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 *const 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 int do_spec_2 PARAMS ((const char *));
303 static const char *find_file PARAMS ((const char *));
304 static int is_directory PARAMS ((const char *, const char *, int));
305 static void validate_switches PARAMS ((const char *));
306 static void validate_all_switches PARAMS ((void));
307 static void give_switch PARAMS ((int, int, int));
308 static int used_arg PARAMS ((const char *, int));
309 static int default_arg PARAMS ((const char *, int));
310 static void set_multilib_dir PARAMS ((void));
311 static void print_multilib_info PARAMS ((void));
312 static void perror_with_name PARAMS ((const char *));
313 static void pfatal_pexecute PARAMS ((const char *, const char *))
315 static void notice PARAMS ((const char *, ...))
317 static void display_help PARAMS ((void));
318 static void add_preprocessor_option PARAMS ((const char *, int));
319 static void add_assembler_option PARAMS ((const char *, int));
320 static void add_linker_option PARAMS ((const char *, int));
321 static void process_command PARAMS ((int, const char *const *));
322 static int execute PARAMS ((void));
323 static void clear_args PARAMS ((void));
324 static void fatal_error PARAMS ((int));
325 #ifdef ENABLE_SHARED_LIBGCC
326 static void init_gcc_specs PARAMS ((struct obstack *,
327 const char *, const char *,
330 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
331 static const char *convert_filename PARAMS ((const char *, int, int));
334 /* The Specs Language
336 Specs are strings containing lines, each of which (if not blank)
337 is made up of a program name, and arguments separated by spaces.
338 The program name must be exact and start from root, since no path
339 is searched and it is unreliable to depend on the current working directory.
340 Redirection of input or output is not supported; the subprograms must
341 accept filenames saying what files to read and write.
343 In addition, the specs can contain %-sequences to substitute variable text
344 or for conditional text. Here is a table of all defined %-sequences.
345 Note that spaces are not generated automatically around the results of
346 expanding these sequences; therefore, you can concatenate them together
347 or with constant text in a single argument.
349 %% substitute one % into the program name or argument.
350 %i substitute the name of the input file being processed.
351 %b substitute the basename of the input file being processed.
352 This is the substring up to (and not including) the last period
353 and not including the directory.
354 %B same as %b, but include the file suffix (text after the last period).
356 substitute a file name that has suffix SUFFIX and is chosen
357 once per compilation, and mark the argument a la %d. To reduce
358 exposure to denial-of-service attacks, the file name is now
359 chosen in a way that is hard to predict even when previously
360 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
361 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
362 the regexp "[.A-Za-z]*%O"; "%O" is treated exactly as if it
363 had been pre-processed. Previously, %g was simply substituted
364 with a file name chosen once per compilation, without regard
365 to any appended suffix (which was therefore treated just like
366 ordinary text), making such attacks more likely to succeed.
368 like %g, but generates a new temporary file name even if %uSUFFIX
371 substitutes the last file name generated with %uSUFFIX, generating a
372 new one if there is no such last file name. In the absence of any
373 %uSUFFIX, this is just like %gSUFFIX, except they don't share
374 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
375 would involve the generation of two distinct file names, one
376 for each `%g.s' and another for each `%U.s'. Previously, %U was
377 simply substituted with a file name chosen for the previous %u,
378 without regard to any appended suffix.
380 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
381 writable, and if save-temps is off; otherwise, substitute the name
382 of a temporary file, just like %u. This temporary file is not
383 meant for communication between processes, but rather as a junk
386 substitutes .SUFFIX for the suffixes of a matched switch's args when
387 it is subsequently output with %*. SUFFIX is terminated by the next
389 %d marks the argument containing or following the %d as a
390 temporary file name, so that that file will be deleted if CC exits
391 successfully. Unlike %g, this contributes no text to the argument.
392 %w marks the argument containing or following the %w as the
393 "output file" of this compilation. This puts the argument
394 into the sequence of arguments that %o will substitute later.
396 like %{...} but mark last argument supplied within
397 as a file to be deleted on failure.
398 %o substitutes the names of all the output files, with spaces
399 automatically placed around them. You should write spaces
400 around the %o as well or the results are undefined.
401 %o is for use in the specs for running the linker.
402 Input files whose names have no recognized suffix are not compiled
403 at all, but they are included among the output files, so they will
405 %O substitutes the suffix for object files. Note that this is
406 handled specially when it immediately follows %g, %u, or %U
407 (with or without a suffix argument) because of the need for
408 those to form complete file names. The handling is such that
409 %O is treated exactly as if it had already been substituted,
410 except that %g, %u, and %U do not currently support additional
411 SUFFIX characters following %O as they would following, for
413 %p substitutes the standard macro predefinitions for the
414 current target machine. Use this when running cpp.
415 %P like %p, but puts `__' before and after the name of each macro.
416 (Except macros that already have __.)
418 %I Substitute a -iprefix option made from GCC_EXEC_PREFIX.
419 %s current argument is the name of a library or startup file of some sort.
420 Search for that file in a standard list of directories
421 and substitute the full name found.
422 %eSTR Print STR as an error message. STR is terminated by a newline.
423 Use this when inconsistent options are detected.
424 %nSTR Print STR as an notice. STR is terminated by a newline.
425 %x{OPTION} Accumulate an option for %X.
426 %X Output the accumulated linker options specified by compilations.
427 %Y Output the accumulated assembler options specified by compilations.
428 %Z Output the accumulated preprocessor options specified by compilations.
429 %v1 Substitute the major version number of GCC.
430 (For version 2.5.3, this is 2.)
431 %v2 Substitute the minor version number of GCC.
432 (For version 2.5.3, this is 5.)
433 %v3 Substitute the patch level number of GCC.
434 (For version 2.5.3, this is 3.)
435 %a process ASM_SPEC as a spec.
436 This allows config.h to specify part of the spec for running as.
437 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
438 used here. This can be used to run a post-processor after the
439 assembler has done its job.
440 %D Dump out a -L option for each directory in startfile_prefixes.
441 If multilib_dir is set, extra entries are generated with it affixed.
442 %l process LINK_SPEC as a spec.
443 %L process LIB_SPEC as a spec.
444 %G process LIBGCC_SPEC as a spec.
445 %M output multilib_dir with directory separators replaced with "_";
446 if multilib_dir is not set or is ".", output "".
447 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
448 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
449 %C process CPP_SPEC as a spec.
450 %1 process CC1_SPEC as a spec.
451 %2 process CC1PLUS_SPEC as a spec.
452 %| output "-" if the input for the current command is coming from a pipe.
453 %* substitute the variable part of a matched option. (See below.)
454 Note that each comma in the substituted string is replaced by
456 %{S} substitutes the -S switch, if that switch was given to CC.
457 If that switch was not specified, this substitutes nothing.
458 Here S is a metasyntactic variable.
459 %{S*} substitutes all the switches specified to CC whose names start
460 with -S. This is used for -o, -I, etc; switches that take
461 arguments. CC considers `-o foo' as being one switch whose
462 name starts with `o'. %{o*} would substitute this text,
463 including the space; thus, two arguments would be generated.
464 %{^S*} likewise, but don't put a blank between a switch and any args.
465 %{S*&T*} likewise, but preserve order of S and T options (the order
466 of S and T in the spec is not significant). Can be any number
467 of ampersand-separated variables; for each the wild card is
468 optional. Useful for CPP as %{D*&U*&A*}.
469 %{S*:X} substitutes X if one or more switches whose names start with -S are
470 specified to CC. Note that the tail part of the -S option
471 (i.e. the part matched by the `*') will be substituted for each
472 occurrence of %* within X.
473 %{<S} remove all occurrences of -S from the command line.
474 Note - this option is position dependent. % commands in the
475 spec string before this option will see -S, % commands in the
476 spec string after this option will not.
477 %{S:X} substitutes X, but only if the -S switch was given to CC.
478 %{!S:X} substitutes X, but only if the -S switch was NOT given to CC.
479 %{|S:X} like %{S:X}, but if no S switch, substitute `-'.
480 %{|!S:X} like %{!S:X}, but if there is an S switch, substitute `-'.
481 %{.S:X} substitutes X, but only if processing a file with suffix S.
482 %{!.S:X} substitutes X, but only if NOT processing a file with suffix S.
483 %{S|P:X} substitutes X if either -S or -P was given to CC. This may be
484 combined with ! and . as above binding stronger than the OR.
485 %(Spec) processes a specification defined in a specs file as *Spec:
486 %[Spec] as above, but put __ around -D arguments
488 The conditional text X in a %{S:X} or %{!S:X} construct may contain
489 other nested % constructs or spaces, or even newlines. They are
490 processed as usual, as described above.
492 The -O, -f, -m, and -W switches are handled specifically in these
493 constructs. If another value of -O or the negated form of a -f, -m, or
494 -W switch is found later in the command line, the earlier switch
495 value is ignored, except with {S*} where S is just one letter; this
496 passes all matching options.
498 The character | at the beginning of the predicate text is used to indicate
499 that a command should be piped to the following command, but only if -pipe
502 Note that it is built into CC which switches take arguments and which
503 do not. You might think it would be useful to generalize this to
504 allow each compiler's spec to say which switches take arguments. But
505 this cannot be done in a consistent fashion. CC cannot even decide
506 which input files have been specified without knowing which switches
507 take arguments, and it must know which input files to compile in order
508 to tell which compilers to run.
510 CC also knows implicitly that arguments starting in `-l' are to be
511 treated as compiler output files, and passed to the linker in their
512 proper position among the other output files. */
514 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
516 /* config.h can define ASM_SPEC to provide extra args to the assembler
517 or extra switch-translations. */
522 /* config.h can define ASM_FINAL_SPEC to run a post processor after
523 the assembler has run. */
524 #ifndef ASM_FINAL_SPEC
525 #define ASM_FINAL_SPEC ""
528 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
529 or extra switch-translations. */
534 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
535 or extra switch-translations. */
540 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
541 or extra switch-translations. */
543 #define CC1PLUS_SPEC ""
546 /* config.h can define LINK_SPEC to provide extra args to the linker
547 or extra switch-translations. */
552 /* config.h can define LIB_SPEC to override the default libraries. */
554 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
557 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
560 #if defined(LINK_LIBGCC_SPECIAL) || defined(LINK_LIBGCC_SPECIAL_1)
561 /* Have gcc do the search for libgcc.a. */
562 #define LIBGCC_SPEC "libgcc.a%s"
564 #define LIBGCC_SPEC "-lgcc"
568 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
569 #ifndef STARTFILE_SPEC
570 #define STARTFILE_SPEC \
571 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
574 /* config.h can define SWITCHES_NEED_SPACES to control which options
575 require spaces between the option and the argument. */
576 #ifndef SWITCHES_NEED_SPACES
577 #define SWITCHES_NEED_SPACES ""
580 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
582 #define ENDFILE_SPEC ""
586 #define LINKER_NAME "collect2"
589 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
591 #ifndef ASM_DEBUG_SPEC
592 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
593 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
594 # define ASM_DEBUG_SPEC \
595 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
596 ? "%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}" \
597 : "%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}")
599 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
600 # define ASM_DEBUG_SPEC "%{g*:--gstabs}"
602 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
603 # define ASM_DEBUG_SPEC "%{g*:--gdwarf2}"
607 #ifndef ASM_DEBUG_SPEC
608 # define ASM_DEBUG_SPEC ""
611 /* Here is the spec for running the linker, after compiling all files. */
613 /* This is overridable by the target in case they need to specify the
614 -lgcc and -lc order specially, yet not require them to override all
615 of LINK_COMMAND_SPEC. */
616 #ifndef LINK_GCC_C_SEQUENCE_SPEC
617 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
620 /* -u* was put back because both BSD and SysV seem to support it. */
621 /* %{static:} simply prevents an error message if the target machine
622 doesn't handle -static. */
623 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
624 scripts which exist in user specified directories, or in standard
626 #ifndef LINK_COMMAND_SPEC
627 #define LINK_COMMAND_SPEC "\
628 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
629 %(linker) %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r} %{s} %{t}\
630 %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
631 %{static:} %{L*} %(link_libgcc) %o %{!nostdlib:%{!nodefaultlibs:%(link_gcc_c_sequence)}}\
632 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
635 #ifndef LINK_LIBGCC_SPEC
636 # ifdef LINK_LIBGCC_SPECIAL
637 /* Don't generate -L options for startfile prefix list. */
638 # define LINK_LIBGCC_SPEC ""
640 /* Do generate them. */
641 # define LINK_LIBGCC_SPEC "%D"
645 #ifndef STARTFILE_PREFIX_SPEC
646 # define STARTFILE_PREFIX_SPEC ""
649 static const char *asm_debug = ASM_DEBUG_SPEC;
650 static const char *cpp_spec = CPP_SPEC;
651 static const char *cpp_predefines = CPP_PREDEFINES;
652 static const char *cc1_spec = CC1_SPEC;
653 static const char *cc1plus_spec = CC1PLUS_SPEC;
654 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
655 static const char *asm_spec = ASM_SPEC;
656 static const char *asm_final_spec = ASM_FINAL_SPEC;
657 static const char *link_spec = LINK_SPEC;
658 static const char *lib_spec = LIB_SPEC;
659 static const char *libgcc_spec = LIBGCC_SPEC;
660 static const char *endfile_spec = ENDFILE_SPEC;
661 static const char *startfile_spec = STARTFILE_SPEC;
662 static const char *switches_need_spaces = SWITCHES_NEED_SPACES;
663 static const char *linker_name_spec = LINKER_NAME;
664 static const char *link_command_spec = LINK_COMMAND_SPEC;
665 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
666 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
668 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
669 There should be no need to override these in target dependent files,
670 but we need to copy them to the specs file so that newer versions
671 of the GCC driver can correctly drive older tool chains with the
672 appropriate -B options. */
674 /* When cpplib handles traditional preprocessing, get rid of this, and
675 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
676 that we default the front end language better. */
677 static const char *trad_capable_cpp =
678 "cc1 -E %{traditional|ftraditional|traditional-cpp:-traditional-cpp}";
680 static const char *cpp_unique_options =
681 "%{C:%{!E:%eGNU C does not support -C without using -E}}\
682 %{CC:%{!E:%eGNU C does not support -CC without using -E}}\
683 %{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*} %{P} %{$} %I\
684 %{MD:-MD %W{!o: %b.d}%W{o*:%.d%*}}\
685 %{MMD:-MMD %W{!o: %b.d}%W{o*:%.d%*}}\
686 %{M} %{MM} %W{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
687 %{!E:%{!M:%{!MM:%{MD|MMD:%{o*:-MQ %*}}}}}\
688 %{!no-gcc:-D__GNUC__=%v1 -D__GNUC_MINOR__=%v2 -D__GNUC_PATCHLEVEL__=%v3}\
689 %{!undef:%{!ansi:%{!std=*:%p}%{std=gnu*:%p}} %P} %{trigraphs}\
690 %{remap} %{g3:-dD} %{H} %C %{D*&U*&A*} %{i*} %Z %i\
693 /* This contains cpp options which are common with cc1_options and are passed
694 only when preprocessing only to avoid duplication. */
695 static const char *cpp_options =
696 "%(cpp_unique_options) %{std*} %{W*&pedantic*} %{w} %{m*} %{f*}\
699 /* This contains cpp options which are not passed when the preprocessor
700 output will be used by another program. */
701 static const char *cpp_debug_options = "%{d*}";
703 /* NB: This is shared amongst all front-ends. */
704 static const char *cc1_options =
705 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
706 %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\
707 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*} %{ansi}\
708 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
709 %{Qn:-fno-ident} %{--help:--help}\
710 %{--target-help:--target-help}\
711 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
712 %{fsyntax-only:-o %j} %{-param*}";
714 static const char *asm_options =
715 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
717 static const char *invoke_as =
718 "%{!S:-o %{|!pipe:%g.s} |\n as %(asm_options) %{!pipe:%g.s} %A }";
720 /* Some compilers have limits on line lengths, and the multilib_select
721 and/or multilib_matches strings can be very long, so we build them at
723 static struct obstack multilib_obstack;
724 static const char *multilib_select;
725 static const char *multilib_matches;
726 static const char *multilib_defaults;
727 static const char *multilib_exclusions;
728 #include "multilib.h"
730 /* Check whether a particular argument is a default argument. */
732 #ifndef MULTILIB_DEFAULTS
733 #define MULTILIB_DEFAULTS { "" }
736 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
740 struct user_specs *next;
741 const char *filename;
744 static struct user_specs *user_specs_head, *user_specs_tail;
746 /* This defines which switch letters take arguments. */
748 #define DEFAULT_SWITCH_TAKES_ARG(CHAR) \
749 ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o' \
750 || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u' \
751 || (CHAR) == 'I' || (CHAR) == 'm' || (CHAR) == 'x' \
752 || (CHAR) == 'L' || (CHAR) == 'A' || (CHAR) == 'B' || (CHAR) == 'b')
754 #ifndef SWITCH_TAKES_ARG
755 #define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR)
758 /* This defines which multi-letter switches take arguments. */
760 #define DEFAULT_WORD_SWITCH_TAKES_ARG(STR) \
761 (!strcmp (STR, "Tdata") || !strcmp (STR, "Ttext") \
762 || !strcmp (STR, "Tbss") || !strcmp (STR, "include") \
763 || !strcmp (STR, "imacros") || !strcmp (STR, "aux-info") \
764 || !strcmp (STR, "idirafter") || !strcmp (STR, "iprefix") \
765 || !strcmp (STR, "iwithprefix") || !strcmp (STR, "iwithprefixbefore") \
766 || !strcmp (STR, "isystem") || !strcmp (STR, "-param") \
767 || !strcmp (STR, "specs") \
768 || !strcmp (STR, "MF") || !strcmp (STR, "MT") || !strcmp (STR, "MQ"))
770 #ifndef WORD_SWITCH_TAKES_ARG
771 #define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
774 #ifdef HAVE_TARGET_EXECUTABLE_SUFFIX
775 /* This defines which switches stop a full compilation. */
776 #define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \
777 ((CHAR) == 'c' || (CHAR) == 'S')
779 #ifndef SWITCH_CURTAILS_COMPILATION
780 #define SWITCH_CURTAILS_COMPILATION(CHAR) \
781 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR)
785 /* Record the mapping from file suffixes for compilation specs. */
789 const char *suffix; /* Use this compiler for input files
790 whose names end in this suffix. */
792 const char *spec; /* To use this compiler, run this spec. */
794 const char *cpp_spec; /* If non-NULL, substitute this spec
795 for `%C', rather than the usual
799 /* Pointer to a vector of `struct compiler' that gives the spec for
800 compiling a file, based on its suffix.
801 A file that does not end in any of these suffixes will be passed
802 unchanged to the loader and nothing else will be done to it.
804 An entry containing two 0s is used to terminate the vector.
806 If multiple entries match a file, the last matching one is used. */
808 static struct compiler *compilers;
810 /* Number of entries in `compilers', not counting the null terminator. */
812 static int n_compilers;
814 /* The default list of file name suffixes and their compilation specs. */
816 static const struct compiler default_compilers[] =
818 /* Add lists of suffixes of known languages here. If those languages
819 were not present when we built the driver, we will hit these copies
820 and be given a more meaningful error than "file not used since
821 linking is not done". */
822 {".m", "#Objective-C", 0}, {".mi", "#Objective-C", 0},
823 {".cc", "#C++", 0}, {".cxx", "#C++", 0}, {".cpp", "#C++", 0},
824 {".cp", "#C++", 0}, {".c++", "#C++", 0}, {".C", "#C++", 0},
826 {".ads", "#Ada", 0}, {".adb", "#Ada", 0},
827 {".f", "#Fortran", 0}, {".for", "#Fortran", 0}, {".fpp", "#Fortran", 0},
828 {".F", "#Fortran", 0}, {".FOR", "#Fortran", 0}, {".FPP", "#Fortran", 0},
829 {".r", "#Ratfor", 0},
830 {".p", "#Pascal", 0}, {".pas", "#Pascal", 0},
831 {".java", "#Java", 0}, {".class", "#Java", 0},
832 {".zip", "#Java", 0}, {".jar", "#Java", 0},
833 /* Next come the entries for C. */
836 /* cc1 has an integrated ISO C preprocessor. We should invoke the
837 external preprocessor if -save-temps is given. */
838 "%{E|M|MM:%(trad_capable_cpp) %{ansi:-std=c89} %(cpp_options)\
839 %(cpp_debug_options)}\
841 %{traditional|ftraditional:\
842 %eGNU C no longer supports -traditional without -E}\
843 %{save-temps|traditional-cpp:%(trad_capable_cpp) \
844 %{ansi:-std=c89} %(cpp_options) %b.i \n\
845 cc1 -fpreprocessed %b.i %(cc1_options)}\
846 %{!save-temps:%{!traditional-cpp:\
847 cc1 %{ansi:-std=c89} %(cpp_unique_options) %(cc1_options)}}\
848 %{!fsyntax-only:%(invoke_as)}}}}", 0},
850 "%{!E:%e-E required when input is from standard input}\
851 %(trad_capable_cpp) %{ansi:-std=c89} %(cpp_options)", 0},
852 {".h", "@c-header", 0},
854 "%{!E:%ecompilation of header file requested} \
855 %(trad_capable_cpp) %{ansi:-std=c89} %(cpp_options) %(cpp_debug_options)",
857 {".i", "@cpp-output", 0},
859 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0},
860 {".s", "@assembler", 0},
862 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0},
863 {".S", "@assembler-with-cpp", 0},
864 {"@assembler-with-cpp",
865 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
866 %{E|M|MM:%(cpp_debug_options)}\
867 %{!M:%{!MM:%{!E:%{!S:-o %{|!pipe:%g.s} |\n\
868 as %(asm_debug) %(asm_options) %{!pipe:%g.s} %A }}}}", 0},
870 /* Mark end of table */
874 /* Number of elements in default_compilers, not counting the terminator. */
876 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
878 /* A vector of options to give to the linker.
879 These options are accumulated by %x,
880 and substituted into the linker command with %X. */
881 static int n_linker_options;
882 static char **linker_options;
884 /* A vector of options to give to the assembler.
885 These options are accumulated by -Wa,
886 and substituted into the assembler command with %Y. */
887 static int n_assembler_options;
888 static char **assembler_options;
890 /* A vector of options to give to the preprocessor.
891 These options are accumulated by -Wp,
892 and substituted into the preprocessor command with %Z. */
893 static int n_preprocessor_options;
894 static char **preprocessor_options;
896 /* Define how to map long options into short ones. */
898 /* This structure describes one mapping. */
901 /* The long option's name. */
902 const char *const name;
903 /* The equivalent short option. */
904 const char *const equivalent;
905 /* Argument info. A string of flag chars; NULL equals no options.
906 a => argument required.
907 o => argument optional.
908 j => join argument to equivalent, making one word.
909 * => require other text after NAME as an argument. */
910 const char *const arg_info;
913 /* This is the table of mappings. Mappings are tried sequentially
914 for each option encountered; the first one that matches, wins. */
916 static const struct option_map option_map[] =
918 {"--all-warnings", "-Wall", 0},
919 {"--ansi", "-ansi", 0},
920 {"--assemble", "-S", 0},
921 {"--assert", "-A", "a"},
922 {"--classpath", "-fclasspath=", "aj"},
923 {"--bootclasspath", "-fbootclasspath=", "aj"},
924 {"--CLASSPATH", "-fclasspath=", "aj"},
925 {"--comments", "-C", 0},
926 {"--comments-in-macros", "-CC", 0},
927 {"--compile", "-c", 0},
928 {"--debug", "-g", "oj"},
929 {"--define-macro", "-D", "aj"},
930 {"--dependencies", "-M", 0},
931 {"--dump", "-d", "a"},
932 {"--dumpbase", "-dumpbase", "a"},
933 {"--entry", "-e", 0},
934 {"--extra-warnings", "-W", 0},
935 {"--for-assembler", "-Wa", "a"},
936 {"--for-linker", "-Xlinker", "a"},
937 {"--force-link", "-u", "a"},
938 {"--imacros", "-imacros", "a"},
939 {"--include", "-include", "a"},
940 {"--include-barrier", "-I-", 0},
941 {"--include-directory", "-I", "aj"},
942 {"--include-directory-after", "-idirafter", "a"},
943 {"--include-prefix", "-iprefix", "a"},
944 {"--include-with-prefix", "-iwithprefix", "a"},
945 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
946 {"--include-with-prefix-after", "-iwithprefix", "a"},
947 {"--language", "-x", "a"},
948 {"--library-directory", "-L", "a"},
949 {"--machine", "-m", "aj"},
950 {"--machine-", "-m", "*j"},
951 {"--no-line-commands", "-P", 0},
952 {"--no-precompiled-includes", "-noprecomp", 0},
953 {"--no-standard-includes", "-nostdinc", 0},
954 {"--no-standard-libraries", "-nostdlib", 0},
955 {"--no-warnings", "-w", 0},
956 {"--optimize", "-O", "oj"},
957 {"--output", "-o", "a"},
958 {"--output-class-directory", "-foutput-class-dir=", "ja"},
959 {"--param", "--param", "a"},
960 {"--pedantic", "-pedantic", 0},
961 {"--pedantic-errors", "-pedantic-errors", 0},
962 {"--pipe", "-pipe", 0},
963 {"--prefix", "-B", "a"},
964 {"--preprocess", "-E", 0},
965 {"--print-search-dirs", "-print-search-dirs", 0},
966 {"--print-file-name", "-print-file-name=", "aj"},
967 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
968 {"--print-missing-file-dependencies", "-MG", 0},
969 {"--print-multi-lib", "-print-multi-lib", 0},
970 {"--print-multi-directory", "-print-multi-directory", 0},
971 {"--print-prog-name", "-print-prog-name=", "aj"},
972 {"--profile", "-p", 0},
973 {"--profile-blocks", "-a", 0},
974 {"--quiet", "-q", 0},
975 {"--resource", "-fcompile-resource=", "aj"},
976 {"--save-temps", "-save-temps", 0},
977 {"--shared", "-shared", 0},
978 {"--silent", "-q", 0},
979 {"--specs", "-specs=", "aj"},
980 {"--static", "-static", 0},
981 {"--std", "-std=", "aj"},
982 {"--symbolic", "-symbolic", 0},
983 {"--target", "-b", "a"},
984 {"--time", "-time", 0},
985 {"--trace-includes", "-H", 0},
986 {"--traditional", "-traditional", 0},
987 {"--traditional-cpp", "-traditional-cpp", 0},
988 {"--trigraphs", "-trigraphs", 0},
989 {"--undefine-macro", "-U", "aj"},
990 {"--use-version", "-V", "a"},
991 {"--user-dependencies", "-MM", 0},
992 {"--verbose", "-v", 0},
993 {"--warn-", "-W", "*j"},
994 {"--write-dependencies", "-MD", 0},
995 {"--write-user-dependencies", "-MMD", 0},
1000 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1001 static const struct {
1002 const char *const option_found;
1003 const char *const replacements;
1004 } target_option_translations[] =
1006 TARGET_OPTION_TRANSLATE_TABLE,
1011 /* Translate the options described by *ARGCP and *ARGVP.
1012 Make a new vector and store it back in *ARGVP,
1013 and store its length in *ARGVC. */
1016 translate_options (argcp, argvp)
1018 const char *const **argvp;
1022 const char *const *argv = *argvp;
1023 int newvsize = (argc + 2) * 2 * sizeof (const char *);
1025 (const char **) xmalloc (newvsize);
1029 newv[newindex++] = argv[i++];
1033 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1037 target_option_translations[tott_idx].option_found;
1040 if (strcmp (target_option_translations[tott_idx].option_found,
1047 for (sp = target_option_translations[tott_idx].replacements;
1054 newvsize += spaces * sizeof (const char *);
1055 newv = (const char **) xrealloc (newv, newvsize);
1057 sp = target_option_translations[tott_idx].replacements;
1066 newv[newindex++] = np;
1067 while (*np != ' ' && *np)
1078 if (target_option_translations[tott_idx].option_found)
1082 /* Translate -- options. */
1083 if (argv[i][0] == '-' && argv[i][1] == '-')
1086 /* Find a mapping that applies to this option. */
1087 for (j = 0; j < ARRAY_SIZE (option_map); j++)
1089 size_t optlen = strlen (option_map[j].name);
1090 size_t arglen = strlen (argv[i]);
1091 size_t complen = arglen > optlen ? optlen : arglen;
1092 const char *arginfo = option_map[j].arg_info;
1097 if (!strncmp (argv[i], option_map[j].name, complen))
1099 const char *arg = 0;
1101 if (arglen < optlen)
1104 for (k = j + 1; k < ARRAY_SIZE (option_map); k++)
1105 if (strlen (option_map[k].name) >= arglen
1106 && !strncmp (argv[i], option_map[k].name, arglen))
1108 error ("ambiguous abbreviation %s", argv[i]);
1112 if (k != ARRAY_SIZE (option_map))
1116 if (arglen > optlen)
1118 /* If the option has an argument, accept that. */
1119 if (argv[i][optlen] == '=')
1120 arg = argv[i] + optlen + 1;
1122 /* If this mapping requires extra text at end of name,
1123 accept that as "argument". */
1124 else if (strchr (arginfo, '*') != 0)
1125 arg = argv[i] + optlen;
1127 /* Otherwise, extra text at end means mismatch.
1128 Try other mappings. */
1133 else if (strchr (arginfo, '*') != 0)
1135 error ("incomplete `%s' option", option_map[j].name);
1139 /* Handle arguments. */
1140 if (strchr (arginfo, 'a') != 0)
1146 error ("missing argument to `%s' option",
1147 option_map[j].name);
1154 else if (strchr (arginfo, '*') != 0)
1156 else if (strchr (arginfo, 'o') == 0)
1159 error ("extraneous argument to `%s' option",
1160 option_map[j].name);
1164 /* Store the translation as one argv elt or as two. */
1165 if (arg != 0 && strchr (arginfo, 'j') != 0)
1166 newv[newindex++] = concat (option_map[j].equivalent, arg,
1170 newv[newindex++] = option_map[j].equivalent;
1171 newv[newindex++] = arg;
1174 newv[newindex++] = option_map[j].equivalent;
1182 /* Handle old-fashioned options--just copy them through,
1183 with their arguments. */
1184 else if (argv[i][0] == '-')
1186 const char *p = argv[i] + 1;
1190 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
1191 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
1192 else if (WORD_SWITCH_TAKES_ARG (p))
1193 nskip += WORD_SWITCH_TAKES_ARG (p);
1194 else if ((c == 'B' || c == 'b' || c == 'x')
1197 else if (! strcmp (p, "Xlinker"))
1200 /* Watch out for an option at the end of the command line that
1201 is missing arguments, and avoid skipping past the end of the
1203 if (nskip + i > argc)
1208 newv[newindex++] = argv[i++];
1213 /* Ordinary operands, or +e options. */
1214 newv[newindex++] = argv[i++];
1229 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1230 be considered whitespace. */
1231 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1233 else if (*p == '\n' || *p == ' ' || *p == '\t')
1247 /* Structures to keep track of prefixes to try when looking for files. */
1251 const char *prefix; /* String to prepend to the path. */
1252 struct prefix_list *next; /* Next in linked list. */
1253 int require_machine_suffix; /* Don't use without machine_suffix. */
1254 /* 2 means try both machine_suffix and just_machine_suffix. */
1255 int *used_flag_ptr; /* 1 if a file was found with this prefix. */
1256 int priority; /* Sort key - priority within list */
1261 struct prefix_list *plist; /* List of prefixes to try */
1262 int max_len; /* Max length of a prefix in PLIST */
1263 const char *name; /* Name of this list (used in config stuff) */
1266 /* List of prefixes to try when looking for executables. */
1268 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1270 /* List of prefixes to try when looking for startup (crt0) files. */
1272 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1274 /* List of prefixes to try when looking for include files. */
1276 static struct path_prefix include_prefixes = { 0, 0, "include" };
1278 /* Suffix to attach to directories searched for commands.
1279 This looks like `MACHINE/VERSION/'. */
1281 static const char *machine_suffix = 0;
1283 /* Suffix to attach to directories searched for commands.
1284 This is just `MACHINE/'. */
1286 static const char *just_machine_suffix = 0;
1288 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1290 static const char *gcc_exec_prefix;
1292 /* Default prefixes to attach to command names. */
1294 #ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */
1295 #undef MD_EXEC_PREFIX
1296 #undef MD_STARTFILE_PREFIX
1297 #undef MD_STARTFILE_PREFIX_1
1300 /* If no prefixes defined, use the null string, which will disable them. */
1301 #ifndef MD_EXEC_PREFIX
1302 #define MD_EXEC_PREFIX ""
1304 #ifndef MD_STARTFILE_PREFIX
1305 #define MD_STARTFILE_PREFIX ""
1307 #ifndef MD_STARTFILE_PREFIX_1
1308 #define MD_STARTFILE_PREFIX_1 ""
1311 /* Supply defaults for the standard prefixes. */
1313 #ifndef STANDARD_EXEC_PREFIX
1314 #define STANDARD_EXEC_PREFIX "/usr/local/lib/gcc-lib/"
1316 #ifndef STANDARD_STARTFILE_PREFIX
1317 #define STANDARD_STARTFILE_PREFIX "/usr/local/lib/"
1319 #ifndef TOOLDIR_BASE_PREFIX
1320 #define TOOLDIR_BASE_PREFIX "/usr/local/"
1322 #ifndef STANDARD_BINDIR_PREFIX
1323 #define STANDARD_BINDIR_PREFIX "/usr/local/bin"
1326 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1327 static const char *const standard_exec_prefix_1 = "/usr/lib/gcc/";
1328 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1330 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1331 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1332 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1333 static const char *const standard_startfile_prefix_1 = "/lib/";
1334 static const char *const standard_startfile_prefix_2 = "/usr/lib/";
1336 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1337 static const char *tooldir_prefix;
1339 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1341 /* Subdirectory to use for locating libraries. Set by
1342 set_multilib_dir based on the compilation options. */
1344 static const char *multilib_dir;
1346 /* Structure to keep track of the specs that have been defined so far.
1347 These are accessed using %(specname) or %[specname] in a compiler
1352 /* The following 2 fields must be first */
1353 /* to allow EXTRA_SPECS to be initialized */
1354 const char *name; /* name of the spec. */
1355 const char *ptr; /* available ptr if no static pointer */
1357 /* The following fields are not initialized */
1358 /* by EXTRA_SPECS */
1359 const char **ptr_spec; /* pointer to the spec itself. */
1360 struct spec_list *next; /* Next spec in linked list. */
1361 int name_len; /* length of the name */
1362 int alloc_p; /* whether string was allocated */
1365 #define INIT_STATIC_SPEC(NAME,PTR) \
1366 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1368 /* List of statically defined specs. */
1369 static struct spec_list static_specs[] =
1371 INIT_STATIC_SPEC ("asm", &asm_spec),
1372 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1373 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1374 INIT_STATIC_SPEC ("asm_options", &asm_options),
1375 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1376 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1377 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1378 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1379 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1380 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1381 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1382 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1383 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1384 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1385 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1386 INIT_STATIC_SPEC ("link", &link_spec),
1387 INIT_STATIC_SPEC ("lib", &lib_spec),
1388 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1389 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1390 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces),
1391 INIT_STATIC_SPEC ("predefines", &cpp_predefines),
1392 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1393 INIT_STATIC_SPEC ("version", &compiler_version),
1394 INIT_STATIC_SPEC ("multilib", &multilib_select),
1395 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1396 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1397 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1398 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1399 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1400 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1401 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1402 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1403 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1404 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1407 #ifdef EXTRA_SPECS /* additional specs needed */
1408 /* Structure to keep track of just the first two args of a spec_list.
1409 That is all that the EXTRA_SPECS macro gives us. */
1412 const char *const name;
1413 const char *const ptr;
1416 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1417 static struct spec_list *extra_specs = (struct spec_list *) 0;
1420 /* List of dynamically allocates specs that have been defined so far. */
1422 static struct spec_list *specs = (struct spec_list *) 0;
1424 /* Add appropriate libgcc specs to OBSTACK, taking into account
1425 various permutations of -shared-libgcc, -shared, and such. */
1427 #ifdef ENABLE_SHARED_LIBGCC
1429 init_gcc_specs (obstack, shared_name, static_name, eh_name)
1430 struct obstack *obstack;
1431 const char *shared_name;
1432 const char *static_name;
1433 const char *eh_name;
1437 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name,
1438 "}%{!static:%{!static-libgcc:",
1439 "%{!shared:%{!shared-libgcc:", static_name, " ",
1440 eh_name, "}%{shared-libgcc:", shared_name, " ",
1441 static_name, "}}%{shared:",
1443 "%{shared-libgcc:", shared_name,
1444 "}%{!shared-libgcc:", static_name, "}",
1450 obstack_grow (obstack, buf, strlen (buf));
1453 #endif /* ENABLE_SHARED_LIBGCC */
1455 /* Initialize the specs lookup routines. */
1460 struct spec_list *next = (struct spec_list *) 0;
1461 struct spec_list *sl = (struct spec_list *) 0;
1465 return; /* Already initialized. */
1468 notice ("Using built-in specs.\n");
1471 extra_specs = (struct spec_list *)
1472 xcalloc (sizeof (struct spec_list), ARRAY_SIZE (extra_specs_1));
1474 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1476 sl = &extra_specs[i];
1477 sl->name = extra_specs_1[i].name;
1478 sl->ptr = extra_specs_1[i].ptr;
1480 sl->name_len = strlen (sl->name);
1481 sl->ptr_spec = &sl->ptr;
1486 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1488 sl = &static_specs[i];
1493 #ifdef ENABLE_SHARED_LIBGCC
1494 /* ??? If neither -shared-libgcc nor --static-libgcc was
1495 seen, then we should be making an educated guess. Some proposed
1496 heuristics for ELF include:
1498 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1499 program will be doing dynamic loading, which will likely
1500 need the shared libgcc.
1502 (2) If "-ldl", then it's also a fair bet that we're doing
1505 (3) For each ET_DYN we're linking against (either through -lfoo
1506 or /some/path/foo.so), check to see whether it or one of
1507 its dependencies depends on a shared libgcc.
1511 If the runtime is fixed to look for program headers instead
1512 of calling __register_frame_info at all, for each object,
1513 use the shared libgcc if any EH symbol referenced.
1515 If crtstuff is fixed to not invoke __register_frame_info
1516 automatically, for each object, use the shared libgcc if
1517 any non-empty unwind section found.
1519 Doing any of this probably requires invoking an external program to
1520 do the actual object file scanning. */
1522 const char *p = libgcc_spec;
1525 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1526 when given the proper command line arguments. */
1529 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1531 init_gcc_specs (&obstack,
1532 #ifdef NO_SHARED_LIBGCC_MULTILIB
1543 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1545 /* Ug. We don't know shared library extensions. Hope that
1546 systems that use this form don't do shared libraries. */
1547 init_gcc_specs (&obstack,
1548 #ifdef NO_SHARED_LIBGCC_MULTILIB
1561 obstack_1grow (&obstack, *p);
1562 in_sep = (*p == ' ');
1567 obstack_1grow (&obstack, '\0');
1568 libgcc_spec = obstack_finish (&obstack);
1571 #ifdef USE_AS_TRADITIONAL_FORMAT
1572 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1574 static const char tf[] = "--traditional-format ";
1575 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1576 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1577 asm_spec = obstack_finish (&obstack);
1581 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1582 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1583 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1584 link_spec = obstack_finish (&obstack);
1590 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1591 removed; If the spec starts with a + then SPEC is added to the end of the
1595 set_spec (name, spec)
1599 struct spec_list *sl;
1600 const char *old_spec;
1601 int name_len = strlen (name);
1604 /* If this is the first call, initialize the statically allocated specs. */
1607 struct spec_list *next = (struct spec_list *) 0;
1608 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1610 sl = &static_specs[i];
1617 /* See if the spec already exists. */
1618 for (sl = specs; sl; sl = sl->next)
1619 if (name_len == sl->name_len && !strcmp (sl->name, name))
1624 /* Not found - make it. */
1625 sl = (struct spec_list *) xmalloc (sizeof (struct spec_list));
1626 sl->name = xstrdup (name);
1627 sl->name_len = name_len;
1628 sl->ptr_spec = &sl->ptr;
1630 *(sl->ptr_spec) = "";
1635 old_spec = *(sl->ptr_spec);
1636 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1637 ? concat (old_spec, spec + 1, NULL)
1642 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1645 /* Free the old spec. */
1646 if (old_spec && sl->alloc_p)
1647 free ((PTR) old_spec);
1652 /* Accumulate a command (program name and args), and run it. */
1654 /* Vector of pointers to arguments in the current line of specifications. */
1656 static const char **argbuf;
1658 /* Number of elements allocated in argbuf. */
1660 static int argbuf_length;
1662 /* Number of elements in argbuf currently in use (containing args). */
1664 static int argbuf_index;
1666 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1667 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1670 static struct temp_name {
1671 const char *suffix; /* suffix associated with the code. */
1672 int length; /* strlen (suffix). */
1673 int unique; /* Indicates whether %g or %u/%U was used. */
1674 const char *filename; /* associated filename. */
1675 int filename_length; /* strlen (filename). */
1676 struct temp_name *next;
1679 /* Number of commands executed so far. */
1681 static int execution_count;
1683 /* Number of commands that exited with a signal. */
1685 static int signal_count;
1687 /* Name with which this program was invoked. */
1689 static const char *programname;
1691 /* Clear out the vector of arguments (after a command is executed). */
1699 /* Add one argument to the vector at the end.
1700 This is done when a space is seen or at the end of the line.
1701 If DELETE_ALWAYS is nonzero, the arg is a filename
1702 and the file should be deleted eventually.
1703 If DELETE_FAILURE is nonzero, the arg is a filename
1704 and the file should be deleted if this compilation fails. */
1707 store_arg (arg, delete_always, delete_failure)
1709 int delete_always, delete_failure;
1711 if (argbuf_index + 1 == argbuf_length)
1713 = (const char **) xrealloc (argbuf,
1714 (argbuf_length *= 2) * sizeof (const char *));
1716 argbuf[argbuf_index++] = arg;
1717 argbuf[argbuf_index] = 0;
1719 if (delete_always || delete_failure)
1720 record_temp_file (arg, delete_always, delete_failure);
1723 /* Load specs from a file name named FILENAME, replacing occurrences of
1724 various different types of line-endings, \r\n, \n\r and just \r, with
1728 load_specs (filename)
1729 const char *filename;
1733 struct stat statbuf;
1740 notice ("Reading specs from %s\n", filename);
1742 /* Open and stat the file. */
1743 desc = open (filename, O_RDONLY, 0);
1745 pfatal_with_name (filename);
1746 if (stat (filename, &statbuf) < 0)
1747 pfatal_with_name (filename);
1749 /* Read contents of file into BUFFER. */
1750 buffer = xmalloc ((unsigned) statbuf.st_size + 1);
1751 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1753 pfatal_with_name (filename);
1754 buffer[readlen] = 0;
1757 specs = xmalloc (readlen + 1);
1759 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1765 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1767 else if (*(buffer_p + 1) == '\n') /* \r\n */
1781 /* Read compilation specs from a file named FILENAME,
1782 replacing the default ones.
1784 A suffix which starts with `*' is a definition for
1785 one of the machine-specific sub-specs. The "suffix" should be
1786 *asm, *cc1, *cpp, *link, *startfile, etc.
1787 The corresponding spec is stored in asm_spec, etc.,
1788 rather than in the `compilers' vector.
1790 Anything invalid in the file is a fatal error. */
1793 read_specs (filename, main_p)
1794 const char *filename;
1800 buffer = load_specs (filename);
1802 /* Scan BUFFER for specs, putting them in the vector. */
1808 char *in, *out, *p1, *p2, *p3;
1810 /* Advance P in BUFFER to the next nonblank nocomment line. */
1811 p = skip_whitespace (p);
1815 /* Is this a special command that starts with '%'? */
1816 /* Don't allow this for the main specs file, since it would
1817 encourage people to overwrite it. */
1818 if (*p == '%' && !main_p)
1821 while (*p && *p != '\n')
1827 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1828 && (p1[sizeof "%include" - 1] == ' '
1829 || p1[sizeof "%include" - 1] == '\t'))
1833 p1 += sizeof ("%include");
1834 while (*p1 == ' ' || *p1 == '\t')
1837 if (*p1++ != '<' || p[-2] != '>')
1838 fatal ("specs %%include syntax malformed after %ld characters",
1839 (long) (p1 - buffer + 1));
1842 new_filename = find_a_file (&startfile_prefixes, p1, R_OK);
1843 read_specs (new_filename ? new_filename : p1, FALSE);
1846 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1847 && (p1[sizeof "%include_noerr" - 1] == ' '
1848 || p1[sizeof "%include_noerr" - 1] == '\t'))
1852 p1 += sizeof "%include_noerr";
1853 while (*p1 == ' ' || *p1 == '\t')
1856 if (*p1++ != '<' || p[-2] != '>')
1857 fatal ("specs %%include syntax malformed after %ld characters",
1858 (long) (p1 - buffer + 1));
1861 new_filename = find_a_file (&startfile_prefixes, p1, R_OK);
1863 read_specs (new_filename, FALSE);
1864 else if (verbose_flag)
1865 notice ("could not find specs file %s\n", p1);
1868 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1869 && (p1[sizeof "%rename" - 1] == ' '
1870 || p1[sizeof "%rename" - 1] == '\t'))
1873 struct spec_list *sl;
1874 struct spec_list *newsl;
1876 /* Get original name. */
1877 p1 += sizeof "%rename";
1878 while (*p1 == ' ' || *p1 == '\t')
1881 if (! ISALPHA ((unsigned char) *p1))
1882 fatal ("specs %%rename syntax malformed after %ld characters",
1883 (long) (p1 - buffer));
1886 while (*p2 && !ISSPACE ((unsigned char) *p2))
1889 if (*p2 != ' ' && *p2 != '\t')
1890 fatal ("specs %%rename syntax malformed after %ld characters",
1891 (long) (p2 - buffer));
1895 while (*p2 == ' ' || *p2 == '\t')
1898 if (! ISALPHA ((unsigned char) *p2))
1899 fatal ("specs %%rename syntax malformed after %ld characters",
1900 (long) (p2 - buffer));
1902 /* Get new spec name. */
1904 while (*p3 && !ISSPACE ((unsigned char) *p3))
1908 fatal ("specs %%rename syntax malformed after %ld characters",
1909 (long) (p3 - buffer));
1912 for (sl = specs; sl; sl = sl->next)
1913 if (name_len == sl->name_len && !strcmp (sl->name, p1))
1917 fatal ("specs %s spec was not found to be renamed", p1);
1919 if (strcmp (p1, p2) == 0)
1922 for (newsl = specs; newsl; newsl = newsl->next)
1923 if (strcmp (newsl->name, p2) == 0)
1924 fatal ("%s: attempt to rename spec '%s' to already defined spec '%s'",
1929 notice ("rename spec %s to %s\n", p1, p2);
1931 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
1935 set_spec (p2, *(sl->ptr_spec));
1937 free ((PTR) *(sl->ptr_spec));
1939 *(sl->ptr_spec) = "";
1944 fatal ("specs unknown %% command after %ld characters",
1945 (long) (p1 - buffer));
1948 /* Find the colon that should end the suffix. */
1950 while (*p1 && *p1 != ':' && *p1 != '\n')
1953 /* The colon shouldn't be missing. */
1955 fatal ("specs file malformed after %ld characters",
1956 (long) (p1 - buffer));
1958 /* Skip back over trailing whitespace. */
1960 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
1963 /* Copy the suffix to a string. */
1964 suffix = save_string (p, p2 - p);
1965 /* Find the next line. */
1966 p = skip_whitespace (p1 + 1);
1968 fatal ("specs file malformed after %ld characters",
1969 (long) (p - buffer));
1972 /* Find next blank line or end of string. */
1973 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
1976 /* Specs end at the blank line and do not include the newline. */
1977 spec = save_string (p, p1 - p);
1980 /* Delete backslash-newline sequences from the spec. */
1985 if (in[0] == '\\' && in[1] == '\n')
1987 else if (in[0] == '#')
1988 while (*in && *in != '\n')
1996 if (suffix[0] == '*')
1998 if (! strcmp (suffix, "*link_command"))
1999 link_command_spec = spec;
2001 set_spec (suffix + 1, spec);
2005 /* Add this pair to the vector. */
2007 = ((struct compiler *)
2008 xrealloc (compilers,
2009 (n_compilers + 2) * sizeof (struct compiler)));
2011 compilers[n_compilers].suffix = suffix;
2012 compilers[n_compilers].spec = spec;
2014 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2018 link_command_spec = spec;
2021 if (link_command_spec == 0)
2022 fatal ("spec file has no spec for linking");
2025 /* Record the names of temporary files we tell compilers to write,
2026 and delete them at the end of the run. */
2028 /* This is the common prefix we use to make temp file names.
2029 It is chosen once for each run of this program.
2030 It is substituted into a spec by %g or %j.
2031 Thus, all temp file names contain this prefix.
2032 In practice, all temp file names start with this prefix.
2034 This prefix comes from the envvar TMPDIR if it is defined;
2035 otherwise, from the P_tmpdir macro if that is defined;
2036 otherwise, in /usr/tmp or /tmp;
2037 or finally the current directory if all else fails. */
2039 static const char *temp_filename;
2041 /* Length of the prefix. */
2043 static int temp_filename_length;
2045 /* Define the list of temporary files to delete. */
2050 struct temp_file *next;
2053 /* Queue of files to delete on success or failure of compilation. */
2054 static struct temp_file *always_delete_queue;
2055 /* Queue of files to delete on failure of compilation. */
2056 static struct temp_file *failure_delete_queue;
2058 /* Record FILENAME as a file to be deleted automatically.
2059 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2060 otherwise delete it in any case.
2061 FAIL_DELETE nonzero means delete it if a compilation step fails;
2062 otherwise delete it in any case. */
2065 record_temp_file (filename, always_delete, fail_delete)
2066 const char *filename;
2070 char *const name = xstrdup (filename);
2074 struct temp_file *temp;
2075 for (temp = always_delete_queue; temp; temp = temp->next)
2076 if (! strcmp (name, temp->name))
2079 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
2080 temp->next = always_delete_queue;
2082 always_delete_queue = temp;
2089 struct temp_file *temp;
2090 for (temp = failure_delete_queue; temp; temp = temp->next)
2091 if (! strcmp (name, temp->name))
2094 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
2095 temp->next = failure_delete_queue;
2097 failure_delete_queue = temp;
2103 /* Delete all the temporary files whose names we previously recorded. */
2106 delete_if_ordinary (name)
2113 printf ("Delete %s? (y or n) ", name);
2117 while ((c = getchar ()) != '\n' && c != EOF)
2120 if (i == 'y' || i == 'Y')
2122 if (stat (name, &st) >= 0 && S_ISREG (st.st_mode))
2123 if (unlink (name) < 0)
2125 perror_with_name (name);
2129 delete_temp_files ()
2131 struct temp_file *temp;
2133 for (temp = always_delete_queue; temp; temp = temp->next)
2134 delete_if_ordinary (temp->name);
2135 always_delete_queue = 0;
2138 /* Delete all the files to be deleted on error. */
2141 delete_failure_queue ()
2143 struct temp_file *temp;
2145 for (temp = failure_delete_queue; temp; temp = temp->next)
2146 delete_if_ordinary (temp->name);
2150 clear_failure_queue ()
2152 failure_delete_queue = 0;
2155 /* Build a list of search directories from PATHS.
2156 PREFIX is a string to prepend to the list.
2157 If CHECK_DIR_P is non-zero we ensure the directory exists.
2158 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2159 It is also used by the --print-search-dirs flag. */
2162 build_search_list (paths, prefix, check_dir_p)
2163 struct path_prefix *paths;
2167 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0;
2169 = (just_machine_suffix) ? strlen (just_machine_suffix) : 0;
2170 int first_time = TRUE;
2171 struct prefix_list *pprefix;
2173 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2174 obstack_1grow (&collect_obstack, '=');
2176 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next)
2178 int len = strlen (pprefix->prefix);
2182 || is_directory (pprefix->prefix, machine_suffix, 0)))
2185 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2188 obstack_grow (&collect_obstack, pprefix->prefix, len);
2189 obstack_grow (&collect_obstack, machine_suffix, suffix_len);
2192 if (just_machine_suffix
2193 && pprefix->require_machine_suffix == 2
2195 || is_directory (pprefix->prefix, just_machine_suffix, 0)))
2198 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2201 obstack_grow (&collect_obstack, pprefix->prefix, len);
2202 obstack_grow (&collect_obstack, just_machine_suffix,
2206 if (! pprefix->require_machine_suffix)
2209 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2212 obstack_grow (&collect_obstack, pprefix->prefix, len);
2216 obstack_1grow (&collect_obstack, '\0');
2217 return obstack_finish (&collect_obstack);
2220 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2224 putenv_from_prefixes (paths, env_var)
2225 struct path_prefix *paths;
2226 const char *env_var;
2228 putenv (build_search_list (paths, env_var, 1));
2233 /* FIXME: the location independence code for VMS is hairier than this,
2234 and hasn't been written. */
2236 /* Split a filename into component directories. */
2239 split_directories (name, ptr_num_dirs)
2248 /* Count the number of directories. Special case MSDOS disk names as part
2249 of the initial directory. */
2251 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2252 if (name[1] == ':' && IS_DIR_SEPARATOR (name[2]))
2257 #endif /* HAVE_DOS_BASED_FILE_SYSTEM */
2259 while ((ch = *p++) != '\0')
2261 if (IS_DIR_SEPARATOR (ch))
2264 while (IS_DIR_SEPARATOR (*p))
2269 dirs = (char **) xmalloc (sizeof (char *) * (num_dirs + 2));
2271 /* Now copy the directory parts. */
2274 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2275 if (name[1] == ':' && IS_DIR_SEPARATOR (name[2]))
2277 dirs[num_dirs++] = save_string (p, 3);
2280 #endif /* HAVE_DOS_BASED_FILE_SYSTEM */
2283 while ((ch = *p++) != '\0')
2285 if (IS_DIR_SEPARATOR (ch))
2287 while (IS_DIR_SEPARATOR (*p))
2290 dirs[num_dirs++] = save_string (q, p - q);
2296 dirs[num_dirs++] = save_string (q, p - 1 - q);
2298 dirs[num_dirs] = NULL;
2300 *ptr_num_dirs = num_dirs;
2305 /* Release storage held by split directories. */
2308 free_split_directories (dirs)
2313 while (dirs[i] != NULL)
2316 free ((char *) dirs);
2319 /* Given three strings PROGNAME, BIN_PREFIX, PREFIX, return a string that gets
2320 to PREFIX starting with the directory portion of PROGNAME and a relative
2321 pathname of the difference between BIN_PREFIX and PREFIX.
2323 For example, if BIN_PREFIX is /alpha/beta/gamma/gcc/delta, PREFIX is
2324 /alpha/beta/gamma/omega/, and PROGNAME is /red/green/blue/gcc, then this
2325 function will return /red/green/blue/../omega.
2327 If no relative prefix can be found, return NULL. */
2330 make_relative_prefix (progname, bin_prefix, prefix)
2331 const char *progname;
2332 const char *bin_prefix;
2335 char **prog_dirs, **bin_dirs, **prefix_dirs;
2336 int prog_num, bin_num, prefix_num, std_loc_p;
2339 prog_dirs = split_directories (progname, &prog_num);
2340 bin_dirs = split_directories (bin_prefix, &bin_num);
2342 /* If there is no full pathname, try to find the program by checking in each
2343 of the directories specified in the PATH environment variable. */
2348 GET_ENV_PATH_LIST (temp, "PATH");
2351 char *startp, *endp, *nstore;
2352 size_t prefixlen = strlen (temp) + 1;
2356 nstore = (char *) alloca (prefixlen + strlen (progname) + 1);
2358 startp = endp = temp;
2361 if (*endp == PATH_SEPARATOR || *endp == 0)
2366 nstore[1] = DIR_SEPARATOR;
2371 strncpy (nstore, startp, endp - startp);
2372 if (! IS_DIR_SEPARATOR (endp[-1]))
2374 nstore[endp - startp] = DIR_SEPARATOR;
2375 nstore[endp - startp + 1] = 0;
2378 nstore[endp - startp] = 0;
2380 strcat (nstore, progname);
2381 if (! access (nstore, X_OK)
2382 #ifdef HAVE_HOST_EXECUTABLE_SUFFIX
2383 || ! access (strcat (nstore, HOST_EXECUTABLE_SUFFIX), X_OK)
2387 free_split_directories (prog_dirs);
2389 prog_dirs = split_directories (progname, &prog_num);
2395 endp = startp = endp + 1;
2403 /* Remove the program name from comparison of directory names. */
2406 /* Determine if the compiler is installed in the standard location, and if
2407 so, we don't need to specify relative directories. Also, if argv[0]
2408 doesn't contain any directory specifiers, there is not much we can do. */
2410 if (prog_num == bin_num)
2412 for (i = 0; i < bin_num; i++)
2414 if (strcmp (prog_dirs[i], bin_dirs[i]) != 0)
2418 if (prog_num <= 0 || i == bin_num)
2421 free_split_directories (prog_dirs);
2422 free_split_directories (bin_dirs);
2423 prog_dirs = bin_dirs = (char **) 0;
2428 prefix_dirs = split_directories (prefix, &prefix_num);
2430 /* Find how many directories are in common between bin_prefix & prefix. */
2431 n = (prefix_num < bin_num) ? prefix_num : bin_num;
2432 for (common = 0; common < n; common++)
2434 if (strcmp (bin_dirs[common], prefix_dirs[common]) != 0)
2438 /* If there are no common directories, there can be no relative prefix. */
2441 free_split_directories (prog_dirs);
2442 free_split_directories (bin_dirs);
2443 free_split_directories (prefix_dirs);
2447 /* Build up the pathnames in argv[0]. */
2448 for (i = 0; i < prog_num; i++)
2449 obstack_grow (&obstack, prog_dirs[i], strlen (prog_dirs[i]));
2451 /* Now build up the ..'s. */
2452 for (i = common; i < n; i++)
2454 obstack_grow (&obstack, DIR_UP, sizeof (DIR_UP) - 1);
2455 obstack_1grow (&obstack, DIR_SEPARATOR);
2458 /* Put in directories to move over to prefix. */
2459 for (i = common; i < prefix_num; i++)
2460 obstack_grow (&obstack, prefix_dirs[i], strlen (prefix_dirs[i]));
2462 free_split_directories (prog_dirs);
2463 free_split_directories (bin_dirs);
2464 free_split_directories (prefix_dirs);
2466 obstack_1grow (&obstack, '\0');
2467 return obstack_finish (&obstack);
2471 /* Check whether NAME can be accessed in MODE. This is like access,
2472 except that it never considers directories to be executable. */
2475 access_check (name, mode)
2483 if (stat (name, &st) < 0
2484 || S_ISDIR (st.st_mode))
2488 return access (name, mode);
2491 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2492 access to check permissions.
2493 Return 0 if not found, otherwise return its name, allocated with malloc. */
2496 find_a_file (pprefix, name, mode)
2497 struct path_prefix *pprefix;
2502 const char *const file_suffix =
2503 ((mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "");
2504 struct prefix_list *pl;
2505 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1;
2507 #ifdef DEFAULT_ASSEMBLER
2508 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2509 return xstrdup (DEFAULT_ASSEMBLER);
2512 #ifdef DEFAULT_LINKER
2513 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2514 return xstrdup (DEFAULT_LINKER);
2518 len += strlen (machine_suffix);
2520 temp = xmalloc (len);
2522 /* Determine the filename to execute (special case for absolute paths). */
2524 if (IS_ABSOLUTE_PATHNAME (name))
2526 if (access (name, mode) == 0)
2528 strcpy (temp, name);
2533 for (pl = pprefix->plist; pl; pl = pl->next)
2537 /* Some systems have a suffix for executable files.
2538 So try appending that first. */
2539 if (file_suffix[0] != 0)
2541 strcpy (temp, pl->prefix);
2542 strcat (temp, machine_suffix);
2543 strcat (temp, name);
2544 strcat (temp, file_suffix);
2545 if (access_check (temp, mode) == 0)
2547 if (pl->used_flag_ptr != 0)
2548 *pl->used_flag_ptr = 1;
2553 /* Now try just the name. */
2554 strcpy (temp, pl->prefix);
2555 strcat (temp, machine_suffix);
2556 strcat (temp, name);
2557 if (access_check (temp, mode) == 0)
2559 if (pl->used_flag_ptr != 0)
2560 *pl->used_flag_ptr = 1;
2565 /* Certain prefixes are tried with just the machine type,
2566 not the version. This is used for finding as, ld, etc. */
2567 if (just_machine_suffix && pl->require_machine_suffix == 2)
2569 /* Some systems have a suffix for executable files.
2570 So try appending that first. */
2571 if (file_suffix[0] != 0)
2573 strcpy (temp, pl->prefix);
2574 strcat (temp, just_machine_suffix);
2575 strcat (temp, name);
2576 strcat (temp, file_suffix);
2577 if (access_check (temp, mode) == 0)
2579 if (pl->used_flag_ptr != 0)
2580 *pl->used_flag_ptr = 1;
2585 strcpy (temp, pl->prefix);
2586 strcat (temp, just_machine_suffix);
2587 strcat (temp, name);
2588 if (access_check (temp, mode) == 0)
2590 if (pl->used_flag_ptr != 0)
2591 *pl->used_flag_ptr = 1;
2596 /* Certain prefixes can't be used without the machine suffix
2597 when the machine or version is explicitly specified. */
2598 if (! pl->require_machine_suffix)
2600 /* Some systems have a suffix for executable files.
2601 So try appending that first. */
2602 if (file_suffix[0] != 0)
2604 strcpy (temp, pl->prefix);
2605 strcat (temp, name);
2606 strcat (temp, file_suffix);
2607 if (access_check (temp, mode) == 0)
2609 if (pl->used_flag_ptr != 0)
2610 *pl->used_flag_ptr = 1;
2615 strcpy (temp, pl->prefix);
2616 strcat (temp, name);
2617 if (access_check (temp, mode) == 0)
2619 if (pl->used_flag_ptr != 0)
2620 *pl->used_flag_ptr = 1;
2630 /* Ranking of prefixes in the sort list. -B prefixes are put before
2633 enum path_prefix_priority
2635 PREFIX_PRIORITY_B_OPT,
2636 PREFIX_PRIORITY_LAST
2639 /* Add an entry for PREFIX in PLIST. The PLIST is kept in assending
2640 order according to PRIORITY. Within each PRIORITY, new entries are
2643 If WARN is nonzero, we will warn if no file is found
2644 through this prefix. WARN should point to an int
2645 which will be set to 1 if this entry is used.
2647 COMPONENT is the value to be passed to update_path.
2649 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2650 the complete value of machine_suffix.
2651 2 means try both machine_suffix and just_machine_suffix. */
2654 add_prefix (pprefix, prefix, component, priority, require_machine_suffix, warn)
2655 struct path_prefix *pprefix;
2657 const char *component;
2658 /* enum prefix_priority */ int priority;
2659 int require_machine_suffix;
2662 struct prefix_list *pl, **prev;
2665 for (prev = &pprefix->plist;
2666 (*prev) != NULL && (*prev)->priority <= priority;
2667 prev = &(*prev)->next)
2670 /* Keep track of the longest prefix */
2672 prefix = update_path (prefix, component);
2673 len = strlen (prefix);
2674 if (len > pprefix->max_len)
2675 pprefix->max_len = len;
2677 pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
2678 pl->prefix = prefix;
2679 pl->require_machine_suffix = require_machine_suffix;
2680 pl->used_flag_ptr = warn;
2681 pl->priority = priority;
2685 /* Insert after PREV */
2690 /* Execute the command specified by the arguments on the current line of spec.
2691 When using pipes, this includes several piped-together commands
2692 with `|' between them.
2694 Return 0 if successful, -1 if failed. */
2700 int n_commands; /* # of command. */
2704 const char *prog; /* program name. */
2705 const char **argv; /* vector of args. */
2706 int pid; /* pid of process for this command. */
2709 struct command *commands; /* each command buffer with above info. */
2711 /* Count # of piped commands. */
2712 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2713 if (strcmp (argbuf[i], "|") == 0)
2716 /* Get storage for each command. */
2717 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2719 /* Split argbuf into its separate piped processes,
2720 and record info about each one.
2721 Also search for the programs that are to be run. */
2723 commands[0].prog = argbuf[0]; /* first command. */
2724 commands[0].argv = &argbuf[0];
2725 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK);
2728 commands[0].argv[0] = string;
2730 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2731 if (strcmp (argbuf[i], "|") == 0)
2732 { /* each command. */
2733 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2734 fatal ("-pipe not supported");
2736 argbuf[i] = 0; /* termination of command args. */
2737 commands[n_commands].prog = argbuf[i + 1];
2738 commands[n_commands].argv = &argbuf[i + 1];
2739 string = find_a_file (&exec_prefixes, commands[n_commands].prog, X_OK);
2741 commands[n_commands].argv[0] = string;
2745 argbuf[argbuf_index] = 0;
2747 /* If -v, print what we are about to do, and maybe query. */
2751 /* For help listings, put a blank line between sub-processes. */
2752 if (print_help_list)
2753 fputc ('\n', stderr);
2755 /* Print each piped command as a separate line. */
2756 for (i = 0; i < n_commands; i++)
2758 const char *const *j;
2760 if (verbose_only_flag)
2762 for (j = commands[i].argv; *j; j++)
2765 fprintf (stderr, " \"");
2766 for (p = *j; *p; ++p)
2768 if (*p == '"' || *p == '\\' || *p == '$')
2769 fputc ('\\', stderr);
2772 fputc ('"', stderr);
2776 for (j = commands[i].argv; *j; j++)
2777 fprintf (stderr, " %s", *j);
2779 /* Print a pipe symbol after all but the last command. */
2780 if (i + 1 != n_commands)
2781 fprintf (stderr, " |");
2782 fprintf (stderr, "\n");
2785 if (verbose_only_flag != 0)
2788 notice ("\nGo ahead? (y or n) ");
2792 while (getchar () != '\n')
2795 if (i != 'y' && i != 'Y')
2800 /* Run each piped subprocess. */
2802 for (i = 0; i < n_commands; i++)
2804 char *errmsg_fmt, *errmsg_arg;
2805 const char *string = commands[i].argv[0];
2807 /* For some bizarre reason, the second argument of execvp() is
2808 char *const *, not const char *const *. */
2809 commands[i].pid = pexecute (string, (char *const *) commands[i].argv,
2810 programname, temp_filename,
2811 &errmsg_fmt, &errmsg_arg,
2812 ((i == 0 ? PEXECUTE_FIRST : 0)
2813 | (i + 1 == n_commands ? PEXECUTE_LAST : 0)
2814 | (string == commands[i].prog
2815 ? PEXECUTE_SEARCH : 0)
2816 | (verbose_flag ? PEXECUTE_VERBOSE : 0)));
2818 if (commands[i].pid == -1)
2819 pfatal_pexecute (errmsg_fmt, errmsg_arg);
2821 if (string != commands[i].prog)
2822 free ((PTR) string);
2827 /* Wait for all the subprocesses to finish.
2828 We don't care what order they finish in;
2829 we know that N_COMMANDS waits will get them all.
2830 Ignore subprocesses that we don't know about,
2831 since they can be spawned by the process that exec'ed us. */
2835 #ifdef HAVE_GETRUSAGE
2837 double ut = 0.0, st = 0.0;
2840 for (i = 0; i < n_commands;)
2846 pid = pwait (commands[i].pid, &status, 0);
2850 #ifdef HAVE_GETRUSAGE
2853 /* getrusage returns the total resource usage of all children
2854 up to now. Copy the previous values into prus, get the
2855 current statistics, then take the difference. */
2858 getrusage (RUSAGE_CHILDREN, &rus);
2859 d.tv_sec = rus.ru_utime.tv_sec - prus.ru_utime.tv_sec;
2860 d.tv_usec = rus.ru_utime.tv_usec - prus.ru_utime.tv_usec;
2861 ut = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2863 d.tv_sec = rus.ru_stime.tv_sec - prus.ru_stime.tv_sec;
2864 d.tv_usec = rus.ru_stime.tv_usec - prus.ru_stime.tv_usec;
2865 st = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2869 for (j = 0; j < n_commands; j++)
2870 if (commands[j].pid == pid)
2873 if (WIFSIGNALED (status))
2876 /* SIGPIPE is a special case. It happens in -pipe mode
2877 when the compiler dies before the preprocessor is
2878 done, or the assembler dies before the compiler is
2879 done. There's generally been an error already, and
2880 this is just fallout. So don't generate another error
2881 unless we would otherwise have succeeded. */
2882 if (WTERMSIG (status) == SIGPIPE
2883 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2888 Internal error: %s (program %s)\n\
2889 Please submit a full bug report.\n\
2890 See %s for instructions.",
2891 strsignal (WTERMSIG (status)), commands[j].prog,
2896 else if (WIFEXITED (status)
2897 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2899 if (WEXITSTATUS (status) > greatest_status)
2900 greatest_status = WEXITSTATUS (status);
2903 #ifdef HAVE_GETRUSAGE
2904 if (report_times && ut + st != 0)
2905 notice ("# %s %.2f %.2f\n", commands[j].prog, ut, st);
2914 /* Find all the switches given to us
2915 and make a vector describing them.
2916 The elements of the vector are strings, one per switch given.
2917 If a switch uses following arguments, then the `part1' field
2918 is the switch itself and the `args' field
2919 is a null-terminated vector containing the following arguments.
2920 The `live_cond' field is:
2922 1 if the switch is true in a conditional spec,
2923 -1 if false (overridden by a later switch)
2924 -2 if this switch should be ignored (used in %{<S})
2925 The `validated' field is nonzero if any spec has looked at this switch;
2926 if it remains zero at the end of the run, it must be meaningless. */
2929 #define SWITCH_FALSE -1
2930 #define SWITCH_IGNORE -2
2931 #define SWITCH_LIVE 1
2938 unsigned char validated;
2939 unsigned char ordering;
2942 static struct switchstr *switches;
2944 static int n_switches;
2949 const char *language;
2952 /* Also a vector of input files specified. */
2954 static struct infile *infiles;
2958 /* This counts the number of libraries added by lang_specific_driver, so that
2959 we can tell if there were any user supplied any files or libraries. */
2961 static int added_libraries;
2963 /* And a vector of corresponding output files is made up later. */
2965 const char **outfiles;
2967 /* Used to track if none of the -B paths are used. */
2970 /* Gives value to pass as "warn" to add_prefix for standard prefixes. */
2971 static int *warn_std_ptr = 0;
2973 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2975 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2976 is true if we should look for an executable suffix. DO_OBJ
2977 is true if we should look for an object suffix. */
2980 convert_filename (name, do_exe, do_obj)
2982 int do_exe ATTRIBUTE_UNUSED;
2983 int do_obj ATTRIBUTE_UNUSED;
2985 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2993 len = strlen (name);
2995 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2996 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2997 if (do_obj && len > 2
2998 && name[len - 2] == '.'
2999 && name[len - 1] == 'o')
3001 obstack_grow (&obstack, name, len - 2);
3002 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
3003 name = obstack_finish (&obstack);
3007 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3008 /* If there is no filetype, make it the executable suffix (which includes
3009 the "."). But don't get confused if we have just "-o". */
3010 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
3013 for (i = len - 1; i >= 0; i--)
3014 if (IS_DIR_SEPARATOR (name[i]))
3017 for (i++; i < len; i++)
3021 obstack_grow (&obstack, name, len);
3022 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
3023 strlen (TARGET_EXECUTABLE_SUFFIX));
3024 name = obstack_finish (&obstack);
3031 /* Display the command line switches accepted by gcc. */
3035 printf (_("Usage: %s [options] file...\n"), programname);
3036 fputs (_("Options:\n"), stdout);
3038 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
3039 fputs (_(" --help Display this information\n"), stdout);
3040 fputs (_(" --target-help Display target specific command line options\n"), stdout);
3042 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
3043 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
3044 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
3045 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
3046 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
3047 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
3048 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
3049 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
3050 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
3052 -print-multi-lib Display the mapping between command line options and\n\
3053 multiple library search directories\n"), stdout);
3054 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3055 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3056 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3057 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3058 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3059 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3060 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3061 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3062 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3063 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3064 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
3065 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
3066 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3067 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3068 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3069 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3070 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3071 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3073 -x <language> Specify the language of the following input files\n\
3074 Permissable languages include: c c++ assembler none\n\
3075 'none' means revert to the default behavior of\n\
3076 guessing the language based on the file's extension\n\
3080 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3081 passed on to the various sub-processes invoked by %s. In order to pass\n\
3082 other options on to these processes the -W<letter> options must be used.\n\
3085 /* The rest of the options are displayed by invocations of the various
3090 add_preprocessor_option (option, len)
3094 n_preprocessor_options++;
3096 if (! preprocessor_options)
3097 preprocessor_options
3098 = (char **) xmalloc (n_preprocessor_options * sizeof (char *));
3100 preprocessor_options
3101 = (char **) xrealloc (preprocessor_options,
3102 n_preprocessor_options * sizeof (char *));
3104 preprocessor_options [n_preprocessor_options - 1] =
3105 save_string (option, len);
3109 add_assembler_option (option, len)
3113 n_assembler_options++;
3115 if (! assembler_options)
3117 = (char **) xmalloc (n_assembler_options * sizeof (char *));
3120 = (char **) xrealloc (assembler_options,
3121 n_assembler_options * sizeof (char *));
3123 assembler_options [n_assembler_options - 1] = save_string (option, len);
3127 add_linker_option (option, len)
3133 if (! linker_options)
3135 = (char **) xmalloc (n_linker_options * sizeof (char *));
3138 = (char **) xrealloc (linker_options,
3139 n_linker_options * sizeof (char *));
3141 linker_options [n_linker_options - 1] = save_string (option, len);
3144 /* Create the vector `switches' and its contents.
3145 Store its length in `n_switches'. */
3148 process_command (argc, argv)
3150 const char *const *argv;
3155 const char *spec_lang = 0;
3156 int last_language_n_infiles;
3159 int lang_n_infiles = 0;
3160 #ifdef MODIFY_TARGET_NAME
3161 int is_modify_target_name;
3165 GET_ENV_PATH_LIST (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3169 added_libraries = 0;
3171 /* Figure compiler version from version string. */
3173 compiler_version = temp1 = xstrdup (version_string);
3175 for (; *temp1; ++temp1)
3184 /* If there is a -V or -b option (or both), process it now, before
3185 trying to interpret the rest of the command line. */
3186 if (argc > 1 && argv[1][0] == '-'
3187 && (argv[1][1] == 'V' || argv[1][1] == 'b'))
3189 const char *new_version = DEFAULT_TARGET_VERSION;
3190 const char *new_machine = DEFAULT_TARGET_MACHINE;
3191 const char *progname = argv[0];
3196 while (argc > 1 && argv[1][0] == '-'
3197 && (argv[1][1] == 'V' || argv[1][1] == 'b'))
3199 char opt = argv[1][1];
3201 if (argv[1][2] != '\0')
3214 fatal ("`-%c' option must have argument", opt);
3221 for (baselen = strlen (progname); baselen > 0; baselen--)
3222 if (IS_DIR_SEPARATOR (progname[baselen-1]))
3224 new_argv0 = xmemdup (progname, baselen,
3225 baselen + concat_length (new_version, new_machine,
3226 "-gcc-", NULL) + 1);
3227 strcpy (new_argv0 + baselen, new_machine);
3228 strcat (new_argv0, "-gcc-");
3229 strcat (new_argv0, new_version);
3231 new_argv = xmemdup (argv, (argc + 1) * sizeof (argv[0]),
3232 (argc + 1) * sizeof (argv[0]));
3233 new_argv[0] = new_argv0;
3235 execvp (new_argv0, new_argv);
3236 fatal ("couldn't run `%s': %s", new_argv0, xstrerror (errno));
3239 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3240 see if we can create it from the pathname specified in argv[0]. */
3243 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3244 if (!gcc_exec_prefix)
3246 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
3247 standard_exec_prefix);
3248 if (gcc_exec_prefix)
3249 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3253 if (gcc_exec_prefix)
3255 int len = strlen (gcc_exec_prefix);
3257 if (len > (int) sizeof ("/lib/gcc-lib/") - 1
3258 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3260 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc-lib/") + 1;
3261 if (IS_DIR_SEPARATOR (*temp)
3262 && strncmp (temp + 1, "lib", 3) == 0
3263 && IS_DIR_SEPARATOR (temp[4])
3264 && strncmp (temp + 5, "gcc-lib", 7) == 0)
3265 len -= sizeof ("/lib/gcc-lib/") - 1;
3268 set_std_prefix (gcc_exec_prefix, len);
3269 add_prefix (&exec_prefixes, gcc_exec_prefix, "GCC",
3270 PREFIX_PRIORITY_LAST, 0, NULL);
3271 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3272 PREFIX_PRIORITY_LAST, 0, NULL);
3275 /* COMPILER_PATH and LIBRARY_PATH have values
3276 that are lists of directory names with colons. */
3278 GET_ENV_PATH_LIST (temp, "COMPILER_PATH");
3281 const char *startp, *endp;
3282 char *nstore = (char *) alloca (strlen (temp) + 3);
3284 startp = endp = temp;
3287 if (*endp == PATH_SEPARATOR || *endp == 0)
3289 strncpy (nstore, startp, endp - startp);
3291 strcpy (nstore, concat (".", dir_separator_str, NULL));
3292 else if (!IS_DIR_SEPARATOR (endp[-1]))
3294 nstore[endp - startp] = DIR_SEPARATOR;
3295 nstore[endp - startp + 1] = 0;
3298 nstore[endp - startp] = 0;
3299 add_prefix (&exec_prefixes, nstore, 0,
3300 PREFIX_PRIORITY_LAST, 0, NULL);
3301 add_prefix (&include_prefixes,
3302 concat (nstore, "include", NULL),
3303 0, PREFIX_PRIORITY_LAST, 0, NULL);
3306 endp = startp = endp + 1;
3313 GET_ENV_PATH_LIST (temp, LIBRARY_PATH_ENV);
3314 if (temp && *cross_compile == '0')
3316 const char *startp, *endp;
3317 char *nstore = (char *) alloca (strlen (temp) + 3);
3319 startp = endp = temp;
3322 if (*endp == PATH_SEPARATOR || *endp == 0)
3324 strncpy (nstore, startp, endp - startp);
3326 strcpy (nstore, concat (".", dir_separator_str, NULL));
3327 else if (!IS_DIR_SEPARATOR (endp[-1]))
3329 nstore[endp - startp] = DIR_SEPARATOR;
3330 nstore[endp - startp + 1] = 0;
3333 nstore[endp - startp] = 0;
3334 add_prefix (&startfile_prefixes, nstore, NULL,
3335 PREFIX_PRIORITY_LAST, 0, NULL);
3338 endp = startp = endp + 1;
3345 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3346 GET_ENV_PATH_LIST (temp, "LPATH");
3347 if (temp && *cross_compile == '0')
3349 const char *startp, *endp;
3350 char *nstore = (char *) alloca (strlen (temp) + 3);
3352 startp = endp = temp;
3355 if (*endp == PATH_SEPARATOR || *endp == 0)
3357 strncpy (nstore, startp, endp - startp);
3359 strcpy (nstore, concat (".", dir_separator_str, NULL));
3360 else if (!IS_DIR_SEPARATOR (endp[-1]))
3362 nstore[endp - startp] = DIR_SEPARATOR;
3363 nstore[endp - startp + 1] = 0;
3366 nstore[endp - startp] = 0;
3367 add_prefix (&startfile_prefixes, nstore, NULL,
3368 PREFIX_PRIORITY_LAST, 0, NULL);
3371 endp = startp = endp + 1;
3378 /* Convert new-style -- options to old-style. */
3379 translate_options (&argc, &argv);
3381 /* Do language-specific adjustment/addition of flags. */
3382 lang_specific_driver (&argc, &argv, &added_libraries);
3384 /* Scan argv twice. Here, the first time, just count how many switches
3385 there will be in their vector, and how many input files in theirs.
3386 Here we also parse the switches that cc itself uses (e.g. -v). */
3388 for (i = 1; i < argc; i++)
3390 if (! strcmp (argv[i], "-dumpspecs"))
3392 struct spec_list *sl;
3394 for (sl = specs; sl; sl = sl->next)
3395 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3396 if (link_command_spec)
3397 printf ("*link_command:\n%s\n\n", link_command_spec);
3400 else if (! strcmp (argv[i], "-dumpversion"))
3402 printf ("%s\n", spec_version);
3405 else if (! strcmp (argv[i], "-dumpmachine"))
3407 printf ("%s\n", spec_machine);
3410 else if (strcmp (argv[i], "-fversion") == 0)
3412 /* translate_options () has turned --version into -fversion. */
3413 printf (_("%s (GCC) %s\n"), programname, version_string);
3414 fputs (_("Copyright (C) 2002 Free Software Foundation, Inc.\n"),
3416 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
3417 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
3421 else if (strcmp (argv[i], "-fhelp") == 0)
3423 /* translate_options () has turned --help into -fhelp. */
3424 print_help_list = 1;
3426 /* We will be passing a dummy file on to the sub-processes. */
3430 /* CPP driver cannot obtain switch from cc1_options. */
3432 add_preprocessor_option ("--help", 6);
3433 add_assembler_option ("--help", 6);
3434 add_linker_option ("--help", 6);
3436 else if (strcmp (argv[i], "-ftarget-help") == 0)
3438 /* translate_options() has turned --target-help into -ftarget-help. */
3439 target_help_flag = 1;
3441 /* We will be passing a dummy file on to the sub-processes. */
3445 /* CPP driver cannot obtain switch from cc1_options. */
3447 add_preprocessor_option ("--target-help", 13);
3448 add_assembler_option ("--target-help", 13);
3449 add_linker_option ("--target-help", 13);
3451 else if (! strcmp (argv[i], "-pass-exit-codes"))
3453 pass_exit_codes = 1;
3456 else if (! strcmp (argv[i], "-print-search-dirs"))
3457 print_search_dirs = 1;
3458 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3459 print_file_name = "libgcc.a";
3460 else if (! strncmp (argv[i], "-print-file-name=", 17))
3461 print_file_name = argv[i] + 17;
3462 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3463 print_prog_name = argv[i] + 17;
3464 else if (! strcmp (argv[i], "-print-multi-lib"))
3465 print_multi_lib = 1;
3466 else if (! strcmp (argv[i], "-print-multi-directory"))
3467 print_multi_directory = 1;
3468 else if (! strncmp (argv[i], "-Wa,", 4))
3471 /* Pass the rest of this option to the assembler. */
3473 /* Split the argument at commas. */
3475 for (j = 4; argv[i][j]; j++)
3476 if (argv[i][j] == ',')
3478 add_assembler_option (argv[i] + prev, j - prev);
3482 /* Record the part after the last comma. */
3483 add_assembler_option (argv[i] + prev, j - prev);
3485 else if (! strncmp (argv[i], "-Wp,", 4))
3488 /* Pass the rest of this option to the preprocessor. */
3490 /* Split the argument at commas. */
3492 for (j = 4; argv[i][j]; j++)
3493 if (argv[i][j] == ',')
3495 add_preprocessor_option (argv[i] + prev, j - prev);
3499 /* Record the part after the last comma. */
3500 add_preprocessor_option (argv[i] + prev, j - prev);
3502 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3503 /* The +e options to the C++ front-end. */
3505 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3508 /* Split the argument at commas. */
3509 for (j = 3; argv[i][j]; j++)
3510 n_infiles += (argv[i][j] == ',');
3512 else if (strcmp (argv[i], "-Xlinker") == 0)
3515 fatal ("argument to `-Xlinker' is missing");
3520 else if (strcmp (argv[i], "-l") == 0)
3523 fatal ("argument to `-l' is missing");
3528 else if (strncmp (argv[i], "-l", 2) == 0)
3530 else if (strcmp (argv[i], "-save-temps") == 0)
3532 save_temps_flag = 1;
3535 else if (strcmp (argv[i], "-specs") == 0)
3537 struct user_specs *user = (struct user_specs *)
3538 xmalloc (sizeof (struct user_specs));
3540 fatal ("argument to `-specs' is missing");
3542 user->next = (struct user_specs *) 0;
3543 user->filename = argv[i];
3544 if (user_specs_tail)
3545 user_specs_tail->next = user;
3547 user_specs_head = user;
3548 user_specs_tail = user;
3550 else if (strncmp (argv[i], "-specs=", 7) == 0)
3552 struct user_specs *user = (struct user_specs *)
3553 xmalloc (sizeof (struct user_specs));
3554 if (strlen (argv[i]) == 7)
3555 fatal ("argument to `-specs=' is missing");
3557 user->next = (struct user_specs *) 0;
3558 user->filename = argv[i] + 7;
3559 if (user_specs_tail)
3560 user_specs_tail->next = user;
3562 user_specs_head = user;
3563 user_specs_tail = user;
3565 else if (strcmp (argv[i], "-time") == 0)
3567 else if (strcmp (argv[i], "-###") == 0)
3569 /* This is similar to -v except that there is no execution
3570 of the commands and the echoed arguments are quoted. It
3571 is intended for use in shell scripts to capture the
3572 driver-generated command line. */
3573 verbose_only_flag++;
3576 else if (argv[i][0] == '-' && argv[i][1] != 0)
3578 const char *p = &argv[i][1];
3585 fatal ("`-%c' must come at the start of the command line", c);
3593 if (p[1] == 0 && i + 1 == argc)
3594 fatal ("argument to `-B' is missing");
3600 len = strlen (value);
3602 /* Catch the case where the user has forgotten to append a
3603 directory separator to the path. Note, they may be using
3604 -B to add an executable name prefix, eg "i386-elf-", in
3605 order to distinguish between multiple installations of
3606 GCC in the same directory. Hence we must check to see
3607 if appending a directory separator actually makes a
3608 valid directory name. */
3609 if (! IS_DIR_SEPARATOR (value [len - 1])
3610 && is_directory (value, "", 0))
3612 char *tmp = xmalloc (len + 2);
3613 strcpy (tmp, value);
3614 tmp[len] = DIR_SEPARATOR;
3619 /* As a kludge, if the arg is "[foo/]stageN/", just
3620 add "[foo/]include" to the include prefix. */
3623 && (IS_DIR_SEPARATOR (value[len - 8]))))
3624 && strncmp (value + len - 7, "stage", 5) == 0
3625 && ISDIGIT (value[len - 2])
3626 && (IS_DIR_SEPARATOR (value[len - 1])))
3629 add_prefix (&include_prefixes, "include", NULL,
3630 PREFIX_PRIORITY_B_OPT, 0, NULL);
3633 char * string = xmalloc (len + 1);
3635 strncpy (string, value, len - 7);
3636 strcpy (string + len - 7, "include");
3637 add_prefix (&include_prefixes, string, NULL,
3638 PREFIX_PRIORITY_B_OPT, 0, NULL);
3642 add_prefix (&exec_prefixes, value, NULL,
3643 PREFIX_PRIORITY_B_OPT, 0, &warn_B);
3644 add_prefix (&startfile_prefixes, value, NULL,
3645 PREFIX_PRIORITY_B_OPT, 0, &warn_B);
3646 add_prefix (&include_prefixes, concat (value, "include", NULL),
3647 NULL, PREFIX_PRIORITY_B_OPT, 0, NULL);
3652 case 'v': /* Print our subcommands and print versions. */
3654 /* If they do anything other than exactly `-v', don't set
3655 verbose_flag; rather, continue on to give the error. */
3673 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3678 /* Forward scan, just in case -S or -c is specified
3685 if (argv[j][0] == '-')
3687 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
3693 else if ((skip = SWITCH_TAKES_ARG (argv[j][1])))
3694 j += skip - (argv[j][2] != 0);
3695 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1)))
3702 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3704 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0);
3706 argv[i] = convert_filename (argv[i], ! have_c, 0);
3713 #ifdef MODIFY_TARGET_NAME
3714 is_modify_target_name = 0;
3716 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3717 if (! strcmp (argv[i], modify_target[j].sw))
3720 = (char *) xmalloc (strlen (modify_target[j].str)
3721 + strlen (spec_machine));
3724 int made_addition = 0;
3726 is_modify_target_name = 1;
3727 for (p = spec_machine, q = new_name; *p != 0; )
3729 if (modify_target[j].add_del == DELETE
3730 && (! strncmp (q, modify_target[j].str,
3731 strlen (modify_target[j].str))))
3732 p += strlen (modify_target[j].str);
3733 else if (modify_target[j].add_del == ADD
3734 && ! made_addition && *p == '-')
3736 for (r = modify_target[j].str; *r != 0; )
3744 spec_machine = new_name;
3747 if (is_modify_target_name)
3753 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
3754 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
3755 else if (WORD_SWITCH_TAKES_ARG (p))
3756 i += WORD_SWITCH_TAKES_ARG (p);
3766 if (have_c && have_o && lang_n_infiles > 1)
3767 fatal ("cannot specify -o with -c or -S and multiple compilations");
3769 /* Set up the search paths before we go looking for config files. */
3771 /* These come before the md prefixes so that we will find gcc's subcommands
3772 (such as cpp) rather than those of the host system. */
3773 /* Use 2 as fourth arg meaning try just the machine as a suffix,
3774 as well as trying the machine and the version. */
3776 add_prefix (&exec_prefixes, standard_exec_prefix, "GCC",
3777 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3778 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3779 PREFIX_PRIORITY_LAST, 2, warn_std_ptr);
3780 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS",
3781 PREFIX_PRIORITY_LAST, 2, warn_std_ptr);
3784 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3785 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3786 add_prefix (&startfile_prefixes, standard_exec_prefix_1, "BINUTILS",
3787 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3789 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3790 dir_separator_str, NULL);
3792 /* If tooldir is relative, base it on exec_prefixes. A relative
3793 tooldir lets us move the installed tree as a unit.
3795 If GCC_EXEC_PREFIX is defined, then we want to add two relative
3796 directories, so that we can search both the user specified directory
3797 and the standard place. */
3799 if (!IS_ABSOLUTE_PATHNAME (tooldir_prefix))
3801 if (gcc_exec_prefix)
3803 char *gcc_exec_tooldir_prefix
3804 = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
3805 spec_version, dir_separator_str, tooldir_prefix, NULL);
3807 add_prefix (&exec_prefixes,
3808 concat (gcc_exec_tooldir_prefix, "bin",
3809 dir_separator_str, NULL),
3810 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
3811 add_prefix (&startfile_prefixes,
3812 concat (gcc_exec_tooldir_prefix, "lib",
3813 dir_separator_str, NULL),
3814 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
3817 tooldir_prefix = concat (standard_exec_prefix, spec_machine,
3818 dir_separator_str, spec_version,
3819 dir_separator_str, tooldir_prefix, NULL);
3822 add_prefix (&exec_prefixes,
3823 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3824 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
3825 add_prefix (&startfile_prefixes,
3826 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3827 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
3829 /* More prefixes are enabled in main, after we read the specs file
3830 and determine whether this is cross-compilation or not. */
3832 /* Then create the space for the vectors and scan again. */
3834 switches = ((struct switchstr *)
3835 xmalloc ((n_switches + 1) * sizeof (struct switchstr)));
3836 infiles = (struct infile *) xmalloc ((n_infiles + 1) * sizeof (struct infile));
3839 last_language_n_infiles = -1;
3841 /* This, time, copy the text of each switch and store a pointer
3842 to the copy in the vector of switches.
3843 Store all the infiles in their vector. */
3845 for (i = 1; i < argc; i++)
3847 /* Just skip the switches that were handled by the preceding loop. */
3848 #ifdef MODIFY_TARGET_NAME
3849 is_modify_target_name = 0;
3851 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3852 if (! strcmp (argv[i], modify_target[j].sw))
3853 is_modify_target_name = 1;
3855 if (is_modify_target_name)
3859 if (! strncmp (argv[i], "-Wa,", 4))
3861 else if (! strncmp (argv[i], "-Wp,", 4))
3863 else if (! strcmp (argv[i], "-pass-exit-codes"))
3865 else if (! strcmp (argv[i], "-print-search-dirs"))
3867 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3869 else if (! strncmp (argv[i], "-print-file-name=", 17))
3871 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3873 else if (! strcmp (argv[i], "-print-multi-lib"))
3875 else if (! strcmp (argv[i], "-print-multi-directory"))
3877 else if (! strcmp (argv[i], "-ftarget-help"))
3879 else if (! strcmp (argv[i], "-fhelp"))
3881 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3883 /* Compensate for the +e options to the C++ front-end;
3884 they're there simply for cfront call-compatibility. We do
3885 some magic in default_compilers to pass them down properly.
3886 Note we deliberately start at the `+' here, to avoid passing
3887 -e0 or -e1 down into the linker. */
3888 switches[n_switches].part1 = &argv[i][0];
3889 switches[n_switches].args = 0;
3890 switches[n_switches].live_cond = SWITCH_OK;
3891 switches[n_switches].validated = 0;
3894 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3897 /* Split the argument at commas. */
3899 for (j = 4; argv[i][j]; j++)
3900 if (argv[i][j] == ',')
3902 infiles[n_infiles].language = "*";
3903 infiles[n_infiles++].name
3904 = save_string (argv[i] + prev, j - prev);
3907 /* Record the part after the last comma. */
3908 infiles[n_infiles].language = "*";
3909 infiles[n_infiles++].name = argv[i] + prev;
3911 else if (strcmp (argv[i], "-Xlinker") == 0)
3913 infiles[n_infiles].language = "*";
3914 infiles[n_infiles++].name = argv[++i];
3916 else if (strcmp (argv[i], "-l") == 0)
3917 { /* POSIX allows separation of -l and the lib arg;
3918 canonicalize by concatenating -l with its arg */
3919 infiles[n_infiles].language = "*";
3920 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL);
3922 else if (strncmp (argv[i], "-l", 2) == 0)
3924 infiles[n_infiles].language = "*";
3925 infiles[n_infiles++].name = argv[i];
3927 else if (strcmp (argv[i], "-specs") == 0)
3929 else if (strncmp (argv[i], "-specs=", 7) == 0)
3931 else if (strcmp (argv[i], "-time") == 0)
3933 else if ((save_temps_flag || report_times)
3934 && strcmp (argv[i], "-pipe") == 0)
3936 /* -save-temps overrides -pipe, so that temp files are produced */
3937 if (save_temps_flag)
3938 error ("warning: -pipe ignored because -save-temps specified");
3939 /* -time overrides -pipe because we can't get correct stats when
3940 multiple children are running at once. */
3941 else if (report_times)
3942 error ("warning: -pipe ignored because -time specified");
3944 else if (strcmp (argv[i], "-###") == 0)
3946 else if (argv[i][0] == '-' && argv[i][1] != 0)
3948 const char *p = &argv[i][1];
3953 if (p[1] == 0 && i + 1 == argc)
3954 fatal ("argument to `-x' is missing");
3956 spec_lang = argv[++i];
3959 if (! strcmp (spec_lang, "none"))
3960 /* Suppress the warning if -xnone comes after the last input
3961 file, because alternate command interfaces like g++ might
3962 find it useful to place -xnone after each input file. */
3965 last_language_n_infiles = n_infiles;
3968 switches[n_switches].part1 = p;
3969 /* Deal with option arguments in separate argv elements. */
3970 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
3971 || WORD_SWITCH_TAKES_ARG (p))
3974 int n_args = WORD_SWITCH_TAKES_ARG (p);
3978 /* Count only the option arguments in separate argv elements. */
3979 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
3981 if (i + n_args >= argc)
3982 fatal ("argument to `-%s' is missing", p);
3983 switches[n_switches].args
3984 = (const char **) xmalloc ((n_args + 1) * sizeof(const char *));
3986 switches[n_switches].args[j++] = argv[++i];
3987 /* Null-terminate the vector. */
3988 switches[n_switches].args[j] = 0;
3990 else if (strchr (switches_need_spaces, c))
3992 /* On some systems, ld cannot handle some options without
3993 a space. So split the option from its argument. */
3994 char *part1 = (char *) xmalloc (2);
3998 switches[n_switches].part1 = part1;
3999 switches[n_switches].args
4000 = (const char **) xmalloc (2 * sizeof (const char *));
4001 switches[n_switches].args[0] = xstrdup (p+1);
4002 switches[n_switches].args[1] = 0;
4005 switches[n_switches].args = 0;
4007 switches[n_switches].live_cond = SWITCH_OK;
4008 switches[n_switches].validated = 0;
4009 switches[n_switches].ordering = 0;
4010 /* These are always valid, since gcc.c itself understands it. */
4011 if (!strcmp (p, "save-temps")
4012 || !strcmp (p, "static-libgcc")
4013 || !strcmp (p, "shared-libgcc"))
4014 switches[n_switches].validated = 1;
4017 char ch = switches[n_switches].part1[0];
4019 switches[n_switches].validated = 1;
4025 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4026 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
4029 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
4031 perror_with_name (argv[i]);
4036 infiles[n_infiles].language = spec_lang;
4037 infiles[n_infiles++].name = argv[i];
4042 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4043 error ("warning: `-x %s' after last input file has no effect", spec_lang);
4045 /* Ensure we only invoke each subprocess once. */
4046 if (target_help_flag || print_help_list)
4050 /* Create a dummy input file, so that we can pass --target-help on to
4051 the various sub-processes. */
4052 infiles[0].language = "c";
4053 infiles[0].name = "help-dummy";
4055 if (target_help_flag)
4057 switches[n_switches].part1 = "--target-help";
4058 switches[n_switches].args = 0;
4059 switches[n_switches].live_cond = SWITCH_OK;
4060 switches[n_switches].validated = 0;
4065 if (print_help_list)
4067 switches[n_switches].part1 = "--help";
4068 switches[n_switches].args = 0;
4069 switches[n_switches].live_cond = SWITCH_OK;
4070 switches[n_switches].validated = 0;
4076 switches[n_switches].part1 = 0;
4077 infiles[n_infiles].name = 0;
4080 /* Store switches not filtered out by %{<S} in spec in COLLECT_GCC_OPTIONS
4081 and place that in the environment. */
4084 set_collect_gcc_options ()
4089 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4091 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4092 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4095 for (i = 0; (int) i < n_switches; i++)
4097 const char *const *args;
4100 obstack_grow (&collect_obstack, " ", 1);
4104 /* Ignore elided switches. */
4105 if (switches[i].live_cond == SWITCH_IGNORE)
4108 obstack_grow (&collect_obstack, "'-", 2);
4109 q = switches[i].part1;
4110 while ((p = strchr (q, '\'')))
4112 obstack_grow (&collect_obstack, q, p - q);
4113 obstack_grow (&collect_obstack, "'\\''", 4);
4116 obstack_grow (&collect_obstack, q, strlen (q));
4117 obstack_grow (&collect_obstack, "'", 1);
4119 for (args = switches[i].args; args && *args; args++)
4121 obstack_grow (&collect_obstack, " '", 2);
4123 while ((p = strchr (q, '\'')))
4125 obstack_grow (&collect_obstack, q, p - q);
4126 obstack_grow (&collect_obstack, "'\\''", 4);
4129 obstack_grow (&collect_obstack, q, strlen (q));
4130 obstack_grow (&collect_obstack, "'", 1);
4133 obstack_grow (&collect_obstack, "\0", 1);
4134 putenv (obstack_finish (&collect_obstack));
4137 /* Process a spec string, accumulating and running commands. */
4139 /* These variables describe the input file name.
4140 input_file_number is the index on outfiles of this file,
4141 so that the output file name can be stored for later use by %o.
4142 input_basename is the start of the part of the input file
4143 sans all directory names, and basename_length is the number
4144 of characters starting there excluding the suffix .c or whatever. */
4146 const char *input_filename;
4147 static int input_file_number;
4148 size_t input_filename_length;
4149 static int basename_length;
4150 static int suffixed_basename_length;
4151 static const char *input_basename;
4152 static const char *input_suffix;
4153 static struct stat input_stat;
4154 static int input_stat_set;
4156 /* The compiler used to process the current input file. */
4157 static struct compiler *input_file_compiler;
4159 /* These are variables used within do_spec and do_spec_1. */
4161 /* Nonzero if an arg has been started and not yet terminated
4162 (with space, tab or newline). */
4163 static int arg_going;
4165 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4166 is a temporary file name. */
4167 static int delete_this_arg;
4169 /* Nonzero means %w has been seen; the next arg to be terminated
4170 is the output file name of this compilation. */
4171 static int this_is_output_file;
4173 /* Nonzero means %s has been seen; the next arg to be terminated
4174 is the name of a library file and we should try the standard
4175 search dirs for it. */
4176 static int this_is_library_file;
4178 /* Nonzero means that the input of this command is coming from a pipe. */
4179 static int input_from_pipe;
4181 /* Nonnull means substitute this for any suffix when outputting a switches
4183 static const char *suffix_subst;
4185 /* Process the spec SPEC and run the commands specified therein.
4186 Returns 0 if the spec is successfully processed; -1 if failed. */
4194 value = do_spec_2 (spec);
4196 /* Force out any unfinished command.
4197 If -pipe, this forces out the last command if it ended in `|'. */
4200 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4203 set_collect_gcc_options ();
4205 if (argbuf_index > 0)
4218 delete_this_arg = 0;
4219 this_is_output_file = 0;
4220 this_is_library_file = 0;
4221 input_from_pipe = 0;
4222 suffix_subst = NULL;
4224 return do_spec_1 (spec, 0, NULL);
4227 /* Process the sub-spec SPEC as a portion of a larger spec.
4228 This is like processing a whole spec except that we do
4229 not initialize at the beginning and we do not supply a
4230 newline by default at the end.
4231 INSWITCH nonzero means don't process %-sequences in SPEC;
4232 in this case, % is treated as an ordinary character.
4233 This is used while substituting switches.
4234 INSWITCH nonzero also causes SPC not to terminate an argument.
4236 Value is zero unless a line was finished
4237 and the command on that line reported an error. */
4240 do_spec_1 (spec, inswitch, soft_matched_part)
4243 const char *soft_matched_part;
4245 const char *p = spec;
4252 /* If substituting a switch, treat all chars like letters.
4253 Otherwise, NL, SPC, TAB and % are special. */
4254 switch (inswitch ? 'a' : c)
4257 /* End of line: finish any pending argument,
4258 then run the pending command if one has been started. */
4261 obstack_1grow (&obstack, 0);
4262 string = obstack_finish (&obstack);
4263 if (this_is_library_file)
4264 string = find_file (string);
4265 store_arg (string, delete_this_arg, this_is_output_file);
4266 if (this_is_output_file)
4267 outfiles[input_file_number] = string;
4271 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4273 for (i = 0; i < n_switches; i++)
4274 if (!strcmp (switches[i].part1, "pipe"))
4277 /* A `|' before the newline means use a pipe here,
4278 but only if -pipe was specified.
4279 Otherwise, execute now and don't pass the `|' as an arg. */
4282 input_from_pipe = 1;
4283 switches[i].validated = 1;
4290 set_collect_gcc_options ();
4292 if (argbuf_index > 0)
4298 /* Reinitialize for a new command, and for a new argument. */
4301 delete_this_arg = 0;
4302 this_is_output_file = 0;
4303 this_is_library_file = 0;
4304 input_from_pipe = 0;
4308 /* End any pending argument. */
4311 obstack_1grow (&obstack, 0);
4312 string = obstack_finish (&obstack);
4313 if (this_is_library_file)
4314 string = find_file (string);
4315 store_arg (string, delete_this_arg, this_is_output_file);
4316 if (this_is_output_file)
4317 outfiles[input_file_number] = string;
4321 obstack_1grow (&obstack, c);
4327 /* Space or tab ends an argument if one is pending. */
4330 obstack_1grow (&obstack, 0);
4331 string = obstack_finish (&obstack);
4332 if (this_is_library_file)
4333 string = find_file (string);
4334 store_arg (string, delete_this_arg, this_is_output_file);
4335 if (this_is_output_file)
4336 outfiles[input_file_number] = string;
4338 /* Reinitialize for a new argument. */
4340 delete_this_arg = 0;
4341 this_is_output_file = 0;
4342 this_is_library_file = 0;
4349 fatal ("invalid specification! Bug in cc");
4352 obstack_grow (&obstack, input_basename, basename_length);
4357 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4362 delete_this_arg = 2;
4365 /* Dump out the directories specified with LIBRARY_PATH,
4366 followed by the absolute directories
4367 that we search for startfiles. */
4370 struct prefix_list *pl = startfile_prefixes.plist;
4371 size_t bufsize = 100;
4372 char *buffer = (char *) xmalloc (bufsize);
4375 for (; pl; pl = pl->next)
4377 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4378 /* Used on systems which record the specified -L dirs
4379 and use them to search for dynamic linking. */
4380 /* Relative directories always come from -B,
4381 and it is better not to use them for searching
4382 at run time. In particular, stage1 loses. */
4383 if (!IS_ABSOLUTE_PATHNAME (pl->prefix))
4386 /* Try subdirectory if there is one. */
4387 if (multilib_dir != NULL)
4391 if (strlen (pl->prefix) + strlen (machine_suffix)
4393 bufsize = (strlen (pl->prefix)
4394 + strlen (machine_suffix)) * 2 + 1;
4395 buffer = (char *) xrealloc (buffer, bufsize);
4396 strcpy (buffer, pl->prefix);
4397 strcat (buffer, machine_suffix);
4398 if (is_directory (buffer, multilib_dir, 1))
4400 do_spec_1 ("-L", 0, NULL);
4401 #ifdef SPACE_AFTER_L_OPTION
4402 do_spec_1 (" ", 0, NULL);
4404 do_spec_1 (buffer, 1, NULL);
4405 do_spec_1 (multilib_dir, 1, NULL);
4406 /* Make this a separate argument. */
4407 do_spec_1 (" ", 0, NULL);
4410 if (!pl->require_machine_suffix)
4412 if (is_directory (pl->prefix, multilib_dir, 1))
4414 do_spec_1 ("-L", 0, NULL);
4415 #ifdef SPACE_AFTER_L_OPTION
4416 do_spec_1 (" ", 0, NULL);
4418 do_spec_1 (pl->prefix, 1, NULL);
4419 do_spec_1 (multilib_dir, 1, NULL);
4420 /* Make this a separate argument. */
4421 do_spec_1 (" ", 0, NULL);
4427 if (is_directory (pl->prefix, machine_suffix, 1))
4429 do_spec_1 ("-L", 0, NULL);
4430 #ifdef SPACE_AFTER_L_OPTION
4431 do_spec_1 (" ", 0, NULL);
4433 do_spec_1 (pl->prefix, 1, NULL);
4434 /* Remove slash from machine_suffix. */
4435 if (strlen (machine_suffix) >= bufsize)
4436 bufsize = strlen (machine_suffix) * 2 + 1;
4437 buffer = (char *) xrealloc (buffer, bufsize);
4438 strcpy (buffer, machine_suffix);
4439 idx = strlen (buffer);
4440 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4441 buffer[idx - 1] = 0;
4442 do_spec_1 (buffer, 1, NULL);
4443 /* Make this a separate argument. */
4444 do_spec_1 (" ", 0, NULL);
4447 if (!pl->require_machine_suffix)
4449 if (is_directory (pl->prefix, "", 1))
4451 do_spec_1 ("-L", 0, NULL);
4452 #ifdef SPACE_AFTER_L_OPTION
4453 do_spec_1 (" ", 0, NULL);
4455 /* Remove slash from pl->prefix. */
4456 if (strlen (pl->prefix) >= bufsize)
4457 bufsize = strlen (pl->prefix) * 2 + 1;
4458 buffer = (char *) xrealloc (buffer, bufsize);
4459 strcpy (buffer, pl->prefix);
4460 idx = strlen (buffer);
4461 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4462 buffer[idx - 1] = 0;
4463 do_spec_1 (buffer, 1, NULL);
4464 /* Make this a separate argument. */
4465 do_spec_1 (" ", 0, NULL);
4474 /* %efoo means report an error with `foo' as error message
4475 and don't execute any more commands for this file. */
4479 while (*p != 0 && *p != '\n')
4481 buf = (char *) alloca (p - q + 1);
4482 strncpy (buf, q, p - q);
4489 /* %nfoo means report an notice with `foo' on stderr. */
4493 while (*p != 0 && *p != '\n')
4495 buf = (char *) alloca (p - q + 1);
4496 strncpy (buf, q, p - q);
4498 notice ("%s\n", buf);
4508 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is defined,
4509 and it is not a directory, and it is writable, use it.
4510 Otherwise, fall through and treat this like any other
4513 if ((!save_temps_flag)
4514 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4515 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4517 obstack_grow (&obstack, HOST_BIT_BUCKET,
4518 strlen (HOST_BIT_BUCKET));
4519 delete_this_arg = 0;
4528 struct temp_name *t;
4530 const char *suffix = p;
4531 char *saved_suffix = NULL;
4533 while (*p == '.' || ISALPHA ((unsigned char) *p))
4535 suffix_length = p - suffix;
4536 if (p[0] == '%' && p[1] == 'O')
4539 /* We don't support extra suffix characters after %O. */
4540 if (*p == '.' || ISALPHA ((unsigned char) *p))
4542 if (suffix_length == 0)
4543 suffix = TARGET_OBJECT_SUFFIX;
4547 = (char *) xmalloc (suffix_length
4548 + strlen (TARGET_OBJECT_SUFFIX));
4549 strncpy (saved_suffix, suffix, suffix_length);
4550 strcpy (saved_suffix + suffix_length,
4551 TARGET_OBJECT_SUFFIX);
4553 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4556 /* If the input_filename has the same suffix specified
4557 for the %g, %u, or %U, and -save-temps is specified,
4558 we could end up using that file as an intermediate
4559 thus clobbering the user's source file (.e.g.,
4560 gcc -save-temps foo.s would clobber foo.s with the
4561 output of cpp0). So check for this condition and
4562 generate a temp file as the intermediate. */
4564 if (save_temps_flag)
4566 temp_filename_length = basename_length + suffix_length;
4567 temp_filename = alloca (temp_filename_length + 1);
4568 strncpy ((char *) temp_filename, input_basename, basename_length);
4569 strncpy ((char *) temp_filename + basename_length, suffix,
4571 *((char *) temp_filename + temp_filename_length) = '\0';
4572 if (strcmp (temp_filename, input_filename) != 0)
4574 struct stat st_temp;
4576 /* Note, set_input() resets input_stat_set to 0. */
4577 if (input_stat_set == 0)
4579 input_stat_set = stat (input_filename, &input_stat);
4580 if (input_stat_set >= 0)
4584 /* If we have the stat for the input_filename
4585 and we can do the stat for the temp_filename
4586 then the they could still refer to the same
4587 file if st_dev/st_ino's are the same. */
4589 if (input_stat_set != 1
4590 || stat (temp_filename, &st_temp) < 0
4591 || input_stat.st_dev != st_temp.st_dev
4592 || input_stat.st_ino != st_temp.st_ino)
4594 temp_filename = save_string (temp_filename,
4595 temp_filename_length + 1);
4596 obstack_grow (&obstack, temp_filename,
4597 temp_filename_length);
4604 /* See if we already have an association of %g/%u/%U and
4606 for (t = temp_names; t; t = t->next)
4607 if (t->length == suffix_length
4608 && strncmp (t->suffix, suffix, suffix_length) == 0
4609 && t->unique == (c != 'g'))
4612 /* Make a new association if needed. %u and %j
4614 if (t == 0 || c == 'u' || c == 'j')
4618 t = (struct temp_name *) xmalloc (sizeof (struct temp_name));
4619 t->next = temp_names;
4622 t->length = suffix_length;
4625 t->suffix = saved_suffix;
4626 saved_suffix = NULL;
4629 t->suffix = save_string (suffix, suffix_length);
4630 t->unique = (c != 'g');
4631 temp_filename = make_temp_file (t->suffix);
4632 temp_filename_length = strlen (temp_filename);
4633 t->filename = temp_filename;
4634 t->filename_length = temp_filename_length;
4638 free (saved_suffix);
4640 obstack_grow (&obstack, t->filename, t->filename_length);
4641 delete_this_arg = 1;
4647 obstack_grow (&obstack, input_filename, input_filename_length);
4653 struct prefix_list *pl = include_prefixes.plist;
4655 if (gcc_exec_prefix)
4657 do_spec_1 ("-iprefix", 1, NULL);
4658 /* Make this a separate argument. */
4659 do_spec_1 (" ", 0, NULL);
4660 do_spec_1 (gcc_exec_prefix, 1, NULL);
4661 do_spec_1 (" ", 0, NULL);
4664 for (; pl; pl = pl->next)
4666 do_spec_1 ("-isystem", 1, NULL);
4667 /* Make this a separate argument. */
4668 do_spec_1 (" ", 0, NULL);
4669 do_spec_1 (pl->prefix, 1, NULL);
4670 do_spec_1 (" ", 0, NULL);
4677 int max = n_infiles;
4678 max += lang_specific_extra_outfiles;
4680 for (i = 0; i < max; i++)
4682 store_arg (outfiles[i], 0, 0);
4687 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4692 this_is_library_file = 1;
4696 this_is_output_file = 1;
4701 int cur_index = argbuf_index;
4702 /* Handle the {...} following the %W. */
4705 p = handle_braces (p + 1);
4708 /* If any args were output, mark the last one for deletion
4710 if (argbuf_index != cur_index)
4711 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
4715 /* %x{OPTION} records OPTION for %X to output. */
4721 /* Skip past the option value and make a copy. */
4726 string = save_string (p1 + 1, p - p1 - 2);
4728 /* See if we already recorded this option. */
4729 for (i = 0; i < n_linker_options; i++)
4730 if (! strcmp (string, linker_options[i]))
4736 /* This option is new; add it. */
4737 add_linker_option (string, strlen (string));
4741 /* Dump out the options accumulated previously using %x. */
4743 for (i = 0; i < n_linker_options; i++)
4745 do_spec_1 (linker_options[i], 1, NULL);
4746 /* Make each accumulated option a separate argument. */
4747 do_spec_1 (" ", 0, NULL);
4751 /* Dump out the options accumulated previously using -Wa,. */
4753 for (i = 0; i < n_assembler_options; i++)
4755 do_spec_1 (assembler_options[i], 1, NULL);
4756 /* Make each accumulated option a separate argument. */
4757 do_spec_1 (" ", 0, NULL);
4761 /* Dump out the options accumulated previously using -Wp,. */
4763 for (i = 0; i < n_preprocessor_options; i++)
4765 do_spec_1 (preprocessor_options[i], 1, NULL);
4766 /* Make each accumulated option a separate argument. */
4767 do_spec_1 (" ", 0, NULL);
4771 /* Here are digits and numbers that just process
4772 a certain constant string as a spec. */
4775 value = do_spec_1 (cc1_spec, 0, NULL);
4781 value = do_spec_1 (cc1plus_spec, 0, NULL);
4787 value = do_spec_1 (asm_spec, 0, NULL);
4793 value = do_spec_1 (asm_final_spec, 0, NULL);
4800 const char *const spec
4801 = (input_file_compiler->cpp_spec
4802 ? input_file_compiler->cpp_spec
4804 value = do_spec_1 (spec, 0, NULL);
4811 value = do_spec_1 (endfile_spec, 0, NULL);
4817 value = do_spec_1 (link_spec, 0, NULL);
4823 value = do_spec_1 (lib_spec, 0, NULL);
4829 value = do_spec_1 (libgcc_spec, 0, NULL);
4835 if (multilib_dir && strcmp (multilib_dir, ".") != 0)
4841 len = strlen (multilib_dir);
4842 obstack_blank (&obstack, len + 1);
4843 p = obstack_next_free (&obstack) - (len + 1);
4846 for (q = multilib_dir; *q ; ++q, ++p)
4847 *p = (IS_DIR_SEPARATOR (*q) ? '_' : *q);
4853 char *x = (char *) alloca (strlen (cpp_predefines) + 1);
4857 /* Copy all of the -D options in CPP_PREDEFINES into BUF. */
4861 if (! strncmp (y, "-D", 2))
4862 /* Copy the whole option. */
4863 while (*y && *y != ' ' && *y != '\t')
4865 else if (*y == ' ' || *y == '\t')
4866 /* Copy whitespace to the result. */
4868 /* Don't copy other options. */
4875 value = do_spec_1 (buf, 0, NULL);
4883 char *x = (char *) alloca (strlen (cpp_predefines) * 4 + 1);
4887 /* Copy all of CPP_PREDEFINES into BUF,
4888 but force them all into the reserved name space if they
4889 aren't already there. The reserved name space is all
4890 identifiers beginning with two underscores or with one
4891 underscore and a capital letter. We do the forcing by
4892 adding up to two underscores to the beginning and end
4893 of each symbol. e.g. mips, _mips, mips_, and _mips_ all
4898 if (! strncmp (y, "-D", 2))
4907 && ! ISUPPER ((unsigned char) *(y + 1))))
4909 /* Stick __ at front of macro name. */
4913 /* Arrange to stick __ at the end as well. */
4917 /* Copy the macro name. */
4918 while (*y && *y != '=' && *y != ' ' && *y != '\t')
4931 /* Copy the value given, if any. */
4932 while (*y && *y != ' ' && *y != '\t')
4935 else if (*y == ' ' || *y == '\t')
4936 /* Copy whitespace to the result. */
4938 /* Don't copy -A options */
4944 /* Copy all of CPP_PREDEFINES into BUF,
4945 but put __ after every -D. */
4949 if (! strncmp (y, "-D", 2))
4955 && ! ISUPPER ((unsigned char) *(y + 1))))
4957 /* Stick -D__ at front of macro name. */
4964 /* Copy the macro name. */
4965 while (*y && *y != '=' && *y != ' ' && *y != '\t')
4968 /* Copy the value given, if any. */
4969 while (*y && *y != ' ' && *y != '\t')
4974 /* Do not copy this macro - we have just done it before */
4975 while (*y && *y != ' ' && *y != '\t')
4979 else if (*y == ' ' || *y == '\t')
4980 /* Copy whitespace to the result. */
4982 /* Don't copy -A options. */
4988 /* Copy all of the -A options in CPP_PREDEFINES into BUF. */
4992 if (! strncmp (y, "-A", 2))
4993 /* Copy the whole option. */
4994 while (*y && *y != ' ' && *y != '\t')
4996 else if (*y == ' ' || *y == '\t')
4997 /* Copy whitespace to the result. */
4999 /* Don't copy other options. */
5006 value = do_spec_1 (buf, 0, NULL);
5013 value = do_spec_1 (startfile_spec, 0, NULL);
5018 /* Here we define characters other than letters and digits. */
5021 p = handle_braces (p);
5027 obstack_1grow (&obstack, '%');
5034 while (p[len] && p[len] != ' ' && p[len] != '%')
5036 suffix_subst = save_string (p - 1, len + 1);
5042 if (soft_matched_part)
5044 do_spec_1 (soft_matched_part, 1, NULL);
5045 do_spec_1 (" ", 0, NULL);
5048 /* Catch the case where a spec string contains something like
5049 '%{foo:%*}'. ie there is no * in the pattern on the left
5050 hand side of the :. */
5051 error ("spec failure: '%%*' has not been initialized by pattern match");
5054 /* Process a string found as the value of a spec given by name.
5055 This feature allows individual machine descriptions
5056 to add and use their own specs.
5057 %[...] modifies -D options the way %P does;
5058 %(...) uses the spec unmodified. */
5060 error ("warning: use of obsolete %%[ operator in specs");
5063 const char *name = p;
5064 struct spec_list *sl;
5067 /* The string after the S/P is the name of a spec that is to be
5069 while (*p && *p != ')' && *p != ']')
5072 /* See if it's in the list. */
5073 for (len = p - name, sl = specs; sl; sl = sl->next)
5074 if (sl->name_len == len && !strncmp (sl->name, name, len))
5076 name = *(sl->ptr_spec);
5078 notice ("Processing spec %c%s%c, which is '%s'\n",
5079 c, sl->name, (c == '(') ? ')' : ']', name);
5088 value = do_spec_1 (name, 0, NULL);
5094 char *x = (char *) alloca (strlen (name) * 2 + 1);
5096 const char *y = name;
5099 /* Copy all of NAME into BUF, but put __ after
5100 every -D and at the end of each arg. */
5103 if (! strncmp (y, "-D", 2))
5114 && (*y == ' ' || *y == '\t' || *y == '='
5115 || *y == '}' || *y == 0))
5128 value = do_spec_1 (buf, 0, NULL);
5134 /* Discard the closing paren or bracket. */
5142 int c1 = *p++; /* Select first or second version number. */
5143 const char *v = compiler_version;
5145 static const char zeroc = '0';
5147 /* The format of the version string is
5148 ([^0-9]*-)?[0-9]+[.][0-9]+([.][0-9]+)?([- ].*)? */
5150 /* Ignore leading non-digits. i.e. "foo-" in "foo-2.7.2". */
5151 while (! ISDIGIT (*v))
5153 if (v > compiler_version && v[-1] != '-')
5156 /* If desired, advance to second version number. */
5159 /* Set V after the first period. */
5160 while (ISDIGIT (*v))
5167 /* If desired, advance to third version number.
5168 But don't complain if it's not present */
5171 /* Set V after the second period. */
5172 while (ISDIGIT (*v))
5174 if ((*v != 0) && (*v != ' ') && (*v != '.') && (*v != '-'))
5180 /* Set Q at the next period or at the end. */
5182 while (ISDIGIT (*q))
5184 if (*q != 0 && q > v && *q != ' ' && *q != '.' && *q != '-')
5188 /* Put that part into the command. */
5189 obstack_grow (&obstack, v, q - v);
5191 /* Default to "0" */
5192 obstack_grow (&obstack, &zeroc, 1);
5198 if (input_from_pipe)
5199 do_spec_1 ("-", 0, NULL);
5203 error ("spec failure: unrecognized spec option '%c'", c);
5209 /* Backslash: treat next character as ordinary. */
5214 /* Ordinary character: put it into the current argument. */
5215 obstack_1grow (&obstack, c);
5219 /* End of string. */
5223 /* Return 0 if we call do_spec_1 and that returns -1. */
5229 const char *filter, *body = NULL, *endbody = NULL;
5231 int true_once = 0; /* If, in %{a|b:d}, at least one of a,b was seen. */
5234 int include_blanks = 1;
5235 int elide_switch = 0;
5240 /* A '^' after the open-brace means to not give blanks before args. */
5247 /* A `|' after the open-brace means,
5248 if the test fails, output a single minus sign rather than nothing.
5249 This is used in %{|!pipe:...}. */
5256 /* A `<' after the open-brace means that the switch should be
5257 removed from the command-line. */
5263 negate = suffix = 0;
5266 /* A `!' after the open-brace negates the condition:
5267 succeed if the specified switch is not present. */
5271 /* A `.' after the open-brace means test against the current suffix. */
5280 if (elide_switch && (negate || pipe_p || suffix))
5282 /* It doesn't make sense to mix elision with other flags. We
5283 could fatal() here, but the standard seems to be to abort. */
5289 while (*p != ':' && *p != '}' && *p != '|' && *p != '&')
5292 if (*p == '|' && (pipe_p || ordered))
5297 if (*p != '}' && *p != '&')
5313 fatal ("mismatched braces in specs");
5319 body = p, endbody = p + 1;
5324 int found = (input_suffix != 0
5325 && (long) strlen (input_suffix) == (long) (p - filter)
5326 && strncmp (input_suffix, filter, p - filter) == 0);
5332 && do_spec_1 (save_string (body, endbody-body-1), 0, NULL) < 0)
5335 else if (p[-1] == '*' && (p[0] == '}' || p[0] == '&'))
5337 /* Substitute all matching switches as separate args. */
5340 for (i = 0; i < n_switches; i++)
5341 if (!strncmp (switches[i].part1, filter, p - 1 - filter)
5342 && check_live_switch (i, p - 1 - filter))
5346 switches[i].live_cond = SWITCH_IGNORE;
5347 switches[i].validated = 1;
5350 ordered = 1, switches[i].ordering = 1;
5355 /* Test for presence of the specified switch. */
5359 /* If name specified ends in *, as in {x*:...},
5360 check for %* and handle that case. */
5361 if (p[-1] == '*' && !negate)
5364 const char *r = body;
5366 /* First see whether we have %*. */
5370 if (*r == '%' && r[1] == '*')
5374 /* If we do, handle that case. */
5377 /* Substitute all matching switches as separate args.
5378 But do this by substituting for %*
5379 in the text that follows the colon. */
5381 unsigned hard_match_len = p - filter - 1;
5382 char *string = save_string (body, endbody - body - 1);
5384 for (i = 0; i < n_switches; i++)
5385 if (!strncmp (switches[i].part1, filter, hard_match_len)
5386 && check_live_switch (i, -1))
5388 do_spec_1 (string, 0, &switches[i].part1[hard_match_len]);
5389 /* Pass any arguments this switch has. */
5390 give_switch (i, 1, 1);
5391 suffix_subst = NULL;
5394 /* We didn't match. Try again. */
5401 /* If name specified ends in *, as in {x*:...},
5402 check for presence of any switch name starting with x. */
5405 for (i = 0; i < n_switches; i++)
5407 unsigned hard_match_len = p - filter - 1;
5409 if (!strncmp (switches[i].part1, filter, hard_match_len)
5410 && check_live_switch (i, hard_match_len))
5417 /* Otherwise, check for presence of exact name specified. */
5420 for (i = 0; i < n_switches; i++)
5422 if (!strncmp (switches[i].part1, filter, p - filter)
5423 && switches[i].part1[p - filter] == 0
5424 && check_live_switch (i, -1))
5432 /* If it is as desired (present for %{s...}, absent for %{!s...})
5433 then substitute either the switch or the specified
5434 conditional text. */
5435 if (present != negate)
5439 switches[i].live_cond = SWITCH_IGNORE;
5440 switches[i].validated = 1;
5442 else if (ordered || *p == '&')
5443 ordered = 1, switches[i].ordering = 1;
5445 give_switch (i, 0, include_blanks);
5447 /* Even if many alternatives are matched, only output once. */
5452 /* Here if a %{|...} conditional fails: output a minus sign,
5453 which means "standard output" or "standard input". */
5454 do_spec_1 ("-", 0, NULL);
5459 /* We didn't match; try again. */
5466 goto next_ampersand;
5472 /* Doing this set of switches later preserves their command-line
5473 ordering. This is needed for e.g. -U, -D and -A. */
5474 for (i = 0; i < n_switches; i++)
5475 if (switches[i].ordering == 1)
5477 switches[i].ordering = 0;
5478 give_switch (i, 0, include_blanks);
5481 /* Process the spec just once, regardless of match count. */
5484 if (do_spec_1 (save_string (body, endbody - body - 1),
5492 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5493 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5494 spec, or -1 if either exact match or %* is used.
5496 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5497 whose value does not begin with "no-" is obsoleted by the same value
5498 with the "no-", similarly for a switch with the "no-" prefix. */
5501 check_live_switch (switchnum, prefix_length)
5505 const char *name = switches[switchnum].part1;
5508 /* In the common case of {<at-most-one-letter>*}, a negating
5509 switch would always match, so ignore that case. We will just
5510 send the conflicting switches to the compiler phase. */
5511 if (prefix_length >= 0 && prefix_length <= 1)
5514 /* If we already processed this switch and determined if it was
5515 live or not, return our past determination. */
5516 if (switches[switchnum].live_cond != 0)
5517 return switches[switchnum].live_cond > 0;
5519 /* Now search for duplicate in a manner that depends on the name. */
5523 for (i = switchnum + 1; i < n_switches; i++)
5524 if (switches[i].part1[0] == 'O')
5526 switches[switchnum].validated = 1;
5527 switches[switchnum].live_cond = SWITCH_FALSE;
5532 case 'W': case 'f': case 'm':
5533 if (! strncmp (name + 1, "no-", 3))
5535 /* We have Xno-YYY, search for XYYY. */
5536 for (i = switchnum + 1; i < n_switches; i++)
5537 if (switches[i].part1[0] == name[0]
5538 && ! strcmp (&switches[i].part1[1], &name[4]))
5540 switches[switchnum].validated = 1;
5541 switches[switchnum].live_cond = SWITCH_FALSE;
5547 /* We have XYYY, search for Xno-YYY. */
5548 for (i = switchnum + 1; i < n_switches; i++)
5549 if (switches[i].part1[0] == name[0]
5550 && switches[i].part1[1] == 'n'
5551 && switches[i].part1[2] == 'o'
5552 && switches[i].part1[3] == '-'
5553 && !strcmp (&switches[i].part1[4], &name[1]))
5555 switches[switchnum].validated = 1;
5556 switches[switchnum].live_cond = SWITCH_FALSE;
5563 /* Otherwise the switch is live. */
5564 switches[switchnum].live_cond = SWITCH_LIVE;
5568 /* Pass a switch to the current accumulating command
5569 in the same form that we received it.
5570 SWITCHNUM identifies the switch; it is an index into
5571 the vector of switches gcc received, which is `switches'.
5572 This cannot fail since it never finishes a command line.
5574 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument.
5576 If INCLUDE_BLANKS is nonzero, then we include blanks before each argument
5580 give_switch (switchnum, omit_first_word, include_blanks)
5582 int omit_first_word;
5585 if (switches[switchnum].live_cond == SWITCH_IGNORE)
5588 if (!omit_first_word)
5590 do_spec_1 ("-", 0, NULL);
5591 do_spec_1 (switches[switchnum].part1, 1, NULL);
5594 if (switches[switchnum].args != 0)
5597 for (p = switches[switchnum].args; *p; p++)
5599 const char *arg = *p;
5602 do_spec_1 (" ", 0, NULL);
5605 unsigned length = strlen (arg);
5608 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5609 if (arg[length] == '.')
5611 ((char *)arg)[length] = 0;
5615 do_spec_1 (arg, 1, NULL);
5617 ((char *)arg)[length] = '.';
5618 do_spec_1 (suffix_subst, 1, NULL);
5621 do_spec_1 (arg, 1, NULL);
5625 do_spec_1 (" ", 0, NULL);
5626 switches[switchnum].validated = 1;
5629 /* Search for a file named NAME trying various prefixes including the
5630 user's -B prefix and some standard ones.
5631 Return the absolute file name found. If nothing is found, return NAME. */
5639 /* Try multilib_dir if it is defined. */
5640 if (multilib_dir != NULL)
5642 const char *const try = ACONCAT ((multilib_dir, dir_separator_str, name, NULL));
5644 newname = find_a_file (&startfile_prefixes, try, R_OK);
5646 /* If we don't find it in the multi library dir, then fall
5647 through and look for it in the normal places. */
5648 if (newname != NULL)
5652 newname = find_a_file (&startfile_prefixes, name, R_OK);
5653 return newname ? newname : name;
5656 /* Determine whether a directory exists. If LINKER, return 0 for
5657 certain fixed names not needed by the linker. If not LINKER, it is
5658 only important to return 0 if the host machine has a small ARG_MAX
5662 is_directory (path1, path2, linker)
5667 int len1 = strlen (path1);
5668 int len2 = strlen (path2);
5669 char *path = (char *) alloca (3 + len1 + len2);
5673 #ifndef SMALL_ARG_MAX
5678 /* Construct the path from the two parts. Ensure the string ends with "/.".
5679 The resulting path will be a directory even if the given path is a
5681 memcpy (path, path1, len1);
5682 memcpy (path + len1, path2, len2);
5683 cp = path + len1 + len2;
5684 if (!IS_DIR_SEPARATOR (cp[-1]))
5685 *cp++ = DIR_SEPARATOR;
5689 /* Exclude directories that the linker is known to search. */
5692 && strcmp (path, concat (dir_separator_str, "lib",
5693 dir_separator_str, ".", NULL)) == 0)
5695 && strcmp (path, concat (dir_separator_str, "usr",
5696 dir_separator_str, "lib",
5697 dir_separator_str, ".", NULL)) == 0)))
5700 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5703 /* Set up the various global variables to indicate that we're processing
5704 the input file named FILENAME. */
5707 set_input (filename)
5708 const char *filename;
5712 input_filename = filename;
5713 input_filename_length = strlen (input_filename);
5715 input_basename = input_filename;
5716 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
5717 /* Skip drive name so 'x:foo' is handled properly. */
5718 if (input_basename[1] == ':')
5719 input_basename += 2;
5721 for (p = input_basename; *p; p++)
5722 if (IS_DIR_SEPARATOR (*p))
5723 input_basename = p + 1;
5725 /* Find a suffix starting with the last period,
5726 and set basename_length to exclude that suffix. */
5727 basename_length = strlen (input_basename);
5728 suffixed_basename_length = basename_length;
5729 p = input_basename + basename_length;
5730 while (p != input_basename && *p != '.')
5732 if (*p == '.' && p != input_basename)
5734 basename_length = p - input_basename;
5735 input_suffix = p + 1;
5740 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5741 we will need to do a stat on the input_filename. The
5742 INPUT_STAT_SET signals that the stat is needed. */
5746 /* On fatal signals, delete all the temporary files. */
5749 fatal_error (signum)
5752 signal (signum, SIG_DFL);
5753 delete_failure_queue ();
5754 delete_temp_files ();
5755 /* Get the same signal again, this time not handled,
5756 so its normal effect occurs. */
5757 kill (getpid (), signum);
5760 extern int main PARAMS ((int, const char *const *));
5765 const char *const *argv;
5769 int linker_was_run = 0;
5770 char *explicit_link_files;
5773 struct user_specs *uptr;
5775 p = argv[0] + strlen (argv[0]);
5776 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
5780 xmalloc_set_program_name (programname);
5782 #ifdef GCC_DRIVER_HOST_INITIALIZATION
5783 /* Perform host dependent initialization when needed. */
5784 GCC_DRIVER_HOST_INITIALIZATION;
5787 gcc_init_libintl ();
5789 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
5790 signal (SIGINT, fatal_error);
5792 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
5793 signal (SIGHUP, fatal_error);
5795 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
5796 signal (SIGTERM, fatal_error);
5798 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
5799 signal (SIGPIPE, fatal_error);
5802 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
5803 receive the signal. A different setting is inheritable */
5804 signal (SIGCHLD, SIG_DFL);
5808 argbuf = (const char **) xmalloc (argbuf_length * sizeof (const char *));
5810 obstack_init (&obstack);
5812 /* Build multilib_select, et. al from the separate lines that make up each
5813 multilib selection. */
5815 const char *const *q = multilib_raw;
5818 obstack_init (&multilib_obstack);
5819 while ((p = *q++) != (char *) 0)
5820 obstack_grow (&multilib_obstack, p, strlen (p));
5822 obstack_1grow (&multilib_obstack, 0);
5823 multilib_select = obstack_finish (&multilib_obstack);
5825 q = multilib_matches_raw;
5826 while ((p = *q++) != (char *) 0)
5827 obstack_grow (&multilib_obstack, p, strlen (p));
5829 obstack_1grow (&multilib_obstack, 0);
5830 multilib_matches = obstack_finish (&multilib_obstack);
5832 q = multilib_exclusions_raw;
5833 while ((p = *q++) != (char *) 0)
5834 obstack_grow (&multilib_obstack, p, strlen (p));
5836 obstack_1grow (&multilib_obstack, 0);
5837 multilib_exclusions = obstack_finish (&multilib_obstack);
5840 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
5843 obstack_1grow (&multilib_obstack, ' ');
5844 obstack_grow (&multilib_obstack,
5845 multilib_defaults_raw[i],
5846 strlen (multilib_defaults_raw[i]));
5850 obstack_1grow (&multilib_obstack, 0);
5851 multilib_defaults = obstack_finish (&multilib_obstack);
5854 /* Set up to remember the pathname of gcc and any options
5855 needed for collect. We use argv[0] instead of programname because
5856 we need the complete pathname. */
5857 obstack_init (&collect_obstack);
5858 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
5859 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
5860 putenv (obstack_finish (&collect_obstack));
5862 #ifdef INIT_ENVIRONMENT
5863 /* Set up any other necessary machine specific environment variables. */
5864 putenv (INIT_ENVIRONMENT);
5867 /* Make a table of what switches there are (switches, n_switches).
5868 Make a table of specified input files (infiles, n_infiles).
5869 Decode switches that are handled locally. */
5871 process_command (argc, argv);
5873 /* Initialize the vector of specs to just the default.
5874 This means one element containing 0s, as a terminator. */
5876 compilers = (struct compiler *) xmalloc (sizeof default_compilers);
5877 memcpy ((char *) compilers, (char *) default_compilers,
5878 sizeof default_compilers);
5879 n_compilers = n_default_compilers;
5881 /* Read specs from a file if there is one. */
5883 machine_suffix = concat (spec_machine, dir_separator_str,
5884 spec_version, dir_separator_str, NULL);
5885 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
5887 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK);
5888 /* Read the specs file unless it is a default one. */
5889 if (specs_file != 0 && strcmp (specs_file, "specs"))
5890 read_specs (specs_file, TRUE);
5894 /* We need to check standard_exec_prefix/just_machine_suffix/specs
5895 for any override of as, ld and libraries. */
5896 specs_file = (char *) alloca (strlen (standard_exec_prefix)
5897 + strlen (just_machine_suffix)
5898 + sizeof ("specs"));
5900 strcpy (specs_file, standard_exec_prefix);
5901 strcat (specs_file, just_machine_suffix);
5902 strcat (specs_file, "specs");
5903 if (access (specs_file, R_OK) == 0)
5904 read_specs (specs_file, TRUE);
5906 /* If not cross-compiling, look for startfiles in the standard places.
5907 Similarly, don't add the standard prefixes if startfile handling
5908 will be under control of startfile_prefix_spec. */
5909 if (*cross_compile == '0' && *startfile_prefix_spec == 0)
5911 if (*md_exec_prefix)
5913 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
5914 PREFIX_PRIORITY_LAST, 0, NULL);
5915 add_prefix (&startfile_prefixes, md_exec_prefix, "GCC",
5916 PREFIX_PRIORITY_LAST, 0, NULL);
5919 if (*md_startfile_prefix)
5920 add_prefix (&startfile_prefixes, md_startfile_prefix, "GCC",
5921 PREFIX_PRIORITY_LAST, 0, NULL);
5923 if (*md_startfile_prefix_1)
5924 add_prefix (&startfile_prefixes, md_startfile_prefix_1, "GCC",
5925 PREFIX_PRIORITY_LAST, 0, NULL);
5927 /* If standard_startfile_prefix is relative, base it on
5928 standard_exec_prefix. This lets us move the installed tree
5929 as a unit. If GCC_EXEC_PREFIX is defined, base
5930 standard_startfile_prefix on that as well. */
5931 if (IS_ABSOLUTE_PATHNAME (standard_startfile_prefix))
5932 add_prefix (&startfile_prefixes, standard_startfile_prefix, "BINUTILS",
5933 PREFIX_PRIORITY_LAST, 0, NULL);
5936 if (gcc_exec_prefix)
5937 add_prefix (&startfile_prefixes,
5938 concat (gcc_exec_prefix, machine_suffix,
5939 standard_startfile_prefix, NULL),
5940 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
5941 add_prefix (&startfile_prefixes,
5942 concat (standard_exec_prefix,
5944 standard_startfile_prefix, NULL),
5945 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
5948 add_prefix (&startfile_prefixes, standard_startfile_prefix_1,
5949 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
5950 add_prefix (&startfile_prefixes, standard_startfile_prefix_2,
5951 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
5952 #if 0 /* Can cause surprises, and one can use -B./ instead. */
5953 add_prefix (&startfile_prefixes, "./", NULL,
5954 PREFIX_PRIORITY_LAST, 1, NULL);
5959 if (!IS_ABSOLUTE_PATHNAME (standard_startfile_prefix)
5961 add_prefix (&startfile_prefixes,
5962 concat (gcc_exec_prefix, machine_suffix,
5963 standard_startfile_prefix, NULL),
5964 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
5967 if (*startfile_prefix_spec != 0
5968 && do_spec_2 (startfile_prefix_spec) == 0
5969 && do_spec_1 (" ", 0, NULL) == 0)
5972 for (ndx = 0; ndx < argbuf_index; ndx++)
5973 add_prefix (&startfile_prefixes, argbuf[ndx], "BINUTILS",
5974 PREFIX_PRIORITY_LAST, 0, NULL);
5977 /* Process any user specified specs in the order given on the command
5979 for (uptr = user_specs_head; uptr; uptr = uptr->next)
5981 char *filename = find_a_file (&startfile_prefixes, uptr->filename, R_OK);
5982 read_specs (filename ? filename : uptr->filename, FALSE);
5985 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
5986 if (gcc_exec_prefix)
5987 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
5988 spec_version, dir_separator_str, NULL);
5990 /* Now we have the specs.
5991 Set the `valid' bits for switches that match anything in any spec. */
5993 validate_all_switches ();
5995 /* Now that we have the switches and the specs, set
5996 the subdirectory based on the options. */
5997 set_multilib_dir ();
5999 /* Warn about any switches that no pass was interested in. */
6001 for (i = 0; (int) i < n_switches; i++)
6002 if (! switches[i].validated)
6003 error ("unrecognized option `-%s'", switches[i].part1);
6005 /* Obey some of the options. */
6007 if (print_search_dirs)
6009 printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix);
6010 printf (_("programs: %s\n"), build_search_list (&exec_prefixes, "", 0));
6011 printf (_("libraries: %s\n"), build_search_list (&startfile_prefixes, "", 0));
6015 if (print_file_name)
6017 printf ("%s\n", find_file (print_file_name));
6021 if (print_prog_name)
6023 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK);
6024 printf ("%s\n", (newname ? newname : print_prog_name));
6028 if (print_multi_lib)
6030 print_multilib_info ();
6034 if (print_multi_directory)
6036 if (multilib_dir == NULL)
6039 printf ("%s\n", multilib_dir);
6043 if (target_help_flag)
6045 /* Print if any target specific options. */
6047 /* We do not exit here. Instead we have created a fake input file
6048 called 'target-dummy' which needs to be compiled, and we pass this
6049 on to the various sub-processes, along with the --target-help
6053 if (print_help_list)
6059 printf (_("\nFor bug reporting instructions, please see:\n"));
6060 printf ("%s.\n", GCCBUGURL);
6065 /* We do not exit here. Instead we have created a fake input file
6066 called 'help-dummy' which needs to be compiled, and we pass this
6067 on the various sub-processes, along with the --help switch. */
6075 notice ("Configured with: %s\n", configuration_arguments);
6077 #ifdef THREAD_MODEL_SPEC
6078 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6079 but there's no point in doing all this processing just to get
6080 thread_model back. */
6081 obstack_init (&obstack);
6082 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6083 obstack_1grow (&obstack, '\0');
6084 thrmod = obstack_finish (&obstack);
6086 thrmod = thread_model;
6089 notice ("Thread model: %s\n", thrmod);
6091 /* compiler_version is truncated at the first space when initialized
6092 from version string, so truncate version_string at the first space
6093 before comparing. */
6094 for (n = 0; version_string[n]; n++)
6095 if (version_string[n] == ' ')
6098 if (! strncmp (version_string, compiler_version, n)
6099 && compiler_version[n] == 0)
6100 notice ("gcc version %s\n", version_string);
6102 notice ("gcc driver version %s executing gcc version %s\n",
6103 version_string, compiler_version);
6109 if (n_infiles == added_libraries)
6110 fatal ("no input files");
6112 /* Make a place to record the compiler output file names
6113 that correspond to the input files. */
6116 i += lang_specific_extra_outfiles;
6117 outfiles = (const char **) xcalloc (i, sizeof (char *));
6119 /* Record which files were specified explicitly as link input. */
6121 explicit_link_files = xcalloc (1, n_infiles);
6123 for (i = 0; (int) i < n_infiles; i++)
6125 int this_file_error = 0;
6127 /* Tell do_spec what to substitute for %i. */
6129 input_file_number = i;
6130 set_input (infiles[i].name);
6132 /* Use the same thing in %o, unless cp->spec says otherwise. */
6134 outfiles[i] = input_filename;
6136 /* Figure out which compiler from the file's suffix. */
6139 = lookup_compiler (infiles[i].name, input_filename_length,
6140 infiles[i].language);
6142 if (input_file_compiler)
6144 /* Ok, we found an applicable compiler. Run its spec. */
6146 if (input_file_compiler->spec[0] == '#')
6148 error ("%s: %s compiler not installed on this system",
6149 input_filename, &input_file_compiler->spec[1]);
6150 this_file_error = 1;
6154 value = do_spec (input_file_compiler->spec);
6156 this_file_error = 1;
6160 /* If this file's name does not contain a recognized suffix,
6161 record it as explicit linker input. */
6164 explicit_link_files[i] = 1;
6166 /* Clear the delete-on-failure queue, deleting the files in it
6167 if this compilation failed. */
6169 if (this_file_error)
6171 delete_failure_queue ();
6174 /* If this compilation succeeded, don't delete those files later. */
6175 clear_failure_queue ();
6178 /* Reset the output file name to the first input file name, for use
6179 with %b in LINK_SPEC on a target that prefers not to emit a.out
6182 set_input (infiles[0].name);
6184 if (error_count == 0)
6186 /* Make sure INPUT_FILE_NUMBER points to first available open
6188 input_file_number = n_infiles;
6189 if (lang_specific_pre_link ())
6193 /* Run ld to link all the compiler output files. */
6195 if (error_count == 0)
6197 int tmp = execution_count;
6199 /* We'll use ld if we can't find collect2. */
6200 if (! strcmp (linker_name_spec, "collect2"))
6202 char *s = find_a_file (&exec_prefixes, "collect2", X_OK);
6204 linker_name_spec = "ld";
6206 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6208 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH");
6209 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV);
6211 value = do_spec (link_command_spec);
6214 linker_was_run = (tmp != execution_count);
6217 /* If options said don't run linker,
6218 complain about input files to be given to the linker. */
6220 if (! linker_was_run && error_count == 0)
6221 for (i = 0; (int) i < n_infiles; i++)
6222 if (explicit_link_files[i])
6223 error ("%s: linker input file unused because linking not done",
6226 /* Delete some or all of the temporary files we made. */
6229 delete_failure_queue ();
6230 delete_temp_files ();
6232 if (print_help_list)
6234 printf (("\nFor bug reporting instructions, please see:\n"));
6235 printf ("%s\n", GCCBUGURL);
6238 return (signal_count != 0 ? 2
6239 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
6243 /* Find the proper compilation spec for the file name NAME,
6244 whose length is LENGTH. LANGUAGE is the specified language,
6245 or 0 if this file is to be passed to the linker. */
6247 static struct compiler *
6248 lookup_compiler (name, length, language)
6251 const char *language;
6253 struct compiler *cp;
6255 /* If this was specified by the user to be a linker input, indicate that. */
6256 if (language != 0 && language[0] == '*')
6259 /* Otherwise, look for the language, if one is spec'd. */
6262 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6263 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6266 error ("language %s not recognized", language);
6270 /* Look for a suffix. */
6271 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6273 if (/* The suffix `-' matches only the file name `-'. */
6274 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6275 || (strlen (cp->suffix) < length
6276 /* See if the suffix matches the end of NAME. */
6277 && !strcmp (cp->suffix,
6278 name + length - strlen (cp->suffix))
6283 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6284 /* look again, but case-insensitively this time. */
6286 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6288 if (/* The suffix `-' matches only the file name `-'. */
6289 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6290 || (strlen (cp->suffix) < length
6291 /* See if the suffix matches the end of NAME. */
6292 && ((!strcmp (cp->suffix,
6293 name + length - strlen (cp->suffix))
6294 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6295 && !strcasecmp (cp->suffix,
6296 name + length - strlen (cp->suffix)))
6302 if (cp >= compilers)
6304 if (cp->spec[0] != '@')
6305 /* A non-alias entry: return it. */
6308 /* An alias entry maps a suffix to a language.
6309 Search for the language; pass 0 for NAME and LENGTH
6310 to avoid infinite recursion if language not found. */
6311 return lookup_compiler (NULL, 0, cp->spec + 1);
6317 save_string (s, len)
6321 char *result = xmalloc (len + 1);
6323 memcpy (result, s, len);
6329 pfatal_with_name (name)
6332 perror_with_name (name);
6333 delete_temp_files ();
6338 perror_with_name (name)
6341 error ("%s: %s", name, xstrerror (errno));
6345 pfatal_pexecute (errmsg_fmt, errmsg_arg)
6346 const char *errmsg_fmt;
6347 const char *errmsg_arg;
6351 int save_errno = errno;
6353 /* Space for trailing '\0' is in %s. */
6354 char *msg = xmalloc (strlen (errmsg_fmt) + strlen (errmsg_arg));
6355 sprintf (msg, errmsg_fmt, errmsg_arg);
6361 pfatal_with_name (errmsg_fmt);
6364 /* Output an error message and exit */
6369 fatal ("internal gcc abort");
6372 /* Output an error message and exit */
6375 fatal VPARAMS ((const char *msgid, ...))
6377 VA_OPEN (ap, msgid);
6378 VA_FIXEDARG (ap, const char *, msgid);
6380 fprintf (stderr, "%s: ", programname);
6381 vfprintf (stderr, _(msgid), ap);
6383 fprintf (stderr, "\n");
6384 delete_temp_files ();
6389 error VPARAMS ((const char *msgid, ...))
6391 VA_OPEN (ap, msgid);
6392 VA_FIXEDARG (ap, const char *, msgid);
6394 fprintf (stderr, "%s: ", programname);
6395 vfprintf (stderr, _(msgid), ap);
6398 fprintf (stderr, "\n");
6402 notice VPARAMS ((const char *msgid, ...))
6404 VA_OPEN (ap, msgid);
6405 VA_FIXEDARG (ap, const char *, msgid);
6407 vfprintf (stderr, _(msgid), ap);
6412 validate_all_switches ()
6414 struct compiler *comp;
6417 struct spec_list *spec;
6419 for (comp = compilers; comp->spec; comp++)
6423 if (c == '%' && (*p == '{' || (*p == 'W' && *++p == '{')))
6424 /* We have a switch spec. */
6425 validate_switches (p + 1);
6428 /* Look through the linked list of specs read from the specs file. */
6429 for (spec = specs; spec; spec = spec->next)
6431 p = *(spec->ptr_spec);
6433 if (c == '%' && (*p == '{' || (*p == 'W' && *++p == '{')))
6434 /* We have a switch spec. */
6435 validate_switches (p + 1);
6438 p = link_command_spec;
6440 if (c == '%' && (*p == '{' || (*p == 'W' && *++p == '{')))
6441 /* We have a switch spec. */
6442 validate_switches (p + 1);
6445 /* Look at the switch-name that comes after START
6446 and mark as valid all supplied switches that match it. */
6449 validate_switches (start)
6452 const char *p = start;
6469 while (*p != ':' && *p != '}' && *p != '|' && *p != '&')
6474 else if (p[-1] == '*')
6476 /* Mark all matching switches as valid. */
6477 for (i = 0; i < n_switches; i++)
6478 if (!strncmp (switches[i].part1, filter, p - filter - 1))
6479 switches[i].validated = 1;
6483 /* Mark an exact matching switch as valid. */
6484 for (i = 0; i < n_switches; i++)
6486 if (!strncmp (switches[i].part1, filter, p - filter)
6487 && switches[i].part1[p - filter] == 0)
6488 switches[i].validated = 1;
6492 if (*p++ == '|' || p[-1] == '&')
6496 /* Check whether a particular argument was used. The first time we
6497 canonicalize the switches to keep only the ones we care about. */
6507 const char *replace;
6512 static struct mswitchstr *mswitches;
6513 static int n_mswitches;
6518 struct mswitchstr *matches;
6522 /* Break multilib_matches into the component strings of string
6523 and replacement string. */
6524 for (q = multilib_matches; *q != '\0'; q++)
6529 (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
6531 q = multilib_matches;
6541 matches[i].len = q - matches[i].str;
6543 matches[i].replace = ++q;
6544 while (*q != ';' && *q != '\0')
6550 matches[i].rep_len = q - matches[i].replace;
6556 /* Now build a list of the replacement string for switches that we care
6557 about. Make sure we allocate at least one entry. This prevents
6558 xmalloc from calling fatal, and prevents us from re-executing this
6561 = (struct mswitchstr *) xmalloc ((sizeof (struct mswitchstr))
6562 * (n_switches ? n_switches : 1));
6563 for (i = 0; i < n_switches; i++)
6565 int xlen = strlen (switches[i].part1);
6566 for (j = 0; j < cnt; j++)
6567 if (xlen == matches[j].len
6568 && ! strncmp (switches[i].part1, matches[j].str, xlen))
6570 mswitches[n_mswitches].str = matches[j].replace;
6571 mswitches[n_mswitches].len = matches[j].rep_len;
6572 mswitches[n_mswitches].replace = (char *) 0;
6573 mswitches[n_mswitches].rep_len = 0;
6580 for (i = 0; i < n_mswitches; i++)
6581 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
6588 default_arg (p, len)
6592 const char *start, *end;
6594 for (start = multilib_defaults; *start != '\0'; start = end + 1)
6596 while (*start == ' ' || *start == '\t')
6602 for (end = start + 1; *end != ' ' && *end != '\t' && *end != '\0'; end++)
6605 if ((end - start) == len && strncmp (p, start, len) == 0)
6615 /* Work out the subdirectory to use based on the options. The format of
6616 multilib_select is a list of elements. Each element is a subdirectory
6617 name followed by a list of options followed by a semicolon. The format
6618 of multilib_exclusions is the same, but without the preceding
6619 directory. First gcc will check the exclusions, if none of the options
6620 beginning with an exclamation point are present, and all of the other
6621 options are present, then we will ignore this completely. Passing
6622 that, gcc will consider each multilib_select in turn using the same
6623 rules for matching the options. If a match is found, that subdirectory
6630 unsigned int this_path_len;
6631 const char *this_path, *this_arg;
6635 p = multilib_exclusions;
6638 /* Ignore newlines. */
6645 /* Check the arguments. */
6659 while (*p != ' ' && *p != ';')
6666 if (*this_arg != '!')
6674 ok = used_arg (this_arg, p - this_arg);
6688 p = multilib_select;
6691 /* Ignore newlines. */
6698 /* Get the initial path. */
6706 this_path_len = p - this_path;
6708 /* Check the arguments. */
6723 while (*p != ' ' && *p != ';')
6730 if (*this_arg != '!')
6738 /* If this is a default argument, we can just ignore it.
6739 This is true even if this_arg begins with '!'. Beginning
6740 with '!' does not mean that this argument is necessarily
6741 inappropriate for this library: it merely means that
6742 there is a more specific library which uses this
6743 argument. If this argument is a default, we need not
6744 consider that more specific library. */
6745 if (! default_arg (this_arg, p - this_arg))
6747 ok = used_arg (this_arg, p - this_arg);
6758 if (this_path_len != 1
6759 || this_path[0] != '.')
6761 char *new_multilib_dir = xmalloc (this_path_len + 1);
6762 strncpy (new_multilib_dir, this_path, this_path_len);
6763 new_multilib_dir[this_path_len] = '\0';
6764 multilib_dir = new_multilib_dir;
6773 /* Print out the multiple library subdirectory selection
6774 information. This prints out a series of lines. Each line looks
6775 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
6776 required. Only the desired options are printed out, the negative
6777 matches. The options are print without a leading dash. There are
6778 no spaces to make it easy to use the information in the shell.
6779 Each subdirectory is printed only once. This assumes the ordering
6780 generated by the genmultilib script. Also, we leave out ones that match
6784 print_multilib_info ()
6786 const char *p = multilib_select;
6787 const char *last_path = 0, *this_path;
6789 unsigned int last_path_len = 0;
6794 /* Ignore newlines. */
6801 /* Get the initial path. */
6810 /* Check for matches with the multilib_exclusions. We don't bother
6811 with the '!' in either list. If any of the exclusion rules match
6812 all of its options with the select rule, we skip it. */
6814 const char *e = multilib_exclusions;
6815 const char *this_arg;
6820 /* Ignore newlines. */
6827 /* Check the arguments. */
6844 while (*e != ' ' && *e != ';')
6855 int len = e - this_arg;
6862 while (*q != ' ' && *q != ';')
6869 if (! strncmp (arg, this_arg, (len < q - arg) ? q - arg : len) ||
6870 default_arg (this_arg, e - this_arg))
6900 /* If this is a duplicate, skip it. */
6901 skip = (last_path != 0 && (unsigned int) (p - this_path) == last_path_len
6902 && ! strncmp (last_path, this_path, last_path_len));
6904 last_path = this_path;
6905 last_path_len = p - this_path;
6908 /* If this directory requires any default arguments, we can skip
6909 it. We will already have printed a directory identical to
6910 this one which does not require that default argument. */
6928 while (*q != ' ' && *q != ';')
6936 && default_arg (arg, q - arg))
6951 for (p1 = last_path; p1 < p; p1++)
6970 use_arg = *p != '!';
6975 while (*p != ' ' && *p != ';')
6990 /* If there are extra options, print them now. */
6991 if (multilib_extra && *multilib_extra)
6993 int print_at = TRUE;
6996 for (q = multilib_extra; *q != '\0'; q++)