1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
22 This paragraph is here to try to keep Sun CC from dying.
23 The number of chars here seems crucial!!!! */
25 /* This program is the user interface to the C compiler and possibly to
26 other compilers. It is used because compilation is a complicated procedure
27 which involves running several programs and passing temporary files between
28 them, forwarding the users switches to those programs selectively,
29 and deleting the temporary files at the end.
31 CC recognizes how to compile each input file by suffixes in the file names.
32 Once it knows which kind of compilation to perform, the procedure for
33 compilation is specified by a string called a "spec". */
35 /* A Short Introduction to Adding a Command-Line Option.
37 Before adding a command-line option, consider if it is really
38 necessary. Each additional command-line option adds complexity and
39 is difficult to remove in subsequent versions.
41 In the following, consider adding the command-line argument
44 1. Each command-line option is specified in the specs file. The
45 notation is described below in the comment entitled "The Specs
48 2. In this file, add an entry to "option_map" equating the long
49 `--' argument version and any shorter, single letter version. Read
50 the comments in the declaration of "struct option_map" for an
51 explanation. Do not omit the first `-'.
53 3. Look in the "specs" file to determine which program or option
54 list should be given the argument, e.g., "cc1_options". Add the
55 appropriate syntax for the shorter option version to the
56 corresponding "const char *" entry in this file. Omit the first
57 `-' from the option. For example, use `-bar', rather than `--bar'.
59 4. If the argument takes an argument, e.g., `--baz argument1',
60 modify either DEFAULT_SWITCH_TAKES_ARG or
61 DEFAULT_WORD_SWITCH_TAKES_ARG in this file. Omit the first `-'
64 5. Document the option in this file's display_help(). If the
65 option is passed to a subprogram, modify its corresponding
66 function, e.g., cppinit.c:print_help() or toplev.c:display_help(),
69 6. Compile and test. Make sure that your new specs file is being
70 read. For example, use a debugger to investigate the value of
71 "specs_file" in main(). */
76 #if ! defined( SIGCHLD ) && defined( SIGCLD )
77 # define SIGCHLD SIGCLD
85 #ifdef HAVE_SYS_RESOURCE_H
86 #include <sys/resource.h>
88 #if defined (HAVE_DECL_GETRUSAGE) && !HAVE_DECL_GETRUSAGE
89 extern int getrusage PARAMS ((int, struct rusage *));
92 /* By default there is no special suffix for target executables. */
93 /* FIXME: when autoconf is fixed, remove the host check - dj */
94 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
95 #define HAVE_TARGET_EXECUTABLE_SUFFIX
97 #undef TARGET_EXECUTABLE_SUFFIX
98 #define TARGET_EXECUTABLE_SUFFIX ""
101 /* By default there is no special suffix for host executables. */
102 #ifdef HOST_EXECUTABLE_SUFFIX
103 #define HAVE_HOST_EXECUTABLE_SUFFIX
105 #define HOST_EXECUTABLE_SUFFIX ""
108 /* By default, the suffix for target object files is ".o". */
109 #ifdef TARGET_OBJECT_SUFFIX
110 #define HAVE_TARGET_OBJECT_SUFFIX
112 #define TARGET_OBJECT_SUFFIX ".o"
116 /* FIXME: the location independence code for VMS is hairier than this,
117 and hasn't been written. */
123 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
125 #define obstack_chunk_alloc xmalloc
126 #define obstack_chunk_free free
128 #ifndef GET_ENV_PATH_LIST
129 #define GET_ENV_PATH_LIST(VAR,NAME) do { (VAR) = getenv (NAME); } while (0)
132 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
133 #ifndef LIBRARY_PATH_ENV
134 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
138 #define kill(p,s) raise(s)
141 /* If a stage of compilation returns an exit status >= 1,
142 compilation of that file ceases. */
144 #define MIN_FATAL_STATUS 1
146 /* Flag set by cppspec.c to 1. */
149 /* Flag saying to pass the greatest exit code returned by a sub-process
150 to the calling program. */
151 static int pass_exit_codes;
153 /* Definition of string containing the arguments given to configure. */
154 #include "configargs.h"
156 /* Flag saying to print the directories gcc will search through looking for
157 programs, libraries, etc. */
159 static int print_search_dirs;
161 /* Flag saying to print the full filename of this file
162 as found through our usual search mechanism. */
164 static const char *print_file_name = NULL;
166 /* As print_file_name, but search for executable file. */
168 static const char *print_prog_name = NULL;
170 /* Flag saying to print the relative path we'd use to
171 find libgcc.a given the current compiler flags. */
173 static int print_multi_directory;
175 /* Flag saying to print the list of subdirectories and
176 compiler flags used to select them in a standard form. */
178 static int print_multi_lib;
180 /* Flag saying to print the command line options understood by gcc and its
183 static int print_help_list;
185 /* Flag indicating whether we should print the command and arguments */
187 static int verbose_flag;
189 /* Flag indicating whether we should ONLY print the command and
190 arguments (like verbose_flag) without executing the command.
191 Displayed arguments are quoted so that the generated command
192 line is suitable for execution. This is intended for use in
193 shell scripts to capture the driver-generated command line. */
194 static int verbose_only_flag;
196 /* Flag indicating to print target specific command line options. */
198 static int target_help_flag;
200 /* Flag indicating whether we should report subprocess execution times
201 (if this is supported by the system - see pexecute.c). */
203 static int report_times;
205 /* Nonzero means write "temp" files in source directory
206 and use the source file's name in them, and don't delete them. */
208 static int save_temps_flag;
210 /* The compiler version. */
212 static const char *compiler_version;
214 /* The target version specified with -V */
216 static const char *spec_version = DEFAULT_TARGET_VERSION;
218 /* The target machine specified with -b. */
220 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
222 /* Nonzero if cross-compiling.
223 When -b is used, the value comes from the `specs' file. */
226 static const char *cross_compile = "1";
228 static const char *cross_compile = "0";
231 #ifdef MODIFY_TARGET_NAME
233 /* Information on how to alter the target name based on a command-line
234 switch. The only case we support now is simply appending or deleting a
235 string to or from the end of the first part of the configuration name. */
237 static const struct modify_target
239 const char *const sw;
240 const enum add_del {ADD, DELETE} add_del;
241 const char *const str;
243 modify_target[] = MODIFY_TARGET_NAME;
246 /* The number of errors that have occurred; the link phase will not be
247 run if this is non-zero. */
248 static int error_count = 0;
250 /* Greatest exit code of sub-processes that has been encountered up to
252 static int greatest_status = 1;
254 /* This is the obstack which we use to allocate many strings. */
256 static struct obstack obstack;
258 /* This is the obstack to build an environment variable to pass to
259 collect2 that describes all of the relevant switches of what to
260 pass the compiler in building the list of pointers to constructors
263 static struct obstack collect_obstack;
265 /* These structs are used to collect resource usage information for
267 #ifdef HAVE_GETRUSAGE
268 static struct rusage rus, prus;
271 /* Forward declaration for prototypes. */
274 static void init_spec PARAMS ((void));
276 static char **split_directories PARAMS ((const char *, int *));
277 static void free_split_directories PARAMS ((char **));
278 static char *make_relative_prefix PARAMS ((const char *, const char *, const char *));
280 static void store_arg PARAMS ((const char *, int, int));
281 static char *load_specs PARAMS ((const char *));
282 static void read_specs PARAMS ((const char *, int));
283 static void set_spec PARAMS ((const char *, const char *));
284 static struct compiler *lookup_compiler PARAMS ((const char *, size_t, const char *));
285 static char *build_search_list PARAMS ((struct path_prefix *, const char *, int));
286 static void putenv_from_prefixes PARAMS ((struct path_prefix *, const char *));
287 static int access_check PARAMS ((const char *, int));
288 static char *find_a_file PARAMS ((struct path_prefix *, const char *, int));
289 static void add_prefix PARAMS ((struct path_prefix *, const char *,
290 const char *, int, int, int *));
291 static void translate_options PARAMS ((int *, const char *const **));
292 static char *skip_whitespace PARAMS ((char *));
293 static void delete_if_ordinary PARAMS ((const char *));
294 static void delete_temp_files PARAMS ((void));
295 static void delete_failure_queue PARAMS ((void));
296 static void clear_failure_queue PARAMS ((void));
297 static int check_live_switch PARAMS ((int, int));
298 static const char *handle_braces PARAMS ((const char *));
299 static char *save_string PARAMS ((const char *, int));
300 static void set_collect_gcc_options PARAMS ((void));
301 static int do_spec_1 PARAMS ((const char *, int, const char *));
302 static const char *find_file PARAMS ((const char *));
303 static int is_directory PARAMS ((const char *, const char *, int));
304 static void validate_switches PARAMS ((const char *));
305 static void validate_all_switches PARAMS ((void));
306 static void give_switch PARAMS ((int, int, int));
307 static int used_arg PARAMS ((const char *, int));
308 static int default_arg PARAMS ((const char *, int));
309 static void set_multilib_dir PARAMS ((void));
310 static void print_multilib_info PARAMS ((void));
311 static void perror_with_name PARAMS ((const char *));
312 static void pfatal_pexecute PARAMS ((const char *, const char *))
314 static void notice PARAMS ((const char *, ...))
316 static void display_help PARAMS ((void));
317 static void add_preprocessor_option PARAMS ((const char *, int));
318 static void add_assembler_option PARAMS ((const char *, int));
319 static void add_linker_option PARAMS ((const char *, int));
320 static void process_command PARAMS ((int, const char *const *));
321 static int execute PARAMS ((void));
322 static void clear_args PARAMS ((void));
323 static void fatal_error PARAMS ((int));
324 #ifdef ENABLE_SHARED_LIBGCC
325 static void init_gcc_specs PARAMS ((struct obstack *,
326 const char *, const char *,
329 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
330 static const char *convert_filename PARAMS ((const char *, int, int));
333 /* The Specs Language
335 Specs are strings containing lines, each of which (if not blank)
336 is made up of a program name, and arguments separated by spaces.
337 The program name must be exact and start from root, since no path
338 is searched and it is unreliable to depend on the current working directory.
339 Redirection of input or output is not supported; the subprograms must
340 accept filenames saying what files to read and write.
342 In addition, the specs can contain %-sequences to substitute variable text
343 or for conditional text. Here is a table of all defined %-sequences.
344 Note that spaces are not generated automatically around the results of
345 expanding these sequences; therefore, you can concatenate them together
346 or with constant text in a single argument.
348 %% substitute one % into the program name or argument.
349 %i substitute the name of the input file being processed.
350 %b substitute the basename of the input file being processed.
351 This is the substring up to (and not including) the last period
352 and not including the directory.
353 %B same as %b, but include the file suffix (text after the last period).
355 substitute a file name that has suffix SUFFIX and is chosen
356 once per compilation, and mark the argument a la %d. To reduce
357 exposure to denial-of-service attacks, the file name is now
358 chosen in a way that is hard to predict even when previously
359 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
360 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
361 the regexp "[.A-Za-z]*%O"; "%O" is treated exactly as if it
362 had been pre-processed. Previously, %g was simply substituted
363 with a file name chosen once per compilation, without regard
364 to any appended suffix (which was therefore treated just like
365 ordinary text), making such attacks more likely to succeed.
367 like %g, but generates a new temporary file name even if %uSUFFIX
370 substitutes the last file name generated with %uSUFFIX, generating a
371 new one if there is no such last file name. In the absence of any
372 %uSUFFIX, this is just like %gSUFFIX, except they don't share
373 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
374 would involve the generation of two distinct file names, one
375 for each `%g.s' and another for each `%U.s'. Previously, %U was
376 simply substituted with a file name chosen for the previous %u,
377 without regard to any appended suffix.
379 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
380 writable, and if save-temps is off; otherwise, substitute the name
381 of a temporary file, just like %u. This temporary file is not
382 meant for communication between processes, but rather as a junk
385 substitutes .SUFFIX for the suffixes of a matched switch's args when
386 it is subsequently output with %*. SUFFIX is terminated by the next
388 %d marks the argument containing or following the %d as a
389 temporary file name, so that that file will be deleted if CC exits
390 successfully. Unlike %g, this contributes no text to the argument.
391 %w marks the argument containing or following the %w as the
392 "output file" of this compilation. This puts the argument
393 into the sequence of arguments that %o will substitute later.
395 like %{...} but mark last argument supplied within
396 as a file to be deleted on failure.
397 %o substitutes the names of all the output files, with spaces
398 automatically placed around them. You should write spaces
399 around the %o as well or the results are undefined.
400 %o is for use in the specs for running the linker.
401 Input files whose names have no recognized suffix are not compiled
402 at all, but they are included among the output files, so they will
404 %O substitutes the suffix for object files. Note that this is
405 handled specially when it immediately follows %g, %u, or %U
406 (with or without a suffix argument) because of the need for
407 those to form complete file names. The handling is such that
408 %O is treated exactly as if it had already been substituted,
409 except that %g, %u, and %U do not currently support additional
410 SUFFIX characters following %O as they would following, for
412 %p substitutes the standard macro predefinitions for the
413 current target machine. Use this when running cpp.
414 %P like %p, but puts `__' before and after the name of each macro.
415 (Except macros that already have __.)
417 %I Substitute a -iprefix option made from GCC_EXEC_PREFIX.
418 %s current argument is the name of a library or startup file of some sort.
419 Search for that file in a standard list of directories
420 and substitute the full name found.
421 %eSTR Print STR as an error message. STR is terminated by a newline.
422 Use this when inconsistent options are detected.
423 %nSTR Print STR as an notice. STR is terminated by a newline.
424 %x{OPTION} Accumulate an option for %X.
425 %X Output the accumulated linker options specified by compilations.
426 %Y Output the accumulated assembler options specified by compilations.
427 %Z Output the accumulated preprocessor options specified by compilations.
428 %v1 Substitute the major version number of GCC.
429 (For version 2.5.3, this is 2.)
430 %v2 Substitute the minor version number of GCC.
431 (For version 2.5.3, this is 5.)
432 %v3 Substitute the patch level number of GCC.
433 (For version 2.5.3, this is 3.)
434 %a process ASM_SPEC as a spec.
435 This allows config.h to specify part of the spec for running as.
436 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
437 used here. This can be used to run a post-processor after the
438 assembler has done its job.
439 %D Dump out a -L option for each directory in startfile_prefixes.
440 If multilib_dir is set, extra entries are generated with it affixed.
441 %l process LINK_SPEC as a spec.
442 %L process LIB_SPEC as a spec.
443 %G process LIBGCC_SPEC as a spec.
444 %M output multilib_dir with directory separators replaced with "_";
445 if multilib_dir is not set or is ".", output "".
446 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
447 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
448 %C process CPP_SPEC as a spec.
449 %1 process CC1_SPEC as a spec.
450 %2 process CC1PLUS_SPEC as a spec.
451 %| output "-" if the input for the current command is coming from a pipe.
452 %* substitute the variable part of a matched option. (See below.)
453 Note that each comma in the substituted string is replaced by
455 %{S} substitutes the -S switch, if that switch was given to CC.
456 If that switch was not specified, this substitutes nothing.
457 Here S is a metasyntactic variable.
458 %{S*} substitutes all the switches specified to CC whose names start
459 with -S. This is used for -o, -I, etc; switches that take
460 arguments. CC considers `-o foo' as being one switch whose
461 name starts with `o'. %{o*} would substitute this text,
462 including the space; thus, two arguments would be generated.
463 %{^S*} likewise, but don't put a blank between a switch and any args.
464 %{S*&T*} likewise, but preserve order of S and T options (the order
465 of S and T in the spec is not significant). Can be any number
466 of ampersand-separated variables; for each the wild card is
467 optional. Useful for CPP as %{D*&U*&A*}.
468 %{S*:X} substitutes X if one or more switches whose names start with -S are
469 specified to CC. Note that the tail part of the -S option
470 (i.e. the part matched by the `*') will be substituted for each
471 occurrence of %* within X.
472 %{<S} remove all occurrences of -S from the command line.
473 Note - this option is position dependent. % commands in the
474 spec string before this option will see -S, % commands in the
475 spec string after this option will not.
476 %{S:X} substitutes X, but only if the -S switch was given to CC.
477 %{!S:X} substitutes X, but only if the -S switch was NOT given to CC.
478 %{|S:X} like %{S:X}, but if no S switch, substitute `-'.
479 %{|!S:X} like %{!S:X}, but if there is an S switch, substitute `-'.
480 %{.S:X} substitutes X, but only if processing a file with suffix S.
481 %{!.S:X} substitutes X, but only if NOT processing a file with suffix S.
482 %{S|P:X} substitutes X if either -S or -P was given to CC. This may be
483 combined with ! and . as above binding stronger than the OR.
484 %(Spec) processes a specification defined in a specs file as *Spec:
485 %[Spec] as above, but put __ around -D arguments
487 The conditional text X in a %{S:X} or %{!S:X} construct may contain
488 other nested % constructs or spaces, or even newlines. They are
489 processed as usual, as described above.
491 The -O, -f, -m, and -W switches are handled specifically in these
492 constructs. If another value of -O or the negated form of a -f, -m, or
493 -W switch is found later in the command line, the earlier switch
494 value is ignored, except with {S*} where S is just one letter; this
495 passes all matching options.
497 The character | at the beginning of the predicate text is used to indicate
498 that a command should be piped to the following command, but only if -pipe
501 Note that it is built into CC which switches take arguments and which
502 do not. You might think it would be useful to generalize this to
503 allow each compiler's spec to say which switches take arguments. But
504 this cannot be done in a consistent fashion. CC cannot even decide
505 which input files have been specified without knowing which switches
506 take arguments, and it must know which input files to compile in order
507 to tell which compilers to run.
509 CC also knows implicitly that arguments starting in `-l' are to be
510 treated as compiler output files, and passed to the linker in their
511 proper position among the other output files. */
513 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
515 /* config.h can define ASM_SPEC to provide extra args to the assembler
516 or extra switch-translations. */
521 /* config.h can define ASM_FINAL_SPEC to run a post processor after
522 the assembler has run. */
523 #ifndef ASM_FINAL_SPEC
524 #define ASM_FINAL_SPEC ""
527 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
528 or extra switch-translations. */
533 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
534 or extra switch-translations. */
539 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
540 or extra switch-translations. */
542 #define CC1PLUS_SPEC ""
545 /* config.h can define LINK_SPEC to provide extra args to the linker
546 or extra switch-translations. */
551 /* config.h can define LIB_SPEC to override the default libraries. */
553 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
556 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
559 #if defined(LINK_LIBGCC_SPECIAL) || defined(LINK_LIBGCC_SPECIAL_1)
560 /* Have gcc do the search for libgcc.a. */
561 #define LIBGCC_SPEC "libgcc.a%s"
563 #define LIBGCC_SPEC "-lgcc"
567 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
568 #ifndef STARTFILE_SPEC
569 #define STARTFILE_SPEC \
570 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
573 /* config.h can define SWITCHES_NEED_SPACES to control which options
574 require spaces between the option and the argument. */
575 #ifndef SWITCHES_NEED_SPACES
576 #define SWITCHES_NEED_SPACES ""
579 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
581 #define ENDFILE_SPEC ""
585 #define LINKER_NAME "collect2"
588 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
590 #ifndef ASM_DEBUG_SPEC
591 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
592 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
593 # define ASM_DEBUG_SPEC \
594 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
595 ? "%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}" \
596 : "%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}")
598 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
599 # define ASM_DEBUG_SPEC "%{g*:--gstabs}"
601 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
602 # define ASM_DEBUG_SPEC "%{g*:--gdwarf2}"
606 #ifndef ASM_DEBUG_SPEC
607 # define ASM_DEBUG_SPEC ""
610 /* Here is the spec for running the linker, after compiling all files. */
612 /* This is overridable by the target in case they need to specify the
613 -lgcc and -lc order specially, yet not require them to override all
614 of LINK_COMMAND_SPEC. */
615 #ifndef LINK_GCC_C_SEQUENCE_SPEC
616 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
619 /* -u* was put back because both BSD and SysV seem to support it. */
620 /* %{static:} simply prevents an error message if the target machine
621 doesn't handle -static. */
622 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
623 scripts which exist in user specified directories, or in standard
625 #ifndef LINK_COMMAND_SPEC
626 #define LINK_COMMAND_SPEC "\
627 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
628 %(linker) %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r} %{s} %{t}\
629 %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
630 %{static:} %{L*} %(link_libgcc) %o %{!nostdlib:%{!nodefaultlibs:%(link_gcc_c_sequence)}}\
631 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
634 #ifndef LINK_LIBGCC_SPEC
635 # ifdef LINK_LIBGCC_SPECIAL
636 /* Don't generate -L options for startfile prefix list. */
637 # define LINK_LIBGCC_SPEC ""
639 /* Do generate them. */
640 # define LINK_LIBGCC_SPEC "%D"
644 static const char *asm_debug = ASM_DEBUG_SPEC;
645 static const char *cpp_spec = CPP_SPEC;
646 static const char *cpp_predefines = CPP_PREDEFINES;
647 static const char *cc1_spec = CC1_SPEC;
648 static const char *cc1plus_spec = CC1PLUS_SPEC;
649 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
650 static const char *asm_spec = ASM_SPEC;
651 static const char *asm_final_spec = ASM_FINAL_SPEC;
652 static const char *link_spec = LINK_SPEC;
653 static const char *lib_spec = LIB_SPEC;
654 static const char *libgcc_spec = LIBGCC_SPEC;
655 static const char *endfile_spec = ENDFILE_SPEC;
656 static const char *startfile_spec = STARTFILE_SPEC;
657 static const char *switches_need_spaces = SWITCHES_NEED_SPACES;
658 static const char *linker_name_spec = LINKER_NAME;
659 static const char *link_command_spec = LINK_COMMAND_SPEC;
660 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
662 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
663 There should be no need to override these in target dependent files,
664 but we need to copy them to the specs file so that newer versions
665 of the GCC driver can correctly drive older tool chains with the
666 appropriate -B options. */
668 static const char *trad_capable_cpp =
669 "%{traditional|ftraditional|traditional-cpp:tradcpp0}\
670 %{!traditional:%{!ftraditional:%{!traditional-cpp:cc1 -E}}}";
672 static const char *cpp_unique_options =
673 "%{C:%{!E:%eGNU C does not support -C without using -E}}\
674 %{CC:%{!E:%eGNU C does not support -CC without using -E}}\
675 %{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*} %{P} %{$} %I\
676 %{MD:-MD %W{!o: %b.d}%W{o*:%.d%*}}\
677 %{MMD:-MMD %W{!o: %b.d}%W{o*:%.d%*}}\
678 %{M} %{MM} %W{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
679 %{!E:%{!M:%{!MM:%{MD|MMD:%{o*:-MQ %*}}}}}\
680 %{!no-gcc:-D__GNUC__=%v1 -D__GNUC_MINOR__=%v2 -D__GNUC_PATCHLEVEL__=%v3}\
681 %{!undef:%{!ansi:%{!std=*:%p}%{std=gnu*:%p}} %P} %{trigraphs}\
682 %{Os:-D__OPTIMIZE_SIZE__} %{O*:%{!O0:-D__OPTIMIZE__}}\
683 %{fno-inline|O0|!O*:-D__NO_INLINE__} %{ffast-math:-D__FAST_MATH__}\
684 %{fshort-wchar:-U__WCHAR_TYPE__ -D__WCHAR_TYPE__=short\\ unsigned\\ int}\
685 %{ffreestanding:-D__STDC_HOSTED__=0} %{fno-hosted:-D__STDC_HOSTED__=0}\
686 %{!ffreestanding:%{!fno-hosted:-D__STDC_HOSTED__=1}} %{remap}\
687 %{g3:-dD} %{H} %C %{D*&U*&A*} %{i*} %Z %i\
690 /* This contains cpp options which are common with cc1_options and are passed
691 only when preprocessing only to avoid duplication. */
692 static const char *cpp_options =
693 "%(cpp_unique_options) %{std*} %{d*} %{W*&pedantic*} %{w}\
694 %{fshow-column} %{fno-show-column}\
695 %{fsigned-char&funsigned-char}\
696 %{fleading-underscore} %{fno-leading-underscore}\
697 %{fno-operator-names} %{ftabstop=*} %{undef}";
699 /* NB: This is shared amongst all front-ends. */
700 static const char *cc1_options =
701 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
702 %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\
703 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*} %{ansi}\
704 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
705 %{Qn:-fno-ident} %{--help:--help}\
706 %{--target-help:--target-help}\
707 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
708 %{fsyntax-only:-o %j} %{-param*}";
710 static const char *asm_options =
711 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
713 static const char *invoke_as =
714 "%{!S:-o %{|!pipe:%g.s} |\n as %(asm_options) %{!pipe:%g.s} %A }";
716 /* Some compilers have limits on line lengths, and the multilib_select
717 and/or multilib_matches strings can be very long, so we build them at
719 static struct obstack multilib_obstack;
720 static const char *multilib_select;
721 static const char *multilib_matches;
722 static const char *multilib_defaults;
723 static const char *multilib_exclusions;
724 #include "multilib.h"
726 /* Check whether a particular argument is a default argument. */
728 #ifndef MULTILIB_DEFAULTS
729 #define MULTILIB_DEFAULTS { "" }
732 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
736 struct user_specs *next;
737 const char *filename;
740 static struct user_specs *user_specs_head, *user_specs_tail;
742 /* This defines which switch letters take arguments. */
744 #define DEFAULT_SWITCH_TAKES_ARG(CHAR) \
745 ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o' \
746 || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u' \
747 || (CHAR) == 'I' || (CHAR) == 'm' || (CHAR) == 'x' \
748 || (CHAR) == 'L' || (CHAR) == 'A' || (CHAR) == 'B' || (CHAR) == 'b')
750 #ifndef SWITCH_TAKES_ARG
751 #define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR)
754 /* This defines which multi-letter switches take arguments. */
756 #define DEFAULT_WORD_SWITCH_TAKES_ARG(STR) \
757 (!strcmp (STR, "Tdata") || !strcmp (STR, "Ttext") \
758 || !strcmp (STR, "Tbss") || !strcmp (STR, "include") \
759 || !strcmp (STR, "imacros") || !strcmp (STR, "aux-info") \
760 || !strcmp (STR, "idirafter") || !strcmp (STR, "iprefix") \
761 || !strcmp (STR, "iwithprefix") || !strcmp (STR, "iwithprefixbefore") \
762 || !strcmp (STR, "isystem") || !strcmp (STR, "-param") \
763 || !strcmp (STR, "specs") \
764 || !strcmp (STR, "MF") || !strcmp (STR, "MT") || !strcmp (STR, "MQ"))
766 #ifndef WORD_SWITCH_TAKES_ARG
767 #define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
770 #ifdef HAVE_TARGET_EXECUTABLE_SUFFIX
771 /* This defines which switches stop a full compilation. */
772 #define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \
773 ((CHAR) == 'c' || (CHAR) == 'S')
775 #ifndef SWITCH_CURTAILS_COMPILATION
776 #define SWITCH_CURTAILS_COMPILATION(CHAR) \
777 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR)
781 /* Record the mapping from file suffixes for compilation specs. */
785 const char *suffix; /* Use this compiler for input files
786 whose names end in this suffix. */
788 const char *spec; /* To use this compiler, run this spec. */
790 const char *cpp_spec; /* If non-NULL, substitute this spec
791 for `%C', rather than the usual
795 /* Pointer to a vector of `struct compiler' that gives the spec for
796 compiling a file, based on its suffix.
797 A file that does not end in any of these suffixes will be passed
798 unchanged to the loader and nothing else will be done to it.
800 An entry containing two 0s is used to terminate the vector.
802 If multiple entries match a file, the last matching one is used. */
804 static struct compiler *compilers;
806 /* Number of entries in `compilers', not counting the null terminator. */
808 static int n_compilers;
810 /* The default list of file name suffixes and their compilation specs. */
812 static const struct compiler default_compilers[] =
814 /* Add lists of suffixes of known languages here. If those languages
815 were not present when we built the driver, we will hit these copies
816 and be given a more meaningful error than "file not used since
817 linking is not done". */
818 {".m", "#Objective-C", 0}, {".mi", "#Objective-C", 0},
819 {".cc", "#C++", 0}, {".cxx", "#C++", 0}, {".cpp", "#C++", 0},
820 {".cp", "#C++", 0}, {".c++", "#C++", 0}, {".C", "#C++", 0},
822 {".ads", "#Ada", 0}, {".adb", "#Ada", 0},
823 {".f", "#Fortran", 0}, {".for", "#Fortran", 0}, {".fpp", "#Fortran", 0},
824 {".F", "#Fortran", 0}, {".FOR", "#Fortran", 0}, {".FPP", "#Fortran", 0},
825 {".r", "#Ratfor", 0},
826 {".p", "#Pascal", 0}, {".pas", "#Pascal", 0},
827 {".java", "#Java", 0}, {".class", "#Java", 0},
828 {".zip", "#Java", 0}, {".jar", "#Java", 0},
829 /* Next come the entries for C. */
832 /* cc1 has an integrated ISO C preprocessor. We should invoke the
833 external preprocessor if -save-temps is given. */
834 "%{E|M|MM:%(trad_capable_cpp) -lang-c %{ansi:-std=c89} %(cpp_options)}\
836 %{traditional|ftraditional:\
837 %eGNU C no longer supports -traditional without -E}\
838 %{save-temps|traditional-cpp:%(trad_capable_cpp) \
839 -lang-c %{ansi:-std=c89} %(cpp_options) %b.i \n\
840 cc1 -fpreprocessed %b.i %(cc1_options)}\
841 %{!save-temps:%{!traditional-cpp:\
842 cc1 -lang-c %{ansi:-std=c89} %(cpp_unique_options) %(cc1_options)}}\
843 %{!fsyntax-only:%(invoke_as)}}}}", 0},
845 "%{!E:%e-E required when input is from standard input}\
846 %(trad_capable_cpp) -lang-c %{ansi:-std=c89} %(cpp_options)", 0},
847 {".h", "@c-header", 0},
849 "%{!E:%ecompilation of header file requested} \
850 %(trad_capable_cpp) -lang-c %{ansi:-std=c89} %(cpp_options)", 0},
851 {".i", "@cpp-output", 0},
853 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0},
854 {".s", "@assembler", 0},
856 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0},
857 {".S", "@assembler-with-cpp", 0},
858 {"@assembler-with-cpp",
859 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
860 %{!M:%{!MM:%{!E:%{!S:-o %{|!pipe:%g.s} |\n\
861 as %(asm_debug) %(asm_options) %{!pipe:%g.s} %A }}}}", 0},
863 /* Mark end of table */
867 /* Number of elements in default_compilers, not counting the terminator. */
869 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
871 /* A vector of options to give to the linker.
872 These options are accumulated by %x,
873 and substituted into the linker command with %X. */
874 static int n_linker_options;
875 static char **linker_options;
877 /* A vector of options to give to the assembler.
878 These options are accumulated by -Wa,
879 and substituted into the assembler command with %Y. */
880 static int n_assembler_options;
881 static char **assembler_options;
883 /* A vector of options to give to the preprocessor.
884 These options are accumulated by -Wp,
885 and substituted into the preprocessor command with %Z. */
886 static int n_preprocessor_options;
887 static char **preprocessor_options;
889 /* Define how to map long options into short ones. */
891 /* This structure describes one mapping. */
894 /* The long option's name. */
895 const char *const name;
896 /* The equivalent short option. */
897 const char *const equivalent;
898 /* Argument info. A string of flag chars; NULL equals no options.
899 a => argument required.
900 o => argument optional.
901 j => join argument to equivalent, making one word.
902 * => require other text after NAME as an argument. */
903 const char *const arg_info;
906 /* This is the table of mappings. Mappings are tried sequentially
907 for each option encountered; the first one that matches, wins. */
909 static const struct option_map option_map[] =
911 {"--all-warnings", "-Wall", 0},
912 {"--ansi", "-ansi", 0},
913 {"--assemble", "-S", 0},
914 {"--assert", "-A", "a"},
915 {"--classpath", "-fclasspath=", "aj"},
916 {"--bootclasspath", "-fbootclasspath=", "aj"},
917 {"--CLASSPATH", "-fclasspath=", "aj"},
918 {"--comments", "-C", 0},
919 {"--comments-in-macros", "-CC", 0},
920 {"--compile", "-c", 0},
921 {"--debug", "-g", "oj"},
922 {"--define-macro", "-D", "aj"},
923 {"--dependencies", "-M", 0},
924 {"--dump", "-d", "a"},
925 {"--dumpbase", "-dumpbase", "a"},
926 {"--entry", "-e", 0},
927 {"--extra-warnings", "-W", 0},
928 {"--for-assembler", "-Wa", "a"},
929 {"--for-linker", "-Xlinker", "a"},
930 {"--force-link", "-u", "a"},
931 {"--imacros", "-imacros", "a"},
932 {"--include", "-include", "a"},
933 {"--include-barrier", "-I-", 0},
934 {"--include-directory", "-I", "aj"},
935 {"--include-directory-after", "-idirafter", "a"},
936 {"--include-prefix", "-iprefix", "a"},
937 {"--include-with-prefix", "-iwithprefix", "a"},
938 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
939 {"--include-with-prefix-after", "-iwithprefix", "a"},
940 {"--language", "-x", "a"},
941 {"--library-directory", "-L", "a"},
942 {"--machine", "-m", "aj"},
943 {"--machine-", "-m", "*j"},
944 {"--no-line-commands", "-P", 0},
945 {"--no-precompiled-includes", "-noprecomp", 0},
946 {"--no-standard-includes", "-nostdinc", 0},
947 {"--no-standard-libraries", "-nostdlib", 0},
948 {"--no-warnings", "-w", 0},
949 {"--optimize", "-O", "oj"},
950 {"--output", "-o", "a"},
951 {"--output-class-directory", "-foutput-class-dir=", "ja"},
952 {"--param", "--param", "a"},
953 {"--pedantic", "-pedantic", 0},
954 {"--pedantic-errors", "-pedantic-errors", 0},
955 {"--pipe", "-pipe", 0},
956 {"--prefix", "-B", "a"},
957 {"--preprocess", "-E", 0},
958 {"--print-search-dirs", "-print-search-dirs", 0},
959 {"--print-file-name", "-print-file-name=", "aj"},
960 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
961 {"--print-missing-file-dependencies", "-MG", 0},
962 {"--print-multi-lib", "-print-multi-lib", 0},
963 {"--print-multi-directory", "-print-multi-directory", 0},
964 {"--print-prog-name", "-print-prog-name=", "aj"},
965 {"--profile", "-p", 0},
966 {"--profile-blocks", "-a", 0},
967 {"--quiet", "-q", 0},
968 {"--resource", "-fcompile-resource=", "aj"},
969 {"--save-temps", "-save-temps", 0},
970 {"--shared", "-shared", 0},
971 {"--silent", "-q", 0},
972 {"--specs", "-specs=", "aj"},
973 {"--static", "-static", 0},
974 {"--std", "-std=", "aj"},
975 {"--symbolic", "-symbolic", 0},
976 {"--target", "-b", "a"},
977 {"--time", "-time", 0},
978 {"--trace-includes", "-H", 0},
979 {"--traditional", "-traditional", 0},
980 {"--traditional-cpp", "-traditional-cpp", 0},
981 {"--trigraphs", "-trigraphs", 0},
982 {"--undefine-macro", "-U", "aj"},
983 {"--use-version", "-V", "a"},
984 {"--user-dependencies", "-MM", 0},
985 {"--verbose", "-v", 0},
986 {"--warn-", "-W", "*j"},
987 {"--write-dependencies", "-MD", 0},
988 {"--write-user-dependencies", "-MMD", 0},
993 #ifdef TARGET_OPTION_TRANSLATE_TABLE
994 static const struct {
995 const char *const option_found;
996 const char *const replacements;
997 } target_option_translations[] =
999 TARGET_OPTION_TRANSLATE_TABLE,
1004 /* Translate the options described by *ARGCP and *ARGVP.
1005 Make a new vector and store it back in *ARGVP,
1006 and store its length in *ARGVC. */
1009 translate_options (argcp, argvp)
1011 const char *const **argvp;
1015 const char *const *argv = *argvp;
1016 int newvsize = (argc + 2) * 2 * sizeof (const char *);
1018 (const char **) xmalloc (newvsize);
1022 newv[newindex++] = argv[i++];
1026 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1030 target_option_translations[tott_idx].option_found;
1033 if (strcmp (target_option_translations[tott_idx].option_found,
1040 for (sp = target_option_translations[tott_idx].replacements;
1047 newvsize += spaces * sizeof (const char *);
1048 newv = (const char **) xrealloc (newv, newvsize);
1050 sp = target_option_translations[tott_idx].replacements;
1059 newv[newindex++] = np;
1060 while (*np != ' ' && *np)
1071 if (target_option_translations[tott_idx].option_found)
1075 /* Translate -- options. */
1076 if (argv[i][0] == '-' && argv[i][1] == '-')
1079 /* Find a mapping that applies to this option. */
1080 for (j = 0; j < ARRAY_SIZE (option_map); j++)
1082 size_t optlen = strlen (option_map[j].name);
1083 size_t arglen = strlen (argv[i]);
1084 size_t complen = arglen > optlen ? optlen : arglen;
1085 const char *arginfo = option_map[j].arg_info;
1090 if (!strncmp (argv[i], option_map[j].name, complen))
1092 const char *arg = 0;
1094 if (arglen < optlen)
1097 for (k = j + 1; k < ARRAY_SIZE (option_map); k++)
1098 if (strlen (option_map[k].name) >= arglen
1099 && !strncmp (argv[i], option_map[k].name, arglen))
1101 error ("ambiguous abbreviation %s", argv[i]);
1105 if (k != ARRAY_SIZE (option_map))
1109 if (arglen > optlen)
1111 /* If the option has an argument, accept that. */
1112 if (argv[i][optlen] == '=')
1113 arg = argv[i] + optlen + 1;
1115 /* If this mapping requires extra text at end of name,
1116 accept that as "argument". */
1117 else if (strchr (arginfo, '*') != 0)
1118 arg = argv[i] + optlen;
1120 /* Otherwise, extra text at end means mismatch.
1121 Try other mappings. */
1126 else if (strchr (arginfo, '*') != 0)
1128 error ("incomplete `%s' option", option_map[j].name);
1132 /* Handle arguments. */
1133 if (strchr (arginfo, 'a') != 0)
1139 error ("missing argument to `%s' option",
1140 option_map[j].name);
1147 else if (strchr (arginfo, '*') != 0)
1149 else if (strchr (arginfo, 'o') == 0)
1152 error ("extraneous argument to `%s' option",
1153 option_map[j].name);
1157 /* Store the translation as one argv elt or as two. */
1158 if (arg != 0 && strchr (arginfo, 'j') != 0)
1159 newv[newindex++] = concat (option_map[j].equivalent, arg,
1163 newv[newindex++] = option_map[j].equivalent;
1164 newv[newindex++] = arg;
1167 newv[newindex++] = option_map[j].equivalent;
1175 /* Handle old-fashioned options--just copy them through,
1176 with their arguments. */
1177 else if (argv[i][0] == '-')
1179 const char *p = argv[i] + 1;
1183 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
1184 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
1185 else if (WORD_SWITCH_TAKES_ARG (p))
1186 nskip += WORD_SWITCH_TAKES_ARG (p);
1187 else if ((c == 'B' || c == 'b' || c == 'x')
1190 else if (! strcmp (p, "Xlinker"))
1193 /* Watch out for an option at the end of the command line that
1194 is missing arguments, and avoid skipping past the end of the
1196 if (nskip + i > argc)
1201 newv[newindex++] = argv[i++];
1206 /* Ordinary operands, or +e options. */
1207 newv[newindex++] = argv[i++];
1222 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1223 be considered whitespace. */
1224 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1226 else if (*p == '\n' || *p == ' ' || *p == '\t')
1240 /* Structures to keep track of prefixes to try when looking for files. */
1244 const char *prefix; /* String to prepend to the path. */
1245 struct prefix_list *next; /* Next in linked list. */
1246 int require_machine_suffix; /* Don't use without machine_suffix. */
1247 /* 2 means try both machine_suffix and just_machine_suffix. */
1248 int *used_flag_ptr; /* 1 if a file was found with this prefix. */
1249 int priority; /* Sort key - priority within list */
1254 struct prefix_list *plist; /* List of prefixes to try */
1255 int max_len; /* Max length of a prefix in PLIST */
1256 const char *name; /* Name of this list (used in config stuff) */
1259 /* List of prefixes to try when looking for executables. */
1261 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1263 /* List of prefixes to try when looking for startup (crt0) files. */
1265 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1267 /* List of prefixes to try when looking for include files. */
1269 static struct path_prefix include_prefixes = { 0, 0, "include" };
1271 /* Suffix to attach to directories searched for commands.
1272 This looks like `MACHINE/VERSION/'. */
1274 static const char *machine_suffix = 0;
1276 /* Suffix to attach to directories searched for commands.
1277 This is just `MACHINE/'. */
1279 static const char *just_machine_suffix = 0;
1281 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1283 static const char *gcc_exec_prefix;
1285 /* Default prefixes to attach to command names. */
1287 #ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */
1288 #undef MD_EXEC_PREFIX
1289 #undef MD_STARTFILE_PREFIX
1290 #undef MD_STARTFILE_PREFIX_1
1293 /* If no prefixes defined, use the null string, which will disable them. */
1294 #ifndef MD_EXEC_PREFIX
1295 #define MD_EXEC_PREFIX ""
1297 #ifndef MD_STARTFILE_PREFIX
1298 #define MD_STARTFILE_PREFIX ""
1300 #ifndef MD_STARTFILE_PREFIX_1
1301 #define MD_STARTFILE_PREFIX_1 ""
1304 /* Supply defaults for the standard prefixes. */
1306 #ifndef STANDARD_EXEC_PREFIX
1307 #define STANDARD_EXEC_PREFIX "/usr/local/lib/gcc-lib/"
1309 #ifndef STANDARD_STARTFILE_PREFIX
1310 #define STANDARD_STARTFILE_PREFIX "/usr/local/lib/"
1312 #ifndef TOOLDIR_BASE_PREFIX
1313 #define TOOLDIR_BASE_PREFIX "/usr/local/"
1315 #ifndef STANDARD_BINDIR_PREFIX
1316 #define STANDARD_BINDIR_PREFIX "/usr/local/bin"
1319 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1320 static const char *const standard_exec_prefix_1 = "/usr/lib/gcc/";
1321 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1323 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1324 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1325 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1326 static const char *const standard_startfile_prefix_1 = "/lib/";
1327 static const char *const standard_startfile_prefix_2 = "/usr/lib/";
1329 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1330 static const char *tooldir_prefix;
1332 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1334 /* Subdirectory to use for locating libraries. Set by
1335 set_multilib_dir based on the compilation options. */
1337 static const char *multilib_dir;
1339 /* Structure to keep track of the specs that have been defined so far.
1340 These are accessed using %(specname) or %[specname] in a compiler
1345 /* The following 2 fields must be first */
1346 /* to allow EXTRA_SPECS to be initialized */
1347 const char *name; /* name of the spec. */
1348 const char *ptr; /* available ptr if no static pointer */
1350 /* The following fields are not initialized */
1351 /* by EXTRA_SPECS */
1352 const char **ptr_spec; /* pointer to the spec itself. */
1353 struct spec_list *next; /* Next spec in linked list. */
1354 int name_len; /* length of the name */
1355 int alloc_p; /* whether string was allocated */
1358 #define INIT_STATIC_SPEC(NAME,PTR) \
1359 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1361 /* List of statically defined specs. */
1362 static struct spec_list static_specs[] =
1364 INIT_STATIC_SPEC ("asm", &asm_spec),
1365 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1366 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1367 INIT_STATIC_SPEC ("asm_options", &asm_options),
1368 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1369 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1370 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1371 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1372 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1373 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1374 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1375 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1376 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1377 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1378 INIT_STATIC_SPEC ("link", &link_spec),
1379 INIT_STATIC_SPEC ("lib", &lib_spec),
1380 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1381 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1382 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces),
1383 INIT_STATIC_SPEC ("predefines", &cpp_predefines),
1384 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1385 INIT_STATIC_SPEC ("version", &compiler_version),
1386 INIT_STATIC_SPEC ("multilib", &multilib_select),
1387 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1388 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1389 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1390 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1391 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1392 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1393 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1394 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1395 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1398 #ifdef EXTRA_SPECS /* additional specs needed */
1399 /* Structure to keep track of just the first two args of a spec_list.
1400 That is all that the EXTRA_SPECS macro gives us. */
1403 const char *const name;
1404 const char *const ptr;
1407 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1408 static struct spec_list *extra_specs = (struct spec_list *) 0;
1411 /* List of dynamically allocates specs that have been defined so far. */
1413 static struct spec_list *specs = (struct spec_list *) 0;
1415 /* Add appropriate libgcc specs to OBSTACK, taking into account
1416 various permutations of -shared-libgcc, -shared, and such. */
1418 #ifdef ENABLE_SHARED_LIBGCC
1420 init_gcc_specs (obstack, shared_name, static_name, eh_name)
1421 struct obstack *obstack;
1422 const char *shared_name;
1423 const char *static_name;
1424 const char *eh_name;
1428 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name,
1429 "}%{!static:%{!static-libgcc:",
1430 "%{!shared:%{!shared-libgcc:", static_name, " ",
1431 eh_name, "}%{shared-libgcc:", shared_name, " ",
1432 static_name, "}}%{shared:",
1434 "%{shared-libgcc:", shared_name,
1435 "}%{!shared-libgcc:", static_name, "}",
1441 obstack_grow (obstack, buf, strlen (buf));
1444 #endif /* ENABLE_SHARED_LIBGCC */
1446 /* Initialize the specs lookup routines. */
1451 struct spec_list *next = (struct spec_list *) 0;
1452 struct spec_list *sl = (struct spec_list *) 0;
1456 return; /* Already initialized. */
1459 notice ("Using built-in specs.\n");
1462 extra_specs = (struct spec_list *)
1463 xcalloc (sizeof (struct spec_list), ARRAY_SIZE (extra_specs_1));
1465 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1467 sl = &extra_specs[i];
1468 sl->name = extra_specs_1[i].name;
1469 sl->ptr = extra_specs_1[i].ptr;
1471 sl->name_len = strlen (sl->name);
1472 sl->ptr_spec = &sl->ptr;
1477 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1479 sl = &static_specs[i];
1484 #ifdef ENABLE_SHARED_LIBGCC
1485 /* ??? If neither -shared-libgcc nor --static-libgcc was
1486 seen, then we should be making an educated guess. Some proposed
1487 heuristics for ELF include:
1489 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1490 program will be doing dynamic loading, which will likely
1491 need the shared libgcc.
1493 (2) If "-ldl", then it's also a fair bet that we're doing
1496 (3) For each ET_DYN we're linking against (either through -lfoo
1497 or /some/path/foo.so), check to see whether it or one of
1498 its dependencies depends on a shared libgcc.
1502 If the runtime is fixed to look for program headers instead
1503 of calling __register_frame_info at all, for each object,
1504 use the shared libgcc if any EH symbol referenced.
1506 If crtstuff is fixed to not invoke __register_frame_info
1507 automatically, for each object, use the shared libgcc if
1508 any non-empty unwind section found.
1510 Doing any of this probably requires invoking an external program to
1511 do the actual object file scanning. */
1513 const char *p = libgcc_spec;
1516 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1517 when given the proper command line arguments. */
1520 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1522 init_gcc_specs (&obstack,
1523 #ifdef NO_SHARED_LIBGCC_MULTILIB
1534 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1536 /* Ug. We don't know shared library extensions. Hope that
1537 systems that use this form don't do shared libraries. */
1538 init_gcc_specs (&obstack,
1539 #ifdef NO_SHARED_LIBGCC_MULTILIB
1552 obstack_1grow (&obstack, *p);
1553 in_sep = (*p == ' ');
1558 obstack_1grow (&obstack, '\0');
1559 libgcc_spec = obstack_finish (&obstack);
1562 #ifdef USE_AS_TRADITIONAL_FORMAT
1563 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1565 static const char tf[] = "--traditional-format ";
1566 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1567 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1568 asm_spec = obstack_finish (&obstack);
1572 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1573 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1574 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1575 link_spec = obstack_finish (&obstack);
1581 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1582 removed; If the spec starts with a + then SPEC is added to the end of the
1586 set_spec (name, spec)
1590 struct spec_list *sl;
1591 const char *old_spec;
1592 int name_len = strlen (name);
1595 /* If this is the first call, initialize the statically allocated specs. */
1598 struct spec_list *next = (struct spec_list *) 0;
1599 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1601 sl = &static_specs[i];
1608 /* See if the spec already exists. */
1609 for (sl = specs; sl; sl = sl->next)
1610 if (name_len == sl->name_len && !strcmp (sl->name, name))
1615 /* Not found - make it. */
1616 sl = (struct spec_list *) xmalloc (sizeof (struct spec_list));
1617 sl->name = xstrdup (name);
1618 sl->name_len = name_len;
1619 sl->ptr_spec = &sl->ptr;
1621 *(sl->ptr_spec) = "";
1626 old_spec = *(sl->ptr_spec);
1627 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1628 ? concat (old_spec, spec + 1, NULL)
1633 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1636 /* Free the old spec. */
1637 if (old_spec && sl->alloc_p)
1638 free ((PTR) old_spec);
1643 /* Accumulate a command (program name and args), and run it. */
1645 /* Vector of pointers to arguments in the current line of specifications. */
1647 static const char **argbuf;
1649 /* Number of elements allocated in argbuf. */
1651 static int argbuf_length;
1653 /* Number of elements in argbuf currently in use (containing args). */
1655 static int argbuf_index;
1657 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1658 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1661 static struct temp_name {
1662 const char *suffix; /* suffix associated with the code. */
1663 int length; /* strlen (suffix). */
1664 int unique; /* Indicates whether %g or %u/%U was used. */
1665 const char *filename; /* associated filename. */
1666 int filename_length; /* strlen (filename). */
1667 struct temp_name *next;
1670 /* Number of commands executed so far. */
1672 static int execution_count;
1674 /* Number of commands that exited with a signal. */
1676 static int signal_count;
1678 /* Name with which this program was invoked. */
1680 static const char *programname;
1682 /* Clear out the vector of arguments (after a command is executed). */
1690 /* Add one argument to the vector at the end.
1691 This is done when a space is seen or at the end of the line.
1692 If DELETE_ALWAYS is nonzero, the arg is a filename
1693 and the file should be deleted eventually.
1694 If DELETE_FAILURE is nonzero, the arg is a filename
1695 and the file should be deleted if this compilation fails. */
1698 store_arg (arg, delete_always, delete_failure)
1700 int delete_always, delete_failure;
1702 if (argbuf_index + 1 == argbuf_length)
1704 = (const char **) xrealloc (argbuf,
1705 (argbuf_length *= 2) * sizeof (const char *));
1707 argbuf[argbuf_index++] = arg;
1708 argbuf[argbuf_index] = 0;
1710 if (delete_always || delete_failure)
1711 record_temp_file (arg, delete_always, delete_failure);
1714 /* Load specs from a file name named FILENAME, replacing occurrences of
1715 various different types of line-endings, \r\n, \n\r and just \r, with
1719 load_specs (filename)
1720 const char *filename;
1724 struct stat statbuf;
1731 notice ("Reading specs from %s\n", filename);
1733 /* Open and stat the file. */
1734 desc = open (filename, O_RDONLY, 0);
1736 pfatal_with_name (filename);
1737 if (stat (filename, &statbuf) < 0)
1738 pfatal_with_name (filename);
1740 /* Read contents of file into BUFFER. */
1741 buffer = xmalloc ((unsigned) statbuf.st_size + 1);
1742 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1744 pfatal_with_name (filename);
1745 buffer[readlen] = 0;
1748 specs = xmalloc (readlen + 1);
1750 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1756 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1758 else if (*(buffer_p + 1) == '\n') /* \r\n */
1772 /* Read compilation specs from a file named FILENAME,
1773 replacing the default ones.
1775 A suffix which starts with `*' is a definition for
1776 one of the machine-specific sub-specs. The "suffix" should be
1777 *asm, *cc1, *cpp, *link, *startfile, etc.
1778 The corresponding spec is stored in asm_spec, etc.,
1779 rather than in the `compilers' vector.
1781 Anything invalid in the file is a fatal error. */
1784 read_specs (filename, main_p)
1785 const char *filename;
1791 buffer = load_specs (filename);
1793 /* Scan BUFFER for specs, putting them in the vector. */
1799 char *in, *out, *p1, *p2, *p3;
1801 /* Advance P in BUFFER to the next nonblank nocomment line. */
1802 p = skip_whitespace (p);
1806 /* Is this a special command that starts with '%'? */
1807 /* Don't allow this for the main specs file, since it would
1808 encourage people to overwrite it. */
1809 if (*p == '%' && !main_p)
1812 while (*p && *p != '\n')
1818 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1819 && (p1[sizeof "%include" - 1] == ' '
1820 || p1[sizeof "%include" - 1] == '\t'))
1824 p1 += sizeof ("%include");
1825 while (*p1 == ' ' || *p1 == '\t')
1828 if (*p1++ != '<' || p[-2] != '>')
1829 fatal ("specs %%include syntax malformed after %ld characters",
1830 (long) (p1 - buffer + 1));
1833 new_filename = find_a_file (&startfile_prefixes, p1, R_OK);
1834 read_specs (new_filename ? new_filename : p1, FALSE);
1837 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1838 && (p1[sizeof "%include_noerr" - 1] == ' '
1839 || p1[sizeof "%include_noerr" - 1] == '\t'))
1843 p1 += sizeof "%include_noerr";
1844 while (*p1 == ' ' || *p1 == '\t')
1847 if (*p1++ != '<' || p[-2] != '>')
1848 fatal ("specs %%include syntax malformed after %ld characters",
1849 (long) (p1 - buffer + 1));
1852 new_filename = find_a_file (&startfile_prefixes, p1, R_OK);
1854 read_specs (new_filename, FALSE);
1855 else if (verbose_flag)
1856 notice ("could not find specs file %s\n", p1);
1859 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1860 && (p1[sizeof "%rename" - 1] == ' '
1861 || p1[sizeof "%rename" - 1] == '\t'))
1864 struct spec_list *sl;
1865 struct spec_list *newsl;
1867 /* Get original name. */
1868 p1 += sizeof "%rename";
1869 while (*p1 == ' ' || *p1 == '\t')
1872 if (! ISALPHA ((unsigned char) *p1))
1873 fatal ("specs %%rename syntax malformed after %ld characters",
1874 (long) (p1 - buffer));
1877 while (*p2 && !ISSPACE ((unsigned char) *p2))
1880 if (*p2 != ' ' && *p2 != '\t')
1881 fatal ("specs %%rename syntax malformed after %ld characters",
1882 (long) (p2 - buffer));
1886 while (*p2 == ' ' || *p2 == '\t')
1889 if (! ISALPHA ((unsigned char) *p2))
1890 fatal ("specs %%rename syntax malformed after %ld characters",
1891 (long) (p2 - buffer));
1893 /* Get new spec name. */
1895 while (*p3 && !ISSPACE ((unsigned char) *p3))
1899 fatal ("specs %%rename syntax malformed after %ld characters",
1900 (long) (p3 - buffer));
1903 for (sl = specs; sl; sl = sl->next)
1904 if (name_len == sl->name_len && !strcmp (sl->name, p1))
1908 fatal ("specs %s spec was not found to be renamed", p1);
1910 if (strcmp (p1, p2) == 0)
1913 for (newsl = specs; newsl; newsl = newsl->next)
1914 if (strcmp (newsl->name, p2) == 0)
1915 fatal ("%s: attempt to rename spec '%s' to already defined spec '%s'",
1920 notice ("rename spec %s to %s\n", p1, p2);
1922 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
1926 set_spec (p2, *(sl->ptr_spec));
1928 free ((PTR) *(sl->ptr_spec));
1930 *(sl->ptr_spec) = "";
1935 fatal ("specs unknown %% command after %ld characters",
1936 (long) (p1 - buffer));
1939 /* Find the colon that should end the suffix. */
1941 while (*p1 && *p1 != ':' && *p1 != '\n')
1944 /* The colon shouldn't be missing. */
1946 fatal ("specs file malformed after %ld characters",
1947 (long) (p1 - buffer));
1949 /* Skip back over trailing whitespace. */
1951 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
1954 /* Copy the suffix to a string. */
1955 suffix = save_string (p, p2 - p);
1956 /* Find the next line. */
1957 p = skip_whitespace (p1 + 1);
1959 fatal ("specs file malformed after %ld characters",
1960 (long) (p - buffer));
1963 /* Find next blank line or end of string. */
1964 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
1967 /* Specs end at the blank line and do not include the newline. */
1968 spec = save_string (p, p1 - p);
1971 /* Delete backslash-newline sequences from the spec. */
1976 if (in[0] == '\\' && in[1] == '\n')
1978 else if (in[0] == '#')
1979 while (*in && *in != '\n')
1987 if (suffix[0] == '*')
1989 if (! strcmp (suffix, "*link_command"))
1990 link_command_spec = spec;
1992 set_spec (suffix + 1, spec);
1996 /* Add this pair to the vector. */
1998 = ((struct compiler *)
1999 xrealloc (compilers,
2000 (n_compilers + 2) * sizeof (struct compiler)));
2002 compilers[n_compilers].suffix = suffix;
2003 compilers[n_compilers].spec = spec;
2005 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2009 link_command_spec = spec;
2012 if (link_command_spec == 0)
2013 fatal ("spec file has no spec for linking");
2016 /* Record the names of temporary files we tell compilers to write,
2017 and delete them at the end of the run. */
2019 /* This is the common prefix we use to make temp file names.
2020 It is chosen once for each run of this program.
2021 It is substituted into a spec by %g or %j.
2022 Thus, all temp file names contain this prefix.
2023 In practice, all temp file names start with this prefix.
2025 This prefix comes from the envvar TMPDIR if it is defined;
2026 otherwise, from the P_tmpdir macro if that is defined;
2027 otherwise, in /usr/tmp or /tmp;
2028 or finally the current directory if all else fails. */
2030 static const char *temp_filename;
2032 /* Length of the prefix. */
2034 static int temp_filename_length;
2036 /* Define the list of temporary files to delete. */
2041 struct temp_file *next;
2044 /* Queue of files to delete on success or failure of compilation. */
2045 static struct temp_file *always_delete_queue;
2046 /* Queue of files to delete on failure of compilation. */
2047 static struct temp_file *failure_delete_queue;
2049 /* Record FILENAME as a file to be deleted automatically.
2050 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2051 otherwise delete it in any case.
2052 FAIL_DELETE nonzero means delete it if a compilation step fails;
2053 otherwise delete it in any case. */
2056 record_temp_file (filename, always_delete, fail_delete)
2057 const char *filename;
2061 char *const name = xstrdup (filename);
2065 struct temp_file *temp;
2066 for (temp = always_delete_queue; temp; temp = temp->next)
2067 if (! strcmp (name, temp->name))
2070 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
2071 temp->next = always_delete_queue;
2073 always_delete_queue = temp;
2080 struct temp_file *temp;
2081 for (temp = failure_delete_queue; temp; temp = temp->next)
2082 if (! strcmp (name, temp->name))
2085 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
2086 temp->next = failure_delete_queue;
2088 failure_delete_queue = temp;
2094 /* Delete all the temporary files whose names we previously recorded. */
2097 delete_if_ordinary (name)
2104 printf ("Delete %s? (y or n) ", name);
2108 while ((c = getchar ()) != '\n' && c != EOF)
2111 if (i == 'y' || i == 'Y')
2113 if (stat (name, &st) >= 0 && S_ISREG (st.st_mode))
2114 if (unlink (name) < 0)
2116 perror_with_name (name);
2120 delete_temp_files ()
2122 struct temp_file *temp;
2124 for (temp = always_delete_queue; temp; temp = temp->next)
2125 delete_if_ordinary (temp->name);
2126 always_delete_queue = 0;
2129 /* Delete all the files to be deleted on error. */
2132 delete_failure_queue ()
2134 struct temp_file *temp;
2136 for (temp = failure_delete_queue; temp; temp = temp->next)
2137 delete_if_ordinary (temp->name);
2141 clear_failure_queue ()
2143 failure_delete_queue = 0;
2146 /* Build a list of search directories from PATHS.
2147 PREFIX is a string to prepend to the list.
2148 If CHECK_DIR_P is non-zero we ensure the directory exists.
2149 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2150 It is also used by the --print-search-dirs flag. */
2153 build_search_list (paths, prefix, check_dir_p)
2154 struct path_prefix *paths;
2158 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0;
2160 = (just_machine_suffix) ? strlen (just_machine_suffix) : 0;
2161 int first_time = TRUE;
2162 struct prefix_list *pprefix;
2164 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2165 obstack_1grow (&collect_obstack, '=');
2167 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next)
2169 int len = strlen (pprefix->prefix);
2173 || is_directory (pprefix->prefix, machine_suffix, 0)))
2176 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2179 obstack_grow (&collect_obstack, pprefix->prefix, len);
2180 obstack_grow (&collect_obstack, machine_suffix, suffix_len);
2183 if (just_machine_suffix
2184 && pprefix->require_machine_suffix == 2
2186 || is_directory (pprefix->prefix, just_machine_suffix, 0)))
2189 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2192 obstack_grow (&collect_obstack, pprefix->prefix, len);
2193 obstack_grow (&collect_obstack, just_machine_suffix,
2197 if (! pprefix->require_machine_suffix)
2200 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2203 obstack_grow (&collect_obstack, pprefix->prefix, len);
2207 obstack_1grow (&collect_obstack, '\0');
2208 return obstack_finish (&collect_obstack);
2211 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2215 putenv_from_prefixes (paths, env_var)
2216 struct path_prefix *paths;
2217 const char *env_var;
2219 putenv (build_search_list (paths, env_var, 1));
2224 /* FIXME: the location independence code for VMS is hairier than this,
2225 and hasn't been written. */
2227 /* Split a filename into component directories. */
2230 split_directories (name, ptr_num_dirs)
2239 /* Count the number of directories. Special case MSDOS disk names as part
2240 of the initial directory. */
2242 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2243 if (name[1] == ':' && IS_DIR_SEPARATOR (name[2]))
2248 #endif /* HAVE_DOS_BASED_FILE_SYSTEM */
2250 while ((ch = *p++) != '\0')
2252 if (IS_DIR_SEPARATOR (ch))
2255 while (IS_DIR_SEPARATOR (*p))
2260 dirs = (char **) xmalloc (sizeof (char *) * (num_dirs + 2));
2262 /* Now copy the directory parts. */
2265 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2266 if (name[1] == ':' && IS_DIR_SEPARATOR (name[2]))
2268 dirs[num_dirs++] = save_string (p, 3);
2271 #endif /* HAVE_DOS_BASED_FILE_SYSTEM */
2274 while ((ch = *p++) != '\0')
2276 if (IS_DIR_SEPARATOR (ch))
2278 while (IS_DIR_SEPARATOR (*p))
2281 dirs[num_dirs++] = save_string (q, p - q);
2287 dirs[num_dirs++] = save_string (q, p - 1 - q);
2289 dirs[num_dirs] = NULL;
2291 *ptr_num_dirs = num_dirs;
2296 /* Release storage held by split directories. */
2299 free_split_directories (dirs)
2304 while (dirs[i] != NULL)
2307 free ((char *) dirs);
2310 /* Given three strings PROGNAME, BIN_PREFIX, PREFIX, return a string that gets
2311 to PREFIX starting with the directory portion of PROGNAME and a relative
2312 pathname of the difference between BIN_PREFIX and PREFIX.
2314 For example, if BIN_PREFIX is /alpha/beta/gamma/gcc/delta, PREFIX is
2315 /alpha/beta/gamma/omega/, and PROGNAME is /red/green/blue/gcc, then this
2316 function will return /red/green/blue/../omega.
2318 If no relative prefix can be found, return NULL. */
2321 make_relative_prefix (progname, bin_prefix, prefix)
2322 const char *progname;
2323 const char *bin_prefix;
2326 char **prog_dirs, **bin_dirs, **prefix_dirs;
2327 int prog_num, bin_num, prefix_num, std_loc_p;
2330 prog_dirs = split_directories (progname, &prog_num);
2331 bin_dirs = split_directories (bin_prefix, &bin_num);
2333 /* If there is no full pathname, try to find the program by checking in each
2334 of the directories specified in the PATH environment variable. */
2339 GET_ENV_PATH_LIST (temp, "PATH");
2342 char *startp, *endp, *nstore;
2343 size_t prefixlen = strlen (temp) + 1;
2347 nstore = (char *) alloca (prefixlen + strlen (progname) + 1);
2349 startp = endp = temp;
2352 if (*endp == PATH_SEPARATOR || *endp == 0)
2357 nstore[1] = DIR_SEPARATOR;
2362 strncpy (nstore, startp, endp - startp);
2363 if (! IS_DIR_SEPARATOR (endp[-1]))
2365 nstore[endp - startp] = DIR_SEPARATOR;
2366 nstore[endp - startp + 1] = 0;
2369 nstore[endp - startp] = 0;
2371 strcat (nstore, progname);
2372 if (! access (nstore, X_OK)
2373 #ifdef HAVE_HOST_EXECUTABLE_SUFFIX
2374 || ! access (strcat (nstore, HOST_EXECUTABLE_SUFFIX), X_OK)
2378 free_split_directories (prog_dirs);
2380 prog_dirs = split_directories (progname, &prog_num);
2386 endp = startp = endp + 1;
2394 /* Remove the program name from comparison of directory names. */
2397 /* Determine if the compiler is installed in the standard location, and if
2398 so, we don't need to specify relative directories. Also, if argv[0]
2399 doesn't contain any directory specifiers, there is not much we can do. */
2401 if (prog_num == bin_num)
2403 for (i = 0; i < bin_num; i++)
2405 if (strcmp (prog_dirs[i], bin_dirs[i]) != 0)
2409 if (prog_num <= 0 || i == bin_num)
2412 free_split_directories (prog_dirs);
2413 free_split_directories (bin_dirs);
2414 prog_dirs = bin_dirs = (char **) 0;
2419 prefix_dirs = split_directories (prefix, &prefix_num);
2421 /* Find how many directories are in common between bin_prefix & prefix. */
2422 n = (prefix_num < bin_num) ? prefix_num : bin_num;
2423 for (common = 0; common < n; common++)
2425 if (strcmp (bin_dirs[common], prefix_dirs[common]) != 0)
2429 /* If there are no common directories, there can be no relative prefix. */
2432 free_split_directories (prog_dirs);
2433 free_split_directories (bin_dirs);
2434 free_split_directories (prefix_dirs);
2438 /* Build up the pathnames in argv[0]. */
2439 for (i = 0; i < prog_num; i++)
2440 obstack_grow (&obstack, prog_dirs[i], strlen (prog_dirs[i]));
2442 /* Now build up the ..'s. */
2443 for (i = common; i < n; i++)
2445 obstack_grow (&obstack, DIR_UP, sizeof (DIR_UP) - 1);
2446 obstack_1grow (&obstack, DIR_SEPARATOR);
2449 /* Put in directories to move over to prefix. */
2450 for (i = common; i < prefix_num; i++)
2451 obstack_grow (&obstack, prefix_dirs[i], strlen (prefix_dirs[i]));
2453 free_split_directories (prog_dirs);
2454 free_split_directories (bin_dirs);
2455 free_split_directories (prefix_dirs);
2457 obstack_1grow (&obstack, '\0');
2458 return obstack_finish (&obstack);
2462 /* Check whether NAME can be accessed in MODE. This is like access,
2463 except that it never considers directories to be executable. */
2466 access_check (name, mode)
2474 if (stat (name, &st) < 0
2475 || S_ISDIR (st.st_mode))
2479 return access (name, mode);
2482 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2483 access to check permissions.
2484 Return 0 if not found, otherwise return its name, allocated with malloc. */
2487 find_a_file (pprefix, name, mode)
2488 struct path_prefix *pprefix;
2493 const char *const file_suffix =
2494 ((mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "");
2495 struct prefix_list *pl;
2496 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1;
2498 #ifdef DEFAULT_ASSEMBLER
2499 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2500 return xstrdup (DEFAULT_ASSEMBLER);
2503 #ifdef DEFAULT_LINKER
2504 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2505 return xstrdup (DEFAULT_LINKER);
2509 len += strlen (machine_suffix);
2511 temp = xmalloc (len);
2513 /* Determine the filename to execute (special case for absolute paths). */
2515 if (IS_ABSOLUTE_PATHNAME (name))
2517 if (access (name, mode) == 0)
2519 strcpy (temp, name);
2524 for (pl = pprefix->plist; pl; pl = pl->next)
2528 /* Some systems have a suffix for executable files.
2529 So try appending that first. */
2530 if (file_suffix[0] != 0)
2532 strcpy (temp, pl->prefix);
2533 strcat (temp, machine_suffix);
2534 strcat (temp, name);
2535 strcat (temp, file_suffix);
2536 if (access_check (temp, mode) == 0)
2538 if (pl->used_flag_ptr != 0)
2539 *pl->used_flag_ptr = 1;
2544 /* Now try just the name. */
2545 strcpy (temp, pl->prefix);
2546 strcat (temp, machine_suffix);
2547 strcat (temp, name);
2548 if (access_check (temp, mode) == 0)
2550 if (pl->used_flag_ptr != 0)
2551 *pl->used_flag_ptr = 1;
2556 /* Certain prefixes are tried with just the machine type,
2557 not the version. This is used for finding as, ld, etc. */
2558 if (just_machine_suffix && pl->require_machine_suffix == 2)
2560 /* Some systems have a suffix for executable files.
2561 So try appending that first. */
2562 if (file_suffix[0] != 0)
2564 strcpy (temp, pl->prefix);
2565 strcat (temp, just_machine_suffix);
2566 strcat (temp, name);
2567 strcat (temp, file_suffix);
2568 if (access_check (temp, mode) == 0)
2570 if (pl->used_flag_ptr != 0)
2571 *pl->used_flag_ptr = 1;
2576 strcpy (temp, pl->prefix);
2577 strcat (temp, just_machine_suffix);
2578 strcat (temp, name);
2579 if (access_check (temp, mode) == 0)
2581 if (pl->used_flag_ptr != 0)
2582 *pl->used_flag_ptr = 1;
2587 /* Certain prefixes can't be used without the machine suffix
2588 when the machine or version is explicitly specified. */
2589 if (! pl->require_machine_suffix)
2591 /* Some systems have a suffix for executable files.
2592 So try appending that first. */
2593 if (file_suffix[0] != 0)
2595 strcpy (temp, pl->prefix);
2596 strcat (temp, name);
2597 strcat (temp, file_suffix);
2598 if (access_check (temp, mode) == 0)
2600 if (pl->used_flag_ptr != 0)
2601 *pl->used_flag_ptr = 1;
2606 strcpy (temp, pl->prefix);
2607 strcat (temp, name);
2608 if (access_check (temp, mode) == 0)
2610 if (pl->used_flag_ptr != 0)
2611 *pl->used_flag_ptr = 1;
2621 /* Ranking of prefixes in the sort list. -B prefixes are put before
2624 enum path_prefix_priority
2626 PREFIX_PRIORITY_B_OPT,
2627 PREFIX_PRIORITY_LAST
2630 /* Add an entry for PREFIX in PLIST. The PLIST is kept in assending
2631 order according to PRIORITY. Within each PRIORITY, new entries are
2634 If WARN is nonzero, we will warn if no file is found
2635 through this prefix. WARN should point to an int
2636 which will be set to 1 if this entry is used.
2638 COMPONENT is the value to be passed to update_path.
2640 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2641 the complete value of machine_suffix.
2642 2 means try both machine_suffix and just_machine_suffix. */
2645 add_prefix (pprefix, prefix, component, priority, require_machine_suffix, warn)
2646 struct path_prefix *pprefix;
2648 const char *component;
2649 /* enum prefix_priority */ int priority;
2650 int require_machine_suffix;
2653 struct prefix_list *pl, **prev;
2656 for (prev = &pprefix->plist;
2657 (*prev) != NULL && (*prev)->priority <= priority;
2658 prev = &(*prev)->next)
2661 /* Keep track of the longest prefix */
2663 prefix = update_path (prefix, component);
2664 len = strlen (prefix);
2665 if (len > pprefix->max_len)
2666 pprefix->max_len = len;
2668 pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
2669 pl->prefix = prefix;
2670 pl->require_machine_suffix = require_machine_suffix;
2671 pl->used_flag_ptr = warn;
2672 pl->priority = priority;
2676 /* Insert after PREV */
2681 /* Execute the command specified by the arguments on the current line of spec.
2682 When using pipes, this includes several piped-together commands
2683 with `|' between them.
2685 Return 0 if successful, -1 if failed. */
2691 int n_commands; /* # of command. */
2695 const char *prog; /* program name. */
2696 const char **argv; /* vector of args. */
2697 int pid; /* pid of process for this command. */
2700 struct command *commands; /* each command buffer with above info. */
2702 /* Count # of piped commands. */
2703 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2704 if (strcmp (argbuf[i], "|") == 0)
2707 /* Get storage for each command. */
2708 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2710 /* Split argbuf into its separate piped processes,
2711 and record info about each one.
2712 Also search for the programs that are to be run. */
2714 commands[0].prog = argbuf[0]; /* first command. */
2715 commands[0].argv = &argbuf[0];
2716 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK);
2719 commands[0].argv[0] = string;
2721 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2722 if (strcmp (argbuf[i], "|") == 0)
2723 { /* each command. */
2724 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2725 fatal ("-pipe not supported");
2727 argbuf[i] = 0; /* termination of command args. */
2728 commands[n_commands].prog = argbuf[i + 1];
2729 commands[n_commands].argv = &argbuf[i + 1];
2730 string = find_a_file (&exec_prefixes, commands[n_commands].prog, X_OK);
2732 commands[n_commands].argv[0] = string;
2736 argbuf[argbuf_index] = 0;
2738 /* If -v, print what we are about to do, and maybe query. */
2742 /* For help listings, put a blank line between sub-processes. */
2743 if (print_help_list)
2744 fputc ('\n', stderr);
2746 /* Print each piped command as a separate line. */
2747 for (i = 0; i < n_commands; i++)
2749 const char *const *j;
2751 if (verbose_only_flag)
2753 for (j = commands[i].argv; *j; j++)
2756 fprintf (stderr, " \"");
2757 for (p = *j; *p; ++p)
2759 if (*p == '"' || *p == '\\' || *p == '$')
2760 fputc ('\\', stderr);
2763 fputc ('"', stderr);
2767 for (j = commands[i].argv; *j; j++)
2768 fprintf (stderr, " %s", *j);
2770 /* Print a pipe symbol after all but the last command. */
2771 if (i + 1 != n_commands)
2772 fprintf (stderr, " |");
2773 fprintf (stderr, "\n");
2776 if (verbose_only_flag != 0)
2779 notice ("\nGo ahead? (y or n) ");
2783 while (getchar () != '\n')
2786 if (i != 'y' && i != 'Y')
2791 /* Run each piped subprocess. */
2793 for (i = 0; i < n_commands; i++)
2795 char *errmsg_fmt, *errmsg_arg;
2796 const char *string = commands[i].argv[0];
2798 /* For some bizarre reason, the second argument of execvp() is
2799 char *const *, not const char *const *. */
2800 commands[i].pid = pexecute (string, (char *const *) commands[i].argv,
2801 programname, temp_filename,
2802 &errmsg_fmt, &errmsg_arg,
2803 ((i == 0 ? PEXECUTE_FIRST : 0)
2804 | (i + 1 == n_commands ? PEXECUTE_LAST : 0)
2805 | (string == commands[i].prog
2806 ? PEXECUTE_SEARCH : 0)
2807 | (verbose_flag ? PEXECUTE_VERBOSE : 0)));
2809 if (commands[i].pid == -1)
2810 pfatal_pexecute (errmsg_fmt, errmsg_arg);
2812 if (string != commands[i].prog)
2813 free ((PTR) string);
2818 /* Wait for all the subprocesses to finish.
2819 We don't care what order they finish in;
2820 we know that N_COMMANDS waits will get them all.
2821 Ignore subprocesses that we don't know about,
2822 since they can be spawned by the process that exec'ed us. */
2826 #ifdef HAVE_GETRUSAGE
2828 double ut = 0.0, st = 0.0;
2831 for (i = 0; i < n_commands;)
2837 pid = pwait (commands[i].pid, &status, 0);
2841 #ifdef HAVE_GETRUSAGE
2844 /* getrusage returns the total resource usage of all children
2845 up to now. Copy the previous values into prus, get the
2846 current statistics, then take the difference. */
2849 getrusage (RUSAGE_CHILDREN, &rus);
2850 d.tv_sec = rus.ru_utime.tv_sec - prus.ru_utime.tv_sec;
2851 d.tv_usec = rus.ru_utime.tv_usec - prus.ru_utime.tv_usec;
2852 ut = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2854 d.tv_sec = rus.ru_stime.tv_sec - prus.ru_stime.tv_sec;
2855 d.tv_usec = rus.ru_stime.tv_usec - prus.ru_stime.tv_usec;
2856 st = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2860 for (j = 0; j < n_commands; j++)
2861 if (commands[j].pid == pid)
2864 if (WIFSIGNALED (status))
2867 /* SIGPIPE is a special case. It happens in -pipe mode
2868 when the compiler dies before the preprocessor is
2869 done, or the assembler dies before the compiler is
2870 done. There's generally been an error already, and
2871 this is just fallout. So don't generate another error
2872 unless we would otherwise have succeeded. */
2873 if (WTERMSIG (status) == SIGPIPE
2874 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2879 Internal error: %s (program %s)\n\
2880 Please submit a full bug report.\n\
2881 See %s for instructions.",
2882 strsignal (WTERMSIG (status)), commands[j].prog,
2887 else if (WIFEXITED (status)
2888 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2890 if (WEXITSTATUS (status) > greatest_status)
2891 greatest_status = WEXITSTATUS (status);
2894 #ifdef HAVE_GETRUSAGE
2895 if (report_times && ut + st != 0)
2896 notice ("# %s %.2f %.2f\n", commands[j].prog, ut, st);
2905 /* Find all the switches given to us
2906 and make a vector describing them.
2907 The elements of the vector are strings, one per switch given.
2908 If a switch uses following arguments, then the `part1' field
2909 is the switch itself and the `args' field
2910 is a null-terminated vector containing the following arguments.
2911 The `live_cond' field is:
2913 1 if the switch is true in a conditional spec,
2914 -1 if false (overridden by a later switch)
2915 -2 if this switch should be ignored (used in %{<S})
2916 The `validated' field is nonzero if any spec has looked at this switch;
2917 if it remains zero at the end of the run, it must be meaningless. */
2920 #define SWITCH_FALSE -1
2921 #define SWITCH_IGNORE -2
2922 #define SWITCH_LIVE 1
2929 unsigned char validated;
2930 unsigned char ordering;
2933 static struct switchstr *switches;
2935 static int n_switches;
2940 const char *language;
2943 /* Also a vector of input files specified. */
2945 static struct infile *infiles;
2949 /* This counts the number of libraries added by lang_specific_driver, so that
2950 we can tell if there were any user supplied any files or libraries. */
2952 static int added_libraries;
2954 /* And a vector of corresponding output files is made up later. */
2956 const char **outfiles;
2958 /* Used to track if none of the -B paths are used. */
2961 /* Used to track if standard path isn't used and -b or -V is specified. */
2962 static int warn_std;
2964 /* Gives value to pass as "warn" to add_prefix for standard prefixes. */
2965 static int *warn_std_ptr = 0;
2967 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2969 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2970 is true if we should look for an executable suffix. DO_OBJ
2971 is true if we should look for an object suffix. */
2974 convert_filename (name, do_exe, do_obj)
2976 int do_exe ATTRIBUTE_UNUSED;
2977 int do_obj ATTRIBUTE_UNUSED;
2979 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2987 len = strlen (name);
2989 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2990 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2991 if (do_obj && len > 2
2992 && name[len - 2] == '.'
2993 && name[len - 1] == 'o')
2995 obstack_grow (&obstack, name, len - 2);
2996 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2997 name = obstack_finish (&obstack);
3001 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3002 /* If there is no filetype, make it the executable suffix (which includes
3003 the "."). But don't get confused if we have just "-o". */
3004 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
3007 for (i = len - 1; i >= 0; i--)
3008 if (IS_DIR_SEPARATOR (name[i]))
3011 for (i++; i < len; i++)
3015 obstack_grow (&obstack, name, len);
3016 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
3017 strlen (TARGET_EXECUTABLE_SUFFIX));
3018 name = obstack_finish (&obstack);
3025 /* Display the command line switches accepted by gcc. */
3029 printf (_("Usage: %s [options] file...\n"), programname);
3030 fputs (_("Options:\n"), stdout);
3032 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
3033 fputs (_(" --help Display this information\n"), stdout);
3034 fputs (_(" --target-help Display target specific command line options\n"), stdout);
3036 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
3037 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
3038 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
3039 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
3040 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
3041 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
3042 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
3043 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
3044 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
3046 -print-multi-lib Display the mapping between command line options and\n\
3047 multiple library search directories\n"), stdout);
3048 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3049 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3050 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3051 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3052 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3053 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3054 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3055 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3056 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3057 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3058 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
3059 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
3060 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3061 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3062 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3063 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3064 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3065 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3067 -x <language> Specify the language of the following input files\n\
3068 Permissable languages include: c c++ assembler none\n\
3069 'none' means revert to the default behavior of\n\
3070 guessing the language based on the file's extension\n\
3074 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3075 passed on to the various sub-processes invoked by %s. In order to pass\n\
3076 other options on to these processes the -W<letter> options must be used.\n\
3079 /* The rest of the options are displayed by invocations of the various
3084 add_preprocessor_option (option, len)
3088 n_preprocessor_options++;
3090 if (! preprocessor_options)
3091 preprocessor_options
3092 = (char **) xmalloc (n_preprocessor_options * sizeof (char *));
3094 preprocessor_options
3095 = (char **) xrealloc (preprocessor_options,
3096 n_preprocessor_options * sizeof (char *));
3098 preprocessor_options [n_preprocessor_options - 1] =
3099 save_string (option, len);
3103 add_assembler_option (option, len)
3107 n_assembler_options++;
3109 if (! assembler_options)
3111 = (char **) xmalloc (n_assembler_options * sizeof (char *));
3114 = (char **) xrealloc (assembler_options,
3115 n_assembler_options * sizeof (char *));
3117 assembler_options [n_assembler_options - 1] = save_string (option, len);
3121 add_linker_option (option, len)
3127 if (! linker_options)
3129 = (char **) xmalloc (n_linker_options * sizeof (char *));
3132 = (char **) xrealloc (linker_options,
3133 n_linker_options * sizeof (char *));
3135 linker_options [n_linker_options - 1] = save_string (option, len);
3138 /* Create the vector `switches' and its contents.
3139 Store its length in `n_switches'. */
3142 process_command (argc, argv)
3144 const char *const *argv;
3149 const char *spec_lang = 0;
3150 int last_language_n_infiles;
3153 int lang_n_infiles = 0;
3154 #ifdef MODIFY_TARGET_NAME
3155 int is_modify_target_name;
3159 GET_ENV_PATH_LIST (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3163 added_libraries = 0;
3165 /* Figure compiler version from version string. */
3167 compiler_version = temp1 = xstrdup (version_string);
3169 for (; *temp1; ++temp1)
3178 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3179 see if we can create it from the pathname specified in argv[0]. */
3182 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3183 if (!gcc_exec_prefix)
3185 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
3186 standard_exec_prefix);
3187 if (gcc_exec_prefix)
3188 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3192 if (gcc_exec_prefix)
3194 int len = strlen (gcc_exec_prefix);
3196 if (len > (int) sizeof ("/lib/gcc-lib/") - 1
3197 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3199 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc-lib/") + 1;
3200 if (IS_DIR_SEPARATOR (*temp)
3201 && strncmp (temp + 1, "lib", 3) == 0
3202 && IS_DIR_SEPARATOR (temp[4])
3203 && strncmp (temp + 5, "gcc-lib", 7) == 0)
3204 len -= sizeof ("/lib/gcc-lib/") - 1;
3207 set_std_prefix (gcc_exec_prefix, len);
3208 add_prefix (&exec_prefixes, gcc_exec_prefix, "GCC",
3209 PREFIX_PRIORITY_LAST, 0, NULL);
3210 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3211 PREFIX_PRIORITY_LAST, 0, NULL);
3214 /* COMPILER_PATH and LIBRARY_PATH have values
3215 that are lists of directory names with colons. */
3217 GET_ENV_PATH_LIST (temp, "COMPILER_PATH");
3220 const char *startp, *endp;
3221 char *nstore = (char *) alloca (strlen (temp) + 3);
3223 startp = endp = temp;
3226 if (*endp == PATH_SEPARATOR || *endp == 0)
3228 strncpy (nstore, startp, endp - startp);
3230 strcpy (nstore, concat (".", dir_separator_str, NULL));
3231 else if (!IS_DIR_SEPARATOR (endp[-1]))
3233 nstore[endp - startp] = DIR_SEPARATOR;
3234 nstore[endp - startp + 1] = 0;
3237 nstore[endp - startp] = 0;
3238 add_prefix (&exec_prefixes, nstore, 0,
3239 PREFIX_PRIORITY_LAST, 0, NULL);
3240 add_prefix (&include_prefixes,
3241 concat (nstore, "include", NULL),
3242 0, PREFIX_PRIORITY_LAST, 0, NULL);
3245 endp = startp = endp + 1;
3252 GET_ENV_PATH_LIST (temp, LIBRARY_PATH_ENV);
3253 if (temp && *cross_compile == '0')
3255 const char *startp, *endp;
3256 char *nstore = (char *) alloca (strlen (temp) + 3);
3258 startp = endp = temp;
3261 if (*endp == PATH_SEPARATOR || *endp == 0)
3263 strncpy (nstore, startp, endp - startp);
3265 strcpy (nstore, concat (".", dir_separator_str, NULL));
3266 else if (!IS_DIR_SEPARATOR (endp[-1]))
3268 nstore[endp - startp] = DIR_SEPARATOR;
3269 nstore[endp - startp + 1] = 0;
3272 nstore[endp - startp] = 0;
3273 add_prefix (&startfile_prefixes, nstore, NULL,
3274 PREFIX_PRIORITY_LAST, 0, NULL);
3277 endp = startp = endp + 1;
3284 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3285 GET_ENV_PATH_LIST (temp, "LPATH");
3286 if (temp && *cross_compile == '0')
3288 const char *startp, *endp;
3289 char *nstore = (char *) alloca (strlen (temp) + 3);
3291 startp = endp = temp;
3294 if (*endp == PATH_SEPARATOR || *endp == 0)
3296 strncpy (nstore, startp, endp - startp);
3298 strcpy (nstore, concat (".", dir_separator_str, NULL));
3299 else if (!IS_DIR_SEPARATOR (endp[-1]))
3301 nstore[endp - startp] = DIR_SEPARATOR;
3302 nstore[endp - startp + 1] = 0;
3305 nstore[endp - startp] = 0;
3306 add_prefix (&startfile_prefixes, nstore, NULL,
3307 PREFIX_PRIORITY_LAST, 0, NULL);
3310 endp = startp = endp + 1;
3317 /* Convert new-style -- options to old-style. */
3318 translate_options (&argc, &argv);
3320 /* Do language-specific adjustment/addition of flags. */
3321 lang_specific_driver (&argc, &argv, &added_libraries);
3323 /* Scan argv twice. Here, the first time, just count how many switches
3324 there will be in their vector, and how many input files in theirs.
3325 Also parse any switches that determine the configuration name, such as -b.
3326 Here we also parse the switches that cc itself uses (e.g. -v). */
3328 for (i = 1; i < argc; i++)
3330 if (! strcmp (argv[i], "-dumpspecs"))
3332 struct spec_list *sl;
3334 for (sl = specs; sl; sl = sl->next)
3335 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3336 if (link_command_spec)
3337 printf ("*link_command:\n%s\n\n", link_command_spec);
3340 else if (! strcmp (argv[i], "-dumpversion"))
3342 printf ("%s\n", spec_version);
3345 else if (! strcmp (argv[i], "-dumpmachine"))
3347 printf ("%s\n", spec_machine);
3350 else if (strcmp (argv[i], "-fversion") == 0)
3352 /* translate_options () has turned --version into -fversion. */
3353 printf (_("%s (GCC) %s\n"), programname, version_string);
3354 fputs (_("Copyright (C) 2002 Free Software Foundation, Inc.\n"),
3356 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
3357 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
3361 else if (strcmp (argv[i], "-fhelp") == 0)
3363 /* translate_options () has turned --help into -fhelp. */
3364 print_help_list = 1;
3366 /* We will be passing a dummy file on to the sub-processes. */
3370 /* CPP driver cannot obtain switch from cc1_options. */
3372 add_preprocessor_option ("--help", 6);
3373 add_assembler_option ("--help", 6);
3374 add_linker_option ("--help", 6);
3376 else if (strcmp (argv[i], "-ftarget-help") == 0)
3378 /* translate_options() has turned --target-help into -ftarget-help. */
3379 target_help_flag = 1;
3381 /* We will be passing a dummy file on to the sub-processes. */
3385 /* CPP driver cannot obtain switch from cc1_options. */
3387 add_preprocessor_option ("--target-help", 13);
3388 add_assembler_option ("--target-help", 13);
3389 add_linker_option ("--target-help", 13);
3391 else if (! strcmp (argv[i], "-pass-exit-codes"))
3393 pass_exit_codes = 1;
3396 else if (! strcmp (argv[i], "-print-search-dirs"))
3397 print_search_dirs = 1;
3398 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3399 print_file_name = "libgcc.a";
3400 else if (! strncmp (argv[i], "-print-file-name=", 17))
3401 print_file_name = argv[i] + 17;
3402 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3403 print_prog_name = argv[i] + 17;
3404 else if (! strcmp (argv[i], "-print-multi-lib"))
3405 print_multi_lib = 1;
3406 else if (! strcmp (argv[i], "-print-multi-directory"))
3407 print_multi_directory = 1;
3408 else if (! strncmp (argv[i], "-Wa,", 4))
3411 /* Pass the rest of this option to the assembler. */
3413 /* Split the argument at commas. */
3415 for (j = 4; argv[i][j]; j++)
3416 if (argv[i][j] == ',')
3418 add_assembler_option (argv[i] + prev, j - prev);
3422 /* Record the part after the last comma. */
3423 add_assembler_option (argv[i] + prev, j - prev);
3425 else if (! strncmp (argv[i], "-Wp,", 4))
3428 /* Pass the rest of this option to the preprocessor. */
3430 /* Split the argument at commas. */
3432 for (j = 4; argv[i][j]; j++)
3433 if (argv[i][j] == ',')
3435 add_preprocessor_option (argv[i] + prev, j - prev);
3439 /* Record the part after the last comma. */
3440 add_preprocessor_option (argv[i] + prev, j - prev);
3442 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3443 /* The +e options to the C++ front-end. */
3445 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3448 /* Split the argument at commas. */
3449 for (j = 3; argv[i][j]; j++)
3450 n_infiles += (argv[i][j] == ',');
3452 else if (strcmp (argv[i], "-Xlinker") == 0)
3455 fatal ("argument to `-Xlinker' is missing");
3460 else if (strcmp (argv[i], "-l") == 0)
3463 fatal ("argument to `-l' is missing");
3468 else if (strncmp (argv[i], "-l", 2) == 0)
3470 else if (strcmp (argv[i], "-save-temps") == 0)
3472 save_temps_flag = 1;
3475 else if (strcmp (argv[i], "-specs") == 0)
3477 struct user_specs *user = (struct user_specs *)
3478 xmalloc (sizeof (struct user_specs));
3480 fatal ("argument to `-specs' is missing");
3482 user->next = (struct user_specs *) 0;
3483 user->filename = argv[i];
3484 if (user_specs_tail)
3485 user_specs_tail->next = user;
3487 user_specs_head = user;
3488 user_specs_tail = user;
3490 else if (strncmp (argv[i], "-specs=", 7) == 0)
3492 struct user_specs *user = (struct user_specs *)
3493 xmalloc (sizeof (struct user_specs));
3494 if (strlen (argv[i]) == 7)
3495 fatal ("argument to `-specs=' is missing");
3497 user->next = (struct user_specs *) 0;
3498 user->filename = argv[i] + 7;
3499 if (user_specs_tail)
3500 user_specs_tail->next = user;
3502 user_specs_head = user;
3503 user_specs_tail = user;
3505 else if (strcmp (argv[i], "-time") == 0)
3507 else if (strcmp (argv[i], "-###") == 0)
3509 /* This is similar to -v except that there is no execution
3510 of the commands and the echoed arguments are quoted. It
3511 is intended for use in shell scripts to capture the
3512 driver-generated command line. */
3513 verbose_only_flag++;
3516 else if (argv[i][0] == '-' && argv[i][1] != 0)
3518 const char *p = &argv[i][1];
3525 if (p[1] == 0 && i + 1 == argc)
3526 fatal ("argument to `-b' is missing");
3528 spec_machine = argv[++i];
3530 spec_machine = p + 1;
3532 warn_std_ptr = &warn_std;
3540 if (p[1] == 0 && i + 1 == argc)
3541 fatal ("argument to `-B' is missing");
3547 len = strlen (value);
3549 /* Catch the case where the user has forgotten to append a
3550 directory separator to the path. Note, they may be using
3551 -B to add an executable name prefix, eg "i386-elf-", in
3552 order to distinguish between multiple installations of
3553 GCC in the same directory. Hence we must check to see
3554 if appending a directory separator actually makes a
3555 valid directory name. */
3556 if (! IS_DIR_SEPARATOR (value [len - 1])
3557 && is_directory (value, "", 0))
3559 char *tmp = xmalloc (len + 2);
3560 strcpy (tmp, value);
3561 tmp[len] = DIR_SEPARATOR;
3566 /* As a kludge, if the arg is "[foo/]stageN/", just
3567 add "[foo/]include" to the include prefix. */
3570 && (IS_DIR_SEPARATOR (value[len - 8]))))
3571 && strncmp (value + len - 7, "stage", 5) == 0
3572 && ISDIGIT (value[len - 2])
3573 && (IS_DIR_SEPARATOR (value[len - 1])))
3576 add_prefix (&include_prefixes, "include", NULL,
3577 PREFIX_PRIORITY_B_OPT, 0, NULL);
3580 char * string = xmalloc (len + 1);
3582 strncpy (string, value, len - 7);
3583 strcpy (string + len - 7, "include");
3584 add_prefix (&include_prefixes, string, NULL,
3585 PREFIX_PRIORITY_B_OPT, 0, NULL);
3589 add_prefix (&exec_prefixes, value, NULL,
3590 PREFIX_PRIORITY_B_OPT, 0, &warn_B);
3591 add_prefix (&startfile_prefixes, value, NULL,
3592 PREFIX_PRIORITY_B_OPT, 0, &warn_B);
3593 add_prefix (&include_prefixes, concat (value, "include", NULL),
3594 NULL, PREFIX_PRIORITY_B_OPT, 0, NULL);
3599 case 'v': /* Print our subcommands and print versions. */
3601 /* If they do anything other than exactly `-v', don't set
3602 verbose_flag; rather, continue on to give the error. */
3620 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3625 /* Forward scan, just in case -S or -c is specified
3632 if (argv[j][0] == '-')
3634 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
3640 else if ((skip = SWITCH_TAKES_ARG (argv[j][1])))
3641 j += skip - (argv[j][2] != 0);
3642 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1)))
3649 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3651 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0);
3653 argv[i] = convert_filename (argv[i], ! have_c, 0);
3660 #ifdef MODIFY_TARGET_NAME
3661 is_modify_target_name = 0;
3663 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3664 if (! strcmp (argv[i], modify_target[j].sw))
3667 = (char *) xmalloc (strlen (modify_target[j].str)
3668 + strlen (spec_machine));
3671 int made_addition = 0;
3673 is_modify_target_name = 1;
3674 for (p = spec_machine, q = new_name; *p != 0; )
3676 if (modify_target[j].add_del == DELETE
3677 && (! strncmp (q, modify_target[j].str,
3678 strlen (modify_target[j].str))))
3679 p += strlen (modify_target[j].str);
3680 else if (modify_target[j].add_del == ADD
3681 && ! made_addition && *p == '-')
3683 for (r = modify_target[j].str; *r != 0; )
3691 spec_machine = new_name;
3694 if (is_modify_target_name)
3700 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
3701 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
3702 else if (WORD_SWITCH_TAKES_ARG (p))
3703 i += WORD_SWITCH_TAKES_ARG (p);
3713 if (have_c && have_o && lang_n_infiles > 1)
3714 fatal ("cannot specify -o with -c or -S and multiple compilations");
3716 /* Set up the search paths before we go looking for config files. */
3718 /* These come before the md prefixes so that we will find gcc's subcommands
3719 (such as cpp) rather than those of the host system. */
3720 /* Use 2 as fourth arg meaning try just the machine as a suffix,
3721 as well as trying the machine and the version. */
3723 add_prefix (&exec_prefixes, standard_exec_prefix, "GCC",
3724 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3725 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3726 PREFIX_PRIORITY_LAST, 2, warn_std_ptr);
3727 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS",
3728 PREFIX_PRIORITY_LAST, 2, warn_std_ptr);
3731 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3732 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3733 add_prefix (&startfile_prefixes, standard_exec_prefix_1, "BINUTILS",
3734 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3736 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3737 dir_separator_str, NULL);
3739 /* If tooldir is relative, base it on exec_prefixes. A relative
3740 tooldir lets us move the installed tree as a unit.
3742 If GCC_EXEC_PREFIX is defined, then we want to add two relative
3743 directories, so that we can search both the user specified directory
3744 and the standard place. */
3746 if (!IS_ABSOLUTE_PATHNAME (tooldir_prefix))
3748 if (gcc_exec_prefix)
3750 char *gcc_exec_tooldir_prefix
3751 = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
3752 spec_version, dir_separator_str, tooldir_prefix, NULL);
3754 add_prefix (&exec_prefixes,
3755 concat (gcc_exec_tooldir_prefix, "bin",
3756 dir_separator_str, NULL),
3757 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
3758 add_prefix (&startfile_prefixes,
3759 concat (gcc_exec_tooldir_prefix, "lib",
3760 dir_separator_str, NULL),
3761 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
3764 tooldir_prefix = concat (standard_exec_prefix, spec_machine,
3765 dir_separator_str, spec_version,
3766 dir_separator_str, tooldir_prefix, NULL);
3769 add_prefix (&exec_prefixes,
3770 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3771 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
3772 add_prefix (&startfile_prefixes,
3773 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3774 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
3776 /* More prefixes are enabled in main, after we read the specs file
3777 and determine whether this is cross-compilation or not. */
3779 /* Then create the space for the vectors and scan again. */
3781 switches = ((struct switchstr *)
3782 xmalloc ((n_switches + 1) * sizeof (struct switchstr)));
3783 infiles = (struct infile *) xmalloc ((n_infiles + 1) * sizeof (struct infile));
3786 last_language_n_infiles = -1;
3788 /* This, time, copy the text of each switch and store a pointer
3789 to the copy in the vector of switches.
3790 Store all the infiles in their vector. */
3792 for (i = 1; i < argc; i++)
3794 /* Just skip the switches that were handled by the preceding loop. */
3795 #ifdef MODIFY_TARGET_NAME
3796 is_modify_target_name = 0;
3798 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3799 if (! strcmp (argv[i], modify_target[j].sw))
3800 is_modify_target_name = 1;
3802 if (is_modify_target_name)
3806 if (! strncmp (argv[i], "-Wa,", 4))
3808 else if (! strncmp (argv[i], "-Wp,", 4))
3810 else if (! strcmp (argv[i], "-pass-exit-codes"))
3812 else if (! strcmp (argv[i], "-print-search-dirs"))
3814 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3816 else if (! strncmp (argv[i], "-print-file-name=", 17))
3818 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3820 else if (! strcmp (argv[i], "-print-multi-lib"))
3822 else if (! strcmp (argv[i], "-print-multi-directory"))
3824 else if (! strcmp (argv[i], "-ftarget-help"))
3826 else if (! strcmp (argv[i], "-fhelp"))
3828 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3830 /* Compensate for the +e options to the C++ front-end;
3831 they're there simply for cfront call-compatibility. We do
3832 some magic in default_compilers to pass them down properly.
3833 Note we deliberately start at the `+' here, to avoid passing
3834 -e0 or -e1 down into the linker. */
3835 switches[n_switches].part1 = &argv[i][0];
3836 switches[n_switches].args = 0;
3837 switches[n_switches].live_cond = SWITCH_OK;
3838 switches[n_switches].validated = 0;
3841 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3844 /* Split the argument at commas. */
3846 for (j = 4; argv[i][j]; j++)
3847 if (argv[i][j] == ',')
3849 infiles[n_infiles].language = "*";
3850 infiles[n_infiles++].name
3851 = save_string (argv[i] + prev, j - prev);
3854 /* Record the part after the last comma. */
3855 infiles[n_infiles].language = "*";
3856 infiles[n_infiles++].name = argv[i] + prev;
3858 else if (strcmp (argv[i], "-Xlinker") == 0)
3860 infiles[n_infiles].language = "*";
3861 infiles[n_infiles++].name = argv[++i];
3863 else if (strcmp (argv[i], "-l") == 0)
3864 { /* POSIX allows separation of -l and the lib arg;
3865 canonicalize by concatenating -l with its arg */
3866 infiles[n_infiles].language = "*";
3867 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL);
3869 else if (strncmp (argv[i], "-l", 2) == 0)
3871 infiles[n_infiles].language = "*";
3872 infiles[n_infiles++].name = argv[i];
3874 else if (strcmp (argv[i], "-specs") == 0)
3876 else if (strncmp (argv[i], "-specs=", 7) == 0)
3878 else if (strcmp (argv[i], "-time") == 0)
3880 else if ((save_temps_flag || report_times)
3881 && strcmp (argv[i], "-pipe") == 0)
3883 /* -save-temps overrides -pipe, so that temp files are produced */
3884 if (save_temps_flag)
3885 error ("warning: -pipe ignored because -save-temps specified");
3886 /* -time overrides -pipe because we can't get correct stats when
3887 multiple children are running at once. */
3888 else if (report_times)
3889 error ("warning: -pipe ignored because -time specified");
3891 else if (strcmp (argv[i], "-###") == 0)
3893 else if (argv[i][0] == '-' && argv[i][1] != 0)
3895 const char *p = &argv[i][1];
3900 if (p[1] == 0 && i + 1 == argc)
3901 fatal ("argument to `-x' is missing");
3903 spec_lang = argv[++i];
3906 if (! strcmp (spec_lang, "none"))
3907 /* Suppress the warning if -xnone comes after the last input
3908 file, because alternate command interfaces like g++ might
3909 find it useful to place -xnone after each input file. */
3912 last_language_n_infiles = n_infiles;
3915 switches[n_switches].part1 = p;
3916 /* Deal with option arguments in separate argv elements. */
3917 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
3918 || WORD_SWITCH_TAKES_ARG (p))
3921 int n_args = WORD_SWITCH_TAKES_ARG (p);
3925 /* Count only the option arguments in separate argv elements. */
3926 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
3928 if (i + n_args >= argc)
3929 fatal ("argument to `-%s' is missing", p);
3930 switches[n_switches].args
3931 = (const char **) xmalloc ((n_args + 1) * sizeof(const char *));
3933 switches[n_switches].args[j++] = argv[++i];
3934 /* Null-terminate the vector. */
3935 switches[n_switches].args[j] = 0;
3937 else if (strchr (switches_need_spaces, c))
3939 /* On some systems, ld cannot handle some options without
3940 a space. So split the option from its argument. */
3941 char *part1 = (char *) xmalloc (2);
3945 switches[n_switches].part1 = part1;
3946 switches[n_switches].args
3947 = (const char **) xmalloc (2 * sizeof (const char *));
3948 switches[n_switches].args[0] = xstrdup (p+1);
3949 switches[n_switches].args[1] = 0;
3952 switches[n_switches].args = 0;
3954 switches[n_switches].live_cond = SWITCH_OK;
3955 switches[n_switches].validated = 0;
3956 switches[n_switches].ordering = 0;
3957 /* These are always valid, since gcc.c itself understands it. */
3958 if (!strcmp (p, "save-temps")
3959 || !strcmp (p, "static-libgcc")
3960 || !strcmp (p, "shared-libgcc"))
3961 switches[n_switches].validated = 1;
3964 char ch = switches[n_switches].part1[0];
3965 if (ch == 'b' || ch == 'B')
3966 switches[n_switches].validated = 1;
3972 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3973 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
3976 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
3978 perror_with_name (argv[i]);
3983 infiles[n_infiles].language = spec_lang;
3984 infiles[n_infiles++].name = argv[i];
3989 if (n_infiles == last_language_n_infiles && spec_lang != 0)
3990 error ("warning: `-x %s' after last input file has no effect", spec_lang);
3992 /* Ensure we only invoke each subprocess once. */
3993 if (target_help_flag || print_help_list)
3997 /* Create a dummy input file, so that we can pass --target-help on to
3998 the various sub-processes. */
3999 infiles[0].language = "c";
4000 infiles[0].name = "help-dummy";
4002 if (target_help_flag)
4004 switches[n_switches].part1 = "--target-help";
4005 switches[n_switches].args = 0;
4006 switches[n_switches].live_cond = SWITCH_OK;
4007 switches[n_switches].validated = 0;
4012 if (print_help_list)
4014 switches[n_switches].part1 = "--help";
4015 switches[n_switches].args = 0;
4016 switches[n_switches].live_cond = SWITCH_OK;
4017 switches[n_switches].validated = 0;
4023 switches[n_switches].part1 = 0;
4024 infiles[n_infiles].name = 0;
4027 /* Store switches not filtered out by %{<S} in spec in COLLECT_GCC_OPTIONS
4028 and place that in the environment. */
4031 set_collect_gcc_options ()
4036 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4038 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4039 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4042 for (i = 0; (int) i < n_switches; i++)
4044 const char *const *args;
4047 obstack_grow (&collect_obstack, " ", 1);
4051 /* Ignore elided switches. */
4052 if (switches[i].live_cond == SWITCH_IGNORE)
4055 obstack_grow (&collect_obstack, "'-", 2);
4056 q = switches[i].part1;
4057 while ((p = strchr (q, '\'')))
4059 obstack_grow (&collect_obstack, q, p - q);
4060 obstack_grow (&collect_obstack, "'\\''", 4);
4063 obstack_grow (&collect_obstack, q, strlen (q));
4064 obstack_grow (&collect_obstack, "'", 1);
4066 for (args = switches[i].args; args && *args; args++)
4068 obstack_grow (&collect_obstack, " '", 2);
4070 while ((p = strchr (q, '\'')))
4072 obstack_grow (&collect_obstack, q, p - q);
4073 obstack_grow (&collect_obstack, "'\\''", 4);
4076 obstack_grow (&collect_obstack, q, strlen (q));
4077 obstack_grow (&collect_obstack, "'", 1);
4080 obstack_grow (&collect_obstack, "\0", 1);
4081 putenv (obstack_finish (&collect_obstack));
4084 /* Process a spec string, accumulating and running commands. */
4086 /* These variables describe the input file name.
4087 input_file_number is the index on outfiles of this file,
4088 so that the output file name can be stored for later use by %o.
4089 input_basename is the start of the part of the input file
4090 sans all directory names, and basename_length is the number
4091 of characters starting there excluding the suffix .c or whatever. */
4093 const char *input_filename;
4094 static int input_file_number;
4095 size_t input_filename_length;
4096 static int basename_length;
4097 static int suffixed_basename_length;
4098 static const char *input_basename;
4099 static const char *input_suffix;
4100 static struct stat input_stat;
4101 static int input_stat_set;
4103 /* The compiler used to process the current input file. */
4104 static struct compiler *input_file_compiler;
4106 /* These are variables used within do_spec and do_spec_1. */
4108 /* Nonzero if an arg has been started and not yet terminated
4109 (with space, tab or newline). */
4110 static int arg_going;
4112 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4113 is a temporary file name. */
4114 static int delete_this_arg;
4116 /* Nonzero means %w has been seen; the next arg to be terminated
4117 is the output file name of this compilation. */
4118 static int this_is_output_file;
4120 /* Nonzero means %s has been seen; the next arg to be terminated
4121 is the name of a library file and we should try the standard
4122 search dirs for it. */
4123 static int this_is_library_file;
4125 /* Nonzero means that the input of this command is coming from a pipe. */
4126 static int input_from_pipe;
4128 /* Nonnull means substitute this for any suffix when outputting a switches
4130 static const char *suffix_subst;
4132 /* Process the spec SPEC and run the commands specified therein.
4133 Returns 0 if the spec is successfully processed; -1 if failed. */
4143 delete_this_arg = 0;
4144 this_is_output_file = 0;
4145 this_is_library_file = 0;
4146 input_from_pipe = 0;
4147 suffix_subst = NULL;
4149 value = do_spec_1 (spec, 0, NULL);
4151 /* Force out any unfinished command.
4152 If -pipe, this forces out the last command if it ended in `|'. */
4155 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4158 set_collect_gcc_options ();
4160 if (argbuf_index > 0)
4167 /* Process the sub-spec SPEC as a portion of a larger spec.
4168 This is like processing a whole spec except that we do
4169 not initialize at the beginning and we do not supply a
4170 newline by default at the end.
4171 INSWITCH nonzero means don't process %-sequences in SPEC;
4172 in this case, % is treated as an ordinary character.
4173 This is used while substituting switches.
4174 INSWITCH nonzero also causes SPC not to terminate an argument.
4176 Value is zero unless a line was finished
4177 and the command on that line reported an error. */
4180 do_spec_1 (spec, inswitch, soft_matched_part)
4183 const char *soft_matched_part;
4185 const char *p = spec;
4192 /* If substituting a switch, treat all chars like letters.
4193 Otherwise, NL, SPC, TAB and % are special. */
4194 switch (inswitch ? 'a' : c)
4197 /* End of line: finish any pending argument,
4198 then run the pending command if one has been started. */
4201 obstack_1grow (&obstack, 0);
4202 string = obstack_finish (&obstack);
4203 if (this_is_library_file)
4204 string = find_file (string);
4205 store_arg (string, delete_this_arg, this_is_output_file);
4206 if (this_is_output_file)
4207 outfiles[input_file_number] = string;
4211 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4213 for (i = 0; i < n_switches; i++)
4214 if (!strcmp (switches[i].part1, "pipe"))
4217 /* A `|' before the newline means use a pipe here,
4218 but only if -pipe was specified.
4219 Otherwise, execute now and don't pass the `|' as an arg. */
4222 input_from_pipe = 1;
4223 switches[i].validated = 1;
4230 set_collect_gcc_options ();
4232 if (argbuf_index > 0)
4238 /* Reinitialize for a new command, and for a new argument. */
4241 delete_this_arg = 0;
4242 this_is_output_file = 0;
4243 this_is_library_file = 0;
4244 input_from_pipe = 0;
4248 /* End any pending argument. */
4251 obstack_1grow (&obstack, 0);
4252 string = obstack_finish (&obstack);
4253 if (this_is_library_file)
4254 string = find_file (string);
4255 store_arg (string, delete_this_arg, this_is_output_file);
4256 if (this_is_output_file)
4257 outfiles[input_file_number] = string;
4261 obstack_1grow (&obstack, c);
4267 /* Space or tab ends an argument if one is pending. */
4270 obstack_1grow (&obstack, 0);
4271 string = obstack_finish (&obstack);
4272 if (this_is_library_file)
4273 string = find_file (string);
4274 store_arg (string, delete_this_arg, this_is_output_file);
4275 if (this_is_output_file)
4276 outfiles[input_file_number] = string;
4278 /* Reinitialize for a new argument. */
4280 delete_this_arg = 0;
4281 this_is_output_file = 0;
4282 this_is_library_file = 0;
4289 fatal ("invalid specification! Bug in cc");
4292 obstack_grow (&obstack, input_basename, basename_length);
4297 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4302 delete_this_arg = 2;
4305 /* Dump out the directories specified with LIBRARY_PATH,
4306 followed by the absolute directories
4307 that we search for startfiles. */
4310 struct prefix_list *pl = startfile_prefixes.plist;
4311 size_t bufsize = 100;
4312 char *buffer = (char *) xmalloc (bufsize);
4315 for (; pl; pl = pl->next)
4317 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4318 /* Used on systems which record the specified -L dirs
4319 and use them to search for dynamic linking. */
4320 /* Relative directories always come from -B,
4321 and it is better not to use them for searching
4322 at run time. In particular, stage1 loses. */
4323 if (!IS_ABSOLUTE_PATHNAME (pl->prefix))
4326 /* Try subdirectory if there is one. */
4327 if (multilib_dir != NULL)
4331 if (strlen (pl->prefix) + strlen (machine_suffix)
4333 bufsize = (strlen (pl->prefix)
4334 + strlen (machine_suffix)) * 2 + 1;
4335 buffer = (char *) xrealloc (buffer, bufsize);
4336 strcpy (buffer, pl->prefix);
4337 strcat (buffer, machine_suffix);
4338 if (is_directory (buffer, multilib_dir, 1))
4340 do_spec_1 ("-L", 0, NULL);
4341 #ifdef SPACE_AFTER_L_OPTION
4342 do_spec_1 (" ", 0, NULL);
4344 do_spec_1 (buffer, 1, NULL);
4345 do_spec_1 (multilib_dir, 1, NULL);
4346 /* Make this a separate argument. */
4347 do_spec_1 (" ", 0, NULL);
4350 if (!pl->require_machine_suffix)
4352 if (is_directory (pl->prefix, multilib_dir, 1))
4354 do_spec_1 ("-L", 0, NULL);
4355 #ifdef SPACE_AFTER_L_OPTION
4356 do_spec_1 (" ", 0, NULL);
4358 do_spec_1 (pl->prefix, 1, NULL);
4359 do_spec_1 (multilib_dir, 1, NULL);
4360 /* Make this a separate argument. */
4361 do_spec_1 (" ", 0, NULL);
4367 if (is_directory (pl->prefix, machine_suffix, 1))
4369 do_spec_1 ("-L", 0, NULL);
4370 #ifdef SPACE_AFTER_L_OPTION
4371 do_spec_1 (" ", 0, NULL);
4373 do_spec_1 (pl->prefix, 1, NULL);
4374 /* Remove slash from machine_suffix. */
4375 if (strlen (machine_suffix) >= bufsize)
4376 bufsize = strlen (machine_suffix) * 2 + 1;
4377 buffer = (char *) xrealloc (buffer, bufsize);
4378 strcpy (buffer, machine_suffix);
4379 idx = strlen (buffer);
4380 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4381 buffer[idx - 1] = 0;
4382 do_spec_1 (buffer, 1, NULL);
4383 /* Make this a separate argument. */
4384 do_spec_1 (" ", 0, NULL);
4387 if (!pl->require_machine_suffix)
4389 if (is_directory (pl->prefix, "", 1))
4391 do_spec_1 ("-L", 0, NULL);
4392 #ifdef SPACE_AFTER_L_OPTION
4393 do_spec_1 (" ", 0, NULL);
4395 /* Remove slash from pl->prefix. */
4396 if (strlen (pl->prefix) >= bufsize)
4397 bufsize = strlen (pl->prefix) * 2 + 1;
4398 buffer = (char *) xrealloc (buffer, bufsize);
4399 strcpy (buffer, pl->prefix);
4400 idx = strlen (buffer);
4401 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4402 buffer[idx - 1] = 0;
4403 do_spec_1 (buffer, 1, NULL);
4404 /* Make this a separate argument. */
4405 do_spec_1 (" ", 0, NULL);
4414 /* %efoo means report an error with `foo' as error message
4415 and don't execute any more commands for this file. */
4419 while (*p != 0 && *p != '\n')
4421 buf = (char *) alloca (p - q + 1);
4422 strncpy (buf, q, p - q);
4429 /* %nfoo means report an notice with `foo' on stderr. */
4433 while (*p != 0 && *p != '\n')
4435 buf = (char *) alloca (p - q + 1);
4436 strncpy (buf, q, p - q);
4438 notice ("%s\n", buf);
4448 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is defined,
4449 and it is not a directory, and it is writable, use it.
4450 Otherwise, fall through and treat this like any other
4453 if ((!save_temps_flag)
4454 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4455 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4457 obstack_grow (&obstack, HOST_BIT_BUCKET,
4458 strlen (HOST_BIT_BUCKET));
4459 delete_this_arg = 0;
4468 struct temp_name *t;
4470 const char *suffix = p;
4471 char *saved_suffix = NULL;
4473 while (*p == '.' || ISALPHA ((unsigned char) *p))
4475 suffix_length = p - suffix;
4476 if (p[0] == '%' && p[1] == 'O')
4479 /* We don't support extra suffix characters after %O. */
4480 if (*p == '.' || ISALPHA ((unsigned char) *p))
4482 if (suffix_length == 0)
4483 suffix = TARGET_OBJECT_SUFFIX;
4487 = (char *) xmalloc (suffix_length
4488 + strlen (TARGET_OBJECT_SUFFIX));
4489 strncpy (saved_suffix, suffix, suffix_length);
4490 strcpy (saved_suffix + suffix_length,
4491 TARGET_OBJECT_SUFFIX);
4493 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4496 /* If the input_filename has the same suffix specified
4497 for the %g, %u, or %U, and -save-temps is specified,
4498 we could end up using that file as an intermediate
4499 thus clobbering the user's source file (.e.g.,
4500 gcc -save-temps foo.s would clobber foo.s with the
4501 output of cpp0). So check for this condition and
4502 generate a temp file as the intermediate. */
4504 if (save_temps_flag)
4506 temp_filename_length = basename_length + suffix_length;
4507 temp_filename = alloca (temp_filename_length + 1);
4508 strncpy ((char *) temp_filename, input_basename, basename_length);
4509 strncpy ((char *) temp_filename + basename_length, suffix,
4511 *((char *) temp_filename + temp_filename_length) = '\0';
4512 if (strcmp (temp_filename, input_filename) != 0)
4514 struct stat st_temp;
4516 /* Note, set_input() resets input_stat_set to 0. */
4517 if (input_stat_set == 0)
4519 input_stat_set = stat (input_filename, &input_stat);
4520 if (input_stat_set >= 0)
4524 /* If we have the stat for the input_filename
4525 and we can do the stat for the temp_filename
4526 then the they could still refer to the same
4527 file if st_dev/st_ino's are the same. */
4529 if (input_stat_set != 1
4530 || stat (temp_filename, &st_temp) < 0
4531 || input_stat.st_dev != st_temp.st_dev
4532 || input_stat.st_ino != st_temp.st_ino)
4534 temp_filename = save_string (temp_filename,
4535 temp_filename_length + 1);
4536 obstack_grow (&obstack, temp_filename,
4537 temp_filename_length);
4544 /* See if we already have an association of %g/%u/%U and
4546 for (t = temp_names; t; t = t->next)
4547 if (t->length == suffix_length
4548 && strncmp (t->suffix, suffix, suffix_length) == 0
4549 && t->unique == (c != 'g'))
4552 /* Make a new association if needed. %u and %j
4554 if (t == 0 || c == 'u' || c == 'j')
4558 t = (struct temp_name *) xmalloc (sizeof (struct temp_name));
4559 t->next = temp_names;
4562 t->length = suffix_length;
4565 t->suffix = saved_suffix;
4566 saved_suffix = NULL;
4569 t->suffix = save_string (suffix, suffix_length);
4570 t->unique = (c != 'g');
4571 temp_filename = make_temp_file (t->suffix);
4572 temp_filename_length = strlen (temp_filename);
4573 t->filename = temp_filename;
4574 t->filename_length = temp_filename_length;
4578 free (saved_suffix);
4580 obstack_grow (&obstack, t->filename, t->filename_length);
4581 delete_this_arg = 1;
4587 obstack_grow (&obstack, input_filename, input_filename_length);
4593 struct prefix_list *pl = include_prefixes.plist;
4595 if (gcc_exec_prefix)
4597 do_spec_1 ("-iprefix", 1, NULL);
4598 /* Make this a separate argument. */
4599 do_spec_1 (" ", 0, NULL);
4600 do_spec_1 (gcc_exec_prefix, 1, NULL);
4601 do_spec_1 (" ", 0, NULL);
4604 for (; pl; pl = pl->next)
4606 do_spec_1 ("-isystem", 1, NULL);
4607 /* Make this a separate argument. */
4608 do_spec_1 (" ", 0, NULL);
4609 do_spec_1 (pl->prefix, 1, NULL);
4610 do_spec_1 (" ", 0, NULL);
4617 int max = n_infiles;
4618 max += lang_specific_extra_outfiles;
4620 for (i = 0; i < max; i++)
4622 store_arg (outfiles[i], 0, 0);
4627 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4632 this_is_library_file = 1;
4636 this_is_output_file = 1;
4641 int cur_index = argbuf_index;
4642 /* Handle the {...} following the %W. */
4645 p = handle_braces (p + 1);
4648 /* If any args were output, mark the last one for deletion
4650 if (argbuf_index != cur_index)
4651 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
4655 /* %x{OPTION} records OPTION for %X to output. */
4661 /* Skip past the option value and make a copy. */
4666 string = save_string (p1 + 1, p - p1 - 2);
4668 /* See if we already recorded this option. */
4669 for (i = 0; i < n_linker_options; i++)
4670 if (! strcmp (string, linker_options[i]))
4676 /* This option is new; add it. */
4677 add_linker_option (string, strlen (string));
4681 /* Dump out the options accumulated previously using %x. */
4683 for (i = 0; i < n_linker_options; i++)
4685 do_spec_1 (linker_options[i], 1, NULL);
4686 /* Make each accumulated option a separate argument. */
4687 do_spec_1 (" ", 0, NULL);
4691 /* Dump out the options accumulated previously using -Wa,. */
4693 for (i = 0; i < n_assembler_options; i++)
4695 do_spec_1 (assembler_options[i], 1, NULL);
4696 /* Make each accumulated option a separate argument. */
4697 do_spec_1 (" ", 0, NULL);
4701 /* Dump out the options accumulated previously using -Wp,. */
4703 for (i = 0; i < n_preprocessor_options; i++)
4705 do_spec_1 (preprocessor_options[i], 1, NULL);
4706 /* Make each accumulated option a separate argument. */
4707 do_spec_1 (" ", 0, NULL);
4711 /* Here are digits and numbers that just process
4712 a certain constant string as a spec. */
4715 value = do_spec_1 (cc1_spec, 0, NULL);
4721 value = do_spec_1 (cc1plus_spec, 0, NULL);
4727 value = do_spec_1 (asm_spec, 0, NULL);
4733 value = do_spec_1 (asm_final_spec, 0, NULL);
4740 const char *const spec
4741 = (input_file_compiler->cpp_spec
4742 ? input_file_compiler->cpp_spec
4744 value = do_spec_1 (spec, 0, NULL);
4751 value = do_spec_1 (endfile_spec, 0, NULL);
4757 value = do_spec_1 (link_spec, 0, NULL);
4763 value = do_spec_1 (lib_spec, 0, NULL);
4769 value = do_spec_1 (libgcc_spec, 0, NULL);
4775 if (multilib_dir && strcmp (multilib_dir, ".") != 0)
4781 len = strlen (multilib_dir);
4782 obstack_blank (&obstack, len + 1);
4783 p = obstack_next_free (&obstack) - (len + 1);
4786 for (q = multilib_dir; *q ; ++q, ++p)
4787 *p = (IS_DIR_SEPARATOR (*q) ? '_' : *q);
4793 char *x = (char *) alloca (strlen (cpp_predefines) + 1);
4797 /* Copy all of the -D options in CPP_PREDEFINES into BUF. */
4801 if (! strncmp (y, "-D", 2))
4802 /* Copy the whole option. */
4803 while (*y && *y != ' ' && *y != '\t')
4805 else if (*y == ' ' || *y == '\t')
4806 /* Copy whitespace to the result. */
4808 /* Don't copy other options. */
4815 value = do_spec_1 (buf, 0, NULL);
4823 char *x = (char *) alloca (strlen (cpp_predefines) * 4 + 1);
4827 /* Copy all of CPP_PREDEFINES into BUF,
4828 but force them all into the reserved name space if they
4829 aren't already there. The reserved name space is all
4830 identifiers beginning with two underscores or with one
4831 underscore and a capital letter. We do the forcing by
4832 adding up to two underscores to the beginning and end
4833 of each symbol. e.g. mips, _mips, mips_, and _mips_ all
4838 if (! strncmp (y, "-D", 2))
4847 && ! ISUPPER ((unsigned char) *(y + 1))))
4849 /* Stick __ at front of macro name. */
4853 /* Arrange to stick __ at the end as well. */
4857 /* Copy the macro name. */
4858 while (*y && *y != '=' && *y != ' ' && *y != '\t')
4871 /* Copy the value given, if any. */
4872 while (*y && *y != ' ' && *y != '\t')
4875 else if (*y == ' ' || *y == '\t')
4876 /* Copy whitespace to the result. */
4878 /* Don't copy -A options */
4884 /* Copy all of CPP_PREDEFINES into BUF,
4885 but put __ after every -D. */
4889 if (! strncmp (y, "-D", 2))
4895 && ! ISUPPER ((unsigned char) *(y + 1))))
4897 /* Stick -D__ at front of macro name. */
4904 /* Copy the macro name. */
4905 while (*y && *y != '=' && *y != ' ' && *y != '\t')
4908 /* Copy the value given, if any. */
4909 while (*y && *y != ' ' && *y != '\t')
4914 /* Do not copy this macro - we have just done it before */
4915 while (*y && *y != ' ' && *y != '\t')
4919 else if (*y == ' ' || *y == '\t')
4920 /* Copy whitespace to the result. */
4922 /* Don't copy -A options. */
4928 /* Copy all of the -A options in CPP_PREDEFINES into BUF. */
4932 if (! strncmp (y, "-A", 2))
4933 /* Copy the whole option. */
4934 while (*y && *y != ' ' && *y != '\t')
4936 else if (*y == ' ' || *y == '\t')
4937 /* Copy whitespace to the result. */
4939 /* Don't copy other options. */
4946 value = do_spec_1 (buf, 0, NULL);
4953 value = do_spec_1 (startfile_spec, 0, NULL);
4958 /* Here we define characters other than letters and digits. */
4961 p = handle_braces (p);
4967 obstack_1grow (&obstack, '%');
4974 while (p[len] && p[len] != ' ' && p[len] != '%')
4976 suffix_subst = save_string (p - 1, len + 1);
4982 if (soft_matched_part)
4984 do_spec_1 (soft_matched_part, 1, NULL);
4985 do_spec_1 (" ", 0, NULL);
4988 /* Catch the case where a spec string contains something like
4989 '%{foo:%*}'. ie there is no * in the pattern on the left
4990 hand side of the :. */
4991 error ("spec failure: '%%*' has not been initialized by pattern match");
4994 /* Process a string found as the value of a spec given by name.
4995 This feature allows individual machine descriptions
4996 to add and use their own specs.
4997 %[...] modifies -D options the way %P does;
4998 %(...) uses the spec unmodified. */
5000 error ("warning: use of obsolete %%[ operator in specs");
5003 const char *name = p;
5004 struct spec_list *sl;
5007 /* The string after the S/P is the name of a spec that is to be
5009 while (*p && *p != ')' && *p != ']')
5012 /* See if it's in the list. */
5013 for (len = p - name, sl = specs; sl; sl = sl->next)
5014 if (sl->name_len == len && !strncmp (sl->name, name, len))
5016 name = *(sl->ptr_spec);
5018 notice ("Processing spec %c%s%c, which is '%s'\n",
5019 c, sl->name, (c == '(') ? ')' : ']', name);
5028 value = do_spec_1 (name, 0, NULL);
5034 char *x = (char *) alloca (strlen (name) * 2 + 1);
5036 const char *y = name;
5039 /* Copy all of NAME into BUF, but put __ after
5040 every -D and at the end of each arg. */
5043 if (! strncmp (y, "-D", 2))
5054 && (*y == ' ' || *y == '\t' || *y == '='
5055 || *y == '}' || *y == 0))
5068 value = do_spec_1 (buf, 0, NULL);
5074 /* Discard the closing paren or bracket. */
5082 int c1 = *p++; /* Select first or second version number. */
5083 const char *v = compiler_version;
5085 static const char zeroc = '0';
5087 /* The format of the version string is
5088 ([^0-9]*-)?[0-9]+[.][0-9]+([.][0-9]+)?([- ].*)? */
5090 /* Ignore leading non-digits. i.e. "foo-" in "foo-2.7.2". */
5091 while (! ISDIGIT (*v))
5093 if (v > compiler_version && v[-1] != '-')
5096 /* If desired, advance to second version number. */
5099 /* Set V after the first period. */
5100 while (ISDIGIT (*v))
5107 /* If desired, advance to third version number.
5108 But don't complain if it's not present */
5111 /* Set V after the second period. */
5112 while (ISDIGIT (*v))
5114 if ((*v != 0) && (*v != ' ') && (*v != '.') && (*v != '-'))
5120 /* Set Q at the next period or at the end. */
5122 while (ISDIGIT (*q))
5124 if (*q != 0 && q > v && *q != ' ' && *q != '.' && *q != '-')
5128 /* Put that part into the command. */
5129 obstack_grow (&obstack, v, q - v);
5131 /* Default to "0" */
5132 obstack_grow (&obstack, &zeroc, 1);
5138 if (input_from_pipe)
5139 do_spec_1 ("-", 0, NULL);
5143 error ("spec failure: unrecognized spec option '%c'", c);
5149 /* Backslash: treat next character as ordinary. */
5154 /* Ordinary character: put it into the current argument. */
5155 obstack_1grow (&obstack, c);
5159 /* End of string. */
5163 /* Return 0 if we call do_spec_1 and that returns -1. */
5169 const char *filter, *body = NULL, *endbody = NULL;
5171 int true_once = 0; /* If, in %{a|b:d}, at least one of a,b was seen. */
5174 int include_blanks = 1;
5175 int elide_switch = 0;
5180 /* A '^' after the open-brace means to not give blanks before args. */
5187 /* A `|' after the open-brace means,
5188 if the test fails, output a single minus sign rather than nothing.
5189 This is used in %{|!pipe:...}. */
5196 /* A `<' after the open-brace means that the switch should be
5197 removed from the command-line. */
5203 negate = suffix = 0;
5206 /* A `!' after the open-brace negates the condition:
5207 succeed if the specified switch is not present. */
5211 /* A `.' after the open-brace means test against the current suffix. */
5220 if (elide_switch && (negate || pipe_p || suffix))
5222 /* It doesn't make sense to mix elision with other flags. We
5223 could fatal() here, but the standard seems to be to abort. */
5229 while (*p != ':' && *p != '}' && *p != '|' && *p != '&')
5232 if (*p == '|' && (pipe_p || ordered))
5237 if (*p != '}' && *p != '&')
5253 fatal ("mismatched braces in specs");
5259 body = p, endbody = p + 1;
5264 int found = (input_suffix != 0
5265 && (long) strlen (input_suffix) == (long) (p - filter)
5266 && strncmp (input_suffix, filter, p - filter) == 0);
5272 && do_spec_1 (save_string (body, endbody-body-1), 0, NULL) < 0)
5275 else if (p[-1] == '*' && (p[0] == '}' || p[0] == '&'))
5277 /* Substitute all matching switches as separate args. */
5280 for (i = 0; i < n_switches; i++)
5281 if (!strncmp (switches[i].part1, filter, p - 1 - filter)
5282 && check_live_switch (i, p - 1 - filter))
5286 switches[i].live_cond = SWITCH_IGNORE;
5287 switches[i].validated = 1;
5290 ordered = 1, switches[i].ordering = 1;
5295 /* Test for presence of the specified switch. */
5299 /* If name specified ends in *, as in {x*:...},
5300 check for %* and handle that case. */
5301 if (p[-1] == '*' && !negate)
5304 const char *r = body;
5306 /* First see whether we have %*. */
5310 if (*r == '%' && r[1] == '*')
5314 /* If we do, handle that case. */
5317 /* Substitute all matching switches as separate args.
5318 But do this by substituting for %*
5319 in the text that follows the colon. */
5321 unsigned hard_match_len = p - filter - 1;
5322 char *string = save_string (body, endbody - body - 1);
5324 for (i = 0; i < n_switches; i++)
5325 if (!strncmp (switches[i].part1, filter, hard_match_len)
5326 && check_live_switch (i, -1))
5328 do_spec_1 (string, 0, &switches[i].part1[hard_match_len]);
5329 /* Pass any arguments this switch has. */
5330 give_switch (i, 1, 1);
5331 suffix_subst = NULL;
5334 /* We didn't match. Try again. */
5341 /* If name specified ends in *, as in {x*:...},
5342 check for presence of any switch name starting with x. */
5345 for (i = 0; i < n_switches; i++)
5347 unsigned hard_match_len = p - filter - 1;
5349 if (!strncmp (switches[i].part1, filter, hard_match_len)
5350 && check_live_switch (i, hard_match_len))
5357 /* Otherwise, check for presence of exact name specified. */
5360 for (i = 0; i < n_switches; i++)
5362 if (!strncmp (switches[i].part1, filter, p - filter)
5363 && switches[i].part1[p - filter] == 0
5364 && check_live_switch (i, -1))
5372 /* If it is as desired (present for %{s...}, absent for %{!s...})
5373 then substitute either the switch or the specified
5374 conditional text. */
5375 if (present != negate)
5379 switches[i].live_cond = SWITCH_IGNORE;
5380 switches[i].validated = 1;
5382 else if (ordered || *p == '&')
5383 ordered = 1, switches[i].ordering = 1;
5385 give_switch (i, 0, include_blanks);
5387 /* Even if many alternatives are matched, only output once. */
5392 /* Here if a %{|...} conditional fails: output a minus sign,
5393 which means "standard output" or "standard input". */
5394 do_spec_1 ("-", 0, NULL);
5399 /* We didn't match; try again. */
5406 goto next_ampersand;
5412 /* Doing this set of switches later preserves their command-line
5413 ordering. This is needed for e.g. -U, -D and -A. */
5414 for (i = 0; i < n_switches; i++)
5415 if (switches[i].ordering == 1)
5417 switches[i].ordering = 0;
5418 give_switch (i, 0, include_blanks);
5421 /* Process the spec just once, regardless of match count. */
5424 if (do_spec_1 (save_string (body, endbody - body - 1),
5432 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5433 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5434 spec, or -1 if either exact match or %* is used.
5436 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5437 whose value does not begin with "no-" is obsoleted by the same value
5438 with the "no-", similarly for a switch with the "no-" prefix. */
5441 check_live_switch (switchnum, prefix_length)
5445 const char *name = switches[switchnum].part1;
5448 /* In the common case of {<at-most-one-letter>*}, a negating
5449 switch would always match, so ignore that case. We will just
5450 send the conflicting switches to the compiler phase. */
5451 if (prefix_length >= 0 && prefix_length <= 1)
5454 /* If we already processed this switch and determined if it was
5455 live or not, return our past determination. */
5456 if (switches[switchnum].live_cond != 0)
5457 return switches[switchnum].live_cond > 0;
5459 /* Now search for duplicate in a manner that depends on the name. */
5463 for (i = switchnum + 1; i < n_switches; i++)
5464 if (switches[i].part1[0] == 'O')
5466 switches[switchnum].validated = 1;
5467 switches[switchnum].live_cond = SWITCH_FALSE;
5472 case 'W': case 'f': case 'm':
5473 if (! strncmp (name + 1, "no-", 3))
5475 /* We have Xno-YYY, search for XYYY. */
5476 for (i = switchnum + 1; i < n_switches; i++)
5477 if (switches[i].part1[0] == name[0]
5478 && ! strcmp (&switches[i].part1[1], &name[4]))
5480 switches[switchnum].validated = 1;
5481 switches[switchnum].live_cond = SWITCH_FALSE;
5487 /* We have XYYY, search for Xno-YYY. */
5488 for (i = switchnum + 1; i < n_switches; i++)
5489 if (switches[i].part1[0] == name[0]
5490 && switches[i].part1[1] == 'n'
5491 && switches[i].part1[2] == 'o'
5492 && switches[i].part1[3] == '-'
5493 && !strcmp (&switches[i].part1[4], &name[1]))
5495 switches[switchnum].validated = 1;
5496 switches[switchnum].live_cond = SWITCH_FALSE;
5503 /* Otherwise the switch is live. */
5504 switches[switchnum].live_cond = SWITCH_LIVE;
5508 /* Pass a switch to the current accumulating command
5509 in the same form that we received it.
5510 SWITCHNUM identifies the switch; it is an index into
5511 the vector of switches gcc received, which is `switches'.
5512 This cannot fail since it never finishes a command line.
5514 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument.
5516 If INCLUDE_BLANKS is nonzero, then we include blanks before each argument
5520 give_switch (switchnum, omit_first_word, include_blanks)
5522 int omit_first_word;
5525 if (switches[switchnum].live_cond == SWITCH_IGNORE)
5528 if (!omit_first_word)
5530 do_spec_1 ("-", 0, NULL);
5531 do_spec_1 (switches[switchnum].part1, 1, NULL);
5534 if (switches[switchnum].args != 0)
5537 for (p = switches[switchnum].args; *p; p++)
5539 const char *arg = *p;
5542 do_spec_1 (" ", 0, NULL);
5545 unsigned length = strlen (arg);
5548 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5549 if (arg[length] == '.')
5551 ((char *)arg)[length] = 0;
5555 do_spec_1 (arg, 1, NULL);
5557 ((char *)arg)[length] = '.';
5558 do_spec_1 (suffix_subst, 1, NULL);
5561 do_spec_1 (arg, 1, NULL);
5565 do_spec_1 (" ", 0, NULL);
5566 switches[switchnum].validated = 1;
5569 /* Search for a file named NAME trying various prefixes including the
5570 user's -B prefix and some standard ones.
5571 Return the absolute file name found. If nothing is found, return NAME. */
5579 /* Try multilib_dir if it is defined. */
5580 if (multilib_dir != NULL)
5582 const char *const try = ACONCAT ((multilib_dir, dir_separator_str, name, NULL));
5584 newname = find_a_file (&startfile_prefixes, try, R_OK);
5586 /* If we don't find it in the multi library dir, then fall
5587 through and look for it in the normal places. */
5588 if (newname != NULL)
5592 newname = find_a_file (&startfile_prefixes, name, R_OK);
5593 return newname ? newname : name;
5596 /* Determine whether a directory exists. If LINKER, return 0 for
5597 certain fixed names not needed by the linker. If not LINKER, it is
5598 only important to return 0 if the host machine has a small ARG_MAX
5602 is_directory (path1, path2, linker)
5607 int len1 = strlen (path1);
5608 int len2 = strlen (path2);
5609 char *path = (char *) alloca (3 + len1 + len2);
5613 #ifndef SMALL_ARG_MAX
5618 /* Construct the path from the two parts. Ensure the string ends with "/.".
5619 The resulting path will be a directory even if the given path is a
5621 memcpy (path, path1, len1);
5622 memcpy (path + len1, path2, len2);
5623 cp = path + len1 + len2;
5624 if (!IS_DIR_SEPARATOR (cp[-1]))
5625 *cp++ = DIR_SEPARATOR;
5629 /* Exclude directories that the linker is known to search. */
5632 && strcmp (path, concat (dir_separator_str, "lib",
5633 dir_separator_str, ".", NULL)) == 0)
5635 && strcmp (path, concat (dir_separator_str, "usr",
5636 dir_separator_str, "lib",
5637 dir_separator_str, ".", NULL)) == 0)))
5640 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5643 /* Set up the various global variables to indicate that we're processing
5644 the input file named FILENAME. */
5647 set_input (filename)
5648 const char *filename;
5652 input_filename = filename;
5653 input_filename_length = strlen (input_filename);
5655 input_basename = input_filename;
5656 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
5657 /* Skip drive name so 'x:foo' is handled properly. */
5658 if (input_basename[1] == ':')
5659 input_basename += 2;
5661 for (p = input_basename; *p; p++)
5662 if (IS_DIR_SEPARATOR (*p))
5663 input_basename = p + 1;
5665 /* Find a suffix starting with the last period,
5666 and set basename_length to exclude that suffix. */
5667 basename_length = strlen (input_basename);
5668 suffixed_basename_length = basename_length;
5669 p = input_basename + basename_length;
5670 while (p != input_basename && *p != '.')
5672 if (*p == '.' && p != input_basename)
5674 basename_length = p - input_basename;
5675 input_suffix = p + 1;
5680 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5681 we will need to do a stat on the input_filename. The
5682 INPUT_STAT_SET signals that the stat is needed. */
5686 /* On fatal signals, delete all the temporary files. */
5689 fatal_error (signum)
5692 signal (signum, SIG_DFL);
5693 delete_failure_queue ();
5694 delete_temp_files ();
5695 /* Get the same signal again, this time not handled,
5696 so its normal effect occurs. */
5697 kill (getpid (), signum);
5700 extern int main PARAMS ((int, const char *const *));
5705 const char *const *argv;
5709 int linker_was_run = 0;
5710 char *explicit_link_files;
5713 struct user_specs *uptr;
5715 p = argv[0] + strlen (argv[0]);
5716 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
5720 xmalloc_set_program_name (programname);
5722 #ifdef GCC_DRIVER_HOST_INITIALIZATION
5723 /* Perform host dependent initialization when needed. */
5724 GCC_DRIVER_HOST_INITIALIZATION;
5727 gcc_init_libintl ();
5729 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
5730 signal (SIGINT, fatal_error);
5732 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
5733 signal (SIGHUP, fatal_error);
5735 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
5736 signal (SIGTERM, fatal_error);
5738 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
5739 signal (SIGPIPE, fatal_error);
5742 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
5743 receive the signal. A different setting is inheritable */
5744 signal (SIGCHLD, SIG_DFL);
5748 argbuf = (const char **) xmalloc (argbuf_length * sizeof (const char *));
5750 obstack_init (&obstack);
5752 /* Build multilib_select, et. al from the separate lines that make up each
5753 multilib selection. */
5755 const char *const *q = multilib_raw;
5758 obstack_init (&multilib_obstack);
5759 while ((p = *q++) != (char *) 0)
5760 obstack_grow (&multilib_obstack, p, strlen (p));
5762 obstack_1grow (&multilib_obstack, 0);
5763 multilib_select = obstack_finish (&multilib_obstack);
5765 q = multilib_matches_raw;
5766 while ((p = *q++) != (char *) 0)
5767 obstack_grow (&multilib_obstack, p, strlen (p));
5769 obstack_1grow (&multilib_obstack, 0);
5770 multilib_matches = obstack_finish (&multilib_obstack);
5772 q = multilib_exclusions_raw;
5773 while ((p = *q++) != (char *) 0)
5774 obstack_grow (&multilib_obstack, p, strlen (p));
5776 obstack_1grow (&multilib_obstack, 0);
5777 multilib_exclusions = obstack_finish (&multilib_obstack);
5780 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
5783 obstack_1grow (&multilib_obstack, ' ');
5784 obstack_grow (&multilib_obstack,
5785 multilib_defaults_raw[i],
5786 strlen (multilib_defaults_raw[i]));
5790 obstack_1grow (&multilib_obstack, 0);
5791 multilib_defaults = obstack_finish (&multilib_obstack);
5794 /* Set up to remember the pathname of gcc and any options
5795 needed for collect. We use argv[0] instead of programname because
5796 we need the complete pathname. */
5797 obstack_init (&collect_obstack);
5798 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
5799 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
5800 putenv (obstack_finish (&collect_obstack));
5802 #ifdef INIT_ENVIRONMENT
5803 /* Set up any other necessary machine specific environment variables. */
5804 putenv (INIT_ENVIRONMENT);
5807 /* Make a table of what switches there are (switches, n_switches).
5808 Make a table of specified input files (infiles, n_infiles).
5809 Decode switches that are handled locally. */
5811 process_command (argc, argv);
5813 /* Initialize the vector of specs to just the default.
5814 This means one element containing 0s, as a terminator. */
5816 compilers = (struct compiler *) xmalloc (sizeof default_compilers);
5817 memcpy ((char *) compilers, (char *) default_compilers,
5818 sizeof default_compilers);
5819 n_compilers = n_default_compilers;
5821 /* Read specs from a file if there is one. */
5823 machine_suffix = concat (spec_machine, dir_separator_str,
5824 spec_version, dir_separator_str, NULL);
5825 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
5827 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK);
5828 /* Read the specs file unless it is a default one. */
5829 if (specs_file != 0 && strcmp (specs_file, "specs"))
5830 read_specs (specs_file, TRUE);
5834 /* We need to check standard_exec_prefix/just_machine_suffix/specs
5835 for any override of as, ld and libraries. */
5836 specs_file = (char *) alloca (strlen (standard_exec_prefix)
5837 + strlen (just_machine_suffix)
5838 + sizeof ("specs"));
5840 strcpy (specs_file, standard_exec_prefix);
5841 strcat (specs_file, just_machine_suffix);
5842 strcat (specs_file, "specs");
5843 if (access (specs_file, R_OK) == 0)
5844 read_specs (specs_file, TRUE);
5846 /* If not cross-compiling, look for startfiles in the standard places. */
5847 if (*cross_compile == '0')
5849 if (*md_exec_prefix)
5851 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
5852 PREFIX_PRIORITY_LAST, 0, NULL);
5853 add_prefix (&startfile_prefixes, md_exec_prefix, "GCC",
5854 PREFIX_PRIORITY_LAST, 0, NULL);
5857 if (*md_startfile_prefix)
5858 add_prefix (&startfile_prefixes, md_startfile_prefix, "GCC",
5859 PREFIX_PRIORITY_LAST, 0, NULL);
5861 if (*md_startfile_prefix_1)
5862 add_prefix (&startfile_prefixes, md_startfile_prefix_1, "GCC",
5863 PREFIX_PRIORITY_LAST, 0, NULL);
5865 /* If standard_startfile_prefix is relative, base it on
5866 standard_exec_prefix. This lets us move the installed tree
5867 as a unit. If GCC_EXEC_PREFIX is defined, base
5868 standard_startfile_prefix on that as well. */
5869 if (IS_ABSOLUTE_PATHNAME (standard_startfile_prefix))
5870 add_prefix (&startfile_prefixes, standard_startfile_prefix, "BINUTILS",
5871 PREFIX_PRIORITY_LAST, 0, NULL);
5874 if (gcc_exec_prefix)
5875 add_prefix (&startfile_prefixes,
5876 concat (gcc_exec_prefix, machine_suffix,
5877 standard_startfile_prefix, NULL),
5878 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
5879 add_prefix (&startfile_prefixes,
5880 concat (standard_exec_prefix,
5882 standard_startfile_prefix, NULL),
5883 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
5886 add_prefix (&startfile_prefixes, standard_startfile_prefix_1,
5887 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
5888 add_prefix (&startfile_prefixes, standard_startfile_prefix_2,
5889 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
5890 #if 0 /* Can cause surprises, and one can use -B./ instead. */
5891 add_prefix (&startfile_prefixes, "./", NULL,
5892 PREFIX_PRIORITY_LAST, 1, NULL);
5897 if (!IS_ABSOLUTE_PATHNAME (standard_startfile_prefix)
5899 add_prefix (&startfile_prefixes,
5900 concat (gcc_exec_prefix, machine_suffix,
5901 standard_startfile_prefix, NULL),
5902 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
5905 /* Process any user specified specs in the order given on the command
5907 for (uptr = user_specs_head; uptr; uptr = uptr->next)
5909 char *filename = find_a_file (&startfile_prefixes, uptr->filename, R_OK);
5910 read_specs (filename ? filename : uptr->filename, FALSE);
5913 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
5914 if (gcc_exec_prefix)
5915 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
5916 spec_version, dir_separator_str, NULL);
5918 /* Now we have the specs.
5919 Set the `valid' bits for switches that match anything in any spec. */
5921 validate_all_switches ();
5923 /* Now that we have the switches and the specs, set
5924 the subdirectory based on the options. */
5925 set_multilib_dir ();
5927 /* Warn about any switches that no pass was interested in. */
5929 for (i = 0; (int) i < n_switches; i++)
5930 if (! switches[i].validated)
5931 error ("unrecognized option `-%s'", switches[i].part1);
5933 /* Obey some of the options. */
5935 if (print_search_dirs)
5937 printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix);
5938 printf (_("programs: %s\n"), build_search_list (&exec_prefixes, "", 0));
5939 printf (_("libraries: %s\n"), build_search_list (&startfile_prefixes, "", 0));
5943 if (print_file_name)
5945 printf ("%s\n", find_file (print_file_name));
5949 if (print_prog_name)
5951 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK);
5952 printf ("%s\n", (newname ? newname : print_prog_name));
5956 if (print_multi_lib)
5958 print_multilib_info ();
5962 if (print_multi_directory)
5964 if (multilib_dir == NULL)
5967 printf ("%s\n", multilib_dir);
5971 if (target_help_flag)
5973 /* Print if any target specific options. */
5975 /* We do not exit here. Instead we have created a fake input file
5976 called 'target-dummy' which needs to be compiled, and we pass this
5977 on to the various sub-processes, along with the --target-help
5981 if (print_help_list)
5987 printf (_("\nFor bug reporting instructions, please see:\n"));
5988 printf ("%s.\n", GCCBUGURL);
5993 /* We do not exit here. Instead we have created a fake input file
5994 called 'help-dummy' which needs to be compiled, and we pass this
5995 on the various sub-processes, along with the --help switch. */
6003 notice ("Configured with: %s\n", configuration_arguments);
6005 #ifdef THREAD_MODEL_SPEC
6006 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6007 but there's no point in doing all this processing just to get
6008 thread_model back. */
6009 obstack_init (&obstack);
6010 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6011 obstack_1grow (&obstack, '\0');
6012 thrmod = obstack_finish (&obstack);
6014 thrmod = thread_model;
6017 notice ("Thread model: %s\n", thrmod);
6019 /* compiler_version is truncated at the first space when initialized
6020 from version string, so truncate version_string at the first space
6021 before comparing. */
6022 for (n = 0; version_string[n]; n++)
6023 if (version_string[n] == ' ')
6026 if (! strncmp (version_string, compiler_version, n)
6027 && compiler_version[n] == 0)
6028 notice ("gcc version %s\n", version_string);
6030 notice ("gcc driver version %s executing gcc version %s\n",
6031 version_string, compiler_version);
6037 if (n_infiles == added_libraries)
6038 fatal ("no input files");
6040 /* Make a place to record the compiler output file names
6041 that correspond to the input files. */
6044 i += lang_specific_extra_outfiles;
6045 outfiles = (const char **) xcalloc (i, sizeof (char *));
6047 /* Record which files were specified explicitly as link input. */
6049 explicit_link_files = xcalloc (1, n_infiles);
6051 for (i = 0; (int) i < n_infiles; i++)
6053 int this_file_error = 0;
6055 /* Tell do_spec what to substitute for %i. */
6057 input_file_number = i;
6058 set_input (infiles[i].name);
6060 /* Use the same thing in %o, unless cp->spec says otherwise. */
6062 outfiles[i] = input_filename;
6064 /* Figure out which compiler from the file's suffix. */
6067 = lookup_compiler (infiles[i].name, input_filename_length,
6068 infiles[i].language);
6070 if (input_file_compiler)
6072 /* Ok, we found an applicable compiler. Run its spec. */
6074 if (input_file_compiler->spec[0] == '#')
6076 error ("%s: %s compiler not installed on this system",
6077 input_filename, &input_file_compiler->spec[1]);
6078 this_file_error = 1;
6082 value = do_spec (input_file_compiler->spec);
6084 this_file_error = 1;
6088 /* If this file's name does not contain a recognized suffix,
6089 record it as explicit linker input. */
6092 explicit_link_files[i] = 1;
6094 /* Clear the delete-on-failure queue, deleting the files in it
6095 if this compilation failed. */
6097 if (this_file_error)
6099 delete_failure_queue ();
6102 /* If this compilation succeeded, don't delete those files later. */
6103 clear_failure_queue ();
6106 /* Reset the output file name to the first input file name, for use
6107 with %b in LINK_SPEC on a target that prefers not to emit a.out
6110 set_input (infiles[0].name);
6112 if (error_count == 0)
6114 /* Make sure INPUT_FILE_NUMBER points to first available open
6116 input_file_number = n_infiles;
6117 if (lang_specific_pre_link ())
6121 /* Run ld to link all the compiler output files. */
6123 if (error_count == 0)
6125 int tmp = execution_count;
6127 /* We'll use ld if we can't find collect2. */
6128 if (! strcmp (linker_name_spec, "collect2"))
6130 char *s = find_a_file (&exec_prefixes, "collect2", X_OK);
6132 linker_name_spec = "ld";
6134 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6136 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH");
6137 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV);
6139 value = do_spec (link_command_spec);
6142 linker_was_run = (tmp != execution_count);
6145 /* If options said don't run linker,
6146 complain about input files to be given to the linker. */
6148 if (! linker_was_run && error_count == 0)
6149 for (i = 0; (int) i < n_infiles; i++)
6150 if (explicit_link_files[i])
6151 error ("%s: linker input file unused because linking not done",
6154 /* Delete some or all of the temporary files we made. */
6157 delete_failure_queue ();
6158 delete_temp_files ();
6160 if (print_help_list)
6162 printf (("\nFor bug reporting instructions, please see:\n"));
6163 printf ("%s\n", GCCBUGURL);
6166 return (signal_count != 0 ? 2
6167 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
6171 /* Find the proper compilation spec for the file name NAME,
6172 whose length is LENGTH. LANGUAGE is the specified language,
6173 or 0 if this file is to be passed to the linker. */
6175 static struct compiler *
6176 lookup_compiler (name, length, language)
6179 const char *language;
6181 struct compiler *cp;
6183 /* If this was specified by the user to be a linker input, indicate that. */
6184 if (language != 0 && language[0] == '*')
6187 /* Otherwise, look for the language, if one is spec'd. */
6190 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6191 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6194 error ("language %s not recognized", language);
6198 /* Look for a suffix. */
6199 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6201 if (/* The suffix `-' matches only the file name `-'. */
6202 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6203 || (strlen (cp->suffix) < length
6204 /* See if the suffix matches the end of NAME. */
6205 && !strcmp (cp->suffix,
6206 name + length - strlen (cp->suffix))
6211 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6212 /* look again, but case-insensitively this time. */
6214 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6216 if (/* The suffix `-' matches only the file name `-'. */
6217 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6218 || (strlen (cp->suffix) < length
6219 /* See if the suffix matches the end of NAME. */
6220 && ((!strcmp (cp->suffix,
6221 name + length - strlen (cp->suffix))
6222 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6223 && !strcasecmp (cp->suffix,
6224 name + length - strlen (cp->suffix)))
6230 if (cp >= compilers)
6232 if (cp->spec[0] != '@')
6233 /* A non-alias entry: return it. */
6236 /* An alias entry maps a suffix to a language.
6237 Search for the language; pass 0 for NAME and LENGTH
6238 to avoid infinite recursion if language not found. */
6239 return lookup_compiler (NULL, 0, cp->spec + 1);
6245 save_string (s, len)
6249 char *result = xmalloc (len + 1);
6251 memcpy (result, s, len);
6257 pfatal_with_name (name)
6260 perror_with_name (name);
6261 delete_temp_files ();
6266 perror_with_name (name)
6269 error ("%s: %s", name, xstrerror (errno));
6273 pfatal_pexecute (errmsg_fmt, errmsg_arg)
6274 const char *errmsg_fmt;
6275 const char *errmsg_arg;
6279 int save_errno = errno;
6281 /* Space for trailing '\0' is in %s. */
6282 char *msg = xmalloc (strlen (errmsg_fmt) + strlen (errmsg_arg));
6283 sprintf (msg, errmsg_fmt, errmsg_arg);
6289 pfatal_with_name (errmsg_fmt);
6292 /* Output an error message and exit */
6297 fatal ("internal gcc abort");
6300 /* Output an error message and exit */
6303 fatal VPARAMS ((const char *msgid, ...))
6305 VA_OPEN (ap, msgid);
6306 VA_FIXEDARG (ap, const char *, msgid);
6308 fprintf (stderr, "%s: ", programname);
6309 vfprintf (stderr, _(msgid), ap);
6311 fprintf (stderr, "\n");
6312 delete_temp_files ();
6317 error VPARAMS ((const char *msgid, ...))
6319 VA_OPEN (ap, msgid);
6320 VA_FIXEDARG (ap, const char *, msgid);
6322 fprintf (stderr, "%s: ", programname);
6323 vfprintf (stderr, _(msgid), ap);
6326 fprintf (stderr, "\n");
6330 notice VPARAMS ((const char *msgid, ...))
6332 VA_OPEN (ap, msgid);
6333 VA_FIXEDARG (ap, const char *, msgid);
6335 vfprintf (stderr, _(msgid), ap);
6340 validate_all_switches ()
6342 struct compiler *comp;
6345 struct spec_list *spec;
6347 for (comp = compilers; comp->spec; comp++)
6351 if (c == '%' && (*p == '{' || (*p == 'W' && *++p == '{')))
6352 /* We have a switch spec. */
6353 validate_switches (p + 1);
6356 /* Look through the linked list of specs read from the specs file. */
6357 for (spec = specs; spec; spec = spec->next)
6359 p = *(spec->ptr_spec);
6361 if (c == '%' && (*p == '{' || (*p == 'W' && *++p == '{')))
6362 /* We have a switch spec. */
6363 validate_switches (p + 1);
6366 p = link_command_spec;
6368 if (c == '%' && (*p == '{' || (*p == 'W' && *++p == '{')))
6369 /* We have a switch spec. */
6370 validate_switches (p + 1);
6373 /* Look at the switch-name that comes after START
6374 and mark as valid all supplied switches that match it. */
6377 validate_switches (start)
6380 const char *p = start;
6397 while (*p != ':' && *p != '}' && *p != '|' && *p != '&')
6402 else if (p[-1] == '*')
6404 /* Mark all matching switches as valid. */
6405 for (i = 0; i < n_switches; i++)
6406 if (!strncmp (switches[i].part1, filter, p - filter - 1))
6407 switches[i].validated = 1;
6411 /* Mark an exact matching switch as valid. */
6412 for (i = 0; i < n_switches; i++)
6414 if (!strncmp (switches[i].part1, filter, p - filter)
6415 && switches[i].part1[p - filter] == 0)
6416 switches[i].validated = 1;
6420 if (*p++ == '|' || p[-1] == '&')
6424 /* Check whether a particular argument was used. The first time we
6425 canonicalize the switches to keep only the ones we care about. */
6435 const char *replace;
6440 static struct mswitchstr *mswitches;
6441 static int n_mswitches;
6446 struct mswitchstr *matches;
6450 /* Break multilib_matches into the component strings of string
6451 and replacement string. */
6452 for (q = multilib_matches; *q != '\0'; q++)
6457 (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
6459 q = multilib_matches;
6469 matches[i].len = q - matches[i].str;
6471 matches[i].replace = ++q;
6472 while (*q != ';' && *q != '\0')
6478 matches[i].rep_len = q - matches[i].replace;
6484 /* Now build a list of the replacement string for switches that we care
6485 about. Make sure we allocate at least one entry. This prevents
6486 xmalloc from calling fatal, and prevents us from re-executing this
6489 = (struct mswitchstr *) xmalloc ((sizeof (struct mswitchstr))
6490 * (n_switches ? n_switches : 1));
6491 for (i = 0; i < n_switches; i++)
6493 int xlen = strlen (switches[i].part1);
6494 for (j = 0; j < cnt; j++)
6495 if (xlen == matches[j].len
6496 && ! strncmp (switches[i].part1, matches[j].str, xlen))
6498 mswitches[n_mswitches].str = matches[j].replace;
6499 mswitches[n_mswitches].len = matches[j].rep_len;
6500 mswitches[n_mswitches].replace = (char *) 0;
6501 mswitches[n_mswitches].rep_len = 0;
6508 for (i = 0; i < n_mswitches; i++)
6509 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
6516 default_arg (p, len)
6520 const char *start, *end;
6522 for (start = multilib_defaults; *start != '\0'; start = end + 1)
6524 while (*start == ' ' || *start == '\t')
6530 for (end = start + 1; *end != ' ' && *end != '\t' && *end != '\0'; end++)
6533 if ((end - start) == len && strncmp (p, start, len) == 0)
6543 /* Work out the subdirectory to use based on the options. The format of
6544 multilib_select is a list of elements. Each element is a subdirectory
6545 name followed by a list of options followed by a semicolon. The format
6546 of multilib_exclusions is the same, but without the preceding
6547 directory. First gcc will check the exclusions, if none of the options
6548 beginning with an exclamation point are present, and all of the other
6549 options are present, then we will ignore this completely. Passing
6550 that, gcc will consider each multilib_select in turn using the same
6551 rules for matching the options. If a match is found, that subdirectory
6558 unsigned int this_path_len;
6559 const char *this_path, *this_arg;
6563 p = multilib_exclusions;
6566 /* Ignore newlines. */
6573 /* Check the arguments. */
6587 while (*p != ' ' && *p != ';')
6594 if (*this_arg != '!')
6602 ok = used_arg (this_arg, p - this_arg);
6616 p = multilib_select;
6619 /* Ignore newlines. */
6626 /* Get the initial path. */
6634 this_path_len = p - this_path;
6636 /* Check the arguments. */
6651 while (*p != ' ' && *p != ';')
6658 if (*this_arg != '!')
6666 /* If this is a default argument, we can just ignore it.
6667 This is true even if this_arg begins with '!'. Beginning
6668 with '!' does not mean that this argument is necessarily
6669 inappropriate for this library: it merely means that
6670 there is a more specific library which uses this
6671 argument. If this argument is a default, we need not
6672 consider that more specific library. */
6673 if (! default_arg (this_arg, p - this_arg))
6675 ok = used_arg (this_arg, p - this_arg);
6686 if (this_path_len != 1
6687 || this_path[0] != '.')
6689 char *new_multilib_dir = xmalloc (this_path_len + 1);
6690 strncpy (new_multilib_dir, this_path, this_path_len);
6691 new_multilib_dir[this_path_len] = '\0';
6692 multilib_dir = new_multilib_dir;
6701 /* Print out the multiple library subdirectory selection
6702 information. This prints out a series of lines. Each line looks
6703 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
6704 required. Only the desired options are printed out, the negative
6705 matches. The options are print without a leading dash. There are
6706 no spaces to make it easy to use the information in the shell.
6707 Each subdirectory is printed only once. This assumes the ordering
6708 generated by the genmultilib script. Also, we leave out ones that match
6712 print_multilib_info ()
6714 const char *p = multilib_select;
6715 const char *last_path = 0, *this_path;
6717 unsigned int last_path_len = 0;
6722 /* Ignore newlines. */
6729 /* Get the initial path. */
6738 /* Check for matches with the multilib_exclusions. We don't bother
6739 with the '!' in either list. If any of the exclusion rules match
6740 all of its options with the select rule, we skip it. */
6742 const char *e = multilib_exclusions;
6743 const char *this_arg;
6748 /* Ignore newlines. */
6755 /* Check the arguments. */
6772 while (*e != ' ' && *e != ';')
6783 int len = e - this_arg;
6790 while (*q != ' ' && *q != ';')
6797 if (! strncmp (arg, this_arg, (len < q - arg) ? q - arg : len) ||
6798 default_arg (this_arg, e - this_arg))
6828 /* If this is a duplicate, skip it. */
6829 skip = (last_path != 0 && (unsigned int) (p - this_path) == last_path_len
6830 && ! strncmp (last_path, this_path, last_path_len));
6832 last_path = this_path;
6833 last_path_len = p - this_path;
6836 /* If this directory requires any default arguments, we can skip
6837 it. We will already have printed a directory identical to
6838 this one which does not require that default argument. */
6856 while (*q != ' ' && *q != ';')
6864 && default_arg (arg, q - arg))
6879 for (p1 = last_path; p1 < p; p1++)
6898 use_arg = *p != '!';
6903 while (*p != ' ' && *p != ';')
6918 /* If there are extra options, print them now. */
6919 if (multilib_extra && *multilib_extra)
6921 int print_at = TRUE;
6924 for (q = multilib_extra; *q != '\0'; q++)