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 *);
1110 const char **newv = xmalloc (newvsize);
1114 newv[newindex++] = argv[i++];
1118 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1122 target_option_translations[tott_idx].option_found;
1125 if (strcmp (target_option_translations[tott_idx].option_found,
1132 for (sp = target_option_translations[tott_idx].replacements;
1139 newvsize += spaces * sizeof (const char *);
1140 newv = xrealloc (newv, newvsize);
1142 sp = target_option_translations[tott_idx].replacements;
1151 newv[newindex++] = np;
1152 while (*np != ' ' && *np)
1163 if (target_option_translations[tott_idx].option_found)
1167 /* Translate -- options. */
1168 if (argv[i][0] == '-' && argv[i][1] == '-')
1171 /* Find a mapping that applies to this option. */
1172 for (j = 0; j < ARRAY_SIZE (option_map); j++)
1174 size_t optlen = strlen (option_map[j].name);
1175 size_t arglen = strlen (argv[i]);
1176 size_t complen = arglen > optlen ? optlen : arglen;
1177 const char *arginfo = option_map[j].arg_info;
1182 if (!strncmp (argv[i], option_map[j].name, complen))
1184 const char *arg = 0;
1186 if (arglen < optlen)
1189 for (k = j + 1; k < ARRAY_SIZE (option_map); k++)
1190 if (strlen (option_map[k].name) >= arglen
1191 && !strncmp (argv[i], option_map[k].name, arglen))
1193 error ("ambiguous abbreviation %s", argv[i]);
1197 if (k != ARRAY_SIZE (option_map))
1201 if (arglen > optlen)
1203 /* If the option has an argument, accept that. */
1204 if (argv[i][optlen] == '=')
1205 arg = argv[i] + optlen + 1;
1207 /* If this mapping requires extra text at end of name,
1208 accept that as "argument". */
1209 else if (strchr (arginfo, '*') != 0)
1210 arg = argv[i] + optlen;
1212 /* Otherwise, extra text at end means mismatch.
1213 Try other mappings. */
1218 else if (strchr (arginfo, '*') != 0)
1220 error ("incomplete `%s' option", option_map[j].name);
1224 /* Handle arguments. */
1225 if (strchr (arginfo, 'a') != 0)
1231 error ("missing argument to `%s' option",
1232 option_map[j].name);
1239 else if (strchr (arginfo, '*') != 0)
1241 else if (strchr (arginfo, 'o') == 0)
1244 error ("extraneous argument to `%s' option",
1245 option_map[j].name);
1249 /* Store the translation as one argv elt or as two. */
1250 if (arg != 0 && strchr (arginfo, 'j') != 0)
1251 newv[newindex++] = concat (option_map[j].equivalent, arg,
1255 newv[newindex++] = option_map[j].equivalent;
1256 newv[newindex++] = arg;
1259 newv[newindex++] = option_map[j].equivalent;
1267 /* Handle old-fashioned options--just copy them through,
1268 with their arguments. */
1269 else if (argv[i][0] == '-')
1271 const char *p = argv[i] + 1;
1275 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
1276 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
1277 else if (WORD_SWITCH_TAKES_ARG (p))
1278 nskip += WORD_SWITCH_TAKES_ARG (p);
1279 else if ((c == 'B' || c == 'b' || c == 'x')
1282 else if (! strcmp (p, "Xlinker"))
1284 else if (! strcmp (p, "Xpreprocessor"))
1286 else if (! strcmp (p, "Xassembler"))
1289 /* Watch out for an option at the end of the command line that
1290 is missing arguments, and avoid skipping past the end of the
1292 if (nskip + i > argc)
1297 newv[newindex++] = argv[i++];
1302 /* Ordinary operands, or +e options. */
1303 newv[newindex++] = argv[i++];
1313 skip_whitespace (char *p)
1317 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1318 be considered whitespace. */
1319 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1321 else if (*p == '\n' || *p == ' ' || *p == '\t')
1335 /* Structures to keep track of prefixes to try when looking for files. */
1339 const char *prefix; /* String to prepend to the path. */
1340 struct prefix_list *next; /* Next in linked list. */
1341 int require_machine_suffix; /* Don't use without machine_suffix. */
1342 /* 2 means try both machine_suffix and just_machine_suffix. */
1343 int *used_flag_ptr; /* 1 if a file was found with this prefix. */
1344 int priority; /* Sort key - priority within list. */
1345 int os_multilib; /* 1 if OS multilib scheme should be used,
1346 0 for GCC multilib scheme. */
1351 struct prefix_list *plist; /* List of prefixes to try */
1352 int max_len; /* Max length of a prefix in PLIST */
1353 const char *name; /* Name of this list (used in config stuff) */
1356 /* List of prefixes to try when looking for executables. */
1358 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1360 /* List of prefixes to try when looking for startup (crt0) files. */
1362 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1364 /* List of prefixes to try when looking for include files. */
1366 static struct path_prefix include_prefixes = { 0, 0, "include" };
1368 /* Suffix to attach to directories searched for commands.
1369 This looks like `MACHINE/VERSION/'. */
1371 static const char *machine_suffix = 0;
1373 /* Suffix to attach to directories searched for commands.
1374 This is just `MACHINE/'. */
1376 static const char *just_machine_suffix = 0;
1378 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1380 static const char *gcc_exec_prefix;
1382 /* Default prefixes to attach to command names. */
1384 #ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */
1385 #undef MD_EXEC_PREFIX
1386 #undef MD_STARTFILE_PREFIX
1387 #undef MD_STARTFILE_PREFIX_1
1390 /* If no prefixes defined, use the null string, which will disable them. */
1391 #ifndef MD_EXEC_PREFIX
1392 #define MD_EXEC_PREFIX ""
1394 #ifndef MD_STARTFILE_PREFIX
1395 #define MD_STARTFILE_PREFIX ""
1397 #ifndef MD_STARTFILE_PREFIX_1
1398 #define MD_STARTFILE_PREFIX_1 ""
1401 /* Supply defaults for the standard prefixes. */
1403 #ifndef STANDARD_EXEC_PREFIX
1404 #define STANDARD_EXEC_PREFIX "/usr/local/lib/gcc-lib/"
1406 #ifndef STANDARD_STARTFILE_PREFIX
1407 #define STANDARD_STARTFILE_PREFIX "/usr/local/lib/"
1409 #ifndef TOOLDIR_BASE_PREFIX
1410 #define TOOLDIR_BASE_PREFIX "/usr/local/"
1412 #ifndef STANDARD_BINDIR_PREFIX
1413 #define STANDARD_BINDIR_PREFIX "/usr/local/bin"
1416 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1417 static const char *const standard_exec_prefix_1 = "/usr/lib/gcc/";
1418 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1420 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1421 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1422 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1423 static const char *const standard_startfile_prefix_1 = "/lib/";
1424 static const char *const standard_startfile_prefix_2 = "/usr/lib/";
1426 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1427 static const char *tooldir_prefix;
1429 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1431 /* Subdirectory to use for locating libraries. Set by
1432 set_multilib_dir based on the compilation options. */
1434 static const char *multilib_dir;
1436 /* Subdirectory to use for locating libraries in OS conventions. Set by
1437 set_multilib_dir based on the compilation options. */
1439 static const char *multilib_os_dir;
1441 /* Structure to keep track of the specs that have been defined so far.
1442 These are accessed using %(specname) or %[specname] in a compiler
1447 /* The following 2 fields must be first */
1448 /* to allow EXTRA_SPECS to be initialized */
1449 const char *name; /* name of the spec. */
1450 const char *ptr; /* available ptr if no static pointer */
1452 /* The following fields are not initialized */
1453 /* by EXTRA_SPECS */
1454 const char **ptr_spec; /* pointer to the spec itself. */
1455 struct spec_list *next; /* Next spec in linked list. */
1456 int name_len; /* length of the name */
1457 int alloc_p; /* whether string was allocated */
1460 #define INIT_STATIC_SPEC(NAME,PTR) \
1461 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1463 /* List of statically defined specs. */
1464 static struct spec_list static_specs[] =
1466 INIT_STATIC_SPEC ("asm", &asm_spec),
1467 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1468 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1469 INIT_STATIC_SPEC ("asm_options", &asm_options),
1470 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1471 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1472 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1473 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1474 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1475 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1476 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1477 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1478 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1479 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1480 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1481 INIT_STATIC_SPEC ("link", &link_spec),
1482 INIT_STATIC_SPEC ("lib", &lib_spec),
1483 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1484 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1485 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces),
1486 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1487 INIT_STATIC_SPEC ("version", &compiler_version),
1488 INIT_STATIC_SPEC ("multilib", &multilib_select),
1489 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1490 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1491 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1492 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1493 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1494 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1495 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1496 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1497 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1498 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1499 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1500 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1501 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1504 #ifdef EXTRA_SPECS /* additional specs needed */
1505 /* Structure to keep track of just the first two args of a spec_list.
1506 That is all that the EXTRA_SPECS macro gives us. */
1509 const char *const name;
1510 const char *const ptr;
1513 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1514 static struct spec_list *extra_specs = (struct spec_list *) 0;
1517 /* List of dynamically allocates specs that have been defined so far. */
1519 static struct spec_list *specs = (struct spec_list *) 0;
1521 /* List of static spec functions. */
1523 static const struct spec_function static_spec_functions[] =
1525 { "if-exists", if_exists_spec_function },
1526 { "if-exists-else", if_exists_else_spec_function },
1530 static int processing_spec_function;
1532 /* Add appropriate libgcc specs to OBSTACK, taking into account
1533 various permutations of -shared-libgcc, -shared, and such. */
1535 #ifdef ENABLE_SHARED_LIBGCC
1537 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1538 const char *static_name, const char *eh_name)
1542 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name,
1543 "}%{!static:%{!static-libgcc:",
1544 "%{!shared:%{!shared-libgcc:", static_name, " ",
1545 eh_name, "}%{shared-libgcc:", shared_name, " ",
1546 static_name, "}}%{shared:",
1548 "%{shared-libgcc:", shared_name,
1549 "}%{!shared-libgcc:", static_name, "}",
1555 obstack_grow (obstack, buf, strlen (buf));
1558 #endif /* ENABLE_SHARED_LIBGCC */
1560 /* Initialize the specs lookup routines. */
1565 struct spec_list *next = (struct spec_list *) 0;
1566 struct spec_list *sl = (struct spec_list *) 0;
1570 return; /* Already initialized. */
1573 notice ("Using built-in specs.\n");
1576 extra_specs = xcalloc (sizeof (struct spec_list),
1577 ARRAY_SIZE (extra_specs_1));
1579 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1581 sl = &extra_specs[i];
1582 sl->name = extra_specs_1[i].name;
1583 sl->ptr = extra_specs_1[i].ptr;
1585 sl->name_len = strlen (sl->name);
1586 sl->ptr_spec = &sl->ptr;
1591 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
1592 on ?: in file-scope variable initializations. */
1593 asm_debug = ASM_DEBUG_SPEC;
1595 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1597 sl = &static_specs[i];
1602 #ifdef ENABLE_SHARED_LIBGCC
1603 /* ??? If neither -shared-libgcc nor --static-libgcc was
1604 seen, then we should be making an educated guess. Some proposed
1605 heuristics for ELF include:
1607 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1608 program will be doing dynamic loading, which will likely
1609 need the shared libgcc.
1611 (2) If "-ldl", then it's also a fair bet that we're doing
1614 (3) For each ET_DYN we're linking against (either through -lfoo
1615 or /some/path/foo.so), check to see whether it or one of
1616 its dependencies depends on a shared libgcc.
1620 If the runtime is fixed to look for program headers instead
1621 of calling __register_frame_info at all, for each object,
1622 use the shared libgcc if any EH symbol referenced.
1624 If crtstuff is fixed to not invoke __register_frame_info
1625 automatically, for each object, use the shared libgcc if
1626 any non-empty unwind section found.
1628 Doing any of this probably requires invoking an external program to
1629 do the actual object file scanning. */
1631 const char *p = libgcc_spec;
1634 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1635 when given the proper command line arguments. */
1638 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1640 init_gcc_specs (&obstack,
1641 #ifdef NO_SHARED_LIBGCC_MULTILIB
1646 #ifdef USE_LIBUNWIND_EXCEPTIONS
1655 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1657 /* Ug. We don't know shared library extensions. Hope that
1658 systems that use this form don't do shared libraries. */
1659 init_gcc_specs (&obstack,
1660 #ifdef NO_SHARED_LIBGCC_MULTILIB
1673 obstack_1grow (&obstack, *p);
1674 in_sep = (*p == ' ');
1679 obstack_1grow (&obstack, '\0');
1680 libgcc_spec = obstack_finish (&obstack);
1683 #ifdef USE_AS_TRADITIONAL_FORMAT
1684 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1686 static const char tf[] = "--traditional-format ";
1687 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1688 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1689 asm_spec = obstack_finish (&obstack);
1693 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1694 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1695 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1696 link_spec = obstack_finish (&obstack);
1702 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1703 removed; If the spec starts with a + then SPEC is added to the end of the
1707 set_spec (const char *name, const char *spec)
1709 struct spec_list *sl;
1710 const char *old_spec;
1711 int name_len = strlen (name);
1714 /* If this is the first call, initialize the statically allocated specs. */
1717 struct spec_list *next = (struct spec_list *) 0;
1718 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1720 sl = &static_specs[i];
1727 /* See if the spec already exists. */
1728 for (sl = specs; sl; sl = sl->next)
1729 if (name_len == sl->name_len && !strcmp (sl->name, name))
1734 /* Not found - make it. */
1735 sl = xmalloc (sizeof (struct spec_list));
1736 sl->name = xstrdup (name);
1737 sl->name_len = name_len;
1738 sl->ptr_spec = &sl->ptr;
1740 *(sl->ptr_spec) = "";
1745 old_spec = *(sl->ptr_spec);
1746 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1747 ? concat (old_spec, spec + 1, NULL)
1752 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1755 /* Free the old spec. */
1756 if (old_spec && sl->alloc_p)
1757 free ((void *) old_spec);
1762 /* Accumulate a command (program name and args), and run it. */
1764 /* Vector of pointers to arguments in the current line of specifications. */
1766 static const char **argbuf;
1768 /* Number of elements allocated in argbuf. */
1770 static int argbuf_length;
1772 /* Number of elements in argbuf currently in use (containing args). */
1774 static int argbuf_index;
1776 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1777 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1780 static struct temp_name {
1781 const char *suffix; /* suffix associated with the code. */
1782 int length; /* strlen (suffix). */
1783 int unique; /* Indicates whether %g or %u/%U was used. */
1784 const char *filename; /* associated filename. */
1785 int filename_length; /* strlen (filename). */
1786 struct temp_name *next;
1789 /* Number of commands executed so far. */
1791 static int execution_count;
1793 /* Number of commands that exited with a signal. */
1795 static int signal_count;
1797 /* Name with which this program was invoked. */
1799 static const char *programname;
1801 /* Allocate the argument vector. */
1807 argbuf = xmalloc (argbuf_length * sizeof (const char *));
1810 /* Clear out the vector of arguments (after a command is executed). */
1818 /* Add one argument to the vector at the end.
1819 This is done when a space is seen or at the end of the line.
1820 If DELETE_ALWAYS is nonzero, the arg is a filename
1821 and the file should be deleted eventually.
1822 If DELETE_FAILURE is nonzero, the arg is a filename
1823 and the file should be deleted if this compilation fails. */
1826 store_arg (const char *arg, int delete_always, int delete_failure)
1828 if (argbuf_index + 1 == argbuf_length)
1829 argbuf = xrealloc (argbuf, (argbuf_length *= 2) * sizeof (const char *));
1831 argbuf[argbuf_index++] = arg;
1832 argbuf[argbuf_index] = 0;
1834 if (delete_always || delete_failure)
1835 record_temp_file (arg, delete_always, delete_failure);
1838 /* Load specs from a file name named FILENAME, replacing occurrences of
1839 various different types of line-endings, \r\n, \n\r and just \r, with
1843 load_specs (const char *filename)
1847 struct stat statbuf;
1854 notice ("Reading specs from %s\n", filename);
1856 /* Open and stat the file. */
1857 desc = open (filename, O_RDONLY, 0);
1859 pfatal_with_name (filename);
1860 if (stat (filename, &statbuf) < 0)
1861 pfatal_with_name (filename);
1863 /* Read contents of file into BUFFER. */
1864 buffer = xmalloc ((unsigned) statbuf.st_size + 1);
1865 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1867 pfatal_with_name (filename);
1868 buffer[readlen] = 0;
1871 specs = xmalloc (readlen + 1);
1873 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1879 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1881 else if (*(buffer_p + 1) == '\n') /* \r\n */
1895 /* Read compilation specs from a file named FILENAME,
1896 replacing the default ones.
1898 A suffix which starts with `*' is a definition for
1899 one of the machine-specific sub-specs. The "suffix" should be
1900 *asm, *cc1, *cpp, *link, *startfile, etc.
1901 The corresponding spec is stored in asm_spec, etc.,
1902 rather than in the `compilers' vector.
1904 Anything invalid in the file is a fatal error. */
1907 read_specs (const char *filename, int main_p)
1912 buffer = load_specs (filename);
1914 /* Scan BUFFER for specs, putting them in the vector. */
1920 char *in, *out, *p1, *p2, *p3;
1922 /* Advance P in BUFFER to the next nonblank nocomment line. */
1923 p = skip_whitespace (p);
1927 /* Is this a special command that starts with '%'? */
1928 /* Don't allow this for the main specs file, since it would
1929 encourage people to overwrite it. */
1930 if (*p == '%' && !main_p)
1933 while (*p && *p != '\n')
1939 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1940 && (p1[sizeof "%include" - 1] == ' '
1941 || p1[sizeof "%include" - 1] == '\t'))
1945 p1 += sizeof ("%include");
1946 while (*p1 == ' ' || *p1 == '\t')
1949 if (*p1++ != '<' || p[-2] != '>')
1950 fatal ("specs %%include syntax malformed after %ld characters",
1951 (long) (p1 - buffer + 1));
1954 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, 0);
1955 read_specs (new_filename ? new_filename : p1, FALSE);
1958 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1959 && (p1[sizeof "%include_noerr" - 1] == ' '
1960 || p1[sizeof "%include_noerr" - 1] == '\t'))
1964 p1 += sizeof "%include_noerr";
1965 while (*p1 == ' ' || *p1 == '\t')
1968 if (*p1++ != '<' || p[-2] != '>')
1969 fatal ("specs %%include syntax malformed after %ld characters",
1970 (long) (p1 - buffer + 1));
1973 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, 0);
1975 read_specs (new_filename, FALSE);
1976 else if (verbose_flag)
1977 notice ("could not find specs file %s\n", p1);
1980 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1981 && (p1[sizeof "%rename" - 1] == ' '
1982 || p1[sizeof "%rename" - 1] == '\t'))
1985 struct spec_list *sl;
1986 struct spec_list *newsl;
1988 /* Get original name. */
1989 p1 += sizeof "%rename";
1990 while (*p1 == ' ' || *p1 == '\t')
1993 if (! ISALPHA ((unsigned char) *p1))
1994 fatal ("specs %%rename syntax malformed after %ld characters",
1995 (long) (p1 - buffer));
1998 while (*p2 && !ISSPACE ((unsigned char) *p2))
2001 if (*p2 != ' ' && *p2 != '\t')
2002 fatal ("specs %%rename syntax malformed after %ld characters",
2003 (long) (p2 - buffer));
2007 while (*p2 == ' ' || *p2 == '\t')
2010 if (! ISALPHA ((unsigned char) *p2))
2011 fatal ("specs %%rename syntax malformed after %ld characters",
2012 (long) (p2 - buffer));
2014 /* Get new spec name. */
2016 while (*p3 && !ISSPACE ((unsigned char) *p3))
2020 fatal ("specs %%rename syntax malformed after %ld characters",
2021 (long) (p3 - buffer));
2024 for (sl = specs; sl; sl = sl->next)
2025 if (name_len == sl->name_len && !strcmp (sl->name, p1))
2029 fatal ("specs %s spec was not found to be renamed", p1);
2031 if (strcmp (p1, p2) == 0)
2034 for (newsl = specs; newsl; newsl = newsl->next)
2035 if (strcmp (newsl->name, p2) == 0)
2036 fatal ("%s: attempt to rename spec '%s' to already defined spec '%s'",
2041 notice ("rename spec %s to %s\n", p1, p2);
2043 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
2047 set_spec (p2, *(sl->ptr_spec));
2049 free ((void *) *(sl->ptr_spec));
2051 *(sl->ptr_spec) = "";
2056 fatal ("specs unknown %% command after %ld characters",
2057 (long) (p1 - buffer));
2060 /* Find the colon that should end the suffix. */
2062 while (*p1 && *p1 != ':' && *p1 != '\n')
2065 /* The colon shouldn't be missing. */
2067 fatal ("specs file malformed after %ld characters",
2068 (long) (p1 - buffer));
2070 /* Skip back over trailing whitespace. */
2072 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
2075 /* Copy the suffix to a string. */
2076 suffix = save_string (p, p2 - p);
2077 /* Find the next line. */
2078 p = skip_whitespace (p1 + 1);
2080 fatal ("specs file malformed after %ld characters",
2081 (long) (p - buffer));
2084 /* Find next blank line or end of string. */
2085 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
2088 /* Specs end at the blank line and do not include the newline. */
2089 spec = save_string (p, p1 - p);
2092 /* Delete backslash-newline sequences from the spec. */
2097 if (in[0] == '\\' && in[1] == '\n')
2099 else if (in[0] == '#')
2100 while (*in && *in != '\n')
2108 if (suffix[0] == '*')
2110 if (! strcmp (suffix, "*link_command"))
2111 link_command_spec = spec;
2113 set_spec (suffix + 1, spec);
2117 /* Add this pair to the vector. */
2119 = xrealloc (compilers,
2120 (n_compilers + 2) * sizeof (struct compiler));
2122 compilers[n_compilers].suffix = suffix;
2123 compilers[n_compilers].spec = spec;
2125 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2129 link_command_spec = spec;
2132 if (link_command_spec == 0)
2133 fatal ("spec file has no spec for linking");
2136 /* Record the names of temporary files we tell compilers to write,
2137 and delete them at the end of the run. */
2139 /* This is the common prefix we use to make temp file names.
2140 It is chosen once for each run of this program.
2141 It is substituted into a spec by %g or %j.
2142 Thus, all temp file names contain this prefix.
2143 In practice, all temp file names start with this prefix.
2145 This prefix comes from the envvar TMPDIR if it is defined;
2146 otherwise, from the P_tmpdir macro if that is defined;
2147 otherwise, in /usr/tmp or /tmp;
2148 or finally the current directory if all else fails. */
2150 static const char *temp_filename;
2152 /* Length of the prefix. */
2154 static int temp_filename_length;
2156 /* Define the list of temporary files to delete. */
2161 struct temp_file *next;
2164 /* Queue of files to delete on success or failure of compilation. */
2165 static struct temp_file *always_delete_queue;
2166 /* Queue of files to delete on failure of compilation. */
2167 static struct temp_file *failure_delete_queue;
2169 /* Record FILENAME as a file to be deleted automatically.
2170 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2171 otherwise delete it in any case.
2172 FAIL_DELETE nonzero means delete it if a compilation step fails;
2173 otherwise delete it in any case. */
2176 record_temp_file (const char *filename, int always_delete, int fail_delete)
2178 char *const name = xstrdup (filename);
2182 struct temp_file *temp;
2183 for (temp = always_delete_queue; temp; temp = temp->next)
2184 if (! strcmp (name, temp->name))
2187 temp = xmalloc (sizeof (struct temp_file));
2188 temp->next = always_delete_queue;
2190 always_delete_queue = temp;
2197 struct temp_file *temp;
2198 for (temp = failure_delete_queue; temp; temp = temp->next)
2199 if (! strcmp (name, temp->name))
2202 temp = xmalloc (sizeof (struct temp_file));
2203 temp->next = failure_delete_queue;
2205 failure_delete_queue = temp;
2211 /* Delete all the temporary files whose names we previously recorded. */
2214 delete_if_ordinary (const char *name)
2220 printf ("Delete %s? (y or n) ", name);
2224 while ((c = getchar ()) != '\n' && c != EOF)
2227 if (i == 'y' || i == 'Y')
2229 if (stat (name, &st) >= 0 && S_ISREG (st.st_mode))
2230 if (unlink (name) < 0)
2232 perror_with_name (name);
2236 delete_temp_files (void)
2238 struct temp_file *temp;
2240 for (temp = always_delete_queue; temp; temp = temp->next)
2241 delete_if_ordinary (temp->name);
2242 always_delete_queue = 0;
2245 /* Delete all the files to be deleted on error. */
2248 delete_failure_queue (void)
2250 struct temp_file *temp;
2252 for (temp = failure_delete_queue; temp; temp = temp->next)
2253 delete_if_ordinary (temp->name);
2257 clear_failure_queue (void)
2259 failure_delete_queue = 0;
2262 /* Build a list of search directories from PATHS.
2263 PREFIX is a string to prepend to the list.
2264 If CHECK_DIR_P is nonzero we ensure the directory exists.
2265 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2266 It is also used by the --print-search-dirs flag. */
2269 build_search_list (struct path_prefix *paths, const char *prefix,
2272 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0;
2274 = (just_machine_suffix) ? strlen (just_machine_suffix) : 0;
2275 int first_time = TRUE;
2276 struct prefix_list *pprefix;
2278 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2279 obstack_1grow (&collect_obstack, '=');
2281 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next)
2283 int len = strlen (pprefix->prefix);
2287 || is_directory (pprefix->prefix, machine_suffix, 0)))
2290 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2293 obstack_grow (&collect_obstack, pprefix->prefix, len);
2294 obstack_grow (&collect_obstack, machine_suffix, suffix_len);
2297 if (just_machine_suffix
2298 && pprefix->require_machine_suffix == 2
2300 || is_directory (pprefix->prefix, just_machine_suffix, 0)))
2303 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2306 obstack_grow (&collect_obstack, pprefix->prefix, len);
2307 obstack_grow (&collect_obstack, just_machine_suffix,
2311 if (! pprefix->require_machine_suffix)
2314 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2317 obstack_grow (&collect_obstack, pprefix->prefix, len);
2321 obstack_1grow (&collect_obstack, '\0');
2322 return obstack_finish (&collect_obstack);
2325 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2329 putenv_from_prefixes (struct path_prefix *paths, const char *env_var)
2331 putenv (build_search_list (paths, env_var, 1));
2334 /* Check whether NAME can be accessed in MODE. This is like access,
2335 except that it never considers directories to be executable. */
2338 access_check (const char *name, int mode)
2344 if (stat (name, &st) < 0
2345 || S_ISDIR (st.st_mode))
2349 return access (name, mode);
2352 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2353 access to check permissions.
2354 Return 0 if not found, otherwise return its name, allocated with malloc. */
2357 find_a_file (struct path_prefix *pprefix, const char *name, int mode,
2361 const char *const file_suffix =
2362 ((mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "");
2363 struct prefix_list *pl;
2364 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1;
2365 const char *multilib_name, *multilib_os_name;
2367 #ifdef DEFAULT_ASSEMBLER
2368 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2369 return xstrdup (DEFAULT_ASSEMBLER);
2372 #ifdef DEFAULT_LINKER
2373 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2374 return xstrdup (DEFAULT_LINKER);
2378 len += strlen (machine_suffix);
2380 multilib_name = name;
2381 multilib_os_name = name;
2382 if (multilib && multilib_os_dir)
2384 int len1 = multilib_dir ? strlen (multilib_dir) + 1 : 0;
2385 int len2 = strlen (multilib_os_dir) + 1;
2387 len += len1 > len2 ? len1 : len2;
2389 multilib_name = ACONCAT ((multilib_dir, dir_separator_str, name,
2391 if (strcmp (multilib_os_dir, ".") != 0)
2392 multilib_os_name = ACONCAT ((multilib_os_dir, dir_separator_str, name,
2396 temp = xmalloc (len);
2398 /* Determine the filename to execute (special case for absolute paths). */
2400 if (IS_ABSOLUTE_PATH (name))
2402 if (access (name, mode) == 0)
2404 strcpy (temp, name);
2409 for (pl = pprefix->plist; pl; pl = pl->next)
2411 const char *this_name
2412 = pl->os_multilib ? multilib_os_name : multilib_name;
2416 /* Some systems have a suffix for executable files.
2417 So try appending that first. */
2418 if (file_suffix[0] != 0)
2420 strcpy (temp, pl->prefix);
2421 strcat (temp, machine_suffix);
2422 strcat (temp, multilib_name);
2423 strcat (temp, file_suffix);
2424 if (access_check (temp, mode) == 0)
2426 if (pl->used_flag_ptr != 0)
2427 *pl->used_flag_ptr = 1;
2432 /* Now try just the multilib_name. */
2433 strcpy (temp, pl->prefix);
2434 strcat (temp, machine_suffix);
2435 strcat (temp, multilib_name);
2436 if (access_check (temp, mode) == 0)
2438 if (pl->used_flag_ptr != 0)
2439 *pl->used_flag_ptr = 1;
2444 /* Certain prefixes are tried with just the machine type,
2445 not the version. This is used for finding as, ld, etc. */
2446 if (just_machine_suffix && pl->require_machine_suffix == 2)
2448 /* Some systems have a suffix for executable files.
2449 So try appending that first. */
2450 if (file_suffix[0] != 0)
2452 strcpy (temp, pl->prefix);
2453 strcat (temp, just_machine_suffix);
2454 strcat (temp, multilib_name);
2455 strcat (temp, file_suffix);
2456 if (access_check (temp, mode) == 0)
2458 if (pl->used_flag_ptr != 0)
2459 *pl->used_flag_ptr = 1;
2464 strcpy (temp, pl->prefix);
2465 strcat (temp, just_machine_suffix);
2466 strcat (temp, multilib_name);
2467 if (access_check (temp, mode) == 0)
2469 if (pl->used_flag_ptr != 0)
2470 *pl->used_flag_ptr = 1;
2475 /* Certain prefixes can't be used without the machine suffix
2476 when the machine or version is explicitly specified. */
2477 if (! pl->require_machine_suffix)
2479 /* Some systems have a suffix for executable files.
2480 So try appending that first. */
2481 if (file_suffix[0] != 0)
2483 strcpy (temp, pl->prefix);
2484 strcat (temp, this_name);
2485 strcat (temp, file_suffix);
2486 if (access_check (temp, mode) == 0)
2488 if (pl->used_flag_ptr != 0)
2489 *pl->used_flag_ptr = 1;
2494 strcpy (temp, pl->prefix);
2495 strcat (temp, this_name);
2496 if (access_check (temp, mode) == 0)
2498 if (pl->used_flag_ptr != 0)
2499 *pl->used_flag_ptr = 1;
2509 /* Ranking of prefixes in the sort list. -B prefixes are put before
2512 enum path_prefix_priority
2514 PREFIX_PRIORITY_B_OPT,
2515 PREFIX_PRIORITY_LAST
2518 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2519 order according to PRIORITY. Within each PRIORITY, new entries are
2522 If WARN is nonzero, we will warn if no file is found
2523 through this prefix. WARN should point to an int
2524 which will be set to 1 if this entry is used.
2526 COMPONENT is the value to be passed to update_path.
2528 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2529 the complete value of machine_suffix.
2530 2 means try both machine_suffix and just_machine_suffix. */
2533 add_prefix (struct path_prefix *pprefix, const char *prefix,
2534 const char *component, /* enum prefix_priority */ int priority,
2535 int require_machine_suffix, int *warn, int os_multilib)
2537 struct prefix_list *pl, **prev;
2540 for (prev = &pprefix->plist;
2541 (*prev) != NULL && (*prev)->priority <= priority;
2542 prev = &(*prev)->next)
2545 /* Keep track of the longest prefix. */
2547 prefix = update_path (prefix, component);
2548 len = strlen (prefix);
2549 if (len > pprefix->max_len)
2550 pprefix->max_len = len;
2552 pl = xmalloc (sizeof (struct prefix_list));
2553 pl->prefix = prefix;
2554 pl->require_machine_suffix = require_machine_suffix;
2555 pl->used_flag_ptr = warn;
2556 pl->priority = priority;
2557 pl->os_multilib = os_multilib;
2561 /* Insert after PREV. */
2566 /* Same as add_prefix, but prepending target_system_root to prefix. */
2568 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2569 const char *component,
2570 /* enum prefix_priority */ int priority,
2571 int require_machine_suffix, int *warn, int os_multilib)
2573 if (!IS_ABSOLUTE_PATH (prefix))
2576 if (target_system_root)
2578 if (target_sysroot_suffix)
2579 prefix = concat (target_sysroot_suffix, prefix, NULL);
2580 prefix = concat (target_system_root, prefix, NULL);
2582 /* We have to override this because GCC's notion of sysroot
2583 moves along with GCC. */
2587 add_prefix (pprefix, prefix, component, priority,
2588 require_machine_suffix, warn, os_multilib);
2591 /* Execute the command specified by the arguments on the current line of spec.
2592 When using pipes, this includes several piped-together commands
2593 with `|' between them.
2595 Return 0 if successful, -1 if failed. */
2601 int n_commands; /* # of command. */
2605 const char *prog; /* program name. */
2606 const char **argv; /* vector of args. */
2607 int pid; /* pid of process for this command. */
2610 struct command *commands; /* each command buffer with above info. */
2612 if (processing_spec_function)
2615 /* Count # of piped commands. */
2616 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2617 if (strcmp (argbuf[i], "|") == 0)
2620 /* Get storage for each command. */
2621 commands = alloca (n_commands * sizeof (struct command));
2623 /* Split argbuf into its separate piped processes,
2624 and record info about each one.
2625 Also search for the programs that are to be run. */
2627 commands[0].prog = argbuf[0]; /* first command. */
2628 commands[0].argv = &argbuf[0];
2629 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, 0);
2632 commands[0].argv[0] = string;
2634 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2635 if (strcmp (argbuf[i], "|") == 0)
2636 { /* each command. */
2637 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2638 fatal ("-pipe not supported");
2640 argbuf[i] = 0; /* termination of command args. */
2641 commands[n_commands].prog = argbuf[i + 1];
2642 commands[n_commands].argv = &argbuf[i + 1];
2643 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2646 commands[n_commands].argv[0] = string;
2650 argbuf[argbuf_index] = 0;
2652 /* If -v, print what we are about to do, and maybe query. */
2656 /* For help listings, put a blank line between sub-processes. */
2657 if (print_help_list)
2658 fputc ('\n', stderr);
2660 /* Print each piped command as a separate line. */
2661 for (i = 0; i < n_commands; i++)
2663 const char *const *j;
2665 if (verbose_only_flag)
2667 for (j = commands[i].argv; *j; j++)
2670 fprintf (stderr, " \"");
2671 for (p = *j; *p; ++p)
2673 if (*p == '"' || *p == '\\' || *p == '$')
2674 fputc ('\\', stderr);
2677 fputc ('"', stderr);
2681 for (j = commands[i].argv; *j; j++)
2682 fprintf (stderr, " %s", *j);
2684 /* Print a pipe symbol after all but the last command. */
2685 if (i + 1 != n_commands)
2686 fprintf (stderr, " |");
2687 fprintf (stderr, "\n");
2690 if (verbose_only_flag != 0)
2693 notice ("\nGo ahead? (y or n) ");
2697 while (getchar () != '\n')
2700 if (i != 'y' && i != 'Y')
2705 #ifdef ENABLE_VALGRIND_CHECKING
2706 /* Run the each command through valgrind. To simplify prepending the
2707 path to valgrind and the option "-q" (for quiet operation unless
2708 something triggers), we allocate a separate argv array. */
2710 for (i = 0; i < n_commands; i++)
2716 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2719 argv = alloca ((argc + 3) * sizeof (char *));
2721 argv[0] = VALGRIND_PATH;
2723 for (j = 2; j < argc + 2; j++)
2724 argv[j] = commands[i].argv[j - 2];
2727 commands[i].argv = argv;
2728 commands[i].prog = argv[0];
2732 /* Run each piped subprocess. */
2734 for (i = 0; i < n_commands; i++)
2736 char *errmsg_fmt, *errmsg_arg;
2737 const char *string = commands[i].argv[0];
2739 /* For some bizarre reason, the second argument of execvp() is
2740 char *const *, not const char *const *. */
2741 commands[i].pid = pexecute (string, (char *const *) commands[i].argv,
2742 programname, temp_filename,
2743 &errmsg_fmt, &errmsg_arg,
2744 ((i == 0 ? PEXECUTE_FIRST : 0)
2745 | (i + 1 == n_commands ? PEXECUTE_LAST : 0)
2746 | (string == commands[i].prog
2747 ? PEXECUTE_SEARCH : 0)
2748 | (verbose_flag ? PEXECUTE_VERBOSE : 0)));
2750 if (commands[i].pid == -1)
2751 pfatal_pexecute (errmsg_fmt, errmsg_arg);
2753 if (string != commands[i].prog)
2754 free ((void *) string);
2759 /* Wait for all the subprocesses to finish.
2760 We don't care what order they finish in;
2761 we know that N_COMMANDS waits will get them all.
2762 Ignore subprocesses that we don't know about,
2763 since they can be spawned by the process that exec'ed us. */
2767 #ifdef HAVE_GETRUSAGE
2769 double ut = 0.0, st = 0.0;
2772 for (i = 0; i < n_commands;)
2778 pid = pwait (commands[i].pid, &status, 0);
2782 #ifdef HAVE_GETRUSAGE
2785 /* getrusage returns the total resource usage of all children
2786 up to now. Copy the previous values into prus, get the
2787 current statistics, then take the difference. */
2790 getrusage (RUSAGE_CHILDREN, &rus);
2791 d.tv_sec = rus.ru_utime.tv_sec - prus.ru_utime.tv_sec;
2792 d.tv_usec = rus.ru_utime.tv_usec - prus.ru_utime.tv_usec;
2793 ut = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2795 d.tv_sec = rus.ru_stime.tv_sec - prus.ru_stime.tv_sec;
2796 d.tv_usec = rus.ru_stime.tv_usec - prus.ru_stime.tv_usec;
2797 st = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2801 for (j = 0; j < n_commands; j++)
2802 if (commands[j].pid == pid)
2805 if (WIFSIGNALED (status))
2808 /* SIGPIPE is a special case. It happens in -pipe mode
2809 when the compiler dies before the preprocessor is
2810 done, or the assembler dies before the compiler is
2811 done. There's generally been an error already, and
2812 this is just fallout. So don't generate another error
2813 unless we would otherwise have succeeded. */
2814 if (WTERMSIG (status) == SIGPIPE
2815 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2820 Internal error: %s (program %s)\n\
2821 Please submit a full bug report.\n\
2822 See %s for instructions.",
2823 strsignal (WTERMSIG (status)), commands[j].prog,
2828 else if (WIFEXITED (status)
2829 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2831 if (WEXITSTATUS (status) > greatest_status)
2832 greatest_status = WEXITSTATUS (status);
2835 #ifdef HAVE_GETRUSAGE
2836 if (report_times && ut + st != 0)
2837 notice ("# %s %.2f %.2f\n", commands[j].prog, ut, st);
2846 /* Find all the switches given to us
2847 and make a vector describing them.
2848 The elements of the vector are strings, one per switch given.
2849 If a switch uses following arguments, then the `part1' field
2850 is the switch itself and the `args' field
2851 is a null-terminated vector containing the following arguments.
2852 The `live_cond' field is:
2854 1 if the switch is true in a conditional spec,
2855 -1 if false (overridden by a later switch)
2856 -2 if this switch should be ignored (used in %<S)
2857 The `validated' field is nonzero if any spec has looked at this switch;
2858 if it remains zero at the end of the run, it must be meaningless. */
2861 #define SWITCH_FALSE -1
2862 #define SWITCH_IGNORE -2
2863 #define SWITCH_LIVE 1
2870 unsigned char validated;
2871 unsigned char ordering;
2874 static struct switchstr *switches;
2876 static int n_switches;
2881 const char *language;
2884 /* Also a vector of input files specified. */
2886 static struct infile *infiles;
2890 /* True if multiple input files are being compiled to a single
2893 static bool combine_inputs;
2895 /* This counts the number of libraries added by lang_specific_driver, so that
2896 we can tell if there were any user supplied any files or libraries. */
2898 static int added_libraries;
2900 /* And a vector of corresponding output files is made up later. */
2902 const char **outfiles;
2904 /* Used to track if none of the -B paths are used. */
2907 /* Gives value to pass as "warn" to add_prefix for standard prefixes. */
2908 static int *warn_std_ptr = 0;
2910 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2912 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2913 is true if we should look for an executable suffix. DO_OBJ
2914 is true if we should look for an object suffix. */
2917 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
2918 int do_obj ATTRIBUTE_UNUSED)
2920 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2928 len = strlen (name);
2930 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2931 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2932 if (do_obj && len > 2
2933 && name[len - 2] == '.'
2934 && name[len - 1] == 'o')
2936 obstack_grow (&obstack, name, len - 2);
2937 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2938 name = obstack_finish (&obstack);
2942 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2943 /* If there is no filetype, make it the executable suffix (which includes
2944 the "."). But don't get confused if we have just "-o". */
2945 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
2948 for (i = len - 1; i >= 0; i--)
2949 if (IS_DIR_SEPARATOR (name[i]))
2952 for (i++; i < len; i++)
2956 obstack_grow (&obstack, name, len);
2957 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
2958 strlen (TARGET_EXECUTABLE_SUFFIX));
2959 name = obstack_finish (&obstack);
2966 /* Display the command line switches accepted by gcc. */
2970 printf (_("Usage: %s [options] file...\n"), programname);
2971 fputs (_("Options:\n"), stdout);
2973 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
2974 fputs (_(" --help Display this information\n"), stdout);
2975 fputs (_(" --target-help Display target specific command line options\n"), stdout);
2977 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
2978 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
2979 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
2980 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
2981 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
2982 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
2983 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
2984 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
2985 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
2987 -print-multi-lib Display the mapping between command line options and\n\
2988 multiple library search directories\n"), stdout);
2989 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
2990 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
2991 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
2992 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
2993 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
2994 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
2995 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
2996 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
2997 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
2998 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
2999 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3000 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3001 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3002 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
3003 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
3004 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3005 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3006 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3007 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3008 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3009 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3011 -x <language> Specify the language of the following input files\n\
3012 Permissible languages include: c c++ assembler none\n\
3013 'none' means revert to the default behavior of\n\
3014 guessing the language based on the file's extension\n\
3018 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3019 passed on to the various sub-processes invoked by %s. In order to pass\n\
3020 other options on to these processes the -W<letter> options must be used.\n\
3023 /* The rest of the options are displayed by invocations of the various
3028 add_preprocessor_option (const char *option, int len)
3030 n_preprocessor_options++;
3032 if (! preprocessor_options)
3033 preprocessor_options = xmalloc (n_preprocessor_options * sizeof (char *));
3035 preprocessor_options = xrealloc (preprocessor_options,
3036 n_preprocessor_options * sizeof (char *));
3038 preprocessor_options [n_preprocessor_options - 1] =
3039 save_string (option, len);
3043 add_assembler_option (const char *option, int len)
3045 n_assembler_options++;
3047 if (! assembler_options)
3048 assembler_options = xmalloc (n_assembler_options * sizeof (char *));
3050 assembler_options = xrealloc (assembler_options,
3051 n_assembler_options * sizeof (char *));
3053 assembler_options [n_assembler_options - 1] = save_string (option, len);
3057 add_linker_option (const char *option, int len)
3061 if (! linker_options)
3062 linker_options = xmalloc (n_linker_options * sizeof (char *));
3064 linker_options = xrealloc (linker_options,
3065 n_linker_options * sizeof (char *));
3067 linker_options [n_linker_options - 1] = save_string (option, len);
3070 /* Create the vector `switches' and its contents.
3071 Store its length in `n_switches'. */
3074 process_command (int argc, const char *const *argv)
3079 const char *spec_lang = 0;
3080 int last_language_n_infiles;
3083 int lang_n_infiles = 0;
3084 #ifdef MODIFY_TARGET_NAME
3085 int is_modify_target_name;
3089 GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3093 added_libraries = 0;
3095 /* Figure compiler version from version string. */
3097 compiler_version = temp1 = xstrdup (version_string);
3099 for (; *temp1; ++temp1)
3108 /* If there is a -V or -b option (or both), process it now, before
3109 trying to interpret the rest of the command line. */
3110 if (argc > 1 && argv[1][0] == '-'
3111 && (argv[1][1] == 'V' || argv[1][1] == 'b'))
3113 const char *new_version = DEFAULT_TARGET_VERSION;
3114 const char *new_machine = DEFAULT_TARGET_MACHINE;
3115 const char *progname = argv[0];
3120 while (argc > 1 && argv[1][0] == '-'
3121 && (argv[1][1] == 'V' || argv[1][1] == 'b'))
3123 char opt = argv[1][1];
3125 if (argv[1][2] != '\0')
3138 fatal ("`-%c' option must have argument", opt);
3145 for (baselen = strlen (progname); baselen > 0; baselen--)
3146 if (IS_DIR_SEPARATOR (progname[baselen-1]))
3148 new_argv0 = xmemdup (progname, baselen,
3149 baselen + concat_length (new_version, new_machine,
3150 "-gcc-", NULL) + 1);
3151 strcpy (new_argv0 + baselen, new_machine);
3152 strcat (new_argv0, "-gcc-");
3153 strcat (new_argv0, new_version);
3155 new_argv = xmemdup (argv, (argc + 1) * sizeof (argv[0]),
3156 (argc + 1) * sizeof (argv[0]));
3157 new_argv[0] = new_argv0;
3159 execvp (new_argv0, new_argv);
3160 fatal ("couldn't run `%s': %s", new_argv0, xstrerror (errno));
3163 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3164 see if we can create it from the pathname specified in argv[0]. */
3167 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3168 if (!gcc_exec_prefix)
3170 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
3171 standard_exec_prefix);
3172 if (gcc_exec_prefix)
3173 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3177 if (gcc_exec_prefix)
3179 int len = strlen (gcc_exec_prefix);
3181 if (len > (int) sizeof ("/lib/gcc-lib/") - 1
3182 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3184 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc-lib/") + 1;
3185 if (IS_DIR_SEPARATOR (*temp)
3186 && strncmp (temp + 1, "lib", 3) == 0
3187 && IS_DIR_SEPARATOR (temp[4])
3188 && strncmp (temp + 5, "gcc-lib", 7) == 0)
3189 len -= sizeof ("/lib/gcc-lib/") - 1;
3192 set_std_prefix (gcc_exec_prefix, len);
3193 add_prefix (&exec_prefixes, gcc_exec_prefix, "GCC",
3194 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3195 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3196 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3199 /* COMPILER_PATH and LIBRARY_PATH have values
3200 that are lists of directory names with colons. */
3202 GET_ENVIRONMENT (temp, "COMPILER_PATH");
3205 const char *startp, *endp;
3206 char *nstore = alloca (strlen (temp) + 3);
3208 startp = endp = temp;
3211 if (*endp == PATH_SEPARATOR || *endp == 0)
3213 strncpy (nstore, startp, endp - startp);
3215 strcpy (nstore, concat (".", dir_separator_str, NULL));
3216 else if (!IS_DIR_SEPARATOR (endp[-1]))
3218 nstore[endp - startp] = DIR_SEPARATOR;
3219 nstore[endp - startp + 1] = 0;
3222 nstore[endp - startp] = 0;
3223 add_prefix (&exec_prefixes, nstore, 0,
3224 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3225 add_prefix (&include_prefixes,
3226 concat (nstore, "include", NULL),
3227 0, PREFIX_PRIORITY_LAST, 0, NULL, 0);
3230 endp = startp = endp + 1;
3237 GET_ENVIRONMENT (temp, LIBRARY_PATH_ENV);
3238 if (temp && *cross_compile == '0')
3240 const char *startp, *endp;
3241 char *nstore = alloca (strlen (temp) + 3);
3243 startp = endp = temp;
3246 if (*endp == PATH_SEPARATOR || *endp == 0)
3248 strncpy (nstore, startp, endp - startp);
3250 strcpy (nstore, concat (".", dir_separator_str, NULL));
3251 else if (!IS_DIR_SEPARATOR (endp[-1]))
3253 nstore[endp - startp] = DIR_SEPARATOR;
3254 nstore[endp - startp + 1] = 0;
3257 nstore[endp - startp] = 0;
3258 add_prefix (&startfile_prefixes, nstore, NULL,
3259 PREFIX_PRIORITY_LAST, 0, NULL, 1);
3262 endp = startp = endp + 1;
3269 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3270 GET_ENVIRONMENT (temp, "LPATH");
3271 if (temp && *cross_compile == '0')
3273 const char *startp, *endp;
3274 char *nstore = alloca (strlen (temp) + 3);
3276 startp = endp = temp;
3279 if (*endp == PATH_SEPARATOR || *endp == 0)
3281 strncpy (nstore, startp, endp - startp);
3283 strcpy (nstore, concat (".", dir_separator_str, NULL));
3284 else if (!IS_DIR_SEPARATOR (endp[-1]))
3286 nstore[endp - startp] = DIR_SEPARATOR;
3287 nstore[endp - startp + 1] = 0;
3290 nstore[endp - startp] = 0;
3291 add_prefix (&startfile_prefixes, nstore, NULL,
3292 PREFIX_PRIORITY_LAST, 0, NULL, 1);
3295 endp = startp = endp + 1;
3302 /* Convert new-style -- options to old-style. */
3303 translate_options (&argc, &argv);
3305 /* Do language-specific adjustment/addition of flags. */
3306 lang_specific_driver (&argc, &argv, &added_libraries);
3308 /* Scan argv twice. Here, the first time, just count how many switches
3309 there will be in their vector, and how many input files in theirs.
3310 Here we also parse the switches that cc itself uses (e.g. -v). */
3312 for (i = 1; i < argc; i++)
3314 if (! strcmp (argv[i], "-dumpspecs"))
3316 struct spec_list *sl;
3318 for (sl = specs; sl; sl = sl->next)
3319 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3320 if (link_command_spec)
3321 printf ("*link_command:\n%s\n\n", link_command_spec);
3324 else if (! strcmp (argv[i], "-dumpversion"))
3326 printf ("%s\n", spec_version);
3329 else if (! strcmp (argv[i], "-dumpmachine"))
3331 printf ("%s\n", spec_machine);
3334 else if (strcmp (argv[i], "-fversion") == 0)
3336 /* translate_options () has turned --version into -fversion. */
3337 printf (_("%s (GCC) %s\n"), programname, version_string);
3338 fputs (_("Copyright (C) 2003 Free Software Foundation, Inc.\n"),
3340 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
3341 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
3345 else if (strcmp (argv[i], "-fhelp") == 0)
3347 /* translate_options () has turned --help into -fhelp. */
3348 print_help_list = 1;
3350 /* We will be passing a dummy file on to the sub-processes. */
3354 /* CPP driver cannot obtain switch from cc1_options. */
3356 add_preprocessor_option ("--help", 6);
3357 add_assembler_option ("--help", 6);
3358 add_linker_option ("--help", 6);
3360 else if (strcmp (argv[i], "-ftarget-help") == 0)
3362 /* translate_options() has turned --target-help into -ftarget-help. */
3363 target_help_flag = 1;
3365 /* We will be passing a dummy file on to the sub-processes. */
3369 /* CPP driver cannot obtain switch from cc1_options. */
3371 add_preprocessor_option ("--target-help", 13);
3372 add_assembler_option ("--target-help", 13);
3373 add_linker_option ("--target-help", 13);
3375 else if (! strcmp (argv[i], "-pass-exit-codes"))
3377 pass_exit_codes = 1;
3380 else if (! strcmp (argv[i], "-print-search-dirs"))
3381 print_search_dirs = 1;
3382 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3383 print_file_name = "libgcc.a";
3384 else if (! strncmp (argv[i], "-print-file-name=", 17))
3385 print_file_name = argv[i] + 17;
3386 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3387 print_prog_name = argv[i] + 17;
3388 else if (! strcmp (argv[i], "-print-multi-lib"))
3389 print_multi_lib = 1;
3390 else if (! strcmp (argv[i], "-print-multi-directory"))
3391 print_multi_directory = 1;
3392 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3393 print_multi_os_directory = 1;
3394 else if (! strncmp (argv[i], "-Wa,", 4))
3397 /* Pass the rest of this option to the assembler. */
3399 /* Split the argument at commas. */
3401 for (j = 4; argv[i][j]; j++)
3402 if (argv[i][j] == ',')
3404 add_assembler_option (argv[i] + prev, j - prev);
3408 /* Record the part after the last comma. */
3409 add_assembler_option (argv[i] + prev, j - prev);
3411 else if (! strncmp (argv[i], "-Wp,", 4))
3414 /* Pass the rest of this option to the preprocessor. */
3416 /* Split the argument at commas. */
3418 for (j = 4; argv[i][j]; j++)
3419 if (argv[i][j] == ',')
3421 add_preprocessor_option (argv[i] + prev, j - prev);
3425 /* Record the part after the last comma. */
3426 add_preprocessor_option (argv[i] + prev, j - prev);
3428 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3429 /* The +e options to the C++ front-end. */
3431 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3434 /* Split the argument at commas. */
3435 for (j = 3; argv[i][j]; j++)
3436 n_infiles += (argv[i][j] == ',');
3438 else if (strcmp (argv[i], "-Xlinker") == 0)
3441 fatal ("argument to `-Xlinker' is missing");
3446 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3449 fatal ("argument to `-Xpreprocessor' is missing");
3451 add_preprocessor_option (argv[i+1], strlen (argv[i+1]));
3453 else if (strcmp (argv[i], "-Xassembler") == 0)
3456 fatal ("argument to `-Xassembler' is missing");
3458 add_assembler_option (argv[i+1], strlen (argv[i+1]));
3460 else if (strcmp (argv[i], "-l") == 0)
3463 fatal ("argument to `-l' is missing");
3468 else if (strncmp (argv[i], "-l", 2) == 0)
3470 else if (strcmp (argv[i], "-save-temps") == 0)
3472 save_temps_flag = 1;
3475 else if (strcmp (argv[i], "-specs") == 0)
3477 struct user_specs *user = xmalloc (sizeof (struct user_specs));
3479 fatal ("argument to `-specs' is missing");
3481 user->next = (struct user_specs *) 0;
3482 user->filename = argv[i];
3483 if (user_specs_tail)
3484 user_specs_tail->next = user;
3486 user_specs_head = user;
3487 user_specs_tail = user;
3489 else if (strncmp (argv[i], "-specs=", 7) == 0)
3491 struct user_specs *user = xmalloc (sizeof (struct user_specs));
3492 if (strlen (argv[i]) == 7)
3493 fatal ("argument to `-specs=' is missing");
3495 user->next = (struct user_specs *) 0;
3496 user->filename = argv[i] + 7;
3497 if (user_specs_tail)
3498 user_specs_tail->next = user;
3500 user_specs_head = user;
3501 user_specs_tail = user;
3503 else if (strcmp (argv[i], "-time") == 0)
3505 else if (strcmp (argv[i], "-pipe") == 0)
3507 /* -pipe has to go into the switches array as well as
3512 else if (strcmp (argv[i], "-###") == 0)
3514 /* This is similar to -v except that there is no execution
3515 of the commands and the echoed arguments are quoted. It
3516 is intended for use in shell scripts to capture the
3517 driver-generated command line. */
3518 verbose_only_flag++;
3521 else if (argv[i][0] == '-' && argv[i][1] != 0)
3523 const char *p = &argv[i][1];
3530 fatal ("`-%c' must come at the start of the command line", c);
3538 if (p[1] == 0 && i + 1 == argc)
3539 fatal ("argument to `-B' is missing");
3545 len = strlen (value);
3547 /* Catch the case where the user has forgotten to append a
3548 directory separator to the path. Note, they may be using
3549 -B to add an executable name prefix, eg "i386-elf-", in
3550 order to distinguish between multiple installations of
3551 GCC in the same directory. Hence we must check to see
3552 if appending a directory separator actually makes a
3553 valid directory name. */
3554 if (! IS_DIR_SEPARATOR (value [len - 1])
3555 && is_directory (value, "", 0))
3557 char *tmp = xmalloc (len + 2);
3558 strcpy (tmp, value);
3559 tmp[len] = DIR_SEPARATOR;
3564 /* As a kludge, if the arg is "[foo/]stageN/", just
3565 add "[foo/]include" to the include prefix. */
3568 && (IS_DIR_SEPARATOR (value[len - 8]))))
3569 && strncmp (value + len - 7, "stage", 5) == 0
3570 && ISDIGIT (value[len - 2])
3571 && (IS_DIR_SEPARATOR (value[len - 1])))
3574 add_prefix (&include_prefixes, "include", NULL,
3575 PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3578 char * string = xmalloc (len + 1);
3580 strncpy (string, value, len - 7);
3581 strcpy (string + len - 7, "include");
3582 add_prefix (&include_prefixes, string, NULL,
3583 PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3587 add_prefix (&exec_prefixes, value, NULL,
3588 PREFIX_PRIORITY_B_OPT, 0, &warn_B, 0);
3589 add_prefix (&startfile_prefixes, value, NULL,
3590 PREFIX_PRIORITY_B_OPT, 0, &warn_B, 0);
3591 add_prefix (&include_prefixes, concat (value, "include", NULL),
3592 NULL, PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3597 case 'v': /* Print our subcommands and print versions. */
3599 /* If they do anything other than exactly `-v', don't set
3600 verbose_flag; rather, continue on to give the error. */
3618 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3623 /* Forward scan, just in case -S or -c is specified
3630 if (argv[j][0] == '-')
3632 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
3638 else if ((skip = SWITCH_TAKES_ARG (argv[j][1])))
3639 j += skip - (argv[j][2] != 0);
3640 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1)))
3647 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3649 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0);
3651 argv[i] = convert_filename (argv[i], ! have_c, 0);
3658 #ifdef MODIFY_TARGET_NAME
3659 is_modify_target_name = 0;
3661 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3662 if (! strcmp (argv[i], modify_target[j].sw))
3664 char *new_name = xmalloc (strlen (modify_target[j].str)
3665 + strlen (spec_machine));
3668 int made_addition = 0;
3670 is_modify_target_name = 1;
3671 for (p = spec_machine, q = new_name; *p != 0; )
3673 if (modify_target[j].add_del == DELETE
3674 && (! strncmp (q, modify_target[j].str,
3675 strlen (modify_target[j].str))))
3676 p += strlen (modify_target[j].str);
3677 else if (modify_target[j].add_del == ADD
3678 && ! made_addition && *p == '-')
3680 for (r = modify_target[j].str; *r != 0; )
3688 spec_machine = new_name;
3691 if (is_modify_target_name)
3697 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
3698 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
3699 else if (WORD_SWITCH_TAKES_ARG (p))
3700 i += WORD_SWITCH_TAKES_ARG (p);
3710 combine_inputs = (have_c && have_o && lang_n_infiles > 1);
3712 if ((save_temps_flag || report_times) && use_pipes)
3714 /* -save-temps overrides -pipe, so that temp files are produced */
3715 if (save_temps_flag)
3716 error ("warning: -pipe ignored because -save-temps specified");
3717 /* -time overrides -pipe because we can't get correct stats when
3718 multiple children are running at once. */
3719 else if (report_times)
3720 error ("warning: -pipe ignored because -time specified");
3725 /* Set up the search paths before we go looking for config files. */
3727 /* These come before the md prefixes so that we will find gcc's subcommands
3728 (such as cpp) rather than those of the host system. */
3729 /* Use 2 as fourth arg meaning try just the machine as a suffix,
3730 as well as trying the machine and the version. */
3732 add_prefix (&exec_prefixes, standard_exec_prefix, "GCC",
3733 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3734 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3735 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3736 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS",
3737 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3740 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3741 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3742 add_prefix (&startfile_prefixes, standard_exec_prefix_1, "BINUTILS",
3743 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3745 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3746 dir_separator_str, NULL);
3748 /* If tooldir is relative, base it on exec_prefixes. A relative
3749 tooldir lets us move the installed tree as a unit.
3751 If GCC_EXEC_PREFIX is defined, then we want to add two relative
3752 directories, so that we can search both the user specified directory
3753 and the standard place. */
3755 if (!IS_ABSOLUTE_PATH (tooldir_prefix))
3757 if (gcc_exec_prefix)
3759 char *gcc_exec_tooldir_prefix
3760 = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
3761 spec_version, dir_separator_str, tooldir_prefix, NULL);
3763 add_prefix (&exec_prefixes,
3764 concat (gcc_exec_tooldir_prefix, "bin",
3765 dir_separator_str, NULL),
3766 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 0);
3767 add_prefix (&startfile_prefixes,
3768 concat (gcc_exec_tooldir_prefix, "lib",
3769 dir_separator_str, NULL),
3770 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
3773 tooldir_prefix = concat (standard_exec_prefix, spec_machine,
3774 dir_separator_str, spec_version,
3775 dir_separator_str, tooldir_prefix, NULL);
3778 add_prefix (&exec_prefixes,
3779 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3780 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 0);
3781 add_prefix (&startfile_prefixes,
3782 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3783 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
3785 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
3786 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
3787 then consider it to relocate with the rest of the GCC installation
3788 if GCC_EXEC_PREFIX is set.
3789 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
3790 if (target_system_root && gcc_exec_prefix)
3792 char *tmp_prefix = make_relative_prefix (argv[0],
3793 standard_bindir_prefix,
3794 target_system_root);
3795 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
3797 target_system_root = tmp_prefix;
3798 target_system_root_changed = 1;
3803 /* More prefixes are enabled in main, after we read the specs file
3804 and determine whether this is cross-compilation or not. */
3806 /* Then create the space for the vectors and scan again. */
3808 switches = xmalloc ((n_switches + 1) * sizeof (struct switchstr));
3809 infiles = xmalloc ((n_infiles + 1) * sizeof (struct infile));
3812 last_language_n_infiles = -1;
3814 /* This, time, copy the text of each switch and store a pointer
3815 to the copy in the vector of switches.
3816 Store all the infiles in their vector. */
3818 for (i = 1; i < argc; i++)
3820 /* Just skip the switches that were handled by the preceding loop. */
3821 #ifdef MODIFY_TARGET_NAME
3822 is_modify_target_name = 0;
3824 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3825 if (! strcmp (argv[i], modify_target[j].sw))
3826 is_modify_target_name = 1;
3828 if (is_modify_target_name)
3832 if (! strncmp (argv[i], "-Wa,", 4))
3834 else if (! strncmp (argv[i], "-Wp,", 4))
3836 else if (! strcmp (argv[i], "-pass-exit-codes"))
3838 else if (! strcmp (argv[i], "-print-search-dirs"))
3840 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3842 else if (! strncmp (argv[i], "-print-file-name=", 17))
3844 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3846 else if (! strcmp (argv[i], "-print-multi-lib"))
3848 else if (! strcmp (argv[i], "-print-multi-directory"))
3850 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3852 else if (! strcmp (argv[i], "-ftarget-help"))
3854 else if (! strcmp (argv[i], "-fhelp"))
3856 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3858 /* Compensate for the +e options to the C++ front-end;
3859 they're there simply for cfront call-compatibility. We do
3860 some magic in default_compilers to pass them down properly.
3861 Note we deliberately start at the `+' here, to avoid passing
3862 -e0 or -e1 down into the linker. */
3863 switches[n_switches].part1 = &argv[i][0];
3864 switches[n_switches].args = 0;
3865 switches[n_switches].live_cond = SWITCH_OK;
3866 switches[n_switches].validated = 0;
3869 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3872 /* Split the argument at commas. */
3874 for (j = 4; argv[i][j]; j++)
3875 if (argv[i][j] == ',')
3877 infiles[n_infiles].language = "*";
3878 infiles[n_infiles++].name
3879 = save_string (argv[i] + prev, j - prev);
3882 /* Record the part after the last comma. */
3883 infiles[n_infiles].language = "*";
3884 infiles[n_infiles++].name = argv[i] + prev;
3886 else if (strcmp (argv[i], "-Xlinker") == 0)
3888 infiles[n_infiles].language = "*";
3889 infiles[n_infiles++].name = argv[++i];
3891 else if (strcmp (argv[i], "-Xassembler") == 0)
3893 infiles[n_infiles].language = "*";
3894 infiles[n_infiles++].name = argv[++i];
3896 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3898 infiles[n_infiles].language = "*";
3899 infiles[n_infiles++].name = argv[++i];
3901 else if (strcmp (argv[i], "-l") == 0)
3902 { /* POSIX allows separation of -l and the lib arg;
3903 canonicalize by concatenating -l with its arg */
3904 infiles[n_infiles].language = "*";
3905 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL);
3907 else if (strncmp (argv[i], "-l", 2) == 0)
3909 infiles[n_infiles].language = "*";
3910 infiles[n_infiles++].name = argv[i];
3912 else if (strcmp (argv[i], "-specs") == 0)
3914 else if (strncmp (argv[i], "-specs=", 7) == 0)
3916 else if (strcmp (argv[i], "-time") == 0)
3918 else if (strcmp (argv[i], "-###") == 0)
3920 else if (argv[i][0] == '-' && argv[i][1] != 0)
3922 const char *p = &argv[i][1];
3927 if (p[1] == 0 && i + 1 == argc)
3928 fatal ("argument to `-x' is missing");
3930 spec_lang = argv[++i];
3933 if (! strcmp (spec_lang, "none"))
3934 /* Suppress the warning if -xnone comes after the last input
3935 file, because alternate command interfaces like g++ might
3936 find it useful to place -xnone after each input file. */
3939 last_language_n_infiles = n_infiles;
3942 switches[n_switches].part1 = p;
3943 /* Deal with option arguments in separate argv elements. */
3944 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
3945 || WORD_SWITCH_TAKES_ARG (p))
3948 int n_args = WORD_SWITCH_TAKES_ARG (p);
3952 /* Count only the option arguments in separate argv elements. */
3953 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
3955 if (i + n_args >= argc)
3956 fatal ("argument to `-%s' is missing", p);
3957 switches[n_switches].args
3958 = xmalloc ((n_args + 1) * sizeof(const char *));
3960 switches[n_switches].args[j++] = argv[++i];
3961 /* Null-terminate the vector. */
3962 switches[n_switches].args[j] = 0;
3964 else if (strchr (switches_need_spaces, c))
3966 /* On some systems, ld cannot handle some options without
3967 a space. So split the option from its argument. */
3968 char *part1 = xmalloc (2);
3972 switches[n_switches].part1 = part1;
3973 switches[n_switches].args = xmalloc (2 * sizeof (const char *));
3974 switches[n_switches].args[0] = xstrdup (p+1);
3975 switches[n_switches].args[1] = 0;
3978 switches[n_switches].args = 0;
3980 switches[n_switches].live_cond = SWITCH_OK;
3981 switches[n_switches].validated = 0;
3982 switches[n_switches].ordering = 0;
3983 /* These are always valid, since gcc.c itself understands them. */
3984 if (!strcmp (p, "save-temps")
3985 || !strcmp (p, "static-libgcc")
3986 || !strcmp (p, "shared-libgcc")
3987 || !strcmp (p, "pipe"))
3988 switches[n_switches].validated = 1;
3991 char ch = switches[n_switches].part1[0];
3993 switches[n_switches].validated = 1;
3999 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4000 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
4003 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
4005 perror_with_name (argv[i]);
4010 infiles[n_infiles].language = spec_lang;
4011 infiles[n_infiles++].name = argv[i];
4016 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4017 error ("warning: `-x %s' after last input file has no effect", spec_lang);
4019 /* Ensure we only invoke each subprocess once. */
4020 if (target_help_flag || print_help_list)
4024 /* Create a dummy input file, so that we can pass --target-help on to
4025 the various sub-processes. */
4026 infiles[0].language = "c";
4027 infiles[0].name = "help-dummy";
4029 if (target_help_flag)
4031 switches[n_switches].part1 = "--target-help";
4032 switches[n_switches].args = 0;
4033 switches[n_switches].live_cond = SWITCH_OK;
4034 switches[n_switches].validated = 0;
4039 if (print_help_list)
4041 switches[n_switches].part1 = "--help";
4042 switches[n_switches].args = 0;
4043 switches[n_switches].live_cond = SWITCH_OK;
4044 switches[n_switches].validated = 0;
4050 switches[n_switches].part1 = 0;
4051 infiles[n_infiles].name = 0;
4054 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4055 and place that in the environment. */
4058 set_collect_gcc_options (void)
4063 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4065 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4066 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4069 for (i = 0; (int) i < n_switches; i++)
4071 const char *const *args;
4074 obstack_grow (&collect_obstack, " ", 1);
4078 /* Ignore elided switches. */
4079 if (switches[i].live_cond == SWITCH_IGNORE)
4082 obstack_grow (&collect_obstack, "'-", 2);
4083 q = switches[i].part1;
4084 while ((p = strchr (q, '\'')))
4086 obstack_grow (&collect_obstack, q, p - q);
4087 obstack_grow (&collect_obstack, "'\\''", 4);
4090 obstack_grow (&collect_obstack, q, strlen (q));
4091 obstack_grow (&collect_obstack, "'", 1);
4093 for (args = switches[i].args; args && *args; args++)
4095 obstack_grow (&collect_obstack, " '", 2);
4097 while ((p = strchr (q, '\'')))
4099 obstack_grow (&collect_obstack, q, p - q);
4100 obstack_grow (&collect_obstack, "'\\''", 4);
4103 obstack_grow (&collect_obstack, q, strlen (q));
4104 obstack_grow (&collect_obstack, "'", 1);
4107 obstack_grow (&collect_obstack, "\0", 1);
4108 putenv (obstack_finish (&collect_obstack));
4111 /* Process a spec string, accumulating and running commands. */
4113 /* These variables describe the input file name.
4114 input_file_number is the index on outfiles of this file,
4115 so that the output file name can be stored for later use by %o.
4116 input_basename is the start of the part of the input file
4117 sans all directory names, and basename_length is the number
4118 of characters starting there excluding the suffix .c or whatever. */
4120 static const char *input_filename;
4121 static int input_file_number;
4122 size_t input_filename_length;
4123 static int basename_length;
4124 static int suffixed_basename_length;
4125 static const char *input_basename;
4126 static const char *input_suffix;
4127 static struct stat input_stat;
4128 static int input_stat_set;
4130 /* The compiler used to process the current input file. */
4131 static struct compiler *input_file_compiler;
4133 /* These are variables used within do_spec and do_spec_1. */
4135 /* Nonzero if an arg has been started and not yet terminated
4136 (with space, tab or newline). */
4137 static int arg_going;
4139 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4140 is a temporary file name. */
4141 static int delete_this_arg;
4143 /* Nonzero means %w has been seen; the next arg to be terminated
4144 is the output file name of this compilation. */
4145 static int this_is_output_file;
4147 /* Nonzero means %s has been seen; the next arg to be terminated
4148 is the name of a library file and we should try the standard
4149 search dirs for it. */
4150 static int this_is_library_file;
4152 /* Nonzero means that the input of this command is coming from a pipe. */
4153 static int input_from_pipe;
4155 /* Nonnull means substitute this for any suffix when outputting a switches
4157 static const char *suffix_subst;
4159 /* Process the spec SPEC and run the commands specified therein.
4160 Returns 0 if the spec is successfully processed; -1 if failed. */
4163 do_spec (const char *spec)
4167 value = do_spec_2 (spec);
4169 /* Force out any unfinished command.
4170 If -pipe, this forces out the last command if it ended in `|'. */
4173 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4176 set_collect_gcc_options ();
4178 if (argbuf_index > 0)
4186 do_spec_2 (const char *spec)
4193 delete_this_arg = 0;
4194 this_is_output_file = 0;
4195 this_is_library_file = 0;
4196 input_from_pipe = 0;
4197 suffix_subst = NULL;
4199 result = do_spec_1 (spec, 0, NULL);
4201 /* End any pending argument. */
4204 obstack_1grow (&obstack, 0);
4205 string = obstack_finish (&obstack);
4206 if (this_is_library_file)
4207 string = find_file (string);
4208 store_arg (string, delete_this_arg, this_is_output_file);
4209 if (this_is_output_file)
4210 outfiles[input_file_number] = string;
4218 /* Process the given spec string and add any new options to the end
4219 of the switches/n_switches array. */
4222 do_option_spec (const char *name, const char *spec)
4224 unsigned int i, value_count, value_len;
4225 const char *p, *q, *value;
4226 char *tmp_spec, *tmp_spec_p;
4228 if (configure_default_options[0].name == NULL)
4231 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4232 if (strcmp (configure_default_options[i].name, name) == 0)
4234 if (i == ARRAY_SIZE (configure_default_options))
4237 value = configure_default_options[i].value;
4238 value_len = strlen (value);
4240 /* Compute the size of the final spec. */
4243 while ((p = strstr (p, "%(VALUE)")) != NULL)
4249 /* Replace each %(VALUE) by the specified value. */
4250 tmp_spec = alloca (strlen (spec) + 1
4251 + value_count * (value_len - strlen ("%(VALUE)")));
4252 tmp_spec_p = tmp_spec;
4254 while ((p = strstr (q, "%(VALUE)")) != NULL)
4256 memcpy (tmp_spec_p, q, p - q);
4257 tmp_spec_p = tmp_spec_p + (p - q);
4258 memcpy (tmp_spec_p, value, value_len);
4259 tmp_spec_p += value_len;
4260 q = p + strlen ("%(VALUE)");
4262 strcpy (tmp_spec_p, q);
4264 do_self_spec (tmp_spec);
4267 /* Process the given spec string and add any new options to the end
4268 of the switches/n_switches array. */
4271 do_self_spec (const char *spec)
4274 do_spec_1 (" ", 0, NULL);
4276 if (argbuf_index > 0)
4281 n_switches += argbuf_index;
4282 switches = xrealloc (switches,
4283 sizeof (struct switchstr) * (n_switches + 1));
4285 switches[n_switches] = switches[first];
4286 for (i = 0; i < argbuf_index; i++)
4288 struct switchstr *sw;
4290 /* Each switch should start with '-'. */
4291 if (argbuf[i][0] != '-')
4294 sw = &switches[i + first];
4295 sw->part1 = &argbuf[i][1];
4297 sw->live_cond = SWITCH_OK;
4304 /* Process the sub-spec SPEC as a portion of a larger spec.
4305 This is like processing a whole spec except that we do
4306 not initialize at the beginning and we do not supply a
4307 newline by default at the end.
4308 INSWITCH nonzero means don't process %-sequences in SPEC;
4309 in this case, % is treated as an ordinary character.
4310 This is used while substituting switches.
4311 INSWITCH nonzero also causes SPC not to terminate an argument.
4313 Value is zero unless a line was finished
4314 and the command on that line reported an error. */
4317 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4319 const char *p = spec;
4326 /* If substituting a switch, treat all chars like letters.
4327 Otherwise, NL, SPC, TAB and % are special. */
4328 switch (inswitch ? 'a' : c)
4331 /* End of line: finish any pending argument,
4332 then run the pending command if one has been started. */
4335 obstack_1grow (&obstack, 0);
4336 string = obstack_finish (&obstack);
4337 if (this_is_library_file)
4338 string = find_file (string);
4339 store_arg (string, delete_this_arg, this_is_output_file);
4340 if (this_is_output_file)
4341 outfiles[input_file_number] = string;
4345 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4347 /* A `|' before the newline means use a pipe here,
4348 but only if -pipe was specified.
4349 Otherwise, execute now and don't pass the `|' as an arg. */
4352 input_from_pipe = 1;
4359 set_collect_gcc_options ();
4361 if (argbuf_index > 0)
4367 /* Reinitialize for a new command, and for a new argument. */
4370 delete_this_arg = 0;
4371 this_is_output_file = 0;
4372 this_is_library_file = 0;
4373 input_from_pipe = 0;
4377 /* End any pending argument. */
4380 obstack_1grow (&obstack, 0);
4381 string = obstack_finish (&obstack);
4382 if (this_is_library_file)
4383 string = find_file (string);
4384 store_arg (string, delete_this_arg, this_is_output_file);
4385 if (this_is_output_file)
4386 outfiles[input_file_number] = string;
4390 obstack_1grow (&obstack, c);
4396 /* Space or tab ends an argument if one is pending. */
4399 obstack_1grow (&obstack, 0);
4400 string = obstack_finish (&obstack);
4401 if (this_is_library_file)
4402 string = find_file (string);
4403 store_arg (string, delete_this_arg, this_is_output_file);
4404 if (this_is_output_file)
4405 outfiles[input_file_number] = string;
4407 /* Reinitialize for a new argument. */
4409 delete_this_arg = 0;
4410 this_is_output_file = 0;
4411 this_is_library_file = 0;
4418 fatal ("invalid specification! Bug in cc");
4421 obstack_grow (&obstack, input_basename, basename_length);
4426 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4431 delete_this_arg = 2;
4434 /* Dump out the directories specified with LIBRARY_PATH,
4435 followed by the absolute directories
4436 that we search for startfiles. */
4439 struct prefix_list *pl = startfile_prefixes.plist;
4440 size_t bufsize = 100;
4441 char *buffer = xmalloc (bufsize);
4444 for (; pl; pl = pl->next)
4446 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4447 /* Used on systems which record the specified -L dirs
4448 and use them to search for dynamic linking. */
4449 /* Relative directories always come from -B,
4450 and it is better not to use them for searching
4451 at run time. In particular, stage1 loses. */
4452 if (!IS_ABSOLUTE_PATH (pl->prefix))
4455 /* Try subdirectory if there is one. */
4456 if (multilib_dir != NULL
4457 || (pl->os_multilib && multilib_os_dir != NULL))
4459 const char *multi_dir;
4461 multi_dir = pl->os_multilib ? multilib_os_dir
4463 if (machine_suffix && multilib_dir)
4465 if (strlen (pl->prefix) + strlen (machine_suffix)
4467 bufsize = (strlen (pl->prefix)
4468 + strlen (machine_suffix)) * 2 + 1;
4469 buffer = xrealloc (buffer, bufsize);
4470 strcpy (buffer, pl->prefix);
4471 strcat (buffer, machine_suffix);
4472 if (is_directory (buffer, multilib_dir, 1))
4474 do_spec_1 ("-L", 0, NULL);
4475 #ifdef SPACE_AFTER_L_OPTION
4476 do_spec_1 (" ", 0, NULL);
4478 do_spec_1 (buffer, 1, NULL);
4479 do_spec_1 (multilib_dir, 1, NULL);
4480 /* Make this a separate argument. */
4481 do_spec_1 (" ", 0, NULL);
4484 if (!pl->require_machine_suffix)
4486 if (is_directory (pl->prefix, multi_dir, 1))
4488 do_spec_1 ("-L", 0, NULL);
4489 #ifdef SPACE_AFTER_L_OPTION
4490 do_spec_1 (" ", 0, NULL);
4492 do_spec_1 (pl->prefix, 1, NULL);
4493 do_spec_1 (multi_dir, 1, NULL);
4494 /* Make this a separate argument. */
4495 do_spec_1 (" ", 0, NULL);
4501 if (is_directory (pl->prefix, machine_suffix, 1))
4503 do_spec_1 ("-L", 0, NULL);
4504 #ifdef SPACE_AFTER_L_OPTION
4505 do_spec_1 (" ", 0, NULL);
4507 do_spec_1 (pl->prefix, 1, NULL);
4508 /* Remove slash from machine_suffix. */
4509 if (strlen (machine_suffix) >= bufsize)
4510 bufsize = strlen (machine_suffix) * 2 + 1;
4511 buffer = xrealloc (buffer, bufsize);
4512 strcpy (buffer, machine_suffix);
4513 idx = strlen (buffer);
4514 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4515 buffer[idx - 1] = 0;
4516 do_spec_1 (buffer, 1, NULL);
4517 /* Make this a separate argument. */
4518 do_spec_1 (" ", 0, NULL);
4521 if (!pl->require_machine_suffix)
4523 if (is_directory (pl->prefix, "", 1))
4525 do_spec_1 ("-L", 0, NULL);
4526 #ifdef SPACE_AFTER_L_OPTION
4527 do_spec_1 (" ", 0, NULL);
4529 /* Remove slash from pl->prefix. */
4530 if (strlen (pl->prefix) >= bufsize)
4531 bufsize = strlen (pl->prefix) * 2 + 1;
4532 buffer = xrealloc (buffer, bufsize);
4533 strcpy (buffer, pl->prefix);
4534 idx = strlen (buffer);
4535 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4536 buffer[idx - 1] = 0;
4537 do_spec_1 (buffer, 1, NULL);
4538 /* Make this a separate argument. */
4539 do_spec_1 (" ", 0, NULL);
4548 /* %efoo means report an error with `foo' as error message
4549 and don't execute any more commands for this file. */
4553 while (*p != 0 && *p != '\n')
4555 buf = alloca (p - q + 1);
4556 strncpy (buf, q, p - q);
4563 /* %nfoo means report a notice with `foo' on stderr. */
4567 while (*p != 0 && *p != '\n')
4569 buf = alloca (p - q + 1);
4570 strncpy (buf, q, p - q);
4572 notice ("%s\n", buf);
4582 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4583 defined, and it is not a directory, and it is
4584 writable, use it. Otherwise, treat this like any
4585 other temporary file. */
4587 if ((!save_temps_flag)
4588 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4589 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4591 obstack_grow (&obstack, HOST_BIT_BUCKET,
4592 strlen (HOST_BIT_BUCKET));
4593 delete_this_arg = 0;
4598 goto create_temp_file;
4602 obstack_1grow (&obstack, '-');
4603 delete_this_arg = 0;
4606 /* consume suffix */
4607 while (*p == '.' || ISALPHA ((unsigned char) *p))
4609 if (p[0] == '%' && p[1] == 'O')
4614 goto create_temp_file;
4618 /* consume suffix */
4619 while (*p == '.' || ISALPHA ((unsigned char) *p))
4621 if (p[0] == '%' && p[1] == 'O')
4626 goto create_temp_file;
4632 struct temp_name *t;
4634 const char *suffix = p;
4635 char *saved_suffix = NULL;
4637 while (*p == '.' || ISALPHA ((unsigned char) *p))
4639 suffix_length = p - suffix;
4640 if (p[0] == '%' && p[1] == 'O')
4643 /* We don't support extra suffix characters after %O. */
4644 if (*p == '.' || ISALPHA ((unsigned char) *p))
4646 if (suffix_length == 0)
4647 suffix = TARGET_OBJECT_SUFFIX;
4651 = xmalloc (suffix_length
4652 + strlen (TARGET_OBJECT_SUFFIX));
4653 strncpy (saved_suffix, suffix, suffix_length);
4654 strcpy (saved_suffix + suffix_length,
4655 TARGET_OBJECT_SUFFIX);
4657 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4660 /* If the input_filename has the same suffix specified
4661 for the %g, %u, or %U, and -save-temps is specified,
4662 we could end up using that file as an intermediate
4663 thus clobbering the user's source file (.e.g.,
4664 gcc -save-temps foo.s would clobber foo.s with the
4665 output of cpp0). So check for this condition and
4666 generate a temp file as the intermediate. */
4668 if (save_temps_flag)
4670 temp_filename_length = basename_length + suffix_length;
4671 temp_filename = alloca (temp_filename_length + 1);
4672 strncpy ((char *) temp_filename, input_basename, basename_length);
4673 strncpy ((char *) temp_filename + basename_length, suffix,
4675 *((char *) temp_filename + temp_filename_length) = '\0';
4676 if (strcmp (temp_filename, input_filename) != 0)
4678 struct stat st_temp;
4680 /* Note, set_input() resets input_stat_set to 0. */
4681 if (input_stat_set == 0)
4683 input_stat_set = stat (input_filename, &input_stat);
4684 if (input_stat_set >= 0)
4688 /* If we have the stat for the input_filename
4689 and we can do the stat for the temp_filename
4690 then the they could still refer to the same
4691 file if st_dev/st_ino's are the same. */
4693 if (input_stat_set != 1
4694 || stat (temp_filename, &st_temp) < 0
4695 || input_stat.st_dev != st_temp.st_dev
4696 || input_stat.st_ino != st_temp.st_ino)
4698 temp_filename = save_string (temp_filename,
4699 temp_filename_length + 1);
4700 obstack_grow (&obstack, temp_filename,
4701 temp_filename_length);
4703 delete_this_arg = 0;
4709 /* See if we already have an association of %g/%u/%U and
4711 for (t = temp_names; t; t = t->next)
4712 if (t->length == suffix_length
4713 && strncmp (t->suffix, suffix, suffix_length) == 0
4714 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
4717 /* Make a new association if needed. %u and %j
4719 if (t == 0 || c == 'u' || c == 'j')
4723 t = xmalloc (sizeof (struct temp_name));
4724 t->next = temp_names;
4727 t->length = suffix_length;
4730 t->suffix = saved_suffix;
4731 saved_suffix = NULL;
4734 t->suffix = save_string (suffix, suffix_length);
4735 t->unique = (c == 'u' || c == 'U' || c == 'j');
4736 temp_filename = make_temp_file (t->suffix);
4737 temp_filename_length = strlen (temp_filename);
4738 t->filename = temp_filename;
4739 t->filename_length = temp_filename_length;
4743 free (saved_suffix);
4745 obstack_grow (&obstack, t->filename, t->filename_length);
4746 delete_this_arg = 1;
4754 for (i = 0; (int) i < n_infiles; i++)
4755 store_arg (infiles[i].name, 0, 0);
4759 obstack_grow (&obstack, input_filename, input_filename_length);
4766 struct prefix_list *pl = include_prefixes.plist;
4768 if (gcc_exec_prefix)
4770 do_spec_1 ("-iprefix", 1, NULL);
4771 /* Make this a separate argument. */
4772 do_spec_1 (" ", 0, NULL);
4773 do_spec_1 (gcc_exec_prefix, 1, NULL);
4774 do_spec_1 (" ", 0, NULL);
4777 if (target_system_root_changed ||
4778 (target_system_root && target_sysroot_hdrs_suffix))
4780 do_spec_1 ("-isysroot", 1, NULL);
4781 /* Make this a separate argument. */
4782 do_spec_1 (" ", 0, NULL);
4783 do_spec_1 (target_system_root, 1, NULL);
4784 if (target_sysroot_hdrs_suffix)
4785 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
4786 do_spec_1 (" ", 0, NULL);
4789 for (; pl; pl = pl->next)
4791 do_spec_1 ("-isystem", 1, NULL);
4792 /* Make this a separate argument. */
4793 do_spec_1 (" ", 0, NULL);
4794 do_spec_1 (pl->prefix, 1, NULL);
4795 do_spec_1 (" ", 0, NULL);
4802 int max = n_infiles;
4803 max += lang_specific_extra_outfiles;
4805 for (i = 0; i < max; i++)
4807 store_arg (outfiles[i], 0, 0);
4812 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4817 this_is_library_file = 1;
4821 outfiles[input_file_number] = NULL;
4825 this_is_output_file = 1;
4830 int cur_index = argbuf_index;
4831 /* Handle the {...} following the %W. */
4834 p = handle_braces (p + 1);
4837 /* End any pending argument. */
4840 obstack_1grow (&obstack, 0);
4841 string = obstack_finish (&obstack);
4842 if (this_is_library_file)
4843 string = find_file (string);
4844 store_arg (string, delete_this_arg, this_is_output_file);
4845 if (this_is_output_file)
4846 outfiles[input_file_number] = string;
4849 /* If any args were output, mark the last one for deletion
4851 if (argbuf_index != cur_index)
4852 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
4856 /* %x{OPTION} records OPTION for %X to output. */
4862 /* Skip past the option value and make a copy. */
4867 string = save_string (p1 + 1, p - p1 - 2);
4869 /* See if we already recorded this option. */
4870 for (i = 0; i < n_linker_options; i++)
4871 if (! strcmp (string, linker_options[i]))
4877 /* This option is new; add it. */
4878 add_linker_option (string, strlen (string));
4882 /* Dump out the options accumulated previously using %x. */
4884 for (i = 0; i < n_linker_options; i++)
4886 do_spec_1 (linker_options[i], 1, NULL);
4887 /* Make each accumulated option a separate argument. */
4888 do_spec_1 (" ", 0, NULL);
4892 /* Dump out the options accumulated previously using -Wa,. */
4894 for (i = 0; i < n_assembler_options; i++)
4896 do_spec_1 (assembler_options[i], 1, NULL);
4897 /* Make each accumulated option a separate argument. */
4898 do_spec_1 (" ", 0, NULL);
4902 /* Dump out the options accumulated previously using -Wp,. */
4904 for (i = 0; i < n_preprocessor_options; i++)
4906 do_spec_1 (preprocessor_options[i], 1, NULL);
4907 /* Make each accumulated option a separate argument. */
4908 do_spec_1 (" ", 0, NULL);
4912 /* Here are digits and numbers that just process
4913 a certain constant string as a spec. */
4916 value = do_spec_1 (cc1_spec, 0, NULL);
4922 value = do_spec_1 (cc1plus_spec, 0, NULL);
4928 value = do_spec_1 (asm_spec, 0, NULL);
4934 value = do_spec_1 (asm_final_spec, 0, NULL);
4941 const char *const spec
4942 = (input_file_compiler->cpp_spec
4943 ? input_file_compiler->cpp_spec
4945 value = do_spec_1 (spec, 0, NULL);
4952 value = do_spec_1 (endfile_spec, 0, NULL);
4958 value = do_spec_1 (link_spec, 0, NULL);
4964 value = do_spec_1 (lib_spec, 0, NULL);
4970 value = do_spec_1 (libgcc_spec, 0, NULL);
4976 if (multilib_dir && strcmp (multilib_dir, ".") != 0)
4982 len = strlen (multilib_dir);
4983 obstack_blank (&obstack, len + 1);
4984 p = obstack_next_free (&obstack) - (len + 1);
4987 for (q = multilib_dir; *q ; ++q, ++p)
4988 *p = (IS_DIR_SEPARATOR (*q) ? '_' : *q);
4993 /* We assume there is a directory
4994 separator at the end of this string. */
4995 if (target_system_root)
4997 obstack_grow (&obstack, target_system_root,
4998 strlen (target_system_root));
4999 if (target_sysroot_suffix)
5000 obstack_grow (&obstack, target_sysroot_suffix,
5001 strlen (target_sysroot_suffix));
5006 value = do_spec_1 (startfile_spec, 0, NULL);
5011 /* Here we define characters other than letters and digits. */
5014 p = handle_braces (p);
5020 p = handle_spec_function (p);
5026 obstack_1grow (&obstack, '%');
5033 while (p[len] && p[len] != ' ' && p[len] != '%')
5035 suffix_subst = save_string (p - 1, len + 1);
5040 /* Henceforth ignore the option(s) matching the pattern
5045 int have_wildcard = 0;
5048 while (p[len] && p[len] != ' ' && p[len] != '\t')
5051 if (p[len-1] == '*')
5054 for (i = 0; i < n_switches; i++)
5055 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5056 && (have_wildcard || switches[i].part1[len] == '\0'))
5058 switches[i].live_cond = SWITCH_IGNORE;
5059 switches[i].validated = 1;
5067 if (soft_matched_part)
5069 do_spec_1 (soft_matched_part, 1, NULL);
5070 do_spec_1 (" ", 0, NULL);
5073 /* Catch the case where a spec string contains something like
5074 '%{foo:%*}'. ie there is no * in the pattern on the left
5075 hand side of the :. */
5076 error ("spec failure: '%%*' has not been initialized by pattern match");
5079 /* Process a string found as the value of a spec given by name.
5080 This feature allows individual machine descriptions
5081 to add and use their own specs.
5082 %[...] modifies -D options the way %P does;
5083 %(...) uses the spec unmodified. */
5085 error ("warning: use of obsolete %%[ operator in specs");
5088 const char *name = p;
5089 struct spec_list *sl;
5092 /* The string after the S/P is the name of a spec that is to be
5094 while (*p && *p != ')' && *p != ']')
5097 /* See if it's in the list. */
5098 for (len = p - name, sl = specs; sl; sl = sl->next)
5099 if (sl->name_len == len && !strncmp (sl->name, name, len))
5101 name = *(sl->ptr_spec);
5103 notice ("Processing spec %c%s%c, which is '%s'\n",
5104 c, sl->name, (c == '(') ? ')' : ']', name);
5113 value = do_spec_1 (name, 0, NULL);
5119 char *x = alloca (strlen (name) * 2 + 1);
5121 const char *y = name;
5124 /* Copy all of NAME into BUF, but put __ after
5125 every -D and at the end of each arg. */
5128 if (! strncmp (y, "-D", 2))
5139 && (*y == ' ' || *y == '\t' || *y == '='
5140 || *y == '}' || *y == 0))
5153 value = do_spec_1 (buf, 0, NULL);
5159 /* Discard the closing paren or bracket. */
5166 error ("spec failure: unrecognized spec option '%c'", c);
5172 /* Backslash: treat next character as ordinary. */
5177 /* Ordinary character: put it into the current argument. */
5178 obstack_1grow (&obstack, c);
5182 /* End of string. If we are processing a spec function, we need to
5183 end any pending argument. */
5184 if (processing_spec_function && arg_going)
5186 obstack_1grow (&obstack, 0);
5187 string = obstack_finish (&obstack);
5188 if (this_is_library_file)
5189 string = find_file (string);
5190 store_arg (string, delete_this_arg, this_is_output_file);
5191 if (this_is_output_file)
5192 outfiles[input_file_number] = string;
5199 /* Look up a spec function. */
5201 static const struct spec_function *
5202 lookup_spec_function (const char *name)
5204 static const struct spec_function * const spec_function_tables[] =
5206 static_spec_functions,
5207 lang_specific_spec_functions,
5209 const struct spec_function *sf;
5212 for (i = 0; i < ARRAY_SIZE (spec_function_tables); i++)
5214 for (sf = spec_function_tables[i]; sf->name != NULL; sf++)
5215 if (strcmp (sf->name, name) == 0)
5222 /* Evaluate a spec function. */
5225 eval_spec_function (const char *func, const char *args)
5227 const struct spec_function *sf;
5228 const char *funcval;
5230 /* Saved spec processing context. */
5231 int save_argbuf_index;
5232 int save_argbuf_length;
5233 const char **save_argbuf;
5236 int save_delete_this_arg;
5237 int save_this_is_output_file;
5238 int save_this_is_library_file;
5239 int save_input_from_pipe;
5240 const char *save_suffix_subst;
5243 sf = lookup_spec_function (func);
5245 fatal ("unknown spec function `%s'", func);
5247 /* Push the spec processing context. */
5248 save_argbuf_index = argbuf_index;
5249 save_argbuf_length = argbuf_length;
5250 save_argbuf = argbuf;
5252 save_arg_going = arg_going;
5253 save_delete_this_arg = delete_this_arg;
5254 save_this_is_output_file = this_is_output_file;
5255 save_this_is_library_file = this_is_library_file;
5256 save_input_from_pipe = input_from_pipe;
5257 save_suffix_subst = suffix_subst;
5259 /* Create a new spec processing context, and build the function
5263 if (do_spec_2 (args) < 0)
5264 fatal ("error in args to spec function `%s'", func);
5266 /* argbuf_index is an index for the next argument to be inserted, and
5267 so contains the count of the args already inserted. */
5269 funcval = (*sf->func) (argbuf_index, argbuf);
5271 /* Pop the spec processing context. */
5272 argbuf_index = save_argbuf_index;
5273 argbuf_length = save_argbuf_length;
5275 argbuf = save_argbuf;
5277 arg_going = save_arg_going;
5278 delete_this_arg = save_delete_this_arg;
5279 this_is_output_file = save_this_is_output_file;
5280 this_is_library_file = save_this_is_library_file;
5281 input_from_pipe = save_input_from_pipe;
5282 suffix_subst = save_suffix_subst;
5287 /* Handle a spec function call of the form:
5291 ARGS is processed as a spec in a separate context and split into an
5292 argument vector in the normal fashion. The function returns a string
5293 containing a spec which we then process in the caller's context, or
5294 NULL if no processing is required. */
5297 handle_spec_function (const char *p)
5300 const char *endp, *funcval;
5303 processing_spec_function++;
5305 /* Get the function name. */
5306 for (endp = p; *endp != '\0'; endp++)
5308 if (*endp == '(') /* ) */
5310 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5311 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5312 fatal ("malformed spec function name");
5314 if (*endp != '(') /* ) */
5315 fatal ("no arguments for spec function");
5316 func = save_string (p, endp - p);
5319 /* Get the arguments. */
5320 for (count = 0; *endp != '\0'; endp++)
5329 else if (*endp == '(') /* ) */
5334 fatal ("malformed spec function arguments");
5335 args = save_string (p, endp - p);
5338 /* p now points to just past the end of the spec function expression. */
5340 funcval = eval_spec_function (func, args);
5341 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5347 processing_spec_function--;
5352 /* Inline subroutine of handle_braces. Returns true if the current
5353 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5355 input_suffix_matches (const char *atom, const char *end_atom)
5357 return (input_suffix
5358 && !strncmp (input_suffix, atom, end_atom - atom)
5359 && input_suffix[end_atom - atom] == '\0');
5362 /* Inline subroutine of handle_braces. Returns true if a switch
5363 matching the atom bracketed by ATOM and END_ATOM appeared on the
5366 switch_matches (const char *atom, const char *end_atom, int starred)
5369 int len = end_atom - atom;
5370 int plen = starred ? len : -1;
5372 for (i = 0; i < n_switches; i++)
5373 if (!strncmp (switches[i].part1, atom, len)
5374 && (starred || switches[i].part1[len] == '\0')
5375 && check_live_switch (i, plen))
5381 /* Inline subroutine of handle_braces. Mark all of the switches which
5382 match ATOM (extends to END_ATOM; STARRED indicates whether there
5383 was a star after the atom) for later processing. */
5385 mark_matching_switches (const char *atom, const char *end_atom, int starred)
5388 int len = end_atom - atom;
5389 int plen = starred ? len : -1;
5391 for (i = 0; i < n_switches; i++)
5392 if (!strncmp (switches[i].part1, atom, len)
5393 && (starred || switches[i].part1[len] == '\0')
5394 && check_live_switch (i, plen))
5395 switches[i].ordering = 1;
5398 /* Inline subroutine of handle_braces. Process all the currently
5399 marked switches through give_switch, and clear the marks. */
5401 process_marked_switches (void)
5405 for (i = 0; i < n_switches; i++)
5406 if (switches[i].ordering == 1)
5408 switches[i].ordering = 0;
5413 /* Handle a %{ ... } construct. P points just inside the leading {.
5414 Returns a pointer one past the end of the brace block, or 0
5415 if we call do_spec_1 and that returns -1. */
5418 handle_braces (const char *p)
5420 const char *atom, *end_atom;
5421 const char *d_atom = NULL, *d_end_atom = NULL;
5428 bool a_must_be_last = false;
5429 bool ordered_set = false;
5430 bool disjunct_set = false;
5431 bool disj_matched = false;
5432 bool disj_starred = true;
5433 bool n_way_choice = false;
5434 bool n_way_matched = false;
5436 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5443 /* Scan one "atom" (S in the description above of %{}, possibly
5444 with !, ., or * modifiers). */
5445 a_matched = a_is_suffix = a_is_starred = a_is_negated = false;
5449 p++, a_is_negated = true;
5453 p++, a_is_suffix = true;
5456 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5457 || *p == ',' || *p == '.' || *p == '@')
5462 p++, a_is_starred = 1;
5465 if (*p == '&' || *p == '}')
5467 /* Substitute the switch(es) indicated by the current atom. */
5469 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5470 || atom == end_atom)
5473 mark_matching_switches (atom, end_atom, a_is_starred);
5476 process_marked_switches ();
5478 else if (*p == '|' || *p == ':')
5480 /* Substitute some text if the current atom appears as a switch
5482 disjunct_set = true;
5486 if (atom == end_atom)
5488 if (!n_way_choice || disj_matched || *p == '|'
5489 || a_is_negated || a_is_suffix || a_is_starred)
5492 /* An empty term may appear as the last choice of an
5493 N-way choice set; it means "otherwise". */
5494 a_must_be_last = true;
5495 disj_matched = !n_way_matched;
5496 disj_starred = false;
5500 if (a_is_suffix && a_is_starred)
5504 disj_starred = false;
5506 /* Don't bother testing this atom if we already have a
5508 if (!disj_matched && !n_way_matched)
5511 a_matched = input_suffix_matches (atom, end_atom);
5513 a_matched = switch_matches (atom, end_atom, a_is_starred);
5515 if (a_matched != a_is_negated)
5517 disj_matched = true;
5519 d_end_atom = end_atom;
5526 /* Found the body, that is, the text to substitute if the
5527 current disjunction matches. */
5528 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5529 disj_matched && !n_way_matched);
5533 /* If we have an N-way choice, reset state for the next
5537 n_way_choice = true;
5538 n_way_matched |= disj_matched;
5539 disj_matched = false;
5540 disj_starred = true;
5541 d_atom = d_end_atom = NULL;
5548 while (*p++ != '}');
5555 /* Subroutine of handle_braces. Scan and process a brace substitution body
5556 (X in the description of %{} syntax). P points one past the colon;
5557 ATOM and END_ATOM bracket the first atom which was found to be true
5558 (present) in the current disjunction; STARRED indicates whether all
5559 the atoms in the current disjunction were starred (for syntax validation);
5560 MATCHED indicates whether the disjunction matched or not, and therefore
5561 whether or not the body is to be processed through do_spec_1 or just
5562 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5566 process_brace_body (const char *p, const char *atom, const char *end_atom,
5567 int starred, int matched)
5569 const char *body, *end_body;
5570 unsigned int nesting_level;
5571 bool have_subst = false;
5573 /* Locate the closing } or ;, honoring nested braces.
5574 Trim trailing whitespace. */
5583 if (!--nesting_level)
5586 else if (*p == ';' && nesting_level == 1)
5588 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
5590 else if (*p == '\0')
5596 while (end_body[-1] == ' ' || end_body[-1] == '\t')
5599 if (have_subst && !starred)
5604 /* Copy the substitution body to permanent storage and execute it.
5605 If have_subst is false, this is a simple matter of running the
5606 body through do_spec_1... */
5607 char *string = save_string (body, end_body - body);
5610 if (do_spec_1 (string, 0, NULL) < 0)
5615 /* ... but if have_subst is true, we have to process the
5616 body once for each matching switch, with %* set to the
5617 variant part of the switch. */
5618 unsigned int hard_match_len = end_atom - atom;
5621 for (i = 0; i < n_switches; i++)
5622 if (!strncmp (switches[i].part1, atom, hard_match_len)
5623 && check_live_switch (i, hard_match_len))
5625 if (do_spec_1 (string, 0,
5626 &switches[i].part1[hard_match_len]) < 0)
5628 /* Pass any arguments this switch has. */
5630 suffix_subst = NULL;
5638 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5639 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5640 spec, or -1 if either exact match or %* is used.
5642 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5643 whose value does not begin with "no-" is obsoleted by the same value
5644 with the "no-", similarly for a switch with the "no-" prefix. */
5647 check_live_switch (int switchnum, int prefix_length)
5649 const char *name = switches[switchnum].part1;
5652 /* In the common case of {<at-most-one-letter>*}, a negating
5653 switch would always match, so ignore that case. We will just
5654 send the conflicting switches to the compiler phase. */
5655 if (prefix_length >= 0 && prefix_length <= 1)
5658 /* If we already processed this switch and determined if it was
5659 live or not, return our past determination. */
5660 if (switches[switchnum].live_cond != 0)
5661 return switches[switchnum].live_cond > 0;
5663 /* Now search for duplicate in a manner that depends on the name. */
5667 for (i = switchnum + 1; i < n_switches; i++)
5668 if (switches[i].part1[0] == 'O')
5670 switches[switchnum].validated = 1;
5671 switches[switchnum].live_cond = SWITCH_FALSE;
5676 case 'W': case 'f': case 'm':
5677 if (! strncmp (name + 1, "no-", 3))
5679 /* We have Xno-YYY, search for XYYY. */
5680 for (i = switchnum + 1; i < n_switches; i++)
5681 if (switches[i].part1[0] == name[0]
5682 && ! strcmp (&switches[i].part1[1], &name[4]))
5684 switches[switchnum].validated = 1;
5685 switches[switchnum].live_cond = SWITCH_FALSE;
5691 /* We have XYYY, search for Xno-YYY. */
5692 for (i = switchnum + 1; i < n_switches; i++)
5693 if (switches[i].part1[0] == name[0]
5694 && switches[i].part1[1] == 'n'
5695 && switches[i].part1[2] == 'o'
5696 && switches[i].part1[3] == '-'
5697 && !strcmp (&switches[i].part1[4], &name[1]))
5699 switches[switchnum].validated = 1;
5700 switches[switchnum].live_cond = SWITCH_FALSE;
5707 /* Otherwise the switch is live. */
5708 switches[switchnum].live_cond = SWITCH_LIVE;
5712 /* Pass a switch to the current accumulating command
5713 in the same form that we received it.
5714 SWITCHNUM identifies the switch; it is an index into
5715 the vector of switches gcc received, which is `switches'.
5716 This cannot fail since it never finishes a command line.
5718 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5721 give_switch (int switchnum, int omit_first_word)
5723 if (switches[switchnum].live_cond == SWITCH_IGNORE)
5726 if (!omit_first_word)
5728 do_spec_1 ("-", 0, NULL);
5729 do_spec_1 (switches[switchnum].part1, 1, NULL);
5732 if (switches[switchnum].args != 0)
5735 for (p = switches[switchnum].args; *p; p++)
5737 const char *arg = *p;
5739 do_spec_1 (" ", 0, NULL);
5742 unsigned length = strlen (arg);
5745 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5746 if (arg[length] == '.')
5748 ((char *)arg)[length] = 0;
5752 do_spec_1 (arg, 1, NULL);
5754 ((char *)arg)[length] = '.';
5755 do_spec_1 (suffix_subst, 1, NULL);
5758 do_spec_1 (arg, 1, NULL);
5762 do_spec_1 (" ", 0, NULL);
5763 switches[switchnum].validated = 1;
5766 /* Search for a file named NAME trying various prefixes including the
5767 user's -B prefix and some standard ones.
5768 Return the absolute file name found. If nothing is found, return NAME. */
5771 find_file (const char *name)
5775 /* Try multilib_dir if it is defined. */
5776 if (multilib_os_dir != NULL)
5778 newname = find_a_file (&startfile_prefixes, name, R_OK, 1);
5780 /* If we don't find it in the multi library dir, then fall
5781 through and look for it in the normal places. */
5782 if (newname != NULL)
5786 newname = find_a_file (&startfile_prefixes, name, R_OK, 0);
5787 return newname ? newname : name;
5790 /* Determine whether a directory exists. If LINKER, return 0 for
5791 certain fixed names not needed by the linker. If not LINKER, it is
5792 only important to return 0 if the host machine has a small ARG_MAX
5796 is_directory (const char *path1, const char *path2, int linker)
5798 int len1 = strlen (path1);
5799 int len2 = strlen (path2);
5800 char *path = alloca (3 + len1 + len2);
5804 #ifndef SMALL_ARG_MAX
5809 /* Construct the path from the two parts. Ensure the string ends with "/.".
5810 The resulting path will be a directory even if the given path is a
5812 memcpy (path, path1, len1);
5813 memcpy (path + len1, path2, len2);
5814 cp = path + len1 + len2;
5815 if (!IS_DIR_SEPARATOR (cp[-1]))
5816 *cp++ = DIR_SEPARATOR;
5820 /* Exclude directories that the linker is known to search. */
5823 && strcmp (path, concat (dir_separator_str, "lib",
5824 dir_separator_str, ".", NULL)) == 0)
5826 && strcmp (path, concat (dir_separator_str, "usr",
5827 dir_separator_str, "lib",
5828 dir_separator_str, ".", NULL)) == 0)))
5831 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5834 /* Set up the various global variables to indicate that we're processing
5835 the input file named FILENAME. */
5838 set_input (const char *filename)
5842 input_filename = filename;
5843 input_filename_length = strlen (input_filename);
5845 input_basename = input_filename;
5846 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
5847 /* Skip drive name so 'x:foo' is handled properly. */
5848 if (input_basename[1] == ':')
5849 input_basename += 2;
5851 for (p = input_basename; *p; p++)
5852 if (IS_DIR_SEPARATOR (*p))
5853 input_basename = p + 1;
5855 /* Find a suffix starting with the last period,
5856 and set basename_length to exclude that suffix. */
5857 basename_length = strlen (input_basename);
5858 suffixed_basename_length = basename_length;
5859 p = input_basename + basename_length;
5860 while (p != input_basename && *p != '.')
5862 if (*p == '.' && p != input_basename)
5864 basename_length = p - input_basename;
5865 input_suffix = p + 1;
5870 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5871 we will need to do a stat on the input_filename. The
5872 INPUT_STAT_SET signals that the stat is needed. */
5876 /* On fatal signals, delete all the temporary files. */
5879 fatal_error (int signum)
5881 signal (signum, SIG_DFL);
5882 delete_failure_queue ();
5883 delete_temp_files ();
5884 /* Get the same signal again, this time not handled,
5885 so its normal effect occurs. */
5886 kill (getpid (), signum);
5889 extern int main (int, const char *const *);
5892 main (int argc, const char *const *argv)
5896 int linker_was_run = 0;
5897 int num_linker_inputs = 0;
5898 char *explicit_link_files;
5901 struct user_specs *uptr;
5903 p = argv[0] + strlen (argv[0]);
5904 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
5908 xmalloc_set_program_name (programname);
5910 #ifdef GCC_DRIVER_HOST_INITIALIZATION
5911 /* Perform host dependent initialization when needed. */
5912 GCC_DRIVER_HOST_INITIALIZATION;
5915 gcc_init_libintl ();
5917 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
5918 signal (SIGINT, fatal_error);
5920 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
5921 signal (SIGHUP, fatal_error);
5923 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
5924 signal (SIGTERM, fatal_error);
5926 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
5927 signal (SIGPIPE, fatal_error);
5930 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
5931 receive the signal. A different setting is inheritable */
5932 signal (SIGCHLD, SIG_DFL);
5935 /* Allocate the argument vector. */
5938 obstack_init (&obstack);
5940 /* Build multilib_select, et. al from the separate lines that make up each
5941 multilib selection. */
5943 const char *const *q = multilib_raw;
5946 obstack_init (&multilib_obstack);
5947 while ((p = *q++) != (char *) 0)
5948 obstack_grow (&multilib_obstack, p, strlen (p));
5950 obstack_1grow (&multilib_obstack, 0);
5951 multilib_select = obstack_finish (&multilib_obstack);
5953 q = multilib_matches_raw;
5954 while ((p = *q++) != (char *) 0)
5955 obstack_grow (&multilib_obstack, p, strlen (p));
5957 obstack_1grow (&multilib_obstack, 0);
5958 multilib_matches = obstack_finish (&multilib_obstack);
5960 q = multilib_exclusions_raw;
5961 while ((p = *q++) != (char *) 0)
5962 obstack_grow (&multilib_obstack, p, strlen (p));
5964 obstack_1grow (&multilib_obstack, 0);
5965 multilib_exclusions = obstack_finish (&multilib_obstack);
5968 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
5971 obstack_1grow (&multilib_obstack, ' ');
5972 obstack_grow (&multilib_obstack,
5973 multilib_defaults_raw[i],
5974 strlen (multilib_defaults_raw[i]));
5978 obstack_1grow (&multilib_obstack, 0);
5979 multilib_defaults = obstack_finish (&multilib_obstack);
5982 /* Set up to remember the pathname of gcc and any options
5983 needed for collect. We use argv[0] instead of programname because
5984 we need the complete pathname. */
5985 obstack_init (&collect_obstack);
5986 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
5987 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
5988 putenv (obstack_finish (&collect_obstack));
5990 #ifdef INIT_ENVIRONMENT
5991 /* Set up any other necessary machine specific environment variables. */
5992 putenv (INIT_ENVIRONMENT);
5995 /* Make a table of what switches there are (switches, n_switches).
5996 Make a table of specified input files (infiles, n_infiles).
5997 Decode switches that are handled locally. */
5999 process_command (argc, argv);
6001 /* Initialize the vector of specs to just the default.
6002 This means one element containing 0s, as a terminator. */
6004 compilers = xmalloc (sizeof default_compilers);
6005 memcpy (compilers, default_compilers, sizeof default_compilers);
6006 n_compilers = n_default_compilers;
6008 /* Read specs from a file if there is one. */
6010 machine_suffix = concat (spec_machine, dir_separator_str,
6011 spec_version, dir_separator_str, NULL);
6012 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6014 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, 0);
6015 /* Read the specs file unless it is a default one. */
6016 if (specs_file != 0 && strcmp (specs_file, "specs"))
6017 read_specs (specs_file, TRUE);
6021 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6022 for any override of as, ld and libraries. */
6023 specs_file = alloca (strlen (standard_exec_prefix)
6024 + strlen (just_machine_suffix) + sizeof ("specs"));
6026 strcpy (specs_file, standard_exec_prefix);
6027 strcat (specs_file, just_machine_suffix);
6028 strcat (specs_file, "specs");
6029 if (access (specs_file, R_OK) == 0)
6030 read_specs (specs_file, TRUE);
6032 /* Process any configure-time defaults specified for the command line
6033 options, via OPTION_DEFAULT_SPECS. */
6034 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6035 do_option_spec (option_default_specs[i].name,
6036 option_default_specs[i].spec);
6038 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6039 of the command line. */
6041 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6042 do_self_spec (driver_self_specs[i]);
6044 /* If not cross-compiling, look for executables in the standard
6046 if (*cross_compile == '0')
6048 if (*md_exec_prefix)
6050 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6051 PREFIX_PRIORITY_LAST, 0, NULL, 0);
6055 /* Process sysroot_suffix_spec. */
6056 if (*sysroot_suffix_spec != 0
6057 && do_spec_2 (sysroot_suffix_spec) == 0)
6059 if (argbuf_index > 1)
6060 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC.");
6061 else if (argbuf_index == 1)
6062 target_sysroot_suffix = xstrdup (argbuf[argbuf_index -1]);
6065 /* Process sysroot_hdrs_suffix_spec. */
6066 if (*sysroot_hdrs_suffix_spec != 0
6067 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6069 if (argbuf_index > 1)
6070 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC.");
6071 else if (argbuf_index == 1)
6072 target_sysroot_hdrs_suffix = xstrdup (argbuf[argbuf_index -1]);
6075 /* Look for startfiles in the standard places. */
6076 if (*startfile_prefix_spec != 0
6077 && do_spec_2 (startfile_prefix_spec) == 0
6078 && do_spec_1 (" ", 0, NULL) == 0)
6081 for (ndx = 0; ndx < argbuf_index; ndx++)
6082 add_sysrooted_prefix (&startfile_prefixes, argbuf[ndx], "BINUTILS",
6083 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6085 /* We should eventually get rid of all these and stick to
6086 startfile_prefix_spec exclusively. */
6087 else if (*cross_compile == '0' || target_system_root)
6089 if (*md_exec_prefix)
6090 add_sysrooted_prefix (&startfile_prefixes, md_exec_prefix, "GCC",
6091 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6093 if (*md_startfile_prefix)
6094 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6095 "GCC", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6097 if (*md_startfile_prefix_1)
6098 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6099 "GCC", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6101 /* If standard_startfile_prefix is relative, base it on
6102 standard_exec_prefix. This lets us move the installed tree
6103 as a unit. If GCC_EXEC_PREFIX is defined, base
6104 standard_startfile_prefix on that as well. */
6105 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
6106 add_sysrooted_prefix (&startfile_prefixes,
6107 standard_startfile_prefix, "BINUTILS",
6108 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6111 if (gcc_exec_prefix)
6112 add_prefix (&startfile_prefixes,
6113 concat (gcc_exec_prefix, machine_suffix,
6114 standard_startfile_prefix, NULL),
6115 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
6116 add_prefix (&startfile_prefixes,
6117 concat (standard_exec_prefix,
6119 standard_startfile_prefix, NULL),
6120 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
6123 add_sysrooted_prefix (&startfile_prefixes, standard_startfile_prefix_1,
6124 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6125 add_sysrooted_prefix (&startfile_prefixes, standard_startfile_prefix_2,
6126 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6127 #if 0 /* Can cause surprises, and one can use -B./ instead. */
6128 add_prefix (&startfile_prefixes, "./", NULL,
6129 PREFIX_PRIORITY_LAST, 1, NULL, 0);
6133 /* Process any user specified specs in the order given on the command
6135 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6137 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6139 read_specs (filename ? filename : uptr->filename, FALSE);
6142 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6143 if (gcc_exec_prefix)
6144 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6145 spec_version, dir_separator_str, NULL);
6147 /* Now we have the specs.
6148 Set the `valid' bits for switches that match anything in any spec. */
6150 validate_all_switches ();
6152 /* Now that we have the switches and the specs, set
6153 the subdirectory based on the options. */
6154 set_multilib_dir ();
6156 /* Warn about any switches that no pass was interested in. */
6158 for (i = 0; (int) i < n_switches; i++)
6159 if (! switches[i].validated)
6160 error ("unrecognized option `-%s'", switches[i].part1);
6162 /* Obey some of the options. */
6164 if (print_search_dirs)
6166 printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix);
6167 printf (_("programs: %s\n"), build_search_list (&exec_prefixes, "", 0));
6168 printf (_("libraries: %s\n"), build_search_list (&startfile_prefixes, "", 0));
6172 if (print_file_name)
6174 printf ("%s\n", find_file (print_file_name));
6178 if (print_prog_name)
6180 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6181 printf ("%s\n", (newname ? newname : print_prog_name));
6185 if (print_multi_lib)
6187 print_multilib_info ();
6191 if (print_multi_directory)
6193 if (multilib_dir == NULL)
6196 printf ("%s\n", multilib_dir);
6200 if (print_multi_os_directory)
6202 if (multilib_os_dir == NULL)
6205 printf ("%s\n", multilib_os_dir);
6209 if (target_help_flag)
6211 /* Print if any target specific options. */
6213 /* We do not exit here. Instead we have created a fake input file
6214 called 'target-dummy' which needs to be compiled, and we pass this
6215 on to the various sub-processes, along with the --target-help
6219 if (print_help_list)
6225 printf (_("\nFor bug reporting instructions, please see:\n"));
6226 printf ("%s.\n", bug_report_url);
6231 /* We do not exit here. Instead we have created a fake input file
6232 called 'help-dummy' which needs to be compiled, and we pass this
6233 on the various sub-processes, along with the --help switch. */
6241 notice ("Configured with: %s\n", configuration_arguments);
6243 #ifdef THREAD_MODEL_SPEC
6244 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6245 but there's no point in doing all this processing just to get
6246 thread_model back. */
6247 obstack_init (&obstack);
6248 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6249 obstack_1grow (&obstack, '\0');
6250 thrmod = obstack_finish (&obstack);
6252 thrmod = thread_model;
6255 notice ("Thread model: %s\n", thrmod);
6257 /* compiler_version is truncated at the first space when initialized
6258 from version string, so truncate version_string at the first space
6259 before comparing. */
6260 for (n = 0; version_string[n]; n++)
6261 if (version_string[n] == ' ')
6264 if (! strncmp (version_string, compiler_version, n)
6265 && compiler_version[n] == 0)
6266 notice ("gcc version %s\n", version_string);
6268 notice ("gcc driver version %s executing gcc version %s\n",
6269 version_string, compiler_version);
6275 if (n_infiles == added_libraries)
6276 fatal ("no input files");
6278 /* Make a place to record the compiler output file names
6279 that correspond to the input files. */
6282 i += lang_specific_extra_outfiles;
6283 outfiles = xcalloc (i, sizeof (char *));
6285 /* Record which files were specified explicitly as link input. */
6287 explicit_link_files = xcalloc (1, n_infiles);
6291 int lang_n_infiles = 0;
6292 for (i = 0; (int) i < n_infiles; i++)
6294 const char *name = infiles[i].name;
6295 struct compiler *compiler
6296 = lookup_compiler (name, strlen (name), infiles[i].language);
6297 if (compiler == NULL)
6298 error ("%s: linker input file unused because linking not done",
6300 else if (lang_n_infiles > 0 && compiler != input_file_compiler)
6301 fatal ("cannot specify -o with -c or -S and multiple languages");
6305 input_file_compiler = compiler;
6310 for (i = 0; (int) i < (combine_inputs ? 1 : n_infiles); i++)
6312 int this_file_error = 0;
6314 /* Tell do_spec what to substitute for %i. */
6316 input_file_number = i;
6317 set_input (infiles[i].name);
6319 /* Use the same thing in %o, unless cp->spec says otherwise. */
6321 outfiles[i] = input_filename;
6323 /* Figure out which compiler from the file's suffix. */
6325 if (! combine_inputs)
6327 = lookup_compiler (infiles[i].name, input_filename_length,
6328 infiles[i].language);
6330 if (input_file_compiler)
6332 /* Ok, we found an applicable compiler. Run its spec. */
6334 if (input_file_compiler->spec[0] == '#')
6336 error ("%s: %s compiler not installed on this system",
6337 input_filename, &input_file_compiler->spec[1]);
6338 this_file_error = 1;
6342 value = do_spec (input_file_compiler->spec);
6344 this_file_error = 1;
6348 /* If this file's name does not contain a recognized suffix,
6349 record it as explicit linker input. */
6352 explicit_link_files[i] = 1;
6354 /* Clear the delete-on-failure queue, deleting the files in it
6355 if this compilation failed. */
6357 if (this_file_error)
6359 delete_failure_queue ();
6362 /* If this compilation succeeded, don't delete those files later. */
6363 clear_failure_queue ();
6366 /* Reset the output file name to the first input file name, for use
6367 with %b in LINK_SPEC on a target that prefers not to emit a.out
6370 set_input (infiles[0].name);
6372 if (error_count == 0)
6374 /* Make sure INPUT_FILE_NUMBER points to first available open
6376 input_file_number = n_infiles;
6377 if (lang_specific_pre_link ())
6381 /* Determine if there are any linker input files. */
6382 num_linker_inputs = 0;
6383 for (i = 0; (int) i < n_infiles; i++)
6384 if (explicit_link_files[i] || outfiles[i] != NULL)
6385 num_linker_inputs++;
6387 /* Run ld to link all the compiler output files. */
6389 if (num_linker_inputs > 0 && error_count == 0)
6391 int tmp = execution_count;
6393 /* We'll use ld if we can't find collect2. */
6394 if (! strcmp (linker_name_spec, "collect2"))
6396 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, 0);
6398 linker_name_spec = "ld";
6400 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6402 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH");
6403 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV);
6405 value = do_spec (link_command_spec);
6408 linker_was_run = (tmp != execution_count);
6411 /* If options said don't run linker,
6412 complain about input files to be given to the linker. */
6414 if (! linker_was_run && error_count == 0)
6415 for (i = 0; (int) i < n_infiles; i++)
6416 if (explicit_link_files[i])
6417 error ("%s: linker input file unused because linking not done",
6420 /* Delete some or all of the temporary files we made. */
6423 delete_failure_queue ();
6424 delete_temp_files ();
6426 if (print_help_list)
6428 printf (("\nFor bug reporting instructions, please see:\n"));
6429 printf ("%s\n", bug_report_url);
6432 return (signal_count != 0 ? 2
6433 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
6437 /* Find the proper compilation spec for the file name NAME,
6438 whose length is LENGTH. LANGUAGE is the specified language,
6439 or 0 if this file is to be passed to the linker. */
6441 static struct compiler *
6442 lookup_compiler (const char *name, size_t length, const char *language)
6444 struct compiler *cp;
6446 /* If this was specified by the user to be a linker input, indicate that. */
6447 if (language != 0 && language[0] == '*')
6450 /* Otherwise, look for the language, if one is spec'd. */
6453 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6454 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6457 error ("language %s not recognized", language);
6461 /* Look for a suffix. */
6462 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6464 if (/* The suffix `-' matches only the file name `-'. */
6465 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6466 || (strlen (cp->suffix) < length
6467 /* See if the suffix matches the end of NAME. */
6468 && !strcmp (cp->suffix,
6469 name + length - strlen (cp->suffix))
6474 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6475 /* look again, but case-insensitively this time. */
6477 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6479 if (/* The suffix `-' matches only the file name `-'. */
6480 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6481 || (strlen (cp->suffix) < length
6482 /* See if the suffix matches the end of NAME. */
6483 && ((!strcmp (cp->suffix,
6484 name + length - strlen (cp->suffix))
6485 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6486 && !strcasecmp (cp->suffix,
6487 name + length - strlen (cp->suffix)))
6493 if (cp >= compilers)
6495 if (cp->spec[0] != '@')
6496 /* A non-alias entry: return it. */
6499 /* An alias entry maps a suffix to a language.
6500 Search for the language; pass 0 for NAME and LENGTH
6501 to avoid infinite recursion if language not found. */
6502 return lookup_compiler (NULL, 0, cp->spec + 1);
6508 save_string (const char *s, int len)
6510 char *result = xmalloc (len + 1);
6512 memcpy (result, s, len);
6518 pfatal_with_name (const char *name)
6520 perror_with_name (name);
6521 delete_temp_files ();
6526 perror_with_name (const char *name)
6528 error ("%s: %s", name, xstrerror (errno));
6532 pfatal_pexecute (const char *errmsg_fmt, const char *errmsg_arg)
6536 int save_errno = errno;
6538 /* Space for trailing '\0' is in %s. */
6539 char *msg = xmalloc (strlen (errmsg_fmt) + strlen (errmsg_arg));
6540 sprintf (msg, errmsg_fmt, errmsg_arg);
6546 pfatal_with_name (errmsg_fmt);
6549 /* Output an error message and exit. */
6554 fatal ("internal gcc abort");
6557 /* Output an error message and exit. */
6560 fatal (const char *msgid, ...)
6564 va_start (ap, msgid);
6566 fprintf (stderr, "%s: ", programname);
6567 vfprintf (stderr, _(msgid), ap);
6569 fprintf (stderr, "\n");
6570 delete_temp_files ();
6575 error (const char *msgid, ...)
6579 va_start (ap, msgid);
6580 fprintf (stderr, "%s: ", programname);
6581 vfprintf (stderr, _(msgid), ap);
6584 fprintf (stderr, "\n");
6588 notice (const char *msgid, ...)
6592 va_start (ap, msgid);
6593 vfprintf (stderr, _(msgid), ap);
6598 validate_switches_from_spec (const char *spec)
6600 const char *p = spec;
6603 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
6604 /* We have a switch spec. */
6605 p = validate_switches (p + 1);
6609 validate_all_switches (void)
6611 struct compiler *comp;
6612 struct spec_list *spec;
6614 for (comp = compilers; comp->spec; comp++)
6615 validate_switches_from_spec (comp->spec);
6617 /* Look through the linked list of specs read from the specs file. */
6618 for (spec = specs; spec; spec = spec->next)
6619 validate_switches_from_spec (*spec->ptr_spec);
6621 validate_switches_from_spec (link_command_spec);
6624 /* Look at the switch-name that comes after START
6625 and mark as valid all supplied switches that match it. */
6628 validate_switches (const char *start)
6630 const char *p = start;
6634 bool suffix = false;
6635 bool starred = false;
6637 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
6650 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
6651 || *p == ',' || *p == '.' || *p == '@')
6656 starred = true, p++;
6662 /* Mark all matching switches as valid. */
6663 for (i = 0; i < n_switches; i++)
6664 if (!strncmp (switches[i].part1, atom, len)
6665 && (starred || switches[i].part1[len] == 0))
6666 switches[i].validated = 1;
6670 if (*p && (p[-1] == '|' || p[-1] == '&'))
6673 if (*p && p[-1] == ':')
6675 while (*p && *p != ';' && *p != '}')
6680 if (*p == '{' || *p == '<')
6681 p = validate_switches (p+1);
6682 else if (p[0] == 'W' && p[1] == '{')
6683 p = validate_switches (p+2);
6690 if (*p && p[-1] == ';')
6704 static struct mdswitchstr *mdswitches;
6705 static int n_mdswitches;
6707 /* Check whether a particular argument was used. The first time we
6708 canonicalize the switches to keep only the ones we care about. */
6711 used_arg (const char *p, int len)
6716 const char *replace;
6721 static struct mswitchstr *mswitches;
6722 static int n_mswitches;
6727 struct mswitchstr *matches;
6731 /* Break multilib_matches into the component strings of string
6732 and replacement string. */
6733 for (q = multilib_matches; *q != '\0'; q++)
6737 matches = alloca ((sizeof (struct mswitchstr)) * cnt);
6739 q = multilib_matches;
6749 matches[i].len = q - matches[i].str;
6751 matches[i].replace = ++q;
6752 while (*q != ';' && *q != '\0')
6758 matches[i].rep_len = q - matches[i].replace;
6764 /* Now build a list of the replacement string for switches that we care
6765 about. Make sure we allocate at least one entry. This prevents
6766 xmalloc from calling fatal, and prevents us from re-executing this
6769 = xmalloc (sizeof (struct mswitchstr)
6770 * (n_mdswitches + (n_switches ? n_switches : 1)));
6771 for (i = 0; i < n_switches; i++)
6773 int xlen = strlen (switches[i].part1);
6774 for (j = 0; j < cnt; j++)
6775 if (xlen == matches[j].len
6776 && ! strncmp (switches[i].part1, matches[j].str, xlen))
6778 mswitches[n_mswitches].str = matches[j].replace;
6779 mswitches[n_mswitches].len = matches[j].rep_len;
6780 mswitches[n_mswitches].replace = (char *) 0;
6781 mswitches[n_mswitches].rep_len = 0;
6787 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
6788 on the command line nor any options mutually incompatible with
6790 for (i = 0; i < n_mdswitches; i++)
6794 for (q = multilib_options; *q != '\0'; q++)
6800 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
6801 || strchr (" /", q[mdswitches[i].len]) == NULL)
6803 while (*q != ' ' && *q != '/' && *q != '\0')
6810 if (*q != ' ' && *q != '\0')
6812 while (*r != ' ' && *r != '\0')
6815 while (*q != ' ' && *q != '/' && *q != '\0')
6818 if (used_arg (r, q - r))
6823 mswitches[n_mswitches].str = mdswitches[i].str;
6824 mswitches[n_mswitches].len = mdswitches[i].len;
6825 mswitches[n_mswitches].replace = (char *) 0;
6826 mswitches[n_mswitches].rep_len = 0;
6839 for (i = 0; i < n_mswitches; i++)
6840 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
6847 default_arg (const char *p, int len)
6851 for (i = 0; i < n_mdswitches; i++)
6852 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
6858 /* Work out the subdirectory to use based on the options. The format of
6859 multilib_select is a list of elements. Each element is a subdirectory
6860 name followed by a list of options followed by a semicolon. The format
6861 of multilib_exclusions is the same, but without the preceding
6862 directory. First gcc will check the exclusions, if none of the options
6863 beginning with an exclamation point are present, and all of the other
6864 options are present, then we will ignore this completely. Passing
6865 that, gcc will consider each multilib_select in turn using the same
6866 rules for matching the options. If a match is found, that subdirectory
6870 set_multilib_dir (void)
6873 unsigned int this_path_len;
6874 const char *this_path, *this_arg;
6875 const char *start, *end;
6877 int ok, ndfltok, first;
6880 start = multilib_defaults;
6881 while (*start == ' ' || *start == '\t')
6883 while (*start != '\0')
6886 while (*start != ' ' && *start != '\t' && *start != '\0')
6888 while (*start == ' ' || *start == '\t')
6896 mdswitches = xmalloc (sizeof (struct mdswitchstr) * n_mdswitches);
6897 for (start = multilib_defaults; *start != '\0'; start = end + 1)
6899 while (*start == ' ' || *start == '\t')
6905 for (end = start + 1;
6906 *end != ' ' && *end != '\t' && *end != '\0'; end++)
6909 obstack_grow (&multilib_obstack, start, end - start);
6910 obstack_1grow (&multilib_obstack, 0);
6911 mdswitches[i].str = obstack_finish (&multilib_obstack);
6912 mdswitches[i++].len = end - start;
6919 p = multilib_exclusions;
6922 /* Ignore newlines. */
6929 /* Check the arguments. */
6943 while (*p != ' ' && *p != ';')
6950 if (*this_arg != '!')
6958 ok = used_arg (this_arg, p - this_arg);
6973 p = multilib_select;
6976 /* Ignore newlines. */
6983 /* Get the initial path. */
6991 this_path_len = p - this_path;
6993 /* Check the arguments. */
7009 while (*p != ' ' && *p != ';')
7016 if (*this_arg != '!')
7024 /* If this is a default argument, we can just ignore it.
7025 This is true even if this_arg begins with '!'. Beginning
7026 with '!' does not mean that this argument is necessarily
7027 inappropriate for this library: it merely means that
7028 there is a more specific library which uses this
7029 argument. If this argument is a default, we need not
7030 consider that more specific library. */
7031 ok = used_arg (this_arg, p - this_arg);
7038 if (default_arg (this_arg, p - this_arg))
7047 if (this_path_len != 1
7048 || this_path[0] != '.')
7050 char *new_multilib_dir = xmalloc (this_path_len + 1);
7053 strncpy (new_multilib_dir, this_path, this_path_len);
7054 new_multilib_dir[this_path_len] = '\0';
7055 q = strchr (new_multilib_dir, ':');
7058 multilib_dir = new_multilib_dir;
7065 const char *q = this_path, *end = this_path + this_path_len;
7067 while (q < end && *q != ':')
7071 char *new_multilib_os_dir = xmalloc (end - q);
7072 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
7073 new_multilib_os_dir[end - q - 1] = '\0';
7074 multilib_os_dir = new_multilib_os_dir;
7082 if (multilib_dir == NULL && multilib_os_dir != NULL
7083 && strcmp (multilib_os_dir, ".") == 0)
7085 free ((char *) multilib_os_dir);
7086 multilib_os_dir = NULL;
7088 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7089 multilib_os_dir = multilib_dir;
7092 /* Print out the multiple library subdirectory selection
7093 information. This prints out a series of lines. Each line looks
7094 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7095 required. Only the desired options are printed out, the negative
7096 matches. The options are print without a leading dash. There are
7097 no spaces to make it easy to use the information in the shell.
7098 Each subdirectory is printed only once. This assumes the ordering
7099 generated by the genmultilib script. Also, we leave out ones that match
7103 print_multilib_info (void)
7105 const char *p = multilib_select;
7106 const char *last_path = 0, *this_path;
7108 unsigned int last_path_len = 0;
7113 /* Ignore newlines. */
7120 /* Get the initial path. */
7129 /* When --disable-multilib was used but target defines
7130 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7131 to find multilib_os_dir, so skip them from output. */
7132 if (this_path[0] == '.' && this_path[1] == ':')
7135 /* Check for matches with the multilib_exclusions. We don't bother
7136 with the '!' in either list. If any of the exclusion rules match
7137 all of its options with the select rule, we skip it. */
7139 const char *e = multilib_exclusions;
7140 const char *this_arg;
7145 /* Ignore newlines. */
7152 /* Check the arguments. */
7169 while (*e != ' ' && *e != ';')
7180 int len = e - this_arg;
7187 while (*q != ' ' && *q != ';')
7194 if (! strncmp (arg, this_arg, (len < q - arg) ? q - arg : len) ||
7195 default_arg (this_arg, e - this_arg))
7225 /* If this is a duplicate, skip it. */
7226 skip = (last_path != 0 && (unsigned int) (p - this_path) == last_path_len
7227 && ! strncmp (last_path, this_path, last_path_len));
7229 last_path = this_path;
7230 last_path_len = p - this_path;
7233 /* If this directory requires any default arguments, we can skip
7234 it. We will already have printed a directory identical to
7235 this one which does not require that default argument. */
7253 while (*q != ' ' && *q != ';')
7261 && default_arg (arg, q - arg))
7276 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7295 use_arg = *p != '!';
7300 while (*p != ' ' && *p != ';')
7315 /* If there are extra options, print them now. */
7316 if (multilib_extra && *multilib_extra)
7318 int print_at = TRUE;
7321 for (q = multilib_extra; *q != '\0'; q++)
7342 /* if-exists built-in spec function.
7344 Checks to see if the file specified by the absolute pathname in
7345 ARGS exists. Returns that pathname if found.
7347 The usual use for this function is to check for a library file
7348 (whose name has been expanded with %s). */
7351 if_exists_spec_function (int argc, const char **argv)
7353 /* Must have only one argument. */
7354 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7360 /* if-exists-else built-in spec function.
7362 This is like if-exists, but takes an additional argument which
7363 is returned if the first argument does not exist. */
7366 if_exists_else_spec_function (int argc, const char **argv)
7368 /* Must have exactly two arguments. */
7372 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))