1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987-2020 Free Software Foundation, Inc.
4 This file is part of GCC.
6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 3, or (at your option) any later
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING3. If not see
18 <http://www.gnu.org/licenses/>. */
20 /* This program is the user interface to the C compiler and possibly to
21 other compilers. It is used because compilation is a complicated procedure
22 which involves running several programs and passing temporary files between
23 them, forwarding the users switches to those programs selectively,
24 and deleting the temporary files at the end.
26 CC recognizes how to compile each input file by suffixes in the file names.
27 Once it knows which kind of compilation to perform, the procedure for
28 compilation is specified by a string called a "spec". */
32 #include "coretypes.h"
33 #include "multilib.h" /* before tm.h */
39 #include "opt-suggestions.h"
41 #include "diagnostic.h"
44 #include "filenames.h"
45 #include "spellcheck.h"
49 /* Manage the manipulation of env vars.
51 We poison "getenv" and "putenv", so that all enviroment-handling is
52 done through this class. Note that poisoning happens in the
53 preprocessor at the identifier level, and doesn't distinguish between
57 Hence we need to use "get" for the accessor method, not "getenv". */
62 void init (bool can_restore
, bool debug
);
63 const char *get (const char *name
);
64 void xput (const char *string
);
79 /* The singleton instance of class env_manager. */
81 static env_manager env
;
83 /* Initializer for class env_manager.
85 We can't do this as a constructor since we have a statically
86 allocated instance ("env" above). */
89 env_manager::init (bool can_restore
, bool debug
)
91 m_can_restore
= can_restore
;
95 /* Get the value of NAME within the environment. Essentially
96 a wrapper for ::getenv, but adding logging, and the possibility
97 of caching results. */
100 env_manager::get (const char *name
)
102 const char *result
= ::getenv (name
);
104 fprintf (stderr
, "env_manager::getenv (%s) -> %s\n", name
, result
);
108 /* Put the given KEY=VALUE entry STRING into the environment.
109 If the env_manager was initialized with CAN_RESTORE set, then
110 also record the old value of KEY within the environment, so that it
111 can be later restored. */
114 env_manager::xput (const char *string
)
117 fprintf (stderr
, "env_manager::xput (%s)\n", string
);
119 fnotice (stderr
, "%s\n", string
);
123 char *equals
= strchr (const_cast <char *> (string
), '=');
127 kv
.m_key
= xstrndup (string
, equals
- string
);
128 const char *cur_value
= ::getenv (kv
.m_key
);
130 fprintf (stderr
, "saving old value: %s\n",cur_value
);
131 kv
.m_value
= cur_value
? xstrdup (cur_value
) : NULL
;
132 m_keys
.safe_push (kv
);
135 ::putenv (CONST_CAST (char *, string
));
138 /* Undo any xputenv changes made since last restore.
139 Can only be called if the env_manager was initialized with
140 CAN_RESTORE enabled. */
143 env_manager::restore ()
148 gcc_assert (m_can_restore
);
150 FOR_EACH_VEC_ELT_REVERSE (m_keys
, i
, item
)
153 printf ("restoring saved key: %s value: %s\n", item
->m_key
, item
->m_value
);
155 ::setenv (item
->m_key
, item
->m_value
, 1);
157 ::unsetenv (item
->m_key
);
159 free (item
->m_value
);
165 /* Forbid other uses of getenv and putenv. */
166 #if (GCC_VERSION >= 3000)
167 #pragma GCC poison getenv putenv
172 /* By default there is no special suffix for target executables. */
173 #ifdef TARGET_EXECUTABLE_SUFFIX
174 #define HAVE_TARGET_EXECUTABLE_SUFFIX
176 #define TARGET_EXECUTABLE_SUFFIX ""
179 /* By default there is no special suffix for host executables. */
180 #ifdef HOST_EXECUTABLE_SUFFIX
181 #define HAVE_HOST_EXECUTABLE_SUFFIX
183 #define HOST_EXECUTABLE_SUFFIX ""
186 /* By default, the suffix for target object files is ".o". */
187 #ifdef TARGET_OBJECT_SUFFIX
188 #define HAVE_TARGET_OBJECT_SUFFIX
190 #define TARGET_OBJECT_SUFFIX ".o"
193 static const char dir_separator_str
[] = { DIR_SEPARATOR
, 0 };
195 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
196 #ifndef LIBRARY_PATH_ENV
197 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
200 /* If a stage of compilation returns an exit status >= 1,
201 compilation of that file ceases. */
203 #define MIN_FATAL_STATUS 1
205 /* Flag set by cppspec.c to 1. */
208 /* Flag set to nonzero if an @file argument has been supplied to gcc. */
209 static bool at_file_supplied
;
211 /* Definition of string containing the arguments given to configure. */
212 #include "configargs.h"
214 /* Flag saying to print the command line options understood by gcc and its
217 static int print_help_list
;
219 /* Flag saying to print the version of gcc and its sub-processes. */
221 static int print_version
;
223 /* Flag that stores string prefix for which we provide bash completion. */
225 static const char *completion
= NULL
;
227 /* Flag indicating whether we should ONLY print the command and
228 arguments (like verbose_flag) without executing the command.
229 Displayed arguments are quoted so that the generated command
230 line is suitable for execution. This is intended for use in
231 shell scripts to capture the driver-generated command line. */
232 static int verbose_only_flag
;
234 /* Flag indicating how to print command line options of sub-processes. */
236 static int print_subprocess_help
;
238 /* Linker suffix passed to -fuse-ld=... */
239 static const char *use_ld
;
241 /* Whether we should report subprocess execution times to a file. */
243 FILE *report_times_to_file
= NULL
;
245 /* Nonzero means place this string before uses of /, so that include
246 and library files can be found in an alternate location. */
248 #ifdef TARGET_SYSTEM_ROOT
249 #define DEFAULT_TARGET_SYSTEM_ROOT (TARGET_SYSTEM_ROOT)
251 #define DEFAULT_TARGET_SYSTEM_ROOT (0)
253 static const char *target_system_root
= DEFAULT_TARGET_SYSTEM_ROOT
;
255 /* Nonzero means pass the updated target_system_root to the compiler. */
257 static int target_system_root_changed
;
259 /* Nonzero means append this string to target_system_root. */
261 static const char *target_sysroot_suffix
= 0;
263 /* Nonzero means append this string to target_system_root for headers. */
265 static const char *target_sysroot_hdrs_suffix
= 0;
267 /* Nonzero means write "temp" files in source directory
268 and use the source file's name in them, and don't delete them. */
270 static enum save_temps
{
271 SAVE_TEMPS_NONE
, /* no -save-temps */
272 SAVE_TEMPS_CWD
, /* -save-temps in current directory */
273 SAVE_TEMPS_DUMP
, /* -save-temps in dumpdir */
274 SAVE_TEMPS_OBJ
/* -save-temps in object directory */
277 /* Set this iff the dumppfx implied by a -save-temps=* option is to
278 override a -dumpdir option, if any. */
279 static bool save_temps_overrides_dumpdir
= false;
281 /* -dumpdir, -dumpbase and -dumpbase-ext flags passed in, possibly
282 rearranged as they are to be passed down, e.g., dumpbase and
283 dumpbase_ext may be cleared if integrated with dumpdir or
285 static char *dumpdir
, *dumpbase
, *dumpbase_ext
;
287 /* Usually the length of the string in dumpdir. However, during
288 linking, it may be shortened to omit a driver-added trailing dash,
289 by then replaced with a trailing period, that is still to be passed
290 to sub-processes in -dumpdir, but not to be generally used in spec
291 filename expansions. See maybe_run_linker. */
292 static size_t dumpdir_length
= 0;
294 /* Set if the last character in dumpdir is (or was) a dash that the
295 driver added to dumpdir after dumpbase or linker output name. */
296 static bool dumpdir_trailing_dash_added
= false;
298 /* Basename of dump and aux outputs, computed from dumpbase (given or
299 derived from output name), to override input_basename in non-%w %b
301 static char *outbase
;
302 static size_t outbase_length
= 0;
304 /* The compiler version. */
306 static const char *compiler_version
;
308 /* The target version. */
310 static const char *const spec_version
= DEFAULT_TARGET_VERSION
;
312 /* The target machine. */
314 static const char *spec_machine
= DEFAULT_TARGET_MACHINE
;
315 static const char *spec_host_machine
= DEFAULT_REAL_TARGET_MACHINE
;
317 /* List of offload targets. Separated by colon. Empty string for
318 -foffload=disable. */
320 static char *offload_targets
= NULL
;
322 /* Nonzero if cross-compiling.
323 When -b is used, the value comes from the `specs' file. */
325 #ifdef CROSS_DIRECTORY_STRUCTURE
326 static const char *cross_compile
= "1";
328 static const char *cross_compile
= "0";
331 /* Greatest exit code of sub-processes that has been encountered up to
333 static int greatest_status
= 1;
335 /* This is the obstack which we use to allocate many strings. */
337 static struct obstack obstack
;
339 /* This is the obstack to build an environment variable to pass to
340 collect2 that describes all of the relevant switches of what to
341 pass the compiler in building the list of pointers to constructors
344 static struct obstack collect_obstack
;
346 /* Forward declaration for prototypes. */
350 static void init_spec (void);
351 static void store_arg (const char *, int, int);
352 static void insert_wrapper (const char *);
353 static char *load_specs (const char *);
354 static void read_specs (const char *, bool, bool);
355 static void set_spec (const char *, const char *, bool);
356 static struct compiler
*lookup_compiler (const char *, size_t, const char *);
357 static char *build_search_list (const struct path_prefix
*, const char *,
359 static void xputenv (const char *);
360 static void putenv_from_prefixes (const struct path_prefix
*, const char *,
362 static int access_check (const char *, int);
363 static char *find_a_file (const struct path_prefix
*, const char *, int, bool);
364 static void add_prefix (struct path_prefix
*, const char *, const char *,
366 static void add_sysrooted_prefix (struct path_prefix
*, const char *,
367 const char *, int, int, int);
368 static char *skip_whitespace (char *);
369 static void delete_if_ordinary (const char *);
370 static void delete_temp_files (void);
371 static void delete_failure_queue (void);
372 static void clear_failure_queue (void);
373 static int check_live_switch (int, int);
374 static const char *handle_braces (const char *);
375 static inline bool input_suffix_matches (const char *, const char *);
376 static inline bool switch_matches (const char *, const char *, int);
377 static inline void mark_matching_switches (const char *, const char *, int);
378 static inline void process_marked_switches (void);
379 static const char *process_brace_body (const char *, const char *, const char *, int, int);
380 static const struct spec_function
*lookup_spec_function (const char *);
381 static const char *eval_spec_function (const char *, const char *, const char *);
382 static const char *handle_spec_function (const char *, bool *, const char *);
383 static char *save_string (const char *, int);
384 static void set_collect_gcc_options (void);
385 static int do_spec_1 (const char *, int, const char *);
386 static int do_spec_2 (const char *, const char *);
387 static void do_option_spec (const char *, const char *);
388 static void do_self_spec (const char *);
389 static const char *find_file (const char *);
390 static int is_directory (const char *, bool);
391 static const char *validate_switches (const char *, bool, bool);
392 static void validate_all_switches (void);
393 static inline void validate_switches_from_spec (const char *, bool);
394 static void give_switch (int, int);
395 static int default_arg (const char *, int);
396 static void set_multilib_dir (void);
397 static void print_multilib_info (void);
398 static void display_help (void);
399 static void add_preprocessor_option (const char *, int);
400 static void add_assembler_option (const char *, int);
401 static void add_linker_option (const char *, int);
402 static void process_command (unsigned int, struct cl_decoded_option
*);
403 static int execute (void);
404 static void alloc_args (void);
405 static void clear_args (void);
406 static void fatal_signal (int);
407 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
408 static void init_gcc_specs (struct obstack
*, const char *, const char *,
411 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
412 static const char *convert_filename (const char *, int, int);
415 static void try_generate_repro (const char **argv
);
416 static const char *getenv_spec_function (int, const char **);
417 static const char *if_exists_spec_function (int, const char **);
418 static const char *if_exists_else_spec_function (int, const char **);
419 static const char *sanitize_spec_function (int, const char **);
420 static const char *replace_outfile_spec_function (int, const char **);
421 static const char *remove_outfile_spec_function (int, const char **);
422 static const char *version_compare_spec_function (int, const char **);
423 static const char *include_spec_function (int, const char **);
424 static const char *find_file_spec_function (int, const char **);
425 static const char *find_plugindir_spec_function (int, const char **);
426 static const char *print_asm_header_spec_function (int, const char **);
427 static const char *compare_debug_dump_opt_spec_function (int, const char **);
428 static const char *compare_debug_self_opt_spec_function (int, const char **);
429 static const char *pass_through_libs_spec_func (int, const char **);
430 static const char *dumps_spec_func (int, const char **);
431 static const char *greater_than_spec_func (int, const char **);
432 static const char *debug_level_greater_than_spec_func (int, const char **);
433 static const char *find_fortran_preinclude_file (int, const char **);
434 static char *convert_white_space (char *);
435 static char *quote_spec (char *);
436 static char *quote_spec_arg (char *);
437 static bool not_actual_file_p (const char *);
440 /* The Specs Language
442 Specs are strings containing lines, each of which (if not blank)
443 is made up of a program name, and arguments separated by spaces.
444 The program name must be exact and start from root, since no path
445 is searched and it is unreliable to depend on the current working directory.
446 Redirection of input or output is not supported; the subprograms must
447 accept filenames saying what files to read and write.
449 In addition, the specs can contain %-sequences to substitute variable text
450 or for conditional text. Here is a table of all defined %-sequences.
451 Note that spaces are not generated automatically around the results of
452 expanding these sequences; therefore, you can concatenate them together
453 or with constant text in a single argument.
455 %% substitute one % into the program name or argument.
456 %" substitute an empty argument.
457 %i substitute the name of the input file being processed.
458 %b substitute the basename for outputs related with the input file
459 being processed. This is often a substring of the input file name,
460 up to (and not including) the last period but, unless %w is active,
461 it is affected by the directory selected by -save-temps=*, by
462 -dumpdir, and, in case of multiple compilations, even by -dumpbase
463 and -dumpbase-ext and, in case of linking, by the linker output
464 name. When %w is active, it derives the main output name only from
465 the input file base name; when it is not, it names aux/dump output
467 %B same as %b, but include the input file suffix (text after the last
470 substitute a file name that has suffix SUFFIX and is chosen
471 once per compilation, and mark the argument a la %d. To reduce
472 exposure to denial-of-service attacks, the file name is now
473 chosen in a way that is hard to predict even when previously
474 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
475 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
476 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
477 had been pre-processed. Previously, %g was simply substituted
478 with a file name chosen once per compilation, without regard
479 to any appended suffix (which was therefore treated just like
480 ordinary text), making such attacks more likely to succeed.
482 like %g, but if -pipe is in effect, expands simply to "-".
484 like %g, but if -pipe is in effect, expands to nothing. (We have both
485 %| and %m to accommodate differences between system assemblers; see
486 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
488 like %g, but generates a new temporary file name even if %uSUFFIX
491 substitutes the last file name generated with %uSUFFIX, generating a
492 new one if there is no such last file name. In the absence of any
493 %uSUFFIX, this is just like %gSUFFIX, except they don't share
494 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
495 would involve the generation of two distinct file names, one
496 for each `%g.s' and another for each `%U.s'. Previously, %U was
497 simply substituted with a file name chosen for the previous %u,
498 without regard to any appended suffix.
500 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
501 writable, and if save-temps is off; otherwise, substitute the name
502 of a temporary file, just like %u. This temporary file is not
503 meant for communication between processes, but rather as a junk
506 substitutes .SUFFIX for the suffixes of a matched switch's args when
507 it is subsequently output with %*. SUFFIX is terminated by the next
509 %d marks the argument containing or following the %d as a
510 temporary file name, so that file will be deleted if GCC exits
511 successfully. Unlike %g, this contributes no text to the argument.
512 %w marks the argument containing or following the %w as the
513 "output file" of this compilation. This puts the argument
514 into the sequence of arguments that %o will substitute later.
515 %V indicates that this compilation produces no "output file".
517 like %{...} but marks the last argument supplied within as a file
518 to be deleted on failure.
520 like %{...} but puts the result into a FILE and substitutes @FILE
521 if an @file argument has been supplied.
522 %o substitutes the names of all the output files, with spaces
523 automatically placed around them. You should write spaces
524 around the %o as well or the results are undefined.
525 %o is for use in the specs for running the linker.
526 Input files whose names have no recognized suffix are not compiled
527 at all, but they are included among the output files, so they will
529 %O substitutes the suffix for object files. Note that this is
530 handled specially when it immediately follows %g, %u, or %U
531 (with or without a suffix argument) because of the need for
532 those to form complete file names. The handling is such that
533 %O is treated exactly as if it had already been substituted,
534 except that %g, %u, and %U do not currently support additional
535 SUFFIX characters following %O as they would following, for
537 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
538 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
539 and -B options) and -imultilib as necessary.
540 %s current argument is the name of a library or startup file of some sort.
541 Search for that file in a standard list of directories
542 and substitute the full name found.
543 %eSTR Print STR as an error message. STR is terminated by a newline.
544 Use this when inconsistent options are detected.
545 %nSTR Print STR as a notice. STR is terminated by a newline.
546 %x{OPTION} Accumulate an option for %X.
547 %X Output the accumulated linker options specified by compilations.
548 %Y Output the accumulated assembler options specified by compilations.
549 %Z Output the accumulated preprocessor options specified by compilations.
550 %a process ASM_SPEC as a spec.
551 This allows config.h to specify part of the spec for running as.
552 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
553 used here. This can be used to run a post-processor after the
554 assembler has done its job.
555 %D Dump out a -L option for each directory in startfile_prefixes.
556 If multilib_dir is set, extra entries are generated with it affixed.
557 %l process LINK_SPEC as a spec.
558 %L process LIB_SPEC as a spec.
559 %M Output multilib_os_dir.
560 %G process LIBGCC_SPEC as a spec.
561 %R Output the concatenation of target_system_root and
562 target_sysroot_suffix.
563 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
564 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
565 %C process CPP_SPEC as a spec.
566 %1 process CC1_SPEC as a spec.
567 %2 process CC1PLUS_SPEC as a spec.
568 %* substitute the variable part of a matched option. (See below.)
569 Note that each comma in the substituted string is replaced by
570 a single space. A space is appended after the last substition
571 unless there is more text in current sequence.
572 %<S remove all occurrences of -S from the command line.
573 Note - this command is position dependent. % commands in the
574 spec string before this one will see -S, % commands in the
575 spec string after this one will not.
576 %>S Similar to "%<S", but keep it in the GCC command line.
577 %<S* remove all occurrences of all switches beginning with -S from the
580 Call the named function FUNCTION, passing it ARGS. ARGS is
581 first processed as a nested spec string, then split into an
582 argument vector in the usual fashion. The function returns
583 a string which is processed as if it had appeared literally
584 as part of the current spec.
585 %{S} substitutes the -S switch, if that switch was given to GCC.
586 If that switch was not specified, this substitutes nothing.
587 Here S is a metasyntactic variable.
588 %{S*} substitutes all the switches specified to GCC whose names start
589 with -S. This is used for -o, -I, etc; switches that take
590 arguments. GCC considers `-o foo' as being one switch whose
591 name starts with `o'. %{o*} would substitute this text,
592 including the space; thus, two arguments would be generated.
593 %{S*&T*} likewise, but preserve order of S and T options (the order
594 of S and T in the spec is not significant). Can be any number
595 of ampersand-separated variables; for each the wild card is
596 optional. Useful for CPP as %{D*&U*&A*}.
598 %{S:X} substitutes X, if the -S switch was given to GCC.
599 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
600 %{S*:X} substitutes X if one or more switches whose names start
601 with -S was given to GCC. Normally X is substituted only
602 once, no matter how many such switches appeared. However,
603 if %* appears somewhere in X, then X will be substituted
604 once for each matching switch, with the %* replaced by the
605 part of that switch that matched the '*'. A space will be
606 appended after the last substition unless there is more
607 text in current sequence.
608 %{.S:X} substitutes X, if processing a file with suffix S.
609 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
610 %{,S:X} substitutes X, if processing a file which will use spec S.
611 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
613 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
614 combined with '!', '.', ',', and '*' as above binding stronger
616 If %* appears in X, all of the alternatives must be starred, and
617 only the first matching alternative is substituted.
618 %{%:function(args):X}
619 Call function named FUNCTION with args ARGS. If the function
620 returns non-NULL, then X is substituted, if it returns
621 NULL, it isn't substituted.
622 %{S:X; if S was given to GCC, substitutes X;
623 T:Y; else if T was given to GCC, substitutes Y;
624 :D} else substitutes D. There can be as many clauses as you need.
625 This may be combined with '.', '!', ',', '|', and '*' as above.
627 %(Spec) processes a specification defined in a specs file as *Spec:
629 The switch matching text S in a %{S}, %{S:X}, or similar construct can use
630 a backslash to ignore the special meaning of the character following it,
631 thus allowing literal matching of a character that is otherwise specially
632 treated. For example, %{std=iso9899\:1999:X} substitutes X if the
633 -std=iso9899:1999 option is given.
635 The conditional text X in a %{S:X} or similar construct may contain
636 other nested % constructs or spaces, or even newlines. They are
637 processed as usual, as described above. Trailing white space in X is
638 ignored. White space may also appear anywhere on the left side of the
639 colon in these constructs, except between . or * and the corresponding
642 The -O, -f, -g, -m, and -W switches are handled specifically in these
643 constructs. If another value of -O or the negated form of a -f, -m, or
644 -W switch is found later in the command line, the earlier switch
645 value is ignored, except with {S*} where S is just one letter; this
646 passes all matching options.
648 The character | at the beginning of the predicate text is used to indicate
649 that a command should be piped to the following command, but only if -pipe
652 Note that it is built into GCC which switches take arguments and which
653 do not. You might think it would be useful to generalize this to
654 allow each compiler's spec to say which switches take arguments. But
655 this cannot be done in a consistent fashion. GCC cannot even decide
656 which input files have been specified without knowing which switches
657 take arguments, and it must know which input files to compile in order
658 to tell which compilers to run.
660 GCC also knows implicitly that arguments starting in `-l' are to be
661 treated as compiler output files, and passed to the linker in their
662 proper position among the other output files. */
664 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
666 /* config.h can define ASM_SPEC to provide extra args to the assembler
667 or extra switch-translations. */
672 /* config.h can define ASM_FINAL_SPEC to run a post processor after
673 the assembler has run. */
674 #ifndef ASM_FINAL_SPEC
675 #define ASM_FINAL_SPEC \
677 objcopy --extract-dwo \
678 %{c:%{o*:%*}%{!o*:%w%b%O}}%{!c:%U%O} \
680 objcopy --strip-dwo \
681 %{c:%{o*:%*}%{!o*:%w%b%O}}%{!c:%U%O} \
685 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
686 or extra switch-translations. */
691 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
692 or extra switch-translations. */
697 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
698 or extra switch-translations. */
700 #define CC1PLUS_SPEC ""
703 /* config.h can define LINK_SPEC to provide extra args to the linker
704 or extra switch-translations. */
709 /* config.h can define LIB_SPEC to override the default libraries. */
711 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
714 /* When using -fsplit-stack we need to wrap pthread_create, in order
715 to initialize the stack guard. We always use wrapping, rather than
716 shared library ordering, and we keep the wrapper function in
717 libgcc. This is not yet a real spec, though it could become one;
718 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping
719 only works with GNU ld and gold. */
720 #ifdef HAVE_GOLD_NON_DEFAULT_SPLIT_STACK
721 #define STACK_SPLIT_SPEC " %{fsplit-stack: -fuse-ld=gold --wrap=pthread_create}"
723 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}"
727 #define STATIC_LIBASAN_LIBS \
728 " %{static-libasan|static:%:include(libsanitizer.spec)%(link_libasan)}"
729 #ifdef LIBASAN_EARLY_SPEC
730 #define LIBASAN_SPEC STATIC_LIBASAN_LIBS
731 #elif defined(HAVE_LD_STATIC_DYNAMIC)
732 #define LIBASAN_SPEC "%{static-libasan:" LD_STATIC_OPTION \
733 "} -lasan %{static-libasan:" LD_DYNAMIC_OPTION "}" \
736 #define LIBASAN_SPEC "-lasan" STATIC_LIBASAN_LIBS
740 #ifndef LIBASAN_EARLY_SPEC
741 #define LIBASAN_EARLY_SPEC ""
745 #define STATIC_LIBTSAN_LIBS \
746 " %{static-libtsan|static:%:include(libsanitizer.spec)%(link_libtsan)}"
747 #ifdef LIBTSAN_EARLY_SPEC
748 #define LIBTSAN_SPEC STATIC_LIBTSAN_LIBS
749 #elif defined(HAVE_LD_STATIC_DYNAMIC)
750 #define LIBTSAN_SPEC "%{static-libtsan:" LD_STATIC_OPTION \
751 "} -ltsan %{static-libtsan:" LD_DYNAMIC_OPTION "}" \
754 #define LIBTSAN_SPEC "-ltsan" STATIC_LIBTSAN_LIBS
758 #ifndef LIBTSAN_EARLY_SPEC
759 #define LIBTSAN_EARLY_SPEC ""
763 #define STATIC_LIBLSAN_LIBS \
764 " %{static-liblsan|static:%:include(libsanitizer.spec)%(link_liblsan)}"
765 #ifdef LIBLSAN_EARLY_SPEC
766 #define LIBLSAN_SPEC STATIC_LIBLSAN_LIBS
767 #elif defined(HAVE_LD_STATIC_DYNAMIC)
768 #define LIBLSAN_SPEC "%{static-liblsan:" LD_STATIC_OPTION \
769 "} -llsan %{static-liblsan:" LD_DYNAMIC_OPTION "}" \
772 #define LIBLSAN_SPEC "-llsan" STATIC_LIBLSAN_LIBS
776 #ifndef LIBLSAN_EARLY_SPEC
777 #define LIBLSAN_EARLY_SPEC ""
780 #ifndef LIBUBSAN_SPEC
781 #define STATIC_LIBUBSAN_LIBS \
782 " %{static-libubsan|static:%:include(libsanitizer.spec)%(link_libubsan)}"
783 #ifdef HAVE_LD_STATIC_DYNAMIC
784 #define LIBUBSAN_SPEC "%{static-libubsan:" LD_STATIC_OPTION \
785 "} -lubsan %{static-libubsan:" LD_DYNAMIC_OPTION "}" \
788 #define LIBUBSAN_SPEC "-lubsan" STATIC_LIBUBSAN_LIBS
792 /* Linker options for compressed debug sections. */
793 #if HAVE_LD_COMPRESS_DEBUG == 0
794 /* No linker support. */
795 #define LINK_COMPRESS_DEBUG_SPEC \
796 " %{gz*:%e-gz is not supported in this configuration} "
797 #elif HAVE_LD_COMPRESS_DEBUG == 1
798 /* GNU style on input, GNU ld options. Reject, not useful. */
799 #define LINK_COMPRESS_DEBUG_SPEC \
800 " %{gz*:%e-gz is not supported in this configuration} "
801 #elif HAVE_LD_COMPRESS_DEBUG == 2
802 /* GNU style, GNU gold options. */
803 #define LINK_COMPRESS_DEBUG_SPEC \
804 " %{gz|gz=zlib-gnu:" LD_COMPRESS_DEBUG_OPTION "=zlib}" \
805 " %{gz=none:" LD_COMPRESS_DEBUG_OPTION "=none}" \
806 " %{gz=zlib:%e-gz=zlib is not supported in this configuration} "
807 #elif HAVE_LD_COMPRESS_DEBUG == 3
808 /* ELF gABI style. */
809 #define LINK_COMPRESS_DEBUG_SPEC \
810 " %{gz|gz=zlib:" LD_COMPRESS_DEBUG_OPTION "=zlib}" \
811 " %{gz=none:" LD_COMPRESS_DEBUG_OPTION "=none}" \
812 " %{gz=zlib-gnu:" LD_COMPRESS_DEBUG_OPTION "=zlib-gnu} "
814 #error Unknown value for HAVE_LD_COMPRESS_DEBUG.
817 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
820 #if defined(REAL_LIBGCC_SPEC)
821 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
822 #elif defined(LINK_LIBGCC_SPECIAL_1)
823 /* Have gcc do the search for libgcc.a. */
824 #define LIBGCC_SPEC "libgcc.a%s"
826 #define LIBGCC_SPEC "-lgcc"
830 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
831 #ifndef STARTFILE_SPEC
832 #define STARTFILE_SPEC \
833 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
836 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
838 #define ENDFILE_SPEC ""
842 #define LINKER_NAME "collect2"
845 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
846 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
851 /* Assembler options for compressed debug sections. */
852 #if HAVE_LD_COMPRESS_DEBUG < 2
853 /* Reject if the linker cannot write compressed debug sections. */
854 #define ASM_COMPRESS_DEBUG_SPEC \
855 " %{gz*:%e-gz is not supported in this configuration} "
856 #else /* HAVE_LD_COMPRESS_DEBUG >= 2 */
857 #if HAVE_AS_COMPRESS_DEBUG == 0
858 /* No assembler support. Ignore silently. */
859 #define ASM_COMPRESS_DEBUG_SPEC \
861 #elif HAVE_AS_COMPRESS_DEBUG == 1
862 /* GNU style, GNU as options. */
863 #define ASM_COMPRESS_DEBUG_SPEC \
864 " %{gz|gz=zlib-gnu:" AS_COMPRESS_DEBUG_OPTION "}" \
865 " %{gz=none:" AS_NO_COMPRESS_DEBUG_OPTION "}" \
866 " %{gz=zlib:%e-gz=zlib is not supported in this configuration} "
867 #elif HAVE_AS_COMPRESS_DEBUG == 2
868 /* ELF gABI style. */
869 #define ASM_COMPRESS_DEBUG_SPEC \
870 " %{gz|gz=zlib:" AS_COMPRESS_DEBUG_OPTION "=zlib}" \
871 " %{gz=none:" AS_COMPRESS_DEBUG_OPTION "=none}" \
872 " %{gz=zlib-gnu:" AS_COMPRESS_DEBUG_OPTION "=zlib-gnu} "
874 #error Unknown value for HAVE_AS_COMPRESS_DEBUG.
876 #endif /* HAVE_LD_COMPRESS_DEBUG >= 2 */
878 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
880 #ifndef ASM_DEBUG_SPEC
881 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
882 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
883 # define ASM_DEBUG_SPEC \
884 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
885 ? "%{%:debug-level-gt(0):" \
886 "%{gdwarf*:--gdwarf2}%{!gdwarf*:%{g*:--gstabs}}}" ASM_MAP \
887 : "%{%:debug-level-gt(0):" \
888 "%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
890 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
891 # define ASM_DEBUG_SPEC "%{g*:%{%:debug-level-gt(0):--gstabs}}" ASM_MAP
893 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
894 # define ASM_DEBUG_SPEC "%{g*:%{%:debug-level-gt(0):--gdwarf2}}" ASM_MAP
898 #ifndef ASM_DEBUG_SPEC
899 # define ASM_DEBUG_SPEC ""
902 /* Here is the spec for running the linker, after compiling all files. */
904 /* This is overridable by the target in case they need to specify the
905 -lgcc and -lc order specially, yet not require them to override all
906 of LINK_COMMAND_SPEC. */
907 #ifndef LINK_GCC_C_SEQUENCE_SPEC
908 #define LINK_GCC_C_SEQUENCE_SPEC "%G %{!nolibc:%L %G}"
911 #ifndef LINK_SSP_SPEC
912 #ifdef TARGET_LIBC_PROVIDES_SSP
913 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
914 "|fstack-protector-strong|fstack-protector-explicit:}"
916 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
917 "|fstack-protector-strong|fstack-protector-explicit" \
918 ":-lssp_nonshared -lssp}"
922 #ifdef ENABLE_DEFAULT_PIE
923 #define PIE_SPEC "!no-pie"
924 #define NO_FPIE1_SPEC "fno-pie"
925 #define FPIE1_SPEC NO_FPIE1_SPEC ":;"
926 #define NO_FPIE2_SPEC "fno-PIE"
927 #define FPIE2_SPEC NO_FPIE2_SPEC ":;"
928 #define NO_FPIE_SPEC NO_FPIE1_SPEC "|" NO_FPIE2_SPEC
929 #define FPIE_SPEC NO_FPIE_SPEC ":;"
930 #define NO_FPIC1_SPEC "fno-pic"
931 #define FPIC1_SPEC NO_FPIC1_SPEC ":;"
932 #define NO_FPIC2_SPEC "fno-PIC"
933 #define FPIC2_SPEC NO_FPIC2_SPEC ":;"
934 #define NO_FPIC_SPEC NO_FPIC1_SPEC "|" NO_FPIC2_SPEC
935 #define FPIC_SPEC NO_FPIC_SPEC ":;"
936 #define NO_FPIE1_AND_FPIC1_SPEC NO_FPIE1_SPEC "|" NO_FPIC1_SPEC
937 #define FPIE1_OR_FPIC1_SPEC NO_FPIE1_AND_FPIC1_SPEC ":;"
938 #define NO_FPIE2_AND_FPIC2_SPEC NO_FPIE2_SPEC "|" NO_FPIC2_SPEC
939 #define FPIE2_OR_FPIC2_SPEC NO_FPIE2_AND_FPIC2_SPEC ":;"
940 #define NO_FPIE_AND_FPIC_SPEC NO_FPIE_SPEC "|" NO_FPIC_SPEC
941 #define FPIE_OR_FPIC_SPEC NO_FPIE_AND_FPIC_SPEC ":;"
943 #define PIE_SPEC "pie"
944 #define FPIE1_SPEC "fpie"
945 #define NO_FPIE1_SPEC FPIE1_SPEC ":;"
946 #define FPIE2_SPEC "fPIE"
947 #define NO_FPIE2_SPEC FPIE2_SPEC ":;"
948 #define FPIE_SPEC FPIE1_SPEC "|" FPIE2_SPEC
949 #define NO_FPIE_SPEC FPIE_SPEC ":;"
950 #define FPIC1_SPEC "fpic"
951 #define NO_FPIC1_SPEC FPIC1_SPEC ":;"
952 #define FPIC2_SPEC "fPIC"
953 #define NO_FPIC2_SPEC FPIC2_SPEC ":;"
954 #define FPIC_SPEC FPIC1_SPEC "|" FPIC2_SPEC
955 #define NO_FPIC_SPEC FPIC_SPEC ":;"
956 #define FPIE1_OR_FPIC1_SPEC FPIE1_SPEC "|" FPIC1_SPEC
957 #define NO_FPIE1_AND_FPIC1_SPEC FPIE1_OR_FPIC1_SPEC ":;"
958 #define FPIE2_OR_FPIC2_SPEC FPIE2_SPEC "|" FPIC2_SPEC
959 #define NO_FPIE2_AND_FPIC2_SPEC FPIE1_OR_FPIC2_SPEC ":;"
960 #define FPIE_OR_FPIC_SPEC FPIE_SPEC "|" FPIC_SPEC
961 #define NO_FPIE_AND_FPIC_SPEC FPIE_OR_FPIC_SPEC ":;"
964 #ifndef LINK_PIE_SPEC
967 #define LD_PIE_SPEC "-pie"
970 #define LD_PIE_SPEC ""
972 #define LINK_PIE_SPEC "%{static|shared|r:;" PIE_SPEC ":" LD_PIE_SPEC "} "
975 #ifndef LINK_BUILDID_SPEC
976 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
977 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
981 #ifndef LTO_PLUGIN_SPEC
982 #define LTO_PLUGIN_SPEC ""
985 /* Conditional to test whether the LTO plugin is used or not.
986 FIXME: For slim LTO we will need to enable plugin unconditionally. This
987 still cause problems with PLUGIN_LD != LD and when plugin is built but
988 not useable. For GCC 4.6 we don't support slim LTO and thus we can enable
989 plugin only when LTO is enabled. We still honor explicit
990 -fuse-linker-plugin if the linker used understands -plugin. */
992 /* The linker has some plugin support. */
993 #if HAVE_LTO_PLUGIN > 0
994 /* The linker used has full plugin support, use LTO plugin by default. */
995 #if HAVE_LTO_PLUGIN == 2
996 #define PLUGIN_COND "!fno-use-linker-plugin:%{!fno-lto"
997 #define PLUGIN_COND_CLOSE "}"
999 /* The linker used has limited plugin support, use LTO plugin with explicit
1000 -fuse-linker-plugin. */
1001 #define PLUGIN_COND "fuse-linker-plugin"
1002 #define PLUGIN_COND_CLOSE ""
1004 #define LINK_PLUGIN_SPEC \
1005 "%{" PLUGIN_COND": \
1006 -plugin %(linker_plugin_file) \
1007 -plugin-opt=%(lto_wrapper) \
1008 -plugin-opt=-fresolution=%u.res \
1009 " LTO_PLUGIN_SPEC "\
1010 %{flinker-output=*:-plugin-opt=-linker-output-known} \
1011 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
1012 }" PLUGIN_COND_CLOSE
1014 /* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */
1015 #define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\
1016 %e-fuse-linker-plugin is not supported in this configuration}"
1019 /* Linker command line options for -fsanitize= early on the command line. */
1020 #ifndef SANITIZER_EARLY_SPEC
1021 #define SANITIZER_EARLY_SPEC "\
1022 %{!nostdlib:%{!r:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_EARLY_SPEC "} \
1023 %{%:sanitize(thread):" LIBTSAN_EARLY_SPEC "} \
1024 %{%:sanitize(leak):" LIBLSAN_EARLY_SPEC "}}}}"
1027 /* Linker command line options for -fsanitize= late on the command line. */
1028 #ifndef SANITIZER_SPEC
1029 #define SANITIZER_SPEC "\
1030 %{!nostdlib:%{!r:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_SPEC "\
1031 %{static:%ecannot specify -static with -fsanitize=address}}\
1032 %{%:sanitize(thread):" LIBTSAN_SPEC "\
1033 %{static:%ecannot specify -static with -fsanitize=thread}}\
1034 %{%:sanitize(undefined):" LIBUBSAN_SPEC "}\
1035 %{%:sanitize(leak):" LIBLSAN_SPEC "}}}}"
1038 #ifndef POST_LINK_SPEC
1039 #define POST_LINK_SPEC ""
1042 /* This is the spec to use, once the code for creating the vtable
1043 verification runtime library, libvtv.so, has been created. Currently
1044 the vtable verification runtime functions are in libstdc++, so we use
1045 the spec just below this one. */
1046 #ifndef VTABLE_VERIFICATION_SPEC
1047 #if ENABLE_VTABLE_VERIFY
1048 #define VTABLE_VERIFICATION_SPEC "\
1049 %{!nostdlib:%{!r:%{fvtable-verify=std: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}\
1050 %{fvtable-verify=preinit: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}}}"
1052 #define VTABLE_VERIFICATION_SPEC "\
1053 %{fvtable-verify=none:} \
1054 %{fvtable-verify=std: \
1055 %e-fvtable-verify=std is not supported in this configuration} \
1056 %{fvtable-verify=preinit: \
1057 %e-fvtable-verify=preinit is not supported in this configuration}"
1061 /* -u* was put back because both BSD and SysV seem to support it. */
1062 /* %{static|no-pie|static-pie:} simply prevents an error message:
1063 1. If the target machine doesn't handle -static.
1064 2. If PIE isn't enabled by default.
1065 3. If the target machine doesn't handle -static-pie.
1067 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
1068 scripts which exist in user specified directories, or in standard
1070 /* We pass any -flto flags on to the linker, which is expected
1071 to understand them. In practice, this means it had better be collect2. */
1072 /* %{e*} includes -export-dynamic; see comment in common.opt. */
1073 #ifndef LINK_COMMAND_SPEC
1074 #define LINK_COMMAND_SPEC "\
1075 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
1078 "%{flto|flto=*:%<fcompare-debug*} \
1079 %{flto} %{fno-lto} %{flto=*} %l " LINK_PIE_SPEC \
1080 "%{fuse-ld=*:-fuse-ld=%*} " LINK_COMPRESS_DEBUG_SPEC \
1081 "%X %{o*} %{e*} %{N} %{n} %{r}\
1082 %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!r:%{!nostartfiles:%S}}} \
1083 %{static|no-pie|static-pie:} %@{L*} %(mfwrap) %(link_libgcc) " \
1084 VTABLE_VERIFICATION_SPEC " " SANITIZER_EARLY_SPEC " %o "" \
1085 %{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1):\
1086 %:include(libgomp.spec)%(link_gomp)}\
1087 %{fgnu-tm:%:include(libitm.spec)%(link_itm)}\
1088 %(mflib) " STACK_SPLIT_SPEC "\
1089 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} " SANITIZER_SPEC " \
1090 %{!nostdlib:%{!r:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}}\
1091 %{!nostdlib:%{!r:%{!nostartfiles:%E}}} %{T*} \n%(post_link) }}}}}}"
1094 #ifndef LINK_LIBGCC_SPEC
1095 /* Generate -L options for startfile prefix list. */
1096 # define LINK_LIBGCC_SPEC "%D"
1099 #ifndef STARTFILE_PREFIX_SPEC
1100 # define STARTFILE_PREFIX_SPEC ""
1103 #ifndef SYSROOT_SPEC
1104 # define SYSROOT_SPEC "--sysroot=%R"
1107 #ifndef SYSROOT_SUFFIX_SPEC
1108 # define SYSROOT_SUFFIX_SPEC ""
1111 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
1112 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
1115 static const char *asm_debug
= ASM_DEBUG_SPEC
;
1116 static const char *cpp_spec
= CPP_SPEC
;
1117 static const char *cc1_spec
= CC1_SPEC
;
1118 static const char *cc1plus_spec
= CC1PLUS_SPEC
;
1119 static const char *link_gcc_c_sequence_spec
= LINK_GCC_C_SEQUENCE_SPEC
;
1120 static const char *link_ssp_spec
= LINK_SSP_SPEC
;
1121 static const char *asm_spec
= ASM_SPEC
;
1122 static const char *asm_final_spec
= ASM_FINAL_SPEC
;
1123 static const char *link_spec
= LINK_SPEC
;
1124 static const char *lib_spec
= LIB_SPEC
;
1125 static const char *link_gomp_spec
= "";
1126 static const char *libgcc_spec
= LIBGCC_SPEC
;
1127 static const char *endfile_spec
= ENDFILE_SPEC
;
1128 static const char *startfile_spec
= STARTFILE_SPEC
;
1129 static const char *linker_name_spec
= LINKER_NAME
;
1130 static const char *linker_plugin_file_spec
= "";
1131 static const char *lto_wrapper_spec
= "";
1132 static const char *lto_gcc_spec
= "";
1133 static const char *post_link_spec
= POST_LINK_SPEC
;
1134 static const char *link_command_spec
= LINK_COMMAND_SPEC
;
1135 static const char *link_libgcc_spec
= LINK_LIBGCC_SPEC
;
1136 static const char *startfile_prefix_spec
= STARTFILE_PREFIX_SPEC
;
1137 static const char *sysroot_spec
= SYSROOT_SPEC
;
1138 static const char *sysroot_suffix_spec
= SYSROOT_SUFFIX_SPEC
;
1139 static const char *sysroot_hdrs_suffix_spec
= SYSROOT_HEADERS_SUFFIX_SPEC
;
1140 static const char *self_spec
= "";
1142 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
1143 There should be no need to override these in target dependent files,
1144 but we need to copy them to the specs file so that newer versions
1145 of the GCC driver can correctly drive older tool chains with the
1146 appropriate -B options. */
1148 /* When cpplib handles traditional preprocessing, get rid of this, and
1149 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
1150 that we default the front end language better. */
1151 static const char *trad_capable_cpp
=
1152 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}";
1154 /* We don't wrap .d files in %W{} since a missing .d file, and
1155 therefore no dependency entry, confuses make into thinking a .o
1156 file that happens to exist is up-to-date. */
1157 static const char *cpp_unique_options
=
1158 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %@{I*&F*} %{P} %I\
1159 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
1160 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
1161 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
1162 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
1163 %{remap} %{g3|ggdb3|gstabs3|gxcoff3|gvms3:-dD}\
1164 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
1165 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
1168 /* This contains cpp options which are common with cc1_options and are passed
1169 only when preprocessing only to avoid duplication. We pass the cc1 spec
1170 options to the preprocessor so that it the cc1 spec may manipulate
1171 options used to set target flags. Those special target flags settings may
1172 in turn cause preprocessor symbols to be defined specially. */
1173 static const char *cpp_options
=
1174 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
1175 %{f*} %{g*:%{%:debug-level-gt(0):%{g*}\
1176 %{!fno-working-directory:-fworking-directory}}} %{O*}\
1177 %{undef} %{save-temps*:-fpch-preprocess}";
1179 /* Pass -d* flags, possibly modifying -dumpdir, -dumpbase et al.
1181 Make it easy for a language to override the argument for the
1182 %:dumps specs function call. */
1183 #define DUMPS_OPTIONS(EXTS) \
1184 "%<dumpdir %<dumpbase %<dumpbase-ext %{d*} %:dumps(" EXTS ")"
1186 /* This contains cpp options which are not passed when the preprocessor
1187 output will be used by another program. */
1188 static const char *cpp_debug_options
= DUMPS_OPTIONS ("");
1190 /* NB: This is shared amongst all front-ends, except for Ada. */
1191 static const char *cc1_options
=
1192 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
1193 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
1194 %1 %{!Q:-quiet} %(cpp_debug_options) %{m*} %{aux-info*}\
1195 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
1196 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
1197 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\
1198 %{-target-help:--target-help}\
1199 %{-version:--version}\
1200 %{-help=*:--help=%*}\
1201 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %w%b.s}}}\
1202 %{fsyntax-only:-o %j} %{-param*}\
1203 %{coverage:-fprofile-arcs -ftest-coverage}\
1204 %{fprofile-arcs|fprofile-generate*|coverage:\
1205 %{!fprofile-update=single:\
1206 %{pthread:-fprofile-update=prefer-atomic}}}";
1208 static const char *asm_options
=
1209 "%{-target-help:%:print-asm-header()} "
1211 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
1212 to the assembler equivalents. */
1213 "%{v} %{w:-W} %{I*} "
1215 ASM_COMPRESS_DEBUG_SPEC
1216 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
1218 static const char *invoke_as
=
1219 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
1221 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
1222 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
1226 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
1227 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
1231 /* Some compilers have limits on line lengths, and the multilib_select
1232 and/or multilib_matches strings can be very long, so we build them at
1234 static struct obstack multilib_obstack
;
1235 static const char *multilib_select
;
1236 static const char *multilib_matches
;
1237 static const char *multilib_defaults
;
1238 static const char *multilib_exclusions
;
1239 static const char *multilib_reuse
;
1241 /* Check whether a particular argument is a default argument. */
1243 #ifndef MULTILIB_DEFAULTS
1244 #define MULTILIB_DEFAULTS { "" }
1247 static const char *const multilib_defaults_raw
[] = MULTILIB_DEFAULTS
;
1249 #ifndef DRIVER_SELF_SPECS
1250 #define DRIVER_SELF_SPECS ""
1253 /* Linking to libgomp implies pthreads. This is particularly important
1254 for targets that use different start files and suchlike. */
1255 #ifndef GOMP_SELF_SPECS
1256 #define GOMP_SELF_SPECS \
1257 "%{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1): " \
1261 /* Likewise for -fgnu-tm. */
1262 #ifndef GTM_SELF_SPECS
1263 #define GTM_SELF_SPECS "%{fgnu-tm: -pthread}"
1266 static const char *const driver_self_specs
[] = {
1267 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
1268 DRIVER_SELF_SPECS
, CONFIGURE_SPECS
, GOMP_SELF_SPECS
, GTM_SELF_SPECS
1271 #ifndef OPTION_DEFAULT_SPECS
1272 #define OPTION_DEFAULT_SPECS { "", "" }
1281 static const struct default_spec
1282 option_default_specs
[] = { OPTION_DEFAULT_SPECS
};
1286 struct user_specs
*next
;
1287 const char *filename
;
1290 static struct user_specs
*user_specs_head
, *user_specs_tail
;
1293 /* Record the mapping from file suffixes for compilation specs. */
1297 const char *suffix
; /* Use this compiler for input files
1298 whose names end in this suffix. */
1300 const char *spec
; /* To use this compiler, run this spec. */
1302 const char *cpp_spec
; /* If non-NULL, substitute this spec
1303 for `%C', rather than the usual
1305 int combinable
; /* If nonzero, compiler can deal with
1306 multiple source files at once (IMA). */
1307 int needs_preprocessing
; /* If nonzero, source files need to
1308 be run through a preprocessor. */
1311 /* Pointer to a vector of `struct compiler' that gives the spec for
1312 compiling a file, based on its suffix.
1313 A file that does not end in any of these suffixes will be passed
1314 unchanged to the loader and nothing else will be done to it.
1316 An entry containing two 0s is used to terminate the vector.
1318 If multiple entries match a file, the last matching one is used. */
1320 static struct compiler
*compilers
;
1322 /* Number of entries in `compilers', not counting the null terminator. */
1324 static int n_compilers
;
1326 /* The default list of file name suffixes and their compilation specs. */
1328 static const struct compiler default_compilers
[] =
1330 /* Add lists of suffixes of known languages here. If those languages
1331 were not present when we built the driver, we will hit these copies
1332 and be given a more meaningful error than "file not used since
1333 linking is not done". */
1334 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
1335 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
1336 {".mii", "#Objective-C++", 0, 0, 0},
1337 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
1338 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
1339 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
1340 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
1341 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
1342 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
1343 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
1344 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
1345 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
1346 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
1347 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
1348 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
1349 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
1350 {".r", "#Ratfor", 0, 0, 0},
1351 {".go", "#Go", 0, 1, 0},
1352 {".d", "#D", 0, 1, 0}, {".dd", "#D", 0, 1, 0}, {".di", "#D", 0, 1, 0},
1353 /* Next come the entries for C. */
1354 {".c", "@c", 0, 0, 1},
1356 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1357 external preprocessor if -save-temps is given. */
1358 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1361 %eGNU C no longer supports -traditional without -E}\
1362 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1363 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1364 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1366 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1367 cc1 %(cpp_unique_options) %(cc1_options)}}}\
1368 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
1370 "%{!E:%e-E or -x required when input is from standard input}\
1371 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
1372 {".h", "@c-header", 0, 0, 0},
1374 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1375 external preprocessor if -save-temps is given. */
1376 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1378 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1379 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1380 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1382 %{!fsyntax-only:%{!S:-o %g.s} \
1383 %{!fdump-ada-spec*:%{!o*:--output-pch=%i.gch}\
1384 %W{o*:--output-pch=%*}}%V}}\
1385 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1386 cc1 %(cpp_unique_options) %(cc1_options)\
1387 %{!fsyntax-only:%{!S:-o %g.s} \
1388 %{!fdump-ada-spec*:%{!o*:--output-pch=%i.gch}\
1389 %W{o*:--output-pch=%*}}%V}}}}}}}", 0, 0, 0},
1390 {".i", "@cpp-output", 0, 0, 0},
1392 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
1393 {".s", "@assembler", 0, 0, 0},
1395 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
1396 {".sx", "@assembler-with-cpp", 0, 0, 0},
1397 {".S", "@assembler-with-cpp", 0, 0, 0},
1398 {"@assembler-with-cpp",
1399 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
1400 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1401 %{E|M|MM:%(cpp_debug_options)}\
1402 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1403 as %(asm_debug) %(asm_options) %|.s %A }}}}"
1405 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1406 %{E|M|MM:%(cpp_debug_options)}\
1407 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1408 as %(asm_debug) %(asm_options) %m.s %A }}}}"
1413 /* Mark end of table. */
1417 /* Number of elements in default_compilers, not counting the terminator. */
1419 static const int n_default_compilers
= ARRAY_SIZE (default_compilers
) - 1;
1421 typedef char *char_p
; /* For DEF_VEC_P. */
1423 /* A vector of options to give to the linker.
1424 These options are accumulated by %x,
1425 and substituted into the linker command with %X. */
1426 static vec
<char_p
> linker_options
;
1428 /* A vector of options to give to the assembler.
1429 These options are accumulated by -Wa,
1430 and substituted into the assembler command with %Y. */
1431 static vec
<char_p
> assembler_options
;
1433 /* A vector of options to give to the preprocessor.
1434 These options are accumulated by -Wp,
1435 and substituted into the preprocessor command with %Z. */
1436 static vec
<char_p
> preprocessor_options
;
1439 skip_whitespace (char *p
)
1443 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1444 be considered whitespace. */
1445 if (p
[0] == '\n' && p
[1] == '\n' && p
[2] == '\n')
1447 else if (*p
== '\n' || *p
== ' ' || *p
== '\t')
1461 /* Structures to keep track of prefixes to try when looking for files. */
1465 const char *prefix
; /* String to prepend to the path. */
1466 struct prefix_list
*next
; /* Next in linked list. */
1467 int require_machine_suffix
; /* Don't use without machine_suffix. */
1468 /* 2 means try both machine_suffix and just_machine_suffix. */
1469 int priority
; /* Sort key - priority within list. */
1470 int os_multilib
; /* 1 if OS multilib scheme should be used,
1471 0 for GCC multilib scheme. */
1476 struct prefix_list
*plist
; /* List of prefixes to try */
1477 int max_len
; /* Max length of a prefix in PLIST */
1478 const char *name
; /* Name of this list (used in config stuff) */
1481 /* List of prefixes to try when looking for executables. */
1483 static struct path_prefix exec_prefixes
= { 0, 0, "exec" };
1485 /* List of prefixes to try when looking for startup (crt0) files. */
1487 static struct path_prefix startfile_prefixes
= { 0, 0, "startfile" };
1489 /* List of prefixes to try when looking for include files. */
1491 static struct path_prefix include_prefixes
= { 0, 0, "include" };
1493 /* Suffix to attach to directories searched for commands.
1494 This looks like `MACHINE/VERSION/'. */
1496 static const char *machine_suffix
= 0;
1498 /* Suffix to attach to directories searched for commands.
1499 This is just `MACHINE/'. */
1501 static const char *just_machine_suffix
= 0;
1503 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1505 static const char *gcc_exec_prefix
;
1507 /* Adjusted value of standard_libexec_prefix. */
1509 static const char *gcc_libexec_prefix
;
1511 /* Default prefixes to attach to command names. */
1513 #ifndef STANDARD_STARTFILE_PREFIX_1
1514 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1516 #ifndef STANDARD_STARTFILE_PREFIX_2
1517 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1520 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1521 #undef MD_EXEC_PREFIX
1522 #undef MD_STARTFILE_PREFIX
1523 #undef MD_STARTFILE_PREFIX_1
1526 /* If no prefixes defined, use the null string, which will disable them. */
1527 #ifndef MD_EXEC_PREFIX
1528 #define MD_EXEC_PREFIX ""
1530 #ifndef MD_STARTFILE_PREFIX
1531 #define MD_STARTFILE_PREFIX ""
1533 #ifndef MD_STARTFILE_PREFIX_1
1534 #define MD_STARTFILE_PREFIX_1 ""
1537 /* These directories are locations set at configure-time based on the
1538 --prefix option provided to configure. Their initializers are
1539 defined in Makefile.in. These paths are not *directly* used when
1540 gcc_exec_prefix is set because, in that case, we know where the
1541 compiler has been installed, and use paths relative to that
1542 location instead. */
1543 static const char *const standard_exec_prefix
= STANDARD_EXEC_PREFIX
;
1544 static const char *const standard_libexec_prefix
= STANDARD_LIBEXEC_PREFIX
;
1545 static const char *const standard_bindir_prefix
= STANDARD_BINDIR_PREFIX
;
1546 static const char *const standard_startfile_prefix
= STANDARD_STARTFILE_PREFIX
;
1548 /* For native compilers, these are well-known paths containing
1549 components that may be provided by the system. For cross
1550 compilers, these paths are not used. */
1551 static const char *md_exec_prefix
= MD_EXEC_PREFIX
;
1552 static const char *md_startfile_prefix
= MD_STARTFILE_PREFIX
;
1553 static const char *md_startfile_prefix_1
= MD_STARTFILE_PREFIX_1
;
1554 static const char *const standard_startfile_prefix_1
1555 = STANDARD_STARTFILE_PREFIX_1
;
1556 static const char *const standard_startfile_prefix_2
1557 = STANDARD_STARTFILE_PREFIX_2
;
1559 /* A relative path to be used in finding the location of tools
1560 relative to the driver. */
1561 static const char *const tooldir_base_prefix
= TOOLDIR_BASE_PREFIX
;
1563 /* A prefix to be used when this is an accelerator compiler. */
1564 static const char *const accel_dir_suffix
= ACCEL_DIR_SUFFIX
;
1566 /* Subdirectory to use for locating libraries. Set by
1567 set_multilib_dir based on the compilation options. */
1569 static const char *multilib_dir
;
1571 /* Subdirectory to use for locating libraries in OS conventions. Set by
1572 set_multilib_dir based on the compilation options. */
1574 static const char *multilib_os_dir
;
1576 /* Subdirectory to use for locating libraries in multiarch conventions. Set by
1577 set_multilib_dir based on the compilation options. */
1579 static const char *multiarch_dir
;
1581 /* Structure to keep track of the specs that have been defined so far.
1582 These are accessed using %(specname) in a compiler or link
1587 /* The following 2 fields must be first */
1588 /* to allow EXTRA_SPECS to be initialized */
1589 const char *name
; /* name of the spec. */
1590 const char *ptr
; /* available ptr if no static pointer */
1592 /* The following fields are not initialized */
1593 /* by EXTRA_SPECS */
1594 const char **ptr_spec
; /* pointer to the spec itself. */
1595 struct spec_list
*next
; /* Next spec in linked list. */
1596 int name_len
; /* length of the name */
1597 bool user_p
; /* whether string come from file spec. */
1598 bool alloc_p
; /* whether string was allocated */
1599 const char *default_ptr
; /* The default value of *ptr_spec. */
1602 #define INIT_STATIC_SPEC(NAME,PTR) \
1603 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, false, false, \
1606 /* List of statically defined specs. */
1607 static struct spec_list static_specs
[] =
1609 INIT_STATIC_SPEC ("asm", &asm_spec
),
1610 INIT_STATIC_SPEC ("asm_debug", &asm_debug
),
1611 INIT_STATIC_SPEC ("asm_final", &asm_final_spec
),
1612 INIT_STATIC_SPEC ("asm_options", &asm_options
),
1613 INIT_STATIC_SPEC ("invoke_as", &invoke_as
),
1614 INIT_STATIC_SPEC ("cpp", &cpp_spec
),
1615 INIT_STATIC_SPEC ("cpp_options", &cpp_options
),
1616 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options
),
1617 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options
),
1618 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp
),
1619 INIT_STATIC_SPEC ("cc1", &cc1_spec
),
1620 INIT_STATIC_SPEC ("cc1_options", &cc1_options
),
1621 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec
),
1622 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec
),
1623 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec
),
1624 INIT_STATIC_SPEC ("endfile", &endfile_spec
),
1625 INIT_STATIC_SPEC ("link", &link_spec
),
1626 INIT_STATIC_SPEC ("lib", &lib_spec
),
1627 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec
),
1628 INIT_STATIC_SPEC ("libgcc", &libgcc_spec
),
1629 INIT_STATIC_SPEC ("startfile", &startfile_spec
),
1630 INIT_STATIC_SPEC ("cross_compile", &cross_compile
),
1631 INIT_STATIC_SPEC ("version", &compiler_version
),
1632 INIT_STATIC_SPEC ("multilib", &multilib_select
),
1633 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults
),
1634 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra
),
1635 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches
),
1636 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions
),
1637 INIT_STATIC_SPEC ("multilib_options", &multilib_options
),
1638 INIT_STATIC_SPEC ("multilib_reuse", &multilib_reuse
),
1639 INIT_STATIC_SPEC ("linker", &linker_name_spec
),
1640 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec
),
1641 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec
),
1642 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec
),
1643 INIT_STATIC_SPEC ("post_link", &post_link_spec
),
1644 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec
),
1645 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix
),
1646 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix
),
1647 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1
),
1648 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec
),
1649 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec
),
1650 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec
),
1651 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec
),
1652 INIT_STATIC_SPEC ("self_spec", &self_spec
),
1655 #ifdef EXTRA_SPECS /* additional specs needed */
1656 /* Structure to keep track of just the first two args of a spec_list.
1657 That is all that the EXTRA_SPECS macro gives us. */
1660 const char *const name
;
1661 const char *const ptr
;
1664 static const struct spec_list_1 extra_specs_1
[] = { EXTRA_SPECS
};
1665 static struct spec_list
*extra_specs
= (struct spec_list
*) 0;
1668 /* List of dynamically allocates specs that have been defined so far. */
1670 static struct spec_list
*specs
= (struct spec_list
*) 0;
1672 /* List of static spec functions. */
1674 static const struct spec_function static_spec_functions
[] =
1676 { "getenv", getenv_spec_function
},
1677 { "if-exists", if_exists_spec_function
},
1678 { "if-exists-else", if_exists_else_spec_function
},
1679 { "sanitize", sanitize_spec_function
},
1680 { "replace-outfile", replace_outfile_spec_function
},
1681 { "remove-outfile", remove_outfile_spec_function
},
1682 { "version-compare", version_compare_spec_function
},
1683 { "include", include_spec_function
},
1684 { "find-file", find_file_spec_function
},
1685 { "find-plugindir", find_plugindir_spec_function
},
1686 { "print-asm-header", print_asm_header_spec_function
},
1687 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function
},
1688 { "compare-debug-self-opt", compare_debug_self_opt_spec_function
},
1689 { "pass-through-libs", pass_through_libs_spec_func
},
1690 { "dumps", dumps_spec_func
},
1691 { "gt", greater_than_spec_func
},
1692 { "debug-level-gt", debug_level_greater_than_spec_func
},
1693 { "fortran-preinclude-file", find_fortran_preinclude_file
},
1694 #ifdef EXTRA_SPEC_FUNCTIONS
1695 EXTRA_SPEC_FUNCTIONS
1700 static int processing_spec_function
;
1702 /* Add appropriate libgcc specs to OBSTACK, taking into account
1703 various permutations of -shared-libgcc, -shared, and such. */
1705 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1707 #ifndef USE_LD_AS_NEEDED
1708 #define USE_LD_AS_NEEDED 0
1712 init_gcc_specs (struct obstack
*obstack
, const char *shared_name
,
1713 const char *static_name
, const char *eh_name
)
1717 #if USE_LD_AS_NEEDED
1718 buf
= concat ("%{static|static-libgcc|static-pie:", static_name
, " ", eh_name
, "}"
1719 "%{!static:%{!static-libgcc:%{!static-pie:"
1720 "%{!shared-libgcc:",
1721 static_name
, " " LD_AS_NEEDED_OPTION
" ",
1722 shared_name
, " " LD_NO_AS_NEEDED_OPTION
1725 shared_name
, "%{!shared: ", static_name
, "}"
1728 buf
= concat ("%{static|static-libgcc:", static_name
, " ", eh_name
, "}"
1729 "%{!static:%{!static-libgcc:"
1731 "%{!shared-libgcc:", static_name
, " ", eh_name
, "}"
1732 "%{shared-libgcc:", shared_name
, " ", static_name
, "}"
1736 "%{shared-libgcc:", shared_name
, "}"
1737 "%{!shared-libgcc:", static_name
, "}"
1740 "%{shared:", shared_name
, "}"
1745 obstack_grow (obstack
, buf
, strlen (buf
));
1748 #endif /* ENABLE_SHARED_LIBGCC */
1750 /* Initialize the specs lookup routines. */
1755 struct spec_list
*next
= (struct spec_list
*) 0;
1756 struct spec_list
*sl
= (struct spec_list
*) 0;
1760 return; /* Already initialized. */
1763 fnotice (stderr
, "Using built-in specs.\n");
1766 extra_specs
= XCNEWVEC (struct spec_list
, ARRAY_SIZE (extra_specs_1
));
1768 for (i
= ARRAY_SIZE (extra_specs_1
) - 1; i
>= 0; i
--)
1770 sl
= &extra_specs
[i
];
1771 sl
->name
= extra_specs_1
[i
].name
;
1772 sl
->ptr
= extra_specs_1
[i
].ptr
;
1774 sl
->name_len
= strlen (sl
->name
);
1775 sl
->ptr_spec
= &sl
->ptr
;
1776 gcc_assert (sl
->ptr_spec
!= NULL
);
1777 sl
->default_ptr
= sl
->ptr
;
1782 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1784 sl
= &static_specs
[i
];
1789 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1790 /* ??? If neither -shared-libgcc nor --static-libgcc was
1791 seen, then we should be making an educated guess. Some proposed
1792 heuristics for ELF include:
1794 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1795 program will be doing dynamic loading, which will likely
1796 need the shared libgcc.
1798 (2) If "-ldl", then it's also a fair bet that we're doing
1801 (3) For each ET_DYN we're linking against (either through -lfoo
1802 or /some/path/foo.so), check to see whether it or one of
1803 its dependencies depends on a shared libgcc.
1807 If the runtime is fixed to look for program headers instead
1808 of calling __register_frame_info at all, for each object,
1809 use the shared libgcc if any EH symbol referenced.
1811 If crtstuff is fixed to not invoke __register_frame_info
1812 automatically, for each object, use the shared libgcc if
1813 any non-empty unwind section found.
1815 Doing any of this probably requires invoking an external program to
1816 do the actual object file scanning. */
1818 const char *p
= libgcc_spec
;
1821 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1822 when given the proper command line arguments. */
1825 if (in_sep
&& *p
== '-' && strncmp (p
, "-lgcc", 5) == 0)
1827 init_gcc_specs (&obstack
,
1829 #ifdef USE_LIBUNWIND_EXCEPTIONS
1835 #ifdef USE_LIBUNWIND_EXCEPTIONS
1836 # ifdef HAVE_LD_STATIC_DYNAMIC
1837 " %{!static:%{!static-pie:" LD_STATIC_OPTION
"}} -lunwind"
1838 " %{!static:%{!static-pie:" LD_DYNAMIC_OPTION
"}}"
1848 else if (in_sep
&& *p
== 'l' && strncmp (p
, "libgcc.a%s", 10) == 0)
1850 /* Ug. We don't know shared library extensions. Hope that
1851 systems that use this form don't do shared libraries. */
1852 init_gcc_specs (&obstack
,
1856 #ifdef USE_LIBUNWIND_EXCEPTIONS
1865 obstack_1grow (&obstack
, *p
);
1866 in_sep
= (*p
== ' ');
1871 obstack_1grow (&obstack
, '\0');
1872 libgcc_spec
= XOBFINISH (&obstack
, const char *);
1875 #ifdef USE_AS_TRADITIONAL_FORMAT
1876 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1878 static const char tf
[] = "--traditional-format ";
1879 obstack_grow (&obstack
, tf
, sizeof (tf
) - 1);
1880 obstack_grow0 (&obstack
, asm_spec
, strlen (asm_spec
));
1881 asm_spec
= XOBFINISH (&obstack
, const char *);
1885 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \
1886 defined LINKER_HASH_STYLE
1887 # ifdef LINK_BUILDID_SPEC
1888 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1889 obstack_grow (&obstack
, LINK_BUILDID_SPEC
, sizeof (LINK_BUILDID_SPEC
) - 1);
1891 # ifdef LINK_EH_SPEC
1892 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1893 obstack_grow (&obstack
, LINK_EH_SPEC
, sizeof (LINK_EH_SPEC
) - 1);
1895 # ifdef LINKER_HASH_STYLE
1896 /* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had
1899 static const char hash_style
[] = "--hash-style=";
1900 obstack_grow (&obstack
, hash_style
, sizeof (hash_style
) - 1);
1901 obstack_grow (&obstack
, LINKER_HASH_STYLE
, sizeof (LINKER_HASH_STYLE
) - 1);
1902 obstack_1grow (&obstack
, ' ');
1905 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
1906 link_spec
= XOBFINISH (&obstack
, const char *);
1912 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1913 removed; If the spec starts with a + then SPEC is added to the end of the
1917 set_spec (const char *name
, const char *spec
, bool user_p
)
1919 struct spec_list
*sl
;
1920 const char *old_spec
;
1921 int name_len
= strlen (name
);
1924 /* If this is the first call, initialize the statically allocated specs. */
1927 struct spec_list
*next
= (struct spec_list
*) 0;
1928 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1930 sl
= &static_specs
[i
];
1937 /* See if the spec already exists. */
1938 for (sl
= specs
; sl
; sl
= sl
->next
)
1939 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, name
))
1944 /* Not found - make it. */
1945 sl
= XNEW (struct spec_list
);
1946 sl
->name
= xstrdup (name
);
1947 sl
->name_len
= name_len
;
1948 sl
->ptr_spec
= &sl
->ptr
;
1950 *(sl
->ptr_spec
) = "";
1952 sl
->default_ptr
= NULL
;
1956 old_spec
= *(sl
->ptr_spec
);
1957 *(sl
->ptr_spec
) = ((spec
[0] == '+' && ISSPACE ((unsigned char)spec
[1]))
1958 ? concat (old_spec
, spec
+ 1, NULL
)
1963 fnotice (stderr
, "Setting spec %s to '%s'\n\n", name
, *(sl
->ptr_spec
));
1966 /* Free the old spec. */
1967 if (old_spec
&& sl
->alloc_p
)
1968 free (CONST_CAST (char *, old_spec
));
1970 sl
->user_p
= user_p
;
1974 /* Accumulate a command (program name and args), and run it. */
1976 typedef const char *const_char_p
; /* For DEF_VEC_P. */
1978 /* Vector of pointers to arguments in the current line of specifications. */
1979 static vec
<const_char_p
> argbuf
;
1981 /* Likewise, but for the current @file. */
1982 static vec
<const_char_p
> at_file_argbuf
;
1984 /* Whether an @file is currently open. */
1985 static bool in_at_file
= false;
1987 /* Were the options -c, -S or -E passed. */
1988 static int have_c
= 0;
1990 /* Was the option -o passed. */
1991 static int have_o
= 0;
1993 /* Was the option -E passed. */
1994 static int have_E
= 0;
1996 /* Pointer to output file name passed in with -o. */
1997 static const char *output_file
= 0;
1999 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
2000 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
2003 static struct temp_name
{
2004 const char *suffix
; /* suffix associated with the code. */
2005 int length
; /* strlen (suffix). */
2006 int unique
; /* Indicates whether %g or %u/%U was used. */
2007 const char *filename
; /* associated filename. */
2008 int filename_length
; /* strlen (filename). */
2009 struct temp_name
*next
;
2012 /* Number of commands executed so far. */
2014 static int execution_count
;
2016 /* Number of commands that exited with a signal. */
2018 static int signal_count
;
2020 /* Allocate the argument vector. */
2026 at_file_argbuf
.create (10);
2029 /* Clear out the vector of arguments (after a command is executed). */
2034 argbuf
.truncate (0);
2035 at_file_argbuf
.truncate (0);
2038 /* Add one argument to the vector at the end.
2039 This is done when a space is seen or at the end of the line.
2040 If DELETE_ALWAYS is nonzero, the arg is a filename
2041 and the file should be deleted eventually.
2042 If DELETE_FAILURE is nonzero, the arg is a filename
2043 and the file should be deleted if this compilation fails. */
2046 store_arg (const char *arg
, int delete_always
, int delete_failure
)
2049 at_file_argbuf
.safe_push (arg
);
2051 argbuf
.safe_push (arg
);
2053 if (delete_always
|| delete_failure
)
2056 /* If the temporary file we should delete is specified as
2057 part of a joined argument extract the filename. */
2059 && (p
= strrchr (arg
, '=')))
2061 record_temp_file (arg
, delete_always
, delete_failure
);
2065 /* Open a temporary @file into which subsequent arguments will be stored. */
2071 fatal_error (input_location
, "cannot open nested response file");
2076 /* Close the temporary @file and add @file to the argument list. */
2079 close_at_file (void)
2082 fatal_error (input_location
, "cannot close nonexistent response file");
2086 const unsigned int n_args
= at_file_argbuf
.length ();
2090 char **argv
= (char **) alloca (sizeof (char *) * (n_args
+ 1));
2091 char *temp_file
= make_temp_file ("");
2092 char *at_argument
= concat ("@", temp_file
, NULL
);
2093 FILE *f
= fopen (temp_file
, "w");
2097 /* Copy the strings over. */
2098 for (i
= 0; i
< n_args
; i
++)
2099 argv
[i
] = CONST_CAST (char *, at_file_argbuf
[i
]);
2102 at_file_argbuf
.truncate (0);
2105 fatal_error (input_location
, "could not open temporary response file %s",
2108 status
= writeargv (argv
, f
);
2111 fatal_error (input_location
,
2112 "could not write to temporary response file %s",
2115 status
= fclose (f
);
2118 fatal_error (input_location
, "could not close temporary response file %s",
2121 store_arg (at_argument
, 0, 0);
2123 record_temp_file (temp_file
, !save_temps_flag
, !save_temps_flag
);
2126 /* Load specs from a file name named FILENAME, replacing occurrences of
2127 various different types of line-endings, \r\n, \n\r and just \r, with
2131 load_specs (const char *filename
)
2135 struct stat statbuf
;
2142 fnotice (stderr
, "Reading specs from %s\n", filename
);
2144 /* Open and stat the file. */
2145 desc
= open (filename
, O_RDONLY
, 0);
2149 /* This leaves DESC open, but the OS will save us. */
2150 fatal_error (input_location
, "cannot read spec file %qs: %m", filename
);
2153 if (stat (filename
, &statbuf
) < 0)
2156 /* Read contents of file into BUFFER. */
2157 buffer
= XNEWVEC (char, statbuf
.st_size
+ 1);
2158 readlen
= read (desc
, buffer
, (unsigned) statbuf
.st_size
);
2161 buffer
[readlen
] = 0;
2164 specs
= XNEWVEC (char, readlen
+ 1);
2166 for (buffer_p
= buffer
; buffer_p
&& *buffer_p
; buffer_p
++)
2172 if (buffer_p
> buffer
&& *(buffer_p
- 1) == '\n') /* \n\r */
2174 else if (*(buffer_p
+ 1) == '\n') /* \r\n */
2188 /* Read compilation specs from a file named FILENAME,
2189 replacing the default ones.
2191 A suffix which starts with `*' is a definition for
2192 one of the machine-specific sub-specs. The "suffix" should be
2193 *asm, *cc1, *cpp, *link, *startfile, etc.
2194 The corresponding spec is stored in asm_spec, etc.,
2195 rather than in the `compilers' vector.
2197 Anything invalid in the file is a fatal error. */
2200 read_specs (const char *filename
, bool main_p
, bool user_p
)
2205 buffer
= load_specs (filename
);
2207 /* Scan BUFFER for specs, putting them in the vector. */
2213 char *in
, *out
, *p1
, *p2
, *p3
;
2215 /* Advance P in BUFFER to the next nonblank nocomment line. */
2216 p
= skip_whitespace (p
);
2220 /* Is this a special command that starts with '%'? */
2221 /* Don't allow this for the main specs file, since it would
2222 encourage people to overwrite it. */
2223 if (*p
== '%' && !main_p
)
2226 while (*p
&& *p
!= '\n')
2232 if (!strncmp (p1
, "%include", sizeof ("%include") - 1)
2233 && (p1
[sizeof "%include" - 1] == ' '
2234 || p1
[sizeof "%include" - 1] == '\t'))
2238 p1
+= sizeof ("%include");
2239 while (*p1
== ' ' || *p1
== '\t')
2242 if (*p1
++ != '<' || p
[-2] != '>')
2243 fatal_error (input_location
,
2244 "specs %%include syntax malformed after "
2246 (long) (p1
- buffer
+ 1));
2249 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
2250 read_specs (new_filename
? new_filename
: p1
, false, user_p
);
2253 else if (!strncmp (p1
, "%include_noerr", sizeof "%include_noerr" - 1)
2254 && (p1
[sizeof "%include_noerr" - 1] == ' '
2255 || p1
[sizeof "%include_noerr" - 1] == '\t'))
2259 p1
+= sizeof "%include_noerr";
2260 while (*p1
== ' ' || *p1
== '\t')
2263 if (*p1
++ != '<' || p
[-2] != '>')
2264 fatal_error (input_location
,
2265 "specs %%include syntax malformed after "
2267 (long) (p1
- buffer
+ 1));
2270 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
2272 read_specs (new_filename
, false, user_p
);
2273 else if (verbose_flag
)
2274 fnotice (stderr
, "could not find specs file %s\n", p1
);
2277 else if (!strncmp (p1
, "%rename", sizeof "%rename" - 1)
2278 && (p1
[sizeof "%rename" - 1] == ' '
2279 || p1
[sizeof "%rename" - 1] == '\t'))
2282 struct spec_list
*sl
;
2283 struct spec_list
*newsl
;
2285 /* Get original name. */
2286 p1
+= sizeof "%rename";
2287 while (*p1
== ' ' || *p1
== '\t')
2290 if (! ISALPHA ((unsigned char) *p1
))
2291 fatal_error (input_location
,
2292 "specs %%rename syntax malformed after "
2294 (long) (p1
- buffer
));
2297 while (*p2
&& !ISSPACE ((unsigned char) *p2
))
2300 if (*p2
!= ' ' && *p2
!= '\t')
2301 fatal_error (input_location
,
2302 "specs %%rename syntax malformed after "
2304 (long) (p2
- buffer
));
2308 while (*p2
== ' ' || *p2
== '\t')
2311 if (! ISALPHA ((unsigned char) *p2
))
2312 fatal_error (input_location
,
2313 "specs %%rename syntax malformed after "
2315 (long) (p2
- buffer
));
2317 /* Get new spec name. */
2319 while (*p3
&& !ISSPACE ((unsigned char) *p3
))
2323 fatal_error (input_location
,
2324 "specs %%rename syntax malformed after "
2326 (long) (p3
- buffer
));
2329 for (sl
= specs
; sl
; sl
= sl
->next
)
2330 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, p1
))
2334 fatal_error (input_location
,
2335 "specs %s spec was not found to be renamed", p1
);
2337 if (strcmp (p1
, p2
) == 0)
2340 for (newsl
= specs
; newsl
; newsl
= newsl
->next
)
2341 if (strcmp (newsl
->name
, p2
) == 0)
2342 fatal_error (input_location
,
2343 "%s: attempt to rename spec %qs to "
2344 "already defined spec %qs",
2349 fnotice (stderr
, "rename spec %s to %s\n", p1
, p2
);
2351 fnotice (stderr
, "spec is '%s'\n\n", *(sl
->ptr_spec
));
2355 set_spec (p2
, *(sl
->ptr_spec
), user_p
);
2357 free (CONST_CAST (char *, *(sl
->ptr_spec
)));
2359 *(sl
->ptr_spec
) = "";
2364 fatal_error (input_location
,
2365 "specs unknown %% command after %ld characters",
2366 (long) (p1
- buffer
));
2369 /* Find the colon that should end the suffix. */
2371 while (*p1
&& *p1
!= ':' && *p1
!= '\n')
2374 /* The colon shouldn't be missing. */
2376 fatal_error (input_location
,
2377 "specs file malformed after %ld characters",
2378 (long) (p1
- buffer
));
2380 /* Skip back over trailing whitespace. */
2382 while (p2
> buffer
&& (p2
[-1] == ' ' || p2
[-1] == '\t'))
2385 /* Copy the suffix to a string. */
2386 suffix
= save_string (p
, p2
- p
);
2387 /* Find the next line. */
2388 p
= skip_whitespace (p1
+ 1);
2390 fatal_error (input_location
,
2391 "specs file malformed after %ld characters",
2392 (long) (p
- buffer
));
2395 /* Find next blank line or end of string. */
2396 while (*p1
&& !(*p1
== '\n' && (p1
[1] == '\n' || p1
[1] == '\0')))
2399 /* Specs end at the blank line and do not include the newline. */
2400 spec
= save_string (p
, p1
- p
);
2403 /* Delete backslash-newline sequences from the spec. */
2408 if (in
[0] == '\\' && in
[1] == '\n')
2410 else if (in
[0] == '#')
2411 while (*in
&& *in
!= '\n')
2419 if (suffix
[0] == '*')
2421 if (! strcmp (suffix
, "*link_command"))
2422 link_command_spec
= spec
;
2425 set_spec (suffix
+ 1, spec
, user_p
);
2431 /* Add this pair to the vector. */
2433 = XRESIZEVEC (struct compiler
, compilers
, n_compilers
+ 2);
2435 compilers
[n_compilers
].suffix
= suffix
;
2436 compilers
[n_compilers
].spec
= spec
;
2438 memset (&compilers
[n_compilers
], 0, sizeof compilers
[n_compilers
]);
2442 link_command_spec
= spec
;
2445 if (link_command_spec
== 0)
2446 fatal_error (input_location
, "spec file has no spec for linking");
2448 XDELETEVEC (buffer
);
2451 /* Record the names of temporary files we tell compilers to write,
2452 and delete them at the end of the run. */
2454 /* This is the common prefix we use to make temp file names.
2455 It is chosen once for each run of this program.
2456 It is substituted into a spec by %g or %j.
2457 Thus, all temp file names contain this prefix.
2458 In practice, all temp file names start with this prefix.
2460 This prefix comes from the envvar TMPDIR if it is defined;
2461 otherwise, from the P_tmpdir macro if that is defined;
2462 otherwise, in /usr/tmp or /tmp;
2463 or finally the current directory if all else fails. */
2465 static const char *temp_filename
;
2467 /* Length of the prefix. */
2469 static int temp_filename_length
;
2471 /* Define the list of temporary files to delete. */
2476 struct temp_file
*next
;
2479 /* Queue of files to delete on success or failure of compilation. */
2480 static struct temp_file
*always_delete_queue
;
2481 /* Queue of files to delete on failure of compilation. */
2482 static struct temp_file
*failure_delete_queue
;
2484 /* Record FILENAME as a file to be deleted automatically.
2485 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2486 otherwise delete it in any case.
2487 FAIL_DELETE nonzero means delete it if a compilation step fails;
2488 otherwise delete it in any case. */
2491 record_temp_file (const char *filename
, int always_delete
, int fail_delete
)
2493 char *const name
= xstrdup (filename
);
2497 struct temp_file
*temp
;
2498 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
2499 if (! filename_cmp (name
, temp
->name
))
2505 temp
= XNEW (struct temp_file
);
2506 temp
->next
= always_delete_queue
;
2508 always_delete_queue
= temp
;
2515 struct temp_file
*temp
;
2516 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
2517 if (! filename_cmp (name
, temp
->name
))
2523 temp
= XNEW (struct temp_file
);
2524 temp
->next
= failure_delete_queue
;
2526 failure_delete_queue
= temp
;
2532 /* Delete all the temporary files whose names we previously recorded. */
2534 #ifndef DELETE_IF_ORDINARY
2535 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2538 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2539 if (unlink (NAME) < 0) \
2541 error ("%s: %m", (NAME)); \
2546 delete_if_ordinary (const char *name
)
2552 printf ("Delete %s? (y or n) ", name
);
2556 while ((c
= getchar ()) != '\n' && c
!= EOF
)
2559 if (i
== 'y' || i
== 'Y')
2561 DELETE_IF_ORDINARY (name
, st
, verbose_flag
);
2565 delete_temp_files (void)
2567 struct temp_file
*temp
;
2569 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
2570 delete_if_ordinary (temp
->name
);
2571 always_delete_queue
= 0;
2574 /* Delete all the files to be deleted on error. */
2577 delete_failure_queue (void)
2579 struct temp_file
*temp
;
2581 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
2582 delete_if_ordinary (temp
->name
);
2586 clear_failure_queue (void)
2588 failure_delete_queue
= 0;
2591 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2593 If DO_MULTI is true iterate over the paths twice, first with multilib
2594 suffix then without, otherwise iterate over the paths once without
2595 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2596 to avoid visiting the same path twice, but we could do better. For
2597 instance, /usr/lib/../lib is considered different from /usr/lib.
2598 At least EXTRA_SPACE chars past the end of the path passed to
2599 CALLBACK are available for use by the callback.
2600 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2602 Returns the value returned by CALLBACK. */
2605 for_each_path (const struct path_prefix
*paths
,
2608 void *(*callback
) (char *, void *),
2609 void *callback_info
)
2611 struct prefix_list
*pl
;
2612 const char *multi_dir
= NULL
;
2613 const char *multi_os_dir
= NULL
;
2614 const char *multiarch_suffix
= NULL
;
2615 const char *multi_suffix
;
2616 const char *just_multi_suffix
;
2619 bool skip_multi_dir
= false;
2620 bool skip_multi_os_dir
= false;
2622 multi_suffix
= machine_suffix
;
2623 just_multi_suffix
= just_machine_suffix
;
2624 if (do_multi
&& multilib_dir
&& strcmp (multilib_dir
, ".") != 0)
2626 multi_dir
= concat (multilib_dir
, dir_separator_str
, NULL
);
2627 multi_suffix
= concat (multi_suffix
, multi_dir
, NULL
);
2628 just_multi_suffix
= concat (just_multi_suffix
, multi_dir
, NULL
);
2630 if (do_multi
&& multilib_os_dir
&& strcmp (multilib_os_dir
, ".") != 0)
2631 multi_os_dir
= concat (multilib_os_dir
, dir_separator_str
, NULL
);
2633 multiarch_suffix
= concat (multiarch_dir
, dir_separator_str
, NULL
);
2637 size_t multi_dir_len
= 0;
2638 size_t multi_os_dir_len
= 0;
2639 size_t multiarch_len
= 0;
2641 size_t just_suffix_len
;
2645 multi_dir_len
= strlen (multi_dir
);
2647 multi_os_dir_len
= strlen (multi_os_dir
);
2648 if (multiarch_suffix
)
2649 multiarch_len
= strlen (multiarch_suffix
);
2650 suffix_len
= strlen (multi_suffix
);
2651 just_suffix_len
= strlen (just_multi_suffix
);
2655 len
= paths
->max_len
+ extra_space
+ 1;
2656 len
+= MAX (MAX (suffix_len
, multi_os_dir_len
), multiarch_len
);
2657 path
= XNEWVEC (char, len
);
2660 for (pl
= paths
->plist
; pl
!= 0; pl
= pl
->next
)
2662 len
= strlen (pl
->prefix
);
2663 memcpy (path
, pl
->prefix
, len
);
2665 /* Look first in MACHINE/VERSION subdirectory. */
2666 if (!skip_multi_dir
)
2668 memcpy (path
+ len
, multi_suffix
, suffix_len
+ 1);
2669 ret
= callback (path
, callback_info
);
2674 /* Some paths are tried with just the machine (ie. target)
2675 subdir. This is used for finding as, ld, etc. */
2677 && pl
->require_machine_suffix
== 2)
2679 memcpy (path
+ len
, just_multi_suffix
, just_suffix_len
+ 1);
2680 ret
= callback (path
, callback_info
);
2685 /* Now try the multiarch path. */
2687 && !pl
->require_machine_suffix
&& multiarch_dir
)
2689 memcpy (path
+ len
, multiarch_suffix
, multiarch_len
+ 1);
2690 ret
= callback (path
, callback_info
);
2695 /* Now try the base path. */
2696 if (!pl
->require_machine_suffix
2697 && !(pl
->os_multilib
? skip_multi_os_dir
: skip_multi_dir
))
2699 const char *this_multi
;
2700 size_t this_multi_len
;
2702 if (pl
->os_multilib
)
2704 this_multi
= multi_os_dir
;
2705 this_multi_len
= multi_os_dir_len
;
2709 this_multi
= multi_dir
;
2710 this_multi_len
= multi_dir_len
;
2714 memcpy (path
+ len
, this_multi
, this_multi_len
+ 1);
2718 ret
= callback (path
, callback_info
);
2726 if (multi_dir
== NULL
&& multi_os_dir
== NULL
)
2729 /* Run through the paths again, this time without multilibs.
2730 Don't repeat any we have already seen. */
2733 free (CONST_CAST (char *, multi_dir
));
2735 free (CONST_CAST (char *, multi_suffix
));
2736 multi_suffix
= machine_suffix
;
2737 free (CONST_CAST (char *, just_multi_suffix
));
2738 just_multi_suffix
= just_machine_suffix
;
2741 skip_multi_dir
= true;
2744 free (CONST_CAST (char *, multi_os_dir
));
2745 multi_os_dir
= NULL
;
2748 skip_multi_os_dir
= true;
2753 free (CONST_CAST (char *, multi_dir
));
2754 free (CONST_CAST (char *, multi_suffix
));
2755 free (CONST_CAST (char *, just_multi_suffix
));
2758 free (CONST_CAST (char *, multi_os_dir
));
2764 /* Callback for build_search_list. Adds path to obstack being built. */
2766 struct add_to_obstack_info
{
2773 add_to_obstack (char *path
, void *data
)
2775 struct add_to_obstack_info
*info
= (struct add_to_obstack_info
*) data
;
2777 if (info
->check_dir
&& !is_directory (path
, false))
2780 if (!info
->first_time
)
2781 obstack_1grow (info
->ob
, PATH_SEPARATOR
);
2783 obstack_grow (info
->ob
, path
, strlen (path
));
2785 info
->first_time
= false;
2789 /* Add or change the value of an environment variable, outputting the
2790 change to standard error if in verbose mode. */
2792 xputenv (const char *string
)
2797 /* Build a list of search directories from PATHS.
2798 PREFIX is a string to prepend to the list.
2799 If CHECK_DIR_P is true we ensure the directory exists.
2800 If DO_MULTI is true, multilib paths are output first, then
2802 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2803 It is also used by the --print-search-dirs flag. */
2806 build_search_list (const struct path_prefix
*paths
, const char *prefix
,
2807 bool check_dir
, bool do_multi
)
2809 struct add_to_obstack_info info
;
2811 info
.ob
= &collect_obstack
;
2812 info
.check_dir
= check_dir
;
2813 info
.first_time
= true;
2815 obstack_grow (&collect_obstack
, prefix
, strlen (prefix
));
2816 obstack_1grow (&collect_obstack
, '=');
2818 for_each_path (paths
, do_multi
, 0, add_to_obstack
, &info
);
2820 obstack_1grow (&collect_obstack
, '\0');
2821 return XOBFINISH (&collect_obstack
, char *);
2824 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2828 putenv_from_prefixes (const struct path_prefix
*paths
, const char *env_var
,
2831 xputenv (build_search_list (paths
, env_var
, true, do_multi
));
2834 /* Check whether NAME can be accessed in MODE. This is like access,
2835 except that it never considers directories to be executable. */
2838 access_check (const char *name
, int mode
)
2844 if (stat (name
, &st
) < 0
2845 || S_ISDIR (st
.st_mode
))
2849 return access (name
, mode
);
2852 /* Callback for find_a_file. Appends the file name to the directory
2853 path. If the resulting file exists in the right mode, return the
2854 full pathname to the file. */
2856 struct file_at_path_info
{
2865 file_at_path (char *path
, void *data
)
2867 struct file_at_path_info
*info
= (struct file_at_path_info
*) data
;
2868 size_t len
= strlen (path
);
2870 memcpy (path
+ len
, info
->name
, info
->name_len
);
2871 len
+= info
->name_len
;
2873 /* Some systems have a suffix for executable files.
2874 So try appending that first. */
2875 if (info
->suffix_len
)
2877 memcpy (path
+ len
, info
->suffix
, info
->suffix_len
+ 1);
2878 if (access_check (path
, info
->mode
) == 0)
2883 if (access_check (path
, info
->mode
) == 0)
2889 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2890 access to check permissions. If DO_MULTI is true, search multilib
2891 paths then non-multilib paths, otherwise do not search multilib paths.
2892 Return 0 if not found, otherwise return its name, allocated with malloc. */
2895 find_a_file (const struct path_prefix
*pprefix
, const char *name
, int mode
,
2898 struct file_at_path_info info
;
2900 #ifdef DEFAULT_ASSEMBLER
2901 if (! strcmp (name
, "as") && access (DEFAULT_ASSEMBLER
, mode
) == 0)
2902 return xstrdup (DEFAULT_ASSEMBLER
);
2905 #ifdef DEFAULT_LINKER
2906 if (! strcmp (name
, "ld") && access (DEFAULT_LINKER
, mode
) == 0)
2907 return xstrdup (DEFAULT_LINKER
);
2910 /* Determine the filename to execute (special case for absolute paths). */
2912 if (IS_ABSOLUTE_PATH (name
))
2914 if (access (name
, mode
) == 0)
2915 return xstrdup (name
);
2921 info
.suffix
= (mode
& X_OK
) != 0 ? HOST_EXECUTABLE_SUFFIX
: "";
2922 info
.name_len
= strlen (info
.name
);
2923 info
.suffix_len
= strlen (info
.suffix
);
2926 return (char*) for_each_path (pprefix
, do_multi
,
2927 info
.name_len
+ info
.suffix_len
,
2928 file_at_path
, &info
);
2931 /* Ranking of prefixes in the sort list. -B prefixes are put before
2934 enum path_prefix_priority
2936 PREFIX_PRIORITY_B_OPT
,
2937 PREFIX_PRIORITY_LAST
2940 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2941 order according to PRIORITY. Within each PRIORITY, new entries are
2944 If WARN is nonzero, we will warn if no file is found
2945 through this prefix. WARN should point to an int
2946 which will be set to 1 if this entry is used.
2948 COMPONENT is the value to be passed to update_path.
2950 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2951 the complete value of machine_suffix.
2952 2 means try both machine_suffix and just_machine_suffix. */
2955 add_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2956 const char *component
, /* enum prefix_priority */ int priority
,
2957 int require_machine_suffix
, int os_multilib
)
2959 struct prefix_list
*pl
, **prev
;
2962 for (prev
= &pprefix
->plist
;
2963 (*prev
) != NULL
&& (*prev
)->priority
<= priority
;
2964 prev
= &(*prev
)->next
)
2967 /* Keep track of the longest prefix. */
2969 prefix
= update_path (prefix
, component
);
2970 len
= strlen (prefix
);
2971 if (len
> pprefix
->max_len
)
2972 pprefix
->max_len
= len
;
2974 pl
= XNEW (struct prefix_list
);
2975 pl
->prefix
= prefix
;
2976 pl
->require_machine_suffix
= require_machine_suffix
;
2977 pl
->priority
= priority
;
2978 pl
->os_multilib
= os_multilib
;
2980 /* Insert after PREV. */
2985 /* Same as add_prefix, but prepending target_system_root to prefix. */
2986 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2988 add_sysrooted_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2989 const char *component
,
2990 /* enum prefix_priority */ int priority
,
2991 int require_machine_suffix
, int os_multilib
)
2993 if (!IS_ABSOLUTE_PATH (prefix
))
2994 fatal_error (input_location
, "system path %qs is not absolute", prefix
);
2996 if (target_system_root
)
2998 char *sysroot_no_trailing_dir_separator
= xstrdup (target_system_root
);
2999 size_t sysroot_len
= strlen (target_system_root
);
3002 && target_system_root
[sysroot_len
- 1] == DIR_SEPARATOR
)
3003 sysroot_no_trailing_dir_separator
[sysroot_len
- 1] = '\0';
3005 if (target_sysroot_suffix
)
3006 prefix
= concat (sysroot_no_trailing_dir_separator
,
3007 target_sysroot_suffix
, prefix
, NULL
);
3009 prefix
= concat (sysroot_no_trailing_dir_separator
, prefix
, NULL
);
3011 free (sysroot_no_trailing_dir_separator
);
3013 /* We have to override this because GCC's notion of sysroot
3014 moves along with GCC. */
3018 add_prefix (pprefix
, prefix
, component
, priority
,
3019 require_machine_suffix
, os_multilib
);
3022 /* Same as add_prefix, but prepending target_sysroot_hdrs_suffix to prefix. */
3025 add_sysrooted_hdrs_prefix (struct path_prefix
*pprefix
, const char *prefix
,
3026 const char *component
,
3027 /* enum prefix_priority */ int priority
,
3028 int require_machine_suffix
, int os_multilib
)
3030 if (!IS_ABSOLUTE_PATH (prefix
))
3031 fatal_error (input_location
, "system path %qs is not absolute", prefix
);
3033 if (target_system_root
)
3035 char *sysroot_no_trailing_dir_separator
= xstrdup (target_system_root
);
3036 size_t sysroot_len
= strlen (target_system_root
);
3039 && target_system_root
[sysroot_len
- 1] == DIR_SEPARATOR
)
3040 sysroot_no_trailing_dir_separator
[sysroot_len
- 1] = '\0';
3042 if (target_sysroot_hdrs_suffix
)
3043 prefix
= concat (sysroot_no_trailing_dir_separator
,
3044 target_sysroot_hdrs_suffix
, prefix
, NULL
);
3046 prefix
= concat (sysroot_no_trailing_dir_separator
, prefix
, NULL
);
3048 free (sysroot_no_trailing_dir_separator
);
3050 /* We have to override this because GCC's notion of sysroot
3051 moves along with GCC. */
3055 add_prefix (pprefix
, prefix
, component
, priority
,
3056 require_machine_suffix
, os_multilib
);
3060 /* Execute the command specified by the arguments on the current line of spec.
3061 When using pipes, this includes several piped-together commands
3062 with `|' between them.
3064 Return 0 if successful, -1 if failed. */
3070 int n_commands
; /* # of command. */
3072 struct pex_obj
*pex
;
3075 const char *prog
; /* program name. */
3076 const char **argv
; /* vector of args. */
3080 struct command
*commands
; /* each command buffer with above info. */
3082 gcc_assert (!processing_spec_function
);
3086 string
= find_a_file (&exec_prefixes
,
3087 argbuf
[0], X_OK
, false);
3090 insert_wrapper (wrapper_string
);
3093 /* Count # of piped commands. */
3094 for (n_commands
= 1, i
= 0; argbuf
.iterate (i
, &arg
); i
++)
3095 if (strcmp (arg
, "|") == 0)
3098 /* Get storage for each command. */
3099 commands
= (struct command
*) alloca (n_commands
* sizeof (struct command
));
3101 /* Split argbuf into its separate piped processes,
3102 and record info about each one.
3103 Also search for the programs that are to be run. */
3105 argbuf
.safe_push (0);
3107 commands
[0].prog
= argbuf
[0]; /* first command. */
3108 commands
[0].argv
= argbuf
.address ();
3110 if (!wrapper_string
)
3112 string
= find_a_file (&exec_prefixes
, commands
[0].prog
, X_OK
, false);
3114 commands
[0].argv
[0] = string
;
3117 for (n_commands
= 1, i
= 0; argbuf
.iterate (i
, &arg
); i
++)
3118 if (arg
&& strcmp (arg
, "|") == 0)
3119 { /* each command. */
3120 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
3121 fatal_error (input_location
, "%<-pipe%> not supported");
3123 argbuf
[i
] = 0; /* Termination of command args. */
3124 commands
[n_commands
].prog
= argbuf
[i
+ 1];
3125 commands
[n_commands
].argv
3126 = &(argbuf
.address ())[i
+ 1];
3127 string
= find_a_file (&exec_prefixes
, commands
[n_commands
].prog
,
3130 commands
[n_commands
].argv
[0] = string
;
3134 /* If -v, print what we are about to do, and maybe query. */
3138 /* For help listings, put a blank line between sub-processes. */
3139 if (print_help_list
)
3140 fputc ('\n', stderr
);
3142 /* Print each piped command as a separate line. */
3143 for (i
= 0; i
< n_commands
; i
++)
3145 const char *const *j
;
3147 if (verbose_only_flag
)
3149 for (j
= commands
[i
].argv
; *j
; j
++)
3152 for (p
= *j
; *p
; ++p
)
3153 if (!ISALNUM ((unsigned char) *p
)
3154 && *p
!= '_' && *p
!= '/' && *p
!= '-' && *p
!= '.')
3158 fprintf (stderr
, " \"");
3159 for (p
= *j
; *p
; ++p
)
3161 if (*p
== '"' || *p
== '\\' || *p
== '$')
3162 fputc ('\\', stderr
);
3165 fputc ('"', stderr
);
3167 /* If it's empty, print "". */
3169 fprintf (stderr
, " \"\"");
3171 fprintf (stderr
, " %s", *j
);
3175 for (j
= commands
[i
].argv
; *j
; j
++)
3176 /* If it's empty, print "". */
3178 fprintf (stderr
, " \"\"");
3180 fprintf (stderr
, " %s", *j
);
3182 /* Print a pipe symbol after all but the last command. */
3183 if (i
+ 1 != n_commands
)
3184 fprintf (stderr
, " |");
3185 fprintf (stderr
, "\n");
3188 if (verbose_only_flag
!= 0)
3190 /* verbose_only_flag should act as if the spec was
3191 executed, so increment execution_count before
3192 returning. This prevents spurious warnings about
3193 unused linker input files, etc. */
3198 fnotice (stderr
, "\nGo ahead? (y or n) ");
3202 while (getchar () != '\n')
3205 if (i
!= 'y' && i
!= 'Y')
3210 #ifdef ENABLE_VALGRIND_CHECKING
3211 /* Run the each command through valgrind. To simplify prepending the
3212 path to valgrind and the option "-q" (for quiet operation unless
3213 something triggers), we allocate a separate argv array. */
3215 for (i
= 0; i
< n_commands
; i
++)
3221 for (argc
= 0; commands
[i
].argv
[argc
] != NULL
; argc
++)
3224 argv
= XALLOCAVEC (const char *, argc
+ 3);
3226 argv
[0] = VALGRIND_PATH
;
3228 for (j
= 2; j
< argc
+ 2; j
++)
3229 argv
[j
] = commands
[i
].argv
[j
- 2];
3232 commands
[i
].argv
= argv
;
3233 commands
[i
].prog
= argv
[0];
3237 /* Run each piped subprocess. */
3239 pex
= pex_init (PEX_USE_PIPES
| ((report_times
|| report_times_to_file
)
3240 ? PEX_RECORD_TIMES
: 0),
3241 progname
, temp_filename
);
3243 fatal_error (input_location
, "%<pex_init%> failed: %m");
3245 for (i
= 0; i
< n_commands
; i
++)
3249 const char *string
= commands
[i
].argv
[0];
3251 errmsg
= pex_run (pex
,
3252 ((i
+ 1 == n_commands
? PEX_LAST
: 0)
3253 | (string
== commands
[i
].prog
? PEX_SEARCH
: 0)),
3254 string
, CONST_CAST (char **, commands
[i
].argv
),
3259 fatal_error (input_location
,
3260 err
? G_("cannot execute %qs: %s: %m")
3261 : G_("cannot execute %qs: %s"),
3265 if (i
&& string
!= commands
[i
].prog
)
3266 free (CONST_CAST (char *, string
));
3271 /* Wait for all the subprocesses to finish. */
3275 struct pex_time
*times
= NULL
;
3278 statuses
= (int *) alloca (n_commands
* sizeof (int));
3279 if (!pex_get_status (pex
, n_commands
, statuses
))
3280 fatal_error (input_location
, "failed to get exit status: %m");
3282 if (report_times
|| report_times_to_file
)
3284 times
= (struct pex_time
*) alloca (n_commands
* sizeof (struct pex_time
));
3285 if (!pex_get_times (pex
, n_commands
, times
))
3286 fatal_error (input_location
, "failed to get process times: %m");
3291 for (i
= 0; i
< n_commands
; ++i
)
3293 int status
= statuses
[i
];
3295 if (WIFSIGNALED (status
))
3296 switch (WTERMSIG (status
))
3300 /* SIGQUIT and SIGKILL are not available on MinGW. */
3307 /* The user (or environment) did something to the
3308 inferior. Making this an ICE confuses the user into
3309 thinking there's a compiler bug. Much more likely is
3310 the user or OOM killer nuked it. */
3311 fatal_error (input_location
,
3312 "%s signal terminated program %s",
3313 strsignal (WTERMSIG (status
)),
3319 /* SIGPIPE is a special case. It happens in -pipe mode
3320 when the compiler dies before the preprocessor is
3321 done, or the assembler dies before the compiler is
3322 done. There's generally been an error already, and
3323 this is just fallout. So don't generate another
3324 error unless we would otherwise have succeeded. */
3325 if (signal_count
|| greatest_status
>= MIN_FATAL_STATUS
)
3335 /* The inferior failed to catch the signal. */
3336 internal_error_no_backtrace ("%s signal terminated program %s",
3337 strsignal (WTERMSIG (status
)),
3340 else if (WIFEXITED (status
)
3341 && WEXITSTATUS (status
) >= MIN_FATAL_STATUS
)
3343 /* For ICEs in cc1, cc1obj, cc1plus see if it is
3344 reproducible or not. */
3347 && WEXITSTATUS (status
) == ICE_EXIT_CODE
3349 && (p
= strrchr (commands
[0].argv
[0], DIR_SEPARATOR
))
3350 && ! strncmp (p
+ 1, "cc1", 3))
3351 try_generate_repro (commands
[0].argv
);
3352 if (WEXITSTATUS (status
) > greatest_status
)
3353 greatest_status
= WEXITSTATUS (status
);
3357 if (report_times
|| report_times_to_file
)
3359 struct pex_time
*pt
= ×
[i
];
3362 ut
= ((double) pt
->user_seconds
3363 + (double) pt
->user_microseconds
/ 1.0e6
);
3364 st
= ((double) pt
->system_seconds
3365 + (double) pt
->system_microseconds
/ 1.0e6
);
3370 fnotice (stderr
, "# %s %.2f %.2f\n",
3371 commands
[i
].prog
, ut
, st
);
3373 if (report_times_to_file
)
3376 const char *const *j
;
3378 fprintf (report_times_to_file
, "%g %g", ut
, st
);
3380 for (j
= &commands
[i
].prog
; *j
; j
= &commands
[i
].argv
[++c
])
3383 for (p
= *j
; *p
; ++p
)
3384 if (*p
== '"' || *p
== '\\' || *p
== '$'
3390 fprintf (report_times_to_file
, " \"");
3391 for (p
= *j
; *p
; ++p
)
3393 if (*p
== '"' || *p
== '\\' || *p
== '$')
3394 fputc ('\\', report_times_to_file
);
3395 fputc (*p
, report_times_to_file
);
3397 fputc ('"', report_times_to_file
);
3400 fprintf (report_times_to_file
, " %s", *j
);
3403 fputc ('\n', report_times_to_file
);
3409 if (commands
[0].argv
[0] != commands
[0].prog
)
3410 free (CONST_CAST (char *, commands
[0].argv
[0]));
3416 /* Find all the switches given to us
3417 and make a vector describing them.
3418 The elements of the vector are strings, one per switch given.
3419 If a switch uses following arguments, then the `part1' field
3420 is the switch itself and the `args' field
3421 is a null-terminated vector containing the following arguments.
3422 Bits in the `live_cond' field are:
3423 SWITCH_LIVE to indicate this switch is true in a conditional spec.
3424 SWITCH_FALSE to indicate this switch is overridden by a later switch.
3425 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
3426 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored.
3427 SWITCH_KEEP_FOR_GCC to indicate that this switch, otherwise ignored,
3428 should be included in COLLECT_GCC_OPTIONS.
3429 in all do_spec calls afterwards. Used for %<S from self specs.
3430 The `known' field describes whether this is an internal switch.
3431 The `validated' field describes whether any spec has looked at this switch;
3432 if it remains false at the end of the run, the switch must be meaningless.
3433 The `ordering' field is used to temporarily mark switches that have to be
3434 kept in a specific order. */
3436 #define SWITCH_LIVE (1 << 0)
3437 #define SWITCH_FALSE (1 << 1)
3438 #define SWITCH_IGNORE (1 << 2)
3439 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
3440 #define SWITCH_KEEP_FOR_GCC (1 << 4)
3446 unsigned int live_cond
;
3452 static struct switchstr
*switches
;
3454 static int n_switches
;
3456 static int n_switches_alloc
;
3458 /* Set to zero if -fcompare-debug is disabled, positive if it's
3459 enabled and we're running the first compilation, negative if it's
3460 enabled and we're running the second compilation. For most of the
3461 time, it's in the range -1..1, but it can be temporarily set to 2
3462 or 3 to indicate that the -fcompare-debug flags didn't come from
3463 the command-line, but rather from the GCC_COMPARE_DEBUG environment
3464 variable, until a synthesized -fcompare-debug flag is added to the
3468 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
3469 int compare_debug_second
;
3471 /* Set to the flags that should be passed to the second compilation in
3472 a -fcompare-debug compilation. */
3473 const char *compare_debug_opt
;
3475 static struct switchstr
*switches_debug_check
[2];
3477 static int n_switches_debug_check
[2];
3479 static int n_switches_alloc_debug_check
[2];
3481 static char *debug_check_temp_file
[2];
3483 /* Language is one of three things:
3485 1) The name of a real programming language.
3486 2) NULL, indicating that no one has figured out
3488 3) '*', indicating that the file should be passed
3493 const char *language
;
3494 struct compiler
*incompiler
;
3499 /* Also a vector of input files specified. */
3501 static struct infile
*infiles
;
3505 static int n_infiles_alloc
;
3507 /* True if undefined environment variables encountered during spec processing
3508 are ok to ignore, typically when we're running for --help or --version. */
3510 static bool spec_undefvar_allowed
;
3512 /* True if multiple input files are being compiled to a single
3515 static bool combine_inputs
;
3517 /* This counts the number of libraries added by lang_specific_driver, so that
3518 we can tell if there were any user supplied any files or libraries. */
3520 static int added_libraries
;
3522 /* And a vector of corresponding output files is made up later. */
3524 const char **outfiles
;
3526 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3528 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
3529 is true if we should look for an executable suffix. DO_OBJ
3530 is true if we should look for an object suffix. */
3533 convert_filename (const char *name
, int do_exe ATTRIBUTE_UNUSED
,
3534 int do_obj ATTRIBUTE_UNUSED
)
3536 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3544 len
= strlen (name
);
3546 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3547 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
3548 if (do_obj
&& len
> 2
3549 && name
[len
- 2] == '.'
3550 && name
[len
- 1] == 'o')
3552 obstack_grow (&obstack
, name
, len
- 2);
3553 obstack_grow0 (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
3554 name
= XOBFINISH (&obstack
, const char *);
3558 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3559 /* If there is no filetype, make it the executable suffix (which includes
3560 the "."). But don't get confused if we have just "-o". */
3561 if (! do_exe
|| TARGET_EXECUTABLE_SUFFIX
[0] == 0 || (len
== 2 && name
[0] == '-'))
3564 for (i
= len
- 1; i
>= 0; i
--)
3565 if (IS_DIR_SEPARATOR (name
[i
]))
3568 for (i
++; i
< len
; i
++)
3572 obstack_grow (&obstack
, name
, len
);
3573 obstack_grow0 (&obstack
, TARGET_EXECUTABLE_SUFFIX
,
3574 strlen (TARGET_EXECUTABLE_SUFFIX
));
3575 name
= XOBFINISH (&obstack
, const char *);
3582 /* Display the command line switches accepted by gcc. */
3586 printf (_("Usage: %s [options] file...\n"), progname
);
3587 fputs (_("Options:\n"), stdout
);
3589 fputs (_(" -pass-exit-codes Exit with highest error code from a phase.\n"), stdout
);
3590 fputs (_(" --help Display this information.\n"), stdout
);
3591 fputs (_(" --target-help Display target specific command line options.\n"), stdout
);
3592 fputs (_(" --help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumented}}[,...].\n"), stdout
);
3593 fputs (_(" Display specific types of command line options.\n"), stdout
);
3595 fputs (_(" (Use '-v --help' to display command line options of sub-processes).\n"), stdout
);
3596 fputs (_(" --version Display compiler version information.\n"), stdout
);
3597 fputs (_(" -dumpspecs Display all of the built in spec strings.\n"), stdout
);
3598 fputs (_(" -dumpversion Display the version of the compiler.\n"), stdout
);
3599 fputs (_(" -dumpmachine Display the compiler's target processor.\n"), stdout
);
3600 fputs (_(" -print-search-dirs Display the directories in the compiler's search path.\n"), stdout
);
3601 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library.\n"), stdout
);
3602 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>.\n"), stdout
);
3603 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>.\n"), stdout
);
3605 -print-multiarch Display the target's normalized GNU triplet, used as\n\
3606 a component in the library path.\n"), stdout
);
3607 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc.\n"), stdout
);
3609 -print-multi-lib Display the mapping between command line options and\n\
3610 multiple library search directories.\n"), stdout
);
3611 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries.\n"), stdout
);
3612 fputs (_(" -print-sysroot Display the target libraries directory.\n"), stdout
);
3613 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers.\n"), stdout
);
3614 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler.\n"), stdout
);
3615 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor.\n"), stdout
);
3616 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker.\n"), stdout
);
3617 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler.\n"), stdout
);
3618 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor.\n"), stdout
);
3619 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker.\n"), stdout
);
3620 fputs (_(" -save-temps Do not delete intermediate files.\n"), stdout
);
3621 fputs (_(" -save-temps=<arg> Do not delete intermediate files.\n"), stdout
);
3623 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
3624 prefixes to other gcc components.\n"), stdout
);
3625 fputs (_(" -pipe Use pipes rather than intermediate files.\n"), stdout
);
3626 fputs (_(" -time Time the execution of each subprocess.\n"), stdout
);
3627 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>.\n"), stdout
);
3628 fputs (_(" -std=<standard> Assume that the input sources are for <standard>.\n"), stdout
);
3630 --sysroot=<directory> Use <directory> as the root directory for headers\n\
3631 and libraries.\n"), stdout
);
3632 fputs (_(" -B <directory> Add <directory> to the compiler's search paths.\n"), stdout
);
3633 fputs (_(" -v Display the programs invoked by the compiler.\n"), stdout
);
3634 fputs (_(" -### Like -v but options quoted and commands not executed.\n"), stdout
);
3635 fputs (_(" -E Preprocess only; do not compile, assemble or link.\n"), stdout
);
3636 fputs (_(" -S Compile only; do not assemble or link.\n"), stdout
);
3637 fputs (_(" -c Compile and assemble, but do not link.\n"), stdout
);
3638 fputs (_(" -o <file> Place the output into <file>.\n"), stdout
);
3639 fputs (_(" -pie Create a dynamically linked position independent\n\
3640 executable.\n"), stdout
);
3641 fputs (_(" -shared Create a shared library.\n"), stdout
);
3643 -x <language> Specify the language of the following input files.\n\
3644 Permissible languages include: c c++ assembler none\n\
3645 'none' means revert to the default behavior of\n\
3646 guessing the language based on the file's extension.\n\
3650 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3651 passed on to the various sub-processes invoked by %s. In order to pass\n\
3652 other options on to these processes the -W<letter> options must be used.\n\
3655 /* The rest of the options are displayed by invocations of the various
3660 add_preprocessor_option (const char *option
, int len
)
3662 preprocessor_options
.safe_push (save_string (option
, len
));
3666 add_assembler_option (const char *option
, int len
)
3668 assembler_options
.safe_push (save_string (option
, len
));
3672 add_linker_option (const char *option
, int len
)
3674 linker_options
.safe_push (save_string (option
, len
));
3677 /* Allocate space for an input file in infiles. */
3682 if (n_infiles_alloc
== 0)
3684 n_infiles_alloc
= 16;
3685 infiles
= XNEWVEC (struct infile
, n_infiles_alloc
);
3687 else if (n_infiles_alloc
== n_infiles
)
3689 n_infiles_alloc
*= 2;
3690 infiles
= XRESIZEVEC (struct infile
, infiles
, n_infiles_alloc
);
3694 /* Store an input file with the given NAME and LANGUAGE in
3698 add_infile (const char *name
, const char *language
)
3701 infiles
[n_infiles
].name
= name
;
3702 infiles
[n_infiles
++].language
= language
;
3705 /* Allocate space for a switch in switches. */
3710 if (n_switches_alloc
== 0)
3712 n_switches_alloc
= 16;
3713 switches
= XNEWVEC (struct switchstr
, n_switches_alloc
);
3715 else if (n_switches_alloc
== n_switches
)
3717 n_switches_alloc
*= 2;
3718 switches
= XRESIZEVEC (struct switchstr
, switches
, n_switches_alloc
);
3722 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3723 as validated if VALIDATED and KNOWN if it is an internal switch. */
3726 save_switch (const char *opt
, size_t n_args
, const char *const *args
,
3727 bool validated
, bool known
)
3730 switches
[n_switches
].part1
= opt
+ 1;
3732 switches
[n_switches
].args
= 0;
3735 switches
[n_switches
].args
= XNEWVEC (const char *, n_args
+ 1);
3736 memcpy (switches
[n_switches
].args
, args
, n_args
* sizeof (const char *));
3737 switches
[n_switches
].args
[n_args
] = NULL
;
3740 switches
[n_switches
].live_cond
= 0;
3741 switches
[n_switches
].validated
= validated
;
3742 switches
[n_switches
].known
= known
;
3743 switches
[n_switches
].ordering
= 0;
3747 /* Set the SOURCE_DATE_EPOCH environment variable to the current time if it is
3751 set_source_date_epoch_envvar ()
3753 /* Array size is 21 = ceil(log_10(2^64)) + 1 to hold string representations
3754 of 64 bit integers. */
3755 char source_date_epoch
[21];
3760 if (tt
< (time_t) 0 || errno
!= 0)
3763 snprintf (source_date_epoch
, 21, "%llu", (unsigned long long) tt
);
3764 /* Using setenv instead of xputenv because we want the variable to remain
3765 after finalizing so that it's still set in the second run when using
3767 setenv ("SOURCE_DATE_EPOCH", source_date_epoch
, 0);
3770 /* Handle an option DECODED that is unknown to the option-processing
3774 driver_unknown_option_callback (const struct cl_decoded_option
*decoded
)
3776 const char *opt
= decoded
->arg
;
3777 if (opt
[1] == 'W' && opt
[2] == 'n' && opt
[3] == 'o' && opt
[4] == '-'
3778 && !(decoded
->errors
& CL_ERR_NEGATIVE
))
3780 /* Leave unknown -Wno-* options for the compiler proper, to be
3781 diagnosed only if there are warnings. */
3782 save_switch (decoded
->canonical_option
[0],
3783 decoded
->canonical_option_num_elements
- 1,
3784 &decoded
->canonical_option
[1], false, true);
3787 if (decoded
->opt_index
== OPT_SPECIAL_unknown
)
3789 /* Give it a chance to define it a spec file. */
3790 save_switch (decoded
->canonical_option
[0],
3791 decoded
->canonical_option_num_elements
- 1,
3792 &decoded
->canonical_option
[1], false, false);
3799 /* Handle an option DECODED that is not marked as CL_DRIVER.
3800 LANG_MASK will always be CL_DRIVER. */
3803 driver_wrong_lang_callback (const struct cl_decoded_option
*decoded
,
3804 unsigned int lang_mask ATTRIBUTE_UNUSED
)
3806 /* At this point, non-driver options are accepted (and expected to
3807 be passed down by specs) unless marked to be rejected by the
3808 driver. Options to be rejected by the driver but accepted by the
3809 compilers proper are treated just like completely unknown
3811 const struct cl_option
*option
= &cl_options
[decoded
->opt_index
];
3813 if (option
->cl_reject_driver
)
3814 error ("unrecognized command-line option %qs",
3815 decoded
->orig_option_with_args_text
);
3817 save_switch (decoded
->canonical_option
[0],
3818 decoded
->canonical_option_num_elements
- 1,
3819 &decoded
->canonical_option
[1], false, true);
3822 static const char *spec_lang
= 0;
3823 static int last_language_n_infiles
;
3825 /* Parse -foffload option argument. */
3828 handle_foffload_option (const char *arg
)
3830 const char *c
, *cur
, *n
, *next
, *end
;
3833 /* If option argument starts with '-' then no target is specified and we
3834 do not need to parse it. */
3838 end
= strchr (arg
, '=');
3840 end
= strchr (arg
, '\0');
3845 next
= strchr (cur
, ',');
3848 next
= (next
> end
) ? end
: next
;
3850 target
= XNEWVEC (char, next
- cur
+ 1);
3851 memcpy (target
, cur
, next
- cur
);
3852 target
[next
- cur
] = '\0';
3854 /* If 'disable' is passed to the option, stop parsing the option and clean
3855 the list of offload targets. */
3856 if (strcmp (target
, "disable") == 0)
3858 free (offload_targets
);
3859 offload_targets
= xstrdup ("");
3863 /* Check that GCC is configured to support the offload target. */
3864 c
= OFFLOAD_TARGETS
;
3867 n
= strchr (c
, ',');
3869 n
= strchr (c
, '\0');
3871 if (next
- cur
== n
- c
&& strncmp (target
, c
, n
- c
) == 0)
3874 c
= *n
? n
+ 1 : NULL
;
3878 fatal_error (input_location
,
3879 "GCC is not configured to support %s as offload target",
3882 if (!offload_targets
)
3884 offload_targets
= target
;
3889 /* Check that the target hasn't already presented in the list. */
3890 c
= offload_targets
;
3893 n
= strchr (c
, ':');
3895 n
= strchr (c
, '\0');
3897 if (next
- cur
== n
- c
&& strncmp (c
, target
, n
- c
) == 0)
3904 /* If duplicate is not found, append the target to the list. */
3907 size_t offload_targets_len
= strlen (offload_targets
);
3909 = XRESIZEVEC (char, offload_targets
,
3910 offload_targets_len
+ 1 + next
- cur
+ 1);
3911 offload_targets
[offload_targets_len
++] = ':';
3912 memcpy (offload_targets
+ offload_targets_len
, target
, next
- cur
+ 1);
3917 XDELETEVEC (target
);
3921 /* Handle a driver option; arguments and return value as for
3925 driver_handle_option (struct gcc_options
*opts
,
3926 struct gcc_options
*opts_set
,
3927 const struct cl_decoded_option
*decoded
,
3928 unsigned int lang_mask ATTRIBUTE_UNUSED
, int kind
,
3930 const struct cl_option_handlers
*handlers ATTRIBUTE_UNUSED
,
3931 diagnostic_context
*dc
,
3934 size_t opt_index
= decoded
->opt_index
;
3935 const char *arg
= decoded
->arg
;
3936 const char *compare_debug_replacement_opt
;
3937 int value
= decoded
->value
;
3938 bool validated
= false;
3939 bool do_save
= true;
3941 gcc_assert (opts
== &global_options
);
3942 gcc_assert (opts_set
== &global_options_set
);
3943 gcc_assert (kind
== DK_UNSPECIFIED
);
3944 gcc_assert (loc
== UNKNOWN_LOCATION
);
3945 gcc_assert (dc
== global_dc
);
3951 struct spec_list
*sl
;
3953 for (sl
= specs
; sl
; sl
= sl
->next
)
3954 printf ("*%s:\n%s\n\n", sl
->name
, *(sl
->ptr_spec
));
3955 if (link_command_spec
)
3956 printf ("*link_command:\n%s\n\n", link_command_spec
);
3960 case OPT_dumpversion
:
3961 printf ("%s\n", spec_version
);
3964 case OPT_dumpmachine
:
3965 printf ("%s\n", spec_machine
);
3968 case OPT_dumpfullversion
:
3969 printf ("%s\n", BASEVER
);
3975 /* CPP driver cannot obtain switch from cc1_options. */
3977 add_preprocessor_option ("--version", strlen ("--version"));
3978 add_assembler_option ("--version", strlen ("--version"));
3979 add_linker_option ("--version", strlen ("--version"));
3982 case OPT__completion_
:
3984 completion
= decoded
->arg
;
3988 print_help_list
= 1;
3990 /* CPP driver cannot obtain switch from cc1_options. */
3992 add_preprocessor_option ("--help", 6);
3993 add_assembler_option ("--help", 6);
3994 add_linker_option ("--help", 6);
3998 print_subprocess_help
= 2;
4001 case OPT__target_help
:
4002 print_subprocess_help
= 1;
4004 /* CPP driver cannot obtain switch from cc1_options. */
4006 add_preprocessor_option ("--target-help", 13);
4007 add_assembler_option ("--target-help", 13);
4008 add_linker_option ("--target-help", 13);
4011 case OPT__no_sysroot_suffix
:
4012 case OPT_pass_exit_codes
:
4013 case OPT_print_search_dirs
:
4014 case OPT_print_file_name_
:
4015 case OPT_print_prog_name_
:
4016 case OPT_print_multi_lib
:
4017 case OPT_print_multi_directory
:
4018 case OPT_print_sysroot
:
4019 case OPT_print_multi_os_directory
:
4020 case OPT_print_multiarch
:
4021 case OPT_print_sysroot_headers_suffix
:
4024 /* These options set the variables specified in common.opt
4025 automatically, and do not need to be saved for spec
4030 case OPT_print_libgcc_file_name
:
4031 print_file_name
= "libgcc.a";
4035 case OPT_fuse_ld_bfd
:
4039 case OPT_fuse_ld_gold
:
4043 case OPT_fcompare_debug_second
:
4044 compare_debug_second
= 1;
4047 case OPT_fcompare_debug
:
4051 compare_debug_replacement_opt
= "-fcompare-debug=";
4053 goto compare_debug_with_arg
;
4056 compare_debug_replacement_opt
= "-fcompare-debug=-gtoggle";
4058 goto compare_debug_with_arg
;
4065 case OPT_fcompare_debug_
:
4066 compare_debug_replacement_opt
= decoded
->canonical_option
[0];
4067 compare_debug_with_arg
:
4068 gcc_assert (decoded
->canonical_option_num_elements
== 1);
4069 gcc_assert (arg
!= NULL
);
4074 if (compare_debug
< 0)
4075 compare_debug_opt
= NULL
;
4077 compare_debug_opt
= arg
;
4078 save_switch (compare_debug_replacement_opt
, 0, NULL
, validated
, true);
4079 set_source_date_epoch_envvar ();
4082 case OPT_fdiagnostics_color_
:
4083 diagnostic_color_init (dc
, value
);
4086 case OPT_fdiagnostics_urls_
:
4087 diagnostic_urls_init (dc
, value
);
4090 case OPT_fdiagnostics_format_
:
4091 diagnostic_output_format_init (dc
,
4092 (enum diagnostics_output_format
)value
);
4098 /* Pass the rest of this option to the assembler. */
4100 /* Split the argument at commas. */
4102 for (j
= 0; arg
[j
]; j
++)
4105 add_assembler_option (arg
+ prev
, j
- prev
);
4109 /* Record the part after the last comma. */
4110 add_assembler_option (arg
+ prev
, j
- prev
);
4118 /* Pass the rest of this option to the preprocessor. */
4120 /* Split the argument at commas. */
4122 for (j
= 0; arg
[j
]; j
++)
4125 add_preprocessor_option (arg
+ prev
, j
- prev
);
4129 /* Record the part after the last comma. */
4130 add_preprocessor_option (arg
+ prev
, j
- prev
);
4138 /* Split the argument at commas. */
4140 for (j
= 0; arg
[j
]; j
++)
4143 add_infile (save_string (arg
+ prev
, j
- prev
), "*");
4146 /* Record the part after the last comma. */
4147 add_infile (arg
+ prev
, "*");
4153 add_infile (arg
, "*");
4157 case OPT_Xpreprocessor
:
4158 add_preprocessor_option (arg
, strlen (arg
));
4162 case OPT_Xassembler
:
4163 add_assembler_option (arg
, strlen (arg
));
4168 /* POSIX allows separation of -l and the lib arg; canonicalize
4169 by concatenating -l with its arg */
4170 add_infile (concat ("-l", arg
, NULL
), "*");
4175 /* Similarly, canonicalize -L for linkers that may not accept
4176 separate arguments. */
4177 save_switch (concat ("-L", arg
, NULL
), 0, NULL
, validated
, true);
4182 save_switch (concat ("-F", arg
, NULL
), 0, NULL
, validated
, true);
4185 case OPT_save_temps
:
4186 if (!save_temps_flag
)
4187 save_temps_flag
= SAVE_TEMPS_DUMP
;
4191 case OPT_save_temps_
:
4192 if (strcmp (arg
, "cwd") == 0)
4193 save_temps_flag
= SAVE_TEMPS_CWD
;
4194 else if (strcmp (arg
, "obj") == 0
4195 || strcmp (arg
, "object") == 0)
4196 save_temps_flag
= SAVE_TEMPS_OBJ
;
4198 fatal_error (input_location
, "%qs is an unknown %<-save-temps%> option",
4199 decoded
->orig_option_with_args_text
);
4200 save_temps_overrides_dumpdir
= true;
4205 dumpdir
= xstrdup (arg
);
4206 save_temps_overrides_dumpdir
= false;
4211 dumpbase
= xstrdup (arg
);
4214 case OPT_dumpbase_ext
:
4215 free (dumpbase_ext
);
4216 dumpbase_ext
= xstrdup (arg
);
4219 case OPT_no_canonical_prefixes
:
4220 /* Already handled as a special case, so ignored here. */
4226 /* These options set the variables specified in common.opt
4227 automatically, but do need to be saved for spec
4233 struct user_specs
*user
= XNEW (struct user_specs
);
4235 user
->next
= (struct user_specs
*) 0;
4236 user
->filename
= arg
;
4237 if (user_specs_tail
)
4238 user_specs_tail
->next
= user
;
4240 user_specs_head
= user
;
4241 user_specs_tail
= user
;
4247 target_system_root
= arg
;
4248 target_system_root_changed
= 1;
4253 if (report_times_to_file
)
4254 fclose (report_times_to_file
);
4255 report_times_to_file
= fopen (arg
, "a");
4261 This is similar to -v except that there is no execution
4262 of the commands and the echoed arguments are quoted. It
4263 is intended for use in shell scripts to capture the
4264 driver-generated command line. */
4265 verbose_only_flag
++;
4272 size_t len
= strlen (arg
);
4274 /* Catch the case where the user has forgotten to append a
4275 directory separator to the path. Note, they may be using
4276 -B to add an executable name prefix, eg "i386-elf-", in
4277 order to distinguish between multiple installations of
4278 GCC in the same directory. Hence we must check to see
4279 if appending a directory separator actually makes a
4280 valid directory name. */
4281 if (!IS_DIR_SEPARATOR (arg
[len
- 1])
4282 && is_directory (arg
, false))
4284 char *tmp
= XNEWVEC (char, len
+ 2);
4286 tmp
[len
] = DIR_SEPARATOR
;
4291 add_prefix (&exec_prefixes
, arg
, NULL
,
4292 PREFIX_PRIORITY_B_OPT
, 0, 0);
4293 add_prefix (&startfile_prefixes
, arg
, NULL
,
4294 PREFIX_PRIORITY_B_OPT
, 0, 0);
4295 add_prefix (&include_prefixes
, arg
, NULL
,
4296 PREFIX_PRIORITY_B_OPT
, 0, 0);
4307 if (!strcmp (spec_lang
, "none"))
4308 /* Suppress the warning if -xnone comes after the last input
4309 file, because alternate command interfaces like g++ might
4310 find it useful to place -xnone after each input file. */
4313 last_language_n_infiles
= n_infiles
;
4319 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
4320 arg
= convert_filename (arg
, ! have_c
, 0);
4323 /* On some systems, ld cannot handle "-o" without a space. So
4324 split the option from its argument. */
4325 save_switch ("-o", 1, &arg
, validated
, true);
4328 #ifdef ENABLE_DEFAULT_PIE
4330 /* -pie is turned on by default. */
4333 case OPT_static_libgcc
:
4334 case OPT_shared_libgcc
:
4335 case OPT_static_libgfortran
:
4336 case OPT_static_libstdc__
:
4337 /* These are always valid, since gcc.c itself understands the
4338 first two, gfortranspec.c understands -static-libgfortran and
4339 g++spec.c understands -static-libstdc++ */
4348 handle_foffload_option (arg
);
4352 /* Various driver options need no special processing at this
4353 point, having been handled in a prescan above or being
4354 handled by specs. */
4359 save_switch (decoded
->canonical_option
[0],
4360 decoded
->canonical_option_num_elements
- 1,
4361 &decoded
->canonical_option
[1], validated
, true);
4365 /* Return true if F2 is F1 followed by a single suffix, i.e., by a
4366 period and additional characters other than a period. */
4369 adds_single_suffix_p (const char *f2
, const char *f1
)
4371 size_t len
= strlen (f1
);
4373 return (strncmp (f1
, f2
, len
) == 0
4375 && strchr (f2
+ len
+ 1, '.') == NULL
);
4378 /* Put the driver's standard set of option handlers in *HANDLERS. */
4381 set_option_handlers (struct cl_option_handlers
*handlers
)
4383 handlers
->unknown_option_callback
= driver_unknown_option_callback
;
4384 handlers
->wrong_lang_callback
= driver_wrong_lang_callback
;
4385 handlers
->num_handlers
= 3;
4386 handlers
->handlers
[0].handler
= driver_handle_option
;
4387 handlers
->handlers
[0].mask
= CL_DRIVER
;
4388 handlers
->handlers
[1].handler
= common_handle_option
;
4389 handlers
->handlers
[1].mask
= CL_COMMON
;
4390 handlers
->handlers
[2].handler
= target_handle_option
;
4391 handlers
->handlers
[2].mask
= CL_TARGET
;
4395 /* Return the index into infiles for the single non-library
4396 non-lto-wpa input file, -1 if there isn't any, or -2 if there is
4399 single_input_file_index ()
4403 for (int i
= 0; i
< n_infiles
; i
++)
4405 if (infiles
[i
].language
4406 && (infiles
[i
].language
[0] == '*'
4408 && strcmp (infiles
[i
].language
, "lto") == 0)))
4420 /* Create the vector `switches' and its contents.
4421 Store its length in `n_switches'. */
4424 process_command (unsigned int decoded_options_count
,
4425 struct cl_decoded_option
*decoded_options
)
4429 char *tooldir_prefix
, *tooldir_prefix2
;
4430 char *(*get_relative_prefix
) (const char *, const char *,
4431 const char *) = NULL
;
4432 struct cl_option_handlers handlers
;
4435 gcc_exec_prefix
= env
.get ("GCC_EXEC_PREFIX");
4439 added_libraries
= 0;
4441 /* Figure compiler version from version string. */
4443 compiler_version
= temp1
= xstrdup (version_string
);
4445 for (; *temp1
; ++temp1
)
4454 /* Handle any -no-canonical-prefixes flag early, to assign the function
4455 that builds relative prefixes. This function creates default search
4456 paths that are needed later in normal option handling. */
4458 for (j
= 1; j
< decoded_options_count
; j
++)
4460 if (decoded_options
[j
].opt_index
== OPT_no_canonical_prefixes
)
4462 get_relative_prefix
= make_relative_prefix_ignore_links
;
4466 if (! get_relative_prefix
)
4467 get_relative_prefix
= make_relative_prefix
;
4469 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
4470 see if we can create it from the pathname specified in
4471 decoded_options[0].arg. */
4473 gcc_libexec_prefix
= standard_libexec_prefix
;
4475 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
4476 if (!gcc_exec_prefix
)
4478 gcc_exec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
4479 standard_bindir_prefix
,
4480 standard_exec_prefix
);
4481 gcc_libexec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
4482 standard_bindir_prefix
,
4483 standard_libexec_prefix
);
4484 if (gcc_exec_prefix
)
4485 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix
, NULL
));
4489 /* make_relative_prefix requires a program name, but
4490 GCC_EXEC_PREFIX is typically a directory name with a trailing
4491 / (which is ignored by make_relative_prefix), so append a
4493 char *tmp_prefix
= concat (gcc_exec_prefix
, "gcc", NULL
);
4494 gcc_libexec_prefix
= get_relative_prefix (tmp_prefix
,
4495 standard_exec_prefix
,
4496 standard_libexec_prefix
);
4498 /* The path is unrelocated, so fallback to the original setting. */
4499 if (!gcc_libexec_prefix
)
4500 gcc_libexec_prefix
= standard_libexec_prefix
;
4506 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
4507 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
4508 or an automatically created GCC_EXEC_PREFIX from
4509 decoded_options[0].arg. */
4511 /* Do language-specific adjustment/addition of flags. */
4512 lang_specific_driver (&decoded_options
, &decoded_options_count
,
4515 if (gcc_exec_prefix
)
4517 int len
= strlen (gcc_exec_prefix
);
4519 if (len
> (int) sizeof ("/lib/gcc/") - 1
4520 && (IS_DIR_SEPARATOR (gcc_exec_prefix
[len
-1])))
4522 temp
= gcc_exec_prefix
+ len
- sizeof ("/lib/gcc/") + 1;
4523 if (IS_DIR_SEPARATOR (*temp
)
4524 && filename_ncmp (temp
+ 1, "lib", 3) == 0
4525 && IS_DIR_SEPARATOR (temp
[4])
4526 && filename_ncmp (temp
+ 5, "gcc", 3) == 0)
4527 len
-= sizeof ("/lib/gcc/") - 1;
4530 set_std_prefix (gcc_exec_prefix
, len
);
4531 add_prefix (&exec_prefixes
, gcc_libexec_prefix
, "GCC",
4532 PREFIX_PRIORITY_LAST
, 0, 0);
4533 add_prefix (&startfile_prefixes
, gcc_exec_prefix
, "GCC",
4534 PREFIX_PRIORITY_LAST
, 0, 0);
4537 /* COMPILER_PATH and LIBRARY_PATH have values
4538 that are lists of directory names with colons. */
4540 temp
= env
.get ("COMPILER_PATH");
4543 const char *startp
, *endp
;
4544 char *nstore
= (char *) alloca (strlen (temp
) + 3);
4546 startp
= endp
= temp
;
4549 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
4551 strncpy (nstore
, startp
, endp
- startp
);
4553 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
4554 else if (!IS_DIR_SEPARATOR (endp
[-1]))
4556 nstore
[endp
- startp
] = DIR_SEPARATOR
;
4557 nstore
[endp
- startp
+ 1] = 0;
4560 nstore
[endp
- startp
] = 0;
4561 add_prefix (&exec_prefixes
, nstore
, 0,
4562 PREFIX_PRIORITY_LAST
, 0, 0);
4563 add_prefix (&include_prefixes
, nstore
, 0,
4564 PREFIX_PRIORITY_LAST
, 0, 0);
4567 endp
= startp
= endp
+ 1;
4574 temp
= env
.get (LIBRARY_PATH_ENV
);
4575 if (temp
&& *cross_compile
== '0')
4577 const char *startp
, *endp
;
4578 char *nstore
= (char *) alloca (strlen (temp
) + 3);
4580 startp
= endp
= temp
;
4583 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
4585 strncpy (nstore
, startp
, endp
- startp
);
4587 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
4588 else if (!IS_DIR_SEPARATOR (endp
[-1]))
4590 nstore
[endp
- startp
] = DIR_SEPARATOR
;
4591 nstore
[endp
- startp
+ 1] = 0;
4594 nstore
[endp
- startp
] = 0;
4595 add_prefix (&startfile_prefixes
, nstore
, NULL
,
4596 PREFIX_PRIORITY_LAST
, 0, 1);
4599 endp
= startp
= endp
+ 1;
4606 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
4607 temp
= env
.get ("LPATH");
4608 if (temp
&& *cross_compile
== '0')
4610 const char *startp
, *endp
;
4611 char *nstore
= (char *) alloca (strlen (temp
) + 3);
4613 startp
= endp
= temp
;
4616 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
4618 strncpy (nstore
, startp
, endp
- startp
);
4620 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
4621 else if (!IS_DIR_SEPARATOR (endp
[-1]))
4623 nstore
[endp
- startp
] = DIR_SEPARATOR
;
4624 nstore
[endp
- startp
+ 1] = 0;
4627 nstore
[endp
- startp
] = 0;
4628 add_prefix (&startfile_prefixes
, nstore
, NULL
,
4629 PREFIX_PRIORITY_LAST
, 0, 1);
4632 endp
= startp
= endp
+ 1;
4639 /* Process the options and store input files and switches in their
4642 last_language_n_infiles
= -1;
4644 set_option_handlers (&handlers
);
4646 for (j
= 1; j
< decoded_options_count
; j
++)
4648 switch (decoded_options
[j
].opt_index
)
4660 for (j
= 1; j
< decoded_options_count
; j
++)
4662 if (decoded_options
[j
].opt_index
== OPT_SPECIAL_input_file
)
4664 const char *arg
= decoded_options
[j
].arg
;
4665 const char *p
= strrchr (arg
, '@');
4669 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4670 arg
= convert_filename (arg
, 0, access (arg
, F_OK
));
4672 /* For LTO static archive support we handle input file
4673 specifications that are composed of a filename and
4674 an offset like FNAME@OFFSET. */
4677 && sscanf (p
, "@%li%n", &offset
, &consumed
) >= 1
4678 && strlen (p
) == (unsigned int)consumed
)
4680 fname
= (char *)xmalloc (p
- arg
+ 1);
4681 memcpy (fname
, arg
, p
- arg
);
4682 fname
[p
- arg
] = '\0';
4683 /* Only accept non-stdin and existing FNAME parts, otherwise
4684 try with the full name. */
4685 if (strcmp (fname
, "-") == 0 || access (fname
, F_OK
) < 0)
4688 fname
= xstrdup (arg
);
4692 fname
= xstrdup (arg
);
4694 if (strcmp (fname
, "-") != 0 && access (fname
, F_OK
) < 0)
4696 bool resp
= fname
[0] == '@' && access (fname
+ 1, F_OK
) < 0;
4697 error ("%s: %m", fname
+ resp
);
4700 add_infile (arg
, spec_lang
);
4706 read_cmdline_option (&global_options
, &global_options_set
,
4707 decoded_options
+ j
, UNKNOWN_LOCATION
,
4708 CL_DRIVER
, &handlers
, global_dc
);
4711 /* If the user didn't specify any, default to all configured offload
4713 if (ENABLE_OFFLOADING
&& offload_targets
== NULL
)
4714 handle_foffload_option (OFFLOAD_TARGETS
);
4717 && strcmp (output_file
, "-") != 0
4718 && strcmp (output_file
, HOST_BIT_BUCKET
) != 0)
4721 for (i
= 0; i
< n_infiles
; i
++)
4722 if ((!infiles
[i
].language
|| infiles
[i
].language
[0] != '*')
4723 && canonical_filename_eq (infiles
[i
].name
, output_file
))
4724 fatal_error (input_location
,
4725 "input file %qs is the same as output file",
4729 if (output_file
!= NULL
&& output_file
[0] == '\0')
4730 fatal_error (input_location
, "output filename may not be empty");
4732 /* -dumpdir and -save-temps=* both specify the location of aux/dump
4733 outputs; the one that appears last prevails. When compiling
4734 multiple sources, an explicit dumpbase (minus -ext) may be
4735 combined with an explicit or implicit dumpdir, whereas when
4736 linking, a specified or implied link output name (minus
4737 extension) may be combined with a prevailing -save-temps=* or an
4738 otherwise implied dumpdir, but not override a prevailing
4739 -dumpdir. Primary outputs (e.g., linker output when linking
4740 without -o, or .i, .s or .o outputs when processing multiple
4741 inputs with -E, -S or -c, respectively) are NOT affected by these
4742 -save-temps=/-dump* options, always landing in the current
4743 directory and with the same basename as the input when an output
4744 name is not given, but when they're intermediate outputs, they
4745 are named like other aux outputs, so the options affect their
4748 Here are some examples. There are several more in the
4749 documentation of -o and -dump*, and some quite exhaustive tests
4750 in gcc.misc-tests/outputs.exp.
4752 When compiling any number of sources, no -dump* nor
4753 -save-temps=*, all outputs in cwd without prefix:
4755 # gcc -c b.c -gsplit-dwarf
4756 -> cc1 [-dumpdir ./] -dumpbase b.c -dumpbase-ext .c # b.o b.dwo
4758 # gcc -c b.c d.c -gsplit-dwarf
4759 -> cc1 [-dumpdir ./] -dumpbase b.c -dumpbase-ext .c # b.o b.dwo
4760 && cc1 [-dumpdir ./] -dumpbase d.c -dumpbase-ext .c # d.o d.dwo
4762 When compiling and linking, no -dump* nor -save-temps=*, .o
4763 outputs are temporary, aux outputs land in the dir of the output,
4764 prefixed with the basename of the linker output:
4766 # gcc b.c d.c -o ab -gsplit-dwarf
4767 -> cc1 -dumpdir ab- -dumpbase b.c -dumpbase-ext .c # ab-b.dwo
4768 && cc1 -dumpdir ab- -dumpbase d.c -dumpbase-ext .c # ab-d.dwo
4771 # gcc b.c d.c [-o a.out] -gsplit-dwarf
4772 -> cc1 -dumpdir a- -dumpbase b.c -dumpbase-ext .c # a-b.dwo
4773 && cc1 -dumpdir a- -dumpbase d.c -dumpbase-ext .c # a-d.dwo
4774 && link ... [-o a.out]
4776 When compiling and linking, a prevailing -dumpdir fully overrides
4777 the prefix of aux outputs given by the output name:
4779 # gcc -dumpdir f b.c d.c -gsplit-dwarf [-o [dir/]whatever]
4780 -> cc1 -dumpdir f -dumpbase b.c -dumpbase-ext .c # fb.dwo
4781 && cc1 -dumpdir f -dumpbase d.c -dumpbase-ext .c # fd.dwo
4782 && link ... [-o whatever]
4784 When compiling multiple inputs, an explicit -dumpbase is combined
4785 with -dumpdir, affecting aux outputs, but not the .o outputs:
4787 # gcc -dumpdir f -dumpbase g- b.c d.c -gsplit-dwarf -c
4788 -> cc1 -dumpdir fg- -dumpbase b.c -dumpbase-ext .c # b.o fg-b.dwo
4789 && cc1 -dumpdir fg- -dumpbase d.c -dumpbase-ext .c # d.o fg-d.dwo
4791 When compiling and linking with -save-temps, the .o outputs that
4792 would have been temporary become aux outputs, so they get
4793 affected by -dump* flags:
4795 # gcc -dumpdir f -dumpbase g- -save-temps b.c d.c
4796 -> cc1 -dumpdir fg- -dumpbase b.c -dumpbase-ext .c # fg-b.o
4797 && cc1 -dumpdir fg- -dumpbase d.c -dumpbase-ext .c # fg-d.o
4800 If -save-temps=* prevails over -dumpdir, however, the explicit
4801 -dumpdir is discarded, as if it wasn't there. The basename of
4802 the implicit linker output, a.out or a.exe, becomes a- as the aux
4803 output prefix for all compilations:
4805 # gcc [-dumpdir f] -save-temps=cwd b.c d.c
4806 -> cc1 -dumpdir a- -dumpbase b.c -dumpbase-ext .c # a-b.o
4807 && cc1 -dumpdir a- -dumpbase d.c -dumpbase-ext .c # a-d.o
4810 A single -dumpbase, applying to multiple inputs, overrides the
4811 linker output name, implied or explicit, as the aux output prefix:
4813 # gcc [-dumpdir f] -dumpbase g- -save-temps=cwd b.c d.c
4814 -> cc1 -dumpdir g- -dumpbase b.c -dumpbase-ext .c # g-b.o
4815 && cc1 -dumpdir g- -dumpbase d.c -dumpbase-ext .c # g-d.o
4818 # gcc [-dumpdir f] -dumpbase g- -save-temps=cwd b.c d.c -o dir/h.out
4819 -> cc1 -dumpdir g- -dumpbase b.c -dumpbase-ext .c # g-b.o
4820 && cc1 -dumpdir g- -dumpbase d.c -dumpbase-ext .c # g-d.o
4821 && link -o dir/h.out
4823 Now, if the linker output is NOT overridden as a prefix, but
4824 -save-temps=* overrides implicit or explicit -dumpdir, the
4825 effective dump dir combines the dir selected by the -save-temps=*
4826 option with the basename of the specified or implied link output:
4828 # gcc [-dumpdir f] -save-temps=cwd b.c d.c -o dir/h.out
4829 -> cc1 -dumpdir h- -dumpbase b.c -dumpbase-ext .c # h-b.o
4830 && cc1 -dumpdir h- -dumpbase d.c -dumpbase-ext .c # h-d.o
4831 && link -o dir/h.out
4833 # gcc [-dumpdir f] -save-temps=obj b.c d.c -o dir/h.out
4834 -> cc1 -dumpdir dir/h- -dumpbase b.c -dumpbase-ext .c # dir/h-b.o
4835 && cc1 -dumpdir dir/h- -dumpbase d.c -dumpbase-ext .c # dir/h-d.o
4836 && link -o dir/h.out
4838 But then again, a single -dumpbase applying to multiple inputs
4839 gets used instead of the linker output basename in the combined
4842 # gcc [-dumpdir f] -dumpbase g- -save-temps=obj b.c d.c -o dir/h.out
4843 -> cc1 -dumpdir dir/g- -dumpbase b.c -dumpbase-ext .c # dir/g-b.o
4844 && cc1 -dumpdir dir/g- -dumpbase d.c -dumpbase-ext .c # dir/g-d.o
4845 && link -o dir/h.out
4847 With a single input being compiled, the output basename does NOT
4848 affect the dumpdir prefix.
4850 # gcc -save-temps=obj b.c -gsplit-dwarf -c -o dir/b.o
4851 -> cc1 -dumpdir dir/ -dumpbase b.c -dumpbase-ext .c # dir/b.o dir/b.dwo
4853 but when compiling and linking even a single file, it does:
4855 # gcc -save-temps=obj b.c -o dir/h.out
4856 -> cc1 -dumpdir dir/h- -dumpbase b.c -dumpbase-ext .c # dir/h-b.o
4858 unless an explicit -dumpdir prevails:
4860 # gcc -save-temps[=obj] -dumpdir g- b.c -o dir/h.out
4861 -> cc1 -dumpdir g- -dumpbase b.c -dumpbase-ext .c # g-b.o
4865 bool explicit_dumpdir
= dumpdir
;
4867 if (!save_temps_overrides_dumpdir
&& explicit_dumpdir
)
4872 /* If -save-temps=obj and -o name, create the prefix to use for %b.
4873 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
4874 else if (save_temps_flag
!= SAVE_TEMPS_CWD
&& output_file
!= NULL
)
4878 temp
= lbasename (output_file
);
4879 if (temp
!= output_file
)
4880 dumpdir
= xstrndup (output_file
,
4881 strlen (output_file
) - strlen (temp
));
4889 if (save_temps_flag
)
4890 save_temps_flag
= SAVE_TEMPS_DUMP
;
4892 /* If there is any pathname component in an explicit -dumpbase, it
4893 overrides dumpdir entirely, so discard it right away. Although
4894 the presence of an explicit -dumpdir matters for the driver, it
4895 shouldn't matter for other processes, that get all that's needed
4896 from the -dumpdir and -dumpbase always passed to them. */
4897 if (dumpdir
&& dumpbase
&& lbasename (dumpbase
) != dumpbase
)
4903 /* Check that dumpbase_ext matches the end of dumpbase, drop it
4905 if (dumpbase_ext
&& dumpbase
&& *dumpbase
)
4907 int lendb
= strlen (dumpbase
);
4908 int lendbx
= strlen (dumpbase_ext
);
4910 /* -dumpbase-ext must be a suffix proper; discard it if it
4911 matches all of -dumpbase, as that would make for an empty
4914 || strcmp (dumpbase
+ lendb
- lendbx
, dumpbase_ext
) != 0)
4916 free (dumpbase_ext
);
4917 dumpbase_ext
= NULL
;
4921 /* -dumpbase with multiple sources goes into dumpdir. With a single
4922 source, it does only if linking and if dumpdir was not explicitly
4924 if (dumpbase
&& *dumpbase
4925 && (single_input_file_index () == -2
4926 || (!have_c
&& !explicit_dumpdir
)))
4931 /* We checked that they match above. */
4932 dumpbase
[strlen (dumpbase
) - strlen (dumpbase_ext
)] = '\0';
4935 prefix
= concat (dumpdir
, dumpbase
, "-", NULL
);
4937 prefix
= concat (dumpbase
, "-", NULL
);
4941 free (dumpbase_ext
);
4942 dumpbase
= dumpbase_ext
= NULL
;
4944 dumpdir_trailing_dash_added
= true;
4947 /* If dumpbase was not brought into dumpdir but we're linking, bring
4948 output_file into dumpdir unless dumpdir was explicitly specified.
4949 The test for !explicit_dumpdir is further below, because we want
4950 to use the obase computation for a ghost outbase, passed to
4951 GCC_COLLECT_OPTIONS. */
4952 else if (!have_c
&& (!explicit_dumpdir
|| (dumpbase
&& !*dumpbase
)))
4954 /* If we get here, we know dumpbase was not specified, or it was
4955 specified as an empty string. If it was anything else, it
4956 would have combined with dumpdir above, because the condition
4957 for dumpbase to be used when present is broader than the
4958 condition that gets us here. */
4959 gcc_assert (!dumpbase
|| !*dumpbase
);
4962 char *tofree
= NULL
;
4963 if (!output_file
|| not_actual_file_p (output_file
))
4967 obase
= lbasename (output_file
);
4968 size_t blen
= strlen (obase
), xlen
;
4969 /* Drop the suffix if it's dumpbase_ext, if given,
4970 otherwise .exe or the target executable suffix, or if the
4971 output was explicitly named a.out, but not otherwise. */
4973 ? (blen
> (xlen
= strlen (dumpbase_ext
))
4974 && strcmp ((temp
= (obase
+ blen
- xlen
)),
4976 : ((temp
= strrchr (obase
+ 1, '.'))
4977 && (xlen
= strlen (temp
))
4978 && (strcmp (temp
, ".exe") == 0
4979 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
4980 || strcmp (temp
, TARGET_EXECUTABLE_SUFFIX
) == 0
4982 || strcmp (obase
, "a.out") == 0)))
4984 tofree
= xstrndup (obase
, blen
- xlen
);
4989 /* We wish to save this basename to the -dumpdir passed through
4990 GCC_COLLECT_OPTIONS within maybe_run_linker, for e.g. LTO,
4991 but we do NOT wish to add it to e.g. %b, so we keep
4992 outbase_length as zero. */
4993 gcc_assert (!outbase
);
4996 /* If we're building [dir1/]foo[.exe] out of a single input
4997 [dir2/]foo.c that shares the same basename, dump to
4998 [dir2/]foo.c.* rather than duplicating the basename into
4999 [dir2/]foo-foo.c.*. */
5002 || ((idxin
= single_input_file_index ()) >= 0
5003 && adds_single_suffix_p (lbasename (infiles
[idxin
].name
),
5006 if (obase
== tofree
)
5010 outbase
= xstrdup (obase
);
5013 obase
= tofree
= NULL
;
5019 char *p
= concat (dumpdir
, obase
, "-", NULL
);
5024 dumpdir
= concat (obase
, "-", NULL
);
5026 dumpdir_trailing_dash_added
= true;
5029 obase
= tofree
= NULL
;
5032 if (!explicit_dumpdir
|| dumpbase
)
5034 /* Absent -dumpbase and present -dumpbase-ext have been applied
5035 to the linker output name, so compute fresh defaults for each
5037 free (dumpbase_ext
);
5038 dumpbase_ext
= NULL
;
5042 /* Now, if we're compiling, or if we haven't used the dumpbase
5043 above, then outbase (%B) is derived from dumpbase, if given, or
5044 from the output name, given or implied. We can't precompute
5045 implied output names, but that's ok, since they're derived from
5046 input names. Just make sure we skip this if dumpbase is the
5047 empty string: we want to use input names then, so don't set
5049 if ((dumpbase
|| have_c
)
5050 && !(dumpbase
&& !*dumpbase
))
5052 gcc_assert (!outbase
);
5056 gcc_assert (single_input_file_index () != -2);
5057 /* We do not want lbasename here; dumpbase with dirnames
5058 overrides dumpdir entirely, even if dumpdir is
5061 /* We've already checked above that the suffix matches. */
5062 outbase
= xstrndup (dumpbase
,
5063 strlen (dumpbase
) - strlen (dumpbase_ext
));
5065 outbase
= xstrdup (dumpbase
);
5067 else if (output_file
&& !not_actual_file_p (output_file
))
5069 outbase
= xstrdup (lbasename (output_file
));
5070 char *p
= strrchr (outbase
+ 1, '.');
5076 outbase_length
= strlen (outbase
);
5079 /* If there is any pathname component in an explicit -dumpbase, do
5080 not use dumpdir, but retain it to pass it on to the compiler. */
5082 dumpdir_length
= strlen (dumpdir
);
5086 /* Check that dumpbase_ext, if still present, still matches the end
5087 of dumpbase, if present, and drop it otherwise. We only retained
5088 it above when dumpbase was absent to maybe use it to drop the
5089 extension from output_name before combining it with dumpdir. We
5090 won't deal with -dumpbase-ext when -dumpbase is not explicitly
5091 given, even if just to activate backward-compatible dumpbase:
5092 dropping it on the floor is correct, expected and documented
5093 behavior. Attempting to deal with a -dumpbase-ext that might
5094 match the end of some input filename, or of the combination of
5095 the output basename with the suffix of the input filename,
5096 possible with an intermediate .gk extension for -fcompare-debug,
5097 is just calling for trouble. */
5100 if (!dumpbase
|| !*dumpbase
)
5102 free (dumpbase_ext
);
5103 dumpbase_ext
= NULL
;
5106 gcc_assert (strcmp (dumpbase
+ strlen (dumpbase
)
5107 - strlen (dumpbase_ext
), dumpbase_ext
) == 0);
5110 if (save_temps_flag
&& use_pipes
)
5112 /* -save-temps overrides -pipe, so that temp files are produced */
5113 if (save_temps_flag
)
5114 warning (0, "%<-pipe%> ignored because %<-save-temps%> specified");
5120 const char *gcd
= env
.get ("GCC_COMPARE_DEBUG");
5122 if (gcd
&& gcd
[0] == '-')
5125 compare_debug_opt
= gcd
;
5127 else if (gcd
&& *gcd
&& strcmp (gcd
, "0"))
5130 compare_debug_opt
= "-gtoggle";
5133 else if (compare_debug
< 0)
5136 gcc_assert (!compare_debug_opt
);
5139 /* Set up the search paths. We add directories that we expect to
5140 contain GNU Toolchain components before directories specified by
5141 the machine description so that we will find GNU components (like
5142 the GNU assembler) before those of the host system. */
5144 /* If we don't know where the toolchain has been installed, use the
5145 configured-in locations. */
5146 if (!gcc_exec_prefix
)
5149 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "GCC",
5150 PREFIX_PRIORITY_LAST
, 1, 0);
5151 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "BINUTILS",
5152 PREFIX_PRIORITY_LAST
, 2, 0);
5153 add_prefix (&exec_prefixes
, standard_exec_prefix
, "BINUTILS",
5154 PREFIX_PRIORITY_LAST
, 2, 0);
5156 add_prefix (&startfile_prefixes
, standard_exec_prefix
, "BINUTILS",
5157 PREFIX_PRIORITY_LAST
, 1, 0);
5160 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix
));
5161 tooldir_prefix2
= concat (tooldir_base_prefix
, spec_machine
,
5162 dir_separator_str
, NULL
);
5164 /* Look for tools relative to the location from which the driver is
5165 running, or, if that is not available, the configured prefix. */
5167 = concat (gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
5168 spec_host_machine
, dir_separator_str
, spec_version
,
5169 accel_dir_suffix
, dir_separator_str
, tooldir_prefix2
, NULL
);
5170 free (tooldir_prefix2
);
5172 add_prefix (&exec_prefixes
,
5173 concat (tooldir_prefix
, "bin", dir_separator_str
, NULL
),
5174 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 0);
5175 add_prefix (&startfile_prefixes
,
5176 concat (tooldir_prefix
, "lib", dir_separator_str
, NULL
),
5177 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 1);
5178 free (tooldir_prefix
);
5180 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
5181 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
5182 then consider it to relocate with the rest of the GCC installation
5183 if GCC_EXEC_PREFIX is set.
5184 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
5185 if (target_system_root
&& !target_system_root_changed
&& gcc_exec_prefix
)
5187 char *tmp_prefix
= get_relative_prefix (decoded_options
[0].arg
,
5188 standard_bindir_prefix
,
5189 target_system_root
);
5190 if (tmp_prefix
&& access_check (tmp_prefix
, F_OK
) == 0)
5192 target_system_root
= tmp_prefix
;
5193 target_system_root_changed
= 1;
5198 /* More prefixes are enabled in main, after we read the specs file
5199 and determine whether this is cross-compilation or not. */
5201 if (n_infiles
!= 0 && n_infiles
== last_language_n_infiles
&& spec_lang
!= 0)
5202 warning (0, "%<-x %s%> after last input file has no effect", spec_lang
);
5204 /* Synthesize -fcompare-debug flag from the GCC_COMPARE_DEBUG
5205 environment variable. */
5206 if (compare_debug
== 2 || compare_debug
== 3)
5208 const char *opt
= concat ("-fcompare-debug=", compare_debug_opt
, NULL
);
5209 save_switch (opt
, 0, NULL
, false, true);
5213 /* Ensure we only invoke each subprocess once. */
5215 && (print_subprocess_help
|| print_help_list
|| print_version
))
5217 /* Create a dummy input file, so that we can pass
5218 the help option on to the various sub-processes. */
5219 add_infile ("help-dummy", "c");
5222 /* Decide if undefined variable references are allowed in specs. */
5224 /* -v alone is safe. --version and --help alone or together are safe. Note
5225 that -v would make them unsafe, as they'd then be run for subprocesses as
5226 well, the location of which might depend on variables possibly coming
5227 from self-specs. Note also that the command name is counted in
5228 decoded_options_count. */
5230 unsigned help_version_count
= 0;
5233 help_version_count
++;
5235 if (print_help_list
)
5236 help_version_count
++;
5238 spec_undefvar_allowed
=
5239 ((verbose_flag
&& decoded_options_count
== 2)
5240 || help_version_count
== decoded_options_count
- 1);
5243 switches
[n_switches
].part1
= 0;
5245 infiles
[n_infiles
].name
= 0;
5248 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
5249 and place that in the environment. */
5252 set_collect_gcc_options (void)
5257 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
5259 obstack_grow (&collect_obstack
, "COLLECT_GCC_OPTIONS=",
5260 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
5263 for (i
= 0; (int) i
< n_switches
; i
++)
5265 const char *const *args
;
5268 obstack_grow (&collect_obstack
, " ", 1);
5272 /* Ignore elided switches. */
5273 if ((switches
[i
].live_cond
5274 & (SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
))
5278 obstack_grow (&collect_obstack
, "'-", 2);
5279 q
= switches
[i
].part1
;
5280 while ((p
= strchr (q
, '\'')))
5282 obstack_grow (&collect_obstack
, q
, p
- q
);
5283 obstack_grow (&collect_obstack
, "'\\''", 4);
5286 obstack_grow (&collect_obstack
, q
, strlen (q
));
5287 obstack_grow (&collect_obstack
, "'", 1);
5289 for (args
= switches
[i
].args
; args
&& *args
; args
++)
5291 obstack_grow (&collect_obstack
, " '", 2);
5293 while ((p
= strchr (q
, '\'')))
5295 obstack_grow (&collect_obstack
, q
, p
- q
);
5296 obstack_grow (&collect_obstack
, "'\\''", 4);
5299 obstack_grow (&collect_obstack
, q
, strlen (q
));
5300 obstack_grow (&collect_obstack
, "'", 1);
5307 obstack_grow (&collect_obstack
, " ", 1);
5310 obstack_grow (&collect_obstack
, "'-dumpdir' '", 12);
5314 while ((p
= strchr (q
, '\'')))
5316 obstack_grow (&collect_obstack
, q
, p
- q
);
5317 obstack_grow (&collect_obstack
, "'\\''", 4);
5320 obstack_grow (&collect_obstack
, q
, strlen (q
));
5322 obstack_grow (&collect_obstack
, "'", 1);
5325 obstack_grow (&collect_obstack
, "\0", 1);
5326 xputenv (XOBFINISH (&collect_obstack
, char *));
5329 /* Process a spec string, accumulating and running commands. */
5331 /* These variables describe the input file name.
5332 input_file_number is the index on outfiles of this file,
5333 so that the output file name can be stored for later use by %o.
5334 input_basename is the start of the part of the input file
5335 sans all directory names, and basename_length is the number
5336 of characters starting there excluding the suffix .c or whatever. */
5338 static const char *gcc_input_filename
;
5339 static int input_file_number
;
5340 size_t input_filename_length
;
5341 static int basename_length
;
5342 static int suffixed_basename_length
;
5343 static const char *input_basename
;
5344 static const char *input_suffix
;
5345 #ifndef HOST_LACKS_INODE_NUMBERS
5346 static struct stat input_stat
;
5348 static int input_stat_set
;
5350 /* The compiler used to process the current input file. */
5351 static struct compiler
*input_file_compiler
;
5353 /* These are variables used within do_spec and do_spec_1. */
5355 /* Nonzero if an arg has been started and not yet terminated
5356 (with space, tab or newline). */
5357 static int arg_going
;
5359 /* Nonzero means %d or %g has been seen; the next arg to be terminated
5360 is a temporary file name. */
5361 static int delete_this_arg
;
5363 /* Nonzero means %w has been seen; the next arg to be terminated
5364 is the output file name of this compilation. */
5365 static int this_is_output_file
;
5367 /* Nonzero means %s has been seen; the next arg to be terminated
5368 is the name of a library file and we should try the standard
5369 search dirs for it. */
5370 static int this_is_library_file
;
5372 /* Nonzero means %T has been seen; the next arg to be terminated
5373 is the name of a linker script and we should try all of the
5374 standard search dirs for it. If it is found insert a --script
5375 command line switch and then substitute the full path in place,
5376 otherwise generate an error message. */
5377 static int this_is_linker_script
;
5379 /* Nonzero means that the input of this command is coming from a pipe. */
5380 static int input_from_pipe
;
5382 /* Nonnull means substitute this for any suffix when outputting a switches
5384 static const char *suffix_subst
;
5386 /* If there is an argument being accumulated, terminate it and store it. */
5389 end_going_arg (void)
5395 obstack_1grow (&obstack
, 0);
5396 string
= XOBFINISH (&obstack
, const char *);
5397 if (this_is_library_file
)
5398 string
= find_file (string
);
5399 if (this_is_linker_script
)
5401 char * full_script_path
= find_a_file (&startfile_prefixes
, string
, R_OK
, true);
5403 if (full_script_path
== NULL
)
5405 error ("unable to locate default linker script %qs in the library search paths", string
);
5406 /* Script was not found on search path. */
5409 store_arg ("--script", false, false);
5410 string
= full_script_path
;
5412 store_arg (string
, delete_this_arg
, this_is_output_file
);
5413 if (this_is_output_file
)
5414 outfiles
[input_file_number
] = string
;
5420 /* Parse the WRAPPER string which is a comma separated list of the command line
5421 and insert them into the beginning of argbuf. */
5424 insert_wrapper (const char *wrapper
)
5428 char *buf
= xstrdup (wrapper
);
5430 unsigned int old_length
= argbuf
.length ();
5438 while ((p
= strchr (p
, ',')) != NULL
);
5440 argbuf
.safe_grow (old_length
+ n
);
5441 memmove (argbuf
.address () + n
,
5443 old_length
* sizeof (const_char_p
));
5457 while ((p
= strchr (p
, ',')) != NULL
);
5458 gcc_assert (i
== n
);
5461 /* Process the spec SPEC and run the commands specified therein.
5462 Returns 0 if the spec is successfully processed; -1 if failed. */
5465 do_spec (const char *spec
)
5469 value
= do_spec_2 (spec
, NULL
);
5471 /* Force out any unfinished command.
5472 If -pipe, this forces out the last command if it ended in `|'. */
5475 if (argbuf
.length () > 0
5476 && !strcmp (argbuf
.last (), "|"))
5479 set_collect_gcc_options ();
5481 if (argbuf
.length () > 0)
5488 /* Process the spec SPEC, with SOFT_MATCHED_PART designating the current value
5489 of a matched * pattern which may be re-injected by way of %*. */
5492 do_spec_2 (const char *spec
, const char *soft_matched_part
)
5498 delete_this_arg
= 0;
5499 this_is_output_file
= 0;
5500 this_is_library_file
= 0;
5501 this_is_linker_script
= 0;
5502 input_from_pipe
= 0;
5503 suffix_subst
= NULL
;
5505 result
= do_spec_1 (spec
, 0, soft_matched_part
);
5512 /* Process the given spec string and add any new options to the end
5513 of the switches/n_switches array. */
5516 do_option_spec (const char *name
, const char *spec
)
5518 unsigned int i
, value_count
, value_len
;
5519 const char *p
, *q
, *value
;
5520 char *tmp_spec
, *tmp_spec_p
;
5522 if (configure_default_options
[0].name
== NULL
)
5525 for (i
= 0; i
< ARRAY_SIZE (configure_default_options
); i
++)
5526 if (strcmp (configure_default_options
[i
].name
, name
) == 0)
5528 if (i
== ARRAY_SIZE (configure_default_options
))
5531 value
= configure_default_options
[i
].value
;
5532 value_len
= strlen (value
);
5534 /* Compute the size of the final spec. */
5537 while ((p
= strstr (p
, "%(VALUE)")) != NULL
)
5543 /* Replace each %(VALUE) by the specified value. */
5544 tmp_spec
= (char *) alloca (strlen (spec
) + 1
5545 + value_count
* (value_len
- strlen ("%(VALUE)")));
5546 tmp_spec_p
= tmp_spec
;
5548 while ((p
= strstr (q
, "%(VALUE)")) != NULL
)
5550 memcpy (tmp_spec_p
, q
, p
- q
);
5551 tmp_spec_p
= tmp_spec_p
+ (p
- q
);
5552 memcpy (tmp_spec_p
, value
, value_len
);
5553 tmp_spec_p
+= value_len
;
5554 q
= p
+ strlen ("%(VALUE)");
5556 strcpy (tmp_spec_p
, q
);
5558 do_self_spec (tmp_spec
);
5561 /* Process the given spec string and add any new options to the end
5562 of the switches/n_switches array. */
5565 do_self_spec (const char *spec
)
5569 do_spec_2 (spec
, NULL
);
5570 do_spec_1 (" ", 0, NULL
);
5572 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
5573 do_self_specs adds the replacements to switches array, so it shouldn't
5574 be processed afterwards. */
5575 for (i
= 0; i
< n_switches
; i
++)
5576 if ((switches
[i
].live_cond
& SWITCH_IGNORE
))
5577 switches
[i
].live_cond
|= SWITCH_IGNORE_PERMANENTLY
;
5579 if (argbuf
.length () > 0)
5581 const char **argbuf_copy
;
5582 struct cl_decoded_option
*decoded_options
;
5583 struct cl_option_handlers handlers
;
5584 unsigned int decoded_options_count
;
5587 /* Create a copy of argbuf with a dummy argv[0] entry for
5588 decode_cmdline_options_to_array. */
5589 argbuf_copy
= XNEWVEC (const char *,
5590 argbuf
.length () + 1);
5591 argbuf_copy
[0] = "";
5592 memcpy (argbuf_copy
+ 1, argbuf
.address (),
5593 argbuf
.length () * sizeof (const char *));
5595 decode_cmdline_options_to_array (argbuf
.length () + 1,
5597 CL_DRIVER
, &decoded_options
,
5598 &decoded_options_count
);
5601 set_option_handlers (&handlers
);
5603 for (j
= 1; j
< decoded_options_count
; j
++)
5605 switch (decoded_options
[j
].opt_index
)
5607 case OPT_SPECIAL_input_file
:
5608 /* Specs should only generate options, not input
5610 if (strcmp (decoded_options
[j
].arg
, "-") != 0)
5611 fatal_error (input_location
,
5612 "switch %qs does not start with %<-%>",
5613 decoded_options
[j
].arg
);
5615 fatal_error (input_location
,
5616 "spec-generated switch is just %<-%>");
5619 case OPT_fcompare_debug_second
:
5620 case OPT_fcompare_debug
:
5621 case OPT_fcompare_debug_
:
5623 /* Avoid duplicate processing of some options from
5624 compare-debug specs; just save them here. */
5625 save_switch (decoded_options
[j
].canonical_option
[0],
5626 (decoded_options
[j
].canonical_option_num_elements
5628 &decoded_options
[j
].canonical_option
[1], false, true);
5632 read_cmdline_option (&global_options
, &global_options_set
,
5633 decoded_options
+ j
, UNKNOWN_LOCATION
,
5634 CL_DRIVER
, &handlers
, global_dc
);
5639 free (decoded_options
);
5642 switches
[n_switches
].part1
= 0;
5646 /* Callback for processing %D and %I specs. */
5648 struct spec_path_info
{
5653 bool separate_options
;
5657 spec_path (char *path
, void *data
)
5659 struct spec_path_info
*info
= (struct spec_path_info
*) data
;
5663 if (info
->omit_relative
&& !IS_ABSOLUTE_PATH (path
))
5666 if (info
->append_len
!= 0)
5668 len
= strlen (path
);
5669 memcpy (path
+ len
, info
->append
, info
->append_len
+ 1);
5672 if (!is_directory (path
, true))
5675 do_spec_1 (info
->option
, 1, NULL
);
5676 if (info
->separate_options
)
5677 do_spec_1 (" ", 0, NULL
);
5679 if (info
->append_len
== 0)
5681 len
= strlen (path
);
5682 save
= path
[len
- 1];
5683 if (IS_DIR_SEPARATOR (path
[len
- 1]))
5684 path
[len
- 1] = '\0';
5687 do_spec_1 (path
, 1, NULL
);
5688 do_spec_1 (" ", 0, NULL
);
5690 /* Must not damage the original path. */
5691 if (info
->append_len
== 0)
5692 path
[len
- 1] = save
;
5697 /* True if we should compile INFILE. */
5700 compile_input_file_p (struct infile
*infile
)
5702 if ((!infile
->language
) || (infile
->language
[0] != '*'))
5703 if (infile
->incompiler
== input_file_compiler
)
5708 /* Process each member of VEC as a spec. */
5711 do_specs_vec (vec
<char_p
> vec
)
5716 FOR_EACH_VEC_ELT (vec
, ix
, opt
)
5718 do_spec_1 (opt
, 1, NULL
);
5719 /* Make each accumulated option a separate argument. */
5720 do_spec_1 (" ", 0, NULL
);
5724 /* Add options passed via -Xassembler or -Wa to COLLECT_AS_OPTIONS. */
5727 putenv_COLLECT_AS_OPTIONS (vec
<char_p
> vec
)
5729 if (vec
.is_empty ())
5732 obstack_init (&collect_obstack
);
5733 obstack_grow (&collect_obstack
, "COLLECT_AS_OPTIONS=",
5734 strlen ("COLLECT_AS_OPTIONS="));
5739 FOR_EACH_VEC_ELT (vec
, ix
, opt
)
5741 obstack_1grow (&collect_obstack
, '\'');
5742 obstack_grow (&collect_obstack
, opt
, strlen (opt
));
5743 obstack_1grow (&collect_obstack
, '\'');
5744 if (ix
< vec
.length () - 1)
5745 obstack_1grow(&collect_obstack
, ' ');
5748 obstack_1grow (&collect_obstack
, '\0');
5749 xputenv (XOBFINISH (&collect_obstack
, char *));
5752 /* Process the sub-spec SPEC as a portion of a larger spec.
5753 This is like processing a whole spec except that we do
5754 not initialize at the beginning and we do not supply a
5755 newline by default at the end.
5756 INSWITCH nonzero means don't process %-sequences in SPEC;
5757 in this case, % is treated as an ordinary character.
5758 This is used while substituting switches.
5759 INSWITCH nonzero also causes SPC not to terminate an argument.
5761 Value is zero unless a line was finished
5762 and the command on that line reported an error. */
5765 do_spec_1 (const char *spec
, int inswitch
, const char *soft_matched_part
)
5767 const char *p
= spec
;
5772 /* If it's an empty string argument to a switch, keep it as is. */
5773 if (inswitch
&& !*p
)
5777 /* If substituting a switch, treat all chars like letters.
5778 Otherwise, NL, SPC, TAB and % are special. */
5779 switch (inswitch
? 'a' : c
)
5784 if (argbuf
.length () > 0
5785 && !strcmp (argbuf
.last (), "|"))
5787 /* A `|' before the newline means use a pipe here,
5788 but only if -pipe was specified.
5789 Otherwise, execute now and don't pass the `|' as an arg. */
5792 input_from_pipe
= 1;
5799 set_collect_gcc_options ();
5801 if (argbuf
.length () > 0)
5807 /* Reinitialize for a new command, and for a new argument. */
5810 delete_this_arg
= 0;
5811 this_is_output_file
= 0;
5812 this_is_library_file
= 0;
5813 this_is_linker_script
= 0;
5814 input_from_pipe
= 0;
5821 obstack_1grow (&obstack
, c
);
5829 /* Reinitialize for a new argument. */
5830 delete_this_arg
= 0;
5831 this_is_output_file
= 0;
5832 this_is_library_file
= 0;
5833 this_is_linker_script
= 0;
5840 fatal_error (input_location
, "spec %qs invalid", spec
);
5843 /* Don't use %b in the linker command. */
5844 gcc_assert (suffixed_basename_length
);
5845 if (!this_is_output_file
&& dumpdir_length
)
5846 obstack_grow (&obstack
, dumpdir
, dumpdir_length
);
5847 if (this_is_output_file
|| !outbase_length
)
5848 obstack_grow (&obstack
, input_basename
, basename_length
);
5850 obstack_grow (&obstack
, outbase
, outbase_length
);
5851 if (compare_debug
< 0)
5852 obstack_grow (&obstack
, ".gk", 3);
5857 /* Don't use %B in the linker command. */
5858 gcc_assert (suffixed_basename_length
);
5859 if (!this_is_output_file
&& dumpdir_length
)
5860 obstack_grow (&obstack
, dumpdir
, dumpdir_length
);
5861 if (this_is_output_file
|| !outbase_length
)
5862 obstack_grow (&obstack
, input_basename
, basename_length
);
5864 obstack_grow (&obstack
, outbase
, outbase_length
);
5865 if (compare_debug
< 0)
5866 obstack_grow (&obstack
, ".gk", 3);
5867 obstack_grow (&obstack
, input_basename
+ basename_length
,
5868 suffixed_basename_length
- basename_length
);
5874 delete_this_arg
= 2;
5877 /* Dump out the directories specified with LIBRARY_PATH,
5878 followed by the absolute directories
5879 that we search for startfiles. */
5882 struct spec_path_info info
;
5885 info
.append_len
= 0;
5886 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
5887 /* Used on systems which record the specified -L dirs
5888 and use them to search for dynamic linking.
5889 Relative directories always come from -B,
5890 and it is better not to use them for searching
5891 at run time. In particular, stage1 loses. */
5892 info
.omit_relative
= true;
5894 info
.omit_relative
= false;
5896 info
.separate_options
= false;
5898 for_each_path (&startfile_prefixes
, true, 0, spec_path
, &info
);
5903 /* %efoo means report an error with `foo' as error message
5904 and don't execute any more commands for this file. */
5908 while (*p
!= 0 && *p
!= '\n')
5910 buf
= (char *) alloca (p
- q
+ 1);
5911 strncpy (buf
, q
, p
- q
);
5913 error ("%s", _(buf
));
5918 /* %nfoo means report a notice with `foo' on stderr. */
5922 while (*p
!= 0 && *p
!= '\n')
5924 buf
= (char *) alloca (p
- q
+ 1);
5925 strncpy (buf
, q
, p
- q
);
5927 inform (UNKNOWN_LOCATION
, "%s", _(buf
));
5937 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
5938 defined, and it is not a directory, and it is
5939 writable, use it. Otherwise, treat this like any
5940 other temporary file. */
5942 if ((!save_temps_flag
)
5943 && (stat (HOST_BIT_BUCKET
, &st
) == 0) && (!S_ISDIR (st
.st_mode
))
5944 && (access (HOST_BIT_BUCKET
, W_OK
) == 0))
5946 obstack_grow (&obstack
, HOST_BIT_BUCKET
,
5947 strlen (HOST_BIT_BUCKET
));
5948 delete_this_arg
= 0;
5953 goto create_temp_file
;
5957 obstack_1grow (&obstack
, '-');
5958 delete_this_arg
= 0;
5961 /* consume suffix */
5962 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
5964 if (p
[0] == '%' && p
[1] == 'O')
5969 goto create_temp_file
;
5973 /* consume suffix */
5974 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
5976 if (p
[0] == '%' && p
[1] == 'O')
5981 goto create_temp_file
;
5987 struct temp_name
*t
;
5989 const char *suffix
= p
;
5990 char *saved_suffix
= NULL
;
5992 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
5994 suffix_length
= p
- suffix
;
5995 if (p
[0] == '%' && p
[1] == 'O')
5998 /* We don't support extra suffix characters after %O. */
5999 if (*p
== '.' || ISALNUM ((unsigned char) *p
))
6000 fatal_error (input_location
,
6001 "spec %qs has invalid %<%%0%c%>", spec
, *p
);
6002 if (suffix_length
== 0)
6003 suffix
= TARGET_OBJECT_SUFFIX
;
6007 = XNEWVEC (char, suffix_length
6008 + strlen (TARGET_OBJECT_SUFFIX
) + 1);
6009 strncpy (saved_suffix
, suffix
, suffix_length
);
6010 strcpy (saved_suffix
+ suffix_length
,
6011 TARGET_OBJECT_SUFFIX
);
6013 suffix_length
+= strlen (TARGET_OBJECT_SUFFIX
);
6016 if (compare_debug
< 0)
6018 suffix
= concat (".gk", suffix
, NULL
);
6022 /* If -save-temps was specified, use that for the
6024 if (save_temps_flag
)
6027 bool adjusted_suffix
= false;
6029 && !outbase_length
&& !basename_length
6030 && !dumpdir_trailing_dash_added
)
6032 adjusted_suffix
= true;
6036 temp_filename_length
6037 = dumpdir_length
+ suffix_length
+ 1;
6039 temp_filename_length
+= outbase_length
;
6041 temp_filename_length
+= basename_length
;
6042 tmp
= (char *) alloca (temp_filename_length
);
6044 memcpy (tmp
, dumpdir
, dumpdir_length
);
6046 memcpy (tmp
+ dumpdir_length
, outbase
,
6048 else if (basename_length
)
6049 memcpy (tmp
+ dumpdir_length
, input_basename
,
6051 memcpy (tmp
+ temp_filename_length
- suffix_length
- 1,
6052 suffix
, suffix_length
);
6053 if (adjusted_suffix
)
6055 adjusted_suffix
= false;
6059 tmp
[temp_filename_length
- 1] = '\0';
6060 temp_filename
= tmp
;
6062 if (filename_cmp (temp_filename
, gcc_input_filename
) != 0)
6064 #ifndef HOST_LACKS_INODE_NUMBERS
6065 struct stat st_temp
;
6067 /* Note, set_input() resets input_stat_set to 0. */
6068 if (input_stat_set
== 0)
6070 input_stat_set
= stat (gcc_input_filename
,
6072 if (input_stat_set
>= 0)
6076 /* If we have the stat for the gcc_input_filename
6077 and we can do the stat for the temp_filename
6078 then the they could still refer to the same
6079 file if st_dev/st_ino's are the same. */
6080 if (input_stat_set
!= 1
6081 || stat (temp_filename
, &st_temp
) < 0
6082 || input_stat
.st_dev
!= st_temp
.st_dev
6083 || input_stat
.st_ino
!= st_temp
.st_ino
)
6085 /* Just compare canonical pathnames. */
6086 char* input_realname
= lrealpath (gcc_input_filename
);
6087 char* temp_realname
= lrealpath (temp_filename
);
6088 bool files_differ
= filename_cmp (input_realname
, temp_realname
);
6089 free (input_realname
);
6090 free (temp_realname
);
6095 = save_string (temp_filename
,
6096 temp_filename_length
- 1);
6097 obstack_grow (&obstack
, temp_filename
,
6098 temp_filename_length
);
6100 delete_this_arg
= 0;
6106 /* See if we already have an association of %g/%u/%U and
6108 for (t
= temp_names
; t
; t
= t
->next
)
6109 if (t
->length
== suffix_length
6110 && strncmp (t
->suffix
, suffix
, suffix_length
) == 0
6111 && t
->unique
== (c
== 'u' || c
== 'U' || c
== 'j'))
6114 /* Make a new association if needed. %u and %j
6116 if (t
== 0 || c
== 'u' || c
== 'j')
6120 t
= XNEW (struct temp_name
);
6121 t
->next
= temp_names
;
6124 t
->length
= suffix_length
;
6127 t
->suffix
= saved_suffix
;
6128 saved_suffix
= NULL
;
6131 t
->suffix
= save_string (suffix
, suffix_length
);
6132 t
->unique
= (c
== 'u' || c
== 'U' || c
== 'j');
6133 temp_filename
= make_temp_file (t
->suffix
);
6134 temp_filename_length
= strlen (temp_filename
);
6135 t
->filename
= temp_filename
;
6136 t
->filename_length
= temp_filename_length
;
6139 free (saved_suffix
);
6141 obstack_grow (&obstack
, t
->filename
, t
->filename_length
);
6142 delete_this_arg
= 1;
6150 /* We are going to expand `%i' into `@FILE', where FILE
6151 is a newly-created temporary filename. The filenames
6152 that would usually be expanded in place of %o will be
6153 written to the temporary file. */
6154 if (at_file_supplied
)
6157 for (i
= 0; (int) i
< n_infiles
; i
++)
6158 if (compile_input_file_p (&infiles
[i
]))
6160 store_arg (infiles
[i
].name
, 0, 0);
6161 infiles
[i
].compiled
= true;
6164 if (at_file_supplied
)
6169 obstack_grow (&obstack
, gcc_input_filename
,
6170 input_filename_length
);
6177 struct spec_path_info info
;
6181 do_spec_1 ("-imultilib", 1, NULL
);
6182 /* Make this a separate argument. */
6183 do_spec_1 (" ", 0, NULL
);
6184 do_spec_1 (multilib_dir
, 1, NULL
);
6185 do_spec_1 (" ", 0, NULL
);
6190 do_spec_1 ("-imultiarch", 1, NULL
);
6191 /* Make this a separate argument. */
6192 do_spec_1 (" ", 0, NULL
);
6193 do_spec_1 (multiarch_dir
, 1, NULL
);
6194 do_spec_1 (" ", 0, NULL
);
6197 if (gcc_exec_prefix
)
6199 do_spec_1 ("-iprefix", 1, NULL
);
6200 /* Make this a separate argument. */
6201 do_spec_1 (" ", 0, NULL
);
6202 do_spec_1 (gcc_exec_prefix
, 1, NULL
);
6203 do_spec_1 (" ", 0, NULL
);
6206 if (target_system_root_changed
||
6207 (target_system_root
&& target_sysroot_hdrs_suffix
))
6209 do_spec_1 ("-isysroot", 1, NULL
);
6210 /* Make this a separate argument. */
6211 do_spec_1 (" ", 0, NULL
);
6212 do_spec_1 (target_system_root
, 1, NULL
);
6213 if (target_sysroot_hdrs_suffix
)
6214 do_spec_1 (target_sysroot_hdrs_suffix
, 1, NULL
);
6215 do_spec_1 (" ", 0, NULL
);
6218 info
.option
= "-isystem";
6219 info
.append
= "include";
6220 info
.append_len
= strlen (info
.append
);
6221 info
.omit_relative
= false;
6222 info
.separate_options
= true;
6224 for_each_path (&include_prefixes
, false, info
.append_len
,
6227 info
.append
= "include-fixed";
6228 if (*sysroot_hdrs_suffix_spec
)
6229 info
.append
= concat (info
.append
, dir_separator_str
,
6230 multilib_dir
, NULL
);
6231 info
.append_len
= strlen (info
.append
);
6232 for_each_path (&include_prefixes
, false, info
.append_len
,
6238 /* We are going to expand `%o' into `@FILE', where FILE
6239 is a newly-created temporary filename. The filenames
6240 that would usually be expanded in place of %o will be
6241 written to the temporary file. */
6242 if (at_file_supplied
)
6245 for (i
= 0; i
< n_infiles
+ lang_specific_extra_outfiles
; i
++)
6247 store_arg (outfiles
[i
], 0, 0);
6249 if (at_file_supplied
)
6254 obstack_grow (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
6259 this_is_library_file
= 1;
6263 this_is_linker_script
= 1;
6267 outfiles
[input_file_number
] = NULL
;
6271 this_is_output_file
= 1;
6276 unsigned int cur_index
= argbuf
.length ();
6277 /* Handle the {...} following the %W. */
6279 fatal_error (input_location
,
6280 "spec %qs has invalid %<%%W%c%>", spec
, *p
);
6281 p
= handle_braces (p
+ 1);
6285 /* If any args were output, mark the last one for deletion
6287 if (argbuf
.length () != cur_index
)
6288 record_temp_file (argbuf
.last (), 0, 1);
6293 /* Handle the {...} following the %@. */
6295 fatal_error (input_location
,
6296 "spec %qs has invalid %<%%@%c%>", spec
, *p
);
6297 if (at_file_supplied
)
6299 p
= handle_braces (p
+ 1);
6300 if (at_file_supplied
)
6306 /* %x{OPTION} records OPTION for %X to output. */
6314 /* Skip past the option value and make a copy. */
6316 fatal_error (input_location
,
6317 "spec %qs has invalid %<%%x%c%>", spec
, *p
);
6320 string
= save_string (p1
+ 1, p
- p1
- 2);
6322 /* See if we already recorded this option. */
6323 FOR_EACH_VEC_ELT (linker_options
, ix
, opt
)
6324 if (! strcmp (string
, opt
))
6330 /* This option is new; add it. */
6331 add_linker_option (string
, strlen (string
));
6336 /* Dump out the options accumulated previously using %x. */
6338 do_specs_vec (linker_options
);
6341 /* Dump out the options accumulated previously using -Wa,. */
6343 do_specs_vec (assembler_options
);
6346 /* Dump out the options accumulated previously using -Wp,. */
6348 do_specs_vec (preprocessor_options
);
6351 /* Here are digits and numbers that just process
6352 a certain constant string as a spec. */
6355 value
= do_spec_1 (cc1_spec
, 0, NULL
);
6361 value
= do_spec_1 (cc1plus_spec
, 0, NULL
);
6367 value
= do_spec_1 (asm_spec
, 0, NULL
);
6373 value
= do_spec_1 (asm_final_spec
, 0, NULL
);
6380 const char *const spec
6381 = (input_file_compiler
->cpp_spec
6382 ? input_file_compiler
->cpp_spec
6384 value
= do_spec_1 (spec
, 0, NULL
);
6391 value
= do_spec_1 (endfile_spec
, 0, NULL
);
6397 value
= do_spec_1 (link_spec
, 0, NULL
);
6403 value
= do_spec_1 (lib_spec
, 0, NULL
);
6409 if (multilib_os_dir
== NULL
)
6410 obstack_1grow (&obstack
, '.');
6412 obstack_grow (&obstack
, multilib_os_dir
,
6413 strlen (multilib_os_dir
));
6417 value
= do_spec_1 (libgcc_spec
, 0, NULL
);
6423 /* We assume there is a directory
6424 separator at the end of this string. */
6425 if (target_system_root
)
6427 obstack_grow (&obstack
, target_system_root
,
6428 strlen (target_system_root
));
6429 if (target_sysroot_suffix
)
6430 obstack_grow (&obstack
, target_sysroot_suffix
,
6431 strlen (target_sysroot_suffix
));
6436 value
= do_spec_1 (startfile_spec
, 0, NULL
);
6441 /* Here we define characters other than letters and digits. */
6444 p
= handle_braces (p
);
6450 p
= handle_spec_function (p
, NULL
, soft_matched_part
);
6456 obstack_1grow (&obstack
, '%');
6463 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '%')
6465 suffix_subst
= save_string (p
- 1, len
+ 1);
6470 /* Henceforth ignore the option(s) matching the pattern
6476 int have_wildcard
= 0;
6481 switch_option
= SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
;
6483 switch_option
= SWITCH_IGNORE
;
6485 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '\t')
6488 if (p
[len
-1] == '*')
6491 for (i
= 0; i
< n_switches
; i
++)
6492 if (!strncmp (switches
[i
].part1
, p
, len
- have_wildcard
)
6493 && (have_wildcard
|| switches
[i
].part1
[len
] == '\0'))
6495 switches
[i
].live_cond
|= switch_option
;
6496 /* User switch be validated from validate_all_switches.
6497 when the definition is seen from the spec file.
6498 If not defined anywhere, will be rejected. */
6499 if (switches
[i
].known
)
6500 switches
[i
].validated
= true;
6508 if (soft_matched_part
)
6510 if (soft_matched_part
[0])
6511 do_spec_1 (soft_matched_part
, 1, NULL
);
6512 /* Only insert a space after the substitution if it is at the
6513 end of the current sequence. So if:
6515 "%{foo=*:bar%*}%{foo=*:one%*two}"
6517 matches -foo=hello then it will produce:
6519 barhello onehellotwo
6521 if (*p
== 0 || *p
== '}')
6522 do_spec_1 (" ", 0, NULL
);
6525 /* Catch the case where a spec string contains something like
6526 '%{foo:%*}'. i.e. there is no * in the pattern on the left
6527 hand side of the :. */
6528 error ("spec failure: %<%%*%> has not been initialized by pattern match");
6531 /* Process a string found as the value of a spec given by name.
6532 This feature allows individual machine descriptions
6533 to add and use their own specs. */
6536 const char *name
= p
;
6537 struct spec_list
*sl
;
6540 /* The string after the S/P is the name of a spec that is to be
6542 while (*p
&& *p
!= ')')
6545 /* See if it's in the list. */
6546 for (len
= p
- name
, sl
= specs
; sl
; sl
= sl
->next
)
6547 if (sl
->name_len
== len
&& !strncmp (sl
->name
, name
, len
))
6549 name
= *(sl
->ptr_spec
);
6551 fnotice (stderr
, "Processing spec (%s), which is '%s'\n",
6559 value
= do_spec_1 (name
, 0, NULL
);
6564 /* Discard the closing paren. */
6571 /* End a previous argument, if there is one, then issue an
6579 error ("spec failure: unrecognized spec option %qc", c
);
6585 /* Backslash: treat next character as ordinary. */
6588 /* When adding more cases that previously matched default, make
6589 sure to adjust quote_spec_char_p as well. */
6593 /* Ordinary character: put it into the current argument. */
6594 obstack_1grow (&obstack
, c
);
6598 /* End of string. If we are processing a spec function, we need to
6599 end any pending argument. */
6600 if (processing_spec_function
)
6606 /* Look up a spec function. */
6608 static const struct spec_function
*
6609 lookup_spec_function (const char *name
)
6611 const struct spec_function
*sf
;
6613 for (sf
= static_spec_functions
; sf
->name
!= NULL
; sf
++)
6614 if (strcmp (sf
->name
, name
) == 0)
6620 /* Evaluate a spec function. */
6623 eval_spec_function (const char *func
, const char *args
,
6624 const char *soft_matched_part
)
6626 const struct spec_function
*sf
;
6627 const char *funcval
;
6629 /* Saved spec processing context. */
6630 vec
<const_char_p
> save_argbuf
;
6633 int save_delete_this_arg
;
6634 int save_this_is_output_file
;
6635 int save_this_is_library_file
;
6636 int save_input_from_pipe
;
6637 int save_this_is_linker_script
;
6638 const char *save_suffix_subst
;
6640 int save_growing_size
;
6641 void *save_growing_value
= NULL
;
6643 sf
= lookup_spec_function (func
);
6645 fatal_error (input_location
, "unknown spec function %qs", func
);
6647 /* Push the spec processing context. */
6648 save_argbuf
= argbuf
;
6650 save_arg_going
= arg_going
;
6651 save_delete_this_arg
= delete_this_arg
;
6652 save_this_is_output_file
= this_is_output_file
;
6653 save_this_is_library_file
= this_is_library_file
;
6654 save_this_is_linker_script
= this_is_linker_script
;
6655 save_input_from_pipe
= input_from_pipe
;
6656 save_suffix_subst
= suffix_subst
;
6658 /* If we have some object growing now, finalize it so the args and function
6659 eval proceed from a cleared context. This is needed to prevent the first
6660 constructed arg from mistakenly including the growing value. We'll push
6661 this value back on the obstack once the function evaluation is done, to
6662 restore a consistent processing context for our caller. This is fine as
6663 the address of growing objects isn't guaranteed to remain stable until
6664 they are finalized, and we expect this situation to be rare enough for
6665 the extra copy not to be an issue. */
6666 save_growing_size
= obstack_object_size (&obstack
);
6667 if (save_growing_size
> 0)
6668 save_growing_value
= obstack_finish (&obstack
);
6670 /* Create a new spec processing context, and build the function
6674 if (do_spec_2 (args
, soft_matched_part
) < 0)
6675 fatal_error (input_location
, "error in arguments to spec function %qs",
6678 /* argbuf_index is an index for the next argument to be inserted, and
6679 so contains the count of the args already inserted. */
6681 funcval
= (*sf
->func
) (argbuf
.length (),
6684 /* Pop the spec processing context. */
6686 argbuf
= save_argbuf
;
6688 arg_going
= save_arg_going
;
6689 delete_this_arg
= save_delete_this_arg
;
6690 this_is_output_file
= save_this_is_output_file
;
6691 this_is_library_file
= save_this_is_library_file
;
6692 this_is_linker_script
= save_this_is_linker_script
;
6693 input_from_pipe
= save_input_from_pipe
;
6694 suffix_subst
= save_suffix_subst
;
6696 if (save_growing_size
> 0)
6697 obstack_grow (&obstack
, save_growing_value
, save_growing_size
);
6702 /* Handle a spec function call of the form:
6706 ARGS is processed as a spec in a separate context and split into an
6707 argument vector in the normal fashion. The function returns a string
6708 containing a spec which we then process in the caller's context, or
6709 NULL if no processing is required.
6711 If RETVAL_NONNULL is not NULL, then store a bool whether function
6714 SOFT_MATCHED_PART holds the current value of a matched * pattern, which
6715 may be re-expanded with a %* as part of the function arguments. */
6718 handle_spec_function (const char *p
, bool *retval_nonnull
,
6719 const char *soft_matched_part
)
6722 const char *endp
, *funcval
;
6725 processing_spec_function
++;
6727 /* Get the function name. */
6728 for (endp
= p
; *endp
!= '\0'; endp
++)
6730 if (*endp
== '(') /* ) */
6732 /* Only allow [A-Za-z0-9], -, and _ in function names. */
6733 if (!ISALNUM (*endp
) && !(*endp
== '-' || *endp
== '_'))
6734 fatal_error (input_location
, "malformed spec function name");
6736 if (*endp
!= '(') /* ) */
6737 fatal_error (input_location
, "no arguments for spec function");
6738 func
= save_string (p
, endp
- p
);
6741 /* Get the arguments. */
6742 for (count
= 0; *endp
!= '\0'; endp
++)
6751 else if (*endp
== '(') /* ) */
6756 fatal_error (input_location
, "malformed spec function arguments");
6757 args
= save_string (p
, endp
- p
);
6760 /* p now points to just past the end of the spec function expression. */
6762 funcval
= eval_spec_function (func
, args
, soft_matched_part
);
6763 if (funcval
!= NULL
&& do_spec_1 (funcval
, 0, NULL
) < 0)
6766 *retval_nonnull
= funcval
!= NULL
;
6771 processing_spec_function
--;
6776 /* Inline subroutine of handle_braces. Returns true if the current
6777 input suffix matches the atom bracketed by ATOM and END_ATOM. */
6779 input_suffix_matches (const char *atom
, const char *end_atom
)
6781 return (input_suffix
6782 && !strncmp (input_suffix
, atom
, end_atom
- atom
)
6783 && input_suffix
[end_atom
- atom
] == '\0');
6786 /* Subroutine of handle_braces. Returns true if the current
6787 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
6789 input_spec_matches (const char *atom
, const char *end_atom
)
6791 return (input_file_compiler
6792 && input_file_compiler
->suffix
6793 && input_file_compiler
->suffix
[0] != '\0'
6794 && !strncmp (input_file_compiler
->suffix
+ 1, atom
,
6796 && input_file_compiler
->suffix
[end_atom
- atom
+ 1] == '\0');
6799 /* Subroutine of handle_braces. Returns true if a switch
6800 matching the atom bracketed by ATOM and END_ATOM appeared on the
6803 switch_matches (const char *atom
, const char *end_atom
, int starred
)
6806 int len
= end_atom
- atom
;
6807 int plen
= starred
? len
: -1;
6809 for (i
= 0; i
< n_switches
; i
++)
6810 if (!strncmp (switches
[i
].part1
, atom
, len
)
6811 && (starred
|| switches
[i
].part1
[len
] == '\0')
6812 && check_live_switch (i
, plen
))
6815 /* Check if a switch with separated form matching the atom.
6816 We check -D and -U switches. */
6817 else if (switches
[i
].args
!= 0)
6819 if ((*switches
[i
].part1
== 'D' || *switches
[i
].part1
== 'U')
6820 && *switches
[i
].part1
== atom
[0])
6822 if (!strncmp (switches
[i
].args
[0], &atom
[1], len
- 1)
6823 && (starred
|| (switches
[i
].part1
[1] == '\0'
6824 && switches
[i
].args
[0][len
- 1] == '\0'))
6825 && check_live_switch (i
, (starred
? 1 : -1)))
6833 /* Inline subroutine of handle_braces. Mark all of the switches which
6834 match ATOM (extends to END_ATOM; STARRED indicates whether there
6835 was a star after the atom) for later processing. */
6837 mark_matching_switches (const char *atom
, const char *end_atom
, int starred
)
6840 int len
= end_atom
- atom
;
6841 int plen
= starred
? len
: -1;
6843 for (i
= 0; i
< n_switches
; i
++)
6844 if (!strncmp (switches
[i
].part1
, atom
, len
)
6845 && (starred
|| switches
[i
].part1
[len
] == '\0')
6846 && check_live_switch (i
, plen
))
6847 switches
[i
].ordering
= 1;
6850 /* Inline subroutine of handle_braces. Process all the currently
6851 marked switches through give_switch, and clear the marks. */
6853 process_marked_switches (void)
6857 for (i
= 0; i
< n_switches
; i
++)
6858 if (switches
[i
].ordering
== 1)
6860 switches
[i
].ordering
= 0;
6865 /* Handle a %{ ... } construct. P points just inside the leading {.
6866 Returns a pointer one past the end of the brace block, or 0
6867 if we call do_spec_1 and that returns -1. */
6870 handle_braces (const char *p
)
6872 const char *atom
, *end_atom
;
6873 const char *d_atom
= NULL
, *d_end_atom
= NULL
;
6874 char *esc_buf
= NULL
, *d_esc_buf
= NULL
;
6876 const char *orig
= p
;
6884 bool a_must_be_last
= false;
6885 bool ordered_set
= false;
6886 bool disjunct_set
= false;
6887 bool disj_matched
= false;
6888 bool disj_starred
= true;
6889 bool n_way_choice
= false;
6890 bool n_way_matched
= false;
6892 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
6899 /* Scan one "atom" (S in the description above of %{}, possibly
6900 with '!', '.', '@', ',', or '*' modifiers). */
6902 a_is_suffix
= false;
6903 a_is_starred
= false;
6904 a_is_negated
= false;
6905 a_is_spectype
= false;
6909 p
++, a_is_negated
= true;
6912 if (*p
== '%' && p
[1] == ':')
6916 p
= handle_spec_function (p
+ 2, &a_matched
, NULL
);
6921 p
++, a_is_suffix
= true;
6923 p
++, a_is_spectype
= true;
6927 while (ISIDNUM (*p
) || *p
== '-' || *p
== '+' || *p
== '='
6928 || *p
== ',' || *p
== '.' || *p
== '@' || *p
== '\\')
6934 fatal_error (input_location
,
6935 "braced spec %qs ends in escape", orig
);
6947 if (esc_buf
&& esc_buf
!= d_esc_buf
)
6950 ep
= esc_buf
= (char *) xmalloc (end_atom
- atom
- esc
+ 1);
6951 for (ap
= atom
; ap
!= end_atom
; ap
++, ep
++)
6963 p
++, a_is_starred
= 1;
6970 /* Substitute the switch(es) indicated by the current atom. */
6972 if (disjunct_set
|| n_way_choice
|| a_is_negated
|| a_is_suffix
6973 || a_is_spectype
|| atom
== end_atom
)
6976 mark_matching_switches (atom
, end_atom
, a_is_starred
);
6979 process_marked_switches ();
6983 /* Substitute some text if the current atom appears as a switch
6985 disjunct_set
= true;
6989 if (atom
&& atom
== end_atom
)
6991 if (!n_way_choice
|| disj_matched
|| *p
== '|'
6992 || a_is_negated
|| a_is_suffix
|| a_is_spectype
6996 /* An empty term may appear as the last choice of an
6997 N-way choice set; it means "otherwise". */
6998 a_must_be_last
= true;
6999 disj_matched
= !n_way_matched
;
7000 disj_starred
= false;
7004 if ((a_is_suffix
|| a_is_spectype
) && a_is_starred
)
7008 disj_starred
= false;
7010 /* Don't bother testing this atom if we already have a
7012 if (!disj_matched
&& !n_way_matched
)
7015 /* a_matched is already set by handle_spec_function. */;
7016 else if (a_is_suffix
)
7017 a_matched
= input_suffix_matches (atom
, end_atom
);
7018 else if (a_is_spectype
)
7019 a_matched
= input_spec_matches (atom
, end_atom
);
7021 a_matched
= switch_matches (atom
, end_atom
, a_is_starred
);
7023 if (a_matched
!= a_is_negated
)
7025 disj_matched
= true;
7027 d_end_atom
= end_atom
;
7028 d_esc_buf
= esc_buf
;
7035 /* Found the body, that is, the text to substitute if the
7036 current disjunction matches. */
7037 p
= process_brace_body (p
+ 1, d_atom
, d_end_atom
, disj_starred
,
7038 disj_matched
&& !n_way_matched
);
7042 /* If we have an N-way choice, reset state for the next
7046 n_way_choice
= true;
7047 n_way_matched
|= disj_matched
;
7048 disj_matched
= false;
7049 disj_starred
= true;
7050 d_atom
= d_end_atom
= NULL
;
7059 while (*p
++ != '}');
7062 if (d_esc_buf
&& d_esc_buf
!= esc_buf
)
7070 fatal_error (input_location
, "braced spec %qs is invalid at %qc", orig
, *p
);
7075 /* Subroutine of handle_braces. Scan and process a brace substitution body
7076 (X in the description of %{} syntax). P points one past the colon;
7077 ATOM and END_ATOM bracket the first atom which was found to be true
7078 (present) in the current disjunction; STARRED indicates whether all
7079 the atoms in the current disjunction were starred (for syntax validation);
7080 MATCHED indicates whether the disjunction matched or not, and therefore
7081 whether or not the body is to be processed through do_spec_1 or just
7082 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
7086 process_brace_body (const char *p
, const char *atom
, const char *end_atom
,
7087 int starred
, int matched
)
7089 const char *body
, *end_body
;
7090 unsigned int nesting_level
;
7091 bool have_subst
= false;
7093 /* Locate the closing } or ;, honoring nested braces.
7094 Trim trailing whitespace. */
7103 if (!--nesting_level
)
7106 else if (*p
== ';' && nesting_level
== 1)
7108 else if (*p
== '%' && p
[1] == '*' && nesting_level
== 1)
7110 else if (*p
== '\0')
7116 while (end_body
[-1] == ' ' || end_body
[-1] == '\t')
7119 if (have_subst
&& !starred
)
7124 /* Copy the substitution body to permanent storage and execute it.
7125 If have_subst is false, this is a simple matter of running the
7126 body through do_spec_1... */
7127 char *string
= save_string (body
, end_body
- body
);
7130 if (do_spec_1 (string
, 0, NULL
) < 0)
7138 /* ... but if have_subst is true, we have to process the
7139 body once for each matching switch, with %* set to the
7140 variant part of the switch. */
7141 unsigned int hard_match_len
= end_atom
- atom
;
7144 for (i
= 0; i
< n_switches
; i
++)
7145 if (!strncmp (switches
[i
].part1
, atom
, hard_match_len
)
7146 && check_live_switch (i
, hard_match_len
))
7148 if (do_spec_1 (string
, 0,
7149 &switches
[i
].part1
[hard_match_len
]) < 0)
7154 /* Pass any arguments this switch has. */
7156 suffix_subst
= NULL
;
7165 fatal_error (input_location
, "braced spec body %qs is invalid", body
);
7168 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
7169 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
7170 spec, or -1 if either exact match or %* is used.
7172 A -O switch is obsoleted by a later -O switch. A -f, -g, -m, or -W switch
7173 whose value does not begin with "no-" is obsoleted by the same value
7174 with the "no-", similarly for a switch with the "no-" prefix. */
7177 check_live_switch (int switchnum
, int prefix_length
)
7179 const char *name
= switches
[switchnum
].part1
;
7182 /* If we already processed this switch and determined if it was
7183 live or not, return our past determination. */
7184 if (switches
[switchnum
].live_cond
!= 0)
7185 return ((switches
[switchnum
].live_cond
& SWITCH_LIVE
) != 0
7186 && (switches
[switchnum
].live_cond
& SWITCH_FALSE
) == 0
7187 && (switches
[switchnum
].live_cond
& SWITCH_IGNORE_PERMANENTLY
)
7190 /* In the common case of {<at-most-one-letter>*}, a negating
7191 switch would always match, so ignore that case. We will just
7192 send the conflicting switches to the compiler phase. */
7193 if (prefix_length
>= 0 && prefix_length
<= 1)
7196 /* Now search for duplicate in a manner that depends on the name. */
7200 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
7201 if (switches
[i
].part1
[0] == 'O')
7203 switches
[switchnum
].validated
= true;
7204 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
7209 case 'W': case 'f': case 'm': case 'g':
7210 if (! strncmp (name
+ 1, "no-", 3))
7212 /* We have Xno-YYY, search for XYYY. */
7213 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
7214 if (switches
[i
].part1
[0] == name
[0]
7215 && ! strcmp (&switches
[i
].part1
[1], &name
[4]))
7217 /* --specs are validated with the validate_switches mechanism. */
7218 if (switches
[switchnum
].known
)
7219 switches
[switchnum
].validated
= true;
7220 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
7226 /* We have XYYY, search for Xno-YYY. */
7227 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
7228 if (switches
[i
].part1
[0] == name
[0]
7229 && switches
[i
].part1
[1] == 'n'
7230 && switches
[i
].part1
[2] == 'o'
7231 && switches
[i
].part1
[3] == '-'
7232 && !strcmp (&switches
[i
].part1
[4], &name
[1]))
7234 /* --specs are validated with the validate_switches mechanism. */
7235 if (switches
[switchnum
].known
)
7236 switches
[switchnum
].validated
= true;
7237 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
7244 /* Otherwise the switch is live. */
7245 switches
[switchnum
].live_cond
|= SWITCH_LIVE
;
7249 /* Pass a switch to the current accumulating command
7250 in the same form that we received it.
7251 SWITCHNUM identifies the switch; it is an index into
7252 the vector of switches gcc received, which is `switches'.
7253 This cannot fail since it never finishes a command line.
7255 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
7258 give_switch (int switchnum
, int omit_first_word
)
7260 if ((switches
[switchnum
].live_cond
& SWITCH_IGNORE
) != 0)
7263 if (!omit_first_word
)
7265 do_spec_1 ("-", 0, NULL
);
7266 do_spec_1 (switches
[switchnum
].part1
, 1, NULL
);
7269 if (switches
[switchnum
].args
!= 0)
7272 for (p
= switches
[switchnum
].args
; *p
; p
++)
7274 const char *arg
= *p
;
7276 do_spec_1 (" ", 0, NULL
);
7279 unsigned length
= strlen (arg
);
7282 while (length
-- && !IS_DIR_SEPARATOR (arg
[length
]))
7283 if (arg
[length
] == '.')
7285 (CONST_CAST (char *, arg
))[length
] = 0;
7289 do_spec_1 (arg
, 1, NULL
);
7291 (CONST_CAST (char *, arg
))[length
] = '.';
7292 do_spec_1 (suffix_subst
, 1, NULL
);
7295 do_spec_1 (arg
, 1, NULL
);
7299 do_spec_1 (" ", 0, NULL
);
7300 switches
[switchnum
].validated
= true;
7303 /* Print GCC configuration (e.g. version, thread model, target,
7304 configuration_arguments) to a given FILE. */
7307 print_configuration (FILE *file
)
7312 fnotice (file
, "Target: %s\n", spec_machine
);
7313 fnotice (file
, "Configured with: %s\n", configuration_arguments
);
7315 #ifdef THREAD_MODEL_SPEC
7316 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
7317 but there's no point in doing all this processing just to get
7318 thread_model back. */
7319 obstack_init (&obstack
);
7320 do_spec_1 (THREAD_MODEL_SPEC
, 0, thread_model
);
7321 obstack_1grow (&obstack
, '\0');
7322 thrmod
= XOBFINISH (&obstack
, const char *);
7324 thrmod
= thread_model
;
7327 fnotice (file
, "Thread model: %s\n", thrmod
);
7328 fnotice (file
, "Supported LTO compression algorithms: zlib");
7330 fnotice (file
, " zstd");
7332 fnotice (file
, "\n");
7334 /* compiler_version is truncated at the first space when initialized
7335 from version string, so truncate version_string at the first space
7336 before comparing. */
7337 for (n
= 0; version_string
[n
]; n
++)
7338 if (version_string
[n
] == ' ')
7341 if (! strncmp (version_string
, compiler_version
, n
)
7342 && compiler_version
[n
] == 0)
7343 fnotice (file
, "gcc version %s %s\n", version_string
,
7346 fnotice (file
, "gcc driver version %s %sexecuting gcc version %s\n",
7347 version_string
, pkgversion_string
, compiler_version
);
7351 #define RETRY_ICE_ATTEMPTS 3
7353 /* Returns true if FILE1 and FILE2 contain equivalent data, 0 otherwise. */
7356 files_equal_p (char *file1
, char *file2
)
7358 struct stat st1
, st2
;
7361 const int bufsize
= 8192;
7362 char *buf
= XNEWVEC (char, bufsize
);
7364 fd1
= open (file1
, O_RDONLY
);
7365 fd2
= open (file2
, O_RDONLY
);
7367 if (fd1
< 0 || fd2
< 0)
7370 if (fstat (fd1
, &st1
) < 0 || fstat (fd2
, &st2
) < 0)
7373 if (st1
.st_size
!= st2
.st_size
)
7376 for (n
= st1
.st_size
; n
; n
-= len
)
7379 if ((int) len
> bufsize
/ 2)
7382 if (read (fd1
, buf
, len
) != (int) len
7383 || read (fd2
, buf
+ bufsize
/ 2, len
) != (int) len
)
7388 if (memcmp (buf
, buf
+ bufsize
/ 2, len
) != 0)
7405 /* Check that compiler's output doesn't differ across runs.
7406 TEMP_STDOUT_FILES and TEMP_STDERR_FILES are arrays of files, containing
7407 stdout and stderr for each compiler run. Return true if all of
7408 TEMP_STDOUT_FILES and TEMP_STDERR_FILES are equivalent. */
7411 check_repro (char **temp_stdout_files
, char **temp_stderr_files
)
7414 for (i
= 0; i
< RETRY_ICE_ATTEMPTS
- 2; ++i
)
7416 if (!files_equal_p (temp_stdout_files
[i
], temp_stdout_files
[i
+ 1])
7417 || !files_equal_p (temp_stderr_files
[i
], temp_stderr_files
[i
+ 1]))
7419 fnotice (stderr
, "The bug is not reproducible, so it is"
7420 " likely a hardware or OS problem.\n");
7424 return i
== RETRY_ICE_ATTEMPTS
- 2;
7427 enum attempt_status
{
7428 ATTEMPT_STATUS_FAIL_TO_RUN
,
7429 ATTEMPT_STATUS_SUCCESS
,
7434 /* Run compiler with arguments NEW_ARGV to reproduce the ICE, storing stdout
7435 to OUT_TEMP and stderr to ERR_TEMP. If APPEND is TRUE, append to OUT_TEMP
7436 and ERR_TEMP instead of truncating. If EMIT_SYSTEM_INFO is TRUE, also write
7437 GCC configuration into to ERR_TEMP. Return ATTEMPT_STATUS_FAIL_TO_RUN if
7438 compiler failed to run, ATTEMPT_STATUS_ICE if compiled ICE-ed and
7439 ATTEMPT_STATUS_SUCCESS otherwise. */
7441 static enum attempt_status
7442 run_attempt (const char **new_argv
, const char *out_temp
,
7443 const char *err_temp
, int emit_system_info
, int append
)
7446 if (emit_system_info
)
7448 FILE *file_out
= fopen (err_temp
, "a");
7449 print_configuration (file_out
);
7450 fputs ("\n", file_out
);
7456 struct pex_obj
*pex
;
7458 int pex_flags
= PEX_USE_PIPES
| PEX_LAST
;
7459 enum attempt_status status
= ATTEMPT_STATUS_FAIL_TO_RUN
;
7462 pex_flags
|= PEX_STDOUT_APPEND
| PEX_STDERR_APPEND
;
7464 pex
= pex_init (PEX_USE_PIPES
, new_argv
[0], NULL
);
7466 fatal_error (input_location
, "%<pex_init%> failed: %m");
7468 errmsg
= pex_run (pex
, pex_flags
, new_argv
[0],
7469 CONST_CAST2 (char *const *, const char **, &new_argv
[1]),
7470 out_temp
, err_temp
, &err
);
7474 fatal_error (input_location
,
7475 err
? G_ ("cannot execute %qs: %s: %m")
7476 : G_ ("cannot execute %qs: %s"),
7477 new_argv
[0], errmsg
);
7480 if (!pex_get_status (pex
, 1, &exit_status
))
7483 switch (WEXITSTATUS (exit_status
))
7486 status
= ATTEMPT_STATUS_ICE
;
7489 case SUCCESS_EXIT_CODE
:
7490 status
= ATTEMPT_STATUS_SUCCESS
;
7502 /* This routine reads lines from IN file, adds C++ style comments
7503 at the begining of each line and writes result into OUT. */
7506 insert_comments (const char *file_in
, const char *file_out
)
7508 FILE *in
= fopen (file_in
, "rb");
7509 FILE *out
= fopen (file_out
, "wb");
7512 bool add_comment
= true;
7513 while (fgets (line
, sizeof (line
), in
))
7518 add_comment
= strchr (line
, '\n') != NULL
;
7525 /* This routine adds preprocessed source code into the given ERR_FILE.
7526 To do this, it adds "-E" to NEW_ARGV and execute RUN_ATTEMPT routine to
7527 add information in report file. RUN_ATTEMPT should return
7528 ATTEMPT_STATUS_SUCCESS, in other case we cannot generate the report. */
7531 do_report_bug (const char **new_argv
, const int nargs
,
7532 char **out_file
, char **err_file
)
7535 int fd
= open (*out_file
, O_RDWR
| O_APPEND
);
7538 write (fd
, "\n//", 3);
7539 for (i
= 0; i
< nargs
; i
++)
7542 write (fd
, new_argv
[i
], strlen (new_argv
[i
]));
7544 write (fd
, "\n\n", 2);
7546 new_argv
[nargs
] = "-E";
7547 new_argv
[nargs
+ 1] = NULL
;
7549 status
= run_attempt (new_argv
, *out_file
, *err_file
, 0, 1);
7551 if (status
== ATTEMPT_STATUS_SUCCESS
)
7553 fnotice (stderr
, "Preprocessed source stored into %s file,"
7554 " please attach this to your bugreport.\n", *out_file
);
7555 /* Make sure it is not deleted. */
7561 /* Try to reproduce ICE. If bug is reproducible, generate report .err file
7562 containing GCC configuration, backtrace, compiler's command line options
7563 and preprocessed source code. */
7566 try_generate_repro (const char **argv
)
7568 int i
, nargs
, out_arg
= -1, quiet
= 0, attempt
;
7569 const char **new_argv
;
7570 char *temp_files
[RETRY_ICE_ATTEMPTS
* 2];
7571 char **temp_stdout_files
= &temp_files
[0];
7572 char **temp_stderr_files
= &temp_files
[RETRY_ICE_ATTEMPTS
];
7574 if (gcc_input_filename
== NULL
|| ! strcmp (gcc_input_filename
, "-"))
7577 for (nargs
= 0; argv
[nargs
] != NULL
; ++nargs
)
7578 /* Only retry compiler ICEs, not preprocessor ones. */
7579 if (! strcmp (argv
[nargs
], "-E"))
7581 else if (argv
[nargs
][0] == '-' && argv
[nargs
][1] == 'o')
7588 /* If the compiler is going to output any time information,
7589 it might varry between invocations. */
7590 else if (! strcmp (argv
[nargs
], "-quiet"))
7592 else if (! strcmp (argv
[nargs
], "-ftime-report"))
7595 if (out_arg
== -1 || !quiet
)
7598 memset (temp_files
, '\0', sizeof (temp_files
));
7599 new_argv
= XALLOCAVEC (const char *, nargs
+ 4);
7600 memcpy (new_argv
, argv
, (nargs
+ 1) * sizeof (const char *));
7601 new_argv
[nargs
++] = "-frandom-seed=0";
7602 new_argv
[nargs
++] = "-fdump-noaddr";
7603 new_argv
[nargs
] = NULL
;
7604 if (new_argv
[out_arg
][2] == '\0')
7605 new_argv
[out_arg
+ 1] = "-";
7607 new_argv
[out_arg
] = "-o-";
7610 for (attempt
= 0; attempt
< RETRY_ICE_ATTEMPTS
; ++attempt
)
7612 int emit_system_info
= 0;
7614 temp_stdout_files
[attempt
] = make_temp_file (".out");
7615 temp_stderr_files
[attempt
] = make_temp_file (".err");
7617 if (attempt
== RETRY_ICE_ATTEMPTS
- 1)
7620 emit_system_info
= 1;
7623 status
= run_attempt (new_argv
, temp_stdout_files
[attempt
],
7624 temp_stderr_files
[attempt
], emit_system_info
,
7627 if (status
!= ATTEMPT_STATUS_ICE
)
7629 fnotice (stderr
, "The bug is not reproducible, so it is"
7630 " likely a hardware or OS problem.\n");
7635 if (!check_repro (temp_stdout_files
, temp_stderr_files
))
7639 /* Insert commented out backtrace into report file. */
7640 char **stderr_commented
= &temp_stdout_files
[RETRY_ICE_ATTEMPTS
- 1];
7641 insert_comments (temp_stderr_files
[RETRY_ICE_ATTEMPTS
- 1],
7644 /* In final attempt we append compiler options and preprocesssed code to last
7645 generated .out file with configuration and backtrace. */
7646 char **err
= &temp_stderr_files
[RETRY_ICE_ATTEMPTS
- 1];
7647 do_report_bug (new_argv
, nargs
, stderr_commented
, err
);
7651 for (i
= 0; i
< RETRY_ICE_ATTEMPTS
* 2; i
++)
7654 unlink (temp_stdout_files
[i
]);
7655 free (temp_stdout_files
[i
]);
7659 /* Search for a file named NAME trying various prefixes including the
7660 user's -B prefix and some standard ones.
7661 Return the absolute file name found. If nothing is found, return NAME. */
7664 find_file (const char *name
)
7666 char *newname
= find_a_file (&startfile_prefixes
, name
, R_OK
, true);
7667 return newname
? newname
: name
;
7670 /* Determine whether a directory exists. If LINKER, return 0 for
7671 certain fixed names not needed by the linker. */
7674 is_directory (const char *path1
, bool linker
)
7681 /* Ensure the string ends with "/.". The resulting path will be a
7682 directory even if the given path is a symbolic link. */
7683 len1
= strlen (path1
);
7684 path
= (char *) alloca (3 + len1
);
7685 memcpy (path
, path1
, len1
);
7687 if (!IS_DIR_SEPARATOR (cp
[-1]))
7688 *cp
++ = DIR_SEPARATOR
;
7692 /* Exclude directories that the linker is known to search. */
7694 && IS_DIR_SEPARATOR (path
[0])
7696 && filename_ncmp (path
+ 1, "lib", 3) == 0)
7698 && filename_ncmp (path
+ 1, "usr", 3) == 0
7699 && IS_DIR_SEPARATOR (path
[4])
7700 && filename_ncmp (path
+ 5, "lib", 3) == 0)))
7703 return (stat (path
, &st
) >= 0 && S_ISDIR (st
.st_mode
));
7706 /* Set up the various global variables to indicate that we're processing
7707 the input file named FILENAME. */
7710 set_input (const char *filename
)
7714 gcc_input_filename
= filename
;
7715 input_filename_length
= strlen (gcc_input_filename
);
7716 input_basename
= lbasename (gcc_input_filename
);
7718 /* Find a suffix starting with the last period,
7719 and set basename_length to exclude that suffix. */
7720 basename_length
= strlen (input_basename
);
7721 suffixed_basename_length
= basename_length
;
7722 p
= input_basename
+ basename_length
;
7723 while (p
!= input_basename
&& *p
!= '.')
7725 if (*p
== '.' && p
!= input_basename
)
7727 basename_length
= p
- input_basename
;
7728 input_suffix
= p
+ 1;
7733 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
7734 we will need to do a stat on the gcc_input_filename. The
7735 INPUT_STAT_SET signals that the stat is needed. */
7739 /* On fatal signals, delete all the temporary files. */
7742 fatal_signal (int signum
)
7744 signal (signum
, SIG_DFL
);
7745 delete_failure_queue ();
7746 delete_temp_files ();
7747 /* Get the same signal again, this time not handled,
7748 so its normal effect occurs. */
7749 kill (getpid (), signum
);
7752 /* Compare the contents of the two files named CMPFILE[0] and
7753 CMPFILE[1]. Return zero if they're identical, nonzero
7757 compare_files (char *cmpfile
[])
7760 FILE *temp
[2] = { NULL
, NULL
};
7766 void *map
[2] = { NULL
, NULL
};
7768 for (i
= 0; i
< 2; i
++)
7772 if (stat (cmpfile
[i
], &st
) < 0 || !S_ISREG (st
.st_mode
))
7774 error ("%s: could not determine length of compare-debug file %s",
7775 gcc_input_filename
, cmpfile
[i
]);
7780 length
[i
] = st
.st_size
;
7783 if (!ret
&& length
[0] != length
[1])
7785 error ("%s: %<-fcompare-debug%> failure (length)", gcc_input_filename
);
7790 for (i
= 0; i
< 2; i
++)
7792 int fd
= open (cmpfile
[i
], O_RDONLY
);
7795 error ("%s: could not open compare-debug file %s",
7796 gcc_input_filename
, cmpfile
[i
]);
7801 map
[i
] = mmap (NULL
, length
[i
], PROT_READ
, MAP_PRIVATE
, fd
, 0);
7804 if (map
[i
] == (void *) MAP_FAILED
)
7813 if (memcmp (map
[0], map
[1], length
[0]) != 0)
7815 error ("%s: %<-fcompare-debug%> failure", gcc_input_filename
);
7820 for (i
= 0; i
< 2; i
++)
7822 munmap ((caddr_t
) map
[i
], length
[i
]);
7831 for (i
= 0; i
< 2; i
++)
7833 temp
[i
] = fopen (cmpfile
[i
], "r");
7836 error ("%s: could not open compare-debug file %s",
7837 gcc_input_filename
, cmpfile
[i
]);
7843 if (!ret
&& temp
[0] && temp
[1])
7847 c0
= fgetc (temp
[0]);
7848 c1
= fgetc (temp
[1]);
7852 error ("%s: %<-fcompare-debug%> failure",
7853 gcc_input_filename
);
7862 for (i
= 1; i
>= 0; i
--)
7871 driver::driver (bool can_finalize
, bool debug
) :
7872 explicit_link_files (NULL
),
7873 decoded_options (NULL
)
7875 env
.init (can_finalize
, debug
);
7880 XDELETEVEC (explicit_link_files
);
7881 XDELETEVEC (decoded_options
);
7884 /* driver::main is implemented as a series of driver:: method calls. */
7887 driver::main (int argc
, char **argv
)
7891 set_progname (argv
[0]);
7892 expand_at_files (&argc
, &argv
);
7893 decode_argv (argc
, const_cast <const char **> (argv
));
7894 global_initializations ();
7895 build_multilib_strings ();
7897 putenv_COLLECT_AS_OPTIONS (assembler_options
);
7898 putenv_COLLECT_GCC (argv
[0]);
7899 maybe_putenv_COLLECT_LTO_WRAPPER ();
7900 maybe_putenv_OFFLOAD_TARGETS ();
7901 handle_unrecognized_options ();
7905 m_option_proposer
.suggest_completion (completion
);
7909 if (!maybe_print_and_exit ())
7912 early_exit
= prepare_infiles ();
7914 return get_exit_code ();
7916 do_spec_on_infiles ();
7917 maybe_run_linker (argv
[0]);
7919 return get_exit_code ();
7922 /* Locate the final component of argv[0] after any leading path, and set
7923 the program name accordingly. */
7926 driver::set_progname (const char *argv0
) const
7928 const char *p
= argv0
+ strlen (argv0
);
7929 while (p
!= argv0
&& !IS_DIR_SEPARATOR (p
[-1]))
7933 xmalloc_set_program_name (progname
);
7936 /* Expand any @ files within the command-line args,
7937 setting at_file_supplied if any were expanded. */
7940 driver::expand_at_files (int *argc
, char ***argv
) const
7942 char **old_argv
= *argv
;
7944 expandargv (argc
, argv
);
7946 /* Determine if any expansions were made. */
7947 if (*argv
!= old_argv
)
7948 at_file_supplied
= true;
7951 /* Decode the command-line arguments from argc/argv into the
7952 decoded_options array. */
7955 driver::decode_argv (int argc
, const char **argv
)
7957 init_opts_obstack ();
7958 init_options_struct (&global_options
, &global_options_set
);
7960 decode_cmdline_options_to_array (argc
, argv
,
7962 &decoded_options
, &decoded_options_count
);
7965 /* Perform various initializations and setup. */
7968 driver::global_initializations ()
7970 /* Unlock the stdio streams. */
7971 unlock_std_streams ();
7973 gcc_init_libintl ();
7975 diagnostic_initialize (global_dc
, 0);
7976 diagnostic_color_init (global_dc
);
7977 diagnostic_urls_init (global_dc
);
7979 #ifdef GCC_DRIVER_HOST_INITIALIZATION
7980 /* Perform host dependent initialization when needed. */
7981 GCC_DRIVER_HOST_INITIALIZATION
;
7984 if (atexit (delete_temp_files
) != 0)
7985 fatal_error (input_location
, "atexit failed");
7987 if (signal (SIGINT
, SIG_IGN
) != SIG_IGN
)
7988 signal (SIGINT
, fatal_signal
);
7990 if (signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
7991 signal (SIGHUP
, fatal_signal
);
7993 if (signal (SIGTERM
, SIG_IGN
) != SIG_IGN
)
7994 signal (SIGTERM
, fatal_signal
);
7996 if (signal (SIGPIPE
, SIG_IGN
) != SIG_IGN
)
7997 signal (SIGPIPE
, fatal_signal
);
8000 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
8001 receive the signal. A different setting is inheritable */
8002 signal (SIGCHLD
, SIG_DFL
);
8005 /* Parsing and gimplification sometimes need quite large stack.
8006 Increase stack size limits if possible. */
8007 stack_limit_increase (64 * 1024 * 1024);
8009 /* Allocate the argument vector. */
8012 obstack_init (&obstack
);
8015 /* Build multilib_select, et. al from the separate lines that make up each
8016 multilib selection. */
8019 driver::build_multilib_strings () const
8023 const char *const *q
= multilib_raw
;
8026 obstack_init (&multilib_obstack
);
8027 while ((p
= *q
++) != (char *) 0)
8028 obstack_grow (&multilib_obstack
, p
, strlen (p
));
8030 obstack_1grow (&multilib_obstack
, 0);
8031 multilib_select
= XOBFINISH (&multilib_obstack
, const char *);
8033 q
= multilib_matches_raw
;
8034 while ((p
= *q
++) != (char *) 0)
8035 obstack_grow (&multilib_obstack
, p
, strlen (p
));
8037 obstack_1grow (&multilib_obstack
, 0);
8038 multilib_matches
= XOBFINISH (&multilib_obstack
, const char *);
8040 q
= multilib_exclusions_raw
;
8041 while ((p
= *q
++) != (char *) 0)
8042 obstack_grow (&multilib_obstack
, p
, strlen (p
));
8044 obstack_1grow (&multilib_obstack
, 0);
8045 multilib_exclusions
= XOBFINISH (&multilib_obstack
, const char *);
8047 q
= multilib_reuse_raw
;
8048 while ((p
= *q
++) != (char *) 0)
8049 obstack_grow (&multilib_obstack
, p
, strlen (p
));
8051 obstack_1grow (&multilib_obstack
, 0);
8052 multilib_reuse
= XOBFINISH (&multilib_obstack
, const char *);
8055 for (size_t i
= 0; i
< ARRAY_SIZE (multilib_defaults_raw
); i
++)
8058 obstack_1grow (&multilib_obstack
, ' ');
8059 obstack_grow (&multilib_obstack
,
8060 multilib_defaults_raw
[i
],
8061 strlen (multilib_defaults_raw
[i
]));
8065 obstack_1grow (&multilib_obstack
, 0);
8066 multilib_defaults
= XOBFINISH (&multilib_obstack
, const char *);
8070 /* Set up the spec-handling machinery. */
8073 driver::set_up_specs () const
8075 const char *spec_machine_suffix
;
8079 #ifdef INIT_ENVIRONMENT
8080 /* Set up any other necessary machine specific environment variables. */
8081 xputenv (INIT_ENVIRONMENT
);
8084 /* Make a table of what switches there are (switches, n_switches).
8085 Make a table of specified input files (infiles, n_infiles).
8086 Decode switches that are handled locally. */
8088 process_command (decoded_options_count
, decoded_options
);
8090 /* Initialize the vector of specs to just the default.
8091 This means one element containing 0s, as a terminator. */
8093 compilers
= XNEWVAR (struct compiler
, sizeof default_compilers
);
8094 memcpy (compilers
, default_compilers
, sizeof default_compilers
);
8095 n_compilers
= n_default_compilers
;
8097 /* Read specs from a file if there is one. */
8099 machine_suffix
= concat (spec_host_machine
, dir_separator_str
, spec_version
,
8100 accel_dir_suffix
, dir_separator_str
, NULL
);
8101 just_machine_suffix
= concat (spec_machine
, dir_separator_str
, NULL
);
8103 specs_file
= find_a_file (&startfile_prefixes
, "specs", R_OK
, true);
8104 /* Read the specs file unless it is a default one. */
8105 if (specs_file
!= 0 && strcmp (specs_file
, "specs"))
8106 read_specs (specs_file
, true, false);
8110 #ifdef ACCEL_COMPILER
8111 spec_machine_suffix
= machine_suffix
;
8113 spec_machine_suffix
= just_machine_suffix
;
8116 /* We need to check standard_exec_prefix/spec_machine_suffix/specs
8117 for any override of as, ld and libraries. */
8118 specs_file
= (char *) alloca (strlen (standard_exec_prefix
)
8119 + strlen (spec_machine_suffix
) + sizeof ("specs"));
8120 strcpy (specs_file
, standard_exec_prefix
);
8121 strcat (specs_file
, spec_machine_suffix
);
8122 strcat (specs_file
, "specs");
8123 if (access (specs_file
, R_OK
) == 0)
8124 read_specs (specs_file
, true, false);
8126 /* Process any configure-time defaults specified for the command line
8127 options, via OPTION_DEFAULT_SPECS. */
8128 for (i
= 0; i
< ARRAY_SIZE (option_default_specs
); i
++)
8129 do_option_spec (option_default_specs
[i
].name
,
8130 option_default_specs
[i
].spec
);
8132 /* Process DRIVER_SELF_SPECS, adding any new options to the end
8133 of the command line. */
8135 for (i
= 0; i
< ARRAY_SIZE (driver_self_specs
); i
++)
8136 do_self_spec (driver_self_specs
[i
]);
8138 /* If not cross-compiling, look for executables in the standard
8140 if (*cross_compile
== '0')
8142 if (*md_exec_prefix
)
8144 add_prefix (&exec_prefixes
, md_exec_prefix
, "GCC",
8145 PREFIX_PRIORITY_LAST
, 0, 0);
8149 /* Process sysroot_suffix_spec. */
8150 if (*sysroot_suffix_spec
!= 0
8151 && !no_sysroot_suffix
8152 && do_spec_2 (sysroot_suffix_spec
, NULL
) == 0)
8154 if (argbuf
.length () > 1)
8155 error ("spec failure: more than one argument to "
8156 "%<SYSROOT_SUFFIX_SPEC%>");
8157 else if (argbuf
.length () == 1)
8158 target_sysroot_suffix
= xstrdup (argbuf
.last ());
8161 #ifdef HAVE_LD_SYSROOT
8162 /* Pass the --sysroot option to the linker, if it supports that. If
8163 there is a sysroot_suffix_spec, it has already been processed by
8164 this point, so target_system_root really is the system root we
8166 if (target_system_root
)
8168 obstack_grow (&obstack
, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
8169 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
8170 set_spec ("link", XOBFINISH (&obstack
, const char *), false);
8174 /* Process sysroot_hdrs_suffix_spec. */
8175 if (*sysroot_hdrs_suffix_spec
!= 0
8176 && !no_sysroot_suffix
8177 && do_spec_2 (sysroot_hdrs_suffix_spec
, NULL
) == 0)
8179 if (argbuf
.length () > 1)
8180 error ("spec failure: more than one argument "
8181 "to %<SYSROOT_HEADERS_SUFFIX_SPEC%>");
8182 else if (argbuf
.length () == 1)
8183 target_sysroot_hdrs_suffix
= xstrdup (argbuf
.last ());
8186 /* Look for startfiles in the standard places. */
8187 if (*startfile_prefix_spec
!= 0
8188 && do_spec_2 (startfile_prefix_spec
, NULL
) == 0
8189 && do_spec_1 (" ", 0, NULL
) == 0)
8193 FOR_EACH_VEC_ELT (argbuf
, ndx
, arg
)
8194 add_sysrooted_prefix (&startfile_prefixes
, arg
, "BINUTILS",
8195 PREFIX_PRIORITY_LAST
, 0, 1);
8197 /* We should eventually get rid of all these and stick to
8198 startfile_prefix_spec exclusively. */
8199 else if (*cross_compile
== '0' || target_system_root
)
8201 if (*md_startfile_prefix
)
8202 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix
,
8203 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
8205 if (*md_startfile_prefix_1
)
8206 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix_1
,
8207 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
8209 /* If standard_startfile_prefix is relative, base it on
8210 standard_exec_prefix. This lets us move the installed tree
8211 as a unit. If GCC_EXEC_PREFIX is defined, base
8212 standard_startfile_prefix on that as well.
8214 If the prefix is relative, only search it for native compilers;
8215 otherwise we will search a directory containing host libraries. */
8216 if (IS_ABSOLUTE_PATH (standard_startfile_prefix
))
8217 add_sysrooted_prefix (&startfile_prefixes
,
8218 standard_startfile_prefix
, "BINUTILS",
8219 PREFIX_PRIORITY_LAST
, 0, 1);
8220 else if (*cross_compile
== '0')
8222 add_prefix (&startfile_prefixes
,
8223 concat (gcc_exec_prefix
8224 ? gcc_exec_prefix
: standard_exec_prefix
,
8226 standard_startfile_prefix
, NULL
),
8227 NULL
, PREFIX_PRIORITY_LAST
, 0, 1);
8230 /* Sysrooted prefixes are relocated because target_system_root is
8231 also relocated by gcc_exec_prefix. */
8232 if (*standard_startfile_prefix_1
)
8233 add_sysrooted_prefix (&startfile_prefixes
,
8234 standard_startfile_prefix_1
, "BINUTILS",
8235 PREFIX_PRIORITY_LAST
, 0, 1);
8236 if (*standard_startfile_prefix_2
)
8237 add_sysrooted_prefix (&startfile_prefixes
,
8238 standard_startfile_prefix_2
, "BINUTILS",
8239 PREFIX_PRIORITY_LAST
, 0, 1);
8242 /* Process any user specified specs in the order given on the command
8244 for (struct user_specs
*uptr
= user_specs_head
; uptr
; uptr
= uptr
->next
)
8246 char *filename
= find_a_file (&startfile_prefixes
, uptr
->filename
,
8248 read_specs (filename
? filename
: uptr
->filename
, false, true);
8251 /* Process any user self specs. */
8253 struct spec_list
*sl
;
8254 for (sl
= specs
; sl
; sl
= sl
->next
)
8255 if (sl
->name_len
== sizeof "self_spec" - 1
8256 && !strcmp (sl
->name
, "self_spec"))
8257 do_self_spec (*sl
->ptr_spec
);
8262 enum save_temps save
;
8264 if (!compare_debug_second
)
8266 n_switches_debug_check
[1] = n_switches
;
8267 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
8268 switches_debug_check
[1] = XDUPVEC (struct switchstr
, switches
,
8271 do_self_spec ("%:compare-debug-self-opt()");
8272 n_switches_debug_check
[0] = n_switches
;
8273 n_switches_alloc_debug_check
[0] = n_switches_alloc
;
8274 switches_debug_check
[0] = switches
;
8276 n_switches
= n_switches_debug_check
[1];
8277 n_switches_alloc
= n_switches_alloc_debug_check
[1];
8278 switches
= switches_debug_check
[1];
8281 /* Avoid crash when computing %j in this early. */
8282 save
= save_temps_flag
;
8283 save_temps_flag
= SAVE_TEMPS_NONE
;
8285 compare_debug
= -compare_debug
;
8286 do_self_spec ("%:compare-debug-self-opt()");
8288 save_temps_flag
= save
;
8290 if (!compare_debug_second
)
8292 n_switches_debug_check
[1] = n_switches
;
8293 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
8294 switches_debug_check
[1] = switches
;
8295 compare_debug
= -compare_debug
;
8296 n_switches
= n_switches_debug_check
[0];
8297 n_switches_alloc
= n_switches_debug_check
[0];
8298 switches
= switches_debug_check
[0];
8303 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
8304 if (gcc_exec_prefix
)
8305 gcc_exec_prefix
= concat (gcc_exec_prefix
, spec_host_machine
,
8306 dir_separator_str
, spec_version
,
8307 accel_dir_suffix
, dir_separator_str
, NULL
);
8309 /* Now we have the specs.
8310 Set the `valid' bits for switches that match anything in any spec. */
8312 validate_all_switches ();
8314 /* Now that we have the switches and the specs, set
8315 the subdirectory based on the options. */
8316 set_multilib_dir ();
8319 /* Set up to remember the pathname of gcc and any options
8320 needed for collect. We use argv[0] instead of progname because
8321 we need the complete pathname. */
8324 driver::putenv_COLLECT_GCC (const char *argv0
) const
8326 obstack_init (&collect_obstack
);
8327 obstack_grow (&collect_obstack
, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
8328 obstack_grow (&collect_obstack
, argv0
, strlen (argv0
) + 1);
8329 xputenv (XOBFINISH (&collect_obstack
, char *));
8332 /* Set up to remember the pathname of the lto wrapper. */
8335 driver::maybe_putenv_COLLECT_LTO_WRAPPER () const
8337 char *lto_wrapper_file
;
8340 lto_wrapper_file
= NULL
;
8342 lto_wrapper_file
= find_a_file (&exec_prefixes
, "lto-wrapper",
8344 if (lto_wrapper_file
)
8346 lto_wrapper_file
= convert_white_space (lto_wrapper_file
);
8347 lto_wrapper_spec
= lto_wrapper_file
;
8348 obstack_init (&collect_obstack
);
8349 obstack_grow (&collect_obstack
, "COLLECT_LTO_WRAPPER=",
8350 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
8351 obstack_grow (&collect_obstack
, lto_wrapper_spec
,
8352 strlen (lto_wrapper_spec
) + 1);
8353 xputenv (XOBFINISH (&collect_obstack
, char *));
8358 /* Set up to remember the names of offload targets. */
8361 driver::maybe_putenv_OFFLOAD_TARGETS () const
8363 if (offload_targets
&& offload_targets
[0] != '\0')
8365 obstack_grow (&collect_obstack
, "OFFLOAD_TARGET_NAMES=",
8366 sizeof ("OFFLOAD_TARGET_NAMES=") - 1);
8367 obstack_grow (&collect_obstack
, offload_targets
,
8368 strlen (offload_targets
) + 1);
8369 xputenv (XOBFINISH (&collect_obstack
, char *));
8372 free (offload_targets
);
8373 offload_targets
= NULL
;
8376 /* Reject switches that no pass was interested in. */
8379 driver::handle_unrecognized_options ()
8381 for (size_t i
= 0; (int) i
< n_switches
; i
++)
8382 if (! switches
[i
].validated
)
8384 const char *hint
= m_option_proposer
.suggest_option (switches
[i
].part1
);
8386 error ("unrecognized command-line option %<-%s%>;"
8387 " did you mean %<-%s%>?",
8388 switches
[i
].part1
, hint
);
8390 error ("unrecognized command-line option %<-%s%>",
8395 /* Handle the various -print-* options, returning 0 if the driver
8396 should exit, or nonzero if the driver should continue. */
8399 driver::maybe_print_and_exit () const
8401 if (print_search_dirs
)
8403 printf (_("install: %s%s\n"),
8404 gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
8405 gcc_exec_prefix
? "" : machine_suffix
);
8406 printf (_("programs: %s\n"),
8407 build_search_list (&exec_prefixes
, "", false, false));
8408 printf (_("libraries: %s\n"),
8409 build_search_list (&startfile_prefixes
, "", false, true));
8413 if (print_file_name
)
8415 printf ("%s\n", find_file (print_file_name
));
8419 if (print_prog_name
)
8421 if (use_ld
!= NULL
&& ! strcmp (print_prog_name
, "ld"))
8423 /* Append USE_LD to the default linker. */
8424 #ifdef DEFAULT_LINKER
8426 # ifdef HAVE_HOST_EXECUTABLE_SUFFIX
8427 int len
= (sizeof (DEFAULT_LINKER
)
8428 - sizeof (HOST_EXECUTABLE_SUFFIX
));
8432 char *default_linker
= xstrdup (DEFAULT_LINKER
);
8433 /* Strip HOST_EXECUTABLE_SUFFIX if DEFAULT_LINKER contains
8434 HOST_EXECUTABLE_SUFFIX. */
8435 if (! strcmp (&default_linker
[len
], HOST_EXECUTABLE_SUFFIX
))
8437 default_linker
[len
] = '\0';
8438 ld
= concat (default_linker
, use_ld
,
8439 HOST_EXECUTABLE_SUFFIX
, NULL
);
8444 ld
= concat (DEFAULT_LINKER
, use_ld
, NULL
);
8445 if (access (ld
, X_OK
) == 0)
8447 printf ("%s\n", ld
);
8451 print_prog_name
= concat (print_prog_name
, use_ld
, NULL
);
8453 char *newname
= find_a_file (&exec_prefixes
, print_prog_name
, X_OK
, 0);
8454 printf ("%s\n", (newname
? newname
: print_prog_name
));
8458 if (print_multi_lib
)
8460 print_multilib_info ();
8464 if (print_multi_directory
)
8466 if (multilib_dir
== NULL
)
8469 printf ("%s\n", multilib_dir
);
8473 if (print_multiarch
)
8475 if (multiarch_dir
== NULL
)
8478 printf ("%s\n", multiarch_dir
);
8484 if (target_system_root
)
8486 if (target_sysroot_suffix
)
8487 printf ("%s%s\n", target_system_root
, target_sysroot_suffix
);
8489 printf ("%s\n", target_system_root
);
8494 if (print_multi_os_directory
)
8496 if (multilib_os_dir
== NULL
)
8499 printf ("%s\n", multilib_os_dir
);
8503 if (print_sysroot_headers_suffix
)
8505 if (*sysroot_hdrs_suffix_spec
)
8507 printf("%s\n", (target_sysroot_hdrs_suffix
8508 ? target_sysroot_hdrs_suffix
8513 /* The error status indicates that only one set of fixed
8514 headers should be built. */
8515 fatal_error (input_location
,
8516 "not configured with sysroot headers suffix");
8519 if (print_help_list
)
8525 printf (_("\nFor bug reporting instructions, please see:\n"));
8526 printf ("%s.\n", bug_report_url
);
8531 /* We do not exit here. Instead we have created a fake input file
8532 called 'help-dummy' which needs to be compiled, and we pass this
8533 on the various sub-processes, along with the --help switch.
8534 Ensure their output appears after ours. */
8535 fputc ('\n', stdout
);
8541 printf (_("%s %s%s\n"), progname
, pkgversion_string
,
8543 printf ("Copyright %s 2020 Free Software Foundation, Inc.\n",
8545 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
8546 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
8551 /* We do not exit here. We use the same mechanism of --help to print
8552 the version of the sub-processes. */
8553 fputc ('\n', stdout
);
8559 print_configuration (stderr
);
8567 /* Figure out what to do with each input file.
8568 Return true if we need to exit early from "main", false otherwise. */
8571 driver::prepare_infiles ()
8574 int lang_n_infiles
= 0;
8576 if (n_infiles
== added_libraries
)
8577 fatal_error (input_location
, "no input files");
8580 /* Early exit needed from main. */
8583 /* Make a place to record the compiler output file names
8584 that correspond to the input files. */
8587 i
+= lang_specific_extra_outfiles
;
8588 outfiles
= XCNEWVEC (const char *, i
);
8590 /* Record which files were specified explicitly as link input. */
8592 explicit_link_files
= XCNEWVEC (char, n_infiles
);
8594 combine_inputs
= have_o
|| flag_wpa
;
8596 for (i
= 0; (int) i
< n_infiles
; i
++)
8598 const char *name
= infiles
[i
].name
;
8599 struct compiler
*compiler
= lookup_compiler (name
,
8601 infiles
[i
].language
);
8603 if (compiler
&& !(compiler
->combinable
))
8604 combine_inputs
= false;
8606 if (lang_n_infiles
> 0 && compiler
!= input_file_compiler
8607 && infiles
[i
].language
&& infiles
[i
].language
[0] != '*')
8608 infiles
[i
].incompiler
= compiler
;
8612 input_file_compiler
= compiler
;
8613 infiles
[i
].incompiler
= compiler
;
8617 /* Since there is no compiler for this input file, assume it is a
8619 explicit_link_files
[i
] = 1;
8620 infiles
[i
].incompiler
= NULL
;
8622 infiles
[i
].compiled
= false;
8623 infiles
[i
].preprocessed
= false;
8626 if (!combine_inputs
&& have_c
&& have_o
&& lang_n_infiles
> 1)
8627 fatal_error (input_location
,
8628 "cannot specify %<-o%> with %<-c%>, %<-S%> or %<-E%> "
8629 "with multiple files");
8631 /* No early exit needed from main; we can continue. */
8635 /* Run the spec machinery on each input file. */
8638 driver::do_spec_on_infiles () const
8642 for (i
= 0; (int) i
< n_infiles
; i
++)
8644 int this_file_error
= 0;
8646 /* Tell do_spec what to substitute for %i. */
8648 input_file_number
= i
;
8649 set_input (infiles
[i
].name
);
8651 if (infiles
[i
].compiled
)
8654 /* Use the same thing in %o, unless cp->spec says otherwise. */
8656 outfiles
[i
] = gcc_input_filename
;
8658 /* Figure out which compiler from the file's suffix. */
8661 = lookup_compiler (infiles
[i
].name
, input_filename_length
,
8662 infiles
[i
].language
);
8664 if (input_file_compiler
)
8666 /* Ok, we found an applicable compiler. Run its spec. */
8668 if (input_file_compiler
->spec
[0] == '#')
8670 error ("%s: %s compiler not installed on this system",
8671 gcc_input_filename
, &input_file_compiler
->spec
[1]);
8672 this_file_error
= 1;
8680 free (debug_check_temp_file
[0]);
8681 debug_check_temp_file
[0] = NULL
;
8683 free (debug_check_temp_file
[1]);
8684 debug_check_temp_file
[1] = NULL
;
8687 value
= do_spec (input_file_compiler
->spec
);
8688 infiles
[i
].compiled
= true;
8690 this_file_error
= 1;
8691 else if (compare_debug
&& debug_check_temp_file
[0])
8694 inform (UNKNOWN_LOCATION
,
8695 "recompiling with %<-fcompare-debug%>");
8697 compare_debug
= -compare_debug
;
8698 n_switches
= n_switches_debug_check
[1];
8699 n_switches_alloc
= n_switches_alloc_debug_check
[1];
8700 switches
= switches_debug_check
[1];
8702 value
= do_spec (input_file_compiler
->spec
);
8704 compare_debug
= -compare_debug
;
8705 n_switches
= n_switches_debug_check
[0];
8706 n_switches_alloc
= n_switches_alloc_debug_check
[0];
8707 switches
= switches_debug_check
[0];
8711 error ("during %<-fcompare-debug%> recompilation");
8712 this_file_error
= 1;
8715 gcc_assert (debug_check_temp_file
[1]
8716 && filename_cmp (debug_check_temp_file
[0],
8717 debug_check_temp_file
[1]));
8720 inform (UNKNOWN_LOCATION
, "comparing final insns dumps");
8722 if (compare_files (debug_check_temp_file
))
8723 this_file_error
= 1;
8728 free (debug_check_temp_file
[0]);
8729 debug_check_temp_file
[0] = NULL
;
8731 free (debug_check_temp_file
[1]);
8732 debug_check_temp_file
[1] = NULL
;
8737 /* If this file's name does not contain a recognized suffix,
8738 record it as explicit linker input. */
8741 explicit_link_files
[i
] = 1;
8743 /* Clear the delete-on-failure queue, deleting the files in it
8744 if this compilation failed. */
8746 if (this_file_error
)
8748 delete_failure_queue ();
8751 /* If this compilation succeeded, don't delete those files later. */
8752 clear_failure_queue ();
8755 /* Reset the input file name to the first compile/object file name, for use
8756 with %b in LINK_SPEC. We use the first input file that we can find
8757 a compiler to compile it instead of using infiles.language since for
8758 languages other than C we use aliases that we then lookup later. */
8763 for (i
= 0; i
< n_infiles
; i
++)
8764 if (infiles
[i
].incompiler
8765 || (infiles
[i
].language
&& infiles
[i
].language
[0] != '*'))
8767 set_input (infiles
[i
].name
);
8774 /* Make sure INPUT_FILE_NUMBER points to first available open
8776 input_file_number
= n_infiles
;
8777 if (lang_specific_pre_link ())
8782 /* If we have to run the linker, do it now. */
8785 driver::maybe_run_linker (const char *argv0
) const
8788 int linker_was_run
= 0;
8789 int num_linker_inputs
;
8791 /* Determine if there are any linker input files. */
8792 num_linker_inputs
= 0;
8793 for (i
= 0; (int) i
< n_infiles
; i
++)
8794 if (explicit_link_files
[i
] || outfiles
[i
] != NULL
)
8795 num_linker_inputs
++;
8797 /* Arrange for temporary file names created during linking to take
8798 on names related with the linker output rather than with the
8799 inputs when appropriate. */
8800 if (outbase
&& *outbase
)
8804 char *tofree
= dumpdir
;
8805 gcc_checking_assert (strlen (dumpdir
) == dumpdir_length
);
8806 dumpdir
= concat (dumpdir
, outbase
, ".", NULL
);
8810 dumpdir
= concat (outbase
, ".", NULL
);
8811 dumpdir_length
+= strlen (outbase
) + 1;
8812 dumpdir_trailing_dash_added
= true;
8814 else if (dumpdir_trailing_dash_added
)
8816 gcc_assert (dumpdir
[dumpdir_length
- 1] == '-');
8817 dumpdir
[dumpdir_length
- 1] = '.';
8820 if (dumpdir_trailing_dash_added
)
8822 gcc_assert (dumpdir_length
> 0);
8823 gcc_assert (dumpdir
[dumpdir_length
- 1] == '.');
8828 input_basename
= outbase
= NULL
;
8829 outbase_length
= suffixed_basename_length
= basename_length
= 0;
8831 /* Run ld to link all the compiler output files. */
8833 if (num_linker_inputs
> 0 && !seen_error () && print_subprocess_help
< 2)
8835 int tmp
= execution_count
;
8837 detect_jobserver ();
8841 #if HAVE_LTO_PLUGIN > 0
8842 #if HAVE_LTO_PLUGIN == 2
8843 const char *fno_use_linker_plugin
= "fno-use-linker-plugin";
8845 const char *fuse_linker_plugin
= "fuse-linker-plugin";
8849 /* We'll use ld if we can't find collect2. */
8850 if (! strcmp (linker_name_spec
, "collect2"))
8852 char *s
= find_a_file (&exec_prefixes
, "collect2", X_OK
, false);
8854 linker_name_spec
= "ld";
8857 #if HAVE_LTO_PLUGIN > 0
8858 #if HAVE_LTO_PLUGIN == 2
8859 if (!switch_matches (fno_use_linker_plugin
,
8860 fno_use_linker_plugin
8861 + strlen (fno_use_linker_plugin
), 0))
8863 if (switch_matches (fuse_linker_plugin
,
8865 + strlen (fuse_linker_plugin
), 0))
8868 char *temp_spec
= find_a_file (&exec_prefixes
,
8869 LTOPLUGINSONAME
, R_OK
,
8872 fatal_error (input_location
,
8873 "%<-fuse-linker-plugin%>, but %s not found",
8875 linker_plugin_file_spec
= convert_white_space (temp_spec
);
8878 lto_gcc_spec
= argv0
;
8881 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
8883 putenv_from_prefixes (&exec_prefixes
, "COMPILER_PATH", false);
8884 putenv_from_prefixes (&startfile_prefixes
, LIBRARY_PATH_ENV
, true);
8886 if (print_subprocess_help
== 1)
8888 printf (_("\nLinker options\n==============\n\n"));
8889 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
8890 " to the linker.\n\n"));
8893 int value
= do_spec (link_command_spec
);
8896 linker_was_run
= (tmp
!= execution_count
);
8899 /* If options said don't run linker,
8900 complain about input files to be given to the linker. */
8902 if (! linker_was_run
&& !seen_error ())
8903 for (i
= 0; (int) i
< n_infiles
; i
++)
8904 if (explicit_link_files
[i
]
8905 && !(infiles
[i
].language
&& infiles
[i
].language
[0] == '*'))
8906 warning (0, "%s: linker input file unused because linking not done",
8910 /* The end of "main". */
8913 driver::final_actions () const
8915 /* Delete some or all of the temporary files we made. */
8918 delete_failure_queue ();
8919 delete_temp_files ();
8921 if (print_help_list
)
8923 printf (("\nFor bug reporting instructions, please see:\n"));
8924 printf ("%s\n", bug_report_url
);
8928 /* Detect whether jobserver is active and working. If not drop
8929 --jobserver-auth from MAKEFLAGS. */
8932 driver::detect_jobserver () const
8934 /* Detect jobserver and drop it if it's not working. */
8935 const char *makeflags
= env
.get ("MAKEFLAGS");
8936 if (makeflags
!= NULL
)
8938 const char *needle
= "--jobserver-auth=";
8939 const char *n
= strstr (makeflags
, needle
);
8946 = (sscanf (n
+ strlen (needle
), "%d,%d", &rfd
, &wfd
) == 2
8949 && is_valid_fd (rfd
)
8950 && is_valid_fd (wfd
));
8952 /* Drop the jobserver if it's not working now. */
8955 unsigned offset
= n
- makeflags
;
8956 char *dup
= xstrdup (makeflags
);
8959 const char *space
= strchr (makeflags
+ offset
, ' ');
8961 strcpy (dup
+ offset
, space
);
8962 xputenv (concat ("MAKEFLAGS=", dup
, NULL
));
8968 /* Determine what the exit code of the driver should be. */
8971 driver::get_exit_code () const
8973 return (signal_count
!= 0 ? 2
8974 : seen_error () ? (pass_exit_codes
? greatest_status
: 1)
8978 /* Find the proper compilation spec for the file name NAME,
8979 whose length is LENGTH. LANGUAGE is the specified language,
8980 or 0 if this file is to be passed to the linker. */
8982 static struct compiler
*
8983 lookup_compiler (const char *name
, size_t length
, const char *language
)
8985 struct compiler
*cp
;
8987 /* If this was specified by the user to be a linker input, indicate that. */
8988 if (language
!= 0 && language
[0] == '*')
8991 /* Otherwise, look for the language, if one is spec'd. */
8994 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
8995 if (cp
->suffix
[0] == '@' && !strcmp (cp
->suffix
+ 1, language
))
8997 if (name
!= NULL
&& strcmp (name
, "-") == 0
8998 && (strcmp (cp
->suffix
, "@c-header") == 0
8999 || strcmp (cp
->suffix
, "@c++-header") == 0)
9001 fatal_error (input_location
,
9002 "cannot use %<-%> as input filename for a "
9003 "precompiled header");
9008 error ("language %s not recognized", language
);
9012 /* Look for a suffix. */
9013 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
9015 if (/* The suffix `-' matches only the file name `-'. */
9016 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
9017 || (strlen (cp
->suffix
) < length
9018 /* See if the suffix matches the end of NAME. */
9019 && !strcmp (cp
->suffix
,
9020 name
+ length
- strlen (cp
->suffix
))
9025 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
9026 /* Look again, but case-insensitively this time. */
9028 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
9030 if (/* The suffix `-' matches only the file name `-'. */
9031 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
9032 || (strlen (cp
->suffix
) < length
9033 /* See if the suffix matches the end of NAME. */
9034 && ((!strcmp (cp
->suffix
,
9035 name
+ length
- strlen (cp
->suffix
))
9036 || !strpbrk (cp
->suffix
, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
9037 && !strcasecmp (cp
->suffix
,
9038 name
+ length
- strlen (cp
->suffix
)))
9044 if (cp
>= compilers
)
9046 if (cp
->spec
[0] != '@')
9047 /* A non-alias entry: return it. */
9050 /* An alias entry maps a suffix to a language.
9051 Search for the language; pass 0 for NAME and LENGTH
9052 to avoid infinite recursion if language not found. */
9053 return lookup_compiler (NULL
, 0, cp
->spec
+ 1);
9059 save_string (const char *s
, int len
)
9061 char *result
= XNEWVEC (char, len
+ 1);
9063 gcc_checking_assert (strlen (s
) >= (unsigned int) len
);
9064 memcpy (result
, s
, len
);
9071 validate_switches_from_spec (const char *spec
, bool user
)
9073 const char *p
= spec
;
9079 || (*p
== 'W' && *++p
== '{')
9080 || (*p
== '@' && *++p
== '{')))
9081 /* We have a switch spec. */
9082 p
= validate_switches (p
+ 1, user
, *p
== '{');
9086 validate_all_switches (void)
9088 struct compiler
*comp
;
9089 struct spec_list
*spec
;
9091 for (comp
= compilers
; comp
->spec
; comp
++)
9092 validate_switches_from_spec (comp
->spec
, false);
9094 /* Look through the linked list of specs read from the specs file. */
9095 for (spec
= specs
; spec
; spec
= spec
->next
)
9096 validate_switches_from_spec (*spec
->ptr_spec
, spec
->user_p
);
9098 validate_switches_from_spec (link_command_spec
, false);
9101 /* Look at the switch-name that comes after START and mark as valid
9102 all supplied switches that match it. If BRACED, handle other
9103 switches after '|' and '&', and specs after ':' until ';' or '}',
9104 going back for more switches after ';'. Without BRACED, handle
9105 only one atom. Return a pointer to whatever follows the handled
9106 items, after the closing brace if BRACED. */
9109 validate_switches (const char *start
, bool user_spec
, bool braced
)
9111 const char *p
= start
;
9115 bool suffix
= false;
9116 bool starred
= false;
9118 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
9127 if (*p
== '.' || *p
== ',')
9131 while (ISIDNUM (*p
) || *p
== '-' || *p
== '+' || *p
== '='
9132 || *p
== ',' || *p
== '.' || *p
== '@')
9137 starred
= true, p
++;
9143 /* Mark all matching switches as valid. */
9144 for (i
= 0; i
< n_switches
; i
++)
9145 if (!strncmp (switches
[i
].part1
, atom
, len
)
9146 && (starred
|| switches
[i
].part1
[len
] == '\0')
9147 && (switches
[i
].known
|| user_spec
))
9148 switches
[i
].validated
= true;
9155 if (*p
&& (p
[-1] == '|' || p
[-1] == '&'))
9158 if (*p
&& p
[-1] == ':')
9160 while (*p
&& *p
!= ';' && *p
!= '}')
9165 if (*p
== '{' || *p
== '<')
9166 p
= validate_switches (p
+1, user_spec
, *p
== '{');
9167 else if (p
[0] == 'W' && p
[1] == '{')
9168 p
= validate_switches (p
+2, user_spec
, true);
9169 else if (p
[0] == '@' && p
[1] == '{')
9170 p
= validate_switches (p
+2, user_spec
, true);
9177 if (*p
&& p
[-1] == ';')
9191 static struct mdswitchstr
*mdswitches
;
9192 static int n_mdswitches
;
9194 /* Check whether a particular argument was used. The first time we
9195 canonicalize the switches to keep only the ones we care about. */
9200 int operator () (const char *p
, int len
);
9207 const char *replace
;
9212 mswitchstr
*mswitches
;
9217 used_arg_t used_arg
;
9220 used_arg_t::operator () (const char *p
, int len
)
9226 struct mswitchstr
*matches
;
9230 /* Break multilib_matches into the component strings of string
9231 and replacement string. */
9232 for (q
= multilib_matches
; *q
!= '\0'; q
++)
9237 = (struct mswitchstr
*) alloca ((sizeof (struct mswitchstr
)) * cnt
);
9239 q
= multilib_matches
;
9248 fatal_error (input_location
, "multilib spec %qs is invalid",
9253 matches
[i
].len
= q
- matches
[i
].str
;
9255 matches
[i
].replace
= ++q
;
9256 while (*q
!= ';' && *q
!= '\0')
9259 goto invalid_matches
;
9262 matches
[i
].rep_len
= q
- matches
[i
].replace
;
9268 /* Now build a list of the replacement string for switches that we care
9269 about. Make sure we allocate at least one entry. This prevents
9270 xmalloc from calling fatal, and prevents us from re-executing this
9273 = XNEWVEC (struct mswitchstr
, n_mdswitches
+ (n_switches
? n_switches
: 1));
9274 for (i
= 0; i
< n_switches
; i
++)
9275 if ((switches
[i
].live_cond
& SWITCH_IGNORE
) == 0)
9277 int xlen
= strlen (switches
[i
].part1
);
9278 for (j
= 0; j
< cnt
; j
++)
9279 if (xlen
== matches
[j
].len
9280 && ! strncmp (switches
[i
].part1
, matches
[j
].str
, xlen
))
9282 mswitches
[n_mswitches
].str
= matches
[j
].replace
;
9283 mswitches
[n_mswitches
].len
= matches
[j
].rep_len
;
9284 mswitches
[n_mswitches
].replace
= (char *) 0;
9285 mswitches
[n_mswitches
].rep_len
= 0;
9291 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
9292 on the command line nor any options mutually incompatible with
9294 for (i
= 0; i
< n_mdswitches
; i
++)
9298 for (q
= multilib_options
; *q
!= '\0'; *q
&& q
++)
9304 while (strncmp (q
, mdswitches
[i
].str
, mdswitches
[i
].len
) != 0
9305 || strchr (" /", q
[mdswitches
[i
].len
]) == NULL
)
9307 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
9314 if (*q
!= ' ' && *q
!= '\0')
9316 while (*r
!= ' ' && *r
!= '\0')
9319 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
9322 if (used_arg (r
, q
- r
))
9327 mswitches
[n_mswitches
].str
= mdswitches
[i
].str
;
9328 mswitches
[n_mswitches
].len
= mdswitches
[i
].len
;
9329 mswitches
[n_mswitches
].replace
= (char *) 0;
9330 mswitches
[n_mswitches
].rep_len
= 0;
9343 for (i
= 0; i
< n_mswitches
; i
++)
9344 if (len
== mswitches
[i
].len
&& ! strncmp (p
, mswitches
[i
].str
, len
))
9350 void used_arg_t::finalize ()
9352 XDELETEVEC (mswitches
);
9359 default_arg (const char *p
, int len
)
9363 for (i
= 0; i
< n_mdswitches
; i
++)
9364 if (len
== mdswitches
[i
].len
&& ! strncmp (p
, mdswitches
[i
].str
, len
))
9370 /* Work out the subdirectory to use based on the options. The format of
9371 multilib_select is a list of elements. Each element is a subdirectory
9372 name followed by a list of options followed by a semicolon. The format
9373 of multilib_exclusions is the same, but without the preceding
9374 directory. First gcc will check the exclusions, if none of the options
9375 beginning with an exclamation point are present, and all of the other
9376 options are present, then we will ignore this completely. Passing
9377 that, gcc will consider each multilib_select in turn using the same
9378 rules for matching the options. If a match is found, that subdirectory
9380 A subdirectory name is optionally followed by a colon and the corresponding
9384 set_multilib_dir (void)
9387 unsigned int this_path_len
;
9388 const char *this_path
, *this_arg
;
9389 const char *start
, *end
;
9391 int ok
, ndfltok
, first
;
9394 start
= multilib_defaults
;
9395 while (*start
== ' ' || *start
== '\t')
9397 while (*start
!= '\0')
9400 while (*start
!= ' ' && *start
!= '\t' && *start
!= '\0')
9402 while (*start
== ' ' || *start
== '\t')
9410 mdswitches
= XNEWVEC (struct mdswitchstr
, n_mdswitches
);
9411 for (start
= multilib_defaults
; *start
!= '\0'; start
= end
+ 1)
9413 while (*start
== ' ' || *start
== '\t')
9419 for (end
= start
+ 1;
9420 *end
!= ' ' && *end
!= '\t' && *end
!= '\0'; end
++)
9423 obstack_grow (&multilib_obstack
, start
, end
- start
);
9424 obstack_1grow (&multilib_obstack
, 0);
9425 mdswitches
[i
].str
= XOBFINISH (&multilib_obstack
, const char *);
9426 mdswitches
[i
++].len
= end
- start
;
9433 p
= multilib_exclusions
;
9436 /* Ignore newlines. */
9443 /* Check the arguments. */
9450 fatal_error (input_location
, "multilib exclusions %qs is invalid",
9451 multilib_exclusions
);
9461 while (*p
!= ' ' && *p
!= ';')
9464 goto invalid_exclusions
;
9468 if (*this_arg
!= '!')
9476 ok
= used_arg (this_arg
, p
- this_arg
);
9491 p
= multilib_select
;
9493 /* Append multilib reuse rules if any. With those rules, we can reuse
9494 one multilib for certain different options sets. */
9495 if (strlen (multilib_reuse
) > 0)
9496 p
= concat (p
, multilib_reuse
, NULL
);
9500 /* Ignore newlines. */
9507 /* Get the initial path. */
9514 fatal_error (input_location
, "multilib select %qs %qs is invalid",
9515 multilib_select
, multilib_reuse
);
9519 this_path_len
= p
- this_path
;
9521 /* Check the arguments. */
9528 goto invalid_select
;
9537 while (*p
!= ' ' && *p
!= ';')
9540 goto invalid_select
;
9544 if (*this_arg
!= '!')
9552 /* If this is a default argument, we can just ignore it.
9553 This is true even if this_arg begins with '!'. Beginning
9554 with '!' does not mean that this argument is necessarily
9555 inappropriate for this library: it merely means that
9556 there is a more specific library which uses this
9557 argument. If this argument is a default, we need not
9558 consider that more specific library. */
9559 ok
= used_arg (this_arg
, p
- this_arg
);
9566 if (default_arg (this_arg
, p
- this_arg
))
9575 if (this_path_len
!= 1
9576 || this_path
[0] != '.')
9578 char *new_multilib_dir
= XNEWVEC (char, this_path_len
+ 1);
9581 strncpy (new_multilib_dir
, this_path
, this_path_len
);
9582 new_multilib_dir
[this_path_len
] = '\0';
9583 q
= strchr (new_multilib_dir
, ':');
9586 multilib_dir
= new_multilib_dir
;
9593 const char *q
= this_path
, *end
= this_path
+ this_path_len
;
9595 while (q
< end
&& *q
!= ':')
9599 const char *q2
= q
+ 1, *ml_end
= end
;
9600 char *new_multilib_os_dir
;
9602 while (q2
< end
&& *q2
!= ':')
9606 if (ml_end
- q
== 1)
9607 multilib_os_dir
= xstrdup (".");
9610 new_multilib_os_dir
= XNEWVEC (char, ml_end
- q
);
9611 memcpy (new_multilib_os_dir
, q
+ 1, ml_end
- q
- 1);
9612 new_multilib_os_dir
[ml_end
- q
- 1] = '\0';
9613 multilib_os_dir
= new_multilib_os_dir
;
9616 if (q2
< end
&& *q2
== ':')
9618 char *new_multiarch_dir
= XNEWVEC (char, end
- q2
);
9619 memcpy (new_multiarch_dir
, q2
+ 1, end
- q2
- 1);
9620 new_multiarch_dir
[end
- q2
- 1] = '\0';
9621 multiarch_dir
= new_multiarch_dir
;
9630 if (multilib_dir
== NULL
&& multilib_os_dir
!= NULL
9631 && strcmp (multilib_os_dir
, ".") == 0)
9633 free (CONST_CAST (char *, multilib_os_dir
));
9634 multilib_os_dir
= NULL
;
9636 else if (multilib_dir
!= NULL
&& multilib_os_dir
== NULL
)
9637 multilib_os_dir
= multilib_dir
;
9640 /* Print out the multiple library subdirectory selection
9641 information. This prints out a series of lines. Each line looks
9642 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
9643 required. Only the desired options are printed out, the negative
9644 matches. The options are print without a leading dash. There are
9645 no spaces to make it easy to use the information in the shell.
9646 Each subdirectory is printed only once. This assumes the ordering
9647 generated by the genmultilib script. Also, we leave out ones that match
9651 print_multilib_info (void)
9653 const char *p
= multilib_select
;
9654 const char *last_path
= 0, *this_path
;
9656 unsigned int last_path_len
= 0;
9661 /* Ignore newlines. */
9668 /* Get the initial path. */
9675 fatal_error (input_location
,
9676 "multilib select %qs is invalid", multilib_select
);
9682 /* When --disable-multilib was used but target defines
9683 MULTILIB_OSDIRNAMES, entries starting with .: (and not starting
9684 with .:: for multiarch configurations) are there just to find
9685 multilib_os_dir, so skip them from output. */
9686 if (this_path
[0] == '.' && this_path
[1] == ':' && this_path
[2] != ':')
9689 /* Check for matches with the multilib_exclusions. We don't bother
9690 with the '!' in either list. If any of the exclusion rules match
9691 all of its options with the select rule, we skip it. */
9693 const char *e
= multilib_exclusions
;
9694 const char *this_arg
;
9699 /* Ignore newlines. */
9706 /* Check the arguments. */
9715 fatal_error (input_location
,
9716 "multilib exclusion %qs is invalid",
9717 multilib_exclusions
);
9728 while (*e
!= ' ' && *e
!= ';')
9731 goto invalid_exclusion
;
9739 int len
= e
- this_arg
;
9742 goto invalid_select
;
9746 while (*q
!= ' ' && *q
!= ';')
9749 goto invalid_select
;
9753 if (! strncmp (arg
, this_arg
,
9754 (len
< q
- arg
) ? q
- arg
: len
)
9755 || default_arg (this_arg
, e
- this_arg
))
9785 /* If this is a duplicate, skip it. */
9786 skip
= (last_path
!= 0
9787 && (unsigned int) (p
- this_path
) == last_path_len
9788 && ! filename_ncmp (last_path
, this_path
, last_path_len
));
9790 last_path
= this_path
;
9791 last_path_len
= p
- this_path
;
9794 /* If this directory requires any default arguments, we can skip
9795 it. We will already have printed a directory identical to
9796 this one which does not require that default argument. */
9807 goto invalid_select
;
9814 while (*q
!= ' ' && *q
!= ';')
9817 goto invalid_select
;
9822 && default_arg (arg
, q
- arg
))
9837 for (p1
= last_path
; p1
< p
&& *p1
!= ':'; p1
++)
9848 goto invalid_select
;
9856 use_arg
= *p
!= '!';
9861 while (*p
!= ' ' && *p
!= ';')
9864 goto invalid_select
;
9876 /* If there are extra options, print them now. */
9877 if (multilib_extra
&& *multilib_extra
)
9879 int print_at
= TRUE
;
9882 for (q
= multilib_extra
; *q
!= '\0'; q
++)
9903 /* getenv built-in spec function.
9905 Returns the value of the environment variable given by its first argument,
9906 concatenated with the second argument. If the variable is not defined, a
9907 fatal error is issued unless such undefs are internally allowed, in which
9908 case the variable name prefixed by a '/' is used as the variable value.
9910 The leading '/' allows using the result at a spot where a full path would
9911 normally be expected and when the actual value doesn't really matter since
9912 undef vars are allowed. */
9915 getenv_spec_function (int argc
, const char **argv
)
9918 const char *varname
;
9928 value
= env
.get (varname
);
9930 /* If the variable isn't defined and this is allowed, craft our expected
9931 return value. Assume variable names used in specs strings don't contain
9932 any active spec character so don't need escaping. */
9933 if (!value
&& spec_undefvar_allowed
)
9935 result
= XNEWVAR (char, strlen(varname
) + 2);
9936 sprintf (result
, "/%s", varname
);
9941 fatal_error (input_location
,
9942 "environment variable %qs not defined", varname
);
9944 /* We have to escape every character of the environment variable so
9945 they are not interpreted as active spec characters. A
9946 particularly painful case is when we are reading a variable
9947 holding a windows path complete with \ separators. */
9948 len
= strlen (value
) * 2 + strlen (argv
[1]) + 1;
9949 result
= XNEWVAR (char, len
);
9950 for (ptr
= result
; *value
; ptr
+= 2)
9956 strcpy (ptr
, argv
[1]);
9961 /* if-exists built-in spec function.
9963 Checks to see if the file specified by the absolute pathname in
9964 ARGS exists. Returns that pathname if found.
9966 The usual use for this function is to check for a library file
9967 (whose name has been expanded with %s). */
9970 if_exists_spec_function (int argc
, const char **argv
)
9972 /* Must have only one argument. */
9973 if (argc
== 1 && IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
9979 /* if-exists-else built-in spec function.
9981 This is like if-exists, but takes an additional argument which
9982 is returned if the first argument does not exist. */
9985 if_exists_else_spec_function (int argc
, const char **argv
)
9987 /* Must have exactly two arguments. */
9991 if (IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
9997 /* sanitize built-in spec function.
9999 This returns non-NULL, if sanitizing address, thread or
10000 any of the undefined behavior sanitizers. */
10002 static const char *
10003 sanitize_spec_function (int argc
, const char **argv
)
10008 if (strcmp (argv
[0], "address") == 0)
10009 return (flag_sanitize
& SANITIZE_USER_ADDRESS
) ? "" : NULL
;
10010 if (strcmp (argv
[0], "kernel-address") == 0)
10011 return (flag_sanitize
& SANITIZE_KERNEL_ADDRESS
) ? "" : NULL
;
10012 if (strcmp (argv
[0], "thread") == 0)
10013 return (flag_sanitize
& SANITIZE_THREAD
) ? "" : NULL
;
10014 if (strcmp (argv
[0], "undefined") == 0)
10015 return ((flag_sanitize
10016 & (SANITIZE_UNDEFINED
| SANITIZE_UNDEFINED_NONDEFAULT
))
10017 && !flag_sanitize_undefined_trap_on_error
) ? "" : NULL
;
10018 if (strcmp (argv
[0], "leak") == 0)
10019 return ((flag_sanitize
10020 & (SANITIZE_ADDRESS
| SANITIZE_LEAK
| SANITIZE_THREAD
))
10021 == SANITIZE_LEAK
) ? "" : NULL
;
10025 /* replace-outfile built-in spec function.
10027 This looks for the first argument in the outfiles array's name and
10028 replaces it with the second argument. */
10030 static const char *
10031 replace_outfile_spec_function (int argc
, const char **argv
)
10034 /* Must have exactly two arguments. */
10038 for (i
= 0; i
< n_infiles
; i
++)
10040 if (outfiles
[i
] && !filename_cmp (outfiles
[i
], argv
[0]))
10041 outfiles
[i
] = xstrdup (argv
[1]);
10046 /* remove-outfile built-in spec function.
10048 * This looks for the first argument in the outfiles array's name and
10051 static const char *
10052 remove_outfile_spec_function (int argc
, const char **argv
)
10055 /* Must have exactly one argument. */
10059 for (i
= 0; i
< n_infiles
; i
++)
10061 if (outfiles
[i
] && !filename_cmp (outfiles
[i
], argv
[0]))
10062 outfiles
[i
] = NULL
;
10067 /* Given two version numbers, compares the two numbers.
10068 A version number must match the regular expression
10069 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
10072 compare_version_strings (const char *v1
, const char *v2
)
10077 if (regcomp (&r
, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
10078 REG_EXTENDED
| REG_NOSUB
) != 0)
10080 rresult
= regexec (&r
, v1
, 0, NULL
, 0);
10081 if (rresult
== REG_NOMATCH
)
10082 fatal_error (input_location
, "invalid version number %qs", v1
);
10083 else if (rresult
!= 0)
10085 rresult
= regexec (&r
, v2
, 0, NULL
, 0);
10086 if (rresult
== REG_NOMATCH
)
10087 fatal_error (input_location
, "invalid version number %qs", v2
);
10088 else if (rresult
!= 0)
10091 return strverscmp (v1
, v2
);
10095 /* version_compare built-in spec function.
10097 This takes an argument of the following form:
10099 <comparison-op> <arg1> [<arg2>] <switch> <result>
10101 and produces "result" if the comparison evaluates to true,
10102 and nothing if it doesn't.
10104 The supported <comparison-op> values are:
10106 >= true if switch is a later (or same) version than arg1
10108 < true if switch is an earlier version than arg1
10110 >< true if switch is arg1 or later, and earlier than arg2
10111 <> true if switch is earlier than arg1 or is arg2 or later
10113 If the switch is not present, the condition is false unless
10114 the first character of the <comparison-op> is '!'.
10117 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
10118 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
10120 static const char *
10121 version_compare_spec_function (int argc
, const char **argv
)
10125 const char *switch_value
= NULL
;
10130 fatal_error (input_location
, "too few arguments to %%:version-compare");
10131 if (argv
[0][0] == '\0')
10133 if ((argv
[0][1] == '<' || argv
[0][1] == '>') && argv
[0][0] != '!')
10135 if (argc
!= nargs
+ 3)
10136 fatal_error (input_location
, "too many arguments to %%:version-compare");
10138 switch_len
= strlen (argv
[nargs
+ 1]);
10139 for (i
= 0; i
< n_switches
; i
++)
10140 if (!strncmp (switches
[i
].part1
, argv
[nargs
+ 1], switch_len
)
10141 && check_live_switch (i
, switch_len
))
10142 switch_value
= switches
[i
].part1
+ switch_len
;
10144 if (switch_value
== NULL
)
10145 comp1
= comp2
= -1;
10148 comp1
= compare_version_strings (switch_value
, argv
[1]);
10150 comp2
= compare_version_strings (switch_value
, argv
[2]);
10152 comp2
= -1; /* This value unused. */
10155 switch (argv
[0][0] << 8 | argv
[0][1])
10157 case '>' << 8 | '=':
10158 result
= comp1
>= 0;
10160 case '!' << 8 | '<':
10161 result
= comp1
>= 0 || switch_value
== NULL
;
10164 result
= comp1
< 0;
10166 case '!' << 8 | '>':
10167 result
= comp1
< 0 || switch_value
== NULL
;
10169 case '>' << 8 | '<':
10170 result
= comp1
>= 0 && comp2
< 0;
10172 case '<' << 8 | '>':
10173 result
= comp1
< 0 || comp2
>= 0;
10177 fatal_error (input_location
,
10178 "unknown operator %qs in %%:version-compare", argv
[0]);
10183 return argv
[nargs
+ 2];
10186 /* %:include builtin spec function. This differs from %include in that it
10187 can be nested inside a spec, and thus be conditionalized. It takes
10188 one argument, the filename, and looks for it in the startfile path.
10189 The result is always NULL, i.e. an empty expansion. */
10191 static const char *
10192 include_spec_function (int argc
, const char **argv
)
10199 file
= find_a_file (&startfile_prefixes
, argv
[0], R_OK
, true);
10200 read_specs (file
? file
: argv
[0], false, false);
10205 /* %:find-file spec function. This function replaces its argument by
10206 the file found through find_file, that is the -print-file-name gcc
10208 static const char *
10209 find_file_spec_function (int argc
, const char **argv
)
10216 file
= find_file (argv
[0]);
10221 /* %:find-plugindir spec function. This function replaces its argument
10222 by the -iplugindir=<dir> option. `dir' is found through find_file, that
10223 is the -print-file-name gcc program option. */
10224 static const char *
10225 find_plugindir_spec_function (int argc
, const char **argv ATTRIBUTE_UNUSED
)
10227 const char *option
;
10232 option
= concat ("-iplugindir=", find_file ("plugin"), NULL
);
10237 /* %:print-asm-header spec function. Print a banner to say that the
10238 following output is from the assembler. */
10240 static const char *
10241 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED
,
10242 const char **argv ATTRIBUTE_UNUSED
)
10244 printf (_("Assembler options\n=================\n\n"));
10245 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
10250 /* Get a random number for -frandom-seed */
10252 static unsigned HOST_WIDE_INT
10253 get_random_number (void)
10255 unsigned HOST_WIDE_INT ret
= 0;
10258 fd
= open ("/dev/urandom", O_RDONLY
);
10261 read (fd
, &ret
, sizeof (HOST_WIDE_INT
));
10267 /* Get some more or less random data. */
10268 #ifdef HAVE_GETTIMEOFDAY
10272 gettimeofday (&tv
, NULL
);
10273 ret
= tv
.tv_sec
* 1000 + tv
.tv_usec
/ 1000;
10277 time_t now
= time (NULL
);
10279 if (now
!= (time_t)-1)
10280 ret
= (unsigned) now
;
10284 return ret
^ getpid ();
10287 /* %:compare-debug-dump-opt spec function. Save the last argument,
10288 expected to be the last -fdump-final-insns option, or generate a
10291 static const char *
10292 compare_debug_dump_opt_spec_function (int arg
,
10293 const char **argv ATTRIBUTE_UNUSED
)
10298 static char random_seed
[HOST_BITS_PER_WIDE_INT
/ 4 + 3];
10301 fatal_error (input_location
,
10302 "too many arguments to %%:compare-debug-dump-opt");
10304 do_spec_2 ("%{fdump-final-insns=*:%*}", NULL
);
10305 do_spec_1 (" ", 0, NULL
);
10307 if (argbuf
.length () > 0
10308 && strcmp (argv
[argbuf
.length () - 1], ".") != 0)
10310 if (!compare_debug
)
10313 name
= xstrdup (argv
[argbuf
.length () - 1]);
10318 if (argbuf
.length () > 0)
10319 do_spec_2 ("%B.gkd", NULL
);
10320 else if (!compare_debug
)
10323 do_spec_2 ("%{!save-temps*:%g.gkd}%{save-temps*:%B.gkd}", NULL
);
10325 do_spec_1 (" ", 0, NULL
);
10327 gcc_assert (argbuf
.length () > 0);
10329 name
= xstrdup (argbuf
.last ());
10331 char *arg
= quote_spec (xstrdup (name
));
10332 ret
= concat ("-fdump-final-insns=", arg
, NULL
);
10336 which
= compare_debug
< 0;
10337 debug_check_temp_file
[which
] = name
;
10341 unsigned HOST_WIDE_INT value
= get_random_number ();
10343 sprintf (random_seed
, HOST_WIDE_INT_PRINT_HEX
, value
);
10349 ret
= concat ("%{!frandom-seed=*:-frandom-seed=", random_seed
, "} ",
10360 /* %:compare-debug-self-opt spec function. Expands to the options
10361 that are to be passed in the second compilation of
10364 static const char *
10365 compare_debug_self_opt_spec_function (int arg
,
10366 const char **argv ATTRIBUTE_UNUSED
)
10369 fatal_error (input_location
,
10370 "too many arguments to %%:compare-debug-self-opt");
10372 if (compare_debug
>= 0)
10376 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
10377 %<fdump-final-insns=* -w -S -o %j \
10378 %{!fcompare-debug-second:-fcompare-debug-second} \
10379 ", compare_debug_opt
, NULL
);
10382 /* %:pass-through-libs spec function. Finds all -l options and input
10383 file names in the lib spec passed to it, and makes a list of them
10384 prepended with the plugin option to cause them to be passed through
10385 to the final link after all the new object files have been added. */
10388 pass_through_libs_spec_func (int argc
, const char **argv
)
10390 char *prepended
= xstrdup (" ");
10392 /* Shlemiel the painter's algorithm. Innately horrible, but at least
10393 we know that there will never be more than a handful of strings to
10394 concat, and it's only once per run, so it's not worth optimising. */
10395 for (n
= 0; n
< argc
; n
++)
10397 char *old
= prepended
;
10398 /* Anything that isn't an option is a full path to an output
10399 file; pass it through if it ends in '.a'. Among options,
10401 if (argv
[n
][0] == '-' && argv
[n
][1] == 'l')
10403 const char *lopt
= argv
[n
] + 2;
10404 /* Handle both joined and non-joined -l options. If for any
10405 reason there's a trailing -l with no joined or following
10406 arg just discard it. */
10407 if (!*lopt
&& ++n
>= argc
)
10411 prepended
= concat (prepended
, "-plugin-opt=-pass-through=-l",
10414 else if (!strcmp (".a", argv
[n
] + strlen (argv
[n
]) - 2))
10416 prepended
= concat (prepended
, "-plugin-opt=-pass-through=",
10417 argv
[n
], " ", NULL
);
10419 if (prepended
!= old
)
10426 not_actual_file_p (const char *name
)
10428 return (strcmp (name
, "-") == 0
10429 || strcmp (output_file
, HOST_BIT_BUCKET
) == 0);
10432 /* %:dumps spec function. Take an optional argument that overrides
10433 the default extension for -dumpbase and -dumpbase-ext.
10434 Return -dumpdir, -dumpbase and -dumpbase-ext, if needed. */
10436 dumps_spec_func (int argc
, const char **argv ATTRIBUTE_UNUSED
)
10438 const char *ext
= dumpbase_ext
;
10441 char *args
[3] = { NULL
, NULL
, NULL
};
10444 /* Do not compute a default for -dumpbase-ext when -dumpbase was
10445 given explicitly. */
10446 if (dumpbase
&& *dumpbase
&& !ext
)
10451 /* Do not override the explicitly-specified -dumpbase-ext with
10452 the specs-provided overrider. */
10456 else if (argc
!= 0)
10457 fatal_error (input_location
, "too many arguments for %%:dumps");
10461 p
= quote_spec_arg (xstrdup (dumpdir
));
10462 args
[nargs
++] = concat (" -dumpdir ", p
, NULL
);
10467 ext
= input_basename
+ basename_length
;
10469 /* Use the precomputed outbase, or compute dumpbase from
10470 input_basename, just like %b would. */
10473 if (dumpbase
&& *dumpbase
)
10475 base
= xstrdup (dumpbase
);
10476 p
= base
+ outbase_length
;
10477 gcc_checking_assert (strncmp (base
, outbase
, outbase_length
) == 0);
10478 gcc_checking_assert (strcmp (p
, ext
) == 0);
10480 else if (outbase_length
)
10482 base
= xstrndup (outbase
, outbase_length
);
10487 base
= xstrndup (input_basename
, suffixed_basename_length
);
10488 p
= base
+ basename_length
;
10491 if (compare_debug
< 0 || !p
|| strcmp (p
, ext
) != 0)
10497 if (compare_debug
< 0)
10502 p
= concat (base
, gk
, ext
, NULL
);
10508 base
= quote_spec_arg (base
);
10509 args
[nargs
++] = concat (" -dumpbase ", base
, NULL
);
10514 p
= quote_spec_arg (xstrdup (ext
));
10515 args
[nargs
++] = concat (" -dumpbase-ext ", p
, NULL
);
10519 const char *ret
= concat (args
[0], args
[1], args
[2], NULL
);
10521 free (args
[--nargs
]);
10526 /* Returns "" if ARGV[ARGC - 2] is greater than ARGV[ARGC-1].
10527 Otherwise, return NULL. */
10529 static const char *
10530 greater_than_spec_func (int argc
, const char **argv
)
10537 gcc_assert (argc
>= 2);
10539 long arg
= strtol (argv
[argc
- 2], &converted
, 10);
10540 gcc_assert (converted
!= argv
[argc
- 2]);
10542 long lim
= strtol (argv
[argc
- 1], &converted
, 10);
10543 gcc_assert (converted
!= argv
[argc
- 1]);
10551 /* Returns "" if debug_info_level is greater than ARGV[ARGC-1].
10552 Otherwise, return NULL. */
10554 static const char *
10555 debug_level_greater_than_spec_func (int argc
, const char **argv
)
10560 fatal_error (input_location
,
10561 "wrong number of arguments to %%:debug-level-gt");
10563 long arg
= strtol (argv
[0], &converted
, 10);
10564 gcc_assert (converted
!= argv
[0]);
10566 if (debug_info_level
> arg
)
10573 path_prefix_reset (path_prefix
*prefix
)
10575 struct prefix_list
*iter
, *next
;
10576 iter
= prefix
->plist
;
10580 free (const_cast <char *> (iter
->prefix
));
10585 prefix
->max_len
= 0;
10588 /* The function takes 3 arguments: OPTION name, file name and location
10589 where we search for Fortran modules.
10590 When the FILE is found by find_file, return OPTION=path_to_file. */
10592 static const char *
10593 find_fortran_preinclude_file (int argc
, const char **argv
)
10595 char *result
= NULL
;
10599 struct path_prefix prefixes
= { 0, 0, "preinclude" };
10601 /* Search first for 'finclude' folder location for a header file
10602 installed by the compiler (similar to omp_lib.h). */
10603 add_prefix (&prefixes
, argv
[2], NULL
, 0, 0, 0);
10604 #ifdef TOOL_INCLUDE_DIR
10605 /* Then search: <prefix>/<target>/<include>/finclude */
10606 add_prefix (&prefixes
, TOOL_INCLUDE_DIR
"/finclude/",
10609 #ifdef NATIVE_SYSTEM_HEADER_DIR
10610 /* Then search: <sysroot>/usr/include/finclude/<multilib> */
10611 add_sysrooted_hdrs_prefix (&prefixes
, NATIVE_SYSTEM_HEADER_DIR
"/finclude/",
10615 const char *path
= find_a_file (&include_prefixes
, argv
[1], R_OK
, false);
10617 result
= concat (argv
[0], path
, NULL
);
10620 path
= find_a_file (&prefixes
, argv
[1], R_OK
, false);
10622 result
= concat (argv
[0], path
, NULL
);
10625 path_prefix_reset (&prefixes
);
10629 /* If any character in ORIG fits QUOTE_P (_, P), reallocate the string
10630 so as to precede every one of them with a backslash. Return the
10631 original string or the reallocated one. */
10633 static inline char *
10634 quote_string (char *orig
, bool (*quote_p
)(char, void *), void *p
)
10636 int len
, number_of_space
= 0;
10638 for (len
= 0; orig
[len
]; len
++)
10639 if (quote_p (orig
[len
], p
))
10642 if (number_of_space
)
10644 char *new_spec
= (char *) xmalloc (len
+ number_of_space
+ 1);
10646 for (j
= 0, k
= 0; j
<= len
; j
++, k
++)
10648 if (quote_p (orig
[j
], p
))
10649 new_spec
[k
++] = '\\';
10650 new_spec
[k
] = orig
[j
];
10659 /* Return true iff C is any of the characters convert_white_space
10663 whitespace_to_convert_p (char c
, void *)
10665 return (c
== ' ' || c
== '\t');
10668 /* Insert backslash before spaces in ORIG (usually a file path), to
10669 avoid being broken by spec parser.
10671 This function is needed as do_spec_1 treats white space (' ' and '\t')
10672 as the end of an argument. But in case of -plugin /usr/gcc install/xxx.so,
10673 the file name should be treated as a single argument rather than being
10674 broken into multiple. Solution is to insert '\\' before the space in a
10677 This function converts and only converts all occurrence of ' '
10678 to '\\' + ' ' and '\t' to '\\' + '\t'. For example:
10680 "a b" -> "a\\ \\ b"
10682 "a\\ b" -> "a\\\\ b"
10684 orig: input null-terminating string that was allocated by xalloc. The
10685 memory it points to might be freed in this function. Behavior undefined
10686 if ORIG wasn't xalloced or was freed already at entry.
10688 Return: ORIG if no conversion needed. Otherwise a newly allocated string
10689 that was converted from ORIG. */
10692 convert_white_space (char *orig
)
10694 return quote_string (orig
, whitespace_to_convert_p
, NULL
);
10697 /* Return true iff C matches any of the spec active characters. */
10699 quote_spec_char_p (char c
, void *)
10716 /* Like convert_white_space, but deactivate all active spec chars by
10719 static inline char *
10720 quote_spec (char *orig
)
10722 return quote_string (orig
, quote_spec_char_p
, NULL
);
10725 /* Like quote_spec, but also turn an empty string into the spec for an
10728 static inline char *
10729 quote_spec_arg (char *orig
)
10734 return xstrdup ("%\"");
10737 return quote_spec (orig
);
10740 /* Restore all state within gcc.c to the initial state, so that the driver
10741 code can be safely re-run in-process.
10743 Many const char * variables are referenced by static specs (see
10744 INIT_STATIC_SPEC above). These variables are restored to their default
10745 values by a simple loop over the static specs.
10747 For other variables, we directly restore them all to their initial
10748 values (often implicitly 0).
10750 Free the various obstacks in this file, along with "opts_obstack"
10753 This function also restores any environment variables that were changed. */
10756 driver::finalize ()
10759 diagnostic_finish (global_dc
);
10762 at_file_supplied
= 0;
10763 print_help_list
= 0;
10765 verbose_only_flag
= 0;
10766 print_subprocess_help
= 0;
10768 report_times_to_file
= NULL
;
10769 target_system_root
= DEFAULT_TARGET_SYSTEM_ROOT
;
10770 target_system_root_changed
= 0;
10771 target_sysroot_suffix
= 0;
10772 target_sysroot_hdrs_suffix
= 0;
10773 save_temps_flag
= SAVE_TEMPS_NONE
;
10774 save_temps_overrides_dumpdir
= false;
10775 dumpdir_trailing_dash_added
= false;
10778 free (dumpbase_ext
);
10780 dumpdir
= dumpbase
= dumpbase_ext
= outbase
= NULL
;
10781 dumpdir_length
= outbase_length
= 0;
10782 spec_machine
= DEFAULT_TARGET_MACHINE
;
10783 greatest_status
= 1;
10785 obstack_free (&obstack
, NULL
);
10786 obstack_free (&opts_obstack
, NULL
); /* in opts.c */
10787 obstack_free (&collect_obstack
, NULL
);
10789 link_command_spec
= LINK_COMMAND_SPEC
;
10791 obstack_free (&multilib_obstack
, NULL
);
10793 user_specs_head
= NULL
;
10794 user_specs_tail
= NULL
;
10796 /* Within the "compilers" vec, the fields "suffix" and "spec" were
10797 statically allocated for the default compilers, but dynamically
10798 allocated for additional compilers. Delete them for the latter. */
10799 for (int i
= n_default_compilers
; i
< n_compilers
; i
++)
10801 free (const_cast <char *> (compilers
[i
].suffix
));
10802 free (const_cast <char *> (compilers
[i
].spec
));
10804 XDELETEVEC (compilers
);
10808 linker_options
.truncate (0);
10809 assembler_options
.truncate (0);
10810 preprocessor_options
.truncate (0);
10812 path_prefix_reset (&exec_prefixes
);
10813 path_prefix_reset (&startfile_prefixes
);
10814 path_prefix_reset (&include_prefixes
);
10816 machine_suffix
= 0;
10817 just_machine_suffix
= 0;
10818 gcc_exec_prefix
= 0;
10819 gcc_libexec_prefix
= 0;
10820 md_exec_prefix
= MD_EXEC_PREFIX
;
10821 md_startfile_prefix
= MD_STARTFILE_PREFIX
;
10822 md_startfile_prefix_1
= MD_STARTFILE_PREFIX_1
;
10824 multilib_os_dir
= 0;
10827 /* Free any specs dynamically-allocated by set_spec.
10828 These will be at the head of the list, before the
10829 statically-allocated ones. */
10832 while (specs
!= static_specs
)
10834 spec_list
*next
= specs
->next
;
10835 free (const_cast <char *> (specs
->name
));
10841 for (unsigned i
= 0; i
< ARRAY_SIZE (static_specs
); i
++)
10843 spec_list
*sl
= &static_specs
[i
];
10847 free (const_cast <char *> (*(sl
->ptr_spec
)));
10848 sl
->alloc_p
= false;
10850 *(sl
->ptr_spec
) = sl
->default_ptr
;
10853 extra_specs
= NULL
;
10856 processing_spec_function
= 0;
10864 execution_count
= 0;
10867 temp_filename
= NULL
;
10868 temp_filename_length
= 0;
10869 always_delete_queue
= NULL
;
10870 failure_delete_queue
= NULL
;
10872 XDELETEVEC (switches
);
10875 n_switches_alloc
= 0;
10878 compare_debug_second
= 0;
10879 compare_debug_opt
= NULL
;
10880 for (int i
= 0; i
< 2; i
++)
10882 switches_debug_check
[i
] = NULL
;
10883 n_switches_debug_check
[i
] = 0;
10884 n_switches_alloc_debug_check
[i
] = 0;
10885 debug_check_temp_file
[i
] = NULL
;
10888 XDELETEVEC (infiles
);
10891 n_infiles_alloc
= 0;
10893 combine_inputs
= false;
10894 added_libraries
= 0;
10895 XDELETEVEC (outfiles
);
10898 last_language_n_infiles
= 0;
10899 gcc_input_filename
= NULL
;
10900 input_file_number
= 0;
10901 input_filename_length
= 0;
10902 basename_length
= 0;
10903 suffixed_basename_length
= 0;
10904 input_basename
= NULL
;
10905 input_suffix
= NULL
;
10906 /* We don't need to purge "input_stat", just to unset "input_stat_set". */
10907 input_stat_set
= 0;
10908 input_file_compiler
= NULL
;
10910 delete_this_arg
= 0;
10911 this_is_output_file
= 0;
10912 this_is_library_file
= 0;
10913 this_is_linker_script
= 0;
10914 input_from_pipe
= 0;
10915 suffix_subst
= NULL
;
10920 used_arg
.finalize ();
10924 Targets can provide configure-time default options in
10925 OPTION_DEFAULT_SPECS. The jit needs to access these, but
10926 they are expressed in the spec language.
10928 Run just enough of the driver to be able to expand these
10929 specs, and then call the callback CB on each
10930 such option. The options strings are *without* a leading
10931 '-' character e.g. ("march=x86-64"). Finally, clean up. */
10934 driver_get_configure_time_options (void (*cb
) (const char *option
,
10940 obstack_init (&obstack
);
10941 init_opts_obstack ();
10944 for (i
= 0; i
< ARRAY_SIZE (option_default_specs
); i
++)
10945 do_option_spec (option_default_specs
[i
].name
,
10946 option_default_specs
[i
].spec
);
10948 for (i
= 0; (int) i
< n_switches
; i
++)
10950 gcc_assert (switches
[i
].part1
);
10951 (*cb
) (switches
[i
].part1
, user_data
);
10954 obstack_free (&opts_obstack
, NULL
);
10955 obstack_free (&obstack
, NULL
);