1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
22 This paragraph is here to try to keep Sun CC from dying.
23 The number of chars here seems crucial!!!! */
25 /* This program is the user interface to the C compiler and possibly to
26 other compilers. It is used because compilation is a complicated procedure
27 which involves running several programs and passing temporary files between
28 them, forwarding the users switches to those programs selectively,
29 and deleting the temporary files at the end.
31 CC recognizes how to compile each input file by suffixes in the file names.
32 Once it knows which kind of compilation to perform, the procedure for
33 compilation is specified by a string called a "spec". */
35 /* A Short Introduction to Adding a Command-Line Option.
37 Before adding a command-line option, consider if it is really
38 necessary. Each additional command-line option adds complexity and
39 is difficult to remove in subsequent versions.
41 In the following, consider adding the command-line argument
44 1. Each command-line option is specified in the specs file. The
45 notation is described below in the comment entitled "The Specs
48 2. In this file, add an entry to "option_map" equating the long
49 `--' argument version and any shorter, single letter version. Read
50 the comments in the declaration of "struct option_map" for an
51 explanation. Do not omit the first `-'.
53 3. Look in the "specs" file to determine which program or option
54 list should be given the argument, e.g., "cc1_options". Add the
55 appropriate syntax for the shorter option version to the
56 corresponding "const char *" entry in this file. Omit the first
57 `-' from the option. For example, use `-bar', rather than `--bar'.
59 4. If the argument takes an argument, e.g., `--baz argument1',
60 modify either DEFAULT_SWITCH_TAKES_ARG or
61 DEFAULT_WORD_SWITCH_TAKES_ARG in this file. Omit the first `-'
64 5. Document the option in this file's display_help(). If the
65 option is passed to a subprogram, modify its corresponding
66 function, e.g., cppinit.c:print_help() or toplev.c:display_help(),
69 6. Compile and test. Make sure that your new specs file is being
70 read. For example, use a debugger to investigate the value of
71 "specs_file" in main(). */
76 #if ! defined( SIGCHLD ) && defined( SIGCLD )
77 # define SIGCHLD SIGCLD
85 #ifdef HAVE_SYS_RESOURCE_H
86 #include <sys/resource.h>
88 #if defined (HAVE_DECL_GETRUSAGE) && !HAVE_DECL_GETRUSAGE
89 extern int getrusage PARAMS ((int, struct rusage *));
92 /* By default there is no special suffix for target executables. */
93 /* FIXME: when autoconf is fixed, remove the host check - dj */
94 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
95 #define HAVE_TARGET_EXECUTABLE_SUFFIX
97 #undef TARGET_EXECUTABLE_SUFFIX
98 #define TARGET_EXECUTABLE_SUFFIX ""
101 /* By default there is no special suffix for host executables. */
102 #ifdef HOST_EXECUTABLE_SUFFIX
103 #define HAVE_HOST_EXECUTABLE_SUFFIX
105 #define HOST_EXECUTABLE_SUFFIX ""
108 /* By default, the suffix for target object files is ".o". */
109 #ifdef TARGET_OBJECT_SUFFIX
110 #define HAVE_TARGET_OBJECT_SUFFIX
112 #define TARGET_OBJECT_SUFFIX ".o"
116 /* FIXME: the location independence code for VMS is hairier than this,
117 and hasn't been written. */
123 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
125 #define obstack_chunk_alloc xmalloc
126 #define obstack_chunk_free free
128 #ifndef GET_ENV_PATH_LIST
129 #define GET_ENV_PATH_LIST(VAR,NAME) do { (VAR) = getenv (NAME); } while (0)
132 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
133 #ifndef LIBRARY_PATH_ENV
134 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
138 #define kill(p,s) raise(s)
141 /* If a stage of compilation returns an exit status >= 1,
142 compilation of that file ceases. */
144 #define MIN_FATAL_STATUS 1
146 /* Flag set by cppspec.c to 1. */
149 /* Flag saying to pass the greatest exit code returned by a sub-process
150 to the calling program. */
151 static int pass_exit_codes;
153 /* Definition of string containing the arguments given to configure. */
154 #include "configargs.h"
156 /* Flag saying to print the directories gcc will search through looking for
157 programs, libraries, etc. */
159 static int print_search_dirs;
161 /* Flag saying to print the full filename of this file
162 as found through our usual search mechanism. */
164 static const char *print_file_name = NULL;
166 /* As print_file_name, but search for executable file. */
168 static const char *print_prog_name = NULL;
170 /* Flag saying to print the relative path we'd use to
171 find libgcc.a given the current compiler flags. */
173 static int print_multi_directory;
175 /* Flag saying to print the list of subdirectories and
176 compiler flags used to select them in a standard form. */
178 static int print_multi_lib;
180 /* Flag saying to print the command line options understood by gcc and its
183 static int print_help_list;
185 /* Flag indicating whether we should print the command and arguments */
187 static int verbose_flag;
189 /* Flag indicating whether we should ONLY print the command and
190 arguments (like verbose_flag) without executing the command.
191 Displayed arguments are quoted so that the generated command
192 line is suitable for execution. This is intended for use in
193 shell scripts to capture the driver-generated command line. */
194 static int verbose_only_flag;
196 /* Flag indicating to print target specific command line options. */
198 static int target_help_flag;
200 /* Flag indicating whether we should report subprocess execution times
201 (if this is supported by the system - see pexecute.c). */
203 static int report_times;
205 /* Nonzero means write "temp" files in source directory
206 and use the source file's name in them, and don't delete them. */
208 static int save_temps_flag;
210 /* The compiler version. */
212 static const char *compiler_version;
214 /* The target version specified with -V */
216 static const char *spec_version = DEFAULT_TARGET_VERSION;
218 /* The target machine specified with -b. */
220 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
222 /* Nonzero if cross-compiling.
223 When -b is used, the value comes from the `specs' file. */
226 static const char *cross_compile = "1";
228 static const char *cross_compile = "0";
231 #ifdef MODIFY_TARGET_NAME
233 /* Information on how to alter the target name based on a command-line
234 switch. The only case we support now is simply appending or deleting a
235 string to or from the end of the first part of the configuration name. */
237 static const struct modify_target
239 const char *const sw;
240 const enum add_del {ADD, DELETE} add_del;
241 const char *const str;
243 modify_target[] = MODIFY_TARGET_NAME;
246 /* The number of errors that have occurred; the link phase will not be
247 run if this is non-zero. */
248 static int error_count = 0;
250 /* Greatest exit code of sub-processes that has been encountered up to
252 static int greatest_status = 1;
254 /* This is the obstack which we use to allocate many strings. */
256 static struct obstack obstack;
258 /* This is the obstack to build an environment variable to pass to
259 collect2 that describes all of the relevant switches of what to
260 pass the compiler in building the list of pointers to constructors
263 static struct obstack collect_obstack;
265 /* These structs are used to collect resource usage information for
267 #ifdef HAVE_GETRUSAGE
268 static struct rusage rus, prus;
271 /* Forward declaration for prototypes. */
274 static void init_spec PARAMS ((void));
276 static char **split_directories PARAMS ((const char *, int *));
277 static void free_split_directories PARAMS ((char **));
278 static char *make_relative_prefix PARAMS ((const char *, const char *, const char *));
280 static void store_arg PARAMS ((const char *, int, int));
281 static char *load_specs PARAMS ((const char *));
282 static void read_specs PARAMS ((const char *, int));
283 static void set_spec PARAMS ((const char *, const char *));
284 static struct compiler *lookup_compiler PARAMS ((const char *, size_t, const char *));
285 static char *build_search_list PARAMS ((struct path_prefix *, const char *, int));
286 static void putenv_from_prefixes PARAMS ((struct path_prefix *, const char *));
287 static int access_check PARAMS ((const char *, int));
288 static char *find_a_file PARAMS ((struct path_prefix *, const char *, int));
289 static void add_prefix PARAMS ((struct path_prefix *, const char *,
290 const char *, int, int, int *));
291 static void translate_options PARAMS ((int *, const char *const **));
292 static char *skip_whitespace PARAMS ((char *));
293 static void delete_if_ordinary PARAMS ((const char *));
294 static void delete_temp_files PARAMS ((void));
295 static void delete_failure_queue PARAMS ((void));
296 static void clear_failure_queue PARAMS ((void));
297 static int check_live_switch PARAMS ((int, int));
298 static const char *handle_braces PARAMS ((const char *));
299 static char *save_string PARAMS ((const char *, int));
300 static void set_collect_gcc_options PARAMS ((void));
301 static int do_spec_1 PARAMS ((const char *, int, const char *));
302 static const char *find_file PARAMS ((const char *));
303 static int is_directory PARAMS ((const char *, const char *, int));
304 static void validate_switches PARAMS ((const char *));
305 static void validate_all_switches PARAMS ((void));
306 static void give_switch PARAMS ((int, int, int));
307 static int used_arg PARAMS ((const char *, int));
308 static int default_arg PARAMS ((const char *, int));
309 static void set_multilib_dir PARAMS ((void));
310 static void print_multilib_info PARAMS ((void));
311 static void perror_with_name PARAMS ((const char *));
312 static void pfatal_pexecute PARAMS ((const char *, const char *))
314 static void notice PARAMS ((const char *, ...))
316 static void display_help PARAMS ((void));
317 static void add_preprocessor_option PARAMS ((const char *, int));
318 static void add_assembler_option PARAMS ((const char *, int));
319 static void add_linker_option PARAMS ((const char *, int));
320 static void process_command PARAMS ((int, const char *const *));
321 static int execute PARAMS ((void));
322 static void clear_args PARAMS ((void));
323 static void fatal_error PARAMS ((int));
324 #ifdef ENABLE_SHARED_LIBGCC
325 static void init_gcc_specs PARAMS ((struct obstack *,
326 const char *, const char *,
329 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
330 static const char *convert_filename PARAMS ((const char *, int, int));
333 /* The Specs Language
335 Specs are strings containing lines, each of which (if not blank)
336 is made up of a program name, and arguments separated by spaces.
337 The program name must be exact and start from root, since no path
338 is searched and it is unreliable to depend on the current working directory.
339 Redirection of input or output is not supported; the subprograms must
340 accept filenames saying what files to read and write.
342 In addition, the specs can contain %-sequences to substitute variable text
343 or for conditional text. Here is a table of all defined %-sequences.
344 Note that spaces are not generated automatically around the results of
345 expanding these sequences; therefore, you can concatenate them together
346 or with constant text in a single argument.
348 %% substitute one % into the program name or argument.
349 %i substitute the name of the input file being processed.
350 %b substitute the basename of the input file being processed.
351 This is the substring up to (and not including) the last period
352 and not including the directory.
353 %B same as %b, but include the file suffix (text after the last period).
355 substitute a file name that has suffix SUFFIX and is chosen
356 once per compilation, and mark the argument a la %d. To reduce
357 exposure to denial-of-service attacks, the file name is now
358 chosen in a way that is hard to predict even when previously
359 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
360 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
361 the regexp "[.A-Za-z]*%O"; "%O" is treated exactly as if it
362 had been pre-processed. Previously, %g was simply substituted
363 with a file name chosen once per compilation, without regard
364 to any appended suffix (which was therefore treated just like
365 ordinary text), making such attacks more likely to succeed.
367 like %g, but generates a new temporary file name even if %uSUFFIX
370 substitutes the last file name generated with %uSUFFIX, generating a
371 new one if there is no such last file name. In the absence of any
372 %uSUFFIX, this is just like %gSUFFIX, except they don't share
373 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
374 would involve the generation of two distinct file names, one
375 for each `%g.s' and another for each `%U.s'. Previously, %U was
376 simply substituted with a file name chosen for the previous %u,
377 without regard to any appended suffix.
379 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
380 writable, and if save-temps is off; otherwise, substitute the name
381 of a temporary file, just like %u. This temporary file is not
382 meant for communication between processes, but rather as a junk
385 substitutes .SUFFIX for the suffixes of a matched switch's args when
386 it is subsequently output with %*. SUFFIX is terminated by the next
388 %d marks the argument containing or following the %d as a
389 temporary file name, so that that file will be deleted if CC exits
390 successfully. Unlike %g, this contributes no text to the argument.
391 %w marks the argument containing or following the %w as the
392 "output file" of this compilation. This puts the argument
393 into the sequence of arguments that %o will substitute later.
395 like %{...} but mark last argument supplied within
396 as a file to be deleted on failure.
397 %o substitutes the names of all the output files, with spaces
398 automatically placed around them. You should write spaces
399 around the %o as well or the results are undefined.
400 %o is for use in the specs for running the linker.
401 Input files whose names have no recognized suffix are not compiled
402 at all, but they are included among the output files, so they will
404 %O substitutes the suffix for object files. Note that this is
405 handled specially when it immediately follows %g, %u, or %U
406 (with or without a suffix argument) because of the need for
407 those to form complete file names. The handling is such that
408 %O is treated exactly as if it had already been substituted,
409 except that %g, %u, and %U do not currently support additional
410 SUFFIX characters following %O as they would following, for
412 %p substitutes the standard macro predefinitions for the
413 current target machine. Use this when running cpp.
414 %P like %p, but puts `__' before and after the name of each macro.
415 (Except macros that already have __.)
417 %I Substitute a -iprefix option made from GCC_EXEC_PREFIX.
418 %s current argument is the name of a library or startup file of some sort.
419 Search for that file in a standard list of directories
420 and substitute the full name found.
421 %eSTR Print STR as an error message. STR is terminated by a newline.
422 Use this when inconsistent options are detected.
423 %nSTR Print STR as an notice. STR is terminated by a newline.
424 %x{OPTION} Accumulate an option for %X.
425 %X Output the accumulated linker options specified by compilations.
426 %Y Output the accumulated assembler options specified by compilations.
427 %Z Output the accumulated preprocessor options specified by compilations.
428 %v1 Substitute the major version number of GCC.
429 (For version 2.5.3, this is 2.)
430 %v2 Substitute the minor version number of GCC.
431 (For version 2.5.3, this is 5.)
432 %v3 Substitute the patch level number of GCC.
433 (For version 2.5.3, this is 3.)
434 %a process ASM_SPEC as a spec.
435 This allows config.h to specify part of the spec for running as.
436 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
437 used here. This can be used to run a post-processor after the
438 assembler has done its job.
439 %D Dump out a -L option for each directory in startfile_prefixes.
440 If multilib_dir is set, extra entries are generated with it affixed.
441 %l process LINK_SPEC as a spec.
442 %L process LIB_SPEC as a spec.
443 %G process LIBGCC_SPEC as a spec.
444 %M output multilib_dir with directory separators replaced with "_";
445 if multilib_dir is not set or is ".", output "".
446 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
447 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
448 %c process SIGNED_CHAR_SPEC as a spec.
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, %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 ""
585 /* This spec is used for telling cpp whether char is signed or not. */
586 #ifndef SIGNED_CHAR_SPEC
587 /* Use #if rather than ?:
588 because MIPS C compiler rejects like ?: in initializers. */
589 #if DEFAULT_SIGNED_CHAR
590 #define SIGNED_CHAR_SPEC "%{funsigned-char:-D__CHAR_UNSIGNED__}"
592 #define SIGNED_CHAR_SPEC "%{!fsigned-char:-D__CHAR_UNSIGNED__}"
597 #define LINKER_NAME "collect2"
600 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
602 #ifndef ASM_DEBUG_SPEC
603 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
604 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
605 # define ASM_DEBUG_SPEC \
606 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
607 ? "%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}" \
608 : "%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}")
610 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
611 # define ASM_DEBUG_SPEC "%{g*:--gstabs}"
613 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
614 # define ASM_DEBUG_SPEC "%{g*:--gdwarf2}"
618 #ifndef ASM_DEBUG_SPEC
619 # define ASM_DEBUG_SPEC ""
622 /* Here is the spec for running the linker, after compiling all files. */
624 /* -u* was put back because both BSD and SysV seem to support it. */
625 /* %{static:} simply prevents an error message if the target machine
626 doesn't handle -static. */
627 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
628 scripts which exist in user specified directories, or in standard
630 #ifndef LINK_COMMAND_SPEC
631 #define LINK_COMMAND_SPEC "\
632 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
633 %(linker) %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r} %{s} %{t}\
634 %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
635 %{static:} %{L*} %(link_libgcc) %o %{!nostdlib:%{!nodefaultlibs:%G %L %G}}\
636 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
639 #ifndef LINK_LIBGCC_SPEC
640 # ifdef LINK_LIBGCC_SPECIAL
641 /* Don't generate -L options for startfile prefix list. */
642 # define LINK_LIBGCC_SPEC ""
644 /* Do generate them. */
645 # define LINK_LIBGCC_SPEC "%D"
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 *signed_char_spec = SIGNED_CHAR_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;
667 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
668 There should be no need to override these in target dependent files,
669 but we need to copy them to the specs file so that newer versions
670 of the GCC driver can correctly drive older tool chains with the
671 appropriate -B options. */
673 static const char *trad_capable_cpp =
674 "%{traditional|ftraditional|traditional-cpp:trad}cpp0";
676 static const char *cpp_options =
677 "%{C:%{!E:%eGNU C does not support -C without using -E}}\
678 %{std*} %{nostdinc*}\
679 %{C} %{v} %{I*} %{P} %{$} %I\
680 %{MD:-M -MF %W{!o: %b.d}%W{o*:%.d%*}}\
681 %{MMD:-MM -MF %W{!o: %b.d}%W{o*:%.d%*}}\
682 %{M} %{MM} %W{MF*} %{MG} %{MP} %{MQ*} %{MT*} %{M|MD|MM|MMD:%{o*:-MQ %*}}\
683 %{!no-gcc:-D__GNUC__=%v1 -D__GNUC_MINOR__=%v2 -D__GNUC_PATCHLEVEL__=%v3}\
684 %{!undef:%{!ansi:%{!std=*:%p}%{std=gnu*:%p}} %P} %{trigraphs}\
685 %c %{Os:-D__OPTIMIZE_SIZE__} %{O*:%{!O0:-D__OPTIMIZE__}}\
686 %{fno-inline|O0|!O*:-D__NO_INLINE__} %{ffast-math:-D__FAST_MATH__}\
687 %{fshort-wchar:-U__WCHAR_TYPE__ -D__WCHAR_TYPE__=short\\ unsigned\\ int}\
688 %{ffreestanding:-D__STDC_HOSTED__=0} %{fno-hosted:-D__STDC_HOSTED__=0}\
689 %{!ffreestanding:%{!fno-hosted:-D__STDC_HOSTED__=1}}\
690 %{fshow-column} %{fno-show-column}\
691 %{fleading-underscore} %{fno-leading-underscore}\
692 %{fno-operator-names} %{ftabstop=*} %{remap}\
693 %{g3:-dD} %{W*} %{w} %{pedantic*} %{H} %{d*} %C %{D*&U*&A*} %{i*} %Z %i\
696 /* NB: This is shared amongst all front-ends. */
697 static const char *cc1_options =
698 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
699 %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\
700 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{std*} %{ansi}\
701 %{traditional} %{v:-version} %{pg:-p} %{p} %{f*}\
702 %{Qn:-fno-ident} %{--help:--help}\
703 %{--target-help:--target-help}\
704 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
705 %{fsyntax-only:-o %j} %{-param*}";
707 static const char *asm_options =
708 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
710 static const char *invoke_as =
711 "%{!S:-o %{|!pipe:%g.s} |\n as %(asm_options) %{!pipe:%g.s} %A }";
713 /* Some compilers have limits on line lengths, and the multilib_select
714 and/or multilib_matches strings can be very long, so we build them at
716 static struct obstack multilib_obstack;
717 static const char *multilib_select;
718 static const char *multilib_matches;
719 static const char *multilib_defaults;
720 static const char *multilib_exclusions;
721 #include "multilib.h"
723 /* Check whether a particular argument is a default argument. */
725 #ifndef MULTILIB_DEFAULTS
726 #define MULTILIB_DEFAULTS { "" }
729 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
733 struct user_specs *next;
734 const char *filename;
737 static struct user_specs *user_specs_head, *user_specs_tail;
739 /* This defines which switch letters take arguments. */
741 #define DEFAULT_SWITCH_TAKES_ARG(CHAR) \
742 ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o' \
743 || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u' \
744 || (CHAR) == 'I' || (CHAR) == 'm' || (CHAR) == 'x' \
745 || (CHAR) == 'L' || (CHAR) == 'A' || (CHAR) == 'V' \
746 || (CHAR) == 'B' || (CHAR) == 'b')
748 #ifndef SWITCH_TAKES_ARG
749 #define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR)
752 /* This defines which multi-letter switches take arguments. */
754 #define DEFAULT_WORD_SWITCH_TAKES_ARG(STR) \
755 (!strcmp (STR, "Tdata") || !strcmp (STR, "Ttext") \
756 || !strcmp (STR, "Tbss") || !strcmp (STR, "include") \
757 || !strcmp (STR, "imacros") || !strcmp (STR, "aux-info") \
758 || !strcmp (STR, "idirafter") || !strcmp (STR, "iprefix") \
759 || !strcmp (STR, "iwithprefix") || !strcmp (STR, "iwithprefixbefore") \
760 || !strcmp (STR, "isystem") || !strcmp (STR, "-param") \
761 || !strcmp (STR, "specs") \
762 || !strcmp (STR, "MF") || !strcmp (STR, "MT") || !strcmp (STR, "MQ"))
764 #ifndef WORD_SWITCH_TAKES_ARG
765 #define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
768 #ifdef HAVE_TARGET_EXECUTABLE_SUFFIX
769 /* This defines which switches stop a full compilation. */
770 #define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \
771 ((CHAR) == 'c' || (CHAR) == 'S')
773 #ifndef SWITCH_CURTAILS_COMPILATION
774 #define SWITCH_CURTAILS_COMPILATION(CHAR) \
775 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR)
779 /* Record the mapping from file suffixes for compilation specs. */
783 const char *suffix; /* Use this compiler for input files
784 whose names end in this suffix. */
786 const char *spec; /* To use this compiler, run this spec. */
788 const char *cpp_spec; /* If non-NULL, substitute this spec
789 for `%C', rather than the usual
793 /* Pointer to a vector of `struct compiler' that gives the spec for
794 compiling a file, based on its suffix.
795 A file that does not end in any of these suffixes will be passed
796 unchanged to the loader and nothing else will be done to it.
798 An entry containing two 0s is used to terminate the vector.
800 If multiple entries match a file, the last matching one is used. */
802 static struct compiler *compilers;
804 /* Number of entries in `compilers', not counting the null terminator. */
806 static int n_compilers;
808 /* The default list of file name suffixes and their compilation specs. */
810 static struct compiler default_compilers[] =
812 /* Add lists of suffixes of known languages here. If those languages
813 were not present when we built the driver, we will hit these copies
814 and be given a more meaningful error than "file not used since
815 linking is not done". */
816 {".m", "#Objective-C", 0}, {".mi", "#Objective-C", 0},
817 {".cc", "#C++", 0}, {".cxx", "#C++", 0}, {".cpp", "#C++", 0},
818 {".cp", "#C++", 0}, {".c++", "#C++", 0}, {".C", "#C++", 0},
820 {".ads", "#Ada", 0}, {".adb", "#Ada", 0},
821 {".f", "#Fortran", 0}, {".for", "#Fortran", 0}, {".fpp", "#Fortran", 0},
822 {".F", "#Fortran", 0}, {".FOR", "#Fortran", 0}, {".FPP", "#Fortran", 0},
823 {".r", "#Ratfor", 0},
824 {".p", "#Pascal", 0}, {".pas", "#Pascal", 0},
825 {".ch", "#Chill", 0}, {".chi", "#Chill", 0},
826 {".java", "#Java", 0}, {".class", "#Java", 0},
827 {".zip", "#Java", 0}, {".jar", "#Java", 0},
828 /* Next come the entries for C. */
831 /* cc1 has an integrated ISO C preprocessor. We should invoke the
832 external preprocessor if -save-temps or -traditional is given. */
833 "%{E|M|MM:%(trad_capable_cpp) -lang-c %{ansi:-std=c89} %(cpp_options)}\
835 %{save-temps:%(trad_capable_cpp) -lang-c %{ansi:-std=c89}\
836 %(cpp_options) %b.i \n\
837 cc1 -fpreprocessed %b.i %(cc1_options)}\
839 %{traditional|ftraditional|traditional-cpp:\
840 tradcpp0 -lang-c %{ansi:-std=c89} %(cpp_options) %{!pipe:%g.i} |\n\
841 cc1 -fpreprocessed %{!pipe:%g.i} %(cc1_options)}\
842 %{!traditional:%{!ftraditional:%{!traditional-cpp:\
843 cc1 -lang-c %{ansi:-std=c89} %(cpp_options) %(cc1_options)}}}}\
844 %{!fsyntax-only:%(invoke_as)}}}}", 0},
846 "%{!E:%e-E required when input is from standard input}\
847 %(trad_capable_cpp) -lang-c %{ansi:-std=c89} %(cpp_options)", 0},
848 {".h", "@c-header", 0},
850 "%{!E:%ecompilation of header file requested} \
851 %(trad_capable_cpp) -lang-c %{ansi:-std=c89} %(cpp_options)", 0},
852 {".i", "@cpp-output", 0},
854 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0},
855 {".s", "@assembler", 0},
857 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0},
858 {".S", "@assembler-with-cpp", 0},
859 {"@assembler-with-cpp",
860 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
861 %{!M:%{!MM:%{!E:%{!S:-o %{|!pipe:%g.s} |\n\
862 as %(asm_debug) %(asm_options) %{!pipe:%g.s} %A }}}}", 0},
864 /* Mark end of table */
868 /* Number of elements in default_compilers, not counting the terminator. */
870 static int n_default_compilers
871 = (sizeof default_compilers / sizeof (struct compiler)) - 1;
873 /* A vector of options to give to the linker.
874 These options are accumulated by %x,
875 and substituted into the linker command with %X. */
876 static int n_linker_options;
877 static char **linker_options;
879 /* A vector of options to give to the assembler.
880 These options are accumulated by -Wa,
881 and substituted into the assembler command with %Y. */
882 static int n_assembler_options;
883 static char **assembler_options;
885 /* A vector of options to give to the preprocessor.
886 These options are accumulated by -Wp,
887 and substituted into the preprocessor command with %Z. */
888 static int n_preprocessor_options;
889 static char **preprocessor_options;
891 /* Define how to map long options into short ones. */
893 /* This structure describes one mapping. */
896 /* The long option's name. */
897 const char *const name;
898 /* The equivalent short option. */
899 const char *const equivalent;
900 /* Argument info. A string of flag chars; NULL equals no options.
901 a => argument required.
902 o => argument optional.
903 j => join argument to equivalent, making one word.
904 * => require other text after NAME as an argument. */
905 const char *const arg_info;
908 /* This is the table of mappings. Mappings are tried sequentially
909 for each option encountered; the first one that matches, wins. */
911 static const struct option_map option_map[] =
913 {"--all-warnings", "-Wall", 0},
914 {"--ansi", "-ansi", 0},
915 {"--assemble", "-S", 0},
916 {"--assert", "-A", "a"},
917 {"--classpath", "-fclasspath=", "aj"},
918 {"--CLASSPATH", "-fCLASSPATH=", "aj"},
919 {"--comments", "-C", 0},
920 {"--compile", "-c", 0},
921 {"--debug", "-g", "oj"},
922 {"--define-macro", "-D", "aj"},
923 {"--dependencies", "-M", 0},
924 {"--dump", "-d", "a"},
925 {"--dumpbase", "-dumpbase", "a"},
926 {"--entry", "-e", 0},
927 {"--extra-warnings", "-W", 0},
928 {"--for-assembler", "-Wa", "a"},
929 {"--for-linker", "-Xlinker", "a"},
930 {"--force-link", "-u", "a"},
931 {"--imacros", "-imacros", "a"},
932 {"--include", "-include", "a"},
933 {"--include-barrier", "-I-", 0},
934 {"--include-directory", "-I", "aj"},
935 {"--include-directory-after", "-idirafter", "a"},
936 {"--include-prefix", "-iprefix", "a"},
937 {"--include-with-prefix", "-iwithprefix", "a"},
938 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
939 {"--include-with-prefix-after", "-iwithprefix", "a"},
940 {"--language", "-x", "a"},
941 {"--library-directory", "-L", "a"},
942 {"--machine", "-m", "aj"},
943 {"--machine-", "-m", "*j"},
944 {"--no-line-commands", "-P", 0},
945 {"--no-precompiled-includes", "-noprecomp", 0},
946 {"--no-standard-includes", "-nostdinc", 0},
947 {"--no-standard-libraries", "-nostdlib", 0},
948 {"--no-warnings", "-w", 0},
949 {"--optimize", "-O", "oj"},
950 {"--output", "-o", "a"},
951 {"--output-class-directory", "-foutput-class-dir=", "ja"},
952 {"--param", "--param", "a"},
953 {"--pedantic", "-pedantic", 0},
954 {"--pedantic-errors", "-pedantic-errors", 0},
955 {"--pipe", "-pipe", 0},
956 {"--prefix", "-B", "a"},
957 {"--preprocess", "-E", 0},
958 {"--print-search-dirs", "-print-search-dirs", 0},
959 {"--print-file-name", "-print-file-name=", "aj"},
960 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
961 {"--print-missing-file-dependencies", "-MG", 0},
962 {"--print-multi-lib", "-print-multi-lib", 0},
963 {"--print-multi-directory", "-print-multi-directory", 0},
964 {"--print-prog-name", "-print-prog-name=", "aj"},
965 {"--profile", "-p", 0},
966 {"--profile-blocks", "-a", 0},
967 {"--quiet", "-q", 0},
968 {"--save-temps", "-save-temps", 0},
969 {"--shared", "-shared", 0},
970 {"--silent", "-q", 0},
971 {"--specs", "-specs=", "aj"},
972 {"--static", "-static", 0},
973 {"--std", "-std=", "aj"},
974 {"--symbolic", "-symbolic", 0},
975 {"--target", "-b", "a"},
976 {"--time", "-time", 0},
977 {"--trace-includes", "-H", 0},
978 {"--traditional", "-traditional", 0},
979 {"--traditional-cpp", "-traditional-cpp", 0},
980 {"--trigraphs", "-trigraphs", 0},
981 {"--undefine-macro", "-U", "aj"},
982 {"--use-version", "-V", "a"},
983 {"--user-dependencies", "-MM", 0},
984 {"--verbose", "-v", 0},
985 {"--version", "-dumpversion", 0},
986 {"--warn-", "-W", "*j"},
987 {"--write-dependencies", "-MD", 0},
988 {"--write-user-dependencies", "-MMD", 0},
993 #ifdef TARGET_OPTION_TRANSLATE_TABLE
994 static const struct {
995 const char *const option_found;
996 const char *const replacements;
997 } target_option_translations[] =
999 TARGET_OPTION_TRANSLATE_TABLE,
1004 /* Translate the options described by *ARGCP and *ARGVP.
1005 Make a new vector and store it back in *ARGVP,
1006 and store its length in *ARGVC. */
1009 translate_options (argcp, argvp)
1011 const char *const **argvp;
1015 const char *const *argv = *argvp;
1016 int newvsize = (argc + 2) * 2 * sizeof (const char *);
1018 (const char **) xmalloc (newvsize);
1022 newv[newindex++] = argv[i++];
1026 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1030 target_option_translations[tott_idx].option_found;
1033 if (strcmp (target_option_translations[tott_idx].option_found,
1040 for (sp = target_option_translations[tott_idx].replacements;
1047 newvsize += spaces * sizeof (const char *);
1048 newv = (const char **) xrealloc (newv, newvsize);
1050 sp = target_option_translations[tott_idx].replacements;
1059 newv[newindex++] = np;
1060 while (*np != ' ' && *np)
1071 if (target_option_translations[tott_idx].option_found)
1075 /* Translate -- options. */
1076 if (argv[i][0] == '-' && argv[i][1] == '-')
1079 /* Find a mapping that applies to this option. */
1080 for (j = 0; j < ARRAY_SIZE (option_map); j++)
1082 size_t optlen = strlen (option_map[j].name);
1083 size_t arglen = strlen (argv[i]);
1084 size_t complen = arglen > optlen ? optlen : arglen;
1085 const char *arginfo = option_map[j].arg_info;
1090 if (!strncmp (argv[i], option_map[j].name, complen))
1092 const char *arg = 0;
1094 if (arglen < optlen)
1097 for (k = j + 1; k < ARRAY_SIZE (option_map); k++)
1098 if (strlen (option_map[k].name) >= arglen
1099 && !strncmp (argv[i], option_map[k].name, arglen))
1101 error ("ambiguous abbreviation %s", argv[i]);
1105 if (k != ARRAY_SIZE (option_map))
1109 if (arglen > optlen)
1111 /* If the option has an argument, accept that. */
1112 if (argv[i][optlen] == '=')
1113 arg = argv[i] + optlen + 1;
1115 /* If this mapping requires extra text at end of name,
1116 accept that as "argument". */
1117 else if (strchr (arginfo, '*') != 0)
1118 arg = argv[i] + optlen;
1120 /* Otherwise, extra text at end means mismatch.
1121 Try other mappings. */
1126 else if (strchr (arginfo, '*') != 0)
1128 error ("incomplete `%s' option", option_map[j].name);
1132 /* Handle arguments. */
1133 if (strchr (arginfo, 'a') != 0)
1139 error ("missing argument to `%s' option",
1140 option_map[j].name);
1147 else if (strchr (arginfo, '*') != 0)
1149 else if (strchr (arginfo, 'o') == 0)
1152 error ("extraneous argument to `%s' option",
1153 option_map[j].name);
1157 /* Store the translation as one argv elt or as two. */
1158 if (arg != 0 && strchr (arginfo, 'j') != 0)
1159 newv[newindex++] = concat (option_map[j].equivalent, arg,
1163 newv[newindex++] = option_map[j].equivalent;
1164 newv[newindex++] = arg;
1167 newv[newindex++] = option_map[j].equivalent;
1175 /* Handle old-fashioned options--just copy them through,
1176 with their arguments. */
1177 else if (argv[i][0] == '-')
1179 const char *p = argv[i] + 1;
1183 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
1184 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
1185 else if (WORD_SWITCH_TAKES_ARG (p))
1186 nskip += WORD_SWITCH_TAKES_ARG (p);
1187 else if ((c == 'B' || c == 'b' || c == 'V' || c == 'x')
1190 else if (! strcmp (p, "Xlinker"))
1193 /* Watch out for an option at the end of the command line that
1194 is missing arguments, and avoid skipping past the end of the
1196 if (nskip + i > argc)
1201 newv[newindex++] = argv[i++];
1206 /* Ordinary operands, or +e options. */
1207 newv[newindex++] = argv[i++];
1222 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1223 be considered whitespace. */
1224 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1226 else if (*p == '\n' || *p == ' ' || *p == '\t')
1240 /* Structures to keep track of prefixes to try when looking for files. */
1244 const char *prefix; /* String to prepend to the path. */
1245 struct prefix_list *next; /* Next in linked list. */
1246 int require_machine_suffix; /* Don't use without machine_suffix. */
1247 /* 2 means try both machine_suffix and just_machine_suffix. */
1248 int *used_flag_ptr; /* 1 if a file was found with this prefix. */
1249 int priority; /* Sort key - priority within list */
1254 struct prefix_list *plist; /* List of prefixes to try */
1255 int max_len; /* Max length of a prefix in PLIST */
1256 const char *name; /* Name of this list (used in config stuff) */
1259 /* List of prefixes to try when looking for executables. */
1261 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1263 /* List of prefixes to try when looking for startup (crt0) files. */
1265 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1267 /* List of prefixes to try when looking for include files. */
1269 static struct path_prefix include_prefixes = { 0, 0, "include" };
1271 /* Suffix to attach to directories searched for commands.
1272 This looks like `MACHINE/VERSION/'. */
1274 static const char *machine_suffix = 0;
1276 /* Suffix to attach to directories searched for commands.
1277 This is just `MACHINE/'. */
1279 static const char *just_machine_suffix = 0;
1281 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1283 static const char *gcc_exec_prefix;
1285 /* Default prefixes to attach to command names. */
1287 #ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */
1288 #undef MD_EXEC_PREFIX
1289 #undef MD_STARTFILE_PREFIX
1290 #undef MD_STARTFILE_PREFIX_1
1293 /* If no prefixes defined, use the null string, which will disable them. */
1294 #ifndef MD_EXEC_PREFIX
1295 #define MD_EXEC_PREFIX ""
1297 #ifndef MD_STARTFILE_PREFIX
1298 #define MD_STARTFILE_PREFIX ""
1300 #ifndef MD_STARTFILE_PREFIX_1
1301 #define MD_STARTFILE_PREFIX_1 ""
1304 /* Supply defaults for the standard prefixes. */
1306 #ifndef STANDARD_EXEC_PREFIX
1307 #define STANDARD_EXEC_PREFIX "/usr/local/lib/gcc-lib/"
1309 #ifndef STANDARD_STARTFILE_PREFIX
1310 #define STANDARD_STARTFILE_PREFIX "/usr/local/lib/"
1312 #ifndef TOOLDIR_BASE_PREFIX
1313 #define TOOLDIR_BASE_PREFIX "/usr/local/"
1315 #ifndef STANDARD_BINDIR_PREFIX
1316 #define STANDARD_BINDIR_PREFIX "/usr/local/bin"
1319 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1320 static const char *const standard_exec_prefix_1 = "/usr/lib/gcc/";
1321 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1323 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1324 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1325 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1326 static const char *const standard_startfile_prefix_1 = "/lib/";
1327 static const char *const standard_startfile_prefix_2 = "/usr/lib/";
1329 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1330 static const char *tooldir_prefix;
1332 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1334 /* Subdirectory to use for locating libraries. Set by
1335 set_multilib_dir based on the compilation options. */
1337 static const char *multilib_dir;
1339 /* Structure to keep track of the specs that have been defined so far.
1340 These are accessed using %(specname) or %[specname] in a compiler
1345 /* The following 2 fields must be first */
1346 /* to allow EXTRA_SPECS to be initialized */
1347 const char *name; /* name of the spec. */
1348 const char *ptr; /* available ptr if no static pointer */
1350 /* The following fields are not initialized */
1351 /* by EXTRA_SPECS */
1352 const char **ptr_spec; /* pointer to the spec itself. */
1353 struct spec_list *next; /* Next spec in linked list. */
1354 int name_len; /* length of the name */
1355 int alloc_p; /* whether string was allocated */
1358 #define INIT_STATIC_SPEC(NAME,PTR) \
1359 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1361 /* List of statically defined specs. */
1362 static struct spec_list static_specs[] =
1364 INIT_STATIC_SPEC ("asm", &asm_spec),
1365 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1366 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1367 INIT_STATIC_SPEC ("asm_options", &asm_options),
1368 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1369 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1370 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1371 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1372 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1373 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1374 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1375 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1376 INIT_STATIC_SPEC ("link", &link_spec),
1377 INIT_STATIC_SPEC ("lib", &lib_spec),
1378 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1379 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1380 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces),
1381 INIT_STATIC_SPEC ("signed_char", &signed_char_spec),
1382 INIT_STATIC_SPEC ("predefines", &cpp_predefines),
1383 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1384 INIT_STATIC_SPEC ("version", &compiler_version),
1385 INIT_STATIC_SPEC ("multilib", &multilib_select),
1386 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1387 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1388 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1389 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1390 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1391 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1392 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1393 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1394 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1397 #ifdef EXTRA_SPECS /* additional specs needed */
1398 /* Structure to keep track of just the first two args of a spec_list.
1399 That is all that the EXTRA_SPECS macro gives us. */
1402 const char *const name;
1403 const char *const ptr;
1406 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1407 static struct spec_list *extra_specs = (struct spec_list *) 0;
1410 /* List of dynamically allocates specs that have been defined so far. */
1412 static struct spec_list *specs = (struct spec_list *) 0;
1414 /* Add appropriate libgcc specs to OBSTACK, taking into account
1415 various permutations of -shared-libgcc, -shared, and such. */
1417 #ifdef ENABLE_SHARED_LIBGCC
1419 init_gcc_specs (obstack, shared_name, static_name, eh_name)
1420 struct obstack *obstack;
1421 const char *shared_name;
1422 const char *static_name;
1423 const char *eh_name;
1428 /* If we see -shared-libgcc, then use the shared version. */
1429 sprintf (buffer, "%%{shared-libgcc:%s %s}", shared_name, static_name);
1430 obstack_grow (obstack, buffer, strlen (buffer));
1431 /* If we see -static-libgcc, then use the static version. */
1432 sprintf (buffer, "%%{static-libgcc:%s %s}", static_name, eh_name);
1433 obstack_grow (obstack, buffer, strlen (buffer));
1434 /* Otherwise, if we see -shared, then use the shared version
1435 if using EH registration routines or static version without
1436 exception handling routines otherwise. */
1437 p = "%{!shared-libgcc:%{!static-libgcc:%{shared:";
1438 obstack_grow (obstack, p, strlen (p));
1440 sprintf (buffer, "%s}}}", static_name);
1442 sprintf (buffer, "%s}}}", shared_name);
1444 obstack_grow (obstack, buffer, strlen (buffer));
1445 /* Otherwise, use the static version. */
1447 "%%{!shared-libgcc:%%{!static-libgcc:%%{!shared:%s %s}}}",
1448 static_name, eh_name);
1449 obstack_grow (obstack, buffer, strlen (buffer));
1451 #endif /* ENABLE_SHARED_LIBGCC */
1453 /* Initialize the specs lookup routines. */
1458 struct spec_list *next = (struct spec_list *) 0;
1459 struct spec_list *sl = (struct spec_list *) 0;
1463 return; /* Already initialized. */
1466 notice ("Using built-in specs.\n");
1469 extra_specs = (struct spec_list *)
1470 xcalloc (sizeof (struct spec_list), ARRAY_SIZE (extra_specs_1));
1472 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1474 sl = &extra_specs[i];
1475 sl->name = extra_specs_1[i].name;
1476 sl->ptr = extra_specs_1[i].ptr;
1478 sl->name_len = strlen (sl->name);
1479 sl->ptr_spec = &sl->ptr;
1484 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1486 sl = &static_specs[i];
1491 #ifdef ENABLE_SHARED_LIBGCC
1492 /* ??? If neither -shared-libgcc nor --static-libgcc was
1493 seen, then we should be making an educated guess. Some proposed
1494 heuristics for ELF include:
1496 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1497 program will be doing dynamic loading, which will likely
1498 need the shared libgcc.
1500 (2) If "-ldl", then it's also a fair bet that we're doing
1503 (3) For each ET_DYN we're linking against (either through -lfoo
1504 or /some/path/foo.so), check to see whether it or one of
1505 its dependencies depends on a shared libgcc.
1509 If the runtime is fixed to look for program headers instead
1510 of calling __register_frame_info at all, for each object,
1511 use the shared libgcc if any EH symbol referenced.
1513 If crtstuff is fixed to not invoke __register_frame_info
1514 automatically, for each object, use the shared libgcc if
1515 any non-empty unwind section found.
1517 Doing any of this probably requires invoking an external program to
1518 do the actual object file scanning. */
1520 const char *p = libgcc_spec;
1523 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1524 when given the proper command line arguments. */
1527 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1529 init_gcc_specs (&obstack,
1530 #ifdef NO_SHARED_LIBGCC_MULTILIB
1541 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1543 /* Ug. We don't know shared library extensions. Hope that
1544 systems that use this form don't do shared libraries. */
1545 init_gcc_specs (&obstack,
1546 #ifdef NO_SHARED_LIBGCC_MULTILIB
1559 obstack_1grow (&obstack, *p);
1560 in_sep = (*p == ' ');
1565 obstack_1grow (&obstack, '\0');
1566 libgcc_spec = obstack_finish (&obstack);
1569 #ifdef USE_AS_TRADITIONAL_FORMAT
1570 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1572 static const char tf[] = "--traditional-format ";
1573 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1574 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1575 asm_spec = obstack_finish (&obstack);
1579 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1580 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1581 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1582 link_spec = obstack_finish (&obstack);
1588 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1589 removed; If the spec starts with a + then SPEC is added to the end of the
1593 set_spec (name, spec)
1597 struct spec_list *sl;
1598 const char *old_spec;
1599 int name_len = strlen (name);
1602 /* If this is the first call, initialize the statically allocated specs. */
1605 struct spec_list *next = (struct spec_list *) 0;
1606 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1608 sl = &static_specs[i];
1615 /* See if the spec already exists. */
1616 for (sl = specs; sl; sl = sl->next)
1617 if (name_len == sl->name_len && !strcmp (sl->name, name))
1622 /* Not found - make it. */
1623 sl = (struct spec_list *) xmalloc (sizeof (struct spec_list));
1624 sl->name = xstrdup (name);
1625 sl->name_len = name_len;
1626 sl->ptr_spec = &sl->ptr;
1628 *(sl->ptr_spec) = "";
1633 old_spec = *(sl->ptr_spec);
1634 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1635 ? concat (old_spec, spec + 1, NULL)
1640 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1643 /* Free the old spec. */
1644 if (old_spec && sl->alloc_p)
1645 free ((PTR) old_spec);
1650 /* Accumulate a command (program name and args), and run it. */
1652 /* Vector of pointers to arguments in the current line of specifications. */
1654 static const char **argbuf;
1656 /* Number of elements allocated in argbuf. */
1658 static int argbuf_length;
1660 /* Number of elements in argbuf currently in use (containing args). */
1662 static int argbuf_index;
1664 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1665 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1668 static struct temp_name {
1669 const char *suffix; /* suffix associated with the code. */
1670 int length; /* strlen (suffix). */
1671 int unique; /* Indicates whether %g or %u/%U was used. */
1672 const char *filename; /* associated filename. */
1673 int filename_length; /* strlen (filename). */
1674 struct temp_name *next;
1677 /* Number of commands executed so far. */
1679 static int execution_count;
1681 /* Number of commands that exited with a signal. */
1683 static int signal_count;
1685 /* Name with which this program was invoked. */
1687 static const char *programname;
1689 /* Clear out the vector of arguments (after a command is executed). */
1697 /* Add one argument to the vector at the end.
1698 This is done when a space is seen or at the end of the line.
1699 If DELETE_ALWAYS is nonzero, the arg is a filename
1700 and the file should be deleted eventually.
1701 If DELETE_FAILURE is nonzero, the arg is a filename
1702 and the file should be deleted if this compilation fails. */
1705 store_arg (arg, delete_always, delete_failure)
1707 int delete_always, delete_failure;
1709 if (argbuf_index + 1 == argbuf_length)
1711 = (const char **) xrealloc (argbuf,
1712 (argbuf_length *= 2) * sizeof (const char *));
1714 argbuf[argbuf_index++] = arg;
1715 argbuf[argbuf_index] = 0;
1717 if (delete_always || delete_failure)
1718 record_temp_file (arg, delete_always, delete_failure);
1721 /* Load specs from a file name named FILENAME, replacing occurrences of
1722 various different types of line-endings, \r\n, \n\r and just \r, with
1726 load_specs (filename)
1727 const char *filename;
1731 struct stat statbuf;
1738 notice ("Reading specs from %s\n", filename);
1740 /* Open and stat the file. */
1741 desc = open (filename, O_RDONLY, 0);
1743 pfatal_with_name (filename);
1744 if (stat (filename, &statbuf) < 0)
1745 pfatal_with_name (filename);
1747 /* Read contents of file into BUFFER. */
1748 buffer = xmalloc ((unsigned) statbuf.st_size + 1);
1749 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1751 pfatal_with_name (filename);
1752 buffer[readlen] = 0;
1755 specs = xmalloc (readlen + 1);
1757 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1763 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1765 else if (*(buffer_p + 1) == '\n') /* \r\n */
1779 /* Read compilation specs from a file named FILENAME,
1780 replacing the default ones.
1782 A suffix which starts with `*' is a definition for
1783 one of the machine-specific sub-specs. The "suffix" should be
1784 *asm, *cc1, *cpp, *link, *startfile, *signed_char, etc.
1785 The corresponding spec is stored in asm_spec, etc.,
1786 rather than in the `compilers' vector.
1788 Anything invalid in the file is a fatal error. */
1791 read_specs (filename, main_p)
1792 const char *filename;
1798 buffer = load_specs (filename);
1800 /* Scan BUFFER for specs, putting them in the vector. */
1806 char *in, *out, *p1, *p2, *p3;
1808 /* Advance P in BUFFER to the next nonblank nocomment line. */
1809 p = skip_whitespace (p);
1813 /* Is this a special command that starts with '%'? */
1814 /* Don't allow this for the main specs file, since it would
1815 encourage people to overwrite it. */
1816 if (*p == '%' && !main_p)
1819 while (*p && *p != '\n')
1825 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1826 && (p1[sizeof "%include" - 1] == ' '
1827 || p1[sizeof "%include" - 1] == '\t'))
1831 p1 += sizeof ("%include");
1832 while (*p1 == ' ' || *p1 == '\t')
1835 if (*p1++ != '<' || p[-2] != '>')
1836 fatal ("specs %%include syntax malformed after %ld characters",
1837 (long) (p1 - buffer + 1));
1840 new_filename = find_a_file (&startfile_prefixes, p1, R_OK);
1841 read_specs (new_filename ? new_filename : p1, FALSE);
1844 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1845 && (p1[sizeof "%include_noerr" - 1] == ' '
1846 || p1[sizeof "%include_noerr" - 1] == '\t'))
1850 p1 += sizeof "%include_noerr";
1851 while (*p1 == ' ' || *p1 == '\t')
1854 if (*p1++ != '<' || p[-2] != '>')
1855 fatal ("specs %%include syntax malformed after %ld characters",
1856 (long) (p1 - buffer + 1));
1859 new_filename = find_a_file (&startfile_prefixes, p1, R_OK);
1861 read_specs (new_filename, FALSE);
1862 else if (verbose_flag)
1863 notice ("could not find specs file %s\n", p1);
1866 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1867 && (p1[sizeof "%rename" - 1] == ' '
1868 || p1[sizeof "%rename" - 1] == '\t'))
1871 struct spec_list *sl;
1873 /* Get original name */
1874 p1 += sizeof "%rename";
1875 while (*p1 == ' ' || *p1 == '\t')
1878 if (! ISALPHA ((unsigned char) *p1))
1879 fatal ("specs %%rename syntax malformed after %ld characters",
1880 (long) (p1 - buffer));
1883 while (*p2 && !ISSPACE ((unsigned char) *p2))
1886 if (*p2 != ' ' && *p2 != '\t')
1887 fatal ("specs %%rename syntax malformed after %ld characters",
1888 (long) (p2 - buffer));
1892 while (*p2 == ' ' || *p2 == '\t')
1895 if (! ISALPHA ((unsigned char) *p2))
1896 fatal ("specs %%rename syntax malformed after %ld characters",
1897 (long) (p2 - buffer));
1899 /* Get new spec name. */
1901 while (*p3 && !ISSPACE ((unsigned char) *p3))
1905 fatal ("specs %%rename syntax malformed after %ld characters",
1906 (long) (p3 - buffer));
1909 for (sl = specs; sl; sl = sl->next)
1910 if (name_len == sl->name_len && !strcmp (sl->name, p1))
1914 fatal ("specs %s spec was not found to be renamed", p1);
1916 if (strcmp (p1, p2) == 0)
1921 notice ("rename spec %s to %s\n", p1, p2);
1923 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
1927 set_spec (p2, *(sl->ptr_spec));
1929 free ((PTR) *(sl->ptr_spec));
1931 *(sl->ptr_spec) = "";
1936 fatal ("specs unknown %% command after %ld characters",
1937 (long) (p1 - buffer));
1940 /* Find the colon that should end the suffix. */
1942 while (*p1 && *p1 != ':' && *p1 != '\n')
1945 /* The colon shouldn't be missing. */
1947 fatal ("specs file malformed after %ld characters",
1948 (long) (p1 - buffer));
1950 /* Skip back over trailing whitespace. */
1952 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
1955 /* Copy the suffix to a string. */
1956 suffix = save_string (p, p2 - p);
1957 /* Find the next line. */
1958 p = skip_whitespace (p1 + 1);
1960 fatal ("specs file malformed after %ld characters",
1961 (long) (p - buffer));
1964 /* Find next blank line or end of string. */
1965 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
1968 /* Specs end at the blank line and do not include the newline. */
1969 spec = save_string (p, p1 - p);
1972 /* Delete backslash-newline sequences from the spec. */
1977 if (in[0] == '\\' && in[1] == '\n')
1979 else if (in[0] == '#')
1980 while (*in && *in != '\n')
1988 if (suffix[0] == '*')
1990 if (! strcmp (suffix, "*link_command"))
1991 link_command_spec = spec;
1993 set_spec (suffix + 1, spec);
1997 /* Add this pair to the vector. */
1999 = ((struct compiler *)
2000 xrealloc (compilers,
2001 (n_compilers + 2) * sizeof (struct compiler)));
2003 compilers[n_compilers].suffix = suffix;
2004 compilers[n_compilers].spec = spec;
2006 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2010 link_command_spec = spec;
2013 if (link_command_spec == 0)
2014 fatal ("spec file has no spec for linking");
2017 /* Record the names of temporary files we tell compilers to write,
2018 and delete them at the end of the run. */
2020 /* This is the common prefix we use to make temp file names.
2021 It is chosen once for each run of this program.
2022 It is substituted into a spec by %g or %j.
2023 Thus, all temp file names contain this prefix.
2024 In practice, all temp file names start with this prefix.
2026 This prefix comes from the envvar TMPDIR if it is defined;
2027 otherwise, from the P_tmpdir macro if that is defined;
2028 otherwise, in /usr/tmp or /tmp;
2029 or finally the current directory if all else fails. */
2031 static const char *temp_filename;
2033 /* Length of the prefix. */
2035 static int temp_filename_length;
2037 /* Define the list of temporary files to delete. */
2042 struct temp_file *next;
2045 /* Queue of files to delete on success or failure of compilation. */
2046 static struct temp_file *always_delete_queue;
2047 /* Queue of files to delete on failure of compilation. */
2048 static struct temp_file *failure_delete_queue;
2050 /* Record FILENAME as a file to be deleted automatically.
2051 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2052 otherwise delete it in any case.
2053 FAIL_DELETE nonzero means delete it if a compilation step fails;
2054 otherwise delete it in any case. */
2057 record_temp_file (filename, always_delete, fail_delete)
2058 const char *filename;
2062 char *const name = xstrdup (filename);
2066 struct temp_file *temp;
2067 for (temp = always_delete_queue; temp; temp = temp->next)
2068 if (! strcmp (name, temp->name))
2071 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
2072 temp->next = always_delete_queue;
2074 always_delete_queue = temp;
2081 struct temp_file *temp;
2082 for (temp = failure_delete_queue; temp; temp = temp->next)
2083 if (! strcmp (name, temp->name))
2086 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
2087 temp->next = failure_delete_queue;
2089 failure_delete_queue = temp;
2095 /* Delete all the temporary files whose names we previously recorded. */
2098 delete_if_ordinary (name)
2105 printf ("Delete %s? (y or n) ", name);
2109 while ((c = getchar ()) != '\n' && c != EOF)
2112 if (i == 'y' || i == 'Y')
2114 /* On VMS, more than one version of the temporary file may have been
2115 created. This ensures we delete all of them. */
2116 while (stat (name, &st) >= 0 && S_ISREG (st.st_mode))
2117 if (unlink (name) < 0)
2119 perror_with_name (name);
2123 delete_temp_files ()
2125 struct temp_file *temp;
2127 for (temp = always_delete_queue; temp; temp = temp->next)
2128 delete_if_ordinary (temp->name);
2129 always_delete_queue = 0;
2132 /* Delete all the files to be deleted on error. */
2135 delete_failure_queue ()
2137 struct temp_file *temp;
2139 for (temp = failure_delete_queue; temp; temp = temp->next)
2140 delete_if_ordinary (temp->name);
2144 clear_failure_queue ()
2146 failure_delete_queue = 0;
2149 /* Build a list of search directories from PATHS.
2150 PREFIX is a string to prepend to the list.
2151 If CHECK_DIR_P is non-zero we ensure the directory exists.
2152 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2153 It is also used by the --print-search-dirs flag. */
2156 build_search_list (paths, prefix, check_dir_p)
2157 struct path_prefix *paths;
2161 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0;
2163 = (just_machine_suffix) ? strlen (just_machine_suffix) : 0;
2164 int first_time = TRUE;
2165 struct prefix_list *pprefix;
2167 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2168 obstack_1grow (&collect_obstack, '=');
2170 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next)
2172 int len = strlen (pprefix->prefix);
2176 || is_directory (pprefix->prefix, machine_suffix, 0)))
2179 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2182 obstack_grow (&collect_obstack, pprefix->prefix, len);
2183 obstack_grow (&collect_obstack, machine_suffix, suffix_len);
2186 if (just_machine_suffix
2187 && pprefix->require_machine_suffix == 2
2189 || is_directory (pprefix->prefix, just_machine_suffix, 0)))
2192 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2195 obstack_grow (&collect_obstack, pprefix->prefix, len);
2196 obstack_grow (&collect_obstack, just_machine_suffix,
2200 if (! pprefix->require_machine_suffix)
2203 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2206 obstack_grow (&collect_obstack, pprefix->prefix, len);
2210 obstack_1grow (&collect_obstack, '\0');
2211 return obstack_finish (&collect_obstack);
2214 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2218 putenv_from_prefixes (paths, env_var)
2219 struct path_prefix *paths;
2220 const char *env_var;
2222 putenv (build_search_list (paths, env_var, 1));
2227 /* FIXME: the location independence code for VMS is hairier than this,
2228 and hasn't been written. */
2230 /* Split a filename into component directories. */
2233 split_directories (name, ptr_num_dirs)
2242 /* Count the number of directories. Special case MSDOS disk names as part
2243 of the initial directory. */
2245 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2246 if (name[1] == ':' && IS_DIR_SEPARATOR (name[2]))
2251 #endif /* HAVE_DOS_BASED_FILE_SYSTEM */
2253 while ((ch = *p++) != '\0')
2255 if (IS_DIR_SEPARATOR (ch))
2258 while (IS_DIR_SEPARATOR (*p))
2263 dirs = (char **) xmalloc (sizeof (char *) * (num_dirs + 2));
2265 /* Now copy the directory parts. */
2268 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2269 if (name[1] == ':' && IS_DIR_SEPARATOR (name[2]))
2271 dirs[num_dirs++] = save_string (p, 3);
2274 #endif /* HAVE_DOS_BASED_FILE_SYSTEM */
2277 while ((ch = *p++) != '\0')
2279 if (IS_DIR_SEPARATOR (ch))
2281 while (IS_DIR_SEPARATOR (*p))
2284 dirs[num_dirs++] = save_string (q, p - q);
2290 dirs[num_dirs++] = save_string (q, p - 1 - q);
2292 dirs[num_dirs] = NULL;
2294 *ptr_num_dirs = num_dirs;
2299 /* Release storage held by split directories. */
2302 free_split_directories (dirs)
2307 while (dirs[i] != NULL)
2310 free ((char *) dirs);
2313 /* Given three strings PROGNAME, BIN_PREFIX, PREFIX, return a string that gets
2314 to PREFIX starting with the directory portion of PROGNAME and a relative
2315 pathname of the difference between BIN_PREFIX and PREFIX.
2317 For example, if BIN_PREFIX is /alpha/beta/gamma/gcc/delta, PREFIX is
2318 /alpha/beta/gamma/omega/, and PROGNAME is /red/green/blue/gcc, then this
2319 function will return /red/green/blue/../omega.
2321 If no relative prefix can be found, return NULL. */
2324 make_relative_prefix (progname, bin_prefix, prefix)
2325 const char *progname;
2326 const char *bin_prefix;
2329 char **prog_dirs, **bin_dirs, **prefix_dirs;
2330 int prog_num, bin_num, prefix_num, std_loc_p;
2333 prog_dirs = split_directories (progname, &prog_num);
2334 bin_dirs = split_directories (bin_prefix, &bin_num);
2336 /* If there is no full pathname, try to find the program by checking in each
2337 of the directories specified in the PATH environment variable. */
2342 GET_ENV_PATH_LIST (temp, "PATH");
2345 char *startp, *endp, *nstore;
2346 size_t prefixlen = strlen (temp) + 1;
2350 nstore = (char *) alloca (prefixlen + strlen (progname) + 1);
2352 startp = endp = temp;
2355 if (*endp == PATH_SEPARATOR || *endp == 0)
2360 nstore[1] = DIR_SEPARATOR;
2365 strncpy (nstore, startp, endp - startp);
2366 if (! IS_DIR_SEPARATOR (endp[-1]))
2368 nstore[endp - startp] = DIR_SEPARATOR;
2369 nstore[endp - startp + 1] = 0;
2372 nstore[endp - startp] = 0;
2374 strcat (nstore, progname);
2375 if (! access (nstore, X_OK)
2376 #ifdef HAVE_HOST_EXECUTABLE_SUFFIX
2377 || ! access (strcat (nstore, HOST_EXECUTABLE_SUFFIX), X_OK)
2381 free_split_directories (prog_dirs);
2383 prog_dirs = split_directories (progname, &prog_num);
2389 endp = startp = endp + 1;
2397 /* Remove the program name from comparison of directory names. */
2400 /* Determine if the compiler is installed in the standard location, and if
2401 so, we don't need to specify relative directories. Also, if argv[0]
2402 doesn't contain any directory specifiers, there is not much we can do. */
2404 if (prog_num == bin_num)
2406 for (i = 0; i < bin_num; i++)
2408 if (strcmp (prog_dirs[i], bin_dirs[i]) != 0)
2412 if (prog_num <= 0 || i == bin_num)
2415 free_split_directories (prog_dirs);
2416 free_split_directories (bin_dirs);
2417 prog_dirs = bin_dirs = (char **) 0;
2422 prefix_dirs = split_directories (prefix, &prefix_num);
2424 /* Find how many directories are in common between bin_prefix & prefix. */
2425 n = (prefix_num < bin_num) ? prefix_num : bin_num;
2426 for (common = 0; common < n; common++)
2428 if (strcmp (bin_dirs[common], prefix_dirs[common]) != 0)
2432 /* If there are no common directories, there can be no relative prefix. */
2435 free_split_directories (prog_dirs);
2436 free_split_directories (bin_dirs);
2437 free_split_directories (prefix_dirs);
2441 /* Build up the pathnames in argv[0]. */
2442 for (i = 0; i < prog_num; i++)
2443 obstack_grow (&obstack, prog_dirs[i], strlen (prog_dirs[i]));
2445 /* Now build up the ..'s. */
2446 for (i = common; i < n; i++)
2448 obstack_grow (&obstack, DIR_UP, sizeof (DIR_UP) - 1);
2449 obstack_1grow (&obstack, DIR_SEPARATOR);
2452 /* Put in directories to move over to prefix. */
2453 for (i = common; i < prefix_num; i++)
2454 obstack_grow (&obstack, prefix_dirs[i], strlen (prefix_dirs[i]));
2456 free_split_directories (prog_dirs);
2457 free_split_directories (bin_dirs);
2458 free_split_directories (prefix_dirs);
2460 obstack_1grow (&obstack, '\0');
2461 return obstack_finish (&obstack);
2465 /* Check whether NAME can be accessed in MODE. This is like access,
2466 except that it never considers directories to be executable. */
2469 access_check (name, mode)
2477 if (stat (name, &st) < 0
2478 || S_ISDIR (st.st_mode))
2482 return access (name, mode);
2485 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2486 access to check permissions.
2487 Return 0 if not found, otherwise return its name, allocated with malloc. */
2490 find_a_file (pprefix, name, mode)
2491 struct path_prefix *pprefix;
2496 const char *const file_suffix =
2497 ((mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "");
2498 struct prefix_list *pl;
2499 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1;
2501 #ifdef DEFAULT_ASSEMBLER
2502 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2503 return xstrdup (DEFAULT_ASSEMBLER);
2506 #ifdef DEFAULT_LINKER
2507 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2508 return xstrdup (DEFAULT_LINKER);
2512 len += strlen (machine_suffix);
2514 temp = xmalloc (len);
2516 /* Determine the filename to execute (special case for absolute paths). */
2518 if (IS_ABSOLUTE_PATHNAME (name))
2520 if (access (name, mode) == 0)
2522 strcpy (temp, name);
2527 for (pl = pprefix->plist; pl; pl = pl->next)
2531 /* Some systems have a suffix for executable files.
2532 So try appending that first. */
2533 if (file_suffix[0] != 0)
2535 strcpy (temp, pl->prefix);
2536 strcat (temp, machine_suffix);
2537 strcat (temp, name);
2538 strcat (temp, file_suffix);
2539 if (access_check (temp, mode) == 0)
2541 if (pl->used_flag_ptr != 0)
2542 *pl->used_flag_ptr = 1;
2547 /* Now try just the name. */
2548 strcpy (temp, pl->prefix);
2549 strcat (temp, machine_suffix);
2550 strcat (temp, name);
2551 if (access_check (temp, mode) == 0)
2553 if (pl->used_flag_ptr != 0)
2554 *pl->used_flag_ptr = 1;
2559 /* Certain prefixes are tried with just the machine type,
2560 not the version. This is used for finding as, ld, etc. */
2561 if (just_machine_suffix && pl->require_machine_suffix == 2)
2563 /* Some systems have a suffix for executable files.
2564 So try appending that first. */
2565 if (file_suffix[0] != 0)
2567 strcpy (temp, pl->prefix);
2568 strcat (temp, just_machine_suffix);
2569 strcat (temp, name);
2570 strcat (temp, file_suffix);
2571 if (access_check (temp, mode) == 0)
2573 if (pl->used_flag_ptr != 0)
2574 *pl->used_flag_ptr = 1;
2579 strcpy (temp, pl->prefix);
2580 strcat (temp, just_machine_suffix);
2581 strcat (temp, name);
2582 if (access_check (temp, mode) == 0)
2584 if (pl->used_flag_ptr != 0)
2585 *pl->used_flag_ptr = 1;
2590 /* Certain prefixes can't be used without the machine suffix
2591 when the machine or version is explicitly specified. */
2592 if (! pl->require_machine_suffix)
2594 /* Some systems have a suffix for executable files.
2595 So try appending that first. */
2596 if (file_suffix[0] != 0)
2598 strcpy (temp, pl->prefix);
2599 strcat (temp, name);
2600 strcat (temp, file_suffix);
2601 if (access_check (temp, mode) == 0)
2603 if (pl->used_flag_ptr != 0)
2604 *pl->used_flag_ptr = 1;
2609 strcpy (temp, pl->prefix);
2610 strcat (temp, name);
2611 if (access_check (temp, mode) == 0)
2613 if (pl->used_flag_ptr != 0)
2614 *pl->used_flag_ptr = 1;
2624 /* Ranking of prefixes in the sort list. -B prefixes are put before
2627 enum path_prefix_priority
2629 PREFIX_PRIORITY_B_OPT,
2630 PREFIX_PRIORITY_LAST
2633 /* Add an entry for PREFIX in PLIST. The PLIST is kept in assending
2634 order according to PRIORITY. Within each PRIORITY, new entries are
2637 If WARN is nonzero, we will warn if no file is found
2638 through this prefix. WARN should point to an int
2639 which will be set to 1 if this entry is used.
2641 COMPONENT is the value to be passed to update_path.
2643 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2644 the complete value of machine_suffix.
2645 2 means try both machine_suffix and just_machine_suffix. */
2648 add_prefix (pprefix, prefix, component, priority, require_machine_suffix, warn)
2649 struct path_prefix *pprefix;
2651 const char *component;
2652 /* enum prefix_priority */ int priority;
2653 int require_machine_suffix;
2656 struct prefix_list *pl, **prev;
2659 for (prev = &pprefix->plist;
2660 (*prev) != NULL && (*prev)->priority <= priority;
2661 prev = &(*prev)->next)
2664 /* Keep track of the longest prefix */
2666 prefix = update_path (prefix, component);
2667 len = strlen (prefix);
2668 if (len > pprefix->max_len)
2669 pprefix->max_len = len;
2671 pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
2672 pl->prefix = prefix;
2673 pl->require_machine_suffix = require_machine_suffix;
2674 pl->used_flag_ptr = warn;
2675 pl->priority = priority;
2679 /* Insert after PREV */
2684 /* Execute the command specified by the arguments on the current line of spec.
2685 When using pipes, this includes several piped-together commands
2686 with `|' between them.
2688 Return 0 if successful, -1 if failed. */
2694 int n_commands; /* # of command. */
2698 const char *prog; /* program name. */
2699 const char **argv; /* vector of args. */
2700 int pid; /* pid of process for this command. */
2703 struct command *commands; /* each command buffer with above info. */
2705 /* Count # of piped commands. */
2706 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2707 if (strcmp (argbuf[i], "|") == 0)
2710 /* Get storage for each command. */
2711 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2713 /* Split argbuf into its separate piped processes,
2714 and record info about each one.
2715 Also search for the programs that are to be run. */
2717 commands[0].prog = argbuf[0]; /* first command. */
2718 commands[0].argv = &argbuf[0];
2719 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK);
2722 commands[0].argv[0] = string;
2724 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2725 if (strcmp (argbuf[i], "|") == 0)
2726 { /* each command. */
2727 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2728 fatal ("-pipe not supported");
2730 argbuf[i] = 0; /* termination of command args. */
2731 commands[n_commands].prog = argbuf[i + 1];
2732 commands[n_commands].argv = &argbuf[i + 1];
2733 string = find_a_file (&exec_prefixes, commands[n_commands].prog, X_OK);
2735 commands[n_commands].argv[0] = string;
2739 argbuf[argbuf_index] = 0;
2741 /* If -v, print what we are about to do, and maybe query. */
2745 /* For help listings, put a blank line between sub-processes. */
2746 if (print_help_list)
2747 fputc ('\n', stderr);
2749 /* Print each piped command as a separate line. */
2750 for (i = 0; i < n_commands; i++)
2752 const char *const *j;
2754 if (verbose_only_flag)
2756 for (j = commands[i].argv; *j; j++)
2759 fprintf (stderr, " \"");
2760 for (p = *j; *p; ++p)
2762 if (*p == '"' || *p == '\\' || *p == '$')
2763 fputc ('\\', stderr);
2766 fputc ('"', stderr);
2770 for (j = commands[i].argv; *j; j++)
2771 fprintf (stderr, " %s", *j);
2773 /* Print a pipe symbol after all but the last command. */
2774 if (i + 1 != n_commands)
2775 fprintf (stderr, " |");
2776 fprintf (stderr, "\n");
2779 if (verbose_only_flag != 0)
2782 notice ("\nGo ahead? (y or n) ");
2786 while (getchar () != '\n')
2789 if (i != 'y' && i != 'Y')
2794 /* Run each piped subprocess. */
2796 for (i = 0; i < n_commands; i++)
2798 char *errmsg_fmt, *errmsg_arg;
2799 const char *string = commands[i].argv[0];
2801 /* For some bizarre reason, the second argument of execvp() is
2802 char *const *, not const char *const *. */
2803 commands[i].pid = pexecute (string, (char *const *) commands[i].argv,
2804 programname, temp_filename,
2805 &errmsg_fmt, &errmsg_arg,
2806 ((i == 0 ? PEXECUTE_FIRST : 0)
2807 | (i + 1 == n_commands ? PEXECUTE_LAST : 0)
2808 | (string == commands[i].prog
2809 ? PEXECUTE_SEARCH : 0)
2810 | (verbose_flag ? PEXECUTE_VERBOSE : 0)));
2812 if (commands[i].pid == -1)
2813 pfatal_pexecute (errmsg_fmt, errmsg_arg);
2815 if (string != commands[i].prog)
2816 free ((PTR) string);
2821 /* Wait for all the subprocesses to finish.
2822 We don't care what order they finish in;
2823 we know that N_COMMANDS waits will get them all.
2824 Ignore subprocesses that we don't know about,
2825 since they can be spawned by the process that exec'ed us. */
2829 #ifdef HAVE_GETRUSAGE
2831 double ut = 0.0, st = 0.0;
2834 for (i = 0; i < n_commands;)
2840 pid = pwait (commands[i].pid, &status, 0);
2844 #ifdef HAVE_GETRUSAGE
2847 /* getrusage returns the total resource usage of all children
2848 up to now. Copy the previous values into prus, get the
2849 current statistics, then take the difference. */
2852 getrusage (RUSAGE_CHILDREN, &rus);
2853 d.tv_sec = rus.ru_utime.tv_sec - prus.ru_utime.tv_sec;
2854 d.tv_usec = rus.ru_utime.tv_usec - prus.ru_utime.tv_usec;
2855 ut = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2857 d.tv_sec = rus.ru_stime.tv_sec - prus.ru_stime.tv_sec;
2858 d.tv_usec = rus.ru_stime.tv_usec - prus.ru_stime.tv_usec;
2859 st = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2863 for (j = 0; j < n_commands; j++)
2864 if (commands[j].pid == pid)
2867 if (WIFSIGNALED (status))
2870 /* SIGPIPE is a special case. It happens in -pipe mode
2871 when the compiler dies before the preprocessor is
2872 done, or the assembler dies before the compiler is
2873 done. There's generally been an error already, and
2874 this is just fallout. So don't generate another error
2875 unless we would otherwise have succeeded. */
2876 if (WTERMSIG (status) == SIGPIPE
2877 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2882 Internal error: %s (program %s)\n\
2883 Please submit a full bug report.\n\
2884 See %s for instructions.",
2885 strsignal (WTERMSIG (status)), commands[j].prog,
2890 else if (WIFEXITED (status)
2891 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2893 if (WEXITSTATUS (status) > greatest_status)
2894 greatest_status = WEXITSTATUS (status);
2897 #ifdef HAVE_GETRUSAGE
2898 if (report_times && ut + st != 0)
2899 notice ("# %s %.2f %.2f\n", commands[j].prog, ut, st);
2908 /* Find all the switches given to us
2909 and make a vector describing them.
2910 The elements of the vector are strings, one per switch given.
2911 If a switch uses following arguments, then the `part1' field
2912 is the switch itself and the `args' field
2913 is a null-terminated vector containing the following arguments.
2914 The `live_cond' field is:
2916 1 if the switch is true in a conditional spec,
2917 -1 if false (overridden by a later switch)
2918 -2 if this switch should be ignored (used in %{<S})
2919 The `validated' field is nonzero if any spec has looked at this switch;
2920 if it remains zero at the end of the run, it must be meaningless. */
2923 #define SWITCH_FALSE -1
2924 #define SWITCH_IGNORE -2
2925 #define SWITCH_LIVE 1
2932 unsigned char validated;
2933 unsigned char ordering;
2936 static struct switchstr *switches;
2938 static int n_switches;
2943 const char *language;
2946 /* Also a vector of input files specified. */
2948 static struct infile *infiles;
2952 /* This counts the number of libraries added by lang_specific_driver, so that
2953 we can tell if there were any user supplied any files or libraries. */
2955 static int added_libraries;
2957 /* And a vector of corresponding output files is made up later. */
2959 const char **outfiles;
2961 /* Used to track if none of the -B paths are used. */
2964 /* Used to track if standard path isn't used and -b or -V is specified. */
2965 static int warn_std;
2967 /* Gives value to pass as "warn" to add_prefix for standard prefixes. */
2968 static int *warn_std_ptr = 0;
2970 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2972 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2973 is true if we should look for an executable suffix. DO_OBJ
2974 is true if we should look for an object suffix. */
2977 convert_filename (name, do_exe, do_obj)
2979 int do_exe ATTRIBUTE_UNUSED;
2980 int do_obj ATTRIBUTE_UNUSED;
2982 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2990 len = strlen (name);
2992 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2993 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2994 if (do_obj && len > 2
2995 && name[len - 2] == '.'
2996 && name[len - 1] == 'o')
2998 obstack_grow (&obstack, name, len - 2);
2999 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
3000 name = obstack_finish (&obstack);
3004 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3005 /* If there is no filetype, make it the executable suffix (which includes
3006 the "."). But don't get confused if we have just "-o". */
3007 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
3010 for (i = len - 1; i >= 0; i--)
3011 if (IS_DIR_SEPARATOR (name[i]))
3014 for (i++; i < len; i++)
3018 obstack_grow (&obstack, name, len);
3019 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
3020 strlen (TARGET_EXECUTABLE_SUFFIX));
3021 name = obstack_finish (&obstack);
3028 /* Display the command line switches accepted by gcc. */
3032 printf (_("Usage: %s [options] file...\n"), programname);
3033 fputs (_("Options:\n"), stdout);
3035 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
3036 fputs (_(" --help Display this information\n"), stdout);
3037 fputs (_(" --target-help Display target specific command line options\n"), stdout);
3039 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
3040 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
3041 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
3042 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
3043 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
3044 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
3045 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
3046 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
3047 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
3049 -print-multi-lib Display the mapping between command line options and\n\
3050 multiple library search directories\n"), stdout);
3051 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3052 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3053 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3054 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3055 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3056 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3057 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3058 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3059 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3060 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3061 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
3062 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
3063 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3064 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3065 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3066 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3067 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3068 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3070 -x <language> Specify the language of the following input files\n\
3071 Permissable languages include: c c++ assembler none\n\
3072 'none' means revert to the default behavior of\n\
3073 guessing the language based on the file's extension\n\
3077 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3078 passed on to the various sub-processes invoked by %s. In order to pass\n\
3079 other options on to these processes the -W<letter> options must be used.\n\
3082 /* The rest of the options are displayed by invocations of the various
3087 add_preprocessor_option (option, len)
3091 n_preprocessor_options++;
3093 if (! preprocessor_options)
3094 preprocessor_options
3095 = (char **) xmalloc (n_preprocessor_options * sizeof (char *));
3097 preprocessor_options
3098 = (char **) xrealloc (preprocessor_options,
3099 n_preprocessor_options * sizeof (char *));
3101 preprocessor_options [n_preprocessor_options - 1] =
3102 save_string (option, len);
3106 add_assembler_option (option, len)
3110 n_assembler_options++;
3112 if (! assembler_options)
3114 = (char **) xmalloc (n_assembler_options * sizeof (char *));
3117 = (char **) xrealloc (assembler_options,
3118 n_assembler_options * sizeof (char *));
3120 assembler_options [n_assembler_options - 1] = save_string (option, len);
3124 add_linker_option (option, len)
3130 if (! linker_options)
3132 = (char **) xmalloc (n_linker_options * sizeof (char *));
3135 = (char **) xrealloc (linker_options,
3136 n_linker_options * sizeof (char *));
3138 linker_options [n_linker_options - 1] = save_string (option, len);
3141 /* Create the vector `switches' and its contents.
3142 Store its length in `n_switches'. */
3145 process_command (argc, argv)
3147 const char *const *argv;
3152 const char *spec_lang = 0;
3153 int last_language_n_infiles;
3156 int lang_n_infiles = 0;
3157 #ifdef MODIFY_TARGET_NAME
3158 int is_modify_target_name;
3162 GET_ENV_PATH_LIST (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3166 added_libraries = 0;
3168 /* Figure compiler version from version string. */
3170 compiler_version = temp1 = xstrdup (version_string);
3172 for (; *temp1; ++temp1)
3181 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3182 see if we can create it from the pathname specified in argv[0]. */
3185 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3186 if (!gcc_exec_prefix)
3188 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
3189 standard_exec_prefix);
3190 if (gcc_exec_prefix)
3191 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3195 if (gcc_exec_prefix)
3197 int len = strlen (gcc_exec_prefix);
3199 if (len > (int) sizeof ("/lib/gcc-lib/") - 1
3200 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3202 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc-lib/") + 1;
3203 if (IS_DIR_SEPARATOR (*temp)
3204 && strncmp (temp + 1, "lib", 3) == 0
3205 && IS_DIR_SEPARATOR (temp[4])
3206 && strncmp (temp + 5, "gcc-lib", 7) == 0)
3207 len -= sizeof ("/lib/gcc-lib/") - 1;
3210 set_std_prefix (gcc_exec_prefix, len);
3211 add_prefix (&exec_prefixes, gcc_exec_prefix, "GCC",
3212 PREFIX_PRIORITY_LAST, 0, NULL);
3213 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3214 PREFIX_PRIORITY_LAST, 0, NULL);
3217 /* COMPILER_PATH and LIBRARY_PATH have values
3218 that are lists of directory names with colons. */
3220 GET_ENV_PATH_LIST (temp, "COMPILER_PATH");
3223 const char *startp, *endp;
3224 char *nstore = (char *) alloca (strlen (temp) + 3);
3226 startp = endp = temp;
3229 if (*endp == PATH_SEPARATOR || *endp == 0)
3231 strncpy (nstore, startp, endp - startp);
3233 strcpy (nstore, concat (".", dir_separator_str, NULL));
3234 else if (!IS_DIR_SEPARATOR (endp[-1]))
3236 nstore[endp - startp] = DIR_SEPARATOR;
3237 nstore[endp - startp + 1] = 0;
3240 nstore[endp - startp] = 0;
3241 add_prefix (&exec_prefixes, nstore, 0,
3242 PREFIX_PRIORITY_LAST, 0, NULL);
3243 add_prefix (&include_prefixes,
3244 concat (nstore, "include", NULL),
3245 0, PREFIX_PRIORITY_LAST, 0, NULL);
3248 endp = startp = endp + 1;
3255 GET_ENV_PATH_LIST (temp, LIBRARY_PATH_ENV);
3256 if (temp && *cross_compile == '0')
3258 const char *startp, *endp;
3259 char *nstore = (char *) alloca (strlen (temp) + 3);
3261 startp = endp = temp;
3264 if (*endp == PATH_SEPARATOR || *endp == 0)
3266 strncpy (nstore, startp, endp - startp);
3268 strcpy (nstore, concat (".", dir_separator_str, NULL));
3269 else if (!IS_DIR_SEPARATOR (endp[-1]))
3271 nstore[endp - startp] = DIR_SEPARATOR;
3272 nstore[endp - startp + 1] = 0;
3275 nstore[endp - startp] = 0;
3276 add_prefix (&startfile_prefixes, nstore, NULL,
3277 PREFIX_PRIORITY_LAST, 0, NULL);
3280 endp = startp = endp + 1;
3287 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3288 GET_ENV_PATH_LIST (temp, "LPATH");
3289 if (temp && *cross_compile == '0')
3291 const char *startp, *endp;
3292 char *nstore = (char *) alloca (strlen (temp) + 3);
3294 startp = endp = temp;
3297 if (*endp == PATH_SEPARATOR || *endp == 0)
3299 strncpy (nstore, startp, endp - startp);
3301 strcpy (nstore, concat (".", dir_separator_str, NULL));
3302 else if (!IS_DIR_SEPARATOR (endp[-1]))
3304 nstore[endp - startp] = DIR_SEPARATOR;
3305 nstore[endp - startp + 1] = 0;
3308 nstore[endp - startp] = 0;
3309 add_prefix (&startfile_prefixes, nstore, NULL,
3310 PREFIX_PRIORITY_LAST, 0, NULL);
3313 endp = startp = endp + 1;
3320 /* Convert new-style -- options to old-style. */
3321 translate_options (&argc, &argv);
3323 /* Do language-specific adjustment/addition of flags. */
3324 lang_specific_driver (&argc, &argv, &added_libraries);
3326 /* Scan argv twice. Here, the first time, just count how many switches
3327 there will be in their vector, and how many input files in theirs.
3328 Also parse any switches that determine the configuration name, such as -b.
3329 Here we also parse the switches that cc itself uses (e.g. -v). */
3331 for (i = 1; i < argc; i++)
3333 if (! strcmp (argv[i], "-dumpspecs"))
3335 struct spec_list *sl;
3337 for (sl = specs; sl; sl = sl->next)
3338 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3339 if (link_command_spec)
3340 printf ("*link_command:\n%s\n\n", link_command_spec);
3343 else if (! strcmp (argv[i], "-dumpversion"))
3345 printf ("%s\n", spec_version);
3348 else if (! strcmp (argv[i], "-dumpmachine"))
3350 printf ("%s\n", spec_machine);
3353 else if (strcmp (argv[i], "-fhelp") == 0)
3355 /* translate_options () has turned --help into -fhelp. */
3356 print_help_list = 1;
3358 /* We will be passing a dummy file on to the sub-processes. */
3362 /* CPP driver cannot obtain switch from cc1_options. */
3364 add_preprocessor_option ("--help", 6);
3365 add_assembler_option ("--help", 6);
3366 add_linker_option ("--help", 6);
3368 else if (strcmp (argv[i], "-ftarget-help") == 0)
3370 /* translate_options() has turned --target-help into -ftarget-help. */
3371 target_help_flag = 1;
3373 /* We will be passing a dummy file on to the sub-processes. */
3377 /* CPP driver cannot obtain switch from cc1_options. */
3379 add_preprocessor_option ("--target-help", 13);
3380 add_assembler_option ("--target-help", 13);
3381 add_linker_option ("--target-help", 13);
3383 else if (! strcmp (argv[i], "-pass-exit-codes"))
3385 pass_exit_codes = 1;
3388 else if (! strcmp (argv[i], "-print-search-dirs"))
3389 print_search_dirs = 1;
3390 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3391 print_file_name = "libgcc.a";
3392 else if (! strncmp (argv[i], "-print-file-name=", 17))
3393 print_file_name = argv[i] + 17;
3394 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3395 print_prog_name = argv[i] + 17;
3396 else if (! strcmp (argv[i], "-print-multi-lib"))
3397 print_multi_lib = 1;
3398 else if (! strcmp (argv[i], "-print-multi-directory"))
3399 print_multi_directory = 1;
3400 else if (! strncmp (argv[i], "-Wa,", 4))
3403 /* Pass the rest of this option to the assembler. */
3405 /* Split the argument at commas. */
3407 for (j = 4; argv[i][j]; j++)
3408 if (argv[i][j] == ',')
3410 add_assembler_option (argv[i] + prev, j - prev);
3414 /* Record the part after the last comma. */
3415 add_assembler_option (argv[i] + prev, j - prev);
3417 else if (! strncmp (argv[i], "-Wp,", 4))
3420 /* Pass the rest of this option to the preprocessor. */
3422 /* Split the argument at commas. */
3424 for (j = 4; argv[i][j]; j++)
3425 if (argv[i][j] == ',')
3427 add_preprocessor_option (argv[i] + prev, j - prev);
3431 /* Record the part after the last comma. */
3432 add_preprocessor_option (argv[i] + prev, j - prev);
3434 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3435 /* The +e options to the C++ front-end. */
3437 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3440 /* Split the argument at commas. */
3441 for (j = 3; argv[i][j]; j++)
3442 n_infiles += (argv[i][j] == ',');
3444 else if (strcmp (argv[i], "-Xlinker") == 0)
3447 fatal ("argument to `-Xlinker' is missing");
3452 else if (strcmp (argv[i], "-l") == 0)
3455 fatal ("argument to `-l' is missing");
3460 else if (strncmp (argv[i], "-l", 2) == 0)
3462 else if (strcmp (argv[i], "-save-temps") == 0)
3464 save_temps_flag = 1;
3467 else if (strcmp (argv[i], "-specs") == 0)
3469 struct user_specs *user = (struct user_specs *)
3470 xmalloc (sizeof (struct user_specs));
3472 fatal ("argument to `-specs' is missing");
3474 user->next = (struct user_specs *) 0;
3475 user->filename = argv[i];
3476 if (user_specs_tail)
3477 user_specs_tail->next = user;
3479 user_specs_head = user;
3480 user_specs_tail = user;
3482 else if (strncmp (argv[i], "-specs=", 7) == 0)
3484 struct user_specs *user = (struct user_specs *)
3485 xmalloc (sizeof (struct user_specs));
3486 if (strlen (argv[i]) == 7)
3487 fatal ("argument to `-specs=' is missing");
3489 user->next = (struct user_specs *) 0;
3490 user->filename = argv[i] + 7;
3491 if (user_specs_tail)
3492 user_specs_tail->next = user;
3494 user_specs_head = user;
3495 user_specs_tail = user;
3497 else if (strcmp (argv[i], "-time") == 0)
3499 else if (strcmp (argv[i], "-###") == 0)
3501 /* This is similar to -v except that there is no execution
3502 of the commands and the echoed arguments are quoted. It
3503 is intended for use in shell scripts to capture the
3504 driver-generated command line. */
3505 verbose_only_flag++;
3508 else if (argv[i][0] == '-' && argv[i][1] != 0)
3510 const char *p = &argv[i][1];
3517 if (p[1] == 0 && i + 1 == argc)
3518 fatal ("argument to `-b' is missing");
3520 spec_machine = argv[++i];
3522 spec_machine = p + 1;
3524 warn_std_ptr = &warn_std;
3532 if (p[1] == 0 && i + 1 == argc)
3533 fatal ("argument to `-B' is missing");
3539 len = strlen (value);
3541 /* Catch the case where the user has forgotten to append a
3542 directory separator to the path. Note, they may be using
3543 -B to add an executable name prefix, eg "i386-elf-", in
3544 order to distinguish between multiple installations of
3545 GCC in the same directory. Hence we must check to see
3546 if appending a directory separator actually makes a
3547 valid directory name. */
3548 if (! IS_DIR_SEPARATOR (value [len - 1])
3549 && is_directory (value, "", 0))
3551 char *tmp = xmalloc (len + 2);
3552 strcpy (tmp, value);
3553 tmp[len] = DIR_SEPARATOR;
3558 /* As a kludge, if the arg is "[foo/]stageN/", just
3559 add "[foo/]include" to the include prefix. */
3562 && (IS_DIR_SEPARATOR (value[len - 8]))))
3563 && strncmp (value + len - 7, "stage", 5) == 0
3564 && ISDIGIT (value[len - 2])
3565 && (IS_DIR_SEPARATOR (value[len - 1])))
3568 add_prefix (&include_prefixes, "include", NULL,
3569 PREFIX_PRIORITY_B_OPT, 0, NULL);
3572 char * string = xmalloc (len + 1);
3574 strncpy (string, value, len - 7);
3575 strcpy (string + len - 7, "include");
3576 add_prefix (&include_prefixes, string, NULL,
3577 PREFIX_PRIORITY_B_OPT, 0, NULL);
3581 add_prefix (&exec_prefixes, value, NULL,
3582 PREFIX_PRIORITY_B_OPT, 0, &warn_B);
3583 add_prefix (&startfile_prefixes, value, NULL,
3584 PREFIX_PRIORITY_B_OPT, 0, &warn_B);
3585 add_prefix (&include_prefixes, concat (value, "include", NULL),
3586 NULL, PREFIX_PRIORITY_B_OPT, 0, NULL);
3591 case 'v': /* Print our subcommands and print versions. */
3593 /* If they do anything other than exactly `-v', don't set
3594 verbose_flag; rather, continue on to give the error. */
3602 if (p[1] == 0 && i + 1 == argc)
3603 fatal ("argument to `-V' is missing");
3605 spec_version = argv[++i];
3607 spec_version = p + 1;
3608 compiler_version = spec_version;
3609 warn_std_ptr = &warn_std;
3611 /* Validate the version number. Use the same checks
3612 done when inserting it into a spec.
3614 The format of the version string is
3615 ([^0-9]*-)?[0-9]+[.][0-9]+([.][0-9]+)?([- ].*)? */
3617 const char *v = compiler_version;
3619 /* Ignore leading non-digits. i.e. "foo-" in "foo-2.7.2". */
3620 while (! ISDIGIT (*v))
3623 if (v > compiler_version && v[-1] != '-')
3624 fatal ("invalid version number format");
3626 /* Set V after the first period. */
3627 while (ISDIGIT (*v))
3631 fatal ("invalid version number format");
3634 while (ISDIGIT (*v))
3637 if (*v != 0 && *v != ' ' && *v != '.' && *v != '-')
3638 fatal ("invalid version number format");
3654 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3659 /* Forward scan, just in case -S or -c is specified
3666 if (argv[j][0] == '-')
3668 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
3674 else if ((skip = SWITCH_TAKES_ARG (argv[j][1])))
3675 j += skip - (argv[j][2] != 0);
3676 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1)))
3683 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3685 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0);
3687 argv[i] = convert_filename (argv[i], ! have_c, 0);
3694 #ifdef MODIFY_TARGET_NAME
3695 is_modify_target_name = 0;
3698 j < sizeof modify_target / sizeof modify_target[0]; j++)
3699 if (! strcmp (argv[i], modify_target[j].sw))
3702 = (char *) xmalloc (strlen (modify_target[j].str)
3703 + strlen (spec_machine));
3706 int made_addition = 0;
3708 is_modify_target_name = 1;
3709 for (p = spec_machine, q = new_name; *p != 0; )
3711 if (modify_target[j].add_del == DELETE
3712 && (! strncmp (q, modify_target[j].str,
3713 strlen (modify_target[j].str))))
3714 p += strlen (modify_target[j].str);
3715 else if (modify_target[j].add_del == ADD
3716 && ! made_addition && *p == '-')
3718 for (r = modify_target[j].str; *r != 0; )
3726 spec_machine = new_name;
3729 if (is_modify_target_name)
3735 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
3736 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
3737 else if (WORD_SWITCH_TAKES_ARG (p))
3738 i += WORD_SWITCH_TAKES_ARG (p);
3748 if (have_c && have_o && lang_n_infiles > 1)
3749 fatal ("cannot specify -o with -c or -S and multiple compilations");
3751 /* Set up the search paths before we go looking for config files. */
3753 /* These come before the md prefixes so that we will find gcc's subcommands
3754 (such as cpp) rather than those of the host system. */
3755 /* Use 2 as fourth arg meaning try just the machine as a suffix,
3756 as well as trying the machine and the version. */
3758 add_prefix (&exec_prefixes, standard_exec_prefix, "GCC",
3759 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3760 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3761 PREFIX_PRIORITY_LAST, 2, warn_std_ptr);
3762 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS",
3763 PREFIX_PRIORITY_LAST, 2, warn_std_ptr);
3766 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3767 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3768 add_prefix (&startfile_prefixes, standard_exec_prefix_1, "BINUTILS",
3769 PREFIX_PRIORITY_LAST, 1, warn_std_ptr);
3771 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3772 dir_separator_str, NULL);
3774 /* If tooldir is relative, base it on exec_prefixes. A relative
3775 tooldir lets us move the installed tree as a unit.
3777 If GCC_EXEC_PREFIX is defined, then we want to add two relative
3778 directories, so that we can search both the user specified directory
3779 and the standard place. */
3781 if (!IS_ABSOLUTE_PATHNAME (tooldir_prefix))
3783 if (gcc_exec_prefix)
3785 char *gcc_exec_tooldir_prefix
3786 = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
3787 spec_version, dir_separator_str, tooldir_prefix, NULL);
3789 add_prefix (&exec_prefixes,
3790 concat (gcc_exec_tooldir_prefix, "bin",
3791 dir_separator_str, NULL),
3792 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
3793 add_prefix (&startfile_prefixes,
3794 concat (gcc_exec_tooldir_prefix, "lib",
3795 dir_separator_str, NULL),
3796 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
3799 tooldir_prefix = concat (standard_exec_prefix, spec_machine,
3800 dir_separator_str, spec_version,
3801 dir_separator_str, tooldir_prefix, NULL);
3804 add_prefix (&exec_prefixes,
3805 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3806 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
3807 add_prefix (&startfile_prefixes,
3808 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3809 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
3811 /* More prefixes are enabled in main, after we read the specs file
3812 and determine whether this is cross-compilation or not. */
3814 /* Then create the space for the vectors and scan again. */
3816 switches = ((struct switchstr *)
3817 xmalloc ((n_switches + 1) * sizeof (struct switchstr)));
3818 infiles = (struct infile *) xmalloc ((n_infiles + 1) * sizeof (struct infile));
3821 last_language_n_infiles = -1;
3823 /* This, time, copy the text of each switch and store a pointer
3824 to the copy in the vector of switches.
3825 Store all the infiles in their vector. */
3827 for (i = 1; i < argc; i++)
3829 /* Just skip the switches that were handled by the preceding loop. */
3830 #ifdef MODIFY_TARGET_NAME
3831 is_modify_target_name = 0;
3833 for (j = 0; j < sizeof modify_target / sizeof modify_target[0]; j++)
3834 if (! strcmp (argv[i], modify_target[j].sw))
3835 is_modify_target_name = 1;
3837 if (is_modify_target_name)
3841 if (! strncmp (argv[i], "-Wa,", 4))
3843 else if (! strncmp (argv[i], "-Wp,", 4))
3845 else if (! strcmp (argv[i], "-pass-exit-codes"))
3847 else if (! strcmp (argv[i], "-print-search-dirs"))
3849 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3851 else if (! strncmp (argv[i], "-print-file-name=", 17))
3853 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3855 else if (! strcmp (argv[i], "-print-multi-lib"))
3857 else if (! strcmp (argv[i], "-print-multi-directory"))
3859 else if (! strcmp (argv[i], "-ftarget-help"))
3861 else if (! strcmp (argv[i], "-fhelp"))
3863 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3865 /* Compensate for the +e options to the C++ front-end;
3866 they're there simply for cfront call-compatibility. We do
3867 some magic in default_compilers to pass them down properly.
3868 Note we deliberately start at the `+' here, to avoid passing
3869 -e0 or -e1 down into the linker. */
3870 switches[n_switches].part1 = &argv[i][0];
3871 switches[n_switches].args = 0;
3872 switches[n_switches].live_cond = SWITCH_OK;
3873 switches[n_switches].validated = 0;
3876 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3879 /* Split the argument at commas. */
3881 for (j = 4; argv[i][j]; j++)
3882 if (argv[i][j] == ',')
3884 infiles[n_infiles].language = "*";
3885 infiles[n_infiles++].name
3886 = save_string (argv[i] + prev, j - prev);
3889 /* Record the part after the last comma. */
3890 infiles[n_infiles].language = "*";
3891 infiles[n_infiles++].name = argv[i] + prev;
3893 else if (strcmp (argv[i], "-Xlinker") == 0)
3895 infiles[n_infiles].language = "*";
3896 infiles[n_infiles++].name = argv[++i];
3898 else if (strcmp (argv[i], "-l") == 0)
3899 { /* POSIX allows separation of -l and the lib arg;
3900 canonicalize by concatenating -l with its arg */
3901 infiles[n_infiles].language = "*";
3902 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL);
3904 else if (strncmp (argv[i], "-l", 2) == 0)
3906 infiles[n_infiles].language = "*";
3907 infiles[n_infiles++].name = argv[i];
3909 else if (strcmp (argv[i], "-specs") == 0)
3911 else if (strncmp (argv[i], "-specs=", 7) == 0)
3913 else if (strcmp (argv[i], "-time") == 0)
3915 else if ((save_temps_flag || report_times)
3916 && strcmp (argv[i], "-pipe") == 0)
3918 /* -save-temps overrides -pipe, so that temp files are produced */
3919 if (save_temps_flag)
3920 error ("warning: -pipe ignored because -save-temps specified");
3921 /* -time overrides -pipe because we can't get correct stats when
3922 multiple children are running at once. */
3923 else if (report_times)
3924 error ("warning: -pipe ignored because -time specified");
3926 else if (strcmp (argv[i], "-###") == 0)
3928 else if (argv[i][0] == '-' && argv[i][1] != 0)
3930 const char *p = &argv[i][1];
3935 if (p[1] == 0 && i + 1 == argc)
3936 fatal ("argument to `-x' is missing");
3938 spec_lang = argv[++i];
3941 if (! strcmp (spec_lang, "none"))
3942 /* Suppress the warning if -xnone comes after the last input
3943 file, because alternate command interfaces like g++ might
3944 find it useful to place -xnone after each input file. */
3947 last_language_n_infiles = n_infiles;
3950 switches[n_switches].part1 = p;
3951 /* Deal with option arguments in separate argv elements. */
3952 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
3953 || WORD_SWITCH_TAKES_ARG (p))
3956 int n_args = WORD_SWITCH_TAKES_ARG (p);
3960 /* Count only the option arguments in separate argv elements. */
3961 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
3963 if (i + n_args >= argc)
3964 fatal ("argument to `-%s' is missing", p);
3965 switches[n_switches].args
3966 = (const char **) xmalloc ((n_args + 1) * sizeof(const char *));
3968 switches[n_switches].args[j++] = argv[++i];
3969 /* Null-terminate the vector. */
3970 switches[n_switches].args[j] = 0;
3972 else if (strchr (switches_need_spaces, c))
3974 /* On some systems, ld cannot handle some options without
3975 a space. So split the option from its argument. */
3976 char *part1 = (char *) xmalloc (2);
3980 switches[n_switches].part1 = part1;
3981 switches[n_switches].args
3982 = (const char **) xmalloc (2 * sizeof (const char *));
3983 switches[n_switches].args[0] = xstrdup (p+1);
3984 switches[n_switches].args[1] = 0;
3987 switches[n_switches].args = 0;
3989 switches[n_switches].live_cond = SWITCH_OK;
3990 switches[n_switches].validated = 0;
3991 switches[n_switches].ordering = 0;
3992 /* These are always valid, since gcc.c itself understands it. */
3993 if (!strcmp (p, "save-temps")
3994 || !strcmp (p, "static-libgcc")
3995 || !strcmp (p, "shared-libgcc"))
3996 switches[n_switches].validated = 1;
3999 char ch = switches[n_switches].part1[0];
4000 if (ch == 'V' || ch == 'b' || ch == 'B')
4001 switches[n_switches].validated = 1;
4007 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4008 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
4011 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
4013 perror_with_name (argv[i]);
4018 infiles[n_infiles].language = spec_lang;
4019 infiles[n_infiles++].name = argv[i];
4024 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4025 error ("warning: `-x %s' after last input file has no effect", spec_lang);
4027 /* Ensure we only invoke each subprocess once. */
4028 if (target_help_flag || print_help_list)
4032 /* Create a dummy input file, so that we can pass --target-help on to
4033 the various sub-processes. */
4034 infiles[0].language = "c";
4035 infiles[0].name = "help-dummy";
4037 if (target_help_flag)
4039 switches[n_switches].part1 = "--target-help";
4040 switches[n_switches].args = 0;
4041 switches[n_switches].live_cond = SWITCH_OK;
4042 switches[n_switches].validated = 0;
4047 if (print_help_list)
4049 switches[n_switches].part1 = "--help";
4050 switches[n_switches].args = 0;
4051 switches[n_switches].live_cond = SWITCH_OK;
4052 switches[n_switches].validated = 0;
4058 switches[n_switches].part1 = 0;
4059 infiles[n_infiles].name = 0;
4062 /* Store switches not filtered out by %{<S} in spec in COLLECT_GCC_OPTIONS
4063 and place that in the environment. */
4066 set_collect_gcc_options ()
4071 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4073 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4074 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4077 for (i = 0; (int) i < n_switches; i++)
4079 const char *const *args;
4082 obstack_grow (&collect_obstack, " ", 1);
4086 /* Ignore elided switches. */
4087 if (switches[i].live_cond == SWITCH_IGNORE)
4090 obstack_grow (&collect_obstack, "'-", 2);
4091 q = switches[i].part1;
4092 while ((p = strchr (q, '\'')))
4094 obstack_grow (&collect_obstack, q, p - q);
4095 obstack_grow (&collect_obstack, "'\\''", 4);
4098 obstack_grow (&collect_obstack, q, strlen (q));
4099 obstack_grow (&collect_obstack, "'", 1);
4101 for (args = switches[i].args; args && *args; args++)
4103 obstack_grow (&collect_obstack, " '", 2);
4105 while ((p = strchr (q, '\'')))
4107 obstack_grow (&collect_obstack, q, p - q);
4108 obstack_grow (&collect_obstack, "'\\''", 4);
4111 obstack_grow (&collect_obstack, q, strlen (q));
4112 obstack_grow (&collect_obstack, "'", 1);
4115 obstack_grow (&collect_obstack, "\0", 1);
4116 putenv (obstack_finish (&collect_obstack));
4119 /* Process a spec string, accumulating and running commands. */
4121 /* These variables describe the input file name.
4122 input_file_number is the index on outfiles of this file,
4123 so that the output file name can be stored for later use by %o.
4124 input_basename is the start of the part of the input file
4125 sans all directory names, and basename_length is the number
4126 of characters starting there excluding the suffix .c or whatever. */
4128 const char *input_filename;
4129 static int input_file_number;
4130 size_t input_filename_length;
4131 static int basename_length;
4132 static int suffixed_basename_length;
4133 static const char *input_basename;
4134 static const char *input_suffix;
4135 static struct stat input_stat;
4136 static int input_stat_set;
4138 /* The compiler used to process the current input file. */
4139 static struct compiler *input_file_compiler;
4141 /* These are variables used within do_spec and do_spec_1. */
4143 /* Nonzero if an arg has been started and not yet terminated
4144 (with space, tab or newline). */
4145 static int arg_going;
4147 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4148 is a temporary file name. */
4149 static int delete_this_arg;
4151 /* Nonzero means %w has been seen; the next arg to be terminated
4152 is the output file name of this compilation. */
4153 static int this_is_output_file;
4155 /* Nonzero means %s has been seen; the next arg to be terminated
4156 is the name of a library file and we should try the standard
4157 search dirs for it. */
4158 static int this_is_library_file;
4160 /* Nonzero means that the input of this command is coming from a pipe. */
4161 static int input_from_pipe;
4163 /* Nonnull means substitute this for any suffix when outputting a switches
4165 static const char *suffix_subst;
4167 /* Process the spec SPEC and run the commands specified therein.
4168 Returns 0 if the spec is successfully processed; -1 if failed. */
4178 delete_this_arg = 0;
4179 this_is_output_file = 0;
4180 this_is_library_file = 0;
4181 input_from_pipe = 0;
4182 suffix_subst = NULL;
4184 value = do_spec_1 (spec, 0, NULL);
4186 /* Force out any unfinished command.
4187 If -pipe, this forces out the last command if it ended in `|'. */
4190 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4193 set_collect_gcc_options ();
4195 if (argbuf_index > 0)
4202 /* Process the sub-spec SPEC as a portion of a larger spec.
4203 This is like processing a whole spec except that we do
4204 not initialize at the beginning and we do not supply a
4205 newline by default at the end.
4206 INSWITCH nonzero means don't process %-sequences in SPEC;
4207 in this case, % is treated as an ordinary character.
4208 This is used while substituting switches.
4209 INSWITCH nonzero also causes SPC not to terminate an argument.
4211 Value is zero unless a line was finished
4212 and the command on that line reported an error. */
4215 do_spec_1 (spec, inswitch, soft_matched_part)
4218 const char *soft_matched_part;
4220 const char *p = spec;
4227 /* If substituting a switch, treat all chars like letters.
4228 Otherwise, NL, SPC, TAB and % are special. */
4229 switch (inswitch ? 'a' : c)
4232 /* End of line: finish any pending argument,
4233 then run the pending command if one has been started. */
4236 obstack_1grow (&obstack, 0);
4237 string = obstack_finish (&obstack);
4238 if (this_is_library_file)
4239 string = find_file (string);
4240 store_arg (string, delete_this_arg, this_is_output_file);
4241 if (this_is_output_file)
4242 outfiles[input_file_number] = string;
4246 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4248 for (i = 0; i < n_switches; i++)
4249 if (!strcmp (switches[i].part1, "pipe"))
4252 /* A `|' before the newline means use a pipe here,
4253 but only if -pipe was specified.
4254 Otherwise, execute now and don't pass the `|' as an arg. */
4257 input_from_pipe = 1;
4258 switches[i].validated = 1;
4265 set_collect_gcc_options ();
4267 if (argbuf_index > 0)
4273 /* Reinitialize for a new command, and for a new argument. */
4276 delete_this_arg = 0;
4277 this_is_output_file = 0;
4278 this_is_library_file = 0;
4279 input_from_pipe = 0;
4283 /* End any pending argument. */
4286 obstack_1grow (&obstack, 0);
4287 string = obstack_finish (&obstack);
4288 if (this_is_library_file)
4289 string = find_file (string);
4290 store_arg (string, delete_this_arg, this_is_output_file);
4291 if (this_is_output_file)
4292 outfiles[input_file_number] = string;
4296 obstack_1grow (&obstack, c);
4302 /* Space or tab ends an argument if one is pending. */
4305 obstack_1grow (&obstack, 0);
4306 string = obstack_finish (&obstack);
4307 if (this_is_library_file)
4308 string = find_file (string);
4309 store_arg (string, delete_this_arg, this_is_output_file);
4310 if (this_is_output_file)
4311 outfiles[input_file_number] = string;
4313 /* Reinitialize for a new argument. */
4315 delete_this_arg = 0;
4316 this_is_output_file = 0;
4317 this_is_library_file = 0;
4324 fatal ("invalid specification! Bug in cc");
4327 obstack_grow (&obstack, input_basename, basename_length);
4332 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4337 delete_this_arg = 2;
4340 /* Dump out the directories specified with LIBRARY_PATH,
4341 followed by the absolute directories
4342 that we search for startfiles. */
4345 struct prefix_list *pl = startfile_prefixes.plist;
4346 size_t bufsize = 100;
4347 char *buffer = (char *) xmalloc (bufsize);
4350 for (; pl; pl = pl->next)
4352 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4353 /* Used on systems which record the specified -L dirs
4354 and use them to search for dynamic linking. */
4355 /* Relative directories always come from -B,
4356 and it is better not to use them for searching
4357 at run time. In particular, stage1 loses. */
4358 if (!IS_ABSOLUTE_PATHNAME (pl->prefix))
4361 /* Try subdirectory if there is one. */
4362 if (multilib_dir != NULL)
4366 if (strlen (pl->prefix) + strlen (machine_suffix)
4368 bufsize = (strlen (pl->prefix)
4369 + strlen (machine_suffix)) * 2 + 1;
4370 buffer = (char *) xrealloc (buffer, bufsize);
4371 strcpy (buffer, pl->prefix);
4372 strcat (buffer, machine_suffix);
4373 if (is_directory (buffer, multilib_dir, 1))
4375 do_spec_1 ("-L", 0, NULL);
4376 #ifdef SPACE_AFTER_L_OPTION
4377 do_spec_1 (" ", 0, NULL);
4379 do_spec_1 (buffer, 1, NULL);
4380 do_spec_1 (multilib_dir, 1, NULL);
4381 /* Make this a separate argument. */
4382 do_spec_1 (" ", 0, NULL);
4385 if (!pl->require_machine_suffix)
4387 if (is_directory (pl->prefix, multilib_dir, 1))
4389 do_spec_1 ("-L", 0, NULL);
4390 #ifdef SPACE_AFTER_L_OPTION
4391 do_spec_1 (" ", 0, NULL);
4393 do_spec_1 (pl->prefix, 1, NULL);
4394 do_spec_1 (multilib_dir, 1, NULL);
4395 /* Make this a separate argument. */
4396 do_spec_1 (" ", 0, NULL);
4402 if (is_directory (pl->prefix, machine_suffix, 1))
4404 do_spec_1 ("-L", 0, NULL);
4405 #ifdef SPACE_AFTER_L_OPTION
4406 do_spec_1 (" ", 0, NULL);
4408 do_spec_1 (pl->prefix, 1, NULL);
4409 /* Remove slash from machine_suffix. */
4410 if (strlen (machine_suffix) >= bufsize)
4411 bufsize = strlen (machine_suffix) * 2 + 1;
4412 buffer = (char *) xrealloc (buffer, bufsize);
4413 strcpy (buffer, machine_suffix);
4414 idx = strlen (buffer);
4415 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4416 buffer[idx - 1] = 0;
4417 do_spec_1 (buffer, 1, NULL);
4418 /* Make this a separate argument. */
4419 do_spec_1 (" ", 0, NULL);
4422 if (!pl->require_machine_suffix)
4424 if (is_directory (pl->prefix, "", 1))
4426 do_spec_1 ("-L", 0, NULL);
4427 #ifdef SPACE_AFTER_L_OPTION
4428 do_spec_1 (" ", 0, NULL);
4430 /* Remove slash from pl->prefix. */
4431 if (strlen (pl->prefix) >= bufsize)
4432 bufsize = strlen (pl->prefix) * 2 + 1;
4433 buffer = (char *) xrealloc (buffer, bufsize);
4434 strcpy (buffer, pl->prefix);
4435 idx = strlen (buffer);
4436 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4437 buffer[idx - 1] = 0;
4438 do_spec_1 (buffer, 1, NULL);
4439 /* Make this a separate argument. */
4440 do_spec_1 (" ", 0, NULL);
4449 /* %efoo means report an error with `foo' as error message
4450 and don't execute any more commands for this file. */
4454 while (*p != 0 && *p != '\n')
4456 buf = (char *) alloca (p - q + 1);
4457 strncpy (buf, q, p - q);
4464 /* %nfoo means report an notice with `foo' on stderr. */
4468 while (*p != 0 && *p != '\n')
4470 buf = (char *) alloca (p - q + 1);
4471 strncpy (buf, q, p - q);
4473 notice ("%s\n", buf);
4483 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is defined,
4484 and it is not a directory, and it is writable, use it.
4485 Otherwise, fall through and treat this like any other
4488 if ((!save_temps_flag)
4489 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4490 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4492 obstack_grow (&obstack, HOST_BIT_BUCKET,
4493 strlen (HOST_BIT_BUCKET));
4494 delete_this_arg = 0;
4503 struct temp_name *t;
4505 const char *suffix = p;
4506 char *saved_suffix = NULL;
4508 while (*p == '.' || ISALPHA ((unsigned char) *p))
4510 suffix_length = p - suffix;
4511 if (p[0] == '%' && p[1] == 'O')
4514 /* We don't support extra suffix characters after %O. */
4515 if (*p == '.' || ISALPHA ((unsigned char) *p))
4517 if (suffix_length == 0)
4518 suffix = TARGET_OBJECT_SUFFIX;
4522 = (char *) xmalloc (suffix_length
4523 + strlen (TARGET_OBJECT_SUFFIX));
4524 strncpy (saved_suffix, suffix, suffix_length);
4525 strcpy (saved_suffix + suffix_length,
4526 TARGET_OBJECT_SUFFIX);
4528 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4531 /* If the input_filename has the same suffix specified
4532 for the %g, %u, or %U, and -save-temps is specified,
4533 we could end up using that file as an intermediate
4534 thus clobbering the user's source file (.e.g.,
4535 gcc -save-temps foo.s would clobber foo.s with the
4536 output of cpp0). So check for this condition and
4537 generate a temp file as the intermediate. */
4539 if (save_temps_flag)
4541 temp_filename_length = basename_length + suffix_length;
4542 temp_filename = alloca (temp_filename_length + 1);
4543 strncpy ((char *) temp_filename, input_basename, basename_length);
4544 strncpy ((char *) temp_filename + basename_length, suffix,
4546 *((char *) temp_filename + temp_filename_length) = '\0';
4547 if (strcmp (temp_filename, input_filename) != 0)
4549 struct stat st_temp;
4551 /* Note, set_input() resets input_stat_set to 0. */
4552 if (input_stat_set == 0)
4554 input_stat_set = stat (input_filename, &input_stat);
4555 if (input_stat_set >= 0)
4559 /* If we have the stat for the input_filename
4560 and we can do the stat for the temp_filename
4561 then the they could still refer to the same
4562 file if st_dev/st_ino's are the same. */
4564 if (input_stat_set != 1
4565 || stat (temp_filename, &st_temp) < 0
4566 || input_stat.st_dev != st_temp.st_dev
4567 || input_stat.st_ino != st_temp.st_ino)
4569 temp_filename = save_string (temp_filename,
4570 temp_filename_length + 1);
4571 obstack_grow (&obstack, temp_filename,
4572 temp_filename_length);
4579 /* See if we already have an association of %g/%u/%U and
4581 for (t = temp_names; t; t = t->next)
4582 if (t->length == suffix_length
4583 && strncmp (t->suffix, suffix, suffix_length) == 0
4584 && t->unique == (c != 'g'))
4587 /* Make a new association if needed. %u and %j
4589 if (t == 0 || c == 'u' || c == 'j')
4593 t = (struct temp_name *) xmalloc (sizeof (struct temp_name));
4594 t->next = temp_names;
4597 t->length = suffix_length;
4600 t->suffix = saved_suffix;
4601 saved_suffix = NULL;
4604 t->suffix = save_string (suffix, suffix_length);
4605 t->unique = (c != 'g');
4606 temp_filename = make_temp_file (t->suffix);
4607 temp_filename_length = strlen (temp_filename);
4608 t->filename = temp_filename;
4609 t->filename_length = temp_filename_length;
4613 free (saved_suffix);
4615 obstack_grow (&obstack, t->filename, t->filename_length);
4616 delete_this_arg = 1;
4622 obstack_grow (&obstack, input_filename, input_filename_length);
4628 struct prefix_list *pl = include_prefixes.plist;
4630 if (gcc_exec_prefix)
4632 do_spec_1 ("-iprefix", 1, NULL);
4633 /* Make this a separate argument. */
4634 do_spec_1 (" ", 0, NULL);
4635 do_spec_1 (gcc_exec_prefix, 1, NULL);
4636 do_spec_1 (" ", 0, NULL);
4639 for (; pl; pl = pl->next)
4641 do_spec_1 ("-isystem", 1, NULL);
4642 /* Make this a separate argument. */
4643 do_spec_1 (" ", 0, NULL);
4644 do_spec_1 (pl->prefix, 1, NULL);
4645 do_spec_1 (" ", 0, NULL);
4652 int max = n_infiles;
4653 max += lang_specific_extra_outfiles;
4655 for (i = 0; i < max; i++)
4657 store_arg (outfiles[i], 0, 0);
4662 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4667 this_is_library_file = 1;
4671 this_is_output_file = 1;
4676 int cur_index = argbuf_index;
4677 /* Handle the {...} following the %W. */
4680 p = handle_braces (p + 1);
4683 /* If any args were output, mark the last one for deletion
4685 if (argbuf_index != cur_index)
4686 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
4690 /* %x{OPTION} records OPTION for %X to output. */
4696 /* Skip past the option value and make a copy. */
4701 string = save_string (p1 + 1, p - p1 - 2);
4703 /* See if we already recorded this option. */
4704 for (i = 0; i < n_linker_options; i++)
4705 if (! strcmp (string, linker_options[i]))
4711 /* This option is new; add it. */
4712 add_linker_option (string, strlen (string));
4716 /* Dump out the options accumulated previously using %x. */
4718 for (i = 0; i < n_linker_options; i++)
4720 do_spec_1 (linker_options[i], 1, NULL);
4721 /* Make each accumulated option a separate argument. */
4722 do_spec_1 (" ", 0, NULL);
4726 /* Dump out the options accumulated previously using -Wa,. */
4728 for (i = 0; i < n_assembler_options; i++)
4730 do_spec_1 (assembler_options[i], 1, NULL);
4731 /* Make each accumulated option a separate argument. */
4732 do_spec_1 (" ", 0, NULL);
4736 /* Dump out the options accumulated previously using -Wp,. */
4738 for (i = 0; i < n_preprocessor_options; i++)
4740 do_spec_1 (preprocessor_options[i], 1, NULL);
4741 /* Make each accumulated option a separate argument. */
4742 do_spec_1 (" ", 0, NULL);
4746 /* Here are digits and numbers that just process
4747 a certain constant string as a spec. */
4750 value = do_spec_1 (cc1_spec, 0, NULL);
4756 value = do_spec_1 (cc1plus_spec, 0, NULL);
4762 value = do_spec_1 (asm_spec, 0, NULL);
4768 value = do_spec_1 (asm_final_spec, 0, NULL);
4774 value = do_spec_1 (signed_char_spec, 0, NULL);
4781 const char *const spec
4782 = (input_file_compiler->cpp_spec
4783 ? input_file_compiler->cpp_spec
4785 value = do_spec_1 (spec, 0, NULL);
4792 value = do_spec_1 (endfile_spec, 0, NULL);
4798 value = do_spec_1 (link_spec, 0, NULL);
4804 value = do_spec_1 (lib_spec, 0, NULL);
4810 value = do_spec_1 (libgcc_spec, 0, NULL);
4816 if (multilib_dir && strcmp (multilib_dir, ".") != 0)
4822 len = strlen (multilib_dir);
4823 obstack_blank (&obstack, len + 1);
4824 p = obstack_next_free (&obstack) - (len + 1);
4827 for (q = multilib_dir; *q ; ++q, ++p)
4828 *p = (IS_DIR_SEPARATOR (*q) ? '_' : *q);
4834 char *x = (char *) alloca (strlen (cpp_predefines) + 1);
4838 /* Copy all of the -D options in CPP_PREDEFINES into BUF. */
4842 if (! strncmp (y, "-D", 2))
4843 /* Copy the whole option. */
4844 while (*y && *y != ' ' && *y != '\t')
4846 else if (*y == ' ' || *y == '\t')
4847 /* Copy whitespace to the result. */
4849 /* Don't copy other options. */
4856 value = do_spec_1 (buf, 0, NULL);
4864 char *x = (char *) alloca (strlen (cpp_predefines) * 4 + 1);
4868 /* Copy all of CPP_PREDEFINES into BUF,
4869 but force them all into the reserved name space if they
4870 aren't already there. The reserved name space is all
4871 identifiers beginning with two underscores or with one
4872 underscore and a capital letter. We do the forcing by
4873 adding up to two underscores to the beginning and end
4874 of each symbol. e.g. mips, _mips, mips_, and _mips_ all
4879 if (! strncmp (y, "-D", 2))
4888 && ! ISUPPER ((unsigned char) *(y + 1))))
4890 /* Stick __ at front of macro name. */
4894 /* Arrange to stick __ at the end as well. */
4898 /* Copy the macro name. */
4899 while (*y && *y != '=' && *y != ' ' && *y != '\t')
4912 /* Copy the value given, if any. */
4913 while (*y && *y != ' ' && *y != '\t')
4916 else if (*y == ' ' || *y == '\t')
4917 /* Copy whitespace to the result. */
4919 /* Don't copy -A options */
4925 /* Copy all of CPP_PREDEFINES into BUF,
4926 but put __ after every -D. */
4930 if (! strncmp (y, "-D", 2))
4936 && ! ISUPPER ((unsigned char) *(y + 1))))
4938 /* Stick -D__ at front of macro name. */
4945 /* Copy the macro name. */
4946 while (*y && *y != '=' && *y != ' ' && *y != '\t')
4949 /* Copy the value given, if any. */
4950 while (*y && *y != ' ' && *y != '\t')
4955 /* Do not copy this macro - we have just done it before */
4956 while (*y && *y != ' ' && *y != '\t')
4960 else if (*y == ' ' || *y == '\t')
4961 /* Copy whitespace to the result. */
4963 /* Don't copy -A options. */
4969 /* Copy all of the -A options in CPP_PREDEFINES into BUF. */
4973 if (! strncmp (y, "-A", 2))
4974 /* Copy the whole option. */
4975 while (*y && *y != ' ' && *y != '\t')
4977 else if (*y == ' ' || *y == '\t')
4978 /* Copy whitespace to the result. */
4980 /* Don't copy other options. */
4987 value = do_spec_1 (buf, 0, NULL);
4994 value = do_spec_1 (startfile_spec, 0, NULL);
4999 /* Here we define characters other than letters and digits. */
5002 p = handle_braces (p);
5008 obstack_1grow (&obstack, '%');
5015 while (p[len] && p[len] != ' ' && p[len] != '%')
5017 suffix_subst = save_string (p - 1, len + 1);
5023 if (soft_matched_part)
5025 do_spec_1 (soft_matched_part, 1, NULL);
5026 do_spec_1 (" ", 0, NULL);
5029 /* Catch the case where a spec string contains something like
5030 '%{foo:%*}'. ie there is no * in the pattern on the left
5031 hand side of the :. */
5032 error ("spec failure: '%%*' has not been initialized by pattern match");
5035 /* Process a string found as the value of a spec given by name.
5036 This feature allows individual machine descriptions
5037 to add and use their own specs.
5038 %[...] modifies -D options the way %P does;
5039 %(...) uses the spec unmodified. */
5041 error ("warning: use of obsolete %%[ operator in specs");
5044 const char *name = p;
5045 struct spec_list *sl;
5048 /* The string after the S/P is the name of a spec that is to be
5050 while (*p && *p != ')' && *p != ']')
5053 /* See if it's in the list. */
5054 for (len = p - name, sl = specs; sl; sl = sl->next)
5055 if (sl->name_len == len && !strncmp (sl->name, name, len))
5057 name = *(sl->ptr_spec);
5059 notice ("Processing spec %c%s%c, which is '%s'\n",
5060 c, sl->name, (c == '(') ? ')' : ']', name);
5069 value = do_spec_1 (name, 0, NULL);
5075 char *x = (char *) alloca (strlen (name) * 2 + 1);
5077 const char *y = name;
5080 /* Copy all of NAME into BUF, but put __ after
5081 every -D and at the end of each arg. */
5084 if (! strncmp (y, "-D", 2))
5095 && (*y == ' ' || *y == '\t' || *y == '='
5096 || *y == '}' || *y == 0))
5109 value = do_spec_1 (buf, 0, NULL);
5115 /* Discard the closing paren or bracket. */
5123 int c1 = *p++; /* Select first or second version number. */
5124 const char *v = compiler_version;
5126 static const char zeroc = '0';
5128 /* The format of the version string is
5129 ([^0-9]*-)?[0-9]+[.][0-9]+([.][0-9]+)?([- ].*)? */
5131 /* Ignore leading non-digits. i.e. "foo-" in "foo-2.7.2". */
5132 while (! ISDIGIT (*v))
5134 if (v > compiler_version && v[-1] != '-')
5137 /* If desired, advance to second version number. */
5140 /* Set V after the first period. */
5141 while (ISDIGIT (*v))
5148 /* If desired, advance to third version number.
5149 But don't complain if it's not present */
5152 /* Set V after the second period. */
5153 while (ISDIGIT (*v))
5155 if ((*v != 0) && (*v != ' ') && (*v != '.') && (*v != '-'))
5161 /* Set Q at the next period or at the end. */
5163 while (ISDIGIT (*q))
5165 if (*q != 0 && q > v && *q != ' ' && *q != '.' && *q != '-')
5169 /* Put that part into the command. */
5170 obstack_grow (&obstack, v, q - v);
5172 /* Default to "0" */
5173 obstack_grow (&obstack, &zeroc, 1);
5179 if (input_from_pipe)
5180 do_spec_1 ("-", 0, NULL);
5184 error ("spec failure: unrecognized spec option '%c'", c);
5190 /* Backslash: treat next character as ordinary. */
5195 /* Ordinary character: put it into the current argument. */
5196 obstack_1grow (&obstack, c);
5200 /* End of string. */
5204 /* Return 0 if we call do_spec_1 and that returns -1. */
5210 const char *filter, *body = NULL, *endbody = NULL;
5212 int true_once = 0; /* If, in %{a|b:d}, at least one of a,b was seen. */
5215 int include_blanks = 1;
5216 int elide_switch = 0;
5221 /* A '^' after the open-brace means to not give blanks before args. */
5228 /* A `|' after the open-brace means,
5229 if the test fails, output a single minus sign rather than nothing.
5230 This is used in %{|!pipe:...}. */
5237 /* A `<' after the open-brace means that the switch should be
5238 removed from the command-line. */
5244 negate = suffix = 0;
5247 /* A `!' after the open-brace negates the condition:
5248 succeed if the specified switch is not present. */
5252 /* A `.' after the open-brace means test against the current suffix. */
5261 if (elide_switch && (negate || pipe_p || suffix))
5263 /* It doesn't make sense to mix elision with other flags. We
5264 could fatal() here, but the standard seems to be to abort. */
5270 while (*p != ':' && *p != '}' && *p != '|' && *p != '&')
5273 if (*p == '|' && (pipe_p || ordered))
5278 if (*p != '}' && *p != '&')
5294 fatal ("mismatched braces in specs");
5300 body = p, endbody = p + 1;
5305 int found = (input_suffix != 0
5306 && (long) strlen (input_suffix) == (long) (p - filter)
5307 && strncmp (input_suffix, filter, p - filter) == 0);
5313 && do_spec_1 (save_string (body, endbody-body-1), 0, NULL) < 0)
5316 else if (p[-1] == '*' && (p[0] == '}' || p[0] == '&'))
5318 /* Substitute all matching switches as separate args. */
5321 for (i = 0; i < n_switches; i++)
5322 if (!strncmp (switches[i].part1, filter, p - 1 - filter)
5323 && check_live_switch (i, p - 1 - filter))
5327 switches[i].live_cond = SWITCH_IGNORE;
5328 switches[i].validated = 1;
5331 ordered = 1, switches[i].ordering = 1;
5336 /* Test for presence of the specified switch. */
5340 /* If name specified ends in *, as in {x*:...},
5341 check for %* and handle that case. */
5342 if (p[-1] == '*' && !negate)
5345 const char *r = body;
5347 /* First see whether we have %*. */
5351 if (*r == '%' && r[1] == '*')
5355 /* If we do, handle that case. */
5358 /* Substitute all matching switches as separate args.
5359 But do this by substituting for %*
5360 in the text that follows the colon. */
5362 unsigned hard_match_len = p - filter - 1;
5363 char *string = save_string (body, endbody - body - 1);
5365 for (i = 0; i < n_switches; i++)
5366 if (!strncmp (switches[i].part1, filter, hard_match_len)
5367 && check_live_switch (i, -1))
5369 do_spec_1 (string, 0, &switches[i].part1[hard_match_len]);
5370 /* Pass any arguments this switch has. */
5371 give_switch (i, 1, 1);
5372 suffix_subst = NULL;
5375 /* We didn't match. Try again. */
5382 /* If name specified ends in *, as in {x*:...},
5383 check for presence of any switch name starting with x. */
5386 for (i = 0; i < n_switches; i++)
5388 unsigned hard_match_len = p - filter - 1;
5390 if (!strncmp (switches[i].part1, filter, hard_match_len)
5391 && check_live_switch (i, hard_match_len))
5398 /* Otherwise, check for presence of exact name specified. */
5401 for (i = 0; i < n_switches; i++)
5403 if (!strncmp (switches[i].part1, filter, p - filter)
5404 && switches[i].part1[p - filter] == 0
5405 && check_live_switch (i, -1))
5413 /* If it is as desired (present for %{s...}, absent for %{!s...})
5414 then substitute either the switch or the specified
5415 conditional text. */
5416 if (present != negate)
5420 switches[i].live_cond = SWITCH_IGNORE;
5421 switches[i].validated = 1;
5423 else if (ordered || *p == '&')
5424 ordered = 1, switches[i].ordering = 1;
5426 give_switch (i, 0, include_blanks);
5428 /* Even if many alternatives are matched, only output once. */
5433 /* Here if a %{|...} conditional fails: output a minus sign,
5434 which means "standard output" or "standard input". */
5435 do_spec_1 ("-", 0, NULL);
5440 /* We didn't match; try again. */
5447 goto next_ampersand;
5453 /* Doing this set of switches later preserves their command-line
5454 ordering. This is needed for e.g. -U, -D and -A. */
5455 for (i = 0; i < n_switches; i++)
5456 if (switches[i].ordering == 1)
5458 switches[i].ordering = 0;
5459 give_switch (i, 0, include_blanks);
5462 /* Process the spec just once, regardless of match count. */
5465 if (do_spec_1 (save_string (body, endbody - body - 1),
5473 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5474 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5475 spec, or -1 if either exact match or %* is used.
5477 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5478 whose value does not begin with "no-" is obsoleted by the same value
5479 with the "no-", similarly for a switch with the "no-" prefix. */
5482 check_live_switch (switchnum, prefix_length)
5486 const char *name = switches[switchnum].part1;
5489 /* In the common case of {<at-most-one-letter>*}, a negating
5490 switch would always match, so ignore that case. We will just
5491 send the conflicting switches to the compiler phase. */
5492 if (prefix_length >= 0 && prefix_length <= 1)
5495 /* If we already processed this switch and determined if it was
5496 live or not, return our past determination. */
5497 if (switches[switchnum].live_cond != 0)
5498 return switches[switchnum].live_cond > 0;
5500 /* Now search for duplicate in a manner that depends on the name. */
5504 for (i = switchnum + 1; i < n_switches; i++)
5505 if (switches[i].part1[0] == 'O')
5507 switches[switchnum].validated = 1;
5508 switches[switchnum].live_cond = SWITCH_FALSE;
5513 case 'W': case 'f': case 'm':
5514 if (! strncmp (name + 1, "no-", 3))
5516 /* We have Xno-YYY, search for XYYY. */
5517 for (i = switchnum + 1; i < n_switches; i++)
5518 if (switches[i].part1[0] == name[0]
5519 && ! strcmp (&switches[i].part1[1], &name[4]))
5521 switches[switchnum].validated = 1;
5522 switches[switchnum].live_cond = SWITCH_FALSE;
5528 /* We have XYYY, search for Xno-YYY. */
5529 for (i = switchnum + 1; i < n_switches; i++)
5530 if (switches[i].part1[0] == name[0]
5531 && switches[i].part1[1] == 'n'
5532 && switches[i].part1[2] == 'o'
5533 && switches[i].part1[3] == '-'
5534 && !strcmp (&switches[i].part1[4], &name[1]))
5536 switches[switchnum].validated = 1;
5537 switches[switchnum].live_cond = SWITCH_FALSE;
5544 /* Otherwise the switch is live. */
5545 switches[switchnum].live_cond = SWITCH_LIVE;
5549 /* Pass a switch to the current accumulating command
5550 in the same form that we received it.
5551 SWITCHNUM identifies the switch; it is an index into
5552 the vector of switches gcc received, which is `switches'.
5553 This cannot fail since it never finishes a command line.
5555 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument.
5557 If INCLUDE_BLANKS is nonzero, then we include blanks before each argument
5561 give_switch (switchnum, omit_first_word, include_blanks)
5563 int omit_first_word;
5566 if (switches[switchnum].live_cond == SWITCH_IGNORE)
5569 if (!omit_first_word)
5571 do_spec_1 ("-", 0, NULL);
5572 do_spec_1 (switches[switchnum].part1, 1, NULL);
5575 if (switches[switchnum].args != 0)
5578 for (p = switches[switchnum].args; *p; p++)
5580 const char *arg = *p;
5583 do_spec_1 (" ", 0, NULL);
5586 unsigned length = strlen (arg);
5589 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5590 if (arg[length] == '.')
5592 ((char *)arg)[length] = 0;
5596 do_spec_1 (arg, 1, NULL);
5598 ((char *)arg)[length] = '.';
5599 do_spec_1 (suffix_subst, 1, NULL);
5602 do_spec_1 (arg, 1, NULL);
5606 do_spec_1 (" ", 0, NULL);
5607 switches[switchnum].validated = 1;
5610 /* Search for a file named NAME trying various prefixes including the
5611 user's -B prefix and some standard ones.
5612 Return the absolute file name found. If nothing is found, return NAME. */
5620 /* Try multilib_dir if it is defined. */
5621 if (multilib_dir != NULL)
5623 const char *const try = ACONCAT ((multilib_dir, dir_separator_str, name, NULL));
5625 newname = find_a_file (&startfile_prefixes, try, R_OK);
5627 /* If we don't find it in the multi library dir, then fall
5628 through and look for it in the normal places. */
5629 if (newname != NULL)
5633 newname = find_a_file (&startfile_prefixes, name, R_OK);
5634 return newname ? newname : name;
5637 /* Determine whether a directory exists. If LINKER, return 0 for
5638 certain fixed names not needed by the linker. If not LINKER, it is
5639 only important to return 0 if the host machine has a small ARG_MAX
5643 is_directory (path1, path2, linker)
5648 int len1 = strlen (path1);
5649 int len2 = strlen (path2);
5650 char *path = (char *) alloca (3 + len1 + len2);
5654 #ifndef SMALL_ARG_MAX
5659 /* Construct the path from the two parts. Ensure the string ends with "/.".
5660 The resulting path will be a directory even if the given path is a
5662 memcpy (path, path1, len1);
5663 memcpy (path + len1, path2, len2);
5664 cp = path + len1 + len2;
5665 if (!IS_DIR_SEPARATOR (cp[-1]))
5666 *cp++ = DIR_SEPARATOR;
5670 /* Exclude directories that the linker is known to search. */
5673 && strcmp (path, concat (dir_separator_str, "lib",
5674 dir_separator_str, ".", NULL)) == 0)
5676 && strcmp (path, concat (dir_separator_str, "usr",
5677 dir_separator_str, "lib",
5678 dir_separator_str, ".", NULL)) == 0)))
5681 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5684 /* Set up the various global variables to indicate that we're processing
5685 the input file named FILENAME. */
5688 set_input (filename)
5689 const char *filename;
5693 input_filename = filename;
5694 input_filename_length = strlen (input_filename);
5696 input_basename = input_filename;
5697 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
5698 /* Skip drive name so 'x:foo' is handled properly. */
5699 if (input_basename[1] == ':')
5700 input_basename += 2;
5702 for (p = input_basename; *p; p++)
5703 if (IS_DIR_SEPARATOR (*p))
5704 input_basename = p + 1;
5706 /* Find a suffix starting with the last period,
5707 and set basename_length to exclude that suffix. */
5708 basename_length = strlen (input_basename);
5709 suffixed_basename_length = basename_length;
5710 p = input_basename + basename_length;
5711 while (p != input_basename && *p != '.')
5713 if (*p == '.' && p != input_basename)
5715 basename_length = p - input_basename;
5716 input_suffix = p + 1;
5721 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5722 we will need to do a stat on the input_filename. The
5723 INPUT_STAT_SET signals that the stat is needed. */
5727 /* On fatal signals, delete all the temporary files. */
5730 fatal_error (signum)
5733 signal (signum, SIG_DFL);
5734 delete_failure_queue ();
5735 delete_temp_files ();
5736 /* Get the same signal again, this time not handled,
5737 so its normal effect occurs. */
5738 kill (getpid (), signum);
5741 extern int main PARAMS ((int, const char *const *));
5746 const char *const *argv;
5750 int linker_was_run = 0;
5751 char *explicit_link_files;
5754 struct user_specs *uptr;
5756 p = argv[0] + strlen (argv[0]);
5757 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
5761 xmalloc_set_program_name (programname);
5763 #ifdef GCC_DRIVER_HOST_INITIALIZATION
5764 /* Perform host dependent initialization when needed. */
5765 GCC_DRIVER_HOST_INITIALIZATION;
5768 gcc_init_libintl ();
5770 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
5771 signal (SIGINT, fatal_error);
5773 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
5774 signal (SIGHUP, fatal_error);
5776 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
5777 signal (SIGTERM, fatal_error);
5779 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
5780 signal (SIGPIPE, fatal_error);
5783 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
5784 receive the signal. A different setting is inheritable */
5785 signal (SIGCHLD, SIG_DFL);
5789 argbuf = (const char **) xmalloc (argbuf_length * sizeof (const char *));
5791 obstack_init (&obstack);
5793 /* Build multilib_select, et. al from the separate lines that make up each
5794 multilib selection. */
5796 const char *const *q = multilib_raw;
5799 obstack_init (&multilib_obstack);
5800 while ((p = *q++) != (char *) 0)
5801 obstack_grow (&multilib_obstack, p, strlen (p));
5803 obstack_1grow (&multilib_obstack, 0);
5804 multilib_select = obstack_finish (&multilib_obstack);
5806 q = multilib_matches_raw;
5807 while ((p = *q++) != (char *) 0)
5808 obstack_grow (&multilib_obstack, p, strlen (p));
5810 obstack_1grow (&multilib_obstack, 0);
5811 multilib_matches = obstack_finish (&multilib_obstack);
5813 q = multilib_exclusions_raw;
5814 while ((p = *q++) != (char *) 0)
5815 obstack_grow (&multilib_obstack, p, strlen (p));
5817 obstack_1grow (&multilib_obstack, 0);
5818 multilib_exclusions = obstack_finish (&multilib_obstack);
5821 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
5824 obstack_1grow (&multilib_obstack, ' ');
5825 obstack_grow (&multilib_obstack,
5826 multilib_defaults_raw[i],
5827 strlen (multilib_defaults_raw[i]));
5831 obstack_1grow (&multilib_obstack, 0);
5832 multilib_defaults = obstack_finish (&multilib_obstack);
5835 /* Set up to remember the pathname of gcc and any options
5836 needed for collect. We use argv[0] instead of programname because
5837 we need the complete pathname. */
5838 obstack_init (&collect_obstack);
5839 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
5840 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
5841 putenv (obstack_finish (&collect_obstack));
5843 #ifdef INIT_ENVIRONMENT
5844 /* Set up any other necessary machine specific environment variables. */
5845 putenv (INIT_ENVIRONMENT);
5848 /* Make a table of what switches there are (switches, n_switches).
5849 Make a table of specified input files (infiles, n_infiles).
5850 Decode switches that are handled locally. */
5852 process_command (argc, argv);
5854 /* Initialize the vector of specs to just the default.
5855 This means one element containing 0s, as a terminator. */
5857 compilers = (struct compiler *) xmalloc (sizeof default_compilers);
5858 memcpy ((char *) compilers, (char *) default_compilers,
5859 sizeof default_compilers);
5860 n_compilers = n_default_compilers;
5862 /* Read specs from a file if there is one. */
5864 machine_suffix = concat (spec_machine, dir_separator_str,
5865 spec_version, dir_separator_str, NULL);
5866 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
5868 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK);
5869 /* Read the specs file unless it is a default one. */
5870 if (specs_file != 0 && strcmp (specs_file, "specs"))
5871 read_specs (specs_file, TRUE);
5875 /* We need to check standard_exec_prefix/just_machine_suffix/specs
5876 for any override of as, ld and libraries. */
5877 specs_file = (char *) alloca (strlen (standard_exec_prefix)
5878 + strlen (just_machine_suffix)
5879 + sizeof ("specs"));
5881 strcpy (specs_file, standard_exec_prefix);
5882 strcat (specs_file, just_machine_suffix);
5883 strcat (specs_file, "specs");
5884 if (access (specs_file, R_OK) == 0)
5885 read_specs (specs_file, TRUE);
5887 /* If not cross-compiling, look for startfiles in the standard places. */
5888 if (*cross_compile == '0')
5890 if (*md_exec_prefix)
5892 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
5893 PREFIX_PRIORITY_LAST, 0, NULL);
5894 add_prefix (&startfile_prefixes, md_exec_prefix, "GCC",
5895 PREFIX_PRIORITY_LAST, 0, NULL);
5898 if (*md_startfile_prefix)
5899 add_prefix (&startfile_prefixes, md_startfile_prefix, "GCC",
5900 PREFIX_PRIORITY_LAST, 0, NULL);
5902 if (*md_startfile_prefix_1)
5903 add_prefix (&startfile_prefixes, md_startfile_prefix_1, "GCC",
5904 PREFIX_PRIORITY_LAST, 0, NULL);
5906 /* If standard_startfile_prefix is relative, base it on
5907 standard_exec_prefix. This lets us move the installed tree
5908 as a unit. If GCC_EXEC_PREFIX is defined, base
5909 standard_startfile_prefix on that as well. */
5910 if (IS_ABSOLUTE_PATHNAME (standard_startfile_prefix))
5911 add_prefix (&startfile_prefixes, standard_startfile_prefix, "BINUTILS",
5912 PREFIX_PRIORITY_LAST, 0, NULL);
5915 if (gcc_exec_prefix)
5916 add_prefix (&startfile_prefixes,
5917 concat (gcc_exec_prefix, machine_suffix,
5918 standard_startfile_prefix, NULL),
5919 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
5920 add_prefix (&startfile_prefixes,
5921 concat (standard_exec_prefix,
5923 standard_startfile_prefix, NULL),
5924 NULL, PREFIX_PRIORITY_LAST, 0, NULL);
5927 add_prefix (&startfile_prefixes, standard_startfile_prefix_1,
5928 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
5929 add_prefix (&startfile_prefixes, standard_startfile_prefix_2,
5930 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
5931 #if 0 /* Can cause surprises, and one can use -B./ instead. */
5932 add_prefix (&startfile_prefixes, "./", NULL,
5933 PREFIX_PRIORITY_LAST, 1, NULL);
5938 if (!IS_ABSOLUTE_PATHNAME (standard_startfile_prefix)
5940 add_prefix (&startfile_prefixes,
5941 concat (gcc_exec_prefix, machine_suffix,
5942 standard_startfile_prefix, NULL),
5943 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL);
5946 /* Process any user specified specs in the order given on the command
5948 for (uptr = user_specs_head; uptr; uptr = uptr->next)
5950 char *filename = find_a_file (&startfile_prefixes, uptr->filename, R_OK);
5951 read_specs (filename ? filename : uptr->filename, FALSE);
5954 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
5955 if (gcc_exec_prefix)
5956 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
5957 spec_version, dir_separator_str, NULL);
5959 /* Now we have the specs.
5960 Set the `valid' bits for switches that match anything in any spec. */
5962 validate_all_switches ();
5964 /* Now that we have the switches and the specs, set
5965 the subdirectory based on the options. */
5966 set_multilib_dir ();
5968 /* Warn about any switches that no pass was interested in. */
5970 for (i = 0; (int) i < n_switches; i++)
5971 if (! switches[i].validated)
5972 error ("unrecognized option `-%s'", switches[i].part1);
5974 /* Obey some of the options. */
5976 if (print_search_dirs)
5978 printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix);
5979 printf (_("programs: %s\n"), build_search_list (&exec_prefixes, "", 0));
5980 printf (_("libraries: %s\n"), build_search_list (&startfile_prefixes, "", 0));
5984 if (print_file_name)
5986 printf ("%s\n", find_file (print_file_name));
5990 if (print_prog_name)
5992 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK);
5993 printf ("%s\n", (newname ? newname : print_prog_name));
5997 if (print_multi_lib)
5999 print_multilib_info ();
6003 if (print_multi_directory)
6005 if (multilib_dir == NULL)
6008 printf ("%s\n", multilib_dir);
6012 if (target_help_flag)
6014 /* Print if any target specific options.*/
6016 /* We do not exit here. Instead we have created a fake input file
6017 called 'target-dummy' which needs to be compiled, and we pass this
6018 on to the various sub-processes, along with the --target-help
6022 if (print_help_list)
6028 printf (_("\nFor bug reporting instructions, please see:\n"));
6029 printf ("%s.\n", GCCBUGURL);
6034 /* We do not exit here. Instead we have created a fake input file
6035 called 'help-dummy' which needs to be compiled, and we pass this
6036 on the various sub-processes, along with the --help switch. */
6044 notice ("Configured with: %s\n", configuration_arguments);
6046 #ifdef THREAD_MODEL_SPEC
6047 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6048 but there's no point in doing all this processing just to get
6049 thread_model back. */
6050 obstack_init (&obstack);
6051 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6052 obstack_1grow (&obstack, '\0');
6053 thrmod = obstack_finish (&obstack);
6055 thrmod = thread_model;
6058 notice ("Thread model: %s\n", thrmod);
6060 /* compiler_version is truncated at the first space when initialized
6061 from version string, so truncate version_string at the first space
6062 before comparing. */
6063 for (n = 0; version_string[n]; n++)
6064 if (version_string[n] == ' ')
6067 if (! strncmp (version_string, compiler_version, n)
6068 && compiler_version[n] == 0)
6069 notice ("gcc version %s\n", version_string);
6071 notice ("gcc driver version %s executing gcc version %s\n",
6072 version_string, compiler_version);
6078 if (n_infiles == added_libraries)
6079 fatal ("no input files");
6081 /* Make a place to record the compiler output file names
6082 that correspond to the input files. */
6085 i += lang_specific_extra_outfiles;
6086 outfiles = (const char **) xcalloc (i, sizeof (char *));
6088 /* Record which files were specified explicitly as link input. */
6090 explicit_link_files = xcalloc (1, n_infiles);
6092 for (i = 0; (int) i < n_infiles; i++)
6094 int this_file_error = 0;
6096 /* Tell do_spec what to substitute for %i. */
6098 input_file_number = i;
6099 set_input (infiles[i].name);
6101 /* Use the same thing in %o, unless cp->spec says otherwise. */
6103 outfiles[i] = input_filename;
6105 /* Figure out which compiler from the file's suffix. */
6108 = lookup_compiler (infiles[i].name, input_filename_length,
6109 infiles[i].language);
6111 if (input_file_compiler)
6113 /* Ok, we found an applicable compiler. Run its spec. */
6115 if (input_file_compiler->spec[0] == '#')
6117 error ("%s: %s compiler not installed on this system",
6118 input_filename, &input_file_compiler->spec[1]);
6119 this_file_error = 1;
6123 value = do_spec (input_file_compiler->spec);
6125 this_file_error = 1;
6129 /* If this file's name does not contain a recognized suffix,
6130 record it as explicit linker input. */
6133 explicit_link_files[i] = 1;
6135 /* Clear the delete-on-failure queue, deleting the files in it
6136 if this compilation failed. */
6138 if (this_file_error)
6140 delete_failure_queue ();
6143 /* If this compilation succeeded, don't delete those files later. */
6144 clear_failure_queue ();
6147 /* Reset the output file name to the first input file name, for use
6148 with %b in LINK_SPEC on a target that prefers not to emit a.out
6151 set_input (infiles[0].name);
6153 if (error_count == 0)
6155 /* Make sure INPUT_FILE_NUMBER points to first available open
6157 input_file_number = n_infiles;
6158 if (lang_specific_pre_link ())
6162 /* Run ld to link all the compiler output files. */
6164 if (error_count == 0)
6166 int tmp = execution_count;
6168 /* We'll use ld if we can't find collect2. */
6169 if (! strcmp (linker_name_spec, "collect2"))
6171 char *s = find_a_file (&exec_prefixes, "collect2", X_OK);
6173 linker_name_spec = "ld";
6175 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6177 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH");
6178 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV);
6180 value = do_spec (link_command_spec);
6183 linker_was_run = (tmp != execution_count);
6186 /* If options said don't run linker,
6187 complain about input files to be given to the linker. */
6189 if (! linker_was_run && error_count == 0)
6190 for (i = 0; (int) i < n_infiles; i++)
6191 if (explicit_link_files[i])
6192 error ("%s: linker input file unused because linking not done",
6195 /* Delete some or all of the temporary files we made. */
6198 delete_failure_queue ();
6199 delete_temp_files ();
6201 if (print_help_list)
6203 printf (("\nFor bug reporting instructions, please see:\n"));
6204 printf ("%s\n", GCCBUGURL);
6207 return (signal_count != 0 ? 2
6208 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
6212 /* Find the proper compilation spec for the file name NAME,
6213 whose length is LENGTH. LANGUAGE is the specified language,
6214 or 0 if this file is to be passed to the linker. */
6216 static struct compiler *
6217 lookup_compiler (name, length, language)
6220 const char *language;
6222 struct compiler *cp;
6224 /* If this was specified by the user to be a linker input, indicate that. */
6225 if (language != 0 && language[0] == '*')
6228 /* Otherwise, look for the language, if one is spec'd. */
6231 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6232 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6235 error ("language %s not recognized", language);
6239 /* Look for a suffix. */
6240 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6242 if (/* The suffix `-' matches only the file name `-'. */
6243 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6244 || (strlen (cp->suffix) < length
6245 /* See if the suffix matches the end of NAME. */
6246 && !strcmp (cp->suffix,
6247 name + length - strlen (cp->suffix))
6252 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6253 /* look again, but case-insensitively this time. */
6255 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6257 if (/* The suffix `-' matches only the file name `-'. */
6258 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6259 || (strlen (cp->suffix) < length
6260 /* See if the suffix matches the end of NAME. */
6261 && ((!strcmp (cp->suffix,
6262 name + length - strlen (cp->suffix))
6263 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6264 && !strcasecmp (cp->suffix,
6265 name + length - strlen (cp->suffix)))
6271 if (cp >= compilers)
6273 if (cp->spec[0] != '@')
6274 /* A non-alias entry: return it. */
6277 /* An alias entry maps a suffix to a language.
6278 Search for the language; pass 0 for NAME and LENGTH
6279 to avoid infinite recursion if language not found. */
6280 return lookup_compiler (NULL, 0, cp->spec + 1);
6286 save_string (s, len)
6290 char *result = xmalloc (len + 1);
6292 memcpy (result, s, len);
6298 pfatal_with_name (name)
6301 perror_with_name (name);
6302 delete_temp_files ();
6307 perror_with_name (name)
6310 error ("%s: %s", name, xstrerror (errno));
6314 pfatal_pexecute (errmsg_fmt, errmsg_arg)
6315 const char *errmsg_fmt;
6316 const char *errmsg_arg;
6320 int save_errno = errno;
6322 /* Space for trailing '\0' is in %s. */
6323 char *msg = xmalloc (strlen (errmsg_fmt) + strlen (errmsg_arg));
6324 sprintf (msg, errmsg_fmt, errmsg_arg);
6330 pfatal_with_name (errmsg_fmt);
6333 /* Output an error message and exit */
6338 fatal ("internal gcc abort");
6341 /* Output an error message and exit */
6344 fatal VPARAMS ((const char *msgid, ...))
6346 VA_OPEN (ap, msgid);
6347 VA_FIXEDARG (ap, const char *, msgid);
6349 fprintf (stderr, "%s: ", programname);
6350 vfprintf (stderr, _(msgid), ap);
6352 fprintf (stderr, "\n");
6353 delete_temp_files ();
6358 error VPARAMS ((const char *msgid, ...))
6360 VA_OPEN (ap, msgid);
6361 VA_FIXEDARG (ap, const char *, msgid);
6363 fprintf (stderr, "%s: ", programname);
6364 vfprintf (stderr, _(msgid), ap);
6367 fprintf (stderr, "\n");
6371 notice VPARAMS ((const char *msgid, ...))
6373 VA_OPEN (ap, msgid);
6374 VA_FIXEDARG (ap, const char *, msgid);
6376 vfprintf (stderr, _(msgid), ap);
6381 validate_all_switches ()
6383 struct compiler *comp;
6386 struct spec_list *spec;
6388 for (comp = compilers; comp->spec; comp++)
6392 if (c == '%' && *p == '{')
6393 /* We have a switch spec. */
6394 validate_switches (p + 1);
6397 /* Look through the linked list of specs read from the specs file. */
6398 for (spec = specs; spec; spec = spec->next)
6400 p = *(spec->ptr_spec);
6402 if (c == '%' && *p == '{')
6403 /* We have a switch spec. */
6404 validate_switches (p + 1);
6407 p = link_command_spec;
6409 if (c == '%' && *p == '{')
6410 /* We have a switch spec. */
6411 validate_switches (p + 1);
6414 /* Look at the switch-name that comes after START
6415 and mark as valid all supplied switches that match it. */
6418 validate_switches (start)
6421 const char *p = start;
6438 while (*p != ':' && *p != '}' && *p != '|' && *p != '&')
6443 else if (p[-1] == '*')
6445 /* Mark all matching switches as valid. */
6446 for (i = 0; i < n_switches; i++)
6447 if (!strncmp (switches[i].part1, filter, p - filter - 1))
6448 switches[i].validated = 1;
6452 /* Mark an exact matching switch as valid. */
6453 for (i = 0; i < n_switches; i++)
6455 if (!strncmp (switches[i].part1, filter, p - filter)
6456 && switches[i].part1[p - filter] == 0)
6457 switches[i].validated = 1;
6461 if (*p++ == '|' || p[-1] == '&')
6465 /* Check whether a particular argument was used. The first time we
6466 canonicalize the switches to keep only the ones we care about. */
6476 const char *replace;
6481 static struct mswitchstr *mswitches;
6482 static int n_mswitches;
6487 struct mswitchstr *matches;
6491 /* Break multilib_matches into the component strings of string
6492 and replacement string. */
6493 for (q = multilib_matches; *q != '\0'; q++)
6498 (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
6500 q = multilib_matches;
6510 matches[i].len = q - matches[i].str;
6512 matches[i].replace = ++q;
6513 while (*q != ';' && *q != '\0')
6519 matches[i].rep_len = q - matches[i].replace;
6525 /* Now build a list of the replacement string for switches that we care
6526 about. Make sure we allocate at least one entry. This prevents
6527 xmalloc from calling fatal, and prevents us from re-executing this
6530 = (struct mswitchstr *) xmalloc ((sizeof (struct mswitchstr))
6531 * (n_switches ? n_switches : 1));
6532 for (i = 0; i < n_switches; i++)
6534 int xlen = strlen (switches[i].part1);
6535 for (j = 0; j < cnt; j++)
6536 if (xlen == matches[j].len
6537 && ! strncmp (switches[i].part1, matches[j].str, xlen))
6539 mswitches[n_mswitches].str = matches[j].replace;
6540 mswitches[n_mswitches].len = matches[j].rep_len;
6541 mswitches[n_mswitches].replace = (char *) 0;
6542 mswitches[n_mswitches].rep_len = 0;
6549 for (i = 0; i < n_mswitches; i++)
6550 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
6557 default_arg (p, len)
6561 const char *start, *end;
6563 for (start = multilib_defaults; *start != '\0'; start = end + 1)
6565 while (*start == ' ' || *start == '\t')
6571 for (end = start + 1; *end != ' ' && *end != '\t' && *end != '\0'; end++)
6574 if ((end - start) == len && strncmp (p, start, len) == 0)
6584 /* Work out the subdirectory to use based on the options. The format of
6585 multilib_select is a list of elements. Each element is a subdirectory
6586 name followed by a list of options followed by a semicolon. The format
6587 of multilib_exclusions is the same, but without the preceding
6588 directory. First gcc will check the exclusions, if none of the options
6589 beginning with an exclamation point are present, and all of the other
6590 options are present, then we will ignore this completely. Passing
6591 that, gcc will consider each multilib_select in turn using the same
6592 rules for matching the options. If a match is found, that subdirectory
6599 unsigned int this_path_len;
6600 const char *this_path, *this_arg;
6604 p = multilib_exclusions;
6607 /* Ignore newlines. */
6614 /* Check the arguments. */
6628 while (*p != ' ' && *p != ';')
6635 if (*this_arg != '!')
6643 ok = used_arg (this_arg, p - this_arg);
6657 p = multilib_select;
6660 /* Ignore newlines. */
6667 /* Get the initial path. */
6675 this_path_len = p - this_path;
6677 /* Check the arguments. */
6692 while (*p != ' ' && *p != ';')
6699 if (*this_arg != '!')
6707 /* If this is a default argument, we can just ignore it.
6708 This is true even if this_arg begins with '!'. Beginning
6709 with '!' does not mean that this argument is necessarily
6710 inappropriate for this library: it merely means that
6711 there is a more specific library which uses this
6712 argument. If this argument is a default, we need not
6713 consider that more specific library. */
6714 if (! default_arg (this_arg, p - this_arg))
6716 ok = used_arg (this_arg, p - this_arg);
6727 if (this_path_len != 1
6728 || this_path[0] != '.')
6730 char *new_multilib_dir = xmalloc (this_path_len + 1);
6731 strncpy (new_multilib_dir, this_path, this_path_len);
6732 new_multilib_dir[this_path_len] = '\0';
6733 multilib_dir = new_multilib_dir;
6742 /* Print out the multiple library subdirectory selection
6743 information. This prints out a series of lines. Each line looks
6744 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
6745 required. Only the desired options are printed out, the negative
6746 matches. The options are print without a leading dash. There are
6747 no spaces to make it easy to use the information in the shell.
6748 Each subdirectory is printed only once. This assumes the ordering
6749 generated by the genmultilib script. Also, we leave out ones that match
6753 print_multilib_info ()
6755 const char *p = multilib_select;
6756 const char *last_path = 0, *this_path;
6758 unsigned int last_path_len = 0;
6763 /* Ignore newlines. */
6770 /* Get the initial path. */
6779 /* Check for matches with the multilib_exclusions. We don't bother
6780 with the '!' in either list. If any of the exclusion rules match
6781 all of its options with the select rule, we skip it. */
6783 const char *e = multilib_exclusions;
6784 const char *this_arg;
6789 /* Ignore newlines. */
6796 /* Check the arguments. */
6813 while (*e != ' ' && *e != ';')
6824 int len = e - this_arg;
6831 while (*q != ' ' && *q != ';')
6838 if (! strncmp (arg, this_arg, (len < q - arg) ? q - arg : len) ||
6839 default_arg (this_arg, e - this_arg))
6869 /* If this is a duplicate, skip it. */
6870 skip = (last_path != 0 && (unsigned int) (p - this_path) == last_path_len
6871 && ! strncmp (last_path, this_path, last_path_len));
6873 last_path = this_path;
6874 last_path_len = p - this_path;
6877 /* If this directory requires any default arguments, we can skip
6878 it. We will already have printed a directory identical to
6879 this one which does not require that default argument. */
6897 while (*q != ' ' && *q != ';')
6905 && default_arg (arg, q - arg))
6920 for (p1 = last_path; p1 < p; p1++)
6939 use_arg = *p != '!';
6944 while (*p != ' ' && *p != ';')
6959 /* If there are extra options, print them now. */
6960 if (multilib_extra && *multilib_extra)
6962 int print_at = TRUE;
6965 for (q = multilib_extra; *q != '\0'; q++)