1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987-2020 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 */
39 #include "opt-suggestions.h"
41 #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 #ifdef TARGET_EXECUTABLE_SUFFIX
174 #define HAVE_TARGET_EXECUTABLE_SUFFIX
176 #define TARGET_EXECUTABLE_SUFFIX ""
179 /* By default there is no special suffix for host executables. */
180 #ifdef HOST_EXECUTABLE_SUFFIX
181 #define HAVE_HOST_EXECUTABLE_SUFFIX
183 #define HOST_EXECUTABLE_SUFFIX ""
186 /* By default, the suffix for target object files is ".o". */
187 #ifdef TARGET_OBJECT_SUFFIX
188 #define HAVE_TARGET_OBJECT_SUFFIX
190 #define TARGET_OBJECT_SUFFIX ".o"
193 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
195 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
196 #ifndef LIBRARY_PATH_ENV
197 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
200 /* If a stage of compilation returns an exit status >= 1,
201 compilation of that file ceases. */
203 #define MIN_FATAL_STATUS 1
205 /* Flag set by cppspec.c to 1. */
208 /* Flag set to nonzero if an @file argument has been supplied to gcc. */
209 static bool at_file_supplied;
211 /* Definition of string containing the arguments given to configure. */
212 #include "configargs.h"
214 /* Flag saying to print the command line options understood by gcc and its
217 static int print_help_list;
219 /* Flag saying to print the version of gcc and its sub-processes. */
221 static int print_version;
223 /* Flag that stores string prefix for which we provide bash completion. */
225 static const char *completion = NULL;
227 /* Flag indicating whether we should ONLY print the command and
228 arguments (like verbose_flag) without executing the command.
229 Displayed arguments are quoted so that the generated command
230 line is suitable for execution. This is intended for use in
231 shell scripts to capture the driver-generated command line. */
232 static int verbose_only_flag;
234 /* Flag indicating how to print command line options of sub-processes. */
236 static int print_subprocess_help;
238 /* Linker suffix passed to -fuse-ld=... */
239 static const char *use_ld;
241 /* Whether we should report subprocess execution times to a file. */
243 FILE *report_times_to_file = NULL;
245 /* Nonzero means place this string before uses of /, so that include
246 and library files can be found in an alternate location. */
248 #ifdef TARGET_SYSTEM_ROOT
249 #define DEFAULT_TARGET_SYSTEM_ROOT (TARGET_SYSTEM_ROOT)
251 #define DEFAULT_TARGET_SYSTEM_ROOT (0)
253 static const char *target_system_root = DEFAULT_TARGET_SYSTEM_ROOT;
255 /* Nonzero means pass the updated target_system_root to the compiler. */
257 static int target_system_root_changed;
259 /* Nonzero means append this string to target_system_root. */
261 static const char *target_sysroot_suffix = 0;
263 /* Nonzero means append this string to target_system_root for headers. */
265 static const char *target_sysroot_hdrs_suffix = 0;
267 /* Nonzero means write "temp" files in source directory
268 and use the source file's name in them, and don't delete them. */
270 static enum save_temps {
271 SAVE_TEMPS_NONE, /* no -save-temps */
272 SAVE_TEMPS_CWD, /* -save-temps in current directory */
273 SAVE_TEMPS_DUMP, /* -save-temps in dumpdir */
274 SAVE_TEMPS_OBJ /* -save-temps in object directory */
277 /* Set this iff the dumppfx implied by a -save-temps=* option is to
278 override a -dumpdir option, if any. */
279 static bool save_temps_overrides_dumpdir = false;
281 /* -dumpdir, -dumpbase and -dumpbase-ext flags passed in, possibly
282 rearranged as they are to be passed down, e.g., dumpbase and
283 dumpbase_ext may be cleared if integrated with dumpdir or
285 static char *dumpdir, *dumpbase, *dumpbase_ext;
287 /* Usually the length of the string in dumpdir. However, during
288 linking, it may be shortened to omit a driver-added trailing dash,
289 by then replaced with a trailing period, that is still to be passed
290 to sub-processes in -dumpdir, but not to be generally used in spec
291 filename expansions. See maybe_run_linker. */
292 static size_t dumpdir_length = 0;
294 /* Set if the last character in dumpdir is (or was) a dash that the
295 driver added to dumpdir after dumpbase or linker output name. */
296 static bool dumpdir_trailing_dash_added = false;
298 /* Basename of dump and aux outputs, computed from dumpbase (given or
299 derived from output name), to override input_basename in non-%w %b
301 static char *outbase;
302 static size_t outbase_length = 0;
304 /* The compiler version. */
306 static const char *compiler_version;
308 /* The target version. */
310 static const char *const spec_version = DEFAULT_TARGET_VERSION;
312 /* The target machine. */
314 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
315 static const char *spec_host_machine = DEFAULT_REAL_TARGET_MACHINE;
317 /* List of offload targets. Separated by colon. Empty string for
318 -foffload=disable. */
320 static char *offload_targets = NULL;
322 /* Nonzero if cross-compiling.
323 When -b is used, the value comes from the `specs' file. */
325 #ifdef CROSS_DIRECTORY_STRUCTURE
326 static const char *cross_compile = "1";
328 static const char *cross_compile = "0";
331 /* Greatest exit code of sub-processes that has been encountered up to
333 static int greatest_status = 1;
335 /* This is the obstack which we use to allocate many strings. */
337 static struct obstack obstack;
339 /* This is the obstack to build an environment variable to pass to
340 collect2 that describes all of the relevant switches of what to
341 pass the compiler in building the list of pointers to constructors
344 static struct obstack collect_obstack;
346 /* Forward declaration for prototypes. */
350 static void init_spec (void);
351 static void store_arg (const char *, int, int);
352 static void insert_wrapper (const char *);
353 static char *load_specs (const char *);
354 static void read_specs (const char *, bool, bool);
355 static void set_spec (const char *, const char *, bool);
356 static struct compiler *lookup_compiler (const char *, size_t, const char *);
357 static char *build_search_list (const struct path_prefix *, const char *,
359 static void xputenv (const char *);
360 static void putenv_from_prefixes (const struct path_prefix *, const char *,
362 static int access_check (const char *, int);
363 static char *find_a_file (const struct path_prefix *, const char *, int, bool);
364 static void add_prefix (struct path_prefix *, const char *, const char *,
366 static void add_sysrooted_prefix (struct path_prefix *, const char *,
367 const char *, int, int, int);
368 static char *skip_whitespace (char *);
369 static void delete_if_ordinary (const char *);
370 static void delete_temp_files (void);
371 static void delete_failure_queue (void);
372 static void clear_failure_queue (void);
373 static int check_live_switch (int, int);
374 static const char *handle_braces (const char *);
375 static inline bool input_suffix_matches (const char *, const char *);
376 static inline bool switch_matches (const char *, const char *, int);
377 static inline void mark_matching_switches (const char *, const char *, int);
378 static inline void process_marked_switches (void);
379 static const char *process_brace_body (const char *, const char *, const char *, int, int);
380 static const struct spec_function *lookup_spec_function (const char *);
381 static const char *eval_spec_function (const char *, const char *, const char *);
382 static const char *handle_spec_function (const char *, bool *, const char *);
383 static char *save_string (const char *, int);
384 static void set_collect_gcc_options (void);
385 static int do_spec_1 (const char *, int, const char *);
386 static int do_spec_2 (const char *, const char *);
387 static void do_option_spec (const char *, const char *);
388 static void do_self_spec (const char *);
389 static const char *find_file (const char *);
390 static int is_directory (const char *, bool);
391 static const char *validate_switches (const char *, bool, bool);
392 static void validate_all_switches (void);
393 static inline void validate_switches_from_spec (const char *, bool);
394 static void give_switch (int, int);
395 static int default_arg (const char *, int);
396 static void set_multilib_dir (void);
397 static void print_multilib_info (void);
398 static void display_help (void);
399 static void add_preprocessor_option (const char *, int);
400 static void add_assembler_option (const char *, int);
401 static void add_linker_option (const char *, int);
402 static void process_command (unsigned int, struct cl_decoded_option *);
403 static int execute (void);
404 static void alloc_args (void);
405 static void clear_args (void);
406 static void fatal_signal (int);
407 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
408 static void init_gcc_specs (struct obstack *, const char *, const char *,
411 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
412 static const char *convert_filename (const char *, int, int);
415 static void try_generate_repro (const char **argv);
416 static const char *getenv_spec_function (int, const char **);
417 static const char *if_exists_spec_function (int, const char **);
418 static const char *if_exists_else_spec_function (int, const char **);
419 static const char *sanitize_spec_function (int, const char **);
420 static const char *replace_outfile_spec_function (int, const char **);
421 static const char *remove_outfile_spec_function (int, const char **);
422 static const char *version_compare_spec_function (int, const char **);
423 static const char *include_spec_function (int, const char **);
424 static const char *find_file_spec_function (int, const char **);
425 static const char *find_plugindir_spec_function (int, const char **);
426 static const char *print_asm_header_spec_function (int, const char **);
427 static const char *compare_debug_dump_opt_spec_function (int, const char **);
428 static const char *compare_debug_self_opt_spec_function (int, const char **);
429 static const char *pass_through_libs_spec_func (int, const char **);
430 static const char *dumps_spec_func (int, const char **);
431 static const char *greater_than_spec_func (int, const char **);
432 static const char *debug_level_greater_than_spec_func (int, const char **);
433 static const char *find_fortran_preinclude_file (int, const char **);
434 static char *convert_white_space (char *);
435 static char *quote_spec (char *);
436 static char *quote_spec_arg (char *);
437 static bool not_actual_file_p (const char *);
440 /* The Specs Language
442 Specs are strings containing lines, each of which (if not blank)
443 is made up of a program name, and arguments separated by spaces.
444 The program name must be exact and start from root, since no path
445 is searched and it is unreliable to depend on the current working directory.
446 Redirection of input or output is not supported; the subprograms must
447 accept filenames saying what files to read and write.
449 In addition, the specs can contain %-sequences to substitute variable text
450 or for conditional text. Here is a table of all defined %-sequences.
451 Note that spaces are not generated automatically around the results of
452 expanding these sequences; therefore, you can concatenate them together
453 or with constant text in a single argument.
455 %% substitute one % into the program name or argument.
456 %" substitute an empty argument.
457 %i substitute the name of the input file being processed.
458 %b substitute the basename for outputs related with the input file
459 being processed. This is often a substring of the input file name,
460 up to (and not including) the last period but, unless %w is active,
461 it is affected by the directory selected by -save-temps=*, by
462 -dumpdir, and, in case of multiple compilations, even by -dumpbase
463 and -dumpbase-ext and, in case of linking, by the linker output
464 name. When %w is active, it derives the main output name only from
465 the input file base name; when it is not, it names aux/dump output
467 %B same as %b, but include the input file suffix (text after the last
470 substitute a file name that has suffix SUFFIX and is chosen
471 once per compilation, and mark the argument a la %d. To reduce
472 exposure to denial-of-service attacks, the file name is now
473 chosen in a way that is hard to predict even when previously
474 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
475 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
476 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
477 had been pre-processed. Previously, %g was simply substituted
478 with a file name chosen once per compilation, without regard
479 to any appended suffix (which was therefore treated just like
480 ordinary text), making such attacks more likely to succeed.
482 like %g, but if -pipe is in effect, expands simply to "-".
484 like %g, but if -pipe is in effect, expands to nothing. (We have both
485 %| and %m to accommodate differences between system assemblers; see
486 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
488 like %g, but generates a new temporary file name even if %uSUFFIX
491 substitutes the last file name generated with %uSUFFIX, generating a
492 new one if there is no such last file name. In the absence of any
493 %uSUFFIX, this is just like %gSUFFIX, except they don't share
494 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
495 would involve the generation of two distinct file names, one
496 for each `%g.s' and another for each `%U.s'. Previously, %U was
497 simply substituted with a file name chosen for the previous %u,
498 without regard to any appended suffix.
500 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
501 writable, and if save-temps is off; otherwise, substitute the name
502 of a temporary file, just like %u. This temporary file is not
503 meant for communication between processes, but rather as a junk
506 substitutes .SUFFIX for the suffixes of a matched switch's args when
507 it is subsequently output with %*. SUFFIX is terminated by the next
509 %d marks the argument containing or following the %d as a
510 temporary file name, so that file will be deleted if GCC exits
511 successfully. Unlike %g, this contributes no text to the argument.
512 %w marks the argument containing or following the %w as the
513 "output file" of this compilation. This puts the argument
514 into the sequence of arguments that %o will substitute later.
515 %V indicates that this compilation produces no "output file".
517 like %{...} but marks the last argument supplied within as a file
518 to be deleted on failure.
520 like %{...} but puts the result into a FILE and substitutes @FILE
521 if an @file argument has been supplied.
522 %o substitutes the names of all the output files, with spaces
523 automatically placed around them. You should write spaces
524 around the %o as well or the results are undefined.
525 %o is for use in the specs for running the linker.
526 Input files whose names have no recognized suffix are not compiled
527 at all, but they are included among the output files, so they will
529 %O substitutes the suffix for object files. Note that this is
530 handled specially when it immediately follows %g, %u, or %U
531 (with or without a suffix argument) because of the need for
532 those to form complete file names. The handling is such that
533 %O is treated exactly as if it had already been substituted,
534 except that %g, %u, and %U do not currently support additional
535 SUFFIX characters following %O as they would following, for
537 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
538 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
539 and -B options) and -imultilib as necessary.
540 %s current argument is the name of a library or startup file of some sort.
541 Search for that file in a standard list of directories
542 and substitute the full name found.
543 %eSTR Print STR as an error message. STR is terminated by a newline.
544 Use this when inconsistent options are detected.
545 %nSTR Print STR as a notice. STR is terminated by a newline.
546 %x{OPTION} Accumulate an option for %X.
547 %X Output the accumulated linker options specified by compilations.
548 %Y Output the accumulated assembler options specified by compilations.
549 %Z Output the accumulated preprocessor options specified by compilations.
550 %a process ASM_SPEC as a spec.
551 This allows config.h to specify part of the spec for running as.
552 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
553 used here. This can be used to run a post-processor after the
554 assembler has done its job.
555 %D Dump out a -L option for each directory in startfile_prefixes.
556 If multilib_dir is set, extra entries are generated with it affixed.
557 %l process LINK_SPEC as a spec.
558 %L process LIB_SPEC as a spec.
559 %M Output multilib_os_dir.
560 %G process LIBGCC_SPEC as a spec.
561 %R Output the concatenation of target_system_root and
562 target_sysroot_suffix.
563 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
564 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
565 %C process CPP_SPEC as a spec.
566 %1 process CC1_SPEC as a spec.
567 %2 process CC1PLUS_SPEC as a spec.
568 %* substitute the variable part of a matched option. (See below.)
569 Note that each comma in the substituted string is replaced by
570 a single space. A space is appended after the last substition
571 unless there is more text in current sequence.
572 %<S remove all occurrences of -S from the command line.
573 Note - this command is position dependent. % commands in the
574 spec string before this one will see -S, % commands in the
575 spec string after this one will not.
576 %>S Similar to "%<S", but keep it in the GCC command line.
577 %<S* remove all occurrences of all switches beginning with -S from the
580 Call the named function FUNCTION, passing it ARGS. ARGS is
581 first processed as a nested spec string, then split into an
582 argument vector in the usual fashion. The function returns
583 a string which is processed as if it had appeared literally
584 as part of the current spec.
585 %{S} substitutes the -S switch, if that switch was given to GCC.
586 If that switch was not specified, this substitutes nothing.
587 Here S is a metasyntactic variable.
588 %{S*} substitutes all the switches specified to GCC whose names start
589 with -S. This is used for -o, -I, etc; switches that take
590 arguments. GCC considers `-o foo' as being one switch whose
591 name starts with `o'. %{o*} would substitute this text,
592 including the space; thus, two arguments would be generated.
593 %{S*&T*} likewise, but preserve order of S and T options (the order
594 of S and T in the spec is not significant). Can be any number
595 of ampersand-separated variables; for each the wild card is
596 optional. Useful for CPP as %{D*&U*&A*}.
598 %{S:X} substitutes X, if the -S switch was given to GCC.
599 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
600 %{S*:X} substitutes X if one or more switches whose names start
601 with -S was given to GCC. Normally X is substituted only
602 once, no matter how many such switches appeared. However,
603 if %* appears somewhere in X, then X will be substituted
604 once for each matching switch, with the %* replaced by the
605 part of that switch that matched the '*'. A space will be
606 appended after the last substition unless there is more
607 text in current sequence.
608 %{.S:X} substitutes X, if processing a file with suffix S.
609 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
610 %{,S:X} substitutes X, if processing a file which will use spec S.
611 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
613 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
614 combined with '!', '.', ',', and '*' as above binding stronger
616 If %* appears in X, all of the alternatives must be starred, and
617 only the first matching alternative is substituted.
618 %{%:function(args):X}
619 Call function named FUNCTION with args ARGS. If the function
620 returns non-NULL, then X is substituted, if it returns
621 NULL, it isn't substituted.
622 %{S:X; if S was given to GCC, substitutes X;
623 T:Y; else if T was given to GCC, substitutes Y;
624 :D} else substitutes D. There can be as many clauses as you need.
625 This may be combined with '.', '!', ',', '|', and '*' as above.
627 %(Spec) processes a specification defined in a specs file as *Spec:
629 The switch matching text S in a %{S}, %{S:X}, or similar construct can use
630 a backslash to ignore the special meaning of the character following it,
631 thus allowing literal matching of a character that is otherwise specially
632 treated. For example, %{std=iso9899\:1999:X} substitutes X if the
633 -std=iso9899:1999 option is given.
635 The conditional text X in a %{S:X} or similar construct may contain
636 other nested % constructs or spaces, or even newlines. They are
637 processed as usual, as described above. Trailing white space in X is
638 ignored. White space may also appear anywhere on the left side of the
639 colon in these constructs, except between . or * and the corresponding
642 The -O, -f, -g, -m, and -W switches are handled specifically in these
643 constructs. If another value of -O or the negated form of a -f, -m, or
644 -W switch is found later in the command line, the earlier switch
645 value is ignored, except with {S*} where S is just one letter; this
646 passes all matching options.
648 The character | at the beginning of the predicate text is used to indicate
649 that a command should be piped to the following command, but only if -pipe
652 Note that it is built into GCC which switches take arguments and which
653 do not. You might think it would be useful to generalize this to
654 allow each compiler's spec to say which switches take arguments. But
655 this cannot be done in a consistent fashion. GCC cannot even decide
656 which input files have been specified without knowing which switches
657 take arguments, and it must know which input files to compile in order
658 to tell which compilers to run.
660 GCC also knows implicitly that arguments starting in `-l' are to be
661 treated as compiler output files, and passed to the linker in their
662 proper position among the other output files. */
664 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
666 /* config.h can define ASM_SPEC to provide extra args to the assembler
667 or extra switch-translations. */
672 /* config.h can define ASM_FINAL_SPEC to run a post processor after
673 the assembler has run. */
674 #ifndef ASM_FINAL_SPEC
675 #define ASM_FINAL_SPEC \
677 objcopy --extract-dwo \
678 %{c:%{o*:%*}%{!o*:%w%b%O}}%{!c:%U%O} \
680 objcopy --strip-dwo \
681 %{c:%{o*:%*}%{!o*:%w%b%O}}%{!c:%U%O} \
685 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
686 or extra switch-translations. */
691 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
692 or extra switch-translations. */
697 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
698 or extra switch-translations. */
700 #define CC1PLUS_SPEC ""
703 /* config.h can define LINK_SPEC to provide extra args to the linker
704 or extra switch-translations. */
709 /* config.h can define LIB_SPEC to override the default libraries. */
711 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
714 /* When using -fsplit-stack we need to wrap pthread_create, in order
715 to initialize the stack guard. We always use wrapping, rather than
716 shared library ordering, and we keep the wrapper function in
717 libgcc. This is not yet a real spec, though it could become one;
718 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping
719 only works with GNU ld and gold. */
720 #ifdef HAVE_GOLD_NON_DEFAULT_SPLIT_STACK
721 #define STACK_SPLIT_SPEC " %{fsplit-stack: -fuse-ld=gold --wrap=pthread_create}"
723 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}"
727 #define STATIC_LIBASAN_LIBS \
728 " %{static-libasan|static:%:include(libsanitizer.spec)%(link_libasan)}"
729 #ifdef LIBASAN_EARLY_SPEC
730 #define LIBASAN_SPEC STATIC_LIBASAN_LIBS
731 #elif defined(HAVE_LD_STATIC_DYNAMIC)
732 #define LIBASAN_SPEC "%{static-libasan:" LD_STATIC_OPTION \
733 "} -lasan %{static-libasan:" LD_DYNAMIC_OPTION "}" \
736 #define LIBASAN_SPEC "-lasan" STATIC_LIBASAN_LIBS
740 #ifndef LIBASAN_EARLY_SPEC
741 #define LIBASAN_EARLY_SPEC ""
745 #define STATIC_LIBTSAN_LIBS \
746 " %{static-libtsan|static:%:include(libsanitizer.spec)%(link_libtsan)}"
747 #ifdef LIBTSAN_EARLY_SPEC
748 #define LIBTSAN_SPEC STATIC_LIBTSAN_LIBS
749 #elif defined(HAVE_LD_STATIC_DYNAMIC)
750 #define LIBTSAN_SPEC "%{static-libtsan:" LD_STATIC_OPTION \
751 "} -ltsan %{static-libtsan:" LD_DYNAMIC_OPTION "}" \
754 #define LIBTSAN_SPEC "-ltsan" STATIC_LIBTSAN_LIBS
758 #ifndef LIBTSAN_EARLY_SPEC
759 #define LIBTSAN_EARLY_SPEC ""
763 #define STATIC_LIBLSAN_LIBS \
764 " %{static-liblsan|static:%:include(libsanitizer.spec)%(link_liblsan)}"
765 #ifdef LIBLSAN_EARLY_SPEC
766 #define LIBLSAN_SPEC STATIC_LIBLSAN_LIBS
767 #elif defined(HAVE_LD_STATIC_DYNAMIC)
768 #define LIBLSAN_SPEC "%{static-liblsan:" LD_STATIC_OPTION \
769 "} -llsan %{static-liblsan:" LD_DYNAMIC_OPTION "}" \
772 #define LIBLSAN_SPEC "-llsan" STATIC_LIBLSAN_LIBS
776 #ifndef LIBLSAN_EARLY_SPEC
777 #define LIBLSAN_EARLY_SPEC ""
780 #ifndef LIBUBSAN_SPEC
781 #define STATIC_LIBUBSAN_LIBS \
782 " %{static-libubsan|static:%:include(libsanitizer.spec)%(link_libubsan)}"
783 #ifdef HAVE_LD_STATIC_DYNAMIC
784 #define LIBUBSAN_SPEC "%{static-libubsan:" LD_STATIC_OPTION \
785 "} -lubsan %{static-libubsan:" LD_DYNAMIC_OPTION "}" \
788 #define LIBUBSAN_SPEC "-lubsan" STATIC_LIBUBSAN_LIBS
792 /* Linker options for compressed debug sections. */
793 #if HAVE_LD_COMPRESS_DEBUG == 0
794 /* No linker support. */
795 #define LINK_COMPRESS_DEBUG_SPEC \
796 " %{gz*:%e-gz is not supported in this configuration} "
797 #elif HAVE_LD_COMPRESS_DEBUG == 1
798 /* GNU style on input, GNU ld options. Reject, not useful. */
799 #define LINK_COMPRESS_DEBUG_SPEC \
800 " %{gz*:%e-gz is not supported in this configuration} "
801 #elif HAVE_LD_COMPRESS_DEBUG == 2
802 /* GNU style, GNU gold options. */
803 #define LINK_COMPRESS_DEBUG_SPEC \
804 " %{gz|gz=zlib-gnu:" LD_COMPRESS_DEBUG_OPTION "=zlib}" \
805 " %{gz=none:" LD_COMPRESS_DEBUG_OPTION "=none}" \
806 " %{gz=zlib:%e-gz=zlib is not supported in this configuration} "
807 #elif HAVE_LD_COMPRESS_DEBUG == 3
808 /* ELF gABI style. */
809 #define LINK_COMPRESS_DEBUG_SPEC \
810 " %{gz|gz=zlib:" LD_COMPRESS_DEBUG_OPTION "=zlib}" \
811 " %{gz=none:" LD_COMPRESS_DEBUG_OPTION "=none}" \
812 " %{gz=zlib-gnu:" LD_COMPRESS_DEBUG_OPTION "=zlib-gnu} "
814 #error Unknown value for HAVE_LD_COMPRESS_DEBUG.
817 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
820 #if defined(REAL_LIBGCC_SPEC)
821 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
822 #elif defined(LINK_LIBGCC_SPECIAL_1)
823 /* Have gcc do the search for libgcc.a. */
824 #define LIBGCC_SPEC "libgcc.a%s"
826 #define LIBGCC_SPEC "-lgcc"
830 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
831 #ifndef STARTFILE_SPEC
832 #define STARTFILE_SPEC \
833 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
836 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
838 #define ENDFILE_SPEC ""
842 #define LINKER_NAME "collect2"
845 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
846 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
851 /* Assembler options for compressed debug sections. */
852 #if HAVE_LD_COMPRESS_DEBUG < 2
853 /* Reject if the linker cannot write compressed debug sections. */
854 #define ASM_COMPRESS_DEBUG_SPEC \
855 " %{gz*:%e-gz is not supported in this configuration} "
856 #else /* HAVE_LD_COMPRESS_DEBUG >= 2 */
857 #if HAVE_AS_COMPRESS_DEBUG == 0
858 /* No assembler support. Ignore silently. */
859 #define ASM_COMPRESS_DEBUG_SPEC \
861 #elif HAVE_AS_COMPRESS_DEBUG == 1
862 /* GNU style, GNU as options. */
863 #define ASM_COMPRESS_DEBUG_SPEC \
864 " %{gz|gz=zlib-gnu:" AS_COMPRESS_DEBUG_OPTION "}" \
865 " %{gz=none:" AS_NO_COMPRESS_DEBUG_OPTION "}" \
866 " %{gz=zlib:%e-gz=zlib is not supported in this configuration} "
867 #elif HAVE_AS_COMPRESS_DEBUG == 2
868 /* ELF gABI style. */
869 #define ASM_COMPRESS_DEBUG_SPEC \
870 " %{gz|gz=zlib:" AS_COMPRESS_DEBUG_OPTION "=zlib}" \
871 " %{gz=none:" AS_COMPRESS_DEBUG_OPTION "=none}" \
872 " %{gz=zlib-gnu:" AS_COMPRESS_DEBUG_OPTION "=zlib-gnu} "
874 #error Unknown value for HAVE_AS_COMPRESS_DEBUG.
876 #endif /* HAVE_LD_COMPRESS_DEBUG >= 2 */
878 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
880 #ifndef ASM_DEBUG_SPEC
881 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
882 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
883 # define ASM_DEBUG_SPEC \
884 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
885 ? "%{%:debug-level-gt(0):" \
886 "%{gdwarf*:--gdwarf2}%{!gdwarf*:%{g*:--gstabs}}}" ASM_MAP \
887 : "%{%:debug-level-gt(0):" \
888 "%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
890 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
891 # define ASM_DEBUG_SPEC "%{g*:%{%:debug-level-gt(0):--gstabs}}" ASM_MAP
893 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
894 # define ASM_DEBUG_SPEC "%{g*:%{%:debug-level-gt(0):--gdwarf2}}" ASM_MAP
898 #ifndef ASM_DEBUG_SPEC
899 # define ASM_DEBUG_SPEC ""
902 /* Here is the spec for running the linker, after compiling all files. */
904 /* This is overridable by the target in case they need to specify the
905 -lgcc and -lc order specially, yet not require them to override all
906 of LINK_COMMAND_SPEC. */
907 #ifndef LINK_GCC_C_SEQUENCE_SPEC
908 #define LINK_GCC_C_SEQUENCE_SPEC "%G %{!nolibc:%L %G}"
911 #ifndef LINK_SSP_SPEC
912 #ifdef TARGET_LIBC_PROVIDES_SSP
913 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
914 "|fstack-protector-strong|fstack-protector-explicit:}"
916 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
917 "|fstack-protector-strong|fstack-protector-explicit" \
918 ":-lssp_nonshared -lssp}"
922 #ifdef ENABLE_DEFAULT_PIE
923 #define PIE_SPEC "!no-pie"
924 #define NO_FPIE1_SPEC "fno-pie"
925 #define FPIE1_SPEC NO_FPIE1_SPEC ":;"
926 #define NO_FPIE2_SPEC "fno-PIE"
927 #define FPIE2_SPEC NO_FPIE2_SPEC ":;"
928 #define NO_FPIE_SPEC NO_FPIE1_SPEC "|" NO_FPIE2_SPEC
929 #define FPIE_SPEC NO_FPIE_SPEC ":;"
930 #define NO_FPIC1_SPEC "fno-pic"
931 #define FPIC1_SPEC NO_FPIC1_SPEC ":;"
932 #define NO_FPIC2_SPEC "fno-PIC"
933 #define FPIC2_SPEC NO_FPIC2_SPEC ":;"
934 #define NO_FPIC_SPEC NO_FPIC1_SPEC "|" NO_FPIC2_SPEC
935 #define FPIC_SPEC NO_FPIC_SPEC ":;"
936 #define NO_FPIE1_AND_FPIC1_SPEC NO_FPIE1_SPEC "|" NO_FPIC1_SPEC
937 #define FPIE1_OR_FPIC1_SPEC NO_FPIE1_AND_FPIC1_SPEC ":;"
938 #define NO_FPIE2_AND_FPIC2_SPEC NO_FPIE2_SPEC "|" NO_FPIC2_SPEC
939 #define FPIE2_OR_FPIC2_SPEC NO_FPIE2_AND_FPIC2_SPEC ":;"
940 #define NO_FPIE_AND_FPIC_SPEC NO_FPIE_SPEC "|" NO_FPIC_SPEC
941 #define FPIE_OR_FPIC_SPEC NO_FPIE_AND_FPIC_SPEC ":;"
943 #define PIE_SPEC "pie"
944 #define FPIE1_SPEC "fpie"
945 #define NO_FPIE1_SPEC FPIE1_SPEC ":;"
946 #define FPIE2_SPEC "fPIE"
947 #define NO_FPIE2_SPEC FPIE2_SPEC ":;"
948 #define FPIE_SPEC FPIE1_SPEC "|" FPIE2_SPEC
949 #define NO_FPIE_SPEC FPIE_SPEC ":;"
950 #define FPIC1_SPEC "fpic"
951 #define NO_FPIC1_SPEC FPIC1_SPEC ":;"
952 #define FPIC2_SPEC "fPIC"
953 #define NO_FPIC2_SPEC FPIC2_SPEC ":;"
954 #define FPIC_SPEC FPIC1_SPEC "|" FPIC2_SPEC
955 #define NO_FPIC_SPEC FPIC_SPEC ":;"
956 #define FPIE1_OR_FPIC1_SPEC FPIE1_SPEC "|" FPIC1_SPEC
957 #define NO_FPIE1_AND_FPIC1_SPEC FPIE1_OR_FPIC1_SPEC ":;"
958 #define FPIE2_OR_FPIC2_SPEC FPIE2_SPEC "|" FPIC2_SPEC
959 #define NO_FPIE2_AND_FPIC2_SPEC FPIE1_OR_FPIC2_SPEC ":;"
960 #define FPIE_OR_FPIC_SPEC FPIE_SPEC "|" FPIC_SPEC
961 #define NO_FPIE_AND_FPIC_SPEC FPIE_OR_FPIC_SPEC ":;"
964 #ifndef LINK_PIE_SPEC
967 #define LD_PIE_SPEC "-pie"
970 #define LD_PIE_SPEC ""
972 #define LINK_PIE_SPEC "%{static|shared|r:;" PIE_SPEC ":" LD_PIE_SPEC "} "
975 #ifndef LINK_BUILDID_SPEC
976 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
977 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
981 #ifndef LTO_PLUGIN_SPEC
982 #define LTO_PLUGIN_SPEC ""
985 /* Conditional to test whether the LTO plugin is used or not.
986 FIXME: For slim LTO we will need to enable plugin unconditionally. This
987 still cause problems with PLUGIN_LD != LD and when plugin is built but
988 not useable. For GCC 4.6 we don't support slim LTO and thus we can enable
989 plugin only when LTO is enabled. We still honor explicit
990 -fuse-linker-plugin if the linker used understands -plugin. */
992 /* The linker has some plugin support. */
993 #if HAVE_LTO_PLUGIN > 0
994 /* The linker used has full plugin support, use LTO plugin by default. */
995 #if HAVE_LTO_PLUGIN == 2
996 #define PLUGIN_COND "!fno-use-linker-plugin:%{!fno-lto"
997 #define PLUGIN_COND_CLOSE "}"
999 /* The linker used has limited plugin support, use LTO plugin with explicit
1000 -fuse-linker-plugin. */
1001 #define PLUGIN_COND "fuse-linker-plugin"
1002 #define PLUGIN_COND_CLOSE ""
1004 #define LINK_PLUGIN_SPEC \
1005 "%{" PLUGIN_COND": \
1006 -plugin %(linker_plugin_file) \
1007 -plugin-opt=%(lto_wrapper) \
1008 -plugin-opt=-fresolution=%u.res \
1009 " LTO_PLUGIN_SPEC "\
1010 %{flinker-output=*:-plugin-opt=-linker-output-known} \
1011 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
1012 }" PLUGIN_COND_CLOSE
1014 /* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */
1015 #define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\
1016 %e-fuse-linker-plugin is not supported in this configuration}"
1019 /* Linker command line options for -fsanitize= early on the command line. */
1020 #ifndef SANITIZER_EARLY_SPEC
1021 #define SANITIZER_EARLY_SPEC "\
1022 %{!nostdlib:%{!r:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_EARLY_SPEC "} \
1023 %{%:sanitize(thread):" LIBTSAN_EARLY_SPEC "} \
1024 %{%:sanitize(leak):" LIBLSAN_EARLY_SPEC "}}}}"
1027 /* Linker command line options for -fsanitize= late on the command line. */
1028 #ifndef SANITIZER_SPEC
1029 #define SANITIZER_SPEC "\
1030 %{!nostdlib:%{!r:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_SPEC "\
1031 %{static:%ecannot specify -static with -fsanitize=address}}\
1032 %{%:sanitize(thread):" LIBTSAN_SPEC "\
1033 %{static:%ecannot specify -static with -fsanitize=thread}}\
1034 %{%:sanitize(undefined):" LIBUBSAN_SPEC "}\
1035 %{%:sanitize(leak):" LIBLSAN_SPEC "}}}}"
1038 #ifndef POST_LINK_SPEC
1039 #define POST_LINK_SPEC ""
1042 /* This is the spec to use, once the code for creating the vtable
1043 verification runtime library, libvtv.so, has been created. Currently
1044 the vtable verification runtime functions are in libstdc++, so we use
1045 the spec just below this one. */
1046 #ifndef VTABLE_VERIFICATION_SPEC
1047 #if ENABLE_VTABLE_VERIFY
1048 #define VTABLE_VERIFICATION_SPEC "\
1049 %{!nostdlib:%{!r:%{fvtable-verify=std: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}\
1050 %{fvtable-verify=preinit: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}}}"
1052 #define VTABLE_VERIFICATION_SPEC "\
1053 %{fvtable-verify=none:} \
1054 %{fvtable-verify=std: \
1055 %e-fvtable-verify=std is not supported in this configuration} \
1056 %{fvtable-verify=preinit: \
1057 %e-fvtable-verify=preinit is not supported in this configuration}"
1061 /* -u* was put back because both BSD and SysV seem to support it. */
1062 /* %{static|no-pie|static-pie:} simply prevents an error message:
1063 1. If the target machine doesn't handle -static.
1064 2. If PIE isn't enabled by default.
1065 3. If the target machine doesn't handle -static-pie.
1067 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
1068 scripts which exist in user specified directories, or in standard
1070 /* We pass any -flto flags on to the linker, which is expected
1071 to understand them. In practice, this means it had better be collect2. */
1072 /* %{e*} includes -export-dynamic; see comment in common.opt. */
1073 #ifndef LINK_COMMAND_SPEC
1074 #define LINK_COMMAND_SPEC "\
1075 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
1078 "%{flto|flto=*:%<fcompare-debug*} \
1079 %{flto} %{fno-lto} %{flto=*} %l " LINK_PIE_SPEC \
1080 "%{fuse-ld=*:-fuse-ld=%*} " LINK_COMPRESS_DEBUG_SPEC \
1081 "%X %{o*} %{e*} %{N} %{n} %{r}\
1082 %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!r:%{!nostartfiles:%S}}} \
1083 %{static|no-pie|static-pie:} %@{L*} %(mfwrap) %(link_libgcc) " \
1084 VTABLE_VERIFICATION_SPEC " " SANITIZER_EARLY_SPEC " %o "" \
1085 %{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1):\
1086 %:include(libgomp.spec)%(link_gomp)}\
1087 %{fgnu-tm:%:include(libitm.spec)%(link_itm)}\
1088 %(mflib) " STACK_SPLIT_SPEC "\
1089 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} " SANITIZER_SPEC " \
1090 %{!nostdlib:%{!r:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}}\
1091 %{!nostdlib:%{!r:%{!nostartfiles:%E}}} %{T*} \n%(post_link) }}}}}}"
1094 #ifndef LINK_LIBGCC_SPEC
1095 /* Generate -L options for startfile prefix list. */
1096 # define LINK_LIBGCC_SPEC "%D"
1099 #ifndef STARTFILE_PREFIX_SPEC
1100 # define STARTFILE_PREFIX_SPEC ""
1103 #ifndef SYSROOT_SPEC
1104 # define SYSROOT_SPEC "--sysroot=%R"
1107 #ifndef SYSROOT_SUFFIX_SPEC
1108 # define SYSROOT_SUFFIX_SPEC ""
1111 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
1112 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
1115 static const char *asm_debug = ASM_DEBUG_SPEC;
1116 static const char *cpp_spec = CPP_SPEC;
1117 static const char *cc1_spec = CC1_SPEC;
1118 static const char *cc1plus_spec = CC1PLUS_SPEC;
1119 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
1120 static const char *link_ssp_spec = LINK_SSP_SPEC;
1121 static const char *asm_spec = ASM_SPEC;
1122 static const char *asm_final_spec = ASM_FINAL_SPEC;
1123 static const char *link_spec = LINK_SPEC;
1124 static const char *lib_spec = LIB_SPEC;
1125 static const char *link_gomp_spec = "";
1126 static const char *libgcc_spec = LIBGCC_SPEC;
1127 static const char *endfile_spec = ENDFILE_SPEC;
1128 static const char *startfile_spec = STARTFILE_SPEC;
1129 static const char *linker_name_spec = LINKER_NAME;
1130 static const char *linker_plugin_file_spec = "";
1131 static const char *lto_wrapper_spec = "";
1132 static const char *lto_gcc_spec = "";
1133 static const char *post_link_spec = POST_LINK_SPEC;
1134 static const char *link_command_spec = LINK_COMMAND_SPEC;
1135 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
1136 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
1137 static const char *sysroot_spec = SYSROOT_SPEC;
1138 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
1139 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
1140 static const char *self_spec = "";
1142 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
1143 There should be no need to override these in target dependent files,
1144 but we need to copy them to the specs file so that newer versions
1145 of the GCC driver can correctly drive older tool chains with the
1146 appropriate -B options. */
1148 /* When cpplib handles traditional preprocessing, get rid of this, and
1149 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
1150 that we default the front end language better. */
1151 static const char *trad_capable_cpp =
1152 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}";
1154 /* We don't wrap .d files in %W{} since a missing .d file, and
1155 therefore no dependency entry, confuses make into thinking a .o
1156 file that happens to exist is up-to-date. */
1157 static const char *cpp_unique_options =
1158 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %@{I*&F*} %{P} %I\
1159 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
1160 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
1161 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
1162 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
1163 %{remap} %{g3|ggdb3|gstabs3|gxcoff3|gvms3:-dD}\
1164 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
1165 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
1168 /* This contains cpp options which are common with cc1_options and are passed
1169 only when preprocessing only to avoid duplication. We pass the cc1 spec
1170 options to the preprocessor so that it the cc1 spec may manipulate
1171 options used to set target flags. Those special target flags settings may
1172 in turn cause preprocessor symbols to be defined specially. */
1173 static const char *cpp_options =
1174 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
1175 %{f*} %{g*:%{%:debug-level-gt(0):%{g*}\
1176 %{!fno-working-directory:-fworking-directory}}} %{O*}\
1177 %{undef} %{save-temps*:-fpch-preprocess}";
1179 /* Pass -d* flags, possibly modifying -dumpdir, -dumpbase et al.
1181 Make it easy for a language to override the argument for the
1182 %:dumps specs function call. */
1183 #define DUMPS_OPTIONS(EXTS) \
1184 "%<dumpdir %<dumpbase %<dumpbase-ext %{d*} %:dumps(" EXTS ")"
1186 /* This contains cpp options which are not passed when the preprocessor
1187 output will be used by another program. */
1188 static const char *cpp_debug_options = DUMPS_OPTIONS ("");
1190 /* NB: This is shared amongst all front-ends, except for Ada. */
1191 static const char *cc1_options =
1192 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
1193 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
1194 %1 %{!Q:-quiet} %(cpp_debug_options) %{m*} %{aux-info*}\
1195 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
1196 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
1197 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\
1198 %{-target-help:--target-help}\
1199 %{-version:--version}\
1200 %{-help=*:--help=%*}\
1201 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %w%b.s}}}\
1202 %{fsyntax-only:-o %j} %{-param*}\
1203 %{coverage:-fprofile-arcs -ftest-coverage}\
1204 %{fprofile-arcs|fprofile-generate*|coverage:\
1205 %{!fprofile-update=single:\
1206 %{pthread:-fprofile-update=prefer-atomic}}}";
1208 static const char *asm_options =
1209 "%{-target-help:%:print-asm-header()} "
1211 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
1212 to the assembler equivalents. */
1213 "%{v} %{w:-W} %{I*} "
1215 ASM_COMPRESS_DEBUG_SPEC
1216 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
1218 static const char *invoke_as =
1219 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
1221 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
1222 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
1226 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
1227 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
1231 /* Some compilers have limits on line lengths, and the multilib_select
1232 and/or multilib_matches strings can be very long, so we build them at
1234 static struct obstack multilib_obstack;
1235 static const char *multilib_select;
1236 static const char *multilib_matches;
1237 static const char *multilib_defaults;
1238 static const char *multilib_exclusions;
1239 static const char *multilib_reuse;
1241 /* Check whether a particular argument is a default argument. */
1243 #ifndef MULTILIB_DEFAULTS
1244 #define MULTILIB_DEFAULTS { "" }
1247 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
1249 #ifndef DRIVER_SELF_SPECS
1250 #define DRIVER_SELF_SPECS ""
1253 /* Linking to libgomp implies pthreads. This is particularly important
1254 for targets that use different start files and suchlike. */
1255 #ifndef GOMP_SELF_SPECS
1256 #define GOMP_SELF_SPECS \
1257 "%{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1): " \
1261 /* Likewise for -fgnu-tm. */
1262 #ifndef GTM_SELF_SPECS
1263 #define GTM_SELF_SPECS "%{fgnu-tm: -pthread}"
1266 static const char *const driver_self_specs[] = {
1267 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
1268 DRIVER_SELF_SPECS, CONFIGURE_SPECS, GOMP_SELF_SPECS, GTM_SELF_SPECS
1271 #ifndef OPTION_DEFAULT_SPECS
1272 #define OPTION_DEFAULT_SPECS { "", "" }
1281 static const struct default_spec
1282 option_default_specs[] = { OPTION_DEFAULT_SPECS };
1286 struct user_specs *next;
1287 const char *filename;
1290 static struct user_specs *user_specs_head, *user_specs_tail;
1293 /* Record the mapping from file suffixes for compilation specs. */
1297 const char *suffix; /* Use this compiler for input files
1298 whose names end in this suffix. */
1300 const char *spec; /* To use this compiler, run this spec. */
1302 const char *cpp_spec; /* If non-NULL, substitute this spec
1303 for `%C', rather than the usual
1305 int combinable; /* If nonzero, compiler can deal with
1306 multiple source files at once (IMA). */
1307 int needs_preprocessing; /* If nonzero, source files need to
1308 be run through a preprocessor. */
1311 /* Pointer to a vector of `struct compiler' that gives the spec for
1312 compiling a file, based on its suffix.
1313 A file that does not end in any of these suffixes will be passed
1314 unchanged to the loader and nothing else will be done to it.
1316 An entry containing two 0s is used to terminate the vector.
1318 If multiple entries match a file, the last matching one is used. */
1320 static struct compiler *compilers;
1322 /* Number of entries in `compilers', not counting the null terminator. */
1324 static int n_compilers;
1326 /* The default list of file name suffixes and their compilation specs. */
1328 static const struct compiler default_compilers[] =
1330 /* Add lists of suffixes of known languages here. If those languages
1331 were not present when we built the driver, we will hit these copies
1332 and be given a more meaningful error than "file not used since
1333 linking is not done". */
1334 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
1335 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
1336 {".mii", "#Objective-C++", 0, 0, 0},
1337 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
1338 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
1339 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
1340 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
1341 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
1342 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
1343 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
1344 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
1345 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
1346 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
1347 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
1348 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
1349 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
1350 {".r", "#Ratfor", 0, 0, 0},
1351 {".go", "#Go", 0, 1, 0},
1352 {".d", "#D", 0, 1, 0}, {".dd", "#D", 0, 1, 0}, {".di", "#D", 0, 1, 0},
1353 /* Next come the entries for C. */
1354 {".c", "@c", 0, 0, 1},
1356 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1357 external preprocessor if -save-temps is given. */
1358 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1361 %eGNU C no longer supports -traditional without -E}\
1362 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1363 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1364 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1366 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1367 cc1 %(cpp_unique_options) %(cc1_options)}}}\
1368 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
1370 "%{!E:%e-E or -x required when input is from standard input}\
1371 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
1372 {".h", "@c-header", 0, 0, 0},
1374 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1375 external preprocessor if -save-temps is given. */
1376 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1378 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1379 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1380 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1382 %{!fsyntax-only:%{!S:-o %g.s} \
1383 %{!fdump-ada-spec*:%{!o*:--output-pch=%i.gch}\
1384 %W{o*:--output-pch=%*}}%V}}\
1385 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1386 cc1 %(cpp_unique_options) %(cc1_options)\
1387 %{!fsyntax-only:%{!S:-o %g.s} \
1388 %{!fdump-ada-spec*:%{!o*:--output-pch=%i.gch}\
1389 %W{o*:--output-pch=%*}}%V}}}}}}}", 0, 0, 0},
1390 {".i", "@cpp-output", 0, 0, 0},
1392 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
1393 {".s", "@assembler", 0, 0, 0},
1395 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
1396 {".sx", "@assembler-with-cpp", 0, 0, 0},
1397 {".S", "@assembler-with-cpp", 0, 0, 0},
1398 {"@assembler-with-cpp",
1399 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
1400 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1401 %{E|M|MM:%(cpp_debug_options)}\
1402 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1403 as %(asm_debug) %(asm_options) %|.s %A }}}}"
1405 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1406 %{E|M|MM:%(cpp_debug_options)}\
1407 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1408 as %(asm_debug) %(asm_options) %m.s %A }}}}"
1413 /* Mark end of table. */
1417 /* Number of elements in default_compilers, not counting the terminator. */
1419 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
1421 typedef char *char_p; /* For DEF_VEC_P. */
1423 /* A vector of options to give to the linker.
1424 These options are accumulated by %x,
1425 and substituted into the linker command with %X. */
1426 static vec<char_p> linker_options;
1428 /* A vector of options to give to the assembler.
1429 These options are accumulated by -Wa,
1430 and substituted into the assembler command with %Y. */
1431 static vec<char_p> assembler_options;
1433 /* A vector of options to give to the preprocessor.
1434 These options are accumulated by -Wp,
1435 and substituted into the preprocessor command with %Z. */
1436 static vec<char_p> preprocessor_options;
1439 skip_whitespace (char *p)
1443 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1444 be considered whitespace. */
1445 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1447 else if (*p == '\n' || *p == ' ' || *p == '\t')
1461 /* Structures to keep track of prefixes to try when looking for files. */
1465 const char *prefix; /* String to prepend to the path. */
1466 struct prefix_list *next; /* Next in linked list. */
1467 int require_machine_suffix; /* Don't use without machine_suffix. */
1468 /* 2 means try both machine_suffix and just_machine_suffix. */
1469 int priority; /* Sort key - priority within list. */
1470 int os_multilib; /* 1 if OS multilib scheme should be used,
1471 0 for GCC multilib scheme. */
1476 struct prefix_list *plist; /* List of prefixes to try */
1477 int max_len; /* Max length of a prefix in PLIST */
1478 const char *name; /* Name of this list (used in config stuff) */
1481 /* List of prefixes to try when looking for executables. */
1483 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1485 /* List of prefixes to try when looking for startup (crt0) files. */
1487 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1489 /* List of prefixes to try when looking for include files. */
1491 static struct path_prefix include_prefixes = { 0, 0, "include" };
1493 /* Suffix to attach to directories searched for commands.
1494 This looks like `MACHINE/VERSION/'. */
1496 static const char *machine_suffix = 0;
1498 /* Suffix to attach to directories searched for commands.
1499 This is just `MACHINE/'. */
1501 static const char *just_machine_suffix = 0;
1503 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1505 static const char *gcc_exec_prefix;
1507 /* Adjusted value of standard_libexec_prefix. */
1509 static const char *gcc_libexec_prefix;
1511 /* Default prefixes to attach to command names. */
1513 #ifndef STANDARD_STARTFILE_PREFIX_1
1514 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1516 #ifndef STANDARD_STARTFILE_PREFIX_2
1517 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1520 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1521 #undef MD_EXEC_PREFIX
1522 #undef MD_STARTFILE_PREFIX
1523 #undef MD_STARTFILE_PREFIX_1
1526 /* If no prefixes defined, use the null string, which will disable them. */
1527 #ifndef MD_EXEC_PREFIX
1528 #define MD_EXEC_PREFIX ""
1530 #ifndef MD_STARTFILE_PREFIX
1531 #define MD_STARTFILE_PREFIX ""
1533 #ifndef MD_STARTFILE_PREFIX_1
1534 #define MD_STARTFILE_PREFIX_1 ""
1537 /* These directories are locations set at configure-time based on the
1538 --prefix option provided to configure. Their initializers are
1539 defined in Makefile.in. These paths are not *directly* used when
1540 gcc_exec_prefix is set because, in that case, we know where the
1541 compiler has been installed, and use paths relative to that
1542 location instead. */
1543 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1544 static const char *const standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1545 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1546 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1548 /* For native compilers, these are well-known paths containing
1549 components that may be provided by the system. For cross
1550 compilers, these paths are not used. */
1551 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1552 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1553 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1554 static const char *const standard_startfile_prefix_1
1555 = STANDARD_STARTFILE_PREFIX_1;
1556 static const char *const standard_startfile_prefix_2
1557 = STANDARD_STARTFILE_PREFIX_2;
1559 /* A relative path to be used in finding the location of tools
1560 relative to the driver. */
1561 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1563 /* A prefix to be used when this is an accelerator compiler. */
1564 static const char *const accel_dir_suffix = ACCEL_DIR_SUFFIX;
1566 /* Subdirectory to use for locating libraries. Set by
1567 set_multilib_dir based on the compilation options. */
1569 static const char *multilib_dir;
1571 /* Subdirectory to use for locating libraries in OS conventions. Set by
1572 set_multilib_dir based on the compilation options. */
1574 static const char *multilib_os_dir;
1576 /* Subdirectory to use for locating libraries in multiarch conventions. Set by
1577 set_multilib_dir based on the compilation options. */
1579 static const char *multiarch_dir;
1581 /* Structure to keep track of the specs that have been defined so far.
1582 These are accessed using %(specname) in a compiler or link
1587 /* The following 2 fields must be first */
1588 /* to allow EXTRA_SPECS to be initialized */
1589 const char *name; /* name of the spec. */
1590 const char *ptr; /* available ptr if no static pointer */
1592 /* The following fields are not initialized */
1593 /* by EXTRA_SPECS */
1594 const char **ptr_spec; /* pointer to the spec itself. */
1595 struct spec_list *next; /* Next spec in linked list. */
1596 int name_len; /* length of the name */
1597 bool user_p; /* whether string come from file spec. */
1598 bool alloc_p; /* whether string was allocated */
1599 const char *default_ptr; /* The default value of *ptr_spec. */
1602 #define INIT_STATIC_SPEC(NAME,PTR) \
1603 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, false, false, \
1606 /* List of statically defined specs. */
1607 static struct spec_list static_specs[] =
1609 INIT_STATIC_SPEC ("asm", &asm_spec),
1610 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1611 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1612 INIT_STATIC_SPEC ("asm_options", &asm_options),
1613 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1614 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1615 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1616 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1617 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1618 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1619 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1620 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1621 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1622 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1623 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec),
1624 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1625 INIT_STATIC_SPEC ("link", &link_spec),
1626 INIT_STATIC_SPEC ("lib", &lib_spec),
1627 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec),
1628 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1629 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1630 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1631 INIT_STATIC_SPEC ("version", &compiler_version),
1632 INIT_STATIC_SPEC ("multilib", &multilib_select),
1633 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1634 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1635 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1636 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1637 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1638 INIT_STATIC_SPEC ("multilib_reuse", &multilib_reuse),
1639 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1640 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec),
1641 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec),
1642 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec),
1643 INIT_STATIC_SPEC ("post_link", &post_link_spec),
1644 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1645 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1646 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1647 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1648 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1649 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec),
1650 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1651 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1652 INIT_STATIC_SPEC ("self_spec", &self_spec),
1655 #ifdef EXTRA_SPECS /* additional specs needed */
1656 /* Structure to keep track of just the first two args of a spec_list.
1657 That is all that the EXTRA_SPECS macro gives us. */
1660 const char *const name;
1661 const char *const ptr;
1664 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1665 static struct spec_list *extra_specs = (struct spec_list *) 0;
1668 /* List of dynamically allocates specs that have been defined so far. */
1670 static struct spec_list *specs = (struct spec_list *) 0;
1672 /* List of static spec functions. */
1674 static const struct spec_function static_spec_functions[] =
1676 { "getenv", getenv_spec_function },
1677 { "if-exists", if_exists_spec_function },
1678 { "if-exists-else", if_exists_else_spec_function },
1679 { "sanitize", sanitize_spec_function },
1680 { "replace-outfile", replace_outfile_spec_function },
1681 { "remove-outfile", remove_outfile_spec_function },
1682 { "version-compare", version_compare_spec_function },
1683 { "include", include_spec_function },
1684 { "find-file", find_file_spec_function },
1685 { "find-plugindir", find_plugindir_spec_function },
1686 { "print-asm-header", print_asm_header_spec_function },
1687 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function },
1688 { "compare-debug-self-opt", compare_debug_self_opt_spec_function },
1689 { "pass-through-libs", pass_through_libs_spec_func },
1690 { "dumps", dumps_spec_func },
1691 { "gt", greater_than_spec_func },
1692 { "debug-level-gt", debug_level_greater_than_spec_func },
1693 { "fortran-preinclude-file", find_fortran_preinclude_file},
1694 #ifdef EXTRA_SPEC_FUNCTIONS
1695 EXTRA_SPEC_FUNCTIONS
1700 static int processing_spec_function;
1702 /* Add appropriate libgcc specs to OBSTACK, taking into account
1703 various permutations of -shared-libgcc, -shared, and such. */
1705 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1707 #ifndef USE_LD_AS_NEEDED
1708 #define USE_LD_AS_NEEDED 0
1712 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1713 const char *static_name, const char *eh_name)
1717 #if USE_LD_AS_NEEDED
1718 buf = concat ("%{static|static-libgcc|static-pie:", static_name, " ", eh_name, "}"
1719 "%{!static:%{!static-libgcc:%{!static-pie:"
1720 "%{!shared-libgcc:",
1721 static_name, " " LD_AS_NEEDED_OPTION " ",
1722 shared_name, " " LD_NO_AS_NEEDED_OPTION
1725 shared_name, "%{!shared: ", static_name, "}"
1728 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}"
1729 "%{!static:%{!static-libgcc:"
1731 "%{!shared-libgcc:", static_name, " ", eh_name, "}"
1732 "%{shared-libgcc:", shared_name, " ", static_name, "}"
1736 "%{shared-libgcc:", shared_name, "}"
1737 "%{!shared-libgcc:", static_name, "}"
1740 "%{shared:", shared_name, "}"
1745 obstack_grow (obstack, buf, strlen (buf));
1748 #endif /* ENABLE_SHARED_LIBGCC */
1750 /* Initialize the specs lookup routines. */
1755 struct spec_list *next = (struct spec_list *) 0;
1756 struct spec_list *sl = (struct spec_list *) 0;
1760 return; /* Already initialized. */
1763 fnotice (stderr, "Using built-in specs.\n");
1766 extra_specs = XCNEWVEC (struct spec_list, ARRAY_SIZE (extra_specs_1));
1768 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1770 sl = &extra_specs[i];
1771 sl->name = extra_specs_1[i].name;
1772 sl->ptr = extra_specs_1[i].ptr;
1774 sl->name_len = strlen (sl->name);
1775 sl->ptr_spec = &sl->ptr;
1776 gcc_assert (sl->ptr_spec != NULL);
1777 sl->default_ptr = sl->ptr;
1782 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1784 sl = &static_specs[i];
1789 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1790 /* ??? If neither -shared-libgcc nor --static-libgcc was
1791 seen, then we should be making an educated guess. Some proposed
1792 heuristics for ELF include:
1794 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1795 program will be doing dynamic loading, which will likely
1796 need the shared libgcc.
1798 (2) If "-ldl", then it's also a fair bet that we're doing
1801 (3) For each ET_DYN we're linking against (either through -lfoo
1802 or /some/path/foo.so), check to see whether it or one of
1803 its dependencies depends on a shared libgcc.
1807 If the runtime is fixed to look for program headers instead
1808 of calling __register_frame_info at all, for each object,
1809 use the shared libgcc if any EH symbol referenced.
1811 If crtstuff is fixed to not invoke __register_frame_info
1812 automatically, for each object, use the shared libgcc if
1813 any non-empty unwind section found.
1815 Doing any of this probably requires invoking an external program to
1816 do the actual object file scanning. */
1818 const char *p = libgcc_spec;
1821 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1822 when given the proper command line arguments. */
1825 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1827 init_gcc_specs (&obstack,
1829 #ifdef USE_LIBUNWIND_EXCEPTIONS
1835 #ifdef USE_LIBUNWIND_EXCEPTIONS
1836 # ifdef HAVE_LD_STATIC_DYNAMIC
1837 " %{!static:%{!static-pie:" LD_STATIC_OPTION "}} -lunwind"
1838 " %{!static:%{!static-pie:" LD_DYNAMIC_OPTION "}}"
1848 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1850 /* Ug. We don't know shared library extensions. Hope that
1851 systems that use this form don't do shared libraries. */
1852 init_gcc_specs (&obstack,
1856 #ifdef USE_LIBUNWIND_EXCEPTIONS
1865 obstack_1grow (&obstack, *p);
1866 in_sep = (*p == ' ');
1871 obstack_1grow (&obstack, '\0');
1872 libgcc_spec = XOBFINISH (&obstack, const char *);
1875 #ifdef USE_AS_TRADITIONAL_FORMAT
1876 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1878 static const char tf[] = "--traditional-format ";
1879 obstack_grow (&obstack, tf, sizeof (tf) - 1);
1880 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1881 asm_spec = XOBFINISH (&obstack, const char *);
1885 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \
1886 defined LINKER_HASH_STYLE
1887 # ifdef LINK_BUILDID_SPEC
1888 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1889 obstack_grow (&obstack, LINK_BUILDID_SPEC, sizeof (LINK_BUILDID_SPEC) - 1);
1891 # ifdef LINK_EH_SPEC
1892 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1893 obstack_grow (&obstack, LINK_EH_SPEC, sizeof (LINK_EH_SPEC) - 1);
1895 # ifdef LINKER_HASH_STYLE
1896 /* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had
1899 static const char hash_style[] = "--hash-style=";
1900 obstack_grow (&obstack, hash_style, sizeof (hash_style) - 1);
1901 obstack_grow (&obstack, LINKER_HASH_STYLE, sizeof (LINKER_HASH_STYLE) - 1);
1902 obstack_1grow (&obstack, ' ');
1905 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1906 link_spec = XOBFINISH (&obstack, const char *);
1912 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1913 removed; If the spec starts with a + then SPEC is added to the end of the
1917 set_spec (const char *name, const char *spec, bool user_p)
1919 struct spec_list *sl;
1920 const char *old_spec;
1921 int name_len = strlen (name);
1924 /* If this is the first call, initialize the statically allocated specs. */
1927 struct spec_list *next = (struct spec_list *) 0;
1928 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1930 sl = &static_specs[i];
1937 /* See if the spec already exists. */
1938 for (sl = specs; sl; sl = sl->next)
1939 if (name_len == sl->name_len && !strcmp (sl->name, name))
1944 /* Not found - make it. */
1945 sl = XNEW (struct spec_list);
1946 sl->name = xstrdup (name);
1947 sl->name_len = name_len;
1948 sl->ptr_spec = &sl->ptr;
1950 *(sl->ptr_spec) = "";
1952 sl->default_ptr = NULL;
1956 old_spec = *(sl->ptr_spec);
1957 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1958 ? concat (old_spec, spec + 1, NULL)
1963 fnotice (stderr, "Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1966 /* Free the old spec. */
1967 if (old_spec && sl->alloc_p)
1968 free (CONST_CAST (char *, old_spec));
1970 sl->user_p = user_p;
1974 /* Accumulate a command (program name and args), and run it. */
1976 typedef const char *const_char_p; /* For DEF_VEC_P. */
1978 /* Vector of pointers to arguments in the current line of specifications. */
1979 static vec<const_char_p> argbuf;
1981 /* Likewise, but for the current @file. */
1982 static vec<const_char_p> at_file_argbuf;
1984 /* Whether an @file is currently open. */
1985 static bool in_at_file = false;
1987 /* Were the options -c, -S or -E passed. */
1988 static int have_c = 0;
1990 /* Was the option -o passed. */
1991 static int have_o = 0;
1993 /* Was the option -E passed. */
1994 static int have_E = 0;
1996 /* Pointer to output file name passed in with -o. */
1997 static const char *output_file = 0;
1999 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
2000 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
2003 static struct temp_name {
2004 const char *suffix; /* suffix associated with the code. */
2005 int length; /* strlen (suffix). */
2006 int unique; /* Indicates whether %g or %u/%U was used. */
2007 const char *filename; /* associated filename. */
2008 int filename_length; /* strlen (filename). */
2009 struct temp_name *next;
2012 /* Number of commands executed so far. */
2014 static int execution_count;
2016 /* Number of commands that exited with a signal. */
2018 static int signal_count;
2020 /* Allocate the argument vector. */
2026 at_file_argbuf.create (10);
2029 /* Clear out the vector of arguments (after a command is executed). */
2034 argbuf.truncate (0);
2035 at_file_argbuf.truncate (0);
2038 /* Add one argument to the vector at the end.
2039 This is done when a space is seen or at the end of the line.
2040 If DELETE_ALWAYS is nonzero, the arg is a filename
2041 and the file should be deleted eventually.
2042 If DELETE_FAILURE is nonzero, the arg is a filename
2043 and the file should be deleted if this compilation fails. */
2046 store_arg (const char *arg, int delete_always, int delete_failure)
2049 at_file_argbuf.safe_push (arg);
2051 argbuf.safe_push (arg);
2053 if (delete_always || delete_failure)
2056 /* If the temporary file we should delete is specified as
2057 part of a joined argument extract the filename. */
2059 && (p = strrchr (arg, '=')))
2061 record_temp_file (arg, delete_always, delete_failure);
2065 /* Open a temporary @file into which subsequent arguments will be stored. */
2071 fatal_error (input_location, "cannot open nested response file");
2076 /* Close the temporary @file and add @file to the argument list. */
2079 close_at_file (void)
2082 fatal_error (input_location, "cannot close nonexistent response file");
2086 const unsigned int n_args = at_file_argbuf.length ();
2090 char **argv = (char **) alloca (sizeof (char *) * (n_args + 1));
2091 char *temp_file = make_temp_file ("");
2092 char *at_argument = concat ("@", temp_file, NULL);
2093 FILE *f = fopen (temp_file, "w");
2097 /* Copy the strings over. */
2098 for (i = 0; i < n_args; i++)
2099 argv[i] = CONST_CAST (char *, at_file_argbuf[i]);
2102 at_file_argbuf.truncate (0);
2105 fatal_error (input_location, "could not open temporary response file %s",
2108 status = writeargv (argv, f);
2111 fatal_error (input_location,
2112 "could not write to temporary response file %s",
2115 status = fclose (f);
2118 fatal_error (input_location, "could not close temporary response file %s",
2121 store_arg (at_argument, 0, 0);
2123 record_temp_file (temp_file, !save_temps_flag, !save_temps_flag);
2126 /* Load specs from a file name named FILENAME, replacing occurrences of
2127 various different types of line-endings, \r\n, \n\r and just \r, with
2131 load_specs (const char *filename)
2135 struct stat statbuf;
2142 fnotice (stderr, "Reading specs from %s\n", filename);
2144 /* Open and stat the file. */
2145 desc = open (filename, O_RDONLY, 0);
2149 /* This leaves DESC open, but the OS will save us. */
2150 fatal_error (input_location, "cannot read spec file %qs: %m", filename);
2153 if (stat (filename, &statbuf) < 0)
2156 /* Read contents of file into BUFFER. */
2157 buffer = XNEWVEC (char, statbuf.st_size + 1);
2158 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
2161 buffer[readlen] = 0;
2164 specs = XNEWVEC (char, readlen + 1);
2166 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
2172 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
2174 else if (*(buffer_p + 1) == '\n') /* \r\n */
2188 /* Read compilation specs from a file named FILENAME,
2189 replacing the default ones.
2191 A suffix which starts with `*' is a definition for
2192 one of the machine-specific sub-specs. The "suffix" should be
2193 *asm, *cc1, *cpp, *link, *startfile, etc.
2194 The corresponding spec is stored in asm_spec, etc.,
2195 rather than in the `compilers' vector.
2197 Anything invalid in the file is a fatal error. */
2200 read_specs (const char *filename, bool main_p, bool user_p)
2205 buffer = load_specs (filename);
2207 /* Scan BUFFER for specs, putting them in the vector. */
2213 char *in, *out, *p1, *p2, *p3;
2215 /* Advance P in BUFFER to the next nonblank nocomment line. */
2216 p = skip_whitespace (p);
2220 /* Is this a special command that starts with '%'? */
2221 /* Don't allow this for the main specs file, since it would
2222 encourage people to overwrite it. */
2223 if (*p == '%' && !main_p)
2226 while (*p && *p != '\n')
2232 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
2233 && (p1[sizeof "%include" - 1] == ' '
2234 || p1[sizeof "%include" - 1] == '\t'))
2238 p1 += sizeof ("%include");
2239 while (*p1 == ' ' || *p1 == '\t')
2242 if (*p1++ != '<' || p[-2] != '>')
2243 fatal_error (input_location,
2244 "specs %%include syntax malformed after "
2246 (long) (p1 - buffer + 1));
2249 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
2250 read_specs (new_filename ? new_filename : p1, false, user_p);
2253 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
2254 && (p1[sizeof "%include_noerr" - 1] == ' '
2255 || p1[sizeof "%include_noerr" - 1] == '\t'))
2259 p1 += sizeof "%include_noerr";
2260 while (*p1 == ' ' || *p1 == '\t')
2263 if (*p1++ != '<' || p[-2] != '>')
2264 fatal_error (input_location,
2265 "specs %%include syntax malformed after "
2267 (long) (p1 - buffer + 1));
2270 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
2272 read_specs (new_filename, false, user_p);
2273 else if (verbose_flag)
2274 fnotice (stderr, "could not find specs file %s\n", p1);
2277 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
2278 && (p1[sizeof "%rename" - 1] == ' '
2279 || p1[sizeof "%rename" - 1] == '\t'))
2282 struct spec_list *sl;
2283 struct spec_list *newsl;
2285 /* Get original name. */
2286 p1 += sizeof "%rename";
2287 while (*p1 == ' ' || *p1 == '\t')
2290 if (! ISALPHA ((unsigned char) *p1))
2291 fatal_error (input_location,
2292 "specs %%rename syntax malformed after "
2294 (long) (p1 - buffer));
2297 while (*p2 && !ISSPACE ((unsigned char) *p2))
2300 if (*p2 != ' ' && *p2 != '\t')
2301 fatal_error (input_location,
2302 "specs %%rename syntax malformed after "
2304 (long) (p2 - buffer));
2308 while (*p2 == ' ' || *p2 == '\t')
2311 if (! ISALPHA ((unsigned char) *p2))
2312 fatal_error (input_location,
2313 "specs %%rename syntax malformed after "
2315 (long) (p2 - buffer));
2317 /* Get new spec name. */
2319 while (*p3 && !ISSPACE ((unsigned char) *p3))
2323 fatal_error (input_location,
2324 "specs %%rename syntax malformed after "
2326 (long) (p3 - buffer));
2329 for (sl = specs; sl; sl = sl->next)
2330 if (name_len == sl->name_len && !strcmp (sl->name, p1))
2334 fatal_error (input_location,
2335 "specs %s spec was not found to be renamed", p1);
2337 if (strcmp (p1, p2) == 0)
2340 for (newsl = specs; newsl; newsl = newsl->next)
2341 if (strcmp (newsl->name, p2) == 0)
2342 fatal_error (input_location,
2343 "%s: attempt to rename spec %qs to "
2344 "already defined spec %qs",
2349 fnotice (stderr, "rename spec %s to %s\n", p1, p2);
2351 fnotice (stderr, "spec is '%s'\n\n", *(sl->ptr_spec));
2355 set_spec (p2, *(sl->ptr_spec), user_p);
2357 free (CONST_CAST (char *, *(sl->ptr_spec)));
2359 *(sl->ptr_spec) = "";
2364 fatal_error (input_location,
2365 "specs unknown %% command after %ld characters",
2366 (long) (p1 - buffer));
2369 /* Find the colon that should end the suffix. */
2371 while (*p1 && *p1 != ':' && *p1 != '\n')
2374 /* The colon shouldn't be missing. */
2376 fatal_error (input_location,
2377 "specs file malformed after %ld characters",
2378 (long) (p1 - buffer));
2380 /* Skip back over trailing whitespace. */
2382 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
2385 /* Copy the suffix to a string. */
2386 suffix = save_string (p, p2 - p);
2387 /* Find the next line. */
2388 p = skip_whitespace (p1 + 1);
2390 fatal_error (input_location,
2391 "specs file malformed after %ld characters",
2392 (long) (p - buffer));
2395 /* Find next blank line or end of string. */
2396 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
2399 /* Specs end at the blank line and do not include the newline. */
2400 spec = save_string (p, p1 - p);
2403 /* Delete backslash-newline sequences from the spec. */
2408 if (in[0] == '\\' && in[1] == '\n')
2410 else if (in[0] == '#')
2411 while (*in && *in != '\n')
2419 if (suffix[0] == '*')
2421 if (! strcmp (suffix, "*link_command"))
2422 link_command_spec = spec;
2425 set_spec (suffix + 1, spec, user_p);
2431 /* Add this pair to the vector. */
2433 = XRESIZEVEC (struct compiler, compilers, n_compilers + 2);
2435 compilers[n_compilers].suffix = suffix;
2436 compilers[n_compilers].spec = spec;
2438 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2442 link_command_spec = spec;
2445 if (link_command_spec == 0)
2446 fatal_error (input_location, "spec file has no spec for linking");
2448 XDELETEVEC (buffer);
2451 /* Record the names of temporary files we tell compilers to write,
2452 and delete them at the end of the run. */
2454 /* This is the common prefix we use to make temp file names.
2455 It is chosen once for each run of this program.
2456 It is substituted into a spec by %g or %j.
2457 Thus, all temp file names contain this prefix.
2458 In practice, all temp file names start with this prefix.
2460 This prefix comes from the envvar TMPDIR if it is defined;
2461 otherwise, from the P_tmpdir macro if that is defined;
2462 otherwise, in /usr/tmp or /tmp;
2463 or finally the current directory if all else fails. */
2465 static const char *temp_filename;
2467 /* Length of the prefix. */
2469 static int temp_filename_length;
2471 /* Define the list of temporary files to delete. */
2476 struct temp_file *next;
2479 /* Queue of files to delete on success or failure of compilation. */
2480 static struct temp_file *always_delete_queue;
2481 /* Queue of files to delete on failure of compilation. */
2482 static struct temp_file *failure_delete_queue;
2484 /* Record FILENAME as a file to be deleted automatically.
2485 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2486 otherwise delete it in any case.
2487 FAIL_DELETE nonzero means delete it if a compilation step fails;
2488 otherwise delete it in any case. */
2491 record_temp_file (const char *filename, int always_delete, int fail_delete)
2493 char *const name = xstrdup (filename);
2497 struct temp_file *temp;
2498 for (temp = always_delete_queue; temp; temp = temp->next)
2499 if (! filename_cmp (name, temp->name))
2505 temp = XNEW (struct temp_file);
2506 temp->next = always_delete_queue;
2508 always_delete_queue = temp;
2515 struct temp_file *temp;
2516 for (temp = failure_delete_queue; temp; temp = temp->next)
2517 if (! filename_cmp (name, temp->name))
2523 temp = XNEW (struct temp_file);
2524 temp->next = failure_delete_queue;
2526 failure_delete_queue = temp;
2532 /* Delete all the temporary files whose names we previously recorded. */
2534 #ifndef DELETE_IF_ORDINARY
2535 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2538 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2539 if (unlink (NAME) < 0) \
2541 error ("%s: %m", (NAME)); \
2546 delete_if_ordinary (const char *name)
2552 printf ("Delete %s? (y or n) ", name);
2556 while ((c = getchar ()) != '\n' && c != EOF)
2559 if (i == 'y' || i == 'Y')
2561 DELETE_IF_ORDINARY (name, st, verbose_flag);
2565 delete_temp_files (void)
2567 struct temp_file *temp;
2569 for (temp = always_delete_queue; temp; temp = temp->next)
2570 delete_if_ordinary (temp->name);
2571 always_delete_queue = 0;
2574 /* Delete all the files to be deleted on error. */
2577 delete_failure_queue (void)
2579 struct temp_file *temp;
2581 for (temp = failure_delete_queue; temp; temp = temp->next)
2582 delete_if_ordinary (temp->name);
2586 clear_failure_queue (void)
2588 failure_delete_queue = 0;
2591 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2593 If DO_MULTI is true iterate over the paths twice, first with multilib
2594 suffix then without, otherwise iterate over the paths once without
2595 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2596 to avoid visiting the same path twice, but we could do better. For
2597 instance, /usr/lib/../lib is considered different from /usr/lib.
2598 At least EXTRA_SPACE chars past the end of the path passed to
2599 CALLBACK are available for use by the callback.
2600 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2602 Returns the value returned by CALLBACK. */
2605 for_each_path (const struct path_prefix *paths,
2608 void *(*callback) (char *, void *),
2609 void *callback_info)
2611 struct prefix_list *pl;
2612 const char *multi_dir = NULL;
2613 const char *multi_os_dir = NULL;
2614 const char *multiarch_suffix = NULL;
2615 const char *multi_suffix;
2616 const char *just_multi_suffix;
2619 bool skip_multi_dir = false;
2620 bool skip_multi_os_dir = false;
2622 multi_suffix = machine_suffix;
2623 just_multi_suffix = just_machine_suffix;
2624 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0)
2626 multi_dir = concat (multilib_dir, dir_separator_str, NULL);
2627 multi_suffix = concat (multi_suffix, multi_dir, NULL);
2628 just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL);
2630 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0)
2631 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL);
2633 multiarch_suffix = concat (multiarch_dir, dir_separator_str, NULL);
2637 size_t multi_dir_len = 0;
2638 size_t multi_os_dir_len = 0;
2639 size_t multiarch_len = 0;
2641 size_t just_suffix_len;
2645 multi_dir_len = strlen (multi_dir);
2647 multi_os_dir_len = strlen (multi_os_dir);
2648 if (multiarch_suffix)
2649 multiarch_len = strlen (multiarch_suffix);
2650 suffix_len = strlen (multi_suffix);
2651 just_suffix_len = strlen (just_multi_suffix);
2655 len = paths->max_len + extra_space + 1;
2656 len += MAX (MAX (suffix_len, multi_os_dir_len), multiarch_len);
2657 path = XNEWVEC (char, len);
2660 for (pl = paths->plist; pl != 0; pl = pl->next)
2662 len = strlen (pl->prefix);
2663 memcpy (path, pl->prefix, len);
2665 /* Look first in MACHINE/VERSION subdirectory. */
2666 if (!skip_multi_dir)
2668 memcpy (path + len, multi_suffix, suffix_len + 1);
2669 ret = callback (path, callback_info);
2674 /* Some paths are tried with just the machine (ie. target)
2675 subdir. This is used for finding as, ld, etc. */
2677 && pl->require_machine_suffix == 2)
2679 memcpy (path + len, just_multi_suffix, just_suffix_len + 1);
2680 ret = callback (path, callback_info);
2685 /* Now try the multiarch path. */
2687 && !pl->require_machine_suffix && multiarch_dir)
2689 memcpy (path + len, multiarch_suffix, multiarch_len + 1);
2690 ret = callback (path, callback_info);
2695 /* Now try the base path. */
2696 if (!pl->require_machine_suffix
2697 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir))
2699 const char *this_multi;
2700 size_t this_multi_len;
2702 if (pl->os_multilib)
2704 this_multi = multi_os_dir;
2705 this_multi_len = multi_os_dir_len;
2709 this_multi = multi_dir;
2710 this_multi_len = multi_dir_len;
2714 memcpy (path + len, this_multi, this_multi_len + 1);
2718 ret = callback (path, callback_info);
2726 if (multi_dir == NULL && multi_os_dir == NULL)
2729 /* Run through the paths again, this time without multilibs.
2730 Don't repeat any we have already seen. */
2733 free (CONST_CAST (char *, multi_dir));
2735 free (CONST_CAST (char *, multi_suffix));
2736 multi_suffix = machine_suffix;
2737 free (CONST_CAST (char *, just_multi_suffix));
2738 just_multi_suffix = just_machine_suffix;
2741 skip_multi_dir = true;
2744 free (CONST_CAST (char *, multi_os_dir));
2745 multi_os_dir = NULL;
2748 skip_multi_os_dir = true;
2753 free (CONST_CAST (char *, multi_dir));
2754 free (CONST_CAST (char *, multi_suffix));
2755 free (CONST_CAST (char *, just_multi_suffix));
2758 free (CONST_CAST (char *, multi_os_dir));
2764 /* Callback for build_search_list. Adds path to obstack being built. */
2766 struct add_to_obstack_info {
2773 add_to_obstack (char *path, void *data)
2775 struct add_to_obstack_info *info = (struct add_to_obstack_info *) data;
2777 if (info->check_dir && !is_directory (path, false))
2780 if (!info->first_time)
2781 obstack_1grow (info->ob, PATH_SEPARATOR);
2783 obstack_grow (info->ob, path, strlen (path));
2785 info->first_time = false;
2789 /* Add or change the value of an environment variable, outputting the
2790 change to standard error if in verbose mode. */
2792 xputenv (const char *string)
2797 /* Build a list of search directories from PATHS.
2798 PREFIX is a string to prepend to the list.
2799 If CHECK_DIR_P is true we ensure the directory exists.
2800 If DO_MULTI is true, multilib paths are output first, then
2802 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2803 It is also used by the --print-search-dirs flag. */
2806 build_search_list (const struct path_prefix *paths, const char *prefix,
2807 bool check_dir, bool do_multi)
2809 struct add_to_obstack_info info;
2811 info.ob = &collect_obstack;
2812 info.check_dir = check_dir;
2813 info.first_time = true;
2815 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2816 obstack_1grow (&collect_obstack, '=');
2818 for_each_path (paths, do_multi, 0, add_to_obstack, &info);
2820 obstack_1grow (&collect_obstack, '\0');
2821 return XOBFINISH (&collect_obstack, char *);
2824 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2828 putenv_from_prefixes (const struct path_prefix *paths, const char *env_var,
2831 xputenv (build_search_list (paths, env_var, true, do_multi));
2834 /* Check whether NAME can be accessed in MODE. This is like access,
2835 except that it never considers directories to be executable. */
2838 access_check (const char *name, int mode)
2844 if (stat (name, &st) < 0
2845 || S_ISDIR (st.st_mode))
2849 return access (name, mode);
2852 /* Callback for find_a_file. Appends the file name to the directory
2853 path. If the resulting file exists in the right mode, return the
2854 full pathname to the file. */
2856 struct file_at_path_info {
2865 file_at_path (char *path, void *data)
2867 struct file_at_path_info *info = (struct file_at_path_info *) data;
2868 size_t len = strlen (path);
2870 memcpy (path + len, info->name, info->name_len);
2871 len += info->name_len;
2873 /* Some systems have a suffix for executable files.
2874 So try appending that first. */
2875 if (info->suffix_len)
2877 memcpy (path + len, info->suffix, info->suffix_len + 1);
2878 if (access_check (path, info->mode) == 0)
2883 if (access_check (path, info->mode) == 0)
2889 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2890 access to check permissions. If DO_MULTI is true, search multilib
2891 paths then non-multilib paths, otherwise do not search multilib paths.
2892 Return 0 if not found, otherwise return its name, allocated with malloc. */
2895 find_a_file (const struct path_prefix *pprefix, const char *name, int mode,
2898 struct file_at_path_info info;
2900 #ifdef DEFAULT_ASSEMBLER
2901 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2902 return xstrdup (DEFAULT_ASSEMBLER);
2905 #ifdef DEFAULT_LINKER
2906 if (! strcmp (name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2907 return xstrdup (DEFAULT_LINKER);
2910 /* Determine the filename to execute (special case for absolute paths). */
2912 if (IS_ABSOLUTE_PATH (name))
2914 if (access (name, mode) == 0)
2915 return xstrdup (name);
2921 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "";
2922 info.name_len = strlen (info.name);
2923 info.suffix_len = strlen (info.suffix);
2926 return (char*) for_each_path (pprefix, do_multi,
2927 info.name_len + info.suffix_len,
2928 file_at_path, &info);
2931 /* Ranking of prefixes in the sort list. -B prefixes are put before
2934 enum path_prefix_priority
2936 PREFIX_PRIORITY_B_OPT,
2937 PREFIX_PRIORITY_LAST
2940 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2941 order according to PRIORITY. Within each PRIORITY, new entries are
2944 If WARN is nonzero, we will warn if no file is found
2945 through this prefix. WARN should point to an int
2946 which will be set to 1 if this entry is used.
2948 COMPONENT is the value to be passed to update_path.
2950 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2951 the complete value of machine_suffix.
2952 2 means try both machine_suffix and just_machine_suffix. */
2955 add_prefix (struct path_prefix *pprefix, const char *prefix,
2956 const char *component, /* enum prefix_priority */ int priority,
2957 int require_machine_suffix, int os_multilib)
2959 struct prefix_list *pl, **prev;
2962 for (prev = &pprefix->plist;
2963 (*prev) != NULL && (*prev)->priority <= priority;
2964 prev = &(*prev)->next)
2967 /* Keep track of the longest prefix. */
2969 prefix = update_path (prefix, component);
2970 len = strlen (prefix);
2971 if (len > pprefix->max_len)
2972 pprefix->max_len = len;
2974 pl = XNEW (struct prefix_list);
2975 pl->prefix = prefix;
2976 pl->require_machine_suffix = require_machine_suffix;
2977 pl->priority = priority;
2978 pl->os_multilib = os_multilib;
2980 /* Insert after PREV. */
2985 /* Same as add_prefix, but prepending target_system_root to prefix. */
2986 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2988 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2989 const char *component,
2990 /* enum prefix_priority */ int priority,
2991 int require_machine_suffix, int os_multilib)
2993 if (!IS_ABSOLUTE_PATH (prefix))
2994 fatal_error (input_location, "system path %qs is not absolute", prefix);
2996 if (target_system_root)
2998 char *sysroot_no_trailing_dir_separator = xstrdup (target_system_root);
2999 size_t sysroot_len = strlen (target_system_root);
3002 && target_system_root[sysroot_len - 1] == DIR_SEPARATOR)
3003 sysroot_no_trailing_dir_separator[sysroot_len - 1] = '\0';
3005 if (target_sysroot_suffix)
3006 prefix = concat (sysroot_no_trailing_dir_separator,
3007 target_sysroot_suffix, prefix, NULL);
3009 prefix = concat (sysroot_no_trailing_dir_separator, prefix, NULL);
3011 free (sysroot_no_trailing_dir_separator);
3013 /* We have to override this because GCC's notion of sysroot
3014 moves along with GCC. */
3018 add_prefix (pprefix, prefix, component, priority,
3019 require_machine_suffix, os_multilib);
3022 /* Same as add_prefix, but prepending target_sysroot_hdrs_suffix to prefix. */
3025 add_sysrooted_hdrs_prefix (struct path_prefix *pprefix, const char *prefix,
3026 const char *component,
3027 /* enum prefix_priority */ int priority,
3028 int require_machine_suffix, int os_multilib)
3030 if (!IS_ABSOLUTE_PATH (prefix))
3031 fatal_error (input_location, "system path %qs is not absolute", prefix);
3033 if (target_system_root)
3035 char *sysroot_no_trailing_dir_separator = xstrdup (target_system_root);
3036 size_t sysroot_len = strlen (target_system_root);
3039 && target_system_root[sysroot_len - 1] == DIR_SEPARATOR)
3040 sysroot_no_trailing_dir_separator[sysroot_len - 1] = '\0';
3042 if (target_sysroot_hdrs_suffix)
3043 prefix = concat (sysroot_no_trailing_dir_separator,
3044 target_sysroot_hdrs_suffix, prefix, NULL);
3046 prefix = concat (sysroot_no_trailing_dir_separator, prefix, NULL);
3048 free (sysroot_no_trailing_dir_separator);
3050 /* We have to override this because GCC's notion of sysroot
3051 moves along with GCC. */
3055 add_prefix (pprefix, prefix, component, priority,
3056 require_machine_suffix, os_multilib);
3060 /* Execute the command specified by the arguments on the current line of spec.
3061 When using pipes, this includes several piped-together commands
3062 with `|' between them.
3064 Return 0 if successful, -1 if failed. */
3070 int n_commands; /* # of command. */
3072 struct pex_obj *pex;
3075 const char *prog; /* program name. */
3076 const char **argv; /* vector of args. */
3080 struct command *commands; /* each command buffer with above info. */
3082 gcc_assert (!processing_spec_function);
3086 string = find_a_file (&exec_prefixes,
3087 argbuf[0], X_OK, false);
3090 insert_wrapper (wrapper_string);
3093 /* Count # of piped commands. */
3094 for (n_commands = 1, i = 0; argbuf.iterate (i, &arg); i++)
3095 if (strcmp (arg, "|") == 0)
3098 /* Get storage for each command. */
3099 commands = (struct command *) alloca (n_commands * sizeof (struct command));
3101 /* Split argbuf into its separate piped processes,
3102 and record info about each one.
3103 Also search for the programs that are to be run. */
3105 argbuf.safe_push (0);
3107 commands[0].prog = argbuf[0]; /* first command. */
3108 commands[0].argv = argbuf.address ();
3110 if (!wrapper_string)
3112 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false);
3114 commands[0].argv[0] = string;
3117 for (n_commands = 1, i = 0; argbuf.iterate (i, &arg); i++)
3118 if (arg && strcmp (arg, "|") == 0)
3119 { /* each command. */
3120 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
3121 fatal_error (input_location, "%<-pipe%> not supported");
3123 argbuf[i] = 0; /* Termination of command args. */
3124 commands[n_commands].prog = argbuf[i + 1];
3125 commands[n_commands].argv
3126 = &(argbuf.address ())[i + 1];
3127 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
3130 commands[n_commands].argv[0] = string;
3134 /* If -v, print what we are about to do, and maybe query. */
3138 /* For help listings, put a blank line between sub-processes. */
3139 if (print_help_list)
3140 fputc ('\n', stderr);
3142 /* Print each piped command as a separate line. */
3143 for (i = 0; i < n_commands; i++)
3145 const char *const *j;
3147 if (verbose_only_flag)
3149 for (j = commands[i].argv; *j; j++)
3152 for (p = *j; *p; ++p)
3153 if (!ISALNUM ((unsigned char) *p)
3154 && *p != '_' && *p != '/' && *p != '-' && *p != '.')
3158 fprintf (stderr, " \"");
3159 for (p = *j; *p; ++p)
3161 if (*p == '"' || *p == '\\' || *p == '$')
3162 fputc ('\\', stderr);
3165 fputc ('"', stderr);
3167 /* If it's empty, print "". */
3169 fprintf (stderr, " \"\"");
3171 fprintf (stderr, " %s", *j);
3175 for (j = commands[i].argv; *j; j++)
3176 /* If it's empty, print "". */
3178 fprintf (stderr, " \"\"");
3180 fprintf (stderr, " %s", *j);
3182 /* Print a pipe symbol after all but the last command. */
3183 if (i + 1 != n_commands)
3184 fprintf (stderr, " |");
3185 fprintf (stderr, "\n");
3188 if (verbose_only_flag != 0)
3190 /* verbose_only_flag should act as if the spec was
3191 executed, so increment execution_count before
3192 returning. This prevents spurious warnings about
3193 unused linker input files, etc. */
3198 fnotice (stderr, "\nGo ahead? (y or n) ");
3202 while (getchar () != '\n')
3205 if (i != 'y' && i != 'Y')
3210 #ifdef ENABLE_VALGRIND_CHECKING
3211 /* Run the each command through valgrind. To simplify prepending the
3212 path to valgrind and the option "-q" (for quiet operation unless
3213 something triggers), we allocate a separate argv array. */
3215 for (i = 0; i < n_commands; i++)
3221 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
3224 argv = XALLOCAVEC (const char *, argc + 3);
3226 argv[0] = VALGRIND_PATH;
3228 for (j = 2; j < argc + 2; j++)
3229 argv[j] = commands[i].argv[j - 2];
3232 commands[i].argv = argv;
3233 commands[i].prog = argv[0];
3237 /* Run each piped subprocess. */
3239 pex = pex_init (PEX_USE_PIPES | ((report_times || report_times_to_file)
3240 ? PEX_RECORD_TIMES : 0),
3241 progname, temp_filename);
3243 fatal_error (input_location, "%<pex_init%> failed: %m");
3245 for (i = 0; i < n_commands; i++)
3249 const char *string = commands[i].argv[0];
3251 errmsg = pex_run (pex,
3252 ((i + 1 == n_commands ? PEX_LAST : 0)
3253 | (string == commands[i].prog ? PEX_SEARCH : 0)),
3254 string, CONST_CAST (char **, commands[i].argv),
3259 fatal_error (input_location,
3260 err ? G_("cannot execute %qs: %s: %m")
3261 : G_("cannot execute %qs: %s"),
3265 if (i && string != commands[i].prog)
3266 free (CONST_CAST (char *, string));
3271 /* Wait for all the subprocesses to finish. */
3275 struct pex_time *times = NULL;
3278 statuses = (int *) alloca (n_commands * sizeof (int));
3279 if (!pex_get_status (pex, n_commands, statuses))
3280 fatal_error (input_location, "failed to get exit status: %m");
3282 if (report_times || report_times_to_file)
3284 times = (struct pex_time *) alloca (n_commands * sizeof (struct pex_time));
3285 if (!pex_get_times (pex, n_commands, times))
3286 fatal_error (input_location, "failed to get process times: %m");
3291 for (i = 0; i < n_commands; ++i)
3293 int status = statuses[i];
3295 if (WIFSIGNALED (status))
3296 switch (WTERMSIG (status))
3300 /* SIGQUIT and SIGKILL are not available on MinGW. */
3307 /* The user (or environment) did something to the
3308 inferior. Making this an ICE confuses the user into
3309 thinking there's a compiler bug. Much more likely is
3310 the user or OOM killer nuked it. */
3311 fatal_error (input_location,
3312 "%s signal terminated program %s",
3313 strsignal (WTERMSIG (status)),
3319 /* SIGPIPE is a special case. It happens in -pipe mode
3320 when the compiler dies before the preprocessor is
3321 done, or the assembler dies before the compiler is
3322 done. There's generally been an error already, and
3323 this is just fallout. So don't generate another
3324 error unless we would otherwise have succeeded. */
3325 if (signal_count || greatest_status >= MIN_FATAL_STATUS)
3335 /* The inferior failed to catch the signal. */
3336 internal_error_no_backtrace ("%s signal terminated program %s",
3337 strsignal (WTERMSIG (status)),
3340 else if (WIFEXITED (status)
3341 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
3343 /* For ICEs in cc1, cc1obj, cc1plus see if it is
3344 reproducible or not. */
3347 && WEXITSTATUS (status) == ICE_EXIT_CODE
3349 && (p = strrchr (commands[0].argv[0], DIR_SEPARATOR))
3350 && ! strncmp (p + 1, "cc1", 3))
3351 try_generate_repro (commands[0].argv);
3352 if (WEXITSTATUS (status) > greatest_status)
3353 greatest_status = WEXITSTATUS (status);
3357 if (report_times || report_times_to_file)
3359 struct pex_time *pt = ×[i];
3362 ut = ((double) pt->user_seconds
3363 + (double) pt->user_microseconds / 1.0e6);
3364 st = ((double) pt->system_seconds
3365 + (double) pt->system_microseconds / 1.0e6);
3370 fnotice (stderr, "# %s %.2f %.2f\n",
3371 commands[i].prog, ut, st);
3373 if (report_times_to_file)
3376 const char *const *j;
3378 fprintf (report_times_to_file, "%g %g", ut, st);
3380 for (j = &commands[i].prog; *j; j = &commands[i].argv[++c])
3383 for (p = *j; *p; ++p)
3384 if (*p == '"' || *p == '\\' || *p == '$'
3390 fprintf (report_times_to_file, " \"");
3391 for (p = *j; *p; ++p)
3393 if (*p == '"' || *p == '\\' || *p == '$')
3394 fputc ('\\', report_times_to_file);
3395 fputc (*p, report_times_to_file);
3397 fputc ('"', report_times_to_file);
3400 fprintf (report_times_to_file, " %s", *j);
3403 fputc ('\n', report_times_to_file);
3409 if (commands[0].argv[0] != commands[0].prog)
3410 free (CONST_CAST (char *, commands[0].argv[0]));
3416 /* Find all the switches given to us
3417 and make a vector describing them.
3418 The elements of the vector are strings, one per switch given.
3419 If a switch uses following arguments, then the `part1' field
3420 is the switch itself and the `args' field
3421 is a null-terminated vector containing the following arguments.
3422 Bits in the `live_cond' field are:
3423 SWITCH_LIVE to indicate this switch is true in a conditional spec.
3424 SWITCH_FALSE to indicate this switch is overridden by a later switch.
3425 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
3426 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored.
3427 SWITCH_KEEP_FOR_GCC to indicate that this switch, otherwise ignored,
3428 should be included in COLLECT_GCC_OPTIONS.
3429 in all do_spec calls afterwards. Used for %<S from self specs.
3430 The `known' field describes whether this is an internal switch.
3431 The `validated' field describes whether any spec has looked at this switch;
3432 if it remains false at the end of the run, the switch must be meaningless.
3433 The `ordering' field is used to temporarily mark switches that have to be
3434 kept in a specific order. */
3436 #define SWITCH_LIVE (1 << 0)
3437 #define SWITCH_FALSE (1 << 1)
3438 #define SWITCH_IGNORE (1 << 2)
3439 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
3440 #define SWITCH_KEEP_FOR_GCC (1 << 4)
3446 unsigned int live_cond;
3452 static struct switchstr *switches;
3454 static int n_switches;
3456 static int n_switches_alloc;
3458 /* Set to zero if -fcompare-debug is disabled, positive if it's
3459 enabled and we're running the first compilation, negative if it's
3460 enabled and we're running the second compilation. For most of the
3461 time, it's in the range -1..1, but it can be temporarily set to 2
3462 or 3 to indicate that the -fcompare-debug flags didn't come from
3463 the command-line, but rather from the GCC_COMPARE_DEBUG environment
3464 variable, until a synthesized -fcompare-debug flag is added to the
3468 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
3469 int compare_debug_second;
3471 /* Set to the flags that should be passed to the second compilation in
3472 a -fcompare-debug compilation. */
3473 const char *compare_debug_opt;
3475 static struct switchstr *switches_debug_check[2];
3477 static int n_switches_debug_check[2];
3479 static int n_switches_alloc_debug_check[2];
3481 static char *debug_check_temp_file[2];
3483 /* Language is one of three things:
3485 1) The name of a real programming language.
3486 2) NULL, indicating that no one has figured out
3488 3) '*', indicating that the file should be passed
3493 const char *language;
3494 struct compiler *incompiler;
3499 /* Also a vector of input files specified. */
3501 static struct infile *infiles;
3505 static int n_infiles_alloc;
3507 /* True if undefined environment variables encountered during spec processing
3508 are ok to ignore, typically when we're running for --help or --version. */
3510 static bool spec_undefvar_allowed;
3512 /* True if multiple input files are being compiled to a single
3515 static bool combine_inputs;
3517 /* This counts the number of libraries added by lang_specific_driver, so that
3518 we can tell if there were any user supplied any files or libraries. */
3520 static int added_libraries;
3522 /* And a vector of corresponding output files is made up later. */
3524 const char **outfiles;
3526 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3528 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
3529 is true if we should look for an executable suffix. DO_OBJ
3530 is true if we should look for an object suffix. */
3533 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
3534 int do_obj ATTRIBUTE_UNUSED)
3536 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3544 len = strlen (name);
3546 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3547 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
3548 if (do_obj && len > 2
3549 && name[len - 2] == '.'
3550 && name[len - 1] == 'o')
3552 obstack_grow (&obstack, name, len - 2);
3553 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
3554 name = XOBFINISH (&obstack, const char *);
3558 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3559 /* If there is no filetype, make it the executable suffix (which includes
3560 the "."). But don't get confused if we have just "-o". */
3561 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
3564 for (i = len - 1; i >= 0; i--)
3565 if (IS_DIR_SEPARATOR (name[i]))
3568 for (i++; i < len; i++)
3572 obstack_grow (&obstack, name, len);
3573 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
3574 strlen (TARGET_EXECUTABLE_SUFFIX));
3575 name = XOBFINISH (&obstack, const char *);
3582 /* Display the command line switches accepted by gcc. */
3586 printf (_("Usage: %s [options] file...\n"), progname);
3587 fputs (_("Options:\n"), stdout);
3589 fputs (_(" -pass-exit-codes Exit with highest error code from a phase.\n"), stdout);
3590 fputs (_(" --help Display this information.\n"), stdout);
3591 fputs (_(" --target-help Display target specific command line options.\n"), stdout);
3592 fputs (_(" --help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumented}}[,...].\n"), stdout);
3593 fputs (_(" Display specific types of command line options.\n"), stdout);
3595 fputs (_(" (Use '-v --help' to display command line options of sub-processes).\n"), stdout);
3596 fputs (_(" --version Display compiler version information.\n"), stdout);
3597 fputs (_(" -dumpspecs Display all of the built in spec strings.\n"), stdout);
3598 fputs (_(" -dumpversion Display the version of the compiler.\n"), stdout);
3599 fputs (_(" -dumpmachine Display the compiler's target processor.\n"), stdout);
3600 fputs (_(" -print-search-dirs Display the directories in the compiler's search path.\n"), stdout);
3601 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library.\n"), stdout);
3602 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>.\n"), stdout);
3603 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>.\n"), stdout);
3605 -print-multiarch Display the target's normalized GNU triplet, used as\n\
3606 a component in the library path.\n"), stdout);
3607 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc.\n"), stdout);
3609 -print-multi-lib Display the mapping between command line options and\n\
3610 multiple library search directories.\n"), stdout);
3611 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries.\n"), stdout);
3612 fputs (_(" -print-sysroot Display the target libraries directory.\n"), stdout);
3613 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers.\n"), stdout);
3614 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler.\n"), stdout);
3615 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor.\n"), stdout);
3616 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker.\n"), stdout);
3617 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler.\n"), stdout);
3618 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor.\n"), stdout);
3619 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker.\n"), stdout);
3620 fputs (_(" -save-temps Do not delete intermediate files.\n"), stdout);
3621 fputs (_(" -save-temps=<arg> Do not delete intermediate files.\n"), stdout);
3623 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
3624 prefixes to other gcc components.\n"), stdout);
3625 fputs (_(" -pipe Use pipes rather than intermediate files.\n"), stdout);
3626 fputs (_(" -time Time the execution of each subprocess.\n"), stdout);
3627 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>.\n"), stdout);
3628 fputs (_(" -std=<standard> Assume that the input sources are for <standard>.\n"), stdout);
3630 --sysroot=<directory> Use <directory> as the root directory for headers\n\
3631 and libraries.\n"), stdout);
3632 fputs (_(" -B <directory> Add <directory> to the compiler's search paths.\n"), stdout);
3633 fputs (_(" -v Display the programs invoked by the compiler.\n"), stdout);
3634 fputs (_(" -### Like -v but options quoted and commands not executed.\n"), stdout);
3635 fputs (_(" -E Preprocess only; do not compile, assemble or link.\n"), stdout);
3636 fputs (_(" -S Compile only; do not assemble or link.\n"), stdout);
3637 fputs (_(" -c Compile and assemble, but do not link.\n"), stdout);
3638 fputs (_(" -o <file> Place the output into <file>.\n"), stdout);
3639 fputs (_(" -pie Create a dynamically linked position independent\n\
3640 executable.\n"), stdout);
3641 fputs (_(" -shared Create a shared library.\n"), stdout);
3643 -x <language> Specify the language of the following input files.\n\
3644 Permissible languages include: c c++ assembler none\n\
3645 'none' means revert to the default behavior of\n\
3646 guessing the language based on the file's extension.\n\
3650 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3651 passed on to the various sub-processes invoked by %s. In order to pass\n\
3652 other options on to these processes the -W<letter> options must be used.\n\
3655 /* The rest of the options are displayed by invocations of the various
3660 add_preprocessor_option (const char *option, int len)
3662 preprocessor_options.safe_push (save_string (option, len));
3666 add_assembler_option (const char *option, int len)
3668 assembler_options.safe_push (save_string (option, len));
3672 add_linker_option (const char *option, int len)
3674 linker_options.safe_push (save_string (option, len));
3677 /* Allocate space for an input file in infiles. */
3682 if (n_infiles_alloc == 0)
3684 n_infiles_alloc = 16;
3685 infiles = XNEWVEC (struct infile, n_infiles_alloc);
3687 else if (n_infiles_alloc == n_infiles)
3689 n_infiles_alloc *= 2;
3690 infiles = XRESIZEVEC (struct infile, infiles, n_infiles_alloc);
3694 /* Store an input file with the given NAME and LANGUAGE in
3698 add_infile (const char *name, const char *language)
3701 infiles[n_infiles].name = name;
3702 infiles[n_infiles++].language = language;
3705 /* Allocate space for a switch in switches. */
3710 if (n_switches_alloc == 0)
3712 n_switches_alloc = 16;
3713 switches = XNEWVEC (struct switchstr, n_switches_alloc);
3715 else if (n_switches_alloc == n_switches)
3717 n_switches_alloc *= 2;
3718 switches = XRESIZEVEC (struct switchstr, switches, n_switches_alloc);
3722 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3723 as validated if VALIDATED and KNOWN if it is an internal switch. */
3726 save_switch (const char *opt, size_t n_args, const char *const *args,
3727 bool validated, bool known)
3730 switches[n_switches].part1 = opt + 1;
3732 switches[n_switches].args = 0;
3735 switches[n_switches].args = XNEWVEC (const char *, n_args + 1);
3736 memcpy (switches[n_switches].args, args, n_args * sizeof (const char *));
3737 switches[n_switches].args[n_args] = NULL;
3740 switches[n_switches].live_cond = 0;
3741 switches[n_switches].validated = validated;
3742 switches[n_switches].known = known;
3743 switches[n_switches].ordering = 0;
3747 /* Set the SOURCE_DATE_EPOCH environment variable to the current time if it is
3751 set_source_date_epoch_envvar ()
3753 /* Array size is 21 = ceil(log_10(2^64)) + 1 to hold string representations
3754 of 64 bit integers. */
3755 char source_date_epoch[21];
3760 if (tt < (time_t) 0 || errno != 0)
3763 snprintf (source_date_epoch, 21, "%llu", (unsigned long long) tt);
3764 /* Using setenv instead of xputenv because we want the variable to remain
3765 after finalizing so that it's still set in the second run when using
3767 setenv ("SOURCE_DATE_EPOCH", source_date_epoch, 0);
3770 /* Handle an option DECODED that is unknown to the option-processing
3774 driver_unknown_option_callback (const struct cl_decoded_option *decoded)
3776 const char *opt = decoded->arg;
3777 if (opt[1] == 'W' && opt[2] == 'n' && opt[3] == 'o' && opt[4] == '-'
3778 && !(decoded->errors & CL_ERR_NEGATIVE))
3780 /* Leave unknown -Wno-* options for the compiler proper, to be
3781 diagnosed only if there are warnings. */
3782 save_switch (decoded->canonical_option[0],
3783 decoded->canonical_option_num_elements - 1,
3784 &decoded->canonical_option[1], false, true);
3787 if (decoded->opt_index == OPT_SPECIAL_unknown)
3789 /* Give it a chance to define it a spec file. */
3790 save_switch (decoded->canonical_option[0],
3791 decoded->canonical_option_num_elements - 1,
3792 &decoded->canonical_option[1], false, false);
3799 /* Handle an option DECODED that is not marked as CL_DRIVER.
3800 LANG_MASK will always be CL_DRIVER. */
3803 driver_wrong_lang_callback (const struct cl_decoded_option *decoded,
3804 unsigned int lang_mask ATTRIBUTE_UNUSED)
3806 /* At this point, non-driver options are accepted (and expected to
3807 be passed down by specs) unless marked to be rejected by the
3808 driver. Options to be rejected by the driver but accepted by the
3809 compilers proper are treated just like completely unknown
3811 const struct cl_option *option = &cl_options[decoded->opt_index];
3813 if (option->cl_reject_driver)
3814 error ("unrecognized command-line option %qs",
3815 decoded->orig_option_with_args_text);
3817 save_switch (decoded->canonical_option[0],
3818 decoded->canonical_option_num_elements - 1,
3819 &decoded->canonical_option[1], false, true);
3822 static const char *spec_lang = 0;
3823 static int last_language_n_infiles;
3825 /* Parse -foffload option argument. */
3828 handle_foffload_option (const char *arg)
3830 const char *c, *cur, *n, *next, *end;
3833 /* If option argument starts with '-' then no target is specified and we
3834 do not need to parse it. */
3838 end = strchr (arg, '=');
3840 end = strchr (arg, '\0');
3845 next = strchr (cur, ',');
3848 next = (next > end) ? end : next;
3850 target = XNEWVEC (char, next - cur + 1);
3851 memcpy (target, cur, next - cur);
3852 target[next - cur] = '\0';
3854 /* If 'disable' is passed to the option, stop parsing the option and clean
3855 the list of offload targets. */
3856 if (strcmp (target, "disable") == 0)
3858 free (offload_targets);
3859 offload_targets = xstrdup ("");
3863 /* Check that GCC is configured to support the offload target. */
3864 c = OFFLOAD_TARGETS;
3867 n = strchr (c, ',');
3869 n = strchr (c, '\0');
3871 if (next - cur == n - c && strncmp (target, c, n - c) == 0)
3874 c = *n ? n + 1 : NULL;
3878 fatal_error (input_location,
3879 "GCC is not configured to support %s as offload target",
3882 if (!offload_targets)
3884 offload_targets = target;
3889 /* Check that the target hasn't already presented in the list. */
3890 c = offload_targets;
3893 n = strchr (c, ':');
3895 n = strchr (c, '\0');
3897 if (next - cur == n - c && strncmp (c, target, n - c) == 0)
3904 /* If duplicate is not found, append the target to the list. */
3907 size_t offload_targets_len = strlen (offload_targets);
3909 = XRESIZEVEC (char, offload_targets,
3910 offload_targets_len + 1 + next - cur + 1);
3911 offload_targets[offload_targets_len++] = ':';
3912 memcpy (offload_targets + offload_targets_len, target, next - cur + 1);
3917 XDELETEVEC (target);
3921 /* Handle a driver option; arguments and return value as for
3925 driver_handle_option (struct gcc_options *opts,
3926 struct gcc_options *opts_set,
3927 const struct cl_decoded_option *decoded,
3928 unsigned int lang_mask ATTRIBUTE_UNUSED, int kind,
3930 const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED,
3931 diagnostic_context *dc,
3934 size_t opt_index = decoded->opt_index;
3935 const char *arg = decoded->arg;
3936 const char *compare_debug_replacement_opt;
3937 int value = decoded->value;
3938 bool validated = false;
3939 bool do_save = true;
3941 gcc_assert (opts == &global_options);
3942 gcc_assert (opts_set == &global_options_set);
3943 gcc_assert (kind == DK_UNSPECIFIED);
3944 gcc_assert (loc == UNKNOWN_LOCATION);
3945 gcc_assert (dc == global_dc);
3951 struct spec_list *sl;
3953 for (sl = specs; sl; sl = sl->next)
3954 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3955 if (link_command_spec)
3956 printf ("*link_command:\n%s\n\n", link_command_spec);
3960 case OPT_dumpversion:
3961 printf ("%s\n", spec_version);
3964 case OPT_dumpmachine:
3965 printf ("%s\n", spec_machine);
3968 case OPT_dumpfullversion:
3969 printf ("%s\n", BASEVER);
3975 /* CPP driver cannot obtain switch from cc1_options. */
3977 add_preprocessor_option ("--version", strlen ("--version"));
3978 add_assembler_option ("--version", strlen ("--version"));
3979 add_linker_option ("--version", strlen ("--version"));
3982 case OPT__completion_:
3984 completion = decoded->arg;
3988 print_help_list = 1;
3990 /* CPP driver cannot obtain switch from cc1_options. */
3992 add_preprocessor_option ("--help", 6);
3993 add_assembler_option ("--help", 6);
3994 add_linker_option ("--help", 6);
3998 print_subprocess_help = 2;
4001 case OPT__target_help:
4002 print_subprocess_help = 1;
4004 /* CPP driver cannot obtain switch from cc1_options. */
4006 add_preprocessor_option ("--target-help", 13);
4007 add_assembler_option ("--target-help", 13);
4008 add_linker_option ("--target-help", 13);
4011 case OPT__no_sysroot_suffix:
4012 case OPT_pass_exit_codes:
4013 case OPT_print_search_dirs:
4014 case OPT_print_file_name_:
4015 case OPT_print_prog_name_:
4016 case OPT_print_multi_lib:
4017 case OPT_print_multi_directory:
4018 case OPT_print_sysroot:
4019 case OPT_print_multi_os_directory:
4020 case OPT_print_multiarch:
4021 case OPT_print_sysroot_headers_suffix:
4024 /* These options set the variables specified in common.opt
4025 automatically, and do not need to be saved for spec
4030 case OPT_print_libgcc_file_name:
4031 print_file_name = "libgcc.a";
4035 case OPT_fuse_ld_bfd:
4039 case OPT_fuse_ld_gold:
4043 case OPT_fcompare_debug_second:
4044 compare_debug_second = 1;
4047 case OPT_fcompare_debug:
4051 compare_debug_replacement_opt = "-fcompare-debug=";
4053 goto compare_debug_with_arg;
4056 compare_debug_replacement_opt = "-fcompare-debug=-gtoggle";
4058 goto compare_debug_with_arg;
4065 case OPT_fcompare_debug_:
4066 compare_debug_replacement_opt = decoded->canonical_option[0];
4067 compare_debug_with_arg:
4068 gcc_assert (decoded->canonical_option_num_elements == 1);
4069 gcc_assert (arg != NULL);
4074 if (compare_debug < 0)
4075 compare_debug_opt = NULL;
4077 compare_debug_opt = arg;
4078 save_switch (compare_debug_replacement_opt, 0, NULL, validated, true);
4079 set_source_date_epoch_envvar ();
4082 case OPT_fdiagnostics_color_:
4083 diagnostic_color_init (dc, value);
4086 case OPT_fdiagnostics_urls_:
4087 diagnostic_urls_init (dc, value);
4090 case OPT_fdiagnostics_format_:
4091 diagnostic_output_format_init (dc,
4092 (enum diagnostics_output_format)value);
4098 /* Pass the rest of this option to the assembler. */
4100 /* Split the argument at commas. */
4102 for (j = 0; arg[j]; j++)
4105 add_assembler_option (arg + prev, j - prev);
4109 /* Record the part after the last comma. */
4110 add_assembler_option (arg + prev, j - prev);
4118 /* Pass the rest of this option to the preprocessor. */
4120 /* Split the argument at commas. */
4122 for (j = 0; arg[j]; j++)
4125 add_preprocessor_option (arg + prev, j - prev);
4129 /* Record the part after the last comma. */
4130 add_preprocessor_option (arg + prev, j - prev);
4138 /* Split the argument at commas. */
4140 for (j = 0; arg[j]; j++)
4143 add_infile (save_string (arg + prev, j - prev), "*");
4146 /* Record the part after the last comma. */
4147 add_infile (arg + prev, "*");
4153 add_infile (arg, "*");
4157 case OPT_Xpreprocessor:
4158 add_preprocessor_option (arg, strlen (arg));
4162 case OPT_Xassembler:
4163 add_assembler_option (arg, strlen (arg));
4168 /* POSIX allows separation of -l and the lib arg; canonicalize
4169 by concatenating -l with its arg */
4170 add_infile (concat ("-l", arg, NULL), "*");
4175 /* Similarly, canonicalize -L for linkers that may not accept
4176 separate arguments. */
4177 save_switch (concat ("-L", arg, NULL), 0, NULL, validated, true);
4182 save_switch (concat ("-F", arg, NULL), 0, NULL, validated, true);
4185 case OPT_save_temps:
4186 if (!save_temps_flag)
4187 save_temps_flag = SAVE_TEMPS_DUMP;
4191 case OPT_save_temps_:
4192 if (strcmp (arg, "cwd") == 0)
4193 save_temps_flag = SAVE_TEMPS_CWD;
4194 else if (strcmp (arg, "obj") == 0
4195 || strcmp (arg, "object") == 0)
4196 save_temps_flag = SAVE_TEMPS_OBJ;
4198 fatal_error (input_location, "%qs is an unknown %<-save-temps%> option",
4199 decoded->orig_option_with_args_text);
4200 save_temps_overrides_dumpdir = true;
4205 dumpdir = xstrdup (arg);
4206 save_temps_overrides_dumpdir = false;
4211 dumpbase = xstrdup (arg);
4214 case OPT_dumpbase_ext:
4215 free (dumpbase_ext);
4216 dumpbase_ext = xstrdup (arg);
4219 case OPT_no_canonical_prefixes:
4220 /* Already handled as a special case, so ignored here. */
4226 /* These options set the variables specified in common.opt
4227 automatically, but do need to be saved for spec
4233 struct user_specs *user = XNEW (struct user_specs);
4235 user->next = (struct user_specs *) 0;
4236 user->filename = arg;
4237 if (user_specs_tail)
4238 user_specs_tail->next = user;
4240 user_specs_head = user;
4241 user_specs_tail = user;
4247 target_system_root = arg;
4248 target_system_root_changed = 1;
4253 if (report_times_to_file)
4254 fclose (report_times_to_file);
4255 report_times_to_file = fopen (arg, "a");
4261 This is similar to -v except that there is no execution
4262 of the commands and the echoed arguments are quoted. It
4263 is intended for use in shell scripts to capture the
4264 driver-generated command line. */
4265 verbose_only_flag++;
4272 size_t len = strlen (arg);
4274 /* Catch the case where the user has forgotten to append a
4275 directory separator to the path. Note, they may be using
4276 -B to add an executable name prefix, eg "i386-elf-", in
4277 order to distinguish between multiple installations of
4278 GCC in the same directory. Hence we must check to see
4279 if appending a directory separator actually makes a
4280 valid directory name. */
4281 if (!IS_DIR_SEPARATOR (arg[len - 1])
4282 && is_directory (arg, false))
4284 char *tmp = XNEWVEC (char, len + 2);
4286 tmp[len] = DIR_SEPARATOR;
4291 add_prefix (&exec_prefixes, arg, NULL,
4292 PREFIX_PRIORITY_B_OPT, 0, 0);
4293 add_prefix (&startfile_prefixes, arg, NULL,
4294 PREFIX_PRIORITY_B_OPT, 0, 0);
4295 add_prefix (&include_prefixes, arg, NULL,
4296 PREFIX_PRIORITY_B_OPT, 0, 0);
4307 if (!strcmp (spec_lang, "none"))
4308 /* Suppress the warning if -xnone comes after the last input
4309 file, because alternate command interfaces like g++ might
4310 find it useful to place -xnone after each input file. */
4313 last_language_n_infiles = n_infiles;
4319 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
4320 arg = convert_filename (arg, ! have_c, 0);
4323 /* On some systems, ld cannot handle "-o" without a space. So
4324 split the option from its argument. */
4325 save_switch ("-o", 1, &arg, validated, true);
4328 #ifdef ENABLE_DEFAULT_PIE
4330 /* -pie is turned on by default. */
4333 case OPT_static_libgcc:
4334 case OPT_shared_libgcc:
4335 case OPT_static_libgfortran:
4336 case OPT_static_libstdc__:
4337 /* These are always valid, since gcc.c itself understands the
4338 first two, gfortranspec.c understands -static-libgfortran and
4339 g++spec.c understands -static-libstdc++ */
4348 handle_foffload_option (arg);
4352 /* Various driver options need no special processing at this
4353 point, having been handled in a prescan above or being
4354 handled by specs. */
4359 save_switch (decoded->canonical_option[0],
4360 decoded->canonical_option_num_elements - 1,
4361 &decoded->canonical_option[1], validated, true);
4365 /* Return true if F2 is F1 followed by a single suffix, i.e., by a
4366 period and additional characters other than a period. */
4369 adds_single_suffix_p (const char *f2, const char *f1)
4371 size_t len = strlen (f1);
4373 return (strncmp (f1, f2, len) == 0
4375 && strchr (f2 + len + 1, '.') == NULL);
4378 /* Put the driver's standard set of option handlers in *HANDLERS. */
4381 set_option_handlers (struct cl_option_handlers *handlers)
4383 handlers->unknown_option_callback = driver_unknown_option_callback;
4384 handlers->wrong_lang_callback = driver_wrong_lang_callback;
4385 handlers->num_handlers = 3;
4386 handlers->handlers[0].handler = driver_handle_option;
4387 handlers->handlers[0].mask = CL_DRIVER;
4388 handlers->handlers[1].handler = common_handle_option;
4389 handlers->handlers[1].mask = CL_COMMON;
4390 handlers->handlers[2].handler = target_handle_option;
4391 handlers->handlers[2].mask = CL_TARGET;
4395 /* Return the index into infiles for the single non-library
4396 non-lto-wpa input file, -1 if there isn't any, or -2 if there is
4399 single_input_file_index ()
4403 for (int i = 0; i < n_infiles; i++)
4405 if (infiles[i].language
4406 && (infiles[i].language[0] == '*'
4408 && strcmp (infiles[i].language, "lto") == 0)))
4420 /* Create the vector `switches' and its contents.
4421 Store its length in `n_switches'. */
4424 process_command (unsigned int decoded_options_count,
4425 struct cl_decoded_option *decoded_options)
4429 char *tooldir_prefix, *tooldir_prefix2;
4430 char *(*get_relative_prefix) (const char *, const char *,
4431 const char *) = NULL;
4432 struct cl_option_handlers handlers;
4435 gcc_exec_prefix = env.get ("GCC_EXEC_PREFIX");
4439 added_libraries = 0;
4441 /* Figure compiler version from version string. */
4443 compiler_version = temp1 = xstrdup (version_string);
4445 for (; *temp1; ++temp1)
4454 /* Handle any -no-canonical-prefixes flag early, to assign the function
4455 that builds relative prefixes. This function creates default search
4456 paths that are needed later in normal option handling. */
4458 for (j = 1; j < decoded_options_count; j++)
4460 if (decoded_options[j].opt_index == OPT_no_canonical_prefixes)
4462 get_relative_prefix = make_relative_prefix_ignore_links;
4466 if (! get_relative_prefix)
4467 get_relative_prefix = make_relative_prefix;
4469 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
4470 see if we can create it from the pathname specified in
4471 decoded_options[0].arg. */
4473 gcc_libexec_prefix = standard_libexec_prefix;
4475 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
4476 if (!gcc_exec_prefix)
4478 gcc_exec_prefix = get_relative_prefix (decoded_options[0].arg,
4479 standard_bindir_prefix,
4480 standard_exec_prefix);
4481 gcc_libexec_prefix = get_relative_prefix (decoded_options[0].arg,
4482 standard_bindir_prefix,
4483 standard_libexec_prefix);
4484 if (gcc_exec_prefix)
4485 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
4489 /* make_relative_prefix requires a program name, but
4490 GCC_EXEC_PREFIX is typically a directory name with a trailing
4491 / (which is ignored by make_relative_prefix), so append a
4493 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL);
4494 gcc_libexec_prefix = get_relative_prefix (tmp_prefix,
4495 standard_exec_prefix,
4496 standard_libexec_prefix);
4498 /* The path is unrelocated, so fallback to the original setting. */
4499 if (!gcc_libexec_prefix)
4500 gcc_libexec_prefix = standard_libexec_prefix;
4506 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
4507 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
4508 or an automatically created GCC_EXEC_PREFIX from
4509 decoded_options[0].arg. */
4511 /* Do language-specific adjustment/addition of flags. */
4512 lang_specific_driver (&decoded_options, &decoded_options_count,
4515 if (gcc_exec_prefix)
4517 int len = strlen (gcc_exec_prefix);
4519 if (len > (int) sizeof ("/lib/gcc/") - 1
4520 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
4522 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
4523 if (IS_DIR_SEPARATOR (*temp)
4524 && filename_ncmp (temp + 1, "lib", 3) == 0
4525 && IS_DIR_SEPARATOR (temp[4])
4526 && filename_ncmp (temp + 5, "gcc", 3) == 0)
4527 len -= sizeof ("/lib/gcc/") - 1;
4530 set_std_prefix (gcc_exec_prefix, len);
4531 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
4532 PREFIX_PRIORITY_LAST, 0, 0);
4533 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
4534 PREFIX_PRIORITY_LAST, 0, 0);
4537 /* COMPILER_PATH and LIBRARY_PATH have values
4538 that are lists of directory names with colons. */
4540 temp = env.get ("COMPILER_PATH");
4543 const char *startp, *endp;
4544 char *nstore = (char *) alloca (strlen (temp) + 3);
4546 startp = endp = temp;
4549 if (*endp == PATH_SEPARATOR || *endp == 0)
4551 strncpy (nstore, startp, endp - startp);
4553 strcpy (nstore, concat (".", dir_separator_str, NULL));
4554 else if (!IS_DIR_SEPARATOR (endp[-1]))
4556 nstore[endp - startp] = DIR_SEPARATOR;
4557 nstore[endp - startp + 1] = 0;
4560 nstore[endp - startp] = 0;
4561 add_prefix (&exec_prefixes, nstore, 0,
4562 PREFIX_PRIORITY_LAST, 0, 0);
4563 add_prefix (&include_prefixes, nstore, 0,
4564 PREFIX_PRIORITY_LAST, 0, 0);
4567 endp = startp = endp + 1;
4574 temp = env.get (LIBRARY_PATH_ENV);
4575 if (temp && *cross_compile == '0')
4577 const char *startp, *endp;
4578 char *nstore = (char *) alloca (strlen (temp) + 3);
4580 startp = endp = temp;
4583 if (*endp == PATH_SEPARATOR || *endp == 0)
4585 strncpy (nstore, startp, endp - startp);
4587 strcpy (nstore, concat (".", dir_separator_str, NULL));
4588 else if (!IS_DIR_SEPARATOR (endp[-1]))
4590 nstore[endp - startp] = DIR_SEPARATOR;
4591 nstore[endp - startp + 1] = 0;
4594 nstore[endp - startp] = 0;
4595 add_prefix (&startfile_prefixes, nstore, NULL,
4596 PREFIX_PRIORITY_LAST, 0, 1);
4599 endp = startp = endp + 1;
4606 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
4607 temp = env.get ("LPATH");
4608 if (temp && *cross_compile == '0')
4610 const char *startp, *endp;
4611 char *nstore = (char *) alloca (strlen (temp) + 3);
4613 startp = endp = temp;
4616 if (*endp == PATH_SEPARATOR || *endp == 0)
4618 strncpy (nstore, startp, endp - startp);
4620 strcpy (nstore, concat (".", dir_separator_str, NULL));
4621 else if (!IS_DIR_SEPARATOR (endp[-1]))
4623 nstore[endp - startp] = DIR_SEPARATOR;
4624 nstore[endp - startp + 1] = 0;
4627 nstore[endp - startp] = 0;
4628 add_prefix (&startfile_prefixes, nstore, NULL,
4629 PREFIX_PRIORITY_LAST, 0, 1);
4632 endp = startp = endp + 1;
4639 /* Process the options and store input files and switches in their
4642 last_language_n_infiles = -1;
4644 set_option_handlers (&handlers);
4646 for (j = 1; j < decoded_options_count; j++)
4648 switch (decoded_options[j].opt_index)
4660 for (j = 1; j < decoded_options_count; j++)
4662 if (decoded_options[j].opt_index == OPT_SPECIAL_input_file)
4664 const char *arg = decoded_options[j].arg;
4665 const char *p = strrchr (arg, '@');
4669 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4670 arg = convert_filename (arg, 0, access (arg, F_OK));
4672 /* For LTO static archive support we handle input file
4673 specifications that are composed of a filename and
4674 an offset like FNAME@OFFSET. */
4677 && sscanf (p, "@%li%n", &offset, &consumed) >= 1
4678 && strlen (p) == (unsigned int)consumed)
4680 fname = (char *)xmalloc (p - arg + 1);
4681 memcpy (fname, arg, p - arg);
4682 fname[p - arg] = '\0';
4683 /* Only accept non-stdin and existing FNAME parts, otherwise
4684 try with the full name. */
4685 if (strcmp (fname, "-") == 0 || access (fname, F_OK) < 0)
4688 fname = xstrdup (arg);
4692 fname = xstrdup (arg);
4694 if (strcmp (fname, "-") != 0 && access (fname, F_OK) < 0)
4696 bool resp = fname[0] == '@' && access (fname + 1, F_OK) < 0;
4697 error ("%s: %m", fname + resp);
4700 add_infile (arg, spec_lang);
4706 read_cmdline_option (&global_options, &global_options_set,
4707 decoded_options + j, UNKNOWN_LOCATION,
4708 CL_DRIVER, &handlers, global_dc);
4711 /* If the user didn't specify any, default to all configured offload
4713 if (ENABLE_OFFLOADING && offload_targets == NULL)
4714 handle_foffload_option (OFFLOAD_TARGETS);
4717 && strcmp (output_file, "-") != 0
4718 && strcmp (output_file, HOST_BIT_BUCKET) != 0)
4721 for (i = 0; i < n_infiles; i++)
4722 if ((!infiles[i].language || infiles[i].language[0] != '*')
4723 && canonical_filename_eq (infiles[i].name, output_file))
4724 fatal_error (input_location,
4725 "input file %qs is the same as output file",
4729 if (output_file != NULL && output_file[0] == '\0')
4730 fatal_error (input_location, "output filename may not be empty");
4732 /* -dumpdir and -save-temps=* both specify the location of aux/dump
4733 outputs; the one that appears last prevails. When compiling
4734 multiple sources, an explicit dumpbase (minus -ext) may be
4735 combined with an explicit or implicit dumpdir, whereas when
4736 linking, a specified or implied link output name (minus
4737 extension) may be combined with a prevailing -save-temps=* or an
4738 otherwise implied dumpdir, but not override a prevailing
4739 -dumpdir. Primary outputs (e.g., linker output when linking
4740 without -o, or .i, .s or .o outputs when processing multiple
4741 inputs with -E, -S or -c, respectively) are NOT affected by these
4742 -save-temps=/-dump* options, always landing in the current
4743 directory and with the same basename as the input when an output
4744 name is not given, but when they're intermediate outputs, they
4745 are named like other aux outputs, so the options affect their
4748 Here are some examples. There are several more in the
4749 documentation of -o and -dump*, and some quite exhaustive tests
4750 in gcc.misc-tests/outputs.exp.
4752 When compiling any number of sources, no -dump* nor
4753 -save-temps=*, all outputs in cwd without prefix:
4755 # gcc -c b.c -gsplit-dwarf
4756 -> cc1 [-dumpdir ./] -dumpbase b.c -dumpbase-ext .c # b.o b.dwo
4758 # gcc -c b.c d.c -gsplit-dwarf
4759 -> cc1 [-dumpdir ./] -dumpbase b.c -dumpbase-ext .c # b.o b.dwo
4760 && cc1 [-dumpdir ./] -dumpbase d.c -dumpbase-ext .c # d.o d.dwo
4762 When compiling and linking, no -dump* nor -save-temps=*, .o
4763 outputs are temporary, aux outputs land in the dir of the output,
4764 prefixed with the basename of the linker output:
4766 # gcc b.c d.c -o ab -gsplit-dwarf
4767 -> cc1 -dumpdir ab- -dumpbase b.c -dumpbase-ext .c # ab-b.dwo
4768 && cc1 -dumpdir ab- -dumpbase d.c -dumpbase-ext .c # ab-d.dwo
4771 # gcc b.c d.c [-o a.out] -gsplit-dwarf
4772 -> cc1 -dumpdir a- -dumpbase b.c -dumpbase-ext .c # a-b.dwo
4773 && cc1 -dumpdir a- -dumpbase d.c -dumpbase-ext .c # a-d.dwo
4774 && link ... [-o a.out]
4776 When compiling and linking, a prevailing -dumpdir fully overrides
4777 the prefix of aux outputs given by the output name:
4779 # gcc -dumpdir f b.c d.c -gsplit-dwarf [-o [dir/]whatever]
4780 -> cc1 -dumpdir f -dumpbase b.c -dumpbase-ext .c # fb.dwo
4781 && cc1 -dumpdir f -dumpbase d.c -dumpbase-ext .c # fd.dwo
4782 && link ... [-o whatever]
4784 When compiling multiple inputs, an explicit -dumpbase is combined
4785 with -dumpdir, affecting aux outputs, but not the .o outputs:
4787 # gcc -dumpdir f -dumpbase g- b.c d.c -gsplit-dwarf -c
4788 -> cc1 -dumpdir fg- -dumpbase b.c -dumpbase-ext .c # b.o fg-b.dwo
4789 && cc1 -dumpdir fg- -dumpbase d.c -dumpbase-ext .c # d.o fg-d.dwo
4791 When compiling and linking with -save-temps, the .o outputs that
4792 would have been temporary become aux outputs, so they get
4793 affected by -dump* flags:
4795 # gcc -dumpdir f -dumpbase g- -save-temps b.c d.c
4796 -> cc1 -dumpdir fg- -dumpbase b.c -dumpbase-ext .c # fg-b.o
4797 && cc1 -dumpdir fg- -dumpbase d.c -dumpbase-ext .c # fg-d.o
4800 If -save-temps=* prevails over -dumpdir, however, the explicit
4801 -dumpdir is discarded, as if it wasn't there. The basename of
4802 the implicit linker output, a.out or a.exe, becomes a- as the aux
4803 output prefix for all compilations:
4805 # gcc [-dumpdir f] -save-temps=cwd b.c d.c
4806 -> cc1 -dumpdir a- -dumpbase b.c -dumpbase-ext .c # a-b.o
4807 && cc1 -dumpdir a- -dumpbase d.c -dumpbase-ext .c # a-d.o
4810 A single -dumpbase, applying to multiple inputs, overrides the
4811 linker output name, implied or explicit, as the aux output prefix:
4813 # gcc [-dumpdir f] -dumpbase g- -save-temps=cwd b.c d.c
4814 -> cc1 -dumpdir g- -dumpbase b.c -dumpbase-ext .c # g-b.o
4815 && cc1 -dumpdir g- -dumpbase d.c -dumpbase-ext .c # g-d.o
4818 # gcc [-dumpdir f] -dumpbase g- -save-temps=cwd b.c d.c -o dir/h.out
4819 -> cc1 -dumpdir g- -dumpbase b.c -dumpbase-ext .c # g-b.o
4820 && cc1 -dumpdir g- -dumpbase d.c -dumpbase-ext .c # g-d.o
4821 && link -o dir/h.out
4823 Now, if the linker output is NOT overridden as a prefix, but
4824 -save-temps=* overrides implicit or explicit -dumpdir, the
4825 effective dump dir combines the dir selected by the -save-temps=*
4826 option with the basename of the specified or implied link output:
4828 # gcc [-dumpdir f] -save-temps=cwd b.c d.c -o dir/h.out
4829 -> cc1 -dumpdir h- -dumpbase b.c -dumpbase-ext .c # h-b.o
4830 && cc1 -dumpdir h- -dumpbase d.c -dumpbase-ext .c # h-d.o
4831 && link -o dir/h.out
4833 # gcc [-dumpdir f] -save-temps=obj b.c d.c -o dir/h.out
4834 -> cc1 -dumpdir dir/h- -dumpbase b.c -dumpbase-ext .c # dir/h-b.o
4835 && cc1 -dumpdir dir/h- -dumpbase d.c -dumpbase-ext .c # dir/h-d.o
4836 && link -o dir/h.out
4838 But then again, a single -dumpbase applying to multiple inputs
4839 gets used instead of the linker output basename in the combined
4842 # gcc [-dumpdir f] -dumpbase g- -save-temps=obj b.c d.c -o dir/h.out
4843 -> cc1 -dumpdir dir/g- -dumpbase b.c -dumpbase-ext .c # dir/g-b.o
4844 && cc1 -dumpdir dir/g- -dumpbase d.c -dumpbase-ext .c # dir/g-d.o
4845 && link -o dir/h.out
4847 With a single input being compiled, the output basename does NOT
4848 affect the dumpdir prefix.
4850 # gcc -save-temps=obj b.c -gsplit-dwarf -c -o dir/b.o
4851 -> cc1 -dumpdir dir/ -dumpbase b.c -dumpbase-ext .c # dir/b.o dir/b.dwo
4853 but when compiling and linking even a single file, it does:
4855 # gcc -save-temps=obj b.c -o dir/h.out
4856 -> cc1 -dumpdir dir/h- -dumpbase b.c -dumpbase-ext .c # dir/h-b.o
4858 unless an explicit -dumpdir prevails:
4860 # gcc -save-temps[=obj] -dumpdir g- b.c -o dir/h.out
4861 -> cc1 -dumpdir g- -dumpbase b.c -dumpbase-ext .c # g-b.o
4865 bool explicit_dumpdir = dumpdir;
4867 if (!save_temps_overrides_dumpdir && explicit_dumpdir)
4872 /* If -save-temps=obj and -o name, create the prefix to use for %b.
4873 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
4874 else if (save_temps_flag != SAVE_TEMPS_CWD && output_file != NULL)
4878 temp = lbasename (output_file);
4879 if (temp != output_file)
4880 dumpdir = xstrndup (output_file,
4881 strlen (output_file) - strlen (temp));
4889 if (save_temps_flag)
4890 save_temps_flag = SAVE_TEMPS_DUMP;
4892 /* If there is any pathname component in an explicit -dumpbase, it
4893 overrides dumpdir entirely, so discard it right away. Although
4894 the presence of an explicit -dumpdir matters for the driver, it
4895 shouldn't matter for other processes, that get all that's needed
4896 from the -dumpdir and -dumpbase always passed to them. */
4897 if (dumpdir && dumpbase && lbasename (dumpbase) != dumpbase)
4903 /* Check that dumpbase_ext matches the end of dumpbase, drop it
4905 if (dumpbase_ext && dumpbase && *dumpbase)
4907 int lendb = strlen (dumpbase);
4908 int lendbx = strlen (dumpbase_ext);
4911 || strcmp (dumpbase + lendb - lendbx, dumpbase_ext) != 0)
4913 free (dumpbase_ext);
4914 dumpbase_ext = NULL;
4918 /* -dumpbase with multiple sources goes into dumpdir. With a single
4919 source, it does only if linking and if dumpdir was not explicitly
4921 if (dumpbase && *dumpbase
4922 && (single_input_file_index () == -2
4923 || (!have_c && !explicit_dumpdir)))
4928 /* We checked that they match above. */
4929 dumpbase[strlen (dumpbase) - strlen (dumpbase_ext)] = '\0';
4932 prefix = concat (dumpdir, dumpbase, "-", NULL);
4934 prefix = concat (dumpbase, "-", NULL);
4938 free (dumpbase_ext);
4939 dumpbase = dumpbase_ext = NULL;
4941 dumpdir_trailing_dash_added = true;
4944 /* If dumpbase was not brought into dumpdir but we're linking, bring
4945 output_file into dumpdir unless dumpdir was explicitly specified.
4946 The test for !explicit_dumpdir is further below, because we want
4947 to use the obase computation for a ghost outbase, passed to
4948 GCC_COLLECT_OPTIONS. */
4949 else if (!have_c && (!explicit_dumpdir || (dumpbase && !*dumpbase)))
4951 /* If we get here, we know dumpbase was not specified, or it was
4952 specified as an empty string. If it was anything else, it
4953 would have combined with dumpdir above, because the condition
4954 for dumpbase to be used when present is broader than the
4955 condition that gets us here. */
4956 gcc_assert (!dumpbase || !*dumpbase);
4959 char *tofree = NULL;
4960 if (!output_file || not_actual_file_p (output_file))
4964 obase = lbasename (output_file);
4965 size_t blen = strlen (obase), xlen;
4966 /* Drop the suffix if it's dumpbase_ext, if given,
4967 otherwise .exe or the target executable suffix, or if the
4968 output was explicitly named a.out, but not otherwise. */
4970 ? (blen > (xlen = strlen (dumpbase_ext))
4971 && strcmp ((temp = (obase + blen - xlen)),
4973 : ((temp = strrchr (obase + 1, '.'))
4974 && (xlen = strlen (temp))
4975 && (strcmp (temp, ".exe") == 0
4976 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
4977 || strcmp (temp, TARGET_EXECUTABLE_SUFFIX) == 0
4979 || strcmp (obase, "a.out") == 0)))
4981 tofree = xstrndup (obase, blen - xlen);
4986 /* We wish to save this basename to the -dumpdir passed through
4987 GCC_COLLECT_OPTIONS within maybe_run_linker, for e.g. LTO,
4988 but we do NOT wish to add it to e.g. %b, so we keep
4989 outbase_length as zero. */
4990 gcc_assert (!outbase);
4993 /* If we're building [dir1/]foo[.exe] out of a single input
4994 [dir2/]foo.c that shares the same basename, dump to
4995 [dir2/]foo.c.* rather than duplicating the basename into
4996 [dir2/]foo-foo.c.*. */
4999 || ((idxin = single_input_file_index ()) >= 0
5000 && adds_single_suffix_p (lbasename (infiles[idxin].name),
5003 if (obase == tofree)
5007 outbase = xstrdup (obase);
5010 obase = tofree = NULL;
5016 char *p = concat (dumpdir, obase, "-", NULL);
5021 dumpdir = concat (obase, "-", NULL);
5023 dumpdir_trailing_dash_added = true;
5026 obase = tofree = NULL;
5029 if (!explicit_dumpdir || dumpbase)
5031 /* Absent -dumpbase and present -dumpbase-ext have been applied
5032 to the linker output name, so compute fresh defaults for each
5034 free (dumpbase_ext);
5035 dumpbase_ext = NULL;
5039 /* Now, if we're compiling, or if we haven't used the dumpbase
5040 above, then outbase (%B) is derived from dumpbase, if given, or
5041 from the output name, given or implied. We can't precompute
5042 implied output names, but that's ok, since they're derived from
5043 input names. Just make sure we skip this if dumpbase is the
5044 empty string: we want to use input names then, so don't set
5046 if ((dumpbase || have_c)
5047 && !(dumpbase && !*dumpbase))
5049 gcc_assert (!outbase);
5053 gcc_assert (single_input_file_index () != -2);
5054 /* We do not want lbasename here; dumpbase with dirnames
5055 overrides dumpdir entirely, even if dumpdir is
5058 /* We've already checked above that the suffix matches. */
5059 outbase = xstrndup (dumpbase,
5060 strlen (dumpbase) - strlen (dumpbase_ext));
5062 outbase = xstrdup (dumpbase);
5064 else if (output_file && !not_actual_file_p (output_file))
5066 outbase = xstrdup (lbasename (output_file));
5067 char *p = strrchr (outbase + 1, '.');
5073 outbase_length = strlen (outbase);
5076 /* If there is any pathname component in an explicit -dumpbase, do
5077 not use dumpdir, but retain it to pass it on to the compiler. */
5079 dumpdir_length = strlen (dumpdir);
5083 /* Check that dumpbase_ext, if still present, still matches the end
5084 of dumpbase, if present, and drop it otherwise. We only retained
5085 it above when dumpbase was absent to maybe use it to drop the
5086 extension from output_name before combining it with dumpdir. */
5091 free (dumpbase_ext);
5092 dumpbase_ext = NULL;
5095 gcc_assert (strcmp (dumpbase + strlen (dumpbase)
5096 - strlen (dumpbase_ext), dumpbase_ext) == 0);
5099 if (save_temps_flag && use_pipes)
5101 /* -save-temps overrides -pipe, so that temp files are produced */
5102 if (save_temps_flag)
5103 warning (0, "%<-pipe%> ignored because %<-save-temps%> specified");
5109 const char *gcd = env.get ("GCC_COMPARE_DEBUG");
5111 if (gcd && gcd[0] == '-')
5114 compare_debug_opt = gcd;
5116 else if (gcd && *gcd && strcmp (gcd, "0"))
5119 compare_debug_opt = "-gtoggle";
5122 else if (compare_debug < 0)
5125 gcc_assert (!compare_debug_opt);
5128 /* Set up the search paths. We add directories that we expect to
5129 contain GNU Toolchain components before directories specified by
5130 the machine description so that we will find GNU components (like
5131 the GNU assembler) before those of the host system. */
5133 /* If we don't know where the toolchain has been installed, use the
5134 configured-in locations. */
5135 if (!gcc_exec_prefix)
5138 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
5139 PREFIX_PRIORITY_LAST, 1, 0);
5140 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
5141 PREFIX_PRIORITY_LAST, 2, 0);
5142 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
5143 PREFIX_PRIORITY_LAST, 2, 0);
5145 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
5146 PREFIX_PRIORITY_LAST, 1, 0);
5149 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix));
5150 tooldir_prefix2 = concat (tooldir_base_prefix, spec_machine,
5151 dir_separator_str, NULL);
5153 /* Look for tools relative to the location from which the driver is
5154 running, or, if that is not available, the configured prefix. */
5156 = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
5157 spec_host_machine, dir_separator_str, spec_version,
5158 accel_dir_suffix, dir_separator_str, tooldir_prefix2, NULL);
5159 free (tooldir_prefix2);
5161 add_prefix (&exec_prefixes,
5162 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
5163 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0);
5164 add_prefix (&startfile_prefixes,
5165 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
5166 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1);
5167 free (tooldir_prefix);
5169 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
5170 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
5171 then consider it to relocate with the rest of the GCC installation
5172 if GCC_EXEC_PREFIX is set.
5173 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
5174 if (target_system_root && !target_system_root_changed && gcc_exec_prefix)
5176 char *tmp_prefix = get_relative_prefix (decoded_options[0].arg,
5177 standard_bindir_prefix,
5178 target_system_root);
5179 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
5181 target_system_root = tmp_prefix;
5182 target_system_root_changed = 1;
5187 /* More prefixes are enabled in main, after we read the specs file
5188 and determine whether this is cross-compilation or not. */
5190 if (n_infiles != 0 && n_infiles == last_language_n_infiles && spec_lang != 0)
5191 warning (0, "%<-x %s%> after last input file has no effect", spec_lang);
5193 /* Synthesize -fcompare-debug flag from the GCC_COMPARE_DEBUG
5194 environment variable. */
5195 if (compare_debug == 2 || compare_debug == 3)
5197 const char *opt = concat ("-fcompare-debug=", compare_debug_opt, NULL);
5198 save_switch (opt, 0, NULL, false, true);
5202 /* Ensure we only invoke each subprocess once. */
5204 && (print_subprocess_help || print_help_list || print_version))
5206 /* Create a dummy input file, so that we can pass
5207 the help option on to the various sub-processes. */
5208 add_infile ("help-dummy", "c");
5211 /* Decide if undefined variable references are allowed in specs. */
5213 /* -v alone is safe. --version and --help alone or together are safe. Note
5214 that -v would make them unsafe, as they'd then be run for subprocesses as
5215 well, the location of which might depend on variables possibly coming
5216 from self-specs. Note also that the command name is counted in
5217 decoded_options_count. */
5219 unsigned help_version_count = 0;
5222 help_version_count++;
5224 if (print_help_list)
5225 help_version_count++;
5227 spec_undefvar_allowed =
5228 ((verbose_flag && decoded_options_count == 2)
5229 || help_version_count == decoded_options_count - 1);
5232 switches[n_switches].part1 = 0;
5234 infiles[n_infiles].name = 0;
5237 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
5238 and place that in the environment. */
5241 set_collect_gcc_options (void)
5246 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
5248 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
5249 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
5252 for (i = 0; (int) i < n_switches; i++)
5254 const char *const *args;
5257 obstack_grow (&collect_obstack, " ", 1);
5261 /* Ignore elided switches. */
5262 if ((switches[i].live_cond
5263 & (SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC))
5267 obstack_grow (&collect_obstack, "'-", 2);
5268 q = switches[i].part1;
5269 while ((p = strchr (q, '\'')))
5271 obstack_grow (&collect_obstack, q, p - q);
5272 obstack_grow (&collect_obstack, "'\\''", 4);
5275 obstack_grow (&collect_obstack, q, strlen (q));
5276 obstack_grow (&collect_obstack, "'", 1);
5278 for (args = switches[i].args; args && *args; args++)
5280 obstack_grow (&collect_obstack, " '", 2);
5282 while ((p = strchr (q, '\'')))
5284 obstack_grow (&collect_obstack, q, p - q);
5285 obstack_grow (&collect_obstack, "'\\''", 4);
5288 obstack_grow (&collect_obstack, q, strlen (q));
5289 obstack_grow (&collect_obstack, "'", 1);
5296 obstack_grow (&collect_obstack, " ", 1);
5299 obstack_grow (&collect_obstack, "'-dumpdir' '", 12);
5303 while ((p = strchr (q, '\'')))
5305 obstack_grow (&collect_obstack, q, p - q);
5306 obstack_grow (&collect_obstack, "'\\''", 4);
5309 obstack_grow (&collect_obstack, q, strlen (q));
5311 obstack_grow (&collect_obstack, "'", 1);
5314 obstack_grow (&collect_obstack, "\0", 1);
5315 xputenv (XOBFINISH (&collect_obstack, char *));
5318 /* Process a spec string, accumulating and running commands. */
5320 /* These variables describe the input file name.
5321 input_file_number is the index on outfiles of this file,
5322 so that the output file name can be stored for later use by %o.
5323 input_basename is the start of the part of the input file
5324 sans all directory names, and basename_length is the number
5325 of characters starting there excluding the suffix .c or whatever. */
5327 static const char *gcc_input_filename;
5328 static int input_file_number;
5329 size_t input_filename_length;
5330 static int basename_length;
5331 static int suffixed_basename_length;
5332 static const char *input_basename;
5333 static const char *input_suffix;
5334 #ifndef HOST_LACKS_INODE_NUMBERS
5335 static struct stat input_stat;
5337 static int input_stat_set;
5339 /* The compiler used to process the current input file. */
5340 static struct compiler *input_file_compiler;
5342 /* These are variables used within do_spec and do_spec_1. */
5344 /* Nonzero if an arg has been started and not yet terminated
5345 (with space, tab or newline). */
5346 static int arg_going;
5348 /* Nonzero means %d or %g has been seen; the next arg to be terminated
5349 is a temporary file name. */
5350 static int delete_this_arg;
5352 /* Nonzero means %w has been seen; the next arg to be terminated
5353 is the output file name of this compilation. */
5354 static int this_is_output_file;
5356 /* Nonzero means %s has been seen; the next arg to be terminated
5357 is the name of a library file and we should try the standard
5358 search dirs for it. */
5359 static int this_is_library_file;
5361 /* Nonzero means %T has been seen; the next arg to be terminated
5362 is the name of a linker script and we should try all of the
5363 standard search dirs for it. If it is found insert a --script
5364 command line switch and then substitute the full path in place,
5365 otherwise generate an error message. */
5366 static int this_is_linker_script;
5368 /* Nonzero means that the input of this command is coming from a pipe. */
5369 static int input_from_pipe;
5371 /* Nonnull means substitute this for any suffix when outputting a switches
5373 static const char *suffix_subst;
5375 /* If there is an argument being accumulated, terminate it and store it. */
5378 end_going_arg (void)
5384 obstack_1grow (&obstack, 0);
5385 string = XOBFINISH (&obstack, const char *);
5386 if (this_is_library_file)
5387 string = find_file (string);
5388 if (this_is_linker_script)
5390 char * full_script_path = find_a_file (&startfile_prefixes, string, R_OK, true);
5392 if (full_script_path == NULL)
5394 error ("unable to locate default linker script %qs in the library search paths", string);
5395 /* Script was not found on search path. */
5398 store_arg ("--script", false, false);
5399 string = full_script_path;
5401 store_arg (string, delete_this_arg, this_is_output_file);
5402 if (this_is_output_file)
5403 outfiles[input_file_number] = string;
5409 /* Parse the WRAPPER string which is a comma separated list of the command line
5410 and insert them into the beginning of argbuf. */
5413 insert_wrapper (const char *wrapper)
5417 char *buf = xstrdup (wrapper);
5419 unsigned int old_length = argbuf.length ();
5427 while ((p = strchr (p, ',')) != NULL);
5429 argbuf.safe_grow (old_length + n);
5430 memmove (argbuf.address () + n,
5432 old_length * sizeof (const_char_p));
5446 while ((p = strchr (p, ',')) != NULL);
5447 gcc_assert (i == n);
5450 /* Process the spec SPEC and run the commands specified therein.
5451 Returns 0 if the spec is successfully processed; -1 if failed. */
5454 do_spec (const char *spec)
5458 value = do_spec_2 (spec, NULL);
5460 /* Force out any unfinished command.
5461 If -pipe, this forces out the last command if it ended in `|'. */
5464 if (argbuf.length () > 0
5465 && !strcmp (argbuf.last (), "|"))
5468 set_collect_gcc_options ();
5470 if (argbuf.length () > 0)
5477 /* Process the spec SPEC, with SOFT_MATCHED_PART designating the current value
5478 of a matched * pattern which may be re-injected by way of %*. */
5481 do_spec_2 (const char *spec, const char *soft_matched_part)
5487 delete_this_arg = 0;
5488 this_is_output_file = 0;
5489 this_is_library_file = 0;
5490 this_is_linker_script = 0;
5491 input_from_pipe = 0;
5492 suffix_subst = NULL;
5494 result = do_spec_1 (spec, 0, soft_matched_part);
5501 /* Process the given spec string and add any new options to the end
5502 of the switches/n_switches array. */
5505 do_option_spec (const char *name, const char *spec)
5507 unsigned int i, value_count, value_len;
5508 const char *p, *q, *value;
5509 char *tmp_spec, *tmp_spec_p;
5511 if (configure_default_options[0].name == NULL)
5514 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
5515 if (strcmp (configure_default_options[i].name, name) == 0)
5517 if (i == ARRAY_SIZE (configure_default_options))
5520 value = configure_default_options[i].value;
5521 value_len = strlen (value);
5523 /* Compute the size of the final spec. */
5526 while ((p = strstr (p, "%(VALUE)")) != NULL)
5532 /* Replace each %(VALUE) by the specified value. */
5533 tmp_spec = (char *) alloca (strlen (spec) + 1
5534 + value_count * (value_len - strlen ("%(VALUE)")));
5535 tmp_spec_p = tmp_spec;
5537 while ((p = strstr (q, "%(VALUE)")) != NULL)
5539 memcpy (tmp_spec_p, q, p - q);
5540 tmp_spec_p = tmp_spec_p + (p - q);
5541 memcpy (tmp_spec_p, value, value_len);
5542 tmp_spec_p += value_len;
5543 q = p + strlen ("%(VALUE)");
5545 strcpy (tmp_spec_p, q);
5547 do_self_spec (tmp_spec);
5550 /* Process the given spec string and add any new options to the end
5551 of the switches/n_switches array. */
5554 do_self_spec (const char *spec)
5558 do_spec_2 (spec, NULL);
5559 do_spec_1 (" ", 0, NULL);
5561 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
5562 do_self_specs adds the replacements to switches array, so it shouldn't
5563 be processed afterwards. */
5564 for (i = 0; i < n_switches; i++)
5565 if ((switches[i].live_cond & SWITCH_IGNORE))
5566 switches[i].live_cond |= SWITCH_IGNORE_PERMANENTLY;
5568 if (argbuf.length () > 0)
5570 const char **argbuf_copy;
5571 struct cl_decoded_option *decoded_options;
5572 struct cl_option_handlers handlers;
5573 unsigned int decoded_options_count;
5576 /* Create a copy of argbuf with a dummy argv[0] entry for
5577 decode_cmdline_options_to_array. */
5578 argbuf_copy = XNEWVEC (const char *,
5579 argbuf.length () + 1);
5580 argbuf_copy[0] = "";
5581 memcpy (argbuf_copy + 1, argbuf.address (),
5582 argbuf.length () * sizeof (const char *));
5584 decode_cmdline_options_to_array (argbuf.length () + 1,
5586 CL_DRIVER, &decoded_options,
5587 &decoded_options_count);
5590 set_option_handlers (&handlers);
5592 for (j = 1; j < decoded_options_count; j++)
5594 switch (decoded_options[j].opt_index)
5596 case OPT_SPECIAL_input_file:
5597 /* Specs should only generate options, not input
5599 if (strcmp (decoded_options[j].arg, "-") != 0)
5600 fatal_error (input_location,
5601 "switch %qs does not start with %<-%>",
5602 decoded_options[j].arg);
5604 fatal_error (input_location,
5605 "spec-generated switch is just %<-%>");
5608 case OPT_fcompare_debug_second:
5609 case OPT_fcompare_debug:
5610 case OPT_fcompare_debug_:
5612 /* Avoid duplicate processing of some options from
5613 compare-debug specs; just save them here. */
5614 save_switch (decoded_options[j].canonical_option[0],
5615 (decoded_options[j].canonical_option_num_elements
5617 &decoded_options[j].canonical_option[1], false, true);
5621 read_cmdline_option (&global_options, &global_options_set,
5622 decoded_options + j, UNKNOWN_LOCATION,
5623 CL_DRIVER, &handlers, global_dc);
5628 free (decoded_options);
5631 switches[n_switches].part1 = 0;
5635 /* Callback for processing %D and %I specs. */
5637 struct spec_path_info {
5642 bool separate_options;
5646 spec_path (char *path, void *data)
5648 struct spec_path_info *info = (struct spec_path_info *) data;
5652 if (info->omit_relative && !IS_ABSOLUTE_PATH (path))
5655 if (info->append_len != 0)
5657 len = strlen (path);
5658 memcpy (path + len, info->append, info->append_len + 1);
5661 if (!is_directory (path, true))
5664 do_spec_1 (info->option, 1, NULL);
5665 if (info->separate_options)
5666 do_spec_1 (" ", 0, NULL);
5668 if (info->append_len == 0)
5670 len = strlen (path);
5671 save = path[len - 1];
5672 if (IS_DIR_SEPARATOR (path[len - 1]))
5673 path[len - 1] = '\0';
5676 do_spec_1 (path, 1, NULL);
5677 do_spec_1 (" ", 0, NULL);
5679 /* Must not damage the original path. */
5680 if (info->append_len == 0)
5681 path[len - 1] = save;
5686 /* True if we should compile INFILE. */
5689 compile_input_file_p (struct infile *infile)
5691 if ((!infile->language) || (infile->language[0] != '*'))
5692 if (infile->incompiler == input_file_compiler)
5697 /* Process each member of VEC as a spec. */
5700 do_specs_vec (vec<char_p> vec)
5705 FOR_EACH_VEC_ELT (vec, ix, opt)
5707 do_spec_1 (opt, 1, NULL);
5708 /* Make each accumulated option a separate argument. */
5709 do_spec_1 (" ", 0, NULL);
5713 /* Add options passed via -Xassembler or -Wa to COLLECT_AS_OPTIONS. */
5716 putenv_COLLECT_AS_OPTIONS (vec<char_p> vec)
5718 if (vec.is_empty ())
5721 obstack_init (&collect_obstack);
5722 obstack_grow (&collect_obstack, "COLLECT_AS_OPTIONS=",
5723 strlen ("COLLECT_AS_OPTIONS="));
5728 FOR_EACH_VEC_ELT (vec, ix, opt)
5730 obstack_1grow (&collect_obstack, '\'');
5731 obstack_grow (&collect_obstack, opt, strlen (opt));
5732 obstack_1grow (&collect_obstack, '\'');
5733 if (ix < vec.length () - 1)
5734 obstack_1grow(&collect_obstack, ' ');
5737 obstack_1grow (&collect_obstack, '\0');
5738 xputenv (XOBFINISH (&collect_obstack, char *));
5741 /* Process the sub-spec SPEC as a portion of a larger spec.
5742 This is like processing a whole spec except that we do
5743 not initialize at the beginning and we do not supply a
5744 newline by default at the end.
5745 INSWITCH nonzero means don't process %-sequences in SPEC;
5746 in this case, % is treated as an ordinary character.
5747 This is used while substituting switches.
5748 INSWITCH nonzero also causes SPC not to terminate an argument.
5750 Value is zero unless a line was finished
5751 and the command on that line reported an error. */
5754 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
5756 const char *p = spec;
5761 /* If it's an empty string argument to a switch, keep it as is. */
5762 if (inswitch && !*p)
5766 /* If substituting a switch, treat all chars like letters.
5767 Otherwise, NL, SPC, TAB and % are special. */
5768 switch (inswitch ? 'a' : c)
5773 if (argbuf.length () > 0
5774 && !strcmp (argbuf.last (), "|"))
5776 /* A `|' before the newline means use a pipe here,
5777 but only if -pipe was specified.
5778 Otherwise, execute now and don't pass the `|' as an arg. */
5781 input_from_pipe = 1;
5788 set_collect_gcc_options ();
5790 if (argbuf.length () > 0)
5796 /* Reinitialize for a new command, and for a new argument. */
5799 delete_this_arg = 0;
5800 this_is_output_file = 0;
5801 this_is_library_file = 0;
5802 this_is_linker_script = 0;
5803 input_from_pipe = 0;
5810 obstack_1grow (&obstack, c);
5818 /* Reinitialize for a new argument. */
5819 delete_this_arg = 0;
5820 this_is_output_file = 0;
5821 this_is_library_file = 0;
5822 this_is_linker_script = 0;
5829 fatal_error (input_location, "spec %qs invalid", spec);
5832 /* Don't use %b in the linker command. */
5833 gcc_assert (suffixed_basename_length);
5834 if (!this_is_output_file && dumpdir_length)
5835 obstack_grow (&obstack, dumpdir, dumpdir_length);
5836 if (this_is_output_file || !outbase_length)
5837 obstack_grow (&obstack, input_basename, basename_length);
5839 obstack_grow (&obstack, outbase, outbase_length);
5840 if (compare_debug < 0)
5841 obstack_grow (&obstack, ".gk", 3);
5846 /* Don't use %B in the linker command. */
5847 gcc_assert (suffixed_basename_length);
5848 if (!this_is_output_file && dumpdir_length)
5849 obstack_grow (&obstack, dumpdir, dumpdir_length);
5850 if (this_is_output_file || !outbase_length)
5851 obstack_grow (&obstack, input_basename, basename_length);
5853 obstack_grow (&obstack, outbase, outbase_length);
5854 if (compare_debug < 0)
5855 obstack_grow (&obstack, ".gk", 3);
5856 obstack_grow (&obstack, input_basename + basename_length,
5857 suffixed_basename_length - basename_length);
5863 delete_this_arg = 2;
5866 /* Dump out the directories specified with LIBRARY_PATH,
5867 followed by the absolute directories
5868 that we search for startfiles. */
5871 struct spec_path_info info;
5874 info.append_len = 0;
5875 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
5876 /* Used on systems which record the specified -L dirs
5877 and use them to search for dynamic linking.
5878 Relative directories always come from -B,
5879 and it is better not to use them for searching
5880 at run time. In particular, stage1 loses. */
5881 info.omit_relative = true;
5883 info.omit_relative = false;
5885 info.separate_options = false;
5887 for_each_path (&startfile_prefixes, true, 0, spec_path, &info);
5892 /* %efoo means report an error with `foo' as error message
5893 and don't execute any more commands for this file. */
5897 while (*p != 0 && *p != '\n')
5899 buf = (char *) alloca (p - q + 1);
5900 strncpy (buf, q, p - q);
5902 error ("%s", _(buf));
5907 /* %nfoo means report a notice with `foo' on stderr. */
5911 while (*p != 0 && *p != '\n')
5913 buf = (char *) alloca (p - q + 1);
5914 strncpy (buf, q, p - q);
5916 inform (UNKNOWN_LOCATION, "%s", _(buf));
5926 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
5927 defined, and it is not a directory, and it is
5928 writable, use it. Otherwise, treat this like any
5929 other temporary file. */
5931 if ((!save_temps_flag)
5932 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
5933 && (access (HOST_BIT_BUCKET, W_OK) == 0))
5935 obstack_grow (&obstack, HOST_BIT_BUCKET,
5936 strlen (HOST_BIT_BUCKET));
5937 delete_this_arg = 0;
5942 goto create_temp_file;
5946 obstack_1grow (&obstack, '-');
5947 delete_this_arg = 0;
5950 /* consume suffix */
5951 while (*p == '.' || ISALNUM ((unsigned char) *p))
5953 if (p[0] == '%' && p[1] == 'O')
5958 goto create_temp_file;
5962 /* consume suffix */
5963 while (*p == '.' || ISALNUM ((unsigned char) *p))
5965 if (p[0] == '%' && p[1] == 'O')
5970 goto create_temp_file;
5976 struct temp_name *t;
5978 const char *suffix = p;
5979 char *saved_suffix = NULL;
5981 while (*p == '.' || ISALNUM ((unsigned char) *p))
5983 suffix_length = p - suffix;
5984 if (p[0] == '%' && p[1] == 'O')
5987 /* We don't support extra suffix characters after %O. */
5988 if (*p == '.' || ISALNUM ((unsigned char) *p))
5989 fatal_error (input_location,
5990 "spec %qs has invalid %<%%0%c%>", spec, *p);
5991 if (suffix_length == 0)
5992 suffix = TARGET_OBJECT_SUFFIX;
5996 = XNEWVEC (char, suffix_length
5997 + strlen (TARGET_OBJECT_SUFFIX) + 1);
5998 strncpy (saved_suffix, suffix, suffix_length);
5999 strcpy (saved_suffix + suffix_length,
6000 TARGET_OBJECT_SUFFIX);
6002 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
6005 if (compare_debug < 0)
6007 suffix = concat (".gk", suffix, NULL);
6011 /* If -save-temps was specified, use that for the
6013 if (save_temps_flag)
6016 bool adjusted_suffix = false;
6018 && !outbase_length && !basename_length
6019 && !dumpdir_trailing_dash_added)
6021 adjusted_suffix = true;
6025 temp_filename_length
6026 = dumpdir_length + suffix_length + 1;
6028 temp_filename_length += outbase_length;
6030 temp_filename_length += basename_length;
6031 tmp = (char *) alloca (temp_filename_length);
6033 memcpy (tmp, dumpdir, dumpdir_length);
6035 memcpy (tmp + dumpdir_length, outbase,
6037 else if (basename_length)
6038 memcpy (tmp + dumpdir_length, input_basename,
6040 memcpy (tmp + temp_filename_length - suffix_length - 1,
6041 suffix, suffix_length);
6042 if (adjusted_suffix)
6044 adjusted_suffix = false;
6048 tmp[temp_filename_length - 1] = '\0';
6049 temp_filename = tmp;
6051 if (filename_cmp (temp_filename, gcc_input_filename) != 0)
6053 #ifndef HOST_LACKS_INODE_NUMBERS
6054 struct stat st_temp;
6056 /* Note, set_input() resets input_stat_set to 0. */
6057 if (input_stat_set == 0)
6059 input_stat_set = stat (gcc_input_filename,
6061 if (input_stat_set >= 0)
6065 /* If we have the stat for the gcc_input_filename
6066 and we can do the stat for the temp_filename
6067 then the they could still refer to the same
6068 file if st_dev/st_ino's are the same. */
6069 if (input_stat_set != 1
6070 || stat (temp_filename, &st_temp) < 0
6071 || input_stat.st_dev != st_temp.st_dev
6072 || input_stat.st_ino != st_temp.st_ino)
6074 /* Just compare canonical pathnames. */
6075 char* input_realname = lrealpath (gcc_input_filename);
6076 char* temp_realname = lrealpath (temp_filename);
6077 bool files_differ = filename_cmp (input_realname, temp_realname);
6078 free (input_realname);
6079 free (temp_realname);
6084 = save_string (temp_filename,
6085 temp_filename_length - 1);
6086 obstack_grow (&obstack, temp_filename,
6087 temp_filename_length);
6089 delete_this_arg = 0;
6095 /* See if we already have an association of %g/%u/%U and
6097 for (t = temp_names; t; t = t->next)
6098 if (t->length == suffix_length
6099 && strncmp (t->suffix, suffix, suffix_length) == 0
6100 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
6103 /* Make a new association if needed. %u and %j
6105 if (t == 0 || c == 'u' || c == 'j')
6109 t = XNEW (struct temp_name);
6110 t->next = temp_names;
6113 t->length = suffix_length;
6116 t->suffix = saved_suffix;
6117 saved_suffix = NULL;
6120 t->suffix = save_string (suffix, suffix_length);
6121 t->unique = (c == 'u' || c == 'U' || c == 'j');
6122 temp_filename = make_temp_file (t->suffix);
6123 temp_filename_length = strlen (temp_filename);
6124 t->filename = temp_filename;
6125 t->filename_length = temp_filename_length;
6128 free (saved_suffix);
6130 obstack_grow (&obstack, t->filename, t->filename_length);
6131 delete_this_arg = 1;
6139 /* We are going to expand `%i' into `@FILE', where FILE
6140 is a newly-created temporary filename. The filenames
6141 that would usually be expanded in place of %o will be
6142 written to the temporary file. */
6143 if (at_file_supplied)
6146 for (i = 0; (int) i < n_infiles; i++)
6147 if (compile_input_file_p (&infiles[i]))
6149 store_arg (infiles[i].name, 0, 0);
6150 infiles[i].compiled = true;
6153 if (at_file_supplied)
6158 obstack_grow (&obstack, gcc_input_filename,
6159 input_filename_length);
6166 struct spec_path_info info;
6170 do_spec_1 ("-imultilib", 1, NULL);
6171 /* Make this a separate argument. */
6172 do_spec_1 (" ", 0, NULL);
6173 do_spec_1 (multilib_dir, 1, NULL);
6174 do_spec_1 (" ", 0, NULL);
6179 do_spec_1 ("-imultiarch", 1, NULL);
6180 /* Make this a separate argument. */
6181 do_spec_1 (" ", 0, NULL);
6182 do_spec_1 (multiarch_dir, 1, NULL);
6183 do_spec_1 (" ", 0, NULL);
6186 if (gcc_exec_prefix)
6188 do_spec_1 ("-iprefix", 1, NULL);
6189 /* Make this a separate argument. */
6190 do_spec_1 (" ", 0, NULL);
6191 do_spec_1 (gcc_exec_prefix, 1, NULL);
6192 do_spec_1 (" ", 0, NULL);
6195 if (target_system_root_changed ||
6196 (target_system_root && target_sysroot_hdrs_suffix))
6198 do_spec_1 ("-isysroot", 1, NULL);
6199 /* Make this a separate argument. */
6200 do_spec_1 (" ", 0, NULL);
6201 do_spec_1 (target_system_root, 1, NULL);
6202 if (target_sysroot_hdrs_suffix)
6203 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
6204 do_spec_1 (" ", 0, NULL);
6207 info.option = "-isystem";
6208 info.append = "include";
6209 info.append_len = strlen (info.append);
6210 info.omit_relative = false;
6211 info.separate_options = true;
6213 for_each_path (&include_prefixes, false, info.append_len,
6216 info.append = "include-fixed";
6217 if (*sysroot_hdrs_suffix_spec)
6218 info.append = concat (info.append, dir_separator_str,
6219 multilib_dir, NULL);
6220 info.append_len = strlen (info.append);
6221 for_each_path (&include_prefixes, false, info.append_len,
6227 /* We are going to expand `%o' into `@FILE', where FILE
6228 is a newly-created temporary filename. The filenames
6229 that would usually be expanded in place of %o will be
6230 written to the temporary file. */
6231 if (at_file_supplied)
6234 for (i = 0; i < n_infiles + lang_specific_extra_outfiles; i++)
6236 store_arg (outfiles[i], 0, 0);
6238 if (at_file_supplied)
6243 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
6248 this_is_library_file = 1;
6252 this_is_linker_script = 1;
6256 outfiles[input_file_number] = NULL;
6260 this_is_output_file = 1;
6265 unsigned int cur_index = argbuf.length ();
6266 /* Handle the {...} following the %W. */
6268 fatal_error (input_location,
6269 "spec %qs has invalid %<%%W%c%>", spec, *p);
6270 p = handle_braces (p + 1);
6274 /* If any args were output, mark the last one for deletion
6276 if (argbuf.length () != cur_index)
6277 record_temp_file (argbuf.last (), 0, 1);
6282 /* Handle the {...} following the %@. */
6284 fatal_error (input_location,
6285 "spec %qs has invalid %<%%@%c%>", spec, *p);
6286 if (at_file_supplied)
6288 p = handle_braces (p + 1);
6289 if (at_file_supplied)
6295 /* %x{OPTION} records OPTION for %X to output. */
6303 /* Skip past the option value and make a copy. */
6305 fatal_error (input_location,
6306 "spec %qs has invalid %<%%x%c%>", spec, *p);
6309 string = save_string (p1 + 1, p - p1 - 2);
6311 /* See if we already recorded this option. */
6312 FOR_EACH_VEC_ELT (linker_options, ix, opt)
6313 if (! strcmp (string, opt))
6319 /* This option is new; add it. */
6320 add_linker_option (string, strlen (string));
6325 /* Dump out the options accumulated previously using %x. */
6327 do_specs_vec (linker_options);
6330 /* Dump out the options accumulated previously using -Wa,. */
6332 do_specs_vec (assembler_options);
6335 /* Dump out the options accumulated previously using -Wp,. */
6337 do_specs_vec (preprocessor_options);
6340 /* Here are digits and numbers that just process
6341 a certain constant string as a spec. */
6344 value = do_spec_1 (cc1_spec, 0, NULL);
6350 value = do_spec_1 (cc1plus_spec, 0, NULL);
6356 value = do_spec_1 (asm_spec, 0, NULL);
6362 value = do_spec_1 (asm_final_spec, 0, NULL);
6369 const char *const spec
6370 = (input_file_compiler->cpp_spec
6371 ? input_file_compiler->cpp_spec
6373 value = do_spec_1 (spec, 0, NULL);
6380 value = do_spec_1 (endfile_spec, 0, NULL);
6386 value = do_spec_1 (link_spec, 0, NULL);
6392 value = do_spec_1 (lib_spec, 0, NULL);
6398 if (multilib_os_dir == NULL)
6399 obstack_1grow (&obstack, '.');
6401 obstack_grow (&obstack, multilib_os_dir,
6402 strlen (multilib_os_dir));
6406 value = do_spec_1 (libgcc_spec, 0, NULL);
6412 /* We assume there is a directory
6413 separator at the end of this string. */
6414 if (target_system_root)
6416 obstack_grow (&obstack, target_system_root,
6417 strlen (target_system_root));
6418 if (target_sysroot_suffix)
6419 obstack_grow (&obstack, target_sysroot_suffix,
6420 strlen (target_sysroot_suffix));
6425 value = do_spec_1 (startfile_spec, 0, NULL);
6430 /* Here we define characters other than letters and digits. */
6433 p = handle_braces (p);
6439 p = handle_spec_function (p, NULL, soft_matched_part);
6445 obstack_1grow (&obstack, '%');
6452 while (p[len] && p[len] != ' ' && p[len] != '%')
6454 suffix_subst = save_string (p - 1, len + 1);
6459 /* Henceforth ignore the option(s) matching the pattern
6465 int have_wildcard = 0;
6470 switch_option = SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC;
6472 switch_option = SWITCH_IGNORE;
6474 while (p[len] && p[len] != ' ' && p[len] != '\t')
6477 if (p[len-1] == '*')
6480 for (i = 0; i < n_switches; i++)
6481 if (!strncmp (switches[i].part1, p, len - have_wildcard)
6482 && (have_wildcard || switches[i].part1[len] == '\0'))
6484 switches[i].live_cond |= switch_option;
6485 /* User switch be validated from validate_all_switches.
6486 when the definition is seen from the spec file.
6487 If not defined anywhere, will be rejected. */
6488 if (switches[i].known)
6489 switches[i].validated = true;
6497 if (soft_matched_part)
6499 if (soft_matched_part[0])
6500 do_spec_1 (soft_matched_part, 1, NULL);
6501 /* Only insert a space after the substitution if it is at the
6502 end of the current sequence. So if:
6504 "%{foo=*:bar%*}%{foo=*:one%*two}"
6506 matches -foo=hello then it will produce:
6508 barhello onehellotwo
6510 if (*p == 0 || *p == '}')
6511 do_spec_1 (" ", 0, NULL);
6514 /* Catch the case where a spec string contains something like
6515 '%{foo:%*}'. i.e. there is no * in the pattern on the left
6516 hand side of the :. */
6517 error ("spec failure: %<%%*%> has not been initialized by pattern match");
6520 /* Process a string found as the value of a spec given by name.
6521 This feature allows individual machine descriptions
6522 to add and use their own specs. */
6525 const char *name = p;
6526 struct spec_list *sl;
6529 /* The string after the S/P is the name of a spec that is to be
6531 while (*p && *p != ')')
6534 /* See if it's in the list. */
6535 for (len = p - name, sl = specs; sl; sl = sl->next)
6536 if (sl->name_len == len && !strncmp (sl->name, name, len))
6538 name = *(sl->ptr_spec);
6540 fnotice (stderr, "Processing spec (%s), which is '%s'\n",
6548 value = do_spec_1 (name, 0, NULL);
6553 /* Discard the closing paren. */
6560 /* End a previous argument, if there is one, then issue an
6568 error ("spec failure: unrecognized spec option %qc", c);
6574 /* Backslash: treat next character as ordinary. */
6577 /* When adding more cases that previously matched default, make
6578 sure to adjust quote_spec_char_p as well. */
6582 /* Ordinary character: put it into the current argument. */
6583 obstack_1grow (&obstack, c);
6587 /* End of string. If we are processing a spec function, we need to
6588 end any pending argument. */
6589 if (processing_spec_function)
6595 /* Look up a spec function. */
6597 static const struct spec_function *
6598 lookup_spec_function (const char *name)
6600 const struct spec_function *sf;
6602 for (sf = static_spec_functions; sf->name != NULL; sf++)
6603 if (strcmp (sf->name, name) == 0)
6609 /* Evaluate a spec function. */
6612 eval_spec_function (const char *func, const char *args,
6613 const char *soft_matched_part)
6615 const struct spec_function *sf;
6616 const char *funcval;
6618 /* Saved spec processing context. */
6619 vec<const_char_p> save_argbuf;
6622 int save_delete_this_arg;
6623 int save_this_is_output_file;
6624 int save_this_is_library_file;
6625 int save_input_from_pipe;
6626 int save_this_is_linker_script;
6627 const char *save_suffix_subst;
6629 int save_growing_size;
6630 void *save_growing_value = NULL;
6632 sf = lookup_spec_function (func);
6634 fatal_error (input_location, "unknown spec function %qs", func);
6636 /* Push the spec processing context. */
6637 save_argbuf = argbuf;
6639 save_arg_going = arg_going;
6640 save_delete_this_arg = delete_this_arg;
6641 save_this_is_output_file = this_is_output_file;
6642 save_this_is_library_file = this_is_library_file;
6643 save_this_is_linker_script = this_is_linker_script;
6644 save_input_from_pipe = input_from_pipe;
6645 save_suffix_subst = suffix_subst;
6647 /* If we have some object growing now, finalize it so the args and function
6648 eval proceed from a cleared context. This is needed to prevent the first
6649 constructed arg from mistakenly including the growing value. We'll push
6650 this value back on the obstack once the function evaluation is done, to
6651 restore a consistent processing context for our caller. This is fine as
6652 the address of growing objects isn't guaranteed to remain stable until
6653 they are finalized, and we expect this situation to be rare enough for
6654 the extra copy not to be an issue. */
6655 save_growing_size = obstack_object_size (&obstack);
6656 if (save_growing_size > 0)
6657 save_growing_value = obstack_finish (&obstack);
6659 /* Create a new spec processing context, and build the function
6663 if (do_spec_2 (args, soft_matched_part) < 0)
6664 fatal_error (input_location, "error in arguments to spec function %qs",
6667 /* argbuf_index is an index for the next argument to be inserted, and
6668 so contains the count of the args already inserted. */
6670 funcval = (*sf->func) (argbuf.length (),
6673 /* Pop the spec processing context. */
6675 argbuf = save_argbuf;
6677 arg_going = save_arg_going;
6678 delete_this_arg = save_delete_this_arg;
6679 this_is_output_file = save_this_is_output_file;
6680 this_is_library_file = save_this_is_library_file;
6681 this_is_linker_script = save_this_is_linker_script;
6682 input_from_pipe = save_input_from_pipe;
6683 suffix_subst = save_suffix_subst;
6685 if (save_growing_size > 0)
6686 obstack_grow (&obstack, save_growing_value, save_growing_size);
6691 /* Handle a spec function call of the form:
6695 ARGS is processed as a spec in a separate context and split into an
6696 argument vector in the normal fashion. The function returns a string
6697 containing a spec which we then process in the caller's context, or
6698 NULL if no processing is required.
6700 If RETVAL_NONNULL is not NULL, then store a bool whether function
6703 SOFT_MATCHED_PART holds the current value of a matched * pattern, which
6704 may be re-expanded with a %* as part of the function arguments. */
6707 handle_spec_function (const char *p, bool *retval_nonnull,
6708 const char *soft_matched_part)
6711 const char *endp, *funcval;
6714 processing_spec_function++;
6716 /* Get the function name. */
6717 for (endp = p; *endp != '\0'; endp++)
6719 if (*endp == '(') /* ) */
6721 /* Only allow [A-Za-z0-9], -, and _ in function names. */
6722 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
6723 fatal_error (input_location, "malformed spec function name");
6725 if (*endp != '(') /* ) */
6726 fatal_error (input_location, "no arguments for spec function");
6727 func = save_string (p, endp - p);
6730 /* Get the arguments. */
6731 for (count = 0; *endp != '\0'; endp++)
6740 else if (*endp == '(') /* ) */
6745 fatal_error (input_location, "malformed spec function arguments");
6746 args = save_string (p, endp - p);
6749 /* p now points to just past the end of the spec function expression. */
6751 funcval = eval_spec_function (func, args, soft_matched_part);
6752 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
6755 *retval_nonnull = funcval != NULL;
6760 processing_spec_function--;
6765 /* Inline subroutine of handle_braces. Returns true if the current
6766 input suffix matches the atom bracketed by ATOM and END_ATOM. */
6768 input_suffix_matches (const char *atom, const char *end_atom)
6770 return (input_suffix
6771 && !strncmp (input_suffix, atom, end_atom - atom)
6772 && input_suffix[end_atom - atom] == '\0');
6775 /* Subroutine of handle_braces. Returns true if the current
6776 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
6778 input_spec_matches (const char *atom, const char *end_atom)
6780 return (input_file_compiler
6781 && input_file_compiler->suffix
6782 && input_file_compiler->suffix[0] != '\0'
6783 && !strncmp (input_file_compiler->suffix + 1, atom,
6785 && input_file_compiler->suffix[end_atom - atom + 1] == '\0');
6788 /* Subroutine of handle_braces. Returns true if a switch
6789 matching the atom bracketed by ATOM and END_ATOM appeared on the
6792 switch_matches (const char *atom, const char *end_atom, int starred)
6795 int len = end_atom - atom;
6796 int plen = starred ? len : -1;
6798 for (i = 0; i < n_switches; i++)
6799 if (!strncmp (switches[i].part1, atom, len)
6800 && (starred || switches[i].part1[len] == '\0')
6801 && check_live_switch (i, plen))
6804 /* Check if a switch with separated form matching the atom.
6805 We check -D and -U switches. */
6806 else if (switches[i].args != 0)
6808 if ((*switches[i].part1 == 'D' || *switches[i].part1 == 'U')
6809 && *switches[i].part1 == atom[0])
6811 if (!strncmp (switches[i].args[0], &atom[1], len - 1)
6812 && (starred || (switches[i].part1[1] == '\0'
6813 && switches[i].args[0][len - 1] == '\0'))
6814 && check_live_switch (i, (starred ? 1 : -1)))
6822 /* Inline subroutine of handle_braces. Mark all of the switches which
6823 match ATOM (extends to END_ATOM; STARRED indicates whether there
6824 was a star after the atom) for later processing. */
6826 mark_matching_switches (const char *atom, const char *end_atom, int starred)
6829 int len = end_atom - atom;
6830 int plen = starred ? len : -1;
6832 for (i = 0; i < n_switches; i++)
6833 if (!strncmp (switches[i].part1, atom, len)
6834 && (starred || switches[i].part1[len] == '\0')
6835 && check_live_switch (i, plen))
6836 switches[i].ordering = 1;
6839 /* Inline subroutine of handle_braces. Process all the currently
6840 marked switches through give_switch, and clear the marks. */
6842 process_marked_switches (void)
6846 for (i = 0; i < n_switches; i++)
6847 if (switches[i].ordering == 1)
6849 switches[i].ordering = 0;
6854 /* Handle a %{ ... } construct. P points just inside the leading {.
6855 Returns a pointer one past the end of the brace block, or 0
6856 if we call do_spec_1 and that returns -1. */
6859 handle_braces (const char *p)
6861 const char *atom, *end_atom;
6862 const char *d_atom = NULL, *d_end_atom = NULL;
6863 char *esc_buf = NULL, *d_esc_buf = NULL;
6865 const char *orig = p;
6873 bool a_must_be_last = false;
6874 bool ordered_set = false;
6875 bool disjunct_set = false;
6876 bool disj_matched = false;
6877 bool disj_starred = true;
6878 bool n_way_choice = false;
6879 bool n_way_matched = false;
6881 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
6888 /* Scan one "atom" (S in the description above of %{}, possibly
6889 with '!', '.', '@', ',', or '*' modifiers). */
6891 a_is_suffix = false;
6892 a_is_starred = false;
6893 a_is_negated = false;
6894 a_is_spectype = false;
6898 p++, a_is_negated = true;
6901 if (*p == '%' && p[1] == ':')
6905 p = handle_spec_function (p + 2, &a_matched, NULL);
6910 p++, a_is_suffix = true;
6912 p++, a_is_spectype = true;
6916 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
6917 || *p == ',' || *p == '.' || *p == '@' || *p == '\\')
6923 fatal_error (input_location,
6924 "braced spec %qs ends in escape", orig);
6936 if (esc_buf && esc_buf != d_esc_buf)
6939 ep = esc_buf = (char *) xmalloc (end_atom - atom - esc + 1);
6940 for (ap = atom; ap != end_atom; ap++, ep++)
6952 p++, a_is_starred = 1;
6959 /* Substitute the switch(es) indicated by the current atom. */
6961 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
6962 || a_is_spectype || atom == end_atom)
6965 mark_matching_switches (atom, end_atom, a_is_starred);
6968 process_marked_switches ();
6972 /* Substitute some text if the current atom appears as a switch
6974 disjunct_set = true;
6978 if (atom && atom == end_atom)
6980 if (!n_way_choice || disj_matched || *p == '|'
6981 || a_is_negated || a_is_suffix || a_is_spectype
6985 /* An empty term may appear as the last choice of an
6986 N-way choice set; it means "otherwise". */
6987 a_must_be_last = true;
6988 disj_matched = !n_way_matched;
6989 disj_starred = false;
6993 if ((a_is_suffix || a_is_spectype) && a_is_starred)
6997 disj_starred = false;
6999 /* Don't bother testing this atom if we already have a
7001 if (!disj_matched && !n_way_matched)
7004 /* a_matched is already set by handle_spec_function. */;
7005 else if (a_is_suffix)
7006 a_matched = input_suffix_matches (atom, end_atom);
7007 else if (a_is_spectype)
7008 a_matched = input_spec_matches (atom, end_atom);
7010 a_matched = switch_matches (atom, end_atom, a_is_starred);
7012 if (a_matched != a_is_negated)
7014 disj_matched = true;
7016 d_end_atom = end_atom;
7017 d_esc_buf = esc_buf;
7024 /* Found the body, that is, the text to substitute if the
7025 current disjunction matches. */
7026 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
7027 disj_matched && !n_way_matched);
7031 /* If we have an N-way choice, reset state for the next
7035 n_way_choice = true;
7036 n_way_matched |= disj_matched;
7037 disj_matched = false;
7038 disj_starred = true;
7039 d_atom = d_end_atom = NULL;
7048 while (*p++ != '}');
7051 if (d_esc_buf && d_esc_buf != esc_buf)
7059 fatal_error (input_location, "braced spec %qs is invalid at %qc", orig, *p);
7064 /* Subroutine of handle_braces. Scan and process a brace substitution body
7065 (X in the description of %{} syntax). P points one past the colon;
7066 ATOM and END_ATOM bracket the first atom which was found to be true
7067 (present) in the current disjunction; STARRED indicates whether all
7068 the atoms in the current disjunction were starred (for syntax validation);
7069 MATCHED indicates whether the disjunction matched or not, and therefore
7070 whether or not the body is to be processed through do_spec_1 or just
7071 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
7075 process_brace_body (const char *p, const char *atom, const char *end_atom,
7076 int starred, int matched)
7078 const char *body, *end_body;
7079 unsigned int nesting_level;
7080 bool have_subst = false;
7082 /* Locate the closing } or ;, honoring nested braces.
7083 Trim trailing whitespace. */
7092 if (!--nesting_level)
7095 else if (*p == ';' && nesting_level == 1)
7097 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
7099 else if (*p == '\0')
7105 while (end_body[-1] == ' ' || end_body[-1] == '\t')
7108 if (have_subst && !starred)
7113 /* Copy the substitution body to permanent storage and execute it.
7114 If have_subst is false, this is a simple matter of running the
7115 body through do_spec_1... */
7116 char *string = save_string (body, end_body - body);
7119 if (do_spec_1 (string, 0, NULL) < 0)
7127 /* ... but if have_subst is true, we have to process the
7128 body once for each matching switch, with %* set to the
7129 variant part of the switch. */
7130 unsigned int hard_match_len = end_atom - atom;
7133 for (i = 0; i < n_switches; i++)
7134 if (!strncmp (switches[i].part1, atom, hard_match_len)
7135 && check_live_switch (i, hard_match_len))
7137 if (do_spec_1 (string, 0,
7138 &switches[i].part1[hard_match_len]) < 0)
7143 /* Pass any arguments this switch has. */
7145 suffix_subst = NULL;
7154 fatal_error (input_location, "braced spec body %qs is invalid", body);
7157 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
7158 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
7159 spec, or -1 if either exact match or %* is used.
7161 A -O switch is obsoleted by a later -O switch. A -f, -g, -m, or -W switch
7162 whose value does not begin with "no-" is obsoleted by the same value
7163 with the "no-", similarly for a switch with the "no-" prefix. */
7166 check_live_switch (int switchnum, int prefix_length)
7168 const char *name = switches[switchnum].part1;
7171 /* If we already processed this switch and determined if it was
7172 live or not, return our past determination. */
7173 if (switches[switchnum].live_cond != 0)
7174 return ((switches[switchnum].live_cond & SWITCH_LIVE) != 0
7175 && (switches[switchnum].live_cond & SWITCH_FALSE) == 0
7176 && (switches[switchnum].live_cond & SWITCH_IGNORE_PERMANENTLY)
7179 /* In the common case of {<at-most-one-letter>*}, a negating
7180 switch would always match, so ignore that case. We will just
7181 send the conflicting switches to the compiler phase. */
7182 if (prefix_length >= 0 && prefix_length <= 1)
7185 /* Now search for duplicate in a manner that depends on the name. */
7189 for (i = switchnum + 1; i < n_switches; i++)
7190 if (switches[i].part1[0] == 'O')
7192 switches[switchnum].validated = true;
7193 switches[switchnum].live_cond = SWITCH_FALSE;
7198 case 'W': case 'f': case 'm': case 'g':
7199 if (! strncmp (name + 1, "no-", 3))
7201 /* We have Xno-YYY, search for XYYY. */
7202 for (i = switchnum + 1; i < n_switches; i++)
7203 if (switches[i].part1[0] == name[0]
7204 && ! strcmp (&switches[i].part1[1], &name[4]))
7206 /* --specs are validated with the validate_switches mechanism. */
7207 if (switches[switchnum].known)
7208 switches[switchnum].validated = true;
7209 switches[switchnum].live_cond = SWITCH_FALSE;
7215 /* We have XYYY, search for Xno-YYY. */
7216 for (i = switchnum + 1; i < n_switches; i++)
7217 if (switches[i].part1[0] == name[0]
7218 && switches[i].part1[1] == 'n'
7219 && switches[i].part1[2] == 'o'
7220 && switches[i].part1[3] == '-'
7221 && !strcmp (&switches[i].part1[4], &name[1]))
7223 /* --specs are validated with the validate_switches mechanism. */
7224 if (switches[switchnum].known)
7225 switches[switchnum].validated = true;
7226 switches[switchnum].live_cond = SWITCH_FALSE;
7233 /* Otherwise the switch is live. */
7234 switches[switchnum].live_cond |= SWITCH_LIVE;
7238 /* Pass a switch to the current accumulating command
7239 in the same form that we received it.
7240 SWITCHNUM identifies the switch; it is an index into
7241 the vector of switches gcc received, which is `switches'.
7242 This cannot fail since it never finishes a command line.
7244 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
7247 give_switch (int switchnum, int omit_first_word)
7249 if ((switches[switchnum].live_cond & SWITCH_IGNORE) != 0)
7252 if (!omit_first_word)
7254 do_spec_1 ("-", 0, NULL);
7255 do_spec_1 (switches[switchnum].part1, 1, NULL);
7258 if (switches[switchnum].args != 0)
7261 for (p = switches[switchnum].args; *p; p++)
7263 const char *arg = *p;
7265 do_spec_1 (" ", 0, NULL);
7268 unsigned length = strlen (arg);
7271 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
7272 if (arg[length] == '.')
7274 (CONST_CAST (char *, arg))[length] = 0;
7278 do_spec_1 (arg, 1, NULL);
7280 (CONST_CAST (char *, arg))[length] = '.';
7281 do_spec_1 (suffix_subst, 1, NULL);
7284 do_spec_1 (arg, 1, NULL);
7288 do_spec_1 (" ", 0, NULL);
7289 switches[switchnum].validated = true;
7292 /* Print GCC configuration (e.g. version, thread model, target,
7293 configuration_arguments) to a given FILE. */
7296 print_configuration (FILE *file)
7301 fnotice (file, "Target: %s\n", spec_machine);
7302 fnotice (file, "Configured with: %s\n", configuration_arguments);
7304 #ifdef THREAD_MODEL_SPEC
7305 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
7306 but there's no point in doing all this processing just to get
7307 thread_model back. */
7308 obstack_init (&obstack);
7309 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
7310 obstack_1grow (&obstack, '\0');
7311 thrmod = XOBFINISH (&obstack, const char *);
7313 thrmod = thread_model;
7316 fnotice (file, "Thread model: %s\n", thrmod);
7317 fnotice (file, "Supported LTO compression algorithms: zlib");
7319 fnotice (file, " zstd");
7321 fnotice (file, "\n");
7323 /* compiler_version is truncated at the first space when initialized
7324 from version string, so truncate version_string at the first space
7325 before comparing. */
7326 for (n = 0; version_string[n]; n++)
7327 if (version_string[n] == ' ')
7330 if (! strncmp (version_string, compiler_version, n)
7331 && compiler_version[n] == 0)
7332 fnotice (file, "gcc version %s %s\n", version_string,
7335 fnotice (file, "gcc driver version %s %sexecuting gcc version %s\n",
7336 version_string, pkgversion_string, compiler_version);
7340 #define RETRY_ICE_ATTEMPTS 3
7342 /* Returns true if FILE1 and FILE2 contain equivalent data, 0 otherwise. */
7345 files_equal_p (char *file1, char *file2)
7347 struct stat st1, st2;
7350 const int bufsize = 8192;
7351 char *buf = XNEWVEC (char, bufsize);
7353 fd1 = open (file1, O_RDONLY);
7354 fd2 = open (file2, O_RDONLY);
7356 if (fd1 < 0 || fd2 < 0)
7359 if (fstat (fd1, &st1) < 0 || fstat (fd2, &st2) < 0)
7362 if (st1.st_size != st2.st_size)
7365 for (n = st1.st_size; n; n -= len)
7368 if ((int) len > bufsize / 2)
7371 if (read (fd1, buf, len) != (int) len
7372 || read (fd2, buf + bufsize / 2, len) != (int) len)
7377 if (memcmp (buf, buf + bufsize / 2, len) != 0)
7394 /* Check that compiler's output doesn't differ across runs.
7395 TEMP_STDOUT_FILES and TEMP_STDERR_FILES are arrays of files, containing
7396 stdout and stderr for each compiler run. Return true if all of
7397 TEMP_STDOUT_FILES and TEMP_STDERR_FILES are equivalent. */
7400 check_repro (char **temp_stdout_files, char **temp_stderr_files)
7403 for (i = 0; i < RETRY_ICE_ATTEMPTS - 2; ++i)
7405 if (!files_equal_p (temp_stdout_files[i], temp_stdout_files[i + 1])
7406 || !files_equal_p (temp_stderr_files[i], temp_stderr_files[i + 1]))
7408 fnotice (stderr, "The bug is not reproducible, so it is"
7409 " likely a hardware or OS problem.\n");
7413 return i == RETRY_ICE_ATTEMPTS - 2;
7416 enum attempt_status {
7417 ATTEMPT_STATUS_FAIL_TO_RUN,
7418 ATTEMPT_STATUS_SUCCESS,
7423 /* Run compiler with arguments NEW_ARGV to reproduce the ICE, storing stdout
7424 to OUT_TEMP and stderr to ERR_TEMP. If APPEND is TRUE, append to OUT_TEMP
7425 and ERR_TEMP instead of truncating. If EMIT_SYSTEM_INFO is TRUE, also write
7426 GCC configuration into to ERR_TEMP. Return ATTEMPT_STATUS_FAIL_TO_RUN if
7427 compiler failed to run, ATTEMPT_STATUS_ICE if compiled ICE-ed and
7428 ATTEMPT_STATUS_SUCCESS otherwise. */
7430 static enum attempt_status
7431 run_attempt (const char **new_argv, const char *out_temp,
7432 const char *err_temp, int emit_system_info, int append)
7435 if (emit_system_info)
7437 FILE *file_out = fopen (err_temp, "a");
7438 print_configuration (file_out);
7439 fputs ("\n", file_out);
7445 struct pex_obj *pex;
7447 int pex_flags = PEX_USE_PIPES | PEX_LAST;
7448 enum attempt_status status = ATTEMPT_STATUS_FAIL_TO_RUN;
7451 pex_flags |= PEX_STDOUT_APPEND | PEX_STDERR_APPEND;
7453 pex = pex_init (PEX_USE_PIPES, new_argv[0], NULL);
7455 fatal_error (input_location, "%<pex_init%> failed: %m");
7457 errmsg = pex_run (pex, pex_flags, new_argv[0],
7458 CONST_CAST2 (char *const *, const char **, &new_argv[1]),
7459 out_temp, err_temp, &err);
7463 fatal_error (input_location,
7464 err ? G_ ("cannot execute %qs: %s: %m")
7465 : G_ ("cannot execute %qs: %s"),
7466 new_argv[0], errmsg);
7469 if (!pex_get_status (pex, 1, &exit_status))
7472 switch (WEXITSTATUS (exit_status))
7475 status = ATTEMPT_STATUS_ICE;
7478 case SUCCESS_EXIT_CODE:
7479 status = ATTEMPT_STATUS_SUCCESS;
7491 /* This routine reads lines from IN file, adds C++ style comments
7492 at the begining of each line and writes result into OUT. */
7495 insert_comments (const char *file_in, const char *file_out)
7497 FILE *in = fopen (file_in, "rb");
7498 FILE *out = fopen (file_out, "wb");
7501 bool add_comment = true;
7502 while (fgets (line, sizeof (line), in))
7507 add_comment = strchr (line, '\n') != NULL;
7514 /* This routine adds preprocessed source code into the given ERR_FILE.
7515 To do this, it adds "-E" to NEW_ARGV and execute RUN_ATTEMPT routine to
7516 add information in report file. RUN_ATTEMPT should return
7517 ATTEMPT_STATUS_SUCCESS, in other case we cannot generate the report. */
7520 do_report_bug (const char **new_argv, const int nargs,
7521 char **out_file, char **err_file)
7524 int fd = open (*out_file, O_RDWR | O_APPEND);
7527 write (fd, "\n//", 3);
7528 for (i = 0; i < nargs; i++)
7531 write (fd, new_argv[i], strlen (new_argv[i]));
7533 write (fd, "\n\n", 2);
7535 new_argv[nargs] = "-E";
7536 new_argv[nargs + 1] = NULL;
7538 status = run_attempt (new_argv, *out_file, *err_file, 0, 1);
7540 if (status == ATTEMPT_STATUS_SUCCESS)
7542 fnotice (stderr, "Preprocessed source stored into %s file,"
7543 " please attach this to your bugreport.\n", *out_file);
7544 /* Make sure it is not deleted. */
7550 /* Try to reproduce ICE. If bug is reproducible, generate report .err file
7551 containing GCC configuration, backtrace, compiler's command line options
7552 and preprocessed source code. */
7555 try_generate_repro (const char **argv)
7557 int i, nargs, out_arg = -1, quiet = 0, attempt;
7558 const char **new_argv;
7559 char *temp_files[RETRY_ICE_ATTEMPTS * 2];
7560 char **temp_stdout_files = &temp_files[0];
7561 char **temp_stderr_files = &temp_files[RETRY_ICE_ATTEMPTS];
7563 if (gcc_input_filename == NULL || ! strcmp (gcc_input_filename, "-"))
7566 for (nargs = 0; argv[nargs] != NULL; ++nargs)
7567 /* Only retry compiler ICEs, not preprocessor ones. */
7568 if (! strcmp (argv[nargs], "-E"))
7570 else if (argv[nargs][0] == '-' && argv[nargs][1] == 'o')
7577 /* If the compiler is going to output any time information,
7578 it might varry between invocations. */
7579 else if (! strcmp (argv[nargs], "-quiet"))
7581 else if (! strcmp (argv[nargs], "-ftime-report"))
7584 if (out_arg == -1 || !quiet)
7587 memset (temp_files, '\0', sizeof (temp_files));
7588 new_argv = XALLOCAVEC (const char *, nargs + 4);
7589 memcpy (new_argv, argv, (nargs + 1) * sizeof (const char *));
7590 new_argv[nargs++] = "-frandom-seed=0";
7591 new_argv[nargs++] = "-fdump-noaddr";
7592 new_argv[nargs] = NULL;
7593 if (new_argv[out_arg][2] == '\0')
7594 new_argv[out_arg + 1] = "-";
7596 new_argv[out_arg] = "-o-";
7599 for (attempt = 0; attempt < RETRY_ICE_ATTEMPTS; ++attempt)
7601 int emit_system_info = 0;
7603 temp_stdout_files[attempt] = make_temp_file (".out");
7604 temp_stderr_files[attempt] = make_temp_file (".err");
7606 if (attempt == RETRY_ICE_ATTEMPTS - 1)
7609 emit_system_info = 1;
7612 status = run_attempt (new_argv, temp_stdout_files[attempt],
7613 temp_stderr_files[attempt], emit_system_info,
7616 if (status != ATTEMPT_STATUS_ICE)
7618 fnotice (stderr, "The bug is not reproducible, so it is"
7619 " likely a hardware or OS problem.\n");
7624 if (!check_repro (temp_stdout_files, temp_stderr_files))
7628 /* Insert commented out backtrace into report file. */
7629 char **stderr_commented = &temp_stdout_files[RETRY_ICE_ATTEMPTS - 1];
7630 insert_comments (temp_stderr_files[RETRY_ICE_ATTEMPTS - 1],
7633 /* In final attempt we append compiler options and preprocesssed code to last
7634 generated .out file with configuration and backtrace. */
7635 char **err = &temp_stderr_files[RETRY_ICE_ATTEMPTS - 1];
7636 do_report_bug (new_argv, nargs, stderr_commented, err);
7640 for (i = 0; i < RETRY_ICE_ATTEMPTS * 2; i++)
7643 unlink (temp_stdout_files[i]);
7644 free (temp_stdout_files[i]);
7648 /* Search for a file named NAME trying various prefixes including the
7649 user's -B prefix and some standard ones.
7650 Return the absolute file name found. If nothing is found, return NAME. */
7653 find_file (const char *name)
7655 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true);
7656 return newname ? newname : name;
7659 /* Determine whether a directory exists. If LINKER, return 0 for
7660 certain fixed names not needed by the linker. */
7663 is_directory (const char *path1, bool linker)
7670 /* Ensure the string ends with "/.". The resulting path will be a
7671 directory even if the given path is a symbolic link. */
7672 len1 = strlen (path1);
7673 path = (char *) alloca (3 + len1);
7674 memcpy (path, path1, len1);
7676 if (!IS_DIR_SEPARATOR (cp[-1]))
7677 *cp++ = DIR_SEPARATOR;
7681 /* Exclude directories that the linker is known to search. */
7683 && IS_DIR_SEPARATOR (path[0])
7685 && filename_ncmp (path + 1, "lib", 3) == 0)
7687 && filename_ncmp (path + 1, "usr", 3) == 0
7688 && IS_DIR_SEPARATOR (path[4])
7689 && filename_ncmp (path + 5, "lib", 3) == 0)))
7692 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
7695 /* Set up the various global variables to indicate that we're processing
7696 the input file named FILENAME. */
7699 set_input (const char *filename)
7703 gcc_input_filename = filename;
7704 input_filename_length = strlen (gcc_input_filename);
7705 input_basename = lbasename (gcc_input_filename);
7707 /* Find a suffix starting with the last period,
7708 and set basename_length to exclude that suffix. */
7709 basename_length = strlen (input_basename);
7710 suffixed_basename_length = basename_length;
7711 p = input_basename + basename_length;
7712 while (p != input_basename && *p != '.')
7714 if (*p == '.' && p != input_basename)
7716 basename_length = p - input_basename;
7717 input_suffix = p + 1;
7722 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
7723 we will need to do a stat on the gcc_input_filename. The
7724 INPUT_STAT_SET signals that the stat is needed. */
7728 /* On fatal signals, delete all the temporary files. */
7731 fatal_signal (int signum)
7733 signal (signum, SIG_DFL);
7734 delete_failure_queue ();
7735 delete_temp_files ();
7736 /* Get the same signal again, this time not handled,
7737 so its normal effect occurs. */
7738 kill (getpid (), signum);
7741 /* Compare the contents of the two files named CMPFILE[0] and
7742 CMPFILE[1]. Return zero if they're identical, nonzero
7746 compare_files (char *cmpfile[])
7749 FILE *temp[2] = { NULL, NULL };
7755 void *map[2] = { NULL, NULL };
7757 for (i = 0; i < 2; i++)
7761 if (stat (cmpfile[i], &st) < 0 || !S_ISREG (st.st_mode))
7763 error ("%s: could not determine length of compare-debug file %s",
7764 gcc_input_filename, cmpfile[i]);
7769 length[i] = st.st_size;
7772 if (!ret && length[0] != length[1])
7774 error ("%s: %<-fcompare-debug%> failure (length)", gcc_input_filename);
7779 for (i = 0; i < 2; i++)
7781 int fd = open (cmpfile[i], O_RDONLY);
7784 error ("%s: could not open compare-debug file %s",
7785 gcc_input_filename, cmpfile[i]);
7790 map[i] = mmap (NULL, length[i], PROT_READ, MAP_PRIVATE, fd, 0);
7793 if (map[i] == (void *) MAP_FAILED)
7802 if (memcmp (map[0], map[1], length[0]) != 0)
7804 error ("%s: %<-fcompare-debug%> failure", gcc_input_filename);
7809 for (i = 0; i < 2; i++)
7811 munmap ((caddr_t) map[i], length[i]);
7820 for (i = 0; i < 2; i++)
7822 temp[i] = fopen (cmpfile[i], "r");
7825 error ("%s: could not open compare-debug file %s",
7826 gcc_input_filename, cmpfile[i]);
7832 if (!ret && temp[0] && temp[1])
7836 c0 = fgetc (temp[0]);
7837 c1 = fgetc (temp[1]);
7841 error ("%s: %<-fcompare-debug%> failure",
7842 gcc_input_filename);
7851 for (i = 1; i >= 0; i--)
7860 driver::driver (bool can_finalize, bool debug) :
7861 explicit_link_files (NULL),
7862 decoded_options (NULL)
7864 env.init (can_finalize, debug);
7869 XDELETEVEC (explicit_link_files);
7870 XDELETEVEC (decoded_options);
7873 /* driver::main is implemented as a series of driver:: method calls. */
7876 driver::main (int argc, char **argv)
7880 set_progname (argv[0]);
7881 expand_at_files (&argc, &argv);
7882 decode_argv (argc, const_cast <const char **> (argv));
7883 global_initializations ();
7884 build_multilib_strings ();
7886 putenv_COLLECT_AS_OPTIONS (assembler_options);
7887 putenv_COLLECT_GCC (argv[0]);
7888 maybe_putenv_COLLECT_LTO_WRAPPER ();
7889 maybe_putenv_OFFLOAD_TARGETS ();
7890 handle_unrecognized_options ();
7894 m_option_proposer.suggest_completion (completion);
7898 if (!maybe_print_and_exit ())
7901 early_exit = prepare_infiles ();
7903 return get_exit_code ();
7905 do_spec_on_infiles ();
7906 maybe_run_linker (argv[0]);
7908 return get_exit_code ();
7911 /* Locate the final component of argv[0] after any leading path, and set
7912 the program name accordingly. */
7915 driver::set_progname (const char *argv0) const
7917 const char *p = argv0 + strlen (argv0);
7918 while (p != argv0 && !IS_DIR_SEPARATOR (p[-1]))
7922 xmalloc_set_program_name (progname);
7925 /* Expand any @ files within the command-line args,
7926 setting at_file_supplied if any were expanded. */
7929 driver::expand_at_files (int *argc, char ***argv) const
7931 char **old_argv = *argv;
7933 expandargv (argc, argv);
7935 /* Determine if any expansions were made. */
7936 if (*argv != old_argv)
7937 at_file_supplied = true;
7940 /* Decode the command-line arguments from argc/argv into the
7941 decoded_options array. */
7944 driver::decode_argv (int argc, const char **argv)
7946 init_opts_obstack ();
7947 init_options_struct (&global_options, &global_options_set);
7949 decode_cmdline_options_to_array (argc, argv,
7951 &decoded_options, &decoded_options_count);
7954 /* Perform various initializations and setup. */
7957 driver::global_initializations ()
7959 /* Unlock the stdio streams. */
7960 unlock_std_streams ();
7962 gcc_init_libintl ();
7964 diagnostic_initialize (global_dc, 0);
7965 diagnostic_color_init (global_dc);
7966 diagnostic_urls_init (global_dc);
7968 #ifdef GCC_DRIVER_HOST_INITIALIZATION
7969 /* Perform host dependent initialization when needed. */
7970 GCC_DRIVER_HOST_INITIALIZATION;
7973 if (atexit (delete_temp_files) != 0)
7974 fatal_error (input_location, "atexit failed");
7976 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
7977 signal (SIGINT, fatal_signal);
7979 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
7980 signal (SIGHUP, fatal_signal);
7982 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
7983 signal (SIGTERM, fatal_signal);
7985 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
7986 signal (SIGPIPE, fatal_signal);
7989 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
7990 receive the signal. A different setting is inheritable */
7991 signal (SIGCHLD, SIG_DFL);
7994 /* Parsing and gimplification sometimes need quite large stack.
7995 Increase stack size limits if possible. */
7996 stack_limit_increase (64 * 1024 * 1024);
7998 /* Allocate the argument vector. */
8001 obstack_init (&obstack);
8004 /* Build multilib_select, et. al from the separate lines that make up each
8005 multilib selection. */
8008 driver::build_multilib_strings () const
8012 const char *const *q = multilib_raw;
8015 obstack_init (&multilib_obstack);
8016 while ((p = *q++) != (char *) 0)
8017 obstack_grow (&multilib_obstack, p, strlen (p));
8019 obstack_1grow (&multilib_obstack, 0);
8020 multilib_select = XOBFINISH (&multilib_obstack, const char *);
8022 q = multilib_matches_raw;
8023 while ((p = *q++) != (char *) 0)
8024 obstack_grow (&multilib_obstack, p, strlen (p));
8026 obstack_1grow (&multilib_obstack, 0);
8027 multilib_matches = XOBFINISH (&multilib_obstack, const char *);
8029 q = multilib_exclusions_raw;
8030 while ((p = *q++) != (char *) 0)
8031 obstack_grow (&multilib_obstack, p, strlen (p));
8033 obstack_1grow (&multilib_obstack, 0);
8034 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *);
8036 q = multilib_reuse_raw;
8037 while ((p = *q++) != (char *) 0)
8038 obstack_grow (&multilib_obstack, p, strlen (p));
8040 obstack_1grow (&multilib_obstack, 0);
8041 multilib_reuse = XOBFINISH (&multilib_obstack, const char *);
8044 for (size_t i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
8047 obstack_1grow (&multilib_obstack, ' ');
8048 obstack_grow (&multilib_obstack,
8049 multilib_defaults_raw[i],
8050 strlen (multilib_defaults_raw[i]));
8054 obstack_1grow (&multilib_obstack, 0);
8055 multilib_defaults = XOBFINISH (&multilib_obstack, const char *);
8059 /* Set up the spec-handling machinery. */
8062 driver::set_up_specs () const
8064 const char *spec_machine_suffix;
8068 #ifdef INIT_ENVIRONMENT
8069 /* Set up any other necessary machine specific environment variables. */
8070 xputenv (INIT_ENVIRONMENT);
8073 /* Make a table of what switches there are (switches, n_switches).
8074 Make a table of specified input files (infiles, n_infiles).
8075 Decode switches that are handled locally. */
8077 process_command (decoded_options_count, decoded_options);
8079 /* Initialize the vector of specs to just the default.
8080 This means one element containing 0s, as a terminator. */
8082 compilers = XNEWVAR (struct compiler, sizeof default_compilers);
8083 memcpy (compilers, default_compilers, sizeof default_compilers);
8084 n_compilers = n_default_compilers;
8086 /* Read specs from a file if there is one. */
8088 machine_suffix = concat (spec_host_machine, dir_separator_str, spec_version,
8089 accel_dir_suffix, dir_separator_str, NULL);
8090 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
8092 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true);
8093 /* Read the specs file unless it is a default one. */
8094 if (specs_file != 0 && strcmp (specs_file, "specs"))
8095 read_specs (specs_file, true, false);
8099 #ifdef ACCEL_COMPILER
8100 spec_machine_suffix = machine_suffix;
8102 spec_machine_suffix = just_machine_suffix;
8105 /* We need to check standard_exec_prefix/spec_machine_suffix/specs
8106 for any override of as, ld and libraries. */
8107 specs_file = (char *) alloca (strlen (standard_exec_prefix)
8108 + strlen (spec_machine_suffix) + sizeof ("specs"));
8109 strcpy (specs_file, standard_exec_prefix);
8110 strcat (specs_file, spec_machine_suffix);
8111 strcat (specs_file, "specs");
8112 if (access (specs_file, R_OK) == 0)
8113 read_specs (specs_file, true, false);
8115 /* Process any configure-time defaults specified for the command line
8116 options, via OPTION_DEFAULT_SPECS. */
8117 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
8118 do_option_spec (option_default_specs[i].name,
8119 option_default_specs[i].spec);
8121 /* Process DRIVER_SELF_SPECS, adding any new options to the end
8122 of the command line. */
8124 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
8125 do_self_spec (driver_self_specs[i]);
8127 /* If not cross-compiling, look for executables in the standard
8129 if (*cross_compile == '0')
8131 if (*md_exec_prefix)
8133 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
8134 PREFIX_PRIORITY_LAST, 0, 0);
8138 /* Process sysroot_suffix_spec. */
8139 if (*sysroot_suffix_spec != 0
8140 && !no_sysroot_suffix
8141 && do_spec_2 (sysroot_suffix_spec, NULL) == 0)
8143 if (argbuf.length () > 1)
8144 error ("spec failure: more than one argument to "
8145 "%<SYSROOT_SUFFIX_SPEC%>");
8146 else if (argbuf.length () == 1)
8147 target_sysroot_suffix = xstrdup (argbuf.last ());
8150 #ifdef HAVE_LD_SYSROOT
8151 /* Pass the --sysroot option to the linker, if it supports that. If
8152 there is a sysroot_suffix_spec, it has already been processed by
8153 this point, so target_system_root really is the system root we
8155 if (target_system_root)
8157 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
8158 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
8159 set_spec ("link", XOBFINISH (&obstack, const char *), false);
8163 /* Process sysroot_hdrs_suffix_spec. */
8164 if (*sysroot_hdrs_suffix_spec != 0
8165 && !no_sysroot_suffix
8166 && do_spec_2 (sysroot_hdrs_suffix_spec, NULL) == 0)
8168 if (argbuf.length () > 1)
8169 error ("spec failure: more than one argument "
8170 "to %<SYSROOT_HEADERS_SUFFIX_SPEC%>");
8171 else if (argbuf.length () == 1)
8172 target_sysroot_hdrs_suffix = xstrdup (argbuf.last ());
8175 /* Look for startfiles in the standard places. */
8176 if (*startfile_prefix_spec != 0
8177 && do_spec_2 (startfile_prefix_spec, NULL) == 0
8178 && do_spec_1 (" ", 0, NULL) == 0)
8182 FOR_EACH_VEC_ELT (argbuf, ndx, arg)
8183 add_sysrooted_prefix (&startfile_prefixes, arg, "BINUTILS",
8184 PREFIX_PRIORITY_LAST, 0, 1);
8186 /* We should eventually get rid of all these and stick to
8187 startfile_prefix_spec exclusively. */
8188 else if (*cross_compile == '0' || target_system_root)
8190 if (*md_startfile_prefix)
8191 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
8192 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
8194 if (*md_startfile_prefix_1)
8195 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
8196 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
8198 /* If standard_startfile_prefix is relative, base it on
8199 standard_exec_prefix. This lets us move the installed tree
8200 as a unit. If GCC_EXEC_PREFIX is defined, base
8201 standard_startfile_prefix on that as well.
8203 If the prefix is relative, only search it for native compilers;
8204 otherwise we will search a directory containing host libraries. */
8205 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
8206 add_sysrooted_prefix (&startfile_prefixes,
8207 standard_startfile_prefix, "BINUTILS",
8208 PREFIX_PRIORITY_LAST, 0, 1);
8209 else if (*cross_compile == '0')
8211 add_prefix (&startfile_prefixes,
8212 concat (gcc_exec_prefix
8213 ? gcc_exec_prefix : standard_exec_prefix,
8215 standard_startfile_prefix, NULL),
8216 NULL, PREFIX_PRIORITY_LAST, 0, 1);
8219 /* Sysrooted prefixes are relocated because target_system_root is
8220 also relocated by gcc_exec_prefix. */
8221 if (*standard_startfile_prefix_1)
8222 add_sysrooted_prefix (&startfile_prefixes,
8223 standard_startfile_prefix_1, "BINUTILS",
8224 PREFIX_PRIORITY_LAST, 0, 1);
8225 if (*standard_startfile_prefix_2)
8226 add_sysrooted_prefix (&startfile_prefixes,
8227 standard_startfile_prefix_2, "BINUTILS",
8228 PREFIX_PRIORITY_LAST, 0, 1);
8231 /* Process any user specified specs in the order given on the command
8233 for (struct user_specs *uptr = user_specs_head; uptr; uptr = uptr->next)
8235 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
8237 read_specs (filename ? filename : uptr->filename, false, true);
8240 /* Process any user self specs. */
8242 struct spec_list *sl;
8243 for (sl = specs; sl; sl = sl->next)
8244 if (sl->name_len == sizeof "self_spec" - 1
8245 && !strcmp (sl->name, "self_spec"))
8246 do_self_spec (*sl->ptr_spec);
8251 enum save_temps save;
8253 if (!compare_debug_second)
8255 n_switches_debug_check[1] = n_switches;
8256 n_switches_alloc_debug_check[1] = n_switches_alloc;
8257 switches_debug_check[1] = XDUPVEC (struct switchstr, switches,
8260 do_self_spec ("%:compare-debug-self-opt()");
8261 n_switches_debug_check[0] = n_switches;
8262 n_switches_alloc_debug_check[0] = n_switches_alloc;
8263 switches_debug_check[0] = switches;
8265 n_switches = n_switches_debug_check[1];
8266 n_switches_alloc = n_switches_alloc_debug_check[1];
8267 switches = switches_debug_check[1];
8270 /* Avoid crash when computing %j in this early. */
8271 save = save_temps_flag;
8272 save_temps_flag = SAVE_TEMPS_NONE;
8274 compare_debug = -compare_debug;
8275 do_self_spec ("%:compare-debug-self-opt()");
8277 save_temps_flag = save;
8279 if (!compare_debug_second)
8281 n_switches_debug_check[1] = n_switches;
8282 n_switches_alloc_debug_check[1] = n_switches_alloc;
8283 switches_debug_check[1] = switches;
8284 compare_debug = -compare_debug;
8285 n_switches = n_switches_debug_check[0];
8286 n_switches_alloc = n_switches_debug_check[0];
8287 switches = switches_debug_check[0];
8292 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
8293 if (gcc_exec_prefix)
8294 gcc_exec_prefix = concat (gcc_exec_prefix, spec_host_machine,
8295 dir_separator_str, spec_version,
8296 accel_dir_suffix, dir_separator_str, NULL);
8298 /* Now we have the specs.
8299 Set the `valid' bits for switches that match anything in any spec. */
8301 validate_all_switches ();
8303 /* Now that we have the switches and the specs, set
8304 the subdirectory based on the options. */
8305 set_multilib_dir ();
8308 /* Set up to remember the pathname of gcc and any options
8309 needed for collect. We use argv[0] instead of progname because
8310 we need the complete pathname. */
8313 driver::putenv_COLLECT_GCC (const char *argv0) const
8315 obstack_init (&collect_obstack);
8316 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
8317 obstack_grow (&collect_obstack, argv0, strlen (argv0) + 1);
8318 xputenv (XOBFINISH (&collect_obstack, char *));
8321 /* Set up to remember the pathname of the lto wrapper. */
8324 driver::maybe_putenv_COLLECT_LTO_WRAPPER () const
8326 char *lto_wrapper_file;
8329 lto_wrapper_file = NULL;
8331 lto_wrapper_file = find_a_file (&exec_prefixes, "lto-wrapper",
8333 if (lto_wrapper_file)
8335 lto_wrapper_file = convert_white_space (lto_wrapper_file);
8336 lto_wrapper_spec = lto_wrapper_file;
8337 obstack_init (&collect_obstack);
8338 obstack_grow (&collect_obstack, "COLLECT_LTO_WRAPPER=",
8339 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
8340 obstack_grow (&collect_obstack, lto_wrapper_spec,
8341 strlen (lto_wrapper_spec) + 1);
8342 xputenv (XOBFINISH (&collect_obstack, char *));
8347 /* Set up to remember the names of offload targets. */
8350 driver::maybe_putenv_OFFLOAD_TARGETS () const
8352 if (offload_targets && offload_targets[0] != '\0')
8354 obstack_grow (&collect_obstack, "OFFLOAD_TARGET_NAMES=",
8355 sizeof ("OFFLOAD_TARGET_NAMES=") - 1);
8356 obstack_grow (&collect_obstack, offload_targets,
8357 strlen (offload_targets) + 1);
8358 xputenv (XOBFINISH (&collect_obstack, char *));
8361 free (offload_targets);
8362 offload_targets = NULL;
8365 /* Reject switches that no pass was interested in. */
8368 driver::handle_unrecognized_options ()
8370 for (size_t i = 0; (int) i < n_switches; i++)
8371 if (! switches[i].validated)
8373 const char *hint = m_option_proposer.suggest_option (switches[i].part1);
8375 error ("unrecognized command-line option %<-%s%>;"
8376 " did you mean %<-%s%>?",
8377 switches[i].part1, hint);
8379 error ("unrecognized command-line option %<-%s%>",
8384 /* Handle the various -print-* options, returning 0 if the driver
8385 should exit, or nonzero if the driver should continue. */
8388 driver::maybe_print_and_exit () const
8390 if (print_search_dirs)
8392 printf (_("install: %s%s\n"),
8393 gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
8394 gcc_exec_prefix ? "" : machine_suffix);
8395 printf (_("programs: %s\n"),
8396 build_search_list (&exec_prefixes, "", false, false));
8397 printf (_("libraries: %s\n"),
8398 build_search_list (&startfile_prefixes, "", false, true));
8402 if (print_file_name)
8404 printf ("%s\n", find_file (print_file_name));
8408 if (print_prog_name)
8410 if (use_ld != NULL && ! strcmp (print_prog_name, "ld"))
8412 /* Append USE_LD to the default linker. */
8413 #ifdef DEFAULT_LINKER
8415 # ifdef HAVE_HOST_EXECUTABLE_SUFFIX
8416 int len = (sizeof (DEFAULT_LINKER)
8417 - sizeof (HOST_EXECUTABLE_SUFFIX));
8421 char *default_linker = xstrdup (DEFAULT_LINKER);
8422 /* Strip HOST_EXECUTABLE_SUFFIX if DEFAULT_LINKER contains
8423 HOST_EXECUTABLE_SUFFIX. */
8424 if (! strcmp (&default_linker[len], HOST_EXECUTABLE_SUFFIX))
8426 default_linker[len] = '\0';
8427 ld = concat (default_linker, use_ld,
8428 HOST_EXECUTABLE_SUFFIX, NULL);
8433 ld = concat (DEFAULT_LINKER, use_ld, NULL);
8434 if (access (ld, X_OK) == 0)
8436 printf ("%s\n", ld);
8440 print_prog_name = concat (print_prog_name, use_ld, NULL);
8442 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
8443 printf ("%s\n", (newname ? newname : print_prog_name));
8447 if (print_multi_lib)
8449 print_multilib_info ();
8453 if (print_multi_directory)
8455 if (multilib_dir == NULL)
8458 printf ("%s\n", multilib_dir);
8462 if (print_multiarch)
8464 if (multiarch_dir == NULL)
8467 printf ("%s\n", multiarch_dir);
8473 if (target_system_root)
8475 if (target_sysroot_suffix)
8476 printf ("%s%s\n", target_system_root, target_sysroot_suffix);
8478 printf ("%s\n", target_system_root);
8483 if (print_multi_os_directory)
8485 if (multilib_os_dir == NULL)
8488 printf ("%s\n", multilib_os_dir);
8492 if (print_sysroot_headers_suffix)
8494 if (*sysroot_hdrs_suffix_spec)
8496 printf("%s\n", (target_sysroot_hdrs_suffix
8497 ? target_sysroot_hdrs_suffix
8502 /* The error status indicates that only one set of fixed
8503 headers should be built. */
8504 fatal_error (input_location,
8505 "not configured with sysroot headers suffix");
8508 if (print_help_list)
8514 printf (_("\nFor bug reporting instructions, please see:\n"));
8515 printf ("%s.\n", bug_report_url);
8520 /* We do not exit here. Instead we have created a fake input file
8521 called 'help-dummy' which needs to be compiled, and we pass this
8522 on the various sub-processes, along with the --help switch.
8523 Ensure their output appears after ours. */
8524 fputc ('\n', stdout);
8530 printf (_("%s %s%s\n"), progname, pkgversion_string,
8532 printf ("Copyright %s 2020 Free Software Foundation, Inc.\n",
8534 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
8535 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
8540 /* We do not exit here. We use the same mechanism of --help to print
8541 the version of the sub-processes. */
8542 fputc ('\n', stdout);
8548 print_configuration (stderr);
8556 /* Figure out what to do with each input file.
8557 Return true if we need to exit early from "main", false otherwise. */
8560 driver::prepare_infiles ()
8563 int lang_n_infiles = 0;
8565 if (n_infiles == added_libraries)
8566 fatal_error (input_location, "no input files");
8569 /* Early exit needed from main. */
8572 /* Make a place to record the compiler output file names
8573 that correspond to the input files. */
8576 i += lang_specific_extra_outfiles;
8577 outfiles = XCNEWVEC (const char *, i);
8579 /* Record which files were specified explicitly as link input. */
8581 explicit_link_files = XCNEWVEC (char, n_infiles);
8583 combine_inputs = have_o || flag_wpa;
8585 for (i = 0; (int) i < n_infiles; i++)
8587 const char *name = infiles[i].name;
8588 struct compiler *compiler = lookup_compiler (name,
8590 infiles[i].language);
8592 if (compiler && !(compiler->combinable))
8593 combine_inputs = false;
8595 if (lang_n_infiles > 0 && compiler != input_file_compiler
8596 && infiles[i].language && infiles[i].language[0] != '*')
8597 infiles[i].incompiler = compiler;
8601 input_file_compiler = compiler;
8602 infiles[i].incompiler = compiler;
8606 /* Since there is no compiler for this input file, assume it is a
8608 explicit_link_files[i] = 1;
8609 infiles[i].incompiler = NULL;
8611 infiles[i].compiled = false;
8612 infiles[i].preprocessed = false;
8615 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1)
8616 fatal_error (input_location,
8617 "cannot specify %<-o%> with %<-c%>, %<-S%> or %<-E%> "
8618 "with multiple files");
8620 /* No early exit needed from main; we can continue. */
8624 /* Run the spec machinery on each input file. */
8627 driver::do_spec_on_infiles () const
8631 for (i = 0; (int) i < n_infiles; i++)
8633 int this_file_error = 0;
8635 /* Tell do_spec what to substitute for %i. */
8637 input_file_number = i;
8638 set_input (infiles[i].name);
8640 if (infiles[i].compiled)
8643 /* Use the same thing in %o, unless cp->spec says otherwise. */
8645 outfiles[i] = gcc_input_filename;
8647 /* Figure out which compiler from the file's suffix. */
8650 = lookup_compiler (infiles[i].name, input_filename_length,
8651 infiles[i].language);
8653 if (input_file_compiler)
8655 /* Ok, we found an applicable compiler. Run its spec. */
8657 if (input_file_compiler->spec[0] == '#')
8659 error ("%s: %s compiler not installed on this system",
8660 gcc_input_filename, &input_file_compiler->spec[1]);
8661 this_file_error = 1;
8669 free (debug_check_temp_file[0]);
8670 debug_check_temp_file[0] = NULL;
8672 free (debug_check_temp_file[1]);
8673 debug_check_temp_file[1] = NULL;
8676 value = do_spec (input_file_compiler->spec);
8677 infiles[i].compiled = true;
8679 this_file_error = 1;
8680 else if (compare_debug && debug_check_temp_file[0])
8683 inform (UNKNOWN_LOCATION,
8684 "recompiling with %<-fcompare-debug%>");
8686 compare_debug = -compare_debug;
8687 n_switches = n_switches_debug_check[1];
8688 n_switches_alloc = n_switches_alloc_debug_check[1];
8689 switches = switches_debug_check[1];
8691 value = do_spec (input_file_compiler->spec);
8693 compare_debug = -compare_debug;
8694 n_switches = n_switches_debug_check[0];
8695 n_switches_alloc = n_switches_alloc_debug_check[0];
8696 switches = switches_debug_check[0];
8700 error ("during %<-fcompare-debug%> recompilation");
8701 this_file_error = 1;
8704 gcc_assert (debug_check_temp_file[1]
8705 && filename_cmp (debug_check_temp_file[0],
8706 debug_check_temp_file[1]));
8709 inform (UNKNOWN_LOCATION, "comparing final insns dumps");
8711 if (compare_files (debug_check_temp_file))
8712 this_file_error = 1;
8717 free (debug_check_temp_file[0]);
8718 debug_check_temp_file[0] = NULL;
8720 free (debug_check_temp_file[1]);
8721 debug_check_temp_file[1] = NULL;
8726 /* If this file's name does not contain a recognized suffix,
8727 record it as explicit linker input. */
8730 explicit_link_files[i] = 1;
8732 /* Clear the delete-on-failure queue, deleting the files in it
8733 if this compilation failed. */
8735 if (this_file_error)
8737 delete_failure_queue ();
8740 /* If this compilation succeeded, don't delete those files later. */
8741 clear_failure_queue ();
8744 /* Reset the input file name to the first compile/object file name, for use
8745 with %b in LINK_SPEC. We use the first input file that we can find
8746 a compiler to compile it instead of using infiles.language since for
8747 languages other than C we use aliases that we then lookup later. */
8752 for (i = 0; i < n_infiles ; i++)
8753 if (infiles[i].incompiler
8754 || (infiles[i].language && infiles[i].language[0] != '*'))
8756 set_input (infiles[i].name);
8763 /* Make sure INPUT_FILE_NUMBER points to first available open
8765 input_file_number = n_infiles;
8766 if (lang_specific_pre_link ())
8771 /* If we have to run the linker, do it now. */
8774 driver::maybe_run_linker (const char *argv0) const
8777 int linker_was_run = 0;
8778 int num_linker_inputs;
8780 /* Determine if there are any linker input files. */
8781 num_linker_inputs = 0;
8782 for (i = 0; (int) i < n_infiles; i++)
8783 if (explicit_link_files[i] || outfiles[i] != NULL)
8784 num_linker_inputs++;
8786 /* Arrange for temporary file names created during linking to take
8787 on names related with the linker output rather than with the
8788 inputs when appropriate. */
8789 if (outbase && *outbase)
8793 char *tofree = dumpdir;
8794 gcc_checking_assert (strlen (dumpdir) == dumpdir_length);
8795 dumpdir = concat (dumpdir, outbase, ".", NULL);
8799 dumpdir = concat (outbase, ".", NULL);
8800 dumpdir_length += strlen (outbase) + 1;
8801 dumpdir_trailing_dash_added = true;
8803 else if (dumpdir_trailing_dash_added)
8805 gcc_assert (dumpdir[dumpdir_length - 1] == '-');
8806 dumpdir[dumpdir_length - 1] = '.';
8809 if (dumpdir_trailing_dash_added)
8811 gcc_assert (dumpdir_length > 0);
8812 gcc_assert (dumpdir[dumpdir_length - 1] == '.');
8817 input_basename = outbase = NULL;
8818 outbase_length = suffixed_basename_length = basename_length = 0;
8820 /* Run ld to link all the compiler output files. */
8822 if (num_linker_inputs > 0 && !seen_error () && print_subprocess_help < 2)
8824 int tmp = execution_count;
8826 detect_jobserver ();
8830 #if HAVE_LTO_PLUGIN > 0
8831 #if HAVE_LTO_PLUGIN == 2
8832 const char *fno_use_linker_plugin = "fno-use-linker-plugin";
8834 const char *fuse_linker_plugin = "fuse-linker-plugin";
8838 /* We'll use ld if we can't find collect2. */
8839 if (! strcmp (linker_name_spec, "collect2"))
8841 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false);
8843 linker_name_spec = "ld";
8846 #if HAVE_LTO_PLUGIN > 0
8847 #if HAVE_LTO_PLUGIN == 2
8848 if (!switch_matches (fno_use_linker_plugin,
8849 fno_use_linker_plugin
8850 + strlen (fno_use_linker_plugin), 0))
8852 if (switch_matches (fuse_linker_plugin,
8854 + strlen (fuse_linker_plugin), 0))
8857 char *temp_spec = find_a_file (&exec_prefixes,
8858 LTOPLUGINSONAME, R_OK,
8861 fatal_error (input_location,
8862 "%<-fuse-linker-plugin%>, but %s not found",
8864 linker_plugin_file_spec = convert_white_space (temp_spec);
8867 lto_gcc_spec = argv0;
8870 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
8872 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false);
8873 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true);
8875 if (print_subprocess_help == 1)
8877 printf (_("\nLinker options\n==============\n\n"));
8878 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
8879 " to the linker.\n\n"));
8882 int value = do_spec (link_command_spec);
8885 linker_was_run = (tmp != execution_count);
8888 /* If options said don't run linker,
8889 complain about input files to be given to the linker. */
8891 if (! linker_was_run && !seen_error ())
8892 for (i = 0; (int) i < n_infiles; i++)
8893 if (explicit_link_files[i]
8894 && !(infiles[i].language && infiles[i].language[0] == '*'))
8895 warning (0, "%s: linker input file unused because linking not done",
8899 /* The end of "main". */
8902 driver::final_actions () const
8904 /* Delete some or all of the temporary files we made. */
8907 delete_failure_queue ();
8908 delete_temp_files ();
8910 if (print_help_list)
8912 printf (("\nFor bug reporting instructions, please see:\n"));
8913 printf ("%s\n", bug_report_url);
8917 /* Detect whether jobserver is active and working. If not drop
8918 --jobserver-auth from MAKEFLAGS. */
8921 driver::detect_jobserver () const
8923 /* Detect jobserver and drop it if it's not working. */
8924 const char *makeflags = env.get ("MAKEFLAGS");
8925 if (makeflags != NULL)
8927 const char *needle = "--jobserver-auth=";
8928 const char *n = strstr (makeflags, needle);
8935 = (sscanf (n + strlen (needle), "%d,%d", &rfd, &wfd) == 2
8938 && is_valid_fd (rfd)
8939 && is_valid_fd (wfd));
8941 /* Drop the jobserver if it's not working now. */
8944 unsigned offset = n - makeflags;
8945 char *dup = xstrdup (makeflags);
8948 const char *space = strchr (makeflags + offset, ' ');
8950 strcpy (dup + offset, space);
8951 xputenv (concat ("MAKEFLAGS=", dup, NULL));
8957 /* Determine what the exit code of the driver should be. */
8960 driver::get_exit_code () const
8962 return (signal_count != 0 ? 2
8963 : seen_error () ? (pass_exit_codes ? greatest_status : 1)
8967 /* Find the proper compilation spec for the file name NAME,
8968 whose length is LENGTH. LANGUAGE is the specified language,
8969 or 0 if this file is to be passed to the linker. */
8971 static struct compiler *
8972 lookup_compiler (const char *name, size_t length, const char *language)
8974 struct compiler *cp;
8976 /* If this was specified by the user to be a linker input, indicate that. */
8977 if (language != 0 && language[0] == '*')
8980 /* Otherwise, look for the language, if one is spec'd. */
8983 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
8984 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
8986 if (name != NULL && strcmp (name, "-") == 0
8987 && (strcmp (cp->suffix, "@c-header") == 0
8988 || strcmp (cp->suffix, "@c++-header") == 0)
8990 fatal_error (input_location,
8991 "cannot use %<-%> as input filename for a "
8992 "precompiled header");
8997 error ("language %s not recognized", language);
9001 /* Look for a suffix. */
9002 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
9004 if (/* The suffix `-' matches only the file name `-'. */
9005 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
9006 || (strlen (cp->suffix) < length
9007 /* See if the suffix matches the end of NAME. */
9008 && !strcmp (cp->suffix,
9009 name + length - strlen (cp->suffix))
9014 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
9015 /* Look again, but case-insensitively this time. */
9017 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
9019 if (/* The suffix `-' matches only the file name `-'. */
9020 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
9021 || (strlen (cp->suffix) < length
9022 /* See if the suffix matches the end of NAME. */
9023 && ((!strcmp (cp->suffix,
9024 name + length - strlen (cp->suffix))
9025 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
9026 && !strcasecmp (cp->suffix,
9027 name + length - strlen (cp->suffix)))
9033 if (cp >= compilers)
9035 if (cp->spec[0] != '@')
9036 /* A non-alias entry: return it. */
9039 /* An alias entry maps a suffix to a language.
9040 Search for the language; pass 0 for NAME and LENGTH
9041 to avoid infinite recursion if language not found. */
9042 return lookup_compiler (NULL, 0, cp->spec + 1);
9048 save_string (const char *s, int len)
9050 char *result = XNEWVEC (char, len + 1);
9052 gcc_checking_assert (strlen (s) >= (unsigned int) len);
9053 memcpy (result, s, len);
9060 validate_switches_from_spec (const char *spec, bool user)
9062 const char *p = spec;
9068 || (*p == 'W' && *++p == '{')
9069 || (*p == '@' && *++p == '{')))
9070 /* We have a switch spec. */
9071 p = validate_switches (p + 1, user, *p == '{');
9075 validate_all_switches (void)
9077 struct compiler *comp;
9078 struct spec_list *spec;
9080 for (comp = compilers; comp->spec; comp++)
9081 validate_switches_from_spec (comp->spec, false);
9083 /* Look through the linked list of specs read from the specs file. */
9084 for (spec = specs; spec; spec = spec->next)
9085 validate_switches_from_spec (*spec->ptr_spec, spec->user_p);
9087 validate_switches_from_spec (link_command_spec, false);
9090 /* Look at the switch-name that comes after START and mark as valid
9091 all supplied switches that match it. If BRACED, handle other
9092 switches after '|' and '&', and specs after ':' until ';' or '}',
9093 going back for more switches after ';'. Without BRACED, handle
9094 only one atom. Return a pointer to whatever follows the handled
9095 items, after the closing brace if BRACED. */
9098 validate_switches (const char *start, bool user_spec, bool braced)
9100 const char *p = start;
9104 bool suffix = false;
9105 bool starred = false;
9107 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
9116 if (*p == '.' || *p == ',')
9120 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
9121 || *p == ',' || *p == '.' || *p == '@')
9126 starred = true, p++;
9132 /* Mark all matching switches as valid. */
9133 for (i = 0; i < n_switches; i++)
9134 if (!strncmp (switches[i].part1, atom, len)
9135 && (starred || switches[i].part1[len] == '\0')
9136 && (switches[i].known || user_spec))
9137 switches[i].validated = true;
9144 if (*p && (p[-1] == '|' || p[-1] == '&'))
9147 if (*p && p[-1] == ':')
9149 while (*p && *p != ';' && *p != '}')
9154 if (*p == '{' || *p == '<')
9155 p = validate_switches (p+1, user_spec, *p == '{');
9156 else if (p[0] == 'W' && p[1] == '{')
9157 p = validate_switches (p+2, user_spec, true);
9158 else if (p[0] == '@' && p[1] == '{')
9159 p = validate_switches (p+2, user_spec, true);
9166 if (*p && p[-1] == ';')
9180 static struct mdswitchstr *mdswitches;
9181 static int n_mdswitches;
9183 /* Check whether a particular argument was used. The first time we
9184 canonicalize the switches to keep only the ones we care about. */
9189 int operator () (const char *p, int len);
9196 const char *replace;
9201 mswitchstr *mswitches;
9206 used_arg_t used_arg;
9209 used_arg_t::operator () (const char *p, int len)
9215 struct mswitchstr *matches;
9219 /* Break multilib_matches into the component strings of string
9220 and replacement string. */
9221 for (q = multilib_matches; *q != '\0'; q++)
9226 = (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
9228 q = multilib_matches;
9237 fatal_error (input_location, "multilib spec %qs is invalid",
9242 matches[i].len = q - matches[i].str;
9244 matches[i].replace = ++q;
9245 while (*q != ';' && *q != '\0')
9248 goto invalid_matches;
9251 matches[i].rep_len = q - matches[i].replace;
9257 /* Now build a list of the replacement string for switches that we care
9258 about. Make sure we allocate at least one entry. This prevents
9259 xmalloc from calling fatal, and prevents us from re-executing this
9262 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1));
9263 for (i = 0; i < n_switches; i++)
9264 if ((switches[i].live_cond & SWITCH_IGNORE) == 0)
9266 int xlen = strlen (switches[i].part1);
9267 for (j = 0; j < cnt; j++)
9268 if (xlen == matches[j].len
9269 && ! strncmp (switches[i].part1, matches[j].str, xlen))
9271 mswitches[n_mswitches].str = matches[j].replace;
9272 mswitches[n_mswitches].len = matches[j].rep_len;
9273 mswitches[n_mswitches].replace = (char *) 0;
9274 mswitches[n_mswitches].rep_len = 0;
9280 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
9281 on the command line nor any options mutually incompatible with
9283 for (i = 0; i < n_mdswitches; i++)
9287 for (q = multilib_options; *q != '\0'; *q && q++)
9293 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
9294 || strchr (" /", q[mdswitches[i].len]) == NULL)
9296 while (*q != ' ' && *q != '/' && *q != '\0')
9303 if (*q != ' ' && *q != '\0')
9305 while (*r != ' ' && *r != '\0')
9308 while (*q != ' ' && *q != '/' && *q != '\0')
9311 if (used_arg (r, q - r))
9316 mswitches[n_mswitches].str = mdswitches[i].str;
9317 mswitches[n_mswitches].len = mdswitches[i].len;
9318 mswitches[n_mswitches].replace = (char *) 0;
9319 mswitches[n_mswitches].rep_len = 0;
9332 for (i = 0; i < n_mswitches; i++)
9333 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
9339 void used_arg_t::finalize ()
9341 XDELETEVEC (mswitches);
9348 default_arg (const char *p, int len)
9352 for (i = 0; i < n_mdswitches; i++)
9353 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
9359 /* Work out the subdirectory to use based on the options. The format of
9360 multilib_select is a list of elements. Each element is a subdirectory
9361 name followed by a list of options followed by a semicolon. The format
9362 of multilib_exclusions is the same, but without the preceding
9363 directory. First gcc will check the exclusions, if none of the options
9364 beginning with an exclamation point are present, and all of the other
9365 options are present, then we will ignore this completely. Passing
9366 that, gcc will consider each multilib_select in turn using the same
9367 rules for matching the options. If a match is found, that subdirectory
9369 A subdirectory name is optionally followed by a colon and the corresponding
9373 set_multilib_dir (void)
9376 unsigned int this_path_len;
9377 const char *this_path, *this_arg;
9378 const char *start, *end;
9380 int ok, ndfltok, first;
9383 start = multilib_defaults;
9384 while (*start == ' ' || *start == '\t')
9386 while (*start != '\0')
9389 while (*start != ' ' && *start != '\t' && *start != '\0')
9391 while (*start == ' ' || *start == '\t')
9399 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches);
9400 for (start = multilib_defaults; *start != '\0'; start = end + 1)
9402 while (*start == ' ' || *start == '\t')
9408 for (end = start + 1;
9409 *end != ' ' && *end != '\t' && *end != '\0'; end++)
9412 obstack_grow (&multilib_obstack, start, end - start);
9413 obstack_1grow (&multilib_obstack, 0);
9414 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *);
9415 mdswitches[i++].len = end - start;
9422 p = multilib_exclusions;
9425 /* Ignore newlines. */
9432 /* Check the arguments. */
9439 fatal_error (input_location, "multilib exclusions %qs is invalid",
9440 multilib_exclusions);
9450 while (*p != ' ' && *p != ';')
9453 goto invalid_exclusions;
9457 if (*this_arg != '!')
9465 ok = used_arg (this_arg, p - this_arg);
9480 p = multilib_select;
9482 /* Append multilib reuse rules if any. With those rules, we can reuse
9483 one multilib for certain different options sets. */
9484 if (strlen (multilib_reuse) > 0)
9485 p = concat (p, multilib_reuse, NULL);
9489 /* Ignore newlines. */
9496 /* Get the initial path. */
9503 fatal_error (input_location, "multilib select %qs %qs is invalid",
9504 multilib_select, multilib_reuse);
9508 this_path_len = p - this_path;
9510 /* Check the arguments. */
9517 goto invalid_select;
9526 while (*p != ' ' && *p != ';')
9529 goto invalid_select;
9533 if (*this_arg != '!')
9541 /* If this is a default argument, we can just ignore it.
9542 This is true even if this_arg begins with '!'. Beginning
9543 with '!' does not mean that this argument is necessarily
9544 inappropriate for this library: it merely means that
9545 there is a more specific library which uses this
9546 argument. If this argument is a default, we need not
9547 consider that more specific library. */
9548 ok = used_arg (this_arg, p - this_arg);
9555 if (default_arg (this_arg, p - this_arg))
9564 if (this_path_len != 1
9565 || this_path[0] != '.')
9567 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1);
9570 strncpy (new_multilib_dir, this_path, this_path_len);
9571 new_multilib_dir[this_path_len] = '\0';
9572 q = strchr (new_multilib_dir, ':');
9575 multilib_dir = new_multilib_dir;
9582 const char *q = this_path, *end = this_path + this_path_len;
9584 while (q < end && *q != ':')
9588 const char *q2 = q + 1, *ml_end = end;
9589 char *new_multilib_os_dir;
9591 while (q2 < end && *q2 != ':')
9595 if (ml_end - q == 1)
9596 multilib_os_dir = xstrdup (".");
9599 new_multilib_os_dir = XNEWVEC (char, ml_end - q);
9600 memcpy (new_multilib_os_dir, q + 1, ml_end - q - 1);
9601 new_multilib_os_dir[ml_end - q - 1] = '\0';
9602 multilib_os_dir = new_multilib_os_dir;
9605 if (q2 < end && *q2 == ':')
9607 char *new_multiarch_dir = XNEWVEC (char, end - q2);
9608 memcpy (new_multiarch_dir, q2 + 1, end - q2 - 1);
9609 new_multiarch_dir[end - q2 - 1] = '\0';
9610 multiarch_dir = new_multiarch_dir;
9619 if (multilib_dir == NULL && multilib_os_dir != NULL
9620 && strcmp (multilib_os_dir, ".") == 0)
9622 free (CONST_CAST (char *, multilib_os_dir));
9623 multilib_os_dir = NULL;
9625 else if (multilib_dir != NULL && multilib_os_dir == NULL)
9626 multilib_os_dir = multilib_dir;
9629 /* Print out the multiple library subdirectory selection
9630 information. This prints out a series of lines. Each line looks
9631 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
9632 required. Only the desired options are printed out, the negative
9633 matches. The options are print without a leading dash. There are
9634 no spaces to make it easy to use the information in the shell.
9635 Each subdirectory is printed only once. This assumes the ordering
9636 generated by the genmultilib script. Also, we leave out ones that match
9640 print_multilib_info (void)
9642 const char *p = multilib_select;
9643 const char *last_path = 0, *this_path;
9645 unsigned int last_path_len = 0;
9650 /* Ignore newlines. */
9657 /* Get the initial path. */
9664 fatal_error (input_location,
9665 "multilib select %qs is invalid", multilib_select);
9671 /* When --disable-multilib was used but target defines
9672 MULTILIB_OSDIRNAMES, entries starting with .: (and not starting
9673 with .:: for multiarch configurations) are there just to find
9674 multilib_os_dir, so skip them from output. */
9675 if (this_path[0] == '.' && this_path[1] == ':' && this_path[2] != ':')
9678 /* Check for matches with the multilib_exclusions. We don't bother
9679 with the '!' in either list. If any of the exclusion rules match
9680 all of its options with the select rule, we skip it. */
9682 const char *e = multilib_exclusions;
9683 const char *this_arg;
9688 /* Ignore newlines. */
9695 /* Check the arguments. */
9704 fatal_error (input_location,
9705 "multilib exclusion %qs is invalid",
9706 multilib_exclusions);
9717 while (*e != ' ' && *e != ';')
9720 goto invalid_exclusion;
9728 int len = e - this_arg;
9731 goto invalid_select;
9735 while (*q != ' ' && *q != ';')
9738 goto invalid_select;
9742 if (! strncmp (arg, this_arg,
9743 (len < q - arg) ? q - arg : len)
9744 || default_arg (this_arg, e - this_arg))
9774 /* If this is a duplicate, skip it. */
9775 skip = (last_path != 0
9776 && (unsigned int) (p - this_path) == last_path_len
9777 && ! filename_ncmp (last_path, this_path, last_path_len));
9779 last_path = this_path;
9780 last_path_len = p - this_path;
9783 /* If this directory requires any default arguments, we can skip
9784 it. We will already have printed a directory identical to
9785 this one which does not require that default argument. */
9796 goto invalid_select;
9803 while (*q != ' ' && *q != ';')
9806 goto invalid_select;
9811 && default_arg (arg, q - arg))
9826 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
9837 goto invalid_select;
9845 use_arg = *p != '!';
9850 while (*p != ' ' && *p != ';')
9853 goto invalid_select;
9865 /* If there are extra options, print them now. */
9866 if (multilib_extra && *multilib_extra)
9868 int print_at = TRUE;
9871 for (q = multilib_extra; *q != '\0'; q++)
9892 /* getenv built-in spec function.
9894 Returns the value of the environment variable given by its first argument,
9895 concatenated with the second argument. If the variable is not defined, a
9896 fatal error is issued unless such undefs are internally allowed, in which
9897 case the variable name prefixed by a '/' is used as the variable value.
9899 The leading '/' allows using the result at a spot where a full path would
9900 normally be expected and when the actual value doesn't really matter since
9901 undef vars are allowed. */
9904 getenv_spec_function (int argc, const char **argv)
9907 const char *varname;
9917 value = env.get (varname);
9919 /* If the variable isn't defined and this is allowed, craft our expected
9920 return value. Assume variable names used in specs strings don't contain
9921 any active spec character so don't need escaping. */
9922 if (!value && spec_undefvar_allowed)
9924 result = XNEWVAR (char, strlen(varname) + 2);
9925 sprintf (result, "/%s", varname);
9930 fatal_error (input_location,
9931 "environment variable %qs not defined", varname);
9933 /* We have to escape every character of the environment variable so
9934 they are not interpreted as active spec characters. A
9935 particularly painful case is when we are reading a variable
9936 holding a windows path complete with \ separators. */
9937 len = strlen (value) * 2 + strlen (argv[1]) + 1;
9938 result = XNEWVAR (char, len);
9939 for (ptr = result; *value; ptr += 2)
9945 strcpy (ptr, argv[1]);
9950 /* if-exists built-in spec function.
9952 Checks to see if the file specified by the absolute pathname in
9953 ARGS exists. Returns that pathname if found.
9955 The usual use for this function is to check for a library file
9956 (whose name has been expanded with %s). */
9959 if_exists_spec_function (int argc, const char **argv)
9961 /* Must have only one argument. */
9962 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
9968 /* if-exists-else built-in spec function.
9970 This is like if-exists, but takes an additional argument which
9971 is returned if the first argument does not exist. */
9974 if_exists_else_spec_function (int argc, const char **argv)
9976 /* Must have exactly two arguments. */
9980 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
9986 /* sanitize built-in spec function.
9988 This returns non-NULL, if sanitizing address, thread or
9989 any of the undefined behavior sanitizers. */
9992 sanitize_spec_function (int argc, const char **argv)
9997 if (strcmp (argv[0], "address") == 0)
9998 return (flag_sanitize & SANITIZE_USER_ADDRESS) ? "" : NULL;
9999 if (strcmp (argv[0], "kernel-address") == 0)
10000 return (flag_sanitize & SANITIZE_KERNEL_ADDRESS) ? "" : NULL;
10001 if (strcmp (argv[0], "thread") == 0)
10002 return (flag_sanitize & SANITIZE_THREAD) ? "" : NULL;
10003 if (strcmp (argv[0], "undefined") == 0)
10004 return ((flag_sanitize
10005 & (SANITIZE_UNDEFINED | SANITIZE_UNDEFINED_NONDEFAULT))
10006 && !flag_sanitize_undefined_trap_on_error) ? "" : NULL;
10007 if (strcmp (argv[0], "leak") == 0)
10008 return ((flag_sanitize
10009 & (SANITIZE_ADDRESS | SANITIZE_LEAK | SANITIZE_THREAD))
10010 == SANITIZE_LEAK) ? "" : NULL;
10014 /* replace-outfile built-in spec function.
10016 This looks for the first argument in the outfiles array's name and
10017 replaces it with the second argument. */
10019 static const char *
10020 replace_outfile_spec_function (int argc, const char **argv)
10023 /* Must have exactly two arguments. */
10027 for (i = 0; i < n_infiles; i++)
10029 if (outfiles[i] && !filename_cmp (outfiles[i], argv[0]))
10030 outfiles[i] = xstrdup (argv[1]);
10035 /* remove-outfile built-in spec function.
10037 * This looks for the first argument in the outfiles array's name and
10040 static const char *
10041 remove_outfile_spec_function (int argc, const char **argv)
10044 /* Must have exactly one argument. */
10048 for (i = 0; i < n_infiles; i++)
10050 if (outfiles[i] && !filename_cmp (outfiles[i], argv[0]))
10051 outfiles[i] = NULL;
10056 /* Given two version numbers, compares the two numbers.
10057 A version number must match the regular expression
10058 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
10061 compare_version_strings (const char *v1, const char *v2)
10066 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
10067 REG_EXTENDED | REG_NOSUB) != 0)
10069 rresult = regexec (&r, v1, 0, NULL, 0);
10070 if (rresult == REG_NOMATCH)
10071 fatal_error (input_location, "invalid version number %qs", v1);
10072 else if (rresult != 0)
10074 rresult = regexec (&r, v2, 0, NULL, 0);
10075 if (rresult == REG_NOMATCH)
10076 fatal_error (input_location, "invalid version number %qs", v2);
10077 else if (rresult != 0)
10080 return strverscmp (v1, v2);
10084 /* version_compare built-in spec function.
10086 This takes an argument of the following form:
10088 <comparison-op> <arg1> [<arg2>] <switch> <result>
10090 and produces "result" if the comparison evaluates to true,
10091 and nothing if it doesn't.
10093 The supported <comparison-op> values are:
10095 >= true if switch is a later (or same) version than arg1
10097 < true if switch is an earlier version than arg1
10099 >< true if switch is arg1 or later, and earlier than arg2
10100 <> true if switch is earlier than arg1 or is arg2 or later
10102 If the switch is not present, the condition is false unless
10103 the first character of the <comparison-op> is '!'.
10106 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
10107 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
10109 static const char *
10110 version_compare_spec_function (int argc, const char **argv)
10114 const char *switch_value = NULL;
10119 fatal_error (input_location, "too few arguments to %%:version-compare");
10120 if (argv[0][0] == '\0')
10122 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!')
10124 if (argc != nargs + 3)
10125 fatal_error (input_location, "too many arguments to %%:version-compare");
10127 switch_len = strlen (argv[nargs + 1]);
10128 for (i = 0; i < n_switches; i++)
10129 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len)
10130 && check_live_switch (i, switch_len))
10131 switch_value = switches[i].part1 + switch_len;
10133 if (switch_value == NULL)
10134 comp1 = comp2 = -1;
10137 comp1 = compare_version_strings (switch_value, argv[1]);
10139 comp2 = compare_version_strings (switch_value, argv[2]);
10141 comp2 = -1; /* This value unused. */
10144 switch (argv[0][0] << 8 | argv[0][1])
10146 case '>' << 8 | '=':
10147 result = comp1 >= 0;
10149 case '!' << 8 | '<':
10150 result = comp1 >= 0 || switch_value == NULL;
10153 result = comp1 < 0;
10155 case '!' << 8 | '>':
10156 result = comp1 < 0 || switch_value == NULL;
10158 case '>' << 8 | '<':
10159 result = comp1 >= 0 && comp2 < 0;
10161 case '<' << 8 | '>':
10162 result = comp1 < 0 || comp2 >= 0;
10166 fatal_error (input_location,
10167 "unknown operator %qs in %%:version-compare", argv[0]);
10172 return argv[nargs + 2];
10175 /* %:include builtin spec function. This differs from %include in that it
10176 can be nested inside a spec, and thus be conditionalized. It takes
10177 one argument, the filename, and looks for it in the startfile path.
10178 The result is always NULL, i.e. an empty expansion. */
10180 static const char *
10181 include_spec_function (int argc, const char **argv)
10188 file = find_a_file (&startfile_prefixes, argv[0], R_OK, true);
10189 read_specs (file ? file : argv[0], false, false);
10194 /* %:find-file spec function. This function replaces its argument by
10195 the file found through find_file, that is the -print-file-name gcc
10197 static const char *
10198 find_file_spec_function (int argc, const char **argv)
10205 file = find_file (argv[0]);
10210 /* %:find-plugindir spec function. This function replaces its argument
10211 by the -iplugindir=<dir> option. `dir' is found through find_file, that
10212 is the -print-file-name gcc program option. */
10213 static const char *
10214 find_plugindir_spec_function (int argc, const char **argv ATTRIBUTE_UNUSED)
10216 const char *option;
10221 option = concat ("-iplugindir=", find_file ("plugin"), NULL);
10226 /* %:print-asm-header spec function. Print a banner to say that the
10227 following output is from the assembler. */
10229 static const char *
10230 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED,
10231 const char **argv ATTRIBUTE_UNUSED)
10233 printf (_("Assembler options\n=================\n\n"));
10234 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
10239 /* Get a random number for -frandom-seed */
10241 static unsigned HOST_WIDE_INT
10242 get_random_number (void)
10244 unsigned HOST_WIDE_INT ret = 0;
10247 fd = open ("/dev/urandom", O_RDONLY);
10250 read (fd, &ret, sizeof (HOST_WIDE_INT));
10256 /* Get some more or less random data. */
10257 #ifdef HAVE_GETTIMEOFDAY
10261 gettimeofday (&tv, NULL);
10262 ret = tv.tv_sec * 1000 + tv.tv_usec / 1000;
10266 time_t now = time (NULL);
10268 if (now != (time_t)-1)
10269 ret = (unsigned) now;
10273 return ret ^ getpid ();
10276 /* %:compare-debug-dump-opt spec function. Save the last argument,
10277 expected to be the last -fdump-final-insns option, or generate a
10280 static const char *
10281 compare_debug_dump_opt_spec_function (int arg,
10282 const char **argv ATTRIBUTE_UNUSED)
10287 static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3];
10290 fatal_error (input_location,
10291 "too many arguments to %%:compare-debug-dump-opt");
10293 do_spec_2 ("%{fdump-final-insns=*:%*}", NULL);
10294 do_spec_1 (" ", 0, NULL);
10296 if (argbuf.length () > 0
10297 && strcmp (argv[argbuf.length () - 1], ".") != 0)
10299 if (!compare_debug)
10302 name = xstrdup (argv[argbuf.length () - 1]);
10307 if (argbuf.length () > 0)
10308 do_spec_2 ("%B.gkd", NULL);
10309 else if (!compare_debug)
10312 do_spec_2 ("%{!save-temps*:%g.gkd}%{save-temps*:%B.gkd}", NULL);
10314 do_spec_1 (" ", 0, NULL);
10316 gcc_assert (argbuf.length () > 0);
10318 name = xstrdup (argbuf.last ());
10320 char *arg = quote_spec (xstrdup (name));
10321 ret = concat ("-fdump-final-insns=", arg, NULL);
10325 which = compare_debug < 0;
10326 debug_check_temp_file[which] = name;
10330 unsigned HOST_WIDE_INT value = get_random_number ();
10332 sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value);
10338 ret = concat ("%{!frandom-seed=*:-frandom-seed=", random_seed, "} ",
10349 /* %:compare-debug-self-opt spec function. Expands to the options
10350 that are to be passed in the second compilation of
10353 static const char *
10354 compare_debug_self_opt_spec_function (int arg,
10355 const char **argv ATTRIBUTE_UNUSED)
10358 fatal_error (input_location,
10359 "too many arguments to %%:compare-debug-self-opt");
10361 if (compare_debug >= 0)
10365 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
10366 %<fdump-final-insns=* -w -S -o %j \
10367 %{!fcompare-debug-second:-fcompare-debug-second} \
10368 ", compare_debug_opt, NULL);
10371 /* %:pass-through-libs spec function. Finds all -l options and input
10372 file names in the lib spec passed to it, and makes a list of them
10373 prepended with the plugin option to cause them to be passed through
10374 to the final link after all the new object files have been added. */
10377 pass_through_libs_spec_func (int argc, const char **argv)
10379 char *prepended = xstrdup (" ");
10381 /* Shlemiel the painter's algorithm. Innately horrible, but at least
10382 we know that there will never be more than a handful of strings to
10383 concat, and it's only once per run, so it's not worth optimising. */
10384 for (n = 0; n < argc; n++)
10386 char *old = prepended;
10387 /* Anything that isn't an option is a full path to an output
10388 file; pass it through if it ends in '.a'. Among options,
10390 if (argv[n][0] == '-' && argv[n][1] == 'l')
10392 const char *lopt = argv[n] + 2;
10393 /* Handle both joined and non-joined -l options. If for any
10394 reason there's a trailing -l with no joined or following
10395 arg just discard it. */
10396 if (!*lopt && ++n >= argc)
10400 prepended = concat (prepended, "-plugin-opt=-pass-through=-l",
10403 else if (!strcmp (".a", argv[n] + strlen (argv[n]) - 2))
10405 prepended = concat (prepended, "-plugin-opt=-pass-through=",
10406 argv[n], " ", NULL);
10408 if (prepended != old)
10415 not_actual_file_p (const char *name)
10417 return (strcmp (name, "-") == 0
10418 || strcmp (output_file, HOST_BIT_BUCKET) == 0);
10421 /* %:dumps spec function. Take an optional argument that overrides
10422 the default extension for -dumpbase and -dumpbase-ext.
10423 Return -dumpdir, -dumpbase and -dumpbase-ext, if needed. */
10425 dumps_spec_func (int argc, const char **argv ATTRIBUTE_UNUSED)
10427 const char *ext = dumpbase_ext;
10430 char *args[3] = { NULL, NULL, NULL };
10433 /* Do not compute a default for -dumpbase-ext when -dumpbase was
10434 given explicitly. */
10435 if (dumpbase && *dumpbase && !ext)
10440 /* Do not override the explicitly-specified -dumpbase-ext with
10441 the specs-provided overrider. */
10445 else if (argc != 0)
10446 fatal_error (input_location, "too many arguments for %%:dumps");
10450 p = quote_spec_arg (xstrdup (dumpdir));
10451 args[nargs++] = concat (" -dumpdir ", p, NULL);
10456 ext = input_basename + basename_length;
10458 /* Use the precomputed outbase, or compute dumpbase from
10459 input_basename, just like %b would. */
10462 if (dumpbase && *dumpbase)
10464 base = xstrdup (dumpbase);
10465 p = base + outbase_length;
10466 gcc_checking_assert (strncmp (base, outbase, outbase_length) == 0);
10467 gcc_checking_assert (strcmp (p, ext) == 0);
10469 else if (outbase_length)
10471 base = xstrndup (outbase, outbase_length);
10476 base = xstrndup (input_basename, suffixed_basename_length);
10477 p = base + basename_length;
10480 if (compare_debug < 0 || !p || strcmp (p, ext) != 0)
10486 if (compare_debug < 0)
10491 p = concat (base, gk, ext, NULL);
10497 base = quote_spec_arg (base);
10498 args[nargs++] = concat (" -dumpbase ", base, NULL);
10503 p = quote_spec_arg (xstrdup (ext));
10504 args[nargs++] = concat (" -dumpbase-ext ", p, NULL);
10508 const char *ret = concat (args[0], args[1], args[2], NULL);
10510 free (args[--nargs]);
10515 /* Returns "" if ARGV[ARGC - 2] is greater than ARGV[ARGC-1].
10516 Otherwise, return NULL. */
10518 static const char *
10519 greater_than_spec_func (int argc, const char **argv)
10526 gcc_assert (argc >= 2);
10528 long arg = strtol (argv[argc - 2], &converted, 10);
10529 gcc_assert (converted != argv[argc - 2]);
10531 long lim = strtol (argv[argc - 1], &converted, 10);
10532 gcc_assert (converted != argv[argc - 1]);
10540 /* Returns "" if debug_info_level is greater than ARGV[ARGC-1].
10541 Otherwise, return NULL. */
10543 static const char *
10544 debug_level_greater_than_spec_func (int argc, const char **argv)
10549 fatal_error (input_location,
10550 "wrong number of arguments to %%:debug-level-gt");
10552 long arg = strtol (argv[0], &converted, 10);
10553 gcc_assert (converted != argv[0]);
10555 if (debug_info_level > arg)
10562 path_prefix_reset (path_prefix *prefix)
10564 struct prefix_list *iter, *next;
10565 iter = prefix->plist;
10569 free (const_cast <char *> (iter->prefix));
10574 prefix->max_len = 0;
10577 /* The function takes 3 arguments: OPTION name, file name and location
10578 where we search for Fortran modules.
10579 When the FILE is found by find_file, return OPTION=path_to_file. */
10581 static const char *
10582 find_fortran_preinclude_file (int argc, const char **argv)
10584 char *result = NULL;
10588 struct path_prefix prefixes = { 0, 0, "preinclude" };
10590 /* Search first for 'finclude' folder location for a header file
10591 installed by the compiler (similar to omp_lib.h). */
10592 add_prefix (&prefixes, argv[2], NULL, 0, 0, 0);
10593 #ifdef TOOL_INCLUDE_DIR
10594 /* Then search: <prefix>/<target>/<include>/finclude */
10595 add_prefix (&prefixes, TOOL_INCLUDE_DIR "/finclude/",
10598 #ifdef NATIVE_SYSTEM_HEADER_DIR
10599 /* Then search: <sysroot>/usr/include/finclude/<multilib> */
10600 add_sysrooted_hdrs_prefix (&prefixes, NATIVE_SYSTEM_HEADER_DIR "/finclude/",
10604 const char *path = find_a_file (&include_prefixes, argv[1], R_OK, false);
10606 result = concat (argv[0], path, NULL);
10609 path = find_a_file (&prefixes, argv[1], R_OK, false);
10611 result = concat (argv[0], path, NULL);
10614 path_prefix_reset (&prefixes);
10618 /* If any character in ORIG fits QUOTE_P (_, P), reallocate the string
10619 so as to precede every one of them with a backslash. Return the
10620 original string or the reallocated one. */
10622 static inline char *
10623 quote_string (char *orig, bool (*quote_p)(char, void *), void *p)
10625 int len, number_of_space = 0;
10627 for (len = 0; orig[len]; len++)
10628 if (quote_p (orig[len], p))
10631 if (number_of_space)
10633 char *new_spec = (char *) xmalloc (len + number_of_space + 1);
10635 for (j = 0, k = 0; j <= len; j++, k++)
10637 if (quote_p (orig[j], p))
10638 new_spec[k++] = '\\';
10639 new_spec[k] = orig[j];
10648 /* Return true iff C is any of the characters convert_white_space
10652 whitespace_to_convert_p (char c, void *)
10654 return (c == ' ' || c == '\t');
10657 /* Insert backslash before spaces in ORIG (usually a file path), to
10658 avoid being broken by spec parser.
10660 This function is needed as do_spec_1 treats white space (' ' and '\t')
10661 as the end of an argument. But in case of -plugin /usr/gcc install/xxx.so,
10662 the file name should be treated as a single argument rather than being
10663 broken into multiple. Solution is to insert '\\' before the space in a
10666 This function converts and only converts all occurrence of ' '
10667 to '\\' + ' ' and '\t' to '\\' + '\t'. For example:
10669 "a b" -> "a\\ \\ b"
10671 "a\\ b" -> "a\\\\ b"
10673 orig: input null-terminating string that was allocated by xalloc. The
10674 memory it points to might be freed in this function. Behavior undefined
10675 if ORIG wasn't xalloced or was freed already at entry.
10677 Return: ORIG if no conversion needed. Otherwise a newly allocated string
10678 that was converted from ORIG. */
10681 convert_white_space (char *orig)
10683 return quote_string (orig, whitespace_to_convert_p, NULL);
10686 /* Return true iff C matches any of the spec active characters. */
10688 quote_spec_char_p (char c, void *)
10705 /* Like convert_white_space, but deactivate all active spec chars by
10708 static inline char *
10709 quote_spec (char *orig)
10711 return quote_string (orig, quote_spec_char_p, NULL);
10714 /* Like quote_spec, but also turn an empty string into the spec for an
10717 static inline char *
10718 quote_spec_arg (char *orig)
10723 return xstrdup ("%\"");
10726 return quote_spec (orig);
10729 /* Restore all state within gcc.c to the initial state, so that the driver
10730 code can be safely re-run in-process.
10732 Many const char * variables are referenced by static specs (see
10733 INIT_STATIC_SPEC above). These variables are restored to their default
10734 values by a simple loop over the static specs.
10736 For other variables, we directly restore them all to their initial
10737 values (often implicitly 0).
10739 Free the various obstacks in this file, along with "opts_obstack"
10742 This function also restores any environment variables that were changed. */
10745 driver::finalize ()
10748 diagnostic_finish (global_dc);
10751 at_file_supplied = 0;
10752 print_help_list = 0;
10754 verbose_only_flag = 0;
10755 print_subprocess_help = 0;
10757 report_times_to_file = NULL;
10758 target_system_root = DEFAULT_TARGET_SYSTEM_ROOT;
10759 target_system_root_changed = 0;
10760 target_sysroot_suffix = 0;
10761 target_sysroot_hdrs_suffix = 0;
10762 save_temps_flag = SAVE_TEMPS_NONE;
10763 save_temps_overrides_dumpdir = false;
10764 dumpdir_trailing_dash_added = false;
10767 free (dumpbase_ext);
10769 dumpdir = dumpbase = dumpbase_ext = outbase = NULL;
10770 dumpdir_length = outbase_length = 0;
10771 spec_machine = DEFAULT_TARGET_MACHINE;
10772 greatest_status = 1;
10774 obstack_free (&obstack, NULL);
10775 obstack_free (&opts_obstack, NULL); /* in opts.c */
10776 obstack_free (&collect_obstack, NULL);
10778 link_command_spec = LINK_COMMAND_SPEC;
10780 obstack_free (&multilib_obstack, NULL);
10782 user_specs_head = NULL;
10783 user_specs_tail = NULL;
10785 /* Within the "compilers" vec, the fields "suffix" and "spec" were
10786 statically allocated for the default compilers, but dynamically
10787 allocated for additional compilers. Delete them for the latter. */
10788 for (int i = n_default_compilers; i < n_compilers; i++)
10790 free (const_cast <char *> (compilers[i].suffix));
10791 free (const_cast <char *> (compilers[i].spec));
10793 XDELETEVEC (compilers);
10797 linker_options.truncate (0);
10798 assembler_options.truncate (0);
10799 preprocessor_options.truncate (0);
10801 path_prefix_reset (&exec_prefixes);
10802 path_prefix_reset (&startfile_prefixes);
10803 path_prefix_reset (&include_prefixes);
10805 machine_suffix = 0;
10806 just_machine_suffix = 0;
10807 gcc_exec_prefix = 0;
10808 gcc_libexec_prefix = 0;
10809 md_exec_prefix = MD_EXEC_PREFIX;
10810 md_startfile_prefix = MD_STARTFILE_PREFIX;
10811 md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
10813 multilib_os_dir = 0;
10816 /* Free any specs dynamically-allocated by set_spec.
10817 These will be at the head of the list, before the
10818 statically-allocated ones. */
10821 while (specs != static_specs)
10823 spec_list *next = specs->next;
10824 free (const_cast <char *> (specs->name));
10830 for (unsigned i = 0; i < ARRAY_SIZE (static_specs); i++)
10832 spec_list *sl = &static_specs[i];
10836 free (const_cast <char *> (*(sl->ptr_spec)));
10837 sl->alloc_p = false;
10839 *(sl->ptr_spec) = sl->default_ptr;
10842 extra_specs = NULL;
10845 processing_spec_function = 0;
10853 execution_count = 0;
10856 temp_filename = NULL;
10857 temp_filename_length = 0;
10858 always_delete_queue = NULL;
10859 failure_delete_queue = NULL;
10861 XDELETEVEC (switches);
10864 n_switches_alloc = 0;
10867 compare_debug_second = 0;
10868 compare_debug_opt = NULL;
10869 for (int i = 0; i < 2; i++)
10871 switches_debug_check[i] = NULL;
10872 n_switches_debug_check[i] = 0;
10873 n_switches_alloc_debug_check[i] = 0;
10874 debug_check_temp_file[i] = NULL;
10877 XDELETEVEC (infiles);
10880 n_infiles_alloc = 0;
10882 combine_inputs = false;
10883 added_libraries = 0;
10884 XDELETEVEC (outfiles);
10887 last_language_n_infiles = 0;
10888 gcc_input_filename = NULL;
10889 input_file_number = 0;
10890 input_filename_length = 0;
10891 basename_length = 0;
10892 suffixed_basename_length = 0;
10893 input_basename = NULL;
10894 input_suffix = NULL;
10895 /* We don't need to purge "input_stat", just to unset "input_stat_set". */
10896 input_stat_set = 0;
10897 input_file_compiler = NULL;
10899 delete_this_arg = 0;
10900 this_is_output_file = 0;
10901 this_is_library_file = 0;
10902 this_is_linker_script = 0;
10903 input_from_pipe = 0;
10904 suffix_subst = NULL;
10909 used_arg.finalize ();
10913 Targets can provide configure-time default options in
10914 OPTION_DEFAULT_SPECS. The jit needs to access these, but
10915 they are expressed in the spec language.
10917 Run just enough of the driver to be able to expand these
10918 specs, and then call the callback CB on each
10919 such option. The options strings are *without* a leading
10920 '-' character e.g. ("march=x86-64"). Finally, clean up. */
10923 driver_get_configure_time_options (void (*cb) (const char *option,
10929 obstack_init (&obstack);
10930 init_opts_obstack ();
10933 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
10934 do_option_spec (option_default_specs[i].name,
10935 option_default_specs[i].spec);
10937 for (i = 0; (int) i < n_switches; i++)
10939 gcc_assert (switches[i].part1);
10940 (*cb) (switches[i].part1, user_data);
10943 obstack_free (&opts_obstack, NULL);
10944 obstack_free (&obstack, NULL);