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 *const 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 int do_spec_2 PARAMS ((const char *));
303 static const char *find_file PARAMS ((const char *));
304 static int is_directory PARAMS ((const char *, const char *, int));
305 static void validate_switches PARAMS ((const char *));
306 static void validate_all_switches PARAMS ((void));
307 static void give_switch PARAMS ((int, int, int));
308 static int used_arg PARAMS ((const char *, int));
309 static int default_arg PARAMS ((const char *, int));
310 static void set_multilib_dir PARAMS ((void));
311 static void print_multilib_info PARAMS ((void));
312 static void perror_with_name PARAMS ((const char *));
313 static void pfatal_pexecute PARAMS ((const char *, const char *))
315 static void notice PARAMS ((const char *, ...))
317 static void display_help PARAMS ((void));
318 static void add_preprocessor_option PARAMS ((const char *, int));
319 static void add_assembler_option PARAMS ((const char *, int));
320 static void add_linker_option PARAMS ((const char *, int));
321 static void process_command PARAMS ((int, const char *const *));
322 static int execute PARAMS ((void));
323 static void clear_args PARAMS ((void));
324 static void fatal_error PARAMS ((int));
325 #ifdef ENABLE_SHARED_LIBGCC
326 static void init_gcc_specs PARAMS ((struct obstack *,
327 const char *, const char *,
330 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
331 static const char *convert_filename PARAMS ((const char *, int, int));
334 /* The Specs Language
336 Specs are strings containing lines, each of which (if not blank)
337 is made up of a program name, and arguments separated by spaces.
338 The program name must be exact and start from root, since no path
339 is searched and it is unreliable to depend on the current working directory.
340 Redirection of input or output is not supported; the subprograms must
341 accept filenames saying what files to read and write.
343 In addition, the specs can contain %-sequences to substitute variable text
344 or for conditional text. Here is a table of all defined %-sequences.
345 Note that spaces are not generated automatically around the results of
346 expanding these sequences; therefore, you can concatenate them together
347 or with constant text in a single argument.
349 %% substitute one % into the program name or argument.
350 %i substitute the name of the input file being processed.
351 %b substitute the basename of the input file being processed.
352 This is the substring up to (and not including) the last period
353 and not including the directory.
354 %B same as %b, but include the file suffix (text after the last period).
356 substitute a file name that has suffix SUFFIX and is chosen
357 once per compilation, and mark the argument a la %d. To reduce
358 exposure to denial-of-service attacks, the file name is now
359 chosen in a way that is hard to predict even when previously
360 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
361 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
362 the regexp "[.A-Za-z]*%O"; "%O" is treated exactly as if it
363 had been pre-processed. Previously, %g was simply substituted
364 with a file name chosen once per compilation, without regard
365 to any appended suffix (which was therefore treated just like
366 ordinary text), making such attacks more likely to succeed.
368 like %g, but generates a new temporary file name even if %uSUFFIX
371 substitutes the last file name generated with %uSUFFIX, generating a
372 new one if there is no such last file name. In the absence of any
373 %uSUFFIX, this is just like %gSUFFIX, except they don't share
374 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
375 would involve the generation of two distinct file names, one
376 for each `%g.s' and another for each `%U.s'. Previously, %U was
377 simply substituted with a file name chosen for the previous %u,
378 without regard to any appended suffix.
380 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
381 writable, and if save-temps is off; otherwise, substitute the name
382 of a temporary file, just like %u. This temporary file is not
383 meant for communication between processes, but rather as a junk
386 substitutes .SUFFIX for the suffixes of a matched switch's args when
387 it is subsequently output with %*. SUFFIX is terminated by the next
389 %d marks the argument containing or following the %d as a
390 temporary file name, so that that file will be deleted if CC exits
391 successfully. Unlike %g, this contributes no text to the argument.
392 %w marks the argument containing or following the %w as the
393 "output file" of this compilation. This puts the argument
394 into the sequence of arguments that %o will substitute later.
396 like %{...} but mark last argument supplied within
397 as a file to be deleted on failure.
398 %o substitutes the names of all the output files, with spaces
399 automatically placed around them. You should write spaces
400 around the %o as well or the results are undefined.
401 %o is for use in the specs for running the linker.
402 Input files whose names have no recognized suffix are not compiled
403 at all, but they are included among the output files, so they will
405 %O substitutes the suffix for object files. Note that this is
406 handled specially when it immediately follows %g, %u, or %U
407 (with or without a suffix argument) because of the need for
408 those to form complete file names. The handling is such that
409 %O is treated exactly as if it had already been substituted,
410 except that %g, %u, and %U do not currently support additional
411 SUFFIX characters following %O as they would following, for
413 %p substitutes the standard macro predefinitions for the
414 current target machine. Use this when running cpp.
415 %P like %p, but puts `__' before and after the name of each macro.
416 (Except macros that already have __.)
418 %I Substitute a -iprefix option made from GCC_EXEC_PREFIX.
419 %s current argument is the name of a library or startup file of some sort.
420 Search for that file in a standard list of directories
421 and substitute the full name found.
422 %eSTR Print STR as an error message. STR is terminated by a newline.
423 Use this when inconsistent options are detected.
424 %nSTR Print STR as an notice. STR is terminated by a newline.
425 %x{OPTION} Accumulate an option for %X.
426 %X Output the accumulated linker options specified by compilations.
427 %Y Output the accumulated assembler options specified by compilations.
428 %Z Output the accumulated preprocessor options specified by compilations.
429 %v1 Substitute the major version number of GCC.
430 (For version 2.5.3, this is 2.)
431 %v2 Substitute the minor version number of GCC.
432 (For version 2.5.3, this is 5.)
433 %v3 Substitute the patch level number of GCC.
434 (For version 2.5.3, this is 3.)
435 %a process ASM_SPEC as a spec.
436 This allows config.h to specify part of the spec for running as.
437 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
438 used here. This can be used to run a post-processor after the
439 assembler has done its job.
440 %D Dump out a -L option for each directory in startfile_prefixes.
441 If multilib_dir is set, extra entries are generated with it affixed.
442 %l process LINK_SPEC as a spec.
443 %L process LIB_SPEC as a spec.
444 %G process LIBGCC_SPEC as a spec.
445 %M output multilib_dir with directory separators replaced with "_";
446 if multilib_dir is not set or is ".", output "".
447 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
448 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
449 %C process CPP_SPEC as a spec.
450 %1 process CC1_SPEC as a spec.
451 %2 process CC1PLUS_SPEC as a spec.
452 %| output "-" if the input for the current command is coming from a pipe.
453 %* substitute the variable part of a matched option. (See below.)
454 Note that each comma in the substituted string is replaced by
456 %{S} substitutes the -S switch, if that switch was given to CC.
457 If that switch was not specified, this substitutes nothing.
458 Here S is a metasyntactic variable.
459 %{S*} substitutes all the switches specified to CC whose names start
460 with -S. This is used for -o, -I, etc; switches that take
461 arguments. CC considers `-o foo' as being one switch whose
462 name starts with `o'. %{o*} would substitute this text,
463 including the space; thus, two arguments would be generated.
464 %{^S*} likewise, but don't put a blank between a switch and any args.
465 %{S*&T*} likewise, but preserve order of S and T options (the order
466 of S and T in the spec is not significant). Can be any number
467 of ampersand-separated variables; for each the wild card is
468 optional. Useful for CPP as %{D*&U*&A*}.
469 %{S*:X} substitutes X if one or more switches whose names start with -S are
470 specified to CC. Note that the tail part of the -S option
471 (i.e. the part matched by the `*') will be substituted for each
472 occurrence of %* within X.
473 %{<S} remove all occurrences of -S from the command line.
474 Note - this option is position dependent. % commands in the
475 spec string before this option will see -S, % commands in the
476 spec string after this option will not.
477 %{S:X} substitutes X, but only if the -S switch was given to CC.
478 %{!S:X} substitutes X, but only if the -S switch was NOT given to CC.
479 %{|S:X} like %{S:X}, but if no S switch, substitute `-'.
480 %{|!S:X} like %{!S:X}, but if there is an S switch, substitute `-'.
481 %{.S:X} substitutes X, but only if processing a file with suffix S.
482 %{!.S:X} substitutes X, but only if NOT processing a file with suffix S.
483 %{S|P:X} substitutes X if either -S or -P was given to CC. This may be
484 combined with ! and . as above binding stronger than the OR.
485 %(Spec) processes a specification defined in a specs file as *Spec:
486 %[Spec] as above, but put __ around -D arguments
488 The conditional text X in a %{S:X} or %{!S:X} construct may contain
489 other nested % constructs or spaces, or even newlines. They are
490 processed as usual, as described above.
492 The -O, -f, -m, and -W switches are handled specifically in these
493 constructs. If another value of -O or the negated form of a -f, -m, or
494 -W switch is found later in the command line, the earlier switch
495 value is ignored, except with {S*} where S is just one letter; this
496 passes all matching options.
498 The character | at the beginning of the predicate text is used to indicate
499 that a command should be piped to the following command, but only if -pipe
502 Note that it is built into CC which switches take arguments and which
503 do not. You might think it would be useful to generalize this to
504 allow each compiler's spec to say which switches take arguments. But
505 this cannot be done in a consistent fashion. CC cannot even decide
506 which input files have been specified without knowing which switches
507 take arguments, and it must know which input files to compile in order
508 to tell which compilers to run.
510 CC also knows implicitly that arguments starting in `-l' are to be
511 treated as compiler output files, and passed to the linker in their
512 proper position among the other output files. */
514 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
516 /* config.h can define ASM_SPEC to provide extra args to the assembler
517 or extra switch-translations. */
522 /* config.h can define ASM_FINAL_SPEC to run a post processor after
523 the assembler has run. */
524 #ifndef ASM_FINAL_SPEC
525 #define ASM_FINAL_SPEC ""
528 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
529 or extra switch-translations. */
534 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
535 or extra switch-translations. */
540 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
541 or extra switch-translations. */
543 #define CC1PLUS_SPEC ""
546 /* config.h can define LINK_SPEC to provide extra args to the linker
547 or extra switch-translations. */
552 /* config.h can define LIB_SPEC to override the default libraries. */
554 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
557 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
560 #if defined(LINK_LIBGCC_SPECIAL) || defined(LINK_LIBGCC_SPECIAL_1)
561 /* Have gcc do the search for libgcc.a. */
562 #define LIBGCC_SPEC "libgcc.a%s"
564 #define LIBGCC_SPEC "-lgcc"
568 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
569 #ifndef STARTFILE_SPEC
570 #define STARTFILE_SPEC \
571 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
574 /* config.h can define SWITCHES_NEED_SPACES to control which options
575 require spaces between the option and the argument. */
576 #ifndef SWITCHES_NEED_SPACES
577 #define SWITCHES_NEED_SPACES ""
580 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
582 #define ENDFILE_SPEC ""
586 #define LINKER_NAME "collect2"
589 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
591 #ifndef ASM_DEBUG_SPEC
592 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
593 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
594 # define ASM_DEBUG_SPEC \
595 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
596 ? "%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}" \
597 : "%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}")
599 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
600 # define ASM_DEBUG_SPEC "%{g*:--gstabs}"
602 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
603 # define ASM_DEBUG_SPEC "%{g*:--gdwarf2}"
607 #ifndef ASM_DEBUG_SPEC
608 # define ASM_DEBUG_SPEC ""
611 /* Here is the spec for running the linker, after compiling all files. */
613 /* This is overridable by the target in case they need to specify the
614 -lgcc and -lc order specially, yet not require them to override all
615 of LINK_COMMAND_SPEC. */
616 #ifndef LINK_GCC_C_SEQUENCE_SPEC
617 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
620 /* -u* was put back because both BSD and SysV seem to support it. */
621 /* %{static:} simply prevents an error message if the target machine
622 doesn't handle -static. */
623 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
624 scripts which exist in user specified directories, or in standard
626 #ifndef LINK_COMMAND_SPEC
627 #define LINK_COMMAND_SPEC "\
628 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
629 %(linker) %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r} %{s} %{t}\
630 %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
631 %{static:} %{L*} %(link_libgcc) %o %{!nostdlib:%{!nodefaultlibs:%(link_gcc_c_sequence)}}\
632 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
635 #ifndef LINK_LIBGCC_SPEC
636 # ifdef LINK_LIBGCC_SPECIAL
637 /* Don't generate -L options for startfile prefix list. */
638 # define LINK_LIBGCC_SPEC ""
640 /* Do generate them. */
641 # define LINK_LIBGCC_SPEC "%D"
645 #ifndef STARTFILE_PREFIX_SPEC
646 # define STARTFILE_PREFIX_SPEC ""
649 static const char *asm_debug = ASM_DEBUG_SPEC;
650 static const char *cpp_spec = CPP_SPEC;
651 static const char *cpp_predefines = CPP_PREDEFINES;
652 static const char *cc1_spec = CC1_SPEC;
653 static const char *cc1plus_spec = CC1PLUS_SPEC;
654 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
655 static const char *asm_spec = ASM_SPEC;
656 static const char *asm_final_spec = ASM_FINAL_SPEC;
657 static const char *link_spec = LINK_SPEC;
658 static const char *lib_spec = LIB_SPEC;
659 static const char *libgcc_spec = LIBGCC_SPEC;
660 static const char *endfile_spec = ENDFILE_SPEC;
661 static const char *startfile_spec = STARTFILE_SPEC;
662 static const char *switches_need_spaces = SWITCHES_NEED_SPACES;
663 static const char *linker_name_spec = LINKER_NAME;
664 static const char *link_command_spec = LINK_COMMAND_SPEC;
665 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
666 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
668 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
669 There should be no need to override these in target dependent files,
670 but we need to copy them to the specs file so that newer versions
671 of the GCC driver can correctly drive older tool chains with the
672 appropriate -B options. */
674 /* When cpplib handles traditional preprocessing, get rid of this, and
675 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
676 that we default the front end language better. */
677 static const char *trad_capable_cpp =
678 "%{traditional|ftraditional|traditional-cpp:tradcpp0}\
679 %{!traditional:%{!ftraditional:%{!traditional-cpp:cc1 -E}}}";
681 static const char *cpp_unique_options =
682 "%{C:%{!E:%eGNU C does not support -C without using -E}}\
683 %{CC:%{!E:%eGNU C does not support -CC without using -E}}\
684 %{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*} %{P} %{$} %I\
685 %{MD:-MD %W{!o: %b.d}%W{o*:%.d%*}}\
686 %{MMD:-MMD %W{!o: %b.d}%W{o*:%.d%*}}\
687 %{M} %{MM} %W{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
688 %{!E:%{!M:%{!MM:%{MD|MMD:%{o*:-MQ %*}}}}}\
689 %{!no-gcc:-D__GNUC__=%v1 -D__GNUC_MINOR__=%v2 -D__GNUC_PATCHLEVEL__=%v3}\
690 %{!undef:%{!ansi:%{!std=*:%p}%{std=gnu*:%p}} %P} %{trigraphs}\
691 %{remap} %{g3:-dD} %{H} %C %{D*&U*&A*} %{i*} %Z %i\
694 /* This contains cpp options which are common with cc1_options and are passed
695 only when preprocessing only to avoid duplication. */
696 static const char *cpp_options =
697 "%(cpp_unique_options) %{std*} %{W*&pedantic*} %{w} %{m*} %{f*}\
700 /* This contains cpp options which are not passed when the preprocessor
701 output will be used by another program. */
702 static const char *cpp_debug_options = "%{d*}";
704 /* NB: This is shared amongst all front-ends. */
705 static const char *cc1_options =
706 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
707 %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\
708 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*} %{ansi}\
709 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
710 %{Qn:-fno-ident} %{--help:--help}\
711 %{--target-help:--target-help}\
712 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
713 %{fsyntax-only:-o %j} %{-param*}";
715 static const char *asm_options =
716 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
718 static const char *invoke_as =
719 "%{!S:-o %{|!pipe:%g.s} |\n as %(asm_options) %{!pipe:%g.s} %A }";
721 /* Some compilers have limits on line lengths, and the multilib_select
722 and/or multilib_matches strings can be very long, so we build them at
724 static struct obstack multilib_obstack;
725 static const char *multilib_select;
726 static const char *multilib_matches;
727 static const char *multilib_defaults;
728 static const char *multilib_exclusions;
729 #include "multilib.h"
731 /* Check whether a particular argument is a default argument. */
733 #ifndef MULTILIB_DEFAULTS
734 #define MULTILIB_DEFAULTS { "" }
737 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
741 struct user_specs *next;
742 const char *filename;
745 static struct user_specs *user_specs_head, *user_specs_tail;
747 /* This defines which switch letters take arguments. */
749 #define DEFAULT_SWITCH_TAKES_ARG(CHAR) \
750 ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o' \
751 || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u' \
752 || (CHAR) == 'I' || (CHAR) == 'm' || (CHAR) == 'x' \
753 || (CHAR) == 'L' || (CHAR) == 'A' || (CHAR) == 'B' || (CHAR) == 'b')
755 #ifndef SWITCH_TAKES_ARG
756 #define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR)
759 /* This defines which multi-letter switches take arguments. */
761 #define DEFAULT_WORD_SWITCH_TAKES_ARG(STR) \
762 (!strcmp (STR, "Tdata") || !strcmp (STR, "Ttext") \
763 || !strcmp (STR, "Tbss") || !strcmp (STR, "include") \
764 || !strcmp (STR, "imacros") || !strcmp (STR, "aux-info") \
765 || !strcmp (STR, "idirafter") || !strcmp (STR, "iprefix") \
766 || !strcmp (STR, "iwithprefix") || !strcmp (STR, "iwithprefixbefore") \
767 || !strcmp (STR, "isystem") || !strcmp (STR, "-param") \
768 || !strcmp (STR, "specs") \
769 || !strcmp (STR, "MF") || !strcmp (STR, "MT") || !strcmp (STR, "MQ"))
771 #ifndef WORD_SWITCH_TAKES_ARG
772 #define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
775 #ifdef HAVE_TARGET_EXECUTABLE_SUFFIX
776 /* This defines which switches stop a full compilation. */
777 #define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \
778 ((CHAR) == 'c' || (CHAR) == 'S')
780 #ifndef SWITCH_CURTAILS_COMPILATION
781 #define SWITCH_CURTAILS_COMPILATION(CHAR) \
782 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR)
786 /* Record the mapping from file suffixes for compilation specs. */
790 const char *suffix; /* Use this compiler for input files
791 whose names end in this suffix. */
793 const char *spec; /* To use this compiler, run this spec. */
795 const char *cpp_spec; /* If non-NULL, substitute this spec
796 for `%C', rather than the usual
800 /* Pointer to a vector of `struct compiler' that gives the spec for
801 compiling a file, based on its suffix.
802 A file that does not end in any of these suffixes will be passed
803 unchanged to the loader and nothing else will be done to it.
805 An entry containing two 0s is used to terminate the vector.
807 If multiple entries match a file, the last matching one is used. */
809 static struct compiler *compilers;
811 /* Number of entries in `compilers', not counting the null terminator. */
813 static int n_compilers;
815 /* The default list of file name suffixes and their compilation specs. */
817 static const struct compiler default_compilers[] =
819 /* Add lists of suffixes of known languages here. If those languages
820 were not present when we built the driver, we will hit these copies
821 and be given a more meaningful error than "file not used since
822 linking is not done". */
823 {".m", "#Objective-C", 0}, {".mi", "#Objective-C", 0},
824 {".cc", "#C++", 0}, {".cxx", "#C++", 0}, {".cpp", "#C++", 0},
825 {".cp", "#C++", 0}, {".c++", "#C++", 0}, {".C", "#C++", 0},
827 {".ads", "#Ada", 0}, {".adb", "#Ada", 0},
828 {".f", "#Fortran", 0}, {".for", "#Fortran", 0}, {".fpp", "#Fortran", 0},
829 {".F", "#Fortran", 0}, {".FOR", "#Fortran", 0}, {".FPP", "#Fortran", 0},
830 {".r", "#Ratfor", 0},
831 {".p", "#Pascal", 0}, {".pas", "#Pascal", 0},
832 {".java", "#Java", 0}, {".class", "#Java", 0},
833 {".zip", "#Java", 0}, {".jar", "#Java", 0},
834 /* Next come the entries for C. */
837 /* cc1 has an integrated ISO C preprocessor. We should invoke the
838 external preprocessor if -save-temps is given. */
839 "%{E|M|MM:%(trad_capable_cpp) %{ansi:-std=c89} %(cpp_options)\
840 %(cpp_debug_options)}\
842 %{traditional|ftraditional:\
843 %eGNU C no longer supports -traditional without -E}\
844 %{save-temps|traditional-cpp:%(trad_capable_cpp) \
845 %{ansi:-std=c89} %(cpp_options) %b.i \n\
846 cc1 -fpreprocessed %b.i %(cc1_options)}\
847 %{!save-temps:%{!traditional-cpp:\
848 cc1 %{ansi:-std=c89} %(cpp_unique_options) %(cc1_options)}}\
849 %{!fsyntax-only:%(invoke_as)}}}}", 0},
851 "%{!E:%e-E required when input is from standard input}\
852 %(trad_capable_cpp) %{ansi:-std=c89} %(cpp_options)", 0},
853 {".h", "@c-header", 0},
855 "%{!E:%ecompilation of header file requested} \
856 %(trad_capable_cpp) %{ansi:-std=c89} %(cpp_options) %(cpp_debug_options)",
858 {".i", "@cpp-output", 0},
860 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0},
861 {".s", "@assembler", 0},
863 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0},
864 {".S", "@assembler-with-cpp", 0},
865 {"@assembler-with-cpp",
866 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
867 %{E|M|MM:%(cpp_debug_options)}\
868 %{!M:%{!MM:%{!E:%{!S:-o %{|!pipe:%g.s} |\n\
869 as %(asm_debug) %(asm_options) %{!pipe:%g.s} %A }}}}", 0},
871 /* Mark end of table */
875 /* Number of elements in default_compilers, not counting the terminator. */
877 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
879 /* A vector of options to give to the linker.
880 These options are accumulated by %x,
881 and substituted into the linker command with %X. */
882 static int n_linker_options;
883 static char **linker_options;
885 /* A vector of options to give to the assembler.
886 These options are accumulated by -Wa,
887 and substituted into the assembler command with %Y. */
888 static int n_assembler_options;
889 static char **assembler_options;
891 /* A vector of options to give to the preprocessor.
892 These options are accumulated by -Wp,
893 and substituted into the preprocessor command with %Z. */
894 static int n_preprocessor_options;
895 static char **preprocessor_options;
897 /* Define how to map long options into short ones. */
899 /* This structure describes one mapping. */
902 /* The long option's name. */
903 const char *const name;
904 /* The equivalent short option. */
905 const char *const equivalent;
906 /* Argument info. A string of flag chars; NULL equals no options.
907 a => argument required.
908 o => argument optional.
909 j => join argument to equivalent, making one word.
910 * => require other text after NAME as an argument. */
911 const char *const arg_info;
914 /* This is the table of mappings. Mappings are tried sequentially
915 for each option encountered; the first one that matches, wins. */
917 static const struct option_map option_map[] =
919 {"--all-warnings", "-Wall", 0},
920 {"--ansi", "-ansi", 0},
921 {"--assemble", "-S", 0},
922 {"--assert", "-A", "a"},
923 {"--classpath", "-fclasspath=", "aj"},
924 {"--bootclasspath", "-fbootclasspath=", "aj"},
925 {"--CLASSPATH", "-fclasspath=", "aj"},
926 {"--comments", "-C", 0},
927 {"--comments-in-macros", "-CC", 0},
928 {"--compile", "-c", 0},
929 {"--debug", "-g", "oj"},
930 {"--define-macro", "-D", "aj"},
931 {"--dependencies", "-M", 0},
932 {"--dump", "-d", "a"},
933 {"--dumpbase", "-dumpbase", "a"},
934 {"--entry", "-e", 0},
935 {"--extra-warnings", "-W", 0},
936 {"--for-assembler", "-Wa", "a"},
937 {"--for-linker", "-Xlinker", "a"},
938 {"--force-link", "-u", "a"},
939 {"--imacros", "-imacros", "a"},
940 {"--include", "-include", "a"},
941 {"--include-barrier", "-I-", 0},
942 {"--include-directory", "-I", "aj"},
943 {"--include-directory-after", "-idirafter", "a"},
944 {"--include-prefix", "-iprefix", "a"},
945 {"--include-with-prefix", "-iwithprefix", "a"},
946 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
947 {"--include-with-prefix-after", "-iwithprefix", "a"},
948 {"--language", "-x", "a"},
949 {"--library-directory", "-L", "a"},
950 {"--machine", "-m", "aj"},
951 {"--machine-", "-m", "*j"},
952 {"--no-line-commands", "-P", 0},
953 {"--no-precompiled-includes", "-noprecomp", 0},
954 {"--no-standard-includes", "-nostdinc", 0},
955 {"--no-standard-libraries", "-nostdlib", 0},
956 {"--no-warnings", "-w", 0},
957 {"--optimize", "-O", "oj"},
958 {"--output", "-o", "a"},
959 {"--output-class-directory", "-foutput-class-dir=", "ja"},
960 {"--param", "--param", "a"},
961 {"--pedantic", "-pedantic", 0},
962 {"--pedantic-errors", "-pedantic-errors", 0},
963 {"--pipe", "-pipe", 0},
964 {"--prefix", "-B", "a"},
965 {"--preprocess", "-E", 0},
966 {"--print-search-dirs", "-print-search-dirs", 0},
967 {"--print-file-name", "-print-file-name=", "aj"},
968 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
969 {"--print-missing-file-dependencies", "-MG", 0},
970 {"--print-multi-lib", "-print-multi-lib", 0},
971 {"--print-multi-directory", "-print-multi-directory", 0},
972 {"--print-prog-name", "-print-prog-name=", "aj"},
973 {"--profile", "-p", 0},
974 {"--profile-blocks", "-a", 0},
975 {"--quiet", "-q", 0},
976 {"--resource", "-fcompile-resource=", "aj"},
977 {"--save-temps", "-save-temps", 0},
978 {"--shared", "-shared", 0},
979 {"--silent", "-q", 0},
980 {"--specs", "-specs=", "aj"},
981 {"--static", "-static", 0},
982 {"--std", "-std=", "aj"},
983 {"--symbolic", "-symbolic", 0},
984 {"--target", "-b", "a"},
985 {"--time", "-time", 0},
986 {"--trace-includes", "-H", 0},
987 {"--traditional", "-traditional", 0},
988 {"--traditional-cpp", "-traditional-cpp", 0},
989 {"--trigraphs", "-trigraphs", 0},
990 {"--undefine-macro", "-U", "aj"},
991 {"--use-version", "-V", "a"},
992 {"--user-dependencies", "-MM", 0},
993 {"--verbose", "-v", 0},
994 {"--warn-", "-W", "*j"},
995 {"--write-dependencies", "-MD", 0},
996 {"--write-user-dependencies", "-MMD", 0},
1001 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1002 static const struct {
1003 const char *const option_found;
1004 const char *const replacements;
1005 } target_option_translations[] =
1007 TARGET_OPTION_TRANSLATE_TABLE,
1012 /* Translate the options described by *ARGCP and *ARGVP.
1013 Make a new vector and store it back in *ARGVP,
1014 and store its length in *ARGVC. */
1017 translate_options (argcp, argvp)
1019 const char *const **argvp;
1023 const char *const *argv = *argvp;
1024 int newvsize = (argc + 2) * 2 * sizeof (const char *);
1026 (const char **) xmalloc (newvsize);
1030 newv[newindex++] = argv[i++];
1034 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1038 target_option_translations[tott_idx].option_found;
1041 if (strcmp (target_option_translations[tott_idx].option_found,
1048 for (sp = target_option_translations[tott_idx].replacements;
1055 newvsize += spaces * sizeof (const char *);
1056 newv = (const char **) xrealloc (newv, newvsize);
1058 sp = target_option_translations[tott_idx].replacements;
1067 newv[newindex++] = np;
1068 while (*np != ' ' && *np)
1079 if (target_option_translations[tott_idx].option_found)
1083 /* Translate -- options. */
1084 if (argv[i][0] == '-' && argv[i][1] == '-')
1087 /* Find a mapping that applies to this option. */
1088 for (j = 0; j < ARRAY_SIZE (option_map); j++)
1090 size_t optlen = strlen (option_map[j].name);
1091 size_t arglen = strlen (argv[i]);
1092 size_t complen = arglen > optlen ? optlen : arglen;
1093 const char *arginfo = option_map[j].arg_info;
1098 if (!strncmp (argv[i], option_map[j].name, complen))
1100 const char *arg = 0;
1102 if (arglen < optlen)
1105 for (k = j + 1; k < ARRAY_SIZE (option_map); k++)
1106 if (strlen (option_map[k].name) >= arglen
1107 && !strncmp (argv[i], option_map[k].name, arglen))
1109 error ("ambiguous abbreviation %s", argv[i]);
1113 if (k != ARRAY_SIZE (option_map))
1117 if (arglen > optlen)
1119 /* If the option has an argument, accept that. */
1120 if (argv[i][optlen] == '=')
1121 arg = argv[i] + optlen + 1;
1123 /* If this mapping requires extra text at end of name,
1124 accept that as "argument". */
1125 else if (strchr (arginfo, '*') != 0)
1126 arg = argv[i] + optlen;
1128 /* Otherwise, extra text at end means mismatch.
1129 Try other mappings. */
1134 else if (strchr (arginfo, '*') != 0)
1136 error ("incomplete `%s' option", option_map[j].name);
1140 /* Handle arguments. */
1141 if (strchr (arginfo, 'a') != 0)
1147 error ("missing argument to `%s' option",
1148 option_map[j].name);
1155 else if (strchr (arginfo, '*') != 0)
1157 else if (strchr (arginfo, 'o') == 0)
1160 error ("extraneous argument to `%s' option",
1161 option_map[j].name);
1165 /* Store the translation as one argv elt or as two. */
1166 if (arg != 0 && strchr (arginfo, 'j') != 0)
1167 newv[newindex++] = concat (option_map[j].equivalent, arg,
1171 newv[newindex++] = option_map[j].equivalent;
1172 newv[newindex++] = arg;
1175 newv[newindex++] = option_map[j].equivalent;
1183 /* Handle old-fashioned options--just copy them through,
1184 with their arguments. */
1185 else if (argv[i][0] == '-')
1187 const char *p = argv[i] + 1;
1191 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
1192 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
1193 else if (WORD_SWITCH_TAKES_ARG (p))
1194 nskip += WORD_SWITCH_TAKES_ARG (p);
1195 else if ((c == 'B' || c == 'b' || c == 'x')
1198 else if (! strcmp (p, "Xlinker"))
1201 /* Watch out for an option at the end of the command line that
1202 is missing arguments, and avoid skipping past the end of the
1204 if (nskip + i > argc)
1209 newv[newindex++] = argv[i++];
1214 /* Ordinary operands, or +e options. */
1215 newv[newindex++] = argv[i++];
1230 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1231 be considered whitespace. */
1232 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1234 else if (*p == '\n' || *p == ' ' || *p == '\t')
1248 /* Structures to keep track of prefixes to try when looking for files. */
1252 const char *prefix; /* String to prepend to the path. */
1253 struct prefix_list *next; /* Next in linked list. */
1254 int require_machine_suffix; /* Don't use without machine_suffix. */
1255 /* 2 means try both machine_suffix and just_machine_suffix. */
1256 int *used_flag_ptr; /* 1 if a file was found with this prefix. */
1257 int priority; /* Sort key - priority within list */
1262 struct prefix_list *plist; /* List of prefixes to try */
1263 int max_len; /* Max length of a prefix in PLIST */
1264 const char *name; /* Name of this list (used in config stuff) */
1267 /* List of prefixes to try when looking for executables. */
1269 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1271 /* List of prefixes to try when looking for startup (crt0) files. */
1273 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1275 /* List of prefixes to try when looking for include files. */
1277 static struct path_prefix include_prefixes = { 0, 0, "include" };
1279 /* Suffix to attach to directories searched for commands.
1280 This looks like `MACHINE/VERSION/'. */
1282 static const char *machine_suffix = 0;
1284 /* Suffix to attach to directories searched for commands.
1285 This is just `MACHINE/'. */
1287 static const char *just_machine_suffix = 0;
1289 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1291 static const char *gcc_exec_prefix;
1293 /* Default prefixes to attach to command names. */
1295 #ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */
1296 #undef MD_EXEC_PREFIX
1297 #undef MD_STARTFILE_PREFIX
1298 #undef MD_STARTFILE_PREFIX_1
1301 /* If no prefixes defined, use the null string, which will disable them. */
1302 #ifndef MD_EXEC_PREFIX
1303 #define MD_EXEC_PREFIX ""
1305 #ifndef MD_STARTFILE_PREFIX
1306 #define MD_STARTFILE_PREFIX ""
1308 #ifndef MD_STARTFILE_PREFIX_1
1309 #define MD_STARTFILE_PREFIX_1 ""
1312 /* Supply defaults for the standard prefixes. */
1314 #ifndef STANDARD_EXEC_PREFIX
1315 #define STANDARD_EXEC_PREFIX "/usr/local/lib/gcc-lib/"
1317 #ifndef STANDARD_STARTFILE_PREFIX
1318 #define STANDARD_STARTFILE_PREFIX "/usr/local/lib/"
1320 #ifndef TOOLDIR_BASE_PREFIX
1321 #define TOOLDIR_BASE_PREFIX "/usr/local/"
1323 #ifndef STANDARD_BINDIR_PREFIX
1324 #define STANDARD_BINDIR_PREFIX "/usr/local/bin"
1327 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1328 static const char *const standard_exec_prefix_1 = "/usr/lib/gcc/";
1329 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1331 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1332 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1333 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1334 static const char *const standard_startfile_prefix_1 = "/lib/";
1335 static const char *const standard_startfile_prefix_2 = "/usr/lib/";
1337 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1338 static const char *tooldir_prefix;
1340 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1342 /* Subdirectory to use for locating libraries. Set by
1343 set_multilib_dir based on the compilation options. */
1345 static const char *multilib_dir;
1347 /* Structure to keep track of the specs that have been defined so far.
1348 These are accessed using %(specname) or %[specname] in a compiler
1353 /* The following 2 fields must be first */
1354 /* to allow EXTRA_SPECS to be initialized */
1355 const char *name; /* name of the spec. */
1356 const char *ptr; /* available ptr if no static pointer */
1358 /* The following fields are not initialized */
1359 /* by EXTRA_SPECS */
1360 const char **ptr_spec; /* pointer to the spec itself. */
1361 struct spec_list *next; /* Next spec in linked list. */
1362 int name_len; /* length of the name */
1363 int alloc_p; /* whether string was allocated */
1366 #define INIT_STATIC_SPEC(NAME,PTR) \
1367 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1369 /* List of statically defined specs. */
1370 static struct spec_list static_specs[] =
1372 INIT_STATIC_SPEC ("asm", &asm_spec),
1373 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1374 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1375 INIT_STATIC_SPEC ("asm_options", &asm_options),
1376 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1377 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1378 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1379 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1380 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1381 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1382 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1383 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1384 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1385 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1386 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1387 INIT_STATIC_SPEC ("link", &link_spec),
1388 INIT_STATIC_SPEC ("lib", &lib_spec),
1389 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1390 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1391 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces),
1392 INIT_STATIC_SPEC ("predefines", &cpp_predefines),
1393 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1394 INIT_STATIC_SPEC ("version", &compiler_version),
1395 INIT_STATIC_SPEC ("multilib", &multilib_select),
1396 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1397 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1398 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1399 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1400 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1401 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1402 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1403 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1404 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1405 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1408 #ifdef EXTRA_SPECS /* additional specs needed */
1409 /* Structure to keep track of just the first two args of a spec_list.
1410 That is all that the EXTRA_SPECS macro gives us. */
1413 const char *const name;
1414 const char *const ptr;
1417 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1418 static struct spec_list *extra_specs = (struct spec_list *) 0;
1421 /* List of dynamically allocates specs that have been defined so far. */
1423 static struct spec_list *specs = (struct spec_list *) 0;
1425 /* Add appropriate libgcc specs to OBSTACK, taking into account
1426 various permutations of -shared-libgcc, -shared, and such. */
1428 #ifdef ENABLE_SHARED_LIBGCC
1430 init_gcc_specs (obstack, shared_name, static_name, eh_name)
1431 struct obstack *obstack;
1432 const char *shared_name;
1433 const char *static_name;
1434 const char *eh_name;
1438 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name,
1439 "}%{!static:%{!static-libgcc:",
1440 "%{!shared:%{!shared-libgcc:", static_name, " ",
1441 eh_name, "}%{shared-libgcc:", shared_name, " ",
1442 static_name, "}}%{shared:",
1444 "%{shared-libgcc:", shared_name,
1445 "}%{!shared-libgcc:", static_name, "}",
1451 obstack_grow (obstack, buf, strlen (buf));
1454 #endif /* ENABLE_SHARED_LIBGCC */
1456 /* Initialize the specs lookup routines. */
1461 struct spec_list *next = (struct spec_list *) 0;
1462 struct spec_list *sl = (struct spec_list *) 0;
1466 return; /* Already initialized. */
1469 notice ("Using built-in specs.\n");
1472 extra_specs = (struct spec_list *)
1473 xcalloc (sizeof (struct spec_list), ARRAY_SIZE (extra_specs_1));
1475 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1477 sl = &extra_specs[i];
1478 sl->name = extra_specs_1[i].name;
1479 sl->ptr = extra_specs_1[i].ptr;
1481 sl->name_len = strlen (sl->name);
1482 sl->ptr_spec = &sl->ptr;
1487 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1489 sl = &static_specs[i];
1494 #ifdef ENABLE_SHARED_LIBGCC
1495 /* ??? If neither -shared-libgcc nor --static-libgcc was
1496 seen, then we should be making an educated guess. Some proposed
1497 heuristics for ELF include:
1499 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1500 program will be doing dynamic loading, which will likely
1501 need the shared libgcc.
1503 (2) If "-ldl", then it's also a fair bet that we're doing
1506 (3) For each ET_DYN we're linking against (either through -lfoo
1507 or /some/path/foo.so), check to see whether it or one of
1508 its dependencies depends on a shared libgcc.
1512 If the runtime is fixed to look for program headers instead
1513 of calling __register_frame_info at all, for each object,
1514 use the shared libgcc if any EH symbol referenced.
1516 If crtstuff is fixed to not invoke __register_frame_info
1517 automatically, for each object, use the shared libgcc if
1518 any non-empty unwind section found.
1520 Doing any of this probably requires invoking an external program to
1521 do the actual object file scanning. */
1523 const char *p = libgcc_spec;
1526 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1527 when given the proper command line arguments. */
1530 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1532 init_gcc_specs (&obstack,
1533 #ifdef NO_SHARED_LIBGCC_MULTILIB
1544 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1546 /* Ug. We don't know shared library extensions. Hope that
1547 systems that use this form don't do shared libraries. */
1548 init_gcc_specs (&obstack,
1549 #ifdef NO_SHARED_LIBGCC_MULTILIB
1562 obstack_1grow (&obstack, *p);
1563 in_sep = (*p == ' ');
1568 obstack_1grow (&obstack, '\0');
1569 libgcc_spec = obstack_finish (&obstack);
1572 #ifdef USE_AS_TRADITIONAL_FORMAT
1573 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1575 static const char tf[] = "--traditional-format ";
1576 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1577 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1578 asm_spec = obstack_finish (&obstack);
1582 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1583 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1584 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1585 link_spec = obstack_finish (&obstack);
1591 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1592 removed; If the spec starts with a + then SPEC is added to the end of the
1596 set_spec (name, spec)
1600 struct spec_list *sl;
1601 const char *old_spec;
1602 int name_len = strlen (name);
1605 /* If this is the first call, initialize the statically allocated specs. */
1608 struct spec_list *next = (struct spec_list *) 0;
1609 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1611 sl = &static_specs[i];
1618 /* See if the spec already exists. */
1619 for (sl = specs; sl; sl = sl->next)
1620 if (name_len == sl->name_len && !strcmp (sl->name, name))
1625 /* Not found - make it. */
1626 sl = (struct spec_list *) xmalloc (sizeof (struct spec_list));
1627 sl->name = xstrdup (name);
1628 sl->name_len = name_len;
1629 sl->ptr_spec = &sl->ptr;
1631 *(sl->ptr_spec) = "";
1636 old_spec = *(sl->ptr_spec);
1637 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1638 ? concat (old_spec, spec + 1, NULL)
1643 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1646 /* Free the old spec. */
1647 if (old_spec && sl->alloc_p)
1648 free ((PTR) old_spec);
1653 /* Accumulate a command (program name and args), and run it. */
1655 /* Vector of pointers to arguments in the current line of specifications. */
1657 static const char **argbuf;
1659 /* Number of elements allocated in argbuf. */
1661 static int argbuf_length;
1663 /* Number of elements in argbuf currently in use (containing args). */
1665 static int argbuf_index;
1667 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1668 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1671 static struct temp_name {
1672 const char *suffix; /* suffix associated with the code. */
1673 int length; /* strlen (suffix). */
1674 int unique; /* Indicates whether %g or %u/%U was used. */
1675 const char *filename; /* associated filename. */
1676 int filename_length; /* strlen (filename). */
1677 struct temp_name *next;
1680 /* Number of commands executed so far. */
1682 static int execution_count;
1684 /* Number of commands that exited with a signal. */
1686 static int signal_count;
1688 /* Name with which this program was invoked. */
1690 static const char *programname;
1692 /* Clear out the vector of arguments (after a command is executed). */
1700 /* Add one argument to the vector at the end.
1701 This is done when a space is seen or at the end of the line.
1702 If DELETE_ALWAYS is nonzero, the arg is a filename
1703 and the file should be deleted eventually.
1704 If DELETE_FAILURE is nonzero, the arg is a filename
1705 and the file should be deleted if this compilation fails. */
1708 store_arg (arg, delete_always, delete_failure)
1710 int delete_always, delete_failure;
1712 if (argbuf_index + 1 == argbuf_length)
1714 = (const char **) xrealloc (argbuf,
1715 (argbuf_length *= 2) * sizeof (const char *));
1717 argbuf[argbuf_index++] = arg;
1718 argbuf[argbuf_index] = 0;
1720 if (delete_always || delete_failure)
1721 record_temp_file (arg, delete_always, delete_failure);
1724 /* Load specs from a file name named FILENAME, replacing occurrences of
1725 various different types of line-endings, \r\n, \n\r and just \r, with
1729 load_specs (filename)
1730 const char *filename;
1734 struct stat statbuf;
1741 notice ("Reading specs from %s\n", filename);
1743 /* Open and stat the file. */
1744 desc = open (filename, O_RDONLY, 0);
1746 pfatal_with_name (filename);
1747 if (stat (filename, &statbuf) < 0)
1748 pfatal_with_name (filename);
1750 /* Read contents of file into BUFFER. */
1751 buffer = xmalloc ((unsigned) statbuf.st_size + 1);
1752 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1754 pfatal_with_name (filename);
1755 buffer[readlen] = 0;
1758 specs = xmalloc (readlen + 1);
1760 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1766 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1768 else if (*(buffer_p + 1) == '\n') /* \r\n */
1782 /* Read compilation specs from a file named FILENAME,
1783 replacing the default ones.
1785 A suffix which starts with `*' is a definition for
1786 one of the machine-specific sub-specs. The "suffix" should be
1787 *asm, *cc1, *cpp, *link, *startfile, etc.
1788 The corresponding spec is stored in asm_spec, etc.,
1789 rather than in the `compilers' vector.
1791 Anything invalid in the file is a fatal error. */
1794 read_specs (filename, main_p)
1795 const char *filename;
1801 buffer = load_specs (filename);
1803 /* Scan BUFFER for specs, putting them in the vector. */
1809 char *in, *out, *p1, *p2, *p3;
1811 /* Advance P in BUFFER to the next nonblank nocomment line. */
1812 p = skip_whitespace (p);
1816 /* Is this a special command that starts with '%'? */
1817 /* Don't allow this for the main specs file, since it would
1818 encourage people to overwrite it. */
1819 if (*p == '%' && !main_p)
1822 while (*p && *p != '\n')
1828 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1829 && (p1[sizeof "%include" - 1] == ' '
1830 || p1[sizeof "%include" - 1] == '\t'))
1834 p1 += sizeof ("%include");
1835 while (*p1 == ' ' || *p1 == '\t')
1838 if (*p1++ != '<' || p[-2] != '>')
1839 fatal ("specs %%include syntax malformed after %ld characters",
1840 (long) (p1 - buffer + 1));
1843 new_filename = find_a_file (&startfile_prefixes, p1, R_OK);
1844 read_specs (new_filename ? new_filename : p1, FALSE);
1847 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1848 && (p1[sizeof "%include_noerr" - 1] == ' '
1849 || p1[sizeof "%include_noerr" - 1] == '\t'))
1853 p1 += sizeof "%include_noerr";
1854 while (*p1 == ' ' || *p1 == '\t')
1857 if (*p1++ != '<' || p[-2] != '>')
1858 fatal ("specs %%include syntax malformed after %ld characters",
1859 (long) (p1 - buffer + 1));
1862 new_filename = find_a_file (&startfile_prefixes, p1, R_OK);
1864 read_specs (new_filename, FALSE);
1865 else if (verbose_flag)
1866 notice ("could not find specs file %s\n", p1);
1869 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1870 && (p1[sizeof "%rename" - 1] == ' '
1871 || p1[sizeof "%rename" - 1] == '\t'))
1874 struct spec_list *sl;
1875 struct spec_list *newsl;
1877 /* Get original name. */
1878 p1 += sizeof "%rename";
1879 while (*p1 == ' ' || *p1 == '\t')
1882 if (! ISALPHA ((unsigned char) *p1))
1883 fatal ("specs %%rename syntax malformed after %ld characters",
1884 (long) (p1 - buffer));
1887 while (*p2 && !ISSPACE ((unsigned char) *p2))
1890 if (*p2 != ' ' && *p2 != '\t')
1891 fatal ("specs %%rename syntax malformed after %ld characters",
1892 (long) (p2 - buffer));
1896 while (*p2 == ' ' || *p2 == '\t')
1899 if (! ISALPHA ((unsigned char) *p2))
1900 fatal ("specs %%rename syntax malformed after %ld characters",
1901 (long) (p2 - buffer));
1903 /* Get new spec name. */
1905 while (*p3 && !ISSPACE ((unsigned char) *p3))
1909 fatal ("specs %%rename syntax malformed after %ld characters",
1910 (long) (p3 - buffer));
1913 for (sl = specs; sl; sl = sl->next)
1914 if (name_len == sl->name_len && !strcmp (sl->name, p1))
1918 fatal ("specs %s spec was not found to be renamed", p1);
1920 if (strcmp (p1, p2) == 0)
1923 for (newsl = specs; newsl; newsl = newsl->next)
1924 if (strcmp (newsl->name, p2) == 0)
1925 fatal ("%s: attempt to rename spec '%s' to already defined spec '%s'",
1930 notice ("rename spec %s to %s\n", p1, p2);
1932 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
1936 set_spec (p2, *(sl->ptr_spec));
1938 free ((PTR) *(sl->ptr_spec));
1940 *(sl->ptr_spec) = "";
1945 fatal ("specs unknown %% command after %ld characters",
1946 (long) (p1 - buffer));
1949 /* Find the colon that should end the suffix. */
1951 while (*p1 && *p1 != ':' && *p1 != '\n')
1954 /* The colon shouldn't be missing. */
1956 fatal ("specs file malformed after %ld characters",
1957 (long) (p1 - buffer));
1959 /* Skip back over trailing whitespace. */
1961 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
1964 /* Copy the suffix to a string. */
1965 suffix = save_string (p, p2 - p);
1966 /* Find the next line. */
1967 p = skip_whitespace (p1 + 1);
1969 fatal ("specs file malformed after %ld characters",
1970 (long) (p - buffer));
1973 /* Find next blank line or end of string. */
1974 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
1977 /* Specs end at the blank line and do not include the newline. */
1978 spec = save_string (p, p1 - p);
1981 /* Delete backslash-newline sequences from the spec. */
1986 if (in[0] == '\\' && in[1] == '\n')
1988 else if (in[0] == '#')
1989 while (*in && *in != '\n')
1997 if (suffix[0] == '*')
1999 if (! strcmp (suffix, "*link_command"))
2000 link_command_spec = spec;
2002 set_spec (suffix + 1, spec);
2006 /* Add this pair to the vector. */
2008 = ((struct compiler *)
2009 xrealloc (compilers,
2010 (n_compilers + 2) * sizeof (struct compiler)));
2012 compilers[n_compilers].suffix = suffix;
2013 compilers[n_compilers].spec = spec;
2015 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2019 link_command_spec = spec;
2022 if (link_command_spec == 0)
2023 fatal ("spec file has no spec for linking");
2026 /* Record the names of temporary files we tell compilers to write,
2027 and delete them at the end of the run. */
2029 /* This is the common prefix we use to make temp file names.
2030 It is chosen once for each run of this program.
2031 It is substituted into a spec by %g or %j.
2032 Thus, all temp file names contain this prefix.
2033 In practice, all temp file names start with this prefix.
2035 This prefix comes from the envvar TMPDIR if it is defined;
2036 otherwise, from the P_tmpdir macro if that is defined;
2037 otherwise, in /usr/tmp or /tmp;
2038 or finally the current directory if all else fails. */
2040 static const char *temp_filename;
2042 /* Length of the prefix. */
2044 static int temp_filename_length;
2046 /* Define the list of temporary files to delete. */
2051 struct temp_file *next;
2054 /* Queue of files to delete on success or failure of compilation. */
2055 static struct temp_file *always_delete_queue;
2056 /* Queue of files to delete on failure of compilation. */
2057 static struct temp_file *failure_delete_queue;
2059 /* Record FILENAME as a file to be deleted automatically.
2060 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2061 otherwise delete it in any case.
2062 FAIL_DELETE nonzero means delete it if a compilation step fails;
2063 otherwise delete it in any case. */
2066 record_temp_file (filename, always_delete, fail_delete)
2067 const char *filename;
2071 char *const name = xstrdup (filename);
2075 struct temp_file *temp;
2076 for (temp = always_delete_queue; temp; temp = temp->next)
2077 if (! strcmp (name, temp->name))
2080 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
2081 temp->next = always_delete_queue;
2083 always_delete_queue = temp;
2090 struct temp_file *temp;
2091 for (temp = failure_delete_queue; temp; temp = temp->next)
2092 if (! strcmp (name, temp->name))
2095 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
2096 temp->next = failure_delete_queue;
2098 failure_delete_queue = temp;
2104 /* Delete all the temporary files whose names we previously recorded. */
2107 delete_if_ordinary (name)
2114 printf ("Delete %s? (y or n) ", name);
2118 while ((c = getchar ()) != '\n' && c != EOF)
2121 if (i == 'y' || i == 'Y')
2123 if (stat (name, &st) >= 0 && S_ISREG (st.st_mode))
2124 if (unlink (name) < 0)
2126 perror_with_name (name);
2130 delete_temp_files ()
2132 struct temp_file *temp;
2134 for (temp = always_delete_queue; temp; temp = temp->next)
2135 delete_if_ordinary (temp->name);
2136 always_delete_queue = 0;
2139 /* Delete all the files to be deleted on error. */
2142 delete_failure_queue ()
2144 struct temp_file *temp;
2146 for (temp = failure_delete_queue; temp; temp = temp->next)
2147 delete_if_ordinary (temp->name);
2151 clear_failure_queue ()
2153 failure_delete_queue = 0;
2156 /* Build a list of search directories from PATHS.
2157 PREFIX is a string to prepend to the list.
2158 If CHECK_DIR_P is non-zero we ensure the directory exists.
2159 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2160 It is also used by the --print-search-dirs flag. */
2163 build_search_list (paths, prefix, check_dir_p)
2164 struct path_prefix *paths;
2168 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0;
2170 = (just_machine_suffix) ? strlen (just_machine_suffix) : 0;
2171 int first_time = TRUE;
2172 struct prefix_list *pprefix;
2174 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2175 obstack_1grow (&collect_obstack, '=');
2177 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next)
2179 int len = strlen (pprefix->prefix);
2183 || is_directory (pprefix->prefix, machine_suffix, 0)))
2186 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2189 obstack_grow (&collect_obstack, pprefix->prefix, len);
2190 obstack_grow (&collect_obstack, machine_suffix, suffix_len);
2193 if (just_machine_suffix
2194 && pprefix->require_machine_suffix == 2
2196 || is_directory (pprefix->prefix, just_machine_suffix, 0)))
2199 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2202 obstack_grow (&collect_obstack, pprefix->prefix, len);
2203 obstack_grow (&collect_obstack, just_machine_suffix,
2207 if (! pprefix->require_machine_suffix)
2210 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2213 obstack_grow (&collect_obstack, pprefix->prefix, len);
2217 obstack_1grow (&collect_obstack, '\0');
2218 return obstack_finish (&collect_obstack);
2221 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2225 putenv_from_prefixes (paths, env_var)
2226 struct path_prefix *paths;
2227 const char *env_var;
2229 putenv (build_search_list (paths, env_var, 1));
2234 /* FIXME: the location independence code for VMS is hairier than this,
2235 and hasn't been written. */
2237 /* Split a filename into component directories. */
2240 split_directories (name, ptr_num_dirs)
2249 /* Count the number of directories. Special case MSDOS disk names as part
2250 of the initial directory. */
2252 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2253 if (name[1] == ':' && IS_DIR_SEPARATOR (name[2]))
2258 #endif /* HAVE_DOS_BASED_FILE_SYSTEM */
2260 while ((ch = *p++) != '\0')
2262 if (IS_DIR_SEPARATOR (ch))
2265 while (IS_DIR_SEPARATOR (*p))
2270 dirs = (char **) xmalloc (sizeof (char *) * (num_dirs + 2));
2272 /* Now copy the directory parts. */
2275 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2276 if (name[1] == ':' && IS_DIR_SEPARATOR (name[2]))
2278 dirs[num_dirs++] = save_string (p, 3);
2281 #endif /* HAVE_DOS_BASED_FILE_SYSTEM */
2284 while ((ch = *p++) != '\0')
2286 if (IS_DIR_SEPARATOR (ch))
2288 while (IS_DIR_SEPARATOR (*p))
2291 dirs[num_dirs++] = save_string (q, p - q);
2297 dirs[num_dirs++] = save_string (q, p - 1 - q);
2299 dirs[num_dirs] = NULL;
2301 *ptr_num_dirs = num_dirs;
2306 /* Release storage held by split directories. */
2309 free_split_directories (dirs)
2314 while (dirs[i] != NULL)
2317 free ((char *) dirs);
2320 /* Given three strings PROGNAME, BIN_PREFIX, PREFIX, return a string that gets
2321 to PREFIX starting with the directory portion of PROGNAME and a relative
2322 pathname of the difference between BIN_PREFIX and PREFIX.
2324 For example, if BIN_PREFIX is /alpha/beta/gamma/gcc/delta, PREFIX is
2325 /alpha/beta/gamma/omega/, and PROGNAME is /red/green/blue/gcc, then this
2326 function will return /red/green/blue/../omega.
2328 If no relative prefix can be found, return NULL. */
2331 make_relative_prefix (progname, bin_prefix, prefix)
2332 const char *progname;
2333 const char *bin_prefix;
2336 char **prog_dirs, **bin_dirs, **prefix_dirs;
2337 int prog_num, bin_num, prefix_num, std_loc_p;
2340 prog_dirs = split_directories (progname, &prog_num);
2341 bin_dirs = split_directories (bin_prefix, &bin_num);
2343 /* If there is no full pathname, try to find the program by checking in each
2344 of the directories specified in the PATH environment variable. */
2349 GET_ENV_PATH_LIST (temp, "PATH");
2352 char *startp, *endp, *nstore;
2353 size_t prefixlen = strlen (temp) + 1;
2357 nstore = (char *) alloca (prefixlen + strlen (progname) + 1);
2359 startp = endp = temp;
2362 if (*endp == PATH_SEPARATOR || *endp == 0)
2367 nstore[1] = DIR_SEPARATOR;
2372 strncpy (nstore, startp, endp - startp);
2373 if (! IS_DIR_SEPARATOR (endp[-1]))
2375 nstore[endp - startp] = DIR_SEPARATOR;
2376 nstore[endp - startp + 1] = 0;
2379 nstore[endp - startp] = 0;
2381 strcat (nstore, progname);
2382 if (! access (nstore, X_OK)
2383 #ifdef HAVE_HOST_EXECUTABLE_SUFFIX
2384 || ! access (strcat (nstore, HOST_EXECUTABLE_SUFFIX), X_OK)
2388 free_split_directories (prog_dirs);
2390 prog_dirs = split_directories (progname, &prog_num);
2396 endp = startp = endp + 1;
2404 /* Remove the program name from comparison of directory names. */
2407 /* Determine if the compiler is installed in the standard location, and if
2408 so, we don't need to specify relative directories. Also, if argv[0]
2409 doesn't contain any directory specifiers, there is not much we can do. */
2411 if (prog_num == bin_num)
2413 for (i = 0; i < bin_num; i++)
2415 if (strcmp (prog_dirs[i], bin_dirs[i]) != 0)
2419 if (prog_num <= 0 || i == bin_num)
2422 free_split_directories (prog_dirs);
2423 free_split_directories (bin_dirs);
2424 prog_dirs = bin_dirs = (char **) 0;
2429 prefix_dirs = split_directories (prefix, &prefix_num);
2431 /* Find how many directories are in common between bin_prefix & prefix. */
2432 n = (prefix_num < bin_num) ? prefix_num : bin_num;
2433 for (common = 0; common < n; common++)
2435 if (strcmp (bin_dirs[common], prefix_dirs[common]) != 0)
2439 /* If there are no common directories, there can be no relative prefix. */
2442 free_split_directories (prog_dirs);
2443 free_split_directories (bin_dirs);
2444 free_split_directories (prefix_dirs);
2448 /* Build up the pathnames in argv[0]. */
2449 for (i = 0; i < prog_num; i++)
2450 obstack_grow (&obstack, prog_dirs[i], strlen (prog_dirs[i]));
2452 /* Now build up the ..'s. */
2453 for (i = common; i < n; i++)
2455 obstack_grow (&obstack, DIR_UP, sizeof (DIR_UP) - 1);
2456 obstack_1grow (&obstack, DIR_SEPARATOR);
2459 /* Put in directories to move over to prefix. */
2460 for (i = common; i < prefix_num; i++)
2461 obstack_grow (&obstack, prefix_dirs[i], strlen (prefix_dirs[i]));
2463 free_split_directories (prog_dirs);
2464 free_split_directories (bin_dirs);
2465 free_split_directories (prefix_dirs);
2467 obstack_1grow (&obstack, '\0');
2468 return obstack_finish (&obstack);
2472 /* Check whether NAME can be accessed in MODE. This is like access,
2473 except that it never considers directories to be executable. */
2476 access_check (name, mode)
2484 if (stat (name, &st) < 0
2485 || S_ISDIR (st.st_mode))
2489 return access (name, mode);
2492 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2493 access to check permissions.
2494 Return 0 if not found, otherwise return its name, allocated with malloc. */
2497 find_a_file (pprefix, name, mode)
2498 struct path_prefix *pprefix;
2503 const char *const file_suffix =
2504 ((mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "");
2505 struct prefix_list *pl;
2506 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1;
2508 #ifdef DEFAULT_ASSEMBLER
2509 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2510 return xstrdup (DEFAULT_ASSEMBLER);
2513 #ifdef DEFAULT_LINKER
2514 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2515 return xstrdup (DEFAULT_LINKER);
2519 len += strlen (machine_suffix);
2521 temp = xmalloc (len);
2523 /* Determine the filename to execute (special case for absolute paths). */
2525 if (IS_ABSOLUTE_PATHNAME (name))
2527 if (access (name, mode) == 0)
2529 strcpy (temp, name);
2534 for (pl = pprefix->plist; pl; pl = pl->next)
2538 /* Some systems have a suffix for executable files.
2539 So try appending that first. */
2540 if (file_suffix[0] != 0)
2542 strcpy (temp, pl->prefix);
2543 strcat (temp, machine_suffix);
2544 strcat (temp, name);
2545 strcat (temp, file_suffix);
2546 if (access_check (temp, mode) == 0)
2548 if (pl->used_flag_ptr != 0)
2549 *pl->used_flag_ptr = 1;
2554 /* Now try just the name. */
2555 strcpy (temp, pl->prefix);
2556 strcat (temp, machine_suffix);
2557 strcat (temp, name);
2558 if (access_check (temp, mode) == 0)
2560 if (pl->used_flag_ptr != 0)
2561 *pl->used_flag_ptr = 1;
2566 /* Certain prefixes are tried with just the machine type,
2567 not the version. This is used for finding as, ld, etc. */
2568 if (just_machine_suffix && pl->require_machine_suffix == 2)
2570 /* Some systems have a suffix for executable files.
2571 So try appending that first. */
2572 if (file_suffix[0] != 0)
2574 strcpy (temp, pl->prefix);
2575 strcat (temp, just_machine_suffix);
2576 strcat (temp, name);
2577 strcat (temp, file_suffix);
2578 if (access_check (temp, mode) == 0)
2580 if (pl->used_flag_ptr != 0)
2581 *pl->used_flag_ptr = 1;
2586 strcpy (temp, pl->prefix);
2587 strcat (temp, just_machine_suffix);
2588 strcat (temp, name);
2589 if (access_check (temp, mode) == 0)
2591 if (pl->used_flag_ptr != 0)
2592 *pl->used_flag_ptr = 1;
2597 /* Certain prefixes can't be used without the machine suffix
2598 when the machine or version is explicitly specified. */
2599 if (! pl->require_machine_suffix)
2601 /* Some systems have a suffix for executable files.
2602 So try appending that first. */
2603 if (file_suffix[0] != 0)
2605 strcpy (temp, pl->prefix);
2606 strcat (temp, name);
2607 strcat (temp, file_suffix);
2608 if (access_check (temp, mode) == 0)
2610 if (pl->used_flag_ptr != 0)
2611 *pl->used_flag_ptr = 1;
2616 strcpy (temp, pl->prefix);
2617 strcat (temp, name);
2618 if (access_check (temp, mode) == 0)
2620 if (pl->used_flag_ptr != 0)
2621 *pl->used_flag_ptr = 1;
2631 /* Ranking of prefixes in the sort list. -B prefixes are put before
2634 enum path_prefix_priority
2636 PREFIX_PRIORITY_B_OPT,
2637 PREFIX_PRIORITY_LAST
2640 /* Add an entry for PREFIX in PLIST. The PLIST is kept in assending
2641 order according to PRIORITY. Within each PRIORITY, new entries are
2644 If WARN is nonzero, we will warn if no file is found
2645 through this prefix. WARN should point to an int
2646 which will be set to 1 if this entry is used.
2648 COMPONENT is the value to be passed to update_path.
2650 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2651 the complete value of machine_suffix.
2652 2 means try both machine_suffix and just_machine_suffix. */
2655 add_prefix (pprefix, prefix, component, priority, require_machine_suffix, warn)
2656 struct path_prefix *pprefix;
2658 const char *component;
2659 /* enum prefix_priority */ int priority;
2660 int require_machine_suffix;
2663 struct prefix_list *pl, **prev;
2666 for (prev = &pprefix->plist;
2667 (*prev) != NULL && (*prev)->priority <= priority;
2668 prev = &(*prev)->next)
2671 /* Keep track of the longest prefix */
2673 prefix = update_path (prefix, component);
2674 len = strlen (prefix);
2675 if (len > pprefix->max_len)
2676 pprefix->max_len = len;
2678 pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
2679 pl->prefix = prefix;
2680 pl->require_machine_suffix = require_machine_suffix;
2681 pl->used_flag_ptr = warn;
2682 pl->priority = priority;
2686 /* Insert after PREV */
2691 /* Execute the command specified by the arguments on the current line of spec.
2692 When using pipes, this includes several piped-together commands
2693 with `|' between them.
2695 Return 0 if successful, -1 if failed. */
2701 int n_commands; /* # of command. */
2705 const char *prog; /* program name. */
2706 const char **argv; /* vector of args. */
2707 int pid; /* pid of process for this command. */
2710 struct command *commands; /* each command buffer with above info. */
2712 /* Count # of piped commands. */
2713 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2714 if (strcmp (argbuf[i], "|") == 0)
2717 /* Get storage for each command. */
2718 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2720 /* Split argbuf into its separate piped processes,
2721 and record info about each one.
2722 Also search for the programs that are to be run. */
2724 commands[0].prog = argbuf[0]; /* first command. */
2725 commands[0].argv = &argbuf[0];
2726 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK);
2729 commands[0].argv[0] = string;
2731 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2732 if (strcmp (argbuf[i], "|") == 0)
2733 { /* each command. */
2734 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2735 fatal ("-pipe not supported");
2737 argbuf[i] = 0; /* termination of command args. */
2738 commands[n_commands].prog = argbuf[i + 1];
2739 commands[n_commands].argv = &argbuf[i + 1];
2740 string = find_a_file (&exec_prefixes, commands[n_commands].prog, X_OK);
2742 commands[n_commands].argv[0] = string;
2746 argbuf[argbuf_index] = 0;
2748 /* If -v, print what we are about to do, and maybe query. */
2752 /* For help listings, put a blank line between sub-processes. */
2753 if (print_help_list)
2754 fputc ('\n', stderr);
2756 /* Print each piped command as a separate line. */
2757 for (i = 0; i < n_commands; i++)
2759 const char *const *j;
2761 if (verbose_only_flag)
2763 for (j = commands[i].argv; *j; j++)
2766 fprintf (stderr, " \"");
2767 for (p = *j; *p; ++p)
2769 if (*p == '"' || *p == '\\' || *p == '$')
2770 fputc ('\\', stderr);
2773 fputc ('"', stderr);
2777 for (j = commands[i].argv; *j; j++)
2778 fprintf (stderr, " %s", *j);
2780 /* Print a pipe symbol after all but the last command. */
2781 if (i + 1 != n_commands)
2782 fprintf (stderr, " |");
2783 fprintf (stderr, "\n");
2786 if (verbose_only_flag != 0)
2789 notice ("\nGo ahead? (y or n) ");
2793 while (getchar () != '\n')
2796 if (i != 'y' && i != 'Y')
2801 /* Run each piped subprocess. */
2803 for (i = 0; i < n_commands; i++)
2805 char *errmsg_fmt, *errmsg_arg;
2806 const char *string = commands[i].argv[0];
2808 /* For some bizarre reason, the second argument of execvp() is
2809 char *const *, not const char *const *. */
2810 commands[i].pid = pexecute (string, (char *const *) commands[i].argv,
2811 programname, temp_filename,
2812 &errmsg_fmt, &errmsg_arg,
2813 ((i == 0 ? PEXECUTE_FIRST : 0)
2814 | (i + 1 == n_commands ? PEXECUTE_LAST : 0)
2815 | (string == commands[i].prog
2816 ? PEXECUTE_SEARCH : 0)
2817 | (verbose_flag ? PEXECUTE_VERBOSE : 0)));
2819 if (commands[i].pid == -1)
2820 pfatal_pexecute (errmsg_fmt, errmsg_arg);
2822 if (string != commands[i].prog)
2823 free ((PTR) string);
2828 /* Wait for all the subprocesses to finish.
2829 We don't care what order they finish in;
2830 we know that N_COMMANDS waits will get them all.
2831 Ignore subprocesses that we don't know about,
2832 since they can be spawned by the process that exec'ed us. */
2836 #ifdef HAVE_GETRUSAGE
2838 double ut = 0.0, st = 0.0;
2841 for (i = 0; i < n_commands;)
2847 pid = pwait (commands[i].pid, &status, 0);
2851 #ifdef HAVE_GETRUSAGE
2854 /* getrusage returns the total resource usage of all children
2855 up to now. Copy the previous values into prus, get the
2856 current statistics, then take the difference. */
2859 getrusage (RUSAGE_CHILDREN, &rus);
2860 d.tv_sec = rus.ru_utime.tv_sec - prus.ru_utime.tv_sec;
2861 d.tv_usec = rus.ru_utime.tv_usec - prus.ru_utime.tv_usec;
2862 ut = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2864 d.tv_sec = rus.ru_stime.tv_sec - prus.ru_stime.tv_sec;
2865 d.tv_usec = rus.ru_stime.tv_usec - prus.ru_stime.tv_usec;
2866 st = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2870 for (j = 0; j < n_commands; j++)
2871 if (commands[j].pid == pid)
2874 if (WIFSIGNALED (status))
2877 /* SIGPIPE is a special case. It happens in -pipe mode
2878 when the compiler dies before the preprocessor is
2879 done, or the assembler dies before the compiler is
2880 done. There's generally been an error already, and
2881 this is just fallout. So don't generate another error
2882 unless we would otherwise have succeeded. */
2883 if (WTERMSIG (status) == SIGPIPE
2884 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2889 Internal error: %s (program %s)\n\
2890 Please submit a full bug report.\n\
2891 See %s for instructions.",
2892 strsignal (WTERMSIG (status)), commands[j].prog,
2897 else if (WIFEXITED (status)
2898 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2900 if (WEXITSTATUS (status) > greatest_status)
2901 greatest_status = WEXITSTATUS (status);
2904 #ifdef HAVE_GETRUSAGE
2905 if (report_times && ut + st != 0)
2906 notice ("# %s %.2f %.2f\n", commands[j].prog, ut, st);
2915 /* Find all the switches given to us
2916 and make a vector describing them.
2917 The elements of the vector are strings, one per switch given.
2918 If a switch uses following arguments, then the `part1' field
2919 is the switch itself and the `args' field
2920 is a null-terminated vector containing the following arguments.
2921 The `live_cond' field is:
2923 1 if the switch is true in a conditional spec,
2924 -1 if false (overridden by a later switch)
2925 -2 if this switch should be ignored (used in %{<S})
2926 The `validated' field is nonzero if any spec has looked at this switch;
2927 if it remains zero at the end of the run, it must be meaningless. */
2930 #define SWITCH_FALSE -1
2931 #define SWITCH_IGNORE -2
2932 #define SWITCH_LIVE 1
2939 unsigned char validated;
2940 unsigned char ordering;
2943 static struct switchstr *switches;
2945 static int n_switches;
2950 const char *language;
2953 /* Also a vector of input files specified. */
2955 static struct infile *infiles;
2959 /* This counts the number of libraries added by lang_specific_driver, so that
2960 we can tell if there were any user supplied any files or libraries. */
2962 static int added_libraries;
2964 /* And a vector of corresponding output files is made up later. */
2966 const char **outfiles;
2968 /* Used to track if none of the -B paths are used. */
2971 /* Used to track if standard path isn't used and -b or -V is specified. */
2972 static int warn_std;
2974 /* Gives value to pass as "warn" to add_prefix for standard prefixes. */
2975 static int *warn_std_ptr = 0;
2977 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2979 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2980 is true if we should look for an executable suffix. DO_OBJ
2981 is true if we should look for an object suffix. */
2984 convert_filename (name, do_exe, do_obj)
2986 int do_exe ATTRIBUTE_UNUSED;
2987 int do_obj ATTRIBUTE_UNUSED;
2989 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2997 len = strlen (name);
2999 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3000 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
3001 if (do_obj && len > 2
3002 && name[len - 2] == '.'
3003 && name[len - 1] == 'o')
3005 obstack_grow (&obstack, name, len - 2);
3006 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
3007 name = obstack_finish (&obstack);
3011 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3012 /* If there is no filetype, make it the executable suffix (which includes
3013 the "."). But don't get confused if we have just "-o". */
3014 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
3017 for (i = len - 1; i >= 0; i--)
3018 if (IS_DIR_SEPARATOR (name[i]))
3021 for (i++; i < len; i++)
3025 obstack_grow (&obstack, name, len);
3026 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
3027 strlen (TARGET_EXECUTABLE_SUFFIX));
3028 name = obstack_finish (&obstack);
3035 /* Display the command line switches accepted by gcc. */
3039 printf (_("Usage: %s [options] file...\n"), programname);
3040 fputs (_("Options:\n"), stdout);
3042 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
3043 fputs (_(" --help Display this information\n"), stdout);
3044 fputs (_(" --target-help Display target specific command line options\n"), stdout);
3046 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
3047 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
3048 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
3049 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
3050 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
3051 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
3052 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
3053 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
3054 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
3056 -print-multi-lib Display the mapping between command line options and\n\
3057 multiple library search directories\n"), stdout);
3058 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3059 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3060 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3061 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3062 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3063 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3064 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3065 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3066 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3067 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3068 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
3069 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
3070 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3071 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3072 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3073 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3074 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3075 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3077 -x <language> Specify the language of the following input files\n\
3078 Permissable languages include: c c++ assembler none\n\
3079 'none' means revert to the default behavior of\n\
3080 guessing the language based on the file's extension\n\
3084 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3085 passed on to the various sub-processes invoked by %s. In order to pass\n\
3086 other options on to these processes the -W<letter> options must be used.\n\
3089 /* The rest of the options are displayed by invocations of the various
3094 add_preprocessor_option (option, len)
3098 n_preprocessor_options++;
3100 if (! preprocessor_options)
3101 preprocessor_options
3102 = (char **) xmalloc (n_preprocessor_options * sizeof (char *));
3104 preprocessor_options
3105 = (char **) xrealloc (preprocessor_options,
3106 n_preprocessor_options * sizeof (char *));
3108 preprocessor_options [n_preprocessor_options - 1] =
3109 save_string (option, len);
3113 add_assembler_option (option, len)
3117 n_assembler_options++;
3119 if (! assembler_options)
3121 = (char **) xmalloc (n_assembler_options * sizeof (char *));
3124 = (char **) xrealloc (assembler_options,
3125 n_assembler_options * sizeof (char *));
3127 assembler_options [n_assembler_options - 1] = save_string (option, len);
3131 add_linker_option (option, len)
3137 if (! linker_options)
3139 = (char **) xmalloc (n_linker_options * sizeof (char *));
3142 = (char **) xrealloc (linker_options,
3143 n_linker_options * sizeof (char *));
3145 linker_options [n_linker_options - 1] = save_string (option, len);
3148 /* Create the vector `switches' and its contents.
3149 Store its length in `n_switches'. */
3152 process_command (argc, argv)
3154 const char *const *argv;
3159 const char *spec_lang = 0;
3160 int last_language_n_infiles;
3163 int lang_n_infiles = 0;
3164 #ifdef MODIFY_TARGET_NAME
3165 int is_modify_target_name;
3169 GET_ENV_PATH_LIST (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3173 added_libraries = 0;
3175 /* Figure compiler version from version string. */
3177 compiler_version = temp1 = xstrdup (version_string);
3179 for (; *temp1; ++temp1)
3188 /* If there is a -V or -b option (or both), process it now, before
3189 trying to interpret the rest of the command line. */
3190 if (argc > 1 && argv[1][0] == '-'
3191 && (argv[1][1] == 'V' || argv[1][1] == 'b'))
3193 const char *new_version = DEFAULT_TARGET_VERSION;
3194 const char *new_machine = DEFAULT_TARGET_MACHINE;
3195 const char *progname = argv[0];
3200 while (argc > 1 && argv[1][0] == '-'
3201 && (argv[1][1] == 'V' || argv[1][1] == 'b'))
3203 char opt = argv[1][1];
3205 if (argv[1][2] != '\0')
3218 fatal ("`-%c' option must have argument", opt);
3225 for (baselen = strlen (progname); baselen > 0; baselen--)
3226 if (IS_DIR_SEPARATOR (progname[baselen-1]))
3228 new_argv0 = xmemdup (progname, baselen,
3229 baselen + concat_length (new_version, new_machine,
3230 "-gcc-", NULL) + 1);
3231 strcpy (new_argv0 + baselen, new_machine);
3232 strcat (new_argv0, "-gcc-");
3233 strcat (new_argv0, new_version);
3235 new_argv = xmemdup (argv, (argc + 1) * sizeof (argv[0]),
3236 (argc + 1) * sizeof (argv[0]));
3237 new_argv[0] = new_argv0;
3239 execvp (new_argv0, new_argv);
3240 fatal ("couldn't run `%s': %s", new_argv0, xstrerror (errno));
3243 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3244 see if we can create it from the pathname specified in argv[0]. */
3247 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3248 if (!gcc_exec_prefix)
3250 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
3251 standard_exec_prefix);
3252 if (gcc_exec_prefix)
3253 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3257 if (gcc_exec_prefix)
3259 int len = strlen (gcc_exec_prefix);
3261 if (len > (int) sizeof ("/lib/gcc-lib/") - 1
3262 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3264 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc-lib/") + 1;
3265 if (IS_DIR_SEPARATOR (*temp)
3266 && strncmp (temp + 1, "lib", 3) == 0
3267 && IS_DIR_SEPARATOR (temp[4])
3268 && strncmp (temp + 5, "gcc-lib", 7) == 0)
3269 len -= sizeof ("/lib/gcc-lib/") - 1;
3272 set_std_prefix (gcc_exec_prefix, len);
3273 add_prefix (&exec_prefixes, gcc_exec_prefix, "GCC",
3274 PREFIX_PRIORITY_LAST, 0, NULL);
3275 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3276 PREFIX_PRIORITY_LAST, 0, NULL);
3279 /* COMPILER_PATH and LIBRARY_PATH have values
3280 that are lists of directory names with colons. */
3282 GET_ENV_PATH_LIST (temp, "COMPILER_PATH");
3285 const char *startp, *endp;
3286 char *nstore = (char *) alloca (strlen (temp) + 3);
3288 startp = endp = temp;
3291 if (*endp == PATH_SEPARATOR || *endp == 0)
3293 strncpy (nstore, startp, endp - startp);
3295 strcpy (nstore, concat (".", dir_separator_str, NULL));
3296 else if (!IS_DIR_SEPARATOR (endp[-1]))
3298 nstore[endp - startp] = DIR_SEPARATOR;
3299 nstore[endp - startp + 1] = 0;
3302 nstore[endp - startp] = 0;
3303 add_prefix (&exec_prefixes, nstore, 0,
3304 PREFIX_PRIORITY_LAST, 0, NULL);
3305 add_prefix (&include_prefixes,
3306 concat (nstore, "include", NULL),
3307 0, PREFIX_PRIORITY_LAST, 0, NULL);
3310 endp = startp = endp + 1;
3317 GET_ENV_PATH_LIST (temp, LIBRARY_PATH_ENV);
3318 if (temp && *cross_compile == '0')
3320 const char *startp, *endp;
3321 char *nstore = (char *) alloca (strlen (temp) + 3);
3323 startp = endp = temp;
3326 if (*endp == PATH_SEPARATOR || *endp == 0)
3328 strncpy (nstore, startp, endp - startp);
3330 strcpy (nstore, concat (".", dir_separator_str, NULL));
3331 else if (!IS_DIR_SEPARATOR (endp[-1]))
3333 nstore[endp - startp] = DIR_SEPARATOR;
3334 nstore[endp - startp + 1] = 0;
3337 nstore[endp - startp] = 0;
3338 add_prefix (&startfile_prefixes, nstore, NULL,
3339 PREFIX_PRIORITY_LAST, 0, NULL);
3342 endp = startp = endp + 1;
3349 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3350 GET_ENV_PATH_LIST (temp, "LPATH");
3351 if (temp && *cross_compile == '0')
3353 const char *startp, *endp;
3354 char *nstore = (char *) alloca (strlen (temp) + 3);
3356 startp = endp = temp;
3359 if (*endp == PATH_SEPARATOR || *endp == 0)
3361 strncpy (nstore, startp, endp - startp);
3363 strcpy (nstore, concat (".", dir_separator_str, NULL));
3364 else if (!IS_DIR_SEPARATOR (endp[-1]))
3366 nstore[endp - startp] = DIR_SEPARATOR;
3367 nstore[endp - startp + 1] = 0;
3370 nstore[endp - startp] = 0;
3371 add_prefix (&startfile_prefixes, nstore, NULL,
3372 PREFIX_PRIORITY_LAST, 0, NULL);
3375 endp = startp = endp + 1;
3382 /* Convert new-style -- options to old-style. */
3383 translate_options (&argc, &argv);
3385 /* Do language-specific adjustment/addition of flags. */
3386 lang_specific_driver (&argc, &argv, &added_libraries);
3388 /* Scan argv twice. Here, the first time, just count how many switches
3389 there will be in their vector, and how many input files in theirs.
3390 Here we also parse the switches that cc itself uses (e.g. -v). */
3392 for (i = 1; i < argc; i++)
3394 if (! strcmp (argv[i], "-dumpspecs"))
3396 struct spec_list *sl;
3398 for (sl = specs; sl; sl = sl->next)
3399 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3400 if (link_command_spec)
3401 printf ("*link_command:\n%s\n\n", link_command_spec);
3404 else if (! strcmp (argv[i], "-dumpversion"))
3406 printf ("%s\n", spec_version);
3409 else if (! strcmp (argv[i], "-dumpmachine"))
3411 printf ("%s\n", spec_machine);
3414 else if (strcmp (argv[i], "-fversion") == 0)
3416 /* translate_options () has turned --version into -fversion. */
3417 printf (_("%s (GCC) %s\n"), programname, version_string);
3418 fputs (_("Copyright (C) 2002 Free Software Foundation, Inc.\n"),
3420 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
3421 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
3425 else if (strcmp (argv[i], "-fhelp") == 0)
3427 /* translate_options () has turned --help into -fhelp. */
3428 print_help_list = 1;
3430 /* We will be passing a dummy file on to the sub-processes. */
3434 /* CPP driver cannot obtain switch from cc1_options. */
3436 add_preprocessor_option ("--help", 6);
3437 add_assembler_option ("--help", 6);
3438 add_linker_option ("--help", 6);
3440 else if (strcmp (argv[i], "-ftarget-help") == 0)
3442 /* translate_options() has turned --target-help into -ftarget-help. */
3443 target_help_flag = 1;
3445 /* We will be passing a dummy file on to the sub-processes. */
3449 /* CPP driver cannot obtain switch from cc1_options. */
3451 add_preprocessor_option ("--target-help", 13);
3452 add_assembler_option ("--target-help", 13);
3453 add_linker_option ("--target-help", 13);
3455 else if (! strcmp (argv[i], "-pass-exit-codes"))
3457 pass_exit_codes = 1;
3460 else if (! strcmp (argv[i], "-print-search-dirs"))
3461 print_search_dirs = 1;
3462 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3463 print_file_name = "libgcc.a";
3464 else if (! strncmp (argv[i], "-print-file-name=", 17))
3465 print_file_name = argv[i] + 17;
3466 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3467 print_prog_name = argv[i] + 17;
3468 else if (! strcmp (argv[i], "-print-multi-lib"))
3469 print_multi_lib = 1;
3470 else if (! strcmp (argv[i], "-print-multi-directory"))
3471 print_multi_directory = 1;
3472 else if (! strncmp (argv[i], "-Wa,", 4))
3475 /* Pass the rest of this option to the assembler. */
3477 /* Split the argument at commas. */
3479 for (j = 4; argv[i][j]; j++)
3480 if (argv[i][j] == ',')
3482 add_assembler_option (argv[i] + prev, j - prev);
3486 /* Record the part after the last comma. */
3487 add_assembler_option (argv[i] + prev, j - prev);
3489 else if (! strncmp (argv[i], "-Wp,", 4))
3492 /* Pass the rest of this option to the preprocessor. */
3494 /* Split the argument at commas. */
3496 for (j = 4; argv[i][j]; j++)
3497 if (argv[i][j] == ',')
3499 add_preprocessor_option (argv[i] + prev, j - prev);
3503 /* Record the part after the last comma. */
3504 add_preprocessor_option (argv[i] + prev, j - prev);
3506 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3507 /* The +e options to the C++ front-end. */
3509 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3512 /* Split the argument at commas. */
3513 for (j = 3; argv[i][j]; j++)
3514 n_infiles += (argv[i][j] == ',');
3516 else if (strcmp (argv[i], "-Xlinker") == 0)
3519 fatal ("argument to `-Xlinker' is missing");
3524 else if (strcmp (argv[i], "-l") == 0)
3527 fatal ("argument to `-l' is missing");
3532 else if (strncmp (argv[i], "-l", 2) == 0)
3534 else if (strcmp (argv[i], "-save-temps") == 0)
3536 save_temps_flag = 1;
3539 else if (strcmp (argv[i], "-specs") == 0)
3541 struct user_specs *user = (struct user_specs *)
3542 xmalloc (sizeof (struct user_specs));
3544 fatal ("argument to `-specs' is missing");
3546 user->next = (struct user_specs *) 0;
3547 user->filename = argv[i];
3548 if (user_specs_tail)
3549 user_specs_tail->next = user;
3551 user_specs_head = user;
3552 user_specs_tail = user;
3554 else if (strncmp (argv[i], "-specs=", 7) == 0)
3556 struct user_specs *user = (struct user_specs *)
3557 xmalloc (sizeof (struct user_specs));
3558 if (strlen (argv[i]) == 7)
3559 fatal ("argument to `-specs=' is missing");
3561 user->next = (struct user_specs *) 0;
3562 user->filename = argv[i] + 7;
3563 if (user_specs_tail)
3564 user_specs_tail->next = user;
3566 user_specs_head = user;
3567 user_specs_tail = user;
3569 else if (strcmp (argv[i], "-time") == 0)
3571 else if (strcmp (argv[i], "-###") == 0)
3573 /* This is similar to -v except that there is no execution
3574 of the commands and the echoed arguments are quoted. It
3575 is intended for use in shell scripts to capture the
3576 driver-generated command line. */
3577 verbose_only_flag++;
3580 else if (argv[i][0] == '-' && argv[i][1] != 0)
3582 const char *p = &argv[i][1];
3589 fatal ("`-%c' must come at the start of the command line", c);
3597 if (p[1] == 0 && i + 1 == argc)
3598 fatal ("argument to `-B' is missing");
3604 len = strlen (value);
3606 /* Catch the case where the user has forgotten to append a
3607 directory separator to the path. Note, they may be using
3608 -B to add an executable name prefix, eg "i386-elf-", in
3609 order to distinguish between multiple installations of
3610 GCC in the same directory. Hence we must check to see
3611 if appending a directory separator actually makes a
3612 valid directory name. */
3613 if (! IS_DIR_SEPARATOR (value [len - 1])
3614 && is_directory (value, "", 0))
3616 char *tmp = xmalloc (len + 2);
3617 strcpy (tmp, value);
3618 tmp[len] = DIR_SEPARATOR;
3623 /* As a kludge, if the arg is "[foo/]stageN/", just
3624 add "[foo/]include" to the include prefix. */
3627 && (IS_DIR_SEPARATOR (value[len - 8]))))
3628 && strncmp (value + len - 7, "stage", 5) == 0
3629 && ISDIGIT (value[len - 2])
3630 && (IS_DIR_SEPARATOR (value[len - 1])))
3633 add_prefix (&include_prefixes, "include", NULL,
3634 PREFIX_PRIORITY_B_OPT, 0, NULL);
3637 char * string = xmalloc (len + 1);
3639 strncpy (string, value, len - 7);
3640 strcpy (string + len - 7, "include");
3641 add_prefix (&include_prefixes, string, NULL,
3642 PREFIX_PRIORITY_B_OPT, 0, NULL);
3646 add_prefix (&exec_prefixes, value, NULL,
3647 PREFIX_PRIORITY_B_OPT, 0, &warn_B);
3648 add_prefix (&startfile_prefixes, value, NULL,
3649 PREFIX_PRIORITY_B_OPT, 0, &warn_B);
3650 add_prefix (&include_prefixes, concat (value, "include", NULL),
3651 NULL, PREFIX_PRIORITY_B_OPT, 0, NULL);
3656 case 'v': /* Print our subcommands and print versions. */
3658 /* If they do anything other than exactly `-v', don't set
3659 verbose_flag; rather, continue on to give the error. */
3677 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3682 /* Forward scan, just in case -S or -c is specified
3689 if (argv[j][0] == '-')
3691 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
3697 else if ((skip = SWITCH_TAKES_ARG (argv[j][1])))
3698 j += skip - (argv[j][2] != 0);
3699 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1)))
3706 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3708 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0);
3710 argv[i] = convert_filename (argv[i], ! have_c, 0);
3717 #ifdef MODIFY_TARGET_NAME
3718 is_modify_target_name = 0;
3720 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3721 if (! strcmp (argv[i], modify_target[j].sw))
3724 = (char *) xmalloc (strlen (modify_target[j].str)
3725 + strlen (spec_machine));
3728 int made_addition = 0;
3730 is_modify_target_name = 1;
3731 for (p = spec_machine, q = new_name; *p != 0; )
3733 if (modify_target[j].add_del == DELETE
3734 && (! strncmp (q, modify_target[j].str,
3735 strlen (modify_target[j].str))))
3736 p += strlen (modify_target[j].str);
3737 else if (modify_target[j].add_del == ADD
3738 && ! made_addition && *p == '-')
3740 for (r = modify_target[j].str; *r != 0; )
3748 spec_machine = new_name;
3751 if (is_modify_target_name)
3757 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
3758 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
3759 else if (WORD_SWITCH_TAKES_ARG (p))
3760 i += WORD_SWITCH_TAKES_ARG (p);
3770 if (have_c && have_o && lang_n_infiles > 1)
3771 fatal ("cannot specify -o with -c or -S and multiple compilations");
3773 /* Set up the search paths before we go looking for config files. */
3775 /* These come before the md prefixes so that we will find gcc's subcommands
3776 (such as cpp) rather than those of the host system. */
3777 /* Use 2 as fourth arg meaning try just the machine as a suffix,
3778 as well as trying the machine and the version. */
3780 add_prefix (&exec_prefixes, standard_exec_prefix, "GCC",
3781 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3782 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3783 PREFIX_PRIORITY_LAST, 2, warn_std_ptr);
3784 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS",
3785 PREFIX_PRIORITY_LAST, 2, warn_std_ptr);
3788 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3789 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3790 add_prefix (&startfile_prefixes, standard_exec_prefix_1, "BINUTILS",
3791 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3793 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3794 dir_separator_str, NULL);
3796 /* If tooldir is relative, base it on exec_prefixes. A relative
3797 tooldir lets us move the installed tree as a unit.
3799 If GCC_EXEC_PREFIX is defined, then we want to add two relative
3800 directories, so that we can search both the user specified directory
3801 and the standard place. */
3803 if (!IS_ABSOLUTE_PATHNAME (tooldir_prefix))
3805 if (gcc_exec_prefix)
3807 char *gcc_exec_tooldir_prefix
3808 = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
3809 spec_version, dir_separator_str, tooldir_prefix, NULL);
3811 add_prefix (&exec_prefixes,
3812 concat (gcc_exec_tooldir_prefix, "bin",
3813 dir_separator_str, NULL),
3814 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
3815 add_prefix (&startfile_prefixes,
3816 concat (gcc_exec_tooldir_prefix, "lib",
3817 dir_separator_str, NULL),
3818 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
3821 tooldir_prefix = concat (standard_exec_prefix, spec_machine,
3822 dir_separator_str, spec_version,
3823 dir_separator_str, tooldir_prefix, NULL);
3826 add_prefix (&exec_prefixes,
3827 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3828 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
3829 add_prefix (&startfile_prefixes,
3830 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3831 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
3833 /* More prefixes are enabled in main, after we read the specs file
3834 and determine whether this is cross-compilation or not. */
3836 /* Then create the space for the vectors and scan again. */
3838 switches = ((struct switchstr *)
3839 xmalloc ((n_switches + 1) * sizeof (struct switchstr)));
3840 infiles = (struct infile *) xmalloc ((n_infiles + 1) * sizeof (struct infile));
3843 last_language_n_infiles = -1;
3845 /* This, time, copy the text of each switch and store a pointer
3846 to the copy in the vector of switches.
3847 Store all the infiles in their vector. */
3849 for (i = 1; i < argc; i++)
3851 /* Just skip the switches that were handled by the preceding loop. */
3852 #ifdef MODIFY_TARGET_NAME
3853 is_modify_target_name = 0;
3855 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3856 if (! strcmp (argv[i], modify_target[j].sw))
3857 is_modify_target_name = 1;
3859 if (is_modify_target_name)
3863 if (! strncmp (argv[i], "-Wa,", 4))
3865 else if (! strncmp (argv[i], "-Wp,", 4))
3867 else if (! strcmp (argv[i], "-pass-exit-codes"))
3869 else if (! strcmp (argv[i], "-print-search-dirs"))
3871 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3873 else if (! strncmp (argv[i], "-print-file-name=", 17))
3875 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3877 else if (! strcmp (argv[i], "-print-multi-lib"))
3879 else if (! strcmp (argv[i], "-print-multi-directory"))
3881 else if (! strcmp (argv[i], "-ftarget-help"))
3883 else if (! strcmp (argv[i], "-fhelp"))
3885 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3887 /* Compensate for the +e options to the C++ front-end;
3888 they're there simply for cfront call-compatibility. We do
3889 some magic in default_compilers to pass them down properly.
3890 Note we deliberately start at the `+' here, to avoid passing
3891 -e0 or -e1 down into the linker. */
3892 switches[n_switches].part1 = &argv[i][0];
3893 switches[n_switches].args = 0;
3894 switches[n_switches].live_cond = SWITCH_OK;
3895 switches[n_switches].validated = 0;
3898 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3901 /* Split the argument at commas. */
3903 for (j = 4; argv[i][j]; j++)
3904 if (argv[i][j] == ',')
3906 infiles[n_infiles].language = "*";
3907 infiles[n_infiles++].name
3908 = save_string (argv[i] + prev, j - prev);
3911 /* Record the part after the last comma. */
3912 infiles[n_infiles].language = "*";
3913 infiles[n_infiles++].name = argv[i] + prev;
3915 else if (strcmp (argv[i], "-Xlinker") == 0)
3917 infiles[n_infiles].language = "*";
3918 infiles[n_infiles++].name = argv[++i];
3920 else if (strcmp (argv[i], "-l") == 0)
3921 { /* POSIX allows separation of -l and the lib arg;
3922 canonicalize by concatenating -l with its arg */
3923 infiles[n_infiles].language = "*";
3924 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL);
3926 else if (strncmp (argv[i], "-l", 2) == 0)
3928 infiles[n_infiles].language = "*";
3929 infiles[n_infiles++].name = argv[i];
3931 else if (strcmp (argv[i], "-specs") == 0)
3933 else if (strncmp (argv[i], "-specs=", 7) == 0)
3935 else if (strcmp (argv[i], "-time") == 0)
3937 else if ((save_temps_flag || report_times)
3938 && strcmp (argv[i], "-pipe") == 0)
3940 /* -save-temps overrides -pipe, so that temp files are produced */
3941 if (save_temps_flag)
3942 error ("warning: -pipe ignored because -save-temps specified");
3943 /* -time overrides -pipe because we can't get correct stats when
3944 multiple children are running at once. */
3945 else if (report_times)
3946 error ("warning: -pipe ignored because -time specified");
3948 else if (strcmp (argv[i], "-###") == 0)
3950 else if (argv[i][0] == '-' && argv[i][1] != 0)
3952 const char *p = &argv[i][1];
3957 if (p[1] == 0 && i + 1 == argc)
3958 fatal ("argument to `-x' is missing");
3960 spec_lang = argv[++i];
3963 if (! strcmp (spec_lang, "none"))
3964 /* Suppress the warning if -xnone comes after the last input
3965 file, because alternate command interfaces like g++ might
3966 find it useful to place -xnone after each input file. */
3969 last_language_n_infiles = n_infiles;
3972 switches[n_switches].part1 = p;
3973 /* Deal with option arguments in separate argv elements. */
3974 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
3975 || WORD_SWITCH_TAKES_ARG (p))
3978 int n_args = WORD_SWITCH_TAKES_ARG (p);
3982 /* Count only the option arguments in separate argv elements. */
3983 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
3985 if (i + n_args >= argc)
3986 fatal ("argument to `-%s' is missing", p);
3987 switches[n_switches].args
3988 = (const char **) xmalloc ((n_args + 1) * sizeof(const char *));
3990 switches[n_switches].args[j++] = argv[++i];
3991 /* Null-terminate the vector. */
3992 switches[n_switches].args[j] = 0;
3994 else if (strchr (switches_need_spaces, c))
3996 /* On some systems, ld cannot handle some options without
3997 a space. So split the option from its argument. */
3998 char *part1 = (char *) xmalloc (2);
4002 switches[n_switches].part1 = part1;
4003 switches[n_switches].args
4004 = (const char **) xmalloc (2 * sizeof (const char *));
4005 switches[n_switches].args[0] = xstrdup (p+1);
4006 switches[n_switches].args[1] = 0;
4009 switches[n_switches].args = 0;
4011 switches[n_switches].live_cond = SWITCH_OK;
4012 switches[n_switches].validated = 0;
4013 switches[n_switches].ordering = 0;
4014 /* These are always valid, since gcc.c itself understands it. */
4015 if (!strcmp (p, "save-temps")
4016 || !strcmp (p, "static-libgcc")
4017 || !strcmp (p, "shared-libgcc"))
4018 switches[n_switches].validated = 1;
4021 char ch = switches[n_switches].part1[0];
4023 switches[n_switches].validated = 1;
4029 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4030 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
4033 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
4035 perror_with_name (argv[i]);
4040 infiles[n_infiles].language = spec_lang;
4041 infiles[n_infiles++].name = argv[i];
4046 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4047 error ("warning: `-x %s' after last input file has no effect", spec_lang);
4049 /* Ensure we only invoke each subprocess once. */
4050 if (target_help_flag || print_help_list)
4054 /* Create a dummy input file, so that we can pass --target-help on to
4055 the various sub-processes. */
4056 infiles[0].language = "c";
4057 infiles[0].name = "help-dummy";
4059 if (target_help_flag)
4061 switches[n_switches].part1 = "--target-help";
4062 switches[n_switches].args = 0;
4063 switches[n_switches].live_cond = SWITCH_OK;
4064 switches[n_switches].validated = 0;
4069 if (print_help_list)
4071 switches[n_switches].part1 = "--help";
4072 switches[n_switches].args = 0;
4073 switches[n_switches].live_cond = SWITCH_OK;
4074 switches[n_switches].validated = 0;
4080 switches[n_switches].part1 = 0;
4081 infiles[n_infiles].name = 0;
4084 /* Store switches not filtered out by %{<S} in spec in COLLECT_GCC_OPTIONS
4085 and place that in the environment. */
4088 set_collect_gcc_options ()
4093 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4095 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4096 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4099 for (i = 0; (int) i < n_switches; i++)
4101 const char *const *args;
4104 obstack_grow (&collect_obstack, " ", 1);
4108 /* Ignore elided switches. */
4109 if (switches[i].live_cond == SWITCH_IGNORE)
4112 obstack_grow (&collect_obstack, "'-", 2);
4113 q = switches[i].part1;
4114 while ((p = strchr (q, '\'')))
4116 obstack_grow (&collect_obstack, q, p - q);
4117 obstack_grow (&collect_obstack, "'\\''", 4);
4120 obstack_grow (&collect_obstack, q, strlen (q));
4121 obstack_grow (&collect_obstack, "'", 1);
4123 for (args = switches[i].args; args && *args; args++)
4125 obstack_grow (&collect_obstack, " '", 2);
4127 while ((p = strchr (q, '\'')))
4129 obstack_grow (&collect_obstack, q, p - q);
4130 obstack_grow (&collect_obstack, "'\\''", 4);
4133 obstack_grow (&collect_obstack, q, strlen (q));
4134 obstack_grow (&collect_obstack, "'", 1);
4137 obstack_grow (&collect_obstack, "\0", 1);
4138 putenv (obstack_finish (&collect_obstack));
4141 /* Process a spec string, accumulating and running commands. */
4143 /* These variables describe the input file name.
4144 input_file_number is the index on outfiles of this file,
4145 so that the output file name can be stored for later use by %o.
4146 input_basename is the start of the part of the input file
4147 sans all directory names, and basename_length is the number
4148 of characters starting there excluding the suffix .c or whatever. */
4150 const char *input_filename;
4151 static int input_file_number;
4152 size_t input_filename_length;
4153 static int basename_length;
4154 static int suffixed_basename_length;
4155 static const char *input_basename;
4156 static const char *input_suffix;
4157 static struct stat input_stat;
4158 static int input_stat_set;
4160 /* The compiler used to process the current input file. */
4161 static struct compiler *input_file_compiler;
4163 /* These are variables used within do_spec and do_spec_1. */
4165 /* Nonzero if an arg has been started and not yet terminated
4166 (with space, tab or newline). */
4167 static int arg_going;
4169 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4170 is a temporary file name. */
4171 static int delete_this_arg;
4173 /* Nonzero means %w has been seen; the next arg to be terminated
4174 is the output file name of this compilation. */
4175 static int this_is_output_file;
4177 /* Nonzero means %s has been seen; the next arg to be terminated
4178 is the name of a library file and we should try the standard
4179 search dirs for it. */
4180 static int this_is_library_file;
4182 /* Nonzero means that the input of this command is coming from a pipe. */
4183 static int input_from_pipe;
4185 /* Nonnull means substitute this for any suffix when outputting a switches
4187 static const char *suffix_subst;
4189 /* Process the spec SPEC and run the commands specified therein.
4190 Returns 0 if the spec is successfully processed; -1 if failed. */
4198 value = do_spec_2 (spec);
4200 /* Force out any unfinished command.
4201 If -pipe, this forces out the last command if it ended in `|'. */
4204 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4207 set_collect_gcc_options ();
4209 if (argbuf_index > 0)
4222 delete_this_arg = 0;
4223 this_is_output_file = 0;
4224 this_is_library_file = 0;
4225 input_from_pipe = 0;
4226 suffix_subst = NULL;
4228 return do_spec_1 (spec, 0, NULL);
4231 /* Process the sub-spec SPEC as a portion of a larger spec.
4232 This is like processing a whole spec except that we do
4233 not initialize at the beginning and we do not supply a
4234 newline by default at the end.
4235 INSWITCH nonzero means don't process %-sequences in SPEC;
4236 in this case, % is treated as an ordinary character.
4237 This is used while substituting switches.
4238 INSWITCH nonzero also causes SPC not to terminate an argument.
4240 Value is zero unless a line was finished
4241 and the command on that line reported an error. */
4244 do_spec_1 (spec, inswitch, soft_matched_part)
4247 const char *soft_matched_part;
4249 const char *p = spec;
4256 /* If substituting a switch, treat all chars like letters.
4257 Otherwise, NL, SPC, TAB and % are special. */
4258 switch (inswitch ? 'a' : c)
4261 /* End of line: finish any pending argument,
4262 then run the pending command if one has been started. */
4265 obstack_1grow (&obstack, 0);
4266 string = obstack_finish (&obstack);
4267 if (this_is_library_file)
4268 string = find_file (string);
4269 store_arg (string, delete_this_arg, this_is_output_file);
4270 if (this_is_output_file)
4271 outfiles[input_file_number] = string;
4275 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4277 for (i = 0; i < n_switches; i++)
4278 if (!strcmp (switches[i].part1, "pipe"))
4281 /* A `|' before the newline means use a pipe here,
4282 but only if -pipe was specified.
4283 Otherwise, execute now and don't pass the `|' as an arg. */
4286 input_from_pipe = 1;
4287 switches[i].validated = 1;
4294 set_collect_gcc_options ();
4296 if (argbuf_index > 0)
4302 /* Reinitialize for a new command, and for a new argument. */
4305 delete_this_arg = 0;
4306 this_is_output_file = 0;
4307 this_is_library_file = 0;
4308 input_from_pipe = 0;
4312 /* End any pending argument. */
4315 obstack_1grow (&obstack, 0);
4316 string = obstack_finish (&obstack);
4317 if (this_is_library_file)
4318 string = find_file (string);
4319 store_arg (string, delete_this_arg, this_is_output_file);
4320 if (this_is_output_file)
4321 outfiles[input_file_number] = string;
4325 obstack_1grow (&obstack, c);
4331 /* Space or tab ends an argument if one is pending. */
4334 obstack_1grow (&obstack, 0);
4335 string = obstack_finish (&obstack);
4336 if (this_is_library_file)
4337 string = find_file (string);
4338 store_arg (string, delete_this_arg, this_is_output_file);
4339 if (this_is_output_file)
4340 outfiles[input_file_number] = string;
4342 /* Reinitialize for a new argument. */
4344 delete_this_arg = 0;
4345 this_is_output_file = 0;
4346 this_is_library_file = 0;
4353 fatal ("invalid specification! Bug in cc");
4356 obstack_grow (&obstack, input_basename, basename_length);
4361 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4366 delete_this_arg = 2;
4369 /* Dump out the directories specified with LIBRARY_PATH,
4370 followed by the absolute directories
4371 that we search for startfiles. */
4374 struct prefix_list *pl = startfile_prefixes.plist;
4375 size_t bufsize = 100;
4376 char *buffer = (char *) xmalloc (bufsize);
4379 for (; pl; pl = pl->next)
4381 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4382 /* Used on systems which record the specified -L dirs
4383 and use them to search for dynamic linking. */
4384 /* Relative directories always come from -B,
4385 and it is better not to use them for searching
4386 at run time. In particular, stage1 loses. */
4387 if (!IS_ABSOLUTE_PATHNAME (pl->prefix))
4390 /* Try subdirectory if there is one. */
4391 if (multilib_dir != NULL)
4395 if (strlen (pl->prefix) + strlen (machine_suffix)
4397 bufsize = (strlen (pl->prefix)
4398 + strlen (machine_suffix)) * 2 + 1;
4399 buffer = (char *) xrealloc (buffer, bufsize);
4400 strcpy (buffer, pl->prefix);
4401 strcat (buffer, machine_suffix);
4402 if (is_directory (buffer, multilib_dir, 1))
4404 do_spec_1 ("-L", 0, NULL);
4405 #ifdef SPACE_AFTER_L_OPTION
4406 do_spec_1 (" ", 0, NULL);
4408 do_spec_1 (buffer, 1, NULL);
4409 do_spec_1 (multilib_dir, 1, NULL);
4410 /* Make this a separate argument. */
4411 do_spec_1 (" ", 0, NULL);
4414 if (!pl->require_machine_suffix)
4416 if (is_directory (pl->prefix, multilib_dir, 1))
4418 do_spec_1 ("-L", 0, NULL);
4419 #ifdef SPACE_AFTER_L_OPTION
4420 do_spec_1 (" ", 0, NULL);
4422 do_spec_1 (pl->prefix, 1, NULL);
4423 do_spec_1 (multilib_dir, 1, NULL);
4424 /* Make this a separate argument. */
4425 do_spec_1 (" ", 0, NULL);
4431 if (is_directory (pl->prefix, machine_suffix, 1))
4433 do_spec_1 ("-L", 0, NULL);
4434 #ifdef SPACE_AFTER_L_OPTION
4435 do_spec_1 (" ", 0, NULL);
4437 do_spec_1 (pl->prefix, 1, NULL);
4438 /* Remove slash from machine_suffix. */
4439 if (strlen (machine_suffix) >= bufsize)
4440 bufsize = strlen (machine_suffix) * 2 + 1;
4441 buffer = (char *) xrealloc (buffer, bufsize);
4442 strcpy (buffer, machine_suffix);
4443 idx = strlen (buffer);
4444 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4445 buffer[idx - 1] = 0;
4446 do_spec_1 (buffer, 1, NULL);
4447 /* Make this a separate argument. */
4448 do_spec_1 (" ", 0, NULL);
4451 if (!pl->require_machine_suffix)
4453 if (is_directory (pl->prefix, "", 1))
4455 do_spec_1 ("-L", 0, NULL);
4456 #ifdef SPACE_AFTER_L_OPTION
4457 do_spec_1 (" ", 0, NULL);
4459 /* Remove slash from pl->prefix. */
4460 if (strlen (pl->prefix) >= bufsize)
4461 bufsize = strlen (pl->prefix) * 2 + 1;
4462 buffer = (char *) xrealloc (buffer, bufsize);
4463 strcpy (buffer, pl->prefix);
4464 idx = strlen (buffer);
4465 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4466 buffer[idx - 1] = 0;
4467 do_spec_1 (buffer, 1, NULL);
4468 /* Make this a separate argument. */
4469 do_spec_1 (" ", 0, NULL);
4478 /* %efoo means report an error with `foo' as error message
4479 and don't execute any more commands for this file. */
4483 while (*p != 0 && *p != '\n')
4485 buf = (char *) alloca (p - q + 1);
4486 strncpy (buf, q, p - q);
4493 /* %nfoo means report an notice with `foo' on stderr. */
4497 while (*p != 0 && *p != '\n')
4499 buf = (char *) alloca (p - q + 1);
4500 strncpy (buf, q, p - q);
4502 notice ("%s\n", buf);
4512 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is defined,
4513 and it is not a directory, and it is writable, use it.
4514 Otherwise, fall through and treat this like any other
4517 if ((!save_temps_flag)
4518 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4519 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4521 obstack_grow (&obstack, HOST_BIT_BUCKET,
4522 strlen (HOST_BIT_BUCKET));
4523 delete_this_arg = 0;
4532 struct temp_name *t;
4534 const char *suffix = p;
4535 char *saved_suffix = NULL;
4537 while (*p == '.' || ISALPHA ((unsigned char) *p))
4539 suffix_length = p - suffix;
4540 if (p[0] == '%' && p[1] == 'O')
4543 /* We don't support extra suffix characters after %O. */
4544 if (*p == '.' || ISALPHA ((unsigned char) *p))
4546 if (suffix_length == 0)
4547 suffix = TARGET_OBJECT_SUFFIX;
4551 = (char *) xmalloc (suffix_length
4552 + strlen (TARGET_OBJECT_SUFFIX));
4553 strncpy (saved_suffix, suffix, suffix_length);
4554 strcpy (saved_suffix + suffix_length,
4555 TARGET_OBJECT_SUFFIX);
4557 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4560 /* If the input_filename has the same suffix specified
4561 for the %g, %u, or %U, and -save-temps is specified,
4562 we could end up using that file as an intermediate
4563 thus clobbering the user's source file (.e.g.,
4564 gcc -save-temps foo.s would clobber foo.s with the
4565 output of cpp0). So check for this condition and
4566 generate a temp file as the intermediate. */
4568 if (save_temps_flag)
4570 temp_filename_length = basename_length + suffix_length;
4571 temp_filename = alloca (temp_filename_length + 1);
4572 strncpy ((char *) temp_filename, input_basename, basename_length);
4573 strncpy ((char *) temp_filename + basename_length, suffix,
4575 *((char *) temp_filename + temp_filename_length) = '\0';
4576 if (strcmp (temp_filename, input_filename) != 0)
4578 struct stat st_temp;
4580 /* Note, set_input() resets input_stat_set to 0. */
4581 if (input_stat_set == 0)
4583 input_stat_set = stat (input_filename, &input_stat);
4584 if (input_stat_set >= 0)
4588 /* If we have the stat for the input_filename
4589 and we can do the stat for the temp_filename
4590 then the they could still refer to the same
4591 file if st_dev/st_ino's are the same. */
4593 if (input_stat_set != 1
4594 || stat (temp_filename, &st_temp) < 0
4595 || input_stat.st_dev != st_temp.st_dev
4596 || input_stat.st_ino != st_temp.st_ino)
4598 temp_filename = save_string (temp_filename,
4599 temp_filename_length + 1);
4600 obstack_grow (&obstack, temp_filename,
4601 temp_filename_length);
4608 /* See if we already have an association of %g/%u/%U and
4610 for (t = temp_names; t; t = t->next)
4611 if (t->length == suffix_length
4612 && strncmp (t->suffix, suffix, suffix_length) == 0
4613 && t->unique == (c != 'g'))
4616 /* Make a new association if needed. %u and %j
4618 if (t == 0 || c == 'u' || c == 'j')
4622 t = (struct temp_name *) xmalloc (sizeof (struct temp_name));
4623 t->next = temp_names;
4626 t->length = suffix_length;
4629 t->suffix = saved_suffix;
4630 saved_suffix = NULL;
4633 t->suffix = save_string (suffix, suffix_length);
4634 t->unique = (c != 'g');
4635 temp_filename = make_temp_file (t->suffix);
4636 temp_filename_length = strlen (temp_filename);
4637 t->filename = temp_filename;
4638 t->filename_length = temp_filename_length;
4642 free (saved_suffix);
4644 obstack_grow (&obstack, t->filename, t->filename_length);
4645 delete_this_arg = 1;
4651 obstack_grow (&obstack, input_filename, input_filename_length);
4657 struct prefix_list *pl = include_prefixes.plist;
4659 if (gcc_exec_prefix)
4661 do_spec_1 ("-iprefix", 1, NULL);
4662 /* Make this a separate argument. */
4663 do_spec_1 (" ", 0, NULL);
4664 do_spec_1 (gcc_exec_prefix, 1, NULL);
4665 do_spec_1 (" ", 0, NULL);
4668 for (; pl; pl = pl->next)
4670 do_spec_1 ("-isystem", 1, NULL);
4671 /* Make this a separate argument. */
4672 do_spec_1 (" ", 0, NULL);
4673 do_spec_1 (pl->prefix, 1, NULL);
4674 do_spec_1 (" ", 0, NULL);
4681 int max = n_infiles;
4682 max += lang_specific_extra_outfiles;
4684 for (i = 0; i < max; i++)
4686 store_arg (outfiles[i], 0, 0);
4691 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4696 this_is_library_file = 1;
4700 this_is_output_file = 1;
4705 int cur_index = argbuf_index;
4706 /* Handle the {...} following the %W. */
4709 p = handle_braces (p + 1);
4712 /* If any args were output, mark the last one for deletion
4714 if (argbuf_index != cur_index)
4715 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
4719 /* %x{OPTION} records OPTION for %X to output. */
4725 /* Skip past the option value and make a copy. */
4730 string = save_string (p1 + 1, p - p1 - 2);
4732 /* See if we already recorded this option. */
4733 for (i = 0; i < n_linker_options; i++)
4734 if (! strcmp (string, linker_options[i]))
4740 /* This option is new; add it. */
4741 add_linker_option (string, strlen (string));
4745 /* Dump out the options accumulated previously using %x. */
4747 for (i = 0; i < n_linker_options; i++)
4749 do_spec_1 (linker_options[i], 1, NULL);
4750 /* Make each accumulated option a separate argument. */
4751 do_spec_1 (" ", 0, NULL);
4755 /* Dump out the options accumulated previously using -Wa,. */
4757 for (i = 0; i < n_assembler_options; i++)
4759 do_spec_1 (assembler_options[i], 1, NULL);
4760 /* Make each accumulated option a separate argument. */
4761 do_spec_1 (" ", 0, NULL);
4765 /* Dump out the options accumulated previously using -Wp,. */
4767 for (i = 0; i < n_preprocessor_options; i++)
4769 do_spec_1 (preprocessor_options[i], 1, NULL);
4770 /* Make each accumulated option a separate argument. */
4771 do_spec_1 (" ", 0, NULL);
4775 /* Here are digits and numbers that just process
4776 a certain constant string as a spec. */
4779 value = do_spec_1 (cc1_spec, 0, NULL);
4785 value = do_spec_1 (cc1plus_spec, 0, NULL);
4791 value = do_spec_1 (asm_spec, 0, NULL);
4797 value = do_spec_1 (asm_final_spec, 0, NULL);
4804 const char *const spec
4805 = (input_file_compiler->cpp_spec
4806 ? input_file_compiler->cpp_spec
4808 value = do_spec_1 (spec, 0, NULL);
4815 value = do_spec_1 (endfile_spec, 0, NULL);
4821 value = do_spec_1 (link_spec, 0, NULL);
4827 value = do_spec_1 (lib_spec, 0, NULL);
4833 value = do_spec_1 (libgcc_spec, 0, NULL);
4839 if (multilib_dir && strcmp (multilib_dir, ".") != 0)
4845 len = strlen (multilib_dir);
4846 obstack_blank (&obstack, len + 1);
4847 p = obstack_next_free (&obstack) - (len + 1);
4850 for (q = multilib_dir; *q ; ++q, ++p)
4851 *p = (IS_DIR_SEPARATOR (*q) ? '_' : *q);
4857 char *x = (char *) alloca (strlen (cpp_predefines) + 1);
4861 /* Copy all of the -D options in CPP_PREDEFINES into BUF. */
4865 if (! strncmp (y, "-D", 2))
4866 /* Copy the whole option. */
4867 while (*y && *y != ' ' && *y != '\t')
4869 else if (*y == ' ' || *y == '\t')
4870 /* Copy whitespace to the result. */
4872 /* Don't copy other options. */
4879 value = do_spec_1 (buf, 0, NULL);
4887 char *x = (char *) alloca (strlen (cpp_predefines) * 4 + 1);
4891 /* Copy all of CPP_PREDEFINES into BUF,
4892 but force them all into the reserved name space if they
4893 aren't already there. The reserved name space is all
4894 identifiers beginning with two underscores or with one
4895 underscore and a capital letter. We do the forcing by
4896 adding up to two underscores to the beginning and end
4897 of each symbol. e.g. mips, _mips, mips_, and _mips_ all
4902 if (! strncmp (y, "-D", 2))
4911 && ! ISUPPER ((unsigned char) *(y + 1))))
4913 /* Stick __ at front of macro name. */
4917 /* Arrange to stick __ at the end as well. */
4921 /* Copy the macro name. */
4922 while (*y && *y != '=' && *y != ' ' && *y != '\t')
4935 /* Copy the value given, if any. */
4936 while (*y && *y != ' ' && *y != '\t')
4939 else if (*y == ' ' || *y == '\t')
4940 /* Copy whitespace to the result. */
4942 /* Don't copy -A options */
4948 /* Copy all of CPP_PREDEFINES into BUF,
4949 but put __ after every -D. */
4953 if (! strncmp (y, "-D", 2))
4959 && ! ISUPPER ((unsigned char) *(y + 1))))
4961 /* Stick -D__ at front of macro name. */
4968 /* Copy the macro name. */
4969 while (*y && *y != '=' && *y != ' ' && *y != '\t')
4972 /* Copy the value given, if any. */
4973 while (*y && *y != ' ' && *y != '\t')
4978 /* Do not copy this macro - we have just done it before */
4979 while (*y && *y != ' ' && *y != '\t')
4983 else if (*y == ' ' || *y == '\t')
4984 /* Copy whitespace to the result. */
4986 /* Don't copy -A options. */
4992 /* Copy all of the -A options in CPP_PREDEFINES into BUF. */
4996 if (! strncmp (y, "-A", 2))
4997 /* Copy the whole option. */
4998 while (*y && *y != ' ' && *y != '\t')
5000 else if (*y == ' ' || *y == '\t')
5001 /* Copy whitespace to the result. */
5003 /* Don't copy other options. */
5010 value = do_spec_1 (buf, 0, NULL);
5017 value = do_spec_1 (startfile_spec, 0, NULL);
5022 /* Here we define characters other than letters and digits. */
5025 p = handle_braces (p);
5031 obstack_1grow (&obstack, '%');
5038 while (p[len] && p[len] != ' ' && p[len] != '%')
5040 suffix_subst = save_string (p - 1, len + 1);
5046 if (soft_matched_part)
5048 do_spec_1 (soft_matched_part, 1, NULL);
5049 do_spec_1 (" ", 0, NULL);
5052 /* Catch the case where a spec string contains something like
5053 '%{foo:%*}'. ie there is no * in the pattern on the left
5054 hand side of the :. */
5055 error ("spec failure: '%%*' has not been initialized by pattern match");
5058 /* Process a string found as the value of a spec given by name.
5059 This feature allows individual machine descriptions
5060 to add and use their own specs.
5061 %[...] modifies -D options the way %P does;
5062 %(...) uses the spec unmodified. */
5064 error ("warning: use of obsolete %%[ operator in specs");
5067 const char *name = p;
5068 struct spec_list *sl;
5071 /* The string after the S/P is the name of a spec that is to be
5073 while (*p && *p != ')' && *p != ']')
5076 /* See if it's in the list. */
5077 for (len = p - name, sl = specs; sl; sl = sl->next)
5078 if (sl->name_len == len && !strncmp (sl->name, name, len))
5080 name = *(sl->ptr_spec);
5082 notice ("Processing spec %c%s%c, which is '%s'\n",
5083 c, sl->name, (c == '(') ? ')' : ']', name);
5092 value = do_spec_1 (name, 0, NULL);
5098 char *x = (char *) alloca (strlen (name) * 2 + 1);
5100 const char *y = name;
5103 /* Copy all of NAME into BUF, but put __ after
5104 every -D and at the end of each arg. */
5107 if (! strncmp (y, "-D", 2))
5118 && (*y == ' ' || *y == '\t' || *y == '='
5119 || *y == '}' || *y == 0))
5132 value = do_spec_1 (buf, 0, NULL);
5138 /* Discard the closing paren or bracket. */
5146 int c1 = *p++; /* Select first or second version number. */
5147 const char *v = compiler_version;
5149 static const char zeroc = '0';
5151 /* The format of the version string is
5152 ([^0-9]*-)?[0-9]+[.][0-9]+([.][0-9]+)?([- ].*)? */
5154 /* Ignore leading non-digits. i.e. "foo-" in "foo-2.7.2". */
5155 while (! ISDIGIT (*v))
5157 if (v > compiler_version && v[-1] != '-')
5160 /* If desired, advance to second version number. */
5163 /* Set V after the first period. */
5164 while (ISDIGIT (*v))
5171 /* If desired, advance to third version number.
5172 But don't complain if it's not present */
5175 /* Set V after the second period. */
5176 while (ISDIGIT (*v))
5178 if ((*v != 0) && (*v != ' ') && (*v != '.') && (*v != '-'))
5184 /* Set Q at the next period or at the end. */
5186 while (ISDIGIT (*q))
5188 if (*q != 0 && q > v && *q != ' ' && *q != '.' && *q != '-')
5192 /* Put that part into the command. */
5193 obstack_grow (&obstack, v, q - v);
5195 /* Default to "0" */
5196 obstack_grow (&obstack, &zeroc, 1);
5202 if (input_from_pipe)
5203 do_spec_1 ("-", 0, NULL);
5207 error ("spec failure: unrecognized spec option '%c'", c);
5213 /* Backslash: treat next character as ordinary. */
5218 /* Ordinary character: put it into the current argument. */
5219 obstack_1grow (&obstack, c);
5223 /* End of string. */
5227 /* Return 0 if we call do_spec_1 and that returns -1. */
5233 const char *filter, *body = NULL, *endbody = NULL;
5235 int true_once = 0; /* If, in %{a|b:d}, at least one of a,b was seen. */
5238 int include_blanks = 1;
5239 int elide_switch = 0;
5244 /* A '^' after the open-brace means to not give blanks before args. */
5251 /* A `|' after the open-brace means,
5252 if the test fails, output a single minus sign rather than nothing.
5253 This is used in %{|!pipe:...}. */
5260 /* A `<' after the open-brace means that the switch should be
5261 removed from the command-line. */
5267 negate = suffix = 0;
5270 /* A `!' after the open-brace negates the condition:
5271 succeed if the specified switch is not present. */
5275 /* A `.' after the open-brace means test against the current suffix. */
5284 if (elide_switch && (negate || pipe_p || suffix))
5286 /* It doesn't make sense to mix elision with other flags. We
5287 could fatal() here, but the standard seems to be to abort. */
5293 while (*p != ':' && *p != '}' && *p != '|' && *p != '&')
5296 if (*p == '|' && (pipe_p || ordered))
5301 if (*p != '}' && *p != '&')
5317 fatal ("mismatched braces in specs");
5323 body = p, endbody = p + 1;
5328 int found = (input_suffix != 0
5329 && (long) strlen (input_suffix) == (long) (p - filter)
5330 && strncmp (input_suffix, filter, p - filter) == 0);
5336 && do_spec_1 (save_string (body, endbody-body-1), 0, NULL) < 0)
5339 else if (p[-1] == '*' && (p[0] == '}' || p[0] == '&'))
5341 /* Substitute all matching switches as separate args. */
5344 for (i = 0; i < n_switches; i++)
5345 if (!strncmp (switches[i].part1, filter, p - 1 - filter)
5346 && check_live_switch (i, p - 1 - filter))
5350 switches[i].live_cond = SWITCH_IGNORE;
5351 switches[i].validated = 1;
5354 ordered = 1, switches[i].ordering = 1;
5359 /* Test for presence of the specified switch. */
5363 /* If name specified ends in *, as in {x*:...},
5364 check for %* and handle that case. */
5365 if (p[-1] == '*' && !negate)
5368 const char *r = body;
5370 /* First see whether we have %*. */
5374 if (*r == '%' && r[1] == '*')
5378 /* If we do, handle that case. */
5381 /* Substitute all matching switches as separate args.
5382 But do this by substituting for %*
5383 in the text that follows the colon. */
5385 unsigned hard_match_len = p - filter - 1;
5386 char *string = save_string (body, endbody - body - 1);
5388 for (i = 0; i < n_switches; i++)
5389 if (!strncmp (switches[i].part1, filter, hard_match_len)
5390 && check_live_switch (i, -1))
5392 do_spec_1 (string, 0, &switches[i].part1[hard_match_len]);
5393 /* Pass any arguments this switch has. */
5394 give_switch (i, 1, 1);
5395 suffix_subst = NULL;
5398 /* We didn't match. Try again. */
5405 /* If name specified ends in *, as in {x*:...},
5406 check for presence of any switch name starting with x. */
5409 for (i = 0; i < n_switches; i++)
5411 unsigned hard_match_len = p - filter - 1;
5413 if (!strncmp (switches[i].part1, filter, hard_match_len)
5414 && check_live_switch (i, hard_match_len))
5421 /* Otherwise, check for presence of exact name specified. */
5424 for (i = 0; i < n_switches; i++)
5426 if (!strncmp (switches[i].part1, filter, p - filter)
5427 && switches[i].part1[p - filter] == 0
5428 && check_live_switch (i, -1))
5436 /* If it is as desired (present for %{s...}, absent for %{!s...})
5437 then substitute either the switch or the specified
5438 conditional text. */
5439 if (present != negate)
5443 switches[i].live_cond = SWITCH_IGNORE;
5444 switches[i].validated = 1;
5446 else if (ordered || *p == '&')
5447 ordered = 1, switches[i].ordering = 1;
5449 give_switch (i, 0, include_blanks);
5451 /* Even if many alternatives are matched, only output once. */
5456 /* Here if a %{|...} conditional fails: output a minus sign,
5457 which means "standard output" or "standard input". */
5458 do_spec_1 ("-", 0, NULL);
5463 /* We didn't match; try again. */
5470 goto next_ampersand;
5476 /* Doing this set of switches later preserves their command-line
5477 ordering. This is needed for e.g. -U, -D and -A. */
5478 for (i = 0; i < n_switches; i++)
5479 if (switches[i].ordering == 1)
5481 switches[i].ordering = 0;
5482 give_switch (i, 0, include_blanks);
5485 /* Process the spec just once, regardless of match count. */
5488 if (do_spec_1 (save_string (body, endbody - body - 1),
5496 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5497 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5498 spec, or -1 if either exact match or %* is used.
5500 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5501 whose value does not begin with "no-" is obsoleted by the same value
5502 with the "no-", similarly for a switch with the "no-" prefix. */
5505 check_live_switch (switchnum, prefix_length)
5509 const char *name = switches[switchnum].part1;
5512 /* In the common case of {<at-most-one-letter>*}, a negating
5513 switch would always match, so ignore that case. We will just
5514 send the conflicting switches to the compiler phase. */
5515 if (prefix_length >= 0 && prefix_length <= 1)
5518 /* If we already processed this switch and determined if it was
5519 live or not, return our past determination. */
5520 if (switches[switchnum].live_cond != 0)
5521 return switches[switchnum].live_cond > 0;
5523 /* Now search for duplicate in a manner that depends on the name. */
5527 for (i = switchnum + 1; i < n_switches; i++)
5528 if (switches[i].part1[0] == 'O')
5530 switches[switchnum].validated = 1;
5531 switches[switchnum].live_cond = SWITCH_FALSE;
5536 case 'W': case 'f': case 'm':
5537 if (! strncmp (name + 1, "no-", 3))
5539 /* We have Xno-YYY, search for XYYY. */
5540 for (i = switchnum + 1; i < n_switches; i++)
5541 if (switches[i].part1[0] == name[0]
5542 && ! strcmp (&switches[i].part1[1], &name[4]))
5544 switches[switchnum].validated = 1;
5545 switches[switchnum].live_cond = SWITCH_FALSE;
5551 /* We have XYYY, search for Xno-YYY. */
5552 for (i = switchnum + 1; i < n_switches; i++)
5553 if (switches[i].part1[0] == name[0]
5554 && switches[i].part1[1] == 'n'
5555 && switches[i].part1[2] == 'o'
5556 && switches[i].part1[3] == '-'
5557 && !strcmp (&switches[i].part1[4], &name[1]))
5559 switches[switchnum].validated = 1;
5560 switches[switchnum].live_cond = SWITCH_FALSE;
5567 /* Otherwise the switch is live. */
5568 switches[switchnum].live_cond = SWITCH_LIVE;
5572 /* Pass a switch to the current accumulating command
5573 in the same form that we received it.
5574 SWITCHNUM identifies the switch; it is an index into
5575 the vector of switches gcc received, which is `switches'.
5576 This cannot fail since it never finishes a command line.
5578 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument.
5580 If INCLUDE_BLANKS is nonzero, then we include blanks before each argument
5584 give_switch (switchnum, omit_first_word, include_blanks)
5586 int omit_first_word;
5589 if (switches[switchnum].live_cond == SWITCH_IGNORE)
5592 if (!omit_first_word)
5594 do_spec_1 ("-", 0, NULL);
5595 do_spec_1 (switches[switchnum].part1, 1, NULL);
5598 if (switches[switchnum].args != 0)
5601 for (p = switches[switchnum].args; *p; p++)
5603 const char *arg = *p;
5606 do_spec_1 (" ", 0, NULL);
5609 unsigned length = strlen (arg);
5612 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5613 if (arg[length] == '.')
5615 ((char *)arg)[length] = 0;
5619 do_spec_1 (arg, 1, NULL);
5621 ((char *)arg)[length] = '.';
5622 do_spec_1 (suffix_subst, 1, NULL);
5625 do_spec_1 (arg, 1, NULL);
5629 do_spec_1 (" ", 0, NULL);
5630 switches[switchnum].validated = 1;
5633 /* Search for a file named NAME trying various prefixes including the
5634 user's -B prefix and some standard ones.
5635 Return the absolute file name found. If nothing is found, return NAME. */
5643 /* Try multilib_dir if it is defined. */
5644 if (multilib_dir != NULL)
5646 const char *const try = ACONCAT ((multilib_dir, dir_separator_str, name, NULL));
5648 newname = find_a_file (&startfile_prefixes, try, R_OK);
5650 /* If we don't find it in the multi library dir, then fall
5651 through and look for it in the normal places. */
5652 if (newname != NULL)
5656 newname = find_a_file (&startfile_prefixes, name, R_OK);
5657 return newname ? newname : name;
5660 /* Determine whether a directory exists. If LINKER, return 0 for
5661 certain fixed names not needed by the linker. If not LINKER, it is
5662 only important to return 0 if the host machine has a small ARG_MAX
5666 is_directory (path1, path2, linker)
5671 int len1 = strlen (path1);
5672 int len2 = strlen (path2);
5673 char *path = (char *) alloca (3 + len1 + len2);
5677 #ifndef SMALL_ARG_MAX
5682 /* Construct the path from the two parts. Ensure the string ends with "/.".
5683 The resulting path will be a directory even if the given path is a
5685 memcpy (path, path1, len1);
5686 memcpy (path + len1, path2, len2);
5687 cp = path + len1 + len2;
5688 if (!IS_DIR_SEPARATOR (cp[-1]))
5689 *cp++ = DIR_SEPARATOR;
5693 /* Exclude directories that the linker is known to search. */
5696 && strcmp (path, concat (dir_separator_str, "lib",
5697 dir_separator_str, ".", NULL)) == 0)
5699 && strcmp (path, concat (dir_separator_str, "usr",
5700 dir_separator_str, "lib",
5701 dir_separator_str, ".", NULL)) == 0)))
5704 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5707 /* Set up the various global variables to indicate that we're processing
5708 the input file named FILENAME. */
5711 set_input (filename)
5712 const char *filename;
5716 input_filename = filename;
5717 input_filename_length = strlen (input_filename);
5719 input_basename = input_filename;
5720 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
5721 /* Skip drive name so 'x:foo' is handled properly. */
5722 if (input_basename[1] == ':')
5723 input_basename += 2;
5725 for (p = input_basename; *p; p++)
5726 if (IS_DIR_SEPARATOR (*p))
5727 input_basename = p + 1;
5729 /* Find a suffix starting with the last period,
5730 and set basename_length to exclude that suffix. */
5731 basename_length = strlen (input_basename);
5732 suffixed_basename_length = basename_length;
5733 p = input_basename + basename_length;
5734 while (p != input_basename && *p != '.')
5736 if (*p == '.' && p != input_basename)
5738 basename_length = p - input_basename;
5739 input_suffix = p + 1;
5744 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5745 we will need to do a stat on the input_filename. The
5746 INPUT_STAT_SET signals that the stat is needed. */
5750 /* On fatal signals, delete all the temporary files. */
5753 fatal_error (signum)
5756 signal (signum, SIG_DFL);
5757 delete_failure_queue ();
5758 delete_temp_files ();
5759 /* Get the same signal again, this time not handled,
5760 so its normal effect occurs. */
5761 kill (getpid (), signum);
5764 extern int main PARAMS ((int, const char *const *));
5769 const char *const *argv;
5773 int linker_was_run = 0;
5774 char *explicit_link_files;
5777 struct user_specs *uptr;
5779 p = argv[0] + strlen (argv[0]);
5780 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
5784 xmalloc_set_program_name (programname);
5786 #ifdef GCC_DRIVER_HOST_INITIALIZATION
5787 /* Perform host dependent initialization when needed. */
5788 GCC_DRIVER_HOST_INITIALIZATION;
5791 gcc_init_libintl ();
5793 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
5794 signal (SIGINT, fatal_error);
5796 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
5797 signal (SIGHUP, fatal_error);
5799 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
5800 signal (SIGTERM, fatal_error);
5802 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
5803 signal (SIGPIPE, fatal_error);
5806 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
5807 receive the signal. A different setting is inheritable */
5808 signal (SIGCHLD, SIG_DFL);
5812 argbuf = (const char **) xmalloc (argbuf_length * sizeof (const char *));
5814 obstack_init (&obstack);
5816 /* Build multilib_select, et. al from the separate lines that make up each
5817 multilib selection. */
5819 const char *const *q = multilib_raw;
5822 obstack_init (&multilib_obstack);
5823 while ((p = *q++) != (char *) 0)
5824 obstack_grow (&multilib_obstack, p, strlen (p));
5826 obstack_1grow (&multilib_obstack, 0);
5827 multilib_select = obstack_finish (&multilib_obstack);
5829 q = multilib_matches_raw;
5830 while ((p = *q++) != (char *) 0)
5831 obstack_grow (&multilib_obstack, p, strlen (p));
5833 obstack_1grow (&multilib_obstack, 0);
5834 multilib_matches = obstack_finish (&multilib_obstack);
5836 q = multilib_exclusions_raw;
5837 while ((p = *q++) != (char *) 0)
5838 obstack_grow (&multilib_obstack, p, strlen (p));
5840 obstack_1grow (&multilib_obstack, 0);
5841 multilib_exclusions = obstack_finish (&multilib_obstack);
5844 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
5847 obstack_1grow (&multilib_obstack, ' ');
5848 obstack_grow (&multilib_obstack,
5849 multilib_defaults_raw[i],
5850 strlen (multilib_defaults_raw[i]));
5854 obstack_1grow (&multilib_obstack, 0);
5855 multilib_defaults = obstack_finish (&multilib_obstack);
5858 /* Set up to remember the pathname of gcc and any options
5859 needed for collect. We use argv[0] instead of programname because
5860 we need the complete pathname. */
5861 obstack_init (&collect_obstack);
5862 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
5863 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
5864 putenv (obstack_finish (&collect_obstack));
5866 #ifdef INIT_ENVIRONMENT
5867 /* Set up any other necessary machine specific environment variables. */
5868 putenv (INIT_ENVIRONMENT);
5871 /* Make a table of what switches there are (switches, n_switches).
5872 Make a table of specified input files (infiles, n_infiles).
5873 Decode switches that are handled locally. */
5875 process_command (argc, argv);
5877 /* Initialize the vector of specs to just the default.
5878 This means one element containing 0s, as a terminator. */
5880 compilers = (struct compiler *) xmalloc (sizeof default_compilers);
5881 memcpy ((char *) compilers, (char *) default_compilers,
5882 sizeof default_compilers);
5883 n_compilers = n_default_compilers;
5885 /* Read specs from a file if there is one. */
5887 machine_suffix = concat (spec_machine, dir_separator_str,
5888 spec_version, dir_separator_str, NULL);
5889 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
5891 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK);
5892 /* Read the specs file unless it is a default one. */
5893 if (specs_file != 0 && strcmp (specs_file, "specs"))
5894 read_specs (specs_file, TRUE);
5898 /* We need to check standard_exec_prefix/just_machine_suffix/specs
5899 for any override of as, ld and libraries. */
5900 specs_file = (char *) alloca (strlen (standard_exec_prefix)
5901 + strlen (just_machine_suffix)
5902 + sizeof ("specs"));
5904 strcpy (specs_file, standard_exec_prefix);
5905 strcat (specs_file, just_machine_suffix);
5906 strcat (specs_file, "specs");
5907 if (access (specs_file, R_OK) == 0)
5908 read_specs (specs_file, TRUE);
5910 /* If not cross-compiling, look for startfiles in the standard places.
5911 Similarly, don't add the standard prefixes if startfile handling
5912 will be under control of startfile_prefix_spec. */
5913 if (*cross_compile == '0' && *startfile_prefix_spec == 0)
5915 if (*md_exec_prefix)
5917 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
5918 PREFIX_PRIORITY_LAST, 0, NULL);
5919 add_prefix (&startfile_prefixes, md_exec_prefix, "GCC",
5920 PREFIX_PRIORITY_LAST, 0, NULL);
5923 if (*md_startfile_prefix)
5924 add_prefix (&startfile_prefixes, md_startfile_prefix, "GCC",
5925 PREFIX_PRIORITY_LAST, 0, NULL);
5927 if (*md_startfile_prefix_1)
5928 add_prefix (&startfile_prefixes, md_startfile_prefix_1, "GCC",
5929 PREFIX_PRIORITY_LAST, 0, NULL);
5931 /* If standard_startfile_prefix is relative, base it on
5932 standard_exec_prefix. This lets us move the installed tree
5933 as a unit. If GCC_EXEC_PREFIX is defined, base
5934 standard_startfile_prefix on that as well. */
5935 if (IS_ABSOLUTE_PATHNAME (standard_startfile_prefix))
5936 add_prefix (&startfile_prefixes, standard_startfile_prefix, "BINUTILS",
5937 PREFIX_PRIORITY_LAST, 0, NULL);
5940 if (gcc_exec_prefix)
5941 add_prefix (&startfile_prefixes,
5942 concat (gcc_exec_prefix, machine_suffix,
5943 standard_startfile_prefix, NULL),
5944 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
5945 add_prefix (&startfile_prefixes,
5946 concat (standard_exec_prefix,
5948 standard_startfile_prefix, NULL),
5949 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
5952 add_prefix (&startfile_prefixes, standard_startfile_prefix_1,
5953 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
5954 add_prefix (&startfile_prefixes, standard_startfile_prefix_2,
5955 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
5956 #if 0 /* Can cause surprises, and one can use -B./ instead. */
5957 add_prefix (&startfile_prefixes, "./", NULL,
5958 PREFIX_PRIORITY_LAST, 1, NULL);
5963 if (!IS_ABSOLUTE_PATHNAME (standard_startfile_prefix)
5965 add_prefix (&startfile_prefixes,
5966 concat (gcc_exec_prefix, machine_suffix,
5967 standard_startfile_prefix, NULL),
5968 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
5971 if (*startfile_prefix_spec != 0
5972 && do_spec_2 (startfile_prefix_spec) == 0
5973 && do_spec_1 (" ", 0, NULL) == 0)
5976 for (ndx = 0; ndx < argbuf_index; ndx++)
5977 add_prefix (&startfile_prefixes, argbuf[ndx], "BINUTILS",
5978 PREFIX_PRIORITY_LAST, 0, NULL);
5981 /* Process any user specified specs in the order given on the command
5983 for (uptr = user_specs_head; uptr; uptr = uptr->next)
5985 char *filename = find_a_file (&startfile_prefixes, uptr->filename, R_OK);
5986 read_specs (filename ? filename : uptr->filename, FALSE);
5989 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
5990 if (gcc_exec_prefix)
5991 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
5992 spec_version, dir_separator_str, NULL);
5994 /* Now we have the specs.
5995 Set the `valid' bits for switches that match anything in any spec. */
5997 validate_all_switches ();
5999 /* Now that we have the switches and the specs, set
6000 the subdirectory based on the options. */
6001 set_multilib_dir ();
6003 /* Warn about any switches that no pass was interested in. */
6005 for (i = 0; (int) i < n_switches; i++)
6006 if (! switches[i].validated)
6007 error ("unrecognized option `-%s'", switches[i].part1);
6009 /* Obey some of the options. */
6011 if (print_search_dirs)
6013 printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix);
6014 printf (_("programs: %s\n"), build_search_list (&exec_prefixes, "", 0));
6015 printf (_("libraries: %s\n"), build_search_list (&startfile_prefixes, "", 0));
6019 if (print_file_name)
6021 printf ("%s\n", find_file (print_file_name));
6025 if (print_prog_name)
6027 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK);
6028 printf ("%s\n", (newname ? newname : print_prog_name));
6032 if (print_multi_lib)
6034 print_multilib_info ();
6038 if (print_multi_directory)
6040 if (multilib_dir == NULL)
6043 printf ("%s\n", multilib_dir);
6047 if (target_help_flag)
6049 /* Print if any target specific options. */
6051 /* We do not exit here. Instead we have created a fake input file
6052 called 'target-dummy' which needs to be compiled, and we pass this
6053 on to the various sub-processes, along with the --target-help
6057 if (print_help_list)
6063 printf (_("\nFor bug reporting instructions, please see:\n"));
6064 printf ("%s.\n", GCCBUGURL);
6069 /* We do not exit here. Instead we have created a fake input file
6070 called 'help-dummy' which needs to be compiled, and we pass this
6071 on the various sub-processes, along with the --help switch. */
6079 notice ("Configured with: %s\n", configuration_arguments);
6081 #ifdef THREAD_MODEL_SPEC
6082 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6083 but there's no point in doing all this processing just to get
6084 thread_model back. */
6085 obstack_init (&obstack);
6086 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6087 obstack_1grow (&obstack, '\0');
6088 thrmod = obstack_finish (&obstack);
6090 thrmod = thread_model;
6093 notice ("Thread model: %s\n", thrmod);
6095 /* compiler_version is truncated at the first space when initialized
6096 from version string, so truncate version_string at the first space
6097 before comparing. */
6098 for (n = 0; version_string[n]; n++)
6099 if (version_string[n] == ' ')
6102 if (! strncmp (version_string, compiler_version, n)
6103 && compiler_version[n] == 0)
6104 notice ("gcc version %s\n", version_string);
6106 notice ("gcc driver version %s executing gcc version %s\n",
6107 version_string, compiler_version);
6113 if (n_infiles == added_libraries)
6114 fatal ("no input files");
6116 /* Make a place to record the compiler output file names
6117 that correspond to the input files. */
6120 i += lang_specific_extra_outfiles;
6121 outfiles = (const char **) xcalloc (i, sizeof (char *));
6123 /* Record which files were specified explicitly as link input. */
6125 explicit_link_files = xcalloc (1, n_infiles);
6127 for (i = 0; (int) i < n_infiles; i++)
6129 int this_file_error = 0;
6131 /* Tell do_spec what to substitute for %i. */
6133 input_file_number = i;
6134 set_input (infiles[i].name);
6136 /* Use the same thing in %o, unless cp->spec says otherwise. */
6138 outfiles[i] = input_filename;
6140 /* Figure out which compiler from the file's suffix. */
6143 = lookup_compiler (infiles[i].name, input_filename_length,
6144 infiles[i].language);
6146 if (input_file_compiler)
6148 /* Ok, we found an applicable compiler. Run its spec. */
6150 if (input_file_compiler->spec[0] == '#')
6152 error ("%s: %s compiler not installed on this system",
6153 input_filename, &input_file_compiler->spec[1]);
6154 this_file_error = 1;
6158 value = do_spec (input_file_compiler->spec);
6160 this_file_error = 1;
6164 /* If this file's name does not contain a recognized suffix,
6165 record it as explicit linker input. */
6168 explicit_link_files[i] = 1;
6170 /* Clear the delete-on-failure queue, deleting the files in it
6171 if this compilation failed. */
6173 if (this_file_error)
6175 delete_failure_queue ();
6178 /* If this compilation succeeded, don't delete those files later. */
6179 clear_failure_queue ();
6182 /* Reset the output file name to the first input file name, for use
6183 with %b in LINK_SPEC on a target that prefers not to emit a.out
6186 set_input (infiles[0].name);
6188 if (error_count == 0)
6190 /* Make sure INPUT_FILE_NUMBER points to first available open
6192 input_file_number = n_infiles;
6193 if (lang_specific_pre_link ())
6197 /* Run ld to link all the compiler output files. */
6199 if (error_count == 0)
6201 int tmp = execution_count;
6203 /* We'll use ld if we can't find collect2. */
6204 if (! strcmp (linker_name_spec, "collect2"))
6206 char *s = find_a_file (&exec_prefixes, "collect2", X_OK);
6208 linker_name_spec = "ld";
6210 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6212 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH");
6213 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV);
6215 value = do_spec (link_command_spec);
6218 linker_was_run = (tmp != execution_count);
6221 /* If options said don't run linker,
6222 complain about input files to be given to the linker. */
6224 if (! linker_was_run && error_count == 0)
6225 for (i = 0; (int) i < n_infiles; i++)
6226 if (explicit_link_files[i])
6227 error ("%s: linker input file unused because linking not done",
6230 /* Delete some or all of the temporary files we made. */
6233 delete_failure_queue ();
6234 delete_temp_files ();
6236 if (print_help_list)
6238 printf (("\nFor bug reporting instructions, please see:\n"));
6239 printf ("%s\n", GCCBUGURL);
6242 return (signal_count != 0 ? 2
6243 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
6247 /* Find the proper compilation spec for the file name NAME,
6248 whose length is LENGTH. LANGUAGE is the specified language,
6249 or 0 if this file is to be passed to the linker. */
6251 static struct compiler *
6252 lookup_compiler (name, length, language)
6255 const char *language;
6257 struct compiler *cp;
6259 /* If this was specified by the user to be a linker input, indicate that. */
6260 if (language != 0 && language[0] == '*')
6263 /* Otherwise, look for the language, if one is spec'd. */
6266 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6267 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6270 error ("language %s not recognized", language);
6274 /* Look for a suffix. */
6275 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6277 if (/* The suffix `-' matches only the file name `-'. */
6278 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6279 || (strlen (cp->suffix) < length
6280 /* See if the suffix matches the end of NAME. */
6281 && !strcmp (cp->suffix,
6282 name + length - strlen (cp->suffix))
6287 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6288 /* look again, but case-insensitively this time. */
6290 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6292 if (/* The suffix `-' matches only the file name `-'. */
6293 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6294 || (strlen (cp->suffix) < length
6295 /* See if the suffix matches the end of NAME. */
6296 && ((!strcmp (cp->suffix,
6297 name + length - strlen (cp->suffix))
6298 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6299 && !strcasecmp (cp->suffix,
6300 name + length - strlen (cp->suffix)))
6306 if (cp >= compilers)
6308 if (cp->spec[0] != '@')
6309 /* A non-alias entry: return it. */
6312 /* An alias entry maps a suffix to a language.
6313 Search for the language; pass 0 for NAME and LENGTH
6314 to avoid infinite recursion if language not found. */
6315 return lookup_compiler (NULL, 0, cp->spec + 1);
6321 save_string (s, len)
6325 char *result = xmalloc (len + 1);
6327 memcpy (result, s, len);
6333 pfatal_with_name (name)
6336 perror_with_name (name);
6337 delete_temp_files ();
6342 perror_with_name (name)
6345 error ("%s: %s", name, xstrerror (errno));
6349 pfatal_pexecute (errmsg_fmt, errmsg_arg)
6350 const char *errmsg_fmt;
6351 const char *errmsg_arg;
6355 int save_errno = errno;
6357 /* Space for trailing '\0' is in %s. */
6358 char *msg = xmalloc (strlen (errmsg_fmt) + strlen (errmsg_arg));
6359 sprintf (msg, errmsg_fmt, errmsg_arg);
6365 pfatal_with_name (errmsg_fmt);
6368 /* Output an error message and exit */
6373 fatal ("internal gcc abort");
6376 /* Output an error message and exit */
6379 fatal VPARAMS ((const char *msgid, ...))
6381 VA_OPEN (ap, msgid);
6382 VA_FIXEDARG (ap, const char *, msgid);
6384 fprintf (stderr, "%s: ", programname);
6385 vfprintf (stderr, _(msgid), ap);
6387 fprintf (stderr, "\n");
6388 delete_temp_files ();
6393 error VPARAMS ((const char *msgid, ...))
6395 VA_OPEN (ap, msgid);
6396 VA_FIXEDARG (ap, const char *, msgid);
6398 fprintf (stderr, "%s: ", programname);
6399 vfprintf (stderr, _(msgid), ap);
6402 fprintf (stderr, "\n");
6406 notice VPARAMS ((const char *msgid, ...))
6408 VA_OPEN (ap, msgid);
6409 VA_FIXEDARG (ap, const char *, msgid);
6411 vfprintf (stderr, _(msgid), ap);
6416 validate_all_switches ()
6418 struct compiler *comp;
6421 struct spec_list *spec;
6423 for (comp = compilers; comp->spec; comp++)
6427 if (c == '%' && (*p == '{' || (*p == 'W' && *++p == '{')))
6428 /* We have a switch spec. */
6429 validate_switches (p + 1);
6432 /* Look through the linked list of specs read from the specs file. */
6433 for (spec = specs; spec; spec = spec->next)
6435 p = *(spec->ptr_spec);
6437 if (c == '%' && (*p == '{' || (*p == 'W' && *++p == '{')))
6438 /* We have a switch spec. */
6439 validate_switches (p + 1);
6442 p = link_command_spec;
6444 if (c == '%' && (*p == '{' || (*p == 'W' && *++p == '{')))
6445 /* We have a switch spec. */
6446 validate_switches (p + 1);
6449 /* Look at the switch-name that comes after START
6450 and mark as valid all supplied switches that match it. */
6453 validate_switches (start)
6456 const char *p = start;
6473 while (*p != ':' && *p != '}' && *p != '|' && *p != '&')
6478 else if (p[-1] == '*')
6480 /* Mark all matching switches as valid. */
6481 for (i = 0; i < n_switches; i++)
6482 if (!strncmp (switches[i].part1, filter, p - filter - 1))
6483 switches[i].validated = 1;
6487 /* Mark an exact matching switch as valid. */
6488 for (i = 0; i < n_switches; i++)
6490 if (!strncmp (switches[i].part1, filter, p - filter)
6491 && switches[i].part1[p - filter] == 0)
6492 switches[i].validated = 1;
6496 if (*p++ == '|' || p[-1] == '&')
6500 /* Check whether a particular argument was used. The first time we
6501 canonicalize the switches to keep only the ones we care about. */
6511 const char *replace;
6516 static struct mswitchstr *mswitches;
6517 static int n_mswitches;
6522 struct mswitchstr *matches;
6526 /* Break multilib_matches into the component strings of string
6527 and replacement string. */
6528 for (q = multilib_matches; *q != '\0'; q++)
6533 (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
6535 q = multilib_matches;
6545 matches[i].len = q - matches[i].str;
6547 matches[i].replace = ++q;
6548 while (*q != ';' && *q != '\0')
6554 matches[i].rep_len = q - matches[i].replace;
6560 /* Now build a list of the replacement string for switches that we care
6561 about. Make sure we allocate at least one entry. This prevents
6562 xmalloc from calling fatal, and prevents us from re-executing this
6565 = (struct mswitchstr *) xmalloc ((sizeof (struct mswitchstr))
6566 * (n_switches ? n_switches : 1));
6567 for (i = 0; i < n_switches; i++)
6569 int xlen = strlen (switches[i].part1);
6570 for (j = 0; j < cnt; j++)
6571 if (xlen == matches[j].len
6572 && ! strncmp (switches[i].part1, matches[j].str, xlen))
6574 mswitches[n_mswitches].str = matches[j].replace;
6575 mswitches[n_mswitches].len = matches[j].rep_len;
6576 mswitches[n_mswitches].replace = (char *) 0;
6577 mswitches[n_mswitches].rep_len = 0;
6584 for (i = 0; i < n_mswitches; i++)
6585 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
6592 default_arg (p, len)
6596 const char *start, *end;
6598 for (start = multilib_defaults; *start != '\0'; start = end + 1)
6600 while (*start == ' ' || *start == '\t')
6606 for (end = start + 1; *end != ' ' && *end != '\t' && *end != '\0'; end++)
6609 if ((end - start) == len && strncmp (p, start, len) == 0)
6619 /* Work out the subdirectory to use based on the options. The format of
6620 multilib_select is a list of elements. Each element is a subdirectory
6621 name followed by a list of options followed by a semicolon. The format
6622 of multilib_exclusions is the same, but without the preceding
6623 directory. First gcc will check the exclusions, if none of the options
6624 beginning with an exclamation point are present, and all of the other
6625 options are present, then we will ignore this completely. Passing
6626 that, gcc will consider each multilib_select in turn using the same
6627 rules for matching the options. If a match is found, that subdirectory
6634 unsigned int this_path_len;
6635 const char *this_path, *this_arg;
6639 p = multilib_exclusions;
6642 /* Ignore newlines. */
6649 /* Check the arguments. */
6663 while (*p != ' ' && *p != ';')
6670 if (*this_arg != '!')
6678 ok = used_arg (this_arg, p - this_arg);
6692 p = multilib_select;
6695 /* Ignore newlines. */
6702 /* Get the initial path. */
6710 this_path_len = p - this_path;
6712 /* Check the arguments. */
6727 while (*p != ' ' && *p != ';')
6734 if (*this_arg != '!')
6742 /* If this is a default argument, we can just ignore it.
6743 This is true even if this_arg begins with '!'. Beginning
6744 with '!' does not mean that this argument is necessarily
6745 inappropriate for this library: it merely means that
6746 there is a more specific library which uses this
6747 argument. If this argument is a default, we need not
6748 consider that more specific library. */
6749 if (! default_arg (this_arg, p - this_arg))
6751 ok = used_arg (this_arg, p - this_arg);
6762 if (this_path_len != 1
6763 || this_path[0] != '.')
6765 char *new_multilib_dir = xmalloc (this_path_len + 1);
6766 strncpy (new_multilib_dir, this_path, this_path_len);
6767 new_multilib_dir[this_path_len] = '\0';
6768 multilib_dir = new_multilib_dir;
6777 /* Print out the multiple library subdirectory selection
6778 information. This prints out a series of lines. Each line looks
6779 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
6780 required. Only the desired options are printed out, the negative
6781 matches. The options are print without a leading dash. There are
6782 no spaces to make it easy to use the information in the shell.
6783 Each subdirectory is printed only once. This assumes the ordering
6784 generated by the genmultilib script. Also, we leave out ones that match
6788 print_multilib_info ()
6790 const char *p = multilib_select;
6791 const char *last_path = 0, *this_path;
6793 unsigned int last_path_len = 0;
6798 /* Ignore newlines. */
6805 /* Get the initial path. */
6814 /* Check for matches with the multilib_exclusions. We don't bother
6815 with the '!' in either list. If any of the exclusion rules match
6816 all of its options with the select rule, we skip it. */
6818 const char *e = multilib_exclusions;
6819 const char *this_arg;
6824 /* Ignore newlines. */
6831 /* Check the arguments. */
6848 while (*e != ' ' && *e != ';')
6859 int len = e - this_arg;
6866 while (*q != ' ' && *q != ';')
6873 if (! strncmp (arg, this_arg, (len < q - arg) ? q - arg : len) ||
6874 default_arg (this_arg, e - this_arg))
6904 /* If this is a duplicate, skip it. */
6905 skip = (last_path != 0 && (unsigned int) (p - this_path) == last_path_len
6906 && ! strncmp (last_path, this_path, last_path_len));
6908 last_path = this_path;
6909 last_path_len = p - this_path;
6912 /* If this directory requires any default arguments, we can skip
6913 it. We will already have printed a directory identical to
6914 this one which does not require that default argument. */
6932 while (*q != ' ' && *q != ';')
6940 && default_arg (arg, q - arg))
6955 for (p1 = last_path; p1 < p; p1++)
6974 use_arg = *p != '!';
6979 while (*p != ' ' && *p != ';')
6994 /* If there are extra options, print them now. */
6995 if (multilib_extra && *multilib_extra)
6997 int print_at = TRUE;
7000 for (q = multilib_extra; *q != '\0'; q++)