
5168 int len;
5170 /* The string after the S/P is the name of a spec that is to be
5171 processed. */
5172 while (*p && *p != ')' && *p != ']')
5173 p++;
5175 /* See if it's in the list. */
5176 for (len = p - name, sl = specs; sl; sl = sl->next)
5177 if (sl->name_len == len && !strncmp (sl->name, name, len))
5179 name = *(sl->ptr_spec);
5180 #ifdef DEBUG_SPECS
5181 notice ("Processing spec %c%s%c, which is '%s'\n",
5182 c, sl->name, (c == '(') ? ')' : ']', name);
5183 #endif
5184 break;
5187 if (sl)
5189 if (c == '(')
5191 value = do_spec_1 (name, 0, NULL);
5192 if (value != 0)
5193 return value;
5195 else
5197 char *x = alloca (strlen (name) * 2 + 1);
5198 char *buf = x;
5199 const char *y = name;
5200 int flag = 0;
5202 /* Copy all of NAME into BUF, but put __ after
5203 every -D and at the end of each arg. */
5204 while (1)
5206 if (! strncmp (y, "-D", 2))
5208 *x++ = '-';
5209 *x++ = 'D';
5210 *x++ = '_';
5211 *x++ = '_';
5212 y += 2;
5213 flag = 1;
5214 continue;
5216 else if (flag
5217 && (*y == ' ' || *y == '\t' || *y == '='
5218 || *y == '}' || *y == 0))
5220 *x++ = '_';
5221 *x++ = '_';
5222 flag = 0;
5224 if (*y == 0)
5225 break;
5226 else
5227 *x++ = *y++;
5229 *x = 0;
5231 value = do_spec_1 (buf, 0, NULL);
5232 if (value != 0)
5233 return value;
5237 /* Discard the closing paren or bracket. */
5238 if (*p)
5239 p++;
5241 break;
5243 default:
5244 error ("spec failure: unrecognized spec option '%c'", c);
5245 break;
5247 break;
5249 case '\\':
5250 /* Backslash: treat next character as ordinary. */
5251 c = *p++;
5253 /* Fall through. */
5254 default:
5255 /* Ordinary character: put it into the current argument. */
5256 obstack_1grow (&obstack, c);
5257 arg_going = 1;
5260 /* End of string. If we are processing a spec function, we need to
5261 end any pending argument. */
5262 if (processing_spec_function && arg_going)
5264 obstack_1grow (&obstack, 0);
5265 string = obstack_finish (&obstack);
5266 if (this_is_library_file)
5267 string = find_file (string);
5268 store_arg (string, delete_this_arg, this_is_output_file);
5269 if (this_is_output_file)
5270 outfiles[input_file_number] = string;
5271 arg_going = 0;
5274 return 0;
5277 /* Look up a spec function. */
5279 static const struct spec_function *
5280 lookup_spec_function (const char *name)
5282 static const struct spec_function * const spec_function_tables[] =
5284 static_spec_functions,
5285 lang_specific_spec_functions,
5287 const struct spec_function *sf;
5288 unsigned int i;
5290 for (i = 0; i < ARRAY_SIZE (spec_function_tables); i++)
5292 for (sf = spec_function_tables[i]; sf->name != NULL; sf++)
5293 if (strcmp (sf->name, name) == 0)
5294 return sf;
5297 return NULL;
5300 /* Evaluate a spec function. */
5302 static const char *
5303 eval_spec_function (const char *func, const char *args)
5305 const struct spec_function *sf;
5306 const char *funcval;
5308 /* Saved spec processing context. */
5309 int save_argbuf_index;
5310 int save_argbuf_length;
5311 const char **save_argbuf;
5313 int save_arg_going;
5314 int save_delete_this_arg;
5315 int save_this_is_output_file;
5316 int save_this_is_library_file;
5317 int save_input_from_pipe;
5318 const char *save_suffix_subst;
5321 sf = lookup_spec_function (func);
5322 if (sf == NULL)
5323 fatal ("unknown spec function '%s'", func);
5325 /* Push the spec processing context. */
5326 save_argbuf_index = argbuf_index;
5327 save_argbuf_length = argbuf_length;
5328 save_argbuf = argbuf;
5330 save_arg_going = arg_going;
5331 save_delete_this_arg = delete_this_arg;
5332 save_this_is_output_file = this_is_output_file;
5333 save_this_is_library_file = this_is_library_file;
5334 save_input_from_pipe = input_from_pipe;
5335 save_suffix_subst = suffix_subst;
5337 /* Create a new spec processing context, and build the function
5338 arguments. */
5340 alloc_args ();
5341 if (do_spec_2 (args) < 0)
5342 fatal ("error in args to spec function '%s'", func);
5344 /* argbuf_index is an index for the next argument to be inserted, and
5345 so contains the count of the args already inserted. */
5347 funcval = (*sf->func) (argbuf_index, argbuf);
5349 /* Pop the spec processing context. */
5350 argbuf_index = save_argbuf_index;
5351 argbuf_length = save_argbuf_length;
5352 free (argbuf);
5353 argbuf = save_argbuf;
5355 arg_going = save_arg_going;
5356 delete_this_arg = save_delete_this_arg;
5357 this_is_output_file = save_this_is_output_file;
5358 this_is_library_file = save_this_is_library_file;
5359 input_from_pipe = save_input_from_pipe;
5360 suffix_subst = save_suffix_subst;
5362 return funcval;
5365 /* Handle a spec function call of the form:
5367 %:function(args)
5369 ARGS is processed as a spec in a separate context and split into an
5370 argument vector in the normal fashion. The function returns a string
5371 containing a spec which we then process in the caller's context, or
5372 NULL if no processing is required. */
5374 static const char *
5375 handle_spec_function (const char *p)
5377 char *func, *args;
5378 const char *endp, *funcval;
5379 int count;
5381 processing_spec_function++;
5383 /* Get the function name. */
5384 for (endp = p; *endp != '\0'; endp++)
5386 if (*endp == '(') /* ) */
5387 break;
5388 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5389 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5390 fatal ("malformed spec function name");
5392 if (*endp != '(') /* ) */
5393 fatal ("no arguments for spec function");
5394 func = save_string (p, endp - p);
5395 p = ++endp;
5397 /* Get the arguments. */
5398 for (count = 0; *endp != '\0'; endp++)
5400 /* ( */
5401 if (*endp == ')')
5403 if (count == 0)
5404 break;
5405 count--;
5407 else if (*endp == '(') /* ) */
5408 count++;
5410 /* ( */
5411 if (*endp != ')')
5412 fatal ("malformed spec function arguments");
5413 args = save_string (p, endp - p);
5414 p = ++endp;
5416 /* p now points to just past the end of the spec function expression. */
5418 funcval = eval_spec_function (func, args);
5419 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5420 p = NULL;
5422 free (func);
5423 free (args);
5425 processing_spec_function--;
5427 return p;
5430 /* Inline subroutine of handle_braces. Returns true if the current
5431 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5432 static inline bool
5433 input_suffix_matches (const char *atom, const char *end_atom)
5435 /* We special case the semantics of {.s:...} and {.S:...} and their
5436 negative variants. Instead of testing the input filename suffix,
5437 we test whether the input source file is an assembler file or an
5438 assembler-with-cpp file respectively. This allows us to correctly
5439 handle the -x command line option. */
5441 if (atom + 1 == end_atom
5442 && input_file_compiler
5443 && input_file_compiler->suffix)
5445 if (*atom == 's')
5446 return !strcmp (input_file_compiler->suffix, "@assembler");
5447 if (*atom == 'S')
5448 return !strcmp (input_file_compiler->suffix, "@assembler-with-cpp");
5451 return (input_suffix
5452 && !strncmp (input_suffix, atom, end_atom - atom)
5453 && input_suffix[end_atom - atom] == '\0');
5456 /* Inline subroutine of handle_braces. Returns true if a switch
5457 matching the atom bracketed by ATOM and END_ATOM appeared on the
5458 command line. */
5459 static inline bool
5460 switch_matches (const char *atom, const char *end_atom, int starred)
5462 int i;
5463 int len = end_atom - atom;
5464 int plen = starred ? len : -1;
5466 for (i = 0; i < n_switches; i++)
5467 if (!strncmp (switches[i].part1, atom, len)
5468 && (starred || switches[i].part1[len] == '\0')
5469 && check_live_switch (i, plen))
5470 return true;
5472 return false;
5475 /* Inline subroutine of handle_braces. Mark all of the switches which
5476 match ATOM (extends to END_ATOM; STARRED indicates whether there
5477 was a star after the atom) for later processing. */
5478 static inline void
5479 mark_matching_switches (const char *atom, const char *end_atom, int starred)
5481 int i;
5482 int len = end_atom - atom;
5483 int plen = starred ? len : -1;
5485 for (i = 0; i < n_switches; i++)
5486 if (!strncmp (switches[i].part1, atom, len)
5487 && (starred || switches[i].part1[len] == '\0')
5488 && check_live_switch (i, plen))
5489 switches[i].ordering = 1;
5492 /* Inline subroutine of handle_braces. Process all the currently
5493 marked switches through give_switch, and clear the marks. */
5494 static inline void
5495 process_marked_switches (void)
5497 int i;
5499 for (i = 0; i < n_switches; i++)
5500 if (switches[i].ordering == 1)
5502 switches[i].ordering = 0;
5503 give_switch (i, 0);
5507 /* Handle a %{ ... } construct. P points just inside the leading {.
5508 Returns a pointer one past the end of the brace block, or 0
5509 if we call do_spec_1 and that returns -1. */
5511 static const char *
5512 handle_braces (const char *p)
5514 const char *atom, *end_atom;
5515 const char *d_atom = NULL, *d_end_atom = NULL;
5516 const char *orig = p;
5518 bool a_is_suffix;
5519 bool a_is_starred;
5520 bool a_is_negated;
5521 bool a_matched;
5523 bool a_must_be_last = false;
5524 bool ordered_set = false;
5525 bool disjunct_set = false;
5526 bool disj_matched = false;
5527 bool disj_starred = true;
5528 bool n_way_choice = false;
5529 bool n_way_matched = false;
5531 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5535 if (a_must_be_last)
5536 goto invalid;
5538 /* Scan one "atom" (S in the description above of %{}, possibly
5539 with !, ., or * modifiers). */
5540 a_matched = a_is_suffix = a_is_starred = a_is_negated = false;
5542 SKIP_WHITE();
5543 if (*p == '!')
5544 p++, a_is_negated = true;
5546 SKIP_WHITE();
5547 if (*p == '.')
5548 p++, a_is_suffix = true;
5550 atom = p;
5551 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5552 || *p == ',' || *p == '.' || *p == '@')
5553 p++;
5554 end_atom = p;
5556 if (*p == '*')
5557 p++, a_is_starred = 1;
5559 SKIP_WHITE();
5560 switch (*p)
5562 case '&': case '}':
5563 /* Substitute the switch(es) indicated by the current atom. */
5564 ordered_set = true;
5565 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5566 || atom == end_atom)
5567 goto invalid;
5569 mark_matching_switches (atom, end_atom, a_is_starred);
5571 if (*p == '}')
5572 process_marked_switches ();
5573 break;
5575 case '|': case ':':
5576 /* Substitute some text if the current atom appears as a switch
5577 or suffix. */
5578 disjunct_set = true;
5579 if (ordered_set)
5580 goto invalid;
5582 if (atom == end_atom)
5584 if (!n_way_choice || disj_matched || *p == '|'
5585 || a_is_negated || a_is_suffix || a_is_starred)
5586 goto invalid;
5588 /* An empty term may appear as the last choice of an
5589 N-way choice set; it means "otherwise". */
5590 a_must_be_last = true;
5591 disj_matched = !n_way_matched;
5592 disj_starred = false;
5594 else
5596 if (a_is_suffix && a_is_starred)
5597 goto invalid;
5599 if (!a_is_starred)
5600 disj_starred = false;
5602 /* Don't bother testing this atom if we already have a
5603 match. */
5604 if (!disj_matched && !n_way_matched)
5606 if (a_is_suffix)
5607 a_matched = input_suffix_matches (atom, end_atom);
5608 else
5609 a_matched = switch_matches (atom, end_atom, a_is_starred);
5611 if (a_matched != a_is_negated)
5613 disj_matched = true;
5614 d_atom = atom;
5615 d_end_atom = end_atom;
5620 if (*p == ':')
5622 /* Found the body, that is, the text to substitute if the
5623 current disjunction matches. */
5624 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5625 disj_matched && !n_way_matched);
5626 if (p == 0)
5627 return 0;
5629 /* If we have an N-way choice, reset state for the next
5630 disjunction. */
5631 if (*p == ';')
5633 n_way_choice = true;
5634 n_way_matched |= disj_matched;
5635 disj_matched = false;
5636 disj_starred = true;
5637 d_atom = d_end_atom = NULL;
5640 break;
5642 default:
5643 goto invalid;
5646 while (*p++ != '}');
5648 return p;
5650 invalid:
5651 fatal ("braced spec '%s' is invalid at '%c'", orig, *p);
5653 #undef SKIP_WHITE
5656 /* Subroutine of handle_braces. Scan and process a brace substitution body
5657 (X in the description of %{} syntax). P points one past the colon;
5658 ATOM and END_ATOM bracket the first atom which was found to be true
5659 (present) in the current disjunction; STARRED indicates whether all
5660 the atoms in the current disjunction were starred (for syntax validation);
5661 MATCHED indicates whether the disjunction matched or not, and therefore
5662 whether or not the body is to be processed through do_spec_1 or just
5663 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5664 returns -1. */
5666 static const char *
5667 process_brace_body (const char *p, const char *atom, const char *end_atom,
5668 int starred, int matched)
5670 const char *body, *end_body;
5671 unsigned int nesting_level;
5672 bool have_subst = false;
5674 /* Locate the closing } or ;, honoring nested braces.
5675 Trim trailing whitespace. */
5676 body = p;
5677 nesting_level = 1;
5678 for (;;)
5680 if (*p == '{')
5681 nesting_level++;
5682 else if (*p == '}')
5684 if (!--nesting_level)
5685 break;
5687 else if (*p == ';' && nesting_level == 1)
5688 break;
5689 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
5690 have_subst = true;
5691 else if (*p == '\0')
5692 goto invalid;
5693 p++;
5696 end_body = p;
5697 while (end_body[-1] == ' ' || end_body[-1] == '\t')
5698 end_body--;
5700 if (have_subst && !starred)
5701 goto invalid;
5703 if (matched)
5705 /* Copy the substitution body to permanent storage and execute it.
5706 If have_subst is false, this is a simple matter of running the
5707 body through do_spec_1... */
5708 char *string = save_string (body, end_body - body);
5709 if (!have_subst)
5711 if (do_spec_1 (string, 0, NULL) < 0)
5712 return 0;
5714 else
5716 /* ... but if have_subst is true, we have to process the
5717 body once for each matching switch, with %* set to the
5718 variant part of the switch. */
5719 unsigned int hard_match_len = end_atom - atom;
5720 int i;
5722 for (i = 0; i < n_switches; i++)
5723 if (!strncmp (switches[i].part1, atom, hard_match_len)
5724 && check_live_switch (i, hard_match_len))
5726 if (do_spec_1 (string, 0,
5727 &switches[i].part1[hard_match_len]) < 0)
5728 return 0;
5729 /* Pass any arguments this switch has. */
5730 give_switch (i, 1);
5731 suffix_subst = NULL;
5736 return p;
5738 invalid:
5739 fatal ("braced spec body '%s' is invalid", body);
5742 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5743 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5744 spec, or -1 if either exact match or %* is used.
5746 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5747 whose value does not begin with "no-" is obsoleted by the same value
5748 with the "no-", similarly for a switch with the "no-" prefix. */
5750 static int
5751 check_live_switch (int switchnum, int prefix_length)
5753 const char *name = switches[switchnum].part1;
5754 int i;
5756 /* In the common case of {<at-most-one-letter>*}, a negating
5757 switch would always match, so ignore that case. We will just
5758 send the conflicting switches to the compiler phase. */
5759 if (prefix_length >= 0 && prefix_length <= 1)
5760 return 1;
5762 /* If we already processed this switch and determined if it was
5763 live or not, return our past determination. */
5764 if (switches[switchnum].live_cond != 0)
5765 return switches[switchnum].live_cond > 0;
5767 /* Now search for duplicate in a manner that depends on the name. */
5768 switch (*name)
5770 case 'O':
5771 for (i = switchnum + 1; i < n_switches; i++)
5772 if (switches[i].part1[0] == 'O')
5774 switches[switchnum].validated = 1;
5775 switches[switchnum].live_cond = SWITCH_FALSE;
5776 return 0;
5778 break;
5780 case 'W': case 'f': case 'm':
5781 if (! strncmp (name + 1, "no-", 3))
5783 /* We have Xno-YYY, search for XYYY. */
5784 for (i = switchnum + 1; i < n_switches; i++)
5785 if (switches[i].part1[0] == name[0]
5786 && ! strcmp (&switches[i].part1[1], &name[4]))
5788 switches[switchnum].validated = 1;
5789 switches[switchnum].live_cond = SWITCH_FALSE;
5790 return 0;
5793 else
5795 /* We have XYYY, search for Xno-YYY. */
5796 for (i = switchnum + 1; i < n_switches; i++)
5797 if (switches[i].part1[0] == name[0]
5798 && switches[i].part1[1] == 'n'
5799 && switches[i].part1[2] == 'o'
5800 && switches[i].part1[3] == '-'
5801 && !strcmp (&switches[i].part1[4], &name[1]))
5803 switches[switchnum].validated = 1;
5804 switches[switchnum].live_cond = SWITCH_FALSE;
5805 return 0;
5808 break;
5811 /* Otherwise the switch is live. */
5812 switches[switchnum].live_cond = SWITCH_LIVE;
5813 return 1;
5816 /* Pass a switch to the current accumulating command
5817 in the same form that we received it.
5818 SWITCHNUM identifies the switch; it is an index into
5819 the vector of switches gcc received, which is `switches'.
5820 This cannot fail since it never finishes a command line.
5822 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5824 static void
5825 give_switch (int switchnum, int omit_first_word)
5827 if (switches[switchnum].live_cond == SWITCH_IGNORE)
5828 return;
5830 if (!omit_first_word)
5832 do_spec_1 ("-", 0, NULL);
5833 do_spec_1 (switches[switchnum].part1, 1, NULL);
5836 if (switches[switchnum].args != 0)
5838 const char **p;
5839 for (p = switches[switchnum].args; *p; p++)
5841 const char *arg = *p;
5843 do_spec_1 (" ", 0, NULL);
5844 if (suffix_subst)
5846 unsigned length = strlen (arg);
5847 int dot = 0;
5849 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5850 if (arg[length] == '.')
5852 ((char *)arg)[length] = 0;
5853 dot = 1;
5854 break;
5856 do_spec_1 (arg, 1, NULL);
5857 if (dot)
5858 ((char *)arg)[length] = '.';
5859 do_spec_1 (suffix_subst, 1, NULL);
5861 else
5862 do_spec_1 (arg, 1, NULL);
5866 do_spec_1 (" ", 0, NULL);
5867 switches[switchnum].validated = 1;
5870 /* Search for a file named NAME trying various prefixes including the
5871 user's -B prefix and some standard ones.
5872 Return the absolute file name found. If nothing is found, return NAME. */
5874 static const char *
5875 find_file (const char *name)
5877 char *newname;
5879 /* Try multilib_dir if it is defined. */
5880 if (multilib_os_dir != NULL)
5882 newname = find_a_file (&startfile_prefixes, name, R_OK, 1);
5884 /* If we don't find it in the multi library dir, then fall
5885 through and look for it in the normal places. */
5886 if (newname != NULL)
5887 return newname;
5890 newname = find_a_file (&startfile_prefixes, name, R_OK, 0);
5891 return newname ? newname : name;
5894 /* Determine whether a directory exists. If LINKER, return 0 for
5895 certain fixed names not needed by the linker. If not LINKER, it is
5896 only important to return 0 if the host machine has a small ARG_MAX
5897 limit. */
5899 static int
5900 is_directory (const char *path1, const char *path2, int linker)
5902 int len1 = strlen (path1);
5903 int len2 = strlen (path2);
5904 char *path = alloca (3 + len1 + len2);
5905 char *cp;
5906 struct stat st;
5908 #ifndef SMALL_ARG_MAX
5909 if (! linker)
5910 return 1;
5911 #endif
5913 /* Construct the path from the two parts. Ensure the string ends with "/.".
5914 The resulting path will be a directory even if the given path is a
5915 symbolic link. */
5916 memcpy (path, path1, len1);
5917 memcpy (path + len1, path2, len2);
5918 cp = path + len1 + len2;
5919 if (!IS_DIR_SEPARATOR (cp[-1]))
5920 *cp++ = DIR_SEPARATOR;
5921 *cp++ = '.';
5922 *cp = '\0';
5924 /* Exclude directories that the linker is known to search. */
5925 if (linker
5926 && ((cp - path == 6
5927 && strcmp (path, concat (dir_separator_str, "lib",
5928 dir_separator_str, ".", NULL)) == 0)
5929 || (cp - path == 10
5930 && strcmp (path, concat (dir_separator_str, "usr",
5931 dir_separator_str, "lib",
5932 dir_separator_str, ".", NULL)) == 0)))
5933 return 0;
5935 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5938 /* Set up the various global variables to indicate that we're processing
5939 the input file named FILENAME. */
5941 void
5942 set_input (const char *filename)
5944 const char *p;
5946 input_filename = filename;
5947 input_filename_length = strlen (input_filename);
5949 input_basename = input_filename;
5950 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
5951 /* Skip drive name so 'x:foo' is handled properly. */
5952 if (input_basename[1] == ':')
5953 input_basename += 2;
5954 #endif
5955 for (p = input_basename; *p; p++)
5956 if (IS_DIR_SEPARATOR (*p))
5957 input_basename = p + 1;
5959 /* Find a suffix starting with the last period,
5960 and set basename_length to exclude that suffix. */
5961 basename_length = strlen (input_basename);
5962 suffixed_basename_length = basename_length;
5963 p = input_basename + basename_length;
5964 while (p != input_basename && *p != '.')
5965 --p;
5966 if (*p == '.' && p != input_basename)
5968 basename_length = p - input_basename;
5969 input_suffix = p + 1;
5971 else
5972 input_suffix = "";
5974 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5975 we will need to do a stat on the input_filename. The
5976 INPUT_STAT_SET signals that the stat is needed. */
5977 input_stat_set = 0;
5980 /* On fatal signals, delete all the temporary files. */
5982 static void
5983 fatal_error (int signum)
5985 signal (signum, SIG_DFL);
5986 delete_failure_queue ();
5987 delete_temp_files ();
5988 /* Get the same signal again, this time not handled,
5989 so its normal effect occurs. */
5990 kill (getpid (), signum);
5993 extern int main (int, const char **);
5996 main (int argc, const char **argv)
5998 size_t i;
5999 int value;
6000 int linker_was_run = 0;
6001 int lang_n_infiles = 0;
6002 int num_linker_inputs = 0;
6003 char *explicit_link_files;
6004 char *specs_file;
6005 const char *p;
6006 struct user_specs *uptr;
6008 p = argv[0] + strlen (argv[0]);
6009 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
6010 --p;
6011 programname = p;
6013 xmalloc_set_program_name (programname);
6015 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6016 /* Perform host dependent initialization when needed. */
6017 GCC_DRIVER_HOST_INITIALIZATION;
6018 #endif
6020 gcc_init_libintl ();
6022 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
6023 signal (SIGINT, fatal_error);
6024 #ifdef SIGHUP
6025 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
6026 signal (SIGHUP, fatal_error);
6027 #endif
6028 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
6029 signal (SIGTERM, fatal_error);
6030 #ifdef SIGPIPE
6031 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
6032 signal (SIGPIPE, fatal_error);
6033 #endif
6034 #ifdef SIGCHLD
6035 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6036 receive the signal. A different setting is inheritable */
6037 signal (SIGCHLD, SIG_DFL);
6038 #endif
6040 /* Allocate the argument vector. */
6041 alloc_args ();
6043 obstack_init (&obstack);
6045 /* Build multilib_select, et. al from the separate lines that make up each
6046 multilib selection. */
6048 const char *const *q = multilib_raw;
6049 int need_space;
6051 obstack_init (&multilib_obstack);
6052 while ((p = *q++) != (char *) 0)
6053 obstack_grow (&multilib_obstack, p, strlen (p));
6055 obstack_1grow (&multilib_obstack, 0);
6056 multilib_select = obstack_finish (&multilib_obstack);
6058 q = multilib_matches_raw;
6059 while ((p = *q++) != (char *) 0)
6060 obstack_grow (&multilib_obstack, p, strlen (p));
6062 obstack_1grow (&multilib_obstack, 0);
6063 multilib_matches = obstack_finish (&multilib_obstack);
6065 q = multilib_exclusions_raw;
6066 while ((p = *q++) != (char *) 0)
6067 obstack_grow (&multilib_obstack, p, strlen (p));
6069 obstack_1grow (&multilib_obstack, 0);
6070 multilib_exclusions = obstack_finish (&multilib_obstack);
6072 need_space = FALSE;
6073 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
6075 if (need_space)
6076 obstack_1grow (&multilib_obstack, ' ');
6077 obstack_grow (&multilib_obstack,
6078 multilib_defaults_raw[i],
6079 strlen (multilib_defaults_raw[i]));
6080 need_space = TRUE;
6083 obstack_1grow (&multilib_obstack, 0);
6084 multilib_defaults = obstack_finish (&multilib_obstack);
6087 /* Set up to remember the pathname of gcc and any options
6088 needed for collect. We use argv[0] instead of programname because
6089 we need the complete pathname. */
6090 obstack_init (&collect_obstack);
6091 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6092 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6093 putenv (obstack_finish (&collect_obstack));
6095 #ifdef INIT_ENVIRONMENT
6096 /* Set up any other necessary machine specific environment variables. */
6097 putenv (INIT_ENVIRONMENT);
6098 #endif
6100 /* Make a table of what switches there are (switches, n_switches).
6101 Make a table of specified input files (infiles, n_infiles).
6102 Decode switches that are handled locally. */
6104 process_command (argc, argv);
6106 /* Initialize the vector of specs to just the default.
6107 This means one element containing 0s, as a terminator. */
6109 compilers = xmalloc (sizeof default_compilers);
6110 memcpy (compilers, default_compilers, sizeof default_compilers);
6111 n_compilers = n_default_compilers;
6113 /* Read specs from a file if there is one. */
6115 machine_suffix = concat (spec_machine, dir_separator_str,
6116 spec_version, dir_separator_str, NULL);
6117 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6119 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, 0);
6120 /* Read the specs file unless it is a default one. */
6121 if (specs_file != 0 && strcmp (specs_file, "specs"))
6122 read_specs (specs_file, TRUE);
6123 else
6124 init_spec ();
6126 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6127 for any override of as, ld and libraries. */
6128 specs_file = alloca (strlen (standard_exec_prefix)
6129 + strlen (just_machine_suffix) + sizeof ("specs"));
6131 strcpy (specs_file, standard_exec_prefix);
6132 strcat (specs_file, just_machine_suffix);
6133 strcat (specs_file, "specs");
6134 if (access (specs_file, R_OK) == 0)
6135 read_specs (specs_file, TRUE);
6137 /* Process any configure-time defaults specified for the command line
6138 options, via OPTION_DEFAULT_SPECS. */
6139 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6140 do_option_spec (option_default_specs[i].name,
6141 option_default_specs[i].spec);
6143 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6144 of the command line. */
6146 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6147 do_self_spec (driver_self_specs[i]);
6149 /* If not cross-compiling, look for executables in the standard
6150 places. */
6151 if (*cross_compile == '0')
6153 if (*md_exec_prefix)
6155 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6156 PREFIX_PRIORITY_LAST, 0, 0);
6160 /* Process sysroot_suffix_spec. */
6161 if (*sysroot_suffix_spec != 0
6162 && do_spec_2 (sysroot_suffix_spec) == 0)
6164 if (argbuf_index > 1)
6165 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC.");
6166 else if (argbuf_index == 1)
6167 target_sysroot_suffix = xstrdup (argbuf[argbuf_index -1]);
6170 /* Process sysroot_hdrs_suffix_spec. */
6171 if (*sysroot_hdrs_suffix_spec != 0
6172 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6174 if (argbuf_index > 1)
6175 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC.");
6176 else if (argbuf_index == 1)
6177 target_sysroot_hdrs_suffix = xstrdup (argbuf[argbuf_index -1]);
6180 /* Look for startfiles in the standard places. */
6181 if (*startfile_prefix_spec != 0
6182 && do_spec_2 (startfile_prefix_spec) == 0
6183 && do_spec_1 (" ", 0, NULL) == 0)
6185 int ndx;
6186 for (ndx = 0; ndx < argbuf_index; ndx++)
6187 add_sysrooted_prefix (&startfile_prefixes, argbuf[ndx], "BINUTILS",
6188 PREFIX_PRIORITY_LAST, 0, 1);
6190 /* We should eventually get rid of all these and stick to
6191 startfile_prefix_spec exclusively. */
6192 else if (*cross_compile == '0' || target_system_root)
6194 if (*md_startfile_prefix)
6195 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6196 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6198 if (*md_startfile_prefix_1)
6199 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6200 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6202 /* If standard_startfile_prefix is relative, base it on
6203 standard_exec_prefix. This lets us move the installed tree
6204 as a unit. If GCC_EXEC_PREFIX is defined, base
6205 standard_startfile_prefix on that as well.
6207 If the prefix is relative, only search it for native compilers;
6208 otherwise we will search a directory containing host libraries. */
6209 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
6210 add_sysrooted_prefix (&startfile_prefixes,
6211 standard_startfile_prefix, "BINUTILS",
6212 PREFIX_PRIORITY_LAST, 0, 1);
6213 else if (*cross_compile == '0')
6215 if (gcc_exec_prefix)
6216 add_prefix (&startfile_prefixes,
6217 concat (gcc_exec_prefix, machine_suffix,
6218 standard_startfile_prefix, NULL),
6219 NULL, PREFIX_PRIORITY_LAST, 0, 1);
6220 add_prefix (&startfile_prefixes,
6221 concat (standard_exec_prefix,
6222 machine_suffix,
6223 standard_startfile_prefix, NULL),
6224 NULL, PREFIX_PRIORITY_LAST, 0, 1);
6227 if (*standard_startfile_prefix_1)
6228 add_sysrooted_prefix (&startfile_prefixes,
6229 standard_startfile_prefix_1, "BINUTILS",
6230 PREFIX_PRIORITY_LAST, 0, 1);
6231 if (*standard_startfile_prefix_2)
6232 add_sysrooted_prefix (&startfile_prefixes,
6233 standard_startfile_prefix_2, "BINUTILS",
6234 PREFIX_PRIORITY_LAST, 0, 1);
6237 /* Process any user specified specs in the order given on the command
6238 line. */
6239 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6241 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6242 R_OK, 0);
6243 read_specs (filename ? filename : uptr->filename, FALSE);
6246 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6247 if (gcc_exec_prefix)
6248 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6249 spec_version, dir_separator_str, NULL);
6251 /* Now we have the specs.
6252 Set the `valid' bits for switches that match anything in any spec. */
6254 validate_all_switches ();
6256 /* Now that we have the switches and the specs, set
6257 the subdirectory based on the options. */
6258 set_multilib_dir ();
6260 /* Warn about any switches that no pass was interested in. */
6262 for (i = 0; (int) i < n_switches; i++)
6263 if (! switches[i].validated)
6264 error ("unrecognized option '-%s'", switches[i].part1);
6266 /* Obey some of the options. */
6268 if (print_search_dirs)
6270 printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix);
6271 printf (_("programs: %s\n"), build_search_list (&exec_prefixes, "", 0));
6272 printf (_("libraries: %s\n"), build_search_list (&startfile_prefixes, "", 0));
6273 return (0);
6276 if (print_file_name)
6278 printf ("%s\n", find_file (print_file_name));
6279 return (0);
6282 if (print_prog_name)
6284 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6285 printf ("%s\n", (newname ? newname : print_prog_name));
6286 return (0);
6289 if (print_multi_lib)
6291 print_multilib_info ();
6292 return (0);
6295 if (print_multi_directory)
6297 if (multilib_dir == NULL)
6298 printf (".\n");
6299 else
6300 printf ("%s\n", multilib_dir);
6301 return (0);
6304 if (print_multi_os_directory)
6306 if (multilib_os_dir == NULL)
6307 printf (".\n");
6308 else
6309 printf ("%s\n", multilib_os_dir);
6310 return (0);
6313 if (target_help_flag)
6315 /* Print if any target specific options. */
6317 /* We do not exit here. Instead we have created a fake input file
6318 called 'target-dummy' which needs to be compiled, and we pass this
6319 on to the various sub-processes, along with the --target-help
6320 switch. */
6323 if (print_help_list)
6325 display_help ();
6327 if (! verbose_flag)
6329 printf (_("\nFor bug reporting instructions, please see:\n"));
6330 printf ("%s.\n", bug_report_url);
6332 return (0);
6335 /* We do not exit here. Instead we have created a fake input file
6336 called 'help-dummy' which needs to be compiled, and we pass this
6337 on the various sub-processes, along with the --help switch. */
6340 if (verbose_flag)
6342 int n;
6343 const char *thrmod;
6345 notice ("Target: %s\n", spec_machine);
6346 notice ("Configured with: %s\n", configuration_arguments);
6348 #ifdef THREAD_MODEL_SPEC
6349 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6350 but there's no point in doing all this processing just to get
6351 thread_model back. */
6352 obstack_init (&obstack);
6353 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6354 obstack_1grow (&obstack, '\0');
6355 thrmod = obstack_finish (&obstack);
6356 #else
6357 thrmod = thread_model;
6358 #endif
6360 notice ("Thread model: %s\n", thrmod);
6362 /* compiler_version is truncated at the first space when initialized
6363 from version string, so truncate version_string at the first space
6364 before comparing. */
6365 for (n = 0; version_string[n]; n++)
6366 if (version_string[n] == ' ')
6367 break;
6369 if (! strncmp (version_string, compiler_version, n)
6370 && compiler_version[n] == 0)
6371 notice ("gcc version %s\n", version_string);
6372 else
6373 notice ("gcc driver version %s executing gcc version %s\n",
6374 version_string, compiler_version);
6376 if (n_infiles == 0)
6377 return (0);
6380 if (n_infiles == added_libraries)
6381 fatal ("no input files");
6383 /* Make a place to record the compiler output file names
6384 that correspond to the input files. */
6386 i = n_infiles;
6387 i += lang_specific_extra_outfiles;
6388 outfiles = xcalloc (i, sizeof (char *));
6390 /* Record which files were specified explicitly as link input. */
6392 explicit_link_files = xcalloc (1, n_infiles);
6394 if (combine_flag)
6395 combine_inputs = true;
6396 else
6397 combine_inputs = false;
6399 for (i = 0; (int) i < n_infiles; i++)
6401 const char *name = infiles[i].name;
6402 struct compiler *compiler = lookup_compiler (name,
6403 strlen (name),
6404 infiles[i].language);
6406 if (compiler && !(compiler->combinable))
6407 combine_inputs = false;
6409 if (lang_n_infiles > 0 && compiler != input_file_compiler
6410 && infiles[i].language && infiles[i].language[0] != '*')
6411 infiles[i].incompiler = compiler;
6412 else if (compiler)
6414 lang_n_infiles++;
6415 input_file_compiler = compiler;
6416 infiles[i].incompiler = compiler;
6418 else
6420 /* Since there is no compiler for this input file, assume it is a
6421 linker file. */
6422 explicit_link_files[i] = 1;
6423 infiles[i].incompiler = NULL;
6425 infiles[i].compiled = false;
6426 infiles[i].preprocessed = false;
6429 if (combine_flag && save_temps_flag)
6431 bool save_combine_inputs = combine_inputs;
6432 /* Must do a separate pre-processing pass for C & Objective-C files, to
6433 obtain individual .i files. */
6435 combine_inputs = false;
6436 for (i = 0; (int) i < n_infiles; i++)
6438 int this_file_error = 0;
6440 input_file_number = i;
6441 set_input (infiles[i].name);
6442 if (infiles[i].incompiler
6443 && (infiles[i].incompiler)->needs_preprocessing)
6444 input_file_compiler = infiles[i].incompiler;
6445 else
6446 continue;
6448 if (input_file_compiler)
6450 if (input_file_compiler->spec[0] == '#')
6452 error ("%s: %s compiler not installed on this system",
6453 input_filename, &input_file_compiler->spec[1]);
6454 this_file_error = 1;
6456 else
6458 value = do_spec (input_file_compiler->spec);
6459 infiles[i].preprocessed = true;
6460 if (!have_o_argbuf_index)
6461 fatal ("spec '%s' is invalid", input_file_compiler->spec);
6462 infiles[i].name = argbuf[have_o_argbuf_index];
6463 infiles[i].incompiler
6464 = lookup_compiler (infiles[i].name,
6465 strlen (infiles[i].name),
6466 infiles[i].language);
6468 if (value < 0)
6469 this_file_error = 1;
6473 if (this_file_error)
6475 delete_failure_queue ();
6476 error_count++;
6477 break;
6479 clear_failure_queue ();
6481 combine_inputs = save_combine_inputs;
6484 for (i = 0; (int) i < n_infiles; i++)
6486 int this_file_error = 0;
6488 /* Tell do_spec what to substitute for %i. */
6490 input_file_number = i;
6491 set_input (infiles[i].name);
6493 if (infiles[i].compiled)
6494 continue;
6496 /* Use the same thing in %o, unless cp->spec says otherwise. */
6498 outfiles[i] = input_filename;
6500 /* Figure out which compiler from the file's suffix. */
6502 if (! combine_inputs)
6503 input_file_compiler
6504 = lookup_compiler (infiles[i].name, input_filename_length,
6505 infiles[i].language);
6506 else
6507 input_file_compiler = infiles[i].incompiler;
6509 if (input_file_compiler)
6511 /* Ok, we found an applicable compiler. Run its spec. */
6513 if (input_file_compiler->spec[0] == '#')
6515 error ("%s: %s compiler not installed on this system",
6516 input_filename, &input_file_compiler->spec[1]);
6517 this_file_error = 1;
6519 else
6521 value = do_spec (input_file_compiler->spec);
6522 infiles[i].compiled = true;
6523 if (value < 0)
6524 this_file_error = 1;
6528 /* If this file's name does not contain a recognized suffix,
6529 record it as explicit linker input. */
6531 else
6532 explicit_link_files[i] = 1;
6534 /* Clear the delete-on-failure queue, deleting the files in it
6535 if this compilation failed. */
6537 if (this_file_error)
6539 delete_failure_queue ();
6540 error_count++;
6542 /* If this compilation succeeded, don't delete those files later. */
6543 clear_failure_queue ();
6546 /* Reset the output file name to the first input file name, for use
6547 with %b in LINK_SPEC on a target that prefers not to emit a.out
6548 by default. */
6549 if (n_infiles > 0)
6550 set_input (infiles[0].name);
6552 if (error_count == 0)
6554 /* Make sure INPUT_FILE_NUMBER points to first available open
6555 slot. */
6556 input_file_number = n_infiles;
6557 if (lang_specific_pre_link ())
6558 error_count++;
6561 /* Determine if there are any linker input files. */
6562 num_linker_inputs = 0;
6563 for (i = 0; (int) i < n_infiles; i++)
6564 if (explicit_link_files[i] || outfiles[i] != NULL)
6565 num_linker_inputs++;
6567 /* Run ld to link all the compiler output files. */
6569 if (num_linker_inputs > 0 && error_count == 0)
6571 int tmp = execution_count;
6573 /* We'll use ld if we can't find collect2. */
6574 if (! strcmp (linker_name_spec, "collect2"))
6576 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, 0);
6577 if (s == NULL)
6578 linker_name_spec = "ld";
6580 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6581 for collect. */
6582 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH");
6583 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV);
6585 value = do_spec (link_command_spec);
6586 if (value < 0)
6587 error_count = 1;
6588 linker_was_run = (tmp != execution_count);
6591 /* If options said don't run linker,
6592 complain about input files to be given to the linker. */
6594 if (! linker_was_run && error_count == 0)
6595 for (i = 0; (int) i < n_infiles; i++)
6596 if (explicit_link_files[i])
6597 error ("%s: linker input file unused because linking not done",
6598 outfiles[i]);
6600 /* Delete some or all of the temporary files we made. */
6602 if (error_count)
6603 delete_failure_queue ();
6604 delete_temp_files ();
6606 if (print_help_list)
6608 printf (("\nFor bug reporting instructions, please see:\n"));
6609 printf ("%s\n", bug_report_url);
6612 return (signal_count != 0 ? 2
6613 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
6614 : 0);
6617 /* Find the proper compilation spec for the file name NAME,
6618 whose length is LENGTH. LANGUAGE is the specified language,
6619 or 0 if this file is to be passed to the linker. */
6621 static struct compiler *
6622 lookup_compiler (const char *name, size_t length, const char *language)
6624 struct compiler *cp;
6626 /* If this was specified by the user to be a linker input, indicate that. */
6627 if (language != 0 && language[0] == '*')
6628 return 0;
6630 /* Otherwise, look for the language, if one is spec'd. */
6631 if (language != 0)
6633 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6634 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6635 return cp;
6637 error ("language %s not recognized", language);
6638 return 0;
6641 /* Look for a suffix. */
6642 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6644 if (/* The suffix `-' matches only the file name `-'. */
6645 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6646 || (strlen (cp->suffix) < length
6647 /* See if the suffix matches the end of NAME. */
6648 && !strcmp (cp->suffix,
6649 name + length - strlen (cp->suffix))
6651 break;
6654 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6655 /* Look again, but case-insensitively this time. */
6656 if (cp < compilers)
6657 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6659 if (/* The suffix `-' matches only the file name `-'. */
6660 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6661 || (strlen (cp->suffix) < length
6662 /* See if the suffix matches the end of NAME. */
6663 && ((!strcmp (cp->suffix,
6664 name + length - strlen (cp->suffix))
6665 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6666 && !strcasecmp (cp->suffix,
6667 name + length - strlen (cp->suffix)))
6669 break;
6671 #endif
6673 if (cp >= compilers)
6675 if (cp->spec[0] != '@')
6676 /* A non-alias entry: return it. */
6677 return cp;
6679 /* An alias entry maps a suffix to a language.
6680 Search for the language; pass 0 for NAME and LENGTH
6681 to avoid infinite recursion if language not found. */
6682 return lookup_compiler (NULL, 0, cp->spec + 1);
6684 return 0;
6687 static char *
6688 save_string (const char *s, int len)
6690 char *result = xmalloc (len + 1);
6692 memcpy (result, s, len);
6693 result[len] = 0;
6694 return result;
6697 void
6698 pfatal_with_name (const char *name)
6700 perror_with_name (name);
6701 delete_temp_files ();
6702 exit (1);
6705 static void
6706 perror_with_name (const char *name)
6708 error ("%s: %s", name, xstrerror (errno));
6711 static void
6712 pfatal_pexecute (const char *errmsg_fmt, const char *errmsg_arg)
6714 if (errmsg_arg)
6716 int save_errno = errno;
6718 /* Space for trailing '\0' is in %s. */
6719 char *msg = xmalloc (strlen (errmsg_fmt) + strlen (errmsg_arg));
6720 sprintf (msg, errmsg_fmt, errmsg_arg);
6721 errmsg_fmt = msg;
6723 errno = save_errno;
6726 pfatal_with_name (errmsg_fmt);
6729 /* Output an error message and exit. */
6731 void
6732 fancy_abort (const char *file, int line, const char *func)
6734 fatal ("internal gcc abort in %s, at %s:%d", func, file, line);
6737 /* Output an error message and exit. */
6739 void
6740 fatal (const char *msgid, ...)
6742 va_list ap;
6744 va_start (ap, msgid);
6746 fprintf (stderr, "%s: ", programname);
6747 vfprintf (stderr, _(msgid), ap);
6748 va_end (ap);
6749 fprintf (stderr, "\n");
6750 delete_temp_files ();
6751 exit (1);
6754 void
6755 error (const char *msgid, ...)
6757 va_list ap;
6759 va_start (ap, msgid);
6760 fprintf (stderr, "%s: ", programname);
6761 vfprintf (stderr, _(msgid), ap);
6762 va_end (ap);
6764 fprintf (stderr, "\n");
6767 static void
6768 notice (const char *msgid, ...)
6770 va_list ap;
6772 va_start (ap, msgid);
6773 vfprintf (stderr, _(msgid), ap);
6774 va_end (ap);
6777 static inline void
6778 validate_switches_from_spec (const char *spec)
6780 const char *p = spec;
6781 char c;
6782 while ((c = *p++))
6783 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
6784 /* We have a switch spec. */
6785 p = validate_switches (p + 1);
6788 static void
6789 validate_all_switches (void)
6791 struct compiler *comp;
6792 struct spec_list *spec;
6794 for (comp = compilers; comp->spec; comp++)
6795 validate_switches_from_spec (comp->spec);
6797 /* Look through the linked list of specs read from the specs file. */
6798 for (spec = specs; spec; spec = spec->next)
6799 validate_switches_from_spec (*spec->ptr_spec);
6801 validate_switches_from_spec (link_command_spec);
6804 /* Look at the switch-name that comes after START
6805 and mark as valid all supplied switches that match it. */
6807 static const char *
6808 validate_switches (const char *start)
6810 const char *p = start;
6811 const char *atom;
6812 size_t len;
6813 int i;
6814 bool suffix = false;
6815 bool starred = false;
6817 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
6819 next_member:
6820 SKIP_WHITE ();
6822 if (*p == '!')
6823 p++;
6825 SKIP_WHITE ();
6826 if (*p == '.')
6827 suffix = true, p++;
6829 atom = p;
6830 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
6831 || *p == ',' || *p == '.' || *p == '@')
6832 p++;
6833 len = p - atom;
6835 if (*p == '*')
6836 starred = true, p++;
6838 SKIP_WHITE ();
6840 if (!suffix)
6842 /* Mark all matching switches as valid. */
6843 for (i = 0; i < n_switches; i++)
6844 if (!strncmp (switches[i].part1, atom, len)
6845 && (starred || switches[i].part1[len] == 0))
6846 switches[i].validated = 1;
6849 if (*p) p++;
6850 if (*p && (p[-1] == '|' || p[-1] == '&'))
6851 goto next_member;
6853 if (*p && p[-1] == ':')
6855 while (*p && *p != ';' && *p != '}')
6857 if (*p == '%')
6859 p++;
6860 if (*p == '{' || *p == '<')
6861 p = validate_switches (p+1);
6862 else if (p[0] == 'W' && p[1] == '{')
6863 p = validate_switches (p+2);
6865 else
6866 p++;
6869 if (*p) p++;
6870 if (*p && p[-1] == ';')
6871 goto next_member;
6874 return p;
6875 #undef SKIP_WHITE
6878 struct mdswitchstr
6880 const char *str;
6881 int len;
6884 static struct mdswitchstr *mdswitches;
6885 static int n_mdswitches;
6887 /* Check whether a particular argument was used. The first time we
6888 canonicalize the switches to keep only the ones we care about. */
6890 static int
6891 used_arg (const char *p, int len)
6893 struct mswitchstr
6895 const char *str;
6896 const char *replace;
6897 int len;
6898 int rep_len;
6901 static struct mswitchstr *mswitches;
6902 static int n_mswitches;
6903 int i, j;
6905 if (!mswitches)
6907 struct mswitchstr *matches;
6908 const char *q;
6909 int cnt = 0;
6911 /* Break multilib_matches into the component strings of string
6912 and replacement string. */
6913 for (q = multilib_matches; *q != '\0'; q++)
6914 if (*q == ';')
6915 cnt++;
6917 matches = alloca ((sizeof (struct mswitchstr)) * cnt);
6918 i = 0;
6919 q = multilib_matches;
6920 while (*q != '\0')
6922 matches[i].str = q;
6923 while (*q != ' ')
6925 if (*q == '\0')
6927 invalid_matches:
6928 fatal ("multilib spec '%s' is invalid", multilib_matches);
6930 q++;
6932 matches[i].len = q - matches[i].str;
6934 matches[i].replace = ++q;
6935 while (*q != ';' && *q != '\0')
6937 if (*q == ' ')
6938 goto invalid_matches;
6939 q++;
6941 matches[i].rep_len = q - matches[i].replace;
6942 i++;
6943 if (*q == ';')
6944 q++;
6947 /* Now build a list of the replacement string for switches that we care
6948 about. Make sure we allocate at least one entry. This prevents
6949 xmalloc from calling fatal, and prevents us from re-executing this
6950 block of code. */
6951 mswitches
6952 = xmalloc (sizeof (struct mswitchstr)
6953 * (n_mdswitches + (n_switches ? n_switches : 1)));
6954 for (i = 0; i < n_switches; i++)
6955 if (switches[i].live_cond != SWITCH_IGNORE)
6957 int xlen = strlen (switches[i].part1);
6958 for (j = 0; j < cnt; j++)
6959 if (xlen == matches[j].len
6960 && ! strncmp (switches[i].part1, matches[j].str, xlen))
6962 mswitches[n_mswitches].str = matches[j].replace;
6963 mswitches[n_mswitches].len = matches[j].rep_len;
6964 mswitches[n_mswitches].replace = (char *) 0;
6965 mswitches[n_mswitches].rep_len = 0;
6966 n_mswitches++;
6967 break;
6971 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
6972 on the command line nor any options mutually incompatible with
6973 them. */
6974 for (i = 0; i < n_mdswitches; i++)
6976 const char *r;
6978 for (q = multilib_options; *q != '\0'; q++)
6980 while (*q == ' ')
6981 q++;
6983 r = q;
6984 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
6985 || strchr (" /", q[mdswitches[i].len]) == NULL)
6987 while (*q != ' ' && *q != '/' && *q != '\0')
6988 q++;
6989 if (*q != '/')
6990 break;
6991 q++;
6994 if (*q != ' ' && *q != '\0')
6996 while (*r != ' ' && *r != '\0')
6998 q = r;
6999 while (*q != ' ' && *q != '/' && *q != '\0')
7000 q++;
7002 if (used_arg (r, q - r))
7003 break;
7005 if (*q != '/')
7007 mswitches[n_mswitches].str = mdswitches[i].str;
7008 mswitches[n_mswitches].len = mdswitches[i].len;
7009 mswitches[n_mswitches].replace = (char *) 0;
7010 mswitches[n_mswitches].rep_len = 0;
7011 n_mswitches++;
7012 break;
7015 r = q + 1;
7017 break;
7023 for (i = 0; i < n_mswitches; i++)
7024 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
7025 return 1;
7027 return 0;
7030 static int
7031 default_arg (const char *p, int len)
7033 int i;
7035 for (i = 0; i < n_mdswitches; i++)
7036 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
7037 return 1;
7039 return 0;
7042 /* Work out the subdirectory to use based on the options. The format of
7043 multilib_select is a list of elements. Each element is a subdirectory
7044 name followed by a list of options followed by a semicolon. The format
7045 of multilib_exclusions is the same, but without the preceding
7046 directory. First gcc will check the exclusions, if none of the options
7047 beginning with an exclamation point are present, and all of the other
7048 options are present, then we will ignore this completely. Passing
7049 that, gcc will consider each multilib_select in turn using the same
7050 rules for matching the options. If a match is found, that subdirectory
7051 will be used. */
7053 static void
7054 set_multilib_dir (void)
7056 const char *p;
7057 unsigned int this_path_len;
7058 const char *this_path, *this_arg;
7059 const char *start, *end;
7060 int not_arg;
7061 int ok, ndfltok, first;
7063 n_mdswitches = 0;
7064 start = multilib_defaults;
7065 while (*start == ' ' || *start == '\t')
7066 start++;
7067 while (*start != '\0')
7069 n_mdswitches++;
7070 while (*start != ' ' && *start != '\t' && *start != '\0')
7071 start++;
7072 while (*start == ' ' || *start == '\t')
7073 start++;
7076 if (n_mdswitches)
7078 int i = 0;
7080 mdswitches = xmalloc (sizeof (struct mdswitchstr) * n_mdswitches);
7081 for (start = multilib_defaults; *start != '\0'; start = end + 1)
7083 while (*start == ' ' || *start == '\t')
7084 start++;
7086 if (*start == '\0')
7087 break;
7089 for (end = start + 1;
7090 *end != ' ' && *end != '\t' && *end != '\0'; end++)
7093 obstack_grow (&multilib_obstack, start, end - start);
7094 obstack_1grow (&multilib_obstack, 0);
7095 mdswitches[i].str = obstack_finish (&multilib_obstack);
7096 mdswitches[i++].len = end - start;
7098 if (*end == '\0')
7099 break;
7103 p = multilib_exclusions;
7104 while (*p != '\0')
7106 /* Ignore newlines. */
7107 if (*p == '\n')
7109 ++p;
7110 continue;
7113 /* Check the arguments. */
7114 ok = 1;
7115 while (*p != ';')
7117 if (*p == '\0')
7119 invalid_exclusions:
7120 fatal ("multilib exclusions '%s' is invalid",
7121 multilib_exclusions);
7124 if (! ok)
7126 ++p;
7127 continue;
7130 this_arg = p;
7131 while (*p != ' ' && *p != ';')
7133 if (*p == '\0')
7134 goto invalid_exclusions;
7135 ++p;
7138 if (*this_arg != '!')
7139 not_arg = 0;
7140 else
7142 not_arg = 1;
7143 ++this_arg;
7146 ok = used_arg (this_arg, p - this_arg);
7147 if (not_arg)
7148 ok = ! ok;
7150 if (*p == ' ')
7151 ++p;
7154 if (ok)
7155 return;
7157 ++p;
7160 first = 1;
7161 p = multilib_select;
7162 while (*p != '\0')
7164 /* Ignore newlines. */
7165 if (*p == '\n')
7167 ++p;
7168 continue;
7171 /* Get the initial path. */
7172 this_path = p;
7173 while (*p != ' ')
7175 if (*p == '\0')
7177 invalid_select:
7178 fatal ("multilib select '%s' is invalid",
7179 multilib_select);
7181 ++p;
7183 this_path_len = p - this_path;
7185 /* Check the arguments. */
7186 ok = 1;
7187 ndfltok = 1;
7188 ++p;
7189 while (*p != ';')
7191 if (*p == '\0')
7192 goto invalid_select;
7194 if (! ok)
7196 ++p;
7197 continue;
7200 this_arg = p;
7201 while (*p != ' ' && *p != ';')
7203 if (*p == '\0')
7204 goto invalid_select;
7205 ++p;
7208 if (*this_arg != '!')
7209 not_arg = 0;
7210 else
7212 not_arg = 1;
7213 ++this_arg;
7216 /* If this is a default argument, we can just ignore it.
7217 This is true even if this_arg begins with '!'. Beginning
7218 with '!' does not mean that this argument is necessarily
7219 inappropriate for this library: it merely means that
7220 there is a more specific library which uses this
7221 argument. If this argument is a default, we need not
7222 consider that more specific library. */
7223 ok = used_arg (this_arg, p - this_arg);
7224 if (not_arg)
7225 ok = ! ok;
7227 if (! ok)
7228 ndfltok = 0;
7230 if (default_arg (this_arg, p - this_arg))
7231 ok = 1;
7233 if (*p == ' ')
7234 ++p;
7237 if (ok && first)
7239 if (this_path_len != 1
7240 || this_path[0] != '.')
7242 char *new_multilib_dir = xmalloc (this_path_len + 1);
7243 char *q;
7245 strncpy (new_multilib_dir, this_path, this_path_len);
7246 new_multilib_dir[this_path_len] = '\0';
7247 q = strchr (new_multilib_dir, ':');
7248 if (q != NULL)
7249 *q = '\0';
7250 multilib_dir = new_multilib_dir;
7252 first = 0;
7255 if (ndfltok)
7257 const char *q = this_path, *end = this_path + this_path_len;
7259 while (q < end && *q != ':')
7260 q++;
7261 if (q < end)
7263 char *new_multilib_os_dir = xmalloc (end - q);
7264 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
7265 new_multilib_os_dir[end - q - 1] = '\0';
7266 multilib_os_dir = new_multilib_os_dir;
7267 break;
7271 ++p;
7274 if (multilib_dir == NULL && multilib_os_dir != NULL
7275 && strcmp (multilib_os_dir, ".") == 0)
7277 free ((char *) multilib_os_dir);
7278 multilib_os_dir = NULL;
7280 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7281 multilib_os_dir = multilib_dir;
7284 /* Print out the multiple library subdirectory selection
7285 information. This prints out a series of lines. Each line looks
7286 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7287 required. Only the desired options are printed out, the negative
7288 matches. The options are print without a leading dash. There are
7289 no spaces to make it easy to use the information in the shell.
7290 Each subdirectory is printed only once. This assumes the ordering
7291 generated by the genmultilib script. Also, we leave out ones that match
7292 the exclusions. */
7294 static void
7295 print_multilib_info (void)
7297 const char *p = multilib_select;
7298 const char *last_path = 0, *this_path;
7299 int skip;
7300 unsigned int last_path_len = 0;
7302 while (*p != '\0')
7304 skip = 0;
7305 /* Ignore newlines. */
7306 if (*p == '\n')
7308 ++p;
7309 continue;
7312 /* Get the initial path. */
7313 this_path = p;
7314 while (*p != ' ')
7316 if (*p == '\0')
7318 invalid_select:
7319 fatal ("multilib select '%s' is invalid", multilib_select);
7322 ++p;
7325 /* When --disable-multilib was used but target defines
7326 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7327 to find multilib_os_dir, so skip them from output. */
7328 if (this_path[0] == '.' && this_path[1] == ':')
7329 skip = 1;
7331 /* Check for matches with the multilib_exclusions. We don't bother
7332 with the '!' in either list. If any of the exclusion rules match
7333 all of its options with the select rule, we skip it. */
7335 const char *e = multilib_exclusions;
7336 const char *this_arg;
7338 while (*e != '\0')
7340 int m = 1;
7341 /* Ignore newlines. */
7342 if (*e == '\n')
7344 ++e;
7345 continue;
7348 /* Check the arguments. */
7349 while (*e != ';')
7351 const char *q;
7352 int mp = 0;
7354 if (*e == '\0')
7356 invalid_exclusion:
7357 fatal ("multilib exclusion '%s' is invalid",
7358 multilib_exclusions);
7361 if (! m)
7363 ++e;
7364 continue;
7367 this_arg = e;
7369 while (*e != ' ' && *e != ';')
7371 if (*e == '\0')
7372 goto invalid_exclusion;
7373 ++e;
7376 q = p + 1;
7377 while (*q != ';')
7379 const char *arg;
7380 int len = e - this_arg;
7382 if (*q == '\0')
7383 goto invalid_select;
7385 arg = q;
7387 while (*q != ' ' && *q != ';')
7389 if (*q == '\0')
7390 goto invalid_select;
7391 ++q;
7394 if (! strncmp (arg, this_arg,
7395 (len < q - arg) ? q - arg : len)
7396 || default_arg (this_arg, e - this_arg))
7398 mp = 1;
7399 break;
7402 if (*q == ' ')
7403 ++q;
7406 if (! mp)
7407 m = 0;
7409 if (*e == ' ')
7410 ++e;
7413 if (m)
7415 skip = 1;
7416 break;
7419 if (*e != '\0')
7420 ++e;
7424 if (! skip)
7426 /* If this is a duplicate, skip it. */
7427 skip = (last_path != 0
7428 && (unsigned int) (p - this_path) == last_path_len
7429 && ! strncmp (last_path, this_path, last_path_len));
7431 last_path = this_path;
7432 last_path_len = p - this_path;
7435 /* If this directory requires any default arguments, we can skip
7436 it. We will already have printed a directory identical to
7437 this one which does not require that default argument. */
7438 if (! skip)
7440 const char *q;
7442 q = p + 1;
7443 while (*q != ';')
7445 const char *arg;
7447 if (*q == '\0')
7448 goto invalid_select;
7450 if (*q == '!')
7451 arg = NULL;
7452 else
7453 arg = q;
7455 while (*q != ' ' && *q != ';')
7457 if (*q == '\0')
7458 goto invalid_select;
7459 ++q;
7462 if (arg != NULL
7463 && default_arg (arg, q - arg))
7465 skip = 1;
7466 break;
7469 if (*q == ' ')
7470 ++q;
7474 if (! skip)
7476 const char *p1;
7478 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7479 putchar (*p1);
7480 putchar (';');
7483 ++p;
7484 while (*p != ';')
7486 int use_arg;
7488 if (*p == '\0')
7489 goto invalid_select;
7491 if (skip)
7493 ++p;
7494 continue;
7497 use_arg = *p != '!';
7499 if (use_arg)
7500 putchar ('@');
7502 while (*p != ' ' && *p != ';')
7504 if (*p == '\0')
7505 goto invalid_select;
7506 if (use_arg)
7507 putchar (*p);
7508 ++p;
7511 if (*p == ' ')
7512 ++p;
7515 if (! skip)
7517 /* If there are extra options, print them now. */
7518 if (multilib_extra && *multilib_extra)
7520 int print_at = TRUE;
7521 const char *q;
7523 for (q = multilib_extra; *q != '\0'; q++)
7525 if (*q == ' ')
7526 print_at = TRUE;
7527 else
7529 if (print_at)
7530 putchar ('@');
7531 putchar (*q);
7532 print_at = FALSE;
7537 putchar ('\n');
7540 ++p;
7544 /* if-exists built-in spec function.
7546 Checks to see if the file specified by the absolute pathname in
7547 ARGS exists. Returns that pathname if found.
7549 The usual use for this function is to check for a library file
7550 (whose name has been expanded with %s). */
7552 static const char *
7553 if_exists_spec_function (int argc, const char **argv)
7555 /* Must have only one argument. */
7556 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7557 return argv[0];
7559 return NULL;
7562 /* if-exists-else built-in spec function.
7564 This is like if-exists, but takes an additional argument which
7565 is returned if the first argument does not exist. */
7567 static const char *
7568 if_exists_else_spec_function (int argc, const char **argv)
7570 /* Must have exactly two arguments. */
7571 if (argc != 2)
7572 return NULL;
7574 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7575 return argv[0];
7577 return argv[1];
7580 /* replace-outfile built-in spec function.
7581 This looks for the first argument in the outfiles array's name and replaces it
7582 with the second argument. */
7584 static const char *
7585 replace_outfile_spec_function (int argc, const char **argv)
7587 int i;
7588 /* Must have exactly two arguments. */
7589 if (argc != 2)
7590 abort ();
7592 for (i = 0; i < n_infiles; i++)
7594 if (outfiles[i] && !strcmp (outfiles[i], argv[0]))
7595 outfiles[i] = xstrdup (argv[1]);
7597 return NULL;