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 static const char *trad_capable_cpp =
669 "%{traditional|ftraditional|traditional-cpp:tradcpp0}\
670 %{!traditional:%{!ftraditional:%{!traditional-cpp:cc1 -E}}}";
672 static const char *cpp_unique_options =
673 "%{C:%{!E:%eGNU C does not support -C without using -E}}\
674 %{!Q:-quiet} %{nostdinc*} %{C} %{v} %{I*} %{P} %{$} %I\
675 %{MD:-MD %W{!o: %b.d}%W{o*:%.d%*}}\
676 %{MMD:-MMD %W{!o: %b.d}%W{o*:%.d%*}}\
677 %{M} %{MM} %W{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
678 %{!E:%{!M:%{!MM:%{MD|MMD:%{o*:-MQ %*}}}}}\
679 %{!no-gcc:-D__GNUC__=%v1 -D__GNUC_MINOR__=%v2 -D__GNUC_PATCHLEVEL__=%v3}\
680 %{!undef:%{!ansi:%{!std=*:%p}%{std=gnu*:%p}} %P} %{trigraphs}\
681 %{Os:-D__OPTIMIZE_SIZE__} %{O*:%{!O0:-D__OPTIMIZE__}}\
682 %{fno-inline|O0|!O*:-D__NO_INLINE__} %{ffast-math:-D__FAST_MATH__}\
683 %{fshort-wchar:-U__WCHAR_TYPE__ -D__WCHAR_TYPE__=short\\ unsigned\\ int}\
684 %{ffreestanding:-D__STDC_HOSTED__=0} %{fno-hosted:-D__STDC_HOSTED__=0}\
685 %{!ffreestanding:%{!fno-hosted:-D__STDC_HOSTED__=1}} %{remap}\
686 %{g3:-dD} %{H} %C %{D*&U*&A*} %{i*} %Z %i\
689 /* This contains cpp options which are common with cc1_options and are passed
690 only when preprocessing only to avoid duplication. */
691 static const char *cpp_options =
692 "%(cpp_unique_options) %{std*} %{d*} %{W*&pedantic*} %{w}\
693 %{fshow-column} %{fno-show-column}\
694 %{fsigned-char&funsigned-char}\
695 %{fleading-underscore} %{fno-leading-underscore}\
696 %{fno-operator-names} %{ftabstop=*}";
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*}\
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) == 'V' \
748 || (CHAR) == 'B' || (CHAR) == 'b')
750 #ifndef SWITCH_TAKES_ARG
751 #define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR)
754 /* This defines which multi-letter switches take arguments. */
756 #define DEFAULT_WORD_SWITCH_TAKES_ARG(STR) \
757 (!strcmp (STR, "Tdata") || !strcmp (STR, "Ttext") \
758 || !strcmp (STR, "Tbss") || !strcmp (STR, "include") \
759 || !strcmp (STR, "imacros") || !strcmp (STR, "aux-info") \
760 || !strcmp (STR, "idirafter") || !strcmp (STR, "iprefix") \
761 || !strcmp (STR, "iwithprefix") || !strcmp (STR, "iwithprefixbefore") \
762 || !strcmp (STR, "isystem") || !strcmp (STR, "-param") \
763 || !strcmp (STR, "specs") \
764 || !strcmp (STR, "MF") || !strcmp (STR, "MT") || !strcmp (STR, "MQ"))
766 #ifndef WORD_SWITCH_TAKES_ARG
767 #define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
770 #ifdef HAVE_TARGET_EXECUTABLE_SUFFIX
771 /* This defines which switches stop a full compilation. */
772 #define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \
773 ((CHAR) == 'c' || (CHAR) == 'S')
775 #ifndef SWITCH_CURTAILS_COMPILATION
776 #define SWITCH_CURTAILS_COMPILATION(CHAR) \
777 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR)
781 /* Record the mapping from file suffixes for compilation specs. */
785 const char *suffix; /* Use this compiler for input files
786 whose names end in this suffix. */
788 const char *spec; /* To use this compiler, run this spec. */
790 const char *cpp_spec; /* If non-NULL, substitute this spec
791 for `%C', rather than the usual
795 /* Pointer to a vector of `struct compiler' that gives the spec for
796 compiling a file, based on its suffix.
797 A file that does not end in any of these suffixes will be passed
798 unchanged to the loader and nothing else will be done to it.
800 An entry containing two 0s is used to terminate the vector.
802 If multiple entries match a file, the last matching one is used. */
804 static struct compiler *compilers;
806 /* Number of entries in `compilers', not counting the null terminator. */
808 static int n_compilers;
810 /* The default list of file name suffixes and their compilation specs. */
812 static const struct compiler default_compilers[] =
814 /* Add lists of suffixes of known languages here. If those languages
815 were not present when we built the driver, we will hit these copies
816 and be given a more meaningful error than "file not used since
817 linking is not done". */
818 {".m", "#Objective-C", 0}, {".mi", "#Objective-C", 0},
819 {".cc", "#C++", 0}, {".cxx", "#C++", 0}, {".cpp", "#C++", 0},
820 {".cp", "#C++", 0}, {".c++", "#C++", 0}, {".C", "#C++", 0},
822 {".ads", "#Ada", 0}, {".adb", "#Ada", 0},
823 {".f", "#Fortran", 0}, {".for", "#Fortran", 0}, {".fpp", "#Fortran", 0},
824 {".F", "#Fortran", 0}, {".FOR", "#Fortran", 0}, {".FPP", "#Fortran", 0},
825 {".r", "#Ratfor", 0},
826 {".p", "#Pascal", 0}, {".pas", "#Pascal", 0},
827 {".ch", "#Chill", 0}, {".chi", "#Chill", 0},
828 {".java", "#Java", 0}, {".class", "#Java", 0},
829 {".zip", "#Java", 0}, {".jar", "#Java", 0},
830 /* Next come the entries for C. */
833 /* cc1 has an integrated ISO C preprocessor. We should invoke the
834 external preprocessor if -save-temps is given. */
835 "%{E|M|MM:%(trad_capable_cpp) -lang-c %{ansi:-std=c89} %(cpp_options)}\
837 %{traditional|ftraditional:\
838 %eGNU C no longer supports -traditional without -E}\
839 %{save-temps|traditional-cpp:%(trad_capable_cpp) \
840 -lang-c %{ansi:-std=c89} %(cpp_options) %b.i \n\
841 cc1 -fpreprocessed %b.i %(cc1_options)}\
842 %{!save-temps:%{!traditional-cpp:\
843 cc1 -lang-c %{ansi:-std=c89} %(cpp_unique_options) %(cc1_options)}}\
844 %{!fsyntax-only:%(invoke_as)}}}}", 0},
846 "%{!E:%e-E required when input is from standard input}\
847 %(trad_capable_cpp) -lang-c %{ansi:-std=c89} %(cpp_options)", 0},
848 {".h", "@c-header", 0},
850 "%{!E:%ecompilation of header file requested} \
851 %(trad_capable_cpp) -lang-c %{ansi:-std=c89} %(cpp_options)", 0},
852 {".i", "@cpp-output", 0},
854 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0},
855 {".s", "@assembler", 0},
857 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0},
858 {".S", "@assembler-with-cpp", 0},
859 {"@assembler-with-cpp",
860 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
861 %{!M:%{!MM:%{!E:%{!S:-o %{|!pipe:%g.s} |\n\
862 as %(asm_debug) %(asm_options) %{!pipe:%g.s} %A }}}}", 0},
864 /* Mark end of table */
868 /* Number of elements in default_compilers, not counting the terminator. */
870 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
872 /* A vector of options to give to the linker.
873 These options are accumulated by %x,
874 and substituted into the linker command with %X. */
875 static int n_linker_options;
876 static char **linker_options;
878 /* A vector of options to give to the assembler.
879 These options are accumulated by -Wa,
880 and substituted into the assembler command with %Y. */
881 static int n_assembler_options;
882 static char **assembler_options;
884 /* A vector of options to give to the preprocessor.
885 These options are accumulated by -Wp,
886 and substituted into the preprocessor command with %Z. */
887 static int n_preprocessor_options;
888 static char **preprocessor_options;
890 /* Define how to map long options into short ones. */
892 /* This structure describes one mapping. */
895 /* The long option's name. */
896 const char *const name;
897 /* The equivalent short option. */
898 const char *const equivalent;
899 /* Argument info. A string of flag chars; NULL equals no options.
900 a => argument required.
901 o => argument optional.
902 j => join argument to equivalent, making one word.
903 * => require other text after NAME as an argument. */
904 const char *const arg_info;
907 /* This is the table of mappings. Mappings are tried sequentially
908 for each option encountered; the first one that matches, wins. */
910 static const struct option_map option_map[] =
912 {"--all-warnings", "-Wall", 0},
913 {"--ansi", "-ansi", 0},
914 {"--assemble", "-S", 0},
915 {"--assert", "-A", "a"},
916 {"--classpath", "-fclasspath=", "aj"},
917 {"--bootclasspath", "-fbootclasspath=", "aj"},
918 {"--CLASSPATH", "-fclasspath=", "aj"},
919 {"--comments", "-C", 0},
920 {"--compile", "-c", 0},
921 {"--debug", "-g", "oj"},
922 {"--define-macro", "-D", "aj"},
923 {"--dependencies", "-M", 0},
924 {"--dump", "-d", "a"},
925 {"--dumpbase", "-dumpbase", "a"},
926 {"--entry", "-e", 0},
927 {"--extra-warnings", "-W", 0},
928 {"--for-assembler", "-Wa", "a"},
929 {"--for-linker", "-Xlinker", "a"},
930 {"--force-link", "-u", "a"},
931 {"--imacros", "-imacros", "a"},
932 {"--include", "-include", "a"},
933 {"--include-barrier", "-I-", 0},
934 {"--include-directory", "-I", "aj"},
935 {"--include-directory-after", "-idirafter", "a"},
936 {"--include-prefix", "-iprefix", "a"},
937 {"--include-with-prefix", "-iwithprefix", "a"},
938 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
939 {"--include-with-prefix-after", "-iwithprefix", "a"},
940 {"--language", "-x", "a"},
941 {"--library-directory", "-L", "a"},
942 {"--machine", "-m", "aj"},
943 {"--machine-", "-m", "*j"},
944 {"--no-line-commands", "-P", 0},
945 {"--no-precompiled-includes", "-noprecomp", 0},
946 {"--no-standard-includes", "-nostdinc", 0},
947 {"--no-standard-libraries", "-nostdlib", 0},
948 {"--no-warnings", "-w", 0},
949 {"--optimize", "-O", "oj"},
950 {"--output", "-o", "a"},
951 {"--output-class-directory", "-foutput-class-dir=", "ja"},
952 {"--param", "--param", "a"},
953 {"--pedantic", "-pedantic", 0},
954 {"--pedantic-errors", "-pedantic-errors", 0},
955 {"--pipe", "-pipe", 0},
956 {"--prefix", "-B", "a"},
957 {"--preprocess", "-E", 0},
958 {"--print-search-dirs", "-print-search-dirs", 0},
959 {"--print-file-name", "-print-file-name=", "aj"},
960 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
961 {"--print-missing-file-dependencies", "-MG", 0},
962 {"--print-multi-lib", "-print-multi-lib", 0},
963 {"--print-multi-directory", "-print-multi-directory", 0},
964 {"--print-prog-name", "-print-prog-name=", "aj"},
965 {"--profile", "-p", 0},
966 {"--profile-blocks", "-a", 0},
967 {"--quiet", "-q", 0},
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 == 'V' || 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;
1865 /* Get original name */
1866 p1 += sizeof "%rename";
1867 while (*p1 == ' ' || *p1 == '\t')
1870 if (! ISALPHA ((unsigned char) *p1))
1871 fatal ("specs %%rename syntax malformed after %ld characters",
1872 (long) (p1 - buffer));
1875 while (*p2 && !ISSPACE ((unsigned char) *p2))
1878 if (*p2 != ' ' && *p2 != '\t')
1879 fatal ("specs %%rename syntax malformed after %ld characters",
1880 (long) (p2 - buffer));
1884 while (*p2 == ' ' || *p2 == '\t')
1887 if (! ISALPHA ((unsigned char) *p2))
1888 fatal ("specs %%rename syntax malformed after %ld characters",
1889 (long) (p2 - buffer));
1891 /* Get new spec name. */
1893 while (*p3 && !ISSPACE ((unsigned char) *p3))
1897 fatal ("specs %%rename syntax malformed after %ld characters",
1898 (long) (p3 - buffer));
1901 for (sl = specs; sl; sl = sl->next)
1902 if (name_len == sl->name_len && !strcmp (sl->name, p1))
1906 fatal ("specs %s spec was not found to be renamed", p1);
1908 if (strcmp (p1, p2) == 0)
1913 notice ("rename spec %s to %s\n", p1, p2);
1915 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
1919 set_spec (p2, *(sl->ptr_spec));
1921 free ((PTR) *(sl->ptr_spec));
1923 *(sl->ptr_spec) = "";
1928 fatal ("specs unknown %% command after %ld characters",
1929 (long) (p1 - buffer));
1932 /* Find the colon that should end the suffix. */
1934 while (*p1 && *p1 != ':' && *p1 != '\n')
1937 /* The colon shouldn't be missing. */
1939 fatal ("specs file malformed after %ld characters",
1940 (long) (p1 - buffer));
1942 /* Skip back over trailing whitespace. */
1944 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
1947 /* Copy the suffix to a string. */
1948 suffix = save_string (p, p2 - p);
1949 /* Find the next line. */
1950 p = skip_whitespace (p1 + 1);
1952 fatal ("specs file malformed after %ld characters",
1953 (long) (p - buffer));
1956 /* Find next blank line or end of string. */
1957 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
1960 /* Specs end at the blank line and do not include the newline. */
1961 spec = save_string (p, p1 - p);
1964 /* Delete backslash-newline sequences from the spec. */
1969 if (in[0] == '\\' && in[1] == '\n')
1971 else if (in[0] == '#')
1972 while (*in && *in != '\n')
1980 if (suffix[0] == '*')
1982 if (! strcmp (suffix, "*link_command"))
1983 link_command_spec = spec;
1985 set_spec (suffix + 1, spec);
1989 /* Add this pair to the vector. */
1991 = ((struct compiler *)
1992 xrealloc (compilers,
1993 (n_compilers + 2) * sizeof (struct compiler)));
1995 compilers[n_compilers].suffix = suffix;
1996 compilers[n_compilers].spec = spec;
1998 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2002 link_command_spec = spec;
2005 if (link_command_spec == 0)
2006 fatal ("spec file has no spec for linking");
2009 /* Record the names of temporary files we tell compilers to write,
2010 and delete them at the end of the run. */
2012 /* This is the common prefix we use to make temp file names.
2013 It is chosen once for each run of this program.
2014 It is substituted into a spec by %g or %j.
2015 Thus, all temp file names contain this prefix.
2016 In practice, all temp file names start with this prefix.
2018 This prefix comes from the envvar TMPDIR if it is defined;
2019 otherwise, from the P_tmpdir macro if that is defined;
2020 otherwise, in /usr/tmp or /tmp;
2021 or finally the current directory if all else fails. */
2023 static const char *temp_filename;
2025 /* Length of the prefix. */
2027 static int temp_filename_length;
2029 /* Define the list of temporary files to delete. */
2034 struct temp_file *next;
2037 /* Queue of files to delete on success or failure of compilation. */
2038 static struct temp_file *always_delete_queue;
2039 /* Queue of files to delete on failure of compilation. */
2040 static struct temp_file *failure_delete_queue;
2042 /* Record FILENAME as a file to be deleted automatically.
2043 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2044 otherwise delete it in any case.
2045 FAIL_DELETE nonzero means delete it if a compilation step fails;
2046 otherwise delete it in any case. */
2049 record_temp_file (filename, always_delete, fail_delete)
2050 const char *filename;
2054 char *const name = xstrdup (filename);
2058 struct temp_file *temp;
2059 for (temp = always_delete_queue; temp; temp = temp->next)
2060 if (! strcmp (name, temp->name))
2063 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
2064 temp->next = always_delete_queue;
2066 always_delete_queue = temp;
2073 struct temp_file *temp;
2074 for (temp = failure_delete_queue; temp; temp = temp->next)
2075 if (! strcmp (name, temp->name))
2078 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
2079 temp->next = failure_delete_queue;
2081 failure_delete_queue = temp;
2087 /* Delete all the temporary files whose names we previously recorded. */
2090 delete_if_ordinary (name)
2097 printf ("Delete %s? (y or n) ", name);
2101 while ((c = getchar ()) != '\n' && c != EOF)
2104 if (i == 'y' || i == 'Y')
2106 if (stat (name, &st) >= 0 && S_ISREG (st.st_mode))
2107 if (unlink (name) < 0)
2109 perror_with_name (name);
2113 delete_temp_files ()
2115 struct temp_file *temp;
2117 for (temp = always_delete_queue; temp; temp = temp->next)
2118 delete_if_ordinary (temp->name);
2119 always_delete_queue = 0;
2122 /* Delete all the files to be deleted on error. */
2125 delete_failure_queue ()
2127 struct temp_file *temp;
2129 for (temp = failure_delete_queue; temp; temp = temp->next)
2130 delete_if_ordinary (temp->name);
2134 clear_failure_queue ()
2136 failure_delete_queue = 0;
2139 /* Build a list of search directories from PATHS.
2140 PREFIX is a string to prepend to the list.
2141 If CHECK_DIR_P is non-zero we ensure the directory exists.
2142 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2143 It is also used by the --print-search-dirs flag. */
2146 build_search_list (paths, prefix, check_dir_p)
2147 struct path_prefix *paths;
2151 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0;
2153 = (just_machine_suffix) ? strlen (just_machine_suffix) : 0;
2154 int first_time = TRUE;
2155 struct prefix_list *pprefix;
2157 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2158 obstack_1grow (&collect_obstack, '=');
2160 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next)
2162 int len = strlen (pprefix->prefix);
2166 || is_directory (pprefix->prefix, machine_suffix, 0)))
2169 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2172 obstack_grow (&collect_obstack, pprefix->prefix, len);
2173 obstack_grow (&collect_obstack, machine_suffix, suffix_len);
2176 if (just_machine_suffix
2177 && pprefix->require_machine_suffix == 2
2179 || is_directory (pprefix->prefix, just_machine_suffix, 0)))
2182 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2185 obstack_grow (&collect_obstack, pprefix->prefix, len);
2186 obstack_grow (&collect_obstack, just_machine_suffix,
2190 if (! pprefix->require_machine_suffix)
2193 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2196 obstack_grow (&collect_obstack, pprefix->prefix, len);
2200 obstack_1grow (&collect_obstack, '\0');
2201 return obstack_finish (&collect_obstack);
2204 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2208 putenv_from_prefixes (paths, env_var)
2209 struct path_prefix *paths;
2210 const char *env_var;
2212 putenv (build_search_list (paths, env_var, 1));
2217 /* FIXME: the location independence code for VMS is hairier than this,
2218 and hasn't been written. */
2220 /* Split a filename into component directories. */
2223 split_directories (name, ptr_num_dirs)
2232 /* Count the number of directories. Special case MSDOS disk names as part
2233 of the initial directory. */
2235 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2236 if (name[1] == ':' && IS_DIR_SEPARATOR (name[2]))
2241 #endif /* HAVE_DOS_BASED_FILE_SYSTEM */
2243 while ((ch = *p++) != '\0')
2245 if (IS_DIR_SEPARATOR (ch))
2248 while (IS_DIR_SEPARATOR (*p))
2253 dirs = (char **) xmalloc (sizeof (char *) * (num_dirs + 2));
2255 /* Now copy the directory parts. */
2258 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2259 if (name[1] == ':' && IS_DIR_SEPARATOR (name[2]))
2261 dirs[num_dirs++] = save_string (p, 3);
2264 #endif /* HAVE_DOS_BASED_FILE_SYSTEM */
2267 while ((ch = *p++) != '\0')
2269 if (IS_DIR_SEPARATOR (ch))
2271 while (IS_DIR_SEPARATOR (*p))
2274 dirs[num_dirs++] = save_string (q, p - q);
2280 dirs[num_dirs++] = save_string (q, p - 1 - q);
2282 dirs[num_dirs] = NULL;
2284 *ptr_num_dirs = num_dirs;
2289 /* Release storage held by split directories. */
2292 free_split_directories (dirs)
2297 while (dirs[i] != NULL)
2300 free ((char *) dirs);
2303 /* Given three strings PROGNAME, BIN_PREFIX, PREFIX, return a string that gets
2304 to PREFIX starting with the directory portion of PROGNAME and a relative
2305 pathname of the difference between BIN_PREFIX and PREFIX.
2307 For example, if BIN_PREFIX is /alpha/beta/gamma/gcc/delta, PREFIX is
2308 /alpha/beta/gamma/omega/, and PROGNAME is /red/green/blue/gcc, then this
2309 function will return /red/green/blue/../omega.
2311 If no relative prefix can be found, return NULL. */
2314 make_relative_prefix (progname, bin_prefix, prefix)
2315 const char *progname;
2316 const char *bin_prefix;
2319 char **prog_dirs, **bin_dirs, **prefix_dirs;
2320 int prog_num, bin_num, prefix_num, std_loc_p;
2323 prog_dirs = split_directories (progname, &prog_num);
2324 bin_dirs = split_directories (bin_prefix, &bin_num);
2326 /* If there is no full pathname, try to find the program by checking in each
2327 of the directories specified in the PATH environment variable. */
2332 GET_ENV_PATH_LIST (temp, "PATH");
2335 char *startp, *endp, *nstore;
2336 size_t prefixlen = strlen (temp) + 1;
2340 nstore = (char *) alloca (prefixlen + strlen (progname) + 1);
2342 startp = endp = temp;
2345 if (*endp == PATH_SEPARATOR || *endp == 0)
2350 nstore[1] = DIR_SEPARATOR;
2355 strncpy (nstore, startp, endp - startp);
2356 if (! IS_DIR_SEPARATOR (endp[-1]))
2358 nstore[endp - startp] = DIR_SEPARATOR;
2359 nstore[endp - startp + 1] = 0;
2362 nstore[endp - startp] = 0;
2364 strcat (nstore, progname);
2365 if (! access (nstore, X_OK)
2366 #ifdef HAVE_HOST_EXECUTABLE_SUFFIX
2367 || ! access (strcat (nstore, HOST_EXECUTABLE_SUFFIX), X_OK)
2371 free_split_directories (prog_dirs);
2373 prog_dirs = split_directories (progname, &prog_num);
2379 endp = startp = endp + 1;
2387 /* Remove the program name from comparison of directory names. */
2390 /* Determine if the compiler is installed in the standard location, and if
2391 so, we don't need to specify relative directories. Also, if argv[0]
2392 doesn't contain any directory specifiers, there is not much we can do. */
2394 if (prog_num == bin_num)
2396 for (i = 0; i < bin_num; i++)
2398 if (strcmp (prog_dirs[i], bin_dirs[i]) != 0)
2402 if (prog_num <= 0 || i == bin_num)
2405 free_split_directories (prog_dirs);
2406 free_split_directories (bin_dirs);
2407 prog_dirs = bin_dirs = (char **) 0;
2412 prefix_dirs = split_directories (prefix, &prefix_num);
2414 /* Find how many directories are in common between bin_prefix & prefix. */
2415 n = (prefix_num < bin_num) ? prefix_num : bin_num;
2416 for (common = 0; common < n; common++)
2418 if (strcmp (bin_dirs[common], prefix_dirs[common]) != 0)
2422 /* If there are no common directories, there can be no relative prefix. */
2425 free_split_directories (prog_dirs);
2426 free_split_directories (bin_dirs);
2427 free_split_directories (prefix_dirs);
2431 /* Build up the pathnames in argv[0]. */
2432 for (i = 0; i < prog_num; i++)
2433 obstack_grow (&obstack, prog_dirs[i], strlen (prog_dirs[i]));
2435 /* Now build up the ..'s. */
2436 for (i = common; i < n; i++)
2438 obstack_grow (&obstack, DIR_UP, sizeof (DIR_UP) - 1);
2439 obstack_1grow (&obstack, DIR_SEPARATOR);
2442 /* Put in directories to move over to prefix. */
2443 for (i = common; i < prefix_num; i++)
2444 obstack_grow (&obstack, prefix_dirs[i], strlen (prefix_dirs[i]));
2446 free_split_directories (prog_dirs);
2447 free_split_directories (bin_dirs);
2448 free_split_directories (prefix_dirs);
2450 obstack_1grow (&obstack, '\0');
2451 return obstack_finish (&obstack);
2455 /* Check whether NAME can be accessed in MODE. This is like access,
2456 except that it never considers directories to be executable. */
2459 access_check (name, mode)
2467 if (stat (name, &st) < 0
2468 || S_ISDIR (st.st_mode))
2472 return access (name, mode);
2475 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2476 access to check permissions.
2477 Return 0 if not found, otherwise return its name, allocated with malloc. */
2480 find_a_file (pprefix, name, mode)
2481 struct path_prefix *pprefix;
2486 const char *const file_suffix =
2487 ((mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "");
2488 struct prefix_list *pl;
2489 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1;
2491 #ifdef DEFAULT_ASSEMBLER
2492 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2493 return xstrdup (DEFAULT_ASSEMBLER);
2496 #ifdef DEFAULT_LINKER
2497 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2498 return xstrdup (DEFAULT_LINKER);
2502 len += strlen (machine_suffix);
2504 temp = xmalloc (len);
2506 /* Determine the filename to execute (special case for absolute paths). */
2508 if (IS_ABSOLUTE_PATHNAME (name))
2510 if (access (name, mode) == 0)
2512 strcpy (temp, name);
2517 for (pl = pprefix->plist; pl; pl = pl->next)
2521 /* Some systems have a suffix for executable files.
2522 So try appending that first. */
2523 if (file_suffix[0] != 0)
2525 strcpy (temp, pl->prefix);
2526 strcat (temp, machine_suffix);
2527 strcat (temp, name);
2528 strcat (temp, file_suffix);
2529 if (access_check (temp, mode) == 0)
2531 if (pl->used_flag_ptr != 0)
2532 *pl->used_flag_ptr = 1;
2537 /* Now try just the name. */
2538 strcpy (temp, pl->prefix);
2539 strcat (temp, machine_suffix);
2540 strcat (temp, name);
2541 if (access_check (temp, mode) == 0)
2543 if (pl->used_flag_ptr != 0)
2544 *pl->used_flag_ptr = 1;
2549 /* Certain prefixes are tried with just the machine type,
2550 not the version. This is used for finding as, ld, etc. */
2551 if (just_machine_suffix && pl->require_machine_suffix == 2)
2553 /* Some systems have a suffix for executable files.
2554 So try appending that first. */
2555 if (file_suffix[0] != 0)
2557 strcpy (temp, pl->prefix);
2558 strcat (temp, just_machine_suffix);
2559 strcat (temp, name);
2560 strcat (temp, file_suffix);
2561 if (access_check (temp, mode) == 0)
2563 if (pl->used_flag_ptr != 0)
2564 *pl->used_flag_ptr = 1;
2569 strcpy (temp, pl->prefix);
2570 strcat (temp, just_machine_suffix);
2571 strcat (temp, name);
2572 if (access_check (temp, mode) == 0)
2574 if (pl->used_flag_ptr != 0)
2575 *pl->used_flag_ptr = 1;
2580 /* Certain prefixes can't be used without the machine suffix
2581 when the machine or version is explicitly specified. */
2582 if (! pl->require_machine_suffix)
2584 /* Some systems have a suffix for executable files.
2585 So try appending that first. */
2586 if (file_suffix[0] != 0)
2588 strcpy (temp, pl->prefix);
2589 strcat (temp, name);
2590 strcat (temp, file_suffix);
2591 if (access_check (temp, mode) == 0)
2593 if (pl->used_flag_ptr != 0)
2594 *pl->used_flag_ptr = 1;
2599 strcpy (temp, pl->prefix);
2600 strcat (temp, name);
2601 if (access_check (temp, mode) == 0)
2603 if (pl->used_flag_ptr != 0)
2604 *pl->used_flag_ptr = 1;
2614 /* Ranking of prefixes in the sort list. -B prefixes are put before
2617 enum path_prefix_priority
2619 PREFIX_PRIORITY_B_OPT,
2620 PREFIX_PRIORITY_LAST
2623 /* Add an entry for PREFIX in PLIST. The PLIST is kept in assending
2624 order according to PRIORITY. Within each PRIORITY, new entries are
2627 If WARN is nonzero, we will warn if no file is found
2628 through this prefix. WARN should point to an int
2629 which will be set to 1 if this entry is used.
2631 COMPONENT is the value to be passed to update_path.
2633 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2634 the complete value of machine_suffix.
2635 2 means try both machine_suffix and just_machine_suffix. */
2638 add_prefix (pprefix, prefix, component, priority, require_machine_suffix, warn)
2639 struct path_prefix *pprefix;
2641 const char *component;
2642 /* enum prefix_priority */ int priority;
2643 int require_machine_suffix;
2646 struct prefix_list *pl, **prev;
2649 for (prev = &pprefix->plist;
2650 (*prev) != NULL && (*prev)->priority <= priority;
2651 prev = &(*prev)->next)
2654 /* Keep track of the longest prefix */
2656 prefix = update_path (prefix, component);
2657 len = strlen (prefix);
2658 if (len > pprefix->max_len)
2659 pprefix->max_len = len;
2661 pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
2662 pl->prefix = prefix;
2663 pl->require_machine_suffix = require_machine_suffix;
2664 pl->used_flag_ptr = warn;
2665 pl->priority = priority;
2669 /* Insert after PREV */
2674 /* Execute the command specified by the arguments on the current line of spec.
2675 When using pipes, this includes several piped-together commands
2676 with `|' between them.
2678 Return 0 if successful, -1 if failed. */
2684 int n_commands; /* # of command. */
2688 const char *prog; /* program name. */
2689 const char **argv; /* vector of args. */
2690 int pid; /* pid of process for this command. */
2693 struct command *commands; /* each command buffer with above info. */
2695 /* Count # of piped commands. */
2696 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2697 if (strcmp (argbuf[i], "|") == 0)
2700 /* Get storage for each command. */
2701 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2703 /* Split argbuf into its separate piped processes,
2704 and record info about each one.
2705 Also search for the programs that are to be run. */
2707 commands[0].prog = argbuf[0]; /* first command. */
2708 commands[0].argv = &argbuf[0];
2709 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK);
2712 commands[0].argv[0] = string;
2714 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2715 if (strcmp (argbuf[i], "|") == 0)
2716 { /* each command. */
2717 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2718 fatal ("-pipe not supported");
2720 argbuf[i] = 0; /* termination of command args. */
2721 commands[n_commands].prog = argbuf[i + 1];
2722 commands[n_commands].argv = &argbuf[i + 1];
2723 string = find_a_file (&exec_prefixes, commands[n_commands].prog, X_OK);
2725 commands[n_commands].argv[0] = string;
2729 argbuf[argbuf_index] = 0;
2731 /* If -v, print what we are about to do, and maybe query. */
2735 /* For help listings, put a blank line between sub-processes. */
2736 if (print_help_list)
2737 fputc ('\n', stderr);
2739 /* Print each piped command as a separate line. */
2740 for (i = 0; i < n_commands; i++)
2742 const char *const *j;
2744 if (verbose_only_flag)
2746 for (j = commands[i].argv; *j; j++)
2749 fprintf (stderr, " \"");
2750 for (p = *j; *p; ++p)
2752 if (*p == '"' || *p == '\\' || *p == '$')
2753 fputc ('\\', stderr);
2756 fputc ('"', stderr);
2760 for (j = commands[i].argv; *j; j++)
2761 fprintf (stderr, " %s", *j);
2763 /* Print a pipe symbol after all but the last command. */
2764 if (i + 1 != n_commands)
2765 fprintf (stderr, " |");
2766 fprintf (stderr, "\n");
2769 if (verbose_only_flag != 0)
2772 notice ("\nGo ahead? (y or n) ");
2776 while (getchar () != '\n')
2779 if (i != 'y' && i != 'Y')
2784 /* Run each piped subprocess. */
2786 for (i = 0; i < n_commands; i++)
2788 char *errmsg_fmt, *errmsg_arg;
2789 const char *string = commands[i].argv[0];
2791 /* For some bizarre reason, the second argument of execvp() is
2792 char *const *, not const char *const *. */
2793 commands[i].pid = pexecute (string, (char *const *) commands[i].argv,
2794 programname, temp_filename,
2795 &errmsg_fmt, &errmsg_arg,
2796 ((i == 0 ? PEXECUTE_FIRST : 0)
2797 | (i + 1 == n_commands ? PEXECUTE_LAST : 0)
2798 | (string == commands[i].prog
2799 ? PEXECUTE_SEARCH : 0)
2800 | (verbose_flag ? PEXECUTE_VERBOSE : 0)));
2802 if (commands[i].pid == -1)
2803 pfatal_pexecute (errmsg_fmt, errmsg_arg);
2805 if (string != commands[i].prog)
2806 free ((PTR) string);
2811 /* Wait for all the subprocesses to finish.
2812 We don't care what order they finish in;
2813 we know that N_COMMANDS waits will get them all.
2814 Ignore subprocesses that we don't know about,
2815 since they can be spawned by the process that exec'ed us. */
2819 #ifdef HAVE_GETRUSAGE
2821 double ut = 0.0, st = 0.0;
2824 for (i = 0; i < n_commands;)
2830 pid = pwait (commands[i].pid, &status, 0);
2834 #ifdef HAVE_GETRUSAGE
2837 /* getrusage returns the total resource usage of all children
2838 up to now. Copy the previous values into prus, get the
2839 current statistics, then take the difference. */
2842 getrusage (RUSAGE_CHILDREN, &rus);
2843 d.tv_sec = rus.ru_utime.tv_sec - prus.ru_utime.tv_sec;
2844 d.tv_usec = rus.ru_utime.tv_usec - prus.ru_utime.tv_usec;
2845 ut = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2847 d.tv_sec = rus.ru_stime.tv_sec - prus.ru_stime.tv_sec;
2848 d.tv_usec = rus.ru_stime.tv_usec - prus.ru_stime.tv_usec;
2849 st = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2853 for (j = 0; j < n_commands; j++)
2854 if (commands[j].pid == pid)
2857 if (WIFSIGNALED (status))
2860 /* SIGPIPE is a special case. It happens in -pipe mode
2861 when the compiler dies before the preprocessor is
2862 done, or the assembler dies before the compiler is
2863 done. There's generally been an error already, and
2864 this is just fallout. So don't generate another error
2865 unless we would otherwise have succeeded. */
2866 if (WTERMSIG (status) == SIGPIPE
2867 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2872 Internal error: %s (program %s)\n\
2873 Please submit a full bug report.\n\
2874 See %s for instructions.",
2875 strsignal (WTERMSIG (status)), commands[j].prog,
2880 else if (WIFEXITED (status)
2881 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2883 if (WEXITSTATUS (status) > greatest_status)
2884 greatest_status = WEXITSTATUS (status);
2887 #ifdef HAVE_GETRUSAGE
2888 if (report_times && ut + st != 0)
2889 notice ("# %s %.2f %.2f\n", commands[j].prog, ut, st);
2898 /* Find all the switches given to us
2899 and make a vector describing them.
2900 The elements of the vector are strings, one per switch given.
2901 If a switch uses following arguments, then the `part1' field
2902 is the switch itself and the `args' field
2903 is a null-terminated vector containing the following arguments.
2904 The `live_cond' field is:
2906 1 if the switch is true in a conditional spec,
2907 -1 if false (overridden by a later switch)
2908 -2 if this switch should be ignored (used in %{<S})
2909 The `validated' field is nonzero if any spec has looked at this switch;
2910 if it remains zero at the end of the run, it must be meaningless. */
2913 #define SWITCH_FALSE -1
2914 #define SWITCH_IGNORE -2
2915 #define SWITCH_LIVE 1
2922 unsigned char validated;
2923 unsigned char ordering;
2926 static struct switchstr *switches;
2928 static int n_switches;
2933 const char *language;
2936 /* Also a vector of input files specified. */
2938 static struct infile *infiles;
2942 /* This counts the number of libraries added by lang_specific_driver, so that
2943 we can tell if there were any user supplied any files or libraries. */
2945 static int added_libraries;
2947 /* And a vector of corresponding output files is made up later. */
2949 const char **outfiles;
2951 /* Used to track if none of the -B paths are used. */
2954 /* Used to track if standard path isn't used and -b or -V is specified. */
2955 static int warn_std;
2957 /* Gives value to pass as "warn" to add_prefix for standard prefixes. */
2958 static int *warn_std_ptr = 0;
2960 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2962 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2963 is true if we should look for an executable suffix. DO_OBJ
2964 is true if we should look for an object suffix. */
2967 convert_filename (name, do_exe, do_obj)
2969 int do_exe ATTRIBUTE_UNUSED;
2970 int do_obj ATTRIBUTE_UNUSED;
2972 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2980 len = strlen (name);
2982 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2983 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2984 if (do_obj && len > 2
2985 && name[len - 2] == '.'
2986 && name[len - 1] == 'o')
2988 obstack_grow (&obstack, name, len - 2);
2989 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2990 name = obstack_finish (&obstack);
2994 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2995 /* If there is no filetype, make it the executable suffix (which includes
2996 the "."). But don't get confused if we have just "-o". */
2997 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
3000 for (i = len - 1; i >= 0; i--)
3001 if (IS_DIR_SEPARATOR (name[i]))
3004 for (i++; i < len; i++)
3008 obstack_grow (&obstack, name, len);
3009 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
3010 strlen (TARGET_EXECUTABLE_SUFFIX));
3011 name = obstack_finish (&obstack);
3018 /* Display the command line switches accepted by gcc. */
3022 printf (_("Usage: %s [options] file...\n"), programname);
3023 fputs (_("Options:\n"), stdout);
3025 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
3026 fputs (_(" --help Display this information\n"), stdout);
3027 fputs (_(" --target-help Display target specific command line options\n"), stdout);
3029 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
3030 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
3031 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
3032 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
3033 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
3034 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
3035 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
3036 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
3037 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
3039 -print-multi-lib Display the mapping between command line options and\n\
3040 multiple library search directories\n"), stdout);
3041 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3042 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3043 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3044 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3045 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3046 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3047 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3048 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3049 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3050 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3051 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
3052 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
3053 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3054 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3055 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3056 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3057 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3058 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3060 -x <language> Specify the language of the following input files\n\
3061 Permissable languages include: c c++ assembler none\n\
3062 'none' means revert to the default behavior of\n\
3063 guessing the language based on the file's extension\n\
3067 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3068 passed on to the various sub-processes invoked by %s. In order to pass\n\
3069 other options on to these processes the -W<letter> options must be used.\n\
3072 /* The rest of the options are displayed by invocations of the various
3077 add_preprocessor_option (option, len)
3081 n_preprocessor_options++;
3083 if (! preprocessor_options)
3084 preprocessor_options
3085 = (char **) xmalloc (n_preprocessor_options * sizeof (char *));
3087 preprocessor_options
3088 = (char **) xrealloc (preprocessor_options,
3089 n_preprocessor_options * sizeof (char *));
3091 preprocessor_options [n_preprocessor_options - 1] =
3092 save_string (option, len);
3096 add_assembler_option (option, len)
3100 n_assembler_options++;
3102 if (! assembler_options)
3104 = (char **) xmalloc (n_assembler_options * sizeof (char *));
3107 = (char **) xrealloc (assembler_options,
3108 n_assembler_options * sizeof (char *));
3110 assembler_options [n_assembler_options - 1] = save_string (option, len);
3114 add_linker_option (option, len)
3120 if (! linker_options)
3122 = (char **) xmalloc (n_linker_options * sizeof (char *));
3125 = (char **) xrealloc (linker_options,
3126 n_linker_options * sizeof (char *));
3128 linker_options [n_linker_options - 1] = save_string (option, len);
3131 /* Create the vector `switches' and its contents.
3132 Store its length in `n_switches'. */
3135 process_command (argc, argv)
3137 const char *const *argv;
3142 const char *spec_lang = 0;
3143 int last_language_n_infiles;
3146 int lang_n_infiles = 0;
3147 #ifdef MODIFY_TARGET_NAME
3148 int is_modify_target_name;
3152 GET_ENV_PATH_LIST (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3156 added_libraries = 0;
3158 /* Figure compiler version from version string. */
3160 compiler_version = temp1 = xstrdup (version_string);
3162 for (; *temp1; ++temp1)
3171 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3172 see if we can create it from the pathname specified in argv[0]. */
3175 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3176 if (!gcc_exec_prefix)
3178 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
3179 standard_exec_prefix);
3180 if (gcc_exec_prefix)
3181 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3185 if (gcc_exec_prefix)
3187 int len = strlen (gcc_exec_prefix);
3189 if (len > (int) sizeof ("/lib/gcc-lib/") - 1
3190 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3192 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc-lib/") + 1;
3193 if (IS_DIR_SEPARATOR (*temp)
3194 && strncmp (temp + 1, "lib", 3) == 0
3195 && IS_DIR_SEPARATOR (temp[4])
3196 && strncmp (temp + 5, "gcc-lib", 7) == 0)
3197 len -= sizeof ("/lib/gcc-lib/") - 1;
3200 set_std_prefix (gcc_exec_prefix, len);
3201 add_prefix (&exec_prefixes, gcc_exec_prefix, "GCC",
3202 PREFIX_PRIORITY_LAST, 0, NULL);
3203 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3204 PREFIX_PRIORITY_LAST, 0, NULL);
3207 /* COMPILER_PATH and LIBRARY_PATH have values
3208 that are lists of directory names with colons. */
3210 GET_ENV_PATH_LIST (temp, "COMPILER_PATH");
3213 const char *startp, *endp;
3214 char *nstore = (char *) alloca (strlen (temp) + 3);
3216 startp = endp = temp;
3219 if (*endp == PATH_SEPARATOR || *endp == 0)
3221 strncpy (nstore, startp, endp - startp);
3223 strcpy (nstore, concat (".", dir_separator_str, NULL));
3224 else if (!IS_DIR_SEPARATOR (endp[-1]))
3226 nstore[endp - startp] = DIR_SEPARATOR;
3227 nstore[endp - startp + 1] = 0;
3230 nstore[endp - startp] = 0;
3231 add_prefix (&exec_prefixes, nstore, 0,
3232 PREFIX_PRIORITY_LAST, 0, NULL);
3233 add_prefix (&include_prefixes,
3234 concat (nstore, "include", NULL),
3235 0, PREFIX_PRIORITY_LAST, 0, NULL);
3238 endp = startp = endp + 1;
3245 GET_ENV_PATH_LIST (temp, LIBRARY_PATH_ENV);
3246 if (temp && *cross_compile == '0')
3248 const char *startp, *endp;
3249 char *nstore = (char *) alloca (strlen (temp) + 3);
3251 startp = endp = temp;
3254 if (*endp == PATH_SEPARATOR || *endp == 0)
3256 strncpy (nstore, startp, endp - startp);
3258 strcpy (nstore, concat (".", dir_separator_str, NULL));
3259 else if (!IS_DIR_SEPARATOR (endp[-1]))
3261 nstore[endp - startp] = DIR_SEPARATOR;
3262 nstore[endp - startp + 1] = 0;
3265 nstore[endp - startp] = 0;
3266 add_prefix (&startfile_prefixes, nstore, NULL,
3267 PREFIX_PRIORITY_LAST, 0, NULL);
3270 endp = startp = endp + 1;
3277 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3278 GET_ENV_PATH_LIST (temp, "LPATH");
3279 if (temp && *cross_compile == '0')
3281 const char *startp, *endp;
3282 char *nstore = (char *) alloca (strlen (temp) + 3);
3284 startp = endp = temp;
3287 if (*endp == PATH_SEPARATOR || *endp == 0)
3289 strncpy (nstore, startp, endp - startp);
3291 strcpy (nstore, concat (".", dir_separator_str, NULL));
3292 else if (!IS_DIR_SEPARATOR (endp[-1]))
3294 nstore[endp - startp] = DIR_SEPARATOR;
3295 nstore[endp - startp + 1] = 0;
3298 nstore[endp - startp] = 0;
3299 add_prefix (&startfile_prefixes, nstore, NULL,
3300 PREFIX_PRIORITY_LAST, 0, NULL);
3303 endp = startp = endp + 1;
3310 /* Convert new-style -- options to old-style. */
3311 translate_options (&argc, &argv);
3313 /* Do language-specific adjustment/addition of flags. */
3314 lang_specific_driver (&argc, &argv, &added_libraries);
3316 /* Scan argv twice. Here, the first time, just count how many switches
3317 there will be in their vector, and how many input files in theirs.
3318 Also parse any switches that determine the configuration name, such as -b.
3319 Here we also parse the switches that cc itself uses (e.g. -v). */
3321 for (i = 1; i < argc; i++)
3323 if (! strcmp (argv[i], "-dumpspecs"))
3325 struct spec_list *sl;
3327 for (sl = specs; sl; sl = sl->next)
3328 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3329 if (link_command_spec)
3330 printf ("*link_command:\n%s\n\n", link_command_spec);
3333 else if (! strcmp (argv[i], "-dumpversion"))
3335 printf ("%s\n", spec_version);
3338 else if (! strcmp (argv[i], "-dumpmachine"))
3340 printf ("%s\n", spec_machine);
3343 else if (strcmp (argv[i], "-fversion") == 0)
3345 /* translate_options () has turned --version into -fversion. */
3346 printf (_("%s (GCC) %s\n"), programname, version_string);
3347 fputs (_("Copyright (C) 2002 Free Software Foundation, Inc.\n"),
3349 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
3350 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
3354 else if (strcmp (argv[i], "-fhelp") == 0)
3356 /* translate_options () has turned --help into -fhelp. */
3357 print_help_list = 1;
3359 /* We will be passing a dummy file on to the sub-processes. */
3363 /* CPP driver cannot obtain switch from cc1_options. */
3365 add_preprocessor_option ("--help", 6);
3366 add_assembler_option ("--help", 6);
3367 add_linker_option ("--help", 6);
3369 else if (strcmp (argv[i], "-ftarget-help") == 0)
3371 /* translate_options() has turned --target-help into -ftarget-help. */
3372 target_help_flag = 1;
3374 /* We will be passing a dummy file on to the sub-processes. */
3378 /* CPP driver cannot obtain switch from cc1_options. */
3380 add_preprocessor_option ("--target-help", 13);
3381 add_assembler_option ("--target-help", 13);
3382 add_linker_option ("--target-help", 13);
3384 else if (! strcmp (argv[i], "-pass-exit-codes"))
3386 pass_exit_codes = 1;
3389 else if (! strcmp (argv[i], "-print-search-dirs"))
3390 print_search_dirs = 1;
3391 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3392 print_file_name = "libgcc.a";
3393 else if (! strncmp (argv[i], "-print-file-name=", 17))
3394 print_file_name = argv[i] + 17;
3395 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3396 print_prog_name = argv[i] + 17;
3397 else if (! strcmp (argv[i], "-print-multi-lib"))
3398 print_multi_lib = 1;
3399 else if (! strcmp (argv[i], "-print-multi-directory"))
3400 print_multi_directory = 1;
3401 else if (! strncmp (argv[i], "-Wa,", 4))
3404 /* Pass the rest of this option to the assembler. */
3406 /* Split the argument at commas. */
3408 for (j = 4; argv[i][j]; j++)
3409 if (argv[i][j] == ',')
3411 add_assembler_option (argv[i] + prev, j - prev);
3415 /* Record the part after the last comma. */
3416 add_assembler_option (argv[i] + prev, j - prev);
3418 else if (! strncmp (argv[i], "-Wp,", 4))
3421 /* Pass the rest of this option to the preprocessor. */
3423 /* Split the argument at commas. */
3425 for (j = 4; argv[i][j]; j++)
3426 if (argv[i][j] == ',')
3428 add_preprocessor_option (argv[i] + prev, j - prev);
3432 /* Record the part after the last comma. */
3433 add_preprocessor_option (argv[i] + prev, j - prev);
3435 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3436 /* The +e options to the C++ front-end. */
3438 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3441 /* Split the argument at commas. */
3442 for (j = 3; argv[i][j]; j++)
3443 n_infiles += (argv[i][j] == ',');
3445 else if (strcmp (argv[i], "-Xlinker") == 0)
3448 fatal ("argument to `-Xlinker' is missing");
3453 else if (strcmp (argv[i], "-l") == 0)
3456 fatal ("argument to `-l' is missing");
3461 else if (strncmp (argv[i], "-l", 2) == 0)
3463 else if (strcmp (argv[i], "-save-temps") == 0)
3465 save_temps_flag = 1;
3468 else if (strcmp (argv[i], "-specs") == 0)
3470 struct user_specs *user = (struct user_specs *)
3471 xmalloc (sizeof (struct user_specs));
3473 fatal ("argument to `-specs' is missing");
3475 user->next = (struct user_specs *) 0;
3476 user->filename = argv[i];
3477 if (user_specs_tail)
3478 user_specs_tail->next = user;
3480 user_specs_head = user;
3481 user_specs_tail = user;
3483 else if (strncmp (argv[i], "-specs=", 7) == 0)
3485 struct user_specs *user = (struct user_specs *)
3486 xmalloc (sizeof (struct user_specs));
3487 if (strlen (argv[i]) == 7)
3488 fatal ("argument to `-specs=' is missing");
3490 user->next = (struct user_specs *) 0;
3491 user->filename = argv[i] + 7;
3492 if (user_specs_tail)
3493 user_specs_tail->next = user;
3495 user_specs_head = user;
3496 user_specs_tail = user;
3498 else if (strcmp (argv[i], "-time") == 0)
3500 else if (strcmp (argv[i], "-###") == 0)
3502 /* This is similar to -v except that there is no execution
3503 of the commands and the echoed arguments are quoted. It
3504 is intended for use in shell scripts to capture the
3505 driver-generated command line. */
3506 verbose_only_flag++;
3509 else if (argv[i][0] == '-' && argv[i][1] != 0)
3511 const char *p = &argv[i][1];
3518 if (p[1] == 0 && i + 1 == argc)
3519 fatal ("argument to `-b' is missing");
3521 spec_machine = argv[++i];
3523 spec_machine = p + 1;
3525 warn_std_ptr = &warn_std;
3533 if (p[1] == 0 && i + 1 == argc)
3534 fatal ("argument to `-B' is missing");
3540 len = strlen (value);
3542 /* Catch the case where the user has forgotten to append a
3543 directory separator to the path. Note, they may be using
3544 -B to add an executable name prefix, eg "i386-elf-", in
3545 order to distinguish between multiple installations of
3546 GCC in the same directory. Hence we must check to see
3547 if appending a directory separator actually makes a
3548 valid directory name. */
3549 if (! IS_DIR_SEPARATOR (value [len - 1])
3550 && is_directory (value, "", 0))
3552 char *tmp = xmalloc (len + 2);
3553 strcpy (tmp, value);
3554 tmp[len] = DIR_SEPARATOR;
3559 /* As a kludge, if the arg is "[foo/]stageN/", just
3560 add "[foo/]include" to the include prefix. */
3563 && (IS_DIR_SEPARATOR (value[len - 8]))))
3564 && strncmp (value + len - 7, "stage", 5) == 0
3565 && ISDIGIT (value[len - 2])
3566 && (IS_DIR_SEPARATOR (value[len - 1])))
3569 add_prefix (&include_prefixes, "include", NULL,
3570 PREFIX_PRIORITY_B_OPT, 0, NULL);
3573 char * string = xmalloc (len + 1);
3575 strncpy (string, value, len - 7);
3576 strcpy (string + len - 7, "include");
3577 add_prefix (&include_prefixes, string, NULL,
3578 PREFIX_PRIORITY_B_OPT, 0, NULL);
3582 add_prefix (&exec_prefixes, value, NULL,
3583 PREFIX_PRIORITY_B_OPT, 0, &warn_B);
3584 add_prefix (&startfile_prefixes, value, NULL,
3585 PREFIX_PRIORITY_B_OPT, 0, &warn_B);
3586 add_prefix (&include_prefixes, concat (value, "include", NULL),
3587 NULL, PREFIX_PRIORITY_B_OPT, 0, NULL);
3592 case 'v': /* Print our subcommands and print versions. */
3594 /* If they do anything other than exactly `-v', don't set
3595 verbose_flag; rather, continue on to give the error. */
3603 if (p[1] == 0 && i + 1 == argc)
3604 fatal ("argument to `-V' is missing");
3606 spec_version = argv[++i];
3608 spec_version = p + 1;
3609 compiler_version = spec_version;
3610 warn_std_ptr = &warn_std;
3612 /* Validate the version number. Use the same checks
3613 done when inserting it into a spec.
3615 The format of the version string is
3616 ([^0-9]*-)?[0-9]+[.][0-9]+([.][0-9]+)?([- ].*)? */
3618 const char *v = compiler_version;
3620 /* Ignore leading non-digits. i.e. "foo-" in "foo-2.7.2". */
3621 while (! ISDIGIT (*v))
3624 if (v > compiler_version && v[-1] != '-')
3625 fatal ("invalid version number format");
3627 /* Set V after the first period. */
3628 while (ISDIGIT (*v))
3632 fatal ("invalid version number format");
3635 while (ISDIGIT (*v))
3638 if (*v != 0 && *v != ' ' && *v != '.' && *v != '-')
3639 fatal ("invalid version number format");
3655 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3660 /* Forward scan, just in case -S or -c is specified
3667 if (argv[j][0] == '-')
3669 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
3675 else if ((skip = SWITCH_TAKES_ARG (argv[j][1])))
3676 j += skip - (argv[j][2] != 0);
3677 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1)))
3684 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3686 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0);
3688 argv[i] = convert_filename (argv[i], ! have_c, 0);
3695 #ifdef MODIFY_TARGET_NAME
3696 is_modify_target_name = 0;
3698 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3699 if (! strcmp (argv[i], modify_target[j].sw))
3702 = (char *) xmalloc (strlen (modify_target[j].str)
3703 + strlen (spec_machine));
3706 int made_addition = 0;
3708 is_modify_target_name = 1;
3709 for (p = spec_machine, q = new_name; *p != 0; )
3711 if (modify_target[j].add_del == DELETE
3712 && (! strncmp (q, modify_target[j].str,
3713 strlen (modify_target[j].str))))
3714 p += strlen (modify_target[j].str);
3715 else if (modify_target[j].add_del == ADD
3716 && ! made_addition && *p == '-')
3718 for (r = modify_target[j].str; *r != 0; )
3726 spec_machine = new_name;
3729 if (is_modify_target_name)
3735 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
3736 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
3737 else if (WORD_SWITCH_TAKES_ARG (p))
3738 i += WORD_SWITCH_TAKES_ARG (p);
3748 if (have_c && have_o && lang_n_infiles > 1)
3749 fatal ("cannot specify -o with -c or -S and multiple compilations");
3751 /* Set up the search paths before we go looking for config files. */
3753 /* These come before the md prefixes so that we will find gcc's subcommands
3754 (such as cpp) rather than those of the host system. */
3755 /* Use 2 as fourth arg meaning try just the machine as a suffix,
3756 as well as trying the machine and the version. */
3758 add_prefix (&exec_prefixes, standard_exec_prefix, "GCC",
3759 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3760 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3761 PREFIX_PRIORITY_LAST, 2, warn_std_ptr);
3762 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS",
3763 PREFIX_PRIORITY_LAST, 2, warn_std_ptr);
3766 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3767 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3768 add_prefix (&startfile_prefixes, standard_exec_prefix_1, "BINUTILS",
3769 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3771 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3772 dir_separator_str, NULL);
3774 /* If tooldir is relative, base it on exec_prefixes. A relative
3775 tooldir lets us move the installed tree as a unit.
3777 If GCC_EXEC_PREFIX is defined, then we want to add two relative
3778 directories, so that we can search both the user specified directory
3779 and the standard place. */
3781 if (!IS_ABSOLUTE_PATHNAME (tooldir_prefix))
3783 if (gcc_exec_prefix)
3785 char *gcc_exec_tooldir_prefix
3786 = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
3787 spec_version, dir_separator_str, tooldir_prefix, NULL);
3789 add_prefix (&exec_prefixes,
3790 concat (gcc_exec_tooldir_prefix, "bin",
3791 dir_separator_str, NULL),
3792 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
3793 add_prefix (&startfile_prefixes,
3794 concat (gcc_exec_tooldir_prefix, "lib",
3795 dir_separator_str, NULL),
3796 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
3799 tooldir_prefix = concat (standard_exec_prefix, spec_machine,
3800 dir_separator_str, spec_version,
3801 dir_separator_str, tooldir_prefix, NULL);
3804 add_prefix (&exec_prefixes,
3805 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3806 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
3807 add_prefix (&startfile_prefixes,
3808 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3809 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
3811 /* More prefixes are enabled in main, after we read the specs file
3812 and determine whether this is cross-compilation or not. */
3814 /* Then create the space for the vectors and scan again. */
3816 switches = ((struct switchstr *)
3817 xmalloc ((n_switches + 1) * sizeof (struct switchstr)));
3818 infiles = (struct infile *) xmalloc ((n_infiles + 1) * sizeof (struct infile));
3821 last_language_n_infiles = -1;
3823 /* This, time, copy the text of each switch and store a pointer
3824 to the copy in the vector of switches.
3825 Store all the infiles in their vector. */
3827 for (i = 1; i < argc; i++)
3829 /* Just skip the switches that were handled by the preceding loop. */
3830 #ifdef MODIFY_TARGET_NAME
3831 is_modify_target_name = 0;
3833 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3834 if (! strcmp (argv[i], modify_target[j].sw))
3835 is_modify_target_name = 1;
3837 if (is_modify_target_name)
3841 if (! strncmp (argv[i], "-Wa,", 4))
3843 else if (! strncmp (argv[i], "-Wp,", 4))
3845 else if (! strcmp (argv[i], "-pass-exit-codes"))
3847 else if (! strcmp (argv[i], "-print-search-dirs"))
3849 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3851 else if (! strncmp (argv[i], "-print-file-name=", 17))
3853 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3855 else if (! strcmp (argv[i], "-print-multi-lib"))
3857 else if (! strcmp (argv[i], "-print-multi-directory"))
3859 else if (! strcmp (argv[i], "-ftarget-help"))
3861 else if (! strcmp (argv[i], "-fhelp"))
3863 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3865 /* Compensate for the +e options to the C++ front-end;
3866 they're there simply for cfront call-compatibility. We do
3867 some magic in default_compilers to pass them down properly.
3868 Note we deliberately start at the `+' here, to avoid passing
3869 -e0 or -e1 down into the linker. */
3870 switches[n_switches].part1 = &argv[i][0];
3871 switches[n_switches].args = 0;
3872 switches[n_switches].live_cond = SWITCH_OK;
3873 switches[n_switches].validated = 0;
3876 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3879 /* Split the argument at commas. */
3881 for (j = 4; argv[i][j]; j++)
3882 if (argv[i][j] == ',')
3884 infiles[n_infiles].language = "*";
3885 infiles[n_infiles++].name
3886 = save_string (argv[i] + prev, j - prev);
3889 /* Record the part after the last comma. */
3890 infiles[n_infiles].language = "*";
3891 infiles[n_infiles++].name = argv[i] + prev;
3893 else if (strcmp (argv[i], "-Xlinker") == 0)
3895 infiles[n_infiles].language = "*";
3896 infiles[n_infiles++].name = argv[++i];
3898 else if (strcmp (argv[i], "-l") == 0)
3899 { /* POSIX allows separation of -l and the lib arg;
3900 canonicalize by concatenating -l with its arg */
3901 infiles[n_infiles].language = "*";
3902 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL);
3904 else if (strncmp (argv[i], "-l", 2) == 0)
3906 infiles[n_infiles].language = "*";
3907 infiles[n_infiles++].name = argv[i];
3909 else if (strcmp (argv[i], "-specs") == 0)
3911 else if (strncmp (argv[i], "-specs=", 7) == 0)
3913 else if (strcmp (argv[i], "-time") == 0)
3915 else if ((save_temps_flag || report_times)
3916 && strcmp (argv[i], "-pipe") == 0)
3918 /* -save-temps overrides -pipe, so that temp files are produced */
3919 if (save_temps_flag)
3920 error ("warning: -pipe ignored because -save-temps specified");
3921 /* -time overrides -pipe because we can't get correct stats when
3922 multiple children are running at once. */
3923 else if (report_times)
3924 error ("warning: -pipe ignored because -time specified");
3926 else if (strcmp (argv[i], "-###") == 0)
3928 else if (argv[i][0] == '-' && argv[i][1] != 0)
3930 const char *p = &argv[i][1];
3935 if (p[1] == 0 && i + 1 == argc)
3936 fatal ("argument to `-x' is missing");
3938 spec_lang = argv[++i];
3941 if (! strcmp (spec_lang, "none"))
3942 /* Suppress the warning if -xnone comes after the last input
3943 file, because alternate command interfaces like g++ might
3944 find it useful to place -xnone after each input file. */
3947 last_language_n_infiles = n_infiles;
3950 switches[n_switches].part1 = p;
3951 /* Deal with option arguments in separate argv elements. */
3952 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
3953 || WORD_SWITCH_TAKES_ARG (p))
3956 int n_args = WORD_SWITCH_TAKES_ARG (p);
3960 /* Count only the option arguments in separate argv elements. */
3961 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
3963 if (i + n_args >= argc)
3964 fatal ("argument to `-%s' is missing", p);
3965 switches[n_switches].args
3966 = (const char **) xmalloc ((n_args + 1) * sizeof(const char *));
3968 switches[n_switches].args[j++] = argv[++i];
3969 /* Null-terminate the vector. */
3970 switches[n_switches].args[j] = 0;
3972 else if (strchr (switches_need_spaces, c))
3974 /* On some systems, ld cannot handle some options without
3975 a space. So split the option from its argument. */
3976 char *part1 = (char *) xmalloc (2);
3980 switches[n_switches].part1 = part1;
3981 switches[n_switches].args
3982 = (const char **) xmalloc (2 * sizeof (const char *));
3983 switches[n_switches].args[0] = xstrdup (p+1);
3984 switches[n_switches].args[1] = 0;
3987 switches[n_switches].args = 0;
3989 switches[n_switches].live_cond = SWITCH_OK;
3990 switches[n_switches].validated = 0;
3991 switches[n_switches].ordering = 0;
3992 /* These are always valid, since gcc.c itself understands it. */
3993 if (!strcmp (p, "save-temps")
3994 || !strcmp (p, "static-libgcc")
3995 || !strcmp (p, "shared-libgcc"))
3996 switches[n_switches].validated = 1;
3999 char ch = switches[n_switches].part1[0];
4000 if (ch == 'V' || ch == 'b' || ch == 'B')
4001 switches[n_switches].validated = 1;
4007 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4008 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
4011 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
4013 perror_with_name (argv[i]);
4018 infiles[n_infiles].language = spec_lang;
4019 infiles[n_infiles++].name = argv[i];
4024 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4025 error ("warning: `-x %s' after last input file has no effect", spec_lang);
4027 /* Ensure we only invoke each subprocess once. */
4028 if (target_help_flag || print_help_list)
4032 /* Create a dummy input file, so that we can pass --target-help on to
4033 the various sub-processes. */
4034 infiles[0].language = "c";
4035 infiles[0].name = "help-dummy";
4037 if (target_help_flag)
4039 switches[n_switches].part1 = "--target-help";
4040 switches[n_switches].args = 0;
4041 switches[n_switches].live_cond = SWITCH_OK;
4042 switches[n_switches].validated = 0;
4047 if (print_help_list)
4049 switches[n_switches].part1 = "--help";
4050 switches[n_switches].args = 0;
4051 switches[n_switches].live_cond = SWITCH_OK;
4052 switches[n_switches].validated = 0;
4058 switches[n_switches].part1 = 0;
4059 infiles[n_infiles].name = 0;
4062 /* Store switches not filtered out by %{<S} in spec in COLLECT_GCC_OPTIONS
4063 and place that in the environment. */
4066 set_collect_gcc_options ()
4071 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4073 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4074 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4077 for (i = 0; (int) i < n_switches; i++)
4079 const char *const *args;
4082 obstack_grow (&collect_obstack, " ", 1);
4086 /* Ignore elided switches. */
4087 if (switches[i].live_cond == SWITCH_IGNORE)
4090 obstack_grow (&collect_obstack, "'-", 2);
4091 q = switches[i].part1;
4092 while ((p = strchr (q, '\'')))
4094 obstack_grow (&collect_obstack, q, p - q);
4095 obstack_grow (&collect_obstack, "'\\''", 4);
4098 obstack_grow (&collect_obstack, q, strlen (q));
4099 obstack_grow (&collect_obstack, "'", 1);
4101 for (args = switches[i].args; args && *args; args++)
4103 obstack_grow (&collect_obstack, " '", 2);
4105 while ((p = strchr (q, '\'')))
4107 obstack_grow (&collect_obstack, q, p - q);
4108 obstack_grow (&collect_obstack, "'\\''", 4);
4111 obstack_grow (&collect_obstack, q, strlen (q));
4112 obstack_grow (&collect_obstack, "'", 1);
4115 obstack_grow (&collect_obstack, "\0", 1);
4116 putenv (obstack_finish (&collect_obstack));
4119 /* Process a spec string, accumulating and running commands. */
4121 /* These variables describe the input file name.
4122 input_file_number is the index on outfiles of this file,
4123 so that the output file name can be stored for later use by %o.
4124 input_basename is the start of the part of the input file
4125 sans all directory names, and basename_length is the number
4126 of characters starting there excluding the suffix .c or whatever. */
4128 const char *input_filename;
4129 static int input_file_number;
4130 size_t input_filename_length;
4131 static int basename_length;
4132 static int suffixed_basename_length;
4133 static const char *input_basename;
4134 static const char *input_suffix;
4135 static struct stat input_stat;
4136 static int input_stat_set;
4138 /* The compiler used to process the current input file. */
4139 static struct compiler *input_file_compiler;
4141 /* These are variables used within do_spec and do_spec_1. */
4143 /* Nonzero if an arg has been started and not yet terminated
4144 (with space, tab or newline). */
4145 static int arg_going;
4147 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4148 is a temporary file name. */
4149 static int delete_this_arg;
4151 /* Nonzero means %w has been seen; the next arg to be terminated
4152 is the output file name of this compilation. */
4153 static int this_is_output_file;
4155 /* Nonzero means %s has been seen; the next arg to be terminated
4156 is the name of a library file and we should try the standard
4157 search dirs for it. */
4158 static int this_is_library_file;
4160 /* Nonzero means that the input of this command is coming from a pipe. */
4161 static int input_from_pipe;
4163 /* Nonnull means substitute this for any suffix when outputting a switches
4165 static const char *suffix_subst;
4167 /* Process the spec SPEC and run the commands specified therein.
4168 Returns 0 if the spec is successfully processed; -1 if failed. */
4178 delete_this_arg = 0;
4179 this_is_output_file = 0;
4180 this_is_library_file = 0;
4181 input_from_pipe = 0;
4182 suffix_subst = NULL;
4184 value = do_spec_1 (spec, 0, NULL);
4186 /* Force out any unfinished command.
4187 If -pipe, this forces out the last command if it ended in `|'. */
4190 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4193 set_collect_gcc_options ();
4195 if (argbuf_index > 0)
4202 /* Process the sub-spec SPEC as a portion of a larger spec.
4203 This is like processing a whole spec except that we do
4204 not initialize at the beginning and we do not supply a
4205 newline by default at the end.
4206 INSWITCH nonzero means don't process %-sequences in SPEC;
4207 in this case, % is treated as an ordinary character.
4208 This is used while substituting switches.
4209 INSWITCH nonzero also causes SPC not to terminate an argument.
4211 Value is zero unless a line was finished
4212 and the command on that line reported an error. */
4215 do_spec_1 (spec, inswitch, soft_matched_part)
4218 const char *soft_matched_part;
4220 const char *p = spec;
4227 /* If substituting a switch, treat all chars like letters.
4228 Otherwise, NL, SPC, TAB and % are special. */
4229 switch (inswitch ? 'a' : c)
4232 /* End of line: finish any pending argument,
4233 then run the pending command if one has been started. */
4236 obstack_1grow (&obstack, 0);
4237 string = obstack_finish (&obstack);
4238 if (this_is_library_file)
4239 string = find_file (string);
4240 store_arg (string, delete_this_arg, this_is_output_file);
4241 if (this_is_output_file)
4242 outfiles[input_file_number] = string;
4246 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4248 for (i = 0; i < n_switches; i++)
4249 if (!strcmp (switches[i].part1, "pipe"))
4252 /* A `|' before the newline means use a pipe here,
4253 but only if -pipe was specified.
4254 Otherwise, execute now and don't pass the `|' as an arg. */
4257 input_from_pipe = 1;
4258 switches[i].validated = 1;
4265 set_collect_gcc_options ();
4267 if (argbuf_index > 0)
4273 /* Reinitialize for a new command, and for a new argument. */
4276 delete_this_arg = 0;
4277 this_is_output_file = 0;
4278 this_is_library_file = 0;
4279 input_from_pipe = 0;
4283 /* End any pending argument. */
4286 obstack_1grow (&obstack, 0);
4287 string = obstack_finish (&obstack);
4288 if (this_is_library_file)
4289 string = find_file (string);
4290 store_arg (string, delete_this_arg, this_is_output_file);
4291 if (this_is_output_file)
4292 outfiles[input_file_number] = string;
4296 obstack_1grow (&obstack, c);
4302 /* Space or tab ends an argument if one is pending. */
4305 obstack_1grow (&obstack, 0);
4306 string = obstack_finish (&obstack);
4307 if (this_is_library_file)
4308 string = find_file (string);
4309 store_arg (string, delete_this_arg, this_is_output_file);
4310 if (this_is_output_file)
4311 outfiles[input_file_number] = string;
4313 /* Reinitialize for a new argument. */
4315 delete_this_arg = 0;
4316 this_is_output_file = 0;
4317 this_is_library_file = 0;
4324 fatal ("invalid specification! Bug in cc");
4327 obstack_grow (&obstack, input_basename, basename_length);
4332 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4337 delete_this_arg = 2;
4340 /* Dump out the directories specified with LIBRARY_PATH,
4341 followed by the absolute directories
4342 that we search for startfiles. */
4345 struct prefix_list *pl = startfile_prefixes.plist;
4346 size_t bufsize = 100;
4347 char *buffer = (char *) xmalloc (bufsize);
4350 for (; pl; pl = pl->next)
4352 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4353 /* Used on systems which record the specified -L dirs
4354 and use them to search for dynamic linking. */
4355 /* Relative directories always come from -B,
4356 and it is better not to use them for searching
4357 at run time. In particular, stage1 loses. */
4358 if (!IS_ABSOLUTE_PATHNAME (pl->prefix))
4361 /* Try subdirectory if there is one. */
4362 if (multilib_dir != NULL)
4366 if (strlen (pl->prefix) + strlen (machine_suffix)
4368 bufsize = (strlen (pl->prefix)
4369 + strlen (machine_suffix)) * 2 + 1;
4370 buffer = (char *) xrealloc (buffer, bufsize);
4371 strcpy (buffer, pl->prefix);
4372 strcat (buffer, machine_suffix);
4373 if (is_directory (buffer, multilib_dir, 1))
4375 do_spec_1 ("-L", 0, NULL);
4376 #ifdef SPACE_AFTER_L_OPTION
4377 do_spec_1 (" ", 0, NULL);
4379 do_spec_1 (buffer, 1, NULL);
4380 do_spec_1 (multilib_dir, 1, NULL);
4381 /* Make this a separate argument. */
4382 do_spec_1 (" ", 0, NULL);
4385 if (!pl->require_machine_suffix)
4387 if (is_directory (pl->prefix, multilib_dir, 1))
4389 do_spec_1 ("-L", 0, NULL);
4390 #ifdef SPACE_AFTER_L_OPTION
4391 do_spec_1 (" ", 0, NULL);
4393 do_spec_1 (pl->prefix, 1, NULL);
4394 do_spec_1 (multilib_dir, 1, NULL);
4395 /* Make this a separate argument. */
4396 do_spec_1 (" ", 0, NULL);
4402 if (is_directory (pl->prefix, machine_suffix, 1))
4404 do_spec_1 ("-L", 0, NULL);
4405 #ifdef SPACE_AFTER_L_OPTION
4406 do_spec_1 (" ", 0, NULL);
4408 do_spec_1 (pl->prefix, 1, NULL);
4409 /* Remove slash from machine_suffix. */
4410 if (strlen (machine_suffix) >= bufsize)
4411 bufsize = strlen (machine_suffix) * 2 + 1;
4412 buffer = (char *) xrealloc (buffer, bufsize);
4413 strcpy (buffer, machine_suffix);
4414 idx = strlen (buffer);
4415 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4416 buffer[idx - 1] = 0;
4417 do_spec_1 (buffer, 1, NULL);
4418 /* Make this a separate argument. */
4419 do_spec_1 (" ", 0, NULL);
4422 if (!pl->require_machine_suffix)
4424 if (is_directory (pl->prefix, "", 1))
4426 do_spec_1 ("-L", 0, NULL);
4427 #ifdef SPACE_AFTER_L_OPTION
4428 do_spec_1 (" ", 0, NULL);
4430 /* Remove slash from pl->prefix. */
4431 if (strlen (pl->prefix) >= bufsize)
4432 bufsize = strlen (pl->prefix) * 2 + 1;
4433 buffer = (char *) xrealloc (buffer, bufsize);
4434 strcpy (buffer, pl->prefix);
4435 idx = strlen (buffer);
4436 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4437 buffer[idx - 1] = 0;
4438 do_spec_1 (buffer, 1, NULL);
4439 /* Make this a separate argument. */
4440 do_spec_1 (" ", 0, NULL);
4449 /* %efoo means report an error with `foo' as error message
4450 and don't execute any more commands for this file. */
4454 while (*p != 0 && *p != '\n')
4456 buf = (char *) alloca (p - q + 1);
4457 strncpy (buf, q, p - q);
4464 /* %nfoo means report an notice with `foo' on stderr. */
4468 while (*p != 0 && *p != '\n')
4470 buf = (char *) alloca (p - q + 1);
4471 strncpy (buf, q, p - q);
4473 notice ("%s\n", buf);
4483 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is defined,
4484 and it is not a directory, and it is writable, use it.
4485 Otherwise, fall through and treat this like any other
4488 if ((!save_temps_flag)
4489 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4490 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4492 obstack_grow (&obstack, HOST_BIT_BUCKET,
4493 strlen (HOST_BIT_BUCKET));
4494 delete_this_arg = 0;
4503 struct temp_name *t;
4505 const char *suffix = p;
4506 char *saved_suffix = NULL;
4508 while (*p == '.' || ISALPHA ((unsigned char) *p))
4510 suffix_length = p - suffix;
4511 if (p[0] == '%' && p[1] == 'O')
4514 /* We don't support extra suffix characters after %O. */
4515 if (*p == '.' || ISALPHA ((unsigned char) *p))
4517 if (suffix_length == 0)
4518 suffix = TARGET_OBJECT_SUFFIX;
4522 = (char *) xmalloc (suffix_length
4523 + strlen (TARGET_OBJECT_SUFFIX));
4524 strncpy (saved_suffix, suffix, suffix_length);
4525 strcpy (saved_suffix + suffix_length,
4526 TARGET_OBJECT_SUFFIX);
4528 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4531 /* If the input_filename has the same suffix specified
4532 for the %g, %u, or %U, and -save-temps is specified,
4533 we could end up using that file as an intermediate
4534 thus clobbering the user's source file (.e.g.,
4535 gcc -save-temps foo.s would clobber foo.s with the
4536 output of cpp0). So check for this condition and
4537 generate a temp file as the intermediate. */
4539 if (save_temps_flag)
4541 temp_filename_length = basename_length + suffix_length;
4542 temp_filename = alloca (temp_filename_length + 1);
4543 strncpy ((char *) temp_filename, input_basename, basename_length);
4544 strncpy ((char *) temp_filename + basename_length, suffix,
4546 *((char *) temp_filename + temp_filename_length) = '\0';
4547 if (strcmp (temp_filename, input_filename) != 0)
4549 struct stat st_temp;
4551 /* Note, set_input() resets input_stat_set to 0. */
4552 if (input_stat_set == 0)
4554 input_stat_set = stat (input_filename, &input_stat);
4555 if (input_stat_set >= 0)
4559 /* If we have the stat for the input_filename
4560 and we can do the stat for the temp_filename
4561 then the they could still refer to the same
4562 file if st_dev/st_ino's are the same. */
4564 if (input_stat_set != 1
4565 || stat (temp_filename, &st_temp) < 0
4566 || input_stat.st_dev != st_temp.st_dev
4567 || input_stat.st_ino != st_temp.st_ino)
4569 temp_filename = save_string (temp_filename,
4570 temp_filename_length + 1);
4571 obstack_grow (&obstack, temp_filename,
4572 temp_filename_length);
4579 /* See if we already have an association of %g/%u/%U and
4581 for (t = temp_names; t; t = t->next)
4582 if (t->length == suffix_length
4583 && strncmp (t->suffix, suffix, suffix_length) == 0
4584 && t->unique == (c != 'g'))
4587 /* Make a new association if needed. %u and %j
4589 if (t == 0 || c == 'u' || c == 'j')
4593 t = (struct temp_name *) xmalloc (sizeof (struct temp_name));
4594 t->next = temp_names;
4597 t->length = suffix_length;
4600 t->suffix = saved_suffix;
4601 saved_suffix = NULL;
4604 t->suffix = save_string (suffix, suffix_length);
4605 t->unique = (c != 'g');
4606 temp_filename = make_temp_file (t->suffix);
4607 temp_filename_length = strlen (temp_filename);
4608 t->filename = temp_filename;
4609 t->filename_length = temp_filename_length;
4613 free (saved_suffix);
4615 obstack_grow (&obstack, t->filename, t->filename_length);
4616 delete_this_arg = 1;
4622 obstack_grow (&obstack, input_filename, input_filename_length);
4628 struct prefix_list *pl = include_prefixes.plist;
4630 if (gcc_exec_prefix)
4632 do_spec_1 ("-iprefix", 1, NULL);
4633 /* Make this a separate argument. */
4634 do_spec_1 (" ", 0, NULL);
4635 do_spec_1 (gcc_exec_prefix, 1, NULL);
4636 do_spec_1 (" ", 0, NULL);
4639 for (; pl; pl = pl->next)
4641 do_spec_1 ("-isystem", 1, NULL);
4642 /* Make this a separate argument. */
4643 do_spec_1 (" ", 0, NULL);
4644 do_spec_1 (pl->prefix, 1, NULL);
4645 do_spec_1 (" ", 0, NULL);
4652 int max = n_infiles;
4653 max += lang_specific_extra_outfiles;
4655 for (i = 0; i < max; i++)
4657 store_arg (outfiles[i], 0, 0);
4662 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4667 this_is_library_file = 1;
4671 this_is_output_file = 1;
4676 int cur_index = argbuf_index;
4677 /* Handle the {...} following the %W. */
4680 p = handle_braces (p + 1);
4683 /* If any args were output, mark the last one for deletion
4685 if (argbuf_index != cur_index)
4686 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
4690 /* %x{OPTION} records OPTION for %X to output. */
4696 /* Skip past the option value and make a copy. */
4701 string = save_string (p1 + 1, p - p1 - 2);
4703 /* See if we already recorded this option. */
4704 for (i = 0; i < n_linker_options; i++)
4705 if (! strcmp (string, linker_options[i]))
4711 /* This option is new; add it. */
4712 add_linker_option (string, strlen (string));
4716 /* Dump out the options accumulated previously using %x. */
4718 for (i = 0; i < n_linker_options; i++)
4720 do_spec_1 (linker_options[i], 1, NULL);
4721 /* Make each accumulated option a separate argument. */
4722 do_spec_1 (" ", 0, NULL);
4726 /* Dump out the options accumulated previously using -Wa,. */
4728 for (i = 0; i < n_assembler_options; i++)
4730 do_spec_1 (assembler_options[i], 1, NULL);
4731 /* Make each accumulated option a separate argument. */
4732 do_spec_1 (" ", 0, NULL);
4736 /* Dump out the options accumulated previously using -Wp,. */
4738 for (i = 0; i < n_preprocessor_options; i++)
4740 do_spec_1 (preprocessor_options[i], 1, NULL);
4741 /* Make each accumulated option a separate argument. */
4742 do_spec_1 (" ", 0, NULL);
4746 /* Here are digits and numbers that just process
4747 a certain constant string as a spec. */
4750 value = do_spec_1 (cc1_spec, 0, NULL);
4756 value = do_spec_1 (cc1plus_spec, 0, NULL);
4762 value = do_spec_1 (asm_spec, 0, NULL);
4768 value = do_spec_1 (asm_final_spec, 0, NULL);
4775 const char *const spec
4776 = (input_file_compiler->cpp_spec
4777 ? input_file_compiler->cpp_spec
4779 value = do_spec_1 (spec, 0, NULL);
4786 value = do_spec_1 (endfile_spec, 0, NULL);
4792 value = do_spec_1 (link_spec, 0, NULL);
4798 value = do_spec_1 (lib_spec, 0, NULL);
4804 value = do_spec_1 (libgcc_spec, 0, NULL);
4810 if (multilib_dir && strcmp (multilib_dir, ".") != 0)
4816 len = strlen (multilib_dir);
4817 obstack_blank (&obstack, len + 1);
4818 p = obstack_next_free (&obstack) - (len + 1);
4821 for (q = multilib_dir; *q ; ++q, ++p)
4822 *p = (IS_DIR_SEPARATOR (*q) ? '_' : *q);
4828 char *x = (char *) alloca (strlen (cpp_predefines) + 1);
4832 /* Copy all of the -D options in CPP_PREDEFINES into BUF. */
4836 if (! strncmp (y, "-D", 2))
4837 /* Copy the whole option. */
4838 while (*y && *y != ' ' && *y != '\t')
4840 else if (*y == ' ' || *y == '\t')
4841 /* Copy whitespace to the result. */
4843 /* Don't copy other options. */
4850 value = do_spec_1 (buf, 0, NULL);
4858 char *x = (char *) alloca (strlen (cpp_predefines) * 4 + 1);
4862 /* Copy all of CPP_PREDEFINES into BUF,
4863 but force them all into the reserved name space if they
4864 aren't already there. The reserved name space is all
4865 identifiers beginning with two underscores or with one
4866 underscore and a capital letter. We do the forcing by
4867 adding up to two underscores to the beginning and end
4868 of each symbol. e.g. mips, _mips, mips_, and _mips_ all
4873 if (! strncmp (y, "-D", 2))
4882 && ! ISUPPER ((unsigned char) *(y + 1))))
4884 /* Stick __ at front of macro name. */
4888 /* Arrange to stick __ at the end as well. */
4892 /* Copy the macro name. */
4893 while (*y && *y != '=' && *y != ' ' && *y != '\t')
4906 /* Copy the value given, if any. */
4907 while (*y && *y != ' ' && *y != '\t')
4910 else if (*y == ' ' || *y == '\t')
4911 /* Copy whitespace to the result. */
4913 /* Don't copy -A options */
4919 /* Copy all of CPP_PREDEFINES into BUF,
4920 but put __ after every -D. */
4924 if (! strncmp (y, "-D", 2))
4930 && ! ISUPPER ((unsigned char) *(y + 1))))
4932 /* Stick -D__ at front of macro name. */
4939 /* Copy the macro name. */
4940 while (*y && *y != '=' && *y != ' ' && *y != '\t')
4943 /* Copy the value given, if any. */
4944 while (*y && *y != ' ' && *y != '\t')
4949 /* Do not copy this macro - we have just done it before */
4950 while (*y && *y != ' ' && *y != '\t')
4954 else if (*y == ' ' || *y == '\t')
4955 /* Copy whitespace to the result. */
4957 /* Don't copy -A options. */
4963 /* Copy all of the -A options in CPP_PREDEFINES into BUF. */
4967 if (! strncmp (y, "-A", 2))
4968 /* Copy the whole option. */
4969 while (*y && *y != ' ' && *y != '\t')
4971 else if (*y == ' ' || *y == '\t')
4972 /* Copy whitespace to the result. */
4974 /* Don't copy other options. */
4981 value = do_spec_1 (buf, 0, NULL);
4988 value = do_spec_1 (startfile_spec, 0, NULL);
4993 /* Here we define characters other than letters and digits. */
4996 p = handle_braces (p);
5002 obstack_1grow (&obstack, '%');
5009 while (p[len] && p[len] != ' ' && p[len] != '%')
5011 suffix_subst = save_string (p - 1, len + 1);
5017 if (soft_matched_part)
5019 do_spec_1 (soft_matched_part, 1, NULL);
5020 do_spec_1 (" ", 0, NULL);
5023 /* Catch the case where a spec string contains something like
5024 '%{foo:%*}'. ie there is no * in the pattern on the left
5025 hand side of the :. */
5026 error ("spec failure: '%%*' has not been initialized by pattern match");
5029 /* Process a string found as the value of a spec given by name.
5030 This feature allows individual machine descriptions
5031 to add and use their own specs.
5032 %[...] modifies -D options the way %P does;
5033 %(...) uses the spec unmodified. */
5035 error ("warning: use of obsolete %%[ operator in specs");
5038 const char *name = p;
5039 struct spec_list *sl;
5042 /* The string after the S/P is the name of a spec that is to be
5044 while (*p && *p != ')' && *p != ']')
5047 /* See if it's in the list. */
5048 for (len = p - name, sl = specs; sl; sl = sl->next)
5049 if (sl->name_len == len && !strncmp (sl->name, name, len))
5051 name = *(sl->ptr_spec);
5053 notice ("Processing spec %c%s%c, which is '%s'\n",
5054 c, sl->name, (c == '(') ? ')' : ']', name);
5063 value = do_spec_1 (name, 0, NULL);
5069 char *x = (char *) alloca (strlen (name) * 2 + 1);
5071 const char *y = name;
5074 /* Copy all of NAME into BUF, but put __ after
5075 every -D and at the end of each arg. */
5078 if (! strncmp (y, "-D", 2))
5089 && (*y == ' ' || *y == '\t' || *y == '='
5090 || *y == '}' || *y == 0))
5103 value = do_spec_1 (buf, 0, NULL);
5109 /* Discard the closing paren or bracket. */
5117 int c1 = *p++; /* Select first or second version number. */
5118 const char *v = compiler_version;
5120 static const char zeroc = '0';
5122 /* The format of the version string is
5123 ([^0-9]*-)?[0-9]+[.][0-9]+([.][0-9]+)?([- ].*)? */
5125 /* Ignore leading non-digits. i.e. "foo-" in "foo-2.7.2". */
5126 while (! ISDIGIT (*v))
5128 if (v > compiler_version && v[-1] != '-')
5131 /* If desired, advance to second version number. */
5134 /* Set V after the first period. */
5135 while (ISDIGIT (*v))
5142 /* If desired, advance to third version number.
5143 But don't complain if it's not present */
5146 /* Set V after the second period. */
5147 while (ISDIGIT (*v))
5149 if ((*v != 0) && (*v != ' ') && (*v != '.') && (*v != '-'))
5155 /* Set Q at the next period or at the end. */
5157 while (ISDIGIT (*q))
5159 if (*q != 0 && q > v && *q != ' ' && *q != '.' && *q != '-')
5163 /* Put that part into the command. */
5164 obstack_grow (&obstack, v, q - v);
5166 /* Default to "0" */
5167 obstack_grow (&obstack, &zeroc, 1);
5173 if (input_from_pipe)
5174 do_spec_1 ("-", 0, NULL);
5178 error ("spec failure: unrecognized spec option '%c'", c);
5184 /* Backslash: treat next character as ordinary. */
5189 /* Ordinary character: put it into the current argument. */
5190 obstack_1grow (&obstack, c);
5194 /* End of string. */
5198 /* Return 0 if we call do_spec_1 and that returns -1. */
5204 const char *filter, *body = NULL, *endbody = NULL;
5206 int true_once = 0; /* If, in %{a|b:d}, at least one of a,b was seen. */
5209 int include_blanks = 1;
5210 int elide_switch = 0;
5215 /* A '^' after the open-brace means to not give blanks before args. */
5222 /* A `|' after the open-brace means,
5223 if the test fails, output a single minus sign rather than nothing.
5224 This is used in %{|!pipe:...}. */
5231 /* A `<' after the open-brace means that the switch should be
5232 removed from the command-line. */
5238 negate = suffix = 0;
5241 /* A `!' after the open-brace negates the condition:
5242 succeed if the specified switch is not present. */
5246 /* A `.' after the open-brace means test against the current suffix. */
5255 if (elide_switch && (negate || pipe_p || suffix))
5257 /* It doesn't make sense to mix elision with other flags. We
5258 could fatal() here, but the standard seems to be to abort. */
5264 while (*p != ':' && *p != '}' && *p != '|' && *p != '&')
5267 if (*p == '|' && (pipe_p || ordered))
5272 if (*p != '}' && *p != '&')
5288 fatal ("mismatched braces in specs");
5294 body = p, endbody = p + 1;
5299 int found = (input_suffix != 0
5300 && (long) strlen (input_suffix) == (long) (p - filter)
5301 && strncmp (input_suffix, filter, p - filter) == 0);
5307 && do_spec_1 (save_string (body, endbody-body-1), 0, NULL) < 0)
5310 else if (p[-1] == '*' && (p[0] == '}' || p[0] == '&'))
5312 /* Substitute all matching switches as separate args. */
5315 for (i = 0; i < n_switches; i++)
5316 if (!strncmp (switches[i].part1, filter, p - 1 - filter)
5317 && check_live_switch (i, p - 1 - filter))
5321 switches[i].live_cond = SWITCH_IGNORE;
5322 switches[i].validated = 1;
5325 ordered = 1, switches[i].ordering = 1;
5330 /* Test for presence of the specified switch. */
5334 /* If name specified ends in *, as in {x*:...},
5335 check for %* and handle that case. */
5336 if (p[-1] == '*' && !negate)
5339 const char *r = body;
5341 /* First see whether we have %*. */
5345 if (*r == '%' && r[1] == '*')
5349 /* If we do, handle that case. */
5352 /* Substitute all matching switches as separate args.
5353 But do this by substituting for %*
5354 in the text that follows the colon. */
5356 unsigned hard_match_len = p - filter - 1;
5357 char *string = save_string (body, endbody - body - 1);
5359 for (i = 0; i < n_switches; i++)
5360 if (!strncmp (switches[i].part1, filter, hard_match_len)
5361 && check_live_switch (i, -1))
5363 do_spec_1 (string, 0, &switches[i].part1[hard_match_len]);
5364 /* Pass any arguments this switch has. */
5365 give_switch (i, 1, 1);
5366 suffix_subst = NULL;
5369 /* We didn't match. Try again. */
5376 /* If name specified ends in *, as in {x*:...},
5377 check for presence of any switch name starting with x. */
5380 for (i = 0; i < n_switches; i++)
5382 unsigned hard_match_len = p - filter - 1;
5384 if (!strncmp (switches[i].part1, filter, hard_match_len)
5385 && check_live_switch (i, hard_match_len))
5392 /* Otherwise, check for presence of exact name specified. */
5395 for (i = 0; i < n_switches; i++)
5397 if (!strncmp (switches[i].part1, filter, p - filter)
5398 && switches[i].part1[p - filter] == 0
5399 && check_live_switch (i, -1))
5407 /* If it is as desired (present for %{s...}, absent for %{!s...})
5408 then substitute either the switch or the specified
5409 conditional text. */
5410 if (present != negate)
5414 switches[i].live_cond = SWITCH_IGNORE;
5415 switches[i].validated = 1;
5417 else if (ordered || *p == '&')
5418 ordered = 1, switches[i].ordering = 1;
5420 give_switch (i, 0, include_blanks);
5422 /* Even if many alternatives are matched, only output once. */
5427 /* Here if a %{|...} conditional fails: output a minus sign,
5428 which means "standard output" or "standard input". */
5429 do_spec_1 ("-", 0, NULL);
5434 /* We didn't match; try again. */
5441 goto next_ampersand;
5447 /* Doing this set of switches later preserves their command-line
5448 ordering. This is needed for e.g. -U, -D and -A. */
5449 for (i = 0; i < n_switches; i++)
5450 if (switches[i].ordering == 1)
5452 switches[i].ordering = 0;
5453 give_switch (i, 0, include_blanks);
5456 /* Process the spec just once, regardless of match count. */
5459 if (do_spec_1 (save_string (body, endbody - body - 1),
5467 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5468 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5469 spec, or -1 if either exact match or %* is used.
5471 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5472 whose value does not begin with "no-" is obsoleted by the same value
5473 with the "no-", similarly for a switch with the "no-" prefix. */
5476 check_live_switch (switchnum, prefix_length)
5480 const char *name = switches[switchnum].part1;
5483 /* In the common case of {<at-most-one-letter>*}, a negating
5484 switch would always match, so ignore that case. We will just
5485 send the conflicting switches to the compiler phase. */
5486 if (prefix_length >= 0 && prefix_length <= 1)
5489 /* If we already processed this switch and determined if it was
5490 live or not, return our past determination. */
5491 if (switches[switchnum].live_cond != 0)
5492 return switches[switchnum].live_cond > 0;
5494 /* Now search for duplicate in a manner that depends on the name. */
5498 for (i = switchnum + 1; i < n_switches; i++)
5499 if (switches[i].part1[0] == 'O')
5501 switches[switchnum].validated = 1;
5502 switches[switchnum].live_cond = SWITCH_FALSE;
5507 case 'W': case 'f': case 'm':
5508 if (! strncmp (name + 1, "no-", 3))
5510 /* We have Xno-YYY, search for XYYY. */
5511 for (i = switchnum + 1; i < n_switches; i++)
5512 if (switches[i].part1[0] == name[0]
5513 && ! strcmp (&switches[i].part1[1], &name[4]))
5515 switches[switchnum].validated = 1;
5516 switches[switchnum].live_cond = SWITCH_FALSE;
5522 /* We have XYYY, search for Xno-YYY. */
5523 for (i = switchnum + 1; i < n_switches; i++)
5524 if (switches[i].part1[0] == name[0]
5525 && switches[i].part1[1] == 'n'
5526 && switches[i].part1[2] == 'o'
5527 && switches[i].part1[3] == '-'
5528 && !strcmp (&switches[i].part1[4], &name[1]))
5530 switches[switchnum].validated = 1;
5531 switches[switchnum].live_cond = SWITCH_FALSE;
5538 /* Otherwise the switch is live. */
5539 switches[switchnum].live_cond = SWITCH_LIVE;
5543 /* Pass a switch to the current accumulating command
5544 in the same form that we received it.
5545 SWITCHNUM identifies the switch; it is an index into
5546 the vector of switches gcc received, which is `switches'.
5547 This cannot fail since it never finishes a command line.
5549 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument.
5551 If INCLUDE_BLANKS is nonzero, then we include blanks before each argument
5555 give_switch (switchnum, omit_first_word, include_blanks)
5557 int omit_first_word;
5560 if (switches[switchnum].live_cond == SWITCH_IGNORE)
5563 if (!omit_first_word)
5565 do_spec_1 ("-", 0, NULL);
5566 do_spec_1 (switches[switchnum].part1, 1, NULL);
5569 if (switches[switchnum].args != 0)
5572 for (p = switches[switchnum].args; *p; p++)
5574 const char *arg = *p;
5577 do_spec_1 (" ", 0, NULL);
5580 unsigned length = strlen (arg);
5583 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5584 if (arg[length] == '.')
5586 ((char *)arg)[length] = 0;
5590 do_spec_1 (arg, 1, NULL);
5592 ((char *)arg)[length] = '.';
5593 do_spec_1 (suffix_subst, 1, NULL);
5596 do_spec_1 (arg, 1, NULL);
5600 do_spec_1 (" ", 0, NULL);
5601 switches[switchnum].validated = 1;
5604 /* Search for a file named NAME trying various prefixes including the
5605 user's -B prefix and some standard ones.
5606 Return the absolute file name found. If nothing is found, return NAME. */
5614 /* Try multilib_dir if it is defined. */
5615 if (multilib_dir != NULL)
5617 const char *const try = ACONCAT ((multilib_dir, dir_separator_str, name, NULL));
5619 newname = find_a_file (&startfile_prefixes, try, R_OK);
5621 /* If we don't find it in the multi library dir, then fall
5622 through and look for it in the normal places. */
5623 if (newname != NULL)
5627 newname = find_a_file (&startfile_prefixes, name, R_OK);
5628 return newname ? newname : name;
5631 /* Determine whether a directory exists. If LINKER, return 0 for
5632 certain fixed names not needed by the linker. If not LINKER, it is
5633 only important to return 0 if the host machine has a small ARG_MAX
5637 is_directory (path1, path2, linker)
5642 int len1 = strlen (path1);
5643 int len2 = strlen (path2);
5644 char *path = (char *) alloca (3 + len1 + len2);
5648 #ifndef SMALL_ARG_MAX
5653 /* Construct the path from the two parts. Ensure the string ends with "/.".
5654 The resulting path will be a directory even if the given path is a
5656 memcpy (path, path1, len1);
5657 memcpy (path + len1, path2, len2);
5658 cp = path + len1 + len2;
5659 if (!IS_DIR_SEPARATOR (cp[-1]))
5660 *cp++ = DIR_SEPARATOR;
5664 /* Exclude directories that the linker is known to search. */
5667 && strcmp (path, concat (dir_separator_str, "lib",
5668 dir_separator_str, ".", NULL)) == 0)
5670 && strcmp (path, concat (dir_separator_str, "usr",
5671 dir_separator_str, "lib",
5672 dir_separator_str, ".", NULL)) == 0)))
5675 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5678 /* Set up the various global variables to indicate that we're processing
5679 the input file named FILENAME. */
5682 set_input (filename)
5683 const char *filename;
5687 input_filename = filename;
5688 input_filename_length = strlen (input_filename);
5690 input_basename = input_filename;
5691 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
5692 /* Skip drive name so 'x:foo' is handled properly. */
5693 if (input_basename[1] == ':')
5694 input_basename += 2;
5696 for (p = input_basename; *p; p++)
5697 if (IS_DIR_SEPARATOR (*p))
5698 input_basename = p + 1;
5700 /* Find a suffix starting with the last period,
5701 and set basename_length to exclude that suffix. */
5702 basename_length = strlen (input_basename);
5703 suffixed_basename_length = basename_length;
5704 p = input_basename + basename_length;
5705 while (p != input_basename && *p != '.')
5707 if (*p == '.' && p != input_basename)
5709 basename_length = p - input_basename;
5710 input_suffix = p + 1;
5715 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5716 we will need to do a stat on the input_filename. The
5717 INPUT_STAT_SET signals that the stat is needed. */
5721 /* On fatal signals, delete all the temporary files. */
5724 fatal_error (signum)
5727 signal (signum, SIG_DFL);
5728 delete_failure_queue ();
5729 delete_temp_files ();
5730 /* Get the same signal again, this time not handled,
5731 so its normal effect occurs. */
5732 kill (getpid (), signum);
5735 extern int main PARAMS ((int, const char *const *));
5740 const char *const *argv;
5744 int linker_was_run = 0;
5745 char *explicit_link_files;
5748 struct user_specs *uptr;
5750 p = argv[0] + strlen (argv[0]);
5751 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
5755 xmalloc_set_program_name (programname);
5757 #ifdef GCC_DRIVER_HOST_INITIALIZATION
5758 /* Perform host dependent initialization when needed. */
5759 GCC_DRIVER_HOST_INITIALIZATION;
5762 gcc_init_libintl ();
5764 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
5765 signal (SIGINT, fatal_error);
5767 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
5768 signal (SIGHUP, fatal_error);
5770 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
5771 signal (SIGTERM, fatal_error);
5773 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
5774 signal (SIGPIPE, fatal_error);
5777 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
5778 receive the signal. A different setting is inheritable */
5779 signal (SIGCHLD, SIG_DFL);
5783 argbuf = (const char **) xmalloc (argbuf_length * sizeof (const char *));
5785 obstack_init (&obstack);
5787 /* Build multilib_select, et. al from the separate lines that make up each
5788 multilib selection. */
5790 const char *const *q = multilib_raw;
5793 obstack_init (&multilib_obstack);
5794 while ((p = *q++) != (char *) 0)
5795 obstack_grow (&multilib_obstack, p, strlen (p));
5797 obstack_1grow (&multilib_obstack, 0);
5798 multilib_select = obstack_finish (&multilib_obstack);
5800 q = multilib_matches_raw;
5801 while ((p = *q++) != (char *) 0)
5802 obstack_grow (&multilib_obstack, p, strlen (p));
5804 obstack_1grow (&multilib_obstack, 0);
5805 multilib_matches = obstack_finish (&multilib_obstack);
5807 q = multilib_exclusions_raw;
5808 while ((p = *q++) != (char *) 0)
5809 obstack_grow (&multilib_obstack, p, strlen (p));
5811 obstack_1grow (&multilib_obstack, 0);
5812 multilib_exclusions = obstack_finish (&multilib_obstack);
5815 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
5818 obstack_1grow (&multilib_obstack, ' ');
5819 obstack_grow (&multilib_obstack,
5820 multilib_defaults_raw[i],
5821 strlen (multilib_defaults_raw[i]));
5825 obstack_1grow (&multilib_obstack, 0);
5826 multilib_defaults = obstack_finish (&multilib_obstack);
5829 /* Set up to remember the pathname of gcc and any options
5830 needed for collect. We use argv[0] instead of programname because
5831 we need the complete pathname. */
5832 obstack_init (&collect_obstack);
5833 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
5834 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
5835 putenv (obstack_finish (&collect_obstack));
5837 #ifdef INIT_ENVIRONMENT
5838 /* Set up any other necessary machine specific environment variables. */
5839 putenv (INIT_ENVIRONMENT);
5842 /* Make a table of what switches there are (switches, n_switches).
5843 Make a table of specified input files (infiles, n_infiles).
5844 Decode switches that are handled locally. */
5846 process_command (argc, argv);
5848 /* Initialize the vector of specs to just the default.
5849 This means one element containing 0s, as a terminator. */
5851 compilers = (struct compiler *) xmalloc (sizeof default_compilers);
5852 memcpy ((char *) compilers, (char *) default_compilers,
5853 sizeof default_compilers);
5854 n_compilers = n_default_compilers;
5856 /* Read specs from a file if there is one. */
5858 machine_suffix = concat (spec_machine, dir_separator_str,
5859 spec_version, dir_separator_str, NULL);
5860 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
5862 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK);
5863 /* Read the specs file unless it is a default one. */
5864 if (specs_file != 0 && strcmp (specs_file, "specs"))
5865 read_specs (specs_file, TRUE);
5869 /* We need to check standard_exec_prefix/just_machine_suffix/specs
5870 for any override of as, ld and libraries. */
5871 specs_file = (char *) alloca (strlen (standard_exec_prefix)
5872 + strlen (just_machine_suffix)
5873 + sizeof ("specs"));
5875 strcpy (specs_file, standard_exec_prefix);
5876 strcat (specs_file, just_machine_suffix);
5877 strcat (specs_file, "specs");
5878 if (access (specs_file, R_OK) == 0)
5879 read_specs (specs_file, TRUE);
5881 /* If not cross-compiling, look for startfiles in the standard places. */
5882 if (*cross_compile == '0')
5884 if (*md_exec_prefix)
5886 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
5887 PREFIX_PRIORITY_LAST, 0, NULL);
5888 add_prefix (&startfile_prefixes, md_exec_prefix, "GCC",
5889 PREFIX_PRIORITY_LAST, 0, NULL);
5892 if (*md_startfile_prefix)
5893 add_prefix (&startfile_prefixes, md_startfile_prefix, "GCC",
5894 PREFIX_PRIORITY_LAST, 0, NULL);
5896 if (*md_startfile_prefix_1)
5897 add_prefix (&startfile_prefixes, md_startfile_prefix_1, "GCC",
5898 PREFIX_PRIORITY_LAST, 0, NULL);
5900 /* If standard_startfile_prefix is relative, base it on
5901 standard_exec_prefix. This lets us move the installed tree
5902 as a unit. If GCC_EXEC_PREFIX is defined, base
5903 standard_startfile_prefix on that as well. */
5904 if (IS_ABSOLUTE_PATHNAME (standard_startfile_prefix))
5905 add_prefix (&startfile_prefixes, standard_startfile_prefix, "BINUTILS",
5906 PREFIX_PRIORITY_LAST, 0, NULL);
5909 if (gcc_exec_prefix)
5910 add_prefix (&startfile_prefixes,
5911 concat (gcc_exec_prefix, machine_suffix,
5912 standard_startfile_prefix, NULL),
5913 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
5914 add_prefix (&startfile_prefixes,
5915 concat (standard_exec_prefix,
5917 standard_startfile_prefix, NULL),
5918 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
5921 add_prefix (&startfile_prefixes, standard_startfile_prefix_1,
5922 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
5923 add_prefix (&startfile_prefixes, standard_startfile_prefix_2,
5924 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
5925 #if 0 /* Can cause surprises, and one can use -B./ instead. */
5926 add_prefix (&startfile_prefixes, "./", NULL,
5927 PREFIX_PRIORITY_LAST, 1, NULL);
5932 if (!IS_ABSOLUTE_PATHNAME (standard_startfile_prefix)
5934 add_prefix (&startfile_prefixes,
5935 concat (gcc_exec_prefix, machine_suffix,
5936 standard_startfile_prefix, NULL),
5937 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
5940 /* Process any user specified specs in the order given on the command
5942 for (uptr = user_specs_head; uptr; uptr = uptr->next)
5944 char *filename = find_a_file (&startfile_prefixes, uptr->filename, R_OK);
5945 read_specs (filename ? filename : uptr->filename, FALSE);
5948 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
5949 if (gcc_exec_prefix)
5950 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
5951 spec_version, dir_separator_str, NULL);
5953 /* Now we have the specs.
5954 Set the `valid' bits for switches that match anything in any spec. */
5956 validate_all_switches ();
5958 /* Now that we have the switches and the specs, set
5959 the subdirectory based on the options. */
5960 set_multilib_dir ();
5962 /* Warn about any switches that no pass was interested in. */
5964 for (i = 0; (int) i < n_switches; i++)
5965 if (! switches[i].validated)
5966 error ("unrecognized option `-%s'", switches[i].part1);
5968 /* Obey some of the options. */
5970 if (print_search_dirs)
5972 printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix);
5973 printf (_("programs: %s\n"), build_search_list (&exec_prefixes, "", 0));
5974 printf (_("libraries: %s\n"), build_search_list (&startfile_prefixes, "", 0));
5978 if (print_file_name)
5980 printf ("%s\n", find_file (print_file_name));
5984 if (print_prog_name)
5986 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK);
5987 printf ("%s\n", (newname ? newname : print_prog_name));
5991 if (print_multi_lib)
5993 print_multilib_info ();
5997 if (print_multi_directory)
5999 if (multilib_dir == NULL)
6002 printf ("%s\n", multilib_dir);
6006 if (target_help_flag)
6008 /* Print if any target specific options. */
6010 /* We do not exit here. Instead we have created a fake input file
6011 called 'target-dummy' which needs to be compiled, and we pass this
6012 on to the various sub-processes, along with the --target-help
6016 if (print_help_list)
6022 printf (_("\nFor bug reporting instructions, please see:\n"));
6023 printf ("%s.\n", GCCBUGURL);
6028 /* We do not exit here. Instead we have created a fake input file
6029 called 'help-dummy' which needs to be compiled, and we pass this
6030 on the various sub-processes, along with the --help switch. */
6038 notice ("Configured with: %s\n", configuration_arguments);
6040 #ifdef THREAD_MODEL_SPEC
6041 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6042 but there's no point in doing all this processing just to get
6043 thread_model back. */
6044 obstack_init (&obstack);
6045 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6046 obstack_1grow (&obstack, '\0');
6047 thrmod = obstack_finish (&obstack);
6049 thrmod = thread_model;
6052 notice ("Thread model: %s\n", thrmod);
6054 /* compiler_version is truncated at the first space when initialized
6055 from version string, so truncate version_string at the first space
6056 before comparing. */
6057 for (n = 0; version_string[n]; n++)
6058 if (version_string[n] == ' ')
6061 if (! strncmp (version_string, compiler_version, n)
6062 && compiler_version[n] == 0)
6063 notice ("gcc version %s\n", version_string);
6065 notice ("gcc driver version %s executing gcc version %s\n",
6066 version_string, compiler_version);
6072 if (n_infiles == added_libraries)
6073 fatal ("no input files");
6075 /* Make a place to record the compiler output file names
6076 that correspond to the input files. */
6079 i += lang_specific_extra_outfiles;
6080 outfiles = (const char **) xcalloc (i, sizeof (char *));
6082 /* Record which files were specified explicitly as link input. */
6084 explicit_link_files = xcalloc (1, n_infiles);
6086 for (i = 0; (int) i < n_infiles; i++)
6088 int this_file_error = 0;
6090 /* Tell do_spec what to substitute for %i. */
6092 input_file_number = i;
6093 set_input (infiles[i].name);
6095 /* Use the same thing in %o, unless cp->spec says otherwise. */
6097 outfiles[i] = input_filename;
6099 /* Figure out which compiler from the file's suffix. */
6102 = lookup_compiler (infiles[i].name, input_filename_length,
6103 infiles[i].language);
6105 if (input_file_compiler)
6107 /* Ok, we found an applicable compiler. Run its spec. */
6109 if (input_file_compiler->spec[0] == '#')
6111 error ("%s: %s compiler not installed on this system",
6112 input_filename, &input_file_compiler->spec[1]);
6113 this_file_error = 1;
6117 value = do_spec (input_file_compiler->spec);
6119 this_file_error = 1;
6123 /* If this file's name does not contain a recognized suffix,
6124 record it as explicit linker input. */
6127 explicit_link_files[i] = 1;
6129 /* Clear the delete-on-failure queue, deleting the files in it
6130 if this compilation failed. */
6132 if (this_file_error)
6134 delete_failure_queue ();
6137 /* If this compilation succeeded, don't delete those files later. */
6138 clear_failure_queue ();
6141 /* Reset the output file name to the first input file name, for use
6142 with %b in LINK_SPEC on a target that prefers not to emit a.out
6145 set_input (infiles[0].name);
6147 if (error_count == 0)
6149 /* Make sure INPUT_FILE_NUMBER points to first available open
6151 input_file_number = n_infiles;
6152 if (lang_specific_pre_link ())
6156 /* Run ld to link all the compiler output files. */
6158 if (error_count == 0)
6160 int tmp = execution_count;
6162 /* We'll use ld if we can't find collect2. */
6163 if (! strcmp (linker_name_spec, "collect2"))
6165 char *s = find_a_file (&exec_prefixes, "collect2", X_OK);
6167 linker_name_spec = "ld";
6169 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6171 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH");
6172 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV);
6174 value = do_spec (link_command_spec);
6177 linker_was_run = (tmp != execution_count);
6180 /* If options said don't run linker,
6181 complain about input files to be given to the linker. */
6183 if (! linker_was_run && error_count == 0)
6184 for (i = 0; (int) i < n_infiles; i++)
6185 if (explicit_link_files[i])
6186 error ("%s: linker input file unused because linking not done",
6189 /* Delete some or all of the temporary files we made. */
6192 delete_failure_queue ();
6193 delete_temp_files ();
6195 if (print_help_list)
6197 printf (("\nFor bug reporting instructions, please see:\n"));
6198 printf ("%s\n", GCCBUGURL);
6201 return (signal_count != 0 ? 2
6202 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
6206 /* Find the proper compilation spec for the file name NAME,
6207 whose length is LENGTH. LANGUAGE is the specified language,
6208 or 0 if this file is to be passed to the linker. */
6210 static struct compiler *
6211 lookup_compiler (name, length, language)
6214 const char *language;
6216 struct compiler *cp;
6218 /* If this was specified by the user to be a linker input, indicate that. */
6219 if (language != 0 && language[0] == '*')
6222 /* Otherwise, look for the language, if one is spec'd. */
6225 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6226 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6229 error ("language %s not recognized", language);
6233 /* Look for a suffix. */
6234 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6236 if (/* The suffix `-' matches only the file name `-'. */
6237 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6238 || (strlen (cp->suffix) < length
6239 /* See if the suffix matches the end of NAME. */
6240 && !strcmp (cp->suffix,
6241 name + length - strlen (cp->suffix))
6246 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6247 /* look again, but case-insensitively this time. */
6249 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6251 if (/* The suffix `-' matches only the file name `-'. */
6252 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6253 || (strlen (cp->suffix) < length
6254 /* See if the suffix matches the end of NAME. */
6255 && ((!strcmp (cp->suffix,
6256 name + length - strlen (cp->suffix))
6257 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6258 && !strcasecmp (cp->suffix,
6259 name + length - strlen (cp->suffix)))
6265 if (cp >= compilers)
6267 if (cp->spec[0] != '@')
6268 /* A non-alias entry: return it. */
6271 /* An alias entry maps a suffix to a language.
6272 Search for the language; pass 0 for NAME and LENGTH
6273 to avoid infinite recursion if language not found. */
6274 return lookup_compiler (NULL, 0, cp->spec + 1);
6280 save_string (s, len)
6284 char *result = xmalloc (len + 1);
6286 memcpy (result, s, len);
6292 pfatal_with_name (name)
6295 perror_with_name (name);
6296 delete_temp_files ();
6301 perror_with_name (name)
6304 error ("%s: %s", name, xstrerror (errno));
6308 pfatal_pexecute (errmsg_fmt, errmsg_arg)
6309 const char *errmsg_fmt;
6310 const char *errmsg_arg;
6314 int save_errno = errno;
6316 /* Space for trailing '\0' is in %s. */
6317 char *msg = xmalloc (strlen (errmsg_fmt) + strlen (errmsg_arg));
6318 sprintf (msg, errmsg_fmt, errmsg_arg);
6324 pfatal_with_name (errmsg_fmt);
6327 /* Output an error message and exit */
6332 fatal ("internal gcc abort");
6335 /* Output an error message and exit */
6338 fatal VPARAMS ((const char *msgid, ...))
6340 VA_OPEN (ap, msgid);
6341 VA_FIXEDARG (ap, const char *, msgid);
6343 fprintf (stderr, "%s: ", programname);
6344 vfprintf (stderr, _(msgid), ap);
6346 fprintf (stderr, "\n");
6347 delete_temp_files ();
6352 error VPARAMS ((const char *msgid, ...))
6354 VA_OPEN (ap, msgid);
6355 VA_FIXEDARG (ap, const char *, msgid);
6357 fprintf (stderr, "%s: ", programname);
6358 vfprintf (stderr, _(msgid), ap);
6361 fprintf (stderr, "\n");
6365 notice VPARAMS ((const char *msgid, ...))
6367 VA_OPEN (ap, msgid);
6368 VA_FIXEDARG (ap, const char *, msgid);
6370 vfprintf (stderr, _(msgid), ap);
6375 validate_all_switches ()
6377 struct compiler *comp;
6380 struct spec_list *spec;
6382 for (comp = compilers; comp->spec; comp++)
6386 if (c == '%' && (*p == '{' || (*p == 'W' && *++p == '{')))
6387 /* We have a switch spec. */
6388 validate_switches (p + 1);
6391 /* Look through the linked list of specs read from the specs file. */
6392 for (spec = specs; spec; spec = spec->next)
6394 p = *(spec->ptr_spec);
6396 if (c == '%' && (*p == '{' || (*p == 'W' && *++p == '{')))
6397 /* We have a switch spec. */
6398 validate_switches (p + 1);
6401 p = link_command_spec;
6403 if (c == '%' && (*p == '{' || (*p == 'W' && *++p == '{')))
6404 /* We have a switch spec. */
6405 validate_switches (p + 1);
6408 /* Look at the switch-name that comes after START
6409 and mark as valid all supplied switches that match it. */
6412 validate_switches (start)
6415 const char *p = start;
6432 while (*p != ':' && *p != '}' && *p != '|' && *p != '&')
6437 else if (p[-1] == '*')
6439 /* Mark all matching switches as valid. */
6440 for (i = 0; i < n_switches; i++)
6441 if (!strncmp (switches[i].part1, filter, p - filter - 1))
6442 switches[i].validated = 1;
6446 /* Mark an exact matching switch as valid. */
6447 for (i = 0; i < n_switches; i++)
6449 if (!strncmp (switches[i].part1, filter, p - filter)
6450 && switches[i].part1[p - filter] == 0)
6451 switches[i].validated = 1;
6455 if (*p++ == '|' || p[-1] == '&')
6459 /* Check whether a particular argument was used. The first time we
6460 canonicalize the switches to keep only the ones we care about. */
6470 const char *replace;
6475 static struct mswitchstr *mswitches;
6476 static int n_mswitches;
6481 struct mswitchstr *matches;
6485 /* Break multilib_matches into the component strings of string
6486 and replacement string. */
6487 for (q = multilib_matches; *q != '\0'; q++)
6492 (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
6494 q = multilib_matches;
6504 matches[i].len = q - matches[i].str;
6506 matches[i].replace = ++q;
6507 while (*q != ';' && *q != '\0')
6513 matches[i].rep_len = q - matches[i].replace;
6519 /* Now build a list of the replacement string for switches that we care
6520 about. Make sure we allocate at least one entry. This prevents
6521 xmalloc from calling fatal, and prevents us from re-executing this
6524 = (struct mswitchstr *) xmalloc ((sizeof (struct mswitchstr))
6525 * (n_switches ? n_switches : 1));
6526 for (i = 0; i < n_switches; i++)
6528 int xlen = strlen (switches[i].part1);
6529 for (j = 0; j < cnt; j++)
6530 if (xlen == matches[j].len
6531 && ! strncmp (switches[i].part1, matches[j].str, xlen))
6533 mswitches[n_mswitches].str = matches[j].replace;
6534 mswitches[n_mswitches].len = matches[j].rep_len;
6535 mswitches[n_mswitches].replace = (char *) 0;
6536 mswitches[n_mswitches].rep_len = 0;
6543 for (i = 0; i < n_mswitches; i++)
6544 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
6551 default_arg (p, len)
6555 const char *start, *end;
6557 for (start = multilib_defaults; *start != '\0'; start = end + 1)
6559 while (*start == ' ' || *start == '\t')
6565 for (end = start + 1; *end != ' ' && *end != '\t' && *end != '\0'; end++)
6568 if ((end - start) == len && strncmp (p, start, len) == 0)
6578 /* Work out the subdirectory to use based on the options. The format of
6579 multilib_select is a list of elements. Each element is a subdirectory
6580 name followed by a list of options followed by a semicolon. The format
6581 of multilib_exclusions is the same, but without the preceding
6582 directory. First gcc will check the exclusions, if none of the options
6583 beginning with an exclamation point are present, and all of the other
6584 options are present, then we will ignore this completely. Passing
6585 that, gcc will consider each multilib_select in turn using the same
6586 rules for matching the options. If a match is found, that subdirectory
6593 unsigned int this_path_len;
6594 const char *this_path, *this_arg;
6598 p = multilib_exclusions;
6601 /* Ignore newlines. */
6608 /* Check the arguments. */
6622 while (*p != ' ' && *p != ';')
6629 if (*this_arg != '!')
6637 ok = used_arg (this_arg, p - this_arg);
6651 p = multilib_select;
6654 /* Ignore newlines. */
6661 /* Get the initial path. */
6669 this_path_len = p - this_path;
6671 /* Check the arguments. */
6686 while (*p != ' ' && *p != ';')
6693 if (*this_arg != '!')
6701 /* If this is a default argument, we can just ignore it.
6702 This is true even if this_arg begins with '!'. Beginning
6703 with '!' does not mean that this argument is necessarily
6704 inappropriate for this library: it merely means that
6705 there is a more specific library which uses this
6706 argument. If this argument is a default, we need not
6707 consider that more specific library. */
6708 if (! default_arg (this_arg, p - this_arg))
6710 ok = used_arg (this_arg, p - this_arg);
6721 if (this_path_len != 1
6722 || this_path[0] != '.')
6724 char *new_multilib_dir = xmalloc (this_path_len + 1);
6725 strncpy (new_multilib_dir, this_path, this_path_len);
6726 new_multilib_dir[this_path_len] = '\0';
6727 multilib_dir = new_multilib_dir;
6736 /* Print out the multiple library subdirectory selection
6737 information. This prints out a series of lines. Each line looks
6738 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
6739 required. Only the desired options are printed out, the negative
6740 matches. The options are print without a leading dash. There are
6741 no spaces to make it easy to use the information in the shell.
6742 Each subdirectory is printed only once. This assumes the ordering
6743 generated by the genmultilib script. Also, we leave out ones that match
6747 print_multilib_info ()
6749 const char *p = multilib_select;
6750 const char *last_path = 0, *this_path;
6752 unsigned int last_path_len = 0;
6757 /* Ignore newlines. */
6764 /* Get the initial path. */
6773 /* Check for matches with the multilib_exclusions. We don't bother
6774 with the '!' in either list. If any of the exclusion rules match
6775 all of its options with the select rule, we skip it. */
6777 const char *e = multilib_exclusions;
6778 const char *this_arg;
6783 /* Ignore newlines. */
6790 /* Check the arguments. */
6807 while (*e != ' ' && *e != ';')
6818 int len = e - this_arg;
6825 while (*q != ' ' && *q != ';')
6832 if (! strncmp (arg, this_arg, (len < q - arg) ? q - arg : len) ||
6833 default_arg (this_arg, e - this_arg))
6863 /* If this is a duplicate, skip it. */
6864 skip = (last_path != 0 && (unsigned int) (p - this_path) == last_path_len
6865 && ! strncmp (last_path, this_path, last_path_len));
6867 last_path = this_path;
6868 last_path_len = p - this_path;
6871 /* If this directory requires any default arguments, we can skip
6872 it. We will already have printed a directory identical to
6873 this one which does not require that default argument. */
6891 while (*q != ' ' && *q != ';')
6899 && default_arg (arg, q - arg))
6914 for (p1 = last_path; p1 < p; p1++)
6933 use_arg = *p != '!';
6938 while (*p != ' ' && *p != ';')
6953 /* If there are extra options, print them now. */
6954 if (multilib_extra && *multilib_extra)
6956 int print_at = TRUE;
6959 for (q = multilib_extra; *q != '\0'; q++)