1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987-2015 Free Software Foundation, Inc.
4 This file is part of GCC.
6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 3, or (at your option) any later
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING3. If not see
18 <http://www.gnu.org/licenses/>. */
20 /* This program is the user interface to the C compiler and possibly to
21 other compilers. It is used because compilation is a complicated procedure
22 which involves running several programs and passing temporary files between
23 them, forwarding the users switches to those programs selectively,
24 and deleting the temporary files at the end.
26 CC recognizes how to compile each input file by suffixes in the file names.
27 Once it knows which kind of compilation to perform, the procedure for
28 compilation is specified by a string called a "spec". */
32 #include "coretypes.h"
33 #include "multilib.h" /* before tm.h */
40 #include "diagnostic.h"
45 #include "filenames.h"
47 /* By default there is no special suffix for target executables. */
48 /* FIXME: when autoconf is fixed, remove the host check - dj */
49 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
50 #define HAVE_TARGET_EXECUTABLE_SUFFIX
53 /* By default there is no special suffix for host executables. */
54 #ifdef HOST_EXECUTABLE_SUFFIX
55 #define HAVE_HOST_EXECUTABLE_SUFFIX
57 #define HOST_EXECUTABLE_SUFFIX ""
60 /* By default, the suffix for target object files is ".o". */
61 #ifdef TARGET_OBJECT_SUFFIX
62 #define HAVE_TARGET_OBJECT_SUFFIX
64 #define TARGET_OBJECT_SUFFIX ".o"
67 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
69 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
70 #ifndef LIBRARY_PATH_ENV
71 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
74 /* If a stage of compilation returns an exit status >= 1,
75 compilation of that file ceases. */
77 #define MIN_FATAL_STATUS 1
79 /* Flag set by cppspec.c to 1. */
82 /* Flag set to nonzero if an @file argument has been supplied to gcc. */
83 static bool at_file_supplied;
85 /* Definition of string containing the arguments given to configure. */
86 #include "configargs.h"
88 /* Flag saying to print the command line options understood by gcc and its
91 static int print_help_list;
93 /* Flag saying to print the version of gcc and its sub-processes. */
95 static int print_version;
97 /* Flag indicating whether we should ONLY print the command and
98 arguments (like verbose_flag) without executing the command.
99 Displayed arguments are quoted so that the generated command
100 line is suitable for execution. This is intended for use in
101 shell scripts to capture the driver-generated command line. */
102 static int verbose_only_flag;
104 /* Flag indicating how to print command line options of sub-processes. */
106 static int print_subprocess_help;
108 /* Linker suffix passed to -fuse-ld=... */
109 static const char *use_ld;
111 /* Whether we should report subprocess execution times to a file. */
113 FILE *report_times_to_file = NULL;
115 /* Nonzero means place this string before uses of /, so that include
116 and library files can be found in an alternate location. */
118 #ifdef TARGET_SYSTEM_ROOT
119 static const char *target_system_root = TARGET_SYSTEM_ROOT;
121 static const char *target_system_root = 0;
124 /* Nonzero means pass the updated target_system_root to the compiler. */
126 static int target_system_root_changed;
128 /* Nonzero means append this string to target_system_root. */
130 static const char *target_sysroot_suffix = 0;
132 /* Nonzero means append this string to target_system_root for headers. */
134 static const char *target_sysroot_hdrs_suffix = 0;
136 /* Nonzero means write "temp" files in source directory
137 and use the source file's name in them, and don't delete them. */
139 static enum save_temps {
140 SAVE_TEMPS_NONE, /* no -save-temps */
141 SAVE_TEMPS_CWD, /* -save-temps in current directory */
142 SAVE_TEMPS_OBJ /* -save-temps in object directory */
145 /* Output file to use to get the object directory for -save-temps=obj */
146 static char *save_temps_prefix = 0;
147 static size_t save_temps_length = 0;
149 /* The compiler version. */
151 static const char *compiler_version;
153 /* The target version. */
155 static const char *const spec_version = DEFAULT_TARGET_VERSION;
157 /* The target machine. */
159 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
160 static const char *spec_host_machine = DEFAULT_REAL_TARGET_MACHINE;
162 /* List of offload targets. */
164 static char *offload_targets = NULL;
166 /* Nonzero if cross-compiling.
167 When -b is used, the value comes from the `specs' file. */
169 #ifdef CROSS_DIRECTORY_STRUCTURE
170 static const char *cross_compile = "1";
172 static const char *cross_compile = "0";
175 /* Greatest exit code of sub-processes that has been encountered up to
177 static int greatest_status = 1;
179 /* This is the obstack which we use to allocate many strings. */
181 static struct obstack obstack;
183 /* This is the obstack to build an environment variable to pass to
184 collect2 that describes all of the relevant switches of what to
185 pass the compiler in building the list of pointers to constructors
188 static struct obstack collect_obstack;
190 /* Forward declaration for prototypes. */
194 static void init_spec (void);
195 static void store_arg (const char *, int, int);
196 static void insert_wrapper (const char *);
197 static char *load_specs (const char *);
198 static void read_specs (const char *, bool, bool);
199 static void set_spec (const char *, const char *, bool);
200 static struct compiler *lookup_compiler (const char *, size_t, const char *);
201 static char *build_search_list (const struct path_prefix *, const char *,
203 static void xputenv (const char *);
204 static void putenv_from_prefixes (const struct path_prefix *, const char *,
206 static int access_check (const char *, int);
207 static char *find_a_file (const struct path_prefix *, const char *, int, bool);
208 static void add_prefix (struct path_prefix *, const char *, const char *,
210 static void add_sysrooted_prefix (struct path_prefix *, const char *,
211 const char *, int, int, int);
212 static char *skip_whitespace (char *);
213 static void delete_if_ordinary (const char *);
214 static void delete_temp_files (void);
215 static void delete_failure_queue (void);
216 static void clear_failure_queue (void);
217 static int check_live_switch (int, int);
218 static const char *handle_braces (const char *);
219 static inline bool input_suffix_matches (const char *, const char *);
220 static inline bool switch_matches (const char *, const char *, int);
221 static inline void mark_matching_switches (const char *, const char *, int);
222 static inline void process_marked_switches (void);
223 static const char *process_brace_body (const char *, const char *, const char *, int, int);
224 static const struct spec_function *lookup_spec_function (const char *);
225 static const char *eval_spec_function (const char *, const char *);
226 static const char *handle_spec_function (const char *, bool *);
227 static char *save_string (const char *, int);
228 static void set_collect_gcc_options (void);
229 static int do_spec_1 (const char *, int, const char *);
230 static int do_spec_2 (const char *);
231 static void do_option_spec (const char *, const char *);
232 static void do_self_spec (const char *);
233 static const char *find_file (const char *);
234 static int is_directory (const char *, bool);
235 static const char *validate_switches (const char *, bool);
236 static void validate_all_switches (void);
237 static inline void validate_switches_from_spec (const char *, bool);
238 static void give_switch (int, int);
239 static int used_arg (const char *, int);
240 static int default_arg (const char *, int);
241 static void set_multilib_dir (void);
242 static void print_multilib_info (void);
243 static void perror_with_name (const char *);
244 static void display_help (void);
245 static void add_preprocessor_option (const char *, int);
246 static void add_assembler_option (const char *, int);
247 static void add_linker_option (const char *, int);
248 static void process_command (unsigned int, struct cl_decoded_option *);
249 static int execute (void);
250 static void alloc_args (void);
251 static void clear_args (void);
252 static void fatal_signal (int);
253 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
254 static void init_gcc_specs (struct obstack *, const char *, const char *,
257 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
258 static const char *convert_filename (const char *, int, int);
261 static void try_generate_repro (const char **argv);
262 static const char *getenv_spec_function (int, const char **);
263 static const char *if_exists_spec_function (int, const char **);
264 static const char *if_exists_else_spec_function (int, const char **);
265 static const char *sanitize_spec_function (int, const char **);
266 static const char *replace_outfile_spec_function (int, const char **);
267 static const char *remove_outfile_spec_function (int, const char **);
268 static const char *version_compare_spec_function (int, const char **);
269 static const char *include_spec_function (int, const char **);
270 static const char *find_file_spec_function (int, const char **);
271 static const char *find_plugindir_spec_function (int, const char **);
272 static const char *print_asm_header_spec_function (int, const char **);
273 static const char *compare_debug_dump_opt_spec_function (int, const char **);
274 static const char *compare_debug_self_opt_spec_function (int, const char **);
275 static const char *compare_debug_auxbase_opt_spec_function (int, const char **);
276 static const char *pass_through_libs_spec_func (int, const char **);
277 static const char *replace_extension_spec_func (int, const char **);
278 static char *convert_white_space (char *);
280 /* The Specs Language
282 Specs are strings containing lines, each of which (if not blank)
283 is made up of a program name, and arguments separated by spaces.
284 The program name must be exact and start from root, since no path
285 is searched and it is unreliable to depend on the current working directory.
286 Redirection of input or output is not supported; the subprograms must
287 accept filenames saying what files to read and write.
289 In addition, the specs can contain %-sequences to substitute variable text
290 or for conditional text. Here is a table of all defined %-sequences.
291 Note that spaces are not generated automatically around the results of
292 expanding these sequences; therefore, you can concatenate them together
293 or with constant text in a single argument.
295 %% substitute one % into the program name or argument.
296 %i substitute the name of the input file being processed.
297 %b substitute the basename of the input file being processed.
298 This is the substring up to (and not including) the last period
299 and not including the directory unless -save-temps was specified
300 to put temporaries in a different location.
301 %B same as %b, but include the file suffix (text after the last period).
303 substitute a file name that has suffix SUFFIX and is chosen
304 once per compilation, and mark the argument a la %d. To reduce
305 exposure to denial-of-service attacks, the file name is now
306 chosen in a way that is hard to predict even when previously
307 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
308 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
309 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
310 had been pre-processed. Previously, %g was simply substituted
311 with a file name chosen once per compilation, without regard
312 to any appended suffix (which was therefore treated just like
313 ordinary text), making such attacks more likely to succeed.
315 like %g, but if -pipe is in effect, expands simply to "-".
317 like %g, but if -pipe is in effect, expands to nothing. (We have both
318 %| and %m to accommodate differences between system assemblers; see
319 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
321 like %g, but generates a new temporary file name even if %uSUFFIX
324 substitutes the last file name generated with %uSUFFIX, generating a
325 new one if there is no such last file name. In the absence of any
326 %uSUFFIX, this is just like %gSUFFIX, except they don't share
327 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
328 would involve the generation of two distinct file names, one
329 for each `%g.s' and another for each `%U.s'. Previously, %U was
330 simply substituted with a file name chosen for the previous %u,
331 without regard to any appended suffix.
333 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
334 writable, and if save-temps is off; otherwise, substitute the name
335 of a temporary file, just like %u. This temporary file is not
336 meant for communication between processes, but rather as a junk
339 substitutes .SUFFIX for the suffixes of a matched switch's args when
340 it is subsequently output with %*. SUFFIX is terminated by the next
342 %d marks the argument containing or following the %d as a
343 temporary file name, so that that file will be deleted if GCC exits
344 successfully. Unlike %g, this contributes no text to the argument.
345 %w marks the argument containing or following the %w as the
346 "output file" of this compilation. This puts the argument
347 into the sequence of arguments that %o will substitute later.
348 %V indicates that this compilation produces no "output file".
350 like %{...} but mark last argument supplied within
351 as a file to be deleted on failure.
352 %o substitutes the names of all the output files, with spaces
353 automatically placed around them. You should write spaces
354 around the %o as well or the results are undefined.
355 %o is for use in the specs for running the linker.
356 Input files whose names have no recognized suffix are not compiled
357 at all, but they are included among the output files, so they will
359 %O substitutes the suffix for object files. Note that this is
360 handled specially when it immediately follows %g, %u, or %U
361 (with or without a suffix argument) because of the need for
362 those to form complete file names. The handling is such that
363 %O is treated exactly as if it had already been substituted,
364 except that %g, %u, and %U do not currently support additional
365 SUFFIX characters following %O as they would following, for
367 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
368 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
369 and -B options) and -imultilib as necessary.
370 %s current argument is the name of a library or startup file of some sort.
371 Search for that file in a standard list of directories
372 and substitute the full name found.
373 %eSTR Print STR as an error message. STR is terminated by a newline.
374 Use this when inconsistent options are detected.
375 %nSTR Print STR as a notice. STR is terminated by a newline.
376 %x{OPTION} Accumulate an option for %X.
377 %X Output the accumulated linker options specified by compilations.
378 %Y Output the accumulated assembler options specified by compilations.
379 %Z Output the accumulated preprocessor options specified by compilations.
380 %a process ASM_SPEC as a spec.
381 This allows config.h to specify part of the spec for running as.
382 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
383 used here. This can be used to run a post-processor after the
384 assembler has done its job.
385 %D Dump out a -L option for each directory in startfile_prefixes.
386 If multilib_dir is set, extra entries are generated with it affixed.
387 %l process LINK_SPEC as a spec.
388 %L process LIB_SPEC as a spec.
389 %M Output multilib_os_dir.
390 %G process LIBGCC_SPEC as a spec.
391 %R Output the concatenation of target_system_root and
392 target_sysroot_suffix.
393 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
394 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
395 %C process CPP_SPEC as a spec.
396 %1 process CC1_SPEC as a spec.
397 %2 process CC1PLUS_SPEC as a spec.
398 %* substitute the variable part of a matched option. (See below.)
399 Note that each comma in the substituted string is replaced by
400 a single space. A space is appended after the last substition
401 unless there is more text in current sequence.
402 %<S remove all occurrences of -S from the command line.
403 Note - this command is position dependent. % commands in the
404 spec string before this one will see -S, % commands in the
405 spec string after this one will not.
406 %>S Similar to "%<S", but keep it in the GCC command line.
407 %<S* remove all occurrences of all switches beginning with -S from the
410 Call the named function FUNCTION, passing it ARGS. ARGS is
411 first processed as a nested spec string, then split into an
412 argument vector in the usual fashion. The function returns
413 a string which is processed as if it had appeared literally
414 as part of the current spec.
415 %{S} substitutes the -S switch, if that switch was given to GCC.
416 If that switch was not specified, this substitutes nothing.
417 Here S is a metasyntactic variable.
418 %{S*} substitutes all the switches specified to GCC whose names start
419 with -S. This is used for -o, -I, etc; switches that take
420 arguments. GCC considers `-o foo' as being one switch whose
421 name starts with `o'. %{o*} would substitute this text,
422 including the space; thus, two arguments would be generated.
423 %{S*&T*} likewise, but preserve order of S and T options (the order
424 of S and T in the spec is not significant). Can be any number
425 of ampersand-separated variables; for each the wild card is
426 optional. Useful for CPP as %{D*&U*&A*}.
428 %{S:X} substitutes X, if the -S switch was given to GCC.
429 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
430 %{S*:X} substitutes X if one or more switches whose names start
431 with -S was given to GCC. Normally X is substituted only
432 once, no matter how many such switches appeared. However,
433 if %* appears somewhere in X, then X will be substituted
434 once for each matching switch, with the %* replaced by the
435 part of that switch that matched the '*'. A space will be
436 appended after the last substition unless there is more
437 text in current sequence.
438 %{.S:X} substitutes X, if processing a file with suffix S.
439 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
440 %{,S:X} substitutes X, if processing a file which will use spec S.
441 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
443 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
444 combined with '!', '.', ',', and '*' as above binding stronger
446 If %* appears in X, all of the alternatives must be starred, and
447 only the first matching alternative is substituted.
448 %{%:function(args):X}
449 Call function named FUNCTION with args ARGS. If the function
450 returns non-NULL, then X is substituted, if it returns
451 NULL, it isn't substituted.
452 %{S:X; if S was given to GCC, substitutes X;
453 T:Y; else if T was given to GCC, substitutes Y;
454 :D} else substitutes D. There can be as many clauses as you need.
455 This may be combined with '.', '!', ',', '|', and '*' as above.
457 %(Spec) processes a specification defined in a specs file as *Spec:
459 The conditional text X in a %{S:X} or similar construct may contain
460 other nested % constructs or spaces, or even newlines. They are
461 processed as usual, as described above. Trailing white space in X is
462 ignored. White space may also appear anywhere on the left side of the
463 colon in these constructs, except between . or * and the corresponding
466 The -O, -f, -g, -m, and -W switches are handled specifically in these
467 constructs. If another value of -O or the negated form of a -f, -m, or
468 -W switch is found later in the command line, the earlier switch
469 value is ignored, except with {S*} where S is just one letter; this
470 passes all matching options.
472 The character | at the beginning of the predicate text is used to indicate
473 that a command should be piped to the following command, but only if -pipe
476 Note that it is built into GCC which switches take arguments and which
477 do not. You might think it would be useful to generalize this to
478 allow each compiler's spec to say which switches take arguments. But
479 this cannot be done in a consistent fashion. GCC cannot even decide
480 which input files have been specified without knowing which switches
481 take arguments, and it must know which input files to compile in order
482 to tell which compilers to run.
484 GCC also knows implicitly that arguments starting in `-l' are to be
485 treated as compiler output files, and passed to the linker in their
486 proper position among the other output files. */
488 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
490 /* config.h can define ASM_SPEC to provide extra args to the assembler
491 or extra switch-translations. */
496 /* config.h can define ASM_FINAL_SPEC to run a post processor after
497 the assembler has run. */
498 #ifndef ASM_FINAL_SPEC
499 #define ASM_FINAL_SPEC \
501 objcopy --extract-dwo \
502 %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \
503 %{c:%{o*:%:replace-extension(%{o*:%*} .dwo)}%{!o*:%b.dwo}}%{!c:%b.dwo} \n\
504 objcopy --strip-dwo \
505 %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \
509 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
510 or extra switch-translations. */
515 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
516 or extra switch-translations. */
521 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
522 or extra switch-translations. */
524 #define CC1PLUS_SPEC ""
527 /* config.h can define LINK_SPEC to provide extra args to the linker
528 or extra switch-translations. */
533 /* config.h can define LIB_SPEC to override the default libraries. */
535 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
538 /* When using -fsplit-stack we need to wrap pthread_create, in order
539 to initialize the stack guard. We always use wrapping, rather than
540 shared library ordering, and we keep the wrapper function in
541 libgcc. This is not yet a real spec, though it could become one;
542 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping
543 only works with GNU ld and gold. */
544 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}"
547 #define STATIC_LIBASAN_LIBS \
548 " %{static-libasan:%:include(libsanitizer.spec)%(link_libasan)}"
549 #ifdef LIBASAN_EARLY_SPEC
550 #define LIBASAN_SPEC STATIC_LIBASAN_LIBS
551 #elif defined(HAVE_LD_STATIC_DYNAMIC)
552 #define LIBASAN_SPEC "%{static-libasan:" LD_STATIC_OPTION \
553 "} -lasan %{static-libasan:" LD_DYNAMIC_OPTION "}" \
556 #define LIBASAN_SPEC "-lasan" STATIC_LIBASAN_LIBS
560 #ifndef LIBASAN_EARLY_SPEC
561 #define LIBASAN_EARLY_SPEC ""
565 #define STATIC_LIBTSAN_LIBS \
566 " %{static-libtsan:%:include(libsanitizer.spec)%(link_libtsan)}"
567 #ifdef LIBTSAN_EARLY_SPEC
568 #define LIBTSAN_SPEC STATIC_LIBTSAN_LIBS
569 #elif defined(HAVE_LD_STATIC_DYNAMIC)
570 #define LIBTSAN_SPEC "%{static-libtsan:" LD_STATIC_OPTION \
571 "} -ltsan %{static-libtsan:" LD_DYNAMIC_OPTION "}" \
574 #define LIBTSAN_SPEC "-ltsan" STATIC_LIBTSAN_LIBS
578 #ifndef LIBTSAN_EARLY_SPEC
579 #define LIBTSAN_EARLY_SPEC ""
583 #define STATIC_LIBLSAN_LIBS \
584 " %{static-liblsan:%:include(libsanitizer.spec)%(link_liblsan)}"
585 #ifdef LIBLSAN_EARLY_SPEC
586 #define LIBLSAN_SPEC STATIC_LIBLSAN_LIBS
587 #elif defined(HAVE_LD_STATIC_DYNAMIC)
588 #define LIBLSAN_SPEC "%{static-liblsan:" LD_STATIC_OPTION \
589 "} -llsan %{static-liblsan:" LD_DYNAMIC_OPTION "}" \
592 #define LIBLSAN_SPEC "-llsan" STATIC_LIBLSAN_LIBS
596 #ifndef LIBLSAN_EARLY_SPEC
597 #define LIBLSAN_EARLY_SPEC ""
600 #ifndef LIBUBSAN_SPEC
601 #define STATIC_LIBUBSAN_LIBS \
602 " %{static-libubsan:%:include(libsanitizer.spec)%(link_libubsan)}"
603 #ifdef HAVE_LD_STATIC_DYNAMIC
604 #define LIBUBSAN_SPEC "%{static-libubsan:" LD_STATIC_OPTION \
605 "} -lubsan %{static-libubsan:" LD_DYNAMIC_OPTION "}" \
608 #define LIBUBSAN_SPEC "-lubsan" STATIC_LIBUBSAN_LIBS
612 /* Linker options for compressed debug sections. */
613 #if HAVE_LD_COMPRESS_DEBUG == 0
614 /* No linker support. */
615 #define LINK_COMPRESS_DEBUG_SPEC \
616 " %{gz*:%e-gz is not supported in this configuration} "
617 #elif HAVE_LD_COMPRESS_DEBUG == 1
618 /* GNU style on input, GNU ld options. Reject, not useful. */
619 #define LINK_COMPRESS_DEBUG_SPEC \
620 " %{gz*:%e-gz is not supported in this configuration} "
621 #elif HAVE_LD_COMPRESS_DEBUG == 2
622 /* GNU style, GNU gold options. */
623 #define LINK_COMPRESS_DEBUG_SPEC \
624 " %{gz|gz=zlib-gnu:" LD_COMPRESS_DEBUG_OPTION "=zlib}" \
625 " %{gz=none:" LD_COMPRESS_DEBUG_OPTION "=none}" \
626 " %{gz=zlib:%e-gz=zlib is not supported in this configuration} "
627 #elif HAVE_LD_COMPRESS_DEBUG == 3
628 /* ELF gABI style. */
629 #define LINK_COMPRESS_DEBUG_SPEC \
630 " %{gz|gz=zlib:" LD_COMPRESS_DEBUG_OPTION "=zlib}" \
631 " %{gz=none:" LD_COMPRESS_DEBUG_OPTION "=none}" \
632 " %{gz=zlib-gnu:" LD_COMPRESS_DEBUG_OPTION "=zlib-gnu} "
634 #error Unknown value for HAVE_LD_COMPRESS_DEBUG.
637 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
640 #if defined(REAL_LIBGCC_SPEC)
641 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
642 #elif defined(LINK_LIBGCC_SPECIAL_1)
643 /* Have gcc do the search for libgcc.a. */
644 #define LIBGCC_SPEC "libgcc.a%s"
646 #define LIBGCC_SPEC "-lgcc"
650 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
651 #ifndef STARTFILE_SPEC
652 #define STARTFILE_SPEC \
653 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
656 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
658 #define ENDFILE_SPEC ""
662 #define LINKER_NAME "collect2"
665 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
666 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
671 /* Assembler options for compressed debug sections. */
672 #if HAVE_LD_COMPRESS_DEBUG < 2
673 /* Reject if the linker cannot write compressed debug sections. */
674 #define ASM_COMPRESS_DEBUG_SPEC \
675 " %{gz*:%e-gz is not supported in this configuration} "
676 #else /* HAVE_LD_COMPRESS_DEBUG >= 2 */
677 #if HAVE_AS_COMPRESS_DEBUG == 0
678 /* No assembler support. Ignore silently. */
679 #define ASM_COMPRESS_DEBUG_SPEC \
681 #elif HAVE_AS_COMPRESS_DEBUG == 1
682 /* GNU style, GNU as options. */
683 #define ASM_COMPRESS_DEBUG_SPEC \
684 " %{gz|gz=zlib-gnu:" AS_COMPRESS_DEBUG_OPTION "}" \
685 " %{gz=none:" AS_NO_COMPRESS_DEBUG_OPTION "}" \
686 " %{gz=zlib:%e-gz=zlib is not supported in this configuration} "
687 #elif HAVE_AS_COMPRESS_DEBUG == 2
688 /* ELF gABI style. */
689 #define ASM_COMPRESS_DEBUG_SPEC \
690 " %{gz|gz=zlib:" AS_COMPRESS_DEBUG_OPTION "=zlib}" \
691 " %{gz=none:" AS_COMPRESS_DEBUG_OPTION "=none}" \
692 " %{gz=zlib-gnu:" AS_COMPRESS_DEBUG_OPTION "=zlib-gnu} "
694 #error Unknown value for HAVE_AS_COMPRESS_DEBUG.
696 #endif /* HAVE_LD_COMPRESS_DEBUG >= 2 */
698 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
700 #ifndef ASM_DEBUG_SPEC
701 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
702 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
703 # define ASM_DEBUG_SPEC \
704 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
705 ? "%{!g0:%{gdwarf*:--gdwarf2}%{!gdwarf*:%{g*:--gstabs}}}" ASM_MAP \
706 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
708 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
709 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
711 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
712 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
716 #ifndef ASM_DEBUG_SPEC
717 # define ASM_DEBUG_SPEC ""
720 /* Here is the spec for running the linker, after compiling all files. */
722 /* This is overridable by the target in case they need to specify the
723 -lgcc and -lc order specially, yet not require them to override all
724 of LINK_COMMAND_SPEC. */
725 #ifndef LINK_GCC_C_SEQUENCE_SPEC
726 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
729 #ifndef LINK_SSP_SPEC
730 #ifdef TARGET_LIBC_PROVIDES_SSP
731 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
732 "|fstack-protector-strong|fstack-protector-explicit:}"
734 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
735 "|fstack-protector-strong|fstack-protector-explicit" \
736 ":-lssp_nonshared -lssp}"
740 #ifndef LINK_PIE_SPEC
742 #define LINK_PIE_SPEC "%{pie:-pie} "
744 #define LINK_PIE_SPEC "%{pie:} "
748 #ifndef LINK_BUILDID_SPEC
749 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
750 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
754 /* Conditional to test whether the LTO plugin is used or not.
755 FIXME: For slim LTO we will need to enable plugin unconditionally. This
756 still cause problems with PLUGIN_LD != LD and when plugin is built but
757 not useable. For GCC 4.6 we don't support slim LTO and thus we can enable
758 plugin only when LTO is enabled. We still honor explicit
759 -fuse-linker-plugin if the linker used understands -plugin. */
761 /* The linker has some plugin support. */
762 #if HAVE_LTO_PLUGIN > 0
763 /* The linker used has full plugin support, use LTO plugin by default. */
764 #if HAVE_LTO_PLUGIN == 2
765 #define PLUGIN_COND "!fno-use-linker-plugin:%{!fno-lto"
766 #define PLUGIN_COND_CLOSE "}"
768 /* The linker used has limited plugin support, use LTO plugin with explicit
769 -fuse-linker-plugin. */
770 #define PLUGIN_COND "fuse-linker-plugin"
771 #define PLUGIN_COND_CLOSE ""
773 #define LINK_PLUGIN_SPEC \
775 -plugin %(linker_plugin_file) \
776 -plugin-opt=%(lto_wrapper) \
777 -plugin-opt=-fresolution=%u.res \
778 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
781 /* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */
782 #define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\
783 %e-fuse-linker-plugin is not supported in this configuration}"
786 /* Linker command line options for -fsanitize= early on the command line. */
787 #ifndef SANITIZER_EARLY_SPEC
788 #define SANITIZER_EARLY_SPEC "\
789 %{!nostdlib:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_EARLY_SPEC "} \
790 %{%:sanitize(thread):" LIBTSAN_EARLY_SPEC "} \
791 %{%:sanitize(leak):" LIBLSAN_EARLY_SPEC "}}}"
794 /* Linker command line options for -fsanitize= late on the command line. */
795 #ifndef SANITIZER_SPEC
796 #define SANITIZER_SPEC "\
797 %{!nostdlib:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_SPEC "\
798 %{static:%ecannot specify -static with -fsanitize=address}}\
799 %{%:sanitize(thread):" LIBTSAN_SPEC "\
800 %{static:%ecannot specify -static with -fsanitize=thread}}\
801 %{%:sanitize(undefined):" LIBUBSAN_SPEC "}\
802 %{%:sanitize(leak):" LIBLSAN_SPEC "}}}"
805 /* This is the spec to use, once the code for creating the vtable
806 verification runtime library, libvtv.so, has been created. Currently
807 the vtable verification runtime functions are in libstdc++, so we use
808 the spec just below this one. */
809 #ifndef VTABLE_VERIFICATION_SPEC
810 #define VTABLE_VERIFICATION_SPEC "\
811 %{!nostdlib:%{fvtable-verify=std: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}\
812 %{fvtable-verify=preinit: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}}"
815 /* -u* was put back because both BSD and SysV seem to support it. */
816 /* %{static:} simply prevents an error message if the target machine
817 doesn't handle -static. */
818 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
819 scripts which exist in user specified directories, or in standard
821 /* We pass any -flto flags on to the linker, which is expected
822 to understand them. In practice, this means it had better be collect2. */
823 /* %{e*} includes -export-dynamic; see comment in common.opt. */
824 #ifndef LINK_COMMAND_SPEC
825 #define LINK_COMMAND_SPEC "\
826 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
829 "%{flto|flto=*:%<fcompare-debug*} \
830 %{flto} %{fno-lto} %{flto=*} %l " LINK_PIE_SPEC \
831 "%{fuse-ld=*:-fuse-ld=%*} " LINK_COMPRESS_DEBUG_SPEC \
832 "%X %{o*} %{e*} %{N} %{n} %{r}\
833 %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}} " VTABLE_VERIFICATION_SPEC " \
834 %{static:} %{L*} %(mfwrap) %(link_libgcc) " SANITIZER_EARLY_SPEC " %o\
835 %{fopenacc|fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
836 %{fcilkplus:%:include(libcilkrts.spec)%(link_cilkrts)}\
837 %{fgnu-tm:%:include(libitm.spec)%(link_itm)}\
838 %(mflib) " STACK_SPLIT_SPEC "\
839 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} " SANITIZER_SPEC " \
840 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
841 %{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}"
844 #ifndef LINK_LIBGCC_SPEC
845 /* Generate -L options for startfile prefix list. */
846 # define LINK_LIBGCC_SPEC "%D"
849 #ifndef STARTFILE_PREFIX_SPEC
850 # define STARTFILE_PREFIX_SPEC ""
854 # define SYSROOT_SPEC "--sysroot=%R"
857 #ifndef SYSROOT_SUFFIX_SPEC
858 # define SYSROOT_SUFFIX_SPEC ""
861 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
862 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
865 static const char *asm_debug = ASM_DEBUG_SPEC;
866 static const char *cpp_spec = CPP_SPEC;
867 static const char *cc1_spec = CC1_SPEC;
868 static const char *cc1plus_spec = CC1PLUS_SPEC;
869 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
870 static const char *link_ssp_spec = LINK_SSP_SPEC;
871 static const char *asm_spec = ASM_SPEC;
872 static const char *asm_final_spec = ASM_FINAL_SPEC;
873 static const char *link_spec = LINK_SPEC;
874 static const char *lib_spec = LIB_SPEC;
875 static const char *link_gomp_spec = "";
876 static const char *libgcc_spec = LIBGCC_SPEC;
877 static const char *endfile_spec = ENDFILE_SPEC;
878 static const char *startfile_spec = STARTFILE_SPEC;
879 static const char *linker_name_spec = LINKER_NAME;
880 static const char *linker_plugin_file_spec = "";
881 static const char *lto_wrapper_spec = "";
882 static const char *lto_gcc_spec = "";
883 static const char *link_command_spec = LINK_COMMAND_SPEC;
884 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
885 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
886 static const char *sysroot_spec = SYSROOT_SPEC;
887 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
888 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
889 static const char *self_spec = "";
891 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
892 There should be no need to override these in target dependent files,
893 but we need to copy them to the specs file so that newer versions
894 of the GCC driver can correctly drive older tool chains with the
895 appropriate -B options. */
897 /* When cpplib handles traditional preprocessing, get rid of this, and
898 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
899 that we default the front end language better. */
900 static const char *trad_capable_cpp =
901 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}";
903 /* We don't wrap .d files in %W{} since a missing .d file, and
904 therefore no dependency entry, confuses make into thinking a .o
905 file that happens to exist is up-to-date. */
906 static const char *cpp_unique_options =
907 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
908 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
909 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
910 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
911 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
912 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
913 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
914 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
917 /* This contains cpp options which are common with cc1_options and are passed
918 only when preprocessing only to avoid duplication. We pass the cc1 spec
919 options to the preprocessor so that it the cc1 spec may manipulate
920 options used to set target flags. Those special target flags settings may
921 in turn cause preprocessor symbols to be defined specially. */
922 static const char *cpp_options =
923 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
924 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
925 %{undef} %{save-temps*:-fpch-preprocess}";
927 /* This contains cpp options which are not passed when the preprocessor
928 output will be used by another program. */
929 static const char *cpp_debug_options = "%{d*}";
931 /* NB: This is shared amongst all front-ends, except for Ada. */
932 static const char *cc1_options =
933 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
934 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
935 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
936 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
937 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
938 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
939 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
940 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\
941 %{-target-help:--target-help}\
942 %{-version:--version}\
943 %{-help=*:--help=%*}\
944 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
945 %{fsyntax-only:-o %j} %{-param*}\
946 %{coverage:-fprofile-arcs -ftest-coverage}";
948 static const char *asm_options =
949 "%{-target-help:%:print-asm-header()} "
951 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
952 to the assembler equivalents. */
953 "%{v} %{w:-W} %{I*} "
955 ASM_COMPRESS_DEBUG_SPEC
956 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
958 static const char *invoke_as =
959 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
961 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
962 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
966 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
967 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
971 /* Some compilers have limits on line lengths, and the multilib_select
972 and/or multilib_matches strings can be very long, so we build them at
974 static struct obstack multilib_obstack;
975 static const char *multilib_select;
976 static const char *multilib_matches;
977 static const char *multilib_defaults;
978 static const char *multilib_exclusions;
979 static const char *multilib_reuse;
981 /* Check whether a particular argument is a default argument. */
983 #ifndef MULTILIB_DEFAULTS
984 #define MULTILIB_DEFAULTS { "" }
987 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
989 #ifndef DRIVER_SELF_SPECS
990 #define DRIVER_SELF_SPECS ""
993 /* Linking to libgomp implies pthreads. This is particularly important
994 for targets that use different start files and suchlike. */
995 #ifndef GOMP_SELF_SPECS
996 #define GOMP_SELF_SPECS "%{fopenacc|fopenmp|ftree-parallelize-loops=*: " \
1000 /* Likewise for -fgnu-tm. */
1001 #ifndef GTM_SELF_SPECS
1002 #define GTM_SELF_SPECS "%{fgnu-tm: -pthread}"
1005 /* Likewise for -fcilkplus. */
1006 #ifndef CILK_SELF_SPECS
1007 #define CILK_SELF_SPECS "%{fcilkplus: -pthread}"
1010 static const char *const driver_self_specs[] = {
1011 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
1012 DRIVER_SELF_SPECS, CONFIGURE_SPECS, GOMP_SELF_SPECS, GTM_SELF_SPECS,
1016 #ifndef OPTION_DEFAULT_SPECS
1017 #define OPTION_DEFAULT_SPECS { "", "" }
1026 static const struct default_spec
1027 option_default_specs[] = { OPTION_DEFAULT_SPECS };
1031 struct user_specs *next;
1032 const char *filename;
1035 static struct user_specs *user_specs_head, *user_specs_tail;
1038 /* Record the mapping from file suffixes for compilation specs. */
1042 const char *suffix; /* Use this compiler for input files
1043 whose names end in this suffix. */
1045 const char *spec; /* To use this compiler, run this spec. */
1047 const char *cpp_spec; /* If non-NULL, substitute this spec
1048 for `%C', rather than the usual
1050 const int combinable; /* If nonzero, compiler can deal with
1051 multiple source files at once (IMA). */
1052 const int needs_preprocessing; /* If nonzero, source files need to
1053 be run through a preprocessor. */
1056 /* Pointer to a vector of `struct compiler' that gives the spec for
1057 compiling a file, based on its suffix.
1058 A file that does not end in any of these suffixes will be passed
1059 unchanged to the loader and nothing else will be done to it.
1061 An entry containing two 0s is used to terminate the vector.
1063 If multiple entries match a file, the last matching one is used. */
1065 static struct compiler *compilers;
1067 /* Number of entries in `compilers', not counting the null terminator. */
1069 static int n_compilers;
1071 /* The default list of file name suffixes and their compilation specs. */
1073 static const struct compiler default_compilers[] =
1075 /* Add lists of suffixes of known languages here. If those languages
1076 were not present when we built the driver, we will hit these copies
1077 and be given a more meaningful error than "file not used since
1078 linking is not done". */
1079 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
1080 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
1081 {".mii", "#Objective-C++", 0, 0, 0},
1082 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
1083 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
1084 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
1085 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
1086 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
1087 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
1088 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
1089 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
1090 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
1091 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
1092 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
1093 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
1094 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
1095 {".r", "#Ratfor", 0, 0, 0},
1096 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
1097 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
1098 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
1099 {".go", "#Go", 0, 1, 0},
1100 /* Next come the entries for C. */
1101 {".c", "@c", 0, 0, 1},
1103 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1104 external preprocessor if -save-temps is given. */
1105 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1108 %eGNU C no longer supports -traditional without -E}\
1109 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1110 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1111 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1113 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1114 cc1 %(cpp_unique_options) %(cc1_options)}}}\
1115 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
1117 "%{!E:%e-E or -x required when input is from standard input}\
1118 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
1119 {".h", "@c-header", 0, 0, 0},
1121 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1122 external preprocessor if -save-temps is given. */
1123 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1125 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1126 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1127 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1129 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
1130 %W{o*:--output-pch=%*}}%V}\
1131 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1132 cc1 %(cpp_unique_options) %(cc1_options)\
1133 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
1134 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
1135 {".i", "@cpp-output", 0, 0, 0},
1137 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
1138 {".s", "@assembler", 0, 0, 0},
1140 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
1141 {".sx", "@assembler-with-cpp", 0, 0, 0},
1142 {".S", "@assembler-with-cpp", 0, 0, 0},
1143 {"@assembler-with-cpp",
1144 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
1145 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1146 %{E|M|MM:%(cpp_debug_options)}\
1147 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1148 as %(asm_debug) %(asm_options) %|.s %A }}}}"
1150 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1151 %{E|M|MM:%(cpp_debug_options)}\
1152 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1153 as %(asm_debug) %(asm_options) %m.s %A }}}}"
1158 /* Mark end of table. */
1162 /* Number of elements in default_compilers, not counting the terminator. */
1164 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
1166 typedef char *char_p; /* For DEF_VEC_P. */
1168 /* A vector of options to give to the linker.
1169 These options are accumulated by %x,
1170 and substituted into the linker command with %X. */
1171 static vec<char_p> linker_options;
1173 /* A vector of options to give to the assembler.
1174 These options are accumulated by -Wa,
1175 and substituted into the assembler command with %Y. */
1176 static vec<char_p> assembler_options;
1178 /* A vector of options to give to the preprocessor.
1179 These options are accumulated by -Wp,
1180 and substituted into the preprocessor command with %Z. */
1181 static vec<char_p> preprocessor_options;
1184 skip_whitespace (char *p)
1188 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1189 be considered whitespace. */
1190 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1192 else if (*p == '\n' || *p == ' ' || *p == '\t')
1206 /* Structures to keep track of prefixes to try when looking for files. */
1210 const char *prefix; /* String to prepend to the path. */
1211 struct prefix_list *next; /* Next in linked list. */
1212 int require_machine_suffix; /* Don't use without machine_suffix. */
1213 /* 2 means try both machine_suffix and just_machine_suffix. */
1214 int priority; /* Sort key - priority within list. */
1215 int os_multilib; /* 1 if OS multilib scheme should be used,
1216 0 for GCC multilib scheme. */
1221 struct prefix_list *plist; /* List of prefixes to try */
1222 int max_len; /* Max length of a prefix in PLIST */
1223 const char *name; /* Name of this list (used in config stuff) */
1226 /* List of prefixes to try when looking for executables. */
1228 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1230 /* List of prefixes to try when looking for startup (crt0) files. */
1232 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1234 /* List of prefixes to try when looking for include files. */
1236 static struct path_prefix include_prefixes = { 0, 0, "include" };
1238 /* Suffix to attach to directories searched for commands.
1239 This looks like `MACHINE/VERSION/'. */
1241 static const char *machine_suffix = 0;
1243 /* Suffix to attach to directories searched for commands.
1244 This is just `MACHINE/'. */
1246 static const char *just_machine_suffix = 0;
1248 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1250 static const char *gcc_exec_prefix;
1252 /* Adjusted value of standard_libexec_prefix. */
1254 static const char *gcc_libexec_prefix;
1256 /* Default prefixes to attach to command names. */
1258 #ifndef STANDARD_STARTFILE_PREFIX_1
1259 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1261 #ifndef STANDARD_STARTFILE_PREFIX_2
1262 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1265 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1266 #undef MD_EXEC_PREFIX
1267 #undef MD_STARTFILE_PREFIX
1268 #undef MD_STARTFILE_PREFIX_1
1271 /* If no prefixes defined, use the null string, which will disable them. */
1272 #ifndef MD_EXEC_PREFIX
1273 #define MD_EXEC_PREFIX ""
1275 #ifndef MD_STARTFILE_PREFIX
1276 #define MD_STARTFILE_PREFIX ""
1278 #ifndef MD_STARTFILE_PREFIX_1
1279 #define MD_STARTFILE_PREFIX_1 ""
1282 /* These directories are locations set at configure-time based on the
1283 --prefix option provided to configure. Their initializers are
1284 defined in Makefile.in. These paths are not *directly* used when
1285 gcc_exec_prefix is set because, in that case, we know where the
1286 compiler has been installed, and use paths relative to that
1287 location instead. */
1288 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1289 static const char *const standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1290 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1291 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1293 /* For native compilers, these are well-known paths containing
1294 components that may be provided by the system. For cross
1295 compilers, these paths are not used. */
1296 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1297 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1298 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1299 static const char *const standard_startfile_prefix_1
1300 = STANDARD_STARTFILE_PREFIX_1;
1301 static const char *const standard_startfile_prefix_2
1302 = STANDARD_STARTFILE_PREFIX_2;
1304 /* A relative path to be used in finding the location of tools
1305 relative to the driver. */
1306 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1308 /* A prefix to be used when this is an accelerator compiler. */
1309 static const char *const accel_dir_suffix = ACCEL_DIR_SUFFIX;
1311 /* Subdirectory to use for locating libraries. Set by
1312 set_multilib_dir based on the compilation options. */
1314 static const char *multilib_dir;
1316 /* Subdirectory to use for locating libraries in OS conventions. Set by
1317 set_multilib_dir based on the compilation options. */
1319 static const char *multilib_os_dir;
1321 /* Subdirectory to use for locating libraries in multiarch conventions. Set by
1322 set_multilib_dir based on the compilation options. */
1324 static const char *multiarch_dir;
1326 /* Structure to keep track of the specs that have been defined so far.
1327 These are accessed using %(specname) in a compiler or link
1332 /* The following 2 fields must be first */
1333 /* to allow EXTRA_SPECS to be initialized */
1334 const char *name; /* name of the spec. */
1335 const char *ptr; /* available ptr if no static pointer */
1337 /* The following fields are not initialized */
1338 /* by EXTRA_SPECS */
1339 const char **ptr_spec; /* pointer to the spec itself. */
1340 struct spec_list *next; /* Next spec in linked list. */
1341 int name_len; /* length of the name */
1342 bool user_p; /* whether string come from file spec. */
1343 bool alloc_p; /* whether string was allocated */
1346 #define INIT_STATIC_SPEC(NAME,PTR) \
1347 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, false, false }
1349 /* List of statically defined specs. */
1350 static struct spec_list static_specs[] =
1352 INIT_STATIC_SPEC ("asm", &asm_spec),
1353 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1354 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1355 INIT_STATIC_SPEC ("asm_options", &asm_options),
1356 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1357 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1358 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1359 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1360 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1361 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1362 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1363 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1364 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1365 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1366 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec),
1367 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1368 INIT_STATIC_SPEC ("link", &link_spec),
1369 INIT_STATIC_SPEC ("lib", &lib_spec),
1370 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec),
1371 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1372 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1373 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1374 INIT_STATIC_SPEC ("version", &compiler_version),
1375 INIT_STATIC_SPEC ("multilib", &multilib_select),
1376 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1377 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1378 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1379 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1380 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1381 INIT_STATIC_SPEC ("multilib_reuse", &multilib_reuse),
1382 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1383 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec),
1384 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec),
1385 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec),
1386 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1387 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1388 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1389 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1390 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1391 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec),
1392 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1393 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1394 INIT_STATIC_SPEC ("self_spec", &self_spec),
1397 #ifdef EXTRA_SPECS /* additional specs needed */
1398 /* Structure to keep track of just the first two args of a spec_list.
1399 That is all that the EXTRA_SPECS macro gives us. */
1402 const char *const name;
1403 const char *const ptr;
1406 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1407 static struct spec_list *extra_specs = (struct spec_list *) 0;
1410 /* List of dynamically allocates specs that have been defined so far. */
1412 static struct spec_list *specs = (struct spec_list *) 0;
1414 /* List of static spec functions. */
1416 static const struct spec_function static_spec_functions[] =
1418 { "getenv", getenv_spec_function },
1419 { "if-exists", if_exists_spec_function },
1420 { "if-exists-else", if_exists_else_spec_function },
1421 { "sanitize", sanitize_spec_function },
1422 { "replace-outfile", replace_outfile_spec_function },
1423 { "remove-outfile", remove_outfile_spec_function },
1424 { "version-compare", version_compare_spec_function },
1425 { "include", include_spec_function },
1426 { "find-file", find_file_spec_function },
1427 { "find-plugindir", find_plugindir_spec_function },
1428 { "print-asm-header", print_asm_header_spec_function },
1429 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function },
1430 { "compare-debug-self-opt", compare_debug_self_opt_spec_function },
1431 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function },
1432 { "pass-through-libs", pass_through_libs_spec_func },
1433 { "replace-extension", replace_extension_spec_func },
1434 #ifdef EXTRA_SPEC_FUNCTIONS
1435 EXTRA_SPEC_FUNCTIONS
1440 static int processing_spec_function;
1442 /* Add appropriate libgcc specs to OBSTACK, taking into account
1443 various permutations of -shared-libgcc, -shared, and such. */
1445 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1447 #ifndef USE_LD_AS_NEEDED
1448 #define USE_LD_AS_NEEDED 0
1452 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1453 const char *static_name, const char *eh_name)
1457 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}"
1458 "%{!static:%{!static-libgcc:"
1459 #if USE_LD_AS_NEEDED
1460 "%{!shared-libgcc:",
1461 static_name, " " LD_AS_NEEDED_OPTION " ",
1462 shared_name, " " LD_NO_AS_NEEDED_OPTION
1465 shared_name, "%{!shared: ", static_name, "}"
1469 "%{!shared-libgcc:", static_name, " ", eh_name, "}"
1470 "%{shared-libgcc:", shared_name, " ", static_name, "}"
1474 "%{shared-libgcc:", shared_name, "}"
1475 "%{!shared-libgcc:", static_name, "}"
1478 "%{shared:", shared_name, "}"
1483 obstack_grow (obstack, buf, strlen (buf));
1486 #endif /* ENABLE_SHARED_LIBGCC */
1488 /* Initialize the specs lookup routines. */
1493 struct spec_list *next = (struct spec_list *) 0;
1494 struct spec_list *sl = (struct spec_list *) 0;
1498 return; /* Already initialized. */
1501 fnotice (stderr, "Using built-in specs.\n");
1504 extra_specs = XCNEWVEC (struct spec_list, ARRAY_SIZE (extra_specs_1));
1506 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1508 sl = &extra_specs[i];
1509 sl->name = extra_specs_1[i].name;
1510 sl->ptr = extra_specs_1[i].ptr;
1512 sl->name_len = strlen (sl->name);
1513 sl->ptr_spec = &sl->ptr;
1518 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1520 sl = &static_specs[i];
1525 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1526 /* ??? If neither -shared-libgcc nor --static-libgcc was
1527 seen, then we should be making an educated guess. Some proposed
1528 heuristics for ELF include:
1530 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1531 program will be doing dynamic loading, which will likely
1532 need the shared libgcc.
1534 (2) If "-ldl", then it's also a fair bet that we're doing
1537 (3) For each ET_DYN we're linking against (either through -lfoo
1538 or /some/path/foo.so), check to see whether it or one of
1539 its dependencies depends on a shared libgcc.
1543 If the runtime is fixed to look for program headers instead
1544 of calling __register_frame_info at all, for each object,
1545 use the shared libgcc if any EH symbol referenced.
1547 If crtstuff is fixed to not invoke __register_frame_info
1548 automatically, for each object, use the shared libgcc if
1549 any non-empty unwind section found.
1551 Doing any of this probably requires invoking an external program to
1552 do the actual object file scanning. */
1554 const char *p = libgcc_spec;
1557 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1558 when given the proper command line arguments. */
1561 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1563 init_gcc_specs (&obstack,
1565 #ifdef USE_LIBUNWIND_EXCEPTIONS
1571 #ifdef USE_LIBUNWIND_EXCEPTIONS
1572 # ifdef HAVE_LD_STATIC_DYNAMIC
1573 " %{!static:" LD_STATIC_OPTION "} -lunwind"
1574 " %{!static:" LD_DYNAMIC_OPTION "}"
1584 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1586 /* Ug. We don't know shared library extensions. Hope that
1587 systems that use this form don't do shared libraries. */
1588 init_gcc_specs (&obstack,
1592 #ifdef USE_LIBUNWIND_EXCEPTIONS
1601 obstack_1grow (&obstack, *p);
1602 in_sep = (*p == ' ');
1607 obstack_1grow (&obstack, '\0');
1608 libgcc_spec = XOBFINISH (&obstack, const char *);
1611 #ifdef USE_AS_TRADITIONAL_FORMAT
1612 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1614 static const char tf[] = "--traditional-format ";
1615 obstack_grow (&obstack, tf, sizeof (tf) - 1);
1616 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1617 asm_spec = XOBFINISH (&obstack, const char *);
1621 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \
1622 defined LINKER_HASH_STYLE
1623 # ifdef LINK_BUILDID_SPEC
1624 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1625 obstack_grow (&obstack, LINK_BUILDID_SPEC, sizeof (LINK_BUILDID_SPEC) - 1);
1627 # ifdef LINK_EH_SPEC
1628 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1629 obstack_grow (&obstack, LINK_EH_SPEC, sizeof (LINK_EH_SPEC) - 1);
1631 # ifdef LINKER_HASH_STYLE
1632 /* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had
1635 static const char hash_style[] = "--hash-style=";
1636 obstack_grow (&obstack, hash_style, sizeof (hash_style) - 1);
1637 obstack_grow (&obstack, LINKER_HASH_STYLE, sizeof (LINKER_HASH_STYLE) - 1);
1638 obstack_1grow (&obstack, ' ');
1641 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1642 link_spec = XOBFINISH (&obstack, const char *);
1648 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1649 removed; If the spec starts with a + then SPEC is added to the end of the
1653 set_spec (const char *name, const char *spec, bool user_p)
1655 struct spec_list *sl;
1656 const char *old_spec;
1657 int name_len = strlen (name);
1660 /* If this is the first call, initialize the statically allocated specs. */
1663 struct spec_list *next = (struct spec_list *) 0;
1664 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1666 sl = &static_specs[i];
1673 /* See if the spec already exists. */
1674 for (sl = specs; sl; sl = sl->next)
1675 if (name_len == sl->name_len && !strcmp (sl->name, name))
1680 /* Not found - make it. */
1681 sl = XNEW (struct spec_list);
1682 sl->name = xstrdup (name);
1683 sl->name_len = name_len;
1684 sl->ptr_spec = &sl->ptr;
1686 *(sl->ptr_spec) = "";
1691 old_spec = *(sl->ptr_spec);
1692 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1693 ? concat (old_spec, spec + 1, NULL)
1698 fnotice (stderr, "Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1701 /* Free the old spec. */
1702 if (old_spec && sl->alloc_p)
1703 free (CONST_CAST (char *, old_spec));
1705 sl->user_p = user_p;
1709 /* Accumulate a command (program name and args), and run it. */
1711 typedef const char *const_char_p; /* For DEF_VEC_P. */
1713 /* Vector of pointers to arguments in the current line of specifications. */
1715 static vec<const_char_p> argbuf;
1717 /* Were the options -c, -S or -E passed. */
1718 static int have_c = 0;
1720 /* Was the option -o passed. */
1721 static int have_o = 0;
1723 /* Pointer to output file name passed in with -o. */
1724 static const char *output_file = 0;
1726 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1727 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1730 static struct temp_name {
1731 const char *suffix; /* suffix associated with the code. */
1732 int length; /* strlen (suffix). */
1733 int unique; /* Indicates whether %g or %u/%U was used. */
1734 const char *filename; /* associated filename. */
1735 int filename_length; /* strlen (filename). */
1736 struct temp_name *next;
1739 /* Number of commands executed so far. */
1741 static int execution_count;
1743 /* Number of commands that exited with a signal. */
1745 static int signal_count;
1747 /* Allocate the argument vector. */
1755 /* Clear out the vector of arguments (after a command is executed). */
1760 argbuf.truncate (0);
1763 /* Add one argument to the vector at the end.
1764 This is done when a space is seen or at the end of the line.
1765 If DELETE_ALWAYS is nonzero, the arg is a filename
1766 and the file should be deleted eventually.
1767 If DELETE_FAILURE is nonzero, the arg is a filename
1768 and the file should be deleted if this compilation fails. */
1771 store_arg (const char *arg, int delete_always, int delete_failure)
1773 argbuf.safe_push (arg);
1775 if (delete_always || delete_failure)
1778 /* If the temporary file we should delete is specified as
1779 part of a joined argument extract the filename. */
1781 && (p = strrchr (arg, '=')))
1783 record_temp_file (arg, delete_always, delete_failure);
1787 /* Load specs from a file name named FILENAME, replacing occurrences of
1788 various different types of line-endings, \r\n, \n\r and just \r, with
1792 load_specs (const char *filename)
1796 struct stat statbuf;
1803 fnotice (stderr, "Reading specs from %s\n", filename);
1805 /* Open and stat the file. */
1806 desc = open (filename, O_RDONLY, 0);
1808 pfatal_with_name (filename);
1809 if (stat (filename, &statbuf) < 0)
1810 pfatal_with_name (filename);
1812 /* Read contents of file into BUFFER. */
1813 buffer = XNEWVEC (char, statbuf.st_size + 1);
1814 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1816 pfatal_with_name (filename);
1817 buffer[readlen] = 0;
1820 specs = XNEWVEC (char, readlen + 1);
1822 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1828 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1830 else if (*(buffer_p + 1) == '\n') /* \r\n */
1844 /* Read compilation specs from a file named FILENAME,
1845 replacing the default ones.
1847 A suffix which starts with `*' is a definition for
1848 one of the machine-specific sub-specs. The "suffix" should be
1849 *asm, *cc1, *cpp, *link, *startfile, etc.
1850 The corresponding spec is stored in asm_spec, etc.,
1851 rather than in the `compilers' vector.
1853 Anything invalid in the file is a fatal error. */
1856 read_specs (const char *filename, bool main_p, bool user_p)
1861 buffer = load_specs (filename);
1863 /* Scan BUFFER for specs, putting them in the vector. */
1869 char *in, *out, *p1, *p2, *p3;
1871 /* Advance P in BUFFER to the next nonblank nocomment line. */
1872 p = skip_whitespace (p);
1876 /* Is this a special command that starts with '%'? */
1877 /* Don't allow this for the main specs file, since it would
1878 encourage people to overwrite it. */
1879 if (*p == '%' && !main_p)
1882 while (*p && *p != '\n')
1888 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1889 && (p1[sizeof "%include" - 1] == ' '
1890 || p1[sizeof "%include" - 1] == '\t'))
1894 p1 += sizeof ("%include");
1895 while (*p1 == ' ' || *p1 == '\t')
1898 if (*p1++ != '<' || p[-2] != '>')
1899 fatal_error (input_location,
1900 "specs %%include syntax malformed after "
1902 (long) (p1 - buffer + 1));
1905 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1906 read_specs (new_filename ? new_filename : p1, false, user_p);
1909 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1910 && (p1[sizeof "%include_noerr" - 1] == ' '
1911 || p1[sizeof "%include_noerr" - 1] == '\t'))
1915 p1 += sizeof "%include_noerr";
1916 while (*p1 == ' ' || *p1 == '\t')
1919 if (*p1++ != '<' || p[-2] != '>')
1920 fatal_error (input_location,
1921 "specs %%include syntax malformed after "
1923 (long) (p1 - buffer + 1));
1926 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1928 read_specs (new_filename, false, user_p);
1929 else if (verbose_flag)
1930 fnotice (stderr, "could not find specs file %s\n", p1);
1933 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1934 && (p1[sizeof "%rename" - 1] == ' '
1935 || p1[sizeof "%rename" - 1] == '\t'))
1938 struct spec_list *sl;
1939 struct spec_list *newsl;
1941 /* Get original name. */
1942 p1 += sizeof "%rename";
1943 while (*p1 == ' ' || *p1 == '\t')
1946 if (! ISALPHA ((unsigned char) *p1))
1947 fatal_error (input_location,
1948 "specs %%rename syntax malformed after "
1950 (long) (p1 - buffer));
1953 while (*p2 && !ISSPACE ((unsigned char) *p2))
1956 if (*p2 != ' ' && *p2 != '\t')
1957 fatal_error (input_location,
1958 "specs %%rename syntax malformed after "
1960 (long) (p2 - buffer));
1964 while (*p2 == ' ' || *p2 == '\t')
1967 if (! ISALPHA ((unsigned char) *p2))
1968 fatal_error (input_location,
1969 "specs %%rename syntax malformed after "
1971 (long) (p2 - buffer));
1973 /* Get new spec name. */
1975 while (*p3 && !ISSPACE ((unsigned char) *p3))
1979 fatal_error (input_location,
1980 "specs %%rename syntax malformed after "
1982 (long) (p3 - buffer));
1985 for (sl = specs; sl; sl = sl->next)
1986 if (name_len == sl->name_len && !strcmp (sl->name, p1))
1990 fatal_error (input_location,
1991 "specs %s spec was not found to be renamed", p1);
1993 if (strcmp (p1, p2) == 0)
1996 for (newsl = specs; newsl; newsl = newsl->next)
1997 if (strcmp (newsl->name, p2) == 0)
1998 fatal_error (input_location,
1999 "%s: attempt to rename spec %qs to "
2000 "already defined spec %qs",
2005 fnotice (stderr, "rename spec %s to %s\n", p1, p2);
2007 fnotice (stderr, "spec is '%s'\n\n", *(sl->ptr_spec));
2011 set_spec (p2, *(sl->ptr_spec), user_p);
2013 free (CONST_CAST (char *, *(sl->ptr_spec)));
2015 *(sl->ptr_spec) = "";
2020 fatal_error (input_location,
2021 "specs unknown %% command after %ld characters",
2022 (long) (p1 - buffer));
2025 /* Find the colon that should end the suffix. */
2027 while (*p1 && *p1 != ':' && *p1 != '\n')
2030 /* The colon shouldn't be missing. */
2032 fatal_error (input_location,
2033 "specs file malformed after %ld characters",
2034 (long) (p1 - buffer));
2036 /* Skip back over trailing whitespace. */
2038 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
2041 /* Copy the suffix to a string. */
2042 suffix = save_string (p, p2 - p);
2043 /* Find the next line. */
2044 p = skip_whitespace (p1 + 1);
2046 fatal_error (input_location,
2047 "specs file malformed after %ld characters",
2048 (long) (p - buffer));
2051 /* Find next blank line or end of string. */
2052 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
2055 /* Specs end at the blank line and do not include the newline. */
2056 spec = save_string (p, p1 - p);
2059 /* Delete backslash-newline sequences from the spec. */
2064 if (in[0] == '\\' && in[1] == '\n')
2066 else if (in[0] == '#')
2067 while (*in && *in != '\n')
2075 if (suffix[0] == '*')
2077 if (! strcmp (suffix, "*link_command"))
2078 link_command_spec = spec;
2080 set_spec (suffix + 1, spec, user_p);
2084 /* Add this pair to the vector. */
2086 = XRESIZEVEC (struct compiler, compilers, n_compilers + 2);
2088 compilers[n_compilers].suffix = suffix;
2089 compilers[n_compilers].spec = spec;
2091 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2095 link_command_spec = spec;
2098 if (link_command_spec == 0)
2099 fatal_error (input_location, "spec file has no spec for linking");
2102 /* Record the names of temporary files we tell compilers to write,
2103 and delete them at the end of the run. */
2105 /* This is the common prefix we use to make temp file names.
2106 It is chosen once for each run of this program.
2107 It is substituted into a spec by %g or %j.
2108 Thus, all temp file names contain this prefix.
2109 In practice, all temp file names start with this prefix.
2111 This prefix comes from the envvar TMPDIR if it is defined;
2112 otherwise, from the P_tmpdir macro if that is defined;
2113 otherwise, in /usr/tmp or /tmp;
2114 or finally the current directory if all else fails. */
2116 static const char *temp_filename;
2118 /* Length of the prefix. */
2120 static int temp_filename_length;
2122 /* Define the list of temporary files to delete. */
2127 struct temp_file *next;
2130 /* Queue of files to delete on success or failure of compilation. */
2131 static struct temp_file *always_delete_queue;
2132 /* Queue of files to delete on failure of compilation. */
2133 static struct temp_file *failure_delete_queue;
2135 /* Record FILENAME as a file to be deleted automatically.
2136 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2137 otherwise delete it in any case.
2138 FAIL_DELETE nonzero means delete it if a compilation step fails;
2139 otherwise delete it in any case. */
2142 record_temp_file (const char *filename, int always_delete, int fail_delete)
2144 char *const name = xstrdup (filename);
2148 struct temp_file *temp;
2149 for (temp = always_delete_queue; temp; temp = temp->next)
2150 if (! filename_cmp (name, temp->name))
2153 temp = XNEW (struct temp_file);
2154 temp->next = always_delete_queue;
2156 always_delete_queue = temp;
2163 struct temp_file *temp;
2164 for (temp = failure_delete_queue; temp; temp = temp->next)
2165 if (! filename_cmp (name, temp->name))
2171 temp = XNEW (struct temp_file);
2172 temp->next = failure_delete_queue;
2174 failure_delete_queue = temp;
2180 /* Delete all the temporary files whose names we previously recorded. */
2182 #ifndef DELETE_IF_ORDINARY
2183 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2186 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2187 if (unlink (NAME) < 0) \
2189 perror_with_name (NAME); \
2194 delete_if_ordinary (const char *name)
2200 printf ("Delete %s? (y or n) ", name);
2204 while ((c = getchar ()) != '\n' && c != EOF)
2207 if (i == 'y' || i == 'Y')
2209 DELETE_IF_ORDINARY (name, st, verbose_flag);
2213 delete_temp_files (void)
2215 struct temp_file *temp;
2217 for (temp = always_delete_queue; temp; temp = temp->next)
2218 delete_if_ordinary (temp->name);
2219 always_delete_queue = 0;
2222 /* Delete all the files to be deleted on error. */
2225 delete_failure_queue (void)
2227 struct temp_file *temp;
2229 for (temp = failure_delete_queue; temp; temp = temp->next)
2230 delete_if_ordinary (temp->name);
2234 clear_failure_queue (void)
2236 failure_delete_queue = 0;
2239 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2241 If DO_MULTI is true iterate over the paths twice, first with multilib
2242 suffix then without, otherwise iterate over the paths once without
2243 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2244 to avoid visiting the same path twice, but we could do better. For
2245 instance, /usr/lib/../lib is considered different from /usr/lib.
2246 At least EXTRA_SPACE chars past the end of the path passed to
2247 CALLBACK are available for use by the callback.
2248 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2250 Returns the value returned by CALLBACK. */
2253 for_each_path (const struct path_prefix *paths,
2256 void *(*callback) (char *, void *),
2257 void *callback_info)
2259 struct prefix_list *pl;
2260 const char *multi_dir = NULL;
2261 const char *multi_os_dir = NULL;
2262 const char *multiarch_suffix = NULL;
2263 const char *multi_suffix;
2264 const char *just_multi_suffix;
2267 bool skip_multi_dir = false;
2268 bool skip_multi_os_dir = false;
2270 multi_suffix = machine_suffix;
2271 just_multi_suffix = just_machine_suffix;
2272 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0)
2274 multi_dir = concat (multilib_dir, dir_separator_str, NULL);
2275 multi_suffix = concat (multi_suffix, multi_dir, NULL);
2276 just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL);
2278 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0)
2279 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL);
2281 multiarch_suffix = concat (multiarch_dir, dir_separator_str, NULL);
2285 size_t multi_dir_len = 0;
2286 size_t multi_os_dir_len = 0;
2287 size_t multiarch_len = 0;
2289 size_t just_suffix_len;
2293 multi_dir_len = strlen (multi_dir);
2295 multi_os_dir_len = strlen (multi_os_dir);
2296 if (multiarch_suffix)
2297 multiarch_len = strlen (multiarch_suffix);
2298 suffix_len = strlen (multi_suffix);
2299 just_suffix_len = strlen (just_multi_suffix);
2303 len = paths->max_len + extra_space + 1;
2304 len += MAX (MAX (suffix_len, multi_os_dir_len), multiarch_len);
2305 path = XNEWVEC (char, len);
2308 for (pl = paths->plist; pl != 0; pl = pl->next)
2310 len = strlen (pl->prefix);
2311 memcpy (path, pl->prefix, len);
2313 #if 0 /* MACHINE/VERSION isn't used anywhere DragonFly */
2314 /* Look first in MACHINE/VERSION subdirectory. */
2315 if (!skip_multi_dir)
2317 memcpy (path + len, multi_suffix, suffix_len + 1);
2318 ret = callback (path, callback_info);
2324 /* Some paths are tried with just the machine (ie. target)
2325 subdir. This is used for finding as, ld, etc. */
2327 && pl->require_machine_suffix == 2)
2329 memcpy (path + len, just_multi_suffix, just_suffix_len + 1);
2330 ret = callback (path, callback_info);
2335 /* Now try the multiarch path. */
2337 && !pl->require_machine_suffix && multiarch_dir)
2339 memcpy (path + len, multiarch_suffix, multiarch_len + 1);
2340 ret = callback (path, callback_info);
2345 /* Now try the base path. */
2346 if (!pl->require_machine_suffix
2347 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir))
2349 const char *this_multi;
2350 size_t this_multi_len;
2352 if (pl->os_multilib)
2354 this_multi = multi_os_dir;
2355 this_multi_len = multi_os_dir_len;
2359 this_multi = multi_dir;
2360 this_multi_len = multi_dir_len;
2364 memcpy (path + len, this_multi, this_multi_len + 1);
2368 ret = callback (path, callback_info);
2376 if (multi_dir == NULL && multi_os_dir == NULL)
2379 /* Run through the paths again, this time without multilibs.
2380 Don't repeat any we have already seen. */
2383 free (CONST_CAST (char *, multi_dir));
2385 free (CONST_CAST (char *, multi_suffix));
2386 multi_suffix = machine_suffix;
2387 free (CONST_CAST (char *, just_multi_suffix));
2388 just_multi_suffix = just_machine_suffix;
2391 skip_multi_dir = true;
2394 free (CONST_CAST (char *, multi_os_dir));
2395 multi_os_dir = NULL;
2398 skip_multi_os_dir = true;
2403 free (CONST_CAST (char *, multi_dir));
2404 free (CONST_CAST (char *, multi_suffix));
2405 free (CONST_CAST (char *, just_multi_suffix));
2408 free (CONST_CAST (char *, multi_os_dir));
2414 /* Callback for build_search_list. Adds path to obstack being built. */
2416 struct add_to_obstack_info {
2423 add_to_obstack (char *path, void *data)
2425 struct add_to_obstack_info *info = (struct add_to_obstack_info *) data;
2427 if (info->check_dir && !is_directory (path, false))
2430 if (!info->first_time)
2431 obstack_1grow (info->ob, PATH_SEPARATOR);
2433 obstack_grow (info->ob, path, strlen (path));
2435 info->first_time = false;
2439 /* Add or change the value of an environment variable, outputting the
2440 change to standard error if in verbose mode. */
2442 xputenv (const char *string)
2445 fnotice (stderr, "%s\n", string);
2446 putenv (CONST_CAST (char *, string));
2449 /* Build a list of search directories from PATHS.
2450 PREFIX is a string to prepend to the list.
2451 If CHECK_DIR_P is true we ensure the directory exists.
2452 If DO_MULTI is true, multilib paths are output first, then
2454 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2455 It is also used by the --print-search-dirs flag. */
2458 build_search_list (const struct path_prefix *paths, const char *prefix,
2459 bool check_dir, bool do_multi)
2461 struct add_to_obstack_info info;
2463 info.ob = &collect_obstack;
2464 info.check_dir = check_dir;
2465 info.first_time = true;
2467 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2468 obstack_1grow (&collect_obstack, '=');
2470 for_each_path (paths, do_multi, 0, add_to_obstack, &info);
2472 obstack_1grow (&collect_obstack, '\0');
2473 return XOBFINISH (&collect_obstack, char *);
2476 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2480 putenv_from_prefixes (const struct path_prefix *paths, const char *env_var,
2483 xputenv (build_search_list (paths, env_var, true, do_multi));
2486 /* Check whether NAME can be accessed in MODE. This is like access,
2487 except that it never considers directories to be executable. */
2490 access_check (const char *name, int mode)
2496 if (stat (name, &st) < 0
2497 || S_ISDIR (st.st_mode))
2501 return access (name, mode);
2504 /* Callback for find_a_file. Appends the file name to the directory
2505 path. If the resulting file exists in the right mode, return the
2506 full pathname to the file. */
2508 struct file_at_path_info {
2517 file_at_path (char *path, void *data)
2519 struct file_at_path_info *info = (struct file_at_path_info *) data;
2520 size_t len = strlen (path);
2522 memcpy (path + len, info->name, info->name_len);
2523 len += info->name_len;
2525 /* Some systems have a suffix for executable files.
2526 So try appending that first. */
2527 if (info->suffix_len)
2529 memcpy (path + len, info->suffix, info->suffix_len + 1);
2530 if (access_check (path, info->mode) == 0)
2535 if (access_check (path, info->mode) == 0)
2541 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2542 access to check permissions. If DO_MULTI is true, search multilib
2543 paths then non-multilib paths, otherwise do not search multilib paths.
2544 Return 0 if not found, otherwise return its name, allocated with malloc. */
2547 find_a_file (const struct path_prefix *pprefix, const char *name, int mode,
2550 struct file_at_path_info info;
2552 #ifdef DEFAULT_ASSEMBLER
2553 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2554 return xstrdup (DEFAULT_ASSEMBLER);
2557 #ifdef DEFAULT_LINKER
2558 if (! strcmp (name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2559 return xstrdup (DEFAULT_LINKER);
2562 /* Determine the filename to execute (special case for absolute paths). */
2564 if (IS_ABSOLUTE_PATH (name))
2566 if (access (name, mode) == 0)
2567 return xstrdup (name);
2573 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "";
2574 info.name_len = strlen (info.name);
2575 info.suffix_len = strlen (info.suffix);
2578 return (char*) for_each_path (pprefix, do_multi,
2579 info.name_len + info.suffix_len,
2580 file_at_path, &info);
2583 /* Ranking of prefixes in the sort list. -B prefixes are put before
2586 enum path_prefix_priority
2588 PREFIX_PRIORITY_B_OPT,
2589 PREFIX_PRIORITY_LAST
2592 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2593 order according to PRIORITY. Within each PRIORITY, new entries are
2596 If WARN is nonzero, we will warn if no file is found
2597 through this prefix. WARN should point to an int
2598 which will be set to 1 if this entry is used.
2600 COMPONENT is the value to be passed to update_path.
2602 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2603 the complete value of machine_suffix.
2604 2 means try both machine_suffix and just_machine_suffix. */
2607 add_prefix (struct path_prefix *pprefix, const char *prefix,
2608 const char *component, /* enum prefix_priority */ int priority,
2609 int require_machine_suffix, int os_multilib)
2611 struct prefix_list *pl, **prev;
2614 for (prev = &pprefix->plist;
2615 (*prev) != NULL && (*prev)->priority <= priority;
2616 prev = &(*prev)->next)
2619 /* Keep track of the longest prefix. */
2621 prefix = update_path (prefix, component);
2622 len = strlen (prefix);
2623 if (len > pprefix->max_len)
2624 pprefix->max_len = len;
2626 pl = XNEW (struct prefix_list);
2627 pl->prefix = prefix;
2628 pl->require_machine_suffix = require_machine_suffix;
2629 pl->priority = priority;
2630 pl->os_multilib = os_multilib;
2632 /* Insert after PREV. */
2637 /* Same as add_prefix, but prepending target_system_root to prefix. */
2638 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2640 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2641 const char *component,
2642 /* enum prefix_priority */ int priority,
2643 int require_machine_suffix, int os_multilib)
2645 if (!IS_ABSOLUTE_PATH (prefix))
2646 fatal_error (input_location, "system path %qs is not absolute", prefix);
2648 if (target_system_root)
2650 char *sysroot_no_trailing_dir_separator = xstrdup (target_system_root);
2651 size_t sysroot_len = strlen (target_system_root);
2654 && target_system_root[sysroot_len - 1] == DIR_SEPARATOR)
2655 sysroot_no_trailing_dir_separator[sysroot_len - 1] = '\0';
2657 if (target_sysroot_suffix)
2658 prefix = concat (sysroot_no_trailing_dir_separator,
2659 target_sysroot_suffix, prefix, NULL);
2661 prefix = concat (sysroot_no_trailing_dir_separator, prefix, NULL);
2663 free (sysroot_no_trailing_dir_separator);
2665 /* We have to override this because GCC's notion of sysroot
2666 moves along with GCC. */
2670 add_prefix (pprefix, prefix, component, priority,
2671 require_machine_suffix, os_multilib);
2674 /* Execute the command specified by the arguments on the current line of spec.
2675 When using pipes, this includes several piped-together commands
2676 with `|' between them.
2678 Return 0 if successful, -1 if failed. */
2684 int n_commands; /* # of command. */
2686 struct pex_obj *pex;
2689 const char *prog; /* program name. */
2690 const char **argv; /* vector of args. */
2694 struct command *commands; /* each command buffer with above info. */
2696 gcc_assert (!processing_spec_function);
2700 string = find_a_file (&exec_prefixes,
2701 argbuf[0], X_OK, false);
2704 insert_wrapper (wrapper_string);
2707 /* Count # of piped commands. */
2708 for (n_commands = 1, i = 0; argbuf.iterate (i, &arg); i++)
2709 if (strcmp (arg, "|") == 0)
2712 /* Get storage for each command. */
2713 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2715 /* Split argbuf into its separate piped processes,
2716 and record info about each one.
2717 Also search for the programs that are to be run. */
2719 argbuf.safe_push (0);
2721 commands[0].prog = argbuf[0]; /* first command. */
2722 commands[0].argv = argbuf.address ();
2724 if (!wrapper_string)
2726 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false);
2727 commands[0].argv[0] = (string) ? string : commands[0].argv[0];
2730 for (n_commands = 1, i = 0; argbuf.iterate (i, &arg); i++)
2731 if (arg && strcmp (arg, "|") == 0)
2732 { /* each command. */
2733 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2734 fatal_error (input_location, "-pipe not supported");
2736 argbuf[i] = 0; /* Termination of
2738 commands[n_commands].prog = argbuf[i + 1];
2739 commands[n_commands].argv
2740 = &(argbuf.address ())[i + 1];
2741 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2744 commands[n_commands].argv[0] = string;
2748 /* If -v, print what we are about to do, and maybe query. */
2752 /* For help listings, put a blank line between sub-processes. */
2753 if (print_help_list)
2754 fputc ('\n', stderr);
2756 /* Print each piped command as a separate line. */
2757 for (i = 0; i < n_commands; i++)
2759 const char *const *j;
2761 if (verbose_only_flag)
2763 for (j = commands[i].argv; *j; j++)
2766 for (p = *j; *p; ++p)
2767 if (!ISALNUM ((unsigned char) *p)
2768 && *p != '_' && *p != '/' && *p != '-' && *p != '.')
2772 fprintf (stderr, " \"");
2773 for (p = *j; *p; ++p)
2775 if (*p == '"' || *p == '\\' || *p == '$')
2776 fputc ('\\', stderr);
2779 fputc ('"', stderr);
2781 /* If it's empty, print "". */
2783 fprintf (stderr, " \"\"");
2785 fprintf (stderr, " %s", *j);
2789 for (j = commands[i].argv; *j; j++)
2790 /* If it's empty, print "". */
2792 fprintf (stderr, " \"\"");
2794 fprintf (stderr, " %s", *j);
2796 /* Print a pipe symbol after all but the last command. */
2797 if (i + 1 != n_commands)
2798 fprintf (stderr, " |");
2799 fprintf (stderr, "\n");
2802 if (verbose_only_flag != 0)
2804 /* verbose_only_flag should act as if the spec was
2805 executed, so increment execution_count before
2806 returning. This prevents spurious warnings about
2807 unused linker input files, etc. */
2812 fnotice (stderr, "\nGo ahead? (y or n) ");
2816 while (getchar () != '\n')
2819 if (i != 'y' && i != 'Y')
2824 #ifdef ENABLE_VALGRIND_CHECKING
2825 /* Run the each command through valgrind. To simplify prepending the
2826 path to valgrind and the option "-q" (for quiet operation unless
2827 something triggers), we allocate a separate argv array. */
2829 for (i = 0; i < n_commands; i++)
2835 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2838 argv = XALLOCAVEC (const char *, argc + 3);
2840 argv[0] = VALGRIND_PATH;
2842 for (j = 2; j < argc + 2; j++)
2843 argv[j] = commands[i].argv[j - 2];
2846 commands[i].argv = argv;
2847 commands[i].prog = argv[0];
2851 /* Run each piped subprocess. */
2853 pex = pex_init (PEX_USE_PIPES | ((report_times || report_times_to_file)
2854 ? PEX_RECORD_TIMES : 0),
2855 progname, temp_filename);
2857 fatal_error (input_location, "pex_init failed: %m");
2859 for (i = 0; i < n_commands; i++)
2863 const char *string = commands[i].argv[0];
2865 errmsg = pex_run (pex,
2866 ((i + 1 == n_commands ? PEX_LAST : 0)
2867 | (string == commands[i].prog ? PEX_SEARCH : 0)),
2868 string, CONST_CAST (char **, commands[i].argv),
2873 fatal_error (input_location, errmsg);
2877 pfatal_with_name (errmsg);
2881 if (i && string != commands[i].prog)
2882 free (CONST_CAST (char *, string));
2887 /* Wait for all the subprocesses to finish. */
2891 struct pex_time *times = NULL;
2894 statuses = (int *) alloca (n_commands * sizeof (int));
2895 if (!pex_get_status (pex, n_commands, statuses))
2896 fatal_error (input_location, "failed to get exit status: %m");
2898 if (report_times || report_times_to_file)
2900 times = (struct pex_time *) alloca (n_commands * sizeof (struct pex_time));
2901 if (!pex_get_times (pex, n_commands, times))
2902 fatal_error (input_location, "failed to get process times: %m");
2907 for (i = 0; i < n_commands; ++i)
2909 int status = statuses[i];
2911 if (WIFSIGNALED (status))
2914 /* SIGPIPE is a special case. It happens in -pipe mode
2915 when the compiler dies before the preprocessor is done,
2916 or the assembler dies before the compiler is done.
2917 There's generally been an error already, and this is
2918 just fallout. So don't generate another error unless
2919 we would otherwise have succeeded. */
2920 if (WTERMSIG (status) == SIGPIPE
2921 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2928 internal_error_no_backtrace ("%s (program %s)",
2929 strsignal (WTERMSIG (status)),
2932 else if (WIFEXITED (status)
2933 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2935 /* For ICEs in cc1, cc1obj, cc1plus see if it is
2936 reproducible or not. */
2939 && WEXITSTATUS (status) == ICE_EXIT_CODE
2941 && (p = strrchr (commands[0].argv[0], DIR_SEPARATOR))
2942 && ! strncmp (p + 1, "cc1", 3))
2943 try_generate_repro (commands[0].argv);
2944 if (WEXITSTATUS (status) > greatest_status)
2945 greatest_status = WEXITSTATUS (status);
2949 if (report_times || report_times_to_file)
2951 struct pex_time *pt = ×[i];
2954 ut = ((double) pt->user_seconds
2955 + (double) pt->user_microseconds / 1.0e6);
2956 st = ((double) pt->system_seconds
2957 + (double) pt->system_microseconds / 1.0e6);
2962 fnotice (stderr, "# %s %.2f %.2f\n",
2963 commands[i].prog, ut, st);
2965 if (report_times_to_file)
2968 const char *const *j;
2970 fprintf (report_times_to_file, "%g %g", ut, st);
2972 for (j = &commands[i].prog; *j; j = &commands[i].argv[++c])
2975 for (p = *j; *p; ++p)
2976 if (*p == '"' || *p == '\\' || *p == '$'
2982 fprintf (report_times_to_file, " \"");
2983 for (p = *j; *p; ++p)
2985 if (*p == '"' || *p == '\\' || *p == '$')
2986 fputc ('\\', report_times_to_file);
2987 fputc (*p, report_times_to_file);
2989 fputc ('"', report_times_to_file);
2992 fprintf (report_times_to_file, " %s", *j);
2995 fputc ('\n', report_times_to_file);
3001 if (commands[0].argv[0] != commands[0].prog)
3002 free (CONST_CAST (char *, commands[0].argv[0]));
3008 /* Find all the switches given to us
3009 and make a vector describing them.
3010 The elements of the vector are strings, one per switch given.
3011 If a switch uses following arguments, then the `part1' field
3012 is the switch itself and the `args' field
3013 is a null-terminated vector containing the following arguments.
3014 Bits in the `live_cond' field are:
3015 SWITCH_LIVE to indicate this switch is true in a conditional spec.
3016 SWITCH_FALSE to indicate this switch is overridden by a later switch.
3017 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
3018 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
3019 in all do_spec calls afterwards. Used for %<S from self specs.
3020 The `validated' field is nonzero if any spec has looked at this switch;
3021 if it remains zero at the end of the run, it must be meaningless. */
3023 #define SWITCH_LIVE (1 << 0)
3024 #define SWITCH_FALSE (1 << 1)
3025 #define SWITCH_IGNORE (1 << 2)
3026 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
3027 #define SWITCH_KEEP_FOR_GCC (1 << 4)
3033 unsigned int live_cond;
3039 static struct switchstr *switches;
3041 static int n_switches;
3043 static int n_switches_alloc;
3045 /* Set to zero if -fcompare-debug is disabled, positive if it's
3046 enabled and we're running the first compilation, negative if it's
3047 enabled and we're running the second compilation. For most of the
3048 time, it's in the range -1..1, but it can be temporarily set to 2
3049 or 3 to indicate that the -fcompare-debug flags didn't come from
3050 the command-line, but rather from the GCC_COMPARE_DEBUG environment
3051 variable, until a synthesized -fcompare-debug flag is added to the
3055 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
3056 int compare_debug_second;
3058 /* Set to the flags that should be passed to the second compilation in
3059 a -fcompare-debug compilation. */
3060 const char *compare_debug_opt;
3062 static struct switchstr *switches_debug_check[2];
3064 static int n_switches_debug_check[2];
3066 static int n_switches_alloc_debug_check[2];
3068 static char *debug_check_temp_file[2];
3070 /* Language is one of three things:
3072 1) The name of a real programming language.
3073 2) NULL, indicating that no one has figured out
3075 3) '*', indicating that the file should be passed
3080 const char *language;
3081 struct compiler *incompiler;
3086 /* Also a vector of input files specified. */
3088 static struct infile *infiles;
3092 static int n_infiles_alloc;
3094 /* True if multiple input files are being compiled to a single
3097 static bool combine_inputs;
3099 /* This counts the number of libraries added by lang_specific_driver, so that
3100 we can tell if there were any user supplied any files or libraries. */
3102 static int added_libraries;
3104 /* And a vector of corresponding output files is made up later. */
3106 const char **outfiles;
3108 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3110 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
3111 is true if we should look for an executable suffix. DO_OBJ
3112 is true if we should look for an object suffix. */
3115 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
3116 int do_obj ATTRIBUTE_UNUSED)
3118 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3126 len = strlen (name);
3128 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3129 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
3130 if (do_obj && len > 2
3131 && name[len - 2] == '.'
3132 && name[len - 1] == 'o')
3134 obstack_grow (&obstack, name, len - 2);
3135 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
3136 name = XOBFINISH (&obstack, const char *);
3140 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3141 /* If there is no filetype, make it the executable suffix (which includes
3142 the "."). But don't get confused if we have just "-o". */
3143 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
3146 for (i = len - 1; i >= 0; i--)
3147 if (IS_DIR_SEPARATOR (name[i]))
3150 for (i++; i < len; i++)
3154 obstack_grow (&obstack, name, len);
3155 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
3156 strlen (TARGET_EXECUTABLE_SUFFIX));
3157 name = XOBFINISH (&obstack, const char *);
3164 /* Display the command line switches accepted by gcc. */
3168 printf (_("Usage: %s [options] file...\n"), progname);
3169 fputs (_("Options:\n"), stdout);
3171 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
3172 fputs (_(" --help Display this information\n"), stdout);
3173 fputs (_(" --target-help Display target specific command line options\n"), stdout);
3174 fputs (_(" --help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumented}}[,...]\n"), stdout);
3175 fputs (_(" Display specific types of command line options\n"), stdout);
3177 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
3178 fputs (_(" --version Display compiler version information\n"), stdout);
3179 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
3180 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
3181 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
3182 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
3183 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
3184 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
3185 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
3187 -print-multiarch Display the target's normalized GNU triplet, used as\n\
3188 a component in the library path\n"), stdout);
3189 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
3191 -print-multi-lib Display the mapping between command line options and\n\
3192 multiple library search directories\n"), stdout);
3193 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
3194 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout);
3195 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout);
3196 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3197 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3198 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3199 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
3200 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
3201 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3202 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3203 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout);
3205 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
3206 prefixes to other gcc components\n"), stdout);
3207 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3208 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3209 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3210 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3212 --sysroot=<directory> Use <directory> as the root directory for headers\n\
3213 and libraries\n"), stdout);
3214 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3215 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3216 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3217 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3218 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3219 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3220 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3221 fputs (_(" -pie Create a position independent executable\n"), stdout);
3222 fputs (_(" -shared Create a shared library\n"), stdout);
3224 -x <language> Specify the language of the following input files\n\
3225 Permissible languages include: c c++ assembler none\n\
3226 'none' means revert to the default behavior of\n\
3227 guessing the language based on the file's extension\n\
3231 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3232 passed on to the various sub-processes invoked by %s. In order to pass\n\
3233 other options on to these processes the -W<letter> options must be used.\n\
3236 /* The rest of the options are displayed by invocations of the various
3241 add_preprocessor_option (const char *option, int len)
3243 preprocessor_options.safe_push (save_string (option, len));
3247 add_assembler_option (const char *option, int len)
3249 assembler_options.safe_push (save_string (option, len));
3253 add_linker_option (const char *option, int len)
3255 linker_options.safe_push (save_string (option, len));
3258 /* Allocate space for an input file in infiles. */
3263 if (n_infiles_alloc == 0)
3265 n_infiles_alloc = 16;
3266 infiles = XNEWVEC (struct infile, n_infiles_alloc);
3268 else if (n_infiles_alloc == n_infiles)
3270 n_infiles_alloc *= 2;
3271 infiles = XRESIZEVEC (struct infile, infiles, n_infiles_alloc);
3275 /* Store an input file with the given NAME and LANGUAGE in
3279 add_infile (const char *name, const char *language)
3282 infiles[n_infiles].name = name;
3283 infiles[n_infiles++].language = language;
3286 /* Allocate space for a switch in switches. */
3291 if (n_switches_alloc == 0)
3293 n_switches_alloc = 16;
3294 switches = XNEWVEC (struct switchstr, n_switches_alloc);
3296 else if (n_switches_alloc == n_switches)
3298 n_switches_alloc *= 2;
3299 switches = XRESIZEVEC (struct switchstr, switches, n_switches_alloc);
3303 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3304 as validated if VALIDATED and KNOWN if it is an internal switch. */
3307 save_switch (const char *opt, size_t n_args, const char *const *args,
3308 bool validated, bool known)
3311 switches[n_switches].part1 = opt + 1;
3313 switches[n_switches].args = 0;
3316 switches[n_switches].args = XNEWVEC (const char *, n_args + 1);
3317 memcpy (switches[n_switches].args, args, n_args * sizeof (const char *));
3318 switches[n_switches].args[n_args] = NULL;
3321 switches[n_switches].live_cond = 0;
3322 switches[n_switches].validated = validated;
3323 switches[n_switches].known = known;
3324 switches[n_switches].ordering = 0;
3328 /* Handle an option DECODED that is unknown to the option-processing
3332 driver_unknown_option_callback (const struct cl_decoded_option *decoded)
3334 const char *opt = decoded->arg;
3335 if (opt[1] == 'W' && opt[2] == 'n' && opt[3] == 'o' && opt[4] == '-'
3336 && !(decoded->errors & CL_ERR_NEGATIVE))
3338 /* Leave unknown -Wno-* options for the compiler proper, to be
3339 diagnosed only if there are warnings. */
3340 save_switch (decoded->canonical_option[0],
3341 decoded->canonical_option_num_elements - 1,
3342 &decoded->canonical_option[1], false, true);
3345 if (decoded->opt_index == OPT_SPECIAL_unknown)
3347 /* Give it a chance to define it a a spec file. */
3348 save_switch (decoded->canonical_option[0],
3349 decoded->canonical_option_num_elements - 1,
3350 &decoded->canonical_option[1], false, false);
3357 /* Handle an option DECODED that is not marked as CL_DRIVER.
3358 LANG_MASK will always be CL_DRIVER. */
3361 driver_wrong_lang_callback (const struct cl_decoded_option *decoded,
3362 unsigned int lang_mask ATTRIBUTE_UNUSED)
3364 /* At this point, non-driver options are accepted (and expected to
3365 be passed down by specs) unless marked to be rejected by the
3366 driver. Options to be rejected by the driver but accepted by the
3367 compilers proper are treated just like completely unknown
3369 const struct cl_option *option = &cl_options[decoded->opt_index];
3371 if (option->cl_reject_driver)
3372 error ("unrecognized command line option %qs",
3373 decoded->orig_option_with_args_text);
3375 save_switch (decoded->canonical_option[0],
3376 decoded->canonical_option_num_elements - 1,
3377 &decoded->canonical_option[1], false, true);
3380 static const char *spec_lang = 0;
3381 static int last_language_n_infiles;
3383 /* Parse -foffload option argument. */
3386 handle_foffload_option (const char *arg)
3388 const char *c, *cur, *n, *next, *end;
3391 /* If option argument starts with '-' then no target is specified and we
3392 do not need to parse it. */
3396 end = strchr (arg, '=');
3398 end = strchr (arg, '\0');
3403 next = strchr (cur, ',');
3406 next = (next > end) ? end : next;
3408 target = XNEWVEC (char, next - cur + 1);
3409 memcpy (target, cur, next - cur);
3410 target[next - cur] = '\0';
3412 /* If 'disable' is passed to the option, stop parsing the option and clean
3413 the list of offload targets. */
3414 if (strcmp (target, "disable") == 0)
3416 free (offload_targets);
3417 offload_targets = xstrdup ("");
3421 /* Check that GCC is configured to support the offload target. */
3422 c = OFFLOAD_TARGETS;
3425 n = strchr (c, ',');
3427 n = strchr (c, '\0');
3429 if (next - cur == n - c && strncmp (target, c, n - c) == 0)
3432 c = *n ? n + 1 : NULL;
3436 fatal_error (input_location,
3437 "GCC is not configured to support %s as offload target",
3440 if (!offload_targets)
3442 offload_targets = target;
3447 /* Check that the target hasn't already presented in the list. */
3448 c = offload_targets;
3451 n = strchr (c, ':');
3453 n = strchr (c, '\0');
3455 if (next - cur == n - c && strncmp (c, target, n - c) == 0)
3462 /* If duplicate is not found, append the target to the list. */
3465 size_t offload_targets_len = strlen (offload_targets);
3467 = XRESIZEVEC (char, offload_targets,
3468 offload_targets_len + next - cur + 2);
3469 if (offload_targets_len)
3470 offload_targets[offload_targets_len++] = ':';
3471 memcpy (offload_targets + offload_targets_len, target, next - cur);
3476 XDELETEVEC (target);
3480 /* Handle a driver option; arguments and return value as for
3484 driver_handle_option (struct gcc_options *opts,
3485 struct gcc_options *opts_set,
3486 const struct cl_decoded_option *decoded,
3487 unsigned int lang_mask ATTRIBUTE_UNUSED, int kind,
3489 const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED,
3490 diagnostic_context *dc)
3492 size_t opt_index = decoded->opt_index;
3493 const char *arg = decoded->arg;
3494 const char *compare_debug_replacement_opt;
3495 int value = decoded->value;
3496 bool validated = false;
3497 bool do_save = true;
3499 gcc_assert (opts == &global_options);
3500 gcc_assert (opts_set == &global_options_set);
3501 gcc_assert (kind == DK_UNSPECIFIED);
3502 gcc_assert (loc == UNKNOWN_LOCATION);
3503 gcc_assert (dc == global_dc);
3509 struct spec_list *sl;
3511 for (sl = specs; sl; sl = sl->next)
3512 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3513 if (link_command_spec)
3514 printf ("*link_command:\n%s\n\n", link_command_spec);
3518 case OPT_dumpversion:
3519 printf ("%s\n", spec_version);
3522 case OPT_dumpmachine:
3523 printf ("%s\n", spec_machine);
3529 /* CPP driver cannot obtain switch from cc1_options. */
3531 add_preprocessor_option ("--version", strlen ("--version"));
3532 add_assembler_option ("--version", strlen ("--version"));
3533 add_linker_option ("--version", strlen ("--version"));
3537 print_help_list = 1;
3539 /* CPP driver cannot obtain switch from cc1_options. */
3541 add_preprocessor_option ("--help", 6);
3542 add_assembler_option ("--help", 6);
3543 add_linker_option ("--help", 6);
3547 print_subprocess_help = 2;
3550 case OPT__target_help:
3551 print_subprocess_help = 1;
3553 /* CPP driver cannot obtain switch from cc1_options. */
3555 add_preprocessor_option ("--target-help", 13);
3556 add_assembler_option ("--target-help", 13);
3557 add_linker_option ("--target-help", 13);
3560 case OPT__no_sysroot_suffix:
3561 case OPT_pass_exit_codes:
3562 case OPT_print_search_dirs:
3563 case OPT_print_file_name_:
3564 case OPT_print_prog_name_:
3565 case OPT_print_multi_lib:
3566 case OPT_print_multi_directory:
3567 case OPT_print_sysroot:
3568 case OPT_print_multi_os_directory:
3569 case OPT_print_multiarch:
3570 case OPT_print_sysroot_headers_suffix:
3573 /* These options set the variables specified in common.opt
3574 automatically, and do not need to be saved for spec
3579 case OPT_print_libgcc_file_name:
3580 print_file_name = "libgcc.a";
3584 case OPT_fuse_ld_bfd:
3588 case OPT_fuse_ld_gold:
3592 case OPT_fcompare_debug_second:
3593 compare_debug_second = 1;
3596 case OPT_fcompare_debug:
3600 compare_debug_replacement_opt = "-fcompare-debug=";
3602 goto compare_debug_with_arg;
3605 compare_debug_replacement_opt = "-fcompare-debug=-gtoggle";
3607 goto compare_debug_with_arg;
3614 case OPT_fcompare_debug_:
3615 compare_debug_replacement_opt = decoded->canonical_option[0];
3616 compare_debug_with_arg:
3617 gcc_assert (decoded->canonical_option_num_elements == 1);
3618 gcc_assert (arg != NULL);
3623 if (compare_debug < 0)
3624 compare_debug_opt = NULL;
3626 compare_debug_opt = arg;
3627 save_switch (compare_debug_replacement_opt, 0, NULL, validated, true);
3630 case OPT_fdiagnostics_color_:
3631 diagnostic_color_init (dc, value);
3637 /* Pass the rest of this option to the assembler. */
3639 /* Split the argument at commas. */
3641 for (j = 0; arg[j]; j++)
3644 add_assembler_option (arg + prev, j - prev);
3648 /* Record the part after the last comma. */
3649 add_assembler_option (arg + prev, j - prev);
3657 /* Pass the rest of this option to the preprocessor. */
3659 /* Split the argument at commas. */
3661 for (j = 0; arg[j]; j++)
3664 add_preprocessor_option (arg + prev, j - prev);
3668 /* Record the part after the last comma. */
3669 add_preprocessor_option (arg + prev, j - prev);
3677 /* Split the argument at commas. */
3679 for (j = 0; arg[j]; j++)
3682 add_infile (save_string (arg + prev, j - prev), "*");
3685 /* Record the part after the last comma. */
3686 add_infile (arg + prev, "*");
3692 add_infile (arg, "*");
3696 case OPT_Xpreprocessor:
3697 add_preprocessor_option (arg, strlen (arg));
3701 case OPT_Xassembler:
3702 add_assembler_option (arg, strlen (arg));
3707 /* POSIX allows separation of -l and the lib arg; canonicalize
3708 by concatenating -l with its arg */
3709 add_infile (concat ("-l", arg, NULL), "*");
3714 /* Similarly, canonicalize -L for linkers that may not accept
3715 separate arguments. */
3716 save_switch (concat ("-L", arg, NULL), 0, NULL, validated, true);
3721 save_switch (concat ("-F", arg, NULL), 0, NULL, validated, true);
3724 case OPT_save_temps:
3725 save_temps_flag = SAVE_TEMPS_CWD;
3729 case OPT_save_temps_:
3730 if (strcmp (arg, "cwd") == 0)
3731 save_temps_flag = SAVE_TEMPS_CWD;
3732 else if (strcmp (arg, "obj") == 0
3733 || strcmp (arg, "object") == 0)
3734 save_temps_flag = SAVE_TEMPS_OBJ;
3736 fatal_error (input_location, "%qs is an unknown -save-temps option",
3737 decoded->orig_option_with_args_text);
3740 case OPT_no_canonical_prefixes:
3741 /* Already handled as a special case, so ignored here. */
3747 /* These options set the variables specified in common.opt
3748 automatically, but do need to be saved for spec
3754 struct user_specs *user = XNEW (struct user_specs);
3756 user->next = (struct user_specs *) 0;
3757 user->filename = arg;
3758 if (user_specs_tail)
3759 user_specs_tail->next = user;
3761 user_specs_head = user;
3762 user_specs_tail = user;
3768 target_system_root = arg;
3769 target_system_root_changed = 1;
3774 if (report_times_to_file)
3775 fclose (report_times_to_file);
3776 report_times_to_file = fopen (arg, "a");
3782 This is similar to -v except that there is no execution
3783 of the commands and the echoed arguments are quoted. It
3784 is intended for use in shell scripts to capture the
3785 driver-generated command line. */
3786 verbose_only_flag++;
3793 size_t len = strlen (arg);
3795 /* Catch the case where the user has forgotten to append a
3796 directory separator to the path. Note, they may be using
3797 -B to add an executable name prefix, eg "i386-elf-", in
3798 order to distinguish between multiple installations of
3799 GCC in the same directory. Hence we must check to see
3800 if appending a directory separator actually makes a
3801 valid directory name. */
3802 if (!IS_DIR_SEPARATOR (arg[len - 1])
3803 && is_directory (arg, false))
3805 char *tmp = XNEWVEC (char, len + 2);
3807 tmp[len] = DIR_SEPARATOR;
3812 add_prefix (&exec_prefixes, arg, NULL,
3813 PREFIX_PRIORITY_B_OPT, 0, 0);
3814 add_prefix (&startfile_prefixes, arg, NULL,
3815 PREFIX_PRIORITY_B_OPT, 0, 0);
3816 add_prefix (&include_prefixes, arg, NULL,
3817 PREFIX_PRIORITY_B_OPT, 0, 0);
3824 if (!strcmp (spec_lang, "none"))
3825 /* Suppress the warning if -xnone comes after the last input
3826 file, because alternate command interfaces like g++ might
3827 find it useful to place -xnone after each input file. */
3830 last_language_n_infiles = n_infiles;
3836 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3837 arg = convert_filename (arg, ! have_c, 0);
3840 /* Save the output name in case -save-temps=obj was used. */
3841 save_temps_prefix = xstrdup (arg);
3842 /* On some systems, ld cannot handle "-o" without a space. So
3843 split the option from its argument. */
3844 save_switch ("-o", 1, &arg, validated, true);
3847 case OPT_static_libgcc:
3848 case OPT_shared_libgcc:
3849 case OPT_static_libgfortran:
3850 case OPT_static_libstdc__:
3851 /* These are always valid, since gcc.c itself understands the
3852 first two, gfortranspec.c understands -static-libgfortran and
3853 g++spec.c understands -static-libstdc++ */
3862 handle_foffload_option (arg);
3866 /* Various driver options need no special processing at this
3867 point, having been handled in a prescan above or being
3868 handled by specs. */
3873 save_switch (decoded->canonical_option[0],
3874 decoded->canonical_option_num_elements - 1,
3875 &decoded->canonical_option[1], validated, true);
3879 /* Put the driver's standard set of option handlers in *HANDLERS. */
3882 set_option_handlers (struct cl_option_handlers *handlers)
3884 handlers->unknown_option_callback = driver_unknown_option_callback;
3885 handlers->wrong_lang_callback = driver_wrong_lang_callback;
3886 handlers->num_handlers = 3;
3887 handlers->handlers[0].handler = driver_handle_option;
3888 handlers->handlers[0].mask = CL_DRIVER;
3889 handlers->handlers[1].handler = common_handle_option;
3890 handlers->handlers[1].mask = CL_COMMON;
3891 handlers->handlers[2].handler = target_handle_option;
3892 handlers->handlers[2].mask = CL_TARGET;
3895 /* Create the vector `switches' and its contents.
3896 Store its length in `n_switches'. */
3899 process_command (unsigned int decoded_options_count,
3900 struct cl_decoded_option *decoded_options)
3904 char *tooldir_prefix, *tooldir_prefix2;
3905 char *(*get_relative_prefix) (const char *, const char *,
3906 const char *) = NULL;
3907 struct cl_option_handlers handlers;
3910 gcc_exec_prefix = getenv ("GCC_EXEC_PREFIX");
3914 added_libraries = 0;
3916 /* Figure compiler version from version string. */
3918 compiler_version = temp1 = xstrdup (version_string);
3920 for (; *temp1; ++temp1)
3929 /* Handle any -no-canonical-prefixes flag early, to assign the function
3930 that builds relative prefixes. This function creates default search
3931 paths that are needed later in normal option handling. */
3933 for (j = 1; j < decoded_options_count; j++)
3935 if (decoded_options[j].opt_index == OPT_no_canonical_prefixes)
3937 get_relative_prefix = make_relative_prefix_ignore_links;
3941 if (! get_relative_prefix)
3942 get_relative_prefix = make_relative_prefix;
3944 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3945 see if we can create it from the pathname specified in
3946 decoded_options[0].arg. */
3948 gcc_libexec_prefix = standard_libexec_prefix;
3950 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3951 if (!gcc_exec_prefix)
3953 #if 0 /* Never use relative prefix (not bootstrapped) */
3954 gcc_exec_prefix = get_relative_prefix (decoded_options[0].arg,
3955 standard_bindir_prefix,
3956 standard_exec_prefix);
3957 gcc_libexec_prefix = get_relative_prefix (decoded_options[0].arg,
3958 standard_bindir_prefix,
3959 standard_libexec_prefix);
3960 if (gcc_exec_prefix)
3961 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3966 /* make_relative_prefix requires a program name, but
3967 GCC_EXEC_PREFIX is typically a directory name with a trailing
3968 / (which is ignored by make_relative_prefix), so append a
3970 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL);
3971 gcc_libexec_prefix = get_relative_prefix (tmp_prefix,
3972 standard_exec_prefix,
3973 standard_libexec_prefix);
3975 /* The path is unrelocated, so fallback to the original setting. */
3976 if (!gcc_libexec_prefix)
3977 gcc_libexec_prefix = standard_libexec_prefix;
3983 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3984 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3985 or an automatically created GCC_EXEC_PREFIX from
3986 decoded_options[0].arg. */
3988 /* Do language-specific adjustment/addition of flags. */
3989 lang_specific_driver (&decoded_options, &decoded_options_count,
3992 if (gcc_exec_prefix)
3994 int len = strlen (gcc_exec_prefix);
3996 if (len > (int) sizeof ("/lib/gcc/") - 1
3997 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3999 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
4000 if (IS_DIR_SEPARATOR (*temp)
4001 && filename_ncmp (temp + 1, "lib", 3) == 0
4002 && IS_DIR_SEPARATOR (temp[4])
4003 && filename_ncmp (temp + 5, "gcc", 3) == 0)
4004 len -= sizeof ("/lib/gcc/") - 1;
4007 #if 0 /* Bad Paths */
4008 set_std_prefix (gcc_exec_prefix, len);
4009 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
4010 PREFIX_PRIORITY_LAST, 0, 0);
4011 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
4012 PREFIX_PRIORITY_LAST, 0, 0);
4016 /* COMPILER_PATH and LIBRARY_PATH have values
4017 that are lists of directory names with colons. */
4019 temp = getenv ("COMPILER_PATH");
4022 const char *startp, *endp;
4023 char *nstore = (char *) alloca (strlen (temp) + 3);
4025 startp = endp = temp;
4028 if (*endp == PATH_SEPARATOR || *endp == 0)
4030 strncpy (nstore, startp, endp - startp);
4032 strcpy (nstore, concat (".", dir_separator_str, NULL));
4033 else if (!IS_DIR_SEPARATOR (endp[-1]))
4035 nstore[endp - startp] = DIR_SEPARATOR;
4036 nstore[endp - startp + 1] = 0;
4039 nstore[endp - startp] = 0;
4040 add_prefix (&exec_prefixes, nstore, 0,
4041 PREFIX_PRIORITY_LAST, 0, 0);
4042 add_prefix (&include_prefixes, nstore, 0,
4043 PREFIX_PRIORITY_LAST, 0, 0);
4046 endp = startp = endp + 1;
4053 temp = getenv (LIBRARY_PATH_ENV);
4054 if (temp && *cross_compile == '0')
4056 const char *startp, *endp;
4057 char *nstore = (char *) alloca (strlen (temp) + 3);
4059 startp = endp = temp;
4062 if (*endp == PATH_SEPARATOR || *endp == 0)
4064 strncpy (nstore, startp, endp - startp);
4066 strcpy (nstore, concat (".", dir_separator_str, NULL));
4067 else if (!IS_DIR_SEPARATOR (endp[-1]))
4069 nstore[endp - startp] = DIR_SEPARATOR;
4070 nstore[endp - startp + 1] = 0;
4073 nstore[endp - startp] = 0;
4074 add_prefix (&startfile_prefixes, nstore, NULL,
4075 PREFIX_PRIORITY_LAST, 0, 1);
4078 endp = startp = endp + 1;
4085 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
4086 temp = getenv ("LPATH");
4087 if (temp && *cross_compile == '0')
4089 const char *startp, *endp;
4090 char *nstore = (char *) alloca (strlen (temp) + 3);
4092 startp = endp = temp;
4095 if (*endp == PATH_SEPARATOR || *endp == 0)
4097 strncpy (nstore, startp, endp - startp);
4099 strcpy (nstore, concat (".", dir_separator_str, NULL));
4100 else if (!IS_DIR_SEPARATOR (endp[-1]))
4102 nstore[endp - startp] = DIR_SEPARATOR;
4103 nstore[endp - startp + 1] = 0;
4106 nstore[endp - startp] = 0;
4107 add_prefix (&startfile_prefixes, nstore, NULL,
4108 PREFIX_PRIORITY_LAST, 0, 1);
4111 endp = startp = endp + 1;
4118 /* Process the options and store input files and switches in their
4121 last_language_n_infiles = -1;
4123 set_option_handlers (&handlers);
4125 for (j = 1; j < decoded_options_count; j++)
4127 switch (decoded_options[j].opt_index)
4139 for (j = 1; j < decoded_options_count; j++)
4141 if (decoded_options[j].opt_index == OPT_SPECIAL_input_file)
4143 const char *arg = decoded_options[j].arg;
4144 const char *p = strrchr (arg, '@');
4148 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4149 arg = convert_filename (arg, 0, access (arg, F_OK));
4151 /* For LTO static archive support we handle input file
4152 specifications that are composed of a filename and
4153 an offset like FNAME@OFFSET. */
4156 && sscanf (p, "@%li%n", &offset, &consumed) >= 1
4157 && strlen (p) == (unsigned int)consumed)
4159 fname = (char *)xmalloc (p - arg + 1);
4160 memcpy (fname, arg, p - arg);
4161 fname[p - arg] = '\0';
4162 /* Only accept non-stdin and existing FNAME parts, otherwise
4163 try with the full name. */
4164 if (strcmp (fname, "-") == 0 || access (fname, F_OK) < 0)
4167 fname = xstrdup (arg);
4171 fname = xstrdup (arg);
4173 if (strcmp (fname, "-") != 0 && access (fname, F_OK) < 0)
4174 perror_with_name (fname);
4176 add_infile (arg, spec_lang);
4182 read_cmdline_option (&global_options, &global_options_set,
4183 decoded_options + j, UNKNOWN_LOCATION,
4184 CL_DRIVER, &handlers, global_dc);
4188 && strcmp (output_file, "-") != 0
4189 && strcmp (output_file, HOST_BIT_BUCKET) != 0)
4192 for (i = 0; i < n_infiles; i++)
4193 if ((!infiles[i].language || infiles[i].language[0] != '*')
4194 && canonical_filename_eq (infiles[i].name, output_file))
4195 fatal_error (input_location,
4196 "input file %qs is the same as output file",
4200 /* If -save-temps=obj and -o name, create the prefix to use for %b.
4201 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
4202 if (save_temps_flag == SAVE_TEMPS_OBJ && save_temps_prefix != NULL)
4204 save_temps_length = strlen (save_temps_prefix);
4205 temp = strrchr (lbasename (save_temps_prefix), '.');
4208 save_temps_length -= strlen (temp);
4209 save_temps_prefix[save_temps_length] = '\0';
4213 else if (save_temps_prefix != NULL)
4215 free (save_temps_prefix);
4216 save_temps_prefix = NULL;
4219 if (save_temps_flag && use_pipes)
4221 /* -save-temps overrides -pipe, so that temp files are produced */
4222 if (save_temps_flag)
4223 warning (0, "-pipe ignored because -save-temps specified");
4229 const char *gcd = getenv ("GCC_COMPARE_DEBUG");
4231 if (gcd && gcd[0] == '-')
4234 compare_debug_opt = gcd;
4236 else if (gcd && *gcd && strcmp (gcd, "0"))
4239 compare_debug_opt = "-gtoggle";
4242 else if (compare_debug < 0)
4245 gcc_assert (!compare_debug_opt);
4248 /* Set up the search paths. We add directories that we expect to
4249 contain GNU Toolchain components before directories specified by
4250 the machine description so that we will find GNU components (like
4251 the GNU assembler) before those of the host system. */
4253 /* If we don't know where the toolchain has been installed, use the
4254 configured-in locations. */
4255 if (!gcc_exec_prefix)
4258 add_prefix (&exec_prefixes, standard_libexec_prefix, NULL,
4259 PREFIX_PRIORITY_LAST, 0, 0);
4260 # if 0 /* Bad paths */
4261 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
4262 PREFIX_PRIORITY_LAST, 1, 0);
4263 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
4264 PREFIX_PRIORITY_LAST, 2, 0);
4265 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
4266 PREFIX_PRIORITY_LAST, 2, 0);
4269 #if 0 /* Bad paths */
4270 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
4271 PREFIX_PRIORITY_LAST, 1, 0);
4275 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix));
4276 tooldir_prefix2 = concat (tooldir_base_prefix, spec_host_machine,
4277 dir_separator_str, NULL);
4279 /* Look for tools relative to the location from which the driver is
4280 running, or, if that is not available, the configured prefix. */
4282 = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
4283 spec_host_machine, dir_separator_str, spec_version,
4284 accel_dir_suffix, dir_separator_str, tooldir_prefix2, NULL);
4285 free (tooldir_prefix2);
4287 #if 0 /* Bad paths */
4288 add_prefix (&exec_prefixes,
4289 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
4290 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0);
4291 add_prefix (&startfile_prefixes,
4292 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
4293 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1);
4295 free (tooldir_prefix);
4297 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
4298 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
4299 then consider it to relocate with the rest of the GCC installation
4300 if GCC_EXEC_PREFIX is set.
4301 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
4302 if (target_system_root && !target_system_root_changed && gcc_exec_prefix)
4304 char *tmp_prefix = get_relative_prefix (decoded_options[0].arg,
4305 standard_bindir_prefix,
4306 target_system_root);
4307 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
4309 target_system_root = tmp_prefix;
4310 target_system_root_changed = 1;
4315 /* More prefixes are enabled in main, after we read the specs file
4316 and determine whether this is cross-compilation or not. */
4318 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4319 warning (0, "%<-x %s%> after last input file has no effect", spec_lang);
4321 /* Synthesize -fcompare-debug flag from the GCC_COMPARE_DEBUG
4322 environment variable. */
4323 if (compare_debug == 2 || compare_debug == 3)
4325 const char *opt = concat ("-fcompare-debug=", compare_debug_opt, NULL);
4326 save_switch (opt, 0, NULL, false, true);
4330 /* Ensure we only invoke each subprocess once. */
4331 if (print_subprocess_help || print_help_list || print_version)
4335 /* Create a dummy input file, so that we can pass
4336 the help option on to the various sub-processes. */
4337 add_infile ("help-dummy", "c");
4341 switches[n_switches].part1 = 0;
4343 infiles[n_infiles].name = 0;
4346 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4347 and place that in the environment. */
4350 set_collect_gcc_options (void)
4355 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4357 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4358 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4361 for (i = 0; (int) i < n_switches; i++)
4363 const char *const *args;
4366 obstack_grow (&collect_obstack, " ", 1);
4370 /* Ignore elided switches. */
4371 if ((switches[i].live_cond
4372 & (SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC))
4376 obstack_grow (&collect_obstack, "'-", 2);
4377 q = switches[i].part1;
4378 while ((p = strchr (q, '\'')))
4380 obstack_grow (&collect_obstack, q, p - q);
4381 obstack_grow (&collect_obstack, "'\\''", 4);
4384 obstack_grow (&collect_obstack, q, strlen (q));
4385 obstack_grow (&collect_obstack, "'", 1);
4387 for (args = switches[i].args; args && *args; args++)
4389 obstack_grow (&collect_obstack, " '", 2);
4391 while ((p = strchr (q, '\'')))
4393 obstack_grow (&collect_obstack, q, p - q);
4394 obstack_grow (&collect_obstack, "'\\''", 4);
4397 obstack_grow (&collect_obstack, q, strlen (q));
4398 obstack_grow (&collect_obstack, "'", 1);
4401 obstack_grow (&collect_obstack, "\0", 1);
4402 xputenv (XOBFINISH (&collect_obstack, char *));
4405 /* Process a spec string, accumulating and running commands. */
4407 /* These variables describe the input file name.
4408 input_file_number is the index on outfiles of this file,
4409 so that the output file name can be stored for later use by %o.
4410 input_basename is the start of the part of the input file
4411 sans all directory names, and basename_length is the number
4412 of characters starting there excluding the suffix .c or whatever. */
4414 static const char *gcc_input_filename;
4415 static int input_file_number;
4416 size_t input_filename_length;
4417 static int basename_length;
4418 static int suffixed_basename_length;
4419 static const char *input_basename;
4420 static const char *input_suffix;
4421 #ifndef HOST_LACKS_INODE_NUMBERS
4422 static struct stat input_stat;
4424 static int input_stat_set;
4426 /* The compiler used to process the current input file. */
4427 static struct compiler *input_file_compiler;
4429 /* These are variables used within do_spec and do_spec_1. */
4431 /* Nonzero if an arg has been started and not yet terminated
4432 (with space, tab or newline). */
4433 static int arg_going;
4435 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4436 is a temporary file name. */
4437 static int delete_this_arg;
4439 /* Nonzero means %w has been seen; the next arg to be terminated
4440 is the output file name of this compilation. */
4441 static int this_is_output_file;
4443 /* Nonzero means %s has been seen; the next arg to be terminated
4444 is the name of a library file and we should try the standard
4445 search dirs for it. */
4446 static int this_is_library_file;
4448 /* Nonzero means %T has been seen; the next arg to be terminated
4449 is the name of a linker script and we should try all of the
4450 standard search dirs for it. If it is found insert a --script
4451 command line switch and then substitute the full path in place,
4452 otherwise generate an error message. */
4453 static int this_is_linker_script;
4455 /* Nonzero means that the input of this command is coming from a pipe. */
4456 static int input_from_pipe;
4458 /* Nonnull means substitute this for any suffix when outputting a switches
4460 static const char *suffix_subst;
4462 /* If there is an argument being accumulated, terminate it and store it. */
4465 end_going_arg (void)
4471 obstack_1grow (&obstack, 0);
4472 string = XOBFINISH (&obstack, const char *);
4473 if (this_is_library_file)
4474 string = find_file (string);
4475 if (this_is_linker_script)
4477 char * full_script_path = find_a_file (&startfile_prefixes, string, R_OK, true);
4479 if (full_script_path == NULL)
4481 error ("unable to locate default linker script %qs in the library search paths", string);
4482 /* Script was not found on search path. */
4485 store_arg ("--script", false, false);
4486 string = full_script_path;
4488 store_arg (string, delete_this_arg, this_is_output_file);
4489 if (this_is_output_file)
4490 outfiles[input_file_number] = string;
4496 /* Parse the WRAPPER string which is a comma separated list of the command line
4497 and insert them into the beginning of argbuf. */
4500 insert_wrapper (const char *wrapper)
4504 char *buf = xstrdup (wrapper);
4506 unsigned int old_length = argbuf.length ();
4514 while ((p = strchr (p, ',')) != NULL);
4516 argbuf.safe_grow (old_length + n);
4517 memmove (argbuf.address () + n,
4519 old_length * sizeof (const_char_p));
4533 while ((p = strchr (p, ',')) != NULL);
4534 gcc_assert (i == n);
4537 /* Process the spec SPEC and run the commands specified therein.
4538 Returns 0 if the spec is successfully processed; -1 if failed. */
4541 do_spec (const char *spec)
4545 value = do_spec_2 (spec);
4547 /* Force out any unfinished command.
4548 If -pipe, this forces out the last command if it ended in `|'. */
4551 if (argbuf.length () > 0
4552 && !strcmp (argbuf.last (), "|"))
4555 set_collect_gcc_options ();
4557 if (argbuf.length () > 0)
4565 do_spec_2 (const char *spec)
4571 delete_this_arg = 0;
4572 this_is_output_file = 0;
4573 this_is_library_file = 0;
4574 this_is_linker_script = 0;
4575 input_from_pipe = 0;
4576 suffix_subst = NULL;
4578 result = do_spec_1 (spec, 0, NULL);
4586 /* Process the given spec string and add any new options to the end
4587 of the switches/n_switches array. */
4590 do_option_spec (const char *name, const char *spec)
4592 unsigned int i, value_count, value_len;
4593 const char *p, *q, *value;
4594 char *tmp_spec, *tmp_spec_p;
4596 if (configure_default_options[0].name == NULL)
4599 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4600 if (strcmp (configure_default_options[i].name, name) == 0)
4602 if (i == ARRAY_SIZE (configure_default_options))
4605 value = configure_default_options[i].value;
4606 value_len = strlen (value);
4608 /* Compute the size of the final spec. */
4611 while ((p = strstr (p, "%(VALUE)")) != NULL)
4617 /* Replace each %(VALUE) by the specified value. */
4618 tmp_spec = (char *) alloca (strlen (spec) + 1
4619 + value_count * (value_len - strlen ("%(VALUE)")));
4620 tmp_spec_p = tmp_spec;
4622 while ((p = strstr (q, "%(VALUE)")) != NULL)
4624 memcpy (tmp_spec_p, q, p - q);
4625 tmp_spec_p = tmp_spec_p + (p - q);
4626 memcpy (tmp_spec_p, value, value_len);
4627 tmp_spec_p += value_len;
4628 q = p + strlen ("%(VALUE)");
4630 strcpy (tmp_spec_p, q);
4632 do_self_spec (tmp_spec);
4635 /* Process the given spec string and add any new options to the end
4636 of the switches/n_switches array. */
4639 do_self_spec (const char *spec)
4644 do_spec_1 (" ", 0, NULL);
4646 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4647 do_self_specs adds the replacements to switches array, so it shouldn't
4648 be processed afterwards. */
4649 for (i = 0; i < n_switches; i++)
4650 if ((switches[i].live_cond & SWITCH_IGNORE))
4651 switches[i].live_cond |= SWITCH_IGNORE_PERMANENTLY;
4653 if (argbuf.length () > 0)
4655 const char **argbuf_copy;
4656 struct cl_decoded_option *decoded_options;
4657 struct cl_option_handlers handlers;
4658 unsigned int decoded_options_count;
4661 /* Create a copy of argbuf with a dummy argv[0] entry for
4662 decode_cmdline_options_to_array. */
4663 argbuf_copy = XNEWVEC (const char *,
4664 argbuf.length () + 1);
4665 argbuf_copy[0] = "";
4666 memcpy (argbuf_copy + 1, argbuf.address (),
4667 argbuf.length () * sizeof (const char *));
4669 decode_cmdline_options_to_array (argbuf.length () + 1,
4671 CL_DRIVER, &decoded_options,
4672 &decoded_options_count);
4675 set_option_handlers (&handlers);
4677 for (j = 1; j < decoded_options_count; j++)
4679 switch (decoded_options[j].opt_index)
4681 case OPT_SPECIAL_input_file:
4682 /* Specs should only generate options, not input
4684 if (strcmp (decoded_options[j].arg, "-") != 0)
4685 fatal_error (input_location,
4686 "switch %qs does not start with %<-%>",
4687 decoded_options[j].arg);
4689 fatal_error (input_location,
4690 "spec-generated switch is just %<-%>");
4693 case OPT_fcompare_debug_second:
4694 case OPT_fcompare_debug:
4695 case OPT_fcompare_debug_:
4697 /* Avoid duplicate processing of some options from
4698 compare-debug specs; just save them here. */
4699 save_switch (decoded_options[j].canonical_option[0],
4700 (decoded_options[j].canonical_option_num_elements
4702 &decoded_options[j].canonical_option[1], false, true);
4706 read_cmdline_option (&global_options, &global_options_set,
4707 decoded_options + j, UNKNOWN_LOCATION,
4708 CL_DRIVER, &handlers, global_dc);
4713 free (decoded_options);
4716 switches[n_switches].part1 = 0;
4720 /* Callback for processing %D and %I specs. */
4722 struct spec_path_info {
4727 bool separate_options;
4731 spec_path (char *path, void *data)
4733 struct spec_path_info *info = (struct spec_path_info *) data;
4737 if (info->omit_relative && !IS_ABSOLUTE_PATH (path))
4740 if (info->append_len != 0)
4742 len = strlen (path);
4743 memcpy (path + len, info->append, info->append_len + 1);
4746 if (!is_directory (path, true))
4749 do_spec_1 (info->option, 1, NULL);
4750 if (info->separate_options)
4751 do_spec_1 (" ", 0, NULL);
4753 if (info->append_len == 0)
4755 len = strlen (path);
4756 save = path[len - 1];
4757 if (IS_DIR_SEPARATOR (path[len - 1]))
4758 path[len - 1] = '\0';
4761 do_spec_1 (path, 1, NULL);
4762 do_spec_1 (" ", 0, NULL);
4764 /* Must not damage the original path. */
4765 if (info->append_len == 0)
4766 path[len - 1] = save;
4771 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4775 create_at_file (char **argv)
4777 char *temp_file = make_temp_file ("");
4778 char *at_argument = concat ("@", temp_file, NULL);
4779 FILE *f = fopen (temp_file, "w");
4783 fatal_error (input_location, "could not open temporary response file %s",
4786 status = writeargv (argv, f);
4789 fatal_error (input_location,
4790 "could not write to temporary response file %s",
4793 status = fclose (f);
4796 fatal_error (input_location, "could not close temporary response file %s",
4799 store_arg (at_argument, 0, 0);
4801 record_temp_file (temp_file, !save_temps_flag, !save_temps_flag);
4804 /* True if we should compile INFILE. */
4807 compile_input_file_p (struct infile *infile)
4809 if ((!infile->language) || (infile->language[0] != '*'))
4810 if (infile->incompiler == input_file_compiler)
4815 /* Process each member of VEC as a spec. */
4818 do_specs_vec (vec<char_p> vec)
4823 FOR_EACH_VEC_ELT (vec, ix, opt)
4825 do_spec_1 (opt, 1, NULL);
4826 /* Make each accumulated option a separate argument. */
4827 do_spec_1 (" ", 0, NULL);
4831 /* Process the sub-spec SPEC as a portion of a larger spec.
4832 This is like processing a whole spec except that we do
4833 not initialize at the beginning and we do not supply a
4834 newline by default at the end.
4835 INSWITCH nonzero means don't process %-sequences in SPEC;
4836 in this case, % is treated as an ordinary character.
4837 This is used while substituting switches.
4838 INSWITCH nonzero also causes SPC not to terminate an argument.
4840 Value is zero unless a line was finished
4841 and the command on that line reported an error. */
4844 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4846 const char *p = spec;
4851 /* If it's an empty string argument to a switch, keep it as is. */
4852 if (inswitch && !*p)
4856 /* If substituting a switch, treat all chars like letters.
4857 Otherwise, NL, SPC, TAB and % are special. */
4858 switch (inswitch ? 'a' : c)
4863 if (argbuf.length () > 0
4864 && !strcmp (argbuf.last (), "|"))
4866 /* A `|' before the newline means use a pipe here,
4867 but only if -pipe was specified.
4868 Otherwise, execute now and don't pass the `|' as an arg. */
4871 input_from_pipe = 1;
4878 set_collect_gcc_options ();
4880 if (argbuf.length () > 0)
4886 /* Reinitialize for a new command, and for a new argument. */
4889 delete_this_arg = 0;
4890 this_is_output_file = 0;
4891 this_is_library_file = 0;
4892 this_is_linker_script = 0;
4893 input_from_pipe = 0;
4900 obstack_1grow (&obstack, c);
4908 /* Reinitialize for a new argument. */
4909 delete_this_arg = 0;
4910 this_is_output_file = 0;
4911 this_is_library_file = 0;
4912 this_is_linker_script = 0;
4919 fatal_error (input_location, "spec %qs invalid", spec);
4922 if (save_temps_length)
4923 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4925 obstack_grow (&obstack, input_basename, basename_length);
4926 if (compare_debug < 0)
4927 obstack_grow (&obstack, ".gk", 3);
4932 if (save_temps_length)
4933 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4935 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4936 if (compare_debug < 0)
4937 obstack_grow (&obstack, ".gk", 3);
4942 delete_this_arg = 2;
4945 /* Dump out the directories specified with LIBRARY_PATH,
4946 followed by the absolute directories
4947 that we search for startfiles. */
4950 struct spec_path_info info;
4953 info.append_len = 0;
4954 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4955 /* Used on systems which record the specified -L dirs
4956 and use them to search for dynamic linking.
4957 Relative directories always come from -B,
4958 and it is better not to use them for searching
4959 at run time. In particular, stage1 loses. */
4960 info.omit_relative = true;
4962 info.omit_relative = false;
4964 info.separate_options = false;
4966 for_each_path (&startfile_prefixes, true, 0, spec_path, &info);
4971 /* %efoo means report an error with `foo' as error message
4972 and don't execute any more commands for this file. */
4976 while (*p != 0 && *p != '\n')
4978 buf = (char *) alloca (p - q + 1);
4979 strncpy (buf, q, p - q);
4981 error ("%s", _(buf));
4986 /* %nfoo means report a notice with `foo' on stderr. */
4990 while (*p != 0 && *p != '\n')
4992 buf = (char *) alloca (p - q + 1);
4993 strncpy (buf, q, p - q);
4995 inform (0, "%s", _(buf));
5005 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
5006 defined, and it is not a directory, and it is
5007 writable, use it. Otherwise, treat this like any
5008 other temporary file. */
5010 if ((!save_temps_flag)
5011 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
5012 && (access (HOST_BIT_BUCKET, W_OK) == 0))
5014 obstack_grow (&obstack, HOST_BIT_BUCKET,
5015 strlen (HOST_BIT_BUCKET));
5016 delete_this_arg = 0;
5021 goto create_temp_file;
5025 obstack_1grow (&obstack, '-');
5026 delete_this_arg = 0;
5029 /* consume suffix */
5030 while (*p == '.' || ISALNUM ((unsigned char) *p))
5032 if (p[0] == '%' && p[1] == 'O')
5037 goto create_temp_file;
5041 /* consume suffix */
5042 while (*p == '.' || ISALNUM ((unsigned char) *p))
5044 if (p[0] == '%' && p[1] == 'O')
5049 goto create_temp_file;
5055 struct temp_name *t;
5057 const char *suffix = p;
5058 char *saved_suffix = NULL;
5060 while (*p == '.' || ISALNUM ((unsigned char) *p))
5062 suffix_length = p - suffix;
5063 if (p[0] == '%' && p[1] == 'O')
5066 /* We don't support extra suffix characters after %O. */
5067 if (*p == '.' || ISALNUM ((unsigned char) *p))
5068 fatal_error (input_location,
5069 "spec %qs has invalid %<%%0%c%>", spec, *p);
5070 if (suffix_length == 0)
5071 suffix = TARGET_OBJECT_SUFFIX;
5075 = XNEWVEC (char, suffix_length
5076 + strlen (TARGET_OBJECT_SUFFIX) + 1);
5077 strncpy (saved_suffix, suffix, suffix_length);
5078 strcpy (saved_suffix + suffix_length,
5079 TARGET_OBJECT_SUFFIX);
5081 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
5084 if (compare_debug < 0)
5086 suffix = concat (".gk", suffix, NULL);
5090 /* If -save-temps=obj and -o were specified, use that for the
5092 if (save_temps_length)
5095 temp_filename_length
5096 = save_temps_length + suffix_length + 1;
5097 tmp = (char *) alloca (temp_filename_length);
5098 memcpy (tmp, save_temps_prefix, save_temps_length);
5099 memcpy (tmp + save_temps_length, suffix, suffix_length);
5100 tmp[save_temps_length + suffix_length] = '\0';
5101 temp_filename = save_string (tmp, save_temps_length
5103 obstack_grow (&obstack, temp_filename,
5104 temp_filename_length);
5106 delete_this_arg = 0;
5110 /* If the gcc_input_filename has the same suffix specified
5111 for the %g, %u, or %U, and -save-temps is specified,
5112 we could end up using that file as an intermediate
5113 thus clobbering the user's source file (.e.g.,
5114 gcc -save-temps foo.s would clobber foo.s with the
5115 output of cpp0). So check for this condition and
5116 generate a temp file as the intermediate. */
5118 if (save_temps_flag)
5121 temp_filename_length = basename_length + suffix_length + 1;
5122 tmp = (char *) alloca (temp_filename_length);
5123 memcpy (tmp, input_basename, basename_length);
5124 memcpy (tmp + basename_length, suffix, suffix_length);
5125 tmp[basename_length + suffix_length] = '\0';
5126 temp_filename = tmp;
5128 if (filename_cmp (temp_filename, gcc_input_filename) != 0)
5130 #ifndef HOST_LACKS_INODE_NUMBERS
5131 struct stat st_temp;
5133 /* Note, set_input() resets input_stat_set to 0. */
5134 if (input_stat_set == 0)
5136 input_stat_set = stat (gcc_input_filename,
5138 if (input_stat_set >= 0)
5142 /* If we have the stat for the gcc_input_filename
5143 and we can do the stat for the temp_filename
5144 then the they could still refer to the same
5145 file if st_dev/st_ino's are the same. */
5146 if (input_stat_set != 1
5147 || stat (temp_filename, &st_temp) < 0
5148 || input_stat.st_dev != st_temp.st_dev
5149 || input_stat.st_ino != st_temp.st_ino)
5151 /* Just compare canonical pathnames. */
5152 char* input_realname = lrealpath (gcc_input_filename);
5153 char* temp_realname = lrealpath (temp_filename);
5154 bool files_differ = filename_cmp (input_realname, temp_realname);
5155 free (input_realname);
5156 free (temp_realname);
5160 temp_filename = save_string (temp_filename,
5161 temp_filename_length + 1);
5162 obstack_grow (&obstack, temp_filename,
5163 temp_filename_length);
5165 delete_this_arg = 0;
5171 /* See if we already have an association of %g/%u/%U and
5173 for (t = temp_names; t; t = t->next)
5174 if (t->length == suffix_length
5175 && strncmp (t->suffix, suffix, suffix_length) == 0
5176 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
5179 /* Make a new association if needed. %u and %j
5181 if (t == 0 || c == 'u' || c == 'j')
5185 t = XNEW (struct temp_name);
5186 t->next = temp_names;
5189 t->length = suffix_length;
5192 t->suffix = saved_suffix;
5193 saved_suffix = NULL;
5196 t->suffix = save_string (suffix, suffix_length);
5197 t->unique = (c == 'u' || c == 'U' || c == 'j');
5198 temp_filename = make_temp_file (t->suffix);
5199 temp_filename_length = strlen (temp_filename);
5200 t->filename = temp_filename;
5201 t->filename_length = temp_filename_length;
5204 free (saved_suffix);
5206 obstack_grow (&obstack, t->filename, t->filename_length);
5207 delete_this_arg = 1;
5215 if (at_file_supplied)
5217 /* We are going to expand `%i' to `@FILE', where FILE
5218 is a newly-created temporary filename. The filenames
5219 that would usually be expanded in place of %o will be
5220 written to the temporary file. */
5225 for (i = 0; i < n_infiles; i++)
5226 if (compile_input_file_p (&infiles[i]))
5229 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
5231 /* Copy the strings over. */
5232 for (i = 0, j = 0; i < n_infiles; i++)
5233 if (compile_input_file_p (&infiles[i]))
5235 argv[j] = CONST_CAST (char *, infiles[i].name);
5236 infiles[i].compiled = true;
5241 create_at_file (argv);
5244 for (i = 0; (int) i < n_infiles; i++)
5245 if (compile_input_file_p (&infiles[i]))
5247 store_arg (infiles[i].name, 0, 0);
5248 infiles[i].compiled = true;
5253 obstack_grow (&obstack, gcc_input_filename,
5254 input_filename_length);
5261 struct spec_path_info info;
5265 do_spec_1 ("-imultilib", 1, NULL);
5266 /* Make this a separate argument. */
5267 do_spec_1 (" ", 0, NULL);
5268 do_spec_1 (multilib_dir, 1, NULL);
5269 do_spec_1 (" ", 0, NULL);
5274 do_spec_1 ("-imultiarch", 1, NULL);
5275 /* Make this a separate argument. */
5276 do_spec_1 (" ", 0, NULL);
5277 do_spec_1 (multiarch_dir, 1, NULL);
5278 do_spec_1 (" ", 0, NULL);
5281 if (gcc_exec_prefix)
5283 do_spec_1 ("-iprefix", 1, NULL);
5284 /* Make this a separate argument. */
5285 do_spec_1 (" ", 0, NULL);
5286 do_spec_1 (gcc_exec_prefix, 1, NULL);
5287 do_spec_1 (" ", 0, NULL);
5290 if (target_system_root_changed ||
5291 (target_system_root && target_sysroot_hdrs_suffix))
5293 do_spec_1 ("-isysroot", 1, NULL);
5294 /* Make this a separate argument. */
5295 do_spec_1 (" ", 0, NULL);
5296 do_spec_1 (target_system_root, 1, NULL);
5297 if (target_sysroot_hdrs_suffix)
5298 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
5299 do_spec_1 (" ", 0, NULL);
5302 info.option = "-isystem";
5303 info.append = "include";
5304 info.append_len = strlen (info.append);
5305 info.omit_relative = false;
5306 info.separate_options = true;
5308 for_each_path (&include_prefixes, false, info.append_len,
5311 info.append = "include-fixed";
5312 if (*sysroot_hdrs_suffix_spec)
5313 info.append = concat (info.append, dir_separator_str,
5314 multilib_dir, NULL);
5315 info.append_len = strlen (info.append);
5316 for_each_path (&include_prefixes, false, info.append_len,
5323 int max = n_infiles;
5324 max += lang_specific_extra_outfiles;
5326 if (HAVE_GNU_LD && at_file_supplied)
5328 /* We are going to expand `%o' to `@FILE', where FILE
5329 is a newly-created temporary filename. The filenames
5330 that would usually be expanded in place of %o will be
5331 written to the temporary file. */
5336 /* Convert OUTFILES into a form suitable for writeargv. */
5338 /* Determine how many are non-NULL. */
5339 for (n_files = 0, i = 0; i < max; i++)
5340 n_files += outfiles[i] != NULL;
5342 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
5344 /* Copy the strings over. */
5345 for (i = 0, j = 0; i < max; i++)
5348 argv[j] = CONST_CAST (char *, outfiles[i]);
5353 create_at_file (argv);
5356 for (i = 0; i < max; i++)
5358 store_arg (outfiles[i], 0, 0);
5363 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
5368 this_is_library_file = 1;
5372 this_is_linker_script = 1;
5376 outfiles[input_file_number] = NULL;
5380 this_is_output_file = 1;
5385 unsigned int cur_index = argbuf.length ();
5386 /* Handle the {...} following the %W. */
5388 fatal_error (input_location,
5389 "spec %qs has invalid %<%%W%c%>", spec, *p);
5390 p = handle_braces (p + 1);
5394 /* If any args were output, mark the last one for deletion
5396 if (argbuf.length () != cur_index)
5397 record_temp_file (argbuf.last (), 0, 1);
5401 /* %x{OPTION} records OPTION for %X to output. */
5409 /* Skip past the option value and make a copy. */
5411 fatal_error (input_location,
5412 "spec %qs has invalid %<%%x%c%>", spec, *p);
5415 string = save_string (p1 + 1, p - p1 - 2);
5417 /* See if we already recorded this option. */
5418 FOR_EACH_VEC_ELT (linker_options, ix, opt)
5419 if (! strcmp (string, opt))
5425 /* This option is new; add it. */
5426 add_linker_option (string, strlen (string));
5431 /* Dump out the options accumulated previously using %x. */
5433 do_specs_vec (linker_options);
5436 /* Dump out the options accumulated previously using -Wa,. */
5438 do_specs_vec (assembler_options);
5441 /* Dump out the options accumulated previously using -Wp,. */
5443 do_specs_vec (preprocessor_options);
5446 /* Here are digits and numbers that just process
5447 a certain constant string as a spec. */
5450 value = do_spec_1 (cc1_spec, 0, NULL);
5456 value = do_spec_1 (cc1plus_spec, 0, NULL);
5462 value = do_spec_1 (asm_spec, 0, NULL);
5468 value = do_spec_1 (asm_final_spec, 0, NULL);
5475 const char *const spec
5476 = (input_file_compiler->cpp_spec
5477 ? input_file_compiler->cpp_spec
5479 value = do_spec_1 (spec, 0, NULL);
5486 value = do_spec_1 (endfile_spec, 0, NULL);
5492 value = do_spec_1 (link_spec, 0, NULL);
5498 value = do_spec_1 (lib_spec, 0, NULL);
5504 if (multilib_os_dir == NULL)
5505 obstack_1grow (&obstack, '.');
5507 obstack_grow (&obstack, multilib_os_dir,
5508 strlen (multilib_os_dir));
5512 value = do_spec_1 (libgcc_spec, 0, NULL);
5518 /* We assume there is a directory
5519 separator at the end of this string. */
5520 if (target_system_root)
5522 obstack_grow (&obstack, target_system_root,
5523 strlen (target_system_root));
5524 if (target_sysroot_suffix)
5525 obstack_grow (&obstack, target_sysroot_suffix,
5526 strlen (target_sysroot_suffix));
5531 value = do_spec_1 (startfile_spec, 0, NULL);
5536 /* Here we define characters other than letters and digits. */
5539 p = handle_braces (p);
5545 p = handle_spec_function (p, NULL);
5551 obstack_1grow (&obstack, '%');
5558 while (p[len] && p[len] != ' ' && p[len] != '%')
5560 suffix_subst = save_string (p - 1, len + 1);
5565 /* Henceforth ignore the option(s) matching the pattern
5571 int have_wildcard = 0;
5576 switch_option = SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC;
5578 switch_option = SWITCH_IGNORE;
5580 while (p[len] && p[len] != ' ' && p[len] != '\t')
5583 if (p[len-1] == '*')
5586 for (i = 0; i < n_switches; i++)
5587 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5588 && (have_wildcard || switches[i].part1[len] == '\0'))
5590 switches[i].live_cond |= switch_option;
5591 /* User switch be validated from validate_all_switches.
5592 when the definition is seen from the spec file.
5593 If not defined anywhere, will be rejected. */
5594 if (switches[i].known)
5595 switches[i].validated = true;
5603 if (soft_matched_part)
5605 if (soft_matched_part[0])
5606 do_spec_1 (soft_matched_part, 1, NULL);
5607 /* Only insert a space after the substitution if it is at the
5608 end of the current sequence. So if:
5610 "%{foo=*:bar%*}%{foo=*:one%*two}"
5612 matches -foo=hello then it will produce:
5614 barhello onehellotwo
5616 if (*p == 0 || *p == '}')
5617 do_spec_1 (" ", 0, NULL);
5620 /* Catch the case where a spec string contains something like
5621 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5622 hand side of the :. */
5623 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5626 /* Process a string found as the value of a spec given by name.
5627 This feature allows individual machine descriptions
5628 to add and use their own specs. */
5631 const char *name = p;
5632 struct spec_list *sl;
5635 /* The string after the S/P is the name of a spec that is to be
5637 while (*p && *p != ')')
5640 /* See if it's in the list. */
5641 for (len = p - name, sl = specs; sl; sl = sl->next)
5642 if (sl->name_len == len && !strncmp (sl->name, name, len))
5644 name = *(sl->ptr_spec);
5646 fnotice (stderr, "Processing spec (%s), which is '%s'\n",
5654 value = do_spec_1 (name, 0, NULL);
5659 /* Discard the closing paren. */
5666 error ("spec failure: unrecognized spec option %qc", c);
5672 /* Backslash: treat next character as ordinary. */
5677 /* Ordinary character: put it into the current argument. */
5678 obstack_1grow (&obstack, c);
5682 /* End of string. If we are processing a spec function, we need to
5683 end any pending argument. */
5684 if (processing_spec_function)
5690 /* Look up a spec function. */
5692 static const struct spec_function *
5693 lookup_spec_function (const char *name)
5695 const struct spec_function *sf;
5697 for (sf = static_spec_functions; sf->name != NULL; sf++)
5698 if (strcmp (sf->name, name) == 0)
5704 /* Evaluate a spec function. */
5707 eval_spec_function (const char *func, const char *args)
5709 const struct spec_function *sf;
5710 const char *funcval;
5712 /* Saved spec processing context. */
5713 vec<const_char_p> save_argbuf;
5716 int save_delete_this_arg;
5717 int save_this_is_output_file;
5718 int save_this_is_library_file;
5719 int save_input_from_pipe;
5720 int save_this_is_linker_script;
5721 const char *save_suffix_subst;
5723 int save_growing_size;
5724 void *save_growing_value = NULL;
5726 sf = lookup_spec_function (func);
5728 fatal_error (input_location, "unknown spec function %qs", func);
5730 /* Push the spec processing context. */
5731 save_argbuf = argbuf;
5733 save_arg_going = arg_going;
5734 save_delete_this_arg = delete_this_arg;
5735 save_this_is_output_file = this_is_output_file;
5736 save_this_is_library_file = this_is_library_file;
5737 save_this_is_linker_script = this_is_linker_script;
5738 save_input_from_pipe = input_from_pipe;
5739 save_suffix_subst = suffix_subst;
5741 /* If we have some object growing now, finalize it so the args and function
5742 eval proceed from a cleared context. This is needed to prevent the first
5743 constructed arg from mistakenly including the growing value. We'll push
5744 this value back on the obstack once the function evaluation is done, to
5745 restore a consistent processing context for our caller. This is fine as
5746 the address of growing objects isn't guaranteed to remain stable until
5747 they are finalized, and we expect this situation to be rare enough for
5748 the extra copy not to be an issue. */
5749 save_growing_size = obstack_object_size (&obstack);
5750 if (save_growing_size > 0)
5751 save_growing_value = obstack_finish (&obstack);
5753 /* Create a new spec processing context, and build the function
5757 if (do_spec_2 (args) < 0)
5758 fatal_error (input_location, "error in args to spec function %qs", func);
5760 /* argbuf_index is an index for the next argument to be inserted, and
5761 so contains the count of the args already inserted. */
5763 funcval = (*sf->func) (argbuf.length (),
5766 /* Pop the spec processing context. */
5768 argbuf = save_argbuf;
5770 arg_going = save_arg_going;
5771 delete_this_arg = save_delete_this_arg;
5772 this_is_output_file = save_this_is_output_file;
5773 this_is_library_file = save_this_is_library_file;
5774 this_is_linker_script = save_this_is_linker_script;
5775 input_from_pipe = save_input_from_pipe;
5776 suffix_subst = save_suffix_subst;
5778 if (save_growing_size > 0)
5779 obstack_grow (&obstack, save_growing_value, save_growing_size);
5784 /* Handle a spec function call of the form:
5788 ARGS is processed as a spec in a separate context and split into an
5789 argument vector in the normal fashion. The function returns a string
5790 containing a spec which we then process in the caller's context, or
5791 NULL if no processing is required.
5793 If RETVAL_NONNULL is not NULL, then store a bool whether function
5794 returned non-NULL. */
5797 handle_spec_function (const char *p, bool *retval_nonnull)
5800 const char *endp, *funcval;
5803 processing_spec_function++;
5805 /* Get the function name. */
5806 for (endp = p; *endp != '\0'; endp++)
5808 if (*endp == '(') /* ) */
5810 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5811 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5812 fatal_error (input_location, "malformed spec function name");
5814 if (*endp != '(') /* ) */
5815 fatal_error (input_location, "no arguments for spec function");
5816 func = save_string (p, endp - p);
5819 /* Get the arguments. */
5820 for (count = 0; *endp != '\0'; endp++)
5829 else if (*endp == '(') /* ) */
5834 fatal_error (input_location, "malformed spec function arguments");
5835 args = save_string (p, endp - p);
5838 /* p now points to just past the end of the spec function expression. */
5840 funcval = eval_spec_function (func, args);
5841 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5844 *retval_nonnull = funcval != NULL;
5849 processing_spec_function--;
5854 /* Inline subroutine of handle_braces. Returns true if the current
5855 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5857 input_suffix_matches (const char *atom, const char *end_atom)
5859 return (input_suffix
5860 && !strncmp (input_suffix, atom, end_atom - atom)
5861 && input_suffix[end_atom - atom] == '\0');
5864 /* Subroutine of handle_braces. Returns true if the current
5865 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5867 input_spec_matches (const char *atom, const char *end_atom)
5869 return (input_file_compiler
5870 && input_file_compiler->suffix
5871 && input_file_compiler->suffix[0] != '\0'
5872 && !strncmp (input_file_compiler->suffix + 1, atom,
5874 && input_file_compiler->suffix[end_atom - atom + 1] == '\0');
5877 /* Subroutine of handle_braces. Returns true if a switch
5878 matching the atom bracketed by ATOM and END_ATOM appeared on the
5881 switch_matches (const char *atom, const char *end_atom, int starred)
5884 int len = end_atom - atom;
5885 int plen = starred ? len : -1;
5887 for (i = 0; i < n_switches; i++)
5888 if (!strncmp (switches[i].part1, atom, len)
5889 && (starred || switches[i].part1[len] == '\0')
5890 && check_live_switch (i, plen))
5893 /* Check if a switch with separated form matching the atom.
5894 We check -D and -U switches. */
5895 else if (switches[i].args != 0)
5897 if ((*switches[i].part1 == 'D' || *switches[i].part1 == 'U')
5898 && *switches[i].part1 == atom[0])
5900 if (!strncmp (switches[i].args[0], &atom[1], len - 1)
5901 && (starred || (switches[i].part1[1] == '\0'
5902 && switches[i].args[0][len - 1] == '\0'))
5903 && check_live_switch (i, (starred ? 1 : -1)))
5911 /* Inline subroutine of handle_braces. Mark all of the switches which
5912 match ATOM (extends to END_ATOM; STARRED indicates whether there
5913 was a star after the atom) for later processing. */
5915 mark_matching_switches (const char *atom, const char *end_atom, int starred)
5918 int len = end_atom - atom;
5919 int plen = starred ? len : -1;
5921 for (i = 0; i < n_switches; i++)
5922 if (!strncmp (switches[i].part1, atom, len)
5923 && (starred || switches[i].part1[len] == '\0')
5924 && check_live_switch (i, plen))
5925 switches[i].ordering = 1;
5928 /* Inline subroutine of handle_braces. Process all the currently
5929 marked switches through give_switch, and clear the marks. */
5931 process_marked_switches (void)
5935 for (i = 0; i < n_switches; i++)
5936 if (switches[i].ordering == 1)
5938 switches[i].ordering = 0;
5943 /* Handle a %{ ... } construct. P points just inside the leading {.
5944 Returns a pointer one past the end of the brace block, or 0
5945 if we call do_spec_1 and that returns -1. */
5948 handle_braces (const char *p)
5950 const char *atom, *end_atom;
5951 const char *d_atom = NULL, *d_end_atom = NULL;
5952 const char *orig = p;
5960 bool a_must_be_last = false;
5961 bool ordered_set = false;
5962 bool disjunct_set = false;
5963 bool disj_matched = false;
5964 bool disj_starred = true;
5965 bool n_way_choice = false;
5966 bool n_way_matched = false;
5968 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5975 /* Scan one "atom" (S in the description above of %{}, possibly
5976 with '!', '.', '@', ',', or '*' modifiers). */
5978 a_is_suffix = false;
5979 a_is_starred = false;
5980 a_is_negated = false;
5981 a_is_spectype = false;
5985 p++, a_is_negated = true;
5988 if (*p == '%' && p[1] == ':')
5992 p = handle_spec_function (p + 2, &a_matched);
5997 p++, a_is_suffix = true;
5999 p++, a_is_spectype = true;
6002 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
6003 || *p == ',' || *p == '.' || *p == '@')
6008 p++, a_is_starred = 1;
6015 /* Substitute the switch(es) indicated by the current atom. */
6017 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
6018 || a_is_spectype || atom == end_atom)
6021 mark_matching_switches (atom, end_atom, a_is_starred);
6024 process_marked_switches ();
6028 /* Substitute some text if the current atom appears as a switch
6030 disjunct_set = true;
6034 if (atom && atom == end_atom)
6036 if (!n_way_choice || disj_matched || *p == '|'
6037 || a_is_negated || a_is_suffix || a_is_spectype
6041 /* An empty term may appear as the last choice of an
6042 N-way choice set; it means "otherwise". */
6043 a_must_be_last = true;
6044 disj_matched = !n_way_matched;
6045 disj_starred = false;
6049 if ((a_is_suffix || a_is_spectype) && a_is_starred)
6053 disj_starred = false;
6055 /* Don't bother testing this atom if we already have a
6057 if (!disj_matched && !n_way_matched)
6060 /* a_matched is already set by handle_spec_function. */;
6061 else if (a_is_suffix)
6062 a_matched = input_suffix_matches (atom, end_atom);
6063 else if (a_is_spectype)
6064 a_matched = input_spec_matches (atom, end_atom);
6066 a_matched = switch_matches (atom, end_atom, a_is_starred);
6068 if (a_matched != a_is_negated)
6070 disj_matched = true;
6072 d_end_atom = end_atom;
6079 /* Found the body, that is, the text to substitute if the
6080 current disjunction matches. */
6081 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
6082 disj_matched && !n_way_matched);
6086 /* If we have an N-way choice, reset state for the next
6090 n_way_choice = true;
6091 n_way_matched |= disj_matched;
6092 disj_matched = false;
6093 disj_starred = true;
6094 d_atom = d_end_atom = NULL;
6103 while (*p++ != '}');
6108 fatal_error (input_location, "braced spec %qs is invalid at %qc", orig, *p);
6113 /* Subroutine of handle_braces. Scan and process a brace substitution body
6114 (X in the description of %{} syntax). P points one past the colon;
6115 ATOM and END_ATOM bracket the first atom which was found to be true
6116 (present) in the current disjunction; STARRED indicates whether all
6117 the atoms in the current disjunction were starred (for syntax validation);
6118 MATCHED indicates whether the disjunction matched or not, and therefore
6119 whether or not the body is to be processed through do_spec_1 or just
6120 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
6124 process_brace_body (const char *p, const char *atom, const char *end_atom,
6125 int starred, int matched)
6127 const char *body, *end_body;
6128 unsigned int nesting_level;
6129 bool have_subst = false;
6131 /* Locate the closing } or ;, honoring nested braces.
6132 Trim trailing whitespace. */
6141 if (!--nesting_level)
6144 else if (*p == ';' && nesting_level == 1)
6146 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
6148 else if (*p == '\0')
6154 while (end_body[-1] == ' ' || end_body[-1] == '\t')
6157 if (have_subst && !starred)
6162 /* Copy the substitution body to permanent storage and execute it.
6163 If have_subst is false, this is a simple matter of running the
6164 body through do_spec_1... */
6165 char *string = save_string (body, end_body - body);
6168 if (do_spec_1 (string, 0, NULL) < 0)
6173 /* ... but if have_subst is true, we have to process the
6174 body once for each matching switch, with %* set to the
6175 variant part of the switch. */
6176 unsigned int hard_match_len = end_atom - atom;
6179 for (i = 0; i < n_switches; i++)
6180 if (!strncmp (switches[i].part1, atom, hard_match_len)
6181 && check_live_switch (i, hard_match_len))
6183 if (do_spec_1 (string, 0,
6184 &switches[i].part1[hard_match_len]) < 0)
6186 /* Pass any arguments this switch has. */
6188 suffix_subst = NULL;
6196 fatal_error (input_location, "braced spec body %qs is invalid", body);
6199 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
6200 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
6201 spec, or -1 if either exact match or %* is used.
6203 A -O switch is obsoleted by a later -O switch. A -f, -g, -m, or -W switch
6204 whose value does not begin with "no-" is obsoleted by the same value
6205 with the "no-", similarly for a switch with the "no-" prefix. */
6208 check_live_switch (int switchnum, int prefix_length)
6210 const char *name = switches[switchnum].part1;
6213 /* If we already processed this switch and determined if it was
6214 live or not, return our past determination. */
6215 if (switches[switchnum].live_cond != 0)
6216 return ((switches[switchnum].live_cond & SWITCH_LIVE) != 0
6217 && (switches[switchnum].live_cond & SWITCH_FALSE) == 0
6218 && (switches[switchnum].live_cond & SWITCH_IGNORE_PERMANENTLY)
6221 /* In the common case of {<at-most-one-letter>*}, a negating
6222 switch would always match, so ignore that case. We will just
6223 send the conflicting switches to the compiler phase. */
6224 if (prefix_length >= 0 && prefix_length <= 1)
6227 /* Now search for duplicate in a manner that depends on the name. */
6231 for (i = switchnum + 1; i < n_switches; i++)
6232 if (switches[i].part1[0] == 'O')
6234 switches[switchnum].validated = true;
6235 switches[switchnum].live_cond = SWITCH_FALSE;
6240 case 'W': case 'f': case 'm': case 'g':
6241 if (! strncmp (name + 1, "no-", 3))
6243 /* We have Xno-YYY, search for XYYY. */
6244 for (i = switchnum + 1; i < n_switches; i++)
6245 if (switches[i].part1[0] == name[0]
6246 && ! strcmp (&switches[i].part1[1], &name[4]))
6248 /* --specs are validated with the validate_switches mechanism. */
6249 if (switches[switchnum].known)
6250 switches[switchnum].validated = true;
6251 switches[switchnum].live_cond = SWITCH_FALSE;
6257 /* We have XYYY, search for Xno-YYY. */
6258 for (i = switchnum + 1; i < n_switches; i++)
6259 if (switches[i].part1[0] == name[0]
6260 && switches[i].part1[1] == 'n'
6261 && switches[i].part1[2] == 'o'
6262 && switches[i].part1[3] == '-'
6263 && !strcmp (&switches[i].part1[4], &name[1]))
6265 /* --specs are validated with the validate_switches mechanism. */
6266 if (switches[switchnum].known)
6267 switches[switchnum].validated = true;
6268 switches[switchnum].live_cond = SWITCH_FALSE;
6275 /* Otherwise the switch is live. */
6276 switches[switchnum].live_cond |= SWITCH_LIVE;
6280 /* Pass a switch to the current accumulating command
6281 in the same form that we received it.
6282 SWITCHNUM identifies the switch; it is an index into
6283 the vector of switches gcc received, which is `switches'.
6284 This cannot fail since it never finishes a command line.
6286 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
6289 give_switch (int switchnum, int omit_first_word)
6291 if ((switches[switchnum].live_cond & SWITCH_IGNORE) != 0)
6294 if (!omit_first_word)
6296 do_spec_1 ("-", 0, NULL);
6297 do_spec_1 (switches[switchnum].part1, 1, NULL);
6300 if (switches[switchnum].args != 0)
6303 for (p = switches[switchnum].args; *p; p++)
6305 const char *arg = *p;
6307 do_spec_1 (" ", 0, NULL);
6310 unsigned length = strlen (arg);
6313 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
6314 if (arg[length] == '.')
6316 (CONST_CAST (char *, arg))[length] = 0;
6320 do_spec_1 (arg, 1, NULL);
6322 (CONST_CAST (char *, arg))[length] = '.';
6323 do_spec_1 (suffix_subst, 1, NULL);
6326 do_spec_1 (arg, 1, NULL);
6330 do_spec_1 (" ", 0, NULL);
6331 switches[switchnum].validated = true;
6334 /* Print GCC configuration (e.g. version, thread model, target,
6335 configuration_arguments) to a given FILE. */
6338 print_configuration (FILE *file)
6343 fnotice (file, "Target: %s\n", spec_machine);
6344 fnotice (file, "Configured with: %s\n", configuration_arguments);
6346 #ifdef THREAD_MODEL_SPEC
6347 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6348 but there's no point in doing all this processing just to get
6349 thread_model back. */
6350 obstack_init (&obstack);
6351 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6352 obstack_1grow (&obstack, '\0');
6353 thrmod = XOBFINISH (&obstack, const char *);
6355 thrmod = thread_model;
6358 fnotice (file, "Thread model: %s\n", thrmod);
6360 /* compiler_version is truncated at the first space when initialized
6361 from version string, so truncate version_string at the first space
6362 before comparing. */
6363 for (n = 0; version_string[n]; n++)
6364 if (version_string[n] == ' ')
6367 if (! strncmp (version_string, compiler_version, n)
6368 && compiler_version[n] == 0)
6369 fnotice (file, "gcc version %s %s\n", version_string,
6372 fnotice (file, "gcc driver version %s %sexecuting gcc version %s\n",
6373 version_string, pkgversion_string, compiler_version);
6377 #define RETRY_ICE_ATTEMPTS 3
6379 /* Returns true if FILE1 and FILE2 contain equivalent data, 0 otherwise. */
6382 files_equal_p (char *file1, char *file2)
6384 struct stat st1, st2;
6387 const int bufsize = 8192;
6388 char *buf = XNEWVEC (char, bufsize);
6390 fd1 = open (file1, O_RDONLY);
6391 fd2 = open (file2, O_RDONLY);
6393 if (fd1 < 0 || fd2 < 0)
6396 if (fstat (fd1, &st1) < 0 || fstat (fd2, &st2) < 0)
6399 if (st1.st_size != st2.st_size)
6402 for (n = st1.st_size; n; n -= len)
6405 if ((int) len > bufsize / 2)
6408 if (read (fd1, buf, len) != (int) len
6409 || read (fd2, buf + bufsize / 2, len) != (int) len)
6414 if (memcmp (buf, buf + bufsize / 2, len) != 0)
6431 /* Check that compiler's output doesn't differ across runs.
6432 TEMP_STDOUT_FILES and TEMP_STDERR_FILES are arrays of files, containing
6433 stdout and stderr for each compiler run. Return true if all of
6434 TEMP_STDOUT_FILES and TEMP_STDERR_FILES are equivalent. */
6437 check_repro (char **temp_stdout_files, char **temp_stderr_files)
6440 for (i = 0; i < RETRY_ICE_ATTEMPTS - 2; ++i)
6442 if (!files_equal_p (temp_stdout_files[i], temp_stdout_files[i + 1])
6443 || !files_equal_p (temp_stderr_files[i], temp_stderr_files[i + 1]))
6445 fnotice (stderr, "The bug is not reproducible, so it is"
6446 " likely a hardware or OS problem.\n");
6450 return i == RETRY_ICE_ATTEMPTS - 2;
6453 enum attempt_status {
6454 ATTEMPT_STATUS_FAIL_TO_RUN,
6455 ATTEMPT_STATUS_SUCCESS,
6460 /* Run compiler with arguments NEW_ARGV to reproduce the ICE, storing stdout
6461 to OUT_TEMP and stderr to ERR_TEMP. If APPEND is TRUE, append to OUT_TEMP
6462 and ERR_TEMP instead of truncating. If EMIT_SYSTEM_INFO is TRUE, also write
6463 GCC configuration into to ERR_TEMP. Return ATTEMPT_STATUS_FAIL_TO_RUN if
6464 compiler failed to run, ATTEMPT_STATUS_ICE if compiled ICE-ed and
6465 ATTEMPT_STATUS_SUCCESS otherwise. */
6467 static enum attempt_status
6468 run_attempt (const char **new_argv, const char *out_temp,
6469 const char *err_temp, int emit_system_info, int append)
6472 if (emit_system_info)
6474 FILE *file_out = fopen (err_temp, "a");
6475 print_configuration (file_out);
6476 fputs ("\n", file_out);
6482 struct pex_obj *pex;
6484 int pex_flags = PEX_USE_PIPES | PEX_LAST;
6485 enum attempt_status status = ATTEMPT_STATUS_FAIL_TO_RUN;
6488 pex_flags |= PEX_STDOUT_APPEND | PEX_STDERR_APPEND;
6490 pex = pex_init (PEX_USE_PIPES, new_argv[0], NULL);
6492 fatal_error (input_location, "pex_init failed: %m");
6494 errmsg = pex_run (pex, pex_flags, new_argv[0],
6495 CONST_CAST2 (char *const *, const char **, &new_argv[1]), out_temp,
6500 fatal_error (input_location, errmsg);
6504 pfatal_with_name (errmsg);
6508 if (!pex_get_status (pex, 1, &exit_status))
6511 switch (WEXITSTATUS (exit_status))
6514 status = ATTEMPT_STATUS_ICE;
6517 case SUCCESS_EXIT_CODE:
6518 status = ATTEMPT_STATUS_SUCCESS;
6530 /* This routine reads lines from IN file, adds C++ style comments
6531 at the begining of each line and writes result into OUT. */
6534 insert_comments (const char *file_in, const char *file_out)
6536 FILE *in = fopen (file_in, "rb");
6537 FILE *out = fopen (file_out, "wb");
6540 bool add_comment = true;
6541 while (fgets (line, sizeof (line), in))
6546 add_comment = strchr (line, '\n') != NULL;
6553 /* This routine adds preprocessed source code into the given ERR_FILE.
6554 To do this, it adds "-E" to NEW_ARGV and execute RUN_ATTEMPT routine to
6555 add information in report file. RUN_ATTEMPT should return
6556 ATTEMPT_STATUS_SUCCESS, in other case we cannot generate the report. */
6559 do_report_bug (const char **new_argv, const int nargs,
6560 char **out_file, char **err_file)
6563 int fd = open (*out_file, O_RDWR | O_APPEND);
6566 write (fd, "\n//", 3);
6567 for (i = 0; i < nargs; i++)
6570 write (fd, new_argv[i], strlen (new_argv[i]));
6572 write (fd, "\n\n", 2);
6574 new_argv[nargs] = "-E";
6575 new_argv[nargs + 1] = NULL;
6577 status = run_attempt (new_argv, *out_file, *err_file, 0, 1);
6579 if (status == ATTEMPT_STATUS_SUCCESS)
6581 fnotice (stderr, "Preprocessed source stored into %s file,"
6582 " please attach this to your bugreport.\n", *out_file);
6583 /* Make sure it is not deleted. */
6589 /* Try to reproduce ICE. If bug is reproducible, generate report .err file
6590 containing GCC configuration, backtrace, compiler's command line options
6591 and preprocessed source code. */
6594 try_generate_repro (const char **argv)
6596 int i, nargs, out_arg = -1, quiet = 0, attempt;
6597 const char **new_argv;
6598 char *temp_files[RETRY_ICE_ATTEMPTS * 2];
6599 char **temp_stdout_files = &temp_files[0];
6600 char **temp_stderr_files = &temp_files[RETRY_ICE_ATTEMPTS];
6602 if (gcc_input_filename == NULL || ! strcmp (gcc_input_filename, "-"))
6605 for (nargs = 0; argv[nargs] != NULL; ++nargs)
6606 /* Only retry compiler ICEs, not preprocessor ones. */
6607 if (! strcmp (argv[nargs], "-E"))
6609 else if (argv[nargs][0] == '-' && argv[nargs][1] == 'o')
6616 /* If the compiler is going to output any time information,
6617 it might varry between invocations. */
6618 else if (! strcmp (argv[nargs], "-quiet"))
6620 else if (! strcmp (argv[nargs], "-ftime-report"))
6623 if (out_arg == -1 || !quiet)
6626 memset (temp_files, '\0', sizeof (temp_files));
6627 new_argv = XALLOCAVEC (const char *, nargs + 4);
6628 memcpy (new_argv, argv, (nargs + 1) * sizeof (const char *));
6629 new_argv[nargs++] = "-frandom-seed=0";
6630 new_argv[nargs++] = "-fdump-noaddr";
6631 new_argv[nargs] = NULL;
6632 if (new_argv[out_arg][2] == '\0')
6633 new_argv[out_arg + 1] = "-";
6635 new_argv[out_arg] = "-o-";
6638 for (attempt = 0; attempt < RETRY_ICE_ATTEMPTS; ++attempt)
6640 int emit_system_info = 0;
6642 temp_stdout_files[attempt] = make_temp_file (".out");
6643 temp_stderr_files[attempt] = make_temp_file (".err");
6645 if (attempt == RETRY_ICE_ATTEMPTS - 1)
6648 emit_system_info = 1;
6651 status = run_attempt (new_argv, temp_stdout_files[attempt],
6652 temp_stderr_files[attempt], emit_system_info,
6655 if (status != ATTEMPT_STATUS_ICE)
6657 fnotice (stderr, "The bug is not reproducible, so it is"
6658 " likely a hardware or OS problem.\n");
6663 if (!check_repro (temp_stdout_files, temp_stderr_files))
6667 /* Insert commented out backtrace into report file. */
6668 char **stderr_commented = &temp_stdout_files[RETRY_ICE_ATTEMPTS - 1];
6669 insert_comments (temp_stderr_files[RETRY_ICE_ATTEMPTS - 1],
6672 /* In final attempt we append compiler options and preprocesssed code to last
6673 generated .out file with configuration and backtrace. */
6674 char **output = &temp_stdout_files[RETRY_ICE_ATTEMPTS - 1];
6675 do_report_bug (new_argv, nargs, stderr_commented, output);
6679 for (i = 0; i < RETRY_ICE_ATTEMPTS * 2; i++)
6682 unlink (temp_stdout_files[i]);
6683 free (temp_stdout_files[i]);
6687 /* Search for a file named NAME trying various prefixes including the
6688 user's -B prefix and some standard ones.
6689 Return the absolute file name found. If nothing is found, return NAME. */
6692 find_file (const char *name)
6694 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true);
6695 return newname ? newname : name;
6698 /* Determine whether a directory exists. If LINKER, return 0 for
6699 certain fixed names not needed by the linker. */
6702 is_directory (const char *path1, bool linker)
6709 /* Ensure the string ends with "/.". The resulting path will be a
6710 directory even if the given path is a symbolic link. */
6711 len1 = strlen (path1);
6712 path = (char *) alloca (3 + len1);
6713 memcpy (path, path1, len1);
6715 if (!IS_DIR_SEPARATOR (cp[-1]))
6716 *cp++ = DIR_SEPARATOR;
6720 /* Exclude directories that the linker is known to search. */
6722 && IS_DIR_SEPARATOR (path[0])
6724 && filename_ncmp (path + 1, "lib", 3) == 0)
6726 && filename_ncmp (path + 1, "usr", 3) == 0
6727 && IS_DIR_SEPARATOR (path[4])
6728 && filename_ncmp (path + 5, "lib", 3) == 0)))
6731 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
6734 /* Set up the various global variables to indicate that we're processing
6735 the input file named FILENAME. */
6738 set_input (const char *filename)
6742 gcc_input_filename = filename;
6743 input_filename_length = strlen (gcc_input_filename);
6744 input_basename = lbasename (gcc_input_filename);
6746 /* Find a suffix starting with the last period,
6747 and set basename_length to exclude that suffix. */
6748 basename_length = strlen (input_basename);
6749 suffixed_basename_length = basename_length;
6750 p = input_basename + basename_length;
6751 while (p != input_basename && *p != '.')
6753 if (*p == '.' && p != input_basename)
6755 basename_length = p - input_basename;
6756 input_suffix = p + 1;
6761 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
6762 we will need to do a stat on the gcc_input_filename. The
6763 INPUT_STAT_SET signals that the stat is needed. */
6767 /* On fatal signals, delete all the temporary files. */
6770 fatal_signal (int signum)
6772 signal (signum, SIG_DFL);
6773 delete_failure_queue ();
6774 delete_temp_files ();
6775 /* Get the same signal again, this time not handled,
6776 so its normal effect occurs. */
6777 kill (getpid (), signum);
6780 /* Compare the contents of the two files named CMPFILE[0] and
6781 CMPFILE[1]. Return zero if they're identical, nonzero
6785 compare_files (char *cmpfile[])
6788 FILE *temp[2] = { NULL, NULL };
6794 void *map[2] = { NULL, NULL };
6796 for (i = 0; i < 2; i++)
6800 if (stat (cmpfile[i], &st) < 0 || !S_ISREG (st.st_mode))
6802 error ("%s: could not determine length of compare-debug file %s",
6803 gcc_input_filename, cmpfile[i]);
6808 length[i] = st.st_size;
6811 if (!ret && length[0] != length[1])
6813 error ("%s: -fcompare-debug failure (length)", gcc_input_filename);
6818 for (i = 0; i < 2; i++)
6820 int fd = open (cmpfile[i], O_RDONLY);
6823 error ("%s: could not open compare-debug file %s",
6824 gcc_input_filename, cmpfile[i]);
6829 map[i] = mmap (NULL, length[i], PROT_READ, MAP_PRIVATE, fd, 0);
6832 if (map[i] == (void *) MAP_FAILED)
6841 if (memcmp (map[0], map[1], length[0]) != 0)
6843 error ("%s: -fcompare-debug failure", gcc_input_filename);
6848 for (i = 0; i < 2; i++)
6850 munmap ((caddr_t) map[i], length[i]);
6859 for (i = 0; i < 2; i++)
6861 temp[i] = fopen (cmpfile[i], "r");
6864 error ("%s: could not open compare-debug file %s",
6865 gcc_input_filename, cmpfile[i]);
6871 if (!ret && temp[0] && temp[1])
6875 c0 = fgetc (temp[0]);
6876 c1 = fgetc (temp[1]);
6880 error ("%s: -fcompare-debug failure",
6881 gcc_input_filename);
6890 for (i = 1; i >= 0; i--)
6899 /* driver::main is implemented as a series of driver:: method calls. */
6902 driver::main (int argc, char **argv)
6906 set_progname (argv[0]);
6907 expand_at_files (&argc, &argv);
6908 decode_argv (argc, const_cast <const char **> (argv));
6909 global_initializations ();
6910 build_multilib_strings ();
6912 putenv_COLLECT_GCC (argv[0]);
6913 maybe_putenv_COLLECT_LTO_WRAPPER ();
6914 maybe_putenv_OFFLOAD_TARGETS ();
6915 handle_unrecognized_options ();
6917 if (!maybe_print_and_exit ())
6920 early_exit = prepare_infiles ();
6922 return get_exit_code ();
6924 do_spec_on_infiles ();
6925 maybe_run_linker (argv[0]);
6927 return get_exit_code ();
6930 /* Locate the final component of argv[0] after any leading path, and set
6931 the program name accordingly. */
6934 driver::set_progname (const char *argv0) const
6936 const char *p = argv0 + strlen (argv0);
6937 while (p != argv0 && !IS_DIR_SEPARATOR (p[-1]))
6941 xmalloc_set_program_name (progname);
6944 /* Expand any @ files within the command-line args,
6945 setting at_file_supplied if any were expanded. */
6948 driver::expand_at_files (int *argc, char ***argv) const
6950 char **old_argv = *argv;
6952 expandargv (argc, argv);
6954 /* Determine if any expansions were made. */
6955 if (*argv != old_argv)
6956 at_file_supplied = true;
6959 /* Decode the command-line arguments from argc/argv into the
6960 decoded_options array. */
6963 driver::decode_argv (int argc, const char **argv)
6965 /* Register the language-independent parameters. */
6966 global_init_params ();
6969 init_options_struct (&global_options, &global_options_set);
6971 decode_cmdline_options_to_array (argc, argv,
6973 &decoded_options, &decoded_options_count);
6976 /* Perform various initializations and setup. */
6979 driver::global_initializations ()
6981 /* Unlock the stdio streams. */
6982 unlock_std_streams ();
6984 gcc_init_libintl ();
6986 diagnostic_initialize (global_dc, 0);
6987 diagnostic_color_init (global_dc);
6989 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6990 /* Perform host dependent initialization when needed. */
6991 GCC_DRIVER_HOST_INITIALIZATION;
6994 if (atexit (delete_temp_files) != 0)
6995 fatal_error (input_location, "atexit failed");
6997 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
6998 signal (SIGINT, fatal_signal);
7000 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
7001 signal (SIGHUP, fatal_signal);
7003 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
7004 signal (SIGTERM, fatal_signal);
7006 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
7007 signal (SIGPIPE, fatal_signal);
7010 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
7011 receive the signal. A different setting is inheritable */
7012 signal (SIGCHLD, SIG_DFL);
7015 /* Parsing and gimplification sometimes need quite large stack.
7016 Increase stack size limits if possible. */
7017 stack_limit_increase (64 * 1024 * 1024);
7019 /* Allocate the argument vector. */
7022 obstack_init (&obstack);
7025 /* Build multilib_select, et. al from the separate lines that make up each
7026 multilib selection. */
7029 driver::build_multilib_strings () const
7033 const char *const *q = multilib_raw;
7036 obstack_init (&multilib_obstack);
7037 while ((p = *q++) != (char *) 0)
7038 obstack_grow (&multilib_obstack, p, strlen (p));
7040 obstack_1grow (&multilib_obstack, 0);
7041 multilib_select = XOBFINISH (&multilib_obstack, const char *);
7043 q = multilib_matches_raw;
7044 while ((p = *q++) != (char *) 0)
7045 obstack_grow (&multilib_obstack, p, strlen (p));
7047 obstack_1grow (&multilib_obstack, 0);
7048 multilib_matches = XOBFINISH (&multilib_obstack, const char *);
7050 q = multilib_exclusions_raw;
7051 while ((p = *q++) != (char *) 0)
7052 obstack_grow (&multilib_obstack, p, strlen (p));
7054 obstack_1grow (&multilib_obstack, 0);
7055 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *);
7057 q = multilib_reuse_raw;
7058 while ((p = *q++) != (char *) 0)
7059 obstack_grow (&multilib_obstack, p, strlen (p));
7061 obstack_1grow (&multilib_obstack, 0);
7062 multilib_reuse = XOBFINISH (&multilib_obstack, const char *);
7065 for (size_t i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
7068 obstack_1grow (&multilib_obstack, ' ');
7069 obstack_grow (&multilib_obstack,
7070 multilib_defaults_raw[i],
7071 strlen (multilib_defaults_raw[i]));
7075 obstack_1grow (&multilib_obstack, 0);
7076 multilib_defaults = XOBFINISH (&multilib_obstack, const char *);
7080 /* Set up the spec-handling machinery. */
7083 driver::set_up_specs () const
7085 const char *spec_machine_suffix;
7089 #ifdef INIT_ENVIRONMENT
7090 /* Set up any other necessary machine specific environment variables. */
7091 xputenv (INIT_ENVIRONMENT);
7094 /* Make a table of what switches there are (switches, n_switches).
7095 Make a table of specified input files (infiles, n_infiles).
7096 Decode switches that are handled locally. */
7098 process_command (decoded_options_count, decoded_options);
7100 /* Initialize the vector of specs to just the default.
7101 This means one element containing 0s, as a terminator. */
7103 compilers = XNEWVAR (struct compiler, sizeof default_compilers);
7104 memcpy (compilers, default_compilers, sizeof default_compilers);
7105 n_compilers = n_default_compilers;
7107 /* Read specs from a file if there is one. */
7109 machine_suffix = concat (spec_host_machine, dir_separator_str, spec_version,
7110 accel_dir_suffix, dir_separator_str, NULL);
7111 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
7113 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true);
7114 /* Read the specs file unless it is a default one. */
7115 if (specs_file != 0 && strcmp (specs_file, "specs"))
7116 read_specs (specs_file, true, false);
7120 #ifdef ACCEL_COMPILER
7121 spec_machine_suffix = machine_suffix;
7123 spec_machine_suffix = just_machine_suffix;
7126 /* We need to check standard_exec_prefix/spec_machine_suffix/specs
7127 for any override of as, ld and libraries. */
7128 specs_file = (char *) alloca (strlen (standard_exec_prefix)
7129 + strlen (spec_machine_suffix) + sizeof ("specs"));
7130 strcpy (specs_file, standard_exec_prefix);
7131 strcat (specs_file, spec_machine_suffix);
7132 strcat (specs_file, "specs");
7133 if (access (specs_file, R_OK) == 0)
7134 read_specs (specs_file, true, false);
7136 /* Process any configure-time defaults specified for the command line
7137 options, via OPTION_DEFAULT_SPECS. */
7138 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
7139 do_option_spec (option_default_specs[i].name,
7140 option_default_specs[i].spec);
7142 /* Process DRIVER_SELF_SPECS, adding any new options to the end
7143 of the command line. */
7145 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
7146 do_self_spec (driver_self_specs[i]);
7148 /* If not cross-compiling, look for executables in the standard
7150 if (*cross_compile == '0')
7152 if (*md_exec_prefix)
7154 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
7155 PREFIX_PRIORITY_LAST, 0, 0);
7159 /* Process sysroot_suffix_spec. */
7160 if (*sysroot_suffix_spec != 0
7161 && !no_sysroot_suffix
7162 && do_spec_2 (sysroot_suffix_spec) == 0)
7164 if (argbuf.length () > 1)
7165 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
7166 else if (argbuf.length () == 1)
7167 target_sysroot_suffix = xstrdup (argbuf.last ());
7170 #ifdef HAVE_LD_SYSROOT
7171 /* Pass the --sysroot option to the linker, if it supports that. If
7172 there is a sysroot_suffix_spec, it has already been processed by
7173 this point, so target_system_root really is the system root we
7175 if (target_system_root)
7177 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
7178 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
7179 set_spec ("link", XOBFINISH (&obstack, const char *), false);
7183 /* Process sysroot_hdrs_suffix_spec. */
7184 if (*sysroot_hdrs_suffix_spec != 0
7185 && !no_sysroot_suffix
7186 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
7188 if (argbuf.length () > 1)
7189 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
7190 else if (argbuf.length () == 1)
7191 target_sysroot_hdrs_suffix = xstrdup (argbuf.last ());
7194 /* Look for startfiles in the standard places. */
7195 if (*startfile_prefix_spec != 0
7196 && do_spec_2 (startfile_prefix_spec) == 0
7197 && do_spec_1 (" ", 0, NULL) == 0)
7201 FOR_EACH_VEC_ELT (argbuf, ndx, arg)
7202 add_sysrooted_prefix (&startfile_prefixes, arg, "BINUTILS",
7203 PREFIX_PRIORITY_LAST, 0, 1);
7205 /* We should eventually get rid of all these and stick to
7206 startfile_prefix_spec exclusively. */
7207 else if (*cross_compile == '0' || target_system_root)
7209 if (*md_startfile_prefix)
7210 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
7211 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
7213 if (*md_startfile_prefix_1)
7214 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
7215 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
7217 /* If standard_startfile_prefix is relative, base it on
7218 standard_exec_prefix. This lets us move the installed tree
7219 as a unit. If GCC_EXEC_PREFIX is defined, base
7220 standard_startfile_prefix on that as well.
7222 If the prefix is relative, only search it for native compilers;
7223 otherwise we will search a directory containing host libraries. */
7224 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
7225 add_sysrooted_prefix (&startfile_prefixes,
7226 standard_startfile_prefix, "BINUTILS",
7227 PREFIX_PRIORITY_LAST, 0, 1);
7228 else if (*cross_compile == '0')
7230 add_prefix (&startfile_prefixes,
7231 concat (gcc_exec_prefix
7232 ? gcc_exec_prefix : standard_exec_prefix,
7234 standard_startfile_prefix, NULL),
7235 NULL, PREFIX_PRIORITY_LAST, 0, 1);
7238 /* Sysrooted prefixes are relocated because target_system_root is
7239 also relocated by gcc_exec_prefix. */
7240 if (*standard_startfile_prefix_1)
7241 add_sysrooted_prefix (&startfile_prefixes,
7242 standard_startfile_prefix_1, "BINUTILS",
7243 PREFIX_PRIORITY_LAST, 0, 1);
7244 if (*standard_startfile_prefix_2)
7245 add_sysrooted_prefix (&startfile_prefixes,
7246 standard_startfile_prefix_2, "BINUTILS",
7247 PREFIX_PRIORITY_LAST, 0, 1);
7250 /* Process any user specified specs in the order given on the command
7252 for (struct user_specs *uptr = user_specs_head; uptr; uptr = uptr->next)
7254 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
7256 read_specs (filename ? filename : uptr->filename, false, true);
7259 /* Process any user self specs. */
7261 struct spec_list *sl;
7262 for (sl = specs; sl; sl = sl->next)
7263 if (sl->name_len == sizeof "self_spec" - 1
7264 && !strcmp (sl->name, "self_spec"))
7265 do_self_spec (*sl->ptr_spec);
7270 enum save_temps save;
7272 if (!compare_debug_second)
7274 n_switches_debug_check[1] = n_switches;
7275 n_switches_alloc_debug_check[1] = n_switches_alloc;
7276 switches_debug_check[1] = XDUPVEC (struct switchstr, switches,
7279 do_self_spec ("%:compare-debug-self-opt()");
7280 n_switches_debug_check[0] = n_switches;
7281 n_switches_alloc_debug_check[0] = n_switches_alloc;
7282 switches_debug_check[0] = switches;
7284 n_switches = n_switches_debug_check[1];
7285 n_switches_alloc = n_switches_alloc_debug_check[1];
7286 switches = switches_debug_check[1];
7289 /* Avoid crash when computing %j in this early. */
7290 save = save_temps_flag;
7291 save_temps_flag = SAVE_TEMPS_NONE;
7293 compare_debug = -compare_debug;
7294 do_self_spec ("%:compare-debug-self-opt()");
7296 save_temps_flag = save;
7298 if (!compare_debug_second)
7300 n_switches_debug_check[1] = n_switches;
7301 n_switches_alloc_debug_check[1] = n_switches_alloc;
7302 switches_debug_check[1] = switches;
7303 compare_debug = -compare_debug;
7304 n_switches = n_switches_debug_check[0];
7305 n_switches_alloc = n_switches_debug_check[0];
7306 switches = switches_debug_check[0];
7311 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
7312 if (gcc_exec_prefix)
7313 gcc_exec_prefix = concat (gcc_exec_prefix, spec_host_machine,
7314 dir_separator_str, spec_version,
7315 accel_dir_suffix, dir_separator_str, NULL);
7317 /* Now we have the specs.
7318 Set the `valid' bits for switches that match anything in any spec. */
7320 validate_all_switches ();
7322 /* Now that we have the switches and the specs, set
7323 the subdirectory based on the options. */
7324 set_multilib_dir ();
7327 /* Set up to remember the pathname of gcc and any options
7328 needed for collect. We use argv[0] instead of progname because
7329 we need the complete pathname. */
7332 driver::putenv_COLLECT_GCC (const char *argv0) const
7334 obstack_init (&collect_obstack);
7335 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
7336 obstack_grow (&collect_obstack, argv0, strlen (argv0) + 1);
7337 xputenv (XOBFINISH (&collect_obstack, char *));
7340 /* Set up to remember the pathname of the lto wrapper. */
7343 driver::maybe_putenv_COLLECT_LTO_WRAPPER () const
7345 char *lto_wrapper_file;
7348 lto_wrapper_file = NULL;
7350 lto_wrapper_file = find_a_file (&exec_prefixes, "lto-wrapper",
7352 if (lto_wrapper_file)
7354 lto_wrapper_file = convert_white_space (lto_wrapper_file);
7355 lto_wrapper_spec = lto_wrapper_file;
7356 obstack_init (&collect_obstack);
7357 obstack_grow (&collect_obstack, "COLLECT_LTO_WRAPPER=",
7358 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
7359 obstack_grow (&collect_obstack, lto_wrapper_spec,
7360 strlen (lto_wrapper_spec) + 1);
7361 xputenv (XOBFINISH (&collect_obstack, char *));
7366 /* Set up to remember the names of offload targets. */
7369 driver::maybe_putenv_OFFLOAD_TARGETS () const
7371 const char *targets = offload_targets;
7373 /* If no targets specified by -foffload, use all available targets. */
7375 targets = OFFLOAD_TARGETS;
7377 if (strlen (targets) > 0)
7379 obstack_grow (&collect_obstack, "OFFLOAD_TARGET_NAMES=",
7380 sizeof ("OFFLOAD_TARGET_NAMES=") - 1);
7381 obstack_grow (&collect_obstack, targets,
7382 strlen (targets) + 1);
7383 xputenv (XOBFINISH (&collect_obstack, char *));
7386 free (offload_targets);
7389 /* Reject switches that no pass was interested in. */
7392 driver::handle_unrecognized_options () const
7394 for (size_t i = 0; (int) i < n_switches; i++)
7395 if (! switches[i].validated)
7396 error ("unrecognized command line option %<-%s%>", switches[i].part1);
7399 /* Handle the various -print-* options, returning 0 if the driver
7400 should exit, or nonzero if the driver should continue. */
7403 driver::maybe_print_and_exit () const
7405 if (print_search_dirs)
7407 printf (_("install: %s\n"), STD_EXEC_PATH);
7408 printf (_("programs: %s\n"),
7409 build_search_list (&exec_prefixes, "", false, false));
7410 printf (_("libraries: %s\n"),
7411 build_search_list (&startfile_prefixes, "", false, true));
7415 if (print_file_name)
7417 printf ("%s\n", find_file (print_file_name));
7421 if (print_prog_name)
7423 if (use_ld != NULL && ! strcmp (print_prog_name, "ld"))
7425 /* Append USE_LD to to the default linker. */
7426 #ifdef DEFAULT_LINKER
7428 # ifdef HAVE_HOST_EXECUTABLE_SUFFIX
7429 int len = (sizeof (DEFAULT_LINKER)
7430 - sizeof (HOST_EXECUTABLE_SUFFIX));
7434 char *default_linker = xstrdup (DEFAULT_LINKER);
7435 /* Strip HOST_EXECUTABLE_SUFFIX if DEFAULT_LINKER contains
7436 HOST_EXECUTABLE_SUFFIX. */
7437 if (! strcmp (&default_linker[len], HOST_EXECUTABLE_SUFFIX))
7439 default_linker[len] = '\0';
7440 ld = concat (default_linker, use_ld,
7441 HOST_EXECUTABLE_SUFFIX, NULL);
7446 ld = concat (DEFAULT_LINKER, use_ld, NULL);
7447 if (access (ld, X_OK) == 0)
7449 printf ("%s\n", ld);
7453 print_prog_name = concat (print_prog_name, use_ld, NULL);
7455 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
7456 printf ("%s\n", (newname ? newname : print_prog_name));
7460 if (print_multi_lib)
7462 print_multilib_info ();
7466 if (print_multi_directory)
7468 if (multilib_dir == NULL)
7471 printf ("%s\n", multilib_dir);
7475 if (print_multiarch)
7477 if (multiarch_dir == NULL)
7480 printf ("%s\n", multiarch_dir);
7486 if (target_system_root)
7488 if (target_sysroot_suffix)
7489 printf ("%s%s\n", target_system_root, target_sysroot_suffix);
7491 printf ("%s\n", target_system_root);
7496 if (print_multi_os_directory)
7498 if (multilib_os_dir == NULL)
7501 printf ("%s\n", multilib_os_dir);
7505 if (print_sysroot_headers_suffix)
7507 if (*sysroot_hdrs_suffix_spec)
7509 printf("%s\n", (target_sysroot_hdrs_suffix
7510 ? target_sysroot_hdrs_suffix
7515 /* The error status indicates that only one set of fixed
7516 headers should be built. */
7517 fatal_error (input_location,
7518 "not configured with sysroot headers suffix");
7521 if (print_help_list)
7527 printf (_("\nFor bug reporting instructions, please see:\n"));
7528 printf ("%s.\n", bug_report_url);
7533 /* We do not exit here. Instead we have created a fake input file
7534 called 'help-dummy' which needs to be compiled, and we pass this
7535 on the various sub-processes, along with the --help switch.
7536 Ensure their output appears after ours. */
7537 fputc ('\n', stdout);
7543 printf (_("%s %s%s\n"), progname, pkgversion_string,
7545 printf ("Copyright %s 2015 Free Software Foundation, Inc.\n",
7547 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
7548 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
7553 /* We do not exit here. We use the same mechanism of --help to print
7554 the version of the sub-processes. */
7555 fputc ('\n', stdout);
7561 print_configuration (stderr);
7569 /* Figure out what to do with each input file.
7570 Return true if we need to exit early from "main", false otherwise. */
7573 driver::prepare_infiles ()
7576 int lang_n_infiles = 0;
7578 if (n_infiles == added_libraries)
7579 fatal_error (input_location, "no input files");
7582 /* Early exit needed from main. */
7585 /* Make a place to record the compiler output file names
7586 that correspond to the input files. */
7589 i += lang_specific_extra_outfiles;
7590 outfiles = XCNEWVEC (const char *, i);
7592 /* Record which files were specified explicitly as link input. */
7594 explicit_link_files = XCNEWVEC (char, n_infiles);
7596 combine_inputs = have_o || flag_wpa;
7598 for (i = 0; (int) i < n_infiles; i++)
7600 const char *name = infiles[i].name;
7601 struct compiler *compiler = lookup_compiler (name,
7603 infiles[i].language);
7605 if (compiler && !(compiler->combinable))
7606 combine_inputs = false;
7608 if (lang_n_infiles > 0 && compiler != input_file_compiler
7609 && infiles[i].language && infiles[i].language[0] != '*')
7610 infiles[i].incompiler = compiler;
7614 input_file_compiler = compiler;
7615 infiles[i].incompiler = compiler;
7619 /* Since there is no compiler for this input file, assume it is a
7621 explicit_link_files[i] = 1;
7622 infiles[i].incompiler = NULL;
7624 infiles[i].compiled = false;
7625 infiles[i].preprocessed = false;
7628 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1)
7629 fatal_error (input_location,
7630 "cannot specify -o with -c, -S or -E with multiple files");
7632 /* No early exit needed from main; we can continue. */
7636 /* Run the spec machinery on each input file. */
7639 driver::do_spec_on_infiles () const
7643 for (i = 0; (int) i < n_infiles; i++)
7645 int this_file_error = 0;
7647 /* Tell do_spec what to substitute for %i. */
7649 input_file_number = i;
7650 set_input (infiles[i].name);
7652 if (infiles[i].compiled)
7655 /* Use the same thing in %o, unless cp->spec says otherwise. */
7657 outfiles[i] = gcc_input_filename;
7659 /* Figure out which compiler from the file's suffix. */
7662 = lookup_compiler (infiles[i].name, input_filename_length,
7663 infiles[i].language);
7665 if (input_file_compiler)
7667 /* Ok, we found an applicable compiler. Run its spec. */
7669 if (input_file_compiler->spec[0] == '#')
7671 error ("%s: %s compiler not installed on this system",
7672 gcc_input_filename, &input_file_compiler->spec[1]);
7673 this_file_error = 1;
7681 free (debug_check_temp_file[0]);
7682 debug_check_temp_file[0] = NULL;
7684 free (debug_check_temp_file[1]);
7685 debug_check_temp_file[1] = NULL;
7688 value = do_spec (input_file_compiler->spec);
7689 infiles[i].compiled = true;
7691 this_file_error = 1;
7692 else if (compare_debug && debug_check_temp_file[0])
7695 inform (0, "recompiling with -fcompare-debug");
7697 compare_debug = -compare_debug;
7698 n_switches = n_switches_debug_check[1];
7699 n_switches_alloc = n_switches_alloc_debug_check[1];
7700 switches = switches_debug_check[1];
7702 value = do_spec (input_file_compiler->spec);
7704 compare_debug = -compare_debug;
7705 n_switches = n_switches_debug_check[0];
7706 n_switches_alloc = n_switches_alloc_debug_check[0];
7707 switches = switches_debug_check[0];
7711 error ("during -fcompare-debug recompilation");
7712 this_file_error = 1;
7715 gcc_assert (debug_check_temp_file[1]
7716 && filename_cmp (debug_check_temp_file[0],
7717 debug_check_temp_file[1]));
7720 inform (0, "comparing final insns dumps");
7722 if (compare_files (debug_check_temp_file))
7723 this_file_error = 1;
7728 free (debug_check_temp_file[0]);
7729 debug_check_temp_file[0] = NULL;
7731 free (debug_check_temp_file[1]);
7732 debug_check_temp_file[1] = NULL;
7737 /* If this file's name does not contain a recognized suffix,
7738 record it as explicit linker input. */
7741 explicit_link_files[i] = 1;
7743 /* Clear the delete-on-failure queue, deleting the files in it
7744 if this compilation failed. */
7746 if (this_file_error)
7748 delete_failure_queue ();
7751 /* If this compilation succeeded, don't delete those files later. */
7752 clear_failure_queue ();
7755 /* Reset the input file name to the first compile/object file name, for use
7756 with %b in LINK_SPEC. We use the first input file that we can find
7757 a compiler to compile it instead of using infiles.language since for
7758 languages other than C we use aliases that we then lookup later. */
7763 for (i = 0; i < n_infiles ; i++)
7764 if (infiles[i].incompiler
7765 || (infiles[i].language && infiles[i].language[0] != '*'))
7767 set_input (infiles[i].name);
7774 /* Make sure INPUT_FILE_NUMBER points to first available open
7776 input_file_number = n_infiles;
7777 if (lang_specific_pre_link ())
7782 /* If we have to run the linker, do it now. */
7785 driver::maybe_run_linker (const char *argv0) const
7788 int linker_was_run = 0;
7789 int num_linker_inputs;
7791 /* Determine if there are any linker input files. */
7792 num_linker_inputs = 0;
7793 for (i = 0; (int) i < n_infiles; i++)
7794 if (explicit_link_files[i] || outfiles[i] != NULL)
7795 num_linker_inputs++;
7797 /* Run ld to link all the compiler output files. */
7799 if (num_linker_inputs > 0 && !seen_error () && print_subprocess_help < 2)
7801 int tmp = execution_count;
7805 #if HAVE_LTO_PLUGIN > 0
7806 #if HAVE_LTO_PLUGIN == 2
7807 const char *fno_use_linker_plugin = "fno-use-linker-plugin";
7809 const char *fuse_linker_plugin = "fuse-linker-plugin";
7813 /* We'll use ld if we can't find collect2. */
7814 if (! strcmp (linker_name_spec, "collect2"))
7816 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false);
7818 linker_name_spec = "ld";
7821 #if HAVE_LTO_PLUGIN > 0
7822 #if HAVE_LTO_PLUGIN == 2
7823 if (!switch_matches (fno_use_linker_plugin,
7824 fno_use_linker_plugin
7825 + strlen (fno_use_linker_plugin), 0))
7827 if (switch_matches (fuse_linker_plugin,
7829 + strlen (fuse_linker_plugin), 0))
7832 char *temp_spec = find_a_file (&exec_prefixes,
7833 LTOPLUGINSONAME, R_OK,
7836 fatal_error (input_location,
7837 "-fuse-linker-plugin, but %s not found",
7839 linker_plugin_file_spec = convert_white_space (temp_spec);
7842 lto_gcc_spec = argv0;
7845 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
7847 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false);
7848 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true);
7850 if (print_subprocess_help == 1)
7852 printf (_("\nLinker options\n==============\n\n"));
7853 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
7854 " to the linker.\n\n"));
7857 int value = do_spec (link_command_spec);
7860 linker_was_run = (tmp != execution_count);
7863 /* If options said don't run linker,
7864 complain about input files to be given to the linker. */
7866 if (! linker_was_run && !seen_error ())
7867 for (i = 0; (int) i < n_infiles; i++)
7868 if (explicit_link_files[i]
7869 && !(infiles[i].language && infiles[i].language[0] == '*'))
7870 warning (0, "%s: linker input file unused because linking not done",
7874 /* The end of "main". */
7877 driver::final_actions () const
7879 /* Delete some or all of the temporary files we made. */
7882 delete_failure_queue ();
7883 delete_temp_files ();
7885 if (print_help_list)
7887 printf (("\nFor bug reporting instructions, please see:\n"));
7888 printf ("%s\n", bug_report_url);
7892 /* Determine what the exit code of the driver should be. */
7895 driver::get_exit_code () const
7897 return (signal_count != 0 ? 2
7898 : seen_error () ? (pass_exit_codes ? greatest_status : 1)
7902 /* Find the proper compilation spec for the file name NAME,
7903 whose length is LENGTH. LANGUAGE is the specified language,
7904 or 0 if this file is to be passed to the linker. */
7906 static struct compiler *
7907 lookup_compiler (const char *name, size_t length, const char *language)
7909 struct compiler *cp;
7911 /* If this was specified by the user to be a linker input, indicate that. */
7912 if (language != 0 && language[0] == '*')
7915 /* Otherwise, look for the language, if one is spec'd. */
7918 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
7919 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
7922 error ("language %s not recognized", language);
7926 /* Look for a suffix. */
7927 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
7929 if (/* The suffix `-' matches only the file name `-'. */
7930 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
7931 || (strlen (cp->suffix) < length
7932 /* See if the suffix matches the end of NAME. */
7933 && !strcmp (cp->suffix,
7934 name + length - strlen (cp->suffix))
7939 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
7940 /* Look again, but case-insensitively this time. */
7942 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
7944 if (/* The suffix `-' matches only the file name `-'. */
7945 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
7946 || (strlen (cp->suffix) < length
7947 /* See if the suffix matches the end of NAME. */
7948 && ((!strcmp (cp->suffix,
7949 name + length - strlen (cp->suffix))
7950 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
7951 && !strcasecmp (cp->suffix,
7952 name + length - strlen (cp->suffix)))
7958 if (cp >= compilers)
7960 if (cp->spec[0] != '@')
7961 /* A non-alias entry: return it. */
7964 /* An alias entry maps a suffix to a language.
7965 Search for the language; pass 0 for NAME and LENGTH
7966 to avoid infinite recursion if language not found. */
7967 return lookup_compiler (NULL, 0, cp->spec + 1);
7973 save_string (const char *s, int len)
7975 char *result = XNEWVEC (char, len + 1);
7977 memcpy (result, s, len);
7983 pfatal_with_name (const char *name)
7985 perror_with_name (name);
7986 delete_temp_files ();
7991 perror_with_name (const char *name)
7993 error ("%s: %m", name);
7997 validate_switches_from_spec (const char *spec, bool user)
7999 const char *p = spec;
8002 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
8003 /* We have a switch spec. */
8004 p = validate_switches (p + 1, user);
8008 validate_all_switches (void)
8010 struct compiler *comp;
8011 struct spec_list *spec;
8013 for (comp = compilers; comp->spec; comp++)
8014 validate_switches_from_spec (comp->spec, false);
8016 /* Look through the linked list of specs read from the specs file. */
8017 for (spec = specs; spec; spec = spec->next)
8018 validate_switches_from_spec (*spec->ptr_spec, spec->user_p);
8020 validate_switches_from_spec (link_command_spec, false);
8023 /* Look at the switch-name that comes after START
8024 and mark as valid all supplied switches that match it. */
8027 validate_switches (const char *start, bool user_spec)
8029 const char *p = start;
8033 bool suffix = false;
8034 bool starred = false;
8036 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
8045 if (*p == '.' || *p == ',')
8049 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
8050 || *p == ',' || *p == '.' || *p == '@')
8055 starred = true, p++;
8061 /* Mark all matching switches as valid. */
8062 for (i = 0; i < n_switches; i++)
8063 if (!strncmp (switches[i].part1, atom, len)
8064 && (starred || switches[i].part1[len] == '\0')
8065 && (switches[i].known || user_spec))
8066 switches[i].validated = true;
8070 if (*p && (p[-1] == '|' || p[-1] == '&'))
8073 if (*p && p[-1] == ':')
8075 while (*p && *p != ';' && *p != '}')
8080 if (*p == '{' || *p == '<')
8081 p = validate_switches (p+1, user_spec);
8082 else if (p[0] == 'W' && p[1] == '{')
8083 p = validate_switches (p+2, user_spec);
8090 if (*p && p[-1] == ';')
8104 static struct mdswitchstr *mdswitches;
8105 static int n_mdswitches;
8107 /* Check whether a particular argument was used. The first time we
8108 canonicalize the switches to keep only the ones we care about. */
8111 used_arg (const char *p, int len)
8116 const char *replace;
8121 static struct mswitchstr *mswitches;
8122 static int n_mswitches;
8127 struct mswitchstr *matches;
8131 /* Break multilib_matches into the component strings of string
8132 and replacement string. */
8133 for (q = multilib_matches; *q != '\0'; q++)
8138 = (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
8140 q = multilib_matches;
8149 fatal_error (input_location, "multilib spec %qs is invalid",
8154 matches[i].len = q - matches[i].str;
8156 matches[i].replace = ++q;
8157 while (*q != ';' && *q != '\0')
8160 goto invalid_matches;
8163 matches[i].rep_len = q - matches[i].replace;
8169 /* Now build a list of the replacement string for switches that we care
8170 about. Make sure we allocate at least one entry. This prevents
8171 xmalloc from calling fatal, and prevents us from re-executing this
8174 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1));
8175 for (i = 0; i < n_switches; i++)
8176 if ((switches[i].live_cond & SWITCH_IGNORE) == 0)
8178 int xlen = strlen (switches[i].part1);
8179 for (j = 0; j < cnt; j++)
8180 if (xlen == matches[j].len
8181 && ! strncmp (switches[i].part1, matches[j].str, xlen))
8183 mswitches[n_mswitches].str = matches[j].replace;
8184 mswitches[n_mswitches].len = matches[j].rep_len;
8185 mswitches[n_mswitches].replace = (char *) 0;
8186 mswitches[n_mswitches].rep_len = 0;
8192 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
8193 on the command line nor any options mutually incompatible with
8195 for (i = 0; i < n_mdswitches; i++)
8199 for (q = multilib_options; *q != '\0'; *q && q++)
8205 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
8206 || strchr (" /", q[mdswitches[i].len]) == NULL)
8208 while (*q != ' ' && *q != '/' && *q != '\0')
8215 if (*q != ' ' && *q != '\0')
8217 while (*r != ' ' && *r != '\0')
8220 while (*q != ' ' && *q != '/' && *q != '\0')
8223 if (used_arg (r, q - r))
8228 mswitches[n_mswitches].str = mdswitches[i].str;
8229 mswitches[n_mswitches].len = mdswitches[i].len;
8230 mswitches[n_mswitches].replace = (char *) 0;
8231 mswitches[n_mswitches].rep_len = 0;
8244 for (i = 0; i < n_mswitches; i++)
8245 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
8252 default_arg (const char *p, int len)
8256 for (i = 0; i < n_mdswitches; i++)
8257 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
8263 /* Work out the subdirectory to use based on the options. The format of
8264 multilib_select is a list of elements. Each element is a subdirectory
8265 name followed by a list of options followed by a semicolon. The format
8266 of multilib_exclusions is the same, but without the preceding
8267 directory. First gcc will check the exclusions, if none of the options
8268 beginning with an exclamation point are present, and all of the other
8269 options are present, then we will ignore this completely. Passing
8270 that, gcc will consider each multilib_select in turn using the same
8271 rules for matching the options. If a match is found, that subdirectory
8273 A subdirectory name is optionally followed by a colon and the corresponding
8277 set_multilib_dir (void)
8280 unsigned int this_path_len;
8281 const char *this_path, *this_arg;
8282 const char *start, *end;
8284 int ok, ndfltok, first;
8287 start = multilib_defaults;
8288 while (*start == ' ' || *start == '\t')
8290 while (*start != '\0')
8293 while (*start != ' ' && *start != '\t' && *start != '\0')
8295 while (*start == ' ' || *start == '\t')
8303 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches);
8304 for (start = multilib_defaults; *start != '\0'; start = end + 1)
8306 while (*start == ' ' || *start == '\t')
8312 for (end = start + 1;
8313 *end != ' ' && *end != '\t' && *end != '\0'; end++)
8316 obstack_grow (&multilib_obstack, start, end - start);
8317 obstack_1grow (&multilib_obstack, 0);
8318 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *);
8319 mdswitches[i++].len = end - start;
8326 p = multilib_exclusions;
8329 /* Ignore newlines. */
8336 /* Check the arguments. */
8343 fatal_error (input_location, "multilib exclusions %qs is invalid",
8344 multilib_exclusions);
8354 while (*p != ' ' && *p != ';')
8357 goto invalid_exclusions;
8361 if (*this_arg != '!')
8369 ok = used_arg (this_arg, p - this_arg);
8384 p = multilib_select;
8386 /* Append multilib reuse rules if any. With those rules, we can reuse
8387 one multilib for certain different options sets. */
8388 if (strlen (multilib_reuse) > 0)
8389 p = concat (p, multilib_reuse, NULL);
8393 /* Ignore newlines. */
8400 /* Get the initial path. */
8407 fatal_error (input_location, "multilib select %qs %qs is invalid",
8408 multilib_select, multilib_reuse);
8412 this_path_len = p - this_path;
8414 /* Check the arguments. */
8421 goto invalid_select;
8430 while (*p != ' ' && *p != ';')
8433 goto invalid_select;
8437 if (*this_arg != '!')
8445 /* If this is a default argument, we can just ignore it.
8446 This is true even if this_arg begins with '!'. Beginning
8447 with '!' does not mean that this argument is necessarily
8448 inappropriate for this library: it merely means that
8449 there is a more specific library which uses this
8450 argument. If this argument is a default, we need not
8451 consider that more specific library. */
8452 ok = used_arg (this_arg, p - this_arg);
8459 if (default_arg (this_arg, p - this_arg))
8468 if (this_path_len != 1
8469 || this_path[0] != '.')
8471 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1);
8474 strncpy (new_multilib_dir, this_path, this_path_len);
8475 new_multilib_dir[this_path_len] = '\0';
8476 q = strchr (new_multilib_dir, ':');
8479 multilib_dir = new_multilib_dir;
8486 const char *q = this_path, *end = this_path + this_path_len;
8488 while (q < end && *q != ':')
8492 const char *q2 = q + 1, *ml_end = end;
8493 char *new_multilib_os_dir;
8495 while (q2 < end && *q2 != ':')
8499 if (ml_end - q == 1)
8500 multilib_os_dir = xstrdup (".");
8503 new_multilib_os_dir = XNEWVEC (char, ml_end - q);
8504 memcpy (new_multilib_os_dir, q + 1, ml_end - q - 1);
8505 new_multilib_os_dir[ml_end - q - 1] = '\0';
8506 multilib_os_dir = new_multilib_os_dir;
8509 if (q2 < end && *q2 == ':')
8511 char *new_multiarch_dir = XNEWVEC (char, end - q2);
8512 memcpy (new_multiarch_dir, q2 + 1, end - q2 - 1);
8513 new_multiarch_dir[end - q2 - 1] = '\0';
8514 multiarch_dir = new_multiarch_dir;
8523 if (multilib_dir == NULL && multilib_os_dir != NULL
8524 && strcmp (multilib_os_dir, ".") == 0)
8526 free (CONST_CAST (char *, multilib_os_dir));
8527 multilib_os_dir = NULL;
8529 else if (multilib_dir != NULL && multilib_os_dir == NULL)
8530 multilib_os_dir = multilib_dir;
8533 /* Print out the multiple library subdirectory selection
8534 information. This prints out a series of lines. Each line looks
8535 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
8536 required. Only the desired options are printed out, the negative
8537 matches. The options are print without a leading dash. There are
8538 no spaces to make it easy to use the information in the shell.
8539 Each subdirectory is printed only once. This assumes the ordering
8540 generated by the genmultilib script. Also, we leave out ones that match
8544 print_multilib_info (void)
8546 const char *p = multilib_select;
8547 const char *last_path = 0, *this_path;
8549 unsigned int last_path_len = 0;
8554 /* Ignore newlines. */
8561 /* Get the initial path. */
8568 fatal_error (input_location,
8569 "multilib select %qs is invalid", multilib_select);
8575 /* When --disable-multilib was used but target defines
8576 MULTILIB_OSDIRNAMES, entries starting with .: (and not starting
8577 with .:: for multiarch configurations) are there just to find
8578 multilib_os_dir, so skip them from output. */
8579 if (this_path[0] == '.' && this_path[1] == ':' && this_path[2] != ':')
8582 /* Check for matches with the multilib_exclusions. We don't bother
8583 with the '!' in either list. If any of the exclusion rules match
8584 all of its options with the select rule, we skip it. */
8586 const char *e = multilib_exclusions;
8587 const char *this_arg;
8592 /* Ignore newlines. */
8599 /* Check the arguments. */
8608 fatal_error (input_location,
8609 "multilib exclusion %qs is invalid",
8610 multilib_exclusions);
8621 while (*e != ' ' && *e != ';')
8624 goto invalid_exclusion;
8632 int len = e - this_arg;
8635 goto invalid_select;
8639 while (*q != ' ' && *q != ';')
8642 goto invalid_select;
8646 if (! strncmp (arg, this_arg,
8647 (len < q - arg) ? q - arg : len)
8648 || default_arg (this_arg, e - this_arg))
8678 /* If this is a duplicate, skip it. */
8679 skip = (last_path != 0
8680 && (unsigned int) (p - this_path) == last_path_len
8681 && ! filename_ncmp (last_path, this_path, last_path_len));
8683 last_path = this_path;
8684 last_path_len = p - this_path;
8687 /* If this directory requires any default arguments, we can skip
8688 it. We will already have printed a directory identical to
8689 this one which does not require that default argument. */
8700 goto invalid_select;
8707 while (*q != ' ' && *q != ';')
8710 goto invalid_select;
8715 && default_arg (arg, q - arg))
8730 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
8741 goto invalid_select;
8749 use_arg = *p != '!';
8754 while (*p != ' ' && *p != ';')
8757 goto invalid_select;
8769 /* If there are extra options, print them now. */
8770 if (multilib_extra && *multilib_extra)
8772 int print_at = TRUE;
8775 for (q = multilib_extra; *q != '\0'; q++)
8796 /* getenv built-in spec function.
8798 Returns the value of the environment variable given by its first
8799 argument, concatenated with the second argument. If the
8800 environment variable is not defined, a fatal error is issued. */
8803 getenv_spec_function (int argc, const char **argv)
8813 value = getenv (argv[0]);
8815 fatal_error (input_location,
8816 "environment variable %qs not defined", argv[0]);
8818 /* We have to escape every character of the environment variable so
8819 they are not interpreted as active spec characters. A
8820 particularly painful case is when we are reading a variable
8821 holding a windows path complete with \ separators. */
8822 len = strlen (value) * 2 + strlen (argv[1]) + 1;
8823 result = XNEWVAR (char, len);
8824 for (ptr = result; *value; ptr += 2)
8830 strcpy (ptr, argv[1]);
8835 /* if-exists built-in spec function.
8837 Checks to see if the file specified by the absolute pathname in
8838 ARGS exists. Returns that pathname if found.
8840 The usual use for this function is to check for a library file
8841 (whose name has been expanded with %s). */
8844 if_exists_spec_function (int argc, const char **argv)
8846 /* Must have only one argument. */
8847 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
8853 /* if-exists-else built-in spec function.
8855 This is like if-exists, but takes an additional argument which
8856 is returned if the first argument does not exist. */
8859 if_exists_else_spec_function (int argc, const char **argv)
8861 /* Must have exactly two arguments. */
8865 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
8871 /* sanitize built-in spec function.
8873 This returns non-NULL, if sanitizing address, thread or
8874 any of the undefined behavior sanitizers. */
8877 sanitize_spec_function (int argc, const char **argv)
8882 if (strcmp (argv[0], "address") == 0)
8883 return (flag_sanitize & SANITIZE_USER_ADDRESS) ? "" : NULL;
8884 if (strcmp (argv[0], "kernel-address") == 0)
8885 return (flag_sanitize & SANITIZE_KERNEL_ADDRESS) ? "" : NULL;
8886 if (strcmp (argv[0], "thread") == 0)
8887 return (flag_sanitize & SANITIZE_THREAD) ? "" : NULL;
8888 if (strcmp (argv[0], "undefined") == 0)
8889 return ((flag_sanitize & (SANITIZE_UNDEFINED | SANITIZE_NONDEFAULT))
8890 && !flag_sanitize_undefined_trap_on_error) ? "" : NULL;
8891 if (strcmp (argv[0], "leak") == 0)
8892 return ((flag_sanitize
8893 & (SANITIZE_ADDRESS | SANITIZE_LEAK | SANITIZE_THREAD))
8894 == SANITIZE_LEAK) ? "" : NULL;
8898 /* replace-outfile built-in spec function.
8900 This looks for the first argument in the outfiles array's name and
8901 replaces it with the second argument. */
8904 replace_outfile_spec_function (int argc, const char **argv)
8907 /* Must have exactly two arguments. */
8911 for (i = 0; i < n_infiles; i++)
8913 if (outfiles[i] && !filename_cmp (outfiles[i], argv[0]))
8914 outfiles[i] = xstrdup (argv[1]);
8919 /* remove-outfile built-in spec function.
8921 * This looks for the first argument in the outfiles array's name and
8925 remove_outfile_spec_function (int argc, const char **argv)
8928 /* Must have exactly one argument. */
8932 for (i = 0; i < n_infiles; i++)
8934 if (outfiles[i] && !filename_cmp (outfiles[i], argv[0]))
8940 /* Given two version numbers, compares the two numbers.
8941 A version number must match the regular expression
8942 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
8945 compare_version_strings (const char *v1, const char *v2)
8950 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
8951 REG_EXTENDED | REG_NOSUB) != 0)
8953 rresult = regexec (&r, v1, 0, NULL, 0);
8954 if (rresult == REG_NOMATCH)
8955 fatal_error (input_location, "invalid version number %qs", v1);
8956 else if (rresult != 0)
8958 rresult = regexec (&r, v2, 0, NULL, 0);
8959 if (rresult == REG_NOMATCH)
8960 fatal_error (input_location, "invalid version number %qs", v2);
8961 else if (rresult != 0)
8964 return strverscmp (v1, v2);
8968 /* version_compare built-in spec function.
8970 This takes an argument of the following form:
8972 <comparison-op> <arg1> [<arg2>] <switch> <result>
8974 and produces "result" if the comparison evaluates to true,
8975 and nothing if it doesn't.
8977 The supported <comparison-op> values are:
8979 >= true if switch is a later (or same) version than arg1
8981 < true if switch is an earlier version than arg1
8983 >< true if switch is arg1 or later, and earlier than arg2
8984 <> true if switch is earlier than arg1 or is arg2 or later
8986 If the switch is not present, the condition is false unless
8987 the first character of the <comparison-op> is '!'.
8990 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
8991 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
8994 version_compare_spec_function (int argc, const char **argv)
8998 const char *switch_value = NULL;
9003 fatal_error (input_location, "too few arguments to %%:version-compare");
9004 if (argv[0][0] == '\0')
9006 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!')
9008 if (argc != nargs + 3)
9009 fatal_error (input_location, "too many arguments to %%:version-compare");
9011 switch_len = strlen (argv[nargs + 1]);
9012 for (i = 0; i < n_switches; i++)
9013 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len)
9014 && check_live_switch (i, switch_len))
9015 switch_value = switches[i].part1 + switch_len;
9017 if (switch_value == NULL)
9021 comp1 = compare_version_strings (switch_value, argv[1]);
9023 comp2 = compare_version_strings (switch_value, argv[2]);
9025 comp2 = -1; /* This value unused. */
9028 switch (argv[0][0] << 8 | argv[0][1])
9030 case '>' << 8 | '=':
9031 result = comp1 >= 0;
9033 case '!' << 8 | '<':
9034 result = comp1 >= 0 || switch_value == NULL;
9039 case '!' << 8 | '>':
9040 result = comp1 < 0 || switch_value == NULL;
9042 case '>' << 8 | '<':
9043 result = comp1 >= 0 && comp2 < 0;
9045 case '<' << 8 | '>':
9046 result = comp1 < 0 || comp2 >= 0;
9050 fatal_error (input_location,
9051 "unknown operator %qs in %%:version-compare", argv[0]);
9056 return argv[nargs + 2];
9059 /* %:include builtin spec function. This differs from %include in that it
9060 can be nested inside a spec, and thus be conditionalized. It takes
9061 one argument, the filename, and looks for it in the startfile path.
9062 The result is always NULL, i.e. an empty expansion. */
9065 include_spec_function (int argc, const char **argv)
9072 file = find_a_file (&startfile_prefixes, argv[0], R_OK, true);
9073 read_specs (file ? file : argv[0], false, false);
9078 /* %:find-file spec function. This function replaces its argument by
9079 the file found through find_file, that is the -print-file-name gcc
9082 find_file_spec_function (int argc, const char **argv)
9089 file = find_file (argv[0]);
9094 /* %:find-plugindir spec function. This function replaces its argument
9095 by the -iplugindir=<dir> option. `dir' is found through find_file, that
9096 is the -print-file-name gcc program option. */
9098 find_plugindir_spec_function (int argc, const char **argv ATTRIBUTE_UNUSED)
9105 option = concat ("-iplugindir=", find_file ("plugin"), NULL);
9110 /* %:print-asm-header spec function. Print a banner to say that the
9111 following output is from the assembler. */
9114 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED,
9115 const char **argv ATTRIBUTE_UNUSED)
9117 printf (_("Assembler options\n=================\n\n"));
9118 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
9123 /* Get a random number for -frandom-seed */
9125 static unsigned HOST_WIDE_INT
9126 get_random_number (void)
9128 unsigned HOST_WIDE_INT ret = 0;
9131 fd = open ("/dev/urandom", O_RDONLY);
9134 read (fd, &ret, sizeof (HOST_WIDE_INT));
9140 /* Get some more or less random data. */
9141 #ifdef HAVE_GETTIMEOFDAY
9145 gettimeofday (&tv, NULL);
9146 ret = tv.tv_sec * 1000 + tv.tv_usec / 1000;
9150 time_t now = time (NULL);
9152 if (now != (time_t)-1)
9153 ret = (unsigned) now;
9157 return ret ^ getpid ();
9160 /* %:compare-debug-dump-opt spec function. Save the last argument,
9161 expected to be the last -fdump-final-insns option, or generate a
9165 compare_debug_dump_opt_spec_function (int arg,
9166 const char **argv ATTRIBUTE_UNUSED)
9171 static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3];
9174 fatal_error (input_location,
9175 "too many arguments to %%:compare-debug-dump-opt");
9177 do_spec_2 ("%{fdump-final-insns=*:%*}");
9178 do_spec_1 (" ", 0, NULL);
9180 if (argbuf.length () > 0
9181 && strcmp (argv[argbuf.length () - 1], "."))
9186 name = xstrdup (argv[argbuf.length () - 1]);
9191 const char *ext = NULL;
9193 if (argbuf.length () > 0)
9195 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
9198 else if (!compare_debug)
9201 do_spec_2 ("%g.gkd");
9203 do_spec_1 (" ", 0, NULL);
9205 gcc_assert (argbuf.length () > 0);
9207 name = concat (argbuf.last (), ext, NULL);
9209 ret = concat ("-fdump-final-insns=", name, NULL);
9212 which = compare_debug < 0;
9213 debug_check_temp_file[which] = name;
9217 unsigned HOST_WIDE_INT value = get_random_number ();
9219 sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value);
9225 ret = concat ("%{!frandom-seed=*:-frandom-seed=", random_seed, "} ",
9236 static const char *debug_auxbase_opt;
9238 /* %:compare-debug-self-opt spec function. Expands to the options
9239 that are to be passed in the second compilation of
9243 compare_debug_self_opt_spec_function (int arg,
9244 const char **argv ATTRIBUTE_UNUSED)
9247 fatal_error (input_location,
9248 "too many arguments to %%:compare-debug-self-opt");
9250 if (compare_debug >= 0)
9253 do_spec_2 ("%{c|S:%{o*:%*}}");
9254 do_spec_1 (" ", 0, NULL);
9256 if (argbuf.length () > 0)
9257 debug_auxbase_opt = concat ("-auxbase-strip ",
9261 debug_auxbase_opt = NULL;
9264 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
9265 %<fdump-final-insns=* -w -S -o %j \
9266 %{!fcompare-debug-second:-fcompare-debug-second} \
9267 ", compare_debug_opt, NULL);
9270 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
9271 options that are to be passed in the second compilation of
9272 compare-debug. It expects, as an argument, the basename of the
9273 current input file name, with the .gk suffix appended to it. */
9276 compare_debug_auxbase_opt_spec_function (int arg,
9283 fatal_error (input_location,
9284 "too few arguments to %%:compare-debug-auxbase-opt");
9287 fatal_error (input_location,
9288 "too many arguments to %%:compare-debug-auxbase-opt");
9290 if (compare_debug >= 0)
9293 len = strlen (argv[0]);
9294 if (len < 3 || strcmp (argv[0] + len - 3, ".gk") != 0)
9295 fatal_error (input_location, "argument to %%:compare-debug-auxbase-opt "
9296 "does not end in .gk");
9298 if (debug_auxbase_opt)
9299 return debug_auxbase_opt;
9301 #define OPT "-auxbase "
9304 name = (char*) xmalloc (sizeof (OPT) + len);
9305 memcpy (name, OPT, sizeof (OPT) - 1);
9306 memcpy (name + sizeof (OPT) - 1, argv[0], len);
9307 name[sizeof (OPT) - 1 + len] = '\0';
9314 /* %:pass-through-libs spec function. Finds all -l options and input
9315 file names in the lib spec passed to it, and makes a list of them
9316 prepended with the plugin option to cause them to be passed through
9317 to the final link after all the new object files have been added. */
9320 pass_through_libs_spec_func (int argc, const char **argv)
9322 char *prepended = xstrdup (" ");
9324 /* Shlemiel the painter's algorithm. Innately horrible, but at least
9325 we know that there will never be more than a handful of strings to
9326 concat, and it's only once per run, so it's not worth optimising. */
9327 for (n = 0; n < argc; n++)
9329 char *old = prepended;
9330 /* Anything that isn't an option is a full path to an output
9331 file; pass it through if it ends in '.a'. Among options,
9333 if (argv[n][0] == '-' && argv[n][1] == 'l')
9335 const char *lopt = argv[n] + 2;
9336 /* Handle both joined and non-joined -l options. If for any
9337 reason there's a trailing -l with no joined or following
9338 arg just discard it. */
9339 if (!*lopt && ++n >= argc)
9343 prepended = concat (prepended, "-plugin-opt=-pass-through=-l",
9346 else if (!strcmp (".a", argv[n] + strlen (argv[n]) - 2))
9348 prepended = concat (prepended, "-plugin-opt=-pass-through=",
9349 argv[n], " ", NULL);
9351 if (prepended != old)
9357 /* %:replace-extension spec function. Replaces the extension of the
9358 first argument with the second argument. */
9361 replace_extension_spec_func (int argc, const char **argv)
9369 fatal_error (input_location, "too few arguments to %%:replace-extension");
9371 name = xstrdup (argv[0]);
9373 for (i = strlen (name) - 1; i >= 0; i--)
9374 if (IS_DIR_SEPARATOR (name[i]))
9377 p = strrchr (name + i + 1, '.');
9381 result = concat (name, argv[1], NULL);
9387 /* Insert backslash before spaces in ORIG (usually a file path), to
9388 avoid being broken by spec parser.
9390 This function is needed as do_spec_1 treats white space (' ' and '\t')
9391 as the end of an argument. But in case of -plugin /usr/gcc install/xxx.so,
9392 the file name should be treated as a single argument rather than being
9393 broken into multiple. Solution is to insert '\\' before the space in a
9396 This function converts and only converts all occurrence of ' '
9397 to '\\' + ' ' and '\t' to '\\' + '\t'. For example:
9401 "a\\ b" -> "a\\\\ b"
9403 orig: input null-terminating string that was allocated by xalloc. The
9404 memory it points to might be freed in this function. Behavior undefined
9405 if ORIG wasn't xalloced or was freed already at entry.
9407 Return: ORIG if no conversion needed. Otherwise a newly allocated string
9408 that was converted from ORIG. */
9411 convert_white_space (char *orig)
9413 int len, number_of_space = 0;
9415 for (len = 0; orig[len]; len++)
9416 if (orig[len] == ' ' || orig[len] == '\t') number_of_space++;
9418 if (number_of_space)
9420 char *new_spec = (char *) xmalloc (len + number_of_space + 1);
9422 for (j = 0, k = 0; j <= len; j++, k++)
9424 if (orig[j] == ' ' || orig[j] == '\t')
9425 new_spec[k++] = '\\';
9426 new_spec[k] = orig[j];
9436 Targets can provide configure-time default options in
9437 OPTION_DEFAULT_SPECS. The jit needs to access these, but
9438 they are expressed in the spec language.
9440 Run just enough of the driver to be able to expand these
9441 specs, and then call the callback CB on each
9442 such option. The options strings are *without* a leading
9443 '-' character e.g. ("march=x86-64"). Finally, clean up. */
9446 driver_get_configure_time_options (void (*cb) (const char *option,
9452 obstack_init (&obstack);
9453 gcc_obstack_init (&opts_obstack);
9456 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
9457 do_option_spec (option_default_specs[i].name,
9458 option_default_specs[i].spec);
9460 for (i = 0; (int) i < n_switches; i++)
9462 gcc_assert (switches[i].part1);
9463 (*cb) (switches[i].part1, user_data);
9466 obstack_free (&opts_obstack, NULL);
9467 obstack_free (&obstack, NULL);