1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987-2018 Free Software Foundation, Inc.
4 This file is part of GCC.
6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 3, or (at your option) any later
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING3. If not see
18 <http://www.gnu.org/licenses/>. */
20 /* This program is the user interface to the C compiler and possibly to
21 other compilers. It is used because compilation is a complicated procedure
22 which involves running several programs and passing temporary files between
23 them, forwarding the users switches to those programs selectively,
24 and deleting the temporary files at the end.
26 CC recognizes how to compile each input file by suffixes in the file names.
27 Once it knows which kind of compilation to perform, the procedure for
28 compilation is specified by a string called a "spec". */
32 #include "coretypes.h"
33 #include "multilib.h" /* before tm.h */
40 #include "diagnostic.h"
44 #include "filenames.h"
45 #include "spellcheck.h"
49 /* Manage the manipulation of env vars.
51 We poison "getenv" and "putenv", so that all enviroment-handling is
52 done through this class. Note that poisoning happens in the
53 preprocessor at the identifier level, and doesn't distinguish between
57 Hence we need to use "get" for the accessor method, not "getenv". */
62 void init (bool can_restore, bool debug);
63 const char *get (const char *name);
64 void xput (const char *string);
79 /* The singleton instance of class env_manager. */
81 static env_manager env;
83 /* Initializer for class env_manager.
85 We can't do this as a constructor since we have a statically
86 allocated instance ("env" above). */
89 env_manager::init (bool can_restore, bool debug)
91 m_can_restore = can_restore;
95 /* Get the value of NAME within the environment. Essentially
96 a wrapper for ::getenv, but adding logging, and the possibility
97 of caching results. */
100 env_manager::get (const char *name)
102 const char *result = ::getenv (name);
104 fprintf (stderr, "env_manager::getenv (%s) -> %s\n", name, result);
108 /* Put the given KEY=VALUE entry STRING into the environment.
109 If the env_manager was initialized with CAN_RESTORE set, then
110 also record the old value of KEY within the environment, so that it
111 can be later restored. */
114 env_manager::xput (const char *string)
117 fprintf (stderr, "env_manager::xput (%s)\n", string);
119 fnotice (stderr, "%s\n", string);
123 char *equals = strchr (const_cast <char *> (string), '=');
127 kv.m_key = xstrndup (string, equals - string);
128 const char *cur_value = ::getenv (kv.m_key);
130 fprintf (stderr, "saving old value: %s\n",cur_value);
131 kv.m_value = cur_value ? xstrdup (cur_value) : NULL;
132 m_keys.safe_push (kv);
135 ::putenv (CONST_CAST (char *, string));
138 /* Undo any xputenv changes made since last restore.
139 Can only be called if the env_manager was initialized with
140 CAN_RESTORE enabled. */
143 env_manager::restore ()
148 gcc_assert (m_can_restore);
150 FOR_EACH_VEC_ELT_REVERSE (m_keys, i, item)
153 printf ("restoring saved key: %s value: %s\n", item->m_key, item->m_value);
155 ::setenv (item->m_key, item->m_value, 1);
157 ::unsetenv (item->m_key);
159 free (item->m_value);
165 /* Forbid other uses of getenv and putenv. */
166 #if (GCC_VERSION >= 3000)
167 #pragma GCC poison getenv putenv
172 /* By default there is no special suffix for target executables. */
173 #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 indicating whether we should ONLY print the command and
224 arguments (like verbose_flag) without executing the command.
225 Displayed arguments are quoted so that the generated command
226 line is suitable for execution. This is intended for use in
227 shell scripts to capture the driver-generated command line. */
228 static int verbose_only_flag;
230 /* Flag indicating how to print command line options of sub-processes. */
232 static int print_subprocess_help;
234 /* Linker suffix passed to -fuse-ld=... */
235 static const char *use_ld;
237 /* Whether we should report subprocess execution times to a file. */
239 FILE *report_times_to_file = NULL;
241 /* Nonzero means place this string before uses of /, so that include
242 and library files can be found in an alternate location. */
244 #ifdef TARGET_SYSTEM_ROOT
245 #define DEFAULT_TARGET_SYSTEM_ROOT (TARGET_SYSTEM_ROOT)
247 #define DEFAULT_TARGET_SYSTEM_ROOT (0)
249 static const char *target_system_root = DEFAULT_TARGET_SYSTEM_ROOT;
251 /* Nonzero means pass the updated target_system_root to the compiler. */
253 static int target_system_root_changed;
255 /* Nonzero means append this string to target_system_root. */
257 static const char *target_sysroot_suffix = 0;
259 /* Nonzero means append this string to target_system_root for headers. */
261 static const char *target_sysroot_hdrs_suffix = 0;
263 /* Nonzero means write "temp" files in source directory
264 and use the source file's name in them, and don't delete them. */
266 static enum save_temps {
267 SAVE_TEMPS_NONE, /* no -save-temps */
268 SAVE_TEMPS_CWD, /* -save-temps in current directory */
269 SAVE_TEMPS_OBJ /* -save-temps in object directory */
272 /* Output file to use to get the object directory for -save-temps=obj */
273 static char *save_temps_prefix = 0;
274 static size_t save_temps_length = 0;
276 /* The compiler version. */
278 static const char *compiler_version;
280 /* The target version. */
282 static const char *const spec_version = DEFAULT_TARGET_VERSION;
284 /* The target machine. */
286 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
287 static const char *spec_host_machine = DEFAULT_REAL_TARGET_MACHINE;
289 /* List of offload targets. Separated by colon. Empty string for
290 -foffload=disable. */
292 static char *offload_targets = NULL;
294 /* Nonzero if cross-compiling.
295 When -b is used, the value comes from the `specs' file. */
297 #ifdef CROSS_DIRECTORY_STRUCTURE
298 static const char *cross_compile = "1";
300 static const char *cross_compile = "0";
303 /* Greatest exit code of sub-processes that has been encountered up to
305 static int greatest_status = 1;
307 /* This is the obstack which we use to allocate many strings. */
309 static struct obstack obstack;
311 /* This is the obstack to build an environment variable to pass to
312 collect2 that describes all of the relevant switches of what to
313 pass the compiler in building the list of pointers to constructors
316 static struct obstack collect_obstack;
318 /* Forward declaration for prototypes. */
322 static void init_spec (void);
323 static void store_arg (const char *, int, int);
324 static void insert_wrapper (const char *);
325 static char *load_specs (const char *);
326 static void read_specs (const char *, bool, bool);
327 static void set_spec (const char *, const char *, bool);
328 static struct compiler *lookup_compiler (const char *, size_t, const char *);
329 static char *build_search_list (const struct path_prefix *, const char *,
331 static void xputenv (const char *);
332 static void putenv_from_prefixes (const struct path_prefix *, const char *,
334 static int access_check (const char *, int);
335 static char *find_a_file (const struct path_prefix *, const char *, int, bool);
336 static void add_prefix (struct path_prefix *, const char *, const char *,
338 static void add_sysrooted_prefix (struct path_prefix *, const char *,
339 const char *, int, int, int);
340 static char *skip_whitespace (char *);
341 static void delete_if_ordinary (const char *);
342 static void delete_temp_files (void);
343 static void delete_failure_queue (void);
344 static void clear_failure_queue (void);
345 static int check_live_switch (int, int);
346 static const char *handle_braces (const char *);
347 static inline bool input_suffix_matches (const char *, const char *);
348 static inline bool switch_matches (const char *, const char *, int);
349 static inline void mark_matching_switches (const char *, const char *, int);
350 static inline void process_marked_switches (void);
351 static const char *process_brace_body (const char *, const char *, const char *, int, int);
352 static const struct spec_function *lookup_spec_function (const char *);
353 static const char *eval_spec_function (const char *, const char *);
354 static const char *handle_spec_function (const char *, bool *);
355 static char *save_string (const char *, int);
356 static void set_collect_gcc_options (void);
357 static int do_spec_1 (const char *, int, const char *);
358 static int do_spec_2 (const char *);
359 static void do_option_spec (const char *, const char *);
360 static void do_self_spec (const char *);
361 static const char *find_file (const char *);
362 static int is_directory (const char *, bool);
363 static const char *validate_switches (const char *, bool);
364 static void validate_all_switches (void);
365 static inline void validate_switches_from_spec (const char *, bool);
366 static void give_switch (int, int);
367 static int default_arg (const char *, int);
368 static void set_multilib_dir (void);
369 static void print_multilib_info (void);
370 static void perror_with_name (const char *);
371 static void display_help (void);
372 static void add_preprocessor_option (const char *, int);
373 static void add_assembler_option (const char *, int);
374 static void add_linker_option (const char *, int);
375 static void process_command (unsigned int, struct cl_decoded_option *);
376 static int execute (void);
377 static void alloc_args (void);
378 static void clear_args (void);
379 static void fatal_signal (int);
380 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
381 static void init_gcc_specs (struct obstack *, const char *, const char *,
384 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
385 static const char *convert_filename (const char *, int, int);
388 static void try_generate_repro (const char **argv);
389 static const char *getenv_spec_function (int, const char **);
390 static const char *if_exists_spec_function (int, const char **);
391 static const char *if_exists_else_spec_function (int, const char **);
392 static const char *sanitize_spec_function (int, const char **);
393 static const char *replace_outfile_spec_function (int, const char **);
394 static const char *remove_outfile_spec_function (int, const char **);
395 static const char *version_compare_spec_function (int, const char **);
396 static const char *include_spec_function (int, const char **);
397 static const char *find_file_spec_function (int, const char **);
398 static const char *find_plugindir_spec_function (int, const char **);
399 static const char *print_asm_header_spec_function (int, const char **);
400 static const char *compare_debug_dump_opt_spec_function (int, const char **);
401 static const char *compare_debug_self_opt_spec_function (int, const char **);
402 static const char *compare_debug_auxbase_opt_spec_function (int, const char **);
403 static const char *pass_through_libs_spec_func (int, const char **);
404 static const char *replace_extension_spec_func (int, const char **);
405 static const char *greater_than_spec_func (int, const char **);
406 static const char *debug_level_greater_than_spec_func (int, const char **);
407 static char *convert_white_space (char *);
409 /* The Specs Language
411 Specs are strings containing lines, each of which (if not blank)
412 is made up of a program name, and arguments separated by spaces.
413 The program name must be exact and start from root, since no path
414 is searched and it is unreliable to depend on the current working directory.
415 Redirection of input or output is not supported; the subprograms must
416 accept filenames saying what files to read and write.
418 In addition, the specs can contain %-sequences to substitute variable text
419 or for conditional text. Here is a table of all defined %-sequences.
420 Note that spaces are not generated automatically around the results of
421 expanding these sequences; therefore, you can concatenate them together
422 or with constant text in a single argument.
424 %% substitute one % into the program name or argument.
425 %i substitute the name of the input file being processed.
426 %b substitute the basename of the input file being processed.
427 This is the substring up to (and not including) the last period
428 and not including the directory unless -save-temps was specified
429 to put temporaries in a different location.
430 %B same as %b, but include the file suffix (text after the last period).
432 substitute a file name that has suffix SUFFIX and is chosen
433 once per compilation, and mark the argument a la %d. To reduce
434 exposure to denial-of-service attacks, the file name is now
435 chosen in a way that is hard to predict even when previously
436 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
437 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
438 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
439 had been pre-processed. Previously, %g was simply substituted
440 with a file name chosen once per compilation, without regard
441 to any appended suffix (which was therefore treated just like
442 ordinary text), making such attacks more likely to succeed.
444 like %g, but if -pipe is in effect, expands simply to "-".
446 like %g, but if -pipe is in effect, expands to nothing. (We have both
447 %| and %m to accommodate differences between system assemblers; see
448 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
450 like %g, but generates a new temporary file name even if %uSUFFIX
453 substitutes the last file name generated with %uSUFFIX, generating a
454 new one if there is no such last file name. In the absence of any
455 %uSUFFIX, this is just like %gSUFFIX, except they don't share
456 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
457 would involve the generation of two distinct file names, one
458 for each `%g.s' and another for each `%U.s'. Previously, %U was
459 simply substituted with a file name chosen for the previous %u,
460 without regard to any appended suffix.
462 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
463 writable, and if save-temps is off; otherwise, substitute the name
464 of a temporary file, just like %u. This temporary file is not
465 meant for communication between processes, but rather as a junk
468 substitutes .SUFFIX for the suffixes of a matched switch's args when
469 it is subsequently output with %*. SUFFIX is terminated by the next
471 %d marks the argument containing or following the %d as a
472 temporary file name, so that file will be deleted if GCC exits
473 successfully. Unlike %g, this contributes no text to the argument.
474 %w marks the argument containing or following the %w as the
475 "output file" of this compilation. This puts the argument
476 into the sequence of arguments that %o will substitute later.
477 %V indicates that this compilation produces no "output file".
479 like %{...} but mark last argument supplied within
480 as a file to be deleted on failure.
481 %o substitutes the names of all the output files, with spaces
482 automatically placed around them. You should write spaces
483 around the %o as well or the results are undefined.
484 %o is for use in the specs for running the linker.
485 Input files whose names have no recognized suffix are not compiled
486 at all, but they are included among the output files, so they will
488 %O substitutes the suffix for object files. Note that this is
489 handled specially when it immediately follows %g, %u, or %U
490 (with or without a suffix argument) because of the need for
491 those to form complete file names. The handling is such that
492 %O is treated exactly as if it had already been substituted,
493 except that %g, %u, and %U do not currently support additional
494 SUFFIX characters following %O as they would following, for
496 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
497 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
498 and -B options) and -imultilib as necessary.
499 %s current argument is the name of a library or startup file of some sort.
500 Search for that file in a standard list of directories
501 and substitute the full name found.
502 %eSTR Print STR as an error message. STR is terminated by a newline.
503 Use this when inconsistent options are detected.
504 %nSTR Print STR as a notice. STR is terminated by a newline.
505 %x{OPTION} Accumulate an option for %X.
506 %X Output the accumulated linker options specified by compilations.
507 %Y Output the accumulated assembler options specified by compilations.
508 %Z Output the accumulated preprocessor options specified by compilations.
509 %a process ASM_SPEC as a spec.
510 This allows config.h to specify part of the spec for running as.
511 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
512 used here. This can be used to run a post-processor after the
513 assembler has done its job.
514 %D Dump out a -L option for each directory in startfile_prefixes.
515 If multilib_dir is set, extra entries are generated with it affixed.
516 %l process LINK_SPEC as a spec.
517 %L process LIB_SPEC as a spec.
518 %M Output multilib_os_dir.
519 %G process LIBGCC_SPEC as a spec.
520 %R Output the concatenation of target_system_root and
521 target_sysroot_suffix.
522 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
523 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
524 %C process CPP_SPEC as a spec.
525 %1 process CC1_SPEC as a spec.
526 %2 process CC1PLUS_SPEC as a spec.
527 %* substitute the variable part of a matched option. (See below.)
528 Note that each comma in the substituted string is replaced by
529 a single space. A space is appended after the last substition
530 unless there is more text in current sequence.
531 %<S remove all occurrences of -S from the command line.
532 Note - this command is position dependent. % commands in the
533 spec string before this one will see -S, % commands in the
534 spec string after this one will not.
535 %>S Similar to "%<S", but keep it in the GCC command line.
536 %<S* remove all occurrences of all switches beginning with -S from the
539 Call the named function FUNCTION, passing it ARGS. ARGS is
540 first processed as a nested spec string, then split into an
541 argument vector in the usual fashion. The function returns
542 a string which is processed as if it had appeared literally
543 as part of the current spec.
544 %{S} substitutes the -S switch, if that switch was given to GCC.
545 If that switch was not specified, this substitutes nothing.
546 Here S is a metasyntactic variable.
547 %{S*} substitutes all the switches specified to GCC whose names start
548 with -S. This is used for -o, -I, etc; switches that take
549 arguments. GCC considers `-o foo' as being one switch whose
550 name starts with `o'. %{o*} would substitute this text,
551 including the space; thus, two arguments would be generated.
552 %{S*&T*} likewise, but preserve order of S and T options (the order
553 of S and T in the spec is not significant). Can be any number
554 of ampersand-separated variables; for each the wild card is
555 optional. Useful for CPP as %{D*&U*&A*}.
557 %{S:X} substitutes X, if the -S switch was given to GCC.
558 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
559 %{S*:X} substitutes X if one or more switches whose names start
560 with -S was given to GCC. Normally X is substituted only
561 once, no matter how many such switches appeared. However,
562 if %* appears somewhere in X, then X will be substituted
563 once for each matching switch, with the %* replaced by the
564 part of that switch that matched the '*'. A space will be
565 appended after the last substition unless there is more
566 text in current sequence.
567 %{.S:X} substitutes X, if processing a file with suffix S.
568 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
569 %{,S:X} substitutes X, if processing a file which will use spec S.
570 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
572 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
573 combined with '!', '.', ',', and '*' as above binding stronger
575 If %* appears in X, all of the alternatives must be starred, and
576 only the first matching alternative is substituted.
577 %{%:function(args):X}
578 Call function named FUNCTION with args ARGS. If the function
579 returns non-NULL, then X is substituted, if it returns
580 NULL, it isn't substituted.
581 %{S:X; if S was given to GCC, substitutes X;
582 T:Y; else if T was given to GCC, substitutes Y;
583 :D} else substitutes D. There can be as many clauses as you need.
584 This may be combined with '.', '!', ',', '|', and '*' as above.
586 %(Spec) processes a specification defined in a specs file as *Spec:
588 The switch matching text S in a %{S}, %{S:X}, or similar construct can use
589 a backslash to ignore the special meaning of the character following it,
590 thus allowing literal matching of a character that is otherwise specially
591 treated. For example, %{std=iso9899\:1999:X} substitutes X if the
592 -std=iso9899:1999 option is given.
594 The conditional text X in a %{S:X} or similar construct may contain
595 other nested % constructs or spaces, or even newlines. They are
596 processed as usual, as described above. Trailing white space in X is
597 ignored. White space may also appear anywhere on the left side of the
598 colon in these constructs, except between . or * and the corresponding
601 The -O, -f, -g, -m, and -W switches are handled specifically in these
602 constructs. If another value of -O or the negated form of a -f, -m, or
603 -W switch is found later in the command line, the earlier switch
604 value is ignored, except with {S*} where S is just one letter; this
605 passes all matching options.
607 The character | at the beginning of the predicate text is used to indicate
608 that a command should be piped to the following command, but only if -pipe
611 Note that it is built into GCC which switches take arguments and which
612 do not. You might think it would be useful to generalize this to
613 allow each compiler's spec to say which switches take arguments. But
614 this cannot be done in a consistent fashion. GCC cannot even decide
615 which input files have been specified without knowing which switches
616 take arguments, and it must know which input files to compile in order
617 to tell which compilers to run.
619 GCC also knows implicitly that arguments starting in `-l' are to be
620 treated as compiler output files, and passed to the linker in their
621 proper position among the other output files. */
623 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
625 /* config.h can define ASM_SPEC to provide extra args to the assembler
626 or extra switch-translations. */
631 /* config.h can define ASM_FINAL_SPEC to run a post processor after
632 the assembler has run. */
633 #ifndef ASM_FINAL_SPEC
634 #define ASM_FINAL_SPEC \
636 objcopy --extract-dwo \
637 %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \
638 %{c:%{o*:%:replace-extension(%{o*:%*} .dwo)}%{!o*:%b.dwo}}%{!c:%b.dwo} \n\
639 objcopy --strip-dwo \
640 %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \
644 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
645 or extra switch-translations. */
650 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
651 or extra switch-translations. */
656 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
657 or extra switch-translations. */
659 #define CC1PLUS_SPEC ""
662 /* config.h can define LINK_SPEC to provide extra args to the linker
663 or extra switch-translations. */
668 /* config.h can define LIB_SPEC to override the default libraries. */
670 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
673 /* When using -fsplit-stack we need to wrap pthread_create, in order
674 to initialize the stack guard. We always use wrapping, rather than
675 shared library ordering, and we keep the wrapper function in
676 libgcc. This is not yet a real spec, though it could become one;
677 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping
678 only works with GNU ld and gold. */
679 #ifdef HAVE_GOLD_NON_DEFAULT_SPLIT_STACK
680 #define STACK_SPLIT_SPEC " %{fsplit-stack: -fuse-ld=gold --wrap=pthread_create}"
682 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}"
686 #define STATIC_LIBASAN_LIBS \
687 " %{static-libasan|static:%:include(libsanitizer.spec)%(link_libasan)}"
688 #ifdef LIBASAN_EARLY_SPEC
689 #define LIBASAN_SPEC STATIC_LIBASAN_LIBS
690 #elif defined(HAVE_LD_STATIC_DYNAMIC)
691 #define LIBASAN_SPEC "%{static-libasan:" LD_STATIC_OPTION \
692 "} -lasan %{static-libasan:" LD_DYNAMIC_OPTION "}" \
695 #define LIBASAN_SPEC "-lasan" STATIC_LIBASAN_LIBS
699 #ifndef LIBASAN_EARLY_SPEC
700 #define LIBASAN_EARLY_SPEC ""
704 #define STATIC_LIBTSAN_LIBS \
705 " %{static-libtsan|static:%:include(libsanitizer.spec)%(link_libtsan)}"
706 #ifdef LIBTSAN_EARLY_SPEC
707 #define LIBTSAN_SPEC STATIC_LIBTSAN_LIBS
708 #elif defined(HAVE_LD_STATIC_DYNAMIC)
709 #define LIBTSAN_SPEC "%{static-libtsan:" LD_STATIC_OPTION \
710 "} -ltsan %{static-libtsan:" LD_DYNAMIC_OPTION "}" \
713 #define LIBTSAN_SPEC "-ltsan" STATIC_LIBTSAN_LIBS
717 #ifndef LIBTSAN_EARLY_SPEC
718 #define LIBTSAN_EARLY_SPEC ""
722 #define STATIC_LIBLSAN_LIBS \
723 " %{static-liblsan|static:%:include(libsanitizer.spec)%(link_liblsan)}"
724 #ifdef LIBLSAN_EARLY_SPEC
725 #define LIBLSAN_SPEC STATIC_LIBLSAN_LIBS
726 #elif defined(HAVE_LD_STATIC_DYNAMIC)
727 #define LIBLSAN_SPEC "%{static-liblsan:" LD_STATIC_OPTION \
728 "} -llsan %{static-liblsan:" LD_DYNAMIC_OPTION "}" \
731 #define LIBLSAN_SPEC "-llsan" STATIC_LIBLSAN_LIBS
735 #ifndef LIBLSAN_EARLY_SPEC
736 #define LIBLSAN_EARLY_SPEC ""
739 #ifndef LIBUBSAN_SPEC
740 #define STATIC_LIBUBSAN_LIBS \
741 " %{static-libubsan|static:%:include(libsanitizer.spec)%(link_libubsan)}"
742 #ifdef HAVE_LD_STATIC_DYNAMIC
743 #define LIBUBSAN_SPEC "%{static-libubsan:" LD_STATIC_OPTION \
744 "} -lubsan %{static-libubsan:" LD_DYNAMIC_OPTION "}" \
747 #define LIBUBSAN_SPEC "-lubsan" STATIC_LIBUBSAN_LIBS
751 /* Linker options for compressed debug sections. */
752 #if HAVE_LD_COMPRESS_DEBUG == 0
753 /* No linker support. */
754 #define LINK_COMPRESS_DEBUG_SPEC \
755 " %{gz*:%e-gz is not supported in this configuration} "
756 #elif HAVE_LD_COMPRESS_DEBUG == 1
757 /* GNU style on input, GNU ld options. Reject, not useful. */
758 #define LINK_COMPRESS_DEBUG_SPEC \
759 " %{gz*:%e-gz is not supported in this configuration} "
760 #elif HAVE_LD_COMPRESS_DEBUG == 2
761 /* GNU style, GNU gold options. */
762 #define LINK_COMPRESS_DEBUG_SPEC \
763 " %{gz|gz=zlib-gnu:" LD_COMPRESS_DEBUG_OPTION "=zlib}" \
764 " %{gz=none:" LD_COMPRESS_DEBUG_OPTION "=none}" \
765 " %{gz=zlib:%e-gz=zlib is not supported in this configuration} "
766 #elif HAVE_LD_COMPRESS_DEBUG == 3
767 /* ELF gABI style. */
768 #define LINK_COMPRESS_DEBUG_SPEC \
769 " %{gz|gz=zlib:" LD_COMPRESS_DEBUG_OPTION "=zlib}" \
770 " %{gz=none:" LD_COMPRESS_DEBUG_OPTION "=none}" \
771 " %{gz=zlib-gnu:" LD_COMPRESS_DEBUG_OPTION "=zlib-gnu} "
773 #error Unknown value for HAVE_LD_COMPRESS_DEBUG.
776 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
779 #if defined(REAL_LIBGCC_SPEC)
780 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
781 #elif defined(LINK_LIBGCC_SPECIAL_1)
782 /* Have gcc do the search for libgcc.a. */
783 #define LIBGCC_SPEC "libgcc.a%s"
785 #define LIBGCC_SPEC "-lgcc"
789 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
790 #ifndef STARTFILE_SPEC
791 #define STARTFILE_SPEC \
792 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
795 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
797 #define ENDFILE_SPEC ""
801 #define LINKER_NAME "collect2"
804 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
805 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
810 /* Assembler options for compressed debug sections. */
811 #if HAVE_LD_COMPRESS_DEBUG < 2
812 /* Reject if the linker cannot write compressed debug sections. */
813 #define ASM_COMPRESS_DEBUG_SPEC \
814 " %{gz*:%e-gz is not supported in this configuration} "
815 #else /* HAVE_LD_COMPRESS_DEBUG >= 2 */
816 #if HAVE_AS_COMPRESS_DEBUG == 0
817 /* No assembler support. Ignore silently. */
818 #define ASM_COMPRESS_DEBUG_SPEC \
820 #elif HAVE_AS_COMPRESS_DEBUG == 1
821 /* GNU style, GNU as options. */
822 #define ASM_COMPRESS_DEBUG_SPEC \
823 " %{gz|gz=zlib-gnu:" AS_COMPRESS_DEBUG_OPTION "}" \
824 " %{gz=none:" AS_NO_COMPRESS_DEBUG_OPTION "}" \
825 " %{gz=zlib:%e-gz=zlib is not supported in this configuration} "
826 #elif HAVE_AS_COMPRESS_DEBUG == 2
827 /* ELF gABI style. */
828 #define ASM_COMPRESS_DEBUG_SPEC \
829 " %{gz|gz=zlib:" AS_COMPRESS_DEBUG_OPTION "=zlib}" \
830 " %{gz=none:" AS_COMPRESS_DEBUG_OPTION "=none}" \
831 " %{gz=zlib-gnu:" AS_COMPRESS_DEBUG_OPTION "=zlib-gnu} "
833 #error Unknown value for HAVE_AS_COMPRESS_DEBUG.
835 #endif /* HAVE_LD_COMPRESS_DEBUG >= 2 */
837 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
839 #ifndef ASM_DEBUG_SPEC
840 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
841 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
842 # define ASM_DEBUG_SPEC \
843 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
844 ? "%{%:debug-level-gt(0):" \
845 "%{gdwarf*:--gdwarf2}%{!gdwarf*:%{g*:--gstabs}}}" ASM_MAP \
846 : "%{%:debug-level-gt(0):" \
847 "%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
849 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
850 # define ASM_DEBUG_SPEC "%{g*:%{%:debug-level-gt(0):--gstabs}}" ASM_MAP
852 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
853 # define ASM_DEBUG_SPEC "%{g*:%{%:debug-level-gt(0):--gdwarf2}}" ASM_MAP
857 #ifndef ASM_DEBUG_SPEC
858 # define ASM_DEBUG_SPEC ""
861 /* Here is the spec for running the linker, after compiling all files. */
863 /* This is overridable by the target in case they need to specify the
864 -lgcc and -lc order specially, yet not require them to override all
865 of LINK_COMMAND_SPEC. */
866 #ifndef LINK_GCC_C_SEQUENCE_SPEC
867 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
870 #ifndef LINK_SSP_SPEC
871 #ifdef TARGET_LIBC_PROVIDES_SSP
872 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
873 "|fstack-protector-strong|fstack-protector-explicit:}"
875 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
876 "|fstack-protector-strong|fstack-protector-explicit" \
877 ":-lssp_nonshared -lssp}"
881 #ifdef ENABLE_DEFAULT_PIE
882 #define PIE_SPEC "!no-pie"
883 #define NO_FPIE1_SPEC "fno-pie"
884 #define FPIE1_SPEC NO_FPIE1_SPEC ":;"
885 #define NO_FPIE2_SPEC "fno-PIE"
886 #define FPIE2_SPEC NO_FPIE2_SPEC ":;"
887 #define NO_FPIE_SPEC NO_FPIE1_SPEC "|" NO_FPIE2_SPEC
888 #define FPIE_SPEC NO_FPIE_SPEC ":;"
889 #define NO_FPIC1_SPEC "fno-pic"
890 #define FPIC1_SPEC NO_FPIC1_SPEC ":;"
891 #define NO_FPIC2_SPEC "fno-PIC"
892 #define FPIC2_SPEC NO_FPIC2_SPEC ":;"
893 #define NO_FPIC_SPEC NO_FPIC1_SPEC "|" NO_FPIC2_SPEC
894 #define FPIC_SPEC NO_FPIC_SPEC ":;"
895 #define NO_FPIE1_AND_FPIC1_SPEC NO_FPIE1_SPEC "|" NO_FPIC1_SPEC
896 #define FPIE1_OR_FPIC1_SPEC NO_FPIE1_AND_FPIC1_SPEC ":;"
897 #define NO_FPIE2_AND_FPIC2_SPEC NO_FPIE2_SPEC "|" NO_FPIC2_SPEC
898 #define FPIE2_OR_FPIC2_SPEC NO_FPIE2_AND_FPIC2_SPEC ":;"
899 #define NO_FPIE_AND_FPIC_SPEC NO_FPIE_SPEC "|" NO_FPIC_SPEC
900 #define FPIE_OR_FPIC_SPEC NO_FPIE_AND_FPIC_SPEC ":;"
902 #define PIE_SPEC "pie"
903 #define FPIE1_SPEC "fpie"
904 #define NO_FPIE1_SPEC FPIE1_SPEC ":;"
905 #define FPIE2_SPEC "fPIE"
906 #define NO_FPIE2_SPEC FPIE2_SPEC ":;"
907 #define FPIE_SPEC FPIE1_SPEC "|" FPIE2_SPEC
908 #define NO_FPIE_SPEC FPIE_SPEC ":;"
909 #define FPIC1_SPEC "fpic"
910 #define NO_FPIC1_SPEC FPIC1_SPEC ":;"
911 #define FPIC2_SPEC "fPIC"
912 #define NO_FPIC2_SPEC FPIC2_SPEC ":;"
913 #define FPIC_SPEC FPIC1_SPEC "|" FPIC2_SPEC
914 #define NO_FPIC_SPEC FPIC_SPEC ":;"
915 #define FPIE1_OR_FPIC1_SPEC FPIE1_SPEC "|" FPIC1_SPEC
916 #define NO_FPIE1_AND_FPIC1_SPEC FPIE1_OR_FPIC1_SPEC ":;"
917 #define FPIE2_OR_FPIC2_SPEC FPIE2_SPEC "|" FPIC2_SPEC
918 #define NO_FPIE2_AND_FPIC2_SPEC FPIE1_OR_FPIC2_SPEC ":;"
919 #define FPIE_OR_FPIC_SPEC FPIE_SPEC "|" FPIC_SPEC
920 #define NO_FPIE_AND_FPIC_SPEC FPIE_OR_FPIC_SPEC ":;"
923 #ifndef LINK_PIE_SPEC
926 #define LD_PIE_SPEC "-pie"
929 #define LD_PIE_SPEC ""
931 #define LINK_PIE_SPEC "%{static|shared|r:;" PIE_SPEC ":" LD_PIE_SPEC "} "
934 #ifndef LINK_BUILDID_SPEC
935 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
936 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
940 /* Conditional to test whether the LTO plugin is used or not.
941 FIXME: For slim LTO we will need to enable plugin unconditionally. This
942 still cause problems with PLUGIN_LD != LD and when plugin is built but
943 not useable. For GCC 4.6 we don't support slim LTO and thus we can enable
944 plugin only when LTO is enabled. We still honor explicit
945 -fuse-linker-plugin if the linker used understands -plugin. */
947 /* The linker has some plugin support. */
948 #if HAVE_LTO_PLUGIN > 0
949 /* The linker used has full plugin support, use LTO plugin by default. */
950 #if HAVE_LTO_PLUGIN == 2
951 #define PLUGIN_COND "!fno-use-linker-plugin:%{!fno-lto"
952 #define PLUGIN_COND_CLOSE "}"
954 /* The linker used has limited plugin support, use LTO plugin with explicit
955 -fuse-linker-plugin. */
956 #define PLUGIN_COND "fuse-linker-plugin"
957 #define PLUGIN_COND_CLOSE ""
959 #define LINK_PLUGIN_SPEC \
961 -plugin %(linker_plugin_file) \
962 -plugin-opt=%(lto_wrapper) \
963 -plugin-opt=-fresolution=%u.res \
964 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
967 /* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */
968 #define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\
969 %e-fuse-linker-plugin is not supported in this configuration}"
972 /* Linker command line options for -fsanitize= early on the command line. */
973 #ifndef SANITIZER_EARLY_SPEC
974 #define SANITIZER_EARLY_SPEC "\
975 %{!nostdlib:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_EARLY_SPEC "} \
976 %{%:sanitize(thread):" LIBTSAN_EARLY_SPEC "} \
977 %{%:sanitize(leak):" LIBLSAN_EARLY_SPEC "}}}"
980 /* Linker command line options for -fsanitize= late on the command line. */
981 #ifndef SANITIZER_SPEC
982 #define SANITIZER_SPEC "\
983 %{!nostdlib:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_SPEC "\
984 %{static:%ecannot specify -static with -fsanitize=address}}\
985 %{%:sanitize(thread):" LIBTSAN_SPEC "\
986 %{static:%ecannot specify -static with -fsanitize=thread}}\
987 %{%:sanitize(undefined):" LIBUBSAN_SPEC "}\
988 %{%:sanitize(leak):" LIBLSAN_SPEC "}}}"
991 #ifndef POST_LINK_SPEC
992 #define POST_LINK_SPEC ""
995 /* This is the spec to use, once the code for creating the vtable
996 verification runtime library, libvtv.so, has been created. Currently
997 the vtable verification runtime functions are in libstdc++, so we use
998 the spec just below this one. */
999 #ifndef VTABLE_VERIFICATION_SPEC
1000 #if ENABLE_VTABLE_VERIFY
1001 #define VTABLE_VERIFICATION_SPEC "\
1002 %{!nostdlib:%{fvtable-verify=std: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}\
1003 %{fvtable-verify=preinit: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}}"
1005 #define VTABLE_VERIFICATION_SPEC "\
1006 %{fvtable-verify=none:} \
1007 %{fvtable-verify=std: \
1008 %e-fvtable-verify=std is not supported in this configuration} \
1009 %{fvtable-verify=preinit: \
1010 %e-fvtable-verify=preinit is not supported in this configuration}"
1015 #define CHKP_SPEC ""
1018 /* -u* was put back because both BSD and SysV seem to support it. */
1019 /* %{static|no-pie|static-pie:} simply prevents an error message:
1020 1. If the target machine doesn't handle -static.
1021 2. If PIE isn't enabled by default.
1022 3. If the target machine doesn't handle -static-pie.
1024 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
1025 scripts which exist in user specified directories, or in standard
1027 /* We pass any -flto flags on to the linker, which is expected
1028 to understand them. In practice, this means it had better be collect2. */
1029 /* %{e*} includes -export-dynamic; see comment in common.opt. */
1030 #ifndef LINK_COMMAND_SPEC
1031 #define LINK_COMMAND_SPEC "\
1032 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
1035 "%{flto|flto=*:%<fcompare-debug*} \
1036 %{flto} %{fno-lto} %{flto=*} %l " LINK_PIE_SPEC \
1037 "%{fuse-ld=*:-fuse-ld=%*} " LINK_COMPRESS_DEBUG_SPEC \
1038 "%X %{o*} %{e*} %{N} %{n} %{r}\
1039 %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}} \
1040 %{static|no-pie|static-pie:} %{L*} %(mfwrap) %(link_libgcc) " \
1041 VTABLE_VERIFICATION_SPEC " " SANITIZER_EARLY_SPEC " %o " CHKP_SPEC " \
1042 %{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1):\
1043 %:include(libgomp.spec)%(link_gomp)}\
1044 %{fgnu-tm:%:include(libitm.spec)%(link_itm)}\
1045 %(mflib) " STACK_SPLIT_SPEC "\
1046 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} " SANITIZER_SPEC " \
1047 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
1048 %{!nostdlib:%{!nostartfiles:%E}} %{T*} \n%(post_link) }}}}}}"
1051 #ifndef LINK_LIBGCC_SPEC
1052 /* Generate -L options for startfile prefix list. */
1053 # define LINK_LIBGCC_SPEC "%D"
1056 #ifndef STARTFILE_PREFIX_SPEC
1057 # define STARTFILE_PREFIX_SPEC ""
1060 #ifndef SYSROOT_SPEC
1061 # define SYSROOT_SPEC "--sysroot=%R"
1064 #ifndef SYSROOT_SUFFIX_SPEC
1065 # define SYSROOT_SUFFIX_SPEC ""
1068 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
1069 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
1072 static const char *asm_debug = ASM_DEBUG_SPEC;
1073 static const char *cpp_spec = CPP_SPEC;
1074 static const char *cc1_spec = CC1_SPEC;
1075 static const char *cc1plus_spec = CC1PLUS_SPEC;
1076 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
1077 static const char *link_ssp_spec = LINK_SSP_SPEC;
1078 static const char *asm_spec = ASM_SPEC;
1079 static const char *asm_final_spec = ASM_FINAL_SPEC;
1080 static const char *link_spec = LINK_SPEC;
1081 static const char *lib_spec = LIB_SPEC;
1082 static const char *link_gomp_spec = "";
1083 static const char *libgcc_spec = LIBGCC_SPEC;
1084 static const char *endfile_spec = ENDFILE_SPEC;
1085 static const char *startfile_spec = STARTFILE_SPEC;
1086 static const char *linker_name_spec = LINKER_NAME;
1087 static const char *linker_plugin_file_spec = "";
1088 static const char *lto_wrapper_spec = "";
1089 static const char *lto_gcc_spec = "";
1090 static const char *post_link_spec = POST_LINK_SPEC;
1091 static const char *link_command_spec = LINK_COMMAND_SPEC;
1092 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
1093 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
1094 static const char *sysroot_spec = SYSROOT_SPEC;
1095 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
1096 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
1097 static const char *self_spec = "";
1099 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
1100 There should be no need to override these in target dependent files,
1101 but we need to copy them to the specs file so that newer versions
1102 of the GCC driver can correctly drive older tool chains with the
1103 appropriate -B options. */
1105 /* When cpplib handles traditional preprocessing, get rid of this, and
1106 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
1107 that we default the front end language better. */
1108 static const char *trad_capable_cpp =
1109 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}";
1111 /* We don't wrap .d files in %W{} since a missing .d file, and
1112 therefore no dependency entry, confuses make into thinking a .o
1113 file that happens to exist is up-to-date. */
1114 static const char *cpp_unique_options =
1115 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
1116 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
1117 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
1118 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
1119 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
1120 %{remap} %{g3|ggdb3|gstabs3|gxcoff3|gvms3:-dD}\
1121 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
1122 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
1125 /* This contains cpp options which are common with cc1_options and are passed
1126 only when preprocessing only to avoid duplication. We pass the cc1 spec
1127 options to the preprocessor so that it the cc1 spec may manipulate
1128 options used to set target flags. Those special target flags settings may
1129 in turn cause preprocessor symbols to be defined specially. */
1130 static const char *cpp_options =
1131 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
1132 %{f*} %{g*:%{%:debug-level-gt(0):%{g*}\
1133 %{!fno-working-directory:-fworking-directory}}} %{O*}\
1134 %{undef} %{save-temps*:-fpch-preprocess}";
1136 /* This contains cpp options which are not passed when the preprocessor
1137 output will be used by another program. */
1138 static const char *cpp_debug_options = "%{d*}";
1140 /* NB: This is shared amongst all front-ends, except for Ada. */
1141 static const char *cc1_options =
1142 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
1143 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
1144 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
1145 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
1146 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
1147 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
1148 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
1149 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\
1150 %{-target-help:--target-help}\
1151 %{-version:--version}\
1152 %{-help=*:--help=%*}\
1153 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
1154 %{fsyntax-only:-o %j} %{-param*}\
1155 %{coverage:-fprofile-arcs -ftest-coverage}\
1156 %{fprofile-arcs|fprofile-generate*|coverage:\
1157 %{!fprofile-update=single:\
1158 %{pthread:-fprofile-update=prefer-atomic}}}";
1160 static const char *asm_options =
1161 "%{-target-help:%:print-asm-header()} "
1163 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
1164 to the assembler equivalents. */
1165 "%{v} %{w:-W} %{I*} "
1167 ASM_COMPRESS_DEBUG_SPEC
1168 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
1170 static const char *invoke_as =
1171 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
1173 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
1174 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
1178 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
1179 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
1183 /* Some compilers have limits on line lengths, and the multilib_select
1184 and/or multilib_matches strings can be very long, so we build them at
1186 static struct obstack multilib_obstack;
1187 static const char *multilib_select;
1188 static const char *multilib_matches;
1189 static const char *multilib_defaults;
1190 static const char *multilib_exclusions;
1191 static const char *multilib_reuse;
1193 /* Check whether a particular argument is a default argument. */
1195 #ifndef MULTILIB_DEFAULTS
1196 #define MULTILIB_DEFAULTS { "" }
1199 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
1201 #ifndef DRIVER_SELF_SPECS
1202 #define DRIVER_SELF_SPECS ""
1205 /* Linking to libgomp implies pthreads. This is particularly important
1206 for targets that use different start files and suchlike. */
1207 #ifndef GOMP_SELF_SPECS
1208 #define GOMP_SELF_SPECS \
1209 "%{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1): " \
1213 /* Likewise for -fgnu-tm. */
1214 #ifndef GTM_SELF_SPECS
1215 #define GTM_SELF_SPECS "%{fgnu-tm: -pthread}"
1218 static const char *const driver_self_specs[] = {
1219 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
1220 DRIVER_SELF_SPECS, CONFIGURE_SPECS, GOMP_SELF_SPECS, GTM_SELF_SPECS
1223 #ifndef OPTION_DEFAULT_SPECS
1224 #define OPTION_DEFAULT_SPECS { "", "" }
1233 static const struct default_spec
1234 option_default_specs[] = { OPTION_DEFAULT_SPECS };
1238 struct user_specs *next;
1239 const char *filename;
1242 static struct user_specs *user_specs_head, *user_specs_tail;
1245 /* Record the mapping from file suffixes for compilation specs. */
1249 const char *suffix; /* Use this compiler for input files
1250 whose names end in this suffix. */
1252 const char *spec; /* To use this compiler, run this spec. */
1254 const char *cpp_spec; /* If non-NULL, substitute this spec
1255 for `%C', rather than the usual
1257 int combinable; /* If nonzero, compiler can deal with
1258 multiple source files at once (IMA). */
1259 int needs_preprocessing; /* If nonzero, source files need to
1260 be run through a preprocessor. */
1263 /* Pointer to a vector of `struct compiler' that gives the spec for
1264 compiling a file, based on its suffix.
1265 A file that does not end in any of these suffixes will be passed
1266 unchanged to the loader and nothing else will be done to it.
1268 An entry containing two 0s is used to terminate the vector.
1270 If multiple entries match a file, the last matching one is used. */
1272 static struct compiler *compilers;
1274 /* Number of entries in `compilers', not counting the null terminator. */
1276 static int n_compilers;
1278 /* The default list of file name suffixes and their compilation specs. */
1280 static const struct compiler default_compilers[] =
1282 /* Add lists of suffixes of known languages here. If those languages
1283 were not present when we built the driver, we will hit these copies
1284 and be given a more meaningful error than "file not used since
1285 linking is not done". */
1286 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
1287 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
1288 {".mii", "#Objective-C++", 0, 0, 0},
1289 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
1290 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
1291 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
1292 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
1293 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
1294 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
1295 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
1296 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
1297 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
1298 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
1299 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
1300 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
1301 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
1302 {".r", "#Ratfor", 0, 0, 0},
1303 {".go", "#Go", 0, 1, 0},
1304 /* Next come the entries for C. */
1305 {".c", "@c", 0, 0, 1},
1307 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1308 external preprocessor if -save-temps is given. */
1309 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1312 %eGNU C no longer supports -traditional without -E}\
1313 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1314 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1315 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1317 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1318 cc1 %(cpp_unique_options) %(cc1_options)}}}\
1319 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
1321 "%{!E:%e-E or -x required when input is from standard input}\
1322 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
1323 {".h", "@c-header", 0, 0, 0},
1325 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1326 external preprocessor if -save-temps is given. */
1327 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1329 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1330 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1331 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1333 %{!fsyntax-only:%{!S:-o %g.s} \
1334 %{!fdump-ada-spec*:%{!o*:--output-pch=%i.gch}\
1335 %W{o*:--output-pch=%*}}%V}}\
1336 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1337 cc1 %(cpp_unique_options) %(cc1_options)\
1338 %{!fsyntax-only:%{!S:-o %g.s} \
1339 %{!fdump-ada-spec*:%{!o*:--output-pch=%i.gch}\
1340 %W{o*:--output-pch=%*}}%V}}}}}}}", 0, 0, 0},
1341 {".i", "@cpp-output", 0, 0, 0},
1343 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
1344 {".s", "@assembler", 0, 0, 0},
1346 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
1347 {".sx", "@assembler-with-cpp", 0, 0, 0},
1348 {".S", "@assembler-with-cpp", 0, 0, 0},
1349 {"@assembler-with-cpp",
1350 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
1351 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1352 %{E|M|MM:%(cpp_debug_options)}\
1353 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1354 as %(asm_debug) %(asm_options) %|.s %A }}}}"
1356 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1357 %{E|M|MM:%(cpp_debug_options)}\
1358 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1359 as %(asm_debug) %(asm_options) %m.s %A }}}}"
1364 /* Mark end of table. */
1368 /* Number of elements in default_compilers, not counting the terminator. */
1370 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
1372 typedef char *char_p; /* For DEF_VEC_P. */
1374 /* A vector of options to give to the linker.
1375 These options are accumulated by %x,
1376 and substituted into the linker command with %X. */
1377 static vec<char_p> linker_options;
1379 /* A vector of options to give to the assembler.
1380 These options are accumulated by -Wa,
1381 and substituted into the assembler command with %Y. */
1382 static vec<char_p> assembler_options;
1384 /* A vector of options to give to the preprocessor.
1385 These options are accumulated by -Wp,
1386 and substituted into the preprocessor command with %Z. */
1387 static vec<char_p> preprocessor_options;
1390 skip_whitespace (char *p)
1394 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1395 be considered whitespace. */
1396 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1398 else if (*p == '\n' || *p == ' ' || *p == '\t')
1412 /* Structures to keep track of prefixes to try when looking for files. */
1416 const char *prefix; /* String to prepend to the path. */
1417 struct prefix_list *next; /* Next in linked list. */
1418 int require_machine_suffix; /* Don't use without machine_suffix. */
1419 /* 2 means try both machine_suffix and just_machine_suffix. */
1420 int priority; /* Sort key - priority within list. */
1421 int os_multilib; /* 1 if OS multilib scheme should be used,
1422 0 for GCC multilib scheme. */
1427 struct prefix_list *plist; /* List of prefixes to try */
1428 int max_len; /* Max length of a prefix in PLIST */
1429 const char *name; /* Name of this list (used in config stuff) */
1432 /* List of prefixes to try when looking for executables. */
1434 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1436 /* List of prefixes to try when looking for startup (crt0) files. */
1438 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1440 /* List of prefixes to try when looking for include files. */
1442 static struct path_prefix include_prefixes = { 0, 0, "include" };
1444 /* Suffix to attach to directories searched for commands.
1445 This looks like `MACHINE/VERSION/'. */
1447 static const char *machine_suffix = 0;
1449 /* Suffix to attach to directories searched for commands.
1450 This is just `MACHINE/'. */
1452 static const char *just_machine_suffix = 0;
1454 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1456 static const char *gcc_exec_prefix;
1458 /* Adjusted value of standard_libexec_prefix. */
1460 static const char *gcc_libexec_prefix;
1462 /* Default prefixes to attach to command names. */
1464 #ifndef STANDARD_STARTFILE_PREFIX_1
1465 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1467 #ifndef STANDARD_STARTFILE_PREFIX_2
1468 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1471 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1472 #undef MD_EXEC_PREFIX
1473 #undef MD_STARTFILE_PREFIX
1474 #undef MD_STARTFILE_PREFIX_1
1477 /* If no prefixes defined, use the null string, which will disable them. */
1478 #ifndef MD_EXEC_PREFIX
1479 #define MD_EXEC_PREFIX ""
1481 #ifndef MD_STARTFILE_PREFIX
1482 #define MD_STARTFILE_PREFIX ""
1484 #ifndef MD_STARTFILE_PREFIX_1
1485 #define MD_STARTFILE_PREFIX_1 ""
1488 /* These directories are locations set at configure-time based on the
1489 --prefix option provided to configure. Their initializers are
1490 defined in Makefile.in. These paths are not *directly* used when
1491 gcc_exec_prefix is set because, in that case, we know where the
1492 compiler has been installed, and use paths relative to that
1493 location instead. */
1494 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1495 static const char *const standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1496 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1497 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1499 /* For native compilers, these are well-known paths containing
1500 components that may be provided by the system. For cross
1501 compilers, these paths are not used. */
1502 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1503 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1504 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1505 static const char *const standard_startfile_prefix_1
1506 = STANDARD_STARTFILE_PREFIX_1;
1507 static const char *const standard_startfile_prefix_2
1508 = STANDARD_STARTFILE_PREFIX_2;
1510 /* A relative path to be used in finding the location of tools
1511 relative to the driver. */
1512 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1514 /* A prefix to be used when this is an accelerator compiler. */
1515 static const char *const accel_dir_suffix = ACCEL_DIR_SUFFIX;
1517 /* Subdirectory to use for locating libraries. Set by
1518 set_multilib_dir based on the compilation options. */
1520 static const char *multilib_dir;
1522 /* Subdirectory to use for locating libraries in OS conventions. Set by
1523 set_multilib_dir based on the compilation options. */
1525 static const char *multilib_os_dir;
1527 /* Subdirectory to use for locating libraries in multiarch conventions. Set by
1528 set_multilib_dir based on the compilation options. */
1530 static const char *multiarch_dir;
1532 /* Structure to keep track of the specs that have been defined so far.
1533 These are accessed using %(specname) in a compiler or link
1538 /* The following 2 fields must be first */
1539 /* to allow EXTRA_SPECS to be initialized */
1540 const char *name; /* name of the spec. */
1541 const char *ptr; /* available ptr if no static pointer */
1543 /* The following fields are not initialized */
1544 /* by EXTRA_SPECS */
1545 const char **ptr_spec; /* pointer to the spec itself. */
1546 struct spec_list *next; /* Next spec in linked list. */
1547 int name_len; /* length of the name */
1548 bool user_p; /* whether string come from file spec. */
1549 bool alloc_p; /* whether string was allocated */
1550 const char *default_ptr; /* The default value of *ptr_spec. */
1553 #define INIT_STATIC_SPEC(NAME,PTR) \
1554 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, false, false, \
1557 /* List of statically defined specs. */
1558 static struct spec_list static_specs[] =
1560 INIT_STATIC_SPEC ("asm", &asm_spec),
1561 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1562 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1563 INIT_STATIC_SPEC ("asm_options", &asm_options),
1564 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1565 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1566 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1567 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1568 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1569 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1570 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1571 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1572 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1573 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1574 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec),
1575 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1576 INIT_STATIC_SPEC ("link", &link_spec),
1577 INIT_STATIC_SPEC ("lib", &lib_spec),
1578 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec),
1579 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1580 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1581 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1582 INIT_STATIC_SPEC ("version", &compiler_version),
1583 INIT_STATIC_SPEC ("multilib", &multilib_select),
1584 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1585 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1586 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1587 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1588 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1589 INIT_STATIC_SPEC ("multilib_reuse", &multilib_reuse),
1590 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1591 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec),
1592 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec),
1593 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec),
1594 INIT_STATIC_SPEC ("post_link", &post_link_spec),
1595 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1596 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1597 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1598 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1599 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1600 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec),
1601 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1602 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1603 INIT_STATIC_SPEC ("self_spec", &self_spec),
1606 #ifdef EXTRA_SPECS /* additional specs needed */
1607 /* Structure to keep track of just the first two args of a spec_list.
1608 That is all that the EXTRA_SPECS macro gives us. */
1611 const char *const name;
1612 const char *const ptr;
1615 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1616 static struct spec_list *extra_specs = (struct spec_list *) 0;
1619 /* List of dynamically allocates specs that have been defined so far. */
1621 static struct spec_list *specs = (struct spec_list *) 0;
1623 /* List of static spec functions. */
1625 static const struct spec_function static_spec_functions[] =
1627 { "getenv", getenv_spec_function },
1628 { "if-exists", if_exists_spec_function },
1629 { "if-exists-else", if_exists_else_spec_function },
1630 { "sanitize", sanitize_spec_function },
1631 { "replace-outfile", replace_outfile_spec_function },
1632 { "remove-outfile", remove_outfile_spec_function },
1633 { "version-compare", version_compare_spec_function },
1634 { "include", include_spec_function },
1635 { "find-file", find_file_spec_function },
1636 { "find-plugindir", find_plugindir_spec_function },
1637 { "print-asm-header", print_asm_header_spec_function },
1638 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function },
1639 { "compare-debug-self-opt", compare_debug_self_opt_spec_function },
1640 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function },
1641 { "pass-through-libs", pass_through_libs_spec_func },
1642 { "replace-extension", replace_extension_spec_func },
1643 { "gt", greater_than_spec_func },
1644 { "debug-level-gt", debug_level_greater_than_spec_func },
1645 #ifdef EXTRA_SPEC_FUNCTIONS
1646 EXTRA_SPEC_FUNCTIONS
1651 static int processing_spec_function;
1653 /* Add appropriate libgcc specs to OBSTACK, taking into account
1654 various permutations of -shared-libgcc, -shared, and such. */
1656 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1658 #ifndef USE_LD_AS_NEEDED
1659 #define USE_LD_AS_NEEDED 0
1663 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1664 const char *static_name, const char *eh_name)
1668 #if USE_LD_AS_NEEDED
1669 buf = concat ("%{static|static-libgcc|static-pie:", static_name, " ", eh_name, "}"
1670 "%{!static:%{!static-libgcc:%{!static-pie:"
1671 "%{!shared-libgcc:",
1672 static_name, " " LD_AS_NEEDED_OPTION " ",
1673 shared_name, " " LD_NO_AS_NEEDED_OPTION
1676 shared_name, "%{!shared: ", static_name, "}"
1679 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}"
1680 "%{!static:%{!static-libgcc:"
1682 "%{!shared-libgcc:", static_name, " ", eh_name, "}"
1683 "%{shared-libgcc:", shared_name, " ", static_name, "}"
1687 "%{shared-libgcc:", shared_name, "}"
1688 "%{!shared-libgcc:", static_name, "}"
1691 "%{shared:", shared_name, "}"
1696 obstack_grow (obstack, buf, strlen (buf));
1699 #endif /* ENABLE_SHARED_LIBGCC */
1701 /* Initialize the specs lookup routines. */
1706 struct spec_list *next = (struct spec_list *) 0;
1707 struct spec_list *sl = (struct spec_list *) 0;
1711 return; /* Already initialized. */
1714 fnotice (stderr, "Using built-in specs.\n");
1717 extra_specs = XCNEWVEC (struct spec_list, ARRAY_SIZE (extra_specs_1));
1719 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1721 sl = &extra_specs[i];
1722 sl->name = extra_specs_1[i].name;
1723 sl->ptr = extra_specs_1[i].ptr;
1725 sl->name_len = strlen (sl->name);
1726 sl->ptr_spec = &sl->ptr;
1727 gcc_assert (sl->ptr_spec != NULL);
1728 sl->default_ptr = sl->ptr;
1733 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1735 sl = &static_specs[i];
1740 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1741 /* ??? If neither -shared-libgcc nor --static-libgcc was
1742 seen, then we should be making an educated guess. Some proposed
1743 heuristics for ELF include:
1745 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1746 program will be doing dynamic loading, which will likely
1747 need the shared libgcc.
1749 (2) If "-ldl", then it's also a fair bet that we're doing
1752 (3) For each ET_DYN we're linking against (either through -lfoo
1753 or /some/path/foo.so), check to see whether it or one of
1754 its dependencies depends on a shared libgcc.
1758 If the runtime is fixed to look for program headers instead
1759 of calling __register_frame_info at all, for each object,
1760 use the shared libgcc if any EH symbol referenced.
1762 If crtstuff is fixed to not invoke __register_frame_info
1763 automatically, for each object, use the shared libgcc if
1764 any non-empty unwind section found.
1766 Doing any of this probably requires invoking an external program to
1767 do the actual object file scanning. */
1769 const char *p = libgcc_spec;
1772 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1773 when given the proper command line arguments. */
1776 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1778 init_gcc_specs (&obstack,
1780 #ifdef USE_LIBUNWIND_EXCEPTIONS
1786 #ifdef USE_LIBUNWIND_EXCEPTIONS
1787 # ifdef HAVE_LD_STATIC_DYNAMIC
1788 " %{!static:%{!static-pie:" LD_STATIC_OPTION "}} -lunwind"
1789 " %{!static:%{!static-pie:" LD_DYNAMIC_OPTION "}}"
1799 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1801 /* Ug. We don't know shared library extensions. Hope that
1802 systems that use this form don't do shared libraries. */
1803 init_gcc_specs (&obstack,
1807 #ifdef USE_LIBUNWIND_EXCEPTIONS
1816 obstack_1grow (&obstack, *p);
1817 in_sep = (*p == ' ');
1822 obstack_1grow (&obstack, '\0');
1823 libgcc_spec = XOBFINISH (&obstack, const char *);
1826 #ifdef USE_AS_TRADITIONAL_FORMAT
1827 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1829 static const char tf[] = "--traditional-format ";
1830 obstack_grow (&obstack, tf, sizeof (tf) - 1);
1831 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1832 asm_spec = XOBFINISH (&obstack, const char *);
1836 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \
1837 defined LINKER_HASH_STYLE
1838 # ifdef LINK_BUILDID_SPEC
1839 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1840 obstack_grow (&obstack, LINK_BUILDID_SPEC, sizeof (LINK_BUILDID_SPEC) - 1);
1842 # ifdef LINK_EH_SPEC
1843 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1844 obstack_grow (&obstack, LINK_EH_SPEC, sizeof (LINK_EH_SPEC) - 1);
1846 # ifdef LINKER_HASH_STYLE
1847 /* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had
1850 static const char hash_style[] = "--hash-style=";
1851 obstack_grow (&obstack, hash_style, sizeof (hash_style) - 1);
1852 obstack_grow (&obstack, LINKER_HASH_STYLE, sizeof (LINKER_HASH_STYLE) - 1);
1853 obstack_1grow (&obstack, ' ');
1856 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1857 link_spec = XOBFINISH (&obstack, const char *);
1863 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1864 removed; If the spec starts with a + then SPEC is added to the end of the
1868 set_spec (const char *name, const char *spec, bool user_p)
1870 struct spec_list *sl;
1871 const char *old_spec;
1872 int name_len = strlen (name);
1875 /* If this is the first call, initialize the statically allocated specs. */
1878 struct spec_list *next = (struct spec_list *) 0;
1879 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1881 sl = &static_specs[i];
1888 /* See if the spec already exists. */
1889 for (sl = specs; sl; sl = sl->next)
1890 if (name_len == sl->name_len && !strcmp (sl->name, name))
1895 /* Not found - make it. */
1896 sl = XNEW (struct spec_list);
1897 sl->name = xstrdup (name);
1898 sl->name_len = name_len;
1899 sl->ptr_spec = &sl->ptr;
1901 *(sl->ptr_spec) = "";
1903 sl->default_ptr = NULL;
1907 old_spec = *(sl->ptr_spec);
1908 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1909 ? concat (old_spec, spec + 1, NULL)
1914 fnotice (stderr, "Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1917 /* Free the old spec. */
1918 if (old_spec && sl->alloc_p)
1919 free (CONST_CAST (char *, old_spec));
1921 sl->user_p = user_p;
1925 /* Accumulate a command (program name and args), and run it. */
1927 typedef const char *const_char_p; /* For DEF_VEC_P. */
1929 /* Vector of pointers to arguments in the current line of specifications. */
1931 static vec<const_char_p> argbuf;
1933 /* Were the options -c, -S or -E passed. */
1934 static int have_c = 0;
1936 /* Was the option -o passed. */
1937 static int have_o = 0;
1939 /* Was the option -E passed. */
1940 static int have_E = 0;
1942 /* Pointer to output file name passed in with -o. */
1943 static const char *output_file = 0;
1945 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1946 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1949 static struct temp_name {
1950 const char *suffix; /* suffix associated with the code. */
1951 int length; /* strlen (suffix). */
1952 int unique; /* Indicates whether %g or %u/%U was used. */
1953 const char *filename; /* associated filename. */
1954 int filename_length; /* strlen (filename). */
1955 struct temp_name *next;
1958 /* Number of commands executed so far. */
1960 static int execution_count;
1962 /* Number of commands that exited with a signal. */
1964 static int signal_count;
1966 /* Allocate the argument vector. */
1974 /* Clear out the vector of arguments (after a command is executed). */
1979 argbuf.truncate (0);
1982 /* Add one argument to the vector at the end.
1983 This is done when a space is seen or at the end of the line.
1984 If DELETE_ALWAYS is nonzero, the arg is a filename
1985 and the file should be deleted eventually.
1986 If DELETE_FAILURE is nonzero, the arg is a filename
1987 and the file should be deleted if this compilation fails. */
1990 store_arg (const char *arg, int delete_always, int delete_failure)
1992 argbuf.safe_push (arg);
1994 if (delete_always || delete_failure)
1997 /* If the temporary file we should delete is specified as
1998 part of a joined argument extract the filename. */
2000 && (p = strrchr (arg, '=')))
2002 record_temp_file (arg, delete_always, delete_failure);
2006 /* Load specs from a file name named FILENAME, replacing occurrences of
2007 various different types of line-endings, \r\n, \n\r and just \r, with
2011 load_specs (const char *filename)
2015 struct stat statbuf;
2022 fnotice (stderr, "Reading specs from %s\n", filename);
2024 /* Open and stat the file. */
2025 desc = open (filename, O_RDONLY, 0);
2027 pfatal_with_name (filename);
2028 if (stat (filename, &statbuf) < 0)
2029 pfatal_with_name (filename);
2031 /* Read contents of file into BUFFER. */
2032 buffer = XNEWVEC (char, statbuf.st_size + 1);
2033 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
2035 pfatal_with_name (filename);
2036 buffer[readlen] = 0;
2039 specs = XNEWVEC (char, readlen + 1);
2041 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
2047 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
2049 else if (*(buffer_p + 1) == '\n') /* \r\n */
2063 /* Read compilation specs from a file named FILENAME,
2064 replacing the default ones.
2066 A suffix which starts with `*' is a definition for
2067 one of the machine-specific sub-specs. The "suffix" should be
2068 *asm, *cc1, *cpp, *link, *startfile, etc.
2069 The corresponding spec is stored in asm_spec, etc.,
2070 rather than in the `compilers' vector.
2072 Anything invalid in the file is a fatal error. */
2075 read_specs (const char *filename, bool main_p, bool user_p)
2080 buffer = load_specs (filename);
2082 /* Scan BUFFER for specs, putting them in the vector. */
2088 char *in, *out, *p1, *p2, *p3;
2090 /* Advance P in BUFFER to the next nonblank nocomment line. */
2091 p = skip_whitespace (p);
2095 /* Is this a special command that starts with '%'? */
2096 /* Don't allow this for the main specs file, since it would
2097 encourage people to overwrite it. */
2098 if (*p == '%' && !main_p)
2101 while (*p && *p != '\n')
2107 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
2108 && (p1[sizeof "%include" - 1] == ' '
2109 || p1[sizeof "%include" - 1] == '\t'))
2113 p1 += sizeof ("%include");
2114 while (*p1 == ' ' || *p1 == '\t')
2117 if (*p1++ != '<' || p[-2] != '>')
2118 fatal_error (input_location,
2119 "specs %%include syntax malformed after "
2121 (long) (p1 - buffer + 1));
2124 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
2125 read_specs (new_filename ? new_filename : p1, false, user_p);
2128 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
2129 && (p1[sizeof "%include_noerr" - 1] == ' '
2130 || p1[sizeof "%include_noerr" - 1] == '\t'))
2134 p1 += sizeof "%include_noerr";
2135 while (*p1 == ' ' || *p1 == '\t')
2138 if (*p1++ != '<' || p[-2] != '>')
2139 fatal_error (input_location,
2140 "specs %%include syntax malformed after "
2142 (long) (p1 - buffer + 1));
2145 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
2147 read_specs (new_filename, false, user_p);
2148 else if (verbose_flag)
2149 fnotice (stderr, "could not find specs file %s\n", p1);
2152 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
2153 && (p1[sizeof "%rename" - 1] == ' '
2154 || p1[sizeof "%rename" - 1] == '\t'))
2157 struct spec_list *sl;
2158 struct spec_list *newsl;
2160 /* Get original name. */
2161 p1 += sizeof "%rename";
2162 while (*p1 == ' ' || *p1 == '\t')
2165 if (! ISALPHA ((unsigned char) *p1))
2166 fatal_error (input_location,
2167 "specs %%rename syntax malformed after "
2169 (long) (p1 - buffer));
2172 while (*p2 && !ISSPACE ((unsigned char) *p2))
2175 if (*p2 != ' ' && *p2 != '\t')
2176 fatal_error (input_location,
2177 "specs %%rename syntax malformed after "
2179 (long) (p2 - buffer));
2183 while (*p2 == ' ' || *p2 == '\t')
2186 if (! ISALPHA ((unsigned char) *p2))
2187 fatal_error (input_location,
2188 "specs %%rename syntax malformed after "
2190 (long) (p2 - buffer));
2192 /* Get new spec name. */
2194 while (*p3 && !ISSPACE ((unsigned char) *p3))
2198 fatal_error (input_location,
2199 "specs %%rename syntax malformed after "
2201 (long) (p3 - buffer));
2204 for (sl = specs; sl; sl = sl->next)
2205 if (name_len == sl->name_len && !strcmp (sl->name, p1))
2209 fatal_error (input_location,
2210 "specs %s spec was not found to be renamed", p1);
2212 if (strcmp (p1, p2) == 0)
2215 for (newsl = specs; newsl; newsl = newsl->next)
2216 if (strcmp (newsl->name, p2) == 0)
2217 fatal_error (input_location,
2218 "%s: attempt to rename spec %qs to "
2219 "already defined spec %qs",
2224 fnotice (stderr, "rename spec %s to %s\n", p1, p2);
2226 fnotice (stderr, "spec is '%s'\n\n", *(sl->ptr_spec));
2230 set_spec (p2, *(sl->ptr_spec), user_p);
2232 free (CONST_CAST (char *, *(sl->ptr_spec)));
2234 *(sl->ptr_spec) = "";
2239 fatal_error (input_location,
2240 "specs unknown %% command after %ld characters",
2241 (long) (p1 - buffer));
2244 /* Find the colon that should end the suffix. */
2246 while (*p1 && *p1 != ':' && *p1 != '\n')
2249 /* The colon shouldn't be missing. */
2251 fatal_error (input_location,
2252 "specs file malformed after %ld characters",
2253 (long) (p1 - buffer));
2255 /* Skip back over trailing whitespace. */
2257 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
2260 /* Copy the suffix to a string. */
2261 suffix = save_string (p, p2 - p);
2262 /* Find the next line. */
2263 p = skip_whitespace (p1 + 1);
2265 fatal_error (input_location,
2266 "specs file malformed after %ld characters",
2267 (long) (p - buffer));
2270 /* Find next blank line or end of string. */
2271 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
2274 /* Specs end at the blank line and do not include the newline. */
2275 spec = save_string (p, p1 - p);
2278 /* Delete backslash-newline sequences from the spec. */
2283 if (in[0] == '\\' && in[1] == '\n')
2285 else if (in[0] == '#')
2286 while (*in && *in != '\n')
2294 if (suffix[0] == '*')
2296 if (! strcmp (suffix, "*link_command"))
2297 link_command_spec = spec;
2300 set_spec (suffix + 1, spec, user_p);
2306 /* Add this pair to the vector. */
2308 = XRESIZEVEC (struct compiler, compilers, n_compilers + 2);
2310 compilers[n_compilers].suffix = suffix;
2311 compilers[n_compilers].spec = spec;
2313 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2317 link_command_spec = spec;
2320 if (link_command_spec == 0)
2321 fatal_error (input_location, "spec file has no spec for linking");
2323 XDELETEVEC (buffer);
2326 /* Record the names of temporary files we tell compilers to write,
2327 and delete them at the end of the run. */
2329 /* This is the common prefix we use to make temp file names.
2330 It is chosen once for each run of this program.
2331 It is substituted into a spec by %g or %j.
2332 Thus, all temp file names contain this prefix.
2333 In practice, all temp file names start with this prefix.
2335 This prefix comes from the envvar TMPDIR if it is defined;
2336 otherwise, from the P_tmpdir macro if that is defined;
2337 otherwise, in /usr/tmp or /tmp;
2338 or finally the current directory if all else fails. */
2340 static const char *temp_filename;
2342 /* Length of the prefix. */
2344 static int temp_filename_length;
2346 /* Define the list of temporary files to delete. */
2351 struct temp_file *next;
2354 /* Queue of files to delete on success or failure of compilation. */
2355 static struct temp_file *always_delete_queue;
2356 /* Queue of files to delete on failure of compilation. */
2357 static struct temp_file *failure_delete_queue;
2359 /* Record FILENAME as a file to be deleted automatically.
2360 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2361 otherwise delete it in any case.
2362 FAIL_DELETE nonzero means delete it if a compilation step fails;
2363 otherwise delete it in any case. */
2366 record_temp_file (const char *filename, int always_delete, int fail_delete)
2368 char *const name = xstrdup (filename);
2372 struct temp_file *temp;
2373 for (temp = always_delete_queue; temp; temp = temp->next)
2374 if (! filename_cmp (name, temp->name))
2380 temp = XNEW (struct temp_file);
2381 temp->next = always_delete_queue;
2383 always_delete_queue = temp;
2390 struct temp_file *temp;
2391 for (temp = failure_delete_queue; temp; temp = temp->next)
2392 if (! filename_cmp (name, temp->name))
2398 temp = XNEW (struct temp_file);
2399 temp->next = failure_delete_queue;
2401 failure_delete_queue = temp;
2407 /* Delete all the temporary files whose names we previously recorded. */
2409 #ifndef DELETE_IF_ORDINARY
2410 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2413 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2414 if (unlink (NAME) < 0) \
2416 perror_with_name (NAME); \
2421 delete_if_ordinary (const char *name)
2427 printf ("Delete %s? (y or n) ", name);
2431 while ((c = getchar ()) != '\n' && c != EOF)
2434 if (i == 'y' || i == 'Y')
2436 DELETE_IF_ORDINARY (name, st, verbose_flag);
2440 delete_temp_files (void)
2442 struct temp_file *temp;
2444 for (temp = always_delete_queue; temp; temp = temp->next)
2445 delete_if_ordinary (temp->name);
2446 always_delete_queue = 0;
2449 /* Delete all the files to be deleted on error. */
2452 delete_failure_queue (void)
2454 struct temp_file *temp;
2456 for (temp = failure_delete_queue; temp; temp = temp->next)
2457 delete_if_ordinary (temp->name);
2461 clear_failure_queue (void)
2463 failure_delete_queue = 0;
2466 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2468 If DO_MULTI is true iterate over the paths twice, first with multilib
2469 suffix then without, otherwise iterate over the paths once without
2470 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2471 to avoid visiting the same path twice, but we could do better. For
2472 instance, /usr/lib/../lib is considered different from /usr/lib.
2473 At least EXTRA_SPACE chars past the end of the path passed to
2474 CALLBACK are available for use by the callback.
2475 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2477 Returns the value returned by CALLBACK. */
2480 for_each_path (const struct path_prefix *paths,
2483 void *(*callback) (char *, void *),
2484 void *callback_info)
2486 struct prefix_list *pl;
2487 const char *multi_dir = NULL;
2488 const char *multi_os_dir = NULL;
2489 const char *multiarch_suffix = NULL;
2490 const char *multi_suffix;
2491 const char *just_multi_suffix;
2494 bool skip_multi_dir = false;
2495 bool skip_multi_os_dir = false;
2497 multi_suffix = machine_suffix;
2498 just_multi_suffix = just_machine_suffix;
2499 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0)
2501 multi_dir = concat (multilib_dir, dir_separator_str, NULL);
2502 multi_suffix = concat (multi_suffix, multi_dir, NULL);
2503 just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL);
2505 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0)
2506 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL);
2508 multiarch_suffix = concat (multiarch_dir, dir_separator_str, NULL);
2512 size_t multi_dir_len = 0;
2513 size_t multi_os_dir_len = 0;
2514 size_t multiarch_len = 0;
2516 size_t just_suffix_len;
2520 multi_dir_len = strlen (multi_dir);
2522 multi_os_dir_len = strlen (multi_os_dir);
2523 if (multiarch_suffix)
2524 multiarch_len = strlen (multiarch_suffix);
2525 suffix_len = strlen (multi_suffix);
2526 just_suffix_len = strlen (just_multi_suffix);
2530 len = paths->max_len + extra_space + 1;
2531 len += MAX (MAX (suffix_len, multi_os_dir_len), multiarch_len);
2532 path = XNEWVEC (char, len);
2535 for (pl = paths->plist; pl != 0; pl = pl->next)
2537 len = strlen (pl->prefix);
2538 memcpy (path, pl->prefix, len);
2540 #if 0 /* DragonFly base: MACHINE/VERSION isn't used anywhere */
2541 /* Look first in MACHINE/VERSION subdirectory. */
2542 if (!skip_multi_dir)
2544 memcpy (path + len, multi_suffix, suffix_len + 1);
2545 ret = callback (path, callback_info);
2551 /* Some paths are tried with just the machine (ie. target)
2552 subdir. This is used for finding as, ld, etc. */
2554 && pl->require_machine_suffix == 2)
2556 memcpy (path + len, just_multi_suffix, just_suffix_len + 1);
2557 ret = callback (path, callback_info);
2562 /* Now try the multiarch path. */
2564 && !pl->require_machine_suffix && multiarch_dir)
2566 memcpy (path + len, multiarch_suffix, multiarch_len + 1);
2567 ret = callback (path, callback_info);
2572 /* Now try the base path. */
2573 if (!pl->require_machine_suffix
2574 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir))
2576 const char *this_multi;
2577 size_t this_multi_len;
2579 if (pl->os_multilib)
2581 this_multi = multi_os_dir;
2582 this_multi_len = multi_os_dir_len;
2586 this_multi = multi_dir;
2587 this_multi_len = multi_dir_len;
2591 memcpy (path + len, this_multi, this_multi_len + 1);
2595 ret = callback (path, callback_info);
2603 if (multi_dir == NULL && multi_os_dir == NULL)
2606 /* Run through the paths again, this time without multilibs.
2607 Don't repeat any we have already seen. */
2610 free (CONST_CAST (char *, multi_dir));
2612 free (CONST_CAST (char *, multi_suffix));
2613 multi_suffix = machine_suffix;
2614 free (CONST_CAST (char *, just_multi_suffix));
2615 just_multi_suffix = just_machine_suffix;
2618 skip_multi_dir = true;
2621 free (CONST_CAST (char *, multi_os_dir));
2622 multi_os_dir = NULL;
2625 skip_multi_os_dir = true;
2630 free (CONST_CAST (char *, multi_dir));
2631 free (CONST_CAST (char *, multi_suffix));
2632 free (CONST_CAST (char *, just_multi_suffix));
2635 free (CONST_CAST (char *, multi_os_dir));
2641 /* Callback for build_search_list. Adds path to obstack being built. */
2643 struct add_to_obstack_info {
2650 add_to_obstack (char *path, void *data)
2652 struct add_to_obstack_info *info = (struct add_to_obstack_info *) data;
2654 if (info->check_dir && !is_directory (path, false))
2657 if (!info->first_time)
2658 obstack_1grow (info->ob, PATH_SEPARATOR);
2660 obstack_grow (info->ob, path, strlen (path));
2662 info->first_time = false;
2666 /* Add or change the value of an environment variable, outputting the
2667 change to standard error if in verbose mode. */
2669 xputenv (const char *string)
2674 /* Build a list of search directories from PATHS.
2675 PREFIX is a string to prepend to the list.
2676 If CHECK_DIR_P is true we ensure the directory exists.
2677 If DO_MULTI is true, multilib paths are output first, then
2679 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2680 It is also used by the --print-search-dirs flag. */
2683 build_search_list (const struct path_prefix *paths, const char *prefix,
2684 bool check_dir, bool do_multi)
2686 struct add_to_obstack_info info;
2688 info.ob = &collect_obstack;
2689 info.check_dir = check_dir;
2690 info.first_time = true;
2692 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2693 obstack_1grow (&collect_obstack, '=');
2695 for_each_path (paths, do_multi, 0, add_to_obstack, &info);
2697 obstack_1grow (&collect_obstack, '\0');
2698 return XOBFINISH (&collect_obstack, char *);
2701 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2705 putenv_from_prefixes (const struct path_prefix *paths, const char *env_var,
2708 xputenv (build_search_list (paths, env_var, true, do_multi));
2711 /* Check whether NAME can be accessed in MODE. This is like access,
2712 except that it never considers directories to be executable. */
2715 access_check (const char *name, int mode)
2721 if (stat (name, &st) < 0
2722 || S_ISDIR (st.st_mode))
2726 return access (name, mode);
2729 /* Callback for find_a_file. Appends the file name to the directory
2730 path. If the resulting file exists in the right mode, return the
2731 full pathname to the file. */
2733 struct file_at_path_info {
2742 file_at_path (char *path, void *data)
2744 struct file_at_path_info *info = (struct file_at_path_info *) data;
2745 size_t len = strlen (path);
2747 memcpy (path + len, info->name, info->name_len);
2748 len += info->name_len;
2750 /* Some systems have a suffix for executable files.
2751 So try appending that first. */
2752 if (info->suffix_len)
2754 memcpy (path + len, info->suffix, info->suffix_len + 1);
2755 if (access_check (path, info->mode) == 0)
2760 if (access_check (path, info->mode) == 0)
2766 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2767 access to check permissions. If DO_MULTI is true, search multilib
2768 paths then non-multilib paths, otherwise do not search multilib paths.
2769 Return 0 if not found, otherwise return its name, allocated with malloc. */
2772 find_a_file (const struct path_prefix *pprefix, const char *name, int mode,
2775 struct file_at_path_info info;
2777 #ifdef DEFAULT_ASSEMBLER
2778 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2779 return xstrdup (DEFAULT_ASSEMBLER);
2782 #ifdef DEFAULT_LINKER
2783 if (! strcmp (name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2784 return xstrdup (DEFAULT_LINKER);
2787 /* Determine the filename to execute (special case for absolute paths). */
2789 if (IS_ABSOLUTE_PATH (name))
2791 if (access (name, mode) == 0)
2792 return xstrdup (name);
2798 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "";
2799 info.name_len = strlen (info.name);
2800 info.suffix_len = strlen (info.suffix);
2803 return (char*) for_each_path (pprefix, do_multi,
2804 info.name_len + info.suffix_len,
2805 file_at_path, &info);
2808 /* Ranking of prefixes in the sort list. -B prefixes are put before
2811 enum path_prefix_priority
2813 PREFIX_PRIORITY_B_OPT,
2814 PREFIX_PRIORITY_LAST
2817 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2818 order according to PRIORITY. Within each PRIORITY, new entries are
2821 If WARN is nonzero, we will warn if no file is found
2822 through this prefix. WARN should point to an int
2823 which will be set to 1 if this entry is used.
2825 COMPONENT is the value to be passed to update_path.
2827 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2828 the complete value of machine_suffix.
2829 2 means try both machine_suffix and just_machine_suffix. */
2832 add_prefix (struct path_prefix *pprefix, const char *prefix,
2833 const char *component, /* enum prefix_priority */ int priority,
2834 int require_machine_suffix, int os_multilib)
2836 struct prefix_list *pl, **prev;
2839 for (prev = &pprefix->plist;
2840 (*prev) != NULL && (*prev)->priority <= priority;
2841 prev = &(*prev)->next)
2844 /* Keep track of the longest prefix. */
2846 prefix = update_path (prefix, component);
2847 len = strlen (prefix);
2848 if (len > pprefix->max_len)
2849 pprefix->max_len = len;
2851 pl = XNEW (struct prefix_list);
2852 pl->prefix = prefix;
2853 pl->require_machine_suffix = require_machine_suffix;
2854 pl->priority = priority;
2855 pl->os_multilib = os_multilib;
2857 /* Insert after PREV. */
2862 /* Same as add_prefix, but prepending target_system_root to prefix. */
2863 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2865 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2866 const char *component,
2867 /* enum prefix_priority */ int priority,
2868 int require_machine_suffix, int os_multilib)
2870 if (!IS_ABSOLUTE_PATH (prefix))
2871 fatal_error (input_location, "system path %qs is not absolute", prefix);
2873 if (target_system_root)
2875 char *sysroot_no_trailing_dir_separator = xstrdup (target_system_root);
2876 size_t sysroot_len = strlen (target_system_root);
2879 && target_system_root[sysroot_len - 1] == DIR_SEPARATOR)
2880 sysroot_no_trailing_dir_separator[sysroot_len - 1] = '\0';
2882 if (target_sysroot_suffix)
2883 prefix = concat (sysroot_no_trailing_dir_separator,
2884 target_sysroot_suffix, prefix, NULL);
2886 prefix = concat (sysroot_no_trailing_dir_separator, prefix, NULL);
2888 free (sysroot_no_trailing_dir_separator);
2890 /* We have to override this because GCC's notion of sysroot
2891 moves along with GCC. */
2895 add_prefix (pprefix, prefix, component, priority,
2896 require_machine_suffix, os_multilib);
2899 /* Execute the command specified by the arguments on the current line of spec.
2900 When using pipes, this includes several piped-together commands
2901 with `|' between them.
2903 Return 0 if successful, -1 if failed. */
2909 int n_commands; /* # of command. */
2911 struct pex_obj *pex;
2914 const char *prog; /* program name. */
2915 const char **argv; /* vector of args. */
2919 struct command *commands; /* each command buffer with above info. */
2921 gcc_assert (!processing_spec_function);
2925 string = find_a_file (&exec_prefixes,
2926 argbuf[0], X_OK, false);
2929 insert_wrapper (wrapper_string);
2932 /* Count # of piped commands. */
2933 for (n_commands = 1, i = 0; argbuf.iterate (i, &arg); i++)
2934 if (strcmp (arg, "|") == 0)
2937 /* Get storage for each command. */
2938 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2940 /* Split argbuf into its separate piped processes,
2941 and record info about each one.
2942 Also search for the programs that are to be run. */
2944 argbuf.safe_push (0);
2946 commands[0].prog = argbuf[0]; /* first command. */
2947 commands[0].argv = argbuf.address ();
2949 if (!wrapper_string)
2951 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false);
2952 commands[0].argv[0] = (string) ? string : commands[0].argv[0];
2955 for (n_commands = 1, i = 0; argbuf.iterate (i, &arg); i++)
2956 if (arg && strcmp (arg, "|") == 0)
2957 { /* each command. */
2958 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2959 fatal_error (input_location, "-pipe not supported");
2961 argbuf[i] = 0; /* Termination of
2963 commands[n_commands].prog = argbuf[i + 1];
2964 commands[n_commands].argv
2965 = &(argbuf.address ())[i + 1];
2966 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2969 commands[n_commands].argv[0] = string;
2973 /* If -v, print what we are about to do, and maybe query. */
2977 /* For help listings, put a blank line between sub-processes. */
2978 if (print_help_list)
2979 fputc ('\n', stderr);
2981 /* Print each piped command as a separate line. */
2982 for (i = 0; i < n_commands; i++)
2984 const char *const *j;
2986 if (verbose_only_flag)
2988 for (j = commands[i].argv; *j; j++)
2991 for (p = *j; *p; ++p)
2992 if (!ISALNUM ((unsigned char) *p)
2993 && *p != '_' && *p != '/' && *p != '-' && *p != '.')
2997 fprintf (stderr, " \"");
2998 for (p = *j; *p; ++p)
3000 if (*p == '"' || *p == '\\' || *p == '$')
3001 fputc ('\\', stderr);
3004 fputc ('"', stderr);
3006 /* If it's empty, print "". */
3008 fprintf (stderr, " \"\"");
3010 fprintf (stderr, " %s", *j);
3014 for (j = commands[i].argv; *j; j++)
3015 /* If it's empty, print "". */
3017 fprintf (stderr, " \"\"");
3019 fprintf (stderr, " %s", *j);
3021 /* Print a pipe symbol after all but the last command. */
3022 if (i + 1 != n_commands)
3023 fprintf (stderr, " |");
3024 fprintf (stderr, "\n");
3027 if (verbose_only_flag != 0)
3029 /* verbose_only_flag should act as if the spec was
3030 executed, so increment execution_count before
3031 returning. This prevents spurious warnings about
3032 unused linker input files, etc. */
3037 fnotice (stderr, "\nGo ahead? (y or n) ");
3041 while (getchar () != '\n')
3044 if (i != 'y' && i != 'Y')
3049 #ifdef ENABLE_VALGRIND_CHECKING
3050 /* Run the each command through valgrind. To simplify prepending the
3051 path to valgrind and the option "-q" (for quiet operation unless
3052 something triggers), we allocate a separate argv array. */
3054 for (i = 0; i < n_commands; i++)
3060 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
3063 argv = XALLOCAVEC (const char *, argc + 3);
3065 argv[0] = VALGRIND_PATH;
3067 for (j = 2; j < argc + 2; j++)
3068 argv[j] = commands[i].argv[j - 2];
3071 commands[i].argv = argv;
3072 commands[i].prog = argv[0];
3076 /* Run each piped subprocess. */
3078 pex = pex_init (PEX_USE_PIPES | ((report_times || report_times_to_file)
3079 ? PEX_RECORD_TIMES : 0),
3080 progname, temp_filename);
3082 fatal_error (input_location, "pex_init failed: %m");
3084 for (i = 0; i < n_commands; i++)
3088 const char *string = commands[i].argv[0];
3090 errmsg = pex_run (pex,
3091 ((i + 1 == n_commands ? PEX_LAST : 0)
3092 | (string == commands[i].prog ? PEX_SEARCH : 0)),
3093 string, CONST_CAST (char **, commands[i].argv),
3098 fatal_error (input_location, errmsg);
3102 pfatal_with_name (errmsg);
3106 if (i && string != commands[i].prog)
3107 free (CONST_CAST (char *, string));
3112 /* Wait for all the subprocesses to finish. */
3116 struct pex_time *times = NULL;
3119 statuses = (int *) alloca (n_commands * sizeof (int));
3120 if (!pex_get_status (pex, n_commands, statuses))
3121 fatal_error (input_location, "failed to get exit status: %m");
3123 if (report_times || report_times_to_file)
3125 times = (struct pex_time *) alloca (n_commands * sizeof (struct pex_time));
3126 if (!pex_get_times (pex, n_commands, times))
3127 fatal_error (input_location, "failed to get process times: %m");
3132 for (i = 0; i < n_commands; ++i)
3134 int status = statuses[i];
3136 if (WIFSIGNALED (status))
3137 switch (WTERMSIG (status))
3141 /* SIGQUIT and SIGKILL are not available on MinGW. */
3148 /* The user (or environment) did something to the
3149 inferior. Making this an ICE confuses the user into
3150 thinking there's a compiler bug. Much more likely is
3151 the user or OOM killer nuked it. */
3152 fatal_error (input_location,
3153 "%s signal terminated program %s",
3154 strsignal (WTERMSIG (status)),
3160 /* SIGPIPE is a special case. It happens in -pipe mode
3161 when the compiler dies before the preprocessor is
3162 done, or the assembler dies before the compiler is
3163 done. There's generally been an error already, and
3164 this is just fallout. So don't generate another
3165 error unless we would otherwise have succeeded. */
3166 if (signal_count || greatest_status >= MIN_FATAL_STATUS)
3176 /* The inferior failed to catch the signal. */
3177 internal_error_no_backtrace ("%s signal terminated program %s",
3178 strsignal (WTERMSIG (status)),
3181 else if (WIFEXITED (status)
3182 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
3184 /* For ICEs in cc1, cc1obj, cc1plus see if it is
3185 reproducible or not. */
3188 && WEXITSTATUS (status) == ICE_EXIT_CODE
3190 && (p = strrchr (commands[0].argv[0], DIR_SEPARATOR))
3191 && ! strncmp (p + 1, "cc1", 3))
3192 try_generate_repro (commands[0].argv);
3193 if (WEXITSTATUS (status) > greatest_status)
3194 greatest_status = WEXITSTATUS (status);
3198 if (report_times || report_times_to_file)
3200 struct pex_time *pt = ×[i];
3203 ut = ((double) pt->user_seconds
3204 + (double) pt->user_microseconds / 1.0e6);
3205 st = ((double) pt->system_seconds
3206 + (double) pt->system_microseconds / 1.0e6);
3211 fnotice (stderr, "# %s %.2f %.2f\n",
3212 commands[i].prog, ut, st);
3214 if (report_times_to_file)
3217 const char *const *j;
3219 fprintf (report_times_to_file, "%g %g", ut, st);
3221 for (j = &commands[i].prog; *j; j = &commands[i].argv[++c])
3224 for (p = *j; *p; ++p)
3225 if (*p == '"' || *p == '\\' || *p == '$'
3231 fprintf (report_times_to_file, " \"");
3232 for (p = *j; *p; ++p)
3234 if (*p == '"' || *p == '\\' || *p == '$')
3235 fputc ('\\', report_times_to_file);
3236 fputc (*p, report_times_to_file);
3238 fputc ('"', report_times_to_file);
3241 fprintf (report_times_to_file, " %s", *j);
3244 fputc ('\n', report_times_to_file);
3250 if (commands[0].argv[0] != commands[0].prog)
3251 free (CONST_CAST (char *, commands[0].argv[0]));
3257 /* Find all the switches given to us
3258 and make a vector describing them.
3259 The elements of the vector are strings, one per switch given.
3260 If a switch uses following arguments, then the `part1' field
3261 is the switch itself and the `args' field
3262 is a null-terminated vector containing the following arguments.
3263 Bits in the `live_cond' field are:
3264 SWITCH_LIVE to indicate this switch is true in a conditional spec.
3265 SWITCH_FALSE to indicate this switch is overridden by a later switch.
3266 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
3267 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored.
3268 SWITCH_KEEP_FOR_GCC to indicate that this switch, otherwise ignored,
3269 should be included in COLLECT_GCC_OPTIONS.
3270 in all do_spec calls afterwards. Used for %<S from self specs.
3271 The `known' field describes whether this is an internal switch.
3272 The `validated' field describes whether any spec has looked at this switch;
3273 if it remains false at the end of the run, the switch must be meaningless.
3274 The `ordering' field is used to temporarily mark switches that have to be
3275 kept in a specific order. */
3277 #define SWITCH_LIVE (1 << 0)
3278 #define SWITCH_FALSE (1 << 1)
3279 #define SWITCH_IGNORE (1 << 2)
3280 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
3281 #define SWITCH_KEEP_FOR_GCC (1 << 4)
3287 unsigned int live_cond;
3293 static struct switchstr *switches;
3295 static int n_switches;
3297 static int n_switches_alloc;
3299 /* Set to zero if -fcompare-debug is disabled, positive if it's
3300 enabled and we're running the first compilation, negative if it's
3301 enabled and we're running the second compilation. For most of the
3302 time, it's in the range -1..1, but it can be temporarily set to 2
3303 or 3 to indicate that the -fcompare-debug flags didn't come from
3304 the command-line, but rather from the GCC_COMPARE_DEBUG environment
3305 variable, until a synthesized -fcompare-debug flag is added to the
3309 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
3310 int compare_debug_second;
3312 /* Set to the flags that should be passed to the second compilation in
3313 a -fcompare-debug compilation. */
3314 const char *compare_debug_opt;
3316 static struct switchstr *switches_debug_check[2];
3318 static int n_switches_debug_check[2];
3320 static int n_switches_alloc_debug_check[2];
3322 static char *debug_check_temp_file[2];
3324 /* Language is one of three things:
3326 1) The name of a real programming language.
3327 2) NULL, indicating that no one has figured out
3329 3) '*', indicating that the file should be passed
3334 const char *language;
3335 struct compiler *incompiler;
3340 /* Also a vector of input files specified. */
3342 static struct infile *infiles;
3346 static int n_infiles_alloc;
3348 /* True if undefined environment variables encountered during spec processing
3349 are ok to ignore, typically when we're running for --help or --version. */
3351 static bool spec_undefvar_allowed;
3353 /* True if multiple input files are being compiled to a single
3356 static bool combine_inputs;
3358 /* This counts the number of libraries added by lang_specific_driver, so that
3359 we can tell if there were any user supplied any files or libraries. */
3361 static int added_libraries;
3363 /* And a vector of corresponding output files is made up later. */
3365 const char **outfiles;
3367 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3369 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
3370 is true if we should look for an executable suffix. DO_OBJ
3371 is true if we should look for an object suffix. */
3374 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
3375 int do_obj ATTRIBUTE_UNUSED)
3377 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3385 len = strlen (name);
3387 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3388 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
3389 if (do_obj && len > 2
3390 && name[len - 2] == '.'
3391 && name[len - 1] == 'o')
3393 obstack_grow (&obstack, name, len - 2);
3394 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
3395 name = XOBFINISH (&obstack, const char *);
3399 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3400 /* If there is no filetype, make it the executable suffix (which includes
3401 the "."). But don't get confused if we have just "-o". */
3402 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
3405 for (i = len - 1; i >= 0; i--)
3406 if (IS_DIR_SEPARATOR (name[i]))
3409 for (i++; i < len; i++)
3413 obstack_grow (&obstack, name, len);
3414 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
3415 strlen (TARGET_EXECUTABLE_SUFFIX));
3416 name = XOBFINISH (&obstack, const char *);
3423 /* Display the command line switches accepted by gcc. */
3427 printf (_("Usage: %s [options] file...\n"), progname);
3428 fputs (_("Options:\n"), stdout);
3430 fputs (_(" -pass-exit-codes Exit with highest error code from a phase.\n"), stdout);
3431 fputs (_(" --help Display this information.\n"), stdout);
3432 fputs (_(" --target-help Display target specific command line options.\n"), stdout);
3433 fputs (_(" --help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumented}}[,...].\n"), stdout);
3434 fputs (_(" Display specific types of command line options.\n"), stdout);
3436 fputs (_(" (Use '-v --help' to display command line options of sub-processes).\n"), stdout);
3437 fputs (_(" --version Display compiler version information.\n"), stdout);
3438 fputs (_(" -dumpspecs Display all of the built in spec strings.\n"), stdout);
3439 fputs (_(" -dumpversion Display the version of the compiler.\n"), stdout);
3440 fputs (_(" -dumpmachine Display the compiler's target processor.\n"), stdout);
3441 fputs (_(" -print-search-dirs Display the directories in the compiler's search path.\n"), stdout);
3442 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library.\n"), stdout);
3443 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>.\n"), stdout);
3444 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>.\n"), stdout);
3446 -print-multiarch Display the target's normalized GNU triplet, used as\n\
3447 a component in the library path.\n"), stdout);
3448 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc.\n"), stdout);
3450 -print-multi-lib Display the mapping between command line options and\n\
3451 multiple library search directories.\n"), stdout);
3452 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries.\n"), stdout);
3453 fputs (_(" -print-sysroot Display the target libraries directory.\n"), stdout);
3454 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers.\n"), stdout);
3455 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler.\n"), stdout);
3456 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor.\n"), stdout);
3457 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker.\n"), stdout);
3458 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler.\n"), stdout);
3459 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor.\n"), stdout);
3460 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker.\n"), stdout);
3461 fputs (_(" -save-temps Do not delete intermediate files.\n"), stdout);
3462 fputs (_(" -save-temps=<arg> Do not delete intermediate files.\n"), stdout);
3464 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
3465 prefixes to other gcc components.\n"), stdout);
3466 fputs (_(" -pipe Use pipes rather than intermediate files.\n"), stdout);
3467 fputs (_(" -time Time the execution of each subprocess.\n"), stdout);
3468 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>.\n"), stdout);
3469 fputs (_(" -std=<standard> Assume that the input sources are for <standard>.\n"), stdout);
3471 --sysroot=<directory> Use <directory> as the root directory for headers\n\
3472 and libraries.\n"), stdout);
3473 fputs (_(" -B <directory> Add <directory> to the compiler's search paths.\n"), stdout);
3474 fputs (_(" -v Display the programs invoked by the compiler.\n"), stdout);
3475 fputs (_(" -### Like -v but options quoted and commands not executed.\n"), stdout);
3476 fputs (_(" -E Preprocess only; do not compile, assemble or link.\n"), stdout);
3477 fputs (_(" -S Compile only; do not assemble or link.\n"), stdout);
3478 fputs (_(" -c Compile and assemble, but do not link.\n"), stdout);
3479 fputs (_(" -o <file> Place the output into <file>.\n"), stdout);
3480 fputs (_(" -pie Create a dynamically linked position independent\n\
3481 executable.\n"), stdout);
3482 fputs (_(" -shared Create a shared library.\n"), stdout);
3484 -x <language> Specify the language of the following input files.\n\
3485 Permissible languages include: c c++ assembler none\n\
3486 'none' means revert to the default behavior of\n\
3487 guessing the language based on the file's extension.\n\
3491 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3492 passed on to the various sub-processes invoked by %s. In order to pass\n\
3493 other options on to these processes the -W<letter> options must be used.\n\
3496 /* The rest of the options are displayed by invocations of the various
3501 add_preprocessor_option (const char *option, int len)
3503 preprocessor_options.safe_push (save_string (option, len));
3507 add_assembler_option (const char *option, int len)
3509 assembler_options.safe_push (save_string (option, len));
3513 add_linker_option (const char *option, int len)
3515 linker_options.safe_push (save_string (option, len));
3518 /* Allocate space for an input file in infiles. */
3523 if (n_infiles_alloc == 0)
3525 n_infiles_alloc = 16;
3526 infiles = XNEWVEC (struct infile, n_infiles_alloc);
3528 else if (n_infiles_alloc == n_infiles)
3530 n_infiles_alloc *= 2;
3531 infiles = XRESIZEVEC (struct infile, infiles, n_infiles_alloc);
3535 /* Store an input file with the given NAME and LANGUAGE in
3539 add_infile (const char *name, const char *language)
3542 infiles[n_infiles].name = name;
3543 infiles[n_infiles++].language = language;
3546 /* Allocate space for a switch in switches. */
3551 if (n_switches_alloc == 0)
3553 n_switches_alloc = 16;
3554 switches = XNEWVEC (struct switchstr, n_switches_alloc);
3556 else if (n_switches_alloc == n_switches)
3558 n_switches_alloc *= 2;
3559 switches = XRESIZEVEC (struct switchstr, switches, n_switches_alloc);
3563 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3564 as validated if VALIDATED and KNOWN if it is an internal switch. */
3567 save_switch (const char *opt, size_t n_args, const char *const *args,
3568 bool validated, bool known)
3571 switches[n_switches].part1 = opt + 1;
3573 switches[n_switches].args = 0;
3576 switches[n_switches].args = XNEWVEC (const char *, n_args + 1);
3577 memcpy (switches[n_switches].args, args, n_args * sizeof (const char *));
3578 switches[n_switches].args[n_args] = NULL;
3581 switches[n_switches].live_cond = 0;
3582 switches[n_switches].validated = validated;
3583 switches[n_switches].known = known;
3584 switches[n_switches].ordering = 0;
3588 /* Set the SOURCE_DATE_EPOCH environment variable to the current time if it is
3592 set_source_date_epoch_envvar ()
3594 /* Array size is 21 = ceil(log_10(2^64)) + 1 to hold string representations
3595 of 64 bit integers. */
3596 char source_date_epoch[21];
3601 if (tt < (time_t) 0 || errno != 0)
3604 snprintf (source_date_epoch, 21, "%llu", (unsigned long long) tt);
3605 /* Using setenv instead of xputenv because we want the variable to remain
3606 after finalizing so that it's still set in the second run when using
3608 setenv ("SOURCE_DATE_EPOCH", source_date_epoch, 0);
3611 /* Handle an option DECODED that is unknown to the option-processing
3615 driver_unknown_option_callback (const struct cl_decoded_option *decoded)
3617 const char *opt = decoded->arg;
3618 if (opt[1] == 'W' && opt[2] == 'n' && opt[3] == 'o' && opt[4] == '-'
3619 && !(decoded->errors & CL_ERR_NEGATIVE))
3621 /* Leave unknown -Wno-* options for the compiler proper, to be
3622 diagnosed only if there are warnings. */
3623 save_switch (decoded->canonical_option[0],
3624 decoded->canonical_option_num_elements - 1,
3625 &decoded->canonical_option[1], false, true);
3628 if (decoded->opt_index == OPT_SPECIAL_unknown)
3630 /* Give it a chance to define it a spec file. */
3631 save_switch (decoded->canonical_option[0],
3632 decoded->canonical_option_num_elements - 1,
3633 &decoded->canonical_option[1], false, false);
3640 /* Handle an option DECODED that is not marked as CL_DRIVER.
3641 LANG_MASK will always be CL_DRIVER. */
3644 driver_wrong_lang_callback (const struct cl_decoded_option *decoded,
3645 unsigned int lang_mask ATTRIBUTE_UNUSED)
3647 /* At this point, non-driver options are accepted (and expected to
3648 be passed down by specs) unless marked to be rejected by the
3649 driver. Options to be rejected by the driver but accepted by the
3650 compilers proper are treated just like completely unknown
3652 const struct cl_option *option = &cl_options[decoded->opt_index];
3654 if (option->cl_reject_driver)
3655 error ("unrecognized command line option %qs",
3656 decoded->orig_option_with_args_text);
3658 save_switch (decoded->canonical_option[0],
3659 decoded->canonical_option_num_elements - 1,
3660 &decoded->canonical_option[1], false, true);
3663 static const char *spec_lang = 0;
3664 static int last_language_n_infiles;
3666 /* Parse -foffload option argument. */
3669 handle_foffload_option (const char *arg)
3671 const char *c, *cur, *n, *next, *end;
3674 /* If option argument starts with '-' then no target is specified and we
3675 do not need to parse it. */
3679 end = strchr (arg, '=');
3681 end = strchr (arg, '\0');
3686 next = strchr (cur, ',');
3689 next = (next > end) ? end : next;
3691 target = XNEWVEC (char, next - cur + 1);
3692 memcpy (target, cur, next - cur);
3693 target[next - cur] = '\0';
3695 /* If 'disable' is passed to the option, stop parsing the option and clean
3696 the list of offload targets. */
3697 if (strcmp (target, "disable") == 0)
3699 free (offload_targets);
3700 offload_targets = xstrdup ("");
3704 /* Check that GCC is configured to support the offload target. */
3705 c = OFFLOAD_TARGETS;
3708 n = strchr (c, ',');
3710 n = strchr (c, '\0');
3712 if (next - cur == n - c && strncmp (target, c, n - c) == 0)
3715 c = *n ? n + 1 : NULL;
3719 fatal_error (input_location,
3720 "GCC is not configured to support %s as offload target",
3723 if (!offload_targets)
3725 offload_targets = target;
3730 /* Check that the target hasn't already presented in the list. */
3731 c = offload_targets;
3734 n = strchr (c, ':');
3736 n = strchr (c, '\0');
3738 if (next - cur == n - c && strncmp (c, target, n - c) == 0)
3745 /* If duplicate is not found, append the target to the list. */
3748 size_t offload_targets_len = strlen (offload_targets);
3750 = XRESIZEVEC (char, offload_targets,
3751 offload_targets_len + 1 + next - cur + 1);
3752 offload_targets[offload_targets_len++] = ':';
3753 memcpy (offload_targets + offload_targets_len, target, next - cur + 1);
3758 XDELETEVEC (target);
3762 /* Handle a driver option; arguments and return value as for
3766 driver_handle_option (struct gcc_options *opts,
3767 struct gcc_options *opts_set,
3768 const struct cl_decoded_option *decoded,
3769 unsigned int lang_mask ATTRIBUTE_UNUSED, int kind,
3771 const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED,
3772 diagnostic_context *dc,
3775 size_t opt_index = decoded->opt_index;
3776 const char *arg = decoded->arg;
3777 const char *compare_debug_replacement_opt;
3778 int value = decoded->value;
3779 bool validated = false;
3780 bool do_save = true;
3782 gcc_assert (opts == &global_options);
3783 gcc_assert (opts_set == &global_options_set);
3784 gcc_assert (kind == DK_UNSPECIFIED);
3785 gcc_assert (loc == UNKNOWN_LOCATION);
3786 gcc_assert (dc == global_dc);
3792 struct spec_list *sl;
3794 for (sl = specs; sl; sl = sl->next)
3795 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3796 if (link_command_spec)
3797 printf ("*link_command:\n%s\n\n", link_command_spec);
3801 case OPT_dumpversion:
3802 printf ("%s\n", spec_version);
3805 case OPT_dumpmachine:
3806 printf ("%s\n", spec_machine);
3809 case OPT_dumpfullversion:
3810 printf ("%s\n", BASEVER);
3816 /* CPP driver cannot obtain switch from cc1_options. */
3818 add_preprocessor_option ("--version", strlen ("--version"));
3819 add_assembler_option ("--version", strlen ("--version"));
3820 add_linker_option ("--version", strlen ("--version"));
3824 print_help_list = 1;
3826 /* CPP driver cannot obtain switch from cc1_options. */
3828 add_preprocessor_option ("--help", 6);
3829 add_assembler_option ("--help", 6);
3830 add_linker_option ("--help", 6);
3834 print_subprocess_help = 2;
3837 case OPT__target_help:
3838 print_subprocess_help = 1;
3840 /* CPP driver cannot obtain switch from cc1_options. */
3842 add_preprocessor_option ("--target-help", 13);
3843 add_assembler_option ("--target-help", 13);
3844 add_linker_option ("--target-help", 13);
3847 case OPT__no_sysroot_suffix:
3848 case OPT_pass_exit_codes:
3849 case OPT_print_search_dirs:
3850 case OPT_print_file_name_:
3851 case OPT_print_prog_name_:
3852 case OPT_print_multi_lib:
3853 case OPT_print_multi_directory:
3854 case OPT_print_sysroot:
3855 case OPT_print_multi_os_directory:
3856 case OPT_print_multiarch:
3857 case OPT_print_sysroot_headers_suffix:
3860 /* These options set the variables specified in common.opt
3861 automatically, and do not need to be saved for spec
3866 case OPT_print_libgcc_file_name:
3867 print_file_name = "libgcc.a";
3871 case OPT_fuse_ld_bfd:
3875 case OPT_fuse_ld_gold:
3879 case OPT_fcompare_debug_second:
3880 compare_debug_second = 1;
3883 case OPT_fcompare_debug:
3887 compare_debug_replacement_opt = "-fcompare-debug=";
3889 goto compare_debug_with_arg;
3892 compare_debug_replacement_opt = "-fcompare-debug=-gtoggle";
3894 goto compare_debug_with_arg;
3901 case OPT_fcompare_debug_:
3902 compare_debug_replacement_opt = decoded->canonical_option[0];
3903 compare_debug_with_arg:
3904 gcc_assert (decoded->canonical_option_num_elements == 1);
3905 gcc_assert (arg != NULL);
3910 if (compare_debug < 0)
3911 compare_debug_opt = NULL;
3913 compare_debug_opt = arg;
3914 save_switch (compare_debug_replacement_opt, 0, NULL, validated, true);
3915 set_source_date_epoch_envvar ();
3918 case OPT_fdiagnostics_color_:
3919 diagnostic_color_init (dc, value);
3925 /* Pass the rest of this option to the assembler. */
3927 /* Split the argument at commas. */
3929 for (j = 0; arg[j]; j++)
3932 add_assembler_option (arg + prev, j - prev);
3936 /* Record the part after the last comma. */
3937 add_assembler_option (arg + prev, j - prev);
3945 /* Pass the rest of this option to the preprocessor. */
3947 /* Split the argument at commas. */
3949 for (j = 0; arg[j]; j++)
3952 add_preprocessor_option (arg + prev, j - prev);
3956 /* Record the part after the last comma. */
3957 add_preprocessor_option (arg + prev, j - prev);
3965 /* Split the argument at commas. */
3967 for (j = 0; arg[j]; j++)
3970 add_infile (save_string (arg + prev, j - prev), "*");
3973 /* Record the part after the last comma. */
3974 add_infile (arg + prev, "*");
3980 add_infile (arg, "*");
3984 case OPT_Xpreprocessor:
3985 add_preprocessor_option (arg, strlen (arg));
3989 case OPT_Xassembler:
3990 add_assembler_option (arg, strlen (arg));
3995 /* POSIX allows separation of -l and the lib arg; canonicalize
3996 by concatenating -l with its arg */
3997 add_infile (concat ("-l", arg, NULL), "*");
4002 /* Similarly, canonicalize -L for linkers that may not accept
4003 separate arguments. */
4004 save_switch (concat ("-L", arg, NULL), 0, NULL, validated, true);
4009 save_switch (concat ("-F", arg, NULL), 0, NULL, validated, true);
4012 case OPT_save_temps:
4013 save_temps_flag = SAVE_TEMPS_CWD;
4017 case OPT_save_temps_:
4018 if (strcmp (arg, "cwd") == 0)
4019 save_temps_flag = SAVE_TEMPS_CWD;
4020 else if (strcmp (arg, "obj") == 0
4021 || strcmp (arg, "object") == 0)
4022 save_temps_flag = SAVE_TEMPS_OBJ;
4024 fatal_error (input_location, "%qs is an unknown -save-temps option",
4025 decoded->orig_option_with_args_text);
4028 case OPT_no_canonical_prefixes:
4029 /* Already handled as a special case, so ignored here. */
4035 /* These options set the variables specified in common.opt
4036 automatically, but do need to be saved for spec
4042 struct user_specs *user = XNEW (struct user_specs);
4044 user->next = (struct user_specs *) 0;
4045 user->filename = arg;
4046 if (user_specs_tail)
4047 user_specs_tail->next = user;
4049 user_specs_head = user;
4050 user_specs_tail = user;
4056 target_system_root = arg;
4057 target_system_root_changed = 1;
4062 if (report_times_to_file)
4063 fclose (report_times_to_file);
4064 report_times_to_file = fopen (arg, "a");
4070 This is similar to -v except that there is no execution
4071 of the commands and the echoed arguments are quoted. It
4072 is intended for use in shell scripts to capture the
4073 driver-generated command line. */
4074 verbose_only_flag++;
4081 size_t len = strlen (arg);
4083 /* Catch the case where the user has forgotten to append a
4084 directory separator to the path. Note, they may be using
4085 -B to add an executable name prefix, eg "i386-elf-", in
4086 order to distinguish between multiple installations of
4087 GCC in the same directory. Hence we must check to see
4088 if appending a directory separator actually makes a
4089 valid directory name. */
4090 if (!IS_DIR_SEPARATOR (arg[len - 1])
4091 && is_directory (arg, false))
4093 char *tmp = XNEWVEC (char, len + 2);
4095 tmp[len] = DIR_SEPARATOR;
4100 add_prefix (&exec_prefixes, arg, NULL,
4101 PREFIX_PRIORITY_B_OPT, 0, 0);
4102 add_prefix (&startfile_prefixes, arg, NULL,
4103 PREFIX_PRIORITY_B_OPT, 0, 0);
4104 add_prefix (&include_prefixes, arg, NULL,
4105 PREFIX_PRIORITY_B_OPT, 0, 0);
4116 if (!strcmp (spec_lang, "none"))
4117 /* Suppress the warning if -xnone comes after the last input
4118 file, because alternate command interfaces like g++ might
4119 find it useful to place -xnone after each input file. */
4122 last_language_n_infiles = n_infiles;
4128 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
4129 arg = convert_filename (arg, ! have_c, 0);
4132 /* Save the output name in case -save-temps=obj was used. */
4133 save_temps_prefix = xstrdup (arg);
4134 /* On some systems, ld cannot handle "-o" without a space. So
4135 split the option from its argument. */
4136 save_switch ("-o", 1, &arg, validated, true);
4139 #ifdef ENABLE_DEFAULT_PIE
4141 /* -pie is turned on by default. */
4144 case OPT_static_libgcc:
4145 case OPT_shared_libgcc:
4146 case OPT_static_libgfortran:
4147 case OPT_static_libstdc__:
4148 /* These are always valid, since gcc.c itself understands the
4149 first two, gfortranspec.c understands -static-libgfortran and
4150 g++spec.c understands -static-libstdc++ */
4159 handle_foffload_option (arg);
4163 /* Various driver options need no special processing at this
4164 point, having been handled in a prescan above or being
4165 handled by specs. */
4170 save_switch (decoded->canonical_option[0],
4171 decoded->canonical_option_num_elements - 1,
4172 &decoded->canonical_option[1], validated, true);
4176 /* Put the driver's standard set of option handlers in *HANDLERS. */
4179 set_option_handlers (struct cl_option_handlers *handlers)
4181 handlers->unknown_option_callback = driver_unknown_option_callback;
4182 handlers->wrong_lang_callback = driver_wrong_lang_callback;
4183 handlers->num_handlers = 3;
4184 handlers->handlers[0].handler = driver_handle_option;
4185 handlers->handlers[0].mask = CL_DRIVER;
4186 handlers->handlers[1].handler = common_handle_option;
4187 handlers->handlers[1].mask = CL_COMMON;
4188 handlers->handlers[2].handler = target_handle_option;
4189 handlers->handlers[2].mask = CL_TARGET;
4192 /* Create the vector `switches' and its contents.
4193 Store its length in `n_switches'. */
4196 process_command (unsigned int decoded_options_count,
4197 struct cl_decoded_option *decoded_options)
4201 char *tooldir_prefix, *tooldir_prefix2;
4202 char *(*get_relative_prefix) (const char *, const char *,
4203 const char *) = NULL;
4204 struct cl_option_handlers handlers;
4207 gcc_exec_prefix = env.get ("GCC_EXEC_PREFIX");
4211 added_libraries = 0;
4213 /* Figure compiler version from version string. */
4215 compiler_version = temp1 = xstrdup (version_string);
4217 for (; *temp1; ++temp1)
4226 /* Handle any -no-canonical-prefixes flag early, to assign the function
4227 that builds relative prefixes. This function creates default search
4228 paths that are needed later in normal option handling. */
4230 for (j = 1; j < decoded_options_count; j++)
4232 if (decoded_options[j].opt_index == OPT_no_canonical_prefixes)
4234 get_relative_prefix = make_relative_prefix_ignore_links;
4238 if (! get_relative_prefix)
4239 get_relative_prefix = make_relative_prefix;
4241 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
4242 see if we can create it from the pathname specified in
4243 decoded_options[0].arg. */
4245 gcc_libexec_prefix = standard_libexec_prefix;
4247 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
4248 if (!gcc_exec_prefix)
4250 #if 0 /* DragonFly base: Never use relative prefix (not bootstrapped) */
4251 gcc_exec_prefix = get_relative_prefix (decoded_options[0].arg,
4252 standard_bindir_prefix,
4253 standard_exec_prefix);
4254 gcc_libexec_prefix = get_relative_prefix (decoded_options[0].arg,
4255 standard_bindir_prefix,
4256 standard_libexec_prefix);
4257 if (gcc_exec_prefix)
4258 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
4263 /* make_relative_prefix requires a program name, but
4264 GCC_EXEC_PREFIX is typically a directory name with a trailing
4265 / (which is ignored by make_relative_prefix), so append a
4267 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL);
4268 gcc_libexec_prefix = get_relative_prefix (tmp_prefix,
4269 standard_exec_prefix,
4270 standard_libexec_prefix);
4272 /* The path is unrelocated, so fallback to the original setting. */
4273 if (!gcc_libexec_prefix)
4274 gcc_libexec_prefix = standard_libexec_prefix;
4280 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
4281 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
4282 or an automatically created GCC_EXEC_PREFIX from
4283 decoded_options[0].arg. */
4285 /* Do language-specific adjustment/addition of flags. */
4286 lang_specific_driver (&decoded_options, &decoded_options_count,
4289 if (gcc_exec_prefix)
4291 int len = strlen (gcc_exec_prefix);
4293 if (len > (int) sizeof ("/lib/gcc/") - 1
4294 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
4296 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
4297 if (IS_DIR_SEPARATOR (*temp)
4298 && filename_ncmp (temp + 1, "lib", 3) == 0
4299 && IS_DIR_SEPARATOR (temp[4])
4300 && filename_ncmp (temp + 5, "gcc", 3) == 0)
4301 len -= sizeof ("/lib/gcc/") - 1;
4304 #if 0 /* DragonFly base: Bad Paths */
4305 set_std_prefix (gcc_exec_prefix, len);
4306 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
4307 PREFIX_PRIORITY_LAST, 0, 0);
4308 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
4309 PREFIX_PRIORITY_LAST, 0, 0);
4313 /* COMPILER_PATH and LIBRARY_PATH have values
4314 that are lists of directory names with colons. */
4316 temp = env.get ("COMPILER_PATH");
4319 const char *startp, *endp;
4320 char *nstore = (char *) alloca (strlen (temp) + 3);
4322 startp = endp = temp;
4325 if (*endp == PATH_SEPARATOR || *endp == 0)
4327 strncpy (nstore, startp, endp - startp);
4329 strcpy (nstore, concat (".", dir_separator_str, NULL));
4330 else if (!IS_DIR_SEPARATOR (endp[-1]))
4332 nstore[endp - startp] = DIR_SEPARATOR;
4333 nstore[endp - startp + 1] = 0;
4336 nstore[endp - startp] = 0;
4337 add_prefix (&exec_prefixes, nstore, 0,
4338 PREFIX_PRIORITY_LAST, 0, 0);
4339 add_prefix (&include_prefixes, nstore, 0,
4340 PREFIX_PRIORITY_LAST, 0, 0);
4343 endp = startp = endp + 1;
4350 temp = env.get (LIBRARY_PATH_ENV);
4351 if (temp && *cross_compile == '0')
4353 const char *startp, *endp;
4354 char *nstore = (char *) alloca (strlen (temp) + 3);
4356 startp = endp = temp;
4359 if (*endp == PATH_SEPARATOR || *endp == 0)
4361 strncpy (nstore, startp, endp - startp);
4363 strcpy (nstore, concat (".", dir_separator_str, NULL));
4364 else if (!IS_DIR_SEPARATOR (endp[-1]))
4366 nstore[endp - startp] = DIR_SEPARATOR;
4367 nstore[endp - startp + 1] = 0;
4370 nstore[endp - startp] = 0;
4371 add_prefix (&startfile_prefixes, nstore, NULL,
4372 PREFIX_PRIORITY_LAST, 0, 1);
4375 endp = startp = endp + 1;
4382 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
4383 temp = env.get ("LPATH");
4384 if (temp && *cross_compile == '0')
4386 const char *startp, *endp;
4387 char *nstore = (char *) alloca (strlen (temp) + 3);
4389 startp = endp = temp;
4392 if (*endp == PATH_SEPARATOR || *endp == 0)
4394 strncpy (nstore, startp, endp - startp);
4396 strcpy (nstore, concat (".", dir_separator_str, NULL));
4397 else if (!IS_DIR_SEPARATOR (endp[-1]))
4399 nstore[endp - startp] = DIR_SEPARATOR;
4400 nstore[endp - startp + 1] = 0;
4403 nstore[endp - startp] = 0;
4404 add_prefix (&startfile_prefixes, nstore, NULL,
4405 PREFIX_PRIORITY_LAST, 0, 1);
4408 endp = startp = endp + 1;
4415 /* Process the options and store input files and switches in their
4418 last_language_n_infiles = -1;
4420 set_option_handlers (&handlers);
4422 for (j = 1; j < decoded_options_count; j++)
4424 switch (decoded_options[j].opt_index)
4436 for (j = 1; j < decoded_options_count; j++)
4438 if (decoded_options[j].opt_index == OPT_SPECIAL_input_file)
4440 const char *arg = decoded_options[j].arg;
4441 const char *p = strrchr (arg, '@');
4445 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4446 arg = convert_filename (arg, 0, access (arg, F_OK));
4448 /* For LTO static archive support we handle input file
4449 specifications that are composed of a filename and
4450 an offset like FNAME@OFFSET. */
4453 && sscanf (p, "@%li%n", &offset, &consumed) >= 1
4454 && strlen (p) == (unsigned int)consumed)
4456 fname = (char *)xmalloc (p - arg + 1);
4457 memcpy (fname, arg, p - arg);
4458 fname[p - arg] = '\0';
4459 /* Only accept non-stdin and existing FNAME parts, otherwise
4460 try with the full name. */
4461 if (strcmp (fname, "-") == 0 || access (fname, F_OK) < 0)
4464 fname = xstrdup (arg);
4468 fname = xstrdup (arg);
4470 if (strcmp (fname, "-") != 0 && access (fname, F_OK) < 0)
4472 if (fname[0] == '@' && access (fname + 1, F_OK) < 0)
4473 perror_with_name (fname + 1);
4475 perror_with_name (fname);
4478 add_infile (arg, spec_lang);
4484 read_cmdline_option (&global_options, &global_options_set,
4485 decoded_options + j, UNKNOWN_LOCATION,
4486 CL_DRIVER, &handlers, global_dc);
4489 /* If the user didn't specify any, default to all configured offload
4491 if (ENABLE_OFFLOADING && offload_targets == NULL)
4492 handle_foffload_option (OFFLOAD_TARGETS);
4495 && strcmp (output_file, "-") != 0
4496 && strcmp (output_file, HOST_BIT_BUCKET) != 0)
4499 for (i = 0; i < n_infiles; i++)
4500 if ((!infiles[i].language || infiles[i].language[0] != '*')
4501 && canonical_filename_eq (infiles[i].name, output_file))
4502 fatal_error (input_location,
4503 "input file %qs is the same as output file",
4507 if (output_file != NULL && output_file[0] == '\0')
4508 fatal_error (input_location, "output filename may not be empty");
4510 /* If -save-temps=obj and -o name, create the prefix to use for %b.
4511 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
4512 if (save_temps_flag == SAVE_TEMPS_OBJ && save_temps_prefix != NULL)
4514 save_temps_length = strlen (save_temps_prefix);
4515 temp = strrchr (lbasename (save_temps_prefix), '.');
4518 save_temps_length -= strlen (temp);
4519 save_temps_prefix[save_temps_length] = '\0';
4523 else if (save_temps_prefix != NULL)
4525 free (save_temps_prefix);
4526 save_temps_prefix = NULL;
4529 if (save_temps_flag && use_pipes)
4531 /* -save-temps overrides -pipe, so that temp files are produced */
4532 if (save_temps_flag)
4533 warning (0, "-pipe ignored because -save-temps specified");
4539 const char *gcd = env.get ("GCC_COMPARE_DEBUG");
4541 if (gcd && gcd[0] == '-')
4544 compare_debug_opt = gcd;
4546 else if (gcd && *gcd && strcmp (gcd, "0"))
4549 compare_debug_opt = "-gtoggle";
4552 else if (compare_debug < 0)
4555 gcc_assert (!compare_debug_opt);
4558 /* Set up the search paths. We add directories that we expect to
4559 contain GNU Toolchain components before directories specified by
4560 the machine description so that we will find GNU components (like
4561 the GNU assembler) before those of the host system. */
4563 /* If we don't know where the toolchain has been installed, use the
4564 configured-in locations. */
4565 if (!gcc_exec_prefix)
4568 #if 1 /* DragonFly base: All tools in the same common location */
4569 add_prefix (&exec_prefixes, standard_libexec_prefix, NULL,
4570 PREFIX_PRIORITY_LAST, 0, 0);
4572 #if 0 /* DragonFly base: Bad paths */
4573 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
4574 PREFIX_PRIORITY_LAST, 1, 0);
4575 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
4576 PREFIX_PRIORITY_LAST, 2, 0);
4577 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
4578 PREFIX_PRIORITY_LAST, 2, 0);
4581 #if 0 /* DragonFly base: Bad paths */
4582 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
4583 PREFIX_PRIORITY_LAST, 1, 0);
4587 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix));
4588 tooldir_prefix2 = concat (tooldir_base_prefix, spec_machine,
4589 dir_separator_str, NULL);
4591 /* Look for tools relative to the location from which the driver is
4592 running, or, if that is not available, the configured prefix. */
4594 = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
4595 spec_host_machine, dir_separator_str, spec_version,
4596 accel_dir_suffix, dir_separator_str, tooldir_prefix2, NULL);
4597 free (tooldir_prefix2);
4599 #if 0 /* DragonFly base: Bad paths */
4600 add_prefix (&exec_prefixes,
4601 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
4602 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0);
4603 add_prefix (&startfile_prefixes,
4604 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
4605 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1);
4607 free (tooldir_prefix);
4609 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
4610 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
4611 then consider it to relocate with the rest of the GCC installation
4612 if GCC_EXEC_PREFIX is set.
4613 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
4614 if (target_system_root && !target_system_root_changed && gcc_exec_prefix)
4616 char *tmp_prefix = get_relative_prefix (decoded_options[0].arg,
4617 standard_bindir_prefix,
4618 target_system_root);
4619 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
4621 target_system_root = tmp_prefix;
4622 target_system_root_changed = 1;
4627 /* More prefixes are enabled in main, after we read the specs file
4628 and determine whether this is cross-compilation or not. */
4630 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4631 warning (0, "%<-x %s%> after last input file has no effect", spec_lang);
4633 /* Synthesize -fcompare-debug flag from the GCC_COMPARE_DEBUG
4634 environment variable. */
4635 if (compare_debug == 2 || compare_debug == 3)
4637 const char *opt = concat ("-fcompare-debug=", compare_debug_opt, NULL);
4638 save_switch (opt, 0, NULL, false, true);
4642 /* Ensure we only invoke each subprocess once. */
4643 if (print_subprocess_help || print_help_list || print_version)
4647 /* Create a dummy input file, so that we can pass
4648 the help option on to the various sub-processes. */
4649 add_infile ("help-dummy", "c");
4652 /* Decide if undefined variable references are allowed in specs. */
4654 /* -v alone is safe. --version and --help alone or together are safe. Note
4655 that -v would make them unsafe, as they'd then be run for subprocesses as
4656 well, the location of which might depend on variables possibly coming
4657 from self-specs. Note also that the command name is counted in
4658 decoded_options_count. */
4660 unsigned help_version_count = 0;
4663 help_version_count++;
4665 if (print_help_list)
4666 help_version_count++;
4668 spec_undefvar_allowed =
4669 ((verbose_flag && decoded_options_count == 2)
4670 || help_version_count == decoded_options_count - 1);
4673 switches[n_switches].part1 = 0;
4675 infiles[n_infiles].name = 0;
4678 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4679 and place that in the environment. */
4682 set_collect_gcc_options (void)
4687 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4689 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4690 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4693 for (i = 0; (int) i < n_switches; i++)
4695 const char *const *args;
4698 obstack_grow (&collect_obstack, " ", 1);
4702 /* Ignore elided switches. */
4703 if ((switches[i].live_cond
4704 & (SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC))
4708 obstack_grow (&collect_obstack, "'-", 2);
4709 q = switches[i].part1;
4710 while ((p = strchr (q, '\'')))
4712 obstack_grow (&collect_obstack, q, p - q);
4713 obstack_grow (&collect_obstack, "'\\''", 4);
4716 obstack_grow (&collect_obstack, q, strlen (q));
4717 obstack_grow (&collect_obstack, "'", 1);
4719 for (args = switches[i].args; args && *args; args++)
4721 obstack_grow (&collect_obstack, " '", 2);
4723 while ((p = strchr (q, '\'')))
4725 obstack_grow (&collect_obstack, q, p - q);
4726 obstack_grow (&collect_obstack, "'\\''", 4);
4729 obstack_grow (&collect_obstack, q, strlen (q));
4730 obstack_grow (&collect_obstack, "'", 1);
4733 obstack_grow (&collect_obstack, "\0", 1);
4734 xputenv (XOBFINISH (&collect_obstack, char *));
4737 /* Process a spec string, accumulating and running commands. */
4739 /* These variables describe the input file name.
4740 input_file_number is the index on outfiles of this file,
4741 so that the output file name can be stored for later use by %o.
4742 input_basename is the start of the part of the input file
4743 sans all directory names, and basename_length is the number
4744 of characters starting there excluding the suffix .c or whatever. */
4746 static const char *gcc_input_filename;
4747 static int input_file_number;
4748 size_t input_filename_length;
4749 static int basename_length;
4750 static int suffixed_basename_length;
4751 static const char *input_basename;
4752 static const char *input_suffix;
4753 #ifndef HOST_LACKS_INODE_NUMBERS
4754 static struct stat input_stat;
4756 static int input_stat_set;
4758 /* The compiler used to process the current input file. */
4759 static struct compiler *input_file_compiler;
4761 /* These are variables used within do_spec and do_spec_1. */
4763 /* Nonzero if an arg has been started and not yet terminated
4764 (with space, tab or newline). */
4765 static int arg_going;
4767 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4768 is a temporary file name. */
4769 static int delete_this_arg;
4771 /* Nonzero means %w has been seen; the next arg to be terminated
4772 is the output file name of this compilation. */
4773 static int this_is_output_file;
4775 /* Nonzero means %s has been seen; the next arg to be terminated
4776 is the name of a library file and we should try the standard
4777 search dirs for it. */
4778 static int this_is_library_file;
4780 /* Nonzero means %T has been seen; the next arg to be terminated
4781 is the name of a linker script and we should try all of the
4782 standard search dirs for it. If it is found insert a --script
4783 command line switch and then substitute the full path in place,
4784 otherwise generate an error message. */
4785 static int this_is_linker_script;
4787 /* Nonzero means that the input of this command is coming from a pipe. */
4788 static int input_from_pipe;
4790 /* Nonnull means substitute this for any suffix when outputting a switches
4792 static const char *suffix_subst;
4794 /* If there is an argument being accumulated, terminate it and store it. */
4797 end_going_arg (void)
4803 obstack_1grow (&obstack, 0);
4804 string = XOBFINISH (&obstack, const char *);
4805 if (this_is_library_file)
4806 string = find_file (string);
4807 if (this_is_linker_script)
4809 char * full_script_path = find_a_file (&startfile_prefixes, string, R_OK, true);
4811 if (full_script_path == NULL)
4813 error ("unable to locate default linker script %qs in the library search paths", string);
4814 /* Script was not found on search path. */
4817 store_arg ("--script", false, false);
4818 string = full_script_path;
4820 store_arg (string, delete_this_arg, this_is_output_file);
4821 if (this_is_output_file)
4822 outfiles[input_file_number] = string;
4828 /* Parse the WRAPPER string which is a comma separated list of the command line
4829 and insert them into the beginning of argbuf. */
4832 insert_wrapper (const char *wrapper)
4836 char *buf = xstrdup (wrapper);
4838 unsigned int old_length = argbuf.length ();
4846 while ((p = strchr (p, ',')) != NULL);
4848 argbuf.safe_grow (old_length + n);
4849 memmove (argbuf.address () + n,
4851 old_length * sizeof (const_char_p));
4865 while ((p = strchr (p, ',')) != NULL);
4866 gcc_assert (i == n);
4869 /* Process the spec SPEC and run the commands specified therein.
4870 Returns 0 if the spec is successfully processed; -1 if failed. */
4873 do_spec (const char *spec)
4877 value = do_spec_2 (spec);
4879 /* Force out any unfinished command.
4880 If -pipe, this forces out the last command if it ended in `|'. */
4883 if (argbuf.length () > 0
4884 && !strcmp (argbuf.last (), "|"))
4887 set_collect_gcc_options ();
4889 if (argbuf.length () > 0)
4897 do_spec_2 (const char *spec)
4903 delete_this_arg = 0;
4904 this_is_output_file = 0;
4905 this_is_library_file = 0;
4906 this_is_linker_script = 0;
4907 input_from_pipe = 0;
4908 suffix_subst = NULL;
4910 result = do_spec_1 (spec, 0, NULL);
4918 /* Process the given spec string and add any new options to the end
4919 of the switches/n_switches array. */
4922 do_option_spec (const char *name, const char *spec)
4924 unsigned int i, value_count, value_len;
4925 const char *p, *q, *value;
4926 char *tmp_spec, *tmp_spec_p;
4928 if (configure_default_options[0].name == NULL)
4931 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4932 if (strcmp (configure_default_options[i].name, name) == 0)
4934 if (i == ARRAY_SIZE (configure_default_options))
4937 value = configure_default_options[i].value;
4938 value_len = strlen (value);
4940 /* Compute the size of the final spec. */
4943 while ((p = strstr (p, "%(VALUE)")) != NULL)
4949 /* Replace each %(VALUE) by the specified value. */
4950 tmp_spec = (char *) alloca (strlen (spec) + 1
4951 + value_count * (value_len - strlen ("%(VALUE)")));
4952 tmp_spec_p = tmp_spec;
4954 while ((p = strstr (q, "%(VALUE)")) != NULL)
4956 memcpy (tmp_spec_p, q, p - q);
4957 tmp_spec_p = tmp_spec_p + (p - q);
4958 memcpy (tmp_spec_p, value, value_len);
4959 tmp_spec_p += value_len;
4960 q = p + strlen ("%(VALUE)");
4962 strcpy (tmp_spec_p, q);
4964 do_self_spec (tmp_spec);
4967 /* Process the given spec string and add any new options to the end
4968 of the switches/n_switches array. */
4971 do_self_spec (const char *spec)
4976 do_spec_1 (" ", 0, NULL);
4978 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4979 do_self_specs adds the replacements to switches array, so it shouldn't
4980 be processed afterwards. */
4981 for (i = 0; i < n_switches; i++)
4982 if ((switches[i].live_cond & SWITCH_IGNORE))
4983 switches[i].live_cond |= SWITCH_IGNORE_PERMANENTLY;
4985 if (argbuf.length () > 0)
4987 const char **argbuf_copy;
4988 struct cl_decoded_option *decoded_options;
4989 struct cl_option_handlers handlers;
4990 unsigned int decoded_options_count;
4993 /* Create a copy of argbuf with a dummy argv[0] entry for
4994 decode_cmdline_options_to_array. */
4995 argbuf_copy = XNEWVEC (const char *,
4996 argbuf.length () + 1);
4997 argbuf_copy[0] = "";
4998 memcpy (argbuf_copy + 1, argbuf.address (),
4999 argbuf.length () * sizeof (const char *));
5001 decode_cmdline_options_to_array (argbuf.length () + 1,
5003 CL_DRIVER, &decoded_options,
5004 &decoded_options_count);
5007 set_option_handlers (&handlers);
5009 for (j = 1; j < decoded_options_count; j++)
5011 switch (decoded_options[j].opt_index)
5013 case OPT_SPECIAL_input_file:
5014 /* Specs should only generate options, not input
5016 if (strcmp (decoded_options[j].arg, "-") != 0)
5017 fatal_error (input_location,
5018 "switch %qs does not start with %<-%>",
5019 decoded_options[j].arg);
5021 fatal_error (input_location,
5022 "spec-generated switch is just %<-%>");
5025 case OPT_fcompare_debug_second:
5026 case OPT_fcompare_debug:
5027 case OPT_fcompare_debug_:
5029 /* Avoid duplicate processing of some options from
5030 compare-debug specs; just save them here. */
5031 save_switch (decoded_options[j].canonical_option[0],
5032 (decoded_options[j].canonical_option_num_elements
5034 &decoded_options[j].canonical_option[1], false, true);
5038 read_cmdline_option (&global_options, &global_options_set,
5039 decoded_options + j, UNKNOWN_LOCATION,
5040 CL_DRIVER, &handlers, global_dc);
5045 free (decoded_options);
5048 switches[n_switches].part1 = 0;
5052 /* Callback for processing %D and %I specs. */
5054 struct spec_path_info {
5059 bool separate_options;
5063 spec_path (char *path, void *data)
5065 struct spec_path_info *info = (struct spec_path_info *) data;
5069 if (info->omit_relative && !IS_ABSOLUTE_PATH (path))
5072 if (info->append_len != 0)
5074 len = strlen (path);
5075 memcpy (path + len, info->append, info->append_len + 1);
5078 if (!is_directory (path, true))
5081 do_spec_1 (info->option, 1, NULL);
5082 if (info->separate_options)
5083 do_spec_1 (" ", 0, NULL);
5085 if (info->append_len == 0)
5087 len = strlen (path);
5088 save = path[len - 1];
5089 if (IS_DIR_SEPARATOR (path[len - 1]))
5090 path[len - 1] = '\0';
5093 do_spec_1 (path, 1, NULL);
5094 do_spec_1 (" ", 0, NULL);
5096 /* Must not damage the original path. */
5097 if (info->append_len == 0)
5098 path[len - 1] = save;
5103 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
5107 create_at_file (char **argv)
5109 char *temp_file = make_temp_file ("");
5110 char *at_argument = concat ("@", temp_file, NULL);
5111 FILE *f = fopen (temp_file, "w");
5115 fatal_error (input_location, "could not open temporary response file %s",
5118 status = writeargv (argv, f);
5121 fatal_error (input_location,
5122 "could not write to temporary response file %s",
5125 status = fclose (f);
5128 fatal_error (input_location, "could not close temporary response file %s",
5131 store_arg (at_argument, 0, 0);
5133 record_temp_file (temp_file, !save_temps_flag, !save_temps_flag);
5136 /* True if we should compile INFILE. */
5139 compile_input_file_p (struct infile *infile)
5141 if ((!infile->language) || (infile->language[0] != '*'))
5142 if (infile->incompiler == input_file_compiler)
5147 /* Process each member of VEC as a spec. */
5150 do_specs_vec (vec<char_p> vec)
5155 FOR_EACH_VEC_ELT (vec, ix, opt)
5157 do_spec_1 (opt, 1, NULL);
5158 /* Make each accumulated option a separate argument. */
5159 do_spec_1 (" ", 0, NULL);
5163 /* Process the sub-spec SPEC as a portion of a larger spec.
5164 This is like processing a whole spec except that we do
5165 not initialize at the beginning and we do not supply a
5166 newline by default at the end.
5167 INSWITCH nonzero means don't process %-sequences in SPEC;
5168 in this case, % is treated as an ordinary character.
5169 This is used while substituting switches.
5170 INSWITCH nonzero also causes SPC not to terminate an argument.
5172 Value is zero unless a line was finished
5173 and the command on that line reported an error. */
5176 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
5178 const char *p = spec;
5183 /* If it's an empty string argument to a switch, keep it as is. */
5184 if (inswitch && !*p)
5188 /* If substituting a switch, treat all chars like letters.
5189 Otherwise, NL, SPC, TAB and % are special. */
5190 switch (inswitch ? 'a' : c)
5195 if (argbuf.length () > 0
5196 && !strcmp (argbuf.last (), "|"))
5198 /* A `|' before the newline means use a pipe here,
5199 but only if -pipe was specified.
5200 Otherwise, execute now and don't pass the `|' as an arg. */
5203 input_from_pipe = 1;
5210 set_collect_gcc_options ();
5212 if (argbuf.length () > 0)
5218 /* Reinitialize for a new command, and for a new argument. */
5221 delete_this_arg = 0;
5222 this_is_output_file = 0;
5223 this_is_library_file = 0;
5224 this_is_linker_script = 0;
5225 input_from_pipe = 0;
5232 obstack_1grow (&obstack, c);
5240 /* Reinitialize for a new argument. */
5241 delete_this_arg = 0;
5242 this_is_output_file = 0;
5243 this_is_library_file = 0;
5244 this_is_linker_script = 0;
5251 fatal_error (input_location, "spec %qs invalid", spec);
5254 if (save_temps_length)
5255 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
5257 obstack_grow (&obstack, input_basename, basename_length);
5258 if (compare_debug < 0)
5259 obstack_grow (&obstack, ".gk", 3);
5264 if (save_temps_length)
5265 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
5267 obstack_grow (&obstack, input_basename, suffixed_basename_length);
5268 if (compare_debug < 0)
5269 obstack_grow (&obstack, ".gk", 3);
5274 delete_this_arg = 2;
5277 /* Dump out the directories specified with LIBRARY_PATH,
5278 followed by the absolute directories
5279 that we search for startfiles. */
5282 struct spec_path_info info;
5285 info.append_len = 0;
5286 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
5287 /* Used on systems which record the specified -L dirs
5288 and use them to search for dynamic linking.
5289 Relative directories always come from -B,
5290 and it is better not to use them for searching
5291 at run time. In particular, stage1 loses. */
5292 info.omit_relative = true;
5294 info.omit_relative = false;
5296 info.separate_options = false;
5298 for_each_path (&startfile_prefixes, true, 0, spec_path, &info);
5303 /* %efoo means report an error with `foo' as error message
5304 and don't execute any more commands for this file. */
5308 while (*p != 0 && *p != '\n')
5310 buf = (char *) alloca (p - q + 1);
5311 strncpy (buf, q, p - q);
5313 error ("%s", _(buf));
5318 /* %nfoo means report a notice with `foo' on stderr. */
5322 while (*p != 0 && *p != '\n')
5324 buf = (char *) alloca (p - q + 1);
5325 strncpy (buf, q, p - q);
5327 inform (UNKNOWN_LOCATION, "%s", _(buf));
5337 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
5338 defined, and it is not a directory, and it is
5339 writable, use it. Otherwise, treat this like any
5340 other temporary file. */
5342 if ((!save_temps_flag)
5343 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
5344 && (access (HOST_BIT_BUCKET, W_OK) == 0))
5346 obstack_grow (&obstack, HOST_BIT_BUCKET,
5347 strlen (HOST_BIT_BUCKET));
5348 delete_this_arg = 0;
5353 goto create_temp_file;
5357 obstack_1grow (&obstack, '-');
5358 delete_this_arg = 0;
5361 /* consume suffix */
5362 while (*p == '.' || ISALNUM ((unsigned char) *p))
5364 if (p[0] == '%' && p[1] == 'O')
5369 goto create_temp_file;
5373 /* consume suffix */
5374 while (*p == '.' || ISALNUM ((unsigned char) *p))
5376 if (p[0] == '%' && p[1] == 'O')
5381 goto create_temp_file;
5387 struct temp_name *t;
5389 const char *suffix = p;
5390 char *saved_suffix = NULL;
5392 while (*p == '.' || ISALNUM ((unsigned char) *p))
5394 suffix_length = p - suffix;
5395 if (p[0] == '%' && p[1] == 'O')
5398 /* We don't support extra suffix characters after %O. */
5399 if (*p == '.' || ISALNUM ((unsigned char) *p))
5400 fatal_error (input_location,
5401 "spec %qs has invalid %<%%0%c%>", spec, *p);
5402 if (suffix_length == 0)
5403 suffix = TARGET_OBJECT_SUFFIX;
5407 = XNEWVEC (char, suffix_length
5408 + strlen (TARGET_OBJECT_SUFFIX) + 1);
5409 strncpy (saved_suffix, suffix, suffix_length);
5410 strcpy (saved_suffix + suffix_length,
5411 TARGET_OBJECT_SUFFIX);
5413 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
5416 if (compare_debug < 0)
5418 suffix = concat (".gk", suffix, NULL);
5422 /* If -save-temps=obj and -o were specified, use that for the
5424 if (save_temps_length)
5427 temp_filename_length
5428 = save_temps_length + suffix_length + 1;
5429 tmp = (char *) alloca (temp_filename_length);
5430 memcpy (tmp, save_temps_prefix, save_temps_length);
5431 memcpy (tmp + save_temps_length, suffix, suffix_length);
5432 tmp[save_temps_length + suffix_length] = '\0';
5433 temp_filename = save_string (tmp, save_temps_length
5435 obstack_grow (&obstack, temp_filename,
5436 temp_filename_length);
5438 delete_this_arg = 0;
5442 /* If the gcc_input_filename has the same suffix specified
5443 for the %g, %u, or %U, and -save-temps is specified,
5444 we could end up using that file as an intermediate
5445 thus clobbering the user's source file (.e.g.,
5446 gcc -save-temps foo.s would clobber foo.s with the
5447 output of cpp0). So check for this condition and
5448 generate a temp file as the intermediate. */
5450 if (save_temps_flag)
5453 temp_filename_length = basename_length + suffix_length + 1;
5454 tmp = (char *) alloca (temp_filename_length);
5455 memcpy (tmp, input_basename, basename_length);
5456 memcpy (tmp + basename_length, suffix, suffix_length);
5457 tmp[basename_length + suffix_length] = '\0';
5458 temp_filename = tmp;
5460 if (filename_cmp (temp_filename, gcc_input_filename) != 0)
5462 #ifndef HOST_LACKS_INODE_NUMBERS
5463 struct stat st_temp;
5465 /* Note, set_input() resets input_stat_set to 0. */
5466 if (input_stat_set == 0)
5468 input_stat_set = stat (gcc_input_filename,
5470 if (input_stat_set >= 0)
5474 /* If we have the stat for the gcc_input_filename
5475 and we can do the stat for the temp_filename
5476 then the they could still refer to the same
5477 file if st_dev/st_ino's are the same. */
5478 if (input_stat_set != 1
5479 || stat (temp_filename, &st_temp) < 0
5480 || input_stat.st_dev != st_temp.st_dev
5481 || input_stat.st_ino != st_temp.st_ino)
5483 /* Just compare canonical pathnames. */
5484 char* input_realname = lrealpath (gcc_input_filename);
5485 char* temp_realname = lrealpath (temp_filename);
5486 bool files_differ = filename_cmp (input_realname, temp_realname);
5487 free (input_realname);
5488 free (temp_realname);
5493 = save_string (temp_filename,
5494 temp_filename_length - 1);
5495 obstack_grow (&obstack, temp_filename,
5496 temp_filename_length);
5498 delete_this_arg = 0;
5504 /* See if we already have an association of %g/%u/%U and
5506 for (t = temp_names; t; t = t->next)
5507 if (t->length == suffix_length
5508 && strncmp (t->suffix, suffix, suffix_length) == 0
5509 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
5512 /* Make a new association if needed. %u and %j
5514 if (t == 0 || c == 'u' || c == 'j')
5518 t = XNEW (struct temp_name);
5519 t->next = temp_names;
5522 t->length = suffix_length;
5525 t->suffix = saved_suffix;
5526 saved_suffix = NULL;
5529 t->suffix = save_string (suffix, suffix_length);
5530 t->unique = (c == 'u' || c == 'U' || c == 'j');
5531 temp_filename = make_temp_file (t->suffix);
5532 temp_filename_length = strlen (temp_filename);
5533 t->filename = temp_filename;
5534 t->filename_length = temp_filename_length;
5537 free (saved_suffix);
5539 obstack_grow (&obstack, t->filename, t->filename_length);
5540 delete_this_arg = 1;
5548 if (at_file_supplied)
5550 /* We are going to expand `%i' to `@FILE', where FILE
5551 is a newly-created temporary filename. The filenames
5552 that would usually be expanded in place of %o will be
5553 written to the temporary file. */
5558 for (i = 0; i < n_infiles; i++)
5559 if (compile_input_file_p (&infiles[i]))
5562 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
5564 /* Copy the strings over. */
5565 for (i = 0, j = 0; i < n_infiles; i++)
5566 if (compile_input_file_p (&infiles[i]))
5568 argv[j] = CONST_CAST (char *, infiles[i].name);
5569 infiles[i].compiled = true;
5574 create_at_file (argv);
5577 for (i = 0; (int) i < n_infiles; i++)
5578 if (compile_input_file_p (&infiles[i]))
5580 store_arg (infiles[i].name, 0, 0);
5581 infiles[i].compiled = true;
5586 obstack_grow (&obstack, gcc_input_filename,
5587 input_filename_length);
5594 struct spec_path_info info;
5598 do_spec_1 ("-imultilib", 1, NULL);
5599 /* Make this a separate argument. */
5600 do_spec_1 (" ", 0, NULL);
5601 do_spec_1 (multilib_dir, 1, NULL);
5602 do_spec_1 (" ", 0, NULL);
5607 do_spec_1 ("-imultiarch", 1, NULL);
5608 /* Make this a separate argument. */
5609 do_spec_1 (" ", 0, NULL);
5610 do_spec_1 (multiarch_dir, 1, NULL);
5611 do_spec_1 (" ", 0, NULL);
5614 if (gcc_exec_prefix)
5616 do_spec_1 ("-iprefix", 1, NULL);
5617 /* Make this a separate argument. */
5618 do_spec_1 (" ", 0, NULL);
5619 do_spec_1 (gcc_exec_prefix, 1, NULL);
5620 do_spec_1 (" ", 0, NULL);
5623 if (target_system_root_changed ||
5624 (target_system_root && target_sysroot_hdrs_suffix))
5626 do_spec_1 ("-isysroot", 1, NULL);
5627 /* Make this a separate argument. */
5628 do_spec_1 (" ", 0, NULL);
5629 do_spec_1 (target_system_root, 1, NULL);
5630 if (target_sysroot_hdrs_suffix)
5631 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
5632 do_spec_1 (" ", 0, NULL);
5635 info.option = "-isystem";
5636 info.append = "include";
5637 info.append_len = strlen (info.append);
5638 info.omit_relative = false;
5639 info.separate_options = true;
5641 for_each_path (&include_prefixes, false, info.append_len,
5644 info.append = "include-fixed";
5645 if (*sysroot_hdrs_suffix_spec)
5646 info.append = concat (info.append, dir_separator_str,
5647 multilib_dir, NULL);
5648 info.append_len = strlen (info.append);
5649 for_each_path (&include_prefixes, false, info.append_len,
5656 int max = n_infiles;
5657 max += lang_specific_extra_outfiles;
5659 if (HAVE_GNU_LD && at_file_supplied)
5661 /* We are going to expand `%o' to `@FILE', where FILE
5662 is a newly-created temporary filename. The filenames
5663 that would usually be expanded in place of %o will be
5664 written to the temporary file. */
5669 /* Convert OUTFILES into a form suitable for writeargv. */
5671 /* Determine how many are non-NULL. */
5672 for (n_files = 0, i = 0; i < max; i++)
5673 n_files += outfiles[i] != NULL;
5675 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
5677 /* Copy the strings over. */
5678 for (i = 0, j = 0; i < max; i++)
5681 argv[j] = CONST_CAST (char *, outfiles[i]);
5686 create_at_file (argv);
5689 for (i = 0; i < max; i++)
5691 store_arg (outfiles[i], 0, 0);
5696 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
5701 this_is_library_file = 1;
5705 this_is_linker_script = 1;
5709 outfiles[input_file_number] = NULL;
5713 this_is_output_file = 1;
5718 unsigned int cur_index = argbuf.length ();
5719 /* Handle the {...} following the %W. */
5721 fatal_error (input_location,
5722 "spec %qs has invalid %<%%W%c%>", spec, *p);
5723 p = handle_braces (p + 1);
5727 /* If any args were output, mark the last one for deletion
5729 if (argbuf.length () != cur_index)
5730 record_temp_file (argbuf.last (), 0, 1);
5734 /* %x{OPTION} records OPTION for %X to output. */
5742 /* Skip past the option value and make a copy. */
5744 fatal_error (input_location,
5745 "spec %qs has invalid %<%%x%c%>", spec, *p);
5748 string = save_string (p1 + 1, p - p1 - 2);
5750 /* See if we already recorded this option. */
5751 FOR_EACH_VEC_ELT (linker_options, ix, opt)
5752 if (! strcmp (string, opt))
5758 /* This option is new; add it. */
5759 add_linker_option (string, strlen (string));
5764 /* Dump out the options accumulated previously using %x. */
5766 do_specs_vec (linker_options);
5769 /* Dump out the options accumulated previously using -Wa,. */
5771 do_specs_vec (assembler_options);
5774 /* Dump out the options accumulated previously using -Wp,. */
5776 do_specs_vec (preprocessor_options);
5779 /* Here are digits and numbers that just process
5780 a certain constant string as a spec. */
5783 value = do_spec_1 (cc1_spec, 0, NULL);
5789 value = do_spec_1 (cc1plus_spec, 0, NULL);
5795 value = do_spec_1 (asm_spec, 0, NULL);
5801 value = do_spec_1 (asm_final_spec, 0, NULL);
5808 const char *const spec
5809 = (input_file_compiler->cpp_spec
5810 ? input_file_compiler->cpp_spec
5812 value = do_spec_1 (spec, 0, NULL);
5819 value = do_spec_1 (endfile_spec, 0, NULL);
5825 value = do_spec_1 (link_spec, 0, NULL);
5831 value = do_spec_1 (lib_spec, 0, NULL);
5837 if (multilib_os_dir == NULL)
5838 obstack_1grow (&obstack, '.');
5840 obstack_grow (&obstack, multilib_os_dir,
5841 strlen (multilib_os_dir));
5845 value = do_spec_1 (libgcc_spec, 0, NULL);
5851 /* We assume there is a directory
5852 separator at the end of this string. */
5853 if (target_system_root)
5855 obstack_grow (&obstack, target_system_root,
5856 strlen (target_system_root));
5857 if (target_sysroot_suffix)
5858 obstack_grow (&obstack, target_sysroot_suffix,
5859 strlen (target_sysroot_suffix));
5864 value = do_spec_1 (startfile_spec, 0, NULL);
5869 /* Here we define characters other than letters and digits. */
5872 p = handle_braces (p);
5878 p = handle_spec_function (p, NULL);
5884 obstack_1grow (&obstack, '%');
5891 while (p[len] && p[len] != ' ' && p[len] != '%')
5893 suffix_subst = save_string (p - 1, len + 1);
5898 /* Henceforth ignore the option(s) matching the pattern
5904 int have_wildcard = 0;
5909 switch_option = SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC;
5911 switch_option = SWITCH_IGNORE;
5913 while (p[len] && p[len] != ' ' && p[len] != '\t')
5916 if (p[len-1] == '*')
5919 for (i = 0; i < n_switches; i++)
5920 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5921 && (have_wildcard || switches[i].part1[len] == '\0'))
5923 switches[i].live_cond |= switch_option;
5924 /* User switch be validated from validate_all_switches.
5925 when the definition is seen from the spec file.
5926 If not defined anywhere, will be rejected. */
5927 if (switches[i].known)
5928 switches[i].validated = true;
5936 if (soft_matched_part)
5938 if (soft_matched_part[0])
5939 do_spec_1 (soft_matched_part, 1, NULL);
5940 /* Only insert a space after the substitution if it is at the
5941 end of the current sequence. So if:
5943 "%{foo=*:bar%*}%{foo=*:one%*two}"
5945 matches -foo=hello then it will produce:
5947 barhello onehellotwo
5949 if (*p == 0 || *p == '}')
5950 do_spec_1 (" ", 0, NULL);
5953 /* Catch the case where a spec string contains something like
5954 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5955 hand side of the :. */
5956 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5959 /* Process a string found as the value of a spec given by name.
5960 This feature allows individual machine descriptions
5961 to add and use their own specs. */
5964 const char *name = p;
5965 struct spec_list *sl;
5968 /* The string after the S/P is the name of a spec that is to be
5970 while (*p && *p != ')')
5973 /* See if it's in the list. */
5974 for (len = p - name, sl = specs; sl; sl = sl->next)
5975 if (sl->name_len == len && !strncmp (sl->name, name, len))
5977 name = *(sl->ptr_spec);
5979 fnotice (stderr, "Processing spec (%s), which is '%s'\n",
5987 value = do_spec_1 (name, 0, NULL);
5992 /* Discard the closing paren. */
5999 error ("spec failure: unrecognized spec option %qc", c);
6005 /* Backslash: treat next character as ordinary. */
6010 /* Ordinary character: put it into the current argument. */
6011 obstack_1grow (&obstack, c);
6015 /* End of string. If we are processing a spec function, we need to
6016 end any pending argument. */
6017 if (processing_spec_function)
6023 /* Look up a spec function. */
6025 static const struct spec_function *
6026 lookup_spec_function (const char *name)
6028 const struct spec_function *sf;
6030 for (sf = static_spec_functions; sf->name != NULL; sf++)
6031 if (strcmp (sf->name, name) == 0)
6037 /* Evaluate a spec function. */
6040 eval_spec_function (const char *func, const char *args)
6042 const struct spec_function *sf;
6043 const char *funcval;
6045 /* Saved spec processing context. */
6046 vec<const_char_p> save_argbuf;
6049 int save_delete_this_arg;
6050 int save_this_is_output_file;
6051 int save_this_is_library_file;
6052 int save_input_from_pipe;
6053 int save_this_is_linker_script;
6054 const char *save_suffix_subst;
6056 int save_growing_size;
6057 void *save_growing_value = NULL;
6059 sf = lookup_spec_function (func);
6061 fatal_error (input_location, "unknown spec function %qs", func);
6063 /* Push the spec processing context. */
6064 save_argbuf = argbuf;
6066 save_arg_going = arg_going;
6067 save_delete_this_arg = delete_this_arg;
6068 save_this_is_output_file = this_is_output_file;
6069 save_this_is_library_file = this_is_library_file;
6070 save_this_is_linker_script = this_is_linker_script;
6071 save_input_from_pipe = input_from_pipe;
6072 save_suffix_subst = suffix_subst;
6074 /* If we have some object growing now, finalize it so the args and function
6075 eval proceed from a cleared context. This is needed to prevent the first
6076 constructed arg from mistakenly including the growing value. We'll push
6077 this value back on the obstack once the function evaluation is done, to
6078 restore a consistent processing context for our caller. This is fine as
6079 the address of growing objects isn't guaranteed to remain stable until
6080 they are finalized, and we expect this situation to be rare enough for
6081 the extra copy not to be an issue. */
6082 save_growing_size = obstack_object_size (&obstack);
6083 if (save_growing_size > 0)
6084 save_growing_value = obstack_finish (&obstack);
6086 /* Create a new spec processing context, and build the function
6090 if (do_spec_2 (args) < 0)
6091 fatal_error (input_location, "error in args to spec function %qs", func);
6093 /* argbuf_index is an index for the next argument to be inserted, and
6094 so contains the count of the args already inserted. */
6096 funcval = (*sf->func) (argbuf.length (),
6099 /* Pop the spec processing context. */
6101 argbuf = save_argbuf;
6103 arg_going = save_arg_going;
6104 delete_this_arg = save_delete_this_arg;
6105 this_is_output_file = save_this_is_output_file;
6106 this_is_library_file = save_this_is_library_file;
6107 this_is_linker_script = save_this_is_linker_script;
6108 input_from_pipe = save_input_from_pipe;
6109 suffix_subst = save_suffix_subst;
6111 if (save_growing_size > 0)
6112 obstack_grow (&obstack, save_growing_value, save_growing_size);
6117 /* Handle a spec function call of the form:
6121 ARGS is processed as a spec in a separate context and split into an
6122 argument vector in the normal fashion. The function returns a string
6123 containing a spec which we then process in the caller's context, or
6124 NULL if no processing is required.
6126 If RETVAL_NONNULL is not NULL, then store a bool whether function
6127 returned non-NULL. */
6130 handle_spec_function (const char *p, bool *retval_nonnull)
6133 const char *endp, *funcval;
6136 processing_spec_function++;
6138 /* Get the function name. */
6139 for (endp = p; *endp != '\0'; endp++)
6141 if (*endp == '(') /* ) */
6143 /* Only allow [A-Za-z0-9], -, and _ in function names. */
6144 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
6145 fatal_error (input_location, "malformed spec function name");
6147 if (*endp != '(') /* ) */
6148 fatal_error (input_location, "no arguments for spec function");
6149 func = save_string (p, endp - p);
6152 /* Get the arguments. */
6153 for (count = 0; *endp != '\0'; endp++)
6162 else if (*endp == '(') /* ) */
6167 fatal_error (input_location, "malformed spec function arguments");
6168 args = save_string (p, endp - p);
6171 /* p now points to just past the end of the spec function expression. */
6173 funcval = eval_spec_function (func, args);
6174 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
6177 *retval_nonnull = funcval != NULL;
6182 processing_spec_function--;
6187 /* Inline subroutine of handle_braces. Returns true if the current
6188 input suffix matches the atom bracketed by ATOM and END_ATOM. */
6190 input_suffix_matches (const char *atom, const char *end_atom)
6192 return (input_suffix
6193 && !strncmp (input_suffix, atom, end_atom - atom)
6194 && input_suffix[end_atom - atom] == '\0');
6197 /* Subroutine of handle_braces. Returns true if the current
6198 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
6200 input_spec_matches (const char *atom, const char *end_atom)
6202 return (input_file_compiler
6203 && input_file_compiler->suffix
6204 && input_file_compiler->suffix[0] != '\0'
6205 && !strncmp (input_file_compiler->suffix + 1, atom,
6207 && input_file_compiler->suffix[end_atom - atom + 1] == '\0');
6210 /* Subroutine of handle_braces. Returns true if a switch
6211 matching the atom bracketed by ATOM and END_ATOM appeared on the
6214 switch_matches (const char *atom, const char *end_atom, int starred)
6217 int len = end_atom - atom;
6218 int plen = starred ? len : -1;
6220 for (i = 0; i < n_switches; i++)
6221 if (!strncmp (switches[i].part1, atom, len)
6222 && (starred || switches[i].part1[len] == '\0')
6223 && check_live_switch (i, plen))
6226 /* Check if a switch with separated form matching the atom.
6227 We check -D and -U switches. */
6228 else if (switches[i].args != 0)
6230 if ((*switches[i].part1 == 'D' || *switches[i].part1 == 'U')
6231 && *switches[i].part1 == atom[0])
6233 if (!strncmp (switches[i].args[0], &atom[1], len - 1)
6234 && (starred || (switches[i].part1[1] == '\0'
6235 && switches[i].args[0][len - 1] == '\0'))
6236 && check_live_switch (i, (starred ? 1 : -1)))
6244 /* Inline subroutine of handle_braces. Mark all of the switches which
6245 match ATOM (extends to END_ATOM; STARRED indicates whether there
6246 was a star after the atom) for later processing. */
6248 mark_matching_switches (const char *atom, const char *end_atom, int starred)
6251 int len = end_atom - atom;
6252 int plen = starred ? len : -1;
6254 for (i = 0; i < n_switches; i++)
6255 if (!strncmp (switches[i].part1, atom, len)
6256 && (starred || switches[i].part1[len] == '\0')
6257 && check_live_switch (i, plen))
6258 switches[i].ordering = 1;
6261 /* Inline subroutine of handle_braces. Process all the currently
6262 marked switches through give_switch, and clear the marks. */
6264 process_marked_switches (void)
6268 for (i = 0; i < n_switches; i++)
6269 if (switches[i].ordering == 1)
6271 switches[i].ordering = 0;
6276 /* Handle a %{ ... } construct. P points just inside the leading {.
6277 Returns a pointer one past the end of the brace block, or 0
6278 if we call do_spec_1 and that returns -1. */
6281 handle_braces (const char *p)
6283 const char *atom, *end_atom;
6284 const char *d_atom = NULL, *d_end_atom = NULL;
6285 char *esc_buf = NULL, *d_esc_buf = NULL;
6287 const char *orig = p;
6295 bool a_must_be_last = false;
6296 bool ordered_set = false;
6297 bool disjunct_set = false;
6298 bool disj_matched = false;
6299 bool disj_starred = true;
6300 bool n_way_choice = false;
6301 bool n_way_matched = false;
6303 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
6310 /* Scan one "atom" (S in the description above of %{}, possibly
6311 with '!', '.', '@', ',', or '*' modifiers). */
6313 a_is_suffix = false;
6314 a_is_starred = false;
6315 a_is_negated = false;
6316 a_is_spectype = false;
6320 p++, a_is_negated = true;
6323 if (*p == '%' && p[1] == ':')
6327 p = handle_spec_function (p + 2, &a_matched);
6332 p++, a_is_suffix = true;
6334 p++, a_is_spectype = true;
6338 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
6339 || *p == ',' || *p == '.' || *p == '@' || *p == '\\')
6345 fatal_error (input_location,
6346 "braced spec %qs ends in escape", orig);
6358 if (esc_buf && esc_buf != d_esc_buf)
6361 ep = esc_buf = (char *) xmalloc (end_atom - atom - esc + 1);
6362 for (ap = atom; ap != end_atom; ap++, ep++)
6374 p++, a_is_starred = 1;
6381 /* Substitute the switch(es) indicated by the current atom. */
6383 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
6384 || a_is_spectype || atom == end_atom)
6387 mark_matching_switches (atom, end_atom, a_is_starred);
6390 process_marked_switches ();
6394 /* Substitute some text if the current atom appears as a switch
6396 disjunct_set = true;
6400 if (atom && atom == end_atom)
6402 if (!n_way_choice || disj_matched || *p == '|'
6403 || a_is_negated || a_is_suffix || a_is_spectype
6407 /* An empty term may appear as the last choice of an
6408 N-way choice set; it means "otherwise". */
6409 a_must_be_last = true;
6410 disj_matched = !n_way_matched;
6411 disj_starred = false;
6415 if ((a_is_suffix || a_is_spectype) && a_is_starred)
6419 disj_starred = false;
6421 /* Don't bother testing this atom if we already have a
6423 if (!disj_matched && !n_way_matched)
6426 /* a_matched is already set by handle_spec_function. */;
6427 else if (a_is_suffix)
6428 a_matched = input_suffix_matches (atom, end_atom);
6429 else if (a_is_spectype)
6430 a_matched = input_spec_matches (atom, end_atom);
6432 a_matched = switch_matches (atom, end_atom, a_is_starred);
6434 if (a_matched != a_is_negated)
6436 disj_matched = true;
6438 d_end_atom = end_atom;
6439 d_esc_buf = esc_buf;
6446 /* Found the body, that is, the text to substitute if the
6447 current disjunction matches. */
6448 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
6449 disj_matched && !n_way_matched);
6453 /* If we have an N-way choice, reset state for the next
6457 n_way_choice = true;
6458 n_way_matched |= disj_matched;
6459 disj_matched = false;
6460 disj_starred = true;
6461 d_atom = d_end_atom = NULL;
6470 while (*p++ != '}');
6473 if (d_esc_buf && d_esc_buf != esc_buf)
6481 fatal_error (input_location, "braced spec %qs is invalid at %qc", orig, *p);
6486 /* Subroutine of handle_braces. Scan and process a brace substitution body
6487 (X in the description of %{} syntax). P points one past the colon;
6488 ATOM and END_ATOM bracket the first atom which was found to be true
6489 (present) in the current disjunction; STARRED indicates whether all
6490 the atoms in the current disjunction were starred (for syntax validation);
6491 MATCHED indicates whether the disjunction matched or not, and therefore
6492 whether or not the body is to be processed through do_spec_1 or just
6493 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
6497 process_brace_body (const char *p, const char *atom, const char *end_atom,
6498 int starred, int matched)
6500 const char *body, *end_body;
6501 unsigned int nesting_level;
6502 bool have_subst = false;
6504 /* Locate the closing } or ;, honoring nested braces.
6505 Trim trailing whitespace. */
6514 if (!--nesting_level)
6517 else if (*p == ';' && nesting_level == 1)
6519 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
6521 else if (*p == '\0')
6527 while (end_body[-1] == ' ' || end_body[-1] == '\t')
6530 if (have_subst && !starred)
6535 /* Copy the substitution body to permanent storage and execute it.
6536 If have_subst is false, this is a simple matter of running the
6537 body through do_spec_1... */
6538 char *string = save_string (body, end_body - body);
6541 if (do_spec_1 (string, 0, NULL) < 0)
6549 /* ... but if have_subst is true, we have to process the
6550 body once for each matching switch, with %* set to the
6551 variant part of the switch. */
6552 unsigned int hard_match_len = end_atom - atom;
6555 for (i = 0; i < n_switches; i++)
6556 if (!strncmp (switches[i].part1, atom, hard_match_len)
6557 && check_live_switch (i, hard_match_len))
6559 if (do_spec_1 (string, 0,
6560 &switches[i].part1[hard_match_len]) < 0)
6565 /* Pass any arguments this switch has. */
6567 suffix_subst = NULL;
6576 fatal_error (input_location, "braced spec body %qs is invalid", body);
6579 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
6580 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
6581 spec, or -1 if either exact match or %* is used.
6583 A -O switch is obsoleted by a later -O switch. A -f, -g, -m, or -W switch
6584 whose value does not begin with "no-" is obsoleted by the same value
6585 with the "no-", similarly for a switch with the "no-" prefix. */
6588 check_live_switch (int switchnum, int prefix_length)
6590 const char *name = switches[switchnum].part1;
6593 /* If we already processed this switch and determined if it was
6594 live or not, return our past determination. */
6595 if (switches[switchnum].live_cond != 0)
6596 return ((switches[switchnum].live_cond & SWITCH_LIVE) != 0
6597 && (switches[switchnum].live_cond & SWITCH_FALSE) == 0
6598 && (switches[switchnum].live_cond & SWITCH_IGNORE_PERMANENTLY)
6601 /* In the common case of {<at-most-one-letter>*}, a negating
6602 switch would always match, so ignore that case. We will just
6603 send the conflicting switches to the compiler phase. */
6604 if (prefix_length >= 0 && prefix_length <= 1)
6607 /* Now search for duplicate in a manner that depends on the name. */
6611 for (i = switchnum + 1; i < n_switches; i++)
6612 if (switches[i].part1[0] == 'O')
6614 switches[switchnum].validated = true;
6615 switches[switchnum].live_cond = SWITCH_FALSE;
6620 case 'W': case 'f': case 'm': case 'g':
6621 if (! strncmp (name + 1, "no-", 3))
6623 /* We have Xno-YYY, search for XYYY. */
6624 for (i = switchnum + 1; i < n_switches; i++)
6625 if (switches[i].part1[0] == name[0]
6626 && ! strcmp (&switches[i].part1[1], &name[4]))
6628 /* --specs are validated with the validate_switches mechanism. */
6629 if (switches[switchnum].known)
6630 switches[switchnum].validated = true;
6631 switches[switchnum].live_cond = SWITCH_FALSE;
6637 /* We have XYYY, search for Xno-YYY. */
6638 for (i = switchnum + 1; i < n_switches; i++)
6639 if (switches[i].part1[0] == name[0]
6640 && switches[i].part1[1] == 'n'
6641 && switches[i].part1[2] == 'o'
6642 && switches[i].part1[3] == '-'
6643 && !strcmp (&switches[i].part1[4], &name[1]))
6645 /* --specs are validated with the validate_switches mechanism. */
6646 if (switches[switchnum].known)
6647 switches[switchnum].validated = true;
6648 switches[switchnum].live_cond = SWITCH_FALSE;
6655 /* Otherwise the switch is live. */
6656 switches[switchnum].live_cond |= SWITCH_LIVE;
6660 /* Pass a switch to the current accumulating command
6661 in the same form that we received it.
6662 SWITCHNUM identifies the switch; it is an index into
6663 the vector of switches gcc received, which is `switches'.
6664 This cannot fail since it never finishes a command line.
6666 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
6669 give_switch (int switchnum, int omit_first_word)
6671 if ((switches[switchnum].live_cond & SWITCH_IGNORE) != 0)
6674 if (!omit_first_word)
6676 do_spec_1 ("-", 0, NULL);
6677 do_spec_1 (switches[switchnum].part1, 1, NULL);
6680 if (switches[switchnum].args != 0)
6683 for (p = switches[switchnum].args; *p; p++)
6685 const char *arg = *p;
6687 do_spec_1 (" ", 0, NULL);
6690 unsigned length = strlen (arg);
6693 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
6694 if (arg[length] == '.')
6696 (CONST_CAST (char *, arg))[length] = 0;
6700 do_spec_1 (arg, 1, NULL);
6702 (CONST_CAST (char *, arg))[length] = '.';
6703 do_spec_1 (suffix_subst, 1, NULL);
6706 do_spec_1 (arg, 1, NULL);
6710 do_spec_1 (" ", 0, NULL);
6711 switches[switchnum].validated = true;
6714 /* Print GCC configuration (e.g. version, thread model, target,
6715 configuration_arguments) to a given FILE. */
6718 print_configuration (FILE *file)
6723 fnotice (file, "Target: %s\n", spec_machine);
6724 fnotice (file, "Configured with: %s\n", configuration_arguments);
6726 #ifdef THREAD_MODEL_SPEC
6727 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6728 but there's no point in doing all this processing just to get
6729 thread_model back. */
6730 obstack_init (&obstack);
6731 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6732 obstack_1grow (&obstack, '\0');
6733 thrmod = XOBFINISH (&obstack, const char *);
6735 thrmod = thread_model;
6738 fnotice (file, "Thread model: %s\n", thrmod);
6740 /* compiler_version is truncated at the first space when initialized
6741 from version string, so truncate version_string at the first space
6742 before comparing. */
6743 for (n = 0; version_string[n]; n++)
6744 if (version_string[n] == ' ')
6747 if (! strncmp (version_string, compiler_version, n)
6748 && compiler_version[n] == 0)
6749 fnotice (file, "gcc version %s %s\n", version_string,
6752 fnotice (file, "gcc driver version %s %sexecuting gcc version %s\n",
6753 version_string, pkgversion_string, compiler_version);
6757 #define RETRY_ICE_ATTEMPTS 3
6759 /* Returns true if FILE1 and FILE2 contain equivalent data, 0 otherwise. */
6762 files_equal_p (char *file1, char *file2)
6764 struct stat st1, st2;
6767 const int bufsize = 8192;
6768 char *buf = XNEWVEC (char, bufsize);
6770 fd1 = open (file1, O_RDONLY);
6771 fd2 = open (file2, O_RDONLY);
6773 if (fd1 < 0 || fd2 < 0)
6776 if (fstat (fd1, &st1) < 0 || fstat (fd2, &st2) < 0)
6779 if (st1.st_size != st2.st_size)
6782 for (n = st1.st_size; n; n -= len)
6785 if ((int) len > bufsize / 2)
6788 if (read (fd1, buf, len) != (int) len
6789 || read (fd2, buf + bufsize / 2, len) != (int) len)
6794 if (memcmp (buf, buf + bufsize / 2, len) != 0)
6811 /* Check that compiler's output doesn't differ across runs.
6812 TEMP_STDOUT_FILES and TEMP_STDERR_FILES are arrays of files, containing
6813 stdout and stderr for each compiler run. Return true if all of
6814 TEMP_STDOUT_FILES and TEMP_STDERR_FILES are equivalent. */
6817 check_repro (char **temp_stdout_files, char **temp_stderr_files)
6820 for (i = 0; i < RETRY_ICE_ATTEMPTS - 2; ++i)
6822 if (!files_equal_p (temp_stdout_files[i], temp_stdout_files[i + 1])
6823 || !files_equal_p (temp_stderr_files[i], temp_stderr_files[i + 1]))
6825 fnotice (stderr, "The bug is not reproducible, so it is"
6826 " likely a hardware or OS problem.\n");
6830 return i == RETRY_ICE_ATTEMPTS - 2;
6833 enum attempt_status {
6834 ATTEMPT_STATUS_FAIL_TO_RUN,
6835 ATTEMPT_STATUS_SUCCESS,
6840 /* Run compiler with arguments NEW_ARGV to reproduce the ICE, storing stdout
6841 to OUT_TEMP and stderr to ERR_TEMP. If APPEND is TRUE, append to OUT_TEMP
6842 and ERR_TEMP instead of truncating. If EMIT_SYSTEM_INFO is TRUE, also write
6843 GCC configuration into to ERR_TEMP. Return ATTEMPT_STATUS_FAIL_TO_RUN if
6844 compiler failed to run, ATTEMPT_STATUS_ICE if compiled ICE-ed and
6845 ATTEMPT_STATUS_SUCCESS otherwise. */
6847 static enum attempt_status
6848 run_attempt (const char **new_argv, const char *out_temp,
6849 const char *err_temp, int emit_system_info, int append)
6852 if (emit_system_info)
6854 FILE *file_out = fopen (err_temp, "a");
6855 print_configuration (file_out);
6856 fputs ("\n", file_out);
6862 struct pex_obj *pex;
6864 int pex_flags = PEX_USE_PIPES | PEX_LAST;
6865 enum attempt_status status = ATTEMPT_STATUS_FAIL_TO_RUN;
6868 pex_flags |= PEX_STDOUT_APPEND | PEX_STDERR_APPEND;
6870 pex = pex_init (PEX_USE_PIPES, new_argv[0], NULL);
6872 fatal_error (input_location, "pex_init failed: %m");
6874 errmsg = pex_run (pex, pex_flags, new_argv[0],
6875 CONST_CAST2 (char *const *, const char **, &new_argv[1]), out_temp,
6880 fatal_error (input_location, errmsg);
6884 pfatal_with_name (errmsg);
6888 if (!pex_get_status (pex, 1, &exit_status))
6891 switch (WEXITSTATUS (exit_status))
6894 status = ATTEMPT_STATUS_ICE;
6897 case SUCCESS_EXIT_CODE:
6898 status = ATTEMPT_STATUS_SUCCESS;
6910 /* This routine reads lines from IN file, adds C++ style comments
6911 at the begining of each line and writes result into OUT. */
6914 insert_comments (const char *file_in, const char *file_out)
6916 FILE *in = fopen (file_in, "rb");
6917 FILE *out = fopen (file_out, "wb");
6920 bool add_comment = true;
6921 while (fgets (line, sizeof (line), in))
6926 add_comment = strchr (line, '\n') != NULL;
6933 /* This routine adds preprocessed source code into the given ERR_FILE.
6934 To do this, it adds "-E" to NEW_ARGV and execute RUN_ATTEMPT routine to
6935 add information in report file. RUN_ATTEMPT should return
6936 ATTEMPT_STATUS_SUCCESS, in other case we cannot generate the report. */
6939 do_report_bug (const char **new_argv, const int nargs,
6940 char **out_file, char **err_file)
6943 int fd = open (*out_file, O_RDWR | O_APPEND);
6946 write (fd, "\n//", 3);
6947 for (i = 0; i < nargs; i++)
6950 write (fd, new_argv[i], strlen (new_argv[i]));
6952 write (fd, "\n\n", 2);
6954 new_argv[nargs] = "-E";
6955 new_argv[nargs + 1] = NULL;
6957 status = run_attempt (new_argv, *out_file, *err_file, 0, 1);
6959 if (status == ATTEMPT_STATUS_SUCCESS)
6961 fnotice (stderr, "Preprocessed source stored into %s file,"
6962 " please attach this to your bugreport.\n", *out_file);
6963 /* Make sure it is not deleted. */
6969 /* Try to reproduce ICE. If bug is reproducible, generate report .err file
6970 containing GCC configuration, backtrace, compiler's command line options
6971 and preprocessed source code. */
6974 try_generate_repro (const char **argv)
6976 int i, nargs, out_arg = -1, quiet = 0, attempt;
6977 const char **new_argv;
6978 char *temp_files[RETRY_ICE_ATTEMPTS * 2];
6979 char **temp_stdout_files = &temp_files[0];
6980 char **temp_stderr_files = &temp_files[RETRY_ICE_ATTEMPTS];
6982 if (gcc_input_filename == NULL || ! strcmp (gcc_input_filename, "-"))
6985 for (nargs = 0; argv[nargs] != NULL; ++nargs)
6986 /* Only retry compiler ICEs, not preprocessor ones. */
6987 if (! strcmp (argv[nargs], "-E"))
6989 else if (argv[nargs][0] == '-' && argv[nargs][1] == 'o')
6996 /* If the compiler is going to output any time information,
6997 it might varry between invocations. */
6998 else if (! strcmp (argv[nargs], "-quiet"))
7000 else if (! strcmp (argv[nargs], "-ftime-report"))
7003 if (out_arg == -1 || !quiet)
7006 memset (temp_files, '\0', sizeof (temp_files));
7007 new_argv = XALLOCAVEC (const char *, nargs + 4);
7008 memcpy (new_argv, argv, (nargs + 1) * sizeof (const char *));
7009 new_argv[nargs++] = "-frandom-seed=0";
7010 new_argv[nargs++] = "-fdump-noaddr";
7011 new_argv[nargs] = NULL;
7012 if (new_argv[out_arg][2] == '\0')
7013 new_argv[out_arg + 1] = "-";
7015 new_argv[out_arg] = "-o-";
7018 for (attempt = 0; attempt < RETRY_ICE_ATTEMPTS; ++attempt)
7020 int emit_system_info = 0;
7022 temp_stdout_files[attempt] = make_temp_file (".out");
7023 temp_stderr_files[attempt] = make_temp_file (".err");
7025 if (attempt == RETRY_ICE_ATTEMPTS - 1)
7028 emit_system_info = 1;
7031 status = run_attempt (new_argv, temp_stdout_files[attempt],
7032 temp_stderr_files[attempt], emit_system_info,
7035 if (status != ATTEMPT_STATUS_ICE)
7037 fnotice (stderr, "The bug is not reproducible, so it is"
7038 " likely a hardware or OS problem.\n");
7043 if (!check_repro (temp_stdout_files, temp_stderr_files))
7047 /* Insert commented out backtrace into report file. */
7048 char **stderr_commented = &temp_stdout_files[RETRY_ICE_ATTEMPTS - 1];
7049 insert_comments (temp_stderr_files[RETRY_ICE_ATTEMPTS - 1],
7052 /* In final attempt we append compiler options and preprocesssed code to last
7053 generated .out file with configuration and backtrace. */
7054 char **err = &temp_stderr_files[RETRY_ICE_ATTEMPTS - 1];
7055 do_report_bug (new_argv, nargs, stderr_commented, err);
7059 for (i = 0; i < RETRY_ICE_ATTEMPTS * 2; i++)
7062 unlink (temp_stdout_files[i]);
7063 free (temp_stdout_files[i]);
7067 /* Search for a file named NAME trying various prefixes including the
7068 user's -B prefix and some standard ones.
7069 Return the absolute file name found. If nothing is found, return NAME. */
7072 find_file (const char *name)
7074 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true);
7075 return newname ? newname : name;
7078 /* Determine whether a directory exists. If LINKER, return 0 for
7079 certain fixed names not needed by the linker. */
7082 is_directory (const char *path1, bool linker)
7089 /* Ensure the string ends with "/.". The resulting path will be a
7090 directory even if the given path is a symbolic link. */
7091 len1 = strlen (path1);
7092 path = (char *) alloca (3 + len1);
7093 memcpy (path, path1, len1);
7095 if (!IS_DIR_SEPARATOR (cp[-1]))
7096 *cp++ = DIR_SEPARATOR;
7100 /* Exclude directories that the linker is known to search. */
7102 && IS_DIR_SEPARATOR (path[0])
7104 && filename_ncmp (path + 1, "lib", 3) == 0)
7106 && filename_ncmp (path + 1, "usr", 3) == 0
7107 && IS_DIR_SEPARATOR (path[4])
7108 && filename_ncmp (path + 5, "lib", 3) == 0)))
7111 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
7114 /* Set up the various global variables to indicate that we're processing
7115 the input file named FILENAME. */
7118 set_input (const char *filename)
7122 gcc_input_filename = filename;
7123 input_filename_length = strlen (gcc_input_filename);
7124 input_basename = lbasename (gcc_input_filename);
7126 /* Find a suffix starting with the last period,
7127 and set basename_length to exclude that suffix. */
7128 basename_length = strlen (input_basename);
7129 suffixed_basename_length = basename_length;
7130 p = input_basename + basename_length;
7131 while (p != input_basename && *p != '.')
7133 if (*p == '.' && p != input_basename)
7135 basename_length = p - input_basename;
7136 input_suffix = p + 1;
7141 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
7142 we will need to do a stat on the gcc_input_filename. The
7143 INPUT_STAT_SET signals that the stat is needed. */
7147 /* On fatal signals, delete all the temporary files. */
7150 fatal_signal (int signum)
7152 signal (signum, SIG_DFL);
7153 delete_failure_queue ();
7154 delete_temp_files ();
7155 /* Get the same signal again, this time not handled,
7156 so its normal effect occurs. */
7157 kill (getpid (), signum);
7160 /* Compare the contents of the two files named CMPFILE[0] and
7161 CMPFILE[1]. Return zero if they're identical, nonzero
7165 compare_files (char *cmpfile[])
7168 FILE *temp[2] = { NULL, NULL };
7174 void *map[2] = { NULL, NULL };
7176 for (i = 0; i < 2; i++)
7180 if (stat (cmpfile[i], &st) < 0 || !S_ISREG (st.st_mode))
7182 error ("%s: could not determine length of compare-debug file %s",
7183 gcc_input_filename, cmpfile[i]);
7188 length[i] = st.st_size;
7191 if (!ret && length[0] != length[1])
7193 error ("%s: -fcompare-debug failure (length)", gcc_input_filename);
7198 for (i = 0; i < 2; i++)
7200 int fd = open (cmpfile[i], O_RDONLY);
7203 error ("%s: could not open compare-debug file %s",
7204 gcc_input_filename, cmpfile[i]);
7209 map[i] = mmap (NULL, length[i], PROT_READ, MAP_PRIVATE, fd, 0);
7212 if (map[i] == (void *) MAP_FAILED)
7221 if (memcmp (map[0], map[1], length[0]) != 0)
7223 error ("%s: -fcompare-debug failure", gcc_input_filename);
7228 for (i = 0; i < 2; i++)
7230 munmap ((caddr_t) map[i], length[i]);
7239 for (i = 0; i < 2; i++)
7241 temp[i] = fopen (cmpfile[i], "r");
7244 error ("%s: could not open compare-debug file %s",
7245 gcc_input_filename, cmpfile[i]);
7251 if (!ret && temp[0] && temp[1])
7255 c0 = fgetc (temp[0]);
7256 c1 = fgetc (temp[1]);
7260 error ("%s: -fcompare-debug failure",
7261 gcc_input_filename);
7270 for (i = 1; i >= 0; i--)
7279 driver::driver (bool can_finalize, bool debug) :
7280 explicit_link_files (NULL),
7281 decoded_options (NULL),
7282 m_option_suggestions (NULL)
7284 env.init (can_finalize, debug);
7289 XDELETEVEC (explicit_link_files);
7290 XDELETEVEC (decoded_options);
7291 if (m_option_suggestions)
7295 FOR_EACH_VEC_ELT (*m_option_suggestions, i, str)
7297 delete m_option_suggestions;
7301 /* driver::main is implemented as a series of driver:: method calls. */
7304 driver::main (int argc, char **argv)
7308 set_progname (argv[0]);
7309 expand_at_files (&argc, &argv);
7310 decode_argv (argc, const_cast <const char **> (argv));
7311 global_initializations ();
7312 build_multilib_strings ();
7314 putenv_COLLECT_GCC (argv[0]);
7315 maybe_putenv_COLLECT_LTO_WRAPPER ();
7316 maybe_putenv_OFFLOAD_TARGETS ();
7317 handle_unrecognized_options ();
7319 if (!maybe_print_and_exit ())
7322 early_exit = prepare_infiles ();
7324 return get_exit_code ();
7326 do_spec_on_infiles ();
7327 maybe_run_linker (argv[0]);
7329 return get_exit_code ();
7332 /* Locate the final component of argv[0] after any leading path, and set
7333 the program name accordingly. */
7336 driver::set_progname (const char *argv0) const
7338 const char *p = argv0 + strlen (argv0);
7339 while (p != argv0 && !IS_DIR_SEPARATOR (p[-1]))
7343 xmalloc_set_program_name (progname);
7346 /* Expand any @ files within the command-line args,
7347 setting at_file_supplied if any were expanded. */
7350 driver::expand_at_files (int *argc, char ***argv) const
7352 char **old_argv = *argv;
7354 expandargv (argc, argv);
7356 /* Determine if any expansions were made. */
7357 if (*argv != old_argv)
7358 at_file_supplied = true;
7361 /* Decode the command-line arguments from argc/argv into the
7362 decoded_options array. */
7365 driver::decode_argv (int argc, const char **argv)
7367 /* Register the language-independent parameters. */
7368 global_init_params ();
7371 init_opts_obstack ();
7372 init_options_struct (&global_options, &global_options_set);
7374 decode_cmdline_options_to_array (argc, argv,
7376 &decoded_options, &decoded_options_count);
7379 /* Perform various initializations and setup. */
7382 driver::global_initializations ()
7384 /* Unlock the stdio streams. */
7385 unlock_std_streams ();
7387 gcc_init_libintl ();
7389 diagnostic_initialize (global_dc, 0);
7390 diagnostic_color_init (global_dc);
7392 #ifdef GCC_DRIVER_HOST_INITIALIZATION
7393 /* Perform host dependent initialization when needed. */
7394 GCC_DRIVER_HOST_INITIALIZATION;
7397 if (atexit (delete_temp_files) != 0)
7398 fatal_error (input_location, "atexit failed");
7400 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
7401 signal (SIGINT, fatal_signal);
7403 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
7404 signal (SIGHUP, fatal_signal);
7406 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
7407 signal (SIGTERM, fatal_signal);
7409 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
7410 signal (SIGPIPE, fatal_signal);
7413 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
7414 receive the signal. A different setting is inheritable */
7415 signal (SIGCHLD, SIG_DFL);
7418 /* Parsing and gimplification sometimes need quite large stack.
7419 Increase stack size limits if possible. */
7420 stack_limit_increase (64 * 1024 * 1024);
7422 /* Allocate the argument vector. */
7425 obstack_init (&obstack);
7428 /* Build multilib_select, et. al from the separate lines that make up each
7429 multilib selection. */
7432 driver::build_multilib_strings () const
7436 const char *const *q = multilib_raw;
7439 obstack_init (&multilib_obstack);
7440 while ((p = *q++) != (char *) 0)
7441 obstack_grow (&multilib_obstack, p, strlen (p));
7443 obstack_1grow (&multilib_obstack, 0);
7444 multilib_select = XOBFINISH (&multilib_obstack, const char *);
7446 q = multilib_matches_raw;
7447 while ((p = *q++) != (char *) 0)
7448 obstack_grow (&multilib_obstack, p, strlen (p));
7450 obstack_1grow (&multilib_obstack, 0);
7451 multilib_matches = XOBFINISH (&multilib_obstack, const char *);
7453 q = multilib_exclusions_raw;
7454 while ((p = *q++) != (char *) 0)
7455 obstack_grow (&multilib_obstack, p, strlen (p));
7457 obstack_1grow (&multilib_obstack, 0);
7458 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *);
7460 q = multilib_reuse_raw;
7461 while ((p = *q++) != (char *) 0)
7462 obstack_grow (&multilib_obstack, p, strlen (p));
7464 obstack_1grow (&multilib_obstack, 0);
7465 multilib_reuse = XOBFINISH (&multilib_obstack, const char *);
7468 for (size_t i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
7471 obstack_1grow (&multilib_obstack, ' ');
7472 obstack_grow (&multilib_obstack,
7473 multilib_defaults_raw[i],
7474 strlen (multilib_defaults_raw[i]));
7478 obstack_1grow (&multilib_obstack, 0);
7479 multilib_defaults = XOBFINISH (&multilib_obstack, const char *);
7483 /* Set up the spec-handling machinery. */
7486 driver::set_up_specs () const
7488 const char *spec_machine_suffix;
7492 #ifdef INIT_ENVIRONMENT
7493 /* Set up any other necessary machine specific environment variables. */
7494 xputenv (INIT_ENVIRONMENT);
7497 /* Make a table of what switches there are (switches, n_switches).
7498 Make a table of specified input files (infiles, n_infiles).
7499 Decode switches that are handled locally. */
7501 process_command (decoded_options_count, decoded_options);
7503 /* Initialize the vector of specs to just the default.
7504 This means one element containing 0s, as a terminator. */
7506 compilers = XNEWVAR (struct compiler, sizeof default_compilers);
7507 memcpy (compilers, default_compilers, sizeof default_compilers);
7508 n_compilers = n_default_compilers;
7510 /* Read specs from a file if there is one. */
7512 machine_suffix = concat (spec_host_machine, dir_separator_str, spec_version,
7513 accel_dir_suffix, dir_separator_str, NULL);
7514 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
7516 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true);
7517 /* Read the specs file unless it is a default one. */
7518 if (specs_file != 0 && strcmp (specs_file, "specs"))
7519 read_specs (specs_file, true, false);
7523 #ifdef ACCEL_COMPILER
7524 spec_machine_suffix = machine_suffix;
7526 spec_machine_suffix = just_machine_suffix;
7529 /* We need to check standard_exec_prefix/spec_machine_suffix/specs
7530 for any override of as, ld and libraries. */
7531 specs_file = (char *) alloca (strlen (standard_exec_prefix)
7532 + strlen (spec_machine_suffix) + sizeof ("specs"));
7533 strcpy (specs_file, standard_exec_prefix);
7534 strcat (specs_file, spec_machine_suffix);
7535 strcat (specs_file, "specs");
7536 if (access (specs_file, R_OK) == 0)
7537 read_specs (specs_file, true, false);
7539 /* Process any configure-time defaults specified for the command line
7540 options, via OPTION_DEFAULT_SPECS. */
7541 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
7542 do_option_spec (option_default_specs[i].name,
7543 option_default_specs[i].spec);
7545 /* Process DRIVER_SELF_SPECS, adding any new options to the end
7546 of the command line. */
7548 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
7549 do_self_spec (driver_self_specs[i]);
7551 /* If not cross-compiling, look for executables in the standard
7553 if (*cross_compile == '0')
7555 if (*md_exec_prefix)
7557 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
7558 PREFIX_PRIORITY_LAST, 0, 0);
7562 /* Process sysroot_suffix_spec. */
7563 if (*sysroot_suffix_spec != 0
7564 && !no_sysroot_suffix
7565 && do_spec_2 (sysroot_suffix_spec) == 0)
7567 if (argbuf.length () > 1)
7568 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
7569 else if (argbuf.length () == 1)
7570 target_sysroot_suffix = xstrdup (argbuf.last ());
7573 #ifdef HAVE_LD_SYSROOT
7574 /* Pass the --sysroot option to the linker, if it supports that. If
7575 there is a sysroot_suffix_spec, it has already been processed by
7576 this point, so target_system_root really is the system root we
7578 if (target_system_root)
7580 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
7581 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
7582 set_spec ("link", XOBFINISH (&obstack, const char *), false);
7586 /* Process sysroot_hdrs_suffix_spec. */
7587 if (*sysroot_hdrs_suffix_spec != 0
7588 && !no_sysroot_suffix
7589 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
7591 if (argbuf.length () > 1)
7592 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
7593 else if (argbuf.length () == 1)
7594 target_sysroot_hdrs_suffix = xstrdup (argbuf.last ());
7597 /* Look for startfiles in the standard places. */
7598 if (*startfile_prefix_spec != 0
7599 && do_spec_2 (startfile_prefix_spec) == 0
7600 && do_spec_1 (" ", 0, NULL) == 0)
7604 FOR_EACH_VEC_ELT (argbuf, ndx, arg)
7605 add_sysrooted_prefix (&startfile_prefixes, arg, "BINUTILS",
7606 PREFIX_PRIORITY_LAST, 0, 1);
7608 /* We should eventually get rid of all these and stick to
7609 startfile_prefix_spec exclusively. */
7610 else if (*cross_compile == '0' || target_system_root)
7612 if (*md_startfile_prefix)
7613 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
7614 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
7616 if (*md_startfile_prefix_1)
7617 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
7618 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
7620 /* If standard_startfile_prefix is relative, base it on
7621 standard_exec_prefix. This lets us move the installed tree
7622 as a unit. If GCC_EXEC_PREFIX is defined, base
7623 standard_startfile_prefix on that as well.
7625 If the prefix is relative, only search it for native compilers;
7626 otherwise we will search a directory containing host libraries. */
7627 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
7628 add_sysrooted_prefix (&startfile_prefixes,
7629 standard_startfile_prefix, "BINUTILS",
7630 PREFIX_PRIORITY_LAST, 0, 1);
7631 else if (*cross_compile == '0')
7633 add_prefix (&startfile_prefixes,
7634 concat (gcc_exec_prefix
7635 ? gcc_exec_prefix : standard_exec_prefix,
7637 standard_startfile_prefix, NULL),
7638 NULL, PREFIX_PRIORITY_LAST, 0, 1);
7641 /* Sysrooted prefixes are relocated because target_system_root is
7642 also relocated by gcc_exec_prefix. */
7643 if (*standard_startfile_prefix_1)
7644 add_sysrooted_prefix (&startfile_prefixes,
7645 standard_startfile_prefix_1, "BINUTILS",
7646 PREFIX_PRIORITY_LAST, 0, 1);
7647 if (*standard_startfile_prefix_2)
7648 add_sysrooted_prefix (&startfile_prefixes,
7649 standard_startfile_prefix_2, "BINUTILS",
7650 PREFIX_PRIORITY_LAST, 0, 1);
7653 /* Process any user specified specs in the order given on the command
7655 for (struct user_specs *uptr = user_specs_head; uptr; uptr = uptr->next)
7657 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
7659 read_specs (filename ? filename : uptr->filename, false, true);
7662 /* Process any user self specs. */
7664 struct spec_list *sl;
7665 for (sl = specs; sl; sl = sl->next)
7666 if (sl->name_len == sizeof "self_spec" - 1
7667 && !strcmp (sl->name, "self_spec"))
7668 do_self_spec (*sl->ptr_spec);
7673 enum save_temps save;
7675 if (!compare_debug_second)
7677 n_switches_debug_check[1] = n_switches;
7678 n_switches_alloc_debug_check[1] = n_switches_alloc;
7679 switches_debug_check[1] = XDUPVEC (struct switchstr, switches,
7682 do_self_spec ("%:compare-debug-self-opt()");
7683 n_switches_debug_check[0] = n_switches;
7684 n_switches_alloc_debug_check[0] = n_switches_alloc;
7685 switches_debug_check[0] = switches;
7687 n_switches = n_switches_debug_check[1];
7688 n_switches_alloc = n_switches_alloc_debug_check[1];
7689 switches = switches_debug_check[1];
7692 /* Avoid crash when computing %j in this early. */
7693 save = save_temps_flag;
7694 save_temps_flag = SAVE_TEMPS_NONE;
7696 compare_debug = -compare_debug;
7697 do_self_spec ("%:compare-debug-self-opt()");
7699 save_temps_flag = save;
7701 if (!compare_debug_second)
7703 n_switches_debug_check[1] = n_switches;
7704 n_switches_alloc_debug_check[1] = n_switches_alloc;
7705 switches_debug_check[1] = switches;
7706 compare_debug = -compare_debug;
7707 n_switches = n_switches_debug_check[0];
7708 n_switches_alloc = n_switches_debug_check[0];
7709 switches = switches_debug_check[0];
7714 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
7715 if (gcc_exec_prefix)
7716 gcc_exec_prefix = concat (gcc_exec_prefix, spec_host_machine,
7717 dir_separator_str, spec_version,
7718 accel_dir_suffix, dir_separator_str, NULL);
7720 /* Now we have the specs.
7721 Set the `valid' bits for switches that match anything in any spec. */
7723 validate_all_switches ();
7725 /* Now that we have the switches and the specs, set
7726 the subdirectory based on the options. */
7727 set_multilib_dir ();
7730 /* Set up to remember the pathname of gcc and any options
7731 needed for collect. We use argv[0] instead of progname because
7732 we need the complete pathname. */
7735 driver::putenv_COLLECT_GCC (const char *argv0) const
7737 obstack_init (&collect_obstack);
7738 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
7739 obstack_grow (&collect_obstack, argv0, strlen (argv0) + 1);
7740 xputenv (XOBFINISH (&collect_obstack, char *));
7743 /* Set up to remember the pathname of the lto wrapper. */
7746 driver::maybe_putenv_COLLECT_LTO_WRAPPER () const
7748 char *lto_wrapper_file;
7751 lto_wrapper_file = NULL;
7753 lto_wrapper_file = find_a_file (&exec_prefixes, "lto-wrapper",
7755 if (lto_wrapper_file)
7757 lto_wrapper_file = convert_white_space (lto_wrapper_file);
7758 lto_wrapper_spec = lto_wrapper_file;
7759 obstack_init (&collect_obstack);
7760 obstack_grow (&collect_obstack, "COLLECT_LTO_WRAPPER=",
7761 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
7762 obstack_grow (&collect_obstack, lto_wrapper_spec,
7763 strlen (lto_wrapper_spec) + 1);
7764 xputenv (XOBFINISH (&collect_obstack, char *));
7769 /* Set up to remember the names of offload targets. */
7772 driver::maybe_putenv_OFFLOAD_TARGETS () const
7774 if (offload_targets && offload_targets[0] != '\0')
7776 obstack_grow (&collect_obstack, "OFFLOAD_TARGET_NAMES=",
7777 sizeof ("OFFLOAD_TARGET_NAMES=") - 1);
7778 obstack_grow (&collect_obstack, offload_targets,
7779 strlen (offload_targets) + 1);
7780 xputenv (XOBFINISH (&collect_obstack, char *));
7783 free (offload_targets);
7784 offload_targets = NULL;
7787 /* Helper function for driver::suggest_option. Populate
7788 m_option_suggestions with candidate strings for misspelled options.
7789 The strings will be freed by the driver's dtor. */
7792 driver::build_option_suggestions (void)
7794 gcc_assert (m_option_suggestions == NULL);
7795 m_option_suggestions = new auto_vec <char *> ();
7797 /* We build a vec of m_option_suggestions, using add_misspelling_candidates
7798 to add copies of strings, without a leading dash. */
7800 for (unsigned int i = 0; i < cl_options_count; i++)
7802 const struct cl_option *option = &cl_options[i];
7803 const char *opt_text = option->opt_text;
7807 if (option->var_type == CLVC_ENUM)
7809 const struct cl_enum *e = &cl_enums[option->var_enum];
7810 for (unsigned j = 0; e->values[j].arg != NULL; j++)
7812 char *with_arg = concat (opt_text, e->values[j].arg, NULL);
7813 add_misspelling_candidates (m_option_suggestions, option,
7819 add_misspelling_candidates (m_option_suggestions, option,
7823 case OPT_fsanitize_:
7824 case OPT_fsanitize_recover_:
7825 /* -fsanitize= and -fsanitize-recover= can take
7826 a comma-separated list of arguments. Given that combinations
7827 are supported, we can't add all potential candidates to the
7828 vec, but if we at least add them individually without commas,
7829 we should do a better job e.g. correcting
7832 "-fsanitize=address"
7833 rather than to "-Wframe-address" (PR driver/69265). */
7835 for (int j = 0; sanitizer_opts[j].name != NULL; ++j)
7837 struct cl_option optb;
7838 /* -fsanitize=all is not valid, only -fno-sanitize=all.
7839 So don't register the positive misspelling candidates
7841 if (sanitizer_opts[j].flag == ~0U && i == OPT_fsanitize_)
7844 optb.opt_text = opt_text = "-fno-sanitize=";
7845 optb.cl_reject_negative = true;
7848 /* Get one arg at a time e.g. "-fsanitize=address". */
7849 char *with_arg = concat (opt_text,
7850 sanitizer_opts[j].name,
7852 /* Add with_arg and all of its variant spellings e.g.
7853 "-fno-sanitize=address" to candidates (albeit without
7855 add_misspelling_candidates (m_option_suggestions, option,
7865 /* Helper function for driver::handle_unrecognized_options.
7867 Given an unrecognized option BAD_OPT (without the leading dash),
7868 locate the closest reasonable matching option (again, without the
7869 leading dash), or NULL.
7871 The returned string is owned by the driver instance. */
7874 driver::suggest_option (const char *bad_opt)
7876 /* Lazily populate m_option_suggestions. */
7877 if (!m_option_suggestions)
7878 build_option_suggestions ();
7879 gcc_assert (m_option_suggestions);
7881 /* "m_option_suggestions" is now populated. Use it. */
7882 return find_closest_string
7884 (auto_vec <const char *> *) m_option_suggestions);
7887 /* Reject switches that no pass was interested in. */
7890 driver::handle_unrecognized_options ()
7892 for (size_t i = 0; (int) i < n_switches; i++)
7893 if (! switches[i].validated)
7895 const char *hint = suggest_option (switches[i].part1);
7897 error ("unrecognized command line option %<-%s%>;"
7898 " did you mean %<-%s%>?",
7899 switches[i].part1, hint);
7901 error ("unrecognized command line option %<-%s%>",
7906 /* Handle the various -print-* options, returning 0 if the driver
7907 should exit, or nonzero if the driver should continue. */
7910 driver::maybe_print_and_exit () const
7912 if (print_search_dirs)
7914 printf (_("install: %s%s\n"),
7915 gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
7916 gcc_exec_prefix ? "" : machine_suffix);
7917 printf (_("programs: %s\n"),
7918 build_search_list (&exec_prefixes, "", false, false));
7919 printf (_("libraries: %s\n"),
7920 build_search_list (&startfile_prefixes, "", false, true));
7924 if (print_file_name)
7926 printf ("%s\n", find_file (print_file_name));
7930 if (print_prog_name)
7932 if (use_ld != NULL && ! strcmp (print_prog_name, "ld"))
7934 /* Append USE_LD to the default linker. */
7935 #ifdef DEFAULT_LINKER
7937 # ifdef HAVE_HOST_EXECUTABLE_SUFFIX
7938 int len = (sizeof (DEFAULT_LINKER)
7939 - sizeof (HOST_EXECUTABLE_SUFFIX));
7943 char *default_linker = xstrdup (DEFAULT_LINKER);
7944 /* Strip HOST_EXECUTABLE_SUFFIX if DEFAULT_LINKER contains
7945 HOST_EXECUTABLE_SUFFIX. */
7946 if (! strcmp (&default_linker[len], HOST_EXECUTABLE_SUFFIX))
7948 default_linker[len] = '\0';
7949 ld = concat (default_linker, use_ld,
7950 HOST_EXECUTABLE_SUFFIX, NULL);
7955 ld = concat (DEFAULT_LINKER, use_ld, NULL);
7956 if (access (ld, X_OK) == 0)
7958 printf ("%s\n", ld);
7962 print_prog_name = concat (print_prog_name, use_ld, NULL);
7964 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
7965 printf ("%s\n", (newname ? newname : print_prog_name));
7969 if (print_multi_lib)
7971 print_multilib_info ();
7975 if (print_multi_directory)
7977 if (multilib_dir == NULL)
7980 printf ("%s\n", multilib_dir);
7984 if (print_multiarch)
7986 if (multiarch_dir == NULL)
7989 printf ("%s\n", multiarch_dir);
7995 if (target_system_root)
7997 if (target_sysroot_suffix)
7998 printf ("%s%s\n", target_system_root, target_sysroot_suffix);
8000 printf ("%s\n", target_system_root);
8005 if (print_multi_os_directory)
8007 if (multilib_os_dir == NULL)
8010 printf ("%s\n", multilib_os_dir);
8014 if (print_sysroot_headers_suffix)
8016 if (*sysroot_hdrs_suffix_spec)
8018 printf("%s\n", (target_sysroot_hdrs_suffix
8019 ? target_sysroot_hdrs_suffix
8024 /* The error status indicates that only one set of fixed
8025 headers should be built. */
8026 fatal_error (input_location,
8027 "not configured with sysroot headers suffix");
8030 if (print_help_list)
8036 printf (_("\nFor bug reporting instructions, please see:\n"));
8037 printf ("%s.\n", bug_report_url);
8042 /* We do not exit here. Instead we have created a fake input file
8043 called 'help-dummy' which needs to be compiled, and we pass this
8044 on the various sub-processes, along with the --help switch.
8045 Ensure their output appears after ours. */
8046 fputc ('\n', stdout);
8052 printf (_("%s %s%s\n"), progname, pkgversion_string,
8054 printf ("Copyright %s 2018 Free Software Foundation, Inc.\n",
8056 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
8057 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
8062 /* We do not exit here. We use the same mechanism of --help to print
8063 the version of the sub-processes. */
8064 fputc ('\n', stdout);
8070 print_configuration (stderr);
8078 /* Figure out what to do with each input file.
8079 Return true if we need to exit early from "main", false otherwise. */
8082 driver::prepare_infiles ()
8085 int lang_n_infiles = 0;
8087 if (n_infiles == added_libraries)
8088 fatal_error (input_location, "no input files");
8091 /* Early exit needed from main. */
8094 /* Make a place to record the compiler output file names
8095 that correspond to the input files. */
8098 i += lang_specific_extra_outfiles;
8099 outfiles = XCNEWVEC (const char *, i);
8101 /* Record which files were specified explicitly as link input. */
8103 explicit_link_files = XCNEWVEC (char, n_infiles);
8105 combine_inputs = have_o || flag_wpa;
8107 for (i = 0; (int) i < n_infiles; i++)
8109 const char *name = infiles[i].name;
8110 struct compiler *compiler = lookup_compiler (name,
8112 infiles[i].language);
8114 if (compiler && !(compiler->combinable))
8115 combine_inputs = false;
8117 if (lang_n_infiles > 0 && compiler != input_file_compiler
8118 && infiles[i].language && infiles[i].language[0] != '*')
8119 infiles[i].incompiler = compiler;
8123 input_file_compiler = compiler;
8124 infiles[i].incompiler = compiler;
8128 /* Since there is no compiler for this input file, assume it is a
8130 explicit_link_files[i] = 1;
8131 infiles[i].incompiler = NULL;
8133 infiles[i].compiled = false;
8134 infiles[i].preprocessed = false;
8137 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1)
8138 fatal_error (input_location,
8139 "cannot specify -o with -c, -S or -E with multiple files");
8141 /* No early exit needed from main; we can continue. */
8145 /* Run the spec machinery on each input file. */
8148 driver::do_spec_on_infiles () const
8152 for (i = 0; (int) i < n_infiles; i++)
8154 int this_file_error = 0;
8156 /* Tell do_spec what to substitute for %i. */
8158 input_file_number = i;
8159 set_input (infiles[i].name);
8161 if (infiles[i].compiled)
8164 /* Use the same thing in %o, unless cp->spec says otherwise. */
8166 outfiles[i] = gcc_input_filename;
8168 /* Figure out which compiler from the file's suffix. */
8171 = lookup_compiler (infiles[i].name, input_filename_length,
8172 infiles[i].language);
8174 if (input_file_compiler)
8176 /* Ok, we found an applicable compiler. Run its spec. */
8178 if (input_file_compiler->spec[0] == '#')
8180 error ("%s: %s compiler not installed on this system",
8181 gcc_input_filename, &input_file_compiler->spec[1]);
8182 this_file_error = 1;
8190 free (debug_check_temp_file[0]);
8191 debug_check_temp_file[0] = NULL;
8193 free (debug_check_temp_file[1]);
8194 debug_check_temp_file[1] = NULL;
8197 value = do_spec (input_file_compiler->spec);
8198 infiles[i].compiled = true;
8200 this_file_error = 1;
8201 else if (compare_debug && debug_check_temp_file[0])
8204 inform (UNKNOWN_LOCATION,
8205 "recompiling with -fcompare-debug");
8207 compare_debug = -compare_debug;
8208 n_switches = n_switches_debug_check[1];
8209 n_switches_alloc = n_switches_alloc_debug_check[1];
8210 switches = switches_debug_check[1];
8212 value = do_spec (input_file_compiler->spec);
8214 compare_debug = -compare_debug;
8215 n_switches = n_switches_debug_check[0];
8216 n_switches_alloc = n_switches_alloc_debug_check[0];
8217 switches = switches_debug_check[0];
8221 error ("during -fcompare-debug recompilation");
8222 this_file_error = 1;
8225 gcc_assert (debug_check_temp_file[1]
8226 && filename_cmp (debug_check_temp_file[0],
8227 debug_check_temp_file[1]));
8230 inform (UNKNOWN_LOCATION, "comparing final insns dumps");
8232 if (compare_files (debug_check_temp_file))
8233 this_file_error = 1;
8238 free (debug_check_temp_file[0]);
8239 debug_check_temp_file[0] = NULL;
8241 free (debug_check_temp_file[1]);
8242 debug_check_temp_file[1] = NULL;
8247 /* If this file's name does not contain a recognized suffix,
8248 record it as explicit linker input. */
8251 explicit_link_files[i] = 1;
8253 /* Clear the delete-on-failure queue, deleting the files in it
8254 if this compilation failed. */
8256 if (this_file_error)
8258 delete_failure_queue ();
8261 /* If this compilation succeeded, don't delete those files later. */
8262 clear_failure_queue ();
8265 /* Reset the input file name to the first compile/object file name, for use
8266 with %b in LINK_SPEC. We use the first input file that we can find
8267 a compiler to compile it instead of using infiles.language since for
8268 languages other than C we use aliases that we then lookup later. */
8273 for (i = 0; i < n_infiles ; i++)
8274 if (infiles[i].incompiler
8275 || (infiles[i].language && infiles[i].language[0] != '*'))
8277 set_input (infiles[i].name);
8284 /* Make sure INPUT_FILE_NUMBER points to first available open
8286 input_file_number = n_infiles;
8287 if (lang_specific_pre_link ())
8292 /* If we have to run the linker, do it now. */
8295 driver::maybe_run_linker (const char *argv0) const
8298 int linker_was_run = 0;
8299 int num_linker_inputs;
8301 /* Determine if there are any linker input files. */
8302 num_linker_inputs = 0;
8303 for (i = 0; (int) i < n_infiles; i++)
8304 if (explicit_link_files[i] || outfiles[i] != NULL)
8305 num_linker_inputs++;
8307 /* Run ld to link all the compiler output files. */
8309 if (num_linker_inputs > 0 && !seen_error () && print_subprocess_help < 2)
8311 int tmp = execution_count;
8315 #if HAVE_LTO_PLUGIN > 0
8316 #if HAVE_LTO_PLUGIN == 2
8317 const char *fno_use_linker_plugin = "fno-use-linker-plugin";
8319 const char *fuse_linker_plugin = "fuse-linker-plugin";
8323 /* We'll use ld if we can't find collect2. */
8324 if (! strcmp (linker_name_spec, "collect2"))
8326 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false);
8328 linker_name_spec = "ld";
8331 #if HAVE_LTO_PLUGIN > 0
8332 #if HAVE_LTO_PLUGIN == 2
8333 if (!switch_matches (fno_use_linker_plugin,
8334 fno_use_linker_plugin
8335 + strlen (fno_use_linker_plugin), 0))
8337 if (switch_matches (fuse_linker_plugin,
8339 + strlen (fuse_linker_plugin), 0))
8342 char *temp_spec = find_a_file (&exec_prefixes,
8343 LTOPLUGINSONAME, R_OK,
8346 fatal_error (input_location,
8347 "-fuse-linker-plugin, but %s not found",
8349 linker_plugin_file_spec = convert_white_space (temp_spec);
8352 lto_gcc_spec = argv0;
8355 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
8357 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false);
8358 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true);
8360 if (print_subprocess_help == 1)
8362 printf (_("\nLinker options\n==============\n\n"));
8363 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
8364 " to the linker.\n\n"));
8367 int value = do_spec (link_command_spec);
8370 linker_was_run = (tmp != execution_count);
8373 /* If options said don't run linker,
8374 complain about input files to be given to the linker. */
8376 if (! linker_was_run && !seen_error ())
8377 for (i = 0; (int) i < n_infiles; i++)
8378 if (explicit_link_files[i]
8379 && !(infiles[i].language && infiles[i].language[0] == '*'))
8380 warning (0, "%s: linker input file unused because linking not done",
8384 /* The end of "main". */
8387 driver::final_actions () const
8389 /* Delete some or all of the temporary files we made. */
8392 delete_failure_queue ();
8393 delete_temp_files ();
8395 if (print_help_list)
8397 printf (("\nFor bug reporting instructions, please see:\n"));
8398 printf ("%s\n", bug_report_url);
8402 /* Determine what the exit code of the driver should be. */
8405 driver::get_exit_code () const
8407 return (signal_count != 0 ? 2
8408 : seen_error () ? (pass_exit_codes ? greatest_status : 1)
8412 /* Find the proper compilation spec for the file name NAME,
8413 whose length is LENGTH. LANGUAGE is the specified language,
8414 or 0 if this file is to be passed to the linker. */
8416 static struct compiler *
8417 lookup_compiler (const char *name, size_t length, const char *language)
8419 struct compiler *cp;
8421 /* If this was specified by the user to be a linker input, indicate that. */
8422 if (language != 0 && language[0] == '*')
8425 /* Otherwise, look for the language, if one is spec'd. */
8428 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
8429 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
8431 if (name != NULL && strcmp (name, "-") == 0
8432 && (strcmp (cp->suffix, "@c-header") == 0
8433 || strcmp (cp->suffix, "@c++-header") == 0)
8435 fatal_error (input_location,
8436 "cannot use %<-%> as input filename for a "
8437 "precompiled header");
8442 error ("language %s not recognized", language);
8446 /* Look for a suffix. */
8447 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
8449 if (/* The suffix `-' matches only the file name `-'. */
8450 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
8451 || (strlen (cp->suffix) < length
8452 /* See if the suffix matches the end of NAME. */
8453 && !strcmp (cp->suffix,
8454 name + length - strlen (cp->suffix))
8459 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
8460 /* Look again, but case-insensitively this time. */
8462 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
8464 if (/* The suffix `-' matches only the file name `-'. */
8465 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
8466 || (strlen (cp->suffix) < length
8467 /* See if the suffix matches the end of NAME. */
8468 && ((!strcmp (cp->suffix,
8469 name + length - strlen (cp->suffix))
8470 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
8471 && !strcasecmp (cp->suffix,
8472 name + length - strlen (cp->suffix)))
8478 if (cp >= compilers)
8480 if (cp->spec[0] != '@')
8481 /* A non-alias entry: return it. */
8484 /* An alias entry maps a suffix to a language.
8485 Search for the language; pass 0 for NAME and LENGTH
8486 to avoid infinite recursion if language not found. */
8487 return lookup_compiler (NULL, 0, cp->spec + 1);
8493 save_string (const char *s, int len)
8495 char *result = XNEWVEC (char, len + 1);
8497 gcc_checking_assert (strlen (s) >= (unsigned int) len);
8498 memcpy (result, s, len);
8504 pfatal_with_name (const char *name)
8506 perror_with_name (name);
8507 delete_temp_files ();
8512 perror_with_name (const char *name)
8514 error ("%s: %m", name);
8518 validate_switches_from_spec (const char *spec, bool user)
8520 const char *p = spec;
8523 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
8524 /* We have a switch spec. */
8525 p = validate_switches (p + 1, user);
8529 validate_all_switches (void)
8531 struct compiler *comp;
8532 struct spec_list *spec;
8534 for (comp = compilers; comp->spec; comp++)
8535 validate_switches_from_spec (comp->spec, false);
8537 /* Look through the linked list of specs read from the specs file. */
8538 for (spec = specs; spec; spec = spec->next)
8539 validate_switches_from_spec (*spec->ptr_spec, spec->user_p);
8541 validate_switches_from_spec (link_command_spec, false);
8544 /* Look at the switch-name that comes after START
8545 and mark as valid all supplied switches that match it. */
8548 validate_switches (const char *start, bool user_spec)
8550 const char *p = start;
8554 bool suffix = false;
8555 bool starred = false;
8557 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
8566 if (*p == '.' || *p == ',')
8570 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
8571 || *p == ',' || *p == '.' || *p == '@')
8576 starred = true, p++;
8582 /* Mark all matching switches as valid. */
8583 for (i = 0; i < n_switches; i++)
8584 if (!strncmp (switches[i].part1, atom, len)
8585 && (starred || switches[i].part1[len] == '\0')
8586 && (switches[i].known || user_spec))
8587 switches[i].validated = true;
8591 if (*p && (p[-1] == '|' || p[-1] == '&'))
8594 if (*p && p[-1] == ':')
8596 while (*p && *p != ';' && *p != '}')
8601 if (*p == '{' || *p == '<')
8602 p = validate_switches (p+1, user_spec);
8603 else if (p[0] == 'W' && p[1] == '{')
8604 p = validate_switches (p+2, user_spec);
8611 if (*p && p[-1] == ';')
8625 static struct mdswitchstr *mdswitches;
8626 static int n_mdswitches;
8628 /* Check whether a particular argument was used. The first time we
8629 canonicalize the switches to keep only the ones we care about. */
8634 int operator () (const char *p, int len);
8641 const char *replace;
8646 mswitchstr *mswitches;
8651 used_arg_t used_arg;
8654 used_arg_t::operator () (const char *p, int len)
8660 struct mswitchstr *matches;
8664 /* Break multilib_matches into the component strings of string
8665 and replacement string. */
8666 for (q = multilib_matches; *q != '\0'; q++)
8671 = (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
8673 q = multilib_matches;
8682 fatal_error (input_location, "multilib spec %qs is invalid",
8687 matches[i].len = q - matches[i].str;
8689 matches[i].replace = ++q;
8690 while (*q != ';' && *q != '\0')
8693 goto invalid_matches;
8696 matches[i].rep_len = q - matches[i].replace;
8702 /* Now build a list of the replacement string for switches that we care
8703 about. Make sure we allocate at least one entry. This prevents
8704 xmalloc from calling fatal, and prevents us from re-executing this
8707 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1));
8708 for (i = 0; i < n_switches; i++)
8709 if ((switches[i].live_cond & SWITCH_IGNORE) == 0)
8711 int xlen = strlen (switches[i].part1);
8712 for (j = 0; j < cnt; j++)
8713 if (xlen == matches[j].len
8714 && ! strncmp (switches[i].part1, matches[j].str, xlen))
8716 mswitches[n_mswitches].str = matches[j].replace;
8717 mswitches[n_mswitches].len = matches[j].rep_len;
8718 mswitches[n_mswitches].replace = (char *) 0;
8719 mswitches[n_mswitches].rep_len = 0;
8725 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
8726 on the command line nor any options mutually incompatible with
8728 for (i = 0; i < n_mdswitches; i++)
8732 for (q = multilib_options; *q != '\0'; *q && q++)
8738 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
8739 || strchr (" /", q[mdswitches[i].len]) == NULL)
8741 while (*q != ' ' && *q != '/' && *q != '\0')
8748 if (*q != ' ' && *q != '\0')
8750 while (*r != ' ' && *r != '\0')
8753 while (*q != ' ' && *q != '/' && *q != '\0')
8756 if (used_arg (r, q - r))
8761 mswitches[n_mswitches].str = mdswitches[i].str;
8762 mswitches[n_mswitches].len = mdswitches[i].len;
8763 mswitches[n_mswitches].replace = (char *) 0;
8764 mswitches[n_mswitches].rep_len = 0;
8777 for (i = 0; i < n_mswitches; i++)
8778 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
8784 void used_arg_t::finalize ()
8786 XDELETEVEC (mswitches);
8793 default_arg (const char *p, int len)
8797 for (i = 0; i < n_mdswitches; i++)
8798 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
8804 /* Work out the subdirectory to use based on the options. The format of
8805 multilib_select is a list of elements. Each element is a subdirectory
8806 name followed by a list of options followed by a semicolon. The format
8807 of multilib_exclusions is the same, but without the preceding
8808 directory. First gcc will check the exclusions, if none of the options
8809 beginning with an exclamation point are present, and all of the other
8810 options are present, then we will ignore this completely. Passing
8811 that, gcc will consider each multilib_select in turn using the same
8812 rules for matching the options. If a match is found, that subdirectory
8814 A subdirectory name is optionally followed by a colon and the corresponding
8818 set_multilib_dir (void)
8821 unsigned int this_path_len;
8822 const char *this_path, *this_arg;
8823 const char *start, *end;
8825 int ok, ndfltok, first;
8828 start = multilib_defaults;
8829 while (*start == ' ' || *start == '\t')
8831 while (*start != '\0')
8834 while (*start != ' ' && *start != '\t' && *start != '\0')
8836 while (*start == ' ' || *start == '\t')
8844 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches);
8845 for (start = multilib_defaults; *start != '\0'; start = end + 1)
8847 while (*start == ' ' || *start == '\t')
8853 for (end = start + 1;
8854 *end != ' ' && *end != '\t' && *end != '\0'; end++)
8857 obstack_grow (&multilib_obstack, start, end - start);
8858 obstack_1grow (&multilib_obstack, 0);
8859 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *);
8860 mdswitches[i++].len = end - start;
8867 p = multilib_exclusions;
8870 /* Ignore newlines. */
8877 /* Check the arguments. */
8884 fatal_error (input_location, "multilib exclusions %qs is invalid",
8885 multilib_exclusions);
8895 while (*p != ' ' && *p != ';')
8898 goto invalid_exclusions;
8902 if (*this_arg != '!')
8910 ok = used_arg (this_arg, p - this_arg);
8925 p = multilib_select;
8927 /* Append multilib reuse rules if any. With those rules, we can reuse
8928 one multilib for certain different options sets. */
8929 if (strlen (multilib_reuse) > 0)
8930 p = concat (p, multilib_reuse, NULL);
8934 /* Ignore newlines. */
8941 /* Get the initial path. */
8948 fatal_error (input_location, "multilib select %qs %qs is invalid",
8949 multilib_select, multilib_reuse);
8953 this_path_len = p - this_path;
8955 /* Check the arguments. */
8962 goto invalid_select;
8971 while (*p != ' ' && *p != ';')
8974 goto invalid_select;
8978 if (*this_arg != '!')
8986 /* If this is a default argument, we can just ignore it.
8987 This is true even if this_arg begins with '!'. Beginning
8988 with '!' does not mean that this argument is necessarily
8989 inappropriate for this library: it merely means that
8990 there is a more specific library which uses this
8991 argument. If this argument is a default, we need not
8992 consider that more specific library. */
8993 ok = used_arg (this_arg, p - this_arg);
9000 if (default_arg (this_arg, p - this_arg))
9009 if (this_path_len != 1
9010 || this_path[0] != '.')
9012 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1);
9015 strncpy (new_multilib_dir, this_path, this_path_len);
9016 new_multilib_dir[this_path_len] = '\0';
9017 q = strchr (new_multilib_dir, ':');
9020 multilib_dir = new_multilib_dir;
9027 const char *q = this_path, *end = this_path + this_path_len;
9029 while (q < end && *q != ':')
9033 const char *q2 = q + 1, *ml_end = end;
9034 char *new_multilib_os_dir;
9036 while (q2 < end && *q2 != ':')
9040 if (ml_end - q == 1)
9041 multilib_os_dir = xstrdup (".");
9044 new_multilib_os_dir = XNEWVEC (char, ml_end - q);
9045 memcpy (new_multilib_os_dir, q + 1, ml_end - q - 1);
9046 new_multilib_os_dir[ml_end - q - 1] = '\0';
9047 multilib_os_dir = new_multilib_os_dir;
9050 if (q2 < end && *q2 == ':')
9052 char *new_multiarch_dir = XNEWVEC (char, end - q2);
9053 memcpy (new_multiarch_dir, q2 + 1, end - q2 - 1);
9054 new_multiarch_dir[end - q2 - 1] = '\0';
9055 multiarch_dir = new_multiarch_dir;
9064 if (multilib_dir == NULL && multilib_os_dir != NULL
9065 && strcmp (multilib_os_dir, ".") == 0)
9067 free (CONST_CAST (char *, multilib_os_dir));
9068 multilib_os_dir = NULL;
9070 else if (multilib_dir != NULL && multilib_os_dir == NULL)
9071 multilib_os_dir = multilib_dir;
9074 /* Print out the multiple library subdirectory selection
9075 information. This prints out a series of lines. Each line looks
9076 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
9077 required. Only the desired options are printed out, the negative
9078 matches. The options are print without a leading dash. There are
9079 no spaces to make it easy to use the information in the shell.
9080 Each subdirectory is printed only once. This assumes the ordering
9081 generated by the genmultilib script. Also, we leave out ones that match
9085 print_multilib_info (void)
9087 const char *p = multilib_select;
9088 const char *last_path = 0, *this_path;
9090 unsigned int last_path_len = 0;
9095 /* Ignore newlines. */
9102 /* Get the initial path. */
9109 fatal_error (input_location,
9110 "multilib select %qs is invalid", multilib_select);
9116 /* When --disable-multilib was used but target defines
9117 MULTILIB_OSDIRNAMES, entries starting with .: (and not starting
9118 with .:: for multiarch configurations) are there just to find
9119 multilib_os_dir, so skip them from output. */
9120 if (this_path[0] == '.' && this_path[1] == ':' && this_path[2] != ':')
9123 /* Check for matches with the multilib_exclusions. We don't bother
9124 with the '!' in either list. If any of the exclusion rules match
9125 all of its options with the select rule, we skip it. */
9127 const char *e = multilib_exclusions;
9128 const char *this_arg;
9133 /* Ignore newlines. */
9140 /* Check the arguments. */
9149 fatal_error (input_location,
9150 "multilib exclusion %qs is invalid",
9151 multilib_exclusions);
9162 while (*e != ' ' && *e != ';')
9165 goto invalid_exclusion;
9173 int len = e - this_arg;
9176 goto invalid_select;
9180 while (*q != ' ' && *q != ';')
9183 goto invalid_select;
9187 if (! strncmp (arg, this_arg,
9188 (len < q - arg) ? q - arg : len)
9189 || default_arg (this_arg, e - this_arg))
9219 /* If this is a duplicate, skip it. */
9220 skip = (last_path != 0
9221 && (unsigned int) (p - this_path) == last_path_len
9222 && ! filename_ncmp (last_path, this_path, last_path_len));
9224 last_path = this_path;
9225 last_path_len = p - this_path;
9228 /* If this directory requires any default arguments, we can skip
9229 it. We will already have printed a directory identical to
9230 this one which does not require that default argument. */
9241 goto invalid_select;
9248 while (*q != ' ' && *q != ';')
9251 goto invalid_select;
9256 && default_arg (arg, q - arg))
9271 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
9282 goto invalid_select;
9290 use_arg = *p != '!';
9295 while (*p != ' ' && *p != ';')
9298 goto invalid_select;
9310 /* If there are extra options, print them now. */
9311 if (multilib_extra && *multilib_extra)
9313 int print_at = TRUE;
9316 for (q = multilib_extra; *q != '\0'; q++)
9337 /* getenv built-in spec function.
9339 Returns the value of the environment variable given by its first argument,
9340 concatenated with the second argument. If the variable is not defined, a
9341 fatal error is issued unless such undefs are internally allowed, in which
9342 case the variable name is used as the variable value. */
9345 getenv_spec_function (int argc, const char **argv)
9348 const char *varname;
9358 value = env.get (varname);
9360 if (!value && spec_undefvar_allowed)
9364 fatal_error (input_location,
9365 "environment variable %qs not defined", varname);
9367 /* We have to escape every character of the environment variable so
9368 they are not interpreted as active spec characters. A
9369 particularly painful case is when we are reading a variable
9370 holding a windows path complete with \ separators. */
9371 len = strlen (value) * 2 + strlen (argv[1]) + 1;
9372 result = XNEWVAR (char, len);
9373 for (ptr = result; *value; ptr += 2)
9379 strcpy (ptr, argv[1]);
9384 /* if-exists built-in spec function.
9386 Checks to see if the file specified by the absolute pathname in
9387 ARGS exists. Returns that pathname if found.
9389 The usual use for this function is to check for a library file
9390 (whose name has been expanded with %s). */
9393 if_exists_spec_function (int argc, const char **argv)
9395 /* Must have only one argument. */
9396 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
9402 /* if-exists-else built-in spec function.
9404 This is like if-exists, but takes an additional argument which
9405 is returned if the first argument does not exist. */
9408 if_exists_else_spec_function (int argc, const char **argv)
9410 /* Must have exactly two arguments. */
9414 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
9420 /* sanitize built-in spec function.
9422 This returns non-NULL, if sanitizing address, thread or
9423 any of the undefined behavior sanitizers. */
9426 sanitize_spec_function (int argc, const char **argv)
9431 if (strcmp (argv[0], "address") == 0)
9432 return (flag_sanitize & SANITIZE_USER_ADDRESS) ? "" : NULL;
9433 if (strcmp (argv[0], "kernel-address") == 0)
9434 return (flag_sanitize & SANITIZE_KERNEL_ADDRESS) ? "" : NULL;
9435 if (strcmp (argv[0], "thread") == 0)
9436 return (flag_sanitize & SANITIZE_THREAD) ? "" : NULL;
9437 if (strcmp (argv[0], "undefined") == 0)
9438 return ((flag_sanitize
9439 & (SANITIZE_UNDEFINED | SANITIZE_UNDEFINED_NONDEFAULT))
9440 && !flag_sanitize_undefined_trap_on_error) ? "" : NULL;
9441 if (strcmp (argv[0], "leak") == 0)
9442 return ((flag_sanitize
9443 & (SANITIZE_ADDRESS | SANITIZE_LEAK | SANITIZE_THREAD))
9444 == SANITIZE_LEAK) ? "" : NULL;
9448 /* replace-outfile built-in spec function.
9450 This looks for the first argument in the outfiles array's name and
9451 replaces it with the second argument. */
9454 replace_outfile_spec_function (int argc, const char **argv)
9457 /* Must have exactly two arguments. */
9461 for (i = 0; i < n_infiles; i++)
9463 if (outfiles[i] && !filename_cmp (outfiles[i], argv[0]))
9464 outfiles[i] = xstrdup (argv[1]);
9469 /* remove-outfile built-in spec function.
9471 * This looks for the first argument in the outfiles array's name and
9475 remove_outfile_spec_function (int argc, const char **argv)
9478 /* Must have exactly one argument. */
9482 for (i = 0; i < n_infiles; i++)
9484 if (outfiles[i] && !filename_cmp (outfiles[i], argv[0]))
9490 /* Given two version numbers, compares the two numbers.
9491 A version number must match the regular expression
9492 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
9495 compare_version_strings (const char *v1, const char *v2)
9500 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
9501 REG_EXTENDED | REG_NOSUB) != 0)
9503 rresult = regexec (&r, v1, 0, NULL, 0);
9504 if (rresult == REG_NOMATCH)
9505 fatal_error (input_location, "invalid version number %qs", v1);
9506 else if (rresult != 0)
9508 rresult = regexec (&r, v2, 0, NULL, 0);
9509 if (rresult == REG_NOMATCH)
9510 fatal_error (input_location, "invalid version number %qs", v2);
9511 else if (rresult != 0)
9514 return strverscmp (v1, v2);
9518 /* version_compare built-in spec function.
9520 This takes an argument of the following form:
9522 <comparison-op> <arg1> [<arg2>] <switch> <result>
9524 and produces "result" if the comparison evaluates to true,
9525 and nothing if it doesn't.
9527 The supported <comparison-op> values are:
9529 >= true if switch is a later (or same) version than arg1
9531 < true if switch is an earlier version than arg1
9533 >< true if switch is arg1 or later, and earlier than arg2
9534 <> true if switch is earlier than arg1 or is arg2 or later
9536 If the switch is not present, the condition is false unless
9537 the first character of the <comparison-op> is '!'.
9540 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
9541 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
9544 version_compare_spec_function (int argc, const char **argv)
9548 const char *switch_value = NULL;
9553 fatal_error (input_location, "too few arguments to %%:version-compare");
9554 if (argv[0][0] == '\0')
9556 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!')
9558 if (argc != nargs + 3)
9559 fatal_error (input_location, "too many arguments to %%:version-compare");
9561 switch_len = strlen (argv[nargs + 1]);
9562 for (i = 0; i < n_switches; i++)
9563 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len)
9564 && check_live_switch (i, switch_len))
9565 switch_value = switches[i].part1 + switch_len;
9567 if (switch_value == NULL)
9571 comp1 = compare_version_strings (switch_value, argv[1]);
9573 comp2 = compare_version_strings (switch_value, argv[2]);
9575 comp2 = -1; /* This value unused. */
9578 switch (argv[0][0] << 8 | argv[0][1])
9580 case '>' << 8 | '=':
9581 result = comp1 >= 0;
9583 case '!' << 8 | '<':
9584 result = comp1 >= 0 || switch_value == NULL;
9589 case '!' << 8 | '>':
9590 result = comp1 < 0 || switch_value == NULL;
9592 case '>' << 8 | '<':
9593 result = comp1 >= 0 && comp2 < 0;
9595 case '<' << 8 | '>':
9596 result = comp1 < 0 || comp2 >= 0;
9600 fatal_error (input_location,
9601 "unknown operator %qs in %%:version-compare", argv[0]);
9606 return argv[nargs + 2];
9609 /* %:include builtin spec function. This differs from %include in that it
9610 can be nested inside a spec, and thus be conditionalized. It takes
9611 one argument, the filename, and looks for it in the startfile path.
9612 The result is always NULL, i.e. an empty expansion. */
9615 include_spec_function (int argc, const char **argv)
9622 file = find_a_file (&startfile_prefixes, argv[0], R_OK, true);
9623 read_specs (file ? file : argv[0], false, false);
9628 /* %:find-file spec function. This function replaces its argument by
9629 the file found through find_file, that is the -print-file-name gcc
9632 find_file_spec_function (int argc, const char **argv)
9639 file = find_file (argv[0]);
9644 /* %:find-plugindir spec function. This function replaces its argument
9645 by the -iplugindir=<dir> option. `dir' is found through find_file, that
9646 is the -print-file-name gcc program option. */
9648 find_plugindir_spec_function (int argc, const char **argv ATTRIBUTE_UNUSED)
9655 option = concat ("-iplugindir=", find_file ("plugin"), NULL);
9660 /* %:print-asm-header spec function. Print a banner to say that the
9661 following output is from the assembler. */
9664 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED,
9665 const char **argv ATTRIBUTE_UNUSED)
9667 printf (_("Assembler options\n=================\n\n"));
9668 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
9673 /* Get a random number for -frandom-seed */
9675 static unsigned HOST_WIDE_INT
9676 get_random_number (void)
9678 unsigned HOST_WIDE_INT ret = 0;
9681 fd = open ("/dev/urandom", O_RDONLY);
9684 read (fd, &ret, sizeof (HOST_WIDE_INT));
9690 /* Get some more or less random data. */
9691 #ifdef HAVE_GETTIMEOFDAY
9695 gettimeofday (&tv, NULL);
9696 ret = tv.tv_sec * 1000 + tv.tv_usec / 1000;
9700 time_t now = time (NULL);
9702 if (now != (time_t)-1)
9703 ret = (unsigned) now;
9707 return ret ^ getpid ();
9710 /* %:compare-debug-dump-opt spec function. Save the last argument,
9711 expected to be the last -fdump-final-insns option, or generate a
9715 compare_debug_dump_opt_spec_function (int arg,
9716 const char **argv ATTRIBUTE_UNUSED)
9721 static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3];
9724 fatal_error (input_location,
9725 "too many arguments to %%:compare-debug-dump-opt");
9727 do_spec_2 ("%{fdump-final-insns=*:%*}");
9728 do_spec_1 (" ", 0, NULL);
9730 if (argbuf.length () > 0
9731 && strcmp (argv[argbuf.length () - 1], "."))
9736 name = xstrdup (argv[argbuf.length () - 1]);
9741 const char *ext = NULL;
9743 if (argbuf.length () > 0)
9745 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
9748 else if (!compare_debug)
9751 do_spec_2 ("%g.gkd");
9753 do_spec_1 (" ", 0, NULL);
9755 gcc_assert (argbuf.length () > 0);
9757 name = concat (argbuf.last (), ext, NULL);
9759 ret = concat ("-fdump-final-insns=", name, NULL);
9762 which = compare_debug < 0;
9763 debug_check_temp_file[which] = name;
9767 unsigned HOST_WIDE_INT value = get_random_number ();
9769 sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value);
9775 ret = concat ("%{!frandom-seed=*:-frandom-seed=", random_seed, "} ",
9786 static const char *debug_auxbase_opt;
9788 /* %:compare-debug-self-opt spec function. Expands to the options
9789 that are to be passed in the second compilation of
9793 compare_debug_self_opt_spec_function (int arg,
9794 const char **argv ATTRIBUTE_UNUSED)
9797 fatal_error (input_location,
9798 "too many arguments to %%:compare-debug-self-opt");
9800 if (compare_debug >= 0)
9803 do_spec_2 ("%{c|S:%{o*:%*}}");
9804 do_spec_1 (" ", 0, NULL);
9806 if (argbuf.length () > 0)
9807 debug_auxbase_opt = concat ("-auxbase-strip ",
9811 debug_auxbase_opt = NULL;
9814 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
9815 %<fdump-final-insns=* -w -S -o %j \
9816 %{!fcompare-debug-second:-fcompare-debug-second} \
9817 ", compare_debug_opt, NULL);
9820 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
9821 options that are to be passed in the second compilation of
9822 compare-debug. It expects, as an argument, the basename of the
9823 current input file name, with the .gk suffix appended to it. */
9826 compare_debug_auxbase_opt_spec_function (int arg,
9833 fatal_error (input_location,
9834 "too few arguments to %%:compare-debug-auxbase-opt");
9837 fatal_error (input_location,
9838 "too many arguments to %%:compare-debug-auxbase-opt");
9840 if (compare_debug >= 0)
9843 len = strlen (argv[0]);
9844 if (len < 3 || strcmp (argv[0] + len - 3, ".gk") != 0)
9845 fatal_error (input_location, "argument to %%:compare-debug-auxbase-opt "
9846 "does not end in .gk");
9848 if (debug_auxbase_opt)
9849 return debug_auxbase_opt;
9851 #define OPT "-auxbase "
9854 name = (char*) xmalloc (sizeof (OPT) + len);
9855 memcpy (name, OPT, sizeof (OPT) - 1);
9856 memcpy (name + sizeof (OPT) - 1, argv[0], len);
9857 name[sizeof (OPT) - 1 + len] = '\0';
9864 /* %:pass-through-libs spec function. Finds all -l options and input
9865 file names in the lib spec passed to it, and makes a list of them
9866 prepended with the plugin option to cause them to be passed through
9867 to the final link after all the new object files have been added. */
9870 pass_through_libs_spec_func (int argc, const char **argv)
9872 char *prepended = xstrdup (" ");
9874 /* Shlemiel the painter's algorithm. Innately horrible, but at least
9875 we know that there will never be more than a handful of strings to
9876 concat, and it's only once per run, so it's not worth optimising. */
9877 for (n = 0; n < argc; n++)
9879 char *old = prepended;
9880 /* Anything that isn't an option is a full path to an output
9881 file; pass it through if it ends in '.a'. Among options,
9883 if (argv[n][0] == '-' && argv[n][1] == 'l')
9885 const char *lopt = argv[n] + 2;
9886 /* Handle both joined and non-joined -l options. If for any
9887 reason there's a trailing -l with no joined or following
9888 arg just discard it. */
9889 if (!*lopt && ++n >= argc)
9893 prepended = concat (prepended, "-plugin-opt=-pass-through=-l",
9896 else if (!strcmp (".a", argv[n] + strlen (argv[n]) - 2))
9898 prepended = concat (prepended, "-plugin-opt=-pass-through=",
9899 argv[n], " ", NULL);
9901 if (prepended != old)
9907 /* %:replace-extension spec function. Replaces the extension of the
9908 first argument with the second argument. */
9911 replace_extension_spec_func (int argc, const char **argv)
9919 fatal_error (input_location, "too few arguments to %%:replace-extension");
9921 name = xstrdup (argv[0]);
9923 for (i = strlen (name) - 1; i >= 0; i--)
9924 if (IS_DIR_SEPARATOR (name[i]))
9927 p = strrchr (name + i + 1, '.');
9931 result = concat (name, argv[1], NULL);
9937 /* Returns "" if ARGV[ARGC - 2] is greater than ARGV[ARGC-1].
9938 Otherwise, return NULL. */
9941 greater_than_spec_func (int argc, const char **argv)
9948 gcc_assert (argc >= 2);
9950 long arg = strtol (argv[argc - 2], &converted, 10);
9951 gcc_assert (converted != argv[argc - 2]);
9953 long lim = strtol (argv[argc - 1], &converted, 10);
9954 gcc_assert (converted != argv[argc - 1]);
9962 /* Returns "" if debug_info_level is greater than ARGV[ARGC-1].
9963 Otherwise, return NULL. */
9966 debug_level_greater_than_spec_func (int argc, const char **argv)
9971 fatal_error (input_location,
9972 "wrong number of arguments to %%:debug-level-gt");
9974 long arg = strtol (argv[0], &converted, 10);
9975 gcc_assert (converted != argv[0]);
9977 if (debug_info_level > arg)
9983 /* Insert backslash before spaces in ORIG (usually a file path), to
9984 avoid being broken by spec parser.
9986 This function is needed as do_spec_1 treats white space (' ' and '\t')
9987 as the end of an argument. But in case of -plugin /usr/gcc install/xxx.so,
9988 the file name should be treated as a single argument rather than being
9989 broken into multiple. Solution is to insert '\\' before the space in a
9992 This function converts and only converts all occurrence of ' '
9993 to '\\' + ' ' and '\t' to '\\' + '\t'. For example:
9997 "a\\ b" -> "a\\\\ b"
9999 orig: input null-terminating string that was allocated by xalloc. The
10000 memory it points to might be freed in this function. Behavior undefined
10001 if ORIG wasn't xalloced or was freed already at entry.
10003 Return: ORIG if no conversion needed. Otherwise a newly allocated string
10004 that was converted from ORIG. */
10007 convert_white_space (char *orig)
10009 int len, number_of_space = 0;
10011 for (len = 0; orig[len]; len++)
10012 if (orig[len] == ' ' || orig[len] == '\t') number_of_space++;
10014 if (number_of_space)
10016 char *new_spec = (char *) xmalloc (len + number_of_space + 1);
10018 for (j = 0, k = 0; j <= len; j++, k++)
10020 if (orig[j] == ' ' || orig[j] == '\t')
10021 new_spec[k++] = '\\';
10022 new_spec[k] = orig[j];
10032 path_prefix_reset (path_prefix *prefix)
10034 struct prefix_list *iter, *next;
10035 iter = prefix->plist;
10039 free (const_cast <char *> (iter->prefix));
10044 prefix->max_len = 0;
10047 /* Restore all state within gcc.c to the initial state, so that the driver
10048 code can be safely re-run in-process.
10050 Many const char * variables are referenced by static specs (see
10051 INIT_STATIC_SPEC above). These variables are restored to their default
10052 values by a simple loop over the static specs.
10054 For other variables, we directly restore them all to their initial
10055 values (often implicitly 0).
10057 Free the various obstacks in this file, along with "opts_obstack"
10060 This function also restores any environment variables that were changed. */
10063 driver::finalize ()
10066 params_c_finalize ();
10067 diagnostic_finish (global_dc);
10070 at_file_supplied = 0;
10071 print_help_list = 0;
10073 verbose_only_flag = 0;
10074 print_subprocess_help = 0;
10076 report_times_to_file = NULL;
10077 target_system_root = DEFAULT_TARGET_SYSTEM_ROOT;
10078 target_system_root_changed = 0;
10079 target_sysroot_suffix = 0;
10080 target_sysroot_hdrs_suffix = 0;
10081 save_temps_flag = SAVE_TEMPS_NONE;
10082 save_temps_prefix = 0;
10083 save_temps_length = 0;
10084 spec_machine = DEFAULT_TARGET_MACHINE;
10085 greatest_status = 1;
10087 finalize_options_struct (&global_options);
10088 finalize_options_struct (&global_options_set);
10090 obstack_free (&obstack, NULL);
10091 obstack_free (&opts_obstack, NULL); /* in opts.c */
10092 obstack_free (&collect_obstack, NULL);
10094 link_command_spec = LINK_COMMAND_SPEC;
10096 obstack_free (&multilib_obstack, NULL);
10098 user_specs_head = NULL;
10099 user_specs_tail = NULL;
10101 /* Within the "compilers" vec, the fields "suffix" and "spec" were
10102 statically allocated for the default compilers, but dynamically
10103 allocated for additional compilers. Delete them for the latter. */
10104 for (int i = n_default_compilers; i < n_compilers; i++)
10106 free (const_cast <char *> (compilers[i].suffix));
10107 free (const_cast <char *> (compilers[i].spec));
10109 XDELETEVEC (compilers);
10113 linker_options.truncate (0);
10114 assembler_options.truncate (0);
10115 preprocessor_options.truncate (0);
10117 path_prefix_reset (&exec_prefixes);
10118 path_prefix_reset (&startfile_prefixes);
10119 path_prefix_reset (&include_prefixes);
10121 machine_suffix = 0;
10122 just_machine_suffix = 0;
10123 gcc_exec_prefix = 0;
10124 gcc_libexec_prefix = 0;
10125 md_exec_prefix = MD_EXEC_PREFIX;
10126 md_startfile_prefix = MD_STARTFILE_PREFIX;
10127 md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
10129 multilib_os_dir = 0;
10132 /* Free any specs dynamically-allocated by set_spec.
10133 These will be at the head of the list, before the
10134 statically-allocated ones. */
10137 while (specs != static_specs)
10139 spec_list *next = specs->next;
10140 free (const_cast <char *> (specs->name));
10146 for (unsigned i = 0; i < ARRAY_SIZE (static_specs); i++)
10148 spec_list *sl = &static_specs[i];
10152 free (const_cast <char *> (*(sl->ptr_spec)));
10153 sl->alloc_p = false;
10155 *(sl->ptr_spec) = sl->default_ptr;
10158 extra_specs = NULL;
10161 processing_spec_function = 0;
10163 argbuf.truncate (0);
10169 execution_count = 0;
10172 temp_filename = NULL;
10173 temp_filename_length = 0;
10174 always_delete_queue = NULL;
10175 failure_delete_queue = NULL;
10177 XDELETEVEC (switches);
10180 n_switches_alloc = 0;
10183 compare_debug_second = 0;
10184 compare_debug_opt = NULL;
10185 for (int i = 0; i < 2; i++)
10187 switches_debug_check[i] = NULL;
10188 n_switches_debug_check[i] = 0;
10189 n_switches_alloc_debug_check[i] = 0;
10190 debug_check_temp_file[i] = NULL;
10193 XDELETEVEC (infiles);
10196 n_infiles_alloc = 0;
10198 combine_inputs = false;
10199 added_libraries = 0;
10200 XDELETEVEC (outfiles);
10203 last_language_n_infiles = 0;
10204 gcc_input_filename = NULL;
10205 input_file_number = 0;
10206 input_filename_length = 0;
10207 basename_length = 0;
10208 suffixed_basename_length = 0;
10209 input_basename = NULL;
10210 input_suffix = NULL;
10211 /* We don't need to purge "input_stat", just to unset "input_stat_set". */
10212 input_stat_set = 0;
10213 input_file_compiler = NULL;
10215 delete_this_arg = 0;
10216 this_is_output_file = 0;
10217 this_is_library_file = 0;
10218 this_is_linker_script = 0;
10219 input_from_pipe = 0;
10220 suffix_subst = NULL;
10225 debug_auxbase_opt = NULL;
10227 used_arg.finalize ();
10231 Targets can provide configure-time default options in
10232 OPTION_DEFAULT_SPECS. The jit needs to access these, but
10233 they are expressed in the spec language.
10235 Run just enough of the driver to be able to expand these
10236 specs, and then call the callback CB on each
10237 such option. The options strings are *without* a leading
10238 '-' character e.g. ("march=x86-64"). Finally, clean up. */
10241 driver_get_configure_time_options (void (*cb) (const char *option,
10247 obstack_init (&obstack);
10248 init_opts_obstack ();
10251 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
10252 do_option_spec (option_default_specs[i].name,
10253 option_default_specs[i].spec);
10255 for (i = 0; (int) i < n_switches; i++)
10257 gcc_assert (switches[i].part1);
10258 (*cb) (switches[i].part1, user_data);
10261 obstack_free (&opts_obstack, NULL);
10262 obstack_free (&obstack, NULL);