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, 2004 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"
76 #include "multilib.h" /* before tm.h */
79 #if ! defined( SIGCHLD ) && defined( SIGCLD )
80 # define SIGCHLD SIGCLD
88 #ifdef HAVE_SYS_RESOURCE_H
89 #include <sys/resource.h>
91 #if defined (HAVE_DECL_GETRUSAGE) && !HAVE_DECL_GETRUSAGE
92 extern int getrusage (int, struct rusage *);
95 /* By default there is no special suffix for target executables. */
96 /* FIXME: when autoconf is fixed, remove the host check - dj */
97 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
98 #define HAVE_TARGET_EXECUTABLE_SUFFIX
101 /* By default there is no special suffix for host executables. */
102 #ifdef HOST_EXECUTABLE_SUFFIX
103 #define HAVE_HOST_EXECUTABLE_SUFFIX
105 #define HOST_EXECUTABLE_SUFFIX ""
108 /* By default, the suffix for target object files is ".o". */
109 #ifdef TARGET_OBJECT_SUFFIX
110 #define HAVE_TARGET_OBJECT_SUFFIX
112 #define TARGET_OBJECT_SUFFIX ".o"
115 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
117 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
118 #ifndef LIBRARY_PATH_ENV
119 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
123 #define kill(p,s) raise(s)
126 /* If a stage of compilation returns an exit status >= 1,
127 compilation of that file ceases. */
129 #define MIN_FATAL_STATUS 1
131 /* Flag set by cppspec.c to 1. */
134 /* Flag saying to pass the greatest exit code returned by a sub-process
135 to the calling program. */
136 static int pass_exit_codes;
138 /* Definition of string containing the arguments given to configure. */
139 #include "configargs.h"
141 /* Flag saying to print the directories gcc will search through looking for
142 programs, libraries, etc. */
144 static int print_search_dirs;
146 /* Flag saying to print the full filename of this file
147 as found through our usual search mechanism. */
149 static const char *print_file_name = NULL;
151 /* As print_file_name, but search for executable file. */
153 static const char *print_prog_name = NULL;
155 /* Flag saying to print the relative path we'd use to
156 find libgcc.a given the current compiler flags. */
158 static int print_multi_directory;
160 /* Flag saying to print the relative path we'd use to
161 find OS libraries given the current compiler flags. */
163 static int print_multi_os_directory;
165 /* Flag saying to print the list of subdirectories and
166 compiler flags used to select them in a standard form. */
168 static int print_multi_lib;
170 /* Flag saying to print the command line options understood by gcc and its
173 static int print_help_list;
175 /* Flag indicating whether we should print the command and arguments */
177 static int verbose_flag;
179 /* Flag indicating whether we should ONLY print the command and
180 arguments (like verbose_flag) without executing the command.
181 Displayed arguments are quoted so that the generated command
182 line is suitable for execution. This is intended for use in
183 shell scripts to capture the driver-generated command line. */
184 static int verbose_only_flag;
186 /* Flag indicating to print target specific command line options. */
188 static int target_help_flag;
190 /* Flag indicating whether we should report subprocess execution times
191 (if this is supported by the system - see pexecute.c). */
193 static int report_times;
195 /* Nonzero means place this string before uses of /, so that include
196 and library files can be found in an alternate location. */
198 #ifdef TARGET_SYSTEM_ROOT
199 static const char *target_system_root = TARGET_SYSTEM_ROOT;
201 static const char *target_system_root = 0;
204 /* Nonzero means pass the updated target_system_root to the compiler. */
206 static int target_system_root_changed;
208 /* Nonzero means append this string to target_system_root. */
210 static const char *target_sysroot_suffix = 0;
212 /* Nonzero means append this string to target_system_root for headers. */
214 static const char *target_sysroot_hdrs_suffix = 0;
216 /* Nonzero means write "temp" files in source directory
217 and use the source file's name in them, and don't delete them. */
219 static int save_temps_flag;
221 /* Nonzero means use pipes to communicate between subprocesses.
222 Overridden by either of the above two flags. */
224 static int use_pipes;
226 /* The compiler version. */
228 static const char *compiler_version;
230 /* The target version specified with -V */
232 static const char *const spec_version = DEFAULT_TARGET_VERSION;
234 /* The target machine specified with -b. */
236 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
238 /* Nonzero if cross-compiling.
239 When -b is used, the value comes from the `specs' file. */
242 static const char *cross_compile = "1";
244 static const char *cross_compile = "0";
247 #ifdef MODIFY_TARGET_NAME
249 /* Information on how to alter the target name based on a command-line
250 switch. The only case we support now is simply appending or deleting a
251 string to or from the end of the first part of the configuration name. */
253 static const struct modify_target
255 const char *const sw;
256 const enum add_del {ADD, DELETE} add_del;
257 const char *const str;
259 modify_target[] = MODIFY_TARGET_NAME;
262 /* The number of errors that have occurred; the link phase will not be
263 run if this is nonzero. */
264 static int error_count = 0;
266 /* Greatest exit code of sub-processes that has been encountered up to
268 static int greatest_status = 1;
270 /* This is the obstack which we use to allocate many strings. */
272 static struct obstack obstack;
274 /* This is the obstack to build an environment variable to pass to
275 collect2 that describes all of the relevant switches of what to
276 pass the compiler in building the list of pointers to constructors
279 static struct obstack collect_obstack;
281 /* These structs are used to collect resource usage information for
283 #ifdef HAVE_GETRUSAGE
284 static struct rusage rus, prus;
287 /* Forward declaration for prototypes. */
290 static void init_spec (void);
291 static void store_arg (const char *, int, int);
292 static char *load_specs (const char *);
293 static void read_specs (const char *, int);
294 static void set_spec (const char *, const char *);
295 static struct compiler *lookup_compiler (const char *, size_t, const char *);
296 static char *build_search_list (struct path_prefix *, const char *, int);
297 static void putenv_from_prefixes (struct path_prefix *, const char *);
298 static int access_check (const char *, int);
299 static char *find_a_file (struct path_prefix *, const char *, int, int);
300 static void add_prefix (struct path_prefix *, const char *, const char *,
301 int, int, int *, int);
302 static void add_sysrooted_prefix (struct path_prefix *, const char *,
303 const char *, int, int, int *, int);
304 static void translate_options (int *, const char *const **);
305 static char *skip_whitespace (char *);
306 static void delete_if_ordinary (const char *);
307 static void delete_temp_files (void);
308 static void delete_failure_queue (void);
309 static void clear_failure_queue (void);
310 static int check_live_switch (int, int);
311 static const char *handle_braces (const char *);
312 static inline bool input_suffix_matches (const char *, const char *);
313 static inline bool switch_matches (const char *, const char *, int);
314 static inline void mark_matching_switches (const char *, const char *, int);
315 static inline void process_marked_switches (void);
316 static const char *process_brace_body (const char *, const char *, const char *, int, int);
317 static const struct spec_function *lookup_spec_function (const char *);
318 static const char *eval_spec_function (const char *, const char *);
319 static const char *handle_spec_function (const char *);
320 static char *save_string (const char *, int);
321 static void set_collect_gcc_options (void);
322 static int do_spec_1 (const char *, int, const char *);
323 static int do_spec_2 (const char *);
324 static void do_option_spec (const char *, const char *);
325 static void do_self_spec (const char *);
326 static const char *find_file (const char *);
327 static int is_directory (const char *, const char *, int);
328 static const char *validate_switches (const char *);
329 static void validate_all_switches (void);
330 static inline void validate_switches_from_spec (const char *);
331 static void give_switch (int, int);
332 static int used_arg (const char *, int);
333 static int default_arg (const char *, int);
334 static void set_multilib_dir (void);
335 static void print_multilib_info (void);
336 static void perror_with_name (const char *);
337 static void pfatal_pexecute (const char *, const char *) ATTRIBUTE_NORETURN;
338 static void notice (const char *, ...) ATTRIBUTE_PRINTF_1;
339 static void display_help (void);
340 static void add_preprocessor_option (const char *, int);
341 static void add_assembler_option (const char *, int);
342 static void add_linker_option (const char *, int);
343 static void process_command (int, const char **);
344 static int execute (void);
345 static void alloc_args (void);
346 static void clear_args (void);
347 static void fatal_error (int);
348 #ifdef ENABLE_SHARED_LIBGCC
349 static void init_gcc_specs (struct obstack *, const char *, const char *,
352 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
353 static const char *convert_filename (const char *, int, int);
356 static const char *if_exists_spec_function (int, const char **);
357 static const char *if_exists_else_spec_function (int, const char **);
359 /* The Specs Language
361 Specs are strings containing lines, each of which (if not blank)
362 is made up of a program name, and arguments separated by spaces.
363 The program name must be exact and start from root, since no path
364 is searched and it is unreliable to depend on the current working directory.
365 Redirection of input or output is not supported; the subprograms must
366 accept filenames saying what files to read and write.
368 In addition, the specs can contain %-sequences to substitute variable text
369 or for conditional text. Here is a table of all defined %-sequences.
370 Note that spaces are not generated automatically around the results of
371 expanding these sequences; therefore, you can concatenate them together
372 or with constant text in a single argument.
374 %% substitute one % into the program name or argument.
375 %i substitute the name of the input file being processed.
376 %b substitute the basename of the input file being processed.
377 This is the substring up to (and not including) the last period
378 and not including the directory.
379 %B same as %b, but include the file suffix (text after the last period).
381 substitute a file name that has suffix SUFFIX and is chosen
382 once per compilation, and mark the argument a la %d. To reduce
383 exposure to denial-of-service attacks, the file name is now
384 chosen in a way that is hard to predict even when previously
385 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
386 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
387 the regexp "[.A-Za-z]*%O"; "%O" is treated exactly as if it
388 had been pre-processed. Previously, %g was simply substituted
389 with a file name chosen once per compilation, without regard
390 to any appended suffix (which was therefore treated just like
391 ordinary text), making such attacks more likely to succeed.
393 like %g, but if -pipe is in effect, expands simply to "-".
395 like %g, but if -pipe is in effect, expands to nothing. (We have both
396 %| and %m to accommodate differences between system assemblers; see
397 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
399 like %g, but generates a new temporary file name even if %uSUFFIX
402 substitutes the last file name generated with %uSUFFIX, generating a
403 new one if there is no such last file name. In the absence of any
404 %uSUFFIX, this is just like %gSUFFIX, except they don't share
405 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
406 would involve the generation of two distinct file names, one
407 for each `%g.s' and another for each `%U.s'. Previously, %U was
408 simply substituted with a file name chosen for the previous %u,
409 without regard to any appended suffix.
411 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
412 writable, and if save-temps is off; otherwise, substitute the name
413 of a temporary file, just like %u. This temporary file is not
414 meant for communication between processes, but rather as a junk
417 substitutes .SUFFIX for the suffixes of a matched switch's args when
418 it is subsequently output with %*. SUFFIX is terminated by the next
420 %d marks the argument containing or following the %d as a
421 temporary file name, so that that file will be deleted if CC exits
422 successfully. Unlike %g, this contributes no text to the argument.
423 %w marks the argument containing or following the %w as the
424 "output file" of this compilation. This puts the argument
425 into the sequence of arguments that %o will substitute later.
426 %V indicates that this compilation produces no "output file".
428 like %{...} but mark last argument supplied within
429 as a file to be deleted on failure.
430 %o substitutes the names of all the output files, with spaces
431 automatically placed around them. You should write spaces
432 around the %o as well or the results are undefined.
433 %o is for use in the specs for running the linker.
434 Input files whose names have no recognized suffix are not compiled
435 at all, but they are included among the output files, so they will
437 %O substitutes the suffix for object files. Note that this is
438 handled specially when it immediately follows %g, %u, or %U
439 (with or without a suffix argument) because of the need for
440 those to form complete file names. The handling is such that
441 %O is treated exactly as if it had already been substituted,
442 except that %g, %u, and %U do not currently support additional
443 SUFFIX characters following %O as they would following, for
445 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
446 (made from TARGET_SYSTEM_ROOT), and -isystem (made from COMPILER_PATH
447 and -B options) as necessary.
448 %s current argument is the name of a library or startup file of some sort.
449 Search for that file in a standard list of directories
450 and substitute the full name found.
451 %eSTR Print STR as an error message. STR is terminated by a newline.
452 Use this when inconsistent options are detected.
453 %nSTR Print STR as a notice. STR is terminated by a newline.
454 %x{OPTION} Accumulate an option for %X.
455 %X Output the accumulated linker options specified by compilations.
456 %Y Output the accumulated assembler options specified by compilations.
457 %Z Output the accumulated preprocessor options specified by compilations.
458 %a process ASM_SPEC as a spec.
459 This allows config.h to specify part of the spec for running as.
460 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
461 used here. This can be used to run a post-processor after the
462 assembler has done its job.
463 %D Dump out a -L option for each directory in startfile_prefixes.
464 If multilib_dir is set, extra entries are generated with it affixed.
465 %l process LINK_SPEC as a spec.
466 %L process LIB_SPEC as a spec.
467 %G process LIBGCC_SPEC as a spec.
468 %M output multilib_dir with directory separators replaced with "_";
469 if multilib_dir is not set or is ".", output "".
470 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
471 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
472 %C process CPP_SPEC as a spec.
473 %1 process CC1_SPEC as a spec.
474 %2 process CC1PLUS_SPEC as a spec.
475 %* substitute the variable part of a matched option. (See below.)
476 Note that each comma in the substituted string is replaced by
478 %<S remove all occurrences of -S from the command line.
479 Note - this command is position dependent. % commands in the
480 spec string before this one will see -S, % commands in the
481 spec string after this one will not.
482 %<S* remove all occurrences of all switches beginning with -S from the
485 Call the named function FUNCTION, passing it ARGS. ARGS is
486 first processed as a nested spec string, then split into an
487 argument vector in the usual fashion. The function returns
488 a string which is processed as if it had appeared literally
489 as part of the current spec.
490 %{S} substitutes the -S switch, if that switch was given to CC.
491 If that switch was not specified, this substitutes nothing.
492 Here S is a metasyntactic variable.
493 %{S*} substitutes all the switches specified to CC whose names start
494 with -S. This is used for -o, -I, etc; switches that take
495 arguments. CC considers `-o foo' as being one switch whose
496 name starts with `o'. %{o*} would substitute this text,
497 including the space; thus, two arguments would be generated.
498 %{S*&T*} likewise, but preserve order of S and T options (the order
499 of S and T in the spec is not significant). Can be any number
500 of ampersand-separated variables; for each the wild card is
501 optional. Useful for CPP as %{D*&U*&A*}.
503 %{S:X} substitutes X, if the -S switch was given to CC.
504 %{!S:X} substitutes X, if the -S switch was NOT given to CC.
505 %{S*:X} substitutes X if one or more switches whose names start
506 with -S was given to CC. Normally X is substituted only
507 once, no matter how many such switches appeared. However,
508 if %* appears somewhere in X, then X will be substituted
509 once for each matching switch, with the %* replaced by the
510 part of that switch that matched the '*'.
511 %{.S:X} substitutes X, if processing a file with suffix S.
512 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
514 %{S|T:X} substitutes X if either -S or -T was given to CC. This may be
515 combined with !, ., and * as above binding stronger than the OR.
516 If %* appears in X, all of the alternatives must be starred, and
517 only the first matching alternative is substituted.
518 %{S:X; if S was given to CC, substitutes X;
519 T:Y; else if T was given to CC, substitutes Y;
520 :D} else substitutes D. There can be as many clauses as you need.
521 This may be combined with ., !, |, and * as above.
523 %(Spec) processes a specification defined in a specs file as *Spec:
524 %[Spec] as above, but put __ around -D arguments
526 The conditional text X in a %{S:X} or similar construct may contain
527 other nested % constructs or spaces, or even newlines. They are
528 processed as usual, as described above. Trailing white space in X is
529 ignored. White space may also appear anywhere on the left side of the
530 colon in these constructs, except between . or * and the corresponding
533 The -O, -f, -m, and -W switches are handled specifically in these
534 constructs. If another value of -O or the negated form of a -f, -m, or
535 -W switch is found later in the command line, the earlier switch
536 value is ignored, except with {S*} where S is just one letter; this
537 passes all matching options.
539 The character | at the beginning of the predicate text is used to indicate
540 that a command should be piped to the following command, but only if -pipe
543 Note that it is built into CC which switches take arguments and which
544 do not. You might think it would be useful to generalize this to
545 allow each compiler's spec to say which switches take arguments. But
546 this cannot be done in a consistent fashion. CC cannot even decide
547 which input files have been specified without knowing which switches
548 take arguments, and it must know which input files to compile in order
549 to tell which compilers to run.
551 CC also knows implicitly that arguments starting in `-l' are to be
552 treated as compiler output files, and passed to the linker in their
553 proper position among the other output files. */
555 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
557 /* config.h can define ASM_SPEC to provide extra args to the assembler
558 or extra switch-translations. */
563 /* config.h can define ASM_FINAL_SPEC to run a post processor after
564 the assembler has run. */
565 #ifndef ASM_FINAL_SPEC
566 #define ASM_FINAL_SPEC ""
569 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
570 or extra switch-translations. */
575 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
576 or extra switch-translations. */
581 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
582 or extra switch-translations. */
584 #define CC1PLUS_SPEC ""
587 /* config.h can define LINK_SPEC to provide extra args to the linker
588 or extra switch-translations. */
593 /* config.h can define LIB_SPEC to override the default libraries. */
595 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
598 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
601 #if defined(LINK_LIBGCC_SPECIAL) || defined(LINK_LIBGCC_SPECIAL_1)
602 /* Have gcc do the search for libgcc.a. */
603 #define LIBGCC_SPEC "libgcc.a%s"
605 #define LIBGCC_SPEC "-lgcc"
609 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
610 #ifndef STARTFILE_SPEC
611 #define STARTFILE_SPEC \
612 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
615 /* config.h can define SWITCHES_NEED_SPACES to control which options
616 require spaces between the option and the argument. */
617 #ifndef SWITCHES_NEED_SPACES
618 #define SWITCHES_NEED_SPACES ""
621 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
623 #define ENDFILE_SPEC ""
627 #define LINKER_NAME "collect2"
630 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
632 #ifndef ASM_DEBUG_SPEC
633 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
634 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
635 # define ASM_DEBUG_SPEC \
636 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
637 ? "%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}" \
638 : "%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}")
640 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
641 # define ASM_DEBUG_SPEC "%{g*:--gstabs}"
643 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
644 # define ASM_DEBUG_SPEC "%{g*:--gdwarf2}"
648 #ifndef ASM_DEBUG_SPEC
649 # define ASM_DEBUG_SPEC ""
652 /* Here is the spec for running the linker, after compiling all files. */
654 /* This is overridable by the target in case they need to specify the
655 -lgcc and -lc order specially, yet not require them to override all
656 of LINK_COMMAND_SPEC. */
657 #ifndef LINK_GCC_C_SEQUENCE_SPEC
658 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
661 #ifndef LINK_PIE_SPEC
663 #define LINK_PIE_SPEC "%{pie:-pie} "
665 #define LINK_PIE_SPEC "%{pie:} "
669 /* -u* was put back because both BSD and SysV seem to support it. */
670 /* %{static:} simply prevents an error message if the target machine
671 doesn't handle -static. */
672 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
673 scripts which exist in user specified directories, or in standard
675 #ifndef LINK_COMMAND_SPEC
676 #define LINK_COMMAND_SPEC "\
677 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
678 %(linker) %l " LINK_PIE_SPEC "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\
679 %{s} %{t} %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
680 %{static:} %{L*} %(link_libgcc) %o %{fprofile-arcs|fprofile-generate:-lgcov}\
681 %{!nostdlib:%{!nodefaultlibs:%(link_gcc_c_sequence)}}\
682 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
685 #ifndef LINK_LIBGCC_SPEC
686 # ifdef LINK_LIBGCC_SPECIAL
687 /* Don't generate -L options for startfile prefix list. */
688 # define LINK_LIBGCC_SPEC ""
690 /* Do generate them. */
691 # define LINK_LIBGCC_SPEC "%D"
695 #ifndef STARTFILE_PREFIX_SPEC
696 # define STARTFILE_PREFIX_SPEC ""
699 #ifndef SYSROOT_SUFFIX_SPEC
700 # define SYSROOT_SUFFIX_SPEC ""
703 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
704 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
707 static const char *asm_debug;
708 static const char *cpp_spec = CPP_SPEC;
709 static const char *cc1_spec = CC1_SPEC;
710 static const char *cc1plus_spec = CC1PLUS_SPEC;
711 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
712 static const char *asm_spec = ASM_SPEC;
713 static const char *asm_final_spec = ASM_FINAL_SPEC;
714 static const char *link_spec = LINK_SPEC;
715 static const char *lib_spec = LIB_SPEC;
716 static const char *libgcc_spec = LIBGCC_SPEC;
717 static const char *endfile_spec = ENDFILE_SPEC;
718 static const char *startfile_spec = STARTFILE_SPEC;
719 static const char *switches_need_spaces = SWITCHES_NEED_SPACES;
720 static const char *linker_name_spec = LINKER_NAME;
721 static const char *link_command_spec = LINK_COMMAND_SPEC;
722 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
723 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
724 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
725 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
727 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
728 There should be no need to override these in target dependent files,
729 but we need to copy them to the specs file so that newer versions
730 of the GCC driver can correctly drive older tool chains with the
731 appropriate -B options. */
733 /* When cpplib handles traditional preprocessing, get rid of this, and
734 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
735 that we default the front end language better. */
736 static const char *trad_capable_cpp =
737 "cc1 -E %{traditional|ftraditional|traditional-cpp:-traditional-cpp}";
739 /* We don't wrap .d files in %W{} since a missing .d file, and
740 therefore no dependency entry, confuses make into thinking a .o
741 file that happens to exist is up-to-date. */
742 static const char *cpp_unique_options =
743 "%{C|CC:%{!E:%eGCC does not support -C or -CC without -E}}\
744 %{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*} %{P} %I\
745 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
746 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
747 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
748 %{!E:%{!M:%{!MM:%{MD|MMD:%{o*:-MQ %*}}}}}\
749 %{trigraphs} %{remap} %{g3:-dD} %{H} %C %{D*&U*&A*} %{i*} %Z %i\
752 /* This contains cpp options which are common with cc1_options and are passed
753 only when preprocessing only to avoid duplication. We pass the cc1 spec
754 options to the preprocessor so that it the cc1 spec may manipulate
755 options used to set target flags. Those special target flags settings may
756 in turn cause preprocessor symbols to be defined specially. */
757 static const char *cpp_options =
758 "%(cpp_unique_options) %1 %{m*} %{std*} %{ansi} %{W*&pedantic*} %{w} %{f*}\
759 %{g*:%{!g0:%{!fno-working-directory:-fworking-directory}}} %{O*} %{undef}";
761 /* This contains cpp options which are not passed when the preprocessor
762 output will be used by another program. */
763 static const char *cpp_debug_options = "%{d*}";
765 /* NB: This is shared amongst all front-ends. */
766 static const char *cc1_options =
767 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
768 %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\
769 %{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}%{!c:%{!S:-auxbase %b}}\
770 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*} %{ansi}\
771 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
772 %{Qn:-fno-ident} %{--help:--help}\
773 %{--target-help:--target-help}\
774 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
775 %{fsyntax-only:-o %j} %{-param*}";
777 static const char *asm_options =
778 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
780 static const char *invoke_as =
781 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
782 "%{!S:-o %|.s |\n as %(asm_options) %|.s %A }";
784 "%{!S:-o %|.s |\n as %(asm_options) %m.s %A }";
787 /* Some compilers have limits on line lengths, and the multilib_select
788 and/or multilib_matches strings can be very long, so we build them at
790 static struct obstack multilib_obstack;
791 static const char *multilib_select;
792 static const char *multilib_matches;
793 static const char *multilib_defaults;
794 static const char *multilib_exclusions;
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 {"--time", "-time", 0},
1072 {"--trace-includes", "-H", 0},
1073 {"--traditional", "-traditional", 0},
1074 {"--traditional-cpp", "-traditional-cpp", 0},
1075 {"--trigraphs", "-trigraphs", 0},
1076 {"--undefine-macro", "-U", "aj"},
1077 {"--user-dependencies", "-MM", 0},
1078 {"--verbose", "-v", 0},
1079 {"--warn-", "-W", "*j"},
1080 {"--write-dependencies", "-MD", 0},
1081 {"--write-user-dependencies", "-MMD", 0},
1086 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1087 static const struct {
1088 const char *const option_found;
1089 const char *const replacements;
1090 } target_option_translations[] =
1092 TARGET_OPTION_TRANSLATE_TABLE,
1097 /* Translate the options described by *ARGCP and *ARGVP.
1098 Make a new vector and store it back in *ARGVP,
1099 and store its length in *ARGVC. */
1102 translate_options (int *argcp, const char *const **argvp)
1106 const char *const *argv = *argvp;
1107 int newvsize = (argc + 2) * 2 * sizeof (const char *);
1108 const char **newv = xmalloc (newvsize);
1112 newv[newindex++] = argv[i++];
1116 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1120 target_option_translations[tott_idx].option_found;
1123 if (strcmp (target_option_translations[tott_idx].option_found,
1130 for (sp = target_option_translations[tott_idx].replacements;
1137 newvsize += spaces * sizeof (const char *);
1138 newv = xrealloc (newv, newvsize);
1140 sp = target_option_translations[tott_idx].replacements;
1149 newv[newindex++] = np;
1150 while (*np != ' ' && *np)
1161 if (target_option_translations[tott_idx].option_found)
1165 /* Translate -- options. */
1166 if (argv[i][0] == '-' && argv[i][1] == '-')
1169 /* Find a mapping that applies to this option. */
1170 for (j = 0; j < ARRAY_SIZE (option_map); j++)
1172 size_t optlen = strlen (option_map[j].name);
1173 size_t arglen = strlen (argv[i]);
1174 size_t complen = arglen > optlen ? optlen : arglen;
1175 const char *arginfo = option_map[j].arg_info;
1180 if (!strncmp (argv[i], option_map[j].name, complen))
1182 const char *arg = 0;
1184 if (arglen < optlen)
1187 for (k = j + 1; k < ARRAY_SIZE (option_map); k++)
1188 if (strlen (option_map[k].name) >= arglen
1189 && !strncmp (argv[i], option_map[k].name, arglen))
1191 error ("ambiguous abbreviation %s", argv[i]);
1195 if (k != ARRAY_SIZE (option_map))
1199 if (arglen > optlen)
1201 /* If the option has an argument, accept that. */
1202 if (argv[i][optlen] == '=')
1203 arg = argv[i] + optlen + 1;
1205 /* If this mapping requires extra text at end of name,
1206 accept that as "argument". */
1207 else if (strchr (arginfo, '*') != 0)
1208 arg = argv[i] + optlen;
1210 /* Otherwise, extra text at end means mismatch.
1211 Try other mappings. */
1216 else if (strchr (arginfo, '*') != 0)
1218 error ("incomplete `%s' option", option_map[j].name);
1222 /* Handle arguments. */
1223 if (strchr (arginfo, 'a') != 0)
1229 error ("missing argument to `%s' option",
1230 option_map[j].name);
1237 else if (strchr (arginfo, '*') != 0)
1239 else if (strchr (arginfo, 'o') == 0)
1242 error ("extraneous argument to `%s' option",
1243 option_map[j].name);
1247 /* Store the translation as one argv elt or as two. */
1248 if (arg != 0 && strchr (arginfo, 'j') != 0)
1249 newv[newindex++] = concat (option_map[j].equivalent, arg,
1253 newv[newindex++] = option_map[j].equivalent;
1254 newv[newindex++] = arg;
1257 newv[newindex++] = option_map[j].equivalent;
1265 /* Handle old-fashioned options--just copy them through,
1266 with their arguments. */
1267 else if (argv[i][0] == '-')
1269 const char *p = argv[i] + 1;
1273 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
1274 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
1275 else if (WORD_SWITCH_TAKES_ARG (p))
1276 nskip += WORD_SWITCH_TAKES_ARG (p);
1277 else if ((c == 'B' || c == 'b' || c == 'x')
1280 else if (! strcmp (p, "Xlinker"))
1282 else if (! strcmp (p, "Xpreprocessor"))
1284 else if (! strcmp (p, "Xassembler"))
1287 /* Watch out for an option at the end of the command line that
1288 is missing arguments, and avoid skipping past the end of the
1290 if (nskip + i > argc)
1295 newv[newindex++] = argv[i++];
1300 /* Ordinary operands, or +e options. */
1301 newv[newindex++] = argv[i++];
1311 skip_whitespace (char *p)
1315 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1316 be considered whitespace. */
1317 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1319 else if (*p == '\n' || *p == ' ' || *p == '\t')
1333 /* Structures to keep track of prefixes to try when looking for files. */
1337 const char *prefix; /* String to prepend to the path. */
1338 struct prefix_list *next; /* Next in linked list. */
1339 int require_machine_suffix; /* Don't use without machine_suffix. */
1340 /* 2 means try both machine_suffix and just_machine_suffix. */
1341 int *used_flag_ptr; /* 1 if a file was found with this prefix. */
1342 int priority; /* Sort key - priority within list. */
1343 int os_multilib; /* 1 if OS multilib scheme should be used,
1344 0 for GCC multilib scheme. */
1349 struct prefix_list *plist; /* List of prefixes to try */
1350 int max_len; /* Max length of a prefix in PLIST */
1351 const char *name; /* Name of this list (used in config stuff) */
1354 /* List of prefixes to try when looking for executables. */
1356 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1358 /* List of prefixes to try when looking for startup (crt0) files. */
1360 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1362 /* List of prefixes to try when looking for include files. */
1364 static struct path_prefix include_prefixes = { 0, 0, "include" };
1366 /* Suffix to attach to directories searched for commands.
1367 This looks like `MACHINE/VERSION/'. */
1369 static const char *machine_suffix = 0;
1371 /* Suffix to attach to directories searched for commands.
1372 This is just `MACHINE/'. */
1374 static const char *just_machine_suffix = 0;
1376 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1378 static const char *gcc_exec_prefix;
1380 /* Adjusted value of standard_libexec_prefix. */
1382 static const char *gcc_libexec_prefix;
1384 /* Default prefixes to attach to command names. */
1386 #ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */
1387 #undef MD_EXEC_PREFIX
1388 #undef MD_STARTFILE_PREFIX
1389 #undef MD_STARTFILE_PREFIX_1
1392 /* If no prefixes defined, use the null string, which will disable them. */
1393 #ifndef MD_EXEC_PREFIX
1394 #define MD_EXEC_PREFIX ""
1396 #ifndef MD_STARTFILE_PREFIX
1397 #define MD_STARTFILE_PREFIX ""
1399 #ifndef MD_STARTFILE_PREFIX_1
1400 #define MD_STARTFILE_PREFIX_1 ""
1403 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1404 static const char *const standard_exec_prefix_1 = "/usr/libexec/gcc/";
1405 static const char *const standard_exec_prefix_2 = "/usr/lib/gcc/";
1406 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1408 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1409 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1410 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1411 static const char *const standard_startfile_prefix_1 = "/lib/";
1412 static const char *const standard_startfile_prefix_2 = "/usr/lib/";
1414 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1415 static const char *tooldir_prefix;
1417 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1419 static const char *standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1421 /* Subdirectory to use for locating libraries. Set by
1422 set_multilib_dir based on the compilation options. */
1424 static const char *multilib_dir;
1426 /* Subdirectory to use for locating libraries in OS conventions. Set by
1427 set_multilib_dir based on the compilation options. */
1429 static const char *multilib_os_dir;
1431 /* Structure to keep track of the specs that have been defined so far.
1432 These are accessed using %(specname) or %[specname] in a compiler
1437 /* The following 2 fields must be first */
1438 /* to allow EXTRA_SPECS to be initialized */
1439 const char *name; /* name of the spec. */
1440 const char *ptr; /* available ptr if no static pointer */
1442 /* The following fields are not initialized */
1443 /* by EXTRA_SPECS */
1444 const char **ptr_spec; /* pointer to the spec itself. */
1445 struct spec_list *next; /* Next spec in linked list. */
1446 int name_len; /* length of the name */
1447 int alloc_p; /* whether string was allocated */
1450 #define INIT_STATIC_SPEC(NAME,PTR) \
1451 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1453 /* List of statically defined specs. */
1454 static struct spec_list static_specs[] =
1456 INIT_STATIC_SPEC ("asm", &asm_spec),
1457 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1458 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1459 INIT_STATIC_SPEC ("asm_options", &asm_options),
1460 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1461 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1462 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1463 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1464 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1465 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1466 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1467 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1468 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1469 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1470 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1471 INIT_STATIC_SPEC ("link", &link_spec),
1472 INIT_STATIC_SPEC ("lib", &lib_spec),
1473 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1474 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1475 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces),
1476 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1477 INIT_STATIC_SPEC ("version", &compiler_version),
1478 INIT_STATIC_SPEC ("multilib", &multilib_select),
1479 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1480 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1481 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1482 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1483 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1484 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1485 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1486 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1487 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1488 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1489 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1490 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1491 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1494 #ifdef EXTRA_SPECS /* additional specs needed */
1495 /* Structure to keep track of just the first two args of a spec_list.
1496 That is all that the EXTRA_SPECS macro gives us. */
1499 const char *const name;
1500 const char *const ptr;
1503 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1504 static struct spec_list *extra_specs = (struct spec_list *) 0;
1507 /* List of dynamically allocates specs that have been defined so far. */
1509 static struct spec_list *specs = (struct spec_list *) 0;
1511 /* List of static spec functions. */
1513 static const struct spec_function static_spec_functions[] =
1515 { "if-exists", if_exists_spec_function },
1516 { "if-exists-else", if_exists_else_spec_function },
1520 static int processing_spec_function;
1522 /* Add appropriate libgcc specs to OBSTACK, taking into account
1523 various permutations of -shared-libgcc, -shared, and such. */
1525 #ifdef ENABLE_SHARED_LIBGCC
1527 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1528 const char *static_name, const char *eh_name)
1532 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name,
1533 "}%{!static:%{!static-libgcc:",
1534 #ifdef HAVE_LD_AS_NEEDED
1535 "%{!shared-libgcc:", static_name,
1536 " --as-needed ", shared_name, " --no-as-needed}"
1537 "%{shared-libgcc:", shared_name, "%{!shared: ", static_name,
1540 "%{!shared:%{!shared-libgcc:", static_name, " ",
1541 eh_name, "}%{shared-libgcc:", shared_name, " ",
1542 static_name, "}}%{shared:",
1544 "%{shared-libgcc:", shared_name,
1545 "}%{!shared-libgcc:", static_name, "}",
1552 obstack_grow (obstack, buf, strlen (buf));
1555 #endif /* ENABLE_SHARED_LIBGCC */
1557 /* Initialize the specs lookup routines. */
1562 struct spec_list *next = (struct spec_list *) 0;
1563 struct spec_list *sl = (struct spec_list *) 0;
1567 return; /* Already initialized. */
1570 notice ("Using built-in specs.\n");
1573 extra_specs = xcalloc (sizeof (struct spec_list),
1574 ARRAY_SIZE (extra_specs_1));
1576 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1578 sl = &extra_specs[i];
1579 sl->name = extra_specs_1[i].name;
1580 sl->ptr = extra_specs_1[i].ptr;
1582 sl->name_len = strlen (sl->name);
1583 sl->ptr_spec = &sl->ptr;
1588 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
1589 on ?: in file-scope variable initializations. */
1590 asm_debug = ASM_DEBUG_SPEC;
1592 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1594 sl = &static_specs[i];
1599 #ifdef ENABLE_SHARED_LIBGCC
1600 /* ??? If neither -shared-libgcc nor --static-libgcc was
1601 seen, then we should be making an educated guess. Some proposed
1602 heuristics for ELF include:
1604 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1605 program will be doing dynamic loading, which will likely
1606 need the shared libgcc.
1608 (2) If "-ldl", then it's also a fair bet that we're doing
1611 (3) For each ET_DYN we're linking against (either through -lfoo
1612 or /some/path/foo.so), check to see whether it or one of
1613 its dependencies depends on a shared libgcc.
1617 If the runtime is fixed to look for program headers instead
1618 of calling __register_frame_info at all, for each object,
1619 use the shared libgcc if any EH symbol referenced.
1621 If crtstuff is fixed to not invoke __register_frame_info
1622 automatically, for each object, use the shared libgcc if
1623 any non-empty unwind section found.
1625 Doing any of this probably requires invoking an external program to
1626 do the actual object file scanning. */
1628 const char *p = libgcc_spec;
1631 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1632 when given the proper command line arguments. */
1635 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1637 init_gcc_specs (&obstack,
1638 #ifdef NO_SHARED_LIBGCC_MULTILIB
1643 #ifdef USE_LIBUNWIND_EXCEPTIONS
1649 #ifdef USE_LIBUNWIND_EXCEPTIONS
1657 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1659 /* Ug. We don't know shared library extensions. Hope that
1660 systems that use this form don't do shared libraries. */
1661 init_gcc_specs (&obstack,
1662 #ifdef NO_SHARED_LIBGCC_MULTILIB
1670 #ifdef USE_LIBUNWIND_EXCEPTIONS
1679 obstack_1grow (&obstack, *p);
1680 in_sep = (*p == ' ');
1685 obstack_1grow (&obstack, '\0');
1686 libgcc_spec = obstack_finish (&obstack);
1689 #ifdef USE_AS_TRADITIONAL_FORMAT
1690 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1692 static const char tf[] = "--traditional-format ";
1693 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1694 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1695 asm_spec = obstack_finish (&obstack);
1699 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1700 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1701 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1702 link_spec = obstack_finish (&obstack);
1708 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1709 removed; If the spec starts with a + then SPEC is added to the end of the
1713 set_spec (const char *name, const char *spec)
1715 struct spec_list *sl;
1716 const char *old_spec;
1717 int name_len = strlen (name);
1720 /* If this is the first call, initialize the statically allocated specs. */
1723 struct spec_list *next = (struct spec_list *) 0;
1724 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1726 sl = &static_specs[i];
1733 /* See if the spec already exists. */
1734 for (sl = specs; sl; sl = sl->next)
1735 if (name_len == sl->name_len && !strcmp (sl->name, name))
1740 /* Not found - make it. */
1741 sl = xmalloc (sizeof (struct spec_list));
1742 sl->name = xstrdup (name);
1743 sl->name_len = name_len;
1744 sl->ptr_spec = &sl->ptr;
1746 *(sl->ptr_spec) = "";
1751 old_spec = *(sl->ptr_spec);
1752 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1753 ? concat (old_spec, spec + 1, NULL)
1758 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1761 /* Free the old spec. */
1762 if (old_spec && sl->alloc_p)
1763 free ((void *) old_spec);
1768 /* Accumulate a command (program name and args), and run it. */
1770 /* Vector of pointers to arguments in the current line of specifications. */
1772 static const char **argbuf;
1774 /* Number of elements allocated in argbuf. */
1776 static int argbuf_length;
1778 /* Number of elements in argbuf currently in use (containing args). */
1780 static int argbuf_index;
1782 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1783 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1786 static struct temp_name {
1787 const char *suffix; /* suffix associated with the code. */
1788 int length; /* strlen (suffix). */
1789 int unique; /* Indicates whether %g or %u/%U was used. */
1790 const char *filename; /* associated filename. */
1791 int filename_length; /* strlen (filename). */
1792 struct temp_name *next;
1795 /* Number of commands executed so far. */
1797 static int execution_count;
1799 /* Number of commands that exited with a signal. */
1801 static int signal_count;
1803 /* Name with which this program was invoked. */
1805 static const char *programname;
1807 /* Allocate the argument vector. */
1813 argbuf = xmalloc (argbuf_length * sizeof (const char *));
1816 /* Clear out the vector of arguments (after a command is executed). */
1824 /* Add one argument to the vector at the end.
1825 This is done when a space is seen or at the end of the line.
1826 If DELETE_ALWAYS is nonzero, the arg is a filename
1827 and the file should be deleted eventually.
1828 If DELETE_FAILURE is nonzero, the arg is a filename
1829 and the file should be deleted if this compilation fails. */
1832 store_arg (const char *arg, int delete_always, int delete_failure)
1834 if (argbuf_index + 1 == argbuf_length)
1835 argbuf = xrealloc (argbuf, (argbuf_length *= 2) * sizeof (const char *));
1837 argbuf[argbuf_index++] = arg;
1838 argbuf[argbuf_index] = 0;
1840 if (delete_always || delete_failure)
1841 record_temp_file (arg, delete_always, delete_failure);
1844 /* Load specs from a file name named FILENAME, replacing occurrences of
1845 various different types of line-endings, \r\n, \n\r and just \r, with
1849 load_specs (const char *filename)
1853 struct stat statbuf;
1860 notice ("Reading specs from %s\n", filename);
1862 /* Open and stat the file. */
1863 desc = open (filename, O_RDONLY, 0);
1865 pfatal_with_name (filename);
1866 if (stat (filename, &statbuf) < 0)
1867 pfatal_with_name (filename);
1869 /* Read contents of file into BUFFER. */
1870 buffer = xmalloc ((unsigned) statbuf.st_size + 1);
1871 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1873 pfatal_with_name (filename);
1874 buffer[readlen] = 0;
1877 specs = xmalloc (readlen + 1);
1879 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1885 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1887 else if (*(buffer_p + 1) == '\n') /* \r\n */
1901 /* Read compilation specs from a file named FILENAME,
1902 replacing the default ones.
1904 A suffix which starts with `*' is a definition for
1905 one of the machine-specific sub-specs. The "suffix" should be
1906 *asm, *cc1, *cpp, *link, *startfile, etc.
1907 The corresponding spec is stored in asm_spec, etc.,
1908 rather than in the `compilers' vector.
1910 Anything invalid in the file is a fatal error. */
1913 read_specs (const char *filename, int main_p)
1918 buffer = load_specs (filename);
1920 /* Scan BUFFER for specs, putting them in the vector. */
1926 char *in, *out, *p1, *p2, *p3;
1928 /* Advance P in BUFFER to the next nonblank nocomment line. */
1929 p = skip_whitespace (p);
1933 /* Is this a special command that starts with '%'? */
1934 /* Don't allow this for the main specs file, since it would
1935 encourage people to overwrite it. */
1936 if (*p == '%' && !main_p)
1939 while (*p && *p != '\n')
1945 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1946 && (p1[sizeof "%include" - 1] == ' '
1947 || p1[sizeof "%include" - 1] == '\t'))
1951 p1 += sizeof ("%include");
1952 while (*p1 == ' ' || *p1 == '\t')
1955 if (*p1++ != '<' || p[-2] != '>')
1956 fatal ("specs %%include syntax malformed after %ld characters",
1957 (long) (p1 - buffer + 1));
1960 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, 0);
1961 read_specs (new_filename ? new_filename : p1, FALSE);
1964 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1965 && (p1[sizeof "%include_noerr" - 1] == ' '
1966 || p1[sizeof "%include_noerr" - 1] == '\t'))
1970 p1 += sizeof "%include_noerr";
1971 while (*p1 == ' ' || *p1 == '\t')
1974 if (*p1++ != '<' || p[-2] != '>')
1975 fatal ("specs %%include syntax malformed after %ld characters",
1976 (long) (p1 - buffer + 1));
1979 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, 0);
1981 read_specs (new_filename, FALSE);
1982 else if (verbose_flag)
1983 notice ("could not find specs file %s\n", p1);
1986 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1987 && (p1[sizeof "%rename" - 1] == ' '
1988 || p1[sizeof "%rename" - 1] == '\t'))
1991 struct spec_list *sl;
1992 struct spec_list *newsl;
1994 /* Get original name. */
1995 p1 += sizeof "%rename";
1996 while (*p1 == ' ' || *p1 == '\t')
1999 if (! ISALPHA ((unsigned char) *p1))
2000 fatal ("specs %%rename syntax malformed after %ld characters",
2001 (long) (p1 - buffer));
2004 while (*p2 && !ISSPACE ((unsigned char) *p2))
2007 if (*p2 != ' ' && *p2 != '\t')
2008 fatal ("specs %%rename syntax malformed after %ld characters",
2009 (long) (p2 - buffer));
2013 while (*p2 == ' ' || *p2 == '\t')
2016 if (! ISALPHA ((unsigned char) *p2))
2017 fatal ("specs %%rename syntax malformed after %ld characters",
2018 (long) (p2 - buffer));
2020 /* Get new spec name. */
2022 while (*p3 && !ISSPACE ((unsigned char) *p3))
2026 fatal ("specs %%rename syntax malformed after %ld characters",
2027 (long) (p3 - buffer));
2030 for (sl = specs; sl; sl = sl->next)
2031 if (name_len == sl->name_len && !strcmp (sl->name, p1))
2035 fatal ("specs %s spec was not found to be renamed", p1);
2037 if (strcmp (p1, p2) == 0)
2040 for (newsl = specs; newsl; newsl = newsl->next)
2041 if (strcmp (newsl->name, p2) == 0)
2042 fatal ("%s: attempt to rename spec '%s' to already defined spec '%s'",
2047 notice ("rename spec %s to %s\n", p1, p2);
2049 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
2053 set_spec (p2, *(sl->ptr_spec));
2055 free ((void *) *(sl->ptr_spec));
2057 *(sl->ptr_spec) = "";
2062 fatal ("specs unknown %% command after %ld characters",
2063 (long) (p1 - buffer));
2066 /* Find the colon that should end the suffix. */
2068 while (*p1 && *p1 != ':' && *p1 != '\n')
2071 /* The colon shouldn't be missing. */
2073 fatal ("specs file malformed after %ld characters",
2074 (long) (p1 - buffer));
2076 /* Skip back over trailing whitespace. */
2078 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
2081 /* Copy the suffix to a string. */
2082 suffix = save_string (p, p2 - p);
2083 /* Find the next line. */
2084 p = skip_whitespace (p1 + 1);
2086 fatal ("specs file malformed after %ld characters",
2087 (long) (p - buffer));
2090 /* Find next blank line or end of string. */
2091 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
2094 /* Specs end at the blank line and do not include the newline. */
2095 spec = save_string (p, p1 - p);
2098 /* Delete backslash-newline sequences from the spec. */
2103 if (in[0] == '\\' && in[1] == '\n')
2105 else if (in[0] == '#')
2106 while (*in && *in != '\n')
2114 if (suffix[0] == '*')
2116 if (! strcmp (suffix, "*link_command"))
2117 link_command_spec = spec;
2119 set_spec (suffix + 1, spec);
2123 /* Add this pair to the vector. */
2125 = xrealloc (compilers,
2126 (n_compilers + 2) * sizeof (struct compiler));
2128 compilers[n_compilers].suffix = suffix;
2129 compilers[n_compilers].spec = spec;
2131 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2135 link_command_spec = spec;
2138 if (link_command_spec == 0)
2139 fatal ("spec file has no spec for linking");
2142 /* Record the names of temporary files we tell compilers to write,
2143 and delete them at the end of the run. */
2145 /* This is the common prefix we use to make temp file names.
2146 It is chosen once for each run of this program.
2147 It is substituted into a spec by %g or %j.
2148 Thus, all temp file names contain this prefix.
2149 In practice, all temp file names start with this prefix.
2151 This prefix comes from the envvar TMPDIR if it is defined;
2152 otherwise, from the P_tmpdir macro if that is defined;
2153 otherwise, in /usr/tmp or /tmp;
2154 or finally the current directory if all else fails. */
2156 static const char *temp_filename;
2158 /* Length of the prefix. */
2160 static int temp_filename_length;
2162 /* Define the list of temporary files to delete. */
2167 struct temp_file *next;
2170 /* Queue of files to delete on success or failure of compilation. */
2171 static struct temp_file *always_delete_queue;
2172 /* Queue of files to delete on failure of compilation. */
2173 static struct temp_file *failure_delete_queue;
2175 /* Record FILENAME as a file to be deleted automatically.
2176 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2177 otherwise delete it in any case.
2178 FAIL_DELETE nonzero means delete it if a compilation step fails;
2179 otherwise delete it in any case. */
2182 record_temp_file (const char *filename, int always_delete, int fail_delete)
2184 char *const name = xstrdup (filename);
2188 struct temp_file *temp;
2189 for (temp = always_delete_queue; temp; temp = temp->next)
2190 if (! strcmp (name, temp->name))
2193 temp = xmalloc (sizeof (struct temp_file));
2194 temp->next = always_delete_queue;
2196 always_delete_queue = temp;
2203 struct temp_file *temp;
2204 for (temp = failure_delete_queue; temp; temp = temp->next)
2205 if (! strcmp (name, temp->name))
2208 temp = xmalloc (sizeof (struct temp_file));
2209 temp->next = failure_delete_queue;
2211 failure_delete_queue = temp;
2217 /* Delete all the temporary files whose names we previously recorded. */
2220 delete_if_ordinary (const char *name)
2226 printf ("Delete %s? (y or n) ", name);
2230 while ((c = getchar ()) != '\n' && c != EOF)
2233 if (i == 'y' || i == 'Y')
2235 if (stat (name, &st) >= 0 && S_ISREG (st.st_mode))
2236 if (unlink (name) < 0)
2238 perror_with_name (name);
2242 delete_temp_files (void)
2244 struct temp_file *temp;
2246 for (temp = always_delete_queue; temp; temp = temp->next)
2247 delete_if_ordinary (temp->name);
2248 always_delete_queue = 0;
2251 /* Delete all the files to be deleted on error. */
2254 delete_failure_queue (void)
2256 struct temp_file *temp;
2258 for (temp = failure_delete_queue; temp; temp = temp->next)
2259 delete_if_ordinary (temp->name);
2263 clear_failure_queue (void)
2265 failure_delete_queue = 0;
2268 /* Build a list of search directories from PATHS.
2269 PREFIX is a string to prepend to the list.
2270 If CHECK_DIR_P is nonzero we ensure the directory exists.
2271 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2272 It is also used by the --print-search-dirs flag. */
2275 build_search_list (struct path_prefix *paths, const char *prefix,
2278 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0;
2280 = (just_machine_suffix) ? strlen (just_machine_suffix) : 0;
2281 int first_time = TRUE;
2282 struct prefix_list *pprefix;
2284 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2285 obstack_1grow (&collect_obstack, '=');
2287 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next)
2289 int len = strlen (pprefix->prefix);
2293 || is_directory (pprefix->prefix, machine_suffix, 0)))
2296 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2299 obstack_grow (&collect_obstack, pprefix->prefix, len);
2300 obstack_grow (&collect_obstack, machine_suffix, suffix_len);
2303 if (just_machine_suffix
2304 && pprefix->require_machine_suffix == 2
2306 || is_directory (pprefix->prefix, just_machine_suffix, 0)))
2309 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2312 obstack_grow (&collect_obstack, pprefix->prefix, len);
2313 obstack_grow (&collect_obstack, just_machine_suffix,
2317 if (! pprefix->require_machine_suffix)
2320 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2323 obstack_grow (&collect_obstack, pprefix->prefix, len);
2327 obstack_1grow (&collect_obstack, '\0');
2328 return obstack_finish (&collect_obstack);
2331 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2335 putenv_from_prefixes (struct path_prefix *paths, const char *env_var)
2337 putenv (build_search_list (paths, env_var, 1));
2340 /* Check whether NAME can be accessed in MODE. This is like access,
2341 except that it never considers directories to be executable. */
2344 access_check (const char *name, int mode)
2350 if (stat (name, &st) < 0
2351 || S_ISDIR (st.st_mode))
2355 return access (name, mode);
2358 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2359 access to check permissions.
2360 Return 0 if not found, otherwise return its name, allocated with malloc. */
2363 find_a_file (struct path_prefix *pprefix, const char *name, int mode,
2367 const char *const file_suffix =
2368 ((mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "");
2369 struct prefix_list *pl;
2370 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1;
2371 const char *multilib_name, *multilib_os_name;
2373 #ifdef DEFAULT_ASSEMBLER
2374 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2375 return xstrdup (DEFAULT_ASSEMBLER);
2378 #ifdef DEFAULT_LINKER
2379 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2380 return xstrdup (DEFAULT_LINKER);
2384 len += strlen (machine_suffix);
2386 multilib_name = name;
2387 multilib_os_name = name;
2388 if (multilib && multilib_os_dir)
2390 int len1 = multilib_dir ? strlen (multilib_dir) + 1 : 0;
2391 int len2 = strlen (multilib_os_dir) + 1;
2393 len += len1 > len2 ? len1 : len2;
2395 multilib_name = ACONCAT ((multilib_dir, dir_separator_str, name,
2397 if (strcmp (multilib_os_dir, ".") != 0)
2398 multilib_os_name = ACONCAT ((multilib_os_dir, dir_separator_str, name,
2402 temp = xmalloc (len);
2404 /* Determine the filename to execute (special case for absolute paths). */
2406 if (IS_ABSOLUTE_PATH (name))
2408 if (access (name, mode) == 0)
2410 strcpy (temp, name);
2415 for (pl = pprefix->plist; pl; pl = pl->next)
2417 const char *this_name
2418 = pl->os_multilib ? multilib_os_name : multilib_name;
2422 /* Some systems have a suffix for executable files.
2423 So try appending that first. */
2424 if (file_suffix[0] != 0)
2426 strcpy (temp, pl->prefix);
2427 strcat (temp, machine_suffix);
2428 strcat (temp, multilib_name);
2429 strcat (temp, file_suffix);
2430 if (access_check (temp, mode) == 0)
2432 if (pl->used_flag_ptr != 0)
2433 *pl->used_flag_ptr = 1;
2438 /* Now try just the multilib_name. */
2439 strcpy (temp, pl->prefix);
2440 strcat (temp, machine_suffix);
2441 strcat (temp, multilib_name);
2442 if (access_check (temp, mode) == 0)
2444 if (pl->used_flag_ptr != 0)
2445 *pl->used_flag_ptr = 1;
2450 /* Certain prefixes are tried with just the machine type,
2451 not the version. This is used for finding as, ld, etc. */
2452 if (just_machine_suffix && pl->require_machine_suffix == 2)
2454 /* Some systems have a suffix for executable files.
2455 So try appending that first. */
2456 if (file_suffix[0] != 0)
2458 strcpy (temp, pl->prefix);
2459 strcat (temp, just_machine_suffix);
2460 strcat (temp, multilib_name);
2461 strcat (temp, file_suffix);
2462 if (access_check (temp, mode) == 0)
2464 if (pl->used_flag_ptr != 0)
2465 *pl->used_flag_ptr = 1;
2470 strcpy (temp, pl->prefix);
2471 strcat (temp, just_machine_suffix);
2472 strcat (temp, multilib_name);
2473 if (access_check (temp, mode) == 0)
2475 if (pl->used_flag_ptr != 0)
2476 *pl->used_flag_ptr = 1;
2481 /* Certain prefixes can't be used without the machine suffix
2482 when the machine or version is explicitly specified. */
2483 if (! pl->require_machine_suffix)
2485 /* Some systems have a suffix for executable files.
2486 So try appending that first. */
2487 if (file_suffix[0] != 0)
2489 strcpy (temp, pl->prefix);
2490 strcat (temp, this_name);
2491 strcat (temp, file_suffix);
2492 if (access_check (temp, mode) == 0)
2494 if (pl->used_flag_ptr != 0)
2495 *pl->used_flag_ptr = 1;
2500 strcpy (temp, pl->prefix);
2501 strcat (temp, this_name);
2502 if (access_check (temp, mode) == 0)
2504 if (pl->used_flag_ptr != 0)
2505 *pl->used_flag_ptr = 1;
2515 /* Ranking of prefixes in the sort list. -B prefixes are put before
2518 enum path_prefix_priority
2520 PREFIX_PRIORITY_B_OPT,
2521 PREFIX_PRIORITY_LAST
2524 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2525 order according to PRIORITY. Within each PRIORITY, new entries are
2528 If WARN is nonzero, we will warn if no file is found
2529 through this prefix. WARN should point to an int
2530 which will be set to 1 if this entry is used.
2532 COMPONENT is the value to be passed to update_path.
2534 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2535 the complete value of machine_suffix.
2536 2 means try both machine_suffix and just_machine_suffix. */
2539 add_prefix (struct path_prefix *pprefix, const char *prefix,
2540 const char *component, /* enum prefix_priority */ int priority,
2541 int require_machine_suffix, int *warn, int os_multilib)
2543 struct prefix_list *pl, **prev;
2546 for (prev = &pprefix->plist;
2547 (*prev) != NULL && (*prev)->priority <= priority;
2548 prev = &(*prev)->next)
2551 /* Keep track of the longest prefix. */
2553 prefix = update_path (prefix, component);
2554 len = strlen (prefix);
2555 if (len > pprefix->max_len)
2556 pprefix->max_len = len;
2558 pl = xmalloc (sizeof (struct prefix_list));
2559 pl->prefix = prefix;
2560 pl->require_machine_suffix = require_machine_suffix;
2561 pl->used_flag_ptr = warn;
2562 pl->priority = priority;
2563 pl->os_multilib = os_multilib;
2567 /* Insert after PREV. */
2572 /* Same as add_prefix, but prepending target_system_root to prefix. */
2574 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2575 const char *component,
2576 /* enum prefix_priority */ int priority,
2577 int require_machine_suffix, int *warn, int os_multilib)
2579 if (!IS_ABSOLUTE_PATH (prefix))
2582 if (target_system_root)
2584 if (target_sysroot_suffix)
2585 prefix = concat (target_sysroot_suffix, prefix, NULL);
2586 prefix = concat (target_system_root, prefix, NULL);
2588 /* We have to override this because GCC's notion of sysroot
2589 moves along with GCC. */
2593 add_prefix (pprefix, prefix, component, priority,
2594 require_machine_suffix, warn, os_multilib);
2597 /* Execute the command specified by the arguments on the current line of spec.
2598 When using pipes, this includes several piped-together commands
2599 with `|' between them.
2601 Return 0 if successful, -1 if failed. */
2607 int n_commands; /* # of command. */
2611 const char *prog; /* program name. */
2612 const char **argv; /* vector of args. */
2613 int pid; /* pid of process for this command. */
2616 struct command *commands; /* each command buffer with above info. */
2618 if (processing_spec_function)
2621 /* Count # of piped commands. */
2622 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2623 if (strcmp (argbuf[i], "|") == 0)
2626 /* Get storage for each command. */
2627 commands = alloca (n_commands * sizeof (struct command));
2629 /* Split argbuf into its separate piped processes,
2630 and record info about each one.
2631 Also search for the programs that are to be run. */
2633 commands[0].prog = argbuf[0]; /* first command. */
2634 commands[0].argv = &argbuf[0];
2635 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, 0);
2638 commands[0].argv[0] = string;
2640 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2641 if (strcmp (argbuf[i], "|") == 0)
2642 { /* each command. */
2643 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2644 fatal ("-pipe not supported");
2646 argbuf[i] = 0; /* termination of command args. */
2647 commands[n_commands].prog = argbuf[i + 1];
2648 commands[n_commands].argv = &argbuf[i + 1];
2649 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2652 commands[n_commands].argv[0] = string;
2656 argbuf[argbuf_index] = 0;
2658 /* If -v, print what we are about to do, and maybe query. */
2662 /* For help listings, put a blank line between sub-processes. */
2663 if (print_help_list)
2664 fputc ('\n', stderr);
2666 /* Print each piped command as a separate line. */
2667 for (i = 0; i < n_commands; i++)
2669 const char *const *j;
2671 if (verbose_only_flag)
2673 for (j = commands[i].argv; *j; j++)
2676 fprintf (stderr, " \"");
2677 for (p = *j; *p; ++p)
2679 if (*p == '"' || *p == '\\' || *p == '$')
2680 fputc ('\\', stderr);
2683 fputc ('"', stderr);
2687 for (j = commands[i].argv; *j; j++)
2688 fprintf (stderr, " %s", *j);
2690 /* Print a pipe symbol after all but the last command. */
2691 if (i + 1 != n_commands)
2692 fprintf (stderr, " |");
2693 fprintf (stderr, "\n");
2696 if (verbose_only_flag != 0)
2698 /* verbose_only_flag should act as if the spec was
2699 executed, so increment execution_count before
2700 returning. This prevents spurious warnings about
2701 unused linker input files, etc. */
2706 notice ("\nGo ahead? (y or n) ");
2710 while (getchar () != '\n')
2713 if (i != 'y' && i != 'Y')
2718 #ifdef ENABLE_VALGRIND_CHECKING
2719 /* Run the each command through valgrind. To simplify prepending the
2720 path to valgrind and the option "-q" (for quiet operation unless
2721 something triggers), we allocate a separate argv array. */
2723 for (i = 0; i < n_commands; i++)
2729 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2732 argv = alloca ((argc + 3) * sizeof (char *));
2734 argv[0] = VALGRIND_PATH;
2736 for (j = 2; j < argc + 2; j++)
2737 argv[j] = commands[i].argv[j - 2];
2740 commands[i].argv = argv;
2741 commands[i].prog = argv[0];
2745 /* Run each piped subprocess. */
2747 for (i = 0; i < n_commands; i++)
2749 char *errmsg_fmt, *errmsg_arg;
2750 const char *string = commands[i].argv[0];
2752 /* For some bizarre reason, the second argument of execvp() is
2753 char *const *, not const char *const *. */
2754 commands[i].pid = pexecute (string, (char *const *) commands[i].argv,
2755 programname, temp_filename,
2756 &errmsg_fmt, &errmsg_arg,
2757 ((i == 0 ? PEXECUTE_FIRST : 0)
2758 | (i + 1 == n_commands ? PEXECUTE_LAST : 0)
2759 | (string == commands[i].prog
2760 ? PEXECUTE_SEARCH : 0)
2761 | (verbose_flag ? PEXECUTE_VERBOSE : 0)));
2763 if (commands[i].pid == -1)
2764 pfatal_pexecute (errmsg_fmt, errmsg_arg);
2766 if (string != commands[i].prog)
2767 free ((void *) string);
2772 /* Wait for all the subprocesses to finish.
2773 We don't care what order they finish in;
2774 we know that N_COMMANDS waits will get them all.
2775 Ignore subprocesses that we don't know about,
2776 since they can be spawned by the process that exec'ed us. */
2780 #ifdef HAVE_GETRUSAGE
2782 double ut = 0.0, st = 0.0;
2785 for (i = 0; i < n_commands;)
2791 pid = pwait (commands[i].pid, &status, 0);
2795 #ifdef HAVE_GETRUSAGE
2798 /* getrusage returns the total resource usage of all children
2799 up to now. Copy the previous values into prus, get the
2800 current statistics, then take the difference. */
2803 getrusage (RUSAGE_CHILDREN, &rus);
2804 d.tv_sec = rus.ru_utime.tv_sec - prus.ru_utime.tv_sec;
2805 d.tv_usec = rus.ru_utime.tv_usec - prus.ru_utime.tv_usec;
2806 ut = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2808 d.tv_sec = rus.ru_stime.tv_sec - prus.ru_stime.tv_sec;
2809 d.tv_usec = rus.ru_stime.tv_usec - prus.ru_stime.tv_usec;
2810 st = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2814 for (j = 0; j < n_commands; j++)
2815 if (commands[j].pid == pid)
2818 if (WIFSIGNALED (status))
2821 /* SIGPIPE is a special case. It happens in -pipe mode
2822 when the compiler dies before the preprocessor is
2823 done, or the assembler dies before the compiler is
2824 done. There's generally been an error already, and
2825 this is just fallout. So don't generate another error
2826 unless we would otherwise have succeeded. */
2827 if (WTERMSIG (status) == SIGPIPE
2828 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2833 Internal error: %s (program %s)\n\
2834 Please submit a full bug report.\n\
2835 See %s for instructions.",
2836 strsignal (WTERMSIG (status)), commands[j].prog,
2841 else if (WIFEXITED (status)
2842 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2844 if (WEXITSTATUS (status) > greatest_status)
2845 greatest_status = WEXITSTATUS (status);
2848 #ifdef HAVE_GETRUSAGE
2849 if (report_times && ut + st != 0)
2850 notice ("# %s %.2f %.2f\n", commands[j].prog, ut, st);
2859 /* Find all the switches given to us
2860 and make a vector describing them.
2861 The elements of the vector are strings, one per switch given.
2862 If a switch uses following arguments, then the `part1' field
2863 is the switch itself and the `args' field
2864 is a null-terminated vector containing the following arguments.
2865 The `live_cond' field is:
2867 1 if the switch is true in a conditional spec,
2868 -1 if false (overridden by a later switch)
2869 -2 if this switch should be ignored (used in %<S)
2870 The `validated' field is nonzero if any spec has looked at this switch;
2871 if it remains zero at the end of the run, it must be meaningless. */
2874 #define SWITCH_FALSE -1
2875 #define SWITCH_IGNORE -2
2876 #define SWITCH_LIVE 1
2883 unsigned char validated;
2884 unsigned char ordering;
2887 static struct switchstr *switches;
2889 static int n_switches;
2894 const char *language;
2897 /* Also a vector of input files specified. */
2899 static struct infile *infiles;
2903 /* True if multiple input files are being compiled to a single
2906 static bool combine_inputs;
2908 /* This counts the number of libraries added by lang_specific_driver, so that
2909 we can tell if there were any user supplied any files or libraries. */
2911 static int added_libraries;
2913 /* And a vector of corresponding output files is made up later. */
2915 const char **outfiles;
2917 /* Used to track if none of the -B paths are used. */
2920 /* Gives value to pass as "warn" to add_prefix for standard prefixes. */
2921 static int *warn_std_ptr = 0;
2923 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2925 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2926 is true if we should look for an executable suffix. DO_OBJ
2927 is true if we should look for an object suffix. */
2930 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
2931 int do_obj ATTRIBUTE_UNUSED)
2933 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2941 len = strlen (name);
2943 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2944 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2945 if (do_obj && len > 2
2946 && name[len - 2] == '.'
2947 && name[len - 1] == 'o')
2949 obstack_grow (&obstack, name, len - 2);
2950 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2951 name = obstack_finish (&obstack);
2955 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2956 /* If there is no filetype, make it the executable suffix (which includes
2957 the "."). But don't get confused if we have just "-o". */
2958 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
2961 for (i = len - 1; i >= 0; i--)
2962 if (IS_DIR_SEPARATOR (name[i]))
2965 for (i++; i < len; i++)
2969 obstack_grow (&obstack, name, len);
2970 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
2971 strlen (TARGET_EXECUTABLE_SUFFIX));
2972 name = obstack_finish (&obstack);
2979 /* Display the command line switches accepted by gcc. */
2983 printf (_("Usage: %s [options] file...\n"), programname);
2984 fputs (_("Options:\n"), stdout);
2986 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
2987 fputs (_(" --help Display this information\n"), stdout);
2988 fputs (_(" --target-help Display target specific command line options\n"), stdout);
2990 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
2991 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
2992 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
2993 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
2994 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
2995 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
2996 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
2997 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
2998 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
3000 -print-multi-lib Display the mapping between command line options and\n\
3001 multiple library search directories\n"), stdout);
3002 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
3003 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3004 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3005 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3006 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
3007 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
3008 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3009 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3010 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3011 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3012 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3013 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3014 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3015 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
3016 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
3017 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3018 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3019 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3020 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3021 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3022 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3024 -x <language> Specify the language of the following input files\n\
3025 Permissible languages include: c c++ assembler none\n\
3026 'none' means revert to the default behavior of\n\
3027 guessing the language based on the file's extension\n\
3031 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3032 passed on to the various sub-processes invoked by %s. In order to pass\n\
3033 other options on to these processes the -W<letter> options must be used.\n\
3036 /* The rest of the options are displayed by invocations of the various
3041 add_preprocessor_option (const char *option, int len)
3043 n_preprocessor_options++;
3045 if (! preprocessor_options)
3046 preprocessor_options = xmalloc (n_preprocessor_options * sizeof (char *));
3048 preprocessor_options = xrealloc (preprocessor_options,
3049 n_preprocessor_options * sizeof (char *));
3051 preprocessor_options [n_preprocessor_options - 1] =
3052 save_string (option, len);
3056 add_assembler_option (const char *option, int len)
3058 n_assembler_options++;
3060 if (! assembler_options)
3061 assembler_options = xmalloc (n_assembler_options * sizeof (char *));
3063 assembler_options = xrealloc (assembler_options,
3064 n_assembler_options * sizeof (char *));
3066 assembler_options [n_assembler_options - 1] = save_string (option, len);
3070 add_linker_option (const char *option, int len)
3074 if (! linker_options)
3075 linker_options = xmalloc (n_linker_options * sizeof (char *));
3077 linker_options = xrealloc (linker_options,
3078 n_linker_options * sizeof (char *));
3080 linker_options [n_linker_options - 1] = save_string (option, len);
3083 /* Create the vector `switches' and its contents.
3084 Store its length in `n_switches'. */
3087 process_command (int argc, const char **argv)
3092 const char *spec_lang = 0;
3093 int last_language_n_infiles;
3096 int lang_n_infiles = 0;
3097 #ifdef MODIFY_TARGET_NAME
3098 int is_modify_target_name;
3102 GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3106 added_libraries = 0;
3108 /* Figure compiler version from version string. */
3110 compiler_version = temp1 = xstrdup (version_string);
3112 for (; *temp1; ++temp1)
3121 /* If there is a -V or -b option (or both), process it now, before
3122 trying to interpret the rest of the command line. */
3123 if (argc > 1 && argv[1][0] == '-'
3124 && (argv[1][1] == 'V' || argv[1][1] == 'b'))
3126 const char *new_version = DEFAULT_TARGET_VERSION;
3127 const char *new_machine = DEFAULT_TARGET_MACHINE;
3128 const char *progname = argv[0];
3133 while (argc > 1 && argv[1][0] == '-'
3134 && (argv[1][1] == 'V' || argv[1][1] == 'b'))
3136 char opt = argv[1][1];
3138 if (argv[1][2] != '\0')
3151 fatal ("`-%c' option must have argument", opt);
3158 for (baselen = strlen (progname); baselen > 0; baselen--)
3159 if (IS_DIR_SEPARATOR (progname[baselen-1]))
3161 new_argv0 = xmemdup (progname, baselen,
3162 baselen + concat_length (new_version, new_machine,
3163 "-gcc-", NULL) + 1);
3164 strcpy (new_argv0 + baselen, new_machine);
3165 strcat (new_argv0, "-gcc-");
3166 strcat (new_argv0, new_version);
3168 new_argv = xmemdup (argv, (argc + 1) * sizeof (argv[0]),
3169 (argc + 1) * sizeof (argv[0]));
3170 new_argv[0] = new_argv0;
3172 execvp (new_argv0, new_argv);
3173 fatal ("couldn't run `%s': %s", new_argv0, xstrerror (errno));
3176 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3177 see if we can create it from the pathname specified in argv[0]. */
3179 gcc_libexec_prefix = standard_libexec_prefix;
3181 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3182 if (!gcc_exec_prefix)
3184 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
3185 standard_exec_prefix);
3186 gcc_libexec_prefix = make_relative_prefix (argv[0],
3187 standard_bindir_prefix,
3188 standard_libexec_prefix);
3189 if (gcc_exec_prefix)
3190 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3193 gcc_libexec_prefix = make_relative_prefix (gcc_exec_prefix,
3194 standard_exec_prefix,
3195 standard_libexec_prefix);
3199 if (gcc_exec_prefix)
3201 int len = strlen (gcc_exec_prefix);
3203 if (len > (int) sizeof ("/lib/gcc/") - 1
3204 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3206 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3207 if (IS_DIR_SEPARATOR (*temp)
3208 && strncmp (temp + 1, "lib", 3) == 0
3209 && IS_DIR_SEPARATOR (temp[4])
3210 && strncmp (temp + 5, "gcc", 3) == 0)
3211 len -= sizeof ("/lib/gcc/") - 1;
3214 set_std_prefix (gcc_exec_prefix, len);
3215 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3216 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3217 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3218 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3221 /* COMPILER_PATH and LIBRARY_PATH have values
3222 that are lists of directory names with colons. */
3224 GET_ENVIRONMENT (temp, "COMPILER_PATH");
3227 const char *startp, *endp;
3228 char *nstore = alloca (strlen (temp) + 3);
3230 startp = endp = temp;
3233 if (*endp == PATH_SEPARATOR || *endp == 0)
3235 strncpy (nstore, startp, endp - startp);
3237 strcpy (nstore, concat (".", dir_separator_str, NULL));
3238 else if (!IS_DIR_SEPARATOR (endp[-1]))
3240 nstore[endp - startp] = DIR_SEPARATOR;
3241 nstore[endp - startp + 1] = 0;
3244 nstore[endp - startp] = 0;
3245 add_prefix (&exec_prefixes, nstore, 0,
3246 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3247 add_prefix (&include_prefixes,
3248 concat (nstore, "include", NULL),
3249 0, PREFIX_PRIORITY_LAST, 0, NULL, 0);
3252 endp = startp = endp + 1;
3259 GET_ENVIRONMENT (temp, LIBRARY_PATH_ENV);
3260 if (temp && *cross_compile == '0')
3262 const char *startp, *endp;
3263 char *nstore = alloca (strlen (temp) + 3);
3265 startp = endp = temp;
3268 if (*endp == PATH_SEPARATOR || *endp == 0)
3270 strncpy (nstore, startp, endp - startp);
3272 strcpy (nstore, concat (".", dir_separator_str, NULL));
3273 else if (!IS_DIR_SEPARATOR (endp[-1]))
3275 nstore[endp - startp] = DIR_SEPARATOR;
3276 nstore[endp - startp + 1] = 0;
3279 nstore[endp - startp] = 0;
3280 add_prefix (&startfile_prefixes, nstore, NULL,
3281 PREFIX_PRIORITY_LAST, 0, NULL, 1);
3284 endp = startp = endp + 1;
3291 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3292 GET_ENVIRONMENT (temp, "LPATH");
3293 if (temp && *cross_compile == '0')
3295 const char *startp, *endp;
3296 char *nstore = alloca (strlen (temp) + 3);
3298 startp = endp = temp;
3301 if (*endp == PATH_SEPARATOR || *endp == 0)
3303 strncpy (nstore, startp, endp - startp);
3305 strcpy (nstore, concat (".", dir_separator_str, NULL));
3306 else if (!IS_DIR_SEPARATOR (endp[-1]))
3308 nstore[endp - startp] = DIR_SEPARATOR;
3309 nstore[endp - startp + 1] = 0;
3312 nstore[endp - startp] = 0;
3313 add_prefix (&startfile_prefixes, nstore, NULL,
3314 PREFIX_PRIORITY_LAST, 0, NULL, 1);
3317 endp = startp = endp + 1;
3324 /* Convert new-style -- options to old-style. */
3325 translate_options (&argc, (const char *const **) &argv);
3327 /* Do language-specific adjustment/addition of flags. */
3328 lang_specific_driver (&argc, (const char *const **) &argv, &added_libraries);
3330 /* Scan argv twice. Here, the first time, just count how many switches
3331 there will be in their vector, and how many input files in theirs.
3332 Here we also parse the switches that cc itself uses (e.g. -v). */
3334 for (i = 1; i < argc; i++)
3336 if (! strcmp (argv[i], "-dumpspecs"))
3338 struct spec_list *sl;
3340 for (sl = specs; sl; sl = sl->next)
3341 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3342 if (link_command_spec)
3343 printf ("*link_command:\n%s\n\n", link_command_spec);
3346 else if (! strcmp (argv[i], "-dumpversion"))
3348 printf ("%s\n", spec_version);
3351 else if (! strcmp (argv[i], "-dumpmachine"))
3353 printf ("%s\n", spec_machine);
3356 else if (strcmp (argv[i], "-fversion") == 0)
3358 /* translate_options () has turned --version into -fversion. */
3359 printf (_("%s (GCC) %s\n"), programname, version_string);
3360 printf ("Copyright %s 2004 Free Software Foundation, Inc.\n",
3362 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
3363 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
3367 else if (strcmp (argv[i], "-fhelp") == 0)
3369 /* translate_options () has turned --help into -fhelp. */
3370 print_help_list = 1;
3372 /* We will be passing a dummy file on to the sub-processes. */
3376 /* CPP driver cannot obtain switch from cc1_options. */
3378 add_preprocessor_option ("--help", 6);
3379 add_assembler_option ("--help", 6);
3380 add_linker_option ("--help", 6);
3382 else if (strcmp (argv[i], "-ftarget-help") == 0)
3384 /* translate_options() has turned --target-help into -ftarget-help. */
3385 target_help_flag = 1;
3387 /* We will be passing a dummy file on to the sub-processes. */
3391 /* CPP driver cannot obtain switch from cc1_options. */
3393 add_preprocessor_option ("--target-help", 13);
3394 add_assembler_option ("--target-help", 13);
3395 add_linker_option ("--target-help", 13);
3397 else if (! strcmp (argv[i], "-pass-exit-codes"))
3399 pass_exit_codes = 1;
3402 else if (! strcmp (argv[i], "-print-search-dirs"))
3403 print_search_dirs = 1;
3404 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3405 print_file_name = "libgcc.a";
3406 else if (! strncmp (argv[i], "-print-file-name=", 17))
3407 print_file_name = argv[i] + 17;
3408 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3409 print_prog_name = argv[i] + 17;
3410 else if (! strcmp (argv[i], "-print-multi-lib"))
3411 print_multi_lib = 1;
3412 else if (! strcmp (argv[i], "-print-multi-directory"))
3413 print_multi_directory = 1;
3414 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3415 print_multi_os_directory = 1;
3416 else if (! strncmp (argv[i], "-Wa,", 4))
3419 /* Pass the rest of this option to the assembler. */
3421 /* Split the argument at commas. */
3423 for (j = 4; argv[i][j]; j++)
3424 if (argv[i][j] == ',')
3426 add_assembler_option (argv[i] + prev, j - prev);
3430 /* Record the part after the last comma. */
3431 add_assembler_option (argv[i] + prev, j - prev);
3433 else if (! strncmp (argv[i], "-Wp,", 4))
3436 /* Pass the rest of this option to the preprocessor. */
3438 /* Split the argument at commas. */
3440 for (j = 4; argv[i][j]; j++)
3441 if (argv[i][j] == ',')
3443 add_preprocessor_option (argv[i] + prev, j - prev);
3447 /* Record the part after the last comma. */
3448 add_preprocessor_option (argv[i] + prev, j - prev);
3450 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3451 /* The +e options to the C++ front-end. */
3453 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3456 /* Split the argument at commas. */
3457 for (j = 3; argv[i][j]; j++)
3458 n_infiles += (argv[i][j] == ',');
3460 else if (strcmp (argv[i], "-Xlinker") == 0)
3463 fatal ("argument to `-Xlinker' is missing");
3468 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3471 fatal ("argument to `-Xpreprocessor' is missing");
3473 add_preprocessor_option (argv[i+1], strlen (argv[i+1]));
3475 else if (strcmp (argv[i], "-Xassembler") == 0)
3478 fatal ("argument to `-Xassembler' is missing");
3480 add_assembler_option (argv[i+1], strlen (argv[i+1]));
3482 else if (strcmp (argv[i], "-l") == 0)
3485 fatal ("argument to `-l' is missing");
3490 else if (strncmp (argv[i], "-l", 2) == 0)
3492 else if (strcmp (argv[i], "-save-temps") == 0)
3494 save_temps_flag = 1;
3497 else if (strcmp (argv[i], "-specs") == 0)
3499 struct user_specs *user = xmalloc (sizeof (struct user_specs));
3501 fatal ("argument to `-specs' is missing");
3503 user->next = (struct user_specs *) 0;
3504 user->filename = argv[i];
3505 if (user_specs_tail)
3506 user_specs_tail->next = user;
3508 user_specs_head = user;
3509 user_specs_tail = user;
3511 else if (strncmp (argv[i], "-specs=", 7) == 0)
3513 struct user_specs *user = xmalloc (sizeof (struct user_specs));
3514 if (strlen (argv[i]) == 7)
3515 fatal ("argument to `-specs=' is missing");
3517 user->next = (struct user_specs *) 0;
3518 user->filename = argv[i] + 7;
3519 if (user_specs_tail)
3520 user_specs_tail->next = user;
3522 user_specs_head = user;
3523 user_specs_tail = user;
3525 else if (strcmp (argv[i], "-time") == 0)
3527 else if (strcmp (argv[i], "-pipe") == 0)
3529 /* -pipe has to go into the switches array as well as
3534 else if (strcmp (argv[i], "-###") == 0)
3536 /* This is similar to -v except that there is no execution
3537 of the commands and the echoed arguments are quoted. It
3538 is intended for use in shell scripts to capture the
3539 driver-generated command line. */
3540 verbose_only_flag++;
3543 else if (argv[i][0] == '-' && argv[i][1] != 0)
3545 const char *p = &argv[i][1];
3552 fatal ("`-%c' must come at the start of the command line", c);
3560 if (p[1] == 0 && i + 1 == argc)
3561 fatal ("argument to `-B' is missing");
3567 len = strlen (value);
3569 /* Catch the case where the user has forgotten to append a
3570 directory separator to the path. Note, they may be using
3571 -B to add an executable name prefix, eg "i386-elf-", in
3572 order to distinguish between multiple installations of
3573 GCC in the same directory. Hence we must check to see
3574 if appending a directory separator actually makes a
3575 valid directory name. */
3576 if (! IS_DIR_SEPARATOR (value [len - 1])
3577 && is_directory (value, "", 0))
3579 char *tmp = xmalloc (len + 2);
3580 strcpy (tmp, value);
3581 tmp[len] = DIR_SEPARATOR;
3586 /* As a kludge, if the arg is "[foo/]stageN/", just
3587 add "[foo/]include" to the include prefix. */
3590 && (IS_DIR_SEPARATOR (value[len - 8]))))
3591 && strncmp (value + len - 7, "stage", 5) == 0
3592 && ISDIGIT (value[len - 2])
3593 && (IS_DIR_SEPARATOR (value[len - 1])))
3596 add_prefix (&include_prefixes, "include", NULL,
3597 PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3600 char * string = xmalloc (len + 1);
3602 strncpy (string, value, len - 7);
3603 strcpy (string + len - 7, "include");
3604 add_prefix (&include_prefixes, string, NULL,
3605 PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3609 add_prefix (&exec_prefixes, value, NULL,
3610 PREFIX_PRIORITY_B_OPT, 0, &warn_B, 0);
3611 add_prefix (&startfile_prefixes, value, NULL,
3612 PREFIX_PRIORITY_B_OPT, 0, &warn_B, 0);
3613 add_prefix (&include_prefixes, concat (value, "include", NULL),
3614 NULL, PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3619 case 'v': /* Print our subcommands and print versions. */
3621 /* If they do anything other than exactly `-v', don't set
3622 verbose_flag; rather, continue on to give the error. */
3640 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3645 /* Forward scan, just in case -S or -c is specified
3652 if (argv[j][0] == '-')
3654 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
3660 else if ((skip = SWITCH_TAKES_ARG (argv[j][1])))
3661 j += skip - (argv[j][2] != 0);
3662 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1)))
3669 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3671 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0);
3673 argv[i] = convert_filename (argv[i], ! have_c, 0);
3680 #ifdef MODIFY_TARGET_NAME
3681 is_modify_target_name = 0;
3683 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3684 if (! strcmp (argv[i], modify_target[j].sw))
3686 char *new_name = xmalloc (strlen (modify_target[j].str)
3687 + strlen (spec_machine));
3690 int made_addition = 0;
3692 is_modify_target_name = 1;
3693 for (p = spec_machine, q = new_name; *p != 0; )
3695 if (modify_target[j].add_del == DELETE
3696 && (! strncmp (q, modify_target[j].str,
3697 strlen (modify_target[j].str))))
3698 p += strlen (modify_target[j].str);
3699 else if (modify_target[j].add_del == ADD
3700 && ! made_addition && *p == '-')
3702 for (r = modify_target[j].str; *r != 0; )
3710 spec_machine = new_name;
3713 if (is_modify_target_name)
3719 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
3720 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
3721 else if (WORD_SWITCH_TAKES_ARG (p))
3722 i += WORD_SWITCH_TAKES_ARG (p);
3732 combine_inputs = (have_c && have_o && lang_n_infiles > 1);
3734 if ((save_temps_flag || report_times) && use_pipes)
3736 /* -save-temps overrides -pipe, so that temp files are produced */
3737 if (save_temps_flag)
3738 error ("warning: -pipe ignored because -save-temps specified");
3739 /* -time overrides -pipe because we can't get correct stats when
3740 multiple children are running at once. */
3741 else if (report_times)
3742 error ("warning: -pipe ignored because -time specified");
3747 /* Set up the search paths before we go looking for config files. */
3749 /* These come before the md prefixes so that we will find gcc's subcommands
3750 (such as cpp) rather than those of the host system. */
3751 /* Use 2 as fourth arg meaning try just the machine as a suffix,
3752 as well as trying the machine and the version. */
3754 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
3755 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3756 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
3757 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3758 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3759 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3760 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS",
3761 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3762 add_prefix (&exec_prefixes, standard_exec_prefix_2, "BINUTILS",
3763 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3766 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3767 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3768 add_prefix (&startfile_prefixes, standard_exec_prefix_2, "BINUTILS",
3769 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3771 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3772 dir_separator_str, NULL);
3774 /* If tooldir is relative, base it on exec_prefixes. A relative
3775 tooldir lets us move the installed tree as a unit.
3777 If GCC_EXEC_PREFIX is defined, then we want to add two relative
3778 directories, so that we can search both the user specified directory
3779 and the standard place. */
3781 if (!IS_ABSOLUTE_PATH (tooldir_prefix))
3783 if (gcc_exec_prefix)
3785 char *gcc_exec_tooldir_prefix
3786 = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
3787 spec_version, dir_separator_str, tooldir_prefix, NULL);
3789 add_prefix (&exec_prefixes,
3790 concat (gcc_exec_tooldir_prefix, "bin",
3791 dir_separator_str, NULL),
3792 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 0);
3793 add_prefix (&startfile_prefixes,
3794 concat (gcc_exec_tooldir_prefix, "lib",
3795 dir_separator_str, NULL),
3796 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
3799 tooldir_prefix = concat (standard_exec_prefix, spec_machine,
3800 dir_separator_str, spec_version,
3801 dir_separator_str, tooldir_prefix, NULL);
3804 add_prefix (&exec_prefixes,
3805 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3806 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 0);
3807 add_prefix (&startfile_prefixes,
3808 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3809 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
3811 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
3812 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
3813 then consider it to relocate with the rest of the GCC installation
3814 if GCC_EXEC_PREFIX is set.
3815 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
3816 if (target_system_root && gcc_exec_prefix)
3818 char *tmp_prefix = make_relative_prefix (argv[0],
3819 standard_bindir_prefix,
3820 target_system_root);
3821 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
3823 target_system_root = tmp_prefix;
3824 target_system_root_changed = 1;
3829 /* More prefixes are enabled in main, after we read the specs file
3830 and determine whether this is cross-compilation or not. */
3832 /* Then create the space for the vectors and scan again. */
3834 switches = xmalloc ((n_switches + 1) * sizeof (struct switchstr));
3835 infiles = xmalloc ((n_infiles + 1) * sizeof (struct infile));
3838 last_language_n_infiles = -1;
3840 /* This, time, copy the text of each switch and store a pointer
3841 to the copy in the vector of switches.
3842 Store all the infiles in their vector. */
3844 for (i = 1; i < argc; i++)
3846 /* Just skip the switches that were handled by the preceding loop. */
3847 #ifdef MODIFY_TARGET_NAME
3848 is_modify_target_name = 0;
3850 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3851 if (! strcmp (argv[i], modify_target[j].sw))
3852 is_modify_target_name = 1;
3854 if (is_modify_target_name)
3858 if (! strncmp (argv[i], "-Wa,", 4))
3860 else if (! strncmp (argv[i], "-Wp,", 4))
3862 else if (! strcmp (argv[i], "-pass-exit-codes"))
3864 else if (! strcmp (argv[i], "-print-search-dirs"))
3866 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3868 else if (! strncmp (argv[i], "-print-file-name=", 17))
3870 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3872 else if (! strcmp (argv[i], "-print-multi-lib"))
3874 else if (! strcmp (argv[i], "-print-multi-directory"))
3876 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3878 else if (! strcmp (argv[i], "-ftarget-help"))
3880 else if (! strcmp (argv[i], "-fhelp"))
3882 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3884 /* Compensate for the +e options to the C++ front-end;
3885 they're there simply for cfront call-compatibility. We do
3886 some magic in default_compilers to pass them down properly.
3887 Note we deliberately start at the `+' here, to avoid passing
3888 -e0 or -e1 down into the linker. */
3889 switches[n_switches].part1 = &argv[i][0];
3890 switches[n_switches].args = 0;
3891 switches[n_switches].live_cond = SWITCH_OK;
3892 switches[n_switches].validated = 0;
3895 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3898 /* Split the argument at commas. */
3900 for (j = 4; argv[i][j]; j++)
3901 if (argv[i][j] == ',')
3903 infiles[n_infiles].language = "*";
3904 infiles[n_infiles++].name
3905 = save_string (argv[i] + prev, j - prev);
3908 /* Record the part after the last comma. */
3909 infiles[n_infiles].language = "*";
3910 infiles[n_infiles++].name = argv[i] + prev;
3912 else if (strcmp (argv[i], "-Xlinker") == 0)
3914 infiles[n_infiles].language = "*";
3915 infiles[n_infiles++].name = argv[++i];
3917 else if (strcmp (argv[i], "-Xassembler") == 0)
3919 infiles[n_infiles].language = "*";
3920 infiles[n_infiles++].name = argv[++i];
3922 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3924 infiles[n_infiles].language = "*";
3925 infiles[n_infiles++].name = argv[++i];
3927 else if (strcmp (argv[i], "-l") == 0)
3928 { /* POSIX allows separation of -l and the lib arg;
3929 canonicalize by concatenating -l with its arg */
3930 infiles[n_infiles].language = "*";
3931 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL);
3933 else if (strncmp (argv[i], "-l", 2) == 0)
3935 infiles[n_infiles].language = "*";
3936 infiles[n_infiles++].name = argv[i];
3938 else if (strcmp (argv[i], "-specs") == 0)
3940 else if (strncmp (argv[i], "-specs=", 7) == 0)
3942 else if (strcmp (argv[i], "-time") == 0)
3944 else if (strcmp (argv[i], "-###") == 0)
3946 else if (argv[i][0] == '-' && argv[i][1] != 0)
3948 const char *p = &argv[i][1];
3953 if (p[1] == 0 && i + 1 == argc)
3954 fatal ("argument to `-x' is missing");
3956 spec_lang = argv[++i];
3959 if (! strcmp (spec_lang, "none"))
3960 /* Suppress the warning if -xnone comes after the last input
3961 file, because alternate command interfaces like g++ might
3962 find it useful to place -xnone after each input file. */
3965 last_language_n_infiles = n_infiles;
3968 switches[n_switches].part1 = p;
3969 /* Deal with option arguments in separate argv elements. */
3970 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
3971 || WORD_SWITCH_TAKES_ARG (p))
3974 int n_args = WORD_SWITCH_TAKES_ARG (p);
3978 /* Count only the option arguments in separate argv elements. */
3979 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
3981 if (i + n_args >= argc)
3982 fatal ("argument to `-%s' is missing", p);
3983 switches[n_switches].args
3984 = xmalloc ((n_args + 1) * sizeof(const char *));
3986 switches[n_switches].args[j++] = argv[++i];
3987 /* Null-terminate the vector. */
3988 switches[n_switches].args[j] = 0;
3990 else if (strchr (switches_need_spaces, c))
3992 /* On some systems, ld cannot handle some options without
3993 a space. So split the option from its argument. */
3994 char *part1 = xmalloc (2);
3998 switches[n_switches].part1 = part1;
3999 switches[n_switches].args = xmalloc (2 * sizeof (const char *));
4000 switches[n_switches].args[0] = xstrdup (p+1);
4001 switches[n_switches].args[1] = 0;
4004 switches[n_switches].args = 0;
4006 switches[n_switches].live_cond = SWITCH_OK;
4007 switches[n_switches].validated = 0;
4008 switches[n_switches].ordering = 0;
4009 /* These are always valid, since gcc.c itself understands them. */
4010 if (!strcmp (p, "save-temps")
4011 || !strcmp (p, "static-libgcc")
4012 || !strcmp (p, "shared-libgcc")
4013 || !strcmp (p, "pipe"))
4014 switches[n_switches].validated = 1;
4017 char ch = switches[n_switches].part1[0];
4019 switches[n_switches].validated = 1;
4025 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4026 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
4029 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
4031 perror_with_name (argv[i]);
4036 infiles[n_infiles].language = spec_lang;
4037 infiles[n_infiles++].name = argv[i];
4042 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4043 error ("warning: `-x %s' after last input file has no effect", spec_lang);
4045 /* Ensure we only invoke each subprocess once. */
4046 if (target_help_flag || print_help_list)
4050 /* Create a dummy input file, so that we can pass --target-help on to
4051 the various sub-processes. */
4052 infiles[0].language = "c";
4053 infiles[0].name = "help-dummy";
4055 if (target_help_flag)
4057 switches[n_switches].part1 = "--target-help";
4058 switches[n_switches].args = 0;
4059 switches[n_switches].live_cond = SWITCH_OK;
4060 switches[n_switches].validated = 0;
4065 if (print_help_list)
4067 switches[n_switches].part1 = "--help";
4068 switches[n_switches].args = 0;
4069 switches[n_switches].live_cond = SWITCH_OK;
4070 switches[n_switches].validated = 0;
4076 switches[n_switches].part1 = 0;
4077 infiles[n_infiles].name = 0;
4080 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4081 and place that in the environment. */
4084 set_collect_gcc_options (void)
4089 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4091 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4092 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4095 for (i = 0; (int) i < n_switches; i++)
4097 const char *const *args;
4100 obstack_grow (&collect_obstack, " ", 1);
4104 /* Ignore elided switches. */
4105 if (switches[i].live_cond == SWITCH_IGNORE)
4108 obstack_grow (&collect_obstack, "'-", 2);
4109 q = switches[i].part1;
4110 while ((p = strchr (q, '\'')))
4112 obstack_grow (&collect_obstack, q, p - q);
4113 obstack_grow (&collect_obstack, "'\\''", 4);
4116 obstack_grow (&collect_obstack, q, strlen (q));
4117 obstack_grow (&collect_obstack, "'", 1);
4119 for (args = switches[i].args; args && *args; args++)
4121 obstack_grow (&collect_obstack, " '", 2);
4123 while ((p = strchr (q, '\'')))
4125 obstack_grow (&collect_obstack, q, p - q);
4126 obstack_grow (&collect_obstack, "'\\''", 4);
4129 obstack_grow (&collect_obstack, q, strlen (q));
4130 obstack_grow (&collect_obstack, "'", 1);
4133 obstack_grow (&collect_obstack, "\0", 1);
4134 putenv (obstack_finish (&collect_obstack));
4137 /* Process a spec string, accumulating and running commands. */
4139 /* These variables describe the input file name.
4140 input_file_number is the index on outfiles of this file,
4141 so that the output file name can be stored for later use by %o.
4142 input_basename is the start of the part of the input file
4143 sans all directory names, and basename_length is the number
4144 of characters starting there excluding the suffix .c or whatever. */
4146 static const char *input_filename;
4147 static int input_file_number;
4148 size_t input_filename_length;
4149 static int basename_length;
4150 static int suffixed_basename_length;
4151 static const char *input_basename;
4152 static const char *input_suffix;
4153 static struct stat input_stat;
4154 static int input_stat_set;
4156 /* The compiler used to process the current input file. */
4157 static struct compiler *input_file_compiler;
4159 /* These are variables used within do_spec and do_spec_1. */
4161 /* Nonzero if an arg has been started and not yet terminated
4162 (with space, tab or newline). */
4163 static int arg_going;
4165 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4166 is a temporary file name. */
4167 static int delete_this_arg;
4169 /* Nonzero means %w has been seen; the next arg to be terminated
4170 is the output file name of this compilation. */
4171 static int this_is_output_file;
4173 /* Nonzero means %s has been seen; the next arg to be terminated
4174 is the name of a library file and we should try the standard
4175 search dirs for it. */
4176 static int this_is_library_file;
4178 /* Nonzero means that the input of this command is coming from a pipe. */
4179 static int input_from_pipe;
4181 /* Nonnull means substitute this for any suffix when outputting a switches
4183 static const char *suffix_subst;
4185 /* Process the spec SPEC and run the commands specified therein.
4186 Returns 0 if the spec is successfully processed; -1 if failed. */
4189 do_spec (const char *spec)
4193 value = do_spec_2 (spec);
4195 /* Force out any unfinished command.
4196 If -pipe, this forces out the last command if it ended in `|'. */
4199 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4202 set_collect_gcc_options ();
4204 if (argbuf_index > 0)
4212 do_spec_2 (const char *spec)
4219 delete_this_arg = 0;
4220 this_is_output_file = 0;
4221 this_is_library_file = 0;
4222 input_from_pipe = 0;
4223 suffix_subst = NULL;
4225 result = do_spec_1 (spec, 0, NULL);
4227 /* End any pending argument. */
4230 obstack_1grow (&obstack, 0);
4231 string = obstack_finish (&obstack);
4232 if (this_is_library_file)
4233 string = find_file (string);
4234 store_arg (string, delete_this_arg, this_is_output_file);
4235 if (this_is_output_file)
4236 outfiles[input_file_number] = string;
4244 /* Process the given spec string and add any new options to the end
4245 of the switches/n_switches array. */
4248 do_option_spec (const char *name, const char *spec)
4250 unsigned int i, value_count, value_len;
4251 const char *p, *q, *value;
4252 char *tmp_spec, *tmp_spec_p;
4254 if (configure_default_options[0].name == NULL)
4257 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4258 if (strcmp (configure_default_options[i].name, name) == 0)
4260 if (i == ARRAY_SIZE (configure_default_options))
4263 value = configure_default_options[i].value;
4264 value_len = strlen (value);
4266 /* Compute the size of the final spec. */
4269 while ((p = strstr (p, "%(VALUE)")) != NULL)
4275 /* Replace each %(VALUE) by the specified value. */
4276 tmp_spec = alloca (strlen (spec) + 1
4277 + value_count * (value_len - strlen ("%(VALUE)")));
4278 tmp_spec_p = tmp_spec;
4280 while ((p = strstr (q, "%(VALUE)")) != NULL)
4282 memcpy (tmp_spec_p, q, p - q);
4283 tmp_spec_p = tmp_spec_p + (p - q);
4284 memcpy (tmp_spec_p, value, value_len);
4285 tmp_spec_p += value_len;
4286 q = p + strlen ("%(VALUE)");
4288 strcpy (tmp_spec_p, q);
4290 do_self_spec (tmp_spec);
4293 /* Process the given spec string and add any new options to the end
4294 of the switches/n_switches array. */
4297 do_self_spec (const char *spec)
4300 do_spec_1 (" ", 0, NULL);
4302 if (argbuf_index > 0)
4307 n_switches += argbuf_index;
4308 switches = xrealloc (switches,
4309 sizeof (struct switchstr) * (n_switches + 1));
4311 switches[n_switches] = switches[first];
4312 for (i = 0; i < argbuf_index; i++)
4314 struct switchstr *sw;
4316 /* Each switch should start with '-'. */
4317 if (argbuf[i][0] != '-')
4320 sw = &switches[i + first];
4321 sw->part1 = &argbuf[i][1];
4323 sw->live_cond = SWITCH_OK;
4330 /* Process the sub-spec SPEC as a portion of a larger spec.
4331 This is like processing a whole spec except that we do
4332 not initialize at the beginning and we do not supply a
4333 newline by default at the end.
4334 INSWITCH nonzero means don't process %-sequences in SPEC;
4335 in this case, % is treated as an ordinary character.
4336 This is used while substituting switches.
4337 INSWITCH nonzero also causes SPC not to terminate an argument.
4339 Value is zero unless a line was finished
4340 and the command on that line reported an error. */
4343 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4345 const char *p = spec;
4352 /* If substituting a switch, treat all chars like letters.
4353 Otherwise, NL, SPC, TAB and % are special. */
4354 switch (inswitch ? 'a' : c)
4357 /* End of line: finish any pending argument,
4358 then run the pending command if one has been started. */
4361 obstack_1grow (&obstack, 0);
4362 string = obstack_finish (&obstack);
4363 if (this_is_library_file)
4364 string = find_file (string);
4365 store_arg (string, delete_this_arg, this_is_output_file);
4366 if (this_is_output_file)
4367 outfiles[input_file_number] = string;
4371 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4373 /* A `|' before the newline means use a pipe here,
4374 but only if -pipe was specified.
4375 Otherwise, execute now and don't pass the `|' as an arg. */
4378 input_from_pipe = 1;
4385 set_collect_gcc_options ();
4387 if (argbuf_index > 0)
4393 /* Reinitialize for a new command, and for a new argument. */
4396 delete_this_arg = 0;
4397 this_is_output_file = 0;
4398 this_is_library_file = 0;
4399 input_from_pipe = 0;
4403 /* End any pending argument. */
4406 obstack_1grow (&obstack, 0);
4407 string = obstack_finish (&obstack);
4408 if (this_is_library_file)
4409 string = find_file (string);
4410 store_arg (string, delete_this_arg, this_is_output_file);
4411 if (this_is_output_file)
4412 outfiles[input_file_number] = string;
4416 obstack_1grow (&obstack, c);
4422 /* Space or tab ends an argument if one is pending. */
4425 obstack_1grow (&obstack, 0);
4426 string = obstack_finish (&obstack);
4427 if (this_is_library_file)
4428 string = find_file (string);
4429 store_arg (string, delete_this_arg, this_is_output_file);
4430 if (this_is_output_file)
4431 outfiles[input_file_number] = string;
4433 /* Reinitialize for a new argument. */
4435 delete_this_arg = 0;
4436 this_is_output_file = 0;
4437 this_is_library_file = 0;
4444 fatal ("invalid specification! Bug in cc");
4447 obstack_grow (&obstack, input_basename, basename_length);
4452 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4457 delete_this_arg = 2;
4460 /* Dump out the directories specified with LIBRARY_PATH,
4461 followed by the absolute directories
4462 that we search for startfiles. */
4465 struct prefix_list *pl = startfile_prefixes.plist;
4466 size_t bufsize = 100;
4467 char *buffer = xmalloc (bufsize);
4470 for (; pl; pl = pl->next)
4472 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4473 /* Used on systems which record the specified -L dirs
4474 and use them to search for dynamic linking. */
4475 /* Relative directories always come from -B,
4476 and it is better not to use them for searching
4477 at run time. In particular, stage1 loses. */
4478 if (!IS_ABSOLUTE_PATH (pl->prefix))
4481 /* Try subdirectory if there is one. */
4482 if (multilib_dir != NULL
4483 || (pl->os_multilib && multilib_os_dir != NULL))
4485 const char *multi_dir;
4487 multi_dir = pl->os_multilib ? multilib_os_dir
4489 if (machine_suffix && multilib_dir)
4491 if (strlen (pl->prefix) + strlen (machine_suffix)
4493 bufsize = (strlen (pl->prefix)
4494 + strlen (machine_suffix)) * 2 + 1;
4495 buffer = xrealloc (buffer, bufsize);
4496 strcpy (buffer, pl->prefix);
4497 strcat (buffer, machine_suffix);
4498 if (is_directory (buffer, multilib_dir, 1))
4500 do_spec_1 ("-L", 0, NULL);
4501 #ifdef SPACE_AFTER_L_OPTION
4502 do_spec_1 (" ", 0, NULL);
4504 do_spec_1 (buffer, 1, NULL);
4505 do_spec_1 (multilib_dir, 1, NULL);
4506 /* Make this a separate argument. */
4507 do_spec_1 (" ", 0, NULL);
4510 if (!pl->require_machine_suffix)
4512 if (is_directory (pl->prefix, multi_dir, 1))
4514 do_spec_1 ("-L", 0, NULL);
4515 #ifdef SPACE_AFTER_L_OPTION
4516 do_spec_1 (" ", 0, NULL);
4518 do_spec_1 (pl->prefix, 1, NULL);
4519 do_spec_1 (multi_dir, 1, NULL);
4520 /* Make this a separate argument. */
4521 do_spec_1 (" ", 0, NULL);
4527 if (is_directory (pl->prefix, machine_suffix, 1))
4529 do_spec_1 ("-L", 0, NULL);
4530 #ifdef SPACE_AFTER_L_OPTION
4531 do_spec_1 (" ", 0, NULL);
4533 do_spec_1 (pl->prefix, 1, NULL);
4534 /* Remove slash from machine_suffix. */
4535 if (strlen (machine_suffix) >= bufsize)
4536 bufsize = strlen (machine_suffix) * 2 + 1;
4537 buffer = xrealloc (buffer, bufsize);
4538 strcpy (buffer, machine_suffix);
4539 idx = strlen (buffer);
4540 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4541 buffer[idx - 1] = 0;
4542 do_spec_1 (buffer, 1, NULL);
4543 /* Make this a separate argument. */
4544 do_spec_1 (" ", 0, NULL);
4547 if (!pl->require_machine_suffix)
4549 if (is_directory (pl->prefix, "", 1))
4551 do_spec_1 ("-L", 0, NULL);
4552 #ifdef SPACE_AFTER_L_OPTION
4553 do_spec_1 (" ", 0, NULL);
4555 /* Remove slash from pl->prefix. */
4556 if (strlen (pl->prefix) >= bufsize)
4557 bufsize = strlen (pl->prefix) * 2 + 1;
4558 buffer = xrealloc (buffer, bufsize);
4559 strcpy (buffer, pl->prefix);
4560 idx = strlen (buffer);
4561 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4562 buffer[idx - 1] = 0;
4563 do_spec_1 (buffer, 1, NULL);
4564 /* Make this a separate argument. */
4565 do_spec_1 (" ", 0, NULL);
4574 /* %efoo means report an error with `foo' as error message
4575 and don't execute any more commands for this file. */
4579 while (*p != 0 && *p != '\n')
4581 buf = alloca (p - q + 1);
4582 strncpy (buf, q, p - q);
4589 /* %nfoo means report a notice with `foo' on stderr. */
4593 while (*p != 0 && *p != '\n')
4595 buf = alloca (p - q + 1);
4596 strncpy (buf, q, p - q);
4598 notice ("%s\n", buf);
4608 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4609 defined, and it is not a directory, and it is
4610 writable, use it. Otherwise, treat this like any
4611 other temporary file. */
4613 if ((!save_temps_flag)
4614 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4615 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4617 obstack_grow (&obstack, HOST_BIT_BUCKET,
4618 strlen (HOST_BIT_BUCKET));
4619 delete_this_arg = 0;
4624 goto create_temp_file;
4628 obstack_1grow (&obstack, '-');
4629 delete_this_arg = 0;
4632 /* consume suffix */
4633 while (*p == '.' || ISALPHA ((unsigned char) *p))
4635 if (p[0] == '%' && p[1] == 'O')
4640 goto create_temp_file;
4644 /* consume suffix */
4645 while (*p == '.' || ISALPHA ((unsigned char) *p))
4647 if (p[0] == '%' && p[1] == 'O')
4652 goto create_temp_file;
4658 struct temp_name *t;
4660 const char *suffix = p;
4661 char *saved_suffix = NULL;
4663 while (*p == '.' || ISALPHA ((unsigned char) *p))
4665 suffix_length = p - suffix;
4666 if (p[0] == '%' && p[1] == 'O')
4669 /* We don't support extra suffix characters after %O. */
4670 if (*p == '.' || ISALPHA ((unsigned char) *p))
4672 if (suffix_length == 0)
4673 suffix = TARGET_OBJECT_SUFFIX;
4677 = xmalloc (suffix_length
4678 + strlen (TARGET_OBJECT_SUFFIX));
4679 strncpy (saved_suffix, suffix, suffix_length);
4680 strcpy (saved_suffix + suffix_length,
4681 TARGET_OBJECT_SUFFIX);
4683 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4686 /* If the input_filename has the same suffix specified
4687 for the %g, %u, or %U, and -save-temps is specified,
4688 we could end up using that file as an intermediate
4689 thus clobbering the user's source file (.e.g.,
4690 gcc -save-temps foo.s would clobber foo.s with the
4691 output of cpp0). So check for this condition and
4692 generate a temp file as the intermediate. */
4694 if (save_temps_flag)
4696 temp_filename_length = basename_length + suffix_length;
4697 temp_filename = alloca (temp_filename_length + 1);
4698 strncpy ((char *) temp_filename, input_basename, basename_length);
4699 strncpy ((char *) temp_filename + basename_length, suffix,
4701 *((char *) temp_filename + temp_filename_length) = '\0';
4702 if (strcmp (temp_filename, input_filename) != 0)
4704 struct stat st_temp;
4706 /* Note, set_input() resets input_stat_set to 0. */
4707 if (input_stat_set == 0)
4709 input_stat_set = stat (input_filename, &input_stat);
4710 if (input_stat_set >= 0)
4714 /* If we have the stat for the input_filename
4715 and we can do the stat for the temp_filename
4716 then the they could still refer to the same
4717 file if st_dev/st_ino's are the same. */
4719 if (input_stat_set != 1
4720 || stat (temp_filename, &st_temp) < 0
4721 || input_stat.st_dev != st_temp.st_dev
4722 || input_stat.st_ino != st_temp.st_ino)
4724 temp_filename = save_string (temp_filename,
4725 temp_filename_length + 1);
4726 obstack_grow (&obstack, temp_filename,
4727 temp_filename_length);
4729 delete_this_arg = 0;
4735 /* See if we already have an association of %g/%u/%U and
4737 for (t = temp_names; t; t = t->next)
4738 if (t->length == suffix_length
4739 && strncmp (t->suffix, suffix, suffix_length) == 0
4740 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
4743 /* Make a new association if needed. %u and %j
4745 if (t == 0 || c == 'u' || c == 'j')
4749 t = xmalloc (sizeof (struct temp_name));
4750 t->next = temp_names;
4753 t->length = suffix_length;
4756 t->suffix = saved_suffix;
4757 saved_suffix = NULL;
4760 t->suffix = save_string (suffix, suffix_length);
4761 t->unique = (c == 'u' || c == 'U' || c == 'j');
4762 temp_filename = make_temp_file (t->suffix);
4763 temp_filename_length = strlen (temp_filename);
4764 t->filename = temp_filename;
4765 t->filename_length = temp_filename_length;
4769 free (saved_suffix);
4771 obstack_grow (&obstack, t->filename, t->filename_length);
4772 delete_this_arg = 1;
4780 for (i = 0; (int) i < n_infiles; i++)
4781 store_arg (infiles[i].name, 0, 0);
4785 obstack_grow (&obstack, input_filename, input_filename_length);
4792 struct prefix_list *pl = include_prefixes.plist;
4794 if (gcc_exec_prefix)
4796 do_spec_1 ("-iprefix", 1, NULL);
4797 /* Make this a separate argument. */
4798 do_spec_1 (" ", 0, NULL);
4799 do_spec_1 (gcc_exec_prefix, 1, NULL);
4800 do_spec_1 (" ", 0, NULL);
4803 if (target_system_root_changed ||
4804 (target_system_root && target_sysroot_hdrs_suffix))
4806 do_spec_1 ("-isysroot", 1, NULL);
4807 /* Make this a separate argument. */
4808 do_spec_1 (" ", 0, NULL);
4809 do_spec_1 (target_system_root, 1, NULL);
4810 if (target_sysroot_hdrs_suffix)
4811 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
4812 do_spec_1 (" ", 0, NULL);
4815 for (; pl; pl = pl->next)
4817 do_spec_1 ("-isystem", 1, NULL);
4818 /* Make this a separate argument. */
4819 do_spec_1 (" ", 0, NULL);
4820 do_spec_1 (pl->prefix, 1, NULL);
4821 do_spec_1 (" ", 0, NULL);
4828 int max = n_infiles;
4829 max += lang_specific_extra_outfiles;
4831 for (i = 0; i < max; i++)
4833 store_arg (outfiles[i], 0, 0);
4838 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4843 this_is_library_file = 1;
4847 outfiles[input_file_number] = NULL;
4851 this_is_output_file = 1;
4856 int cur_index = argbuf_index;
4857 /* Handle the {...} following the %W. */
4860 p = handle_braces (p + 1);
4863 /* End any pending argument. */
4866 obstack_1grow (&obstack, 0);
4867 string = obstack_finish (&obstack);
4868 if (this_is_library_file)
4869 string = find_file (string);
4870 store_arg (string, delete_this_arg, this_is_output_file);
4871 if (this_is_output_file)
4872 outfiles[input_file_number] = string;
4875 /* If any args were output, mark the last one for deletion
4877 if (argbuf_index != cur_index)
4878 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
4882 /* %x{OPTION} records OPTION for %X to output. */
4888 /* Skip past the option value and make a copy. */
4893 string = save_string (p1 + 1, p - p1 - 2);
4895 /* See if we already recorded this option. */
4896 for (i = 0; i < n_linker_options; i++)
4897 if (! strcmp (string, linker_options[i]))
4903 /* This option is new; add it. */
4904 add_linker_option (string, strlen (string));
4908 /* Dump out the options accumulated previously using %x. */
4910 for (i = 0; i < n_linker_options; i++)
4912 do_spec_1 (linker_options[i], 1, NULL);
4913 /* Make each accumulated option a separate argument. */
4914 do_spec_1 (" ", 0, NULL);
4918 /* Dump out the options accumulated previously using -Wa,. */
4920 for (i = 0; i < n_assembler_options; i++)
4922 do_spec_1 (assembler_options[i], 1, NULL);
4923 /* Make each accumulated option a separate argument. */
4924 do_spec_1 (" ", 0, NULL);
4928 /* Dump out the options accumulated previously using -Wp,. */
4930 for (i = 0; i < n_preprocessor_options; i++)
4932 do_spec_1 (preprocessor_options[i], 1, NULL);
4933 /* Make each accumulated option a separate argument. */
4934 do_spec_1 (" ", 0, NULL);
4938 /* Here are digits and numbers that just process
4939 a certain constant string as a spec. */
4942 value = do_spec_1 (cc1_spec, 0, NULL);
4948 value = do_spec_1 (cc1plus_spec, 0, NULL);
4954 value = do_spec_1 (asm_spec, 0, NULL);
4960 value = do_spec_1 (asm_final_spec, 0, NULL);
4967 const char *const spec
4968 = (input_file_compiler->cpp_spec
4969 ? input_file_compiler->cpp_spec
4971 value = do_spec_1 (spec, 0, NULL);
4978 value = do_spec_1 (endfile_spec, 0, NULL);
4984 value = do_spec_1 (link_spec, 0, NULL);
4990 value = do_spec_1 (lib_spec, 0, NULL);
4996 value = do_spec_1 (libgcc_spec, 0, NULL);
5002 if (multilib_dir && strcmp (multilib_dir, ".") != 0)
5008 len = strlen (multilib_dir);
5009 obstack_blank (&obstack, len + 1);
5010 p = obstack_next_free (&obstack) - (len + 1);
5013 for (q = multilib_dir; *q ; ++q, ++p)
5014 *p = (IS_DIR_SEPARATOR (*q) ? '_' : *q);
5019 /* We assume there is a directory
5020 separator at the end of this string. */
5021 if (target_system_root)
5023 obstack_grow (&obstack, target_system_root,
5024 strlen (target_system_root));
5025 if (target_sysroot_suffix)
5026 obstack_grow (&obstack, target_sysroot_suffix,
5027 strlen (target_sysroot_suffix));
5032 value = do_spec_1 (startfile_spec, 0, NULL);
5037 /* Here we define characters other than letters and digits. */
5040 p = handle_braces (p);
5046 p = handle_spec_function (p);
5052 obstack_1grow (&obstack, '%');
5059 while (p[len] && p[len] != ' ' && p[len] != '%')
5061 suffix_subst = save_string (p - 1, len + 1);
5066 /* Henceforth ignore the option(s) matching the pattern
5071 int have_wildcard = 0;
5074 while (p[len] && p[len] != ' ' && p[len] != '\t')
5077 if (p[len-1] == '*')
5080 for (i = 0; i < n_switches; i++)
5081 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5082 && (have_wildcard || switches[i].part1[len] == '\0'))
5084 switches[i].live_cond = SWITCH_IGNORE;
5085 switches[i].validated = 1;
5093 if (soft_matched_part)
5095 do_spec_1 (soft_matched_part, 1, NULL);
5096 do_spec_1 (" ", 0, NULL);
5099 /* Catch the case where a spec string contains something like
5100 '%{foo:%*}'. ie there is no * in the pattern on the left
5101 hand side of the :. */
5102 error ("spec failure: '%%*' has not been initialized by pattern match");
5105 /* Process a string found as the value of a spec given by name.
5106 This feature allows individual machine descriptions
5107 to add and use their own specs.
5108 %[...] modifies -D options the way %P does;
5109 %(...) uses the spec unmodified. */
5111 error ("warning: use of obsolete %%[ operator in specs");
5114 const char *name = p;
5115 struct spec_list *sl;
5118 /* The string after the S/P is the name of a spec that is to be
5120 while (*p && *p != ')' && *p != ']')
5123 /* See if it's in the list. */
5124 for (len = p - name, sl = specs; sl; sl = sl->next)
5125 if (sl->name_len == len && !strncmp (sl->name, name, len))
5127 name = *(sl->ptr_spec);
5129 notice ("Processing spec %c%s%c, which is '%s'\n",
5130 c, sl->name, (c == '(') ? ')' : ']', name);
5139 value = do_spec_1 (name, 0, NULL);
5145 char *x = alloca (strlen (name) * 2 + 1);
5147 const char *y = name;
5150 /* Copy all of NAME into BUF, but put __ after
5151 every -D and at the end of each arg. */
5154 if (! strncmp (y, "-D", 2))
5165 && (*y == ' ' || *y == '\t' || *y == '='
5166 || *y == '}' || *y == 0))
5179 value = do_spec_1 (buf, 0, NULL);
5185 /* Discard the closing paren or bracket. */
5192 error ("spec failure: unrecognized spec option '%c'", c);
5198 /* Backslash: treat next character as ordinary. */
5203 /* Ordinary character: put it into the current argument. */
5204 obstack_1grow (&obstack, c);
5208 /* End of string. If we are processing a spec function, we need to
5209 end any pending argument. */
5210 if (processing_spec_function && arg_going)
5212 obstack_1grow (&obstack, 0);
5213 string = obstack_finish (&obstack);
5214 if (this_is_library_file)
5215 string = find_file (string);
5216 store_arg (string, delete_this_arg, this_is_output_file);
5217 if (this_is_output_file)
5218 outfiles[input_file_number] = string;
5225 /* Look up a spec function. */
5227 static const struct spec_function *
5228 lookup_spec_function (const char *name)
5230 static const struct spec_function * const spec_function_tables[] =
5232 static_spec_functions,
5233 lang_specific_spec_functions,
5235 const struct spec_function *sf;
5238 for (i = 0; i < ARRAY_SIZE (spec_function_tables); i++)
5240 for (sf = spec_function_tables[i]; sf->name != NULL; sf++)
5241 if (strcmp (sf->name, name) == 0)
5248 /* Evaluate a spec function. */
5251 eval_spec_function (const char *func, const char *args)
5253 const struct spec_function *sf;
5254 const char *funcval;
5256 /* Saved spec processing context. */
5257 int save_argbuf_index;
5258 int save_argbuf_length;
5259 const char **save_argbuf;
5262 int save_delete_this_arg;
5263 int save_this_is_output_file;
5264 int save_this_is_library_file;
5265 int save_input_from_pipe;
5266 const char *save_suffix_subst;
5269 sf = lookup_spec_function (func);
5271 fatal ("unknown spec function `%s'", func);
5273 /* Push the spec processing context. */
5274 save_argbuf_index = argbuf_index;
5275 save_argbuf_length = argbuf_length;
5276 save_argbuf = argbuf;
5278 save_arg_going = arg_going;
5279 save_delete_this_arg = delete_this_arg;
5280 save_this_is_output_file = this_is_output_file;
5281 save_this_is_library_file = this_is_library_file;
5282 save_input_from_pipe = input_from_pipe;
5283 save_suffix_subst = suffix_subst;
5285 /* Create a new spec processing context, and build the function
5289 if (do_spec_2 (args) < 0)
5290 fatal ("error in args to spec function `%s'", func);
5292 /* argbuf_index is an index for the next argument to be inserted, and
5293 so contains the count of the args already inserted. */
5295 funcval = (*sf->func) (argbuf_index, argbuf);
5297 /* Pop the spec processing context. */
5298 argbuf_index = save_argbuf_index;
5299 argbuf_length = save_argbuf_length;
5301 argbuf = save_argbuf;
5303 arg_going = save_arg_going;
5304 delete_this_arg = save_delete_this_arg;
5305 this_is_output_file = save_this_is_output_file;
5306 this_is_library_file = save_this_is_library_file;
5307 input_from_pipe = save_input_from_pipe;
5308 suffix_subst = save_suffix_subst;
5313 /* Handle a spec function call of the form:
5317 ARGS is processed as a spec in a separate context and split into an
5318 argument vector in the normal fashion. The function returns a string
5319 containing a spec which we then process in the caller's context, or
5320 NULL if no processing is required. */
5323 handle_spec_function (const char *p)
5326 const char *endp, *funcval;
5329 processing_spec_function++;
5331 /* Get the function name. */
5332 for (endp = p; *endp != '\0'; endp++)
5334 if (*endp == '(') /* ) */
5336 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5337 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5338 fatal ("malformed spec function name");
5340 if (*endp != '(') /* ) */
5341 fatal ("no arguments for spec function");
5342 func = save_string (p, endp - p);
5345 /* Get the arguments. */
5346 for (count = 0; *endp != '\0'; endp++)
5355 else if (*endp == '(') /* ) */
5360 fatal ("malformed spec function arguments");
5361 args = save_string (p, endp - p);
5364 /* p now points to just past the end of the spec function expression. */
5366 funcval = eval_spec_function (func, args);
5367 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5373 processing_spec_function--;
5378 /* Inline subroutine of handle_braces. Returns true if the current
5379 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5381 input_suffix_matches (const char *atom, const char *end_atom)
5383 return (input_suffix
5384 && !strncmp (input_suffix, atom, end_atom - atom)
5385 && input_suffix[end_atom - atom] == '\0');
5388 /* Inline subroutine of handle_braces. Returns true if a switch
5389 matching the atom bracketed by ATOM and END_ATOM appeared on the
5392 switch_matches (const char *atom, const char *end_atom, int starred)
5395 int len = end_atom - atom;
5396 int plen = starred ? len : -1;
5398 for (i = 0; i < n_switches; i++)
5399 if (!strncmp (switches[i].part1, atom, len)
5400 && (starred || switches[i].part1[len] == '\0')
5401 && check_live_switch (i, plen))
5407 /* Inline subroutine of handle_braces. Mark all of the switches which
5408 match ATOM (extends to END_ATOM; STARRED indicates whether there
5409 was a star after the atom) for later processing. */
5411 mark_matching_switches (const char *atom, const char *end_atom, int starred)
5414 int len = end_atom - atom;
5415 int plen = starred ? len : -1;
5417 for (i = 0; i < n_switches; i++)
5418 if (!strncmp (switches[i].part1, atom, len)
5419 && (starred || switches[i].part1[len] == '\0')
5420 && check_live_switch (i, plen))
5421 switches[i].ordering = 1;
5424 /* Inline subroutine of handle_braces. Process all the currently
5425 marked switches through give_switch, and clear the marks. */
5427 process_marked_switches (void)
5431 for (i = 0; i < n_switches; i++)
5432 if (switches[i].ordering == 1)
5434 switches[i].ordering = 0;
5439 /* Handle a %{ ... } construct. P points just inside the leading {.
5440 Returns a pointer one past the end of the brace block, or 0
5441 if we call do_spec_1 and that returns -1. */
5444 handle_braces (const char *p)
5446 const char *atom, *end_atom;
5447 const char *d_atom = NULL, *d_end_atom = NULL;
5454 bool a_must_be_last = false;
5455 bool ordered_set = false;
5456 bool disjunct_set = false;
5457 bool disj_matched = false;
5458 bool disj_starred = true;
5459 bool n_way_choice = false;
5460 bool n_way_matched = false;
5462 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5469 /* Scan one "atom" (S in the description above of %{}, possibly
5470 with !, ., or * modifiers). */
5471 a_matched = a_is_suffix = a_is_starred = a_is_negated = false;
5475 p++, a_is_negated = true;
5479 p++, a_is_suffix = true;
5482 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5483 || *p == ',' || *p == '.' || *p == '@')
5488 p++, a_is_starred = 1;
5491 if (*p == '&' || *p == '}')
5493 /* Substitute the switch(es) indicated by the current atom. */
5495 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5496 || atom == end_atom)
5499 mark_matching_switches (atom, end_atom, a_is_starred);
5502 process_marked_switches ();
5504 else if (*p == '|' || *p == ':')
5506 /* Substitute some text if the current atom appears as a switch
5508 disjunct_set = true;
5512 if (atom == end_atom)
5514 if (!n_way_choice || disj_matched || *p == '|'
5515 || a_is_negated || a_is_suffix || a_is_starred)
5518 /* An empty term may appear as the last choice of an
5519 N-way choice set; it means "otherwise". */
5520 a_must_be_last = true;
5521 disj_matched = !n_way_matched;
5522 disj_starred = false;
5526 if (a_is_suffix && a_is_starred)
5530 disj_starred = false;
5532 /* Don't bother testing this atom if we already have a
5534 if (!disj_matched && !n_way_matched)
5537 a_matched = input_suffix_matches (atom, end_atom);
5539 a_matched = switch_matches (atom, end_atom, a_is_starred);
5541 if (a_matched != a_is_negated)
5543 disj_matched = true;
5545 d_end_atom = end_atom;
5552 /* Found the body, that is, the text to substitute if the
5553 current disjunction matches. */
5554 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5555 disj_matched && !n_way_matched);
5559 /* If we have an N-way choice, reset state for the next
5563 n_way_choice = true;
5564 n_way_matched |= disj_matched;
5565 disj_matched = false;
5566 disj_starred = true;
5567 d_atom = d_end_atom = NULL;
5574 while (*p++ != '}');
5581 /* Subroutine of handle_braces. Scan and process a brace substitution body
5582 (X in the description of %{} syntax). P points one past the colon;
5583 ATOM and END_ATOM bracket the first atom which was found to be true
5584 (present) in the current disjunction; STARRED indicates whether all
5585 the atoms in the current disjunction were starred (for syntax validation);
5586 MATCHED indicates whether the disjunction matched or not, and therefore
5587 whether or not the body is to be processed through do_spec_1 or just
5588 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5592 process_brace_body (const char *p, const char *atom, const char *end_atom,
5593 int starred, int matched)
5595 const char *body, *end_body;
5596 unsigned int nesting_level;
5597 bool have_subst = false;
5599 /* Locate the closing } or ;, honoring nested braces.
5600 Trim trailing whitespace. */
5609 if (!--nesting_level)
5612 else if (*p == ';' && nesting_level == 1)
5614 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
5616 else if (*p == '\0')
5622 while (end_body[-1] == ' ' || end_body[-1] == '\t')
5625 if (have_subst && !starred)
5630 /* Copy the substitution body to permanent storage and execute it.
5631 If have_subst is false, this is a simple matter of running the
5632 body through do_spec_1... */
5633 char *string = save_string (body, end_body - body);
5636 if (do_spec_1 (string, 0, NULL) < 0)
5641 /* ... but if have_subst is true, we have to process the
5642 body once for each matching switch, with %* set to the
5643 variant part of the switch. */
5644 unsigned int hard_match_len = end_atom - atom;
5647 for (i = 0; i < n_switches; i++)
5648 if (!strncmp (switches[i].part1, atom, hard_match_len)
5649 && check_live_switch (i, hard_match_len))
5651 if (do_spec_1 (string, 0,
5652 &switches[i].part1[hard_match_len]) < 0)
5654 /* Pass any arguments this switch has. */
5656 suffix_subst = NULL;
5664 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5665 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5666 spec, or -1 if either exact match or %* is used.
5668 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5669 whose value does not begin with "no-" is obsoleted by the same value
5670 with the "no-", similarly for a switch with the "no-" prefix. */
5673 check_live_switch (int switchnum, int prefix_length)
5675 const char *name = switches[switchnum].part1;
5678 /* In the common case of {<at-most-one-letter>*}, a negating
5679 switch would always match, so ignore that case. We will just
5680 send the conflicting switches to the compiler phase. */
5681 if (prefix_length >= 0 && prefix_length <= 1)
5684 /* If we already processed this switch and determined if it was
5685 live or not, return our past determination. */
5686 if (switches[switchnum].live_cond != 0)
5687 return switches[switchnum].live_cond > 0;
5689 /* Now search for duplicate in a manner that depends on the name. */
5693 for (i = switchnum + 1; i < n_switches; i++)
5694 if (switches[i].part1[0] == 'O')
5696 switches[switchnum].validated = 1;
5697 switches[switchnum].live_cond = SWITCH_FALSE;
5702 case 'W': case 'f': case 'm':
5703 if (! strncmp (name + 1, "no-", 3))
5705 /* We have Xno-YYY, search for XYYY. */
5706 for (i = switchnum + 1; i < n_switches; i++)
5707 if (switches[i].part1[0] == name[0]
5708 && ! strcmp (&switches[i].part1[1], &name[4]))
5710 switches[switchnum].validated = 1;
5711 switches[switchnum].live_cond = SWITCH_FALSE;
5717 /* We have XYYY, search for Xno-YYY. */
5718 for (i = switchnum + 1; i < n_switches; i++)
5719 if (switches[i].part1[0] == name[0]
5720 && switches[i].part1[1] == 'n'
5721 && switches[i].part1[2] == 'o'
5722 && switches[i].part1[3] == '-'
5723 && !strcmp (&switches[i].part1[4], &name[1]))
5725 switches[switchnum].validated = 1;
5726 switches[switchnum].live_cond = SWITCH_FALSE;
5733 /* Otherwise the switch is live. */
5734 switches[switchnum].live_cond = SWITCH_LIVE;
5738 /* Pass a switch to the current accumulating command
5739 in the same form that we received it.
5740 SWITCHNUM identifies the switch; it is an index into
5741 the vector of switches gcc received, which is `switches'.
5742 This cannot fail since it never finishes a command line.
5744 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5747 give_switch (int switchnum, int omit_first_word)
5749 if (switches[switchnum].live_cond == SWITCH_IGNORE)
5752 if (!omit_first_word)
5754 do_spec_1 ("-", 0, NULL);
5755 do_spec_1 (switches[switchnum].part1, 1, NULL);
5758 if (switches[switchnum].args != 0)
5761 for (p = switches[switchnum].args; *p; p++)
5763 const char *arg = *p;
5765 do_spec_1 (" ", 0, NULL);
5768 unsigned length = strlen (arg);
5771 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5772 if (arg[length] == '.')
5774 ((char *)arg)[length] = 0;
5778 do_spec_1 (arg, 1, NULL);
5780 ((char *)arg)[length] = '.';
5781 do_spec_1 (suffix_subst, 1, NULL);
5784 do_spec_1 (arg, 1, NULL);
5788 do_spec_1 (" ", 0, NULL);
5789 switches[switchnum].validated = 1;
5792 /* Search for a file named NAME trying various prefixes including the
5793 user's -B prefix and some standard ones.
5794 Return the absolute file name found. If nothing is found, return NAME. */
5797 find_file (const char *name)
5801 /* Try multilib_dir if it is defined. */
5802 if (multilib_os_dir != NULL)
5804 newname = find_a_file (&startfile_prefixes, name, R_OK, 1);
5806 /* If we don't find it in the multi library dir, then fall
5807 through and look for it in the normal places. */
5808 if (newname != NULL)
5812 newname = find_a_file (&startfile_prefixes, name, R_OK, 0);
5813 return newname ? newname : name;
5816 /* Determine whether a directory exists. If LINKER, return 0 for
5817 certain fixed names not needed by the linker. If not LINKER, it is
5818 only important to return 0 if the host machine has a small ARG_MAX
5822 is_directory (const char *path1, const char *path2, int linker)
5824 int len1 = strlen (path1);
5825 int len2 = strlen (path2);
5826 char *path = alloca (3 + len1 + len2);
5830 #ifndef SMALL_ARG_MAX
5835 /* Construct the path from the two parts. Ensure the string ends with "/.".
5836 The resulting path will be a directory even if the given path is a
5838 memcpy (path, path1, len1);
5839 memcpy (path + len1, path2, len2);
5840 cp = path + len1 + len2;
5841 if (!IS_DIR_SEPARATOR (cp[-1]))
5842 *cp++ = DIR_SEPARATOR;
5846 /* Exclude directories that the linker is known to search. */
5849 && strcmp (path, concat (dir_separator_str, "lib",
5850 dir_separator_str, ".", NULL)) == 0)
5852 && strcmp (path, concat (dir_separator_str, "usr",
5853 dir_separator_str, "lib",
5854 dir_separator_str, ".", NULL)) == 0)))
5857 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5860 /* Set up the various global variables to indicate that we're processing
5861 the input file named FILENAME. */
5864 set_input (const char *filename)
5868 input_filename = filename;
5869 input_filename_length = strlen (input_filename);
5871 input_basename = input_filename;
5872 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
5873 /* Skip drive name so 'x:foo' is handled properly. */
5874 if (input_basename[1] == ':')
5875 input_basename += 2;
5877 for (p = input_basename; *p; p++)
5878 if (IS_DIR_SEPARATOR (*p))
5879 input_basename = p + 1;
5881 /* Find a suffix starting with the last period,
5882 and set basename_length to exclude that suffix. */
5883 basename_length = strlen (input_basename);
5884 suffixed_basename_length = basename_length;
5885 p = input_basename + basename_length;
5886 while (p != input_basename && *p != '.')
5888 if (*p == '.' && p != input_basename)
5890 basename_length = p - input_basename;
5891 input_suffix = p + 1;
5896 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5897 we will need to do a stat on the input_filename. The
5898 INPUT_STAT_SET signals that the stat is needed. */
5902 /* On fatal signals, delete all the temporary files. */
5905 fatal_error (int signum)
5907 signal (signum, SIG_DFL);
5908 delete_failure_queue ();
5909 delete_temp_files ();
5910 /* Get the same signal again, this time not handled,
5911 so its normal effect occurs. */
5912 kill (getpid (), signum);
5915 extern int main (int, const char **);
5918 main (int argc, const char **argv)
5922 int linker_was_run = 0;
5923 int num_linker_inputs = 0;
5924 char *explicit_link_files;
5927 struct user_specs *uptr;
5929 p = argv[0] + strlen (argv[0]);
5930 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
5934 xmalloc_set_program_name (programname);
5936 #ifdef GCC_DRIVER_HOST_INITIALIZATION
5937 /* Perform host dependent initialization when needed. */
5938 GCC_DRIVER_HOST_INITIALIZATION;
5941 gcc_init_libintl ();
5943 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
5944 signal (SIGINT, fatal_error);
5946 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
5947 signal (SIGHUP, fatal_error);
5949 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
5950 signal (SIGTERM, fatal_error);
5952 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
5953 signal (SIGPIPE, fatal_error);
5956 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
5957 receive the signal. A different setting is inheritable */
5958 signal (SIGCHLD, SIG_DFL);
5961 /* Allocate the argument vector. */
5964 obstack_init (&obstack);
5966 /* Build multilib_select, et. al from the separate lines that make up each
5967 multilib selection. */
5969 const char *const *q = multilib_raw;
5972 obstack_init (&multilib_obstack);
5973 while ((p = *q++) != (char *) 0)
5974 obstack_grow (&multilib_obstack, p, strlen (p));
5976 obstack_1grow (&multilib_obstack, 0);
5977 multilib_select = obstack_finish (&multilib_obstack);
5979 q = multilib_matches_raw;
5980 while ((p = *q++) != (char *) 0)
5981 obstack_grow (&multilib_obstack, p, strlen (p));
5983 obstack_1grow (&multilib_obstack, 0);
5984 multilib_matches = obstack_finish (&multilib_obstack);
5986 q = multilib_exclusions_raw;
5987 while ((p = *q++) != (char *) 0)
5988 obstack_grow (&multilib_obstack, p, strlen (p));
5990 obstack_1grow (&multilib_obstack, 0);
5991 multilib_exclusions = obstack_finish (&multilib_obstack);
5994 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
5997 obstack_1grow (&multilib_obstack, ' ');
5998 obstack_grow (&multilib_obstack,
5999 multilib_defaults_raw[i],
6000 strlen (multilib_defaults_raw[i]));
6004 obstack_1grow (&multilib_obstack, 0);
6005 multilib_defaults = obstack_finish (&multilib_obstack);
6008 /* Set up to remember the pathname of gcc and any options
6009 needed for collect. We use argv[0] instead of programname because
6010 we need the complete pathname. */
6011 obstack_init (&collect_obstack);
6012 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6013 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6014 putenv (obstack_finish (&collect_obstack));
6016 #ifdef INIT_ENVIRONMENT
6017 /* Set up any other necessary machine specific environment variables. */
6018 putenv (INIT_ENVIRONMENT);
6021 /* Make a table of what switches there are (switches, n_switches).
6022 Make a table of specified input files (infiles, n_infiles).
6023 Decode switches that are handled locally. */
6025 process_command (argc, argv);
6027 /* Initialize the vector of specs to just the default.
6028 This means one element containing 0s, as a terminator. */
6030 compilers = xmalloc (sizeof default_compilers);
6031 memcpy (compilers, default_compilers, sizeof default_compilers);
6032 n_compilers = n_default_compilers;
6034 /* Read specs from a file if there is one. */
6036 machine_suffix = concat (spec_machine, dir_separator_str,
6037 spec_version, dir_separator_str, NULL);
6038 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6040 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, 0);
6041 /* Read the specs file unless it is a default one. */
6042 if (specs_file != 0 && strcmp (specs_file, "specs"))
6043 read_specs (specs_file, TRUE);
6047 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6048 for any override of as, ld and libraries. */
6049 specs_file = alloca (strlen (standard_exec_prefix)
6050 + strlen (just_machine_suffix) + sizeof ("specs"));
6052 strcpy (specs_file, standard_exec_prefix);
6053 strcat (specs_file, just_machine_suffix);
6054 strcat (specs_file, "specs");
6055 if (access (specs_file, R_OK) == 0)
6056 read_specs (specs_file, TRUE);
6058 /* Process any configure-time defaults specified for the command line
6059 options, via OPTION_DEFAULT_SPECS. */
6060 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6061 do_option_spec (option_default_specs[i].name,
6062 option_default_specs[i].spec);
6064 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6065 of the command line. */
6067 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6068 do_self_spec (driver_self_specs[i]);
6070 /* If not cross-compiling, look for executables in the standard
6072 if (*cross_compile == '0')
6074 if (*md_exec_prefix)
6076 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6077 PREFIX_PRIORITY_LAST, 0, NULL, 0);
6081 /* Process sysroot_suffix_spec. */
6082 if (*sysroot_suffix_spec != 0
6083 && do_spec_2 (sysroot_suffix_spec) == 0)
6085 if (argbuf_index > 1)
6086 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC.");
6087 else if (argbuf_index == 1)
6088 target_sysroot_suffix = xstrdup (argbuf[argbuf_index -1]);
6091 /* Process sysroot_hdrs_suffix_spec. */
6092 if (*sysroot_hdrs_suffix_spec != 0
6093 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6095 if (argbuf_index > 1)
6096 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC.");
6097 else if (argbuf_index == 1)
6098 target_sysroot_hdrs_suffix = xstrdup (argbuf[argbuf_index -1]);
6101 /* Look for startfiles in the standard places. */
6102 if (*startfile_prefix_spec != 0
6103 && do_spec_2 (startfile_prefix_spec) == 0
6104 && do_spec_1 (" ", 0, NULL) == 0)
6107 for (ndx = 0; ndx < argbuf_index; ndx++)
6108 add_sysrooted_prefix (&startfile_prefixes, argbuf[ndx], "BINUTILS",
6109 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6111 /* We should eventually get rid of all these and stick to
6112 startfile_prefix_spec exclusively. */
6113 else if (*cross_compile == '0' || target_system_root)
6115 if (*md_exec_prefix)
6116 add_sysrooted_prefix (&startfile_prefixes, md_exec_prefix, "GCC",
6117 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6119 if (*md_startfile_prefix)
6120 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6121 "GCC", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6123 if (*md_startfile_prefix_1)
6124 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6125 "GCC", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6127 /* If standard_startfile_prefix is relative, base it on
6128 standard_exec_prefix. This lets us move the installed tree
6129 as a unit. If GCC_EXEC_PREFIX is defined, base
6130 standard_startfile_prefix on that as well.
6132 If the prefix is relative, only search it for native compilers;
6133 otherwise we will search a directory containing host libraries. */
6134 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
6135 add_sysrooted_prefix (&startfile_prefixes,
6136 standard_startfile_prefix, "BINUTILS",
6137 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6138 else if (*cross_compile == '0')
6140 if (gcc_exec_prefix)
6141 add_prefix (&startfile_prefixes,
6142 concat (gcc_exec_prefix, machine_suffix,
6143 standard_startfile_prefix, NULL),
6144 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
6145 add_prefix (&startfile_prefixes,
6146 concat (standard_exec_prefix,
6148 standard_startfile_prefix, NULL),
6149 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
6152 add_sysrooted_prefix (&startfile_prefixes, standard_startfile_prefix_1,
6153 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6154 add_sysrooted_prefix (&startfile_prefixes, standard_startfile_prefix_2,
6155 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6156 #if 0 /* Can cause surprises, and one can use -B./ instead. */
6157 add_prefix (&startfile_prefixes, "./", NULL,
6158 PREFIX_PRIORITY_LAST, 1, NULL, 0);
6162 /* Process any user specified specs in the order given on the command
6164 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6166 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6168 read_specs (filename ? filename : uptr->filename, FALSE);
6171 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6172 if (gcc_exec_prefix)
6173 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6174 spec_version, dir_separator_str, NULL);
6176 /* Now we have the specs.
6177 Set the `valid' bits for switches that match anything in any spec. */
6179 validate_all_switches ();
6181 /* Now that we have the switches and the specs, set
6182 the subdirectory based on the options. */
6183 set_multilib_dir ();
6185 /* Warn about any switches that no pass was interested in. */
6187 for (i = 0; (int) i < n_switches; i++)
6188 if (! switches[i].validated)
6189 error ("unrecognized option `-%s'", switches[i].part1);
6191 /* Obey some of the options. */
6193 if (print_search_dirs)
6195 printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix);
6196 printf (_("programs: %s\n"), build_search_list (&exec_prefixes, "", 0));
6197 printf (_("libraries: %s\n"), build_search_list (&startfile_prefixes, "", 0));
6201 if (print_file_name)
6203 printf ("%s\n", find_file (print_file_name));
6207 if (print_prog_name)
6209 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6210 printf ("%s\n", (newname ? newname : print_prog_name));
6214 if (print_multi_lib)
6216 print_multilib_info ();
6220 if (print_multi_directory)
6222 if (multilib_dir == NULL)
6225 printf ("%s\n", multilib_dir);
6229 if (print_multi_os_directory)
6231 if (multilib_os_dir == NULL)
6234 printf ("%s\n", multilib_os_dir);
6238 if (target_help_flag)
6240 /* Print if any target specific options. */
6242 /* We do not exit here. Instead we have created a fake input file
6243 called 'target-dummy' which needs to be compiled, and we pass this
6244 on to the various sub-processes, along with the --target-help
6248 if (print_help_list)
6254 printf (_("\nFor bug reporting instructions, please see:\n"));
6255 printf ("%s.\n", bug_report_url);
6260 /* We do not exit here. Instead we have created a fake input file
6261 called 'help-dummy' which needs to be compiled, and we pass this
6262 on the various sub-processes, along with the --help switch. */
6270 notice ("Configured with: %s\n", configuration_arguments);
6272 #ifdef THREAD_MODEL_SPEC
6273 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6274 but there's no point in doing all this processing just to get
6275 thread_model back. */
6276 obstack_init (&obstack);
6277 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6278 obstack_1grow (&obstack, '\0');
6279 thrmod = obstack_finish (&obstack);
6281 thrmod = thread_model;
6284 notice ("Thread model: %s\n", thrmod);
6286 /* compiler_version is truncated at the first space when initialized
6287 from version string, so truncate version_string at the first space
6288 before comparing. */
6289 for (n = 0; version_string[n]; n++)
6290 if (version_string[n] == ' ')
6293 if (! strncmp (version_string, compiler_version, n)
6294 && compiler_version[n] == 0)
6295 notice ("gcc version %s\n", version_string);
6297 notice ("gcc driver version %s executing gcc version %s\n",
6298 version_string, compiler_version);
6304 if (n_infiles == added_libraries)
6305 fatal ("no input files");
6307 /* Make a place to record the compiler output file names
6308 that correspond to the input files. */
6311 i += lang_specific_extra_outfiles;
6312 outfiles = xcalloc (i, sizeof (char *));
6314 /* Record which files were specified explicitly as link input. */
6316 explicit_link_files = xcalloc (1, n_infiles);
6320 int lang_n_infiles = 0;
6321 for (i = 0; (int) i < n_infiles; i++)
6323 const char *name = infiles[i].name;
6324 struct compiler *compiler
6325 = lookup_compiler (name, strlen (name), infiles[i].language);
6326 if (compiler == NULL)
6327 error ("%s: linker input file unused because linking not done",
6329 else if (lang_n_infiles > 0 && compiler != input_file_compiler)
6330 fatal ("cannot specify -o with -c or -S and multiple languages");
6334 input_file_compiler = compiler;
6339 for (i = 0; (int) i < (combine_inputs ? 1 : n_infiles); i++)
6341 int this_file_error = 0;
6343 /* Tell do_spec what to substitute for %i. */
6345 input_file_number = i;
6346 set_input (infiles[i].name);
6348 /* Use the same thing in %o, unless cp->spec says otherwise. */
6350 outfiles[i] = input_filename;
6352 /* Figure out which compiler from the file's suffix. */
6354 if (! combine_inputs)
6356 = lookup_compiler (infiles[i].name, input_filename_length,
6357 infiles[i].language);
6359 if (input_file_compiler)
6361 /* Ok, we found an applicable compiler. Run its spec. */
6363 if (input_file_compiler->spec[0] == '#')
6365 error ("%s: %s compiler not installed on this system",
6366 input_filename, &input_file_compiler->spec[1]);
6367 this_file_error = 1;
6371 value = do_spec (input_file_compiler->spec);
6373 this_file_error = 1;
6377 /* If this file's name does not contain a recognized suffix,
6378 record it as explicit linker input. */
6381 explicit_link_files[i] = 1;
6383 /* Clear the delete-on-failure queue, deleting the files in it
6384 if this compilation failed. */
6386 if (this_file_error)
6388 delete_failure_queue ();
6391 /* If this compilation succeeded, don't delete those files later. */
6392 clear_failure_queue ();
6395 /* Reset the output file name to the first input file name, for use
6396 with %b in LINK_SPEC on a target that prefers not to emit a.out
6399 set_input (infiles[0].name);
6401 if (error_count == 0)
6403 /* Make sure INPUT_FILE_NUMBER points to first available open
6405 input_file_number = n_infiles;
6406 if (lang_specific_pre_link ())
6410 /* Determine if there are any linker input files. */
6411 num_linker_inputs = 0;
6412 for (i = 0; (int) i < n_infiles; i++)
6413 if (explicit_link_files[i] || outfiles[i] != NULL)
6414 num_linker_inputs++;
6416 /* Run ld to link all the compiler output files. */
6418 if (num_linker_inputs > 0 && error_count == 0)
6420 int tmp = execution_count;
6422 /* We'll use ld if we can't find collect2. */
6423 if (! strcmp (linker_name_spec, "collect2"))
6425 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, 0);
6427 linker_name_spec = "ld";
6429 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6431 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH");
6432 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV);
6434 value = do_spec (link_command_spec);
6437 linker_was_run = (tmp != execution_count);
6440 /* If options said don't run linker,
6441 complain about input files to be given to the linker. */
6443 if (! linker_was_run && error_count == 0)
6444 for (i = 0; (int) i < n_infiles; i++)
6445 if (explicit_link_files[i])
6446 error ("%s: linker input file unused because linking not done",
6449 /* Delete some or all of the temporary files we made. */
6452 delete_failure_queue ();
6453 delete_temp_files ();
6455 if (print_help_list)
6457 printf (("\nFor bug reporting instructions, please see:\n"));
6458 printf ("%s\n", bug_report_url);
6461 return (signal_count != 0 ? 2
6462 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
6466 /* Find the proper compilation spec for the file name NAME,
6467 whose length is LENGTH. LANGUAGE is the specified language,
6468 or 0 if this file is to be passed to the linker. */
6470 static struct compiler *
6471 lookup_compiler (const char *name, size_t length, const char *language)
6473 struct compiler *cp;
6475 /* If this was specified by the user to be a linker input, indicate that. */
6476 if (language != 0 && language[0] == '*')
6479 /* Otherwise, look for the language, if one is spec'd. */
6482 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6483 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6486 error ("language %s not recognized", language);
6490 /* Look for a suffix. */
6491 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6493 if (/* The suffix `-' matches only the file name `-'. */
6494 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6495 || (strlen (cp->suffix) < length
6496 /* See if the suffix matches the end of NAME. */
6497 && !strcmp (cp->suffix,
6498 name + length - strlen (cp->suffix))
6503 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6504 /* look again, but case-insensitively this time. */
6506 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6508 if (/* The suffix `-' matches only the file name `-'. */
6509 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6510 || (strlen (cp->suffix) < length
6511 /* See if the suffix matches the end of NAME. */
6512 && ((!strcmp (cp->suffix,
6513 name + length - strlen (cp->suffix))
6514 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6515 && !strcasecmp (cp->suffix,
6516 name + length - strlen (cp->suffix)))
6522 if (cp >= compilers)
6524 if (cp->spec[0] != '@')
6525 /* A non-alias entry: return it. */
6528 /* An alias entry maps a suffix to a language.
6529 Search for the language; pass 0 for NAME and LENGTH
6530 to avoid infinite recursion if language not found. */
6531 return lookup_compiler (NULL, 0, cp->spec + 1);
6537 save_string (const char *s, int len)
6539 char *result = xmalloc (len + 1);
6541 memcpy (result, s, len);
6547 pfatal_with_name (const char *name)
6549 perror_with_name (name);
6550 delete_temp_files ();
6555 perror_with_name (const char *name)
6557 error ("%s: %s", name, xstrerror (errno));
6561 pfatal_pexecute (const char *errmsg_fmt, const char *errmsg_arg)
6565 int save_errno = errno;
6567 /* Space for trailing '\0' is in %s. */
6568 char *msg = xmalloc (strlen (errmsg_fmt) + strlen (errmsg_arg));
6569 sprintf (msg, errmsg_fmt, errmsg_arg);
6575 pfatal_with_name (errmsg_fmt);
6578 /* Output an error message and exit. */
6583 fatal ("internal gcc abort");
6586 /* Output an error message and exit. */
6589 fatal (const char *msgid, ...)
6593 va_start (ap, msgid);
6595 fprintf (stderr, "%s: ", programname);
6596 vfprintf (stderr, _(msgid), ap);
6598 fprintf (stderr, "\n");
6599 delete_temp_files ();
6604 error (const char *msgid, ...)
6608 va_start (ap, msgid);
6609 fprintf (stderr, "%s: ", programname);
6610 vfprintf (stderr, _(msgid), ap);
6613 fprintf (stderr, "\n");
6617 notice (const char *msgid, ...)
6621 va_start (ap, msgid);
6622 vfprintf (stderr, _(msgid), ap);
6627 validate_switches_from_spec (const char *spec)
6629 const char *p = spec;
6632 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
6633 /* We have a switch spec. */
6634 p = validate_switches (p + 1);
6638 validate_all_switches (void)
6640 struct compiler *comp;
6641 struct spec_list *spec;
6643 for (comp = compilers; comp->spec; comp++)
6644 validate_switches_from_spec (comp->spec);
6646 /* Look through the linked list of specs read from the specs file. */
6647 for (spec = specs; spec; spec = spec->next)
6648 validate_switches_from_spec (*spec->ptr_spec);
6650 validate_switches_from_spec (link_command_spec);
6653 /* Look at the switch-name that comes after START
6654 and mark as valid all supplied switches that match it. */
6657 validate_switches (const char *start)
6659 const char *p = start;
6663 bool suffix = false;
6664 bool starred = false;
6666 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
6679 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
6680 || *p == ',' || *p == '.' || *p == '@')
6685 starred = true, p++;
6691 /* Mark all matching switches as valid. */
6692 for (i = 0; i < n_switches; i++)
6693 if (!strncmp (switches[i].part1, atom, len)
6694 && (starred || switches[i].part1[len] == 0))
6695 switches[i].validated = 1;
6699 if (*p && (p[-1] == '|' || p[-1] == '&'))
6702 if (*p && p[-1] == ':')
6704 while (*p && *p != ';' && *p != '}')
6709 if (*p == '{' || *p == '<')
6710 p = validate_switches (p+1);
6711 else if (p[0] == 'W' && p[1] == '{')
6712 p = validate_switches (p+2);
6719 if (*p && p[-1] == ';')
6733 static struct mdswitchstr *mdswitches;
6734 static int n_mdswitches;
6736 /* Check whether a particular argument was used. The first time we
6737 canonicalize the switches to keep only the ones we care about. */
6740 used_arg (const char *p, int len)
6745 const char *replace;
6750 static struct mswitchstr *mswitches;
6751 static int n_mswitches;
6756 struct mswitchstr *matches;
6760 /* Break multilib_matches into the component strings of string
6761 and replacement string. */
6762 for (q = multilib_matches; *q != '\0'; q++)
6766 matches = alloca ((sizeof (struct mswitchstr)) * cnt);
6768 q = multilib_matches;
6778 matches[i].len = q - matches[i].str;
6780 matches[i].replace = ++q;
6781 while (*q != ';' && *q != '\0')
6787 matches[i].rep_len = q - matches[i].replace;
6793 /* Now build a list of the replacement string for switches that we care
6794 about. Make sure we allocate at least one entry. This prevents
6795 xmalloc from calling fatal, and prevents us from re-executing this
6798 = xmalloc (sizeof (struct mswitchstr)
6799 * (n_mdswitches + (n_switches ? n_switches : 1)));
6800 for (i = 0; i < n_switches; i++)
6802 int xlen = strlen (switches[i].part1);
6803 for (j = 0; j < cnt; j++)
6804 if (xlen == matches[j].len
6805 && ! strncmp (switches[i].part1, matches[j].str, xlen))
6807 mswitches[n_mswitches].str = matches[j].replace;
6808 mswitches[n_mswitches].len = matches[j].rep_len;
6809 mswitches[n_mswitches].replace = (char *) 0;
6810 mswitches[n_mswitches].rep_len = 0;
6816 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
6817 on the command line nor any options mutually incompatible with
6819 for (i = 0; i < n_mdswitches; i++)
6823 for (q = multilib_options; *q != '\0'; q++)
6829 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
6830 || strchr (" /", q[mdswitches[i].len]) == NULL)
6832 while (*q != ' ' && *q != '/' && *q != '\0')
6839 if (*q != ' ' && *q != '\0')
6841 while (*r != ' ' && *r != '\0')
6844 while (*q != ' ' && *q != '/' && *q != '\0')
6847 if (used_arg (r, q - r))
6852 mswitches[n_mswitches].str = mdswitches[i].str;
6853 mswitches[n_mswitches].len = mdswitches[i].len;
6854 mswitches[n_mswitches].replace = (char *) 0;
6855 mswitches[n_mswitches].rep_len = 0;
6868 for (i = 0; i < n_mswitches; i++)
6869 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
6876 default_arg (const char *p, int len)
6880 for (i = 0; i < n_mdswitches; i++)
6881 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
6887 /* Work out the subdirectory to use based on the options. The format of
6888 multilib_select is a list of elements. Each element is a subdirectory
6889 name followed by a list of options followed by a semicolon. The format
6890 of multilib_exclusions is the same, but without the preceding
6891 directory. First gcc will check the exclusions, if none of the options
6892 beginning with an exclamation point are present, and all of the other
6893 options are present, then we will ignore this completely. Passing
6894 that, gcc will consider each multilib_select in turn using the same
6895 rules for matching the options. If a match is found, that subdirectory
6899 set_multilib_dir (void)
6902 unsigned int this_path_len;
6903 const char *this_path, *this_arg;
6904 const char *start, *end;
6906 int ok, ndfltok, first;
6909 start = multilib_defaults;
6910 while (*start == ' ' || *start == '\t')
6912 while (*start != '\0')
6915 while (*start != ' ' && *start != '\t' && *start != '\0')
6917 while (*start == ' ' || *start == '\t')
6925 mdswitches = xmalloc (sizeof (struct mdswitchstr) * n_mdswitches);
6926 for (start = multilib_defaults; *start != '\0'; start = end + 1)
6928 while (*start == ' ' || *start == '\t')
6934 for (end = start + 1;
6935 *end != ' ' && *end != '\t' && *end != '\0'; end++)
6938 obstack_grow (&multilib_obstack, start, end - start);
6939 obstack_1grow (&multilib_obstack, 0);
6940 mdswitches[i].str = obstack_finish (&multilib_obstack);
6941 mdswitches[i++].len = end - start;
6948 p = multilib_exclusions;
6951 /* Ignore newlines. */
6958 /* Check the arguments. */
6972 while (*p != ' ' && *p != ';')
6979 if (*this_arg != '!')
6987 ok = used_arg (this_arg, p - this_arg);
7002 p = multilib_select;
7005 /* Ignore newlines. */
7012 /* Get the initial path. */
7020 this_path_len = p - this_path;
7022 /* Check the arguments. */
7038 while (*p != ' ' && *p != ';')
7045 if (*this_arg != '!')
7053 /* If this is a default argument, we can just ignore it.
7054 This is true even if this_arg begins with '!'. Beginning
7055 with '!' does not mean that this argument is necessarily
7056 inappropriate for this library: it merely means that
7057 there is a more specific library which uses this
7058 argument. If this argument is a default, we need not
7059 consider that more specific library. */
7060 ok = used_arg (this_arg, p - this_arg);
7067 if (default_arg (this_arg, p - this_arg))
7076 if (this_path_len != 1
7077 || this_path[0] != '.')
7079 char *new_multilib_dir = xmalloc (this_path_len + 1);
7082 strncpy (new_multilib_dir, this_path, this_path_len);
7083 new_multilib_dir[this_path_len] = '\0';
7084 q = strchr (new_multilib_dir, ':');
7087 multilib_dir = new_multilib_dir;
7094 const char *q = this_path, *end = this_path + this_path_len;
7096 while (q < end && *q != ':')
7100 char *new_multilib_os_dir = xmalloc (end - q);
7101 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
7102 new_multilib_os_dir[end - q - 1] = '\0';
7103 multilib_os_dir = new_multilib_os_dir;
7111 if (multilib_dir == NULL && multilib_os_dir != NULL
7112 && strcmp (multilib_os_dir, ".") == 0)
7114 free ((char *) multilib_os_dir);
7115 multilib_os_dir = NULL;
7117 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7118 multilib_os_dir = multilib_dir;
7121 /* Print out the multiple library subdirectory selection
7122 information. This prints out a series of lines. Each line looks
7123 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7124 required. Only the desired options are printed out, the negative
7125 matches. The options are print without a leading dash. There are
7126 no spaces to make it easy to use the information in the shell.
7127 Each subdirectory is printed only once. This assumes the ordering
7128 generated by the genmultilib script. Also, we leave out ones that match
7132 print_multilib_info (void)
7134 const char *p = multilib_select;
7135 const char *last_path = 0, *this_path;
7137 unsigned int last_path_len = 0;
7142 /* Ignore newlines. */
7149 /* Get the initial path. */
7158 /* When --disable-multilib was used but target defines
7159 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7160 to find multilib_os_dir, so skip them from output. */
7161 if (this_path[0] == '.' && this_path[1] == ':')
7164 /* Check for matches with the multilib_exclusions. We don't bother
7165 with the '!' in either list. If any of the exclusion rules match
7166 all of its options with the select rule, we skip it. */
7168 const char *e = multilib_exclusions;
7169 const char *this_arg;
7174 /* Ignore newlines. */
7181 /* Check the arguments. */
7198 while (*e != ' ' && *e != ';')
7209 int len = e - this_arg;
7216 while (*q != ' ' && *q != ';')
7223 if (! strncmp (arg, this_arg, (len < q - arg) ? q - arg : len) ||
7224 default_arg (this_arg, e - this_arg))
7254 /* If this is a duplicate, skip it. */
7255 skip = (last_path != 0 && (unsigned int) (p - this_path) == last_path_len
7256 && ! strncmp (last_path, this_path, last_path_len));
7258 last_path = this_path;
7259 last_path_len = p - this_path;
7262 /* If this directory requires any default arguments, we can skip
7263 it. We will already have printed a directory identical to
7264 this one which does not require that default argument. */
7282 while (*q != ' ' && *q != ';')
7290 && default_arg (arg, q - arg))
7305 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7324 use_arg = *p != '!';
7329 while (*p != ' ' && *p != ';')
7344 /* If there are extra options, print them now. */
7345 if (multilib_extra && *multilib_extra)
7347 int print_at = TRUE;
7350 for (q = multilib_extra; *q != '\0'; q++)
7371 /* if-exists built-in spec function.
7373 Checks to see if the file specified by the absolute pathname in
7374 ARGS exists. Returns that pathname if found.
7376 The usual use for this function is to check for a library file
7377 (whose name has been expanded with %s). */
7380 if_exists_spec_function (int argc, const char **argv)
7382 /* Must have only one argument. */
7383 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7389 /* if-exists-else built-in spec function.
7391 This is like if-exists, but takes an additional argument which
7392 is returned if the first argument does not exist. */
7395 if_exists_else_spec_function (int argc, const char **argv)
7397 /* Must have exactly two arguments. */
7401 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))