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, 2005, 2006, 2007
4 Free Software Foundation, Inc.
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 3, or (at your option) any later
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>.
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 gcc.h. 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
90 /* By default there is no special suffix for target executables. */
91 /* FIXME: when autoconf is fixed, remove the host check - dj */
92 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
93 #define HAVE_TARGET_EXECUTABLE_SUFFIX
96 /* By default there is no special suffix for host executables. */
97 #ifdef HOST_EXECUTABLE_SUFFIX
98 #define HAVE_HOST_EXECUTABLE_SUFFIX
100 #define HOST_EXECUTABLE_SUFFIX ""
103 /* By default, the suffix for target object files is ".o". */
104 #ifdef TARGET_OBJECT_SUFFIX
105 #define HAVE_TARGET_OBJECT_SUFFIX
107 #define TARGET_OBJECT_SUFFIX ".o"
110 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
112 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
113 #ifndef LIBRARY_PATH_ENV
114 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
118 #define kill(p,s) raise(s)
121 /* If a stage of compilation returns an exit status >= 1,
122 compilation of that file ceases. */
124 #define MIN_FATAL_STATUS 1
126 /* Flag set by cppspec.c to 1. */
129 /* Flag set to nonzero if an @file argument has been supplied to gcc. */
130 static bool at_file_supplied;
132 /* Flag saying to pass the greatest exit code returned by a sub-process
133 to the calling program. */
134 static int pass_exit_codes;
136 /* Definition of string containing the arguments given to configure. */
137 #include "configargs.h"
139 /* Flag saying to print the directories gcc will search through looking for
140 programs, libraries, etc. */
142 static int print_search_dirs;
144 /* Flag saying to print the full filename of this file
145 as found through our usual search mechanism. */
147 static const char *print_file_name = NULL;
149 /* As print_file_name, but search for executable file. */
151 static const char *print_prog_name = NULL;
153 /* Flag saying to print the relative path we'd use to
154 find libgcc.a given the current compiler flags. */
156 static int print_multi_directory;
158 /* Flag saying to print the relative path we'd use to
159 find OS libraries given the current compiler flags. */
161 static int print_multi_os_directory;
163 /* Flag saying to print the list of subdirectories and
164 compiler flags used to select them in a standard form. */
166 static int print_multi_lib;
168 /* Flag saying to print the command line options understood by gcc and its
171 static int print_help_list;
173 /* Flag saying to print the sysroot suffix used for searching for
176 static int print_sysroot_headers_suffix;
178 /* Flag indicating whether we should print the command and arguments */
180 static int verbose_flag;
182 /* Flag indicating whether we should ONLY print the command and
183 arguments (like verbose_flag) without executing the command.
184 Displayed arguments are quoted so that the generated command
185 line is suitable for execution. This is intended for use in
186 shell scripts to capture the driver-generated command line. */
187 static int verbose_only_flag;
189 /* Flag indicating how to print command line options of sub-processes. */
191 static int print_subprocess_help;
193 /* Flag indicating whether we should report subprocess execution times
194 (if this is supported by the system - see pexecute.c). */
196 static int report_times;
198 /* Nonzero means place this string before uses of /, so that include
199 and library files can be found in an alternate location. */
201 #ifdef TARGET_SYSTEM_ROOT
202 static const char *target_system_root = TARGET_SYSTEM_ROOT;
204 static const char *target_system_root = 0;
207 /* Nonzero means pass the updated target_system_root to the compiler. */
209 static int target_system_root_changed;
211 /* Nonzero means append this string to target_system_root. */
213 static const char *target_sysroot_suffix = 0;
215 /* Nonzero means append this string to target_system_root for headers. */
217 static const char *target_sysroot_hdrs_suffix = 0;
219 /* Nonzero means write "temp" files in source directory
220 and use the source file's name in them, and don't delete them. */
222 static int save_temps_flag;
224 /* Nonzero means pass multiple source files to the compiler at one time. */
226 static int combine_flag = 0;
228 /* Nonzero means use pipes to communicate between subprocesses.
229 Overridden by either of the above two flags. */
231 static int use_pipes;
233 /* The compiler version. */
235 static const char *compiler_version;
237 /* The target version specified with -V */
239 static const char *const spec_version = DEFAULT_TARGET_VERSION;
241 /* The target machine specified with -b. */
243 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
245 /* Nonzero if cross-compiling.
246 When -b is used, the value comes from the `specs' file. */
248 #ifdef CROSS_DIRECTORY_STRUCTURE
249 static const char *cross_compile = "1";
251 static const char *cross_compile = "0";
254 #ifdef MODIFY_TARGET_NAME
256 /* Information on how to alter the target name based on a command-line
257 switch. The only case we support now is simply appending or deleting a
258 string to or from the end of the first part of the configuration name. */
260 static const struct modify_target
262 const char *const sw;
263 const enum add_del {ADD, DELETE} add_del;
264 const char *const str;
266 modify_target[] = MODIFY_TARGET_NAME;
269 /* The number of errors that have occurred; the link phase will not be
270 run if this is nonzero. */
271 static int error_count = 0;
273 /* Greatest exit code of sub-processes that has been encountered up to
275 static int greatest_status = 1;
277 /* This is the obstack which we use to allocate many strings. */
279 static struct obstack obstack;
281 /* This is the obstack to build an environment variable to pass to
282 collect2 that describes all of the relevant switches of what to
283 pass the compiler in building the list of pointers to constructors
286 static struct obstack collect_obstack;
288 /* Forward declaration for prototypes. */
292 static void init_spec (void);
293 static void store_arg (const char *, int, int);
294 static char *load_specs (const char *);
295 static void read_specs (const char *, int);
296 static void set_spec (const char *, const char *);
297 static struct compiler *lookup_compiler (const char *, size_t, const char *);
298 static char *build_search_list (const struct path_prefix *, const char *,
300 static void putenv_from_prefixes (const struct path_prefix *, const char *,
302 static int access_check (const char *, int);
303 static char *find_a_file (const struct path_prefix *, const char *, int, bool);
304 static void add_prefix (struct path_prefix *, const char *, const char *,
306 static void add_sysrooted_prefix (struct path_prefix *, const char *,
307 const char *, int, int, int);
308 static void translate_options (int *, const char *const **);
309 static char *skip_whitespace (char *);
310 static void delete_if_ordinary (const char *);
311 static void delete_temp_files (void);
312 static void delete_failure_queue (void);
313 static void clear_failure_queue (void);
314 static int check_live_switch (int, int);
315 static const char *handle_braces (const char *);
316 static inline bool input_suffix_matches (const char *, const char *);
317 static inline bool switch_matches (const char *, const char *, int);
318 static inline void mark_matching_switches (const char *, const char *, int);
319 static inline void process_marked_switches (void);
320 static const char *process_brace_body (const char *, const char *, const char *, int, int);
321 static const struct spec_function *lookup_spec_function (const char *);
322 static const char *eval_spec_function (const char *, const char *);
323 static const char *handle_spec_function (const char *);
324 static char *save_string (const char *, int);
325 static void set_collect_gcc_options (void);
326 static int do_spec_1 (const char *, int, const char *);
327 static int do_spec_2 (const char *);
328 static void do_option_spec (const char *, const char *);
329 static void do_self_spec (const char *);
330 static const char *find_file (const char *);
331 static int is_directory (const char *, bool);
332 static const char *validate_switches (const char *);
333 static void validate_all_switches (void);
334 static inline void validate_switches_from_spec (const char *);
335 static void give_switch (int, int);
336 static int used_arg (const char *, int);
337 static int default_arg (const char *, int);
338 static void set_multilib_dir (void);
339 static void print_multilib_info (void);
340 static void perror_with_name (const char *);
341 static void fatal_ice (const char *, ...) ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN;
342 static void notice (const char *, ...) ATTRIBUTE_PRINTF_1;
343 static void display_help (void);
344 static void add_preprocessor_option (const char *, int);
345 static void add_assembler_option (const char *, int);
346 static void add_linker_option (const char *, int);
347 static void process_command (int, const char **);
348 static int execute (void);
349 static void alloc_args (void);
350 static void clear_args (void);
351 static void fatal_error (int);
352 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
353 static void init_gcc_specs (struct obstack *, const char *, const char *,
356 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
357 static const char *convert_filename (const char *, int, int);
360 static const char *getenv_spec_function (int, const char **);
361 static const char *if_exists_spec_function (int, const char **);
362 static const char *if_exists_else_spec_function (int, const char **);
363 static const char *replace_outfile_spec_function (int, const char **);
364 static const char *version_compare_spec_function (int, const char **);
365 static const char *include_spec_function (int, const char **);
366 static const char *print_asm_header_spec_function (int, const char **);
368 /* The Specs Language
370 Specs are strings containing lines, each of which (if not blank)
371 is made up of a program name, and arguments separated by spaces.
372 The program name must be exact and start from root, since no path
373 is searched and it is unreliable to depend on the current working directory.
374 Redirection of input or output is not supported; the subprograms must
375 accept filenames saying what files to read and write.
377 In addition, the specs can contain %-sequences to substitute variable text
378 or for conditional text. Here is a table of all defined %-sequences.
379 Note that spaces are not generated automatically around the results of
380 expanding these sequences; therefore, you can concatenate them together
381 or with constant text in a single argument.
383 %% substitute one % into the program name or argument.
384 %i substitute the name of the input file being processed.
385 %b substitute the basename of the input file being processed.
386 This is the substring up to (and not including) the last period
387 and not including the directory.
388 %B same as %b, but include the file suffix (text after the last period).
390 substitute a file name that has suffix SUFFIX and is chosen
391 once per compilation, and mark the argument a la %d. To reduce
392 exposure to denial-of-service attacks, the file name is now
393 chosen in a way that is hard to predict even when previously
394 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
395 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
396 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
397 had been pre-processed. Previously, %g was simply substituted
398 with a file name chosen once per compilation, without regard
399 to any appended suffix (which was therefore treated just like
400 ordinary text), making such attacks more likely to succeed.
402 like %g, but if -pipe is in effect, expands simply to "-".
404 like %g, but if -pipe is in effect, expands to nothing. (We have both
405 %| and %m to accommodate differences between system assemblers; see
406 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
408 like %g, but generates a new temporary file name even if %uSUFFIX
411 substitutes the last file name generated with %uSUFFIX, generating a
412 new one if there is no such last file name. In the absence of any
413 %uSUFFIX, this is just like %gSUFFIX, except they don't share
414 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
415 would involve the generation of two distinct file names, one
416 for each `%g.s' and another for each `%U.s'. Previously, %U was
417 simply substituted with a file name chosen for the previous %u,
418 without regard to any appended suffix.
420 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
421 writable, and if save-temps is off; otherwise, substitute the name
422 of a temporary file, just like %u. This temporary file is not
423 meant for communication between processes, but rather as a junk
426 substitutes .SUFFIX for the suffixes of a matched switch's args when
427 it is subsequently output with %*. SUFFIX is terminated by the next
429 %d marks the argument containing or following the %d as a
430 temporary file name, so that that file will be deleted if CC exits
431 successfully. Unlike %g, this contributes no text to the argument.
432 %w marks the argument containing or following the %w as the
433 "output file" of this compilation. This puts the argument
434 into the sequence of arguments that %o will substitute later.
435 %V indicates that this compilation produces no "output file".
437 like %{...} but mark last argument supplied within
438 as a file to be deleted on failure.
439 %o substitutes the names of all the output files, with spaces
440 automatically placed around them. You should write spaces
441 around the %o as well or the results are undefined.
442 %o is for use in the specs for running the linker.
443 Input files whose names have no recognized suffix are not compiled
444 at all, but they are included among the output files, so they will
446 %O substitutes the suffix for object files. Note that this is
447 handled specially when it immediately follows %g, %u, or %U
448 (with or without a suffix argument) because of the need for
449 those to form complete file names. The handling is such that
450 %O is treated exactly as if it had already been substituted,
451 except that %g, %u, and %U do not currently support additional
452 SUFFIX characters following %O as they would following, for
454 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
455 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
456 and -B options) and -imultilib as necessary.
457 %s current argument is the name of a library or startup file of some sort.
458 Search for that file in a standard list of directories
459 and substitute the full name found.
460 %eSTR Print STR as an error message. STR is terminated by a newline.
461 Use this when inconsistent options are detected.
462 %nSTR Print STR as a notice. STR is terminated by a newline.
463 %x{OPTION} Accumulate an option for %X.
464 %X Output the accumulated linker options specified by compilations.
465 %Y Output the accumulated assembler options specified by compilations.
466 %Z Output the accumulated preprocessor options specified by compilations.
467 %a process ASM_SPEC as a spec.
468 This allows config.h to specify part of the spec for running as.
469 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
470 used here. This can be used to run a post-processor after the
471 assembler has done its job.
472 %D Dump out a -L option for each directory in startfile_prefixes.
473 If multilib_dir is set, extra entries are generated with it affixed.
474 %l process LINK_SPEC as a spec.
475 %L process LIB_SPEC as a spec.
476 %G process LIBGCC_SPEC as a spec.
477 %R Output the concatenation of target_system_root and
478 target_sysroot_suffix.
479 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
480 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
481 %C process CPP_SPEC as a spec.
482 %1 process CC1_SPEC as a spec.
483 %2 process CC1PLUS_SPEC as a spec.
484 %* substitute the variable part of a matched option. (See below.)
485 Note that each comma in the substituted string is replaced by
487 %<S remove all occurrences of -S from the command line.
488 Note - this command is position dependent. % commands in the
489 spec string before this one will see -S, % commands in the
490 spec string after this one will not.
491 %<S* remove all occurrences of all switches beginning with -S from the
494 Call the named function FUNCTION, passing it ARGS. ARGS is
495 first processed as a nested spec string, then split into an
496 argument vector in the usual fashion. The function returns
497 a string which is processed as if it had appeared literally
498 as part of the current spec.
499 %{S} substitutes the -S switch, if that switch was given to CC.
500 If that switch was not specified, this substitutes nothing.
501 Here S is a metasyntactic variable.
502 %{S*} substitutes all the switches specified to CC whose names start
503 with -S. This is used for -o, -I, etc; switches that take
504 arguments. CC considers `-o foo' as being one switch whose
505 name starts with `o'. %{o*} would substitute this text,
506 including the space; thus, two arguments would be generated.
507 %{S*&T*} likewise, but preserve order of S and T options (the order
508 of S and T in the spec is not significant). Can be any number
509 of ampersand-separated variables; for each the wild card is
510 optional. Useful for CPP as %{D*&U*&A*}.
512 %{S:X} substitutes X, if the -S switch was given to CC.
513 %{!S:X} substitutes X, if the -S switch was NOT given to CC.
514 %{S*:X} substitutes X if one or more switches whose names start
515 with -S was given to CC. Normally X is substituted only
516 once, no matter how many such switches appeared. However,
517 if %* appears somewhere in X, then X will be substituted
518 once for each matching switch, with the %* replaced by the
519 part of that switch that matched the '*'.
520 %{.S:X} substitutes X, if processing a file with suffix S.
521 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
522 %{,S:X} substitutes X, if processing a file which will use spec S.
523 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
525 %{S|T:X} substitutes X if either -S or -T was given to CC. This may be
526 combined with '!', '.', ',', and '*' as above binding stronger
528 If %* appears in X, all of the alternatives must be starred, and
529 only the first matching alternative is substituted.
530 %{S:X; if S was given to CC, substitutes X;
531 T:Y; else if T was given to CC, substitutes Y;
532 :D} else substitutes D. There can be as many clauses as you need.
533 This may be combined with '.', '!', ',', '|', and '*' as above.
535 %(Spec) processes a specification defined in a specs file as *Spec:
536 %[Spec] as above, but put __ around -D arguments
538 The conditional text X in a %{S:X} or similar construct may contain
539 other nested % constructs or spaces, or even newlines. They are
540 processed as usual, as described above. Trailing white space in X is
541 ignored. White space may also appear anywhere on the left side of the
542 colon in these constructs, except between . or * and the corresponding
545 The -O, -f, -m, and -W switches are handled specifically in these
546 constructs. If another value of -O or the negated form of a -f, -m, or
547 -W switch is found later in the command line, the earlier switch
548 value is ignored, except with {S*} where S is just one letter; this
549 passes all matching options.
551 The character | at the beginning of the predicate text is used to indicate
552 that a command should be piped to the following command, but only if -pipe
555 Note that it is built into CC which switches take arguments and which
556 do not. You might think it would be useful to generalize this to
557 allow each compiler's spec to say which switches take arguments. But
558 this cannot be done in a consistent fashion. CC cannot even decide
559 which input files have been specified without knowing which switches
560 take arguments, and it must know which input files to compile in order
561 to tell which compilers to run.
563 CC also knows implicitly that arguments starting in `-l' are to be
564 treated as compiler output files, and passed to the linker in their
565 proper position among the other output files. */
567 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
569 /* config.h can define ASM_SPEC to provide extra args to the assembler
570 or extra switch-translations. */
575 /* config.h can define ASM_FINAL_SPEC to run a post processor after
576 the assembler has run. */
577 #ifndef ASM_FINAL_SPEC
578 #define ASM_FINAL_SPEC ""
581 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
582 or extra switch-translations. */
587 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
588 or extra switch-translations. */
593 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
594 or extra switch-translations. */
596 #define CC1PLUS_SPEC ""
599 /* config.h can define LINK_SPEC to provide extra args to the linker
600 or extra switch-translations. */
605 /* config.h can define LIB_SPEC to override the default libraries. */
607 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
612 /* XXX: valid only for GNU ld */
613 /* XXX: should exactly match hooks provided by libmudflap.a */
614 #define MFWRAP_SPEC " %{static: %{fmudflap|fmudflapth: \
615 --wrap=malloc --wrap=free --wrap=calloc --wrap=realloc\
616 --wrap=mmap --wrap=munmap --wrap=alloca\
617 } %{fmudflapth: --wrap=pthread_create\
618 }} %{fmudflap|fmudflapth: --wrap=main}"
621 #define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}"
624 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
627 #if defined(REAL_LIBGCC_SPEC)
628 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
629 #elif defined(LINK_LIBGCC_SPECIAL_1)
630 /* Have gcc do the search for libgcc.a. */
631 #define LIBGCC_SPEC "libgcc.a%s"
633 #define LIBGCC_SPEC "-lgcc"
637 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
638 #ifndef STARTFILE_SPEC
639 #define STARTFILE_SPEC \
640 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
643 /* config.h can define SWITCHES_NEED_SPACES to control which options
644 require spaces between the option and the argument. */
645 #ifndef SWITCHES_NEED_SPACES
646 #define SWITCHES_NEED_SPACES ""
649 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
651 #define ENDFILE_SPEC ""
655 #define LINKER_NAME "collect2"
658 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
660 #ifndef ASM_DEBUG_SPEC
661 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
662 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
663 # define ASM_DEBUG_SPEC \
664 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
665 ? "%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}" \
666 : "%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}")
668 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
669 # define ASM_DEBUG_SPEC "%{g*:--gstabs}"
671 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
672 # define ASM_DEBUG_SPEC "%{g*:--gdwarf2}"
676 #ifndef ASM_DEBUG_SPEC
677 # define ASM_DEBUG_SPEC ""
680 /* Here is the spec for running the linker, after compiling all files. */
682 /* This is overridable by the target in case they need to specify the
683 -lgcc and -lc order specially, yet not require them to override all
684 of LINK_COMMAND_SPEC. */
685 #ifndef LINK_GCC_C_SEQUENCE_SPEC
686 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
689 #ifndef LINK_SSP_SPEC
690 #ifdef TARGET_LIBC_PROVIDES_SSP
691 #define LINK_SSP_SPEC "%{fstack-protector:}"
693 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}"
697 #ifndef LINK_PIE_SPEC
699 #define LINK_PIE_SPEC "%{pie:-pie} "
701 #define LINK_PIE_SPEC "%{pie:} "
705 /* -u* was put back because both BSD and SysV seem to support it. */
706 /* %{static:} simply prevents an error message if the target machine
707 doesn't handle -static. */
708 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
709 scripts which exist in user specified directories, or in standard
711 #ifndef LINK_COMMAND_SPEC
712 #define LINK_COMMAND_SPEC "\
713 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
714 %(linker) %l " LINK_PIE_SPEC "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\
715 %{s} %{t} %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
716 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
717 %{fopenmp:%:include(libgomp.spec)%(link_gomp)} %(mflib)\
718 %{fprofile-arcs|fprofile-generate|coverage:-lgcov}\
719 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
720 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
723 #ifndef LINK_LIBGCC_SPEC
724 /* Generate -L options for startfile prefix list. */
725 # define LINK_LIBGCC_SPEC "%D"
728 #ifndef STARTFILE_PREFIX_SPEC
729 # define STARTFILE_PREFIX_SPEC ""
733 # define SYSROOT_SPEC "--sysroot=%R"
736 #ifndef SYSROOT_SUFFIX_SPEC
737 # define SYSROOT_SUFFIX_SPEC ""
740 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
741 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
744 static const char *asm_debug;
745 static const char *cpp_spec = CPP_SPEC;
746 static const char *cc1_spec = CC1_SPEC;
747 static const char *cc1plus_spec = CC1PLUS_SPEC;
748 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
749 static const char *link_ssp_spec = LINK_SSP_SPEC;
750 static const char *asm_spec = ASM_SPEC;
751 static const char *asm_final_spec = ASM_FINAL_SPEC;
752 static const char *link_spec = LINK_SPEC;
753 static const char *lib_spec = LIB_SPEC;
754 static const char *mfwrap_spec = MFWRAP_SPEC;
755 static const char *mflib_spec = MFLIB_SPEC;
756 static const char *link_gomp_spec = "";
757 static const char *libgcc_spec = LIBGCC_SPEC;
758 static const char *endfile_spec = ENDFILE_SPEC;
759 static const char *startfile_spec = STARTFILE_SPEC;
760 static const char *switches_need_spaces = SWITCHES_NEED_SPACES;
761 static const char *linker_name_spec = LINKER_NAME;
762 static const char *link_command_spec = LINK_COMMAND_SPEC;
763 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
764 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
765 static const char *sysroot_spec = SYSROOT_SPEC;
766 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
767 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
769 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
770 There should be no need to override these in target dependent files,
771 but we need to copy them to the specs file so that newer versions
772 of the GCC driver can correctly drive older tool chains with the
773 appropriate -B options. */
775 /* When cpplib handles traditional preprocessing, get rid of this, and
776 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
777 that we default the front end language better. */
778 static const char *trad_capable_cpp =
779 "cc1 -E %{traditional|ftraditional|traditional-cpp:-traditional-cpp}";
781 /* We don't wrap .d files in %W{} since a missing .d file, and
782 therefore no dependency entry, confuses make into thinking a .o
783 file that happens to exist is up-to-date. */
784 static const char *cpp_unique_options =
785 "%{C|CC:%{!E:%eGCC does not support -C or -CC without -E}}\
786 %{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
787 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
788 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
789 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
790 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
791 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
792 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
793 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
794 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
797 /* This contains cpp options which are common with cc1_options and are passed
798 only when preprocessing only to avoid duplication. We pass the cc1 spec
799 options to the preprocessor so that it the cc1 spec may manipulate
800 options used to set target flags. Those special target flags settings may
801 in turn cause preprocessor symbols to be defined specially. */
802 static const char *cpp_options =
803 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
804 %{f*} %{g*:%{!g0:%{!fno-working-directory:-fworking-directory}}} %{O*}\
805 %{undef} %{save-temps:-fpch-preprocess}";
807 /* This contains cpp options which are not passed when the preprocessor
808 output will be used by another program. */
809 static const char *cpp_debug_options = "%{d*}";
811 /* NB: This is shared amongst all front-ends. */
812 static const char *cc1_options =
813 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
814 %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\
815 %{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}%{!c:%{!S:-auxbase %b}}\
816 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
817 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
818 %{Qn:-fno-ident} %{--help:--help}\
819 %{--target-help:--target-help}\
820 %{--help=*:--help=%(VALUE)}\
821 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
822 %{fsyntax-only:-o %j} %{-param*}\
823 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\
824 %{coverage:-fprofile-arcs -ftest-coverage}";
826 static const char *asm_options =
827 "%{ftarget-help:%:print-asm-header()} \
828 %a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
830 static const char *invoke_as =
831 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
832 "%{!S:-o %|.s |\n as %(asm_options) %|.s %A }";
834 "%{!S:-o %|.s |\n as %(asm_options) %m.s %A }";
837 /* Some compilers have limits on line lengths, and the multilib_select
838 and/or multilib_matches strings can be very long, so we build them at
840 static struct obstack multilib_obstack;
841 static const char *multilib_select;
842 static const char *multilib_matches;
843 static const char *multilib_defaults;
844 static const char *multilib_exclusions;
846 /* Check whether a particular argument is a default argument. */
848 #ifndef MULTILIB_DEFAULTS
849 #define MULTILIB_DEFAULTS { "" }
852 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
854 #ifndef DRIVER_SELF_SPECS
855 #define DRIVER_SELF_SPECS ""
858 /* Adding -fopenmp should imply pthreads. This is particularly important
859 for targets that use different start files and suchlike. */
860 #ifndef GOMP_SELF_SPECS
861 #define GOMP_SELF_SPECS "%{fopenmp: -pthread}"
864 static const char *const driver_self_specs[] = {
865 DRIVER_SELF_SPECS, GOMP_SELF_SPECS
868 #ifndef OPTION_DEFAULT_SPECS
869 #define OPTION_DEFAULT_SPECS { "", "" }
878 static const struct default_spec
879 option_default_specs[] = { OPTION_DEFAULT_SPECS };
883 struct user_specs *next;
884 const char *filename;
887 static struct user_specs *user_specs_head, *user_specs_tail;
889 #ifndef SWITCH_TAKES_ARG
890 #define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR)
893 #ifndef WORD_SWITCH_TAKES_ARG
894 #define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
897 #ifdef HAVE_TARGET_EXECUTABLE_SUFFIX
898 /* This defines which switches stop a full compilation. */
899 #define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \
900 ((CHAR) == 'c' || (CHAR) == 'S')
902 #ifndef SWITCH_CURTAILS_COMPILATION
903 #define SWITCH_CURTAILS_COMPILATION(CHAR) \
904 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR)
908 /* Record the mapping from file suffixes for compilation specs. */
912 const char *suffix; /* Use this compiler for input files
913 whose names end in this suffix. */
915 const char *spec; /* To use this compiler, run this spec. */
917 const char *cpp_spec; /* If non-NULL, substitute this spec
918 for `%C', rather than the usual
920 const int combinable; /* If nonzero, compiler can deal with
921 multiple source files at once (IMA). */
922 const int needs_preprocessing; /* If nonzero, source files need to
923 be run through a preprocessor. */
926 /* Pointer to a vector of `struct compiler' that gives the spec for
927 compiling a file, based on its suffix.
928 A file that does not end in any of these suffixes will be passed
929 unchanged to the loader and nothing else will be done to it.
931 An entry containing two 0s is used to terminate the vector.
933 If multiple entries match a file, the last matching one is used. */
935 static struct compiler *compilers;
937 /* Number of entries in `compilers', not counting the null terminator. */
939 static int n_compilers;
941 /* The default list of file name suffixes and their compilation specs. */
943 static const struct compiler default_compilers[] =
945 /* Add lists of suffixes of known languages here. If those languages
946 were not present when we built the driver, we will hit these copies
947 and be given a more meaningful error than "file not used since
948 linking is not done". */
949 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
950 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
951 {".mii", "#Objective-C++", 0, 0, 0},
952 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
953 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
954 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
955 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
956 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
957 {".f", "#Fortran", 0, 0, 0}, {".for", "#Fortran", 0, 0, 0},
958 {".fpp", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
959 {".FOR", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
960 {".f90", "#Fortran", 0, 0, 0}, {".f95", "#Fortran", 0, 0, 0},
961 {".F90", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
962 {".r", "#Ratfor", 0, 0, 0},
963 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
964 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
965 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
966 /* Next come the entries for C. */
967 {".c", "@c", 0, 1, 1},
969 /* cc1 has an integrated ISO C preprocessor. We should invoke the
970 external preprocessor if -save-temps is given. */
971 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
973 %{traditional|ftraditional:\
974 %eGNU C no longer supports -traditional without -E}\
976 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
977 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\
978 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} \
980 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
981 cc1 %(cpp_unique_options) %(cc1_options)}}}\
982 %{!fsyntax-only:%(invoke_as)}} \
984 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
985 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i}}\
986 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
987 cc1 %(cpp_unique_options) %(cc1_options)}}\
988 %{!fsyntax-only:%(invoke_as)}}}}}}", 0, 1, 1},
990 "%{!E:%e-E or -x required when input is from standard input}\
991 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
992 {".h", "@c-header", 0, 0, 0},
994 /* cc1 has an integrated ISO C preprocessor. We should invoke the
995 external preprocessor if -save-temps is given. */
996 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
998 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
999 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\
1000 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} \
1002 -o %g.s %{!o*:--output-pch=%i.gch}\
1003 %W{o*:--output-pch=%*}%V}\
1004 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
1005 cc1 %(cpp_unique_options) %(cc1_options)\
1006 -o %g.s %{!o*:--output-pch=%i.gch}\
1007 %W{o*:--output-pch=%*}%V}}}}}}", 0, 0, 0},
1008 {".i", "@cpp-output", 0, 1, 0},
1010 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 1, 0},
1011 {".s", "@assembler", 0, 1, 0},
1013 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 1, 0},
1014 {".S", "@assembler-with-cpp", 0, 1, 0},
1015 {"@assembler-with-cpp",
1016 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
1017 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
1018 %{E|M|MM:%(cpp_debug_options)}\
1019 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1020 as %(asm_debug) %(asm_options) %|.s %A }}}}"
1022 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
1023 %{E|M|MM:%(cpp_debug_options)}\
1024 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1025 as %(asm_debug) %(asm_options) %m.s %A }}}}"
1030 /* Mark end of table. */
1034 /* Number of elements in default_compilers, not counting the terminator. */
1036 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
1038 /* A vector of options to give to the linker.
1039 These options are accumulated by %x,
1040 and substituted into the linker command with %X. */
1041 static int n_linker_options;
1042 static char **linker_options;
1044 /* A vector of options to give to the assembler.
1045 These options are accumulated by -Wa,
1046 and substituted into the assembler command with %Y. */
1047 static int n_assembler_options;
1048 static char **assembler_options;
1050 /* A vector of options to give to the preprocessor.
1051 These options are accumulated by -Wp,
1052 and substituted into the preprocessor command with %Z. */
1053 static int n_preprocessor_options;
1054 static char **preprocessor_options;
1056 /* Define how to map long options into short ones. */
1058 /* This structure describes one mapping. */
1061 /* The long option's name. */
1062 const char *const name;
1063 /* The equivalent short option. */
1064 const char *const equivalent;
1065 /* Argument info. A string of flag chars; NULL equals no options.
1066 a => argument required.
1067 o => argument optional.
1068 j => join argument to equivalent, making one word.
1069 * => require other text after NAME as an argument. */
1070 const char *const arg_info;
1073 /* This is the table of mappings. Mappings are tried sequentially
1074 for each option encountered; the first one that matches, wins. */
1076 static const struct option_map option_map[] =
1078 {"--all-warnings", "-Wall", 0},
1079 {"--ansi", "-ansi", 0},
1080 {"--assemble", "-S", 0},
1081 {"--assert", "-A", "a"},
1082 {"--classpath", "-fclasspath=", "aj"},
1083 {"--bootclasspath", "-fbootclasspath=", "aj"},
1084 {"--CLASSPATH", "-fclasspath=", "aj"},
1085 {"--combine", "-combine", 0},
1086 {"--comments", "-C", 0},
1087 {"--comments-in-macros", "-CC", 0},
1088 {"--compile", "-c", 0},
1089 {"--debug", "-g", "oj"},
1090 {"--define-macro", "-D", "aj"},
1091 {"--dependencies", "-M", 0},
1092 {"--dump", "-d", "a"},
1093 {"--dumpbase", "-dumpbase", "a"},
1094 {"--encoding", "-fencoding=", "aj"},
1095 {"--entry", "-e", 0},
1096 {"--extra-warnings", "-W", 0},
1097 {"--extdirs", "-fextdirs=", "aj"},
1098 {"--for-assembler", "-Wa", "a"},
1099 {"--for-linker", "-Xlinker", "a"},
1100 {"--force-link", "-u", "a"},
1101 {"--coverage", "-coverage", 0},
1102 {"--imacros", "-imacros", "a"},
1103 {"--include", "-include", "a"},
1104 {"--include-barrier", "-I-", 0},
1105 {"--include-directory", "-I", "aj"},
1106 {"--include-directory-after", "-idirafter", "a"},
1107 {"--include-prefix", "-iprefix", "a"},
1108 {"--include-with-prefix", "-iwithprefix", "a"},
1109 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
1110 {"--include-with-prefix-after", "-iwithprefix", "a"},
1111 {"--language", "-x", "a"},
1112 {"--library-directory", "-L", "a"},
1113 {"--machine", "-m", "aj"},
1114 {"--machine-", "-m", "*j"},
1115 {"--no-integrated-cpp", "-no-integrated-cpp", 0},
1116 {"--no-line-commands", "-P", 0},
1117 {"--no-precompiled-includes", "-noprecomp", 0},
1118 {"--no-standard-includes", "-nostdinc", 0},
1119 {"--no-standard-libraries", "-nostdlib", 0},
1120 {"--no-warnings", "-w", 0},
1121 {"--optimize", "-O", "oj"},
1122 {"--output", "-o", "a"},
1123 {"--output-class-directory", "-foutput-class-dir=", "ja"},
1124 {"--param", "--param", "a"},
1125 {"--pass-exit-codes", "-pass-exit-codes", 0},
1126 {"--pedantic", "-pedantic", 0},
1127 {"--pedantic-errors", "-pedantic-errors", 0},
1128 {"--pie", "-pie", 0},
1129 {"--pipe", "-pipe", 0},
1130 {"--prefix", "-B", "a"},
1131 {"--preprocess", "-E", 0},
1132 {"--print-search-dirs", "-print-search-dirs", 0},
1133 {"--print-file-name", "-print-file-name=", "aj"},
1134 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
1135 {"--print-missing-file-dependencies", "-MG", 0},
1136 {"--print-multi-lib", "-print-multi-lib", 0},
1137 {"--print-multi-directory", "-print-multi-directory", 0},
1138 {"--print-multi-os-directory", "-print-multi-os-directory", 0},
1139 {"--print-prog-name", "-print-prog-name=", "aj"},
1140 {"--print-sysroot-headers-suffix", "-print-sysroot-headers-suffix", 0},
1141 {"--profile", "-p", 0},
1142 {"--profile-blocks", "-a", 0},
1143 {"--quiet", "-q", 0},
1144 {"--resource", "-fcompile-resource=", "aj"},
1145 {"--save-temps", "-save-temps", 0},
1146 {"--shared", "-shared", 0},
1147 {"--silent", "-q", 0},
1148 {"--specs", "-specs=", "aj"},
1149 {"--static", "-static", 0},
1150 {"--std", "-std=", "aj"},
1151 {"--symbolic", "-symbolic", 0},
1152 {"--sysroot", "--sysroot=", "aj"},
1153 {"--time", "-time", 0},
1154 {"--trace-includes", "-H", 0},
1155 {"--traditional", "-traditional", 0},
1156 {"--traditional-cpp", "-traditional-cpp", 0},
1157 {"--trigraphs", "-trigraphs", 0},
1158 {"--undefine-macro", "-U", "aj"},
1159 {"--user-dependencies", "-MM", 0},
1160 {"--verbose", "-v", 0},
1161 {"--warn-", "-W", "*j"},
1162 {"--write-dependencies", "-MD", 0},
1163 {"--write-user-dependencies", "-MMD", 0},
1168 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1169 static const struct {
1170 const char *const option_found;
1171 const char *const replacements;
1172 } target_option_translations[] =
1174 TARGET_OPTION_TRANSLATE_TABLE,
1179 /* Translate the options described by *ARGCP and *ARGVP.
1180 Make a new vector and store it back in *ARGVP,
1181 and store its length in *ARGVC. */
1184 translate_options (int *argcp, const char *const **argvp)
1188 const char *const *argv = *argvp;
1189 int newvsize = (argc + 2) * 2 * sizeof (const char *);
1190 const char **newv = xmalloc (newvsize);
1194 newv[newindex++] = argv[i++];
1198 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1202 target_option_translations[tott_idx].option_found;
1205 if (strcmp (target_option_translations[tott_idx].option_found,
1212 for (sp = target_option_translations[tott_idx].replacements;
1219 newvsize += spaces * sizeof (const char *);
1220 newv = xrealloc (newv, newvsize);
1222 sp = target_option_translations[tott_idx].replacements;
1231 newv[newindex++] = np;
1232 while (*np != ' ' && *np)
1243 if (target_option_translations[tott_idx].option_found)
1247 /* Translate -- options. */
1248 if (argv[i][0] == '-' && argv[i][1] == '-')
1251 /* Find a mapping that applies to this option. */
1252 for (j = 0; j < ARRAY_SIZE (option_map); j++)
1254 size_t optlen = strlen (option_map[j].name);
1255 size_t arglen = strlen (argv[i]);
1256 size_t complen = arglen > optlen ? optlen : arglen;
1257 const char *arginfo = option_map[j].arg_info;
1262 if (!strncmp (argv[i], option_map[j].name, complen))
1264 const char *arg = 0;
1266 if (arglen < optlen)
1269 for (k = j + 1; k < ARRAY_SIZE (option_map); k++)
1270 if (strlen (option_map[k].name) >= arglen
1271 && !strncmp (argv[i], option_map[k].name, arglen))
1273 error ("ambiguous abbreviation %s", argv[i]);
1277 if (k != ARRAY_SIZE (option_map))
1281 if (arglen > optlen)
1283 /* If the option has an argument, accept that. */
1284 if (argv[i][optlen] == '=')
1285 arg = argv[i] + optlen + 1;
1287 /* If this mapping requires extra text at end of name,
1288 accept that as "argument". */
1289 else if (strchr (arginfo, '*') != 0)
1290 arg = argv[i] + optlen;
1292 /* Otherwise, extra text at end means mismatch.
1293 Try other mappings. */
1298 else if (strchr (arginfo, '*') != 0)
1300 error ("incomplete '%s' option", option_map[j].name);
1304 /* Handle arguments. */
1305 if (strchr (arginfo, 'a') != 0)
1311 error ("missing argument to '%s' option",
1312 option_map[j].name);
1319 else if (strchr (arginfo, '*') != 0)
1321 else if (strchr (arginfo, 'o') == 0)
1324 error ("extraneous argument to '%s' option",
1325 option_map[j].name);
1329 /* Store the translation as one argv elt or as two. */
1330 if (arg != 0 && strchr (arginfo, 'j') != 0)
1331 newv[newindex++] = concat (option_map[j].equivalent, arg,
1335 newv[newindex++] = option_map[j].equivalent;
1336 newv[newindex++] = arg;
1339 newv[newindex++] = option_map[j].equivalent;
1347 /* Handle old-fashioned options--just copy them through,
1348 with their arguments. */
1349 else if (argv[i][0] == '-')
1351 const char *p = argv[i] + 1;
1355 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
1356 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
1357 else if (WORD_SWITCH_TAKES_ARG (p))
1358 nskip += WORD_SWITCH_TAKES_ARG (p);
1359 else if ((c == 'B' || c == 'b' || c == 'x')
1362 else if (! strcmp (p, "Xlinker"))
1364 else if (! strcmp (p, "Xpreprocessor"))
1366 else if (! strcmp (p, "Xassembler"))
1369 /* Watch out for an option at the end of the command line that
1370 is missing arguments, and avoid skipping past the end of the
1372 if (nskip + i > argc)
1377 newv[newindex++] = argv[i++];
1382 /* Ordinary operands, or +e options. */
1383 newv[newindex++] = argv[i++];
1393 skip_whitespace (char *p)
1397 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1398 be considered whitespace. */
1399 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1401 else if (*p == '\n' || *p == ' ' || *p == '\t')
1415 /* Structures to keep track of prefixes to try when looking for files. */
1419 const char *prefix; /* String to prepend to the path. */
1420 struct prefix_list *next; /* Next in linked list. */
1421 int require_machine_suffix; /* Don't use without machine_suffix. */
1422 /* 2 means try both machine_suffix and just_machine_suffix. */
1423 int priority; /* Sort key - priority within list. */
1424 int os_multilib; /* 1 if OS multilib scheme should be used,
1425 0 for GCC multilib scheme. */
1430 struct prefix_list *plist; /* List of prefixes to try */
1431 int max_len; /* Max length of a prefix in PLIST */
1432 const char *name; /* Name of this list (used in config stuff) */
1435 /* List of prefixes to try when looking for executables. */
1437 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1439 /* List of prefixes to try when looking for startup (crt0) files. */
1441 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1443 /* List of prefixes to try when looking for include files. */
1445 static struct path_prefix include_prefixes = { 0, 0, "include" };
1447 /* Suffix to attach to directories searched for commands.
1448 This looks like `MACHINE/VERSION/'. */
1450 static const char *machine_suffix = 0;
1452 /* Suffix to attach to directories searched for commands.
1453 This is just `MACHINE/'. */
1455 static const char *just_machine_suffix = 0;
1457 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1459 static const char *gcc_exec_prefix;
1461 /* Adjusted value of standard_libexec_prefix. */
1463 static const char *gcc_libexec_prefix;
1465 /* Default prefixes to attach to command names. */
1467 #ifndef STANDARD_STARTFILE_PREFIX_1
1468 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1470 #ifndef STANDARD_STARTFILE_PREFIX_2
1471 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1474 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1475 #undef MD_EXEC_PREFIX
1476 #undef MD_STARTFILE_PREFIX
1477 #undef MD_STARTFILE_PREFIX_1
1480 /* If no prefixes defined, use the null string, which will disable them. */
1481 #ifndef MD_EXEC_PREFIX
1482 #define MD_EXEC_PREFIX ""
1484 #ifndef MD_STARTFILE_PREFIX
1485 #define MD_STARTFILE_PREFIX ""
1487 #ifndef MD_STARTFILE_PREFIX_1
1488 #define MD_STARTFILE_PREFIX_1 ""
1491 /* These directories are locations set at configure-time based on the
1492 --prefix option provided to configure. Their initializers are
1493 defined in Makefile.in. These paths are not *directly* used when
1494 gcc_exec_prefix is set because, in that case, we know where the
1495 compiler has been installed, and use paths relative to that
1496 location instead. */
1497 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1498 static const char *const standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1499 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1500 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1502 /* For native compilers, these are well-known paths containing
1503 components that may be provided by the system. For cross
1504 compilers, these paths are not used. */
1505 static const char *const standard_exec_prefix_1 = "/usr/libexec/gcc/";
1506 static const char *const standard_exec_prefix_2 = "/usr/lib/gcc/";
1507 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1508 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1509 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1510 static const char *const standard_startfile_prefix_1
1511 = STANDARD_STARTFILE_PREFIX_1;
1512 static const char *const standard_startfile_prefix_2
1513 = STANDARD_STARTFILE_PREFIX_2;
1515 /* A relative path to be used in finding the location of tools
1516 relative to the driver. */
1517 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1519 /* Subdirectory to use for locating libraries. Set by
1520 set_multilib_dir based on the compilation options. */
1522 static const char *multilib_dir;
1524 /* Subdirectory to use for locating libraries in OS conventions. Set by
1525 set_multilib_dir based on the compilation options. */
1527 static const char *multilib_os_dir;
1529 /* Structure to keep track of the specs that have been defined so far.
1530 These are accessed using %(specname) or %[specname] in a compiler
1535 /* The following 2 fields must be first */
1536 /* to allow EXTRA_SPECS to be initialized */
1537 const char *name; /* name of the spec. */
1538 const char *ptr; /* available ptr if no static pointer */
1540 /* The following fields are not initialized */
1541 /* by EXTRA_SPECS */
1542 const char **ptr_spec; /* pointer to the spec itself. */
1543 struct spec_list *next; /* Next spec in linked list. */
1544 int name_len; /* length of the name */
1545 int alloc_p; /* whether string was allocated */
1548 #define INIT_STATIC_SPEC(NAME,PTR) \
1549 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1551 /* List of statically defined specs. */
1552 static struct spec_list static_specs[] =
1554 INIT_STATIC_SPEC ("asm", &asm_spec),
1555 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1556 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1557 INIT_STATIC_SPEC ("asm_options", &asm_options),
1558 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1559 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1560 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1561 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1562 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1563 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1564 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1565 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1566 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1567 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1568 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec),
1569 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1570 INIT_STATIC_SPEC ("link", &link_spec),
1571 INIT_STATIC_SPEC ("lib", &lib_spec),
1572 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec),
1573 INIT_STATIC_SPEC ("mflib", &mflib_spec),
1574 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec),
1575 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1576 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1577 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces),
1578 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1579 INIT_STATIC_SPEC ("version", &compiler_version),
1580 INIT_STATIC_SPEC ("multilib", &multilib_select),
1581 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1582 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1583 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1584 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1585 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1586 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1587 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1588 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1589 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1590 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1591 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1592 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec),
1593 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1594 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1597 #ifdef EXTRA_SPECS /* additional specs needed */
1598 /* Structure to keep track of just the first two args of a spec_list.
1599 That is all that the EXTRA_SPECS macro gives us. */
1602 const char *const name;
1603 const char *const ptr;
1606 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1607 static struct spec_list *extra_specs = (struct spec_list *) 0;
1610 /* List of dynamically allocates specs that have been defined so far. */
1612 static struct spec_list *specs = (struct spec_list *) 0;
1614 /* List of static spec functions. */
1616 static const struct spec_function static_spec_functions[] =
1618 { "getenv", getenv_spec_function },
1619 { "if-exists", if_exists_spec_function },
1620 { "if-exists-else", if_exists_else_spec_function },
1621 { "replace-outfile", replace_outfile_spec_function },
1622 { "version-compare", version_compare_spec_function },
1623 { "include", include_spec_function },
1624 { "print-asm-header", print_asm_header_spec_function },
1625 #ifdef EXTRA_SPEC_FUNCTIONS
1626 EXTRA_SPEC_FUNCTIONS
1631 static int processing_spec_function;
1633 /* Add appropriate libgcc specs to OBSTACK, taking into account
1634 various permutations of -shared-libgcc, -shared, and such. */
1636 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1638 #ifndef USE_LD_AS_NEEDED
1639 #define USE_LD_AS_NEEDED 0
1643 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1644 const char *static_name, const char *eh_name)
1648 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}"
1649 "%{!static:%{!static-libgcc:"
1650 #if USE_LD_AS_NEEDED
1651 "%{!shared-libgcc:",
1652 static_name, " --as-needed ", shared_name, " --no-as-needed"
1655 shared_name, "%{!shared: ", static_name, "}"
1659 "%{!shared-libgcc:", static_name, " ", eh_name, "}"
1660 "%{shared-libgcc:", shared_name, " ", static_name, "}"
1664 "%{shared-libgcc:", shared_name, "}"
1665 "%{!shared-libgcc:", static_name, "}"
1668 "%{shared:", shared_name, "}"
1673 obstack_grow (obstack, buf, strlen (buf));
1676 #endif /* ENABLE_SHARED_LIBGCC */
1678 /* Initialize the specs lookup routines. */
1683 struct spec_list *next = (struct spec_list *) 0;
1684 struct spec_list *sl = (struct spec_list *) 0;
1688 return; /* Already initialized. */
1691 notice ("Using built-in specs.\n");
1694 extra_specs = xcalloc (sizeof (struct spec_list),
1695 ARRAY_SIZE (extra_specs_1));
1697 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1699 sl = &extra_specs[i];
1700 sl->name = extra_specs_1[i].name;
1701 sl->ptr = extra_specs_1[i].ptr;
1703 sl->name_len = strlen (sl->name);
1704 sl->ptr_spec = &sl->ptr;
1709 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
1710 on ?: in file-scope variable initializations. */
1711 asm_debug = ASM_DEBUG_SPEC;
1713 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1715 sl = &static_specs[i];
1720 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1721 /* ??? If neither -shared-libgcc nor --static-libgcc was
1722 seen, then we should be making an educated guess. Some proposed
1723 heuristics for ELF include:
1725 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1726 program will be doing dynamic loading, which will likely
1727 need the shared libgcc.
1729 (2) If "-ldl", then it's also a fair bet that we're doing
1732 (3) For each ET_DYN we're linking against (either through -lfoo
1733 or /some/path/foo.so), check to see whether it or one of
1734 its dependencies depends on a shared libgcc.
1738 If the runtime is fixed to look for program headers instead
1739 of calling __register_frame_info at all, for each object,
1740 use the shared libgcc if any EH symbol referenced.
1742 If crtstuff is fixed to not invoke __register_frame_info
1743 automatically, for each object, use the shared libgcc if
1744 any non-empty unwind section found.
1746 Doing any of this probably requires invoking an external program to
1747 do the actual object file scanning. */
1749 const char *p = libgcc_spec;
1752 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1753 when given the proper command line arguments. */
1756 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1758 init_gcc_specs (&obstack,
1760 #ifdef USE_LIBUNWIND_EXCEPTIONS
1766 #ifdef USE_LIBUNWIND_EXCEPTIONS
1767 # ifdef HAVE_LD_STATIC_DYNAMIC
1768 " %{!static:-Bstatic} -lunwind %{!static:-Bdynamic}"
1778 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1780 /* Ug. We don't know shared library extensions. Hope that
1781 systems that use this form don't do shared libraries. */
1782 init_gcc_specs (&obstack,
1786 #ifdef USE_LIBUNWIND_EXCEPTIONS
1795 obstack_1grow (&obstack, *p);
1796 in_sep = (*p == ' ');
1801 obstack_1grow (&obstack, '\0');
1802 libgcc_spec = XOBFINISH (&obstack, const char *);
1805 #ifdef USE_AS_TRADITIONAL_FORMAT
1806 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1808 static const char tf[] = "--traditional-format ";
1809 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1810 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1811 asm_spec = XOBFINISH (&obstack, const char *);
1815 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1816 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1817 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1818 link_spec = XOBFINISH (&obstack, const char *);
1824 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1825 removed; If the spec starts with a + then SPEC is added to the end of the
1829 set_spec (const char *name, const char *spec)
1831 struct spec_list *sl;
1832 const char *old_spec;
1833 int name_len = strlen (name);
1836 /* If this is the first call, initialize the statically allocated specs. */
1839 struct spec_list *next = (struct spec_list *) 0;
1840 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1842 sl = &static_specs[i];
1849 /* See if the spec already exists. */
1850 for (sl = specs; sl; sl = sl->next)
1851 if (name_len == sl->name_len && !strcmp (sl->name, name))
1856 /* Not found - make it. */
1857 sl = XNEW (struct spec_list);
1858 sl->name = xstrdup (name);
1859 sl->name_len = name_len;
1860 sl->ptr_spec = &sl->ptr;
1862 *(sl->ptr_spec) = "";
1867 old_spec = *(sl->ptr_spec);
1868 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1869 ? concat (old_spec, spec + 1, NULL)
1874 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1877 /* Free the old spec. */
1878 if (old_spec && sl->alloc_p)
1879 free ((void *) old_spec);
1884 /* Accumulate a command (program name and args), and run it. */
1886 /* Vector of pointers to arguments in the current line of specifications. */
1888 static const char **argbuf;
1890 /* Number of elements allocated in argbuf. */
1892 static int argbuf_length;
1894 /* Number of elements in argbuf currently in use (containing args). */
1896 static int argbuf_index;
1898 /* Position in the argbuf array containing the name of the output file
1899 (the value associated with the "-o" flag). */
1901 static int have_o_argbuf_index = 0;
1903 /* Were the options -c or -S passed. */
1904 static int have_c = 0;
1906 /* Was the option -o passed. */
1907 static int have_o = 0;
1909 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1910 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1913 static struct temp_name {
1914 const char *suffix; /* suffix associated with the code. */
1915 int length; /* strlen (suffix). */
1916 int unique; /* Indicates whether %g or %u/%U was used. */
1917 const char *filename; /* associated filename. */
1918 int filename_length; /* strlen (filename). */
1919 struct temp_name *next;
1922 /* Number of commands executed so far. */
1924 static int execution_count;
1926 /* Number of commands that exited with a signal. */
1928 static int signal_count;
1930 /* Name with which this program was invoked. */
1932 static const char *programname;
1934 /* Allocate the argument vector. */
1940 argbuf = XNEWVEC (const char *, argbuf_length);
1943 /* Clear out the vector of arguments (after a command is executed). */
1951 /* Add one argument to the vector at the end.
1952 This is done when a space is seen or at the end of the line.
1953 If DELETE_ALWAYS is nonzero, the arg is a filename
1954 and the file should be deleted eventually.
1955 If DELETE_FAILURE is nonzero, the arg is a filename
1956 and the file should be deleted if this compilation fails. */
1959 store_arg (const char *arg, int delete_always, int delete_failure)
1961 if (argbuf_index + 1 == argbuf_length)
1962 argbuf = xrealloc (argbuf, (argbuf_length *= 2) * sizeof (const char *));
1964 argbuf[argbuf_index++] = arg;
1965 argbuf[argbuf_index] = 0;
1967 if (strcmp (arg, "-o") == 0)
1968 have_o_argbuf_index = argbuf_index;
1969 if (delete_always || delete_failure)
1970 record_temp_file (arg, delete_always, delete_failure);
1973 /* Load specs from a file name named FILENAME, replacing occurrences of
1974 various different types of line-endings, \r\n, \n\r and just \r, with
1978 load_specs (const char *filename)
1982 struct stat statbuf;
1989 notice ("Reading specs from %s\n", filename);
1991 /* Open and stat the file. */
1992 desc = open (filename, O_RDONLY, 0);
1994 pfatal_with_name (filename);
1995 if (stat (filename, &statbuf) < 0)
1996 pfatal_with_name (filename);
1998 /* Read contents of file into BUFFER. */
1999 buffer = XNEWVEC (char, statbuf.st_size + 1);
2000 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
2002 pfatal_with_name (filename);
2003 buffer[readlen] = 0;
2006 specs = XNEWVEC (char, readlen + 1);
2008 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
2014 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
2016 else if (*(buffer_p + 1) == '\n') /* \r\n */
2030 /* Read compilation specs from a file named FILENAME,
2031 replacing the default ones.
2033 A suffix which starts with `*' is a definition for
2034 one of the machine-specific sub-specs. The "suffix" should be
2035 *asm, *cc1, *cpp, *link, *startfile, etc.
2036 The corresponding spec is stored in asm_spec, etc.,
2037 rather than in the `compilers' vector.
2039 Anything invalid in the file is a fatal error. */
2042 read_specs (const char *filename, int main_p)
2047 buffer = load_specs (filename);
2049 /* Scan BUFFER for specs, putting them in the vector. */
2055 char *in, *out, *p1, *p2, *p3;
2057 /* Advance P in BUFFER to the next nonblank nocomment line. */
2058 p = skip_whitespace (p);
2062 /* Is this a special command that starts with '%'? */
2063 /* Don't allow this for the main specs file, since it would
2064 encourage people to overwrite it. */
2065 if (*p == '%' && !main_p)
2068 while (*p && *p != '\n')
2074 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
2075 && (p1[sizeof "%include" - 1] == ' '
2076 || p1[sizeof "%include" - 1] == '\t'))
2080 p1 += sizeof ("%include");
2081 while (*p1 == ' ' || *p1 == '\t')
2084 if (*p1++ != '<' || p[-2] != '>')
2085 fatal ("specs %%include syntax malformed after %ld characters",
2086 (long) (p1 - buffer + 1));
2089 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
2090 read_specs (new_filename ? new_filename : p1, FALSE);
2093 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
2094 && (p1[sizeof "%include_noerr" - 1] == ' '
2095 || p1[sizeof "%include_noerr" - 1] == '\t'))
2099 p1 += sizeof "%include_noerr";
2100 while (*p1 == ' ' || *p1 == '\t')
2103 if (*p1++ != '<' || p[-2] != '>')
2104 fatal ("specs %%include syntax malformed after %ld characters",
2105 (long) (p1 - buffer + 1));
2108 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
2110 read_specs (new_filename, FALSE);
2111 else if (verbose_flag)
2112 notice ("could not find specs file %s\n", p1);
2115 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
2116 && (p1[sizeof "%rename" - 1] == ' '
2117 || p1[sizeof "%rename" - 1] == '\t'))
2120 struct spec_list *sl;
2121 struct spec_list *newsl;
2123 /* Get original name. */
2124 p1 += sizeof "%rename";
2125 while (*p1 == ' ' || *p1 == '\t')
2128 if (! ISALPHA ((unsigned char) *p1))
2129 fatal ("specs %%rename syntax malformed after %ld characters",
2130 (long) (p1 - buffer));
2133 while (*p2 && !ISSPACE ((unsigned char) *p2))
2136 if (*p2 != ' ' && *p2 != '\t')
2137 fatal ("specs %%rename syntax malformed after %ld characters",
2138 (long) (p2 - buffer));
2142 while (*p2 == ' ' || *p2 == '\t')
2145 if (! ISALPHA ((unsigned char) *p2))
2146 fatal ("specs %%rename syntax malformed after %ld characters",
2147 (long) (p2 - buffer));
2149 /* Get new spec name. */
2151 while (*p3 && !ISSPACE ((unsigned char) *p3))
2155 fatal ("specs %%rename syntax malformed after %ld characters",
2156 (long) (p3 - buffer));
2159 for (sl = specs; sl; sl = sl->next)
2160 if (name_len == sl->name_len && !strcmp (sl->name, p1))
2164 fatal ("specs %s spec was not found to be renamed", p1);
2166 if (strcmp (p1, p2) == 0)
2169 for (newsl = specs; newsl; newsl = newsl->next)
2170 if (strcmp (newsl->name, p2) == 0)
2171 fatal ("%s: attempt to rename spec '%s' to already defined spec '%s'",
2176 notice ("rename spec %s to %s\n", p1, p2);
2178 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
2182 set_spec (p2, *(sl->ptr_spec));
2184 free ((void *) *(sl->ptr_spec));
2186 *(sl->ptr_spec) = "";
2191 fatal ("specs unknown %% command after %ld characters",
2192 (long) (p1 - buffer));
2195 /* Find the colon that should end the suffix. */
2197 while (*p1 && *p1 != ':' && *p1 != '\n')
2200 /* The colon shouldn't be missing. */
2202 fatal ("specs file malformed after %ld characters",
2203 (long) (p1 - buffer));
2205 /* Skip back over trailing whitespace. */
2207 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
2210 /* Copy the suffix to a string. */
2211 suffix = save_string (p, p2 - p);
2212 /* Find the next line. */
2213 p = skip_whitespace (p1 + 1);
2215 fatal ("specs file malformed after %ld characters",
2216 (long) (p - buffer));
2219 /* Find next blank line or end of string. */
2220 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
2223 /* Specs end at the blank line and do not include the newline. */
2224 spec = save_string (p, p1 - p);
2227 /* Delete backslash-newline sequences from the spec. */
2232 if (in[0] == '\\' && in[1] == '\n')
2234 else if (in[0] == '#')
2235 while (*in && *in != '\n')
2243 if (suffix[0] == '*')
2245 if (! strcmp (suffix, "*link_command"))
2246 link_command_spec = spec;
2248 set_spec (suffix + 1, spec);
2252 /* Add this pair to the vector. */
2254 = xrealloc (compilers,
2255 (n_compilers + 2) * sizeof (struct compiler));
2257 compilers[n_compilers].suffix = suffix;
2258 compilers[n_compilers].spec = spec;
2260 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2264 link_command_spec = spec;
2267 if (link_command_spec == 0)
2268 fatal ("spec file has no spec for linking");
2271 /* Record the names of temporary files we tell compilers to write,
2272 and delete them at the end of the run. */
2274 /* This is the common prefix we use to make temp file names.
2275 It is chosen once for each run of this program.
2276 It is substituted into a spec by %g or %j.
2277 Thus, all temp file names contain this prefix.
2278 In practice, all temp file names start with this prefix.
2280 This prefix comes from the envvar TMPDIR if it is defined;
2281 otherwise, from the P_tmpdir macro if that is defined;
2282 otherwise, in /usr/tmp or /tmp;
2283 or finally the current directory if all else fails. */
2285 static const char *temp_filename;
2287 /* Length of the prefix. */
2289 static int temp_filename_length;
2291 /* Define the list of temporary files to delete. */
2296 struct temp_file *next;
2299 /* Queue of files to delete on success or failure of compilation. */
2300 static struct temp_file *always_delete_queue;
2301 /* Queue of files to delete on failure of compilation. */
2302 static struct temp_file *failure_delete_queue;
2304 /* Record FILENAME as a file to be deleted automatically.
2305 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2306 otherwise delete it in any case.
2307 FAIL_DELETE nonzero means delete it if a compilation step fails;
2308 otherwise delete it in any case. */
2311 record_temp_file (const char *filename, int always_delete, int fail_delete)
2313 char *const name = xstrdup (filename);
2317 struct temp_file *temp;
2318 for (temp = always_delete_queue; temp; temp = temp->next)
2319 if (! strcmp (name, temp->name))
2322 temp = XNEW (struct temp_file);
2323 temp->next = always_delete_queue;
2325 always_delete_queue = temp;
2332 struct temp_file *temp;
2333 for (temp = failure_delete_queue; temp; temp = temp->next)
2334 if (! strcmp (name, temp->name))
2337 temp = XNEW (struct temp_file);
2338 temp->next = failure_delete_queue;
2340 failure_delete_queue = temp;
2346 /* Delete all the temporary files whose names we previously recorded. */
2348 #ifndef DELETE_IF_ORDINARY
2349 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2352 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2353 if (unlink (NAME) < 0) \
2355 perror_with_name (NAME); \
2360 delete_if_ordinary (const char *name)
2366 printf ("Delete %s? (y or n) ", name);
2370 while ((c = getchar ()) != '\n' && c != EOF)
2373 if (i == 'y' || i == 'Y')
2375 DELETE_IF_ORDINARY (name, st, verbose_flag);
2379 delete_temp_files (void)
2381 struct temp_file *temp;
2383 for (temp = always_delete_queue; temp; temp = temp->next)
2384 delete_if_ordinary (temp->name);
2385 always_delete_queue = 0;
2388 /* Delete all the files to be deleted on error. */
2391 delete_failure_queue (void)
2393 struct temp_file *temp;
2395 for (temp = failure_delete_queue; temp; temp = temp->next)
2396 delete_if_ordinary (temp->name);
2400 clear_failure_queue (void)
2402 failure_delete_queue = 0;
2405 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2407 If DO_MULTI is true iterate over the paths twice, first with multilib
2408 suffix then without, otherwise iterate over the paths once without
2409 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2410 to avoid visiting the same path twice, but we could do better. For
2411 instance, /usr/lib/../lib is considered different from /usr/lib.
2412 At least EXTRA_SPACE chars past the end of the path passed to
2413 CALLBACK are available for use by the callback.
2414 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2416 Returns the value returned by CALLBACK. */
2419 for_each_path (const struct path_prefix *paths,
2422 void *(*callback) (char *, void *),
2423 void *callback_info)
2425 struct prefix_list *pl;
2426 const char *multi_dir = NULL;
2427 const char *multi_os_dir = NULL;
2428 const char *multi_suffix;
2429 const char *just_multi_suffix;
2432 bool skip_multi_dir = false;
2433 bool skip_multi_os_dir = false;
2435 multi_suffix = machine_suffix;
2436 just_multi_suffix = just_machine_suffix;
2437 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0)
2439 multi_dir = concat (multilib_dir, dir_separator_str, NULL);
2440 multi_suffix = concat (multi_suffix, multi_dir, NULL);
2441 just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL);
2443 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0)
2444 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL);
2448 size_t multi_dir_len = 0;
2449 size_t multi_os_dir_len = 0;
2451 size_t just_suffix_len;
2455 multi_dir_len = strlen (multi_dir);
2457 multi_os_dir_len = strlen (multi_os_dir);
2458 suffix_len = strlen (multi_suffix);
2459 just_suffix_len = strlen (just_multi_suffix);
2463 len = paths->max_len + extra_space + 1;
2464 if (suffix_len > multi_os_dir_len)
2467 len += multi_os_dir_len;
2468 path = XNEWVEC (char, len);
2471 for (pl = paths->plist; pl != 0; pl = pl->next)
2473 len = strlen (pl->prefix);
2474 memcpy (path, pl->prefix, len);
2476 /* Look first in MACHINE/VERSION subdirectory. */
2477 if (!skip_multi_dir)
2479 memcpy (path + len, multi_suffix, suffix_len + 1);
2480 ret = callback (path, callback_info);
2485 /* Some paths are tried with just the machine (ie. target)
2486 subdir. This is used for finding as, ld, etc. */
2488 && pl->require_machine_suffix == 2)
2490 memcpy (path + len, just_multi_suffix, just_suffix_len + 1);
2491 ret = callback (path, callback_info);
2496 /* Now try the base path. */
2497 if (!pl->require_machine_suffix
2498 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir))
2500 const char *this_multi;
2501 size_t this_multi_len;
2503 if (pl->os_multilib)
2505 this_multi = multi_os_dir;
2506 this_multi_len = multi_os_dir_len;
2510 this_multi = multi_dir;
2511 this_multi_len = multi_dir_len;
2515 memcpy (path + len, this_multi, this_multi_len + 1);
2519 ret = callback (path, callback_info);
2527 if (multi_dir == NULL && multi_os_dir == NULL)
2530 /* Run through the paths again, this time without multilibs.
2531 Don't repeat any we have already seen. */
2534 free ((char *) multi_dir);
2536 free ((char *) multi_suffix);
2537 multi_suffix = machine_suffix;
2538 free ((char *) just_multi_suffix);
2539 just_multi_suffix = just_machine_suffix;
2542 skip_multi_dir = true;
2545 free ((char *) multi_os_dir);
2546 multi_os_dir = NULL;
2549 skip_multi_os_dir = true;
2554 free ((char *) multi_dir);
2555 free ((char *) multi_suffix);
2556 free ((char *) just_multi_suffix);
2559 free ((char *) multi_os_dir);
2565 /* Callback for build_search_list. Adds path to obstack being built. */
2567 struct add_to_obstack_info {
2574 add_to_obstack (char *path, void *data)
2576 struct add_to_obstack_info *info = data;
2578 if (info->check_dir && !is_directory (path, false))
2581 if (!info->first_time)
2582 obstack_1grow (info->ob, PATH_SEPARATOR);
2584 obstack_grow (info->ob, path, strlen (path));
2586 info->first_time = false;
2590 /* Build a list of search directories from PATHS.
2591 PREFIX is a string to prepend to the list.
2592 If CHECK_DIR_P is true we ensure the directory exists.
2593 If DO_MULTI is true, multilib paths are output first, then
2595 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2596 It is also used by the --print-search-dirs flag. */
2599 build_search_list (const struct path_prefix *paths, const char *prefix,
2600 bool check_dir, bool do_multi)
2602 struct add_to_obstack_info info;
2604 info.ob = &collect_obstack;
2605 info.check_dir = check_dir;
2606 info.first_time = true;
2608 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2609 obstack_1grow (&collect_obstack, '=');
2611 for_each_path (paths, do_multi, 0, add_to_obstack, &info);
2613 obstack_1grow (&collect_obstack, '\0');
2614 return XOBFINISH (&collect_obstack, char *);
2617 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2621 putenv_from_prefixes (const struct path_prefix *paths, const char *env_var,
2624 putenv (build_search_list (paths, env_var, true, do_multi));
2627 /* Check whether NAME can be accessed in MODE. This is like access,
2628 except that it never considers directories to be executable. */
2631 access_check (const char *name, int mode)
2637 if (stat (name, &st) < 0
2638 || S_ISDIR (st.st_mode))
2642 return access (name, mode);
2645 /* Callback for find_a_file. Appends the file name to the directory
2646 path. If the resulting file exists in the right mode, return the
2647 full pathname to the file. */
2649 struct file_at_path_info {
2658 file_at_path (char *path, void *data)
2660 struct file_at_path_info *info = data;
2661 size_t len = strlen (path);
2663 memcpy (path + len, info->name, info->name_len);
2664 len += info->name_len;
2666 /* Some systems have a suffix for executable files.
2667 So try appending that first. */
2668 if (info->suffix_len)
2670 memcpy (path + len, info->suffix, info->suffix_len + 1);
2671 if (access_check (path, info->mode) == 0)
2676 if (access_check (path, info->mode) == 0)
2682 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2683 access to check permissions. If DO_MULTI is true, search multilib
2684 paths then non-multilib paths, otherwise do not search multilib paths.
2685 Return 0 if not found, otherwise return its name, allocated with malloc. */
2688 find_a_file (const struct path_prefix *pprefix, const char *name, int mode,
2691 struct file_at_path_info info;
2693 #ifdef DEFAULT_ASSEMBLER
2694 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2695 return xstrdup (DEFAULT_ASSEMBLER);
2698 #ifdef DEFAULT_LINKER
2699 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2700 return xstrdup (DEFAULT_LINKER);
2703 /* Determine the filename to execute (special case for absolute paths). */
2705 if (IS_ABSOLUTE_PATH (name))
2707 if (access (name, mode) == 0)
2708 return xstrdup (name);
2714 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "";
2715 info.name_len = strlen (info.name);
2716 info.suffix_len = strlen (info.suffix);
2719 return for_each_path (pprefix, do_multi, info.name_len + info.suffix_len,
2720 file_at_path, &info);
2723 /* Ranking of prefixes in the sort list. -B prefixes are put before
2726 enum path_prefix_priority
2728 PREFIX_PRIORITY_B_OPT,
2729 PREFIX_PRIORITY_LAST
2732 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2733 order according to PRIORITY. Within each PRIORITY, new entries are
2736 If WARN is nonzero, we will warn if no file is found
2737 through this prefix. WARN should point to an int
2738 which will be set to 1 if this entry is used.
2740 COMPONENT is the value to be passed to update_path.
2742 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2743 the complete value of machine_suffix.
2744 2 means try both machine_suffix and just_machine_suffix. */
2747 add_prefix (struct path_prefix *pprefix, const char *prefix,
2748 const char *component, /* enum prefix_priority */ int priority,
2749 int require_machine_suffix, int os_multilib)
2751 struct prefix_list *pl, **prev;
2754 for (prev = &pprefix->plist;
2755 (*prev) != NULL && (*prev)->priority <= priority;
2756 prev = &(*prev)->next)
2759 /* Keep track of the longest prefix. */
2761 prefix = update_path (prefix, component);
2762 len = strlen (prefix);
2763 if (len > pprefix->max_len)
2764 pprefix->max_len = len;
2766 pl = XNEW (struct prefix_list);
2767 pl->prefix = prefix;
2768 pl->require_machine_suffix = require_machine_suffix;
2769 pl->priority = priority;
2770 pl->os_multilib = os_multilib;
2772 /* Insert after PREV. */
2777 /* Same as add_prefix, but prepending target_system_root to prefix. */
2778 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2780 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2781 const char *component,
2782 /* enum prefix_priority */ int priority,
2783 int require_machine_suffix, int os_multilib)
2785 if (!IS_ABSOLUTE_PATH (prefix))
2786 fatal ("system path '%s' is not absolute", prefix);
2788 if (target_system_root)
2790 if (target_sysroot_suffix)
2791 prefix = concat (target_sysroot_suffix, prefix, NULL);
2792 prefix = concat (target_system_root, prefix, NULL);
2794 /* We have to override this because GCC's notion of sysroot
2795 moves along with GCC. */
2799 add_prefix (pprefix, prefix, component, priority,
2800 require_machine_suffix, os_multilib);
2803 /* Execute the command specified by the arguments on the current line of spec.
2804 When using pipes, this includes several piped-together commands
2805 with `|' between them.
2807 Return 0 if successful, -1 if failed. */
2813 int n_commands; /* # of command. */
2815 struct pex_obj *pex;
2818 const char *prog; /* program name. */
2819 const char **argv; /* vector of args. */
2822 struct command *commands; /* each command buffer with above info. */
2824 gcc_assert (!processing_spec_function);
2826 /* Count # of piped commands. */
2827 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2828 if (strcmp (argbuf[i], "|") == 0)
2831 /* Get storage for each command. */
2832 commands = alloca (n_commands * sizeof (struct command));
2834 /* Split argbuf into its separate piped processes,
2835 and record info about each one.
2836 Also search for the programs that are to be run. */
2838 commands[0].prog = argbuf[0]; /* first command. */
2839 commands[0].argv = &argbuf[0];
2840 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false);
2843 commands[0].argv[0] = string;
2845 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2846 if (strcmp (argbuf[i], "|") == 0)
2847 { /* each command. */
2848 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2849 fatal ("-pipe not supported");
2851 argbuf[i] = 0; /* termination of command args. */
2852 commands[n_commands].prog = argbuf[i + 1];
2853 commands[n_commands].argv = &argbuf[i + 1];
2854 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2857 commands[n_commands].argv[0] = string;
2861 argbuf[argbuf_index] = 0;
2863 /* If -v, print what we are about to do, and maybe query. */
2867 /* For help listings, put a blank line between sub-processes. */
2868 if (print_help_list)
2869 fputc ('\n', stderr);
2871 /* Print each piped command as a separate line. */
2872 for (i = 0; i < n_commands; i++)
2874 const char *const *j;
2876 if (verbose_only_flag)
2878 for (j = commands[i].argv; *j; j++)
2881 fprintf (stderr, " \"");
2882 for (p = *j; *p; ++p)
2884 if (*p == '"' || *p == '\\' || *p == '$')
2885 fputc ('\\', stderr);
2888 fputc ('"', stderr);
2892 for (j = commands[i].argv; *j; j++)
2893 fprintf (stderr, " %s", *j);
2895 /* Print a pipe symbol after all but the last command. */
2896 if (i + 1 != n_commands)
2897 fprintf (stderr, " |");
2898 fprintf (stderr, "\n");
2901 if (verbose_only_flag != 0)
2903 /* verbose_only_flag should act as if the spec was
2904 executed, so increment execution_count before
2905 returning. This prevents spurious warnings about
2906 unused linker input files, etc. */
2911 notice ("\nGo ahead? (y or n) ");
2915 while (getchar () != '\n')
2918 if (i != 'y' && i != 'Y')
2923 #ifdef ENABLE_VALGRIND_CHECKING
2924 /* Run the each command through valgrind. To simplify prepending the
2925 path to valgrind and the option "-q" (for quiet operation unless
2926 something triggers), we allocate a separate argv array. */
2928 for (i = 0; i < n_commands; i++)
2934 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2937 argv = alloca ((argc + 3) * sizeof (char *));
2939 argv[0] = VALGRIND_PATH;
2941 for (j = 2; j < argc + 2; j++)
2942 argv[j] = commands[i].argv[j - 2];
2945 commands[i].argv = argv;
2946 commands[i].prog = argv[0];
2950 /* Run each piped subprocess. */
2952 pex = pex_init (PEX_USE_PIPES | (report_times ? PEX_RECORD_TIMES : 0),
2953 programname, temp_filename);
2955 pfatal_with_name (_("pex_init failed"));
2957 for (i = 0; i < n_commands; i++)
2961 const char *string = commands[i].argv[0];
2963 errmsg = pex_run (pex,
2964 ((i + 1 == n_commands ? PEX_LAST : 0)
2965 | (string == commands[i].prog ? PEX_SEARCH : 0)),
2966 string, (char * const *) commands[i].argv,
2975 pfatal_with_name (errmsg);
2979 if (string != commands[i].prog)
2980 free ((void *) string);
2985 /* Wait for all the subprocesses to finish. */
2989 struct pex_time *times = NULL;
2992 statuses = alloca (n_commands * sizeof (int));
2993 if (!pex_get_status (pex, n_commands, statuses))
2994 pfatal_with_name (_("failed to get exit status"));
2998 times = alloca (n_commands * sizeof (struct pex_time));
2999 if (!pex_get_times (pex, n_commands, times))
3000 pfatal_with_name (_("failed to get process times"));
3005 for (i = 0; i < n_commands; ++i)
3007 int status = statuses[i];
3009 if (WIFSIGNALED (status))
3012 /* SIGPIPE is a special case. It happens in -pipe mode
3013 when the compiler dies before the preprocessor is done,
3014 or the assembler dies before the compiler is done.
3015 There's generally been an error already, and this is
3016 just fallout. So don't generate another error unless
3017 we would otherwise have succeeded. */
3018 if (WTERMSIG (status) == SIGPIPE
3019 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
3027 Internal error: %s (program %s)\n\
3028 Please submit a full bug report.\n\
3029 See %s for instructions.",
3030 strsignal (WTERMSIG (status)), commands[i].prog,
3033 else if (WIFEXITED (status)
3034 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
3036 if (WEXITSTATUS (status) > greatest_status)
3037 greatest_status = WEXITSTATUS (status);
3043 struct pex_time *pt = ×[i];
3046 ut = ((double) pt->user_seconds
3047 + (double) pt->user_microseconds / 1.0e6);
3048 st = ((double) pt->system_seconds
3049 + (double) pt->system_microseconds / 1.0e6);
3052 notice ("# %s %.2f %.2f\n", commands[i].prog, ut, st);
3060 /* Find all the switches given to us
3061 and make a vector describing them.
3062 The elements of the vector are strings, one per switch given.
3063 If a switch uses following arguments, then the `part1' field
3064 is the switch itself and the `args' field
3065 is a null-terminated vector containing the following arguments.
3066 The `live_cond' field is:
3068 1 if the switch is true in a conditional spec,
3069 -1 if false (overridden by a later switch)
3070 -2 if this switch should be ignored (used in %<S)
3071 The `validated' field is nonzero if any spec has looked at this switch;
3072 if it remains zero at the end of the run, it must be meaningless. */
3075 #define SWITCH_FALSE -1
3076 #define SWITCH_IGNORE -2
3077 #define SWITCH_LIVE 1
3084 unsigned char validated;
3085 unsigned char ordering;
3088 static struct switchstr *switches;
3090 static int n_switches;
3092 /* Language is one of three things:
3094 1) The name of a real programming language.
3095 2) NULL, indicating that no one has figured out
3097 3) '*', indicating that the file should be passed
3102 const char *language;
3103 struct compiler *incompiler;
3108 /* Also a vector of input files specified. */
3110 static struct infile *infiles;
3114 /* True if multiple input files are being compiled to a single
3117 static bool combine_inputs;
3119 /* This counts the number of libraries added by lang_specific_driver, so that
3120 we can tell if there were any user supplied any files or libraries. */
3122 static int added_libraries;
3124 /* And a vector of corresponding output files is made up later. */
3126 const char **outfiles;
3128 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3130 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
3131 is true if we should look for an executable suffix. DO_OBJ
3132 is true if we should look for an object suffix. */
3135 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
3136 int do_obj ATTRIBUTE_UNUSED)
3138 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3146 len = strlen (name);
3148 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3149 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
3150 if (do_obj && len > 2
3151 && name[len - 2] == '.'
3152 && name[len - 1] == 'o')
3154 obstack_grow (&obstack, name, len - 2);
3155 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
3156 name = XOBFINISH (&obstack, const char *);
3160 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3161 /* If there is no filetype, make it the executable suffix (which includes
3162 the "."). But don't get confused if we have just "-o". */
3163 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
3166 for (i = len - 1; i >= 0; i--)
3167 if (IS_DIR_SEPARATOR (name[i]))
3170 for (i++; i < len; i++)
3174 obstack_grow (&obstack, name, len);
3175 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
3176 strlen (TARGET_EXECUTABLE_SUFFIX));
3177 name = XOBFINISH (&obstack, const char *);
3184 /* Display the command line switches accepted by gcc. */
3188 printf (_("Usage: %s [options] file...\n"), programname);
3189 fputs (_("Options:\n"), stdout);
3191 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
3192 fputs (_(" --help Display this information\n"), stdout);
3193 fputs (_(" --target-help Display target specific command line options\n"), stdout);
3194 fputs (_(" --help={target|optimizers|warnings|undocumented|params}[,{[^]joined|[^]separate}]\n"), stdout);
3195 fputs (_(" Display specific types of command line options\n"), stdout);
3197 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
3198 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
3199 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
3200 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
3201 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
3202 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
3203 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
3204 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
3205 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
3207 -print-multi-lib Display the mapping between command line options and\n\
3208 multiple library search directories\n"), stdout);
3209 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
3210 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout);
3211 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3212 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3213 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3214 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
3215 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
3216 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3217 fputs (_(" -combine Pass multiple source files to compiler at once\n"), stdout);
3218 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3219 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3220 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3221 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3222 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3224 --sysroot=<directory> Use <directory> as the root directory for headers\n\
3225 and libraries\n"), stdout);
3226 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3227 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
3228 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
3229 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3230 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3231 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3232 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3233 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3234 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3236 -x <language> Specify the language of the following input files\n\
3237 Permissible languages include: c c++ assembler none\n\
3238 'none' means revert to the default behavior of\n\
3239 guessing the language based on the file's extension\n\
3243 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3244 passed on to the various sub-processes invoked by %s. In order to pass\n\
3245 other options on to these processes the -W<letter> options must be used.\n\
3248 /* The rest of the options are displayed by invocations of the various
3253 add_preprocessor_option (const char *option, int len)
3255 n_preprocessor_options++;
3257 if (! preprocessor_options)
3258 preprocessor_options = XNEWVEC (char *, n_preprocessor_options);
3260 preprocessor_options = xrealloc (preprocessor_options,
3261 n_preprocessor_options * sizeof (char *));
3263 preprocessor_options [n_preprocessor_options - 1] =
3264 save_string (option, len);
3268 add_assembler_option (const char *option, int len)
3270 n_assembler_options++;
3272 if (! assembler_options)
3273 assembler_options = XNEWVEC (char *, n_assembler_options);
3275 assembler_options = xrealloc (assembler_options,
3276 n_assembler_options * sizeof (char *));
3278 assembler_options [n_assembler_options - 1] = save_string (option, len);
3282 add_linker_option (const char *option, int len)
3286 if (! linker_options)
3287 linker_options = XNEWVEC (char *, n_linker_options);
3289 linker_options = xrealloc (linker_options,
3290 n_linker_options * sizeof (char *));
3292 linker_options [n_linker_options - 1] = save_string (option, len);
3295 /* Create the vector `switches' and its contents.
3296 Store its length in `n_switches'. */
3299 process_command (int argc, const char **argv)
3304 const char *spec_lang = 0;
3305 int last_language_n_infiles;
3306 int lang_n_infiles = 0;
3307 #ifdef MODIFY_TARGET_NAME
3308 int is_modify_target_name;
3311 const char *tooldir_prefix;
3313 GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3317 added_libraries = 0;
3319 /* Figure compiler version from version string. */
3321 compiler_version = temp1 = xstrdup (version_string);
3323 for (; *temp1; ++temp1)
3332 /* If there is a -V or -b option (or both), process it now, before
3333 trying to interpret the rest of the command line.
3334 Use heuristic that all configuration names must have at least
3335 one dash '-'. This allows us to pass options starting with -b. */
3336 if (argc > 1 && argv[1][0] == '-'
3337 && (argv[1][1] == 'V' ||
3338 ((argv[1][1] == 'b') && (NULL != strchr(argv[1] + 2,'-')))))
3340 const char *new_version = DEFAULT_TARGET_VERSION;
3341 const char *new_machine = DEFAULT_TARGET_MACHINE;
3342 const char *progname = argv[0];
3347 while (argc > 1 && argv[1][0] == '-'
3348 && (argv[1][1] == 'V' ||
3349 ((argv[1][1] == 'b') && ( NULL != strchr(argv[1] + 2,'-')))))
3351 char opt = argv[1][1];
3353 if (argv[1][2] != '\0')
3366 fatal ("'-%c' option must have argument", opt);
3373 for (baselen = strlen (progname); baselen > 0; baselen--)
3374 if (IS_DIR_SEPARATOR (progname[baselen-1]))
3376 new_argv0 = xmemdup (progname, baselen,
3377 baselen + concat_length (new_version, new_machine,
3378 "-gcc-", NULL) + 1);
3379 strcpy (new_argv0 + baselen, new_machine);
3380 strcat (new_argv0, "-gcc-");
3381 strcat (new_argv0, new_version);
3383 new_argv = xmemdup (argv, (argc + 1) * sizeof (argv[0]),
3384 (argc + 1) * sizeof (argv[0]));
3385 new_argv[0] = new_argv0;
3387 execvp (new_argv0, new_argv);
3388 fatal ("couldn't run '%s': %s", new_argv0, xstrerror (errno));
3391 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3392 see if we can create it from the pathname specified in argv[0]. */
3394 gcc_libexec_prefix = standard_libexec_prefix;
3396 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3397 if (!gcc_exec_prefix)
3399 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
3400 standard_exec_prefix);
3401 gcc_libexec_prefix = make_relative_prefix (argv[0],
3402 standard_bindir_prefix,
3403 standard_libexec_prefix);
3404 if (gcc_exec_prefix)
3405 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3409 /* make_relative_prefix requires a program name, but
3410 GCC_EXEC_PREFIX is typically a directory name with a trailing
3411 / (which is ignored by make_relative_prefix), so append a
3413 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL);
3414 gcc_libexec_prefix = make_relative_prefix (tmp_prefix,
3415 standard_exec_prefix,
3416 standard_libexec_prefix);
3418 /* The path is unrelocated, so fallback to the original setting. */
3419 if (!gcc_libexec_prefix)
3420 gcc_libexec_prefix = standard_libexec_prefix;
3426 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3427 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3428 or an automatically created GCC_EXEC_PREFIX from argv[0]. */
3430 if (gcc_exec_prefix)
3432 int len = strlen (gcc_exec_prefix);
3434 if (len > (int) sizeof ("/lib/gcc/") - 1
3435 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3437 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3438 if (IS_DIR_SEPARATOR (*temp)
3439 && strncmp (temp + 1, "lib", 3) == 0
3440 && IS_DIR_SEPARATOR (temp[4])
3441 && strncmp (temp + 5, "gcc", 3) == 0)
3442 len -= sizeof ("/lib/gcc/") - 1;
3445 set_std_prefix (gcc_exec_prefix, len);
3446 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3447 PREFIX_PRIORITY_LAST, 0, 0);
3448 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3449 PREFIX_PRIORITY_LAST, 0, 0);
3452 /* COMPILER_PATH and LIBRARY_PATH have values
3453 that are lists of directory names with colons. */
3455 GET_ENVIRONMENT (temp, "COMPILER_PATH");
3458 const char *startp, *endp;
3459 char *nstore = alloca (strlen (temp) + 3);
3461 startp = endp = temp;
3464 if (*endp == PATH_SEPARATOR || *endp == 0)
3466 strncpy (nstore, startp, endp - startp);
3468 strcpy (nstore, concat (".", dir_separator_str, NULL));
3469 else if (!IS_DIR_SEPARATOR (endp[-1]))
3471 nstore[endp - startp] = DIR_SEPARATOR;
3472 nstore[endp - startp + 1] = 0;
3475 nstore[endp - startp] = 0;
3476 add_prefix (&exec_prefixes, nstore, 0,
3477 PREFIX_PRIORITY_LAST, 0, 0);
3478 add_prefix (&include_prefixes, nstore, 0,
3479 PREFIX_PRIORITY_LAST, 0, 0);
3482 endp = startp = endp + 1;
3489 GET_ENVIRONMENT (temp, LIBRARY_PATH_ENV);
3490 if (temp && *cross_compile == '0')
3492 const char *startp, *endp;
3493 char *nstore = alloca (strlen (temp) + 3);
3495 startp = endp = temp;
3498 if (*endp == PATH_SEPARATOR || *endp == 0)
3500 strncpy (nstore, startp, endp - startp);
3502 strcpy (nstore, concat (".", dir_separator_str, NULL));
3503 else if (!IS_DIR_SEPARATOR (endp[-1]))
3505 nstore[endp - startp] = DIR_SEPARATOR;
3506 nstore[endp - startp + 1] = 0;
3509 nstore[endp - startp] = 0;
3510 add_prefix (&startfile_prefixes, nstore, NULL,
3511 PREFIX_PRIORITY_LAST, 0, 1);
3514 endp = startp = endp + 1;
3521 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3522 GET_ENVIRONMENT (temp, "LPATH");
3523 if (temp && *cross_compile == '0')
3525 const char *startp, *endp;
3526 char *nstore = alloca (strlen (temp) + 3);
3528 startp = endp = temp;
3531 if (*endp == PATH_SEPARATOR || *endp == 0)
3533 strncpy (nstore, startp, endp - startp);
3535 strcpy (nstore, concat (".", dir_separator_str, NULL));
3536 else if (!IS_DIR_SEPARATOR (endp[-1]))
3538 nstore[endp - startp] = DIR_SEPARATOR;
3539 nstore[endp - startp + 1] = 0;
3542 nstore[endp - startp] = 0;
3543 add_prefix (&startfile_prefixes, nstore, NULL,
3544 PREFIX_PRIORITY_LAST, 0, 1);
3547 endp = startp = endp + 1;
3554 /* Convert new-style -- options to old-style. */
3555 translate_options (&argc, (const char *const **) &argv);
3557 /* Do language-specific adjustment/addition of flags. */
3558 lang_specific_driver (&argc, (const char *const **) &argv, &added_libraries);
3560 /* Scan argv twice. Here, the first time, just count how many switches
3561 there will be in their vector, and how many input files in theirs.
3562 Here we also parse the switches that cc itself uses (e.g. -v). */
3564 for (i = 1; i < argc; i++)
3566 if (! strcmp (argv[i], "-dumpspecs"))
3568 struct spec_list *sl;
3570 for (sl = specs; sl; sl = sl->next)
3571 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3572 if (link_command_spec)
3573 printf ("*link_command:\n%s\n\n", link_command_spec);
3576 else if (! strcmp (argv[i], "-dumpversion"))
3578 printf ("%s\n", spec_version);
3581 else if (! strcmp (argv[i], "-dumpmachine"))
3583 printf ("%s\n", spec_machine);
3586 else if (strcmp (argv[i], "-fversion") == 0)
3588 /* translate_options () has turned --version into -fversion. */
3589 printf (_("%s (GCC) %s\n"), programname, version_string);
3590 printf ("Copyright %s 2007 Free Software Foundation, Inc.\n",
3592 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
3593 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
3597 else if (strcmp (argv[i], "-fhelp") == 0)
3599 /* translate_options () has turned --help into -fhelp. */
3600 print_help_list = 1;
3602 /* We will be passing a dummy file on to the sub-processes. */
3606 /* CPP driver cannot obtain switch from cc1_options. */
3608 add_preprocessor_option ("--help", 6);
3609 add_assembler_option ("--help", 6);
3610 add_linker_option ("--help", 6);
3612 else if (strncmp (argv[i], "-fhelp=", 7) == 0)
3614 /* translate_options () has turned --help into -fhelp. */
3615 print_subprocess_help = 2;
3617 /* We will be passing a dummy file on to the sub-processes. */
3621 else if (strcmp (argv[i], "-ftarget-help") == 0)
3623 /* translate_options() has turned --target-help into -ftarget-help. */
3624 print_subprocess_help = 1;
3626 /* We will be passing a dummy file on to the sub-processes. */
3630 /* CPP driver cannot obtain switch from cc1_options. */
3632 add_preprocessor_option ("--target-help", 13);
3633 add_assembler_option ("--target-help", 13);
3634 add_linker_option ("--target-help", 13);
3636 else if (! strcmp (argv[i], "-pass-exit-codes"))
3638 pass_exit_codes = 1;
3641 else if (! strcmp (argv[i], "-print-search-dirs"))
3642 print_search_dirs = 1;
3643 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3644 print_file_name = "libgcc.a";
3645 else if (! strncmp (argv[i], "-print-file-name=", 17))
3646 print_file_name = argv[i] + 17;
3647 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3648 print_prog_name = argv[i] + 17;
3649 else if (! strcmp (argv[i], "-print-multi-lib"))
3650 print_multi_lib = 1;
3651 else if (! strcmp (argv[i], "-print-multi-directory"))
3652 print_multi_directory = 1;
3653 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3654 print_multi_os_directory = 1;
3655 else if (! strcmp (argv[i], "-print-sysroot-headers-suffix"))
3656 print_sysroot_headers_suffix = 1;
3657 else if (! strncmp (argv[i], "-Wa,", 4))
3660 /* Pass the rest of this option to the assembler. */
3662 /* Split the argument at commas. */
3664 for (j = 4; argv[i][j]; j++)
3665 if (argv[i][j] == ',')
3667 add_assembler_option (argv[i] + prev, j - prev);
3671 /* Record the part after the last comma. */
3672 add_assembler_option (argv[i] + prev, j - prev);
3674 else if (! strncmp (argv[i], "-Wp,", 4))
3677 /* Pass the rest of this option to the preprocessor. */
3679 /* Split the argument at commas. */
3681 for (j = 4; argv[i][j]; j++)
3682 if (argv[i][j] == ',')
3684 add_preprocessor_option (argv[i] + prev, j - prev);
3688 /* Record the part after the last comma. */
3689 add_preprocessor_option (argv[i] + prev, j - prev);
3691 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3692 /* The +e options to the C++ front-end. */
3694 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3697 /* Split the argument at commas. */
3698 for (j = 3; argv[i][j]; j++)
3699 n_infiles += (argv[i][j] == ',');
3701 else if (strcmp (argv[i], "-Xlinker") == 0)
3704 fatal ("argument to '-Xlinker' is missing");
3709 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3712 fatal ("argument to '-Xpreprocessor' is missing");
3714 add_preprocessor_option (argv[i+1], strlen (argv[i+1]));
3716 else if (strcmp (argv[i], "-Xassembler") == 0)
3719 fatal ("argument to '-Xassembler' is missing");
3721 add_assembler_option (argv[i+1], strlen (argv[i+1]));
3723 else if (strcmp (argv[i], "-l") == 0)
3726 fatal ("argument to '-l' is missing");
3731 else if (strncmp (argv[i], "-l", 2) == 0)
3733 else if (strcmp (argv[i], "-save-temps") == 0)
3735 save_temps_flag = 1;
3738 else if (strcmp (argv[i], "-combine") == 0)
3743 else if (strcmp (argv[i], "-specs") == 0)
3745 struct user_specs *user = XNEW (struct user_specs);
3747 fatal ("argument to '-specs' is missing");
3749 user->next = (struct user_specs *) 0;
3750 user->filename = argv[i];
3751 if (user_specs_tail)
3752 user_specs_tail->next = user;
3754 user_specs_head = user;
3755 user_specs_tail = user;
3757 else if (strncmp (argv[i], "-specs=", 7) == 0)
3759 struct user_specs *user = XNEW (struct user_specs);
3760 if (strlen (argv[i]) == 7)
3761 fatal ("argument to '-specs=' is missing");
3763 user->next = (struct user_specs *) 0;
3764 user->filename = argv[i] + 7;
3765 if (user_specs_tail)
3766 user_specs_tail->next = user;
3768 user_specs_head = user;
3769 user_specs_tail = user;
3771 else if (strcmp (argv[i], "-time") == 0)
3773 else if (strcmp (argv[i], "-pipe") == 0)
3775 /* -pipe has to go into the switches array as well as
3780 else if (strcmp (argv[i], "-###") == 0)
3782 /* This is similar to -v except that there is no execution
3783 of the commands and the echoed arguments are quoted. It
3784 is intended for use in shell scripts to capture the
3785 driver-generated command line. */
3786 verbose_only_flag++;
3789 else if (argv[i][0] == '-' && argv[i][1] != 0)
3791 const char *p = &argv[i][1];
3797 if (NULL == strchr(argv[i] + 2, '-'))
3802 fatal ("'-%c' must come at the start of the command line", c);
3810 if (p[1] == 0 && i + 1 == argc)
3811 fatal ("argument to '-B' is missing");
3817 len = strlen (value);
3819 /* Catch the case where the user has forgotten to append a
3820 directory separator to the path. Note, they may be using
3821 -B to add an executable name prefix, eg "i386-elf-", in
3822 order to distinguish between multiple installations of
3823 GCC in the same directory. Hence we must check to see
3824 if appending a directory separator actually makes a
3825 valid directory name. */
3826 if (! IS_DIR_SEPARATOR (value [len - 1])
3827 && is_directory (value, false))
3829 char *tmp = XNEWVEC (char, len + 2);
3830 strcpy (tmp, value);
3831 tmp[len] = DIR_SEPARATOR;
3836 add_prefix (&exec_prefixes, value, NULL,
3837 PREFIX_PRIORITY_B_OPT, 0, 0);
3838 add_prefix (&startfile_prefixes, value, NULL,
3839 PREFIX_PRIORITY_B_OPT, 0, 0);
3840 add_prefix (&include_prefixes, value, NULL,
3841 PREFIX_PRIORITY_B_OPT, 0, 0);
3846 case 'v': /* Print our subcommands and print versions. */
3848 /* If they do anything other than exactly `-v', don't set
3849 verbose_flag; rather, continue on to give the error. */
3867 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3872 /* Forward scan, just in case -S or -c is specified
3879 if (argv[j][0] == '-')
3881 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
3887 else if ((skip = SWITCH_TAKES_ARG (argv[j][1])))
3888 j += skip - (argv[j][2] != 0);
3889 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1)))
3896 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3898 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0);
3900 argv[i] = convert_filename (argv[i], ! have_c, 0);
3907 #ifdef MODIFY_TARGET_NAME
3908 is_modify_target_name = 0;
3910 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3911 if (! strcmp (argv[i], modify_target[j].sw))
3913 char *new_name = xmalloc (strlen (modify_target[j].str)
3914 + strlen (spec_machine));
3917 int made_addition = 0;
3919 is_modify_target_name = 1;
3920 for (p = spec_machine, q = new_name; *p != 0; )
3922 if (modify_target[j].add_del == DELETE
3923 && (! strncmp (q, modify_target[j].str,
3924 strlen (modify_target[j].str))))
3925 p += strlen (modify_target[j].str);
3926 else if (modify_target[j].add_del == ADD
3927 && ! made_addition && *p == '-')
3929 for (r = modify_target[j].str; *r != 0; )
3937 spec_machine = new_name;
3940 if (is_modify_target_name)
3946 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
3947 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
3948 else if (WORD_SWITCH_TAKES_ARG (p))
3949 i += WORD_SWITCH_TAKES_ARG (p);
3959 if (save_temps_flag && use_pipes)
3961 /* -save-temps overrides -pipe, so that temp files are produced */
3962 if (save_temps_flag)
3963 error ("warning: -pipe ignored because -save-temps specified");
3967 /* Set up the search paths. We add directories that we expect to
3968 contain GNU Toolchain components before directories specified by
3969 the machine description so that we will find GNU components (like
3970 the GNU assembler) before those of the host system. */
3972 /* If we don't know where the toolchain has been installed, use the
3973 configured-in locations. */
3974 if (!gcc_exec_prefix)
3977 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
3978 PREFIX_PRIORITY_LAST, 1, 0);
3979 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
3980 PREFIX_PRIORITY_LAST, 2, 0);
3981 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3982 PREFIX_PRIORITY_LAST, 2, 0);
3984 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3985 PREFIX_PRIORITY_LAST, 1, 0);
3988 /* If not cross-compiling, search well-known system locations. */
3989 if (*cross_compile == '0')
3992 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS",
3993 PREFIX_PRIORITY_LAST, 2, 0);
3994 add_prefix (&exec_prefixes, standard_exec_prefix_2, "BINUTILS",
3995 PREFIX_PRIORITY_LAST, 2, 0);
3997 add_prefix (&startfile_prefixes, standard_exec_prefix_2, "BINUTILS",
3998 PREFIX_PRIORITY_LAST, 1, 0);
4001 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix));
4002 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
4003 dir_separator_str, NULL);
4005 /* Look for tools relative to the location from which the driver is
4006 running, or, if that is not available, the configured prefix. */
4008 = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
4009 spec_machine, dir_separator_str,
4010 spec_version, dir_separator_str, tooldir_prefix, NULL);
4012 add_prefix (&exec_prefixes,
4013 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
4014 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0);
4015 add_prefix (&startfile_prefixes,
4016 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
4017 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1);
4019 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
4020 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
4021 then consider it to relocate with the rest of the GCC installation
4022 if GCC_EXEC_PREFIX is set.
4023 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
4024 if (target_system_root && gcc_exec_prefix)
4026 char *tmp_prefix = make_relative_prefix (argv[0],
4027 standard_bindir_prefix,
4028 target_system_root);
4029 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
4031 target_system_root = tmp_prefix;
4032 target_system_root_changed = 1;
4037 /* More prefixes are enabled in main, after we read the specs file
4038 and determine whether this is cross-compilation or not. */
4040 /* Then create the space for the vectors and scan again. */
4042 switches = XNEWVEC (struct switchstr, n_switches + 1);
4043 infiles = XNEWVEC (struct infile, n_infiles + 1);
4046 last_language_n_infiles = -1;
4048 /* This, time, copy the text of each switch and store a pointer
4049 to the copy in the vector of switches.
4050 Store all the infiles in their vector. */
4052 for (i = 1; i < argc; i++)
4054 /* Just skip the switches that were handled by the preceding loop. */
4055 #ifdef MODIFY_TARGET_NAME
4056 is_modify_target_name = 0;
4058 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
4059 if (! strcmp (argv[i], modify_target[j].sw))
4060 is_modify_target_name = 1;
4062 if (is_modify_target_name)
4066 if (! strncmp (argv[i], "-Wa,", 4))
4068 else if (! strncmp (argv[i], "-Wp,", 4))
4070 else if (! strcmp (argv[i], "-pass-exit-codes"))
4072 else if (! strcmp (argv[i], "-print-search-dirs"))
4074 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
4076 else if (! strncmp (argv[i], "-print-file-name=", 17))
4078 else if (! strncmp (argv[i], "-print-prog-name=", 17))
4080 else if (! strcmp (argv[i], "-print-multi-lib"))
4082 else if (! strcmp (argv[i], "-print-multi-directory"))
4084 else if (! strcmp (argv[i], "-print-multi-os-directory"))
4086 else if (! strcmp (argv[i], "-print-sysroot-headers-suffix"))
4088 else if (! strncmp (argv[i], "--sysroot=", strlen ("--sysroot=")))
4090 target_system_root = argv[i] + strlen ("--sysroot=");
4091 target_system_root_changed = 1;
4093 else if (argv[i][0] == '+' && argv[i][1] == 'e')
4095 /* Compensate for the +e options to the C++ front-end;
4096 they're there simply for cfront call-compatibility. We do
4097 some magic in default_compilers to pass them down properly.
4098 Note we deliberately start at the `+' here, to avoid passing
4099 -e0 or -e1 down into the linker. */
4100 switches[n_switches].part1 = &argv[i][0];
4101 switches[n_switches].args = 0;
4102 switches[n_switches].live_cond = SWITCH_OK;
4103 switches[n_switches].validated = 0;
4106 else if (strncmp (argv[i], "-Wl,", 4) == 0)
4109 /* Split the argument at commas. */
4111 for (j = 4; argv[i][j]; j++)
4112 if (argv[i][j] == ',')
4114 infiles[n_infiles].language = "*";
4115 infiles[n_infiles++].name
4116 = save_string (argv[i] + prev, j - prev);
4119 /* Record the part after the last comma. */
4120 infiles[n_infiles].language = "*";
4121 infiles[n_infiles++].name = argv[i] + prev;
4123 else if (strcmp (argv[i], "-Xlinker") == 0)
4125 infiles[n_infiles].language = "*";
4126 infiles[n_infiles++].name = argv[++i];
4128 /* Xassembler and Xpreprocessor were already handled in the first argv
4129 scan, so all we need to do here is ignore them and their argument. */
4130 else if (strcmp (argv[i], "-Xassembler") == 0)
4132 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
4134 else if (strcmp (argv[i], "-l") == 0)
4135 { /* POSIX allows separation of -l and the lib arg;
4136 canonicalize by concatenating -l with its arg */
4137 infiles[n_infiles].language = "*";
4138 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL);
4140 else if (strncmp (argv[i], "-l", 2) == 0)
4142 infiles[n_infiles].language = "*";
4143 infiles[n_infiles++].name = argv[i];
4145 else if (strcmp (argv[i], "-specs") == 0)
4147 else if (strncmp (argv[i], "-specs=", 7) == 0)
4149 else if (strcmp (argv[i], "-time") == 0)
4151 else if (strcmp (argv[i], "-###") == 0)
4153 else if (argv[i][0] == '-' && argv[i][1] != 0)
4155 const char *p = &argv[i][1];
4160 if (p[1] == 0 && i + 1 == argc)
4161 fatal ("argument to '-x' is missing");
4163 spec_lang = argv[++i];
4166 if (! strcmp (spec_lang, "none"))
4167 /* Suppress the warning if -xnone comes after the last input
4168 file, because alternate command interfaces like g++ might
4169 find it useful to place -xnone after each input file. */
4172 last_language_n_infiles = n_infiles;
4175 switches[n_switches].part1 = p;
4176 /* Deal with option arguments in separate argv elements. */
4177 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
4178 || WORD_SWITCH_TAKES_ARG (p))
4181 int n_args = WORD_SWITCH_TAKES_ARG (p);
4185 /* Count only the option arguments in separate argv elements. */
4186 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
4188 if (i + n_args >= argc)
4189 fatal ("argument to '-%s' is missing", p);
4190 switches[n_switches].args
4191 = XNEWVEC (const char *, n_args + 1);
4193 switches[n_switches].args[j++] = argv[++i];
4194 /* Null-terminate the vector. */
4195 switches[n_switches].args[j] = 0;
4197 else if (strchr (switches_need_spaces, c))
4199 /* On some systems, ld cannot handle some options without
4200 a space. So split the option from its argument. */
4201 char *part1 = XNEWVEC (char, 2);
4205 switches[n_switches].part1 = part1;
4206 switches[n_switches].args = XNEWVEC (const char *, 2);
4207 switches[n_switches].args[0] = xstrdup (p+1);
4208 switches[n_switches].args[1] = 0;
4211 switches[n_switches].args = 0;
4213 switches[n_switches].live_cond = SWITCH_OK;
4214 switches[n_switches].validated = 0;
4215 switches[n_switches].ordering = 0;
4216 /* These are always valid, since gcc.c itself understands the
4217 first four and gfortranspec.c understands -static-libgfortran. */
4218 if (!strcmp (p, "save-temps")
4219 || !strcmp (p, "static-libgcc")
4220 || !strcmp (p, "shared-libgcc")
4221 || !strcmp (p, "pipe")
4222 || !strcmp (p, "static-libgfortran"))
4223 switches[n_switches].validated = 1;
4226 char ch = switches[n_switches].part1[0];
4228 switches[n_switches].validated = 1;
4234 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4235 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
4238 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
4240 perror_with_name (argv[i]);
4245 infiles[n_infiles].language = spec_lang;
4246 infiles[n_infiles++].name = argv[i];
4251 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4252 error ("warning: '-x %s' after last input file has no effect", spec_lang);
4254 /* Ensure we only invoke each subprocess once. */
4255 if (print_subprocess_help || print_help_list)
4259 /* Create a dummy input file, so that we can pass
4260 the help option on to the various sub-processes. */
4261 infiles[0].language = "c";
4262 infiles[0].name = "help-dummy";
4265 switches[n_switches].part1 = 0;
4266 infiles[n_infiles].name = 0;
4269 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4270 and place that in the environment. */
4273 set_collect_gcc_options (void)
4278 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4280 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4281 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4284 for (i = 0; (int) i < n_switches; i++)
4286 const char *const *args;
4289 obstack_grow (&collect_obstack, " ", 1);
4293 /* Ignore elided switches. */
4294 if (switches[i].live_cond == SWITCH_IGNORE)
4297 obstack_grow (&collect_obstack, "'-", 2);
4298 q = switches[i].part1;
4299 while ((p = strchr (q, '\'')))
4301 obstack_grow (&collect_obstack, q, p - q);
4302 obstack_grow (&collect_obstack, "'\\''", 4);
4305 obstack_grow (&collect_obstack, q, strlen (q));
4306 obstack_grow (&collect_obstack, "'", 1);
4308 for (args = switches[i].args; args && *args; args++)
4310 obstack_grow (&collect_obstack, " '", 2);
4312 while ((p = strchr (q, '\'')))
4314 obstack_grow (&collect_obstack, q, p - q);
4315 obstack_grow (&collect_obstack, "'\\''", 4);
4318 obstack_grow (&collect_obstack, q, strlen (q));
4319 obstack_grow (&collect_obstack, "'", 1);
4322 obstack_grow (&collect_obstack, "\0", 1);
4323 putenv (XOBFINISH (&collect_obstack, char *));
4326 /* Process a spec string, accumulating and running commands. */
4328 /* These variables describe the input file name.
4329 input_file_number is the index on outfiles of this file,
4330 so that the output file name can be stored for later use by %o.
4331 input_basename is the start of the part of the input file
4332 sans all directory names, and basename_length is the number
4333 of characters starting there excluding the suffix .c or whatever. */
4335 static const char *input_filename;
4336 static int input_file_number;
4337 size_t input_filename_length;
4338 static int basename_length;
4339 static int suffixed_basename_length;
4340 static const char *input_basename;
4341 static const char *input_suffix;
4342 #ifndef HOST_LACKS_INODE_NUMBERS
4343 static struct stat input_stat;
4345 static int input_stat_set;
4347 /* The compiler used to process the current input file. */
4348 static struct compiler *input_file_compiler;
4350 /* These are variables used within do_spec and do_spec_1. */
4352 /* Nonzero if an arg has been started and not yet terminated
4353 (with space, tab or newline). */
4354 static int arg_going;
4356 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4357 is a temporary file name. */
4358 static int delete_this_arg;
4360 /* Nonzero means %w has been seen; the next arg to be terminated
4361 is the output file name of this compilation. */
4362 static int this_is_output_file;
4364 /* Nonzero means %s has been seen; the next arg to be terminated
4365 is the name of a library file and we should try the standard
4366 search dirs for it. */
4367 static int this_is_library_file;
4369 /* Nonzero means that the input of this command is coming from a pipe. */
4370 static int input_from_pipe;
4372 /* Nonnull means substitute this for any suffix when outputting a switches
4374 static const char *suffix_subst;
4376 /* If there is an argument being accumulated, terminate it and store it. */
4379 end_going_arg (void)
4385 obstack_1grow (&obstack, 0);
4386 string = XOBFINISH (&obstack, const char *);
4387 if (this_is_library_file)
4388 string = find_file (string);
4389 store_arg (string, delete_this_arg, this_is_output_file);
4390 if (this_is_output_file)
4391 outfiles[input_file_number] = string;
4396 /* Process the spec SPEC and run the commands specified therein.
4397 Returns 0 if the spec is successfully processed; -1 if failed. */
4400 do_spec (const char *spec)
4404 value = do_spec_2 (spec);
4406 /* Force out any unfinished command.
4407 If -pipe, this forces out the last command if it ended in `|'. */
4410 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4413 set_collect_gcc_options ();
4415 if (argbuf_index > 0)
4423 do_spec_2 (const char *spec)
4429 delete_this_arg = 0;
4430 this_is_output_file = 0;
4431 this_is_library_file = 0;
4432 input_from_pipe = 0;
4433 suffix_subst = NULL;
4435 result = do_spec_1 (spec, 0, NULL);
4443 /* Process the given spec string and add any new options to the end
4444 of the switches/n_switches array. */
4447 do_option_spec (const char *name, const char *spec)
4449 unsigned int i, value_count, value_len;
4450 const char *p, *q, *value;
4451 char *tmp_spec, *tmp_spec_p;
4453 if (configure_default_options[0].name == NULL)
4456 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4457 if (strcmp (configure_default_options[i].name, name) == 0)
4459 if (i == ARRAY_SIZE (configure_default_options))
4462 value = configure_default_options[i].value;
4463 value_len = strlen (value);
4465 /* Compute the size of the final spec. */
4468 while ((p = strstr (p, "%(VALUE)")) != NULL)
4474 /* Replace each %(VALUE) by the specified value. */
4475 tmp_spec = alloca (strlen (spec) + 1
4476 + value_count * (value_len - strlen ("%(VALUE)")));
4477 tmp_spec_p = tmp_spec;
4479 while ((p = strstr (q, "%(VALUE)")) != NULL)
4481 memcpy (tmp_spec_p, q, p - q);
4482 tmp_spec_p = tmp_spec_p + (p - q);
4483 memcpy (tmp_spec_p, value, value_len);
4484 tmp_spec_p += value_len;
4485 q = p + strlen ("%(VALUE)");
4487 strcpy (tmp_spec_p, q);
4489 do_self_spec (tmp_spec);
4492 /* Process the given spec string and add any new options to the end
4493 of the switches/n_switches array. */
4496 do_self_spec (const char *spec)
4499 do_spec_1 (" ", 0, NULL);
4501 if (argbuf_index > 0)
4506 n_switches += argbuf_index;
4507 switches = xrealloc (switches,
4508 sizeof (struct switchstr) * (n_switches + 1));
4510 switches[n_switches] = switches[first];
4511 for (i = 0; i < argbuf_index; i++)
4513 struct switchstr *sw;
4515 /* Each switch should start with '-'. */
4516 if (argbuf[i][0] != '-')
4517 fatal ("switch '%s' does not start with '-'", argbuf[i]);
4519 sw = &switches[i + first];
4520 sw->part1 = &argbuf[i][1];
4522 sw->live_cond = SWITCH_OK;
4529 /* Callback for processing %D and %I specs. */
4531 struct spec_path_info {
4536 bool separate_options;
4540 spec_path (char *path, void *data)
4542 struct spec_path_info *info = data;
4546 if (info->omit_relative && !IS_ABSOLUTE_PATH (path))
4549 if (info->append_len != 0)
4551 len = strlen (path);
4552 memcpy (path + len, info->append, info->append_len + 1);
4555 if (!is_directory (path, true))
4558 do_spec_1 (info->option, 1, NULL);
4559 if (info->separate_options)
4560 do_spec_1 (" ", 0, NULL);
4562 if (info->append_len == 0)
4564 len = strlen (path);
4565 save = path[len - 1];
4566 if (IS_DIR_SEPARATOR (path[len - 1]))
4567 path[len - 1] = '\0';
4570 do_spec_1 (path, 1, NULL);
4571 do_spec_1 (" ", 0, NULL);
4573 /* Must not damage the original path. */
4574 if (info->append_len == 0)
4575 path[len - 1] = save;
4580 /* Process the sub-spec SPEC as a portion of a larger spec.
4581 This is like processing a whole spec except that we do
4582 not initialize at the beginning and we do not supply a
4583 newline by default at the end.
4584 INSWITCH nonzero means don't process %-sequences in SPEC;
4585 in this case, % is treated as an ordinary character.
4586 This is used while substituting switches.
4587 INSWITCH nonzero also causes SPC not to terminate an argument.
4589 Value is zero unless a line was finished
4590 and the command on that line reported an error. */
4593 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4595 const char *p = spec;
4601 /* If substituting a switch, treat all chars like letters.
4602 Otherwise, NL, SPC, TAB and % are special. */
4603 switch (inswitch ? 'a' : c)
4608 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4610 /* A `|' before the newline means use a pipe here,
4611 but only if -pipe was specified.
4612 Otherwise, execute now and don't pass the `|' as an arg. */
4615 input_from_pipe = 1;
4622 set_collect_gcc_options ();
4624 if (argbuf_index > 0)
4630 /* Reinitialize for a new command, and for a new argument. */
4633 delete_this_arg = 0;
4634 this_is_output_file = 0;
4635 this_is_library_file = 0;
4636 input_from_pipe = 0;
4643 obstack_1grow (&obstack, c);
4651 /* Reinitialize for a new argument. */
4652 delete_this_arg = 0;
4653 this_is_output_file = 0;
4654 this_is_library_file = 0;
4661 fatal ("spec '%s' invalid", spec);
4664 obstack_grow (&obstack, input_basename, basename_length);
4669 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4674 delete_this_arg = 2;
4677 /* Dump out the directories specified with LIBRARY_PATH,
4678 followed by the absolute directories
4679 that we search for startfiles. */
4682 struct spec_path_info info;
4685 info.append_len = 0;
4686 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4687 /* Used on systems which record the specified -L dirs
4688 and use them to search for dynamic linking.
4689 Relative directories always come from -B,
4690 and it is better not to use them for searching
4691 at run time. In particular, stage1 loses. */
4692 info.omit_relative = true;
4694 info.omit_relative = false;
4696 info.separate_options = false;
4698 for_each_path (&startfile_prefixes, true, 0, spec_path, &info);
4703 /* %efoo means report an error with `foo' as error message
4704 and don't execute any more commands for this file. */
4708 while (*p != 0 && *p != '\n')
4710 buf = alloca (p - q + 1);
4711 strncpy (buf, q, p - q);
4718 /* %nfoo means report a notice with `foo' on stderr. */
4722 while (*p != 0 && *p != '\n')
4724 buf = alloca (p - q + 1);
4725 strncpy (buf, q, p - q);
4727 notice ("%s\n", buf);
4737 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4738 defined, and it is not a directory, and it is
4739 writable, use it. Otherwise, treat this like any
4740 other temporary file. */
4742 if ((!save_temps_flag)
4743 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4744 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4746 obstack_grow (&obstack, HOST_BIT_BUCKET,
4747 strlen (HOST_BIT_BUCKET));
4748 delete_this_arg = 0;
4753 goto create_temp_file;
4757 obstack_1grow (&obstack, '-');
4758 delete_this_arg = 0;
4761 /* consume suffix */
4762 while (*p == '.' || ISALNUM ((unsigned char) *p))
4764 if (p[0] == '%' && p[1] == 'O')
4769 goto create_temp_file;
4773 /* consume suffix */
4774 while (*p == '.' || ISALNUM ((unsigned char) *p))
4776 if (p[0] == '%' && p[1] == 'O')
4781 goto create_temp_file;
4787 struct temp_name *t;
4789 const char *suffix = p;
4790 char *saved_suffix = NULL;
4792 while (*p == '.' || ISALNUM ((unsigned char) *p))
4794 suffix_length = p - suffix;
4795 if (p[0] == '%' && p[1] == 'O')
4798 /* We don't support extra suffix characters after %O. */
4799 if (*p == '.' || ISALNUM ((unsigned char) *p))
4800 fatal ("spec '%s' has invalid '%%0%c'", spec, *p);
4801 if (suffix_length == 0)
4802 suffix = TARGET_OBJECT_SUFFIX;
4806 = XNEWVEC (char, suffix_length
4807 + strlen (TARGET_OBJECT_SUFFIX));
4808 strncpy (saved_suffix, suffix, suffix_length);
4809 strcpy (saved_suffix + suffix_length,
4810 TARGET_OBJECT_SUFFIX);
4812 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4815 /* If the input_filename has the same suffix specified
4816 for the %g, %u, or %U, and -save-temps is specified,
4817 we could end up using that file as an intermediate
4818 thus clobbering the user's source file (.e.g.,
4819 gcc -save-temps foo.s would clobber foo.s with the
4820 output of cpp0). So check for this condition and
4821 generate a temp file as the intermediate. */
4823 if (save_temps_flag)
4827 temp_filename_length = basename_length + suffix_length;
4828 tmp = alloca (temp_filename_length + 1);
4829 strncpy (tmp, input_basename, basename_length);
4830 strncpy (tmp + basename_length, suffix, suffix_length);
4831 tmp[temp_filename_length] = '\0';
4832 temp_filename = tmp;
4833 if (strcmp (temp_filename, input_filename) != 0)
4835 #ifndef HOST_LACKS_INODE_NUMBERS
4836 struct stat st_temp;
4838 /* Note, set_input() resets input_stat_set to 0. */
4839 if (input_stat_set == 0)
4841 input_stat_set = stat (input_filename, &input_stat);
4842 if (input_stat_set >= 0)
4846 /* If we have the stat for the input_filename
4847 and we can do the stat for the temp_filename
4848 then the they could still refer to the same
4849 file if st_dev/st_ino's are the same. */
4850 if (input_stat_set != 1
4851 || stat (temp_filename, &st_temp) < 0
4852 || input_stat.st_dev != st_temp.st_dev
4853 || input_stat.st_ino != st_temp.st_ino)
4855 /* Just compare canonical pathnames. */
4856 char* input_realname = lrealpath (input_filename);
4857 char* temp_realname = lrealpath (temp_filename);
4858 bool files_differ = strcmp (input_realname, temp_realname);
4859 free (input_realname);
4860 free (temp_realname);
4864 temp_filename = save_string (temp_filename,
4865 temp_filename_length + 1);
4866 obstack_grow (&obstack, temp_filename,
4867 temp_filename_length);
4869 delete_this_arg = 0;
4875 /* See if we already have an association of %g/%u/%U and
4877 for (t = temp_names; t; t = t->next)
4878 if (t->length == suffix_length
4879 && strncmp (t->suffix, suffix, suffix_length) == 0
4880 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
4883 /* Make a new association if needed. %u and %j
4885 if (t == 0 || c == 'u' || c == 'j')
4889 t = xmalloc (sizeof (struct temp_name));
4890 t->next = temp_names;
4893 t->length = suffix_length;
4896 t->suffix = saved_suffix;
4897 saved_suffix = NULL;
4900 t->suffix = save_string (suffix, suffix_length);
4901 t->unique = (c == 'u' || c == 'U' || c == 'j');
4902 temp_filename = make_temp_file (t->suffix);
4903 temp_filename_length = strlen (temp_filename);
4904 t->filename = temp_filename;
4905 t->filename_length = temp_filename_length;
4909 free (saved_suffix);
4911 obstack_grow (&obstack, t->filename, t->filename_length);
4912 delete_this_arg = 1;
4920 for (i = 0; (int) i < n_infiles; i++)
4921 if ((!infiles[i].language) || (infiles[i].language[0] != '*'))
4922 if (infiles[i].incompiler == input_file_compiler)
4924 store_arg (infiles[i].name, 0, 0);
4925 infiles[i].compiled = true;
4930 obstack_grow (&obstack, input_filename, input_filename_length);
4937 struct spec_path_info info;
4941 do_spec_1 ("-imultilib", 1, NULL);
4942 /* Make this a separate argument. */
4943 do_spec_1 (" ", 0, NULL);
4944 do_spec_1 (multilib_dir, 1, NULL);
4945 do_spec_1 (" ", 0, NULL);
4948 if (gcc_exec_prefix)
4950 do_spec_1 ("-iprefix", 1, NULL);
4951 /* Make this a separate argument. */
4952 do_spec_1 (" ", 0, NULL);
4953 do_spec_1 (gcc_exec_prefix, 1, NULL);
4954 do_spec_1 (" ", 0, NULL);
4957 if (target_system_root_changed ||
4958 (target_system_root && target_sysroot_hdrs_suffix))
4960 do_spec_1 ("-isysroot", 1, NULL);
4961 /* Make this a separate argument. */
4962 do_spec_1 (" ", 0, NULL);
4963 do_spec_1 (target_system_root, 1, NULL);
4964 if (target_sysroot_hdrs_suffix)
4965 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
4966 do_spec_1 (" ", 0, NULL);
4969 info.option = "-isystem";
4970 info.append = "include";
4971 info.append_len = strlen (info.append);
4972 info.omit_relative = false;
4973 info.separate_options = true;
4975 for_each_path (&include_prefixes, false, info.append_len,
4978 info.append = "include-fixed";
4979 if (*sysroot_hdrs_suffix_spec)
4980 info.append = concat (info.append, dir_separator_str,
4981 multilib_dir, NULL);
4982 info.append_len = strlen (info.append);
4983 for_each_path (&include_prefixes, false, info.append_len,
4990 int max = n_infiles;
4991 max += lang_specific_extra_outfiles;
4993 if (HAVE_GNU_LD && at_file_supplied)
4995 /* We are going to expand `%o' to `@FILE', where FILE
4996 is a newly-created temporary filename. The filenames
4997 that would usually be expanded in place of %o will be
4998 written to the temporary file. */
5000 char *temp_file = make_temp_file ("");
5003 int n_files, j, status;
5006 at_argument = concat ("@", temp_file, NULL);
5007 store_arg (at_argument, 0, 0);
5009 /* Convert OUTFILES into a form suitable for writeargv. */
5011 /* Determine how many are non-NULL. */
5012 for (n_files = 0, i = 0; i < max; i++)
5013 n_files += outfiles[i] != NULL;
5015 argv = alloca (sizeof (char *) * (n_files + 1));
5017 /* Copy the strings over. */
5018 for (i = 0, j = 0; i < max; i++)
5021 argv[j] = (char *) outfiles[i];
5026 f = fopen (temp_file, "w");
5029 fatal ("could not open temporary response file %s",
5032 status = writeargv (argv, f);
5035 fatal ("could not write to temporary response file %s",
5038 status = fclose (f);
5041 fatal ("could not close temporary response file %s",
5044 record_temp_file (temp_file, !save_temps_flag, !save_temps_flag);
5047 for (i = 0; i < max; i++)
5049 store_arg (outfiles[i], 0, 0);
5054 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
5059 this_is_library_file = 1;
5063 outfiles[input_file_number] = NULL;
5067 this_is_output_file = 1;
5072 int cur_index = argbuf_index;
5073 /* Handle the {...} following the %W. */
5075 fatal ("spec '%s' has invalid '%%W%c", spec, *p);
5076 p = handle_braces (p + 1);
5080 /* If any args were output, mark the last one for deletion
5082 if (argbuf_index != cur_index)
5083 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
5087 /* %x{OPTION} records OPTION for %X to output. */
5093 /* Skip past the option value and make a copy. */
5095 fatal ("spec '%s' has invalid '%%x%c'", spec, *p);
5098 string = save_string (p1 + 1, p - p1 - 2);
5100 /* See if we already recorded this option. */
5101 for (i = 0; i < n_linker_options; i++)
5102 if (! strcmp (string, linker_options[i]))
5108 /* This option is new; add it. */
5109 add_linker_option (string, strlen (string));
5113 /* Dump out the options accumulated previously using %x. */
5115 for (i = 0; i < n_linker_options; i++)
5117 do_spec_1 (linker_options[i], 1, NULL);
5118 /* Make each accumulated option a separate argument. */
5119 do_spec_1 (" ", 0, NULL);
5123 /* Dump out the options accumulated previously using -Wa,. */
5125 for (i = 0; i < n_assembler_options; i++)
5127 do_spec_1 (assembler_options[i], 1, NULL);
5128 /* Make each accumulated option a separate argument. */
5129 do_spec_1 (" ", 0, NULL);
5133 /* Dump out the options accumulated previously using -Wp,. */
5135 for (i = 0; i < n_preprocessor_options; i++)
5137 do_spec_1 (preprocessor_options[i], 1, NULL);
5138 /* Make each accumulated option a separate argument. */
5139 do_spec_1 (" ", 0, NULL);
5143 /* Here are digits and numbers that just process
5144 a certain constant string as a spec. */
5147 value = do_spec_1 (cc1_spec, 0, NULL);
5153 value = do_spec_1 (cc1plus_spec, 0, NULL);
5159 value = do_spec_1 (asm_spec, 0, NULL);
5165 value = do_spec_1 (asm_final_spec, 0, NULL);
5172 const char *const spec
5173 = (input_file_compiler->cpp_spec
5174 ? input_file_compiler->cpp_spec
5176 value = do_spec_1 (spec, 0, NULL);
5183 value = do_spec_1 (endfile_spec, 0, NULL);
5189 value = do_spec_1 (link_spec, 0, NULL);
5195 value = do_spec_1 (lib_spec, 0, NULL);
5201 value = do_spec_1 (libgcc_spec, 0, NULL);
5207 /* We assume there is a directory
5208 separator at the end of this string. */
5209 if (target_system_root)
5211 obstack_grow (&obstack, target_system_root,
5212 strlen (target_system_root));
5213 if (target_sysroot_suffix)
5214 obstack_grow (&obstack, target_sysroot_suffix,
5215 strlen (target_sysroot_suffix));
5220 value = do_spec_1 (startfile_spec, 0, NULL);
5225 /* Here we define characters other than letters and digits. */
5228 p = handle_braces (p);
5234 p = handle_spec_function (p);
5240 obstack_1grow (&obstack, '%');
5247 while (p[len] && p[len] != ' ' && p[len] != '%')
5249 suffix_subst = save_string (p - 1, len + 1);
5254 /* Henceforth ignore the option(s) matching the pattern
5259 int have_wildcard = 0;
5262 while (p[len] && p[len] != ' ' && p[len] != '\t')
5265 if (p[len-1] == '*')
5268 for (i = 0; i < n_switches; i++)
5269 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5270 && (have_wildcard || switches[i].part1[len] == '\0'))
5272 switches[i].live_cond = SWITCH_IGNORE;
5273 switches[i].validated = 1;
5281 if (soft_matched_part)
5283 do_spec_1 (soft_matched_part, 1, NULL);
5284 do_spec_1 (" ", 0, NULL);
5287 /* Catch the case where a spec string contains something like
5288 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5289 hand side of the :. */
5290 error ("spec failure: '%%*' has not been initialized by pattern match");
5293 /* Process a string found as the value of a spec given by name.
5294 This feature allows individual machine descriptions
5295 to add and use their own specs.
5296 %[...] modifies -D options the way %P does;
5297 %(...) uses the spec unmodified. */
5299 error ("warning: use of obsolete %%[ operator in specs");
5302 const char *name = p;
5303 struct spec_list *sl;
5306 /* The string after the S/P is the name of a spec that is to be
5308 while (*p && *p != ')' && *p != ']')
5311 /* See if it's in the list. */
5312 for (len = p - name, sl = specs; sl; sl = sl->next)
5313 if (sl->name_len == len && !strncmp (sl->name, name, len))
5315 name = *(sl->ptr_spec);
5317 notice ("Processing spec %c%s%c, which is '%s'\n",
5318 c, sl->name, (c == '(') ? ')' : ']', name);
5327 value = do_spec_1 (name, 0, NULL);
5333 char *x = alloca (strlen (name) * 2 + 1);
5335 const char *y = name;
5338 /* Copy all of NAME into BUF, but put __ after
5339 every -D and at the end of each arg. */
5342 if (! strncmp (y, "-D", 2))
5353 && (*y == ' ' || *y == '\t' || *y == '='
5354 || *y == '}' || *y == 0))
5367 value = do_spec_1 (buf, 0, NULL);
5373 /* Discard the closing paren or bracket. */
5380 error ("spec failure: unrecognized spec option '%c'", c);
5386 /* Backslash: treat next character as ordinary. */
5391 /* Ordinary character: put it into the current argument. */
5392 obstack_1grow (&obstack, c);
5396 /* End of string. If we are processing a spec function, we need to
5397 end any pending argument. */
5398 if (processing_spec_function)
5404 /* Look up a spec function. */
5406 static const struct spec_function *
5407 lookup_spec_function (const char *name)
5409 const struct spec_function *sf;
5411 for (sf = static_spec_functions; sf->name != NULL; sf++)
5412 if (strcmp (sf->name, name) == 0)
5418 /* Evaluate a spec function. */
5421 eval_spec_function (const char *func, const char *args)
5423 const struct spec_function *sf;
5424 const char *funcval;
5426 /* Saved spec processing context. */
5427 int save_argbuf_index;
5428 int save_argbuf_length;
5429 const char **save_argbuf;
5432 int save_delete_this_arg;
5433 int save_this_is_output_file;
5434 int save_this_is_library_file;
5435 int save_input_from_pipe;
5436 const char *save_suffix_subst;
5439 sf = lookup_spec_function (func);
5441 fatal ("unknown spec function '%s'", func);
5443 /* Push the spec processing context. */
5444 save_argbuf_index = argbuf_index;
5445 save_argbuf_length = argbuf_length;
5446 save_argbuf = argbuf;
5448 save_arg_going = arg_going;
5449 save_delete_this_arg = delete_this_arg;
5450 save_this_is_output_file = this_is_output_file;
5451 save_this_is_library_file = this_is_library_file;
5452 save_input_from_pipe = input_from_pipe;
5453 save_suffix_subst = suffix_subst;
5455 /* Create a new spec processing context, and build the function
5459 if (do_spec_2 (args) < 0)
5460 fatal ("error in args to spec function '%s'", func);
5462 /* argbuf_index is an index for the next argument to be inserted, and
5463 so contains the count of the args already inserted. */
5465 funcval = (*sf->func) (argbuf_index, argbuf);
5467 /* Pop the spec processing context. */
5468 argbuf_index = save_argbuf_index;
5469 argbuf_length = save_argbuf_length;
5471 argbuf = save_argbuf;
5473 arg_going = save_arg_going;
5474 delete_this_arg = save_delete_this_arg;
5475 this_is_output_file = save_this_is_output_file;
5476 this_is_library_file = save_this_is_library_file;
5477 input_from_pipe = save_input_from_pipe;
5478 suffix_subst = save_suffix_subst;
5483 /* Handle a spec function call of the form:
5487 ARGS is processed as a spec in a separate context and split into an
5488 argument vector in the normal fashion. The function returns a string
5489 containing a spec which we then process in the caller's context, or
5490 NULL if no processing is required. */
5493 handle_spec_function (const char *p)
5496 const char *endp, *funcval;
5499 processing_spec_function++;
5501 /* Get the function name. */
5502 for (endp = p; *endp != '\0'; endp++)
5504 if (*endp == '(') /* ) */
5506 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5507 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5508 fatal ("malformed spec function name");
5510 if (*endp != '(') /* ) */
5511 fatal ("no arguments for spec function");
5512 func = save_string (p, endp - p);
5515 /* Get the arguments. */
5516 for (count = 0; *endp != '\0'; endp++)
5525 else if (*endp == '(') /* ) */
5530 fatal ("malformed spec function arguments");
5531 args = save_string (p, endp - p);
5534 /* p now points to just past the end of the spec function expression. */
5536 funcval = eval_spec_function (func, args);
5537 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5543 processing_spec_function--;
5548 /* Inline subroutine of handle_braces. Returns true if the current
5549 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5551 input_suffix_matches (const char *atom, const char *end_atom)
5553 return (input_suffix
5554 && !strncmp (input_suffix, atom, end_atom - atom)
5555 && input_suffix[end_atom - atom] == '\0');
5558 /* Subroutine of handle_braces. Returns true if the current
5559 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5561 input_spec_matches (const char *atom, const char *end_atom)
5563 return (input_file_compiler
5564 && input_file_compiler->suffix
5565 && input_file_compiler->suffix[0] != '\0'
5566 && !strncmp (input_file_compiler->suffix + 1, atom,
5568 && input_file_compiler->suffix[end_atom - atom + 1] == '\0');
5571 /* Subroutine of handle_braces. Returns true if a switch
5572 matching the atom bracketed by ATOM and END_ATOM appeared on the
5575 switch_matches (const char *atom, const char *end_atom, int starred)
5578 int len = end_atom - atom;
5579 int plen = starred ? len : -1;
5581 for (i = 0; i < n_switches; i++)
5582 if (!strncmp (switches[i].part1, atom, len)
5583 && (starred || switches[i].part1[len] == '\0')
5584 && check_live_switch (i, plen))
5590 /* Inline subroutine of handle_braces. Mark all of the switches which
5591 match ATOM (extends to END_ATOM; STARRED indicates whether there
5592 was a star after the atom) for later processing. */
5594 mark_matching_switches (const char *atom, const char *end_atom, int starred)
5597 int len = end_atom - atom;
5598 int plen = starred ? len : -1;
5600 for (i = 0; i < n_switches; i++)
5601 if (!strncmp (switches[i].part1, atom, len)
5602 && (starred || switches[i].part1[len] == '\0')
5603 && check_live_switch (i, plen))
5604 switches[i].ordering = 1;
5607 /* Inline subroutine of handle_braces. Process all the currently
5608 marked switches through give_switch, and clear the marks. */
5610 process_marked_switches (void)
5614 for (i = 0; i < n_switches; i++)
5615 if (switches[i].ordering == 1)
5617 switches[i].ordering = 0;
5622 /* Handle a %{ ... } construct. P points just inside the leading {.
5623 Returns a pointer one past the end of the brace block, or 0
5624 if we call do_spec_1 and that returns -1. */
5627 handle_braces (const char *p)
5629 const char *atom, *end_atom;
5630 const char *d_atom = NULL, *d_end_atom = NULL;
5631 const char *orig = p;
5639 bool a_must_be_last = false;
5640 bool ordered_set = false;
5641 bool disjunct_set = false;
5642 bool disj_matched = false;
5643 bool disj_starred = true;
5644 bool n_way_choice = false;
5645 bool n_way_matched = false;
5647 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5654 /* Scan one "atom" (S in the description above of %{}, possibly
5655 with '!', '.', '@', ',', or '*' modifiers). */
5657 a_is_suffix = false;
5658 a_is_starred = false;
5659 a_is_negated = false;
5660 a_is_spectype = false;
5664 p++, a_is_negated = true;
5668 p++, a_is_suffix = true;
5670 p++, a_is_spectype = true;
5673 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5674 || *p == ',' || *p == '.' || *p == '@')
5679 p++, a_is_starred = 1;
5685 /* Substitute the switch(es) indicated by the current atom. */
5687 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5688 || a_is_spectype || atom == end_atom)
5691 mark_matching_switches (atom, end_atom, a_is_starred);
5694 process_marked_switches ();
5698 /* Substitute some text if the current atom appears as a switch
5700 disjunct_set = true;
5704 if (atom == end_atom)
5706 if (!n_way_choice || disj_matched || *p == '|'
5707 || a_is_negated || a_is_suffix || a_is_spectype
5711 /* An empty term may appear as the last choice of an
5712 N-way choice set; it means "otherwise". */
5713 a_must_be_last = true;
5714 disj_matched = !n_way_matched;
5715 disj_starred = false;
5719 if ((a_is_suffix || a_is_spectype) && a_is_starred)
5723 disj_starred = false;
5725 /* Don't bother testing this atom if we already have a
5727 if (!disj_matched && !n_way_matched)
5730 a_matched = input_suffix_matches (atom, end_atom);
5731 else if (a_is_spectype)
5732 a_matched = input_spec_matches (atom, end_atom);
5734 a_matched = switch_matches (atom, end_atom, a_is_starred);
5736 if (a_matched != a_is_negated)
5738 disj_matched = true;
5740 d_end_atom = end_atom;
5747 /* Found the body, that is, the text to substitute if the
5748 current disjunction matches. */
5749 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5750 disj_matched && !n_way_matched);
5754 /* If we have an N-way choice, reset state for the next
5758 n_way_choice = true;
5759 n_way_matched |= disj_matched;
5760 disj_matched = false;
5761 disj_starred = true;
5762 d_atom = d_end_atom = NULL;
5771 while (*p++ != '}');
5776 fatal ("braced spec '%s' is invalid at '%c'", orig, *p);
5781 /* Subroutine of handle_braces. Scan and process a brace substitution body
5782 (X in the description of %{} syntax). P points one past the colon;
5783 ATOM and END_ATOM bracket the first atom which was found to be true
5784 (present) in the current disjunction; STARRED indicates whether all
5785 the atoms in the current disjunction were starred (for syntax validation);
5786 MATCHED indicates whether the disjunction matched or not, and therefore
5787 whether or not the body is to be processed through do_spec_1 or just
5788 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5792 process_brace_body (const char *p, const char *atom, const char *end_atom,
5793 int starred, int matched)
5795 const char *body, *end_body;
5796 unsigned int nesting_level;
5797 bool have_subst = false;
5799 /* Locate the closing } or ;, honoring nested braces.
5800 Trim trailing whitespace. */
5809 if (!--nesting_level)
5812 else if (*p == ';' && nesting_level == 1)
5814 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
5816 else if (*p == '\0')
5822 while (end_body[-1] == ' ' || end_body[-1] == '\t')
5825 if (have_subst && !starred)
5830 /* Copy the substitution body to permanent storage and execute it.
5831 If have_subst is false, this is a simple matter of running the
5832 body through do_spec_1... */
5833 char *string = save_string (body, end_body - body);
5836 if (do_spec_1 (string, 0, NULL) < 0)
5841 /* ... but if have_subst is true, we have to process the
5842 body once for each matching switch, with %* set to the
5843 variant part of the switch. */
5844 unsigned int hard_match_len = end_atom - atom;
5847 for (i = 0; i < n_switches; i++)
5848 if (!strncmp (switches[i].part1, atom, hard_match_len)
5849 && check_live_switch (i, hard_match_len))
5851 if (do_spec_1 (string, 0,
5852 &switches[i].part1[hard_match_len]) < 0)
5854 /* Pass any arguments this switch has. */
5856 suffix_subst = NULL;
5864 fatal ("braced spec body '%s' is invalid", body);
5867 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5868 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5869 spec, or -1 if either exact match or %* is used.
5871 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5872 whose value does not begin with "no-" is obsoleted by the same value
5873 with the "no-", similarly for a switch with the "no-" prefix. */
5876 check_live_switch (int switchnum, int prefix_length)
5878 const char *name = switches[switchnum].part1;
5881 /* In the common case of {<at-most-one-letter>*}, a negating
5882 switch would always match, so ignore that case. We will just
5883 send the conflicting switches to the compiler phase. */
5884 if (prefix_length >= 0 && prefix_length <= 1)
5887 /* If we already processed this switch and determined if it was
5888 live or not, return our past determination. */
5889 if (switches[switchnum].live_cond != 0)
5890 return switches[switchnum].live_cond > 0;
5892 /* Now search for duplicate in a manner that depends on the name. */
5896 for (i = switchnum + 1; i < n_switches; i++)
5897 if (switches[i].part1[0] == 'O')
5899 switches[switchnum].validated = 1;
5900 switches[switchnum].live_cond = SWITCH_FALSE;
5905 case 'W': case 'f': case 'm':
5906 if (! strncmp (name + 1, "no-", 3))
5908 /* We have Xno-YYY, search for XYYY. */
5909 for (i = switchnum + 1; i < n_switches; i++)
5910 if (switches[i].part1[0] == name[0]
5911 && ! strcmp (&switches[i].part1[1], &name[4]))
5913 switches[switchnum].validated = 1;
5914 switches[switchnum].live_cond = SWITCH_FALSE;
5920 /* We have XYYY, search for Xno-YYY. */
5921 for (i = switchnum + 1; i < n_switches; i++)
5922 if (switches[i].part1[0] == name[0]
5923 && switches[i].part1[1] == 'n'
5924 && switches[i].part1[2] == 'o'
5925 && switches[i].part1[3] == '-'
5926 && !strcmp (&switches[i].part1[4], &name[1]))
5928 switches[switchnum].validated = 1;
5929 switches[switchnum].live_cond = SWITCH_FALSE;
5936 /* Otherwise the switch is live. */
5937 switches[switchnum].live_cond = SWITCH_LIVE;
5941 /* Pass a switch to the current accumulating command
5942 in the same form that we received it.
5943 SWITCHNUM identifies the switch; it is an index into
5944 the vector of switches gcc received, which is `switches'.
5945 This cannot fail since it never finishes a command line.
5947 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5950 give_switch (int switchnum, int omit_first_word)
5952 if (switches[switchnum].live_cond == SWITCH_IGNORE)
5955 if (!omit_first_word)
5957 do_spec_1 ("-", 0, NULL);
5958 do_spec_1 (switches[switchnum].part1, 1, NULL);
5961 if (switches[switchnum].args != 0)
5964 for (p = switches[switchnum].args; *p; p++)
5966 const char *arg = *p;
5968 do_spec_1 (" ", 0, NULL);
5971 unsigned length = strlen (arg);
5974 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5975 if (arg[length] == '.')
5977 ((char *)arg)[length] = 0;
5981 do_spec_1 (arg, 1, NULL);
5983 ((char *)arg)[length] = '.';
5984 do_spec_1 (suffix_subst, 1, NULL);
5987 do_spec_1 (arg, 1, NULL);
5991 do_spec_1 (" ", 0, NULL);
5992 switches[switchnum].validated = 1;
5995 /* Search for a file named NAME trying various prefixes including the
5996 user's -B prefix and some standard ones.
5997 Return the absolute file name found. If nothing is found, return NAME. */
6000 find_file (const char *name)
6002 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true);
6003 return newname ? newname : name;
6006 /* Determine whether a directory exists. If LINKER, return 0 for
6007 certain fixed names not needed by the linker. */
6010 is_directory (const char *path1, bool linker)
6017 /* Ensure the string ends with "/.". The resulting path will be a
6018 directory even if the given path is a symbolic link. */
6019 len1 = strlen (path1);
6020 path = alloca (3 + len1);
6021 memcpy (path, path1, len1);
6023 if (!IS_DIR_SEPARATOR (cp[-1]))
6024 *cp++ = DIR_SEPARATOR;
6028 /* Exclude directories that the linker is known to search. */
6030 && IS_DIR_SEPARATOR (path[0])
6032 && strncmp (path + 1, "lib", 3) == 0)
6034 && strncmp (path + 1, "usr", 3) == 0
6035 && IS_DIR_SEPARATOR (path[4])
6036 && strncmp (path + 5, "lib", 3) == 0)))
6039 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
6042 /* Set up the various global variables to indicate that we're processing
6043 the input file named FILENAME. */
6046 set_input (const char *filename)
6050 input_filename = filename;
6051 input_filename_length = strlen (input_filename);
6053 input_basename = input_filename;
6054 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
6055 /* Skip drive name so 'x:foo' is handled properly. */
6056 if (input_basename[1] == ':')
6057 input_basename += 2;
6059 for (p = input_basename; *p; p++)
6060 if (IS_DIR_SEPARATOR (*p))
6061 input_basename = p + 1;
6063 /* Find a suffix starting with the last period,
6064 and set basename_length to exclude that suffix. */
6065 basename_length = strlen (input_basename);
6066 suffixed_basename_length = basename_length;
6067 p = input_basename + basename_length;
6068 while (p != input_basename && *p != '.')
6070 if (*p == '.' && p != input_basename)
6072 basename_length = p - input_basename;
6073 input_suffix = p + 1;
6078 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
6079 we will need to do a stat on the input_filename. The
6080 INPUT_STAT_SET signals that the stat is needed. */
6084 /* On fatal signals, delete all the temporary files. */
6087 fatal_error (int signum)
6089 signal (signum, SIG_DFL);
6090 delete_failure_queue ();
6091 delete_temp_files ();
6092 /* Get the same signal again, this time not handled,
6093 so its normal effect occurs. */
6094 kill (getpid (), signum);
6097 extern int main (int, char **);
6100 main (int argc, char **argv)
6104 int linker_was_run = 0;
6105 int lang_n_infiles = 0;
6106 int num_linker_inputs = 0;
6107 char *explicit_link_files;
6110 struct user_specs *uptr;
6111 char **old_argv = argv;
6113 p = argv[0] + strlen (argv[0]);
6114 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
6118 xmalloc_set_program_name (programname);
6120 expandargv (&argc, &argv);
6122 /* Determine if any expansions were made. */
6123 if (argv != old_argv)
6124 at_file_supplied = true;
6126 prune_options (&argc, &argv);
6128 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6129 /* Perform host dependent initialization when needed. */
6130 GCC_DRIVER_HOST_INITIALIZATION;
6133 /* Unlock the stdio streams. */
6134 unlock_std_streams ();
6136 gcc_init_libintl ();
6138 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
6139 signal (SIGINT, fatal_error);
6141 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
6142 signal (SIGHUP, fatal_error);
6144 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
6145 signal (SIGTERM, fatal_error);
6147 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
6148 signal (SIGPIPE, fatal_error);
6151 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6152 receive the signal. A different setting is inheritable */
6153 signal (SIGCHLD, SIG_DFL);
6156 /* Allocate the argument vector. */
6159 obstack_init (&obstack);
6161 /* Build multilib_select, et. al from the separate lines that make up each
6162 multilib selection. */
6164 const char *const *q = multilib_raw;
6167 obstack_init (&multilib_obstack);
6168 while ((p = *q++) != (char *) 0)
6169 obstack_grow (&multilib_obstack, p, strlen (p));
6171 obstack_1grow (&multilib_obstack, 0);
6172 multilib_select = XOBFINISH (&multilib_obstack, const char *);
6174 q = multilib_matches_raw;
6175 while ((p = *q++) != (char *) 0)
6176 obstack_grow (&multilib_obstack, p, strlen (p));
6178 obstack_1grow (&multilib_obstack, 0);
6179 multilib_matches = XOBFINISH (&multilib_obstack, const char *);
6181 q = multilib_exclusions_raw;
6182 while ((p = *q++) != (char *) 0)
6183 obstack_grow (&multilib_obstack, p, strlen (p));
6185 obstack_1grow (&multilib_obstack, 0);
6186 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *);
6189 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
6192 obstack_1grow (&multilib_obstack, ' ');
6193 obstack_grow (&multilib_obstack,
6194 multilib_defaults_raw[i],
6195 strlen (multilib_defaults_raw[i]));
6199 obstack_1grow (&multilib_obstack, 0);
6200 multilib_defaults = XOBFINISH (&multilib_obstack, const char *);
6203 /* Set up to remember the pathname of gcc and any options
6204 needed for collect. We use argv[0] instead of programname because
6205 we need the complete pathname. */
6206 obstack_init (&collect_obstack);
6207 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6208 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6209 putenv (XOBFINISH (&collect_obstack, char *));
6211 #ifdef INIT_ENVIRONMENT
6212 /* Set up any other necessary machine specific environment variables. */
6213 putenv (INIT_ENVIRONMENT);
6216 /* Make a table of what switches there are (switches, n_switches).
6217 Make a table of specified input files (infiles, n_infiles).
6218 Decode switches that are handled locally. */
6220 process_command (argc, (const char **) argv);
6222 /* Initialize the vector of specs to just the default.
6223 This means one element containing 0s, as a terminator. */
6225 compilers = xmalloc (sizeof default_compilers);
6226 memcpy (compilers, default_compilers, sizeof default_compilers);
6227 n_compilers = n_default_compilers;
6229 /* Read specs from a file if there is one. */
6231 machine_suffix = concat (spec_machine, dir_separator_str,
6232 spec_version, dir_separator_str, NULL);
6233 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6235 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true);
6236 /* Read the specs file unless it is a default one. */
6237 if (specs_file != 0 && strcmp (specs_file, "specs"))
6238 read_specs (specs_file, TRUE);
6242 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6243 for any override of as, ld and libraries. */
6244 specs_file = alloca (strlen (standard_exec_prefix)
6245 + strlen (just_machine_suffix) + sizeof ("specs"));
6247 strcpy (specs_file, standard_exec_prefix);
6248 strcat (specs_file, just_machine_suffix);
6249 strcat (specs_file, "specs");
6250 if (access (specs_file, R_OK) == 0)
6251 read_specs (specs_file, TRUE);
6253 /* Process any configure-time defaults specified for the command line
6254 options, via OPTION_DEFAULT_SPECS. */
6255 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6256 do_option_spec (option_default_specs[i].name,
6257 option_default_specs[i].spec);
6259 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6260 of the command line. */
6262 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6263 do_self_spec (driver_self_specs[i]);
6265 /* If not cross-compiling, look for executables in the standard
6267 if (*cross_compile == '0')
6269 if (*md_exec_prefix)
6271 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6272 PREFIX_PRIORITY_LAST, 0, 0);
6276 /* Process sysroot_suffix_spec. */
6277 if (*sysroot_suffix_spec != 0
6278 && do_spec_2 (sysroot_suffix_spec) == 0)
6280 if (argbuf_index > 1)
6281 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6282 else if (argbuf_index == 1)
6283 target_sysroot_suffix = xstrdup (argbuf[argbuf_index -1]);
6286 #ifdef HAVE_LD_SYSROOT
6287 /* Pass the --sysroot option to the linker, if it supports that. If
6288 there is a sysroot_suffix_spec, it has already been processed by
6289 this point, so target_system_root really is the system root we
6291 if (target_system_root)
6293 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6294 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
6295 set_spec ("link", XOBFINISH (&obstack, const char *));
6299 /* Process sysroot_hdrs_suffix_spec. */
6300 if (*sysroot_hdrs_suffix_spec != 0
6301 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6303 if (argbuf_index > 1)
6304 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6305 else if (argbuf_index == 1)
6306 target_sysroot_hdrs_suffix = xstrdup (argbuf[argbuf_index -1]);
6309 /* Look for startfiles in the standard places. */
6310 if (*startfile_prefix_spec != 0
6311 && do_spec_2 (startfile_prefix_spec) == 0
6312 && do_spec_1 (" ", 0, NULL) == 0)
6315 for (ndx = 0; ndx < argbuf_index; ndx++)
6316 add_sysrooted_prefix (&startfile_prefixes, argbuf[ndx], "BINUTILS",
6317 PREFIX_PRIORITY_LAST, 0, 1);
6319 /* We should eventually get rid of all these and stick to
6320 startfile_prefix_spec exclusively. */
6321 else if (*cross_compile == '0' || target_system_root)
6323 if (*md_startfile_prefix)
6324 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6325 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6327 if (*md_startfile_prefix_1)
6328 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6329 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6331 /* If standard_startfile_prefix is relative, base it on
6332 standard_exec_prefix. This lets us move the installed tree
6333 as a unit. If GCC_EXEC_PREFIX is defined, base
6334 standard_startfile_prefix on that as well.
6336 If the prefix is relative, only search it for native compilers;
6337 otherwise we will search a directory containing host libraries. */
6338 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
6339 add_sysrooted_prefix (&startfile_prefixes,
6340 standard_startfile_prefix, "BINUTILS",
6341 PREFIX_PRIORITY_LAST, 0, 1);
6342 else if (*cross_compile == '0')
6344 add_prefix (&startfile_prefixes,
6345 concat (gcc_exec_prefix
6346 ? gcc_exec_prefix : standard_exec_prefix,
6348 standard_startfile_prefix, NULL),
6349 NULL, PREFIX_PRIORITY_LAST, 0, 1);
6352 /* Sysrooted prefixes are relocated because target_system_root is
6353 also relocated by gcc_exec_prefix. */
6354 if (*standard_startfile_prefix_1)
6355 add_sysrooted_prefix (&startfile_prefixes,
6356 standard_startfile_prefix_1, "BINUTILS",
6357 PREFIX_PRIORITY_LAST, 0, 1);
6358 if (*standard_startfile_prefix_2)
6359 add_sysrooted_prefix (&startfile_prefixes,
6360 standard_startfile_prefix_2, "BINUTILS",
6361 PREFIX_PRIORITY_LAST, 0, 1);
6364 /* Process any user specified specs in the order given on the command
6366 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6368 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6370 read_specs (filename ? filename : uptr->filename, FALSE);
6373 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6374 if (gcc_exec_prefix)
6375 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6376 spec_version, dir_separator_str, NULL);
6378 /* Now we have the specs.
6379 Set the `valid' bits for switches that match anything in any spec. */
6381 validate_all_switches ();
6383 /* Now that we have the switches and the specs, set
6384 the subdirectory based on the options. */
6385 set_multilib_dir ();
6387 /* Warn about any switches that no pass was interested in. */
6389 for (i = 0; (int) i < n_switches; i++)
6390 if (! switches[i].validated)
6391 error ("unrecognized option '-%s'", switches[i].part1);
6393 /* Obey some of the options. */
6395 if (print_search_dirs)
6397 printf (_("install: %s%s\n"),
6398 gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
6399 gcc_exec_prefix ? "" : machine_suffix);
6400 printf (_("programs: %s\n"),
6401 build_search_list (&exec_prefixes, "", false, false));
6402 printf (_("libraries: %s\n"),
6403 build_search_list (&startfile_prefixes, "", false, true));
6407 if (print_file_name)
6409 printf ("%s\n", find_file (print_file_name));
6413 if (print_prog_name)
6415 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6416 printf ("%s\n", (newname ? newname : print_prog_name));
6420 if (print_multi_lib)
6422 print_multilib_info ();
6426 if (print_multi_directory)
6428 if (multilib_dir == NULL)
6431 printf ("%s\n", multilib_dir);
6435 if (print_multi_os_directory)
6437 if (multilib_os_dir == NULL)
6440 printf ("%s\n", multilib_os_dir);
6444 if (print_sysroot_headers_suffix)
6446 if (*sysroot_hdrs_suffix_spec)
6448 printf("%s\n", (target_sysroot_hdrs_suffix
6449 ? target_sysroot_hdrs_suffix
6454 /* The error status indicates that only one set of fixed
6455 headers should be built. */
6456 fatal ("not configured with sysroot headers suffix");
6459 if (print_help_list)
6465 printf (_("\nFor bug reporting instructions, please see:\n"));
6466 printf ("%s.\n", bug_report_url);
6471 /* We do not exit here. Instead we have created a fake input file
6472 called 'help-dummy' which needs to be compiled, and we pass this
6473 on the various sub-processes, along with the --help switch. */
6481 notice ("Target: %s\n", spec_machine);
6482 notice ("Configured with: %s\n", configuration_arguments);
6484 #ifdef THREAD_MODEL_SPEC
6485 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6486 but there's no point in doing all this processing just to get
6487 thread_model back. */
6488 obstack_init (&obstack);
6489 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6490 obstack_1grow (&obstack, '\0');
6491 thrmod = XOBFINISH (&obstack, const char *);
6493 thrmod = thread_model;
6496 notice ("Thread model: %s\n", thrmod);
6498 /* compiler_version is truncated at the first space when initialized
6499 from version string, so truncate version_string at the first space
6500 before comparing. */
6501 for (n = 0; version_string[n]; n++)
6502 if (version_string[n] == ' ')
6505 if (! strncmp (version_string, compiler_version, n)
6506 && compiler_version[n] == 0)
6507 notice ("gcc version %s\n", version_string);
6509 notice ("gcc driver version %s executing gcc version %s\n",
6510 version_string, compiler_version);
6516 if (n_infiles == added_libraries)
6517 fatal ("no input files");
6519 /* Make a place to record the compiler output file names
6520 that correspond to the input files. */
6523 i += lang_specific_extra_outfiles;
6524 outfiles = XCNEWVEC (const char *, i);
6526 /* Record which files were specified explicitly as link input. */
6528 explicit_link_files = XCNEWVEC (char, n_infiles);
6531 combine_inputs = true;
6533 combine_inputs = false;
6535 for (i = 0; (int) i < n_infiles; i++)
6537 const char *name = infiles[i].name;
6538 struct compiler *compiler = lookup_compiler (name,
6540 infiles[i].language);
6542 if (compiler && !(compiler->combinable))
6543 combine_inputs = false;
6545 if (lang_n_infiles > 0 && compiler != input_file_compiler
6546 && infiles[i].language && infiles[i].language[0] != '*')
6547 infiles[i].incompiler = compiler;
6551 input_file_compiler = compiler;
6552 infiles[i].incompiler = compiler;
6556 /* Since there is no compiler for this input file, assume it is a
6558 explicit_link_files[i] = 1;
6559 infiles[i].incompiler = NULL;
6561 infiles[i].compiled = false;
6562 infiles[i].preprocessed = false;
6565 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1)
6566 fatal ("cannot specify -o with -c or -S with multiple files");
6568 if (combine_flag && save_temps_flag)
6570 bool save_combine_inputs = combine_inputs;
6571 /* Must do a separate pre-processing pass for C & Objective-C files, to
6572 obtain individual .i files. */
6574 combine_inputs = false;
6575 for (i = 0; (int) i < n_infiles; i++)
6577 int this_file_error = 0;
6579 input_file_number = i;
6580 set_input (infiles[i].name);
6581 if (infiles[i].incompiler
6582 && (infiles[i].incompiler)->needs_preprocessing)
6583 input_file_compiler = infiles[i].incompiler;
6587 if (input_file_compiler)
6589 if (input_file_compiler->spec[0] == '#')
6591 error ("%s: %s compiler not installed on this system",
6592 input_filename, &input_file_compiler->spec[1]);
6593 this_file_error = 1;
6597 value = do_spec (input_file_compiler->spec);
6598 infiles[i].preprocessed = true;
6599 if (!have_o_argbuf_index)
6600 fatal ("spec '%s' is invalid", input_file_compiler->spec);
6601 infiles[i].name = argbuf[have_o_argbuf_index];
6602 infiles[i].incompiler
6603 = lookup_compiler (infiles[i].name,
6604 strlen (infiles[i].name),
6605 infiles[i].language);
6608 this_file_error = 1;
6612 if (this_file_error)
6614 delete_failure_queue ();
6618 clear_failure_queue ();
6620 combine_inputs = save_combine_inputs;
6623 for (i = 0; (int) i < n_infiles; i++)
6625 int this_file_error = 0;
6627 /* Tell do_spec what to substitute for %i. */
6629 input_file_number = i;
6630 set_input (infiles[i].name);
6632 if (infiles[i].compiled)
6635 /* Use the same thing in %o, unless cp->spec says otherwise. */
6637 outfiles[i] = input_filename;
6639 /* Figure out which compiler from the file's suffix. */
6641 if (! combine_inputs)
6643 = lookup_compiler (infiles[i].name, input_filename_length,
6644 infiles[i].language);
6646 input_file_compiler = infiles[i].incompiler;
6648 if (input_file_compiler)
6650 /* Ok, we found an applicable compiler. Run its spec. */
6652 if (input_file_compiler->spec[0] == '#')
6654 error ("%s: %s compiler not installed on this system",
6655 input_filename, &input_file_compiler->spec[1]);
6656 this_file_error = 1;
6660 value = do_spec (input_file_compiler->spec);
6661 infiles[i].compiled = true;
6663 this_file_error = 1;
6667 /* If this file's name does not contain a recognized suffix,
6668 record it as explicit linker input. */
6671 explicit_link_files[i] = 1;
6673 /* Clear the delete-on-failure queue, deleting the files in it
6674 if this compilation failed. */
6676 if (this_file_error)
6678 delete_failure_queue ();
6681 /* If this compilation succeeded, don't delete those files later. */
6682 clear_failure_queue ();
6685 /* Reset the input file name to the first compile/object file name, for use
6686 with %b in LINK_SPEC. We use the first input file that we can find
6687 a compiler to compile it instead of using infiles.language since for
6688 languages other than C we use aliases that we then lookup later. */
6693 for (i = 0; i < n_infiles ; i++)
6694 if (infiles[i].language && infiles[i].language[0] != '*')
6696 set_input (infiles[i].name);
6701 if (error_count == 0)
6703 /* Make sure INPUT_FILE_NUMBER points to first available open
6705 input_file_number = n_infiles;
6706 if (lang_specific_pre_link ())
6710 /* Determine if there are any linker input files. */
6711 num_linker_inputs = 0;
6712 for (i = 0; (int) i < n_infiles; i++)
6713 if (explicit_link_files[i] || outfiles[i] != NULL)
6714 num_linker_inputs++;
6716 /* Run ld to link all the compiler output files. */
6718 if (num_linker_inputs > 0 && error_count == 0 && print_subprocess_help < 2)
6720 int tmp = execution_count;
6722 /* We'll use ld if we can't find collect2. */
6723 if (! strcmp (linker_name_spec, "collect2"))
6725 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false);
6727 linker_name_spec = "ld";
6729 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6731 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false);
6732 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true);
6734 if (print_subprocess_help == 1)
6736 printf (_("\nLinker options\n==============\n\n"));
6737 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
6738 " to the linker.\n\n"));
6741 value = do_spec (link_command_spec);
6744 linker_was_run = (tmp != execution_count);
6747 /* If options said don't run linker,
6748 complain about input files to be given to the linker. */
6750 if (! linker_was_run && error_count == 0)
6751 for (i = 0; (int) i < n_infiles; i++)
6752 if (explicit_link_files[i]
6753 && !(infiles[i].language && infiles[i].language[0] == '*'))
6754 error ("%s: linker input file unused because linking not done",
6757 /* Delete some or all of the temporary files we made. */
6760 delete_failure_queue ();
6761 delete_temp_files ();
6763 if (print_help_list)
6765 printf (("\nFor bug reporting instructions, please see:\n"));
6766 printf ("%s\n", bug_report_url);
6769 return (signal_count != 0 ? 2
6770 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
6774 /* Find the proper compilation spec for the file name NAME,
6775 whose length is LENGTH. LANGUAGE is the specified language,
6776 or 0 if this file is to be passed to the linker. */
6778 static struct compiler *
6779 lookup_compiler (const char *name, size_t length, const char *language)
6781 struct compiler *cp;
6783 /* If this was specified by the user to be a linker input, indicate that. */
6784 if (language != 0 && language[0] == '*')
6787 /* Otherwise, look for the language, if one is spec'd. */
6790 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6791 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6794 error ("language %s not recognized", language);
6798 /* Look for a suffix. */
6799 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6801 if (/* The suffix `-' matches only the file name `-'. */
6802 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6803 || (strlen (cp->suffix) < length
6804 /* See if the suffix matches the end of NAME. */
6805 && !strcmp (cp->suffix,
6806 name + length - strlen (cp->suffix))
6811 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6812 /* Look again, but case-insensitively this time. */
6814 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6816 if (/* The suffix `-' matches only the file name `-'. */
6817 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6818 || (strlen (cp->suffix) < length
6819 /* See if the suffix matches the end of NAME. */
6820 && ((!strcmp (cp->suffix,
6821 name + length - strlen (cp->suffix))
6822 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6823 && !strcasecmp (cp->suffix,
6824 name + length - strlen (cp->suffix)))
6830 if (cp >= compilers)
6832 if (cp->spec[0] != '@')
6833 /* A non-alias entry: return it. */
6836 /* An alias entry maps a suffix to a language.
6837 Search for the language; pass 0 for NAME and LENGTH
6838 to avoid infinite recursion if language not found. */
6839 return lookup_compiler (NULL, 0, cp->spec + 1);
6845 save_string (const char *s, int len)
6847 char *result = XNEWVEC (char, len + 1);
6849 memcpy (result, s, len);
6855 pfatal_with_name (const char *name)
6857 perror_with_name (name);
6858 delete_temp_files ();
6863 perror_with_name (const char *name)
6865 error ("%s: %s", name, xstrerror (errno));
6868 /* Output an error message and exit. */
6871 fancy_abort (const char *file, int line, const char *func)
6873 fatal_ice ("internal gcc abort in %s, at %s:%d", func, file, line);
6876 /* Output an error message and exit. */
6879 fatal_ice (const char *cmsgid, ...)
6883 va_start (ap, cmsgid);
6885 fprintf (stderr, "%s: ", programname);
6886 vfprintf (stderr, _(cmsgid), ap);
6888 fprintf (stderr, "\n");
6889 delete_temp_files ();
6890 exit (pass_exit_codes ? ICE_EXIT_CODE : 1);
6894 fatal (const char *cmsgid, ...)
6898 va_start (ap, cmsgid);
6900 fprintf (stderr, "%s: ", programname);
6901 vfprintf (stderr, _(cmsgid), ap);
6903 fprintf (stderr, "\n");
6904 delete_temp_files ();
6908 /* The argument is actually c-format, not gcc-internal-format,
6909 but because functions with identical names are used through
6910 the rest of the compiler with gcc-internal-format, we just
6911 need to hope all users of these functions use the common
6912 subset between c-format and gcc-internal-format. */
6915 error (const char *gmsgid, ...)
6919 va_start (ap, gmsgid);
6920 fprintf (stderr, "%s: ", programname);
6921 vfprintf (stderr, _(gmsgid), ap);
6924 fprintf (stderr, "\n");
6928 notice (const char *cmsgid, ...)
6932 va_start (ap, cmsgid);
6933 vfprintf (stderr, _(cmsgid), ap);
6938 validate_switches_from_spec (const char *spec)
6940 const char *p = spec;
6943 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
6944 /* We have a switch spec. */
6945 p = validate_switches (p + 1);
6949 validate_all_switches (void)
6951 struct compiler *comp;
6952 struct spec_list *spec;
6954 for (comp = compilers; comp->spec; comp++)
6955 validate_switches_from_spec (comp->spec);
6957 /* Look through the linked list of specs read from the specs file. */
6958 for (spec = specs; spec; spec = spec->next)
6959 validate_switches_from_spec (*spec->ptr_spec);
6961 validate_switches_from_spec (link_command_spec);
6964 /* Look at the switch-name that comes after START
6965 and mark as valid all supplied switches that match it. */
6968 validate_switches (const char *start)
6970 const char *p = start;
6974 bool suffix = false;
6975 bool starred = false;
6977 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
6986 if (*p == '.' || *p == ',')
6990 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
6991 || *p == ',' || *p == '.' || *p == '@')
6996 starred = true, p++;
7002 /* Mark all matching switches as valid. */
7003 for (i = 0; i < n_switches; i++)
7004 if (!strncmp (switches[i].part1, atom, len)
7005 && (starred || switches[i].part1[len] == 0))
7006 switches[i].validated = 1;
7010 if (*p && (p[-1] == '|' || p[-1] == '&'))
7013 if (*p && p[-1] == ':')
7015 while (*p && *p != ';' && *p != '}')
7020 if (*p == '{' || *p == '<')
7021 p = validate_switches (p+1);
7022 else if (p[0] == 'W' && p[1] == '{')
7023 p = validate_switches (p+2);
7030 if (*p && p[-1] == ';')
7044 static struct mdswitchstr *mdswitches;
7045 static int n_mdswitches;
7047 /* Check whether a particular argument was used. The first time we
7048 canonicalize the switches to keep only the ones we care about. */
7051 used_arg (const char *p, int len)
7056 const char *replace;
7061 static struct mswitchstr *mswitches;
7062 static int n_mswitches;
7067 struct mswitchstr *matches;
7071 /* Break multilib_matches into the component strings of string
7072 and replacement string. */
7073 for (q = multilib_matches; *q != '\0'; q++)
7077 matches = alloca ((sizeof (struct mswitchstr)) * cnt);
7079 q = multilib_matches;
7088 fatal ("multilib spec '%s' is invalid", multilib_matches);
7092 matches[i].len = q - matches[i].str;
7094 matches[i].replace = ++q;
7095 while (*q != ';' && *q != '\0')
7098 goto invalid_matches;
7101 matches[i].rep_len = q - matches[i].replace;
7107 /* Now build a list of the replacement string for switches that we care
7108 about. Make sure we allocate at least one entry. This prevents
7109 xmalloc from calling fatal, and prevents us from re-executing this
7112 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1));
7113 for (i = 0; i < n_switches; i++)
7114 if (switches[i].live_cond != SWITCH_IGNORE)
7116 int xlen = strlen (switches[i].part1);
7117 for (j = 0; j < cnt; j++)
7118 if (xlen == matches[j].len
7119 && ! strncmp (switches[i].part1, matches[j].str, xlen))
7121 mswitches[n_mswitches].str = matches[j].replace;
7122 mswitches[n_mswitches].len = matches[j].rep_len;
7123 mswitches[n_mswitches].replace = (char *) 0;
7124 mswitches[n_mswitches].rep_len = 0;
7130 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7131 on the command line nor any options mutually incompatible with
7133 for (i = 0; i < n_mdswitches; i++)
7137 for (q = multilib_options; *q != '\0'; q++)
7143 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
7144 || strchr (" /", q[mdswitches[i].len]) == NULL)
7146 while (*q != ' ' && *q != '/' && *q != '\0')
7153 if (*q != ' ' && *q != '\0')
7155 while (*r != ' ' && *r != '\0')
7158 while (*q != ' ' && *q != '/' && *q != '\0')
7161 if (used_arg (r, q - r))
7166 mswitches[n_mswitches].str = mdswitches[i].str;
7167 mswitches[n_mswitches].len = mdswitches[i].len;
7168 mswitches[n_mswitches].replace = (char *) 0;
7169 mswitches[n_mswitches].rep_len = 0;
7182 for (i = 0; i < n_mswitches; i++)
7183 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
7190 default_arg (const char *p, int len)
7194 for (i = 0; i < n_mdswitches; i++)
7195 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
7201 /* Work out the subdirectory to use based on the options. The format of
7202 multilib_select is a list of elements. Each element is a subdirectory
7203 name followed by a list of options followed by a semicolon. The format
7204 of multilib_exclusions is the same, but without the preceding
7205 directory. First gcc will check the exclusions, if none of the options
7206 beginning with an exclamation point are present, and all of the other
7207 options are present, then we will ignore this completely. Passing
7208 that, gcc will consider each multilib_select in turn using the same
7209 rules for matching the options. If a match is found, that subdirectory
7213 set_multilib_dir (void)
7216 unsigned int this_path_len;
7217 const char *this_path, *this_arg;
7218 const char *start, *end;
7220 int ok, ndfltok, first;
7223 start = multilib_defaults;
7224 while (*start == ' ' || *start == '\t')
7226 while (*start != '\0')
7229 while (*start != ' ' && *start != '\t' && *start != '\0')
7231 while (*start == ' ' || *start == '\t')
7239 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches);
7240 for (start = multilib_defaults; *start != '\0'; start = end + 1)
7242 while (*start == ' ' || *start == '\t')
7248 for (end = start + 1;
7249 *end != ' ' && *end != '\t' && *end != '\0'; end++)
7252 obstack_grow (&multilib_obstack, start, end - start);
7253 obstack_1grow (&multilib_obstack, 0);
7254 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *);
7255 mdswitches[i++].len = end - start;
7262 p = multilib_exclusions;
7265 /* Ignore newlines. */
7272 /* Check the arguments. */
7279 fatal ("multilib exclusions '%s' is invalid",
7280 multilib_exclusions);
7290 while (*p != ' ' && *p != ';')
7293 goto invalid_exclusions;
7297 if (*this_arg != '!')
7305 ok = used_arg (this_arg, p - this_arg);
7320 p = multilib_select;
7323 /* Ignore newlines. */
7330 /* Get the initial path. */
7337 fatal ("multilib select '%s' is invalid",
7342 this_path_len = p - this_path;
7344 /* Check the arguments. */
7351 goto invalid_select;
7360 while (*p != ' ' && *p != ';')
7363 goto invalid_select;
7367 if (*this_arg != '!')
7375 /* If this is a default argument, we can just ignore it.
7376 This is true even if this_arg begins with '!'. Beginning
7377 with '!' does not mean that this argument is necessarily
7378 inappropriate for this library: it merely means that
7379 there is a more specific library which uses this
7380 argument. If this argument is a default, we need not
7381 consider that more specific library. */
7382 ok = used_arg (this_arg, p - this_arg);
7389 if (default_arg (this_arg, p - this_arg))
7398 if (this_path_len != 1
7399 || this_path[0] != '.')
7401 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1);
7404 strncpy (new_multilib_dir, this_path, this_path_len);
7405 new_multilib_dir[this_path_len] = '\0';
7406 q = strchr (new_multilib_dir, ':');
7409 multilib_dir = new_multilib_dir;
7416 const char *q = this_path, *end = this_path + this_path_len;
7418 while (q < end && *q != ':')
7422 char *new_multilib_os_dir = XNEWVEC (char, end - q);
7423 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
7424 new_multilib_os_dir[end - q - 1] = '\0';
7425 multilib_os_dir = new_multilib_os_dir;
7433 if (multilib_dir == NULL && multilib_os_dir != NULL
7434 && strcmp (multilib_os_dir, ".") == 0)
7436 free ((char *) multilib_os_dir);
7437 multilib_os_dir = NULL;
7439 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7440 multilib_os_dir = multilib_dir;
7443 /* Print out the multiple library subdirectory selection
7444 information. This prints out a series of lines. Each line looks
7445 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7446 required. Only the desired options are printed out, the negative
7447 matches. The options are print without a leading dash. There are
7448 no spaces to make it easy to use the information in the shell.
7449 Each subdirectory is printed only once. This assumes the ordering
7450 generated by the genmultilib script. Also, we leave out ones that match
7454 print_multilib_info (void)
7456 const char *p = multilib_select;
7457 const char *last_path = 0, *this_path;
7459 unsigned int last_path_len = 0;
7464 /* Ignore newlines. */
7471 /* Get the initial path. */
7478 fatal ("multilib select '%s' is invalid", multilib_select);
7484 /* When --disable-multilib was used but target defines
7485 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7486 to find multilib_os_dir, so skip them from output. */
7487 if (this_path[0] == '.' && this_path[1] == ':')
7490 /* Check for matches with the multilib_exclusions. We don't bother
7491 with the '!' in either list. If any of the exclusion rules match
7492 all of its options with the select rule, we skip it. */
7494 const char *e = multilib_exclusions;
7495 const char *this_arg;
7500 /* Ignore newlines. */
7507 /* Check the arguments. */
7516 fatal ("multilib exclusion '%s' is invalid",
7517 multilib_exclusions);
7528 while (*e != ' ' && *e != ';')
7531 goto invalid_exclusion;
7539 int len = e - this_arg;
7542 goto invalid_select;
7546 while (*q != ' ' && *q != ';')
7549 goto invalid_select;
7553 if (! strncmp (arg, this_arg,
7554 (len < q - arg) ? q - arg : len)
7555 || default_arg (this_arg, e - this_arg))
7585 /* If this is a duplicate, skip it. */
7586 skip = (last_path != 0
7587 && (unsigned int) (p - this_path) == last_path_len
7588 && ! strncmp (last_path, this_path, last_path_len));
7590 last_path = this_path;
7591 last_path_len = p - this_path;
7594 /* If this directory requires any default arguments, we can skip
7595 it. We will already have printed a directory identical to
7596 this one which does not require that default argument. */
7607 goto invalid_select;
7614 while (*q != ' ' && *q != ';')
7617 goto invalid_select;
7622 && default_arg (arg, q - arg))
7637 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7648 goto invalid_select;
7656 use_arg = *p != '!';
7661 while (*p != ' ' && *p != ';')
7664 goto invalid_select;
7676 /* If there are extra options, print them now. */
7677 if (multilib_extra && *multilib_extra)
7679 int print_at = TRUE;
7682 for (q = multilib_extra; *q != '\0'; q++)
7703 /* getenv built-in spec function.
7705 Returns the value of the environment variable given by its first
7706 argument, concatenated with the second argument. If the
7707 environment variable is not defined, a fatal error is issued. */
7710 getenv_spec_function (int argc, const char **argv)
7717 value = getenv (argv[0]);
7719 fatal ("environment variable \"%s\" not defined", argv[0]);
7721 return concat (value, argv[1], NULL);
7724 /* if-exists built-in spec function.
7726 Checks to see if the file specified by the absolute pathname in
7727 ARGS exists. Returns that pathname if found.
7729 The usual use for this function is to check for a library file
7730 (whose name has been expanded with %s). */
7733 if_exists_spec_function (int argc, const char **argv)
7735 /* Must have only one argument. */
7736 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7742 /* if-exists-else built-in spec function.
7744 This is like if-exists, but takes an additional argument which
7745 is returned if the first argument does not exist. */
7748 if_exists_else_spec_function (int argc, const char **argv)
7750 /* Must have exactly two arguments. */
7754 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7760 /* replace-outfile built-in spec function.
7762 This looks for the first argument in the outfiles array's name and
7763 replaces it with the second argument. */
7766 replace_outfile_spec_function (int argc, const char **argv)
7769 /* Must have exactly two arguments. */
7773 for (i = 0; i < n_infiles; i++)
7775 if (outfiles[i] && !strcmp (outfiles[i], argv[0]))
7776 outfiles[i] = xstrdup (argv[1]);
7781 /* Given two version numbers, compares the two numbers.
7782 A version number must match the regular expression
7783 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
7786 compare_version_strings (const char *v1, const char *v2)
7791 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
7792 REG_EXTENDED | REG_NOSUB) != 0)
7794 rresult = regexec (&r, v1, 0, NULL, 0);
7795 if (rresult == REG_NOMATCH)
7796 fatal ("invalid version number `%s'", v1);
7797 else if (rresult != 0)
7799 rresult = regexec (&r, v2, 0, NULL, 0);
7800 if (rresult == REG_NOMATCH)
7801 fatal ("invalid version number `%s'", v2);
7802 else if (rresult != 0)
7805 return strverscmp (v1, v2);
7809 /* version_compare built-in spec function.
7811 This takes an argument of the following form:
7813 <comparison-op> <arg1> [<arg2>] <switch> <result>
7815 and produces "result" if the comparison evaluates to true,
7816 and nothing if it doesn't.
7818 The supported <comparison-op> values are:
7820 >= true if switch is a later (or same) version than arg1
7822 < true if switch is an earlier version than arg1
7824 >< true if switch is arg1 or later, and earlier than arg2
7825 <> true if switch is earlier than arg1 or is arg2 or later
7827 If the switch is not present, the condition is false unless
7828 the first character of the <comparison-op> is '!'.
7831 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
7832 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
7835 version_compare_spec_function (int argc, const char **argv)
7839 const char *switch_value = NULL;
7844 fatal ("too few arguments to %%:version-compare");
7845 if (argv[0][0] == '\0')
7847 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!')
7849 if (argc != nargs + 3)
7850 fatal ("too many arguments to %%:version-compare");
7852 switch_len = strlen (argv[nargs + 1]);
7853 for (i = 0; i < n_switches; i++)
7854 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len)
7855 && check_live_switch (i, switch_len))
7856 switch_value = switches[i].part1 + switch_len;
7858 if (switch_value == NULL)
7862 comp1 = compare_version_strings (switch_value, argv[1]);
7864 comp2 = compare_version_strings (switch_value, argv[2]);
7866 comp2 = -1; /* This value unused. */
7869 switch (argv[0][0] << 8 | argv[0][1])
7871 case '>' << 8 | '=':
7872 result = comp1 >= 0;
7874 case '!' << 8 | '<':
7875 result = comp1 >= 0 || switch_value == NULL;
7880 case '!' << 8 | '>':
7881 result = comp1 < 0 || switch_value == NULL;
7883 case '>' << 8 | '<':
7884 result = comp1 >= 0 && comp2 < 0;
7886 case '<' << 8 | '>':
7887 result = comp1 < 0 || comp2 >= 0;
7891 fatal ("unknown operator '%s' in %%:version-compare", argv[0]);
7896 return argv[nargs + 2];
7899 /* %:include builtin spec function. This differs from %include in that it
7900 can be nested inside a spec, and thus be conditionalized. It takes
7901 one argument, the filename, and looks for it in the startfile path.
7902 The result is always NULL, i.e. an empty expansion. */
7905 include_spec_function (int argc, const char **argv)
7912 file = find_a_file (&startfile_prefixes, argv[0], R_OK, 0);
7913 read_specs (file ? file : argv[0], FALSE);
7918 /* %:print-asm-header spec function. Print a banner to say that the
7919 following output is from the assembler. */
7922 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED,
7923 const char **argv ATTRIBUTE_UNUSED)
7925 printf (_("Assembler options\n=================\n\n"));
7926 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));