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 %3 process LINK_GCC_C_SEQUENCE_SPEC as a spec.
452 %| output "-" if the input for the current command is coming from a pipe.
453 %* substitute the variable part of a matched option. (See below.)
454 Note that each comma in the substituted string is replaced by
456 %{S} substitutes the -S switch, if that switch was given to CC.
457 If that switch was not specified, this substitutes nothing.
458 Here S is a metasyntactic variable.
459 %{S*} substitutes all the switches specified to CC whose names start
460 with -S. This is used for -o, -I, etc; switches that take
461 arguments. CC considers `-o foo' as being one switch whose
462 name starts with `o'. %{o*} would substitute this text,
463 including the space; thus, two arguments would be generated.
464 %{^S*} likewise, but don't put a blank between a switch and any args.
465 %{S*&T*} likewise, but preserve order of S and T options (the order
466 of S and T in the spec is not significant). Can be any number
467 of ampersand-separated variables; for each the wild card is
468 optional. Useful for CPP as %{D*&U*&A*}.
469 %{S*:X} substitutes X if one or more switches whose names start with -S are
470 specified to CC. Note that the tail part of the -S option
471 (i.e. the part matched by the `*') will be substituted for each
472 occurrence of %* within X.
473 %{<S} remove all occurrences of -S from the command line.
474 Note - this option is position dependent. % commands in the
475 spec string before this option will see -S, % commands in the
476 spec string after this option will not.
477 %{S:X} substitutes X, but only if the -S switch was given to CC.
478 %{!S:X} substitutes X, but only if the -S switch was NOT given to CC.
479 %{|S:X} like %{S:X}, but if no S switch, substitute `-'.
480 %{|!S:X} like %{!S:X}, but if there is an S switch, substitute `-'.
481 %{.S:X} substitutes X, but only if processing a file with suffix S.
482 %{!.S:X} substitutes X, but only if NOT processing a file with suffix S.
483 %{S|P:X} substitutes X if either -S or -P was given to CC. This may be
484 combined with ! and . as above binding stronger than the OR.
485 %(Spec) processes a specification defined in a specs file as *Spec:
486 %[Spec] as above, but put __ around -D arguments
488 The conditional text X in a %{S:X} or %{!S:X} construct may contain
489 other nested % constructs or spaces, or even newlines. They are
490 processed as usual, as described above.
492 The -O, -f, -m, and -W switches are handled specifically in these
493 constructs. If another value of -O or the negated form of a -f, -m, or
494 -W switch is found later in the command line, the earlier switch
495 value is ignored, except with {S*} where S is just one letter; this
496 passes all matching options.
498 The character | at the beginning of the predicate text is used to indicate
499 that a command should be piped to the following command, but only if -pipe
502 Note that it is built into CC which switches take arguments and which
503 do not. You might think it would be useful to generalize this to
504 allow each compiler's spec to say which switches take arguments. But
505 this cannot be done in a consistent fashion. CC cannot even decide
506 which input files have been specified without knowing which switches
507 take arguments, and it must know which input files to compile in order
508 to tell which compilers to run.
510 CC also knows implicitly that arguments starting in `-l' are to be
511 treated as compiler output files, and passed to the linker in their
512 proper position among the other output files. */
514 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
516 /* config.h can define ASM_SPEC to provide extra args to the assembler
517 or extra switch-translations. */
522 /* config.h can define ASM_FINAL_SPEC to run a post processor after
523 the assembler has run. */
524 #ifndef ASM_FINAL_SPEC
525 #define ASM_FINAL_SPEC ""
528 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
529 or extra switch-translations. */
534 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
535 or extra switch-translations. */
540 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
541 or extra switch-translations. */
543 #define CC1PLUS_SPEC ""
546 /* config.h can define LINK_SPEC to provide extra args to the linker
547 or extra switch-translations. */
552 /* config.h can define LIB_SPEC to override the default libraries. */
554 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
557 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
560 #if defined(LINK_LIBGCC_SPECIAL) || defined(LINK_LIBGCC_SPECIAL_1)
561 /* Have gcc do the search for libgcc.a. */
562 #define LIBGCC_SPEC "libgcc.a%s"
564 #define LIBGCC_SPEC "-lgcc"
568 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
569 #ifndef STARTFILE_SPEC
570 #define STARTFILE_SPEC \
571 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
574 /* config.h can define SWITCHES_NEED_SPACES to control which options
575 require spaces between the option and the argument. */
576 #ifndef SWITCHES_NEED_SPACES
577 #define SWITCHES_NEED_SPACES ""
580 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
582 #define ENDFILE_SPEC ""
586 #define LINKER_NAME "collect2"
589 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
591 #ifndef ASM_DEBUG_SPEC
592 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
593 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
594 # define ASM_DEBUG_SPEC \
595 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
596 ? "%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}" \
597 : "%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}")
599 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
600 # define ASM_DEBUG_SPEC "%{g*:--gstabs}"
602 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
603 # define ASM_DEBUG_SPEC "%{g*:--gdwarf2}"
607 #ifndef ASM_DEBUG_SPEC
608 # define ASM_DEBUG_SPEC ""
611 /* Here is the spec for running the linker, after compiling all files. */
613 /* This is overridable by the target in case they need to specify the
614 -lgcc and -lc order specially, yet not require them to override all
615 of LINK_COMMAND_SPEC. */
616 #ifndef LINK_GCC_C_SEQUENCE_SPEC
617 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
620 /* -u* was put back because both BSD and SysV seem to support it. */
621 /* %{static:} simply prevents an error message if the target machine
622 doesn't handle -static. */
623 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
624 scripts which exist in user specified directories, or in standard
626 #ifndef LINK_COMMAND_SPEC
627 #define LINK_COMMAND_SPEC "\
628 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
629 %(linker) %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r} %{s} %{t}\
630 %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
631 %{static:} %{L*} %(link_libgcc) %o %{!nostdlib:%{!nodefaultlibs:%3}}\
632 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
635 #ifndef LINK_LIBGCC_SPEC
636 # ifdef LINK_LIBGCC_SPECIAL
637 /* Don't generate -L options for startfile prefix list. */
638 # define LINK_LIBGCC_SPEC ""
640 /* Do generate them. */
641 # define LINK_LIBGCC_SPEC "%D"
645 static const char *asm_debug = ASM_DEBUG_SPEC;
646 static const char *cpp_spec = CPP_SPEC;
647 static const char *cpp_predefines = CPP_PREDEFINES;
648 static const char *cc1_spec = CC1_SPEC;
649 static const char *cc1plus_spec = CC1PLUS_SPEC;
650 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
651 static const char *asm_spec = ASM_SPEC;
652 static const char *asm_final_spec = ASM_FINAL_SPEC;
653 static const char *link_spec = LINK_SPEC;
654 static const char *lib_spec = LIB_SPEC;
655 static const char *libgcc_spec = LIBGCC_SPEC;
656 static const char *endfile_spec = ENDFILE_SPEC;
657 static const char *startfile_spec = STARTFILE_SPEC;
658 static const char *switches_need_spaces = SWITCHES_NEED_SPACES;
659 static const char *linker_name_spec = LINKER_NAME;
660 static const char *link_command_spec = LINK_COMMAND_SPEC;
661 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
663 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
664 There should be no need to override these in target dependent files,
665 but we need to copy them to the specs file so that newer versions
666 of the GCC driver can correctly drive older tool chains with the
667 appropriate -B options. */
669 static const char *trad_capable_cpp =
670 "%{traditional|ftraditional|traditional-cpp:tradcpp0}\
671 %{!traditional:%{!ftraditional:%{!traditional-cpp:cc1 -E}}}";
673 static const char *cpp_unique_options =
674 "%{C:%{!E:%eGNU C does not support -C without using -E}}\
675 %{!Q:-quiet} %{nostdinc*} %{C} %{v} %{I*} %{P} %{$} %I\
676 %{MD:-MD %W{!o: %b.d}%W{o*:%.d%*}}\
677 %{MMD:-MMD %W{!o: %b.d}%W{o*:%.d%*}}\
678 %{M} %{MM} %W{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
679 %{!E:%{!M:%{!MM:%{MD|MMD:%{o*:-MQ %*}}}}}\
680 %{!no-gcc:-D__GNUC__=%v1 -D__GNUC_MINOR__=%v2 -D__GNUC_PATCHLEVEL__=%v3}\
681 %{!undef:%{!ansi:%{!std=*:%p}%{std=gnu*:%p}} %P} %{trigraphs}\
682 %{Os:-D__OPTIMIZE_SIZE__} %{O*:%{!O0:-D__OPTIMIZE__}}\
683 %{fno-inline|O0|!O*:-D__NO_INLINE__} %{ffast-math:-D__FAST_MATH__}\
684 %{fshort-wchar:-U__WCHAR_TYPE__ -D__WCHAR_TYPE__=short\\ unsigned\\ int}\
685 %{ffreestanding:-D__STDC_HOSTED__=0} %{fno-hosted:-D__STDC_HOSTED__=0}\
686 %{!ffreestanding:%{!fno-hosted:-D__STDC_HOSTED__=1}} %{remap}\
687 %{g3:-dD} %{H} %C %{D*&U*&A*} %{i*} %Z %i\
690 /* This contains cpp options which are common with cc1_options and are passed
691 only when preprocessing only to avoid duplication. */
692 static const char *cpp_options =
693 "%(cpp_unique_options) %{std*} %{d*} %{W*&pedantic*} %{w}\
694 %{fshow-column} %{fno-show-column}\
695 %{fsigned-char&funsigned-char}\
696 %{fleading-underscore} %{fno-leading-underscore}\
697 %{fno-operator-names} %{ftabstop=*}";
699 /* NB: This is shared amongst all front-ends. */
700 static const char *cc1_options =
701 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
702 %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\
703 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*} %{ansi}\
704 %{v:-version} %{pg:-p} %{p} %{f*}\
705 %{Qn:-fno-ident} %{--help:--help}\
706 %{--target-help:--target-help}\
707 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
708 %{fsyntax-only:-o %j} %{-param*}";
710 static const char *asm_options =
711 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
713 static const char *invoke_as =
714 "%{!S:-o %{|!pipe:%g.s} |\n as %(asm_options) %{!pipe:%g.s} %A }";
716 /* Some compilers have limits on line lengths, and the multilib_select
717 and/or multilib_matches strings can be very long, so we build them at
719 static struct obstack multilib_obstack;
720 static const char *multilib_select;
721 static const char *multilib_matches;
722 static const char *multilib_defaults;
723 static const char *multilib_exclusions;
724 #include "multilib.h"
726 /* Check whether a particular argument is a default argument. */
728 #ifndef MULTILIB_DEFAULTS
729 #define MULTILIB_DEFAULTS { "" }
732 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
736 struct user_specs *next;
737 const char *filename;
740 static struct user_specs *user_specs_head, *user_specs_tail;
742 /* This defines which switch letters take arguments. */
744 #define DEFAULT_SWITCH_TAKES_ARG(CHAR) \
745 ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o' \
746 || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u' \
747 || (CHAR) == 'I' || (CHAR) == 'm' || (CHAR) == 'x' \
748 || (CHAR) == 'L' || (CHAR) == 'A' || (CHAR) == 'V' \
749 || (CHAR) == 'B' || (CHAR) == 'b')
751 #ifndef SWITCH_TAKES_ARG
752 #define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR)
755 /* This defines which multi-letter switches take arguments. */
757 #define DEFAULT_WORD_SWITCH_TAKES_ARG(STR) \
758 (!strcmp (STR, "Tdata") || !strcmp (STR, "Ttext") \
759 || !strcmp (STR, "Tbss") || !strcmp (STR, "include") \
760 || !strcmp (STR, "imacros") || !strcmp (STR, "aux-info") \
761 || !strcmp (STR, "idirafter") || !strcmp (STR, "iprefix") \
762 || !strcmp (STR, "iwithprefix") || !strcmp (STR, "iwithprefixbefore") \
763 || !strcmp (STR, "isystem") || !strcmp (STR, "-param") \
764 || !strcmp (STR, "specs") \
765 || !strcmp (STR, "MF") || !strcmp (STR, "MT") || !strcmp (STR, "MQ"))
767 #ifndef WORD_SWITCH_TAKES_ARG
768 #define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
771 #ifdef HAVE_TARGET_EXECUTABLE_SUFFIX
772 /* This defines which switches stop a full compilation. */
773 #define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \
774 ((CHAR) == 'c' || (CHAR) == 'S')
776 #ifndef SWITCH_CURTAILS_COMPILATION
777 #define SWITCH_CURTAILS_COMPILATION(CHAR) \
778 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR)
782 /* Record the mapping from file suffixes for compilation specs. */
786 const char *suffix; /* Use this compiler for input files
787 whose names end in this suffix. */
789 const char *spec; /* To use this compiler, run this spec. */
791 const char *cpp_spec; /* If non-NULL, substitute this spec
792 for `%C', rather than the usual
796 /* Pointer to a vector of `struct compiler' that gives the spec for
797 compiling a file, based on its suffix.
798 A file that does not end in any of these suffixes will be passed
799 unchanged to the loader and nothing else will be done to it.
801 An entry containing two 0s is used to terminate the vector.
803 If multiple entries match a file, the last matching one is used. */
805 static struct compiler *compilers;
807 /* Number of entries in `compilers', not counting the null terminator. */
809 static int n_compilers;
811 /* The default list of file name suffixes and their compilation specs. */
813 static const struct compiler default_compilers[] =
815 /* Add lists of suffixes of known languages here. If those languages
816 were not present when we built the driver, we will hit these copies
817 and be given a more meaningful error than "file not used since
818 linking is not done". */
819 {".m", "#Objective-C", 0}, {".mi", "#Objective-C", 0},
820 {".cc", "#C++", 0}, {".cxx", "#C++", 0}, {".cpp", "#C++", 0},
821 {".cp", "#C++", 0}, {".c++", "#C++", 0}, {".C", "#C++", 0},
823 {".ads", "#Ada", 0}, {".adb", "#Ada", 0},
824 {".f", "#Fortran", 0}, {".for", "#Fortran", 0}, {".fpp", "#Fortran", 0},
825 {".F", "#Fortran", 0}, {".FOR", "#Fortran", 0}, {".FPP", "#Fortran", 0},
826 {".r", "#Ratfor", 0},
827 {".p", "#Pascal", 0}, {".pas", "#Pascal", 0},
828 {".ch", "#Chill", 0}, {".chi", "#Chill", 0},
829 {".java", "#Java", 0}, {".class", "#Java", 0},
830 {".zip", "#Java", 0}, {".jar", "#Java", 0},
831 /* Next come the entries for C. */
834 /* cc1 has an integrated ISO C preprocessor. We should invoke the
835 external preprocessor if -save-temps is given. */
836 "%{E|M|MM:%(trad_capable_cpp) -lang-c %{ansi:-std=c89} %(cpp_options)}\
838 %{traditional|ftraditional:\
839 %eGNU C no longer supports -traditional without -E}\
840 %{save-temps|traditional-cpp:%(trad_capable_cpp) \
841 -lang-c %{ansi:-std=c89} %(cpp_options) %b.i \n\
842 cc1 -fpreprocessed %b.i %(cc1_options)}\
843 %{!save-temps:%{!traditional-cpp:\
844 cc1 -lang-c %{ansi:-std=c89} %(cpp_unique_options) %(cc1_options)}}\
845 %{!fsyntax-only:%(invoke_as)}}}}", 0},
847 "%{!E:%e-E required when input is from standard input}\
848 %(trad_capable_cpp) -lang-c %{ansi:-std=c89} %(cpp_options)", 0},
849 {".h", "@c-header", 0},
851 "%{!E:%ecompilation of header file requested} \
852 %(trad_capable_cpp) -lang-c %{ansi:-std=c89} %(cpp_options)", 0},
853 {".i", "@cpp-output", 0},
855 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0},
856 {".s", "@assembler", 0},
858 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0},
859 {".S", "@assembler-with-cpp", 0},
860 {"@assembler-with-cpp",
861 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
862 %{!M:%{!MM:%{!E:%{!S:-o %{|!pipe:%g.s} |\n\
863 as %(asm_debug) %(asm_options) %{!pipe:%g.s} %A }}}}", 0},
865 /* Mark end of table */
869 /* Number of elements in default_compilers, not counting the terminator. */
871 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
873 /* A vector of options to give to the linker.
874 These options are accumulated by %x,
875 and substituted into the linker command with %X. */
876 static int n_linker_options;
877 static char **linker_options;
879 /* A vector of options to give to the assembler.
880 These options are accumulated by -Wa,
881 and substituted into the assembler command with %Y. */
882 static int n_assembler_options;
883 static char **assembler_options;
885 /* A vector of options to give to the preprocessor.
886 These options are accumulated by -Wp,
887 and substituted into the preprocessor command with %Z. */
888 static int n_preprocessor_options;
889 static char **preprocessor_options;
891 /* Define how to map long options into short ones. */
893 /* This structure describes one mapping. */
896 /* The long option's name. */
897 const char *const name;
898 /* The equivalent short option. */
899 const char *const equivalent;
900 /* Argument info. A string of flag chars; NULL equals no options.
901 a => argument required.
902 o => argument optional.
903 j => join argument to equivalent, making one word.
904 * => require other text after NAME as an argument. */
905 const char *const arg_info;
908 /* This is the table of mappings. Mappings are tried sequentially
909 for each option encountered; the first one that matches, wins. */
911 static const struct option_map option_map[] =
913 {"--all-warnings", "-Wall", 0},
914 {"--ansi", "-ansi", 0},
915 {"--assemble", "-S", 0},
916 {"--assert", "-A", "a"},
917 {"--classpath", "-fclasspath=", "aj"},
918 {"--bootclasspath", "-fbootclasspath=", "aj"},
919 {"--CLASSPATH", "-fclasspath=", "aj"},
920 {"--comments", "-C", 0},
921 {"--compile", "-c", 0},
922 {"--debug", "-g", "oj"},
923 {"--define-macro", "-D", "aj"},
924 {"--dependencies", "-M", 0},
925 {"--dump", "-d", "a"},
926 {"--dumpbase", "-dumpbase", "a"},
927 {"--entry", "-e", 0},
928 {"--extra-warnings", "-W", 0},
929 {"--for-assembler", "-Wa", "a"},
930 {"--for-linker", "-Xlinker", "a"},
931 {"--force-link", "-u", "a"},
932 {"--imacros", "-imacros", "a"},
933 {"--include", "-include", "a"},
934 {"--include-barrier", "-I-", 0},
935 {"--include-directory", "-I", "aj"},
936 {"--include-directory-after", "-idirafter", "a"},
937 {"--include-prefix", "-iprefix", "a"},
938 {"--include-with-prefix", "-iwithprefix", "a"},
939 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
940 {"--include-with-prefix-after", "-iwithprefix", "a"},
941 {"--language", "-x", "a"},
942 {"--library-directory", "-L", "a"},
943 {"--machine", "-m", "aj"},
944 {"--machine-", "-m", "*j"},
945 {"--no-line-commands", "-P", 0},
946 {"--no-precompiled-includes", "-noprecomp", 0},
947 {"--no-standard-includes", "-nostdinc", 0},
948 {"--no-standard-libraries", "-nostdlib", 0},
949 {"--no-warnings", "-w", 0},
950 {"--optimize", "-O", "oj"},
951 {"--output", "-o", "a"},
952 {"--output-class-directory", "-foutput-class-dir=", "ja"},
953 {"--param", "--param", "a"},
954 {"--pedantic", "-pedantic", 0},
955 {"--pedantic-errors", "-pedantic-errors", 0},
956 {"--pipe", "-pipe", 0},
957 {"--prefix", "-B", "a"},
958 {"--preprocess", "-E", 0},
959 {"--print-search-dirs", "-print-search-dirs", 0},
960 {"--print-file-name", "-print-file-name=", "aj"},
961 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
962 {"--print-missing-file-dependencies", "-MG", 0},
963 {"--print-multi-lib", "-print-multi-lib", 0},
964 {"--print-multi-directory", "-print-multi-directory", 0},
965 {"--print-prog-name", "-print-prog-name=", "aj"},
966 {"--profile", "-p", 0},
967 {"--profile-blocks", "-a", 0},
968 {"--quiet", "-q", 0},
969 {"--save-temps", "-save-temps", 0},
970 {"--shared", "-shared", 0},
971 {"--silent", "-q", 0},
972 {"--specs", "-specs=", "aj"},
973 {"--static", "-static", 0},
974 {"--std", "-std=", "aj"},
975 {"--symbolic", "-symbolic", 0},
976 {"--target", "-b", "a"},
977 {"--time", "-time", 0},
978 {"--trace-includes", "-H", 0},
979 {"--traditional", "-traditional", 0},
980 {"--traditional-cpp", "-traditional-cpp", 0},
981 {"--trigraphs", "-trigraphs", 0},
982 {"--undefine-macro", "-U", "aj"},
983 {"--use-version", "-V", "a"},
984 {"--user-dependencies", "-MM", 0},
985 {"--verbose", "-v", 0},
986 {"--warn-", "-W", "*j"},
987 {"--write-dependencies", "-MD", 0},
988 {"--write-user-dependencies", "-MMD", 0},
993 #ifdef TARGET_OPTION_TRANSLATE_TABLE
994 static const struct {
995 const char *const option_found;
996 const char *const replacements;
997 } target_option_translations[] =
999 TARGET_OPTION_TRANSLATE_TABLE,
1004 /* Translate the options described by *ARGCP and *ARGVP.
1005 Make a new vector and store it back in *ARGVP,
1006 and store its length in *ARGVC. */
1009 translate_options (argcp, argvp)
1011 const char *const **argvp;
1015 const char *const *argv = *argvp;
1016 int newvsize = (argc + 2) * 2 * sizeof (const char *);
1018 (const char **) xmalloc (newvsize);
1022 newv[newindex++] = argv[i++];
1026 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1030 target_option_translations[tott_idx].option_found;
1033 if (strcmp (target_option_translations[tott_idx].option_found,
1040 for (sp = target_option_translations[tott_idx].replacements;
1047 newvsize += spaces * sizeof (const char *);
1048 newv = (const char **) xrealloc (newv, newvsize);
1050 sp = target_option_translations[tott_idx].replacements;
1059 newv[newindex++] = np;
1060 while (*np != ' ' && *np)
1071 if (target_option_translations[tott_idx].option_found)
1075 /* Translate -- options. */
1076 if (argv[i][0] == '-' && argv[i][1] == '-')
1079 /* Find a mapping that applies to this option. */
1080 for (j = 0; j < ARRAY_SIZE (option_map); j++)
1082 size_t optlen = strlen (option_map[j].name);
1083 size_t arglen = strlen (argv[i]);
1084 size_t complen = arglen > optlen ? optlen : arglen;
1085 const char *arginfo = option_map[j].arg_info;
1090 if (!strncmp (argv[i], option_map[j].name, complen))
1092 const char *arg = 0;
1094 if (arglen < optlen)
1097 for (k = j + 1; k < ARRAY_SIZE (option_map); k++)
1098 if (strlen (option_map[k].name) >= arglen
1099 && !strncmp (argv[i], option_map[k].name, arglen))
1101 error ("ambiguous abbreviation %s", argv[i]);
1105 if (k != ARRAY_SIZE (option_map))
1109 if (arglen > optlen)
1111 /* If the option has an argument, accept that. */
1112 if (argv[i][optlen] == '=')
1113 arg = argv[i] + optlen + 1;
1115 /* If this mapping requires extra text at end of name,
1116 accept that as "argument". */
1117 else if (strchr (arginfo, '*') != 0)
1118 arg = argv[i] + optlen;
1120 /* Otherwise, extra text at end means mismatch.
1121 Try other mappings. */
1126 else if (strchr (arginfo, '*') != 0)
1128 error ("incomplete `%s' option", option_map[j].name);
1132 /* Handle arguments. */
1133 if (strchr (arginfo, 'a') != 0)
1139 error ("missing argument to `%s' option",
1140 option_map[j].name);
1147 else if (strchr (arginfo, '*') != 0)
1149 else if (strchr (arginfo, 'o') == 0)
1152 error ("extraneous argument to `%s' option",
1153 option_map[j].name);
1157 /* Store the translation as one argv elt or as two. */
1158 if (arg != 0 && strchr (arginfo, 'j') != 0)
1159 newv[newindex++] = concat (option_map[j].equivalent, arg,
1163 newv[newindex++] = option_map[j].equivalent;
1164 newv[newindex++] = arg;
1167 newv[newindex++] = option_map[j].equivalent;
1175 /* Handle old-fashioned options--just copy them through,
1176 with their arguments. */
1177 else if (argv[i][0] == '-')
1179 const char *p = argv[i] + 1;
1183 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
1184 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
1185 else if (WORD_SWITCH_TAKES_ARG (p))
1186 nskip += WORD_SWITCH_TAKES_ARG (p);
1187 else if ((c == 'B' || c == 'b' || c == 'V' || c == 'x')
1190 else if (! strcmp (p, "Xlinker"))
1193 /* Watch out for an option at the end of the command line that
1194 is missing arguments, and avoid skipping past the end of the
1196 if (nskip + i > argc)
1201 newv[newindex++] = argv[i++];
1206 /* Ordinary operands, or +e options. */
1207 newv[newindex++] = argv[i++];
1222 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1223 be considered whitespace. */
1224 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1226 else if (*p == '\n' || *p == ' ' || *p == '\t')
1240 /* Structures to keep track of prefixes to try when looking for files. */
1244 const char *prefix; /* String to prepend to the path. */
1245 struct prefix_list *next; /* Next in linked list. */
1246 int require_machine_suffix; /* Don't use without machine_suffix. */
1247 /* 2 means try both machine_suffix and just_machine_suffix. */
1248 int *used_flag_ptr; /* 1 if a file was found with this prefix. */
1249 int priority; /* Sort key - priority within list */
1254 struct prefix_list *plist; /* List of prefixes to try */
1255 int max_len; /* Max length of a prefix in PLIST */
1256 const char *name; /* Name of this list (used in config stuff) */
1259 /* List of prefixes to try when looking for executables. */
1261 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1263 /* List of prefixes to try when looking for startup (crt0) files. */
1265 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1267 /* List of prefixes to try when looking for include files. */
1269 static struct path_prefix include_prefixes = { 0, 0, "include" };
1271 /* Suffix to attach to directories searched for commands.
1272 This looks like `MACHINE/VERSION/'. */
1274 static const char *machine_suffix = 0;
1276 /* Suffix to attach to directories searched for commands.
1277 This is just `MACHINE/'. */
1279 static const char *just_machine_suffix = 0;
1281 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1283 static const char *gcc_exec_prefix;
1285 /* Default prefixes to attach to command names. */
1287 #ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */
1288 #undef MD_EXEC_PREFIX
1289 #undef MD_STARTFILE_PREFIX
1290 #undef MD_STARTFILE_PREFIX_1
1293 /* If no prefixes defined, use the null string, which will disable them. */
1294 #ifndef MD_EXEC_PREFIX
1295 #define MD_EXEC_PREFIX ""
1297 #ifndef MD_STARTFILE_PREFIX
1298 #define MD_STARTFILE_PREFIX ""
1300 #ifndef MD_STARTFILE_PREFIX_1
1301 #define MD_STARTFILE_PREFIX_1 ""
1304 /* Supply defaults for the standard prefixes. */
1306 #ifndef STANDARD_EXEC_PREFIX
1307 #define STANDARD_EXEC_PREFIX "/usr/local/lib/gcc-lib/"
1309 #ifndef STANDARD_STARTFILE_PREFIX
1310 #define STANDARD_STARTFILE_PREFIX "/usr/local/lib/"
1312 #ifndef TOOLDIR_BASE_PREFIX
1313 #define TOOLDIR_BASE_PREFIX "/usr/local/"
1315 #ifndef STANDARD_BINDIR_PREFIX
1316 #define STANDARD_BINDIR_PREFIX "/usr/local/bin"
1319 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1320 static const char *const standard_exec_prefix_1 = "/usr/lib/gcc/";
1321 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1323 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1324 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1325 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1326 static const char *const standard_startfile_prefix_1 = "/lib/";
1327 static const char *const standard_startfile_prefix_2 = "/usr/lib/";
1329 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1330 static const char *tooldir_prefix;
1332 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1334 /* Subdirectory to use for locating libraries. Set by
1335 set_multilib_dir based on the compilation options. */
1337 static const char *multilib_dir;
1339 /* Structure to keep track of the specs that have been defined so far.
1340 These are accessed using %(specname) or %[specname] in a compiler
1345 /* The following 2 fields must be first */
1346 /* to allow EXTRA_SPECS to be initialized */
1347 const char *name; /* name of the spec. */
1348 const char *ptr; /* available ptr if no static pointer */
1350 /* The following fields are not initialized */
1351 /* by EXTRA_SPECS */
1352 const char **ptr_spec; /* pointer to the spec itself. */
1353 struct spec_list *next; /* Next spec in linked list. */
1354 int name_len; /* length of the name */
1355 int alloc_p; /* whether string was allocated */
1358 #define INIT_STATIC_SPEC(NAME,PTR) \
1359 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1361 /* List of statically defined specs. */
1362 static struct spec_list static_specs[] =
1364 INIT_STATIC_SPEC ("asm", &asm_spec),
1365 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1366 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1367 INIT_STATIC_SPEC ("asm_options", &asm_options),
1368 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1369 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1370 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1371 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1372 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1373 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1374 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1375 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1376 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1377 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1378 INIT_STATIC_SPEC ("link", &link_spec),
1379 INIT_STATIC_SPEC ("lib", &lib_spec),
1380 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1381 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1382 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces),
1383 INIT_STATIC_SPEC ("predefines", &cpp_predefines),
1384 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1385 INIT_STATIC_SPEC ("version", &compiler_version),
1386 INIT_STATIC_SPEC ("multilib", &multilib_select),
1387 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1388 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1389 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1390 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1391 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1392 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1393 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1394 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1395 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1398 #ifdef EXTRA_SPECS /* additional specs needed */
1399 /* Structure to keep track of just the first two args of a spec_list.
1400 That is all that the EXTRA_SPECS macro gives us. */
1403 const char *const name;
1404 const char *const ptr;
1407 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1408 static struct spec_list *extra_specs = (struct spec_list *) 0;
1411 /* List of dynamically allocates specs that have been defined so far. */
1413 static struct spec_list *specs = (struct spec_list *) 0;
1415 /* Add appropriate libgcc specs to OBSTACK, taking into account
1416 various permutations of -shared-libgcc, -shared, and such. */
1418 #ifdef ENABLE_SHARED_LIBGCC
1420 init_gcc_specs (obstack, shared_name, static_name, eh_name)
1421 struct obstack *obstack;
1422 const char *shared_name;
1423 const char *static_name;
1424 const char *eh_name;
1428 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name,
1429 "}%{!static:%{!static-libgcc:",
1430 "%{!shared:%{!shared-libgcc:", static_name, " ",
1431 eh_name, "}%{shared-libgcc:", shared_name, " ",
1432 static_name, "}}%{shared:",
1434 "%{shared-libgcc:", shared_name,
1435 "}%{!shared-libgcc:", static_name, "}",
1441 obstack_grow (obstack, buf, strlen (buf));
1444 #endif /* ENABLE_SHARED_LIBGCC */
1446 /* Initialize the specs lookup routines. */
1451 struct spec_list *next = (struct spec_list *) 0;
1452 struct spec_list *sl = (struct spec_list *) 0;
1456 return; /* Already initialized. */
1459 notice ("Using built-in specs.\n");
1462 extra_specs = (struct spec_list *)
1463 xcalloc (sizeof (struct spec_list), ARRAY_SIZE (extra_specs_1));
1465 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1467 sl = &extra_specs[i];
1468 sl->name = extra_specs_1[i].name;
1469 sl->ptr = extra_specs_1[i].ptr;
1471 sl->name_len = strlen (sl->name);
1472 sl->ptr_spec = &sl->ptr;
1477 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1479 sl = &static_specs[i];
1484 #ifdef ENABLE_SHARED_LIBGCC
1485 /* ??? If neither -shared-libgcc nor --static-libgcc was
1486 seen, then we should be making an educated guess. Some proposed
1487 heuristics for ELF include:
1489 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1490 program will be doing dynamic loading, which will likely
1491 need the shared libgcc.
1493 (2) If "-ldl", then it's also a fair bet that we're doing
1496 (3) For each ET_DYN we're linking against (either through -lfoo
1497 or /some/path/foo.so), check to see whether it or one of
1498 its dependencies depends on a shared libgcc.
1502 If the runtime is fixed to look for program headers instead
1503 of calling __register_frame_info at all, for each object,
1504 use the shared libgcc if any EH symbol referenced.
1506 If crtstuff is fixed to not invoke __register_frame_info
1507 automatically, for each object, use the shared libgcc if
1508 any non-empty unwind section found.
1510 Doing any of this probably requires invoking an external program to
1511 do the actual object file scanning. */
1513 const char *p = libgcc_spec;
1516 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1517 when given the proper command line arguments. */
1520 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1522 init_gcc_specs (&obstack,
1523 #ifdef NO_SHARED_LIBGCC_MULTILIB
1534 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1536 /* Ug. We don't know shared library extensions. Hope that
1537 systems that use this form don't do shared libraries. */
1538 init_gcc_specs (&obstack,
1539 #ifdef NO_SHARED_LIBGCC_MULTILIB
1552 obstack_1grow (&obstack, *p);
1553 in_sep = (*p == ' ');
1558 obstack_1grow (&obstack, '\0');
1559 libgcc_spec = obstack_finish (&obstack);
1562 #ifdef USE_AS_TRADITIONAL_FORMAT
1563 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1565 static const char tf[] = "--traditional-format ";
1566 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1567 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1568 asm_spec = obstack_finish (&obstack);
1572 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1573 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1574 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1575 link_spec = obstack_finish (&obstack);
1581 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1582 removed; If the spec starts with a + then SPEC is added to the end of the
1586 set_spec (name, spec)
1590 struct spec_list *sl;
1591 const char *old_spec;
1592 int name_len = strlen (name);
1595 /* If this is the first call, initialize the statically allocated specs. */
1598 struct spec_list *next = (struct spec_list *) 0;
1599 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1601 sl = &static_specs[i];
1608 /* See if the spec already exists. */
1609 for (sl = specs; sl; sl = sl->next)
1610 if (name_len == sl->name_len && !strcmp (sl->name, name))
1615 /* Not found - make it. */
1616 sl = (struct spec_list *) xmalloc (sizeof (struct spec_list));
1617 sl->name = xstrdup (name);
1618 sl->name_len = name_len;
1619 sl->ptr_spec = &sl->ptr;
1621 *(sl->ptr_spec) = "";
1626 old_spec = *(sl->ptr_spec);
1627 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1628 ? concat (old_spec, spec + 1, NULL)
1633 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1636 /* Free the old spec. */
1637 if (old_spec && sl->alloc_p)
1638 free ((PTR) old_spec);
1643 /* Accumulate a command (program name and args), and run it. */
1645 /* Vector of pointers to arguments in the current line of specifications. */
1647 static const char **argbuf;
1649 /* Number of elements allocated in argbuf. */
1651 static int argbuf_length;
1653 /* Number of elements in argbuf currently in use (containing args). */
1655 static int argbuf_index;
1657 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1658 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1661 static struct temp_name {
1662 const char *suffix; /* suffix associated with the code. */
1663 int length; /* strlen (suffix). */
1664 int unique; /* Indicates whether %g or %u/%U was used. */
1665 const char *filename; /* associated filename. */
1666 int filename_length; /* strlen (filename). */
1667 struct temp_name *next;
1670 /* Number of commands executed so far. */
1672 static int execution_count;
1674 /* Number of commands that exited with a signal. */
1676 static int signal_count;
1678 /* Name with which this program was invoked. */
1680 static const char *programname;
1682 /* Clear out the vector of arguments (after a command is executed). */
1690 /* Add one argument to the vector at the end.
1691 This is done when a space is seen or at the end of the line.
1692 If DELETE_ALWAYS is nonzero, the arg is a filename
1693 and the file should be deleted eventually.
1694 If DELETE_FAILURE is nonzero, the arg is a filename
1695 and the file should be deleted if this compilation fails. */
1698 store_arg (arg, delete_always, delete_failure)
1700 int delete_always, delete_failure;
1702 if (argbuf_index + 1 == argbuf_length)
1704 = (const char **) xrealloc (argbuf,
1705 (argbuf_length *= 2) * sizeof (const char *));
1707 argbuf[argbuf_index++] = arg;
1708 argbuf[argbuf_index] = 0;
1710 if (delete_always || delete_failure)
1711 record_temp_file (arg, delete_always, delete_failure);
1714 /* Load specs from a file name named FILENAME, replacing occurrences of
1715 various different types of line-endings, \r\n, \n\r and just \r, with
1719 load_specs (filename)
1720 const char *filename;
1724 struct stat statbuf;
1731 notice ("Reading specs from %s\n", filename);
1733 /* Open and stat the file. */
1734 desc = open (filename, O_RDONLY, 0);
1736 pfatal_with_name (filename);
1737 if (stat (filename, &statbuf) < 0)
1738 pfatal_with_name (filename);
1740 /* Read contents of file into BUFFER. */
1741 buffer = xmalloc ((unsigned) statbuf.st_size + 1);
1742 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1744 pfatal_with_name (filename);
1745 buffer[readlen] = 0;
1748 specs = xmalloc (readlen + 1);
1750 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1756 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1758 else if (*(buffer_p + 1) == '\n') /* \r\n */
1772 /* Read compilation specs from a file named FILENAME,
1773 replacing the default ones.
1775 A suffix which starts with `*' is a definition for
1776 one of the machine-specific sub-specs. The "suffix" should be
1777 *asm, *cc1, *cpp, *link, *startfile, etc.
1778 The corresponding spec is stored in asm_spec, etc.,
1779 rather than in the `compilers' vector.
1781 Anything invalid in the file is a fatal error. */
1784 read_specs (filename, main_p)
1785 const char *filename;
1791 buffer = load_specs (filename);
1793 /* Scan BUFFER for specs, putting them in the vector. */
1799 char *in, *out, *p1, *p2, *p3;
1801 /* Advance P in BUFFER to the next nonblank nocomment line. */
1802 p = skip_whitespace (p);
1806 /* Is this a special command that starts with '%'? */
1807 /* Don't allow this for the main specs file, since it would
1808 encourage people to overwrite it. */
1809 if (*p == '%' && !main_p)
1812 while (*p && *p != '\n')
1818 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1819 && (p1[sizeof "%include" - 1] == ' '
1820 || p1[sizeof "%include" - 1] == '\t'))
1824 p1 += sizeof ("%include");
1825 while (*p1 == ' ' || *p1 == '\t')
1828 if (*p1++ != '<' || p[-2] != '>')
1829 fatal ("specs %%include syntax malformed after %ld characters",
1830 (long) (p1 - buffer + 1));
1833 new_filename = find_a_file (&startfile_prefixes, p1, R_OK);
1834 read_specs (new_filename ? new_filename : p1, FALSE);
1837 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1838 && (p1[sizeof "%include_noerr" - 1] == ' '
1839 || p1[sizeof "%include_noerr" - 1] == '\t'))
1843 p1 += sizeof "%include_noerr";
1844 while (*p1 == ' ' || *p1 == '\t')
1847 if (*p1++ != '<' || p[-2] != '>')
1848 fatal ("specs %%include syntax malformed after %ld characters",
1849 (long) (p1 - buffer + 1));
1852 new_filename = find_a_file (&startfile_prefixes, p1, R_OK);
1854 read_specs (new_filename, FALSE);
1855 else if (verbose_flag)
1856 notice ("could not find specs file %s\n", p1);
1859 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1860 && (p1[sizeof "%rename" - 1] == ' '
1861 || p1[sizeof "%rename" - 1] == '\t'))
1864 struct spec_list *sl;
1866 /* Get original name */
1867 p1 += sizeof "%rename";
1868 while (*p1 == ' ' || *p1 == '\t')
1871 if (! ISALPHA ((unsigned char) *p1))
1872 fatal ("specs %%rename syntax malformed after %ld characters",
1873 (long) (p1 - buffer));
1876 while (*p2 && !ISSPACE ((unsigned char) *p2))
1879 if (*p2 != ' ' && *p2 != '\t')
1880 fatal ("specs %%rename syntax malformed after %ld characters",
1881 (long) (p2 - buffer));
1885 while (*p2 == ' ' || *p2 == '\t')
1888 if (! ISALPHA ((unsigned char) *p2))
1889 fatal ("specs %%rename syntax malformed after %ld characters",
1890 (long) (p2 - buffer));
1892 /* Get new spec name. */
1894 while (*p3 && !ISSPACE ((unsigned char) *p3))
1898 fatal ("specs %%rename syntax malformed after %ld characters",
1899 (long) (p3 - buffer));
1902 for (sl = specs; sl; sl = sl->next)
1903 if (name_len == sl->name_len && !strcmp (sl->name, p1))
1907 fatal ("specs %s spec was not found to be renamed", p1);
1909 if (strcmp (p1, p2) == 0)
1914 notice ("rename spec %s to %s\n", p1, p2);
1916 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
1920 set_spec (p2, *(sl->ptr_spec));
1922 free ((PTR) *(sl->ptr_spec));
1924 *(sl->ptr_spec) = "";
1929 fatal ("specs unknown %% command after %ld characters",
1930 (long) (p1 - buffer));
1933 /* Find the colon that should end the suffix. */
1935 while (*p1 && *p1 != ':' && *p1 != '\n')
1938 /* The colon shouldn't be missing. */
1940 fatal ("specs file malformed after %ld characters",
1941 (long) (p1 - buffer));
1943 /* Skip back over trailing whitespace. */
1945 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
1948 /* Copy the suffix to a string. */
1949 suffix = save_string (p, p2 - p);
1950 /* Find the next line. */
1951 p = skip_whitespace (p1 + 1);
1953 fatal ("specs file malformed after %ld characters",
1954 (long) (p - buffer));
1957 /* Find next blank line or end of string. */
1958 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
1961 /* Specs end at the blank line and do not include the newline. */
1962 spec = save_string (p, p1 - p);
1965 /* Delete backslash-newline sequences from the spec. */
1970 if (in[0] == '\\' && in[1] == '\n')
1972 else if (in[0] == '#')
1973 while (*in && *in != '\n')
1981 if (suffix[0] == '*')
1983 if (! strcmp (suffix, "*link_command"))
1984 link_command_spec = spec;
1986 set_spec (suffix + 1, spec);
1990 /* Add this pair to the vector. */
1992 = ((struct compiler *)
1993 xrealloc (compilers,
1994 (n_compilers + 2) * sizeof (struct compiler)));
1996 compilers[n_compilers].suffix = suffix;
1997 compilers[n_compilers].spec = spec;
1999 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2003 link_command_spec = spec;
2006 if (link_command_spec == 0)
2007 fatal ("spec file has no spec for linking");
2010 /* Record the names of temporary files we tell compilers to write,
2011 and delete them at the end of the run. */
2013 /* This is the common prefix we use to make temp file names.
2014 It is chosen once for each run of this program.
2015 It is substituted into a spec by %g or %j.
2016 Thus, all temp file names contain this prefix.
2017 In practice, all temp file names start with this prefix.
2019 This prefix comes from the envvar TMPDIR if it is defined;
2020 otherwise, from the P_tmpdir macro if that is defined;
2021 otherwise, in /usr/tmp or /tmp;
2022 or finally the current directory if all else fails. */
2024 static const char *temp_filename;
2026 /* Length of the prefix. */
2028 static int temp_filename_length;
2030 /* Define the list of temporary files to delete. */
2035 struct temp_file *next;
2038 /* Queue of files to delete on success or failure of compilation. */
2039 static struct temp_file *always_delete_queue;
2040 /* Queue of files to delete on failure of compilation. */
2041 static struct temp_file *failure_delete_queue;
2043 /* Record FILENAME as a file to be deleted automatically.
2044 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2045 otherwise delete it in any case.
2046 FAIL_DELETE nonzero means delete it if a compilation step fails;
2047 otherwise delete it in any case. */
2050 record_temp_file (filename, always_delete, fail_delete)
2051 const char *filename;
2055 char *const name = xstrdup (filename);
2059 struct temp_file *temp;
2060 for (temp = always_delete_queue; temp; temp = temp->next)
2061 if (! strcmp (name, temp->name))
2064 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
2065 temp->next = always_delete_queue;
2067 always_delete_queue = temp;
2074 struct temp_file *temp;
2075 for (temp = failure_delete_queue; temp; temp = temp->next)
2076 if (! strcmp (name, temp->name))
2079 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
2080 temp->next = failure_delete_queue;
2082 failure_delete_queue = temp;
2088 /* Delete all the temporary files whose names we previously recorded. */
2091 delete_if_ordinary (name)
2098 printf ("Delete %s? (y or n) ", name);
2102 while ((c = getchar ()) != '\n' && c != EOF)
2105 if (i == 'y' || i == 'Y')
2107 if (stat (name, &st) >= 0 && S_ISREG (st.st_mode))
2108 if (unlink (name) < 0)
2110 perror_with_name (name);
2114 delete_temp_files ()
2116 struct temp_file *temp;
2118 for (temp = always_delete_queue; temp; temp = temp->next)
2119 delete_if_ordinary (temp->name);
2120 always_delete_queue = 0;
2123 /* Delete all the files to be deleted on error. */
2126 delete_failure_queue ()
2128 struct temp_file *temp;
2130 for (temp = failure_delete_queue; temp; temp = temp->next)
2131 delete_if_ordinary (temp->name);
2135 clear_failure_queue ()
2137 failure_delete_queue = 0;
2140 /* Build a list of search directories from PATHS.
2141 PREFIX is a string to prepend to the list.
2142 If CHECK_DIR_P is non-zero we ensure the directory exists.
2143 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2144 It is also used by the --print-search-dirs flag. */
2147 build_search_list (paths, prefix, check_dir_p)
2148 struct path_prefix *paths;
2152 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0;
2154 = (just_machine_suffix) ? strlen (just_machine_suffix) : 0;
2155 int first_time = TRUE;
2156 struct prefix_list *pprefix;
2158 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2159 obstack_1grow (&collect_obstack, '=');
2161 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next)
2163 int len = strlen (pprefix->prefix);
2167 || is_directory (pprefix->prefix, machine_suffix, 0)))
2170 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2173 obstack_grow (&collect_obstack, pprefix->prefix, len);
2174 obstack_grow (&collect_obstack, machine_suffix, suffix_len);
2177 if (just_machine_suffix
2178 && pprefix->require_machine_suffix == 2
2180 || is_directory (pprefix->prefix, just_machine_suffix, 0)))
2183 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2186 obstack_grow (&collect_obstack, pprefix->prefix, len);
2187 obstack_grow (&collect_obstack, just_machine_suffix,
2191 if (! pprefix->require_machine_suffix)
2194 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2197 obstack_grow (&collect_obstack, pprefix->prefix, len);
2201 obstack_1grow (&collect_obstack, '\0');
2202 return obstack_finish (&collect_obstack);
2205 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2209 putenv_from_prefixes (paths, env_var)
2210 struct path_prefix *paths;
2211 const char *env_var;
2213 putenv (build_search_list (paths, env_var, 1));
2218 /* FIXME: the location independence code for VMS is hairier than this,
2219 and hasn't been written. */
2221 /* Split a filename into component directories. */
2224 split_directories (name, ptr_num_dirs)
2233 /* Count the number of directories. Special case MSDOS disk names as part
2234 of the initial directory. */
2236 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2237 if (name[1] == ':' && IS_DIR_SEPARATOR (name[2]))
2242 #endif /* HAVE_DOS_BASED_FILE_SYSTEM */
2244 while ((ch = *p++) != '\0')
2246 if (IS_DIR_SEPARATOR (ch))
2249 while (IS_DIR_SEPARATOR (*p))
2254 dirs = (char **) xmalloc (sizeof (char *) * (num_dirs + 2));
2256 /* Now copy the directory parts. */
2259 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2260 if (name[1] == ':' && IS_DIR_SEPARATOR (name[2]))
2262 dirs[num_dirs++] = save_string (p, 3);
2265 #endif /* HAVE_DOS_BASED_FILE_SYSTEM */
2268 while ((ch = *p++) != '\0')
2270 if (IS_DIR_SEPARATOR (ch))
2272 while (IS_DIR_SEPARATOR (*p))
2275 dirs[num_dirs++] = save_string (q, p - q);
2281 dirs[num_dirs++] = save_string (q, p - 1 - q);
2283 dirs[num_dirs] = NULL;
2285 *ptr_num_dirs = num_dirs;
2290 /* Release storage held by split directories. */
2293 free_split_directories (dirs)
2298 while (dirs[i] != NULL)
2301 free ((char *) dirs);
2304 /* Given three strings PROGNAME, BIN_PREFIX, PREFIX, return a string that gets
2305 to PREFIX starting with the directory portion of PROGNAME and a relative
2306 pathname of the difference between BIN_PREFIX and PREFIX.
2308 For example, if BIN_PREFIX is /alpha/beta/gamma/gcc/delta, PREFIX is
2309 /alpha/beta/gamma/omega/, and PROGNAME is /red/green/blue/gcc, then this
2310 function will return /red/green/blue/../omega.
2312 If no relative prefix can be found, return NULL. */
2315 make_relative_prefix (progname, bin_prefix, prefix)
2316 const char *progname;
2317 const char *bin_prefix;
2320 char **prog_dirs, **bin_dirs, **prefix_dirs;
2321 int prog_num, bin_num, prefix_num, std_loc_p;
2324 prog_dirs = split_directories (progname, &prog_num);
2325 bin_dirs = split_directories (bin_prefix, &bin_num);
2327 /* If there is no full pathname, try to find the program by checking in each
2328 of the directories specified in the PATH environment variable. */
2333 GET_ENV_PATH_LIST (temp, "PATH");
2336 char *startp, *endp, *nstore;
2337 size_t prefixlen = strlen (temp) + 1;
2341 nstore = (char *) alloca (prefixlen + strlen (progname) + 1);
2343 startp = endp = temp;
2346 if (*endp == PATH_SEPARATOR || *endp == 0)
2351 nstore[1] = DIR_SEPARATOR;
2356 strncpy (nstore, startp, endp - startp);
2357 if (! IS_DIR_SEPARATOR (endp[-1]))
2359 nstore[endp - startp] = DIR_SEPARATOR;
2360 nstore[endp - startp + 1] = 0;
2363 nstore[endp - startp] = 0;
2365 strcat (nstore, progname);
2366 if (! access (nstore, X_OK)
2367 #ifdef HAVE_HOST_EXECUTABLE_SUFFIX
2368 || ! access (strcat (nstore, HOST_EXECUTABLE_SUFFIX), X_OK)
2372 free_split_directories (prog_dirs);
2374 prog_dirs = split_directories (progname, &prog_num);
2380 endp = startp = endp + 1;
2388 /* Remove the program name from comparison of directory names. */
2391 /* Determine if the compiler is installed in the standard location, and if
2392 so, we don't need to specify relative directories. Also, if argv[0]
2393 doesn't contain any directory specifiers, there is not much we can do. */
2395 if (prog_num == bin_num)
2397 for (i = 0; i < bin_num; i++)
2399 if (strcmp (prog_dirs[i], bin_dirs[i]) != 0)
2403 if (prog_num <= 0 || i == bin_num)
2406 free_split_directories (prog_dirs);
2407 free_split_directories (bin_dirs);
2408 prog_dirs = bin_dirs = (char **) 0;
2413 prefix_dirs = split_directories (prefix, &prefix_num);
2415 /* Find how many directories are in common between bin_prefix & prefix. */
2416 n = (prefix_num < bin_num) ? prefix_num : bin_num;
2417 for (common = 0; common < n; common++)
2419 if (strcmp (bin_dirs[common], prefix_dirs[common]) != 0)
2423 /* If there are no common directories, there can be no relative prefix. */
2426 free_split_directories (prog_dirs);
2427 free_split_directories (bin_dirs);
2428 free_split_directories (prefix_dirs);
2432 /* Build up the pathnames in argv[0]. */
2433 for (i = 0; i < prog_num; i++)
2434 obstack_grow (&obstack, prog_dirs[i], strlen (prog_dirs[i]));
2436 /* Now build up the ..'s. */
2437 for (i = common; i < n; i++)
2439 obstack_grow (&obstack, DIR_UP, sizeof (DIR_UP) - 1);
2440 obstack_1grow (&obstack, DIR_SEPARATOR);
2443 /* Put in directories to move over to prefix. */
2444 for (i = common; i < prefix_num; i++)
2445 obstack_grow (&obstack, prefix_dirs[i], strlen (prefix_dirs[i]));
2447 free_split_directories (prog_dirs);
2448 free_split_directories (bin_dirs);
2449 free_split_directories (prefix_dirs);
2451 obstack_1grow (&obstack, '\0');
2452 return obstack_finish (&obstack);
2456 /* Check whether NAME can be accessed in MODE. This is like access,
2457 except that it never considers directories to be executable. */
2460 access_check (name, mode)
2468 if (stat (name, &st) < 0
2469 || S_ISDIR (st.st_mode))
2473 return access (name, mode);
2476 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2477 access to check permissions.
2478 Return 0 if not found, otherwise return its name, allocated with malloc. */
2481 find_a_file (pprefix, name, mode)
2482 struct path_prefix *pprefix;
2487 const char *const file_suffix =
2488 ((mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "");
2489 struct prefix_list *pl;
2490 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1;
2492 #ifdef DEFAULT_ASSEMBLER
2493 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2494 return xstrdup (DEFAULT_ASSEMBLER);
2497 #ifdef DEFAULT_LINKER
2498 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2499 return xstrdup (DEFAULT_LINKER);
2503 len += strlen (machine_suffix);
2505 temp = xmalloc (len);
2507 /* Determine the filename to execute (special case for absolute paths). */
2509 if (IS_ABSOLUTE_PATHNAME (name))
2511 if (access (name, mode) == 0)
2513 strcpy (temp, name);
2518 for (pl = pprefix->plist; pl; pl = pl->next)
2522 /* Some systems have a suffix for executable files.
2523 So try appending that first. */
2524 if (file_suffix[0] != 0)
2526 strcpy (temp, pl->prefix);
2527 strcat (temp, machine_suffix);
2528 strcat (temp, name);
2529 strcat (temp, file_suffix);
2530 if (access_check (temp, mode) == 0)
2532 if (pl->used_flag_ptr != 0)
2533 *pl->used_flag_ptr = 1;
2538 /* Now try just the name. */
2539 strcpy (temp, pl->prefix);
2540 strcat (temp, machine_suffix);
2541 strcat (temp, name);
2542 if (access_check (temp, mode) == 0)
2544 if (pl->used_flag_ptr != 0)
2545 *pl->used_flag_ptr = 1;
2550 /* Certain prefixes are tried with just the machine type,
2551 not the version. This is used for finding as, ld, etc. */
2552 if (just_machine_suffix && pl->require_machine_suffix == 2)
2554 /* Some systems have a suffix for executable files.
2555 So try appending that first. */
2556 if (file_suffix[0] != 0)
2558 strcpy (temp, pl->prefix);
2559 strcat (temp, just_machine_suffix);
2560 strcat (temp, name);
2561 strcat (temp, file_suffix);
2562 if (access_check (temp, mode) == 0)
2564 if (pl->used_flag_ptr != 0)
2565 *pl->used_flag_ptr = 1;
2570 strcpy (temp, pl->prefix);
2571 strcat (temp, just_machine_suffix);
2572 strcat (temp, name);
2573 if (access_check (temp, mode) == 0)
2575 if (pl->used_flag_ptr != 0)
2576 *pl->used_flag_ptr = 1;
2581 /* Certain prefixes can't be used without the machine suffix
2582 when the machine or version is explicitly specified. */
2583 if (! pl->require_machine_suffix)
2585 /* Some systems have a suffix for executable files.
2586 So try appending that first. */
2587 if (file_suffix[0] != 0)
2589 strcpy (temp, pl->prefix);
2590 strcat (temp, name);
2591 strcat (temp, file_suffix);
2592 if (access_check (temp, mode) == 0)
2594 if (pl->used_flag_ptr != 0)
2595 *pl->used_flag_ptr = 1;
2600 strcpy (temp, pl->prefix);
2601 strcat (temp, name);
2602 if (access_check (temp, mode) == 0)
2604 if (pl->used_flag_ptr != 0)
2605 *pl->used_flag_ptr = 1;
2615 /* Ranking of prefixes in the sort list. -B prefixes are put before
2618 enum path_prefix_priority
2620 PREFIX_PRIORITY_B_OPT,
2621 PREFIX_PRIORITY_LAST
2624 /* Add an entry for PREFIX in PLIST. The PLIST is kept in assending
2625 order according to PRIORITY. Within each PRIORITY, new entries are
2628 If WARN is nonzero, we will warn if no file is found
2629 through this prefix. WARN should point to an int
2630 which will be set to 1 if this entry is used.
2632 COMPONENT is the value to be passed to update_path.
2634 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2635 the complete value of machine_suffix.
2636 2 means try both machine_suffix and just_machine_suffix. */
2639 add_prefix (pprefix, prefix, component, priority, require_machine_suffix, warn)
2640 struct path_prefix *pprefix;
2642 const char *component;
2643 /* enum prefix_priority */ int priority;
2644 int require_machine_suffix;
2647 struct prefix_list *pl, **prev;
2650 for (prev = &pprefix->plist;
2651 (*prev) != NULL && (*prev)->priority <= priority;
2652 prev = &(*prev)->next)
2655 /* Keep track of the longest prefix */
2657 prefix = update_path (prefix, component);
2658 len = strlen (prefix);
2659 if (len > pprefix->max_len)
2660 pprefix->max_len = len;
2662 pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
2663 pl->prefix = prefix;
2664 pl->require_machine_suffix = require_machine_suffix;
2665 pl->used_flag_ptr = warn;
2666 pl->priority = priority;
2670 /* Insert after PREV */
2675 /* Execute the command specified by the arguments on the current line of spec.
2676 When using pipes, this includes several piped-together commands
2677 with `|' between them.
2679 Return 0 if successful, -1 if failed. */
2685 int n_commands; /* # of command. */
2689 const char *prog; /* program name. */
2690 const char **argv; /* vector of args. */
2691 int pid; /* pid of process for this command. */
2694 struct command *commands; /* each command buffer with above info. */
2696 /* Count # of piped commands. */
2697 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2698 if (strcmp (argbuf[i], "|") == 0)
2701 /* Get storage for each command. */
2702 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2704 /* Split argbuf into its separate piped processes,
2705 and record info about each one.
2706 Also search for the programs that are to be run. */
2708 commands[0].prog = argbuf[0]; /* first command. */
2709 commands[0].argv = &argbuf[0];
2710 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK);
2713 commands[0].argv[0] = string;
2715 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2716 if (strcmp (argbuf[i], "|") == 0)
2717 { /* each command. */
2718 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2719 fatal ("-pipe not supported");
2721 argbuf[i] = 0; /* termination of command args. */
2722 commands[n_commands].prog = argbuf[i + 1];
2723 commands[n_commands].argv = &argbuf[i + 1];
2724 string = find_a_file (&exec_prefixes, commands[n_commands].prog, X_OK);
2726 commands[n_commands].argv[0] = string;
2730 argbuf[argbuf_index] = 0;
2732 /* If -v, print what we are about to do, and maybe query. */
2736 /* For help listings, put a blank line between sub-processes. */
2737 if (print_help_list)
2738 fputc ('\n', stderr);
2740 /* Print each piped command as a separate line. */
2741 for (i = 0; i < n_commands; i++)
2743 const char *const *j;
2745 if (verbose_only_flag)
2747 for (j = commands[i].argv; *j; j++)
2750 fprintf (stderr, " \"");
2751 for (p = *j; *p; ++p)
2753 if (*p == '"' || *p == '\\' || *p == '$')
2754 fputc ('\\', stderr);
2757 fputc ('"', stderr);
2761 for (j = commands[i].argv; *j; j++)
2762 fprintf (stderr, " %s", *j);
2764 /* Print a pipe symbol after all but the last command. */
2765 if (i + 1 != n_commands)
2766 fprintf (stderr, " |");
2767 fprintf (stderr, "\n");
2770 if (verbose_only_flag != 0)
2773 notice ("\nGo ahead? (y or n) ");
2777 while (getchar () != '\n')
2780 if (i != 'y' && i != 'Y')
2785 /* Run each piped subprocess. */
2787 for (i = 0; i < n_commands; i++)
2789 char *errmsg_fmt, *errmsg_arg;
2790 const char *string = commands[i].argv[0];
2792 /* For some bizarre reason, the second argument of execvp() is
2793 char *const *, not const char *const *. */
2794 commands[i].pid = pexecute (string, (char *const *) commands[i].argv,
2795 programname, temp_filename,
2796 &errmsg_fmt, &errmsg_arg,
2797 ((i == 0 ? PEXECUTE_FIRST : 0)
2798 | (i + 1 == n_commands ? PEXECUTE_LAST : 0)
2799 | (string == commands[i].prog
2800 ? PEXECUTE_SEARCH : 0)
2801 | (verbose_flag ? PEXECUTE_VERBOSE : 0)));
2803 if (commands[i].pid == -1)
2804 pfatal_pexecute (errmsg_fmt, errmsg_arg);
2806 if (string != commands[i].prog)
2807 free ((PTR) string);
2812 /* Wait for all the subprocesses to finish.
2813 We don't care what order they finish in;
2814 we know that N_COMMANDS waits will get them all.
2815 Ignore subprocesses that we don't know about,
2816 since they can be spawned by the process that exec'ed us. */
2820 #ifdef HAVE_GETRUSAGE
2822 double ut = 0.0, st = 0.0;
2825 for (i = 0; i < n_commands;)
2831 pid = pwait (commands[i].pid, &status, 0);
2835 #ifdef HAVE_GETRUSAGE
2838 /* getrusage returns the total resource usage of all children
2839 up to now. Copy the previous values into prus, get the
2840 current statistics, then take the difference. */
2843 getrusage (RUSAGE_CHILDREN, &rus);
2844 d.tv_sec = rus.ru_utime.tv_sec - prus.ru_utime.tv_sec;
2845 d.tv_usec = rus.ru_utime.tv_usec - prus.ru_utime.tv_usec;
2846 ut = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2848 d.tv_sec = rus.ru_stime.tv_sec - prus.ru_stime.tv_sec;
2849 d.tv_usec = rus.ru_stime.tv_usec - prus.ru_stime.tv_usec;
2850 st = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2854 for (j = 0; j < n_commands; j++)
2855 if (commands[j].pid == pid)
2858 if (WIFSIGNALED (status))
2861 /* SIGPIPE is a special case. It happens in -pipe mode
2862 when the compiler dies before the preprocessor is
2863 done, or the assembler dies before the compiler is
2864 done. There's generally been an error already, and
2865 this is just fallout. So don't generate another error
2866 unless we would otherwise have succeeded. */
2867 if (WTERMSIG (status) == SIGPIPE
2868 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2873 Internal error: %s (program %s)\n\
2874 Please submit a full bug report.\n\
2875 See %s for instructions.",
2876 strsignal (WTERMSIG (status)), commands[j].prog,
2881 else if (WIFEXITED (status)
2882 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2884 if (WEXITSTATUS (status) > greatest_status)
2885 greatest_status = WEXITSTATUS (status);
2888 #ifdef HAVE_GETRUSAGE
2889 if (report_times && ut + st != 0)
2890 notice ("# %s %.2f %.2f\n", commands[j].prog, ut, st);
2899 /* Find all the switches given to us
2900 and make a vector describing them.
2901 The elements of the vector are strings, one per switch given.
2902 If a switch uses following arguments, then the `part1' field
2903 is the switch itself and the `args' field
2904 is a null-terminated vector containing the following arguments.
2905 The `live_cond' field is:
2907 1 if the switch is true in a conditional spec,
2908 -1 if false (overridden by a later switch)
2909 -2 if this switch should be ignored (used in %{<S})
2910 The `validated' field is nonzero if any spec has looked at this switch;
2911 if it remains zero at the end of the run, it must be meaningless. */
2914 #define SWITCH_FALSE -1
2915 #define SWITCH_IGNORE -2
2916 #define SWITCH_LIVE 1
2923 unsigned char validated;
2924 unsigned char ordering;
2927 static struct switchstr *switches;
2929 static int n_switches;
2934 const char *language;
2937 /* Also a vector of input files specified. */
2939 static struct infile *infiles;
2943 /* This counts the number of libraries added by lang_specific_driver, so that
2944 we can tell if there were any user supplied any files or libraries. */
2946 static int added_libraries;
2948 /* And a vector of corresponding output files is made up later. */
2950 const char **outfiles;
2952 /* Used to track if none of the -B paths are used. */
2955 /* Used to track if standard path isn't used and -b or -V is specified. */
2956 static int warn_std;
2958 /* Gives value to pass as "warn" to add_prefix for standard prefixes. */
2959 static int *warn_std_ptr = 0;
2961 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2963 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2964 is true if we should look for an executable suffix. DO_OBJ
2965 is true if we should look for an object suffix. */
2968 convert_filename (name, do_exe, do_obj)
2970 int do_exe ATTRIBUTE_UNUSED;
2971 int do_obj ATTRIBUTE_UNUSED;
2973 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2981 len = strlen (name);
2983 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2984 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2985 if (do_obj && len > 2
2986 && name[len - 2] == '.'
2987 && name[len - 1] == 'o')
2989 obstack_grow (&obstack, name, len - 2);
2990 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2991 name = obstack_finish (&obstack);
2995 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2996 /* If there is no filetype, make it the executable suffix (which includes
2997 the "."). But don't get confused if we have just "-o". */
2998 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
3001 for (i = len - 1; i >= 0; i--)
3002 if (IS_DIR_SEPARATOR (name[i]))
3005 for (i++; i < len; i++)
3009 obstack_grow (&obstack, name, len);
3010 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
3011 strlen (TARGET_EXECUTABLE_SUFFIX));
3012 name = obstack_finish (&obstack);
3019 /* Display the command line switches accepted by gcc. */
3023 printf (_("Usage: %s [options] file...\n"), programname);
3024 fputs (_("Options:\n"), stdout);
3026 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
3027 fputs (_(" --help Display this information\n"), stdout);
3028 fputs (_(" --target-help Display target specific command line options\n"), stdout);
3030 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
3031 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
3032 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
3033 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
3034 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
3035 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
3036 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
3037 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
3038 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
3040 -print-multi-lib Display the mapping between command line options and\n\
3041 multiple library search directories\n"), stdout);
3042 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3043 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3044 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3045 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3046 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3047 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3048 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3049 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3050 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3051 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3052 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
3053 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
3054 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3055 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3056 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3057 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3058 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3059 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3061 -x <language> Specify the language of the following input files\n\
3062 Permissable languages include: c c++ assembler none\n\
3063 'none' means revert to the default behavior of\n\
3064 guessing the language based on the file's extension\n\
3068 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3069 passed on to the various sub-processes invoked by %s. In order to pass\n\
3070 other options on to these processes the -W<letter> options must be used.\n\
3073 /* The rest of the options are displayed by invocations of the various
3078 add_preprocessor_option (option, len)
3082 n_preprocessor_options++;
3084 if (! preprocessor_options)
3085 preprocessor_options
3086 = (char **) xmalloc (n_preprocessor_options * sizeof (char *));
3088 preprocessor_options
3089 = (char **) xrealloc (preprocessor_options,
3090 n_preprocessor_options * sizeof (char *));
3092 preprocessor_options [n_preprocessor_options - 1] =
3093 save_string (option, len);
3097 add_assembler_option (option, len)
3101 n_assembler_options++;
3103 if (! assembler_options)
3105 = (char **) xmalloc (n_assembler_options * sizeof (char *));
3108 = (char **) xrealloc (assembler_options,
3109 n_assembler_options * sizeof (char *));
3111 assembler_options [n_assembler_options - 1] = save_string (option, len);
3115 add_linker_option (option, len)
3121 if (! linker_options)
3123 = (char **) xmalloc (n_linker_options * sizeof (char *));
3126 = (char **) xrealloc (linker_options,
3127 n_linker_options * sizeof (char *));
3129 linker_options [n_linker_options - 1] = save_string (option, len);
3132 /* Create the vector `switches' and its contents.
3133 Store its length in `n_switches'. */
3136 process_command (argc, argv)
3138 const char *const *argv;
3143 const char *spec_lang = 0;
3144 int last_language_n_infiles;
3147 int lang_n_infiles = 0;
3148 #ifdef MODIFY_TARGET_NAME
3149 int is_modify_target_name;
3153 GET_ENV_PATH_LIST (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3157 added_libraries = 0;
3159 /* Figure compiler version from version string. */
3161 compiler_version = temp1 = xstrdup (version_string);
3163 for (; *temp1; ++temp1)
3172 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3173 see if we can create it from the pathname specified in argv[0]. */
3176 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3177 if (!gcc_exec_prefix)
3179 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
3180 standard_exec_prefix);
3181 if (gcc_exec_prefix)
3182 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3186 if (gcc_exec_prefix)
3188 int len = strlen (gcc_exec_prefix);
3190 if (len > (int) sizeof ("/lib/gcc-lib/") - 1
3191 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3193 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc-lib/") + 1;
3194 if (IS_DIR_SEPARATOR (*temp)
3195 && strncmp (temp + 1, "lib", 3) == 0
3196 && IS_DIR_SEPARATOR (temp[4])
3197 && strncmp (temp + 5, "gcc-lib", 7) == 0)
3198 len -= sizeof ("/lib/gcc-lib/") - 1;
3201 set_std_prefix (gcc_exec_prefix, len);
3202 add_prefix (&exec_prefixes, gcc_exec_prefix, "GCC",
3203 PREFIX_PRIORITY_LAST, 0, NULL);
3204 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3205 PREFIX_PRIORITY_LAST, 0, NULL);
3208 /* COMPILER_PATH and LIBRARY_PATH have values
3209 that are lists of directory names with colons. */
3211 GET_ENV_PATH_LIST (temp, "COMPILER_PATH");
3214 const char *startp, *endp;
3215 char *nstore = (char *) alloca (strlen (temp) + 3);
3217 startp = endp = temp;
3220 if (*endp == PATH_SEPARATOR || *endp == 0)
3222 strncpy (nstore, startp, endp - startp);
3224 strcpy (nstore, concat (".", dir_separator_str, NULL));
3225 else if (!IS_DIR_SEPARATOR (endp[-1]))
3227 nstore[endp - startp] = DIR_SEPARATOR;
3228 nstore[endp - startp + 1] = 0;
3231 nstore[endp - startp] = 0;
3232 add_prefix (&exec_prefixes, nstore, 0,
3233 PREFIX_PRIORITY_LAST, 0, NULL);
3234 add_prefix (&include_prefixes,
3235 concat (nstore, "include", NULL),
3236 0, PREFIX_PRIORITY_LAST, 0, NULL);
3239 endp = startp = endp + 1;
3246 GET_ENV_PATH_LIST (temp, LIBRARY_PATH_ENV);
3247 if (temp && *cross_compile == '0')
3249 const char *startp, *endp;
3250 char *nstore = (char *) alloca (strlen (temp) + 3);
3252 startp = endp = temp;
3255 if (*endp == PATH_SEPARATOR || *endp == 0)
3257 strncpy (nstore, startp, endp - startp);
3259 strcpy (nstore, concat (".", dir_separator_str, NULL));
3260 else if (!IS_DIR_SEPARATOR (endp[-1]))
3262 nstore[endp - startp] = DIR_SEPARATOR;
3263 nstore[endp - startp + 1] = 0;
3266 nstore[endp - startp] = 0;
3267 add_prefix (&startfile_prefixes, nstore, NULL,
3268 PREFIX_PRIORITY_LAST, 0, NULL);
3271 endp = startp = endp + 1;
3278 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3279 GET_ENV_PATH_LIST (temp, "LPATH");
3280 if (temp && *cross_compile == '0')
3282 const char *startp, *endp;
3283 char *nstore = (char *) alloca (strlen (temp) + 3);
3285 startp = endp = temp;
3288 if (*endp == PATH_SEPARATOR || *endp == 0)
3290 strncpy (nstore, startp, endp - startp);
3292 strcpy (nstore, concat (".", dir_separator_str, NULL));
3293 else if (!IS_DIR_SEPARATOR (endp[-1]))
3295 nstore[endp - startp] = DIR_SEPARATOR;
3296 nstore[endp - startp + 1] = 0;
3299 nstore[endp - startp] = 0;
3300 add_prefix (&startfile_prefixes, nstore, NULL,
3301 PREFIX_PRIORITY_LAST, 0, NULL);
3304 endp = startp = endp + 1;
3311 /* Convert new-style -- options to old-style. */
3312 translate_options (&argc, &argv);
3314 /* Do language-specific adjustment/addition of flags. */
3315 lang_specific_driver (&argc, &argv, &added_libraries);
3317 /* Scan argv twice. Here, the first time, just count how many switches
3318 there will be in their vector, and how many input files in theirs.
3319 Also parse any switches that determine the configuration name, such as -b.
3320 Here we also parse the switches that cc itself uses (e.g. -v). */
3322 for (i = 1; i < argc; i++)
3324 if (! strcmp (argv[i], "-dumpspecs"))
3326 struct spec_list *sl;
3328 for (sl = specs; sl; sl = sl->next)
3329 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3330 if (link_command_spec)
3331 printf ("*link_command:\n%s\n\n", link_command_spec);
3334 else if (! strcmp (argv[i], "-dumpversion"))
3336 printf ("%s\n", spec_version);
3339 else if (! strcmp (argv[i], "-dumpmachine"))
3341 printf ("%s\n", spec_machine);
3344 else if (strcmp (argv[i], "-fversion") == 0)
3346 /* translate_options () has turned --version into -fversion. */
3347 printf (_("%s (GCC) %s\n"), programname, version_string);
3348 fputs (_("Copyright (C) 2002 Free Software Foundation, Inc.\n"),
3350 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
3351 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
3355 else if (strcmp (argv[i], "-fhelp") == 0)
3357 /* translate_options () has turned --help into -fhelp. */
3358 print_help_list = 1;
3360 /* We will be passing a dummy file on to the sub-processes. */
3364 /* CPP driver cannot obtain switch from cc1_options. */
3366 add_preprocessor_option ("--help", 6);
3367 add_assembler_option ("--help", 6);
3368 add_linker_option ("--help", 6);
3370 else if (strcmp (argv[i], "-ftarget-help") == 0)
3372 /* translate_options() has turned --target-help into -ftarget-help. */
3373 target_help_flag = 1;
3375 /* We will be passing a dummy file on to the sub-processes. */
3379 /* CPP driver cannot obtain switch from cc1_options. */
3381 add_preprocessor_option ("--target-help", 13);
3382 add_assembler_option ("--target-help", 13);
3383 add_linker_option ("--target-help", 13);
3385 else if (! strcmp (argv[i], "-pass-exit-codes"))
3387 pass_exit_codes = 1;
3390 else if (! strcmp (argv[i], "-print-search-dirs"))
3391 print_search_dirs = 1;
3392 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3393 print_file_name = "libgcc.a";
3394 else if (! strncmp (argv[i], "-print-file-name=", 17))
3395 print_file_name = argv[i] + 17;
3396 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3397 print_prog_name = argv[i] + 17;
3398 else if (! strcmp (argv[i], "-print-multi-lib"))
3399 print_multi_lib = 1;
3400 else if (! strcmp (argv[i], "-print-multi-directory"))
3401 print_multi_directory = 1;
3402 else if (! strncmp (argv[i], "-Wa,", 4))
3405 /* Pass the rest of this option to the assembler. */
3407 /* Split the argument at commas. */
3409 for (j = 4; argv[i][j]; j++)
3410 if (argv[i][j] == ',')
3412 add_assembler_option (argv[i] + prev, j - prev);
3416 /* Record the part after the last comma. */
3417 add_assembler_option (argv[i] + prev, j - prev);
3419 else if (! strncmp (argv[i], "-Wp,", 4))
3422 /* Pass the rest of this option to the preprocessor. */
3424 /* Split the argument at commas. */
3426 for (j = 4; argv[i][j]; j++)
3427 if (argv[i][j] == ',')
3429 add_preprocessor_option (argv[i] + prev, j - prev);
3433 /* Record the part after the last comma. */
3434 add_preprocessor_option (argv[i] + prev, j - prev);
3436 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3437 /* The +e options to the C++ front-end. */
3439 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3442 /* Split the argument at commas. */
3443 for (j = 3; argv[i][j]; j++)
3444 n_infiles += (argv[i][j] == ',');
3446 else if (strcmp (argv[i], "-Xlinker") == 0)
3449 fatal ("argument to `-Xlinker' is missing");
3454 else if (strcmp (argv[i], "-l") == 0)
3457 fatal ("argument to `-l' is missing");
3462 else if (strncmp (argv[i], "-l", 2) == 0)
3464 else if (strcmp (argv[i], "-save-temps") == 0)
3466 save_temps_flag = 1;
3469 else if (strcmp (argv[i], "-specs") == 0)
3471 struct user_specs *user = (struct user_specs *)
3472 xmalloc (sizeof (struct user_specs));
3474 fatal ("argument to `-specs' is missing");
3476 user->next = (struct user_specs *) 0;
3477 user->filename = argv[i];
3478 if (user_specs_tail)
3479 user_specs_tail->next = user;
3481 user_specs_head = user;
3482 user_specs_tail = user;
3484 else if (strncmp (argv[i], "-specs=", 7) == 0)
3486 struct user_specs *user = (struct user_specs *)
3487 xmalloc (sizeof (struct user_specs));
3488 if (strlen (argv[i]) == 7)
3489 fatal ("argument to `-specs=' is missing");
3491 user->next = (struct user_specs *) 0;
3492 user->filename = argv[i] + 7;
3493 if (user_specs_tail)
3494 user_specs_tail->next = user;
3496 user_specs_head = user;
3497 user_specs_tail = user;
3499 else if (strcmp (argv[i], "-time") == 0)
3501 else if (strcmp (argv[i], "-###") == 0)
3503 /* This is similar to -v except that there is no execution
3504 of the commands and the echoed arguments are quoted. It
3505 is intended for use in shell scripts to capture the
3506 driver-generated command line. */
3507 verbose_only_flag++;
3510 else if (argv[i][0] == '-' && argv[i][1] != 0)
3512 const char *p = &argv[i][1];
3519 if (p[1] == 0 && i + 1 == argc)
3520 fatal ("argument to `-b' is missing");
3522 spec_machine = argv[++i];
3524 spec_machine = p + 1;
3526 warn_std_ptr = &warn_std;
3534 if (p[1] == 0 && i + 1 == argc)
3535 fatal ("argument to `-B' is missing");
3541 len = strlen (value);
3543 /* Catch the case where the user has forgotten to append a
3544 directory separator to the path. Note, they may be using
3545 -B to add an executable name prefix, eg "i386-elf-", in
3546 order to distinguish between multiple installations of
3547 GCC in the same directory. Hence we must check to see
3548 if appending a directory separator actually makes a
3549 valid directory name. */
3550 if (! IS_DIR_SEPARATOR (value [len - 1])
3551 && is_directory (value, "", 0))
3553 char *tmp = xmalloc (len + 2);
3554 strcpy (tmp, value);
3555 tmp[len] = DIR_SEPARATOR;
3560 /* As a kludge, if the arg is "[foo/]stageN/", just
3561 add "[foo/]include" to the include prefix. */
3564 && (IS_DIR_SEPARATOR (value[len - 8]))))
3565 && strncmp (value + len - 7, "stage", 5) == 0
3566 && ISDIGIT (value[len - 2])
3567 && (IS_DIR_SEPARATOR (value[len - 1])))
3570 add_prefix (&include_prefixes, "include", NULL,
3571 PREFIX_PRIORITY_B_OPT, 0, NULL);
3574 char * string = xmalloc (len + 1);
3576 strncpy (string, value, len - 7);
3577 strcpy (string + len - 7, "include");
3578 add_prefix (&include_prefixes, string, NULL,
3579 PREFIX_PRIORITY_B_OPT, 0, NULL);
3583 add_prefix (&exec_prefixes, value, NULL,
3584 PREFIX_PRIORITY_B_OPT, 0, &warn_B);
3585 add_prefix (&startfile_prefixes, value, NULL,
3586 PREFIX_PRIORITY_B_OPT, 0, &warn_B);
3587 add_prefix (&include_prefixes, concat (value, "include", NULL),
3588 NULL, PREFIX_PRIORITY_B_OPT, 0, NULL);
3593 case 'v': /* Print our subcommands and print versions. */
3595 /* If they do anything other than exactly `-v', don't set
3596 verbose_flag; rather, continue on to give the error. */
3604 if (p[1] == 0 && i + 1 == argc)
3605 fatal ("argument to `-V' is missing");
3607 spec_version = argv[++i];
3609 spec_version = p + 1;
3610 compiler_version = spec_version;
3611 warn_std_ptr = &warn_std;
3613 /* Validate the version number. Use the same checks
3614 done when inserting it into a spec.
3616 The format of the version string is
3617 ([^0-9]*-)?[0-9]+[.][0-9]+([.][0-9]+)?([- ].*)? */
3619 const char *v = compiler_version;
3621 /* Ignore leading non-digits. i.e. "foo-" in "foo-2.7.2". */
3622 while (! ISDIGIT (*v))
3625 if (v > compiler_version && v[-1] != '-')
3626 fatal ("invalid version number format");
3628 /* Set V after the first period. */
3629 while (ISDIGIT (*v))
3633 fatal ("invalid version number format");
3636 while (ISDIGIT (*v))
3639 if (*v != 0 && *v != ' ' && *v != '.' && *v != '-')
3640 fatal ("invalid version number format");
3656 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3661 /* Forward scan, just in case -S or -c is specified
3668 if (argv[j][0] == '-')
3670 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
3676 else if ((skip = SWITCH_TAKES_ARG (argv[j][1])))
3677 j += skip - (argv[j][2] != 0);
3678 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1)))
3685 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3687 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0);
3689 argv[i] = convert_filename (argv[i], ! have_c, 0);
3696 #ifdef MODIFY_TARGET_NAME
3697 is_modify_target_name = 0;
3699 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3700 if (! strcmp (argv[i], modify_target[j].sw))
3703 = (char *) xmalloc (strlen (modify_target[j].str)
3704 + strlen (spec_machine));
3707 int made_addition = 0;
3709 is_modify_target_name = 1;
3710 for (p = spec_machine, q = new_name; *p != 0; )
3712 if (modify_target[j].add_del == DELETE
3713 && (! strncmp (q, modify_target[j].str,
3714 strlen (modify_target[j].str))))
3715 p += strlen (modify_target[j].str);
3716 else if (modify_target[j].add_del == ADD
3717 && ! made_addition && *p == '-')
3719 for (r = modify_target[j].str; *r != 0; )
3727 spec_machine = new_name;
3730 if (is_modify_target_name)
3736 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
3737 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
3738 else if (WORD_SWITCH_TAKES_ARG (p))
3739 i += WORD_SWITCH_TAKES_ARG (p);
3749 if (have_c && have_o && lang_n_infiles > 1)
3750 fatal ("cannot specify -o with -c or -S and multiple compilations");
3752 /* Set up the search paths before we go looking for config files. */
3754 /* These come before the md prefixes so that we will find gcc's subcommands
3755 (such as cpp) rather than those of the host system. */
3756 /* Use 2 as fourth arg meaning try just the machine as a suffix,
3757 as well as trying the machine and the version. */
3759 add_prefix (&exec_prefixes, standard_exec_prefix, "GCC",
3760 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3761 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3762 PREFIX_PRIORITY_LAST, 2, warn_std_ptr);
3763 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS",
3764 PREFIX_PRIORITY_LAST, 2, warn_std_ptr);
3767 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3768 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3769 add_prefix (&startfile_prefixes, standard_exec_prefix_1, "BINUTILS",
3770 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3772 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3773 dir_separator_str, NULL);
3775 /* If tooldir is relative, base it on exec_prefixes. A relative
3776 tooldir lets us move the installed tree as a unit.
3778 If GCC_EXEC_PREFIX is defined, then we want to add two relative
3779 directories, so that we can search both the user specified directory
3780 and the standard place. */
3782 if (!IS_ABSOLUTE_PATHNAME (tooldir_prefix))
3784 if (gcc_exec_prefix)
3786 char *gcc_exec_tooldir_prefix
3787 = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
3788 spec_version, dir_separator_str, tooldir_prefix, NULL);
3790 add_prefix (&exec_prefixes,
3791 concat (gcc_exec_tooldir_prefix, "bin",
3792 dir_separator_str, NULL),
3793 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
3794 add_prefix (&startfile_prefixes,
3795 concat (gcc_exec_tooldir_prefix, "lib",
3796 dir_separator_str, NULL),
3797 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
3800 tooldir_prefix = concat (standard_exec_prefix, spec_machine,
3801 dir_separator_str, spec_version,
3802 dir_separator_str, tooldir_prefix, NULL);
3805 add_prefix (&exec_prefixes,
3806 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3807 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
3808 add_prefix (&startfile_prefixes,
3809 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3810 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
3812 /* More prefixes are enabled in main, after we read the specs file
3813 and determine whether this is cross-compilation or not. */
3815 /* Then create the space for the vectors and scan again. */
3817 switches = ((struct switchstr *)
3818 xmalloc ((n_switches + 1) * sizeof (struct switchstr)));
3819 infiles = (struct infile *) xmalloc ((n_infiles + 1) * sizeof (struct infile));
3822 last_language_n_infiles = -1;
3824 /* This, time, copy the text of each switch and store a pointer
3825 to the copy in the vector of switches.
3826 Store all the infiles in their vector. */
3828 for (i = 1; i < argc; i++)
3830 /* Just skip the switches that were handled by the preceding loop. */
3831 #ifdef MODIFY_TARGET_NAME
3832 is_modify_target_name = 0;
3834 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3835 if (! strcmp (argv[i], modify_target[j].sw))
3836 is_modify_target_name = 1;
3838 if (is_modify_target_name)
3842 if (! strncmp (argv[i], "-Wa,", 4))
3844 else if (! strncmp (argv[i], "-Wp,", 4))
3846 else if (! strcmp (argv[i], "-pass-exit-codes"))
3848 else if (! strcmp (argv[i], "-print-search-dirs"))
3850 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3852 else if (! strncmp (argv[i], "-print-file-name=", 17))
3854 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3856 else if (! strcmp (argv[i], "-print-multi-lib"))
3858 else if (! strcmp (argv[i], "-print-multi-directory"))
3860 else if (! strcmp (argv[i], "-ftarget-help"))
3862 else if (! strcmp (argv[i], "-fhelp"))
3864 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3866 /* Compensate for the +e options to the C++ front-end;
3867 they're there simply for cfront call-compatibility. We do
3868 some magic in default_compilers to pass them down properly.
3869 Note we deliberately start at the `+' here, to avoid passing
3870 -e0 or -e1 down into the linker. */
3871 switches[n_switches].part1 = &argv[i][0];
3872 switches[n_switches].args = 0;
3873 switches[n_switches].live_cond = SWITCH_OK;
3874 switches[n_switches].validated = 0;
3877 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3880 /* Split the argument at commas. */
3882 for (j = 4; argv[i][j]; j++)
3883 if (argv[i][j] == ',')
3885 infiles[n_infiles].language = "*";
3886 infiles[n_infiles++].name
3887 = save_string (argv[i] + prev, j - prev);
3890 /* Record the part after the last comma. */
3891 infiles[n_infiles].language = "*";
3892 infiles[n_infiles++].name = argv[i] + prev;
3894 else if (strcmp (argv[i], "-Xlinker") == 0)
3896 infiles[n_infiles].language = "*";
3897 infiles[n_infiles++].name = argv[++i];
3899 else if (strcmp (argv[i], "-l") == 0)
3900 { /* POSIX allows separation of -l and the lib arg;
3901 canonicalize by concatenating -l with its arg */
3902 infiles[n_infiles].language = "*";
3903 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL);
3905 else if (strncmp (argv[i], "-l", 2) == 0)
3907 infiles[n_infiles].language = "*";
3908 infiles[n_infiles++].name = argv[i];
3910 else if (strcmp (argv[i], "-specs") == 0)
3912 else if (strncmp (argv[i], "-specs=", 7) == 0)
3914 else if (strcmp (argv[i], "-time") == 0)
3916 else if ((save_temps_flag || report_times)
3917 && strcmp (argv[i], "-pipe") == 0)
3919 /* -save-temps overrides -pipe, so that temp files are produced */
3920 if (save_temps_flag)
3921 error ("warning: -pipe ignored because -save-temps specified");
3922 /* -time overrides -pipe because we can't get correct stats when
3923 multiple children are running at once. */
3924 else if (report_times)
3925 error ("warning: -pipe ignored because -time specified");
3927 else if (strcmp (argv[i], "-###") == 0)
3929 else if (argv[i][0] == '-' && argv[i][1] != 0)
3931 const char *p = &argv[i][1];
3936 if (p[1] == 0 && i + 1 == argc)
3937 fatal ("argument to `-x' is missing");
3939 spec_lang = argv[++i];
3942 if (! strcmp (spec_lang, "none"))
3943 /* Suppress the warning if -xnone comes after the last input
3944 file, because alternate command interfaces like g++ might
3945 find it useful to place -xnone after each input file. */
3948 last_language_n_infiles = n_infiles;
3951 switches[n_switches].part1 = p;
3952 /* Deal with option arguments in separate argv elements. */
3953 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
3954 || WORD_SWITCH_TAKES_ARG (p))
3957 int n_args = WORD_SWITCH_TAKES_ARG (p);
3961 /* Count only the option arguments in separate argv elements. */
3962 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
3964 if (i + n_args >= argc)
3965 fatal ("argument to `-%s' is missing", p);
3966 switches[n_switches].args
3967 = (const char **) xmalloc ((n_args + 1) * sizeof(const char *));
3969 switches[n_switches].args[j++] = argv[++i];
3970 /* Null-terminate the vector. */
3971 switches[n_switches].args[j] = 0;
3973 else if (strchr (switches_need_spaces, c))
3975 /* On some systems, ld cannot handle some options without
3976 a space. So split the option from its argument. */
3977 char *part1 = (char *) xmalloc (2);
3981 switches[n_switches].part1 = part1;
3982 switches[n_switches].args
3983 = (const char **) xmalloc (2 * sizeof (const char *));
3984 switches[n_switches].args[0] = xstrdup (p+1);
3985 switches[n_switches].args[1] = 0;
3988 switches[n_switches].args = 0;
3990 switches[n_switches].live_cond = SWITCH_OK;
3991 switches[n_switches].validated = 0;
3992 switches[n_switches].ordering = 0;
3993 /* These are always valid, since gcc.c itself understands it. */
3994 if (!strcmp (p, "save-temps")
3995 || !strcmp (p, "static-libgcc")
3996 || !strcmp (p, "shared-libgcc"))
3997 switches[n_switches].validated = 1;
4000 char ch = switches[n_switches].part1[0];
4001 if (ch == 'V' || ch == 'b' || ch == 'B')
4002 switches[n_switches].validated = 1;
4008 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4009 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
4012 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
4014 perror_with_name (argv[i]);
4019 infiles[n_infiles].language = spec_lang;
4020 infiles[n_infiles++].name = argv[i];
4025 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4026 error ("warning: `-x %s' after last input file has no effect", spec_lang);
4028 /* Ensure we only invoke each subprocess once. */
4029 if (target_help_flag || print_help_list)
4033 /* Create a dummy input file, so that we can pass --target-help on to
4034 the various sub-processes. */
4035 infiles[0].language = "c";
4036 infiles[0].name = "help-dummy";
4038 if (target_help_flag)
4040 switches[n_switches].part1 = "--target-help";
4041 switches[n_switches].args = 0;
4042 switches[n_switches].live_cond = SWITCH_OK;
4043 switches[n_switches].validated = 0;
4048 if (print_help_list)
4050 switches[n_switches].part1 = "--help";
4051 switches[n_switches].args = 0;
4052 switches[n_switches].live_cond = SWITCH_OK;
4053 switches[n_switches].validated = 0;
4059 switches[n_switches].part1 = 0;
4060 infiles[n_infiles].name = 0;
4063 /* Store switches not filtered out by %{<S} in spec in COLLECT_GCC_OPTIONS
4064 and place that in the environment. */
4067 set_collect_gcc_options ()
4072 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4074 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4075 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4078 for (i = 0; (int) i < n_switches; i++)
4080 const char *const *args;
4083 obstack_grow (&collect_obstack, " ", 1);
4087 /* Ignore elided switches. */
4088 if (switches[i].live_cond == SWITCH_IGNORE)
4091 obstack_grow (&collect_obstack, "'-", 2);
4092 q = switches[i].part1;
4093 while ((p = strchr (q, '\'')))
4095 obstack_grow (&collect_obstack, q, p - q);
4096 obstack_grow (&collect_obstack, "'\\''", 4);
4099 obstack_grow (&collect_obstack, q, strlen (q));
4100 obstack_grow (&collect_obstack, "'", 1);
4102 for (args = switches[i].args; args && *args; args++)
4104 obstack_grow (&collect_obstack, " '", 2);
4106 while ((p = strchr (q, '\'')))
4108 obstack_grow (&collect_obstack, q, p - q);
4109 obstack_grow (&collect_obstack, "'\\''", 4);
4112 obstack_grow (&collect_obstack, q, strlen (q));
4113 obstack_grow (&collect_obstack, "'", 1);
4116 obstack_grow (&collect_obstack, "\0", 1);
4117 putenv (obstack_finish (&collect_obstack));
4120 /* Process a spec string, accumulating and running commands. */
4122 /* These variables describe the input file name.
4123 input_file_number is the index on outfiles of this file,
4124 so that the output file name can be stored for later use by %o.
4125 input_basename is the start of the part of the input file
4126 sans all directory names, and basename_length is the number
4127 of characters starting there excluding the suffix .c or whatever. */
4129 const char *input_filename;
4130 static int input_file_number;
4131 size_t input_filename_length;
4132 static int basename_length;
4133 static int suffixed_basename_length;
4134 static const char *input_basename;
4135 static const char *input_suffix;
4136 static struct stat input_stat;
4137 static int input_stat_set;
4139 /* The compiler used to process the current input file. */
4140 static struct compiler *input_file_compiler;
4142 /* These are variables used within do_spec and do_spec_1. */
4144 /* Nonzero if an arg has been started and not yet terminated
4145 (with space, tab or newline). */
4146 static int arg_going;
4148 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4149 is a temporary file name. */
4150 static int delete_this_arg;
4152 /* Nonzero means %w has been seen; the next arg to be terminated
4153 is the output file name of this compilation. */
4154 static int this_is_output_file;
4156 /* Nonzero means %s has been seen; the next arg to be terminated
4157 is the name of a library file and we should try the standard
4158 search dirs for it. */
4159 static int this_is_library_file;
4161 /* Nonzero means that the input of this command is coming from a pipe. */
4162 static int input_from_pipe;
4164 /* Nonnull means substitute this for any suffix when outputting a switches
4166 static const char *suffix_subst;
4168 /* Process the spec SPEC and run the commands specified therein.
4169 Returns 0 if the spec is successfully processed; -1 if failed. */
4179 delete_this_arg = 0;
4180 this_is_output_file = 0;
4181 this_is_library_file = 0;
4182 input_from_pipe = 0;
4183 suffix_subst = NULL;
4185 value = do_spec_1 (spec, 0, NULL);
4187 /* Force out any unfinished command.
4188 If -pipe, this forces out the last command if it ended in `|'. */
4191 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4194 set_collect_gcc_options ();
4196 if (argbuf_index > 0)
4203 /* Process the sub-spec SPEC as a portion of a larger spec.
4204 This is like processing a whole spec except that we do
4205 not initialize at the beginning and we do not supply a
4206 newline by default at the end.
4207 INSWITCH nonzero means don't process %-sequences in SPEC;
4208 in this case, % is treated as an ordinary character.
4209 This is used while substituting switches.
4210 INSWITCH nonzero also causes SPC not to terminate an argument.
4212 Value is zero unless a line was finished
4213 and the command on that line reported an error. */
4216 do_spec_1 (spec, inswitch, soft_matched_part)
4219 const char *soft_matched_part;
4221 const char *p = spec;
4228 /* If substituting a switch, treat all chars like letters.
4229 Otherwise, NL, SPC, TAB and % are special. */
4230 switch (inswitch ? 'a' : c)
4233 /* End of line: finish any pending argument,
4234 then run the pending command if one has been started. */
4237 obstack_1grow (&obstack, 0);
4238 string = obstack_finish (&obstack);
4239 if (this_is_library_file)
4240 string = find_file (string);
4241 store_arg (string, delete_this_arg, this_is_output_file);
4242 if (this_is_output_file)
4243 outfiles[input_file_number] = string;
4247 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4249 for (i = 0; i < n_switches; i++)
4250 if (!strcmp (switches[i].part1, "pipe"))
4253 /* A `|' before the newline means use a pipe here,
4254 but only if -pipe was specified.
4255 Otherwise, execute now and don't pass the `|' as an arg. */
4258 input_from_pipe = 1;
4259 switches[i].validated = 1;
4266 set_collect_gcc_options ();
4268 if (argbuf_index > 0)
4274 /* Reinitialize for a new command, and for a new argument. */
4277 delete_this_arg = 0;
4278 this_is_output_file = 0;
4279 this_is_library_file = 0;
4280 input_from_pipe = 0;
4284 /* End any pending argument. */
4287 obstack_1grow (&obstack, 0);
4288 string = obstack_finish (&obstack);
4289 if (this_is_library_file)
4290 string = find_file (string);
4291 store_arg (string, delete_this_arg, this_is_output_file);
4292 if (this_is_output_file)
4293 outfiles[input_file_number] = string;
4297 obstack_1grow (&obstack, c);
4303 /* Space or tab ends an argument if one is pending. */
4306 obstack_1grow (&obstack, 0);
4307 string = obstack_finish (&obstack);
4308 if (this_is_library_file)
4309 string = find_file (string);
4310 store_arg (string, delete_this_arg, this_is_output_file);
4311 if (this_is_output_file)
4312 outfiles[input_file_number] = string;
4314 /* Reinitialize for a new argument. */
4316 delete_this_arg = 0;
4317 this_is_output_file = 0;
4318 this_is_library_file = 0;
4325 fatal ("invalid specification! Bug in cc");
4328 obstack_grow (&obstack, input_basename, basename_length);
4333 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4338 delete_this_arg = 2;
4341 /* Dump out the directories specified with LIBRARY_PATH,
4342 followed by the absolute directories
4343 that we search for startfiles. */
4346 struct prefix_list *pl = startfile_prefixes.plist;
4347 size_t bufsize = 100;
4348 char *buffer = (char *) xmalloc (bufsize);
4351 for (; pl; pl = pl->next)
4353 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4354 /* Used on systems which record the specified -L dirs
4355 and use them to search for dynamic linking. */
4356 /* Relative directories always come from -B,
4357 and it is better not to use them for searching
4358 at run time. In particular, stage1 loses. */
4359 if (!IS_ABSOLUTE_PATHNAME (pl->prefix))
4362 /* Try subdirectory if there is one. */
4363 if (multilib_dir != NULL)
4367 if (strlen (pl->prefix) + strlen (machine_suffix)
4369 bufsize = (strlen (pl->prefix)
4370 + strlen (machine_suffix)) * 2 + 1;
4371 buffer = (char *) xrealloc (buffer, bufsize);
4372 strcpy (buffer, pl->prefix);
4373 strcat (buffer, machine_suffix);
4374 if (is_directory (buffer, multilib_dir, 1))
4376 do_spec_1 ("-L", 0, NULL);
4377 #ifdef SPACE_AFTER_L_OPTION
4378 do_spec_1 (" ", 0, NULL);
4380 do_spec_1 (buffer, 1, NULL);
4381 do_spec_1 (multilib_dir, 1, NULL);
4382 /* Make this a separate argument. */
4383 do_spec_1 (" ", 0, NULL);
4386 if (!pl->require_machine_suffix)
4388 if (is_directory (pl->prefix, multilib_dir, 1))
4390 do_spec_1 ("-L", 0, NULL);
4391 #ifdef SPACE_AFTER_L_OPTION
4392 do_spec_1 (" ", 0, NULL);
4394 do_spec_1 (pl->prefix, 1, NULL);
4395 do_spec_1 (multilib_dir, 1, NULL);
4396 /* Make this a separate argument. */
4397 do_spec_1 (" ", 0, NULL);
4403 if (is_directory (pl->prefix, machine_suffix, 1))
4405 do_spec_1 ("-L", 0, NULL);
4406 #ifdef SPACE_AFTER_L_OPTION
4407 do_spec_1 (" ", 0, NULL);
4409 do_spec_1 (pl->prefix, 1, NULL);
4410 /* Remove slash from machine_suffix. */
4411 if (strlen (machine_suffix) >= bufsize)
4412 bufsize = strlen (machine_suffix) * 2 + 1;
4413 buffer = (char *) xrealloc (buffer, bufsize);
4414 strcpy (buffer, machine_suffix);
4415 idx = strlen (buffer);
4416 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4417 buffer[idx - 1] = 0;
4418 do_spec_1 (buffer, 1, NULL);
4419 /* Make this a separate argument. */
4420 do_spec_1 (" ", 0, NULL);
4423 if (!pl->require_machine_suffix)
4425 if (is_directory (pl->prefix, "", 1))
4427 do_spec_1 ("-L", 0, NULL);
4428 #ifdef SPACE_AFTER_L_OPTION
4429 do_spec_1 (" ", 0, NULL);
4431 /* Remove slash from pl->prefix. */
4432 if (strlen (pl->prefix) >= bufsize)
4433 bufsize = strlen (pl->prefix) * 2 + 1;
4434 buffer = (char *) xrealloc (buffer, bufsize);
4435 strcpy (buffer, pl->prefix);
4436 idx = strlen (buffer);
4437 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4438 buffer[idx - 1] = 0;
4439 do_spec_1 (buffer, 1, NULL);
4440 /* Make this a separate argument. */
4441 do_spec_1 (" ", 0, NULL);
4450 /* %efoo means report an error with `foo' as error message
4451 and don't execute any more commands for this file. */
4455 while (*p != 0 && *p != '\n')
4457 buf = (char *) alloca (p - q + 1);
4458 strncpy (buf, q, p - q);
4465 /* %nfoo means report an notice with `foo' on stderr. */
4469 while (*p != 0 && *p != '\n')
4471 buf = (char *) alloca (p - q + 1);
4472 strncpy (buf, q, p - q);
4474 notice ("%s\n", buf);
4484 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is defined,
4485 and it is not a directory, and it is writable, use it.
4486 Otherwise, fall through and treat this like any other
4489 if ((!save_temps_flag)
4490 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4491 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4493 obstack_grow (&obstack, HOST_BIT_BUCKET,
4494 strlen (HOST_BIT_BUCKET));
4495 delete_this_arg = 0;
4504 struct temp_name *t;
4506 const char *suffix = p;
4507 char *saved_suffix = NULL;
4509 while (*p == '.' || ISALPHA ((unsigned char) *p))
4511 suffix_length = p - suffix;
4512 if (p[0] == '%' && p[1] == 'O')
4515 /* We don't support extra suffix characters after %O. */
4516 if (*p == '.' || ISALPHA ((unsigned char) *p))
4518 if (suffix_length == 0)
4519 suffix = TARGET_OBJECT_SUFFIX;
4523 = (char *) xmalloc (suffix_length
4524 + strlen (TARGET_OBJECT_SUFFIX));
4525 strncpy (saved_suffix, suffix, suffix_length);
4526 strcpy (saved_suffix + suffix_length,
4527 TARGET_OBJECT_SUFFIX);
4529 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4532 /* If the input_filename has the same suffix specified
4533 for the %g, %u, or %U, and -save-temps is specified,
4534 we could end up using that file as an intermediate
4535 thus clobbering the user's source file (.e.g.,
4536 gcc -save-temps foo.s would clobber foo.s with the
4537 output of cpp0). So check for this condition and
4538 generate a temp file as the intermediate. */
4540 if (save_temps_flag)
4542 temp_filename_length = basename_length + suffix_length;
4543 temp_filename = alloca (temp_filename_length + 1);
4544 strncpy ((char *) temp_filename, input_basename, basename_length);
4545 strncpy ((char *) temp_filename + basename_length, suffix,
4547 *((char *) temp_filename + temp_filename_length) = '\0';
4548 if (strcmp (temp_filename, input_filename) != 0)
4550 struct stat st_temp;
4552 /* Note, set_input() resets input_stat_set to 0. */
4553 if (input_stat_set == 0)
4555 input_stat_set = stat (input_filename, &input_stat);
4556 if (input_stat_set >= 0)
4560 /* If we have the stat for the input_filename
4561 and we can do the stat for the temp_filename
4562 then the they could still refer to the same
4563 file if st_dev/st_ino's are the same. */
4565 if (input_stat_set != 1
4566 || stat (temp_filename, &st_temp) < 0
4567 || input_stat.st_dev != st_temp.st_dev
4568 || input_stat.st_ino != st_temp.st_ino)
4570 temp_filename = save_string (temp_filename,
4571 temp_filename_length + 1);
4572 obstack_grow (&obstack, temp_filename,
4573 temp_filename_length);
4580 /* See if we already have an association of %g/%u/%U and
4582 for (t = temp_names; t; t = t->next)
4583 if (t->length == suffix_length
4584 && strncmp (t->suffix, suffix, suffix_length) == 0
4585 && t->unique == (c != 'g'))
4588 /* Make a new association if needed. %u and %j
4590 if (t == 0 || c == 'u' || c == 'j')
4594 t = (struct temp_name *) xmalloc (sizeof (struct temp_name));
4595 t->next = temp_names;
4598 t->length = suffix_length;
4601 t->suffix = saved_suffix;
4602 saved_suffix = NULL;
4605 t->suffix = save_string (suffix, suffix_length);
4606 t->unique = (c != 'g');
4607 temp_filename = make_temp_file (t->suffix);
4608 temp_filename_length = strlen (temp_filename);
4609 t->filename = temp_filename;
4610 t->filename_length = temp_filename_length;
4614 free (saved_suffix);
4616 obstack_grow (&obstack, t->filename, t->filename_length);
4617 delete_this_arg = 1;
4623 obstack_grow (&obstack, input_filename, input_filename_length);
4629 struct prefix_list *pl = include_prefixes.plist;
4631 if (gcc_exec_prefix)
4633 do_spec_1 ("-iprefix", 1, NULL);
4634 /* Make this a separate argument. */
4635 do_spec_1 (" ", 0, NULL);
4636 do_spec_1 (gcc_exec_prefix, 1, NULL);
4637 do_spec_1 (" ", 0, NULL);
4640 for (; pl; pl = pl->next)
4642 do_spec_1 ("-isystem", 1, NULL);
4643 /* Make this a separate argument. */
4644 do_spec_1 (" ", 0, NULL);
4645 do_spec_1 (pl->prefix, 1, NULL);
4646 do_spec_1 (" ", 0, NULL);
4653 int max = n_infiles;
4654 max += lang_specific_extra_outfiles;
4656 for (i = 0; i < max; i++)
4658 store_arg (outfiles[i], 0, 0);
4663 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4668 this_is_library_file = 1;
4672 this_is_output_file = 1;
4677 int cur_index = argbuf_index;
4678 /* Handle the {...} following the %W. */
4681 p = handle_braces (p + 1);
4684 /* If any args were output, mark the last one for deletion
4686 if (argbuf_index != cur_index)
4687 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
4691 /* %x{OPTION} records OPTION for %X to output. */
4697 /* Skip past the option value and make a copy. */
4702 string = save_string (p1 + 1, p - p1 - 2);
4704 /* See if we already recorded this option. */
4705 for (i = 0; i < n_linker_options; i++)
4706 if (! strcmp (string, linker_options[i]))
4712 /* This option is new; add it. */
4713 add_linker_option (string, strlen (string));
4717 /* Dump out the options accumulated previously using %x. */
4719 for (i = 0; i < n_linker_options; i++)
4721 do_spec_1 (linker_options[i], 1, NULL);
4722 /* Make each accumulated option a separate argument. */
4723 do_spec_1 (" ", 0, NULL);
4727 /* Dump out the options accumulated previously using -Wa,. */
4729 for (i = 0; i < n_assembler_options; i++)
4731 do_spec_1 (assembler_options[i], 1, NULL);
4732 /* Make each accumulated option a separate argument. */
4733 do_spec_1 (" ", 0, NULL);
4737 /* Dump out the options accumulated previously using -Wp,. */
4739 for (i = 0; i < n_preprocessor_options; i++)
4741 do_spec_1 (preprocessor_options[i], 1, NULL);
4742 /* Make each accumulated option a separate argument. */
4743 do_spec_1 (" ", 0, NULL);
4747 /* Here are digits and numbers that just process
4748 a certain constant string as a spec. */
4751 value = do_spec_1 (cc1_spec, 0, NULL);
4757 value = do_spec_1 (cc1plus_spec, 0, NULL);
4763 value = do_spec_1 (link_gcc_c_sequence_spec, 0, NULL);
4769 value = do_spec_1 (asm_spec, 0, NULL);
4775 value = do_spec_1 (asm_final_spec, 0, NULL);
4782 const char *const spec
4783 = (input_file_compiler->cpp_spec
4784 ? input_file_compiler->cpp_spec
4786 value = do_spec_1 (spec, 0, NULL);
4793 value = do_spec_1 (endfile_spec, 0, NULL);
4799 value = do_spec_1 (link_spec, 0, NULL);
4805 value = do_spec_1 (lib_spec, 0, NULL);
4811 value = do_spec_1 (libgcc_spec, 0, NULL);
4817 if (multilib_dir && strcmp (multilib_dir, ".") != 0)
4823 len = strlen (multilib_dir);
4824 obstack_blank (&obstack, len + 1);
4825 p = obstack_next_free (&obstack) - (len + 1);
4828 for (q = multilib_dir; *q ; ++q, ++p)
4829 *p = (IS_DIR_SEPARATOR (*q) ? '_' : *q);
4835 char *x = (char *) alloca (strlen (cpp_predefines) + 1);
4839 /* Copy all of the -D options in CPP_PREDEFINES into BUF. */
4843 if (! strncmp (y, "-D", 2))
4844 /* Copy the whole option. */
4845 while (*y && *y != ' ' && *y != '\t')
4847 else if (*y == ' ' || *y == '\t')
4848 /* Copy whitespace to the result. */
4850 /* Don't copy other options. */
4857 value = do_spec_1 (buf, 0, NULL);
4865 char *x = (char *) alloca (strlen (cpp_predefines) * 4 + 1);
4869 /* Copy all of CPP_PREDEFINES into BUF,
4870 but force them all into the reserved name space if they
4871 aren't already there. The reserved name space is all
4872 identifiers beginning with two underscores or with one
4873 underscore and a capital letter. We do the forcing by
4874 adding up to two underscores to the beginning and end
4875 of each symbol. e.g. mips, _mips, mips_, and _mips_ all
4880 if (! strncmp (y, "-D", 2))
4889 && ! ISUPPER ((unsigned char) *(y + 1))))
4891 /* Stick __ at front of macro name. */
4895 /* Arrange to stick __ at the end as well. */
4899 /* Copy the macro name. */
4900 while (*y && *y != '=' && *y != ' ' && *y != '\t')
4913 /* Copy the value given, if any. */
4914 while (*y && *y != ' ' && *y != '\t')
4917 else if (*y == ' ' || *y == '\t')
4918 /* Copy whitespace to the result. */
4920 /* Don't copy -A options */
4926 /* Copy all of CPP_PREDEFINES into BUF,
4927 but put __ after every -D. */
4931 if (! strncmp (y, "-D", 2))
4937 && ! ISUPPER ((unsigned char) *(y + 1))))
4939 /* Stick -D__ at front of macro name. */
4946 /* Copy the macro name. */
4947 while (*y && *y != '=' && *y != ' ' && *y != '\t')
4950 /* Copy the value given, if any. */
4951 while (*y && *y != ' ' && *y != '\t')
4956 /* Do not copy this macro - we have just done it before */
4957 while (*y && *y != ' ' && *y != '\t')
4961 else if (*y == ' ' || *y == '\t')
4962 /* Copy whitespace to the result. */
4964 /* Don't copy -A options. */
4970 /* Copy all of the -A options in CPP_PREDEFINES into BUF. */
4974 if (! strncmp (y, "-A", 2))
4975 /* Copy the whole option. */
4976 while (*y && *y != ' ' && *y != '\t')
4978 else if (*y == ' ' || *y == '\t')
4979 /* Copy whitespace to the result. */
4981 /* Don't copy other options. */
4988 value = do_spec_1 (buf, 0, NULL);
4995 value = do_spec_1 (startfile_spec, 0, NULL);
5000 /* Here we define characters other than letters and digits. */
5003 p = handle_braces (p);
5009 obstack_1grow (&obstack, '%');
5016 while (p[len] && p[len] != ' ' && p[len] != '%')
5018 suffix_subst = save_string (p - 1, len + 1);
5024 if (soft_matched_part)
5026 do_spec_1 (soft_matched_part, 1, NULL);
5027 do_spec_1 (" ", 0, NULL);
5030 /* Catch the case where a spec string contains something like
5031 '%{foo:%*}'. ie there is no * in the pattern on the left
5032 hand side of the :. */
5033 error ("spec failure: '%%*' has not been initialized by pattern match");
5036 /* Process a string found as the value of a spec given by name.
5037 This feature allows individual machine descriptions
5038 to add and use their own specs.
5039 %[...] modifies -D options the way %P does;
5040 %(...) uses the spec unmodified. */
5042 error ("warning: use of obsolete %%[ operator in specs");
5045 const char *name = p;
5046 struct spec_list *sl;
5049 /* The string after the S/P is the name of a spec that is to be
5051 while (*p && *p != ')' && *p != ']')
5054 /* See if it's in the list. */
5055 for (len = p - name, sl = specs; sl; sl = sl->next)
5056 if (sl->name_len == len && !strncmp (sl->name, name, len))
5058 name = *(sl->ptr_spec);
5060 notice ("Processing spec %c%s%c, which is '%s'\n",
5061 c, sl->name, (c == '(') ? ')' : ']', name);
5070 value = do_spec_1 (name, 0, NULL);
5076 char *x = (char *) alloca (strlen (name) * 2 + 1);
5078 const char *y = name;
5081 /* Copy all of NAME into BUF, but put __ after
5082 every -D and at the end of each arg. */
5085 if (! strncmp (y, "-D", 2))
5096 && (*y == ' ' || *y == '\t' || *y == '='
5097 || *y == '}' || *y == 0))
5110 value = do_spec_1 (buf, 0, NULL);
5116 /* Discard the closing paren or bracket. */
5124 int c1 = *p++; /* Select first or second version number. */
5125 const char *v = compiler_version;
5127 static const char zeroc = '0';
5129 /* The format of the version string is
5130 ([^0-9]*-)?[0-9]+[.][0-9]+([.][0-9]+)?([- ].*)? */
5132 /* Ignore leading non-digits. i.e. "foo-" in "foo-2.7.2". */
5133 while (! ISDIGIT (*v))
5135 if (v > compiler_version && v[-1] != '-')
5138 /* If desired, advance to second version number. */
5141 /* Set V after the first period. */
5142 while (ISDIGIT (*v))
5149 /* If desired, advance to third version number.
5150 But don't complain if it's not present */
5153 /* Set V after the second period. */
5154 while (ISDIGIT (*v))
5156 if ((*v != 0) && (*v != ' ') && (*v != '.') && (*v != '-'))
5162 /* Set Q at the next period or at the end. */
5164 while (ISDIGIT (*q))
5166 if (*q != 0 && q > v && *q != ' ' && *q != '.' && *q != '-')
5170 /* Put that part into the command. */
5171 obstack_grow (&obstack, v, q - v);
5173 /* Default to "0" */
5174 obstack_grow (&obstack, &zeroc, 1);
5180 if (input_from_pipe)
5181 do_spec_1 ("-", 0, NULL);
5185 error ("spec failure: unrecognized spec option '%c'", c);
5191 /* Backslash: treat next character as ordinary. */
5196 /* Ordinary character: put it into the current argument. */
5197 obstack_1grow (&obstack, c);
5201 /* End of string. */
5205 /* Return 0 if we call do_spec_1 and that returns -1. */
5211 const char *filter, *body = NULL, *endbody = NULL;
5213 int true_once = 0; /* If, in %{a|b:d}, at least one of a,b was seen. */
5216 int include_blanks = 1;
5217 int elide_switch = 0;
5222 /* A '^' after the open-brace means to not give blanks before args. */
5229 /* A `|' after the open-brace means,
5230 if the test fails, output a single minus sign rather than nothing.
5231 This is used in %{|!pipe:...}. */
5238 /* A `<' after the open-brace means that the switch should be
5239 removed from the command-line. */
5245 negate = suffix = 0;
5248 /* A `!' after the open-brace negates the condition:
5249 succeed if the specified switch is not present. */
5253 /* A `.' after the open-brace means test against the current suffix. */
5262 if (elide_switch && (negate || pipe_p || suffix))
5264 /* It doesn't make sense to mix elision with other flags. We
5265 could fatal() here, but the standard seems to be to abort. */
5271 while (*p != ':' && *p != '}' && *p != '|' && *p != '&')
5274 if (*p == '|' && (pipe_p || ordered))
5279 if (*p != '}' && *p != '&')
5295 fatal ("mismatched braces in specs");
5301 body = p, endbody = p + 1;
5306 int found = (input_suffix != 0
5307 && (long) strlen (input_suffix) == (long) (p - filter)
5308 && strncmp (input_suffix, filter, p - filter) == 0);
5314 && do_spec_1 (save_string (body, endbody-body-1), 0, NULL) < 0)
5317 else if (p[-1] == '*' && (p[0] == '}' || p[0] == '&'))
5319 /* Substitute all matching switches as separate args. */
5322 for (i = 0; i < n_switches; i++)
5323 if (!strncmp (switches[i].part1, filter, p - 1 - filter)
5324 && check_live_switch (i, p - 1 - filter))
5328 switches[i].live_cond = SWITCH_IGNORE;
5329 switches[i].validated = 1;
5332 ordered = 1, switches[i].ordering = 1;
5337 /* Test for presence of the specified switch. */
5341 /* If name specified ends in *, as in {x*:...},
5342 check for %* and handle that case. */
5343 if (p[-1] == '*' && !negate)
5346 const char *r = body;
5348 /* First see whether we have %*. */
5352 if (*r == '%' && r[1] == '*')
5356 /* If we do, handle that case. */
5359 /* Substitute all matching switches as separate args.
5360 But do this by substituting for %*
5361 in the text that follows the colon. */
5363 unsigned hard_match_len = p - filter - 1;
5364 char *string = save_string (body, endbody - body - 1);
5366 for (i = 0; i < n_switches; i++)
5367 if (!strncmp (switches[i].part1, filter, hard_match_len)
5368 && check_live_switch (i, -1))
5370 do_spec_1 (string, 0, &switches[i].part1[hard_match_len]);
5371 /* Pass any arguments this switch has. */
5372 give_switch (i, 1, 1);
5373 suffix_subst = NULL;
5376 /* We didn't match. Try again. */
5383 /* If name specified ends in *, as in {x*:...},
5384 check for presence of any switch name starting with x. */
5387 for (i = 0; i < n_switches; i++)
5389 unsigned hard_match_len = p - filter - 1;
5391 if (!strncmp (switches[i].part1, filter, hard_match_len)
5392 && check_live_switch (i, hard_match_len))
5399 /* Otherwise, check for presence of exact name specified. */
5402 for (i = 0; i < n_switches; i++)
5404 if (!strncmp (switches[i].part1, filter, p - filter)
5405 && switches[i].part1[p - filter] == 0
5406 && check_live_switch (i, -1))
5414 /* If it is as desired (present for %{s...}, absent for %{!s...})
5415 then substitute either the switch or the specified
5416 conditional text. */
5417 if (present != negate)
5421 switches[i].live_cond = SWITCH_IGNORE;
5422 switches[i].validated = 1;
5424 else if (ordered || *p == '&')
5425 ordered = 1, switches[i].ordering = 1;
5427 give_switch (i, 0, include_blanks);
5429 /* Even if many alternatives are matched, only output once. */
5434 /* Here if a %{|...} conditional fails: output a minus sign,
5435 which means "standard output" or "standard input". */
5436 do_spec_1 ("-", 0, NULL);
5441 /* We didn't match; try again. */
5448 goto next_ampersand;
5454 /* Doing this set of switches later preserves their command-line
5455 ordering. This is needed for e.g. -U, -D and -A. */
5456 for (i = 0; i < n_switches; i++)
5457 if (switches[i].ordering == 1)
5459 switches[i].ordering = 0;
5460 give_switch (i, 0, include_blanks);
5463 /* Process the spec just once, regardless of match count. */
5466 if (do_spec_1 (save_string (body, endbody - body - 1),
5474 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5475 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5476 spec, or -1 if either exact match or %* is used.
5478 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5479 whose value does not begin with "no-" is obsoleted by the same value
5480 with the "no-", similarly for a switch with the "no-" prefix. */
5483 check_live_switch (switchnum, prefix_length)
5487 const char *name = switches[switchnum].part1;
5490 /* In the common case of {<at-most-one-letter>*}, a negating
5491 switch would always match, so ignore that case. We will just
5492 send the conflicting switches to the compiler phase. */
5493 if (prefix_length >= 0 && prefix_length <= 1)
5496 /* If we already processed this switch and determined if it was
5497 live or not, return our past determination. */
5498 if (switches[switchnum].live_cond != 0)
5499 return switches[switchnum].live_cond > 0;
5501 /* Now search for duplicate in a manner that depends on the name. */
5505 for (i = switchnum + 1; i < n_switches; i++)
5506 if (switches[i].part1[0] == 'O')
5508 switches[switchnum].validated = 1;
5509 switches[switchnum].live_cond = SWITCH_FALSE;
5514 case 'W': case 'f': case 'm':
5515 if (! strncmp (name + 1, "no-", 3))
5517 /* We have Xno-YYY, search for XYYY. */
5518 for (i = switchnum + 1; i < n_switches; i++)
5519 if (switches[i].part1[0] == name[0]
5520 && ! strcmp (&switches[i].part1[1], &name[4]))
5522 switches[switchnum].validated = 1;
5523 switches[switchnum].live_cond = SWITCH_FALSE;
5529 /* We have XYYY, search for Xno-YYY. */
5530 for (i = switchnum + 1; i < n_switches; i++)
5531 if (switches[i].part1[0] == name[0]
5532 && switches[i].part1[1] == 'n'
5533 && switches[i].part1[2] == 'o'
5534 && switches[i].part1[3] == '-'
5535 && !strcmp (&switches[i].part1[4], &name[1]))
5537 switches[switchnum].validated = 1;
5538 switches[switchnum].live_cond = SWITCH_FALSE;
5545 /* Otherwise the switch is live. */
5546 switches[switchnum].live_cond = SWITCH_LIVE;
5550 /* Pass a switch to the current accumulating command
5551 in the same form that we received it.
5552 SWITCHNUM identifies the switch; it is an index into
5553 the vector of switches gcc received, which is `switches'.
5554 This cannot fail since it never finishes a command line.
5556 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument.
5558 If INCLUDE_BLANKS is nonzero, then we include blanks before each argument
5562 give_switch (switchnum, omit_first_word, include_blanks)
5564 int omit_first_word;
5567 if (switches[switchnum].live_cond == SWITCH_IGNORE)
5570 if (!omit_first_word)
5572 do_spec_1 ("-", 0, NULL);
5573 do_spec_1 (switches[switchnum].part1, 1, NULL);
5576 if (switches[switchnum].args != 0)
5579 for (p = switches[switchnum].args; *p; p++)
5581 const char *arg = *p;
5584 do_spec_1 (" ", 0, NULL);
5587 unsigned length = strlen (arg);
5590 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5591 if (arg[length] == '.')
5593 ((char *)arg)[length] = 0;
5597 do_spec_1 (arg, 1, NULL);
5599 ((char *)arg)[length] = '.';
5600 do_spec_1 (suffix_subst, 1, NULL);
5603 do_spec_1 (arg, 1, NULL);
5607 do_spec_1 (" ", 0, NULL);
5608 switches[switchnum].validated = 1;
5611 /* Search for a file named NAME trying various prefixes including the
5612 user's -B prefix and some standard ones.
5613 Return the absolute file name found. If nothing is found, return NAME. */
5621 /* Try multilib_dir if it is defined. */
5622 if (multilib_dir != NULL)
5624 const char *const try = ACONCAT ((multilib_dir, dir_separator_str, name, NULL));
5626 newname = find_a_file (&startfile_prefixes, try, R_OK);
5628 /* If we don't find it in the multi library dir, then fall
5629 through and look for it in the normal places. */
5630 if (newname != NULL)
5634 newname = find_a_file (&startfile_prefixes, name, R_OK);
5635 return newname ? newname : name;
5638 /* Determine whether a directory exists. If LINKER, return 0 for
5639 certain fixed names not needed by the linker. If not LINKER, it is
5640 only important to return 0 if the host machine has a small ARG_MAX
5644 is_directory (path1, path2, linker)
5649 int len1 = strlen (path1);
5650 int len2 = strlen (path2);
5651 char *path = (char *) alloca (3 + len1 + len2);
5655 #ifndef SMALL_ARG_MAX
5660 /* Construct the path from the two parts. Ensure the string ends with "/.".
5661 The resulting path will be a directory even if the given path is a
5663 memcpy (path, path1, len1);
5664 memcpy (path + len1, path2, len2);
5665 cp = path + len1 + len2;
5666 if (!IS_DIR_SEPARATOR (cp[-1]))
5667 *cp++ = DIR_SEPARATOR;
5671 /* Exclude directories that the linker is known to search. */
5674 && strcmp (path, concat (dir_separator_str, "lib",
5675 dir_separator_str, ".", NULL)) == 0)
5677 && strcmp (path, concat (dir_separator_str, "usr",
5678 dir_separator_str, "lib",
5679 dir_separator_str, ".", NULL)) == 0)))
5682 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5685 /* Set up the various global variables to indicate that we're processing
5686 the input file named FILENAME. */
5689 set_input (filename)
5690 const char *filename;
5694 input_filename = filename;
5695 input_filename_length = strlen (input_filename);
5697 input_basename = input_filename;
5698 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
5699 /* Skip drive name so 'x:foo' is handled properly. */
5700 if (input_basename[1] == ':')
5701 input_basename += 2;
5703 for (p = input_basename; *p; p++)
5704 if (IS_DIR_SEPARATOR (*p))
5705 input_basename = p + 1;
5707 /* Find a suffix starting with the last period,
5708 and set basename_length to exclude that suffix. */
5709 basename_length = strlen (input_basename);
5710 suffixed_basename_length = basename_length;
5711 p = input_basename + basename_length;
5712 while (p != input_basename && *p != '.')
5714 if (*p == '.' && p != input_basename)
5716 basename_length = p - input_basename;
5717 input_suffix = p + 1;
5722 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5723 we will need to do a stat on the input_filename. The
5724 INPUT_STAT_SET signals that the stat is needed. */
5728 /* On fatal signals, delete all the temporary files. */
5731 fatal_error (signum)
5734 signal (signum, SIG_DFL);
5735 delete_failure_queue ();
5736 delete_temp_files ();
5737 /* Get the same signal again, this time not handled,
5738 so its normal effect occurs. */
5739 kill (getpid (), signum);
5742 extern int main PARAMS ((int, const char *const *));
5747 const char *const *argv;
5751 int linker_was_run = 0;
5752 char *explicit_link_files;
5755 struct user_specs *uptr;
5757 p = argv[0] + strlen (argv[0]);
5758 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
5762 xmalloc_set_program_name (programname);
5764 #ifdef GCC_DRIVER_HOST_INITIALIZATION
5765 /* Perform host dependent initialization when needed. */
5766 GCC_DRIVER_HOST_INITIALIZATION;
5769 gcc_init_libintl ();
5771 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
5772 signal (SIGINT, fatal_error);
5774 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
5775 signal (SIGHUP, fatal_error);
5777 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
5778 signal (SIGTERM, fatal_error);
5780 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
5781 signal (SIGPIPE, fatal_error);
5784 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
5785 receive the signal. A different setting is inheritable */
5786 signal (SIGCHLD, SIG_DFL);
5790 argbuf = (const char **) xmalloc (argbuf_length * sizeof (const char *));
5792 obstack_init (&obstack);
5794 /* Build multilib_select, et. al from the separate lines that make up each
5795 multilib selection. */
5797 const char *const *q = multilib_raw;
5800 obstack_init (&multilib_obstack);
5801 while ((p = *q++) != (char *) 0)
5802 obstack_grow (&multilib_obstack, p, strlen (p));
5804 obstack_1grow (&multilib_obstack, 0);
5805 multilib_select = obstack_finish (&multilib_obstack);
5807 q = multilib_matches_raw;
5808 while ((p = *q++) != (char *) 0)
5809 obstack_grow (&multilib_obstack, p, strlen (p));
5811 obstack_1grow (&multilib_obstack, 0);
5812 multilib_matches = obstack_finish (&multilib_obstack);
5814 q = multilib_exclusions_raw;
5815 while ((p = *q++) != (char *) 0)
5816 obstack_grow (&multilib_obstack, p, strlen (p));
5818 obstack_1grow (&multilib_obstack, 0);
5819 multilib_exclusions = obstack_finish (&multilib_obstack);
5822 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
5825 obstack_1grow (&multilib_obstack, ' ');
5826 obstack_grow (&multilib_obstack,
5827 multilib_defaults_raw[i],
5828 strlen (multilib_defaults_raw[i]));
5832 obstack_1grow (&multilib_obstack, 0);
5833 multilib_defaults = obstack_finish (&multilib_obstack);
5836 /* Set up to remember the pathname of gcc and any options
5837 needed for collect. We use argv[0] instead of programname because
5838 we need the complete pathname. */
5839 obstack_init (&collect_obstack);
5840 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
5841 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
5842 putenv (obstack_finish (&collect_obstack));
5844 #ifdef INIT_ENVIRONMENT
5845 /* Set up any other necessary machine specific environment variables. */
5846 putenv (INIT_ENVIRONMENT);
5849 /* Make a table of what switches there are (switches, n_switches).
5850 Make a table of specified input files (infiles, n_infiles).
5851 Decode switches that are handled locally. */
5853 process_command (argc, argv);
5855 /* Initialize the vector of specs to just the default.
5856 This means one element containing 0s, as a terminator. */
5858 compilers = (struct compiler *) xmalloc (sizeof default_compilers);
5859 memcpy ((char *) compilers, (char *) default_compilers,
5860 sizeof default_compilers);
5861 n_compilers = n_default_compilers;
5863 /* Read specs from a file if there is one. */
5865 machine_suffix = concat (spec_machine, dir_separator_str,
5866 spec_version, dir_separator_str, NULL);
5867 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
5869 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK);
5870 /* Read the specs file unless it is a default one. */
5871 if (specs_file != 0 && strcmp (specs_file, "specs"))
5872 read_specs (specs_file, TRUE);
5876 /* We need to check standard_exec_prefix/just_machine_suffix/specs
5877 for any override of as, ld and libraries. */
5878 specs_file = (char *) alloca (strlen (standard_exec_prefix)
5879 + strlen (just_machine_suffix)
5880 + sizeof ("specs"));
5882 strcpy (specs_file, standard_exec_prefix);
5883 strcat (specs_file, just_machine_suffix);
5884 strcat (specs_file, "specs");
5885 if (access (specs_file, R_OK) == 0)
5886 read_specs (specs_file, TRUE);
5888 /* If not cross-compiling, look for startfiles in the standard places. */
5889 if (*cross_compile == '0')
5891 if (*md_exec_prefix)
5893 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
5894 PREFIX_PRIORITY_LAST, 0, NULL);
5895 add_prefix (&startfile_prefixes, md_exec_prefix, "GCC",
5896 PREFIX_PRIORITY_LAST, 0, NULL);
5899 if (*md_startfile_prefix)
5900 add_prefix (&startfile_prefixes, md_startfile_prefix, "GCC",
5901 PREFIX_PRIORITY_LAST, 0, NULL);
5903 if (*md_startfile_prefix_1)
5904 add_prefix (&startfile_prefixes, md_startfile_prefix_1, "GCC",
5905 PREFIX_PRIORITY_LAST, 0, NULL);
5907 /* If standard_startfile_prefix is relative, base it on
5908 standard_exec_prefix. This lets us move the installed tree
5909 as a unit. If GCC_EXEC_PREFIX is defined, base
5910 standard_startfile_prefix on that as well. */
5911 if (IS_ABSOLUTE_PATHNAME (standard_startfile_prefix))
5912 add_prefix (&startfile_prefixes, standard_startfile_prefix, "BINUTILS",
5913 PREFIX_PRIORITY_LAST, 0, NULL);
5916 if (gcc_exec_prefix)
5917 add_prefix (&startfile_prefixes,
5918 concat (gcc_exec_prefix, machine_suffix,
5919 standard_startfile_prefix, NULL),
5920 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
5921 add_prefix (&startfile_prefixes,
5922 concat (standard_exec_prefix,
5924 standard_startfile_prefix, NULL),
5925 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
5928 add_prefix (&startfile_prefixes, standard_startfile_prefix_1,
5929 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
5930 add_prefix (&startfile_prefixes, standard_startfile_prefix_2,
5931 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
5932 #if 0 /* Can cause surprises, and one can use -B./ instead. */
5933 add_prefix (&startfile_prefixes, "./", NULL,
5934 PREFIX_PRIORITY_LAST, 1, NULL);
5939 if (!IS_ABSOLUTE_PATHNAME (standard_startfile_prefix)
5941 add_prefix (&startfile_prefixes,
5942 concat (gcc_exec_prefix, machine_suffix,
5943 standard_startfile_prefix, NULL),
5944 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
5947 /* Process any user specified specs in the order given on the command
5949 for (uptr = user_specs_head; uptr; uptr = uptr->next)
5951 char *filename = find_a_file (&startfile_prefixes, uptr->filename, R_OK);
5952 read_specs (filename ? filename : uptr->filename, FALSE);
5955 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
5956 if (gcc_exec_prefix)
5957 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
5958 spec_version, dir_separator_str, NULL);
5960 /* Now we have the specs.
5961 Set the `valid' bits for switches that match anything in any spec. */
5963 validate_all_switches ();
5965 /* Now that we have the switches and the specs, set
5966 the subdirectory based on the options. */
5967 set_multilib_dir ();
5969 /* Warn about any switches that no pass was interested in. */
5971 for (i = 0; (int) i < n_switches; i++)
5972 if (! switches[i].validated)
5973 error ("unrecognized option `-%s'", switches[i].part1);
5975 /* Obey some of the options. */
5977 if (print_search_dirs)
5979 printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix);
5980 printf (_("programs: %s\n"), build_search_list (&exec_prefixes, "", 0));
5981 printf (_("libraries: %s\n"), build_search_list (&startfile_prefixes, "", 0));
5985 if (print_file_name)
5987 printf ("%s\n", find_file (print_file_name));
5991 if (print_prog_name)
5993 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK);
5994 printf ("%s\n", (newname ? newname : print_prog_name));
5998 if (print_multi_lib)
6000 print_multilib_info ();
6004 if (print_multi_directory)
6006 if (multilib_dir == NULL)
6009 printf ("%s\n", multilib_dir);
6013 if (target_help_flag)
6015 /* Print if any target specific options. */
6017 /* We do not exit here. Instead we have created a fake input file
6018 called 'target-dummy' which needs to be compiled, and we pass this
6019 on to the various sub-processes, along with the --target-help
6023 if (print_help_list)
6029 printf (_("\nFor bug reporting instructions, please see:\n"));
6030 printf ("%s.\n", GCCBUGURL);
6035 /* We do not exit here. Instead we have created a fake input file
6036 called 'help-dummy' which needs to be compiled, and we pass this
6037 on the various sub-processes, along with the --help switch. */
6045 notice ("Configured with: %s\n", configuration_arguments);
6047 #ifdef THREAD_MODEL_SPEC
6048 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6049 but there's no point in doing all this processing just to get
6050 thread_model back. */
6051 obstack_init (&obstack);
6052 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6053 obstack_1grow (&obstack, '\0');
6054 thrmod = obstack_finish (&obstack);
6056 thrmod = thread_model;
6059 notice ("Thread model: %s\n", thrmod);
6061 /* compiler_version is truncated at the first space when initialized
6062 from version string, so truncate version_string at the first space
6063 before comparing. */
6064 for (n = 0; version_string[n]; n++)
6065 if (version_string[n] == ' ')
6068 if (! strncmp (version_string, compiler_version, n)
6069 && compiler_version[n] == 0)
6070 notice ("gcc version %s\n", version_string);
6072 notice ("gcc driver version %s executing gcc version %s\n",
6073 version_string, compiler_version);
6079 if (n_infiles == added_libraries)
6080 fatal ("no input files");
6082 /* Make a place to record the compiler output file names
6083 that correspond to the input files. */
6086 i += lang_specific_extra_outfiles;
6087 outfiles = (const char **) xcalloc (i, sizeof (char *));
6089 /* Record which files were specified explicitly as link input. */
6091 explicit_link_files = xcalloc (1, n_infiles);
6093 for (i = 0; (int) i < n_infiles; i++)
6095 int this_file_error = 0;
6097 /* Tell do_spec what to substitute for %i. */
6099 input_file_number = i;
6100 set_input (infiles[i].name);
6102 /* Use the same thing in %o, unless cp->spec says otherwise. */
6104 outfiles[i] = input_filename;
6106 /* Figure out which compiler from the file's suffix. */
6109 = lookup_compiler (infiles[i].name, input_filename_length,
6110 infiles[i].language);
6112 if (input_file_compiler)
6114 /* Ok, we found an applicable compiler. Run its spec. */
6116 if (input_file_compiler->spec[0] == '#')
6118 error ("%s: %s compiler not installed on this system",
6119 input_filename, &input_file_compiler->spec[1]);
6120 this_file_error = 1;
6124 value = do_spec (input_file_compiler->spec);
6126 this_file_error = 1;
6130 /* If this file's name does not contain a recognized suffix,
6131 record it as explicit linker input. */
6134 explicit_link_files[i] = 1;
6136 /* Clear the delete-on-failure queue, deleting the files in it
6137 if this compilation failed. */
6139 if (this_file_error)
6141 delete_failure_queue ();
6144 /* If this compilation succeeded, don't delete those files later. */
6145 clear_failure_queue ();
6148 /* Reset the output file name to the first input file name, for use
6149 with %b in LINK_SPEC on a target that prefers not to emit a.out
6152 set_input (infiles[0].name);
6154 if (error_count == 0)
6156 /* Make sure INPUT_FILE_NUMBER points to first available open
6158 input_file_number = n_infiles;
6159 if (lang_specific_pre_link ())
6163 /* Run ld to link all the compiler output files. */
6165 if (error_count == 0)
6167 int tmp = execution_count;
6169 /* We'll use ld if we can't find collect2. */
6170 if (! strcmp (linker_name_spec, "collect2"))
6172 char *s = find_a_file (&exec_prefixes, "collect2", X_OK);
6174 linker_name_spec = "ld";
6176 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6178 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH");
6179 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV);
6181 value = do_spec (link_command_spec);
6184 linker_was_run = (tmp != execution_count);
6187 /* If options said don't run linker,
6188 complain about input files to be given to the linker. */
6190 if (! linker_was_run && error_count == 0)
6191 for (i = 0; (int) i < n_infiles; i++)
6192 if (explicit_link_files[i])
6193 error ("%s: linker input file unused because linking not done",
6196 /* Delete some or all of the temporary files we made. */
6199 delete_failure_queue ();
6200 delete_temp_files ();
6202 if (print_help_list)
6204 printf (("\nFor bug reporting instructions, please see:\n"));
6205 printf ("%s\n", GCCBUGURL);
6208 return (signal_count != 0 ? 2
6209 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
6213 /* Find the proper compilation spec for the file name NAME,
6214 whose length is LENGTH. LANGUAGE is the specified language,
6215 or 0 if this file is to be passed to the linker. */
6217 static struct compiler *
6218 lookup_compiler (name, length, language)
6221 const char *language;
6223 struct compiler *cp;
6225 /* If this was specified by the user to be a linker input, indicate that. */
6226 if (language != 0 && language[0] == '*')
6229 /* Otherwise, look for the language, if one is spec'd. */
6232 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6233 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6236 error ("language %s not recognized", language);
6240 /* Look for a suffix. */
6241 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6243 if (/* The suffix `-' matches only the file name `-'. */
6244 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6245 || (strlen (cp->suffix) < length
6246 /* See if the suffix matches the end of NAME. */
6247 && !strcmp (cp->suffix,
6248 name + length - strlen (cp->suffix))
6253 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6254 /* look again, but case-insensitively this time. */
6256 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6258 if (/* The suffix `-' matches only the file name `-'. */
6259 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6260 || (strlen (cp->suffix) < length
6261 /* See if the suffix matches the end of NAME. */
6262 && ((!strcmp (cp->suffix,
6263 name + length - strlen (cp->suffix))
6264 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6265 && !strcasecmp (cp->suffix,
6266 name + length - strlen (cp->suffix)))
6272 if (cp >= compilers)
6274 if (cp->spec[0] != '@')
6275 /* A non-alias entry: return it. */
6278 /* An alias entry maps a suffix to a language.
6279 Search for the language; pass 0 for NAME and LENGTH
6280 to avoid infinite recursion if language not found. */
6281 return lookup_compiler (NULL, 0, cp->spec + 1);
6287 save_string (s, len)
6291 char *result = xmalloc (len + 1);
6293 memcpy (result, s, len);
6299 pfatal_with_name (name)
6302 perror_with_name (name);
6303 delete_temp_files ();
6308 perror_with_name (name)
6311 error ("%s: %s", name, xstrerror (errno));
6315 pfatal_pexecute (errmsg_fmt, errmsg_arg)
6316 const char *errmsg_fmt;
6317 const char *errmsg_arg;
6321 int save_errno = errno;
6323 /* Space for trailing '\0' is in %s. */
6324 char *msg = xmalloc (strlen (errmsg_fmt) + strlen (errmsg_arg));
6325 sprintf (msg, errmsg_fmt, errmsg_arg);
6331 pfatal_with_name (errmsg_fmt);
6334 /* Output an error message and exit */
6339 fatal ("internal gcc abort");
6342 /* Output an error message and exit */
6345 fatal VPARAMS ((const char *msgid, ...))
6347 VA_OPEN (ap, msgid);
6348 VA_FIXEDARG (ap, const char *, msgid);
6350 fprintf (stderr, "%s: ", programname);
6351 vfprintf (stderr, _(msgid), ap);
6353 fprintf (stderr, "\n");
6354 delete_temp_files ();
6359 error VPARAMS ((const char *msgid, ...))
6361 VA_OPEN (ap, msgid);
6362 VA_FIXEDARG (ap, const char *, msgid);
6364 fprintf (stderr, "%s: ", programname);
6365 vfprintf (stderr, _(msgid), ap);
6368 fprintf (stderr, "\n");
6372 notice VPARAMS ((const char *msgid, ...))
6374 VA_OPEN (ap, msgid);
6375 VA_FIXEDARG (ap, const char *, msgid);
6377 vfprintf (stderr, _(msgid), ap);
6382 validate_all_switches ()
6384 struct compiler *comp;
6387 struct spec_list *spec;
6389 for (comp = compilers; comp->spec; comp++)
6393 if (c == '%' && (*p == '{' || (*p == 'W' && *++p == '{')))
6394 /* We have a switch spec. */
6395 validate_switches (p + 1);
6398 /* Look through the linked list of specs read from the specs file. */
6399 for (spec = specs; spec; spec = spec->next)
6401 p = *(spec->ptr_spec);
6403 if (c == '%' && (*p == '{' || (*p == 'W' && *++p == '{')))
6404 /* We have a switch spec. */
6405 validate_switches (p + 1);
6408 p = link_command_spec;
6410 if (c == '%' && (*p == '{' || (*p == 'W' && *++p == '{')))
6411 /* We have a switch spec. */
6412 validate_switches (p + 1);
6415 /* Look at the switch-name that comes after START
6416 and mark as valid all supplied switches that match it. */
6419 validate_switches (start)
6422 const char *p = start;
6439 while (*p != ':' && *p != '}' && *p != '|' && *p != '&')
6444 else if (p[-1] == '*')
6446 /* Mark all matching switches as valid. */
6447 for (i = 0; i < n_switches; i++)
6448 if (!strncmp (switches[i].part1, filter, p - filter - 1))
6449 switches[i].validated = 1;
6453 /* Mark an exact matching switch as valid. */
6454 for (i = 0; i < n_switches; i++)
6456 if (!strncmp (switches[i].part1, filter, p - filter)
6457 && switches[i].part1[p - filter] == 0)
6458 switches[i].validated = 1;
6462 if (*p++ == '|' || p[-1] == '&')
6466 /* Check whether a particular argument was used. The first time we
6467 canonicalize the switches to keep only the ones we care about. */
6477 const char *replace;
6482 static struct mswitchstr *mswitches;
6483 static int n_mswitches;
6488 struct mswitchstr *matches;
6492 /* Break multilib_matches into the component strings of string
6493 and replacement string. */
6494 for (q = multilib_matches; *q != '\0'; q++)
6499 (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
6501 q = multilib_matches;
6511 matches[i].len = q - matches[i].str;
6513 matches[i].replace = ++q;
6514 while (*q != ';' && *q != '\0')
6520 matches[i].rep_len = q - matches[i].replace;
6526 /* Now build a list of the replacement string for switches that we care
6527 about. Make sure we allocate at least one entry. This prevents
6528 xmalloc from calling fatal, and prevents us from re-executing this
6531 = (struct mswitchstr *) xmalloc ((sizeof (struct mswitchstr))
6532 * (n_switches ? n_switches : 1));
6533 for (i = 0; i < n_switches; i++)
6535 int xlen = strlen (switches[i].part1);
6536 for (j = 0; j < cnt; j++)
6537 if (xlen == matches[j].len
6538 && ! strncmp (switches[i].part1, matches[j].str, xlen))
6540 mswitches[n_mswitches].str = matches[j].replace;
6541 mswitches[n_mswitches].len = matches[j].rep_len;
6542 mswitches[n_mswitches].replace = (char *) 0;
6543 mswitches[n_mswitches].rep_len = 0;
6550 for (i = 0; i < n_mswitches; i++)
6551 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
6558 default_arg (p, len)
6562 const char *start, *end;
6564 for (start = multilib_defaults; *start != '\0'; start = end + 1)
6566 while (*start == ' ' || *start == '\t')
6572 for (end = start + 1; *end != ' ' && *end != '\t' && *end != '\0'; end++)
6575 if ((end - start) == len && strncmp (p, start, len) == 0)
6585 /* Work out the subdirectory to use based on the options. The format of
6586 multilib_select is a list of elements. Each element is a subdirectory
6587 name followed by a list of options followed by a semicolon. The format
6588 of multilib_exclusions is the same, but without the preceding
6589 directory. First gcc will check the exclusions, if none of the options
6590 beginning with an exclamation point are present, and all of the other
6591 options are present, then we will ignore this completely. Passing
6592 that, gcc will consider each multilib_select in turn using the same
6593 rules for matching the options. If a match is found, that subdirectory
6600 unsigned int this_path_len;
6601 const char *this_path, *this_arg;
6605 p = multilib_exclusions;
6608 /* Ignore newlines. */
6615 /* Check the arguments. */
6629 while (*p != ' ' && *p != ';')
6636 if (*this_arg != '!')
6644 ok = used_arg (this_arg, p - this_arg);
6658 p = multilib_select;
6661 /* Ignore newlines. */
6668 /* Get the initial path. */
6676 this_path_len = p - this_path;
6678 /* Check the arguments. */
6693 while (*p != ' ' && *p != ';')
6700 if (*this_arg != '!')
6708 /* If this is a default argument, we can just ignore it.
6709 This is true even if this_arg begins with '!'. Beginning
6710 with '!' does not mean that this argument is necessarily
6711 inappropriate for this library: it merely means that
6712 there is a more specific library which uses this
6713 argument. If this argument is a default, we need not
6714 consider that more specific library. */
6715 if (! default_arg (this_arg, p - this_arg))
6717 ok = used_arg (this_arg, p - this_arg);
6728 if (this_path_len != 1
6729 || this_path[0] != '.')
6731 char *new_multilib_dir = xmalloc (this_path_len + 1);
6732 strncpy (new_multilib_dir, this_path, this_path_len);
6733 new_multilib_dir[this_path_len] = '\0';
6734 multilib_dir = new_multilib_dir;
6743 /* Print out the multiple library subdirectory selection
6744 information. This prints out a series of lines. Each line looks
6745 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
6746 required. Only the desired options are printed out, the negative
6747 matches. The options are print without a leading dash. There are
6748 no spaces to make it easy to use the information in the shell.
6749 Each subdirectory is printed only once. This assumes the ordering
6750 generated by the genmultilib script. Also, we leave out ones that match
6754 print_multilib_info ()
6756 const char *p = multilib_select;
6757 const char *last_path = 0, *this_path;
6759 unsigned int last_path_len = 0;
6764 /* Ignore newlines. */
6771 /* Get the initial path. */
6780 /* Check for matches with the multilib_exclusions. We don't bother
6781 with the '!' in either list. If any of the exclusion rules match
6782 all of its options with the select rule, we skip it. */
6784 const char *e = multilib_exclusions;
6785 const char *this_arg;
6790 /* Ignore newlines. */
6797 /* Check the arguments. */
6814 while (*e != ' ' && *e != ';')
6825 int len = e - this_arg;
6832 while (*q != ' ' && *q != ';')
6839 if (! strncmp (arg, this_arg, (len < q - arg) ? q - arg : len) ||
6840 default_arg (this_arg, e - this_arg))
6870 /* If this is a duplicate, skip it. */
6871 skip = (last_path != 0 && (unsigned int) (p - this_path) == last_path_len
6872 && ! strncmp (last_path, this_path, last_path_len));
6874 last_path = this_path;
6875 last_path_len = p - this_path;
6878 /* If this directory requires any default arguments, we can skip
6879 it. We will already have printed a directory identical to
6880 this one which does not require that default argument. */
6898 while (*q != ' ' && *q != ';')
6906 && default_arg (arg, q - arg))
6921 for (p1 = last_path; p1 < p; p1++)
6940 use_arg = *p != '!';
6945 while (*p != ' ' && *p != ';')
6960 /* If there are extra options, print them now. */
6961 if (multilib_extra && *multilib_extra)
6963 int print_at = TRUE;
6966 for (q = multilib_extra; *q != '\0'; q++)