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, 2003 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(). */
75 #include "coretypes.h"
78 #if ! defined( SIGCHLD ) && defined( SIGCLD )
79 # define SIGCHLD SIGCLD
87 #ifdef HAVE_SYS_RESOURCE_H
88 #include <sys/resource.h>
90 #if defined (HAVE_DECL_GETRUSAGE) && !HAVE_DECL_GETRUSAGE
91 extern int getrusage (int, struct rusage *);
94 /* By default there is no special suffix for target executables. */
95 /* FIXME: when autoconf is fixed, remove the host check - dj */
96 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
97 #define HAVE_TARGET_EXECUTABLE_SUFFIX
100 /* By default there is no special suffix for host executables. */
101 #ifdef HOST_EXECUTABLE_SUFFIX
102 #define HAVE_HOST_EXECUTABLE_SUFFIX
104 #define HOST_EXECUTABLE_SUFFIX ""
107 /* By default, the suffix for target object files is ".o". */
108 #ifdef TARGET_OBJECT_SUFFIX
109 #define HAVE_TARGET_OBJECT_SUFFIX
111 #define TARGET_OBJECT_SUFFIX ".o"
114 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
116 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
117 #ifndef LIBRARY_PATH_ENV
118 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
122 #define kill(p,s) raise(s)
125 /* If a stage of compilation returns an exit status >= 1,
126 compilation of that file ceases. */
128 #define MIN_FATAL_STATUS 1
130 /* Flag set by cppspec.c to 1. */
133 /* Flag saying to pass the greatest exit code returned by a sub-process
134 to the calling program. */
135 static int pass_exit_codes;
137 /* Definition of string containing the arguments given to configure. */
138 #include "configargs.h"
140 /* Flag saying to print the directories gcc will search through looking for
141 programs, libraries, etc. */
143 static int print_search_dirs;
145 /* Flag saying to print the full filename of this file
146 as found through our usual search mechanism. */
148 static const char *print_file_name = NULL;
150 /* As print_file_name, but search for executable file. */
152 static const char *print_prog_name = NULL;
154 /* Flag saying to print the relative path we'd use to
155 find libgcc.a given the current compiler flags. */
157 static int print_multi_directory;
159 /* Flag saying to print the relative path we'd use to
160 find OS libraries given the current compiler flags. */
162 static int print_multi_os_directory;
164 /* Flag saying to print the list of subdirectories and
165 compiler flags used to select them in a standard form. */
167 static int print_multi_lib;
169 /* Flag saying to print the command line options understood by gcc and its
172 static int print_help_list;
174 /* Flag indicating whether we should print the command and arguments */
176 static int verbose_flag;
178 /* Flag indicating whether we should ONLY print the command and
179 arguments (like verbose_flag) without executing the command.
180 Displayed arguments are quoted so that the generated command
181 line is suitable for execution. This is intended for use in
182 shell scripts to capture the driver-generated command line. */
183 static int verbose_only_flag;
185 /* Flag indicating to print target specific command line options. */
187 static int target_help_flag;
189 /* Flag indicating whether we should report subprocess execution times
190 (if this is supported by the system - see pexecute.c). */
192 static int report_times;
194 /* Nonzero means place this string before uses of /, so that include
195 and library files can be found in an alternate location. */
197 #ifdef TARGET_SYSTEM_ROOT
198 static const char *target_system_root = TARGET_SYSTEM_ROOT;
200 static const char *target_system_root = 0;
203 /* Nonzero means pass the updated target_system_root to the compiler. */
205 static int target_system_root_changed;
207 /* Nonzero means append this string to target_system_root. */
209 static const char *target_sysroot_suffix = 0;
211 /* Nonzero means append this string to target_system_root for headers. */
213 static const char *target_sysroot_hdrs_suffix = 0;
215 /* Nonzero means write "temp" files in source directory
216 and use the source file's name in them, and don't delete them. */
218 static int save_temps_flag;
220 /* Nonzero means use pipes to communicate between subprocesses.
221 Overridden by either of the above two flags. */
223 static int use_pipes;
225 /* The compiler version. */
227 static const char *compiler_version;
229 /* The target version specified with -V */
231 static const char *const spec_version = DEFAULT_TARGET_VERSION;
233 /* The target machine specified with -b. */
235 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
237 /* Nonzero if cross-compiling.
238 When -b is used, the value comes from the `specs' file. */
241 static const char *cross_compile = "1";
243 static const char *cross_compile = "0";
246 #ifdef MODIFY_TARGET_NAME
248 /* Information on how to alter the target name based on a command-line
249 switch. The only case we support now is simply appending or deleting a
250 string to or from the end of the first part of the configuration name. */
252 static const struct modify_target
254 const char *const sw;
255 const enum add_del {ADD, DELETE} add_del;
256 const char *const str;
258 modify_target[] = MODIFY_TARGET_NAME;
261 /* The number of errors that have occurred; the link phase will not be
262 run if this is nonzero. */
263 static int error_count = 0;
265 /* Greatest exit code of sub-processes that has been encountered up to
267 static int greatest_status = 1;
269 /* This is the obstack which we use to allocate many strings. */
271 static struct obstack obstack;
273 /* This is the obstack to build an environment variable to pass to
274 collect2 that describes all of the relevant switches of what to
275 pass the compiler in building the list of pointers to constructors
278 static struct obstack collect_obstack;
280 /* These structs are used to collect resource usage information for
282 #ifdef HAVE_GETRUSAGE
283 static struct rusage rus, prus;
286 /* Forward declaration for prototypes. */
289 static void init_spec (void);
290 static void store_arg (const char *, int, int);
291 static char *load_specs (const char *);
292 static void read_specs (const char *, int);
293 static void set_spec (const char *, const char *);
294 static struct compiler *lookup_compiler (const char *, size_t, const char *);
295 static char *build_search_list (struct path_prefix *, const char *, int);
296 static void putenv_from_prefixes (struct path_prefix *, const char *);
297 static int access_check (const char *, int);
298 static char *find_a_file (struct path_prefix *, const char *, int, int);
299 static void add_prefix (struct path_prefix *, const char *, const char *,
300 int, int, int *, int);
301 static void add_sysrooted_prefix (struct path_prefix *, const char *,
302 const char *, int, int, int *, int);
303 static void translate_options (int *, const char *const **);
304 static char *skip_whitespace (char *);
305 static void delete_if_ordinary (const char *);
306 static void delete_temp_files (void);
307 static void delete_failure_queue (void);
308 static void clear_failure_queue (void);
309 static int check_live_switch (int, int);
310 static const char *handle_braces (const char *);
311 static inline bool input_suffix_matches (const char *, const char *);
312 static inline bool switch_matches (const char *, const char *, int);
313 static inline void mark_matching_switches (const char *, const char *, int);
314 static inline void process_marked_switches (void);
315 static const char *process_brace_body (const char *, const char *, const char *, int, int);
316 static const struct spec_function *lookup_spec_function (const char *);
317 static const char *eval_spec_function (const char *, const char *);
318 static const char *handle_spec_function (const char *);
319 static char *save_string (const char *, int);
320 static void set_collect_gcc_options (void);
321 static int do_spec_1 (const char *, int, const char *);
322 static int do_spec_2 (const char *);
323 static void do_option_spec (const char *, const char *);
324 static void do_self_spec (const char *);
325 static const char *find_file (const char *);
326 static int is_directory (const char *, const char *, int);
327 static const char *validate_switches (const char *);
328 static void validate_all_switches (void);
329 static inline void validate_switches_from_spec (const char *);
330 static void give_switch (int, int);
331 static int used_arg (const char *, int);
332 static int default_arg (const char *, int);
333 static void set_multilib_dir (void);
334 static void print_multilib_info (void);
335 static void perror_with_name (const char *);
336 static void pfatal_pexecute (const char *, const char *) ATTRIBUTE_NORETURN;
337 static void notice (const char *, ...) ATTRIBUTE_PRINTF_1;
338 static void display_help (void);
339 static void add_preprocessor_option (const char *, int);
340 static void add_assembler_option (const char *, int);
341 static void add_linker_option (const char *, int);
342 static void process_command (int, const char *const *);
343 static int execute (void);
344 static void alloc_args (void);
345 static void clear_args (void);
346 static void fatal_error (int);
347 #ifdef ENABLE_SHARED_LIBGCC
348 static void init_gcc_specs (struct obstack *, const char *, const char *,
351 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
352 static const char *convert_filename (const char *, int, int);
355 static const char *if_exists_spec_function (int, const char **);
356 static const char *if_exists_else_spec_function (int, const char **);
358 /* The Specs Language
360 Specs are strings containing lines, each of which (if not blank)
361 is made up of a program name, and arguments separated by spaces.
362 The program name must be exact and start from root, since no path
363 is searched and it is unreliable to depend on the current working directory.
364 Redirection of input or output is not supported; the subprograms must
365 accept filenames saying what files to read and write.
367 In addition, the specs can contain %-sequences to substitute variable text
368 or for conditional text. Here is a table of all defined %-sequences.
369 Note that spaces are not generated automatically around the results of
370 expanding these sequences; therefore, you can concatenate them together
371 or with constant text in a single argument.
373 %% substitute one % into the program name or argument.
374 %i substitute the name of the input file being processed.
375 %b substitute the basename of the input file being processed.
376 This is the substring up to (and not including) the last period
377 and not including the directory.
378 %B same as %b, but include the file suffix (text after the last period).
380 substitute a file name that has suffix SUFFIX and is chosen
381 once per compilation, and mark the argument a la %d. To reduce
382 exposure to denial-of-service attacks, the file name is now
383 chosen in a way that is hard to predict even when previously
384 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
385 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
386 the regexp "[.A-Za-z]*%O"; "%O" is treated exactly as if it
387 had been pre-processed. Previously, %g was simply substituted
388 with a file name chosen once per compilation, without regard
389 to any appended suffix (which was therefore treated just like
390 ordinary text), making such attacks more likely to succeed.
392 like %g, but if -pipe is in effect, expands simply to "-".
394 like %g, but if -pipe is in effect, expands to nothing. (We have both
395 %| and %m to accommodate differences between system assemblers; see
396 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
398 like %g, but generates a new temporary file name even if %uSUFFIX
401 substitutes the last file name generated with %uSUFFIX, generating a
402 new one if there is no such last file name. In the absence of any
403 %uSUFFIX, this is just like %gSUFFIX, except they don't share
404 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
405 would involve the generation of two distinct file names, one
406 for each `%g.s' and another for each `%U.s'. Previously, %U was
407 simply substituted with a file name chosen for the previous %u,
408 without regard to any appended suffix.
410 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
411 writable, and if save-temps is off; otherwise, substitute the name
412 of a temporary file, just like %u. This temporary file is not
413 meant for communication between processes, but rather as a junk
416 substitutes .SUFFIX for the suffixes of a matched switch's args when
417 it is subsequently output with %*. SUFFIX is terminated by the next
419 %d marks the argument containing or following the %d as a
420 temporary file name, so that that file will be deleted if CC exits
421 successfully. Unlike %g, this contributes no text to the argument.
422 %w marks the argument containing or following the %w as the
423 "output file" of this compilation. This puts the argument
424 into the sequence of arguments that %o will substitute later.
425 %V indicates that this compilation produces no "output file".
427 like %{...} but mark last argument supplied within
428 as a file to be deleted on failure.
429 %o substitutes the names of all the output files, with spaces
430 automatically placed around them. You should write spaces
431 around the %o as well or the results are undefined.
432 %o is for use in the specs for running the linker.
433 Input files whose names have no recognized suffix are not compiled
434 at all, but they are included among the output files, so they will
436 %O substitutes the suffix for object files. Note that this is
437 handled specially when it immediately follows %g, %u, or %U
438 (with or without a suffix argument) because of the need for
439 those to form complete file names. The handling is such that
440 %O is treated exactly as if it had already been substituted,
441 except that %g, %u, and %U do not currently support additional
442 SUFFIX characters following %O as they would following, for
444 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
445 (made from TARGET_SYSTEM_ROOT), and -isystem (made from COMPILER_PATH
446 and -B options) as necessary.
447 %s current argument is the name of a library or startup file of some sort.
448 Search for that file in a standard list of directories
449 and substitute the full name found.
450 %eSTR Print STR as an error message. STR is terminated by a newline.
451 Use this when inconsistent options are detected.
452 %nSTR Print STR as a notice. STR is terminated by a newline.
453 %x{OPTION} Accumulate an option for %X.
454 %X Output the accumulated linker options specified by compilations.
455 %Y Output the accumulated assembler options specified by compilations.
456 %Z Output the accumulated preprocessor options specified by compilations.
457 %a process ASM_SPEC as a spec.
458 This allows config.h to specify part of the spec for running as.
459 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
460 used here. This can be used to run a post-processor after the
461 assembler has done its job.
462 %D Dump out a -L option for each directory in startfile_prefixes.
463 If multilib_dir is set, extra entries are generated with it affixed.
464 %l process LINK_SPEC as a spec.
465 %L process LIB_SPEC as a spec.
466 %G process LIBGCC_SPEC as a spec.
467 %M output multilib_dir with directory separators replaced with "_";
468 if multilib_dir is not set or is ".", output "".
469 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
470 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
471 %C process CPP_SPEC as a spec.
472 %1 process CC1_SPEC as a spec.
473 %2 process CC1PLUS_SPEC as a spec.
474 %* substitute the variable part of a matched option. (See below.)
475 Note that each comma in the substituted string is replaced by
477 %<S remove all occurrences of -S from the command line.
478 Note - this command is position dependent. % commands in the
479 spec string before this one will see -S, % commands in the
480 spec string after this one will not.
481 %<S* remove all occurrences of all switches beginning with -S from the
484 Call the named function FUNCTION, passing it ARGS. ARGS is
485 first processed as a nested spec string, then split into an
486 argument vector in the usual fashion. The function returns
487 a string which is processed as if it had appeared literally
488 as part of the current spec.
489 %{S} substitutes the -S switch, if that switch was given to CC.
490 If that switch was not specified, this substitutes nothing.
491 Here S is a metasyntactic variable.
492 %{S*} substitutes all the switches specified to CC whose names start
493 with -S. This is used for -o, -I, etc; switches that take
494 arguments. CC considers `-o foo' as being one switch whose
495 name starts with `o'. %{o*} would substitute this text,
496 including the space; thus, two arguments would be generated.
497 %{S*&T*} likewise, but preserve order of S and T options (the order
498 of S and T in the spec is not significant). Can be any number
499 of ampersand-separated variables; for each the wild card is
500 optional. Useful for CPP as %{D*&U*&A*}.
502 %{S:X} substitutes X, if the -S switch was given to CC.
503 %{!S:X} substitutes X, if the -S switch was NOT given to CC.
504 %{S*:X} substitutes X if one or more switches whose names start
505 with -S was given to CC. Normally X is substituted only
506 once, no matter how many such switches appeared. However,
507 if %* appears somewhere in X, then X will be substituted
508 once for each matching switch, with the %* replaced by the
509 part of that switch that matched the '*'.
510 %{.S:X} substitutes X, if processing a file with suffix S.
511 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
513 %{S|T:X} substitutes X if either -S or -T was given to CC. This may be
514 combined with !, ., and * as above binding stronger than the OR.
515 If %* appears in X, all of the alternatives must be starred, and
516 only the first matching alternative is substituted.
517 %{S:X; if S was given to CC, substitutes X;
518 T:Y; else if T was given to CC, substitutes Y;
519 :D} else substitutes D. There can be as many clauses as you need.
520 This may be combined with ., !, |, and * as above.
522 %(Spec) processes a specification defined in a specs file as *Spec:
523 %[Spec] as above, but put __ around -D arguments
525 The conditional text X in a %{S:X} or similar construct may contain
526 other nested % constructs or spaces, or even newlines. They are
527 processed as usual, as described above. Trailing white space in X is
528 ignored. White space may also appear anywhere on the left side of the
529 colon in these constructs, except between . or * and the corresponding
532 The -O, -f, -m, and -W switches are handled specifically in these
533 constructs. If another value of -O or the negated form of a -f, -m, or
534 -W switch is found later in the command line, the earlier switch
535 value is ignored, except with {S*} where S is just one letter; this
536 passes all matching options.
538 The character | at the beginning of the predicate text is used to indicate
539 that a command should be piped to the following command, but only if -pipe
542 Note that it is built into CC which switches take arguments and which
543 do not. You might think it would be useful to generalize this to
544 allow each compiler's spec to say which switches take arguments. But
545 this cannot be done in a consistent fashion. CC cannot even decide
546 which input files have been specified without knowing which switches
547 take arguments, and it must know which input files to compile in order
548 to tell which compilers to run.
550 CC also knows implicitly that arguments starting in `-l' are to be
551 treated as compiler output files, and passed to the linker in their
552 proper position among the other output files. */
554 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
556 /* config.h can define ASM_SPEC to provide extra args to the assembler
557 or extra switch-translations. */
562 /* config.h can define ASM_FINAL_SPEC to run a post processor after
563 the assembler has run. */
564 #ifndef ASM_FINAL_SPEC
565 #define ASM_FINAL_SPEC ""
568 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
569 or extra switch-translations. */
574 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
575 or extra switch-translations. */
580 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
581 or extra switch-translations. */
583 #define CC1PLUS_SPEC ""
586 /* config.h can define LINK_SPEC to provide extra args to the linker
587 or extra switch-translations. */
592 /* config.h can define LIB_SPEC to override the default libraries. */
594 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
597 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
600 #if defined(LINK_LIBGCC_SPECIAL) || defined(LINK_LIBGCC_SPECIAL_1)
601 /* Have gcc do the search for libgcc.a. */
602 #define LIBGCC_SPEC "libgcc.a%s"
604 #define LIBGCC_SPEC "-lgcc"
608 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
609 #ifndef STARTFILE_SPEC
610 #define STARTFILE_SPEC \
611 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
614 /* config.h can define SWITCHES_NEED_SPACES to control which options
615 require spaces between the option and the argument. */
616 #ifndef SWITCHES_NEED_SPACES
617 #define SWITCHES_NEED_SPACES ""
620 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
622 #define ENDFILE_SPEC ""
626 #define LINKER_NAME "collect2"
629 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
631 #ifndef ASM_DEBUG_SPEC
632 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
633 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
634 # define ASM_DEBUG_SPEC \
635 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
636 ? "%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}" \
637 : "%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}")
639 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
640 # define ASM_DEBUG_SPEC "%{g*:--gstabs}"
642 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
643 # define ASM_DEBUG_SPEC "%{g*:--gdwarf2}"
647 #ifndef ASM_DEBUG_SPEC
648 # define ASM_DEBUG_SPEC ""
651 /* Here is the spec for running the linker, after compiling all files. */
653 /* This is overridable by the target in case they need to specify the
654 -lgcc and -lc order specially, yet not require them to override all
655 of LINK_COMMAND_SPEC. */
656 #ifndef LINK_GCC_C_SEQUENCE_SPEC
657 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
660 #ifndef LINK_PIE_SPEC
662 #define LINK_PIE_SPEC "%{pie:-pie} "
664 #define LINK_PIE_SPEC "%{pie:} "
668 /* -u* was put back because both BSD and SysV seem to support it. */
669 /* %{static:} simply prevents an error message if the target machine
670 doesn't handle -static. */
671 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
672 scripts which exist in user specified directories, or in standard
674 #ifndef LINK_COMMAND_SPEC
675 #define LINK_COMMAND_SPEC "\
676 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
677 %(linker) %l " LINK_PIE_SPEC "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\
678 %{s} %{t} %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
679 %{static:} %{L*} %(link_libgcc) %o %{fprofile-arcs:-lgcov}\
680 %{!nostdlib:%{!nodefaultlibs:%(link_gcc_c_sequence)}}\
681 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
684 #ifndef LINK_LIBGCC_SPEC
685 # ifdef LINK_LIBGCC_SPECIAL
686 /* Don't generate -L options for startfile prefix list. */
687 # define LINK_LIBGCC_SPEC ""
689 /* Do generate them. */
690 # define LINK_LIBGCC_SPEC "%D"
694 #ifndef STARTFILE_PREFIX_SPEC
695 # define STARTFILE_PREFIX_SPEC ""
698 #ifndef SYSROOT_SUFFIX_SPEC
699 # define SYSROOT_SUFFIX_SPEC ""
702 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
703 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
706 static const char *asm_debug;
707 static const char *cpp_spec = CPP_SPEC;
708 static const char *cc1_spec = CC1_SPEC;
709 static const char *cc1plus_spec = CC1PLUS_SPEC;
710 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
711 static const char *asm_spec = ASM_SPEC;
712 static const char *asm_final_spec = ASM_FINAL_SPEC;
713 static const char *link_spec = LINK_SPEC;
714 static const char *lib_spec = LIB_SPEC;
715 static const char *libgcc_spec = LIBGCC_SPEC;
716 static const char *endfile_spec = ENDFILE_SPEC;
717 static const char *startfile_spec = STARTFILE_SPEC;
718 static const char *switches_need_spaces = SWITCHES_NEED_SPACES;
719 static const char *linker_name_spec = LINKER_NAME;
720 static const char *link_command_spec = LINK_COMMAND_SPEC;
721 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
722 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
723 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
724 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
726 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
727 There should be no need to override these in target dependent files,
728 but we need to copy them to the specs file so that newer versions
729 of the GCC driver can correctly drive older tool chains with the
730 appropriate -B options. */
732 /* When cpplib handles traditional preprocessing, get rid of this, and
733 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
734 that we default the front end language better. */
735 static const char *trad_capable_cpp =
736 "cc1 -E %{traditional|ftraditional|traditional-cpp:-traditional-cpp}";
738 /* We don't wrap .d files in %W{} since a missing .d file, and
739 therefore no dependency entry, confuses make into thinking a .o
740 file that happens to exist is up-to-date. */
741 static const char *cpp_unique_options =
742 "%{C|CC:%{!E:%eGCC does not support -C or -CC without -E}}\
743 %{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*} %{P} %I\
744 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
745 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
746 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
747 %{!E:%{!M:%{!MM:%{MD|MMD:%{o*:-MQ %*}}}}}\
748 %{trigraphs} %{remap} %{g3:-dD} %{H} %C %{D*&U*&A*} %{i*} %Z %i\
751 /* This contains cpp options which are common with cc1_options and are passed
752 only when preprocessing only to avoid duplication. We pass the cc1 spec
753 options to the preprocessor so that it the cc1 spec may manipulate
754 options used to set target flags. Those special target flags settings may
755 in turn cause preprocessor symbols to be defined specially. */
756 static const char *cpp_options =
757 "%(cpp_unique_options) %1 %{m*} %{std*} %{ansi} %{W*&pedantic*} %{w} %{f*}\
760 /* This contains cpp options which are not passed when the preprocessor
761 output will be used by another program. */
762 static const char *cpp_debug_options = "%{d*}";
764 /* NB: This is shared amongst all front-ends. */
765 static const char *cc1_options =
766 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
767 %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\
768 -auxbase%{c|S:%{o*:-strip %*}%{!o*: %b}}%{!c:%{!S: %b}}\
769 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*} %{ansi}\
770 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
771 %{Qn:-fno-ident} %{--help:--help}\
772 %{--target-help:--target-help}\
773 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
774 %{fsyntax-only:-o %j} %{-param*}";
776 static const char *asm_options =
777 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
779 static const char *invoke_as =
780 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
781 "%{!S:-o %|.s |\n as %(asm_options) %|.s %A }";
783 "%{!S:-o %|.s |\n as %(asm_options) %m.s %A }";
786 /* Some compilers have limits on line lengths, and the multilib_select
787 and/or multilib_matches strings can be very long, so we build them at
789 static struct obstack multilib_obstack;
790 static const char *multilib_select;
791 static const char *multilib_matches;
792 static const char *multilib_defaults;
793 static const char *multilib_exclusions;
794 #include "multilib.h"
796 /* Check whether a particular argument is a default argument. */
798 #ifndef MULTILIB_DEFAULTS
799 #define MULTILIB_DEFAULTS { "" }
802 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
804 #ifndef DRIVER_SELF_SPECS
805 #define DRIVER_SELF_SPECS ""
808 static const char *const driver_self_specs[] = { DRIVER_SELF_SPECS };
810 #ifndef OPTION_DEFAULT_SPECS
811 #define OPTION_DEFAULT_SPECS { "", "" }
820 static const struct default_spec
821 option_default_specs[] = { OPTION_DEFAULT_SPECS };
825 struct user_specs *next;
826 const char *filename;
829 static struct user_specs *user_specs_head, *user_specs_tail;
831 #ifndef SWITCH_TAKES_ARG
832 #define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR)
835 #ifndef WORD_SWITCH_TAKES_ARG
836 #define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
839 #ifdef HAVE_TARGET_EXECUTABLE_SUFFIX
840 /* This defines which switches stop a full compilation. */
841 #define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \
842 ((CHAR) == 'c' || (CHAR) == 'S')
844 #ifndef SWITCH_CURTAILS_COMPILATION
845 #define SWITCH_CURTAILS_COMPILATION(CHAR) \
846 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR)
850 /* Record the mapping from file suffixes for compilation specs. */
854 const char *suffix; /* Use this compiler for input files
855 whose names end in this suffix. */
857 const char *spec; /* To use this compiler, run this spec. */
859 const char *cpp_spec; /* If non-NULL, substitute this spec
860 for `%C', rather than the usual
864 /* Pointer to a vector of `struct compiler' that gives the spec for
865 compiling a file, based on its suffix.
866 A file that does not end in any of these suffixes will be passed
867 unchanged to the loader and nothing else will be done to it.
869 An entry containing two 0s is used to terminate the vector.
871 If multiple entries match a file, the last matching one is used. */
873 static struct compiler *compilers;
875 /* Number of entries in `compilers', not counting the null terminator. */
877 static int n_compilers;
879 /* The default list of file name suffixes and their compilation specs. */
881 static const struct compiler default_compilers[] =
883 /* Add lists of suffixes of known languages here. If those languages
884 were not present when we built the driver, we will hit these copies
885 and be given a more meaningful error than "file not used since
886 linking is not done". */
887 {".m", "#Objective-C", 0}, {".mi", "#Objective-C", 0},
888 {".cc", "#C++", 0}, {".cxx", "#C++", 0}, {".cpp", "#C++", 0},
889 {".cp", "#C++", 0}, {".c++", "#C++", 0}, {".C", "#C++", 0},
890 {".CPP", "#C++", 0}, {".ii", "#C++", 0},
891 {".ads", "#Ada", 0}, {".adb", "#Ada", 0},
892 {".f", "#Fortran", 0}, {".for", "#Fortran", 0}, {".fpp", "#Fortran", 0},
893 {".F", "#Fortran", 0}, {".FOR", "#Fortran", 0}, {".FPP", "#Fortran", 0},
894 {".r", "#Ratfor", 0},
895 {".p", "#Pascal", 0}, {".pas", "#Pascal", 0},
896 {".java", "#Java", 0}, {".class", "#Java", 0},
897 {".zip", "#Java", 0}, {".jar", "#Java", 0},
898 /* Next come the entries for C. */
901 /* cc1 has an integrated ISO C preprocessor. We should invoke the
902 external preprocessor if -save-temps is given. */
903 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
905 %{traditional|ftraditional:\
906 %eGNU C no longer supports -traditional without -E}\
907 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
908 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\
909 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} \
911 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
912 cc1 %(cpp_unique_options) %(cc1_options)}}}\
913 %{!fsyntax-only:%(invoke_as)}}}}", 0},
915 "%{!E:%e-E required when input is from standard input}\
916 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0},
917 {".h", "@c-header", 0},
919 /* cc1 has an integrated ISO C preprocessor. We should invoke the
920 external preprocessor if -save-temps is given. */
921 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
923 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
924 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\
925 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} \
927 -o %g.s %{!o*:--output-pch=%i.gch}\
928 %W{o*:--output-pch=%*}%V}\
929 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
930 cc1 %(cpp_unique_options) %(cc1_options)\
931 -o %g.s %{!o*:--output-pch=%i.gch}\
932 %W{o*:--output-pch=%*}%V}}}}}}", 0},
933 {".i", "@cpp-output", 0},
935 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0},
936 {".s", "@assembler", 0},
938 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0},
939 {".S", "@assembler-with-cpp", 0},
940 {"@assembler-with-cpp",
941 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
942 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
943 %{E|M|MM:%(cpp_debug_options)}\
944 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
945 as %(asm_debug) %(asm_options) %|.s %A }}}}"
947 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
948 %{E|M|MM:%(cpp_debug_options)}\
949 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
950 as %(asm_debug) %(asm_options) %m.s %A }}}}"
955 /* Mark end of table. */
959 /* Number of elements in default_compilers, not counting the terminator. */
961 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
963 /* A vector of options to give to the linker.
964 These options are accumulated by %x,
965 and substituted into the linker command with %X. */
966 static int n_linker_options;
967 static char **linker_options;
969 /* A vector of options to give to the assembler.
970 These options are accumulated by -Wa,
971 and substituted into the assembler command with %Y. */
972 static int n_assembler_options;
973 static char **assembler_options;
975 /* A vector of options to give to the preprocessor.
976 These options are accumulated by -Wp,
977 and substituted into the preprocessor command with %Z. */
978 static int n_preprocessor_options;
979 static char **preprocessor_options;
981 /* Define how to map long options into short ones. */
983 /* This structure describes one mapping. */
986 /* The long option's name. */
987 const char *const name;
988 /* The equivalent short option. */
989 const char *const equivalent;
990 /* Argument info. A string of flag chars; NULL equals no options.
991 a => argument required.
992 o => argument optional.
993 j => join argument to equivalent, making one word.
994 * => require other text after NAME as an argument. */
995 const char *const arg_info;
998 /* This is the table of mappings. Mappings are tried sequentially
999 for each option encountered; the first one that matches, wins. */
1001 static const struct option_map option_map[] =
1003 {"--all-warnings", "-Wall", 0},
1004 {"--ansi", "-ansi", 0},
1005 {"--assemble", "-S", 0},
1006 {"--assert", "-A", "a"},
1007 {"--classpath", "-fclasspath=", "aj"},
1008 {"--bootclasspath", "-fbootclasspath=", "aj"},
1009 {"--CLASSPATH", "-fclasspath=", "aj"},
1010 {"--comments", "-C", 0},
1011 {"--comments-in-macros", "-CC", 0},
1012 {"--compile", "-c", 0},
1013 {"--debug", "-g", "oj"},
1014 {"--define-macro", "-D", "aj"},
1015 {"--dependencies", "-M", 0},
1016 {"--dump", "-d", "a"},
1017 {"--dumpbase", "-dumpbase", "a"},
1018 {"--entry", "-e", 0},
1019 {"--extra-warnings", "-W", 0},
1020 {"--for-assembler", "-Wa", "a"},
1021 {"--for-linker", "-Xlinker", "a"},
1022 {"--force-link", "-u", "a"},
1023 {"--imacros", "-imacros", "a"},
1024 {"--include", "-include", "a"},
1025 {"--include-barrier", "-I-", 0},
1026 {"--include-directory", "-I", "aj"},
1027 {"--include-directory-after", "-idirafter", "a"},
1028 {"--include-prefix", "-iprefix", "a"},
1029 {"--include-with-prefix", "-iwithprefix", "a"},
1030 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
1031 {"--include-with-prefix-after", "-iwithprefix", "a"},
1032 {"--language", "-x", "a"},
1033 {"--library-directory", "-L", "a"},
1034 {"--machine", "-m", "aj"},
1035 {"--machine-", "-m", "*j"},
1036 {"--no-integrated-cpp", "-no-integrated-cpp", 0},
1037 {"--no-line-commands", "-P", 0},
1038 {"--no-precompiled-includes", "-noprecomp", 0},
1039 {"--no-standard-includes", "-nostdinc", 0},
1040 {"--no-standard-libraries", "-nostdlib", 0},
1041 {"--no-warnings", "-w", 0},
1042 {"--optimize", "-O", "oj"},
1043 {"--output", "-o", "a"},
1044 {"--output-class-directory", "-foutput-class-dir=", "ja"},
1045 {"--param", "--param", "a"},
1046 {"--pedantic", "-pedantic", 0},
1047 {"--pedantic-errors", "-pedantic-errors", 0},
1048 {"--pie", "-pie", 0},
1049 {"--pipe", "-pipe", 0},
1050 {"--prefix", "-B", "a"},
1051 {"--preprocess", "-E", 0},
1052 {"--print-search-dirs", "-print-search-dirs", 0},
1053 {"--print-file-name", "-print-file-name=", "aj"},
1054 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
1055 {"--print-missing-file-dependencies", "-MG", 0},
1056 {"--print-multi-lib", "-print-multi-lib", 0},
1057 {"--print-multi-directory", "-print-multi-directory", 0},
1058 {"--print-multi-os-directory", "-print-multi-os-directory", 0},
1059 {"--print-prog-name", "-print-prog-name=", "aj"},
1060 {"--profile", "-p", 0},
1061 {"--profile-blocks", "-a", 0},
1062 {"--quiet", "-q", 0},
1063 {"--resource", "-fcompile-resource=", "aj"},
1064 {"--save-temps", "-save-temps", 0},
1065 {"--shared", "-shared", 0},
1066 {"--silent", "-q", 0},
1067 {"--specs", "-specs=", "aj"},
1068 {"--static", "-static", 0},
1069 {"--std", "-std=", "aj"},
1070 {"--symbolic", "-symbolic", 0},
1071 {"--target", "-b", "a"},
1072 {"--time", "-time", 0},
1073 {"--trace-includes", "-H", 0},
1074 {"--traditional", "-traditional", 0},
1075 {"--traditional-cpp", "-traditional-cpp", 0},
1076 {"--trigraphs", "-trigraphs", 0},
1077 {"--undefine-macro", "-U", "aj"},
1078 {"--use-version", "-V", "a"},
1079 {"--user-dependencies", "-MM", 0},
1080 {"--verbose", "-v", 0},
1081 {"--warn-", "-W", "*j"},
1082 {"--write-dependencies", "-MD", 0},
1083 {"--write-user-dependencies", "-MMD", 0},
1088 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1089 static const struct {
1090 const char *const option_found;
1091 const char *const replacements;
1092 } target_option_translations[] =
1094 TARGET_OPTION_TRANSLATE_TABLE,
1099 /* Translate the options described by *ARGCP and *ARGVP.
1100 Make a new vector and store it back in *ARGVP,
1101 and store its length in *ARGVC. */
1104 translate_options (int *argcp, const char *const **argvp)
1108 const char *const *argv = *argvp;
1109 int newvsize = (argc + 2) * 2 * sizeof (const char *);
1111 (const char **) xmalloc (newvsize);
1115 newv[newindex++] = argv[i++];
1119 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1123 target_option_translations[tott_idx].option_found;
1126 if (strcmp (target_option_translations[tott_idx].option_found,
1133 for (sp = target_option_translations[tott_idx].replacements;
1140 newvsize += spaces * sizeof (const char *);
1141 newv = (const char **) xrealloc (newv, newvsize);
1143 sp = target_option_translations[tott_idx].replacements;
1152 newv[newindex++] = np;
1153 while (*np != ' ' && *np)
1164 if (target_option_translations[tott_idx].option_found)
1168 /* Translate -- options. */
1169 if (argv[i][0] == '-' && argv[i][1] == '-')
1172 /* Find a mapping that applies to this option. */
1173 for (j = 0; j < ARRAY_SIZE (option_map); j++)
1175 size_t optlen = strlen (option_map[j].name);
1176 size_t arglen = strlen (argv[i]);
1177 size_t complen = arglen > optlen ? optlen : arglen;
1178 const char *arginfo = option_map[j].arg_info;
1183 if (!strncmp (argv[i], option_map[j].name, complen))
1185 const char *arg = 0;
1187 if (arglen < optlen)
1190 for (k = j + 1; k < ARRAY_SIZE (option_map); k++)
1191 if (strlen (option_map[k].name) >= arglen
1192 && !strncmp (argv[i], option_map[k].name, arglen))
1194 error ("ambiguous abbreviation %s", argv[i]);
1198 if (k != ARRAY_SIZE (option_map))
1202 if (arglen > optlen)
1204 /* If the option has an argument, accept that. */
1205 if (argv[i][optlen] == '=')
1206 arg = argv[i] + optlen + 1;
1208 /* If this mapping requires extra text at end of name,
1209 accept that as "argument". */
1210 else if (strchr (arginfo, '*') != 0)
1211 arg = argv[i] + optlen;
1213 /* Otherwise, extra text at end means mismatch.
1214 Try other mappings. */
1219 else if (strchr (arginfo, '*') != 0)
1221 error ("incomplete `%s' option", option_map[j].name);
1225 /* Handle arguments. */
1226 if (strchr (arginfo, 'a') != 0)
1232 error ("missing argument to `%s' option",
1233 option_map[j].name);
1240 else if (strchr (arginfo, '*') != 0)
1242 else if (strchr (arginfo, 'o') == 0)
1245 error ("extraneous argument to `%s' option",
1246 option_map[j].name);
1250 /* Store the translation as one argv elt or as two. */
1251 if (arg != 0 && strchr (arginfo, 'j') != 0)
1252 newv[newindex++] = concat (option_map[j].equivalent, arg,
1256 newv[newindex++] = option_map[j].equivalent;
1257 newv[newindex++] = arg;
1260 newv[newindex++] = option_map[j].equivalent;
1268 /* Handle old-fashioned options--just copy them through,
1269 with their arguments. */
1270 else if (argv[i][0] == '-')
1272 const char *p = argv[i] + 1;
1276 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
1277 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
1278 else if (WORD_SWITCH_TAKES_ARG (p))
1279 nskip += WORD_SWITCH_TAKES_ARG (p);
1280 else if ((c == 'B' || c == 'b' || c == 'x')
1283 else if (! strcmp (p, "Xlinker"))
1285 else if (! strcmp (p, "Xpreprocessor"))
1287 else if (! strcmp (p, "Xassembler"))
1290 /* Watch out for an option at the end of the command line that
1291 is missing arguments, and avoid skipping past the end of the
1293 if (nskip + i > argc)
1298 newv[newindex++] = argv[i++];
1303 /* Ordinary operands, or +e options. */
1304 newv[newindex++] = argv[i++];
1314 skip_whitespace (char *p)
1318 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1319 be considered whitespace. */
1320 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1322 else if (*p == '\n' || *p == ' ' || *p == '\t')
1336 /* Structures to keep track of prefixes to try when looking for files. */
1340 const char *prefix; /* String to prepend to the path. */
1341 struct prefix_list *next; /* Next in linked list. */
1342 int require_machine_suffix; /* Don't use without machine_suffix. */
1343 /* 2 means try both machine_suffix and just_machine_suffix. */
1344 int *used_flag_ptr; /* 1 if a file was found with this prefix. */
1345 int priority; /* Sort key - priority within list. */
1346 int os_multilib; /* 1 if OS multilib scheme should be used,
1347 0 for GCC multilib scheme. */
1352 struct prefix_list *plist; /* List of prefixes to try */
1353 int max_len; /* Max length of a prefix in PLIST */
1354 const char *name; /* Name of this list (used in config stuff) */
1357 /* List of prefixes to try when looking for executables. */
1359 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1361 /* List of prefixes to try when looking for startup (crt0) files. */
1363 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1365 /* List of prefixes to try when looking for include files. */
1367 static struct path_prefix include_prefixes = { 0, 0, "include" };
1369 /* Suffix to attach to directories searched for commands.
1370 This looks like `MACHINE/VERSION/'. */
1372 static const char *machine_suffix = 0;
1374 /* Suffix to attach to directories searched for commands.
1375 This is just `MACHINE/'. */
1377 static const char *just_machine_suffix = 0;
1379 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1381 static const char *gcc_exec_prefix;
1383 /* Default prefixes to attach to command names. */
1385 #ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */
1386 #undef MD_EXEC_PREFIX
1387 #undef MD_STARTFILE_PREFIX
1388 #undef MD_STARTFILE_PREFIX_1
1391 /* If no prefixes defined, use the null string, which will disable them. */
1392 #ifndef MD_EXEC_PREFIX
1393 #define MD_EXEC_PREFIX ""
1395 #ifndef MD_STARTFILE_PREFIX
1396 #define MD_STARTFILE_PREFIX ""
1398 #ifndef MD_STARTFILE_PREFIX_1
1399 #define MD_STARTFILE_PREFIX_1 ""
1402 /* Supply defaults for the standard prefixes. */
1404 #ifndef STANDARD_EXEC_PREFIX
1405 #define STANDARD_EXEC_PREFIX "/usr/local/lib/gcc-lib/"
1407 #ifndef STANDARD_STARTFILE_PREFIX
1408 #define STANDARD_STARTFILE_PREFIX "/usr/local/lib/"
1410 #ifndef TOOLDIR_BASE_PREFIX
1411 #define TOOLDIR_BASE_PREFIX "/usr/local/"
1413 #ifndef STANDARD_BINDIR_PREFIX
1414 #define STANDARD_BINDIR_PREFIX "/usr/local/bin"
1417 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1418 static const char *const standard_exec_prefix_1 = "/usr/lib/gcc/";
1419 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1421 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1422 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1423 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1424 static const char *const standard_startfile_prefix_1 = "/lib/";
1425 static const char *const standard_startfile_prefix_2 = "/usr/lib/";
1427 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1428 static const char *tooldir_prefix;
1430 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1432 /* Subdirectory to use for locating libraries. Set by
1433 set_multilib_dir based on the compilation options. */
1435 static const char *multilib_dir;
1437 /* Subdirectory to use for locating libraries in OS conventions. Set by
1438 set_multilib_dir based on the compilation options. */
1440 static const char *multilib_os_dir;
1442 /* Structure to keep track of the specs that have been defined so far.
1443 These are accessed using %(specname) or %[specname] in a compiler
1448 /* The following 2 fields must be first */
1449 /* to allow EXTRA_SPECS to be initialized */
1450 const char *name; /* name of the spec. */
1451 const char *ptr; /* available ptr if no static pointer */
1453 /* The following fields are not initialized */
1454 /* by EXTRA_SPECS */
1455 const char **ptr_spec; /* pointer to the spec itself. */
1456 struct spec_list *next; /* Next spec in linked list. */
1457 int name_len; /* length of the name */
1458 int alloc_p; /* whether string was allocated */
1461 #define INIT_STATIC_SPEC(NAME,PTR) \
1462 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1464 /* List of statically defined specs. */
1465 static struct spec_list static_specs[] =
1467 INIT_STATIC_SPEC ("asm", &asm_spec),
1468 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1469 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1470 INIT_STATIC_SPEC ("asm_options", &asm_options),
1471 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1472 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1473 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1474 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1475 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1476 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1477 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1478 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1479 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1480 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1481 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1482 INIT_STATIC_SPEC ("link", &link_spec),
1483 INIT_STATIC_SPEC ("lib", &lib_spec),
1484 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1485 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1486 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces),
1487 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1488 INIT_STATIC_SPEC ("version", &compiler_version),
1489 INIT_STATIC_SPEC ("multilib", &multilib_select),
1490 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1491 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1492 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1493 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1494 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1495 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1496 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1497 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1498 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1499 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1500 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1501 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1502 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1505 #ifdef EXTRA_SPECS /* additional specs needed */
1506 /* Structure to keep track of just the first two args of a spec_list.
1507 That is all that the EXTRA_SPECS macro gives us. */
1510 const char *const name;
1511 const char *const ptr;
1514 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1515 static struct spec_list *extra_specs = (struct spec_list *) 0;
1518 /* List of dynamically allocates specs that have been defined so far. */
1520 static struct spec_list *specs = (struct spec_list *) 0;
1522 /* List of static spec functions. */
1524 static const struct spec_function static_spec_functions[] =
1526 { "if-exists", if_exists_spec_function },
1527 { "if-exists-else", if_exists_else_spec_function },
1531 static int processing_spec_function;
1533 /* Add appropriate libgcc specs to OBSTACK, taking into account
1534 various permutations of -shared-libgcc, -shared, and such. */
1536 #ifdef ENABLE_SHARED_LIBGCC
1538 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1539 const char *static_name, const char *eh_name)
1543 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name,
1544 "}%{!static:%{!static-libgcc:",
1545 "%{!shared:%{!shared-libgcc:", static_name, " ",
1546 eh_name, "}%{shared-libgcc:", shared_name, " ",
1547 static_name, "}}%{shared:",
1549 "%{shared-libgcc:", shared_name,
1550 "}%{!shared-libgcc:", static_name, "}",
1556 obstack_grow (obstack, buf, strlen (buf));
1559 #endif /* ENABLE_SHARED_LIBGCC */
1561 /* Initialize the specs lookup routines. */
1566 struct spec_list *next = (struct spec_list *) 0;
1567 struct spec_list *sl = (struct spec_list *) 0;
1571 return; /* Already initialized. */
1574 notice ("Using built-in specs.\n");
1577 extra_specs = (struct spec_list *)
1578 xcalloc (sizeof (struct spec_list), ARRAY_SIZE (extra_specs_1));
1580 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1582 sl = &extra_specs[i];
1583 sl->name = extra_specs_1[i].name;
1584 sl->ptr = extra_specs_1[i].ptr;
1586 sl->name_len = strlen (sl->name);
1587 sl->ptr_spec = &sl->ptr;
1592 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
1593 on ?: in file-scope variable initializations. */
1594 asm_debug = ASM_DEBUG_SPEC;
1596 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1598 sl = &static_specs[i];
1603 #ifdef ENABLE_SHARED_LIBGCC
1604 /* ??? If neither -shared-libgcc nor --static-libgcc was
1605 seen, then we should be making an educated guess. Some proposed
1606 heuristics for ELF include:
1608 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1609 program will be doing dynamic loading, which will likely
1610 need the shared libgcc.
1612 (2) If "-ldl", then it's also a fair bet that we're doing
1615 (3) For each ET_DYN we're linking against (either through -lfoo
1616 or /some/path/foo.so), check to see whether it or one of
1617 its dependencies depends on a shared libgcc.
1621 If the runtime is fixed to look for program headers instead
1622 of calling __register_frame_info at all, for each object,
1623 use the shared libgcc if any EH symbol referenced.
1625 If crtstuff is fixed to not invoke __register_frame_info
1626 automatically, for each object, use the shared libgcc if
1627 any non-empty unwind section found.
1629 Doing any of this probably requires invoking an external program to
1630 do the actual object file scanning. */
1632 const char *p = libgcc_spec;
1635 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1636 when given the proper command line arguments. */
1639 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1641 init_gcc_specs (&obstack,
1642 #ifdef NO_SHARED_LIBGCC_MULTILIB
1647 #ifdef USE_LIBUNWIND_EXCEPTIONS
1656 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1658 /* Ug. We don't know shared library extensions. Hope that
1659 systems that use this form don't do shared libraries. */
1660 init_gcc_specs (&obstack,
1661 #ifdef NO_SHARED_LIBGCC_MULTILIB
1674 obstack_1grow (&obstack, *p);
1675 in_sep = (*p == ' ');
1680 obstack_1grow (&obstack, '\0');
1681 libgcc_spec = obstack_finish (&obstack);
1684 #ifdef USE_AS_TRADITIONAL_FORMAT
1685 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1687 static const char tf[] = "--traditional-format ";
1688 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1689 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1690 asm_spec = obstack_finish (&obstack);
1694 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1695 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1696 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1697 link_spec = obstack_finish (&obstack);
1703 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1704 removed; If the spec starts with a + then SPEC is added to the end of the
1708 set_spec (const char *name, const char *spec)
1710 struct spec_list *sl;
1711 const char *old_spec;
1712 int name_len = strlen (name);
1715 /* If this is the first call, initialize the statically allocated specs. */
1718 struct spec_list *next = (struct spec_list *) 0;
1719 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1721 sl = &static_specs[i];
1728 /* See if the spec already exists. */
1729 for (sl = specs; sl; sl = sl->next)
1730 if (name_len == sl->name_len && !strcmp (sl->name, name))
1735 /* Not found - make it. */
1736 sl = (struct spec_list *) xmalloc (sizeof (struct spec_list));
1737 sl->name = xstrdup (name);
1738 sl->name_len = name_len;
1739 sl->ptr_spec = &sl->ptr;
1741 *(sl->ptr_spec) = "";
1746 old_spec = *(sl->ptr_spec);
1747 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1748 ? concat (old_spec, spec + 1, NULL)
1753 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1756 /* Free the old spec. */
1757 if (old_spec && sl->alloc_p)
1758 free ((void *) old_spec);
1763 /* Accumulate a command (program name and args), and run it. */
1765 /* Vector of pointers to arguments in the current line of specifications. */
1767 static const char **argbuf;
1769 /* Number of elements allocated in argbuf. */
1771 static int argbuf_length;
1773 /* Number of elements in argbuf currently in use (containing args). */
1775 static int argbuf_index;
1777 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1778 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1781 static struct temp_name {
1782 const char *suffix; /* suffix associated with the code. */
1783 int length; /* strlen (suffix). */
1784 int unique; /* Indicates whether %g or %u/%U was used. */
1785 const char *filename; /* associated filename. */
1786 int filename_length; /* strlen (filename). */
1787 struct temp_name *next;
1790 /* Number of commands executed so far. */
1792 static int execution_count;
1794 /* Number of commands that exited with a signal. */
1796 static int signal_count;
1798 /* Name with which this program was invoked. */
1800 static const char *programname;
1802 /* Allocate the argument vector. */
1808 argbuf = (const char **) xmalloc (argbuf_length * sizeof (const char *));
1811 /* Clear out the vector of arguments (after a command is executed). */
1819 /* Add one argument to the vector at the end.
1820 This is done when a space is seen or at the end of the line.
1821 If DELETE_ALWAYS is nonzero, the arg is a filename
1822 and the file should be deleted eventually.
1823 If DELETE_FAILURE is nonzero, the arg is a filename
1824 and the file should be deleted if this compilation fails. */
1827 store_arg (const char *arg, int delete_always, int delete_failure)
1829 if (argbuf_index + 1 == argbuf_length)
1831 = (const char **) xrealloc (argbuf,
1832 (argbuf_length *= 2) * sizeof (const char *));
1834 argbuf[argbuf_index++] = arg;
1835 argbuf[argbuf_index] = 0;
1837 if (delete_always || delete_failure)
1838 record_temp_file (arg, delete_always, delete_failure);
1841 /* Load specs from a file name named FILENAME, replacing occurrences of
1842 various different types of line-endings, \r\n, \n\r and just \r, with
1846 load_specs (const char *filename)
1850 struct stat statbuf;
1857 notice ("Reading specs from %s\n", filename);
1859 /* Open and stat the file. */
1860 desc = open (filename, O_RDONLY, 0);
1862 pfatal_with_name (filename);
1863 if (stat (filename, &statbuf) < 0)
1864 pfatal_with_name (filename);
1866 /* Read contents of file into BUFFER. */
1867 buffer = xmalloc ((unsigned) statbuf.st_size + 1);
1868 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1870 pfatal_with_name (filename);
1871 buffer[readlen] = 0;
1874 specs = xmalloc (readlen + 1);
1876 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1882 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1884 else if (*(buffer_p + 1) == '\n') /* \r\n */
1898 /* Read compilation specs from a file named FILENAME,
1899 replacing the default ones.
1901 A suffix which starts with `*' is a definition for
1902 one of the machine-specific sub-specs. The "suffix" should be
1903 *asm, *cc1, *cpp, *link, *startfile, etc.
1904 The corresponding spec is stored in asm_spec, etc.,
1905 rather than in the `compilers' vector.
1907 Anything invalid in the file is a fatal error. */
1910 read_specs (const char *filename, int main_p)
1915 buffer = load_specs (filename);
1917 /* Scan BUFFER for specs, putting them in the vector. */
1923 char *in, *out, *p1, *p2, *p3;
1925 /* Advance P in BUFFER to the next nonblank nocomment line. */
1926 p = skip_whitespace (p);
1930 /* Is this a special command that starts with '%'? */
1931 /* Don't allow this for the main specs file, since it would
1932 encourage people to overwrite it. */
1933 if (*p == '%' && !main_p)
1936 while (*p && *p != '\n')
1942 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1943 && (p1[sizeof "%include" - 1] == ' '
1944 || p1[sizeof "%include" - 1] == '\t'))
1948 p1 += sizeof ("%include");
1949 while (*p1 == ' ' || *p1 == '\t')
1952 if (*p1++ != '<' || p[-2] != '>')
1953 fatal ("specs %%include syntax malformed after %ld characters",
1954 (long) (p1 - buffer + 1));
1957 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, 0);
1958 read_specs (new_filename ? new_filename : p1, FALSE);
1961 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1962 && (p1[sizeof "%include_noerr" - 1] == ' '
1963 || p1[sizeof "%include_noerr" - 1] == '\t'))
1967 p1 += sizeof "%include_noerr";
1968 while (*p1 == ' ' || *p1 == '\t')
1971 if (*p1++ != '<' || p[-2] != '>')
1972 fatal ("specs %%include syntax malformed after %ld characters",
1973 (long) (p1 - buffer + 1));
1976 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, 0);
1978 read_specs (new_filename, FALSE);
1979 else if (verbose_flag)
1980 notice ("could not find specs file %s\n", p1);
1983 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1984 && (p1[sizeof "%rename" - 1] == ' '
1985 || p1[sizeof "%rename" - 1] == '\t'))
1988 struct spec_list *sl;
1989 struct spec_list *newsl;
1991 /* Get original name. */
1992 p1 += sizeof "%rename";
1993 while (*p1 == ' ' || *p1 == '\t')
1996 if (! ISALPHA ((unsigned char) *p1))
1997 fatal ("specs %%rename syntax malformed after %ld characters",
1998 (long) (p1 - buffer));
2001 while (*p2 && !ISSPACE ((unsigned char) *p2))
2004 if (*p2 != ' ' && *p2 != '\t')
2005 fatal ("specs %%rename syntax malformed after %ld characters",
2006 (long) (p2 - buffer));
2010 while (*p2 == ' ' || *p2 == '\t')
2013 if (! ISALPHA ((unsigned char) *p2))
2014 fatal ("specs %%rename syntax malformed after %ld characters",
2015 (long) (p2 - buffer));
2017 /* Get new spec name. */
2019 while (*p3 && !ISSPACE ((unsigned char) *p3))
2023 fatal ("specs %%rename syntax malformed after %ld characters",
2024 (long) (p3 - buffer));
2027 for (sl = specs; sl; sl = sl->next)
2028 if (name_len == sl->name_len && !strcmp (sl->name, p1))
2032 fatal ("specs %s spec was not found to be renamed", p1);
2034 if (strcmp (p1, p2) == 0)
2037 for (newsl = specs; newsl; newsl = newsl->next)
2038 if (strcmp (newsl->name, p2) == 0)
2039 fatal ("%s: attempt to rename spec '%s' to already defined spec '%s'",
2044 notice ("rename spec %s to %s\n", p1, p2);
2046 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
2050 set_spec (p2, *(sl->ptr_spec));
2052 free ((void *) *(sl->ptr_spec));
2054 *(sl->ptr_spec) = "";
2059 fatal ("specs unknown %% command after %ld characters",
2060 (long) (p1 - buffer));
2063 /* Find the colon that should end the suffix. */
2065 while (*p1 && *p1 != ':' && *p1 != '\n')
2068 /* The colon shouldn't be missing. */
2070 fatal ("specs file malformed after %ld characters",
2071 (long) (p1 - buffer));
2073 /* Skip back over trailing whitespace. */
2075 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
2078 /* Copy the suffix to a string. */
2079 suffix = save_string (p, p2 - p);
2080 /* Find the next line. */
2081 p = skip_whitespace (p1 + 1);
2083 fatal ("specs file malformed after %ld characters",
2084 (long) (p - buffer));
2087 /* Find next blank line or end of string. */
2088 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
2091 /* Specs end at the blank line and do not include the newline. */
2092 spec = save_string (p, p1 - p);
2095 /* Delete backslash-newline sequences from the spec. */
2100 if (in[0] == '\\' && in[1] == '\n')
2102 else if (in[0] == '#')
2103 while (*in && *in != '\n')
2111 if (suffix[0] == '*')
2113 if (! strcmp (suffix, "*link_command"))
2114 link_command_spec = spec;
2116 set_spec (suffix + 1, spec);
2120 /* Add this pair to the vector. */
2122 = ((struct compiler *)
2123 xrealloc (compilers,
2124 (n_compilers + 2) * sizeof (struct compiler)));
2126 compilers[n_compilers].suffix = suffix;
2127 compilers[n_compilers].spec = spec;
2129 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2133 link_command_spec = spec;
2136 if (link_command_spec == 0)
2137 fatal ("spec file has no spec for linking");
2140 /* Record the names of temporary files we tell compilers to write,
2141 and delete them at the end of the run. */
2143 /* This is the common prefix we use to make temp file names.
2144 It is chosen once for each run of this program.
2145 It is substituted into a spec by %g or %j.
2146 Thus, all temp file names contain this prefix.
2147 In practice, all temp file names start with this prefix.
2149 This prefix comes from the envvar TMPDIR if it is defined;
2150 otherwise, from the P_tmpdir macro if that is defined;
2151 otherwise, in /usr/tmp or /tmp;
2152 or finally the current directory if all else fails. */
2154 static const char *temp_filename;
2156 /* Length of the prefix. */
2158 static int temp_filename_length;
2160 /* Define the list of temporary files to delete. */
2165 struct temp_file *next;
2168 /* Queue of files to delete on success or failure of compilation. */
2169 static struct temp_file *always_delete_queue;
2170 /* Queue of files to delete on failure of compilation. */
2171 static struct temp_file *failure_delete_queue;
2173 /* Record FILENAME as a file to be deleted automatically.
2174 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2175 otherwise delete it in any case.
2176 FAIL_DELETE nonzero means delete it if a compilation step fails;
2177 otherwise delete it in any case. */
2180 record_temp_file (const char *filename, int always_delete, int fail_delete)
2182 char *const name = xstrdup (filename);
2186 struct temp_file *temp;
2187 for (temp = always_delete_queue; temp; temp = temp->next)
2188 if (! strcmp (name, temp->name))
2191 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
2192 temp->next = always_delete_queue;
2194 always_delete_queue = temp;
2201 struct temp_file *temp;
2202 for (temp = failure_delete_queue; temp; temp = temp->next)
2203 if (! strcmp (name, temp->name))
2206 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
2207 temp->next = failure_delete_queue;
2209 failure_delete_queue = temp;
2215 /* Delete all the temporary files whose names we previously recorded. */
2218 delete_if_ordinary (const char *name)
2224 printf ("Delete %s? (y or n) ", name);
2228 while ((c = getchar ()) != '\n' && c != EOF)
2231 if (i == 'y' || i == 'Y')
2233 if (stat (name, &st) >= 0 && S_ISREG (st.st_mode))
2234 if (unlink (name) < 0)
2236 perror_with_name (name);
2240 delete_temp_files (void)
2242 struct temp_file *temp;
2244 for (temp = always_delete_queue; temp; temp = temp->next)
2245 delete_if_ordinary (temp->name);
2246 always_delete_queue = 0;
2249 /* Delete all the files to be deleted on error. */
2252 delete_failure_queue (void)
2254 struct temp_file *temp;
2256 for (temp = failure_delete_queue; temp; temp = temp->next)
2257 delete_if_ordinary (temp->name);
2261 clear_failure_queue (void)
2263 failure_delete_queue = 0;
2266 /* Build a list of search directories from PATHS.
2267 PREFIX is a string to prepend to the list.
2268 If CHECK_DIR_P is nonzero we ensure the directory exists.
2269 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2270 It is also used by the --print-search-dirs flag. */
2273 build_search_list (struct path_prefix *paths, const char *prefix,
2276 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0;
2278 = (just_machine_suffix) ? strlen (just_machine_suffix) : 0;
2279 int first_time = TRUE;
2280 struct prefix_list *pprefix;
2282 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2283 obstack_1grow (&collect_obstack, '=');
2285 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next)
2287 int len = strlen (pprefix->prefix);
2291 || is_directory (pprefix->prefix, machine_suffix, 0)))
2294 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2297 obstack_grow (&collect_obstack, pprefix->prefix, len);
2298 obstack_grow (&collect_obstack, machine_suffix, suffix_len);
2301 if (just_machine_suffix
2302 && pprefix->require_machine_suffix == 2
2304 || is_directory (pprefix->prefix, just_machine_suffix, 0)))
2307 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2310 obstack_grow (&collect_obstack, pprefix->prefix, len);
2311 obstack_grow (&collect_obstack, just_machine_suffix,
2315 if (! pprefix->require_machine_suffix)
2318 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2321 obstack_grow (&collect_obstack, pprefix->prefix, len);
2325 obstack_1grow (&collect_obstack, '\0');
2326 return obstack_finish (&collect_obstack);
2329 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2333 putenv_from_prefixes (struct path_prefix *paths, const char *env_var)
2335 putenv (build_search_list (paths, env_var, 1));
2338 /* Check whether NAME can be accessed in MODE. This is like access,
2339 except that it never considers directories to be executable. */
2342 access_check (const char *name, int mode)
2348 if (stat (name, &st) < 0
2349 || S_ISDIR (st.st_mode))
2353 return access (name, mode);
2356 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2357 access to check permissions.
2358 Return 0 if not found, otherwise return its name, allocated with malloc. */
2361 find_a_file (struct path_prefix *pprefix, const char *name, int mode,
2365 const char *const file_suffix =
2366 ((mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "");
2367 struct prefix_list *pl;
2368 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1;
2369 const char *multilib_name, *multilib_os_name;
2371 #ifdef DEFAULT_ASSEMBLER
2372 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2373 return xstrdup (DEFAULT_ASSEMBLER);
2376 #ifdef DEFAULT_LINKER
2377 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2378 return xstrdup (DEFAULT_LINKER);
2382 len += strlen (machine_suffix);
2384 multilib_name = name;
2385 multilib_os_name = name;
2386 if (multilib && multilib_os_dir)
2388 int len1 = multilib_dir ? strlen (multilib_dir) + 1 : 0;
2389 int len2 = strlen (multilib_os_dir) + 1;
2391 len += len1 > len2 ? len1 : len2;
2393 multilib_name = ACONCAT ((multilib_dir, dir_separator_str, name,
2395 if (strcmp (multilib_os_dir, ".") != 0)
2396 multilib_os_name = ACONCAT ((multilib_os_dir, dir_separator_str, name,
2400 temp = xmalloc (len);
2402 /* Determine the filename to execute (special case for absolute paths). */
2404 if (IS_ABSOLUTE_PATH (name))
2406 if (access (name, mode) == 0)
2408 strcpy (temp, name);
2413 for (pl = pprefix->plist; pl; pl = pl->next)
2415 const char *this_name
2416 = pl->os_multilib ? multilib_os_name : multilib_name;
2420 /* Some systems have a suffix for executable files.
2421 So try appending that first. */
2422 if (file_suffix[0] != 0)
2424 strcpy (temp, pl->prefix);
2425 strcat (temp, machine_suffix);
2426 strcat (temp, multilib_name);
2427 strcat (temp, file_suffix);
2428 if (access_check (temp, mode) == 0)
2430 if (pl->used_flag_ptr != 0)
2431 *pl->used_flag_ptr = 1;
2436 /* Now try just the multilib_name. */
2437 strcpy (temp, pl->prefix);
2438 strcat (temp, machine_suffix);
2439 strcat (temp, multilib_name);
2440 if (access_check (temp, mode) == 0)
2442 if (pl->used_flag_ptr != 0)
2443 *pl->used_flag_ptr = 1;
2448 /* Certain prefixes are tried with just the machine type,
2449 not the version. This is used for finding as, ld, etc. */
2450 if (just_machine_suffix && pl->require_machine_suffix == 2)
2452 /* Some systems have a suffix for executable files.
2453 So try appending that first. */
2454 if (file_suffix[0] != 0)
2456 strcpy (temp, pl->prefix);
2457 strcat (temp, just_machine_suffix);
2458 strcat (temp, multilib_name);
2459 strcat (temp, file_suffix);
2460 if (access_check (temp, mode) == 0)
2462 if (pl->used_flag_ptr != 0)
2463 *pl->used_flag_ptr = 1;
2468 strcpy (temp, pl->prefix);
2469 strcat (temp, just_machine_suffix);
2470 strcat (temp, multilib_name);
2471 if (access_check (temp, mode) == 0)
2473 if (pl->used_flag_ptr != 0)
2474 *pl->used_flag_ptr = 1;
2479 /* Certain prefixes can't be used without the machine suffix
2480 when the machine or version is explicitly specified. */
2481 if (! pl->require_machine_suffix)
2483 /* Some systems have a suffix for executable files.
2484 So try appending that first. */
2485 if (file_suffix[0] != 0)
2487 strcpy (temp, pl->prefix);
2488 strcat (temp, this_name);
2489 strcat (temp, file_suffix);
2490 if (access_check (temp, mode) == 0)
2492 if (pl->used_flag_ptr != 0)
2493 *pl->used_flag_ptr = 1;
2498 strcpy (temp, pl->prefix);
2499 strcat (temp, this_name);
2500 if (access_check (temp, mode) == 0)
2502 if (pl->used_flag_ptr != 0)
2503 *pl->used_flag_ptr = 1;
2513 /* Ranking of prefixes in the sort list. -B prefixes are put before
2516 enum path_prefix_priority
2518 PREFIX_PRIORITY_B_OPT,
2519 PREFIX_PRIORITY_LAST
2522 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2523 order according to PRIORITY. Within each PRIORITY, new entries are
2526 If WARN is nonzero, we will warn if no file is found
2527 through this prefix. WARN should point to an int
2528 which will be set to 1 if this entry is used.
2530 COMPONENT is the value to be passed to update_path.
2532 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2533 the complete value of machine_suffix.
2534 2 means try both machine_suffix and just_machine_suffix. */
2537 add_prefix (struct path_prefix *pprefix, const char *prefix,
2538 const char *component, /* enum prefix_priority */ int priority,
2539 int require_machine_suffix, int *warn, int os_multilib)
2541 struct prefix_list *pl, **prev;
2544 for (prev = &pprefix->plist;
2545 (*prev) != NULL && (*prev)->priority <= priority;
2546 prev = &(*prev)->next)
2549 /* Keep track of the longest prefix. */
2551 prefix = update_path (prefix, component);
2552 len = strlen (prefix);
2553 if (len > pprefix->max_len)
2554 pprefix->max_len = len;
2556 pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
2557 pl->prefix = prefix;
2558 pl->require_machine_suffix = require_machine_suffix;
2559 pl->used_flag_ptr = warn;
2560 pl->priority = priority;
2561 pl->os_multilib = os_multilib;
2565 /* Insert after PREV. */
2570 /* Same as add_prefix, but prepending target_system_root to prefix. */
2572 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2573 const char *component,
2574 /* enum prefix_priority */ int priority,
2575 int require_machine_suffix, int *warn, int os_multilib)
2577 if (!IS_ABSOLUTE_PATH (prefix))
2580 if (target_system_root)
2582 if (target_sysroot_suffix)
2583 prefix = concat (target_sysroot_suffix, prefix, NULL);
2584 prefix = concat (target_system_root, prefix, NULL);
2586 /* We have to override this because GCC's notion of sysroot
2587 moves along with GCC. */
2591 add_prefix (pprefix, prefix, component, priority,
2592 require_machine_suffix, warn, os_multilib);
2595 /* Execute the command specified by the arguments on the current line of spec.
2596 When using pipes, this includes several piped-together commands
2597 with `|' between them.
2599 Return 0 if successful, -1 if failed. */
2605 int n_commands; /* # of command. */
2609 const char *prog; /* program name. */
2610 const char **argv; /* vector of args. */
2611 int pid; /* pid of process for this command. */
2614 struct command *commands; /* each command buffer with above info. */
2616 if (processing_spec_function)
2619 /* Count # of piped commands. */
2620 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2621 if (strcmp (argbuf[i], "|") == 0)
2624 /* Get storage for each command. */
2625 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2627 /* Split argbuf into its separate piped processes,
2628 and record info about each one.
2629 Also search for the programs that are to be run. */
2631 commands[0].prog = argbuf[0]; /* first command. */
2632 commands[0].argv = &argbuf[0];
2633 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, 0);
2636 commands[0].argv[0] = string;
2638 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2639 if (strcmp (argbuf[i], "|") == 0)
2640 { /* each command. */
2641 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2642 fatal ("-pipe not supported");
2644 argbuf[i] = 0; /* termination of command args. */
2645 commands[n_commands].prog = argbuf[i + 1];
2646 commands[n_commands].argv = &argbuf[i + 1];
2647 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2650 commands[n_commands].argv[0] = string;
2654 argbuf[argbuf_index] = 0;
2656 /* If -v, print what we are about to do, and maybe query. */
2660 /* For help listings, put a blank line between sub-processes. */
2661 if (print_help_list)
2662 fputc ('\n', stderr);
2664 /* Print each piped command as a separate line. */
2665 for (i = 0; i < n_commands; i++)
2667 const char *const *j;
2669 if (verbose_only_flag)
2671 for (j = commands[i].argv; *j; j++)
2674 fprintf (stderr, " \"");
2675 for (p = *j; *p; ++p)
2677 if (*p == '"' || *p == '\\' || *p == '$')
2678 fputc ('\\', stderr);
2681 fputc ('"', stderr);
2685 for (j = commands[i].argv; *j; j++)
2686 fprintf (stderr, " %s", *j);
2688 /* Print a pipe symbol after all but the last command. */
2689 if (i + 1 != n_commands)
2690 fprintf (stderr, " |");
2691 fprintf (stderr, "\n");
2694 if (verbose_only_flag != 0)
2697 notice ("\nGo ahead? (y or n) ");
2701 while (getchar () != '\n')
2704 if (i != 'y' && i != 'Y')
2709 #ifdef ENABLE_VALGRIND_CHECKING
2710 /* Run the each command through valgrind. To simplify prepending the
2711 path to valgrind and the option "-q" (for quiet operation unless
2712 something triggers), we allocate a separate argv array. */
2714 for (i = 0; i < n_commands; i++)
2720 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2723 argv = alloca ((argc + 3) * sizeof (char *));
2725 argv[0] = VALGRIND_PATH;
2727 for (j = 2; j < argc + 2; j++)
2728 argv[j] = commands[i].argv[j - 2];
2731 commands[i].argv = argv;
2732 commands[i].prog = argv[0];
2736 /* Run each piped subprocess. */
2738 for (i = 0; i < n_commands; i++)
2740 char *errmsg_fmt, *errmsg_arg;
2741 const char *string = commands[i].argv[0];
2743 /* For some bizarre reason, the second argument of execvp() is
2744 char *const *, not const char *const *. */
2745 commands[i].pid = pexecute (string, (char *const *) commands[i].argv,
2746 programname, temp_filename,
2747 &errmsg_fmt, &errmsg_arg,
2748 ((i == 0 ? PEXECUTE_FIRST : 0)
2749 | (i + 1 == n_commands ? PEXECUTE_LAST : 0)
2750 | (string == commands[i].prog
2751 ? PEXECUTE_SEARCH : 0)
2752 | (verbose_flag ? PEXECUTE_VERBOSE : 0)));
2754 if (commands[i].pid == -1)
2755 pfatal_pexecute (errmsg_fmt, errmsg_arg);
2757 if (string != commands[i].prog)
2758 free ((void *) string);
2763 /* Wait for all the subprocesses to finish.
2764 We don't care what order they finish in;
2765 we know that N_COMMANDS waits will get them all.
2766 Ignore subprocesses that we don't know about,
2767 since they can be spawned by the process that exec'ed us. */
2771 #ifdef HAVE_GETRUSAGE
2773 double ut = 0.0, st = 0.0;
2776 for (i = 0; i < n_commands;)
2782 pid = pwait (commands[i].pid, &status, 0);
2786 #ifdef HAVE_GETRUSAGE
2789 /* getrusage returns the total resource usage of all children
2790 up to now. Copy the previous values into prus, get the
2791 current statistics, then take the difference. */
2794 getrusage (RUSAGE_CHILDREN, &rus);
2795 d.tv_sec = rus.ru_utime.tv_sec - prus.ru_utime.tv_sec;
2796 d.tv_usec = rus.ru_utime.tv_usec - prus.ru_utime.tv_usec;
2797 ut = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2799 d.tv_sec = rus.ru_stime.tv_sec - prus.ru_stime.tv_sec;
2800 d.tv_usec = rus.ru_stime.tv_usec - prus.ru_stime.tv_usec;
2801 st = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2805 for (j = 0; j < n_commands; j++)
2806 if (commands[j].pid == pid)
2809 if (WIFSIGNALED (status))
2812 /* SIGPIPE is a special case. It happens in -pipe mode
2813 when the compiler dies before the preprocessor is
2814 done, or the assembler dies before the compiler is
2815 done. There's generally been an error already, and
2816 this is just fallout. So don't generate another error
2817 unless we would otherwise have succeeded. */
2818 if (WTERMSIG (status) == SIGPIPE
2819 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2824 Internal error: %s (program %s)\n\
2825 Please submit a full bug report.\n\
2826 See %s for instructions.",
2827 strsignal (WTERMSIG (status)), commands[j].prog,
2832 else if (WIFEXITED (status)
2833 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2835 if (WEXITSTATUS (status) > greatest_status)
2836 greatest_status = WEXITSTATUS (status);
2839 #ifdef HAVE_GETRUSAGE
2840 if (report_times && ut + st != 0)
2841 notice ("# %s %.2f %.2f\n", commands[j].prog, ut, st);
2850 /* Find all the switches given to us
2851 and make a vector describing them.
2852 The elements of the vector are strings, one per switch given.
2853 If a switch uses following arguments, then the `part1' field
2854 is the switch itself and the `args' field
2855 is a null-terminated vector containing the following arguments.
2856 The `live_cond' field is:
2858 1 if the switch is true in a conditional spec,
2859 -1 if false (overridden by a later switch)
2860 -2 if this switch should be ignored (used in %<S)
2861 The `validated' field is nonzero if any spec has looked at this switch;
2862 if it remains zero at the end of the run, it must be meaningless. */
2865 #define SWITCH_FALSE -1
2866 #define SWITCH_IGNORE -2
2867 #define SWITCH_LIVE 1
2874 unsigned char validated;
2875 unsigned char ordering;
2878 static struct switchstr *switches;
2880 static int n_switches;
2885 const char *language;
2888 /* Also a vector of input files specified. */
2890 static struct infile *infiles;
2894 /* This counts the number of libraries added by lang_specific_driver, so that
2895 we can tell if there were any user supplied any files or libraries. */
2897 static int added_libraries;
2899 /* And a vector of corresponding output files is made up later. */
2901 const char **outfiles;
2903 /* Used to track if none of the -B paths are used. */
2906 /* Gives value to pass as "warn" to add_prefix for standard prefixes. */
2907 static int *warn_std_ptr = 0;
2909 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2911 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2912 is true if we should look for an executable suffix. DO_OBJ
2913 is true if we should look for an object suffix. */
2916 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
2917 int do_obj ATTRIBUTE_UNUSED)
2919 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2927 len = strlen (name);
2929 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2930 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2931 if (do_obj && len > 2
2932 && name[len - 2] == '.'
2933 && name[len - 1] == 'o')
2935 obstack_grow (&obstack, name, len - 2);
2936 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2937 name = obstack_finish (&obstack);
2941 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2942 /* If there is no filetype, make it the executable suffix (which includes
2943 the "."). But don't get confused if we have just "-o". */
2944 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
2947 for (i = len - 1; i >= 0; i--)
2948 if (IS_DIR_SEPARATOR (name[i]))
2951 for (i++; i < len; i++)
2955 obstack_grow (&obstack, name, len);
2956 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
2957 strlen (TARGET_EXECUTABLE_SUFFIX));
2958 name = obstack_finish (&obstack);
2965 /* Display the command line switches accepted by gcc. */
2969 printf (_("Usage: %s [options] file...\n"), programname);
2970 fputs (_("Options:\n"), stdout);
2972 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
2973 fputs (_(" --help Display this information\n"), stdout);
2974 fputs (_(" --target-help Display target specific command line options\n"), stdout);
2976 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
2977 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
2978 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
2979 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
2980 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
2981 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
2982 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
2983 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
2984 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
2986 -print-multi-lib Display the mapping between command line options and\n\
2987 multiple library search directories\n"), stdout);
2988 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
2989 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
2990 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
2991 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
2992 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
2993 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
2994 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
2995 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
2996 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
2997 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
2998 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
2999 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3000 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3001 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
3002 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
3003 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3004 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3005 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3006 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3007 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3008 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3010 -x <language> Specify the language of the following input files\n\
3011 Permissible languages include: c c++ assembler none\n\
3012 'none' means revert to the default behavior of\n\
3013 guessing the language based on the file's extension\n\
3017 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3018 passed on to the various sub-processes invoked by %s. In order to pass\n\
3019 other options on to these processes the -W<letter> options must be used.\n\
3022 /* The rest of the options are displayed by invocations of the various
3027 add_preprocessor_option (const char *option, int len)
3029 n_preprocessor_options++;
3031 if (! preprocessor_options)
3032 preprocessor_options
3033 = (char **) xmalloc (n_preprocessor_options * sizeof (char *));
3035 preprocessor_options
3036 = (char **) xrealloc (preprocessor_options,
3037 n_preprocessor_options * sizeof (char *));
3039 preprocessor_options [n_preprocessor_options - 1] =
3040 save_string (option, len);
3044 add_assembler_option (const char *option, int len)
3046 n_assembler_options++;
3048 if (! assembler_options)
3050 = (char **) xmalloc (n_assembler_options * sizeof (char *));
3053 = (char **) xrealloc (assembler_options,
3054 n_assembler_options * sizeof (char *));
3056 assembler_options [n_assembler_options - 1] = save_string (option, len);
3060 add_linker_option (const char *option, int len)
3064 if (! linker_options)
3066 = (char **) xmalloc (n_linker_options * sizeof (char *));
3069 = (char **) xrealloc (linker_options,
3070 n_linker_options * sizeof (char *));
3072 linker_options [n_linker_options - 1] = save_string (option, len);
3075 /* Create the vector `switches' and its contents.
3076 Store its length in `n_switches'. */
3079 process_command (int argc, const char *const *argv)
3084 const char *spec_lang = 0;
3085 int last_language_n_infiles;
3088 int lang_n_infiles = 0;
3089 #ifdef MODIFY_TARGET_NAME
3090 int is_modify_target_name;
3094 GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3098 added_libraries = 0;
3100 /* Figure compiler version from version string. */
3102 compiler_version = temp1 = xstrdup (version_string);
3104 for (; *temp1; ++temp1)
3113 /* If there is a -V or -b option (or both), process it now, before
3114 trying to interpret the rest of the command line. */
3115 if (argc > 1 && argv[1][0] == '-'
3116 && (argv[1][1] == 'V' || argv[1][1] == 'b'))
3118 const char *new_version = DEFAULT_TARGET_VERSION;
3119 const char *new_machine = DEFAULT_TARGET_MACHINE;
3120 const char *progname = argv[0];
3125 while (argc > 1 && argv[1][0] == '-'
3126 && (argv[1][1] == 'V' || argv[1][1] == 'b'))
3128 char opt = argv[1][1];
3130 if (argv[1][2] != '\0')
3143 fatal ("`-%c' option must have argument", opt);
3150 for (baselen = strlen (progname); baselen > 0; baselen--)
3151 if (IS_DIR_SEPARATOR (progname[baselen-1]))
3153 new_argv0 = xmemdup (progname, baselen,
3154 baselen + concat_length (new_version, new_machine,
3155 "-gcc-", NULL) + 1);
3156 strcpy (new_argv0 + baselen, new_machine);
3157 strcat (new_argv0, "-gcc-");
3158 strcat (new_argv0, new_version);
3160 new_argv = xmemdup (argv, (argc + 1) * sizeof (argv[0]),
3161 (argc + 1) * sizeof (argv[0]));
3162 new_argv[0] = new_argv0;
3164 execvp (new_argv0, new_argv);
3165 fatal ("couldn't run `%s': %s", new_argv0, xstrerror (errno));
3168 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3169 see if we can create it from the pathname specified in argv[0]. */
3172 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3173 if (!gcc_exec_prefix)
3175 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
3176 standard_exec_prefix);
3177 if (gcc_exec_prefix)
3178 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3182 if (gcc_exec_prefix)
3184 int len = strlen (gcc_exec_prefix);
3186 if (len > (int) sizeof ("/lib/gcc-lib/") - 1
3187 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3189 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc-lib/") + 1;
3190 if (IS_DIR_SEPARATOR (*temp)
3191 && strncmp (temp + 1, "lib", 3) == 0
3192 && IS_DIR_SEPARATOR (temp[4])
3193 && strncmp (temp + 5, "gcc-lib", 7) == 0)
3194 len -= sizeof ("/lib/gcc-lib/") - 1;
3197 set_std_prefix (gcc_exec_prefix, len);
3198 add_prefix (&exec_prefixes, gcc_exec_prefix, "GCC",
3199 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3200 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3201 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3204 /* COMPILER_PATH and LIBRARY_PATH have values
3205 that are lists of directory names with colons. */
3207 GET_ENVIRONMENT (temp, "COMPILER_PATH");
3210 const char *startp, *endp;
3211 char *nstore = (char *) alloca (strlen (temp) + 3);
3213 startp = endp = temp;
3216 if (*endp == PATH_SEPARATOR || *endp == 0)
3218 strncpy (nstore, startp, endp - startp);
3220 strcpy (nstore, concat (".", dir_separator_str, NULL));
3221 else if (!IS_DIR_SEPARATOR (endp[-1]))
3223 nstore[endp - startp] = DIR_SEPARATOR;
3224 nstore[endp - startp + 1] = 0;
3227 nstore[endp - startp] = 0;
3228 add_prefix (&exec_prefixes, nstore, 0,
3229 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3230 add_prefix (&include_prefixes,
3231 concat (nstore, "include", NULL),
3232 0, PREFIX_PRIORITY_LAST, 0, NULL, 0);
3235 endp = startp = endp + 1;
3242 GET_ENVIRONMENT (temp, LIBRARY_PATH_ENV);
3243 if (temp && *cross_compile == '0')
3245 const char *startp, *endp;
3246 char *nstore = (char *) alloca (strlen (temp) + 3);
3248 startp = endp = temp;
3251 if (*endp == PATH_SEPARATOR || *endp == 0)
3253 strncpy (nstore, startp, endp - startp);
3255 strcpy (nstore, concat (".", dir_separator_str, NULL));
3256 else if (!IS_DIR_SEPARATOR (endp[-1]))
3258 nstore[endp - startp] = DIR_SEPARATOR;
3259 nstore[endp - startp + 1] = 0;
3262 nstore[endp - startp] = 0;
3263 add_prefix (&startfile_prefixes, nstore, NULL,
3264 PREFIX_PRIORITY_LAST, 0, NULL, 1);
3267 endp = startp = endp + 1;
3274 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3275 GET_ENVIRONMENT (temp, "LPATH");
3276 if (temp && *cross_compile == '0')
3278 const char *startp, *endp;
3279 char *nstore = (char *) alloca (strlen (temp) + 3);
3281 startp = endp = temp;
3284 if (*endp == PATH_SEPARATOR || *endp == 0)
3286 strncpy (nstore, startp, endp - startp);
3288 strcpy (nstore, concat (".", dir_separator_str, NULL));
3289 else if (!IS_DIR_SEPARATOR (endp[-1]))
3291 nstore[endp - startp] = DIR_SEPARATOR;
3292 nstore[endp - startp + 1] = 0;
3295 nstore[endp - startp] = 0;
3296 add_prefix (&startfile_prefixes, nstore, NULL,
3297 PREFIX_PRIORITY_LAST, 0, NULL, 1);
3300 endp = startp = endp + 1;
3307 /* Convert new-style -- options to old-style. */
3308 translate_options (&argc, &argv);
3310 /* Do language-specific adjustment/addition of flags. */
3311 lang_specific_driver (&argc, &argv, &added_libraries);
3313 /* Scan argv twice. Here, the first time, just count how many switches
3314 there will be in their vector, and how many input files in theirs.
3315 Here we also parse the switches that cc itself uses (e.g. -v). */
3317 for (i = 1; i < argc; i++)
3319 if (! strcmp (argv[i], "-dumpspecs"))
3321 struct spec_list *sl;
3323 for (sl = specs; sl; sl = sl->next)
3324 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3325 if (link_command_spec)
3326 printf ("*link_command:\n%s\n\n", link_command_spec);
3329 else if (! strcmp (argv[i], "-dumpversion"))
3331 printf ("%s\n", spec_version);
3334 else if (! strcmp (argv[i], "-dumpmachine"))
3336 printf ("%s\n", spec_machine);
3339 else if (strcmp (argv[i], "-fversion") == 0)
3341 /* translate_options () has turned --version into -fversion. */
3342 printf (_("%s (GCC) %s\n"), programname, version_string);
3343 fputs (_("Copyright (C) 2003 Free Software Foundation, Inc.\n"),
3345 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
3346 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
3350 else if (strcmp (argv[i], "-fhelp") == 0)
3352 /* translate_options () has turned --help into -fhelp. */
3353 print_help_list = 1;
3355 /* We will be passing a dummy file on to the sub-processes. */
3359 /* CPP driver cannot obtain switch from cc1_options. */
3361 add_preprocessor_option ("--help", 6);
3362 add_assembler_option ("--help", 6);
3363 add_linker_option ("--help", 6);
3365 else if (strcmp (argv[i], "-ftarget-help") == 0)
3367 /* translate_options() has turned --target-help into -ftarget-help. */
3368 target_help_flag = 1;
3370 /* We will be passing a dummy file on to the sub-processes. */
3374 /* CPP driver cannot obtain switch from cc1_options. */
3376 add_preprocessor_option ("--target-help", 13);
3377 add_assembler_option ("--target-help", 13);
3378 add_linker_option ("--target-help", 13);
3380 else if (! strcmp (argv[i], "-pass-exit-codes"))
3382 pass_exit_codes = 1;
3385 else if (! strcmp (argv[i], "-print-search-dirs"))
3386 print_search_dirs = 1;
3387 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3388 print_file_name = "libgcc.a";
3389 else if (! strncmp (argv[i], "-print-file-name=", 17))
3390 print_file_name = argv[i] + 17;
3391 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3392 print_prog_name = argv[i] + 17;
3393 else if (! strcmp (argv[i], "-print-multi-lib"))
3394 print_multi_lib = 1;
3395 else if (! strcmp (argv[i], "-print-multi-directory"))
3396 print_multi_directory = 1;
3397 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3398 print_multi_os_directory = 1;
3399 else if (! strncmp (argv[i], "-Wa,", 4))
3402 /* Pass the rest of this option to the assembler. */
3404 /* Split the argument at commas. */
3406 for (j = 4; argv[i][j]; j++)
3407 if (argv[i][j] == ',')
3409 add_assembler_option (argv[i] + prev, j - prev);
3413 /* Record the part after the last comma. */
3414 add_assembler_option (argv[i] + prev, j - prev);
3416 else if (! strncmp (argv[i], "-Wp,", 4))
3419 /* Pass the rest of this option to the preprocessor. */
3421 /* Split the argument at commas. */
3423 for (j = 4; argv[i][j]; j++)
3424 if (argv[i][j] == ',')
3426 add_preprocessor_option (argv[i] + prev, j - prev);
3430 /* Record the part after the last comma. */
3431 add_preprocessor_option (argv[i] + prev, j - prev);
3433 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3434 /* The +e options to the C++ front-end. */
3436 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3439 /* Split the argument at commas. */
3440 for (j = 3; argv[i][j]; j++)
3441 n_infiles += (argv[i][j] == ',');
3443 else if (strcmp (argv[i], "-Xlinker") == 0)
3446 fatal ("argument to `-Xlinker' is missing");
3451 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3454 fatal ("argument to `-Xpreprocessor' is missing");
3456 add_preprocessor_option (argv[i+1], strlen (argv[i+1]));
3458 else if (strcmp (argv[i], "-Xassembler") == 0)
3461 fatal ("argument to `-Xassembler' is missing");
3463 add_assembler_option (argv[i+1], strlen (argv[i+1]));
3465 else if (strcmp (argv[i], "-l") == 0)
3468 fatal ("argument to `-l' is missing");
3473 else if (strncmp (argv[i], "-l", 2) == 0)
3475 else if (strcmp (argv[i], "-save-temps") == 0)
3477 save_temps_flag = 1;
3480 else if (strcmp (argv[i], "-specs") == 0)
3482 struct user_specs *user = (struct user_specs *)
3483 xmalloc (sizeof (struct user_specs));
3485 fatal ("argument to `-specs' is missing");
3487 user->next = (struct user_specs *) 0;
3488 user->filename = argv[i];
3489 if (user_specs_tail)
3490 user_specs_tail->next = user;
3492 user_specs_head = user;
3493 user_specs_tail = user;
3495 else if (strncmp (argv[i], "-specs=", 7) == 0)
3497 struct user_specs *user = (struct user_specs *)
3498 xmalloc (sizeof (struct user_specs));
3499 if (strlen (argv[i]) == 7)
3500 fatal ("argument to `-specs=' is missing");
3502 user->next = (struct user_specs *) 0;
3503 user->filename = argv[i] + 7;
3504 if (user_specs_tail)
3505 user_specs_tail->next = user;
3507 user_specs_head = user;
3508 user_specs_tail = user;
3510 else if (strcmp (argv[i], "-time") == 0)
3512 else if (strcmp (argv[i], "-pipe") == 0)
3514 /* -pipe has to go into the switches array as well as
3519 else if (strcmp (argv[i], "-###") == 0)
3521 /* This is similar to -v except that there is no execution
3522 of the commands and the echoed arguments are quoted. It
3523 is intended for use in shell scripts to capture the
3524 driver-generated command line. */
3525 verbose_only_flag++;
3528 else if (argv[i][0] == '-' && argv[i][1] != 0)
3530 const char *p = &argv[i][1];
3537 fatal ("`-%c' must come at the start of the command line", c);
3545 if (p[1] == 0 && i + 1 == argc)
3546 fatal ("argument to `-B' is missing");
3552 len = strlen (value);
3554 /* Catch the case where the user has forgotten to append a
3555 directory separator to the path. Note, they may be using
3556 -B to add an executable name prefix, eg "i386-elf-", in
3557 order to distinguish between multiple installations of
3558 GCC in the same directory. Hence we must check to see
3559 if appending a directory separator actually makes a
3560 valid directory name. */
3561 if (! IS_DIR_SEPARATOR (value [len - 1])
3562 && is_directory (value, "", 0))
3564 char *tmp = xmalloc (len + 2);
3565 strcpy (tmp, value);
3566 tmp[len] = DIR_SEPARATOR;
3571 /* As a kludge, if the arg is "[foo/]stageN/", just
3572 add "[foo/]include" to the include prefix. */
3575 && (IS_DIR_SEPARATOR (value[len - 8]))))
3576 && strncmp (value + len - 7, "stage", 5) == 0
3577 && ISDIGIT (value[len - 2])
3578 && (IS_DIR_SEPARATOR (value[len - 1])))
3581 add_prefix (&include_prefixes, "include", NULL,
3582 PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3585 char * string = xmalloc (len + 1);
3587 strncpy (string, value, len - 7);
3588 strcpy (string + len - 7, "include");
3589 add_prefix (&include_prefixes, string, NULL,
3590 PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3594 add_prefix (&exec_prefixes, value, NULL,
3595 PREFIX_PRIORITY_B_OPT, 0, &warn_B, 0);
3596 add_prefix (&startfile_prefixes, value, NULL,
3597 PREFIX_PRIORITY_B_OPT, 0, &warn_B, 0);
3598 add_prefix (&include_prefixes, concat (value, "include", NULL),
3599 NULL, PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3604 case 'v': /* Print our subcommands and print versions. */
3606 /* If they do anything other than exactly `-v', don't set
3607 verbose_flag; rather, continue on to give the error. */
3625 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3630 /* Forward scan, just in case -S or -c is specified
3637 if (argv[j][0] == '-')
3639 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
3645 else if ((skip = SWITCH_TAKES_ARG (argv[j][1])))
3646 j += skip - (argv[j][2] != 0);
3647 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1)))
3654 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3656 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0);
3658 argv[i] = convert_filename (argv[i], ! have_c, 0);
3665 #ifdef MODIFY_TARGET_NAME
3666 is_modify_target_name = 0;
3668 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3669 if (! strcmp (argv[i], modify_target[j].sw))
3672 = (char *) xmalloc (strlen (modify_target[j].str)
3673 + strlen (spec_machine));
3676 int made_addition = 0;
3678 is_modify_target_name = 1;
3679 for (p = spec_machine, q = new_name; *p != 0; )
3681 if (modify_target[j].add_del == DELETE
3682 && (! strncmp (q, modify_target[j].str,
3683 strlen (modify_target[j].str))))
3684 p += strlen (modify_target[j].str);
3685 else if (modify_target[j].add_del == ADD
3686 && ! made_addition && *p == '-')
3688 for (r = modify_target[j].str; *r != 0; )
3696 spec_machine = new_name;
3699 if (is_modify_target_name)
3705 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
3706 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
3707 else if (WORD_SWITCH_TAKES_ARG (p))
3708 i += WORD_SWITCH_TAKES_ARG (p);
3718 if (have_c && have_o && lang_n_infiles > 1)
3719 fatal ("cannot specify -o with -c or -S and multiple compilations");
3721 if ((save_temps_flag || report_times) && use_pipes)
3723 /* -save-temps overrides -pipe, so that temp files are produced */
3724 if (save_temps_flag)
3725 error ("warning: -pipe ignored because -save-temps specified");
3726 /* -time overrides -pipe because we can't get correct stats when
3727 multiple children are running at once. */
3728 else if (report_times)
3729 error ("warning: -pipe ignored because -time specified");
3734 /* Set up the search paths before we go looking for config files. */
3736 /* These come before the md prefixes so that we will find gcc's subcommands
3737 (such as cpp) rather than those of the host system. */
3738 /* Use 2 as fourth arg meaning try just the machine as a suffix,
3739 as well as trying the machine and the version. */
3741 add_prefix (&exec_prefixes, standard_exec_prefix, "GCC",
3742 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3743 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3744 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3745 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS",
3746 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3749 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3750 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3751 add_prefix (&startfile_prefixes, standard_exec_prefix_1, "BINUTILS",
3752 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3754 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3755 dir_separator_str, NULL);
3757 /* If tooldir is relative, base it on exec_prefixes. A relative
3758 tooldir lets us move the installed tree as a unit.
3760 If GCC_EXEC_PREFIX is defined, then we want to add two relative
3761 directories, so that we can search both the user specified directory
3762 and the standard place. */
3764 if (!IS_ABSOLUTE_PATH (tooldir_prefix))
3766 if (gcc_exec_prefix)
3768 char *gcc_exec_tooldir_prefix
3769 = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
3770 spec_version, dir_separator_str, tooldir_prefix, NULL);
3772 add_prefix (&exec_prefixes,
3773 concat (gcc_exec_tooldir_prefix, "bin",
3774 dir_separator_str, NULL),
3775 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 0);
3776 add_prefix (&startfile_prefixes,
3777 concat (gcc_exec_tooldir_prefix, "lib",
3778 dir_separator_str, NULL),
3779 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
3782 tooldir_prefix = concat (standard_exec_prefix, spec_machine,
3783 dir_separator_str, spec_version,
3784 dir_separator_str, tooldir_prefix, NULL);
3787 add_prefix (&exec_prefixes,
3788 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3789 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 0);
3790 add_prefix (&startfile_prefixes,
3791 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3792 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
3794 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
3795 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
3796 then consider it to relocate with the rest of the GCC installation
3797 if GCC_EXEC_PREFIX is set.
3798 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
3799 if (target_system_root && gcc_exec_prefix)
3801 char *tmp_prefix = make_relative_prefix (argv[0],
3802 standard_bindir_prefix,
3803 target_system_root);
3804 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
3806 target_system_root = tmp_prefix;
3807 target_system_root_changed = 1;
3812 /* More prefixes are enabled in main, after we read the specs file
3813 and determine whether this is cross-compilation or not. */
3815 /* Then create the space for the vectors and scan again. */
3817 switches = ((struct switchstr *)
3818 xmalloc ((n_switches + 1) * sizeof (struct switchstr)));
3819 infiles = (struct infile *) xmalloc ((n_infiles + 1) * sizeof (struct infile));
3822 last_language_n_infiles = -1;
3824 /* This, time, copy the text of each switch and store a pointer
3825 to the copy in the vector of switches.
3826 Store all the infiles in their vector. */
3828 for (i = 1; i < argc; i++)
3830 /* Just skip the switches that were handled by the preceding loop. */
3831 #ifdef MODIFY_TARGET_NAME
3832 is_modify_target_name = 0;
3834 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3835 if (! strcmp (argv[i], modify_target[j].sw))
3836 is_modify_target_name = 1;
3838 if (is_modify_target_name)
3842 if (! strncmp (argv[i], "-Wa,", 4))
3844 else if (! strncmp (argv[i], "-Wp,", 4))
3846 else if (! strcmp (argv[i], "-pass-exit-codes"))
3848 else if (! strcmp (argv[i], "-print-search-dirs"))
3850 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3852 else if (! strncmp (argv[i], "-print-file-name=", 17))
3854 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3856 else if (! strcmp (argv[i], "-print-multi-lib"))
3858 else if (! strcmp (argv[i], "-print-multi-directory"))
3860 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3862 else if (! strcmp (argv[i], "-ftarget-help"))
3864 else if (! strcmp (argv[i], "-fhelp"))
3866 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3868 /* Compensate for the +e options to the C++ front-end;
3869 they're there simply for cfront call-compatibility. We do
3870 some magic in default_compilers to pass them down properly.
3871 Note we deliberately start at the `+' here, to avoid passing
3872 -e0 or -e1 down into the linker. */
3873 switches[n_switches].part1 = &argv[i][0];
3874 switches[n_switches].args = 0;
3875 switches[n_switches].live_cond = SWITCH_OK;
3876 switches[n_switches].validated = 0;
3879 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3882 /* Split the argument at commas. */
3884 for (j = 4; argv[i][j]; j++)
3885 if (argv[i][j] == ',')
3887 infiles[n_infiles].language = "*";
3888 infiles[n_infiles++].name
3889 = save_string (argv[i] + prev, j - prev);
3892 /* Record the part after the last comma. */
3893 infiles[n_infiles].language = "*";
3894 infiles[n_infiles++].name = argv[i] + prev;
3896 else if (strcmp (argv[i], "-Xlinker") == 0)
3898 infiles[n_infiles].language = "*";
3899 infiles[n_infiles++].name = argv[++i];
3901 else if (strcmp (argv[i], "-Xassembler") == 0)
3903 infiles[n_infiles].language = "*";
3904 infiles[n_infiles++].name = argv[++i];
3906 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3908 infiles[n_infiles].language = "*";
3909 infiles[n_infiles++].name = argv[++i];
3911 else if (strcmp (argv[i], "-l") == 0)
3912 { /* POSIX allows separation of -l and the lib arg;
3913 canonicalize by concatenating -l with its arg */
3914 infiles[n_infiles].language = "*";
3915 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL);
3917 else if (strncmp (argv[i], "-l", 2) == 0)
3919 infiles[n_infiles].language = "*";
3920 infiles[n_infiles++].name = argv[i];
3922 else if (strcmp (argv[i], "-specs") == 0)
3924 else if (strncmp (argv[i], "-specs=", 7) == 0)
3926 else if (strcmp (argv[i], "-time") == 0)
3928 else if (strcmp (argv[i], "-###") == 0)
3930 else if (argv[i][0] == '-' && argv[i][1] != 0)
3932 const char *p = &argv[i][1];
3937 if (p[1] == 0 && i + 1 == argc)
3938 fatal ("argument to `-x' is missing");
3940 spec_lang = argv[++i];
3943 if (! strcmp (spec_lang, "none"))
3944 /* Suppress the warning if -xnone comes after the last input
3945 file, because alternate command interfaces like g++ might
3946 find it useful to place -xnone after each input file. */
3949 last_language_n_infiles = n_infiles;
3952 switches[n_switches].part1 = p;
3953 /* Deal with option arguments in separate argv elements. */
3954 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
3955 || WORD_SWITCH_TAKES_ARG (p))
3958 int n_args = WORD_SWITCH_TAKES_ARG (p);
3962 /* Count only the option arguments in separate argv elements. */
3963 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
3965 if (i + n_args >= argc)
3966 fatal ("argument to `-%s' is missing", p);
3967 switches[n_switches].args
3968 = (const char **) xmalloc ((n_args + 1) * sizeof(const char *));
3970 switches[n_switches].args[j++] = argv[++i];
3971 /* Null-terminate the vector. */
3972 switches[n_switches].args[j] = 0;
3974 else if (strchr (switches_need_spaces, c))
3976 /* On some systems, ld cannot handle some options without
3977 a space. So split the option from its argument. */
3978 char *part1 = (char *) xmalloc (2);
3982 switches[n_switches].part1 = part1;
3983 switches[n_switches].args
3984 = (const char **) xmalloc (2 * sizeof (const char *));
3985 switches[n_switches].args[0] = xstrdup (p+1);
3986 switches[n_switches].args[1] = 0;
3989 switches[n_switches].args = 0;
3991 switches[n_switches].live_cond = SWITCH_OK;
3992 switches[n_switches].validated = 0;
3993 switches[n_switches].ordering = 0;
3994 /* These are always valid, since gcc.c itself understands them. */
3995 if (!strcmp (p, "save-temps")
3996 || !strcmp (p, "static-libgcc")
3997 || !strcmp (p, "shared-libgcc")
3998 || !strcmp (p, "pipe"))
3999 switches[n_switches].validated = 1;
4002 char ch = switches[n_switches].part1[0];
4004 switches[n_switches].validated = 1;
4010 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4011 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
4014 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
4016 perror_with_name (argv[i]);
4021 infiles[n_infiles].language = spec_lang;
4022 infiles[n_infiles++].name = argv[i];
4027 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4028 error ("warning: `-x %s' after last input file has no effect", spec_lang);
4030 /* Ensure we only invoke each subprocess once. */
4031 if (target_help_flag || print_help_list)
4035 /* Create a dummy input file, so that we can pass --target-help on to
4036 the various sub-processes. */
4037 infiles[0].language = "c";
4038 infiles[0].name = "help-dummy";
4040 if (target_help_flag)
4042 switches[n_switches].part1 = "--target-help";
4043 switches[n_switches].args = 0;
4044 switches[n_switches].live_cond = SWITCH_OK;
4045 switches[n_switches].validated = 0;
4050 if (print_help_list)
4052 switches[n_switches].part1 = "--help";
4053 switches[n_switches].args = 0;
4054 switches[n_switches].live_cond = SWITCH_OK;
4055 switches[n_switches].validated = 0;
4061 switches[n_switches].part1 = 0;
4062 infiles[n_infiles].name = 0;
4065 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4066 and place that in the environment. */
4069 set_collect_gcc_options (void)
4074 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4076 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4077 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4080 for (i = 0; (int) i < n_switches; i++)
4082 const char *const *args;
4085 obstack_grow (&collect_obstack, " ", 1);
4089 /* Ignore elided switches. */
4090 if (switches[i].live_cond == SWITCH_IGNORE)
4093 obstack_grow (&collect_obstack, "'-", 2);
4094 q = switches[i].part1;
4095 while ((p = strchr (q, '\'')))
4097 obstack_grow (&collect_obstack, q, p - q);
4098 obstack_grow (&collect_obstack, "'\\''", 4);
4101 obstack_grow (&collect_obstack, q, strlen (q));
4102 obstack_grow (&collect_obstack, "'", 1);
4104 for (args = switches[i].args; args && *args; args++)
4106 obstack_grow (&collect_obstack, " '", 2);
4108 while ((p = strchr (q, '\'')))
4110 obstack_grow (&collect_obstack, q, p - q);
4111 obstack_grow (&collect_obstack, "'\\''", 4);
4114 obstack_grow (&collect_obstack, q, strlen (q));
4115 obstack_grow (&collect_obstack, "'", 1);
4118 obstack_grow (&collect_obstack, "\0", 1);
4119 putenv (obstack_finish (&collect_obstack));
4122 /* Process a spec string, accumulating and running commands. */
4124 /* These variables describe the input file name.
4125 input_file_number is the index on outfiles of this file,
4126 so that the output file name can be stored for later use by %o.
4127 input_basename is the start of the part of the input file
4128 sans all directory names, and basename_length is the number
4129 of characters starting there excluding the suffix .c or whatever. */
4131 static const char *input_filename;
4132 static int input_file_number;
4133 size_t input_filename_length;
4134 static int basename_length;
4135 static int suffixed_basename_length;
4136 static const char *input_basename;
4137 static const char *input_suffix;
4138 static struct stat input_stat;
4139 static int input_stat_set;
4141 /* The compiler used to process the current input file. */
4142 static struct compiler *input_file_compiler;
4144 /* These are variables used within do_spec and do_spec_1. */
4146 /* Nonzero if an arg has been started and not yet terminated
4147 (with space, tab or newline). */
4148 static int arg_going;
4150 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4151 is a temporary file name. */
4152 static int delete_this_arg;
4154 /* Nonzero means %w has been seen; the next arg to be terminated
4155 is the output file name of this compilation. */
4156 static int this_is_output_file;
4158 /* Nonzero means %s has been seen; the next arg to be terminated
4159 is the name of a library file and we should try the standard
4160 search dirs for it. */
4161 static int this_is_library_file;
4163 /* Nonzero means that the input of this command is coming from a pipe. */
4164 static int input_from_pipe;
4166 /* Nonnull means substitute this for any suffix when outputting a switches
4168 static const char *suffix_subst;
4170 /* Process the spec SPEC and run the commands specified therein.
4171 Returns 0 if the spec is successfully processed; -1 if failed. */
4174 do_spec (const char *spec)
4178 value = do_spec_2 (spec);
4180 /* Force out any unfinished command.
4181 If -pipe, this forces out the last command if it ended in `|'. */
4184 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4187 set_collect_gcc_options ();
4189 if (argbuf_index > 0)
4197 do_spec_2 (const char *spec)
4204 delete_this_arg = 0;
4205 this_is_output_file = 0;
4206 this_is_library_file = 0;
4207 input_from_pipe = 0;
4208 suffix_subst = NULL;
4210 result = do_spec_1 (spec, 0, NULL);
4212 /* End any pending argument. */
4215 obstack_1grow (&obstack, 0);
4216 string = obstack_finish (&obstack);
4217 if (this_is_library_file)
4218 string = find_file (string);
4219 store_arg (string, delete_this_arg, this_is_output_file);
4220 if (this_is_output_file)
4221 outfiles[input_file_number] = string;
4229 /* Process the given spec string and add any new options to the end
4230 of the switches/n_switches array. */
4233 do_option_spec (const char *name, const char *spec)
4235 unsigned int i, value_count, value_len;
4236 const char *p, *q, *value;
4237 char *tmp_spec, *tmp_spec_p;
4239 if (configure_default_options[0].name == NULL)
4242 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4243 if (strcmp (configure_default_options[i].name, name) == 0)
4245 if (i == ARRAY_SIZE (configure_default_options))
4248 value = configure_default_options[i].value;
4249 value_len = strlen (value);
4251 /* Compute the size of the final spec. */
4254 while ((p = strstr (p, "%(VALUE)")) != NULL)
4260 /* Replace each %(VALUE) by the specified value. */
4261 tmp_spec = alloca (strlen (spec) + 1
4262 + value_count * (value_len - strlen ("%(VALUE)")));
4263 tmp_spec_p = tmp_spec;
4265 while ((p = strstr (q, "%(VALUE)")) != NULL)
4267 memcpy (tmp_spec_p, q, p - q);
4268 tmp_spec_p = tmp_spec_p + (p - q);
4269 memcpy (tmp_spec_p, value, value_len);
4270 tmp_spec_p += value_len;
4271 q = p + strlen ("%(VALUE)");
4273 strcpy (tmp_spec_p, q);
4275 do_self_spec (tmp_spec);
4278 /* Process the given spec string and add any new options to the end
4279 of the switches/n_switches array. */
4282 do_self_spec (const char *spec)
4285 do_spec_1 (" ", 0, NULL);
4287 if (argbuf_index > 0)
4292 n_switches += argbuf_index;
4293 switches = xrealloc (switches,
4294 sizeof (struct switchstr) * (n_switches + 1));
4296 switches[n_switches] = switches[first];
4297 for (i = 0; i < argbuf_index; i++)
4299 struct switchstr *sw;
4301 /* Each switch should start with '-'. */
4302 if (argbuf[i][0] != '-')
4305 sw = &switches[i + first];
4306 sw->part1 = &argbuf[i][1];
4308 sw->live_cond = SWITCH_OK;
4315 /* Process the sub-spec SPEC as a portion of a larger spec.
4316 This is like processing a whole spec except that we do
4317 not initialize at the beginning and we do not supply a
4318 newline by default at the end.
4319 INSWITCH nonzero means don't process %-sequences in SPEC;
4320 in this case, % is treated as an ordinary character.
4321 This is used while substituting switches.
4322 INSWITCH nonzero also causes SPC not to terminate an argument.
4324 Value is zero unless a line was finished
4325 and the command on that line reported an error. */
4328 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4330 const char *p = spec;
4337 /* If substituting a switch, treat all chars like letters.
4338 Otherwise, NL, SPC, TAB and % are special. */
4339 switch (inswitch ? 'a' : c)
4342 /* End of line: finish any pending argument,
4343 then run the pending command if one has been started. */
4346 obstack_1grow (&obstack, 0);
4347 string = obstack_finish (&obstack);
4348 if (this_is_library_file)
4349 string = find_file (string);
4350 store_arg (string, delete_this_arg, this_is_output_file);
4351 if (this_is_output_file)
4352 outfiles[input_file_number] = string;
4356 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4358 /* A `|' before the newline means use a pipe here,
4359 but only if -pipe was specified.
4360 Otherwise, execute now and don't pass the `|' as an arg. */
4363 input_from_pipe = 1;
4370 set_collect_gcc_options ();
4372 if (argbuf_index > 0)
4378 /* Reinitialize for a new command, and for a new argument. */
4381 delete_this_arg = 0;
4382 this_is_output_file = 0;
4383 this_is_library_file = 0;
4384 input_from_pipe = 0;
4388 /* End any pending argument. */
4391 obstack_1grow (&obstack, 0);
4392 string = obstack_finish (&obstack);
4393 if (this_is_library_file)
4394 string = find_file (string);
4395 store_arg (string, delete_this_arg, this_is_output_file);
4396 if (this_is_output_file)
4397 outfiles[input_file_number] = string;
4401 obstack_1grow (&obstack, c);
4407 /* Space or tab ends an argument if one is pending. */
4410 obstack_1grow (&obstack, 0);
4411 string = obstack_finish (&obstack);
4412 if (this_is_library_file)
4413 string = find_file (string);
4414 store_arg (string, delete_this_arg, this_is_output_file);
4415 if (this_is_output_file)
4416 outfiles[input_file_number] = string;
4418 /* Reinitialize for a new argument. */
4420 delete_this_arg = 0;
4421 this_is_output_file = 0;
4422 this_is_library_file = 0;
4429 fatal ("invalid specification! Bug in cc");
4432 obstack_grow (&obstack, input_basename, basename_length);
4437 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4442 delete_this_arg = 2;
4445 /* Dump out the directories specified with LIBRARY_PATH,
4446 followed by the absolute directories
4447 that we search for startfiles. */
4450 struct prefix_list *pl = startfile_prefixes.plist;
4451 size_t bufsize = 100;
4452 char *buffer = (char *) xmalloc (bufsize);
4455 for (; pl; pl = pl->next)
4457 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4458 /* Used on systems which record the specified -L dirs
4459 and use them to search for dynamic linking. */
4460 /* Relative directories always come from -B,
4461 and it is better not to use them for searching
4462 at run time. In particular, stage1 loses. */
4463 if (!IS_ABSOLUTE_PATH (pl->prefix))
4466 /* Try subdirectory if there is one. */
4467 if (multilib_dir != NULL
4468 || (pl->os_multilib && multilib_os_dir != NULL))
4470 const char *multi_dir;
4472 multi_dir = pl->os_multilib ? multilib_os_dir
4474 if (machine_suffix && multilib_dir)
4476 if (strlen (pl->prefix) + strlen (machine_suffix)
4478 bufsize = (strlen (pl->prefix)
4479 + strlen (machine_suffix)) * 2 + 1;
4480 buffer = (char *) xrealloc (buffer, bufsize);
4481 strcpy (buffer, pl->prefix);
4482 strcat (buffer, machine_suffix);
4483 if (is_directory (buffer, multilib_dir, 1))
4485 do_spec_1 ("-L", 0, NULL);
4486 #ifdef SPACE_AFTER_L_OPTION
4487 do_spec_1 (" ", 0, NULL);
4489 do_spec_1 (buffer, 1, NULL);
4490 do_spec_1 (multilib_dir, 1, NULL);
4491 /* Make this a separate argument. */
4492 do_spec_1 (" ", 0, NULL);
4495 if (!pl->require_machine_suffix)
4497 if (is_directory (pl->prefix, multi_dir, 1))
4499 do_spec_1 ("-L", 0, NULL);
4500 #ifdef SPACE_AFTER_L_OPTION
4501 do_spec_1 (" ", 0, NULL);
4503 do_spec_1 (pl->prefix, 1, NULL);
4504 do_spec_1 (multi_dir, 1, NULL);
4505 /* Make this a separate argument. */
4506 do_spec_1 (" ", 0, NULL);
4512 if (is_directory (pl->prefix, machine_suffix, 1))
4514 do_spec_1 ("-L", 0, NULL);
4515 #ifdef SPACE_AFTER_L_OPTION
4516 do_spec_1 (" ", 0, NULL);
4518 do_spec_1 (pl->prefix, 1, NULL);
4519 /* Remove slash from machine_suffix. */
4520 if (strlen (machine_suffix) >= bufsize)
4521 bufsize = strlen (machine_suffix) * 2 + 1;
4522 buffer = (char *) xrealloc (buffer, bufsize);
4523 strcpy (buffer, machine_suffix);
4524 idx = strlen (buffer);
4525 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4526 buffer[idx - 1] = 0;
4527 do_spec_1 (buffer, 1, NULL);
4528 /* Make this a separate argument. */
4529 do_spec_1 (" ", 0, NULL);
4532 if (!pl->require_machine_suffix)
4534 if (is_directory (pl->prefix, "", 1))
4536 do_spec_1 ("-L", 0, NULL);
4537 #ifdef SPACE_AFTER_L_OPTION
4538 do_spec_1 (" ", 0, NULL);
4540 /* Remove slash from pl->prefix. */
4541 if (strlen (pl->prefix) >= bufsize)
4542 bufsize = strlen (pl->prefix) * 2 + 1;
4543 buffer = (char *) xrealloc (buffer, bufsize);
4544 strcpy (buffer, pl->prefix);
4545 idx = strlen (buffer);
4546 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4547 buffer[idx - 1] = 0;
4548 do_spec_1 (buffer, 1, NULL);
4549 /* Make this a separate argument. */
4550 do_spec_1 (" ", 0, NULL);
4559 /* %efoo means report an error with `foo' as error message
4560 and don't execute any more commands for this file. */
4564 while (*p != 0 && *p != '\n')
4566 buf = (char *) alloca (p - q + 1);
4567 strncpy (buf, q, p - q);
4574 /* %nfoo means report a notice with `foo' on stderr. */
4578 while (*p != 0 && *p != '\n')
4580 buf = (char *) alloca (p - q + 1);
4581 strncpy (buf, q, p - q);
4583 notice ("%s\n", buf);
4593 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4594 defined, and it is not a directory, and it is
4595 writable, use it. Otherwise, treat this like any
4596 other temporary file. */
4598 if ((!save_temps_flag)
4599 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4600 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4602 obstack_grow (&obstack, HOST_BIT_BUCKET,
4603 strlen (HOST_BIT_BUCKET));
4604 delete_this_arg = 0;
4609 goto create_temp_file;
4613 obstack_1grow (&obstack, '-');
4614 delete_this_arg = 0;
4617 /* consume suffix */
4618 while (*p == '.' || ISALPHA ((unsigned char) *p))
4620 if (p[0] == '%' && p[1] == 'O')
4625 goto create_temp_file;
4629 /* consume suffix */
4630 while (*p == '.' || ISALPHA ((unsigned char) *p))
4632 if (p[0] == '%' && p[1] == 'O')
4637 goto create_temp_file;
4643 struct temp_name *t;
4645 const char *suffix = p;
4646 char *saved_suffix = NULL;
4648 while (*p == '.' || ISALPHA ((unsigned char) *p))
4650 suffix_length = p - suffix;
4651 if (p[0] == '%' && p[1] == 'O')
4654 /* We don't support extra suffix characters after %O. */
4655 if (*p == '.' || ISALPHA ((unsigned char) *p))
4657 if (suffix_length == 0)
4658 suffix = TARGET_OBJECT_SUFFIX;
4662 = (char *) xmalloc (suffix_length
4663 + strlen (TARGET_OBJECT_SUFFIX));
4664 strncpy (saved_suffix, suffix, suffix_length);
4665 strcpy (saved_suffix + suffix_length,
4666 TARGET_OBJECT_SUFFIX);
4668 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4671 /* If the input_filename has the same suffix specified
4672 for the %g, %u, or %U, and -save-temps is specified,
4673 we could end up using that file as an intermediate
4674 thus clobbering the user's source file (.e.g.,
4675 gcc -save-temps foo.s would clobber foo.s with the
4676 output of cpp0). So check for this condition and
4677 generate a temp file as the intermediate. */
4679 if (save_temps_flag)
4681 temp_filename_length = basename_length + suffix_length;
4682 temp_filename = alloca (temp_filename_length + 1);
4683 strncpy ((char *) temp_filename, input_basename, basename_length);
4684 strncpy ((char *) temp_filename + basename_length, suffix,
4686 *((char *) temp_filename + temp_filename_length) = '\0';
4687 if (strcmp (temp_filename, input_filename) != 0)
4689 struct stat st_temp;
4691 /* Note, set_input() resets input_stat_set to 0. */
4692 if (input_stat_set == 0)
4694 input_stat_set = stat (input_filename, &input_stat);
4695 if (input_stat_set >= 0)
4699 /* If we have the stat for the input_filename
4700 and we can do the stat for the temp_filename
4701 then the they could still refer to the same
4702 file if st_dev/st_ino's are the same. */
4704 if (input_stat_set != 1
4705 || stat (temp_filename, &st_temp) < 0
4706 || input_stat.st_dev != st_temp.st_dev
4707 || input_stat.st_ino != st_temp.st_ino)
4709 temp_filename = save_string (temp_filename,
4710 temp_filename_length + 1);
4711 obstack_grow (&obstack, temp_filename,
4712 temp_filename_length);
4714 delete_this_arg = 0;
4720 /* See if we already have an association of %g/%u/%U and
4722 for (t = temp_names; t; t = t->next)
4723 if (t->length == suffix_length
4724 && strncmp (t->suffix, suffix, suffix_length) == 0
4725 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
4728 /* Make a new association if needed. %u and %j
4730 if (t == 0 || c == 'u' || c == 'j')
4734 t = (struct temp_name *) xmalloc (sizeof (struct temp_name));
4735 t->next = temp_names;
4738 t->length = suffix_length;
4741 t->suffix = saved_suffix;
4742 saved_suffix = NULL;
4745 t->suffix = save_string (suffix, suffix_length);
4746 t->unique = (c == 'u' || c == 'U' || c == 'j');
4747 temp_filename = make_temp_file (t->suffix);
4748 temp_filename_length = strlen (temp_filename);
4749 t->filename = temp_filename;
4750 t->filename_length = temp_filename_length;
4754 free (saved_suffix);
4756 obstack_grow (&obstack, t->filename, t->filename_length);
4757 delete_this_arg = 1;
4763 obstack_grow (&obstack, input_filename, input_filename_length);
4769 struct prefix_list *pl = include_prefixes.plist;
4771 if (gcc_exec_prefix)
4773 do_spec_1 ("-iprefix", 1, NULL);
4774 /* Make this a separate argument. */
4775 do_spec_1 (" ", 0, NULL);
4776 do_spec_1 (gcc_exec_prefix, 1, NULL);
4777 do_spec_1 (" ", 0, NULL);
4780 if (target_system_root_changed ||
4781 (target_system_root && target_sysroot_hdrs_suffix))
4783 do_spec_1 ("-isysroot", 1, NULL);
4784 /* Make this a separate argument. */
4785 do_spec_1 (" ", 0, NULL);
4786 do_spec_1 (target_system_root, 1, NULL);
4787 if (target_sysroot_hdrs_suffix)
4788 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
4789 do_spec_1 (" ", 0, NULL);
4792 for (; pl; pl = pl->next)
4794 do_spec_1 ("-isystem", 1, NULL);
4795 /* Make this a separate argument. */
4796 do_spec_1 (" ", 0, NULL);
4797 do_spec_1 (pl->prefix, 1, NULL);
4798 do_spec_1 (" ", 0, NULL);
4805 int max = n_infiles;
4806 max += lang_specific_extra_outfiles;
4808 for (i = 0; i < max; i++)
4810 store_arg (outfiles[i], 0, 0);
4815 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4820 this_is_library_file = 1;
4824 outfiles[input_file_number] = NULL;
4828 this_is_output_file = 1;
4833 int cur_index = argbuf_index;
4834 /* Handle the {...} following the %W. */
4837 p = handle_braces (p + 1);
4840 /* End any pending argument. */
4843 obstack_1grow (&obstack, 0);
4844 string = obstack_finish (&obstack);
4845 if (this_is_library_file)
4846 string = find_file (string);
4847 store_arg (string, delete_this_arg, this_is_output_file);
4848 if (this_is_output_file)
4849 outfiles[input_file_number] = string;
4852 /* If any args were output, mark the last one for deletion
4854 if (argbuf_index != cur_index)
4855 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
4859 /* %x{OPTION} records OPTION for %X to output. */
4865 /* Skip past the option value and make a copy. */
4870 string = save_string (p1 + 1, p - p1 - 2);
4872 /* See if we already recorded this option. */
4873 for (i = 0; i < n_linker_options; i++)
4874 if (! strcmp (string, linker_options[i]))
4880 /* This option is new; add it. */
4881 add_linker_option (string, strlen (string));
4885 /* Dump out the options accumulated previously using %x. */
4887 for (i = 0; i < n_linker_options; i++)
4889 do_spec_1 (linker_options[i], 1, NULL);
4890 /* Make each accumulated option a separate argument. */
4891 do_spec_1 (" ", 0, NULL);
4895 /* Dump out the options accumulated previously using -Wa,. */
4897 for (i = 0; i < n_assembler_options; i++)
4899 do_spec_1 (assembler_options[i], 1, NULL);
4900 /* Make each accumulated option a separate argument. */
4901 do_spec_1 (" ", 0, NULL);
4905 /* Dump out the options accumulated previously using -Wp,. */
4907 for (i = 0; i < n_preprocessor_options; i++)
4909 do_spec_1 (preprocessor_options[i], 1, NULL);
4910 /* Make each accumulated option a separate argument. */
4911 do_spec_1 (" ", 0, NULL);
4915 /* Here are digits and numbers that just process
4916 a certain constant string as a spec. */
4919 value = do_spec_1 (cc1_spec, 0, NULL);
4925 value = do_spec_1 (cc1plus_spec, 0, NULL);
4931 value = do_spec_1 (asm_spec, 0, NULL);
4937 value = do_spec_1 (asm_final_spec, 0, NULL);
4944 const char *const spec
4945 = (input_file_compiler->cpp_spec
4946 ? input_file_compiler->cpp_spec
4948 value = do_spec_1 (spec, 0, NULL);
4955 value = do_spec_1 (endfile_spec, 0, NULL);
4961 value = do_spec_1 (link_spec, 0, NULL);
4967 value = do_spec_1 (lib_spec, 0, NULL);
4973 value = do_spec_1 (libgcc_spec, 0, NULL);
4979 if (multilib_dir && strcmp (multilib_dir, ".") != 0)
4985 len = strlen (multilib_dir);
4986 obstack_blank (&obstack, len + 1);
4987 p = obstack_next_free (&obstack) - (len + 1);
4990 for (q = multilib_dir; *q ; ++q, ++p)
4991 *p = (IS_DIR_SEPARATOR (*q) ? '_' : *q);
4996 /* We assume there is a directory
4997 separator at the end of this string. */
4998 if (target_system_root)
5000 obstack_grow (&obstack, target_system_root,
5001 strlen (target_system_root));
5002 if (target_sysroot_suffix)
5003 obstack_grow (&obstack, target_sysroot_suffix,
5004 strlen (target_sysroot_suffix));
5009 value = do_spec_1 (startfile_spec, 0, NULL);
5014 /* Here we define characters other than letters and digits. */
5017 p = handle_braces (p);
5023 p = handle_spec_function (p);
5029 obstack_1grow (&obstack, '%');
5036 while (p[len] && p[len] != ' ' && p[len] != '%')
5038 suffix_subst = save_string (p - 1, len + 1);
5043 /* Henceforth ignore the option(s) matching the pattern
5048 int have_wildcard = 0;
5051 while (p[len] && p[len] != ' ' && p[len] != '\t')
5054 if (p[len-1] == '*')
5057 for (i = 0; i < n_switches; i++)
5058 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5059 && (have_wildcard || switches[i].part1[len] == '\0'))
5061 switches[i].live_cond = SWITCH_IGNORE;
5062 switches[i].validated = 1;
5070 if (soft_matched_part)
5072 do_spec_1 (soft_matched_part, 1, NULL);
5073 do_spec_1 (" ", 0, NULL);
5076 /* Catch the case where a spec string contains something like
5077 '%{foo:%*}'. ie there is no * in the pattern on the left
5078 hand side of the :. */
5079 error ("spec failure: '%%*' has not been initialized by pattern match");
5082 /* Process a string found as the value of a spec given by name.
5083 This feature allows individual machine descriptions
5084 to add and use their own specs.
5085 %[...] modifies -D options the way %P does;
5086 %(...) uses the spec unmodified. */
5088 error ("warning: use of obsolete %%[ operator in specs");
5091 const char *name = p;
5092 struct spec_list *sl;
5095 /* The string after the S/P is the name of a spec that is to be
5097 while (*p && *p != ')' && *p != ']')
5100 /* See if it's in the list. */
5101 for (len = p - name, sl = specs; sl; sl = sl->next)
5102 if (sl->name_len == len && !strncmp (sl->name, name, len))
5104 name = *(sl->ptr_spec);
5106 notice ("Processing spec %c%s%c, which is '%s'\n",
5107 c, sl->name, (c == '(') ? ')' : ']', name);
5116 value = do_spec_1 (name, 0, NULL);
5122 char *x = (char *) alloca (strlen (name) * 2 + 1);
5124 const char *y = name;
5127 /* Copy all of NAME into BUF, but put __ after
5128 every -D and at the end of each arg. */
5131 if (! strncmp (y, "-D", 2))
5142 && (*y == ' ' || *y == '\t' || *y == '='
5143 || *y == '}' || *y == 0))
5156 value = do_spec_1 (buf, 0, NULL);
5162 /* Discard the closing paren or bracket. */
5169 error ("spec failure: unrecognized spec option '%c'", c);
5175 /* Backslash: treat next character as ordinary. */
5180 /* Ordinary character: put it into the current argument. */
5181 obstack_1grow (&obstack, c);
5185 /* End of string. If we are processing a spec function, we need to
5186 end any pending argument. */
5187 if (processing_spec_function && arg_going)
5189 obstack_1grow (&obstack, 0);
5190 string = obstack_finish (&obstack);
5191 if (this_is_library_file)
5192 string = find_file (string);
5193 store_arg (string, delete_this_arg, this_is_output_file);
5194 if (this_is_output_file)
5195 outfiles[input_file_number] = string;
5202 /* Look up a spec function. */
5204 static const struct spec_function *
5205 lookup_spec_function (const char *name)
5207 static const struct spec_function * const spec_function_tables[] =
5209 static_spec_functions,
5210 lang_specific_spec_functions,
5212 const struct spec_function *sf;
5215 for (i = 0; i < ARRAY_SIZE (spec_function_tables); i++)
5217 for (sf = spec_function_tables[i]; sf->name != NULL; sf++)
5218 if (strcmp (sf->name, name) == 0)
5225 /* Evaluate a spec function. */
5228 eval_spec_function (const char *func, const char *args)
5230 const struct spec_function *sf;
5231 const char *funcval;
5233 /* Saved spec processing context. */
5234 int save_argbuf_index;
5235 int save_argbuf_length;
5236 const char **save_argbuf;
5239 int save_delete_this_arg;
5240 int save_this_is_output_file;
5241 int save_this_is_library_file;
5242 int save_input_from_pipe;
5243 const char *save_suffix_subst;
5246 sf = lookup_spec_function (func);
5248 fatal ("unknown spec function `%s'", func);
5250 /* Push the spec processing context. */
5251 save_argbuf_index = argbuf_index;
5252 save_argbuf_length = argbuf_length;
5253 save_argbuf = argbuf;
5255 save_arg_going = arg_going;
5256 save_delete_this_arg = delete_this_arg;
5257 save_this_is_output_file = this_is_output_file;
5258 save_this_is_library_file = this_is_library_file;
5259 save_input_from_pipe = input_from_pipe;
5260 save_suffix_subst = suffix_subst;
5262 /* Create a new spec processing context, and build the function
5266 if (do_spec_2 (args) < 0)
5267 fatal ("error in args to spec function `%s'", func);
5269 /* argbuf_index is an index for the next argument to be inserted, and
5270 so contains the count of the args already inserted. */
5272 funcval = (*sf->func) (argbuf_index, argbuf);
5274 /* Pop the spec processing context. */
5275 argbuf_index = save_argbuf_index;
5276 argbuf_length = save_argbuf_length;
5278 argbuf = save_argbuf;
5280 arg_going = save_arg_going;
5281 delete_this_arg = save_delete_this_arg;
5282 this_is_output_file = save_this_is_output_file;
5283 this_is_library_file = save_this_is_library_file;
5284 input_from_pipe = save_input_from_pipe;
5285 suffix_subst = save_suffix_subst;
5290 /* Handle a spec function call of the form:
5294 ARGS is processed as a spec in a separate context and split into an
5295 argument vector in the normal fashion. The function returns a string
5296 containing a spec which we then process in the caller's context, or
5297 NULL if no processing is required. */
5300 handle_spec_function (const char *p)
5303 const char *endp, *funcval;
5306 processing_spec_function++;
5308 /* Get the function name. */
5309 for (endp = p; *endp != '\0'; endp++)
5311 if (*endp == '(') /* ) */
5313 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5314 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5315 fatal ("malformed spec function name");
5317 if (*endp != '(') /* ) */
5318 fatal ("no arguments for spec function");
5319 func = save_string (p, endp - p);
5322 /* Get the arguments. */
5323 for (count = 0; *endp != '\0'; endp++)
5332 else if (*endp == '(') /* ) */
5337 fatal ("malformed spec function arguments");
5338 args = save_string (p, endp - p);
5341 /* p now points to just past the end of the spec function expression. */
5343 funcval = eval_spec_function (func, args);
5344 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5350 processing_spec_function--;
5355 /* Inline subroutine of handle_braces. Returns true if the current
5356 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5358 input_suffix_matches (const char *atom, const char *end_atom)
5360 return (input_suffix
5361 && !strncmp (input_suffix, atom, end_atom - atom)
5362 && input_suffix[end_atom - atom] == '\0');
5365 /* Inline subroutine of handle_braces. Returns true if a switch
5366 matching the atom bracketed by ATOM and END_ATOM appeared on the
5369 switch_matches (const char *atom, const char *end_atom, int starred)
5372 int len = end_atom - atom;
5373 int plen = starred ? len : -1;
5375 for (i = 0; i < n_switches; i++)
5376 if (!strncmp (switches[i].part1, atom, len)
5377 && (starred || switches[i].part1[len] == '\0')
5378 && check_live_switch (i, plen))
5384 /* Inline subroutine of handle_braces. Mark all of the switches which
5385 match ATOM (extends to END_ATOM; STARRED indicates whether there
5386 was a star after the atom) for later processing. */
5388 mark_matching_switches (const char *atom, const char *end_atom, int starred)
5391 int len = end_atom - atom;
5392 int plen = starred ? len : -1;
5394 for (i = 0; i < n_switches; i++)
5395 if (!strncmp (switches[i].part1, atom, len)
5396 && (starred || switches[i].part1[len] == '\0')
5397 && check_live_switch (i, plen))
5398 switches[i].ordering = 1;
5401 /* Inline subroutine of handle_braces. Process all the currently
5402 marked switches through give_switch, and clear the marks. */
5404 process_marked_switches (void)
5408 for (i = 0; i < n_switches; i++)
5409 if (switches[i].ordering == 1)
5411 switches[i].ordering = 0;
5416 /* Handle a %{ ... } construct. P points just inside the leading {.
5417 Returns a pointer one past the end of the brace block, or 0
5418 if we call do_spec_1 and that returns -1. */
5421 handle_braces (const char *p)
5423 const char *atom, *end_atom;
5424 const char *d_atom = NULL, *d_end_atom = NULL;
5431 bool a_must_be_last = false;
5432 bool ordered_set = false;
5433 bool disjunct_set = false;
5434 bool disj_matched = false;
5435 bool disj_starred = true;
5436 bool n_way_choice = false;
5437 bool n_way_matched = false;
5439 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5446 /* Scan one "atom" (S in the description above of %{}, possibly
5447 with !, ., or * modifiers). */
5448 a_matched = a_is_suffix = a_is_starred = a_is_negated = false;
5452 p++, a_is_negated = true;
5456 p++, a_is_suffix = true;
5459 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5460 || *p == ',' || *p == '.' || *p == '@')
5465 p++, a_is_starred = 1;
5468 if (*p == '&' || *p == '}')
5470 /* Substitute the switch(es) indicated by the current atom. */
5472 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5473 || atom == end_atom)
5476 mark_matching_switches (atom, end_atom, a_is_starred);
5479 process_marked_switches ();
5481 else if (*p == '|' || *p == ':')
5483 /* Substitute some text if the current atom appears as a switch
5485 disjunct_set = true;
5489 if (atom == end_atom)
5491 if (!n_way_choice || disj_matched || *p == '|'
5492 || a_is_negated || a_is_suffix || a_is_starred)
5495 /* An empty term may appear as the last choice of an
5496 N-way choice set; it means "otherwise". */
5497 a_must_be_last = true;
5498 disj_matched = !n_way_matched;
5499 disj_starred = false;
5503 if (a_is_suffix && a_is_starred)
5507 disj_starred = false;
5509 /* Don't bother testing this atom if we already have a
5511 if (!disj_matched && !n_way_matched)
5514 a_matched = input_suffix_matches (atom, end_atom);
5516 a_matched = switch_matches (atom, end_atom, a_is_starred);
5518 if (a_matched != a_is_negated)
5520 disj_matched = true;
5522 d_end_atom = end_atom;
5529 /* Found the body, that is, the text to substitute if the
5530 current disjunction matches. */
5531 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5532 disj_matched && !n_way_matched);
5536 /* If we have an N-way choice, reset state for the next
5540 n_way_choice = true;
5541 n_way_matched |= disj_matched;
5542 disj_matched = false;
5543 disj_starred = true;
5544 d_atom = d_end_atom = NULL;
5551 while (*p++ != '}');
5558 /* Subroutine of handle_braces. Scan and process a brace substitution body
5559 (X in the description of %{} syntax). P points one past the colon;
5560 ATOM and END_ATOM bracket the first atom which was found to be true
5561 (present) in the current disjunction; STARRED indicates whether all
5562 the atoms in the current disjunction were starred (for syntax validation);
5563 MATCHED indicates whether the disjunction matched or not, and therefore
5564 whether or not the body is to be processed through do_spec_1 or just
5565 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5569 process_brace_body (const char *p, const char *atom, const char *end_atom,
5570 int starred, int matched)
5572 const char *body, *end_body;
5573 unsigned int nesting_level;
5574 bool have_subst = false;
5576 /* Locate the closing } or ;, honoring nested braces.
5577 Trim trailing whitespace. */
5586 if (!--nesting_level)
5589 else if (*p == ';' && nesting_level == 1)
5591 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
5593 else if (*p == '\0')
5599 while (end_body[-1] == ' ' || end_body[-1] == '\t')
5602 if (have_subst && !starred)
5607 /* Copy the substitution body to permanent storage and execute it.
5608 If have_subst is false, this is a simple matter of running the
5609 body through do_spec_1... */
5610 char *string = save_string (body, end_body - body);
5613 if (do_spec_1 (string, 0, NULL) < 0)
5618 /* ... but if have_subst is true, we have to process the
5619 body once for each matching switch, with %* set to the
5620 variant part of the switch. */
5621 unsigned int hard_match_len = end_atom - atom;
5624 for (i = 0; i < n_switches; i++)
5625 if (!strncmp (switches[i].part1, atom, hard_match_len)
5626 && check_live_switch (i, hard_match_len))
5628 if (do_spec_1 (string, 0,
5629 &switches[i].part1[hard_match_len]) < 0)
5631 /* Pass any arguments this switch has. */
5633 suffix_subst = NULL;
5641 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5642 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5643 spec, or -1 if either exact match or %* is used.
5645 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5646 whose value does not begin with "no-" is obsoleted by the same value
5647 with the "no-", similarly for a switch with the "no-" prefix. */
5650 check_live_switch (int switchnum, int prefix_length)
5652 const char *name = switches[switchnum].part1;
5655 /* In the common case of {<at-most-one-letter>*}, a negating
5656 switch would always match, so ignore that case. We will just
5657 send the conflicting switches to the compiler phase. */
5658 if (prefix_length >= 0 && prefix_length <= 1)
5661 /* If we already processed this switch and determined if it was
5662 live or not, return our past determination. */
5663 if (switches[switchnum].live_cond != 0)
5664 return switches[switchnum].live_cond > 0;
5666 /* Now search for duplicate in a manner that depends on the name. */
5670 for (i = switchnum + 1; i < n_switches; i++)
5671 if (switches[i].part1[0] == 'O')
5673 switches[switchnum].validated = 1;
5674 switches[switchnum].live_cond = SWITCH_FALSE;
5679 case 'W': case 'f': case 'm':
5680 if (! strncmp (name + 1, "no-", 3))
5682 /* We have Xno-YYY, search for XYYY. */
5683 for (i = switchnum + 1; i < n_switches; i++)
5684 if (switches[i].part1[0] == name[0]
5685 && ! strcmp (&switches[i].part1[1], &name[4]))
5687 switches[switchnum].validated = 1;
5688 switches[switchnum].live_cond = SWITCH_FALSE;
5694 /* We have XYYY, search for Xno-YYY. */
5695 for (i = switchnum + 1; i < n_switches; i++)
5696 if (switches[i].part1[0] == name[0]
5697 && switches[i].part1[1] == 'n'
5698 && switches[i].part1[2] == 'o'
5699 && switches[i].part1[3] == '-'
5700 && !strcmp (&switches[i].part1[4], &name[1]))
5702 switches[switchnum].validated = 1;
5703 switches[switchnum].live_cond = SWITCH_FALSE;
5710 /* Otherwise the switch is live. */
5711 switches[switchnum].live_cond = SWITCH_LIVE;
5715 /* Pass a switch to the current accumulating command
5716 in the same form that we received it.
5717 SWITCHNUM identifies the switch; it is an index into
5718 the vector of switches gcc received, which is `switches'.
5719 This cannot fail since it never finishes a command line.
5721 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5724 give_switch (int switchnum, int omit_first_word)
5726 if (switches[switchnum].live_cond == SWITCH_IGNORE)
5729 if (!omit_first_word)
5731 do_spec_1 ("-", 0, NULL);
5732 do_spec_1 (switches[switchnum].part1, 1, NULL);
5735 if (switches[switchnum].args != 0)
5738 for (p = switches[switchnum].args; *p; p++)
5740 const char *arg = *p;
5742 do_spec_1 (" ", 0, NULL);
5745 unsigned length = strlen (arg);
5748 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5749 if (arg[length] == '.')
5751 ((char *)arg)[length] = 0;
5755 do_spec_1 (arg, 1, NULL);
5757 ((char *)arg)[length] = '.';
5758 do_spec_1 (suffix_subst, 1, NULL);
5761 do_spec_1 (arg, 1, NULL);
5765 do_spec_1 (" ", 0, NULL);
5766 switches[switchnum].validated = 1;
5769 /* Search for a file named NAME trying various prefixes including the
5770 user's -B prefix and some standard ones.
5771 Return the absolute file name found. If nothing is found, return NAME. */
5774 find_file (const char *name)
5778 /* Try multilib_dir if it is defined. */
5779 if (multilib_os_dir != NULL)
5781 newname = find_a_file (&startfile_prefixes, name, R_OK, 1);
5783 /* If we don't find it in the multi library dir, then fall
5784 through and look for it in the normal places. */
5785 if (newname != NULL)
5789 newname = find_a_file (&startfile_prefixes, name, R_OK, 0);
5790 return newname ? newname : name;
5793 /* Determine whether a directory exists. If LINKER, return 0 for
5794 certain fixed names not needed by the linker. If not LINKER, it is
5795 only important to return 0 if the host machine has a small ARG_MAX
5799 is_directory (const char *path1, const char *path2, int linker)
5801 int len1 = strlen (path1);
5802 int len2 = strlen (path2);
5803 char *path = (char *) alloca (3 + len1 + len2);
5807 #ifndef SMALL_ARG_MAX
5812 /* Construct the path from the two parts. Ensure the string ends with "/.".
5813 The resulting path will be a directory even if the given path is a
5815 memcpy (path, path1, len1);
5816 memcpy (path + len1, path2, len2);
5817 cp = path + len1 + len2;
5818 if (!IS_DIR_SEPARATOR (cp[-1]))
5819 *cp++ = DIR_SEPARATOR;
5823 /* Exclude directories that the linker is known to search. */
5826 && strcmp (path, concat (dir_separator_str, "lib",
5827 dir_separator_str, ".", NULL)) == 0)
5829 && strcmp (path, concat (dir_separator_str, "usr",
5830 dir_separator_str, "lib",
5831 dir_separator_str, ".", NULL)) == 0)))
5834 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5837 /* Set up the various global variables to indicate that we're processing
5838 the input file named FILENAME. */
5841 set_input (const char *filename)
5845 input_filename = filename;
5846 input_filename_length = strlen (input_filename);
5848 input_basename = input_filename;
5849 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
5850 /* Skip drive name so 'x:foo' is handled properly. */
5851 if (input_basename[1] == ':')
5852 input_basename += 2;
5854 for (p = input_basename; *p; p++)
5855 if (IS_DIR_SEPARATOR (*p))
5856 input_basename = p + 1;
5858 /* Find a suffix starting with the last period,
5859 and set basename_length to exclude that suffix. */
5860 basename_length = strlen (input_basename);
5861 suffixed_basename_length = basename_length;
5862 p = input_basename + basename_length;
5863 while (p != input_basename && *p != '.')
5865 if (*p == '.' && p != input_basename)
5867 basename_length = p - input_basename;
5868 input_suffix = p + 1;
5873 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5874 we will need to do a stat on the input_filename. The
5875 INPUT_STAT_SET signals that the stat is needed. */
5879 /* On fatal signals, delete all the temporary files. */
5882 fatal_error (int signum)
5884 signal (signum, SIG_DFL);
5885 delete_failure_queue ();
5886 delete_temp_files ();
5887 /* Get the same signal again, this time not handled,
5888 so its normal effect occurs. */
5889 kill (getpid (), signum);
5892 extern int main (int, const char *const *);
5895 main (int argc, const char *const *argv)
5899 int linker_was_run = 0;
5900 int num_linker_inputs = 0;
5901 char *explicit_link_files;
5904 struct user_specs *uptr;
5906 p = argv[0] + strlen (argv[0]);
5907 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
5911 xmalloc_set_program_name (programname);
5913 #ifdef GCC_DRIVER_HOST_INITIALIZATION
5914 /* Perform host dependent initialization when needed. */
5915 GCC_DRIVER_HOST_INITIALIZATION;
5918 gcc_init_libintl ();
5920 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
5921 signal (SIGINT, fatal_error);
5923 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
5924 signal (SIGHUP, fatal_error);
5926 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
5927 signal (SIGTERM, fatal_error);
5929 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
5930 signal (SIGPIPE, fatal_error);
5933 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
5934 receive the signal. A different setting is inheritable */
5935 signal (SIGCHLD, SIG_DFL);
5938 /* Allocate the argument vector. */
5941 obstack_init (&obstack);
5943 /* Build multilib_select, et. al from the separate lines that make up each
5944 multilib selection. */
5946 const char *const *q = multilib_raw;
5949 obstack_init (&multilib_obstack);
5950 while ((p = *q++) != (char *) 0)
5951 obstack_grow (&multilib_obstack, p, strlen (p));
5953 obstack_1grow (&multilib_obstack, 0);
5954 multilib_select = obstack_finish (&multilib_obstack);
5956 q = multilib_matches_raw;
5957 while ((p = *q++) != (char *) 0)
5958 obstack_grow (&multilib_obstack, p, strlen (p));
5960 obstack_1grow (&multilib_obstack, 0);
5961 multilib_matches = obstack_finish (&multilib_obstack);
5963 q = multilib_exclusions_raw;
5964 while ((p = *q++) != (char *) 0)
5965 obstack_grow (&multilib_obstack, p, strlen (p));
5967 obstack_1grow (&multilib_obstack, 0);
5968 multilib_exclusions = obstack_finish (&multilib_obstack);
5971 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
5974 obstack_1grow (&multilib_obstack, ' ');
5975 obstack_grow (&multilib_obstack,
5976 multilib_defaults_raw[i],
5977 strlen (multilib_defaults_raw[i]));
5981 obstack_1grow (&multilib_obstack, 0);
5982 multilib_defaults = obstack_finish (&multilib_obstack);
5985 /* Set up to remember the pathname of gcc and any options
5986 needed for collect. We use argv[0] instead of programname because
5987 we need the complete pathname. */
5988 obstack_init (&collect_obstack);
5989 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
5990 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
5991 putenv (obstack_finish (&collect_obstack));
5993 #ifdef INIT_ENVIRONMENT
5994 /* Set up any other necessary machine specific environment variables. */
5995 putenv (INIT_ENVIRONMENT);
5998 /* Make a table of what switches there are (switches, n_switches).
5999 Make a table of specified input files (infiles, n_infiles).
6000 Decode switches that are handled locally. */
6002 process_command (argc, argv);
6004 /* Initialize the vector of specs to just the default.
6005 This means one element containing 0s, as a terminator. */
6007 compilers = (struct compiler *) xmalloc (sizeof default_compilers);
6008 memcpy ((char *) compilers, (char *) default_compilers,
6009 sizeof default_compilers);
6010 n_compilers = n_default_compilers;
6012 /* Read specs from a file if there is one. */
6014 machine_suffix = concat (spec_machine, dir_separator_str,
6015 spec_version, dir_separator_str, NULL);
6016 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6018 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, 0);
6019 /* Read the specs file unless it is a default one. */
6020 if (specs_file != 0 && strcmp (specs_file, "specs"))
6021 read_specs (specs_file, TRUE);
6025 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6026 for any override of as, ld and libraries. */
6027 specs_file = (char *) alloca (strlen (standard_exec_prefix)
6028 + strlen (just_machine_suffix)
6029 + sizeof ("specs"));
6031 strcpy (specs_file, standard_exec_prefix);
6032 strcat (specs_file, just_machine_suffix);
6033 strcat (specs_file, "specs");
6034 if (access (specs_file, R_OK) == 0)
6035 read_specs (specs_file, TRUE);
6037 /* Process any configure-time defaults specified for the command line
6038 options, via OPTION_DEFAULT_SPECS. */
6039 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6040 do_option_spec (option_default_specs[i].name,
6041 option_default_specs[i].spec);
6043 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6044 of the command line. */
6046 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6047 do_self_spec (driver_self_specs[i]);
6049 /* If not cross-compiling, look for executables in the standard
6051 if (*cross_compile == '0')
6053 if (*md_exec_prefix)
6055 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6056 PREFIX_PRIORITY_LAST, 0, NULL, 0);
6060 /* Process sysroot_suffix_spec. */
6061 if (*sysroot_suffix_spec != 0
6062 && do_spec_2 (sysroot_suffix_spec) == 0)
6064 if (argbuf_index > 1)
6065 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC.");
6066 else if (argbuf_index == 1)
6067 target_sysroot_suffix = xstrdup (argbuf[argbuf_index -1]);
6070 /* Process sysroot_hdrs_suffix_spec. */
6071 if (*sysroot_hdrs_suffix_spec != 0
6072 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6074 if (argbuf_index > 1)
6075 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC.");
6076 else if (argbuf_index == 1)
6077 target_sysroot_hdrs_suffix = xstrdup (argbuf[argbuf_index -1]);
6080 /* Look for startfiles in the standard places. */
6081 if (*startfile_prefix_spec != 0
6082 && do_spec_2 (startfile_prefix_spec) == 0
6083 && do_spec_1 (" ", 0, NULL) == 0)
6086 for (ndx = 0; ndx < argbuf_index; ndx++)
6087 add_sysrooted_prefix (&startfile_prefixes, argbuf[ndx], "BINUTILS",
6088 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6090 /* We should eventually get rid of all these and stick to
6091 startfile_prefix_spec exclusively. */
6092 else if (*cross_compile == '0' || target_system_root)
6094 if (*md_exec_prefix)
6095 add_sysrooted_prefix (&startfile_prefixes, md_exec_prefix, "GCC",
6096 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6098 if (*md_startfile_prefix)
6099 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6100 "GCC", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6102 if (*md_startfile_prefix_1)
6103 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6104 "GCC", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6106 /* If standard_startfile_prefix is relative, base it on
6107 standard_exec_prefix. This lets us move the installed tree
6108 as a unit. If GCC_EXEC_PREFIX is defined, base
6109 standard_startfile_prefix on that as well. */
6110 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
6111 add_sysrooted_prefix (&startfile_prefixes,
6112 standard_startfile_prefix, "BINUTILS",
6113 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6116 if (gcc_exec_prefix)
6117 add_prefix (&startfile_prefixes,
6118 concat (gcc_exec_prefix, machine_suffix,
6119 standard_startfile_prefix, NULL),
6120 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
6121 add_prefix (&startfile_prefixes,
6122 concat (standard_exec_prefix,
6124 standard_startfile_prefix, NULL),
6125 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
6128 add_sysrooted_prefix (&startfile_prefixes, standard_startfile_prefix_1,
6129 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6130 add_sysrooted_prefix (&startfile_prefixes, standard_startfile_prefix_2,
6131 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6132 #if 0 /* Can cause surprises, and one can use -B./ instead. */
6133 add_prefix (&startfile_prefixes, "./", NULL,
6134 PREFIX_PRIORITY_LAST, 1, NULL, 0);
6138 /* Process any user specified specs in the order given on the command
6140 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6142 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6144 read_specs (filename ? filename : uptr->filename, FALSE);
6147 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6148 if (gcc_exec_prefix)
6149 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6150 spec_version, dir_separator_str, NULL);
6152 /* Now we have the specs.
6153 Set the `valid' bits for switches that match anything in any spec. */
6155 validate_all_switches ();
6157 /* Now that we have the switches and the specs, set
6158 the subdirectory based on the options. */
6159 set_multilib_dir ();
6161 /* Warn about any switches that no pass was interested in. */
6163 for (i = 0; (int) i < n_switches; i++)
6164 if (! switches[i].validated)
6165 error ("unrecognized option `-%s'", switches[i].part1);
6167 /* Obey some of the options. */
6169 if (print_search_dirs)
6171 printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix);
6172 printf (_("programs: %s\n"), build_search_list (&exec_prefixes, "", 0));
6173 printf (_("libraries: %s\n"), build_search_list (&startfile_prefixes, "", 0));
6177 if (print_file_name)
6179 printf ("%s\n", find_file (print_file_name));
6183 if (print_prog_name)
6185 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6186 printf ("%s\n", (newname ? newname : print_prog_name));
6190 if (print_multi_lib)
6192 print_multilib_info ();
6196 if (print_multi_directory)
6198 if (multilib_dir == NULL)
6201 printf ("%s\n", multilib_dir);
6205 if (print_multi_os_directory)
6207 if (multilib_os_dir == NULL)
6210 printf ("%s\n", multilib_os_dir);
6214 if (target_help_flag)
6216 /* Print if any target specific options. */
6218 /* We do not exit here. Instead we have created a fake input file
6219 called 'target-dummy' which needs to be compiled, and we pass this
6220 on to the various sub-processes, along with the --target-help
6224 if (print_help_list)
6230 printf (_("\nFor bug reporting instructions, please see:\n"));
6231 printf ("%s.\n", bug_report_url);
6236 /* We do not exit here. Instead we have created a fake input file
6237 called 'help-dummy' which needs to be compiled, and we pass this
6238 on the various sub-processes, along with the --help switch. */
6246 notice ("Configured with: %s\n", configuration_arguments);
6248 #ifdef THREAD_MODEL_SPEC
6249 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6250 but there's no point in doing all this processing just to get
6251 thread_model back. */
6252 obstack_init (&obstack);
6253 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6254 obstack_1grow (&obstack, '\0');
6255 thrmod = obstack_finish (&obstack);
6257 thrmod = thread_model;
6260 notice ("Thread model: %s\n", thrmod);
6262 /* compiler_version is truncated at the first space when initialized
6263 from version string, so truncate version_string at the first space
6264 before comparing. */
6265 for (n = 0; version_string[n]; n++)
6266 if (version_string[n] == ' ')
6269 if (! strncmp (version_string, compiler_version, n)
6270 && compiler_version[n] == 0)
6271 notice ("gcc version %s\n", version_string);
6273 notice ("gcc driver version %s executing gcc version %s\n",
6274 version_string, compiler_version);
6280 if (n_infiles == added_libraries)
6281 fatal ("no input files");
6283 /* Make a place to record the compiler output file names
6284 that correspond to the input files. */
6287 i += lang_specific_extra_outfiles;
6288 outfiles = (const char **) xcalloc (i, sizeof (char *));
6290 /* Record which files were specified explicitly as link input. */
6292 explicit_link_files = xcalloc (1, n_infiles);
6294 for (i = 0; (int) i < n_infiles; i++)
6296 int this_file_error = 0;
6298 /* Tell do_spec what to substitute for %i. */
6300 input_file_number = i;
6301 set_input (infiles[i].name);
6303 /* Use the same thing in %o, unless cp->spec says otherwise. */
6305 outfiles[i] = input_filename;
6307 /* Figure out which compiler from the file's suffix. */
6310 = lookup_compiler (infiles[i].name, input_filename_length,
6311 infiles[i].language);
6313 if (input_file_compiler)
6315 /* Ok, we found an applicable compiler. Run its spec. */
6317 if (input_file_compiler->spec[0] == '#')
6319 error ("%s: %s compiler not installed on this system",
6320 input_filename, &input_file_compiler->spec[1]);
6321 this_file_error = 1;
6325 value = do_spec (input_file_compiler->spec);
6327 this_file_error = 1;
6331 /* If this file's name does not contain a recognized suffix,
6332 record it as explicit linker input. */
6335 explicit_link_files[i] = 1;
6337 /* Clear the delete-on-failure queue, deleting the files in it
6338 if this compilation failed. */
6340 if (this_file_error)
6342 delete_failure_queue ();
6345 /* If this compilation succeeded, don't delete those files later. */
6346 clear_failure_queue ();
6349 /* Reset the output file name to the first input file name, for use
6350 with %b in LINK_SPEC on a target that prefers not to emit a.out
6353 set_input (infiles[0].name);
6355 if (error_count == 0)
6357 /* Make sure INPUT_FILE_NUMBER points to first available open
6359 input_file_number = n_infiles;
6360 if (lang_specific_pre_link ())
6364 /* Determine if there are any linker input files. */
6365 num_linker_inputs = 0;
6366 for (i = 0; (int) i < n_infiles; i++)
6367 if (explicit_link_files[i] || outfiles[i] != NULL)
6368 num_linker_inputs++;
6370 /* Run ld to link all the compiler output files. */
6372 if (num_linker_inputs > 0 && error_count == 0)
6374 int tmp = execution_count;
6376 /* We'll use ld if we can't find collect2. */
6377 if (! strcmp (linker_name_spec, "collect2"))
6379 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, 0);
6381 linker_name_spec = "ld";
6383 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6385 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH");
6386 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV);
6388 value = do_spec (link_command_spec);
6391 linker_was_run = (tmp != execution_count);
6394 /* If options said don't run linker,
6395 complain about input files to be given to the linker. */
6397 if (! linker_was_run && error_count == 0)
6398 for (i = 0; (int) i < n_infiles; i++)
6399 if (explicit_link_files[i])
6400 error ("%s: linker input file unused because linking not done",
6403 /* Delete some or all of the temporary files we made. */
6406 delete_failure_queue ();
6407 delete_temp_files ();
6409 if (print_help_list)
6411 printf (("\nFor bug reporting instructions, please see:\n"));
6412 printf ("%s\n", bug_report_url);
6415 return (signal_count != 0 ? 2
6416 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
6420 /* Find the proper compilation spec for the file name NAME,
6421 whose length is LENGTH. LANGUAGE is the specified language,
6422 or 0 if this file is to be passed to the linker. */
6424 static struct compiler *
6425 lookup_compiler (const char *name, size_t length, const char *language)
6427 struct compiler *cp;
6429 /* If this was specified by the user to be a linker input, indicate that. */
6430 if (language != 0 && language[0] == '*')
6433 /* Otherwise, look for the language, if one is spec'd. */
6436 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6437 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6440 error ("language %s not recognized", language);
6444 /* Look for a suffix. */
6445 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6447 if (/* The suffix `-' matches only the file name `-'. */
6448 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6449 || (strlen (cp->suffix) < length
6450 /* See if the suffix matches the end of NAME. */
6451 && !strcmp (cp->suffix,
6452 name + length - strlen (cp->suffix))
6457 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6458 /* look again, but case-insensitively this time. */
6460 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6462 if (/* The suffix `-' matches only the file name `-'. */
6463 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6464 || (strlen (cp->suffix) < length
6465 /* See if the suffix matches the end of NAME. */
6466 && ((!strcmp (cp->suffix,
6467 name + length - strlen (cp->suffix))
6468 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6469 && !strcasecmp (cp->suffix,
6470 name + length - strlen (cp->suffix)))
6476 if (cp >= compilers)
6478 if (cp->spec[0] != '@')
6479 /* A non-alias entry: return it. */
6482 /* An alias entry maps a suffix to a language.
6483 Search for the language; pass 0 for NAME and LENGTH
6484 to avoid infinite recursion if language not found. */
6485 return lookup_compiler (NULL, 0, cp->spec + 1);
6491 save_string (const char *s, int len)
6493 char *result = xmalloc (len + 1);
6495 memcpy (result, s, len);
6501 pfatal_with_name (const char *name)
6503 perror_with_name (name);
6504 delete_temp_files ();
6509 perror_with_name (const char *name)
6511 error ("%s: %s", name, xstrerror (errno));
6515 pfatal_pexecute (const char *errmsg_fmt, const char *errmsg_arg)
6519 int save_errno = errno;
6521 /* Space for trailing '\0' is in %s. */
6522 char *msg = xmalloc (strlen (errmsg_fmt) + strlen (errmsg_arg));
6523 sprintf (msg, errmsg_fmt, errmsg_arg);
6529 pfatal_with_name (errmsg_fmt);
6532 /* Output an error message and exit. */
6537 fatal ("internal gcc abort");
6540 /* Output an error message and exit. */
6543 fatal (const char *msgid, ...)
6547 va_start (ap, msgid);
6549 fprintf (stderr, "%s: ", programname);
6550 vfprintf (stderr, _(msgid), ap);
6552 fprintf (stderr, "\n");
6553 delete_temp_files ();
6558 error (const char *msgid, ...)
6562 va_start (ap, msgid);
6563 fprintf (stderr, "%s: ", programname);
6564 vfprintf (stderr, _(msgid), ap);
6567 fprintf (stderr, "\n");
6571 notice (const char *msgid, ...)
6575 va_start (ap, msgid);
6576 vfprintf (stderr, _(msgid), ap);
6581 validate_switches_from_spec (const char *spec)
6583 const char *p = spec;
6586 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
6587 /* We have a switch spec. */
6588 p = validate_switches (p + 1);
6592 validate_all_switches (void)
6594 struct compiler *comp;
6595 struct spec_list *spec;
6597 for (comp = compilers; comp->spec; comp++)
6598 validate_switches_from_spec (comp->spec);
6600 /* Look through the linked list of specs read from the specs file. */
6601 for (spec = specs; spec; spec = spec->next)
6602 validate_switches_from_spec (*spec->ptr_spec);
6604 validate_switches_from_spec (link_command_spec);
6607 /* Look at the switch-name that comes after START
6608 and mark as valid all supplied switches that match it. */
6611 validate_switches (const char *start)
6613 const char *p = start;
6617 bool suffix = false;
6618 bool starred = false;
6620 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
6633 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
6634 || *p == ',' || *p == '.' || *p == '@')
6639 starred = true, p++;
6645 /* Mark all matching switches as valid. */
6646 for (i = 0; i < n_switches; i++)
6647 if (!strncmp (switches[i].part1, atom, len)
6648 && (starred || switches[i].part1[len] == 0))
6649 switches[i].validated = 1;
6653 if (*p && (p[-1] == '|' || p[-1] == '&'))
6656 if (*p && p[-1] == ':')
6658 while (*p && *p != ';' && *p != '}')
6663 if (*p == '{' || *p == '<')
6664 p = validate_switches (p+1);
6665 else if (p[0] == 'W' && p[1] == '{')
6666 p = validate_switches (p+2);
6673 if (*p && p[-1] == ';')
6687 static struct mdswitchstr *mdswitches;
6688 static int n_mdswitches;
6690 /* Check whether a particular argument was used. The first time we
6691 canonicalize the switches to keep only the ones we care about. */
6694 used_arg (const char *p, int len)
6699 const char *replace;
6704 static struct mswitchstr *mswitches;
6705 static int n_mswitches;
6710 struct mswitchstr *matches;
6714 /* Break multilib_matches into the component strings of string
6715 and replacement string. */
6716 for (q = multilib_matches; *q != '\0'; q++)
6721 (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
6723 q = multilib_matches;
6733 matches[i].len = q - matches[i].str;
6735 matches[i].replace = ++q;
6736 while (*q != ';' && *q != '\0')
6742 matches[i].rep_len = q - matches[i].replace;
6748 /* Now build a list of the replacement string for switches that we care
6749 about. Make sure we allocate at least one entry. This prevents
6750 xmalloc from calling fatal, and prevents us from re-executing this
6753 = (struct mswitchstr *)
6754 xmalloc (sizeof (struct mswitchstr)
6755 * (n_mdswitches + (n_switches ? n_switches : 1)));
6756 for (i = 0; i < n_switches; i++)
6758 int xlen = strlen (switches[i].part1);
6759 for (j = 0; j < cnt; j++)
6760 if (xlen == matches[j].len
6761 && ! strncmp (switches[i].part1, matches[j].str, xlen))
6763 mswitches[n_mswitches].str = matches[j].replace;
6764 mswitches[n_mswitches].len = matches[j].rep_len;
6765 mswitches[n_mswitches].replace = (char *) 0;
6766 mswitches[n_mswitches].rep_len = 0;
6772 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
6773 on the command line nor any options mutually incompatible with
6775 for (i = 0; i < n_mdswitches; i++)
6779 for (q = multilib_options; *q != '\0'; q++)
6785 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
6786 || strchr (" /", q[mdswitches[i].len]) == NULL)
6788 while (*q != ' ' && *q != '/' && *q != '\0')
6795 if (*q != ' ' && *q != '\0')
6797 while (*r != ' ' && *r != '\0')
6800 while (*q != ' ' && *q != '/' && *q != '\0')
6803 if (used_arg (r, q - r))
6808 mswitches[n_mswitches].str = mdswitches[i].str;
6809 mswitches[n_mswitches].len = mdswitches[i].len;
6810 mswitches[n_mswitches].replace = (char *) 0;
6811 mswitches[n_mswitches].rep_len = 0;
6824 for (i = 0; i < n_mswitches; i++)
6825 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
6832 default_arg (const char *p, int len)
6836 for (i = 0; i < n_mdswitches; i++)
6837 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
6843 /* Work out the subdirectory to use based on the options. The format of
6844 multilib_select is a list of elements. Each element is a subdirectory
6845 name followed by a list of options followed by a semicolon. The format
6846 of multilib_exclusions is the same, but without the preceding
6847 directory. First gcc will check the exclusions, if none of the options
6848 beginning with an exclamation point are present, and all of the other
6849 options are present, then we will ignore this completely. Passing
6850 that, gcc will consider each multilib_select in turn using the same
6851 rules for matching the options. If a match is found, that subdirectory
6855 set_multilib_dir (void)
6858 unsigned int this_path_len;
6859 const char *this_path, *this_arg;
6860 const char *start, *end;
6862 int ok, ndfltok, first;
6865 start = multilib_defaults;
6866 while (*start == ' ' || *start == '\t')
6868 while (*start != '\0')
6871 while (*start != ' ' && *start != '\t' && *start != '\0')
6873 while (*start == ' ' || *start == '\t')
6882 = (struct mdswitchstr *) xmalloc (sizeof (struct mdswitchstr)
6884 for (start = multilib_defaults; *start != '\0'; start = end + 1)
6886 while (*start == ' ' || *start == '\t')
6892 for (end = start + 1;
6893 *end != ' ' && *end != '\t' && *end != '\0'; end++)
6896 obstack_grow (&multilib_obstack, start, end - start);
6897 obstack_1grow (&multilib_obstack, 0);
6898 mdswitches[i].str = obstack_finish (&multilib_obstack);
6899 mdswitches[i++].len = end - start;
6906 p = multilib_exclusions;
6909 /* Ignore newlines. */
6916 /* Check the arguments. */
6930 while (*p != ' ' && *p != ';')
6937 if (*this_arg != '!')
6945 ok = used_arg (this_arg, p - this_arg);
6960 p = multilib_select;
6963 /* Ignore newlines. */
6970 /* Get the initial path. */
6978 this_path_len = p - this_path;
6980 /* Check the arguments. */
6996 while (*p != ' ' && *p != ';')
7003 if (*this_arg != '!')
7011 /* If this is a default argument, we can just ignore it.
7012 This is true even if this_arg begins with '!'. Beginning
7013 with '!' does not mean that this argument is necessarily
7014 inappropriate for this library: it merely means that
7015 there is a more specific library which uses this
7016 argument. If this argument is a default, we need not
7017 consider that more specific library. */
7018 ok = used_arg (this_arg, p - this_arg);
7025 if (default_arg (this_arg, p - this_arg))
7034 if (this_path_len != 1
7035 || this_path[0] != '.')
7037 char *new_multilib_dir = xmalloc (this_path_len + 1);
7040 strncpy (new_multilib_dir, this_path, this_path_len);
7041 new_multilib_dir[this_path_len] = '\0';
7042 q = strchr (new_multilib_dir, ':');
7045 multilib_dir = new_multilib_dir;
7052 const char *q = this_path, *end = this_path + this_path_len;
7054 while (q < end && *q != ':')
7058 char *new_multilib_os_dir = xmalloc (end - q);
7059 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
7060 new_multilib_os_dir[end - q - 1] = '\0';
7061 multilib_os_dir = new_multilib_os_dir;
7069 if (multilib_dir == NULL && multilib_os_dir != NULL
7070 && strcmp (multilib_os_dir, ".") == 0)
7072 free ((char *) multilib_os_dir);
7073 multilib_os_dir = NULL;
7075 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7076 multilib_os_dir = multilib_dir;
7079 /* Print out the multiple library subdirectory selection
7080 information. This prints out a series of lines. Each line looks
7081 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7082 required. Only the desired options are printed out, the negative
7083 matches. The options are print without a leading dash. There are
7084 no spaces to make it easy to use the information in the shell.
7085 Each subdirectory is printed only once. This assumes the ordering
7086 generated by the genmultilib script. Also, we leave out ones that match
7090 print_multilib_info (void)
7092 const char *p = multilib_select;
7093 const char *last_path = 0, *this_path;
7095 unsigned int last_path_len = 0;
7100 /* Ignore newlines. */
7107 /* Get the initial path. */
7116 /* When --disable-multilib was used but target defines
7117 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7118 to find multilib_os_dir, so skip them from output. */
7119 if (this_path[0] == '.' && this_path[1] == ':')
7122 /* Check for matches with the multilib_exclusions. We don't bother
7123 with the '!' in either list. If any of the exclusion rules match
7124 all of its options with the select rule, we skip it. */
7126 const char *e = multilib_exclusions;
7127 const char *this_arg;
7132 /* Ignore newlines. */
7139 /* Check the arguments. */
7156 while (*e != ' ' && *e != ';')
7167 int len = e - this_arg;
7174 while (*q != ' ' && *q != ';')
7181 if (! strncmp (arg, this_arg, (len < q - arg) ? q - arg : len) ||
7182 default_arg (this_arg, e - this_arg))
7212 /* If this is a duplicate, skip it. */
7213 skip = (last_path != 0 && (unsigned int) (p - this_path) == last_path_len
7214 && ! strncmp (last_path, this_path, last_path_len));
7216 last_path = this_path;
7217 last_path_len = p - this_path;
7220 /* If this directory requires any default arguments, we can skip
7221 it. We will already have printed a directory identical to
7222 this one which does not require that default argument. */
7240 while (*q != ' ' && *q != ';')
7248 && default_arg (arg, q - arg))
7263 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7282 use_arg = *p != '!';
7287 while (*p != ' ' && *p != ';')
7302 /* If there are extra options, print them now. */
7303 if (multilib_extra && *multilib_extra)
7305 int print_at = TRUE;
7308 for (q = multilib_extra; *q != '\0'; q++)
7329 /* if-exists built-in spec function.
7331 Checks to see if the file specified by the absolute pathname in
7332 ARGS exists. Returns that pathname if found.
7334 The usual use for this function is to check for a library file
7335 (whose name has been expanded with %s). */
7338 if_exists_spec_function (int argc, const char **argv)
7340 /* Must have only one argument. */
7341 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7347 /* if-exists-else built-in spec function.
7349 This is like if-exists, but takes an additional argument which
7350 is returned if the first argument does not exist. */
7353 if_exists_else_spec_function (int argc, const char **argv)
7355 /* Must have exactly two arguments. */
7359 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))