1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987-2016 Free Software Foundation, Inc.
4 This file is part of GCC.
6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 3, or (at your option) any later
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING3. If not see
18 <http://www.gnu.org/licenses/>. */
20 /* This program is the user interface to the C compiler and possibly to
21 other compilers. It is used because compilation is a complicated procedure
22 which involves running several programs and passing temporary files between
23 them, forwarding the users switches to those programs selectively,
24 and deleting the temporary files at the end.
26 CC recognizes how to compile each input file by suffixes in the file names.
27 Once it knows which kind of compilation to perform, the procedure for
28 compilation is specified by a string called a "spec". */
32 #include "coretypes.h"
33 #include "multilib.h" /* before tm.h */
40 #include "diagnostic.h"
44 #include "filenames.h"
45 #include "spellcheck.h"
49 /* Manage the manipulation of env vars.
51 We poison "getenv" and "putenv", so that all enviroment-handling is
52 done through this class. Note that poisoning happens in the
53 preprocessor at the identifier level, and doesn't distinguish between
57 Hence we need to use "get" for the accessor method, not "getenv". */
62 void init (bool can_restore, bool debug);
63 const char *get (const char *name);
64 void xput (const char *string);
79 /* The singleton instance of class env_manager. */
81 static env_manager env;
83 /* Initializer for class env_manager.
85 We can't do this as a constructor since we have a statically
86 allocated instance ("env" above). */
89 env_manager::init (bool can_restore, bool debug)
91 m_can_restore = can_restore;
95 /* Get the value of NAME within the environment. Essentially
96 a wrapper for ::getenv, but adding logging, and the possibility
97 of caching results. */
100 env_manager::get (const char *name)
102 const char *result = ::getenv (name);
104 fprintf (stderr, "env_manager::getenv (%s) -> %s\n", name, result);
108 /* Put the given KEY=VALUE entry STRING into the environment.
109 If the env_manager was initialized with CAN_RESTORE set, then
110 also record the old value of KEY within the environment, so that it
111 can be later restored. */
114 env_manager::xput (const char *string)
117 fprintf (stderr, "env_manager::xput (%s)\n", string);
119 fnotice (stderr, "%s\n", string);
123 char *equals = strchr (const_cast <char *> (string), '=');
127 kv.m_key = xstrndup (string, equals - string);
128 const char *cur_value = ::getenv (kv.m_key);
130 fprintf (stderr, "saving old value: %s\n",cur_value);
131 kv.m_value = cur_value ? xstrdup (cur_value) : NULL;
132 m_keys.safe_push (kv);
135 ::putenv (CONST_CAST (char *, string));
138 /* Undo any xputenv changes made since last restore.
139 Can only be called if the env_manager was initialized with
140 CAN_RESTORE enabled. */
143 env_manager::restore ()
148 gcc_assert (m_can_restore);
150 FOR_EACH_VEC_ELT_REVERSE (m_keys, i, item)
153 printf ("restoring saved key: %s value: %s\n", item->m_key, item->m_value);
155 ::setenv (item->m_key, item->m_value, 1);
157 ::unsetenv (item->m_key);
159 free (item->m_value);
165 /* Forbid other uses of getenv and putenv. */
166 #if (GCC_VERSION >= 3000)
167 #pragma GCC poison getenv putenv
172 /* By default there is no special suffix for target executables. */
173 /* FIXME: when autoconf is fixed, remove the host check - dj */
174 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
175 #define HAVE_TARGET_EXECUTABLE_SUFFIX
178 /* By default there is no special suffix for host executables. */
179 #ifdef HOST_EXECUTABLE_SUFFIX
180 #define HAVE_HOST_EXECUTABLE_SUFFIX
182 #define HOST_EXECUTABLE_SUFFIX ""
185 /* By default, the suffix for target object files is ".o". */
186 #ifdef TARGET_OBJECT_SUFFIX
187 #define HAVE_TARGET_OBJECT_SUFFIX
189 #define TARGET_OBJECT_SUFFIX ".o"
192 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
194 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
195 #ifndef LIBRARY_PATH_ENV
196 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
199 /* If a stage of compilation returns an exit status >= 1,
200 compilation of that file ceases. */
202 #define MIN_FATAL_STATUS 1
204 /* Flag set by cppspec.c to 1. */
207 /* Flag set to nonzero if an @file argument has been supplied to gcc. */
208 static bool at_file_supplied;
210 /* Definition of string containing the arguments given to configure. */
211 #include "configargs.h"
213 /* Flag saying to print the command line options understood by gcc and its
216 static int print_help_list;
218 /* Flag saying to print the version of gcc and its sub-processes. */
220 static int print_version;
222 /* Flag indicating whether we should ONLY print the command and
223 arguments (like verbose_flag) without executing the command.
224 Displayed arguments are quoted so that the generated command
225 line is suitable for execution. This is intended for use in
226 shell scripts to capture the driver-generated command line. */
227 static int verbose_only_flag;
229 /* Flag indicating how to print command line options of sub-processes. */
231 static int print_subprocess_help;
233 /* Linker suffix passed to -fuse-ld=... */
234 static const char *use_ld;
236 /* Whether we should report subprocess execution times to a file. */
238 FILE *report_times_to_file = NULL;
240 /* Nonzero means place this string before uses of /, so that include
241 and library files can be found in an alternate location. */
243 #ifdef TARGET_SYSTEM_ROOT
244 #define DEFAULT_TARGET_SYSTEM_ROOT (TARGET_SYSTEM_ROOT)
246 #define DEFAULT_TARGET_SYSTEM_ROOT (0)
248 static const char *target_system_root = DEFAULT_TARGET_SYSTEM_ROOT;
250 /* Nonzero means pass the updated target_system_root to the compiler. */
252 static int target_system_root_changed;
254 /* Nonzero means append this string to target_system_root. */
256 static const char *target_sysroot_suffix = 0;
258 /* Nonzero means append this string to target_system_root for headers. */
260 static const char *target_sysroot_hdrs_suffix = 0;
262 /* Nonzero means write "temp" files in source directory
263 and use the source file's name in them, and don't delete them. */
265 static enum save_temps {
266 SAVE_TEMPS_NONE, /* no -save-temps */
267 SAVE_TEMPS_CWD, /* -save-temps in current directory */
268 SAVE_TEMPS_OBJ /* -save-temps in object directory */
271 /* Output file to use to get the object directory for -save-temps=obj */
272 static char *save_temps_prefix = 0;
273 static size_t save_temps_length = 0;
275 /* The compiler version. */
277 static const char *compiler_version;
279 /* The target version. */
281 static const char *const spec_version = DEFAULT_TARGET_VERSION;
283 /* The target machine. */
285 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
286 static const char *spec_host_machine = DEFAULT_REAL_TARGET_MACHINE;
288 /* List of offload targets. Separated by colon. Empty string for
289 -foffload=disable. */
291 static char *offload_targets = NULL;
293 /* Nonzero if cross-compiling.
294 When -b is used, the value comes from the `specs' file. */
296 #ifdef CROSS_DIRECTORY_STRUCTURE
297 static const char *cross_compile = "1";
299 static const char *cross_compile = "0";
302 /* Greatest exit code of sub-processes that has been encountered up to
304 static int greatest_status = 1;
306 /* This is the obstack which we use to allocate many strings. */
308 static struct obstack obstack;
310 /* This is the obstack to build an environment variable to pass to
311 collect2 that describes all of the relevant switches of what to
312 pass the compiler in building the list of pointers to constructors
315 static struct obstack collect_obstack;
317 /* Forward declaration for prototypes. */
321 static void init_spec (void);
322 static void store_arg (const char *, int, int);
323 static void insert_wrapper (const char *);
324 static char *load_specs (const char *);
325 static void read_specs (const char *, bool, bool);
326 static void set_spec (const char *, const char *, bool);
327 static struct compiler *lookup_compiler (const char *, size_t, const char *);
328 static char *build_search_list (const struct path_prefix *, const char *,
330 static void xputenv (const char *);
331 static void putenv_from_prefixes (const struct path_prefix *, const char *,
333 static int access_check (const char *, int);
334 static char *find_a_file (const struct path_prefix *, const char *, int, bool);
335 static void add_prefix (struct path_prefix *, const char *, const char *,
337 static void add_sysrooted_prefix (struct path_prefix *, const char *,
338 const char *, int, int, int);
339 static char *skip_whitespace (char *);
340 static void delete_if_ordinary (const char *);
341 static void delete_temp_files (void);
342 static void delete_failure_queue (void);
343 static void clear_failure_queue (void);
344 static int check_live_switch (int, int);
345 static const char *handle_braces (const char *);
346 static inline bool input_suffix_matches (const char *, const char *);
347 static inline bool switch_matches (const char *, const char *, int);
348 static inline void mark_matching_switches (const char *, const char *, int);
349 static inline void process_marked_switches (void);
350 static const char *process_brace_body (const char *, const char *, const char *, int, int);
351 static const struct spec_function *lookup_spec_function (const char *);
352 static const char *eval_spec_function (const char *, const char *);
353 static const char *handle_spec_function (const char *, bool *);
354 static char *save_string (const char *, int);
355 static void set_collect_gcc_options (void);
356 static int do_spec_1 (const char *, int, const char *);
357 static int do_spec_2 (const char *);
358 static void do_option_spec (const char *, const char *);
359 static void do_self_spec (const char *);
360 static const char *find_file (const char *);
361 static int is_directory (const char *, bool);
362 static const char *validate_switches (const char *, bool);
363 static void validate_all_switches (void);
364 static inline void validate_switches_from_spec (const char *, bool);
365 static void give_switch (int, int);
366 static int default_arg (const char *, int);
367 static void set_multilib_dir (void);
368 static void print_multilib_info (void);
369 static void perror_with_name (const char *);
370 static void display_help (void);
371 static void add_preprocessor_option (const char *, int);
372 static void add_assembler_option (const char *, int);
373 static void add_linker_option (const char *, int);
374 static void process_command (unsigned int, struct cl_decoded_option *);
375 static int execute (void);
376 static void alloc_args (void);
377 static void clear_args (void);
378 static void fatal_signal (int);
379 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
380 static void init_gcc_specs (struct obstack *, const char *, const char *,
383 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
384 static const char *convert_filename (const char *, int, int);
387 static void try_generate_repro (const char **argv);
388 static const char *getenv_spec_function (int, const char **);
389 static const char *if_exists_spec_function (int, const char **);
390 static const char *if_exists_else_spec_function (int, const char **);
391 static const char *sanitize_spec_function (int, const char **);
392 static const char *replace_outfile_spec_function (int, const char **);
393 static const char *remove_outfile_spec_function (int, const char **);
394 static const char *version_compare_spec_function (int, const char **);
395 static const char *include_spec_function (int, const char **);
396 static const char *find_file_spec_function (int, const char **);
397 static const char *find_plugindir_spec_function (int, const char **);
398 static const char *print_asm_header_spec_function (int, const char **);
399 static const char *compare_debug_dump_opt_spec_function (int, const char **);
400 static const char *compare_debug_self_opt_spec_function (int, const char **);
401 static const char *compare_debug_auxbase_opt_spec_function (int, const char **);
402 static const char *pass_through_libs_spec_func (int, const char **);
403 static const char *replace_extension_spec_func (int, const char **);
404 static const char *greater_than_spec_func (int, const char **);
405 static char *convert_white_space (char *);
407 /* The Specs Language
409 Specs are strings containing lines, each of which (if not blank)
410 is made up of a program name, and arguments separated by spaces.
411 The program name must be exact and start from root, since no path
412 is searched and it is unreliable to depend on the current working directory.
413 Redirection of input or output is not supported; the subprograms must
414 accept filenames saying what files to read and write.
416 In addition, the specs can contain %-sequences to substitute variable text
417 or for conditional text. Here is a table of all defined %-sequences.
418 Note that spaces are not generated automatically around the results of
419 expanding these sequences; therefore, you can concatenate them together
420 or with constant text in a single argument.
422 %% substitute one % into the program name or argument.
423 %i substitute the name of the input file being processed.
424 %b substitute the basename of the input file being processed.
425 This is the substring up to (and not including) the last period
426 and not including the directory unless -save-temps was specified
427 to put temporaries in a different location.
428 %B same as %b, but include the file suffix (text after the last period).
430 substitute a file name that has suffix SUFFIX and is chosen
431 once per compilation, and mark the argument a la %d. To reduce
432 exposure to denial-of-service attacks, the file name is now
433 chosen in a way that is hard to predict even when previously
434 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
435 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
436 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
437 had been pre-processed. Previously, %g was simply substituted
438 with a file name chosen once per compilation, without regard
439 to any appended suffix (which was therefore treated just like
440 ordinary text), making such attacks more likely to succeed.
442 like %g, but if -pipe is in effect, expands simply to "-".
444 like %g, but if -pipe is in effect, expands to nothing. (We have both
445 %| and %m to accommodate differences between system assemblers; see
446 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
448 like %g, but generates a new temporary file name even if %uSUFFIX
451 substitutes the last file name generated with %uSUFFIX, generating a
452 new one if there is no such last file name. In the absence of any
453 %uSUFFIX, this is just like %gSUFFIX, except they don't share
454 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
455 would involve the generation of two distinct file names, one
456 for each `%g.s' and another for each `%U.s'. Previously, %U was
457 simply substituted with a file name chosen for the previous %u,
458 without regard to any appended suffix.
460 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
461 writable, and if save-temps is off; otherwise, substitute the name
462 of a temporary file, just like %u. This temporary file is not
463 meant for communication between processes, but rather as a junk
466 substitutes .SUFFIX for the suffixes of a matched switch's args when
467 it is subsequently output with %*. SUFFIX is terminated by the next
469 %d marks the argument containing or following the %d as a
470 temporary file name, so that file will be deleted if GCC exits
471 successfully. Unlike %g, this contributes no text to the argument.
472 %w marks the argument containing or following the %w as the
473 "output file" of this compilation. This puts the argument
474 into the sequence of arguments that %o will substitute later.
475 %V indicates that this compilation produces no "output file".
477 like %{...} but mark last argument supplied within
478 as a file to be deleted on failure.
479 %o substitutes the names of all the output files, with spaces
480 automatically placed around them. You should write spaces
481 around the %o as well or the results are undefined.
482 %o is for use in the specs for running the linker.
483 Input files whose names have no recognized suffix are not compiled
484 at all, but they are included among the output files, so they will
486 %O substitutes the suffix for object files. Note that this is
487 handled specially when it immediately follows %g, %u, or %U
488 (with or without a suffix argument) because of the need for
489 those to form complete file names. The handling is such that
490 %O is treated exactly as if it had already been substituted,
491 except that %g, %u, and %U do not currently support additional
492 SUFFIX characters following %O as they would following, for
494 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
495 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
496 and -B options) and -imultilib as necessary.
497 %s current argument is the name of a library or startup file of some sort.
498 Search for that file in a standard list of directories
499 and substitute the full name found.
500 %eSTR Print STR as an error message. STR is terminated by a newline.
501 Use this when inconsistent options are detected.
502 %nSTR Print STR as a notice. STR is terminated by a newline.
503 %x{OPTION} Accumulate an option for %X.
504 %X Output the accumulated linker options specified by compilations.
505 %Y Output the accumulated assembler options specified by compilations.
506 %Z Output the accumulated preprocessor options specified by compilations.
507 %a process ASM_SPEC as a spec.
508 This allows config.h to specify part of the spec for running as.
509 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
510 used here. This can be used to run a post-processor after the
511 assembler has done its job.
512 %D Dump out a -L option for each directory in startfile_prefixes.
513 If multilib_dir is set, extra entries are generated with it affixed.
514 %l process LINK_SPEC as a spec.
515 %L process LIB_SPEC as a spec.
516 %M Output multilib_os_dir.
517 %G process LIBGCC_SPEC as a spec.
518 %R Output the concatenation of target_system_root and
519 target_sysroot_suffix.
520 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
521 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
522 %C process CPP_SPEC as a spec.
523 %1 process CC1_SPEC as a spec.
524 %2 process CC1PLUS_SPEC as a spec.
525 %* substitute the variable part of a matched option. (See below.)
526 Note that each comma in the substituted string is replaced by
527 a single space. A space is appended after the last substition
528 unless there is more text in current sequence.
529 %<S remove all occurrences of -S from the command line.
530 Note - this command is position dependent. % commands in the
531 spec string before this one will see -S, % commands in the
532 spec string after this one will not.
533 %>S Similar to "%<S", but keep it in the GCC command line.
534 %<S* remove all occurrences of all switches beginning with -S from the
537 Call the named function FUNCTION, passing it ARGS. ARGS is
538 first processed as a nested spec string, then split into an
539 argument vector in the usual fashion. The function returns
540 a string which is processed as if it had appeared literally
541 as part of the current spec.
542 %{S} substitutes the -S switch, if that switch was given to GCC.
543 If that switch was not specified, this substitutes nothing.
544 Here S is a metasyntactic variable.
545 %{S*} substitutes all the switches specified to GCC whose names start
546 with -S. This is used for -o, -I, etc; switches that take
547 arguments. GCC considers `-o foo' as being one switch whose
548 name starts with `o'. %{o*} would substitute this text,
549 including the space; thus, two arguments would be generated.
550 %{S*&T*} likewise, but preserve order of S and T options (the order
551 of S and T in the spec is not significant). Can be any number
552 of ampersand-separated variables; for each the wild card is
553 optional. Useful for CPP as %{D*&U*&A*}.
555 %{S:X} substitutes X, if the -S switch was given to GCC.
556 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
557 %{S*:X} substitutes X if one or more switches whose names start
558 with -S was given to GCC. Normally X is substituted only
559 once, no matter how many such switches appeared. However,
560 if %* appears somewhere in X, then X will be substituted
561 once for each matching switch, with the %* replaced by the
562 part of that switch that matched the '*'. A space will be
563 appended after the last substition unless there is more
564 text in current sequence.
565 %{.S:X} substitutes X, if processing a file with suffix S.
566 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
567 %{,S:X} substitutes X, if processing a file which will use spec S.
568 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
570 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
571 combined with '!', '.', ',', and '*' as above binding stronger
573 If %* appears in X, all of the alternatives must be starred, and
574 only the first matching alternative is substituted.
575 %{%:function(args):X}
576 Call function named FUNCTION with args ARGS. If the function
577 returns non-NULL, then X is substituted, if it returns
578 NULL, it isn't substituted.
579 %{S:X; if S was given to GCC, substitutes X;
580 T:Y; else if T was given to GCC, substitutes Y;
581 :D} else substitutes D. There can be as many clauses as you need.
582 This may be combined with '.', '!', ',', '|', and '*' as above.
584 %(Spec) processes a specification defined in a specs file as *Spec:
586 The conditional text X in a %{S:X} or similar construct may contain
587 other nested % constructs or spaces, or even newlines. They are
588 processed as usual, as described above. Trailing white space in X is
589 ignored. White space may also appear anywhere on the left side of the
590 colon in these constructs, except between . or * and the corresponding
593 The -O, -f, -g, -m, and -W switches are handled specifically in these
594 constructs. If another value of -O or the negated form of a -f, -m, or
595 -W switch is found later in the command line, the earlier switch
596 value is ignored, except with {S*} where S is just one letter; this
597 passes all matching options.
599 The character | at the beginning of the predicate text is used to indicate
600 that a command should be piped to the following command, but only if -pipe
603 Note that it is built into GCC which switches take arguments and which
604 do not. You might think it would be useful to generalize this to
605 allow each compiler's spec to say which switches take arguments. But
606 this cannot be done in a consistent fashion. GCC cannot even decide
607 which input files have been specified without knowing which switches
608 take arguments, and it must know which input files to compile in order
609 to tell which compilers to run.
611 GCC also knows implicitly that arguments starting in `-l' are to be
612 treated as compiler output files, and passed to the linker in their
613 proper position among the other output files. */
615 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
617 /* config.h can define ASM_SPEC to provide extra args to the assembler
618 or extra switch-translations. */
623 /* config.h can define ASM_FINAL_SPEC to run a post processor after
624 the assembler has run. */
625 #ifndef ASM_FINAL_SPEC
626 #define ASM_FINAL_SPEC \
628 objcopy --extract-dwo \
629 %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \
630 %{c:%{o*:%:replace-extension(%{o*:%*} .dwo)}%{!o*:%b.dwo}}%{!c:%b.dwo} \n\
631 objcopy --strip-dwo \
632 %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \
636 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
637 or extra switch-translations. */
642 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
643 or extra switch-translations. */
648 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
649 or extra switch-translations. */
651 #define CC1PLUS_SPEC ""
654 /* config.h can define LINK_SPEC to provide extra args to the linker
655 or extra switch-translations. */
660 /* config.h can define LIB_SPEC to override the default libraries. */
662 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
665 /* When using -fsplit-stack we need to wrap pthread_create, in order
666 to initialize the stack guard. We always use wrapping, rather than
667 shared library ordering, and we keep the wrapper function in
668 libgcc. This is not yet a real spec, though it could become one;
669 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping
670 only works with GNU ld and gold. */
671 #ifdef HAVE_GOLD_NON_DEFAULT_SPLIT_STACK
672 #define STACK_SPLIT_SPEC " %{fsplit-stack: -fuse-ld=gold --wrap=pthread_create}"
674 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}"
678 #define STATIC_LIBASAN_LIBS \
679 " %{static-libasan:%:include(libsanitizer.spec)%(link_libasan)}"
680 #ifdef LIBASAN_EARLY_SPEC
681 #define LIBASAN_SPEC STATIC_LIBASAN_LIBS
682 #elif defined(HAVE_LD_STATIC_DYNAMIC)
683 #define LIBASAN_SPEC "%{static-libasan:" LD_STATIC_OPTION \
684 "} -lasan %{static-libasan:" LD_DYNAMIC_OPTION "}" \
687 #define LIBASAN_SPEC "-lasan" STATIC_LIBASAN_LIBS
691 #ifndef LIBASAN_EARLY_SPEC
692 #define LIBASAN_EARLY_SPEC ""
696 #define STATIC_LIBTSAN_LIBS \
697 " %{static-libtsan:%:include(libsanitizer.spec)%(link_libtsan)}"
698 #ifdef LIBTSAN_EARLY_SPEC
699 #define LIBTSAN_SPEC STATIC_LIBTSAN_LIBS
700 #elif defined(HAVE_LD_STATIC_DYNAMIC)
701 #define LIBTSAN_SPEC "%{static-libtsan:" LD_STATIC_OPTION \
702 "} -ltsan %{static-libtsan:" LD_DYNAMIC_OPTION "}" \
705 #define LIBTSAN_SPEC "-ltsan" STATIC_LIBTSAN_LIBS
709 #ifndef LIBTSAN_EARLY_SPEC
710 #define LIBTSAN_EARLY_SPEC ""
714 #define STATIC_LIBLSAN_LIBS \
715 " %{static-liblsan:%:include(libsanitizer.spec)%(link_liblsan)}"
716 #ifdef LIBLSAN_EARLY_SPEC
717 #define LIBLSAN_SPEC STATIC_LIBLSAN_LIBS
718 #elif defined(HAVE_LD_STATIC_DYNAMIC)
719 #define LIBLSAN_SPEC "%{static-liblsan:" LD_STATIC_OPTION \
720 "} -llsan %{static-liblsan:" LD_DYNAMIC_OPTION "}" \
723 #define LIBLSAN_SPEC "-llsan" STATIC_LIBLSAN_LIBS
727 #ifndef LIBLSAN_EARLY_SPEC
728 #define LIBLSAN_EARLY_SPEC ""
731 #ifndef LIBUBSAN_SPEC
732 #define STATIC_LIBUBSAN_LIBS \
733 " %{static-libubsan:%:include(libsanitizer.spec)%(link_libubsan)}"
734 #ifdef HAVE_LD_STATIC_DYNAMIC
735 #define LIBUBSAN_SPEC "%{static-libubsan:" LD_STATIC_OPTION \
736 "} -lubsan %{static-libubsan:" LD_DYNAMIC_OPTION "}" \
739 #define LIBUBSAN_SPEC "-lubsan" STATIC_LIBUBSAN_LIBS
743 /* Linker options for compressed debug sections. */
744 #if HAVE_LD_COMPRESS_DEBUG == 0
745 /* No linker support. */
746 #define LINK_COMPRESS_DEBUG_SPEC \
747 " %{gz*:%e-gz is not supported in this configuration} "
748 #elif HAVE_LD_COMPRESS_DEBUG == 1
749 /* GNU style on input, GNU ld options. Reject, not useful. */
750 #define LINK_COMPRESS_DEBUG_SPEC \
751 " %{gz*:%e-gz is not supported in this configuration} "
752 #elif HAVE_LD_COMPRESS_DEBUG == 2
753 /* GNU style, GNU gold options. */
754 #define LINK_COMPRESS_DEBUG_SPEC \
755 " %{gz|gz=zlib-gnu:" LD_COMPRESS_DEBUG_OPTION "=zlib}" \
756 " %{gz=none:" LD_COMPRESS_DEBUG_OPTION "=none}" \
757 " %{gz=zlib:%e-gz=zlib is not supported in this configuration} "
758 #elif HAVE_LD_COMPRESS_DEBUG == 3
759 /* ELF gABI style. */
760 #define LINK_COMPRESS_DEBUG_SPEC \
761 " %{gz|gz=zlib:" LD_COMPRESS_DEBUG_OPTION "=zlib}" \
762 " %{gz=none:" LD_COMPRESS_DEBUG_OPTION "=none}" \
763 " %{gz=zlib-gnu:" LD_COMPRESS_DEBUG_OPTION "=zlib-gnu} "
765 #error Unknown value for HAVE_LD_COMPRESS_DEBUG.
768 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
771 #if defined(REAL_LIBGCC_SPEC)
772 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
773 #elif defined(LINK_LIBGCC_SPECIAL_1)
774 /* Have gcc do the search for libgcc.a. */
775 #define LIBGCC_SPEC "libgcc.a%s"
777 #define LIBGCC_SPEC "-lgcc"
781 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
782 #ifndef STARTFILE_SPEC
783 #define STARTFILE_SPEC \
784 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
787 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
789 #define ENDFILE_SPEC ""
793 #define LINKER_NAME "collect2"
796 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
797 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
802 /* Assembler options for compressed debug sections. */
803 #if HAVE_LD_COMPRESS_DEBUG < 2
804 /* Reject if the linker cannot write compressed debug sections. */
805 #define ASM_COMPRESS_DEBUG_SPEC \
806 " %{gz*:%e-gz is not supported in this configuration} "
807 #else /* HAVE_LD_COMPRESS_DEBUG >= 2 */
808 #if HAVE_AS_COMPRESS_DEBUG == 0
809 /* No assembler support. Ignore silently. */
810 #define ASM_COMPRESS_DEBUG_SPEC \
812 #elif HAVE_AS_COMPRESS_DEBUG == 1
813 /* GNU style, GNU as options. */
814 #define ASM_COMPRESS_DEBUG_SPEC \
815 " %{gz|gz=zlib-gnu:" AS_COMPRESS_DEBUG_OPTION "}" \
816 " %{gz=none:" AS_NO_COMPRESS_DEBUG_OPTION "}" \
817 " %{gz=zlib:%e-gz=zlib is not supported in this configuration} "
818 #elif HAVE_AS_COMPRESS_DEBUG == 2
819 /* ELF gABI style. */
820 #define ASM_COMPRESS_DEBUG_SPEC \
821 " %{gz|gz=zlib:" AS_COMPRESS_DEBUG_OPTION "=zlib}" \
822 " %{gz=none:" AS_COMPRESS_DEBUG_OPTION "=none}" \
823 " %{gz=zlib-gnu:" AS_COMPRESS_DEBUG_OPTION "=zlib-gnu} "
825 #error Unknown value for HAVE_AS_COMPRESS_DEBUG.
827 #endif /* HAVE_LD_COMPRESS_DEBUG >= 2 */
829 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
831 #ifndef ASM_DEBUG_SPEC
832 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
833 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
834 # define ASM_DEBUG_SPEC \
835 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
836 ? "%{!g0:%{gdwarf*:--gdwarf2}%{!gdwarf*:%{g*:--gstabs}}}" ASM_MAP \
837 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
839 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
840 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
842 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
843 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
847 #ifndef ASM_DEBUG_SPEC
848 # define ASM_DEBUG_SPEC ""
851 /* Here is the spec for running the linker, after compiling all files. */
853 /* This is overridable by the target in case they need to specify the
854 -lgcc and -lc order specially, yet not require them to override all
855 of LINK_COMMAND_SPEC. */
856 #ifndef LINK_GCC_C_SEQUENCE_SPEC
857 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
860 #ifndef LINK_SSP_SPEC
861 #ifdef TARGET_LIBC_PROVIDES_SSP
862 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
863 "|fstack-protector-strong|fstack-protector-explicit:}"
865 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
866 "|fstack-protector-strong|fstack-protector-explicit" \
867 ":-lssp_nonshared -lssp}"
871 #ifdef ENABLE_DEFAULT_PIE
872 #define NO_PIE_SPEC "no-pie|static"
873 #define PIE_SPEC NO_PIE_SPEC "|r|shared:;"
874 #define NO_FPIE1_SPEC "fno-pie"
875 #define FPIE1_SPEC NO_FPIE1_SPEC ":;"
876 #define NO_FPIE2_SPEC "fno-PIE"
877 #define FPIE2_SPEC NO_FPIE2_SPEC ":;"
878 #define NO_FPIE_SPEC NO_FPIE1_SPEC "|" NO_FPIE2_SPEC
879 #define FPIE_SPEC NO_FPIE_SPEC ":;"
880 #define NO_FPIC1_SPEC "fno-pic"
881 #define FPIC1_SPEC NO_FPIC1_SPEC ":;"
882 #define NO_FPIC2_SPEC "fno-PIC"
883 #define FPIC2_SPEC NO_FPIC2_SPEC ":;"
884 #define NO_FPIC_SPEC NO_FPIC1_SPEC "|" NO_FPIC2_SPEC
885 #define FPIC_SPEC NO_FPIC_SPEC ":;"
886 #define NO_FPIE1_AND_FPIC1_SPEC NO_FPIE1_SPEC "|" NO_FPIC1_SPEC
887 #define FPIE1_OR_FPIC1_SPEC NO_FPIE1_AND_FPIC1_SPEC ":;"
888 #define NO_FPIE2_AND_FPIC2_SPEC NO_FPIE2_SPEC "|" NO_FPIC2_SPEC
889 #define FPIE2_OR_FPIC2_SPEC NO_FPIE2_AND_FPIC2_SPEC ":;"
890 #define NO_FPIE_AND_FPIC_SPEC NO_FPIE_SPEC "|" NO_FPIC_SPEC
891 #define FPIE_OR_FPIC_SPEC NO_FPIE_AND_FPIC_SPEC ":;"
893 #define PIE_SPEC "pie"
894 #define NO_PIE_SPEC PIE_SPEC "|r|shared:;"
895 #define FPIE1_SPEC "fpie"
896 #define NO_FPIE1_SPEC FPIE1_SPEC ":;"
897 #define FPIE2_SPEC "fPIE"
898 #define NO_FPIE2_SPEC FPIE2_SPEC ":;"
899 #define FPIE_SPEC FPIE1_SPEC "|" FPIE2_SPEC
900 #define NO_FPIE_SPEC FPIE_SPEC ":;"
901 #define FPIC1_SPEC "fpic"
902 #define NO_FPIC1_SPEC FPIC1_SPEC ":;"
903 #define FPIC2_SPEC "fPIC"
904 #define NO_FPIC2_SPEC FPIC2_SPEC ":;"
905 #define FPIC_SPEC FPIC1_SPEC "|" FPIC2_SPEC
906 #define NO_FPIC_SPEC FPIC_SPEC ":;"
907 #define FPIE1_OR_FPIC1_SPEC FPIE1_SPEC "|" FPIC1_SPEC
908 #define NO_FPIE1_AND_FPIC1_SPEC FPIE1_OR_FPIC1_SPEC ":;"
909 #define FPIE2_OR_FPIC2_SPEC FPIE2_SPEC "|" FPIC2_SPEC
910 #define NO_FPIE2_AND_FPIC2_SPEC FPIE1_OR_FPIC2_SPEC ":;"
911 #define FPIE_OR_FPIC_SPEC FPIE_SPEC "|" FPIC_SPEC
912 #define NO_FPIE_AND_FPIC_SPEC FPIE_OR_FPIC_SPEC ":;"
915 #ifndef LINK_PIE_SPEC
918 #define LD_PIE_SPEC "-pie"
921 #define LD_PIE_SPEC ""
923 #define LINK_PIE_SPEC "%{no-pie:} " "%{" PIE_SPEC ":" LD_PIE_SPEC "} "
926 #ifndef LINK_BUILDID_SPEC
927 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
928 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
932 /* Conditional to test whether the LTO plugin is used or not.
933 FIXME: For slim LTO we will need to enable plugin unconditionally. This
934 still cause problems with PLUGIN_LD != LD and when plugin is built but
935 not useable. For GCC 4.6 we don't support slim LTO and thus we can enable
936 plugin only when LTO is enabled. We still honor explicit
937 -fuse-linker-plugin if the linker used understands -plugin. */
939 /* The linker has some plugin support. */
940 #if HAVE_LTO_PLUGIN > 0
941 /* The linker used has full plugin support, use LTO plugin by default. */
942 #if HAVE_LTO_PLUGIN == 2
943 #define PLUGIN_COND "!fno-use-linker-plugin:%{!fno-lto"
944 #define PLUGIN_COND_CLOSE "}"
946 /* The linker used has limited plugin support, use LTO plugin with explicit
947 -fuse-linker-plugin. */
948 #define PLUGIN_COND "fuse-linker-plugin"
949 #define PLUGIN_COND_CLOSE ""
951 #define LINK_PLUGIN_SPEC \
953 -plugin %(linker_plugin_file) \
954 -plugin-opt=%(lto_wrapper) \
955 -plugin-opt=-fresolution=%u.res \
956 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
959 /* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */
960 #define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\
961 %e-fuse-linker-plugin is not supported in this configuration}"
964 /* Linker command line options for -fsanitize= early on the command line. */
965 #ifndef SANITIZER_EARLY_SPEC
966 #define SANITIZER_EARLY_SPEC "\
967 %{!nostdlib:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_EARLY_SPEC "} \
968 %{%:sanitize(thread):" LIBTSAN_EARLY_SPEC "} \
969 %{%:sanitize(leak):" LIBLSAN_EARLY_SPEC "}}}"
972 /* Linker command line options for -fsanitize= late on the command line. */
973 #ifndef SANITIZER_SPEC
974 #define SANITIZER_SPEC "\
975 %{!nostdlib:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_SPEC "\
976 %{static:%ecannot specify -static with -fsanitize=address}}\
977 %{%:sanitize(thread):" LIBTSAN_SPEC "\
978 %{static:%ecannot specify -static with -fsanitize=thread}}\
979 %{%:sanitize(undefined):" LIBUBSAN_SPEC "}\
980 %{%:sanitize(leak):" LIBLSAN_SPEC "}}}"
983 #ifndef POST_LINK_SPEC
984 #define POST_LINK_SPEC ""
987 /* This is the spec to use, once the code for creating the vtable
988 verification runtime library, libvtv.so, has been created. Currently
989 the vtable verification runtime functions are in libstdc++, so we use
990 the spec just below this one. */
991 #ifndef VTABLE_VERIFICATION_SPEC
992 #define VTABLE_VERIFICATION_SPEC "\
993 %{!nostdlib:%{fvtable-verify=std: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}\
994 %{fvtable-verify=preinit: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}}"
1001 /* -u* was put back because both BSD and SysV seem to support it. */
1002 /* %{static:} simply prevents an error message if the target machine
1003 doesn't handle -static. */
1004 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
1005 scripts which exist in user specified directories, or in standard
1007 /* We pass any -flto flags on to the linker, which is expected
1008 to understand them. In practice, this means it had better be collect2. */
1009 /* %{e*} includes -export-dynamic; see comment in common.opt. */
1010 #ifndef LINK_COMMAND_SPEC
1011 #define LINK_COMMAND_SPEC "\
1012 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
1015 "%{flto|flto=*:%<fcompare-debug*} \
1016 %{flto} %{fno-lto} %{flto=*} %l " LINK_PIE_SPEC \
1017 "%{fuse-ld=*:-fuse-ld=%*} " LINK_COMPRESS_DEBUG_SPEC \
1018 "%X %{o*} %{e*} %{N} %{n} %{r}\
1019 %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}} \
1020 %{static:} %{L*} %(mfwrap) %(link_libgcc) " \
1021 VTABLE_VERIFICATION_SPEC " " SANITIZER_EARLY_SPEC " %o " CHKP_SPEC " \
1022 %{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1):\
1023 %:include(libgomp.spec)%(link_gomp)}\
1024 %{fcilkplus:%:include(libcilkrts.spec)%(link_cilkrts)}\
1025 %{fgnu-tm:%:include(libitm.spec)%(link_itm)}\
1026 %(mflib) " STACK_SPLIT_SPEC "\
1027 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} " SANITIZER_SPEC " \
1028 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
1029 %{!nostdlib:%{!nostartfiles:%E}} %{T*} \n%(post_link) }}}}}}"
1032 #ifndef LINK_LIBGCC_SPEC
1033 /* Generate -L options for startfile prefix list. */
1034 # define LINK_LIBGCC_SPEC "%D"
1037 #ifndef STARTFILE_PREFIX_SPEC
1038 # define STARTFILE_PREFIX_SPEC ""
1041 #ifndef SYSROOT_SPEC
1042 # define SYSROOT_SPEC "--sysroot=%R"
1045 #ifndef SYSROOT_SUFFIX_SPEC
1046 # define SYSROOT_SUFFIX_SPEC ""
1049 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
1050 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
1053 static const char *asm_debug = ASM_DEBUG_SPEC;
1054 static const char *cpp_spec = CPP_SPEC;
1055 static const char *cc1_spec = CC1_SPEC;
1056 static const char *cc1plus_spec = CC1PLUS_SPEC;
1057 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
1058 static const char *link_ssp_spec = LINK_SSP_SPEC;
1059 static const char *asm_spec = ASM_SPEC;
1060 static const char *asm_final_spec = ASM_FINAL_SPEC;
1061 static const char *link_spec = LINK_SPEC;
1062 static const char *lib_spec = LIB_SPEC;
1063 static const char *link_gomp_spec = "";
1064 static const char *libgcc_spec = LIBGCC_SPEC;
1065 static const char *endfile_spec = ENDFILE_SPEC;
1066 static const char *startfile_spec = STARTFILE_SPEC;
1067 static const char *linker_name_spec = LINKER_NAME;
1068 static const char *linker_plugin_file_spec = "";
1069 static const char *lto_wrapper_spec = "";
1070 static const char *lto_gcc_spec = "";
1071 static const char *post_link_spec = POST_LINK_SPEC;
1072 static const char *link_command_spec = LINK_COMMAND_SPEC;
1073 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
1074 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
1075 static const char *sysroot_spec = SYSROOT_SPEC;
1076 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
1077 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
1078 static const char *self_spec = "";
1080 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
1081 There should be no need to override these in target dependent files,
1082 but we need to copy them to the specs file so that newer versions
1083 of the GCC driver can correctly drive older tool chains with the
1084 appropriate -B options. */
1086 /* When cpplib handles traditional preprocessing, get rid of this, and
1087 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
1088 that we default the front end language better. */
1089 static const char *trad_capable_cpp =
1090 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}";
1092 /* We don't wrap .d files in %W{} since a missing .d file, and
1093 therefore no dependency entry, confuses make into thinking a .o
1094 file that happens to exist is up-to-date. */
1095 static const char *cpp_unique_options =
1096 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
1097 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
1098 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
1099 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
1100 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
1101 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
1102 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
1103 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
1106 /* This contains cpp options which are common with cc1_options and are passed
1107 only when preprocessing only to avoid duplication. We pass the cc1 spec
1108 options to the preprocessor so that it the cc1 spec may manipulate
1109 options used to set target flags. Those special target flags settings may
1110 in turn cause preprocessor symbols to be defined specially. */
1111 static const char *cpp_options =
1112 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
1113 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
1114 %{undef} %{save-temps*:-fpch-preprocess}";
1116 /* This contains cpp options which are not passed when the preprocessor
1117 output will be used by another program. */
1118 static const char *cpp_debug_options = "%{d*}";
1120 /* NB: This is shared amongst all front-ends, except for Ada. */
1121 static const char *cc1_options =
1122 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
1123 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
1124 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
1125 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
1126 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
1127 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
1128 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
1129 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\
1130 %{-target-help:--target-help}\
1131 %{-version:--version}\
1132 %{-help=*:--help=%*}\
1133 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
1134 %{fsyntax-only:-o %j} %{-param*}\
1135 %{coverage:-fprofile-arcs -ftest-coverage}";
1137 static const char *asm_options =
1138 "%{-target-help:%:print-asm-header()} "
1140 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
1141 to the assembler equivalents. */
1142 "%{v} %{w:-W} %{I*} "
1144 ASM_COMPRESS_DEBUG_SPEC
1145 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
1147 static const char *invoke_as =
1148 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
1150 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
1151 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
1155 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
1156 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
1160 /* Some compilers have limits on line lengths, and the multilib_select
1161 and/or multilib_matches strings can be very long, so we build them at
1163 static struct obstack multilib_obstack;
1164 static const char *multilib_select;
1165 static const char *multilib_matches;
1166 static const char *multilib_defaults;
1167 static const char *multilib_exclusions;
1168 static const char *multilib_reuse;
1170 /* Check whether a particular argument is a default argument. */
1172 #ifndef MULTILIB_DEFAULTS
1173 #define MULTILIB_DEFAULTS { "" }
1176 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
1178 #ifndef DRIVER_SELF_SPECS
1179 #define DRIVER_SELF_SPECS ""
1182 /* Linking to libgomp implies pthreads. This is particularly important
1183 for targets that use different start files and suchlike. */
1184 #ifndef GOMP_SELF_SPECS
1185 #define GOMP_SELF_SPECS \
1186 "%{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1): " \
1190 /* Likewise for -fgnu-tm. */
1191 #ifndef GTM_SELF_SPECS
1192 #define GTM_SELF_SPECS "%{fgnu-tm: -pthread}"
1195 /* Likewise for -fcilkplus. */
1196 #ifndef CILK_SELF_SPECS
1197 #define CILK_SELF_SPECS "%{fcilkplus: -pthread}"
1200 static const char *const driver_self_specs[] = {
1201 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
1202 DRIVER_SELF_SPECS, CONFIGURE_SPECS, GOMP_SELF_SPECS, GTM_SELF_SPECS,
1206 #ifndef OPTION_DEFAULT_SPECS
1207 #define OPTION_DEFAULT_SPECS { "", "" }
1216 static const struct default_spec
1217 option_default_specs[] = { OPTION_DEFAULT_SPECS };
1221 struct user_specs *next;
1222 const char *filename;
1225 static struct user_specs *user_specs_head, *user_specs_tail;
1228 /* Record the mapping from file suffixes for compilation specs. */
1232 const char *suffix; /* Use this compiler for input files
1233 whose names end in this suffix. */
1235 const char *spec; /* To use this compiler, run this spec. */
1237 const char *cpp_spec; /* If non-NULL, substitute this spec
1238 for `%C', rather than the usual
1240 const int combinable; /* If nonzero, compiler can deal with
1241 multiple source files at once (IMA). */
1242 const int needs_preprocessing; /* If nonzero, source files need to
1243 be run through a preprocessor. */
1246 /* Pointer to a vector of `struct compiler' that gives the spec for
1247 compiling a file, based on its suffix.
1248 A file that does not end in any of these suffixes will be passed
1249 unchanged to the loader and nothing else will be done to it.
1251 An entry containing two 0s is used to terminate the vector.
1253 If multiple entries match a file, the last matching one is used. */
1255 static struct compiler *compilers;
1257 /* Number of entries in `compilers', not counting the null terminator. */
1259 static int n_compilers;
1261 /* The default list of file name suffixes and their compilation specs. */
1263 static const struct compiler default_compilers[] =
1265 /* Add lists of suffixes of known languages here. If those languages
1266 were not present when we built the driver, we will hit these copies
1267 and be given a more meaningful error than "file not used since
1268 linking is not done". */
1269 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
1270 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
1271 {".mii", "#Objective-C++", 0, 0, 0},
1272 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
1273 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
1274 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
1275 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
1276 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
1277 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
1278 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
1279 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
1280 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
1281 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
1282 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
1283 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
1284 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
1285 {".r", "#Ratfor", 0, 0, 0},
1286 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
1287 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
1288 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
1289 {".go", "#Go", 0, 1, 0},
1290 /* Next come the entries for C. */
1291 {".c", "@c", 0, 0, 1},
1293 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1294 external preprocessor if -save-temps is given. */
1295 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1298 %eGNU C no longer supports -traditional without -E}\
1299 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1300 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1301 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1303 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1304 cc1 %(cpp_unique_options) %(cc1_options)}}}\
1305 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
1307 "%{!E:%e-E or -x required when input is from standard input}\
1308 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
1309 {".h", "@c-header", 0, 0, 0},
1311 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1312 external preprocessor if -save-temps is given. */
1313 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1315 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1316 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1317 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1319 %{!fsyntax-only:-o %g.s \
1320 %{!fdump-ada-spec*:%{!o*:--output-pch=%i.gch}\
1321 %W{o*:--output-pch=%*}}%V}}\
1322 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1323 cc1 %(cpp_unique_options) %(cc1_options)\
1324 %{!fsyntax-only:-o %g.s \
1325 %{!fdump-ada-spec*:%{!o*:--output-pch=%i.gch}\
1326 %W{o*:--output-pch=%*}}%V}}}}}}}", 0, 0, 0},
1327 {".i", "@cpp-output", 0, 0, 0},
1329 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
1330 {".s", "@assembler", 0, 0, 0},
1332 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
1333 {".sx", "@assembler-with-cpp", 0, 0, 0},
1334 {".S", "@assembler-with-cpp", 0, 0, 0},
1335 {"@assembler-with-cpp",
1336 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
1337 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1338 %{E|M|MM:%(cpp_debug_options)}\
1339 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1340 as %(asm_debug) %(asm_options) %|.s %A }}}}"
1342 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1343 %{E|M|MM:%(cpp_debug_options)}\
1344 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1345 as %(asm_debug) %(asm_options) %m.s %A }}}}"
1350 /* Mark end of table. */
1354 /* Number of elements in default_compilers, not counting the terminator. */
1356 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
1358 typedef char *char_p; /* For DEF_VEC_P. */
1360 /* A vector of options to give to the linker.
1361 These options are accumulated by %x,
1362 and substituted into the linker command with %X. */
1363 static vec<char_p> linker_options;
1365 /* A vector of options to give to the assembler.
1366 These options are accumulated by -Wa,
1367 and substituted into the assembler command with %Y. */
1368 static vec<char_p> assembler_options;
1370 /* A vector of options to give to the preprocessor.
1371 These options are accumulated by -Wp,
1372 and substituted into the preprocessor command with %Z. */
1373 static vec<char_p> preprocessor_options;
1376 skip_whitespace (char *p)
1380 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1381 be considered whitespace. */
1382 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1384 else if (*p == '\n' || *p == ' ' || *p == '\t')
1398 /* Structures to keep track of prefixes to try when looking for files. */
1402 const char *prefix; /* String to prepend to the path. */
1403 struct prefix_list *next; /* Next in linked list. */
1404 int require_machine_suffix; /* Don't use without machine_suffix. */
1405 /* 2 means try both machine_suffix and just_machine_suffix. */
1406 int priority; /* Sort key - priority within list. */
1407 int os_multilib; /* 1 if OS multilib scheme should be used,
1408 0 for GCC multilib scheme. */
1413 struct prefix_list *plist; /* List of prefixes to try */
1414 int max_len; /* Max length of a prefix in PLIST */
1415 const char *name; /* Name of this list (used in config stuff) */
1418 /* List of prefixes to try when looking for executables. */
1420 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1422 /* List of prefixes to try when looking for startup (crt0) files. */
1424 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1426 /* List of prefixes to try when looking for include files. */
1428 static struct path_prefix include_prefixes = { 0, 0, "include" };
1430 /* Suffix to attach to directories searched for commands.
1431 This looks like `MACHINE/VERSION/'. */
1433 static const char *machine_suffix = 0;
1435 /* Suffix to attach to directories searched for commands.
1436 This is just `MACHINE/'. */
1438 static const char *just_machine_suffix = 0;
1440 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1442 static const char *gcc_exec_prefix;
1444 /* Adjusted value of standard_libexec_prefix. */
1446 static const char *gcc_libexec_prefix;
1448 /* Default prefixes to attach to command names. */
1450 #ifndef STANDARD_STARTFILE_PREFIX_1
1451 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1453 #ifndef STANDARD_STARTFILE_PREFIX_2
1454 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1457 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1458 #undef MD_EXEC_PREFIX
1459 #undef MD_STARTFILE_PREFIX
1460 #undef MD_STARTFILE_PREFIX_1
1463 /* If no prefixes defined, use the null string, which will disable them. */
1464 #ifndef MD_EXEC_PREFIX
1465 #define MD_EXEC_PREFIX ""
1467 #ifndef MD_STARTFILE_PREFIX
1468 #define MD_STARTFILE_PREFIX ""
1470 #ifndef MD_STARTFILE_PREFIX_1
1471 #define MD_STARTFILE_PREFIX_1 ""
1474 /* These directories are locations set at configure-time based on the
1475 --prefix option provided to configure. Their initializers are
1476 defined in Makefile.in. These paths are not *directly* used when
1477 gcc_exec_prefix is set because, in that case, we know where the
1478 compiler has been installed, and use paths relative to that
1479 location instead. */
1480 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1481 static const char *const standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1482 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1483 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1485 /* For native compilers, these are well-known paths containing
1486 components that may be provided by the system. For cross
1487 compilers, these paths are not used. */
1488 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1489 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1490 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1491 static const char *const standard_startfile_prefix_1
1492 = STANDARD_STARTFILE_PREFIX_1;
1493 static const char *const standard_startfile_prefix_2
1494 = STANDARD_STARTFILE_PREFIX_2;
1496 /* A relative path to be used in finding the location of tools
1497 relative to the driver. */
1498 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1500 /* A prefix to be used when this is an accelerator compiler. */
1501 static const char *const accel_dir_suffix = ACCEL_DIR_SUFFIX;
1503 /* Subdirectory to use for locating libraries. Set by
1504 set_multilib_dir based on the compilation options. */
1506 static const char *multilib_dir;
1508 /* Subdirectory to use for locating libraries in OS conventions. Set by
1509 set_multilib_dir based on the compilation options. */
1511 static const char *multilib_os_dir;
1513 /* Subdirectory to use for locating libraries in multiarch conventions. Set by
1514 set_multilib_dir based on the compilation options. */
1516 static const char *multiarch_dir;
1518 /* Structure to keep track of the specs that have been defined so far.
1519 These are accessed using %(specname) in a compiler or link
1524 /* The following 2 fields must be first */
1525 /* to allow EXTRA_SPECS to be initialized */
1526 const char *name; /* name of the spec. */
1527 const char *ptr; /* available ptr if no static pointer */
1529 /* The following fields are not initialized */
1530 /* by EXTRA_SPECS */
1531 const char **ptr_spec; /* pointer to the spec itself. */
1532 struct spec_list *next; /* Next spec in linked list. */
1533 int name_len; /* length of the name */
1534 bool user_p; /* whether string come from file spec. */
1535 bool alloc_p; /* whether string was allocated */
1536 const char *default_ptr; /* The default value of *ptr_spec. */
1539 #define INIT_STATIC_SPEC(NAME,PTR) \
1540 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, false, false, \
1543 /* List of statically defined specs. */
1544 static struct spec_list static_specs[] =
1546 INIT_STATIC_SPEC ("asm", &asm_spec),
1547 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1548 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1549 INIT_STATIC_SPEC ("asm_options", &asm_options),
1550 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1551 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1552 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1553 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1554 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1555 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1556 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1557 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1558 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1559 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1560 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec),
1561 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1562 INIT_STATIC_SPEC ("link", &link_spec),
1563 INIT_STATIC_SPEC ("lib", &lib_spec),
1564 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec),
1565 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1566 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1567 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1568 INIT_STATIC_SPEC ("version", &compiler_version),
1569 INIT_STATIC_SPEC ("multilib", &multilib_select),
1570 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1571 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1572 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1573 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1574 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1575 INIT_STATIC_SPEC ("multilib_reuse", &multilib_reuse),
1576 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1577 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec),
1578 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec),
1579 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec),
1580 INIT_STATIC_SPEC ("post_link", &post_link_spec),
1581 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1582 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1583 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1584 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1585 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1586 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec),
1587 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1588 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1589 INIT_STATIC_SPEC ("self_spec", &self_spec),
1592 #ifdef EXTRA_SPECS /* additional specs needed */
1593 /* Structure to keep track of just the first two args of a spec_list.
1594 That is all that the EXTRA_SPECS macro gives us. */
1597 const char *const name;
1598 const char *const ptr;
1601 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1602 static struct spec_list *extra_specs = (struct spec_list *) 0;
1605 /* List of dynamically allocates specs that have been defined so far. */
1607 static struct spec_list *specs = (struct spec_list *) 0;
1609 /* List of static spec functions. */
1611 static const struct spec_function static_spec_functions[] =
1613 { "getenv", getenv_spec_function },
1614 { "if-exists", if_exists_spec_function },
1615 { "if-exists-else", if_exists_else_spec_function },
1616 { "sanitize", sanitize_spec_function },
1617 { "replace-outfile", replace_outfile_spec_function },
1618 { "remove-outfile", remove_outfile_spec_function },
1619 { "version-compare", version_compare_spec_function },
1620 { "include", include_spec_function },
1621 { "find-file", find_file_spec_function },
1622 { "find-plugindir", find_plugindir_spec_function },
1623 { "print-asm-header", print_asm_header_spec_function },
1624 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function },
1625 { "compare-debug-self-opt", compare_debug_self_opt_spec_function },
1626 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function },
1627 { "pass-through-libs", pass_through_libs_spec_func },
1628 { "replace-extension", replace_extension_spec_func },
1629 { "gt", greater_than_spec_func },
1630 #ifdef EXTRA_SPEC_FUNCTIONS
1631 EXTRA_SPEC_FUNCTIONS
1636 static int processing_spec_function;
1638 /* Add appropriate libgcc specs to OBSTACK, taking into account
1639 various permutations of -shared-libgcc, -shared, and such. */
1641 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1643 #ifndef USE_LD_AS_NEEDED
1644 #define USE_LD_AS_NEEDED 0
1648 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1649 const char *static_name, const char *eh_name)
1653 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}"
1654 "%{!static:%{!static-libgcc:"
1655 #if USE_LD_AS_NEEDED
1656 "%{!shared-libgcc:",
1657 static_name, " " LD_AS_NEEDED_OPTION " ",
1658 shared_name, " " LD_NO_AS_NEEDED_OPTION
1661 shared_name, "%{!shared: ", static_name, "}"
1665 "%{!shared-libgcc:", static_name, " ", eh_name, "}"
1666 "%{shared-libgcc:", shared_name, " ", static_name, "}"
1670 "%{shared-libgcc:", shared_name, "}"
1671 "%{!shared-libgcc:", static_name, "}"
1674 "%{shared:", shared_name, "}"
1679 obstack_grow (obstack, buf, strlen (buf));
1682 #endif /* ENABLE_SHARED_LIBGCC */
1684 /* Initialize the specs lookup routines. */
1689 struct spec_list *next = (struct spec_list *) 0;
1690 struct spec_list *sl = (struct spec_list *) 0;
1694 return; /* Already initialized. */
1697 fnotice (stderr, "Using built-in specs.\n");
1700 extra_specs = XCNEWVEC (struct spec_list, ARRAY_SIZE (extra_specs_1));
1702 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1704 sl = &extra_specs[i];
1705 sl->name = extra_specs_1[i].name;
1706 sl->ptr = extra_specs_1[i].ptr;
1708 sl->name_len = strlen (sl->name);
1709 sl->ptr_spec = &sl->ptr;
1710 gcc_assert (sl->ptr_spec != NULL);
1711 sl->default_ptr = sl->ptr;
1716 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1718 sl = &static_specs[i];
1723 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1724 /* ??? If neither -shared-libgcc nor --static-libgcc was
1725 seen, then we should be making an educated guess. Some proposed
1726 heuristics for ELF include:
1728 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1729 program will be doing dynamic loading, which will likely
1730 need the shared libgcc.
1732 (2) If "-ldl", then it's also a fair bet that we're doing
1735 (3) For each ET_DYN we're linking against (either through -lfoo
1736 or /some/path/foo.so), check to see whether it or one of
1737 its dependencies depends on a shared libgcc.
1741 If the runtime is fixed to look for program headers instead
1742 of calling __register_frame_info at all, for each object,
1743 use the shared libgcc if any EH symbol referenced.
1745 If crtstuff is fixed to not invoke __register_frame_info
1746 automatically, for each object, use the shared libgcc if
1747 any non-empty unwind section found.
1749 Doing any of this probably requires invoking an external program to
1750 do the actual object file scanning. */
1752 const char *p = libgcc_spec;
1755 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1756 when given the proper command line arguments. */
1759 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1761 init_gcc_specs (&obstack,
1763 #ifdef USE_LIBUNWIND_EXCEPTIONS
1769 #ifdef USE_LIBUNWIND_EXCEPTIONS
1770 # ifdef HAVE_LD_STATIC_DYNAMIC
1771 " %{!static:" LD_STATIC_OPTION "} -lunwind"
1772 " %{!static:" LD_DYNAMIC_OPTION "}"
1782 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1784 /* Ug. We don't know shared library extensions. Hope that
1785 systems that use this form don't do shared libraries. */
1786 init_gcc_specs (&obstack,
1790 #ifdef USE_LIBUNWIND_EXCEPTIONS
1799 obstack_1grow (&obstack, *p);
1800 in_sep = (*p == ' ');
1805 obstack_1grow (&obstack, '\0');
1806 libgcc_spec = XOBFINISH (&obstack, const char *);
1809 #ifdef USE_AS_TRADITIONAL_FORMAT
1810 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1812 static const char tf[] = "--traditional-format ";
1813 obstack_grow (&obstack, tf, sizeof (tf) - 1);
1814 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1815 asm_spec = XOBFINISH (&obstack, const char *);
1819 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \
1820 defined LINKER_HASH_STYLE
1821 # ifdef LINK_BUILDID_SPEC
1822 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1823 obstack_grow (&obstack, LINK_BUILDID_SPEC, sizeof (LINK_BUILDID_SPEC) - 1);
1825 # ifdef LINK_EH_SPEC
1826 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1827 obstack_grow (&obstack, LINK_EH_SPEC, sizeof (LINK_EH_SPEC) - 1);
1829 # ifdef LINKER_HASH_STYLE
1830 /* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had
1833 static const char hash_style[] = "--hash-style=";
1834 obstack_grow (&obstack, hash_style, sizeof (hash_style) - 1);
1835 obstack_grow (&obstack, LINKER_HASH_STYLE, sizeof (LINKER_HASH_STYLE) - 1);
1836 obstack_1grow (&obstack, ' ');
1839 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1840 link_spec = XOBFINISH (&obstack, const char *);
1846 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1847 removed; If the spec starts with a + then SPEC is added to the end of the
1851 set_spec (const char *name, const char *spec, bool user_p)
1853 struct spec_list *sl;
1854 const char *old_spec;
1855 int name_len = strlen (name);
1858 /* If this is the first call, initialize the statically allocated specs. */
1861 struct spec_list *next = (struct spec_list *) 0;
1862 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1864 sl = &static_specs[i];
1871 /* See if the spec already exists. */
1872 for (sl = specs; sl; sl = sl->next)
1873 if (name_len == sl->name_len && !strcmp (sl->name, name))
1878 /* Not found - make it. */
1879 sl = XNEW (struct spec_list);
1880 sl->name = xstrdup (name);
1881 sl->name_len = name_len;
1882 sl->ptr_spec = &sl->ptr;
1884 *(sl->ptr_spec) = "";
1886 sl->default_ptr = NULL;
1890 old_spec = *(sl->ptr_spec);
1891 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1892 ? concat (old_spec, spec + 1, NULL)
1897 fnotice (stderr, "Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1900 /* Free the old spec. */
1901 if (old_spec && sl->alloc_p)
1902 free (CONST_CAST (char *, old_spec));
1904 sl->user_p = user_p;
1908 /* Accumulate a command (program name and args), and run it. */
1910 typedef const char *const_char_p; /* For DEF_VEC_P. */
1912 /* Vector of pointers to arguments in the current line of specifications. */
1914 static vec<const_char_p> argbuf;
1916 /* Were the options -c, -S or -E passed. */
1917 static int have_c = 0;
1919 /* Was the option -o passed. */
1920 static int have_o = 0;
1922 /* Was the option -E passed. */
1923 static int have_E = 0;
1925 /* Pointer to output file name passed in with -o. */
1926 static const char *output_file = 0;
1928 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1929 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1932 static struct temp_name {
1933 const char *suffix; /* suffix associated with the code. */
1934 int length; /* strlen (suffix). */
1935 int unique; /* Indicates whether %g or %u/%U was used. */
1936 const char *filename; /* associated filename. */
1937 int filename_length; /* strlen (filename). */
1938 struct temp_name *next;
1941 /* Number of commands executed so far. */
1943 static int execution_count;
1945 /* Number of commands that exited with a signal. */
1947 static int signal_count;
1949 /* Allocate the argument vector. */
1957 /* Clear out the vector of arguments (after a command is executed). */
1962 argbuf.truncate (0);
1965 /* Add one argument to the vector at the end.
1966 This is done when a space is seen or at the end of the line.
1967 If DELETE_ALWAYS is nonzero, the arg is a filename
1968 and the file should be deleted eventually.
1969 If DELETE_FAILURE is nonzero, the arg is a filename
1970 and the file should be deleted if this compilation fails. */
1973 store_arg (const char *arg, int delete_always, int delete_failure)
1975 argbuf.safe_push (arg);
1977 if (delete_always || delete_failure)
1980 /* If the temporary file we should delete is specified as
1981 part of a joined argument extract the filename. */
1983 && (p = strrchr (arg, '=')))
1985 record_temp_file (arg, delete_always, delete_failure);
1989 /* Load specs from a file name named FILENAME, replacing occurrences of
1990 various different types of line-endings, \r\n, \n\r and just \r, with
1994 load_specs (const char *filename)
1998 struct stat statbuf;
2005 fnotice (stderr, "Reading specs from %s\n", filename);
2007 /* Open and stat the file. */
2008 desc = open (filename, O_RDONLY, 0);
2010 pfatal_with_name (filename);
2011 if (stat (filename, &statbuf) < 0)
2012 pfatal_with_name (filename);
2014 /* Read contents of file into BUFFER. */
2015 buffer = XNEWVEC (char, statbuf.st_size + 1);
2016 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
2018 pfatal_with_name (filename);
2019 buffer[readlen] = 0;
2022 specs = XNEWVEC (char, readlen + 1);
2024 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
2030 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
2032 else if (*(buffer_p + 1) == '\n') /* \r\n */
2046 /* Read compilation specs from a file named FILENAME,
2047 replacing the default ones.
2049 A suffix which starts with `*' is a definition for
2050 one of the machine-specific sub-specs. The "suffix" should be
2051 *asm, *cc1, *cpp, *link, *startfile, etc.
2052 The corresponding spec is stored in asm_spec, etc.,
2053 rather than in the `compilers' vector.
2055 Anything invalid in the file is a fatal error. */
2058 read_specs (const char *filename, bool main_p, bool user_p)
2063 buffer = load_specs (filename);
2065 /* Scan BUFFER for specs, putting them in the vector. */
2071 char *in, *out, *p1, *p2, *p3;
2073 /* Advance P in BUFFER to the next nonblank nocomment line. */
2074 p = skip_whitespace (p);
2078 /* Is this a special command that starts with '%'? */
2079 /* Don't allow this for the main specs file, since it would
2080 encourage people to overwrite it. */
2081 if (*p == '%' && !main_p)
2084 while (*p && *p != '\n')
2090 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
2091 && (p1[sizeof "%include" - 1] == ' '
2092 || p1[sizeof "%include" - 1] == '\t'))
2096 p1 += sizeof ("%include");
2097 while (*p1 == ' ' || *p1 == '\t')
2100 if (*p1++ != '<' || p[-2] != '>')
2101 fatal_error (input_location,
2102 "specs %%include syntax malformed after "
2104 (long) (p1 - buffer + 1));
2107 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
2108 read_specs (new_filename ? new_filename : p1, false, user_p);
2111 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
2112 && (p1[sizeof "%include_noerr" - 1] == ' '
2113 || p1[sizeof "%include_noerr" - 1] == '\t'))
2117 p1 += sizeof "%include_noerr";
2118 while (*p1 == ' ' || *p1 == '\t')
2121 if (*p1++ != '<' || p[-2] != '>')
2122 fatal_error (input_location,
2123 "specs %%include syntax malformed after "
2125 (long) (p1 - buffer + 1));
2128 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
2130 read_specs (new_filename, false, user_p);
2131 else if (verbose_flag)
2132 fnotice (stderr, "could not find specs file %s\n", p1);
2135 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
2136 && (p1[sizeof "%rename" - 1] == ' '
2137 || p1[sizeof "%rename" - 1] == '\t'))
2140 struct spec_list *sl;
2141 struct spec_list *newsl;
2143 /* Get original name. */
2144 p1 += sizeof "%rename";
2145 while (*p1 == ' ' || *p1 == '\t')
2148 if (! ISALPHA ((unsigned char) *p1))
2149 fatal_error (input_location,
2150 "specs %%rename syntax malformed after "
2152 (long) (p1 - buffer));
2155 while (*p2 && !ISSPACE ((unsigned char) *p2))
2158 if (*p2 != ' ' && *p2 != '\t')
2159 fatal_error (input_location,
2160 "specs %%rename syntax malformed after "
2162 (long) (p2 - buffer));
2166 while (*p2 == ' ' || *p2 == '\t')
2169 if (! ISALPHA ((unsigned char) *p2))
2170 fatal_error (input_location,
2171 "specs %%rename syntax malformed after "
2173 (long) (p2 - buffer));
2175 /* Get new spec name. */
2177 while (*p3 && !ISSPACE ((unsigned char) *p3))
2181 fatal_error (input_location,
2182 "specs %%rename syntax malformed after "
2184 (long) (p3 - buffer));
2187 for (sl = specs; sl; sl = sl->next)
2188 if (name_len == sl->name_len && !strcmp (sl->name, p1))
2192 fatal_error (input_location,
2193 "specs %s spec was not found to be renamed", p1);
2195 if (strcmp (p1, p2) == 0)
2198 for (newsl = specs; newsl; newsl = newsl->next)
2199 if (strcmp (newsl->name, p2) == 0)
2200 fatal_error (input_location,
2201 "%s: attempt to rename spec %qs to "
2202 "already defined spec %qs",
2207 fnotice (stderr, "rename spec %s to %s\n", p1, p2);
2209 fnotice (stderr, "spec is '%s'\n\n", *(sl->ptr_spec));
2213 set_spec (p2, *(sl->ptr_spec), user_p);
2215 free (CONST_CAST (char *, *(sl->ptr_spec)));
2217 *(sl->ptr_spec) = "";
2222 fatal_error (input_location,
2223 "specs unknown %% command after %ld characters",
2224 (long) (p1 - buffer));
2227 /* Find the colon that should end the suffix. */
2229 while (*p1 && *p1 != ':' && *p1 != '\n')
2232 /* The colon shouldn't be missing. */
2234 fatal_error (input_location,
2235 "specs file malformed after %ld characters",
2236 (long) (p1 - buffer));
2238 /* Skip back over trailing whitespace. */
2240 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
2243 /* Copy the suffix to a string. */
2244 suffix = save_string (p, p2 - p);
2245 /* Find the next line. */
2246 p = skip_whitespace (p1 + 1);
2248 fatal_error (input_location,
2249 "specs file malformed after %ld characters",
2250 (long) (p - buffer));
2253 /* Find next blank line or end of string. */
2254 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
2257 /* Specs end at the blank line and do not include the newline. */
2258 spec = save_string (p, p1 - p);
2261 /* Delete backslash-newline sequences from the spec. */
2266 if (in[0] == '\\' && in[1] == '\n')
2268 else if (in[0] == '#')
2269 while (*in && *in != '\n')
2277 if (suffix[0] == '*')
2279 if (! strcmp (suffix, "*link_command"))
2280 link_command_spec = spec;
2283 set_spec (suffix + 1, spec, user_p);
2289 /* Add this pair to the vector. */
2291 = XRESIZEVEC (struct compiler, compilers, n_compilers + 2);
2293 compilers[n_compilers].suffix = suffix;
2294 compilers[n_compilers].spec = spec;
2296 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2300 link_command_spec = spec;
2303 if (link_command_spec == 0)
2304 fatal_error (input_location, "spec file has no spec for linking");
2306 XDELETEVEC (buffer);
2309 /* Record the names of temporary files we tell compilers to write,
2310 and delete them at the end of the run. */
2312 /* This is the common prefix we use to make temp file names.
2313 It is chosen once for each run of this program.
2314 It is substituted into a spec by %g or %j.
2315 Thus, all temp file names contain this prefix.
2316 In practice, all temp file names start with this prefix.
2318 This prefix comes from the envvar TMPDIR if it is defined;
2319 otherwise, from the P_tmpdir macro if that is defined;
2320 otherwise, in /usr/tmp or /tmp;
2321 or finally the current directory if all else fails. */
2323 static const char *temp_filename;
2325 /* Length of the prefix. */
2327 static int temp_filename_length;
2329 /* Define the list of temporary files to delete. */
2334 struct temp_file *next;
2337 /* Queue of files to delete on success or failure of compilation. */
2338 static struct temp_file *always_delete_queue;
2339 /* Queue of files to delete on failure of compilation. */
2340 static struct temp_file *failure_delete_queue;
2342 /* Record FILENAME as a file to be deleted automatically.
2343 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2344 otherwise delete it in any case.
2345 FAIL_DELETE nonzero means delete it if a compilation step fails;
2346 otherwise delete it in any case. */
2349 record_temp_file (const char *filename, int always_delete, int fail_delete)
2351 char *const name = xstrdup (filename);
2355 struct temp_file *temp;
2356 for (temp = always_delete_queue; temp; temp = temp->next)
2357 if (! filename_cmp (name, temp->name))
2363 temp = XNEW (struct temp_file);
2364 temp->next = always_delete_queue;
2366 always_delete_queue = temp;
2373 struct temp_file *temp;
2374 for (temp = failure_delete_queue; temp; temp = temp->next)
2375 if (! filename_cmp (name, temp->name))
2381 temp = XNEW (struct temp_file);
2382 temp->next = failure_delete_queue;
2384 failure_delete_queue = temp;
2390 /* Delete all the temporary files whose names we previously recorded. */
2392 #ifndef DELETE_IF_ORDINARY
2393 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2396 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2397 if (unlink (NAME) < 0) \
2399 perror_with_name (NAME); \
2404 delete_if_ordinary (const char *name)
2410 printf ("Delete %s? (y or n) ", name);
2414 while ((c = getchar ()) != '\n' && c != EOF)
2417 if (i == 'y' || i == 'Y')
2419 DELETE_IF_ORDINARY (name, st, verbose_flag);
2423 delete_temp_files (void)
2425 struct temp_file *temp;
2427 for (temp = always_delete_queue; temp; temp = temp->next)
2428 delete_if_ordinary (temp->name);
2429 always_delete_queue = 0;
2432 /* Delete all the files to be deleted on error. */
2435 delete_failure_queue (void)
2437 struct temp_file *temp;
2439 for (temp = failure_delete_queue; temp; temp = temp->next)
2440 delete_if_ordinary (temp->name);
2444 clear_failure_queue (void)
2446 failure_delete_queue = 0;
2449 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2451 If DO_MULTI is true iterate over the paths twice, first with multilib
2452 suffix then without, otherwise iterate over the paths once without
2453 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2454 to avoid visiting the same path twice, but we could do better. For
2455 instance, /usr/lib/../lib is considered different from /usr/lib.
2456 At least EXTRA_SPACE chars past the end of the path passed to
2457 CALLBACK are available for use by the callback.
2458 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2460 Returns the value returned by CALLBACK. */
2463 for_each_path (const struct path_prefix *paths,
2466 void *(*callback) (char *, void *),
2467 void *callback_info)
2469 struct prefix_list *pl;
2470 const char *multi_dir = NULL;
2471 const char *multi_os_dir = NULL;
2472 const char *multiarch_suffix = NULL;
2473 const char *multi_suffix;
2474 const char *just_multi_suffix;
2477 bool skip_multi_dir = false;
2478 bool skip_multi_os_dir = false;
2480 multi_suffix = machine_suffix;
2481 just_multi_suffix = just_machine_suffix;
2482 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0)
2484 multi_dir = concat (multilib_dir, dir_separator_str, NULL);
2485 multi_suffix = concat (multi_suffix, multi_dir, NULL);
2486 just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL);
2488 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0)
2489 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL);
2491 multiarch_suffix = concat (multiarch_dir, dir_separator_str, NULL);
2495 size_t multi_dir_len = 0;
2496 size_t multi_os_dir_len = 0;
2497 size_t multiarch_len = 0;
2499 size_t just_suffix_len;
2503 multi_dir_len = strlen (multi_dir);
2505 multi_os_dir_len = strlen (multi_os_dir);
2506 if (multiarch_suffix)
2507 multiarch_len = strlen (multiarch_suffix);
2508 suffix_len = strlen (multi_suffix);
2509 just_suffix_len = strlen (just_multi_suffix);
2513 len = paths->max_len + extra_space + 1;
2514 len += MAX (MAX (suffix_len, multi_os_dir_len), multiarch_len);
2515 path = XNEWVEC (char, len);
2518 for (pl = paths->plist; pl != 0; pl = pl->next)
2520 len = strlen (pl->prefix);
2521 memcpy (path, pl->prefix, len);
2523 /* Look first in MACHINE/VERSION subdirectory. */
2524 if (!skip_multi_dir)
2526 memcpy (path + len, multi_suffix, suffix_len + 1);
2527 ret = callback (path, callback_info);
2532 /* Some paths are tried with just the machine (ie. target)
2533 subdir. This is used for finding as, ld, etc. */
2535 && pl->require_machine_suffix == 2)
2537 memcpy (path + len, just_multi_suffix, just_suffix_len + 1);
2538 ret = callback (path, callback_info);
2543 /* Now try the multiarch path. */
2545 && !pl->require_machine_suffix && multiarch_dir)
2547 memcpy (path + len, multiarch_suffix, multiarch_len + 1);
2548 ret = callback (path, callback_info);
2553 /* Now try the base path. */
2554 if (!pl->require_machine_suffix
2555 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir))
2557 const char *this_multi;
2558 size_t this_multi_len;
2560 if (pl->os_multilib)
2562 this_multi = multi_os_dir;
2563 this_multi_len = multi_os_dir_len;
2567 this_multi = multi_dir;
2568 this_multi_len = multi_dir_len;
2572 memcpy (path + len, this_multi, this_multi_len + 1);
2576 ret = callback (path, callback_info);
2584 if (multi_dir == NULL && multi_os_dir == NULL)
2587 /* Run through the paths again, this time without multilibs.
2588 Don't repeat any we have already seen. */
2591 free (CONST_CAST (char *, multi_dir));
2593 free (CONST_CAST (char *, multi_suffix));
2594 multi_suffix = machine_suffix;
2595 free (CONST_CAST (char *, just_multi_suffix));
2596 just_multi_suffix = just_machine_suffix;
2599 skip_multi_dir = true;
2602 free (CONST_CAST (char *, multi_os_dir));
2603 multi_os_dir = NULL;
2606 skip_multi_os_dir = true;
2611 free (CONST_CAST (char *, multi_dir));
2612 free (CONST_CAST (char *, multi_suffix));
2613 free (CONST_CAST (char *, just_multi_suffix));
2616 free (CONST_CAST (char *, multi_os_dir));
2622 /* Callback for build_search_list. Adds path to obstack being built. */
2624 struct add_to_obstack_info {
2631 add_to_obstack (char *path, void *data)
2633 struct add_to_obstack_info *info = (struct add_to_obstack_info *) data;
2635 if (info->check_dir && !is_directory (path, false))
2638 if (!info->first_time)
2639 obstack_1grow (info->ob, PATH_SEPARATOR);
2641 obstack_grow (info->ob, path, strlen (path));
2643 info->first_time = false;
2647 /* Add or change the value of an environment variable, outputting the
2648 change to standard error if in verbose mode. */
2650 xputenv (const char *string)
2655 /* Build a list of search directories from PATHS.
2656 PREFIX is a string to prepend to the list.
2657 If CHECK_DIR_P is true we ensure the directory exists.
2658 If DO_MULTI is true, multilib paths are output first, then
2660 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2661 It is also used by the --print-search-dirs flag. */
2664 build_search_list (const struct path_prefix *paths, const char *prefix,
2665 bool check_dir, bool do_multi)
2667 struct add_to_obstack_info info;
2669 info.ob = &collect_obstack;
2670 info.check_dir = check_dir;
2671 info.first_time = true;
2673 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2674 obstack_1grow (&collect_obstack, '=');
2676 for_each_path (paths, do_multi, 0, add_to_obstack, &info);
2678 obstack_1grow (&collect_obstack, '\0');
2679 return XOBFINISH (&collect_obstack, char *);
2682 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2686 putenv_from_prefixes (const struct path_prefix *paths, const char *env_var,
2689 xputenv (build_search_list (paths, env_var, true, do_multi));
2692 /* Check whether NAME can be accessed in MODE. This is like access,
2693 except that it never considers directories to be executable. */
2696 access_check (const char *name, int mode)
2702 if (stat (name, &st) < 0
2703 || S_ISDIR (st.st_mode))
2707 return access (name, mode);
2710 /* Callback for find_a_file. Appends the file name to the directory
2711 path. If the resulting file exists in the right mode, return the
2712 full pathname to the file. */
2714 struct file_at_path_info {
2723 file_at_path (char *path, void *data)
2725 struct file_at_path_info *info = (struct file_at_path_info *) data;
2726 size_t len = strlen (path);
2728 memcpy (path + len, info->name, info->name_len);
2729 len += info->name_len;
2731 /* Some systems have a suffix for executable files.
2732 So try appending that first. */
2733 if (info->suffix_len)
2735 memcpy (path + len, info->suffix, info->suffix_len + 1);
2736 if (access_check (path, info->mode) == 0)
2741 if (access_check (path, info->mode) == 0)
2747 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2748 access to check permissions. If DO_MULTI is true, search multilib
2749 paths then non-multilib paths, otherwise do not search multilib paths.
2750 Return 0 if not found, otherwise return its name, allocated with malloc. */
2753 find_a_file (const struct path_prefix *pprefix, const char *name, int mode,
2756 struct file_at_path_info info;
2758 #ifdef DEFAULT_ASSEMBLER
2759 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2760 return xstrdup (DEFAULT_ASSEMBLER);
2763 #ifdef DEFAULT_LINKER
2764 if (! strcmp (name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2765 return xstrdup (DEFAULT_LINKER);
2768 /* Determine the filename to execute (special case for absolute paths). */
2770 if (IS_ABSOLUTE_PATH (name))
2772 if (access (name, mode) == 0)
2773 return xstrdup (name);
2779 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "";
2780 info.name_len = strlen (info.name);
2781 info.suffix_len = strlen (info.suffix);
2784 return (char*) for_each_path (pprefix, do_multi,
2785 info.name_len + info.suffix_len,
2786 file_at_path, &info);
2789 /* Ranking of prefixes in the sort list. -B prefixes are put before
2792 enum path_prefix_priority
2794 PREFIX_PRIORITY_B_OPT,
2795 PREFIX_PRIORITY_LAST
2798 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2799 order according to PRIORITY. Within each PRIORITY, new entries are
2802 If WARN is nonzero, we will warn if no file is found
2803 through this prefix. WARN should point to an int
2804 which will be set to 1 if this entry is used.
2806 COMPONENT is the value to be passed to update_path.
2808 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2809 the complete value of machine_suffix.
2810 2 means try both machine_suffix and just_machine_suffix. */
2813 add_prefix (struct path_prefix *pprefix, const char *prefix,
2814 const char *component, /* enum prefix_priority */ int priority,
2815 int require_machine_suffix, int os_multilib)
2817 struct prefix_list *pl, **prev;
2820 for (prev = &pprefix->plist;
2821 (*prev) != NULL && (*prev)->priority <= priority;
2822 prev = &(*prev)->next)
2825 /* Keep track of the longest prefix. */
2827 prefix = update_path (prefix, component);
2828 len = strlen (prefix);
2829 if (len > pprefix->max_len)
2830 pprefix->max_len = len;
2832 pl = XNEW (struct prefix_list);
2833 pl->prefix = prefix;
2834 pl->require_machine_suffix = require_machine_suffix;
2835 pl->priority = priority;
2836 pl->os_multilib = os_multilib;
2838 /* Insert after PREV. */
2843 /* Same as add_prefix, but prepending target_system_root to prefix. */
2844 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2846 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2847 const char *component,
2848 /* enum prefix_priority */ int priority,
2849 int require_machine_suffix, int os_multilib)
2851 if (!IS_ABSOLUTE_PATH (prefix))
2852 fatal_error (input_location, "system path %qs is not absolute", prefix);
2854 if (target_system_root)
2856 char *sysroot_no_trailing_dir_separator = xstrdup (target_system_root);
2857 size_t sysroot_len = strlen (target_system_root);
2860 && target_system_root[sysroot_len - 1] == DIR_SEPARATOR)
2861 sysroot_no_trailing_dir_separator[sysroot_len - 1] = '\0';
2863 if (target_sysroot_suffix)
2864 prefix = concat (sysroot_no_trailing_dir_separator,
2865 target_sysroot_suffix, prefix, NULL);
2867 prefix = concat (sysroot_no_trailing_dir_separator, prefix, NULL);
2869 free (sysroot_no_trailing_dir_separator);
2871 /* We have to override this because GCC's notion of sysroot
2872 moves along with GCC. */
2876 add_prefix (pprefix, prefix, component, priority,
2877 require_machine_suffix, os_multilib);
2880 /* Execute the command specified by the arguments on the current line of spec.
2881 When using pipes, this includes several piped-together commands
2882 with `|' between them.
2884 Return 0 if successful, -1 if failed. */
2890 int n_commands; /* # of command. */
2892 struct pex_obj *pex;
2895 const char *prog; /* program name. */
2896 const char **argv; /* vector of args. */
2900 struct command *commands; /* each command buffer with above info. */
2902 gcc_assert (!processing_spec_function);
2906 string = find_a_file (&exec_prefixes,
2907 argbuf[0], X_OK, false);
2910 insert_wrapper (wrapper_string);
2913 /* Count # of piped commands. */
2914 for (n_commands = 1, i = 0; argbuf.iterate (i, &arg); i++)
2915 if (strcmp (arg, "|") == 0)
2918 /* Get storage for each command. */
2919 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2921 /* Split argbuf into its separate piped processes,
2922 and record info about each one.
2923 Also search for the programs that are to be run. */
2925 argbuf.safe_push (0);
2927 commands[0].prog = argbuf[0]; /* first command. */
2928 commands[0].argv = argbuf.address ();
2930 if (!wrapper_string)
2932 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false);
2933 commands[0].argv[0] = (string) ? string : commands[0].argv[0];
2936 for (n_commands = 1, i = 0; argbuf.iterate (i, &arg); i++)
2937 if (arg && strcmp (arg, "|") == 0)
2938 { /* each command. */
2939 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2940 fatal_error (input_location, "-pipe not supported");
2942 argbuf[i] = 0; /* Termination of
2944 commands[n_commands].prog = argbuf[i + 1];
2945 commands[n_commands].argv
2946 = &(argbuf.address ())[i + 1];
2947 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2950 commands[n_commands].argv[0] = string;
2954 /* If -v, print what we are about to do, and maybe query. */
2958 /* For help listings, put a blank line between sub-processes. */
2959 if (print_help_list)
2960 fputc ('\n', stderr);
2962 /* Print each piped command as a separate line. */
2963 for (i = 0; i < n_commands; i++)
2965 const char *const *j;
2967 if (verbose_only_flag)
2969 for (j = commands[i].argv; *j; j++)
2972 for (p = *j; *p; ++p)
2973 if (!ISALNUM ((unsigned char) *p)
2974 && *p != '_' && *p != '/' && *p != '-' && *p != '.')
2978 fprintf (stderr, " \"");
2979 for (p = *j; *p; ++p)
2981 if (*p == '"' || *p == '\\' || *p == '$')
2982 fputc ('\\', stderr);
2985 fputc ('"', stderr);
2987 /* If it's empty, print "". */
2989 fprintf (stderr, " \"\"");
2991 fprintf (stderr, " %s", *j);
2995 for (j = commands[i].argv; *j; j++)
2996 /* If it's empty, print "". */
2998 fprintf (stderr, " \"\"");
3000 fprintf (stderr, " %s", *j);
3002 /* Print a pipe symbol after all but the last command. */
3003 if (i + 1 != n_commands)
3004 fprintf (stderr, " |");
3005 fprintf (stderr, "\n");
3008 if (verbose_only_flag != 0)
3010 /* verbose_only_flag should act as if the spec was
3011 executed, so increment execution_count before
3012 returning. This prevents spurious warnings about
3013 unused linker input files, etc. */
3018 fnotice (stderr, "\nGo ahead? (y or n) ");
3022 while (getchar () != '\n')
3025 if (i != 'y' && i != 'Y')
3030 #ifdef ENABLE_VALGRIND_CHECKING
3031 /* Run the each command through valgrind. To simplify prepending the
3032 path to valgrind and the option "-q" (for quiet operation unless
3033 something triggers), we allocate a separate argv array. */
3035 for (i = 0; i < n_commands; i++)
3041 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
3044 argv = XALLOCAVEC (const char *, argc + 3);
3046 argv[0] = VALGRIND_PATH;
3048 for (j = 2; j < argc + 2; j++)
3049 argv[j] = commands[i].argv[j - 2];
3052 commands[i].argv = argv;
3053 commands[i].prog = argv[0];
3057 /* Run each piped subprocess. */
3059 pex = pex_init (PEX_USE_PIPES | ((report_times || report_times_to_file)
3060 ? PEX_RECORD_TIMES : 0),
3061 progname, temp_filename);
3063 fatal_error (input_location, "pex_init failed: %m");
3065 for (i = 0; i < n_commands; i++)
3069 const char *string = commands[i].argv[0];
3071 errmsg = pex_run (pex,
3072 ((i + 1 == n_commands ? PEX_LAST : 0)
3073 | (string == commands[i].prog ? PEX_SEARCH : 0)),
3074 string, CONST_CAST (char **, commands[i].argv),
3079 fatal_error (input_location, errmsg);
3083 pfatal_with_name (errmsg);
3087 if (i && string != commands[i].prog)
3088 free (CONST_CAST (char *, string));
3093 /* Wait for all the subprocesses to finish. */
3097 struct pex_time *times = NULL;
3100 statuses = (int *) alloca (n_commands * sizeof (int));
3101 if (!pex_get_status (pex, n_commands, statuses))
3102 fatal_error (input_location, "failed to get exit status: %m");
3104 if (report_times || report_times_to_file)
3106 times = (struct pex_time *) alloca (n_commands * sizeof (struct pex_time));
3107 if (!pex_get_times (pex, n_commands, times))
3108 fatal_error (input_location, "failed to get process times: %m");
3113 for (i = 0; i < n_commands; ++i)
3115 int status = statuses[i];
3117 if (WIFSIGNALED (status))
3120 /* SIGPIPE is a special case. It happens in -pipe mode
3121 when the compiler dies before the preprocessor is done,
3122 or the assembler dies before the compiler is done.
3123 There's generally been an error already, and this is
3124 just fallout. So don't generate another error unless
3125 we would otherwise have succeeded. */
3126 if (WTERMSIG (status) == SIGPIPE
3127 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
3134 internal_error_no_backtrace ("%s (program %s)",
3135 strsignal (WTERMSIG (status)),
3138 else if (WIFEXITED (status)
3139 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
3141 /* For ICEs in cc1, cc1obj, cc1plus see if it is
3142 reproducible or not. */
3145 && WEXITSTATUS (status) == ICE_EXIT_CODE
3147 && (p = strrchr (commands[0].argv[0], DIR_SEPARATOR))
3148 && ! strncmp (p + 1, "cc1", 3))
3149 try_generate_repro (commands[0].argv);
3150 if (WEXITSTATUS (status) > greatest_status)
3151 greatest_status = WEXITSTATUS (status);
3155 if (report_times || report_times_to_file)
3157 struct pex_time *pt = ×[i];
3160 ut = ((double) pt->user_seconds
3161 + (double) pt->user_microseconds / 1.0e6);
3162 st = ((double) pt->system_seconds
3163 + (double) pt->system_microseconds / 1.0e6);
3168 fnotice (stderr, "# %s %.2f %.2f\n",
3169 commands[i].prog, ut, st);
3171 if (report_times_to_file)
3174 const char *const *j;
3176 fprintf (report_times_to_file, "%g %g", ut, st);
3178 for (j = &commands[i].prog; *j; j = &commands[i].argv[++c])
3181 for (p = *j; *p; ++p)
3182 if (*p == '"' || *p == '\\' || *p == '$'
3188 fprintf (report_times_to_file, " \"");
3189 for (p = *j; *p; ++p)
3191 if (*p == '"' || *p == '\\' || *p == '$')
3192 fputc ('\\', report_times_to_file);
3193 fputc (*p, report_times_to_file);
3195 fputc ('"', report_times_to_file);
3198 fprintf (report_times_to_file, " %s", *j);
3201 fputc ('\n', report_times_to_file);
3207 if (commands[0].argv[0] != commands[0].prog)
3208 free (CONST_CAST (char *, commands[0].argv[0]));
3214 /* Find all the switches given to us
3215 and make a vector describing them.
3216 The elements of the vector are strings, one per switch given.
3217 If a switch uses following arguments, then the `part1' field
3218 is the switch itself and the `args' field
3219 is a null-terminated vector containing the following arguments.
3220 Bits in the `live_cond' field are:
3221 SWITCH_LIVE to indicate this switch is true in a conditional spec.
3222 SWITCH_FALSE to indicate this switch is overridden by a later switch.
3223 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
3224 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored.
3225 SWITCH_KEEP_FOR_GCC to indicate that this switch, otherwise ignored,
3226 should be included in COLLECT_GCC_OPTIONS.
3227 in all do_spec calls afterwards. Used for %<S from self specs.
3228 The `known' field describes whether this is an internal switch.
3229 The `validated' field describes whether any spec has looked at this switch;
3230 if it remains false at the end of the run, the switch must be meaningless.
3231 The `ordering' field is used to temporarily mark switches that have to be
3232 kept in a specific order. */
3234 #define SWITCH_LIVE (1 << 0)
3235 #define SWITCH_FALSE (1 << 1)
3236 #define SWITCH_IGNORE (1 << 2)
3237 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
3238 #define SWITCH_KEEP_FOR_GCC (1 << 4)
3244 unsigned int live_cond;
3250 static struct switchstr *switches;
3252 static int n_switches;
3254 static int n_switches_alloc;
3256 /* Set to zero if -fcompare-debug is disabled, positive if it's
3257 enabled and we're running the first compilation, negative if it's
3258 enabled and we're running the second compilation. For most of the
3259 time, it's in the range -1..1, but it can be temporarily set to 2
3260 or 3 to indicate that the -fcompare-debug flags didn't come from
3261 the command-line, but rather from the GCC_COMPARE_DEBUG environment
3262 variable, until a synthesized -fcompare-debug flag is added to the
3266 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
3267 int compare_debug_second;
3269 /* Set to the flags that should be passed to the second compilation in
3270 a -fcompare-debug compilation. */
3271 const char *compare_debug_opt;
3273 static struct switchstr *switches_debug_check[2];
3275 static int n_switches_debug_check[2];
3277 static int n_switches_alloc_debug_check[2];
3279 static char *debug_check_temp_file[2];
3281 /* Language is one of three things:
3283 1) The name of a real programming language.
3284 2) NULL, indicating that no one has figured out
3286 3) '*', indicating that the file should be passed
3291 const char *language;
3292 struct compiler *incompiler;
3297 /* Also a vector of input files specified. */
3299 static struct infile *infiles;
3303 static int n_infiles_alloc;
3305 /* True if undefined environment variables encountered during spec processing
3306 are ok to ignore, typically when we're running for --help or --version. */
3308 static bool spec_undefvar_allowed;
3310 /* True if multiple input files are being compiled to a single
3313 static bool combine_inputs;
3315 /* This counts the number of libraries added by lang_specific_driver, so that
3316 we can tell if there were any user supplied any files or libraries. */
3318 static int added_libraries;
3320 /* And a vector of corresponding output files is made up later. */
3322 const char **outfiles;
3324 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3326 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
3327 is true if we should look for an executable suffix. DO_OBJ
3328 is true if we should look for an object suffix. */
3331 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
3332 int do_obj ATTRIBUTE_UNUSED)
3334 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3342 len = strlen (name);
3344 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3345 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
3346 if (do_obj && len > 2
3347 && name[len - 2] == '.'
3348 && name[len - 1] == 'o')
3350 obstack_grow (&obstack, name, len - 2);
3351 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
3352 name = XOBFINISH (&obstack, const char *);
3356 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3357 /* If there is no filetype, make it the executable suffix (which includes
3358 the "."). But don't get confused if we have just "-o". */
3359 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
3362 for (i = len - 1; i >= 0; i--)
3363 if (IS_DIR_SEPARATOR (name[i]))
3366 for (i++; i < len; i++)
3370 obstack_grow (&obstack, name, len);
3371 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
3372 strlen (TARGET_EXECUTABLE_SUFFIX));
3373 name = XOBFINISH (&obstack, const char *);
3380 /* Display the command line switches accepted by gcc. */
3384 printf (_("Usage: %s [options] file...\n"), progname);
3385 fputs (_("Options:\n"), stdout);
3387 fputs (_(" -pass-exit-codes Exit with highest error code from a phase.\n"), stdout);
3388 fputs (_(" --help Display this information.\n"), stdout);
3389 fputs (_(" --target-help Display target specific command line options.\n"), stdout);
3390 fputs (_(" --help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumented}}[,...].\n"), stdout);
3391 fputs (_(" Display specific types of command line options.\n"), stdout);
3393 fputs (_(" (Use '-v --help' to display command line options of sub-processes).\n"), stdout);
3394 fputs (_(" --version Display compiler version information.\n"), stdout);
3395 fputs (_(" -dumpspecs Display all of the built in spec strings.\n"), stdout);
3396 fputs (_(" -dumpversion Display the version of the compiler.\n"), stdout);
3397 fputs (_(" -dumpmachine Display the compiler's target processor.\n"), stdout);
3398 fputs (_(" -print-search-dirs Display the directories in the compiler's search path.\n"), stdout);
3399 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library.\n"), stdout);
3400 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>.\n"), stdout);
3401 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>.\n"), stdout);
3403 -print-multiarch Display the target's normalized GNU triplet, used as\n\
3404 a component in the library path.\n"), stdout);
3405 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc.\n"), stdout);
3407 -print-multi-lib Display the mapping between command line options and\n\
3408 multiple library search directories.\n"), stdout);
3409 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries.\n"), stdout);
3410 fputs (_(" -print-sysroot Display the target libraries directory.\n"), stdout);
3411 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers.\n"), stdout);
3412 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler.\n"), stdout);
3413 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor.\n"), stdout);
3414 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker.\n"), stdout);
3415 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler.\n"), stdout);
3416 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor.\n"), stdout);
3417 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker.\n"), stdout);
3418 fputs (_(" -save-temps Do not delete intermediate files.\n"), stdout);
3419 fputs (_(" -save-temps=<arg> Do not delete intermediate files.\n"), stdout);
3421 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
3422 prefixes to other gcc components.\n"), stdout);
3423 fputs (_(" -pipe Use pipes rather than intermediate files.\n"), stdout);
3424 fputs (_(" -time Time the execution of each subprocess.\n"), stdout);
3425 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>.\n"), stdout);
3426 fputs (_(" -std=<standard> Assume that the input sources are for <standard>.\n"), stdout);
3428 --sysroot=<directory> Use <directory> as the root directory for headers\n\
3429 and libraries.\n"), stdout);
3430 fputs (_(" -B <directory> Add <directory> to the compiler's search paths.\n"), stdout);
3431 fputs (_(" -v Display the programs invoked by the compiler.\n"), stdout);
3432 fputs (_(" -### Like -v but options quoted and commands not executed.\n"), stdout);
3433 fputs (_(" -E Preprocess only; do not compile, assemble or link.\n"), stdout);
3434 fputs (_(" -S Compile only; do not assemble or link.\n"), stdout);
3435 fputs (_(" -c Compile and assemble, but do not link.\n"), stdout);
3436 fputs (_(" -o <file> Place the output into <file>.\n"), stdout);
3437 fputs (_(" -pie Create a position independent executable.\n"), stdout);
3438 fputs (_(" -shared Create a shared library.\n"), stdout);
3440 -x <language> Specify the language of the following input files.\n\
3441 Permissible languages include: c c++ assembler none\n\
3442 'none' means revert to the default behavior of\n\
3443 guessing the language based on the file's extension.\n\
3447 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3448 passed on to the various sub-processes invoked by %s. In order to pass\n\
3449 other options on to these processes the -W<letter> options must be used.\n\
3452 /* The rest of the options are displayed by invocations of the various
3457 add_preprocessor_option (const char *option, int len)
3459 preprocessor_options.safe_push (save_string (option, len));
3463 add_assembler_option (const char *option, int len)
3465 assembler_options.safe_push (save_string (option, len));
3469 add_linker_option (const char *option, int len)
3471 linker_options.safe_push (save_string (option, len));
3474 /* Allocate space for an input file in infiles. */
3479 if (n_infiles_alloc == 0)
3481 n_infiles_alloc = 16;
3482 infiles = XNEWVEC (struct infile, n_infiles_alloc);
3484 else if (n_infiles_alloc == n_infiles)
3486 n_infiles_alloc *= 2;
3487 infiles = XRESIZEVEC (struct infile, infiles, n_infiles_alloc);
3491 /* Store an input file with the given NAME and LANGUAGE in
3495 add_infile (const char *name, const char *language)
3498 infiles[n_infiles].name = name;
3499 infiles[n_infiles++].language = language;
3502 /* Allocate space for a switch in switches. */
3507 if (n_switches_alloc == 0)
3509 n_switches_alloc = 16;
3510 switches = XNEWVEC (struct switchstr, n_switches_alloc);
3512 else if (n_switches_alloc == n_switches)
3514 n_switches_alloc *= 2;
3515 switches = XRESIZEVEC (struct switchstr, switches, n_switches_alloc);
3519 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3520 as validated if VALIDATED and KNOWN if it is an internal switch. */
3523 save_switch (const char *opt, size_t n_args, const char *const *args,
3524 bool validated, bool known)
3527 switches[n_switches].part1 = opt + 1;
3529 switches[n_switches].args = 0;
3532 switches[n_switches].args = XNEWVEC (const char *, n_args + 1);
3533 memcpy (switches[n_switches].args, args, n_args * sizeof (const char *));
3534 switches[n_switches].args[n_args] = NULL;
3537 switches[n_switches].live_cond = 0;
3538 switches[n_switches].validated = validated;
3539 switches[n_switches].known = known;
3540 switches[n_switches].ordering = 0;
3544 /* Handle an option DECODED that is unknown to the option-processing
3548 driver_unknown_option_callback (const struct cl_decoded_option *decoded)
3550 const char *opt = decoded->arg;
3551 if (opt[1] == 'W' && opt[2] == 'n' && opt[3] == 'o' && opt[4] == '-'
3552 && !(decoded->errors & CL_ERR_NEGATIVE))
3554 /* Leave unknown -Wno-* options for the compiler proper, to be
3555 diagnosed only if there are warnings. */
3556 save_switch (decoded->canonical_option[0],
3557 decoded->canonical_option_num_elements - 1,
3558 &decoded->canonical_option[1], false, true);
3561 if (decoded->opt_index == OPT_SPECIAL_unknown)
3563 /* Give it a chance to define it a spec file. */
3564 save_switch (decoded->canonical_option[0],
3565 decoded->canonical_option_num_elements - 1,
3566 &decoded->canonical_option[1], false, false);
3573 /* Handle an option DECODED that is not marked as CL_DRIVER.
3574 LANG_MASK will always be CL_DRIVER. */
3577 driver_wrong_lang_callback (const struct cl_decoded_option *decoded,
3578 unsigned int lang_mask ATTRIBUTE_UNUSED)
3580 /* At this point, non-driver options are accepted (and expected to
3581 be passed down by specs) unless marked to be rejected by the
3582 driver. Options to be rejected by the driver but accepted by the
3583 compilers proper are treated just like completely unknown
3585 const struct cl_option *option = &cl_options[decoded->opt_index];
3587 if (option->cl_reject_driver)
3588 error ("unrecognized command line option %qs",
3589 decoded->orig_option_with_args_text);
3591 save_switch (decoded->canonical_option[0],
3592 decoded->canonical_option_num_elements - 1,
3593 &decoded->canonical_option[1], false, true);
3596 static const char *spec_lang = 0;
3597 static int last_language_n_infiles;
3599 /* Parse -foffload option argument. */
3602 handle_foffload_option (const char *arg)
3604 const char *c, *cur, *n, *next, *end;
3607 /* If option argument starts with '-' then no target is specified and we
3608 do not need to parse it. */
3612 end = strchr (arg, '=');
3614 end = strchr (arg, '\0');
3619 next = strchr (cur, ',');
3622 next = (next > end) ? end : next;
3624 target = XNEWVEC (char, next - cur + 1);
3625 memcpy (target, cur, next - cur);
3626 target[next - cur] = '\0';
3628 /* If 'disable' is passed to the option, stop parsing the option and clean
3629 the list of offload targets. */
3630 if (strcmp (target, "disable") == 0)
3632 free (offload_targets);
3633 offload_targets = xstrdup ("");
3637 /* Check that GCC is configured to support the offload target. */
3638 c = OFFLOAD_TARGETS;
3641 n = strchr (c, ',');
3643 n = strchr (c, '\0');
3645 if (next - cur == n - c && strncmp (target, c, n - c) == 0)
3648 c = *n ? n + 1 : NULL;
3652 fatal_error (input_location,
3653 "GCC is not configured to support %s as offload target",
3656 if (!offload_targets)
3658 offload_targets = target;
3663 /* Check that the target hasn't already presented in the list. */
3664 c = offload_targets;
3667 n = strchr (c, ':');
3669 n = strchr (c, '\0');
3671 if (next - cur == n - c && strncmp (c, target, n - c) == 0)
3678 /* If duplicate is not found, append the target to the list. */
3681 size_t offload_targets_len = strlen (offload_targets);
3683 = XRESIZEVEC (char, offload_targets,
3684 offload_targets_len + 1 + next - cur + 1);
3685 offload_targets[offload_targets_len++] = ':';
3686 memcpy (offload_targets + offload_targets_len, target, next - cur + 1);
3691 XDELETEVEC (target);
3695 /* Handle a driver option; arguments and return value as for
3699 driver_handle_option (struct gcc_options *opts,
3700 struct gcc_options *opts_set,
3701 const struct cl_decoded_option *decoded,
3702 unsigned int lang_mask ATTRIBUTE_UNUSED, int kind,
3704 const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED,
3705 diagnostic_context *dc)
3707 size_t opt_index = decoded->opt_index;
3708 const char *arg = decoded->arg;
3709 const char *compare_debug_replacement_opt;
3710 int value = decoded->value;
3711 bool validated = false;
3712 bool do_save = true;
3714 gcc_assert (opts == &global_options);
3715 gcc_assert (opts_set == &global_options_set);
3716 gcc_assert (kind == DK_UNSPECIFIED);
3717 gcc_assert (loc == UNKNOWN_LOCATION);
3718 gcc_assert (dc == global_dc);
3724 struct spec_list *sl;
3726 for (sl = specs; sl; sl = sl->next)
3727 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3728 if (link_command_spec)
3729 printf ("*link_command:\n%s\n\n", link_command_spec);
3733 case OPT_dumpversion:
3734 printf ("%s\n", spec_version);
3737 case OPT_dumpmachine:
3738 printf ("%s\n", spec_machine);
3744 /* CPP driver cannot obtain switch from cc1_options. */
3746 add_preprocessor_option ("--version", strlen ("--version"));
3747 add_assembler_option ("--version", strlen ("--version"));
3748 add_linker_option ("--version", strlen ("--version"));
3752 print_help_list = 1;
3754 /* CPP driver cannot obtain switch from cc1_options. */
3756 add_preprocessor_option ("--help", 6);
3757 add_assembler_option ("--help", 6);
3758 add_linker_option ("--help", 6);
3762 print_subprocess_help = 2;
3765 case OPT__target_help:
3766 print_subprocess_help = 1;
3768 /* CPP driver cannot obtain switch from cc1_options. */
3770 add_preprocessor_option ("--target-help", 13);
3771 add_assembler_option ("--target-help", 13);
3772 add_linker_option ("--target-help", 13);
3775 case OPT__no_sysroot_suffix:
3776 case OPT_pass_exit_codes:
3777 case OPT_print_search_dirs:
3778 case OPT_print_file_name_:
3779 case OPT_print_prog_name_:
3780 case OPT_print_multi_lib:
3781 case OPT_print_multi_directory:
3782 case OPT_print_sysroot:
3783 case OPT_print_multi_os_directory:
3784 case OPT_print_multiarch:
3785 case OPT_print_sysroot_headers_suffix:
3788 /* These options set the variables specified in common.opt
3789 automatically, and do not need to be saved for spec
3794 case OPT_print_libgcc_file_name:
3795 print_file_name = "libgcc.a";
3799 case OPT_fuse_ld_bfd:
3803 case OPT_fuse_ld_gold:
3807 case OPT_fcompare_debug_second:
3808 compare_debug_second = 1;
3811 case OPT_fcompare_debug:
3815 compare_debug_replacement_opt = "-fcompare-debug=";
3817 goto compare_debug_with_arg;
3820 compare_debug_replacement_opt = "-fcompare-debug=-gtoggle";
3822 goto compare_debug_with_arg;
3829 case OPT_fcompare_debug_:
3830 compare_debug_replacement_opt = decoded->canonical_option[0];
3831 compare_debug_with_arg:
3832 gcc_assert (decoded->canonical_option_num_elements == 1);
3833 gcc_assert (arg != NULL);
3838 if (compare_debug < 0)
3839 compare_debug_opt = NULL;
3841 compare_debug_opt = arg;
3842 save_switch (compare_debug_replacement_opt, 0, NULL, validated, true);
3845 case OPT_fdiagnostics_color_:
3846 diagnostic_color_init (dc, value);
3852 /* Pass the rest of this option to the assembler. */
3854 /* Split the argument at commas. */
3856 for (j = 0; arg[j]; j++)
3859 add_assembler_option (arg + prev, j - prev);
3863 /* Record the part after the last comma. */
3864 add_assembler_option (arg + prev, j - prev);
3872 /* Pass the rest of this option to the preprocessor. */
3874 /* Split the argument at commas. */
3876 for (j = 0; arg[j]; j++)
3879 add_preprocessor_option (arg + prev, j - prev);
3883 /* Record the part after the last comma. */
3884 add_preprocessor_option (arg + prev, j - prev);
3892 /* Split the argument at commas. */
3894 for (j = 0; arg[j]; j++)
3897 add_infile (save_string (arg + prev, j - prev), "*");
3900 /* Record the part after the last comma. */
3901 add_infile (arg + prev, "*");
3907 add_infile (arg, "*");
3911 case OPT_Xpreprocessor:
3912 add_preprocessor_option (arg, strlen (arg));
3916 case OPT_Xassembler:
3917 add_assembler_option (arg, strlen (arg));
3922 /* POSIX allows separation of -l and the lib arg; canonicalize
3923 by concatenating -l with its arg */
3924 add_infile (concat ("-l", arg, NULL), "*");
3929 /* Similarly, canonicalize -L for linkers that may not accept
3930 separate arguments. */
3931 save_switch (concat ("-L", arg, NULL), 0, NULL, validated, true);
3936 save_switch (concat ("-F", arg, NULL), 0, NULL, validated, true);
3939 case OPT_save_temps:
3940 save_temps_flag = SAVE_TEMPS_CWD;
3944 case OPT_save_temps_:
3945 if (strcmp (arg, "cwd") == 0)
3946 save_temps_flag = SAVE_TEMPS_CWD;
3947 else if (strcmp (arg, "obj") == 0
3948 || strcmp (arg, "object") == 0)
3949 save_temps_flag = SAVE_TEMPS_OBJ;
3951 fatal_error (input_location, "%qs is an unknown -save-temps option",
3952 decoded->orig_option_with_args_text);
3955 case OPT_no_canonical_prefixes:
3956 /* Already handled as a special case, so ignored here. */
3962 /* These options set the variables specified in common.opt
3963 automatically, but do need to be saved for spec
3969 struct user_specs *user = XNEW (struct user_specs);
3971 user->next = (struct user_specs *) 0;
3972 user->filename = arg;
3973 if (user_specs_tail)
3974 user_specs_tail->next = user;
3976 user_specs_head = user;
3977 user_specs_tail = user;
3983 target_system_root = arg;
3984 target_system_root_changed = 1;
3989 if (report_times_to_file)
3990 fclose (report_times_to_file);
3991 report_times_to_file = fopen (arg, "a");
3997 This is similar to -v except that there is no execution
3998 of the commands and the echoed arguments are quoted. It
3999 is intended for use in shell scripts to capture the
4000 driver-generated command line. */
4001 verbose_only_flag++;
4008 size_t len = strlen (arg);
4010 /* Catch the case where the user has forgotten to append a
4011 directory separator to the path. Note, they may be using
4012 -B to add an executable name prefix, eg "i386-elf-", in
4013 order to distinguish between multiple installations of
4014 GCC in the same directory. Hence we must check to see
4015 if appending a directory separator actually makes a
4016 valid directory name. */
4017 if (!IS_DIR_SEPARATOR (arg[len - 1])
4018 && is_directory (arg, false))
4020 char *tmp = XNEWVEC (char, len + 2);
4022 tmp[len] = DIR_SEPARATOR;
4027 add_prefix (&exec_prefixes, arg, NULL,
4028 PREFIX_PRIORITY_B_OPT, 0, 0);
4029 add_prefix (&startfile_prefixes, arg, NULL,
4030 PREFIX_PRIORITY_B_OPT, 0, 0);
4031 add_prefix (&include_prefixes, arg, NULL,
4032 PREFIX_PRIORITY_B_OPT, 0, 0);
4043 if (!strcmp (spec_lang, "none"))
4044 /* Suppress the warning if -xnone comes after the last input
4045 file, because alternate command interfaces like g++ might
4046 find it useful to place -xnone after each input file. */
4049 last_language_n_infiles = n_infiles;
4055 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
4056 arg = convert_filename (arg, ! have_c, 0);
4059 /* Save the output name in case -save-temps=obj was used. */
4060 save_temps_prefix = xstrdup (arg);
4061 /* On some systems, ld cannot handle "-o" without a space. So
4062 split the option from its argument. */
4063 save_switch ("-o", 1, &arg, validated, true);
4066 #ifdef ENABLE_DEFAULT_PIE
4068 /* -pie is turned on by default. */
4071 case OPT_static_libgcc:
4072 case OPT_shared_libgcc:
4073 case OPT_static_libgfortran:
4074 case OPT_static_libstdc__:
4075 /* These are always valid, since gcc.c itself understands the
4076 first two, gfortranspec.c understands -static-libgfortran and
4077 g++spec.c understands -static-libstdc++ */
4086 handle_foffload_option (arg);
4090 /* Various driver options need no special processing at this
4091 point, having been handled in a prescan above or being
4092 handled by specs. */
4097 save_switch (decoded->canonical_option[0],
4098 decoded->canonical_option_num_elements - 1,
4099 &decoded->canonical_option[1], validated, true);
4103 /* Put the driver's standard set of option handlers in *HANDLERS. */
4106 set_option_handlers (struct cl_option_handlers *handlers)
4108 handlers->unknown_option_callback = driver_unknown_option_callback;
4109 handlers->wrong_lang_callback = driver_wrong_lang_callback;
4110 handlers->num_handlers = 3;
4111 handlers->handlers[0].handler = driver_handle_option;
4112 handlers->handlers[0].mask = CL_DRIVER;
4113 handlers->handlers[1].handler = common_handle_option;
4114 handlers->handlers[1].mask = CL_COMMON;
4115 handlers->handlers[2].handler = target_handle_option;
4116 handlers->handlers[2].mask = CL_TARGET;
4119 /* Create the vector `switches' and its contents.
4120 Store its length in `n_switches'. */
4123 process_command (unsigned int decoded_options_count,
4124 struct cl_decoded_option *decoded_options)
4128 char *tooldir_prefix, *tooldir_prefix2;
4129 char *(*get_relative_prefix) (const char *, const char *,
4130 const char *) = NULL;
4131 struct cl_option_handlers handlers;
4134 gcc_exec_prefix = env.get ("GCC_EXEC_PREFIX");
4138 added_libraries = 0;
4140 /* Figure compiler version from version string. */
4142 compiler_version = temp1 = xstrdup (version_string);
4144 for (; *temp1; ++temp1)
4153 /* Handle any -no-canonical-prefixes flag early, to assign the function
4154 that builds relative prefixes. This function creates default search
4155 paths that are needed later in normal option handling. */
4157 for (j = 1; j < decoded_options_count; j++)
4159 if (decoded_options[j].opt_index == OPT_no_canonical_prefixes)
4161 get_relative_prefix = make_relative_prefix_ignore_links;
4165 if (! get_relative_prefix)
4166 get_relative_prefix = make_relative_prefix;
4168 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
4169 see if we can create it from the pathname specified in
4170 decoded_options[0].arg. */
4172 gcc_libexec_prefix = standard_libexec_prefix;
4174 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
4175 if (!gcc_exec_prefix)
4177 gcc_exec_prefix = get_relative_prefix (decoded_options[0].arg,
4178 standard_bindir_prefix,
4179 standard_exec_prefix);
4180 gcc_libexec_prefix = get_relative_prefix (decoded_options[0].arg,
4181 standard_bindir_prefix,
4182 standard_libexec_prefix);
4183 if (gcc_exec_prefix)
4184 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
4188 /* make_relative_prefix requires a program name, but
4189 GCC_EXEC_PREFIX is typically a directory name with a trailing
4190 / (which is ignored by make_relative_prefix), so append a
4192 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL);
4193 gcc_libexec_prefix = get_relative_prefix (tmp_prefix,
4194 standard_exec_prefix,
4195 standard_libexec_prefix);
4197 /* The path is unrelocated, so fallback to the original setting. */
4198 if (!gcc_libexec_prefix)
4199 gcc_libexec_prefix = standard_libexec_prefix;
4205 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
4206 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
4207 or an automatically created GCC_EXEC_PREFIX from
4208 decoded_options[0].arg. */
4210 /* Do language-specific adjustment/addition of flags. */
4211 lang_specific_driver (&decoded_options, &decoded_options_count,
4214 if (gcc_exec_prefix)
4216 int len = strlen (gcc_exec_prefix);
4218 if (len > (int) sizeof ("/lib/gcc/") - 1
4219 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
4221 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
4222 if (IS_DIR_SEPARATOR (*temp)
4223 && filename_ncmp (temp + 1, "lib", 3) == 0
4224 && IS_DIR_SEPARATOR (temp[4])
4225 && filename_ncmp (temp + 5, "gcc", 3) == 0)
4226 len -= sizeof ("/lib/gcc/") - 1;
4229 set_std_prefix (gcc_exec_prefix, len);
4230 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
4231 PREFIX_PRIORITY_LAST, 0, 0);
4232 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
4233 PREFIX_PRIORITY_LAST, 0, 0);
4236 /* COMPILER_PATH and LIBRARY_PATH have values
4237 that are lists of directory names with colons. */
4239 temp = env.get ("COMPILER_PATH");
4242 const char *startp, *endp;
4243 char *nstore = (char *) alloca (strlen (temp) + 3);
4245 startp = endp = temp;
4248 if (*endp == PATH_SEPARATOR || *endp == 0)
4250 strncpy (nstore, startp, endp - startp);
4252 strcpy (nstore, concat (".", dir_separator_str, NULL));
4253 else if (!IS_DIR_SEPARATOR (endp[-1]))
4255 nstore[endp - startp] = DIR_SEPARATOR;
4256 nstore[endp - startp + 1] = 0;
4259 nstore[endp - startp] = 0;
4260 add_prefix (&exec_prefixes, nstore, 0,
4261 PREFIX_PRIORITY_LAST, 0, 0);
4262 add_prefix (&include_prefixes, nstore, 0,
4263 PREFIX_PRIORITY_LAST, 0, 0);
4266 endp = startp = endp + 1;
4273 temp = env.get (LIBRARY_PATH_ENV);
4274 if (temp && *cross_compile == '0')
4276 const char *startp, *endp;
4277 char *nstore = (char *) alloca (strlen (temp) + 3);
4279 startp = endp = temp;
4282 if (*endp == PATH_SEPARATOR || *endp == 0)
4284 strncpy (nstore, startp, endp - startp);
4286 strcpy (nstore, concat (".", dir_separator_str, NULL));
4287 else if (!IS_DIR_SEPARATOR (endp[-1]))
4289 nstore[endp - startp] = DIR_SEPARATOR;
4290 nstore[endp - startp + 1] = 0;
4293 nstore[endp - startp] = 0;
4294 add_prefix (&startfile_prefixes, nstore, NULL,
4295 PREFIX_PRIORITY_LAST, 0, 1);
4298 endp = startp = endp + 1;
4305 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
4306 temp = env.get ("LPATH");
4307 if (temp && *cross_compile == '0')
4309 const char *startp, *endp;
4310 char *nstore = (char *) alloca (strlen (temp) + 3);
4312 startp = endp = temp;
4315 if (*endp == PATH_SEPARATOR || *endp == 0)
4317 strncpy (nstore, startp, endp - startp);
4319 strcpy (nstore, concat (".", dir_separator_str, NULL));
4320 else if (!IS_DIR_SEPARATOR (endp[-1]))
4322 nstore[endp - startp] = DIR_SEPARATOR;
4323 nstore[endp - startp + 1] = 0;
4326 nstore[endp - startp] = 0;
4327 add_prefix (&startfile_prefixes, nstore, NULL,
4328 PREFIX_PRIORITY_LAST, 0, 1);
4331 endp = startp = endp + 1;
4338 /* Process the options and store input files and switches in their
4341 last_language_n_infiles = -1;
4343 set_option_handlers (&handlers);
4345 for (j = 1; j < decoded_options_count; j++)
4347 switch (decoded_options[j].opt_index)
4359 for (j = 1; j < decoded_options_count; j++)
4361 if (decoded_options[j].opt_index == OPT_SPECIAL_input_file)
4363 const char *arg = decoded_options[j].arg;
4364 const char *p = strrchr (arg, '@');
4368 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4369 arg = convert_filename (arg, 0, access (arg, F_OK));
4371 /* For LTO static archive support we handle input file
4372 specifications that are composed of a filename and
4373 an offset like FNAME@OFFSET. */
4376 && sscanf (p, "@%li%n", &offset, &consumed) >= 1
4377 && strlen (p) == (unsigned int)consumed)
4379 fname = (char *)xmalloc (p - arg + 1);
4380 memcpy (fname, arg, p - arg);
4381 fname[p - arg] = '\0';
4382 /* Only accept non-stdin and existing FNAME parts, otherwise
4383 try with the full name. */
4384 if (strcmp (fname, "-") == 0 || access (fname, F_OK) < 0)
4387 fname = xstrdup (arg);
4391 fname = xstrdup (arg);
4393 if (strcmp (fname, "-") != 0 && access (fname, F_OK) < 0)
4394 perror_with_name (fname);
4396 add_infile (arg, spec_lang);
4402 read_cmdline_option (&global_options, &global_options_set,
4403 decoded_options + j, UNKNOWN_LOCATION,
4404 CL_DRIVER, &handlers, global_dc);
4407 /* If the user didn't specify any, default to all configured offload
4409 if (ENABLE_OFFLOADING && offload_targets == NULL)
4410 handle_foffload_option (OFFLOAD_TARGETS);
4413 && strcmp (output_file, "-") != 0
4414 && strcmp (output_file, HOST_BIT_BUCKET) != 0)
4417 for (i = 0; i < n_infiles; i++)
4418 if ((!infiles[i].language || infiles[i].language[0] != '*')
4419 && canonical_filename_eq (infiles[i].name, output_file))
4420 fatal_error (input_location,
4421 "input file %qs is the same as output file",
4425 /* If -save-temps=obj and -o name, create the prefix to use for %b.
4426 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
4427 if (save_temps_flag == SAVE_TEMPS_OBJ && save_temps_prefix != NULL)
4429 save_temps_length = strlen (save_temps_prefix);
4430 temp = strrchr (lbasename (save_temps_prefix), '.');
4433 save_temps_length -= strlen (temp);
4434 save_temps_prefix[save_temps_length] = '\0';
4438 else if (save_temps_prefix != NULL)
4440 free (save_temps_prefix);
4441 save_temps_prefix = NULL;
4444 if (save_temps_flag && use_pipes)
4446 /* -save-temps overrides -pipe, so that temp files are produced */
4447 if (save_temps_flag)
4448 warning (0, "-pipe ignored because -save-temps specified");
4454 const char *gcd = env.get ("GCC_COMPARE_DEBUG");
4456 if (gcd && gcd[0] == '-')
4459 compare_debug_opt = gcd;
4461 else if (gcd && *gcd && strcmp (gcd, "0"))
4464 compare_debug_opt = "-gtoggle";
4467 else if (compare_debug < 0)
4470 gcc_assert (!compare_debug_opt);
4473 /* Set up the search paths. We add directories that we expect to
4474 contain GNU Toolchain components before directories specified by
4475 the machine description so that we will find GNU components (like
4476 the GNU assembler) before those of the host system. */
4478 /* If we don't know where the toolchain has been installed, use the
4479 configured-in locations. */
4480 if (!gcc_exec_prefix)
4483 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
4484 PREFIX_PRIORITY_LAST, 1, 0);
4485 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
4486 PREFIX_PRIORITY_LAST, 2, 0);
4487 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
4488 PREFIX_PRIORITY_LAST, 2, 0);
4490 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
4491 PREFIX_PRIORITY_LAST, 1, 0);
4494 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix));
4495 tooldir_prefix2 = concat (tooldir_base_prefix, spec_machine,
4496 dir_separator_str, NULL);
4498 /* Look for tools relative to the location from which the driver is
4499 running, or, if that is not available, the configured prefix. */
4501 = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
4502 spec_host_machine, dir_separator_str, spec_version,
4503 accel_dir_suffix, dir_separator_str, tooldir_prefix2, NULL);
4504 free (tooldir_prefix2);
4506 add_prefix (&exec_prefixes,
4507 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
4508 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0);
4509 add_prefix (&startfile_prefixes,
4510 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
4511 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1);
4512 free (tooldir_prefix);
4514 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
4515 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
4516 then consider it to relocate with the rest of the GCC installation
4517 if GCC_EXEC_PREFIX is set.
4518 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
4519 if (target_system_root && !target_system_root_changed && gcc_exec_prefix)
4521 char *tmp_prefix = get_relative_prefix (decoded_options[0].arg,
4522 standard_bindir_prefix,
4523 target_system_root);
4524 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
4526 target_system_root = tmp_prefix;
4527 target_system_root_changed = 1;
4532 /* More prefixes are enabled in main, after we read the specs file
4533 and determine whether this is cross-compilation or not. */
4535 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4536 warning (0, "%<-x %s%> after last input file has no effect", spec_lang);
4538 /* Synthesize -fcompare-debug flag from the GCC_COMPARE_DEBUG
4539 environment variable. */
4540 if (compare_debug == 2 || compare_debug == 3)
4542 const char *opt = concat ("-fcompare-debug=", compare_debug_opt, NULL);
4543 save_switch (opt, 0, NULL, false, true);
4547 /* Ensure we only invoke each subprocess once. */
4548 if (print_subprocess_help || print_help_list || print_version)
4552 /* Create a dummy input file, so that we can pass
4553 the help option on to the various sub-processes. */
4554 add_infile ("help-dummy", "c");
4557 /* Decide if undefined variable references are allowed in specs. */
4559 /* --version and --help alone or together are safe. Note that -v would
4560 make them unsafe, as they'd then be run for subprocesses as well, the
4561 location of which might depend on variables possibly coming from
4564 Count the number of options we have for which undefined variables
4565 are harmless for sure, and check that nothing else is set. */
4567 unsigned n_varsafe_options = 0;
4570 n_varsafe_options++;
4572 if (print_help_list)
4573 n_varsafe_options++;
4575 spec_undefvar_allowed = (n_varsafe_options == decoded_options_count - 1);
4578 switches[n_switches].part1 = 0;
4580 infiles[n_infiles].name = 0;
4583 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4584 and place that in the environment. */
4587 set_collect_gcc_options (void)
4592 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4594 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4595 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4598 for (i = 0; (int) i < n_switches; i++)
4600 const char *const *args;
4603 obstack_grow (&collect_obstack, " ", 1);
4607 /* Ignore elided switches. */
4608 if ((switches[i].live_cond
4609 & (SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC))
4613 obstack_grow (&collect_obstack, "'-", 2);
4614 q = switches[i].part1;
4615 while ((p = strchr (q, '\'')))
4617 obstack_grow (&collect_obstack, q, p - q);
4618 obstack_grow (&collect_obstack, "'\\''", 4);
4621 obstack_grow (&collect_obstack, q, strlen (q));
4622 obstack_grow (&collect_obstack, "'", 1);
4624 for (args = switches[i].args; args && *args; args++)
4626 obstack_grow (&collect_obstack, " '", 2);
4628 while ((p = strchr (q, '\'')))
4630 obstack_grow (&collect_obstack, q, p - q);
4631 obstack_grow (&collect_obstack, "'\\''", 4);
4634 obstack_grow (&collect_obstack, q, strlen (q));
4635 obstack_grow (&collect_obstack, "'", 1);
4638 obstack_grow (&collect_obstack, "\0", 1);
4639 xputenv (XOBFINISH (&collect_obstack, char *));
4642 /* Process a spec string, accumulating and running commands. */
4644 /* These variables describe the input file name.
4645 input_file_number is the index on outfiles of this file,
4646 so that the output file name can be stored for later use by %o.
4647 input_basename is the start of the part of the input file
4648 sans all directory names, and basename_length is the number
4649 of characters starting there excluding the suffix .c or whatever. */
4651 static const char *gcc_input_filename;
4652 static int input_file_number;
4653 size_t input_filename_length;
4654 static int basename_length;
4655 static int suffixed_basename_length;
4656 static const char *input_basename;
4657 static const char *input_suffix;
4658 #ifndef HOST_LACKS_INODE_NUMBERS
4659 static struct stat input_stat;
4661 static int input_stat_set;
4663 /* The compiler used to process the current input file. */
4664 static struct compiler *input_file_compiler;
4666 /* These are variables used within do_spec and do_spec_1. */
4668 /* Nonzero if an arg has been started and not yet terminated
4669 (with space, tab or newline). */
4670 static int arg_going;
4672 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4673 is a temporary file name. */
4674 static int delete_this_arg;
4676 /* Nonzero means %w has been seen; the next arg to be terminated
4677 is the output file name of this compilation. */
4678 static int this_is_output_file;
4680 /* Nonzero means %s has been seen; the next arg to be terminated
4681 is the name of a library file and we should try the standard
4682 search dirs for it. */
4683 static int this_is_library_file;
4685 /* Nonzero means %T has been seen; the next arg to be terminated
4686 is the name of a linker script and we should try all of the
4687 standard search dirs for it. If it is found insert a --script
4688 command line switch and then substitute the full path in place,
4689 otherwise generate an error message. */
4690 static int this_is_linker_script;
4692 /* Nonzero means that the input of this command is coming from a pipe. */
4693 static int input_from_pipe;
4695 /* Nonnull means substitute this for any suffix when outputting a switches
4697 static const char *suffix_subst;
4699 /* If there is an argument being accumulated, terminate it and store it. */
4702 end_going_arg (void)
4708 obstack_1grow (&obstack, 0);
4709 string = XOBFINISH (&obstack, const char *);
4710 if (this_is_library_file)
4711 string = find_file (string);
4712 if (this_is_linker_script)
4714 char * full_script_path = find_a_file (&startfile_prefixes, string, R_OK, true);
4716 if (full_script_path == NULL)
4718 error ("unable to locate default linker script %qs in the library search paths", string);
4719 /* Script was not found on search path. */
4722 store_arg ("--script", false, false);
4723 string = full_script_path;
4725 store_arg (string, delete_this_arg, this_is_output_file);
4726 if (this_is_output_file)
4727 outfiles[input_file_number] = string;
4733 /* Parse the WRAPPER string which is a comma separated list of the command line
4734 and insert them into the beginning of argbuf. */
4737 insert_wrapper (const char *wrapper)
4741 char *buf = xstrdup (wrapper);
4743 unsigned int old_length = argbuf.length ();
4751 while ((p = strchr (p, ',')) != NULL);
4753 argbuf.safe_grow (old_length + n);
4754 memmove (argbuf.address () + n,
4756 old_length * sizeof (const_char_p));
4770 while ((p = strchr (p, ',')) != NULL);
4771 gcc_assert (i == n);
4774 /* Process the spec SPEC and run the commands specified therein.
4775 Returns 0 if the spec is successfully processed; -1 if failed. */
4778 do_spec (const char *spec)
4782 value = do_spec_2 (spec);
4784 /* Force out any unfinished command.
4785 If -pipe, this forces out the last command if it ended in `|'. */
4788 if (argbuf.length () > 0
4789 && !strcmp (argbuf.last (), "|"))
4792 set_collect_gcc_options ();
4794 if (argbuf.length () > 0)
4802 do_spec_2 (const char *spec)
4808 delete_this_arg = 0;
4809 this_is_output_file = 0;
4810 this_is_library_file = 0;
4811 this_is_linker_script = 0;
4812 input_from_pipe = 0;
4813 suffix_subst = NULL;
4815 result = do_spec_1 (spec, 0, NULL);
4823 /* Process the given spec string and add any new options to the end
4824 of the switches/n_switches array. */
4827 do_option_spec (const char *name, const char *spec)
4829 unsigned int i, value_count, value_len;
4830 const char *p, *q, *value;
4831 char *tmp_spec, *tmp_spec_p;
4833 if (configure_default_options[0].name == NULL)
4836 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4837 if (strcmp (configure_default_options[i].name, name) == 0)
4839 if (i == ARRAY_SIZE (configure_default_options))
4842 value = configure_default_options[i].value;
4843 value_len = strlen (value);
4845 /* Compute the size of the final spec. */
4848 while ((p = strstr (p, "%(VALUE)")) != NULL)
4854 /* Replace each %(VALUE) by the specified value. */
4855 tmp_spec = (char *) alloca (strlen (spec) + 1
4856 + value_count * (value_len - strlen ("%(VALUE)")));
4857 tmp_spec_p = tmp_spec;
4859 while ((p = strstr (q, "%(VALUE)")) != NULL)
4861 memcpy (tmp_spec_p, q, p - q);
4862 tmp_spec_p = tmp_spec_p + (p - q);
4863 memcpy (tmp_spec_p, value, value_len);
4864 tmp_spec_p += value_len;
4865 q = p + strlen ("%(VALUE)");
4867 strcpy (tmp_spec_p, q);
4869 do_self_spec (tmp_spec);
4872 /* Process the given spec string and add any new options to the end
4873 of the switches/n_switches array. */
4876 do_self_spec (const char *spec)
4881 do_spec_1 (" ", 0, NULL);
4883 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4884 do_self_specs adds the replacements to switches array, so it shouldn't
4885 be processed afterwards. */
4886 for (i = 0; i < n_switches; i++)
4887 if ((switches[i].live_cond & SWITCH_IGNORE))
4888 switches[i].live_cond |= SWITCH_IGNORE_PERMANENTLY;
4890 if (argbuf.length () > 0)
4892 const char **argbuf_copy;
4893 struct cl_decoded_option *decoded_options;
4894 struct cl_option_handlers handlers;
4895 unsigned int decoded_options_count;
4898 /* Create a copy of argbuf with a dummy argv[0] entry for
4899 decode_cmdline_options_to_array. */
4900 argbuf_copy = XNEWVEC (const char *,
4901 argbuf.length () + 1);
4902 argbuf_copy[0] = "";
4903 memcpy (argbuf_copy + 1, argbuf.address (),
4904 argbuf.length () * sizeof (const char *));
4906 decode_cmdline_options_to_array (argbuf.length () + 1,
4908 CL_DRIVER, &decoded_options,
4909 &decoded_options_count);
4912 set_option_handlers (&handlers);
4914 for (j = 1; j < decoded_options_count; j++)
4916 switch (decoded_options[j].opt_index)
4918 case OPT_SPECIAL_input_file:
4919 /* Specs should only generate options, not input
4921 if (strcmp (decoded_options[j].arg, "-") != 0)
4922 fatal_error (input_location,
4923 "switch %qs does not start with %<-%>",
4924 decoded_options[j].arg);
4926 fatal_error (input_location,
4927 "spec-generated switch is just %<-%>");
4930 case OPT_fcompare_debug_second:
4931 case OPT_fcompare_debug:
4932 case OPT_fcompare_debug_:
4934 /* Avoid duplicate processing of some options from
4935 compare-debug specs; just save them here. */
4936 save_switch (decoded_options[j].canonical_option[0],
4937 (decoded_options[j].canonical_option_num_elements
4939 &decoded_options[j].canonical_option[1], false, true);
4943 read_cmdline_option (&global_options, &global_options_set,
4944 decoded_options + j, UNKNOWN_LOCATION,
4945 CL_DRIVER, &handlers, global_dc);
4950 free (decoded_options);
4953 switches[n_switches].part1 = 0;
4957 /* Callback for processing %D and %I specs. */
4959 struct spec_path_info {
4964 bool separate_options;
4968 spec_path (char *path, void *data)
4970 struct spec_path_info *info = (struct spec_path_info *) data;
4974 if (info->omit_relative && !IS_ABSOLUTE_PATH (path))
4977 if (info->append_len != 0)
4979 len = strlen (path);
4980 memcpy (path + len, info->append, info->append_len + 1);
4983 if (!is_directory (path, true))
4986 do_spec_1 (info->option, 1, NULL);
4987 if (info->separate_options)
4988 do_spec_1 (" ", 0, NULL);
4990 if (info->append_len == 0)
4992 len = strlen (path);
4993 save = path[len - 1];
4994 if (IS_DIR_SEPARATOR (path[len - 1]))
4995 path[len - 1] = '\0';
4998 do_spec_1 (path, 1, NULL);
4999 do_spec_1 (" ", 0, NULL);
5001 /* Must not damage the original path. */
5002 if (info->append_len == 0)
5003 path[len - 1] = save;
5008 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
5012 create_at_file (char **argv)
5014 char *temp_file = make_temp_file ("");
5015 char *at_argument = concat ("@", temp_file, NULL);
5016 FILE *f = fopen (temp_file, "w");
5020 fatal_error (input_location, "could not open temporary response file %s",
5023 status = writeargv (argv, f);
5026 fatal_error (input_location,
5027 "could not write to temporary response file %s",
5030 status = fclose (f);
5033 fatal_error (input_location, "could not close temporary response file %s",
5036 store_arg (at_argument, 0, 0);
5038 record_temp_file (temp_file, !save_temps_flag, !save_temps_flag);
5041 /* True if we should compile INFILE. */
5044 compile_input_file_p (struct infile *infile)
5046 if ((!infile->language) || (infile->language[0] != '*'))
5047 if (infile->incompiler == input_file_compiler)
5052 /* Process each member of VEC as a spec. */
5055 do_specs_vec (vec<char_p> vec)
5060 FOR_EACH_VEC_ELT (vec, ix, opt)
5062 do_spec_1 (opt, 1, NULL);
5063 /* Make each accumulated option a separate argument. */
5064 do_spec_1 (" ", 0, NULL);
5068 /* Process the sub-spec SPEC as a portion of a larger spec.
5069 This is like processing a whole spec except that we do
5070 not initialize at the beginning and we do not supply a
5071 newline by default at the end.
5072 INSWITCH nonzero means don't process %-sequences in SPEC;
5073 in this case, % is treated as an ordinary character.
5074 This is used while substituting switches.
5075 INSWITCH nonzero also causes SPC not to terminate an argument.
5077 Value is zero unless a line was finished
5078 and the command on that line reported an error. */
5081 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
5083 const char *p = spec;
5088 /* If it's an empty string argument to a switch, keep it as is. */
5089 if (inswitch && !*p)
5093 /* If substituting a switch, treat all chars like letters.
5094 Otherwise, NL, SPC, TAB and % are special. */
5095 switch (inswitch ? 'a' : c)
5100 if (argbuf.length () > 0
5101 && !strcmp (argbuf.last (), "|"))
5103 /* A `|' before the newline means use a pipe here,
5104 but only if -pipe was specified.
5105 Otherwise, execute now and don't pass the `|' as an arg. */
5108 input_from_pipe = 1;
5115 set_collect_gcc_options ();
5117 if (argbuf.length () > 0)
5123 /* Reinitialize for a new command, and for a new argument. */
5126 delete_this_arg = 0;
5127 this_is_output_file = 0;
5128 this_is_library_file = 0;
5129 this_is_linker_script = 0;
5130 input_from_pipe = 0;
5137 obstack_1grow (&obstack, c);
5145 /* Reinitialize for a new argument. */
5146 delete_this_arg = 0;
5147 this_is_output_file = 0;
5148 this_is_library_file = 0;
5149 this_is_linker_script = 0;
5156 fatal_error (input_location, "spec %qs invalid", spec);
5159 if (save_temps_length)
5160 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
5162 obstack_grow (&obstack, input_basename, basename_length);
5163 if (compare_debug < 0)
5164 obstack_grow (&obstack, ".gk", 3);
5169 if (save_temps_length)
5170 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
5172 obstack_grow (&obstack, input_basename, suffixed_basename_length);
5173 if (compare_debug < 0)
5174 obstack_grow (&obstack, ".gk", 3);
5179 delete_this_arg = 2;
5182 /* Dump out the directories specified with LIBRARY_PATH,
5183 followed by the absolute directories
5184 that we search for startfiles. */
5187 struct spec_path_info info;
5190 info.append_len = 0;
5191 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
5192 /* Used on systems which record the specified -L dirs
5193 and use them to search for dynamic linking.
5194 Relative directories always come from -B,
5195 and it is better not to use them for searching
5196 at run time. In particular, stage1 loses. */
5197 info.omit_relative = true;
5199 info.omit_relative = false;
5201 info.separate_options = false;
5203 for_each_path (&startfile_prefixes, true, 0, spec_path, &info);
5208 /* %efoo means report an error with `foo' as error message
5209 and don't execute any more commands for this file. */
5213 while (*p != 0 && *p != '\n')
5215 buf = (char *) alloca (p - q + 1);
5216 strncpy (buf, q, p - q);
5218 error ("%s", _(buf));
5223 /* %nfoo means report a notice with `foo' on stderr. */
5227 while (*p != 0 && *p != '\n')
5229 buf = (char *) alloca (p - q + 1);
5230 strncpy (buf, q, p - q);
5232 inform (0, "%s", _(buf));
5242 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
5243 defined, and it is not a directory, and it is
5244 writable, use it. Otherwise, treat this like any
5245 other temporary file. */
5247 if ((!save_temps_flag)
5248 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
5249 && (access (HOST_BIT_BUCKET, W_OK) == 0))
5251 obstack_grow (&obstack, HOST_BIT_BUCKET,
5252 strlen (HOST_BIT_BUCKET));
5253 delete_this_arg = 0;
5258 goto create_temp_file;
5262 obstack_1grow (&obstack, '-');
5263 delete_this_arg = 0;
5266 /* consume suffix */
5267 while (*p == '.' || ISALNUM ((unsigned char) *p))
5269 if (p[0] == '%' && p[1] == 'O')
5274 goto create_temp_file;
5278 /* consume suffix */
5279 while (*p == '.' || ISALNUM ((unsigned char) *p))
5281 if (p[0] == '%' && p[1] == 'O')
5286 goto create_temp_file;
5292 struct temp_name *t;
5294 const char *suffix = p;
5295 char *saved_suffix = NULL;
5297 while (*p == '.' || ISALNUM ((unsigned char) *p))
5299 suffix_length = p - suffix;
5300 if (p[0] == '%' && p[1] == 'O')
5303 /* We don't support extra suffix characters after %O. */
5304 if (*p == '.' || ISALNUM ((unsigned char) *p))
5305 fatal_error (input_location,
5306 "spec %qs has invalid %<%%0%c%>", spec, *p);
5307 if (suffix_length == 0)
5308 suffix = TARGET_OBJECT_SUFFIX;
5312 = XNEWVEC (char, suffix_length
5313 + strlen (TARGET_OBJECT_SUFFIX) + 1);
5314 strncpy (saved_suffix, suffix, suffix_length);
5315 strcpy (saved_suffix + suffix_length,
5316 TARGET_OBJECT_SUFFIX);
5318 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
5321 if (compare_debug < 0)
5323 suffix = concat (".gk", suffix, NULL);
5327 /* If -save-temps=obj and -o were specified, use that for the
5329 if (save_temps_length)
5332 temp_filename_length
5333 = save_temps_length + suffix_length + 1;
5334 tmp = (char *) alloca (temp_filename_length);
5335 memcpy (tmp, save_temps_prefix, save_temps_length);
5336 memcpy (tmp + save_temps_length, suffix, suffix_length);
5337 tmp[save_temps_length + suffix_length] = '\0';
5338 temp_filename = save_string (tmp, save_temps_length
5340 obstack_grow (&obstack, temp_filename,
5341 temp_filename_length);
5343 delete_this_arg = 0;
5347 /* If the gcc_input_filename has the same suffix specified
5348 for the %g, %u, or %U, and -save-temps is specified,
5349 we could end up using that file as an intermediate
5350 thus clobbering the user's source file (.e.g.,
5351 gcc -save-temps foo.s would clobber foo.s with the
5352 output of cpp0). So check for this condition and
5353 generate a temp file as the intermediate. */
5355 if (save_temps_flag)
5358 temp_filename_length = basename_length + suffix_length + 1;
5359 tmp = (char *) alloca (temp_filename_length);
5360 memcpy (tmp, input_basename, basename_length);
5361 memcpy (tmp + basename_length, suffix, suffix_length);
5362 tmp[basename_length + suffix_length] = '\0';
5363 temp_filename = tmp;
5365 if (filename_cmp (temp_filename, gcc_input_filename) != 0)
5367 #ifndef HOST_LACKS_INODE_NUMBERS
5368 struct stat st_temp;
5370 /* Note, set_input() resets input_stat_set to 0. */
5371 if (input_stat_set == 0)
5373 input_stat_set = stat (gcc_input_filename,
5375 if (input_stat_set >= 0)
5379 /* If we have the stat for the gcc_input_filename
5380 and we can do the stat for the temp_filename
5381 then the they could still refer to the same
5382 file if st_dev/st_ino's are the same. */
5383 if (input_stat_set != 1
5384 || stat (temp_filename, &st_temp) < 0
5385 || input_stat.st_dev != st_temp.st_dev
5386 || input_stat.st_ino != st_temp.st_ino)
5388 /* Just compare canonical pathnames. */
5389 char* input_realname = lrealpath (gcc_input_filename);
5390 char* temp_realname = lrealpath (temp_filename);
5391 bool files_differ = filename_cmp (input_realname, temp_realname);
5392 free (input_realname);
5393 free (temp_realname);
5398 = save_string (temp_filename,
5399 temp_filename_length - 1);
5400 obstack_grow (&obstack, temp_filename,
5401 temp_filename_length);
5403 delete_this_arg = 0;
5409 /* See if we already have an association of %g/%u/%U and
5411 for (t = temp_names; t; t = t->next)
5412 if (t->length == suffix_length
5413 && strncmp (t->suffix, suffix, suffix_length) == 0
5414 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
5417 /* Make a new association if needed. %u and %j
5419 if (t == 0 || c == 'u' || c == 'j')
5423 t = XNEW (struct temp_name);
5424 t->next = temp_names;
5427 t->length = suffix_length;
5430 t->suffix = saved_suffix;
5431 saved_suffix = NULL;
5434 t->suffix = save_string (suffix, suffix_length);
5435 t->unique = (c == 'u' || c == 'U' || c == 'j');
5436 temp_filename = make_temp_file (t->suffix);
5437 temp_filename_length = strlen (temp_filename);
5438 t->filename = temp_filename;
5439 t->filename_length = temp_filename_length;
5442 free (saved_suffix);
5444 obstack_grow (&obstack, t->filename, t->filename_length);
5445 delete_this_arg = 1;
5453 if (at_file_supplied)
5455 /* We are going to expand `%i' to `@FILE', where FILE
5456 is a newly-created temporary filename. The filenames
5457 that would usually be expanded in place of %o will be
5458 written to the temporary file. */
5463 for (i = 0; i < n_infiles; i++)
5464 if (compile_input_file_p (&infiles[i]))
5467 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
5469 /* Copy the strings over. */
5470 for (i = 0, j = 0; i < n_infiles; i++)
5471 if (compile_input_file_p (&infiles[i]))
5473 argv[j] = CONST_CAST (char *, infiles[i].name);
5474 infiles[i].compiled = true;
5479 create_at_file (argv);
5482 for (i = 0; (int) i < n_infiles; i++)
5483 if (compile_input_file_p (&infiles[i]))
5485 store_arg (infiles[i].name, 0, 0);
5486 infiles[i].compiled = true;
5491 obstack_grow (&obstack, gcc_input_filename,
5492 input_filename_length);
5499 struct spec_path_info info;
5503 do_spec_1 ("-imultilib", 1, NULL);
5504 /* Make this a separate argument. */
5505 do_spec_1 (" ", 0, NULL);
5506 do_spec_1 (multilib_dir, 1, NULL);
5507 do_spec_1 (" ", 0, NULL);
5512 do_spec_1 ("-imultiarch", 1, NULL);
5513 /* Make this a separate argument. */
5514 do_spec_1 (" ", 0, NULL);
5515 do_spec_1 (multiarch_dir, 1, NULL);
5516 do_spec_1 (" ", 0, NULL);
5519 if (gcc_exec_prefix)
5521 do_spec_1 ("-iprefix", 1, NULL);
5522 /* Make this a separate argument. */
5523 do_spec_1 (" ", 0, NULL);
5524 do_spec_1 (gcc_exec_prefix, 1, NULL);
5525 do_spec_1 (" ", 0, NULL);
5528 if (target_system_root_changed ||
5529 (target_system_root && target_sysroot_hdrs_suffix))
5531 do_spec_1 ("-isysroot", 1, NULL);
5532 /* Make this a separate argument. */
5533 do_spec_1 (" ", 0, NULL);
5534 do_spec_1 (target_system_root, 1, NULL);
5535 if (target_sysroot_hdrs_suffix)
5536 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
5537 do_spec_1 (" ", 0, NULL);
5540 info.option = "-isystem";
5541 info.append = "include";
5542 info.append_len = strlen (info.append);
5543 info.omit_relative = false;
5544 info.separate_options = true;
5546 for_each_path (&include_prefixes, false, info.append_len,
5549 info.append = "include-fixed";
5550 if (*sysroot_hdrs_suffix_spec)
5551 info.append = concat (info.append, dir_separator_str,
5552 multilib_dir, NULL);
5553 info.append_len = strlen (info.append);
5554 for_each_path (&include_prefixes, false, info.append_len,
5561 int max = n_infiles;
5562 max += lang_specific_extra_outfiles;
5564 if (HAVE_GNU_LD && at_file_supplied)
5566 /* We are going to expand `%o' to `@FILE', where FILE
5567 is a newly-created temporary filename. The filenames
5568 that would usually be expanded in place of %o will be
5569 written to the temporary file. */
5574 /* Convert OUTFILES into a form suitable for writeargv. */
5576 /* Determine how many are non-NULL. */
5577 for (n_files = 0, i = 0; i < max; i++)
5578 n_files += outfiles[i] != NULL;
5580 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
5582 /* Copy the strings over. */
5583 for (i = 0, j = 0; i < max; i++)
5586 argv[j] = CONST_CAST (char *, outfiles[i]);
5591 create_at_file (argv);
5594 for (i = 0; i < max; i++)
5596 store_arg (outfiles[i], 0, 0);
5601 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
5606 this_is_library_file = 1;
5610 this_is_linker_script = 1;
5614 outfiles[input_file_number] = NULL;
5618 this_is_output_file = 1;
5623 unsigned int cur_index = argbuf.length ();
5624 /* Handle the {...} following the %W. */
5626 fatal_error (input_location,
5627 "spec %qs has invalid %<%%W%c%>", spec, *p);
5628 p = handle_braces (p + 1);
5632 /* If any args were output, mark the last one for deletion
5634 if (argbuf.length () != cur_index)
5635 record_temp_file (argbuf.last (), 0, 1);
5639 /* %x{OPTION} records OPTION for %X to output. */
5647 /* Skip past the option value and make a copy. */
5649 fatal_error (input_location,
5650 "spec %qs has invalid %<%%x%c%>", spec, *p);
5653 string = save_string (p1 + 1, p - p1 - 2);
5655 /* See if we already recorded this option. */
5656 FOR_EACH_VEC_ELT (linker_options, ix, opt)
5657 if (! strcmp (string, opt))
5663 /* This option is new; add it. */
5664 add_linker_option (string, strlen (string));
5669 /* Dump out the options accumulated previously using %x. */
5671 do_specs_vec (linker_options);
5674 /* Dump out the options accumulated previously using -Wa,. */
5676 do_specs_vec (assembler_options);
5679 /* Dump out the options accumulated previously using -Wp,. */
5681 do_specs_vec (preprocessor_options);
5684 /* Here are digits and numbers that just process
5685 a certain constant string as a spec. */
5688 value = do_spec_1 (cc1_spec, 0, NULL);
5694 value = do_spec_1 (cc1plus_spec, 0, NULL);
5700 value = do_spec_1 (asm_spec, 0, NULL);
5706 value = do_spec_1 (asm_final_spec, 0, NULL);
5713 const char *const spec
5714 = (input_file_compiler->cpp_spec
5715 ? input_file_compiler->cpp_spec
5717 value = do_spec_1 (spec, 0, NULL);
5724 value = do_spec_1 (endfile_spec, 0, NULL);
5730 value = do_spec_1 (link_spec, 0, NULL);
5736 value = do_spec_1 (lib_spec, 0, NULL);
5742 if (multilib_os_dir == NULL)
5743 obstack_1grow (&obstack, '.');
5745 obstack_grow (&obstack, multilib_os_dir,
5746 strlen (multilib_os_dir));
5750 value = do_spec_1 (libgcc_spec, 0, NULL);
5756 /* We assume there is a directory
5757 separator at the end of this string. */
5758 if (target_system_root)
5760 obstack_grow (&obstack, target_system_root,
5761 strlen (target_system_root));
5762 if (target_sysroot_suffix)
5763 obstack_grow (&obstack, target_sysroot_suffix,
5764 strlen (target_sysroot_suffix));
5769 value = do_spec_1 (startfile_spec, 0, NULL);
5774 /* Here we define characters other than letters and digits. */
5777 p = handle_braces (p);
5783 p = handle_spec_function (p, NULL);
5789 obstack_1grow (&obstack, '%');
5796 while (p[len] && p[len] != ' ' && p[len] != '%')
5798 suffix_subst = save_string (p - 1, len + 1);
5803 /* Henceforth ignore the option(s) matching the pattern
5809 int have_wildcard = 0;
5814 switch_option = SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC;
5816 switch_option = SWITCH_IGNORE;
5818 while (p[len] && p[len] != ' ' && p[len] != '\t')
5821 if (p[len-1] == '*')
5824 for (i = 0; i < n_switches; i++)
5825 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5826 && (have_wildcard || switches[i].part1[len] == '\0'))
5828 switches[i].live_cond |= switch_option;
5829 /* User switch be validated from validate_all_switches.
5830 when the definition is seen from the spec file.
5831 If not defined anywhere, will be rejected. */
5832 if (switches[i].known)
5833 switches[i].validated = true;
5841 if (soft_matched_part)
5843 if (soft_matched_part[0])
5844 do_spec_1 (soft_matched_part, 1, NULL);
5845 /* Only insert a space after the substitution if it is at the
5846 end of the current sequence. So if:
5848 "%{foo=*:bar%*}%{foo=*:one%*two}"
5850 matches -foo=hello then it will produce:
5852 barhello onehellotwo
5854 if (*p == 0 || *p == '}')
5855 do_spec_1 (" ", 0, NULL);
5858 /* Catch the case where a spec string contains something like
5859 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5860 hand side of the :. */
5861 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5864 /* Process a string found as the value of a spec given by name.
5865 This feature allows individual machine descriptions
5866 to add and use their own specs. */
5869 const char *name = p;
5870 struct spec_list *sl;
5873 /* The string after the S/P is the name of a spec that is to be
5875 while (*p && *p != ')')
5878 /* See if it's in the list. */
5879 for (len = p - name, sl = specs; sl; sl = sl->next)
5880 if (sl->name_len == len && !strncmp (sl->name, name, len))
5882 name = *(sl->ptr_spec);
5884 fnotice (stderr, "Processing spec (%s), which is '%s'\n",
5892 value = do_spec_1 (name, 0, NULL);
5897 /* Discard the closing paren. */
5904 error ("spec failure: unrecognized spec option %qc", c);
5910 /* Backslash: treat next character as ordinary. */
5915 /* Ordinary character: put it into the current argument. */
5916 obstack_1grow (&obstack, c);
5920 /* End of string. If we are processing a spec function, we need to
5921 end any pending argument. */
5922 if (processing_spec_function)
5928 /* Look up a spec function. */
5930 static const struct spec_function *
5931 lookup_spec_function (const char *name)
5933 const struct spec_function *sf;
5935 for (sf = static_spec_functions; sf->name != NULL; sf++)
5936 if (strcmp (sf->name, name) == 0)
5942 /* Evaluate a spec function. */
5945 eval_spec_function (const char *func, const char *args)
5947 const struct spec_function *sf;
5948 const char *funcval;
5950 /* Saved spec processing context. */
5951 vec<const_char_p> save_argbuf;
5954 int save_delete_this_arg;
5955 int save_this_is_output_file;
5956 int save_this_is_library_file;
5957 int save_input_from_pipe;
5958 int save_this_is_linker_script;
5959 const char *save_suffix_subst;
5961 int save_growing_size;
5962 void *save_growing_value = NULL;
5964 sf = lookup_spec_function (func);
5966 fatal_error (input_location, "unknown spec function %qs", func);
5968 /* Push the spec processing context. */
5969 save_argbuf = argbuf;
5971 save_arg_going = arg_going;
5972 save_delete_this_arg = delete_this_arg;
5973 save_this_is_output_file = this_is_output_file;
5974 save_this_is_library_file = this_is_library_file;
5975 save_this_is_linker_script = this_is_linker_script;
5976 save_input_from_pipe = input_from_pipe;
5977 save_suffix_subst = suffix_subst;
5979 /* If we have some object growing now, finalize it so the args and function
5980 eval proceed from a cleared context. This is needed to prevent the first
5981 constructed arg from mistakenly including the growing value. We'll push
5982 this value back on the obstack once the function evaluation is done, to
5983 restore a consistent processing context for our caller. This is fine as
5984 the address of growing objects isn't guaranteed to remain stable until
5985 they are finalized, and we expect this situation to be rare enough for
5986 the extra copy not to be an issue. */
5987 save_growing_size = obstack_object_size (&obstack);
5988 if (save_growing_size > 0)
5989 save_growing_value = obstack_finish (&obstack);
5991 /* Create a new spec processing context, and build the function
5995 if (do_spec_2 (args) < 0)
5996 fatal_error (input_location, "error in args to spec function %qs", func);
5998 /* argbuf_index is an index for the next argument to be inserted, and
5999 so contains the count of the args already inserted. */
6001 funcval = (*sf->func) (argbuf.length (),
6004 /* Pop the spec processing context. */
6006 argbuf = save_argbuf;
6008 arg_going = save_arg_going;
6009 delete_this_arg = save_delete_this_arg;
6010 this_is_output_file = save_this_is_output_file;
6011 this_is_library_file = save_this_is_library_file;
6012 this_is_linker_script = save_this_is_linker_script;
6013 input_from_pipe = save_input_from_pipe;
6014 suffix_subst = save_suffix_subst;
6016 if (save_growing_size > 0)
6017 obstack_grow (&obstack, save_growing_value, save_growing_size);
6022 /* Handle a spec function call of the form:
6026 ARGS is processed as a spec in a separate context and split into an
6027 argument vector in the normal fashion. The function returns a string
6028 containing a spec which we then process in the caller's context, or
6029 NULL if no processing is required.
6031 If RETVAL_NONNULL is not NULL, then store a bool whether function
6032 returned non-NULL. */
6035 handle_spec_function (const char *p, bool *retval_nonnull)
6038 const char *endp, *funcval;
6041 processing_spec_function++;
6043 /* Get the function name. */
6044 for (endp = p; *endp != '\0'; endp++)
6046 if (*endp == '(') /* ) */
6048 /* Only allow [A-Za-z0-9], -, and _ in function names. */
6049 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
6050 fatal_error (input_location, "malformed spec function name");
6052 if (*endp != '(') /* ) */
6053 fatal_error (input_location, "no arguments for spec function");
6054 func = save_string (p, endp - p);
6057 /* Get the arguments. */
6058 for (count = 0; *endp != '\0'; endp++)
6067 else if (*endp == '(') /* ) */
6072 fatal_error (input_location, "malformed spec function arguments");
6073 args = save_string (p, endp - p);
6076 /* p now points to just past the end of the spec function expression. */
6078 funcval = eval_spec_function (func, args);
6079 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
6082 *retval_nonnull = funcval != NULL;
6087 processing_spec_function--;
6092 /* Inline subroutine of handle_braces. Returns true if the current
6093 input suffix matches the atom bracketed by ATOM and END_ATOM. */
6095 input_suffix_matches (const char *atom, const char *end_atom)
6097 return (input_suffix
6098 && !strncmp (input_suffix, atom, end_atom - atom)
6099 && input_suffix[end_atom - atom] == '\0');
6102 /* Subroutine of handle_braces. Returns true if the current
6103 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
6105 input_spec_matches (const char *atom, const char *end_atom)
6107 return (input_file_compiler
6108 && input_file_compiler->suffix
6109 && input_file_compiler->suffix[0] != '\0'
6110 && !strncmp (input_file_compiler->suffix + 1, atom,
6112 && input_file_compiler->suffix[end_atom - atom + 1] == '\0');
6115 /* Subroutine of handle_braces. Returns true if a switch
6116 matching the atom bracketed by ATOM and END_ATOM appeared on the
6119 switch_matches (const char *atom, const char *end_atom, int starred)
6122 int len = end_atom - atom;
6123 int plen = starred ? len : -1;
6125 for (i = 0; i < n_switches; i++)
6126 if (!strncmp (switches[i].part1, atom, len)
6127 && (starred || switches[i].part1[len] == '\0')
6128 && check_live_switch (i, plen))
6131 /* Check if a switch with separated form matching the atom.
6132 We check -D and -U switches. */
6133 else if (switches[i].args != 0)
6135 if ((*switches[i].part1 == 'D' || *switches[i].part1 == 'U')
6136 && *switches[i].part1 == atom[0])
6138 if (!strncmp (switches[i].args[0], &atom[1], len - 1)
6139 && (starred || (switches[i].part1[1] == '\0'
6140 && switches[i].args[0][len - 1] == '\0'))
6141 && check_live_switch (i, (starred ? 1 : -1)))
6149 /* Inline subroutine of handle_braces. Mark all of the switches which
6150 match ATOM (extends to END_ATOM; STARRED indicates whether there
6151 was a star after the atom) for later processing. */
6153 mark_matching_switches (const char *atom, const char *end_atom, int starred)
6156 int len = end_atom - atom;
6157 int plen = starred ? len : -1;
6159 for (i = 0; i < n_switches; i++)
6160 if (!strncmp (switches[i].part1, atom, len)
6161 && (starred || switches[i].part1[len] == '\0')
6162 && check_live_switch (i, plen))
6163 switches[i].ordering = 1;
6166 /* Inline subroutine of handle_braces. Process all the currently
6167 marked switches through give_switch, and clear the marks. */
6169 process_marked_switches (void)
6173 for (i = 0; i < n_switches; i++)
6174 if (switches[i].ordering == 1)
6176 switches[i].ordering = 0;
6181 /* Handle a %{ ... } construct. P points just inside the leading {.
6182 Returns a pointer one past the end of the brace block, or 0
6183 if we call do_spec_1 and that returns -1. */
6186 handle_braces (const char *p)
6188 const char *atom, *end_atom;
6189 const char *d_atom = NULL, *d_end_atom = NULL;
6190 const char *orig = p;
6198 bool a_must_be_last = false;
6199 bool ordered_set = false;
6200 bool disjunct_set = false;
6201 bool disj_matched = false;
6202 bool disj_starred = true;
6203 bool n_way_choice = false;
6204 bool n_way_matched = false;
6206 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
6213 /* Scan one "atom" (S in the description above of %{}, possibly
6214 with '!', '.', '@', ',', or '*' modifiers). */
6216 a_is_suffix = false;
6217 a_is_starred = false;
6218 a_is_negated = false;
6219 a_is_spectype = false;
6223 p++, a_is_negated = true;
6226 if (*p == '%' && p[1] == ':')
6230 p = handle_spec_function (p + 2, &a_matched);
6235 p++, a_is_suffix = true;
6237 p++, a_is_spectype = true;
6240 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
6241 || *p == ',' || *p == '.' || *p == '@')
6246 p++, a_is_starred = 1;
6253 /* Substitute the switch(es) indicated by the current atom. */
6255 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
6256 || a_is_spectype || atom == end_atom)
6259 mark_matching_switches (atom, end_atom, a_is_starred);
6262 process_marked_switches ();
6266 /* Substitute some text if the current atom appears as a switch
6268 disjunct_set = true;
6272 if (atom && atom == end_atom)
6274 if (!n_way_choice || disj_matched || *p == '|'
6275 || a_is_negated || a_is_suffix || a_is_spectype
6279 /* An empty term may appear as the last choice of an
6280 N-way choice set; it means "otherwise". */
6281 a_must_be_last = true;
6282 disj_matched = !n_way_matched;
6283 disj_starred = false;
6287 if ((a_is_suffix || a_is_spectype) && a_is_starred)
6291 disj_starred = false;
6293 /* Don't bother testing this atom if we already have a
6295 if (!disj_matched && !n_way_matched)
6298 /* a_matched is already set by handle_spec_function. */;
6299 else if (a_is_suffix)
6300 a_matched = input_suffix_matches (atom, end_atom);
6301 else if (a_is_spectype)
6302 a_matched = input_spec_matches (atom, end_atom);
6304 a_matched = switch_matches (atom, end_atom, a_is_starred);
6306 if (a_matched != a_is_negated)
6308 disj_matched = true;
6310 d_end_atom = end_atom;
6317 /* Found the body, that is, the text to substitute if the
6318 current disjunction matches. */
6319 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
6320 disj_matched && !n_way_matched);
6324 /* If we have an N-way choice, reset state for the next
6328 n_way_choice = true;
6329 n_way_matched |= disj_matched;
6330 disj_matched = false;
6331 disj_starred = true;
6332 d_atom = d_end_atom = NULL;
6341 while (*p++ != '}');
6346 fatal_error (input_location, "braced spec %qs is invalid at %qc", orig, *p);
6351 /* Subroutine of handle_braces. Scan and process a brace substitution body
6352 (X in the description of %{} syntax). P points one past the colon;
6353 ATOM and END_ATOM bracket the first atom which was found to be true
6354 (present) in the current disjunction; STARRED indicates whether all
6355 the atoms in the current disjunction were starred (for syntax validation);
6356 MATCHED indicates whether the disjunction matched or not, and therefore
6357 whether or not the body is to be processed through do_spec_1 or just
6358 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
6362 process_brace_body (const char *p, const char *atom, const char *end_atom,
6363 int starred, int matched)
6365 const char *body, *end_body;
6366 unsigned int nesting_level;
6367 bool have_subst = false;
6369 /* Locate the closing } or ;, honoring nested braces.
6370 Trim trailing whitespace. */
6379 if (!--nesting_level)
6382 else if (*p == ';' && nesting_level == 1)
6384 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
6386 else if (*p == '\0')
6392 while (end_body[-1] == ' ' || end_body[-1] == '\t')
6395 if (have_subst && !starred)
6400 /* Copy the substitution body to permanent storage and execute it.
6401 If have_subst is false, this is a simple matter of running the
6402 body through do_spec_1... */
6403 char *string = save_string (body, end_body - body);
6406 if (do_spec_1 (string, 0, NULL) < 0)
6414 /* ... but if have_subst is true, we have to process the
6415 body once for each matching switch, with %* set to the
6416 variant part of the switch. */
6417 unsigned int hard_match_len = end_atom - atom;
6420 for (i = 0; i < n_switches; i++)
6421 if (!strncmp (switches[i].part1, atom, hard_match_len)
6422 && check_live_switch (i, hard_match_len))
6424 if (do_spec_1 (string, 0,
6425 &switches[i].part1[hard_match_len]) < 0)
6430 /* Pass any arguments this switch has. */
6432 suffix_subst = NULL;
6441 fatal_error (input_location, "braced spec body %qs is invalid", body);
6444 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
6445 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
6446 spec, or -1 if either exact match or %* is used.
6448 A -O switch is obsoleted by a later -O switch. A -f, -g, -m, or -W switch
6449 whose value does not begin with "no-" is obsoleted by the same value
6450 with the "no-", similarly for a switch with the "no-" prefix. */
6453 check_live_switch (int switchnum, int prefix_length)
6455 const char *name = switches[switchnum].part1;
6458 /* If we already processed this switch and determined if it was
6459 live or not, return our past determination. */
6460 if (switches[switchnum].live_cond != 0)
6461 return ((switches[switchnum].live_cond & SWITCH_LIVE) != 0
6462 && (switches[switchnum].live_cond & SWITCH_FALSE) == 0
6463 && (switches[switchnum].live_cond & SWITCH_IGNORE_PERMANENTLY)
6466 /* In the common case of {<at-most-one-letter>*}, a negating
6467 switch would always match, so ignore that case. We will just
6468 send the conflicting switches to the compiler phase. */
6469 if (prefix_length >= 0 && prefix_length <= 1)
6472 /* Now search for duplicate in a manner that depends on the name. */
6476 for (i = switchnum + 1; i < n_switches; i++)
6477 if (switches[i].part1[0] == 'O')
6479 switches[switchnum].validated = true;
6480 switches[switchnum].live_cond = SWITCH_FALSE;
6485 case 'W': case 'f': case 'm': case 'g':
6486 if (! strncmp (name + 1, "no-", 3))
6488 /* We have Xno-YYY, search for XYYY. */
6489 for (i = switchnum + 1; i < n_switches; i++)
6490 if (switches[i].part1[0] == name[0]
6491 && ! strcmp (&switches[i].part1[1], &name[4]))
6493 /* --specs are validated with the validate_switches mechanism. */
6494 if (switches[switchnum].known)
6495 switches[switchnum].validated = true;
6496 switches[switchnum].live_cond = SWITCH_FALSE;
6502 /* We have XYYY, search for Xno-YYY. */
6503 for (i = switchnum + 1; i < n_switches; i++)
6504 if (switches[i].part1[0] == name[0]
6505 && switches[i].part1[1] == 'n'
6506 && switches[i].part1[2] == 'o'
6507 && switches[i].part1[3] == '-'
6508 && !strcmp (&switches[i].part1[4], &name[1]))
6510 /* --specs are validated with the validate_switches mechanism. */
6511 if (switches[switchnum].known)
6512 switches[switchnum].validated = true;
6513 switches[switchnum].live_cond = SWITCH_FALSE;
6520 /* Otherwise the switch is live. */
6521 switches[switchnum].live_cond |= SWITCH_LIVE;
6525 /* Pass a switch to the current accumulating command
6526 in the same form that we received it.
6527 SWITCHNUM identifies the switch; it is an index into
6528 the vector of switches gcc received, which is `switches'.
6529 This cannot fail since it never finishes a command line.
6531 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
6534 give_switch (int switchnum, int omit_first_word)
6536 if ((switches[switchnum].live_cond & SWITCH_IGNORE) != 0)
6539 if (!omit_first_word)
6541 do_spec_1 ("-", 0, NULL);
6542 do_spec_1 (switches[switchnum].part1, 1, NULL);
6545 if (switches[switchnum].args != 0)
6548 for (p = switches[switchnum].args; *p; p++)
6550 const char *arg = *p;
6552 do_spec_1 (" ", 0, NULL);
6555 unsigned length = strlen (arg);
6558 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
6559 if (arg[length] == '.')
6561 (CONST_CAST (char *, arg))[length] = 0;
6565 do_spec_1 (arg, 1, NULL);
6567 (CONST_CAST (char *, arg))[length] = '.';
6568 do_spec_1 (suffix_subst, 1, NULL);
6571 do_spec_1 (arg, 1, NULL);
6575 do_spec_1 (" ", 0, NULL);
6576 switches[switchnum].validated = true;
6579 /* Print GCC configuration (e.g. version, thread model, target,
6580 configuration_arguments) to a given FILE. */
6583 print_configuration (FILE *file)
6588 fnotice (file, "Target: %s\n", spec_machine);
6589 fnotice (file, "Configured with: %s\n", configuration_arguments);
6591 #ifdef THREAD_MODEL_SPEC
6592 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6593 but there's no point in doing all this processing just to get
6594 thread_model back. */
6595 obstack_init (&obstack);
6596 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6597 obstack_1grow (&obstack, '\0');
6598 thrmod = XOBFINISH (&obstack, const char *);
6600 thrmod = thread_model;
6603 fnotice (file, "Thread model: %s\n", thrmod);
6605 /* compiler_version is truncated at the first space when initialized
6606 from version string, so truncate version_string at the first space
6607 before comparing. */
6608 for (n = 0; version_string[n]; n++)
6609 if (version_string[n] == ' ')
6612 if (! strncmp (version_string, compiler_version, n)
6613 && compiler_version[n] == 0)
6614 fnotice (file, "gcc version %s %s\n", version_string,
6617 fnotice (file, "gcc driver version %s %sexecuting gcc version %s\n",
6618 version_string, pkgversion_string, compiler_version);
6622 #define RETRY_ICE_ATTEMPTS 3
6624 /* Returns true if FILE1 and FILE2 contain equivalent data, 0 otherwise. */
6627 files_equal_p (char *file1, char *file2)
6629 struct stat st1, st2;
6632 const int bufsize = 8192;
6633 char *buf = XNEWVEC (char, bufsize);
6635 fd1 = open (file1, O_RDONLY);
6636 fd2 = open (file2, O_RDONLY);
6638 if (fd1 < 0 || fd2 < 0)
6641 if (fstat (fd1, &st1) < 0 || fstat (fd2, &st2) < 0)
6644 if (st1.st_size != st2.st_size)
6647 for (n = st1.st_size; n; n -= len)
6650 if ((int) len > bufsize / 2)
6653 if (read (fd1, buf, len) != (int) len
6654 || read (fd2, buf + bufsize / 2, len) != (int) len)
6659 if (memcmp (buf, buf + bufsize / 2, len) != 0)
6676 /* Check that compiler's output doesn't differ across runs.
6677 TEMP_STDOUT_FILES and TEMP_STDERR_FILES are arrays of files, containing
6678 stdout and stderr for each compiler run. Return true if all of
6679 TEMP_STDOUT_FILES and TEMP_STDERR_FILES are equivalent. */
6682 check_repro (char **temp_stdout_files, char **temp_stderr_files)
6685 for (i = 0; i < RETRY_ICE_ATTEMPTS - 2; ++i)
6687 if (!files_equal_p (temp_stdout_files[i], temp_stdout_files[i + 1])
6688 || !files_equal_p (temp_stderr_files[i], temp_stderr_files[i + 1]))
6690 fnotice (stderr, "The bug is not reproducible, so it is"
6691 " likely a hardware or OS problem.\n");
6695 return i == RETRY_ICE_ATTEMPTS - 2;
6698 enum attempt_status {
6699 ATTEMPT_STATUS_FAIL_TO_RUN,
6700 ATTEMPT_STATUS_SUCCESS,
6705 /* Run compiler with arguments NEW_ARGV to reproduce the ICE, storing stdout
6706 to OUT_TEMP and stderr to ERR_TEMP. If APPEND is TRUE, append to OUT_TEMP
6707 and ERR_TEMP instead of truncating. If EMIT_SYSTEM_INFO is TRUE, also write
6708 GCC configuration into to ERR_TEMP. Return ATTEMPT_STATUS_FAIL_TO_RUN if
6709 compiler failed to run, ATTEMPT_STATUS_ICE if compiled ICE-ed and
6710 ATTEMPT_STATUS_SUCCESS otherwise. */
6712 static enum attempt_status
6713 run_attempt (const char **new_argv, const char *out_temp,
6714 const char *err_temp, int emit_system_info, int append)
6717 if (emit_system_info)
6719 FILE *file_out = fopen (err_temp, "a");
6720 print_configuration (file_out);
6721 fputs ("\n", file_out);
6727 struct pex_obj *pex;
6729 int pex_flags = PEX_USE_PIPES | PEX_LAST;
6730 enum attempt_status status = ATTEMPT_STATUS_FAIL_TO_RUN;
6733 pex_flags |= PEX_STDOUT_APPEND | PEX_STDERR_APPEND;
6735 pex = pex_init (PEX_USE_PIPES, new_argv[0], NULL);
6737 fatal_error (input_location, "pex_init failed: %m");
6739 errmsg = pex_run (pex, pex_flags, new_argv[0],
6740 CONST_CAST2 (char *const *, const char **, &new_argv[1]), out_temp,
6745 fatal_error (input_location, errmsg);
6749 pfatal_with_name (errmsg);
6753 if (!pex_get_status (pex, 1, &exit_status))
6756 switch (WEXITSTATUS (exit_status))
6759 status = ATTEMPT_STATUS_ICE;
6762 case SUCCESS_EXIT_CODE:
6763 status = ATTEMPT_STATUS_SUCCESS;
6775 /* This routine reads lines from IN file, adds C++ style comments
6776 at the begining of each line and writes result into OUT. */
6779 insert_comments (const char *file_in, const char *file_out)
6781 FILE *in = fopen (file_in, "rb");
6782 FILE *out = fopen (file_out, "wb");
6785 bool add_comment = true;
6786 while (fgets (line, sizeof (line), in))
6791 add_comment = strchr (line, '\n') != NULL;
6798 /* This routine adds preprocessed source code into the given ERR_FILE.
6799 To do this, it adds "-E" to NEW_ARGV and execute RUN_ATTEMPT routine to
6800 add information in report file. RUN_ATTEMPT should return
6801 ATTEMPT_STATUS_SUCCESS, in other case we cannot generate the report. */
6804 do_report_bug (const char **new_argv, const int nargs,
6805 char **out_file, char **err_file)
6808 int fd = open (*out_file, O_RDWR | O_APPEND);
6811 write (fd, "\n//", 3);
6812 for (i = 0; i < nargs; i++)
6815 write (fd, new_argv[i], strlen (new_argv[i]));
6817 write (fd, "\n\n", 2);
6819 new_argv[nargs] = "-E";
6820 new_argv[nargs + 1] = NULL;
6822 status = run_attempt (new_argv, *out_file, *err_file, 0, 1);
6824 if (status == ATTEMPT_STATUS_SUCCESS)
6826 fnotice (stderr, "Preprocessed source stored into %s file,"
6827 " please attach this to your bugreport.\n", *out_file);
6828 /* Make sure it is not deleted. */
6834 /* Try to reproduce ICE. If bug is reproducible, generate report .err file
6835 containing GCC configuration, backtrace, compiler's command line options
6836 and preprocessed source code. */
6839 try_generate_repro (const char **argv)
6841 int i, nargs, out_arg = -1, quiet = 0, attempt;
6842 const char **new_argv;
6843 char *temp_files[RETRY_ICE_ATTEMPTS * 2];
6844 char **temp_stdout_files = &temp_files[0];
6845 char **temp_stderr_files = &temp_files[RETRY_ICE_ATTEMPTS];
6847 if (gcc_input_filename == NULL || ! strcmp (gcc_input_filename, "-"))
6850 for (nargs = 0; argv[nargs] != NULL; ++nargs)
6851 /* Only retry compiler ICEs, not preprocessor ones. */
6852 if (! strcmp (argv[nargs], "-E"))
6854 else if (argv[nargs][0] == '-' && argv[nargs][1] == 'o')
6861 /* If the compiler is going to output any time information,
6862 it might varry between invocations. */
6863 else if (! strcmp (argv[nargs], "-quiet"))
6865 else if (! strcmp (argv[nargs], "-ftime-report"))
6868 if (out_arg == -1 || !quiet)
6871 memset (temp_files, '\0', sizeof (temp_files));
6872 new_argv = XALLOCAVEC (const char *, nargs + 4);
6873 memcpy (new_argv, argv, (nargs + 1) * sizeof (const char *));
6874 new_argv[nargs++] = "-frandom-seed=0";
6875 new_argv[nargs++] = "-fdump-noaddr";
6876 new_argv[nargs] = NULL;
6877 if (new_argv[out_arg][2] == '\0')
6878 new_argv[out_arg + 1] = "-";
6880 new_argv[out_arg] = "-o-";
6883 for (attempt = 0; attempt < RETRY_ICE_ATTEMPTS; ++attempt)
6885 int emit_system_info = 0;
6887 temp_stdout_files[attempt] = make_temp_file (".out");
6888 temp_stderr_files[attempt] = make_temp_file (".err");
6890 if (attempt == RETRY_ICE_ATTEMPTS - 1)
6893 emit_system_info = 1;
6896 status = run_attempt (new_argv, temp_stdout_files[attempt],
6897 temp_stderr_files[attempt], emit_system_info,
6900 if (status != ATTEMPT_STATUS_ICE)
6902 fnotice (stderr, "The bug is not reproducible, so it is"
6903 " likely a hardware or OS problem.\n");
6908 if (!check_repro (temp_stdout_files, temp_stderr_files))
6912 /* Insert commented out backtrace into report file. */
6913 char **stderr_commented = &temp_stdout_files[RETRY_ICE_ATTEMPTS - 1];
6914 insert_comments (temp_stderr_files[RETRY_ICE_ATTEMPTS - 1],
6917 /* In final attempt we append compiler options and preprocesssed code to last
6918 generated .out file with configuration and backtrace. */
6919 char **output = &temp_stdout_files[RETRY_ICE_ATTEMPTS - 1];
6920 do_report_bug (new_argv, nargs, stderr_commented, output);
6924 for (i = 0; i < RETRY_ICE_ATTEMPTS * 2; i++)
6927 unlink (temp_stdout_files[i]);
6928 free (temp_stdout_files[i]);
6932 /* Search for a file named NAME trying various prefixes including the
6933 user's -B prefix and some standard ones.
6934 Return the absolute file name found. If nothing is found, return NAME. */
6937 find_file (const char *name)
6939 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true);
6940 return newname ? newname : name;
6943 /* Determine whether a directory exists. If LINKER, return 0 for
6944 certain fixed names not needed by the linker. */
6947 is_directory (const char *path1, bool linker)
6954 /* Ensure the string ends with "/.". The resulting path will be a
6955 directory even if the given path is a symbolic link. */
6956 len1 = strlen (path1);
6957 path = (char *) alloca (3 + len1);
6958 memcpy (path, path1, len1);
6960 if (!IS_DIR_SEPARATOR (cp[-1]))
6961 *cp++ = DIR_SEPARATOR;
6965 /* Exclude directories that the linker is known to search. */
6967 && IS_DIR_SEPARATOR (path[0])
6969 && filename_ncmp (path + 1, "lib", 3) == 0)
6971 && filename_ncmp (path + 1, "usr", 3) == 0
6972 && IS_DIR_SEPARATOR (path[4])
6973 && filename_ncmp (path + 5, "lib", 3) == 0)))
6976 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
6979 /* Set up the various global variables to indicate that we're processing
6980 the input file named FILENAME. */
6983 set_input (const char *filename)
6987 gcc_input_filename = filename;
6988 input_filename_length = strlen (gcc_input_filename);
6989 input_basename = lbasename (gcc_input_filename);
6991 /* Find a suffix starting with the last period,
6992 and set basename_length to exclude that suffix. */
6993 basename_length = strlen (input_basename);
6994 suffixed_basename_length = basename_length;
6995 p = input_basename + basename_length;
6996 while (p != input_basename && *p != '.')
6998 if (*p == '.' && p != input_basename)
7000 basename_length = p - input_basename;
7001 input_suffix = p + 1;
7006 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
7007 we will need to do a stat on the gcc_input_filename. The
7008 INPUT_STAT_SET signals that the stat is needed. */
7012 /* On fatal signals, delete all the temporary files. */
7015 fatal_signal (int signum)
7017 signal (signum, SIG_DFL);
7018 delete_failure_queue ();
7019 delete_temp_files ();
7020 /* Get the same signal again, this time not handled,
7021 so its normal effect occurs. */
7022 kill (getpid (), signum);
7025 /* Compare the contents of the two files named CMPFILE[0] and
7026 CMPFILE[1]. Return zero if they're identical, nonzero
7030 compare_files (char *cmpfile[])
7033 FILE *temp[2] = { NULL, NULL };
7039 void *map[2] = { NULL, NULL };
7041 for (i = 0; i < 2; i++)
7045 if (stat (cmpfile[i], &st) < 0 || !S_ISREG (st.st_mode))
7047 error ("%s: could not determine length of compare-debug file %s",
7048 gcc_input_filename, cmpfile[i]);
7053 length[i] = st.st_size;
7056 if (!ret && length[0] != length[1])
7058 error ("%s: -fcompare-debug failure (length)", gcc_input_filename);
7063 for (i = 0; i < 2; i++)
7065 int fd = open (cmpfile[i], O_RDONLY);
7068 error ("%s: could not open compare-debug file %s",
7069 gcc_input_filename, cmpfile[i]);
7074 map[i] = mmap (NULL, length[i], PROT_READ, MAP_PRIVATE, fd, 0);
7077 if (map[i] == (void *) MAP_FAILED)
7086 if (memcmp (map[0], map[1], length[0]) != 0)
7088 error ("%s: -fcompare-debug failure", gcc_input_filename);
7093 for (i = 0; i < 2; i++)
7095 munmap ((caddr_t) map[i], length[i]);
7104 for (i = 0; i < 2; i++)
7106 temp[i] = fopen (cmpfile[i], "r");
7109 error ("%s: could not open compare-debug file %s",
7110 gcc_input_filename, cmpfile[i]);
7116 if (!ret && temp[0] && temp[1])
7120 c0 = fgetc (temp[0]);
7121 c1 = fgetc (temp[1]);
7125 error ("%s: -fcompare-debug failure",
7126 gcc_input_filename);
7135 for (i = 1; i >= 0; i--)
7144 driver::driver (bool can_finalize, bool debug) :
7145 explicit_link_files (NULL),
7146 decoded_options (NULL),
7147 m_option_suggestions (NULL)
7149 env.init (can_finalize, debug);
7154 XDELETEVEC (explicit_link_files);
7155 XDELETEVEC (decoded_options);
7156 if (m_option_suggestions)
7160 FOR_EACH_VEC_ELT (*m_option_suggestions, i, str)
7162 delete m_option_suggestions;
7166 /* driver::main is implemented as a series of driver:: method calls. */
7169 driver::main (int argc, char **argv)
7173 set_progname (argv[0]);
7174 expand_at_files (&argc, &argv);
7175 decode_argv (argc, const_cast <const char **> (argv));
7176 global_initializations ();
7177 build_multilib_strings ();
7179 putenv_COLLECT_GCC (argv[0]);
7180 maybe_putenv_COLLECT_LTO_WRAPPER ();
7181 maybe_putenv_OFFLOAD_TARGETS ();
7182 handle_unrecognized_options ();
7184 if (!maybe_print_and_exit ())
7187 early_exit = prepare_infiles ();
7189 return get_exit_code ();
7191 do_spec_on_infiles ();
7192 maybe_run_linker (argv[0]);
7194 return get_exit_code ();
7197 /* Locate the final component of argv[0] after any leading path, and set
7198 the program name accordingly. */
7201 driver::set_progname (const char *argv0) const
7203 const char *p = argv0 + strlen (argv0);
7204 while (p != argv0 && !IS_DIR_SEPARATOR (p[-1]))
7208 xmalloc_set_program_name (progname);
7211 /* Expand any @ files within the command-line args,
7212 setting at_file_supplied if any were expanded. */
7215 driver::expand_at_files (int *argc, char ***argv) const
7217 char **old_argv = *argv;
7219 expandargv (argc, argv);
7221 /* Determine if any expansions were made. */
7222 if (*argv != old_argv)
7223 at_file_supplied = true;
7226 /* Decode the command-line arguments from argc/argv into the
7227 decoded_options array. */
7230 driver::decode_argv (int argc, const char **argv)
7232 /* Register the language-independent parameters. */
7233 global_init_params ();
7236 init_opts_obstack ();
7237 init_options_struct (&global_options, &global_options_set);
7239 decode_cmdline_options_to_array (argc, argv,
7241 &decoded_options, &decoded_options_count);
7244 /* Perform various initializations and setup. */
7247 driver::global_initializations ()
7249 /* Unlock the stdio streams. */
7250 unlock_std_streams ();
7252 gcc_init_libintl ();
7254 diagnostic_initialize (global_dc, 0);
7255 diagnostic_color_init (global_dc);
7257 #ifdef GCC_DRIVER_HOST_INITIALIZATION
7258 /* Perform host dependent initialization when needed. */
7259 GCC_DRIVER_HOST_INITIALIZATION;
7262 if (atexit (delete_temp_files) != 0)
7263 fatal_error (input_location, "atexit failed");
7265 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
7266 signal (SIGINT, fatal_signal);
7268 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
7269 signal (SIGHUP, fatal_signal);
7271 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
7272 signal (SIGTERM, fatal_signal);
7274 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
7275 signal (SIGPIPE, fatal_signal);
7278 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
7279 receive the signal. A different setting is inheritable */
7280 signal (SIGCHLD, SIG_DFL);
7283 /* Parsing and gimplification sometimes need quite large stack.
7284 Increase stack size limits if possible. */
7285 stack_limit_increase (64 * 1024 * 1024);
7287 /* Allocate the argument vector. */
7290 obstack_init (&obstack);
7293 /* Build multilib_select, et. al from the separate lines that make up each
7294 multilib selection. */
7297 driver::build_multilib_strings () const
7301 const char *const *q = multilib_raw;
7304 obstack_init (&multilib_obstack);
7305 while ((p = *q++) != (char *) 0)
7306 obstack_grow (&multilib_obstack, p, strlen (p));
7308 obstack_1grow (&multilib_obstack, 0);
7309 multilib_select = XOBFINISH (&multilib_obstack, const char *);
7311 q = multilib_matches_raw;
7312 while ((p = *q++) != (char *) 0)
7313 obstack_grow (&multilib_obstack, p, strlen (p));
7315 obstack_1grow (&multilib_obstack, 0);
7316 multilib_matches = XOBFINISH (&multilib_obstack, const char *);
7318 q = multilib_exclusions_raw;
7319 while ((p = *q++) != (char *) 0)
7320 obstack_grow (&multilib_obstack, p, strlen (p));
7322 obstack_1grow (&multilib_obstack, 0);
7323 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *);
7325 q = multilib_reuse_raw;
7326 while ((p = *q++) != (char *) 0)
7327 obstack_grow (&multilib_obstack, p, strlen (p));
7329 obstack_1grow (&multilib_obstack, 0);
7330 multilib_reuse = XOBFINISH (&multilib_obstack, const char *);
7333 for (size_t i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
7336 obstack_1grow (&multilib_obstack, ' ');
7337 obstack_grow (&multilib_obstack,
7338 multilib_defaults_raw[i],
7339 strlen (multilib_defaults_raw[i]));
7343 obstack_1grow (&multilib_obstack, 0);
7344 multilib_defaults = XOBFINISH (&multilib_obstack, const char *);
7348 /* Set up the spec-handling machinery. */
7351 driver::set_up_specs () const
7353 const char *spec_machine_suffix;
7357 #ifdef INIT_ENVIRONMENT
7358 /* Set up any other necessary machine specific environment variables. */
7359 xputenv (INIT_ENVIRONMENT);
7362 /* Make a table of what switches there are (switches, n_switches).
7363 Make a table of specified input files (infiles, n_infiles).
7364 Decode switches that are handled locally. */
7366 process_command (decoded_options_count, decoded_options);
7368 /* Initialize the vector of specs to just the default.
7369 This means one element containing 0s, as a terminator. */
7371 compilers = XNEWVAR (struct compiler, sizeof default_compilers);
7372 memcpy (compilers, default_compilers, sizeof default_compilers);
7373 n_compilers = n_default_compilers;
7375 /* Read specs from a file if there is one. */
7377 machine_suffix = concat (spec_host_machine, dir_separator_str, spec_version,
7378 accel_dir_suffix, dir_separator_str, NULL);
7379 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
7381 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true);
7382 /* Read the specs file unless it is a default one. */
7383 if (specs_file != 0 && strcmp (specs_file, "specs"))
7384 read_specs (specs_file, true, false);
7388 #ifdef ACCEL_COMPILER
7389 spec_machine_suffix = machine_suffix;
7391 spec_machine_suffix = just_machine_suffix;
7394 /* We need to check standard_exec_prefix/spec_machine_suffix/specs
7395 for any override of as, ld and libraries. */
7396 specs_file = (char *) alloca (strlen (standard_exec_prefix)
7397 + strlen (spec_machine_suffix) + sizeof ("specs"));
7398 strcpy (specs_file, standard_exec_prefix);
7399 strcat (specs_file, spec_machine_suffix);
7400 strcat (specs_file, "specs");
7401 if (access (specs_file, R_OK) == 0)
7402 read_specs (specs_file, true, false);
7404 /* Process any configure-time defaults specified for the command line
7405 options, via OPTION_DEFAULT_SPECS. */
7406 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
7407 do_option_spec (option_default_specs[i].name,
7408 option_default_specs[i].spec);
7410 /* Process DRIVER_SELF_SPECS, adding any new options to the end
7411 of the command line. */
7413 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
7414 do_self_spec (driver_self_specs[i]);
7416 /* If not cross-compiling, look for executables in the standard
7418 if (*cross_compile == '0')
7420 if (*md_exec_prefix)
7422 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
7423 PREFIX_PRIORITY_LAST, 0, 0);
7427 /* Process sysroot_suffix_spec. */
7428 if (*sysroot_suffix_spec != 0
7429 && !no_sysroot_suffix
7430 && do_spec_2 (sysroot_suffix_spec) == 0)
7432 if (argbuf.length () > 1)
7433 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
7434 else if (argbuf.length () == 1)
7435 target_sysroot_suffix = xstrdup (argbuf.last ());
7438 #ifdef HAVE_LD_SYSROOT
7439 /* Pass the --sysroot option to the linker, if it supports that. If
7440 there is a sysroot_suffix_spec, it has already been processed by
7441 this point, so target_system_root really is the system root we
7443 if (target_system_root)
7445 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
7446 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
7447 set_spec ("link", XOBFINISH (&obstack, const char *), false);
7451 /* Process sysroot_hdrs_suffix_spec. */
7452 if (*sysroot_hdrs_suffix_spec != 0
7453 && !no_sysroot_suffix
7454 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
7456 if (argbuf.length () > 1)
7457 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
7458 else if (argbuf.length () == 1)
7459 target_sysroot_hdrs_suffix = xstrdup (argbuf.last ());
7462 /* Look for startfiles in the standard places. */
7463 if (*startfile_prefix_spec != 0
7464 && do_spec_2 (startfile_prefix_spec) == 0
7465 && do_spec_1 (" ", 0, NULL) == 0)
7469 FOR_EACH_VEC_ELT (argbuf, ndx, arg)
7470 add_sysrooted_prefix (&startfile_prefixes, arg, "BINUTILS",
7471 PREFIX_PRIORITY_LAST, 0, 1);
7473 /* We should eventually get rid of all these and stick to
7474 startfile_prefix_spec exclusively. */
7475 else if (*cross_compile == '0' || target_system_root)
7477 if (*md_startfile_prefix)
7478 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
7479 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
7481 if (*md_startfile_prefix_1)
7482 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
7483 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
7485 /* If standard_startfile_prefix is relative, base it on
7486 standard_exec_prefix. This lets us move the installed tree
7487 as a unit. If GCC_EXEC_PREFIX is defined, base
7488 standard_startfile_prefix on that as well.
7490 If the prefix is relative, only search it for native compilers;
7491 otherwise we will search a directory containing host libraries. */
7492 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
7493 add_sysrooted_prefix (&startfile_prefixes,
7494 standard_startfile_prefix, "BINUTILS",
7495 PREFIX_PRIORITY_LAST, 0, 1);
7496 else if (*cross_compile == '0')
7498 add_prefix (&startfile_prefixes,
7499 concat (gcc_exec_prefix
7500 ? gcc_exec_prefix : standard_exec_prefix,
7502 standard_startfile_prefix, NULL),
7503 NULL, PREFIX_PRIORITY_LAST, 0, 1);
7506 /* Sysrooted prefixes are relocated because target_system_root is
7507 also relocated by gcc_exec_prefix. */
7508 if (*standard_startfile_prefix_1)
7509 add_sysrooted_prefix (&startfile_prefixes,
7510 standard_startfile_prefix_1, "BINUTILS",
7511 PREFIX_PRIORITY_LAST, 0, 1);
7512 if (*standard_startfile_prefix_2)
7513 add_sysrooted_prefix (&startfile_prefixes,
7514 standard_startfile_prefix_2, "BINUTILS",
7515 PREFIX_PRIORITY_LAST, 0, 1);
7518 /* Process any user specified specs in the order given on the command
7520 for (struct user_specs *uptr = user_specs_head; uptr; uptr = uptr->next)
7522 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
7524 read_specs (filename ? filename : uptr->filename, false, true);
7527 /* Process any user self specs. */
7529 struct spec_list *sl;
7530 for (sl = specs; sl; sl = sl->next)
7531 if (sl->name_len == sizeof "self_spec" - 1
7532 && !strcmp (sl->name, "self_spec"))
7533 do_self_spec (*sl->ptr_spec);
7538 enum save_temps save;
7540 if (!compare_debug_second)
7542 n_switches_debug_check[1] = n_switches;
7543 n_switches_alloc_debug_check[1] = n_switches_alloc;
7544 switches_debug_check[1] = XDUPVEC (struct switchstr, switches,
7547 do_self_spec ("%:compare-debug-self-opt()");
7548 n_switches_debug_check[0] = n_switches;
7549 n_switches_alloc_debug_check[0] = n_switches_alloc;
7550 switches_debug_check[0] = switches;
7552 n_switches = n_switches_debug_check[1];
7553 n_switches_alloc = n_switches_alloc_debug_check[1];
7554 switches = switches_debug_check[1];
7557 /* Avoid crash when computing %j in this early. */
7558 save = save_temps_flag;
7559 save_temps_flag = SAVE_TEMPS_NONE;
7561 compare_debug = -compare_debug;
7562 do_self_spec ("%:compare-debug-self-opt()");
7564 save_temps_flag = save;
7566 if (!compare_debug_second)
7568 n_switches_debug_check[1] = n_switches;
7569 n_switches_alloc_debug_check[1] = n_switches_alloc;
7570 switches_debug_check[1] = switches;
7571 compare_debug = -compare_debug;
7572 n_switches = n_switches_debug_check[0];
7573 n_switches_alloc = n_switches_debug_check[0];
7574 switches = switches_debug_check[0];
7579 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
7580 if (gcc_exec_prefix)
7581 gcc_exec_prefix = concat (gcc_exec_prefix, spec_host_machine,
7582 dir_separator_str, spec_version,
7583 accel_dir_suffix, dir_separator_str, NULL);
7585 /* Now we have the specs.
7586 Set the `valid' bits for switches that match anything in any spec. */
7588 validate_all_switches ();
7590 /* Now that we have the switches and the specs, set
7591 the subdirectory based on the options. */
7592 set_multilib_dir ();
7595 /* Set up to remember the pathname of gcc and any options
7596 needed for collect. We use argv[0] instead of progname because
7597 we need the complete pathname. */
7600 driver::putenv_COLLECT_GCC (const char *argv0) const
7602 obstack_init (&collect_obstack);
7603 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
7604 obstack_grow (&collect_obstack, argv0, strlen (argv0) + 1);
7605 xputenv (XOBFINISH (&collect_obstack, char *));
7608 /* Set up to remember the pathname of the lto wrapper. */
7611 driver::maybe_putenv_COLLECT_LTO_WRAPPER () const
7613 char *lto_wrapper_file;
7616 lto_wrapper_file = NULL;
7618 lto_wrapper_file = find_a_file (&exec_prefixes, "lto-wrapper",
7620 if (lto_wrapper_file)
7622 lto_wrapper_file = convert_white_space (lto_wrapper_file);
7623 lto_wrapper_spec = lto_wrapper_file;
7624 obstack_init (&collect_obstack);
7625 obstack_grow (&collect_obstack, "COLLECT_LTO_WRAPPER=",
7626 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
7627 obstack_grow (&collect_obstack, lto_wrapper_spec,
7628 strlen (lto_wrapper_spec) + 1);
7629 xputenv (XOBFINISH (&collect_obstack, char *));
7634 /* Set up to remember the names of offload targets. */
7637 driver::maybe_putenv_OFFLOAD_TARGETS () const
7639 if (offload_targets && offload_targets[0] != '\0')
7641 obstack_grow (&collect_obstack, "OFFLOAD_TARGET_NAMES=",
7642 sizeof ("OFFLOAD_TARGET_NAMES=") - 1);
7643 obstack_grow (&collect_obstack, offload_targets,
7644 strlen (offload_targets) + 1);
7645 xputenv (XOBFINISH (&collect_obstack, char *));
7648 free (offload_targets);
7649 offload_targets = NULL;
7652 /* Helper function for driver::suggest_option. Populate
7653 m_option_suggestions with candidate strings for misspelled options.
7654 The strings will be freed by the driver's dtor. */
7657 driver::build_option_suggestions (void)
7659 gcc_assert (m_option_suggestions == NULL);
7660 m_option_suggestions = new auto_vec <char *> ();
7662 /* We build a vec of m_option_suggestions, using add_misspelling_candidates
7663 to add copies of strings, without a leading dash. */
7665 for (unsigned int i = 0; i < cl_options_count; i++)
7667 const struct cl_option *option = &cl_options[i];
7668 const char *opt_text = option->opt_text;
7672 if (option->var_type == CLVC_ENUM)
7674 const struct cl_enum *e = &cl_enums[option->var_enum];
7675 for (unsigned j = 0; e->values[j].arg != NULL; j++)
7677 char *with_arg = concat (opt_text, e->values[j].arg, NULL);
7678 add_misspelling_candidates (m_option_suggestions, option,
7684 add_misspelling_candidates (m_option_suggestions, option,
7688 case OPT_fsanitize_:
7689 case OPT_fsanitize_recover_:
7690 /* -fsanitize= and -fsanitize-recover= can take
7691 a comma-separated list of arguments. Given that combinations
7692 are supported, we can't add all potential candidates to the
7693 vec, but if we at least add them individually without commas,
7694 we should do a better job e.g. correcting
7697 "-fsanitize=address"
7698 rather than to "-Wframe-address" (PR driver/69265). */
7700 for (int j = 0; sanitizer_opts[j].name != NULL; ++j)
7702 struct cl_option optb;
7703 /* -fsanitize=all is not valid, only -fno-sanitize=all.
7704 So don't register the positive misspelling candidates
7706 if (sanitizer_opts[j].flag == ~0U && i == OPT_fsanitize_)
7709 optb.opt_text = opt_text = "-fno-sanitize=";
7710 optb.cl_reject_negative = true;
7713 /* Get one arg at a time e.g. "-fsanitize=address". */
7714 char *with_arg = concat (opt_text,
7715 sanitizer_opts[j].name,
7717 /* Add with_arg and all of its variant spellings e.g.
7718 "-fno-sanitize=address" to candidates (albeit without
7720 add_misspelling_candidates (m_option_suggestions, option,
7730 /* Helper function for driver::handle_unrecognized_options.
7732 Given an unrecognized option BAD_OPT (without the leading dash),
7733 locate the closest reasonable matching option (again, without the
7734 leading dash), or NULL.
7736 The returned string is owned by the driver instance. */
7739 driver::suggest_option (const char *bad_opt)
7741 /* Lazily populate m_option_suggestions. */
7742 if (!m_option_suggestions)
7743 build_option_suggestions ();
7744 gcc_assert (m_option_suggestions);
7746 /* "m_option_suggestions" is now populated. Use it. */
7747 return find_closest_string
7749 (auto_vec <const char *> *) m_option_suggestions);
7752 /* Reject switches that no pass was interested in. */
7755 driver::handle_unrecognized_options ()
7757 for (size_t i = 0; (int) i < n_switches; i++)
7758 if (! switches[i].validated)
7760 const char *hint = suggest_option (switches[i].part1);
7762 error ("unrecognized command line option %<-%s%>;"
7763 " did you mean %<-%s%>?",
7764 switches[i].part1, hint);
7766 error ("unrecognized command line option %<-%s%>",
7771 /* Handle the various -print-* options, returning 0 if the driver
7772 should exit, or nonzero if the driver should continue. */
7775 driver::maybe_print_and_exit () const
7777 if (print_search_dirs)
7779 printf (_("install: %s%s\n"),
7780 gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
7781 gcc_exec_prefix ? "" : machine_suffix);
7782 printf (_("programs: %s\n"),
7783 build_search_list (&exec_prefixes, "", false, false));
7784 printf (_("libraries: %s\n"),
7785 build_search_list (&startfile_prefixes, "", false, true));
7789 if (print_file_name)
7791 printf ("%s\n", find_file (print_file_name));
7795 if (print_prog_name)
7797 if (use_ld != NULL && ! strcmp (print_prog_name, "ld"))
7799 /* Append USE_LD to the default linker. */
7800 #ifdef DEFAULT_LINKER
7802 # ifdef HAVE_HOST_EXECUTABLE_SUFFIX
7803 int len = (sizeof (DEFAULT_LINKER)
7804 - sizeof (HOST_EXECUTABLE_SUFFIX));
7808 char *default_linker = xstrdup (DEFAULT_LINKER);
7809 /* Strip HOST_EXECUTABLE_SUFFIX if DEFAULT_LINKER contains
7810 HOST_EXECUTABLE_SUFFIX. */
7811 if (! strcmp (&default_linker[len], HOST_EXECUTABLE_SUFFIX))
7813 default_linker[len] = '\0';
7814 ld = concat (default_linker, use_ld,
7815 HOST_EXECUTABLE_SUFFIX, NULL);
7820 ld = concat (DEFAULT_LINKER, use_ld, NULL);
7821 if (access (ld, X_OK) == 0)
7823 printf ("%s\n", ld);
7827 print_prog_name = concat (print_prog_name, use_ld, NULL);
7829 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
7830 printf ("%s\n", (newname ? newname : print_prog_name));
7834 if (print_multi_lib)
7836 print_multilib_info ();
7840 if (print_multi_directory)
7842 if (multilib_dir == NULL)
7845 printf ("%s\n", multilib_dir);
7849 if (print_multiarch)
7851 if (multiarch_dir == NULL)
7854 printf ("%s\n", multiarch_dir);
7860 if (target_system_root)
7862 if (target_sysroot_suffix)
7863 printf ("%s%s\n", target_system_root, target_sysroot_suffix);
7865 printf ("%s\n", target_system_root);
7870 if (print_multi_os_directory)
7872 if (multilib_os_dir == NULL)
7875 printf ("%s\n", multilib_os_dir);
7879 if (print_sysroot_headers_suffix)
7881 if (*sysroot_hdrs_suffix_spec)
7883 printf("%s\n", (target_sysroot_hdrs_suffix
7884 ? target_sysroot_hdrs_suffix
7889 /* The error status indicates that only one set of fixed
7890 headers should be built. */
7891 fatal_error (input_location,
7892 "not configured with sysroot headers suffix");
7895 if (print_help_list)
7901 printf (_("\nFor bug reporting instructions, please see:\n"));
7902 printf ("%s.\n", bug_report_url);
7907 /* We do not exit here. Instead we have created a fake input file
7908 called 'help-dummy' which needs to be compiled, and we pass this
7909 on the various sub-processes, along with the --help switch.
7910 Ensure their output appears after ours. */
7911 fputc ('\n', stdout);
7917 printf (_("%s %s%s\n"), progname, pkgversion_string,
7919 printf ("Copyright %s 2016 Free Software Foundation, Inc.\n",
7921 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
7922 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
7927 /* We do not exit here. We use the same mechanism of --help to print
7928 the version of the sub-processes. */
7929 fputc ('\n', stdout);
7935 print_configuration (stderr);
7943 /* Figure out what to do with each input file.
7944 Return true if we need to exit early from "main", false otherwise. */
7947 driver::prepare_infiles ()
7950 int lang_n_infiles = 0;
7952 if (n_infiles == added_libraries)
7953 fatal_error (input_location, "no input files");
7956 /* Early exit needed from main. */
7959 /* Make a place to record the compiler output file names
7960 that correspond to the input files. */
7963 i += lang_specific_extra_outfiles;
7964 outfiles = XCNEWVEC (const char *, i);
7966 /* Record which files were specified explicitly as link input. */
7968 explicit_link_files = XCNEWVEC (char, n_infiles);
7970 combine_inputs = have_o || flag_wpa;
7972 for (i = 0; (int) i < n_infiles; i++)
7974 const char *name = infiles[i].name;
7975 struct compiler *compiler = lookup_compiler (name,
7977 infiles[i].language);
7979 if (compiler && !(compiler->combinable))
7980 combine_inputs = false;
7982 if (lang_n_infiles > 0 && compiler != input_file_compiler
7983 && infiles[i].language && infiles[i].language[0] != '*')
7984 infiles[i].incompiler = compiler;
7988 input_file_compiler = compiler;
7989 infiles[i].incompiler = compiler;
7993 /* Since there is no compiler for this input file, assume it is a
7995 explicit_link_files[i] = 1;
7996 infiles[i].incompiler = NULL;
7998 infiles[i].compiled = false;
7999 infiles[i].preprocessed = false;
8002 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1)
8003 fatal_error (input_location,
8004 "cannot specify -o with -c, -S or -E with multiple files");
8006 /* No early exit needed from main; we can continue. */
8010 /* Run the spec machinery on each input file. */
8013 driver::do_spec_on_infiles () const
8017 for (i = 0; (int) i < n_infiles; i++)
8019 int this_file_error = 0;
8021 /* Tell do_spec what to substitute for %i. */
8023 input_file_number = i;
8024 set_input (infiles[i].name);
8026 if (infiles[i].compiled)
8029 /* Use the same thing in %o, unless cp->spec says otherwise. */
8031 outfiles[i] = gcc_input_filename;
8033 /* Figure out which compiler from the file's suffix. */
8036 = lookup_compiler (infiles[i].name, input_filename_length,
8037 infiles[i].language);
8039 if (input_file_compiler)
8041 /* Ok, we found an applicable compiler. Run its spec. */
8043 if (input_file_compiler->spec[0] == '#')
8045 error ("%s: %s compiler not installed on this system",
8046 gcc_input_filename, &input_file_compiler->spec[1]);
8047 this_file_error = 1;
8055 free (debug_check_temp_file[0]);
8056 debug_check_temp_file[0] = NULL;
8058 free (debug_check_temp_file[1]);
8059 debug_check_temp_file[1] = NULL;
8062 value = do_spec (input_file_compiler->spec);
8063 infiles[i].compiled = true;
8065 this_file_error = 1;
8066 else if (compare_debug && debug_check_temp_file[0])
8069 inform (0, "recompiling with -fcompare-debug");
8071 compare_debug = -compare_debug;
8072 n_switches = n_switches_debug_check[1];
8073 n_switches_alloc = n_switches_alloc_debug_check[1];
8074 switches = switches_debug_check[1];
8076 value = do_spec (input_file_compiler->spec);
8078 compare_debug = -compare_debug;
8079 n_switches = n_switches_debug_check[0];
8080 n_switches_alloc = n_switches_alloc_debug_check[0];
8081 switches = switches_debug_check[0];
8085 error ("during -fcompare-debug recompilation");
8086 this_file_error = 1;
8089 gcc_assert (debug_check_temp_file[1]
8090 && filename_cmp (debug_check_temp_file[0],
8091 debug_check_temp_file[1]));
8094 inform (0, "comparing final insns dumps");
8096 if (compare_files (debug_check_temp_file))
8097 this_file_error = 1;
8102 free (debug_check_temp_file[0]);
8103 debug_check_temp_file[0] = NULL;
8105 free (debug_check_temp_file[1]);
8106 debug_check_temp_file[1] = NULL;
8111 /* If this file's name does not contain a recognized suffix,
8112 record it as explicit linker input. */
8115 explicit_link_files[i] = 1;
8117 /* Clear the delete-on-failure queue, deleting the files in it
8118 if this compilation failed. */
8120 if (this_file_error)
8122 delete_failure_queue ();
8125 /* If this compilation succeeded, don't delete those files later. */
8126 clear_failure_queue ();
8129 /* Reset the input file name to the first compile/object file name, for use
8130 with %b in LINK_SPEC. We use the first input file that we can find
8131 a compiler to compile it instead of using infiles.language since for
8132 languages other than C we use aliases that we then lookup later. */
8137 for (i = 0; i < n_infiles ; i++)
8138 if (infiles[i].incompiler
8139 || (infiles[i].language && infiles[i].language[0] != '*'))
8141 set_input (infiles[i].name);
8148 /* Make sure INPUT_FILE_NUMBER points to first available open
8150 input_file_number = n_infiles;
8151 if (lang_specific_pre_link ())
8156 /* If we have to run the linker, do it now. */
8159 driver::maybe_run_linker (const char *argv0) const
8162 int linker_was_run = 0;
8163 int num_linker_inputs;
8165 /* Determine if there are any linker input files. */
8166 num_linker_inputs = 0;
8167 for (i = 0; (int) i < n_infiles; i++)
8168 if (explicit_link_files[i] || outfiles[i] != NULL)
8169 num_linker_inputs++;
8171 /* Run ld to link all the compiler output files. */
8173 if (num_linker_inputs > 0 && !seen_error () && print_subprocess_help < 2)
8175 int tmp = execution_count;
8179 #if HAVE_LTO_PLUGIN > 0
8180 #if HAVE_LTO_PLUGIN == 2
8181 const char *fno_use_linker_plugin = "fno-use-linker-plugin";
8183 const char *fuse_linker_plugin = "fuse-linker-plugin";
8187 /* We'll use ld if we can't find collect2. */
8188 if (! strcmp (linker_name_spec, "collect2"))
8190 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false);
8192 linker_name_spec = "ld";
8195 #if HAVE_LTO_PLUGIN > 0
8196 #if HAVE_LTO_PLUGIN == 2
8197 if (!switch_matches (fno_use_linker_plugin,
8198 fno_use_linker_plugin
8199 + strlen (fno_use_linker_plugin), 0))
8201 if (switch_matches (fuse_linker_plugin,
8203 + strlen (fuse_linker_plugin), 0))
8206 char *temp_spec = find_a_file (&exec_prefixes,
8207 LTOPLUGINSONAME, R_OK,
8210 fatal_error (input_location,
8211 "-fuse-linker-plugin, but %s not found",
8213 linker_plugin_file_spec = convert_white_space (temp_spec);
8216 lto_gcc_spec = argv0;
8219 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
8221 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false);
8222 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true);
8224 if (print_subprocess_help == 1)
8226 printf (_("\nLinker options\n==============\n\n"));
8227 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
8228 " to the linker.\n\n"));
8231 int value = do_spec (link_command_spec);
8234 linker_was_run = (tmp != execution_count);
8237 /* If options said don't run linker,
8238 complain about input files to be given to the linker. */
8240 if (! linker_was_run && !seen_error ())
8241 for (i = 0; (int) i < n_infiles; i++)
8242 if (explicit_link_files[i]
8243 && !(infiles[i].language && infiles[i].language[0] == '*'))
8244 warning (0, "%s: linker input file unused because linking not done",
8248 /* The end of "main". */
8251 driver::final_actions () const
8253 /* Delete some or all of the temporary files we made. */
8256 delete_failure_queue ();
8257 delete_temp_files ();
8259 if (print_help_list)
8261 printf (("\nFor bug reporting instructions, please see:\n"));
8262 printf ("%s\n", bug_report_url);
8266 /* Determine what the exit code of the driver should be. */
8269 driver::get_exit_code () const
8271 return (signal_count != 0 ? 2
8272 : seen_error () ? (pass_exit_codes ? greatest_status : 1)
8276 /* Find the proper compilation spec for the file name NAME,
8277 whose length is LENGTH. LANGUAGE is the specified language,
8278 or 0 if this file is to be passed to the linker. */
8280 static struct compiler *
8281 lookup_compiler (const char *name, size_t length, const char *language)
8283 struct compiler *cp;
8285 /* If this was specified by the user to be a linker input, indicate that. */
8286 if (language != 0 && language[0] == '*')
8289 /* Otherwise, look for the language, if one is spec'd. */
8292 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
8293 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
8295 if (name != NULL && strcmp (name, "-") == 0
8296 && (strcmp (cp->suffix, "@c-header") == 0
8297 || strcmp (cp->suffix, "@c++-header") == 0)
8299 fatal_error (input_location,
8300 "cannot use %<-%> as input filename for a "
8301 "precompiled header");
8306 error ("language %s not recognized", language);
8310 /* Look for a suffix. */
8311 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
8313 if (/* The suffix `-' matches only the file name `-'. */
8314 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
8315 || (strlen (cp->suffix) < length
8316 /* See if the suffix matches the end of NAME. */
8317 && !strcmp (cp->suffix,
8318 name + length - strlen (cp->suffix))
8323 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
8324 /* Look again, but case-insensitively this time. */
8326 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
8328 if (/* The suffix `-' matches only the file name `-'. */
8329 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
8330 || (strlen (cp->suffix) < length
8331 /* See if the suffix matches the end of NAME. */
8332 && ((!strcmp (cp->suffix,
8333 name + length - strlen (cp->suffix))
8334 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
8335 && !strcasecmp (cp->suffix,
8336 name + length - strlen (cp->suffix)))
8342 if (cp >= compilers)
8344 if (cp->spec[0] != '@')
8345 /* A non-alias entry: return it. */
8348 /* An alias entry maps a suffix to a language.
8349 Search for the language; pass 0 for NAME and LENGTH
8350 to avoid infinite recursion if language not found. */
8351 return lookup_compiler (NULL, 0, cp->spec + 1);
8357 save_string (const char *s, int len)
8359 char *result = XNEWVEC (char, len + 1);
8361 memcpy (result, s, len);
8367 pfatal_with_name (const char *name)
8369 perror_with_name (name);
8370 delete_temp_files ();
8375 perror_with_name (const char *name)
8377 error ("%s: %m", name);
8381 validate_switches_from_spec (const char *spec, bool user)
8383 const char *p = spec;
8386 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
8387 /* We have a switch spec. */
8388 p = validate_switches (p + 1, user);
8392 validate_all_switches (void)
8394 struct compiler *comp;
8395 struct spec_list *spec;
8397 for (comp = compilers; comp->spec; comp++)
8398 validate_switches_from_spec (comp->spec, false);
8400 /* Look through the linked list of specs read from the specs file. */
8401 for (spec = specs; spec; spec = spec->next)
8402 validate_switches_from_spec (*spec->ptr_spec, spec->user_p);
8404 validate_switches_from_spec (link_command_spec, false);
8407 /* Look at the switch-name that comes after START
8408 and mark as valid all supplied switches that match it. */
8411 validate_switches (const char *start, bool user_spec)
8413 const char *p = start;
8417 bool suffix = false;
8418 bool starred = false;
8420 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
8429 if (*p == '.' || *p == ',')
8433 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
8434 || *p == ',' || *p == '.' || *p == '@')
8439 starred = true, p++;
8445 /* Mark all matching switches as valid. */
8446 for (i = 0; i < n_switches; i++)
8447 if (!strncmp (switches[i].part1, atom, len)
8448 && (starred || switches[i].part1[len] == '\0')
8449 && (switches[i].known || user_spec))
8450 switches[i].validated = true;
8454 if (*p && (p[-1] == '|' || p[-1] == '&'))
8457 if (*p && p[-1] == ':')
8459 while (*p && *p != ';' && *p != '}')
8464 if (*p == '{' || *p == '<')
8465 p = validate_switches (p+1, user_spec);
8466 else if (p[0] == 'W' && p[1] == '{')
8467 p = validate_switches (p+2, user_spec);
8474 if (*p && p[-1] == ';')
8488 static struct mdswitchstr *mdswitches;
8489 static int n_mdswitches;
8491 /* Check whether a particular argument was used. The first time we
8492 canonicalize the switches to keep only the ones we care about. */
8497 int operator () (const char *p, int len);
8504 const char *replace;
8509 mswitchstr *mswitches;
8514 used_arg_t used_arg;
8517 used_arg_t::operator () (const char *p, int len)
8523 struct mswitchstr *matches;
8527 /* Break multilib_matches into the component strings of string
8528 and replacement string. */
8529 for (q = multilib_matches; *q != '\0'; q++)
8534 = (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
8536 q = multilib_matches;
8545 fatal_error (input_location, "multilib spec %qs is invalid",
8550 matches[i].len = q - matches[i].str;
8552 matches[i].replace = ++q;
8553 while (*q != ';' && *q != '\0')
8556 goto invalid_matches;
8559 matches[i].rep_len = q - matches[i].replace;
8565 /* Now build a list of the replacement string for switches that we care
8566 about. Make sure we allocate at least one entry. This prevents
8567 xmalloc from calling fatal, and prevents us from re-executing this
8570 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1));
8571 for (i = 0; i < n_switches; i++)
8572 if ((switches[i].live_cond & SWITCH_IGNORE) == 0)
8574 int xlen = strlen (switches[i].part1);
8575 for (j = 0; j < cnt; j++)
8576 if (xlen == matches[j].len
8577 && ! strncmp (switches[i].part1, matches[j].str, xlen))
8579 mswitches[n_mswitches].str = matches[j].replace;
8580 mswitches[n_mswitches].len = matches[j].rep_len;
8581 mswitches[n_mswitches].replace = (char *) 0;
8582 mswitches[n_mswitches].rep_len = 0;
8588 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
8589 on the command line nor any options mutually incompatible with
8591 for (i = 0; i < n_mdswitches; i++)
8595 for (q = multilib_options; *q != '\0'; *q && q++)
8601 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
8602 || strchr (" /", q[mdswitches[i].len]) == NULL)
8604 while (*q != ' ' && *q != '/' && *q != '\0')
8611 if (*q != ' ' && *q != '\0')
8613 while (*r != ' ' && *r != '\0')
8616 while (*q != ' ' && *q != '/' && *q != '\0')
8619 if (used_arg (r, q - r))
8624 mswitches[n_mswitches].str = mdswitches[i].str;
8625 mswitches[n_mswitches].len = mdswitches[i].len;
8626 mswitches[n_mswitches].replace = (char *) 0;
8627 mswitches[n_mswitches].rep_len = 0;
8640 for (i = 0; i < n_mswitches; i++)
8641 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
8647 void used_arg_t::finalize ()
8649 XDELETEVEC (mswitches);
8656 default_arg (const char *p, int len)
8660 for (i = 0; i < n_mdswitches; i++)
8661 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
8667 /* Work out the subdirectory to use based on the options. The format of
8668 multilib_select is a list of elements. Each element is a subdirectory
8669 name followed by a list of options followed by a semicolon. The format
8670 of multilib_exclusions is the same, but without the preceding
8671 directory. First gcc will check the exclusions, if none of the options
8672 beginning with an exclamation point are present, and all of the other
8673 options are present, then we will ignore this completely. Passing
8674 that, gcc will consider each multilib_select in turn using the same
8675 rules for matching the options. If a match is found, that subdirectory
8677 A subdirectory name is optionally followed by a colon and the corresponding
8681 set_multilib_dir (void)
8684 unsigned int this_path_len;
8685 const char *this_path, *this_arg;
8686 const char *start, *end;
8688 int ok, ndfltok, first;
8691 start = multilib_defaults;
8692 while (*start == ' ' || *start == '\t')
8694 while (*start != '\0')
8697 while (*start != ' ' && *start != '\t' && *start != '\0')
8699 while (*start == ' ' || *start == '\t')
8707 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches);
8708 for (start = multilib_defaults; *start != '\0'; start = end + 1)
8710 while (*start == ' ' || *start == '\t')
8716 for (end = start + 1;
8717 *end != ' ' && *end != '\t' && *end != '\0'; end++)
8720 obstack_grow (&multilib_obstack, start, end - start);
8721 obstack_1grow (&multilib_obstack, 0);
8722 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *);
8723 mdswitches[i++].len = end - start;
8730 p = multilib_exclusions;
8733 /* Ignore newlines. */
8740 /* Check the arguments. */
8747 fatal_error (input_location, "multilib exclusions %qs is invalid",
8748 multilib_exclusions);
8758 while (*p != ' ' && *p != ';')
8761 goto invalid_exclusions;
8765 if (*this_arg != '!')
8773 ok = used_arg (this_arg, p - this_arg);
8788 p = multilib_select;
8790 /* Append multilib reuse rules if any. With those rules, we can reuse
8791 one multilib for certain different options sets. */
8792 if (strlen (multilib_reuse) > 0)
8793 p = concat (p, multilib_reuse, NULL);
8797 /* Ignore newlines. */
8804 /* Get the initial path. */
8811 fatal_error (input_location, "multilib select %qs %qs is invalid",
8812 multilib_select, multilib_reuse);
8816 this_path_len = p - this_path;
8818 /* Check the arguments. */
8825 goto invalid_select;
8834 while (*p != ' ' && *p != ';')
8837 goto invalid_select;
8841 if (*this_arg != '!')
8849 /* If this is a default argument, we can just ignore it.
8850 This is true even if this_arg begins with '!'. Beginning
8851 with '!' does not mean that this argument is necessarily
8852 inappropriate for this library: it merely means that
8853 there is a more specific library which uses this
8854 argument. If this argument is a default, we need not
8855 consider that more specific library. */
8856 ok = used_arg (this_arg, p - this_arg);
8863 if (default_arg (this_arg, p - this_arg))
8872 if (this_path_len != 1
8873 || this_path[0] != '.')
8875 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1);
8878 strncpy (new_multilib_dir, this_path, this_path_len);
8879 new_multilib_dir[this_path_len] = '\0';
8880 q = strchr (new_multilib_dir, ':');
8883 multilib_dir = new_multilib_dir;
8890 const char *q = this_path, *end = this_path + this_path_len;
8892 while (q < end && *q != ':')
8896 const char *q2 = q + 1, *ml_end = end;
8897 char *new_multilib_os_dir;
8899 while (q2 < end && *q2 != ':')
8903 if (ml_end - q == 1)
8904 multilib_os_dir = xstrdup (".");
8907 new_multilib_os_dir = XNEWVEC (char, ml_end - q);
8908 memcpy (new_multilib_os_dir, q + 1, ml_end - q - 1);
8909 new_multilib_os_dir[ml_end - q - 1] = '\0';
8910 multilib_os_dir = new_multilib_os_dir;
8913 if (q2 < end && *q2 == ':')
8915 char *new_multiarch_dir = XNEWVEC (char, end - q2);
8916 memcpy (new_multiarch_dir, q2 + 1, end - q2 - 1);
8917 new_multiarch_dir[end - q2 - 1] = '\0';
8918 multiarch_dir = new_multiarch_dir;
8927 if (multilib_dir == NULL && multilib_os_dir != NULL
8928 && strcmp (multilib_os_dir, ".") == 0)
8930 free (CONST_CAST (char *, multilib_os_dir));
8931 multilib_os_dir = NULL;
8933 else if (multilib_dir != NULL && multilib_os_dir == NULL)
8934 multilib_os_dir = multilib_dir;
8937 /* Print out the multiple library subdirectory selection
8938 information. This prints out a series of lines. Each line looks
8939 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
8940 required. Only the desired options are printed out, the negative
8941 matches. The options are print without a leading dash. There are
8942 no spaces to make it easy to use the information in the shell.
8943 Each subdirectory is printed only once. This assumes the ordering
8944 generated by the genmultilib script. Also, we leave out ones that match
8948 print_multilib_info (void)
8950 const char *p = multilib_select;
8951 const char *last_path = 0, *this_path;
8953 unsigned int last_path_len = 0;
8958 /* Ignore newlines. */
8965 /* Get the initial path. */
8972 fatal_error (input_location,
8973 "multilib select %qs is invalid", multilib_select);
8979 /* When --disable-multilib was used but target defines
8980 MULTILIB_OSDIRNAMES, entries starting with .: (and not starting
8981 with .:: for multiarch configurations) are there just to find
8982 multilib_os_dir, so skip them from output. */
8983 if (this_path[0] == '.' && this_path[1] == ':' && this_path[2] != ':')
8986 /* Check for matches with the multilib_exclusions. We don't bother
8987 with the '!' in either list. If any of the exclusion rules match
8988 all of its options with the select rule, we skip it. */
8990 const char *e = multilib_exclusions;
8991 const char *this_arg;
8996 /* Ignore newlines. */
9003 /* Check the arguments. */
9012 fatal_error (input_location,
9013 "multilib exclusion %qs is invalid",
9014 multilib_exclusions);
9025 while (*e != ' ' && *e != ';')
9028 goto invalid_exclusion;
9036 int len = e - this_arg;
9039 goto invalid_select;
9043 while (*q != ' ' && *q != ';')
9046 goto invalid_select;
9050 if (! strncmp (arg, this_arg,
9051 (len < q - arg) ? q - arg : len)
9052 || default_arg (this_arg, e - this_arg))
9082 /* If this is a duplicate, skip it. */
9083 skip = (last_path != 0
9084 && (unsigned int) (p - this_path) == last_path_len
9085 && ! filename_ncmp (last_path, this_path, last_path_len));
9087 last_path = this_path;
9088 last_path_len = p - this_path;
9091 /* If this directory requires any default arguments, we can skip
9092 it. We will already have printed a directory identical to
9093 this one which does not require that default argument. */
9104 goto invalid_select;
9111 while (*q != ' ' && *q != ';')
9114 goto invalid_select;
9119 && default_arg (arg, q - arg))
9134 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
9145 goto invalid_select;
9153 use_arg = *p != '!';
9158 while (*p != ' ' && *p != ';')
9161 goto invalid_select;
9173 /* If there are extra options, print them now. */
9174 if (multilib_extra && *multilib_extra)
9176 int print_at = TRUE;
9179 for (q = multilib_extra; *q != '\0'; q++)
9200 /* getenv built-in spec function.
9202 Returns the value of the environment variable given by its first argument,
9203 concatenated with the second argument. If the variable is not defined, a
9204 fatal error is issued unless such undefs are internally allowed, in which
9205 case the variable name is used as the variable value. */
9208 getenv_spec_function (int argc, const char **argv)
9211 const char *varname;
9221 value = env.get (varname);
9223 if (!value && spec_undefvar_allowed)
9227 fatal_error (input_location,
9228 "environment variable %qs not defined", varname);
9230 /* We have to escape every character of the environment variable so
9231 they are not interpreted as active spec characters. A
9232 particularly painful case is when we are reading a variable
9233 holding a windows path complete with \ separators. */
9234 len = strlen (value) * 2 + strlen (argv[1]) + 1;
9235 result = XNEWVAR (char, len);
9236 for (ptr = result; *value; ptr += 2)
9242 strcpy (ptr, argv[1]);
9247 /* if-exists built-in spec function.
9249 Checks to see if the file specified by the absolute pathname in
9250 ARGS exists. Returns that pathname if found.
9252 The usual use for this function is to check for a library file
9253 (whose name has been expanded with %s). */
9256 if_exists_spec_function (int argc, const char **argv)
9258 /* Must have only one argument. */
9259 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
9265 /* if-exists-else built-in spec function.
9267 This is like if-exists, but takes an additional argument which
9268 is returned if the first argument does not exist. */
9271 if_exists_else_spec_function (int argc, const char **argv)
9273 /* Must have exactly two arguments. */
9277 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
9283 /* sanitize built-in spec function.
9285 This returns non-NULL, if sanitizing address, thread or
9286 any of the undefined behavior sanitizers. */
9289 sanitize_spec_function (int argc, const char **argv)
9294 if (strcmp (argv[0], "address") == 0)
9295 return (flag_sanitize & SANITIZE_USER_ADDRESS) ? "" : NULL;
9296 if (strcmp (argv[0], "kernel-address") == 0)
9297 return (flag_sanitize & SANITIZE_KERNEL_ADDRESS) ? "" : NULL;
9298 if (strcmp (argv[0], "thread") == 0)
9299 return (flag_sanitize & SANITIZE_THREAD) ? "" : NULL;
9300 if (strcmp (argv[0], "undefined") == 0)
9301 return ((flag_sanitize & (SANITIZE_UNDEFINED | SANITIZE_NONDEFAULT))
9302 && !flag_sanitize_undefined_trap_on_error) ? "" : NULL;
9303 if (strcmp (argv[0], "leak") == 0)
9304 return ((flag_sanitize
9305 & (SANITIZE_ADDRESS | SANITIZE_LEAK | SANITIZE_THREAD))
9306 == SANITIZE_LEAK) ? "" : NULL;
9310 /* replace-outfile built-in spec function.
9312 This looks for the first argument in the outfiles array's name and
9313 replaces it with the second argument. */
9316 replace_outfile_spec_function (int argc, const char **argv)
9319 /* Must have exactly two arguments. */
9323 for (i = 0; i < n_infiles; i++)
9325 if (outfiles[i] && !filename_cmp (outfiles[i], argv[0]))
9326 outfiles[i] = xstrdup (argv[1]);
9331 /* remove-outfile built-in spec function.
9333 * This looks for the first argument in the outfiles array's name and
9337 remove_outfile_spec_function (int argc, const char **argv)
9340 /* Must have exactly one argument. */
9344 for (i = 0; i < n_infiles; i++)
9346 if (outfiles[i] && !filename_cmp (outfiles[i], argv[0]))
9352 /* Given two version numbers, compares the two numbers.
9353 A version number must match the regular expression
9354 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
9357 compare_version_strings (const char *v1, const char *v2)
9362 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
9363 REG_EXTENDED | REG_NOSUB) != 0)
9365 rresult = regexec (&r, v1, 0, NULL, 0);
9366 if (rresult == REG_NOMATCH)
9367 fatal_error (input_location, "invalid version number %qs", v1);
9368 else if (rresult != 0)
9370 rresult = regexec (&r, v2, 0, NULL, 0);
9371 if (rresult == REG_NOMATCH)
9372 fatal_error (input_location, "invalid version number %qs", v2);
9373 else if (rresult != 0)
9376 return strverscmp (v1, v2);
9380 /* version_compare built-in spec function.
9382 This takes an argument of the following form:
9384 <comparison-op> <arg1> [<arg2>] <switch> <result>
9386 and produces "result" if the comparison evaluates to true,
9387 and nothing if it doesn't.
9389 The supported <comparison-op> values are:
9391 >= true if switch is a later (or same) version than arg1
9393 < true if switch is an earlier version than arg1
9395 >< true if switch is arg1 or later, and earlier than arg2
9396 <> true if switch is earlier than arg1 or is arg2 or later
9398 If the switch is not present, the condition is false unless
9399 the first character of the <comparison-op> is '!'.
9402 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
9403 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
9406 version_compare_spec_function (int argc, const char **argv)
9410 const char *switch_value = NULL;
9415 fatal_error (input_location, "too few arguments to %%:version-compare");
9416 if (argv[0][0] == '\0')
9418 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!')
9420 if (argc != nargs + 3)
9421 fatal_error (input_location, "too many arguments to %%:version-compare");
9423 switch_len = strlen (argv[nargs + 1]);
9424 for (i = 0; i < n_switches; i++)
9425 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len)
9426 && check_live_switch (i, switch_len))
9427 switch_value = switches[i].part1 + switch_len;
9429 if (switch_value == NULL)
9433 comp1 = compare_version_strings (switch_value, argv[1]);
9435 comp2 = compare_version_strings (switch_value, argv[2]);
9437 comp2 = -1; /* This value unused. */
9440 switch (argv[0][0] << 8 | argv[0][1])
9442 case '>' << 8 | '=':
9443 result = comp1 >= 0;
9445 case '!' << 8 | '<':
9446 result = comp1 >= 0 || switch_value == NULL;
9451 case '!' << 8 | '>':
9452 result = comp1 < 0 || switch_value == NULL;
9454 case '>' << 8 | '<':
9455 result = comp1 >= 0 && comp2 < 0;
9457 case '<' << 8 | '>':
9458 result = comp1 < 0 || comp2 >= 0;
9462 fatal_error (input_location,
9463 "unknown operator %qs in %%:version-compare", argv[0]);
9468 return argv[nargs + 2];
9471 /* %:include builtin spec function. This differs from %include in that it
9472 can be nested inside a spec, and thus be conditionalized. It takes
9473 one argument, the filename, and looks for it in the startfile path.
9474 The result is always NULL, i.e. an empty expansion. */
9477 include_spec_function (int argc, const char **argv)
9484 file = find_a_file (&startfile_prefixes, argv[0], R_OK, true);
9485 read_specs (file ? file : argv[0], false, false);
9490 /* %:find-file spec function. This function replaces its argument by
9491 the file found through find_file, that is the -print-file-name gcc
9494 find_file_spec_function (int argc, const char **argv)
9501 file = find_file (argv[0]);
9506 /* %:find-plugindir spec function. This function replaces its argument
9507 by the -iplugindir=<dir> option. `dir' is found through find_file, that
9508 is the -print-file-name gcc program option. */
9510 find_plugindir_spec_function (int argc, const char **argv ATTRIBUTE_UNUSED)
9517 option = concat ("-iplugindir=", find_file ("plugin"), NULL);
9522 /* %:print-asm-header spec function. Print a banner to say that the
9523 following output is from the assembler. */
9526 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED,
9527 const char **argv ATTRIBUTE_UNUSED)
9529 printf (_("Assembler options\n=================\n\n"));
9530 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
9535 /* Get a random number for -frandom-seed */
9537 static unsigned HOST_WIDE_INT
9538 get_random_number (void)
9540 unsigned HOST_WIDE_INT ret = 0;
9543 fd = open ("/dev/urandom", O_RDONLY);
9546 read (fd, &ret, sizeof (HOST_WIDE_INT));
9552 /* Get some more or less random data. */
9553 #ifdef HAVE_GETTIMEOFDAY
9557 gettimeofday (&tv, NULL);
9558 ret = tv.tv_sec * 1000 + tv.tv_usec / 1000;
9562 time_t now = time (NULL);
9564 if (now != (time_t)-1)
9565 ret = (unsigned) now;
9569 return ret ^ getpid ();
9572 /* %:compare-debug-dump-opt spec function. Save the last argument,
9573 expected to be the last -fdump-final-insns option, or generate a
9577 compare_debug_dump_opt_spec_function (int arg,
9578 const char **argv ATTRIBUTE_UNUSED)
9583 static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3];
9586 fatal_error (input_location,
9587 "too many arguments to %%:compare-debug-dump-opt");
9589 do_spec_2 ("%{fdump-final-insns=*:%*}");
9590 do_spec_1 (" ", 0, NULL);
9592 if (argbuf.length () > 0
9593 && strcmp (argv[argbuf.length () - 1], "."))
9598 name = xstrdup (argv[argbuf.length () - 1]);
9603 const char *ext = NULL;
9605 if (argbuf.length () > 0)
9607 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
9610 else if (!compare_debug)
9613 do_spec_2 ("%g.gkd");
9615 do_spec_1 (" ", 0, NULL);
9617 gcc_assert (argbuf.length () > 0);
9619 name = concat (argbuf.last (), ext, NULL);
9621 ret = concat ("-fdump-final-insns=", name, NULL);
9624 which = compare_debug < 0;
9625 debug_check_temp_file[which] = name;
9629 unsigned HOST_WIDE_INT value = get_random_number ();
9631 sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value);
9637 ret = concat ("%{!frandom-seed=*:-frandom-seed=", random_seed, "} ",
9648 static const char *debug_auxbase_opt;
9650 /* %:compare-debug-self-opt spec function. Expands to the options
9651 that are to be passed in the second compilation of
9655 compare_debug_self_opt_spec_function (int arg,
9656 const char **argv ATTRIBUTE_UNUSED)
9659 fatal_error (input_location,
9660 "too many arguments to %%:compare-debug-self-opt");
9662 if (compare_debug >= 0)
9665 do_spec_2 ("%{c|S:%{o*:%*}}");
9666 do_spec_1 (" ", 0, NULL);
9668 if (argbuf.length () > 0)
9669 debug_auxbase_opt = concat ("-auxbase-strip ",
9673 debug_auxbase_opt = NULL;
9676 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
9677 %<fdump-final-insns=* -w -S -o %j \
9678 %{!fcompare-debug-second:-fcompare-debug-second} \
9679 ", compare_debug_opt, NULL);
9682 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
9683 options that are to be passed in the second compilation of
9684 compare-debug. It expects, as an argument, the basename of the
9685 current input file name, with the .gk suffix appended to it. */
9688 compare_debug_auxbase_opt_spec_function (int arg,
9695 fatal_error (input_location,
9696 "too few arguments to %%:compare-debug-auxbase-opt");
9699 fatal_error (input_location,
9700 "too many arguments to %%:compare-debug-auxbase-opt");
9702 if (compare_debug >= 0)
9705 len = strlen (argv[0]);
9706 if (len < 3 || strcmp (argv[0] + len - 3, ".gk") != 0)
9707 fatal_error (input_location, "argument to %%:compare-debug-auxbase-opt "
9708 "does not end in .gk");
9710 if (debug_auxbase_opt)
9711 return debug_auxbase_opt;
9713 #define OPT "-auxbase "
9716 name = (char*) xmalloc (sizeof (OPT) + len);
9717 memcpy (name, OPT, sizeof (OPT) - 1);
9718 memcpy (name + sizeof (OPT) - 1, argv[0], len);
9719 name[sizeof (OPT) - 1 + len] = '\0';
9726 /* %:pass-through-libs spec function. Finds all -l options and input
9727 file names in the lib spec passed to it, and makes a list of them
9728 prepended with the plugin option to cause them to be passed through
9729 to the final link after all the new object files have been added. */
9732 pass_through_libs_spec_func (int argc, const char **argv)
9734 char *prepended = xstrdup (" ");
9736 /* Shlemiel the painter's algorithm. Innately horrible, but at least
9737 we know that there will never be more than a handful of strings to
9738 concat, and it's only once per run, so it's not worth optimising. */
9739 for (n = 0; n < argc; n++)
9741 char *old = prepended;
9742 /* Anything that isn't an option is a full path to an output
9743 file; pass it through if it ends in '.a'. Among options,
9745 if (argv[n][0] == '-' && argv[n][1] == 'l')
9747 const char *lopt = argv[n] + 2;
9748 /* Handle both joined and non-joined -l options. If for any
9749 reason there's a trailing -l with no joined or following
9750 arg just discard it. */
9751 if (!*lopt && ++n >= argc)
9755 prepended = concat (prepended, "-plugin-opt=-pass-through=-l",
9758 else if (!strcmp (".a", argv[n] + strlen (argv[n]) - 2))
9760 prepended = concat (prepended, "-plugin-opt=-pass-through=",
9761 argv[n], " ", NULL);
9763 if (prepended != old)
9769 /* %:replace-extension spec function. Replaces the extension of the
9770 first argument with the second argument. */
9773 replace_extension_spec_func (int argc, const char **argv)
9781 fatal_error (input_location, "too few arguments to %%:replace-extension");
9783 name = xstrdup (argv[0]);
9785 for (i = strlen (name) - 1; i >= 0; i--)
9786 if (IS_DIR_SEPARATOR (name[i]))
9789 p = strrchr (name + i + 1, '.');
9793 result = concat (name, argv[1], NULL);
9799 /* Returns "" if ARGV[ARGC - 2] is greater than ARGV[ARGC-1].
9800 Otherwise, return NULL. */
9803 greater_than_spec_func (int argc, const char **argv)
9810 gcc_assert (argc >= 2);
9812 long arg = strtol (argv[argc - 2], &converted, 10);
9813 gcc_assert (converted != argv[argc - 2]);
9815 long lim = strtol (argv[argc - 1], &converted, 10);
9816 gcc_assert (converted != argv[argc - 1]);
9824 /* Insert backslash before spaces in ORIG (usually a file path), to
9825 avoid being broken by spec parser.
9827 This function is needed as do_spec_1 treats white space (' ' and '\t')
9828 as the end of an argument. But in case of -plugin /usr/gcc install/xxx.so,
9829 the file name should be treated as a single argument rather than being
9830 broken into multiple. Solution is to insert '\\' before the space in a
9833 This function converts and only converts all occurrence of ' '
9834 to '\\' + ' ' and '\t' to '\\' + '\t'. For example:
9838 "a\\ b" -> "a\\\\ b"
9840 orig: input null-terminating string that was allocated by xalloc. The
9841 memory it points to might be freed in this function. Behavior undefined
9842 if ORIG wasn't xalloced or was freed already at entry.
9844 Return: ORIG if no conversion needed. Otherwise a newly allocated string
9845 that was converted from ORIG. */
9848 convert_white_space (char *orig)
9850 int len, number_of_space = 0;
9852 for (len = 0; orig[len]; len++)
9853 if (orig[len] == ' ' || orig[len] == '\t') number_of_space++;
9855 if (number_of_space)
9857 char *new_spec = (char *) xmalloc (len + number_of_space + 1);
9859 for (j = 0, k = 0; j <= len; j++, k++)
9861 if (orig[j] == ' ' || orig[j] == '\t')
9862 new_spec[k++] = '\\';
9863 new_spec[k] = orig[j];
9873 path_prefix_reset (path_prefix *prefix)
9875 struct prefix_list *iter, *next;
9876 iter = prefix->plist;
9880 free (const_cast <char *> (iter->prefix));
9885 prefix->max_len = 0;
9888 /* Restore all state within gcc.c to the initial state, so that the driver
9889 code can be safely re-run in-process.
9891 Many const char * variables are referenced by static specs (see
9892 INIT_STATIC_SPEC above). These variables are restored to their default
9893 values by a simple loop over the static specs.
9895 For other variables, we directly restore them all to their initial
9896 values (often implicitly 0).
9898 Free the various obstacks in this file, along with "opts_obstack"
9901 This function also restores any environment variables that were changed. */
9907 params_c_finalize ();
9908 diagnostic_finish (global_dc);
9911 at_file_supplied = 0;
9912 print_help_list = 0;
9914 verbose_only_flag = 0;
9915 print_subprocess_help = 0;
9917 report_times_to_file = NULL;
9918 target_system_root = DEFAULT_TARGET_SYSTEM_ROOT;
9919 target_system_root_changed = 0;
9920 target_sysroot_suffix = 0;
9921 target_sysroot_hdrs_suffix = 0;
9922 save_temps_flag = SAVE_TEMPS_NONE;
9923 save_temps_prefix = 0;
9924 save_temps_length = 0;
9925 spec_machine = DEFAULT_TARGET_MACHINE;
9926 greatest_status = 1;
9928 finalize_options_struct (&global_options);
9929 finalize_options_struct (&global_options_set);
9931 obstack_free (&obstack, NULL);
9932 obstack_free (&opts_obstack, NULL); /* in opts.c */
9933 obstack_free (&collect_obstack, NULL);
9935 link_command_spec = LINK_COMMAND_SPEC;
9937 obstack_free (&multilib_obstack, NULL);
9939 user_specs_head = NULL;
9940 user_specs_tail = NULL;
9942 /* Within the "compilers" vec, the fields "suffix" and "spec" were
9943 statically allocated for the default compilers, but dynamically
9944 allocated for additional compilers. Delete them for the latter. */
9945 for (int i = n_default_compilers; i < n_compilers; i++)
9947 free (const_cast <char *> (compilers[i].suffix));
9948 free (const_cast <char *> (compilers[i].spec));
9950 XDELETEVEC (compilers);
9954 linker_options.truncate (0);
9955 assembler_options.truncate (0);
9956 preprocessor_options.truncate (0);
9958 path_prefix_reset (&exec_prefixes);
9959 path_prefix_reset (&startfile_prefixes);
9960 path_prefix_reset (&include_prefixes);
9963 just_machine_suffix = 0;
9964 gcc_exec_prefix = 0;
9965 gcc_libexec_prefix = 0;
9966 md_exec_prefix = MD_EXEC_PREFIX;
9967 md_startfile_prefix = MD_STARTFILE_PREFIX;
9968 md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
9970 multilib_os_dir = 0;
9973 /* Free any specs dynamically-allocated by set_spec.
9974 These will be at the head of the list, before the
9975 statically-allocated ones. */
9978 while (specs != static_specs)
9980 spec_list *next = specs->next;
9981 free (const_cast <char *> (specs->name));
9987 for (unsigned i = 0; i < ARRAY_SIZE (static_specs); i++)
9989 spec_list *sl = &static_specs[i];
9993 free (const_cast <char *> (*(sl->ptr_spec)));
9994 sl->alloc_p = false;
9996 *(sl->ptr_spec) = sl->default_ptr;
10002 processing_spec_function = 0;
10004 argbuf.truncate (0);
10010 execution_count = 0;
10013 temp_filename = NULL;
10014 temp_filename_length = 0;
10015 always_delete_queue = NULL;
10016 failure_delete_queue = NULL;
10018 XDELETEVEC (switches);
10021 n_switches_alloc = 0;
10024 compare_debug_second = 0;
10025 compare_debug_opt = NULL;
10026 for (int i = 0; i < 2; i++)
10028 switches_debug_check[i] = NULL;
10029 n_switches_debug_check[i] = 0;
10030 n_switches_alloc_debug_check[i] = 0;
10031 debug_check_temp_file[i] = NULL;
10034 XDELETEVEC (infiles);
10037 n_infiles_alloc = 0;
10039 combine_inputs = false;
10040 added_libraries = 0;
10041 XDELETEVEC (outfiles);
10044 last_language_n_infiles = 0;
10045 gcc_input_filename = NULL;
10046 input_file_number = 0;
10047 input_filename_length = 0;
10048 basename_length = 0;
10049 suffixed_basename_length = 0;
10050 input_basename = NULL;
10051 input_suffix = NULL;
10052 /* We don't need to purge "input_stat", just to unset "input_stat_set". */
10053 input_stat_set = 0;
10054 input_file_compiler = NULL;
10056 delete_this_arg = 0;
10057 this_is_output_file = 0;
10058 this_is_library_file = 0;
10059 this_is_linker_script = 0;
10060 input_from_pipe = 0;
10061 suffix_subst = NULL;
10066 debug_auxbase_opt = NULL;
10068 used_arg.finalize ();
10072 Targets can provide configure-time default options in
10073 OPTION_DEFAULT_SPECS. The jit needs to access these, but
10074 they are expressed in the spec language.
10076 Run just enough of the driver to be able to expand these
10077 specs, and then call the callback CB on each
10078 such option. The options strings are *without* a leading
10079 '-' character e.g. ("march=x86-64"). Finally, clean up. */
10082 driver_get_configure_time_options (void (*cb) (const char *option,
10088 obstack_init (&obstack);
10089 init_opts_obstack ();
10092 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
10093 do_option_spec (option_default_specs[i].name,
10094 option_default_specs[i].spec);
10096 for (i = 0; (int) i < n_switches; i++)
10098 gcc_assert (switches[i].part1);
10099 (*cb) (switches[i].part1, user_data);
10102 obstack_free (&opts_obstack, NULL);
10103 obstack_free (&obstack, NULL);