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 /* Definition of string containing the arguments given to configure. */
104 #include "configargs.h"
106 /* Flag saying to print the directories gcc will search through looking for
107 programs, libraries, etc. */
109 static int print_search_dirs;
111 /* Flag saying to print the full filename of this file
112 as found through our usual search mechanism. */
114 static const char *print_file_name = NULL;
116 /* As print_file_name, but search for executable file. */
118 static const char *print_prog_name = NULL;
120 /* Flag saying to print the relative path we'd use to
121 find libgcc.a given the current compiler flags. */
123 static int print_multi_directory;
125 /* Flag saying to print the list of subdirectories and
126 compiler flags used to select them in a standard form. */
128 static int print_multi_lib;
130 /* Flag saying to print the command line options understood by gcc and its
133 static int print_help_list;
135 /* Flag indicating whether we should print the command and arguments */
137 static int verbose_flag;
139 /* Flag indicating to print target specific command line options. */
141 static int target_help_flag;
143 /* Flag indicating whether we should report subprocess execution times
144 (if this is supported by the system - see pexecute.c). */
146 static int report_times;
148 /* Nonzero means write "temp" files in source directory
149 and use the source file's name in them, and don't delete them. */
151 static int save_temps_flag;
153 /* The compiler version. */
155 static const char *compiler_version;
157 /* The target version specified with -V */
159 static const char *spec_version = DEFAULT_TARGET_VERSION;
161 /* The target machine specified with -b. */
163 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
165 /* Nonzero if cross-compiling.
166 When -b is used, the value comes from the `specs' file. */
169 static const char *cross_compile = "1";
171 static const char *cross_compile = "0";
174 #ifdef MODIFY_TARGET_NAME
176 /* Information on how to alter the target name based on a command-line
177 switch. The only case we support now is simply appending or deleting a
178 string to or from the end of the first part of the configuration name. */
183 enum add_del {ADD, DELETE} add_del;
186 modify_target[] = MODIFY_TARGET_NAME;
189 /* The number of errors that have occurred; the link phase will not be
190 run if this is non-zero. */
191 static int error_count = 0;
193 /* Greatest exit code of sub-processes that has been encountered up to
195 static int greatest_status = 1;
197 /* This is the obstack which we use to allocate many strings. */
199 static struct obstack obstack;
201 /* This is the obstack to build an environment variable to pass to
202 collect2 that describes all of the relevant switches of what to
203 pass the compiler in building the list of pointers to constructors
206 static struct obstack collect_obstack;
208 /* These structs are used to collect resource usage information for
210 #ifdef HAVE_GETRUSAGE
211 static struct rusage rus, prus;
214 /* Forward declaration for prototypes. */
217 static void init_spec PARAMS ((void));
219 static char **split_directories PARAMS ((const char *, int *));
220 static void free_split_directories PARAMS ((char **));
221 static char *make_relative_prefix PARAMS ((const char *, const char *, const char *));
223 static void store_arg PARAMS ((const char *, int, int));
224 static char *load_specs PARAMS ((const char *));
225 static void read_specs PARAMS ((const char *, int));
226 static void set_spec PARAMS ((const char *, const char *));
227 static struct compiler *lookup_compiler PARAMS ((const char *, size_t, const char *));
228 static char *build_search_list PARAMS ((struct path_prefix *, const char *, int));
229 static void putenv_from_prefixes PARAMS ((struct path_prefix *, const char *));
230 static int access_check PARAMS ((const char *, int));
231 static char *find_a_file PARAMS ((struct path_prefix *, const char *, int));
232 static void add_prefix PARAMS ((struct path_prefix *, const char *,
233 const char *, int, int, int *));
234 static void translate_options PARAMS ((int *, const char *const **));
235 static char *skip_whitespace PARAMS ((char *));
236 static void record_temp_file PARAMS ((const char *, int, int));
237 static void delete_if_ordinary PARAMS ((const char *));
238 static void delete_temp_files PARAMS ((void));
239 static void delete_failure_queue PARAMS ((void));
240 static void clear_failure_queue PARAMS ((void));
241 static int check_live_switch PARAMS ((int, int));
242 static const char *handle_braces PARAMS ((const char *));
243 static char *save_string PARAMS ((const char *, int));
244 static int do_spec_1 PARAMS ((const char *, int, const char *));
245 static const char *find_file PARAMS ((const char *));
246 static int is_directory PARAMS ((const char *, const char *, int));
247 static void validate_switches PARAMS ((const char *));
248 static void validate_all_switches PARAMS ((void));
249 static void give_switch PARAMS ((int, int, int));
250 static int used_arg PARAMS ((const char *, int));
251 static int default_arg PARAMS ((const char *, int));
252 static void set_multilib_dir PARAMS ((void));
253 static void print_multilib_info PARAMS ((void));
254 static void pfatal_with_name PARAMS ((const char *)) ATTRIBUTE_NORETURN;
255 static void perror_with_name PARAMS ((const char *));
256 static void pfatal_pexecute PARAMS ((const char *, const char *))
258 static void error PARAMS ((const char *, ...))
260 static void notice PARAMS ((const char *, ...))
262 static void display_help PARAMS ((void));
263 static void add_preprocessor_option PARAMS ((const char *, int));
264 static void add_assembler_option PARAMS ((const char *, int));
265 static void add_linker_option PARAMS ((const char *, int));
266 static void process_command PARAMS ((int, const char *const *));
267 static int execute PARAMS ((void));
268 static void clear_args PARAMS ((void));
269 static void fatal_error PARAMS ((int));
270 static void set_input PARAMS ((const char *));
272 /* Specs are strings containing lines, each of which (if not blank)
273 is made up of a program name, and arguments separated by spaces.
274 The program name must be exact and start from root, since no path
275 is searched and it is unreliable to depend on the current working directory.
276 Redirection of input or output is not supported; the subprograms must
277 accept filenames saying what files to read and write.
279 In addition, the specs can contain %-sequences to substitute variable text
280 or for conditional text. Here is a table of all defined %-sequences.
281 Note that spaces are not generated automatically around the results of
282 expanding these sequences; therefore, you can concatenate them together
283 or with constant text in a single argument.
285 %% substitute one % into the program name or argument.
286 %i substitute the name of the input file being processed.
287 %b substitute the basename of the input file being processed.
288 This is the substring up to (and not including) the last period
289 and not including the directory.
290 %B same as %b, but include the file suffix (text after the last period).
292 substitute a file name that has suffix SUFFIX and is chosen
293 once per compilation, and mark the argument a la %d. To reduce
294 exposure to denial-of-service attacks, the file name is now
295 chosen in a way that is hard to predict even when previously
296 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
297 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
298 the regexp "[.A-Za-z]*%O"; "%O" is treated exactly as if it
299 had been pre-processed. Previously, %g was simply substituted
300 with a file name chosen once per compilation, without regard
301 to any appended suffix (which was therefore treated just like
302 ordinary text), making such attacks more likely to succeed.
304 like %g, but generates a new temporary file name even if %uSUFFIX
307 substitutes the last file name generated with %uSUFFIX, generating a
308 new one if there is no such last file name. In the absence of any
309 %uSUFFIX, this is just like %gSUFFIX, except they don't share
310 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
311 would involve the generation of two distinct file names, one
312 for each `%g.s' and another for each `%U.s'. Previously, %U was
313 simply substituted with a file name chosen for the previous %u,
314 without regard to any appended suffix.
316 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
317 writable, and if save-temps is off; otherwise, substitute the name
318 of a temporary file, just like %u. This temporary file is not
319 meant for communication between processes, but rather as a junk
321 %d marks the argument containing or following the %d as a
322 temporary file name, so that that file will be deleted if CC exits
323 successfully. Unlike %g, this contributes no text to the argument.
324 %w marks the argument containing or following the %w as the
325 "output file" of this compilation. This puts the argument
326 into the sequence of arguments that %o will substitute later.
328 like %{...} but mark last argument supplied within
329 as a file to be deleted on failure.
330 %o substitutes the names of all the output files, with spaces
331 automatically placed around them. You should write spaces
332 around the %o as well or the results are undefined.
333 %o is for use in the specs for running the linker.
334 Input files whose names have no recognized suffix are not compiled
335 at all, but they are included among the output files, so they will
337 %O substitutes the suffix for object files. Note that this is
338 handled specially when it immediately follows %g, %u, or %U
339 (with or without a suffix argument) because of the need for
340 those to form complete file names. The handling is such that
341 %O is treated exactly as if it had already been substituted,
342 except that %g, %u, and %U do not currently support additional
343 SUFFIX characters following %O as they would following, for
345 %p substitutes the standard macro predefinitions for the
346 current target machine. Use this when running cpp.
347 %P like %p, but puts `__' before and after the name of each macro.
348 (Except macros that already have __.)
350 %I Substitute a -iprefix option made from GCC_EXEC_PREFIX.
351 %s current argument is the name of a library or startup file of some sort.
352 Search for that file in a standard list of directories
353 and substitute the full name found.
354 %eSTR Print STR as an error message. STR is terminated by a newline.
355 Use this when inconsistent options are detected.
356 %x{OPTION} Accumulate an option for %X.
357 %X Output the accumulated linker options specified by compilations.
358 %Y Output the accumulated assembler options specified by compilations.
359 %Z Output the accumulated preprocessor options specified by compilations.
360 %v1 Substitute the major version number of GCC.
361 (For version 2.5.3, this is 2.)
362 %v2 Substitute the minor version number of GCC.
363 (For version 2.5.3, this is 5.)
364 %v3 Substitute the patch level number of GCC.
365 (For version 2.5.3, this is 3.)
366 %a process ASM_SPEC as a spec.
367 This allows config.h to specify part of the spec for running as.
368 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
369 used here. This can be used to run a post-processor after the
370 assembler has done its job.
371 %D Dump out a -L option for each directory in startfile_prefixes.
372 If multilib_dir is set, extra entries are generated with it affixed.
373 %l process LINK_SPEC as a spec.
374 %L process LIB_SPEC as a spec.
375 %G process LIBGCC_SPEC as a spec.
376 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
377 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
378 %c process SIGNED_CHAR_SPEC as a spec.
379 %C process CPP_SPEC as a spec. A capital C is actually used here.
380 %1 process CC1_SPEC as a spec.
381 %2 process CC1PLUS_SPEC as a spec.
382 %| output "-" if the input for the current command is coming from a pipe.
383 %* substitute the variable part of a matched option. (See below.)
384 Note that each comma in the substituted string is replaced by
386 %{S} substitutes the -S switch, if that switch was given to CC.
387 If that switch was not specified, this substitutes nothing.
388 Here S is a metasyntactic variable.
389 %{S*} substitutes all the switches specified to CC whose names start
390 with -S. This is used for -o, -D, -I, etc; switches that take
391 arguments. CC considers `-o foo' as being one switch whose
392 name starts with `o'. %{o*} would substitute this text,
393 including the space; thus, two arguments would be generated.
394 %{^S*} likewise, but don't put a blank between a switch and any args.
395 %{S*:X} substitutes X if one or more switches whose names start with -S are
396 specified to CC. Note that the tail part of the -S option
397 (i.e. the part matched by the `*') will be substituted for each
398 occurrence of %* within X.
399 %{<S} remove all occurences of -S from the command line.
400 Note - this option is position dependent. % commands in the
401 spec string before this option will see -S, % commands in the
402 spec string after this option will not.
403 %{S:X} substitutes X, but only if the -S switch was given to CC.
404 %{!S:X} substitutes X, but only if the -S switch was NOT given to CC.
405 %{|S:X} like %{S:X}, but if no S switch, substitute `-'.
406 %{|!S:X} like %{!S:X}, but if there is an S switch, substitute `-'.
407 %{.S:X} substitutes X, but only if processing a file with suffix S.
408 %{!.S:X} substitutes X, but only if NOT processing a file with suffix S.
409 %{S|P:X} substitutes X if either -S or -P was given to CC. This may be
410 combined with ! and . as above binding stronger than the OR.
411 %(Spec) processes a specification defined in a specs file as *Spec:
412 %[Spec] as above, but put __ around -D arguments
414 The conditional text X in a %{S:X} or %{!S:X} construct may contain
415 other nested % constructs or spaces, or even newlines. They are
416 processed as usual, as described above.
418 The -O, -f, -m, and -W switches are handled specifically in these
419 constructs. If another value of -O or the negated form of a -f, -m, or
420 -W switch is found later in the command line, the earlier switch
421 value is ignored, except with {S*} where S is just one letter; this
422 passes all matching options.
424 The character | at the beginning of the predicate text is used to indicate
425 that a command should be piped to the following command, but only if -pipe
428 Note that it is built into CC which switches take arguments and which
429 do not. You might think it would be useful to generalize this to
430 allow each compiler's spec to say which switches take arguments. But
431 this cannot be done in a consistent fashion. CC cannot even decide
432 which input files have been specified without knowing which switches
433 take arguments, and it must know which input files to compile in order
434 to tell which compilers to run.
436 CC also knows implicitly that arguments starting in `-l' are to be
437 treated as compiler output files, and passed to the linker in their
438 proper position among the other output files. */
440 /* Define the macros used for specs %a, %l, %L, %S, %c, %C, %1. */
442 /* config.h can define ASM_SPEC to provide extra args to the assembler
443 or extra switch-translations. */
448 /* config.h can define ASM_FINAL_SPEC to run a post processor after
449 the assembler has run. */
450 #ifndef ASM_FINAL_SPEC
451 #define ASM_FINAL_SPEC ""
454 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
455 or extra switch-translations. */
460 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
461 or extra switch-translations. */
466 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
467 or extra switch-translations. */
469 #define CC1PLUS_SPEC ""
472 /* config.h can define LINK_SPEC to provide extra args to the linker
473 or extra switch-translations. */
478 /* config.h can define LIB_SPEC to override the default libraries. */
480 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
483 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
486 #if defined(LINK_LIBGCC_SPECIAL) || defined(LINK_LIBGCC_SPECIAL_1)
487 /* Have gcc do the search for libgcc.a. */
488 #define LIBGCC_SPEC "libgcc.a%s"
490 #define LIBGCC_SPEC "-lgcc"
494 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
495 #ifndef STARTFILE_SPEC
496 #define STARTFILE_SPEC \
497 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
500 /* config.h can define SWITCHES_NEED_SPACES to control which options
501 require spaces between the option and the argument. */
502 #ifndef SWITCHES_NEED_SPACES
503 #define SWITCHES_NEED_SPACES ""
506 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
508 #define ENDFILE_SPEC ""
511 /* This spec is used for telling cpp whether char is signed or not. */
512 #ifndef SIGNED_CHAR_SPEC
513 /* Use #if rather than ?:
514 because MIPS C compiler rejects like ?: in initializers. */
515 #if DEFAULT_SIGNED_CHAR
516 #define SIGNED_CHAR_SPEC "%{funsigned-char:-D__CHAR_UNSIGNED__}"
518 #define SIGNED_CHAR_SPEC "%{!fsigned-char:-D__CHAR_UNSIGNED__}"
523 #define LINKER_NAME "collect2"
526 /* Here is the spec for running the linker, after compiling all files. */
528 /* -u* was put back because both BSD and SysV seem to support it. */
529 /* %{static:} simply prevents an error message if the target machine
530 doesn't handle -static. */
531 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
532 scripts which exist in user specified directories, or in standard
534 #ifndef LINK_COMMAND_SPEC
535 #define LINK_COMMAND_SPEC "\
536 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
537 %(linker) %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r} %{s} %{t}\
538 %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
539 %{static:} %{L*} %(link_libgcc) %o %{!nostdlib:%{!nodefaultlibs:%G %L %G}}\
540 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
543 #ifndef LINK_LIBGCC_SPEC
544 # ifdef LINK_LIBGCC_SPECIAL
545 /* Don't generate -L options for startfile prefix list. */
546 # define LINK_LIBGCC_SPEC ""
548 /* Do generate them. */
549 # define LINK_LIBGCC_SPEC "%D"
553 static const char *cpp_spec = CPP_SPEC;
554 static const char *cpp_predefines = CPP_PREDEFINES;
555 static const char *cc1_spec = CC1_SPEC;
556 static const char *cc1plus_spec = CC1PLUS_SPEC;
557 static const char *signed_char_spec = SIGNED_CHAR_SPEC;
558 static const char *asm_spec = ASM_SPEC;
559 static const char *asm_final_spec = ASM_FINAL_SPEC;
560 static const char *link_spec = LINK_SPEC;
561 static const char *lib_spec = LIB_SPEC;
562 static const char *libgcc_spec = LIBGCC_SPEC;
563 static const char *endfile_spec = ENDFILE_SPEC;
564 static const char *startfile_spec = STARTFILE_SPEC;
565 static const char *switches_need_spaces = SWITCHES_NEED_SPACES;
566 static const char *linker_name_spec = LINKER_NAME;
567 static const char *link_command_spec = LINK_COMMAND_SPEC;
568 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
570 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
571 There should be no need to override these in target dependent files,
572 but we need to copy them to the specs file so that newer versions
573 of the GCC driver can correctly drive older tool chains with the
574 appropriate -B options. */
576 static const char *trad_capable_cpp =
577 "%{traditional|ftraditional|traditional-cpp:trad}cpp0";
579 static const char *cpp_options =
580 "%{C:%{!E:%eGNU C does not support -C without using -E}}\
581 %{std*} %{nostdinc*}\
582 %{C} %{v} %{A*} %{I*} %{P} %{$} %I\
583 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d} %{MG}\
584 %{!no-gcc:-D__GNUC__=%v1 -D__GNUC_MINOR__=%v2 -D__GNUC_PATCHLEVEL__=%v3}\
585 %{!undef:%{!ansi:%{!std=*:%p}%{std=gnu*:%p}} %P} %{trigraphs}\
586 %c %{Os:-D__OPTIMIZE_SIZE__} %{O*:%{!O0:-D__OPTIMIZE__}}\
587 %{ffast-math:-D__FAST_MATH__}\
588 %{fshort-wchar:-U__WCHAR_TYPE__ -D__WCHAR_TYPE__=short\\ unsigned\\ int}\
589 %{ffreestanding:-D__STDC_HOSTED__=0} %{fno-hosted:-D__STDC_HOSTED__=0}\
590 %{!ffreestanding:%{!fno-hosted:-D__STDC_HOSTED__=1}}\
591 %{fshow-column} %{fno-show-column}\
592 %{fleading-underscore} %{fno-leading-underscore}\
594 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C %{U*} %{D*} %{i*} %Z %i\
595 %{E:%W{o*}}%{M:%W{o*}}%{MM:%W{o*}}";
597 /* NB: This is shared amongst all front-ends. */
598 static const char *cc1_options =
599 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
600 %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\
601 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{std*} %{ansi}\
602 %{traditional} %{v:-version} %{pg:-p} %{p} %{f*}\
603 %{aux-info*} %{Qn:-fno-ident} %{--help:--help}\
604 %{--target-help:--target-help}\
605 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
606 %{fsyntax-only:-o %j}";
608 static const char *asm_options =
609 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
611 static const char *invoke_as =
612 "%{!S:-o %{|!pipe:%g.s} |\n as %(asm_options) %{!pipe:%g.s} %A }";
614 /* Some compilers have limits on line lengths, and the multilib_select
615 and/or multilib_matches strings can be very long, so we build them at
617 static struct obstack multilib_obstack;
618 static const char *multilib_select;
619 static const char *multilib_matches;
620 static const char *multilib_defaults;
621 static const char *multilib_exclusions;
622 #include "multilib.h"
624 /* Check whether a particular argument is a default argument. */
626 #ifndef MULTILIB_DEFAULTS
627 #define MULTILIB_DEFAULTS { "" }
630 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
634 struct user_specs *next;
635 const char *filename;
638 static struct user_specs *user_specs_head, *user_specs_tail;
640 /* This defines which switch letters take arguments. */
642 #define DEFAULT_SWITCH_TAKES_ARG(CHAR) \
643 ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o' \
644 || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u' \
645 || (CHAR) == 'I' || (CHAR) == 'm' || (CHAR) == 'x' \
646 || (CHAR) == 'L' || (CHAR) == 'A' || (CHAR) == 'V' \
647 || (CHAR) == 'B' || (CHAR) == 'b')
649 #ifndef SWITCH_TAKES_ARG
650 #define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR)
653 /* This defines which multi-letter switches take arguments. */
655 #define DEFAULT_WORD_SWITCH_TAKES_ARG(STR) \
656 (!strcmp (STR, "Tdata") || !strcmp (STR, "Ttext") \
657 || !strcmp (STR, "Tbss") || !strcmp (STR, "include") \
658 || !strcmp (STR, "imacros") || !strcmp (STR, "aux-info") \
659 || !strcmp (STR, "idirafter") || !strcmp (STR, "iprefix") \
660 || !strcmp (STR, "iwithprefix") || !strcmp (STR, "iwithprefixbefore") \
661 || !strcmp (STR, "isystem") || !strcmp (STR, "specs") \
662 || !strcmp (STR, "MF") || !strcmp (STR, "MT"))
664 #ifndef WORD_SWITCH_TAKES_ARG
665 #define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
668 #ifdef HAVE_EXECUTABLE_SUFFIX
669 /* This defines which switches stop a full compilation. */
670 #define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \
671 ((CHAR) == 'c' || (CHAR) == 'S')
673 #ifndef SWITCH_CURTAILS_COMPILATION
674 #define SWITCH_CURTAILS_COMPILATION(CHAR) \
675 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR)
679 /* Record the mapping from file suffixes for compilation specs. */
683 const char *suffix; /* Use this compiler for input files
684 whose names end in this suffix. */
686 const char *spec; /* To use this compiler, run this spec. */
689 /* Pointer to a vector of `struct compiler' that gives the spec for
690 compiling a file, based on its suffix.
691 A file that does not end in any of these suffixes will be passed
692 unchanged to the loader and nothing else will be done to it.
694 An entry containing two 0s is used to terminate the vector.
696 If multiple entries match a file, the last matching one is used. */
698 static struct compiler *compilers;
700 /* Number of entries in `compilers', not counting the null terminator. */
702 static int n_compilers;
704 /* The default list of file name suffixes and their compilation specs. */
706 static struct compiler default_compilers[] =
708 /* Add lists of suffixes of known languages here. If those languages
709 were not present when we built the driver, we will hit these copies
710 and be given a more meaningful error than "file not used since
711 linking is not done". */
712 {".m", "#Objective-C"}, {".mi", "#Objective-C"},
713 {".cc", "#C++"}, {".cxx", "#C++"}, {".cpp", "#C++"}, {".cp", "#C++"},
714 {".c++", "#C++"}, {".C", "#C++"}, {".ii", "#C++"},
715 {".ads", "#Ada"}, {".adb", "#Ada"}, {".ada", "#Ada"},
716 {".f", "#Fortran"}, {".for", "#Fortran"}, {".fpp", "#Fortran"},
717 {".F", "#Fortran"}, {".FOR", "#Fortran"}, {".FPP", "#Fortran"},
719 {".p", "#Pascal"}, {".pas", "#Pascal"},
720 {".ch", "#Chill"}, {".chi", "#Chill"},
721 {".java", "#Java"}, {".class", "#Java"},
722 {".zip", "#Java"}, {".jar", "#Java"},
723 /* Next come the entries for C. */
726 /* cc1 has an integrated ISO C preprocessor. We should invoke the
727 external preprocessor if -save-temps or -traditional is given. */
728 "%{E|M|MM:%(trad_capable_cpp) -lang-c %{ansi:-std=c89} %(cpp_options)}\
730 %{save-temps:%(trad_capable_cpp) -lang-c %{ansi:-std=c89}\
731 %(cpp_options) %b.i \n\
732 cc1 -fpreprocessed %b.i %(cc1_options)}\
734 %{traditional|ftraditional|traditional-cpp:\
735 tradcpp0 -lang-c %{ansi:-std=c89} %(cpp_options) %{!pipe:%g.i} |\n\
736 cc1 -fpreprocessed %{!pipe:%g.i} %(cc1_options)}\
737 %{!traditional:%{!ftraditional:%{!traditional-cpp:\
738 cc1 -lang-c %{ansi:-std=c89} %(cpp_options) %(cc1_options)}}}}\
739 %{!fsyntax-only:%(invoke_as)}}}}"},
741 "%{!E:%e-E required when input is from standard input}\
742 %(trad_capable_cpp) -lang-c %{ansi:-std=c89} %(cpp_options)"},
745 "%{!E:%eCompilation of header file requested} \
746 %(trad_capable_cpp) -lang-c %{ansi:-std=c89} %(cpp_options)"},
747 {".i", "@cpp-output"},
749 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}"},
750 {".s", "@assembler"},
752 "%{!M:%{!MM:%{!E:%{!S:as %(asm_options) %i %A }}}}"},
753 {".S", "@assembler-with-cpp"},
754 {"@assembler-with-cpp",
755 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
756 %{!M:%{!MM:%{!E:%(invoke_as)}}}"},
758 /* Mark end of table */
762 /* Number of elements in default_compilers, not counting the terminator. */
764 static int n_default_compilers
765 = (sizeof default_compilers / sizeof (struct compiler)) - 1;
767 /* A vector of options to give to the linker.
768 These options are accumulated by %x,
769 and substituted into the linker command with %X. */
770 static int n_linker_options;
771 static char **linker_options;
773 /* A vector of options to give to the assembler.
774 These options are accumulated by -Wa,
775 and substituted into the assembler command with %Y. */
776 static int n_assembler_options;
777 static char **assembler_options;
779 /* A vector of options to give to the preprocessor.
780 These options are accumulated by -Wp,
781 and substituted into the preprocessor command with %Z. */
782 static int n_preprocessor_options;
783 static char **preprocessor_options;
785 /* Define how to map long options into short ones. */
787 /* This structure describes one mapping. */
790 /* The long option's name. */
792 /* The equivalent short option. */
793 const char *equivalent;
794 /* Argument info. A string of flag chars; NULL equals no options.
795 a => argument required.
796 o => argument optional.
797 j => join argument to equivalent, making one word.
798 * => require other text after NAME as an argument. */
799 const char *arg_info;
802 /* This is the table of mappings. Mappings are tried sequentially
803 for each option encountered; the first one that matches, wins. */
805 struct option_map option_map[] =
807 {"--all-warnings", "-Wall", 0},
808 {"--ansi", "-ansi", 0},
809 {"--assemble", "-S", 0},
810 {"--assert", "-A", "a"},
811 {"--classpath", "-fclasspath=", "aj"},
812 {"--CLASSPATH", "-fCLASSPATH=", "aj"},
813 {"--comments", "-C", 0},
814 {"--compile", "-c", 0},
815 {"--debug", "-g", "oj"},
816 {"--define-macro", "-D", "aj"},
817 {"--dependencies", "-M", 0},
818 {"--dump", "-d", "a"},
819 {"--dumpbase", "-dumpbase", "a"},
820 {"--entry", "-e", 0},
821 {"--extra-warnings", "-W", 0},
822 {"--for-assembler", "-Wa", "a"},
823 {"--for-linker", "-Xlinker", "a"},
824 {"--force-link", "-u", "a"},
825 {"--imacros", "-imacros", "a"},
826 {"--include", "-include", "a"},
827 {"--include-barrier", "-I-", 0},
828 {"--include-directory", "-I", "aj"},
829 {"--include-directory-after", "-idirafter", "a"},
830 {"--include-prefix", "-iprefix", "a"},
831 {"--include-with-prefix", "-iwithprefix", "a"},
832 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
833 {"--include-with-prefix-after", "-iwithprefix", "a"},
834 {"--language", "-x", "a"},
835 {"--library-directory", "-L", "a"},
836 {"--machine", "-m", "aj"},
837 {"--machine-", "-m", "*j"},
838 {"--no-line-commands", "-P", 0},
839 {"--no-precompiled-includes", "-noprecomp", 0},
840 {"--no-standard-includes", "-nostdinc", 0},
841 {"--no-standard-libraries", "-nostdlib", 0},
842 {"--no-warnings", "-w", 0},
843 {"--optimize", "-O", "oj"},
844 {"--output", "-o", "a"},
845 {"--output-class-directory", "-foutput-class-dir=", "ja"},
846 {"--pedantic", "-pedantic", 0},
847 {"--pedantic-errors", "-pedantic-errors", 0},
848 {"--pipe", "-pipe", 0},
849 {"--prefix", "-B", "a"},
850 {"--preprocess", "-E", 0},
851 {"--print-search-dirs", "-print-search-dirs", 0},
852 {"--print-file-name", "-print-file-name=", "aj"},
853 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
854 {"--print-missing-file-dependencies", "-MG", 0},
855 {"--print-multi-lib", "-print-multi-lib", 0},
856 {"--print-multi-directory", "-print-multi-directory", 0},
857 {"--print-prog-name", "-print-prog-name=", "aj"},
858 {"--profile", "-p", 0},
859 {"--profile-blocks", "-a", 0},
860 {"--quiet", "-q", 0},
861 {"--save-temps", "-save-temps", 0},
862 {"--shared", "-shared", 0},
863 {"--silent", "-q", 0},
864 {"--specs", "-specs=", "aj"},
865 {"--static", "-static", 0},
866 {"--std", "-std=", "aj"},
867 {"--symbolic", "-symbolic", 0},
868 {"--target", "-b", "a"},
869 {"--time", "-time", 0},
870 {"--trace-includes", "-H", 0},
871 {"--traditional", "-traditional", 0},
872 {"--traditional-cpp", "-traditional-cpp", 0},
873 {"--trigraphs", "-trigraphs", 0},
874 {"--undefine-macro", "-U", "aj"},
875 {"--use-version", "-V", "a"},
876 {"--user-dependencies", "-MM", 0},
877 {"--verbose", "-v", 0},
878 {"--version", "-dumpversion", 0},
879 {"--warn-", "-W", "*j"},
880 {"--write-dependencies", "-MD", 0},
881 {"--write-user-dependencies", "-MMD", 0},
885 /* Translate the options described by *ARGCP and *ARGVP.
886 Make a new vector and store it back in *ARGVP,
887 and store its length in *ARGVC. */
890 translate_options (argcp, argvp)
892 const char *const **argvp;
896 const char *const *argv = *argvp;
898 (const char **) xmalloc ((argc + 2) * 2 * sizeof (const char *));
902 newv[newindex++] = argv[i++];
906 /* Translate -- options. */
907 if (argv[i][0] == '-' && argv[i][1] == '-')
910 /* Find a mapping that applies to this option. */
911 for (j = 0; j < ARRAY_SIZE (option_map); j++)
913 size_t optlen = strlen (option_map[j].name);
914 size_t arglen = strlen (argv[i]);
915 size_t complen = arglen > optlen ? optlen : arglen;
916 const char *arginfo = option_map[j].arg_info;
921 if (!strncmp (argv[i], option_map[j].name, complen))
928 for (k = j + 1; k < ARRAY_SIZE (option_map); k++)
929 if (strlen (option_map[k].name) >= arglen
930 && !strncmp (argv[i], option_map[k].name, arglen))
932 error ("Ambiguous abbreviation %s", argv[i]);
936 if (k != ARRAY_SIZE (option_map))
942 /* If the option has an argument, accept that. */
943 if (argv[i][optlen] == '=')
944 arg = argv[i] + optlen + 1;
946 /* If this mapping requires extra text at end of name,
947 accept that as "argument". */
948 else if (strchr (arginfo, '*') != 0)
949 arg = argv[i] + optlen;
951 /* Otherwise, extra text at end means mismatch.
952 Try other mappings. */
957 else if (strchr (arginfo, '*') != 0)
959 error ("Incomplete `%s' option", option_map[j].name);
963 /* Handle arguments. */
964 if (strchr (arginfo, 'a') != 0)
970 error ("Missing argument to `%s' option",
978 else if (strchr (arginfo, '*') != 0)
980 else if (strchr (arginfo, 'o') == 0)
983 error ("Extraneous argument to `%s' option",
988 /* Store the translation as one argv elt or as two. */
989 if (arg != 0 && strchr (arginfo, 'j') != 0)
990 newv[newindex++] = concat (option_map[j].equivalent, arg,
994 newv[newindex++] = option_map[j].equivalent;
995 newv[newindex++] = arg;
998 newv[newindex++] = option_map[j].equivalent;
1006 /* Handle old-fashioned options--just copy them through,
1007 with their arguments. */
1008 else if (argv[i][0] == '-')
1010 const char *p = argv[i] + 1;
1014 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
1015 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
1016 else if (WORD_SWITCH_TAKES_ARG (p))
1017 nskip += WORD_SWITCH_TAKES_ARG (p);
1018 else if ((c == 'B' || c == 'b' || c == 'V' || c == 'x')
1021 else if (! strcmp (p, "Xlinker"))
1024 /* Watch out for an option at the end of the command line that
1025 is missing arguments, and avoid skipping past the end of the
1027 if (nskip + i > argc)
1032 newv[newindex++] = argv[i++];
1037 /* Ordinary operands, or +e options. */
1038 newv[newindex++] = argv[i++];
1053 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1054 be considered whitespace. */
1055 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1057 else if (*p == '\n' || *p == ' ' || *p == '\t')
1071 /* Structures to keep track of prefixes to try when looking for files. */
1075 char *prefix; /* String to prepend to the path. */
1076 struct prefix_list *next; /* Next in linked list. */
1077 int require_machine_suffix; /* Don't use without machine_suffix. */
1078 /* 2 means try both machine_suffix and just_machine_suffix. */
1079 int *used_flag_ptr; /* 1 if a file was found with this prefix. */
1080 int priority; /* Sort key - priority within list */
1085 struct prefix_list *plist; /* List of prefixes to try */
1086 int max_len; /* Max length of a prefix in PLIST */
1087 const char *name; /* Name of this list (used in config stuff) */
1090 /* List of prefixes to try when looking for executables. */
1092 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1094 /* List of prefixes to try when looking for startup (crt0) files. */
1096 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1098 /* List of prefixes to try when looking for include files. */
1100 static struct path_prefix include_prefixes = { 0, 0, "include" };
1102 /* Suffix to attach to directories searched for commands.
1103 This looks like `MACHINE/VERSION/'. */
1105 static const char *machine_suffix = 0;
1107 /* Suffix to attach to directories searched for commands.
1108 This is just `MACHINE/'. */
1110 static const char *just_machine_suffix = 0;
1112 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1114 static const char *gcc_exec_prefix;
1116 /* Default prefixes to attach to command names. */
1118 #ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */
1119 #undef MD_EXEC_PREFIX
1120 #undef MD_STARTFILE_PREFIX
1121 #undef MD_STARTFILE_PREFIX_1
1124 /* If no prefixes defined, use the null string, which will disable them. */
1125 #ifndef MD_EXEC_PREFIX
1126 #define MD_EXEC_PREFIX ""
1128 #ifndef MD_STARTFILE_PREFIX
1129 #define MD_STARTFILE_PREFIX ""
1131 #ifndef MD_STARTFILE_PREFIX_1
1132 #define MD_STARTFILE_PREFIX_1 ""
1135 /* Supply defaults for the standard prefixes. */
1137 #ifndef STANDARD_EXEC_PREFIX
1138 #define STANDARD_EXEC_PREFIX "/usr/local/lib/gcc-lib/"
1140 #ifndef STANDARD_STARTFILE_PREFIX
1141 #define STANDARD_STARTFILE_PREFIX "/usr/local/lib/"
1143 #ifndef TOOLDIR_BASE_PREFIX
1144 #define TOOLDIR_BASE_PREFIX "/usr/local/"
1146 #ifndef STANDARD_BINDIR_PREFIX
1147 #define STANDARD_BINDIR_PREFIX "/usr/local/bin"
1150 static const char *standard_exec_prefix = STANDARD_EXEC_PREFIX;
1151 static const char *standard_exec_prefix_1 = "/usr/lib/gcc/";
1152 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1154 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1155 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1156 static const char *standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1157 static const char *standard_startfile_prefix_1 = "/lib/";
1158 static const char *standard_startfile_prefix_2 = "/usr/lib/";
1160 static const char *tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1161 static const char *tooldir_prefix;
1163 static const char *standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1165 /* Subdirectory to use for locating libraries. Set by
1166 set_multilib_dir based on the compilation options. */
1168 static const char *multilib_dir;
1170 /* Structure to keep track of the specs that have been defined so far.
1171 These are accessed using %(specname) or %[specname] in a compiler
1176 /* The following 2 fields must be first */
1177 /* to allow EXTRA_SPECS to be initialized */
1178 const char *name; /* name of the spec. */
1179 const char *ptr; /* available ptr if no static pointer */
1181 /* The following fields are not initialized */
1182 /* by EXTRA_SPECS */
1183 const char **ptr_spec; /* pointer to the spec itself. */
1184 struct spec_list *next; /* Next spec in linked list. */
1185 int name_len; /* length of the name */
1186 int alloc_p; /* whether string was allocated */
1189 #define INIT_STATIC_SPEC(NAME,PTR) \
1190 { NAME, NULL_PTR, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1192 /* List of statically defined specs. */
1193 static struct spec_list static_specs[] =
1195 INIT_STATIC_SPEC ("asm", &asm_spec),
1196 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1197 INIT_STATIC_SPEC ("asm_options", &asm_options),
1198 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1199 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1200 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1201 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1202 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1203 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1204 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1205 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1206 INIT_STATIC_SPEC ("link", &link_spec),
1207 INIT_STATIC_SPEC ("lib", &lib_spec),
1208 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1209 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1210 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces),
1211 INIT_STATIC_SPEC ("signed_char", &signed_char_spec),
1212 INIT_STATIC_SPEC ("predefines", &cpp_predefines),
1213 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1214 INIT_STATIC_SPEC ("version", &compiler_version),
1215 INIT_STATIC_SPEC ("multilib", &multilib_select),
1216 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1217 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1218 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1219 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1220 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1221 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1222 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1223 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1224 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1227 #ifdef EXTRA_SPECS /* additional specs needed */
1228 /* Structure to keep track of just the first two args of a spec_list.
1229 That is all that the EXTRA_SPECS macro gives us. */
1236 static struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1237 static struct spec_list *extra_specs = (struct spec_list *) 0;
1240 /* List of dynamically allocates specs that have been defined so far. */
1242 static struct spec_list *specs = (struct spec_list *) 0;
1244 /* Initialize the specs lookup routines. */
1249 struct spec_list *next = (struct spec_list *) 0;
1250 struct spec_list *sl = (struct spec_list *) 0;
1254 return; /* Already initialized. */
1257 notice ("Using builtin specs.\n");
1260 extra_specs = (struct spec_list *)
1261 xcalloc (sizeof (struct spec_list), ARRAY_SIZE (extra_specs_1));
1263 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1265 sl = &extra_specs[i];
1266 sl->name = extra_specs_1[i].name;
1267 sl->ptr = extra_specs_1[i].ptr;
1269 sl->name_len = strlen (sl->name);
1270 sl->ptr_spec = &sl->ptr;
1275 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1277 sl = &static_specs[i];
1285 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1286 removed; If the spec starts with a + then SPEC is added to the end of the
1290 set_spec (name, spec)
1294 struct spec_list *sl;
1295 const char *old_spec;
1296 int name_len = strlen (name);
1299 /* If this is the first call, initialize the statically allocated specs. */
1302 struct spec_list *next = (struct spec_list *) 0;
1303 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1305 sl = &static_specs[i];
1312 /* See if the spec already exists. */
1313 for (sl = specs; sl; sl = sl->next)
1314 if (name_len == sl->name_len && !strcmp (sl->name, name))
1319 /* Not found - make it. */
1320 sl = (struct spec_list *) xmalloc (sizeof (struct spec_list));
1321 sl->name = xstrdup (name);
1322 sl->name_len = name_len;
1323 sl->ptr_spec = &sl->ptr;
1325 *(sl->ptr_spec) = "";
1330 old_spec = *(sl->ptr_spec);
1331 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1332 ? concat (old_spec, spec + 1, NULL_PTR)
1337 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1340 /* Free the old spec. */
1341 if (old_spec && sl->alloc_p)
1342 free ((PTR) old_spec);
1347 /* Accumulate a command (program name and args), and run it. */
1349 /* Vector of pointers to arguments in the current line of specifications. */
1351 static const char **argbuf;
1353 /* Number of elements allocated in argbuf. */
1355 static int argbuf_length;
1357 /* Number of elements in argbuf currently in use (containing args). */
1359 static int argbuf_index;
1361 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1362 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1365 static struct temp_name {
1366 const char *suffix; /* suffix associated with the code. */
1367 int length; /* strlen (suffix). */
1368 int unique; /* Indicates whether %g or %u/%U was used. */
1369 const char *filename; /* associated filename. */
1370 int filename_length; /* strlen (filename). */
1371 struct temp_name *next;
1374 /* Number of commands executed so far. */
1376 static int execution_count;
1378 /* Number of commands that exited with a signal. */
1380 static int signal_count;
1382 /* Name with which this program was invoked. */
1384 static const char *programname;
1386 /* Clear out the vector of arguments (after a command is executed). */
1394 /* Add one argument to the vector at the end.
1395 This is done when a space is seen or at the end of the line.
1396 If DELETE_ALWAYS is nonzero, the arg is a filename
1397 and the file should be deleted eventually.
1398 If DELETE_FAILURE is nonzero, the arg is a filename
1399 and the file should be deleted if this compilation fails. */
1402 store_arg (arg, delete_always, delete_failure)
1404 int delete_always, delete_failure;
1406 if (argbuf_index + 1 == argbuf_length)
1408 = (const char **) xrealloc (argbuf,
1409 (argbuf_length *= 2) * sizeof (const char *));
1411 argbuf[argbuf_index++] = arg;
1412 argbuf[argbuf_index] = 0;
1414 if (delete_always || delete_failure)
1415 record_temp_file (arg, delete_always, delete_failure);
1418 /* Load specs from a file name named FILENAME, replacing occurances of
1419 various different types of line-endings, \r\n, \n\r and just \r, with
1423 load_specs (filename)
1424 const char *filename;
1428 struct stat statbuf;
1435 notice ("Reading specs from %s\n", filename);
1437 /* Open and stat the file. */
1438 desc = open (filename, O_RDONLY, 0);
1440 pfatal_with_name (filename);
1441 if (stat (filename, &statbuf) < 0)
1442 pfatal_with_name (filename);
1444 /* Read contents of file into BUFFER. */
1445 buffer = xmalloc ((unsigned) statbuf.st_size + 1);
1446 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1448 pfatal_with_name (filename);
1449 buffer[readlen] = 0;
1452 specs = xmalloc (readlen + 1);
1454 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1460 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1462 else if (*(buffer_p + 1) == '\n') /* \r\n */
1476 /* Read compilation specs from a file named FILENAME,
1477 replacing the default ones.
1479 A suffix which starts with `*' is a definition for
1480 one of the machine-specific sub-specs. The "suffix" should be
1481 *asm, *cc1, *cpp, *link, *startfile, *signed_char, etc.
1482 The corresponding spec is stored in asm_spec, etc.,
1483 rather than in the `compilers' vector.
1485 Anything invalid in the file is a fatal error. */
1488 read_specs (filename, main_p)
1489 const char *filename;
1495 buffer = load_specs (filename);
1497 /* Scan BUFFER for specs, putting them in the vector. */
1503 char *in, *out, *p1, *p2, *p3;
1505 /* Advance P in BUFFER to the next nonblank nocomment line. */
1506 p = skip_whitespace (p);
1510 /* Is this a special command that starts with '%'? */
1511 /* Don't allow this for the main specs file, since it would
1512 encourage people to overwrite it. */
1513 if (*p == '%' && !main_p)
1516 while (*p && *p != '\n')
1522 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1523 && (p1[sizeof "%include" - 1] == ' '
1524 || p1[sizeof "%include" - 1] == '\t'))
1528 p1 += sizeof ("%include");
1529 while (*p1 == ' ' || *p1 == '\t')
1532 if (*p1++ != '<' || p[-2] != '>')
1533 fatal ("specs %%include syntax malformed after %ld characters",
1534 (long) (p1 - buffer + 1));
1537 new_filename = find_a_file (&startfile_prefixes, p1, R_OK);
1538 read_specs (new_filename ? new_filename : p1, FALSE);
1541 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1542 && (p1[sizeof "%include_noerr" - 1] == ' '
1543 || p1[sizeof "%include_noerr" - 1] == '\t'))
1547 p1 += sizeof "%include_noerr";
1548 while (*p1 == ' ' || *p1 == '\t')
1551 if (*p1++ != '<' || p[-2] != '>')
1552 fatal ("specs %%include syntax malformed after %ld characters",
1553 (long) (p1 - buffer + 1));
1556 new_filename = find_a_file (&startfile_prefixes, p1, R_OK);
1558 read_specs (new_filename, FALSE);
1559 else if (verbose_flag)
1560 notice ("Could not find specs file %s\n", p1);
1563 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1564 && (p1[sizeof "%rename" - 1] == ' '
1565 || p1[sizeof "%rename" - 1] == '\t'))
1568 struct spec_list *sl;
1570 /* Get original name */
1571 p1 += sizeof "%rename";
1572 while (*p1 == ' ' || *p1 == '\t')
1575 if (! ISALPHA ((unsigned char) *p1))
1576 fatal ("specs %%rename syntax malformed after %ld characters",
1577 (long) (p1 - buffer));
1580 while (*p2 && !ISSPACE ((unsigned char) *p2))
1583 if (*p2 != ' ' && *p2 != '\t')
1584 fatal ("specs %%rename syntax malformed after %ld characters",
1585 (long) (p2 - buffer));
1589 while (*p2 == ' ' || *p2 == '\t')
1592 if (! ISALPHA ((unsigned char) *p2))
1593 fatal ("specs %%rename syntax malformed after %ld characters",
1594 (long) (p2 - buffer));
1596 /* Get new spec name. */
1598 while (*p3 && !ISSPACE ((unsigned char) *p3))
1602 fatal ("specs %%rename syntax malformed after %ld characters",
1603 (long) (p3 - buffer));
1606 for (sl = specs; sl; sl = sl->next)
1607 if (name_len == sl->name_len && !strcmp (sl->name, p1))
1611 fatal ("specs %s spec was not found to be renamed", p1);
1613 if (strcmp (p1, p2) == 0)
1618 notice ("rename spec %s to %s\n", p1, p2);
1620 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
1624 set_spec (p2, *(sl->ptr_spec));
1626 free ((PTR) *(sl->ptr_spec));
1628 *(sl->ptr_spec) = "";
1633 fatal ("specs unknown %% command after %ld characters",
1634 (long) (p1 - buffer));
1637 /* Find the colon that should end the suffix. */
1639 while (*p1 && *p1 != ':' && *p1 != '\n')
1642 /* The colon shouldn't be missing. */
1644 fatal ("specs file malformed after %ld characters",
1645 (long) (p1 - buffer));
1647 /* Skip back over trailing whitespace. */
1649 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
1652 /* Copy the suffix to a string. */
1653 suffix = save_string (p, p2 - p);
1654 /* Find the next line. */
1655 p = skip_whitespace (p1 + 1);
1657 fatal ("specs file malformed after %ld characters",
1658 (long) (p - buffer));
1661 /* Find next blank line or end of string. */
1662 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
1665 /* Specs end at the blank line and do not include the newline. */
1666 spec = save_string (p, p1 - p);
1669 /* Delete backslash-newline sequences from the spec. */
1674 if (in[0] == '\\' && in[1] == '\n')
1676 else if (in[0] == '#')
1677 while (*in && *in != '\n')
1685 if (suffix[0] == '*')
1687 if (! strcmp (suffix, "*link_command"))
1688 link_command_spec = spec;
1690 set_spec (suffix + 1, spec);
1694 /* Add this pair to the vector. */
1696 = ((struct compiler *)
1697 xrealloc (compilers,
1698 (n_compilers + 2) * sizeof (struct compiler)));
1700 compilers[n_compilers].suffix = suffix;
1701 compilers[n_compilers].spec = spec;
1703 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
1707 link_command_spec = spec;
1710 if (link_command_spec == 0)
1711 fatal ("spec file has no spec for linking");
1714 /* Record the names of temporary files we tell compilers to write,
1715 and delete them at the end of the run. */
1717 /* This is the common prefix we use to make temp file names.
1718 It is chosen once for each run of this program.
1719 It is substituted into a spec by %g or %j.
1720 Thus, all temp file names contain this prefix.
1721 In practice, all temp file names start with this prefix.
1723 This prefix comes from the envvar TMPDIR if it is defined;
1724 otherwise, from the P_tmpdir macro if that is defined;
1725 otherwise, in /usr/tmp or /tmp;
1726 or finally the current directory if all else fails. */
1728 static const char *temp_filename;
1730 /* Length of the prefix. */
1732 static int temp_filename_length;
1734 /* Define the list of temporary files to delete. */
1739 struct temp_file *next;
1742 /* Queue of files to delete on success or failure of compilation. */
1743 static struct temp_file *always_delete_queue;
1744 /* Queue of files to delete on failure of compilation. */
1745 static struct temp_file *failure_delete_queue;
1747 /* Record FILENAME as a file to be deleted automatically.
1748 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
1749 otherwise delete it in any case.
1750 FAIL_DELETE nonzero means delete it if a compilation step fails;
1751 otherwise delete it in any case. */
1754 record_temp_file (filename, always_delete, fail_delete)
1755 const char *filename;
1759 register char *const name = xstrdup (filename);
1763 register struct temp_file *temp;
1764 for (temp = always_delete_queue; temp; temp = temp->next)
1765 if (! strcmp (name, temp->name))
1768 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
1769 temp->next = always_delete_queue;
1771 always_delete_queue = temp;
1778 register struct temp_file *temp;
1779 for (temp = failure_delete_queue; temp; temp = temp->next)
1780 if (! strcmp (name, temp->name))
1783 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
1784 temp->next = failure_delete_queue;
1786 failure_delete_queue = temp;
1792 /* Delete all the temporary files whose names we previously recorded. */
1795 delete_if_ordinary (name)
1802 printf ("Delete %s? (y or n) ", name);
1806 while ((c = getchar ()) != '\n' && c != EOF)
1809 if (i == 'y' || i == 'Y')
1811 if (stat (name, &st) >= 0 && S_ISREG (st.st_mode))
1812 if (unlink (name) < 0)
1814 perror_with_name (name);
1818 delete_temp_files ()
1820 register struct temp_file *temp;
1822 for (temp = always_delete_queue; temp; temp = temp->next)
1823 delete_if_ordinary (temp->name);
1824 always_delete_queue = 0;
1827 /* Delete all the files to be deleted on error. */
1830 delete_failure_queue ()
1832 register struct temp_file *temp;
1834 for (temp = failure_delete_queue; temp; temp = temp->next)
1835 delete_if_ordinary (temp->name);
1839 clear_failure_queue ()
1841 failure_delete_queue = 0;
1844 /* Routine to add variables to the environment. We do this to pass
1845 the pathname of the gcc driver, and the directories search to the
1846 collect2 program, which is being run as ld. This way, we can be
1847 sure of executing the right compiler when collect2 wants to build
1848 constructors and destructors. Since the environment variables we
1849 use come from an obstack, we don't have to worry about allocating
1858 #ifndef VMS /* nor about VMS */
1860 extern char **environ;
1861 char **old_environ = environ;
1865 int str_len = strlen (str);
1869 while ((ch = *p++) != '\0' && ch != '=')
1875 /* Search for replacing an existing environment variable, and
1876 count the number of total environment variables. */
1877 for (envp = old_environ; *envp; envp++)
1880 if (!strncmp (str, *envp, name_len))
1887 /* Add a new environment variable */
1888 environ = (char **) xmalloc (sizeof (char *) * (num_envs + 2));
1890 memcpy ((char *) (environ + 1), (char *) old_environ,
1891 sizeof (char *) * (num_envs + 1));
1896 #endif /* HAVE_PUTENV */
1898 /* Build a list of search directories from PATHS.
1899 PREFIX is a string to prepend to the list.
1900 If CHECK_DIR_P is non-zero we ensure the directory exists.
1901 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
1902 It is also used by the --print-search-dirs flag. */
1905 build_search_list (paths, prefix, check_dir_p)
1906 struct path_prefix *paths;
1910 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0;
1912 = (just_machine_suffix) ? strlen (just_machine_suffix) : 0;
1913 int first_time = TRUE;
1914 struct prefix_list *pprefix;
1916 obstack_grow (&collect_obstack, prefix, strlen (prefix));
1917 obstack_1grow (&collect_obstack, '=');
1919 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next)
1921 int len = strlen (pprefix->prefix);
1925 || is_directory (pprefix->prefix, machine_suffix, 0)))
1928 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
1931 obstack_grow (&collect_obstack, pprefix->prefix, len);
1932 obstack_grow (&collect_obstack, machine_suffix, suffix_len);
1935 if (just_machine_suffix
1936 && pprefix->require_machine_suffix == 2
1938 || is_directory (pprefix->prefix, just_machine_suffix, 0)))
1941 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
1944 obstack_grow (&collect_obstack, pprefix->prefix, len);
1945 obstack_grow (&collect_obstack, just_machine_suffix,
1949 if (! pprefix->require_machine_suffix)
1952 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
1955 obstack_grow (&collect_obstack, pprefix->prefix, len);
1959 obstack_1grow (&collect_obstack, '\0');
1960 return obstack_finish (&collect_obstack);
1963 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
1967 putenv_from_prefixes (paths, env_var)
1968 struct path_prefix *paths;
1969 const char *env_var;
1971 putenv (build_search_list (paths, env_var, 1));
1976 /* FIXME: the location independence code for VMS is hairier than this,
1977 and hasn't been written. */
1979 /* Split a filename into component directories. */
1982 split_directories (name, ptr_num_dirs)
1991 /* Count the number of directories. Special case MSDOS disk names as part
1992 of the initial directory. */
1994 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
1995 if (name[1] == ':' && IS_DIR_SEPARATOR (name[2]))
2000 #endif /* HAVE_DOS_BASED_FILE_SYSTEM */
2002 while ((ch = *p++) != '\0')
2004 if (IS_DIR_SEPARATOR (ch))
2007 while (IS_DIR_SEPARATOR (*p))
2012 dirs = (char **) xmalloc (sizeof (char *) * (num_dirs + 2));
2014 /* Now copy the directory parts. */
2017 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2018 if (name[1] == ':' && IS_DIR_SEPARATOR (name[2]))
2020 dirs[num_dirs++] = save_string (p, 3);
2023 #endif /* HAVE_DOS_BASED_FILE_SYSTEM */
2026 while ((ch = *p++) != '\0')
2028 if (IS_DIR_SEPARATOR (ch))
2030 while (IS_DIR_SEPARATOR (*p))
2033 dirs[num_dirs++] = save_string (q, p - q);
2039 dirs[num_dirs++] = save_string (q, p - 1 - q);
2041 dirs[num_dirs] = NULL_PTR;
2043 *ptr_num_dirs = num_dirs;
2048 /* Release storage held by split directories. */
2051 free_split_directories (dirs)
2056 while (dirs[i] != NULL_PTR)
2059 free ((char *) dirs);
2062 /* Given three strings PROGNAME, BIN_PREFIX, PREFIX, return a string that gets
2063 to PREFIX starting with the directory portion of PROGNAME and a relative
2064 pathname of the difference between BIN_PREFIX and PREFIX.
2066 For example, if BIN_PREFIX is /alpha/beta/gamma/gcc/delta, PREFIX is
2067 /alpha/beta/gamma/omega/, and PROGNAME is /red/green/blue/gcc, then this
2068 function will return /red/green/blue/../omega.
2070 If no relative prefix can be found, return NULL. */
2073 make_relative_prefix (progname, bin_prefix, prefix)
2074 const char *progname;
2075 const char *bin_prefix;
2078 char **prog_dirs, **bin_dirs, **prefix_dirs;
2079 int prog_num, bin_num, prefix_num, std_loc_p;
2082 prog_dirs = split_directories (progname, &prog_num);
2083 bin_dirs = split_directories (bin_prefix, &bin_num);
2085 /* If there is no full pathname, try to find the program by checking in each
2086 of the directories specified in the PATH environment variable. */
2091 GET_ENV_PATH_LIST (temp, "PATH");
2094 char *startp, *endp;
2095 char *nstore = (char *) alloca (strlen (temp) + strlen (progname) + 1);
2097 startp = endp = temp;
2100 if (*endp == PATH_SEPARATOR || *endp == 0)
2105 nstore[1] = DIR_SEPARATOR;
2110 strncpy (nstore, startp, endp - startp);
2111 if (! IS_DIR_SEPARATOR (endp[-1]))
2113 nstore[endp - startp] = DIR_SEPARATOR;
2114 nstore[endp - startp + 1] = 0;
2117 nstore[endp - startp] = 0;
2119 strcat (nstore, progname);
2120 if (! access (nstore, X_OK)
2121 #ifdef HAVE_EXECUTABLE_SUFFIX
2122 || ! access (strcat (nstore, EXECUTABLE_SUFFIX), X_OK)
2126 free_split_directories (prog_dirs);
2128 prog_dirs = split_directories (progname, &prog_num);
2134 endp = startp = endp + 1;
2142 /* Remove the program name from comparison of directory names. */
2145 /* Determine if the compiler is installed in the standard location, and if
2146 so, we don't need to specify relative directories. Also, if argv[0]
2147 doesn't contain any directory specifiers, there is not much we can do. */
2149 if (prog_num == bin_num)
2151 for (i = 0; i < bin_num; i++)
2153 if (strcmp (prog_dirs[i], bin_dirs[i]) != 0)
2157 if (prog_num <= 0 || i == bin_num)
2160 free_split_directories (prog_dirs);
2161 free_split_directories (bin_dirs);
2162 prog_dirs = bin_dirs = (char **) 0;
2167 prefix_dirs = split_directories (prefix, &prefix_num);
2169 /* Find how many directories are in common between bin_prefix & prefix. */
2170 n = (prefix_num < bin_num) ? prefix_num : bin_num;
2171 for (common = 0; common < n; common++)
2173 if (strcmp (bin_dirs[common], prefix_dirs[common]) != 0)
2177 /* If there are no common directories, there can be no relative prefix. */
2180 free_split_directories (prog_dirs);
2181 free_split_directories (bin_dirs);
2182 free_split_directories (prefix_dirs);
2186 /* Build up the pathnames in argv[0]. */
2187 for (i = 0; i < prog_num; i++)
2188 obstack_grow (&obstack, prog_dirs[i], strlen (prog_dirs[i]));
2190 /* Now build up the ..'s. */
2191 for (i = common; i < n; i++)
2193 obstack_grow (&obstack, DIR_UP, sizeof (DIR_UP) - 1);
2194 obstack_1grow (&obstack, DIR_SEPARATOR);
2197 /* Put in directories to move over to prefix. */
2198 for (i = common; i < prefix_num; i++)
2199 obstack_grow (&obstack, prefix_dirs[i], strlen (prefix_dirs[i]));
2201 free_split_directories (prog_dirs);
2202 free_split_directories (bin_dirs);
2203 free_split_directories (prefix_dirs);
2205 obstack_1grow (&obstack, '\0');
2206 return obstack_finish (&obstack);
2210 /* Check whether NAME can be accessed in MODE. This is like access,
2211 except that it never considers directories to be executable. */
2214 access_check (name, mode)
2222 if (stat (name, &st) < 0
2223 || S_ISDIR (st.st_mode))
2227 return access (name, mode);
2230 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2231 access to check permissions.
2232 Return 0 if not found, otherwise return its name, allocated with malloc. */
2235 find_a_file (pprefix, name, mode)
2236 struct path_prefix *pprefix;
2241 const char *file_suffix = ((mode & X_OK) != 0 ? EXECUTABLE_SUFFIX : "");
2242 struct prefix_list *pl;
2243 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1;
2245 #ifdef DEFAULT_ASSEMBLER
2246 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2247 return xstrdup (DEFAULT_ASSEMBLER);
2250 #ifdef DEFAULT_LINKER
2251 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2252 return xstrdup (DEFAULT_LINKER);
2256 len += strlen (machine_suffix);
2258 temp = xmalloc (len);
2260 /* Determine the filename to execute (special case for absolute paths). */
2262 if (IS_ABSOLUTE_PATHNAME (name))
2264 if (access (name, mode) == 0)
2266 strcpy (temp, name);
2271 for (pl = pprefix->plist; pl; pl = pl->next)
2275 /* Some systems have a suffix for executable files.
2276 So try appending that first. */
2277 if (file_suffix[0] != 0)
2279 strcpy (temp, pl->prefix);
2280 strcat (temp, machine_suffix);
2281 strcat (temp, name);
2282 strcat (temp, file_suffix);
2283 if (access_check (temp, mode) == 0)
2285 if (pl->used_flag_ptr != 0)
2286 *pl->used_flag_ptr = 1;
2291 /* Now try just the name. */
2292 strcpy (temp, pl->prefix);
2293 strcat (temp, machine_suffix);
2294 strcat (temp, name);
2295 if (access_check (temp, mode) == 0)
2297 if (pl->used_flag_ptr != 0)
2298 *pl->used_flag_ptr = 1;
2303 /* Certain prefixes are tried with just the machine type,
2304 not the version. This is used for finding as, ld, etc. */
2305 if (just_machine_suffix && pl->require_machine_suffix == 2)
2307 /* Some systems have a suffix for executable files.
2308 So try appending that first. */
2309 if (file_suffix[0] != 0)
2311 strcpy (temp, pl->prefix);
2312 strcat (temp, just_machine_suffix);
2313 strcat (temp, name);
2314 strcat (temp, file_suffix);
2315 if (access_check (temp, mode) == 0)
2317 if (pl->used_flag_ptr != 0)
2318 *pl->used_flag_ptr = 1;
2323 strcpy (temp, pl->prefix);
2324 strcat (temp, just_machine_suffix);
2325 strcat (temp, name);
2326 if (access_check (temp, mode) == 0)
2328 if (pl->used_flag_ptr != 0)
2329 *pl->used_flag_ptr = 1;
2334 /* Certain prefixes can't be used without the machine suffix
2335 when the machine or version is explicitly specified. */
2336 if (! pl->require_machine_suffix)
2338 /* Some systems have a suffix for executable files.
2339 So try appending that first. */
2340 if (file_suffix[0] != 0)
2342 strcpy (temp, pl->prefix);
2343 strcat (temp, name);
2344 strcat (temp, file_suffix);
2345 if (access_check (temp, mode) == 0)
2347 if (pl->used_flag_ptr != 0)
2348 *pl->used_flag_ptr = 1;
2353 strcpy (temp, pl->prefix);
2354 strcat (temp, name);
2355 if (access_check (temp, mode) == 0)
2357 if (pl->used_flag_ptr != 0)
2358 *pl->used_flag_ptr = 1;
2368 /* Ranking of prefixes in the sort list. -B prefixes are put before
2371 enum path_prefix_priority
2373 PREFIX_PRIORITY_B_OPT,
2374 PREFIX_PRIORITY_LAST
2377 /* Add an entry for PREFIX in PLIST. The PLIST is kept in assending
2378 order according to PRIORITY. Within each PRIORITY, new entries are
2381 If WARN is nonzero, we will warn if no file is found
2382 through this prefix. WARN should point to an int
2383 which will be set to 1 if this entry is used.
2385 COMPONENT is the value to be passed to update_path.
2387 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2388 the complete value of machine_suffix.
2389 2 means try both machine_suffix and just_machine_suffix. */
2392 add_prefix (pprefix, prefix, component, priority, require_machine_suffix, warn)
2393 struct path_prefix *pprefix;
2395 const char *component;
2396 /* enum prefix_priority */ int priority;
2397 int require_machine_suffix;
2400 struct prefix_list *pl, **prev;
2403 for (prev = &pprefix->plist;
2404 (*prev) != NULL && (*prev)->priority <= priority;
2405 prev = &(*prev)->next)
2408 /* Keep track of the longest prefix */
2410 prefix = update_path (prefix, component);
2411 len = strlen (prefix);
2412 if (len > pprefix->max_len)
2413 pprefix->max_len = len;
2415 pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
2416 pl->prefix = save_string (prefix, len);
2417 pl->require_machine_suffix = require_machine_suffix;
2418 pl->used_flag_ptr = warn;
2419 pl->priority = priority;
2423 /* Insert after PREV */
2428 /* Execute the command specified by the arguments on the current line of spec.
2429 When using pipes, this includes several piped-together commands
2430 with `|' between them.
2432 Return 0 if successful, -1 if failed. */
2438 int n_commands; /* # of command. */
2442 const char *prog; /* program name. */
2443 const char **argv; /* vector of args. */
2444 int pid; /* pid of process for this command. */
2447 struct command *commands; /* each command buffer with above info. */
2449 /* Count # of piped commands. */
2450 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2451 if (strcmp (argbuf[i], "|") == 0)
2454 /* Get storage for each command. */
2455 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2457 /* Split argbuf into its separate piped processes,
2458 and record info about each one.
2459 Also search for the programs that are to be run. */
2461 commands[0].prog = argbuf[0]; /* first command. */
2462 commands[0].argv = &argbuf[0];
2463 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK);
2466 commands[0].argv[0] = string;
2468 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2469 if (strcmp (argbuf[i], "|") == 0)
2470 { /* each command. */
2471 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2472 fatal ("-pipe not supported");
2474 argbuf[i] = 0; /* termination of command args. */
2475 commands[n_commands].prog = argbuf[i + 1];
2476 commands[n_commands].argv = &argbuf[i + 1];
2477 string = find_a_file (&exec_prefixes, commands[n_commands].prog, X_OK);
2479 commands[n_commands].argv[0] = string;
2483 argbuf[argbuf_index] = 0;
2485 /* If -v, print what we are about to do, and maybe query. */
2489 /* For help listings, put a blank line between sub-processes. */
2490 if (print_help_list)
2491 fputc ('\n', stderr);
2493 /* Print each piped command as a separate line. */
2494 for (i = 0; i < n_commands; i++)
2496 const char *const *j;
2498 for (j = commands[i].argv; *j; j++)
2499 fprintf (stderr, " %s", *j);
2501 /* Print a pipe symbol after all but the last command. */
2502 if (i + 1 != n_commands)
2503 fprintf (stderr, " |");
2504 fprintf (stderr, "\n");
2508 notice ("\nGo ahead? (y or n) ");
2512 while (getchar () != '\n')
2515 if (i != 'y' && i != 'Y')
2520 /* Run each piped subprocess. */
2522 for (i = 0; i < n_commands; i++)
2524 char *errmsg_fmt, *errmsg_arg;
2525 const char *string = commands[i].argv[0];
2527 /* For some bizarre reason, the second argument of execvp() is
2528 char *const *, not const char *const *. */
2529 commands[i].pid = pexecute (string, (char *const *) commands[i].argv,
2530 programname, temp_filename,
2531 &errmsg_fmt, &errmsg_arg,
2532 ((i == 0 ? PEXECUTE_FIRST : 0)
2533 | (i + 1 == n_commands ? PEXECUTE_LAST : 0)
2534 | (string == commands[i].prog
2535 ? PEXECUTE_SEARCH : 0)
2536 | (verbose_flag ? PEXECUTE_VERBOSE : 0)));
2538 if (commands[i].pid == -1)
2539 pfatal_pexecute (errmsg_fmt, errmsg_arg);
2541 if (string != commands[i].prog)
2542 free ((PTR) string);
2547 /* Wait for all the subprocesses to finish.
2548 We don't care what order they finish in;
2549 we know that N_COMMANDS waits will get them all.
2550 Ignore subprocesses that we don't know about,
2551 since they can be spawned by the process that exec'ed us. */
2555 #ifdef HAVE_GETRUSAGE
2557 double ut = 0.0, st = 0.0;
2560 for (i = 0; i < n_commands;)
2566 pid = pwait (commands[i].pid, &status, 0);
2570 #ifdef HAVE_GETRUSAGE
2573 /* getrusage returns the total resource usage of all children
2574 up to now. Copy the previous values into prus, get the
2575 current statistics, then take the difference. */
2578 getrusage (RUSAGE_CHILDREN, &rus);
2579 d.tv_sec = rus.ru_utime.tv_sec - prus.ru_utime.tv_sec;
2580 d.tv_usec = rus.ru_utime.tv_usec - prus.ru_utime.tv_usec;
2581 ut = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2583 d.tv_sec = rus.ru_stime.tv_sec - prus.ru_stime.tv_sec;
2584 d.tv_usec = rus.ru_stime.tv_usec - prus.ru_stime.tv_usec;
2585 st = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2589 for (j = 0; j < n_commands; j++)
2590 if (commands[j].pid == pid)
2593 if (WIFSIGNALED (status))
2596 /* SIGPIPE is a special case. It happens in -pipe mode
2597 when the compiler dies before the preprocessor is
2598 done, or the assembler dies before the compiler is
2599 done. There's generally been an error already, and
2600 this is just fallout. So don't generate another error
2601 unless we would otherwise have succeeded. */
2602 if (WTERMSIG (status) == SIGPIPE
2603 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2608 Internal error: %s (program %s)\n\
2609 Please submit a full bug report.\n\
2610 See %s for instructions.",
2611 strsignal (WTERMSIG (status)), commands[j].prog,
2616 else if (WIFEXITED (status)
2617 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2619 if (WEXITSTATUS (status) > greatest_status)
2620 greatest_status = WEXITSTATUS (status);
2623 #ifdef HAVE_GETRUSAGE
2624 if (report_times && ut + st != 0)
2625 notice ("# %s %.2f %.2f\n", commands[j].prog, ut, st);
2634 /* Find all the switches given to us
2635 and make a vector describing them.
2636 The elements of the vector are strings, one per switch given.
2637 If a switch uses following arguments, then the `part1' field
2638 is the switch itself and the `args' field
2639 is a null-terminated vector containing the following arguments.
2640 The `live_cond' field is:
2642 1 if the switch is true in a conditional spec,
2643 -1 if false (overridden by a later switch)
2644 -2 if this switch should be ignored (used in %{<S})
2645 The `validated' field is nonzero if any spec has looked at this switch;
2646 if it remains zero at the end of the run, it must be meaningless. */
2649 #define SWITCH_FALSE -1
2650 #define SWITCH_IGNORE -2
2651 #define SWITCH_LIVE 1
2661 static struct switchstr *switches;
2663 static int n_switches;
2668 const char *language;
2671 /* Also a vector of input files specified. */
2673 static struct infile *infiles;
2675 static int n_infiles;
2677 /* This counts the number of libraries added by lang_specific_driver, so that
2678 we can tell if there were any user supplied any files or libraries. */
2680 static int added_libraries;
2682 /* And a vector of corresponding output files is made up later. */
2684 static const char **outfiles;
2686 /* Used to track if none of the -B paths are used. */
2689 /* Used to track if standard path isn't used and -b or -V is specified. */
2690 static int warn_std;
2692 /* Gives value to pass as "warn" to add_prefix for standard prefixes. */
2693 static int *warn_std_ptr = 0;
2695 #if defined(HAVE_OBJECT_SUFFIX) || defined(HAVE_EXECUTABLE_SUFFIX)
2697 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2698 is true if we should look for an executable suffix as well. */
2701 convert_filename (name, do_exe)
2711 len = strlen (name);
2713 #ifdef HAVE_OBJECT_SUFFIX
2714 /* Convert x.o to x.obj if OBJECT_SUFFIX is ".obj". */
2716 && name[len - 2] == '.'
2717 && name[len - 1] == 'o')
2719 obstack_grow (&obstack, name, len - 2);
2720 obstack_grow0 (&obstack, OBJECT_SUFFIX, strlen (OBJECT_SUFFIX));
2721 name = obstack_finish (&obstack);
2725 #ifdef HAVE_EXECUTABLE_SUFFIX
2726 /* If there is no filetype, make it the executable suffix (which includes
2727 the "."). But don't get confused if we have just "-o". */
2728 if (! do_exe || EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
2731 for (i = len - 1; i >= 0; i--)
2732 if (IS_DIR_SEPARATOR (name[i]))
2735 for (i++; i < len; i++)
2739 obstack_grow (&obstack, name, len);
2740 obstack_grow0 (&obstack, EXECUTABLE_SUFFIX, strlen (EXECUTABLE_SUFFIX));
2741 name = obstack_finish (&obstack);
2748 /* Display the command line switches accepted by gcc. */
2752 printf (_("Usage: %s [options] file...\n"), programname);
2753 fputs (_("Options:\n"), stdout);
2755 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
2756 fputs (_(" --help Display this information\n"), stdout);
2757 fputs (_(" --target-help Display target specific command line options\n"), stdout);
2759 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
2760 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
2761 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
2762 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
2763 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
2764 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
2765 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
2766 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
2767 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
2769 -print-multi-lib Display the mapping between command line options and\n\
2770 multiple library search directories\n"), stdout);
2771 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
2772 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
2773 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
2774 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
2775 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
2776 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
2777 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
2778 fputs (_(" -specs=<file> Override builtin specs with the contents of <file>\n"), stdout);
2779 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
2780 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
2781 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
2782 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
2783 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
2784 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
2785 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
2786 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
2787 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
2789 -x <language> Specify the language of the following input files\n\
2790 Permissable languages include: c c++ assembler none\n\
2791 'none' means revert to the default behaviour of\n\
2792 guessing the language based on the file's extension\n\
2796 \nOptions starting with -g, -f, -m, -O or -W are automatically passed on to\n\
2797 the various sub-processes invoked by %s. In order to pass other options\n\
2798 on to these processes the -W<letter> options must be used.\n\
2801 /* The rest of the options are displayed by invocations of the various
2806 add_preprocessor_option (option, len)
2810 n_preprocessor_options++;
2812 if (! preprocessor_options)
2813 preprocessor_options
2814 = (char **) xmalloc (n_preprocessor_options * sizeof (char *));
2816 preprocessor_options
2817 = (char **) xrealloc (preprocessor_options,
2818 n_preprocessor_options * sizeof (char *));
2820 preprocessor_options [n_preprocessor_options - 1] =
2821 save_string (option, len);
2825 add_assembler_option (option, len)
2829 n_assembler_options++;
2831 if (! assembler_options)
2833 = (char **) xmalloc (n_assembler_options * sizeof (char *));
2836 = (char **) xrealloc (assembler_options,
2837 n_assembler_options * sizeof (char *));
2839 assembler_options [n_assembler_options - 1] = save_string (option, len);
2843 add_linker_option (option, len)
2849 if (! linker_options)
2851 = (char **) xmalloc (n_linker_options * sizeof (char *));
2854 = (char **) xrealloc (linker_options,
2855 n_linker_options * sizeof (char *));
2857 linker_options [n_linker_options - 1] = save_string (option, len);
2860 /* Create the vector `switches' and its contents.
2861 Store its length in `n_switches'. */
2864 process_command (argc, argv)
2866 const char *const *argv;
2871 const char *spec_lang = 0;
2872 int last_language_n_infiles;
2875 int lang_n_infiles = 0;
2876 #ifdef MODIFY_TARGET_NAME
2877 int is_modify_target_name;
2881 GET_ENV_PATH_LIST (gcc_exec_prefix, "GCC_EXEC_PREFIX");
2885 added_libraries = 0;
2887 /* Figure compiler version from version string. */
2889 compiler_version = temp1 = xstrdup (version_string);
2891 for (; *temp1; ++temp1)
2900 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
2901 see if we can create it from the pathname specified in argv[0]. */
2904 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
2905 if (!gcc_exec_prefix)
2907 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
2908 standard_exec_prefix);
2909 if (gcc_exec_prefix)
2910 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL_PTR));
2914 if (gcc_exec_prefix)
2916 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], "-ftarget-help") == 0)
3087 /* translate_options() has turned --target-help into -ftarget-help. */
3088 target_help_flag = 1;
3090 /* We will be passing a dummy file on to the sub-processes. */
3094 add_preprocessor_option ("--target-help", 13);
3095 add_assembler_option ("--target-help", 13);
3096 add_linker_option ("--target-help", 13);
3098 else if (! strcmp (argv[i], "-pass-exit-codes"))
3100 pass_exit_codes = 1;
3103 else if (! strcmp (argv[i], "-print-search-dirs"))
3104 print_search_dirs = 1;
3105 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3106 print_file_name = "libgcc.a";
3107 else if (! strncmp (argv[i], "-print-file-name=", 17))
3108 print_file_name = argv[i] + 17;
3109 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3110 print_prog_name = argv[i] + 17;
3111 else if (! strcmp (argv[i], "-print-multi-lib"))
3112 print_multi_lib = 1;
3113 else if (! strcmp (argv[i], "-print-multi-directory"))
3114 print_multi_directory = 1;
3115 else if (! strncmp (argv[i], "-Wa,", 4))
3118 /* Pass the rest of this option to the assembler. */
3120 /* Split the argument at commas. */
3122 for (j = 4; argv[i][j]; j++)
3123 if (argv[i][j] == ',')
3125 add_assembler_option (argv[i] + prev, j - prev);
3129 /* Record the part after the last comma. */
3130 add_assembler_option (argv[i] + prev, j - prev);
3132 else if (! strncmp (argv[i], "-Wp,", 4))
3135 /* Pass the rest of this option to the preprocessor. */
3137 /* Split the argument at commas. */
3139 for (j = 4; argv[i][j]; j++)
3140 if (argv[i][j] == ',')
3142 add_preprocessor_option (argv[i] + prev, j - prev);
3146 /* Record the part after the last comma. */
3147 add_preprocessor_option (argv[i] + prev, j - prev);
3149 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3150 /* The +e options to the C++ front-end. */
3152 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3155 /* Split the argument at commas. */
3156 for (j = 3; argv[i][j]; j++)
3157 n_infiles += (argv[i][j] == ',');
3159 else if (strcmp (argv[i], "-Xlinker") == 0)
3162 fatal ("argument to `-Xlinker' is missing");
3167 else if (strncmp (argv[i], "-l", 2) == 0)
3169 else if (strcmp (argv[i], "-save-temps") == 0)
3171 save_temps_flag = 1;
3174 else if (strcmp (argv[i], "-specs") == 0)
3176 struct user_specs *user = (struct user_specs *)
3177 xmalloc (sizeof (struct user_specs));
3179 fatal ("argument to `-specs' is missing");
3181 user->next = (struct user_specs *) 0;
3182 user->filename = argv[i];
3183 if (user_specs_tail)
3184 user_specs_tail->next = user;
3186 user_specs_head = user;
3187 user_specs_tail = user;
3189 else if (strncmp (argv[i], "-specs=", 7) == 0)
3191 struct user_specs *user = (struct user_specs *)
3192 xmalloc (sizeof (struct user_specs));
3193 if (strlen (argv[i]) == 7)
3194 fatal ("argument to `-specs=' is missing");
3196 user->next = (struct user_specs *) 0;
3197 user->filename = argv[i] + 7;
3198 if (user_specs_tail)
3199 user_specs_tail->next = user;
3201 user_specs_head = user;
3202 user_specs_tail = user;
3204 else if (strcmp (argv[i], "-time") == 0)
3206 else if (argv[i][0] == '-' && argv[i][1] != 0)
3208 register const char *p = &argv[i][1];
3209 register int c = *p;
3215 if (p[1] == 0 && i + 1 == argc)
3216 fatal ("argument to `-b' is missing");
3218 spec_machine = argv[++i];
3220 spec_machine = p + 1;
3222 warn_std_ptr = &warn_std;
3228 if (p[1] == 0 && i + 1 == argc)
3229 fatal ("argument to `-B' is missing");
3235 /* As a kludge, if the arg is "[foo/]stageN/", just
3236 add "[foo/]include" to the include prefix. */
3237 int len = strlen (value);
3240 && (IS_DIR_SEPARATOR (value[len - 8]))))
3241 && strncmp (value + len - 7, "stage", 5) == 0
3242 && ISDIGIT (value[len - 2])
3243 && (IS_DIR_SEPARATOR (value[len - 1])))
3246 add_prefix (&include_prefixes, "include", NULL_PTR,
3247 PREFIX_PRIORITY_B_OPT, 0, NULL_PTR);
3250 char *string = xmalloc (len + 1);
3251 strncpy (string, value, len-7);
3252 strcpy (string+len-7, "include");
3253 add_prefix (&include_prefixes, string, NULL_PTR,
3254 PREFIX_PRIORITY_B_OPT, 0, NULL_PTR);
3258 add_prefix (&exec_prefixes, value, NULL_PTR,
3259 PREFIX_PRIORITY_B_OPT, 0, &warn_B);
3260 add_prefix (&startfile_prefixes, value, NULL_PTR,
3261 PREFIX_PRIORITY_B_OPT, 0, &warn_B);
3262 add_prefix (&include_prefixes, concat (value, "include",
3265 PREFIX_PRIORITY_B_OPT, 0, NULL_PTR);
3270 case 'v': /* Print our subcommands and print versions. */
3272 /* If they do anything other than exactly `-v', don't set
3273 verbose_flag; rather, continue on to give the error. */
3281 if (p[1] == 0 && i + 1 == argc)
3282 fatal ("argument to `-V' is missing");
3284 spec_version = argv[++i];
3286 spec_version = p + 1;
3287 compiler_version = spec_version;
3288 warn_std_ptr = &warn_std;
3290 /* Validate the version number. Use the same checks
3291 done when inserting it into a spec.
3293 The format of the version string is
3294 ([^0-9]*-)?[0-9]+[.][0-9]+([.][0-9]+)?([- ].*)? */
3296 const char *v = compiler_version;
3298 /* Ignore leading non-digits. i.e. "foo-" in "foo-2.7.2". */
3299 while (! ISDIGIT (*v))
3302 if (v > compiler_version && v[-1] != '-')
3303 fatal ("invalid version number format");
3305 /* Set V after the first period. */
3306 while (ISDIGIT (*v))
3310 fatal ("invalid version number format");
3313 while (ISDIGIT (*v))
3316 if (*v != 0 && *v != ' ' && *v != '.' && *v != '-')
3317 fatal ("invalid version number format");
3333 #if defined(HAVE_EXECUTABLE_SUFFIX)
3338 /* Forward scan, just in case -S or -c is specified
3345 if (argv[j][0] == '-')
3347 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
3353 else if (skip = SWITCH_TAKES_ARG (argv[j][1]))
3354 j += skip - (argv[j][2] != 0);
3355 else if (skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1))
3362 #if defined(HAVE_EXECUTABLE_SUFFIX) || defined(HAVE_OBJECT_SUFFIX)
3364 argv[i + 1] = convert_filename (argv[i + 1], ! have_c);
3366 argv[i] = convert_filename (argv[i], ! have_c);
3373 #ifdef MODIFY_TARGET_NAME
3374 is_modify_target_name = 0;
3377 j < sizeof modify_target / sizeof modify_target[0]; j++)
3378 if (! strcmp (argv[i], modify_target[j].sw))
3381 = (char *) xmalloc (strlen (modify_target[j].str)
3382 + strlen (spec_machine));
3385 int made_addition = 0;
3387 is_modify_target_name = 1;
3388 for (p = spec_machine, q = new_name; *p != 0; )
3390 if (modify_target[j].add_del == DELETE
3391 && (! strncmp (q, modify_target[j].str,
3392 strlen (modify_target[j].str))))
3393 p += strlen (modify_target[j].str);
3394 else if (modify_target[j].add_del == ADD
3395 && ! made_addition && *p == '-')
3397 for (r = modify_target[j].str; *r != 0; )
3405 spec_machine = new_name;
3408 if (is_modify_target_name)
3414 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
3415 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
3416 else if (WORD_SWITCH_TAKES_ARG (p))
3417 i += WORD_SWITCH_TAKES_ARG (p);
3427 if (have_c && have_o && lang_n_infiles > 1)
3428 fatal ("cannot specify -o with -c or -S and multiple compilations");
3430 /* Set up the search paths before we go looking for config files. */
3432 /* These come before the md prefixes so that we will find gcc's subcommands
3433 (such as cpp) rather than those of the host system. */
3434 /* Use 2 as fourth arg meaning try just the machine as a suffix,
3435 as well as trying the machine and the version. */
3437 add_prefix (&exec_prefixes, standard_exec_prefix, "GCC",
3438 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3439 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3440 PREFIX_PRIORITY_LAST, 2, warn_std_ptr);
3441 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS",
3442 PREFIX_PRIORITY_LAST, 2, warn_std_ptr);
3445 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3446 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3447 add_prefix (&startfile_prefixes, standard_exec_prefix_1, "BINUTILS",
3448 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3450 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3451 dir_separator_str, NULL_PTR);
3453 /* If tooldir is relative, base it on exec_prefixes. A relative
3454 tooldir lets us move the installed tree as a unit.
3456 If GCC_EXEC_PREFIX is defined, then we want to add two relative
3457 directories, so that we can search both the user specified directory
3458 and the standard place. */
3460 if (!IS_ABSOLUTE_PATHNAME (tooldir_prefix))
3462 if (gcc_exec_prefix)
3464 char *gcc_exec_tooldir_prefix
3465 = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
3466 spec_version, dir_separator_str, tooldir_prefix, NULL_PTR);
3468 add_prefix (&exec_prefixes,
3469 concat (gcc_exec_tooldir_prefix, "bin",
3470 dir_separator_str, NULL_PTR),
3471 NULL_PTR, PREFIX_PRIORITY_LAST, 0, NULL_PTR);
3472 add_prefix (&startfile_prefixes,
3473 concat (gcc_exec_tooldir_prefix, "lib",
3474 dir_separator_str, NULL_PTR),
3475 NULL_PTR, PREFIX_PRIORITY_LAST, 0, NULL_PTR);
3478 tooldir_prefix = concat (standard_exec_prefix, spec_machine,
3479 dir_separator_str, spec_version,
3480 dir_separator_str, tooldir_prefix, NULL_PTR);
3483 add_prefix (&exec_prefixes,
3484 concat (tooldir_prefix, "bin", dir_separator_str, NULL_PTR),
3485 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL_PTR);
3486 add_prefix (&startfile_prefixes,
3487 concat (tooldir_prefix, "lib", dir_separator_str, NULL_PTR),
3488 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL_PTR);
3490 /* More prefixes are enabled in main, after we read the specs file
3491 and determine whether this is cross-compilation or not. */
3493 /* Then create the space for the vectors and scan again. */
3495 switches = ((struct switchstr *)
3496 xmalloc ((n_switches + 1) * sizeof (struct switchstr)));
3497 infiles = (struct infile *) xmalloc ((n_infiles + 1) * sizeof (struct infile));
3500 last_language_n_infiles = -1;
3502 /* This, time, copy the text of each switch and store a pointer
3503 to the copy in the vector of switches.
3504 Store all the infiles in their vector. */
3506 for (i = 1; i < argc; i++)
3508 /* Just skip the switches that were handled by the preceding loop. */
3509 #ifdef MODIFY_TARGET_NAME
3510 is_modify_target_name = 0;
3512 for (j = 0; j < sizeof modify_target / sizeof modify_target[0]; j++)
3513 if (! strcmp (argv[i], modify_target[j].sw))
3514 is_modify_target_name = 1;
3516 if (is_modify_target_name)
3520 if (! strncmp (argv[i], "-Wa,", 4))
3522 else if (! strncmp (argv[i], "-Wp,", 4))
3524 else if (! strcmp (argv[i], "-pass-exit-codes"))
3526 else if (! strcmp (argv[i], "-print-search-dirs"))
3528 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3530 else if (! strncmp (argv[i], "-print-file-name=", 17))
3532 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3534 else if (! strcmp (argv[i], "-print-multi-lib"))
3536 else if (! strcmp (argv[i], "-print-multi-directory"))
3538 else if (strcmp (argv[i], "-ftarget-help") == 0)
3540 /* Create a dummy input file, so that we can pass --target-help on to
3541 the various sub-processes. */
3542 infiles[n_infiles].language = "c";
3543 infiles[n_infiles++].name = "target-dummy";
3545 /* Preserve the --target-help switch so that it can be caught by
3546 the cc1 spec string. */
3547 switches[n_switches].part1 = "--target-help";
3548 switches[n_switches].args = 0;
3549 switches[n_switches].live_cond = SWITCH_OK;
3550 switches[n_switches].validated = 0;
3554 else if (strcmp (argv[i], "-fhelp") == 0)
3558 /* Create a dummy input file, so that we can pass --help on to
3559 the various sub-processes. */
3560 infiles[n_infiles].language = "c";
3561 infiles[n_infiles++].name = "help-dummy";
3563 /* Preserve the --help switch so that it can be caught by the
3565 switches[n_switches].part1 = "--help";
3566 switches[n_switches].args = 0;
3567 switches[n_switches].live_cond = SWITCH_OK;
3568 switches[n_switches].validated = 0;
3573 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3575 /* Compensate for the +e options to the C++ front-end;
3576 they're there simply for cfront call-compatibility. We do
3577 some magic in default_compilers to pass them down properly.
3578 Note we deliberately start at the `+' here, to avoid passing
3579 -e0 or -e1 down into the linker. */
3580 switches[n_switches].part1 = &argv[i][0];
3581 switches[n_switches].args = 0;
3582 switches[n_switches].live_cond = SWITCH_OK;
3583 switches[n_switches].validated = 0;
3586 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3589 /* Split the argument at commas. */
3591 for (j = 4; argv[i][j]; j++)
3592 if (argv[i][j] == ',')
3594 infiles[n_infiles].language = "*";
3595 infiles[n_infiles++].name
3596 = save_string (argv[i] + prev, j - prev);
3599 /* Record the part after the last comma. */
3600 infiles[n_infiles].language = "*";
3601 infiles[n_infiles++].name = argv[i] + prev;
3603 else if (strcmp (argv[i], "-Xlinker") == 0)
3605 infiles[n_infiles].language = "*";
3606 infiles[n_infiles++].name = argv[++i];
3608 else if (strncmp (argv[i], "-l", 2) == 0)
3610 infiles[n_infiles].language = "*";
3611 infiles[n_infiles++].name = argv[i];
3613 else if (strcmp (argv[i], "-specs") == 0)
3615 else if (strncmp (argv[i], "-specs=", 7) == 0)
3617 else if (strcmp (argv[i], "-time") == 0)
3619 else if ((save_temps_flag || report_times)
3620 && strcmp (argv[i], "-pipe") == 0)
3622 /* -save-temps overrides -pipe, so that temp files are produced */
3623 if (save_temps_flag)
3624 error ("Warning: -pipe ignored because -save-temps specified");
3625 /* -time overrides -pipe because we can't get correct stats when
3626 multiple children are running at once. */
3627 else if (report_times)
3628 error ("Warning: -pipe ignored because -time specified");
3630 else if (argv[i][0] == '-' && argv[i][1] != 0)
3632 const char *p = &argv[i][1];
3637 if (p[1] == 0 && i + 1 == argc)
3638 fatal ("argument to `-x' is missing");
3640 spec_lang = argv[++i];
3643 if (! strcmp (spec_lang, "none"))
3644 /* Suppress the warning if -xnone comes after the last input
3645 file, because alternate command interfaces like g++ might
3646 find it useful to place -xnone after each input file. */
3649 last_language_n_infiles = n_infiles;
3652 switches[n_switches].part1 = p;
3653 /* Deal with option arguments in separate argv elements. */
3654 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
3655 || WORD_SWITCH_TAKES_ARG (p))
3658 int n_args = WORD_SWITCH_TAKES_ARG (p);
3662 /* Count only the option arguments in separate argv elements. */
3663 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
3665 if (i + n_args >= argc)
3666 fatal ("argument to `-%s' is missing", p);
3667 switches[n_switches].args
3668 = (const char **) xmalloc ((n_args + 1) * sizeof(const char *));
3670 switches[n_switches].args[j++] = argv[++i];
3671 /* Null-terminate the vector. */
3672 switches[n_switches].args[j] = 0;
3674 else if (strchr (switches_need_spaces, c))
3676 /* On some systems, ld cannot handle some options without
3677 a space. So split the option from its argument. */
3678 char *part1 = (char *) xmalloc (2);
3683 switches[n_switches].part1 = part1;
3684 switches[n_switches].args
3685 = (const char **) xmalloc (2 * sizeof (const char *));
3686 switches[n_switches].args[0] = tmp = xmalloc (strlen (p));
3687 strcpy (tmp, &p[1]);
3688 switches[n_switches].args[1] = 0;
3691 switches[n_switches].args = 0;
3693 switches[n_switches].live_cond = SWITCH_OK;
3694 switches[n_switches].validated = 0;
3695 /* This is always valid, since gcc.c itself understands it. */
3696 if (!strcmp (p, "save-temps"))
3697 switches[n_switches].validated = 1;
3700 char ch = switches[n_switches].part1[0];
3701 if (ch == 'V' || ch == 'b' || ch == 'B')
3702 switches[n_switches].validated = 1;
3708 #ifdef HAVE_OBJECT_SUFFIX
3709 argv[i] = convert_filename (argv[i], 0);
3712 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
3714 perror_with_name (argv[i]);
3719 infiles[n_infiles].language = spec_lang;
3720 infiles[n_infiles++].name = argv[i];
3725 if (n_infiles == last_language_n_infiles && spec_lang != 0)
3726 error ("Warning: `-x %s' after last input file has no effect", spec_lang);
3728 switches[n_switches].part1 = 0;
3729 infiles[n_infiles].name = 0;
3732 /* Process a spec string, accumulating and running commands. */
3734 /* These variables describe the input file name.
3735 input_file_number is the index on outfiles of this file,
3736 so that the output file name can be stored for later use by %o.
3737 input_basename is the start of the part of the input file
3738 sans all directory names, and basename_length is the number
3739 of characters starting there excluding the suffix .c or whatever. */
3741 const char *input_filename;
3742 static int input_file_number;
3743 size_t input_filename_length;
3744 static int basename_length;
3745 static int suffixed_basename_length;
3746 static const char *input_basename;
3747 static const char *input_suffix;
3749 /* These are variables used within do_spec and do_spec_1. */
3751 /* Nonzero if an arg has been started and not yet terminated
3752 (with space, tab or newline). */
3753 static int arg_going;
3755 /* Nonzero means %d or %g has been seen; the next arg to be terminated
3756 is a temporary file name. */
3757 static int delete_this_arg;
3759 /* Nonzero means %w has been seen; the next arg to be terminated
3760 is the output file name of this compilation. */
3761 static int this_is_output_file;
3763 /* Nonzero means %s has been seen; the next arg to be terminated
3764 is the name of a library file and we should try the standard
3765 search dirs for it. */
3766 static int this_is_library_file;
3768 /* Nonzero means that the input of this command is coming from a pipe. */
3769 static int input_from_pipe;
3771 /* Process the spec SPEC and run the commands specified therein.
3772 Returns 0 if the spec is successfully processed; -1 if failed. */
3782 delete_this_arg = 0;
3783 this_is_output_file = 0;
3784 this_is_library_file = 0;
3785 input_from_pipe = 0;
3787 value = do_spec_1 (spec, 0, NULL_PTR);
3789 /* Force out any unfinished command.
3790 If -pipe, this forces out the last command if it ended in `|'. */
3793 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
3796 if (argbuf_index > 0)
3803 /* Process the sub-spec SPEC as a portion of a larger spec.
3804 This is like processing a whole spec except that we do
3805 not initialize at the beginning and we do not supply a
3806 newline by default at the end.
3807 INSWITCH nonzero means don't process %-sequences in SPEC;
3808 in this case, % is treated as an ordinary character.
3809 This is used while substituting switches.
3810 INSWITCH nonzero also causes SPC not to terminate an argument.
3812 Value is zero unless a line was finished
3813 and the command on that line reported an error. */
3816 do_spec_1 (spec, inswitch, soft_matched_part)
3819 const char *soft_matched_part;
3821 register const char *p = spec;
3828 /* If substituting a switch, treat all chars like letters.
3829 Otherwise, NL, SPC, TAB and % are special. */
3830 switch (inswitch ? 'a' : c)
3833 /* End of line: finish any pending argument,
3834 then run the pending command if one has been started. */
3837 obstack_1grow (&obstack, 0);
3838 string = obstack_finish (&obstack);
3839 if (this_is_library_file)
3840 string = find_file (string);
3841 store_arg (string, delete_this_arg, this_is_output_file);
3842 if (this_is_output_file)
3843 outfiles[input_file_number] = string;
3847 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
3849 for (i = 0; i < n_switches; i++)
3850 if (!strcmp (switches[i].part1, "pipe"))
3853 /* A `|' before the newline means use a pipe here,
3854 but only if -pipe was specified.
3855 Otherwise, execute now and don't pass the `|' as an arg. */
3858 input_from_pipe = 1;
3859 switches[i].validated = 1;
3866 if (argbuf_index > 0)
3872 /* Reinitialize for a new command, and for a new argument. */
3875 delete_this_arg = 0;
3876 this_is_output_file = 0;
3877 this_is_library_file = 0;
3878 input_from_pipe = 0;
3882 /* End any pending argument. */
3885 obstack_1grow (&obstack, 0);
3886 string = obstack_finish (&obstack);
3887 if (this_is_library_file)
3888 string = find_file (string);
3889 store_arg (string, delete_this_arg, this_is_output_file);
3890 if (this_is_output_file)
3891 outfiles[input_file_number] = string;
3895 obstack_1grow (&obstack, c);
3901 /* Space or tab ends an argument if one is pending. */
3904 obstack_1grow (&obstack, 0);
3905 string = obstack_finish (&obstack);
3906 if (this_is_library_file)
3907 string = find_file (string);
3908 store_arg (string, delete_this_arg, this_is_output_file);
3909 if (this_is_output_file)
3910 outfiles[input_file_number] = string;
3912 /* Reinitialize for a new argument. */
3914 delete_this_arg = 0;
3915 this_is_output_file = 0;
3916 this_is_library_file = 0;
3923 fatal ("Invalid specification! Bug in cc.");
3926 obstack_grow (&obstack, input_basename, basename_length);
3931 obstack_grow (&obstack, input_basename, suffixed_basename_length);
3936 delete_this_arg = 2;
3939 /* Dump out the directories specified with LIBRARY_PATH,
3940 followed by the absolute directories
3941 that we search for startfiles. */
3944 struct prefix_list *pl = startfile_prefixes.plist;
3945 size_t bufsize = 100;
3946 char *buffer = (char *) xmalloc (bufsize);
3949 for (; pl; pl = pl->next)
3951 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
3952 /* Used on systems which record the specified -L dirs
3953 and use them to search for dynamic linking. */
3954 /* Relative directories always come from -B,
3955 and it is better not to use them for searching
3956 at run time. In particular, stage1 loses. */
3957 if (!IS_ABSOLUTE_PATHNAME (pl->prefix))
3960 /* Try subdirectory if there is one. */
3961 if (multilib_dir != NULL)
3965 if (strlen (pl->prefix) + strlen (machine_suffix)
3967 bufsize = (strlen (pl->prefix)
3968 + strlen (machine_suffix)) * 2 + 1;
3969 buffer = (char *) xrealloc (buffer, bufsize);
3970 strcpy (buffer, pl->prefix);
3971 strcat (buffer, machine_suffix);
3972 if (is_directory (buffer, multilib_dir, 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 (buffer, 1, NULL_PTR);
3979 do_spec_1 (multilib_dir, 1, NULL_PTR);
3980 /* Make this a separate argument. */
3981 do_spec_1 (" ", 0, NULL_PTR);
3984 if (!pl->require_machine_suffix)
3986 if (is_directory (pl->prefix, multilib_dir, 1))
3988 do_spec_1 ("-L", 0, NULL_PTR);
3989 #ifdef SPACE_AFTER_L_OPTION
3990 do_spec_1 (" ", 0, NULL_PTR);
3992 do_spec_1 (pl->prefix, 1, NULL_PTR);
3993 do_spec_1 (multilib_dir, 1, NULL_PTR);
3994 /* Make this a separate argument. */
3995 do_spec_1 (" ", 0, NULL_PTR);
4001 if (is_directory (pl->prefix, machine_suffix, 1))
4003 do_spec_1 ("-L", 0, NULL_PTR);
4004 #ifdef SPACE_AFTER_L_OPTION
4005 do_spec_1 (" ", 0, NULL_PTR);
4007 do_spec_1 (pl->prefix, 1, NULL_PTR);
4008 /* Remove slash from machine_suffix. */
4009 if (strlen (machine_suffix) >= bufsize)
4010 bufsize = strlen (machine_suffix) * 2 + 1;
4011 buffer = (char *) xrealloc (buffer, bufsize);
4012 strcpy (buffer, machine_suffix);
4013 idx = strlen (buffer);
4014 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4015 buffer[idx - 1] = 0;
4016 do_spec_1 (buffer, 1, NULL_PTR);
4017 /* Make this a separate argument. */
4018 do_spec_1 (" ", 0, NULL_PTR);
4021 if (!pl->require_machine_suffix)
4023 if (is_directory (pl->prefix, "", 1))
4025 do_spec_1 ("-L", 0, NULL_PTR);
4026 #ifdef SPACE_AFTER_L_OPTION
4027 do_spec_1 (" ", 0, NULL_PTR);
4029 /* Remove slash from pl->prefix. */
4030 if (strlen (pl->prefix) >= bufsize)
4031 bufsize = strlen (pl->prefix) * 2 + 1;
4032 buffer = (char *) xrealloc (buffer, bufsize);
4033 strcpy (buffer, pl->prefix);
4034 idx = strlen (buffer);
4035 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4036 buffer[idx - 1] = 0;
4037 do_spec_1 (buffer, 1, NULL_PTR);
4038 /* Make this a separate argument. */
4039 do_spec_1 (" ", 0, NULL_PTR);
4048 /* %efoo means report an error with `foo' as error message
4049 and don't execute any more commands for this file. */
4053 while (*p != 0 && *p != '\n')
4055 buf = (char *) alloca (p - q + 1);
4056 strncpy (buf, q, p - q);
4067 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is defined,
4068 and it is not a directory, and it is writable, use it.
4069 Otherwise, fall through and treat this like any other
4072 if ((!save_temps_flag)
4073 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4074 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4076 obstack_grow (&obstack, HOST_BIT_BUCKET,
4077 strlen (HOST_BIT_BUCKET));
4078 delete_this_arg = 0;
4086 if (save_temps_flag)
4088 obstack_grow (&obstack, input_basename, basename_length);
4089 delete_this_arg = 0;
4093 struct temp_name *t;
4095 const char *suffix = p;
4096 char *saved_suffix = NULL;
4098 while (*p == '.' || ISALPHA ((unsigned char) *p))
4100 suffix_length = p - suffix;
4101 if (p[0] == '%' && p[1] == 'O')
4104 /* We don't support extra suffix characters after %O. */
4105 if (*p == '.' || ISALPHA ((unsigned char) *p))
4107 if (suffix_length == 0)
4108 suffix = OBJECT_SUFFIX;
4112 = (char *) xmalloc (suffix_length
4113 + strlen (OBJECT_SUFFIX));
4114 strncpy (saved_suffix, suffix, suffix_length);
4115 strcpy (saved_suffix + suffix_length,
4118 suffix_length += strlen (OBJECT_SUFFIX);
4121 /* See if we already have an association of %g/%u/%U and
4123 for (t = temp_names; t; t = t->next)
4124 if (t->length == suffix_length
4125 && strncmp (t->suffix, suffix, suffix_length) == 0
4126 && t->unique == (c != 'g'))
4129 /* Make a new association if needed. %u and %j require one. */
4130 if (t == 0 || c == 'u' || c == 'j')
4134 t = (struct temp_name *) xmalloc (sizeof (struct temp_name));
4135 t->next = temp_names;
4138 t->length = suffix_length;
4139 t->suffix = save_string (suffix, suffix_length);
4140 t->unique = (c != 'g');
4141 temp_filename = make_temp_file (t->suffix);
4142 temp_filename_length = strlen (temp_filename);
4143 t->filename = temp_filename;
4144 t->filename_length = temp_filename_length;
4148 free (saved_suffix);
4150 obstack_grow (&obstack, t->filename, t->filename_length);
4151 delete_this_arg = 1;
4157 obstack_grow (&obstack, input_filename, input_filename_length);
4163 struct prefix_list *pl = include_prefixes.plist;
4165 if (gcc_exec_prefix)
4167 do_spec_1 ("-iprefix", 1, NULL_PTR);
4168 /* Make this a separate argument. */
4169 do_spec_1 (" ", 0, NULL_PTR);
4170 do_spec_1 (gcc_exec_prefix, 1, NULL_PTR);
4171 do_spec_1 (" ", 0, NULL_PTR);
4174 for (; pl; pl = pl->next)
4176 do_spec_1 ("-isystem", 1, NULL_PTR);
4177 /* Make this a separate argument. */
4178 do_spec_1 (" ", 0, NULL_PTR);
4179 do_spec_1 (pl->prefix, 1, NULL_PTR);
4180 do_spec_1 (" ", 0, NULL_PTR);
4187 int max = n_infiles;
4188 max += lang_specific_extra_outfiles;
4190 for (i = 0; i < max; i++)
4192 store_arg (outfiles[i], 0, 0);
4197 obstack_grow (&obstack, OBJECT_SUFFIX, strlen (OBJECT_SUFFIX));
4202 this_is_library_file = 1;
4206 this_is_output_file = 1;
4211 int cur_index = argbuf_index;
4212 /* Handle the {...} following the %W. */
4215 p = handle_braces (p + 1);
4218 /* If any args were output, mark the last one for deletion
4220 if (argbuf_index != cur_index)
4221 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
4225 /* %x{OPTION} records OPTION for %X to output. */
4231 /* Skip past the option value and make a copy. */
4236 string = save_string (p1 + 1, p - p1 - 2);
4238 /* See if we already recorded this option. */
4239 for (i = 0; i < n_linker_options; i++)
4240 if (! strcmp (string, linker_options[i]))
4246 /* This option is new; add it. */
4247 add_linker_option (string, strlen (string));
4251 /* Dump out the options accumulated previously using %x. */
4253 for (i = 0; i < n_linker_options; i++)
4255 do_spec_1 (linker_options[i], 1, NULL_PTR);
4256 /* Make each accumulated option a separate argument. */
4257 do_spec_1 (" ", 0, NULL_PTR);
4261 /* Dump out the options accumulated previously using -Wa,. */
4263 for (i = 0; i < n_assembler_options; i++)
4265 do_spec_1 (assembler_options[i], 1, NULL_PTR);
4266 /* Make each accumulated option a separate argument. */
4267 do_spec_1 (" ", 0, NULL_PTR);
4271 /* Dump out the options accumulated previously using -Wp,. */
4273 for (i = 0; i < n_preprocessor_options; i++)
4275 do_spec_1 (preprocessor_options[i], 1, NULL_PTR);
4276 /* Make each accumulated option a separate argument. */
4277 do_spec_1 (" ", 0, NULL_PTR);
4281 /* Here are digits and numbers that just process
4282 a certain constant string as a spec. */
4285 value = do_spec_1 (cc1_spec, 0, NULL_PTR);
4291 value = do_spec_1 (cc1plus_spec, 0, NULL_PTR);
4297 value = do_spec_1 (asm_spec, 0, NULL_PTR);
4303 value = do_spec_1 (asm_final_spec, 0, NULL_PTR);
4309 value = do_spec_1 (signed_char_spec, 0, NULL_PTR);
4315 value = do_spec_1 (cpp_spec, 0, NULL_PTR);
4321 value = do_spec_1 (endfile_spec, 0, NULL_PTR);
4327 value = do_spec_1 (link_spec, 0, NULL_PTR);
4333 value = do_spec_1 (lib_spec, 0, NULL_PTR);
4339 value = do_spec_1 (libgcc_spec, 0, NULL_PTR);
4346 char *x = (char *) alloca (strlen (cpp_predefines) + 1);
4350 /* Copy all of the -D options in CPP_PREDEFINES into BUF. */
4354 if (! strncmp (y, "-D", 2))
4355 /* Copy the whole option. */
4356 while (*y && *y != ' ' && *y != '\t')
4358 else if (*y == ' ' || *y == '\t')
4359 /* Copy whitespace to the result. */
4361 /* Don't copy other options. */
4368 value = do_spec_1 (buf, 0, NULL_PTR);
4376 char *x = (char *) alloca (strlen (cpp_predefines) * 4 + 1);
4380 /* Copy all of CPP_PREDEFINES into BUF,
4381 but force them all into the reserved name space if they
4382 aren't already there. The reserved name space is all
4383 identifiers beginning with two underscores or with one
4384 underscore and a capital letter. We do the forcing by
4385 adding up to two underscores to the beginning and end
4386 of each symbol. e.g. mips, _mips, mips_, and _mips_ all
4391 if (! strncmp (y, "-D", 2))
4400 && ! ISUPPER ((unsigned char) *(y + 1))))
4402 /* Stick __ at front of macro name. */
4406 /* Arrange to stick __ at the end as well. */
4410 /* Copy the macro name. */
4411 while (*y && *y != '=' && *y != ' ' && *y != '\t')
4424 /* Copy the value given, if any. */
4425 while (*y && *y != ' ' && *y != '\t')
4428 else if (*y == ' ' || *y == '\t')
4429 /* Copy whitespace to the result. */
4431 /* Don't copy -A options */
4437 /* Copy all of CPP_PREDEFINES into BUF,
4438 but put __ after every -D. */
4442 if (! strncmp (y, "-D", 2))
4448 && ! ISUPPER ((unsigned char) *(y + 1))))
4450 /* Stick -D__ at front of macro name. */
4457 /* Copy the macro name. */
4458 while (*y && *y != '=' && *y != ' ' && *y != '\t')
4461 /* Copy the value given, if any. */
4462 while (*y && *y != ' ' && *y != '\t')
4467 /* Do not copy this macro - we have just done it before */
4468 while (*y && *y != ' ' && *y != '\t')
4472 else if (*y == ' ' || *y == '\t')
4473 /* Copy whitespace to the result. */
4475 /* Don't copy -A options. */
4481 /* Copy all of the -A options in CPP_PREDEFINES into BUF. */
4485 if (! strncmp (y, "-A", 2))
4486 /* Copy the whole option. */
4487 while (*y && *y != ' ' && *y != '\t')
4489 else if (*y == ' ' || *y == '\t')
4490 /* Copy whitespace to the result. */
4492 /* Don't copy other options. */
4499 value = do_spec_1 (buf, 0, NULL_PTR);
4506 value = do_spec_1 (startfile_spec, 0, NULL_PTR);
4511 /* Here we define characters other than letters and digits. */
4514 p = handle_braces (p);
4520 obstack_1grow (&obstack, '%');
4524 if (soft_matched_part)
4526 do_spec_1 (soft_matched_part, 1, NULL_PTR);
4527 do_spec_1 (" ", 0, NULL_PTR);
4530 /* Catch the case where a spec string contains something like
4531 '%{foo:%*}'. ie there is no * in the pattern on the left
4532 hand side of the :. */
4533 error ("Spec failure: '%%*' has not been initialised by pattern match");
4536 /* Process a string found as the value of a spec given by name.
4537 This feature allows individual machine descriptions
4538 to add and use their own specs.
4539 %[...] modifies -D options the way %P does;
4540 %(...) uses the spec unmodified. */
4542 error ("Warning: use of obsolete %%[ operator in specs");
4545 const char *name = p;
4546 struct spec_list *sl;
4549 /* The string after the S/P is the name of a spec that is to be
4551 while (*p && *p != ')' && *p != ']')
4554 /* See if it's in the list. */
4555 for (len = p - name, sl = specs; sl; sl = sl->next)
4556 if (sl->name_len == len && !strncmp (sl->name, name, len))
4558 name = *(sl->ptr_spec);
4560 notice ("Processing spec %c%s%c, which is '%s'\n",
4561 c, sl->name, (c == '(') ? ')' : ']', name);
4570 value = do_spec_1 (name, 0, NULL_PTR);
4576 char *x = (char *) alloca (strlen (name) * 2 + 1);
4578 const char *y = name;
4581 /* Copy all of NAME into BUF, but put __ after
4582 every -D and at the end of each arg. */
4585 if (! strncmp (y, "-D", 2))
4596 && (*y == ' ' || *y == '\t' || *y == '='
4597 || *y == '}' || *y == 0))
4610 value = do_spec_1 (buf, 0, NULL_PTR);
4616 /* Discard the closing paren or bracket. */
4624 int c1 = *p++; /* Select first or second version number. */
4625 const char *v = compiler_version;
4627 static const char zeroc = '0';
4629 /* The format of the version string is
4630 ([^0-9]*-)?[0-9]+[.][0-9]+([.][0-9]+)?([- ].*)? */
4632 /* Ignore leading non-digits. i.e. "foo-" in "foo-2.7.2". */
4633 while (! ISDIGIT (*v))
4635 if (v > compiler_version && v[-1] != '-')
4638 /* If desired, advance to second version number. */
4641 /* Set V after the first period. */
4642 while (ISDIGIT (*v))
4649 /* If desired, advance to third version number.
4650 But don't complain if it's not present */
4653 /* Set V after the second period. */
4654 while (ISDIGIT (*v))
4656 if ((*v != 0) && (*v != ' ') && (*v != '.') && (*v != '-'))
4662 /* Set Q at the next period or at the end. */
4664 while (ISDIGIT (*q))
4666 if (*q != 0 && q > v && *q != ' ' && *q != '.' && *q != '-')
4670 /* Put that part into the command. */
4671 obstack_grow (&obstack, v, q - v);
4673 /* Default to "0" */
4674 obstack_grow (&obstack, &zeroc, 1);
4680 if (input_from_pipe)
4681 do_spec_1 ("-", 0, NULL_PTR);
4685 error ("Spec failure: Unrecognised spec option '%c'", c);
4691 /* Backslash: treat next character as ordinary. */
4696 /* Ordinary character: put it into the current argument. */
4697 obstack_1grow (&obstack, c);
4701 /* End of string. */
4705 /* Return 0 if we call do_spec_1 and that returns -1. */
4709 register const char *p;
4711 const char *filter, *body = NULL, *endbody = NULL;
4713 int true_once = 0; /* If, in %{a|b:d}, at least one of a,b was seen. */
4716 int include_blanks = 1;
4717 int elide_switch = 0;
4721 /* A '^' after the open-brace means to not give blanks before args. */
4728 /* A `|' after the open-brace means,
4729 if the test fails, output a single minus sign rather than nothing.
4730 This is used in %{|!pipe:...}. */
4737 /* A `<' after the open-brace means that the switch should be
4738 removed from the command-line. */
4744 negate = suffix = 0;
4747 /* A `!' after the open-brace negates the condition:
4748 succeed if the specified switch is not present. */
4752 /* A `.' after the open-brace means test against the current suffix. */
4761 if (elide_switch && (negate || pipe_p || suffix))
4763 /* It doesn't make sense to mix elision with other flags. We
4764 could fatal() here, but the standard seems to be to abort. */
4769 while (*p != ':' && *p != '}' && *p != '|')
4772 if (*p == '|' && pipe_p)
4779 register int count = 1;
4780 register const char *q = p;
4799 body = p, endbody = p + 1;
4804 int found = (input_suffix != 0
4805 && (long) strlen (input_suffix) == (long) (p - filter)
4806 && strncmp (input_suffix, filter, p - filter) == 0);
4812 && do_spec_1 (save_string (body, endbody-body-1), 0, NULL_PTR) < 0)
4815 else if (p[-1] == '*' && p[0] == '}')
4817 /* Substitute all matching switches as separate args. */
4820 for (i = 0; i < n_switches; i++)
4821 if (!strncmp (switches[i].part1, filter, p - filter)
4822 && check_live_switch (i, p - filter))
4823 give_switch (i, 0, include_blanks);
4827 /* Test for presence of the specified switch. */
4831 /* If name specified ends in *, as in {x*:...},
4832 check for %* and handle that case. */
4833 if (p[-1] == '*' && !negate)
4836 const char *r = body;
4838 /* First see whether we have %*. */
4842 if (*r == '%' && r[1] == '*')
4846 /* If we do, handle that case. */
4849 /* Substitute all matching switches as separate args.
4850 But do this by substituting for %*
4851 in the text that follows the colon. */
4853 unsigned hard_match_len = p - filter - 1;
4854 char *string = save_string (body, endbody - body - 1);
4856 for (i = 0; i < n_switches; i++)
4857 if (!strncmp (switches[i].part1, filter, hard_match_len)
4858 && check_live_switch (i, -1))
4860 do_spec_1 (string, 0, &switches[i].part1[hard_match_len]);
4861 /* Pass any arguments this switch has. */
4862 give_switch (i, 1, 1);
4865 /* We didn't match. Try again. */
4872 /* If name specified ends in *, as in {x*:...},
4873 check for presence of any switch name starting with x. */
4876 for (i = 0; i < n_switches; i++)
4878 unsigned hard_match_len = p - filter - 1;
4880 if (!strncmp (switches[i].part1, filter, hard_match_len)
4881 && check_live_switch (i, hard_match_len))
4888 /* Otherwise, check for presence of exact name specified. */
4891 for (i = 0; i < n_switches; i++)
4893 if (!strncmp (switches[i].part1, filter, p - filter)
4894 && switches[i].part1[p - filter] == 0
4895 && check_live_switch (i, -1))
4903 /* If it is as desired (present for %{s...}, absent for %{!s...})
4904 then substitute either the switch or the specified
4905 conditional text. */
4906 if (present != negate)
4910 switches[i].live_cond = SWITCH_IGNORE;
4911 switches[i].validated = 1;
4915 give_switch (i, 0, include_blanks);
4918 /* Even if many alternatives are matched, only output once. */
4923 /* Here if a %{|...} conditional fails: output a minus sign,
4924 which means "standard output" or "standard input". */
4925 do_spec_1 ("-", 0, NULL_PTR);
4930 /* We didn't match; try again. */
4934 /* Process the spec just once, regardless of match count. */
4937 if (do_spec_1 (save_string (body, endbody - body - 1),
4945 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
4946 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
4947 spec, or -1 if either exact match or %* is used.
4949 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
4950 whose value does not begin with "no-" is obsoleted by the same value
4951 with the "no-", similarly for a switch with the "no-" prefix. */
4954 check_live_switch (switchnum, prefix_length)
4958 const char *name = switches[switchnum].part1;
4961 /* In the common case of {<at-most-one-letter>*}, a negating
4962 switch would always match, so ignore that case. We will just
4963 send the conflicting switches to the compiler phase. */
4964 if (prefix_length >= 0 && prefix_length <= 1)
4967 /* If we already processed this switch and determined if it was
4968 live or not, return our past determination. */
4969 if (switches[switchnum].live_cond != 0)
4970 return switches[switchnum].live_cond > 0;
4972 /* Now search for duplicate in a manner that depends on the name. */
4976 for (i = switchnum + 1; i < n_switches; i++)
4977 if (switches[i].part1[0] == 'O')
4979 switches[switchnum].validated = 1;
4980 switches[switchnum].live_cond = SWITCH_FALSE;
4985 case 'W': case 'f': case 'm':
4986 if (! strncmp (name + 1, "no-", 3))
4988 /* We have Xno-YYY, search for XYYY. */
4989 for (i = switchnum + 1; i < n_switches; i++)
4990 if (switches[i].part1[0] == name[0]
4991 && ! strcmp (&switches[i].part1[1], &name[4]))
4993 switches[switchnum].validated = 1;
4994 switches[switchnum].live_cond = SWITCH_FALSE;
5000 /* We have XYYY, search for Xno-YYY. */
5001 for (i = switchnum + 1; i < n_switches; i++)
5002 if (switches[i].part1[0] == name[0]
5003 && switches[i].part1[1] == 'n'
5004 && switches[i].part1[2] == 'o'
5005 && switches[i].part1[3] == '-'
5006 && !strcmp (&switches[i].part1[4], &name[1]))
5008 switches[switchnum].validated = 1;
5009 switches[switchnum].live_cond = SWITCH_FALSE;
5016 /* Otherwise the switch is live. */
5017 switches[switchnum].live_cond = SWITCH_LIVE;
5021 /* Pass a switch to the current accumulating command
5022 in the same form that we received it.
5023 SWITCHNUM identifies the switch; it is an index into
5024 the vector of switches gcc received, which is `switches'.
5025 This cannot fail since it never finishes a command line.
5027 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument.
5029 If INCLUDE_BLANKS is nonzero, then we include blanks before each argument
5033 give_switch (switchnum, omit_first_word, include_blanks)
5035 int omit_first_word;
5038 if (switches[switchnum].live_cond == SWITCH_IGNORE)
5041 if (!omit_first_word)
5043 do_spec_1 ("-", 0, NULL_PTR);
5044 do_spec_1 (switches[switchnum].part1, 1, NULL_PTR);
5047 if (switches[switchnum].args != 0)
5050 for (p = switches[switchnum].args; *p; p++)
5053 do_spec_1 (" ", 0, NULL_PTR);
5054 do_spec_1 (*p, 1, NULL_PTR);
5058 do_spec_1 (" ", 0, NULL_PTR);
5059 switches[switchnum].validated = 1;
5062 /* Search for a file named NAME trying various prefixes including the
5063 user's -B prefix and some standard ones.
5064 Return the absolute file name found. If nothing is found, return NAME. */
5072 /* Try multilib_dir if it is defined. */
5073 if (multilib_dir != NULL)
5077 try = (char *) alloca (strlen (multilib_dir) + strlen (name) + 2);
5078 strcpy (try, multilib_dir);
5079 strcat (try, dir_separator_str);
5082 newname = find_a_file (&startfile_prefixes, try, R_OK);
5084 /* If we don't find it in the multi library dir, then fall
5085 through and look for it in the normal places. */
5086 if (newname != NULL)
5090 newname = find_a_file (&startfile_prefixes, name, R_OK);
5091 return newname ? newname : name;
5094 /* Determine whether a directory exists. If LINKER, return 0 for
5095 certain fixed names not needed by the linker. If not LINKER, it is
5096 only important to return 0 if the host machine has a small ARG_MAX
5100 is_directory (path1, path2, linker)
5105 int len1 = strlen (path1);
5106 int len2 = strlen (path2);
5107 char *path = (char *) alloca (3 + len1 + len2);
5111 #ifndef SMALL_ARG_MAX
5116 /* Construct the path from the two parts. Ensure the string ends with "/.".
5117 The resulting path will be a directory even if the given path is a
5119 memcpy (path, path1, len1);
5120 memcpy (path + len1, path2, len2);
5121 cp = path + len1 + len2;
5122 if (!IS_DIR_SEPARATOR (cp[-1]))
5123 *cp++ = DIR_SEPARATOR;
5127 /* Exclude directories that the linker is known to search. */
5130 && strcmp (path, concat (dir_separator_str, "lib",
5131 dir_separator_str, ".", NULL_PTR)) == 0)
5133 && strcmp (path, concat (dir_separator_str, "usr",
5134 dir_separator_str, "lib",
5135 dir_separator_str, ".", NULL_PTR)) == 0)))
5138 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5141 /* Set up the various global variables to indicate that we're processing
5142 the input file named FILENAME. */
5145 set_input (filename)
5146 const char *filename;
5148 register const char *p;
5150 input_filename = filename;
5151 input_filename_length = strlen (input_filename);
5153 input_basename = input_filename;
5154 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
5155 /* Skip drive name so 'x:foo' is handled properly. */
5156 if (input_basename[1] == ':')
5157 input_basename += 2;
5159 for (p = input_basename; *p; p++)
5160 if (IS_DIR_SEPARATOR (*p))
5161 input_basename = p + 1;
5163 /* Find a suffix starting with the last period,
5164 and set basename_length to exclude that suffix. */
5165 basename_length = strlen (input_basename);
5166 suffixed_basename_length = basename_length;
5167 p = input_basename + basename_length;
5168 while (p != input_basename && *p != '.')
5170 if (*p == '.' && p != input_basename)
5172 basename_length = p - input_basename;
5173 input_suffix = p + 1;
5179 /* On fatal signals, delete all the temporary files. */
5182 fatal_error (signum)
5185 signal (signum, SIG_DFL);
5186 delete_failure_queue ();
5187 delete_temp_files ();
5188 /* Get the same signal again, this time not handled,
5189 so its normal effect occurs. */
5190 kill (getpid (), signum);
5193 extern int main PARAMS ((int, const char *const *));
5198 const char *const *argv;
5202 int linker_was_run = 0;
5203 char *explicit_link_files;
5206 struct user_specs *uptr;
5208 p = argv[0] + strlen (argv[0]);
5209 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
5213 #ifdef GCC_DRIVER_HOST_INITIALIZATION
5214 /* Perform host dependant initialization when needed. */
5215 GCC_DRIVER_HOST_INITIALIZATION;
5218 #ifdef HAVE_LC_MESSAGES
5219 setlocale (LC_MESSAGES, "");
5221 (void) bindtextdomain (PACKAGE, localedir);
5222 (void) textdomain (PACKAGE);
5224 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
5225 signal (SIGINT, fatal_error);
5227 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
5228 signal (SIGHUP, fatal_error);
5230 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
5231 signal (SIGTERM, fatal_error);
5233 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
5234 signal (SIGPIPE, fatal_error);
5238 argbuf = (const char **) xmalloc (argbuf_length * sizeof (const char *));
5240 obstack_init (&obstack);
5242 /* Build multilib_select, et. al from the separate lines that make up each
5243 multilib selection. */
5245 const char *const *q = multilib_raw;
5248 obstack_init (&multilib_obstack);
5249 while ((p = *q++) != (char *) 0)
5250 obstack_grow (&multilib_obstack, p, strlen (p));
5252 obstack_1grow (&multilib_obstack, 0);
5253 multilib_select = obstack_finish (&multilib_obstack);
5255 q = multilib_matches_raw;
5256 while ((p = *q++) != (char *) 0)
5257 obstack_grow (&multilib_obstack, p, strlen (p));
5259 obstack_1grow (&multilib_obstack, 0);
5260 multilib_matches = obstack_finish (&multilib_obstack);
5262 q = multilib_exclusions_raw;
5263 while ((p = *q++) != (char *) 0)
5264 obstack_grow (&multilib_obstack, p, strlen (p));
5266 obstack_1grow (&multilib_obstack, 0);
5267 multilib_exclusions = obstack_finish (&multilib_obstack);
5270 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
5273 obstack_1grow (&multilib_obstack, ' ');
5274 obstack_grow (&multilib_obstack,
5275 multilib_defaults_raw[i],
5276 strlen (multilib_defaults_raw[i]));
5280 obstack_1grow (&multilib_obstack, 0);
5281 multilib_defaults = obstack_finish (&multilib_obstack);
5284 /* Set up to remember the pathname of gcc and any options
5285 needed for collect. We use argv[0] instead of programname because
5286 we need the complete pathname. */
5287 obstack_init (&collect_obstack);
5288 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
5289 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
5290 putenv (obstack_finish (&collect_obstack));
5292 #ifdef INIT_ENVIRONMENT
5293 /* Set up any other necessary machine specific environment variables. */
5294 putenv (INIT_ENVIRONMENT);
5297 /* Make a table of what switches there are (switches, n_switches).
5298 Make a table of specified input files (infiles, n_infiles).
5299 Decode switches that are handled locally. */
5301 process_command (argc, argv);
5306 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
5308 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
5309 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
5312 for (i = 0; (int) i < n_switches; i++)
5314 const char *const *args;
5317 obstack_grow (&collect_obstack, " ", 1);
5320 obstack_grow (&collect_obstack, "'-", 2);
5321 q = switches[i].part1;
5322 while ((p = strchr (q, '\'')))
5324 obstack_grow (&collect_obstack, q, p - q);
5325 obstack_grow (&collect_obstack, "'\\''", 4);
5328 obstack_grow (&collect_obstack, q, strlen (q));
5329 obstack_grow (&collect_obstack, "'", 1);
5331 for (args = switches[i].args; args && *args; args++)
5333 obstack_grow (&collect_obstack, " '", 2);
5335 while ((p = strchr (q, '\'')))
5337 obstack_grow (&collect_obstack, q, p - q);
5338 obstack_grow (&collect_obstack, "'\\''", 4);
5341 obstack_grow (&collect_obstack, q, strlen (q));
5342 obstack_grow (&collect_obstack, "'", 1);
5345 obstack_grow (&collect_obstack, "\0", 1);
5346 putenv (obstack_finish (&collect_obstack));
5349 /* Initialize the vector of specs to just the default.
5350 This means one element containing 0s, as a terminator. */
5352 compilers = (struct compiler *) xmalloc (sizeof default_compilers);
5353 memcpy ((char *) compilers, (char *) default_compilers,
5354 sizeof default_compilers);
5355 n_compilers = n_default_compilers;
5357 /* Read specs from a file if there is one. */
5359 machine_suffix = concat (spec_machine, dir_separator_str,
5360 spec_version, dir_separator_str, NULL_PTR);
5361 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL_PTR);
5363 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK);
5364 /* Read the specs file unless it is a default one. */
5365 if (specs_file != 0 && strcmp (specs_file, "specs"))
5366 read_specs (specs_file, TRUE);
5370 /* We need to check standard_exec_prefix/just_machine_suffix/specs
5371 for any override of as, ld and libraries. */
5372 specs_file = (char *) alloca (strlen (standard_exec_prefix)
5373 + strlen (just_machine_suffix)
5374 + sizeof ("specs"));
5376 strcpy (specs_file, standard_exec_prefix);
5377 strcat (specs_file, just_machine_suffix);
5378 strcat (specs_file, "specs");
5379 if (access (specs_file, R_OK) == 0)
5380 read_specs (specs_file, TRUE);
5382 /* If not cross-compiling, look for startfiles in the standard places. */
5383 if (*cross_compile == '0')
5385 if (*md_exec_prefix)
5387 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
5388 PREFIX_PRIORITY_LAST, 0, NULL_PTR);
5389 add_prefix (&startfile_prefixes, md_exec_prefix, "GCC",
5390 PREFIX_PRIORITY_LAST, 0, NULL_PTR);
5393 if (*md_startfile_prefix)
5394 add_prefix (&startfile_prefixes, md_startfile_prefix, "GCC",
5395 PREFIX_PRIORITY_LAST, 0, NULL_PTR);
5397 if (*md_startfile_prefix_1)
5398 add_prefix (&startfile_prefixes, md_startfile_prefix_1, "GCC",
5399 PREFIX_PRIORITY_LAST, 0, NULL_PTR);
5401 /* If standard_startfile_prefix is relative, base it on
5402 standard_exec_prefix. This lets us move the installed tree
5403 as a unit. If GCC_EXEC_PREFIX is defined, base
5404 standard_startfile_prefix on that as well. */
5405 if (IS_ABSOLUTE_PATHNAME (standard_startfile_prefix))
5406 add_prefix (&startfile_prefixes, standard_startfile_prefix, "BINUTILS",
5407 PREFIX_PRIORITY_LAST, 0, NULL_PTR);
5410 if (gcc_exec_prefix)
5411 add_prefix (&startfile_prefixes,
5412 concat (gcc_exec_prefix, machine_suffix,
5413 standard_startfile_prefix, NULL_PTR),
5414 NULL_PTR, PREFIX_PRIORITY_LAST, 0, NULL_PTR);
5415 add_prefix (&startfile_prefixes,
5416 concat (standard_exec_prefix,
5418 standard_startfile_prefix, NULL_PTR),
5419 NULL_PTR, PREFIX_PRIORITY_LAST, 0, NULL_PTR);
5422 add_prefix (&startfile_prefixes, standard_startfile_prefix_1,
5423 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL_PTR);
5424 add_prefix (&startfile_prefixes, standard_startfile_prefix_2,
5425 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL_PTR);
5426 #if 0 /* Can cause surprises, and one can use -B./ instead. */
5427 add_prefix (&startfile_prefixes, "./", NULL_PTR,
5428 PREFIX_PRIORITY_LAST, 1, NULL_PTR);
5433 if (!IS_ABSOLUTE_PATHNAME (standard_startfile_prefix)
5435 add_prefix (&startfile_prefixes,
5436 concat (gcc_exec_prefix, machine_suffix,
5437 standard_startfile_prefix, NULL_PTR),
5438 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL_PTR);
5441 /* Process any user specified specs in the order given on the command
5443 for (uptr = user_specs_head; uptr; uptr = uptr->next)
5445 char *filename = find_a_file (&startfile_prefixes, uptr->filename, R_OK);
5446 read_specs (filename ? filename : uptr->filename, FALSE);
5449 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
5450 if (gcc_exec_prefix)
5452 char *temp = (char *) xmalloc (strlen (gcc_exec_prefix)
5453 + strlen (spec_version)
5454 + strlen (spec_machine) + 3);
5455 strcpy (temp, gcc_exec_prefix);
5456 strcat (temp, spec_machine);
5457 strcat (temp, dir_separator_str);
5458 strcat (temp, spec_version);
5459 strcat (temp, dir_separator_str);
5460 gcc_exec_prefix = temp;
5463 /* Now we have the specs.
5464 Set the `valid' bits for switches that match anything in any spec. */
5466 validate_all_switches ();
5468 /* Now that we have the switches and the specs, set
5469 the subdirectory based on the options. */
5470 set_multilib_dir ();
5472 /* Warn about any switches that no pass was interested in. */
5474 for (i = 0; (int) i < n_switches; i++)
5475 if (! switches[i].validated)
5476 error ("unrecognized option `-%s'", switches[i].part1);
5478 /* Obey some of the options. */
5480 if (print_search_dirs)
5482 printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix);
5483 printf (_("programs: %s\n"), build_search_list (&exec_prefixes, "", 0));
5484 printf (_("libraries: %s\n"), build_search_list (&startfile_prefixes, "", 0));
5488 if (print_file_name)
5490 printf ("%s\n", find_file (print_file_name));
5494 if (print_prog_name)
5496 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK);
5497 printf ("%s\n", (newname ? newname : print_prog_name));
5501 if (print_multi_lib)
5503 print_multilib_info ();
5507 if (print_multi_directory)
5509 if (multilib_dir == NULL)
5512 printf ("%s\n", multilib_dir);
5516 if (target_help_flag)
5518 /* Print if any target specific options.*/
5520 /* We do not exit here. Instead we have created a fake input file
5521 called 'target-dummy' which needs to be compiled, and we pass this
5522 on to the various sub-processes, along with the --target-help
5526 if (print_help_list)
5532 printf (_("\nFor bug reporting instructions, please see:\n"));
5533 printf ("%s.\n", GCCBUGURL);
5538 /* We do not exit here. Instead we have created a fake input file
5539 called 'help-dummy' which needs to be compiled, and we pass this
5540 on the the various sub-processes, along with the --help switch. */
5547 notice ("Configured with: %s\n", configuration_arguments);
5549 /* compiler_version is truncated at the first space when initialized
5550 from version string, so truncate version_string at the first space
5551 before comparing. */
5552 for (n = 0; version_string[n]; n++)
5553 if (version_string[n] == ' ')
5556 if (! strncmp (version_string, compiler_version, n)
5557 && compiler_version[n] == 0)
5558 notice ("gcc version %s\n", version_string);
5560 notice ("gcc driver version %s executing gcc version %s\n",
5561 version_string, compiler_version);
5567 if (n_infiles == added_libraries)
5568 fatal ("No input files");
5570 /* Make a place to record the compiler output file names
5571 that correspond to the input files. */
5574 i += lang_specific_extra_outfiles;
5575 outfiles = (const char **) xcalloc (i, sizeof (char *));
5577 /* Record which files were specified explicitly as link input. */
5579 explicit_link_files = xcalloc (1, n_infiles);
5581 for (i = 0; (int) i < n_infiles; i++)
5583 register struct compiler *cp = 0;
5584 int this_file_error = 0;
5586 /* Tell do_spec what to substitute for %i. */
5588 input_file_number = i;
5589 set_input (infiles[i].name);
5591 /* Use the same thing in %o, unless cp->spec says otherwise. */
5593 outfiles[i] = input_filename;
5595 /* Figure out which compiler from the file's suffix. */
5597 cp = lookup_compiler (infiles[i].name, input_filename_length,
5598 infiles[i].language);
5602 /* Ok, we found an applicable compiler. Run its spec. */
5604 if (cp->spec[0] == '#')
5605 error ("%s: %s compiler not installed on this system",
5606 input_filename, &cp->spec[1]);
5607 value = do_spec (cp->spec);
5609 this_file_error = 1;
5612 /* If this file's name does not contain a recognized suffix,
5613 record it as explicit linker input. */
5616 explicit_link_files[i] = 1;
5618 /* Clear the delete-on-failure queue, deleting the files in it
5619 if this compilation failed. */
5621 if (this_file_error)
5623 delete_failure_queue ();
5626 /* If this compilation succeeded, don't delete those files later. */
5627 clear_failure_queue ();
5630 /* Reset the output file name to the first input file name, for use
5631 with %b in LINK_SPEC on a target that prefers not to emit a.out
5634 set_input (infiles[0].name);
5636 if (error_count == 0)
5638 /* Make sure INPUT_FILE_NUMBER points to first available open
5640 input_file_number = n_infiles;
5641 if (lang_specific_pre_link ())
5645 /* Run ld to link all the compiler output files. */
5647 if (error_count == 0)
5649 int tmp = execution_count;
5651 /* We'll use ld if we can't find collect2. */
5652 if (! strcmp (linker_name_spec, "collect2"))
5654 char *s = find_a_file (&exec_prefixes, "collect2", X_OK);
5656 linker_name_spec = "ld";
5658 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
5660 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH");
5661 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV);
5663 value = do_spec (link_command_spec);
5666 linker_was_run = (tmp != execution_count);
5669 /* If options said don't run linker,
5670 complain about input files to be given to the linker. */
5672 if (! linker_was_run && error_count == 0)
5673 for (i = 0; (int) i < n_infiles; i++)
5674 if (explicit_link_files[i])
5675 error ("%s: linker input file unused because linking not done",
5678 /* Delete some or all of the temporary files we made. */
5681 delete_failure_queue ();
5682 delete_temp_files ();
5684 if (print_help_list)
5686 printf (("\nFor bug reporting instructions, please see:\n"));
5687 printf ("%s\n", GCCBUGURL);
5690 return (signal_count != 0 ? 2
5691 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
5695 /* Find the proper compilation spec for the file name NAME,
5696 whose length is LENGTH. LANGUAGE is the specified language,
5697 or 0 if this file is to be passed to the linker. */
5699 static struct compiler *
5700 lookup_compiler (name, length, language)
5703 const char *language;
5705 struct compiler *cp;
5707 /* If this was specified by the user to be a linker input, indicate that. */
5708 if (language != 0 && language[0] == '*')
5711 /* Otherwise, look for the language, if one is spec'd. */
5714 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
5715 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
5718 error ("language %s not recognized", language);
5722 /* Look for a suffix. */
5723 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
5725 if (/* The suffix `-' matches only the file name `-'. */
5726 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
5727 || (strlen (cp->suffix) < length
5728 /* See if the suffix matches the end of NAME. */
5729 && !strcmp (cp->suffix,
5730 name + length - strlen (cp->suffix))
5735 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
5736 /* look again, but case-insensitively this time. */
5738 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
5740 if (/* The suffix `-' matches only the file name `-'. */
5741 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
5742 || (strlen (cp->suffix) < length
5743 /* See if the suffix matches the end of NAME. */
5744 && ((!strcmp (cp->suffix,
5745 name + length - strlen (cp->suffix))
5746 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
5747 && !strcasecmp (cp->suffix,
5748 name + length - strlen (cp->suffix)))
5754 if (cp >= compilers)
5756 if (cp->spec[0] != '@')
5757 /* A non-alias entry: return it. */
5760 /* An alias entry maps a suffix to a language.
5761 Search for the language; pass 0 for NAME and LENGTH
5762 to avoid infinite recursion if language not found. */
5763 return lookup_compiler (NULL_PTR, 0, cp->spec + 1);
5769 save_string (s, len)
5773 register char *result = xmalloc (len + 1);
5775 memcpy (result, s, len);
5781 pfatal_with_name (name)
5784 perror_with_name (name);
5785 delete_temp_files ();
5790 perror_with_name (name)
5793 error ("%s: %s", name, xstrerror (errno));
5797 pfatal_pexecute (errmsg_fmt, errmsg_arg)
5798 const char *errmsg_fmt;
5799 const char *errmsg_arg;
5803 int save_errno = errno;
5805 /* Space for trailing '\0' is in %s. */
5806 char *msg = xmalloc (strlen (errmsg_fmt) + strlen (errmsg_arg));
5807 sprintf (msg, errmsg_fmt, errmsg_arg);
5813 pfatal_with_name (errmsg_fmt);
5816 /* Output an error message and exit */
5821 fatal ("Internal gcc abort.");
5824 /* Output an error message and exit */
5827 fatal VPARAMS ((const char *msgid, ...))
5829 #ifndef ANSI_PROTOTYPES
5834 VA_START (ap, msgid);
5836 #ifndef ANSI_PROTOTYPES
5837 msgid = va_arg (ap, const char *);
5840 fprintf (stderr, "%s: ", programname);
5841 vfprintf (stderr, _(msgid), ap);
5843 fprintf (stderr, "\n");
5844 delete_temp_files ();
5849 error VPARAMS ((const char *msgid, ...))
5851 #ifndef ANSI_PROTOTYPES
5856 VA_START (ap, msgid);
5858 #ifndef ANSI_PROTOTYPES
5859 msgid = va_arg (ap, const char *);
5862 fprintf (stderr, "%s: ", programname);
5863 vfprintf (stderr, _(msgid), ap);
5866 fprintf (stderr, "\n");
5870 notice VPARAMS ((const char *msgid, ...))
5872 #ifndef ANSI_PROTOTYPES
5877 VA_START (ap, msgid);
5879 #ifndef ANSI_PROTOTYPES
5880 msgid = va_arg (ap, const char *);
5883 vfprintf (stderr, _(msgid), ap);
5888 validate_all_switches ()
5890 struct compiler *comp;
5891 register const char *p;
5893 struct spec_list *spec;
5895 for (comp = compilers; comp->spec; comp++)
5899 if (c == '%' && *p == '{')
5900 /* We have a switch spec. */
5901 validate_switches (p + 1);
5904 /* Look through the linked list of specs read from the specs file. */
5905 for (spec = specs; spec; spec = spec->next)
5907 p = *(spec->ptr_spec);
5909 if (c == '%' && *p == '{')
5910 /* We have a switch spec. */
5911 validate_switches (p + 1);
5914 p = link_command_spec;
5916 if (c == '%' && *p == '{')
5917 /* We have a switch spec. */
5918 validate_switches (p + 1);
5921 /* Look at the switch-name that comes after START
5922 and mark as valid all supplied switches that match it. */
5925 validate_switches (start)
5928 register const char *p = start;
5945 while (*p != ':' && *p != '}' && *p != '|')
5950 else if (p[-1] == '*')
5952 /* Mark all matching switches as valid. */
5953 for (i = 0; i < n_switches; i++)
5954 if (!strncmp (switches[i].part1, filter, p - filter - 1))
5955 switches[i].validated = 1;
5959 /* Mark an exact matching switch as valid. */
5960 for (i = 0; i < n_switches; i++)
5962 if (!strncmp (switches[i].part1, filter, p - filter)
5963 && switches[i].part1[p - filter] == 0)
5964 switches[i].validated = 1;
5972 /* Check whether a particular argument was used. The first time we
5973 canonicalize the switches to keep only the ones we care about. */
5983 const char *replace;
5988 static struct mswitchstr *mswitches;
5989 static int n_mswitches;
5994 struct mswitchstr *matches;
5998 /* Break multilib_matches into the component strings of string
5999 and replacement string. */
6000 for (q = multilib_matches; *q != '\0'; q++)
6005 (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
6007 q = multilib_matches;
6017 matches[i].len = q - matches[i].str;
6019 matches[i].replace = ++q;
6020 while (*q != ';' && *q != '\0')
6026 matches[i].rep_len = q - matches[i].replace;
6032 /* Now build a list of the replacement string for switches that we care
6033 about. Make sure we allocate at least one entry. This prevents
6034 xmalloc from calling fatal, and prevents us from re-executing this
6037 = (struct mswitchstr *) xmalloc ((sizeof (struct mswitchstr))
6038 * (n_switches ? n_switches : 1));
6039 for (i = 0; i < n_switches; i++)
6041 int xlen = strlen (switches[i].part1);
6042 for (j = 0; j < cnt; j++)
6043 if (xlen == matches[j].len
6044 && ! strncmp (switches[i].part1, matches[j].str, xlen))
6046 mswitches[n_mswitches].str = matches[j].replace;
6047 mswitches[n_mswitches].len = matches[j].rep_len;
6048 mswitches[n_mswitches].replace = (char *) 0;
6049 mswitches[n_mswitches].rep_len = 0;
6056 for (i = 0; i < n_mswitches; i++)
6057 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
6064 default_arg (p, len)
6068 const char *start, *end;
6070 for (start = multilib_defaults; *start != '\0'; start = end + 1)
6072 while (*start == ' ' || *start == '\t')
6078 for (end = start + 1; *end != ' ' && *end != '\t' && *end != '\0'; end++)
6081 if ((end - start) == len && strncmp (p, start, len) == 0)
6091 /* Work out the subdirectory to use based on the options. The format of
6092 multilib_select is a list of elements. Each element is a subdirectory
6093 name followed by a list of options followed by a semicolon. The format
6094 of multilib_exclusions is the same, but without the preceding
6095 directory. First gcc will check the exclusions, if none of the options
6096 beginning with an exclamation point are present, and all of the other
6097 options are present, then we will ignore this completely. Passing
6098 that, gcc will consider each multilib_select in turn using the same
6099 rules for matching the options. If a match is found, that subdirectory
6106 unsigned int this_path_len;
6107 const char *this_path, *this_arg;
6111 p = multilib_exclusions;
6114 /* Ignore newlines. */
6121 /* Check the arguments. */
6135 while (*p != ' ' && *p != ';')
6142 if (*this_arg != '!')
6150 ok = used_arg (this_arg, p - this_arg);
6164 p = multilib_select;
6167 /* Ignore newlines. */
6174 /* Get the initial path. */
6182 this_path_len = p - this_path;
6184 /* Check the arguments. */
6199 while (*p != ' ' && *p != ';')
6206 if (*this_arg != '!')
6214 /* If this is a default argument, we can just ignore it.
6215 This is true even if this_arg begins with '!'. Beginning
6216 with '!' does not mean that this argument is necessarily
6217 inappropriate for this library: it merely means that
6218 there is a more specific library which uses this
6219 argument. If this argument is a default, we need not
6220 consider that more specific library. */
6221 if (! default_arg (this_arg, p - this_arg))
6223 ok = used_arg (this_arg, p - this_arg);
6234 if (this_path_len != 1
6235 || this_path[0] != '.')
6237 char *new_multilib_dir = xmalloc (this_path_len + 1);
6238 strncpy (new_multilib_dir, this_path, this_path_len);
6239 new_multilib_dir[this_path_len] = '\0';
6240 multilib_dir = new_multilib_dir;
6249 /* Print out the multiple library subdirectory selection
6250 information. This prints out a series of lines. Each line looks
6251 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
6252 required. Only the desired options are printed out, the negative
6253 matches. The options are print without a leading dash. There are
6254 no spaces to make it easy to use the information in the shell.
6255 Each subdirectory is printed only once. This assumes the ordering
6256 generated by the genmultilib script. Also, we leave out ones that match
6260 print_multilib_info ()
6262 const char *p = multilib_select;
6263 const char *last_path = 0, *this_path;
6265 unsigned int last_path_len = 0;
6270 /* Ignore newlines. */
6277 /* Get the initial path. */
6286 /* Check for matches with the multilib_exclusions. We don't bother
6287 with the '!' in either list. If any of the exclusion rules match
6288 all of its options with the select rule, we skip it. */
6290 const char *e = multilib_exclusions;
6291 const char *this_arg;
6296 /* Ignore newlines. */
6303 /* Check the arguments. */
6320 while (*e != ' ' && *e != ';')
6331 int len = e - this_arg;
6338 while (*q != ' ' && *q != ';')
6345 if (! strncmp (arg, this_arg, (len < q - arg) ? q - arg : len) ||
6346 default_arg (this_arg, e - this_arg))
6376 /* If this is a duplicate, skip it. */
6377 skip = (last_path != 0 && (unsigned int) (p - this_path) == last_path_len
6378 && ! strncmp (last_path, this_path, last_path_len));
6380 last_path = this_path;
6381 last_path_len = p - this_path;
6384 /* If this directory requires any default arguments, we can skip
6385 it. We will already have printed a directory identical to
6386 this one which does not require that default argument. */
6404 while (*q != ' ' && *q != ';')
6412 && default_arg (arg, q - arg))
6427 for (p1 = last_path; p1 < p; p1++)
6446 use_arg = *p != '!';
6451 while (*p != ' ' && *p != ';')
6466 /* If there are extra options, print them now. */
6467 if (multilib_extra && *multilib_extra)
6469 int print_at = TRUE;
6472 for (q = multilib_extra; *q != '\0'; q++)