1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
22 This paragraph is here to try to keep Sun CC from dying.
23 The number of chars here seems crucial!!!! */
25 /* This program is the user interface to the C compiler and possibly to
26 other compilers. It is used because compilation is a complicated procedure
27 which involves running several programs and passing temporary files between
28 them, forwarding the users switches to those programs selectively,
29 and deleting the temporary files at the end.
31 CC recognizes how to compile each input file by suffixes in the file names.
32 Once it knows which kind of compilation to perform, the procedure for
33 compilation is specified by a string called a "spec". */
35 /* A Short Introduction to Adding a Command-Line Option.
37 Before adding a command-line option, consider if it is really
38 necessary. Each additional command-line option adds complexity and
39 is difficult to remove in subsequent versions.
41 In the following, consider adding the command-line argument
44 1. Each command-line option is specified in the specs file. The
45 notation is described below in the comment entitled "The Specs
48 2. In this file, add an entry to "option_map" equating the long
49 `--' argument version and any shorter, single letter version. Read
50 the comments in the declaration of "struct option_map" for an
51 explanation. Do not omit the first `-'.
53 3. Look in the "specs" file to determine which program or option
54 list should be given the argument, e.g., "cc1_options". Add the
55 appropriate syntax for the shorter option version to the
56 corresponding "const char *" entry in this file. Omit the first
57 `-' from the option. For example, use `-bar', rather than `--bar'.
59 4. If the argument takes an argument, e.g., `--baz argument1',
60 modify either DEFAULT_SWITCH_TAKES_ARG or
61 DEFAULT_WORD_SWITCH_TAKES_ARG in this file. Omit the first `-'
64 5. Document the option in this file's display_help(). If the
65 option is passed to a subprogram, modify its corresponding
66 function, e.g., cppinit.c:print_help() or toplev.c:display_help(),
69 6. Compile and test. Make sure that your new specs file is being
70 read. For example, use a debugger to investigate the value of
71 "specs_file" in main(). */
76 #if ! defined( SIGCHLD ) && defined( SIGCLD )
77 # define SIGCHLD SIGCLD
85 #ifdef HAVE_SYS_RESOURCE_H
86 #include <sys/resource.h>
88 #if defined (HAVE_DECL_GETRUSAGE) && !HAVE_DECL_GETRUSAGE
89 extern int getrusage PARAMS ((int, struct rusage *));
92 /* By default there is no special suffix for target executables. */
93 /* FIXME: when autoconf is fixed, remove the host check - dj */
94 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
95 #define HAVE_TARGET_EXECUTABLE_SUFFIX
97 #undef TARGET_EXECUTABLE_SUFFIX
98 #define TARGET_EXECUTABLE_SUFFIX ""
101 /* By default there is no special suffix for host executables. */
102 #ifdef HOST_EXECUTABLE_SUFFIX
103 #define HAVE_HOST_EXECUTABLE_SUFFIX
105 #define HOST_EXECUTABLE_SUFFIX ""
108 /* By default, the suffix for target object files is ".o". */
109 #ifdef TARGET_OBJECT_SUFFIX
110 #define HAVE_TARGET_OBJECT_SUFFIX
112 #define TARGET_OBJECT_SUFFIX ".o"
116 /* FIXME: the location independence code for VMS is hairier than this,
117 and hasn't been written. */
123 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
125 #define obstack_chunk_alloc xmalloc
126 #define obstack_chunk_free free
128 #ifndef GET_ENV_PATH_LIST
129 #define GET_ENV_PATH_LIST(VAR,NAME) do { (VAR) = getenv (NAME); } while (0)
132 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
133 #ifndef LIBRARY_PATH_ENV
134 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
138 #define kill(p,s) raise(s)
141 /* If a stage of compilation returns an exit status >= 1,
142 compilation of that file ceases. */
144 #define MIN_FATAL_STATUS 1
146 /* Flag set by cppspec.c to 1. */
149 /* Flag saying to pass the greatest exit code returned by a sub-process
150 to the calling program. */
151 static int pass_exit_codes;
153 /* Definition of string containing the arguments given to configure. */
154 #include "configargs.h"
156 /* Flag saying to print the directories gcc will search through looking for
157 programs, libraries, etc. */
159 static int print_search_dirs;
161 /* Flag saying to print the full filename of this file
162 as found through our usual search mechanism. */
164 static const char *print_file_name = NULL;
166 /* As print_file_name, but search for executable file. */
168 static const char *print_prog_name = NULL;
170 /* Flag saying to print the relative path we'd use to
171 find libgcc.a given the current compiler flags. */
173 static int print_multi_directory;
175 /* Flag saying to print the list of subdirectories and
176 compiler flags used to select them in a standard form. */
178 static int print_multi_lib;
180 /* Flag saying to print the command line options understood by gcc and its
183 static int print_help_list;
185 /* Flag indicating whether we should print the command and arguments */
187 static int verbose_flag;
189 /* Flag indicating whether we should ONLY print the command and
190 arguments (like verbose_flag) without executing the command.
191 Displayed arguments are quoted so that the generated command
192 line is suitable for execution. This is intended for use in
193 shell scripts to capture the driver-generated command line. */
194 static int verbose_only_flag;
196 /* Flag indicating to print target specific command line options. */
198 static int target_help_flag;
200 /* Flag indicating whether we should report subprocess execution times
201 (if this is supported by the system - see pexecute.c). */
203 static int report_times;
205 /* Nonzero means write "temp" files in source directory
206 and use the source file's name in them, and don't delete them. */
208 static int save_temps_flag;
210 /* The compiler version. */
212 static const char *compiler_version;
214 /* The target version specified with -V */
216 static const char *spec_version = DEFAULT_TARGET_VERSION;
218 /* The target machine specified with -b. */
220 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
222 /* Nonzero if cross-compiling.
223 When -b is used, the value comes from the `specs' file. */
226 static const char *cross_compile = "1";
228 static const char *cross_compile = "0";
231 #ifdef MODIFY_TARGET_NAME
233 /* Information on how to alter the target name based on a command-line
234 switch. The only case we support now is simply appending or deleting a
235 string to or from the end of the first part of the configuration name. */
237 static const struct modify_target
239 const char *const sw;
240 const enum add_del {ADD, DELETE} add_del;
241 const char *const str;
243 modify_target[] = MODIFY_TARGET_NAME;
246 /* The number of errors that have occurred; the link phase will not be
247 run if this is non-zero. */
248 static int error_count = 0;
250 /* Greatest exit code of sub-processes that has been encountered up to
252 static int greatest_status = 1;
254 /* This is the obstack which we use to allocate many strings. */
256 static struct obstack obstack;
258 /* This is the obstack to build an environment variable to pass to
259 collect2 that describes all of the relevant switches of what to
260 pass the compiler in building the list of pointers to constructors
263 static struct obstack collect_obstack;
265 /* These structs are used to collect resource usage information for
267 #ifdef HAVE_GETRUSAGE
268 static struct rusage rus, prus;
271 /* Forward declaration for prototypes. */
274 static void init_spec PARAMS ((void));
276 static char **split_directories PARAMS ((const char *, int *));
277 static void free_split_directories PARAMS ((char **));
278 static char *make_relative_prefix PARAMS ((const char *, const char *, const char *));
280 static void store_arg PARAMS ((const char *, int, int));
281 static char *load_specs PARAMS ((const char *));
282 static void read_specs PARAMS ((const char *, int));
283 static void set_spec PARAMS ((const char *, const char *));
284 static struct compiler *lookup_compiler PARAMS ((const char *, size_t, const char *));
285 static char *build_search_list PARAMS ((struct path_prefix *, const char *, int));
286 static void putenv_from_prefixes PARAMS ((struct path_prefix *, const char *));
287 static int access_check PARAMS ((const char *, int));
288 static char *find_a_file PARAMS ((struct path_prefix *, const char *, int));
289 static void add_prefix PARAMS ((struct path_prefix *, const char *,
290 const char *, int, int, int *));
291 static void translate_options PARAMS ((int *, const char *const **));
292 static char *skip_whitespace PARAMS ((char *));
293 static void delete_if_ordinary PARAMS ((const char *));
294 static void delete_temp_files PARAMS ((void));
295 static void delete_failure_queue PARAMS ((void));
296 static void clear_failure_queue PARAMS ((void));
297 static int check_live_switch PARAMS ((int, int));
298 static const char *handle_braces PARAMS ((const char *));
299 static char *save_string PARAMS ((const char *, int));
300 static void set_collect_gcc_options PARAMS ((void));
301 static int do_spec_1 PARAMS ((const char *, int, const char *));
302 static const char *find_file PARAMS ((const char *));
303 static int is_directory PARAMS ((const char *, const char *, int));
304 static void validate_switches PARAMS ((const char *));
305 static void validate_all_switches PARAMS ((void));
306 static void give_switch PARAMS ((int, int, int));
307 static int used_arg PARAMS ((const char *, int));
308 static int default_arg PARAMS ((const char *, int));
309 static void set_multilib_dir PARAMS ((void));
310 static void print_multilib_info PARAMS ((void));
311 static void perror_with_name PARAMS ((const char *));
312 static void pfatal_pexecute PARAMS ((const char *, const char *))
314 static void notice PARAMS ((const char *, ...))
316 static void display_help PARAMS ((void));
317 static void add_preprocessor_option PARAMS ((const char *, int));
318 static void add_assembler_option PARAMS ((const char *, int));
319 static void add_linker_option PARAMS ((const char *, int));
320 static void process_command PARAMS ((int, const char *const *));
321 static int execute PARAMS ((void));
322 static void clear_args PARAMS ((void));
323 static void fatal_error PARAMS ((int));
324 #ifdef ENABLE_SHARED_LIBGCC
325 static void init_gcc_specs PARAMS ((struct obstack *,
326 const char *, const char *,
329 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
330 static const char *convert_filename PARAMS ((const char *, int, int));
333 /* The Specs Language
335 Specs are strings containing lines, each of which (if not blank)
336 is made up of a program name, and arguments separated by spaces.
337 The program name must be exact and start from root, since no path
338 is searched and it is unreliable to depend on the current working directory.
339 Redirection of input or output is not supported; the subprograms must
340 accept filenames saying what files to read and write.
342 In addition, the specs can contain %-sequences to substitute variable text
343 or for conditional text. Here is a table of all defined %-sequences.
344 Note that spaces are not generated automatically around the results of
345 expanding these sequences; therefore, you can concatenate them together
346 or with constant text in a single argument.
348 %% substitute one % into the program name or argument.
349 %i substitute the name of the input file being processed.
350 %b substitute the basename of the input file being processed.
351 This is the substring up to (and not including) the last period
352 and not including the directory.
353 %B same as %b, but include the file suffix (text after the last period).
355 substitute a file name that has suffix SUFFIX and is chosen
356 once per compilation, and mark the argument a la %d. To reduce
357 exposure to denial-of-service attacks, the file name is now
358 chosen in a way that is hard to predict even when previously
359 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
360 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
361 the regexp "[.A-Za-z]*%O"; "%O" is treated exactly as if it
362 had been pre-processed. Previously, %g was simply substituted
363 with a file name chosen once per compilation, without regard
364 to any appended suffix (which was therefore treated just like
365 ordinary text), making such attacks more likely to succeed.
367 like %g, but generates a new temporary file name even if %uSUFFIX
370 substitutes the last file name generated with %uSUFFIX, generating a
371 new one if there is no such last file name. In the absence of any
372 %uSUFFIX, this is just like %gSUFFIX, except they don't share
373 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
374 would involve the generation of two distinct file names, one
375 for each `%g.s' and another for each `%U.s'. Previously, %U was
376 simply substituted with a file name chosen for the previous %u,
377 without regard to any appended suffix.
379 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
380 writable, and if save-temps is off; otherwise, substitute the name
381 of a temporary file, just like %u. This temporary file is not
382 meant for communication between processes, but rather as a junk
385 substitutes .SUFFIX for the suffixes of a matched switch's args when
386 it is subsequently output with %*. SUFFIX is terminated by the next
388 %d marks the argument containing or following the %d as a
389 temporary file name, so that that file will be deleted if CC exits
390 successfully. Unlike %g, this contributes no text to the argument.
391 %w marks the argument containing or following the %w as the
392 "output file" of this compilation. This puts the argument
393 into the sequence of arguments that %o will substitute later.
395 like %{...} but mark last argument supplied within
396 as a file to be deleted on failure.
397 %o substitutes the names of all the output files, with spaces
398 automatically placed around them. You should write spaces
399 around the %o as well or the results are undefined.
400 %o is for use in the specs for running the linker.
401 Input files whose names have no recognized suffix are not compiled
402 at all, but they are included among the output files, so they will
404 %O substitutes the suffix for object files. Note that this is
405 handled specially when it immediately follows %g, %u, or %U
406 (with or without a suffix argument) because of the need for
407 those to form complete file names. The handling is such that
408 %O is treated exactly as if it had already been substituted,
409 except that %g, %u, and %U do not currently support additional
410 SUFFIX characters following %O as they would following, for
412 %p substitutes the standard macro predefinitions for the
413 current target machine. Use this when running cpp.
414 %P like %p, but puts `__' before and after the name of each macro.
415 (Except macros that already have __.)
417 %I Substitute a -iprefix option made from GCC_EXEC_PREFIX.
418 %s current argument is the name of a library or startup file of some sort.
419 Search for that file in a standard list of directories
420 and substitute the full name found.
421 %eSTR Print STR as an error message. STR is terminated by a newline.
422 Use this when inconsistent options are detected.
423 %nSTR Print STR as an notice. STR is terminated by a newline.
424 %x{OPTION} Accumulate an option for %X.
425 %X Output the accumulated linker options specified by compilations.
426 %Y Output the accumulated assembler options specified by compilations.
427 %Z Output the accumulated preprocessor options specified by compilations.
428 %v1 Substitute the major version number of GCC.
429 (For version 2.5.3, this is 2.)
430 %v2 Substitute the minor version number of GCC.
431 (For version 2.5.3, this is 5.)
432 %v3 Substitute the patch level number of GCC.
433 (For version 2.5.3, this is 3.)
434 %a process ASM_SPEC as a spec.
435 This allows config.h to specify part of the spec for running as.
436 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
437 used here. This can be used to run a post-processor after the
438 assembler has done its job.
439 %D Dump out a -L option for each directory in startfile_prefixes.
440 If multilib_dir is set, extra entries are generated with it affixed.
441 %l process LINK_SPEC as a spec.
442 %L process LIB_SPEC as a spec.
443 %G process LIBGCC_SPEC as a spec.
444 %M output multilib_dir with directory separators replaced with "_";
445 if multilib_dir is not set or is ".", output "".
446 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
447 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
448 %C process CPP_SPEC as a spec.
449 %1 process CC1_SPEC as a spec.
450 %2 process CC1PLUS_SPEC as a spec.
451 %| output "-" if the input for the current command is coming from a pipe.
452 %* substitute the variable part of a matched option. (See below.)
453 Note that each comma in the substituted string is replaced by
455 %{S} substitutes the -S switch, if that switch was given to CC.
456 If that switch was not specified, this substitutes nothing.
457 Here S is a metasyntactic variable.
458 %{S*} substitutes all the switches specified to CC whose names start
459 with -S. This is used for -o, -I, etc; switches that take
460 arguments. CC considers `-o foo' as being one switch whose
461 name starts with `o'. %{o*} would substitute this text,
462 including the space; thus, two arguments would be generated.
463 %{^S*} likewise, but don't put a blank between a switch and any args.
464 %{S*&T*} likewise, but preserve order of S and T options (the order
465 of S and T in the spec is not significant). Can be any number
466 of ampersand-separated variables; for each the wild card is
467 optional. Useful for CPP as %{D*&U*&A*}.
468 %{S*:X} substitutes X if one or more switches whose names start with -S are
469 specified to CC. Note that the tail part of the -S option
470 (i.e. the part matched by the `*') will be substituted for each
471 occurrence of %* within X.
472 %{<S} remove all occurrences of -S from the command line.
473 Note - this option is position dependent. % commands in the
474 spec string before this option will see -S, % commands in the
475 spec string after this option will not.
476 %{S:X} substitutes X, but only if the -S switch was given to CC.
477 %{!S:X} substitutes X, but only if the -S switch was NOT given to CC.
478 %{|S:X} like %{S:X}, but if no S switch, substitute `-'.
479 %{|!S:X} like %{!S:X}, but if there is an S switch, substitute `-'.
480 %{.S:X} substitutes X, but only if processing a file with suffix S.
481 %{!.S:X} substitutes X, but only if NOT processing a file with suffix S.
482 %{S|P:X} substitutes X if either -S or -P was given to CC. This may be
483 combined with ! and . as above binding stronger than the OR.
484 %(Spec) processes a specification defined in a specs file as *Spec:
485 %[Spec] as above, but put __ around -D arguments
487 The conditional text X in a %{S:X} or %{!S:X} construct may contain
488 other nested % constructs or spaces, or even newlines. They are
489 processed as usual, as described above.
491 The -O, -f, -m, and -W switches are handled specifically in these
492 constructs. If another value of -O or the negated form of a -f, -m, or
493 -W switch is found later in the command line, the earlier switch
494 value is ignored, except with {S*} where S is just one letter; this
495 passes all matching options.
497 The character | at the beginning of the predicate text is used to indicate
498 that a command should be piped to the following command, but only if -pipe
501 Note that it is built into CC which switches take arguments and which
502 do not. You might think it would be useful to generalize this to
503 allow each compiler's spec to say which switches take arguments. But
504 this cannot be done in a consistent fashion. CC cannot even decide
505 which input files have been specified without knowing which switches
506 take arguments, and it must know which input files to compile in order
507 to tell which compilers to run.
509 CC also knows implicitly that arguments starting in `-l' are to be
510 treated as compiler output files, and passed to the linker in their
511 proper position among the other output files. */
513 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
515 /* config.h can define ASM_SPEC to provide extra args to the assembler
516 or extra switch-translations. */
521 /* config.h can define ASM_FINAL_SPEC to run a post processor after
522 the assembler has run. */
523 #ifndef ASM_FINAL_SPEC
524 #define ASM_FINAL_SPEC ""
527 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
528 or extra switch-translations. */
533 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
534 or extra switch-translations. */
539 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
540 or extra switch-translations. */
542 #define CC1PLUS_SPEC ""
545 /* config.h can define LINK_SPEC to provide extra args to the linker
546 or extra switch-translations. */
551 /* config.h can define LIB_SPEC to override the default libraries. */
553 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
556 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
559 #if defined(LINK_LIBGCC_SPECIAL) || defined(LINK_LIBGCC_SPECIAL_1)
560 /* Have gcc do the search for libgcc.a. */
561 #define LIBGCC_SPEC "libgcc.a%s"
563 #define LIBGCC_SPEC "-lgcc"
567 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
568 #ifndef STARTFILE_SPEC
569 #define STARTFILE_SPEC \
570 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
573 /* config.h can define SWITCHES_NEED_SPACES to control which options
574 require spaces between the option and the argument. */
575 #ifndef SWITCHES_NEED_SPACES
576 #define SWITCHES_NEED_SPACES ""
579 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
581 #define ENDFILE_SPEC ""
585 #define LINKER_NAME "collect2"
588 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
590 #ifndef ASM_DEBUG_SPEC
591 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
592 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
593 # define ASM_DEBUG_SPEC \
594 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
595 ? "%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}" \
596 : "%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}")
598 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
599 # define ASM_DEBUG_SPEC "%{g*:--gstabs}"
601 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
602 # define ASM_DEBUG_SPEC "%{g*:--gdwarf2}"
606 #ifndef ASM_DEBUG_SPEC
607 # define ASM_DEBUG_SPEC ""
610 /* Here is the spec for running the linker, after compiling all files. */
612 /* This is overridable by the target in case they need to specify the
613 -lgcc and -lc order specially, yet not require them to override all
614 of LINK_COMMAND_SPEC. */
615 #ifndef LINK_GCC_C_SEQUENCE_SPEC
616 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
619 /* -u* was put back because both BSD and SysV seem to support it. */
620 /* %{static:} simply prevents an error message if the target machine
621 doesn't handle -static. */
622 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
623 scripts which exist in user specified directories, or in standard
625 #ifndef LINK_COMMAND_SPEC
626 #define LINK_COMMAND_SPEC "\
627 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
628 %(linker) %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r} %{s} %{t}\
629 %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
630 %{static:} %{L*} %(link_libgcc) %o %{!nostdlib:%{!nodefaultlibs:%(link_gcc_c_sequence)}}\
631 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
634 #ifndef LINK_LIBGCC_SPEC
635 # ifdef LINK_LIBGCC_SPECIAL
636 /* Don't generate -L options for startfile prefix list. */
637 # define LINK_LIBGCC_SPEC ""
639 /* Do generate them. */
640 # define LINK_LIBGCC_SPEC "%D"
644 static const char *asm_debug = ASM_DEBUG_SPEC;
645 static const char *cpp_spec = CPP_SPEC;
646 static const char *cpp_predefines = CPP_PREDEFINES;
647 static const char *cc1_spec = CC1_SPEC;
648 static const char *cc1plus_spec = CC1PLUS_SPEC;
649 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
650 static const char *asm_spec = ASM_SPEC;
651 static const char *asm_final_spec = ASM_FINAL_SPEC;
652 static const char *link_spec = LINK_SPEC;
653 static const char *lib_spec = LIB_SPEC;
654 static const char *libgcc_spec = LIBGCC_SPEC;
655 static const char *endfile_spec = ENDFILE_SPEC;
656 static const char *startfile_spec = STARTFILE_SPEC;
657 static const char *switches_need_spaces = SWITCHES_NEED_SPACES;
658 static const char *linker_name_spec = LINKER_NAME;
659 static const char *link_command_spec = LINK_COMMAND_SPEC;
660 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
662 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
663 There should be no need to override these in target dependent files,
664 but we need to copy them to the specs file so that newer versions
665 of the GCC driver can correctly drive older tool chains with the
666 appropriate -B options. */
668 /* When cpplib handles traditional preprocessing, get rid of this, and
669 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
670 that we default the front end language better. */
671 static const char *trad_capable_cpp =
672 "%{traditional|ftraditional|traditional-cpp:tradcpp0}\
673 %{!traditional:%{!ftraditional:%{!traditional-cpp:cc1 -E}}}";
675 static const char *cpp_unique_options =
676 "%{C:%{!E:%eGNU C does not support -C without using -E}}\
677 %{CC:%{!E:%eGNU C does not support -CC without using -E}}\
678 %{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*} %{P} %{$} %I\
679 %{MD:-MD %W{!o: %b.d}%W{o*:%.d%*}}\
680 %{MMD:-MMD %W{!o: %b.d}%W{o*:%.d%*}}\
681 %{M} %{MM} %W{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
682 %{!E:%{!M:%{!MM:%{MD|MMD:%{o*:-MQ %*}}}}}\
683 %{!no-gcc:-D__GNUC__=%v1 -D__GNUC_MINOR__=%v2 -D__GNUC_PATCHLEVEL__=%v3}\
684 %{!undef:%{!ansi:%{!std=*:%p}%{std=gnu*:%p}} %P} %{trigraphs}\
685 %{remap} %{g3:-dD} %{H} %C %{D*&U*&A*} %{i*} %Z %i\
688 /* This contains cpp options which are common with cc1_options and are passed
689 only when preprocessing only to avoid duplication. */
690 static const char *cpp_options =
691 "%(cpp_unique_options) %{std*} %{d*} %{W*&pedantic*} %{w} %{m*} %{f*}\
694 /* NB: This is shared amongst all front-ends. */
695 static const char *cc1_options =
696 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
697 %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\
698 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*} %{ansi}\
699 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
700 %{Qn:-fno-ident} %{--help:--help}\
701 %{--target-help:--target-help}\
702 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
703 %{fsyntax-only:-o %j} %{-param*}";
705 static const char *asm_options =
706 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
708 static const char *invoke_as =
709 "%{!S:-o %{|!pipe:%g.s} |\n as %(asm_options) %{!pipe:%g.s} %A }";
711 /* Some compilers have limits on line lengths, and the multilib_select
712 and/or multilib_matches strings can be very long, so we build them at
714 static struct obstack multilib_obstack;
715 static const char *multilib_select;
716 static const char *multilib_matches;
717 static const char *multilib_defaults;
718 static const char *multilib_exclusions;
719 #include "multilib.h"
721 /* Check whether a particular argument is a default argument. */
723 #ifndef MULTILIB_DEFAULTS
724 #define MULTILIB_DEFAULTS { "" }
727 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
731 struct user_specs *next;
732 const char *filename;
735 static struct user_specs *user_specs_head, *user_specs_tail;
737 /* This defines which switch letters take arguments. */
739 #define DEFAULT_SWITCH_TAKES_ARG(CHAR) \
740 ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o' \
741 || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u' \
742 || (CHAR) == 'I' || (CHAR) == 'm' || (CHAR) == 'x' \
743 || (CHAR) == 'L' || (CHAR) == 'A' || (CHAR) == 'B' || (CHAR) == 'b')
745 #ifndef SWITCH_TAKES_ARG
746 #define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR)
749 /* This defines which multi-letter switches take arguments. */
751 #define DEFAULT_WORD_SWITCH_TAKES_ARG(STR) \
752 (!strcmp (STR, "Tdata") || !strcmp (STR, "Ttext") \
753 || !strcmp (STR, "Tbss") || !strcmp (STR, "include") \
754 || !strcmp (STR, "imacros") || !strcmp (STR, "aux-info") \
755 || !strcmp (STR, "idirafter") || !strcmp (STR, "iprefix") \
756 || !strcmp (STR, "iwithprefix") || !strcmp (STR, "iwithprefixbefore") \
757 || !strcmp (STR, "isystem") || !strcmp (STR, "-param") \
758 || !strcmp (STR, "specs") \
759 || !strcmp (STR, "MF") || !strcmp (STR, "MT") || !strcmp (STR, "MQ"))
761 #ifndef WORD_SWITCH_TAKES_ARG
762 #define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
765 #ifdef HAVE_TARGET_EXECUTABLE_SUFFIX
766 /* This defines which switches stop a full compilation. */
767 #define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \
768 ((CHAR) == 'c' || (CHAR) == 'S')
770 #ifndef SWITCH_CURTAILS_COMPILATION
771 #define SWITCH_CURTAILS_COMPILATION(CHAR) \
772 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR)
776 /* Record the mapping from file suffixes for compilation specs. */
780 const char *suffix; /* Use this compiler for input files
781 whose names end in this suffix. */
783 const char *spec; /* To use this compiler, run this spec. */
785 const char *cpp_spec; /* If non-NULL, substitute this spec
786 for `%C', rather than the usual
790 /* Pointer to a vector of `struct compiler' that gives the spec for
791 compiling a file, based on its suffix.
792 A file that does not end in any of these suffixes will be passed
793 unchanged to the loader and nothing else will be done to it.
795 An entry containing two 0s is used to terminate the vector.
797 If multiple entries match a file, the last matching one is used. */
799 static struct compiler *compilers;
801 /* Number of entries in `compilers', not counting the null terminator. */
803 static int n_compilers;
805 /* The default list of file name suffixes and their compilation specs. */
807 static const struct compiler default_compilers[] =
809 /* Add lists of suffixes of known languages here. If those languages
810 were not present when we built the driver, we will hit these copies
811 and be given a more meaningful error than "file not used since
812 linking is not done". */
813 {".m", "#Objective-C", 0}, {".mi", "#Objective-C", 0},
814 {".cc", "#C++", 0}, {".cxx", "#C++", 0}, {".cpp", "#C++", 0},
815 {".cp", "#C++", 0}, {".c++", "#C++", 0}, {".C", "#C++", 0},
817 {".ads", "#Ada", 0}, {".adb", "#Ada", 0},
818 {".f", "#Fortran", 0}, {".for", "#Fortran", 0}, {".fpp", "#Fortran", 0},
819 {".F", "#Fortran", 0}, {".FOR", "#Fortran", 0}, {".FPP", "#Fortran", 0},
820 {".r", "#Ratfor", 0},
821 {".p", "#Pascal", 0}, {".pas", "#Pascal", 0},
822 {".java", "#Java", 0}, {".class", "#Java", 0},
823 {".zip", "#Java", 0}, {".jar", "#Java", 0},
824 /* Next come the entries for C. */
827 /* cc1 has an integrated ISO C preprocessor. We should invoke the
828 external preprocessor if -save-temps is given. */
829 "%{E|M|MM:%(trad_capable_cpp) %{ansi:-std=c89} %(cpp_options)}\
831 %{traditional|ftraditional:\
832 %eGNU C no longer supports -traditional without -E}\
833 %{save-temps|traditional-cpp:%(trad_capable_cpp) \
834 %{ansi:-std=c89} %(cpp_options) %b.i \n\
835 cc1 -fpreprocessed %b.i %(cc1_options)}\
836 %{!save-temps:%{!traditional-cpp:\
837 cc1 %{ansi:-std=c89} %(cpp_unique_options) %(cc1_options)}}\
838 %{!fsyntax-only:%(invoke_as)}}}}", 0},
840 "%{!E:%e-E required when input is from standard input}\
841 %(trad_capable_cpp) %{ansi:-std=c89} %(cpp_options)", 0},
842 {".h", "@c-header", 0},
844 "%{!E:%ecompilation of header file requested} \
845 %(trad_capable_cpp) %{ansi:-std=c89} %(cpp_options)", 0},
846 {".i", "@cpp-output", 0},
848 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0},
849 {".s", "@assembler", 0},
851 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0},
852 {".S", "@assembler-with-cpp", 0},
853 {"@assembler-with-cpp",
854 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
855 %{!M:%{!MM:%{!E:%{!S:-o %{|!pipe:%g.s} |\n\
856 as %(asm_debug) %(asm_options) %{!pipe:%g.s} %A }}}}", 0},
858 /* Mark end of table */
862 /* Number of elements in default_compilers, not counting the terminator. */
864 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
866 /* A vector of options to give to the linker.
867 These options are accumulated by %x,
868 and substituted into the linker command with %X. */
869 static int n_linker_options;
870 static char **linker_options;
872 /* A vector of options to give to the assembler.
873 These options are accumulated by -Wa,
874 and substituted into the assembler command with %Y. */
875 static int n_assembler_options;
876 static char **assembler_options;
878 /* A vector of options to give to the preprocessor.
879 These options are accumulated by -Wp,
880 and substituted into the preprocessor command with %Z. */
881 static int n_preprocessor_options;
882 static char **preprocessor_options;
884 /* Define how to map long options into short ones. */
886 /* This structure describes one mapping. */
889 /* The long option's name. */
890 const char *const name;
891 /* The equivalent short option. */
892 const char *const equivalent;
893 /* Argument info. A string of flag chars; NULL equals no options.
894 a => argument required.
895 o => argument optional.
896 j => join argument to equivalent, making one word.
897 * => require other text after NAME as an argument. */
898 const char *const arg_info;
901 /* This is the table of mappings. Mappings are tried sequentially
902 for each option encountered; the first one that matches, wins. */
904 static const struct option_map option_map[] =
906 {"--all-warnings", "-Wall", 0},
907 {"--ansi", "-ansi", 0},
908 {"--assemble", "-S", 0},
909 {"--assert", "-A", "a"},
910 {"--classpath", "-fclasspath=", "aj"},
911 {"--bootclasspath", "-fbootclasspath=", "aj"},
912 {"--CLASSPATH", "-fclasspath=", "aj"},
913 {"--comments", "-C", 0},
914 {"--comments-in-macros", "-CC", 0},
915 {"--compile", "-c", 0},
916 {"--debug", "-g", "oj"},
917 {"--define-macro", "-D", "aj"},
918 {"--dependencies", "-M", 0},
919 {"--dump", "-d", "a"},
920 {"--dumpbase", "-dumpbase", "a"},
921 {"--entry", "-e", 0},
922 {"--extra-warnings", "-W", 0},
923 {"--for-assembler", "-Wa", "a"},
924 {"--for-linker", "-Xlinker", "a"},
925 {"--force-link", "-u", "a"},
926 {"--imacros", "-imacros", "a"},
927 {"--include", "-include", "a"},
928 {"--include-barrier", "-I-", 0},
929 {"--include-directory", "-I", "aj"},
930 {"--include-directory-after", "-idirafter", "a"},
931 {"--include-prefix", "-iprefix", "a"},
932 {"--include-with-prefix", "-iwithprefix", "a"},
933 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
934 {"--include-with-prefix-after", "-iwithprefix", "a"},
935 {"--language", "-x", "a"},
936 {"--library-directory", "-L", "a"},
937 {"--machine", "-m", "aj"},
938 {"--machine-", "-m", "*j"},
939 {"--no-line-commands", "-P", 0},
940 {"--no-precompiled-includes", "-noprecomp", 0},
941 {"--no-standard-includes", "-nostdinc", 0},
942 {"--no-standard-libraries", "-nostdlib", 0},
943 {"--no-warnings", "-w", 0},
944 {"--optimize", "-O", "oj"},
945 {"--output", "-o", "a"},
946 {"--output-class-directory", "-foutput-class-dir=", "ja"},
947 {"--param", "--param", "a"},
948 {"--pedantic", "-pedantic", 0},
949 {"--pedantic-errors", "-pedantic-errors", 0},
950 {"--pipe", "-pipe", 0},
951 {"--prefix", "-B", "a"},
952 {"--preprocess", "-E", 0},
953 {"--print-search-dirs", "-print-search-dirs", 0},
954 {"--print-file-name", "-print-file-name=", "aj"},
955 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
956 {"--print-missing-file-dependencies", "-MG", 0},
957 {"--print-multi-lib", "-print-multi-lib", 0},
958 {"--print-multi-directory", "-print-multi-directory", 0},
959 {"--print-prog-name", "-print-prog-name=", "aj"},
960 {"--profile", "-p", 0},
961 {"--profile-blocks", "-a", 0},
962 {"--quiet", "-q", 0},
963 {"--resource", "-fcompile-resource=", "aj"},
964 {"--save-temps", "-save-temps", 0},
965 {"--shared", "-shared", 0},
966 {"--silent", "-q", 0},
967 {"--specs", "-specs=", "aj"},
968 {"--static", "-static", 0},
969 {"--std", "-std=", "aj"},
970 {"--symbolic", "-symbolic", 0},
971 {"--target", "-b", "a"},
972 {"--time", "-time", 0},
973 {"--trace-includes", "-H", 0},
974 {"--traditional", "-traditional", 0},
975 {"--traditional-cpp", "-traditional-cpp", 0},
976 {"--trigraphs", "-trigraphs", 0},
977 {"--undefine-macro", "-U", "aj"},
978 {"--use-version", "-V", "a"},
979 {"--user-dependencies", "-MM", 0},
980 {"--verbose", "-v", 0},
981 {"--warn-", "-W", "*j"},
982 {"--write-dependencies", "-MD", 0},
983 {"--write-user-dependencies", "-MMD", 0},
988 #ifdef TARGET_OPTION_TRANSLATE_TABLE
989 static const struct {
990 const char *const option_found;
991 const char *const replacements;
992 } target_option_translations[] =
994 TARGET_OPTION_TRANSLATE_TABLE,
999 /* Translate the options described by *ARGCP and *ARGVP.
1000 Make a new vector and store it back in *ARGVP,
1001 and store its length in *ARGVC. */
1004 translate_options (argcp, argvp)
1006 const char *const **argvp;
1010 const char *const *argv = *argvp;
1011 int newvsize = (argc + 2) * 2 * sizeof (const char *);
1013 (const char **) xmalloc (newvsize);
1017 newv[newindex++] = argv[i++];
1021 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1025 target_option_translations[tott_idx].option_found;
1028 if (strcmp (target_option_translations[tott_idx].option_found,
1035 for (sp = target_option_translations[tott_idx].replacements;
1042 newvsize += spaces * sizeof (const char *);
1043 newv = (const char **) xrealloc (newv, newvsize);
1045 sp = target_option_translations[tott_idx].replacements;
1054 newv[newindex++] = np;
1055 while (*np != ' ' && *np)
1066 if (target_option_translations[tott_idx].option_found)
1070 /* Translate -- options. */
1071 if (argv[i][0] == '-' && argv[i][1] == '-')
1074 /* Find a mapping that applies to this option. */
1075 for (j = 0; j < ARRAY_SIZE (option_map); j++)
1077 size_t optlen = strlen (option_map[j].name);
1078 size_t arglen = strlen (argv[i]);
1079 size_t complen = arglen > optlen ? optlen : arglen;
1080 const char *arginfo = option_map[j].arg_info;
1085 if (!strncmp (argv[i], option_map[j].name, complen))
1087 const char *arg = 0;
1089 if (arglen < optlen)
1092 for (k = j + 1; k < ARRAY_SIZE (option_map); k++)
1093 if (strlen (option_map[k].name) >= arglen
1094 && !strncmp (argv[i], option_map[k].name, arglen))
1096 error ("ambiguous abbreviation %s", argv[i]);
1100 if (k != ARRAY_SIZE (option_map))
1104 if (arglen > optlen)
1106 /* If the option has an argument, accept that. */
1107 if (argv[i][optlen] == '=')
1108 arg = argv[i] + optlen + 1;
1110 /* If this mapping requires extra text at end of name,
1111 accept that as "argument". */
1112 else if (strchr (arginfo, '*') != 0)
1113 arg = argv[i] + optlen;
1115 /* Otherwise, extra text at end means mismatch.
1116 Try other mappings. */
1121 else if (strchr (arginfo, '*') != 0)
1123 error ("incomplete `%s' option", option_map[j].name);
1127 /* Handle arguments. */
1128 if (strchr (arginfo, 'a') != 0)
1134 error ("missing argument to `%s' option",
1135 option_map[j].name);
1142 else if (strchr (arginfo, '*') != 0)
1144 else if (strchr (arginfo, 'o') == 0)
1147 error ("extraneous argument to `%s' option",
1148 option_map[j].name);
1152 /* Store the translation as one argv elt or as two. */
1153 if (arg != 0 && strchr (arginfo, 'j') != 0)
1154 newv[newindex++] = concat (option_map[j].equivalent, arg,
1158 newv[newindex++] = option_map[j].equivalent;
1159 newv[newindex++] = arg;
1162 newv[newindex++] = option_map[j].equivalent;
1170 /* Handle old-fashioned options--just copy them through,
1171 with their arguments. */
1172 else if (argv[i][0] == '-')
1174 const char *p = argv[i] + 1;
1178 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
1179 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
1180 else if (WORD_SWITCH_TAKES_ARG (p))
1181 nskip += WORD_SWITCH_TAKES_ARG (p);
1182 else if ((c == 'B' || c == 'b' || c == 'x')
1185 else if (! strcmp (p, "Xlinker"))
1188 /* Watch out for an option at the end of the command line that
1189 is missing arguments, and avoid skipping past the end of the
1191 if (nskip + i > argc)
1196 newv[newindex++] = argv[i++];
1201 /* Ordinary operands, or +e options. */
1202 newv[newindex++] = argv[i++];
1217 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1218 be considered whitespace. */
1219 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1221 else if (*p == '\n' || *p == ' ' || *p == '\t')
1235 /* Structures to keep track of prefixes to try when looking for files. */
1239 const char *prefix; /* String to prepend to the path. */
1240 struct prefix_list *next; /* Next in linked list. */
1241 int require_machine_suffix; /* Don't use without machine_suffix. */
1242 /* 2 means try both machine_suffix and just_machine_suffix. */
1243 int *used_flag_ptr; /* 1 if a file was found with this prefix. */
1244 int priority; /* Sort key - priority within list */
1249 struct prefix_list *plist; /* List of prefixes to try */
1250 int max_len; /* Max length of a prefix in PLIST */
1251 const char *name; /* Name of this list (used in config stuff) */
1254 /* List of prefixes to try when looking for executables. */
1256 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1258 /* List of prefixes to try when looking for startup (crt0) files. */
1260 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1262 /* List of prefixes to try when looking for include files. */
1264 static struct path_prefix include_prefixes = { 0, 0, "include" };
1266 /* Suffix to attach to directories searched for commands.
1267 This looks like `MACHINE/VERSION/'. */
1269 static const char *machine_suffix = 0;
1271 /* Suffix to attach to directories searched for commands.
1272 This is just `MACHINE/'. */
1274 static const char *just_machine_suffix = 0;
1276 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1278 static const char *gcc_exec_prefix;
1280 /* Default prefixes to attach to command names. */
1282 #ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */
1283 #undef MD_EXEC_PREFIX
1284 #undef MD_STARTFILE_PREFIX
1285 #undef MD_STARTFILE_PREFIX_1
1288 /* If no prefixes defined, use the null string, which will disable them. */
1289 #ifndef MD_EXEC_PREFIX
1290 #define MD_EXEC_PREFIX ""
1292 #ifndef MD_STARTFILE_PREFIX
1293 #define MD_STARTFILE_PREFIX ""
1295 #ifndef MD_STARTFILE_PREFIX_1
1296 #define MD_STARTFILE_PREFIX_1 ""
1299 /* Supply defaults for the standard prefixes. */
1301 #ifndef STANDARD_EXEC_PREFIX
1302 #define STANDARD_EXEC_PREFIX "/usr/local/lib/gcc-lib/"
1304 #ifndef STANDARD_STARTFILE_PREFIX
1305 #define STANDARD_STARTFILE_PREFIX "/usr/local/lib/"
1307 #ifndef TOOLDIR_BASE_PREFIX
1308 #define TOOLDIR_BASE_PREFIX "/usr/local/"
1310 #ifndef STANDARD_BINDIR_PREFIX
1311 #define STANDARD_BINDIR_PREFIX "/usr/local/bin"
1314 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1315 static const char *const standard_exec_prefix_1 = "/usr/lib/gcc/";
1316 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1318 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1319 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1320 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1321 static const char *const standard_startfile_prefix_1 = "/lib/";
1322 static const char *const standard_startfile_prefix_2 = "/usr/lib/";
1324 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1325 static const char *tooldir_prefix;
1327 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1329 /* Subdirectory to use for locating libraries. Set by
1330 set_multilib_dir based on the compilation options. */
1332 static const char *multilib_dir;
1334 /* Structure to keep track of the specs that have been defined so far.
1335 These are accessed using %(specname) or %[specname] in a compiler
1340 /* The following 2 fields must be first */
1341 /* to allow EXTRA_SPECS to be initialized */
1342 const char *name; /* name of the spec. */
1343 const char *ptr; /* available ptr if no static pointer */
1345 /* The following fields are not initialized */
1346 /* by EXTRA_SPECS */
1347 const char **ptr_spec; /* pointer to the spec itself. */
1348 struct spec_list *next; /* Next spec in linked list. */
1349 int name_len; /* length of the name */
1350 int alloc_p; /* whether string was allocated */
1353 #define INIT_STATIC_SPEC(NAME,PTR) \
1354 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1356 /* List of statically defined specs. */
1357 static struct spec_list static_specs[] =
1359 INIT_STATIC_SPEC ("asm", &asm_spec),
1360 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1361 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1362 INIT_STATIC_SPEC ("asm_options", &asm_options),
1363 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1364 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1365 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1366 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1367 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1368 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1369 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1370 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1371 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1372 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1373 INIT_STATIC_SPEC ("link", &link_spec),
1374 INIT_STATIC_SPEC ("lib", &lib_spec),
1375 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1376 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1377 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces),
1378 INIT_STATIC_SPEC ("predefines", &cpp_predefines),
1379 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1380 INIT_STATIC_SPEC ("version", &compiler_version),
1381 INIT_STATIC_SPEC ("multilib", &multilib_select),
1382 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1383 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1384 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1385 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1386 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1387 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1388 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1389 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1390 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1393 #ifdef EXTRA_SPECS /* additional specs needed */
1394 /* Structure to keep track of just the first two args of a spec_list.
1395 That is all that the EXTRA_SPECS macro gives us. */
1398 const char *const name;
1399 const char *const ptr;
1402 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1403 static struct spec_list *extra_specs = (struct spec_list *) 0;
1406 /* List of dynamically allocates specs that have been defined so far. */
1408 static struct spec_list *specs = (struct spec_list *) 0;
1410 /* Add appropriate libgcc specs to OBSTACK, taking into account
1411 various permutations of -shared-libgcc, -shared, and such. */
1413 #ifdef ENABLE_SHARED_LIBGCC
1415 init_gcc_specs (obstack, shared_name, static_name, eh_name)
1416 struct obstack *obstack;
1417 const char *shared_name;
1418 const char *static_name;
1419 const char *eh_name;
1423 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name,
1424 "}%{!static:%{!static-libgcc:",
1425 "%{!shared:%{!shared-libgcc:", static_name, " ",
1426 eh_name, "}%{shared-libgcc:", shared_name, " ",
1427 static_name, "}}%{shared:",
1429 "%{shared-libgcc:", shared_name,
1430 "}%{!shared-libgcc:", static_name, "}",
1436 obstack_grow (obstack, buf, strlen (buf));
1439 #endif /* ENABLE_SHARED_LIBGCC */
1441 /* Initialize the specs lookup routines. */
1446 struct spec_list *next = (struct spec_list *) 0;
1447 struct spec_list *sl = (struct spec_list *) 0;
1451 return; /* Already initialized. */
1454 notice ("Using built-in specs.\n");
1457 extra_specs = (struct spec_list *)
1458 xcalloc (sizeof (struct spec_list), ARRAY_SIZE (extra_specs_1));
1460 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1462 sl = &extra_specs[i];
1463 sl->name = extra_specs_1[i].name;
1464 sl->ptr = extra_specs_1[i].ptr;
1466 sl->name_len = strlen (sl->name);
1467 sl->ptr_spec = &sl->ptr;
1472 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1474 sl = &static_specs[i];
1479 #ifdef ENABLE_SHARED_LIBGCC
1480 /* ??? If neither -shared-libgcc nor --static-libgcc was
1481 seen, then we should be making an educated guess. Some proposed
1482 heuristics for ELF include:
1484 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1485 program will be doing dynamic loading, which will likely
1486 need the shared libgcc.
1488 (2) If "-ldl", then it's also a fair bet that we're doing
1491 (3) For each ET_DYN we're linking against (either through -lfoo
1492 or /some/path/foo.so), check to see whether it or one of
1493 its dependencies depends on a shared libgcc.
1497 If the runtime is fixed to look for program headers instead
1498 of calling __register_frame_info at all, for each object,
1499 use the shared libgcc if any EH symbol referenced.
1501 If crtstuff is fixed to not invoke __register_frame_info
1502 automatically, for each object, use the shared libgcc if
1503 any non-empty unwind section found.
1505 Doing any of this probably requires invoking an external program to
1506 do the actual object file scanning. */
1508 const char *p = libgcc_spec;
1511 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1512 when given the proper command line arguments. */
1515 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1517 init_gcc_specs (&obstack,
1518 #ifdef NO_SHARED_LIBGCC_MULTILIB
1529 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1531 /* Ug. We don't know shared library extensions. Hope that
1532 systems that use this form don't do shared libraries. */
1533 init_gcc_specs (&obstack,
1534 #ifdef NO_SHARED_LIBGCC_MULTILIB
1547 obstack_1grow (&obstack, *p);
1548 in_sep = (*p == ' ');
1553 obstack_1grow (&obstack, '\0');
1554 libgcc_spec = obstack_finish (&obstack);
1557 #ifdef USE_AS_TRADITIONAL_FORMAT
1558 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1560 static const char tf[] = "--traditional-format ";
1561 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1562 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1563 asm_spec = obstack_finish (&obstack);
1567 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1568 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1569 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1570 link_spec = obstack_finish (&obstack);
1576 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1577 removed; If the spec starts with a + then SPEC is added to the end of the
1581 set_spec (name, spec)
1585 struct spec_list *sl;
1586 const char *old_spec;
1587 int name_len = strlen (name);
1590 /* If this is the first call, initialize the statically allocated specs. */
1593 struct spec_list *next = (struct spec_list *) 0;
1594 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1596 sl = &static_specs[i];
1603 /* See if the spec already exists. */
1604 for (sl = specs; sl; sl = sl->next)
1605 if (name_len == sl->name_len && !strcmp (sl->name, name))
1610 /* Not found - make it. */
1611 sl = (struct spec_list *) xmalloc (sizeof (struct spec_list));
1612 sl->name = xstrdup (name);
1613 sl->name_len = name_len;
1614 sl->ptr_spec = &sl->ptr;
1616 *(sl->ptr_spec) = "";
1621 old_spec = *(sl->ptr_spec);
1622 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1623 ? concat (old_spec, spec + 1, NULL)
1628 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1631 /* Free the old spec. */
1632 if (old_spec && sl->alloc_p)
1633 free ((PTR) old_spec);
1638 /* Accumulate a command (program name and args), and run it. */
1640 /* Vector of pointers to arguments in the current line of specifications. */
1642 static const char **argbuf;
1644 /* Number of elements allocated in argbuf. */
1646 static int argbuf_length;
1648 /* Number of elements in argbuf currently in use (containing args). */
1650 static int argbuf_index;
1652 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1653 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1656 static struct temp_name {
1657 const char *suffix; /* suffix associated with the code. */
1658 int length; /* strlen (suffix). */
1659 int unique; /* Indicates whether %g or %u/%U was used. */
1660 const char *filename; /* associated filename. */
1661 int filename_length; /* strlen (filename). */
1662 struct temp_name *next;
1665 /* Number of commands executed so far. */
1667 static int execution_count;
1669 /* Number of commands that exited with a signal. */
1671 static int signal_count;
1673 /* Name with which this program was invoked. */
1675 static const char *programname;
1677 /* Clear out the vector of arguments (after a command is executed). */
1685 /* Add one argument to the vector at the end.
1686 This is done when a space is seen or at the end of the line.
1687 If DELETE_ALWAYS is nonzero, the arg is a filename
1688 and the file should be deleted eventually.
1689 If DELETE_FAILURE is nonzero, the arg is a filename
1690 and the file should be deleted if this compilation fails. */
1693 store_arg (arg, delete_always, delete_failure)
1695 int delete_always, delete_failure;
1697 if (argbuf_index + 1 == argbuf_length)
1699 = (const char **) xrealloc (argbuf,
1700 (argbuf_length *= 2) * sizeof (const char *));
1702 argbuf[argbuf_index++] = arg;
1703 argbuf[argbuf_index] = 0;
1705 if (delete_always || delete_failure)
1706 record_temp_file (arg, delete_always, delete_failure);
1709 /* Load specs from a file name named FILENAME, replacing occurrences of
1710 various different types of line-endings, \r\n, \n\r and just \r, with
1714 load_specs (filename)
1715 const char *filename;
1719 struct stat statbuf;
1726 notice ("Reading specs from %s\n", filename);
1728 /* Open and stat the file. */
1729 desc = open (filename, O_RDONLY, 0);
1731 pfatal_with_name (filename);
1732 if (stat (filename, &statbuf) < 0)
1733 pfatal_with_name (filename);
1735 /* Read contents of file into BUFFER. */
1736 buffer = xmalloc ((unsigned) statbuf.st_size + 1);
1737 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1739 pfatal_with_name (filename);
1740 buffer[readlen] = 0;
1743 specs = xmalloc (readlen + 1);
1745 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1751 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1753 else if (*(buffer_p + 1) == '\n') /* \r\n */
1767 /* Read compilation specs from a file named FILENAME,
1768 replacing the default ones.
1770 A suffix which starts with `*' is a definition for
1771 one of the machine-specific sub-specs. The "suffix" should be
1772 *asm, *cc1, *cpp, *link, *startfile, etc.
1773 The corresponding spec is stored in asm_spec, etc.,
1774 rather than in the `compilers' vector.
1776 Anything invalid in the file is a fatal error. */
1779 read_specs (filename, main_p)
1780 const char *filename;
1786 buffer = load_specs (filename);
1788 /* Scan BUFFER for specs, putting them in the vector. */
1794 char *in, *out, *p1, *p2, *p3;
1796 /* Advance P in BUFFER to the next nonblank nocomment line. */
1797 p = skip_whitespace (p);
1801 /* Is this a special command that starts with '%'? */
1802 /* Don't allow this for the main specs file, since it would
1803 encourage people to overwrite it. */
1804 if (*p == '%' && !main_p)
1807 while (*p && *p != '\n')
1813 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1814 && (p1[sizeof "%include" - 1] == ' '
1815 || p1[sizeof "%include" - 1] == '\t'))
1819 p1 += sizeof ("%include");
1820 while (*p1 == ' ' || *p1 == '\t')
1823 if (*p1++ != '<' || p[-2] != '>')
1824 fatal ("specs %%include syntax malformed after %ld characters",
1825 (long) (p1 - buffer + 1));
1828 new_filename = find_a_file (&startfile_prefixes, p1, R_OK);
1829 read_specs (new_filename ? new_filename : p1, FALSE);
1832 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1833 && (p1[sizeof "%include_noerr" - 1] == ' '
1834 || p1[sizeof "%include_noerr" - 1] == '\t'))
1838 p1 += sizeof "%include_noerr";
1839 while (*p1 == ' ' || *p1 == '\t')
1842 if (*p1++ != '<' || p[-2] != '>')
1843 fatal ("specs %%include syntax malformed after %ld characters",
1844 (long) (p1 - buffer + 1));
1847 new_filename = find_a_file (&startfile_prefixes, p1, R_OK);
1849 read_specs (new_filename, FALSE);
1850 else if (verbose_flag)
1851 notice ("could not find specs file %s\n", p1);
1854 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1855 && (p1[sizeof "%rename" - 1] == ' '
1856 || p1[sizeof "%rename" - 1] == '\t'))
1859 struct spec_list *sl;
1860 struct spec_list *newsl;
1862 /* Get original name. */
1863 p1 += sizeof "%rename";
1864 while (*p1 == ' ' || *p1 == '\t')
1867 if (! ISALPHA ((unsigned char) *p1))
1868 fatal ("specs %%rename syntax malformed after %ld characters",
1869 (long) (p1 - buffer));
1872 while (*p2 && !ISSPACE ((unsigned char) *p2))
1875 if (*p2 != ' ' && *p2 != '\t')
1876 fatal ("specs %%rename syntax malformed after %ld characters",
1877 (long) (p2 - buffer));
1881 while (*p2 == ' ' || *p2 == '\t')
1884 if (! ISALPHA ((unsigned char) *p2))
1885 fatal ("specs %%rename syntax malformed after %ld characters",
1886 (long) (p2 - buffer));
1888 /* Get new spec name. */
1890 while (*p3 && !ISSPACE ((unsigned char) *p3))
1894 fatal ("specs %%rename syntax malformed after %ld characters",
1895 (long) (p3 - buffer));
1898 for (sl = specs; sl; sl = sl->next)
1899 if (name_len == sl->name_len && !strcmp (sl->name, p1))
1903 fatal ("specs %s spec was not found to be renamed", p1);
1905 if (strcmp (p1, p2) == 0)
1908 for (newsl = specs; newsl; newsl = newsl->next)
1909 if (strcmp (newsl->name, p2) == 0)
1910 fatal ("%s: attempt to rename spec '%s' to already defined spec '%s'",
1915 notice ("rename spec %s to %s\n", p1, p2);
1917 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
1921 set_spec (p2, *(sl->ptr_spec));
1923 free ((PTR) *(sl->ptr_spec));
1925 *(sl->ptr_spec) = "";
1930 fatal ("specs unknown %% command after %ld characters",
1931 (long) (p1 - buffer));
1934 /* Find the colon that should end the suffix. */
1936 while (*p1 && *p1 != ':' && *p1 != '\n')
1939 /* The colon shouldn't be missing. */
1941 fatal ("specs file malformed after %ld characters",
1942 (long) (p1 - buffer));
1944 /* Skip back over trailing whitespace. */
1946 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
1949 /* Copy the suffix to a string. */
1950 suffix = save_string (p, p2 - p);
1951 /* Find the next line. */
1952 p = skip_whitespace (p1 + 1);
1954 fatal ("specs file malformed after %ld characters",
1955 (long) (p - buffer));
1958 /* Find next blank line or end of string. */
1959 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
1962 /* Specs end at the blank line and do not include the newline. */
1963 spec = save_string (p, p1 - p);
1966 /* Delete backslash-newline sequences from the spec. */
1971 if (in[0] == '\\' && in[1] == '\n')
1973 else if (in[0] == '#')
1974 while (*in && *in != '\n')
1982 if (suffix[0] == '*')
1984 if (! strcmp (suffix, "*link_command"))
1985 link_command_spec = spec;
1987 set_spec (suffix + 1, spec);
1991 /* Add this pair to the vector. */
1993 = ((struct compiler *)
1994 xrealloc (compilers,
1995 (n_compilers + 2) * sizeof (struct compiler)));
1997 compilers[n_compilers].suffix = suffix;
1998 compilers[n_compilers].spec = spec;
2000 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2004 link_command_spec = spec;
2007 if (link_command_spec == 0)
2008 fatal ("spec file has no spec for linking");
2011 /* Record the names of temporary files we tell compilers to write,
2012 and delete them at the end of the run. */
2014 /* This is the common prefix we use to make temp file names.
2015 It is chosen once for each run of this program.
2016 It is substituted into a spec by %g or %j.
2017 Thus, all temp file names contain this prefix.
2018 In practice, all temp file names start with this prefix.
2020 This prefix comes from the envvar TMPDIR if it is defined;
2021 otherwise, from the P_tmpdir macro if that is defined;
2022 otherwise, in /usr/tmp or /tmp;
2023 or finally the current directory if all else fails. */
2025 static const char *temp_filename;
2027 /* Length of the prefix. */
2029 static int temp_filename_length;
2031 /* Define the list of temporary files to delete. */
2036 struct temp_file *next;
2039 /* Queue of files to delete on success or failure of compilation. */
2040 static struct temp_file *always_delete_queue;
2041 /* Queue of files to delete on failure of compilation. */
2042 static struct temp_file *failure_delete_queue;
2044 /* Record FILENAME as a file to be deleted automatically.
2045 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2046 otherwise delete it in any case.
2047 FAIL_DELETE nonzero means delete it if a compilation step fails;
2048 otherwise delete it in any case. */
2051 record_temp_file (filename, always_delete, fail_delete)
2052 const char *filename;
2056 char *const name = xstrdup (filename);
2060 struct temp_file *temp;
2061 for (temp = always_delete_queue; temp; temp = temp->next)
2062 if (! strcmp (name, temp->name))
2065 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
2066 temp->next = always_delete_queue;
2068 always_delete_queue = temp;
2075 struct temp_file *temp;
2076 for (temp = failure_delete_queue; temp; temp = temp->next)
2077 if (! strcmp (name, temp->name))
2080 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
2081 temp->next = failure_delete_queue;
2083 failure_delete_queue = temp;
2089 /* Delete all the temporary files whose names we previously recorded. */
2092 delete_if_ordinary (name)
2099 printf ("Delete %s? (y or n) ", name);
2103 while ((c = getchar ()) != '\n' && c != EOF)
2106 if (i == 'y' || i == 'Y')
2108 if (stat (name, &st) >= 0 && S_ISREG (st.st_mode))
2109 if (unlink (name) < 0)
2111 perror_with_name (name);
2115 delete_temp_files ()
2117 struct temp_file *temp;
2119 for (temp = always_delete_queue; temp; temp = temp->next)
2120 delete_if_ordinary (temp->name);
2121 always_delete_queue = 0;
2124 /* Delete all the files to be deleted on error. */
2127 delete_failure_queue ()
2129 struct temp_file *temp;
2131 for (temp = failure_delete_queue; temp; temp = temp->next)
2132 delete_if_ordinary (temp->name);
2136 clear_failure_queue ()
2138 failure_delete_queue = 0;
2141 /* Build a list of search directories from PATHS.
2142 PREFIX is a string to prepend to the list.
2143 If CHECK_DIR_P is non-zero we ensure the directory exists.
2144 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2145 It is also used by the --print-search-dirs flag. */
2148 build_search_list (paths, prefix, check_dir_p)
2149 struct path_prefix *paths;
2153 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0;
2155 = (just_machine_suffix) ? strlen (just_machine_suffix) : 0;
2156 int first_time = TRUE;
2157 struct prefix_list *pprefix;
2159 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2160 obstack_1grow (&collect_obstack, '=');
2162 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next)
2164 int len = strlen (pprefix->prefix);
2168 || is_directory (pprefix->prefix, machine_suffix, 0)))
2171 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2174 obstack_grow (&collect_obstack, pprefix->prefix, len);
2175 obstack_grow (&collect_obstack, machine_suffix, suffix_len);
2178 if (just_machine_suffix
2179 && pprefix->require_machine_suffix == 2
2181 || is_directory (pprefix->prefix, just_machine_suffix, 0)))
2184 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2187 obstack_grow (&collect_obstack, pprefix->prefix, len);
2188 obstack_grow (&collect_obstack, just_machine_suffix,
2192 if (! pprefix->require_machine_suffix)
2195 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2198 obstack_grow (&collect_obstack, pprefix->prefix, len);
2202 obstack_1grow (&collect_obstack, '\0');
2203 return obstack_finish (&collect_obstack);
2206 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2210 putenv_from_prefixes (paths, env_var)
2211 struct path_prefix *paths;
2212 const char *env_var;
2214 putenv (build_search_list (paths, env_var, 1));
2219 /* FIXME: the location independence code for VMS is hairier than this,
2220 and hasn't been written. */
2222 /* Split a filename into component directories. */
2225 split_directories (name, ptr_num_dirs)
2234 /* Count the number of directories. Special case MSDOS disk names as part
2235 of the initial directory. */
2237 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2238 if (name[1] == ':' && IS_DIR_SEPARATOR (name[2]))
2243 #endif /* HAVE_DOS_BASED_FILE_SYSTEM */
2245 while ((ch = *p++) != '\0')
2247 if (IS_DIR_SEPARATOR (ch))
2250 while (IS_DIR_SEPARATOR (*p))
2255 dirs = (char **) xmalloc (sizeof (char *) * (num_dirs + 2));
2257 /* Now copy the directory parts. */
2260 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2261 if (name[1] == ':' && IS_DIR_SEPARATOR (name[2]))
2263 dirs[num_dirs++] = save_string (p, 3);
2266 #endif /* HAVE_DOS_BASED_FILE_SYSTEM */
2269 while ((ch = *p++) != '\0')
2271 if (IS_DIR_SEPARATOR (ch))
2273 while (IS_DIR_SEPARATOR (*p))
2276 dirs[num_dirs++] = save_string (q, p - q);
2282 dirs[num_dirs++] = save_string (q, p - 1 - q);
2284 dirs[num_dirs] = NULL;
2286 *ptr_num_dirs = num_dirs;
2291 /* Release storage held by split directories. */
2294 free_split_directories (dirs)
2299 while (dirs[i] != NULL)
2302 free ((char *) dirs);
2305 /* Given three strings PROGNAME, BIN_PREFIX, PREFIX, return a string that gets
2306 to PREFIX starting with the directory portion of PROGNAME and a relative
2307 pathname of the difference between BIN_PREFIX and PREFIX.
2309 For example, if BIN_PREFIX is /alpha/beta/gamma/gcc/delta, PREFIX is
2310 /alpha/beta/gamma/omega/, and PROGNAME is /red/green/blue/gcc, then this
2311 function will return /red/green/blue/../omega.
2313 If no relative prefix can be found, return NULL. */
2316 make_relative_prefix (progname, bin_prefix, prefix)
2317 const char *progname;
2318 const char *bin_prefix;
2321 char **prog_dirs, **bin_dirs, **prefix_dirs;
2322 int prog_num, bin_num, prefix_num, std_loc_p;
2325 prog_dirs = split_directories (progname, &prog_num);
2326 bin_dirs = split_directories (bin_prefix, &bin_num);
2328 /* If there is no full pathname, try to find the program by checking in each
2329 of the directories specified in the PATH environment variable. */
2334 GET_ENV_PATH_LIST (temp, "PATH");
2337 char *startp, *endp, *nstore;
2338 size_t prefixlen = strlen (temp) + 1;
2342 nstore = (char *) alloca (prefixlen + strlen (progname) + 1);
2344 startp = endp = temp;
2347 if (*endp == PATH_SEPARATOR || *endp == 0)
2352 nstore[1] = DIR_SEPARATOR;
2357 strncpy (nstore, startp, endp - startp);
2358 if (! IS_DIR_SEPARATOR (endp[-1]))
2360 nstore[endp - startp] = DIR_SEPARATOR;
2361 nstore[endp - startp + 1] = 0;
2364 nstore[endp - startp] = 0;
2366 strcat (nstore, progname);
2367 if (! access (nstore, X_OK)
2368 #ifdef HAVE_HOST_EXECUTABLE_SUFFIX
2369 || ! access (strcat (nstore, HOST_EXECUTABLE_SUFFIX), X_OK)
2373 free_split_directories (prog_dirs);
2375 prog_dirs = split_directories (progname, &prog_num);
2381 endp = startp = endp + 1;
2389 /* Remove the program name from comparison of directory names. */
2392 /* Determine if the compiler is installed in the standard location, and if
2393 so, we don't need to specify relative directories. Also, if argv[0]
2394 doesn't contain any directory specifiers, there is not much we can do. */
2396 if (prog_num == bin_num)
2398 for (i = 0; i < bin_num; i++)
2400 if (strcmp (prog_dirs[i], bin_dirs[i]) != 0)
2404 if (prog_num <= 0 || i == bin_num)
2407 free_split_directories (prog_dirs);
2408 free_split_directories (bin_dirs);
2409 prog_dirs = bin_dirs = (char **) 0;
2414 prefix_dirs = split_directories (prefix, &prefix_num);
2416 /* Find how many directories are in common between bin_prefix & prefix. */
2417 n = (prefix_num < bin_num) ? prefix_num : bin_num;
2418 for (common = 0; common < n; common++)
2420 if (strcmp (bin_dirs[common], prefix_dirs[common]) != 0)
2424 /* If there are no common directories, there can be no relative prefix. */
2427 free_split_directories (prog_dirs);
2428 free_split_directories (bin_dirs);
2429 free_split_directories (prefix_dirs);
2433 /* Build up the pathnames in argv[0]. */
2434 for (i = 0; i < prog_num; i++)
2435 obstack_grow (&obstack, prog_dirs[i], strlen (prog_dirs[i]));
2437 /* Now build up the ..'s. */
2438 for (i = common; i < n; i++)
2440 obstack_grow (&obstack, DIR_UP, sizeof (DIR_UP) - 1);
2441 obstack_1grow (&obstack, DIR_SEPARATOR);
2444 /* Put in directories to move over to prefix. */
2445 for (i = common; i < prefix_num; i++)
2446 obstack_grow (&obstack, prefix_dirs[i], strlen (prefix_dirs[i]));
2448 free_split_directories (prog_dirs);
2449 free_split_directories (bin_dirs);
2450 free_split_directories (prefix_dirs);
2452 obstack_1grow (&obstack, '\0');
2453 return obstack_finish (&obstack);
2457 /* Check whether NAME can be accessed in MODE. This is like access,
2458 except that it never considers directories to be executable. */
2461 access_check (name, mode)
2469 if (stat (name, &st) < 0
2470 || S_ISDIR (st.st_mode))
2474 return access (name, mode);
2477 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2478 access to check permissions.
2479 Return 0 if not found, otherwise return its name, allocated with malloc. */
2482 find_a_file (pprefix, name, mode)
2483 struct path_prefix *pprefix;
2488 const char *const file_suffix =
2489 ((mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "");
2490 struct prefix_list *pl;
2491 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1;
2493 #ifdef DEFAULT_ASSEMBLER
2494 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2495 return xstrdup (DEFAULT_ASSEMBLER);
2498 #ifdef DEFAULT_LINKER
2499 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2500 return xstrdup (DEFAULT_LINKER);
2504 len += strlen (machine_suffix);
2506 temp = xmalloc (len);
2508 /* Determine the filename to execute (special case for absolute paths). */
2510 if (IS_ABSOLUTE_PATHNAME (name))
2512 if (access (name, mode) == 0)
2514 strcpy (temp, name);
2519 for (pl = pprefix->plist; pl; pl = pl->next)
2523 /* Some systems have a suffix for executable files.
2524 So try appending that first. */
2525 if (file_suffix[0] != 0)
2527 strcpy (temp, pl->prefix);
2528 strcat (temp, machine_suffix);
2529 strcat (temp, name);
2530 strcat (temp, file_suffix);
2531 if (access_check (temp, mode) == 0)
2533 if (pl->used_flag_ptr != 0)
2534 *pl->used_flag_ptr = 1;
2539 /* Now try just the name. */
2540 strcpy (temp, pl->prefix);
2541 strcat (temp, machine_suffix);
2542 strcat (temp, name);
2543 if (access_check (temp, mode) == 0)
2545 if (pl->used_flag_ptr != 0)
2546 *pl->used_flag_ptr = 1;
2551 /* Certain prefixes are tried with just the machine type,
2552 not the version. This is used for finding as, ld, etc. */
2553 if (just_machine_suffix && pl->require_machine_suffix == 2)
2555 /* Some systems have a suffix for executable files.
2556 So try appending that first. */
2557 if (file_suffix[0] != 0)
2559 strcpy (temp, pl->prefix);
2560 strcat (temp, just_machine_suffix);
2561 strcat (temp, name);
2562 strcat (temp, file_suffix);
2563 if (access_check (temp, mode) == 0)
2565 if (pl->used_flag_ptr != 0)
2566 *pl->used_flag_ptr = 1;
2571 strcpy (temp, pl->prefix);
2572 strcat (temp, just_machine_suffix);
2573 strcat (temp, name);
2574 if (access_check (temp, mode) == 0)
2576 if (pl->used_flag_ptr != 0)
2577 *pl->used_flag_ptr = 1;
2582 /* Certain prefixes can't be used without the machine suffix
2583 when the machine or version is explicitly specified. */
2584 if (! pl->require_machine_suffix)
2586 /* Some systems have a suffix for executable files.
2587 So try appending that first. */
2588 if (file_suffix[0] != 0)
2590 strcpy (temp, pl->prefix);
2591 strcat (temp, name);
2592 strcat (temp, file_suffix);
2593 if (access_check (temp, mode) == 0)
2595 if (pl->used_flag_ptr != 0)
2596 *pl->used_flag_ptr = 1;
2601 strcpy (temp, pl->prefix);
2602 strcat (temp, name);
2603 if (access_check (temp, mode) == 0)
2605 if (pl->used_flag_ptr != 0)
2606 *pl->used_flag_ptr = 1;
2616 /* Ranking of prefixes in the sort list. -B prefixes are put before
2619 enum path_prefix_priority
2621 PREFIX_PRIORITY_B_OPT,
2622 PREFIX_PRIORITY_LAST
2625 /* Add an entry for PREFIX in PLIST. The PLIST is kept in assending
2626 order according to PRIORITY. Within each PRIORITY, new entries are
2629 If WARN is nonzero, we will warn if no file is found
2630 through this prefix. WARN should point to an int
2631 which will be set to 1 if this entry is used.
2633 COMPONENT is the value to be passed to update_path.
2635 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2636 the complete value of machine_suffix.
2637 2 means try both machine_suffix and just_machine_suffix. */
2640 add_prefix (pprefix, prefix, component, priority, require_machine_suffix, warn)
2641 struct path_prefix *pprefix;
2643 const char *component;
2644 /* enum prefix_priority */ int priority;
2645 int require_machine_suffix;
2648 struct prefix_list *pl, **prev;
2651 for (prev = &pprefix->plist;
2652 (*prev) != NULL && (*prev)->priority <= priority;
2653 prev = &(*prev)->next)
2656 /* Keep track of the longest prefix */
2658 prefix = update_path (prefix, component);
2659 len = strlen (prefix);
2660 if (len > pprefix->max_len)
2661 pprefix->max_len = len;
2663 pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
2664 pl->prefix = prefix;
2665 pl->require_machine_suffix = require_machine_suffix;
2666 pl->used_flag_ptr = warn;
2667 pl->priority = priority;
2671 /* Insert after PREV */
2676 /* Execute the command specified by the arguments on the current line of spec.
2677 When using pipes, this includes several piped-together commands
2678 with `|' between them.
2680 Return 0 if successful, -1 if failed. */
2686 int n_commands; /* # of command. */
2690 const char *prog; /* program name. */
2691 const char **argv; /* vector of args. */
2692 int pid; /* pid of process for this command. */
2695 struct command *commands; /* each command buffer with above info. */
2697 /* Count # of piped commands. */
2698 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2699 if (strcmp (argbuf[i], "|") == 0)
2702 /* Get storage for each command. */
2703 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2705 /* Split argbuf into its separate piped processes,
2706 and record info about each one.
2707 Also search for the programs that are to be run. */
2709 commands[0].prog = argbuf[0]; /* first command. */
2710 commands[0].argv = &argbuf[0];
2711 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK);
2714 commands[0].argv[0] = string;
2716 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2717 if (strcmp (argbuf[i], "|") == 0)
2718 { /* each command. */
2719 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2720 fatal ("-pipe not supported");
2722 argbuf[i] = 0; /* termination of command args. */
2723 commands[n_commands].prog = argbuf[i + 1];
2724 commands[n_commands].argv = &argbuf[i + 1];
2725 string = find_a_file (&exec_prefixes, commands[n_commands].prog, X_OK);
2727 commands[n_commands].argv[0] = string;
2731 argbuf[argbuf_index] = 0;
2733 /* If -v, print what we are about to do, and maybe query. */
2737 /* For help listings, put a blank line between sub-processes. */
2738 if (print_help_list)
2739 fputc ('\n', stderr);
2741 /* Print each piped command as a separate line. */
2742 for (i = 0; i < n_commands; i++)
2744 const char *const *j;
2746 if (verbose_only_flag)
2748 for (j = commands[i].argv; *j; j++)
2751 fprintf (stderr, " \"");
2752 for (p = *j; *p; ++p)
2754 if (*p == '"' || *p == '\\' || *p == '$')
2755 fputc ('\\', stderr);
2758 fputc ('"', stderr);
2762 for (j = commands[i].argv; *j; j++)
2763 fprintf (stderr, " %s", *j);
2765 /* Print a pipe symbol after all but the last command. */
2766 if (i + 1 != n_commands)
2767 fprintf (stderr, " |");
2768 fprintf (stderr, "\n");
2771 if (verbose_only_flag != 0)
2774 notice ("\nGo ahead? (y or n) ");
2778 while (getchar () != '\n')
2781 if (i != 'y' && i != 'Y')
2786 /* Run each piped subprocess. */
2788 for (i = 0; i < n_commands; i++)
2790 char *errmsg_fmt, *errmsg_arg;
2791 const char *string = commands[i].argv[0];
2793 /* For some bizarre reason, the second argument of execvp() is
2794 char *const *, not const char *const *. */
2795 commands[i].pid = pexecute (string, (char *const *) commands[i].argv,
2796 programname, temp_filename,
2797 &errmsg_fmt, &errmsg_arg,
2798 ((i == 0 ? PEXECUTE_FIRST : 0)
2799 | (i + 1 == n_commands ? PEXECUTE_LAST : 0)
2800 | (string == commands[i].prog
2801 ? PEXECUTE_SEARCH : 0)
2802 | (verbose_flag ? PEXECUTE_VERBOSE : 0)));
2804 if (commands[i].pid == -1)
2805 pfatal_pexecute (errmsg_fmt, errmsg_arg);
2807 if (string != commands[i].prog)
2808 free ((PTR) string);
2813 /* Wait for all the subprocesses to finish.
2814 We don't care what order they finish in;
2815 we know that N_COMMANDS waits will get them all.
2816 Ignore subprocesses that we don't know about,
2817 since they can be spawned by the process that exec'ed us. */
2821 #ifdef HAVE_GETRUSAGE
2823 double ut = 0.0, st = 0.0;
2826 for (i = 0; i < n_commands;)
2832 pid = pwait (commands[i].pid, &status, 0);
2836 #ifdef HAVE_GETRUSAGE
2839 /* getrusage returns the total resource usage of all children
2840 up to now. Copy the previous values into prus, get the
2841 current statistics, then take the difference. */
2844 getrusage (RUSAGE_CHILDREN, &rus);
2845 d.tv_sec = rus.ru_utime.tv_sec - prus.ru_utime.tv_sec;
2846 d.tv_usec = rus.ru_utime.tv_usec - prus.ru_utime.tv_usec;
2847 ut = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2849 d.tv_sec = rus.ru_stime.tv_sec - prus.ru_stime.tv_sec;
2850 d.tv_usec = rus.ru_stime.tv_usec - prus.ru_stime.tv_usec;
2851 st = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2855 for (j = 0; j < n_commands; j++)
2856 if (commands[j].pid == pid)
2859 if (WIFSIGNALED (status))
2862 /* SIGPIPE is a special case. It happens in -pipe mode
2863 when the compiler dies before the preprocessor is
2864 done, or the assembler dies before the compiler is
2865 done. There's generally been an error already, and
2866 this is just fallout. So don't generate another error
2867 unless we would otherwise have succeeded. */
2868 if (WTERMSIG (status) == SIGPIPE
2869 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2874 Internal error: %s (program %s)\n\
2875 Please submit a full bug report.\n\
2876 See %s for instructions.",
2877 strsignal (WTERMSIG (status)), commands[j].prog,
2882 else if (WIFEXITED (status)
2883 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2885 if (WEXITSTATUS (status) > greatest_status)
2886 greatest_status = WEXITSTATUS (status);
2889 #ifdef HAVE_GETRUSAGE
2890 if (report_times && ut + st != 0)
2891 notice ("# %s %.2f %.2f\n", commands[j].prog, ut, st);
2900 /* Find all the switches given to us
2901 and make a vector describing them.
2902 The elements of the vector are strings, one per switch given.
2903 If a switch uses following arguments, then the `part1' field
2904 is the switch itself and the `args' field
2905 is a null-terminated vector containing the following arguments.
2906 The `live_cond' field is:
2908 1 if the switch is true in a conditional spec,
2909 -1 if false (overridden by a later switch)
2910 -2 if this switch should be ignored (used in %{<S})
2911 The `validated' field is nonzero if any spec has looked at this switch;
2912 if it remains zero at the end of the run, it must be meaningless. */
2915 #define SWITCH_FALSE -1
2916 #define SWITCH_IGNORE -2
2917 #define SWITCH_LIVE 1
2924 unsigned char validated;
2925 unsigned char ordering;
2928 static struct switchstr *switches;
2930 static int n_switches;
2935 const char *language;
2938 /* Also a vector of input files specified. */
2940 static struct infile *infiles;
2944 /* This counts the number of libraries added by lang_specific_driver, so that
2945 we can tell if there were any user supplied any files or libraries. */
2947 static int added_libraries;
2949 /* And a vector of corresponding output files is made up later. */
2951 const char **outfiles;
2953 /* Used to track if none of the -B paths are used. */
2956 /* Used to track if standard path isn't used and -b or -V is specified. */
2957 static int warn_std;
2959 /* Gives value to pass as "warn" to add_prefix for standard prefixes. */
2960 static int *warn_std_ptr = 0;
2962 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2964 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2965 is true if we should look for an executable suffix. DO_OBJ
2966 is true if we should look for an object suffix. */
2969 convert_filename (name, do_exe, do_obj)
2971 int do_exe ATTRIBUTE_UNUSED;
2972 int do_obj ATTRIBUTE_UNUSED;
2974 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2982 len = strlen (name);
2984 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2985 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2986 if (do_obj && len > 2
2987 && name[len - 2] == '.'
2988 && name[len - 1] == 'o')
2990 obstack_grow (&obstack, name, len - 2);
2991 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2992 name = obstack_finish (&obstack);
2996 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2997 /* If there is no filetype, make it the executable suffix (which includes
2998 the "."). But don't get confused if we have just "-o". */
2999 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
3002 for (i = len - 1; i >= 0; i--)
3003 if (IS_DIR_SEPARATOR (name[i]))
3006 for (i++; i < len; i++)
3010 obstack_grow (&obstack, name, len);
3011 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
3012 strlen (TARGET_EXECUTABLE_SUFFIX));
3013 name = obstack_finish (&obstack);
3020 /* Display the command line switches accepted by gcc. */
3024 printf (_("Usage: %s [options] file...\n"), programname);
3025 fputs (_("Options:\n"), stdout);
3027 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
3028 fputs (_(" --help Display this information\n"), stdout);
3029 fputs (_(" --target-help Display target specific command line options\n"), stdout);
3031 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
3032 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
3033 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
3034 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
3035 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
3036 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
3037 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
3038 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
3039 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
3041 -print-multi-lib Display the mapping between command line options and\n\
3042 multiple library search directories\n"), stdout);
3043 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3044 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3045 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3046 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3047 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3048 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3049 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3050 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3051 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3052 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3053 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
3054 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
3055 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3056 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3057 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3058 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3059 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3060 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3062 -x <language> Specify the language of the following input files\n\
3063 Permissable languages include: c c++ assembler none\n\
3064 'none' means revert to the default behavior of\n\
3065 guessing the language based on the file's extension\n\
3069 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3070 passed on to the various sub-processes invoked by %s. In order to pass\n\
3071 other options on to these processes the -W<letter> options must be used.\n\
3074 /* The rest of the options are displayed by invocations of the various
3079 add_preprocessor_option (option, len)
3083 n_preprocessor_options++;
3085 if (! preprocessor_options)
3086 preprocessor_options
3087 = (char **) xmalloc (n_preprocessor_options * sizeof (char *));
3089 preprocessor_options
3090 = (char **) xrealloc (preprocessor_options,
3091 n_preprocessor_options * sizeof (char *));
3093 preprocessor_options [n_preprocessor_options - 1] =
3094 save_string (option, len);
3098 add_assembler_option (option, len)
3102 n_assembler_options++;
3104 if (! assembler_options)
3106 = (char **) xmalloc (n_assembler_options * sizeof (char *));
3109 = (char **) xrealloc (assembler_options,
3110 n_assembler_options * sizeof (char *));
3112 assembler_options [n_assembler_options - 1] = save_string (option, len);
3116 add_linker_option (option, len)
3122 if (! linker_options)
3124 = (char **) xmalloc (n_linker_options * sizeof (char *));
3127 = (char **) xrealloc (linker_options,
3128 n_linker_options * sizeof (char *));
3130 linker_options [n_linker_options - 1] = save_string (option, len);
3133 /* Create the vector `switches' and its contents.
3134 Store its length in `n_switches'. */
3137 process_command (argc, argv)
3139 const char *const *argv;
3144 const char *spec_lang = 0;
3145 int last_language_n_infiles;
3148 int lang_n_infiles = 0;
3149 #ifdef MODIFY_TARGET_NAME
3150 int is_modify_target_name;
3154 GET_ENV_PATH_LIST (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3158 added_libraries = 0;
3160 /* Figure compiler version from version string. */
3162 compiler_version = temp1 = xstrdup (version_string);
3164 for (; *temp1; ++temp1)
3173 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3174 see if we can create it from the pathname specified in argv[0]. */
3177 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3178 if (!gcc_exec_prefix)
3180 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
3181 standard_exec_prefix);
3182 if (gcc_exec_prefix)
3183 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3187 if (gcc_exec_prefix)
3189 int len = strlen (gcc_exec_prefix);
3191 if (len > (int) sizeof ("/lib/gcc-lib/") - 1
3192 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3194 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc-lib/") + 1;
3195 if (IS_DIR_SEPARATOR (*temp)
3196 && strncmp (temp + 1, "lib", 3) == 0
3197 && IS_DIR_SEPARATOR (temp[4])
3198 && strncmp (temp + 5, "gcc-lib", 7) == 0)
3199 len -= sizeof ("/lib/gcc-lib/") - 1;
3202 set_std_prefix (gcc_exec_prefix, len);
3203 add_prefix (&exec_prefixes, gcc_exec_prefix, "GCC",
3204 PREFIX_PRIORITY_LAST, 0, NULL);
3205 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3206 PREFIX_PRIORITY_LAST, 0, NULL);
3209 /* COMPILER_PATH and LIBRARY_PATH have values
3210 that are lists of directory names with colons. */
3212 GET_ENV_PATH_LIST (temp, "COMPILER_PATH");
3215 const char *startp, *endp;
3216 char *nstore = (char *) alloca (strlen (temp) + 3);
3218 startp = endp = temp;
3221 if (*endp == PATH_SEPARATOR || *endp == 0)
3223 strncpy (nstore, startp, endp - startp);
3225 strcpy (nstore, concat (".", dir_separator_str, NULL));
3226 else if (!IS_DIR_SEPARATOR (endp[-1]))
3228 nstore[endp - startp] = DIR_SEPARATOR;
3229 nstore[endp - startp + 1] = 0;
3232 nstore[endp - startp] = 0;
3233 add_prefix (&exec_prefixes, nstore, 0,
3234 PREFIX_PRIORITY_LAST, 0, NULL);
3235 add_prefix (&include_prefixes,
3236 concat (nstore, "include", NULL),
3237 0, PREFIX_PRIORITY_LAST, 0, NULL);
3240 endp = startp = endp + 1;
3247 GET_ENV_PATH_LIST (temp, LIBRARY_PATH_ENV);
3248 if (temp && *cross_compile == '0')
3250 const char *startp, *endp;
3251 char *nstore = (char *) alloca (strlen (temp) + 3);
3253 startp = endp = temp;
3256 if (*endp == PATH_SEPARATOR || *endp == 0)
3258 strncpy (nstore, startp, endp - startp);
3260 strcpy (nstore, concat (".", dir_separator_str, NULL));
3261 else if (!IS_DIR_SEPARATOR (endp[-1]))
3263 nstore[endp - startp] = DIR_SEPARATOR;
3264 nstore[endp - startp + 1] = 0;
3267 nstore[endp - startp] = 0;
3268 add_prefix (&startfile_prefixes, nstore, NULL,
3269 PREFIX_PRIORITY_LAST, 0, NULL);
3272 endp = startp = endp + 1;
3279 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3280 GET_ENV_PATH_LIST (temp, "LPATH");
3281 if (temp && *cross_compile == '0')
3283 const char *startp, *endp;
3284 char *nstore = (char *) alloca (strlen (temp) + 3);
3286 startp = endp = temp;
3289 if (*endp == PATH_SEPARATOR || *endp == 0)
3291 strncpy (nstore, startp, endp - startp);
3293 strcpy (nstore, concat (".", dir_separator_str, NULL));
3294 else if (!IS_DIR_SEPARATOR (endp[-1]))
3296 nstore[endp - startp] = DIR_SEPARATOR;
3297 nstore[endp - startp + 1] = 0;
3300 nstore[endp - startp] = 0;
3301 add_prefix (&startfile_prefixes, nstore, NULL,
3302 PREFIX_PRIORITY_LAST, 0, NULL);
3305 endp = startp = endp + 1;
3312 /* Convert new-style -- options to old-style. */
3313 translate_options (&argc, &argv);
3315 /* Do language-specific adjustment/addition of flags. */
3316 lang_specific_driver (&argc, &argv, &added_libraries);
3318 /* Scan argv twice. Here, the first time, just count how many switches
3319 there will be in their vector, and how many input files in theirs.
3320 Also parse any switches that determine the configuration name, such as -b.
3321 Here we also parse the switches that cc itself uses (e.g. -v). */
3323 for (i = 1; i < argc; i++)
3325 if (! strcmp (argv[i], "-dumpspecs"))
3327 struct spec_list *sl;
3329 for (sl = specs; sl; sl = sl->next)
3330 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3331 if (link_command_spec)
3332 printf ("*link_command:\n%s\n\n", link_command_spec);
3335 else if (! strcmp (argv[i], "-dumpversion"))
3337 printf ("%s\n", spec_version);
3340 else if (! strcmp (argv[i], "-dumpmachine"))
3342 printf ("%s\n", spec_machine);
3345 else if (strcmp (argv[i], "-fversion") == 0)
3347 /* translate_options () has turned --version into -fversion. */
3348 printf (_("%s (GCC) %s\n"), programname, version_string);
3349 fputs (_("Copyright (C) 2002 Free Software Foundation, Inc.\n"),
3351 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
3352 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
3356 else if (strcmp (argv[i], "-fhelp") == 0)
3358 /* translate_options () has turned --help into -fhelp. */
3359 print_help_list = 1;
3361 /* We will be passing a dummy file on to the sub-processes. */
3365 /* CPP driver cannot obtain switch from cc1_options. */
3367 add_preprocessor_option ("--help", 6);
3368 add_assembler_option ("--help", 6);
3369 add_linker_option ("--help", 6);
3371 else if (strcmp (argv[i], "-ftarget-help") == 0)
3373 /* translate_options() has turned --target-help into -ftarget-help. */
3374 target_help_flag = 1;
3376 /* We will be passing a dummy file on to the sub-processes. */
3380 /* CPP driver cannot obtain switch from cc1_options. */
3382 add_preprocessor_option ("--target-help", 13);
3383 add_assembler_option ("--target-help", 13);
3384 add_linker_option ("--target-help", 13);
3386 else if (! strcmp (argv[i], "-pass-exit-codes"))
3388 pass_exit_codes = 1;
3391 else if (! strcmp (argv[i], "-print-search-dirs"))
3392 print_search_dirs = 1;
3393 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3394 print_file_name = "libgcc.a";
3395 else if (! strncmp (argv[i], "-print-file-name=", 17))
3396 print_file_name = argv[i] + 17;
3397 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3398 print_prog_name = argv[i] + 17;
3399 else if (! strcmp (argv[i], "-print-multi-lib"))
3400 print_multi_lib = 1;
3401 else if (! strcmp (argv[i], "-print-multi-directory"))
3402 print_multi_directory = 1;
3403 else if (! strncmp (argv[i], "-Wa,", 4))
3406 /* Pass the rest of this option to the assembler. */
3408 /* Split the argument at commas. */
3410 for (j = 4; argv[i][j]; j++)
3411 if (argv[i][j] == ',')
3413 add_assembler_option (argv[i] + prev, j - prev);
3417 /* Record the part after the last comma. */
3418 add_assembler_option (argv[i] + prev, j - prev);
3420 else if (! strncmp (argv[i], "-Wp,", 4))
3423 /* Pass the rest of this option to the preprocessor. */
3425 /* Split the argument at commas. */
3427 for (j = 4; argv[i][j]; j++)
3428 if (argv[i][j] == ',')
3430 add_preprocessor_option (argv[i] + prev, j - prev);
3434 /* Record the part after the last comma. */
3435 add_preprocessor_option (argv[i] + prev, j - prev);
3437 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3438 /* The +e options to the C++ front-end. */
3440 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3443 /* Split the argument at commas. */
3444 for (j = 3; argv[i][j]; j++)
3445 n_infiles += (argv[i][j] == ',');
3447 else if (strcmp (argv[i], "-Xlinker") == 0)
3450 fatal ("argument to `-Xlinker' is missing");
3455 else if (strcmp (argv[i], "-l") == 0)
3458 fatal ("argument to `-l' is missing");
3463 else if (strncmp (argv[i], "-l", 2) == 0)
3465 else if (strcmp (argv[i], "-save-temps") == 0)
3467 save_temps_flag = 1;
3470 else if (strcmp (argv[i], "-specs") == 0)
3472 struct user_specs *user = (struct user_specs *)
3473 xmalloc (sizeof (struct user_specs));
3475 fatal ("argument to `-specs' is missing");
3477 user->next = (struct user_specs *) 0;
3478 user->filename = argv[i];
3479 if (user_specs_tail)
3480 user_specs_tail->next = user;
3482 user_specs_head = user;
3483 user_specs_tail = user;
3485 else if (strncmp (argv[i], "-specs=", 7) == 0)
3487 struct user_specs *user = (struct user_specs *)
3488 xmalloc (sizeof (struct user_specs));
3489 if (strlen (argv[i]) == 7)
3490 fatal ("argument to `-specs=' is missing");
3492 user->next = (struct user_specs *) 0;
3493 user->filename = argv[i] + 7;
3494 if (user_specs_tail)
3495 user_specs_tail->next = user;
3497 user_specs_head = user;
3498 user_specs_tail = user;
3500 else if (strcmp (argv[i], "-time") == 0)
3502 else if (strcmp (argv[i], "-###") == 0)
3504 /* This is similar to -v except that there is no execution
3505 of the commands and the echoed arguments are quoted. It
3506 is intended for use in shell scripts to capture the
3507 driver-generated command line. */
3508 verbose_only_flag++;
3511 else if (argv[i][0] == '-' && argv[i][1] != 0)
3513 const char *p = &argv[i][1];
3520 if (p[1] == 0 && i + 1 == argc)
3521 fatal ("argument to `-b' is missing");
3523 spec_machine = argv[++i];
3525 spec_machine = p + 1;
3527 warn_std_ptr = &warn_std;
3535 if (p[1] == 0 && i + 1 == argc)
3536 fatal ("argument to `-B' is missing");
3542 len = strlen (value);
3544 /* Catch the case where the user has forgotten to append a
3545 directory separator to the path. Note, they may be using
3546 -B to add an executable name prefix, eg "i386-elf-", in
3547 order to distinguish between multiple installations of
3548 GCC in the same directory. Hence we must check to see
3549 if appending a directory separator actually makes a
3550 valid directory name. */
3551 if (! IS_DIR_SEPARATOR (value [len - 1])
3552 && is_directory (value, "", 0))
3554 char *tmp = xmalloc (len + 2);
3555 strcpy (tmp, value);
3556 tmp[len] = DIR_SEPARATOR;
3561 /* As a kludge, if the arg is "[foo/]stageN/", just
3562 add "[foo/]include" to the include prefix. */
3565 && (IS_DIR_SEPARATOR (value[len - 8]))))
3566 && strncmp (value + len - 7, "stage", 5) == 0
3567 && ISDIGIT (value[len - 2])
3568 && (IS_DIR_SEPARATOR (value[len - 1])))
3571 add_prefix (&include_prefixes, "include", NULL,
3572 PREFIX_PRIORITY_B_OPT, 0, NULL);
3575 char * string = xmalloc (len + 1);
3577 strncpy (string, value, len - 7);
3578 strcpy (string + len - 7, "include");
3579 add_prefix (&include_prefixes, string, NULL,
3580 PREFIX_PRIORITY_B_OPT, 0, NULL);
3584 add_prefix (&exec_prefixes, value, NULL,
3585 PREFIX_PRIORITY_B_OPT, 0, &warn_B);
3586 add_prefix (&startfile_prefixes, value, NULL,
3587 PREFIX_PRIORITY_B_OPT, 0, &warn_B);
3588 add_prefix (&include_prefixes, concat (value, "include", NULL),
3589 NULL, PREFIX_PRIORITY_B_OPT, 0, NULL);
3594 case 'v': /* Print our subcommands and print versions. */
3596 /* If they do anything other than exactly `-v', don't set
3597 verbose_flag; rather, continue on to give the error. */
3615 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3620 /* Forward scan, just in case -S or -c is specified
3627 if (argv[j][0] == '-')
3629 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
3635 else if ((skip = SWITCH_TAKES_ARG (argv[j][1])))
3636 j += skip - (argv[j][2] != 0);
3637 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1)))
3644 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3646 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0);
3648 argv[i] = convert_filename (argv[i], ! have_c, 0);
3655 #ifdef MODIFY_TARGET_NAME
3656 is_modify_target_name = 0;
3658 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3659 if (! strcmp (argv[i], modify_target[j].sw))
3662 = (char *) xmalloc (strlen (modify_target[j].str)
3663 + strlen (spec_machine));
3666 int made_addition = 0;
3668 is_modify_target_name = 1;
3669 for (p = spec_machine, q = new_name; *p != 0; )
3671 if (modify_target[j].add_del == DELETE
3672 && (! strncmp (q, modify_target[j].str,
3673 strlen (modify_target[j].str))))
3674 p += strlen (modify_target[j].str);
3675 else if (modify_target[j].add_del == ADD
3676 && ! made_addition && *p == '-')
3678 for (r = modify_target[j].str; *r != 0; )
3686 spec_machine = new_name;
3689 if (is_modify_target_name)
3695 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
3696 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
3697 else if (WORD_SWITCH_TAKES_ARG (p))
3698 i += WORD_SWITCH_TAKES_ARG (p);
3708 if (have_c && have_o && lang_n_infiles > 1)
3709 fatal ("cannot specify -o with -c or -S and multiple compilations");
3711 /* Set up the search paths before we go looking for config files. */
3713 /* These come before the md prefixes so that we will find gcc's subcommands
3714 (such as cpp) rather than those of the host system. */
3715 /* Use 2 as fourth arg meaning try just the machine as a suffix,
3716 as well as trying the machine and the version. */
3718 add_prefix (&exec_prefixes, standard_exec_prefix, "GCC",
3719 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3720 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3721 PREFIX_PRIORITY_LAST, 2, warn_std_ptr);
3722 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS",
3723 PREFIX_PRIORITY_LAST, 2, warn_std_ptr);
3726 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3727 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3728 add_prefix (&startfile_prefixes, standard_exec_prefix_1, "BINUTILS",
3729 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3731 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3732 dir_separator_str, NULL);
3734 /* If tooldir is relative, base it on exec_prefixes. A relative
3735 tooldir lets us move the installed tree as a unit.
3737 If GCC_EXEC_PREFIX is defined, then we want to add two relative
3738 directories, so that we can search both the user specified directory
3739 and the standard place. */
3741 if (!IS_ABSOLUTE_PATHNAME (tooldir_prefix))
3743 if (gcc_exec_prefix)
3745 char *gcc_exec_tooldir_prefix
3746 = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
3747 spec_version, dir_separator_str, tooldir_prefix, NULL);
3749 add_prefix (&exec_prefixes,
3750 concat (gcc_exec_tooldir_prefix, "bin",
3751 dir_separator_str, NULL),
3752 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
3753 add_prefix (&startfile_prefixes,
3754 concat (gcc_exec_tooldir_prefix, "lib",
3755 dir_separator_str, NULL),
3756 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
3759 tooldir_prefix = concat (standard_exec_prefix, spec_machine,
3760 dir_separator_str, spec_version,
3761 dir_separator_str, tooldir_prefix, NULL);
3764 add_prefix (&exec_prefixes,
3765 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3766 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
3767 add_prefix (&startfile_prefixes,
3768 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3769 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
3771 /* More prefixes are enabled in main, after we read the specs file
3772 and determine whether this is cross-compilation or not. */
3774 /* Then create the space for the vectors and scan again. */
3776 switches = ((struct switchstr *)
3777 xmalloc ((n_switches + 1) * sizeof (struct switchstr)));
3778 infiles = (struct infile *) xmalloc ((n_infiles + 1) * sizeof (struct infile));
3781 last_language_n_infiles = -1;
3783 /* This, time, copy the text of each switch and store a pointer
3784 to the copy in the vector of switches.
3785 Store all the infiles in their vector. */
3787 for (i = 1; i < argc; i++)
3789 /* Just skip the switches that were handled by the preceding loop. */
3790 #ifdef MODIFY_TARGET_NAME
3791 is_modify_target_name = 0;
3793 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3794 if (! strcmp (argv[i], modify_target[j].sw))
3795 is_modify_target_name = 1;
3797 if (is_modify_target_name)
3801 if (! strncmp (argv[i], "-Wa,", 4))
3803 else if (! strncmp (argv[i], "-Wp,", 4))
3805 else if (! strcmp (argv[i], "-pass-exit-codes"))
3807 else if (! strcmp (argv[i], "-print-search-dirs"))
3809 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3811 else if (! strncmp (argv[i], "-print-file-name=", 17))
3813 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3815 else if (! strcmp (argv[i], "-print-multi-lib"))
3817 else if (! strcmp (argv[i], "-print-multi-directory"))
3819 else if (! strcmp (argv[i], "-ftarget-help"))
3821 else if (! strcmp (argv[i], "-fhelp"))
3823 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3825 /* Compensate for the +e options to the C++ front-end;
3826 they're there simply for cfront call-compatibility. We do
3827 some magic in default_compilers to pass them down properly.
3828 Note we deliberately start at the `+' here, to avoid passing
3829 -e0 or -e1 down into the linker. */
3830 switches[n_switches].part1 = &argv[i][0];
3831 switches[n_switches].args = 0;
3832 switches[n_switches].live_cond = SWITCH_OK;
3833 switches[n_switches].validated = 0;
3836 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3839 /* Split the argument at commas. */
3841 for (j = 4; argv[i][j]; j++)
3842 if (argv[i][j] == ',')
3844 infiles[n_infiles].language = "*";
3845 infiles[n_infiles++].name
3846 = save_string (argv[i] + prev, j - prev);
3849 /* Record the part after the last comma. */
3850 infiles[n_infiles].language = "*";
3851 infiles[n_infiles++].name = argv[i] + prev;
3853 else if (strcmp (argv[i], "-Xlinker") == 0)
3855 infiles[n_infiles].language = "*";
3856 infiles[n_infiles++].name = argv[++i];
3858 else if (strcmp (argv[i], "-l") == 0)
3859 { /* POSIX allows separation of -l and the lib arg;
3860 canonicalize by concatenating -l with its arg */
3861 infiles[n_infiles].language = "*";
3862 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL);
3864 else if (strncmp (argv[i], "-l", 2) == 0)
3866 infiles[n_infiles].language = "*";
3867 infiles[n_infiles++].name = argv[i];
3869 else if (strcmp (argv[i], "-specs") == 0)
3871 else if (strncmp (argv[i], "-specs=", 7) == 0)
3873 else if (strcmp (argv[i], "-time") == 0)
3875 else if ((save_temps_flag || report_times)
3876 && strcmp (argv[i], "-pipe") == 0)
3878 /* -save-temps overrides -pipe, so that temp files are produced */
3879 if (save_temps_flag)
3880 error ("warning: -pipe ignored because -save-temps specified");
3881 /* -time overrides -pipe because we can't get correct stats when
3882 multiple children are running at once. */
3883 else if (report_times)
3884 error ("warning: -pipe ignored because -time specified");
3886 else if (strcmp (argv[i], "-###") == 0)
3888 else if (argv[i][0] == '-' && argv[i][1] != 0)
3890 const char *p = &argv[i][1];
3895 if (p[1] == 0 && i + 1 == argc)
3896 fatal ("argument to `-x' is missing");
3898 spec_lang = argv[++i];
3901 if (! strcmp (spec_lang, "none"))
3902 /* Suppress the warning if -xnone comes after the last input
3903 file, because alternate command interfaces like g++ might
3904 find it useful to place -xnone after each input file. */
3907 last_language_n_infiles = n_infiles;
3910 switches[n_switches].part1 = p;
3911 /* Deal with option arguments in separate argv elements. */
3912 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
3913 || WORD_SWITCH_TAKES_ARG (p))
3916 int n_args = WORD_SWITCH_TAKES_ARG (p);
3920 /* Count only the option arguments in separate argv elements. */
3921 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
3923 if (i + n_args >= argc)
3924 fatal ("argument to `-%s' is missing", p);
3925 switches[n_switches].args
3926 = (const char **) xmalloc ((n_args + 1) * sizeof(const char *));
3928 switches[n_switches].args[j++] = argv[++i];
3929 /* Null-terminate the vector. */
3930 switches[n_switches].args[j] = 0;
3932 else if (strchr (switches_need_spaces, c))
3934 /* On some systems, ld cannot handle some options without
3935 a space. So split the option from its argument. */
3936 char *part1 = (char *) xmalloc (2);
3940 switches[n_switches].part1 = part1;
3941 switches[n_switches].args
3942 = (const char **) xmalloc (2 * sizeof (const char *));
3943 switches[n_switches].args[0] = xstrdup (p+1);
3944 switches[n_switches].args[1] = 0;
3947 switches[n_switches].args = 0;
3949 switches[n_switches].live_cond = SWITCH_OK;
3950 switches[n_switches].validated = 0;
3951 switches[n_switches].ordering = 0;
3952 /* These are always valid, since gcc.c itself understands it. */
3953 if (!strcmp (p, "save-temps")
3954 || !strcmp (p, "static-libgcc")
3955 || !strcmp (p, "shared-libgcc"))
3956 switches[n_switches].validated = 1;
3959 char ch = switches[n_switches].part1[0];
3960 if (ch == 'b' || ch == 'B')
3961 switches[n_switches].validated = 1;
3967 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3968 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
3971 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
3973 perror_with_name (argv[i]);
3978 infiles[n_infiles].language = spec_lang;
3979 infiles[n_infiles++].name = argv[i];
3984 if (n_infiles == last_language_n_infiles && spec_lang != 0)
3985 error ("warning: `-x %s' after last input file has no effect", spec_lang);
3987 /* Ensure we only invoke each subprocess once. */
3988 if (target_help_flag || print_help_list)
3992 /* Create a dummy input file, so that we can pass --target-help on to
3993 the various sub-processes. */
3994 infiles[0].language = "c";
3995 infiles[0].name = "help-dummy";
3997 if (target_help_flag)
3999 switches[n_switches].part1 = "--target-help";
4000 switches[n_switches].args = 0;
4001 switches[n_switches].live_cond = SWITCH_OK;
4002 switches[n_switches].validated = 0;
4007 if (print_help_list)
4009 switches[n_switches].part1 = "--help";
4010 switches[n_switches].args = 0;
4011 switches[n_switches].live_cond = SWITCH_OK;
4012 switches[n_switches].validated = 0;
4018 switches[n_switches].part1 = 0;
4019 infiles[n_infiles].name = 0;
4022 /* Store switches not filtered out by %{<S} in spec in COLLECT_GCC_OPTIONS
4023 and place that in the environment. */
4026 set_collect_gcc_options ()
4031 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4033 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4034 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4037 for (i = 0; (int) i < n_switches; i++)
4039 const char *const *args;
4042 obstack_grow (&collect_obstack, " ", 1);
4046 /* Ignore elided switches. */
4047 if (switches[i].live_cond == SWITCH_IGNORE)
4050 obstack_grow (&collect_obstack, "'-", 2);
4051 q = switches[i].part1;
4052 while ((p = strchr (q, '\'')))
4054 obstack_grow (&collect_obstack, q, p - q);
4055 obstack_grow (&collect_obstack, "'\\''", 4);
4058 obstack_grow (&collect_obstack, q, strlen (q));
4059 obstack_grow (&collect_obstack, "'", 1);
4061 for (args = switches[i].args; args && *args; args++)
4063 obstack_grow (&collect_obstack, " '", 2);
4065 while ((p = strchr (q, '\'')))
4067 obstack_grow (&collect_obstack, q, p - q);
4068 obstack_grow (&collect_obstack, "'\\''", 4);
4071 obstack_grow (&collect_obstack, q, strlen (q));
4072 obstack_grow (&collect_obstack, "'", 1);
4075 obstack_grow (&collect_obstack, "\0", 1);
4076 putenv (obstack_finish (&collect_obstack));
4079 /* Process a spec string, accumulating and running commands. */
4081 /* These variables describe the input file name.
4082 input_file_number is the index on outfiles of this file,
4083 so that the output file name can be stored for later use by %o.
4084 input_basename is the start of the part of the input file
4085 sans all directory names, and basename_length is the number
4086 of characters starting there excluding the suffix .c or whatever. */
4088 const char *input_filename;
4089 static int input_file_number;
4090 size_t input_filename_length;
4091 static int basename_length;
4092 static int suffixed_basename_length;
4093 static const char *input_basename;
4094 static const char *input_suffix;
4095 static struct stat input_stat;
4096 static int input_stat_set;
4098 /* The compiler used to process the current input file. */
4099 static struct compiler *input_file_compiler;
4101 /* These are variables used within do_spec and do_spec_1. */
4103 /* Nonzero if an arg has been started and not yet terminated
4104 (with space, tab or newline). */
4105 static int arg_going;
4107 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4108 is a temporary file name. */
4109 static int delete_this_arg;
4111 /* Nonzero means %w has been seen; the next arg to be terminated
4112 is the output file name of this compilation. */
4113 static int this_is_output_file;
4115 /* Nonzero means %s has been seen; the next arg to be terminated
4116 is the name of a library file and we should try the standard
4117 search dirs for it. */
4118 static int this_is_library_file;
4120 /* Nonzero means that the input of this command is coming from a pipe. */
4121 static int input_from_pipe;
4123 /* Nonnull means substitute this for any suffix when outputting a switches
4125 static const char *suffix_subst;
4127 /* Process the spec SPEC and run the commands specified therein.
4128 Returns 0 if the spec is successfully processed; -1 if failed. */
4138 delete_this_arg = 0;
4139 this_is_output_file = 0;
4140 this_is_library_file = 0;
4141 input_from_pipe = 0;
4142 suffix_subst = NULL;
4144 value = do_spec_1 (spec, 0, NULL);
4146 /* Force out any unfinished command.
4147 If -pipe, this forces out the last command if it ended in `|'. */
4150 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4153 set_collect_gcc_options ();
4155 if (argbuf_index > 0)
4162 /* Process the sub-spec SPEC as a portion of a larger spec.
4163 This is like processing a whole spec except that we do
4164 not initialize at the beginning and we do not supply a
4165 newline by default at the end.
4166 INSWITCH nonzero means don't process %-sequences in SPEC;
4167 in this case, % is treated as an ordinary character.
4168 This is used while substituting switches.
4169 INSWITCH nonzero also causes SPC not to terminate an argument.
4171 Value is zero unless a line was finished
4172 and the command on that line reported an error. */
4175 do_spec_1 (spec, inswitch, soft_matched_part)
4178 const char *soft_matched_part;
4180 const char *p = spec;
4187 /* If substituting a switch, treat all chars like letters.
4188 Otherwise, NL, SPC, TAB and % are special. */
4189 switch (inswitch ? 'a' : c)
4192 /* End of line: finish any pending argument,
4193 then run the pending command if one has been started. */
4196 obstack_1grow (&obstack, 0);
4197 string = obstack_finish (&obstack);
4198 if (this_is_library_file)
4199 string = find_file (string);
4200 store_arg (string, delete_this_arg, this_is_output_file);
4201 if (this_is_output_file)
4202 outfiles[input_file_number] = string;
4206 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4208 for (i = 0; i < n_switches; i++)
4209 if (!strcmp (switches[i].part1, "pipe"))
4212 /* A `|' before the newline means use a pipe here,
4213 but only if -pipe was specified.
4214 Otherwise, execute now and don't pass the `|' as an arg. */
4217 input_from_pipe = 1;
4218 switches[i].validated = 1;
4225 set_collect_gcc_options ();
4227 if (argbuf_index > 0)
4233 /* Reinitialize for a new command, and for a new argument. */
4236 delete_this_arg = 0;
4237 this_is_output_file = 0;
4238 this_is_library_file = 0;
4239 input_from_pipe = 0;
4243 /* End any pending argument. */
4246 obstack_1grow (&obstack, 0);
4247 string = obstack_finish (&obstack);
4248 if (this_is_library_file)
4249 string = find_file (string);
4250 store_arg (string, delete_this_arg, this_is_output_file);
4251 if (this_is_output_file)
4252 outfiles[input_file_number] = string;
4256 obstack_1grow (&obstack, c);
4262 /* Space or tab ends an argument if one is pending. */
4265 obstack_1grow (&obstack, 0);
4266 string = obstack_finish (&obstack);
4267 if (this_is_library_file)
4268 string = find_file (string);
4269 store_arg (string, delete_this_arg, this_is_output_file);
4270 if (this_is_output_file)
4271 outfiles[input_file_number] = string;
4273 /* Reinitialize for a new argument. */
4275 delete_this_arg = 0;
4276 this_is_output_file = 0;
4277 this_is_library_file = 0;
4284 fatal ("invalid specification! Bug in cc");
4287 obstack_grow (&obstack, input_basename, basename_length);
4292 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4297 delete_this_arg = 2;
4300 /* Dump out the directories specified with LIBRARY_PATH,
4301 followed by the absolute directories
4302 that we search for startfiles. */
4305 struct prefix_list *pl = startfile_prefixes.plist;
4306 size_t bufsize = 100;
4307 char *buffer = (char *) xmalloc (bufsize);
4310 for (; pl; pl = pl->next)
4312 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4313 /* Used on systems which record the specified -L dirs
4314 and use them to search for dynamic linking. */
4315 /* Relative directories always come from -B,
4316 and it is better not to use them for searching
4317 at run time. In particular, stage1 loses. */
4318 if (!IS_ABSOLUTE_PATHNAME (pl->prefix))
4321 /* Try subdirectory if there is one. */
4322 if (multilib_dir != NULL)
4326 if (strlen (pl->prefix) + strlen (machine_suffix)
4328 bufsize = (strlen (pl->prefix)
4329 + strlen (machine_suffix)) * 2 + 1;
4330 buffer = (char *) xrealloc (buffer, bufsize);
4331 strcpy (buffer, pl->prefix);
4332 strcat (buffer, machine_suffix);
4333 if (is_directory (buffer, multilib_dir, 1))
4335 do_spec_1 ("-L", 0, NULL);
4336 #ifdef SPACE_AFTER_L_OPTION
4337 do_spec_1 (" ", 0, NULL);
4339 do_spec_1 (buffer, 1, NULL);
4340 do_spec_1 (multilib_dir, 1, NULL);
4341 /* Make this a separate argument. */
4342 do_spec_1 (" ", 0, NULL);
4345 if (!pl->require_machine_suffix)
4347 if (is_directory (pl->prefix, multilib_dir, 1))
4349 do_spec_1 ("-L", 0, NULL);
4350 #ifdef SPACE_AFTER_L_OPTION
4351 do_spec_1 (" ", 0, NULL);
4353 do_spec_1 (pl->prefix, 1, NULL);
4354 do_spec_1 (multilib_dir, 1, NULL);
4355 /* Make this a separate argument. */
4356 do_spec_1 (" ", 0, NULL);
4362 if (is_directory (pl->prefix, machine_suffix, 1))
4364 do_spec_1 ("-L", 0, NULL);
4365 #ifdef SPACE_AFTER_L_OPTION
4366 do_spec_1 (" ", 0, NULL);
4368 do_spec_1 (pl->prefix, 1, NULL);
4369 /* Remove slash from machine_suffix. */
4370 if (strlen (machine_suffix) >= bufsize)
4371 bufsize = strlen (machine_suffix) * 2 + 1;
4372 buffer = (char *) xrealloc (buffer, bufsize);
4373 strcpy (buffer, machine_suffix);
4374 idx = strlen (buffer);
4375 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4376 buffer[idx - 1] = 0;
4377 do_spec_1 (buffer, 1, NULL);
4378 /* Make this a separate argument. */
4379 do_spec_1 (" ", 0, NULL);
4382 if (!pl->require_machine_suffix)
4384 if (is_directory (pl->prefix, "", 1))
4386 do_spec_1 ("-L", 0, NULL);
4387 #ifdef SPACE_AFTER_L_OPTION
4388 do_spec_1 (" ", 0, NULL);
4390 /* Remove slash from pl->prefix. */
4391 if (strlen (pl->prefix) >= bufsize)
4392 bufsize = strlen (pl->prefix) * 2 + 1;
4393 buffer = (char *) xrealloc (buffer, bufsize);
4394 strcpy (buffer, pl->prefix);
4395 idx = strlen (buffer);
4396 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4397 buffer[idx - 1] = 0;
4398 do_spec_1 (buffer, 1, NULL);
4399 /* Make this a separate argument. */
4400 do_spec_1 (" ", 0, NULL);
4409 /* %efoo means report an error with `foo' as error message
4410 and don't execute any more commands for this file. */
4414 while (*p != 0 && *p != '\n')
4416 buf = (char *) alloca (p - q + 1);
4417 strncpy (buf, q, p - q);
4424 /* %nfoo means report an notice with `foo' on stderr. */
4428 while (*p != 0 && *p != '\n')
4430 buf = (char *) alloca (p - q + 1);
4431 strncpy (buf, q, p - q);
4433 notice ("%s\n", buf);
4443 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is defined,
4444 and it is not a directory, and it is writable, use it.
4445 Otherwise, fall through and treat this like any other
4448 if ((!save_temps_flag)
4449 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4450 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4452 obstack_grow (&obstack, HOST_BIT_BUCKET,
4453 strlen (HOST_BIT_BUCKET));
4454 delete_this_arg = 0;
4463 struct temp_name *t;
4465 const char *suffix = p;
4466 char *saved_suffix = NULL;
4468 while (*p == '.' || ISALPHA ((unsigned char) *p))
4470 suffix_length = p - suffix;
4471 if (p[0] == '%' && p[1] == 'O')
4474 /* We don't support extra suffix characters after %O. */
4475 if (*p == '.' || ISALPHA ((unsigned char) *p))
4477 if (suffix_length == 0)
4478 suffix = TARGET_OBJECT_SUFFIX;
4482 = (char *) xmalloc (suffix_length
4483 + strlen (TARGET_OBJECT_SUFFIX));
4484 strncpy (saved_suffix, suffix, suffix_length);
4485 strcpy (saved_suffix + suffix_length,
4486 TARGET_OBJECT_SUFFIX);
4488 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4491 /* If the input_filename has the same suffix specified
4492 for the %g, %u, or %U, and -save-temps is specified,
4493 we could end up using that file as an intermediate
4494 thus clobbering the user's source file (.e.g.,
4495 gcc -save-temps foo.s would clobber foo.s with the
4496 output of cpp0). So check for this condition and
4497 generate a temp file as the intermediate. */
4499 if (save_temps_flag)
4501 temp_filename_length = basename_length + suffix_length;
4502 temp_filename = alloca (temp_filename_length + 1);
4503 strncpy ((char *) temp_filename, input_basename, basename_length);
4504 strncpy ((char *) temp_filename + basename_length, suffix,
4506 *((char *) temp_filename + temp_filename_length) = '\0';
4507 if (strcmp (temp_filename, input_filename) != 0)
4509 struct stat st_temp;
4511 /* Note, set_input() resets input_stat_set to 0. */
4512 if (input_stat_set == 0)
4514 input_stat_set = stat (input_filename, &input_stat);
4515 if (input_stat_set >= 0)
4519 /* If we have the stat for the input_filename
4520 and we can do the stat for the temp_filename
4521 then the they could still refer to the same
4522 file if st_dev/st_ino's are the same. */
4524 if (input_stat_set != 1
4525 || stat (temp_filename, &st_temp) < 0
4526 || input_stat.st_dev != st_temp.st_dev
4527 || input_stat.st_ino != st_temp.st_ino)
4529 temp_filename = save_string (temp_filename,
4530 temp_filename_length + 1);
4531 obstack_grow (&obstack, temp_filename,
4532 temp_filename_length);
4539 /* See if we already have an association of %g/%u/%U and
4541 for (t = temp_names; t; t = t->next)
4542 if (t->length == suffix_length
4543 && strncmp (t->suffix, suffix, suffix_length) == 0
4544 && t->unique == (c != 'g'))
4547 /* Make a new association if needed. %u and %j
4549 if (t == 0 || c == 'u' || c == 'j')
4553 t = (struct temp_name *) xmalloc (sizeof (struct temp_name));
4554 t->next = temp_names;
4557 t->length = suffix_length;
4560 t->suffix = saved_suffix;
4561 saved_suffix = NULL;
4564 t->suffix = save_string (suffix, suffix_length);
4565 t->unique = (c != 'g');
4566 temp_filename = make_temp_file (t->suffix);
4567 temp_filename_length = strlen (temp_filename);
4568 t->filename = temp_filename;
4569 t->filename_length = temp_filename_length;
4573 free (saved_suffix);
4575 obstack_grow (&obstack, t->filename, t->filename_length);
4576 delete_this_arg = 1;
4582 obstack_grow (&obstack, input_filename, input_filename_length);
4588 struct prefix_list *pl = include_prefixes.plist;
4590 if (gcc_exec_prefix)
4592 do_spec_1 ("-iprefix", 1, NULL);
4593 /* Make this a separate argument. */
4594 do_spec_1 (" ", 0, NULL);
4595 do_spec_1 (gcc_exec_prefix, 1, NULL);
4596 do_spec_1 (" ", 0, NULL);
4599 for (; pl; pl = pl->next)
4601 do_spec_1 ("-isystem", 1, NULL);
4602 /* Make this a separate argument. */
4603 do_spec_1 (" ", 0, NULL);
4604 do_spec_1 (pl->prefix, 1, NULL);
4605 do_spec_1 (" ", 0, NULL);
4612 int max = n_infiles;
4613 max += lang_specific_extra_outfiles;
4615 for (i = 0; i < max; i++)
4617 store_arg (outfiles[i], 0, 0);
4622 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4627 this_is_library_file = 1;
4631 this_is_output_file = 1;
4636 int cur_index = argbuf_index;
4637 /* Handle the {...} following the %W. */
4640 p = handle_braces (p + 1);
4643 /* If any args were output, mark the last one for deletion
4645 if (argbuf_index != cur_index)
4646 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
4650 /* %x{OPTION} records OPTION for %X to output. */
4656 /* Skip past the option value and make a copy. */
4661 string = save_string (p1 + 1, p - p1 - 2);
4663 /* See if we already recorded this option. */
4664 for (i = 0; i < n_linker_options; i++)
4665 if (! strcmp (string, linker_options[i]))
4671 /* This option is new; add it. */
4672 add_linker_option (string, strlen (string));
4676 /* Dump out the options accumulated previously using %x. */
4678 for (i = 0; i < n_linker_options; i++)
4680 do_spec_1 (linker_options[i], 1, NULL);
4681 /* Make each accumulated option a separate argument. */
4682 do_spec_1 (" ", 0, NULL);
4686 /* Dump out the options accumulated previously using -Wa,. */
4688 for (i = 0; i < n_assembler_options; i++)
4690 do_spec_1 (assembler_options[i], 1, NULL);
4691 /* Make each accumulated option a separate argument. */
4692 do_spec_1 (" ", 0, NULL);
4696 /* Dump out the options accumulated previously using -Wp,. */
4698 for (i = 0; i < n_preprocessor_options; i++)
4700 do_spec_1 (preprocessor_options[i], 1, NULL);
4701 /* Make each accumulated option a separate argument. */
4702 do_spec_1 (" ", 0, NULL);
4706 /* Here are digits and numbers that just process
4707 a certain constant string as a spec. */
4710 value = do_spec_1 (cc1_spec, 0, NULL);
4716 value = do_spec_1 (cc1plus_spec, 0, NULL);
4722 value = do_spec_1 (asm_spec, 0, NULL);
4728 value = do_spec_1 (asm_final_spec, 0, NULL);
4735 const char *const spec
4736 = (input_file_compiler->cpp_spec
4737 ? input_file_compiler->cpp_spec
4739 value = do_spec_1 (spec, 0, NULL);
4746 value = do_spec_1 (endfile_spec, 0, NULL);
4752 value = do_spec_1 (link_spec, 0, NULL);
4758 value = do_spec_1 (lib_spec, 0, NULL);
4764 value = do_spec_1 (libgcc_spec, 0, NULL);
4770 if (multilib_dir && strcmp (multilib_dir, ".") != 0)
4776 len = strlen (multilib_dir);
4777 obstack_blank (&obstack, len + 1);
4778 p = obstack_next_free (&obstack) - (len + 1);
4781 for (q = multilib_dir; *q ; ++q, ++p)
4782 *p = (IS_DIR_SEPARATOR (*q) ? '_' : *q);
4788 char *x = (char *) alloca (strlen (cpp_predefines) + 1);
4792 /* Copy all of the -D options in CPP_PREDEFINES into BUF. */
4796 if (! strncmp (y, "-D", 2))
4797 /* Copy the whole option. */
4798 while (*y && *y != ' ' && *y != '\t')
4800 else if (*y == ' ' || *y == '\t')
4801 /* Copy whitespace to the result. */
4803 /* Don't copy other options. */
4810 value = do_spec_1 (buf, 0, NULL);
4818 char *x = (char *) alloca (strlen (cpp_predefines) * 4 + 1);
4822 /* Copy all of CPP_PREDEFINES into BUF,
4823 but force them all into the reserved name space if they
4824 aren't already there. The reserved name space is all
4825 identifiers beginning with two underscores or with one
4826 underscore and a capital letter. We do the forcing by
4827 adding up to two underscores to the beginning and end
4828 of each symbol. e.g. mips, _mips, mips_, and _mips_ all
4833 if (! strncmp (y, "-D", 2))
4842 && ! ISUPPER ((unsigned char) *(y + 1))))
4844 /* Stick __ at front of macro name. */
4848 /* Arrange to stick __ at the end as well. */
4852 /* Copy the macro name. */
4853 while (*y && *y != '=' && *y != ' ' && *y != '\t')
4866 /* Copy the value given, if any. */
4867 while (*y && *y != ' ' && *y != '\t')
4870 else if (*y == ' ' || *y == '\t')
4871 /* Copy whitespace to the result. */
4873 /* Don't copy -A options */
4879 /* Copy all of CPP_PREDEFINES into BUF,
4880 but put __ after every -D. */
4884 if (! strncmp (y, "-D", 2))
4890 && ! ISUPPER ((unsigned char) *(y + 1))))
4892 /* Stick -D__ at front of macro name. */
4899 /* Copy the macro name. */
4900 while (*y && *y != '=' && *y != ' ' && *y != '\t')
4903 /* Copy the value given, if any. */
4904 while (*y && *y != ' ' && *y != '\t')
4909 /* Do not copy this macro - we have just done it before */
4910 while (*y && *y != ' ' && *y != '\t')
4914 else if (*y == ' ' || *y == '\t')
4915 /* Copy whitespace to the result. */
4917 /* Don't copy -A options. */
4923 /* Copy all of the -A options in CPP_PREDEFINES into BUF. */
4927 if (! strncmp (y, "-A", 2))
4928 /* Copy the whole option. */
4929 while (*y && *y != ' ' && *y != '\t')
4931 else if (*y == ' ' || *y == '\t')
4932 /* Copy whitespace to the result. */
4934 /* Don't copy other options. */
4941 value = do_spec_1 (buf, 0, NULL);
4948 value = do_spec_1 (startfile_spec, 0, NULL);
4953 /* Here we define characters other than letters and digits. */
4956 p = handle_braces (p);
4962 obstack_1grow (&obstack, '%');
4969 while (p[len] && p[len] != ' ' && p[len] != '%')
4971 suffix_subst = save_string (p - 1, len + 1);
4977 if (soft_matched_part)
4979 do_spec_1 (soft_matched_part, 1, NULL);
4980 do_spec_1 (" ", 0, NULL);
4983 /* Catch the case where a spec string contains something like
4984 '%{foo:%*}'. ie there is no * in the pattern on the left
4985 hand side of the :. */
4986 error ("spec failure: '%%*' has not been initialized by pattern match");
4989 /* Process a string found as the value of a spec given by name.
4990 This feature allows individual machine descriptions
4991 to add and use their own specs.
4992 %[...] modifies -D options the way %P does;
4993 %(...) uses the spec unmodified. */
4995 error ("warning: use of obsolete %%[ operator in specs");
4998 const char *name = p;
4999 struct spec_list *sl;
5002 /* The string after the S/P is the name of a spec that is to be
5004 while (*p && *p != ')' && *p != ']')
5007 /* See if it's in the list. */
5008 for (len = p - name, sl = specs; sl; sl = sl->next)
5009 if (sl->name_len == len && !strncmp (sl->name, name, len))
5011 name = *(sl->ptr_spec);
5013 notice ("Processing spec %c%s%c, which is '%s'\n",
5014 c, sl->name, (c == '(') ? ')' : ']', name);
5023 value = do_spec_1 (name, 0, NULL);
5029 char *x = (char *) alloca (strlen (name) * 2 + 1);
5031 const char *y = name;
5034 /* Copy all of NAME into BUF, but put __ after
5035 every -D and at the end of each arg. */
5038 if (! strncmp (y, "-D", 2))
5049 && (*y == ' ' || *y == '\t' || *y == '='
5050 || *y == '}' || *y == 0))
5063 value = do_spec_1 (buf, 0, NULL);
5069 /* Discard the closing paren or bracket. */
5077 int c1 = *p++; /* Select first or second version number. */
5078 const char *v = compiler_version;
5080 static const char zeroc = '0';
5082 /* The format of the version string is
5083 ([^0-9]*-)?[0-9]+[.][0-9]+([.][0-9]+)?([- ].*)? */
5085 /* Ignore leading non-digits. i.e. "foo-" in "foo-2.7.2". */
5086 while (! ISDIGIT (*v))
5088 if (v > compiler_version && v[-1] != '-')
5091 /* If desired, advance to second version number. */
5094 /* Set V after the first period. */
5095 while (ISDIGIT (*v))
5102 /* If desired, advance to third version number.
5103 But don't complain if it's not present */
5106 /* Set V after the second period. */
5107 while (ISDIGIT (*v))
5109 if ((*v != 0) && (*v != ' ') && (*v != '.') && (*v != '-'))
5115 /* Set Q at the next period or at the end. */
5117 while (ISDIGIT (*q))
5119 if (*q != 0 && q > v && *q != ' ' && *q != '.' && *q != '-')
5123 /* Put that part into the command. */
5124 obstack_grow (&obstack, v, q - v);
5126 /* Default to "0" */
5127 obstack_grow (&obstack, &zeroc, 1);
5133 if (input_from_pipe)
5134 do_spec_1 ("-", 0, NULL);
5138 error ("spec failure: unrecognized spec option '%c'", c);
5144 /* Backslash: treat next character as ordinary. */
5149 /* Ordinary character: put it into the current argument. */
5150 obstack_1grow (&obstack, c);
5154 /* End of string. */
5158 /* Return 0 if we call do_spec_1 and that returns -1. */
5164 const char *filter, *body = NULL, *endbody = NULL;
5166 int true_once = 0; /* If, in %{a|b:d}, at least one of a,b was seen. */
5169 int include_blanks = 1;
5170 int elide_switch = 0;
5175 /* A '^' after the open-brace means to not give blanks before args. */
5182 /* A `|' after the open-brace means,
5183 if the test fails, output a single minus sign rather than nothing.
5184 This is used in %{|!pipe:...}. */
5191 /* A `<' after the open-brace means that the switch should be
5192 removed from the command-line. */
5198 negate = suffix = 0;
5201 /* A `!' after the open-brace negates the condition:
5202 succeed if the specified switch is not present. */
5206 /* A `.' after the open-brace means test against the current suffix. */
5215 if (elide_switch && (negate || pipe_p || suffix))
5217 /* It doesn't make sense to mix elision with other flags. We
5218 could fatal() here, but the standard seems to be to abort. */
5224 while (*p != ':' && *p != '}' && *p != '|' && *p != '&')
5227 if (*p == '|' && (pipe_p || ordered))
5232 if (*p != '}' && *p != '&')
5248 fatal ("mismatched braces in specs");
5254 body = p, endbody = p + 1;
5259 int found = (input_suffix != 0
5260 && (long) strlen (input_suffix) == (long) (p - filter)
5261 && strncmp (input_suffix, filter, p - filter) == 0);
5267 && do_spec_1 (save_string (body, endbody-body-1), 0, NULL) < 0)
5270 else if (p[-1] == '*' && (p[0] == '}' || p[0] == '&'))
5272 /* Substitute all matching switches as separate args. */
5275 for (i = 0; i < n_switches; i++)
5276 if (!strncmp (switches[i].part1, filter, p - 1 - filter)
5277 && check_live_switch (i, p - 1 - filter))
5281 switches[i].live_cond = SWITCH_IGNORE;
5282 switches[i].validated = 1;
5285 ordered = 1, switches[i].ordering = 1;
5290 /* Test for presence of the specified switch. */
5294 /* If name specified ends in *, as in {x*:...},
5295 check for %* and handle that case. */
5296 if (p[-1] == '*' && !negate)
5299 const char *r = body;
5301 /* First see whether we have %*. */
5305 if (*r == '%' && r[1] == '*')
5309 /* If we do, handle that case. */
5312 /* Substitute all matching switches as separate args.
5313 But do this by substituting for %*
5314 in the text that follows the colon. */
5316 unsigned hard_match_len = p - filter - 1;
5317 char *string = save_string (body, endbody - body - 1);
5319 for (i = 0; i < n_switches; i++)
5320 if (!strncmp (switches[i].part1, filter, hard_match_len)
5321 && check_live_switch (i, -1))
5323 do_spec_1 (string, 0, &switches[i].part1[hard_match_len]);
5324 /* Pass any arguments this switch has. */
5325 give_switch (i, 1, 1);
5326 suffix_subst = NULL;
5329 /* We didn't match. Try again. */
5336 /* If name specified ends in *, as in {x*:...},
5337 check for presence of any switch name starting with x. */
5340 for (i = 0; i < n_switches; i++)
5342 unsigned hard_match_len = p - filter - 1;
5344 if (!strncmp (switches[i].part1, filter, hard_match_len)
5345 && check_live_switch (i, hard_match_len))
5352 /* Otherwise, check for presence of exact name specified. */
5355 for (i = 0; i < n_switches; i++)
5357 if (!strncmp (switches[i].part1, filter, p - filter)
5358 && switches[i].part1[p - filter] == 0
5359 && check_live_switch (i, -1))
5367 /* If it is as desired (present for %{s...}, absent for %{!s...})
5368 then substitute either the switch or the specified
5369 conditional text. */
5370 if (present != negate)
5374 switches[i].live_cond = SWITCH_IGNORE;
5375 switches[i].validated = 1;
5377 else if (ordered || *p == '&')
5378 ordered = 1, switches[i].ordering = 1;
5380 give_switch (i, 0, include_blanks);
5382 /* Even if many alternatives are matched, only output once. */
5387 /* Here if a %{|...} conditional fails: output a minus sign,
5388 which means "standard output" or "standard input". */
5389 do_spec_1 ("-", 0, NULL);
5394 /* We didn't match; try again. */
5401 goto next_ampersand;
5407 /* Doing this set of switches later preserves their command-line
5408 ordering. This is needed for e.g. -U, -D and -A. */
5409 for (i = 0; i < n_switches; i++)
5410 if (switches[i].ordering == 1)
5412 switches[i].ordering = 0;
5413 give_switch (i, 0, include_blanks);
5416 /* Process the spec just once, regardless of match count. */
5419 if (do_spec_1 (save_string (body, endbody - body - 1),
5427 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5428 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5429 spec, or -1 if either exact match or %* is used.
5431 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5432 whose value does not begin with "no-" is obsoleted by the same value
5433 with the "no-", similarly for a switch with the "no-" prefix. */
5436 check_live_switch (switchnum, prefix_length)
5440 const char *name = switches[switchnum].part1;
5443 /* In the common case of {<at-most-one-letter>*}, a negating
5444 switch would always match, so ignore that case. We will just
5445 send the conflicting switches to the compiler phase. */
5446 if (prefix_length >= 0 && prefix_length <= 1)
5449 /* If we already processed this switch and determined if it was
5450 live or not, return our past determination. */
5451 if (switches[switchnum].live_cond != 0)
5452 return switches[switchnum].live_cond > 0;
5454 /* Now search for duplicate in a manner that depends on the name. */
5458 for (i = switchnum + 1; i < n_switches; i++)
5459 if (switches[i].part1[0] == 'O')
5461 switches[switchnum].validated = 1;
5462 switches[switchnum].live_cond = SWITCH_FALSE;
5467 case 'W': case 'f': case 'm':
5468 if (! strncmp (name + 1, "no-", 3))
5470 /* We have Xno-YYY, search for XYYY. */
5471 for (i = switchnum + 1; i < n_switches; i++)
5472 if (switches[i].part1[0] == name[0]
5473 && ! strcmp (&switches[i].part1[1], &name[4]))
5475 switches[switchnum].validated = 1;
5476 switches[switchnum].live_cond = SWITCH_FALSE;
5482 /* We have XYYY, search for Xno-YYY. */
5483 for (i = switchnum + 1; i < n_switches; i++)
5484 if (switches[i].part1[0] == name[0]
5485 && switches[i].part1[1] == 'n'
5486 && switches[i].part1[2] == 'o'
5487 && switches[i].part1[3] == '-'
5488 && !strcmp (&switches[i].part1[4], &name[1]))
5490 switches[switchnum].validated = 1;
5491 switches[switchnum].live_cond = SWITCH_FALSE;
5498 /* Otherwise the switch is live. */
5499 switches[switchnum].live_cond = SWITCH_LIVE;
5503 /* Pass a switch to the current accumulating command
5504 in the same form that we received it.
5505 SWITCHNUM identifies the switch; it is an index into
5506 the vector of switches gcc received, which is `switches'.
5507 This cannot fail since it never finishes a command line.
5509 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument.
5511 If INCLUDE_BLANKS is nonzero, then we include blanks before each argument
5515 give_switch (switchnum, omit_first_word, include_blanks)
5517 int omit_first_word;
5520 if (switches[switchnum].live_cond == SWITCH_IGNORE)
5523 if (!omit_first_word)
5525 do_spec_1 ("-", 0, NULL);
5526 do_spec_1 (switches[switchnum].part1, 1, NULL);
5529 if (switches[switchnum].args != 0)
5532 for (p = switches[switchnum].args; *p; p++)
5534 const char *arg = *p;
5537 do_spec_1 (" ", 0, NULL);
5540 unsigned length = strlen (arg);
5543 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5544 if (arg[length] == '.')
5546 ((char *)arg)[length] = 0;
5550 do_spec_1 (arg, 1, NULL);
5552 ((char *)arg)[length] = '.';
5553 do_spec_1 (suffix_subst, 1, NULL);
5556 do_spec_1 (arg, 1, NULL);
5560 do_spec_1 (" ", 0, NULL);
5561 switches[switchnum].validated = 1;
5564 /* Search for a file named NAME trying various prefixes including the
5565 user's -B prefix and some standard ones.
5566 Return the absolute file name found. If nothing is found, return NAME. */
5574 /* Try multilib_dir if it is defined. */
5575 if (multilib_dir != NULL)
5577 const char *const try = ACONCAT ((multilib_dir, dir_separator_str, name, NULL));
5579 newname = find_a_file (&startfile_prefixes, try, R_OK);
5581 /* If we don't find it in the multi library dir, then fall
5582 through and look for it in the normal places. */
5583 if (newname != NULL)
5587 newname = find_a_file (&startfile_prefixes, name, R_OK);
5588 return newname ? newname : name;
5591 /* Determine whether a directory exists. If LINKER, return 0 for
5592 certain fixed names not needed by the linker. If not LINKER, it is
5593 only important to return 0 if the host machine has a small ARG_MAX
5597 is_directory (path1, path2, linker)
5602 int len1 = strlen (path1);
5603 int len2 = strlen (path2);
5604 char *path = (char *) alloca (3 + len1 + len2);
5608 #ifndef SMALL_ARG_MAX
5613 /* Construct the path from the two parts. Ensure the string ends with "/.".
5614 The resulting path will be a directory even if the given path is a
5616 memcpy (path, path1, len1);
5617 memcpy (path + len1, path2, len2);
5618 cp = path + len1 + len2;
5619 if (!IS_DIR_SEPARATOR (cp[-1]))
5620 *cp++ = DIR_SEPARATOR;
5624 /* Exclude directories that the linker is known to search. */
5627 && strcmp (path, concat (dir_separator_str, "lib",
5628 dir_separator_str, ".", NULL)) == 0)
5630 && strcmp (path, concat (dir_separator_str, "usr",
5631 dir_separator_str, "lib",
5632 dir_separator_str, ".", NULL)) == 0)))
5635 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5638 /* Set up the various global variables to indicate that we're processing
5639 the input file named FILENAME. */
5642 set_input (filename)
5643 const char *filename;
5647 input_filename = filename;
5648 input_filename_length = strlen (input_filename);
5650 input_basename = input_filename;
5651 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
5652 /* Skip drive name so 'x:foo' is handled properly. */
5653 if (input_basename[1] == ':')
5654 input_basename += 2;
5656 for (p = input_basename; *p; p++)
5657 if (IS_DIR_SEPARATOR (*p))
5658 input_basename = p + 1;
5660 /* Find a suffix starting with the last period,
5661 and set basename_length to exclude that suffix. */
5662 basename_length = strlen (input_basename);
5663 suffixed_basename_length = basename_length;
5664 p = input_basename + basename_length;
5665 while (p != input_basename && *p != '.')
5667 if (*p == '.' && p != input_basename)
5669 basename_length = p - input_basename;
5670 input_suffix = p + 1;
5675 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5676 we will need to do a stat on the input_filename. The
5677 INPUT_STAT_SET signals that the stat is needed. */
5681 /* On fatal signals, delete all the temporary files. */
5684 fatal_error (signum)
5687 signal (signum, SIG_DFL);
5688 delete_failure_queue ();
5689 delete_temp_files ();
5690 /* Get the same signal again, this time not handled,
5691 so its normal effect occurs. */
5692 kill (getpid (), signum);
5695 extern int main PARAMS ((int, const char *const *));
5700 const char *const *argv;
5704 int linker_was_run = 0;
5705 char *explicit_link_files;
5708 struct user_specs *uptr;
5710 p = argv[0] + strlen (argv[0]);
5711 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
5715 xmalloc_set_program_name (programname);
5717 #ifdef GCC_DRIVER_HOST_INITIALIZATION
5718 /* Perform host dependent initialization when needed. */
5719 GCC_DRIVER_HOST_INITIALIZATION;
5722 gcc_init_libintl ();
5724 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
5725 signal (SIGINT, fatal_error);
5727 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
5728 signal (SIGHUP, fatal_error);
5730 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
5731 signal (SIGTERM, fatal_error);
5733 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
5734 signal (SIGPIPE, fatal_error);
5737 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
5738 receive the signal. A different setting is inheritable */
5739 signal (SIGCHLD, SIG_DFL);
5743 argbuf = (const char **) xmalloc (argbuf_length * sizeof (const char *));
5745 obstack_init (&obstack);
5747 /* Build multilib_select, et. al from the separate lines that make up each
5748 multilib selection. */
5750 const char *const *q = multilib_raw;
5753 obstack_init (&multilib_obstack);
5754 while ((p = *q++) != (char *) 0)
5755 obstack_grow (&multilib_obstack, p, strlen (p));
5757 obstack_1grow (&multilib_obstack, 0);
5758 multilib_select = obstack_finish (&multilib_obstack);
5760 q = multilib_matches_raw;
5761 while ((p = *q++) != (char *) 0)
5762 obstack_grow (&multilib_obstack, p, strlen (p));
5764 obstack_1grow (&multilib_obstack, 0);
5765 multilib_matches = obstack_finish (&multilib_obstack);
5767 q = multilib_exclusions_raw;
5768 while ((p = *q++) != (char *) 0)
5769 obstack_grow (&multilib_obstack, p, strlen (p));
5771 obstack_1grow (&multilib_obstack, 0);
5772 multilib_exclusions = obstack_finish (&multilib_obstack);
5775 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
5778 obstack_1grow (&multilib_obstack, ' ');
5779 obstack_grow (&multilib_obstack,
5780 multilib_defaults_raw[i],
5781 strlen (multilib_defaults_raw[i]));
5785 obstack_1grow (&multilib_obstack, 0);
5786 multilib_defaults = obstack_finish (&multilib_obstack);
5789 /* Set up to remember the pathname of gcc and any options
5790 needed for collect. We use argv[0] instead of programname because
5791 we need the complete pathname. */
5792 obstack_init (&collect_obstack);
5793 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
5794 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
5795 putenv (obstack_finish (&collect_obstack));
5797 #ifdef INIT_ENVIRONMENT
5798 /* Set up any other necessary machine specific environment variables. */
5799 putenv (INIT_ENVIRONMENT);
5802 /* Make a table of what switches there are (switches, n_switches).
5803 Make a table of specified input files (infiles, n_infiles).
5804 Decode switches that are handled locally. */
5806 process_command (argc, argv);
5808 /* Initialize the vector of specs to just the default.
5809 This means one element containing 0s, as a terminator. */
5811 compilers = (struct compiler *) xmalloc (sizeof default_compilers);
5812 memcpy ((char *) compilers, (char *) default_compilers,
5813 sizeof default_compilers);
5814 n_compilers = n_default_compilers;
5816 /* Read specs from a file if there is one. */
5818 machine_suffix = concat (spec_machine, dir_separator_str,
5819 spec_version, dir_separator_str, NULL);
5820 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
5822 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK);
5823 /* Read the specs file unless it is a default one. */
5824 if (specs_file != 0 && strcmp (specs_file, "specs"))
5825 read_specs (specs_file, TRUE);
5829 /* We need to check standard_exec_prefix/just_machine_suffix/specs
5830 for any override of as, ld and libraries. */
5831 specs_file = (char *) alloca (strlen (standard_exec_prefix)
5832 + strlen (just_machine_suffix)
5833 + sizeof ("specs"));
5835 strcpy (specs_file, standard_exec_prefix);
5836 strcat (specs_file, just_machine_suffix);
5837 strcat (specs_file, "specs");
5838 if (access (specs_file, R_OK) == 0)
5839 read_specs (specs_file, TRUE);
5841 /* If not cross-compiling, look for startfiles in the standard places. */
5842 if (*cross_compile == '0')
5844 if (*md_exec_prefix)
5846 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
5847 PREFIX_PRIORITY_LAST, 0, NULL);
5848 add_prefix (&startfile_prefixes, md_exec_prefix, "GCC",
5849 PREFIX_PRIORITY_LAST, 0, NULL);
5852 if (*md_startfile_prefix)
5853 add_prefix (&startfile_prefixes, md_startfile_prefix, "GCC",
5854 PREFIX_PRIORITY_LAST, 0, NULL);
5856 if (*md_startfile_prefix_1)
5857 add_prefix (&startfile_prefixes, md_startfile_prefix_1, "GCC",
5858 PREFIX_PRIORITY_LAST, 0, NULL);
5860 /* If standard_startfile_prefix is relative, base it on
5861 standard_exec_prefix. This lets us move the installed tree
5862 as a unit. If GCC_EXEC_PREFIX is defined, base
5863 standard_startfile_prefix on that as well. */
5864 if (IS_ABSOLUTE_PATHNAME (standard_startfile_prefix))
5865 add_prefix (&startfile_prefixes, standard_startfile_prefix, "BINUTILS",
5866 PREFIX_PRIORITY_LAST, 0, NULL);
5869 if (gcc_exec_prefix)
5870 add_prefix (&startfile_prefixes,
5871 concat (gcc_exec_prefix, machine_suffix,
5872 standard_startfile_prefix, NULL),
5873 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
5874 add_prefix (&startfile_prefixes,
5875 concat (standard_exec_prefix,
5877 standard_startfile_prefix, NULL),
5878 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
5881 add_prefix (&startfile_prefixes, standard_startfile_prefix_1,
5882 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
5883 add_prefix (&startfile_prefixes, standard_startfile_prefix_2,
5884 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
5885 #if 0 /* Can cause surprises, and one can use -B./ instead. */
5886 add_prefix (&startfile_prefixes, "./", NULL,
5887 PREFIX_PRIORITY_LAST, 1, NULL);
5892 if (!IS_ABSOLUTE_PATHNAME (standard_startfile_prefix)
5894 add_prefix (&startfile_prefixes,
5895 concat (gcc_exec_prefix, machine_suffix,
5896 standard_startfile_prefix, NULL),
5897 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
5900 /* Process any user specified specs in the order given on the command
5902 for (uptr = user_specs_head; uptr; uptr = uptr->next)
5904 char *filename = find_a_file (&startfile_prefixes, uptr->filename, R_OK);
5905 read_specs (filename ? filename : uptr->filename, FALSE);
5908 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
5909 if (gcc_exec_prefix)
5910 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
5911 spec_version, dir_separator_str, NULL);
5913 /* Now we have the specs.
5914 Set the `valid' bits for switches that match anything in any spec. */
5916 validate_all_switches ();
5918 /* Now that we have the switches and the specs, set
5919 the subdirectory based on the options. */
5920 set_multilib_dir ();
5922 /* Warn about any switches that no pass was interested in. */
5924 for (i = 0; (int) i < n_switches; i++)
5925 if (! switches[i].validated)
5926 error ("unrecognized option `-%s'", switches[i].part1);
5928 /* Obey some of the options. */
5930 if (print_search_dirs)
5932 printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix);
5933 printf (_("programs: %s\n"), build_search_list (&exec_prefixes, "", 0));
5934 printf (_("libraries: %s\n"), build_search_list (&startfile_prefixes, "", 0));
5938 if (print_file_name)
5940 printf ("%s\n", find_file (print_file_name));
5944 if (print_prog_name)
5946 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK);
5947 printf ("%s\n", (newname ? newname : print_prog_name));
5951 if (print_multi_lib)
5953 print_multilib_info ();
5957 if (print_multi_directory)
5959 if (multilib_dir == NULL)
5962 printf ("%s\n", multilib_dir);
5966 if (target_help_flag)
5968 /* Print if any target specific options. */
5970 /* We do not exit here. Instead we have created a fake input file
5971 called 'target-dummy' which needs to be compiled, and we pass this
5972 on to the various sub-processes, along with the --target-help
5976 if (print_help_list)
5982 printf (_("\nFor bug reporting instructions, please see:\n"));
5983 printf ("%s.\n", GCCBUGURL);
5988 /* We do not exit here. Instead we have created a fake input file
5989 called 'help-dummy' which needs to be compiled, and we pass this
5990 on the various sub-processes, along with the --help switch. */
5998 notice ("Configured with: %s\n", configuration_arguments);
6000 #ifdef THREAD_MODEL_SPEC
6001 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6002 but there's no point in doing all this processing just to get
6003 thread_model back. */
6004 obstack_init (&obstack);
6005 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6006 obstack_1grow (&obstack, '\0');
6007 thrmod = obstack_finish (&obstack);
6009 thrmod = thread_model;
6012 notice ("Thread model: %s\n", thrmod);
6014 /* compiler_version is truncated at the first space when initialized
6015 from version string, so truncate version_string at the first space
6016 before comparing. */
6017 for (n = 0; version_string[n]; n++)
6018 if (version_string[n] == ' ')
6021 if (! strncmp (version_string, compiler_version, n)
6022 && compiler_version[n] == 0)
6023 notice ("gcc version %s\n", version_string);
6025 notice ("gcc driver version %s executing gcc version %s\n",
6026 version_string, compiler_version);
6032 if (n_infiles == added_libraries)
6033 fatal ("no input files");
6035 /* Make a place to record the compiler output file names
6036 that correspond to the input files. */
6039 i += lang_specific_extra_outfiles;
6040 outfiles = (const char **) xcalloc (i, sizeof (char *));
6042 /* Record which files were specified explicitly as link input. */
6044 explicit_link_files = xcalloc (1, n_infiles);
6046 for (i = 0; (int) i < n_infiles; i++)
6048 int this_file_error = 0;
6050 /* Tell do_spec what to substitute for %i. */
6052 input_file_number = i;
6053 set_input (infiles[i].name);
6055 /* Use the same thing in %o, unless cp->spec says otherwise. */
6057 outfiles[i] = input_filename;
6059 /* Figure out which compiler from the file's suffix. */
6062 = lookup_compiler (infiles[i].name, input_filename_length,
6063 infiles[i].language);
6065 if (input_file_compiler)
6067 /* Ok, we found an applicable compiler. Run its spec. */
6069 if (input_file_compiler->spec[0] == '#')
6071 error ("%s: %s compiler not installed on this system",
6072 input_filename, &input_file_compiler->spec[1]);
6073 this_file_error = 1;
6077 value = do_spec (input_file_compiler->spec);
6079 this_file_error = 1;
6083 /* If this file's name does not contain a recognized suffix,
6084 record it as explicit linker input. */
6087 explicit_link_files[i] = 1;
6089 /* Clear the delete-on-failure queue, deleting the files in it
6090 if this compilation failed. */
6092 if (this_file_error)
6094 delete_failure_queue ();
6097 /* If this compilation succeeded, don't delete those files later. */
6098 clear_failure_queue ();
6101 /* Reset the output file name to the first input file name, for use
6102 with %b in LINK_SPEC on a target that prefers not to emit a.out
6105 set_input (infiles[0].name);
6107 if (error_count == 0)
6109 /* Make sure INPUT_FILE_NUMBER points to first available open
6111 input_file_number = n_infiles;
6112 if (lang_specific_pre_link ())
6116 /* Run ld to link all the compiler output files. */
6118 if (error_count == 0)
6120 int tmp = execution_count;
6122 /* We'll use ld if we can't find collect2. */
6123 if (! strcmp (linker_name_spec, "collect2"))
6125 char *s = find_a_file (&exec_prefixes, "collect2", X_OK);
6127 linker_name_spec = "ld";
6129 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6131 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH");
6132 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV);
6134 value = do_spec (link_command_spec);
6137 linker_was_run = (tmp != execution_count);
6140 /* If options said don't run linker,
6141 complain about input files to be given to the linker. */
6143 if (! linker_was_run && error_count == 0)
6144 for (i = 0; (int) i < n_infiles; i++)
6145 if (explicit_link_files[i])
6146 error ("%s: linker input file unused because linking not done",
6149 /* Delete some or all of the temporary files we made. */
6152 delete_failure_queue ();
6153 delete_temp_files ();
6155 if (print_help_list)
6157 printf (("\nFor bug reporting instructions, please see:\n"));
6158 printf ("%s\n", GCCBUGURL);
6161 return (signal_count != 0 ? 2
6162 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
6166 /* Find the proper compilation spec for the file name NAME,
6167 whose length is LENGTH. LANGUAGE is the specified language,
6168 or 0 if this file is to be passed to the linker. */
6170 static struct compiler *
6171 lookup_compiler (name, length, language)
6174 const char *language;
6176 struct compiler *cp;
6178 /* If this was specified by the user to be a linker input, indicate that. */
6179 if (language != 0 && language[0] == '*')
6182 /* Otherwise, look for the language, if one is spec'd. */
6185 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6186 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6189 error ("language %s not recognized", language);
6193 /* Look for a suffix. */
6194 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6196 if (/* The suffix `-' matches only the file name `-'. */
6197 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6198 || (strlen (cp->suffix) < length
6199 /* See if the suffix matches the end of NAME. */
6200 && !strcmp (cp->suffix,
6201 name + length - strlen (cp->suffix))
6206 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6207 /* look again, but case-insensitively this time. */
6209 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6211 if (/* The suffix `-' matches only the file name `-'. */
6212 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6213 || (strlen (cp->suffix) < length
6214 /* See if the suffix matches the end of NAME. */
6215 && ((!strcmp (cp->suffix,
6216 name + length - strlen (cp->suffix))
6217 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6218 && !strcasecmp (cp->suffix,
6219 name + length - strlen (cp->suffix)))
6225 if (cp >= compilers)
6227 if (cp->spec[0] != '@')
6228 /* A non-alias entry: return it. */
6231 /* An alias entry maps a suffix to a language.
6232 Search for the language; pass 0 for NAME and LENGTH
6233 to avoid infinite recursion if language not found. */
6234 return lookup_compiler (NULL, 0, cp->spec + 1);
6240 save_string (s, len)
6244 char *result = xmalloc (len + 1);
6246 memcpy (result, s, len);
6252 pfatal_with_name (name)
6255 perror_with_name (name);
6256 delete_temp_files ();
6261 perror_with_name (name)
6264 error ("%s: %s", name, xstrerror (errno));
6268 pfatal_pexecute (errmsg_fmt, errmsg_arg)
6269 const char *errmsg_fmt;
6270 const char *errmsg_arg;
6274 int save_errno = errno;
6276 /* Space for trailing '\0' is in %s. */
6277 char *msg = xmalloc (strlen (errmsg_fmt) + strlen (errmsg_arg));
6278 sprintf (msg, errmsg_fmt, errmsg_arg);
6284 pfatal_with_name (errmsg_fmt);
6287 /* Output an error message and exit */
6292 fatal ("internal gcc abort");
6295 /* Output an error message and exit */
6298 fatal VPARAMS ((const char *msgid, ...))
6300 VA_OPEN (ap, msgid);
6301 VA_FIXEDARG (ap, const char *, msgid);
6303 fprintf (stderr, "%s: ", programname);
6304 vfprintf (stderr, _(msgid), ap);
6306 fprintf (stderr, "\n");
6307 delete_temp_files ();
6312 error VPARAMS ((const char *msgid, ...))
6314 VA_OPEN (ap, msgid);
6315 VA_FIXEDARG (ap, const char *, msgid);
6317 fprintf (stderr, "%s: ", programname);
6318 vfprintf (stderr, _(msgid), ap);
6321 fprintf (stderr, "\n");
6325 notice VPARAMS ((const char *msgid, ...))
6327 VA_OPEN (ap, msgid);
6328 VA_FIXEDARG (ap, const char *, msgid);
6330 vfprintf (stderr, _(msgid), ap);
6335 validate_all_switches ()
6337 struct compiler *comp;
6340 struct spec_list *spec;
6342 for (comp = compilers; comp->spec; comp++)
6346 if (c == '%' && (*p == '{' || (*p == 'W' && *++p == '{')))
6347 /* We have a switch spec. */
6348 validate_switches (p + 1);
6351 /* Look through the linked list of specs read from the specs file. */
6352 for (spec = specs; spec; spec = spec->next)
6354 p = *(spec->ptr_spec);
6356 if (c == '%' && (*p == '{' || (*p == 'W' && *++p == '{')))
6357 /* We have a switch spec. */
6358 validate_switches (p + 1);
6361 p = link_command_spec;
6363 if (c == '%' && (*p == '{' || (*p == 'W' && *++p == '{')))
6364 /* We have a switch spec. */
6365 validate_switches (p + 1);
6368 /* Look at the switch-name that comes after START
6369 and mark as valid all supplied switches that match it. */
6372 validate_switches (start)
6375 const char *p = start;
6392 while (*p != ':' && *p != '}' && *p != '|' && *p != '&')
6397 else if (p[-1] == '*')
6399 /* Mark all matching switches as valid. */
6400 for (i = 0; i < n_switches; i++)
6401 if (!strncmp (switches[i].part1, filter, p - filter - 1))
6402 switches[i].validated = 1;
6406 /* Mark an exact matching switch as valid. */
6407 for (i = 0; i < n_switches; i++)
6409 if (!strncmp (switches[i].part1, filter, p - filter)
6410 && switches[i].part1[p - filter] == 0)
6411 switches[i].validated = 1;
6415 if (*p++ == '|' || p[-1] == '&')
6419 /* Check whether a particular argument was used. The first time we
6420 canonicalize the switches to keep only the ones we care about. */
6430 const char *replace;
6435 static struct mswitchstr *mswitches;
6436 static int n_mswitches;
6441 struct mswitchstr *matches;
6445 /* Break multilib_matches into the component strings of string
6446 and replacement string. */
6447 for (q = multilib_matches; *q != '\0'; q++)
6452 (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
6454 q = multilib_matches;
6464 matches[i].len = q - matches[i].str;
6466 matches[i].replace = ++q;
6467 while (*q != ';' && *q != '\0')
6473 matches[i].rep_len = q - matches[i].replace;
6479 /* Now build a list of the replacement string for switches that we care
6480 about. Make sure we allocate at least one entry. This prevents
6481 xmalloc from calling fatal, and prevents us from re-executing this
6484 = (struct mswitchstr *) xmalloc ((sizeof (struct mswitchstr))
6485 * (n_switches ? n_switches : 1));
6486 for (i = 0; i < n_switches; i++)
6488 int xlen = strlen (switches[i].part1);
6489 for (j = 0; j < cnt; j++)
6490 if (xlen == matches[j].len
6491 && ! strncmp (switches[i].part1, matches[j].str, xlen))
6493 mswitches[n_mswitches].str = matches[j].replace;
6494 mswitches[n_mswitches].len = matches[j].rep_len;
6495 mswitches[n_mswitches].replace = (char *) 0;
6496 mswitches[n_mswitches].rep_len = 0;
6503 for (i = 0; i < n_mswitches; i++)
6504 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
6511 default_arg (p, len)
6515 const char *start, *end;
6517 for (start = multilib_defaults; *start != '\0'; start = end + 1)
6519 while (*start == ' ' || *start == '\t')
6525 for (end = start + 1; *end != ' ' && *end != '\t' && *end != '\0'; end++)
6528 if ((end - start) == len && strncmp (p, start, len) == 0)
6538 /* Work out the subdirectory to use based on the options. The format of
6539 multilib_select is a list of elements. Each element is a subdirectory
6540 name followed by a list of options followed by a semicolon. The format
6541 of multilib_exclusions is the same, but without the preceding
6542 directory. First gcc will check the exclusions, if none of the options
6543 beginning with an exclamation point are present, and all of the other
6544 options are present, then we will ignore this completely. Passing
6545 that, gcc will consider each multilib_select in turn using the same
6546 rules for matching the options. If a match is found, that subdirectory
6553 unsigned int this_path_len;
6554 const char *this_path, *this_arg;
6558 p = multilib_exclusions;
6561 /* Ignore newlines. */
6568 /* Check the arguments. */
6582 while (*p != ' ' && *p != ';')
6589 if (*this_arg != '!')
6597 ok = used_arg (this_arg, p - this_arg);
6611 p = multilib_select;
6614 /* Ignore newlines. */
6621 /* Get the initial path. */
6629 this_path_len = p - this_path;
6631 /* Check the arguments. */
6646 while (*p != ' ' && *p != ';')
6653 if (*this_arg != '!')
6661 /* If this is a default argument, we can just ignore it.
6662 This is true even if this_arg begins with '!'. Beginning
6663 with '!' does not mean that this argument is necessarily
6664 inappropriate for this library: it merely means that
6665 there is a more specific library which uses this
6666 argument. If this argument is a default, we need not
6667 consider that more specific library. */
6668 if (! default_arg (this_arg, p - this_arg))
6670 ok = used_arg (this_arg, p - this_arg);
6681 if (this_path_len != 1
6682 || this_path[0] != '.')
6684 char *new_multilib_dir = xmalloc (this_path_len + 1);
6685 strncpy (new_multilib_dir, this_path, this_path_len);
6686 new_multilib_dir[this_path_len] = '\0';
6687 multilib_dir = new_multilib_dir;
6696 /* Print out the multiple library subdirectory selection
6697 information. This prints out a series of lines. Each line looks
6698 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
6699 required. Only the desired options are printed out, the negative
6700 matches. The options are print without a leading dash. There are
6701 no spaces to make it easy to use the information in the shell.
6702 Each subdirectory is printed only once. This assumes the ordering
6703 generated by the genmultilib script. Also, we leave out ones that match
6707 print_multilib_info ()
6709 const char *p = multilib_select;
6710 const char *last_path = 0, *this_path;
6712 unsigned int last_path_len = 0;
6717 /* Ignore newlines. */
6724 /* Get the initial path. */
6733 /* Check for matches with the multilib_exclusions. We don't bother
6734 with the '!' in either list. If any of the exclusion rules match
6735 all of its options with the select rule, we skip it. */
6737 const char *e = multilib_exclusions;
6738 const char *this_arg;
6743 /* Ignore newlines. */
6750 /* Check the arguments. */
6767 while (*e != ' ' && *e != ';')
6778 int len = e - this_arg;
6785 while (*q != ' ' && *q != ';')
6792 if (! strncmp (arg, this_arg, (len < q - arg) ? q - arg : len) ||
6793 default_arg (this_arg, e - this_arg))
6823 /* If this is a duplicate, skip it. */
6824 skip = (last_path != 0 && (unsigned int) (p - this_path) == last_path_len
6825 && ! strncmp (last_path, this_path, last_path_len));
6827 last_path = this_path;
6828 last_path_len = p - this_path;
6831 /* If this directory requires any default arguments, we can skip
6832 it. We will already have printed a directory identical to
6833 this one which does not require that default argument. */
6851 while (*q != ' ' && *q != ';')
6859 && default_arg (arg, q - arg))
6874 for (p1 = last_path; p1 < p; p1++)
6893 use_arg = *p != '!';
6898 while (*p != ' ' && *p != ';')
6913 /* If there are extra options, print them now. */
6914 if (multilib_extra && *multilib_extra)
6916 int print_at = TRUE;
6919 for (q = multilib_extra; *q != '\0'; q++)