1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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". */
35 /* A Short Introduction to Adding a Command-Line Option.
37 Before adding a command-line option, consider if it is really
38 necessary. Each additional command-line option adds complexity and
39 is difficult to remove in subsequent versions.
41 In the following, consider adding the command-line argument
44 1. Each command-line option is specified in the specs file. The
45 notation is described below in the comment entitled "The Specs
48 2. In this file, add an entry to "option_map" equating the long
49 `--' argument version and any shorter, single letter version. Read
50 the comments in the declaration of "struct option_map" for an
51 explanation. Do not omit the first `-'.
53 3. Look in the "specs" file to determine which program or option
54 list should be given the argument, e.g., "cc1_options". Add the
55 appropriate syntax for the shorter option version to the
56 corresponding "const char *" entry in this file. Omit the first
57 `-' from the option. For example, use `-bar', rather than `--bar'.
59 4. If the argument takes an argument, e.g., `--baz argument1',
60 modify either DEFAULT_SWITCH_TAKES_ARG or
61 DEFAULT_WORD_SWITCH_TAKES_ARG in this file. Omit the first `-'
64 5. Document the option in this file's display_help(). If the
65 option is passed to a subprogram, modify its corresponding
66 function, e.g., cppinit.c:print_help() or toplev.c:display_help(),
69 6. Compile and test. Make sure that your new specs file is being
70 read. For example, use a debugger to investigate the value of
71 "specs_file" in main(). */
76 #if ! defined( SIGCHLD ) && defined( SIGCLD )
77 # define SIGCHLD SIGCLD
85 #ifdef HAVE_SYS_RESOURCE_H
86 #include <sys/resource.h>
88 #if defined (HAVE_DECL_GETRUSAGE) && !HAVE_DECL_GETRUSAGE
89 extern int getrusage PARAMS ((int, struct rusage *));
92 /* By default there is no special suffix for target executables. */
93 /* FIXME: when autoconf is fixed, remove the host check - dj */
94 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
95 #define HAVE_TARGET_EXECUTABLE_SUFFIX
97 #undef TARGET_EXECUTABLE_SUFFIX
98 #define TARGET_EXECUTABLE_SUFFIX ""
101 /* By default there is no special suffix for host executables. */
102 #ifdef HOST_EXECUTABLE_SUFFIX
103 #define HAVE_HOST_EXECUTABLE_SUFFIX
105 #define HOST_EXECUTABLE_SUFFIX ""
108 /* By default, the suffix for target object files is ".o". */
109 #ifdef TARGET_OBJECT_SUFFIX
110 #define HAVE_TARGET_OBJECT_SUFFIX
112 #define TARGET_OBJECT_SUFFIX ".o"
116 /* FIXME: the location independence code for VMS is hairier than this,
117 and hasn't been written. */
123 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
125 #define obstack_chunk_alloc xmalloc
126 #define obstack_chunk_free free
128 #ifndef GET_ENV_PATH_LIST
129 #define GET_ENV_PATH_LIST(VAR,NAME) do { (VAR) = getenv (NAME); } while (0)
132 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
133 #ifndef LIBRARY_PATH_ENV
134 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
138 #define kill(p,s) raise(s)
141 /* If a stage of compilation returns an exit status >= 1,
142 compilation of that file ceases. */
144 #define MIN_FATAL_STATUS 1
146 /* Flag set by cppspec.c to 1. */
149 /* Flag saying to pass the greatest exit code returned by a sub-process
150 to the calling program. */
151 static int pass_exit_codes;
153 /* Definition of string containing the arguments given to configure. */
154 #include "configargs.h"
156 /* Flag saying to print the directories gcc will search through looking for
157 programs, libraries, etc. */
159 static int print_search_dirs;
161 /* Flag saying to print the full filename of this file
162 as found through our usual search mechanism. */
164 static const char *print_file_name = NULL;
166 /* As print_file_name, but search for executable file. */
168 static const char *print_prog_name = NULL;
170 /* Flag saying to print the relative path we'd use to
171 find libgcc.a given the current compiler flags. */
173 static int print_multi_directory;
175 /* Flag saying to print the list of subdirectories and
176 compiler flags used to select them in a standard form. */
178 static int print_multi_lib;
180 /* Flag saying to print the command line options understood by gcc and its
183 static int print_help_list;
185 /* Flag indicating whether we should print the command and arguments */
187 static int verbose_flag;
189 /* Flag indicating whether we should ONLY print the command and
190 arguments (like verbose_flag) without executing the command.
191 Displayed arguments are quoted so that the generated command
192 line is suitable for execution. This is intended for use in
193 shell scripts to capture the driver-generated command line. */
194 static int verbose_only_flag;
196 /* Flag indicating to print target specific command line options. */
198 static int target_help_flag;
200 /* Flag indicating whether we should report subprocess execution times
201 (if this is supported by the system - see pexecute.c). */
203 static int report_times;
205 /* Nonzero means write "temp" files in source directory
206 and use the source file's name in them, and don't delete them. */
208 static int save_temps_flag;
210 /* The compiler version. */
212 static const char *compiler_version;
214 /* The target version specified with -V */
216 static const char *spec_version = DEFAULT_TARGET_VERSION;
218 /* The target machine specified with -b. */
220 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
222 /* Nonzero if cross-compiling.
223 When -b is used, the value comes from the `specs' file. */
226 static const char *cross_compile = "1";
228 static const char *cross_compile = "0";
231 #ifdef MODIFY_TARGET_NAME
233 /* Information on how to alter the target name based on a command-line
234 switch. The only case we support now is simply appending or deleting a
235 string to or from the end of the first part of the configuration name. */
237 static const struct modify_target
239 const char *const sw;
240 const enum add_del {ADD, DELETE} add_del;
241 const char *const str;
243 modify_target[] = MODIFY_TARGET_NAME;
246 /* The number of errors that have occurred; the link phase will not be
247 run if this is non-zero. */
248 static int error_count = 0;
250 /* Greatest exit code of sub-processes that has been encountered up to
252 static int greatest_status = 1;
254 /* This is the obstack which we use to allocate many strings. */
256 static struct obstack obstack;
258 /* This is the obstack to build an environment variable to pass to
259 collect2 that describes all of the relevant switches of what to
260 pass the compiler in building the list of pointers to constructors
263 static struct obstack collect_obstack;
265 /* These structs are used to collect resource usage information for
267 #ifdef HAVE_GETRUSAGE
268 static struct rusage rus, prus;
271 /* Forward declaration for prototypes. */
274 static void init_spec PARAMS ((void));
276 static char **split_directories PARAMS ((const char *, int *));
277 static void free_split_directories PARAMS ((char **));
278 static char *make_relative_prefix PARAMS ((const char *, const char *, const char *));
280 static void store_arg PARAMS ((const char *, int, int));
281 static char *load_specs PARAMS ((const char *));
282 static void read_specs PARAMS ((const char *, int));
283 static void set_spec PARAMS ((const char *, const char *));
284 static struct compiler *lookup_compiler PARAMS ((const char *, size_t, const char *));
285 static char *build_search_list PARAMS ((struct path_prefix *, const char *, int));
286 static void putenv_from_prefixes PARAMS ((struct path_prefix *, const char *));
287 static int access_check PARAMS ((const char *, int));
288 static char *find_a_file PARAMS ((struct path_prefix *, const char *, int));
289 static void add_prefix PARAMS ((struct path_prefix *, const char *,
290 const char *, int, int, int *));
291 static void translate_options PARAMS ((int *, const char *const **));
292 static char *skip_whitespace PARAMS ((char *));
293 static void delete_if_ordinary PARAMS ((const char *));
294 static void delete_temp_files PARAMS ((void));
295 static void delete_failure_queue PARAMS ((void));
296 static void clear_failure_queue PARAMS ((void));
297 static int check_live_switch PARAMS ((int, int));
298 static const char *handle_braces PARAMS ((const char *));
299 static char *save_string PARAMS ((const char *, int));
300 static void set_collect_gcc_options PARAMS ((void));
301 static int do_spec_1 PARAMS ((const char *, int, const char *));
302 static const char *find_file PARAMS ((const char *));
303 static int is_directory PARAMS ((const char *, const char *, int));
304 static void validate_switches PARAMS ((const char *));
305 static void validate_all_switches PARAMS ((void));
306 static void give_switch PARAMS ((int, int, int));
307 static int used_arg PARAMS ((const char *, int));
308 static int default_arg PARAMS ((const char *, int));
309 static void set_multilib_dir PARAMS ((void));
310 static void print_multilib_info PARAMS ((void));
311 static void perror_with_name PARAMS ((const char *));
312 static void pfatal_pexecute PARAMS ((const char *, const char *))
314 static void notice PARAMS ((const char *, ...))
316 static void display_help PARAMS ((void));
317 static void add_preprocessor_option PARAMS ((const char *, int));
318 static void add_assembler_option PARAMS ((const char *, int));
319 static void add_linker_option PARAMS ((const char *, int));
320 static void process_command PARAMS ((int, const char *const *));
321 static int execute PARAMS ((void));
322 static void clear_args PARAMS ((void));
323 static void fatal_error PARAMS ((int));
324 #ifdef ENABLE_SHARED_LIBGCC
325 static void init_gcc_specs PARAMS ((struct obstack *,
326 const char *, const char *,
329 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
330 static const char *convert_filename PARAMS ((const char *, int, int));
333 /* The Specs Language
335 Specs are strings containing lines, each of which (if not blank)
336 is made up of a program name, and arguments separated by spaces.
337 The program name must be exact and start from root, since no path
338 is searched and it is unreliable to depend on the current working directory.
339 Redirection of input or output is not supported; the subprograms must
340 accept filenames saying what files to read and write.
342 In addition, the specs can contain %-sequences to substitute variable text
343 or for conditional text. Here is a table of all defined %-sequences.
344 Note that spaces are not generated automatically around the results of
345 expanding these sequences; therefore, you can concatenate them together
346 or with constant text in a single argument.
348 %% substitute one % into the program name or argument.
349 %i substitute the name of the input file being processed.
350 %b substitute the basename of the input file being processed.
351 This is the substring up to (and not including) the last period
352 and not including the directory.
353 %B same as %b, but include the file suffix (text after the last period).
355 substitute a file name that has suffix SUFFIX and is chosen
356 once per compilation, and mark the argument a la %d. To reduce
357 exposure to denial-of-service attacks, the file name is now
358 chosen in a way that is hard to predict even when previously
359 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
360 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
361 the regexp "[.A-Za-z]*%O"; "%O" is treated exactly as if it
362 had been pre-processed. Previously, %g was simply substituted
363 with a file name chosen once per compilation, without regard
364 to any appended suffix (which was therefore treated just like
365 ordinary text), making such attacks more likely to succeed.
367 like %g, but generates a new temporary file name even if %uSUFFIX
370 substitutes the last file name generated with %uSUFFIX, generating a
371 new one if there is no such last file name. In the absence of any
372 %uSUFFIX, this is just like %gSUFFIX, except they don't share
373 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
374 would involve the generation of two distinct file names, one
375 for each `%g.s' and another for each `%U.s'. Previously, %U was
376 simply substituted with a file name chosen for the previous %u,
377 without regard to any appended suffix.
379 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
380 writable, and if save-temps is off; otherwise, substitute the name
381 of a temporary file, just like %u. This temporary file is not
382 meant for communication between processes, but rather as a junk
385 substitutes .SUFFIX for the suffixes of a matched switch's args when
386 it is subsequently output with %*. SUFFIX is terminated by the next
388 %d marks the argument containing or following the %d as a
389 temporary file name, so that that file will be deleted if CC exits
390 successfully. Unlike %g, this contributes no text to the argument.
391 %w marks the argument containing or following the %w as the
392 "output file" of this compilation. This puts the argument
393 into the sequence of arguments that %o will substitute later.
395 like %{...} but mark last argument supplied within
396 as a file to be deleted on failure.
397 %o substitutes the names of all the output files, with spaces
398 automatically placed around them. You should write spaces
399 around the %o as well or the results are undefined.
400 %o is for use in the specs for running the linker.
401 Input files whose names have no recognized suffix are not compiled
402 at all, but they are included among the output files, so they will
404 %O substitutes the suffix for object files. Note that this is
405 handled specially when it immediately follows %g, %u, or %U
406 (with or without a suffix argument) because of the need for
407 those to form complete file names. The handling is such that
408 %O is treated exactly as if it had already been substituted,
409 except that %g, %u, and %U do not currently support additional
410 SUFFIX characters following %O as they would following, for
412 %p substitutes the standard macro predefinitions for the
413 current target machine. Use this when running cpp.
414 %P like %p, but puts `__' before and after the name of each macro.
415 (Except macros that already have __.)
417 %I Substitute a -iprefix option made from GCC_EXEC_PREFIX.
418 %s current argument is the name of a library or startup file of some sort.
419 Search for that file in a standard list of directories
420 and substitute the full name found.
421 %eSTR Print STR as an error message. STR is terminated by a newline.
422 Use this when inconsistent options are detected.
423 %nSTR Print STR as an notice. STR is terminated by a newline.
424 %x{OPTION} Accumulate an option for %X.
425 %X Output the accumulated linker options specified by compilations.
426 %Y Output the accumulated assembler options specified by compilations.
427 %Z Output the accumulated preprocessor options specified by compilations.
428 %v1 Substitute the major version number of GCC.
429 (For version 2.5.3, this is 2.)
430 %v2 Substitute the minor version number of GCC.
431 (For version 2.5.3, this is 5.)
432 %v3 Substitute the patch level number of GCC.
433 (For version 2.5.3, this is 3.)
434 %a process ASM_SPEC as a spec.
435 This allows config.h to specify part of the spec for running as.
436 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
437 used here. This can be used to run a post-processor after the
438 assembler has done its job.
439 %D Dump out a -L option for each directory in startfile_prefixes.
440 If multilib_dir is set, extra entries are generated with it affixed.
441 %l process LINK_SPEC as a spec.
442 %L process LIB_SPEC as a spec.
443 %G process LIBGCC_SPEC as a spec.
444 %M output multilib_dir with directory separators replaced with "_";
445 if multilib_dir is not set or is ".", output "".
446 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
447 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
448 %C process CPP_SPEC as a spec.
449 %1 process CC1_SPEC as a spec.
450 %2 process CC1PLUS_SPEC as a spec.
451 %| output "-" if the input for the current command is coming from a pipe.
452 %* substitute the variable part of a matched option. (See below.)
453 Note that each comma in the substituted string is replaced by
455 %{S} substitutes the -S switch, if that switch was given to CC.
456 If that switch was not specified, this substitutes nothing.
457 Here S is a metasyntactic variable.
458 %{S*} substitutes all the switches specified to CC whose names start
459 with -S. This is used for -o, -I, etc; switches that take
460 arguments. CC considers `-o foo' as being one switch whose
461 name starts with `o'. %{o*} would substitute this text,
462 including the space; thus, two arguments would be generated.
463 %{^S*} likewise, but don't put a blank between a switch and any args.
464 %{S*&T*} likewise, but preserve order of S and T options (the order
465 of S and T in the spec is not significant). Can be any number
466 of ampersand-separated variables; for each the wild card is
467 optional. Useful for CPP as %{D*&U*&A*}.
468 %{S*:X} substitutes X if one or more switches whose names start with -S are
469 specified to CC. Note that the tail part of the -S option
470 (i.e. the part matched by the `*') will be substituted for each
471 occurrence of %* within X.
472 %{<S} remove all occurrences of -S from the command line.
473 Note - this option is position dependent. % commands in the
474 spec string before this option will see -S, % commands in the
475 spec string after this option will not.
476 %{S:X} substitutes X, but only if the -S switch was given to CC.
477 %{!S:X} substitutes X, but only if the -S switch was NOT given to CC.
478 %{|S:X} like %{S:X}, but if no S switch, substitute `-'.
479 %{|!S:X} like %{!S:X}, but if there is an S switch, substitute `-'.
480 %{.S:X} substitutes X, but only if processing a file with suffix S.
481 %{!.S:X} substitutes X, but only if NOT processing a file with suffix S.
482 %{S|P:X} substitutes X if either -S or -P was given to CC. This may be
483 combined with ! and . as above binding stronger than the OR.
484 %(Spec) processes a specification defined in a specs file as *Spec:
485 %[Spec] as above, but put __ around -D arguments
487 The conditional text X in a %{S:X} or %{!S:X} construct may contain
488 other nested % constructs or spaces, or even newlines. They are
489 processed as usual, as described above.
491 The -O, -f, -m, and -W switches are handled specifically in these
492 constructs. If another value of -O or the negated form of a -f, -m, or
493 -W switch is found later in the command line, the earlier switch
494 value is ignored, except with {S*} where S is just one letter; this
495 passes all matching options.
497 The character | at the beginning of the predicate text is used to indicate
498 that a command should be piped to the following command, but only if -pipe
501 Note that it is built into CC which switches take arguments and which
502 do not. You might think it would be useful to generalize this to
503 allow each compiler's spec to say which switches take arguments. But
504 this cannot be done in a consistent fashion. CC cannot even decide
505 which input files have been specified without knowing which switches
506 take arguments, and it must know which input files to compile in order
507 to tell which compilers to run.
509 CC also knows implicitly that arguments starting in `-l' are to be
510 treated as compiler output files, and passed to the linker in their
511 proper position among the other output files. */
513 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
515 /* config.h can define ASM_SPEC to provide extra args to the assembler
516 or extra switch-translations. */
521 /* config.h can define ASM_FINAL_SPEC to run a post processor after
522 the assembler has run. */
523 #ifndef ASM_FINAL_SPEC
524 #define ASM_FINAL_SPEC ""
527 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
528 or extra switch-translations. */
533 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
534 or extra switch-translations. */
539 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
540 or extra switch-translations. */
542 #define CC1PLUS_SPEC ""
545 /* config.h can define LINK_SPEC to provide extra args to the linker
546 or extra switch-translations. */
551 /* config.h can define LIB_SPEC to override the default libraries. */
553 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
556 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
559 #if defined(LINK_LIBGCC_SPECIAL) || defined(LINK_LIBGCC_SPECIAL_1)
560 /* Have gcc do the search for libgcc.a. */
561 #define LIBGCC_SPEC "libgcc.a%s"
563 #define LIBGCC_SPEC "-lgcc"
567 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
568 #ifndef STARTFILE_SPEC
569 #define STARTFILE_SPEC \
570 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
573 /* config.h can define SWITCHES_NEED_SPACES to control which options
574 require spaces between the option and the argument. */
575 #ifndef SWITCHES_NEED_SPACES
576 #define SWITCHES_NEED_SPACES ""
579 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
581 #define ENDFILE_SPEC ""
585 #define LINKER_NAME "collect2"
588 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
590 #ifndef ASM_DEBUG_SPEC
591 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
592 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
593 # define ASM_DEBUG_SPEC \
594 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
595 ? "%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}" \
596 : "%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}")
598 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
599 # define ASM_DEBUG_SPEC "%{g*:--gstabs}"
601 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
602 # define ASM_DEBUG_SPEC "%{g*:--gdwarf2}"
606 #ifndef ASM_DEBUG_SPEC
607 # define ASM_DEBUG_SPEC ""
610 /* Here is the spec for running the linker, after compiling all files. */
612 /* -u* was put back because both BSD and SysV seem to support it. */
613 /* %{static:} simply prevents an error message if the target machine
614 doesn't handle -static. */
615 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
616 scripts which exist in user specified directories, or in standard
618 #ifndef LINK_COMMAND_SPEC
619 #define LINK_COMMAND_SPEC "\
620 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
621 %(linker) %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r} %{s} %{t}\
622 %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
623 %{static:} %{L*} %(link_libgcc) %o %{!nostdlib:%{!nodefaultlibs:%G %L %G}}\
624 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
627 #ifndef LINK_LIBGCC_SPEC
628 # ifdef LINK_LIBGCC_SPECIAL
629 /* Don't generate -L options for startfile prefix list. */
630 # define LINK_LIBGCC_SPEC ""
632 /* Do generate them. */
633 # define LINK_LIBGCC_SPEC "%D"
637 static const char *asm_debug = ASM_DEBUG_SPEC;
638 static const char *cpp_spec = CPP_SPEC;
639 static const char *cpp_predefines = CPP_PREDEFINES;
640 static const char *cc1_spec = CC1_SPEC;
641 static const char *cc1plus_spec = CC1PLUS_SPEC;
642 static const char *asm_spec = ASM_SPEC;
643 static const char *asm_final_spec = ASM_FINAL_SPEC;
644 static const char *link_spec = LINK_SPEC;
645 static const char *lib_spec = LIB_SPEC;
646 static const char *libgcc_spec = LIBGCC_SPEC;
647 static const char *endfile_spec = ENDFILE_SPEC;
648 static const char *startfile_spec = STARTFILE_SPEC;
649 static const char *switches_need_spaces = SWITCHES_NEED_SPACES;
650 static const char *linker_name_spec = LINKER_NAME;
651 static const char *link_command_spec = LINK_COMMAND_SPEC;
652 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
654 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
655 There should be no need to override these in target dependent files,
656 but we need to copy them to the specs file so that newer versions
657 of the GCC driver can correctly drive older tool chains with the
658 appropriate -B options. */
660 static const char *trad_capable_cpp =
661 "%{traditional|ftraditional|traditional-cpp:trad}cpp0";
663 static const char *cpp_unique_options =
664 "%{C:%{!E:%eGNU C does not support -C without using -E}}\
665 %{nostdinc*} %{C} %{v} %{I*} %{P} %{$} %I\
666 %{MD:-M -MF %W{!o: %b.d}%W{o*:%.d%*}}\
667 %{MMD:-MM -MF %W{!o: %b.d}%W{o*:%.d%*}}\
668 %{M} %{MM} %W{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
669 %{!E:%{!M:%{!MM:%{MD|MMD:%{o*:-MQ %*}}}}}\
670 %{!no-gcc:-D__GNUC__=%v1 -D__GNUC_MINOR__=%v2 -D__GNUC_PATCHLEVEL__=%v3}\
671 %{!undef:%{!ansi:%{!std=*:%p}%{std=gnu*:%p}} %P} %{trigraphs}\
672 %{Os:-D__OPTIMIZE_SIZE__} %{O*:%{!O0:-D__OPTIMIZE__}}\
673 %{fno-inline|O0|!O*:-D__NO_INLINE__} %{ffast-math:-D__FAST_MATH__}\
674 %{fshort-wchar:-U__WCHAR_TYPE__ -D__WCHAR_TYPE__=short\\ unsigned\\ int}\
675 %{ffreestanding:-D__STDC_HOSTED__=0} %{fno-hosted:-D__STDC_HOSTED__=0}\
676 %{!ffreestanding:%{!fno-hosted:-D__STDC_HOSTED__=1}} %{remap}\
677 %{g3:-dD} %{H} %C %{D*&U*&A*} %{i*} %Z %i\
680 /* This contains cpp options which are common with cc1_options and are passed
681 only when preprocessing only to avoid duplication. */
682 static const char *cpp_options =
683 "%(cpp_unique_options) %{std*} %{d*} %{W*} %{w} %{pedantic*}\
684 %{fshow-column} %{fno-show-column}\
685 %{fsigned-char&funsigned-char}\
686 %{fleading-underscore} %{fno-leading-underscore}\
687 %{fno-operator-names} %{ftabstop=*}";
689 /* NB: This is shared amongst all front-ends. */
690 static const char *cc1_options =
691 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
692 %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\
693 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{std*} %{ansi}\
694 %{v:-version} %{pg:-p} %{p} %{f*}\
695 %{Qn:-fno-ident} %{--help:--help}\
696 %{--target-help:--target-help}\
697 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
698 %{fsyntax-only:-o %j} %{-param*}";
700 static const char *asm_options =
701 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
703 static const char *invoke_as =
704 "%{!S:-o %{|!pipe:%g.s} |\n as %(asm_options) %{!pipe:%g.s} %A }";
706 /* Some compilers have limits on line lengths, and the multilib_select
707 and/or multilib_matches strings can be very long, so we build them at
709 static struct obstack multilib_obstack;
710 static const char *multilib_select;
711 static const char *multilib_matches;
712 static const char *multilib_defaults;
713 static const char *multilib_exclusions;
714 #include "multilib.h"
716 /* Check whether a particular argument is a default argument. */
718 #ifndef MULTILIB_DEFAULTS
719 #define MULTILIB_DEFAULTS { "" }
722 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
726 struct user_specs *next;
727 const char *filename;
730 static struct user_specs *user_specs_head, *user_specs_tail;
732 /* This defines which switch letters take arguments. */
734 #define DEFAULT_SWITCH_TAKES_ARG(CHAR) \
735 ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o' \
736 || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u' \
737 || (CHAR) == 'I' || (CHAR) == 'm' || (CHAR) == 'x' \
738 || (CHAR) == 'L' || (CHAR) == 'A' || (CHAR) == 'V' \
739 || (CHAR) == 'B' || (CHAR) == 'b')
741 #ifndef SWITCH_TAKES_ARG
742 #define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR)
745 /* This defines which multi-letter switches take arguments. */
747 #define DEFAULT_WORD_SWITCH_TAKES_ARG(STR) \
748 (!strcmp (STR, "Tdata") || !strcmp (STR, "Ttext") \
749 || !strcmp (STR, "Tbss") || !strcmp (STR, "include") \
750 || !strcmp (STR, "imacros") || !strcmp (STR, "aux-info") \
751 || !strcmp (STR, "idirafter") || !strcmp (STR, "iprefix") \
752 || !strcmp (STR, "iwithprefix") || !strcmp (STR, "iwithprefixbefore") \
753 || !strcmp (STR, "isystem") || !strcmp (STR, "-param") \
754 || !strcmp (STR, "specs") \
755 || !strcmp (STR, "MF") || !strcmp (STR, "MT") || !strcmp (STR, "MQ"))
757 #ifndef WORD_SWITCH_TAKES_ARG
758 #define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
761 #ifdef HAVE_TARGET_EXECUTABLE_SUFFIX
762 /* This defines which switches stop a full compilation. */
763 #define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \
764 ((CHAR) == 'c' || (CHAR) == 'S')
766 #ifndef SWITCH_CURTAILS_COMPILATION
767 #define SWITCH_CURTAILS_COMPILATION(CHAR) \
768 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR)
772 /* Record the mapping from file suffixes for compilation specs. */
776 const char *suffix; /* Use this compiler for input files
777 whose names end in this suffix. */
779 const char *spec; /* To use this compiler, run this spec. */
781 const char *cpp_spec; /* If non-NULL, substitute this spec
782 for `%C', rather than the usual
786 /* Pointer to a vector of `struct compiler' that gives the spec for
787 compiling a file, based on its suffix.
788 A file that does not end in any of these suffixes will be passed
789 unchanged to the loader and nothing else will be done to it.
791 An entry containing two 0s is used to terminate the vector.
793 If multiple entries match a file, the last matching one is used. */
795 static struct compiler *compilers;
797 /* Number of entries in `compilers', not counting the null terminator. */
799 static int n_compilers;
801 /* The default list of file name suffixes and their compilation specs. */
803 static const struct compiler default_compilers[] =
805 /* Add lists of suffixes of known languages here. If those languages
806 were not present when we built the driver, we will hit these copies
807 and be given a more meaningful error than "file not used since
808 linking is not done". */
809 {".m", "#Objective-C", 0}, {".mi", "#Objective-C", 0},
810 {".cc", "#C++", 0}, {".cxx", "#C++", 0}, {".cpp", "#C++", 0},
811 {".cp", "#C++", 0}, {".c++", "#C++", 0}, {".C", "#C++", 0},
813 {".ads", "#Ada", 0}, {".adb", "#Ada", 0},
814 {".f", "#Fortran", 0}, {".for", "#Fortran", 0}, {".fpp", "#Fortran", 0},
815 {".F", "#Fortran", 0}, {".FOR", "#Fortran", 0}, {".FPP", "#Fortran", 0},
816 {".r", "#Ratfor", 0},
817 {".p", "#Pascal", 0}, {".pas", "#Pascal", 0},
818 {".ch", "#Chill", 0}, {".chi", "#Chill", 0},
819 {".java", "#Java", 0}, {".class", "#Java", 0},
820 {".zip", "#Java", 0}, {".jar", "#Java", 0},
821 /* Next come the entries for C. */
824 /* cc1 has an integrated ISO C preprocessor. We should invoke the
825 external preprocessor if -save-temps is given. */
826 "%{E|M|MM:%(trad_capable_cpp) -lang-c %{ansi:-std=c89} %(cpp_options)}\
828 %{traditional|ftraditional:\
829 %eGNU C no longer supports -traditional without -E}\
830 %{save-temps|traditional-cpp:%(trad_capable_cpp) \
831 -lang-c %{ansi:-std=c89} %(cpp_options) %b.i \n\
832 cc1 -fpreprocessed %b.i %(cc1_options)}\
833 %{!save-temps:%{!traditional-cpp:\
834 cc1 -lang-c %{ansi:-std=c89} %(cpp_unique_options) %(cc1_options)}}\
835 %{!fsyntax-only:%(invoke_as)}}}}", 0},
837 "%{!E:%e-E required when input is from standard input}\
838 %(trad_capable_cpp) -lang-c %{ansi:-std=c89} %(cpp_options)", 0},
839 {".h", "@c-header", 0},
841 "%{!E:%ecompilation of header file requested} \
842 %(trad_capable_cpp) -lang-c %{ansi:-std=c89} %(cpp_options)", 0},
843 {".i", "@cpp-output", 0},
845 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0},
846 {".s", "@assembler", 0},
848 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0},
849 {".S", "@assembler-with-cpp", 0},
850 {"@assembler-with-cpp",
851 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
852 %{!M:%{!MM:%{!E:%{!S:-o %{|!pipe:%g.s} |\n\
853 as %(asm_debug) %(asm_options) %{!pipe:%g.s} %A }}}}", 0},
855 /* Mark end of table */
859 /* Number of elements in default_compilers, not counting the terminator. */
861 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
863 /* A vector of options to give to the linker.
864 These options are accumulated by %x,
865 and substituted into the linker command with %X. */
866 static int n_linker_options;
867 static char **linker_options;
869 /* A vector of options to give to the assembler.
870 These options are accumulated by -Wa,
871 and substituted into the assembler command with %Y. */
872 static int n_assembler_options;
873 static char **assembler_options;
875 /* A vector of options to give to the preprocessor.
876 These options are accumulated by -Wp,
877 and substituted into the preprocessor command with %Z. */
878 static int n_preprocessor_options;
879 static char **preprocessor_options;
881 /* Define how to map long options into short ones. */
883 /* This structure describes one mapping. */
886 /* The long option's name. */
887 const char *const name;
888 /* The equivalent short option. */
889 const char *const equivalent;
890 /* Argument info. A string of flag chars; NULL equals no options.
891 a => argument required.
892 o => argument optional.
893 j => join argument to equivalent, making one word.
894 * => require other text after NAME as an argument. */
895 const char *const arg_info;
898 /* This is the table of mappings. Mappings are tried sequentially
899 for each option encountered; the first one that matches, wins. */
901 static const struct option_map option_map[] =
903 {"--all-warnings", "-Wall", 0},
904 {"--ansi", "-ansi", 0},
905 {"--assemble", "-S", 0},
906 {"--assert", "-A", "a"},
907 {"--classpath", "-fclasspath=", "aj"},
908 {"--bootclasspath", "-fbootclasspath=", "aj"},
909 {"--CLASSPATH", "-fclasspath=", "aj"},
910 {"--comments", "-C", 0},
911 {"--compile", "-c", 0},
912 {"--debug", "-g", "oj"},
913 {"--define-macro", "-D", "aj"},
914 {"--dependencies", "-M", 0},
915 {"--dump", "-d", "a"},
916 {"--dumpbase", "-dumpbase", "a"},
917 {"--entry", "-e", 0},
918 {"--extra-warnings", "-W", 0},
919 {"--for-assembler", "-Wa", "a"},
920 {"--for-linker", "-Xlinker", "a"},
921 {"--force-link", "-u", "a"},
922 {"--imacros", "-imacros", "a"},
923 {"--include", "-include", "a"},
924 {"--include-barrier", "-I-", 0},
925 {"--include-directory", "-I", "aj"},
926 {"--include-directory-after", "-idirafter", "a"},
927 {"--include-prefix", "-iprefix", "a"},
928 {"--include-with-prefix", "-iwithprefix", "a"},
929 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
930 {"--include-with-prefix-after", "-iwithprefix", "a"},
931 {"--language", "-x", "a"},
932 {"--library-directory", "-L", "a"},
933 {"--machine", "-m", "aj"},
934 {"--machine-", "-m", "*j"},
935 {"--no-line-commands", "-P", 0},
936 {"--no-precompiled-includes", "-noprecomp", 0},
937 {"--no-standard-includes", "-nostdinc", 0},
938 {"--no-standard-libraries", "-nostdlib", 0},
939 {"--no-warnings", "-w", 0},
940 {"--optimize", "-O", "oj"},
941 {"--output", "-o", "a"},
942 {"--output-class-directory", "-foutput-class-dir=", "ja"},
943 {"--param", "--param", "a"},
944 {"--pedantic", "-pedantic", 0},
945 {"--pedantic-errors", "-pedantic-errors", 0},
946 {"--pipe", "-pipe", 0},
947 {"--prefix", "-B", "a"},
948 {"--preprocess", "-E", 0},
949 {"--print-search-dirs", "-print-search-dirs", 0},
950 {"--print-file-name", "-print-file-name=", "aj"},
951 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
952 {"--print-missing-file-dependencies", "-MG", 0},
953 {"--print-multi-lib", "-print-multi-lib", 0},
954 {"--print-multi-directory", "-print-multi-directory", 0},
955 {"--print-prog-name", "-print-prog-name=", "aj"},
956 {"--profile", "-p", 0},
957 {"--profile-blocks", "-a", 0},
958 {"--quiet", "-q", 0},
959 {"--save-temps", "-save-temps", 0},
960 {"--shared", "-shared", 0},
961 {"--silent", "-q", 0},
962 {"--specs", "-specs=", "aj"},
963 {"--static", "-static", 0},
964 {"--std", "-std=", "aj"},
965 {"--symbolic", "-symbolic", 0},
966 {"--target", "-b", "a"},
967 {"--time", "-time", 0},
968 {"--trace-includes", "-H", 0},
969 {"--traditional", "-traditional", 0},
970 {"--traditional-cpp", "-traditional-cpp", 0},
971 {"--trigraphs", "-trigraphs", 0},
972 {"--undefine-macro", "-U", "aj"},
973 {"--use-version", "-V", "a"},
974 {"--user-dependencies", "-MM", 0},
975 {"--verbose", "-v", 0},
976 {"--warn-", "-W", "*j"},
977 {"--write-dependencies", "-MD", 0},
978 {"--write-user-dependencies", "-MMD", 0},
983 #ifdef TARGET_OPTION_TRANSLATE_TABLE
984 static const struct {
985 const char *const option_found;
986 const char *const replacements;
987 } target_option_translations[] =
989 TARGET_OPTION_TRANSLATE_TABLE,
994 /* Translate the options described by *ARGCP and *ARGVP.
995 Make a new vector and store it back in *ARGVP,
996 and store its length in *ARGVC. */
999 translate_options (argcp, argvp)
1001 const char *const **argvp;
1005 const char *const *argv = *argvp;
1006 int newvsize = (argc + 2) * 2 * sizeof (const char *);
1008 (const char **) xmalloc (newvsize);
1012 newv[newindex++] = argv[i++];
1016 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1020 target_option_translations[tott_idx].option_found;
1023 if (strcmp (target_option_translations[tott_idx].option_found,
1030 for (sp = target_option_translations[tott_idx].replacements;
1037 newvsize += spaces * sizeof (const char *);
1038 newv = (const char **) xrealloc (newv, newvsize);
1040 sp = target_option_translations[tott_idx].replacements;
1049 newv[newindex++] = np;
1050 while (*np != ' ' && *np)
1061 if (target_option_translations[tott_idx].option_found)
1065 /* Translate -- options. */
1066 if (argv[i][0] == '-' && argv[i][1] == '-')
1069 /* Find a mapping that applies to this option. */
1070 for (j = 0; j < ARRAY_SIZE (option_map); j++)
1072 size_t optlen = strlen (option_map[j].name);
1073 size_t arglen = strlen (argv[i]);
1074 size_t complen = arglen > optlen ? optlen : arglen;
1075 const char *arginfo = option_map[j].arg_info;
1080 if (!strncmp (argv[i], option_map[j].name, complen))
1082 const char *arg = 0;
1084 if (arglen < optlen)
1087 for (k = j + 1; k < ARRAY_SIZE (option_map); k++)
1088 if (strlen (option_map[k].name) >= arglen
1089 && !strncmp (argv[i], option_map[k].name, arglen))
1091 error ("ambiguous abbreviation %s", argv[i]);
1095 if (k != ARRAY_SIZE (option_map))
1099 if (arglen > optlen)
1101 /* If the option has an argument, accept that. */
1102 if (argv[i][optlen] == '=')
1103 arg = argv[i] + optlen + 1;
1105 /* If this mapping requires extra text at end of name,
1106 accept that as "argument". */
1107 else if (strchr (arginfo, '*') != 0)
1108 arg = argv[i] + optlen;
1110 /* Otherwise, extra text at end means mismatch.
1111 Try other mappings. */
1116 else if (strchr (arginfo, '*') != 0)
1118 error ("incomplete `%s' option", option_map[j].name);
1122 /* Handle arguments. */
1123 if (strchr (arginfo, 'a') != 0)
1129 error ("missing argument to `%s' option",
1130 option_map[j].name);
1137 else if (strchr (arginfo, '*') != 0)
1139 else if (strchr (arginfo, 'o') == 0)
1142 error ("extraneous argument to `%s' option",
1143 option_map[j].name);
1147 /* Store the translation as one argv elt or as two. */
1148 if (arg != 0 && strchr (arginfo, 'j') != 0)
1149 newv[newindex++] = concat (option_map[j].equivalent, arg,
1153 newv[newindex++] = option_map[j].equivalent;
1154 newv[newindex++] = arg;
1157 newv[newindex++] = option_map[j].equivalent;
1165 /* Handle old-fashioned options--just copy them through,
1166 with their arguments. */
1167 else if (argv[i][0] == '-')
1169 const char *p = argv[i] + 1;
1173 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
1174 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
1175 else if (WORD_SWITCH_TAKES_ARG (p))
1176 nskip += WORD_SWITCH_TAKES_ARG (p);
1177 else if ((c == 'B' || c == 'b' || c == 'V' || c == 'x')
1180 else if (! strcmp (p, "Xlinker"))
1183 /* Watch out for an option at the end of the command line that
1184 is missing arguments, and avoid skipping past the end of the
1186 if (nskip + i > argc)
1191 newv[newindex++] = argv[i++];
1196 /* Ordinary operands, or +e options. */
1197 newv[newindex++] = argv[i++];
1212 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1213 be considered whitespace. */
1214 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1216 else if (*p == '\n' || *p == ' ' || *p == '\t')
1230 /* Structures to keep track of prefixes to try when looking for files. */
1234 const char *prefix; /* String to prepend to the path. */
1235 struct prefix_list *next; /* Next in linked list. */
1236 int require_machine_suffix; /* Don't use without machine_suffix. */
1237 /* 2 means try both machine_suffix and just_machine_suffix. */
1238 int *used_flag_ptr; /* 1 if a file was found with this prefix. */
1239 int priority; /* Sort key - priority within list */
1244 struct prefix_list *plist; /* List of prefixes to try */
1245 int max_len; /* Max length of a prefix in PLIST */
1246 const char *name; /* Name of this list (used in config stuff) */
1249 /* List of prefixes to try when looking for executables. */
1251 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1253 /* List of prefixes to try when looking for startup (crt0) files. */
1255 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1257 /* List of prefixes to try when looking for include files. */
1259 static struct path_prefix include_prefixes = { 0, 0, "include" };
1261 /* Suffix to attach to directories searched for commands.
1262 This looks like `MACHINE/VERSION/'. */
1264 static const char *machine_suffix = 0;
1266 /* Suffix to attach to directories searched for commands.
1267 This is just `MACHINE/'. */
1269 static const char *just_machine_suffix = 0;
1271 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1273 static const char *gcc_exec_prefix;
1275 /* Default prefixes to attach to command names. */
1277 #ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */
1278 #undef MD_EXEC_PREFIX
1279 #undef MD_STARTFILE_PREFIX
1280 #undef MD_STARTFILE_PREFIX_1
1283 /* If no prefixes defined, use the null string, which will disable them. */
1284 #ifndef MD_EXEC_PREFIX
1285 #define MD_EXEC_PREFIX ""
1287 #ifndef MD_STARTFILE_PREFIX
1288 #define MD_STARTFILE_PREFIX ""
1290 #ifndef MD_STARTFILE_PREFIX_1
1291 #define MD_STARTFILE_PREFIX_1 ""
1294 /* Supply defaults for the standard prefixes. */
1296 #ifndef STANDARD_EXEC_PREFIX
1297 #define STANDARD_EXEC_PREFIX "/usr/local/lib/gcc-lib/"
1299 #ifndef STANDARD_STARTFILE_PREFIX
1300 #define STANDARD_STARTFILE_PREFIX "/usr/local/lib/"
1302 #ifndef TOOLDIR_BASE_PREFIX
1303 #define TOOLDIR_BASE_PREFIX "/usr/local/"
1305 #ifndef STANDARD_BINDIR_PREFIX
1306 #define STANDARD_BINDIR_PREFIX "/usr/local/bin"
1309 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1310 static const char *const standard_exec_prefix_1 = "/usr/lib/gcc/";
1311 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1313 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1314 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1315 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1316 static const char *const standard_startfile_prefix_1 = "/lib/";
1317 static const char *const standard_startfile_prefix_2 = "/usr/lib/";
1319 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1320 static const char *tooldir_prefix;
1322 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1324 /* Subdirectory to use for locating libraries. Set by
1325 set_multilib_dir based on the compilation options. */
1327 static const char *multilib_dir;
1329 /* Structure to keep track of the specs that have been defined so far.
1330 These are accessed using %(specname) or %[specname] in a compiler
1335 /* The following 2 fields must be first */
1336 /* to allow EXTRA_SPECS to be initialized */
1337 const char *name; /* name of the spec. */
1338 const char *ptr; /* available ptr if no static pointer */
1340 /* The following fields are not initialized */
1341 /* by EXTRA_SPECS */
1342 const char **ptr_spec; /* pointer to the spec itself. */
1343 struct spec_list *next; /* Next spec in linked list. */
1344 int name_len; /* length of the name */
1345 int alloc_p; /* whether string was allocated */
1348 #define INIT_STATIC_SPEC(NAME,PTR) \
1349 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1351 /* List of statically defined specs. */
1352 static struct spec_list static_specs[] =
1354 INIT_STATIC_SPEC ("asm", &asm_spec),
1355 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1356 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1357 INIT_STATIC_SPEC ("asm_options", &asm_options),
1358 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1359 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1360 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1361 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1362 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1363 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1364 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1365 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1366 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1367 INIT_STATIC_SPEC ("link", &link_spec),
1368 INIT_STATIC_SPEC ("lib", &lib_spec),
1369 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1370 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1371 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces),
1372 INIT_STATIC_SPEC ("predefines", &cpp_predefines),
1373 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1374 INIT_STATIC_SPEC ("version", &compiler_version),
1375 INIT_STATIC_SPEC ("multilib", &multilib_select),
1376 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1377 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1378 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1379 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1380 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1381 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1382 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1383 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1384 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1387 #ifdef EXTRA_SPECS /* additional specs needed */
1388 /* Structure to keep track of just the first two args of a spec_list.
1389 That is all that the EXTRA_SPECS macro gives us. */
1392 const char *const name;
1393 const char *const ptr;
1396 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1397 static struct spec_list *extra_specs = (struct spec_list *) 0;
1400 /* List of dynamically allocates specs that have been defined so far. */
1402 static struct spec_list *specs = (struct spec_list *) 0;
1404 /* Add appropriate libgcc specs to OBSTACK, taking into account
1405 various permutations of -shared-libgcc, -shared, and such. */
1407 #ifdef ENABLE_SHARED_LIBGCC
1409 init_gcc_specs (obstack, shared_name, static_name, eh_name)
1410 struct obstack *obstack;
1411 const char *shared_name;
1412 const char *static_name;
1413 const char *eh_name;
1417 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name,
1418 "}%{!static:%{!static-libgcc:",
1419 "%{!shared:%{!shared-libgcc:", static_name, " ",
1420 eh_name, "}%{shared-libgcc:", shared_name, " ",
1421 static_name, "}}%{shared:",
1423 "%{shared-libgcc:", shared_name,
1424 "}%{!shared-libgcc:", static_name, "}",
1430 obstack_grow (obstack, buf, strlen (buf));
1433 #endif /* ENABLE_SHARED_LIBGCC */
1435 /* Initialize the specs lookup routines. */
1440 struct spec_list *next = (struct spec_list *) 0;
1441 struct spec_list *sl = (struct spec_list *) 0;
1445 return; /* Already initialized. */
1448 notice ("Using built-in specs.\n");
1451 extra_specs = (struct spec_list *)
1452 xcalloc (sizeof (struct spec_list), ARRAY_SIZE (extra_specs_1));
1454 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1456 sl = &extra_specs[i];
1457 sl->name = extra_specs_1[i].name;
1458 sl->ptr = extra_specs_1[i].ptr;
1460 sl->name_len = strlen (sl->name);
1461 sl->ptr_spec = &sl->ptr;
1466 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1468 sl = &static_specs[i];
1473 #ifdef ENABLE_SHARED_LIBGCC
1474 /* ??? If neither -shared-libgcc nor --static-libgcc was
1475 seen, then we should be making an educated guess. Some proposed
1476 heuristics for ELF include:
1478 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1479 program will be doing dynamic loading, which will likely
1480 need the shared libgcc.
1482 (2) If "-ldl", then it's also a fair bet that we're doing
1485 (3) For each ET_DYN we're linking against (either through -lfoo
1486 or /some/path/foo.so), check to see whether it or one of
1487 its dependencies depends on a shared libgcc.
1491 If the runtime is fixed to look for program headers instead
1492 of calling __register_frame_info at all, for each object,
1493 use the shared libgcc if any EH symbol referenced.
1495 If crtstuff is fixed to not invoke __register_frame_info
1496 automatically, for each object, use the shared libgcc if
1497 any non-empty unwind section found.
1499 Doing any of this probably requires invoking an external program to
1500 do the actual object file scanning. */
1502 const char *p = libgcc_spec;
1505 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1506 when given the proper command line arguments. */
1509 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1511 init_gcc_specs (&obstack,
1512 #ifdef NO_SHARED_LIBGCC_MULTILIB
1523 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1525 /* Ug. We don't know shared library extensions. Hope that
1526 systems that use this form don't do shared libraries. */
1527 init_gcc_specs (&obstack,
1528 #ifdef NO_SHARED_LIBGCC_MULTILIB
1541 obstack_1grow (&obstack, *p);
1542 in_sep = (*p == ' ');
1547 obstack_1grow (&obstack, '\0');
1548 libgcc_spec = obstack_finish (&obstack);
1551 #ifdef USE_AS_TRADITIONAL_FORMAT
1552 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1554 static const char tf[] = "--traditional-format ";
1555 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1556 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1557 asm_spec = obstack_finish (&obstack);
1561 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1562 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1563 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1564 link_spec = obstack_finish (&obstack);
1570 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1571 removed; If the spec starts with a + then SPEC is added to the end of the
1575 set_spec (name, spec)
1579 struct spec_list *sl;
1580 const char *old_spec;
1581 int name_len = strlen (name);
1584 /* If this is the first call, initialize the statically allocated specs. */
1587 struct spec_list *next = (struct spec_list *) 0;
1588 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1590 sl = &static_specs[i];
1597 /* See if the spec already exists. */
1598 for (sl = specs; sl; sl = sl->next)
1599 if (name_len == sl->name_len && !strcmp (sl->name, name))
1604 /* Not found - make it. */
1605 sl = (struct spec_list *) xmalloc (sizeof (struct spec_list));
1606 sl->name = xstrdup (name);
1607 sl->name_len = name_len;
1608 sl->ptr_spec = &sl->ptr;
1610 *(sl->ptr_spec) = "";
1615 old_spec = *(sl->ptr_spec);
1616 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1617 ? concat (old_spec, spec + 1, NULL)
1622 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1625 /* Free the old spec. */
1626 if (old_spec && sl->alloc_p)
1627 free ((PTR) old_spec);
1632 /* Accumulate a command (program name and args), and run it. */
1634 /* Vector of pointers to arguments in the current line of specifications. */
1636 static const char **argbuf;
1638 /* Number of elements allocated in argbuf. */
1640 static int argbuf_length;
1642 /* Number of elements in argbuf currently in use (containing args). */
1644 static int argbuf_index;
1646 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1647 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1650 static struct temp_name {
1651 const char *suffix; /* suffix associated with the code. */
1652 int length; /* strlen (suffix). */
1653 int unique; /* Indicates whether %g or %u/%U was used. */
1654 const char *filename; /* associated filename. */
1655 int filename_length; /* strlen (filename). */
1656 struct temp_name *next;
1659 /* Number of commands executed so far. */
1661 static int execution_count;
1663 /* Number of commands that exited with a signal. */
1665 static int signal_count;
1667 /* Name with which this program was invoked. */
1669 static const char *programname;
1671 /* Clear out the vector of arguments (after a command is executed). */
1679 /* Add one argument to the vector at the end.
1680 This is done when a space is seen or at the end of the line.
1681 If DELETE_ALWAYS is nonzero, the arg is a filename
1682 and the file should be deleted eventually.
1683 If DELETE_FAILURE is nonzero, the arg is a filename
1684 and the file should be deleted if this compilation fails. */
1687 store_arg (arg, delete_always, delete_failure)
1689 int delete_always, delete_failure;
1691 if (argbuf_index + 1 == argbuf_length)
1693 = (const char **) xrealloc (argbuf,
1694 (argbuf_length *= 2) * sizeof (const char *));
1696 argbuf[argbuf_index++] = arg;
1697 argbuf[argbuf_index] = 0;
1699 if (delete_always || delete_failure)
1700 record_temp_file (arg, delete_always, delete_failure);
1703 /* Load specs from a file name named FILENAME, replacing occurrences of
1704 various different types of line-endings, \r\n, \n\r and just \r, with
1708 load_specs (filename)
1709 const char *filename;
1713 struct stat statbuf;
1720 notice ("Reading specs from %s\n", filename);
1722 /* Open and stat the file. */
1723 desc = open (filename, O_RDONLY, 0);
1725 pfatal_with_name (filename);
1726 if (stat (filename, &statbuf) < 0)
1727 pfatal_with_name (filename);
1729 /* Read contents of file into BUFFER. */
1730 buffer = xmalloc ((unsigned) statbuf.st_size + 1);
1731 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1733 pfatal_with_name (filename);
1734 buffer[readlen] = 0;
1737 specs = xmalloc (readlen + 1);
1739 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1745 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1747 else if (*(buffer_p + 1) == '\n') /* \r\n */
1761 /* Read compilation specs from a file named FILENAME,
1762 replacing the default ones.
1764 A suffix which starts with `*' is a definition for
1765 one of the machine-specific sub-specs. The "suffix" should be
1766 *asm, *cc1, *cpp, *link, *startfile, etc.
1767 The corresponding spec is stored in asm_spec, etc.,
1768 rather than in the `compilers' vector.
1770 Anything invalid in the file is a fatal error. */
1773 read_specs (filename, main_p)
1774 const char *filename;
1780 buffer = load_specs (filename);
1782 /* Scan BUFFER for specs, putting them in the vector. */
1788 char *in, *out, *p1, *p2, *p3;
1790 /* Advance P in BUFFER to the next nonblank nocomment line. */
1791 p = skip_whitespace (p);
1795 /* Is this a special command that starts with '%'? */
1796 /* Don't allow this for the main specs file, since it would
1797 encourage people to overwrite it. */
1798 if (*p == '%' && !main_p)
1801 while (*p && *p != '\n')
1807 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1808 && (p1[sizeof "%include" - 1] == ' '
1809 || p1[sizeof "%include" - 1] == '\t'))
1813 p1 += sizeof ("%include");
1814 while (*p1 == ' ' || *p1 == '\t')
1817 if (*p1++ != '<' || p[-2] != '>')
1818 fatal ("specs %%include syntax malformed after %ld characters",
1819 (long) (p1 - buffer + 1));
1822 new_filename = find_a_file (&startfile_prefixes, p1, R_OK);
1823 read_specs (new_filename ? new_filename : p1, FALSE);
1826 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1827 && (p1[sizeof "%include_noerr" - 1] == ' '
1828 || p1[sizeof "%include_noerr" - 1] == '\t'))
1832 p1 += sizeof "%include_noerr";
1833 while (*p1 == ' ' || *p1 == '\t')
1836 if (*p1++ != '<' || p[-2] != '>')
1837 fatal ("specs %%include syntax malformed after %ld characters",
1838 (long) (p1 - buffer + 1));
1841 new_filename = find_a_file (&startfile_prefixes, p1, R_OK);
1843 read_specs (new_filename, FALSE);
1844 else if (verbose_flag)
1845 notice ("could not find specs file %s\n", p1);
1848 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1849 && (p1[sizeof "%rename" - 1] == ' '
1850 || p1[sizeof "%rename" - 1] == '\t'))
1853 struct spec_list *sl;
1855 /* Get original name */
1856 p1 += sizeof "%rename";
1857 while (*p1 == ' ' || *p1 == '\t')
1860 if (! ISALPHA ((unsigned char) *p1))
1861 fatal ("specs %%rename syntax malformed after %ld characters",
1862 (long) (p1 - buffer));
1865 while (*p2 && !ISSPACE ((unsigned char) *p2))
1868 if (*p2 != ' ' && *p2 != '\t')
1869 fatal ("specs %%rename syntax malformed after %ld characters",
1870 (long) (p2 - buffer));
1874 while (*p2 == ' ' || *p2 == '\t')
1877 if (! ISALPHA ((unsigned char) *p2))
1878 fatal ("specs %%rename syntax malformed after %ld characters",
1879 (long) (p2 - buffer));
1881 /* Get new spec name. */
1883 while (*p3 && !ISSPACE ((unsigned char) *p3))
1887 fatal ("specs %%rename syntax malformed after %ld characters",
1888 (long) (p3 - buffer));
1891 for (sl = specs; sl; sl = sl->next)
1892 if (name_len == sl->name_len && !strcmp (sl->name, p1))
1896 fatal ("specs %s spec was not found to be renamed", p1);
1898 if (strcmp (p1, p2) == 0)
1903 notice ("rename spec %s to %s\n", p1, p2);
1905 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
1909 set_spec (p2, *(sl->ptr_spec));
1911 free ((PTR) *(sl->ptr_spec));
1913 *(sl->ptr_spec) = "";
1918 fatal ("specs unknown %% command after %ld characters",
1919 (long) (p1 - buffer));
1922 /* Find the colon that should end the suffix. */
1924 while (*p1 && *p1 != ':' && *p1 != '\n')
1927 /* The colon shouldn't be missing. */
1929 fatal ("specs file malformed after %ld characters",
1930 (long) (p1 - buffer));
1932 /* Skip back over trailing whitespace. */
1934 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
1937 /* Copy the suffix to a string. */
1938 suffix = save_string (p, p2 - p);
1939 /* Find the next line. */
1940 p = skip_whitespace (p1 + 1);
1942 fatal ("specs file malformed after %ld characters",
1943 (long) (p - buffer));
1946 /* Find next blank line or end of string. */
1947 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
1950 /* Specs end at the blank line and do not include the newline. */
1951 spec = save_string (p, p1 - p);
1954 /* Delete backslash-newline sequences from the spec. */
1959 if (in[0] == '\\' && in[1] == '\n')
1961 else if (in[0] == '#')
1962 while (*in && *in != '\n')
1970 if (suffix[0] == '*')
1972 if (! strcmp (suffix, "*link_command"))
1973 link_command_spec = spec;
1975 set_spec (suffix + 1, spec);
1979 /* Add this pair to the vector. */
1981 = ((struct compiler *)
1982 xrealloc (compilers,
1983 (n_compilers + 2) * sizeof (struct compiler)));
1985 compilers[n_compilers].suffix = suffix;
1986 compilers[n_compilers].spec = spec;
1988 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
1992 link_command_spec = spec;
1995 if (link_command_spec == 0)
1996 fatal ("spec file has no spec for linking");
1999 /* Record the names of temporary files we tell compilers to write,
2000 and delete them at the end of the run. */
2002 /* This is the common prefix we use to make temp file names.
2003 It is chosen once for each run of this program.
2004 It is substituted into a spec by %g or %j.
2005 Thus, all temp file names contain this prefix.
2006 In practice, all temp file names start with this prefix.
2008 This prefix comes from the envvar TMPDIR if it is defined;
2009 otherwise, from the P_tmpdir macro if that is defined;
2010 otherwise, in /usr/tmp or /tmp;
2011 or finally the current directory if all else fails. */
2013 static const char *temp_filename;
2015 /* Length of the prefix. */
2017 static int temp_filename_length;
2019 /* Define the list of temporary files to delete. */
2024 struct temp_file *next;
2027 /* Queue of files to delete on success or failure of compilation. */
2028 static struct temp_file *always_delete_queue;
2029 /* Queue of files to delete on failure of compilation. */
2030 static struct temp_file *failure_delete_queue;
2032 /* Record FILENAME as a file to be deleted automatically.
2033 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2034 otherwise delete it in any case.
2035 FAIL_DELETE nonzero means delete it if a compilation step fails;
2036 otherwise delete it in any case. */
2039 record_temp_file (filename, always_delete, fail_delete)
2040 const char *filename;
2044 char *const name = xstrdup (filename);
2048 struct temp_file *temp;
2049 for (temp = always_delete_queue; temp; temp = temp->next)
2050 if (! strcmp (name, temp->name))
2053 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
2054 temp->next = always_delete_queue;
2056 always_delete_queue = temp;
2063 struct temp_file *temp;
2064 for (temp = failure_delete_queue; temp; temp = temp->next)
2065 if (! strcmp (name, temp->name))
2068 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
2069 temp->next = failure_delete_queue;
2071 failure_delete_queue = temp;
2077 /* Delete all the temporary files whose names we previously recorded. */
2080 delete_if_ordinary (name)
2087 printf ("Delete %s? (y or n) ", name);
2091 while ((c = getchar ()) != '\n' && c != EOF)
2094 if (i == 'y' || i == 'Y')
2096 if (stat (name, &st) >= 0 && S_ISREG (st.st_mode))
2097 if (unlink (name) < 0)
2099 perror_with_name (name);
2103 delete_temp_files ()
2105 struct temp_file *temp;
2107 for (temp = always_delete_queue; temp; temp = temp->next)
2108 delete_if_ordinary (temp->name);
2109 always_delete_queue = 0;
2112 /* Delete all the files to be deleted on error. */
2115 delete_failure_queue ()
2117 struct temp_file *temp;
2119 for (temp = failure_delete_queue; temp; temp = temp->next)
2120 delete_if_ordinary (temp->name);
2124 clear_failure_queue ()
2126 failure_delete_queue = 0;
2129 /* Build a list of search directories from PATHS.
2130 PREFIX is a string to prepend to the list.
2131 If CHECK_DIR_P is non-zero we ensure the directory exists.
2132 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2133 It is also used by the --print-search-dirs flag. */
2136 build_search_list (paths, prefix, check_dir_p)
2137 struct path_prefix *paths;
2141 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0;
2143 = (just_machine_suffix) ? strlen (just_machine_suffix) : 0;
2144 int first_time = TRUE;
2145 struct prefix_list *pprefix;
2147 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2148 obstack_1grow (&collect_obstack, '=');
2150 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next)
2152 int len = strlen (pprefix->prefix);
2156 || is_directory (pprefix->prefix, machine_suffix, 0)))
2159 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2162 obstack_grow (&collect_obstack, pprefix->prefix, len);
2163 obstack_grow (&collect_obstack, machine_suffix, suffix_len);
2166 if (just_machine_suffix
2167 && pprefix->require_machine_suffix == 2
2169 || is_directory (pprefix->prefix, just_machine_suffix, 0)))
2172 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2175 obstack_grow (&collect_obstack, pprefix->prefix, len);
2176 obstack_grow (&collect_obstack, just_machine_suffix,
2180 if (! pprefix->require_machine_suffix)
2183 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2186 obstack_grow (&collect_obstack, pprefix->prefix, len);
2190 obstack_1grow (&collect_obstack, '\0');
2191 return obstack_finish (&collect_obstack);
2194 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2198 putenv_from_prefixes (paths, env_var)
2199 struct path_prefix *paths;
2200 const char *env_var;
2202 putenv (build_search_list (paths, env_var, 1));
2207 /* FIXME: the location independence code for VMS is hairier than this,
2208 and hasn't been written. */
2210 /* Split a filename into component directories. */
2213 split_directories (name, ptr_num_dirs)
2222 /* Count the number of directories. Special case MSDOS disk names as part
2223 of the initial directory. */
2225 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2226 if (name[1] == ':' && IS_DIR_SEPARATOR (name[2]))
2231 #endif /* HAVE_DOS_BASED_FILE_SYSTEM */
2233 while ((ch = *p++) != '\0')
2235 if (IS_DIR_SEPARATOR (ch))
2238 while (IS_DIR_SEPARATOR (*p))
2243 dirs = (char **) xmalloc (sizeof (char *) * (num_dirs + 2));
2245 /* Now copy the directory parts. */
2248 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2249 if (name[1] == ':' && IS_DIR_SEPARATOR (name[2]))
2251 dirs[num_dirs++] = save_string (p, 3);
2254 #endif /* HAVE_DOS_BASED_FILE_SYSTEM */
2257 while ((ch = *p++) != '\0')
2259 if (IS_DIR_SEPARATOR (ch))
2261 while (IS_DIR_SEPARATOR (*p))
2264 dirs[num_dirs++] = save_string (q, p - q);
2270 dirs[num_dirs++] = save_string (q, p - 1 - q);
2272 dirs[num_dirs] = NULL;
2274 *ptr_num_dirs = num_dirs;
2279 /* Release storage held by split directories. */
2282 free_split_directories (dirs)
2287 while (dirs[i] != NULL)
2290 free ((char *) dirs);
2293 /* Given three strings PROGNAME, BIN_PREFIX, PREFIX, return a string that gets
2294 to PREFIX starting with the directory portion of PROGNAME and a relative
2295 pathname of the difference between BIN_PREFIX and PREFIX.
2297 For example, if BIN_PREFIX is /alpha/beta/gamma/gcc/delta, PREFIX is
2298 /alpha/beta/gamma/omega/, and PROGNAME is /red/green/blue/gcc, then this
2299 function will return /red/green/blue/../omega.
2301 If no relative prefix can be found, return NULL. */
2304 make_relative_prefix (progname, bin_prefix, prefix)
2305 const char *progname;
2306 const char *bin_prefix;
2309 char **prog_dirs, **bin_dirs, **prefix_dirs;
2310 int prog_num, bin_num, prefix_num, std_loc_p;
2313 prog_dirs = split_directories (progname, &prog_num);
2314 bin_dirs = split_directories (bin_prefix, &bin_num);
2316 /* If there is no full pathname, try to find the program by checking in each
2317 of the directories specified in the PATH environment variable. */
2322 GET_ENV_PATH_LIST (temp, "PATH");
2325 char *startp, *endp, *nstore;
2326 size_t prefixlen = strlen (temp) + 1;
2330 nstore = (char *) alloca (prefixlen + strlen (progname) + 1);
2332 startp = endp = temp;
2335 if (*endp == PATH_SEPARATOR || *endp == 0)
2340 nstore[1] = DIR_SEPARATOR;
2345 strncpy (nstore, startp, endp - startp);
2346 if (! IS_DIR_SEPARATOR (endp[-1]))
2348 nstore[endp - startp] = DIR_SEPARATOR;
2349 nstore[endp - startp + 1] = 0;
2352 nstore[endp - startp] = 0;
2354 strcat (nstore, progname);
2355 if (! access (nstore, X_OK)
2356 #ifdef HAVE_HOST_EXECUTABLE_SUFFIX
2357 || ! access (strcat (nstore, HOST_EXECUTABLE_SUFFIX), X_OK)
2361 free_split_directories (prog_dirs);
2363 prog_dirs = split_directories (progname, &prog_num);
2369 endp = startp = endp + 1;
2377 /* Remove the program name from comparison of directory names. */
2380 /* Determine if the compiler is installed in the standard location, and if
2381 so, we don't need to specify relative directories. Also, if argv[0]
2382 doesn't contain any directory specifiers, there is not much we can do. */
2384 if (prog_num == bin_num)
2386 for (i = 0; i < bin_num; i++)
2388 if (strcmp (prog_dirs[i], bin_dirs[i]) != 0)
2392 if (prog_num <= 0 || i == bin_num)
2395 free_split_directories (prog_dirs);
2396 free_split_directories (bin_dirs);
2397 prog_dirs = bin_dirs = (char **) 0;
2402 prefix_dirs = split_directories (prefix, &prefix_num);
2404 /* Find how many directories are in common between bin_prefix & prefix. */
2405 n = (prefix_num < bin_num) ? prefix_num : bin_num;
2406 for (common = 0; common < n; common++)
2408 if (strcmp (bin_dirs[common], prefix_dirs[common]) != 0)
2412 /* If there are no common directories, there can be no relative prefix. */
2415 free_split_directories (prog_dirs);
2416 free_split_directories (bin_dirs);
2417 free_split_directories (prefix_dirs);
2421 /* Build up the pathnames in argv[0]. */
2422 for (i = 0; i < prog_num; i++)
2423 obstack_grow (&obstack, prog_dirs[i], strlen (prog_dirs[i]));
2425 /* Now build up the ..'s. */
2426 for (i = common; i < n; i++)
2428 obstack_grow (&obstack, DIR_UP, sizeof (DIR_UP) - 1);
2429 obstack_1grow (&obstack, DIR_SEPARATOR);
2432 /* Put in directories to move over to prefix. */
2433 for (i = common; i < prefix_num; i++)
2434 obstack_grow (&obstack, prefix_dirs[i], strlen (prefix_dirs[i]));
2436 free_split_directories (prog_dirs);
2437 free_split_directories (bin_dirs);
2438 free_split_directories (prefix_dirs);
2440 obstack_1grow (&obstack, '\0');
2441 return obstack_finish (&obstack);
2445 /* Check whether NAME can be accessed in MODE. This is like access,
2446 except that it never considers directories to be executable. */
2449 access_check (name, mode)
2457 if (stat (name, &st) < 0
2458 || S_ISDIR (st.st_mode))
2462 return access (name, mode);
2465 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2466 access to check permissions.
2467 Return 0 if not found, otherwise return its name, allocated with malloc. */
2470 find_a_file (pprefix, name, mode)
2471 struct path_prefix *pprefix;
2476 const char *const file_suffix =
2477 ((mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "");
2478 struct prefix_list *pl;
2479 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1;
2481 #ifdef DEFAULT_ASSEMBLER
2482 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2483 return xstrdup (DEFAULT_ASSEMBLER);
2486 #ifdef DEFAULT_LINKER
2487 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2488 return xstrdup (DEFAULT_LINKER);
2492 len += strlen (machine_suffix);
2494 temp = xmalloc (len);
2496 /* Determine the filename to execute (special case for absolute paths). */
2498 if (IS_ABSOLUTE_PATHNAME (name))
2500 if (access (name, mode) == 0)
2502 strcpy (temp, name);
2507 for (pl = pprefix->plist; pl; pl = pl->next)
2511 /* Some systems have a suffix for executable files.
2512 So try appending that first. */
2513 if (file_suffix[0] != 0)
2515 strcpy (temp, pl->prefix);
2516 strcat (temp, machine_suffix);
2517 strcat (temp, name);
2518 strcat (temp, file_suffix);
2519 if (access_check (temp, mode) == 0)
2521 if (pl->used_flag_ptr != 0)
2522 *pl->used_flag_ptr = 1;
2527 /* Now try just the name. */
2528 strcpy (temp, pl->prefix);
2529 strcat (temp, machine_suffix);
2530 strcat (temp, name);
2531 if (access_check (temp, mode) == 0)
2533 if (pl->used_flag_ptr != 0)
2534 *pl->used_flag_ptr = 1;
2539 /* Certain prefixes are tried with just the machine type,
2540 not the version. This is used for finding as, ld, etc. */
2541 if (just_machine_suffix && pl->require_machine_suffix == 2)
2543 /* Some systems have a suffix for executable files.
2544 So try appending that first. */
2545 if (file_suffix[0] != 0)
2547 strcpy (temp, pl->prefix);
2548 strcat (temp, just_machine_suffix);
2549 strcat (temp, name);
2550 strcat (temp, file_suffix);
2551 if (access_check (temp, mode) == 0)
2553 if (pl->used_flag_ptr != 0)
2554 *pl->used_flag_ptr = 1;
2559 strcpy (temp, pl->prefix);
2560 strcat (temp, just_machine_suffix);
2561 strcat (temp, name);
2562 if (access_check (temp, mode) == 0)
2564 if (pl->used_flag_ptr != 0)
2565 *pl->used_flag_ptr = 1;
2570 /* Certain prefixes can't be used without the machine suffix
2571 when the machine or version is explicitly specified. */
2572 if (! pl->require_machine_suffix)
2574 /* Some systems have a suffix for executable files.
2575 So try appending that first. */
2576 if (file_suffix[0] != 0)
2578 strcpy (temp, pl->prefix);
2579 strcat (temp, name);
2580 strcat (temp, file_suffix);
2581 if (access_check (temp, mode) == 0)
2583 if (pl->used_flag_ptr != 0)
2584 *pl->used_flag_ptr = 1;
2589 strcpy (temp, pl->prefix);
2590 strcat (temp, name);
2591 if (access_check (temp, mode) == 0)
2593 if (pl->used_flag_ptr != 0)
2594 *pl->used_flag_ptr = 1;
2604 /* Ranking of prefixes in the sort list. -B prefixes are put before
2607 enum path_prefix_priority
2609 PREFIX_PRIORITY_B_OPT,
2610 PREFIX_PRIORITY_LAST
2613 /* Add an entry for PREFIX in PLIST. The PLIST is kept in assending
2614 order according to PRIORITY. Within each PRIORITY, new entries are
2617 If WARN is nonzero, we will warn if no file is found
2618 through this prefix. WARN should point to an int
2619 which will be set to 1 if this entry is used.
2621 COMPONENT is the value to be passed to update_path.
2623 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2624 the complete value of machine_suffix.
2625 2 means try both machine_suffix and just_machine_suffix. */
2628 add_prefix (pprefix, prefix, component, priority, require_machine_suffix, warn)
2629 struct path_prefix *pprefix;
2631 const char *component;
2632 /* enum prefix_priority */ int priority;
2633 int require_machine_suffix;
2636 struct prefix_list *pl, **prev;
2639 for (prev = &pprefix->plist;
2640 (*prev) != NULL && (*prev)->priority <= priority;
2641 prev = &(*prev)->next)
2644 /* Keep track of the longest prefix */
2646 prefix = update_path (prefix, component);
2647 len = strlen (prefix);
2648 if (len > pprefix->max_len)
2649 pprefix->max_len = len;
2651 pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
2652 pl->prefix = prefix;
2653 pl->require_machine_suffix = require_machine_suffix;
2654 pl->used_flag_ptr = warn;
2655 pl->priority = priority;
2659 /* Insert after PREV */
2664 /* Execute the command specified by the arguments on the current line of spec.
2665 When using pipes, this includes several piped-together commands
2666 with `|' between them.
2668 Return 0 if successful, -1 if failed. */
2674 int n_commands; /* # of command. */
2678 const char *prog; /* program name. */
2679 const char **argv; /* vector of args. */
2680 int pid; /* pid of process for this command. */
2683 struct command *commands; /* each command buffer with above info. */
2685 /* Count # of piped commands. */
2686 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2687 if (strcmp (argbuf[i], "|") == 0)
2690 /* Get storage for each command. */
2691 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2693 /* Split argbuf into its separate piped processes,
2694 and record info about each one.
2695 Also search for the programs that are to be run. */
2697 commands[0].prog = argbuf[0]; /* first command. */
2698 commands[0].argv = &argbuf[0];
2699 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK);
2702 commands[0].argv[0] = string;
2704 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2705 if (strcmp (argbuf[i], "|") == 0)
2706 { /* each command. */
2707 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2708 fatal ("-pipe not supported");
2710 argbuf[i] = 0; /* termination of command args. */
2711 commands[n_commands].prog = argbuf[i + 1];
2712 commands[n_commands].argv = &argbuf[i + 1];
2713 string = find_a_file (&exec_prefixes, commands[n_commands].prog, X_OK);
2715 commands[n_commands].argv[0] = string;
2719 argbuf[argbuf_index] = 0;
2721 /* If -v, print what we are about to do, and maybe query. */
2725 /* For help listings, put a blank line between sub-processes. */
2726 if (print_help_list)
2727 fputc ('\n', stderr);
2729 /* Print each piped command as a separate line. */
2730 for (i = 0; i < n_commands; i++)
2732 const char *const *j;
2734 if (verbose_only_flag)
2736 for (j = commands[i].argv; *j; j++)
2739 fprintf (stderr, " \"");
2740 for (p = *j; *p; ++p)
2742 if (*p == '"' || *p == '\\' || *p == '$')
2743 fputc ('\\', stderr);
2746 fputc ('"', stderr);
2750 for (j = commands[i].argv; *j; j++)
2751 fprintf (stderr, " %s", *j);
2753 /* Print a pipe symbol after all but the last command. */
2754 if (i + 1 != n_commands)
2755 fprintf (stderr, " |");
2756 fprintf (stderr, "\n");
2759 if (verbose_only_flag != 0)
2762 notice ("\nGo ahead? (y or n) ");
2766 while (getchar () != '\n')
2769 if (i != 'y' && i != 'Y')
2774 /* Run each piped subprocess. */
2776 for (i = 0; i < n_commands; i++)
2778 char *errmsg_fmt, *errmsg_arg;
2779 const char *string = commands[i].argv[0];
2781 /* For some bizarre reason, the second argument of execvp() is
2782 char *const *, not const char *const *. */
2783 commands[i].pid = pexecute (string, (char *const *) commands[i].argv,
2784 programname, temp_filename,
2785 &errmsg_fmt, &errmsg_arg,
2786 ((i == 0 ? PEXECUTE_FIRST : 0)
2787 | (i + 1 == n_commands ? PEXECUTE_LAST : 0)
2788 | (string == commands[i].prog
2789 ? PEXECUTE_SEARCH : 0)
2790 | (verbose_flag ? PEXECUTE_VERBOSE : 0)));
2792 if (commands[i].pid == -1)
2793 pfatal_pexecute (errmsg_fmt, errmsg_arg);
2795 if (string != commands[i].prog)
2796 free ((PTR) string);
2801 /* Wait for all the subprocesses to finish.
2802 We don't care what order they finish in;
2803 we know that N_COMMANDS waits will get them all.
2804 Ignore subprocesses that we don't know about,
2805 since they can be spawned by the process that exec'ed us. */
2809 #ifdef HAVE_GETRUSAGE
2811 double ut = 0.0, st = 0.0;
2814 for (i = 0; i < n_commands;)
2820 pid = pwait (commands[i].pid, &status, 0);
2824 #ifdef HAVE_GETRUSAGE
2827 /* getrusage returns the total resource usage of all children
2828 up to now. Copy the previous values into prus, get the
2829 current statistics, then take the difference. */
2832 getrusage (RUSAGE_CHILDREN, &rus);
2833 d.tv_sec = rus.ru_utime.tv_sec - prus.ru_utime.tv_sec;
2834 d.tv_usec = rus.ru_utime.tv_usec - prus.ru_utime.tv_usec;
2835 ut = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2837 d.tv_sec = rus.ru_stime.tv_sec - prus.ru_stime.tv_sec;
2838 d.tv_usec = rus.ru_stime.tv_usec - prus.ru_stime.tv_usec;
2839 st = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2843 for (j = 0; j < n_commands; j++)
2844 if (commands[j].pid == pid)
2847 if (WIFSIGNALED (status))
2850 /* SIGPIPE is a special case. It happens in -pipe mode
2851 when the compiler dies before the preprocessor is
2852 done, or the assembler dies before the compiler is
2853 done. There's generally been an error already, and
2854 this is just fallout. So don't generate another error
2855 unless we would otherwise have succeeded. */
2856 if (WTERMSIG (status) == SIGPIPE
2857 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2862 Internal error: %s (program %s)\n\
2863 Please submit a full bug report.\n\
2864 See %s for instructions.",
2865 strsignal (WTERMSIG (status)), commands[j].prog,
2870 else if (WIFEXITED (status)
2871 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2873 if (WEXITSTATUS (status) > greatest_status)
2874 greatest_status = WEXITSTATUS (status);
2877 #ifdef HAVE_GETRUSAGE
2878 if (report_times && ut + st != 0)
2879 notice ("# %s %.2f %.2f\n", commands[j].prog, ut, st);
2888 /* Find all the switches given to us
2889 and make a vector describing them.
2890 The elements of the vector are strings, one per switch given.
2891 If a switch uses following arguments, then the `part1' field
2892 is the switch itself and the `args' field
2893 is a null-terminated vector containing the following arguments.
2894 The `live_cond' field is:
2896 1 if the switch is true in a conditional spec,
2897 -1 if false (overridden by a later switch)
2898 -2 if this switch should be ignored (used in %{<S})
2899 The `validated' field is nonzero if any spec has looked at this switch;
2900 if it remains zero at the end of the run, it must be meaningless. */
2903 #define SWITCH_FALSE -1
2904 #define SWITCH_IGNORE -2
2905 #define SWITCH_LIVE 1
2912 unsigned char validated;
2913 unsigned char ordering;
2916 static struct switchstr *switches;
2918 static int n_switches;
2923 const char *language;
2926 /* Also a vector of input files specified. */
2928 static struct infile *infiles;
2932 /* This counts the number of libraries added by lang_specific_driver, so that
2933 we can tell if there were any user supplied any files or libraries. */
2935 static int added_libraries;
2937 /* And a vector of corresponding output files is made up later. */
2939 const char **outfiles;
2941 /* Used to track if none of the -B paths are used. */
2944 /* Used to track if standard path isn't used and -b or -V is specified. */
2945 static int warn_std;
2947 /* Gives value to pass as "warn" to add_prefix for standard prefixes. */
2948 static int *warn_std_ptr = 0;
2950 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2952 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2953 is true if we should look for an executable suffix. DO_OBJ
2954 is true if we should look for an object suffix. */
2957 convert_filename (name, do_exe, do_obj)
2959 int do_exe ATTRIBUTE_UNUSED;
2960 int do_obj ATTRIBUTE_UNUSED;
2962 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2970 len = strlen (name);
2972 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2973 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2974 if (do_obj && len > 2
2975 && name[len - 2] == '.'
2976 && name[len - 1] == 'o')
2978 obstack_grow (&obstack, name, len - 2);
2979 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2980 name = obstack_finish (&obstack);
2984 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2985 /* If there is no filetype, make it the executable suffix (which includes
2986 the "."). But don't get confused if we have just "-o". */
2987 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
2990 for (i = len - 1; i >= 0; i--)
2991 if (IS_DIR_SEPARATOR (name[i]))
2994 for (i++; i < len; i++)
2998 obstack_grow (&obstack, name, len);
2999 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
3000 strlen (TARGET_EXECUTABLE_SUFFIX));
3001 name = obstack_finish (&obstack);
3008 /* Display the command line switches accepted by gcc. */
3012 printf (_("Usage: %s [options] file...\n"), programname);
3013 fputs (_("Options:\n"), stdout);
3015 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
3016 fputs (_(" --help Display this information\n"), stdout);
3017 fputs (_(" --target-help Display target specific command line options\n"), stdout);
3019 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
3020 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
3021 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
3022 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
3023 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
3024 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
3025 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
3026 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
3027 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
3029 -print-multi-lib Display the mapping between command line options and\n\
3030 multiple library search directories\n"), stdout);
3031 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3032 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3033 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3034 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3035 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3036 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3037 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3038 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3039 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3040 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3041 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
3042 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
3043 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3044 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3045 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3046 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3047 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3048 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3050 -x <language> Specify the language of the following input files\n\
3051 Permissable languages include: c c++ assembler none\n\
3052 'none' means revert to the default behavior of\n\
3053 guessing the language based on the file's extension\n\
3057 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3058 passed on to the various sub-processes invoked by %s. In order to pass\n\
3059 other options on to these processes the -W<letter> options must be used.\n\
3062 /* The rest of the options are displayed by invocations of the various
3067 add_preprocessor_option (option, len)
3071 n_preprocessor_options++;
3073 if (! preprocessor_options)
3074 preprocessor_options
3075 = (char **) xmalloc (n_preprocessor_options * sizeof (char *));
3077 preprocessor_options
3078 = (char **) xrealloc (preprocessor_options,
3079 n_preprocessor_options * sizeof (char *));
3081 preprocessor_options [n_preprocessor_options - 1] =
3082 save_string (option, len);
3086 add_assembler_option (option, len)
3090 n_assembler_options++;
3092 if (! assembler_options)
3094 = (char **) xmalloc (n_assembler_options * sizeof (char *));
3097 = (char **) xrealloc (assembler_options,
3098 n_assembler_options * sizeof (char *));
3100 assembler_options [n_assembler_options - 1] = save_string (option, len);
3104 add_linker_option (option, len)
3110 if (! linker_options)
3112 = (char **) xmalloc (n_linker_options * sizeof (char *));
3115 = (char **) xrealloc (linker_options,
3116 n_linker_options * sizeof (char *));
3118 linker_options [n_linker_options - 1] = save_string (option, len);
3121 /* Create the vector `switches' and its contents.
3122 Store its length in `n_switches'. */
3125 process_command (argc, argv)
3127 const char *const *argv;
3132 const char *spec_lang = 0;
3133 int last_language_n_infiles;
3136 int lang_n_infiles = 0;
3137 #ifdef MODIFY_TARGET_NAME
3138 int is_modify_target_name;
3142 GET_ENV_PATH_LIST (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3146 added_libraries = 0;
3148 /* Figure compiler version from version string. */
3150 compiler_version = temp1 = xstrdup (version_string);
3152 for (; *temp1; ++temp1)
3161 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3162 see if we can create it from the pathname specified in argv[0]. */
3165 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3166 if (!gcc_exec_prefix)
3168 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
3169 standard_exec_prefix);
3170 if (gcc_exec_prefix)
3171 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3175 if (gcc_exec_prefix)
3177 int len = strlen (gcc_exec_prefix);
3179 if (len > (int) sizeof ("/lib/gcc-lib/") - 1
3180 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3182 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc-lib/") + 1;
3183 if (IS_DIR_SEPARATOR (*temp)
3184 && strncmp (temp + 1, "lib", 3) == 0
3185 && IS_DIR_SEPARATOR (temp[4])
3186 && strncmp (temp + 5, "gcc-lib", 7) == 0)
3187 len -= sizeof ("/lib/gcc-lib/") - 1;
3190 set_std_prefix (gcc_exec_prefix, len);
3191 add_prefix (&exec_prefixes, gcc_exec_prefix, "GCC",
3192 PREFIX_PRIORITY_LAST, 0, NULL);
3193 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3194 PREFIX_PRIORITY_LAST, 0, NULL);
3197 /* COMPILER_PATH and LIBRARY_PATH have values
3198 that are lists of directory names with colons. */
3200 GET_ENV_PATH_LIST (temp, "COMPILER_PATH");
3203 const char *startp, *endp;
3204 char *nstore = (char *) alloca (strlen (temp) + 3);
3206 startp = endp = temp;
3209 if (*endp == PATH_SEPARATOR || *endp == 0)
3211 strncpy (nstore, startp, endp - startp);
3213 strcpy (nstore, concat (".", dir_separator_str, NULL));
3214 else if (!IS_DIR_SEPARATOR (endp[-1]))
3216 nstore[endp - startp] = DIR_SEPARATOR;
3217 nstore[endp - startp + 1] = 0;
3220 nstore[endp - startp] = 0;
3221 add_prefix (&exec_prefixes, nstore, 0,
3222 PREFIX_PRIORITY_LAST, 0, NULL);
3223 add_prefix (&include_prefixes,
3224 concat (nstore, "include", NULL),
3225 0, PREFIX_PRIORITY_LAST, 0, NULL);
3228 endp = startp = endp + 1;
3235 GET_ENV_PATH_LIST (temp, LIBRARY_PATH_ENV);
3236 if (temp && *cross_compile == '0')
3238 const char *startp, *endp;
3239 char *nstore = (char *) alloca (strlen (temp) + 3);
3241 startp = endp = temp;
3244 if (*endp == PATH_SEPARATOR || *endp == 0)
3246 strncpy (nstore, startp, endp - startp);
3248 strcpy (nstore, concat (".", dir_separator_str, NULL));
3249 else if (!IS_DIR_SEPARATOR (endp[-1]))
3251 nstore[endp - startp] = DIR_SEPARATOR;
3252 nstore[endp - startp + 1] = 0;
3255 nstore[endp - startp] = 0;
3256 add_prefix (&startfile_prefixes, nstore, NULL,
3257 PREFIX_PRIORITY_LAST, 0, NULL);
3260 endp = startp = endp + 1;
3267 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3268 GET_ENV_PATH_LIST (temp, "LPATH");
3269 if (temp && *cross_compile == '0')
3271 const char *startp, *endp;
3272 char *nstore = (char *) alloca (strlen (temp) + 3);
3274 startp = endp = temp;
3277 if (*endp == PATH_SEPARATOR || *endp == 0)
3279 strncpy (nstore, startp, endp - startp);
3281 strcpy (nstore, concat (".", dir_separator_str, NULL));
3282 else if (!IS_DIR_SEPARATOR (endp[-1]))
3284 nstore[endp - startp] = DIR_SEPARATOR;
3285 nstore[endp - startp + 1] = 0;
3288 nstore[endp - startp] = 0;
3289 add_prefix (&startfile_prefixes, nstore, NULL,
3290 PREFIX_PRIORITY_LAST, 0, NULL);
3293 endp = startp = endp + 1;
3300 /* Convert new-style -- options to old-style. */
3301 translate_options (&argc, &argv);
3303 /* Do language-specific adjustment/addition of flags. */
3304 lang_specific_driver (&argc, &argv, &added_libraries);
3306 /* Scan argv twice. Here, the first time, just count how many switches
3307 there will be in their vector, and how many input files in theirs.
3308 Also parse any switches that determine the configuration name, such as -b.
3309 Here we also parse the switches that cc itself uses (e.g. -v). */
3311 for (i = 1; i < argc; i++)
3313 if (! strcmp (argv[i], "-dumpspecs"))
3315 struct spec_list *sl;
3317 for (sl = specs; sl; sl = sl->next)
3318 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3319 if (link_command_spec)
3320 printf ("*link_command:\n%s\n\n", link_command_spec);
3323 else if (! strcmp (argv[i], "-dumpversion"))
3325 printf ("%s\n", spec_version);
3328 else if (! strcmp (argv[i], "-dumpmachine"))
3330 printf ("%s\n", spec_machine);
3333 else if (strcmp (argv[i], "-fversion") == 0)
3335 /* translate_options () has turned --version into -fversion. */
3336 printf (_("%s (GCC) %s\n"), programname, version_string);
3337 fputs (_("Copyright (C) 2002 Free Software Foundation, Inc.\n"),
3339 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
3340 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
3344 else if (strcmp (argv[i], "-fhelp") == 0)
3346 /* translate_options () has turned --help into -fhelp. */
3347 print_help_list = 1;
3349 /* We will be passing a dummy file on to the sub-processes. */
3353 /* CPP driver cannot obtain switch from cc1_options. */
3355 add_preprocessor_option ("--help", 6);
3356 add_assembler_option ("--help", 6);
3357 add_linker_option ("--help", 6);
3359 else if (strcmp (argv[i], "-ftarget-help") == 0)
3361 /* translate_options() has turned --target-help into -ftarget-help. */
3362 target_help_flag = 1;
3364 /* We will be passing a dummy file on to the sub-processes. */
3368 /* CPP driver cannot obtain switch from cc1_options. */
3370 add_preprocessor_option ("--target-help", 13);
3371 add_assembler_option ("--target-help", 13);
3372 add_linker_option ("--target-help", 13);
3374 else if (! strcmp (argv[i], "-pass-exit-codes"))
3376 pass_exit_codes = 1;
3379 else if (! strcmp (argv[i], "-print-search-dirs"))
3380 print_search_dirs = 1;
3381 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3382 print_file_name = "libgcc.a";
3383 else if (! strncmp (argv[i], "-print-file-name=", 17))
3384 print_file_name = argv[i] + 17;
3385 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3386 print_prog_name = argv[i] + 17;
3387 else if (! strcmp (argv[i], "-print-multi-lib"))
3388 print_multi_lib = 1;
3389 else if (! strcmp (argv[i], "-print-multi-directory"))
3390 print_multi_directory = 1;
3391 else if (! strncmp (argv[i], "-Wa,", 4))
3394 /* Pass the rest of this option to the assembler. */
3396 /* Split the argument at commas. */
3398 for (j = 4; argv[i][j]; j++)
3399 if (argv[i][j] == ',')
3401 add_assembler_option (argv[i] + prev, j - prev);
3405 /* Record the part after the last comma. */
3406 add_assembler_option (argv[i] + prev, j - prev);
3408 else if (! strncmp (argv[i], "-Wp,", 4))
3411 /* Pass the rest of this option to the preprocessor. */
3413 /* Split the argument at commas. */
3415 for (j = 4; argv[i][j]; j++)
3416 if (argv[i][j] == ',')
3418 add_preprocessor_option (argv[i] + prev, j - prev);
3422 /* Record the part after the last comma. */
3423 add_preprocessor_option (argv[i] + prev, j - prev);
3425 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3426 /* The +e options to the C++ front-end. */
3428 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3431 /* Split the argument at commas. */
3432 for (j = 3; argv[i][j]; j++)
3433 n_infiles += (argv[i][j] == ',');
3435 else if (strcmp (argv[i], "-Xlinker") == 0)
3438 fatal ("argument to `-Xlinker' is missing");
3443 else if (strcmp (argv[i], "-l") == 0)
3446 fatal ("argument to `-l' is missing");
3451 else if (strncmp (argv[i], "-l", 2) == 0)
3453 else if (strcmp (argv[i], "-save-temps") == 0)
3455 save_temps_flag = 1;
3458 else if (strcmp (argv[i], "-specs") == 0)
3460 struct user_specs *user = (struct user_specs *)
3461 xmalloc (sizeof (struct user_specs));
3463 fatal ("argument to `-specs' is missing");
3465 user->next = (struct user_specs *) 0;
3466 user->filename = argv[i];
3467 if (user_specs_tail)
3468 user_specs_tail->next = user;
3470 user_specs_head = user;
3471 user_specs_tail = user;
3473 else if (strncmp (argv[i], "-specs=", 7) == 0)
3475 struct user_specs *user = (struct user_specs *)
3476 xmalloc (sizeof (struct user_specs));
3477 if (strlen (argv[i]) == 7)
3478 fatal ("argument to `-specs=' is missing");
3480 user->next = (struct user_specs *) 0;
3481 user->filename = argv[i] + 7;
3482 if (user_specs_tail)
3483 user_specs_tail->next = user;
3485 user_specs_head = user;
3486 user_specs_tail = user;
3488 else if (strcmp (argv[i], "-time") == 0)
3490 else if (strcmp (argv[i], "-###") == 0)
3492 /* This is similar to -v except that there is no execution
3493 of the commands and the echoed arguments are quoted. It
3494 is intended for use in shell scripts to capture the
3495 driver-generated command line. */
3496 verbose_only_flag++;
3499 else if (argv[i][0] == '-' && argv[i][1] != 0)
3501 const char *p = &argv[i][1];
3508 if (p[1] == 0 && i + 1 == argc)
3509 fatal ("argument to `-b' is missing");
3511 spec_machine = argv[++i];
3513 spec_machine = p + 1;
3515 warn_std_ptr = &warn_std;
3523 if (p[1] == 0 && i + 1 == argc)
3524 fatal ("argument to `-B' is missing");
3530 len = strlen (value);
3532 /* Catch the case where the user has forgotten to append a
3533 directory separator to the path. Note, they may be using
3534 -B to add an executable name prefix, eg "i386-elf-", in
3535 order to distinguish between multiple installations of
3536 GCC in the same directory. Hence we must check to see
3537 if appending a directory separator actually makes a
3538 valid directory name. */
3539 if (! IS_DIR_SEPARATOR (value [len - 1])
3540 && is_directory (value, "", 0))
3542 char *tmp = xmalloc (len + 2);
3543 strcpy (tmp, value);
3544 tmp[len] = DIR_SEPARATOR;
3549 /* As a kludge, if the arg is "[foo/]stageN/", just
3550 add "[foo/]include" to the include prefix. */
3553 && (IS_DIR_SEPARATOR (value[len - 8]))))
3554 && strncmp (value + len - 7, "stage", 5) == 0
3555 && ISDIGIT (value[len - 2])
3556 && (IS_DIR_SEPARATOR (value[len - 1])))
3559 add_prefix (&include_prefixes, "include", NULL,
3560 PREFIX_PRIORITY_B_OPT, 0, NULL);
3563 char * string = xmalloc (len + 1);
3565 strncpy (string, value, len - 7);
3566 strcpy (string + len - 7, "include");
3567 add_prefix (&include_prefixes, string, NULL,
3568 PREFIX_PRIORITY_B_OPT, 0, NULL);
3572 add_prefix (&exec_prefixes, value, NULL,
3573 PREFIX_PRIORITY_B_OPT, 0, &warn_B);
3574 add_prefix (&startfile_prefixes, value, NULL,
3575 PREFIX_PRIORITY_B_OPT, 0, &warn_B);
3576 add_prefix (&include_prefixes, concat (value, "include", NULL),
3577 NULL, PREFIX_PRIORITY_B_OPT, 0, NULL);
3582 case 'v': /* Print our subcommands and print versions. */
3584 /* If they do anything other than exactly `-v', don't set
3585 verbose_flag; rather, continue on to give the error. */
3593 if (p[1] == 0 && i + 1 == argc)
3594 fatal ("argument to `-V' is missing");
3596 spec_version = argv[++i];
3598 spec_version = p + 1;
3599 compiler_version = spec_version;
3600 warn_std_ptr = &warn_std;
3602 /* Validate the version number. Use the same checks
3603 done when inserting it into a spec.
3605 The format of the version string is
3606 ([^0-9]*-)?[0-9]+[.][0-9]+([.][0-9]+)?([- ].*)? */
3608 const char *v = compiler_version;
3610 /* Ignore leading non-digits. i.e. "foo-" in "foo-2.7.2". */
3611 while (! ISDIGIT (*v))
3614 if (v > compiler_version && v[-1] != '-')
3615 fatal ("invalid version number format");
3617 /* Set V after the first period. */
3618 while (ISDIGIT (*v))
3622 fatal ("invalid version number format");
3625 while (ISDIGIT (*v))
3628 if (*v != 0 && *v != ' ' && *v != '.' && *v != '-')
3629 fatal ("invalid version number format");
3645 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3650 /* Forward scan, just in case -S or -c is specified
3657 if (argv[j][0] == '-')
3659 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
3665 else if ((skip = SWITCH_TAKES_ARG (argv[j][1])))
3666 j += skip - (argv[j][2] != 0);
3667 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1)))
3674 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3676 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0);
3678 argv[i] = convert_filename (argv[i], ! have_c, 0);
3685 #ifdef MODIFY_TARGET_NAME
3686 is_modify_target_name = 0;
3688 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3689 if (! strcmp (argv[i], modify_target[j].sw))
3692 = (char *) xmalloc (strlen (modify_target[j].str)
3693 + strlen (spec_machine));
3696 int made_addition = 0;
3698 is_modify_target_name = 1;
3699 for (p = spec_machine, q = new_name; *p != 0; )
3701 if (modify_target[j].add_del == DELETE
3702 && (! strncmp (q, modify_target[j].str,
3703 strlen (modify_target[j].str))))
3704 p += strlen (modify_target[j].str);
3705 else if (modify_target[j].add_del == ADD
3706 && ! made_addition && *p == '-')
3708 for (r = modify_target[j].str; *r != 0; )
3716 spec_machine = new_name;
3719 if (is_modify_target_name)
3725 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
3726 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
3727 else if (WORD_SWITCH_TAKES_ARG (p))
3728 i += WORD_SWITCH_TAKES_ARG (p);
3738 if (have_c && have_o && lang_n_infiles > 1)
3739 fatal ("cannot specify -o with -c or -S and multiple compilations");
3741 /* Set up the search paths before we go looking for config files. */
3743 /* These come before the md prefixes so that we will find gcc's subcommands
3744 (such as cpp) rather than those of the host system. */
3745 /* Use 2 as fourth arg meaning try just the machine as a suffix,
3746 as well as trying the machine and the version. */
3748 add_prefix (&exec_prefixes, standard_exec_prefix, "GCC",
3749 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3750 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3751 PREFIX_PRIORITY_LAST, 2, warn_std_ptr);
3752 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS",
3753 PREFIX_PRIORITY_LAST, 2, warn_std_ptr);
3756 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3757 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3758 add_prefix (&startfile_prefixes, standard_exec_prefix_1, "BINUTILS",
3759 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3761 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3762 dir_separator_str, NULL);
3764 /* If tooldir is relative, base it on exec_prefixes. A relative
3765 tooldir lets us move the installed tree as a unit.
3767 If GCC_EXEC_PREFIX is defined, then we want to add two relative
3768 directories, so that we can search both the user specified directory
3769 and the standard place. */
3771 if (!IS_ABSOLUTE_PATHNAME (tooldir_prefix))
3773 if (gcc_exec_prefix)
3775 char *gcc_exec_tooldir_prefix
3776 = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
3777 spec_version, dir_separator_str, tooldir_prefix, NULL);
3779 add_prefix (&exec_prefixes,
3780 concat (gcc_exec_tooldir_prefix, "bin",
3781 dir_separator_str, NULL),
3782 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
3783 add_prefix (&startfile_prefixes,
3784 concat (gcc_exec_tooldir_prefix, "lib",
3785 dir_separator_str, NULL),
3786 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
3789 tooldir_prefix = concat (standard_exec_prefix, spec_machine,
3790 dir_separator_str, spec_version,
3791 dir_separator_str, tooldir_prefix, NULL);
3794 add_prefix (&exec_prefixes,
3795 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3796 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
3797 add_prefix (&startfile_prefixes,
3798 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3799 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
3801 /* More prefixes are enabled in main, after we read the specs file
3802 and determine whether this is cross-compilation or not. */
3804 /* Then create the space for the vectors and scan again. */
3806 switches = ((struct switchstr *)
3807 xmalloc ((n_switches + 1) * sizeof (struct switchstr)));
3808 infiles = (struct infile *) xmalloc ((n_infiles + 1) * sizeof (struct infile));
3811 last_language_n_infiles = -1;
3813 /* This, time, copy the text of each switch and store a pointer
3814 to the copy in the vector of switches.
3815 Store all the infiles in their vector. */
3817 for (i = 1; i < argc; i++)
3819 /* Just skip the switches that were handled by the preceding loop. */
3820 #ifdef MODIFY_TARGET_NAME
3821 is_modify_target_name = 0;
3823 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3824 if (! strcmp (argv[i], modify_target[j].sw))
3825 is_modify_target_name = 1;
3827 if (is_modify_target_name)
3831 if (! strncmp (argv[i], "-Wa,", 4))
3833 else if (! strncmp (argv[i], "-Wp,", 4))
3835 else if (! strcmp (argv[i], "-pass-exit-codes"))
3837 else if (! strcmp (argv[i], "-print-search-dirs"))
3839 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3841 else if (! strncmp (argv[i], "-print-file-name=", 17))
3843 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3845 else if (! strcmp (argv[i], "-print-multi-lib"))
3847 else if (! strcmp (argv[i], "-print-multi-directory"))
3849 else if (! strcmp (argv[i], "-ftarget-help"))
3851 else if (! strcmp (argv[i], "-fhelp"))
3853 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3855 /* Compensate for the +e options to the C++ front-end;
3856 they're there simply for cfront call-compatibility. We do
3857 some magic in default_compilers to pass them down properly.
3858 Note we deliberately start at the `+' here, to avoid passing
3859 -e0 or -e1 down into the linker. */
3860 switches[n_switches].part1 = &argv[i][0];
3861 switches[n_switches].args = 0;
3862 switches[n_switches].live_cond = SWITCH_OK;
3863 switches[n_switches].validated = 0;
3866 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3869 /* Split the argument at commas. */
3871 for (j = 4; argv[i][j]; j++)
3872 if (argv[i][j] == ',')
3874 infiles[n_infiles].language = "*";
3875 infiles[n_infiles++].name
3876 = save_string (argv[i] + prev, j - prev);
3879 /* Record the part after the last comma. */
3880 infiles[n_infiles].language = "*";
3881 infiles[n_infiles++].name = argv[i] + prev;
3883 else if (strcmp (argv[i], "-Xlinker") == 0)
3885 infiles[n_infiles].language = "*";
3886 infiles[n_infiles++].name = argv[++i];
3888 else if (strcmp (argv[i], "-l") == 0)
3889 { /* POSIX allows separation of -l and the lib arg;
3890 canonicalize by concatenating -l with its arg */
3891 infiles[n_infiles].language = "*";
3892 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL);
3894 else if (strncmp (argv[i], "-l", 2) == 0)
3896 infiles[n_infiles].language = "*";
3897 infiles[n_infiles++].name = argv[i];
3899 else if (strcmp (argv[i], "-specs") == 0)
3901 else if (strncmp (argv[i], "-specs=", 7) == 0)
3903 else if (strcmp (argv[i], "-time") == 0)
3905 else if ((save_temps_flag || report_times)
3906 && strcmp (argv[i], "-pipe") == 0)
3908 /* -save-temps overrides -pipe, so that temp files are produced */
3909 if (save_temps_flag)
3910 error ("warning: -pipe ignored because -save-temps specified");
3911 /* -time overrides -pipe because we can't get correct stats when
3912 multiple children are running at once. */
3913 else if (report_times)
3914 error ("warning: -pipe ignored because -time specified");
3916 else if (strcmp (argv[i], "-###") == 0)
3918 else if (argv[i][0] == '-' && argv[i][1] != 0)
3920 const char *p = &argv[i][1];
3925 if (p[1] == 0 && i + 1 == argc)
3926 fatal ("argument to `-x' is missing");
3928 spec_lang = argv[++i];
3931 if (! strcmp (spec_lang, "none"))
3932 /* Suppress the warning if -xnone comes after the last input
3933 file, because alternate command interfaces like g++ might
3934 find it useful to place -xnone after each input file. */
3937 last_language_n_infiles = n_infiles;
3940 switches[n_switches].part1 = p;
3941 /* Deal with option arguments in separate argv elements. */
3942 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
3943 || WORD_SWITCH_TAKES_ARG (p))
3946 int n_args = WORD_SWITCH_TAKES_ARG (p);
3950 /* Count only the option arguments in separate argv elements. */
3951 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
3953 if (i + n_args >= argc)
3954 fatal ("argument to `-%s' is missing", p);
3955 switches[n_switches].args
3956 = (const char **) xmalloc ((n_args + 1) * sizeof(const char *));
3958 switches[n_switches].args[j++] = argv[++i];
3959 /* Null-terminate the vector. */
3960 switches[n_switches].args[j] = 0;
3962 else if (strchr (switches_need_spaces, c))
3964 /* On some systems, ld cannot handle some options without
3965 a space. So split the option from its argument. */
3966 char *part1 = (char *) xmalloc (2);
3970 switches[n_switches].part1 = part1;
3971 switches[n_switches].args
3972 = (const char **) xmalloc (2 * sizeof (const char *));
3973 switches[n_switches].args[0] = xstrdup (p+1);
3974 switches[n_switches].args[1] = 0;
3977 switches[n_switches].args = 0;
3979 switches[n_switches].live_cond = SWITCH_OK;
3980 switches[n_switches].validated = 0;
3981 switches[n_switches].ordering = 0;
3982 /* These are always valid, since gcc.c itself understands it. */
3983 if (!strcmp (p, "save-temps")
3984 || !strcmp (p, "static-libgcc")
3985 || !strcmp (p, "shared-libgcc"))
3986 switches[n_switches].validated = 1;
3989 char ch = switches[n_switches].part1[0];
3990 if (ch == 'V' || ch == 'b' || ch == 'B')
3991 switches[n_switches].validated = 1;
3997 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3998 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
4001 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
4003 perror_with_name (argv[i]);
4008 infiles[n_infiles].language = spec_lang;
4009 infiles[n_infiles++].name = argv[i];
4014 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4015 error ("warning: `-x %s' after last input file has no effect", spec_lang);
4017 /* Ensure we only invoke each subprocess once. */
4018 if (target_help_flag || print_help_list)
4022 /* Create a dummy input file, so that we can pass --target-help on to
4023 the various sub-processes. */
4024 infiles[0].language = "c";
4025 infiles[0].name = "help-dummy";
4027 if (target_help_flag)
4029 switches[n_switches].part1 = "--target-help";
4030 switches[n_switches].args = 0;
4031 switches[n_switches].live_cond = SWITCH_OK;
4032 switches[n_switches].validated = 0;
4037 if (print_help_list)
4039 switches[n_switches].part1 = "--help";
4040 switches[n_switches].args = 0;
4041 switches[n_switches].live_cond = SWITCH_OK;
4042 switches[n_switches].validated = 0;
4048 switches[n_switches].part1 = 0;
4049 infiles[n_infiles].name = 0;
4052 /* Store switches not filtered out by %{<S} in spec in COLLECT_GCC_OPTIONS
4053 and place that in the environment. */
4056 set_collect_gcc_options ()
4061 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4063 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4064 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4067 for (i = 0; (int) i < n_switches; i++)
4069 const char *const *args;
4072 obstack_grow (&collect_obstack, " ", 1);
4076 /* Ignore elided switches. */
4077 if (switches[i].live_cond == SWITCH_IGNORE)
4080 obstack_grow (&collect_obstack, "'-", 2);
4081 q = switches[i].part1;
4082 while ((p = strchr (q, '\'')))
4084 obstack_grow (&collect_obstack, q, p - q);
4085 obstack_grow (&collect_obstack, "'\\''", 4);
4088 obstack_grow (&collect_obstack, q, strlen (q));
4089 obstack_grow (&collect_obstack, "'", 1);
4091 for (args = switches[i].args; args && *args; args++)
4093 obstack_grow (&collect_obstack, " '", 2);
4095 while ((p = strchr (q, '\'')))
4097 obstack_grow (&collect_obstack, q, p - q);
4098 obstack_grow (&collect_obstack, "'\\''", 4);
4101 obstack_grow (&collect_obstack, q, strlen (q));
4102 obstack_grow (&collect_obstack, "'", 1);
4105 obstack_grow (&collect_obstack, "\0", 1);
4106 putenv (obstack_finish (&collect_obstack));
4109 /* Process a spec string, accumulating and running commands. */
4111 /* These variables describe the input file name.
4112 input_file_number is the index on outfiles of this file,
4113 so that the output file name can be stored for later use by %o.
4114 input_basename is the start of the part of the input file
4115 sans all directory names, and basename_length is the number
4116 of characters starting there excluding the suffix .c or whatever. */
4118 const char *input_filename;
4119 static int input_file_number;
4120 size_t input_filename_length;
4121 static int basename_length;
4122 static int suffixed_basename_length;
4123 static const char *input_basename;
4124 static const char *input_suffix;
4125 static struct stat input_stat;
4126 static int input_stat_set;
4128 /* The compiler used to process the current input file. */
4129 static struct compiler *input_file_compiler;
4131 /* These are variables used within do_spec and do_spec_1. */
4133 /* Nonzero if an arg has been started and not yet terminated
4134 (with space, tab or newline). */
4135 static int arg_going;
4137 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4138 is a temporary file name. */
4139 static int delete_this_arg;
4141 /* Nonzero means %w has been seen; the next arg to be terminated
4142 is the output file name of this compilation. */
4143 static int this_is_output_file;
4145 /* Nonzero means %s has been seen; the next arg to be terminated
4146 is the name of a library file and we should try the standard
4147 search dirs for it. */
4148 static int this_is_library_file;
4150 /* Nonzero means that the input of this command is coming from a pipe. */
4151 static int input_from_pipe;
4153 /* Nonnull means substitute this for any suffix when outputting a switches
4155 static const char *suffix_subst;
4157 /* Process the spec SPEC and run the commands specified therein.
4158 Returns 0 if the spec is successfully processed; -1 if failed. */
4168 delete_this_arg = 0;
4169 this_is_output_file = 0;
4170 this_is_library_file = 0;
4171 input_from_pipe = 0;
4172 suffix_subst = NULL;
4174 value = do_spec_1 (spec, 0, NULL);
4176 /* Force out any unfinished command.
4177 If -pipe, this forces out the last command if it ended in `|'. */
4180 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4183 set_collect_gcc_options ();
4185 if (argbuf_index > 0)
4192 /* Process the sub-spec SPEC as a portion of a larger spec.
4193 This is like processing a whole spec except that we do
4194 not initialize at the beginning and we do not supply a
4195 newline by default at the end.
4196 INSWITCH nonzero means don't process %-sequences in SPEC;
4197 in this case, % is treated as an ordinary character.
4198 This is used while substituting switches.
4199 INSWITCH nonzero also causes SPC not to terminate an argument.
4201 Value is zero unless a line was finished
4202 and the command on that line reported an error. */
4205 do_spec_1 (spec, inswitch, soft_matched_part)
4208 const char *soft_matched_part;
4210 const char *p = spec;
4217 /* If substituting a switch, treat all chars like letters.
4218 Otherwise, NL, SPC, TAB and % are special. */
4219 switch (inswitch ? 'a' : c)
4222 /* End of line: finish any pending argument,
4223 then run the pending command if one has been started. */
4226 obstack_1grow (&obstack, 0);
4227 string = obstack_finish (&obstack);
4228 if (this_is_library_file)
4229 string = find_file (string);
4230 store_arg (string, delete_this_arg, this_is_output_file);
4231 if (this_is_output_file)
4232 outfiles[input_file_number] = string;
4236 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4238 for (i = 0; i < n_switches; i++)
4239 if (!strcmp (switches[i].part1, "pipe"))
4242 /* A `|' before the newline means use a pipe here,
4243 but only if -pipe was specified.
4244 Otherwise, execute now and don't pass the `|' as an arg. */
4247 input_from_pipe = 1;
4248 switches[i].validated = 1;
4255 set_collect_gcc_options ();
4257 if (argbuf_index > 0)
4263 /* Reinitialize for a new command, and for a new argument. */
4266 delete_this_arg = 0;
4267 this_is_output_file = 0;
4268 this_is_library_file = 0;
4269 input_from_pipe = 0;
4273 /* End any pending argument. */
4276 obstack_1grow (&obstack, 0);
4277 string = obstack_finish (&obstack);
4278 if (this_is_library_file)
4279 string = find_file (string);
4280 store_arg (string, delete_this_arg, this_is_output_file);
4281 if (this_is_output_file)
4282 outfiles[input_file_number] = string;
4286 obstack_1grow (&obstack, c);
4292 /* Space or tab ends an argument if one is pending. */
4295 obstack_1grow (&obstack, 0);
4296 string = obstack_finish (&obstack);
4297 if (this_is_library_file)
4298 string = find_file (string);
4299 store_arg (string, delete_this_arg, this_is_output_file);
4300 if (this_is_output_file)
4301 outfiles[input_file_number] = string;
4303 /* Reinitialize for a new argument. */
4305 delete_this_arg = 0;
4306 this_is_output_file = 0;
4307 this_is_library_file = 0;
4314 fatal ("invalid specification! Bug in cc");
4317 obstack_grow (&obstack, input_basename, basename_length);
4322 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4327 delete_this_arg = 2;
4330 /* Dump out the directories specified with LIBRARY_PATH,
4331 followed by the absolute directories
4332 that we search for startfiles. */
4335 struct prefix_list *pl = startfile_prefixes.plist;
4336 size_t bufsize = 100;
4337 char *buffer = (char *) xmalloc (bufsize);
4340 for (; pl; pl = pl->next)
4342 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4343 /* Used on systems which record the specified -L dirs
4344 and use them to search for dynamic linking. */
4345 /* Relative directories always come from -B,
4346 and it is better not to use them for searching
4347 at run time. In particular, stage1 loses. */
4348 if (!IS_ABSOLUTE_PATHNAME (pl->prefix))
4351 /* Try subdirectory if there is one. */
4352 if (multilib_dir != NULL)
4356 if (strlen (pl->prefix) + strlen (machine_suffix)
4358 bufsize = (strlen (pl->prefix)
4359 + strlen (machine_suffix)) * 2 + 1;
4360 buffer = (char *) xrealloc (buffer, bufsize);
4361 strcpy (buffer, pl->prefix);
4362 strcat (buffer, machine_suffix);
4363 if (is_directory (buffer, multilib_dir, 1))
4365 do_spec_1 ("-L", 0, NULL);
4366 #ifdef SPACE_AFTER_L_OPTION
4367 do_spec_1 (" ", 0, NULL);
4369 do_spec_1 (buffer, 1, NULL);
4370 do_spec_1 (multilib_dir, 1, NULL);
4371 /* Make this a separate argument. */
4372 do_spec_1 (" ", 0, NULL);
4375 if (!pl->require_machine_suffix)
4377 if (is_directory (pl->prefix, multilib_dir, 1))
4379 do_spec_1 ("-L", 0, NULL);
4380 #ifdef SPACE_AFTER_L_OPTION
4381 do_spec_1 (" ", 0, NULL);
4383 do_spec_1 (pl->prefix, 1, NULL);
4384 do_spec_1 (multilib_dir, 1, NULL);
4385 /* Make this a separate argument. */
4386 do_spec_1 (" ", 0, NULL);
4392 if (is_directory (pl->prefix, machine_suffix, 1))
4394 do_spec_1 ("-L", 0, NULL);
4395 #ifdef SPACE_AFTER_L_OPTION
4396 do_spec_1 (" ", 0, NULL);
4398 do_spec_1 (pl->prefix, 1, NULL);
4399 /* Remove slash from machine_suffix. */
4400 if (strlen (machine_suffix) >= bufsize)
4401 bufsize = strlen (machine_suffix) * 2 + 1;
4402 buffer = (char *) xrealloc (buffer, bufsize);
4403 strcpy (buffer, machine_suffix);
4404 idx = strlen (buffer);
4405 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4406 buffer[idx - 1] = 0;
4407 do_spec_1 (buffer, 1, NULL);
4408 /* Make this a separate argument. */
4409 do_spec_1 (" ", 0, NULL);
4412 if (!pl->require_machine_suffix)
4414 if (is_directory (pl->prefix, "", 1))
4416 do_spec_1 ("-L", 0, NULL);
4417 #ifdef SPACE_AFTER_L_OPTION
4418 do_spec_1 (" ", 0, NULL);
4420 /* Remove slash from pl->prefix. */
4421 if (strlen (pl->prefix) >= bufsize)
4422 bufsize = strlen (pl->prefix) * 2 + 1;
4423 buffer = (char *) xrealloc (buffer, bufsize);
4424 strcpy (buffer, pl->prefix);
4425 idx = strlen (buffer);
4426 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4427 buffer[idx - 1] = 0;
4428 do_spec_1 (buffer, 1, NULL);
4429 /* Make this a separate argument. */
4430 do_spec_1 (" ", 0, NULL);
4439 /* %efoo means report an error with `foo' as error message
4440 and don't execute any more commands for this file. */
4444 while (*p != 0 && *p != '\n')
4446 buf = (char *) alloca (p - q + 1);
4447 strncpy (buf, q, p - q);
4454 /* %nfoo means report an notice with `foo' on stderr. */
4458 while (*p != 0 && *p != '\n')
4460 buf = (char *) alloca (p - q + 1);
4461 strncpy (buf, q, p - q);
4463 notice ("%s\n", buf);
4473 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is defined,
4474 and it is not a directory, and it is writable, use it.
4475 Otherwise, fall through and treat this like any other
4478 if ((!save_temps_flag)
4479 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4480 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4482 obstack_grow (&obstack, HOST_BIT_BUCKET,
4483 strlen (HOST_BIT_BUCKET));
4484 delete_this_arg = 0;
4493 struct temp_name *t;
4495 const char *suffix = p;
4496 char *saved_suffix = NULL;
4498 while (*p == '.' || ISALPHA ((unsigned char) *p))
4500 suffix_length = p - suffix;
4501 if (p[0] == '%' && p[1] == 'O')
4504 /* We don't support extra suffix characters after %O. */
4505 if (*p == '.' || ISALPHA ((unsigned char) *p))
4507 if (suffix_length == 0)
4508 suffix = TARGET_OBJECT_SUFFIX;
4512 = (char *) xmalloc (suffix_length
4513 + strlen (TARGET_OBJECT_SUFFIX));
4514 strncpy (saved_suffix, suffix, suffix_length);
4515 strcpy (saved_suffix + suffix_length,
4516 TARGET_OBJECT_SUFFIX);
4518 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4521 /* If the input_filename has the same suffix specified
4522 for the %g, %u, or %U, and -save-temps is specified,
4523 we could end up using that file as an intermediate
4524 thus clobbering the user's source file (.e.g.,
4525 gcc -save-temps foo.s would clobber foo.s with the
4526 output of cpp0). So check for this condition and
4527 generate a temp file as the intermediate. */
4529 if (save_temps_flag)
4531 temp_filename_length = basename_length + suffix_length;
4532 temp_filename = alloca (temp_filename_length + 1);
4533 strncpy ((char *) temp_filename, input_basename, basename_length);
4534 strncpy ((char *) temp_filename + basename_length, suffix,
4536 *((char *) temp_filename + temp_filename_length) = '\0';
4537 if (strcmp (temp_filename, input_filename) != 0)
4539 struct stat st_temp;
4541 /* Note, set_input() resets input_stat_set to 0. */
4542 if (input_stat_set == 0)
4544 input_stat_set = stat (input_filename, &input_stat);
4545 if (input_stat_set >= 0)
4549 /* If we have the stat for the input_filename
4550 and we can do the stat for the temp_filename
4551 then the they could still refer to the same
4552 file if st_dev/st_ino's are the same. */
4554 if (input_stat_set != 1
4555 || stat (temp_filename, &st_temp) < 0
4556 || input_stat.st_dev != st_temp.st_dev
4557 || input_stat.st_ino != st_temp.st_ino)
4559 temp_filename = save_string (temp_filename,
4560 temp_filename_length + 1);
4561 obstack_grow (&obstack, temp_filename,
4562 temp_filename_length);
4569 /* See if we already have an association of %g/%u/%U and
4571 for (t = temp_names; t; t = t->next)
4572 if (t->length == suffix_length
4573 && strncmp (t->suffix, suffix, suffix_length) == 0
4574 && t->unique == (c != 'g'))
4577 /* Make a new association if needed. %u and %j
4579 if (t == 0 || c == 'u' || c == 'j')
4583 t = (struct temp_name *) xmalloc (sizeof (struct temp_name));
4584 t->next = temp_names;
4587 t->length = suffix_length;
4590 t->suffix = saved_suffix;
4591 saved_suffix = NULL;
4594 t->suffix = save_string (suffix, suffix_length);
4595 t->unique = (c != 'g');
4596 temp_filename = make_temp_file (t->suffix);
4597 temp_filename_length = strlen (temp_filename);
4598 t->filename = temp_filename;
4599 t->filename_length = temp_filename_length;
4603 free (saved_suffix);
4605 obstack_grow (&obstack, t->filename, t->filename_length);
4606 delete_this_arg = 1;
4612 obstack_grow (&obstack, input_filename, input_filename_length);
4618 struct prefix_list *pl = include_prefixes.plist;
4620 if (gcc_exec_prefix)
4622 do_spec_1 ("-iprefix", 1, NULL);
4623 /* Make this a separate argument. */
4624 do_spec_1 (" ", 0, NULL);
4625 do_spec_1 (gcc_exec_prefix, 1, NULL);
4626 do_spec_1 (" ", 0, NULL);
4629 for (; pl; pl = pl->next)
4631 do_spec_1 ("-isystem", 1, NULL);
4632 /* Make this a separate argument. */
4633 do_spec_1 (" ", 0, NULL);
4634 do_spec_1 (pl->prefix, 1, NULL);
4635 do_spec_1 (" ", 0, NULL);
4642 int max = n_infiles;
4643 max += lang_specific_extra_outfiles;
4645 for (i = 0; i < max; i++)
4647 store_arg (outfiles[i], 0, 0);
4652 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4657 this_is_library_file = 1;
4661 this_is_output_file = 1;
4666 int cur_index = argbuf_index;
4667 /* Handle the {...} following the %W. */
4670 p = handle_braces (p + 1);
4673 /* If any args were output, mark the last one for deletion
4675 if (argbuf_index != cur_index)
4676 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
4680 /* %x{OPTION} records OPTION for %X to output. */
4686 /* Skip past the option value and make a copy. */
4691 string = save_string (p1 + 1, p - p1 - 2);
4693 /* See if we already recorded this option. */
4694 for (i = 0; i < n_linker_options; i++)
4695 if (! strcmp (string, linker_options[i]))
4701 /* This option is new; add it. */
4702 add_linker_option (string, strlen (string));
4706 /* Dump out the options accumulated previously using %x. */
4708 for (i = 0; i < n_linker_options; i++)
4710 do_spec_1 (linker_options[i], 1, NULL);
4711 /* Make each accumulated option a separate argument. */
4712 do_spec_1 (" ", 0, NULL);
4716 /* Dump out the options accumulated previously using -Wa,. */
4718 for (i = 0; i < n_assembler_options; i++)
4720 do_spec_1 (assembler_options[i], 1, NULL);
4721 /* Make each accumulated option a separate argument. */
4722 do_spec_1 (" ", 0, NULL);
4726 /* Dump out the options accumulated previously using -Wp,. */
4728 for (i = 0; i < n_preprocessor_options; i++)
4730 do_spec_1 (preprocessor_options[i], 1, NULL);
4731 /* Make each accumulated option a separate argument. */
4732 do_spec_1 (" ", 0, NULL);
4736 /* Here are digits and numbers that just process
4737 a certain constant string as a spec. */
4740 value = do_spec_1 (cc1_spec, 0, NULL);
4746 value = do_spec_1 (cc1plus_spec, 0, NULL);
4752 value = do_spec_1 (asm_spec, 0, NULL);
4758 value = do_spec_1 (asm_final_spec, 0, NULL);
4765 const char *const spec
4766 = (input_file_compiler->cpp_spec
4767 ? input_file_compiler->cpp_spec
4769 value = do_spec_1 (spec, 0, NULL);
4776 value = do_spec_1 (endfile_spec, 0, NULL);
4782 value = do_spec_1 (link_spec, 0, NULL);
4788 value = do_spec_1 (lib_spec, 0, NULL);
4794 value = do_spec_1 (libgcc_spec, 0, NULL);
4800 if (multilib_dir && strcmp (multilib_dir, ".") != 0)
4806 len = strlen (multilib_dir);
4807 obstack_blank (&obstack, len + 1);
4808 p = obstack_next_free (&obstack) - (len + 1);
4811 for (q = multilib_dir; *q ; ++q, ++p)
4812 *p = (IS_DIR_SEPARATOR (*q) ? '_' : *q);
4818 char *x = (char *) alloca (strlen (cpp_predefines) + 1);
4822 /* Copy all of the -D options in CPP_PREDEFINES into BUF. */
4826 if (! strncmp (y, "-D", 2))
4827 /* Copy the whole option. */
4828 while (*y && *y != ' ' && *y != '\t')
4830 else if (*y == ' ' || *y == '\t')
4831 /* Copy whitespace to the result. */
4833 /* Don't copy other options. */
4840 value = do_spec_1 (buf, 0, NULL);
4848 char *x = (char *) alloca (strlen (cpp_predefines) * 4 + 1);
4852 /* Copy all of CPP_PREDEFINES into BUF,
4853 but force them all into the reserved name space if they
4854 aren't already there. The reserved name space is all
4855 identifiers beginning with two underscores or with one
4856 underscore and a capital letter. We do the forcing by
4857 adding up to two underscores to the beginning and end
4858 of each symbol. e.g. mips, _mips, mips_, and _mips_ all
4863 if (! strncmp (y, "-D", 2))
4872 && ! ISUPPER ((unsigned char) *(y + 1))))
4874 /* Stick __ at front of macro name. */
4878 /* Arrange to stick __ at the end as well. */
4882 /* Copy the macro name. */
4883 while (*y && *y != '=' && *y != ' ' && *y != '\t')
4896 /* Copy the value given, if any. */
4897 while (*y && *y != ' ' && *y != '\t')
4900 else if (*y == ' ' || *y == '\t')
4901 /* Copy whitespace to the result. */
4903 /* Don't copy -A options */
4909 /* Copy all of CPP_PREDEFINES into BUF,
4910 but put __ after every -D. */
4914 if (! strncmp (y, "-D", 2))
4920 && ! ISUPPER ((unsigned char) *(y + 1))))
4922 /* Stick -D__ at front of macro name. */
4929 /* Copy the macro name. */
4930 while (*y && *y != '=' && *y != ' ' && *y != '\t')
4933 /* Copy the value given, if any. */
4934 while (*y && *y != ' ' && *y != '\t')
4939 /* Do not copy this macro - we have just done it before */
4940 while (*y && *y != ' ' && *y != '\t')
4944 else if (*y == ' ' || *y == '\t')
4945 /* Copy whitespace to the result. */
4947 /* Don't copy -A options. */
4953 /* Copy all of the -A options in CPP_PREDEFINES into BUF. */
4957 if (! strncmp (y, "-A", 2))
4958 /* Copy the whole option. */
4959 while (*y && *y != ' ' && *y != '\t')
4961 else if (*y == ' ' || *y == '\t')
4962 /* Copy whitespace to the result. */
4964 /* Don't copy other options. */
4971 value = do_spec_1 (buf, 0, NULL);
4978 value = do_spec_1 (startfile_spec, 0, NULL);
4983 /* Here we define characters other than letters and digits. */
4986 p = handle_braces (p);
4992 obstack_1grow (&obstack, '%');
4999 while (p[len] && p[len] != ' ' && p[len] != '%')
5001 suffix_subst = save_string (p - 1, len + 1);
5007 if (soft_matched_part)
5009 do_spec_1 (soft_matched_part, 1, NULL);
5010 do_spec_1 (" ", 0, NULL);
5013 /* Catch the case where a spec string contains something like
5014 '%{foo:%*}'. ie there is no * in the pattern on the left
5015 hand side of the :. */
5016 error ("spec failure: '%%*' has not been initialized by pattern match");
5019 /* Process a string found as the value of a spec given by name.
5020 This feature allows individual machine descriptions
5021 to add and use their own specs.
5022 %[...] modifies -D options the way %P does;
5023 %(...) uses the spec unmodified. */
5025 error ("warning: use of obsolete %%[ operator in specs");
5028 const char *name = p;
5029 struct spec_list *sl;
5032 /* The string after the S/P is the name of a spec that is to be
5034 while (*p && *p != ')' && *p != ']')
5037 /* See if it's in the list. */
5038 for (len = p - name, sl = specs; sl; sl = sl->next)
5039 if (sl->name_len == len && !strncmp (sl->name, name, len))
5041 name = *(sl->ptr_spec);
5043 notice ("Processing spec %c%s%c, which is '%s'\n",
5044 c, sl->name, (c == '(') ? ')' : ']', name);
5053 value = do_spec_1 (name, 0, NULL);
5059 char *x = (char *) alloca (strlen (name) * 2 + 1);
5061 const char *y = name;
5064 /* Copy all of NAME into BUF, but put __ after
5065 every -D and at the end of each arg. */
5068 if (! strncmp (y, "-D", 2))
5079 && (*y == ' ' || *y == '\t' || *y == '='
5080 || *y == '}' || *y == 0))
5093 value = do_spec_1 (buf, 0, NULL);
5099 /* Discard the closing paren or bracket. */
5107 int c1 = *p++; /* Select first or second version number. */
5108 const char *v = compiler_version;
5110 static const char zeroc = '0';
5112 /* The format of the version string is
5113 ([^0-9]*-)?[0-9]+[.][0-9]+([.][0-9]+)?([- ].*)? */
5115 /* Ignore leading non-digits. i.e. "foo-" in "foo-2.7.2". */
5116 while (! ISDIGIT (*v))
5118 if (v > compiler_version && v[-1] != '-')
5121 /* If desired, advance to second version number. */
5124 /* Set V after the first period. */
5125 while (ISDIGIT (*v))
5132 /* If desired, advance to third version number.
5133 But don't complain if it's not present */
5136 /* Set V after the second period. */
5137 while (ISDIGIT (*v))
5139 if ((*v != 0) && (*v != ' ') && (*v != '.') && (*v != '-'))
5145 /* Set Q at the next period or at the end. */
5147 while (ISDIGIT (*q))
5149 if (*q != 0 && q > v && *q != ' ' && *q != '.' && *q != '-')
5153 /* Put that part into the command. */
5154 obstack_grow (&obstack, v, q - v);
5156 /* Default to "0" */
5157 obstack_grow (&obstack, &zeroc, 1);
5163 if (input_from_pipe)
5164 do_spec_1 ("-", 0, NULL);
5168 error ("spec failure: unrecognized spec option '%c'", c);
5174 /* Backslash: treat next character as ordinary. */
5179 /* Ordinary character: put it into the current argument. */
5180 obstack_1grow (&obstack, c);
5184 /* End of string. */
5188 /* Return 0 if we call do_spec_1 and that returns -1. */
5194 const char *filter, *body = NULL, *endbody = NULL;
5196 int true_once = 0; /* If, in %{a|b:d}, at least one of a,b was seen. */
5199 int include_blanks = 1;
5200 int elide_switch = 0;
5205 /* A '^' after the open-brace means to not give blanks before args. */
5212 /* A `|' after the open-brace means,
5213 if the test fails, output a single minus sign rather than nothing.
5214 This is used in %{|!pipe:...}. */
5221 /* A `<' after the open-brace means that the switch should be
5222 removed from the command-line. */
5228 negate = suffix = 0;
5231 /* A `!' after the open-brace negates the condition:
5232 succeed if the specified switch is not present. */
5236 /* A `.' after the open-brace means test against the current suffix. */
5245 if (elide_switch && (negate || pipe_p || suffix))
5247 /* It doesn't make sense to mix elision with other flags. We
5248 could fatal() here, but the standard seems to be to abort. */
5254 while (*p != ':' && *p != '}' && *p != '|' && *p != '&')
5257 if (*p == '|' && (pipe_p || ordered))
5262 if (*p != '}' && *p != '&')
5278 fatal ("mismatched braces in specs");
5284 body = p, endbody = p + 1;
5289 int found = (input_suffix != 0
5290 && (long) strlen (input_suffix) == (long) (p - filter)
5291 && strncmp (input_suffix, filter, p - filter) == 0);
5297 && do_spec_1 (save_string (body, endbody-body-1), 0, NULL) < 0)
5300 else if (p[-1] == '*' && (p[0] == '}' || p[0] == '&'))
5302 /* Substitute all matching switches as separate args. */
5305 for (i = 0; i < n_switches; i++)
5306 if (!strncmp (switches[i].part1, filter, p - 1 - filter)
5307 && check_live_switch (i, p - 1 - filter))
5311 switches[i].live_cond = SWITCH_IGNORE;
5312 switches[i].validated = 1;
5315 ordered = 1, switches[i].ordering = 1;
5320 /* Test for presence of the specified switch. */
5324 /* If name specified ends in *, as in {x*:...},
5325 check for %* and handle that case. */
5326 if (p[-1] == '*' && !negate)
5329 const char *r = body;
5331 /* First see whether we have %*. */
5335 if (*r == '%' && r[1] == '*')
5339 /* If we do, handle that case. */
5342 /* Substitute all matching switches as separate args.
5343 But do this by substituting for %*
5344 in the text that follows the colon. */
5346 unsigned hard_match_len = p - filter - 1;
5347 char *string = save_string (body, endbody - body - 1);
5349 for (i = 0; i < n_switches; i++)
5350 if (!strncmp (switches[i].part1, filter, hard_match_len)
5351 && check_live_switch (i, -1))
5353 do_spec_1 (string, 0, &switches[i].part1[hard_match_len]);
5354 /* Pass any arguments this switch has. */
5355 give_switch (i, 1, 1);
5356 suffix_subst = NULL;
5359 /* We didn't match. Try again. */
5366 /* If name specified ends in *, as in {x*:...},
5367 check for presence of any switch name starting with x. */
5370 for (i = 0; i < n_switches; i++)
5372 unsigned hard_match_len = p - filter - 1;
5374 if (!strncmp (switches[i].part1, filter, hard_match_len)
5375 && check_live_switch (i, hard_match_len))
5382 /* Otherwise, check for presence of exact name specified. */
5385 for (i = 0; i < n_switches; i++)
5387 if (!strncmp (switches[i].part1, filter, p - filter)
5388 && switches[i].part1[p - filter] == 0
5389 && check_live_switch (i, -1))
5397 /* If it is as desired (present for %{s...}, absent for %{!s...})
5398 then substitute either the switch or the specified
5399 conditional text. */
5400 if (present != negate)
5404 switches[i].live_cond = SWITCH_IGNORE;
5405 switches[i].validated = 1;
5407 else if (ordered || *p == '&')
5408 ordered = 1, switches[i].ordering = 1;
5410 give_switch (i, 0, include_blanks);
5412 /* Even if many alternatives are matched, only output once. */
5417 /* Here if a %{|...} conditional fails: output a minus sign,
5418 which means "standard output" or "standard input". */
5419 do_spec_1 ("-", 0, NULL);
5424 /* We didn't match; try again. */
5431 goto next_ampersand;
5437 /* Doing this set of switches later preserves their command-line
5438 ordering. This is needed for e.g. -U, -D and -A. */
5439 for (i = 0; i < n_switches; i++)
5440 if (switches[i].ordering == 1)
5442 switches[i].ordering = 0;
5443 give_switch (i, 0, include_blanks);
5446 /* Process the spec just once, regardless of match count. */
5449 if (do_spec_1 (save_string (body, endbody - body - 1),
5457 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5458 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5459 spec, or -1 if either exact match or %* is used.
5461 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5462 whose value does not begin with "no-" is obsoleted by the same value
5463 with the "no-", similarly for a switch with the "no-" prefix. */
5466 check_live_switch (switchnum, prefix_length)
5470 const char *name = switches[switchnum].part1;
5473 /* In the common case of {<at-most-one-letter>*}, a negating
5474 switch would always match, so ignore that case. We will just
5475 send the conflicting switches to the compiler phase. */
5476 if (prefix_length >= 0 && prefix_length <= 1)
5479 /* If we already processed this switch and determined if it was
5480 live or not, return our past determination. */
5481 if (switches[switchnum].live_cond != 0)
5482 return switches[switchnum].live_cond > 0;
5484 /* Now search for duplicate in a manner that depends on the name. */
5488 for (i = switchnum + 1; i < n_switches; i++)
5489 if (switches[i].part1[0] == 'O')
5491 switches[switchnum].validated = 1;
5492 switches[switchnum].live_cond = SWITCH_FALSE;
5497 case 'W': case 'f': case 'm':
5498 if (! strncmp (name + 1, "no-", 3))
5500 /* We have Xno-YYY, search for XYYY. */
5501 for (i = switchnum + 1; i < n_switches; i++)
5502 if (switches[i].part1[0] == name[0]
5503 && ! strcmp (&switches[i].part1[1], &name[4]))
5505 switches[switchnum].validated = 1;
5506 switches[switchnum].live_cond = SWITCH_FALSE;
5512 /* We have XYYY, search for Xno-YYY. */
5513 for (i = switchnum + 1; i < n_switches; i++)
5514 if (switches[i].part1[0] == name[0]
5515 && switches[i].part1[1] == 'n'
5516 && switches[i].part1[2] == 'o'
5517 && switches[i].part1[3] == '-'
5518 && !strcmp (&switches[i].part1[4], &name[1]))
5520 switches[switchnum].validated = 1;
5521 switches[switchnum].live_cond = SWITCH_FALSE;
5528 /* Otherwise the switch is live. */
5529 switches[switchnum].live_cond = SWITCH_LIVE;
5533 /* Pass a switch to the current accumulating command
5534 in the same form that we received it.
5535 SWITCHNUM identifies the switch; it is an index into
5536 the vector of switches gcc received, which is `switches'.
5537 This cannot fail since it never finishes a command line.
5539 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument.
5541 If INCLUDE_BLANKS is nonzero, then we include blanks before each argument
5545 give_switch (switchnum, omit_first_word, include_blanks)
5547 int omit_first_word;
5550 if (switches[switchnum].live_cond == SWITCH_IGNORE)
5553 if (!omit_first_word)
5555 do_spec_1 ("-", 0, NULL);
5556 do_spec_1 (switches[switchnum].part1, 1, NULL);
5559 if (switches[switchnum].args != 0)
5562 for (p = switches[switchnum].args; *p; p++)
5564 const char *arg = *p;
5567 do_spec_1 (" ", 0, NULL);
5570 unsigned length = strlen (arg);
5573 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5574 if (arg[length] == '.')
5576 ((char *)arg)[length] = 0;
5580 do_spec_1 (arg, 1, NULL);
5582 ((char *)arg)[length] = '.';
5583 do_spec_1 (suffix_subst, 1, NULL);
5586 do_spec_1 (arg, 1, NULL);
5590 do_spec_1 (" ", 0, NULL);
5591 switches[switchnum].validated = 1;
5594 /* Search for a file named NAME trying various prefixes including the
5595 user's -B prefix and some standard ones.
5596 Return the absolute file name found. If nothing is found, return NAME. */
5604 /* Try multilib_dir if it is defined. */
5605 if (multilib_dir != NULL)
5607 const char *const try = ACONCAT ((multilib_dir, dir_separator_str, name, NULL));
5609 newname = find_a_file (&startfile_prefixes, try, R_OK);
5611 /* If we don't find it in the multi library dir, then fall
5612 through and look for it in the normal places. */
5613 if (newname != NULL)
5617 newname = find_a_file (&startfile_prefixes, name, R_OK);
5618 return newname ? newname : name;
5621 /* Determine whether a directory exists. If LINKER, return 0 for
5622 certain fixed names not needed by the linker. If not LINKER, it is
5623 only important to return 0 if the host machine has a small ARG_MAX
5627 is_directory (path1, path2, linker)
5632 int len1 = strlen (path1);
5633 int len2 = strlen (path2);
5634 char *path = (char *) alloca (3 + len1 + len2);
5638 #ifndef SMALL_ARG_MAX
5643 /* Construct the path from the two parts. Ensure the string ends with "/.".
5644 The resulting path will be a directory even if the given path is a
5646 memcpy (path, path1, len1);
5647 memcpy (path + len1, path2, len2);
5648 cp = path + len1 + len2;
5649 if (!IS_DIR_SEPARATOR (cp[-1]))
5650 *cp++ = DIR_SEPARATOR;
5654 /* Exclude directories that the linker is known to search. */
5657 && strcmp (path, concat (dir_separator_str, "lib",
5658 dir_separator_str, ".", NULL)) == 0)
5660 && strcmp (path, concat (dir_separator_str, "usr",
5661 dir_separator_str, "lib",
5662 dir_separator_str, ".", NULL)) == 0)))
5665 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5668 /* Set up the various global variables to indicate that we're processing
5669 the input file named FILENAME. */
5672 set_input (filename)
5673 const char *filename;
5677 input_filename = filename;
5678 input_filename_length = strlen (input_filename);
5680 input_basename = input_filename;
5681 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
5682 /* Skip drive name so 'x:foo' is handled properly. */
5683 if (input_basename[1] == ':')
5684 input_basename += 2;
5686 for (p = input_basename; *p; p++)
5687 if (IS_DIR_SEPARATOR (*p))
5688 input_basename = p + 1;
5690 /* Find a suffix starting with the last period,
5691 and set basename_length to exclude that suffix. */
5692 basename_length = strlen (input_basename);
5693 suffixed_basename_length = basename_length;
5694 p = input_basename + basename_length;
5695 while (p != input_basename && *p != '.')
5697 if (*p == '.' && p != input_basename)
5699 basename_length = p - input_basename;
5700 input_suffix = p + 1;
5705 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5706 we will need to do a stat on the input_filename. The
5707 INPUT_STAT_SET signals that the stat is needed. */
5711 /* On fatal signals, delete all the temporary files. */
5714 fatal_error (signum)
5717 signal (signum, SIG_DFL);
5718 delete_failure_queue ();
5719 delete_temp_files ();
5720 /* Get the same signal again, this time not handled,
5721 so its normal effect occurs. */
5722 kill (getpid (), signum);
5725 extern int main PARAMS ((int, const char *const *));
5730 const char *const *argv;
5734 int linker_was_run = 0;
5735 char *explicit_link_files;
5738 struct user_specs *uptr;
5740 p = argv[0] + strlen (argv[0]);
5741 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
5745 xmalloc_set_program_name (programname);
5747 #ifdef GCC_DRIVER_HOST_INITIALIZATION
5748 /* Perform host dependent initialization when needed. */
5749 GCC_DRIVER_HOST_INITIALIZATION;
5752 gcc_init_libintl ();
5754 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
5755 signal (SIGINT, fatal_error);
5757 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
5758 signal (SIGHUP, fatal_error);
5760 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
5761 signal (SIGTERM, fatal_error);
5763 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
5764 signal (SIGPIPE, fatal_error);
5767 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
5768 receive the signal. A different setting is inheritable */
5769 signal (SIGCHLD, SIG_DFL);
5773 argbuf = (const char **) xmalloc (argbuf_length * sizeof (const char *));
5775 obstack_init (&obstack);
5777 /* Build multilib_select, et. al from the separate lines that make up each
5778 multilib selection. */
5780 const char *const *q = multilib_raw;
5783 obstack_init (&multilib_obstack);
5784 while ((p = *q++) != (char *) 0)
5785 obstack_grow (&multilib_obstack, p, strlen (p));
5787 obstack_1grow (&multilib_obstack, 0);
5788 multilib_select = obstack_finish (&multilib_obstack);
5790 q = multilib_matches_raw;
5791 while ((p = *q++) != (char *) 0)
5792 obstack_grow (&multilib_obstack, p, strlen (p));
5794 obstack_1grow (&multilib_obstack, 0);
5795 multilib_matches = obstack_finish (&multilib_obstack);
5797 q = multilib_exclusions_raw;
5798 while ((p = *q++) != (char *) 0)
5799 obstack_grow (&multilib_obstack, p, strlen (p));
5801 obstack_1grow (&multilib_obstack, 0);
5802 multilib_exclusions = obstack_finish (&multilib_obstack);
5805 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
5808 obstack_1grow (&multilib_obstack, ' ');
5809 obstack_grow (&multilib_obstack,
5810 multilib_defaults_raw[i],
5811 strlen (multilib_defaults_raw[i]));
5815 obstack_1grow (&multilib_obstack, 0);
5816 multilib_defaults = obstack_finish (&multilib_obstack);
5819 /* Set up to remember the pathname of gcc and any options
5820 needed for collect. We use argv[0] instead of programname because
5821 we need the complete pathname. */
5822 obstack_init (&collect_obstack);
5823 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
5824 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
5825 putenv (obstack_finish (&collect_obstack));
5827 #ifdef INIT_ENVIRONMENT
5828 /* Set up any other necessary machine specific environment variables. */
5829 putenv (INIT_ENVIRONMENT);
5832 /* Make a table of what switches there are (switches, n_switches).
5833 Make a table of specified input files (infiles, n_infiles).
5834 Decode switches that are handled locally. */
5836 process_command (argc, argv);
5838 /* Initialize the vector of specs to just the default.
5839 This means one element containing 0s, as a terminator. */
5841 compilers = (struct compiler *) xmalloc (sizeof default_compilers);
5842 memcpy ((char *) compilers, (char *) default_compilers,
5843 sizeof default_compilers);
5844 n_compilers = n_default_compilers;
5846 /* Read specs from a file if there is one. */
5848 machine_suffix = concat (spec_machine, dir_separator_str,
5849 spec_version, dir_separator_str, NULL);
5850 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
5852 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK);
5853 /* Read the specs file unless it is a default one. */
5854 if (specs_file != 0 && strcmp (specs_file, "specs"))
5855 read_specs (specs_file, TRUE);
5859 /* We need to check standard_exec_prefix/just_machine_suffix/specs
5860 for any override of as, ld and libraries. */
5861 specs_file = (char *) alloca (strlen (standard_exec_prefix)
5862 + strlen (just_machine_suffix)
5863 + sizeof ("specs"));
5865 strcpy (specs_file, standard_exec_prefix);
5866 strcat (specs_file, just_machine_suffix);
5867 strcat (specs_file, "specs");
5868 if (access (specs_file, R_OK) == 0)
5869 read_specs (specs_file, TRUE);
5871 /* If not cross-compiling, look for startfiles in the standard places. */
5872 if (*cross_compile == '0')
5874 if (*md_exec_prefix)
5876 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
5877 PREFIX_PRIORITY_LAST, 0, NULL);
5878 add_prefix (&startfile_prefixes, md_exec_prefix, "GCC",
5879 PREFIX_PRIORITY_LAST, 0, NULL);
5882 if (*md_startfile_prefix)
5883 add_prefix (&startfile_prefixes, md_startfile_prefix, "GCC",
5884 PREFIX_PRIORITY_LAST, 0, NULL);
5886 if (*md_startfile_prefix_1)
5887 add_prefix (&startfile_prefixes, md_startfile_prefix_1, "GCC",
5888 PREFIX_PRIORITY_LAST, 0, NULL);
5890 /* If standard_startfile_prefix is relative, base it on
5891 standard_exec_prefix. This lets us move the installed tree
5892 as a unit. If GCC_EXEC_PREFIX is defined, base
5893 standard_startfile_prefix on that as well. */
5894 if (IS_ABSOLUTE_PATHNAME (standard_startfile_prefix))
5895 add_prefix (&startfile_prefixes, standard_startfile_prefix, "BINUTILS",
5896 PREFIX_PRIORITY_LAST, 0, NULL);
5899 if (gcc_exec_prefix)
5900 add_prefix (&startfile_prefixes,
5901 concat (gcc_exec_prefix, machine_suffix,
5902 standard_startfile_prefix, NULL),
5903 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
5904 add_prefix (&startfile_prefixes,
5905 concat (standard_exec_prefix,
5907 standard_startfile_prefix, NULL),
5908 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
5911 add_prefix (&startfile_prefixes, standard_startfile_prefix_1,
5912 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
5913 add_prefix (&startfile_prefixes, standard_startfile_prefix_2,
5914 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
5915 #if 0 /* Can cause surprises, and one can use -B./ instead. */
5916 add_prefix (&startfile_prefixes, "./", NULL,
5917 PREFIX_PRIORITY_LAST, 1, NULL);
5922 if (!IS_ABSOLUTE_PATHNAME (standard_startfile_prefix)
5924 add_prefix (&startfile_prefixes,
5925 concat (gcc_exec_prefix, machine_suffix,
5926 standard_startfile_prefix, NULL),
5927 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
5930 /* Process any user specified specs in the order given on the command
5932 for (uptr = user_specs_head; uptr; uptr = uptr->next)
5934 char *filename = find_a_file (&startfile_prefixes, uptr->filename, R_OK);
5935 read_specs (filename ? filename : uptr->filename, FALSE);
5938 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
5939 if (gcc_exec_prefix)
5940 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
5941 spec_version, dir_separator_str, NULL);
5943 /* Now we have the specs.
5944 Set the `valid' bits for switches that match anything in any spec. */
5946 validate_all_switches ();
5948 /* Now that we have the switches and the specs, set
5949 the subdirectory based on the options. */
5950 set_multilib_dir ();
5952 /* Warn about any switches that no pass was interested in. */
5954 for (i = 0; (int) i < n_switches; i++)
5955 if (! switches[i].validated)
5956 error ("unrecognized option `-%s'", switches[i].part1);
5958 /* Obey some of the options. */
5960 if (print_search_dirs)
5962 printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix);
5963 printf (_("programs: %s\n"), build_search_list (&exec_prefixes, "", 0));
5964 printf (_("libraries: %s\n"), build_search_list (&startfile_prefixes, "", 0));
5968 if (print_file_name)
5970 printf ("%s\n", find_file (print_file_name));
5974 if (print_prog_name)
5976 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK);
5977 printf ("%s\n", (newname ? newname : print_prog_name));
5981 if (print_multi_lib)
5983 print_multilib_info ();
5987 if (print_multi_directory)
5989 if (multilib_dir == NULL)
5992 printf ("%s\n", multilib_dir);
5996 if (target_help_flag)
5998 /* Print if any target specific options. */
6000 /* We do not exit here. Instead we have created a fake input file
6001 called 'target-dummy' which needs to be compiled, and we pass this
6002 on to the various sub-processes, along with the --target-help
6006 if (print_help_list)
6012 printf (_("\nFor bug reporting instructions, please see:\n"));
6013 printf ("%s.\n", GCCBUGURL);
6018 /* We do not exit here. Instead we have created a fake input file
6019 called 'help-dummy' which needs to be compiled, and we pass this
6020 on the various sub-processes, along with the --help switch. */
6028 notice ("Configured with: %s\n", configuration_arguments);
6030 #ifdef THREAD_MODEL_SPEC
6031 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6032 but there's no point in doing all this processing just to get
6033 thread_model back. */
6034 obstack_init (&obstack);
6035 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6036 obstack_1grow (&obstack, '\0');
6037 thrmod = obstack_finish (&obstack);
6039 thrmod = thread_model;
6042 notice ("Thread model: %s\n", thrmod);
6044 /* compiler_version is truncated at the first space when initialized
6045 from version string, so truncate version_string at the first space
6046 before comparing. */
6047 for (n = 0; version_string[n]; n++)
6048 if (version_string[n] == ' ')
6051 if (! strncmp (version_string, compiler_version, n)
6052 && compiler_version[n] == 0)
6053 notice ("gcc version %s\n", version_string);
6055 notice ("gcc driver version %s executing gcc version %s\n",
6056 version_string, compiler_version);
6062 if (n_infiles == added_libraries)
6063 fatal ("no input files");
6065 /* Make a place to record the compiler output file names
6066 that correspond to the input files. */
6069 i += lang_specific_extra_outfiles;
6070 outfiles = (const char **) xcalloc (i, sizeof (char *));
6072 /* Record which files were specified explicitly as link input. */
6074 explicit_link_files = xcalloc (1, n_infiles);
6076 for (i = 0; (int) i < n_infiles; i++)
6078 int this_file_error = 0;
6080 /* Tell do_spec what to substitute for %i. */
6082 input_file_number = i;
6083 set_input (infiles[i].name);
6085 /* Use the same thing in %o, unless cp->spec says otherwise. */
6087 outfiles[i] = input_filename;
6089 /* Figure out which compiler from the file's suffix. */
6092 = lookup_compiler (infiles[i].name, input_filename_length,
6093 infiles[i].language);
6095 if (input_file_compiler)
6097 /* Ok, we found an applicable compiler. Run its spec. */
6099 if (input_file_compiler->spec[0] == '#')
6101 error ("%s: %s compiler not installed on this system",
6102 input_filename, &input_file_compiler->spec[1]);
6103 this_file_error = 1;
6107 value = do_spec (input_file_compiler->spec);
6109 this_file_error = 1;
6113 /* If this file's name does not contain a recognized suffix,
6114 record it as explicit linker input. */
6117 explicit_link_files[i] = 1;
6119 /* Clear the delete-on-failure queue, deleting the files in it
6120 if this compilation failed. */
6122 if (this_file_error)
6124 delete_failure_queue ();
6127 /* If this compilation succeeded, don't delete those files later. */
6128 clear_failure_queue ();
6131 /* Reset the output file name to the first input file name, for use
6132 with %b in LINK_SPEC on a target that prefers not to emit a.out
6135 set_input (infiles[0].name);
6137 if (error_count == 0)
6139 /* Make sure INPUT_FILE_NUMBER points to first available open
6141 input_file_number = n_infiles;
6142 if (lang_specific_pre_link ())
6146 /* Run ld to link all the compiler output files. */
6148 if (error_count == 0)
6150 int tmp = execution_count;
6152 /* We'll use ld if we can't find collect2. */
6153 if (! strcmp (linker_name_spec, "collect2"))
6155 char *s = find_a_file (&exec_prefixes, "collect2", X_OK);
6157 linker_name_spec = "ld";
6159 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6161 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH");
6162 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV);
6164 value = do_spec (link_command_spec);
6167 linker_was_run = (tmp != execution_count);
6170 /* If options said don't run linker,
6171 complain about input files to be given to the linker. */
6173 if (! linker_was_run && error_count == 0)
6174 for (i = 0; (int) i < n_infiles; i++)
6175 if (explicit_link_files[i])
6176 error ("%s: linker input file unused because linking not done",
6179 /* Delete some or all of the temporary files we made. */
6182 delete_failure_queue ();
6183 delete_temp_files ();
6185 if (print_help_list)
6187 printf (("\nFor bug reporting instructions, please see:\n"));
6188 printf ("%s\n", GCCBUGURL);
6191 return (signal_count != 0 ? 2
6192 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
6196 /* Find the proper compilation spec for the file name NAME,
6197 whose length is LENGTH. LANGUAGE is the specified language,
6198 or 0 if this file is to be passed to the linker. */
6200 static struct compiler *
6201 lookup_compiler (name, length, language)
6204 const char *language;
6206 struct compiler *cp;
6208 /* If this was specified by the user to be a linker input, indicate that. */
6209 if (language != 0 && language[0] == '*')
6212 /* Otherwise, look for the language, if one is spec'd. */
6215 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6216 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6219 error ("language %s not recognized", language);
6223 /* Look for a suffix. */
6224 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6226 if (/* The suffix `-' matches only the file name `-'. */
6227 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6228 || (strlen (cp->suffix) < length
6229 /* See if the suffix matches the end of NAME. */
6230 && !strcmp (cp->suffix,
6231 name + length - strlen (cp->suffix))
6236 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6237 /* look again, but case-insensitively this time. */
6239 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6241 if (/* The suffix `-' matches only the file name `-'. */
6242 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6243 || (strlen (cp->suffix) < length
6244 /* See if the suffix matches the end of NAME. */
6245 && ((!strcmp (cp->suffix,
6246 name + length - strlen (cp->suffix))
6247 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6248 && !strcasecmp (cp->suffix,
6249 name + length - strlen (cp->suffix)))
6255 if (cp >= compilers)
6257 if (cp->spec[0] != '@')
6258 /* A non-alias entry: return it. */
6261 /* An alias entry maps a suffix to a language.
6262 Search for the language; pass 0 for NAME and LENGTH
6263 to avoid infinite recursion if language not found. */
6264 return lookup_compiler (NULL, 0, cp->spec + 1);
6270 save_string (s, len)
6274 char *result = xmalloc (len + 1);
6276 memcpy (result, s, len);
6282 pfatal_with_name (name)
6285 perror_with_name (name);
6286 delete_temp_files ();
6291 perror_with_name (name)
6294 error ("%s: %s", name, xstrerror (errno));
6298 pfatal_pexecute (errmsg_fmt, errmsg_arg)
6299 const char *errmsg_fmt;
6300 const char *errmsg_arg;
6304 int save_errno = errno;
6306 /* Space for trailing '\0' is in %s. */
6307 char *msg = xmalloc (strlen (errmsg_fmt) + strlen (errmsg_arg));
6308 sprintf (msg, errmsg_fmt, errmsg_arg);
6314 pfatal_with_name (errmsg_fmt);
6317 /* Output an error message and exit */
6322 fatal ("internal gcc abort");
6325 /* Output an error message and exit */
6328 fatal VPARAMS ((const char *msgid, ...))
6330 VA_OPEN (ap, msgid);
6331 VA_FIXEDARG (ap, const char *, msgid);
6333 fprintf (stderr, "%s: ", programname);
6334 vfprintf (stderr, _(msgid), ap);
6336 fprintf (stderr, "\n");
6337 delete_temp_files ();
6342 error VPARAMS ((const char *msgid, ...))
6344 VA_OPEN (ap, msgid);
6345 VA_FIXEDARG (ap, const char *, msgid);
6347 fprintf (stderr, "%s: ", programname);
6348 vfprintf (stderr, _(msgid), ap);
6351 fprintf (stderr, "\n");
6355 notice VPARAMS ((const char *msgid, ...))
6357 VA_OPEN (ap, msgid);
6358 VA_FIXEDARG (ap, const char *, msgid);
6360 vfprintf (stderr, _(msgid), ap);
6365 validate_all_switches ()
6367 struct compiler *comp;
6370 struct spec_list *spec;
6372 for (comp = compilers; comp->spec; comp++)
6376 if (c == '%' && (*p == '{' || (*p == 'W' && *++p == '{')))
6377 /* We have a switch spec. */
6378 validate_switches (p + 1);
6381 /* Look through the linked list of specs read from the specs file. */
6382 for (spec = specs; spec; spec = spec->next)
6384 p = *(spec->ptr_spec);
6386 if (c == '%' && (*p == '{' || (*p == 'W' && *++p == '{')))
6387 /* We have a switch spec. */
6388 validate_switches (p + 1);
6391 p = link_command_spec;
6393 if (c == '%' && (*p == '{' || (*p == 'W' && *++p == '{')))
6394 /* We have a switch spec. */
6395 validate_switches (p + 1);
6398 /* Look at the switch-name that comes after START
6399 and mark as valid all supplied switches that match it. */
6402 validate_switches (start)
6405 const char *p = start;
6422 while (*p != ':' && *p != '}' && *p != '|' && *p != '&')
6427 else if (p[-1] == '*')
6429 /* Mark all matching switches as valid. */
6430 for (i = 0; i < n_switches; i++)
6431 if (!strncmp (switches[i].part1, filter, p - filter - 1))
6432 switches[i].validated = 1;
6436 /* Mark an exact matching switch as valid. */
6437 for (i = 0; i < n_switches; i++)
6439 if (!strncmp (switches[i].part1, filter, p - filter)
6440 && switches[i].part1[p - filter] == 0)
6441 switches[i].validated = 1;
6445 if (*p++ == '|' || p[-1] == '&')
6449 /* Check whether a particular argument was used. The first time we
6450 canonicalize the switches to keep only the ones we care about. */
6460 const char *replace;
6465 static struct mswitchstr *mswitches;
6466 static int n_mswitches;
6471 struct mswitchstr *matches;
6475 /* Break multilib_matches into the component strings of string
6476 and replacement string. */
6477 for (q = multilib_matches; *q != '\0'; q++)
6482 (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
6484 q = multilib_matches;
6494 matches[i].len = q - matches[i].str;
6496 matches[i].replace = ++q;
6497 while (*q != ';' && *q != '\0')
6503 matches[i].rep_len = q - matches[i].replace;
6509 /* Now build a list of the replacement string for switches that we care
6510 about. Make sure we allocate at least one entry. This prevents
6511 xmalloc from calling fatal, and prevents us from re-executing this
6514 = (struct mswitchstr *) xmalloc ((sizeof (struct mswitchstr))
6515 * (n_switches ? n_switches : 1));
6516 for (i = 0; i < n_switches; i++)
6518 int xlen = strlen (switches[i].part1);
6519 for (j = 0; j < cnt; j++)
6520 if (xlen == matches[j].len
6521 && ! strncmp (switches[i].part1, matches[j].str, xlen))
6523 mswitches[n_mswitches].str = matches[j].replace;
6524 mswitches[n_mswitches].len = matches[j].rep_len;
6525 mswitches[n_mswitches].replace = (char *) 0;
6526 mswitches[n_mswitches].rep_len = 0;
6533 for (i = 0; i < n_mswitches; i++)
6534 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
6541 default_arg (p, len)
6545 const char *start, *end;
6547 for (start = multilib_defaults; *start != '\0'; start = end + 1)
6549 while (*start == ' ' || *start == '\t')
6555 for (end = start + 1; *end != ' ' && *end != '\t' && *end != '\0'; end++)
6558 if ((end - start) == len && strncmp (p, start, len) == 0)
6568 /* Work out the subdirectory to use based on the options. The format of
6569 multilib_select is a list of elements. Each element is a subdirectory
6570 name followed by a list of options followed by a semicolon. The format
6571 of multilib_exclusions is the same, but without the preceding
6572 directory. First gcc will check the exclusions, if none of the options
6573 beginning with an exclamation point are present, and all of the other
6574 options are present, then we will ignore this completely. Passing
6575 that, gcc will consider each multilib_select in turn using the same
6576 rules for matching the options. If a match is found, that subdirectory
6583 unsigned int this_path_len;
6584 const char *this_path, *this_arg;
6588 p = multilib_exclusions;
6591 /* Ignore newlines. */
6598 /* Check the arguments. */
6612 while (*p != ' ' && *p != ';')
6619 if (*this_arg != '!')
6627 ok = used_arg (this_arg, p - this_arg);
6641 p = multilib_select;
6644 /* Ignore newlines. */
6651 /* Get the initial path. */
6659 this_path_len = p - this_path;
6661 /* Check the arguments. */
6676 while (*p != ' ' && *p != ';')
6683 if (*this_arg != '!')
6691 /* If this is a default argument, we can just ignore it.
6692 This is true even if this_arg begins with '!'. Beginning
6693 with '!' does not mean that this argument is necessarily
6694 inappropriate for this library: it merely means that
6695 there is a more specific library which uses this
6696 argument. If this argument is a default, we need not
6697 consider that more specific library. */
6698 if (! default_arg (this_arg, p - this_arg))
6700 ok = used_arg (this_arg, p - this_arg);
6711 if (this_path_len != 1
6712 || this_path[0] != '.')
6714 char *new_multilib_dir = xmalloc (this_path_len + 1);
6715 strncpy (new_multilib_dir, this_path, this_path_len);
6716 new_multilib_dir[this_path_len] = '\0';
6717 multilib_dir = new_multilib_dir;
6726 /* Print out the multiple library subdirectory selection
6727 information. This prints out a series of lines. Each line looks
6728 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
6729 required. Only the desired options are printed out, the negative
6730 matches. The options are print without a leading dash. There are
6731 no spaces to make it easy to use the information in the shell.
6732 Each subdirectory is printed only once. This assumes the ordering
6733 generated by the genmultilib script. Also, we leave out ones that match
6737 print_multilib_info ()
6739 const char *p = multilib_select;
6740 const char *last_path = 0, *this_path;
6742 unsigned int last_path_len = 0;
6747 /* Ignore newlines. */
6754 /* Get the initial path. */
6763 /* Check for matches with the multilib_exclusions. We don't bother
6764 with the '!' in either list. If any of the exclusion rules match
6765 all of its options with the select rule, we skip it. */
6767 const char *e = multilib_exclusions;
6768 const char *this_arg;
6773 /* Ignore newlines. */
6780 /* Check the arguments. */
6797 while (*e != ' ' && *e != ';')
6808 int len = e - this_arg;
6815 while (*q != ' ' && *q != ';')
6822 if (! strncmp (arg, this_arg, (len < q - arg) ? q - arg : len) ||
6823 default_arg (this_arg, e - this_arg))
6853 /* If this is a duplicate, skip it. */
6854 skip = (last_path != 0 && (unsigned int) (p - this_path) == last_path_len
6855 && ! strncmp (last_path, this_path, last_path_len));
6857 last_path = this_path;
6858 last_path_len = p - this_path;
6861 /* If this directory requires any default arguments, we can skip
6862 it. We will already have printed a directory identical to
6863 this one which does not require that default argument. */
6881 while (*q != ' ' && *q != ';')
6889 && default_arg (arg, q - arg))
6904 for (p1 = last_path; p1 < p; p1++)
6923 use_arg = *p != '!';
6928 while (*p != ' ' && *p != ';')
6943 /* If there are extra options, print them now. */
6944 if (multilib_extra && *multilib_extra)
6946 int print_at = TRUE;
6949 for (q = multilib_extra; *q != '\0'; q++)