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 %{Os:-D__OPTIMIZE_SIZE__} %{O*:%{!O0:-D__OPTIMIZE__}}\
686 %{fno-inline|O0|!O*:-D__NO_INLINE__} %{ffast-math:-D__FAST_MATH__}\
687 %{ffreestanding:-D__STDC_HOSTED__=0} %{fno-hosted:-D__STDC_HOSTED__=0}\
688 %{!ffreestanding:%{!fno-hosted:-D__STDC_HOSTED__=1}} %{remap}\
689 %{g3:-dD} %{H} %C %{D*&U*&A*} %{i*} %Z %i\
692 /* This contains cpp options which are common with cc1_options and are passed
693 only when preprocessing only to avoid duplication. */
694 static const char *cpp_options =
695 "%(cpp_unique_options) %{std*} %{d*} %{W*&pedantic*} %{w} %{m*} %{f*}\
698 /* NB: This is shared amongst all front-ends. */
699 static const char *cc1_options =
700 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
701 %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\
702 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*} %{ansi}\
703 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
704 %{Qn:-fno-ident} %{--help:--help}\
705 %{--target-help:--target-help}\
706 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
707 %{fsyntax-only:-o %j} %{-param*}";
709 static const char *asm_options =
710 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
712 static const char *invoke_as =
713 "%{!S:-o %{|!pipe:%g.s} |\n as %(asm_options) %{!pipe:%g.s} %A }";
715 /* Some compilers have limits on line lengths, and the multilib_select
716 and/or multilib_matches strings can be very long, so we build them at
718 static struct obstack multilib_obstack;
719 static const char *multilib_select;
720 static const char *multilib_matches;
721 static const char *multilib_defaults;
722 static const char *multilib_exclusions;
723 #include "multilib.h"
725 /* Check whether a particular argument is a default argument. */
727 #ifndef MULTILIB_DEFAULTS
728 #define MULTILIB_DEFAULTS { "" }
731 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
735 struct user_specs *next;
736 const char *filename;
739 static struct user_specs *user_specs_head, *user_specs_tail;
741 /* This defines which switch letters take arguments. */
743 #define DEFAULT_SWITCH_TAKES_ARG(CHAR) \
744 ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o' \
745 || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u' \
746 || (CHAR) == 'I' || (CHAR) == 'm' || (CHAR) == 'x' \
747 || (CHAR) == 'L' || (CHAR) == 'A' || (CHAR) == 'B' || (CHAR) == 'b')
749 #ifndef SWITCH_TAKES_ARG
750 #define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR)
753 /* This defines which multi-letter switches take arguments. */
755 #define DEFAULT_WORD_SWITCH_TAKES_ARG(STR) \
756 (!strcmp (STR, "Tdata") || !strcmp (STR, "Ttext") \
757 || !strcmp (STR, "Tbss") || !strcmp (STR, "include") \
758 || !strcmp (STR, "imacros") || !strcmp (STR, "aux-info") \
759 || !strcmp (STR, "idirafter") || !strcmp (STR, "iprefix") \
760 || !strcmp (STR, "iwithprefix") || !strcmp (STR, "iwithprefixbefore") \
761 || !strcmp (STR, "isystem") || !strcmp (STR, "-param") \
762 || !strcmp (STR, "specs") \
763 || !strcmp (STR, "MF") || !strcmp (STR, "MT") || !strcmp (STR, "MQ"))
765 #ifndef WORD_SWITCH_TAKES_ARG
766 #define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
769 #ifdef HAVE_TARGET_EXECUTABLE_SUFFIX
770 /* This defines which switches stop a full compilation. */
771 #define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \
772 ((CHAR) == 'c' || (CHAR) == 'S')
774 #ifndef SWITCH_CURTAILS_COMPILATION
775 #define SWITCH_CURTAILS_COMPILATION(CHAR) \
776 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR)
780 /* Record the mapping from file suffixes for compilation specs. */
784 const char *suffix; /* Use this compiler for input files
785 whose names end in this suffix. */
787 const char *spec; /* To use this compiler, run this spec. */
789 const char *cpp_spec; /* If non-NULL, substitute this spec
790 for `%C', rather than the usual
794 /* Pointer to a vector of `struct compiler' that gives the spec for
795 compiling a file, based on its suffix.
796 A file that does not end in any of these suffixes will be passed
797 unchanged to the loader and nothing else will be done to it.
799 An entry containing two 0s is used to terminate the vector.
801 If multiple entries match a file, the last matching one is used. */
803 static struct compiler *compilers;
805 /* Number of entries in `compilers', not counting the null terminator. */
807 static int n_compilers;
809 /* The default list of file name suffixes and their compilation specs. */
811 static const struct compiler default_compilers[] =
813 /* Add lists of suffixes of known languages here. If those languages
814 were not present when we built the driver, we will hit these copies
815 and be given a more meaningful error than "file not used since
816 linking is not done". */
817 {".m", "#Objective-C", 0}, {".mi", "#Objective-C", 0},
818 {".cc", "#C++", 0}, {".cxx", "#C++", 0}, {".cpp", "#C++", 0},
819 {".cp", "#C++", 0}, {".c++", "#C++", 0}, {".C", "#C++", 0},
821 {".ads", "#Ada", 0}, {".adb", "#Ada", 0},
822 {".f", "#Fortran", 0}, {".for", "#Fortran", 0}, {".fpp", "#Fortran", 0},
823 {".F", "#Fortran", 0}, {".FOR", "#Fortran", 0}, {".FPP", "#Fortran", 0},
824 {".r", "#Ratfor", 0},
825 {".p", "#Pascal", 0}, {".pas", "#Pascal", 0},
826 {".java", "#Java", 0}, {".class", "#Java", 0},
827 {".zip", "#Java", 0}, {".jar", "#Java", 0},
828 /* Next come the entries for C. */
831 /* cc1 has an integrated ISO C preprocessor. We should invoke the
832 external preprocessor if -save-temps is given. */
833 "%{E|M|MM:%(trad_capable_cpp) %{ansi:-std=c89} %(cpp_options)}\
835 %{traditional|ftraditional:\
836 %eGNU C no longer supports -traditional without -E}\
837 %{save-temps|traditional-cpp:%(trad_capable_cpp) \
838 %{ansi:-std=c89} %(cpp_options) %b.i \n\
839 cc1 -fpreprocessed %b.i %(cc1_options)}\
840 %{!save-temps:%{!traditional-cpp:\
841 cc1 %{ansi:-std=c89} %(cpp_unique_options) %(cc1_options)}}\
842 %{!fsyntax-only:%(invoke_as)}}}}", 0},
844 "%{!E:%e-E required when input is from standard input}\
845 %(trad_capable_cpp) %{ansi:-std=c89} %(cpp_options)", 0},
846 {".h", "@c-header", 0},
848 "%{!E:%ecompilation of header file requested} \
849 %(trad_capable_cpp) %{ansi:-std=c89} %(cpp_options)", 0},
850 {".i", "@cpp-output", 0},
852 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0},
853 {".s", "@assembler", 0},
855 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0},
856 {".S", "@assembler-with-cpp", 0},
857 {"@assembler-with-cpp",
858 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
859 %{!M:%{!MM:%{!E:%{!S:-o %{|!pipe:%g.s} |\n\
860 as %(asm_debug) %(asm_options) %{!pipe:%g.s} %A }}}}", 0},
862 /* Mark end of table */
866 /* Number of elements in default_compilers, not counting the terminator. */
868 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
870 /* A vector of options to give to the linker.
871 These options are accumulated by %x,
872 and substituted into the linker command with %X. */
873 static int n_linker_options;
874 static char **linker_options;
876 /* A vector of options to give to the assembler.
877 These options are accumulated by -Wa,
878 and substituted into the assembler command with %Y. */
879 static int n_assembler_options;
880 static char **assembler_options;
882 /* A vector of options to give to the preprocessor.
883 These options are accumulated by -Wp,
884 and substituted into the preprocessor command with %Z. */
885 static int n_preprocessor_options;
886 static char **preprocessor_options;
888 /* Define how to map long options into short ones. */
890 /* This structure describes one mapping. */
893 /* The long option's name. */
894 const char *const name;
895 /* The equivalent short option. */
896 const char *const equivalent;
897 /* Argument info. A string of flag chars; NULL equals no options.
898 a => argument required.
899 o => argument optional.
900 j => join argument to equivalent, making one word.
901 * => require other text after NAME as an argument. */
902 const char *const arg_info;
905 /* This is the table of mappings. Mappings are tried sequentially
906 for each option encountered; the first one that matches, wins. */
908 static const struct option_map option_map[] =
910 {"--all-warnings", "-Wall", 0},
911 {"--ansi", "-ansi", 0},
912 {"--assemble", "-S", 0},
913 {"--assert", "-A", "a"},
914 {"--classpath", "-fclasspath=", "aj"},
915 {"--bootclasspath", "-fbootclasspath=", "aj"},
916 {"--CLASSPATH", "-fclasspath=", "aj"},
917 {"--comments", "-C", 0},
918 {"--comments-in-macros", "-CC", 0},
919 {"--compile", "-c", 0},
920 {"--debug", "-g", "oj"},
921 {"--define-macro", "-D", "aj"},
922 {"--dependencies", "-M", 0},
923 {"--dump", "-d", "a"},
924 {"--dumpbase", "-dumpbase", "a"},
925 {"--entry", "-e", 0},
926 {"--extra-warnings", "-W", 0},
927 {"--for-assembler", "-Wa", "a"},
928 {"--for-linker", "-Xlinker", "a"},
929 {"--force-link", "-u", "a"},
930 {"--imacros", "-imacros", "a"},
931 {"--include", "-include", "a"},
932 {"--include-barrier", "-I-", 0},
933 {"--include-directory", "-I", "aj"},
934 {"--include-directory-after", "-idirafter", "a"},
935 {"--include-prefix", "-iprefix", "a"},
936 {"--include-with-prefix", "-iwithprefix", "a"},
937 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
938 {"--include-with-prefix-after", "-iwithprefix", "a"},
939 {"--language", "-x", "a"},
940 {"--library-directory", "-L", "a"},
941 {"--machine", "-m", "aj"},
942 {"--machine-", "-m", "*j"},
943 {"--no-line-commands", "-P", 0},
944 {"--no-precompiled-includes", "-noprecomp", 0},
945 {"--no-standard-includes", "-nostdinc", 0},
946 {"--no-standard-libraries", "-nostdlib", 0},
947 {"--no-warnings", "-w", 0},
948 {"--optimize", "-O", "oj"},
949 {"--output", "-o", "a"},
950 {"--output-class-directory", "-foutput-class-dir=", "ja"},
951 {"--param", "--param", "a"},
952 {"--pedantic", "-pedantic", 0},
953 {"--pedantic-errors", "-pedantic-errors", 0},
954 {"--pipe", "-pipe", 0},
955 {"--prefix", "-B", "a"},
956 {"--preprocess", "-E", 0},
957 {"--print-search-dirs", "-print-search-dirs", 0},
958 {"--print-file-name", "-print-file-name=", "aj"},
959 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
960 {"--print-missing-file-dependencies", "-MG", 0},
961 {"--print-multi-lib", "-print-multi-lib", 0},
962 {"--print-multi-directory", "-print-multi-directory", 0},
963 {"--print-prog-name", "-print-prog-name=", "aj"},
964 {"--profile", "-p", 0},
965 {"--profile-blocks", "-a", 0},
966 {"--quiet", "-q", 0},
967 {"--resource", "-fcompile-resource=", "aj"},
968 {"--save-temps", "-save-temps", 0},
969 {"--shared", "-shared", 0},
970 {"--silent", "-q", 0},
971 {"--specs", "-specs=", "aj"},
972 {"--static", "-static", 0},
973 {"--std", "-std=", "aj"},
974 {"--symbolic", "-symbolic", 0},
975 {"--target", "-b", "a"},
976 {"--time", "-time", 0},
977 {"--trace-includes", "-H", 0},
978 {"--traditional", "-traditional", 0},
979 {"--traditional-cpp", "-traditional-cpp", 0},
980 {"--trigraphs", "-trigraphs", 0},
981 {"--undefine-macro", "-U", "aj"},
982 {"--use-version", "-V", "a"},
983 {"--user-dependencies", "-MM", 0},
984 {"--verbose", "-v", 0},
985 {"--warn-", "-W", "*j"},
986 {"--write-dependencies", "-MD", 0},
987 {"--write-user-dependencies", "-MMD", 0},
992 #ifdef TARGET_OPTION_TRANSLATE_TABLE
993 static const struct {
994 const char *const option_found;
995 const char *const replacements;
996 } target_option_translations[] =
998 TARGET_OPTION_TRANSLATE_TABLE,
1003 /* Translate the options described by *ARGCP and *ARGVP.
1004 Make a new vector and store it back in *ARGVP,
1005 and store its length in *ARGVC. */
1008 translate_options (argcp, argvp)
1010 const char *const **argvp;
1014 const char *const *argv = *argvp;
1015 int newvsize = (argc + 2) * 2 * sizeof (const char *);
1017 (const char **) xmalloc (newvsize);
1021 newv[newindex++] = argv[i++];
1025 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1029 target_option_translations[tott_idx].option_found;
1032 if (strcmp (target_option_translations[tott_idx].option_found,
1039 for (sp = target_option_translations[tott_idx].replacements;
1046 newvsize += spaces * sizeof (const char *);
1047 newv = (const char **) xrealloc (newv, newvsize);
1049 sp = target_option_translations[tott_idx].replacements;
1058 newv[newindex++] = np;
1059 while (*np != ' ' && *np)
1070 if (target_option_translations[tott_idx].option_found)
1074 /* Translate -- options. */
1075 if (argv[i][0] == '-' && argv[i][1] == '-')
1078 /* Find a mapping that applies to this option. */
1079 for (j = 0; j < ARRAY_SIZE (option_map); j++)
1081 size_t optlen = strlen (option_map[j].name);
1082 size_t arglen = strlen (argv[i]);
1083 size_t complen = arglen > optlen ? optlen : arglen;
1084 const char *arginfo = option_map[j].arg_info;
1089 if (!strncmp (argv[i], option_map[j].name, complen))
1091 const char *arg = 0;
1093 if (arglen < optlen)
1096 for (k = j + 1; k < ARRAY_SIZE (option_map); k++)
1097 if (strlen (option_map[k].name) >= arglen
1098 && !strncmp (argv[i], option_map[k].name, arglen))
1100 error ("ambiguous abbreviation %s", argv[i]);
1104 if (k != ARRAY_SIZE (option_map))
1108 if (arglen > optlen)
1110 /* If the option has an argument, accept that. */
1111 if (argv[i][optlen] == '=')
1112 arg = argv[i] + optlen + 1;
1114 /* If this mapping requires extra text at end of name,
1115 accept that as "argument". */
1116 else if (strchr (arginfo, '*') != 0)
1117 arg = argv[i] + optlen;
1119 /* Otherwise, extra text at end means mismatch.
1120 Try other mappings. */
1125 else if (strchr (arginfo, '*') != 0)
1127 error ("incomplete `%s' option", option_map[j].name);
1131 /* Handle arguments. */
1132 if (strchr (arginfo, 'a') != 0)
1138 error ("missing argument to `%s' option",
1139 option_map[j].name);
1146 else if (strchr (arginfo, '*') != 0)
1148 else if (strchr (arginfo, 'o') == 0)
1151 error ("extraneous argument to `%s' option",
1152 option_map[j].name);
1156 /* Store the translation as one argv elt or as two. */
1157 if (arg != 0 && strchr (arginfo, 'j') != 0)
1158 newv[newindex++] = concat (option_map[j].equivalent, arg,
1162 newv[newindex++] = option_map[j].equivalent;
1163 newv[newindex++] = arg;
1166 newv[newindex++] = option_map[j].equivalent;
1174 /* Handle old-fashioned options--just copy them through,
1175 with their arguments. */
1176 else if (argv[i][0] == '-')
1178 const char *p = argv[i] + 1;
1182 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
1183 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
1184 else if (WORD_SWITCH_TAKES_ARG (p))
1185 nskip += WORD_SWITCH_TAKES_ARG (p);
1186 else if ((c == 'B' || c == 'b' || c == 'x')
1189 else if (! strcmp (p, "Xlinker"))
1192 /* Watch out for an option at the end of the command line that
1193 is missing arguments, and avoid skipping past the end of the
1195 if (nskip + i > argc)
1200 newv[newindex++] = argv[i++];
1205 /* Ordinary operands, or +e options. */
1206 newv[newindex++] = argv[i++];
1221 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1222 be considered whitespace. */
1223 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1225 else if (*p == '\n' || *p == ' ' || *p == '\t')
1239 /* Structures to keep track of prefixes to try when looking for files. */
1243 const char *prefix; /* String to prepend to the path. */
1244 struct prefix_list *next; /* Next in linked list. */
1245 int require_machine_suffix; /* Don't use without machine_suffix. */
1246 /* 2 means try both machine_suffix and just_machine_suffix. */
1247 int *used_flag_ptr; /* 1 if a file was found with this prefix. */
1248 int priority; /* Sort key - priority within list */
1253 struct prefix_list *plist; /* List of prefixes to try */
1254 int max_len; /* Max length of a prefix in PLIST */
1255 const char *name; /* Name of this list (used in config stuff) */
1258 /* List of prefixes to try when looking for executables. */
1260 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1262 /* List of prefixes to try when looking for startup (crt0) files. */
1264 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1266 /* List of prefixes to try when looking for include files. */
1268 static struct path_prefix include_prefixes = { 0, 0, "include" };
1270 /* Suffix to attach to directories searched for commands.
1271 This looks like `MACHINE/VERSION/'. */
1273 static const char *machine_suffix = 0;
1275 /* Suffix to attach to directories searched for commands.
1276 This is just `MACHINE/'. */
1278 static const char *just_machine_suffix = 0;
1280 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1282 static const char *gcc_exec_prefix;
1284 /* Default prefixes to attach to command names. */
1286 #ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */
1287 #undef MD_EXEC_PREFIX
1288 #undef MD_STARTFILE_PREFIX
1289 #undef MD_STARTFILE_PREFIX_1
1292 /* If no prefixes defined, use the null string, which will disable them. */
1293 #ifndef MD_EXEC_PREFIX
1294 #define MD_EXEC_PREFIX ""
1296 #ifndef MD_STARTFILE_PREFIX
1297 #define MD_STARTFILE_PREFIX ""
1299 #ifndef MD_STARTFILE_PREFIX_1
1300 #define MD_STARTFILE_PREFIX_1 ""
1303 /* Supply defaults for the standard prefixes. */
1305 #ifndef STANDARD_EXEC_PREFIX
1306 #define STANDARD_EXEC_PREFIX "/usr/local/lib/gcc-lib/"
1308 #ifndef STANDARD_STARTFILE_PREFIX
1309 #define STANDARD_STARTFILE_PREFIX "/usr/local/lib/"
1311 #ifndef TOOLDIR_BASE_PREFIX
1312 #define TOOLDIR_BASE_PREFIX "/usr/local/"
1314 #ifndef STANDARD_BINDIR_PREFIX
1315 #define STANDARD_BINDIR_PREFIX "/usr/local/bin"
1318 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1319 static const char *const standard_exec_prefix_1 = "/usr/lib/gcc/";
1320 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1322 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1323 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1324 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1325 static const char *const standard_startfile_prefix_1 = "/lib/";
1326 static const char *const standard_startfile_prefix_2 = "/usr/lib/";
1328 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1329 static const char *tooldir_prefix;
1331 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1333 /* Subdirectory to use for locating libraries. Set by
1334 set_multilib_dir based on the compilation options. */
1336 static const char *multilib_dir;
1338 /* Structure to keep track of the specs that have been defined so far.
1339 These are accessed using %(specname) or %[specname] in a compiler
1344 /* The following 2 fields must be first */
1345 /* to allow EXTRA_SPECS to be initialized */
1346 const char *name; /* name of the spec. */
1347 const char *ptr; /* available ptr if no static pointer */
1349 /* The following fields are not initialized */
1350 /* by EXTRA_SPECS */
1351 const char **ptr_spec; /* pointer to the spec itself. */
1352 struct spec_list *next; /* Next spec in linked list. */
1353 int name_len; /* length of the name */
1354 int alloc_p; /* whether string was allocated */
1357 #define INIT_STATIC_SPEC(NAME,PTR) \
1358 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1360 /* List of statically defined specs. */
1361 static struct spec_list static_specs[] =
1363 INIT_STATIC_SPEC ("asm", &asm_spec),
1364 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1365 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1366 INIT_STATIC_SPEC ("asm_options", &asm_options),
1367 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1368 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1369 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1370 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1371 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1372 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1373 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1374 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1375 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1376 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1377 INIT_STATIC_SPEC ("link", &link_spec),
1378 INIT_STATIC_SPEC ("lib", &lib_spec),
1379 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1380 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1381 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces),
1382 INIT_STATIC_SPEC ("predefines", &cpp_predefines),
1383 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1384 INIT_STATIC_SPEC ("version", &compiler_version),
1385 INIT_STATIC_SPEC ("multilib", &multilib_select),
1386 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1387 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1388 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1389 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1390 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1391 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1392 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1393 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1394 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1397 #ifdef EXTRA_SPECS /* additional specs needed */
1398 /* Structure to keep track of just the first two args of a spec_list.
1399 That is all that the EXTRA_SPECS macro gives us. */
1402 const char *const name;
1403 const char *const ptr;
1406 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1407 static struct spec_list *extra_specs = (struct spec_list *) 0;
1410 /* List of dynamically allocates specs that have been defined so far. */
1412 static struct spec_list *specs = (struct spec_list *) 0;
1414 /* Add appropriate libgcc specs to OBSTACK, taking into account
1415 various permutations of -shared-libgcc, -shared, and such. */
1417 #ifdef ENABLE_SHARED_LIBGCC
1419 init_gcc_specs (obstack, shared_name, static_name, eh_name)
1420 struct obstack *obstack;
1421 const char *shared_name;
1422 const char *static_name;
1423 const char *eh_name;
1427 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name,
1428 "}%{!static:%{!static-libgcc:",
1429 "%{!shared:%{!shared-libgcc:", static_name, " ",
1430 eh_name, "}%{shared-libgcc:", shared_name, " ",
1431 static_name, "}}%{shared:",
1433 "%{shared-libgcc:", shared_name,
1434 "}%{!shared-libgcc:", static_name, "}",
1440 obstack_grow (obstack, buf, strlen (buf));
1443 #endif /* ENABLE_SHARED_LIBGCC */
1445 /* Initialize the specs lookup routines. */
1450 struct spec_list *next = (struct spec_list *) 0;
1451 struct spec_list *sl = (struct spec_list *) 0;
1455 return; /* Already initialized. */
1458 notice ("Using built-in specs.\n");
1461 extra_specs = (struct spec_list *)
1462 xcalloc (sizeof (struct spec_list), ARRAY_SIZE (extra_specs_1));
1464 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1466 sl = &extra_specs[i];
1467 sl->name = extra_specs_1[i].name;
1468 sl->ptr = extra_specs_1[i].ptr;
1470 sl->name_len = strlen (sl->name);
1471 sl->ptr_spec = &sl->ptr;
1476 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1478 sl = &static_specs[i];
1483 #ifdef ENABLE_SHARED_LIBGCC
1484 /* ??? If neither -shared-libgcc nor --static-libgcc was
1485 seen, then we should be making an educated guess. Some proposed
1486 heuristics for ELF include:
1488 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1489 program will be doing dynamic loading, which will likely
1490 need the shared libgcc.
1492 (2) If "-ldl", then it's also a fair bet that we're doing
1495 (3) For each ET_DYN we're linking against (either through -lfoo
1496 or /some/path/foo.so), check to see whether it or one of
1497 its dependencies depends on a shared libgcc.
1501 If the runtime is fixed to look for program headers instead
1502 of calling __register_frame_info at all, for each object,
1503 use the shared libgcc if any EH symbol referenced.
1505 If crtstuff is fixed to not invoke __register_frame_info
1506 automatically, for each object, use the shared libgcc if
1507 any non-empty unwind section found.
1509 Doing any of this probably requires invoking an external program to
1510 do the actual object file scanning. */
1512 const char *p = libgcc_spec;
1515 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1516 when given the proper command line arguments. */
1519 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1521 init_gcc_specs (&obstack,
1522 #ifdef NO_SHARED_LIBGCC_MULTILIB
1533 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1535 /* Ug. We don't know shared library extensions. Hope that
1536 systems that use this form don't do shared libraries. */
1537 init_gcc_specs (&obstack,
1538 #ifdef NO_SHARED_LIBGCC_MULTILIB
1551 obstack_1grow (&obstack, *p);
1552 in_sep = (*p == ' ');
1557 obstack_1grow (&obstack, '\0');
1558 libgcc_spec = obstack_finish (&obstack);
1561 #ifdef USE_AS_TRADITIONAL_FORMAT
1562 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1564 static const char tf[] = "--traditional-format ";
1565 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1566 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1567 asm_spec = obstack_finish (&obstack);
1571 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1572 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1573 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1574 link_spec = obstack_finish (&obstack);
1580 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1581 removed; If the spec starts with a + then SPEC is added to the end of the
1585 set_spec (name, spec)
1589 struct spec_list *sl;
1590 const char *old_spec;
1591 int name_len = strlen (name);
1594 /* If this is the first call, initialize the statically allocated specs. */
1597 struct spec_list *next = (struct spec_list *) 0;
1598 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1600 sl = &static_specs[i];
1607 /* See if the spec already exists. */
1608 for (sl = specs; sl; sl = sl->next)
1609 if (name_len == sl->name_len && !strcmp (sl->name, name))
1614 /* Not found - make it. */
1615 sl = (struct spec_list *) xmalloc (sizeof (struct spec_list));
1616 sl->name = xstrdup (name);
1617 sl->name_len = name_len;
1618 sl->ptr_spec = &sl->ptr;
1620 *(sl->ptr_spec) = "";
1625 old_spec = *(sl->ptr_spec);
1626 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1627 ? concat (old_spec, spec + 1, NULL)
1632 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1635 /* Free the old spec. */
1636 if (old_spec && sl->alloc_p)
1637 free ((PTR) old_spec);
1642 /* Accumulate a command (program name and args), and run it. */
1644 /* Vector of pointers to arguments in the current line of specifications. */
1646 static const char **argbuf;
1648 /* Number of elements allocated in argbuf. */
1650 static int argbuf_length;
1652 /* Number of elements in argbuf currently in use (containing args). */
1654 static int argbuf_index;
1656 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1657 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1660 static struct temp_name {
1661 const char *suffix; /* suffix associated with the code. */
1662 int length; /* strlen (suffix). */
1663 int unique; /* Indicates whether %g or %u/%U was used. */
1664 const char *filename; /* associated filename. */
1665 int filename_length; /* strlen (filename). */
1666 struct temp_name *next;
1669 /* Number of commands executed so far. */
1671 static int execution_count;
1673 /* Number of commands that exited with a signal. */
1675 static int signal_count;
1677 /* Name with which this program was invoked. */
1679 static const char *programname;
1681 /* Clear out the vector of arguments (after a command is executed). */
1689 /* Add one argument to the vector at the end.
1690 This is done when a space is seen or at the end of the line.
1691 If DELETE_ALWAYS is nonzero, the arg is a filename
1692 and the file should be deleted eventually.
1693 If DELETE_FAILURE is nonzero, the arg is a filename
1694 and the file should be deleted if this compilation fails. */
1697 store_arg (arg, delete_always, delete_failure)
1699 int delete_always, delete_failure;
1701 if (argbuf_index + 1 == argbuf_length)
1703 = (const char **) xrealloc (argbuf,
1704 (argbuf_length *= 2) * sizeof (const char *));
1706 argbuf[argbuf_index++] = arg;
1707 argbuf[argbuf_index] = 0;
1709 if (delete_always || delete_failure)
1710 record_temp_file (arg, delete_always, delete_failure);
1713 /* Load specs from a file name named FILENAME, replacing occurrences of
1714 various different types of line-endings, \r\n, \n\r and just \r, with
1718 load_specs (filename)
1719 const char *filename;
1723 struct stat statbuf;
1730 notice ("Reading specs from %s\n", filename);
1732 /* Open and stat the file. */
1733 desc = open (filename, O_RDONLY, 0);
1735 pfatal_with_name (filename);
1736 if (stat (filename, &statbuf) < 0)
1737 pfatal_with_name (filename);
1739 /* Read contents of file into BUFFER. */
1740 buffer = xmalloc ((unsigned) statbuf.st_size + 1);
1741 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1743 pfatal_with_name (filename);
1744 buffer[readlen] = 0;
1747 specs = xmalloc (readlen + 1);
1749 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1755 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1757 else if (*(buffer_p + 1) == '\n') /* \r\n */
1771 /* Read compilation specs from a file named FILENAME,
1772 replacing the default ones.
1774 A suffix which starts with `*' is a definition for
1775 one of the machine-specific sub-specs. The "suffix" should be
1776 *asm, *cc1, *cpp, *link, *startfile, etc.
1777 The corresponding spec is stored in asm_spec, etc.,
1778 rather than in the `compilers' vector.
1780 Anything invalid in the file is a fatal error. */
1783 read_specs (filename, main_p)
1784 const char *filename;
1790 buffer = load_specs (filename);
1792 /* Scan BUFFER for specs, putting them in the vector. */
1798 char *in, *out, *p1, *p2, *p3;
1800 /* Advance P in BUFFER to the next nonblank nocomment line. */
1801 p = skip_whitespace (p);
1805 /* Is this a special command that starts with '%'? */
1806 /* Don't allow this for the main specs file, since it would
1807 encourage people to overwrite it. */
1808 if (*p == '%' && !main_p)
1811 while (*p && *p != '\n')
1817 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1818 && (p1[sizeof "%include" - 1] == ' '
1819 || p1[sizeof "%include" - 1] == '\t'))
1823 p1 += sizeof ("%include");
1824 while (*p1 == ' ' || *p1 == '\t')
1827 if (*p1++ != '<' || p[-2] != '>')
1828 fatal ("specs %%include syntax malformed after %ld characters",
1829 (long) (p1 - buffer + 1));
1832 new_filename = find_a_file (&startfile_prefixes, p1, R_OK);
1833 read_specs (new_filename ? new_filename : p1, FALSE);
1836 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1837 && (p1[sizeof "%include_noerr" - 1] == ' '
1838 || p1[sizeof "%include_noerr" - 1] == '\t'))
1842 p1 += sizeof "%include_noerr";
1843 while (*p1 == ' ' || *p1 == '\t')
1846 if (*p1++ != '<' || p[-2] != '>')
1847 fatal ("specs %%include syntax malformed after %ld characters",
1848 (long) (p1 - buffer + 1));
1851 new_filename = find_a_file (&startfile_prefixes, p1, R_OK);
1853 read_specs (new_filename, FALSE);
1854 else if (verbose_flag)
1855 notice ("could not find specs file %s\n", p1);
1858 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1859 && (p1[sizeof "%rename" - 1] == ' '
1860 || p1[sizeof "%rename" - 1] == '\t'))
1863 struct spec_list *sl;
1864 struct spec_list *newsl;
1866 /* Get original name. */
1867 p1 += sizeof "%rename";
1868 while (*p1 == ' ' || *p1 == '\t')
1871 if (! ISALPHA ((unsigned char) *p1))
1872 fatal ("specs %%rename syntax malformed after %ld characters",
1873 (long) (p1 - buffer));
1876 while (*p2 && !ISSPACE ((unsigned char) *p2))
1879 if (*p2 != ' ' && *p2 != '\t')
1880 fatal ("specs %%rename syntax malformed after %ld characters",
1881 (long) (p2 - buffer));
1885 while (*p2 == ' ' || *p2 == '\t')
1888 if (! ISALPHA ((unsigned char) *p2))
1889 fatal ("specs %%rename syntax malformed after %ld characters",
1890 (long) (p2 - buffer));
1892 /* Get new spec name. */
1894 while (*p3 && !ISSPACE ((unsigned char) *p3))
1898 fatal ("specs %%rename syntax malformed after %ld characters",
1899 (long) (p3 - buffer));
1902 for (sl = specs; sl; sl = sl->next)
1903 if (name_len == sl->name_len && !strcmp (sl->name, p1))
1907 fatal ("specs %s spec was not found to be renamed", p1);
1909 if (strcmp (p1, p2) == 0)
1912 for (newsl = specs; newsl; newsl = newsl->next)
1913 if (strcmp (newsl->name, p2) == 0)
1914 fatal ("%s: attempt to rename spec '%s' to already defined spec '%s'",
1919 notice ("rename spec %s to %s\n", p1, p2);
1921 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
1925 set_spec (p2, *(sl->ptr_spec));
1927 free ((PTR) *(sl->ptr_spec));
1929 *(sl->ptr_spec) = "";
1934 fatal ("specs unknown %% command after %ld characters",
1935 (long) (p1 - buffer));
1938 /* Find the colon that should end the suffix. */
1940 while (*p1 && *p1 != ':' && *p1 != '\n')
1943 /* The colon shouldn't be missing. */
1945 fatal ("specs file malformed after %ld characters",
1946 (long) (p1 - buffer));
1948 /* Skip back over trailing whitespace. */
1950 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
1953 /* Copy the suffix to a string. */
1954 suffix = save_string (p, p2 - p);
1955 /* Find the next line. */
1956 p = skip_whitespace (p1 + 1);
1958 fatal ("specs file malformed after %ld characters",
1959 (long) (p - buffer));
1962 /* Find next blank line or end of string. */
1963 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
1966 /* Specs end at the blank line and do not include the newline. */
1967 spec = save_string (p, p1 - p);
1970 /* Delete backslash-newline sequences from the spec. */
1975 if (in[0] == '\\' && in[1] == '\n')
1977 else if (in[0] == '#')
1978 while (*in && *in != '\n')
1986 if (suffix[0] == '*')
1988 if (! strcmp (suffix, "*link_command"))
1989 link_command_spec = spec;
1991 set_spec (suffix + 1, spec);
1995 /* Add this pair to the vector. */
1997 = ((struct compiler *)
1998 xrealloc (compilers,
1999 (n_compilers + 2) * sizeof (struct compiler)));
2001 compilers[n_compilers].suffix = suffix;
2002 compilers[n_compilers].spec = spec;
2004 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2008 link_command_spec = spec;
2011 if (link_command_spec == 0)
2012 fatal ("spec file has no spec for linking");
2015 /* Record the names of temporary files we tell compilers to write,
2016 and delete them at the end of the run. */
2018 /* This is the common prefix we use to make temp file names.
2019 It is chosen once for each run of this program.
2020 It is substituted into a spec by %g or %j.
2021 Thus, all temp file names contain this prefix.
2022 In practice, all temp file names start with this prefix.
2024 This prefix comes from the envvar TMPDIR if it is defined;
2025 otherwise, from the P_tmpdir macro if that is defined;
2026 otherwise, in /usr/tmp or /tmp;
2027 or finally the current directory if all else fails. */
2029 static const char *temp_filename;
2031 /* Length of the prefix. */
2033 static int temp_filename_length;
2035 /* Define the list of temporary files to delete. */
2040 struct temp_file *next;
2043 /* Queue of files to delete on success or failure of compilation. */
2044 static struct temp_file *always_delete_queue;
2045 /* Queue of files to delete on failure of compilation. */
2046 static struct temp_file *failure_delete_queue;
2048 /* Record FILENAME as a file to be deleted automatically.
2049 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2050 otherwise delete it in any case.
2051 FAIL_DELETE nonzero means delete it if a compilation step fails;
2052 otherwise delete it in any case. */
2055 record_temp_file (filename, always_delete, fail_delete)
2056 const char *filename;
2060 char *const name = xstrdup (filename);
2064 struct temp_file *temp;
2065 for (temp = always_delete_queue; temp; temp = temp->next)
2066 if (! strcmp (name, temp->name))
2069 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
2070 temp->next = always_delete_queue;
2072 always_delete_queue = temp;
2079 struct temp_file *temp;
2080 for (temp = failure_delete_queue; temp; temp = temp->next)
2081 if (! strcmp (name, temp->name))
2084 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
2085 temp->next = failure_delete_queue;
2087 failure_delete_queue = temp;
2093 /* Delete all the temporary files whose names we previously recorded. */
2096 delete_if_ordinary (name)
2103 printf ("Delete %s? (y or n) ", name);
2107 while ((c = getchar ()) != '\n' && c != EOF)
2110 if (i == 'y' || i == 'Y')
2112 if (stat (name, &st) >= 0 && S_ISREG (st.st_mode))
2113 if (unlink (name) < 0)
2115 perror_with_name (name);
2119 delete_temp_files ()
2121 struct temp_file *temp;
2123 for (temp = always_delete_queue; temp; temp = temp->next)
2124 delete_if_ordinary (temp->name);
2125 always_delete_queue = 0;
2128 /* Delete all the files to be deleted on error. */
2131 delete_failure_queue ()
2133 struct temp_file *temp;
2135 for (temp = failure_delete_queue; temp; temp = temp->next)
2136 delete_if_ordinary (temp->name);
2140 clear_failure_queue ()
2142 failure_delete_queue = 0;
2145 /* Build a list of search directories from PATHS.
2146 PREFIX is a string to prepend to the list.
2147 If CHECK_DIR_P is non-zero we ensure the directory exists.
2148 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2149 It is also used by the --print-search-dirs flag. */
2152 build_search_list (paths, prefix, check_dir_p)
2153 struct path_prefix *paths;
2157 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0;
2159 = (just_machine_suffix) ? strlen (just_machine_suffix) : 0;
2160 int first_time = TRUE;
2161 struct prefix_list *pprefix;
2163 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2164 obstack_1grow (&collect_obstack, '=');
2166 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next)
2168 int len = strlen (pprefix->prefix);
2172 || is_directory (pprefix->prefix, machine_suffix, 0)))
2175 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2178 obstack_grow (&collect_obstack, pprefix->prefix, len);
2179 obstack_grow (&collect_obstack, machine_suffix, suffix_len);
2182 if (just_machine_suffix
2183 && pprefix->require_machine_suffix == 2
2185 || is_directory (pprefix->prefix, just_machine_suffix, 0)))
2188 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2191 obstack_grow (&collect_obstack, pprefix->prefix, len);
2192 obstack_grow (&collect_obstack, just_machine_suffix,
2196 if (! pprefix->require_machine_suffix)
2199 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2202 obstack_grow (&collect_obstack, pprefix->prefix, len);
2206 obstack_1grow (&collect_obstack, '\0');
2207 return obstack_finish (&collect_obstack);
2210 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2214 putenv_from_prefixes (paths, env_var)
2215 struct path_prefix *paths;
2216 const char *env_var;
2218 putenv (build_search_list (paths, env_var, 1));
2223 /* FIXME: the location independence code for VMS is hairier than this,
2224 and hasn't been written. */
2226 /* Split a filename into component directories. */
2229 split_directories (name, ptr_num_dirs)
2238 /* Count the number of directories. Special case MSDOS disk names as part
2239 of the initial directory. */
2241 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2242 if (name[1] == ':' && IS_DIR_SEPARATOR (name[2]))
2247 #endif /* HAVE_DOS_BASED_FILE_SYSTEM */
2249 while ((ch = *p++) != '\0')
2251 if (IS_DIR_SEPARATOR (ch))
2254 while (IS_DIR_SEPARATOR (*p))
2259 dirs = (char **) xmalloc (sizeof (char *) * (num_dirs + 2));
2261 /* Now copy the directory parts. */
2264 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2265 if (name[1] == ':' && IS_DIR_SEPARATOR (name[2]))
2267 dirs[num_dirs++] = save_string (p, 3);
2270 #endif /* HAVE_DOS_BASED_FILE_SYSTEM */
2273 while ((ch = *p++) != '\0')
2275 if (IS_DIR_SEPARATOR (ch))
2277 while (IS_DIR_SEPARATOR (*p))
2280 dirs[num_dirs++] = save_string (q, p - q);
2286 dirs[num_dirs++] = save_string (q, p - 1 - q);
2288 dirs[num_dirs] = NULL;
2290 *ptr_num_dirs = num_dirs;
2295 /* Release storage held by split directories. */
2298 free_split_directories (dirs)
2303 while (dirs[i] != NULL)
2306 free ((char *) dirs);
2309 /* Given three strings PROGNAME, BIN_PREFIX, PREFIX, return a string that gets
2310 to PREFIX starting with the directory portion of PROGNAME and a relative
2311 pathname of the difference between BIN_PREFIX and PREFIX.
2313 For example, if BIN_PREFIX is /alpha/beta/gamma/gcc/delta, PREFIX is
2314 /alpha/beta/gamma/omega/, and PROGNAME is /red/green/blue/gcc, then this
2315 function will return /red/green/blue/../omega.
2317 If no relative prefix can be found, return NULL. */
2320 make_relative_prefix (progname, bin_prefix, prefix)
2321 const char *progname;
2322 const char *bin_prefix;
2325 char **prog_dirs, **bin_dirs, **prefix_dirs;
2326 int prog_num, bin_num, prefix_num, std_loc_p;
2329 prog_dirs = split_directories (progname, &prog_num);
2330 bin_dirs = split_directories (bin_prefix, &bin_num);
2332 /* If there is no full pathname, try to find the program by checking in each
2333 of the directories specified in the PATH environment variable. */
2338 GET_ENV_PATH_LIST (temp, "PATH");
2341 char *startp, *endp, *nstore;
2342 size_t prefixlen = strlen (temp) + 1;
2346 nstore = (char *) alloca (prefixlen + strlen (progname) + 1);
2348 startp = endp = temp;
2351 if (*endp == PATH_SEPARATOR || *endp == 0)
2356 nstore[1] = DIR_SEPARATOR;
2361 strncpy (nstore, startp, endp - startp);
2362 if (! IS_DIR_SEPARATOR (endp[-1]))
2364 nstore[endp - startp] = DIR_SEPARATOR;
2365 nstore[endp - startp + 1] = 0;
2368 nstore[endp - startp] = 0;
2370 strcat (nstore, progname);
2371 if (! access (nstore, X_OK)
2372 #ifdef HAVE_HOST_EXECUTABLE_SUFFIX
2373 || ! access (strcat (nstore, HOST_EXECUTABLE_SUFFIX), X_OK)
2377 free_split_directories (prog_dirs);
2379 prog_dirs = split_directories (progname, &prog_num);
2385 endp = startp = endp + 1;
2393 /* Remove the program name from comparison of directory names. */
2396 /* Determine if the compiler is installed in the standard location, and if
2397 so, we don't need to specify relative directories. Also, if argv[0]
2398 doesn't contain any directory specifiers, there is not much we can do. */
2400 if (prog_num == bin_num)
2402 for (i = 0; i < bin_num; i++)
2404 if (strcmp (prog_dirs[i], bin_dirs[i]) != 0)
2408 if (prog_num <= 0 || i == bin_num)
2411 free_split_directories (prog_dirs);
2412 free_split_directories (bin_dirs);
2413 prog_dirs = bin_dirs = (char **) 0;
2418 prefix_dirs = split_directories (prefix, &prefix_num);
2420 /* Find how many directories are in common between bin_prefix & prefix. */
2421 n = (prefix_num < bin_num) ? prefix_num : bin_num;
2422 for (common = 0; common < n; common++)
2424 if (strcmp (bin_dirs[common], prefix_dirs[common]) != 0)
2428 /* If there are no common directories, there can be no relative prefix. */
2431 free_split_directories (prog_dirs);
2432 free_split_directories (bin_dirs);
2433 free_split_directories (prefix_dirs);
2437 /* Build up the pathnames in argv[0]. */
2438 for (i = 0; i < prog_num; i++)
2439 obstack_grow (&obstack, prog_dirs[i], strlen (prog_dirs[i]));
2441 /* Now build up the ..'s. */
2442 for (i = common; i < n; i++)
2444 obstack_grow (&obstack, DIR_UP, sizeof (DIR_UP) - 1);
2445 obstack_1grow (&obstack, DIR_SEPARATOR);
2448 /* Put in directories to move over to prefix. */
2449 for (i = common; i < prefix_num; i++)
2450 obstack_grow (&obstack, prefix_dirs[i], strlen (prefix_dirs[i]));
2452 free_split_directories (prog_dirs);
2453 free_split_directories (bin_dirs);
2454 free_split_directories (prefix_dirs);
2456 obstack_1grow (&obstack, '\0');
2457 return obstack_finish (&obstack);
2461 /* Check whether NAME can be accessed in MODE. This is like access,
2462 except that it never considers directories to be executable. */
2465 access_check (name, mode)
2473 if (stat (name, &st) < 0
2474 || S_ISDIR (st.st_mode))
2478 return access (name, mode);
2481 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2482 access to check permissions.
2483 Return 0 if not found, otherwise return its name, allocated with malloc. */
2486 find_a_file (pprefix, name, mode)
2487 struct path_prefix *pprefix;
2492 const char *const file_suffix =
2493 ((mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "");
2494 struct prefix_list *pl;
2495 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1;
2497 #ifdef DEFAULT_ASSEMBLER
2498 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2499 return xstrdup (DEFAULT_ASSEMBLER);
2502 #ifdef DEFAULT_LINKER
2503 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2504 return xstrdup (DEFAULT_LINKER);
2508 len += strlen (machine_suffix);
2510 temp = xmalloc (len);
2512 /* Determine the filename to execute (special case for absolute paths). */
2514 if (IS_ABSOLUTE_PATHNAME (name))
2516 if (access (name, mode) == 0)
2518 strcpy (temp, name);
2523 for (pl = pprefix->plist; pl; pl = pl->next)
2527 /* Some systems have a suffix for executable files.
2528 So try appending that first. */
2529 if (file_suffix[0] != 0)
2531 strcpy (temp, pl->prefix);
2532 strcat (temp, machine_suffix);
2533 strcat (temp, name);
2534 strcat (temp, file_suffix);
2535 if (access_check (temp, mode) == 0)
2537 if (pl->used_flag_ptr != 0)
2538 *pl->used_flag_ptr = 1;
2543 /* Now try just the name. */
2544 strcpy (temp, pl->prefix);
2545 strcat (temp, machine_suffix);
2546 strcat (temp, name);
2547 if (access_check (temp, mode) == 0)
2549 if (pl->used_flag_ptr != 0)
2550 *pl->used_flag_ptr = 1;
2555 /* Certain prefixes are tried with just the machine type,
2556 not the version. This is used for finding as, ld, etc. */
2557 if (just_machine_suffix && pl->require_machine_suffix == 2)
2559 /* Some systems have a suffix for executable files.
2560 So try appending that first. */
2561 if (file_suffix[0] != 0)
2563 strcpy (temp, pl->prefix);
2564 strcat (temp, just_machine_suffix);
2565 strcat (temp, name);
2566 strcat (temp, file_suffix);
2567 if (access_check (temp, mode) == 0)
2569 if (pl->used_flag_ptr != 0)
2570 *pl->used_flag_ptr = 1;
2575 strcpy (temp, pl->prefix);
2576 strcat (temp, just_machine_suffix);
2577 strcat (temp, name);
2578 if (access_check (temp, mode) == 0)
2580 if (pl->used_flag_ptr != 0)
2581 *pl->used_flag_ptr = 1;
2586 /* Certain prefixes can't be used without the machine suffix
2587 when the machine or version is explicitly specified. */
2588 if (! pl->require_machine_suffix)
2590 /* Some systems have a suffix for executable files.
2591 So try appending that first. */
2592 if (file_suffix[0] != 0)
2594 strcpy (temp, pl->prefix);
2595 strcat (temp, name);
2596 strcat (temp, file_suffix);
2597 if (access_check (temp, mode) == 0)
2599 if (pl->used_flag_ptr != 0)
2600 *pl->used_flag_ptr = 1;
2605 strcpy (temp, pl->prefix);
2606 strcat (temp, name);
2607 if (access_check (temp, mode) == 0)
2609 if (pl->used_flag_ptr != 0)
2610 *pl->used_flag_ptr = 1;
2620 /* Ranking of prefixes in the sort list. -B prefixes are put before
2623 enum path_prefix_priority
2625 PREFIX_PRIORITY_B_OPT,
2626 PREFIX_PRIORITY_LAST
2629 /* Add an entry for PREFIX in PLIST. The PLIST is kept in assending
2630 order according to PRIORITY. Within each PRIORITY, new entries are
2633 If WARN is nonzero, we will warn if no file is found
2634 through this prefix. WARN should point to an int
2635 which will be set to 1 if this entry is used.
2637 COMPONENT is the value to be passed to update_path.
2639 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2640 the complete value of machine_suffix.
2641 2 means try both machine_suffix and just_machine_suffix. */
2644 add_prefix (pprefix, prefix, component, priority, require_machine_suffix, warn)
2645 struct path_prefix *pprefix;
2647 const char *component;
2648 /* enum prefix_priority */ int priority;
2649 int require_machine_suffix;
2652 struct prefix_list *pl, **prev;
2655 for (prev = &pprefix->plist;
2656 (*prev) != NULL && (*prev)->priority <= priority;
2657 prev = &(*prev)->next)
2660 /* Keep track of the longest prefix */
2662 prefix = update_path (prefix, component);
2663 len = strlen (prefix);
2664 if (len > pprefix->max_len)
2665 pprefix->max_len = len;
2667 pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
2668 pl->prefix = prefix;
2669 pl->require_machine_suffix = require_machine_suffix;
2670 pl->used_flag_ptr = warn;
2671 pl->priority = priority;
2675 /* Insert after PREV */
2680 /* Execute the command specified by the arguments on the current line of spec.
2681 When using pipes, this includes several piped-together commands
2682 with `|' between them.
2684 Return 0 if successful, -1 if failed. */
2690 int n_commands; /* # of command. */
2694 const char *prog; /* program name. */
2695 const char **argv; /* vector of args. */
2696 int pid; /* pid of process for this command. */
2699 struct command *commands; /* each command buffer with above info. */
2701 /* Count # of piped commands. */
2702 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2703 if (strcmp (argbuf[i], "|") == 0)
2706 /* Get storage for each command. */
2707 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2709 /* Split argbuf into its separate piped processes,
2710 and record info about each one.
2711 Also search for the programs that are to be run. */
2713 commands[0].prog = argbuf[0]; /* first command. */
2714 commands[0].argv = &argbuf[0];
2715 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK);
2718 commands[0].argv[0] = string;
2720 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2721 if (strcmp (argbuf[i], "|") == 0)
2722 { /* each command. */
2723 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2724 fatal ("-pipe not supported");
2726 argbuf[i] = 0; /* termination of command args. */
2727 commands[n_commands].prog = argbuf[i + 1];
2728 commands[n_commands].argv = &argbuf[i + 1];
2729 string = find_a_file (&exec_prefixes, commands[n_commands].prog, X_OK);
2731 commands[n_commands].argv[0] = string;
2735 argbuf[argbuf_index] = 0;
2737 /* If -v, print what we are about to do, and maybe query. */
2741 /* For help listings, put a blank line between sub-processes. */
2742 if (print_help_list)
2743 fputc ('\n', stderr);
2745 /* Print each piped command as a separate line. */
2746 for (i = 0; i < n_commands; i++)
2748 const char *const *j;
2750 if (verbose_only_flag)
2752 for (j = commands[i].argv; *j; j++)
2755 fprintf (stderr, " \"");
2756 for (p = *j; *p; ++p)
2758 if (*p == '"' || *p == '\\' || *p == '$')
2759 fputc ('\\', stderr);
2762 fputc ('"', stderr);
2766 for (j = commands[i].argv; *j; j++)
2767 fprintf (stderr, " %s", *j);
2769 /* Print a pipe symbol after all but the last command. */
2770 if (i + 1 != n_commands)
2771 fprintf (stderr, " |");
2772 fprintf (stderr, "\n");
2775 if (verbose_only_flag != 0)
2778 notice ("\nGo ahead? (y or n) ");
2782 while (getchar () != '\n')
2785 if (i != 'y' && i != 'Y')
2790 /* Run each piped subprocess. */
2792 for (i = 0; i < n_commands; i++)
2794 char *errmsg_fmt, *errmsg_arg;
2795 const char *string = commands[i].argv[0];
2797 /* For some bizarre reason, the second argument of execvp() is
2798 char *const *, not const char *const *. */
2799 commands[i].pid = pexecute (string, (char *const *) commands[i].argv,
2800 programname, temp_filename,
2801 &errmsg_fmt, &errmsg_arg,
2802 ((i == 0 ? PEXECUTE_FIRST : 0)
2803 | (i + 1 == n_commands ? PEXECUTE_LAST : 0)
2804 | (string == commands[i].prog
2805 ? PEXECUTE_SEARCH : 0)
2806 | (verbose_flag ? PEXECUTE_VERBOSE : 0)));
2808 if (commands[i].pid == -1)
2809 pfatal_pexecute (errmsg_fmt, errmsg_arg);
2811 if (string != commands[i].prog)
2812 free ((PTR) string);
2817 /* Wait for all the subprocesses to finish.
2818 We don't care what order they finish in;
2819 we know that N_COMMANDS waits will get them all.
2820 Ignore subprocesses that we don't know about,
2821 since they can be spawned by the process that exec'ed us. */
2825 #ifdef HAVE_GETRUSAGE
2827 double ut = 0.0, st = 0.0;
2830 for (i = 0; i < n_commands;)
2836 pid = pwait (commands[i].pid, &status, 0);
2840 #ifdef HAVE_GETRUSAGE
2843 /* getrusage returns the total resource usage of all children
2844 up to now. Copy the previous values into prus, get the
2845 current statistics, then take the difference. */
2848 getrusage (RUSAGE_CHILDREN, &rus);
2849 d.tv_sec = rus.ru_utime.tv_sec - prus.ru_utime.tv_sec;
2850 d.tv_usec = rus.ru_utime.tv_usec - prus.ru_utime.tv_usec;
2851 ut = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2853 d.tv_sec = rus.ru_stime.tv_sec - prus.ru_stime.tv_sec;
2854 d.tv_usec = rus.ru_stime.tv_usec - prus.ru_stime.tv_usec;
2855 st = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2859 for (j = 0; j < n_commands; j++)
2860 if (commands[j].pid == pid)
2863 if (WIFSIGNALED (status))
2866 /* SIGPIPE is a special case. It happens in -pipe mode
2867 when the compiler dies before the preprocessor is
2868 done, or the assembler dies before the compiler is
2869 done. There's generally been an error already, and
2870 this is just fallout. So don't generate another error
2871 unless we would otherwise have succeeded. */
2872 if (WTERMSIG (status) == SIGPIPE
2873 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2878 Internal error: %s (program %s)\n\
2879 Please submit a full bug report.\n\
2880 See %s for instructions.",
2881 strsignal (WTERMSIG (status)), commands[j].prog,
2886 else if (WIFEXITED (status)
2887 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2889 if (WEXITSTATUS (status) > greatest_status)
2890 greatest_status = WEXITSTATUS (status);
2893 #ifdef HAVE_GETRUSAGE
2894 if (report_times && ut + st != 0)
2895 notice ("# %s %.2f %.2f\n", commands[j].prog, ut, st);
2904 /* Find all the switches given to us
2905 and make a vector describing them.
2906 The elements of the vector are strings, one per switch given.
2907 If a switch uses following arguments, then the `part1' field
2908 is the switch itself and the `args' field
2909 is a null-terminated vector containing the following arguments.
2910 The `live_cond' field is:
2912 1 if the switch is true in a conditional spec,
2913 -1 if false (overridden by a later switch)
2914 -2 if this switch should be ignored (used in %{<S})
2915 The `validated' field is nonzero if any spec has looked at this switch;
2916 if it remains zero at the end of the run, it must be meaningless. */
2919 #define SWITCH_FALSE -1
2920 #define SWITCH_IGNORE -2
2921 #define SWITCH_LIVE 1
2928 unsigned char validated;
2929 unsigned char ordering;
2932 static struct switchstr *switches;
2934 static int n_switches;
2939 const char *language;
2942 /* Also a vector of input files specified. */
2944 static struct infile *infiles;
2948 /* This counts the number of libraries added by lang_specific_driver, so that
2949 we can tell if there were any user supplied any files or libraries. */
2951 static int added_libraries;
2953 /* And a vector of corresponding output files is made up later. */
2955 const char **outfiles;
2957 /* Used to track if none of the -B paths are used. */
2960 /* Used to track if standard path isn't used and -b or -V is specified. */
2961 static int warn_std;
2963 /* Gives value to pass as "warn" to add_prefix for standard prefixes. */
2964 static int *warn_std_ptr = 0;
2966 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2968 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2969 is true if we should look for an executable suffix. DO_OBJ
2970 is true if we should look for an object suffix. */
2973 convert_filename (name, do_exe, do_obj)
2975 int do_exe ATTRIBUTE_UNUSED;
2976 int do_obj ATTRIBUTE_UNUSED;
2978 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2986 len = strlen (name);
2988 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2989 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2990 if (do_obj && len > 2
2991 && name[len - 2] == '.'
2992 && name[len - 1] == 'o')
2994 obstack_grow (&obstack, name, len - 2);
2995 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2996 name = obstack_finish (&obstack);
3000 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3001 /* If there is no filetype, make it the executable suffix (which includes
3002 the "."). But don't get confused if we have just "-o". */
3003 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
3006 for (i = len - 1; i >= 0; i--)
3007 if (IS_DIR_SEPARATOR (name[i]))
3010 for (i++; i < len; i++)
3014 obstack_grow (&obstack, name, len);
3015 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
3016 strlen (TARGET_EXECUTABLE_SUFFIX));
3017 name = obstack_finish (&obstack);
3024 /* Display the command line switches accepted by gcc. */
3028 printf (_("Usage: %s [options] file...\n"), programname);
3029 fputs (_("Options:\n"), stdout);
3031 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
3032 fputs (_(" --help Display this information\n"), stdout);
3033 fputs (_(" --target-help Display target specific command line options\n"), stdout);
3035 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
3036 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
3037 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
3038 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
3039 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
3040 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
3041 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
3042 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
3043 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
3045 -print-multi-lib Display the mapping between command line options and\n\
3046 multiple library search directories\n"), stdout);
3047 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3048 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3049 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3050 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3051 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3052 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3053 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3054 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3055 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3056 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3057 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
3058 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
3059 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3060 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3061 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3062 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3063 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3064 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3066 -x <language> Specify the language of the following input files\n\
3067 Permissable languages include: c c++ assembler none\n\
3068 'none' means revert to the default behavior of\n\
3069 guessing the language based on the file's extension\n\
3073 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3074 passed on to the various sub-processes invoked by %s. In order to pass\n\
3075 other options on to these processes the -W<letter> options must be used.\n\
3078 /* The rest of the options are displayed by invocations of the various
3083 add_preprocessor_option (option, len)
3087 n_preprocessor_options++;
3089 if (! preprocessor_options)
3090 preprocessor_options
3091 = (char **) xmalloc (n_preprocessor_options * sizeof (char *));
3093 preprocessor_options
3094 = (char **) xrealloc (preprocessor_options,
3095 n_preprocessor_options * sizeof (char *));
3097 preprocessor_options [n_preprocessor_options - 1] =
3098 save_string (option, len);
3102 add_assembler_option (option, len)
3106 n_assembler_options++;
3108 if (! assembler_options)
3110 = (char **) xmalloc (n_assembler_options * sizeof (char *));
3113 = (char **) xrealloc (assembler_options,
3114 n_assembler_options * sizeof (char *));
3116 assembler_options [n_assembler_options - 1] = save_string (option, len);
3120 add_linker_option (option, len)
3126 if (! linker_options)
3128 = (char **) xmalloc (n_linker_options * sizeof (char *));
3131 = (char **) xrealloc (linker_options,
3132 n_linker_options * sizeof (char *));
3134 linker_options [n_linker_options - 1] = save_string (option, len);
3137 /* Create the vector `switches' and its contents.
3138 Store its length in `n_switches'. */
3141 process_command (argc, argv)
3143 const char *const *argv;
3148 const char *spec_lang = 0;
3149 int last_language_n_infiles;
3152 int lang_n_infiles = 0;
3153 #ifdef MODIFY_TARGET_NAME
3154 int is_modify_target_name;
3158 GET_ENV_PATH_LIST (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3162 added_libraries = 0;
3164 /* Figure compiler version from version string. */
3166 compiler_version = temp1 = xstrdup (version_string);
3168 for (; *temp1; ++temp1)
3177 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3178 see if we can create it from the pathname specified in argv[0]. */
3181 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3182 if (!gcc_exec_prefix)
3184 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
3185 standard_exec_prefix);
3186 if (gcc_exec_prefix)
3187 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3191 if (gcc_exec_prefix)
3193 int len = strlen (gcc_exec_prefix);
3195 if (len > (int) sizeof ("/lib/gcc-lib/") - 1
3196 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3198 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc-lib/") + 1;
3199 if (IS_DIR_SEPARATOR (*temp)
3200 && strncmp (temp + 1, "lib", 3) == 0
3201 && IS_DIR_SEPARATOR (temp[4])
3202 && strncmp (temp + 5, "gcc-lib", 7) == 0)
3203 len -= sizeof ("/lib/gcc-lib/") - 1;
3206 set_std_prefix (gcc_exec_prefix, len);
3207 add_prefix (&exec_prefixes, gcc_exec_prefix, "GCC",
3208 PREFIX_PRIORITY_LAST, 0, NULL);
3209 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3210 PREFIX_PRIORITY_LAST, 0, NULL);
3213 /* COMPILER_PATH and LIBRARY_PATH have values
3214 that are lists of directory names with colons. */
3216 GET_ENV_PATH_LIST (temp, "COMPILER_PATH");
3219 const char *startp, *endp;
3220 char *nstore = (char *) alloca (strlen (temp) + 3);
3222 startp = endp = temp;
3225 if (*endp == PATH_SEPARATOR || *endp == 0)
3227 strncpy (nstore, startp, endp - startp);
3229 strcpy (nstore, concat (".", dir_separator_str, NULL));
3230 else if (!IS_DIR_SEPARATOR (endp[-1]))
3232 nstore[endp - startp] = DIR_SEPARATOR;
3233 nstore[endp - startp + 1] = 0;
3236 nstore[endp - startp] = 0;
3237 add_prefix (&exec_prefixes, nstore, 0,
3238 PREFIX_PRIORITY_LAST, 0, NULL);
3239 add_prefix (&include_prefixes,
3240 concat (nstore, "include", NULL),
3241 0, PREFIX_PRIORITY_LAST, 0, NULL);
3244 endp = startp = endp + 1;
3251 GET_ENV_PATH_LIST (temp, LIBRARY_PATH_ENV);
3252 if (temp && *cross_compile == '0')
3254 const char *startp, *endp;
3255 char *nstore = (char *) alloca (strlen (temp) + 3);
3257 startp = endp = temp;
3260 if (*endp == PATH_SEPARATOR || *endp == 0)
3262 strncpy (nstore, startp, endp - startp);
3264 strcpy (nstore, concat (".", dir_separator_str, NULL));
3265 else if (!IS_DIR_SEPARATOR (endp[-1]))
3267 nstore[endp - startp] = DIR_SEPARATOR;
3268 nstore[endp - startp + 1] = 0;
3271 nstore[endp - startp] = 0;
3272 add_prefix (&startfile_prefixes, nstore, NULL,
3273 PREFIX_PRIORITY_LAST, 0, NULL);
3276 endp = startp = endp + 1;
3283 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3284 GET_ENV_PATH_LIST (temp, "LPATH");
3285 if (temp && *cross_compile == '0')
3287 const char *startp, *endp;
3288 char *nstore = (char *) alloca (strlen (temp) + 3);
3290 startp = endp = temp;
3293 if (*endp == PATH_SEPARATOR || *endp == 0)
3295 strncpy (nstore, startp, endp - startp);
3297 strcpy (nstore, concat (".", dir_separator_str, NULL));
3298 else if (!IS_DIR_SEPARATOR (endp[-1]))
3300 nstore[endp - startp] = DIR_SEPARATOR;
3301 nstore[endp - startp + 1] = 0;
3304 nstore[endp - startp] = 0;
3305 add_prefix (&startfile_prefixes, nstore, NULL,
3306 PREFIX_PRIORITY_LAST, 0, NULL);
3309 endp = startp = endp + 1;
3316 /* Convert new-style -- options to old-style. */
3317 translate_options (&argc, &argv);
3319 /* Do language-specific adjustment/addition of flags. */
3320 lang_specific_driver (&argc, &argv, &added_libraries);
3322 /* Scan argv twice. Here, the first time, just count how many switches
3323 there will be in their vector, and how many input files in theirs.
3324 Also parse any switches that determine the configuration name, such as -b.
3325 Here we also parse the switches that cc itself uses (e.g. -v). */
3327 for (i = 1; i < argc; i++)
3329 if (! strcmp (argv[i], "-dumpspecs"))
3331 struct spec_list *sl;
3333 for (sl = specs; sl; sl = sl->next)
3334 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3335 if (link_command_spec)
3336 printf ("*link_command:\n%s\n\n", link_command_spec);
3339 else if (! strcmp (argv[i], "-dumpversion"))
3341 printf ("%s\n", spec_version);
3344 else if (! strcmp (argv[i], "-dumpmachine"))
3346 printf ("%s\n", spec_machine);
3349 else if (strcmp (argv[i], "-fversion") == 0)
3351 /* translate_options () has turned --version into -fversion. */
3352 printf (_("%s (GCC) %s\n"), programname, version_string);
3353 fputs (_("Copyright (C) 2002 Free Software Foundation, Inc.\n"),
3355 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
3356 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
3360 else if (strcmp (argv[i], "-fhelp") == 0)
3362 /* translate_options () has turned --help into -fhelp. */
3363 print_help_list = 1;
3365 /* We will be passing a dummy file on to the sub-processes. */
3369 /* CPP driver cannot obtain switch from cc1_options. */
3371 add_preprocessor_option ("--help", 6);
3372 add_assembler_option ("--help", 6);
3373 add_linker_option ("--help", 6);
3375 else if (strcmp (argv[i], "-ftarget-help") == 0)
3377 /* translate_options() has turned --target-help into -ftarget-help. */
3378 target_help_flag = 1;
3380 /* We will be passing a dummy file on to the sub-processes. */
3384 /* CPP driver cannot obtain switch from cc1_options. */
3386 add_preprocessor_option ("--target-help", 13);
3387 add_assembler_option ("--target-help", 13);
3388 add_linker_option ("--target-help", 13);
3390 else if (! strcmp (argv[i], "-pass-exit-codes"))
3392 pass_exit_codes = 1;
3395 else if (! strcmp (argv[i], "-print-search-dirs"))
3396 print_search_dirs = 1;
3397 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3398 print_file_name = "libgcc.a";
3399 else if (! strncmp (argv[i], "-print-file-name=", 17))
3400 print_file_name = argv[i] + 17;
3401 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3402 print_prog_name = argv[i] + 17;
3403 else if (! strcmp (argv[i], "-print-multi-lib"))
3404 print_multi_lib = 1;
3405 else if (! strcmp (argv[i], "-print-multi-directory"))
3406 print_multi_directory = 1;
3407 else if (! strncmp (argv[i], "-Wa,", 4))
3410 /* Pass the rest of this option to the assembler. */
3412 /* Split the argument at commas. */
3414 for (j = 4; argv[i][j]; j++)
3415 if (argv[i][j] == ',')
3417 add_assembler_option (argv[i] + prev, j - prev);
3421 /* Record the part after the last comma. */
3422 add_assembler_option (argv[i] + prev, j - prev);
3424 else if (! strncmp (argv[i], "-Wp,", 4))
3427 /* Pass the rest of this option to the preprocessor. */
3429 /* Split the argument at commas. */
3431 for (j = 4; argv[i][j]; j++)
3432 if (argv[i][j] == ',')
3434 add_preprocessor_option (argv[i] + prev, j - prev);
3438 /* Record the part after the last comma. */
3439 add_preprocessor_option (argv[i] + prev, j - prev);
3441 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3442 /* The +e options to the C++ front-end. */
3444 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3447 /* Split the argument at commas. */
3448 for (j = 3; argv[i][j]; j++)
3449 n_infiles += (argv[i][j] == ',');
3451 else if (strcmp (argv[i], "-Xlinker") == 0)
3454 fatal ("argument to `-Xlinker' is missing");
3459 else if (strcmp (argv[i], "-l") == 0)
3462 fatal ("argument to `-l' is missing");
3467 else if (strncmp (argv[i], "-l", 2) == 0)
3469 else if (strcmp (argv[i], "-save-temps") == 0)
3471 save_temps_flag = 1;
3474 else if (strcmp (argv[i], "-specs") == 0)
3476 struct user_specs *user = (struct user_specs *)
3477 xmalloc (sizeof (struct user_specs));
3479 fatal ("argument to `-specs' is missing");
3481 user->next = (struct user_specs *) 0;
3482 user->filename = argv[i];
3483 if (user_specs_tail)
3484 user_specs_tail->next = user;
3486 user_specs_head = user;
3487 user_specs_tail = user;
3489 else if (strncmp (argv[i], "-specs=", 7) == 0)
3491 struct user_specs *user = (struct user_specs *)
3492 xmalloc (sizeof (struct user_specs));
3493 if (strlen (argv[i]) == 7)
3494 fatal ("argument to `-specs=' is missing");
3496 user->next = (struct user_specs *) 0;
3497 user->filename = argv[i] + 7;
3498 if (user_specs_tail)
3499 user_specs_tail->next = user;
3501 user_specs_head = user;
3502 user_specs_tail = user;
3504 else if (strcmp (argv[i], "-time") == 0)
3506 else if (strcmp (argv[i], "-###") == 0)
3508 /* This is similar to -v except that there is no execution
3509 of the commands and the echoed arguments are quoted. It
3510 is intended for use in shell scripts to capture the
3511 driver-generated command line. */
3512 verbose_only_flag++;
3515 else if (argv[i][0] == '-' && argv[i][1] != 0)
3517 const char *p = &argv[i][1];
3524 if (p[1] == 0 && i + 1 == argc)
3525 fatal ("argument to `-b' is missing");
3527 spec_machine = argv[++i];
3529 spec_machine = p + 1;
3531 warn_std_ptr = &warn_std;
3539 if (p[1] == 0 && i + 1 == argc)
3540 fatal ("argument to `-B' is missing");
3546 len = strlen (value);
3548 /* Catch the case where the user has forgotten to append a
3549 directory separator to the path. Note, they may be using
3550 -B to add an executable name prefix, eg "i386-elf-", in
3551 order to distinguish between multiple installations of
3552 GCC in the same directory. Hence we must check to see
3553 if appending a directory separator actually makes a
3554 valid directory name. */
3555 if (! IS_DIR_SEPARATOR (value [len - 1])
3556 && is_directory (value, "", 0))
3558 char *tmp = xmalloc (len + 2);
3559 strcpy (tmp, value);
3560 tmp[len] = DIR_SEPARATOR;
3565 /* As a kludge, if the arg is "[foo/]stageN/", just
3566 add "[foo/]include" to the include prefix. */
3569 && (IS_DIR_SEPARATOR (value[len - 8]))))
3570 && strncmp (value + len - 7, "stage", 5) == 0
3571 && ISDIGIT (value[len - 2])
3572 && (IS_DIR_SEPARATOR (value[len - 1])))
3575 add_prefix (&include_prefixes, "include", NULL,
3576 PREFIX_PRIORITY_B_OPT, 0, NULL);
3579 char * string = xmalloc (len + 1);
3581 strncpy (string, value, len - 7);
3582 strcpy (string + len - 7, "include");
3583 add_prefix (&include_prefixes, string, NULL,
3584 PREFIX_PRIORITY_B_OPT, 0, NULL);
3588 add_prefix (&exec_prefixes, value, NULL,
3589 PREFIX_PRIORITY_B_OPT, 0, &warn_B);
3590 add_prefix (&startfile_prefixes, value, NULL,
3591 PREFIX_PRIORITY_B_OPT, 0, &warn_B);
3592 add_prefix (&include_prefixes, concat (value, "include", NULL),
3593 NULL, PREFIX_PRIORITY_B_OPT, 0, NULL);
3598 case 'v': /* Print our subcommands and print versions. */
3600 /* If they do anything other than exactly `-v', don't set
3601 verbose_flag; rather, continue on to give the error. */
3619 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3624 /* Forward scan, just in case -S or -c is specified
3631 if (argv[j][0] == '-')
3633 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
3639 else if ((skip = SWITCH_TAKES_ARG (argv[j][1])))
3640 j += skip - (argv[j][2] != 0);
3641 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1)))
3648 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3650 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0);
3652 argv[i] = convert_filename (argv[i], ! have_c, 0);
3659 #ifdef MODIFY_TARGET_NAME
3660 is_modify_target_name = 0;
3662 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3663 if (! strcmp (argv[i], modify_target[j].sw))
3666 = (char *) xmalloc (strlen (modify_target[j].str)
3667 + strlen (spec_machine));
3670 int made_addition = 0;
3672 is_modify_target_name = 1;
3673 for (p = spec_machine, q = new_name; *p != 0; )
3675 if (modify_target[j].add_del == DELETE
3676 && (! strncmp (q, modify_target[j].str,
3677 strlen (modify_target[j].str))))
3678 p += strlen (modify_target[j].str);
3679 else if (modify_target[j].add_del == ADD
3680 && ! made_addition && *p == '-')
3682 for (r = modify_target[j].str; *r != 0; )
3690 spec_machine = new_name;
3693 if (is_modify_target_name)
3699 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
3700 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
3701 else if (WORD_SWITCH_TAKES_ARG (p))
3702 i += WORD_SWITCH_TAKES_ARG (p);
3712 if (have_c && have_o && lang_n_infiles > 1)
3713 fatal ("cannot specify -o with -c or -S and multiple compilations");
3715 /* Set up the search paths before we go looking for config files. */
3717 /* These come before the md prefixes so that we will find gcc's subcommands
3718 (such as cpp) rather than those of the host system. */
3719 /* Use 2 as fourth arg meaning try just the machine as a suffix,
3720 as well as trying the machine and the version. */
3722 add_prefix (&exec_prefixes, standard_exec_prefix, "GCC",
3723 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3724 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3725 PREFIX_PRIORITY_LAST, 2, warn_std_ptr);
3726 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS",
3727 PREFIX_PRIORITY_LAST, 2, warn_std_ptr);
3730 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3731 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3732 add_prefix (&startfile_prefixes, standard_exec_prefix_1, "BINUTILS",
3733 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3735 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3736 dir_separator_str, NULL);
3738 /* If tooldir is relative, base it on exec_prefixes. A relative
3739 tooldir lets us move the installed tree as a unit.
3741 If GCC_EXEC_PREFIX is defined, then we want to add two relative
3742 directories, so that we can search both the user specified directory
3743 and the standard place. */
3745 if (!IS_ABSOLUTE_PATHNAME (tooldir_prefix))
3747 if (gcc_exec_prefix)
3749 char *gcc_exec_tooldir_prefix
3750 = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
3751 spec_version, dir_separator_str, tooldir_prefix, NULL);
3753 add_prefix (&exec_prefixes,
3754 concat (gcc_exec_tooldir_prefix, "bin",
3755 dir_separator_str, NULL),
3756 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
3757 add_prefix (&startfile_prefixes,
3758 concat (gcc_exec_tooldir_prefix, "lib",
3759 dir_separator_str, NULL),
3760 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
3763 tooldir_prefix = concat (standard_exec_prefix, spec_machine,
3764 dir_separator_str, spec_version,
3765 dir_separator_str, tooldir_prefix, NULL);
3768 add_prefix (&exec_prefixes,
3769 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3770 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
3771 add_prefix (&startfile_prefixes,
3772 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3773 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
3775 /* More prefixes are enabled in main, after we read the specs file
3776 and determine whether this is cross-compilation or not. */
3778 /* Then create the space for the vectors and scan again. */
3780 switches = ((struct switchstr *)
3781 xmalloc ((n_switches + 1) * sizeof (struct switchstr)));
3782 infiles = (struct infile *) xmalloc ((n_infiles + 1) * sizeof (struct infile));
3785 last_language_n_infiles = -1;
3787 /* This, time, copy the text of each switch and store a pointer
3788 to the copy in the vector of switches.
3789 Store all the infiles in their vector. */
3791 for (i = 1; i < argc; i++)
3793 /* Just skip the switches that were handled by the preceding loop. */
3794 #ifdef MODIFY_TARGET_NAME
3795 is_modify_target_name = 0;
3797 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3798 if (! strcmp (argv[i], modify_target[j].sw))
3799 is_modify_target_name = 1;
3801 if (is_modify_target_name)
3805 if (! strncmp (argv[i], "-Wa,", 4))
3807 else if (! strncmp (argv[i], "-Wp,", 4))
3809 else if (! strcmp (argv[i], "-pass-exit-codes"))
3811 else if (! strcmp (argv[i], "-print-search-dirs"))
3813 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3815 else if (! strncmp (argv[i], "-print-file-name=", 17))
3817 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3819 else if (! strcmp (argv[i], "-print-multi-lib"))
3821 else if (! strcmp (argv[i], "-print-multi-directory"))
3823 else if (! strcmp (argv[i], "-ftarget-help"))
3825 else if (! strcmp (argv[i], "-fhelp"))
3827 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3829 /* Compensate for the +e options to the C++ front-end;
3830 they're there simply for cfront call-compatibility. We do
3831 some magic in default_compilers to pass them down properly.
3832 Note we deliberately start at the `+' here, to avoid passing
3833 -e0 or -e1 down into the linker. */
3834 switches[n_switches].part1 = &argv[i][0];
3835 switches[n_switches].args = 0;
3836 switches[n_switches].live_cond = SWITCH_OK;
3837 switches[n_switches].validated = 0;
3840 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3843 /* Split the argument at commas. */
3845 for (j = 4; argv[i][j]; j++)
3846 if (argv[i][j] == ',')
3848 infiles[n_infiles].language = "*";
3849 infiles[n_infiles++].name
3850 = save_string (argv[i] + prev, j - prev);
3853 /* Record the part after the last comma. */
3854 infiles[n_infiles].language = "*";
3855 infiles[n_infiles++].name = argv[i] + prev;
3857 else if (strcmp (argv[i], "-Xlinker") == 0)
3859 infiles[n_infiles].language = "*";
3860 infiles[n_infiles++].name = argv[++i];
3862 else if (strcmp (argv[i], "-l") == 0)
3863 { /* POSIX allows separation of -l and the lib arg;
3864 canonicalize by concatenating -l with its arg */
3865 infiles[n_infiles].language = "*";
3866 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL);
3868 else if (strncmp (argv[i], "-l", 2) == 0)
3870 infiles[n_infiles].language = "*";
3871 infiles[n_infiles++].name = argv[i];
3873 else if (strcmp (argv[i], "-specs") == 0)
3875 else if (strncmp (argv[i], "-specs=", 7) == 0)
3877 else if (strcmp (argv[i], "-time") == 0)
3879 else if ((save_temps_flag || report_times)
3880 && strcmp (argv[i], "-pipe") == 0)
3882 /* -save-temps overrides -pipe, so that temp files are produced */
3883 if (save_temps_flag)
3884 error ("warning: -pipe ignored because -save-temps specified");
3885 /* -time overrides -pipe because we can't get correct stats when
3886 multiple children are running at once. */
3887 else if (report_times)
3888 error ("warning: -pipe ignored because -time specified");
3890 else if (strcmp (argv[i], "-###") == 0)
3892 else if (argv[i][0] == '-' && argv[i][1] != 0)
3894 const char *p = &argv[i][1];
3899 if (p[1] == 0 && i + 1 == argc)
3900 fatal ("argument to `-x' is missing");
3902 spec_lang = argv[++i];
3905 if (! strcmp (spec_lang, "none"))
3906 /* Suppress the warning if -xnone comes after the last input
3907 file, because alternate command interfaces like g++ might
3908 find it useful to place -xnone after each input file. */
3911 last_language_n_infiles = n_infiles;
3914 switches[n_switches].part1 = p;
3915 /* Deal with option arguments in separate argv elements. */
3916 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
3917 || WORD_SWITCH_TAKES_ARG (p))
3920 int n_args = WORD_SWITCH_TAKES_ARG (p);
3924 /* Count only the option arguments in separate argv elements. */
3925 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
3927 if (i + n_args >= argc)
3928 fatal ("argument to `-%s' is missing", p);
3929 switches[n_switches].args
3930 = (const char **) xmalloc ((n_args + 1) * sizeof(const char *));
3932 switches[n_switches].args[j++] = argv[++i];
3933 /* Null-terminate the vector. */
3934 switches[n_switches].args[j] = 0;
3936 else if (strchr (switches_need_spaces, c))
3938 /* On some systems, ld cannot handle some options without
3939 a space. So split the option from its argument. */
3940 char *part1 = (char *) xmalloc (2);
3944 switches[n_switches].part1 = part1;
3945 switches[n_switches].args
3946 = (const char **) xmalloc (2 * sizeof (const char *));
3947 switches[n_switches].args[0] = xstrdup (p+1);
3948 switches[n_switches].args[1] = 0;
3951 switches[n_switches].args = 0;
3953 switches[n_switches].live_cond = SWITCH_OK;
3954 switches[n_switches].validated = 0;
3955 switches[n_switches].ordering = 0;
3956 /* These are always valid, since gcc.c itself understands it. */
3957 if (!strcmp (p, "save-temps")
3958 || !strcmp (p, "static-libgcc")
3959 || !strcmp (p, "shared-libgcc"))
3960 switches[n_switches].validated = 1;
3963 char ch = switches[n_switches].part1[0];
3964 if (ch == 'b' || ch == 'B')
3965 switches[n_switches].validated = 1;
3971 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3972 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
3975 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
3977 perror_with_name (argv[i]);
3982 infiles[n_infiles].language = spec_lang;
3983 infiles[n_infiles++].name = argv[i];
3988 if (n_infiles == last_language_n_infiles && spec_lang != 0)
3989 error ("warning: `-x %s' after last input file has no effect", spec_lang);
3991 /* Ensure we only invoke each subprocess once. */
3992 if (target_help_flag || print_help_list)
3996 /* Create a dummy input file, so that we can pass --target-help on to
3997 the various sub-processes. */
3998 infiles[0].language = "c";
3999 infiles[0].name = "help-dummy";
4001 if (target_help_flag)
4003 switches[n_switches].part1 = "--target-help";
4004 switches[n_switches].args = 0;
4005 switches[n_switches].live_cond = SWITCH_OK;
4006 switches[n_switches].validated = 0;
4011 if (print_help_list)
4013 switches[n_switches].part1 = "--help";
4014 switches[n_switches].args = 0;
4015 switches[n_switches].live_cond = SWITCH_OK;
4016 switches[n_switches].validated = 0;
4022 switches[n_switches].part1 = 0;
4023 infiles[n_infiles].name = 0;
4026 /* Store switches not filtered out by %{<S} in spec in COLLECT_GCC_OPTIONS
4027 and place that in the environment. */
4030 set_collect_gcc_options ()
4035 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4037 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4038 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4041 for (i = 0; (int) i < n_switches; i++)
4043 const char *const *args;
4046 obstack_grow (&collect_obstack, " ", 1);
4050 /* Ignore elided switches. */
4051 if (switches[i].live_cond == SWITCH_IGNORE)
4054 obstack_grow (&collect_obstack, "'-", 2);
4055 q = switches[i].part1;
4056 while ((p = strchr (q, '\'')))
4058 obstack_grow (&collect_obstack, q, p - q);
4059 obstack_grow (&collect_obstack, "'\\''", 4);
4062 obstack_grow (&collect_obstack, q, strlen (q));
4063 obstack_grow (&collect_obstack, "'", 1);
4065 for (args = switches[i].args; args && *args; args++)
4067 obstack_grow (&collect_obstack, " '", 2);
4069 while ((p = strchr (q, '\'')))
4071 obstack_grow (&collect_obstack, q, p - q);
4072 obstack_grow (&collect_obstack, "'\\''", 4);
4075 obstack_grow (&collect_obstack, q, strlen (q));
4076 obstack_grow (&collect_obstack, "'", 1);
4079 obstack_grow (&collect_obstack, "\0", 1);
4080 putenv (obstack_finish (&collect_obstack));
4083 /* Process a spec string, accumulating and running commands. */
4085 /* These variables describe the input file name.
4086 input_file_number is the index on outfiles of this file,
4087 so that the output file name can be stored for later use by %o.
4088 input_basename is the start of the part of the input file
4089 sans all directory names, and basename_length is the number
4090 of characters starting there excluding the suffix .c or whatever. */
4092 const char *input_filename;
4093 static int input_file_number;
4094 size_t input_filename_length;
4095 static int basename_length;
4096 static int suffixed_basename_length;
4097 static const char *input_basename;
4098 static const char *input_suffix;
4099 static struct stat input_stat;
4100 static int input_stat_set;
4102 /* The compiler used to process the current input file. */
4103 static struct compiler *input_file_compiler;
4105 /* These are variables used within do_spec and do_spec_1. */
4107 /* Nonzero if an arg has been started and not yet terminated
4108 (with space, tab or newline). */
4109 static int arg_going;
4111 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4112 is a temporary file name. */
4113 static int delete_this_arg;
4115 /* Nonzero means %w has been seen; the next arg to be terminated
4116 is the output file name of this compilation. */
4117 static int this_is_output_file;
4119 /* Nonzero means %s has been seen; the next arg to be terminated
4120 is the name of a library file and we should try the standard
4121 search dirs for it. */
4122 static int this_is_library_file;
4124 /* Nonzero means that the input of this command is coming from a pipe. */
4125 static int input_from_pipe;
4127 /* Nonnull means substitute this for any suffix when outputting a switches
4129 static const char *suffix_subst;
4131 /* Process the spec SPEC and run the commands specified therein.
4132 Returns 0 if the spec is successfully processed; -1 if failed. */
4142 delete_this_arg = 0;
4143 this_is_output_file = 0;
4144 this_is_library_file = 0;
4145 input_from_pipe = 0;
4146 suffix_subst = NULL;
4148 value = do_spec_1 (spec, 0, NULL);
4150 /* Force out any unfinished command.
4151 If -pipe, this forces out the last command if it ended in `|'. */
4154 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4157 set_collect_gcc_options ();
4159 if (argbuf_index > 0)
4166 /* Process the sub-spec SPEC as a portion of a larger spec.
4167 This is like processing a whole spec except that we do
4168 not initialize at the beginning and we do not supply a
4169 newline by default at the end.
4170 INSWITCH nonzero means don't process %-sequences in SPEC;
4171 in this case, % is treated as an ordinary character.
4172 This is used while substituting switches.
4173 INSWITCH nonzero also causes SPC not to terminate an argument.
4175 Value is zero unless a line was finished
4176 and the command on that line reported an error. */
4179 do_spec_1 (spec, inswitch, soft_matched_part)
4182 const char *soft_matched_part;
4184 const char *p = spec;
4191 /* If substituting a switch, treat all chars like letters.
4192 Otherwise, NL, SPC, TAB and % are special. */
4193 switch (inswitch ? 'a' : c)
4196 /* End of line: finish any pending argument,
4197 then run the pending command if one has been started. */
4200 obstack_1grow (&obstack, 0);
4201 string = obstack_finish (&obstack);
4202 if (this_is_library_file)
4203 string = find_file (string);
4204 store_arg (string, delete_this_arg, this_is_output_file);
4205 if (this_is_output_file)
4206 outfiles[input_file_number] = string;
4210 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4212 for (i = 0; i < n_switches; i++)
4213 if (!strcmp (switches[i].part1, "pipe"))
4216 /* A `|' before the newline means use a pipe here,
4217 but only if -pipe was specified.
4218 Otherwise, execute now and don't pass the `|' as an arg. */
4221 input_from_pipe = 1;
4222 switches[i].validated = 1;
4229 set_collect_gcc_options ();
4231 if (argbuf_index > 0)
4237 /* Reinitialize for a new command, and for a new argument. */
4240 delete_this_arg = 0;
4241 this_is_output_file = 0;
4242 this_is_library_file = 0;
4243 input_from_pipe = 0;
4247 /* End any pending argument. */
4250 obstack_1grow (&obstack, 0);
4251 string = obstack_finish (&obstack);
4252 if (this_is_library_file)
4253 string = find_file (string);
4254 store_arg (string, delete_this_arg, this_is_output_file);
4255 if (this_is_output_file)
4256 outfiles[input_file_number] = string;
4260 obstack_1grow (&obstack, c);
4266 /* Space or tab ends an argument if one is pending. */
4269 obstack_1grow (&obstack, 0);
4270 string = obstack_finish (&obstack);
4271 if (this_is_library_file)
4272 string = find_file (string);
4273 store_arg (string, delete_this_arg, this_is_output_file);
4274 if (this_is_output_file)
4275 outfiles[input_file_number] = string;
4277 /* Reinitialize for a new argument. */
4279 delete_this_arg = 0;
4280 this_is_output_file = 0;
4281 this_is_library_file = 0;
4288 fatal ("invalid specification! Bug in cc");
4291 obstack_grow (&obstack, input_basename, basename_length);
4296 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4301 delete_this_arg = 2;
4304 /* Dump out the directories specified with LIBRARY_PATH,
4305 followed by the absolute directories
4306 that we search for startfiles. */
4309 struct prefix_list *pl = startfile_prefixes.plist;
4310 size_t bufsize = 100;
4311 char *buffer = (char *) xmalloc (bufsize);
4314 for (; pl; pl = pl->next)
4316 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4317 /* Used on systems which record the specified -L dirs
4318 and use them to search for dynamic linking. */
4319 /* Relative directories always come from -B,
4320 and it is better not to use them for searching
4321 at run time. In particular, stage1 loses. */
4322 if (!IS_ABSOLUTE_PATHNAME (pl->prefix))
4325 /* Try subdirectory if there is one. */
4326 if (multilib_dir != NULL)
4330 if (strlen (pl->prefix) + strlen (machine_suffix)
4332 bufsize = (strlen (pl->prefix)
4333 + strlen (machine_suffix)) * 2 + 1;
4334 buffer = (char *) xrealloc (buffer, bufsize);
4335 strcpy (buffer, pl->prefix);
4336 strcat (buffer, machine_suffix);
4337 if (is_directory (buffer, multilib_dir, 1))
4339 do_spec_1 ("-L", 0, NULL);
4340 #ifdef SPACE_AFTER_L_OPTION
4341 do_spec_1 (" ", 0, NULL);
4343 do_spec_1 (buffer, 1, NULL);
4344 do_spec_1 (multilib_dir, 1, NULL);
4345 /* Make this a separate argument. */
4346 do_spec_1 (" ", 0, NULL);
4349 if (!pl->require_machine_suffix)
4351 if (is_directory (pl->prefix, multilib_dir, 1))
4353 do_spec_1 ("-L", 0, NULL);
4354 #ifdef SPACE_AFTER_L_OPTION
4355 do_spec_1 (" ", 0, NULL);
4357 do_spec_1 (pl->prefix, 1, NULL);
4358 do_spec_1 (multilib_dir, 1, NULL);
4359 /* Make this a separate argument. */
4360 do_spec_1 (" ", 0, NULL);
4366 if (is_directory (pl->prefix, machine_suffix, 1))
4368 do_spec_1 ("-L", 0, NULL);
4369 #ifdef SPACE_AFTER_L_OPTION
4370 do_spec_1 (" ", 0, NULL);
4372 do_spec_1 (pl->prefix, 1, NULL);
4373 /* Remove slash from machine_suffix. */
4374 if (strlen (machine_suffix) >= bufsize)
4375 bufsize = strlen (machine_suffix) * 2 + 1;
4376 buffer = (char *) xrealloc (buffer, bufsize);
4377 strcpy (buffer, machine_suffix);
4378 idx = strlen (buffer);
4379 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4380 buffer[idx - 1] = 0;
4381 do_spec_1 (buffer, 1, NULL);
4382 /* Make this a separate argument. */
4383 do_spec_1 (" ", 0, NULL);
4386 if (!pl->require_machine_suffix)
4388 if (is_directory (pl->prefix, "", 1))
4390 do_spec_1 ("-L", 0, NULL);
4391 #ifdef SPACE_AFTER_L_OPTION
4392 do_spec_1 (" ", 0, NULL);
4394 /* Remove slash from pl->prefix. */
4395 if (strlen (pl->prefix) >= bufsize)
4396 bufsize = strlen (pl->prefix) * 2 + 1;
4397 buffer = (char *) xrealloc (buffer, bufsize);
4398 strcpy (buffer, pl->prefix);
4399 idx = strlen (buffer);
4400 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4401 buffer[idx - 1] = 0;
4402 do_spec_1 (buffer, 1, NULL);
4403 /* Make this a separate argument. */
4404 do_spec_1 (" ", 0, NULL);
4413 /* %efoo means report an error with `foo' as error message
4414 and don't execute any more commands for this file. */
4418 while (*p != 0 && *p != '\n')
4420 buf = (char *) alloca (p - q + 1);
4421 strncpy (buf, q, p - q);
4428 /* %nfoo means report an notice with `foo' on stderr. */
4432 while (*p != 0 && *p != '\n')
4434 buf = (char *) alloca (p - q + 1);
4435 strncpy (buf, q, p - q);
4437 notice ("%s\n", buf);
4447 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is defined,
4448 and it is not a directory, and it is writable, use it.
4449 Otherwise, fall through and treat this like any other
4452 if ((!save_temps_flag)
4453 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4454 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4456 obstack_grow (&obstack, HOST_BIT_BUCKET,
4457 strlen (HOST_BIT_BUCKET));
4458 delete_this_arg = 0;
4467 struct temp_name *t;
4469 const char *suffix = p;
4470 char *saved_suffix = NULL;
4472 while (*p == '.' || ISALPHA ((unsigned char) *p))
4474 suffix_length = p - suffix;
4475 if (p[0] == '%' && p[1] == 'O')
4478 /* We don't support extra suffix characters after %O. */
4479 if (*p == '.' || ISALPHA ((unsigned char) *p))
4481 if (suffix_length == 0)
4482 suffix = TARGET_OBJECT_SUFFIX;
4486 = (char *) xmalloc (suffix_length
4487 + strlen (TARGET_OBJECT_SUFFIX));
4488 strncpy (saved_suffix, suffix, suffix_length);
4489 strcpy (saved_suffix + suffix_length,
4490 TARGET_OBJECT_SUFFIX);
4492 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4495 /* If the input_filename has the same suffix specified
4496 for the %g, %u, or %U, and -save-temps is specified,
4497 we could end up using that file as an intermediate
4498 thus clobbering the user's source file (.e.g.,
4499 gcc -save-temps foo.s would clobber foo.s with the
4500 output of cpp0). So check for this condition and
4501 generate a temp file as the intermediate. */
4503 if (save_temps_flag)
4505 temp_filename_length = basename_length + suffix_length;
4506 temp_filename = alloca (temp_filename_length + 1);
4507 strncpy ((char *) temp_filename, input_basename, basename_length);
4508 strncpy ((char *) temp_filename + basename_length, suffix,
4510 *((char *) temp_filename + temp_filename_length) = '\0';
4511 if (strcmp (temp_filename, input_filename) != 0)
4513 struct stat st_temp;
4515 /* Note, set_input() resets input_stat_set to 0. */
4516 if (input_stat_set == 0)
4518 input_stat_set = stat (input_filename, &input_stat);
4519 if (input_stat_set >= 0)
4523 /* If we have the stat for the input_filename
4524 and we can do the stat for the temp_filename
4525 then the they could still refer to the same
4526 file if st_dev/st_ino's are the same. */
4528 if (input_stat_set != 1
4529 || stat (temp_filename, &st_temp) < 0
4530 || input_stat.st_dev != st_temp.st_dev
4531 || input_stat.st_ino != st_temp.st_ino)
4533 temp_filename = save_string (temp_filename,
4534 temp_filename_length + 1);
4535 obstack_grow (&obstack, temp_filename,
4536 temp_filename_length);
4543 /* See if we already have an association of %g/%u/%U and
4545 for (t = temp_names; t; t = t->next)
4546 if (t->length == suffix_length
4547 && strncmp (t->suffix, suffix, suffix_length) == 0
4548 && t->unique == (c != 'g'))
4551 /* Make a new association if needed. %u and %j
4553 if (t == 0 || c == 'u' || c == 'j')
4557 t = (struct temp_name *) xmalloc (sizeof (struct temp_name));
4558 t->next = temp_names;
4561 t->length = suffix_length;
4564 t->suffix = saved_suffix;
4565 saved_suffix = NULL;
4568 t->suffix = save_string (suffix, suffix_length);
4569 t->unique = (c != 'g');
4570 temp_filename = make_temp_file (t->suffix);
4571 temp_filename_length = strlen (temp_filename);
4572 t->filename = temp_filename;
4573 t->filename_length = temp_filename_length;
4577 free (saved_suffix);
4579 obstack_grow (&obstack, t->filename, t->filename_length);
4580 delete_this_arg = 1;
4586 obstack_grow (&obstack, input_filename, input_filename_length);
4592 struct prefix_list *pl = include_prefixes.plist;
4594 if (gcc_exec_prefix)
4596 do_spec_1 ("-iprefix", 1, NULL);
4597 /* Make this a separate argument. */
4598 do_spec_1 (" ", 0, NULL);
4599 do_spec_1 (gcc_exec_prefix, 1, NULL);
4600 do_spec_1 (" ", 0, NULL);
4603 for (; pl; pl = pl->next)
4605 do_spec_1 ("-isystem", 1, NULL);
4606 /* Make this a separate argument. */
4607 do_spec_1 (" ", 0, NULL);
4608 do_spec_1 (pl->prefix, 1, NULL);
4609 do_spec_1 (" ", 0, NULL);
4616 int max = n_infiles;
4617 max += lang_specific_extra_outfiles;
4619 for (i = 0; i < max; i++)
4621 store_arg (outfiles[i], 0, 0);
4626 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4631 this_is_library_file = 1;
4635 this_is_output_file = 1;
4640 int cur_index = argbuf_index;
4641 /* Handle the {...} following the %W. */
4644 p = handle_braces (p + 1);
4647 /* If any args were output, mark the last one for deletion
4649 if (argbuf_index != cur_index)
4650 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
4654 /* %x{OPTION} records OPTION for %X to output. */
4660 /* Skip past the option value and make a copy. */
4665 string = save_string (p1 + 1, p - p1 - 2);
4667 /* See if we already recorded this option. */
4668 for (i = 0; i < n_linker_options; i++)
4669 if (! strcmp (string, linker_options[i]))
4675 /* This option is new; add it. */
4676 add_linker_option (string, strlen (string));
4680 /* Dump out the options accumulated previously using %x. */
4682 for (i = 0; i < n_linker_options; i++)
4684 do_spec_1 (linker_options[i], 1, NULL);
4685 /* Make each accumulated option a separate argument. */
4686 do_spec_1 (" ", 0, NULL);
4690 /* Dump out the options accumulated previously using -Wa,. */
4692 for (i = 0; i < n_assembler_options; i++)
4694 do_spec_1 (assembler_options[i], 1, NULL);
4695 /* Make each accumulated option a separate argument. */
4696 do_spec_1 (" ", 0, NULL);
4700 /* Dump out the options accumulated previously using -Wp,. */
4702 for (i = 0; i < n_preprocessor_options; i++)
4704 do_spec_1 (preprocessor_options[i], 1, NULL);
4705 /* Make each accumulated option a separate argument. */
4706 do_spec_1 (" ", 0, NULL);
4710 /* Here are digits and numbers that just process
4711 a certain constant string as a spec. */
4714 value = do_spec_1 (cc1_spec, 0, NULL);
4720 value = do_spec_1 (cc1plus_spec, 0, NULL);
4726 value = do_spec_1 (asm_spec, 0, NULL);
4732 value = do_spec_1 (asm_final_spec, 0, NULL);
4739 const char *const spec
4740 = (input_file_compiler->cpp_spec
4741 ? input_file_compiler->cpp_spec
4743 value = do_spec_1 (spec, 0, NULL);
4750 value = do_spec_1 (endfile_spec, 0, NULL);
4756 value = do_spec_1 (link_spec, 0, NULL);
4762 value = do_spec_1 (lib_spec, 0, NULL);
4768 value = do_spec_1 (libgcc_spec, 0, NULL);
4774 if (multilib_dir && strcmp (multilib_dir, ".") != 0)
4780 len = strlen (multilib_dir);
4781 obstack_blank (&obstack, len + 1);
4782 p = obstack_next_free (&obstack) - (len + 1);
4785 for (q = multilib_dir; *q ; ++q, ++p)
4786 *p = (IS_DIR_SEPARATOR (*q) ? '_' : *q);
4792 char *x = (char *) alloca (strlen (cpp_predefines) + 1);
4796 /* Copy all of the -D options in CPP_PREDEFINES into BUF. */
4800 if (! strncmp (y, "-D", 2))
4801 /* Copy the whole option. */
4802 while (*y && *y != ' ' && *y != '\t')
4804 else if (*y == ' ' || *y == '\t')
4805 /* Copy whitespace to the result. */
4807 /* Don't copy other options. */
4814 value = do_spec_1 (buf, 0, NULL);
4822 char *x = (char *) alloca (strlen (cpp_predefines) * 4 + 1);
4826 /* Copy all of CPP_PREDEFINES into BUF,
4827 but force them all into the reserved name space if they
4828 aren't already there. The reserved name space is all
4829 identifiers beginning with two underscores or with one
4830 underscore and a capital letter. We do the forcing by
4831 adding up to two underscores to the beginning and end
4832 of each symbol. e.g. mips, _mips, mips_, and _mips_ all
4837 if (! strncmp (y, "-D", 2))
4846 && ! ISUPPER ((unsigned char) *(y + 1))))
4848 /* Stick __ at front of macro name. */
4852 /* Arrange to stick __ at the end as well. */
4856 /* Copy the macro name. */
4857 while (*y && *y != '=' && *y != ' ' && *y != '\t')
4870 /* Copy the value given, if any. */
4871 while (*y && *y != ' ' && *y != '\t')
4874 else if (*y == ' ' || *y == '\t')
4875 /* Copy whitespace to the result. */
4877 /* Don't copy -A options */
4883 /* Copy all of CPP_PREDEFINES into BUF,
4884 but put __ after every -D. */
4888 if (! strncmp (y, "-D", 2))
4894 && ! ISUPPER ((unsigned char) *(y + 1))))
4896 /* Stick -D__ at front of macro name. */
4903 /* Copy the macro name. */
4904 while (*y && *y != '=' && *y != ' ' && *y != '\t')
4907 /* Copy the value given, if any. */
4908 while (*y && *y != ' ' && *y != '\t')
4913 /* Do not copy this macro - we have just done it before */
4914 while (*y && *y != ' ' && *y != '\t')
4918 else if (*y == ' ' || *y == '\t')
4919 /* Copy whitespace to the result. */
4921 /* Don't copy -A options. */
4927 /* Copy all of the -A options in CPP_PREDEFINES into BUF. */
4931 if (! strncmp (y, "-A", 2))
4932 /* Copy the whole option. */
4933 while (*y && *y != ' ' && *y != '\t')
4935 else if (*y == ' ' || *y == '\t')
4936 /* Copy whitespace to the result. */
4938 /* Don't copy other options. */
4945 value = do_spec_1 (buf, 0, NULL);
4952 value = do_spec_1 (startfile_spec, 0, NULL);
4957 /* Here we define characters other than letters and digits. */
4960 p = handle_braces (p);
4966 obstack_1grow (&obstack, '%');
4973 while (p[len] && p[len] != ' ' && p[len] != '%')
4975 suffix_subst = save_string (p - 1, len + 1);
4981 if (soft_matched_part)
4983 do_spec_1 (soft_matched_part, 1, NULL);
4984 do_spec_1 (" ", 0, NULL);
4987 /* Catch the case where a spec string contains something like
4988 '%{foo:%*}'. ie there is no * in the pattern on the left
4989 hand side of the :. */
4990 error ("spec failure: '%%*' has not been initialized by pattern match");
4993 /* Process a string found as the value of a spec given by name.
4994 This feature allows individual machine descriptions
4995 to add and use their own specs.
4996 %[...] modifies -D options the way %P does;
4997 %(...) uses the spec unmodified. */
4999 error ("warning: use of obsolete %%[ operator in specs");
5002 const char *name = p;
5003 struct spec_list *sl;
5006 /* The string after the S/P is the name of a spec that is to be
5008 while (*p && *p != ')' && *p != ']')
5011 /* See if it's in the list. */
5012 for (len = p - name, sl = specs; sl; sl = sl->next)
5013 if (sl->name_len == len && !strncmp (sl->name, name, len))
5015 name = *(sl->ptr_spec);
5017 notice ("Processing spec %c%s%c, which is '%s'\n",
5018 c, sl->name, (c == '(') ? ')' : ']', name);
5027 value = do_spec_1 (name, 0, NULL);
5033 char *x = (char *) alloca (strlen (name) * 2 + 1);
5035 const char *y = name;
5038 /* Copy all of NAME into BUF, but put __ after
5039 every -D and at the end of each arg. */
5042 if (! strncmp (y, "-D", 2))
5053 && (*y == ' ' || *y == '\t' || *y == '='
5054 || *y == '}' || *y == 0))
5067 value = do_spec_1 (buf, 0, NULL);
5073 /* Discard the closing paren or bracket. */
5081 int c1 = *p++; /* Select first or second version number. */
5082 const char *v = compiler_version;
5084 static const char zeroc = '0';
5086 /* The format of the version string is
5087 ([^0-9]*-)?[0-9]+[.][0-9]+([.][0-9]+)?([- ].*)? */
5089 /* Ignore leading non-digits. i.e. "foo-" in "foo-2.7.2". */
5090 while (! ISDIGIT (*v))
5092 if (v > compiler_version && v[-1] != '-')
5095 /* If desired, advance to second version number. */
5098 /* Set V after the first period. */
5099 while (ISDIGIT (*v))
5106 /* If desired, advance to third version number.
5107 But don't complain if it's not present */
5110 /* Set V after the second period. */
5111 while (ISDIGIT (*v))
5113 if ((*v != 0) && (*v != ' ') && (*v != '.') && (*v != '-'))
5119 /* Set Q at the next period or at the end. */
5121 while (ISDIGIT (*q))
5123 if (*q != 0 && q > v && *q != ' ' && *q != '.' && *q != '-')
5127 /* Put that part into the command. */
5128 obstack_grow (&obstack, v, q - v);
5130 /* Default to "0" */
5131 obstack_grow (&obstack, &zeroc, 1);
5137 if (input_from_pipe)
5138 do_spec_1 ("-", 0, NULL);
5142 error ("spec failure: unrecognized spec option '%c'", c);
5148 /* Backslash: treat next character as ordinary. */
5153 /* Ordinary character: put it into the current argument. */
5154 obstack_1grow (&obstack, c);
5158 /* End of string. */
5162 /* Return 0 if we call do_spec_1 and that returns -1. */
5168 const char *filter, *body = NULL, *endbody = NULL;
5170 int true_once = 0; /* If, in %{a|b:d}, at least one of a,b was seen. */
5173 int include_blanks = 1;
5174 int elide_switch = 0;
5179 /* A '^' after the open-brace means to not give blanks before args. */
5186 /* A `|' after the open-brace means,
5187 if the test fails, output a single minus sign rather than nothing.
5188 This is used in %{|!pipe:...}. */
5195 /* A `<' after the open-brace means that the switch should be
5196 removed from the command-line. */
5202 negate = suffix = 0;
5205 /* A `!' after the open-brace negates the condition:
5206 succeed if the specified switch is not present. */
5210 /* A `.' after the open-brace means test against the current suffix. */
5219 if (elide_switch && (negate || pipe_p || suffix))
5221 /* It doesn't make sense to mix elision with other flags. We
5222 could fatal() here, but the standard seems to be to abort. */
5228 while (*p != ':' && *p != '}' && *p != '|' && *p != '&')
5231 if (*p == '|' && (pipe_p || ordered))
5236 if (*p != '}' && *p != '&')
5252 fatal ("mismatched braces in specs");
5258 body = p, endbody = p + 1;
5263 int found = (input_suffix != 0
5264 && (long) strlen (input_suffix) == (long) (p - filter)
5265 && strncmp (input_suffix, filter, p - filter) == 0);
5271 && do_spec_1 (save_string (body, endbody-body-1), 0, NULL) < 0)
5274 else if (p[-1] == '*' && (p[0] == '}' || p[0] == '&'))
5276 /* Substitute all matching switches as separate args. */
5279 for (i = 0; i < n_switches; i++)
5280 if (!strncmp (switches[i].part1, filter, p - 1 - filter)
5281 && check_live_switch (i, p - 1 - filter))
5285 switches[i].live_cond = SWITCH_IGNORE;
5286 switches[i].validated = 1;
5289 ordered = 1, switches[i].ordering = 1;
5294 /* Test for presence of the specified switch. */
5298 /* If name specified ends in *, as in {x*:...},
5299 check for %* and handle that case. */
5300 if (p[-1] == '*' && !negate)
5303 const char *r = body;
5305 /* First see whether we have %*. */
5309 if (*r == '%' && r[1] == '*')
5313 /* If we do, handle that case. */
5316 /* Substitute all matching switches as separate args.
5317 But do this by substituting for %*
5318 in the text that follows the colon. */
5320 unsigned hard_match_len = p - filter - 1;
5321 char *string = save_string (body, endbody - body - 1);
5323 for (i = 0; i < n_switches; i++)
5324 if (!strncmp (switches[i].part1, filter, hard_match_len)
5325 && check_live_switch (i, -1))
5327 do_spec_1 (string, 0, &switches[i].part1[hard_match_len]);
5328 /* Pass any arguments this switch has. */
5329 give_switch (i, 1, 1);
5330 suffix_subst = NULL;
5333 /* We didn't match. Try again. */
5340 /* If name specified ends in *, as in {x*:...},
5341 check for presence of any switch name starting with x. */
5344 for (i = 0; i < n_switches; i++)
5346 unsigned hard_match_len = p - filter - 1;
5348 if (!strncmp (switches[i].part1, filter, hard_match_len)
5349 && check_live_switch (i, hard_match_len))
5356 /* Otherwise, check for presence of exact name specified. */
5359 for (i = 0; i < n_switches; i++)
5361 if (!strncmp (switches[i].part1, filter, p - filter)
5362 && switches[i].part1[p - filter] == 0
5363 && check_live_switch (i, -1))
5371 /* If it is as desired (present for %{s...}, absent for %{!s...})
5372 then substitute either the switch or the specified
5373 conditional text. */
5374 if (present != negate)
5378 switches[i].live_cond = SWITCH_IGNORE;
5379 switches[i].validated = 1;
5381 else if (ordered || *p == '&')
5382 ordered = 1, switches[i].ordering = 1;
5384 give_switch (i, 0, include_blanks);
5386 /* Even if many alternatives are matched, only output once. */
5391 /* Here if a %{|...} conditional fails: output a minus sign,
5392 which means "standard output" or "standard input". */
5393 do_spec_1 ("-", 0, NULL);
5398 /* We didn't match; try again. */
5405 goto next_ampersand;
5411 /* Doing this set of switches later preserves their command-line
5412 ordering. This is needed for e.g. -U, -D and -A. */
5413 for (i = 0; i < n_switches; i++)
5414 if (switches[i].ordering == 1)
5416 switches[i].ordering = 0;
5417 give_switch (i, 0, include_blanks);
5420 /* Process the spec just once, regardless of match count. */
5423 if (do_spec_1 (save_string (body, endbody - body - 1),
5431 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5432 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5433 spec, or -1 if either exact match or %* is used.
5435 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5436 whose value does not begin with "no-" is obsoleted by the same value
5437 with the "no-", similarly for a switch with the "no-" prefix. */
5440 check_live_switch (switchnum, prefix_length)
5444 const char *name = switches[switchnum].part1;
5447 /* In the common case of {<at-most-one-letter>*}, a negating
5448 switch would always match, so ignore that case. We will just
5449 send the conflicting switches to the compiler phase. */
5450 if (prefix_length >= 0 && prefix_length <= 1)
5453 /* If we already processed this switch and determined if it was
5454 live or not, return our past determination. */
5455 if (switches[switchnum].live_cond != 0)
5456 return switches[switchnum].live_cond > 0;
5458 /* Now search for duplicate in a manner that depends on the name. */
5462 for (i = switchnum + 1; i < n_switches; i++)
5463 if (switches[i].part1[0] == 'O')
5465 switches[switchnum].validated = 1;
5466 switches[switchnum].live_cond = SWITCH_FALSE;
5471 case 'W': case 'f': case 'm':
5472 if (! strncmp (name + 1, "no-", 3))
5474 /* We have Xno-YYY, search for XYYY. */
5475 for (i = switchnum + 1; i < n_switches; i++)
5476 if (switches[i].part1[0] == name[0]
5477 && ! strcmp (&switches[i].part1[1], &name[4]))
5479 switches[switchnum].validated = 1;
5480 switches[switchnum].live_cond = SWITCH_FALSE;
5486 /* We have XYYY, search for Xno-YYY. */
5487 for (i = switchnum + 1; i < n_switches; i++)
5488 if (switches[i].part1[0] == name[0]
5489 && switches[i].part1[1] == 'n'
5490 && switches[i].part1[2] == 'o'
5491 && switches[i].part1[3] == '-'
5492 && !strcmp (&switches[i].part1[4], &name[1]))
5494 switches[switchnum].validated = 1;
5495 switches[switchnum].live_cond = SWITCH_FALSE;
5502 /* Otherwise the switch is live. */
5503 switches[switchnum].live_cond = SWITCH_LIVE;
5507 /* Pass a switch to the current accumulating command
5508 in the same form that we received it.
5509 SWITCHNUM identifies the switch; it is an index into
5510 the vector of switches gcc received, which is `switches'.
5511 This cannot fail since it never finishes a command line.
5513 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument.
5515 If INCLUDE_BLANKS is nonzero, then we include blanks before each argument
5519 give_switch (switchnum, omit_first_word, include_blanks)
5521 int omit_first_word;
5524 if (switches[switchnum].live_cond == SWITCH_IGNORE)
5527 if (!omit_first_word)
5529 do_spec_1 ("-", 0, NULL);
5530 do_spec_1 (switches[switchnum].part1, 1, NULL);
5533 if (switches[switchnum].args != 0)
5536 for (p = switches[switchnum].args; *p; p++)
5538 const char *arg = *p;
5541 do_spec_1 (" ", 0, NULL);
5544 unsigned length = strlen (arg);
5547 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5548 if (arg[length] == '.')
5550 ((char *)arg)[length] = 0;
5554 do_spec_1 (arg, 1, NULL);
5556 ((char *)arg)[length] = '.';
5557 do_spec_1 (suffix_subst, 1, NULL);
5560 do_spec_1 (arg, 1, NULL);
5564 do_spec_1 (" ", 0, NULL);
5565 switches[switchnum].validated = 1;
5568 /* Search for a file named NAME trying various prefixes including the
5569 user's -B prefix and some standard ones.
5570 Return the absolute file name found. If nothing is found, return NAME. */
5578 /* Try multilib_dir if it is defined. */
5579 if (multilib_dir != NULL)
5581 const char *const try = ACONCAT ((multilib_dir, dir_separator_str, name, NULL));
5583 newname = find_a_file (&startfile_prefixes, try, R_OK);
5585 /* If we don't find it in the multi library dir, then fall
5586 through and look for it in the normal places. */
5587 if (newname != NULL)
5591 newname = find_a_file (&startfile_prefixes, name, R_OK);
5592 return newname ? newname : name;
5595 /* Determine whether a directory exists. If LINKER, return 0 for
5596 certain fixed names not needed by the linker. If not LINKER, it is
5597 only important to return 0 if the host machine has a small ARG_MAX
5601 is_directory (path1, path2, linker)
5606 int len1 = strlen (path1);
5607 int len2 = strlen (path2);
5608 char *path = (char *) alloca (3 + len1 + len2);
5612 #ifndef SMALL_ARG_MAX
5617 /* Construct the path from the two parts. Ensure the string ends with "/.".
5618 The resulting path will be a directory even if the given path is a
5620 memcpy (path, path1, len1);
5621 memcpy (path + len1, path2, len2);
5622 cp = path + len1 + len2;
5623 if (!IS_DIR_SEPARATOR (cp[-1]))
5624 *cp++ = DIR_SEPARATOR;
5628 /* Exclude directories that the linker is known to search. */
5631 && strcmp (path, concat (dir_separator_str, "lib",
5632 dir_separator_str, ".", NULL)) == 0)
5634 && strcmp (path, concat (dir_separator_str, "usr",
5635 dir_separator_str, "lib",
5636 dir_separator_str, ".", NULL)) == 0)))
5639 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5642 /* Set up the various global variables to indicate that we're processing
5643 the input file named FILENAME. */
5646 set_input (filename)
5647 const char *filename;
5651 input_filename = filename;
5652 input_filename_length = strlen (input_filename);
5654 input_basename = input_filename;
5655 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
5656 /* Skip drive name so 'x:foo' is handled properly. */
5657 if (input_basename[1] == ':')
5658 input_basename += 2;
5660 for (p = input_basename; *p; p++)
5661 if (IS_DIR_SEPARATOR (*p))
5662 input_basename = p + 1;
5664 /* Find a suffix starting with the last period,
5665 and set basename_length to exclude that suffix. */
5666 basename_length = strlen (input_basename);
5667 suffixed_basename_length = basename_length;
5668 p = input_basename + basename_length;
5669 while (p != input_basename && *p != '.')
5671 if (*p == '.' && p != input_basename)
5673 basename_length = p - input_basename;
5674 input_suffix = p + 1;
5679 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5680 we will need to do a stat on the input_filename. The
5681 INPUT_STAT_SET signals that the stat is needed. */
5685 /* On fatal signals, delete all the temporary files. */
5688 fatal_error (signum)
5691 signal (signum, SIG_DFL);
5692 delete_failure_queue ();
5693 delete_temp_files ();
5694 /* Get the same signal again, this time not handled,
5695 so its normal effect occurs. */
5696 kill (getpid (), signum);
5699 extern int main PARAMS ((int, const char *const *));
5704 const char *const *argv;
5708 int linker_was_run = 0;
5709 char *explicit_link_files;
5712 struct user_specs *uptr;
5714 p = argv[0] + strlen (argv[0]);
5715 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
5719 xmalloc_set_program_name (programname);
5721 #ifdef GCC_DRIVER_HOST_INITIALIZATION
5722 /* Perform host dependent initialization when needed. */
5723 GCC_DRIVER_HOST_INITIALIZATION;
5726 gcc_init_libintl ();
5728 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
5729 signal (SIGINT, fatal_error);
5731 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
5732 signal (SIGHUP, fatal_error);
5734 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
5735 signal (SIGTERM, fatal_error);
5737 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
5738 signal (SIGPIPE, fatal_error);
5741 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
5742 receive the signal. A different setting is inheritable */
5743 signal (SIGCHLD, SIG_DFL);
5747 argbuf = (const char **) xmalloc (argbuf_length * sizeof (const char *));
5749 obstack_init (&obstack);
5751 /* Build multilib_select, et. al from the separate lines that make up each
5752 multilib selection. */
5754 const char *const *q = multilib_raw;
5757 obstack_init (&multilib_obstack);
5758 while ((p = *q++) != (char *) 0)
5759 obstack_grow (&multilib_obstack, p, strlen (p));
5761 obstack_1grow (&multilib_obstack, 0);
5762 multilib_select = obstack_finish (&multilib_obstack);
5764 q = multilib_matches_raw;
5765 while ((p = *q++) != (char *) 0)
5766 obstack_grow (&multilib_obstack, p, strlen (p));
5768 obstack_1grow (&multilib_obstack, 0);
5769 multilib_matches = obstack_finish (&multilib_obstack);
5771 q = multilib_exclusions_raw;
5772 while ((p = *q++) != (char *) 0)
5773 obstack_grow (&multilib_obstack, p, strlen (p));
5775 obstack_1grow (&multilib_obstack, 0);
5776 multilib_exclusions = obstack_finish (&multilib_obstack);
5779 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
5782 obstack_1grow (&multilib_obstack, ' ');
5783 obstack_grow (&multilib_obstack,
5784 multilib_defaults_raw[i],
5785 strlen (multilib_defaults_raw[i]));
5789 obstack_1grow (&multilib_obstack, 0);
5790 multilib_defaults = obstack_finish (&multilib_obstack);
5793 /* Set up to remember the pathname of gcc and any options
5794 needed for collect. We use argv[0] instead of programname because
5795 we need the complete pathname. */
5796 obstack_init (&collect_obstack);
5797 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
5798 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
5799 putenv (obstack_finish (&collect_obstack));
5801 #ifdef INIT_ENVIRONMENT
5802 /* Set up any other necessary machine specific environment variables. */
5803 putenv (INIT_ENVIRONMENT);
5806 /* Make a table of what switches there are (switches, n_switches).
5807 Make a table of specified input files (infiles, n_infiles).
5808 Decode switches that are handled locally. */
5810 process_command (argc, argv);
5812 /* Initialize the vector of specs to just the default.
5813 This means one element containing 0s, as a terminator. */
5815 compilers = (struct compiler *) xmalloc (sizeof default_compilers);
5816 memcpy ((char *) compilers, (char *) default_compilers,
5817 sizeof default_compilers);
5818 n_compilers = n_default_compilers;
5820 /* Read specs from a file if there is one. */
5822 machine_suffix = concat (spec_machine, dir_separator_str,
5823 spec_version, dir_separator_str, NULL);
5824 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
5826 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK);
5827 /* Read the specs file unless it is a default one. */
5828 if (specs_file != 0 && strcmp (specs_file, "specs"))
5829 read_specs (specs_file, TRUE);
5833 /* We need to check standard_exec_prefix/just_machine_suffix/specs
5834 for any override of as, ld and libraries. */
5835 specs_file = (char *) alloca (strlen (standard_exec_prefix)
5836 + strlen (just_machine_suffix)
5837 + sizeof ("specs"));
5839 strcpy (specs_file, standard_exec_prefix);
5840 strcat (specs_file, just_machine_suffix);
5841 strcat (specs_file, "specs");
5842 if (access (specs_file, R_OK) == 0)
5843 read_specs (specs_file, TRUE);
5845 /* If not cross-compiling, look for startfiles in the standard places. */
5846 if (*cross_compile == '0')
5848 if (*md_exec_prefix)
5850 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
5851 PREFIX_PRIORITY_LAST, 0, NULL);
5852 add_prefix (&startfile_prefixes, md_exec_prefix, "GCC",
5853 PREFIX_PRIORITY_LAST, 0, NULL);
5856 if (*md_startfile_prefix)
5857 add_prefix (&startfile_prefixes, md_startfile_prefix, "GCC",
5858 PREFIX_PRIORITY_LAST, 0, NULL);
5860 if (*md_startfile_prefix_1)
5861 add_prefix (&startfile_prefixes, md_startfile_prefix_1, "GCC",
5862 PREFIX_PRIORITY_LAST, 0, NULL);
5864 /* If standard_startfile_prefix is relative, base it on
5865 standard_exec_prefix. This lets us move the installed tree
5866 as a unit. If GCC_EXEC_PREFIX is defined, base
5867 standard_startfile_prefix on that as well. */
5868 if (IS_ABSOLUTE_PATHNAME (standard_startfile_prefix))
5869 add_prefix (&startfile_prefixes, standard_startfile_prefix, "BINUTILS",
5870 PREFIX_PRIORITY_LAST, 0, NULL);
5873 if (gcc_exec_prefix)
5874 add_prefix (&startfile_prefixes,
5875 concat (gcc_exec_prefix, machine_suffix,
5876 standard_startfile_prefix, NULL),
5877 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
5878 add_prefix (&startfile_prefixes,
5879 concat (standard_exec_prefix,
5881 standard_startfile_prefix, NULL),
5882 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
5885 add_prefix (&startfile_prefixes, standard_startfile_prefix_1,
5886 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
5887 add_prefix (&startfile_prefixes, standard_startfile_prefix_2,
5888 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
5889 #if 0 /* Can cause surprises, and one can use -B./ instead. */
5890 add_prefix (&startfile_prefixes, "./", NULL,
5891 PREFIX_PRIORITY_LAST, 1, NULL);
5896 if (!IS_ABSOLUTE_PATHNAME (standard_startfile_prefix)
5898 add_prefix (&startfile_prefixes,
5899 concat (gcc_exec_prefix, machine_suffix,
5900 standard_startfile_prefix, NULL),
5901 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
5904 /* Process any user specified specs in the order given on the command
5906 for (uptr = user_specs_head; uptr; uptr = uptr->next)
5908 char *filename = find_a_file (&startfile_prefixes, uptr->filename, R_OK);
5909 read_specs (filename ? filename : uptr->filename, FALSE);
5912 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
5913 if (gcc_exec_prefix)
5914 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
5915 spec_version, dir_separator_str, NULL);
5917 /* Now we have the specs.
5918 Set the `valid' bits for switches that match anything in any spec. */
5920 validate_all_switches ();
5922 /* Now that we have the switches and the specs, set
5923 the subdirectory based on the options. */
5924 set_multilib_dir ();
5926 /* Warn about any switches that no pass was interested in. */
5928 for (i = 0; (int) i < n_switches; i++)
5929 if (! switches[i].validated)
5930 error ("unrecognized option `-%s'", switches[i].part1);
5932 /* Obey some of the options. */
5934 if (print_search_dirs)
5936 printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix);
5937 printf (_("programs: %s\n"), build_search_list (&exec_prefixes, "", 0));
5938 printf (_("libraries: %s\n"), build_search_list (&startfile_prefixes, "", 0));
5942 if (print_file_name)
5944 printf ("%s\n", find_file (print_file_name));
5948 if (print_prog_name)
5950 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK);
5951 printf ("%s\n", (newname ? newname : print_prog_name));
5955 if (print_multi_lib)
5957 print_multilib_info ();
5961 if (print_multi_directory)
5963 if (multilib_dir == NULL)
5966 printf ("%s\n", multilib_dir);
5970 if (target_help_flag)
5972 /* Print if any target specific options. */
5974 /* We do not exit here. Instead we have created a fake input file
5975 called 'target-dummy' which needs to be compiled, and we pass this
5976 on to the various sub-processes, along with the --target-help
5980 if (print_help_list)
5986 printf (_("\nFor bug reporting instructions, please see:\n"));
5987 printf ("%s.\n", GCCBUGURL);
5992 /* We do not exit here. Instead we have created a fake input file
5993 called 'help-dummy' which needs to be compiled, and we pass this
5994 on the various sub-processes, along with the --help switch. */
6002 notice ("Configured with: %s\n", configuration_arguments);
6004 #ifdef THREAD_MODEL_SPEC
6005 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6006 but there's no point in doing all this processing just to get
6007 thread_model back. */
6008 obstack_init (&obstack);
6009 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6010 obstack_1grow (&obstack, '\0');
6011 thrmod = obstack_finish (&obstack);
6013 thrmod = thread_model;
6016 notice ("Thread model: %s\n", thrmod);
6018 /* compiler_version is truncated at the first space when initialized
6019 from version string, so truncate version_string at the first space
6020 before comparing. */
6021 for (n = 0; version_string[n]; n++)
6022 if (version_string[n] == ' ')
6025 if (! strncmp (version_string, compiler_version, n)
6026 && compiler_version[n] == 0)
6027 notice ("gcc version %s\n", version_string);
6029 notice ("gcc driver version %s executing gcc version %s\n",
6030 version_string, compiler_version);
6036 if (n_infiles == added_libraries)
6037 fatal ("no input files");
6039 /* Make a place to record the compiler output file names
6040 that correspond to the input files. */
6043 i += lang_specific_extra_outfiles;
6044 outfiles = (const char **) xcalloc (i, sizeof (char *));
6046 /* Record which files were specified explicitly as link input. */
6048 explicit_link_files = xcalloc (1, n_infiles);
6050 for (i = 0; (int) i < n_infiles; i++)
6052 int this_file_error = 0;
6054 /* Tell do_spec what to substitute for %i. */
6056 input_file_number = i;
6057 set_input (infiles[i].name);
6059 /* Use the same thing in %o, unless cp->spec says otherwise. */
6061 outfiles[i] = input_filename;
6063 /* Figure out which compiler from the file's suffix. */
6066 = lookup_compiler (infiles[i].name, input_filename_length,
6067 infiles[i].language);
6069 if (input_file_compiler)
6071 /* Ok, we found an applicable compiler. Run its spec. */
6073 if (input_file_compiler->spec[0] == '#')
6075 error ("%s: %s compiler not installed on this system",
6076 input_filename, &input_file_compiler->spec[1]);
6077 this_file_error = 1;
6081 value = do_spec (input_file_compiler->spec);
6083 this_file_error = 1;
6087 /* If this file's name does not contain a recognized suffix,
6088 record it as explicit linker input. */
6091 explicit_link_files[i] = 1;
6093 /* Clear the delete-on-failure queue, deleting the files in it
6094 if this compilation failed. */
6096 if (this_file_error)
6098 delete_failure_queue ();
6101 /* If this compilation succeeded, don't delete those files later. */
6102 clear_failure_queue ();
6105 /* Reset the output file name to the first input file name, for use
6106 with %b in LINK_SPEC on a target that prefers not to emit a.out
6109 set_input (infiles[0].name);
6111 if (error_count == 0)
6113 /* Make sure INPUT_FILE_NUMBER points to first available open
6115 input_file_number = n_infiles;
6116 if (lang_specific_pre_link ())
6120 /* Run ld to link all the compiler output files. */
6122 if (error_count == 0)
6124 int tmp = execution_count;
6126 /* We'll use ld if we can't find collect2. */
6127 if (! strcmp (linker_name_spec, "collect2"))
6129 char *s = find_a_file (&exec_prefixes, "collect2", X_OK);
6131 linker_name_spec = "ld";
6133 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6135 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH");
6136 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV);
6138 value = do_spec (link_command_spec);
6141 linker_was_run = (tmp != execution_count);
6144 /* If options said don't run linker,
6145 complain about input files to be given to the linker. */
6147 if (! linker_was_run && error_count == 0)
6148 for (i = 0; (int) i < n_infiles; i++)
6149 if (explicit_link_files[i])
6150 error ("%s: linker input file unused because linking not done",
6153 /* Delete some or all of the temporary files we made. */
6156 delete_failure_queue ();
6157 delete_temp_files ();
6159 if (print_help_list)
6161 printf (("\nFor bug reporting instructions, please see:\n"));
6162 printf ("%s\n", GCCBUGURL);
6165 return (signal_count != 0 ? 2
6166 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
6170 /* Find the proper compilation spec for the file name NAME,
6171 whose length is LENGTH. LANGUAGE is the specified language,
6172 or 0 if this file is to be passed to the linker. */
6174 static struct compiler *
6175 lookup_compiler (name, length, language)
6178 const char *language;
6180 struct compiler *cp;
6182 /* If this was specified by the user to be a linker input, indicate that. */
6183 if (language != 0 && language[0] == '*')
6186 /* Otherwise, look for the language, if one is spec'd. */
6189 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6190 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6193 error ("language %s not recognized", language);
6197 /* Look for a suffix. */
6198 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6200 if (/* The suffix `-' matches only the file name `-'. */
6201 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6202 || (strlen (cp->suffix) < length
6203 /* See if the suffix matches the end of NAME. */
6204 && !strcmp (cp->suffix,
6205 name + length - strlen (cp->suffix))
6210 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6211 /* look again, but case-insensitively this time. */
6213 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6215 if (/* The suffix `-' matches only the file name `-'. */
6216 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6217 || (strlen (cp->suffix) < length
6218 /* See if the suffix matches the end of NAME. */
6219 && ((!strcmp (cp->suffix,
6220 name + length - strlen (cp->suffix))
6221 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6222 && !strcasecmp (cp->suffix,
6223 name + length - strlen (cp->suffix)))
6229 if (cp >= compilers)
6231 if (cp->spec[0] != '@')
6232 /* A non-alias entry: return it. */
6235 /* An alias entry maps a suffix to a language.
6236 Search for the language; pass 0 for NAME and LENGTH
6237 to avoid infinite recursion if language not found. */
6238 return lookup_compiler (NULL, 0, cp->spec + 1);
6244 save_string (s, len)
6248 char *result = xmalloc (len + 1);
6250 memcpy (result, s, len);
6256 pfatal_with_name (name)
6259 perror_with_name (name);
6260 delete_temp_files ();
6265 perror_with_name (name)
6268 error ("%s: %s", name, xstrerror (errno));
6272 pfatal_pexecute (errmsg_fmt, errmsg_arg)
6273 const char *errmsg_fmt;
6274 const char *errmsg_arg;
6278 int save_errno = errno;
6280 /* Space for trailing '\0' is in %s. */
6281 char *msg = xmalloc (strlen (errmsg_fmt) + strlen (errmsg_arg));
6282 sprintf (msg, errmsg_fmt, errmsg_arg);
6288 pfatal_with_name (errmsg_fmt);
6291 /* Output an error message and exit */
6296 fatal ("internal gcc abort");
6299 /* Output an error message and exit */
6302 fatal VPARAMS ((const char *msgid, ...))
6304 VA_OPEN (ap, msgid);
6305 VA_FIXEDARG (ap, const char *, msgid);
6307 fprintf (stderr, "%s: ", programname);
6308 vfprintf (stderr, _(msgid), ap);
6310 fprintf (stderr, "\n");
6311 delete_temp_files ();
6316 error VPARAMS ((const char *msgid, ...))
6318 VA_OPEN (ap, msgid);
6319 VA_FIXEDARG (ap, const char *, msgid);
6321 fprintf (stderr, "%s: ", programname);
6322 vfprintf (stderr, _(msgid), ap);
6325 fprintf (stderr, "\n");
6329 notice VPARAMS ((const char *msgid, ...))
6331 VA_OPEN (ap, msgid);
6332 VA_FIXEDARG (ap, const char *, msgid);
6334 vfprintf (stderr, _(msgid), ap);
6339 validate_all_switches ()
6341 struct compiler *comp;
6344 struct spec_list *spec;
6346 for (comp = compilers; comp->spec; comp++)
6350 if (c == '%' && (*p == '{' || (*p == 'W' && *++p == '{')))
6351 /* We have a switch spec. */
6352 validate_switches (p + 1);
6355 /* Look through the linked list of specs read from the specs file. */
6356 for (spec = specs; spec; spec = spec->next)
6358 p = *(spec->ptr_spec);
6360 if (c == '%' && (*p == '{' || (*p == 'W' && *++p == '{')))
6361 /* We have a switch spec. */
6362 validate_switches (p + 1);
6365 p = link_command_spec;
6367 if (c == '%' && (*p == '{' || (*p == 'W' && *++p == '{')))
6368 /* We have a switch spec. */
6369 validate_switches (p + 1);
6372 /* Look at the switch-name that comes after START
6373 and mark as valid all supplied switches that match it. */
6376 validate_switches (start)
6379 const char *p = start;
6396 while (*p != ':' && *p != '}' && *p != '|' && *p != '&')
6401 else if (p[-1] == '*')
6403 /* Mark all matching switches as valid. */
6404 for (i = 0; i < n_switches; i++)
6405 if (!strncmp (switches[i].part1, filter, p - filter - 1))
6406 switches[i].validated = 1;
6410 /* Mark an exact matching switch as valid. */
6411 for (i = 0; i < n_switches; i++)
6413 if (!strncmp (switches[i].part1, filter, p - filter)
6414 && switches[i].part1[p - filter] == 0)
6415 switches[i].validated = 1;
6419 if (*p++ == '|' || p[-1] == '&')
6423 /* Check whether a particular argument was used. The first time we
6424 canonicalize the switches to keep only the ones we care about. */
6434 const char *replace;
6439 static struct mswitchstr *mswitches;
6440 static int n_mswitches;
6445 struct mswitchstr *matches;
6449 /* Break multilib_matches into the component strings of string
6450 and replacement string. */
6451 for (q = multilib_matches; *q != '\0'; q++)
6456 (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
6458 q = multilib_matches;
6468 matches[i].len = q - matches[i].str;
6470 matches[i].replace = ++q;
6471 while (*q != ';' && *q != '\0')
6477 matches[i].rep_len = q - matches[i].replace;
6483 /* Now build a list of the replacement string for switches that we care
6484 about. Make sure we allocate at least one entry. This prevents
6485 xmalloc from calling fatal, and prevents us from re-executing this
6488 = (struct mswitchstr *) xmalloc ((sizeof (struct mswitchstr))
6489 * (n_switches ? n_switches : 1));
6490 for (i = 0; i < n_switches; i++)
6492 int xlen = strlen (switches[i].part1);
6493 for (j = 0; j < cnt; j++)
6494 if (xlen == matches[j].len
6495 && ! strncmp (switches[i].part1, matches[j].str, xlen))
6497 mswitches[n_mswitches].str = matches[j].replace;
6498 mswitches[n_mswitches].len = matches[j].rep_len;
6499 mswitches[n_mswitches].replace = (char *) 0;
6500 mswitches[n_mswitches].rep_len = 0;
6507 for (i = 0; i < n_mswitches; i++)
6508 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
6515 default_arg (p, len)
6519 const char *start, *end;
6521 for (start = multilib_defaults; *start != '\0'; start = end + 1)
6523 while (*start == ' ' || *start == '\t')
6529 for (end = start + 1; *end != ' ' && *end != '\t' && *end != '\0'; end++)
6532 if ((end - start) == len && strncmp (p, start, len) == 0)
6542 /* Work out the subdirectory to use based on the options. The format of
6543 multilib_select is a list of elements. Each element is a subdirectory
6544 name followed by a list of options followed by a semicolon. The format
6545 of multilib_exclusions is the same, but without the preceding
6546 directory. First gcc will check the exclusions, if none of the options
6547 beginning with an exclamation point are present, and all of the other
6548 options are present, then we will ignore this completely. Passing
6549 that, gcc will consider each multilib_select in turn using the same
6550 rules for matching the options. If a match is found, that subdirectory
6557 unsigned int this_path_len;
6558 const char *this_path, *this_arg;
6562 p = multilib_exclusions;
6565 /* Ignore newlines. */
6572 /* Check the arguments. */
6586 while (*p != ' ' && *p != ';')
6593 if (*this_arg != '!')
6601 ok = used_arg (this_arg, p - this_arg);
6615 p = multilib_select;
6618 /* Ignore newlines. */
6625 /* Get the initial path. */
6633 this_path_len = p - this_path;
6635 /* Check the arguments. */
6650 while (*p != ' ' && *p != ';')
6657 if (*this_arg != '!')
6665 /* If this is a default argument, we can just ignore it.
6666 This is true even if this_arg begins with '!'. Beginning
6667 with '!' does not mean that this argument is necessarily
6668 inappropriate for this library: it merely means that
6669 there is a more specific library which uses this
6670 argument. If this argument is a default, we need not
6671 consider that more specific library. */
6672 if (! default_arg (this_arg, p - this_arg))
6674 ok = used_arg (this_arg, p - this_arg);
6685 if (this_path_len != 1
6686 || this_path[0] != '.')
6688 char *new_multilib_dir = xmalloc (this_path_len + 1);
6689 strncpy (new_multilib_dir, this_path, this_path_len);
6690 new_multilib_dir[this_path_len] = '\0';
6691 multilib_dir = new_multilib_dir;
6700 /* Print out the multiple library subdirectory selection
6701 information. This prints out a series of lines. Each line looks
6702 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
6703 required. Only the desired options are printed out, the negative
6704 matches. The options are print without a leading dash. There are
6705 no spaces to make it easy to use the information in the shell.
6706 Each subdirectory is printed only once. This assumes the ordering
6707 generated by the genmultilib script. Also, we leave out ones that match
6711 print_multilib_info ()
6713 const char *p = multilib_select;
6714 const char *last_path = 0, *this_path;
6716 unsigned int last_path_len = 0;
6721 /* Ignore newlines. */
6728 /* Get the initial path. */
6737 /* Check for matches with the multilib_exclusions. We don't bother
6738 with the '!' in either list. If any of the exclusion rules match
6739 all of its options with the select rule, we skip it. */
6741 const char *e = multilib_exclusions;
6742 const char *this_arg;
6747 /* Ignore newlines. */
6754 /* Check the arguments. */
6771 while (*e != ' ' && *e != ';')
6782 int len = e - this_arg;
6789 while (*q != ' ' && *q != ';')
6796 if (! strncmp (arg, this_arg, (len < q - arg) ? q - arg : len) ||
6797 default_arg (this_arg, e - this_arg))
6827 /* If this is a duplicate, skip it. */
6828 skip = (last_path != 0 && (unsigned int) (p - this_path) == last_path_len
6829 && ! strncmp (last_path, this_path, last_path_len));
6831 last_path = this_path;
6832 last_path_len = p - this_path;
6835 /* If this directory requires any default arguments, we can skip
6836 it. We will already have printed a directory identical to
6837 this one which does not require that default argument. */
6855 while (*q != ' ' && *q != ';')
6863 && default_arg (arg, q - arg))
6878 for (p1 = last_path; p1 < p; p1++)
6897 use_arg = *p != '!';
6902 while (*p != ' ' && *p != ';')
6917 /* If there are extra options, print them now. */
6918 if (multilib_extra && *multilib_extra)
6920 int print_at = TRUE;
6923 for (q = multilib_extra; *q != '\0'; q++)