1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000 Free Software Foundation, Inc.
5 This file is part of GNU CC.
7 GNU CC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU CC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU CC; see the file COPYING. If not, write to
19 the Free Software Foundation, 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA.
22 This paragraph is here to try to keep Sun CC from dying.
23 The number of chars here seems crucial!!!! */
25 /* This program is the user interface to the C compiler and possibly to
26 other compilers. It is used because compilation is a complicated procedure
27 which involves running several programs and passing temporary files between
28 them, forwarding the users switches to those programs selectively,
29 and deleting the temporary files at the end.
31 CC recognizes how to compile each input file by suffixes in the file names.
32 Once it knows which kind of compilation to perform, the procedure for
33 compilation is specified by a string called a "spec". */
44 #define exit __posix_exit
47 #ifdef HAVE_SYS_RESOURCE_H
48 #include <sys/resource.h>
50 #if defined (HAVE_DECL_GETRUSAGE) && !HAVE_DECL_GETRUSAGE
51 extern int getrusage PARAMS ((int, struct rusage *));
54 /* By default there is no special suffix for executables. */
55 #ifdef EXECUTABLE_SUFFIX
56 #define HAVE_EXECUTABLE_SUFFIX
58 #define EXECUTABLE_SUFFIX ""
61 /* By default, the suffix for object files is ".o". */
63 #define HAVE_OBJECT_SUFFIX
65 #define OBJECT_SUFFIX ".o"
69 /* FIXME: the location independence code for VMS is hairier than this,
70 and hasn't been written. */
76 static char dir_separator_str[] = { DIR_SEPARATOR, 0 };
78 #define obstack_chunk_alloc xmalloc
79 #define obstack_chunk_free free
81 #ifndef GET_ENV_PATH_LIST
82 #define GET_ENV_PATH_LIST(VAR,NAME) do { (VAR) = getenv (NAME); } while (0)
85 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
86 #ifndef LIBRARY_PATH_ENV
87 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
91 #define kill(p,s) raise(s)
94 /* If a stage of compilation returns an exit status >= 1,
95 compilation of that file ceases. */
97 #define MIN_FATAL_STATUS 1
99 /* Flag saying to pass the greatest exit code returned by a sub-process
100 to the calling program. */
101 static int pass_exit_codes;
103 /* Flag saying to print the directories gcc will search through looking for
104 programs, libraries, etc. */
106 static int print_search_dirs;
108 /* Flag saying to print the full filename of this file
109 as found through our usual search mechanism. */
111 static const char *print_file_name = NULL;
113 /* As print_file_name, but search for executable file. */
115 static const char *print_prog_name = NULL;
117 /* Flag saying to print the relative path we'd use to
118 find libgcc.a given the current compiler flags. */
120 static int print_multi_directory;
122 /* Flag saying to print the list of subdirectories and
123 compiler flags used to select them in a standard form. */
125 static int print_multi_lib;
127 /* Flag saying to print the command line options understood by gcc and its
130 static int print_help_list;
132 /* Flag indicating whether we should print the command and arguments */
134 static int verbose_flag;
136 /* Flag indicating whether we should report subprocess execution times
137 (if this is supported by the system - see pexecute.c). */
139 static int report_times;
141 /* Nonzero means write "temp" files in source directory
142 and use the source file's name in them, and don't delete them. */
144 static int save_temps_flag;
146 /* The compiler version. */
148 static const char *compiler_version;
150 /* The target version specified with -V */
152 static const char *spec_version = DEFAULT_TARGET_VERSION;
154 /* The target machine specified with -b. */
156 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
158 /* Nonzero if cross-compiling.
159 When -b is used, the value comes from the `specs' file. */
162 static const char *cross_compile = "1";
164 static const char *cross_compile = "0";
167 #ifdef MODIFY_TARGET_NAME
169 /* Information on how to alter the target name based on a command-line
170 switch. The only case we support now is simply appending or deleting a
171 string to or from the end of the first part of the configuration name. */
176 enum add_del {ADD, DELETE} add_del;
179 modify_target[] = MODIFY_TARGET_NAME;
182 /* The number of errors that have occurred; the link phase will not be
183 run if this is non-zero. */
184 static int error_count = 0;
186 /* Greatest exit code of sub-processes that has been encountered up to
188 static int greatest_status = 1;
190 /* This is the obstack which we use to allocate many strings. */
192 static struct obstack obstack;
194 /* This is the obstack to build an environment variable to pass to
195 collect2 that describes all of the relevant switches of what to
196 pass the compiler in building the list of pointers to constructors
199 static struct obstack collect_obstack;
201 /* These structs are used to collect resource usage information for
203 #ifdef HAVE_GETRUSAGE
204 static struct rusage rus, prus;
207 /* Forward declaration for prototypes. */
210 static void init_spec PARAMS ((void));
212 static char **split_directories PARAMS ((const char *, int *));
213 static void free_split_directories PARAMS ((char **));
214 static char *make_relative_prefix PARAMS ((const char *, const char *, const char *));
216 static void store_arg PARAMS ((const char *, int, int));
217 static char *load_specs PARAMS ((const char *));
218 static void read_specs PARAMS ((const char *, int));
219 static void set_spec PARAMS ((const char *, const char *));
220 static struct compiler *lookup_compiler PARAMS ((const char *, size_t, const char *));
221 static char *build_search_list PARAMS ((struct path_prefix *, const char *, int));
222 static void putenv_from_prefixes PARAMS ((struct path_prefix *, const char *));
223 static int access_check PARAMS ((const char *, int));
224 static char *find_a_file PARAMS ((struct path_prefix *, const char *, int));
225 static void add_prefix PARAMS ((struct path_prefix *, const char *,
226 const char *, int, int, int *));
227 static void translate_options PARAMS ((int *, const char *const **));
228 static char *skip_whitespace PARAMS ((char *));
229 static void record_temp_file PARAMS ((const char *, int, int));
230 static void delete_if_ordinary PARAMS ((const char *));
231 static void delete_temp_files PARAMS ((void));
232 static void delete_failure_queue PARAMS ((void));
233 static void clear_failure_queue PARAMS ((void));
234 static int check_live_switch PARAMS ((int, int));
235 static const char *handle_braces PARAMS ((const char *));
236 static char *save_string PARAMS ((const char *, int));
237 static int do_spec_1 PARAMS ((const char *, int, const char *));
238 static const char *find_file PARAMS ((const char *));
239 static int is_directory PARAMS ((const char *, const char *, int));
240 static void validate_switches PARAMS ((const char *));
241 static void validate_all_switches PARAMS ((void));
242 static void give_switch PARAMS ((int, int, int));
243 static int used_arg PARAMS ((const char *, int));
244 static int default_arg PARAMS ((const char *, int));
245 static void set_multilib_dir PARAMS ((void));
246 static void print_multilib_info PARAMS ((void));
247 static void pfatal_with_name PARAMS ((const char *)) ATTRIBUTE_NORETURN;
248 static void perror_with_name PARAMS ((const char *));
249 static void pfatal_pexecute PARAMS ((const char *, const char *))
251 static void error PARAMS ((const char *, ...))
253 static void notice PARAMS ((const char *, ...))
255 static void display_help PARAMS ((void));
256 static void add_preprocessor_option PARAMS ((const char *, int));
257 static void add_assembler_option PARAMS ((const char *, int));
258 static void add_linker_option PARAMS ((const char *, int));
259 static void process_command PARAMS ((int, const char *const *));
260 static int execute PARAMS ((void));
261 static void clear_args PARAMS ((void));
262 static void fatal_error PARAMS ((int));
263 static void set_input PARAMS ((const char *));
265 /* Specs are strings containing lines, each of which (if not blank)
266 is made up of a program name, and arguments separated by spaces.
267 The program name must be exact and start from root, since no path
268 is searched and it is unreliable to depend on the current working directory.
269 Redirection of input or output is not supported; the subprograms must
270 accept filenames saying what files to read and write.
272 In addition, the specs can contain %-sequences to substitute variable text
273 or for conditional text. Here is a table of all defined %-sequences.
274 Note that spaces are not generated automatically around the results of
275 expanding these sequences; therefore, you can concatenate them together
276 or with constant text in a single argument.
278 %% substitute one % into the program name or argument.
279 %i substitute the name of the input file being processed.
280 %b substitute the basename of the input file being processed.
281 This is the substring up to (and not including) the last period
282 and not including the directory.
283 %B same as %b, but include the file suffix (text after the last period).
285 substitute a file name that has suffix SUFFIX and is chosen
286 once per compilation, and mark the argument a la %d. To reduce
287 exposure to denial-of-service attacks, the file name is now
288 chosen in a way that is hard to predict even when previously
289 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
290 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
291 the regexp "[.A-Za-z]*%O"; "%O" is treated exactly as if it
292 had been pre-processed. Previously, %g was simply substituted
293 with a file name chosen once per compilation, without regard
294 to any appended suffix (which was therefore treated just like
295 ordinary text), making such attacks more likely to succeed.
297 like %g, but generates a new temporary file name even if %uSUFFIX
300 substitutes the last file name generated with %uSUFFIX, generating a
301 new one if there is no such last file name. In the absence of any
302 %uSUFFIX, this is just like %gSUFFIX, except they don't share
303 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
304 would involve the generation of two distinct file names, one
305 for each `%g.s' and another for each `%U.s'. Previously, %U was
306 simply substituted with a file name chosen for the previous %u,
307 without regard to any appended suffix.
309 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
310 writable, and if save-temps is off; otherwise, substitute the name
311 of a temporary file, just like %u. This temporary file is not
312 meant for communication between processes, but rather as a junk
314 %d marks the argument containing or following the %d as a
315 temporary file name, so that that file will be deleted if CC exits
316 successfully. Unlike %g, this contributes no text to the argument.
317 %w marks the argument containing or following the %w as the
318 "output file" of this compilation. This puts the argument
319 into the sequence of arguments that %o will substitute later.
321 like %{...} but mark last argument supplied within
322 as a file to be deleted on failure.
323 %o substitutes the names of all the output files, with spaces
324 automatically placed around them. You should write spaces
325 around the %o as well or the results are undefined.
326 %o is for use in the specs for running the linker.
327 Input files whose names have no recognized suffix are not compiled
328 at all, but they are included among the output files, so they will
330 %O substitutes the suffix for object files. Note that this is
331 handled specially when it immediately follows %g, %u, or %U
332 (with or without a suffix argument) because of the need for
333 those to form complete file names. The handling is such that
334 %O is treated exactly as if it had already been substituted,
335 except that %g, %u, and %U do not currently support additional
336 SUFFIX characters following %O as they would following, for
338 %p substitutes the standard macro predefinitions for the
339 current target machine. Use this when running cpp.
340 %P like %p, but puts `__' before and after the name of each macro.
341 (Except macros that already have __.)
343 %I Substitute a -iprefix option made from GCC_EXEC_PREFIX.
344 %s current argument is the name of a library or startup file of some sort.
345 Search for that file in a standard list of directories
346 and substitute the full name found.
347 %eSTR Print STR as an error message. STR is terminated by a newline.
348 Use this when inconsistent options are detected.
349 %x{OPTION} Accumulate an option for %X.
350 %X Output the accumulated linker options specified by compilations.
351 %Y Output the accumulated assembler options specified by compilations.
352 %Z Output the accumulated preprocessor options specified by compilations.
353 %v1 Substitute the major version number of GCC.
354 (For version 2.5.3, this is 2.)
355 %v2 Substitute the minor version number of GCC.
356 (For version 2.5.3, this is 5.)
357 %v3 Substitute the patch level number of GCC.
358 (For version 2.5.3, this is 3.)
359 %a process ASM_SPEC as a spec.
360 This allows config.h to specify part of the spec for running as.
361 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
362 used here. This can be used to run a post-processor after the
363 assembler has done its job.
364 %D Dump out a -L option for each directory in startfile_prefixes.
365 If multilib_dir is set, extra entries are generated with it affixed.
366 %l process LINK_SPEC as a spec.
367 %L process LIB_SPEC as a spec.
368 %G process LIBGCC_SPEC as a spec.
369 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
370 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
371 %c process SIGNED_CHAR_SPEC as a spec.
372 %C process CPP_SPEC as a spec. A capital C is actually used here.
373 %1 process CC1_SPEC as a spec.
374 %2 process CC1PLUS_SPEC as a spec.
375 %| output "-" if the input for the current command is coming from a pipe.
376 %* substitute the variable part of a matched option. (See below.)
377 Note that each comma in the substituted string is replaced by
379 %{S} substitutes the -S switch, if that switch was given to CC.
380 If that switch was not specified, this substitutes nothing.
381 Here S is a metasyntactic variable.
382 %{S*} substitutes all the switches specified to CC whose names start
383 with -S. This is used for -o, -D, -I, etc; switches that take
384 arguments. CC considers `-o foo' as being one switch whose
385 name starts with `o'. %{o*} would substitute this text,
386 including the space; thus, two arguments would be generated.
387 %{^S*} likewise, but don't put a blank between a switch and any args.
388 %{S*:X} substitutes X if one or more switches whose names start with -S are
389 specified to CC. Note that the tail part of the -S option
390 (i.e. the part matched by the `*') will be substituted for each
391 occurrence of %* within X.
392 %{<S} remove all occurences of -S from the command line.
393 Note - this option is position dependent. % commands in the
394 spec string before this option will see -S, % commands in the
395 spec string after this option will not.
396 %{S:X} substitutes X, but only if the -S switch was given to CC.
397 %{!S:X} substitutes X, but only if the -S switch was NOT given to CC.
398 %{|S:X} like %{S:X}, but if no S switch, substitute `-'.
399 %{|!S:X} like %{!S:X}, but if there is an S switch, substitute `-'.
400 %{.S:X} substitutes X, but only if processing a file with suffix S.
401 %{!.S:X} substitutes X, but only if NOT processing a file with suffix S.
402 %{S|P:X} substitutes X if either -S or -P was given to CC. This may be
403 combined with ! and . as above binding stronger than the OR.
404 %(Spec) processes a specification defined in a specs file as *Spec:
405 %[Spec] as above, but put __ around -D arguments
407 The conditional text X in a %{S:X} or %{!S:X} construct may contain
408 other nested % constructs or spaces, or even newlines. They are
409 processed as usual, as described above.
411 The -O, -f, -m, and -W switches are handled specifically in these
412 constructs. If another value of -O or the negated form of a -f, -m, or
413 -W switch is found later in the command line, the earlier switch
414 value is ignored, except with {S*} where S is just one letter; this
415 passes all matching options.
417 The character | at the beginning of the predicate text is used to indicate
418 that a command should be piped to the following command, but only if -pipe
421 Note that it is built into CC which switches take arguments and which
422 do not. You might think it would be useful to generalize this to
423 allow each compiler's spec to say which switches take arguments. But
424 this cannot be done in a consistent fashion. CC cannot even decide
425 which input files have been specified without knowing which switches
426 take arguments, and it must know which input files to compile in order
427 to tell which compilers to run.
429 CC also knows implicitly that arguments starting in `-l' are to be
430 treated as compiler output files, and passed to the linker in their
431 proper position among the other output files. */
433 /* Define the macros used for specs %a, %l, %L, %S, %c, %C, %1. */
435 /* config.h can define ASM_SPEC to provide extra args to the assembler
436 or extra switch-translations. */
441 /* config.h can define ASM_FINAL_SPEC to run a post processor after
442 the assembler has run. */
443 #ifndef ASM_FINAL_SPEC
444 #define ASM_FINAL_SPEC ""
447 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
448 or extra switch-translations. */
453 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
454 or extra switch-translations. */
459 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
460 or extra switch-translations. */
462 #define CC1PLUS_SPEC ""
465 /* config.h can define LINK_SPEC to provide extra args to the linker
466 or extra switch-translations. */
471 /* config.h can define LIB_SPEC to override the default libraries. */
473 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
476 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
479 #if defined(LINK_LIBGCC_SPECIAL) || defined(LINK_LIBGCC_SPECIAL_1)
480 /* Have gcc do the search for libgcc.a. */
481 #define LIBGCC_SPEC "libgcc.a%s"
483 #define LIBGCC_SPEC "-lgcc"
487 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
488 #ifndef STARTFILE_SPEC
489 #define STARTFILE_SPEC \
490 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
493 /* config.h can define SWITCHES_NEED_SPACES to control which options
494 require spaces between the option and the argument. */
495 #ifndef SWITCHES_NEED_SPACES
496 #define SWITCHES_NEED_SPACES ""
499 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
501 #define ENDFILE_SPEC ""
504 /* This spec is used for telling cpp whether char is signed or not. */
505 #ifndef SIGNED_CHAR_SPEC
506 /* Use #if rather than ?:
507 because MIPS C compiler rejects like ?: in initializers. */
508 #if DEFAULT_SIGNED_CHAR
509 #define SIGNED_CHAR_SPEC "%{funsigned-char:-D__CHAR_UNSIGNED__}"
511 #define SIGNED_CHAR_SPEC "%{!fsigned-char:-D__CHAR_UNSIGNED__}"
516 #define LINKER_NAME "collect2"
519 /* Here is the spec for running the linker, after compiling all files. */
521 /* -u* was put back because both BSD and SysV seem to support it. */
522 /* %{static:} simply prevents an error message if the target machine
523 doesn't handle -static. */
524 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
525 scripts which exist in user specified directories, or in standard
527 #ifndef LINK_COMMAND_SPEC
528 #define LINK_COMMAND_SPEC "\
529 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
530 %(linker) %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r} %{s} %{t}\
531 %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
532 %{static:} %{L*} %(link_libgcc) %o %{!nostdlib:%{!nodefaultlibs:%G %L %G}}\
533 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
536 #ifndef LINK_LIBGCC_SPEC
537 # ifdef LINK_LIBGCC_SPECIAL
538 /* Don't generate -L options for startfile prefix list. */
539 # define LINK_LIBGCC_SPEC ""
541 /* Do generate them. */
542 # define LINK_LIBGCC_SPEC "%D"
546 static const char *cpp_spec = CPP_SPEC;
547 static const char *cpp_predefines = CPP_PREDEFINES;
548 static const char *cc1_spec = CC1_SPEC;
549 static const char *cc1plus_spec = CC1PLUS_SPEC;
550 static const char *signed_char_spec = SIGNED_CHAR_SPEC;
551 static const char *asm_spec = ASM_SPEC;
552 static const char *asm_final_spec = ASM_FINAL_SPEC;
553 static const char *link_spec = LINK_SPEC;
554 static const char *lib_spec = LIB_SPEC;
555 static const char *libgcc_spec = LIBGCC_SPEC;
556 static const char *endfile_spec = ENDFILE_SPEC;
557 static const char *startfile_spec = STARTFILE_SPEC;
558 static const char *switches_need_spaces = SWITCHES_NEED_SPACES;
559 static const char *linker_name_spec = LINKER_NAME;
560 static const char *link_command_spec = LINK_COMMAND_SPEC;
561 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
563 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
564 There should be no need to override these in target dependent files,
565 but we need to copy them to the specs file so that newer versions
566 of the GCC driver can correctly drive older tool chains with the
567 appropriate -B options. */
569 static const char *trad_capable_cpp =
570 "%{traditional|ftraditional|traditional-cpp:trad}cpp0";
572 static const char *cpp_options =
573 "%{C:%{!E:%eGNU C does not support -C without using -E}}\
574 %{std*} %{nostdinc*}\
575 %{C} %{v} %{A*} %{I*} %{P} %{$} %I\
576 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d} %{MG}\
577 %{!no-gcc:-D__GNUC__=%v1 -D__GNUC_MINOR__=%v2 -D__GNUC_PATCHLEVEL__=%v3}\
578 %{!undef:%{!ansi:%{!std=*:%p}%{std=gnu*:%p}} %P} %{trigraphs}\
579 %c %{Os:-D__OPTIMIZE_SIZE__} %{O*:%{!O0:-D__OPTIMIZE__}}\
580 %{ffast-math:-D__FAST_MATH__}\
581 %{fshort-wchar:-U__WCHAR_TYPE__ -D__WCHAR_TYPE__=short\\ unsigned\\ int}\
582 %{ffreestanding:-D__STDC_HOSTED__=0} %{fno-hosted:-D__STDC_HOSTED__=0}\
583 %{!ffreestanding:%{!fno-hosted:-D__STDC_HOSTED__=1}}\
584 %{fshow-column} %{fno-show-column}\
585 %{fleading-underscore} %{fno-leading-underscore}\
587 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C %{U*} %{D*} %{i*} %Z %i\
588 %{E:%W{o*}}%{M:%W{o*}}%{MM:%W{o*}}";
590 /* NB: This is shared amongst all front-ends. */
591 static const char *cc1_options =
592 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
593 %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\
594 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{std*} %{ansi}\
595 %{traditional} %{v:-version} %{pg:-p} %{p} %{f*}\
596 %{aux-info*} %{Qn:-fno-ident} %{--help:--help}\
597 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
598 %{fsyntax-only:-o %j}";
600 static const char *asm_options =
601 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
603 static const char *invoke_as =
604 "%{!S:-o %{|!pipe:%g.s} |\n as %(asm_options) %{!pipe:%g.s} %A }";
606 /* Some compilers have limits on line lengths, and the multilib_select
607 and/or multilib_matches strings can be very long, so we build them at
609 static struct obstack multilib_obstack;
610 static const char *multilib_select;
611 static const char *multilib_matches;
612 static const char *multilib_defaults;
613 static const char *multilib_exclusions;
614 #include "multilib.h"
616 /* Check whether a particular argument is a default argument. */
618 #ifndef MULTILIB_DEFAULTS
619 #define MULTILIB_DEFAULTS { "" }
622 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
626 struct user_specs *next;
627 const char *filename;
630 static struct user_specs *user_specs_head, *user_specs_tail;
632 /* This defines which switch letters take arguments. */
634 #define DEFAULT_SWITCH_TAKES_ARG(CHAR) \
635 ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o' \
636 || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u' \
637 || (CHAR) == 'I' || (CHAR) == 'm' || (CHAR) == 'x' \
638 || (CHAR) == 'L' || (CHAR) == 'A' || (CHAR) == 'V' \
639 || (CHAR) == 'B' || (CHAR) == 'b')
641 #ifndef SWITCH_TAKES_ARG
642 #define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR)
645 /* This defines which multi-letter switches take arguments. */
647 #define DEFAULT_WORD_SWITCH_TAKES_ARG(STR) \
648 (!strcmp (STR, "Tdata") || !strcmp (STR, "Ttext") \
649 || !strcmp (STR, "Tbss") || !strcmp (STR, "include") \
650 || !strcmp (STR, "imacros") || !strcmp (STR, "aux-info") \
651 || !strcmp (STR, "idirafter") || !strcmp (STR, "iprefix") \
652 || !strcmp (STR, "iwithprefix") || !strcmp (STR, "iwithprefixbefore") \
653 || !strcmp (STR, "isystem") || !strcmp (STR, "specs"))
655 #ifndef WORD_SWITCH_TAKES_ARG
656 #define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
659 #ifdef HAVE_EXECUTABLE_SUFFIX
660 /* This defines which switches stop a full compilation. */
661 #define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \
662 ((CHAR) == 'c' || (CHAR) == 'S')
664 #ifndef SWITCH_CURTAILS_COMPILATION
665 #define SWITCH_CURTAILS_COMPILATION(CHAR) \
666 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR)
670 /* Record the mapping from file suffixes for compilation specs. */
674 const char *suffix; /* Use this compiler for input files
675 whose names end in this suffix. */
677 const char *spec; /* To use this compiler, run this spec. */
680 /* Pointer to a vector of `struct compiler' that gives the spec for
681 compiling a file, based on its suffix.
682 A file that does not end in any of these suffixes will be passed
683 unchanged to the loader and nothing else will be done to it.
685 An entry containing two 0s is used to terminate the vector.
687 If multiple entries match a file, the last matching one is used. */
689 static struct compiler *compilers;
691 /* Number of entries in `compilers', not counting the null terminator. */
693 static int n_compilers;
695 /* The default list of file name suffixes and their compilation specs. */
697 static struct compiler default_compilers[] =
699 /* Add lists of suffixes of known languages here. If those languages
700 were not present when we built the driver, we will hit these copies
701 and be given a more meaningful error than "file not used since
702 linking is not done". */
703 {".m", "#Objective-C"},
704 {".cc", "#C++"}, {".cxx", "#C++"}, {".cpp", "#C++"},
705 {".c++", "#C++"}, {".C", "#C++"},
706 {".ads", "#Ada"}, {".adb", "#Ada"}, {".ada", "#Ada"},
707 {".f", "#Fortran"}, {".for", "#Fortran"}, {".F", "#Fortran"},
708 {".fpp", "#Fortran"}, {".r", "#Ratfor"},
709 {".p", "#Pascal"}, {".pas", "#Pascal"},
710 {".ch", "#Chill"}, {".chi", "#Chill"},
711 {".java", "#Java"}, {".class", "#Java"},
712 {".zip", "#Java"}, {".jar", "#Java"},
713 /* Next come the entries for C. */
717 /* cc1 has an integrated ISO C preprocessor. We should invoke the
718 external preprocessor if -save-temps or -traditional is given. */
719 "%{E|M|MM:%(trad_capable_cpp) -lang-c %{ansi:-std=c89} %(cpp_options)}\
721 %{save-temps:%(trad_capable_cpp) -lang-c %{ansi:-std=c89}\
722 %(cpp_options) %b.i \n\
723 cc1 -fpreprocessed %b.i %(cc1_options)}\
725 %{traditional|ftraditional|traditional-cpp:\
726 tradcpp0 -lang-c %{ansi:-std=c89} %(cpp_options) %{!pipe:%g.i} |\n\
727 cc1 -fpreprocessed %{!pipe:%g.i} %(cc1_options)}\
728 %{!traditional:%{!ftraditional:%{!traditional-cpp:\
729 cc1 -lang-c %{ansi:-std=c89} %(cpp_options) %(cc1_options)}}}}\
730 %{!fsyntax-only:%(invoke_as)}}}}"
731 #else /* ! USE_CPPLIB */
732 "%(trad_capable_cpp) -lang-c %{ansi:-std=c89} %(cpp_options) \
733 %{!M:%{!MM:%{!E:%{!pipe:%g.i} |\n\
734 cc1 %{!pipe:%g.i} %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}"
735 #endif /* ! USE_CPPLIB */
738 "%{!E:%e-E required when input is from standard input}\
739 %(trad_capable_cpp) -lang-c %{ansi:-std=c89} %(cpp_options)"},
742 "%{!E:%eCompilation of header file requested} \
743 %(trad_capable_cpp) -lang-c %{ansi:-std=c89} %(cpp_options)"},
744 {".i", "@cpp-output"},
746 "%{!M:%{!MM:%{!E:cc1 %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}"},
747 {".s", "@assembler"},
749 "%{!M:%{!MM:%{!E:%{!S:as %(asm_options) %i %A }}}}"},
750 {".S", "@assembler-with-cpp"},
751 {"@assembler-with-cpp",
752 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
753 %{!M:%{!MM:%{!E:%(invoke_as)}}}"},
755 /* Mark end of table */
759 /* Number of elements in default_compilers, not counting the terminator. */
761 static int n_default_compilers
762 = (sizeof default_compilers / sizeof (struct compiler)) - 1;
764 /* A vector of options to give to the linker.
765 These options are accumulated by %x,
766 and substituted into the linker command with %X. */
767 static int n_linker_options;
768 static char **linker_options;
770 /* A vector of options to give to the assembler.
771 These options are accumulated by -Wa,
772 and substituted into the assembler command with %Y. */
773 static int n_assembler_options;
774 static char **assembler_options;
776 /* A vector of options to give to the preprocessor.
777 These options are accumulated by -Wp,
778 and substituted into the preprocessor command with %Z. */
779 static int n_preprocessor_options;
780 static char **preprocessor_options;
782 /* Define how to map long options into short ones. */
784 /* This structure describes one mapping. */
787 /* The long option's name. */
789 /* The equivalent short option. */
790 const char *equivalent;
791 /* Argument info. A string of flag chars; NULL equals no options.
792 a => argument required.
793 o => argument optional.
794 j => join argument to equivalent, making one word.
795 * => require other text after NAME as an argument. */
796 const char *arg_info;
799 /* This is the table of mappings. Mappings are tried sequentially
800 for each option encountered; the first one that matches, wins. */
802 struct option_map option_map[] =
804 {"--all-warnings", "-Wall", 0},
805 {"--ansi", "-ansi", 0},
806 {"--assemble", "-S", 0},
807 {"--assert", "-A", "a"},
808 {"--classpath", "-fclasspath=", "aj"},
809 {"--CLASSPATH", "-fCLASSPATH=", "aj"},
810 {"--comments", "-C", 0},
811 {"--compile", "-c", 0},
812 {"--debug", "-g", "oj"},
813 {"--define-macro", "-D", "aj"},
814 {"--dependencies", "-M", 0},
815 {"--dump", "-d", "a"},
816 {"--dumpbase", "-dumpbase", "a"},
817 {"--entry", "-e", 0},
818 {"--extra-warnings", "-W", 0},
819 {"--for-assembler", "-Wa", "a"},
820 {"--for-linker", "-Xlinker", "a"},
821 {"--force-link", "-u", "a"},
822 {"--imacros", "-imacros", "a"},
823 {"--include", "-include", "a"},
824 {"--include-barrier", "-I-", 0},
825 {"--include-directory", "-I", "aj"},
826 {"--include-directory-after", "-idirafter", "a"},
827 {"--include-prefix", "-iprefix", "a"},
828 {"--include-with-prefix", "-iwithprefix", "a"},
829 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
830 {"--include-with-prefix-after", "-iwithprefix", "a"},
831 {"--language", "-x", "a"},
832 {"--library-directory", "-L", "a"},
833 {"--machine", "-m", "aj"},
834 {"--machine-", "-m", "*j"},
835 {"--no-line-commands", "-P", 0},
836 {"--no-precompiled-includes", "-noprecomp", 0},
837 {"--no-standard-includes", "-nostdinc", 0},
838 {"--no-standard-libraries", "-nostdlib", 0},
839 {"--no-warnings", "-w", 0},
840 {"--optimize", "-O", "oj"},
841 {"--output", "-o", "a"},
842 {"--output-class-directory", "-foutput-class-dir=", "ja"},
843 {"--pedantic", "-pedantic", 0},
844 {"--pedantic-errors", "-pedantic-errors", 0},
845 {"--pipe", "-pipe", 0},
846 {"--prefix", "-B", "a"},
847 {"--preprocess", "-E", 0},
848 {"--print-search-dirs", "-print-search-dirs", 0},
849 {"--print-file-name", "-print-file-name=", "aj"},
850 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
851 {"--print-missing-file-dependencies", "-MG", 0},
852 {"--print-multi-lib", "-print-multi-lib", 0},
853 {"--print-multi-directory", "-print-multi-directory", 0},
854 {"--print-prog-name", "-print-prog-name=", "aj"},
855 {"--profile", "-p", 0},
856 {"--profile-blocks", "-a", 0},
857 {"--quiet", "-q", 0},
858 {"--save-temps", "-save-temps", 0},
859 {"--shared", "-shared", 0},
860 {"--silent", "-q", 0},
861 {"--specs", "-specs=", "aj"},
862 {"--static", "-static", 0},
863 {"--std", "-std=", "aj"},
864 {"--symbolic", "-symbolic", 0},
865 {"--target", "-b", "a"},
866 {"--time", "-time", 0},
867 {"--trace-includes", "-H", 0},
868 {"--traditional", "-traditional", 0},
869 {"--traditional-cpp", "-traditional-cpp", 0},
870 {"--trigraphs", "-trigraphs", 0},
871 {"--undefine-macro", "-U", "aj"},
872 {"--use-version", "-V", "a"},
873 {"--user-dependencies", "-MM", 0},
874 {"--verbose", "-v", 0},
875 {"--version", "-dumpversion", 0},
876 {"--warn-", "-W", "*j"},
877 {"--write-dependencies", "-MD", 0},
878 {"--write-user-dependencies", "-MMD", 0},
882 /* Translate the options described by *ARGCP and *ARGVP.
883 Make a new vector and store it back in *ARGVP,
884 and store its length in *ARGVC. */
887 translate_options (argcp, argvp)
889 const char *const **argvp;
893 const char *const *argv = *argvp;
895 (const char **) xmalloc ((argc + 2) * 2 * sizeof (const char *));
899 newv[newindex++] = argv[i++];
903 /* Translate -- options. */
904 if (argv[i][0] == '-' && argv[i][1] == '-')
907 /* Find a mapping that applies to this option. */
908 for (j = 0; j < ARRAY_SIZE (option_map); j++)
910 size_t optlen = strlen (option_map[j].name);
911 size_t arglen = strlen (argv[i]);
912 size_t complen = arglen > optlen ? optlen : arglen;
913 const char *arginfo = option_map[j].arg_info;
918 if (!strncmp (argv[i], option_map[j].name, complen))
925 for (k = j + 1; k < ARRAY_SIZE (option_map); k++)
926 if (strlen (option_map[k].name) >= arglen
927 && !strncmp (argv[i], option_map[k].name, arglen))
929 error ("Ambiguous abbreviation %s", argv[i]);
933 if (k != ARRAY_SIZE (option_map))
939 /* If the option has an argument, accept that. */
940 if (argv[i][optlen] == '=')
941 arg = argv[i] + optlen + 1;
943 /* If this mapping requires extra text at end of name,
944 accept that as "argument". */
945 else if (index (arginfo, '*') != 0)
946 arg = argv[i] + optlen;
948 /* Otherwise, extra text at end means mismatch.
949 Try other mappings. */
954 else if (index (arginfo, '*') != 0)
956 error ("Incomplete `%s' option", option_map[j].name);
960 /* Handle arguments. */
961 if (index (arginfo, 'a') != 0)
967 error ("Missing argument to `%s' option",
975 else if (index (arginfo, '*') != 0)
977 else if (index (arginfo, 'o') == 0)
980 error ("Extraneous argument to `%s' option",
985 /* Store the translation as one argv elt or as two. */
986 if (arg != 0 && index (arginfo, 'j') != 0)
987 newv[newindex++] = concat (option_map[j].equivalent, arg,
991 newv[newindex++] = option_map[j].equivalent;
992 newv[newindex++] = arg;
995 newv[newindex++] = option_map[j].equivalent;
1003 /* Handle old-fashioned options--just copy them through,
1004 with their arguments. */
1005 else if (argv[i][0] == '-')
1007 const char *p = argv[i] + 1;
1011 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
1012 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
1013 else if (WORD_SWITCH_TAKES_ARG (p))
1014 nskip += WORD_SWITCH_TAKES_ARG (p);
1015 else if ((c == 'B' || c == 'b' || c == 'V' || c == 'x')
1018 else if (! strcmp (p, "Xlinker"))
1021 /* Watch out for an option at the end of the command line that
1022 is missing arguments, and avoid skipping past the end of the
1024 if (nskip + i > argc)
1029 newv[newindex++] = argv[i++];
1034 /* Ordinary operands, or +e options. */
1035 newv[newindex++] = argv[i++];
1050 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1051 be considered whitespace. */
1052 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1054 else if (*p == '\n' || *p == ' ' || *p == '\t')
1068 /* Structures to keep track of prefixes to try when looking for files. */
1072 char *prefix; /* String to prepend to the path. */
1073 struct prefix_list *next; /* Next in linked list. */
1074 int require_machine_suffix; /* Don't use without machine_suffix. */
1075 /* 2 means try both machine_suffix and just_machine_suffix. */
1076 int *used_flag_ptr; /* 1 if a file was found with this prefix. */
1077 int priority; /* Sort key - priority within list */
1082 struct prefix_list *plist; /* List of prefixes to try */
1083 int max_len; /* Max length of a prefix in PLIST */
1084 const char *name; /* Name of this list (used in config stuff) */
1087 /* List of prefixes to try when looking for executables. */
1089 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1091 /* List of prefixes to try when looking for startup (crt0) files. */
1093 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1095 /* List of prefixes to try when looking for include files. */
1097 static struct path_prefix include_prefixes = { 0, 0, "include" };
1099 /* Suffix to attach to directories searched for commands.
1100 This looks like `MACHINE/VERSION/'. */
1102 static const char *machine_suffix = 0;
1104 /* Suffix to attach to directories searched for commands.
1105 This is just `MACHINE/'. */
1107 static const char *just_machine_suffix = 0;
1109 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1111 static const char *gcc_exec_prefix;
1113 /* Default prefixes to attach to command names. */
1115 #ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */
1116 #undef MD_EXEC_PREFIX
1117 #undef MD_STARTFILE_PREFIX
1118 #undef MD_STARTFILE_PREFIX_1
1121 /* If no prefixes defined, use the null string, which will disable them. */
1122 #ifndef MD_EXEC_PREFIX
1123 #define MD_EXEC_PREFIX ""
1125 #ifndef MD_STARTFILE_PREFIX
1126 #define MD_STARTFILE_PREFIX ""
1128 #ifndef MD_STARTFILE_PREFIX_1
1129 #define MD_STARTFILE_PREFIX_1 ""
1132 /* Supply defaults for the standard prefixes. */
1134 #ifndef STANDARD_EXEC_PREFIX
1135 #define STANDARD_EXEC_PREFIX "/usr/local/lib/gcc-lib/"
1137 #ifndef STANDARD_STARTFILE_PREFIX
1138 #define STANDARD_STARTFILE_PREFIX "/usr/local/lib/"
1140 #ifndef TOOLDIR_BASE_PREFIX
1141 #define TOOLDIR_BASE_PREFIX "/usr/local/"
1143 #ifndef STANDARD_BINDIR_PREFIX
1144 #define STANDARD_BINDIR_PREFIX "/usr/local/bin"
1147 static const char *standard_exec_prefix = STANDARD_EXEC_PREFIX;
1148 static const char *standard_exec_prefix_1 = "/usr/lib/gcc/";
1149 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1151 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1152 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1153 static const char *standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1154 static const char *standard_startfile_prefix_1 = "/lib/";
1155 static const char *standard_startfile_prefix_2 = "/usr/lib/";
1157 static const char *tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1158 static const char *tooldir_prefix;
1160 static const char *standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1162 /* Subdirectory to use for locating libraries. Set by
1163 set_multilib_dir based on the compilation options. */
1165 static const char *multilib_dir;
1167 /* Structure to keep track of the specs that have been defined so far.
1168 These are accessed using %(specname) or %[specname] in a compiler
1173 /* The following 2 fields must be first */
1174 /* to allow EXTRA_SPECS to be initialized */
1175 const char *name; /* name of the spec. */
1176 const char *ptr; /* available ptr if no static pointer */
1178 /* The following fields are not initialized */
1179 /* by EXTRA_SPECS */
1180 const char **ptr_spec; /* pointer to the spec itself. */
1181 struct spec_list *next; /* Next spec in linked list. */
1182 int name_len; /* length of the name */
1183 int alloc_p; /* whether string was allocated */
1186 #define INIT_STATIC_SPEC(NAME,PTR) \
1187 { NAME, NULL_PTR, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1189 /* List of statically defined specs. */
1190 static struct spec_list static_specs[] =
1192 INIT_STATIC_SPEC ("asm", &asm_spec),
1193 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1194 INIT_STATIC_SPEC ("asm_options", &asm_options),
1195 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1196 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1197 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1198 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1199 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1200 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1201 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1202 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1203 INIT_STATIC_SPEC ("link", &link_spec),
1204 INIT_STATIC_SPEC ("lib", &lib_spec),
1205 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1206 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1207 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces),
1208 INIT_STATIC_SPEC ("signed_char", &signed_char_spec),
1209 INIT_STATIC_SPEC ("predefines", &cpp_predefines),
1210 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1211 INIT_STATIC_SPEC ("version", &compiler_version),
1212 INIT_STATIC_SPEC ("multilib", &multilib_select),
1213 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1214 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1215 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1216 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1217 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1218 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1219 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1220 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1221 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1224 #ifdef EXTRA_SPECS /* additional specs needed */
1225 /* Structure to keep track of just the first two args of a spec_list.
1226 That is all that the EXTRA_SPECS macro gives us. */
1233 static struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1234 static struct spec_list *extra_specs = (struct spec_list *) 0;
1237 /* List of dynamically allocates specs that have been defined so far. */
1239 static struct spec_list *specs = (struct spec_list *) 0;
1241 /* Initialize the specs lookup routines. */
1246 struct spec_list *next = (struct spec_list *) 0;
1247 struct spec_list *sl = (struct spec_list *) 0;
1251 return; /* Already initialized. */
1254 notice ("Using builtin specs.\n");
1257 extra_specs = (struct spec_list *)
1258 xcalloc (sizeof (struct spec_list), ARRAY_SIZE (extra_specs_1));
1260 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1262 sl = &extra_specs[i];
1263 sl->name = extra_specs_1[i].name;
1264 sl->ptr = extra_specs_1[i].ptr;
1266 sl->name_len = strlen (sl->name);
1267 sl->ptr_spec = &sl->ptr;
1272 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1274 sl = &static_specs[i];
1282 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1283 removed; If the spec starts with a + then SPEC is added to the end of the
1287 set_spec (name, spec)
1291 struct spec_list *sl;
1292 const char *old_spec;
1293 int name_len = strlen (name);
1296 /* If this is the first call, initialize the statically allocated specs. */
1299 struct spec_list *next = (struct spec_list *) 0;
1300 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1302 sl = &static_specs[i];
1309 /* See if the spec already exists. */
1310 for (sl = specs; sl; sl = sl->next)
1311 if (name_len == sl->name_len && !strcmp (sl->name, name))
1316 /* Not found - make it. */
1317 sl = (struct spec_list *) xmalloc (sizeof (struct spec_list));
1318 sl->name = xstrdup (name);
1319 sl->name_len = name_len;
1320 sl->ptr_spec = &sl->ptr;
1322 *(sl->ptr_spec) = "";
1327 old_spec = *(sl->ptr_spec);
1328 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1329 ? concat (old_spec, spec + 1, NULL_PTR)
1334 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1337 /* Free the old spec. */
1338 if (old_spec && sl->alloc_p)
1339 free ((PTR) old_spec);
1344 /* Accumulate a command (program name and args), and run it. */
1346 /* Vector of pointers to arguments in the current line of specifications. */
1348 static const char **argbuf;
1350 /* Number of elements allocated in argbuf. */
1352 static int argbuf_length;
1354 /* Number of elements in argbuf currently in use (containing args). */
1356 static int argbuf_index;
1358 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1359 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1362 static struct temp_name {
1363 const char *suffix; /* suffix associated with the code. */
1364 int length; /* strlen (suffix). */
1365 int unique; /* Indicates whether %g or %u/%U was used. */
1366 const char *filename; /* associated filename. */
1367 int filename_length; /* strlen (filename). */
1368 struct temp_name *next;
1371 /* Number of commands executed so far. */
1373 static int execution_count;
1375 /* Number of commands that exited with a signal. */
1377 static int signal_count;
1379 /* Name with which this program was invoked. */
1381 static const char *programname;
1383 /* Clear out the vector of arguments (after a command is executed). */
1391 /* Add one argument to the vector at the end.
1392 This is done when a space is seen or at the end of the line.
1393 If DELETE_ALWAYS is nonzero, the arg is a filename
1394 and the file should be deleted eventually.
1395 If DELETE_FAILURE is nonzero, the arg is a filename
1396 and the file should be deleted if this compilation fails. */
1399 store_arg (arg, delete_always, delete_failure)
1401 int delete_always, delete_failure;
1403 if (argbuf_index + 1 == argbuf_length)
1405 = (const char **) xrealloc (argbuf,
1406 (argbuf_length *= 2) * sizeof (const char *));
1408 argbuf[argbuf_index++] = arg;
1409 argbuf[argbuf_index] = 0;
1411 if (delete_always || delete_failure)
1412 record_temp_file (arg, delete_always, delete_failure);
1415 /* Load specs from a file name named FILENAME, replacing occurances of
1416 various different types of line-endings, \r\n, \n\r and just \r, with
1420 load_specs (filename)
1421 const char *filename;
1425 struct stat statbuf;
1432 notice ("Reading specs from %s\n", filename);
1434 /* Open and stat the file. */
1435 desc = open (filename, O_RDONLY, 0);
1437 pfatal_with_name (filename);
1438 if (stat (filename, &statbuf) < 0)
1439 pfatal_with_name (filename);
1441 /* Read contents of file into BUFFER. */
1442 buffer = xmalloc ((unsigned) statbuf.st_size + 1);
1443 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1445 pfatal_with_name (filename);
1446 buffer[readlen] = 0;
1449 specs = xmalloc (readlen + 1);
1451 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1457 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1459 else if (*(buffer_p + 1) == '\n') /* \r\n */
1473 /* Read compilation specs from a file named FILENAME,
1474 replacing the default ones.
1476 A suffix which starts with `*' is a definition for
1477 one of the machine-specific sub-specs. The "suffix" should be
1478 *asm, *cc1, *cpp, *link, *startfile, *signed_char, etc.
1479 The corresponding spec is stored in asm_spec, etc.,
1480 rather than in the `compilers' vector.
1482 Anything invalid in the file is a fatal error. */
1485 read_specs (filename, main_p)
1486 const char *filename;
1492 buffer = load_specs (filename);
1494 /* Scan BUFFER for specs, putting them in the vector. */
1500 char *in, *out, *p1, *p2, *p3;
1502 /* Advance P in BUFFER to the next nonblank nocomment line. */
1503 p = skip_whitespace (p);
1507 /* Is this a special command that starts with '%'? */
1508 /* Don't allow this for the main specs file, since it would
1509 encourage people to overwrite it. */
1510 if (*p == '%' && !main_p)
1513 while (*p && *p != '\n')
1519 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1520 && (p1[sizeof "%include" - 1] == ' '
1521 || p1[sizeof "%include" - 1] == '\t'))
1525 p1 += sizeof ("%include");
1526 while (*p1 == ' ' || *p1 == '\t')
1529 if (*p1++ != '<' || p[-2] != '>')
1530 fatal ("specs %%include syntax malformed after %ld characters",
1531 (long) (p1 - buffer + 1));
1534 new_filename = find_a_file (&startfile_prefixes, p1, R_OK);
1535 read_specs (new_filename ? new_filename : p1, FALSE);
1538 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1539 && (p1[sizeof "%include_noerr" - 1] == ' '
1540 || p1[sizeof "%include_noerr" - 1] == '\t'))
1544 p1 += sizeof "%include_noerr";
1545 while (*p1 == ' ' || *p1 == '\t')
1548 if (*p1++ != '<' || p[-2] != '>')
1549 fatal ("specs %%include syntax malformed after %ld characters",
1550 (long) (p1 - buffer + 1));
1553 new_filename = find_a_file (&startfile_prefixes, p1, R_OK);
1555 read_specs (new_filename, FALSE);
1556 else if (verbose_flag)
1557 notice ("Could not find specs file %s\n", p1);
1560 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1561 && (p1[sizeof "%rename" - 1] == ' '
1562 || p1[sizeof "%rename" - 1] == '\t'))
1565 struct spec_list *sl;
1567 /* Get original name */
1568 p1 += sizeof "%rename";
1569 while (*p1 == ' ' || *p1 == '\t')
1572 if (! ISALPHA ((unsigned char) *p1))
1573 fatal ("specs %%rename syntax malformed after %ld characters",
1574 (long) (p1 - buffer));
1577 while (*p2 && !ISSPACE ((unsigned char) *p2))
1580 if (*p2 != ' ' && *p2 != '\t')
1581 fatal ("specs %%rename syntax malformed after %ld characters",
1582 (long) (p2 - buffer));
1586 while (*p2 == ' ' || *p2 == '\t')
1589 if (! ISALPHA ((unsigned char) *p2))
1590 fatal ("specs %%rename syntax malformed after %ld characters",
1591 (long) (p2 - buffer));
1593 /* Get new spec name. */
1595 while (*p3 && !ISSPACE ((unsigned char) *p3))
1599 fatal ("specs %%rename syntax malformed after %ld characters",
1600 (long) (p3 - buffer));
1603 for (sl = specs; sl; sl = sl->next)
1604 if (name_len == sl->name_len && !strcmp (sl->name, p1))
1608 fatal ("specs %s spec was not found to be renamed", p1);
1610 if (strcmp (p1, p2) == 0)
1615 notice ("rename spec %s to %s\n", p1, p2);
1617 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
1621 set_spec (p2, *(sl->ptr_spec));
1623 free ((PTR) *(sl->ptr_spec));
1625 *(sl->ptr_spec) = "";
1630 fatal ("specs unknown %% command after %ld characters",
1631 (long) (p1 - buffer));
1634 /* Find the colon that should end the suffix. */
1636 while (*p1 && *p1 != ':' && *p1 != '\n')
1639 /* The colon shouldn't be missing. */
1641 fatal ("specs file malformed after %ld characters",
1642 (long) (p1 - buffer));
1644 /* Skip back over trailing whitespace. */
1646 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
1649 /* Copy the suffix to a string. */
1650 suffix = save_string (p, p2 - p);
1651 /* Find the next line. */
1652 p = skip_whitespace (p1 + 1);
1654 fatal ("specs file malformed after %ld characters",
1655 (long) (p - buffer));
1658 /* Find next blank line or end of string. */
1659 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
1662 /* Specs end at the blank line and do not include the newline. */
1663 spec = save_string (p, p1 - p);
1666 /* Delete backslash-newline sequences from the spec. */
1671 if (in[0] == '\\' && in[1] == '\n')
1673 else if (in[0] == '#')
1674 while (*in && *in != '\n')
1682 if (suffix[0] == '*')
1684 if (! strcmp (suffix, "*link_command"))
1685 link_command_spec = spec;
1687 set_spec (suffix + 1, spec);
1691 /* Add this pair to the vector. */
1693 = ((struct compiler *)
1694 xrealloc (compilers,
1695 (n_compilers + 2) * sizeof (struct compiler)));
1697 compilers[n_compilers].suffix = suffix;
1698 compilers[n_compilers].spec = spec;
1700 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
1704 link_command_spec = spec;
1707 if (link_command_spec == 0)
1708 fatal ("spec file has no spec for linking");
1711 /* Record the names of temporary files we tell compilers to write,
1712 and delete them at the end of the run. */
1714 /* This is the common prefix we use to make temp file names.
1715 It is chosen once for each run of this program.
1716 It is substituted into a spec by %g or %j.
1717 Thus, all temp file names contain this prefix.
1718 In practice, all temp file names start with this prefix.
1720 This prefix comes from the envvar TMPDIR if it is defined;
1721 otherwise, from the P_tmpdir macro if that is defined;
1722 otherwise, in /usr/tmp or /tmp;
1723 or finally the current directory if all else fails. */
1725 static const char *temp_filename;
1727 /* Length of the prefix. */
1729 static int temp_filename_length;
1731 /* Define the list of temporary files to delete. */
1736 struct temp_file *next;
1739 /* Queue of files to delete on success or failure of compilation. */
1740 static struct temp_file *always_delete_queue;
1741 /* Queue of files to delete on failure of compilation. */
1742 static struct temp_file *failure_delete_queue;
1744 /* Record FILENAME as a file to be deleted automatically.
1745 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
1746 otherwise delete it in any case.
1747 FAIL_DELETE nonzero means delete it if a compilation step fails;
1748 otherwise delete it in any case. */
1751 record_temp_file (filename, always_delete, fail_delete)
1752 const char *filename;
1756 register char *const name = xstrdup (filename);
1760 register struct temp_file *temp;
1761 for (temp = always_delete_queue; temp; temp = temp->next)
1762 if (! strcmp (name, temp->name))
1765 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
1766 temp->next = always_delete_queue;
1768 always_delete_queue = temp;
1775 register struct temp_file *temp;
1776 for (temp = failure_delete_queue; temp; temp = temp->next)
1777 if (! strcmp (name, temp->name))
1780 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
1781 temp->next = failure_delete_queue;
1783 failure_delete_queue = temp;
1789 /* Delete all the temporary files whose names we previously recorded. */
1792 delete_if_ordinary (name)
1799 printf ("Delete %s? (y or n) ", name);
1803 while ((c = getchar ()) != '\n' && c != EOF)
1806 if (i == 'y' || i == 'Y')
1808 if (stat (name, &st) >= 0 && S_ISREG (st.st_mode))
1809 if (unlink (name) < 0)
1811 perror_with_name (name);
1815 delete_temp_files ()
1817 register struct temp_file *temp;
1819 for (temp = always_delete_queue; temp; temp = temp->next)
1820 delete_if_ordinary (temp->name);
1821 always_delete_queue = 0;
1824 /* Delete all the files to be deleted on error. */
1827 delete_failure_queue ()
1829 register struct temp_file *temp;
1831 for (temp = failure_delete_queue; temp; temp = temp->next)
1832 delete_if_ordinary (temp->name);
1836 clear_failure_queue ()
1838 failure_delete_queue = 0;
1841 /* Routine to add variables to the environment. We do this to pass
1842 the pathname of the gcc driver, and the directories search to the
1843 collect2 program, which is being run as ld. This way, we can be
1844 sure of executing the right compiler when collect2 wants to build
1845 constructors and destructors. Since the environment variables we
1846 use come from an obstack, we don't have to worry about allocating
1855 #ifndef VMS /* nor about VMS */
1857 extern char **environ;
1858 char **old_environ = environ;
1862 int str_len = strlen (str);
1866 while ((ch = *p++) != '\0' && ch != '=')
1872 /* Search for replacing an existing environment variable, and
1873 count the number of total environment variables. */
1874 for (envp = old_environ; *envp; envp++)
1877 if (!strncmp (str, *envp, name_len))
1884 /* Add a new environment variable */
1885 environ = (char **) xmalloc (sizeof (char *) * (num_envs + 2));
1887 memcpy ((char *) (environ + 1), (char *) old_environ,
1888 sizeof (char *) * (num_envs + 1));
1893 #endif /* HAVE_PUTENV */
1895 /* Build a list of search directories from PATHS.
1896 PREFIX is a string to prepend to the list.
1897 If CHECK_DIR_P is non-zero we ensure the directory exists.
1898 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
1899 It is also used by the --print-search-dirs flag. */
1902 build_search_list (paths, prefix, check_dir_p)
1903 struct path_prefix *paths;
1907 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0;
1909 = (just_machine_suffix) ? strlen (just_machine_suffix) : 0;
1910 int first_time = TRUE;
1911 struct prefix_list *pprefix;
1913 obstack_grow (&collect_obstack, prefix, strlen (prefix));
1914 obstack_1grow (&collect_obstack, '=');
1916 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next)
1918 int len = strlen (pprefix->prefix);
1922 || is_directory (pprefix->prefix, machine_suffix, 0)))
1925 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
1928 obstack_grow (&collect_obstack, pprefix->prefix, len);
1929 obstack_grow (&collect_obstack, machine_suffix, suffix_len);
1932 if (just_machine_suffix
1933 && pprefix->require_machine_suffix == 2
1935 || is_directory (pprefix->prefix, just_machine_suffix, 0)))
1938 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
1941 obstack_grow (&collect_obstack, pprefix->prefix, len);
1942 obstack_grow (&collect_obstack, just_machine_suffix,
1946 if (! pprefix->require_machine_suffix)
1949 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
1952 obstack_grow (&collect_obstack, pprefix->prefix, len);
1956 obstack_1grow (&collect_obstack, '\0');
1957 return obstack_finish (&collect_obstack);
1960 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
1964 putenv_from_prefixes (paths, env_var)
1965 struct path_prefix *paths;
1966 const char *env_var;
1968 putenv (build_search_list (paths, env_var, 1));
1973 /* FIXME: the location independence code for VMS is hairier than this,
1974 and hasn't been written. */
1976 /* Split a filename into component directories. */
1979 split_directories (name, ptr_num_dirs)
1988 /* Count the number of directories. Special case MSDOS disk names as part
1989 of the initial directory. */
1991 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
1992 if (name[1] == ':' && IS_DIR_SEPARATOR (name[2]))
1997 #endif /* HAVE_DOS_BASED_FILE_SYSTEM */
1999 while ((ch = *p++) != '\0')
2001 if (IS_DIR_SEPARATOR (ch))
2004 while (IS_DIR_SEPARATOR (*p))
2009 dirs = (char **) xmalloc (sizeof (char *) * (num_dirs + 2));
2011 /* Now copy the directory parts. */
2014 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2015 if (name[1] == ':' && IS_DIR_SEPARATOR (name[2]))
2017 dirs[num_dirs++] = save_string (p, 3);
2020 #endif /* HAVE_DOS_BASED_FILE_SYSTEM */
2023 while ((ch = *p++) != '\0')
2025 if (IS_DIR_SEPARATOR (ch))
2027 while (IS_DIR_SEPARATOR (*p))
2030 dirs[num_dirs++] = save_string (q, p - q);
2036 dirs[num_dirs++] = save_string (q, p - 1 - q);
2038 dirs[num_dirs] = NULL_PTR;
2040 *ptr_num_dirs = num_dirs;
2045 /* Release storage held by split directories. */
2048 free_split_directories (dirs)
2053 while (dirs[i] != NULL_PTR)
2056 free ((char *) dirs);
2059 /* Given three strings PROGNAME, BIN_PREFIX, PREFIX, return a string that gets
2060 to PREFIX starting with the directory portion of PROGNAME and a relative
2061 pathname of the difference between BIN_PREFIX and PREFIX.
2063 For example, if BIN_PREFIX is /alpha/beta/gamma/gcc/delta, PREFIX is
2064 /alpha/beta/gamma/omega/, and PROGNAME is /red/green/blue/gcc, then this
2065 function will return /red/green/blue/../omega.
2067 If no relative prefix can be found, return NULL. */
2070 make_relative_prefix (progname, bin_prefix, prefix)
2071 const char *progname;
2072 const char *bin_prefix;
2075 char **prog_dirs, **bin_dirs, **prefix_dirs;
2076 int prog_num, bin_num, prefix_num, std_loc_p;
2079 prog_dirs = split_directories (progname, &prog_num);
2080 bin_dirs = split_directories (bin_prefix, &bin_num);
2082 /* If there is no full pathname, try to find the program by checking in each
2083 of the directories specified in the PATH environment variable. */
2088 GET_ENV_PATH_LIST (temp, "PATH");
2091 char *startp, *endp;
2092 char *nstore = (char *) alloca (strlen (temp) + strlen (progname) + 1);
2094 startp = endp = temp;
2097 if (*endp == PATH_SEPARATOR || *endp == 0)
2102 nstore[1] = DIR_SEPARATOR;
2107 strncpy (nstore, startp, endp - startp);
2108 if (! IS_DIR_SEPARATOR (endp[-1]))
2110 nstore[endp - startp] = DIR_SEPARATOR;
2111 nstore[endp - startp + 1] = 0;
2114 nstore[endp - startp] = 0;
2116 strcat (nstore, progname);
2117 if (! access (nstore, X_OK)
2118 #ifdef HAVE_EXECUTABLE_SUFFIX
2119 || ! access (strcat (nstore, EXECUTABLE_SUFFIX), X_OK)
2123 free_split_directories (prog_dirs);
2125 prog_dirs = split_directories (progname, &prog_num);
2131 endp = startp = endp + 1;
2139 /* Remove the program name from comparison of directory names. */
2142 /* Determine if the compiler is installed in the standard location, and if
2143 so, we don't need to specify relative directories. Also, if argv[0]
2144 doesn't contain any directory specifiers, there is not much we can do. */
2146 if (prog_num == bin_num)
2148 for (i = 0; i < bin_num; i++)
2150 if (strcmp (prog_dirs[i], bin_dirs[i]) != 0)
2154 if (prog_num <= 0 || i == bin_num)
2157 free_split_directories (prog_dirs);
2158 free_split_directories (bin_dirs);
2159 prog_dirs = bin_dirs = (char **) 0;
2164 prefix_dirs = split_directories (prefix, &prefix_num);
2166 /* Find how many directories are in common between bin_prefix & prefix. */
2167 n = (prefix_num < bin_num) ? prefix_num : bin_num;
2168 for (common = 0; common < n; common++)
2170 if (strcmp (bin_dirs[common], prefix_dirs[common]) != 0)
2174 /* If there are no common directories, there can be no relative prefix. */
2177 free_split_directories (prog_dirs);
2178 free_split_directories (bin_dirs);
2179 free_split_directories (prefix_dirs);
2183 /* Build up the pathnames in argv[0]. */
2184 for (i = 0; i < prog_num; i++)
2185 obstack_grow (&obstack, prog_dirs[i], strlen (prog_dirs[i]));
2187 /* Now build up the ..'s. */
2188 for (i = common; i < n; i++)
2190 obstack_grow (&obstack, DIR_UP, sizeof (DIR_UP) - 1);
2191 obstack_1grow (&obstack, DIR_SEPARATOR);
2194 /* Put in directories to move over to prefix. */
2195 for (i = common; i < prefix_num; i++)
2196 obstack_grow (&obstack, prefix_dirs[i], strlen (prefix_dirs[i]));
2198 free_split_directories (prog_dirs);
2199 free_split_directories (bin_dirs);
2200 free_split_directories (prefix_dirs);
2202 obstack_1grow (&obstack, '\0');
2203 return obstack_finish (&obstack);
2207 /* Check whether NAME can be accessed in MODE. This is like access,
2208 except that it never considers directories to be executable. */
2211 access_check (name, mode)
2219 if (stat (name, &st) < 0
2220 || S_ISDIR (st.st_mode))
2224 return access (name, mode);
2227 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2228 access to check permissions.
2229 Return 0 if not found, otherwise return its name, allocated with malloc. */
2232 find_a_file (pprefix, name, mode)
2233 struct path_prefix *pprefix;
2238 const char *file_suffix = ((mode & X_OK) != 0 ? EXECUTABLE_SUFFIX : "");
2239 struct prefix_list *pl;
2240 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1;
2242 #ifdef DEFAULT_ASSEMBLER
2243 if (! strcmp(name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2244 return xstrdup (DEFAULT_ASSEMBLER);
2247 #ifdef DEFAULT_LINKER
2248 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2249 return xstrdup (DEFAULT_LINKER);
2253 len += strlen (machine_suffix);
2255 temp = xmalloc (len);
2257 /* Determine the filename to execute (special case for absolute paths). */
2259 if (IS_DIR_SEPARATOR (*name)
2260 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2261 /* Check for disk name on MS-DOS-based systems. */
2262 || (name[0] && name[1] == ':' && IS_DIR_SEPARATOR (name[2]))
2266 if (access (name, mode) == 0)
2268 strcpy (temp, name);
2273 for (pl = pprefix->plist; pl; pl = pl->next)
2277 /* Some systems have a suffix for executable files.
2278 So try appending that first. */
2279 if (file_suffix[0] != 0)
2281 strcpy (temp, pl->prefix);
2282 strcat (temp, machine_suffix);
2283 strcat (temp, name);
2284 strcat (temp, file_suffix);
2285 if (access_check (temp, mode) == 0)
2287 if (pl->used_flag_ptr != 0)
2288 *pl->used_flag_ptr = 1;
2293 /* Now try just the name. */
2294 strcpy (temp, pl->prefix);
2295 strcat (temp, machine_suffix);
2296 strcat (temp, name);
2297 if (access_check (temp, mode) == 0)
2299 if (pl->used_flag_ptr != 0)
2300 *pl->used_flag_ptr = 1;
2305 /* Certain prefixes are tried with just the machine type,
2306 not the version. This is used for finding as, ld, etc. */
2307 if (just_machine_suffix && pl->require_machine_suffix == 2)
2309 /* Some systems have a suffix for executable files.
2310 So try appending that first. */
2311 if (file_suffix[0] != 0)
2313 strcpy (temp, pl->prefix);
2314 strcat (temp, just_machine_suffix);
2315 strcat (temp, name);
2316 strcat (temp, file_suffix);
2317 if (access_check (temp, mode) == 0)
2319 if (pl->used_flag_ptr != 0)
2320 *pl->used_flag_ptr = 1;
2325 strcpy (temp, pl->prefix);
2326 strcat (temp, just_machine_suffix);
2327 strcat (temp, name);
2328 if (access_check (temp, mode) == 0)
2330 if (pl->used_flag_ptr != 0)
2331 *pl->used_flag_ptr = 1;
2336 /* Certain prefixes can't be used without the machine suffix
2337 when the machine or version is explicitly specified. */
2338 if (! pl->require_machine_suffix)
2340 /* Some systems have a suffix for executable files.
2341 So try appending that first. */
2342 if (file_suffix[0] != 0)
2344 strcpy (temp, pl->prefix);
2345 strcat (temp, name);
2346 strcat (temp, file_suffix);
2347 if (access_check (temp, mode) == 0)
2349 if (pl->used_flag_ptr != 0)
2350 *pl->used_flag_ptr = 1;
2355 strcpy (temp, pl->prefix);
2356 strcat (temp, name);
2357 if (access_check (temp, mode) == 0)
2359 if (pl->used_flag_ptr != 0)
2360 *pl->used_flag_ptr = 1;
2370 /* Ranking of prefixes in the sort list. -B prefixes are put before
2373 enum path_prefix_priority
2375 PREFIX_PRIORITY_B_OPT,
2376 PREFIX_PRIORITY_LAST
2379 /* Add an entry for PREFIX in PLIST. The PLIST is kept in assending
2380 order according to PRIORITY. Within each PRIORITY, new entries are
2383 If WARN is nonzero, we will warn if no file is found
2384 through this prefix. WARN should point to an int
2385 which will be set to 1 if this entry is used.
2387 COMPONENT is the value to be passed to update_path.
2389 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2390 the complete value of machine_suffix.
2391 2 means try both machine_suffix and just_machine_suffix. */
2394 add_prefix (pprefix, prefix, component, priority, require_machine_suffix, warn)
2395 struct path_prefix *pprefix;
2397 const char *component;
2398 /* enum prefix_priority */ int priority;
2399 int require_machine_suffix;
2402 struct prefix_list *pl, **prev;
2405 for (prev = &pprefix->plist;
2406 (*prev) != NULL && (*prev)->priority <= priority;
2407 prev = &(*prev)->next)
2410 /* Keep track of the longest prefix */
2412 prefix = update_path (prefix, component);
2413 len = strlen (prefix);
2414 if (len > pprefix->max_len)
2415 pprefix->max_len = len;
2417 pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
2418 pl->prefix = save_string (prefix, len);
2419 pl->require_machine_suffix = require_machine_suffix;
2420 pl->used_flag_ptr = warn;
2421 pl->priority = priority;
2425 /* Insert after PREV */
2430 /* Execute the command specified by the arguments on the current line of spec.
2431 When using pipes, this includes several piped-together commands
2432 with `|' between them.
2434 Return 0 if successful, -1 if failed. */
2440 int n_commands; /* # of command. */
2444 const char *prog; /* program name. */
2445 const char **argv; /* vector of args. */
2446 int pid; /* pid of process for this command. */
2449 struct command *commands; /* each command buffer with above info. */
2451 /* Count # of piped commands. */
2452 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2453 if (strcmp (argbuf[i], "|") == 0)
2456 /* Get storage for each command. */
2457 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2459 /* Split argbuf into its separate piped processes,
2460 and record info about each one.
2461 Also search for the programs that are to be run. */
2463 commands[0].prog = argbuf[0]; /* first command. */
2464 commands[0].argv = &argbuf[0];
2465 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK);
2468 commands[0].argv[0] = string;
2470 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2471 if (strcmp (argbuf[i], "|") == 0)
2472 { /* each command. */
2473 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2474 fatal ("-pipe not supported");
2476 argbuf[i] = 0; /* termination of command args. */
2477 commands[n_commands].prog = argbuf[i + 1];
2478 commands[n_commands].argv = &argbuf[i + 1];
2479 string = find_a_file (&exec_prefixes, commands[n_commands].prog, X_OK);
2481 commands[n_commands].argv[0] = string;
2485 argbuf[argbuf_index] = 0;
2487 /* If -v, print what we are about to do, and maybe query. */
2491 /* For help listings, put a blank line between sub-processes. */
2492 if (print_help_list)
2493 fputc ('\n', stderr);
2495 /* Print each piped command as a separate line. */
2496 for (i = 0; i < n_commands; i++)
2498 const char *const *j;
2500 for (j = commands[i].argv; *j; j++)
2501 fprintf (stderr, " %s", *j);
2503 /* Print a pipe symbol after all but the last command. */
2504 if (i + 1 != n_commands)
2505 fprintf (stderr, " |");
2506 fprintf (stderr, "\n");
2510 notice ("\nGo ahead? (y or n) ");
2514 while (getchar () != '\n')
2517 if (i != 'y' && i != 'Y')
2522 /* Run each piped subprocess. */
2524 for (i = 0; i < n_commands; i++)
2526 char *errmsg_fmt, *errmsg_arg;
2527 const char *string = commands[i].argv[0];
2529 /* For some bizarre reason, the second argument of execvp() is
2530 char *const *, not const char *const *. */
2531 commands[i].pid = pexecute (string, (char *const *) commands[i].argv,
2532 programname, temp_filename,
2533 &errmsg_fmt, &errmsg_arg,
2534 ((i == 0 ? PEXECUTE_FIRST : 0)
2535 | (i + 1 == n_commands ? PEXECUTE_LAST : 0)
2536 | (string == commands[i].prog
2537 ? PEXECUTE_SEARCH : 0)
2538 | (verbose_flag ? PEXECUTE_VERBOSE : 0)));
2540 if (commands[i].pid == -1)
2541 pfatal_pexecute (errmsg_fmt, errmsg_arg);
2543 if (string != commands[i].prog)
2544 free ((PTR) string);
2549 /* Wait for all the subprocesses to finish.
2550 We don't care what order they finish in;
2551 we know that N_COMMANDS waits will get them all.
2552 Ignore subprocesses that we don't know about,
2553 since they can be spawned by the process that exec'ed us. */
2557 #ifdef HAVE_GETRUSAGE
2559 double ut = 0.0, st = 0.0;
2562 for (i = 0; i < n_commands;)
2568 pid = pwait (commands[i].pid, &status, 0);
2572 #ifdef HAVE_GETRUSAGE
2575 /* getrusage returns the total resource usage of all children
2576 up to now. Copy the previous values into prus, get the
2577 current statistics, then take the difference. */
2580 getrusage (RUSAGE_CHILDREN, &rus);
2581 d.tv_sec = rus.ru_utime.tv_sec - prus.ru_utime.tv_sec;
2582 d.tv_usec = rus.ru_utime.tv_usec - prus.ru_utime.tv_usec;
2583 ut = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2585 d.tv_sec = rus.ru_stime.tv_sec - prus.ru_stime.tv_sec;
2586 d.tv_usec = rus.ru_stime.tv_usec - prus.ru_stime.tv_usec;
2587 st = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2591 for (j = 0; j < n_commands; j++)
2592 if (commands[j].pid == pid)
2595 if (WIFSIGNALED (status))
2598 /* SIGPIPE is a special case. It happens in -pipe mode
2599 when the compiler dies before the preprocessor is
2600 done, or the assembler dies before the compiler is
2601 done. There's generally been an error already, and
2602 this is just fallout. So don't generate another error
2603 unless we would otherwise have succeeded. */
2604 if (WTERMSIG (status) == SIGPIPE
2605 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2610 Internal error: %s (program %s)\n\
2611 Please submit a full bug report.\n\
2612 See %s for instructions.",
2613 strsignal (WTERMSIG (status)), commands[j].prog,
2618 else if (WIFEXITED (status)
2619 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2621 if (WEXITSTATUS (status) > greatest_status)
2622 greatest_status = WEXITSTATUS (status);
2625 #ifdef HAVE_GETRUSAGE
2626 if (report_times && ut + st != 0)
2627 notice ("# %s %.2f %.2f\n", commands[j].prog, ut, st);
2636 /* Find all the switches given to us
2637 and make a vector describing them.
2638 The elements of the vector are strings, one per switch given.
2639 If a switch uses following arguments, then the `part1' field
2640 is the switch itself and the `args' field
2641 is a null-terminated vector containing the following arguments.
2642 The `live_cond' field is:
2644 1 if the switch is true in a conditional spec,
2645 -1 if false (overridden by a later switch)
2646 -2 if this switch should be ignored (used in %{<S})
2647 The `validated' field is nonzero if any spec has looked at this switch;
2648 if it remains zero at the end of the run, it must be meaningless. */
2651 #define SWITCH_FALSE -1
2652 #define SWITCH_IGNORE -2
2653 #define SWITCH_LIVE 1
2663 static struct switchstr *switches;
2665 static int n_switches;
2670 const char *language;
2673 /* Also a vector of input files specified. */
2675 static struct infile *infiles;
2677 static int n_infiles;
2679 /* This counts the number of libraries added by lang_specific_driver, so that
2680 we can tell if there were any user supplied any files or libraries. */
2682 static int added_libraries;
2684 /* And a vector of corresponding output files is made up later. */
2686 static const char **outfiles;
2688 /* Used to track if none of the -B paths are used. */
2691 /* Used to track if standard path isn't used and -b or -V is specified. */
2692 static int warn_std;
2694 /* Gives value to pass as "warn" to add_prefix for standard prefixes. */
2695 static int *warn_std_ptr = 0;
2697 #if defined(HAVE_OBJECT_SUFFIX) || defined(HAVE_EXECUTABLE_SUFFIX)
2699 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2700 is true if we should look for an executable suffix as well. */
2703 convert_filename (name, do_exe)
2713 len = strlen (name);
2715 #ifdef HAVE_OBJECT_SUFFIX
2716 /* Convert x.o to x.obj if OBJECT_SUFFIX is ".obj". */
2718 && name[len - 2] == '.'
2719 && name[len - 1] == 'o')
2721 obstack_grow (&obstack, name, len - 2);
2722 obstack_grow0 (&obstack, OBJECT_SUFFIX, strlen (OBJECT_SUFFIX));
2723 name = obstack_finish (&obstack);
2727 #ifdef HAVE_EXECUTABLE_SUFFIX
2728 /* If there is no filetype, make it the executable suffix (which includes
2729 the "."). But don't get confused if we have just "-o". */
2730 if (! do_exe || EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
2733 for (i = len - 1; i >= 0; i--)
2734 if (IS_DIR_SEPARATOR (name[i]))
2737 for (i++; i < len; i++)
2741 obstack_grow (&obstack, name, len);
2742 obstack_grow0 (&obstack, EXECUTABLE_SUFFIX, strlen (EXECUTABLE_SUFFIX));
2743 name = obstack_finish (&obstack);
2750 /* Display the command line switches accepted by gcc. */
2754 printf (_("Usage: %s [options] file...\n"), programname);
2755 fputs (_("Options:\n"), stdout);
2757 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
2758 fputs (_(" --help Display this information\n"), stdout);
2760 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
2761 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
2762 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
2763 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
2764 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
2765 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
2766 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
2767 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
2768 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
2770 -print-multi-lib Display the mapping between command line options and\n\
2771 multiple library search directories\n"), stdout);
2772 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
2773 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
2774 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
2775 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
2776 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
2777 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
2778 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
2779 fputs (_(" -specs=<file> Override builtin specs with the contents of <file>\n"), stdout);
2780 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
2781 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
2782 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
2783 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
2784 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
2785 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
2786 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
2787 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
2788 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
2790 -x <language> Specify the language of the following input files\n\
2791 Permissable languages include: c c++ assembler none\n\
2792 'none' means revert to the default behaviour of\n\
2793 guessing the language based on the file's extension\n\
2797 \nOptions starting with -g, -f, -m, -O or -W are automatically passed on to\n\
2798 the various sub-processes invoked by %s. In order to pass other options\n\
2799 on to these processes the -W<letter> options must be used.\n\
2802 /* The rest of the options are displayed by invocations of the various
2807 add_preprocessor_option (option, len)
2811 n_preprocessor_options++;
2813 if (! preprocessor_options)
2814 preprocessor_options
2815 = (char **) xmalloc (n_preprocessor_options * sizeof (char *));
2817 preprocessor_options
2818 = (char **) xrealloc (preprocessor_options,
2819 n_preprocessor_options * sizeof (char *));
2821 preprocessor_options [n_preprocessor_options - 1] =
2822 save_string (option, len);
2826 add_assembler_option (option, len)
2830 n_assembler_options++;
2832 if (! assembler_options)
2834 = (char **) xmalloc (n_assembler_options * sizeof (char *));
2837 = (char **) xrealloc (assembler_options,
2838 n_assembler_options * sizeof (char *));
2840 assembler_options [n_assembler_options - 1] = save_string (option, len);
2844 add_linker_option (option, len)
2850 if (! linker_options)
2852 = (char **) xmalloc (n_linker_options * sizeof (char *));
2855 = (char **) xrealloc (linker_options,
2856 n_linker_options * sizeof (char *));
2858 linker_options [n_linker_options - 1] = save_string (option, len);
2861 /* Create the vector `switches' and its contents.
2862 Store its length in `n_switches'. */
2865 process_command (argc, argv)
2867 const char *const *argv;
2873 const char *spec_lang = 0;
2874 int last_language_n_infiles;
2877 int lang_n_infiles = 0;
2878 #ifdef MODIFY_TARGET_NAME
2879 int is_modify_target_name;
2882 GET_ENV_PATH_LIST (gcc_exec_prefix, "GCC_EXEC_PREFIX");
2886 added_libraries = 0;
2888 /* Figure compiler version from version string. */
2890 compiler_version = temp1 = xstrdup (version_string);
2892 for (; *temp1; ++temp1)
2901 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
2902 see if we can create it from the pathname specified in argv[0]. */
2905 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
2906 if (!gcc_exec_prefix)
2908 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
2909 standard_exec_prefix);
2910 if (gcc_exec_prefix)
2911 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL_PTR));
2915 if (gcc_exec_prefix)
2917 int len = strlen (gcc_exec_prefix);
2918 if (len > (int) sizeof ("/lib/gcc-lib/") - 1
2919 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
2921 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc-lib/") + 1;
2922 if (IS_DIR_SEPARATOR (*temp)
2923 && strncmp (temp + 1, "lib", 3) == 0
2924 && IS_DIR_SEPARATOR (temp[4])
2925 && strncmp (temp + 5, "gcc-lib", 7) == 0)
2926 len -= sizeof ("/lib/gcc-lib/") - 1;
2929 set_std_prefix (gcc_exec_prefix, len);
2930 add_prefix (&exec_prefixes, gcc_exec_prefix, "GCC",
2931 PREFIX_PRIORITY_LAST, 0, NULL_PTR);
2932 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
2933 PREFIX_PRIORITY_LAST, 0, NULL_PTR);
2936 /* COMPILER_PATH and LIBRARY_PATH have values
2937 that are lists of directory names with colons. */
2939 GET_ENV_PATH_LIST (temp, "COMPILER_PATH");
2942 const char *startp, *endp;
2943 char *nstore = (char *) alloca (strlen (temp) + 3);
2945 startp = endp = temp;
2948 if (*endp == PATH_SEPARATOR || *endp == 0)
2950 strncpy (nstore, startp, endp - startp);
2952 strcpy (nstore, concat (".", dir_separator_str, NULL_PTR));
2953 else if (!IS_DIR_SEPARATOR (endp[-1]))
2955 nstore[endp - startp] = DIR_SEPARATOR;
2956 nstore[endp - startp + 1] = 0;
2959 nstore[endp - startp] = 0;
2960 add_prefix (&exec_prefixes, nstore, 0,
2961 PREFIX_PRIORITY_LAST, 0, NULL_PTR);
2962 add_prefix (&include_prefixes,
2963 concat (nstore, "include", NULL_PTR),
2964 0, PREFIX_PRIORITY_LAST, 0, NULL_PTR);
2967 endp = startp = endp + 1;
2974 GET_ENV_PATH_LIST (temp, LIBRARY_PATH_ENV);
2975 if (temp && *cross_compile == '0')
2977 const char *startp, *endp;
2978 char *nstore = (char *) alloca (strlen (temp) + 3);
2980 startp = endp = temp;
2983 if (*endp == PATH_SEPARATOR || *endp == 0)
2985 strncpy (nstore, startp, endp - startp);
2987 strcpy (nstore, concat (".", dir_separator_str, NULL_PTR));
2988 else if (!IS_DIR_SEPARATOR (endp[-1]))
2990 nstore[endp - startp] = DIR_SEPARATOR;
2991 nstore[endp - startp + 1] = 0;
2994 nstore[endp - startp] = 0;
2995 add_prefix (&startfile_prefixes, nstore, NULL_PTR,
2996 PREFIX_PRIORITY_LAST, 0, NULL_PTR);
2999 endp = startp = endp + 1;
3006 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3007 GET_ENV_PATH_LIST (temp, "LPATH");
3008 if (temp && *cross_compile == '0')
3010 const char *startp, *endp;
3011 char *nstore = (char *) alloca (strlen (temp) + 3);
3013 startp = endp = temp;
3016 if (*endp == PATH_SEPARATOR || *endp == 0)
3018 strncpy (nstore, startp, endp - startp);
3020 strcpy (nstore, concat (".", dir_separator_str, NULL_PTR));
3021 else if (!IS_DIR_SEPARATOR (endp[-1]))
3023 nstore[endp - startp] = DIR_SEPARATOR;
3024 nstore[endp - startp + 1] = 0;
3027 nstore[endp - startp] = 0;
3028 add_prefix (&startfile_prefixes, nstore, NULL_PTR,
3029 PREFIX_PRIORITY_LAST, 0, NULL_PTR);
3032 endp = startp = endp + 1;
3039 /* Convert new-style -- options to old-style. */
3040 translate_options (&argc, &argv);
3042 /* Do language-specific adjustment/addition of flags. */
3043 lang_specific_driver (&argc, &argv, &added_libraries);
3045 /* Scan argv twice. Here, the first time, just count how many switches
3046 there will be in their vector, and how many input files in theirs.
3047 Also parse any switches that determine the configuration name, such as -b.
3048 Here we also parse the switches that cc itself uses (e.g. -v). */
3050 for (i = 1; i < argc; i++)
3052 if (! strcmp (argv[i], "-dumpspecs"))
3054 struct spec_list *sl;
3056 for (sl = specs; sl; sl = sl->next)
3057 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3058 if (link_command_spec)
3059 printf ("*link_command:\n%s\n\n", link_command_spec);
3062 else if (! strcmp (argv[i], "-dumpversion"))
3064 printf ("%s\n", spec_version);
3067 else if (! strcmp (argv[i], "-dumpmachine"))
3069 printf ("%s\n", spec_machine);
3072 else if (strcmp (argv[i], "-fhelp") == 0)
3074 /* translate_options () has turned --help into -fhelp. */
3075 print_help_list = 1;
3077 /* We will be passing a dummy file on to the sub-processes. */
3081 add_preprocessor_option ("--help", 6);
3082 add_assembler_option ("--help", 6);
3083 add_linker_option ("--help", 6);
3085 else if (! strcmp (argv[i], "-pass-exit-codes"))
3087 pass_exit_codes = 1;
3090 else if (! strcmp (argv[i], "-print-search-dirs"))
3091 print_search_dirs = 1;
3092 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3093 print_file_name = "libgcc.a";
3094 else if (! strncmp (argv[i], "-print-file-name=", 17))
3095 print_file_name = argv[i] + 17;
3096 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3097 print_prog_name = argv[i] + 17;
3098 else if (! strcmp (argv[i], "-print-multi-lib"))
3099 print_multi_lib = 1;
3100 else if (! strcmp (argv[i], "-print-multi-directory"))
3101 print_multi_directory = 1;
3102 else if (! strncmp (argv[i], "-Wa,", 4))
3105 /* Pass the rest of this option to the assembler. */
3107 /* Split the argument at commas. */
3109 for (j = 4; argv[i][j]; j++)
3110 if (argv[i][j] == ',')
3112 add_assembler_option (argv[i] + prev, j - prev);
3116 /* Record the part after the last comma. */
3117 add_assembler_option (argv[i] + prev, j - prev);
3119 else if (! strncmp (argv[i], "-Wp,", 4))
3122 /* Pass the rest of this option to the preprocessor. */
3124 /* Split the argument at commas. */
3126 for (j = 4; argv[i][j]; j++)
3127 if (argv[i][j] == ',')
3129 add_preprocessor_option (argv[i] + prev, j - prev);
3133 /* Record the part after the last comma. */
3134 add_preprocessor_option (argv[i] + prev, j - prev);
3136 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3137 /* The +e options to the C++ front-end. */
3139 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3142 /* Split the argument at commas. */
3143 for (j = 3; argv[i][j]; j++)
3144 n_infiles += (argv[i][j] == ',');
3146 else if (strcmp (argv[i], "-Xlinker") == 0)
3149 fatal ("argument to `-Xlinker' is missing");
3154 else if (strncmp (argv[i], "-l", 2) == 0)
3156 else if (strcmp (argv[i], "-save-temps") == 0)
3158 save_temps_flag = 1;
3161 else if (strcmp (argv[i], "-specs") == 0)
3163 struct user_specs *user = (struct user_specs *)
3164 xmalloc (sizeof (struct user_specs));
3166 fatal ("argument to `-specs' is missing");
3168 user->next = (struct user_specs *) 0;
3169 user->filename = argv[i];
3170 if (user_specs_tail)
3171 user_specs_tail->next = user;
3173 user_specs_head = user;
3174 user_specs_tail = user;
3176 else if (strncmp (argv[i], "-specs=", 7) == 0)
3178 struct user_specs *user = (struct user_specs *)
3179 xmalloc (sizeof (struct user_specs));
3180 if (strlen (argv[i]) == 7)
3181 fatal ("argument to `-specs=' is missing");
3183 user->next = (struct user_specs *) 0;
3184 user->filename = argv[i] + 7;
3185 if (user_specs_tail)
3186 user_specs_tail->next = user;
3188 user_specs_head = user;
3189 user_specs_tail = user;
3191 else if (strcmp (argv[i], "-time") == 0)
3193 else if (argv[i][0] == '-' && argv[i][1] != 0)
3195 register const char *p = &argv[i][1];
3196 register int c = *p;
3202 if (p[1] == 0 && i + 1 == argc)
3203 fatal ("argument to `-b' is missing");
3205 spec_machine = argv[++i];
3207 spec_machine = p + 1;
3209 warn_std_ptr = &warn_std;
3215 if (p[1] == 0 && i + 1 == argc)
3216 fatal ("argument to `-B' is missing");
3222 /* As a kludge, if the arg is "[foo/]stageN/", just
3223 add "[foo/]include" to the include prefix. */
3224 int len = strlen (value);
3227 && (IS_DIR_SEPARATOR (value[len - 8]))))
3228 && strncmp (value + len - 7, "stage", 5) == 0
3229 && ISDIGIT (value[len - 2])
3230 && (IS_DIR_SEPARATOR (value[len - 1])))
3233 add_prefix (&include_prefixes, "include", NULL_PTR,
3234 PREFIX_PRIORITY_B_OPT, 0, NULL_PTR);
3237 char *string = xmalloc (len + 1);
3238 strncpy (string, value, len-7);
3239 strcpy (string+len-7, "include");
3240 add_prefix (&include_prefixes, string, NULL_PTR,
3241 PREFIX_PRIORITY_B_OPT, 0, NULL_PTR);
3245 add_prefix (&exec_prefixes, value, NULL_PTR,
3246 PREFIX_PRIORITY_B_OPT, 0, &warn_B);
3247 add_prefix (&startfile_prefixes, value, NULL_PTR,
3248 PREFIX_PRIORITY_B_OPT, 0, &warn_B);
3249 add_prefix (&include_prefixes, concat (value, "include",
3252 PREFIX_PRIORITY_B_OPT, 0, NULL_PTR);
3257 case 'v': /* Print our subcommands and print versions. */
3259 /* If they do anything other than exactly `-v', don't set
3260 verbose_flag; rather, continue on to give the error. */
3268 if (p[1] == 0 && i + 1 == argc)
3269 fatal ("argument to `-V' is missing");
3271 spec_version = argv[++i];
3273 spec_version = p + 1;
3274 compiler_version = spec_version;
3275 warn_std_ptr = &warn_std;
3277 /* Validate the version number. Use the same checks
3278 done when inserting it into a spec.
3280 The format of the version string is
3281 ([^0-9]*-)?[0-9]+[.][0-9]+([.][0-9]+)?([- ].*)? */
3283 const char *v = compiler_version;
3285 /* Ignore leading non-digits. i.e. "foo-" in "foo-2.7.2". */
3286 while (! ISDIGIT (*v))
3289 if (v > compiler_version && v[-1] != '-')
3290 fatal ("invalid version number format");
3292 /* Set V after the first period. */
3293 while (ISDIGIT (*v))
3297 fatal ("invalid version number format");
3300 while (ISDIGIT (*v))
3303 if (*v != 0 && *v != ' ' && *v != '.' && *v != '-')
3304 fatal ("invalid version number format");
3320 #if defined(HAVE_EXECUTABLE_SUFFIX)
3325 /* Forward scan, just in case -S or -c is specified
3332 if (argv[j][0] == '-')
3334 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
3340 else if (skip = SWITCH_TAKES_ARG (argv[j][1]))
3341 j += skip - (argv[j][2] != 0);
3342 else if (skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1))
3349 #if defined(HAVE_EXECUTABLE_SUFFIX) || defined(HAVE_OBJECT_SUFFIX)
3351 argv[i + 1] = convert_filename (argv[i + 1], ! have_c);
3353 argv[i] = convert_filename (argv[i], ! have_c);
3360 #ifdef MODIFY_TARGET_NAME
3361 is_modify_target_name = 0;
3364 j < sizeof modify_target / sizeof modify_target[0]; j++)
3365 if (! strcmp (argv[i], modify_target[j].sw))
3368 = (char *) xmalloc (strlen (modify_target[j].str)
3369 + strlen (spec_machine));
3372 int made_addition = 0;
3374 is_modify_target_name = 1;
3375 for (p = spec_machine, q = new_name; *p != 0; )
3377 if (modify_target[j].add_del == DELETE
3378 && (! strncmp (q, modify_target[j].str,
3379 strlen (modify_target[j].str))))
3380 p += strlen (modify_target[j].str);
3381 else if (modify_target[j].add_del == ADD
3382 && ! made_addition && *p == '-')
3384 for (r = modify_target[j].str; *r != 0; )
3392 spec_machine = new_name;
3395 if (is_modify_target_name)
3401 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
3402 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
3403 else if (WORD_SWITCH_TAKES_ARG (p))
3404 i += WORD_SWITCH_TAKES_ARG (p);
3414 if (have_c && have_o && lang_n_infiles > 1)
3415 fatal ("cannot specify -o with -c or -S and multiple compilations");
3417 /* Set up the search paths before we go looking for config files. */
3419 /* These come before the md prefixes so that we will find gcc's subcommands
3420 (such as cpp) rather than those of the host system. */
3421 /* Use 2 as fourth arg meaning try just the machine as a suffix,
3422 as well as trying the machine and the version. */
3424 add_prefix (&exec_prefixes, standard_exec_prefix, "GCC",
3425 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3426 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3427 PREFIX_PRIORITY_LAST, 2, warn_std_ptr);
3428 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS",
3429 PREFIX_PRIORITY_LAST, 2, warn_std_ptr);
3432 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3433 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3434 add_prefix (&startfile_prefixes, standard_exec_prefix_1, "BINUTILS",
3435 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3437 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3438 dir_separator_str, NULL_PTR);
3440 /* If tooldir is relative, base it on exec_prefixes. A relative
3441 tooldir lets us move the installed tree as a unit.
3443 If GCC_EXEC_PREFIX is defined, then we want to add two relative
3444 directories, so that we can search both the user specified directory
3445 and the standard place. */
3447 if (!IS_DIR_SEPARATOR (*tooldir_prefix))
3449 if (gcc_exec_prefix)
3451 char *gcc_exec_tooldir_prefix
3452 = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
3453 spec_version, dir_separator_str, tooldir_prefix, NULL_PTR);
3455 add_prefix (&exec_prefixes,
3456 concat (gcc_exec_tooldir_prefix, "bin",
3457 dir_separator_str, NULL_PTR),
3458 NULL_PTR, PREFIX_PRIORITY_LAST, 0, NULL_PTR);
3459 add_prefix (&startfile_prefixes,
3460 concat (gcc_exec_tooldir_prefix, "lib",
3461 dir_separator_str, NULL_PTR),
3462 NULL_PTR, PREFIX_PRIORITY_LAST, 0, NULL_PTR);
3465 tooldir_prefix = concat (standard_exec_prefix, spec_machine,
3466 dir_separator_str, spec_version,
3467 dir_separator_str, tooldir_prefix, NULL_PTR);
3470 add_prefix (&exec_prefixes,
3471 concat (tooldir_prefix, "bin", dir_separator_str, NULL_PTR),
3472 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL_PTR);
3473 add_prefix (&startfile_prefixes,
3474 concat (tooldir_prefix, "lib", dir_separator_str, NULL_PTR),
3475 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL_PTR);
3477 /* More prefixes are enabled in main, after we read the specs file
3478 and determine whether this is cross-compilation or not. */
3480 /* Then create the space for the vectors and scan again. */
3482 switches = ((struct switchstr *)
3483 xmalloc ((n_switches + 1) * sizeof (struct switchstr)));
3484 infiles = (struct infile *) xmalloc ((n_infiles + 1) * sizeof (struct infile));
3487 last_language_n_infiles = -1;
3489 /* This, time, copy the text of each switch and store a pointer
3490 to the copy in the vector of switches.
3491 Store all the infiles in their vector. */
3493 for (i = 1; i < argc; i++)
3495 /* Just skip the switches that were handled by the preceding loop. */
3496 #ifdef MODIFY_TARGET_NAME
3497 is_modify_target_name = 0;
3499 for (j = 0; j < sizeof modify_target / sizeof modify_target[0]; j++)
3500 if (! strcmp (argv[i], modify_target[j].sw))
3501 is_modify_target_name = 1;
3503 if (is_modify_target_name)
3507 if (! strncmp (argv[i], "-Wa,", 4))
3509 else if (! strncmp (argv[i], "-Wp,", 4))
3511 else if (! strcmp (argv[i], "-pass-exit-codes"))
3513 else if (! strcmp (argv[i], "-print-search-dirs"))
3515 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3517 else if (! strncmp (argv[i], "-print-file-name=", 17))
3519 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3521 else if (! strcmp (argv[i], "-print-multi-lib"))
3523 else if (! strcmp (argv[i], "-print-multi-directory"))
3525 else if (strcmp (argv[i], "-fhelp") == 0)
3529 /* Create a dummy input file, so that we can pass --help on to
3530 the various sub-processes. */
3531 infiles[n_infiles].language = "c";
3532 infiles[n_infiles++].name = "help-dummy";
3534 /* Preserve the --help switch so that it can be caught by the
3536 switches[n_switches].part1 = "--help";
3537 switches[n_switches].args = 0;
3538 switches[n_switches].live_cond = SWITCH_OK;
3539 switches[n_switches].validated = 0;
3544 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3546 /* Compensate for the +e options to the C++ front-end;
3547 they're there simply for cfront call-compatibility. We do
3548 some magic in default_compilers to pass them down properly.
3549 Note we deliberately start at the `+' here, to avoid passing
3550 -e0 or -e1 down into the linker. */
3551 switches[n_switches].part1 = &argv[i][0];
3552 switches[n_switches].args = 0;
3553 switches[n_switches].live_cond = SWITCH_OK;
3554 switches[n_switches].validated = 0;
3557 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3560 /* Split the argument at commas. */
3562 for (j = 4; argv[i][j]; j++)
3563 if (argv[i][j] == ',')
3565 infiles[n_infiles].language = "*";
3566 infiles[n_infiles++].name
3567 = save_string (argv[i] + prev, j - prev);
3570 /* Record the part after the last comma. */
3571 infiles[n_infiles].language = "*";
3572 infiles[n_infiles++].name = argv[i] + prev;
3574 else if (strcmp (argv[i], "-Xlinker") == 0)
3576 infiles[n_infiles].language = "*";
3577 infiles[n_infiles++].name = argv[++i];
3579 else if (strncmp (argv[i], "-l", 2) == 0)
3581 infiles[n_infiles].language = "*";
3582 infiles[n_infiles++].name = argv[i];
3584 else if (strcmp (argv[i], "-specs") == 0)
3586 else if (strncmp (argv[i], "-specs=", 7) == 0)
3588 else if (strcmp (argv[i], "-time") == 0)
3590 else if ((save_temps_flag || report_times)
3591 && strcmp (argv[i], "-pipe") == 0)
3593 /* -save-temps overrides -pipe, so that temp files are produced */
3594 if (save_temps_flag)
3595 error ("Warning: -pipe ignored since -save-temps specified");
3596 /* -time overrides -pipe because we can't get correct stats when
3597 multiple children are running at once. */
3598 else if (report_times)
3599 error ("Warning: -pipe ignored since -time specified");
3601 else if (argv[i][0] == '-' && argv[i][1] != 0)
3603 const char *p = &argv[i][1];
3608 if (p[1] == 0 && i + 1 == argc)
3609 fatal ("argument to `-x' is missing");
3611 spec_lang = argv[++i];
3614 if (! strcmp (spec_lang, "none"))
3615 /* Suppress the warning if -xnone comes after the last input
3616 file, because alternate command interfaces like g++ might
3617 find it useful to place -xnone after each input file. */
3620 last_language_n_infiles = n_infiles;
3623 switches[n_switches].part1 = p;
3624 /* Deal with option arguments in separate argv elements. */
3625 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
3626 || WORD_SWITCH_TAKES_ARG (p))
3629 int n_args = WORD_SWITCH_TAKES_ARG (p);
3633 /* Count only the option arguments in separate argv elements. */
3634 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
3636 if (i + n_args >= argc)
3637 fatal ("argument to `-%s' is missing", p);
3638 switches[n_switches].args
3639 = (const char **) xmalloc ((n_args + 1) * sizeof(const char *));
3641 switches[n_switches].args[j++] = argv[++i];
3642 /* Null-terminate the vector. */
3643 switches[n_switches].args[j] = 0;
3645 else if (index (switches_need_spaces, c))
3647 /* On some systems, ld cannot handle some options without
3648 a space. So split the option from its argument. */
3649 char *part1 = (char *) xmalloc (2);
3654 switches[n_switches].part1 = part1;
3655 switches[n_switches].args
3656 = (const char **) xmalloc (2 * sizeof (const char *));
3657 switches[n_switches].args[0] = tmp = xmalloc (strlen (p));
3658 strcpy (tmp, &p[1]);
3659 switches[n_switches].args[1] = 0;
3662 switches[n_switches].args = 0;
3664 switches[n_switches].live_cond = SWITCH_OK;
3665 switches[n_switches].validated = 0;
3666 /* This is always valid, since gcc.c itself understands it. */
3667 if (!strcmp (p, "save-temps"))
3668 switches[n_switches].validated = 1;
3671 char ch = switches[n_switches].part1[0];
3672 if (ch == 'V' || ch == 'b' || ch == 'B')
3673 switches[n_switches].validated = 1;
3679 #ifdef HAVE_OBJECT_SUFFIX
3680 argv[i] = convert_filename (argv[i], 0);
3683 if (strcmp (argv[i], "-") != 0 && access (argv[i], R_OK) < 0)
3685 perror_with_name (argv[i]);
3690 infiles[n_infiles].language = spec_lang;
3691 infiles[n_infiles++].name = argv[i];
3696 if (n_infiles == last_language_n_infiles && spec_lang != 0)
3697 error ("Warning: `-x %s' after last input file has no effect", spec_lang);
3699 switches[n_switches].part1 = 0;
3700 infiles[n_infiles].name = 0;
3703 /* Process a spec string, accumulating and running commands. */
3705 /* These variables describe the input file name.
3706 input_file_number is the index on outfiles of this file,
3707 so that the output file name can be stored for later use by %o.
3708 input_basename is the start of the part of the input file
3709 sans all directory names, and basename_length is the number
3710 of characters starting there excluding the suffix .c or whatever. */
3712 const char *input_filename;
3713 static int input_file_number;
3714 size_t input_filename_length;
3715 static int basename_length;
3716 static int suffixed_basename_length;
3717 static const char *input_basename;
3718 static const char *input_suffix;
3720 /* These are variables used within do_spec and do_spec_1. */
3722 /* Nonzero if an arg has been started and not yet terminated
3723 (with space, tab or newline). */
3724 static int arg_going;
3726 /* Nonzero means %d or %g has been seen; the next arg to be terminated
3727 is a temporary file name. */
3728 static int delete_this_arg;
3730 /* Nonzero means %w has been seen; the next arg to be terminated
3731 is the output file name of this compilation. */
3732 static int this_is_output_file;
3734 /* Nonzero means %s has been seen; the next arg to be terminated
3735 is the name of a library file and we should try the standard
3736 search dirs for it. */
3737 static int this_is_library_file;
3739 /* Nonzero means that the input of this command is coming from a pipe. */
3740 static int input_from_pipe;
3742 /* Process the spec SPEC and run the commands specified therein.
3743 Returns 0 if the spec is successfully processed; -1 if failed. */
3753 delete_this_arg = 0;
3754 this_is_output_file = 0;
3755 this_is_library_file = 0;
3756 input_from_pipe = 0;
3758 value = do_spec_1 (spec, 0, NULL_PTR);
3760 /* Force out any unfinished command.
3761 If -pipe, this forces out the last command if it ended in `|'. */
3764 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
3767 if (argbuf_index > 0)
3774 /* Process the sub-spec SPEC as a portion of a larger spec.
3775 This is like processing a whole spec except that we do
3776 not initialize at the beginning and we do not supply a
3777 newline by default at the end.
3778 INSWITCH nonzero means don't process %-sequences in SPEC;
3779 in this case, % is treated as an ordinary character.
3780 This is used while substituting switches.
3781 INSWITCH nonzero also causes SPC not to terminate an argument.
3783 Value is zero unless a line was finished
3784 and the command on that line reported an error. */
3787 do_spec_1 (spec, inswitch, soft_matched_part)
3790 const char *soft_matched_part;
3792 register const char *p = spec;
3799 /* If substituting a switch, treat all chars like letters.
3800 Otherwise, NL, SPC, TAB and % are special. */
3801 switch (inswitch ? 'a' : c)
3804 /* End of line: finish any pending argument,
3805 then run the pending command if one has been started. */
3808 obstack_1grow (&obstack, 0);
3809 string = obstack_finish (&obstack);
3810 if (this_is_library_file)
3811 string = find_file (string);
3812 store_arg (string, delete_this_arg, this_is_output_file);
3813 if (this_is_output_file)
3814 outfiles[input_file_number] = string;
3818 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
3820 for (i = 0; i < n_switches; i++)
3821 if (!strcmp (switches[i].part1, "pipe"))
3824 /* A `|' before the newline means use a pipe here,
3825 but only if -pipe was specified.
3826 Otherwise, execute now and don't pass the `|' as an arg. */
3829 input_from_pipe = 1;
3830 switches[i].validated = 1;
3837 if (argbuf_index > 0)
3843 /* Reinitialize for a new command, and for a new argument. */
3846 delete_this_arg = 0;
3847 this_is_output_file = 0;
3848 this_is_library_file = 0;
3849 input_from_pipe = 0;
3853 /* End any pending argument. */
3856 obstack_1grow (&obstack, 0);
3857 string = obstack_finish (&obstack);
3858 if (this_is_library_file)
3859 string = find_file (string);
3860 store_arg (string, delete_this_arg, this_is_output_file);
3861 if (this_is_output_file)
3862 outfiles[input_file_number] = string;
3866 obstack_1grow (&obstack, c);
3872 /* Space or tab ends an argument if one is pending. */
3875 obstack_1grow (&obstack, 0);
3876 string = obstack_finish (&obstack);
3877 if (this_is_library_file)
3878 string = find_file (string);
3879 store_arg (string, delete_this_arg, this_is_output_file);
3880 if (this_is_output_file)
3881 outfiles[input_file_number] = string;
3883 /* Reinitialize for a new argument. */
3885 delete_this_arg = 0;
3886 this_is_output_file = 0;
3887 this_is_library_file = 0;
3894 fatal ("Invalid specification! Bug in cc.");
3897 obstack_grow (&obstack, input_basename, basename_length);
3902 obstack_grow (&obstack, input_basename, suffixed_basename_length);
3907 delete_this_arg = 2;
3910 /* Dump out the directories specified with LIBRARY_PATH,
3911 followed by the absolute directories
3912 that we search for startfiles. */
3915 struct prefix_list *pl = startfile_prefixes.plist;
3916 size_t bufsize = 100;
3917 char *buffer = (char *) xmalloc (bufsize);
3920 for (; pl; pl = pl->next)
3922 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
3923 /* Used on systems which record the specified -L dirs
3924 and use them to search for dynamic linking. */
3925 /* Relative directories always come from -B,
3926 and it is better not to use them for searching
3927 at run time. In particular, stage1 loses. */
3928 if (!IS_DIR_SEPARATOR (pl->prefix[0]))
3931 /* Try subdirectory if there is one. */
3932 if (multilib_dir != NULL)
3936 if (strlen (pl->prefix) + strlen (machine_suffix)
3938 bufsize = (strlen (pl->prefix)
3939 + strlen (machine_suffix)) * 2 + 1;
3940 buffer = (char *) xrealloc (buffer, bufsize);
3941 strcpy (buffer, pl->prefix);
3942 strcat (buffer, machine_suffix);
3943 if (is_directory (buffer, multilib_dir, 1))
3945 do_spec_1 ("-L", 0, NULL_PTR);
3946 #ifdef SPACE_AFTER_L_OPTION
3947 do_spec_1 (" ", 0, NULL_PTR);
3949 do_spec_1 (buffer, 1, NULL_PTR);
3950 do_spec_1 (multilib_dir, 1, NULL_PTR);
3951 /* Make this a separate argument. */
3952 do_spec_1 (" ", 0, NULL_PTR);
3955 if (!pl->require_machine_suffix)
3957 if (is_directory (pl->prefix, multilib_dir, 1))
3959 do_spec_1 ("-L", 0, NULL_PTR);
3960 #ifdef SPACE_AFTER_L_OPTION
3961 do_spec_1 (" ", 0, NULL_PTR);
3963 do_spec_1 (pl->prefix, 1, NULL_PTR);
3964 do_spec_1 (multilib_dir, 1, NULL_PTR);
3965 /* Make this a separate argument. */
3966 do_spec_1 (" ", 0, NULL_PTR);
3972 if (is_directory (pl->prefix, machine_suffix, 1))
3974 do_spec_1 ("-L", 0, NULL_PTR);
3975 #ifdef SPACE_AFTER_L_OPTION
3976 do_spec_1 (" ", 0, NULL_PTR);
3978 do_spec_1 (pl->prefix, 1, NULL_PTR);
3979 /* Remove slash from machine_suffix. */
3980 if (strlen (machine_suffix) >= bufsize)
3981 bufsize = strlen (machine_suffix) * 2 + 1;
3982 buffer = (char *) xrealloc (buffer, bufsize);
3983 strcpy (buffer, machine_suffix);
3984 idx = strlen (buffer);
3985 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
3986 buffer[idx - 1] = 0;
3987 do_spec_1 (buffer, 1, NULL_PTR);
3988 /* Make this a separate argument. */
3989 do_spec_1 (" ", 0, NULL_PTR);
3992 if (!pl->require_machine_suffix)
3994 if (is_directory (pl->prefix, "", 1))
3996 do_spec_1 ("-L", 0, NULL_PTR);
3997 #ifdef SPACE_AFTER_L_OPTION
3998 do_spec_1 (" ", 0, NULL_PTR);
4000 /* Remove slash from pl->prefix. */
4001 if (strlen (pl->prefix) >= bufsize)
4002 bufsize = strlen (pl->prefix) * 2 + 1;
4003 buffer = (char *) xrealloc (buffer, bufsize);
4004 strcpy (buffer, pl->prefix);
4005 idx = strlen (buffer);
4006 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4007 buffer[idx - 1] = 0;
4008 do_spec_1 (buffer, 1, NULL_PTR);
4009 /* Make this a separate argument. */
4010 do_spec_1 (" ", 0, NULL_PTR);
4019 /* %efoo means report an error with `foo' as error message
4020 and don't execute any more commands for this file. */
4024 while (*p != 0 && *p != '\n')
4026 buf = (char *) alloca (p - q + 1);
4027 strncpy (buf, q, p - q);
4038 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is defined,
4039 and it is not a directory, and it is writable, use it.
4040 Otherwise, fall through and treat this like any other
4043 if ((!save_temps_flag)
4044 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4045 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4047 obstack_grow (&obstack, HOST_BIT_BUCKET,
4048 strlen (HOST_BIT_BUCKET));
4049 delete_this_arg = 0;
4057 if (save_temps_flag)
4059 obstack_grow (&obstack, input_basename, basename_length);
4060 delete_this_arg = 0;
4064 struct temp_name *t;
4066 const char *suffix = p;
4067 char *saved_suffix = NULL;
4069 while (*p == '.' || ISALPHA ((unsigned char) *p))
4071 suffix_length = p - suffix;
4072 if (p[0] == '%' && p[1] == 'O')
4075 /* We don't support extra suffix characters after %O. */
4076 if (*p == '.' || ISALPHA ((unsigned char) *p))
4078 if (suffix_length == 0)
4079 suffix = OBJECT_SUFFIX;
4083 = (char *) xmalloc (suffix_length
4084 + strlen (OBJECT_SUFFIX));
4085 strncpy (saved_suffix, suffix, suffix_length);
4086 strcpy (saved_suffix + suffix_length,
4089 suffix_length += strlen (OBJECT_SUFFIX);
4092 /* See if we already have an association of %g/%u/%U and
4094 for (t = temp_names; t; t = t->next)
4095 if (t->length == suffix_length
4096 && strncmp (t->suffix, suffix, suffix_length) == 0
4097 && t->unique == (c != 'g'))
4100 /* Make a new association if needed. %u and %j require one. */
4101 if (t == 0 || c == 'u' || c == 'j')
4105 t = (struct temp_name *) xmalloc (sizeof (struct temp_name));
4106 t->next = temp_names;
4109 t->length = suffix_length;
4110 t->suffix = save_string (suffix, suffix_length);
4111 t->unique = (c != 'g');
4112 temp_filename = make_temp_file (t->suffix);
4113 temp_filename_length = strlen (temp_filename);
4114 t->filename = temp_filename;
4115 t->filename_length = temp_filename_length;
4119 free (saved_suffix);
4121 obstack_grow (&obstack, t->filename, t->filename_length);
4122 delete_this_arg = 1;
4128 obstack_grow (&obstack, input_filename, input_filename_length);
4134 struct prefix_list *pl = include_prefixes.plist;
4136 if (gcc_exec_prefix)
4138 do_spec_1 ("-iprefix", 1, NULL_PTR);
4139 /* Make this a separate argument. */
4140 do_spec_1 (" ", 0, NULL_PTR);
4141 do_spec_1 (gcc_exec_prefix, 1, NULL_PTR);
4142 do_spec_1 (" ", 0, NULL_PTR);
4145 for (; pl; pl = pl->next)
4147 do_spec_1 ("-isystem", 1, NULL_PTR);
4148 /* Make this a separate argument. */
4149 do_spec_1 (" ", 0, NULL_PTR);
4150 do_spec_1 (pl->prefix, 1, NULL_PTR);
4151 do_spec_1 (" ", 0, NULL_PTR);
4158 int max = n_infiles;
4159 max += lang_specific_extra_outfiles;
4161 for (i = 0; i < max; i++)
4163 store_arg (outfiles[i], 0, 0);
4168 obstack_grow (&obstack, OBJECT_SUFFIX, strlen (OBJECT_SUFFIX));
4173 this_is_library_file = 1;
4177 this_is_output_file = 1;
4182 int cur_index = argbuf_index;
4183 /* Handle the {...} following the %W. */
4186 p = handle_braces (p + 1);
4189 /* If any args were output, mark the last one for deletion
4191 if (argbuf_index != cur_index)
4192 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
4196 /* %x{OPTION} records OPTION for %X to output. */
4202 /* Skip past the option value and make a copy. */
4207 string = save_string (p1 + 1, p - p1 - 2);
4209 /* See if we already recorded this option. */
4210 for (i = 0; i < n_linker_options; i++)
4211 if (! strcmp (string, linker_options[i]))
4217 /* This option is new; add it. */
4218 add_linker_option (string, strlen (string));
4222 /* Dump out the options accumulated previously using %x. */
4224 for (i = 0; i < n_linker_options; i++)
4226 do_spec_1 (linker_options[i], 1, NULL_PTR);
4227 /* Make each accumulated option a separate argument. */
4228 do_spec_1 (" ", 0, NULL_PTR);
4232 /* Dump out the options accumulated previously using -Wa,. */
4234 for (i = 0; i < n_assembler_options; i++)
4236 do_spec_1 (assembler_options[i], 1, NULL_PTR);
4237 /* Make each accumulated option a separate argument. */
4238 do_spec_1 (" ", 0, NULL_PTR);
4242 /* Dump out the options accumulated previously using -Wp,. */
4244 for (i = 0; i < n_preprocessor_options; i++)
4246 do_spec_1 (preprocessor_options[i], 1, NULL_PTR);
4247 /* Make each accumulated option a separate argument. */
4248 do_spec_1 (" ", 0, NULL_PTR);
4252 /* Here are digits and numbers that just process
4253 a certain constant string as a spec. */
4256 value = do_spec_1 (cc1_spec, 0, NULL_PTR);
4262 value = do_spec_1 (cc1plus_spec, 0, NULL_PTR);
4268 value = do_spec_1 (asm_spec, 0, NULL_PTR);
4274 value = do_spec_1 (asm_final_spec, 0, NULL_PTR);
4280 value = do_spec_1 (signed_char_spec, 0, NULL_PTR);
4286 value = do_spec_1 (cpp_spec, 0, NULL_PTR);
4292 value = do_spec_1 (endfile_spec, 0, NULL_PTR);
4298 value = do_spec_1 (link_spec, 0, NULL_PTR);
4304 value = do_spec_1 (lib_spec, 0, NULL_PTR);
4310 value = do_spec_1 (libgcc_spec, 0, NULL_PTR);
4317 char *x = (char *) alloca (strlen (cpp_predefines) + 1);
4321 /* Copy all of the -D options in CPP_PREDEFINES into BUF. */
4325 if (! strncmp (y, "-D", 2))
4326 /* Copy the whole option. */
4327 while (*y && *y != ' ' && *y != '\t')
4329 else if (*y == ' ' || *y == '\t')
4330 /* Copy whitespace to the result. */
4332 /* Don't copy other options. */
4339 value = do_spec_1 (buf, 0, NULL_PTR);
4347 char *x = (char *) alloca (strlen (cpp_predefines) * 4 + 1);
4351 /* Copy all of CPP_PREDEFINES into BUF,
4352 but force them all into the reserved name space if they
4353 aren't already there. The reserved name space is all
4354 identifiers beginning with two underscores or with one
4355 underscore and a capital letter. We do the forcing by
4356 adding up to two underscores to the beginning and end
4357 of each symbol. e.g. mips, _mips, mips_, and _mips_ all
4362 if (! strncmp (y, "-D", 2))
4371 && ! ISUPPER ((unsigned char) *(y + 1))))
4373 /* Stick __ at front of macro name. */
4377 /* Arrange to stick __ at the end as well. */
4381 /* Copy the macro name. */
4382 while (*y && *y != '=' && *y != ' ' && *y != '\t')
4395 /* Copy the value given, if any. */
4396 while (*y && *y != ' ' && *y != '\t')
4399 else if (*y == ' ' || *y == '\t')
4400 /* Copy whitespace to the result. */
4402 /* Don't copy -A options */
4408 /* Copy all of CPP_PREDEFINES into BUF,
4409 but put __ after every -D. */
4413 if (! strncmp (y, "-D", 2))
4419 && ! ISUPPER ((unsigned char) *(y + 1))))
4421 /* Stick -D__ at front of macro name. */
4428 /* Copy the macro name. */
4429 while (*y && *y != '=' && *y != ' ' && *y != '\t')
4432 /* Copy the value given, if any. */
4433 while (*y && *y != ' ' && *y != '\t')
4438 /* Do not copy this macro - we have just done it before */
4439 while (*y && *y != ' ' && *y != '\t')
4443 else if (*y == ' ' || *y == '\t')
4444 /* Copy whitespace to the result. */
4446 /* Don't copy -A options. */
4452 /* Copy all of the -A options in CPP_PREDEFINES into BUF. */
4456 if (! strncmp (y, "-A", 2))
4457 /* Copy the whole option. */
4458 while (*y && *y != ' ' && *y != '\t')
4460 else if (*y == ' ' || *y == '\t')
4461 /* Copy whitespace to the result. */
4463 /* Don't copy other options. */
4470 value = do_spec_1 (buf, 0, NULL_PTR);
4477 value = do_spec_1 (startfile_spec, 0, NULL_PTR);
4482 /* Here we define characters other than letters and digits. */
4485 p = handle_braces (p);
4491 obstack_1grow (&obstack, '%');
4495 if (soft_matched_part)
4497 do_spec_1 (soft_matched_part, 1, NULL_PTR);
4498 do_spec_1 (" ", 0, NULL_PTR);
4501 /* Catch the case where a spec string contains something like
4502 '%{foo:%*}'. ie there is no * in the pattern on the left
4503 hand side of the :. */
4504 error ("Spec failure: '%%*' has not been initialised by pattern match");
4507 /* Process a string found as the value of a spec given by name.
4508 This feature allows individual machine descriptions
4509 to add and use their own specs.
4510 %[...] modifies -D options the way %P does;
4511 %(...) uses the spec unmodified. */
4513 error ("Warning: use of obsolete %%[ operator in specs");
4516 const char *name = p;
4517 struct spec_list *sl;
4520 /* The string after the S/P is the name of a spec that is to be
4522 while (*p && *p != ')' && *p != ']')
4525 /* See if it's in the list. */
4526 for (len = p - name, sl = specs; sl; sl = sl->next)
4527 if (sl->name_len == len && !strncmp (sl->name, name, len))
4529 name = *(sl->ptr_spec);
4531 notice ("Processing spec %c%s%c, which is '%s'\n",
4532 c, sl->name, (c == '(') ? ')' : ']', name);
4541 value = do_spec_1 (name, 0, NULL_PTR);
4547 char *x = (char *) alloca (strlen (name) * 2 + 1);
4549 const char *y = name;
4552 /* Copy all of NAME into BUF, but put __ after
4553 every -D and at the end of each arg. */
4556 if (! strncmp (y, "-D", 2))
4567 && (*y == ' ' || *y == '\t' || *y == '='
4568 || *y == '}' || *y == 0))
4581 value = do_spec_1 (buf, 0, NULL_PTR);
4587 /* Discard the closing paren or bracket. */
4595 int c1 = *p++; /* Select first or second version number. */
4596 const char *v = compiler_version;
4598 static const char zeroc = '0';
4600 /* The format of the version string is
4601 ([^0-9]*-)?[0-9]+[.][0-9]+([.][0-9]+)?([- ].*)? */
4603 /* Ignore leading non-digits. i.e. "foo-" in "foo-2.7.2". */
4604 while (! ISDIGIT (*v))
4606 if (v > compiler_version && v[-1] != '-')
4609 /* If desired, advance to second version number. */
4612 /* Set V after the first period. */
4613 while (ISDIGIT (*v))
4620 /* If desired, advance to third version number.
4621 But don't complain if it's not present */
4624 /* Set V after the second period. */
4625 while (ISDIGIT (*v))
4627 if ((*v != 0) && (*v != ' ') && (*v != '.') && (*v != '-'))
4633 /* Set Q at the next period or at the end. */
4635 while (ISDIGIT (*q))
4637 if (*q != 0 && q > v && *q != ' ' && *q != '.' && *q != '-')
4641 /* Put that part into the command. */
4642 obstack_grow (&obstack, v, q - v);
4644 /* Default to "0" */
4645 obstack_grow (&obstack, &zeroc, 1);
4651 if (input_from_pipe)
4652 do_spec_1 ("-", 0, NULL_PTR);
4656 error ("Spec failure: Unrecognised spec option '%c'", c);
4662 /* Backslash: treat next character as ordinary. */
4667 /* Ordinary character: put it into the current argument. */
4668 obstack_1grow (&obstack, c);
4672 /* End of string. */
4676 /* Return 0 if we call do_spec_1 and that returns -1. */
4680 register const char *p;
4682 const char *filter, *body = NULL, *endbody = NULL;
4686 int include_blanks = 1;
4687 int elide_switch = 0;
4691 /* A '^' after the open-brace means to not give blanks before args. */
4698 /* A `|' after the open-brace means,
4699 if the test fails, output a single minus sign rather than nothing.
4700 This is used in %{|!pipe:...}. */
4707 /* A `<' after the open-brace means that the switch should be
4708 removed from the command-line. */
4714 negate = suffix = 0;
4717 /* A `!' after the open-brace negates the condition:
4718 succeed if the specified switch is not present. */
4722 /* A `.' after the open-brace means test against the current suffix. */
4731 if (elide_switch && (negate || pipe_p || suffix))
4733 /* It doesn't make sense to mix elision with other flags. We
4734 could fatal() here, but the standard seems to be to abort. */
4739 while (*p != ':' && *p != '}' && *p != '|')
4742 if (*p == '|' && pipe_p)
4749 register int count = 1;
4750 register const char *q = p;
4769 body = p, endbody = p + 1;
4774 int found = (input_suffix != 0
4775 && (long) strlen (input_suffix) == (long) (p - filter)
4776 && strncmp (input_suffix, filter, p - filter) == 0);
4782 && do_spec_1 (save_string (body, endbody-body-1), 0, NULL_PTR) < 0)
4785 else if (p[-1] == '*' && p[0] == '}')
4787 /* Substitute all matching switches as separate args. */
4790 for (i = 0; i < n_switches; i++)
4791 if (!strncmp (switches[i].part1, filter, p - filter)
4792 && check_live_switch (i, p - filter))
4793 give_switch (i, 0, include_blanks);
4797 /* Test for presence of the specified switch. */
4801 /* If name specified ends in *, as in {x*:...},
4802 check for %* and handle that case. */
4803 if (p[-1] == '*' && !negate)
4806 const char *r = body;
4808 /* First see whether we have %*. */
4812 if (*r == '%' && r[1] == '*')
4816 /* If we do, handle that case. */
4819 /* Substitute all matching switches as separate args.
4820 But do this by substituting for %*
4821 in the text that follows the colon. */
4823 unsigned hard_match_len = p - filter - 1;
4824 char *string = save_string (body, endbody - body - 1);
4826 for (i = 0; i < n_switches; i++)
4827 if (!strncmp (switches[i].part1, filter, hard_match_len)
4828 && check_live_switch (i, -1))
4830 do_spec_1 (string, 0, &switches[i].part1[hard_match_len]);
4831 /* Pass any arguments this switch has. */
4832 give_switch (i, 1, 1);
4835 /* We didn't match. Try again. */
4842 /* If name specified ends in *, as in {x*:...},
4843 check for presence of any switch name starting with x. */
4846 for (i = 0; i < n_switches; i++)
4848 unsigned hard_match_len = p - filter - 1;
4850 if (!strncmp (switches[i].part1, filter, hard_match_len)
4851 && check_live_switch (i, hard_match_len))
4858 /* Otherwise, check for presence of exact name specified. */
4861 for (i = 0; i < n_switches; i++)
4863 if (!strncmp (switches[i].part1, filter, p - filter)
4864 && switches[i].part1[p - filter] == 0
4865 && check_live_switch (i, -1))
4873 /* If it is as desired (present for %{s...}, absent for %{!s...})
4874 then substitute either the switch or the specified
4875 conditional text. */
4876 if (present != negate)
4880 switches[i].live_cond = SWITCH_IGNORE;
4881 switches[i].validated = 1;
4885 give_switch (i, 0, include_blanks);
4889 if (do_spec_1 (save_string (body, endbody - body - 1),
4896 /* Here if a %{|...} conditional fails: output a minus sign,
4897 which means "standard output" or "standard input". */
4898 do_spec_1 ("-", 0, NULL_PTR);
4903 /* We didn't match; try again. */
4910 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
4911 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
4912 spec, or -1 if either exact match or %* is used.
4914 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
4915 whose value does not begin with "no-" is obsoleted by the same value
4916 with the "no-", similarly for a switch with the "no-" prefix. */
4919 check_live_switch (switchnum, prefix_length)
4923 const char *name = switches[switchnum].part1;
4926 /* In the common case of {<at-most-one-letter>*}, a negating
4927 switch would always match, so ignore that case. We will just
4928 send the conflicting switches to the compiler phase. */
4929 if (prefix_length >= 0 && prefix_length <= 1)
4932 /* If we already processed this switch and determined if it was
4933 live or not, return our past determination. */
4934 if (switches[switchnum].live_cond != 0)
4935 return switches[switchnum].live_cond > 0;
4937 /* Now search for duplicate in a manner that depends on the name. */
4941 for (i = switchnum + 1; i < n_switches; i++)
4942 if (switches[i].part1[0] == 'O')
4944 switches[switchnum].validated = 1;
4945 switches[switchnum].live_cond = SWITCH_FALSE;
4950 case 'W': case 'f': case 'm':
4951 if (! strncmp (name + 1, "no-", 3))
4953 /* We have Xno-YYY, search for XYYY. */
4954 for (i = switchnum + 1; i < n_switches; i++)
4955 if (switches[i].part1[0] == name[0]
4956 && ! strcmp (&switches[i].part1[1], &name[4]))
4958 switches[switchnum].validated = 1;
4959 switches[switchnum].live_cond = SWITCH_FALSE;
4965 /* We have XYYY, search for Xno-YYY. */
4966 for (i = switchnum + 1; i < n_switches; i++)
4967 if (switches[i].part1[0] == name[0]
4968 && switches[i].part1[1] == 'n'
4969 && switches[i].part1[2] == 'o'
4970 && switches[i].part1[3] == '-'
4971 && !strcmp (&switches[i].part1[4], &name[1]))
4973 switches[switchnum].validated = 1;
4974 switches[switchnum].live_cond = SWITCH_FALSE;
4981 /* Otherwise the switch is live. */
4982 switches[switchnum].live_cond = SWITCH_LIVE;
4986 /* Pass a switch to the current accumulating command
4987 in the same form that we received it.
4988 SWITCHNUM identifies the switch; it is an index into
4989 the vector of switches gcc received, which is `switches'.
4990 This cannot fail since it never finishes a command line.
4992 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument.
4994 If INCLUDE_BLANKS is nonzero, then we include blanks before each argument
4998 give_switch (switchnum, omit_first_word, include_blanks)
5000 int omit_first_word;
5003 if (switches[switchnum].live_cond == SWITCH_IGNORE)
5006 if (!omit_first_word)
5008 do_spec_1 ("-", 0, NULL_PTR);
5009 do_spec_1 (switches[switchnum].part1, 1, NULL_PTR);
5012 if (switches[switchnum].args != 0)
5015 for (p = switches[switchnum].args; *p; p++)
5018 do_spec_1 (" ", 0, NULL_PTR);
5019 do_spec_1 (*p, 1, NULL_PTR);
5023 do_spec_1 (" ", 0, NULL_PTR);
5024 switches[switchnum].validated = 1;
5027 /* Search for a file named NAME trying various prefixes including the
5028 user's -B prefix and some standard ones.
5029 Return the absolute file name found. If nothing is found, return NAME. */
5037 /* Try multilib_dir if it is defined. */
5038 if (multilib_dir != NULL)
5042 try = (char *) alloca (strlen (multilib_dir) + strlen (name) + 2);
5043 strcpy (try, multilib_dir);
5044 strcat (try, dir_separator_str);
5047 newname = find_a_file (&startfile_prefixes, try, R_OK);
5049 /* If we don't find it in the multi library dir, then fall
5050 through and look for it in the normal places. */
5051 if (newname != NULL)
5055 newname = find_a_file (&startfile_prefixes, name, R_OK);
5056 return newname ? newname : name;
5059 /* Determine whether a directory exists. If LINKER, return 0 for
5060 certain fixed names not needed by the linker. If not LINKER, it is
5061 only important to return 0 if the host machine has a small ARG_MAX
5065 is_directory (path1, path2, linker)
5070 int len1 = strlen (path1);
5071 int len2 = strlen (path2);
5072 char *path = (char *) alloca (3 + len1 + len2);
5076 #ifndef SMALL_ARG_MAX
5081 /* Construct the path from the two parts. Ensure the string ends with "/.".
5082 The resulting path will be a directory even if the given path is a
5084 memcpy (path, path1, len1);
5085 memcpy (path + len1, path2, len2);
5086 cp = path + len1 + len2;
5087 if (!IS_DIR_SEPARATOR (cp[-1]))
5088 *cp++ = DIR_SEPARATOR;
5092 /* Exclude directories that the linker is known to search. */
5095 && strcmp (path, concat (dir_separator_str, "lib",
5096 dir_separator_str, ".", NULL_PTR)) == 0)
5098 && strcmp (path, concat (dir_separator_str, "usr",
5099 dir_separator_str, "lib",
5100 dir_separator_str, ".", NULL_PTR)) == 0)))
5103 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5106 /* Set up the various global variables to indicate that we're processing
5107 the input file named FILENAME. */
5110 set_input (filename)
5111 const char *filename;
5113 register const char *p;
5115 input_filename = filename;
5116 input_filename_length = strlen (input_filename);
5118 input_basename = input_filename;
5119 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
5120 /* Skip drive name so 'x:foo' is handled properly. */
5121 if (input_basename[1] == ':')
5122 input_basename += 2;
5124 for (p = input_basename; *p; p++)
5125 if (IS_DIR_SEPARATOR (*p))
5126 input_basename = p + 1;
5128 /* Find a suffix starting with the last period,
5129 and set basename_length to exclude that suffix. */
5130 basename_length = strlen (input_basename);
5131 suffixed_basename_length = basename_length;
5132 p = input_basename + basename_length;
5133 while (p != input_basename && *p != '.')
5135 if (*p == '.' && p != input_basename)
5137 basename_length = p - input_basename;
5138 input_suffix = p + 1;
5144 /* On fatal signals, delete all the temporary files. */
5147 fatal_error (signum)
5150 signal (signum, SIG_DFL);
5151 delete_failure_queue ();
5152 delete_temp_files ();
5153 /* Get the same signal again, this time not handled,
5154 so its normal effect occurs. */
5155 kill (getpid (), signum);
5158 extern int main PARAMS ((int, const char *const *));
5163 const char *const *argv;
5167 int linker_was_run = 0;
5168 char *explicit_link_files;
5171 struct user_specs *uptr;
5173 p = argv[0] + strlen (argv[0]);
5174 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
5178 #ifdef GCC_DRIVER_HOST_INITIALIZATION
5179 /* Perform host dependant initialization when needed. */
5180 GCC_DRIVER_HOST_INITIALIZATION;
5183 #ifdef HAVE_LC_MESSAGES
5184 setlocale (LC_MESSAGES, "");
5186 (void) bindtextdomain (PACKAGE, localedir);
5187 (void) textdomain (PACKAGE);
5189 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
5190 signal (SIGINT, fatal_error);
5192 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
5193 signal (SIGHUP, fatal_error);
5195 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
5196 signal (SIGTERM, fatal_error);
5198 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
5199 signal (SIGPIPE, fatal_error);
5203 argbuf = (const char **) xmalloc (argbuf_length * sizeof (const char *));
5205 obstack_init (&obstack);
5207 /* Build multilib_select, et. al from the separate lines that make up each
5208 multilib selection. */
5210 const char *const *q = multilib_raw;
5213 obstack_init (&multilib_obstack);
5214 while ((p = *q++) != (char *) 0)
5215 obstack_grow (&multilib_obstack, p, strlen (p));
5217 obstack_1grow (&multilib_obstack, 0);
5218 multilib_select = obstack_finish (&multilib_obstack);
5220 q = multilib_matches_raw;
5221 while ((p = *q++) != (char *) 0)
5222 obstack_grow (&multilib_obstack, p, strlen (p));
5224 obstack_1grow (&multilib_obstack, 0);
5225 multilib_matches = obstack_finish (&multilib_obstack);
5227 q = multilib_exclusions_raw;
5228 while ((p = *q++) != (char *) 0)
5229 obstack_grow (&multilib_obstack, p, strlen (p));
5231 obstack_1grow (&multilib_obstack, 0);
5232 multilib_exclusions = obstack_finish (&multilib_obstack);
5235 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
5238 obstack_1grow (&multilib_obstack, ' ');
5239 obstack_grow (&multilib_obstack,
5240 multilib_defaults_raw[i],
5241 strlen (multilib_defaults_raw[i]));
5245 obstack_1grow (&multilib_obstack, 0);
5246 multilib_defaults = obstack_finish (&multilib_obstack);
5249 /* Set up to remember the pathname of gcc and any options
5250 needed for collect. We use argv[0] instead of programname because
5251 we need the complete pathname. */
5252 obstack_init (&collect_obstack);
5253 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
5254 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
5255 putenv (obstack_finish (&collect_obstack));
5257 #ifdef INIT_ENVIRONMENT
5258 /* Set up any other necessary machine specific environment variables. */
5259 putenv (INIT_ENVIRONMENT);
5262 /* Make a table of what switches there are (switches, n_switches).
5263 Make a table of specified input files (infiles, n_infiles).
5264 Decode switches that are handled locally. */
5266 process_command (argc, argv);
5271 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
5273 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
5274 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
5277 for (i = 0; (int) i < n_switches; i++)
5279 const char *const *args;
5282 obstack_grow (&collect_obstack, " ", 1);
5285 obstack_grow (&collect_obstack, "'-", 2);
5286 q = switches[i].part1;
5287 while ((p = index (q, '\'')))
5289 obstack_grow (&collect_obstack, q, p - q);
5290 obstack_grow (&collect_obstack, "'\\''", 4);
5293 obstack_grow (&collect_obstack, q, strlen (q));
5294 obstack_grow (&collect_obstack, "'", 1);
5296 for (args = switches[i].args; args && *args; args++)
5298 obstack_grow (&collect_obstack, " '", 2);
5300 while ((p = index (q, '\'')))
5302 obstack_grow (&collect_obstack, q, p - q);
5303 obstack_grow (&collect_obstack, "'\\''", 4);
5306 obstack_grow (&collect_obstack, q, strlen (q));
5307 obstack_grow (&collect_obstack, "'", 1);
5310 obstack_grow (&collect_obstack, "\0", 1);
5311 putenv (obstack_finish (&collect_obstack));
5314 /* Initialize the vector of specs to just the default.
5315 This means one element containing 0s, as a terminator. */
5317 compilers = (struct compiler *) xmalloc (sizeof default_compilers);
5318 bcopy ((char *) default_compilers, (char *) compilers,
5319 sizeof default_compilers);
5320 n_compilers = n_default_compilers;
5322 /* Read specs from a file if there is one. */
5324 machine_suffix = concat (spec_machine, dir_separator_str,
5325 spec_version, dir_separator_str, NULL_PTR);
5326 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL_PTR);
5328 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK);
5329 /* Read the specs file unless it is a default one. */
5330 if (specs_file != 0 && strcmp (specs_file, "specs"))
5331 read_specs (specs_file, TRUE);
5335 /* We need to check standard_exec_prefix/just_machine_suffix/specs
5336 for any override of as, ld and libraries. */
5337 specs_file = (char *) alloca (strlen (standard_exec_prefix)
5338 + strlen (just_machine_suffix)
5339 + sizeof ("specs"));
5341 strcpy (specs_file, standard_exec_prefix);
5342 strcat (specs_file, just_machine_suffix);
5343 strcat (specs_file, "specs");
5344 if (access (specs_file, R_OK) == 0)
5345 read_specs (specs_file, TRUE);
5347 /* If not cross-compiling, look for startfiles in the standard places. */
5348 if (*cross_compile == '0')
5350 if (*md_exec_prefix)
5352 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
5353 PREFIX_PRIORITY_LAST, 0, NULL_PTR);
5354 add_prefix (&startfile_prefixes, md_exec_prefix, "GCC",
5355 PREFIX_PRIORITY_LAST, 0, NULL_PTR);
5358 if (*md_startfile_prefix)
5359 add_prefix (&startfile_prefixes, md_startfile_prefix, "GCC",
5360 PREFIX_PRIORITY_LAST, 0, NULL_PTR);
5362 if (*md_startfile_prefix_1)
5363 add_prefix (&startfile_prefixes, md_startfile_prefix_1, "GCC",
5364 PREFIX_PRIORITY_LAST, 0, NULL_PTR);
5366 /* If standard_startfile_prefix is relative, base it on
5367 standard_exec_prefix. This lets us move the installed tree
5368 as a unit. If GCC_EXEC_PREFIX is defined, base
5369 standard_startfile_prefix on that as well. */
5370 if (IS_DIR_SEPARATOR (*standard_startfile_prefix)
5371 || *standard_startfile_prefix == '$'
5372 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
5373 /* Check for disk name on MS-DOS-based systems. */
5374 || (standard_startfile_prefix[1] == ':'
5375 && (IS_DIR_SEPARATOR (standard_startfile_prefix[2])))
5378 add_prefix (&startfile_prefixes, standard_startfile_prefix, "BINUTILS",
5379 PREFIX_PRIORITY_LAST, 0, NULL_PTR);
5382 if (gcc_exec_prefix)
5383 add_prefix (&startfile_prefixes,
5384 concat (gcc_exec_prefix, machine_suffix,
5385 standard_startfile_prefix, NULL_PTR),
5386 NULL_PTR, PREFIX_PRIORITY_LAST, 0, NULL_PTR);
5387 add_prefix (&startfile_prefixes,
5388 concat (standard_exec_prefix,
5390 standard_startfile_prefix, NULL_PTR),
5391 NULL_PTR, PREFIX_PRIORITY_LAST, 0, NULL_PTR);
5394 add_prefix (&startfile_prefixes, standard_startfile_prefix_1,
5395 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL_PTR);
5396 add_prefix (&startfile_prefixes, standard_startfile_prefix_2,
5397 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL_PTR);
5398 #if 0 /* Can cause surprises, and one can use -B./ instead. */
5399 add_prefix (&startfile_prefixes, "./", NULL_PTR,
5400 PREFIX_PRIORITY_LAST, 1, NULL_PTR);
5405 if (!IS_DIR_SEPARATOR (*standard_startfile_prefix) && gcc_exec_prefix)
5406 add_prefix (&startfile_prefixes,
5407 concat (gcc_exec_prefix, machine_suffix,
5408 standard_startfile_prefix, NULL_PTR),
5409 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL_PTR);
5412 /* Process any user specified specs in the order given on the command
5414 for (uptr = user_specs_head; uptr; uptr = uptr->next)
5416 char *filename = find_a_file (&startfile_prefixes, uptr->filename, R_OK);
5417 read_specs (filename ? filename : uptr->filename, FALSE);
5420 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
5421 if (gcc_exec_prefix)
5423 char *temp = (char *) xmalloc (strlen (gcc_exec_prefix)
5424 + strlen (spec_version)
5425 + strlen (spec_machine) + 3);
5426 strcpy (temp, gcc_exec_prefix);
5427 strcat (temp, spec_machine);
5428 strcat (temp, dir_separator_str);
5429 strcat (temp, spec_version);
5430 strcat (temp, dir_separator_str);
5431 gcc_exec_prefix = temp;
5434 /* Now we have the specs.
5435 Set the `valid' bits for switches that match anything in any spec. */
5437 validate_all_switches ();
5439 /* Now that we have the switches and the specs, set
5440 the subdirectory based on the options. */
5441 set_multilib_dir ();
5443 /* Warn about any switches that no pass was interested in. */
5445 for (i = 0; (int) i < n_switches; i++)
5446 if (! switches[i].validated)
5447 error ("unrecognized option `-%s'", switches[i].part1);
5449 /* Obey some of the options. */
5451 if (print_search_dirs)
5453 printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix);
5454 printf (_("programs: %s\n"), build_search_list (&exec_prefixes, "", 0));
5455 printf (_("libraries: %s\n"), build_search_list (&startfile_prefixes, "", 0));
5459 if (print_file_name)
5461 printf ("%s\n", find_file (print_file_name));
5465 if (print_prog_name)
5467 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK);
5468 printf ("%s\n", (newname ? newname : print_prog_name));
5472 if (print_multi_lib)
5474 print_multilib_info ();
5478 if (print_multi_directory)
5480 if (multilib_dir == NULL)
5483 printf ("%s\n", multilib_dir);
5487 if (print_help_list)
5493 printf (_("\nFor bug reporting instructions, please see:\n"));
5494 printf ("%s.\n", GCCBUGURL);
5499 /* We do not exit here. Instead we have created a fake input file
5500 called 'help-dummy' which needs to be compiled, and we pass this
5501 on the the various sub-processes, along with the --help switch. */
5508 /* compiler_version is truncated at the first space when initialized
5509 from version string, so truncate version_string at the first space
5510 before comparing. */
5511 for (n = 0; version_string[n]; n++)
5512 if (version_string[n] == ' ')
5515 if (! strncmp (version_string, compiler_version, n)
5516 && compiler_version[n] == 0)
5517 notice ("gcc version %s\n", version_string);
5519 notice ("gcc driver version %s executing gcc version %s\n",
5520 version_string, compiler_version);
5526 if (n_infiles == added_libraries)
5527 fatal ("No input files");
5529 /* Make a place to record the compiler output file names
5530 that correspond to the input files. */
5533 i += lang_specific_extra_outfiles;
5534 outfiles = (const char **) xcalloc (i, sizeof (char *));
5536 /* Record which files were specified explicitly as link input. */
5538 explicit_link_files = xcalloc (1, n_infiles);
5540 for (i = 0; (int) i < n_infiles; i++)
5542 register struct compiler *cp = 0;
5543 int this_file_error = 0;
5545 /* Tell do_spec what to substitute for %i. */
5547 input_file_number = i;
5548 set_input (infiles[i].name);
5550 /* Use the same thing in %o, unless cp->spec says otherwise. */
5552 outfiles[i] = input_filename;
5554 /* Figure out which compiler from the file's suffix. */
5556 cp = lookup_compiler (infiles[i].name, input_filename_length,
5557 infiles[i].language);
5561 /* Ok, we found an applicable compiler. Run its spec. */
5563 if (cp->spec[0] == '#')
5564 error ("%s: %s compiler not installed on this system",
5565 input_filename, &cp->spec[1]);
5566 value = do_spec (cp->spec);
5568 this_file_error = 1;
5571 /* If this file's name does not contain a recognized suffix,
5572 record it as explicit linker input. */
5575 explicit_link_files[i] = 1;
5577 /* Clear the delete-on-failure queue, deleting the files in it
5578 if this compilation failed. */
5580 if (this_file_error)
5582 delete_failure_queue ();
5585 /* If this compilation succeeded, don't delete those files later. */
5586 clear_failure_queue ();
5589 /* Reset the output file name to the first input file name, for use
5590 with %b in LINK_SPEC on a target that prefers not to emit a.out
5593 set_input (infiles[0].name);
5595 if (error_count == 0)
5597 /* Make sure INPUT_FILE_NUMBER points to first available open
5599 input_file_number = n_infiles;
5600 if (lang_specific_pre_link ())
5604 /* Run ld to link all the compiler output files. */
5606 if (error_count == 0)
5608 int tmp = execution_count;
5610 /* We'll use ld if we can't find collect2. */
5611 if (! strcmp (linker_name_spec, "collect2"))
5613 char *s = find_a_file (&exec_prefixes, "collect2", X_OK);
5615 linker_name_spec = "ld";
5617 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
5619 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH");
5620 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV);
5622 value = do_spec (link_command_spec);
5625 linker_was_run = (tmp != execution_count);
5628 /* If options said don't run linker,
5629 complain about input files to be given to the linker. */
5631 if (! linker_was_run && error_count == 0)
5632 for (i = 0; (int) i < n_infiles; i++)
5633 if (explicit_link_files[i])
5634 error ("%s: linker input file unused since linking not done",
5637 /* Delete some or all of the temporary files we made. */
5640 delete_failure_queue ();
5641 delete_temp_files ();
5643 if (print_help_list)
5645 printf (("\nFor bug reporting instructions, please see:\n"));
5646 printf ("%s\n", GCCBUGURL);
5649 return (signal_count != 0 ? 2
5650 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
5654 /* Find the proper compilation spec for the file name NAME,
5655 whose length is LENGTH. LANGUAGE is the specified language,
5656 or 0 if this file is to be passed to the linker. */
5658 static struct compiler *
5659 lookup_compiler (name, length, language)
5662 const char *language;
5664 struct compiler *cp;
5666 /* If this was specified by the user to be a linker input, indicate that. */
5667 if (language != 0 && language[0] == '*')
5670 /* Otherwise, look for the language, if one is spec'd. */
5673 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
5674 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
5677 error ("language %s not recognized", language);
5681 /* Look for a suffix. */
5682 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
5684 if (/* The suffix `-' matches only the file name `-'. */
5685 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
5686 || (strlen (cp->suffix) < length
5687 /* See if the suffix matches the end of NAME. */
5688 && !strcmp (cp->suffix,
5689 name + length - strlen (cp->suffix))
5694 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
5695 /* look again, but case-insensitively this time. */
5697 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
5699 if (/* The suffix `-' matches only the file name `-'. */
5700 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
5701 || (strlen (cp->suffix) < length
5702 /* See if the suffix matches the end of NAME. */
5703 && ((!strcmp (cp->suffix,
5704 name + length - strlen (cp->suffix))
5705 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
5706 && !strcasecmp (cp->suffix,
5707 name + length - strlen (cp->suffix)))
5713 if (cp >= compilers)
5715 if (cp->spec[0] != '@')
5716 /* A non-alias entry: return it. */
5719 /* An alias entry maps a suffix to a language.
5720 Search for the language; pass 0 for NAME and LENGTH
5721 to avoid infinite recursion if language not found. */
5722 return lookup_compiler (NULL_PTR, 0, cp->spec + 1);
5728 save_string (s, len)
5732 register char *result = xmalloc (len + 1);
5734 bcopy (s, result, len);
5740 pfatal_with_name (name)
5743 perror_with_name (name);
5744 delete_temp_files ();
5749 perror_with_name (name)
5752 error ("%s: %s", name, xstrerror (errno));
5756 pfatal_pexecute (errmsg_fmt, errmsg_arg)
5757 const char *errmsg_fmt;
5758 const char *errmsg_arg;
5762 int save_errno = errno;
5764 /* Space for trailing '\0' is in %s. */
5765 char *msg = xmalloc (strlen (errmsg_fmt) + strlen (errmsg_arg));
5766 sprintf (msg, errmsg_fmt, errmsg_arg);
5772 pfatal_with_name (errmsg_fmt);
5775 /* Output an error message and exit */
5780 fatal ("Internal gcc abort.");
5783 /* Output an error message and exit */
5786 fatal VPARAMS ((const char *msgid, ...))
5788 #ifndef ANSI_PROTOTYPES
5793 VA_START (ap, msgid);
5795 #ifndef ANSI_PROTOTYPES
5796 msgid = va_arg (ap, const char *);
5799 fprintf (stderr, "%s: ", programname);
5800 vfprintf (stderr, _(msgid), ap);
5802 fprintf (stderr, "\n");
5803 delete_temp_files ();
5808 error VPARAMS ((const char *msgid, ...))
5810 #ifndef ANSI_PROTOTYPES
5815 VA_START (ap, msgid);
5817 #ifndef ANSI_PROTOTYPES
5818 msgid = va_arg (ap, const char *);
5821 fprintf (stderr, "%s: ", programname);
5822 vfprintf (stderr, _(msgid), ap);
5825 fprintf (stderr, "\n");
5829 notice VPARAMS ((const char *msgid, ...))
5831 #ifndef ANSI_PROTOTYPES
5836 VA_START (ap, msgid);
5838 #ifndef ANSI_PROTOTYPES
5839 msgid = va_arg (ap, const char *);
5842 vfprintf (stderr, _(msgid), ap);
5847 validate_all_switches ()
5849 struct compiler *comp;
5850 register const char *p;
5852 struct spec_list *spec;
5854 for (comp = compilers; comp->spec; comp++)
5858 if (c == '%' && *p == '{')
5859 /* We have a switch spec. */
5860 validate_switches (p + 1);
5863 /* Look through the linked list of specs read from the specs file. */
5864 for (spec = specs; spec; spec = spec->next)
5866 p = *(spec->ptr_spec);
5868 if (c == '%' && *p == '{')
5869 /* We have a switch spec. */
5870 validate_switches (p + 1);
5873 p = link_command_spec;
5875 if (c == '%' && *p == '{')
5876 /* We have a switch spec. */
5877 validate_switches (p + 1);
5880 /* Look at the switch-name that comes after START
5881 and mark as valid all supplied switches that match it. */
5884 validate_switches (start)
5887 register const char *p = start;
5902 while (*p != ':' && *p != '}')
5907 else if (p[-1] == '*')
5909 /* Mark all matching switches as valid. */
5911 for (i = 0; i < n_switches; i++)
5912 if (!strncmp (switches[i].part1, filter, p - filter))
5913 switches[i].validated = 1;
5917 /* Mark an exact matching switch as valid. */
5918 for (i = 0; i < n_switches; i++)
5920 if (!strncmp (switches[i].part1, filter, p - filter)
5921 && switches[i].part1[p - filter] == 0)
5922 switches[i].validated = 1;
5927 /* Check whether a particular argument was used. The first time we
5928 canonicalize the switches to keep only the ones we care about. */
5938 const char *replace;
5943 static struct mswitchstr *mswitches;
5944 static int n_mswitches;
5949 struct mswitchstr *matches;
5953 /* Break multilib_matches into the component strings of string
5954 and replacement string. */
5955 for (q = multilib_matches; *q != '\0'; q++)
5960 (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
5962 q = multilib_matches;
5972 matches[i].len = q - matches[i].str;
5974 matches[i].replace = ++q;
5975 while (*q != ';' && *q != '\0')
5981 matches[i].rep_len = q - matches[i].replace;
5987 /* Now build a list of the replacement string for switches that we care
5988 about. Make sure we allocate at least one entry. This prevents
5989 xmalloc from calling fatal, and prevents us from re-executing this
5992 = (struct mswitchstr *) xmalloc ((sizeof (struct mswitchstr))
5993 * (n_switches ? n_switches : 1));
5994 for (i = 0; i < n_switches; i++)
5996 int xlen = strlen (switches[i].part1);
5997 for (j = 0; j < cnt; j++)
5998 if (xlen == matches[j].len
5999 && ! strncmp (switches[i].part1, matches[j].str, xlen))
6001 mswitches[n_mswitches].str = matches[j].replace;
6002 mswitches[n_mswitches].len = matches[j].rep_len;
6003 mswitches[n_mswitches].replace = (char *) 0;
6004 mswitches[n_mswitches].rep_len = 0;
6011 for (i = 0; i < n_mswitches; i++)
6012 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
6019 default_arg (p, len)
6023 const char *start, *end;
6025 for (start = multilib_defaults; *start != '\0'; start = end + 1)
6027 while (*start == ' ' || *start == '\t')
6033 for (end = start + 1; *end != ' ' && *end != '\t' && *end != '\0'; end++)
6036 if ((end - start) == len && strncmp (p, start, len) == 0)
6046 /* Work out the subdirectory to use based on the options. The format of
6047 multilib_select is a list of elements. Each element is a subdirectory
6048 name followed by a list of options followed by a semicolon. The format
6049 of multilib_exclusions is the same, but without the preceding
6050 directory. First gcc will check the exclusions, if none of the options
6051 beginning with an exclamation point are present, and all of the other
6052 options are present, then we will ignore this completely. Passing
6053 that, gcc will consider each multilib_select in turn using the same
6054 rules for matching the options. If a match is found, that subdirectory
6061 unsigned int this_path_len;
6062 const char *this_path, *this_arg;
6066 p = multilib_exclusions;
6069 /* Ignore newlines. */
6076 /* Check the arguments. */
6090 while (*p != ' ' && *p != ';')
6097 if (*this_arg != '!')
6105 ok = used_arg (this_arg, p - this_arg);
6119 p = multilib_select;
6122 /* Ignore newlines. */
6129 /* Get the initial path. */
6137 this_path_len = p - this_path;
6139 /* Check the arguments. */
6154 while (*p != ' ' && *p != ';')
6161 if (*this_arg != '!')
6169 /* If this is a default argument, we can just ignore it.
6170 This is true even if this_arg begins with '!'. Beginning
6171 with '!' does not mean that this argument is necessarily
6172 inappropriate for this library: it merely means that
6173 there is a more specific library which uses this
6174 argument. If this argument is a default, we need not
6175 consider that more specific library. */
6176 if (! default_arg (this_arg, p - this_arg))
6178 ok = used_arg (this_arg, p - this_arg);
6189 if (this_path_len != 1
6190 || this_path[0] != '.')
6192 char *new_multilib_dir = xmalloc (this_path_len + 1);
6193 strncpy (new_multilib_dir, this_path, this_path_len);
6194 new_multilib_dir[this_path_len] = '\0';
6195 multilib_dir = new_multilib_dir;
6204 /* Print out the multiple library subdirectory selection
6205 information. This prints out a series of lines. Each line looks
6206 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
6207 required. Only the desired options are printed out, the negative
6208 matches. The options are print without a leading dash. There are
6209 no spaces to make it easy to use the information in the shell.
6210 Each subdirectory is printed only once. This assumes the ordering
6211 generated by the genmultilib script. Also, we leave out ones that match
6215 print_multilib_info ()
6217 const char *p = multilib_select;
6218 const char *last_path = 0, *this_path;
6220 unsigned int last_path_len = 0;
6225 /* Ignore newlines. */
6232 /* Get the initial path. */
6241 /* Check for matches with the multilib_exclusions. We don't bother
6242 with the '!' in either list. If any of the exclusion rules match
6243 all of its options with the select rule, we skip it. */
6245 const char *e = multilib_exclusions;
6246 const char *this_arg;
6251 /* Ignore newlines. */
6258 /* Check the arguments. */
6275 while (*e != ' ' && *e != ';')
6286 int len = e - this_arg;
6293 while (*q != ' ' && *q != ';')
6300 if (! strncmp (arg, this_arg, (len < q - arg) ? q - arg : len) ||
6301 default_arg (this_arg, e - this_arg))
6331 /* If this is a duplicate, skip it. */
6332 skip = (last_path != 0 && (unsigned int) (p - this_path) == last_path_len
6333 && ! strncmp (last_path, this_path, last_path_len));
6335 last_path = this_path;
6336 last_path_len = p - this_path;
6339 /* If this directory requires any default arguments, we can skip
6340 it. We will already have printed a directory identical to
6341 this one which does not require that default argument. */
6359 while (*q != ' ' && *q != ';')
6367 && default_arg (arg, q - arg))
6382 for (p1 = last_path; p1 < p; p1++)
6401 use_arg = *p != '!';
6406 while (*p != ' ' && *p != ';')
6421 /* If there are extra options, print them now. */
6422 if (multilib_extra && *multilib_extra)
6424 int print_at = TRUE;
6427 for (q = multilib_extra; *q != '\0'; q++)