1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
22 This paragraph is here to try to keep Sun CC from dying.
23 The number of chars here seems crucial!!!! */
25 /* This program is the user interface to the C compiler and possibly to
26 other compilers. It is used because compilation is a complicated procedure
27 which involves running several programs and passing temporary files between
28 them, forwarding the users switches to those programs selectively,
29 and deleting the temporary files at the end.
31 CC recognizes how to compile each input file by suffixes in the file names.
32 Once it knows which kind of compilation to perform, the procedure for
33 compilation is specified by a string called a "spec". */
35 /* A Short Introduction to Adding a Command-Line Option.
37 Before adding a command-line option, consider if it is really
38 necessary. Each additional command-line option adds complexity and
39 is difficult to remove in subsequent versions.
41 In the following, consider adding the command-line argument
44 1. Each command-line option is specified in the specs file. The
45 notation is described below in the comment entitled "The Specs
48 2. In this file, add an entry to "option_map" equating the long
49 `--' argument version and any shorter, single letter version. Read
50 the comments in the declaration of "struct option_map" for an
51 explanation. Do not omit the first `-'.
53 3. Look in the "specs" file to determine which program or option
54 list should be given the argument, e.g., "cc1_options". Add the
55 appropriate syntax for the shorter option version to the
56 corresponding "const char *" entry in this file. Omit the first
57 `-' from the option. For example, use `-bar', rather than `--bar'.
59 4. If the argument takes an argument, e.g., `--baz argument1',
60 modify either DEFAULT_SWITCH_TAKES_ARG or
61 DEFAULT_WORD_SWITCH_TAKES_ARG in this file. Omit the first `-'
64 5. Document the option in this file's display_help(). If the
65 option is passed to a subprogram, modify its corresponding
66 function, e.g., cppinit.c:print_help() or toplev.c:display_help(),
69 6. Compile and test. Make sure that your new specs file is being
70 read. For example, use a debugger to investigate the value of
71 "specs_file" in main(). */
76 #if ! defined( SIGCHLD ) && defined( SIGCLD )
77 # define SIGCHLD SIGCLD
85 #ifdef HAVE_SYS_RESOURCE_H
86 #include <sys/resource.h>
88 #if defined (HAVE_DECL_GETRUSAGE) && !HAVE_DECL_GETRUSAGE
89 extern int getrusage PARAMS ((int, struct rusage *));
92 /* By default there is no special suffix for target executables. */
93 /* FIXME: when autoconf is fixed, remove the host check - dj */
94 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
95 #define HAVE_TARGET_EXECUTABLE_SUFFIX
97 #undef TARGET_EXECUTABLE_SUFFIX
98 #define TARGET_EXECUTABLE_SUFFIX ""
101 /* By default there is no special suffix for host executables. */
102 #ifdef HOST_EXECUTABLE_SUFFIX
103 #define HAVE_HOST_EXECUTABLE_SUFFIX
105 #define HOST_EXECUTABLE_SUFFIX ""
108 /* By default, the suffix for target object files is ".o". */
109 #ifdef TARGET_OBJECT_SUFFIX
110 #define HAVE_TARGET_OBJECT_SUFFIX
112 #define TARGET_OBJECT_SUFFIX ".o"
116 /* FIXME: the location independence code for VMS is hairier than this,
117 and hasn't been written. */
123 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
125 #define obstack_chunk_alloc xmalloc
126 #define obstack_chunk_free free
128 #ifndef GET_ENV_PATH_LIST
129 #define GET_ENV_PATH_LIST(VAR,NAME) do { (VAR) = getenv (NAME); } while (0)
132 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
133 #ifndef LIBRARY_PATH_ENV
134 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
138 #define kill(p,s) raise(s)
141 /* If a stage of compilation returns an exit status >= 1,
142 compilation of that file ceases. */
144 #define MIN_FATAL_STATUS 1
146 /* Flag set by cppspec.c to 1. */
149 /* Flag saying to pass the greatest exit code returned by a sub-process
150 to the calling program. */
151 static int pass_exit_codes;
153 /* Definition of string containing the arguments given to configure. */
154 #include "configargs.h"
156 /* Flag saying to print the directories gcc will search through looking for
157 programs, libraries, etc. */
159 static int print_search_dirs;
161 /* Flag saying to print the full filename of this file
162 as found through our usual search mechanism. */
164 static const char *print_file_name = NULL;
166 /* As print_file_name, but search for executable file. */
168 static const char *print_prog_name = NULL;
170 /* Flag saying to print the relative path we'd use to
171 find libgcc.a given the current compiler flags. */
173 static int print_multi_directory;
175 /* Flag saying to print the list of subdirectories and
176 compiler flags used to select them in a standard form. */
178 static int print_multi_lib;
180 /* Flag saying to print the command line options understood by gcc and its
183 static int print_help_list;
185 /* Flag indicating whether we should print the command and arguments */
187 static int verbose_flag;
189 /* Flag indicating whether we should ONLY print the command and
190 arguments (like verbose_flag) without executing the command.
191 Displayed arguments are quoted so that the generated command
192 line is suitable for execution. This is intended for use in
193 shell scripts to capture the driver-generated command line. */
194 static int verbose_only_flag;
196 /* Flag indicating to print target specific command line options. */
198 static int target_help_flag;
200 /* Flag indicating whether we should report subprocess execution times
201 (if this is supported by the system - see pexecute.c). */
203 static int report_times;
205 /* Nonzero means write "temp" files in source directory
206 and use the source file's name in them, and don't delete them. */
208 static int save_temps_flag;
210 /* The compiler version. */
212 static const char *compiler_version;
214 /* The target version specified with -V */
216 static const char *spec_version = DEFAULT_TARGET_VERSION;
218 /* The target machine specified with -b. */
220 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
222 /* Nonzero if cross-compiling.
223 When -b is used, the value comes from the `specs' file. */
226 static const char *cross_compile = "1";
228 static const char *cross_compile = "0";
231 #ifdef MODIFY_TARGET_NAME
233 /* Information on how to alter the target name based on a command-line
234 switch. The only case we support now is simply appending or deleting a
235 string to or from the end of the first part of the configuration name. */
237 static const struct modify_target
239 const char *const sw;
240 const enum add_del {ADD, DELETE} add_del;
241 const char *const str;
243 modify_target[] = MODIFY_TARGET_NAME;
246 /* The number of errors that have occurred; the link phase will not be
247 run if this is non-zero. */
248 static int error_count = 0;
250 /* Greatest exit code of sub-processes that has been encountered up to
252 static int greatest_status = 1;
254 /* This is the obstack which we use to allocate many strings. */
256 static struct obstack obstack;
258 /* This is the obstack to build an environment variable to pass to
259 collect2 that describes all of the relevant switches of what to
260 pass the compiler in building the list of pointers to constructors
263 static struct obstack collect_obstack;
265 /* These structs are used to collect resource usage information for
267 #ifdef HAVE_GETRUSAGE
268 static struct rusage rus, prus;
271 /* Forward declaration for prototypes. */
274 static void init_spec PARAMS ((void));
276 static char **split_directories PARAMS ((const char *, int *));
277 static void free_split_directories PARAMS ((char **));
278 static char *make_relative_prefix PARAMS ((const char *, const char *, const char *));
280 static void store_arg PARAMS ((const char *, int, int));
281 static char *load_specs PARAMS ((const char *));
282 static void read_specs PARAMS ((const char *, int));
283 static void set_spec PARAMS ((const char *, const char *));
284 static struct compiler *lookup_compiler PARAMS ((const char *, size_t, const char *));
285 static char *build_search_list PARAMS ((struct path_prefix *, const char *, int));
286 static void putenv_from_prefixes PARAMS ((struct path_prefix *, const char *));
287 static int access_check PARAMS ((const char *, int));
288 static char *find_a_file PARAMS ((struct path_prefix *, const char *, int));
289 static void add_prefix PARAMS ((struct path_prefix *, const char *,
290 const char *, int, int, int *));
291 static void translate_options PARAMS ((int *, const char *const **));
292 static char *skip_whitespace PARAMS ((char *));
293 static void delete_if_ordinary PARAMS ((const char *));
294 static void delete_temp_files PARAMS ((void));
295 static void delete_failure_queue PARAMS ((void));
296 static void clear_failure_queue PARAMS ((void));
297 static int check_live_switch PARAMS ((int, int));
298 static const char *handle_braces PARAMS ((const char *));
299 static char *save_string PARAMS ((const char *, int));
300 static void set_collect_gcc_options PARAMS ((void));
301 static int do_spec_1 PARAMS ((const char *, int, const char *));
302 static const char *find_file PARAMS ((const char *));
303 static int is_directory PARAMS ((const char *, const char *, int));
304 static void validate_switches PARAMS ((const char *));
305 static void validate_all_switches PARAMS ((void));
306 static void give_switch PARAMS ((int, int, int));
307 static int used_arg PARAMS ((const char *, int));
308 static int default_arg PARAMS ((const char *, int));
309 static void set_multilib_dir PARAMS ((void));
310 static void print_multilib_info PARAMS ((void));
311 static void perror_with_name PARAMS ((const char *));
312 static void pfatal_pexecute PARAMS ((const char *, const char *))
314 static void notice PARAMS ((const char *, ...))
316 static void display_help PARAMS ((void));
317 static void add_preprocessor_option PARAMS ((const char *, int));
318 static void add_assembler_option PARAMS ((const char *, int));
319 static void add_linker_option PARAMS ((const char *, int));
320 static void process_command PARAMS ((int, const char *const *));
321 static int execute PARAMS ((void));
322 static void clear_args PARAMS ((void));
323 static void fatal_error PARAMS ((int));
324 #ifdef ENABLE_SHARED_LIBGCC
325 static void init_gcc_specs PARAMS ((struct obstack *,
326 const char *, const char *,
329 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
330 static const char *convert_filename PARAMS ((const char *, int, int));
333 /* The Specs Language
335 Specs are strings containing lines, each of which (if not blank)
336 is made up of a program name, and arguments separated by spaces.
337 The program name must be exact and start from root, since no path
338 is searched and it is unreliable to depend on the current working directory.
339 Redirection of input or output is not supported; the subprograms must
340 accept filenames saying what files to read and write.
342 In addition, the specs can contain %-sequences to substitute variable text
343 or for conditional text. Here is a table of all defined %-sequences.
344 Note that spaces are not generated automatically around the results of
345 expanding these sequences; therefore, you can concatenate them together
346 or with constant text in a single argument.
348 %% substitute one % into the program name or argument.
349 %i substitute the name of the input file being processed.
350 %b substitute the basename of the input file being processed.
351 This is the substring up to (and not including) the last period
352 and not including the directory.
353 %B same as %b, but include the file suffix (text after the last period).
355 substitute a file name that has suffix SUFFIX and is chosen
356 once per compilation, and mark the argument a la %d. To reduce
357 exposure to denial-of-service attacks, the file name is now
358 chosen in a way that is hard to predict even when previously
359 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
360 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
361 the regexp "[.A-Za-z]*%O"; "%O" is treated exactly as if it
362 had been pre-processed. Previously, %g was simply substituted
363 with a file name chosen once per compilation, without regard
364 to any appended suffix (which was therefore treated just like
365 ordinary text), making such attacks more likely to succeed.
367 like %g, but generates a new temporary file name even if %uSUFFIX
370 substitutes the last file name generated with %uSUFFIX, generating a
371 new one if there is no such last file name. In the absence of any
372 %uSUFFIX, this is just like %gSUFFIX, except they don't share
373 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
374 would involve the generation of two distinct file names, one
375 for each `%g.s' and another for each `%U.s'. Previously, %U was
376 simply substituted with a file name chosen for the previous %u,
377 without regard to any appended suffix.
379 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
380 writable, and if save-temps is off; otherwise, substitute the name
381 of a temporary file, just like %u. This temporary file is not
382 meant for communication between processes, but rather as a junk
385 substitutes .SUFFIX for the suffixes of a matched switch's args when
386 it is subsequently output with %*. SUFFIX is terminated by the next
388 %d marks the argument containing or following the %d as a
389 temporary file name, so that that file will be deleted if CC exits
390 successfully. Unlike %g, this contributes no text to the argument.
391 %w marks the argument containing or following the %w as the
392 "output file" of this compilation. This puts the argument
393 into the sequence of arguments that %o will substitute later.
395 like %{...} but mark last argument supplied within
396 as a file to be deleted on failure.
397 %o substitutes the names of all the output files, with spaces
398 automatically placed around them. You should write spaces
399 around the %o as well or the results are undefined.
400 %o is for use in the specs for running the linker.
401 Input files whose names have no recognized suffix are not compiled
402 at all, but they are included among the output files, so they will
404 %O substitutes the suffix for object files. Note that this is
405 handled specially when it immediately follows %g, %u, or %U
406 (with or without a suffix argument) because of the need for
407 those to form complete file names. The handling is such that
408 %O is treated exactly as if it had already been substituted,
409 except that %g, %u, and %U do not currently support additional
410 SUFFIX characters following %O as they would following, for
412 %p substitutes the standard macro predefinitions for the
413 current target machine. Use this when running cpp.
414 %P like %p, but puts `__' before and after the name of each macro.
415 (Except macros that already have __.)
417 %I Substitute a -iprefix option made from GCC_EXEC_PREFIX.
418 %s current argument is the name of a library or startup file of some sort.
419 Search for that file in a standard list of directories
420 and substitute the full name found.
421 %eSTR Print STR as an error message. STR is terminated by a newline.
422 Use this when inconsistent options are detected.
423 %nSTR Print STR as an notice. STR is terminated by a newline.
424 %x{OPTION} Accumulate an option for %X.
425 %X Output the accumulated linker options specified by compilations.
426 %Y Output the accumulated assembler options specified by compilations.
427 %Z Output the accumulated preprocessor options specified by compilations.
428 %v1 Substitute the major version number of GCC.
429 (For version 2.5.3, this is 2.)
430 %v2 Substitute the minor version number of GCC.
431 (For version 2.5.3, this is 5.)
432 %v3 Substitute the patch level number of GCC.
433 (For version 2.5.3, this is 3.)
434 %a process ASM_SPEC as a spec.
435 This allows config.h to specify part of the spec for running as.
436 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
437 used here. This can be used to run a post-processor after the
438 assembler has done its job.
439 %D Dump out a -L option for each directory in startfile_prefixes.
440 If multilib_dir is set, extra entries are generated with it affixed.
441 %l process LINK_SPEC as a spec.
442 %L process LIB_SPEC as a spec.
443 %G process LIBGCC_SPEC as a spec.
444 %M output multilib_dir with directory separators replaced with "_";
445 if multilib_dir is not set or is ".", output "".
446 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
447 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
448 %C process CPP_SPEC as a spec.
449 %1 process CC1_SPEC as a spec.
450 %2 process CC1PLUS_SPEC as a spec.
451 %| output "-" if the input for the current command is coming from a pipe.
452 %* substitute the variable part of a matched option. (See below.)
453 Note that each comma in the substituted string is replaced by
455 %{S} substitutes the -S switch, if that switch was given to CC.
456 If that switch was not specified, this substitutes nothing.
457 Here S is a metasyntactic variable.
458 %{S*} substitutes all the switches specified to CC whose names start
459 with -S. This is used for -o, -I, etc; switches that take
460 arguments. CC considers `-o foo' as being one switch whose
461 name starts with `o'. %{o*} would substitute this text,
462 including the space; thus, two arguments would be generated.
463 %{^S*} likewise, but don't put a blank between a switch and any args.
464 %{S*&T*} likewise, but preserve order of S and T options (the order
465 of S and T in the spec is not significant). Can be any number
466 of ampersand-separated variables; for each the wild card is
467 optional. Useful for CPP as %{D*&U*&A*}.
468 %{S*:X} substitutes X if one or more switches whose names start with -S are
469 specified to CC. Note that the tail part of the -S option
470 (i.e. the part matched by the `*') will be substituted for each
471 occurrence of %* within X.
472 %{<S} remove all occurrences of -S from the command line.
473 Note - this option is position dependent. % commands in the
474 spec string before this option will see -S, % commands in the
475 spec string after this option will not.
476 %{S:X} substitutes X, but only if the -S switch was given to CC.
477 %{!S:X} substitutes X, but only if the -S switch was NOT given to CC.
478 %{|S:X} like %{S:X}, but if no S switch, substitute `-'.
479 %{|!S:X} like %{!S:X}, but if there is an S switch, substitute `-'.
480 %{.S:X} substitutes X, but only if processing a file with suffix S.
481 %{!.S:X} substitutes X, but only if NOT processing a file with suffix S.
482 %{S|P:X} substitutes X if either -S or -P was given to CC. This may be
483 combined with ! and . as above binding stronger than the OR.
484 %(Spec) processes a specification defined in a specs file as *Spec:
485 %[Spec] as above, but put __ around -D arguments
487 The conditional text X in a %{S:X} or %{!S:X} construct may contain
488 other nested % constructs or spaces, or even newlines. They are
489 processed as usual, as described above.
491 The -O, -f, -m, and -W switches are handled specifically in these
492 constructs. If another value of -O or the negated form of a -f, -m, or
493 -W switch is found later in the command line, the earlier switch
494 value is ignored, except with {S*} where S is just one letter; this
495 passes all matching options.
497 The character | at the beginning of the predicate text is used to indicate
498 that a command should be piped to the following command, but only if -pipe
501 Note that it is built into CC which switches take arguments and which
502 do not. You might think it would be useful to generalize this to
503 allow each compiler's spec to say which switches take arguments. But
504 this cannot be done in a consistent fashion. CC cannot even decide
505 which input files have been specified without knowing which switches
506 take arguments, and it must know which input files to compile in order
507 to tell which compilers to run.
509 CC also knows implicitly that arguments starting in `-l' are to be
510 treated as compiler output files, and passed to the linker in their
511 proper position among the other output files. */
513 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
515 /* config.h can define ASM_SPEC to provide extra args to the assembler
516 or extra switch-translations. */
521 /* config.h can define ASM_FINAL_SPEC to run a post processor after
522 the assembler has run. */
523 #ifndef ASM_FINAL_SPEC
524 #define ASM_FINAL_SPEC ""
527 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
528 or extra switch-translations. */
533 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
534 or extra switch-translations. */
539 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
540 or extra switch-translations. */
542 #define CC1PLUS_SPEC ""
545 /* config.h can define LINK_SPEC to provide extra args to the linker
546 or extra switch-translations. */
551 /* config.h can define LIB_SPEC to override the default libraries. */
553 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
556 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
559 #if defined(LINK_LIBGCC_SPECIAL) || defined(LINK_LIBGCC_SPECIAL_1)
560 /* Have gcc do the search for libgcc.a. */
561 #define LIBGCC_SPEC "libgcc.a%s"
563 #define LIBGCC_SPEC "-lgcc"
567 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
568 #ifndef STARTFILE_SPEC
569 #define STARTFILE_SPEC \
570 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
573 /* config.h can define SWITCHES_NEED_SPACES to control which options
574 require spaces between the option and the argument. */
575 #ifndef SWITCHES_NEED_SPACES
576 #define SWITCHES_NEED_SPACES ""
579 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
581 #define ENDFILE_SPEC ""
585 #define LINKER_NAME "collect2"
588 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
590 #ifndef ASM_DEBUG_SPEC
591 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
592 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
593 # define ASM_DEBUG_SPEC \
594 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
595 ? "%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}" \
596 : "%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}")
598 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
599 # define ASM_DEBUG_SPEC "%{g*:--gstabs}"
601 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
602 # define ASM_DEBUG_SPEC "%{g*:--gdwarf2}"
606 #ifndef ASM_DEBUG_SPEC
607 # define ASM_DEBUG_SPEC ""
610 /* Here is the spec for running the linker, after compiling all files. */
612 /* -u* was put back because both BSD and SysV seem to support it. */
613 /* %{static:} simply prevents an error message if the target machine
614 doesn't handle -static. */
615 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
616 scripts which exist in user specified directories, or in standard
618 #ifndef LINK_COMMAND_SPEC
619 #define LINK_COMMAND_SPEC "\
620 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
621 %(linker) %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r} %{s} %{t}\
622 %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
623 %{static:} %{L*} %(link_libgcc) %o %{!nostdlib:%{!nodefaultlibs:%G %L %G}}\
624 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
627 #ifndef LINK_LIBGCC_SPEC
628 # ifdef LINK_LIBGCC_SPECIAL
629 /* Don't generate -L options for startfile prefix list. */
630 # define LINK_LIBGCC_SPEC ""
632 /* Do generate them. */
633 # define LINK_LIBGCC_SPEC "%D"
637 static const char *asm_debug = ASM_DEBUG_SPEC;
638 static const char *cpp_spec = CPP_SPEC;
639 static const char *cpp_predefines = CPP_PREDEFINES;
640 static const char *cc1_spec = CC1_SPEC;
641 static const char *cc1plus_spec = CC1PLUS_SPEC;
642 static const char *asm_spec = ASM_SPEC;
643 static const char *asm_final_spec = ASM_FINAL_SPEC;
644 static const char *link_spec = LINK_SPEC;
645 static const char *lib_spec = LIB_SPEC;
646 static const char *libgcc_spec = LIBGCC_SPEC;
647 static const char *endfile_spec = ENDFILE_SPEC;
648 static const char *startfile_spec = STARTFILE_SPEC;
649 static const char *switches_need_spaces = SWITCHES_NEED_SPACES;
650 static const char *linker_name_spec = LINKER_NAME;
651 static const char *link_command_spec = LINK_COMMAND_SPEC;
652 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
654 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
655 There should be no need to override these in target dependent files,
656 but we need to copy them to the specs file so that newer versions
657 of the GCC driver can correctly drive older tool chains with the
658 appropriate -B options. */
660 static const char *trad_capable_cpp =
661 "%{traditional|ftraditional|traditional-cpp:trad}cpp0";
663 static const char *cpp_unique_options =
664 "%{C:%{!E:%eGNU C does not support -C without using -E}}\
665 %{nostdinc*} %{C} %{v} %{I*} %{P} %{$} %I\
666 %{MD:-M -MF %W{!o: %b.d}%W{o*:%.d%*}}\
667 %{MMD:-MM -MF %W{!o: %b.d}%W{o*:%.d%*}}\
668 %{M} %{MM} %W{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
669 %{!E:%{!M:%{!MM:%{MD|MMD:%{o*:-MQ %*}}}}}\
670 %{!no-gcc:-D__GNUC__=%v1 -D__GNUC_MINOR__=%v2 -D__GNUC_PATCHLEVEL__=%v3}\
671 %{!undef:%{!ansi:%{!std=*:%p}%{std=gnu*:%p}} %P} %{trigraphs}\
672 %{Os:-D__OPTIMIZE_SIZE__} %{O*:%{!O0:-D__OPTIMIZE__}}\
673 %{fno-inline|O0|!O*:-D__NO_INLINE__} %{ffast-math:-D__FAST_MATH__}\
674 %{fshort-wchar:-U__WCHAR_TYPE__ -D__WCHAR_TYPE__=short\\ unsigned\\ int}\
675 %{ffreestanding:-D__STDC_HOSTED__=0} %{fno-hosted:-D__STDC_HOSTED__=0}\
676 %{!ffreestanding:%{!fno-hosted:-D__STDC_HOSTED__=1}} %{remap}\
677 %{g3:-dD} %{H} %C %{D*&U*&A*} %{i*} %Z %i\
680 /* This contains cpp options which are common with cc1_options and are passed
681 only when preprocessing only to avoid duplication. */
682 static const char *cpp_options =
683 "%(cpp_unique_options) %{std*} %{d*} %{W*} %{w} %{pedantic*}\
684 %{fshow-column} %{fno-show-column}\
685 %{fsigned-char&funsigned-char}\
686 %{fleading-underscore} %{fno-leading-underscore}\
687 %{fno-operator-names} %{ftabstop=*}";
689 /* NB: This is shared amongst all front-ends. */
690 static const char *cc1_options =
691 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
692 %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\
693 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{std*} %{ansi}\
694 %{v:-version} %{pg:-p} %{p} %{f*}\
695 %{Qn:-fno-ident} %{--help:--help}\
696 %{--target-help:--target-help}\
697 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
698 %{fsyntax-only:-o %j} %{-param*}";
700 static const char *asm_options =
701 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
703 static const char *invoke_as =
704 "%{!S:-o %{|!pipe:%g.s} |\n as %(asm_options) %{!pipe:%g.s} %A }";
706 /* Some compilers have limits on line lengths, and the multilib_select
707 and/or multilib_matches strings can be very long, so we build them at
709 static struct obstack multilib_obstack;
710 static const char *multilib_select;
711 static const char *multilib_matches;
712 static const char *multilib_defaults;
713 static const char *multilib_exclusions;
714 #include "multilib.h"
716 /* Check whether a particular argument is a default argument. */
718 #ifndef MULTILIB_DEFAULTS
719 #define MULTILIB_DEFAULTS { "" }
722 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
726 struct user_specs *next;
727 const char *filename;
730 static struct user_specs *user_specs_head, *user_specs_tail;
732 /* This defines which switch letters take arguments. */
734 #define DEFAULT_SWITCH_TAKES_ARG(CHAR) \
735 ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o' \
736 || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u' \
737 || (CHAR) == 'I' || (CHAR) == 'm' || (CHAR) == 'x' \
738 || (CHAR) == 'L' || (CHAR) == 'A' || (CHAR) == 'V' \
739 || (CHAR) == 'B' || (CHAR) == 'b')
741 #ifndef SWITCH_TAKES_ARG
742 #define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR)
745 /* This defines which multi-letter switches take arguments. */
747 #define DEFAULT_WORD_SWITCH_TAKES_ARG(STR) \
748 (!strcmp (STR, "Tdata") || !strcmp (STR, "Ttext") \
749 || !strcmp (STR, "Tbss") || !strcmp (STR, "include") \
750 || !strcmp (STR, "imacros") || !strcmp (STR, "aux-info") \
751 || !strcmp (STR, "idirafter") || !strcmp (STR, "iprefix") \
752 || !strcmp (STR, "iwithprefix") || !strcmp (STR, "iwithprefixbefore") \
753 || !strcmp (STR, "isystem") || !strcmp (STR, "-param") \
754 || !strcmp (STR, "specs") \
755 || !strcmp (STR, "MF") || !strcmp (STR, "MT") || !strcmp (STR, "MQ"))
757 #ifndef WORD_SWITCH_TAKES_ARG
758 #define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
761 #ifdef HAVE_TARGET_EXECUTABLE_SUFFIX
762 /* This defines which switches stop a full compilation. */
763 #define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \
764 ((CHAR) == 'c' || (CHAR) == 'S')
766 #ifndef SWITCH_CURTAILS_COMPILATION
767 #define SWITCH_CURTAILS_COMPILATION(CHAR) \
768 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR)
772 /* Record the mapping from file suffixes for compilation specs. */
776 const char *suffix; /* Use this compiler for input files
777 whose names end in this suffix. */
779 const char *spec; /* To use this compiler, run this spec. */
781 const char *cpp_spec; /* If non-NULL, substitute this spec
782 for `%C', rather than the usual
786 /* Pointer to a vector of `struct compiler' that gives the spec for
787 compiling a file, based on its suffix.
788 A file that does not end in any of these suffixes will be passed
789 unchanged to the loader and nothing else will be done to it.
791 An entry containing two 0s is used to terminate the vector.
793 If multiple entries match a file, the last matching one is used. */
795 static struct compiler *compilers;
797 /* Number of entries in `compilers', not counting the null terminator. */
799 static int n_compilers;
801 /* The default list of file name suffixes and their compilation specs. */
803 static const struct compiler default_compilers[] =
805 /* Add lists of suffixes of known languages here. If those languages
806 were not present when we built the driver, we will hit these copies
807 and be given a more meaningful error than "file not used since
808 linking is not done". */
809 {".m", "#Objective-C", 0}, {".mi", "#Objective-C", 0},
810 {".cc", "#C++", 0}, {".cxx", "#C++", 0}, {".cpp", "#C++", 0},
811 {".cp", "#C++", 0}, {".c++", "#C++", 0}, {".C", "#C++", 0},
813 {".ads", "#Ada", 0}, {".adb", "#Ada", 0},
814 {".f", "#Fortran", 0}, {".for", "#Fortran", 0}, {".fpp", "#Fortran", 0},
815 {".F", "#Fortran", 0}, {".FOR", "#Fortran", 0}, {".FPP", "#Fortran", 0},
816 {".r", "#Ratfor", 0},
817 {".p", "#Pascal", 0}, {".pas", "#Pascal", 0},
818 {".ch", "#Chill", 0}, {".chi", "#Chill", 0},
819 {".java", "#Java", 0}, {".class", "#Java", 0},
820 {".zip", "#Java", 0}, {".jar", "#Java", 0},
821 /* Next come the entries for C. */
824 /* cc1 has an integrated ISO C preprocessor. We should invoke the
825 external preprocessor if -save-temps is given. */
826 "%{E|M|MM:%(trad_capable_cpp) -lang-c %{ansi:-std=c89} %(cpp_options)}\
828 %{traditional|ftraditional:\
829 %eGNU C no longer supports -traditional without -E}\
830 %{save-temps|traditional-cpp:%(trad_capable_cpp) \
831 -lang-c %{ansi:-std=c89} %(cpp_options) %b.i \n\
832 cc1 -fpreprocessed %b.i %(cc1_options)}\
833 %{!save-temps:%{!traditional-cpp:\
834 cc1 -lang-c %{ansi:-std=c89} %(cpp_unique_options) %(cc1_options)}}\
835 %{!fsyntax-only:%(invoke_as)}}}}", 0},
837 "%{!E:%e-E required when input is from standard input}\
838 %(trad_capable_cpp) -lang-c %{ansi:-std=c89} %(cpp_options)", 0},
839 {".h", "@c-header", 0},
841 "%{!E:%ecompilation of header file requested} \
842 %(trad_capable_cpp) -lang-c %{ansi:-std=c89} %(cpp_options)", 0},
843 {".i", "@cpp-output", 0},
845 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0},
846 {".s", "@assembler", 0},
848 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0},
849 {".S", "@assembler-with-cpp", 0},
850 {"@assembler-with-cpp",
851 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
852 %{!M:%{!MM:%{!E:%{!S:-o %{|!pipe:%g.s} |\n\
853 as %(asm_debug) %(asm_options) %{!pipe:%g.s} %A }}}}", 0},
855 /* Mark end of table */
859 /* Number of elements in default_compilers, not counting the terminator. */
861 static int n_default_compilers
862 = (sizeof default_compilers / sizeof (struct compiler)) - 1;
864 /* A vector of options to give to the linker.
865 These options are accumulated by %x,
866 and substituted into the linker command with %X. */
867 static int n_linker_options;
868 static char **linker_options;
870 /* A vector of options to give to the assembler.
871 These options are accumulated by -Wa,
872 and substituted into the assembler command with %Y. */
873 static int n_assembler_options;
874 static char **assembler_options;
876 /* A vector of options to give to the preprocessor.
877 These options are accumulated by -Wp,
878 and substituted into the preprocessor command with %Z. */
879 static int n_preprocessor_options;
880 static char **preprocessor_options;
882 /* Define how to map long options into short ones. */
884 /* This structure describes one mapping. */
887 /* The long option's name. */
888 const char *const name;
889 /* The equivalent short option. */
890 const char *const equivalent;
891 /* Argument info. A string of flag chars; NULL equals no options.
892 a => argument required.
893 o => argument optional.
894 j => join argument to equivalent, making one word.
895 * => require other text after NAME as an argument. */
896 const char *const arg_info;
899 /* This is the table of mappings. Mappings are tried sequentially
900 for each option encountered; the first one that matches, wins. */
902 static const struct option_map option_map[] =
904 {"--all-warnings", "-Wall", 0},
905 {"--ansi", "-ansi", 0},
906 {"--assemble", "-S", 0},
907 {"--assert", "-A", "a"},
908 {"--classpath", "-fclasspath=", "aj"},
909 {"--bootclasspath", "-fbootclasspath=", "aj"},
910 {"--CLASSPATH", "-fclasspath=", "aj"},
911 {"--comments", "-C", 0},
912 {"--compile", "-c", 0},
913 {"--debug", "-g", "oj"},
914 {"--define-macro", "-D", "aj"},
915 {"--dependencies", "-M", 0},
916 {"--dump", "-d", "a"},
917 {"--dumpbase", "-dumpbase", "a"},
918 {"--entry", "-e", 0},
919 {"--extra-warnings", "-W", 0},
920 {"--for-assembler", "-Wa", "a"},
921 {"--for-linker", "-Xlinker", "a"},
922 {"--force-link", "-u", "a"},
923 {"--imacros", "-imacros", "a"},
924 {"--include", "-include", "a"},
925 {"--include-barrier", "-I-", 0},
926 {"--include-directory", "-I", "aj"},
927 {"--include-directory-after", "-idirafter", "a"},
928 {"--include-prefix", "-iprefix", "a"},
929 {"--include-with-prefix", "-iwithprefix", "a"},
930 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
931 {"--include-with-prefix-after", "-iwithprefix", "a"},
932 {"--language", "-x", "a"},
933 {"--library-directory", "-L", "a"},
934 {"--machine", "-m", "aj"},
935 {"--machine-", "-m", "*j"},
936 {"--no-line-commands", "-P", 0},
937 {"--no-precompiled-includes", "-noprecomp", 0},
938 {"--no-standard-includes", "-nostdinc", 0},
939 {"--no-standard-libraries", "-nostdlib", 0},
940 {"--no-warnings", "-w", 0},
941 {"--optimize", "-O", "oj"},
942 {"--output", "-o", "a"},
943 {"--output-class-directory", "-foutput-class-dir=", "ja"},
944 {"--param", "--param", "a"},
945 {"--pedantic", "-pedantic", 0},
946 {"--pedantic-errors", "-pedantic-errors", 0},
947 {"--pipe", "-pipe", 0},
948 {"--prefix", "-B", "a"},
949 {"--preprocess", "-E", 0},
950 {"--print-search-dirs", "-print-search-dirs", 0},
951 {"--print-file-name", "-print-file-name=", "aj"},
952 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
953 {"--print-missing-file-dependencies", "-MG", 0},
954 {"--print-multi-lib", "-print-multi-lib", 0},
955 {"--print-multi-directory", "-print-multi-directory", 0},
956 {"--print-prog-name", "-print-prog-name=", "aj"},
957 {"--profile", "-p", 0},
958 {"--profile-blocks", "-a", 0},
959 {"--quiet", "-q", 0},
960 {"--save-temps", "-save-temps", 0},
961 {"--shared", "-shared", 0},
962 {"--silent", "-q", 0},
963 {"--specs", "-specs=", "aj"},
964 {"--static", "-static", 0},
965 {"--std", "-std=", "aj"},
966 {"--symbolic", "-symbolic", 0},
967 {"--target", "-b", "a"},
968 {"--time", "-time", 0},
969 {"--trace-includes", "-H", 0},
970 {"--traditional", "-traditional", 0},
971 {"--traditional-cpp", "-traditional-cpp", 0},
972 {"--trigraphs", "-trigraphs", 0},
973 {"--undefine-macro", "-U", "aj"},
974 {"--use-version", "-V", "a"},
975 {"--user-dependencies", "-MM", 0},
976 {"--verbose", "-v", 0},
977 {"--warn-", "-W", "*j"},
978 {"--write-dependencies", "-MD", 0},
979 {"--write-user-dependencies", "-MMD", 0},
984 #ifdef TARGET_OPTION_TRANSLATE_TABLE
985 static const struct {
986 const char *const option_found;
987 const char *const replacements;
988 } target_option_translations[] =
990 TARGET_OPTION_TRANSLATE_TABLE,
995 /* Translate the options described by *ARGCP and *ARGVP.
996 Make a new vector and store it back in *ARGVP,
997 and store its length in *ARGVC. */
1000 translate_options (argcp, argvp)
1002 const char *const **argvp;
1006 const char *const *argv = *argvp;
1007 int newvsize = (argc + 2) * 2 * sizeof (const char *);
1009 (const char **) xmalloc (newvsize);
1013 newv[newindex++] = argv[i++];
1017 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1021 target_option_translations[tott_idx].option_found;
1024 if (strcmp (target_option_translations[tott_idx].option_found,
1031 for (sp = target_option_translations[tott_idx].replacements;
1038 newvsize += spaces * sizeof (const char *);
1039 newv = (const char **) xrealloc (newv, newvsize);
1041 sp = target_option_translations[tott_idx].replacements;
1050 newv[newindex++] = np;
1051 while (*np != ' ' && *np)
1062 if (target_option_translations[tott_idx].option_found)
1066 /* Translate -- options. */
1067 if (argv[i][0] == '-' && argv[i][1] == '-')
1070 /* Find a mapping that applies to this option. */
1071 for (j = 0; j < ARRAY_SIZE (option_map); j++)
1073 size_t optlen = strlen (option_map[j].name);
1074 size_t arglen = strlen (argv[i]);
1075 size_t complen = arglen > optlen ? optlen : arglen;
1076 const char *arginfo = option_map[j].arg_info;
1081 if (!strncmp (argv[i], option_map[j].name, complen))
1083 const char *arg = 0;
1085 if (arglen < optlen)
1088 for (k = j + 1; k < ARRAY_SIZE (option_map); k++)
1089 if (strlen (option_map[k].name) >= arglen
1090 && !strncmp (argv[i], option_map[k].name, arglen))
1092 error ("ambiguous abbreviation %s", argv[i]);
1096 if (k != ARRAY_SIZE (option_map))
1100 if (arglen > optlen)
1102 /* If the option has an argument, accept that. */
1103 if (argv[i][optlen] == '=')
1104 arg = argv[i] + optlen + 1;
1106 /* If this mapping requires extra text at end of name,
1107 accept that as "argument". */
1108 else if (strchr (arginfo, '*') != 0)
1109 arg = argv[i] + optlen;
1111 /* Otherwise, extra text at end means mismatch.
1112 Try other mappings. */
1117 else if (strchr (arginfo, '*') != 0)
1119 error ("incomplete `%s' option", option_map[j].name);
1123 /* Handle arguments. */
1124 if (strchr (arginfo, 'a') != 0)
1130 error ("missing argument to `%s' option",
1131 option_map[j].name);
1138 else if (strchr (arginfo, '*') != 0)
1140 else if (strchr (arginfo, 'o') == 0)
1143 error ("extraneous argument to `%s' option",
1144 option_map[j].name);
1148 /* Store the translation as one argv elt or as two. */
1149 if (arg != 0 && strchr (arginfo, 'j') != 0)
1150 newv[newindex++] = concat (option_map[j].equivalent, arg,
1154 newv[newindex++] = option_map[j].equivalent;
1155 newv[newindex++] = arg;
1158 newv[newindex++] = option_map[j].equivalent;
1166 /* Handle old-fashioned options--just copy them through,
1167 with their arguments. */
1168 else if (argv[i][0] == '-')
1170 const char *p = argv[i] + 1;
1174 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
1175 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
1176 else if (WORD_SWITCH_TAKES_ARG (p))
1177 nskip += WORD_SWITCH_TAKES_ARG (p);
1178 else if ((c == 'B' || c == 'b' || c == 'V' || c == 'x')
1181 else if (! strcmp (p, "Xlinker"))
1184 /* Watch out for an option at the end of the command line that
1185 is missing arguments, and avoid skipping past the end of the
1187 if (nskip + i > argc)
1192 newv[newindex++] = argv[i++];
1197 /* Ordinary operands, or +e options. */
1198 newv[newindex++] = argv[i++];
1213 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1214 be considered whitespace. */
1215 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1217 else if (*p == '\n' || *p == ' ' || *p == '\t')
1231 /* Structures to keep track of prefixes to try when looking for files. */
1235 const char *prefix; /* String to prepend to the path. */
1236 struct prefix_list *next; /* Next in linked list. */
1237 int require_machine_suffix; /* Don't use without machine_suffix. */
1238 /* 2 means try both machine_suffix and just_machine_suffix. */
1239 int *used_flag_ptr; /* 1 if a file was found with this prefix. */
1240 int priority; /* Sort key - priority within list */
1245 struct prefix_list *plist; /* List of prefixes to try */
1246 int max_len; /* Max length of a prefix in PLIST */
1247 const char *name; /* Name of this list (used in config stuff) */
1250 /* List of prefixes to try when looking for executables. */
1252 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1254 /* List of prefixes to try when looking for startup (crt0) files. */
1256 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1258 /* List of prefixes to try when looking for include files. */
1260 static struct path_prefix include_prefixes = { 0, 0, "include" };
1262 /* Suffix to attach to directories searched for commands.
1263 This looks like `MACHINE/VERSION/'. */
1265 static const char *machine_suffix = 0;
1267 /* Suffix to attach to directories searched for commands.
1268 This is just `MACHINE/'. */
1270 static const char *just_machine_suffix = 0;
1272 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1274 static const char *gcc_exec_prefix;
1276 /* Default prefixes to attach to command names. */
1278 #ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */
1279 #undef MD_EXEC_PREFIX
1280 #undef MD_STARTFILE_PREFIX
1281 #undef MD_STARTFILE_PREFIX_1
1284 /* If no prefixes defined, use the null string, which will disable them. */
1285 #ifndef MD_EXEC_PREFIX
1286 #define MD_EXEC_PREFIX ""
1288 #ifndef MD_STARTFILE_PREFIX
1289 #define MD_STARTFILE_PREFIX ""
1291 #ifndef MD_STARTFILE_PREFIX_1
1292 #define MD_STARTFILE_PREFIX_1 ""
1295 /* Supply defaults for the standard prefixes. */
1297 #ifndef STANDARD_EXEC_PREFIX
1298 #define STANDARD_EXEC_PREFIX "/usr/local/lib/gcc-lib/"
1300 #ifndef STANDARD_STARTFILE_PREFIX
1301 #define STANDARD_STARTFILE_PREFIX "/usr/local/lib/"
1303 #ifndef TOOLDIR_BASE_PREFIX
1304 #define TOOLDIR_BASE_PREFIX "/usr/local/"
1306 #ifndef STANDARD_BINDIR_PREFIX
1307 #define STANDARD_BINDIR_PREFIX "/usr/local/bin"
1310 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1311 static const char *const standard_exec_prefix_1 = "/usr/lib/gcc/";
1312 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1314 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1315 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1316 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1317 static const char *const standard_startfile_prefix_1 = "/lib/";
1318 static const char *const standard_startfile_prefix_2 = "/usr/lib/";
1320 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1321 static const char *tooldir_prefix;
1323 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1325 /* Subdirectory to use for locating libraries. Set by
1326 set_multilib_dir based on the compilation options. */
1328 static const char *multilib_dir;
1330 /* Structure to keep track of the specs that have been defined so far.
1331 These are accessed using %(specname) or %[specname] in a compiler
1336 /* The following 2 fields must be first */
1337 /* to allow EXTRA_SPECS to be initialized */
1338 const char *name; /* name of the spec. */
1339 const char *ptr; /* available ptr if no static pointer */
1341 /* The following fields are not initialized */
1342 /* by EXTRA_SPECS */
1343 const char **ptr_spec; /* pointer to the spec itself. */
1344 struct spec_list *next; /* Next spec in linked list. */
1345 int name_len; /* length of the name */
1346 int alloc_p; /* whether string was allocated */
1349 #define INIT_STATIC_SPEC(NAME,PTR) \
1350 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1352 /* List of statically defined specs. */
1353 static struct spec_list static_specs[] =
1355 INIT_STATIC_SPEC ("asm", &asm_spec),
1356 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1357 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1358 INIT_STATIC_SPEC ("asm_options", &asm_options),
1359 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1360 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1361 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1362 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1363 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1364 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1365 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1366 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1367 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1368 INIT_STATIC_SPEC ("link", &link_spec),
1369 INIT_STATIC_SPEC ("lib", &lib_spec),
1370 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1371 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1372 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces),
1373 INIT_STATIC_SPEC ("predefines", &cpp_predefines),
1374 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1375 INIT_STATIC_SPEC ("version", &compiler_version),
1376 INIT_STATIC_SPEC ("multilib", &multilib_select),
1377 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1378 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1379 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1380 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1381 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1382 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1383 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1384 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1385 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1388 #ifdef EXTRA_SPECS /* additional specs needed */
1389 /* Structure to keep track of just the first two args of a spec_list.
1390 That is all that the EXTRA_SPECS macro gives us. */
1393 const char *const name;
1394 const char *const ptr;
1397 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1398 static struct spec_list *extra_specs = (struct spec_list *) 0;
1401 /* List of dynamically allocates specs that have been defined so far. */
1403 static struct spec_list *specs = (struct spec_list *) 0;
1405 /* Add appropriate libgcc specs to OBSTACK, taking into account
1406 various permutations of -shared-libgcc, -shared, and such. */
1408 #ifdef ENABLE_SHARED_LIBGCC
1410 init_gcc_specs (obstack, shared_name, static_name, eh_name)
1411 struct obstack *obstack;
1412 const char *shared_name;
1413 const char *static_name;
1414 const char *eh_name;
1418 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name,
1419 "}%{!static:%{!static-libgcc:",
1420 "%{!shared:%{!shared-libgcc:", static_name, " ",
1421 eh_name, "}%{shared-libgcc:", shared_name, " ",
1422 static_name, "}}%{shared:",
1424 "%{shared-libgcc:", shared_name,
1425 "}%{!shared-libgcc:", static_name, "}",
1431 obstack_grow (obstack, buf, strlen (buf));
1434 #endif /* ENABLE_SHARED_LIBGCC */
1436 /* Initialize the specs lookup routines. */
1441 struct spec_list *next = (struct spec_list *) 0;
1442 struct spec_list *sl = (struct spec_list *) 0;
1446 return; /* Already initialized. */
1449 notice ("Using built-in specs.\n");
1452 extra_specs = (struct spec_list *)
1453 xcalloc (sizeof (struct spec_list), ARRAY_SIZE (extra_specs_1));
1455 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1457 sl = &extra_specs[i];
1458 sl->name = extra_specs_1[i].name;
1459 sl->ptr = extra_specs_1[i].ptr;
1461 sl->name_len = strlen (sl->name);
1462 sl->ptr_spec = &sl->ptr;
1467 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1469 sl = &static_specs[i];
1474 #ifdef ENABLE_SHARED_LIBGCC
1475 /* ??? If neither -shared-libgcc nor --static-libgcc was
1476 seen, then we should be making an educated guess. Some proposed
1477 heuristics for ELF include:
1479 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1480 program will be doing dynamic loading, which will likely
1481 need the shared libgcc.
1483 (2) If "-ldl", then it's also a fair bet that we're doing
1486 (3) For each ET_DYN we're linking against (either through -lfoo
1487 or /some/path/foo.so), check to see whether it or one of
1488 its dependencies depends on a shared libgcc.
1492 If the runtime is fixed to look for program headers instead
1493 of calling __register_frame_info at all, for each object,
1494 use the shared libgcc if any EH symbol referenced.
1496 If crtstuff is fixed to not invoke __register_frame_info
1497 automatically, for each object, use the shared libgcc if
1498 any non-empty unwind section found.
1500 Doing any of this probably requires invoking an external program to
1501 do the actual object file scanning. */
1503 const char *p = libgcc_spec;
1506 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1507 when given the proper command line arguments. */
1510 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1512 init_gcc_specs (&obstack,
1513 #ifdef NO_SHARED_LIBGCC_MULTILIB
1524 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1526 /* Ug. We don't know shared library extensions. Hope that
1527 systems that use this form don't do shared libraries. */
1528 init_gcc_specs (&obstack,
1529 #ifdef NO_SHARED_LIBGCC_MULTILIB
1542 obstack_1grow (&obstack, *p);
1543 in_sep = (*p == ' ');
1548 obstack_1grow (&obstack, '\0');
1549 libgcc_spec = obstack_finish (&obstack);
1552 #ifdef USE_AS_TRADITIONAL_FORMAT
1553 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1555 static const char tf[] = "--traditional-format ";
1556 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1557 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1558 asm_spec = obstack_finish (&obstack);
1562 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1563 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1564 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1565 link_spec = obstack_finish (&obstack);
1571 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1572 removed; If the spec starts with a + then SPEC is added to the end of the
1576 set_spec (name, spec)
1580 struct spec_list *sl;
1581 const char *old_spec;
1582 int name_len = strlen (name);
1585 /* If this is the first call, initialize the statically allocated specs. */
1588 struct spec_list *next = (struct spec_list *) 0;
1589 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1591 sl = &static_specs[i];
1598 /* See if the spec already exists. */
1599 for (sl = specs; sl; sl = sl->next)
1600 if (name_len == sl->name_len && !strcmp (sl->name, name))
1605 /* Not found - make it. */
1606 sl = (struct spec_list *) xmalloc (sizeof (struct spec_list));
1607 sl->name = xstrdup (name);
1608 sl->name_len = name_len;
1609 sl->ptr_spec = &sl->ptr;
1611 *(sl->ptr_spec) = "";
1616 old_spec = *(sl->ptr_spec);
1617 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1618 ? concat (old_spec, spec + 1, NULL)
1623 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1626 /* Free the old spec. */
1627 if (old_spec && sl->alloc_p)
1628 free ((PTR) old_spec);
1633 /* Accumulate a command (program name and args), and run it. */
1635 /* Vector of pointers to arguments in the current line of specifications. */
1637 static const char **argbuf;
1639 /* Number of elements allocated in argbuf. */
1641 static int argbuf_length;
1643 /* Number of elements in argbuf currently in use (containing args). */
1645 static int argbuf_index;
1647 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1648 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1651 static struct temp_name {
1652 const char *suffix; /* suffix associated with the code. */
1653 int length; /* strlen (suffix). */
1654 int unique; /* Indicates whether %g or %u/%U was used. */
1655 const char *filename; /* associated filename. */
1656 int filename_length; /* strlen (filename). */
1657 struct temp_name *next;
1660 /* Number of commands executed so far. */
1662 static int execution_count;
1664 /* Number of commands that exited with a signal. */
1666 static int signal_count;
1668 /* Name with which this program was invoked. */
1670 static const char *programname;
1672 /* Clear out the vector of arguments (after a command is executed). */
1680 /* Add one argument to the vector at the end.
1681 This is done when a space is seen or at the end of the line.
1682 If DELETE_ALWAYS is nonzero, the arg is a filename
1683 and the file should be deleted eventually.
1684 If DELETE_FAILURE is nonzero, the arg is a filename
1685 and the file should be deleted if this compilation fails. */
1688 store_arg (arg, delete_always, delete_failure)
1690 int delete_always, delete_failure;
1692 if (argbuf_index + 1 == argbuf_length)
1694 = (const char **) xrealloc (argbuf,
1695 (argbuf_length *= 2) * sizeof (const char *));
1697 argbuf[argbuf_index++] = arg;
1698 argbuf[argbuf_index] = 0;
1700 if (delete_always || delete_failure)
1701 record_temp_file (arg, delete_always, delete_failure);
1704 /* Load specs from a file name named FILENAME, replacing occurrences of
1705 various different types of line-endings, \r\n, \n\r and just \r, with
1709 load_specs (filename)
1710 const char *filename;
1714 struct stat statbuf;
1721 notice ("Reading specs from %s\n", filename);
1723 /* Open and stat the file. */
1724 desc = open (filename, O_RDONLY, 0);
1726 pfatal_with_name (filename);
1727 if (stat (filename, &statbuf) < 0)
1728 pfatal_with_name (filename);
1730 /* Read contents of file into BUFFER. */
1731 buffer = xmalloc ((unsigned) statbuf.st_size + 1);
1732 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1734 pfatal_with_name (filename);
1735 buffer[readlen] = 0;
1738 specs = xmalloc (readlen + 1);
1740 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1746 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1748 else if (*(buffer_p + 1) == '\n') /* \r\n */
1762 /* Read compilation specs from a file named FILENAME,
1763 replacing the default ones.
1765 A suffix which starts with `*' is a definition for
1766 one of the machine-specific sub-specs. The "suffix" should be
1767 *asm, *cc1, *cpp, *link, *startfile, etc.
1768 The corresponding spec is stored in asm_spec, etc.,
1769 rather than in the `compilers' vector.
1771 Anything invalid in the file is a fatal error. */
1774 read_specs (filename, main_p)
1775 const char *filename;
1781 buffer = load_specs (filename);
1783 /* Scan BUFFER for specs, putting them in the vector. */
1789 char *in, *out, *p1, *p2, *p3;
1791 /* Advance P in BUFFER to the next nonblank nocomment line. */
1792 p = skip_whitespace (p);
1796 /* Is this a special command that starts with '%'? */
1797 /* Don't allow this for the main specs file, since it would
1798 encourage people to overwrite it. */
1799 if (*p == '%' && !main_p)
1802 while (*p && *p != '\n')
1808 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1809 && (p1[sizeof "%include" - 1] == ' '
1810 || p1[sizeof "%include" - 1] == '\t'))
1814 p1 += sizeof ("%include");
1815 while (*p1 == ' ' || *p1 == '\t')
1818 if (*p1++ != '<' || p[-2] != '>')
1819 fatal ("specs %%include syntax malformed after %ld characters",
1820 (long) (p1 - buffer + 1));
1823 new_filename = find_a_file (&startfile_prefixes, p1, R_OK);
1824 read_specs (new_filename ? new_filename : p1, FALSE);
1827 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1828 && (p1[sizeof "%include_noerr" - 1] == ' '
1829 || p1[sizeof "%include_noerr" - 1] == '\t'))
1833 p1 += sizeof "%include_noerr";
1834 while (*p1 == ' ' || *p1 == '\t')
1837 if (*p1++ != '<' || p[-2] != '>')
1838 fatal ("specs %%include syntax malformed after %ld characters",
1839 (long) (p1 - buffer + 1));
1842 new_filename = find_a_file (&startfile_prefixes, p1, R_OK);
1844 read_specs (new_filename, FALSE);
1845 else if (verbose_flag)
1846 notice ("could not find specs file %s\n", p1);
1849 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1850 && (p1[sizeof "%rename" - 1] == ' '
1851 || p1[sizeof "%rename" - 1] == '\t'))
1854 struct spec_list *sl;
1856 /* Get original name */
1857 p1 += sizeof "%rename";
1858 while (*p1 == ' ' || *p1 == '\t')
1861 if (! ISALPHA ((unsigned char) *p1))
1862 fatal ("specs %%rename syntax malformed after %ld characters",
1863 (long) (p1 - buffer));
1866 while (*p2 && !ISSPACE ((unsigned char) *p2))
1869 if (*p2 != ' ' && *p2 != '\t')
1870 fatal ("specs %%rename syntax malformed after %ld characters",
1871 (long) (p2 - buffer));
1875 while (*p2 == ' ' || *p2 == '\t')
1878 if (! ISALPHA ((unsigned char) *p2))
1879 fatal ("specs %%rename syntax malformed after %ld characters",
1880 (long) (p2 - buffer));
1882 /* Get new spec name. */
1884 while (*p3 && !ISSPACE ((unsigned char) *p3))
1888 fatal ("specs %%rename syntax malformed after %ld characters",
1889 (long) (p3 - buffer));
1892 for (sl = specs; sl; sl = sl->next)
1893 if (name_len == sl->name_len && !strcmp (sl->name, p1))
1897 fatal ("specs %s spec was not found to be renamed", p1);
1899 if (strcmp (p1, p2) == 0)
1904 notice ("rename spec %s to %s\n", p1, p2);
1906 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
1910 set_spec (p2, *(sl->ptr_spec));
1912 free ((PTR) *(sl->ptr_spec));
1914 *(sl->ptr_spec) = "";
1919 fatal ("specs unknown %% command after %ld characters",
1920 (long) (p1 - buffer));
1923 /* Find the colon that should end the suffix. */
1925 while (*p1 && *p1 != ':' && *p1 != '\n')
1928 /* The colon shouldn't be missing. */
1930 fatal ("specs file malformed after %ld characters",
1931 (long) (p1 - buffer));
1933 /* Skip back over trailing whitespace. */
1935 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
1938 /* Copy the suffix to a string. */
1939 suffix = save_string (p, p2 - p);
1940 /* Find the next line. */
1941 p = skip_whitespace (p1 + 1);
1943 fatal ("specs file malformed after %ld characters",
1944 (long) (p - buffer));
1947 /* Find next blank line or end of string. */
1948 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
1951 /* Specs end at the blank line and do not include the newline. */
1952 spec = save_string (p, p1 - p);
1955 /* Delete backslash-newline sequences from the spec. */
1960 if (in[0] == '\\' && in[1] == '\n')
1962 else if (in[0] == '#')
1963 while (*in && *in != '\n')
1971 if (suffix[0] == '*')
1973 if (! strcmp (suffix, "*link_command"))
1974 link_command_spec = spec;
1976 set_spec (suffix + 1, spec);
1980 /* Add this pair to the vector. */
1982 = ((struct compiler *)
1983 xrealloc (compilers,
1984 (n_compilers + 2) * sizeof (struct compiler)));
1986 compilers[n_compilers].suffix = suffix;
1987 compilers[n_compilers].spec = spec;
1989 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
1993 link_command_spec = spec;
1996 if (link_command_spec == 0)
1997 fatal ("spec file has no spec for linking");
2000 /* Record the names of temporary files we tell compilers to write,
2001 and delete them at the end of the run. */
2003 /* This is the common prefix we use to make temp file names.
2004 It is chosen once for each run of this program.
2005 It is substituted into a spec by %g or %j.
2006 Thus, all temp file names contain this prefix.
2007 In practice, all temp file names start with this prefix.
2009 This prefix comes from the envvar TMPDIR if it is defined;
2010 otherwise, from the P_tmpdir macro if that is defined;
2011 otherwise, in /usr/tmp or /tmp;
2012 or finally the current directory if all else fails. */
2014 static const char *temp_filename;
2016 /* Length of the prefix. */
2018 static int temp_filename_length;
2020 /* Define the list of temporary files to delete. */
2025 struct temp_file *next;
2028 /* Queue of files to delete on success or failure of compilation. */
2029 static struct temp_file *always_delete_queue;
2030 /* Queue of files to delete on failure of compilation. */
2031 static struct temp_file *failure_delete_queue;
2033 /* Record FILENAME as a file to be deleted automatically.
2034 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2035 otherwise delete it in any case.
2036 FAIL_DELETE nonzero means delete it if a compilation step fails;
2037 otherwise delete it in any case. */
2040 record_temp_file (filename, always_delete, fail_delete)
2041 const char *filename;
2045 char *const name = xstrdup (filename);
2049 struct temp_file *temp;
2050 for (temp = always_delete_queue; temp; temp = temp->next)
2051 if (! strcmp (name, temp->name))
2054 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
2055 temp->next = always_delete_queue;
2057 always_delete_queue = temp;
2064 struct temp_file *temp;
2065 for (temp = failure_delete_queue; temp; temp = temp->next)
2066 if (! strcmp (name, temp->name))
2069 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
2070 temp->next = failure_delete_queue;
2072 failure_delete_queue = temp;
2078 /* Delete all the temporary files whose names we previously recorded. */
2081 delete_if_ordinary (name)
2088 printf ("Delete %s? (y or n) ", name);
2092 while ((c = getchar ()) != '\n' && c != EOF)
2095 if (i == 'y' || i == 'Y')
2097 if (stat (name, &st) >= 0 && S_ISREG (st.st_mode))
2098 if (unlink (name) < 0)
2100 perror_with_name (name);
2104 delete_temp_files ()
2106 struct temp_file *temp;
2108 for (temp = always_delete_queue; temp; temp = temp->next)
2109 delete_if_ordinary (temp->name);
2110 always_delete_queue = 0;
2113 /* Delete all the files to be deleted on error. */
2116 delete_failure_queue ()
2118 struct temp_file *temp;
2120 for (temp = failure_delete_queue; temp; temp = temp->next)
2121 delete_if_ordinary (temp->name);
2125 clear_failure_queue ()
2127 failure_delete_queue = 0;
2130 /* Build a list of search directories from PATHS.
2131 PREFIX is a string to prepend to the list.
2132 If CHECK_DIR_P is non-zero we ensure the directory exists.
2133 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2134 It is also used by the --print-search-dirs flag. */
2137 build_search_list (paths, prefix, check_dir_p)
2138 struct path_prefix *paths;
2142 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0;
2144 = (just_machine_suffix) ? strlen (just_machine_suffix) : 0;
2145 int first_time = TRUE;
2146 struct prefix_list *pprefix;
2148 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2149 obstack_1grow (&collect_obstack, '=');
2151 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next)
2153 int len = strlen (pprefix->prefix);
2157 || is_directory (pprefix->prefix, machine_suffix, 0)))
2160 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2163 obstack_grow (&collect_obstack, pprefix->prefix, len);
2164 obstack_grow (&collect_obstack, machine_suffix, suffix_len);
2167 if (just_machine_suffix
2168 && pprefix->require_machine_suffix == 2
2170 || is_directory (pprefix->prefix, just_machine_suffix, 0)))
2173 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2176 obstack_grow (&collect_obstack, pprefix->prefix, len);
2177 obstack_grow (&collect_obstack, just_machine_suffix,
2181 if (! pprefix->require_machine_suffix)
2184 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2187 obstack_grow (&collect_obstack, pprefix->prefix, len);
2191 obstack_1grow (&collect_obstack, '\0');
2192 return obstack_finish (&collect_obstack);
2195 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2199 putenv_from_prefixes (paths, env_var)
2200 struct path_prefix *paths;
2201 const char *env_var;
2203 putenv (build_search_list (paths, env_var, 1));
2208 /* FIXME: the location independence code for VMS is hairier than this,
2209 and hasn't been written. */
2211 /* Split a filename into component directories. */
2214 split_directories (name, ptr_num_dirs)
2223 /* Count the number of directories. Special case MSDOS disk names as part
2224 of the initial directory. */
2226 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2227 if (name[1] == ':' && IS_DIR_SEPARATOR (name[2]))
2232 #endif /* HAVE_DOS_BASED_FILE_SYSTEM */
2234 while ((ch = *p++) != '\0')
2236 if (IS_DIR_SEPARATOR (ch))
2239 while (IS_DIR_SEPARATOR (*p))
2244 dirs = (char **) xmalloc (sizeof (char *) * (num_dirs + 2));
2246 /* Now copy the directory parts. */
2249 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2250 if (name[1] == ':' && IS_DIR_SEPARATOR (name[2]))
2252 dirs[num_dirs++] = save_string (p, 3);
2255 #endif /* HAVE_DOS_BASED_FILE_SYSTEM */
2258 while ((ch = *p++) != '\0')
2260 if (IS_DIR_SEPARATOR (ch))
2262 while (IS_DIR_SEPARATOR (*p))
2265 dirs[num_dirs++] = save_string (q, p - q);
2271 dirs[num_dirs++] = save_string (q, p - 1 - q);
2273 dirs[num_dirs] = NULL;
2275 *ptr_num_dirs = num_dirs;
2280 /* Release storage held by split directories. */
2283 free_split_directories (dirs)
2288 while (dirs[i] != NULL)
2291 free ((char *) dirs);
2294 /* Given three strings PROGNAME, BIN_PREFIX, PREFIX, return a string that gets
2295 to PREFIX starting with the directory portion of PROGNAME and a relative
2296 pathname of the difference between BIN_PREFIX and PREFIX.
2298 For example, if BIN_PREFIX is /alpha/beta/gamma/gcc/delta, PREFIX is
2299 /alpha/beta/gamma/omega/, and PROGNAME is /red/green/blue/gcc, then this
2300 function will return /red/green/blue/../omega.
2302 If no relative prefix can be found, return NULL. */
2305 make_relative_prefix (progname, bin_prefix, prefix)
2306 const char *progname;
2307 const char *bin_prefix;
2310 char **prog_dirs, **bin_dirs, **prefix_dirs;
2311 int prog_num, bin_num, prefix_num, std_loc_p;
2314 prog_dirs = split_directories (progname, &prog_num);
2315 bin_dirs = split_directories (bin_prefix, &bin_num);
2317 /* If there is no full pathname, try to find the program by checking in each
2318 of the directories specified in the PATH environment variable. */
2323 GET_ENV_PATH_LIST (temp, "PATH");
2326 char *startp, *endp, *nstore;
2327 size_t prefixlen = strlen (temp) + 1;
2331 nstore = (char *) alloca (prefixlen + strlen (progname) + 1);
2333 startp = endp = temp;
2336 if (*endp == PATH_SEPARATOR || *endp == 0)
2341 nstore[1] = DIR_SEPARATOR;
2346 strncpy (nstore, startp, endp - startp);
2347 if (! IS_DIR_SEPARATOR (endp[-1]))
2349 nstore[endp - startp] = DIR_SEPARATOR;
2350 nstore[endp - startp + 1] = 0;
2353 nstore[endp - startp] = 0;
2355 strcat (nstore, progname);
2356 if (! access (nstore, X_OK)
2357 #ifdef HAVE_HOST_EXECUTABLE_SUFFIX
2358 || ! access (strcat (nstore, HOST_EXECUTABLE_SUFFIX), X_OK)
2362 free_split_directories (prog_dirs);
2364 prog_dirs = split_directories (progname, &prog_num);
2370 endp = startp = endp + 1;
2378 /* Remove the program name from comparison of directory names. */
2381 /* Determine if the compiler is installed in the standard location, and if
2382 so, we don't need to specify relative directories. Also, if argv[0]
2383 doesn't contain any directory specifiers, there is not much we can do. */
2385 if (prog_num == bin_num)
2387 for (i = 0; i < bin_num; i++)
2389 if (strcmp (prog_dirs[i], bin_dirs[i]) != 0)
2393 if (prog_num <= 0 || i == bin_num)
2396 free_split_directories (prog_dirs);
2397 free_split_directories (bin_dirs);
2398 prog_dirs = bin_dirs = (char **) 0;
2403 prefix_dirs = split_directories (prefix, &prefix_num);
2405 /* Find how many directories are in common between bin_prefix & prefix. */
2406 n = (prefix_num < bin_num) ? prefix_num : bin_num;
2407 for (common = 0; common < n; common++)
2409 if (strcmp (bin_dirs[common], prefix_dirs[common]) != 0)
2413 /* If there are no common directories, there can be no relative prefix. */
2416 free_split_directories (prog_dirs);
2417 free_split_directories (bin_dirs);
2418 free_split_directories (prefix_dirs);
2422 /* Build up the pathnames in argv[0]. */
2423 for (i = 0; i < prog_num; i++)
2424 obstack_grow (&obstack, prog_dirs[i], strlen (prog_dirs[i]));
2426 /* Now build up the ..'s. */
2427 for (i = common; i < n; i++)
2429 obstack_grow (&obstack, DIR_UP, sizeof (DIR_UP) - 1);
2430 obstack_1grow (&obstack, DIR_SEPARATOR);
2433 /* Put in directories to move over to prefix. */
2434 for (i = common; i < prefix_num; i++)
2435 obstack_grow (&obstack, prefix_dirs[i], strlen (prefix_dirs[i]));
2437 free_split_directories (prog_dirs);
2438 free_split_directories (bin_dirs);
2439 free_split_directories (prefix_dirs);
2441 obstack_1grow (&obstack, '\0');
2442 return obstack_finish (&obstack);
2446 /* Check whether NAME can be accessed in MODE. This is like access,
2447 except that it never considers directories to be executable. */
2450 access_check (name, mode)
2458 if (stat (name, &st) < 0
2459 || S_ISDIR (st.st_mode))
2463 return access (name, mode);
2466 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2467 access to check permissions.
2468 Return 0 if not found, otherwise return its name, allocated with malloc. */
2471 find_a_file (pprefix, name, mode)
2472 struct path_prefix *pprefix;
2477 const char *const file_suffix =
2478 ((mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "");
2479 struct prefix_list *pl;
2480 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1;
2482 #ifdef DEFAULT_ASSEMBLER
2483 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2484 return xstrdup (DEFAULT_ASSEMBLER);
2487 #ifdef DEFAULT_LINKER
2488 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2489 return xstrdup (DEFAULT_LINKER);
2493 len += strlen (machine_suffix);
2495 temp = xmalloc (len);
2497 /* Determine the filename to execute (special case for absolute paths). */
2499 if (IS_ABSOLUTE_PATHNAME (name))
2501 if (access (name, mode) == 0)
2503 strcpy (temp, name);
2508 for (pl = pprefix->plist; pl; pl = pl->next)
2512 /* Some systems have a suffix for executable files.
2513 So try appending that first. */
2514 if (file_suffix[0] != 0)
2516 strcpy (temp, pl->prefix);
2517 strcat (temp, machine_suffix);
2518 strcat (temp, name);
2519 strcat (temp, file_suffix);
2520 if (access_check (temp, mode) == 0)
2522 if (pl->used_flag_ptr != 0)
2523 *pl->used_flag_ptr = 1;
2528 /* Now try just the name. */
2529 strcpy (temp, pl->prefix);
2530 strcat (temp, machine_suffix);
2531 strcat (temp, name);
2532 if (access_check (temp, mode) == 0)
2534 if (pl->used_flag_ptr != 0)
2535 *pl->used_flag_ptr = 1;
2540 /* Certain prefixes are tried with just the machine type,
2541 not the version. This is used for finding as, ld, etc. */
2542 if (just_machine_suffix && pl->require_machine_suffix == 2)
2544 /* Some systems have a suffix for executable files.
2545 So try appending that first. */
2546 if (file_suffix[0] != 0)
2548 strcpy (temp, pl->prefix);
2549 strcat (temp, just_machine_suffix);
2550 strcat (temp, name);
2551 strcat (temp, file_suffix);
2552 if (access_check (temp, mode) == 0)
2554 if (pl->used_flag_ptr != 0)
2555 *pl->used_flag_ptr = 1;
2560 strcpy (temp, pl->prefix);
2561 strcat (temp, just_machine_suffix);
2562 strcat (temp, name);
2563 if (access_check (temp, mode) == 0)
2565 if (pl->used_flag_ptr != 0)
2566 *pl->used_flag_ptr = 1;
2571 /* Certain prefixes can't be used without the machine suffix
2572 when the machine or version is explicitly specified. */
2573 if (! pl->require_machine_suffix)
2575 /* Some systems have a suffix for executable files.
2576 So try appending that first. */
2577 if (file_suffix[0] != 0)
2579 strcpy (temp, pl->prefix);
2580 strcat (temp, name);
2581 strcat (temp, file_suffix);
2582 if (access_check (temp, mode) == 0)
2584 if (pl->used_flag_ptr != 0)
2585 *pl->used_flag_ptr = 1;
2590 strcpy (temp, pl->prefix);
2591 strcat (temp, name);
2592 if (access_check (temp, mode) == 0)
2594 if (pl->used_flag_ptr != 0)
2595 *pl->used_flag_ptr = 1;
2605 /* Ranking of prefixes in the sort list. -B prefixes are put before
2608 enum path_prefix_priority
2610 PREFIX_PRIORITY_B_OPT,
2611 PREFIX_PRIORITY_LAST
2614 /* Add an entry for PREFIX in PLIST. The PLIST is kept in assending
2615 order according to PRIORITY. Within each PRIORITY, new entries are
2618 If WARN is nonzero, we will warn if no file is found
2619 through this prefix. WARN should point to an int
2620 which will be set to 1 if this entry is used.
2622 COMPONENT is the value to be passed to update_path.
2624 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2625 the complete value of machine_suffix.
2626 2 means try both machine_suffix and just_machine_suffix. */
2629 add_prefix (pprefix, prefix, component, priority, require_machine_suffix, warn)
2630 struct path_prefix *pprefix;
2632 const char *component;
2633 /* enum prefix_priority */ int priority;
2634 int require_machine_suffix;
2637 struct prefix_list *pl, **prev;
2640 for (prev = &pprefix->plist;
2641 (*prev) != NULL && (*prev)->priority <= priority;
2642 prev = &(*prev)->next)
2645 /* Keep track of the longest prefix */
2647 prefix = update_path (prefix, component);
2648 len = strlen (prefix);
2649 if (len > pprefix->max_len)
2650 pprefix->max_len = len;
2652 pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
2653 pl->prefix = prefix;
2654 pl->require_machine_suffix = require_machine_suffix;
2655 pl->used_flag_ptr = warn;
2656 pl->priority = priority;
2660 /* Insert after PREV */
2665 /* Execute the command specified by the arguments on the current line of spec.
2666 When using pipes, this includes several piped-together commands
2667 with `|' between them.
2669 Return 0 if successful, -1 if failed. */
2675 int n_commands; /* # of command. */
2679 const char *prog; /* program name. */
2680 const char **argv; /* vector of args. */
2681 int pid; /* pid of process for this command. */
2684 struct command *commands; /* each command buffer with above info. */
2686 /* Count # of piped commands. */
2687 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2688 if (strcmp (argbuf[i], "|") == 0)
2691 /* Get storage for each command. */
2692 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2694 /* Split argbuf into its separate piped processes,
2695 and record info about each one.
2696 Also search for the programs that are to be run. */
2698 commands[0].prog = argbuf[0]; /* first command. */
2699 commands[0].argv = &argbuf[0];
2700 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK);
2703 commands[0].argv[0] = string;
2705 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2706 if (strcmp (argbuf[i], "|") == 0)
2707 { /* each command. */
2708 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2709 fatal ("-pipe not supported");
2711 argbuf[i] = 0; /* termination of command args. */
2712 commands[n_commands].prog = argbuf[i + 1];
2713 commands[n_commands].argv = &argbuf[i + 1];
2714 string = find_a_file (&exec_prefixes, commands[n_commands].prog, X_OK);
2716 commands[n_commands].argv[0] = string;
2720 argbuf[argbuf_index] = 0;
2722 /* If -v, print what we are about to do, and maybe query. */
2726 /* For help listings, put a blank line between sub-processes. */
2727 if (print_help_list)
2728 fputc ('\n', stderr);
2730 /* Print each piped command as a separate line. */
2731 for (i = 0; i < n_commands; i++)
2733 const char *const *j;
2735 if (verbose_only_flag)
2737 for (j = commands[i].argv; *j; j++)
2740 fprintf (stderr, " \"");
2741 for (p = *j; *p; ++p)
2743 if (*p == '"' || *p == '\\' || *p == '$')
2744 fputc ('\\', stderr);
2747 fputc ('"', stderr);
2751 for (j = commands[i].argv; *j; j++)
2752 fprintf (stderr, " %s", *j);
2754 /* Print a pipe symbol after all but the last command. */
2755 if (i + 1 != n_commands)
2756 fprintf (stderr, " |");
2757 fprintf (stderr, "\n");
2760 if (verbose_only_flag != 0)
2763 notice ("\nGo ahead? (y or n) ");
2767 while (getchar () != '\n')
2770 if (i != 'y' && i != 'Y')
2775 /* Run each piped subprocess. */
2777 for (i = 0; i < n_commands; i++)
2779 char *errmsg_fmt, *errmsg_arg;
2780 const char *string = commands[i].argv[0];
2782 /* For some bizarre reason, the second argument of execvp() is
2783 char *const *, not const char *const *. */
2784 commands[i].pid = pexecute (string, (char *const *) commands[i].argv,
2785 programname, temp_filename,
2786 &errmsg_fmt, &errmsg_arg,
2787 ((i == 0 ? PEXECUTE_FIRST : 0)
2788 | (i + 1 == n_commands ? PEXECUTE_LAST : 0)
2789 | (string == commands[i].prog
2790 ? PEXECUTE_SEARCH : 0)
2791 | (verbose_flag ? PEXECUTE_VERBOSE : 0)));
2793 if (commands[i].pid == -1)
2794 pfatal_pexecute (errmsg_fmt, errmsg_arg);
2796 if (string != commands[i].prog)
2797 free ((PTR) string);
2802 /* Wait for all the subprocesses to finish.
2803 We don't care what order they finish in;
2804 we know that N_COMMANDS waits will get them all.
2805 Ignore subprocesses that we don't know about,
2806 since they can be spawned by the process that exec'ed us. */
2810 #ifdef HAVE_GETRUSAGE
2812 double ut = 0.0, st = 0.0;
2815 for (i = 0; i < n_commands;)
2821 pid = pwait (commands[i].pid, &status, 0);
2825 #ifdef HAVE_GETRUSAGE
2828 /* getrusage returns the total resource usage of all children
2829 up to now. Copy the previous values into prus, get the
2830 current statistics, then take the difference. */
2833 getrusage (RUSAGE_CHILDREN, &rus);
2834 d.tv_sec = rus.ru_utime.tv_sec - prus.ru_utime.tv_sec;
2835 d.tv_usec = rus.ru_utime.tv_usec - prus.ru_utime.tv_usec;
2836 ut = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2838 d.tv_sec = rus.ru_stime.tv_sec - prus.ru_stime.tv_sec;
2839 d.tv_usec = rus.ru_stime.tv_usec - prus.ru_stime.tv_usec;
2840 st = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2844 for (j = 0; j < n_commands; j++)
2845 if (commands[j].pid == pid)
2848 if (WIFSIGNALED (status))
2851 /* SIGPIPE is a special case. It happens in -pipe mode
2852 when the compiler dies before the preprocessor is
2853 done, or the assembler dies before the compiler is
2854 done. There's generally been an error already, and
2855 this is just fallout. So don't generate another error
2856 unless we would otherwise have succeeded. */
2857 if (WTERMSIG (status) == SIGPIPE
2858 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2863 Internal error: %s (program %s)\n\
2864 Please submit a full bug report.\n\
2865 See %s for instructions.",
2866 strsignal (WTERMSIG (status)), commands[j].prog,
2871 else if (WIFEXITED (status)
2872 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2874 if (WEXITSTATUS (status) > greatest_status)
2875 greatest_status = WEXITSTATUS (status);
2878 #ifdef HAVE_GETRUSAGE
2879 if (report_times && ut + st != 0)
2880 notice ("# %s %.2f %.2f\n", commands[j].prog, ut, st);
2889 /* Find all the switches given to us
2890 and make a vector describing them.
2891 The elements of the vector are strings, one per switch given.
2892 If a switch uses following arguments, then the `part1' field
2893 is the switch itself and the `args' field
2894 is a null-terminated vector containing the following arguments.
2895 The `live_cond' field is:
2897 1 if the switch is true in a conditional spec,
2898 -1 if false (overridden by a later switch)
2899 -2 if this switch should be ignored (used in %{<S})
2900 The `validated' field is nonzero if any spec has looked at this switch;
2901 if it remains zero at the end of the run, it must be meaningless. */
2904 #define SWITCH_FALSE -1
2905 #define SWITCH_IGNORE -2
2906 #define SWITCH_LIVE 1
2913 unsigned char validated;
2914 unsigned char ordering;
2917 static struct switchstr *switches;
2919 static int n_switches;
2924 const char *language;
2927 /* Also a vector of input files specified. */
2929 static struct infile *infiles;
2933 /* This counts the number of libraries added by lang_specific_driver, so that
2934 we can tell if there were any user supplied any files or libraries. */
2936 static int added_libraries;
2938 /* And a vector of corresponding output files is made up later. */
2940 const char **outfiles;
2942 /* Used to track if none of the -B paths are used. */
2945 /* Used to track if standard path isn't used and -b or -V is specified. */
2946 static int warn_std;
2948 /* Gives value to pass as "warn" to add_prefix for standard prefixes. */
2949 static int *warn_std_ptr = 0;
2951 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2953 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2954 is true if we should look for an executable suffix. DO_OBJ
2955 is true if we should look for an object suffix. */
2958 convert_filename (name, do_exe, do_obj)
2960 int do_exe ATTRIBUTE_UNUSED;
2961 int do_obj ATTRIBUTE_UNUSED;
2963 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2971 len = strlen (name);
2973 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2974 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2975 if (do_obj && len > 2
2976 && name[len - 2] == '.'
2977 && name[len - 1] == 'o')
2979 obstack_grow (&obstack, name, len - 2);
2980 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2981 name = obstack_finish (&obstack);
2985 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2986 /* If there is no filetype, make it the executable suffix (which includes
2987 the "."). But don't get confused if we have just "-o". */
2988 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
2991 for (i = len - 1; i >= 0; i--)
2992 if (IS_DIR_SEPARATOR (name[i]))
2995 for (i++; i < len; i++)
2999 obstack_grow (&obstack, name, len);
3000 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
3001 strlen (TARGET_EXECUTABLE_SUFFIX));
3002 name = obstack_finish (&obstack);
3009 /* Display the command line switches accepted by gcc. */
3013 printf (_("Usage: %s [options] file...\n"), programname);
3014 fputs (_("Options:\n"), stdout);
3016 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
3017 fputs (_(" --help Display this information\n"), stdout);
3018 fputs (_(" --target-help Display target specific command line options\n"), stdout);
3020 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
3021 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
3022 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
3023 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
3024 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
3025 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
3026 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
3027 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
3028 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
3030 -print-multi-lib Display the mapping between command line options and\n\
3031 multiple library search directories\n"), stdout);
3032 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3033 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3034 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3035 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3036 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3037 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3038 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3039 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3040 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3041 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3042 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
3043 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
3044 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3045 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3046 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3047 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3048 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3049 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3051 -x <language> Specify the language of the following input files\n\
3052 Permissable languages include: c c++ assembler none\n\
3053 'none' means revert to the default behavior of\n\
3054 guessing the language based on the file's extension\n\
3058 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3059 passed on to the various sub-processes invoked by %s. In order to pass\n\
3060 other options on to these processes the -W<letter> options must be used.\n\
3063 /* The rest of the options are displayed by invocations of the various
3068 add_preprocessor_option (option, len)
3072 n_preprocessor_options++;
3074 if (! preprocessor_options)
3075 preprocessor_options
3076 = (char **) xmalloc (n_preprocessor_options * sizeof (char *));
3078 preprocessor_options
3079 = (char **) xrealloc (preprocessor_options,
3080 n_preprocessor_options * sizeof (char *));
3082 preprocessor_options [n_preprocessor_options - 1] =
3083 save_string (option, len);
3087 add_assembler_option (option, len)
3091 n_assembler_options++;
3093 if (! assembler_options)
3095 = (char **) xmalloc (n_assembler_options * sizeof (char *));
3098 = (char **) xrealloc (assembler_options,
3099 n_assembler_options * sizeof (char *));
3101 assembler_options [n_assembler_options - 1] = save_string (option, len);
3105 add_linker_option (option, len)
3111 if (! linker_options)
3113 = (char **) xmalloc (n_linker_options * sizeof (char *));
3116 = (char **) xrealloc (linker_options,
3117 n_linker_options * sizeof (char *));
3119 linker_options [n_linker_options - 1] = save_string (option, len);
3122 /* Create the vector `switches' and its contents.
3123 Store its length in `n_switches'. */
3126 process_command (argc, argv)
3128 const char *const *argv;
3133 const char *spec_lang = 0;
3134 int last_language_n_infiles;
3137 int lang_n_infiles = 0;
3138 #ifdef MODIFY_TARGET_NAME
3139 int is_modify_target_name;
3143 GET_ENV_PATH_LIST (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3147 added_libraries = 0;
3149 /* Figure compiler version from version string. */
3151 compiler_version = temp1 = xstrdup (version_string);
3153 for (; *temp1; ++temp1)
3162 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3163 see if we can create it from the pathname specified in argv[0]. */
3166 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3167 if (!gcc_exec_prefix)
3169 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
3170 standard_exec_prefix);
3171 if (gcc_exec_prefix)
3172 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3176 if (gcc_exec_prefix)
3178 int len = strlen (gcc_exec_prefix);
3180 if (len > (int) sizeof ("/lib/gcc-lib/") - 1
3181 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3183 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc-lib/") + 1;
3184 if (IS_DIR_SEPARATOR (*temp)
3185 && strncmp (temp + 1, "lib", 3) == 0
3186 && IS_DIR_SEPARATOR (temp[4])
3187 && strncmp (temp + 5, "gcc-lib", 7) == 0)
3188 len -= sizeof ("/lib/gcc-lib/") - 1;
3191 set_std_prefix (gcc_exec_prefix, len);
3192 add_prefix (&exec_prefixes, gcc_exec_prefix, "GCC",
3193 PREFIX_PRIORITY_LAST, 0, NULL);
3194 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3195 PREFIX_PRIORITY_LAST, 0, NULL);
3198 /* COMPILER_PATH and LIBRARY_PATH have values
3199 that are lists of directory names with colons. */
3201 GET_ENV_PATH_LIST (temp, "COMPILER_PATH");
3204 const char *startp, *endp;
3205 char *nstore = (char *) alloca (strlen (temp) + 3);
3207 startp = endp = temp;
3210 if (*endp == PATH_SEPARATOR || *endp == 0)
3212 strncpy (nstore, startp, endp - startp);
3214 strcpy (nstore, concat (".", dir_separator_str, NULL));
3215 else if (!IS_DIR_SEPARATOR (endp[-1]))
3217 nstore[endp - startp] = DIR_SEPARATOR;
3218 nstore[endp - startp + 1] = 0;
3221 nstore[endp - startp] = 0;
3222 add_prefix (&exec_prefixes, nstore, 0,
3223 PREFIX_PRIORITY_LAST, 0, NULL);
3224 add_prefix (&include_prefixes,
3225 concat (nstore, "include", NULL),
3226 0, PREFIX_PRIORITY_LAST, 0, NULL);
3229 endp = startp = endp + 1;
3236 GET_ENV_PATH_LIST (temp, LIBRARY_PATH_ENV);
3237 if (temp && *cross_compile == '0')
3239 const char *startp, *endp;
3240 char *nstore = (char *) alloca (strlen (temp) + 3);
3242 startp = endp = temp;
3245 if (*endp == PATH_SEPARATOR || *endp == 0)
3247 strncpy (nstore, startp, endp - startp);
3249 strcpy (nstore, concat (".", dir_separator_str, NULL));
3250 else if (!IS_DIR_SEPARATOR (endp[-1]))
3252 nstore[endp - startp] = DIR_SEPARATOR;
3253 nstore[endp - startp + 1] = 0;
3256 nstore[endp - startp] = 0;
3257 add_prefix (&startfile_prefixes, nstore, NULL,
3258 PREFIX_PRIORITY_LAST, 0, NULL);
3261 endp = startp = endp + 1;
3268 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3269 GET_ENV_PATH_LIST (temp, "LPATH");
3270 if (temp && *cross_compile == '0')
3272 const char *startp, *endp;
3273 char *nstore = (char *) alloca (strlen (temp) + 3);
3275 startp = endp = temp;
3278 if (*endp == PATH_SEPARATOR || *endp == 0)
3280 strncpy (nstore, startp, endp - startp);
3282 strcpy (nstore, concat (".", dir_separator_str, NULL));
3283 else if (!IS_DIR_SEPARATOR (endp[-1]))
3285 nstore[endp - startp] = DIR_SEPARATOR;
3286 nstore[endp - startp + 1] = 0;
3289 nstore[endp - startp] = 0;
3290 add_prefix (&startfile_prefixes, nstore, NULL,
3291 PREFIX_PRIORITY_LAST, 0, NULL);
3294 endp = startp = endp + 1;
3301 /* Convert new-style -- options to old-style. */
3302 translate_options (&argc, &argv);
3304 /* Do language-specific adjustment/addition of flags. */
3305 lang_specific_driver (&argc, &argv, &added_libraries);
3307 /* Scan argv twice. Here, the first time, just count how many switches
3308 there will be in their vector, and how many input files in theirs.
3309 Also parse any switches that determine the configuration name, such as -b.
3310 Here we also parse the switches that cc itself uses (e.g. -v). */
3312 for (i = 1; i < argc; i++)
3314 if (! strcmp (argv[i], "-dumpspecs"))
3316 struct spec_list *sl;
3318 for (sl = specs; sl; sl = sl->next)
3319 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3320 if (link_command_spec)
3321 printf ("*link_command:\n%s\n\n", link_command_spec);
3324 else if (! strcmp (argv[i], "-dumpversion"))
3326 printf ("%s\n", spec_version);
3329 else if (! strcmp (argv[i], "-dumpmachine"))
3331 printf ("%s\n", spec_machine);
3334 else if (strcmp (argv[i], "-fversion") == 0)
3336 /* translate_options () has turned --version into -fversion. */
3337 printf (_("%s (GCC) %s\n"), programname, version_string);
3338 fputs (_("Copyright (C) 2002 Free Software Foundation, Inc.\n"),
3340 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
3341 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
3345 else if (strcmp (argv[i], "-fhelp") == 0)
3347 /* translate_options () has turned --help into -fhelp. */
3348 print_help_list = 1;
3350 /* We will be passing a dummy file on to the sub-processes. */
3354 /* CPP driver cannot obtain switch from cc1_options. */
3356 add_preprocessor_option ("--help", 6);
3357 add_assembler_option ("--help", 6);
3358 add_linker_option ("--help", 6);
3360 else if (strcmp (argv[i], "-ftarget-help") == 0)
3362 /* translate_options() has turned --target-help into -ftarget-help. */
3363 target_help_flag = 1;
3365 /* We will be passing a dummy file on to the sub-processes. */
3369 /* CPP driver cannot obtain switch from cc1_options. */
3371 add_preprocessor_option ("--target-help", 13);
3372 add_assembler_option ("--target-help", 13);
3373 add_linker_option ("--target-help", 13);
3375 else if (! strcmp (argv[i], "-pass-exit-codes"))
3377 pass_exit_codes = 1;
3380 else if (! strcmp (argv[i], "-print-search-dirs"))
3381 print_search_dirs = 1;
3382 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3383 print_file_name = "libgcc.a";
3384 else if (! strncmp (argv[i], "-print-file-name=", 17))
3385 print_file_name = argv[i] + 17;
3386 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3387 print_prog_name = argv[i] + 17;
3388 else if (! strcmp (argv[i], "-print-multi-lib"))
3389 print_multi_lib = 1;
3390 else if (! strcmp (argv[i], "-print-multi-directory"))
3391 print_multi_directory = 1;
3392 else if (! strncmp (argv[i], "-Wa,", 4))
3395 /* Pass the rest of this option to the assembler. */
3397 /* Split the argument at commas. */
3399 for (j = 4; argv[i][j]; j++)
3400 if (argv[i][j] == ',')
3402 add_assembler_option (argv[i] + prev, j - prev);
3406 /* Record the part after the last comma. */
3407 add_assembler_option (argv[i] + prev, j - prev);
3409 else if (! strncmp (argv[i], "-Wp,", 4))
3412 /* Pass the rest of this option to the preprocessor. */
3414 /* Split the argument at commas. */
3416 for (j = 4; argv[i][j]; j++)
3417 if (argv[i][j] == ',')
3419 add_preprocessor_option (argv[i] + prev, j - prev);
3423 /* Record the part after the last comma. */
3424 add_preprocessor_option (argv[i] + prev, j - prev);
3426 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3427 /* The +e options to the C++ front-end. */
3429 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3432 /* Split the argument at commas. */
3433 for (j = 3; argv[i][j]; j++)
3434 n_infiles += (argv[i][j] == ',');
3436 else if (strcmp (argv[i], "-Xlinker") == 0)
3439 fatal ("argument to `-Xlinker' is missing");
3444 else if (strcmp (argv[i], "-l") == 0)
3447 fatal ("argument to `-l' is missing");
3452 else if (strncmp (argv[i], "-l", 2) == 0)
3454 else if (strcmp (argv[i], "-save-temps") == 0)
3456 save_temps_flag = 1;
3459 else if (strcmp (argv[i], "-specs") == 0)
3461 struct user_specs *user = (struct user_specs *)
3462 xmalloc (sizeof (struct user_specs));
3464 fatal ("argument to `-specs' is missing");
3466 user->next = (struct user_specs *) 0;
3467 user->filename = argv[i];
3468 if (user_specs_tail)
3469 user_specs_tail->next = user;
3471 user_specs_head = user;
3472 user_specs_tail = user;
3474 else if (strncmp (argv[i], "-specs=", 7) == 0)
3476 struct user_specs *user = (struct user_specs *)
3477 xmalloc (sizeof (struct user_specs));
3478 if (strlen (argv[i]) == 7)
3479 fatal ("argument to `-specs=' is missing");
3481 user->next = (struct user_specs *) 0;
3482 user->filename = argv[i] + 7;
3483 if (user_specs_tail)
3484 user_specs_tail->next = user;
3486 user_specs_head = user;
3487 user_specs_tail = user;
3489 else if (strcmp (argv[i], "-time") == 0)
3491 else if (strcmp (argv[i], "-###") == 0)
3493 /* This is similar to -v except that there is no execution
3494 of the commands and the echoed arguments are quoted. It
3495 is intended for use in shell scripts to capture the
3496 driver-generated command line. */
3497 verbose_only_flag++;
3500 else if (argv[i][0] == '-' && argv[i][1] != 0)
3502 const char *p = &argv[i][1];
3509 if (p[1] == 0 && i + 1 == argc)
3510 fatal ("argument to `-b' is missing");
3512 spec_machine = argv[++i];
3514 spec_machine = p + 1;
3516 warn_std_ptr = &warn_std;
3524 if (p[1] == 0 && i + 1 == argc)
3525 fatal ("argument to `-B' is missing");
3531 len = strlen (value);
3533 /* Catch the case where the user has forgotten to append a
3534 directory separator to the path. Note, they may be using
3535 -B to add an executable name prefix, eg "i386-elf-", in
3536 order to distinguish between multiple installations of
3537 GCC in the same directory. Hence we must check to see
3538 if appending a directory separator actually makes a
3539 valid directory name. */
3540 if (! IS_DIR_SEPARATOR (value [len - 1])
3541 && is_directory (value, "", 0))
3543 char *tmp = xmalloc (len + 2);
3544 strcpy (tmp, value);
3545 tmp[len] = DIR_SEPARATOR;
3550 /* As a kludge, if the arg is "[foo/]stageN/", just
3551 add "[foo/]include" to the include prefix. */
3554 && (IS_DIR_SEPARATOR (value[len - 8]))))
3555 && strncmp (value + len - 7, "stage", 5) == 0
3556 && ISDIGIT (value[len - 2])
3557 && (IS_DIR_SEPARATOR (value[len - 1])))
3560 add_prefix (&include_prefixes, "include", NULL,
3561 PREFIX_PRIORITY_B_OPT, 0, NULL);
3564 char * string = xmalloc (len + 1);
3566 strncpy (string, value, len - 7);
3567 strcpy (string + len - 7, "include");
3568 add_prefix (&include_prefixes, string, NULL,
3569 PREFIX_PRIORITY_B_OPT, 0, NULL);
3573 add_prefix (&exec_prefixes, value, NULL,
3574 PREFIX_PRIORITY_B_OPT, 0, &warn_B);
3575 add_prefix (&startfile_prefixes, value, NULL,
3576 PREFIX_PRIORITY_B_OPT, 0, &warn_B);
3577 add_prefix (&include_prefixes, concat (value, "include", NULL),
3578 NULL, PREFIX_PRIORITY_B_OPT, 0, NULL);
3583 case 'v': /* Print our subcommands and print versions. */
3585 /* If they do anything other than exactly `-v', don't set
3586 verbose_flag; rather, continue on to give the error. */
3594 if (p[1] == 0 && i + 1 == argc)
3595 fatal ("argument to `-V' is missing");
3597 spec_version = argv[++i];
3599 spec_version = p + 1;
3600 compiler_version = spec_version;
3601 warn_std_ptr = &warn_std;
3603 /* Validate the version number. Use the same checks
3604 done when inserting it into a spec.
3606 The format of the version string is
3607 ([^0-9]*-)?[0-9]+[.][0-9]+([.][0-9]+)?([- ].*)? */
3609 const char *v = compiler_version;
3611 /* Ignore leading non-digits. i.e. "foo-" in "foo-2.7.2". */
3612 while (! ISDIGIT (*v))
3615 if (v > compiler_version && v[-1] != '-')
3616 fatal ("invalid version number format");
3618 /* Set V after the first period. */
3619 while (ISDIGIT (*v))
3623 fatal ("invalid version number format");
3626 while (ISDIGIT (*v))
3629 if (*v != 0 && *v != ' ' && *v != '.' && *v != '-')
3630 fatal ("invalid version number format");
3646 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3651 /* Forward scan, just in case -S or -c is specified
3658 if (argv[j][0] == '-')
3660 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
3666 else if ((skip = SWITCH_TAKES_ARG (argv[j][1])))
3667 j += skip - (argv[j][2] != 0);
3668 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1)))
3675 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3677 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0);
3679 argv[i] = convert_filename (argv[i], ! have_c, 0);
3686 #ifdef MODIFY_TARGET_NAME
3687 is_modify_target_name = 0;
3690 j < sizeof modify_target / sizeof modify_target[0]; j++)
3691 if (! strcmp (argv[i], modify_target[j].sw))
3694 = (char *) xmalloc (strlen (modify_target[j].str)
3695 + strlen (spec_machine));
3698 int made_addition = 0;
3700 is_modify_target_name = 1;
3701 for (p = spec_machine, q = new_name; *p != 0; )
3703 if (modify_target[j].add_del == DELETE
3704 && (! strncmp (q, modify_target[j].str,
3705 strlen (modify_target[j].str))))
3706 p += strlen (modify_target[j].str);
3707 else if (modify_target[j].add_del == ADD
3708 && ! made_addition && *p == '-')
3710 for (r = modify_target[j].str; *r != 0; )
3718 spec_machine = new_name;
3721 if (is_modify_target_name)
3727 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
3728 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
3729 else if (WORD_SWITCH_TAKES_ARG (p))
3730 i += WORD_SWITCH_TAKES_ARG (p);
3740 if (have_c && have_o && lang_n_infiles > 1)
3741 fatal ("cannot specify -o with -c or -S and multiple compilations");
3743 /* Set up the search paths before we go looking for config files. */
3745 /* These come before the md prefixes so that we will find gcc's subcommands
3746 (such as cpp) rather than those of the host system. */
3747 /* Use 2 as fourth arg meaning try just the machine as a suffix,
3748 as well as trying the machine and the version. */
3750 add_prefix (&exec_prefixes, standard_exec_prefix, "GCC",
3751 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3752 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3753 PREFIX_PRIORITY_LAST, 2, warn_std_ptr);
3754 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS",
3755 PREFIX_PRIORITY_LAST, 2, warn_std_ptr);
3758 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3759 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3760 add_prefix (&startfile_prefixes, standard_exec_prefix_1, "BINUTILS",
3761 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3763 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3764 dir_separator_str, NULL);
3766 /* If tooldir is relative, base it on exec_prefixes. A relative
3767 tooldir lets us move the installed tree as a unit.
3769 If GCC_EXEC_PREFIX is defined, then we want to add two relative
3770 directories, so that we can search both the user specified directory
3771 and the standard place. */
3773 if (!IS_ABSOLUTE_PATHNAME (tooldir_prefix))
3775 if (gcc_exec_prefix)
3777 char *gcc_exec_tooldir_prefix
3778 = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
3779 spec_version, dir_separator_str, tooldir_prefix, NULL);
3781 add_prefix (&exec_prefixes,
3782 concat (gcc_exec_tooldir_prefix, "bin",
3783 dir_separator_str, NULL),
3784 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
3785 add_prefix (&startfile_prefixes,
3786 concat (gcc_exec_tooldir_prefix, "lib",
3787 dir_separator_str, NULL),
3788 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
3791 tooldir_prefix = concat (standard_exec_prefix, spec_machine,
3792 dir_separator_str, spec_version,
3793 dir_separator_str, tooldir_prefix, NULL);
3796 add_prefix (&exec_prefixes,
3797 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3798 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
3799 add_prefix (&startfile_prefixes,
3800 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3801 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
3803 /* More prefixes are enabled in main, after we read the specs file
3804 and determine whether this is cross-compilation or not. */
3806 /* Then create the space for the vectors and scan again. */
3808 switches = ((struct switchstr *)
3809 xmalloc ((n_switches + 1) * sizeof (struct switchstr)));
3810 infiles = (struct infile *) xmalloc ((n_infiles + 1) * sizeof (struct infile));
3813 last_language_n_infiles = -1;
3815 /* This, time, copy the text of each switch and store a pointer
3816 to the copy in the vector of switches.
3817 Store all the infiles in their vector. */
3819 for (i = 1; i < argc; i++)
3821 /* Just skip the switches that were handled by the preceding loop. */
3822 #ifdef MODIFY_TARGET_NAME
3823 is_modify_target_name = 0;
3825 for (j = 0; j < sizeof modify_target / sizeof modify_target[0]; j++)
3826 if (! strcmp (argv[i], modify_target[j].sw))
3827 is_modify_target_name = 1;
3829 if (is_modify_target_name)
3833 if (! strncmp (argv[i], "-Wa,", 4))
3835 else if (! strncmp (argv[i], "-Wp,", 4))
3837 else if (! strcmp (argv[i], "-pass-exit-codes"))
3839 else if (! strcmp (argv[i], "-print-search-dirs"))
3841 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3843 else if (! strncmp (argv[i], "-print-file-name=", 17))
3845 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3847 else if (! strcmp (argv[i], "-print-multi-lib"))
3849 else if (! strcmp (argv[i], "-print-multi-directory"))
3851 else if (! strcmp (argv[i], "-ftarget-help"))
3853 else if (! strcmp (argv[i], "-fhelp"))
3855 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3857 /* Compensate for the +e options to the C++ front-end;
3858 they're there simply for cfront call-compatibility. We do
3859 some magic in default_compilers to pass them down properly.
3860 Note we deliberately start at the `+' here, to avoid passing
3861 -e0 or -e1 down into the linker. */
3862 switches[n_switches].part1 = &argv[i][0];
3863 switches[n_switches].args = 0;
3864 switches[n_switches].live_cond = SWITCH_OK;
3865 switches[n_switches].validated = 0;
3868 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3871 /* Split the argument at commas. */
3873 for (j = 4; argv[i][j]; j++)
3874 if (argv[i][j] == ',')
3876 infiles[n_infiles].language = "*";
3877 infiles[n_infiles++].name
3878 = save_string (argv[i] + prev, j - prev);
3881 /* Record the part after the last comma. */
3882 infiles[n_infiles].language = "*";
3883 infiles[n_infiles++].name = argv[i] + prev;
3885 else if (strcmp (argv[i], "-Xlinker") == 0)
3887 infiles[n_infiles].language = "*";
3888 infiles[n_infiles++].name = argv[++i];
3890 else if (strcmp (argv[i], "-l") == 0)
3891 { /* POSIX allows separation of -l and the lib arg;
3892 canonicalize by concatenating -l with its arg */
3893 infiles[n_infiles].language = "*";
3894 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL);
3896 else if (strncmp (argv[i], "-l", 2) == 0)
3898 infiles[n_infiles].language = "*";
3899 infiles[n_infiles++].name = argv[i];
3901 else if (strcmp (argv[i], "-specs") == 0)
3903 else if (strncmp (argv[i], "-specs=", 7) == 0)
3905 else if (strcmp (argv[i], "-time") == 0)
3907 else if ((save_temps_flag || report_times)
3908 && strcmp (argv[i], "-pipe") == 0)
3910 /* -save-temps overrides -pipe, so that temp files are produced */
3911 if (save_temps_flag)
3912 error ("warning: -pipe ignored because -save-temps specified");
3913 /* -time overrides -pipe because we can't get correct stats when
3914 multiple children are running at once. */
3915 else if (report_times)
3916 error ("warning: -pipe ignored because -time specified");
3918 else if (strcmp (argv[i], "-###") == 0)
3920 else if (argv[i][0] == '-' && argv[i][1] != 0)
3922 const char *p = &argv[i][1];
3927 if (p[1] == 0 && i + 1 == argc)
3928 fatal ("argument to `-x' is missing");
3930 spec_lang = argv[++i];
3933 if (! strcmp (spec_lang, "none"))
3934 /* Suppress the warning if -xnone comes after the last input
3935 file, because alternate command interfaces like g++ might
3936 find it useful to place -xnone after each input file. */
3939 last_language_n_infiles = n_infiles;
3942 switches[n_switches].part1 = p;
3943 /* Deal with option arguments in separate argv elements. */
3944 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
3945 || WORD_SWITCH_TAKES_ARG (p))
3948 int n_args = WORD_SWITCH_TAKES_ARG (p);
3952 /* Count only the option arguments in separate argv elements. */
3953 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
3955 if (i + n_args >= argc)
3956 fatal ("argument to `-%s' is missing", p);
3957 switches[n_switches].args
3958 = (const char **) xmalloc ((n_args + 1) * sizeof(const char *));
3960 switches[n_switches].args[j++] = argv[++i];
3961 /* Null-terminate the vector. */
3962 switches[n_switches].args[j] = 0;
3964 else if (strchr (switches_need_spaces, c))
3966 /* On some systems, ld cannot handle some options without
3967 a space. So split the option from its argument. */
3968 char *part1 = (char *) xmalloc (2);
3972 switches[n_switches].part1 = part1;
3973 switches[n_switches].args
3974 = (const char **) xmalloc (2 * sizeof (const char *));
3975 switches[n_switches].args[0] = xstrdup (p+1);
3976 switches[n_switches].args[1] = 0;
3979 switches[n_switches].args = 0;
3981 switches[n_switches].live_cond = SWITCH_OK;
3982 switches[n_switches].validated = 0;
3983 switches[n_switches].ordering = 0;
3984 /* These are always valid, since gcc.c itself understands it. */
3985 if (!strcmp (p, "save-temps")
3986 || !strcmp (p, "static-libgcc")
3987 || !strcmp (p, "shared-libgcc"))
3988 switches[n_switches].validated = 1;
3991 char ch = switches[n_switches].part1[0];
3992 if (ch == 'V' || ch == 'b' || ch == 'B')
3993 switches[n_switches].validated = 1;
3999 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4000 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
4003 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
4005 perror_with_name (argv[i]);
4010 infiles[n_infiles].language = spec_lang;
4011 infiles[n_infiles++].name = argv[i];
4016 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4017 error ("warning: `-x %s' after last input file has no effect", spec_lang);
4019 /* Ensure we only invoke each subprocess once. */
4020 if (target_help_flag || print_help_list)
4024 /* Create a dummy input file, so that we can pass --target-help on to
4025 the various sub-processes. */
4026 infiles[0].language = "c";
4027 infiles[0].name = "help-dummy";
4029 if (target_help_flag)
4031 switches[n_switches].part1 = "--target-help";
4032 switches[n_switches].args = 0;
4033 switches[n_switches].live_cond = SWITCH_OK;
4034 switches[n_switches].validated = 0;
4039 if (print_help_list)
4041 switches[n_switches].part1 = "--help";
4042 switches[n_switches].args = 0;
4043 switches[n_switches].live_cond = SWITCH_OK;
4044 switches[n_switches].validated = 0;
4050 switches[n_switches].part1 = 0;
4051 infiles[n_infiles].name = 0;
4054 /* Store switches not filtered out by %{<S} in spec in COLLECT_GCC_OPTIONS
4055 and place that in the environment. */
4058 set_collect_gcc_options ()
4063 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4065 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4066 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4069 for (i = 0; (int) i < n_switches; i++)
4071 const char *const *args;
4074 obstack_grow (&collect_obstack, " ", 1);
4078 /* Ignore elided switches. */
4079 if (switches[i].live_cond == SWITCH_IGNORE)
4082 obstack_grow (&collect_obstack, "'-", 2);
4083 q = switches[i].part1;
4084 while ((p = strchr (q, '\'')))
4086 obstack_grow (&collect_obstack, q, p - q);
4087 obstack_grow (&collect_obstack, "'\\''", 4);
4090 obstack_grow (&collect_obstack, q, strlen (q));
4091 obstack_grow (&collect_obstack, "'", 1);
4093 for (args = switches[i].args; args && *args; args++)
4095 obstack_grow (&collect_obstack, " '", 2);
4097 while ((p = strchr (q, '\'')))
4099 obstack_grow (&collect_obstack, q, p - q);
4100 obstack_grow (&collect_obstack, "'\\''", 4);
4103 obstack_grow (&collect_obstack, q, strlen (q));
4104 obstack_grow (&collect_obstack, "'", 1);
4107 obstack_grow (&collect_obstack, "\0", 1);
4108 putenv (obstack_finish (&collect_obstack));
4111 /* Process a spec string, accumulating and running commands. */
4113 /* These variables describe the input file name.
4114 input_file_number is the index on outfiles of this file,
4115 so that the output file name can be stored for later use by %o.
4116 input_basename is the start of the part of the input file
4117 sans all directory names, and basename_length is the number
4118 of characters starting there excluding the suffix .c or whatever. */
4120 const char *input_filename;
4121 static int input_file_number;
4122 size_t input_filename_length;
4123 static int basename_length;
4124 static int suffixed_basename_length;
4125 static const char *input_basename;
4126 static const char *input_suffix;
4127 static struct stat input_stat;
4128 static int input_stat_set;
4130 /* The compiler used to process the current input file. */
4131 static struct compiler *input_file_compiler;
4133 /* These are variables used within do_spec and do_spec_1. */
4135 /* Nonzero if an arg has been started and not yet terminated
4136 (with space, tab or newline). */
4137 static int arg_going;
4139 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4140 is a temporary file name. */
4141 static int delete_this_arg;
4143 /* Nonzero means %w has been seen; the next arg to be terminated
4144 is the output file name of this compilation. */
4145 static int this_is_output_file;
4147 /* Nonzero means %s has been seen; the next arg to be terminated
4148 is the name of a library file and we should try the standard
4149 search dirs for it. */
4150 static int this_is_library_file;
4152 /* Nonzero means that the input of this command is coming from a pipe. */
4153 static int input_from_pipe;
4155 /* Nonnull means substitute this for any suffix when outputting a switches
4157 static const char *suffix_subst;
4159 /* Process the spec SPEC and run the commands specified therein.
4160 Returns 0 if the spec is successfully processed; -1 if failed. */
4170 delete_this_arg = 0;
4171 this_is_output_file = 0;
4172 this_is_library_file = 0;
4173 input_from_pipe = 0;
4174 suffix_subst = NULL;
4176 value = do_spec_1 (spec, 0, NULL);
4178 /* Force out any unfinished command.
4179 If -pipe, this forces out the last command if it ended in `|'. */
4182 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4185 set_collect_gcc_options ();
4187 if (argbuf_index > 0)
4194 /* Process the sub-spec SPEC as a portion of a larger spec.
4195 This is like processing a whole spec except that we do
4196 not initialize at the beginning and we do not supply a
4197 newline by default at the end.
4198 INSWITCH nonzero means don't process %-sequences in SPEC;
4199 in this case, % is treated as an ordinary character.
4200 This is used while substituting switches.
4201 INSWITCH nonzero also causes SPC not to terminate an argument.
4203 Value is zero unless a line was finished
4204 and the command on that line reported an error. */
4207 do_spec_1 (spec, inswitch, soft_matched_part)
4210 const char *soft_matched_part;
4212 const char *p = spec;
4219 /* If substituting a switch, treat all chars like letters.
4220 Otherwise, NL, SPC, TAB and % are special. */
4221 switch (inswitch ? 'a' : c)
4224 /* End of line: finish any pending argument,
4225 then run the pending command if one has been started. */
4228 obstack_1grow (&obstack, 0);
4229 string = obstack_finish (&obstack);
4230 if (this_is_library_file)
4231 string = find_file (string);
4232 store_arg (string, delete_this_arg, this_is_output_file);
4233 if (this_is_output_file)
4234 outfiles[input_file_number] = string;
4238 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4240 for (i = 0; i < n_switches; i++)
4241 if (!strcmp (switches[i].part1, "pipe"))
4244 /* A `|' before the newline means use a pipe here,
4245 but only if -pipe was specified.
4246 Otherwise, execute now and don't pass the `|' as an arg. */
4249 input_from_pipe = 1;
4250 switches[i].validated = 1;
4257 set_collect_gcc_options ();
4259 if (argbuf_index > 0)
4265 /* Reinitialize for a new command, and for a new argument. */
4268 delete_this_arg = 0;
4269 this_is_output_file = 0;
4270 this_is_library_file = 0;
4271 input_from_pipe = 0;
4275 /* End any pending argument. */
4278 obstack_1grow (&obstack, 0);
4279 string = obstack_finish (&obstack);
4280 if (this_is_library_file)
4281 string = find_file (string);
4282 store_arg (string, delete_this_arg, this_is_output_file);
4283 if (this_is_output_file)
4284 outfiles[input_file_number] = string;
4288 obstack_1grow (&obstack, c);
4294 /* Space or tab ends an argument if one is pending. */
4297 obstack_1grow (&obstack, 0);
4298 string = obstack_finish (&obstack);
4299 if (this_is_library_file)
4300 string = find_file (string);
4301 store_arg (string, delete_this_arg, this_is_output_file);
4302 if (this_is_output_file)
4303 outfiles[input_file_number] = string;
4305 /* Reinitialize for a new argument. */
4307 delete_this_arg = 0;
4308 this_is_output_file = 0;
4309 this_is_library_file = 0;
4316 fatal ("invalid specification! Bug in cc");
4319 obstack_grow (&obstack, input_basename, basename_length);
4324 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4329 delete_this_arg = 2;
4332 /* Dump out the directories specified with LIBRARY_PATH,
4333 followed by the absolute directories
4334 that we search for startfiles. */
4337 struct prefix_list *pl = startfile_prefixes.plist;
4338 size_t bufsize = 100;
4339 char *buffer = (char *) xmalloc (bufsize);
4342 for (; pl; pl = pl->next)
4344 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4345 /* Used on systems which record the specified -L dirs
4346 and use them to search for dynamic linking. */
4347 /* Relative directories always come from -B,
4348 and it is better not to use them for searching
4349 at run time. In particular, stage1 loses. */
4350 if (!IS_ABSOLUTE_PATHNAME (pl->prefix))
4353 /* Try subdirectory if there is one. */
4354 if (multilib_dir != NULL)
4358 if (strlen (pl->prefix) + strlen (machine_suffix)
4360 bufsize = (strlen (pl->prefix)
4361 + strlen (machine_suffix)) * 2 + 1;
4362 buffer = (char *) xrealloc (buffer, bufsize);
4363 strcpy (buffer, pl->prefix);
4364 strcat (buffer, machine_suffix);
4365 if (is_directory (buffer, multilib_dir, 1))
4367 do_spec_1 ("-L", 0, NULL);
4368 #ifdef SPACE_AFTER_L_OPTION
4369 do_spec_1 (" ", 0, NULL);
4371 do_spec_1 (buffer, 1, NULL);
4372 do_spec_1 (multilib_dir, 1, NULL);
4373 /* Make this a separate argument. */
4374 do_spec_1 (" ", 0, NULL);
4377 if (!pl->require_machine_suffix)
4379 if (is_directory (pl->prefix, multilib_dir, 1))
4381 do_spec_1 ("-L", 0, NULL);
4382 #ifdef SPACE_AFTER_L_OPTION
4383 do_spec_1 (" ", 0, NULL);
4385 do_spec_1 (pl->prefix, 1, NULL);
4386 do_spec_1 (multilib_dir, 1, NULL);
4387 /* Make this a separate argument. */
4388 do_spec_1 (" ", 0, NULL);
4394 if (is_directory (pl->prefix, machine_suffix, 1))
4396 do_spec_1 ("-L", 0, NULL);
4397 #ifdef SPACE_AFTER_L_OPTION
4398 do_spec_1 (" ", 0, NULL);
4400 do_spec_1 (pl->prefix, 1, NULL);
4401 /* Remove slash from machine_suffix. */
4402 if (strlen (machine_suffix) >= bufsize)
4403 bufsize = strlen (machine_suffix) * 2 + 1;
4404 buffer = (char *) xrealloc (buffer, bufsize);
4405 strcpy (buffer, machine_suffix);
4406 idx = strlen (buffer);
4407 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4408 buffer[idx - 1] = 0;
4409 do_spec_1 (buffer, 1, NULL);
4410 /* Make this a separate argument. */
4411 do_spec_1 (" ", 0, NULL);
4414 if (!pl->require_machine_suffix)
4416 if (is_directory (pl->prefix, "", 1))
4418 do_spec_1 ("-L", 0, NULL);
4419 #ifdef SPACE_AFTER_L_OPTION
4420 do_spec_1 (" ", 0, NULL);
4422 /* Remove slash from pl->prefix. */
4423 if (strlen (pl->prefix) >= bufsize)
4424 bufsize = strlen (pl->prefix) * 2 + 1;
4425 buffer = (char *) xrealloc (buffer, bufsize);
4426 strcpy (buffer, pl->prefix);
4427 idx = strlen (buffer);
4428 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4429 buffer[idx - 1] = 0;
4430 do_spec_1 (buffer, 1, NULL);
4431 /* Make this a separate argument. */
4432 do_spec_1 (" ", 0, NULL);
4441 /* %efoo means report an error with `foo' as error message
4442 and don't execute any more commands for this file. */
4446 while (*p != 0 && *p != '\n')
4448 buf = (char *) alloca (p - q + 1);
4449 strncpy (buf, q, p - q);
4456 /* %nfoo means report an notice with `foo' on stderr. */
4460 while (*p != 0 && *p != '\n')
4462 buf = (char *) alloca (p - q + 1);
4463 strncpy (buf, q, p - q);
4465 notice ("%s\n", buf);
4475 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is defined,
4476 and it is not a directory, and it is writable, use it.
4477 Otherwise, fall through and treat this like any other
4480 if ((!save_temps_flag)
4481 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4482 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4484 obstack_grow (&obstack, HOST_BIT_BUCKET,
4485 strlen (HOST_BIT_BUCKET));
4486 delete_this_arg = 0;
4495 struct temp_name *t;
4497 const char *suffix = p;
4498 char *saved_suffix = NULL;
4500 while (*p == '.' || ISALPHA ((unsigned char) *p))
4502 suffix_length = p - suffix;
4503 if (p[0] == '%' && p[1] == 'O')
4506 /* We don't support extra suffix characters after %O. */
4507 if (*p == '.' || ISALPHA ((unsigned char) *p))
4509 if (suffix_length == 0)
4510 suffix = TARGET_OBJECT_SUFFIX;
4514 = (char *) xmalloc (suffix_length
4515 + strlen (TARGET_OBJECT_SUFFIX));
4516 strncpy (saved_suffix, suffix, suffix_length);
4517 strcpy (saved_suffix + suffix_length,
4518 TARGET_OBJECT_SUFFIX);
4520 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4523 /* If the input_filename has the same suffix specified
4524 for the %g, %u, or %U, and -save-temps is specified,
4525 we could end up using that file as an intermediate
4526 thus clobbering the user's source file (.e.g.,
4527 gcc -save-temps foo.s would clobber foo.s with the
4528 output of cpp0). So check for this condition and
4529 generate a temp file as the intermediate. */
4531 if (save_temps_flag)
4533 temp_filename_length = basename_length + suffix_length;
4534 temp_filename = alloca (temp_filename_length + 1);
4535 strncpy ((char *) temp_filename, input_basename, basename_length);
4536 strncpy ((char *) temp_filename + basename_length, suffix,
4538 *((char *) temp_filename + temp_filename_length) = '\0';
4539 if (strcmp (temp_filename, input_filename) != 0)
4541 struct stat st_temp;
4543 /* Note, set_input() resets input_stat_set to 0. */
4544 if (input_stat_set == 0)
4546 input_stat_set = stat (input_filename, &input_stat);
4547 if (input_stat_set >= 0)
4551 /* If we have the stat for the input_filename
4552 and we can do the stat for the temp_filename
4553 then the they could still refer to the same
4554 file if st_dev/st_ino's are the same. */
4556 if (input_stat_set != 1
4557 || stat (temp_filename, &st_temp) < 0
4558 || input_stat.st_dev != st_temp.st_dev
4559 || input_stat.st_ino != st_temp.st_ino)
4561 temp_filename = save_string (temp_filename,
4562 temp_filename_length + 1);
4563 obstack_grow (&obstack, temp_filename,
4564 temp_filename_length);
4571 /* See if we already have an association of %g/%u/%U and
4573 for (t = temp_names; t; t = t->next)
4574 if (t->length == suffix_length
4575 && strncmp (t->suffix, suffix, suffix_length) == 0
4576 && t->unique == (c != 'g'))
4579 /* Make a new association if needed. %u and %j
4581 if (t == 0 || c == 'u' || c == 'j')
4585 t = (struct temp_name *) xmalloc (sizeof (struct temp_name));
4586 t->next = temp_names;
4589 t->length = suffix_length;
4592 t->suffix = saved_suffix;
4593 saved_suffix = NULL;
4596 t->suffix = save_string (suffix, suffix_length);
4597 t->unique = (c != 'g');
4598 temp_filename = make_temp_file (t->suffix);
4599 temp_filename_length = strlen (temp_filename);
4600 t->filename = temp_filename;
4601 t->filename_length = temp_filename_length;
4605 free (saved_suffix);
4607 obstack_grow (&obstack, t->filename, t->filename_length);
4608 delete_this_arg = 1;
4614 obstack_grow (&obstack, input_filename, input_filename_length);
4620 struct prefix_list *pl = include_prefixes.plist;
4622 if (gcc_exec_prefix)
4624 do_spec_1 ("-iprefix", 1, NULL);
4625 /* Make this a separate argument. */
4626 do_spec_1 (" ", 0, NULL);
4627 do_spec_1 (gcc_exec_prefix, 1, NULL);
4628 do_spec_1 (" ", 0, NULL);
4631 for (; pl; pl = pl->next)
4633 do_spec_1 ("-isystem", 1, NULL);
4634 /* Make this a separate argument. */
4635 do_spec_1 (" ", 0, NULL);
4636 do_spec_1 (pl->prefix, 1, NULL);
4637 do_spec_1 (" ", 0, NULL);
4644 int max = n_infiles;
4645 max += lang_specific_extra_outfiles;
4647 for (i = 0; i < max; i++)
4649 store_arg (outfiles[i], 0, 0);
4654 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4659 this_is_library_file = 1;
4663 this_is_output_file = 1;
4668 int cur_index = argbuf_index;
4669 /* Handle the {...} following the %W. */
4672 p = handle_braces (p + 1);
4675 /* If any args were output, mark the last one for deletion
4677 if (argbuf_index != cur_index)
4678 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
4682 /* %x{OPTION} records OPTION for %X to output. */
4688 /* Skip past the option value and make a copy. */
4693 string = save_string (p1 + 1, p - p1 - 2);
4695 /* See if we already recorded this option. */
4696 for (i = 0; i < n_linker_options; i++)
4697 if (! strcmp (string, linker_options[i]))
4703 /* This option is new; add it. */
4704 add_linker_option (string, strlen (string));
4708 /* Dump out the options accumulated previously using %x. */
4710 for (i = 0; i < n_linker_options; i++)
4712 do_spec_1 (linker_options[i], 1, NULL);
4713 /* Make each accumulated option a separate argument. */
4714 do_spec_1 (" ", 0, NULL);
4718 /* Dump out the options accumulated previously using -Wa,. */
4720 for (i = 0; i < n_assembler_options; i++)
4722 do_spec_1 (assembler_options[i], 1, NULL);
4723 /* Make each accumulated option a separate argument. */
4724 do_spec_1 (" ", 0, NULL);
4728 /* Dump out the options accumulated previously using -Wp,. */
4730 for (i = 0; i < n_preprocessor_options; i++)
4732 do_spec_1 (preprocessor_options[i], 1, NULL);
4733 /* Make each accumulated option a separate argument. */
4734 do_spec_1 (" ", 0, NULL);
4738 /* Here are digits and numbers that just process
4739 a certain constant string as a spec. */
4742 value = do_spec_1 (cc1_spec, 0, NULL);
4748 value = do_spec_1 (cc1plus_spec, 0, NULL);
4754 value = do_spec_1 (asm_spec, 0, NULL);
4760 value = do_spec_1 (asm_final_spec, 0, NULL);
4767 const char *const spec
4768 = (input_file_compiler->cpp_spec
4769 ? input_file_compiler->cpp_spec
4771 value = do_spec_1 (spec, 0, NULL);
4778 value = do_spec_1 (endfile_spec, 0, NULL);
4784 value = do_spec_1 (link_spec, 0, NULL);
4790 value = do_spec_1 (lib_spec, 0, NULL);
4796 value = do_spec_1 (libgcc_spec, 0, NULL);
4802 if (multilib_dir && strcmp (multilib_dir, ".") != 0)
4808 len = strlen (multilib_dir);
4809 obstack_blank (&obstack, len + 1);
4810 p = obstack_next_free (&obstack) - (len + 1);
4813 for (q = multilib_dir; *q ; ++q, ++p)
4814 *p = (IS_DIR_SEPARATOR (*q) ? '_' : *q);
4820 char *x = (char *) alloca (strlen (cpp_predefines) + 1);
4824 /* Copy all of the -D options in CPP_PREDEFINES into BUF. */
4828 if (! strncmp (y, "-D", 2))
4829 /* Copy the whole option. */
4830 while (*y && *y != ' ' && *y != '\t')
4832 else if (*y == ' ' || *y == '\t')
4833 /* Copy whitespace to the result. */
4835 /* Don't copy other options. */
4842 value = do_spec_1 (buf, 0, NULL);
4850 char *x = (char *) alloca (strlen (cpp_predefines) * 4 + 1);
4854 /* Copy all of CPP_PREDEFINES into BUF,
4855 but force them all into the reserved name space if they
4856 aren't already there. The reserved name space is all
4857 identifiers beginning with two underscores or with one
4858 underscore and a capital letter. We do the forcing by
4859 adding up to two underscores to the beginning and end
4860 of each symbol. e.g. mips, _mips, mips_, and _mips_ all
4865 if (! strncmp (y, "-D", 2))
4874 && ! ISUPPER ((unsigned char) *(y + 1))))
4876 /* Stick __ at front of macro name. */
4880 /* Arrange to stick __ at the end as well. */
4884 /* Copy the macro name. */
4885 while (*y && *y != '=' && *y != ' ' && *y != '\t')
4898 /* Copy the value given, if any. */
4899 while (*y && *y != ' ' && *y != '\t')
4902 else if (*y == ' ' || *y == '\t')
4903 /* Copy whitespace to the result. */
4905 /* Don't copy -A options */
4911 /* Copy all of CPP_PREDEFINES into BUF,
4912 but put __ after every -D. */
4916 if (! strncmp (y, "-D", 2))
4922 && ! ISUPPER ((unsigned char) *(y + 1))))
4924 /* Stick -D__ at front of macro name. */
4931 /* Copy the macro name. */
4932 while (*y && *y != '=' && *y != ' ' && *y != '\t')
4935 /* Copy the value given, if any. */
4936 while (*y && *y != ' ' && *y != '\t')
4941 /* Do not copy this macro - we have just done it before */
4942 while (*y && *y != ' ' && *y != '\t')
4946 else if (*y == ' ' || *y == '\t')
4947 /* Copy whitespace to the result. */
4949 /* Don't copy -A options. */
4955 /* Copy all of the -A options in CPP_PREDEFINES into BUF. */
4959 if (! strncmp (y, "-A", 2))
4960 /* Copy the whole option. */
4961 while (*y && *y != ' ' && *y != '\t')
4963 else if (*y == ' ' || *y == '\t')
4964 /* Copy whitespace to the result. */
4966 /* Don't copy other options. */
4973 value = do_spec_1 (buf, 0, NULL);
4980 value = do_spec_1 (startfile_spec, 0, NULL);
4985 /* Here we define characters other than letters and digits. */
4988 p = handle_braces (p);
4994 obstack_1grow (&obstack, '%');
5001 while (p[len] && p[len] != ' ' && p[len] != '%')
5003 suffix_subst = save_string (p - 1, len + 1);
5009 if (soft_matched_part)
5011 do_spec_1 (soft_matched_part, 1, NULL);
5012 do_spec_1 (" ", 0, NULL);
5015 /* Catch the case where a spec string contains something like
5016 '%{foo:%*}'. ie there is no * in the pattern on the left
5017 hand side of the :. */
5018 error ("spec failure: '%%*' has not been initialized by pattern match");
5021 /* Process a string found as the value of a spec given by name.
5022 This feature allows individual machine descriptions
5023 to add and use their own specs.
5024 %[...] modifies -D options the way %P does;
5025 %(...) uses the spec unmodified. */
5027 error ("warning: use of obsolete %%[ operator in specs");
5030 const char *name = p;
5031 struct spec_list *sl;
5034 /* The string after the S/P is the name of a spec that is to be
5036 while (*p && *p != ')' && *p != ']')
5039 /* See if it's in the list. */
5040 for (len = p - name, sl = specs; sl; sl = sl->next)
5041 if (sl->name_len == len && !strncmp (sl->name, name, len))
5043 name = *(sl->ptr_spec);
5045 notice ("Processing spec %c%s%c, which is '%s'\n",
5046 c, sl->name, (c == '(') ? ')' : ']', name);
5055 value = do_spec_1 (name, 0, NULL);
5061 char *x = (char *) alloca (strlen (name) * 2 + 1);
5063 const char *y = name;
5066 /* Copy all of NAME into BUF, but put __ after
5067 every -D and at the end of each arg. */
5070 if (! strncmp (y, "-D", 2))
5081 && (*y == ' ' || *y == '\t' || *y == '='
5082 || *y == '}' || *y == 0))
5095 value = do_spec_1 (buf, 0, NULL);
5101 /* Discard the closing paren or bracket. */
5109 int c1 = *p++; /* Select first or second version number. */
5110 const char *v = compiler_version;
5112 static const char zeroc = '0';
5114 /* The format of the version string is
5115 ([^0-9]*-)?[0-9]+[.][0-9]+([.][0-9]+)?([- ].*)? */
5117 /* Ignore leading non-digits. i.e. "foo-" in "foo-2.7.2". */
5118 while (! ISDIGIT (*v))
5120 if (v > compiler_version && v[-1] != '-')
5123 /* If desired, advance to second version number. */
5126 /* Set V after the first period. */
5127 while (ISDIGIT (*v))
5134 /* If desired, advance to third version number.
5135 But don't complain if it's not present */
5138 /* Set V after the second period. */
5139 while (ISDIGIT (*v))
5141 if ((*v != 0) && (*v != ' ') && (*v != '.') && (*v != '-'))
5147 /* Set Q at the next period or at the end. */
5149 while (ISDIGIT (*q))
5151 if (*q != 0 && q > v && *q != ' ' && *q != '.' && *q != '-')
5155 /* Put that part into the command. */
5156 obstack_grow (&obstack, v, q - v);
5158 /* Default to "0" */
5159 obstack_grow (&obstack, &zeroc, 1);
5165 if (input_from_pipe)
5166 do_spec_1 ("-", 0, NULL);
5170 error ("spec failure: unrecognized spec option '%c'", c);
5176 /* Backslash: treat next character as ordinary. */
5181 /* Ordinary character: put it into the current argument. */
5182 obstack_1grow (&obstack, c);
5186 /* End of string. */
5190 /* Return 0 if we call do_spec_1 and that returns -1. */
5196 const char *filter, *body = NULL, *endbody = NULL;
5198 int true_once = 0; /* If, in %{a|b:d}, at least one of a,b was seen. */
5201 int include_blanks = 1;
5202 int elide_switch = 0;
5207 /* A '^' after the open-brace means to not give blanks before args. */
5214 /* A `|' after the open-brace means,
5215 if the test fails, output a single minus sign rather than nothing.
5216 This is used in %{|!pipe:...}. */
5223 /* A `<' after the open-brace means that the switch should be
5224 removed from the command-line. */
5230 negate = suffix = 0;
5233 /* A `!' after the open-brace negates the condition:
5234 succeed if the specified switch is not present. */
5238 /* A `.' after the open-brace means test against the current suffix. */
5247 if (elide_switch && (negate || pipe_p || suffix))
5249 /* It doesn't make sense to mix elision with other flags. We
5250 could fatal() here, but the standard seems to be to abort. */
5256 while (*p != ':' && *p != '}' && *p != '|' && *p != '&')
5259 if (*p == '|' && (pipe_p || ordered))
5264 if (*p != '}' && *p != '&')
5280 fatal ("mismatched braces in specs");
5286 body = p, endbody = p + 1;
5291 int found = (input_suffix != 0
5292 && (long) strlen (input_suffix) == (long) (p - filter)
5293 && strncmp (input_suffix, filter, p - filter) == 0);
5299 && do_spec_1 (save_string (body, endbody-body-1), 0, NULL) < 0)
5302 else if (p[-1] == '*' && (p[0] == '}' || p[0] == '&'))
5304 /* Substitute all matching switches as separate args. */
5307 for (i = 0; i < n_switches; i++)
5308 if (!strncmp (switches[i].part1, filter, p - 1 - filter)
5309 && check_live_switch (i, p - 1 - filter))
5313 switches[i].live_cond = SWITCH_IGNORE;
5314 switches[i].validated = 1;
5317 ordered = 1, switches[i].ordering = 1;
5322 /* Test for presence of the specified switch. */
5326 /* If name specified ends in *, as in {x*:...},
5327 check for %* and handle that case. */
5328 if (p[-1] == '*' && !negate)
5331 const char *r = body;
5333 /* First see whether we have %*. */
5337 if (*r == '%' && r[1] == '*')
5341 /* If we do, handle that case. */
5344 /* Substitute all matching switches as separate args.
5345 But do this by substituting for %*
5346 in the text that follows the colon. */
5348 unsigned hard_match_len = p - filter - 1;
5349 char *string = save_string (body, endbody - body - 1);
5351 for (i = 0; i < n_switches; i++)
5352 if (!strncmp (switches[i].part1, filter, hard_match_len)
5353 && check_live_switch (i, -1))
5355 do_spec_1 (string, 0, &switches[i].part1[hard_match_len]);
5356 /* Pass any arguments this switch has. */
5357 give_switch (i, 1, 1);
5358 suffix_subst = NULL;
5361 /* We didn't match. Try again. */
5368 /* If name specified ends in *, as in {x*:...},
5369 check for presence of any switch name starting with x. */
5372 for (i = 0; i < n_switches; i++)
5374 unsigned hard_match_len = p - filter - 1;
5376 if (!strncmp (switches[i].part1, filter, hard_match_len)
5377 && check_live_switch (i, hard_match_len))
5384 /* Otherwise, check for presence of exact name specified. */
5387 for (i = 0; i < n_switches; i++)
5389 if (!strncmp (switches[i].part1, filter, p - filter)
5390 && switches[i].part1[p - filter] == 0
5391 && check_live_switch (i, -1))
5399 /* If it is as desired (present for %{s...}, absent for %{!s...})
5400 then substitute either the switch or the specified
5401 conditional text. */
5402 if (present != negate)
5406 switches[i].live_cond = SWITCH_IGNORE;
5407 switches[i].validated = 1;
5409 else if (ordered || *p == '&')
5410 ordered = 1, switches[i].ordering = 1;
5412 give_switch (i, 0, include_blanks);
5414 /* Even if many alternatives are matched, only output once. */
5419 /* Here if a %{|...} conditional fails: output a minus sign,
5420 which means "standard output" or "standard input". */
5421 do_spec_1 ("-", 0, NULL);
5426 /* We didn't match; try again. */
5433 goto next_ampersand;
5439 /* Doing this set of switches later preserves their command-line
5440 ordering. This is needed for e.g. -U, -D and -A. */
5441 for (i = 0; i < n_switches; i++)
5442 if (switches[i].ordering == 1)
5444 switches[i].ordering = 0;
5445 give_switch (i, 0, include_blanks);
5448 /* Process the spec just once, regardless of match count. */
5451 if (do_spec_1 (save_string (body, endbody - body - 1),
5459 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5460 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5461 spec, or -1 if either exact match or %* is used.
5463 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5464 whose value does not begin with "no-" is obsoleted by the same value
5465 with the "no-", similarly for a switch with the "no-" prefix. */
5468 check_live_switch (switchnum, prefix_length)
5472 const char *name = switches[switchnum].part1;
5475 /* In the common case of {<at-most-one-letter>*}, a negating
5476 switch would always match, so ignore that case. We will just
5477 send the conflicting switches to the compiler phase. */
5478 if (prefix_length >= 0 && prefix_length <= 1)
5481 /* If we already processed this switch and determined if it was
5482 live or not, return our past determination. */
5483 if (switches[switchnum].live_cond != 0)
5484 return switches[switchnum].live_cond > 0;
5486 /* Now search for duplicate in a manner that depends on the name. */
5490 for (i = switchnum + 1; i < n_switches; i++)
5491 if (switches[i].part1[0] == 'O')
5493 switches[switchnum].validated = 1;
5494 switches[switchnum].live_cond = SWITCH_FALSE;
5499 case 'W': case 'f': case 'm':
5500 if (! strncmp (name + 1, "no-", 3))
5502 /* We have Xno-YYY, search for XYYY. */
5503 for (i = switchnum + 1; i < n_switches; i++)
5504 if (switches[i].part1[0] == name[0]
5505 && ! strcmp (&switches[i].part1[1], &name[4]))
5507 switches[switchnum].validated = 1;
5508 switches[switchnum].live_cond = SWITCH_FALSE;
5514 /* We have XYYY, search for Xno-YYY. */
5515 for (i = switchnum + 1; i < n_switches; i++)
5516 if (switches[i].part1[0] == name[0]
5517 && switches[i].part1[1] == 'n'
5518 && switches[i].part1[2] == 'o'
5519 && switches[i].part1[3] == '-'
5520 && !strcmp (&switches[i].part1[4], &name[1]))
5522 switches[switchnum].validated = 1;
5523 switches[switchnum].live_cond = SWITCH_FALSE;
5530 /* Otherwise the switch is live. */
5531 switches[switchnum].live_cond = SWITCH_LIVE;
5535 /* Pass a switch to the current accumulating command
5536 in the same form that we received it.
5537 SWITCHNUM identifies the switch; it is an index into
5538 the vector of switches gcc received, which is `switches'.
5539 This cannot fail since it never finishes a command line.
5541 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument.
5543 If INCLUDE_BLANKS is nonzero, then we include blanks before each argument
5547 give_switch (switchnum, omit_first_word, include_blanks)
5549 int omit_first_word;
5552 if (switches[switchnum].live_cond == SWITCH_IGNORE)
5555 if (!omit_first_word)
5557 do_spec_1 ("-", 0, NULL);
5558 do_spec_1 (switches[switchnum].part1, 1, NULL);
5561 if (switches[switchnum].args != 0)
5564 for (p = switches[switchnum].args; *p; p++)
5566 const char *arg = *p;
5569 do_spec_1 (" ", 0, NULL);
5572 unsigned length = strlen (arg);
5575 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5576 if (arg[length] == '.')
5578 ((char *)arg)[length] = 0;
5582 do_spec_1 (arg, 1, NULL);
5584 ((char *)arg)[length] = '.';
5585 do_spec_1 (suffix_subst, 1, NULL);
5588 do_spec_1 (arg, 1, NULL);
5592 do_spec_1 (" ", 0, NULL);
5593 switches[switchnum].validated = 1;
5596 /* Search for a file named NAME trying various prefixes including the
5597 user's -B prefix and some standard ones.
5598 Return the absolute file name found. If nothing is found, return NAME. */
5606 /* Try multilib_dir if it is defined. */
5607 if (multilib_dir != NULL)
5609 const char *const try = ACONCAT ((multilib_dir, dir_separator_str, name, NULL));
5611 newname = find_a_file (&startfile_prefixes, try, R_OK);
5613 /* If we don't find it in the multi library dir, then fall
5614 through and look for it in the normal places. */
5615 if (newname != NULL)
5619 newname = find_a_file (&startfile_prefixes, name, R_OK);
5620 return newname ? newname : name;
5623 /* Determine whether a directory exists. If LINKER, return 0 for
5624 certain fixed names not needed by the linker. If not LINKER, it is
5625 only important to return 0 if the host machine has a small ARG_MAX
5629 is_directory (path1, path2, linker)
5634 int len1 = strlen (path1);
5635 int len2 = strlen (path2);
5636 char *path = (char *) alloca (3 + len1 + len2);
5640 #ifndef SMALL_ARG_MAX
5645 /* Construct the path from the two parts. Ensure the string ends with "/.".
5646 The resulting path will be a directory even if the given path is a
5648 memcpy (path, path1, len1);
5649 memcpy (path + len1, path2, len2);
5650 cp = path + len1 + len2;
5651 if (!IS_DIR_SEPARATOR (cp[-1]))
5652 *cp++ = DIR_SEPARATOR;
5656 /* Exclude directories that the linker is known to search. */
5659 && strcmp (path, concat (dir_separator_str, "lib",
5660 dir_separator_str, ".", NULL)) == 0)
5662 && strcmp (path, concat (dir_separator_str, "usr",
5663 dir_separator_str, "lib",
5664 dir_separator_str, ".", NULL)) == 0)))
5667 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5670 /* Set up the various global variables to indicate that we're processing
5671 the input file named FILENAME. */
5674 set_input (filename)
5675 const char *filename;
5679 input_filename = filename;
5680 input_filename_length = strlen (input_filename);
5682 input_basename = input_filename;
5683 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
5684 /* Skip drive name so 'x:foo' is handled properly. */
5685 if (input_basename[1] == ':')
5686 input_basename += 2;
5688 for (p = input_basename; *p; p++)
5689 if (IS_DIR_SEPARATOR (*p))
5690 input_basename = p + 1;
5692 /* Find a suffix starting with the last period,
5693 and set basename_length to exclude that suffix. */
5694 basename_length = strlen (input_basename);
5695 suffixed_basename_length = basename_length;
5696 p = input_basename + basename_length;
5697 while (p != input_basename && *p != '.')
5699 if (*p == '.' && p != input_basename)
5701 basename_length = p - input_basename;
5702 input_suffix = p + 1;
5707 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5708 we will need to do a stat on the input_filename. The
5709 INPUT_STAT_SET signals that the stat is needed. */
5713 /* On fatal signals, delete all the temporary files. */
5716 fatal_error (signum)
5719 signal (signum, SIG_DFL);
5720 delete_failure_queue ();
5721 delete_temp_files ();
5722 /* Get the same signal again, this time not handled,
5723 so its normal effect occurs. */
5724 kill (getpid (), signum);
5727 extern int main PARAMS ((int, const char *const *));
5732 const char *const *argv;
5736 int linker_was_run = 0;
5737 char *explicit_link_files;
5740 struct user_specs *uptr;
5742 p = argv[0] + strlen (argv[0]);
5743 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
5747 xmalloc_set_program_name (programname);
5749 #ifdef GCC_DRIVER_HOST_INITIALIZATION
5750 /* Perform host dependent initialization when needed. */
5751 GCC_DRIVER_HOST_INITIALIZATION;
5754 gcc_init_libintl ();
5756 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
5757 signal (SIGINT, fatal_error);
5759 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
5760 signal (SIGHUP, fatal_error);
5762 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
5763 signal (SIGTERM, fatal_error);
5765 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
5766 signal (SIGPIPE, fatal_error);
5769 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
5770 receive the signal. A different setting is inheritable */
5771 signal (SIGCHLD, SIG_DFL);
5775 argbuf = (const char **) xmalloc (argbuf_length * sizeof (const char *));
5777 obstack_init (&obstack);
5779 /* Build multilib_select, et. al from the separate lines that make up each
5780 multilib selection. */
5782 const char *const *q = multilib_raw;
5785 obstack_init (&multilib_obstack);
5786 while ((p = *q++) != (char *) 0)
5787 obstack_grow (&multilib_obstack, p, strlen (p));
5789 obstack_1grow (&multilib_obstack, 0);
5790 multilib_select = obstack_finish (&multilib_obstack);
5792 q = multilib_matches_raw;
5793 while ((p = *q++) != (char *) 0)
5794 obstack_grow (&multilib_obstack, p, strlen (p));
5796 obstack_1grow (&multilib_obstack, 0);
5797 multilib_matches = obstack_finish (&multilib_obstack);
5799 q = multilib_exclusions_raw;
5800 while ((p = *q++) != (char *) 0)
5801 obstack_grow (&multilib_obstack, p, strlen (p));
5803 obstack_1grow (&multilib_obstack, 0);
5804 multilib_exclusions = obstack_finish (&multilib_obstack);
5807 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
5810 obstack_1grow (&multilib_obstack, ' ');
5811 obstack_grow (&multilib_obstack,
5812 multilib_defaults_raw[i],
5813 strlen (multilib_defaults_raw[i]));
5817 obstack_1grow (&multilib_obstack, 0);
5818 multilib_defaults = obstack_finish (&multilib_obstack);
5821 /* Set up to remember the pathname of gcc and any options
5822 needed for collect. We use argv[0] instead of programname because
5823 we need the complete pathname. */
5824 obstack_init (&collect_obstack);
5825 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
5826 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
5827 putenv (obstack_finish (&collect_obstack));
5829 #ifdef INIT_ENVIRONMENT
5830 /* Set up any other necessary machine specific environment variables. */
5831 putenv (INIT_ENVIRONMENT);
5834 /* Make a table of what switches there are (switches, n_switches).
5835 Make a table of specified input files (infiles, n_infiles).
5836 Decode switches that are handled locally. */
5838 process_command (argc, argv);
5840 /* Initialize the vector of specs to just the default.
5841 This means one element containing 0s, as a terminator. */
5843 compilers = (struct compiler *) xmalloc (sizeof default_compilers);
5844 memcpy ((char *) compilers, (char *) default_compilers,
5845 sizeof default_compilers);
5846 n_compilers = n_default_compilers;
5848 /* Read specs from a file if there is one. */
5850 machine_suffix = concat (spec_machine, dir_separator_str,
5851 spec_version, dir_separator_str, NULL);
5852 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
5854 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK);
5855 /* Read the specs file unless it is a default one. */
5856 if (specs_file != 0 && strcmp (specs_file, "specs"))
5857 read_specs (specs_file, TRUE);
5861 /* We need to check standard_exec_prefix/just_machine_suffix/specs
5862 for any override of as, ld and libraries. */
5863 specs_file = (char *) alloca (strlen (standard_exec_prefix)
5864 + strlen (just_machine_suffix)
5865 + sizeof ("specs"));
5867 strcpy (specs_file, standard_exec_prefix);
5868 strcat (specs_file, just_machine_suffix);
5869 strcat (specs_file, "specs");
5870 if (access (specs_file, R_OK) == 0)
5871 read_specs (specs_file, TRUE);
5873 /* If not cross-compiling, look for startfiles in the standard places. */
5874 if (*cross_compile == '0')
5876 if (*md_exec_prefix)
5878 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
5879 PREFIX_PRIORITY_LAST, 0, NULL);
5880 add_prefix (&startfile_prefixes, md_exec_prefix, "GCC",
5881 PREFIX_PRIORITY_LAST, 0, NULL);
5884 if (*md_startfile_prefix)
5885 add_prefix (&startfile_prefixes, md_startfile_prefix, "GCC",
5886 PREFIX_PRIORITY_LAST, 0, NULL);
5888 if (*md_startfile_prefix_1)
5889 add_prefix (&startfile_prefixes, md_startfile_prefix_1, "GCC",
5890 PREFIX_PRIORITY_LAST, 0, NULL);
5892 /* If standard_startfile_prefix is relative, base it on
5893 standard_exec_prefix. This lets us move the installed tree
5894 as a unit. If GCC_EXEC_PREFIX is defined, base
5895 standard_startfile_prefix on that as well. */
5896 if (IS_ABSOLUTE_PATHNAME (standard_startfile_prefix))
5897 add_prefix (&startfile_prefixes, standard_startfile_prefix, "BINUTILS",
5898 PREFIX_PRIORITY_LAST, 0, NULL);
5901 if (gcc_exec_prefix)
5902 add_prefix (&startfile_prefixes,
5903 concat (gcc_exec_prefix, machine_suffix,
5904 standard_startfile_prefix, NULL),
5905 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
5906 add_prefix (&startfile_prefixes,
5907 concat (standard_exec_prefix,
5909 standard_startfile_prefix, NULL),
5910 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
5913 add_prefix (&startfile_prefixes, standard_startfile_prefix_1,
5914 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
5915 add_prefix (&startfile_prefixes, standard_startfile_prefix_2,
5916 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
5917 #if 0 /* Can cause surprises, and one can use -B./ instead. */
5918 add_prefix (&startfile_prefixes, "./", NULL,
5919 PREFIX_PRIORITY_LAST, 1, NULL);
5924 if (!IS_ABSOLUTE_PATHNAME (standard_startfile_prefix)
5926 add_prefix (&startfile_prefixes,
5927 concat (gcc_exec_prefix, machine_suffix,
5928 standard_startfile_prefix, NULL),
5929 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
5932 /* Process any user specified specs in the order given on the command
5934 for (uptr = user_specs_head; uptr; uptr = uptr->next)
5936 char *filename = find_a_file (&startfile_prefixes, uptr->filename, R_OK);
5937 read_specs (filename ? filename : uptr->filename, FALSE);
5940 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
5941 if (gcc_exec_prefix)
5942 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
5943 spec_version, dir_separator_str, NULL);
5945 /* Now we have the specs.
5946 Set the `valid' bits for switches that match anything in any spec. */
5948 validate_all_switches ();
5950 /* Now that we have the switches and the specs, set
5951 the subdirectory based on the options. */
5952 set_multilib_dir ();
5954 /* Warn about any switches that no pass was interested in. */
5956 for (i = 0; (int) i < n_switches; i++)
5957 if (! switches[i].validated)
5958 error ("unrecognized option `-%s'", switches[i].part1);
5960 /* Obey some of the options. */
5962 if (print_search_dirs)
5964 printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix);
5965 printf (_("programs: %s\n"), build_search_list (&exec_prefixes, "", 0));
5966 printf (_("libraries: %s\n"), build_search_list (&startfile_prefixes, "", 0));
5970 if (print_file_name)
5972 printf ("%s\n", find_file (print_file_name));
5976 if (print_prog_name)
5978 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK);
5979 printf ("%s\n", (newname ? newname : print_prog_name));
5983 if (print_multi_lib)
5985 print_multilib_info ();
5989 if (print_multi_directory)
5991 if (multilib_dir == NULL)
5994 printf ("%s\n", multilib_dir);
5998 if (target_help_flag)
6000 /* Print if any target specific options. */
6002 /* We do not exit here. Instead we have created a fake input file
6003 called 'target-dummy' which needs to be compiled, and we pass this
6004 on to the various sub-processes, along with the --target-help
6008 if (print_help_list)
6014 printf (_("\nFor bug reporting instructions, please see:\n"));
6015 printf ("%s.\n", GCCBUGURL);
6020 /* We do not exit here. Instead we have created a fake input file
6021 called 'help-dummy' which needs to be compiled, and we pass this
6022 on the various sub-processes, along with the --help switch. */
6030 notice ("Configured with: %s\n", configuration_arguments);
6032 #ifdef THREAD_MODEL_SPEC
6033 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6034 but there's no point in doing all this processing just to get
6035 thread_model back. */
6036 obstack_init (&obstack);
6037 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6038 obstack_1grow (&obstack, '\0');
6039 thrmod = obstack_finish (&obstack);
6041 thrmod = thread_model;
6044 notice ("Thread model: %s\n", thrmod);
6046 /* compiler_version is truncated at the first space when initialized
6047 from version string, so truncate version_string at the first space
6048 before comparing. */
6049 for (n = 0; version_string[n]; n++)
6050 if (version_string[n] == ' ')
6053 if (! strncmp (version_string, compiler_version, n)
6054 && compiler_version[n] == 0)
6055 notice ("gcc version %s\n", version_string);
6057 notice ("gcc driver version %s executing gcc version %s\n",
6058 version_string, compiler_version);
6064 if (n_infiles == added_libraries)
6065 fatal ("no input files");
6067 /* Make a place to record the compiler output file names
6068 that correspond to the input files. */
6071 i += lang_specific_extra_outfiles;
6072 outfiles = (const char **) xcalloc (i, sizeof (char *));
6074 /* Record which files were specified explicitly as link input. */
6076 explicit_link_files = xcalloc (1, n_infiles);
6078 for (i = 0; (int) i < n_infiles; i++)
6080 int this_file_error = 0;
6082 /* Tell do_spec what to substitute for %i. */
6084 input_file_number = i;
6085 set_input (infiles[i].name);
6087 /* Use the same thing in %o, unless cp->spec says otherwise. */
6089 outfiles[i] = input_filename;
6091 /* Figure out which compiler from the file's suffix. */
6094 = lookup_compiler (infiles[i].name, input_filename_length,
6095 infiles[i].language);
6097 if (input_file_compiler)
6099 /* Ok, we found an applicable compiler. Run its spec. */
6101 if (input_file_compiler->spec[0] == '#')
6103 error ("%s: %s compiler not installed on this system",
6104 input_filename, &input_file_compiler->spec[1]);
6105 this_file_error = 1;
6109 value = do_spec (input_file_compiler->spec);
6111 this_file_error = 1;
6115 /* If this file's name does not contain a recognized suffix,
6116 record it as explicit linker input. */
6119 explicit_link_files[i] = 1;
6121 /* Clear the delete-on-failure queue, deleting the files in it
6122 if this compilation failed. */
6124 if (this_file_error)
6126 delete_failure_queue ();
6129 /* If this compilation succeeded, don't delete those files later. */
6130 clear_failure_queue ();
6133 /* Reset the output file name to the first input file name, for use
6134 with %b in LINK_SPEC on a target that prefers not to emit a.out
6137 set_input (infiles[0].name);
6139 if (error_count == 0)
6141 /* Make sure INPUT_FILE_NUMBER points to first available open
6143 input_file_number = n_infiles;
6144 if (lang_specific_pre_link ())
6148 /* Run ld to link all the compiler output files. */
6150 if (error_count == 0)
6152 int tmp = execution_count;
6154 /* We'll use ld if we can't find collect2. */
6155 if (! strcmp (linker_name_spec, "collect2"))
6157 char *s = find_a_file (&exec_prefixes, "collect2", X_OK);
6159 linker_name_spec = "ld";
6161 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6163 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH");
6164 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV);
6166 value = do_spec (link_command_spec);
6169 linker_was_run = (tmp != execution_count);
6172 /* If options said don't run linker,
6173 complain about input files to be given to the linker. */
6175 if (! linker_was_run && error_count == 0)
6176 for (i = 0; (int) i < n_infiles; i++)
6177 if (explicit_link_files[i])
6178 error ("%s: linker input file unused because linking not done",
6181 /* Delete some or all of the temporary files we made. */
6184 delete_failure_queue ();
6185 delete_temp_files ();
6187 if (print_help_list)
6189 printf (("\nFor bug reporting instructions, please see:\n"));
6190 printf ("%s\n", GCCBUGURL);
6193 return (signal_count != 0 ? 2
6194 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
6198 /* Find the proper compilation spec for the file name NAME,
6199 whose length is LENGTH. LANGUAGE is the specified language,
6200 or 0 if this file is to be passed to the linker. */
6202 static struct compiler *
6203 lookup_compiler (name, length, language)
6206 const char *language;
6208 struct compiler *cp;
6210 /* If this was specified by the user to be a linker input, indicate that. */
6211 if (language != 0 && language[0] == '*')
6214 /* Otherwise, look for the language, if one is spec'd. */
6217 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6218 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6221 error ("language %s not recognized", language);
6225 /* Look for a suffix. */
6226 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6228 if (/* The suffix `-' matches only the file name `-'. */
6229 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6230 || (strlen (cp->suffix) < length
6231 /* See if the suffix matches the end of NAME. */
6232 && !strcmp (cp->suffix,
6233 name + length - strlen (cp->suffix))
6238 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6239 /* look again, but case-insensitively this time. */
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))
6249 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6250 && !strcasecmp (cp->suffix,
6251 name + length - strlen (cp->suffix)))
6257 if (cp >= compilers)
6259 if (cp->spec[0] != '@')
6260 /* A non-alias entry: return it. */
6263 /* An alias entry maps a suffix to a language.
6264 Search for the language; pass 0 for NAME and LENGTH
6265 to avoid infinite recursion if language not found. */
6266 return lookup_compiler (NULL, 0, cp->spec + 1);
6272 save_string (s, len)
6276 char *result = xmalloc (len + 1);
6278 memcpy (result, s, len);
6284 pfatal_with_name (name)
6287 perror_with_name (name);
6288 delete_temp_files ();
6293 perror_with_name (name)
6296 error ("%s: %s", name, xstrerror (errno));
6300 pfatal_pexecute (errmsg_fmt, errmsg_arg)
6301 const char *errmsg_fmt;
6302 const char *errmsg_arg;
6306 int save_errno = errno;
6308 /* Space for trailing '\0' is in %s. */
6309 char *msg = xmalloc (strlen (errmsg_fmt) + strlen (errmsg_arg));
6310 sprintf (msg, errmsg_fmt, errmsg_arg);
6316 pfatal_with_name (errmsg_fmt);
6319 /* Output an error message and exit */
6324 fatal ("internal gcc abort");
6327 /* Output an error message and exit */
6330 fatal VPARAMS ((const char *msgid, ...))
6332 VA_OPEN (ap, msgid);
6333 VA_FIXEDARG (ap, const char *, msgid);
6335 fprintf (stderr, "%s: ", programname);
6336 vfprintf (stderr, _(msgid), ap);
6338 fprintf (stderr, "\n");
6339 delete_temp_files ();
6344 error VPARAMS ((const char *msgid, ...))
6346 VA_OPEN (ap, msgid);
6347 VA_FIXEDARG (ap, const char *, msgid);
6349 fprintf (stderr, "%s: ", programname);
6350 vfprintf (stderr, _(msgid), ap);
6353 fprintf (stderr, "\n");
6357 notice VPARAMS ((const char *msgid, ...))
6359 VA_OPEN (ap, msgid);
6360 VA_FIXEDARG (ap, const char *, msgid);
6362 vfprintf (stderr, _(msgid), ap);
6367 validate_all_switches ()
6369 struct compiler *comp;
6372 struct spec_list *spec;
6374 for (comp = compilers; comp->spec; comp++)
6378 if (c == '%' && *p == '{')
6379 /* We have a switch spec. */
6380 validate_switches (p + 1);
6383 /* Look through the linked list of specs read from the specs file. */
6384 for (spec = specs; spec; spec = spec->next)
6386 p = *(spec->ptr_spec);
6388 if (c == '%' && *p == '{')
6389 /* We have a switch spec. */
6390 validate_switches (p + 1);
6393 p = link_command_spec;
6395 if (c == '%' && *p == '{')
6396 /* We have a switch spec. */
6397 validate_switches (p + 1);
6400 /* Look at the switch-name that comes after START
6401 and mark as valid all supplied switches that match it. */
6404 validate_switches (start)
6407 const char *p = start;
6424 while (*p != ':' && *p != '}' && *p != '|' && *p != '&')
6429 else if (p[-1] == '*')
6431 /* Mark all matching switches as valid. */
6432 for (i = 0; i < n_switches; i++)
6433 if (!strncmp (switches[i].part1, filter, p - filter - 1))
6434 switches[i].validated = 1;
6438 /* Mark an exact matching switch as valid. */
6439 for (i = 0; i < n_switches; i++)
6441 if (!strncmp (switches[i].part1, filter, p - filter)
6442 && switches[i].part1[p - filter] == 0)
6443 switches[i].validated = 1;
6447 if (*p++ == '|' || p[-1] == '&')
6451 /* Check whether a particular argument was used. The first time we
6452 canonicalize the switches to keep only the ones we care about. */
6462 const char *replace;
6467 static struct mswitchstr *mswitches;
6468 static int n_mswitches;
6473 struct mswitchstr *matches;
6477 /* Break multilib_matches into the component strings of string
6478 and replacement string. */
6479 for (q = multilib_matches; *q != '\0'; q++)
6484 (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
6486 q = multilib_matches;
6496 matches[i].len = q - matches[i].str;
6498 matches[i].replace = ++q;
6499 while (*q != ';' && *q != '\0')
6505 matches[i].rep_len = q - matches[i].replace;
6511 /* Now build a list of the replacement string for switches that we care
6512 about. Make sure we allocate at least one entry. This prevents
6513 xmalloc from calling fatal, and prevents us from re-executing this
6516 = (struct mswitchstr *) xmalloc ((sizeof (struct mswitchstr))
6517 * (n_switches ? n_switches : 1));
6518 for (i = 0; i < n_switches; i++)
6520 int xlen = strlen (switches[i].part1);
6521 for (j = 0; j < cnt; j++)
6522 if (xlen == matches[j].len
6523 && ! strncmp (switches[i].part1, matches[j].str, xlen))
6525 mswitches[n_mswitches].str = matches[j].replace;
6526 mswitches[n_mswitches].len = matches[j].rep_len;
6527 mswitches[n_mswitches].replace = (char *) 0;
6528 mswitches[n_mswitches].rep_len = 0;
6535 for (i = 0; i < n_mswitches; i++)
6536 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
6543 default_arg (p, len)
6547 const char *start, *end;
6549 for (start = multilib_defaults; *start != '\0'; start = end + 1)
6551 while (*start == ' ' || *start == '\t')
6557 for (end = start + 1; *end != ' ' && *end != '\t' && *end != '\0'; end++)
6560 if ((end - start) == len && strncmp (p, start, len) == 0)
6570 /* Work out the subdirectory to use based on the options. The format of
6571 multilib_select is a list of elements. Each element is a subdirectory
6572 name followed by a list of options followed by a semicolon. The format
6573 of multilib_exclusions is the same, but without the preceding
6574 directory. First gcc will check the exclusions, if none of the options
6575 beginning with an exclamation point are present, and all of the other
6576 options are present, then we will ignore this completely. Passing
6577 that, gcc will consider each multilib_select in turn using the same
6578 rules for matching the options. If a match is found, that subdirectory
6585 unsigned int this_path_len;
6586 const char *this_path, *this_arg;
6590 p = multilib_exclusions;
6593 /* Ignore newlines. */
6600 /* Check the arguments. */
6614 while (*p != ' ' && *p != ';')
6621 if (*this_arg != '!')
6629 ok = used_arg (this_arg, p - this_arg);
6643 p = multilib_select;
6646 /* Ignore newlines. */
6653 /* Get the initial path. */
6661 this_path_len = p - this_path;
6663 /* Check the arguments. */
6678 while (*p != ' ' && *p != ';')
6685 if (*this_arg != '!')
6693 /* If this is a default argument, we can just ignore it.
6694 This is true even if this_arg begins with '!'. Beginning
6695 with '!' does not mean that this argument is necessarily
6696 inappropriate for this library: it merely means that
6697 there is a more specific library which uses this
6698 argument. If this argument is a default, we need not
6699 consider that more specific library. */
6700 if (! default_arg (this_arg, p - this_arg))
6702 ok = used_arg (this_arg, p - this_arg);
6713 if (this_path_len != 1
6714 || this_path[0] != '.')
6716 char *new_multilib_dir = xmalloc (this_path_len + 1);
6717 strncpy (new_multilib_dir, this_path, this_path_len);
6718 new_multilib_dir[this_path_len] = '\0';
6719 multilib_dir = new_multilib_dir;
6728 /* Print out the multiple library subdirectory selection
6729 information. This prints out a series of lines. Each line looks
6730 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
6731 required. Only the desired options are printed out, the negative
6732 matches. The options are print without a leading dash. There are
6733 no spaces to make it easy to use the information in the shell.
6734 Each subdirectory is printed only once. This assumes the ordering
6735 generated by the genmultilib script. Also, we leave out ones that match
6739 print_multilib_info ()
6741 const char *p = multilib_select;
6742 const char *last_path = 0, *this_path;
6744 unsigned int last_path_len = 0;
6749 /* Ignore newlines. */
6756 /* Get the initial path. */
6765 /* Check for matches with the multilib_exclusions. We don't bother
6766 with the '!' in either list. If any of the exclusion rules match
6767 all of its options with the select rule, we skip it. */
6769 const char *e = multilib_exclusions;
6770 const char *this_arg;
6775 /* Ignore newlines. */
6782 /* Check the arguments. */
6799 while (*e != ' ' && *e != ';')
6810 int len = e - this_arg;
6817 while (*q != ' ' && *q != ';')
6824 if (! strncmp (arg, this_arg, (len < q - arg) ? q - arg : len) ||
6825 default_arg (this_arg, e - this_arg))
6855 /* If this is a duplicate, skip it. */
6856 skip = (last_path != 0 && (unsigned int) (p - this_path) == last_path_len
6857 && ! strncmp (last_path, this_path, last_path_len));
6859 last_path = this_path;
6860 last_path_len = p - this_path;
6863 /* If this directory requires any default arguments, we can skip
6864 it. We will already have printed a directory identical to
6865 this one which does not require that default argument. */
6883 while (*q != ' ' && *q != ';')
6891 && default_arg (arg, q - arg))
6906 for (p1 = last_path; p1 < p; p1++)
6925 use_arg = *p != '!';
6930 while (*p != ' ' && *p != ';')
6945 /* If there are extra options, print them now. */
6946 if (multilib_extra && *multilib_extra)
6948 int print_at = TRUE;
6951 for (q = multilib_extra; *q != '\0'; q++)