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 ("specs %%include syntax malformed after "
1901 (long) (p1 - buffer + 1));
1904 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1905 read_specs (new_filename ? new_filename : p1, false, user_p);
1908 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1909 && (p1[sizeof "%include_noerr" - 1] == ' '
1910 || p1[sizeof "%include_noerr" - 1] == '\t'))
1914 p1 += sizeof "%include_noerr";
1915 while (*p1 == ' ' || *p1 == '\t')
1918 if (*p1++ != '<' || p[-2] != '>')
1919 fatal_error ("specs %%include syntax malformed after "
1921 (long) (p1 - buffer + 1));
1924 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1926 read_specs (new_filename, false, user_p);
1927 else if (verbose_flag)
1928 fnotice (stderr, "could not find specs file %s\n", p1);
1931 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1932 && (p1[sizeof "%rename" - 1] == ' '
1933 || p1[sizeof "%rename" - 1] == '\t'))
1936 struct spec_list *sl;
1937 struct spec_list *newsl;
1939 /* Get original name. */
1940 p1 += sizeof "%rename";
1941 while (*p1 == ' ' || *p1 == '\t')
1944 if (! ISALPHA ((unsigned char) *p1))
1945 fatal_error ("specs %%rename syntax malformed after "
1947 (long) (p1 - buffer));
1950 while (*p2 && !ISSPACE ((unsigned char) *p2))
1953 if (*p2 != ' ' && *p2 != '\t')
1954 fatal_error ("specs %%rename syntax malformed after "
1956 (long) (p2 - buffer));
1960 while (*p2 == ' ' || *p2 == '\t')
1963 if (! ISALPHA ((unsigned char) *p2))
1964 fatal_error ("specs %%rename syntax malformed after "
1966 (long) (p2 - buffer));
1968 /* Get new spec name. */
1970 while (*p3 && !ISSPACE ((unsigned char) *p3))
1974 fatal_error ("specs %%rename syntax malformed after "
1976 (long) (p3 - buffer));
1979 for (sl = specs; sl; sl = sl->next)
1980 if (name_len == sl->name_len && !strcmp (sl->name, p1))
1984 fatal_error ("specs %s spec was not found to be renamed", p1);
1986 if (strcmp (p1, p2) == 0)
1989 for (newsl = specs; newsl; newsl = newsl->next)
1990 if (strcmp (newsl->name, p2) == 0)
1991 fatal_error ("%s: attempt to rename spec %qs to "
1992 "already defined spec %qs",
1997 fnotice (stderr, "rename spec %s to %s\n", p1, p2);
1999 fnotice (stderr, "spec is '%s'\n\n", *(sl->ptr_spec));
2003 set_spec (p2, *(sl->ptr_spec), user_p);
2005 free (CONST_CAST (char *, *(sl->ptr_spec)));
2007 *(sl->ptr_spec) = "";
2012 fatal_error ("specs unknown %% command after %ld characters",
2013 (long) (p1 - buffer));
2016 /* Find the colon that should end the suffix. */
2018 while (*p1 && *p1 != ':' && *p1 != '\n')
2021 /* The colon shouldn't be missing. */
2023 fatal_error ("specs file malformed after %ld characters",
2024 (long) (p1 - buffer));
2026 /* Skip back over trailing whitespace. */
2028 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
2031 /* Copy the suffix to a string. */
2032 suffix = save_string (p, p2 - p);
2033 /* Find the next line. */
2034 p = skip_whitespace (p1 + 1);
2036 fatal_error ("specs file malformed after %ld characters",
2037 (long) (p - buffer));
2040 /* Find next blank line or end of string. */
2041 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
2044 /* Specs end at the blank line and do not include the newline. */
2045 spec = save_string (p, p1 - p);
2048 /* Delete backslash-newline sequences from the spec. */
2053 if (in[0] == '\\' && in[1] == '\n')
2055 else if (in[0] == '#')
2056 while (*in && *in != '\n')
2064 if (suffix[0] == '*')
2066 if (! strcmp (suffix, "*link_command"))
2067 link_command_spec = spec;
2069 set_spec (suffix + 1, spec, user_p);
2073 /* Add this pair to the vector. */
2075 = XRESIZEVEC (struct compiler, compilers, n_compilers + 2);
2077 compilers[n_compilers].suffix = suffix;
2078 compilers[n_compilers].spec = spec;
2080 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2084 link_command_spec = spec;
2087 if (link_command_spec == 0)
2088 fatal_error ("spec file has no spec for linking");
2091 /* Record the names of temporary files we tell compilers to write,
2092 and delete them at the end of the run. */
2094 /* This is the common prefix we use to make temp file names.
2095 It is chosen once for each run of this program.
2096 It is substituted into a spec by %g or %j.
2097 Thus, all temp file names contain this prefix.
2098 In practice, all temp file names start with this prefix.
2100 This prefix comes from the envvar TMPDIR if it is defined;
2101 otherwise, from the P_tmpdir macro if that is defined;
2102 otherwise, in /usr/tmp or /tmp;
2103 or finally the current directory if all else fails. */
2105 static const char *temp_filename;
2107 /* Length of the prefix. */
2109 static int temp_filename_length;
2111 /* Define the list of temporary files to delete. */
2116 struct temp_file *next;
2119 /* Queue of files to delete on success or failure of compilation. */
2120 static struct temp_file *always_delete_queue;
2121 /* Queue of files to delete on failure of compilation. */
2122 static struct temp_file *failure_delete_queue;
2124 /* Record FILENAME as a file to be deleted automatically.
2125 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2126 otherwise delete it in any case.
2127 FAIL_DELETE nonzero means delete it if a compilation step fails;
2128 otherwise delete it in any case. */
2131 record_temp_file (const char *filename, int always_delete, int fail_delete)
2133 char *const name = xstrdup (filename);
2137 struct temp_file *temp;
2138 for (temp = always_delete_queue; temp; temp = temp->next)
2139 if (! filename_cmp (name, temp->name))
2142 temp = XNEW (struct temp_file);
2143 temp->next = always_delete_queue;
2145 always_delete_queue = temp;
2152 struct temp_file *temp;
2153 for (temp = failure_delete_queue; temp; temp = temp->next)
2154 if (! filename_cmp (name, temp->name))
2160 temp = XNEW (struct temp_file);
2161 temp->next = failure_delete_queue;
2163 failure_delete_queue = temp;
2169 /* Delete all the temporary files whose names we previously recorded. */
2171 #ifndef DELETE_IF_ORDINARY
2172 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2175 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2176 if (unlink (NAME) < 0) \
2178 perror_with_name (NAME); \
2183 delete_if_ordinary (const char *name)
2189 printf ("Delete %s? (y or n) ", name);
2193 while ((c = getchar ()) != '\n' && c != EOF)
2196 if (i == 'y' || i == 'Y')
2198 DELETE_IF_ORDINARY (name, st, verbose_flag);
2202 delete_temp_files (void)
2204 struct temp_file *temp;
2206 for (temp = always_delete_queue; temp; temp = temp->next)
2207 delete_if_ordinary (temp->name);
2208 always_delete_queue = 0;
2211 /* Delete all the files to be deleted on error. */
2214 delete_failure_queue (void)
2216 struct temp_file *temp;
2218 for (temp = failure_delete_queue; temp; temp = temp->next)
2219 delete_if_ordinary (temp->name);
2223 clear_failure_queue (void)
2225 failure_delete_queue = 0;
2228 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2230 If DO_MULTI is true iterate over the paths twice, first with multilib
2231 suffix then without, otherwise iterate over the paths once without
2232 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2233 to avoid visiting the same path twice, but we could do better. For
2234 instance, /usr/lib/../lib is considered different from /usr/lib.
2235 At least EXTRA_SPACE chars past the end of the path passed to
2236 CALLBACK are available for use by the callback.
2237 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2239 Returns the value returned by CALLBACK. */
2242 for_each_path (const struct path_prefix *paths,
2245 void *(*callback) (char *, void *),
2246 void *callback_info)
2248 struct prefix_list *pl;
2249 const char *multi_dir = NULL;
2250 const char *multi_os_dir = NULL;
2251 const char *multiarch_suffix = NULL;
2252 const char *multi_suffix;
2253 const char *just_multi_suffix;
2256 bool skip_multi_dir = false;
2257 bool skip_multi_os_dir = false;
2259 multi_suffix = machine_suffix;
2260 just_multi_suffix = just_machine_suffix;
2261 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0)
2263 multi_dir = concat (multilib_dir, dir_separator_str, NULL);
2264 multi_suffix = concat (multi_suffix, multi_dir, NULL);
2265 just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL);
2267 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0)
2268 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL);
2270 multiarch_suffix = concat (multiarch_dir, dir_separator_str, NULL);
2274 size_t multi_dir_len = 0;
2275 size_t multi_os_dir_len = 0;
2276 size_t multiarch_len = 0;
2278 size_t just_suffix_len;
2282 multi_dir_len = strlen (multi_dir);
2284 multi_os_dir_len = strlen (multi_os_dir);
2285 if (multiarch_suffix)
2286 multiarch_len = strlen (multiarch_suffix);
2287 suffix_len = strlen (multi_suffix);
2288 just_suffix_len = strlen (just_multi_suffix);
2292 len = paths->max_len + extra_space + 1;
2293 len += MAX (MAX (suffix_len, multi_os_dir_len), multiarch_len);
2294 path = XNEWVEC (char, len);
2297 for (pl = paths->plist; pl != 0; pl = pl->next)
2299 len = strlen (pl->prefix);
2300 memcpy (path, pl->prefix, len);
2302 /* Look first in MACHINE/VERSION subdirectory. */
2303 if (!skip_multi_dir)
2305 memcpy (path + len, multi_suffix, suffix_len + 1);
2306 ret = callback (path, callback_info);
2311 /* Some paths are tried with just the machine (ie. target)
2312 subdir. This is used for finding as, ld, etc. */
2314 && pl->require_machine_suffix == 2)
2316 memcpy (path + len, just_multi_suffix, just_suffix_len + 1);
2317 ret = callback (path, callback_info);
2322 /* Now try the multiarch path. */
2324 && !pl->require_machine_suffix && multiarch_dir)
2326 memcpy (path + len, multiarch_suffix, multiarch_len + 1);
2327 ret = callback (path, callback_info);
2332 /* Now try the base path. */
2333 if (!pl->require_machine_suffix
2334 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir))
2336 const char *this_multi;
2337 size_t this_multi_len;
2339 if (pl->os_multilib)
2341 this_multi = multi_os_dir;
2342 this_multi_len = multi_os_dir_len;
2346 this_multi = multi_dir;
2347 this_multi_len = multi_dir_len;
2351 memcpy (path + len, this_multi, this_multi_len + 1);
2355 ret = callback (path, callback_info);
2363 if (multi_dir == NULL && multi_os_dir == NULL)
2366 /* Run through the paths again, this time without multilibs.
2367 Don't repeat any we have already seen. */
2370 free (CONST_CAST (char *, multi_dir));
2372 free (CONST_CAST (char *, multi_suffix));
2373 multi_suffix = machine_suffix;
2374 free (CONST_CAST (char *, just_multi_suffix));
2375 just_multi_suffix = just_machine_suffix;
2378 skip_multi_dir = true;
2381 free (CONST_CAST (char *, multi_os_dir));
2382 multi_os_dir = NULL;
2385 skip_multi_os_dir = true;
2390 free (CONST_CAST (char *, multi_dir));
2391 free (CONST_CAST (char *, multi_suffix));
2392 free (CONST_CAST (char *, just_multi_suffix));
2395 free (CONST_CAST (char *, multi_os_dir));
2401 /* Callback for build_search_list. Adds path to obstack being built. */
2403 struct add_to_obstack_info {
2410 add_to_obstack (char *path, void *data)
2412 struct add_to_obstack_info *info = (struct add_to_obstack_info *) data;
2414 if (info->check_dir && !is_directory (path, false))
2417 if (!info->first_time)
2418 obstack_1grow (info->ob, PATH_SEPARATOR);
2420 obstack_grow (info->ob, path, strlen (path));
2422 info->first_time = false;
2426 /* Add or change the value of an environment variable, outputting the
2427 change to standard error if in verbose mode. */
2429 xputenv (const char *string)
2432 fnotice (stderr, "%s\n", string);
2433 putenv (CONST_CAST (char *, string));
2436 /* Build a list of search directories from PATHS.
2437 PREFIX is a string to prepend to the list.
2438 If CHECK_DIR_P is true we ensure the directory exists.
2439 If DO_MULTI is true, multilib paths are output first, then
2441 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2442 It is also used by the --print-search-dirs flag. */
2445 build_search_list (const struct path_prefix *paths, const char *prefix,
2446 bool check_dir, bool do_multi)
2448 struct add_to_obstack_info info;
2450 info.ob = &collect_obstack;
2451 info.check_dir = check_dir;
2452 info.first_time = true;
2454 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2455 obstack_1grow (&collect_obstack, '=');
2457 for_each_path (paths, do_multi, 0, add_to_obstack, &info);
2459 obstack_1grow (&collect_obstack, '\0');
2460 return XOBFINISH (&collect_obstack, char *);
2463 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2467 putenv_from_prefixes (const struct path_prefix *paths, const char *env_var,
2470 xputenv (build_search_list (paths, env_var, true, do_multi));
2473 /* Check whether NAME can be accessed in MODE. This is like access,
2474 except that it never considers directories to be executable. */
2477 access_check (const char *name, int mode)
2483 if (stat (name, &st) < 0
2484 || S_ISDIR (st.st_mode))
2488 return access (name, mode);
2491 /* Callback for find_a_file. Appends the file name to the directory
2492 path. If the resulting file exists in the right mode, return the
2493 full pathname to the file. */
2495 struct file_at_path_info {
2504 file_at_path (char *path, void *data)
2506 struct file_at_path_info *info = (struct file_at_path_info *) data;
2507 size_t len = strlen (path);
2509 memcpy (path + len, info->name, info->name_len);
2510 len += info->name_len;
2512 /* Some systems have a suffix for executable files.
2513 So try appending that first. */
2514 if (info->suffix_len)
2516 memcpy (path + len, info->suffix, info->suffix_len + 1);
2517 if (access_check (path, info->mode) == 0)
2522 if (access_check (path, info->mode) == 0)
2528 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2529 access to check permissions. If DO_MULTI is true, search multilib
2530 paths then non-multilib paths, otherwise do not search multilib paths.
2531 Return 0 if not found, otherwise return its name, allocated with malloc. */
2534 find_a_file (const struct path_prefix *pprefix, const char *name, int mode,
2537 struct file_at_path_info info;
2539 #ifdef DEFAULT_ASSEMBLER
2540 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2541 return xstrdup (DEFAULT_ASSEMBLER);
2544 #ifdef DEFAULT_LINKER
2545 if (! strcmp (name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2546 return xstrdup (DEFAULT_LINKER);
2549 /* Determine the filename to execute (special case for absolute paths). */
2551 if (IS_ABSOLUTE_PATH (name))
2553 if (access (name, mode) == 0)
2554 return xstrdup (name);
2560 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "";
2561 info.name_len = strlen (info.name);
2562 info.suffix_len = strlen (info.suffix);
2565 return (char*) for_each_path (pprefix, do_multi,
2566 info.name_len + info.suffix_len,
2567 file_at_path, &info);
2570 /* Ranking of prefixes in the sort list. -B prefixes are put before
2573 enum path_prefix_priority
2575 PREFIX_PRIORITY_B_OPT,
2576 PREFIX_PRIORITY_LAST
2579 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2580 order according to PRIORITY. Within each PRIORITY, new entries are
2583 If WARN is nonzero, we will warn if no file is found
2584 through this prefix. WARN should point to an int
2585 which will be set to 1 if this entry is used.
2587 COMPONENT is the value to be passed to update_path.
2589 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2590 the complete value of machine_suffix.
2591 2 means try both machine_suffix and just_machine_suffix. */
2594 add_prefix (struct path_prefix *pprefix, const char *prefix,
2595 const char *component, /* enum prefix_priority */ int priority,
2596 int require_machine_suffix, int os_multilib)
2598 struct prefix_list *pl, **prev;
2601 for (prev = &pprefix->plist;
2602 (*prev) != NULL && (*prev)->priority <= priority;
2603 prev = &(*prev)->next)
2606 /* Keep track of the longest prefix. */
2608 prefix = update_path (prefix, component);
2609 len = strlen (prefix);
2610 if (len > pprefix->max_len)
2611 pprefix->max_len = len;
2613 pl = XNEW (struct prefix_list);
2614 pl->prefix = prefix;
2615 pl->require_machine_suffix = require_machine_suffix;
2616 pl->priority = priority;
2617 pl->os_multilib = os_multilib;
2619 /* Insert after PREV. */
2624 /* Same as add_prefix, but prepending target_system_root to prefix. */
2625 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2627 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2628 const char *component,
2629 /* enum prefix_priority */ int priority,
2630 int require_machine_suffix, int os_multilib)
2632 if (!IS_ABSOLUTE_PATH (prefix))
2633 fatal_error ("system path %qs is not absolute", prefix);
2635 if (target_system_root)
2637 char *sysroot_no_trailing_dir_separator = xstrdup (target_system_root);
2638 size_t sysroot_len = strlen (target_system_root);
2641 && target_system_root[sysroot_len - 1] == DIR_SEPARATOR)
2642 sysroot_no_trailing_dir_separator[sysroot_len - 1] = '\0';
2644 if (target_sysroot_suffix)
2645 prefix = concat (sysroot_no_trailing_dir_separator,
2646 target_sysroot_suffix, prefix, NULL);
2648 prefix = concat (sysroot_no_trailing_dir_separator, prefix, NULL);
2650 free (sysroot_no_trailing_dir_separator);
2652 /* We have to override this because GCC's notion of sysroot
2653 moves along with GCC. */
2657 add_prefix (pprefix, prefix, component, priority,
2658 require_machine_suffix, os_multilib);
2661 /* Execute the command specified by the arguments on the current line of spec.
2662 When using pipes, this includes several piped-together commands
2663 with `|' between them.
2665 Return 0 if successful, -1 if failed. */
2671 int n_commands; /* # of command. */
2673 struct pex_obj *pex;
2676 const char *prog; /* program name. */
2677 const char **argv; /* vector of args. */
2681 struct command *commands; /* each command buffer with above info. */
2683 gcc_assert (!processing_spec_function);
2687 string = find_a_file (&exec_prefixes,
2688 argbuf[0], X_OK, false);
2691 insert_wrapper (wrapper_string);
2694 /* Count # of piped commands. */
2695 for (n_commands = 1, i = 0; argbuf.iterate (i, &arg); i++)
2696 if (strcmp (arg, "|") == 0)
2699 /* Get storage for each command. */
2700 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2702 /* Split argbuf into its separate piped processes,
2703 and record info about each one.
2704 Also search for the programs that are to be run. */
2706 argbuf.safe_push (0);
2708 commands[0].prog = argbuf[0]; /* first command. */
2709 commands[0].argv = argbuf.address ();
2711 if (!wrapper_string)
2713 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false);
2714 commands[0].argv[0] = (string) ? string : commands[0].argv[0];
2717 for (n_commands = 1, i = 0; argbuf.iterate (i, &arg); i++)
2718 if (arg && strcmp (arg, "|") == 0)
2719 { /* each command. */
2720 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2721 fatal_error ("-pipe not supported");
2723 argbuf[i] = 0; /* Termination of
2725 commands[n_commands].prog = argbuf[i + 1];
2726 commands[n_commands].argv
2727 = &(argbuf.address ())[i + 1];
2728 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2731 commands[n_commands].argv[0] = string;
2735 /* If -v, print what we are about to do, and maybe query. */
2739 /* For help listings, put a blank line between sub-processes. */
2740 if (print_help_list)
2741 fputc ('\n', stderr);
2743 /* Print each piped command as a separate line. */
2744 for (i = 0; i < n_commands; i++)
2746 const char *const *j;
2748 if (verbose_only_flag)
2750 for (j = commands[i].argv; *j; j++)
2753 for (p = *j; *p; ++p)
2754 if (!ISALNUM ((unsigned char) *p)
2755 && *p != '_' && *p != '/' && *p != '-' && *p != '.')
2759 fprintf (stderr, " \"");
2760 for (p = *j; *p; ++p)
2762 if (*p == '"' || *p == '\\' || *p == '$')
2763 fputc ('\\', stderr);
2766 fputc ('"', stderr);
2768 /* If it's empty, print "". */
2770 fprintf (stderr, " \"\"");
2772 fprintf (stderr, " %s", *j);
2776 for (j = commands[i].argv; *j; j++)
2777 /* If it's empty, print "". */
2779 fprintf (stderr, " \"\"");
2781 fprintf (stderr, " %s", *j);
2783 /* Print a pipe symbol after all but the last command. */
2784 if (i + 1 != n_commands)
2785 fprintf (stderr, " |");
2786 fprintf (stderr, "\n");
2789 if (verbose_only_flag != 0)
2791 /* verbose_only_flag should act as if the spec was
2792 executed, so increment execution_count before
2793 returning. This prevents spurious warnings about
2794 unused linker input files, etc. */
2799 fnotice (stderr, "\nGo ahead? (y or n) ");
2803 while (getchar () != '\n')
2806 if (i != 'y' && i != 'Y')
2811 #ifdef ENABLE_VALGRIND_CHECKING
2812 /* Run the each command through valgrind. To simplify prepending the
2813 path to valgrind and the option "-q" (for quiet operation unless
2814 something triggers), we allocate a separate argv array. */
2816 for (i = 0; i < n_commands; i++)
2822 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2825 argv = XALLOCAVEC (const char *, argc + 3);
2827 argv[0] = VALGRIND_PATH;
2829 for (j = 2; j < argc + 2; j++)
2830 argv[j] = commands[i].argv[j - 2];
2833 commands[i].argv = argv;
2834 commands[i].prog = argv[0];
2838 /* Run each piped subprocess. */
2840 pex = pex_init (PEX_USE_PIPES | ((report_times || report_times_to_file)
2841 ? PEX_RECORD_TIMES : 0),
2842 progname, temp_filename);
2844 fatal_error ("pex_init failed: %m");
2846 for (i = 0; i < n_commands; i++)
2850 const char *string = commands[i].argv[0];
2852 errmsg = pex_run (pex,
2853 ((i + 1 == n_commands ? PEX_LAST : 0)
2854 | (string == commands[i].prog ? PEX_SEARCH : 0)),
2855 string, CONST_CAST (char **, commands[i].argv),
2860 fatal_error (errmsg);
2864 pfatal_with_name (errmsg);
2868 if (i && string != commands[i].prog)
2869 free (CONST_CAST (char *, string));
2874 /* Wait for all the subprocesses to finish. */
2878 struct pex_time *times = NULL;
2881 statuses = (int *) alloca (n_commands * sizeof (int));
2882 if (!pex_get_status (pex, n_commands, statuses))
2883 fatal_error ("failed to get exit status: %m");
2885 if (report_times || report_times_to_file)
2887 times = (struct pex_time *) alloca (n_commands * sizeof (struct pex_time));
2888 if (!pex_get_times (pex, n_commands, times))
2889 fatal_error ("failed to get process times: %m");
2894 for (i = 0; i < n_commands; ++i)
2896 int status = statuses[i];
2898 if (WIFSIGNALED (status))
2901 /* SIGPIPE is a special case. It happens in -pipe mode
2902 when the compiler dies before the preprocessor is done,
2903 or the assembler dies before the compiler is done.
2904 There's generally been an error already, and this is
2905 just fallout. So don't generate another error unless
2906 we would otherwise have succeeded. */
2907 if (WTERMSIG (status) == SIGPIPE
2908 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2915 internal_error_no_backtrace ("%s (program %s)",
2916 strsignal (WTERMSIG (status)),
2919 else if (WIFEXITED (status)
2920 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2922 /* For ICEs in cc1, cc1obj, cc1plus see if it is
2923 reproducible or not. */
2926 && WEXITSTATUS (status) == ICE_EXIT_CODE
2928 && (p = strrchr (commands[0].argv[0], DIR_SEPARATOR))
2929 && ! strncmp (p + 1, "cc1", 3))
2930 try_generate_repro (commands[0].argv);
2931 if (WEXITSTATUS (status) > greatest_status)
2932 greatest_status = WEXITSTATUS (status);
2936 if (report_times || report_times_to_file)
2938 struct pex_time *pt = ×[i];
2941 ut = ((double) pt->user_seconds
2942 + (double) pt->user_microseconds / 1.0e6);
2943 st = ((double) pt->system_seconds
2944 + (double) pt->system_microseconds / 1.0e6);
2949 fnotice (stderr, "# %s %.2f %.2f\n",
2950 commands[i].prog, ut, st);
2952 if (report_times_to_file)
2955 const char *const *j;
2957 fprintf (report_times_to_file, "%g %g", ut, st);
2959 for (j = &commands[i].prog; *j; j = &commands[i].argv[++c])
2962 for (p = *j; *p; ++p)
2963 if (*p == '"' || *p == '\\' || *p == '$'
2969 fprintf (report_times_to_file, " \"");
2970 for (p = *j; *p; ++p)
2972 if (*p == '"' || *p == '\\' || *p == '$')
2973 fputc ('\\', report_times_to_file);
2974 fputc (*p, report_times_to_file);
2976 fputc ('"', report_times_to_file);
2979 fprintf (report_times_to_file, " %s", *j);
2982 fputc ('\n', report_times_to_file);
2988 if (commands[0].argv[0] != commands[0].prog)
2989 free (CONST_CAST (char *, commands[0].argv[0]));
2995 /* Find all the switches given to us
2996 and make a vector describing them.
2997 The elements of the vector are strings, one per switch given.
2998 If a switch uses following arguments, then the `part1' field
2999 is the switch itself and the `args' field
3000 is a null-terminated vector containing the following arguments.
3001 Bits in the `live_cond' field are:
3002 SWITCH_LIVE to indicate this switch is true in a conditional spec.
3003 SWITCH_FALSE to indicate this switch is overridden by a later switch.
3004 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
3005 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
3006 in all do_spec calls afterwards. Used for %<S from self specs.
3007 The `validated' field is nonzero if any spec has looked at this switch;
3008 if it remains zero at the end of the run, it must be meaningless. */
3010 #define SWITCH_LIVE (1 << 0)
3011 #define SWITCH_FALSE (1 << 1)
3012 #define SWITCH_IGNORE (1 << 2)
3013 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
3014 #define SWITCH_KEEP_FOR_GCC (1 << 4)
3020 unsigned int live_cond;
3026 static struct switchstr *switches;
3028 static int n_switches;
3030 static int n_switches_alloc;
3032 /* Set to zero if -fcompare-debug is disabled, positive if it's
3033 enabled and we're running the first compilation, negative if it's
3034 enabled and we're running the second compilation. For most of the
3035 time, it's in the range -1..1, but it can be temporarily set to 2
3036 or 3 to indicate that the -fcompare-debug flags didn't come from
3037 the command-line, but rather from the GCC_COMPARE_DEBUG environment
3038 variable, until a synthesized -fcompare-debug flag is added to the
3042 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
3043 int compare_debug_second;
3045 /* Set to the flags that should be passed to the second compilation in
3046 a -fcompare-debug compilation. */
3047 const char *compare_debug_opt;
3049 static struct switchstr *switches_debug_check[2];
3051 static int n_switches_debug_check[2];
3053 static int n_switches_alloc_debug_check[2];
3055 static char *debug_check_temp_file[2];
3057 /* Language is one of three things:
3059 1) The name of a real programming language.
3060 2) NULL, indicating that no one has figured out
3062 3) '*', indicating that the file should be passed
3067 const char *language;
3068 struct compiler *incompiler;
3073 /* Also a vector of input files specified. */
3075 static struct infile *infiles;
3079 static int n_infiles_alloc;
3081 /* True if multiple input files are being compiled to a single
3084 static bool combine_inputs;
3086 /* This counts the number of libraries added by lang_specific_driver, so that
3087 we can tell if there were any user supplied any files or libraries. */
3089 static int added_libraries;
3091 /* And a vector of corresponding output files is made up later. */
3093 const char **outfiles;
3095 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3097 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
3098 is true if we should look for an executable suffix. DO_OBJ
3099 is true if we should look for an object suffix. */
3102 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
3103 int do_obj ATTRIBUTE_UNUSED)
3105 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3113 len = strlen (name);
3115 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3116 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
3117 if (do_obj && len > 2
3118 && name[len - 2] == '.'
3119 && name[len - 1] == 'o')
3121 obstack_grow (&obstack, name, len - 2);
3122 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
3123 name = XOBFINISH (&obstack, const char *);
3127 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3128 /* If there is no filetype, make it the executable suffix (which includes
3129 the "."). But don't get confused if we have just "-o". */
3130 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
3133 for (i = len - 1; i >= 0; i--)
3134 if (IS_DIR_SEPARATOR (name[i]))
3137 for (i++; i < len; i++)
3141 obstack_grow (&obstack, name, len);
3142 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
3143 strlen (TARGET_EXECUTABLE_SUFFIX));
3144 name = XOBFINISH (&obstack, const char *);
3151 /* Display the command line switches accepted by gcc. */
3155 printf (_("Usage: %s [options] file...\n"), progname);
3156 fputs (_("Options:\n"), stdout);
3158 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
3159 fputs (_(" --help Display this information\n"), stdout);
3160 fputs (_(" --target-help Display target specific command line options\n"), stdout);
3161 fputs (_(" --help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumented}}[,...]\n"), stdout);
3162 fputs (_(" Display specific types of command line options\n"), stdout);
3164 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
3165 fputs (_(" --version Display compiler version information\n"), stdout);
3166 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
3167 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
3168 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
3169 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
3170 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
3171 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
3172 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
3174 -print-multiarch Display the target's normalized GNU triplet, used as\n\
3175 a component in the library path\n"), stdout);
3176 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
3178 -print-multi-lib Display the mapping between command line options and\n\
3179 multiple library search directories\n"), stdout);
3180 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
3181 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout);
3182 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout);
3183 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3184 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3185 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3186 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
3187 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
3188 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3189 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3190 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout);
3192 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
3193 prefixes to other gcc components\n"), stdout);
3194 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3195 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3196 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3197 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3199 --sysroot=<directory> Use <directory> as the root directory for headers\n\
3200 and libraries\n"), stdout);
3201 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3202 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3203 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3204 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3205 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3206 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3207 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3208 fputs (_(" -pie Create a position independent executable\n"), stdout);
3209 fputs (_(" -shared Create a shared library\n"), stdout);
3211 -x <language> Specify the language of the following input files\n\
3212 Permissible languages include: c c++ assembler none\n\
3213 'none' means revert to the default behavior of\n\
3214 guessing the language based on the file's extension\n\
3218 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3219 passed on to the various sub-processes invoked by %s. In order to pass\n\
3220 other options on to these processes the -W<letter> options must be used.\n\
3223 /* The rest of the options are displayed by invocations of the various
3228 add_preprocessor_option (const char *option, int len)
3230 preprocessor_options.safe_push (save_string (option, len));
3234 add_assembler_option (const char *option, int len)
3236 assembler_options.safe_push (save_string (option, len));
3240 add_linker_option (const char *option, int len)
3242 linker_options.safe_push (save_string (option, len));
3245 /* Allocate space for an input file in infiles. */
3250 if (n_infiles_alloc == 0)
3252 n_infiles_alloc = 16;
3253 infiles = XNEWVEC (struct infile, n_infiles_alloc);
3255 else if (n_infiles_alloc == n_infiles)
3257 n_infiles_alloc *= 2;
3258 infiles = XRESIZEVEC (struct infile, infiles, n_infiles_alloc);
3262 /* Store an input file with the given NAME and LANGUAGE in
3266 add_infile (const char *name, const char *language)
3269 infiles[n_infiles].name = name;
3270 infiles[n_infiles++].language = language;
3273 /* Allocate space for a switch in switches. */
3278 if (n_switches_alloc == 0)
3280 n_switches_alloc = 16;
3281 switches = XNEWVEC (struct switchstr, n_switches_alloc);
3283 else if (n_switches_alloc == n_switches)
3285 n_switches_alloc *= 2;
3286 switches = XRESIZEVEC (struct switchstr, switches, n_switches_alloc);
3290 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3291 as validated if VALIDATED and KNOWN if it is an internal switch. */
3294 save_switch (const char *opt, size_t n_args, const char *const *args,
3295 bool validated, bool known)
3298 switches[n_switches].part1 = opt + 1;
3300 switches[n_switches].args = 0;
3303 switches[n_switches].args = XNEWVEC (const char *, n_args + 1);
3304 memcpy (switches[n_switches].args, args, n_args * sizeof (const char *));
3305 switches[n_switches].args[n_args] = NULL;
3308 switches[n_switches].live_cond = 0;
3309 switches[n_switches].validated = validated;
3310 switches[n_switches].known = known;
3311 switches[n_switches].ordering = 0;
3315 /* Handle an option DECODED that is unknown to the option-processing
3319 driver_unknown_option_callback (const struct cl_decoded_option *decoded)
3321 const char *opt = decoded->arg;
3322 if (opt[1] == 'W' && opt[2] == 'n' && opt[3] == 'o' && opt[4] == '-'
3323 && !(decoded->errors & CL_ERR_NEGATIVE))
3325 /* Leave unknown -Wno-* options for the compiler proper, to be
3326 diagnosed only if there are warnings. */
3327 save_switch (decoded->canonical_option[0],
3328 decoded->canonical_option_num_elements - 1,
3329 &decoded->canonical_option[1], false, true);
3332 if (decoded->opt_index == OPT_SPECIAL_unknown)
3334 /* Give it a chance to define it a a spec file. */
3335 save_switch (decoded->canonical_option[0],
3336 decoded->canonical_option_num_elements - 1,
3337 &decoded->canonical_option[1], false, false);
3344 /* Handle an option DECODED that is not marked as CL_DRIVER.
3345 LANG_MASK will always be CL_DRIVER. */
3348 driver_wrong_lang_callback (const struct cl_decoded_option *decoded,
3349 unsigned int lang_mask ATTRIBUTE_UNUSED)
3351 /* At this point, non-driver options are accepted (and expected to
3352 be passed down by specs) unless marked to be rejected by the
3353 driver. Options to be rejected by the driver but accepted by the
3354 compilers proper are treated just like completely unknown
3356 const struct cl_option *option = &cl_options[decoded->opt_index];
3358 if (option->cl_reject_driver)
3359 error ("unrecognized command line option %qs",
3360 decoded->orig_option_with_args_text);
3362 save_switch (decoded->canonical_option[0],
3363 decoded->canonical_option_num_elements - 1,
3364 &decoded->canonical_option[1], false, true);
3367 static const char *spec_lang = 0;
3368 static int last_language_n_infiles;
3370 /* Parse -foffload option argument. */
3373 handle_foffload_option (const char *arg)
3375 const char *c, *cur, *n, *next, *end;
3378 /* If option argument starts with '-' then no target is specified and we
3379 do not need to parse it. */
3383 end = strchr (arg, '=');
3385 end = strchr (arg, '\0');
3390 next = strchr (cur, ',');
3393 next = (next > end) ? end : next;
3395 target = XNEWVEC (char, next - cur + 1);
3396 memcpy (target, cur, next - cur);
3397 target[next - cur] = '\0';
3399 /* If 'disable' is passed to the option, stop parsing the option and clean
3400 the list of offload targets. */
3401 if (strcmp (target, "disable") == 0)
3403 free (offload_targets);
3404 offload_targets = xstrdup ("");
3408 /* Check that GCC is configured to support the offload target. */
3409 c = OFFLOAD_TARGETS;
3412 n = strchr (c, ',');
3414 n = strchr (c, '\0');
3416 if (next - cur == n - c && strncmp (target, c, n - c) == 0)
3419 c = *n ? n + 1 : NULL;
3423 fatal_error ("GCC is not configured to support %s as offload target",
3426 if (!offload_targets)
3428 offload_targets = target;
3433 /* Check that the target hasn't already presented in the list. */
3434 c = offload_targets;
3437 n = strchr (c, ':');
3439 n = strchr (c, '\0');
3441 if (next - cur == n - c && strncmp (c, target, n - c) == 0)
3448 /* If duplicate is not found, append the target to the list. */
3451 size_t offload_targets_len = strlen (offload_targets);
3453 = XRESIZEVEC (char, offload_targets,
3454 offload_targets_len + next - cur + 2);
3455 if (offload_targets_len)
3456 offload_targets[offload_targets_len++] = ':';
3457 memcpy (offload_targets + offload_targets_len, target, next - cur);
3462 XDELETEVEC (target);
3466 /* Handle a driver option; arguments and return value as for
3470 driver_handle_option (struct gcc_options *opts,
3471 struct gcc_options *opts_set,
3472 const struct cl_decoded_option *decoded,
3473 unsigned int lang_mask ATTRIBUTE_UNUSED, int kind,
3475 const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED,
3476 diagnostic_context *dc)
3478 size_t opt_index = decoded->opt_index;
3479 const char *arg = decoded->arg;
3480 const char *compare_debug_replacement_opt;
3481 int value = decoded->value;
3482 bool validated = false;
3483 bool do_save = true;
3485 gcc_assert (opts == &global_options);
3486 gcc_assert (opts_set == &global_options_set);
3487 gcc_assert (kind == DK_UNSPECIFIED);
3488 gcc_assert (loc == UNKNOWN_LOCATION);
3489 gcc_assert (dc == global_dc);
3495 struct spec_list *sl;
3497 for (sl = specs; sl; sl = sl->next)
3498 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3499 if (link_command_spec)
3500 printf ("*link_command:\n%s\n\n", link_command_spec);
3504 case OPT_dumpversion:
3505 printf ("%s\n", spec_version);
3508 case OPT_dumpmachine:
3509 printf ("%s\n", spec_machine);
3515 /* CPP driver cannot obtain switch from cc1_options. */
3517 add_preprocessor_option ("--version", strlen ("--version"));
3518 add_assembler_option ("--version", strlen ("--version"));
3519 add_linker_option ("--version", strlen ("--version"));
3523 print_help_list = 1;
3525 /* CPP driver cannot obtain switch from cc1_options. */
3527 add_preprocessor_option ("--help", 6);
3528 add_assembler_option ("--help", 6);
3529 add_linker_option ("--help", 6);
3533 print_subprocess_help = 2;
3536 case OPT__target_help:
3537 print_subprocess_help = 1;
3539 /* CPP driver cannot obtain switch from cc1_options. */
3541 add_preprocessor_option ("--target-help", 13);
3542 add_assembler_option ("--target-help", 13);
3543 add_linker_option ("--target-help", 13);
3546 case OPT__no_sysroot_suffix:
3547 case OPT_pass_exit_codes:
3548 case OPT_print_search_dirs:
3549 case OPT_print_file_name_:
3550 case OPT_print_prog_name_:
3551 case OPT_print_multi_lib:
3552 case OPT_print_multi_directory:
3553 case OPT_print_sysroot:
3554 case OPT_print_multi_os_directory:
3555 case OPT_print_multiarch:
3556 case OPT_print_sysroot_headers_suffix:
3559 /* These options set the variables specified in common.opt
3560 automatically, and do not need to be saved for spec
3565 case OPT_print_libgcc_file_name:
3566 print_file_name = "libgcc.a";
3570 case OPT_fuse_ld_bfd:
3574 case OPT_fuse_ld_gold:
3578 case OPT_fcompare_debug_second:
3579 compare_debug_second = 1;
3582 case OPT_fcompare_debug:
3586 compare_debug_replacement_opt = "-fcompare-debug=";
3588 goto compare_debug_with_arg;
3591 compare_debug_replacement_opt = "-fcompare-debug=-gtoggle";
3593 goto compare_debug_with_arg;
3600 case OPT_fcompare_debug_:
3601 compare_debug_replacement_opt = decoded->canonical_option[0];
3602 compare_debug_with_arg:
3603 gcc_assert (decoded->canonical_option_num_elements == 1);
3604 gcc_assert (arg != NULL);
3609 if (compare_debug < 0)
3610 compare_debug_opt = NULL;
3612 compare_debug_opt = arg;
3613 save_switch (compare_debug_replacement_opt, 0, NULL, validated, true);
3616 case OPT_fdiagnostics_color_:
3617 diagnostic_color_init (dc, value);
3623 /* Pass the rest of this option to the assembler. */
3625 /* Split the argument at commas. */
3627 for (j = 0; arg[j]; j++)
3630 add_assembler_option (arg + prev, j - prev);
3634 /* Record the part after the last comma. */
3635 add_assembler_option (arg + prev, j - prev);
3643 /* Pass the rest of this option to the preprocessor. */
3645 /* Split the argument at commas. */
3647 for (j = 0; arg[j]; j++)
3650 add_preprocessor_option (arg + prev, j - prev);
3654 /* Record the part after the last comma. */
3655 add_preprocessor_option (arg + prev, j - prev);
3663 /* Split the argument at commas. */
3665 for (j = 0; arg[j]; j++)
3668 add_infile (save_string (arg + prev, j - prev), "*");
3671 /* Record the part after the last comma. */
3672 add_infile (arg + prev, "*");
3678 add_infile (arg, "*");
3682 case OPT_Xpreprocessor:
3683 add_preprocessor_option (arg, strlen (arg));
3687 case OPT_Xassembler:
3688 add_assembler_option (arg, strlen (arg));
3693 /* POSIX allows separation of -l and the lib arg; canonicalize
3694 by concatenating -l with its arg */
3695 add_infile (concat ("-l", arg, NULL), "*");
3700 /* Similarly, canonicalize -L for linkers that may not accept
3701 separate arguments. */
3702 save_switch (concat ("-L", arg, NULL), 0, NULL, validated, true);
3707 save_switch (concat ("-F", arg, NULL), 0, NULL, validated, true);
3710 case OPT_save_temps:
3711 save_temps_flag = SAVE_TEMPS_CWD;
3715 case OPT_save_temps_:
3716 if (strcmp (arg, "cwd") == 0)
3717 save_temps_flag = SAVE_TEMPS_CWD;
3718 else if (strcmp (arg, "obj") == 0
3719 || strcmp (arg, "object") == 0)
3720 save_temps_flag = SAVE_TEMPS_OBJ;
3722 fatal_error ("%qs is an unknown -save-temps option",
3723 decoded->orig_option_with_args_text);
3726 case OPT_no_canonical_prefixes:
3727 /* Already handled as a special case, so ignored here. */
3733 /* These options set the variables specified in common.opt
3734 automatically, but do need to be saved for spec
3740 struct user_specs *user = XNEW (struct user_specs);
3742 user->next = (struct user_specs *) 0;
3743 user->filename = arg;
3744 if (user_specs_tail)
3745 user_specs_tail->next = user;
3747 user_specs_head = user;
3748 user_specs_tail = user;
3754 target_system_root = arg;
3755 target_system_root_changed = 1;
3760 if (report_times_to_file)
3761 fclose (report_times_to_file);
3762 report_times_to_file = fopen (arg, "a");
3768 This is similar to -v except that there is no execution
3769 of the commands and the echoed arguments are quoted. It
3770 is intended for use in shell scripts to capture the
3771 driver-generated command line. */
3772 verbose_only_flag++;
3779 size_t len = strlen (arg);
3781 /* Catch the case where the user has forgotten to append a
3782 directory separator to the path. Note, they may be using
3783 -B to add an executable name prefix, eg "i386-elf-", in
3784 order to distinguish between multiple installations of
3785 GCC in the same directory. Hence we must check to see
3786 if appending a directory separator actually makes a
3787 valid directory name. */
3788 if (!IS_DIR_SEPARATOR (arg[len - 1])
3789 && is_directory (arg, false))
3791 char *tmp = XNEWVEC (char, len + 2);
3793 tmp[len] = DIR_SEPARATOR;
3798 add_prefix (&exec_prefixes, arg, NULL,
3799 PREFIX_PRIORITY_B_OPT, 0, 0);
3800 add_prefix (&startfile_prefixes, arg, NULL,
3801 PREFIX_PRIORITY_B_OPT, 0, 0);
3802 add_prefix (&include_prefixes, arg, NULL,
3803 PREFIX_PRIORITY_B_OPT, 0, 0);
3810 if (!strcmp (spec_lang, "none"))
3811 /* Suppress the warning if -xnone comes after the last input
3812 file, because alternate command interfaces like g++ might
3813 find it useful to place -xnone after each input file. */
3816 last_language_n_infiles = n_infiles;
3822 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3823 arg = convert_filename (arg, ! have_c, 0);
3826 /* Save the output name in case -save-temps=obj was used. */
3827 save_temps_prefix = xstrdup (arg);
3828 /* On some systems, ld cannot handle "-o" without a space. So
3829 split the option from its argument. */
3830 save_switch ("-o", 1, &arg, validated, true);
3833 case OPT_static_libgcc:
3834 case OPT_shared_libgcc:
3835 case OPT_static_libgfortran:
3836 case OPT_static_libstdc__:
3837 /* These are always valid, since gcc.c itself understands the
3838 first two, gfortranspec.c understands -static-libgfortran and
3839 g++spec.c understands -static-libstdc++ */
3848 handle_foffload_option (arg);
3852 /* Various driver options need no special processing at this
3853 point, having been handled in a prescan above or being
3854 handled by specs. */
3859 save_switch (decoded->canonical_option[0],
3860 decoded->canonical_option_num_elements - 1,
3861 &decoded->canonical_option[1], validated, true);
3865 /* Put the driver's standard set of option handlers in *HANDLERS. */
3868 set_option_handlers (struct cl_option_handlers *handlers)
3870 handlers->unknown_option_callback = driver_unknown_option_callback;
3871 handlers->wrong_lang_callback = driver_wrong_lang_callback;
3872 handlers->num_handlers = 3;
3873 handlers->handlers[0].handler = driver_handle_option;
3874 handlers->handlers[0].mask = CL_DRIVER;
3875 handlers->handlers[1].handler = common_handle_option;
3876 handlers->handlers[1].mask = CL_COMMON;
3877 handlers->handlers[2].handler = target_handle_option;
3878 handlers->handlers[2].mask = CL_TARGET;
3881 /* Create the vector `switches' and its contents.
3882 Store its length in `n_switches'. */
3885 process_command (unsigned int decoded_options_count,
3886 struct cl_decoded_option *decoded_options)
3890 char *tooldir_prefix, *tooldir_prefix2;
3891 char *(*get_relative_prefix) (const char *, const char *,
3892 const char *) = NULL;
3893 struct cl_option_handlers handlers;
3896 gcc_exec_prefix = getenv ("GCC_EXEC_PREFIX");
3900 added_libraries = 0;
3902 /* Figure compiler version from version string. */
3904 compiler_version = temp1 = xstrdup (version_string);
3906 for (; *temp1; ++temp1)
3915 /* Handle any -no-canonical-prefixes flag early, to assign the function
3916 that builds relative prefixes. This function creates default search
3917 paths that are needed later in normal option handling. */
3919 for (j = 1; j < decoded_options_count; j++)
3921 if (decoded_options[j].opt_index == OPT_no_canonical_prefixes)
3923 get_relative_prefix = make_relative_prefix_ignore_links;
3927 if (! get_relative_prefix)
3928 get_relative_prefix = make_relative_prefix;
3930 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3931 see if we can create it from the pathname specified in
3932 decoded_options[0].arg. */
3934 gcc_libexec_prefix = standard_libexec_prefix;
3936 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3937 if (!gcc_exec_prefix)
3939 gcc_exec_prefix = get_relative_prefix (decoded_options[0].arg,
3940 standard_bindir_prefix,
3941 standard_exec_prefix);
3942 gcc_libexec_prefix = get_relative_prefix (decoded_options[0].arg,
3943 standard_bindir_prefix,
3944 standard_libexec_prefix);
3945 if (gcc_exec_prefix)
3946 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3950 /* make_relative_prefix requires a program name, but
3951 GCC_EXEC_PREFIX is typically a directory name with a trailing
3952 / (which is ignored by make_relative_prefix), so append a
3954 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL);
3955 gcc_libexec_prefix = get_relative_prefix (tmp_prefix,
3956 standard_exec_prefix,
3957 standard_libexec_prefix);
3959 /* The path is unrelocated, so fallback to the original setting. */
3960 if (!gcc_libexec_prefix)
3961 gcc_libexec_prefix = standard_libexec_prefix;
3967 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3968 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3969 or an automatically created GCC_EXEC_PREFIX from
3970 decoded_options[0].arg. */
3972 /* Do language-specific adjustment/addition of flags. */
3973 lang_specific_driver (&decoded_options, &decoded_options_count,
3976 if (gcc_exec_prefix)
3978 int len = strlen (gcc_exec_prefix);
3980 if (len > (int) sizeof ("/lib/gcc/") - 1
3981 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3983 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3984 if (IS_DIR_SEPARATOR (*temp)
3985 && filename_ncmp (temp + 1, "lib", 3) == 0
3986 && IS_DIR_SEPARATOR (temp[4])
3987 && filename_ncmp (temp + 5, "gcc", 3) == 0)
3988 len -= sizeof ("/lib/gcc/") - 1;
3991 set_std_prefix (gcc_exec_prefix, len);
3992 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3993 PREFIX_PRIORITY_LAST, 0, 0);
3994 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3995 PREFIX_PRIORITY_LAST, 0, 0);
3998 /* COMPILER_PATH and LIBRARY_PATH have values
3999 that are lists of directory names with colons. */
4001 temp = getenv ("COMPILER_PATH");
4004 const char *startp, *endp;
4005 char *nstore = (char *) alloca (strlen (temp) + 3);
4007 startp = endp = temp;
4010 if (*endp == PATH_SEPARATOR || *endp == 0)
4012 strncpy (nstore, startp, endp - startp);
4014 strcpy (nstore, concat (".", dir_separator_str, NULL));
4015 else if (!IS_DIR_SEPARATOR (endp[-1]))
4017 nstore[endp - startp] = DIR_SEPARATOR;
4018 nstore[endp - startp + 1] = 0;
4021 nstore[endp - startp] = 0;
4022 add_prefix (&exec_prefixes, nstore, 0,
4023 PREFIX_PRIORITY_LAST, 0, 0);
4024 add_prefix (&include_prefixes, nstore, 0,
4025 PREFIX_PRIORITY_LAST, 0, 0);
4028 endp = startp = endp + 1;
4035 temp = getenv (LIBRARY_PATH_ENV);
4036 if (temp && *cross_compile == '0')
4038 const char *startp, *endp;
4039 char *nstore = (char *) alloca (strlen (temp) + 3);
4041 startp = endp = temp;
4044 if (*endp == PATH_SEPARATOR || *endp == 0)
4046 strncpy (nstore, startp, endp - startp);
4048 strcpy (nstore, concat (".", dir_separator_str, NULL));
4049 else if (!IS_DIR_SEPARATOR (endp[-1]))
4051 nstore[endp - startp] = DIR_SEPARATOR;
4052 nstore[endp - startp + 1] = 0;
4055 nstore[endp - startp] = 0;
4056 add_prefix (&startfile_prefixes, nstore, NULL,
4057 PREFIX_PRIORITY_LAST, 0, 1);
4060 endp = startp = endp + 1;
4067 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
4068 temp = getenv ("LPATH");
4069 if (temp && *cross_compile == '0')
4071 const char *startp, *endp;
4072 char *nstore = (char *) alloca (strlen (temp) + 3);
4074 startp = endp = temp;
4077 if (*endp == PATH_SEPARATOR || *endp == 0)
4079 strncpy (nstore, startp, endp - startp);
4081 strcpy (nstore, concat (".", dir_separator_str, NULL));
4082 else if (!IS_DIR_SEPARATOR (endp[-1]))
4084 nstore[endp - startp] = DIR_SEPARATOR;
4085 nstore[endp - startp + 1] = 0;
4088 nstore[endp - startp] = 0;
4089 add_prefix (&startfile_prefixes, nstore, NULL,
4090 PREFIX_PRIORITY_LAST, 0, 1);
4093 endp = startp = endp + 1;
4100 /* Process the options and store input files and switches in their
4103 last_language_n_infiles = -1;
4105 set_option_handlers (&handlers);
4107 for (j = 1; j < decoded_options_count; j++)
4109 switch (decoded_options[j].opt_index)
4121 for (j = 1; j < decoded_options_count; j++)
4123 if (decoded_options[j].opt_index == OPT_SPECIAL_input_file)
4125 const char *arg = decoded_options[j].arg;
4126 const char *p = strrchr (arg, '@');
4130 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4131 arg = convert_filename (arg, 0, access (arg, F_OK));
4133 /* For LTO static archive support we handle input file
4134 specifications that are composed of a filename and
4135 an offset like FNAME@OFFSET. */
4138 && sscanf (p, "@%li%n", &offset, &consumed) >= 1
4139 && strlen (p) == (unsigned int)consumed)
4141 fname = (char *)xmalloc (p - arg + 1);
4142 memcpy (fname, arg, p - arg);
4143 fname[p - arg] = '\0';
4144 /* Only accept non-stdin and existing FNAME parts, otherwise
4145 try with the full name. */
4146 if (strcmp (fname, "-") == 0 || access (fname, F_OK) < 0)
4149 fname = xstrdup (arg);
4153 fname = xstrdup (arg);
4155 if (strcmp (fname, "-") != 0 && access (fname, F_OK) < 0)
4156 perror_with_name (fname);
4158 add_infile (arg, spec_lang);
4164 read_cmdline_option (&global_options, &global_options_set,
4165 decoded_options + j, UNKNOWN_LOCATION,
4166 CL_DRIVER, &handlers, global_dc);
4170 && strcmp (output_file, "-") != 0
4171 && strcmp (output_file, HOST_BIT_BUCKET) != 0)
4174 for (i = 0; i < n_infiles; i++)
4175 if ((!infiles[i].language || infiles[i].language[0] != '*')
4176 && canonical_filename_eq (infiles[i].name, output_file))
4177 fatal_error ("input file %qs is the same as output file",
4181 /* If -save-temps=obj and -o name, create the prefix to use for %b.
4182 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
4183 if (save_temps_flag == SAVE_TEMPS_OBJ && save_temps_prefix != NULL)
4185 save_temps_length = strlen (save_temps_prefix);
4186 temp = strrchr (lbasename (save_temps_prefix), '.');
4189 save_temps_length -= strlen (temp);
4190 save_temps_prefix[save_temps_length] = '\0';
4194 else if (save_temps_prefix != NULL)
4196 free (save_temps_prefix);
4197 save_temps_prefix = NULL;
4200 if (save_temps_flag && use_pipes)
4202 /* -save-temps overrides -pipe, so that temp files are produced */
4203 if (save_temps_flag)
4204 warning (0, "-pipe ignored because -save-temps specified");
4210 const char *gcd = getenv ("GCC_COMPARE_DEBUG");
4212 if (gcd && gcd[0] == '-')
4215 compare_debug_opt = gcd;
4217 else if (gcd && *gcd && strcmp (gcd, "0"))
4220 compare_debug_opt = "-gtoggle";
4223 else if (compare_debug < 0)
4226 gcc_assert (!compare_debug_opt);
4229 /* Set up the search paths. We add directories that we expect to
4230 contain GNU Toolchain components before directories specified by
4231 the machine description so that we will find GNU components (like
4232 the GNU assembler) before those of the host system. */
4234 /* If we don't know where the toolchain has been installed, use the
4235 configured-in locations. */
4236 if (!gcc_exec_prefix)
4239 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
4240 PREFIX_PRIORITY_LAST, 1, 0);
4241 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
4242 PREFIX_PRIORITY_LAST, 2, 0);
4243 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
4244 PREFIX_PRIORITY_LAST, 2, 0);
4246 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
4247 PREFIX_PRIORITY_LAST, 1, 0);
4250 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix));
4251 tooldir_prefix2 = concat (tooldir_base_prefix, spec_host_machine,
4252 dir_separator_str, NULL);
4254 /* Look for tools relative to the location from which the driver is
4255 running, or, if that is not available, the configured prefix. */
4257 = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
4258 spec_host_machine, dir_separator_str, spec_version,
4259 accel_dir_suffix, dir_separator_str, tooldir_prefix2, NULL);
4260 free (tooldir_prefix2);
4262 add_prefix (&exec_prefixes,
4263 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
4264 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0);
4265 add_prefix (&startfile_prefixes,
4266 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
4267 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1);
4268 free (tooldir_prefix);
4270 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
4271 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
4272 then consider it to relocate with the rest of the GCC installation
4273 if GCC_EXEC_PREFIX is set.
4274 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
4275 if (target_system_root && !target_system_root_changed && gcc_exec_prefix)
4277 char *tmp_prefix = get_relative_prefix (decoded_options[0].arg,
4278 standard_bindir_prefix,
4279 target_system_root);
4280 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
4282 target_system_root = tmp_prefix;
4283 target_system_root_changed = 1;
4288 /* More prefixes are enabled in main, after we read the specs file
4289 and determine whether this is cross-compilation or not. */
4291 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4292 warning (0, "%<-x %s%> after last input file has no effect", spec_lang);
4294 /* Synthesize -fcompare-debug flag from the GCC_COMPARE_DEBUG
4295 environment variable. */
4296 if (compare_debug == 2 || compare_debug == 3)
4298 const char *opt = concat ("-fcompare-debug=", compare_debug_opt, NULL);
4299 save_switch (opt, 0, NULL, false, true);
4303 /* Ensure we only invoke each subprocess once. */
4304 if (print_subprocess_help || print_help_list || print_version)
4308 /* Create a dummy input file, so that we can pass
4309 the help option on to the various sub-processes. */
4310 add_infile ("help-dummy", "c");
4314 switches[n_switches].part1 = 0;
4316 infiles[n_infiles].name = 0;
4319 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4320 and place that in the environment. */
4323 set_collect_gcc_options (void)
4328 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4330 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4331 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4334 for (i = 0; (int) i < n_switches; i++)
4336 const char *const *args;
4339 obstack_grow (&collect_obstack, " ", 1);
4343 /* Ignore elided switches. */
4344 if ((switches[i].live_cond
4345 & (SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC))
4349 obstack_grow (&collect_obstack, "'-", 2);
4350 q = switches[i].part1;
4351 while ((p = strchr (q, '\'')))
4353 obstack_grow (&collect_obstack, q, p - q);
4354 obstack_grow (&collect_obstack, "'\\''", 4);
4357 obstack_grow (&collect_obstack, q, strlen (q));
4358 obstack_grow (&collect_obstack, "'", 1);
4360 for (args = switches[i].args; args && *args; args++)
4362 obstack_grow (&collect_obstack, " '", 2);
4364 while ((p = strchr (q, '\'')))
4366 obstack_grow (&collect_obstack, q, p - q);
4367 obstack_grow (&collect_obstack, "'\\''", 4);
4370 obstack_grow (&collect_obstack, q, strlen (q));
4371 obstack_grow (&collect_obstack, "'", 1);
4374 obstack_grow (&collect_obstack, "\0", 1);
4375 xputenv (XOBFINISH (&collect_obstack, char *));
4378 /* Process a spec string, accumulating and running commands. */
4380 /* These variables describe the input file name.
4381 input_file_number is the index on outfiles of this file,
4382 so that the output file name can be stored for later use by %o.
4383 input_basename is the start of the part of the input file
4384 sans all directory names, and basename_length is the number
4385 of characters starting there excluding the suffix .c or whatever. */
4387 static const char *gcc_input_filename;
4388 static int input_file_number;
4389 size_t input_filename_length;
4390 static int basename_length;
4391 static int suffixed_basename_length;
4392 static const char *input_basename;
4393 static const char *input_suffix;
4394 #ifndef HOST_LACKS_INODE_NUMBERS
4395 static struct stat input_stat;
4397 static int input_stat_set;
4399 /* The compiler used to process the current input file. */
4400 static struct compiler *input_file_compiler;
4402 /* These are variables used within do_spec and do_spec_1. */
4404 /* Nonzero if an arg has been started and not yet terminated
4405 (with space, tab or newline). */
4406 static int arg_going;
4408 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4409 is a temporary file name. */
4410 static int delete_this_arg;
4412 /* Nonzero means %w has been seen; the next arg to be terminated
4413 is the output file name of this compilation. */
4414 static int this_is_output_file;
4416 /* Nonzero means %s has been seen; the next arg to be terminated
4417 is the name of a library file and we should try the standard
4418 search dirs for it. */
4419 static int this_is_library_file;
4421 /* Nonzero means %T has been seen; the next arg to be terminated
4422 is the name of a linker script and we should try all of the
4423 standard search dirs for it. If it is found insert a --script
4424 command line switch and then substitute the full path in place,
4425 otherwise generate an error message. */
4426 static int this_is_linker_script;
4428 /* Nonzero means that the input of this command is coming from a pipe. */
4429 static int input_from_pipe;
4431 /* Nonnull means substitute this for any suffix when outputting a switches
4433 static const char *suffix_subst;
4435 /* If there is an argument being accumulated, terminate it and store it. */
4438 end_going_arg (void)
4444 obstack_1grow (&obstack, 0);
4445 string = XOBFINISH (&obstack, const char *);
4446 if (this_is_library_file)
4447 string = find_file (string);
4448 if (this_is_linker_script)
4450 char * full_script_path = find_a_file (&startfile_prefixes, string, R_OK, true);
4452 if (full_script_path == NULL)
4454 error ("unable to locate default linker script %qs in the library search paths", string);
4455 /* Script was not found on search path. */
4458 store_arg ("--script", false, false);
4459 string = full_script_path;
4461 store_arg (string, delete_this_arg, this_is_output_file);
4462 if (this_is_output_file)
4463 outfiles[input_file_number] = string;
4469 /* Parse the WRAPPER string which is a comma separated list of the command line
4470 and insert them into the beginning of argbuf. */
4473 insert_wrapper (const char *wrapper)
4477 char *buf = xstrdup (wrapper);
4479 unsigned int old_length = argbuf.length ();
4487 while ((p = strchr (p, ',')) != NULL);
4489 argbuf.safe_grow (old_length + n);
4490 memmove (argbuf.address () + n,
4492 old_length * sizeof (const_char_p));
4506 while ((p = strchr (p, ',')) != NULL);
4507 gcc_assert (i == n);
4510 /* Process the spec SPEC and run the commands specified therein.
4511 Returns 0 if the spec is successfully processed; -1 if failed. */
4514 do_spec (const char *spec)
4518 value = do_spec_2 (spec);
4520 /* Force out any unfinished command.
4521 If -pipe, this forces out the last command if it ended in `|'. */
4524 if (argbuf.length () > 0
4525 && !strcmp (argbuf.last (), "|"))
4528 set_collect_gcc_options ();
4530 if (argbuf.length () > 0)
4538 do_spec_2 (const char *spec)
4544 delete_this_arg = 0;
4545 this_is_output_file = 0;
4546 this_is_library_file = 0;
4547 this_is_linker_script = 0;
4548 input_from_pipe = 0;
4549 suffix_subst = NULL;
4551 result = do_spec_1 (spec, 0, NULL);
4559 /* Process the given spec string and add any new options to the end
4560 of the switches/n_switches array. */
4563 do_option_spec (const char *name, const char *spec)
4565 unsigned int i, value_count, value_len;
4566 const char *p, *q, *value;
4567 char *tmp_spec, *tmp_spec_p;
4569 if (configure_default_options[0].name == NULL)
4572 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4573 if (strcmp (configure_default_options[i].name, name) == 0)
4575 if (i == ARRAY_SIZE (configure_default_options))
4578 value = configure_default_options[i].value;
4579 value_len = strlen (value);
4581 /* Compute the size of the final spec. */
4584 while ((p = strstr (p, "%(VALUE)")) != NULL)
4590 /* Replace each %(VALUE) by the specified value. */
4591 tmp_spec = (char *) alloca (strlen (spec) + 1
4592 + value_count * (value_len - strlen ("%(VALUE)")));
4593 tmp_spec_p = tmp_spec;
4595 while ((p = strstr (q, "%(VALUE)")) != NULL)
4597 memcpy (tmp_spec_p, q, p - q);
4598 tmp_spec_p = tmp_spec_p + (p - q);
4599 memcpy (tmp_spec_p, value, value_len);
4600 tmp_spec_p += value_len;
4601 q = p + strlen ("%(VALUE)");
4603 strcpy (tmp_spec_p, q);
4605 do_self_spec (tmp_spec);
4608 /* Process the given spec string and add any new options to the end
4609 of the switches/n_switches array. */
4612 do_self_spec (const char *spec)
4617 do_spec_1 (" ", 0, NULL);
4619 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4620 do_self_specs adds the replacements to switches array, so it shouldn't
4621 be processed afterwards. */
4622 for (i = 0; i < n_switches; i++)
4623 if ((switches[i].live_cond & SWITCH_IGNORE))
4624 switches[i].live_cond |= SWITCH_IGNORE_PERMANENTLY;
4626 if (argbuf.length () > 0)
4628 const char **argbuf_copy;
4629 struct cl_decoded_option *decoded_options;
4630 struct cl_option_handlers handlers;
4631 unsigned int decoded_options_count;
4634 /* Create a copy of argbuf with a dummy argv[0] entry for
4635 decode_cmdline_options_to_array. */
4636 argbuf_copy = XNEWVEC (const char *,
4637 argbuf.length () + 1);
4638 argbuf_copy[0] = "";
4639 memcpy (argbuf_copy + 1, argbuf.address (),
4640 argbuf.length () * sizeof (const char *));
4642 decode_cmdline_options_to_array (argbuf.length () + 1,
4644 CL_DRIVER, &decoded_options,
4645 &decoded_options_count);
4648 set_option_handlers (&handlers);
4650 for (j = 1; j < decoded_options_count; j++)
4652 switch (decoded_options[j].opt_index)
4654 case OPT_SPECIAL_input_file:
4655 /* Specs should only generate options, not input
4657 if (strcmp (decoded_options[j].arg, "-") != 0)
4658 fatal_error ("switch %qs does not start with %<-%>",
4659 decoded_options[j].arg);
4661 fatal_error ("spec-generated switch is just %<-%>");
4664 case OPT_fcompare_debug_second:
4665 case OPT_fcompare_debug:
4666 case OPT_fcompare_debug_:
4668 /* Avoid duplicate processing of some options from
4669 compare-debug specs; just save them here. */
4670 save_switch (decoded_options[j].canonical_option[0],
4671 (decoded_options[j].canonical_option_num_elements
4673 &decoded_options[j].canonical_option[1], false, true);
4677 read_cmdline_option (&global_options, &global_options_set,
4678 decoded_options + j, UNKNOWN_LOCATION,
4679 CL_DRIVER, &handlers, global_dc);
4685 switches[n_switches].part1 = 0;
4689 /* Callback for processing %D and %I specs. */
4691 struct spec_path_info {
4696 bool separate_options;
4700 spec_path (char *path, void *data)
4702 struct spec_path_info *info = (struct spec_path_info *) data;
4706 if (info->omit_relative && !IS_ABSOLUTE_PATH (path))
4709 if (info->append_len != 0)
4711 len = strlen (path);
4712 memcpy (path + len, info->append, info->append_len + 1);
4715 if (!is_directory (path, true))
4718 do_spec_1 (info->option, 1, NULL);
4719 if (info->separate_options)
4720 do_spec_1 (" ", 0, NULL);
4722 if (info->append_len == 0)
4724 len = strlen (path);
4725 save = path[len - 1];
4726 if (IS_DIR_SEPARATOR (path[len - 1]))
4727 path[len - 1] = '\0';
4730 do_spec_1 (path, 1, NULL);
4731 do_spec_1 (" ", 0, NULL);
4733 /* Must not damage the original path. */
4734 if (info->append_len == 0)
4735 path[len - 1] = save;
4740 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4744 create_at_file (char **argv)
4746 char *temp_file = make_temp_file ("");
4747 char *at_argument = concat ("@", temp_file, NULL);
4748 FILE *f = fopen (temp_file, "w");
4752 fatal_error ("could not open temporary response file %s",
4755 status = writeargv (argv, f);
4758 fatal_error ("could not write to temporary response file %s",
4761 status = fclose (f);
4764 fatal_error ("could not close temporary response file %s",
4767 store_arg (at_argument, 0, 0);
4769 record_temp_file (temp_file, !save_temps_flag, !save_temps_flag);
4772 /* True if we should compile INFILE. */
4775 compile_input_file_p (struct infile *infile)
4777 if ((!infile->language) || (infile->language[0] != '*'))
4778 if (infile->incompiler == input_file_compiler)
4783 /* Process each member of VEC as a spec. */
4786 do_specs_vec (vec<char_p> vec)
4791 FOR_EACH_VEC_ELT (vec, ix, opt)
4793 do_spec_1 (opt, 1, NULL);
4794 /* Make each accumulated option a separate argument. */
4795 do_spec_1 (" ", 0, NULL);
4799 /* Process the sub-spec SPEC as a portion of a larger spec.
4800 This is like processing a whole spec except that we do
4801 not initialize at the beginning and we do not supply a
4802 newline by default at the end.
4803 INSWITCH nonzero means don't process %-sequences in SPEC;
4804 in this case, % is treated as an ordinary character.
4805 This is used while substituting switches.
4806 INSWITCH nonzero also causes SPC not to terminate an argument.
4808 Value is zero unless a line was finished
4809 and the command on that line reported an error. */
4812 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4814 const char *p = spec;
4819 /* If it's an empty string argument to a switch, keep it as is. */
4820 if (inswitch && !*p)
4824 /* If substituting a switch, treat all chars like letters.
4825 Otherwise, NL, SPC, TAB and % are special. */
4826 switch (inswitch ? 'a' : c)
4831 if (argbuf.length () > 0
4832 && !strcmp (argbuf.last (), "|"))
4834 /* A `|' before the newline means use a pipe here,
4835 but only if -pipe was specified.
4836 Otherwise, execute now and don't pass the `|' as an arg. */
4839 input_from_pipe = 1;
4846 set_collect_gcc_options ();
4848 if (argbuf.length () > 0)
4854 /* Reinitialize for a new command, and for a new argument. */
4857 delete_this_arg = 0;
4858 this_is_output_file = 0;
4859 this_is_library_file = 0;
4860 this_is_linker_script = 0;
4861 input_from_pipe = 0;
4868 obstack_1grow (&obstack, c);
4876 /* Reinitialize for a new argument. */
4877 delete_this_arg = 0;
4878 this_is_output_file = 0;
4879 this_is_library_file = 0;
4880 this_is_linker_script = 0;
4887 fatal_error ("spec %qs invalid", spec);
4890 if (save_temps_length)
4891 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4893 obstack_grow (&obstack, input_basename, basename_length);
4894 if (compare_debug < 0)
4895 obstack_grow (&obstack, ".gk", 3);
4900 if (save_temps_length)
4901 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4903 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4904 if (compare_debug < 0)
4905 obstack_grow (&obstack, ".gk", 3);
4910 delete_this_arg = 2;
4913 /* Dump out the directories specified with LIBRARY_PATH,
4914 followed by the absolute directories
4915 that we search for startfiles. */
4918 struct spec_path_info info;
4921 info.append_len = 0;
4922 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4923 /* Used on systems which record the specified -L dirs
4924 and use them to search for dynamic linking.
4925 Relative directories always come from -B,
4926 and it is better not to use them for searching
4927 at run time. In particular, stage1 loses. */
4928 info.omit_relative = true;
4930 info.omit_relative = false;
4932 info.separate_options = false;
4934 for_each_path (&startfile_prefixes, true, 0, spec_path, &info);
4939 /* %efoo means report an error with `foo' as error message
4940 and don't execute any more commands for this file. */
4944 while (*p != 0 && *p != '\n')
4946 buf = (char *) alloca (p - q + 1);
4947 strncpy (buf, q, p - q);
4949 error ("%s", _(buf));
4954 /* %nfoo means report a notice with `foo' on stderr. */
4958 while (*p != 0 && *p != '\n')
4960 buf = (char *) alloca (p - q + 1);
4961 strncpy (buf, q, p - q);
4963 inform (0, "%s", _(buf));
4973 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4974 defined, and it is not a directory, and it is
4975 writable, use it. Otherwise, treat this like any
4976 other temporary file. */
4978 if ((!save_temps_flag)
4979 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4980 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4982 obstack_grow (&obstack, HOST_BIT_BUCKET,
4983 strlen (HOST_BIT_BUCKET));
4984 delete_this_arg = 0;
4989 goto create_temp_file;
4993 obstack_1grow (&obstack, '-');
4994 delete_this_arg = 0;
4997 /* consume suffix */
4998 while (*p == '.' || ISALNUM ((unsigned char) *p))
5000 if (p[0] == '%' && p[1] == 'O')
5005 goto create_temp_file;
5009 /* consume suffix */
5010 while (*p == '.' || ISALNUM ((unsigned char) *p))
5012 if (p[0] == '%' && p[1] == 'O')
5017 goto create_temp_file;
5023 struct temp_name *t;
5025 const char *suffix = p;
5026 char *saved_suffix = NULL;
5028 while (*p == '.' || ISALNUM ((unsigned char) *p))
5030 suffix_length = p - suffix;
5031 if (p[0] == '%' && p[1] == 'O')
5034 /* We don't support extra suffix characters after %O. */
5035 if (*p == '.' || ISALNUM ((unsigned char) *p))
5036 fatal_error ("spec %qs has invalid %<%%0%c%>", spec, *p);
5037 if (suffix_length == 0)
5038 suffix = TARGET_OBJECT_SUFFIX;
5042 = XNEWVEC (char, suffix_length
5043 + strlen (TARGET_OBJECT_SUFFIX) + 1);
5044 strncpy (saved_suffix, suffix, suffix_length);
5045 strcpy (saved_suffix + suffix_length,
5046 TARGET_OBJECT_SUFFIX);
5048 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
5051 if (compare_debug < 0)
5053 suffix = concat (".gk", suffix, NULL);
5057 /* If -save-temps=obj and -o were specified, use that for the
5059 if (save_temps_length)
5062 temp_filename_length
5063 = save_temps_length + suffix_length + 1;
5064 tmp = (char *) alloca (temp_filename_length);
5065 memcpy (tmp, save_temps_prefix, save_temps_length);
5066 memcpy (tmp + save_temps_length, suffix, suffix_length);
5067 tmp[save_temps_length + suffix_length] = '\0';
5068 temp_filename = save_string (tmp, save_temps_length
5070 obstack_grow (&obstack, temp_filename,
5071 temp_filename_length);
5073 delete_this_arg = 0;
5077 /* If the gcc_input_filename has the same suffix specified
5078 for the %g, %u, or %U, and -save-temps is specified,
5079 we could end up using that file as an intermediate
5080 thus clobbering the user's source file (.e.g.,
5081 gcc -save-temps foo.s would clobber foo.s with the
5082 output of cpp0). So check for this condition and
5083 generate a temp file as the intermediate. */
5085 if (save_temps_flag)
5088 temp_filename_length = basename_length + suffix_length + 1;
5089 tmp = (char *) alloca (temp_filename_length);
5090 memcpy (tmp, input_basename, basename_length);
5091 memcpy (tmp + basename_length, suffix, suffix_length);
5092 tmp[basename_length + suffix_length] = '\0';
5093 temp_filename = tmp;
5095 if (filename_cmp (temp_filename, gcc_input_filename) != 0)
5097 #ifndef HOST_LACKS_INODE_NUMBERS
5098 struct stat st_temp;
5100 /* Note, set_input() resets input_stat_set to 0. */
5101 if (input_stat_set == 0)
5103 input_stat_set = stat (gcc_input_filename,
5105 if (input_stat_set >= 0)
5109 /* If we have the stat for the gcc_input_filename
5110 and we can do the stat for the temp_filename
5111 then the they could still refer to the same
5112 file if st_dev/st_ino's are the same. */
5113 if (input_stat_set != 1
5114 || stat (temp_filename, &st_temp) < 0
5115 || input_stat.st_dev != st_temp.st_dev
5116 || input_stat.st_ino != st_temp.st_ino)
5118 /* Just compare canonical pathnames. */
5119 char* input_realname = lrealpath (gcc_input_filename);
5120 char* temp_realname = lrealpath (temp_filename);
5121 bool files_differ = filename_cmp (input_realname, temp_realname);
5122 free (input_realname);
5123 free (temp_realname);
5127 temp_filename = save_string (temp_filename,
5128 temp_filename_length + 1);
5129 obstack_grow (&obstack, temp_filename,
5130 temp_filename_length);
5132 delete_this_arg = 0;
5138 /* See if we already have an association of %g/%u/%U and
5140 for (t = temp_names; t; t = t->next)
5141 if (t->length == suffix_length
5142 && strncmp (t->suffix, suffix, suffix_length) == 0
5143 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
5146 /* Make a new association if needed. %u and %j
5148 if (t == 0 || c == 'u' || c == 'j')
5152 t = XNEW (struct temp_name);
5153 t->next = temp_names;
5156 t->length = suffix_length;
5159 t->suffix = saved_suffix;
5160 saved_suffix = NULL;
5163 t->suffix = save_string (suffix, suffix_length);
5164 t->unique = (c == 'u' || c == 'U' || c == 'j');
5165 temp_filename = make_temp_file (t->suffix);
5166 temp_filename_length = strlen (temp_filename);
5167 t->filename = temp_filename;
5168 t->filename_length = temp_filename_length;
5171 free (saved_suffix);
5173 obstack_grow (&obstack, t->filename, t->filename_length);
5174 delete_this_arg = 1;
5182 if (at_file_supplied)
5184 /* We are going to expand `%i' to `@FILE', where FILE
5185 is a newly-created temporary filename. The filenames
5186 that would usually be expanded in place of %o will be
5187 written to the temporary file. */
5192 for (i = 0; i < n_infiles; i++)
5193 if (compile_input_file_p (&infiles[i]))
5196 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
5198 /* Copy the strings over. */
5199 for (i = 0, j = 0; i < n_infiles; i++)
5200 if (compile_input_file_p (&infiles[i]))
5202 argv[j] = CONST_CAST (char *, infiles[i].name);
5203 infiles[i].compiled = true;
5208 create_at_file (argv);
5211 for (i = 0; (int) i < n_infiles; i++)
5212 if (compile_input_file_p (&infiles[i]))
5214 store_arg (infiles[i].name, 0, 0);
5215 infiles[i].compiled = true;
5220 obstack_grow (&obstack, gcc_input_filename,
5221 input_filename_length);
5228 struct spec_path_info info;
5232 do_spec_1 ("-imultilib", 1, NULL);
5233 /* Make this a separate argument. */
5234 do_spec_1 (" ", 0, NULL);
5235 do_spec_1 (multilib_dir, 1, NULL);
5236 do_spec_1 (" ", 0, NULL);
5241 do_spec_1 ("-imultiarch", 1, NULL);
5242 /* Make this a separate argument. */
5243 do_spec_1 (" ", 0, NULL);
5244 do_spec_1 (multiarch_dir, 1, NULL);
5245 do_spec_1 (" ", 0, NULL);
5248 if (gcc_exec_prefix)
5250 do_spec_1 ("-iprefix", 1, NULL);
5251 /* Make this a separate argument. */
5252 do_spec_1 (" ", 0, NULL);
5253 do_spec_1 (gcc_exec_prefix, 1, NULL);
5254 do_spec_1 (" ", 0, NULL);
5257 if (target_system_root_changed ||
5258 (target_system_root && target_sysroot_hdrs_suffix))
5260 do_spec_1 ("-isysroot", 1, NULL);
5261 /* Make this a separate argument. */
5262 do_spec_1 (" ", 0, NULL);
5263 do_spec_1 (target_system_root, 1, NULL);
5264 if (target_sysroot_hdrs_suffix)
5265 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
5266 do_spec_1 (" ", 0, NULL);
5269 info.option = "-isystem";
5270 info.append = "include";
5271 info.append_len = strlen (info.append);
5272 info.omit_relative = false;
5273 info.separate_options = true;
5275 for_each_path (&include_prefixes, false, info.append_len,
5278 info.append = "include-fixed";
5279 if (*sysroot_hdrs_suffix_spec)
5280 info.append = concat (info.append, dir_separator_str,
5281 multilib_dir, NULL);
5282 info.append_len = strlen (info.append);
5283 for_each_path (&include_prefixes, false, info.append_len,
5290 int max = n_infiles;
5291 max += lang_specific_extra_outfiles;
5293 if (HAVE_GNU_LD && at_file_supplied)
5295 /* We are going to expand `%o' to `@FILE', where FILE
5296 is a newly-created temporary filename. The filenames
5297 that would usually be expanded in place of %o will be
5298 written to the temporary file. */
5303 /* Convert OUTFILES into a form suitable for writeargv. */
5305 /* Determine how many are non-NULL. */
5306 for (n_files = 0, i = 0; i < max; i++)
5307 n_files += outfiles[i] != NULL;
5309 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
5311 /* Copy the strings over. */
5312 for (i = 0, j = 0; i < max; i++)
5315 argv[j] = CONST_CAST (char *, outfiles[i]);
5320 create_at_file (argv);
5323 for (i = 0; i < max; i++)
5325 store_arg (outfiles[i], 0, 0);
5330 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
5335 this_is_library_file = 1;
5339 this_is_linker_script = 1;
5343 outfiles[input_file_number] = NULL;
5347 this_is_output_file = 1;
5352 unsigned int cur_index = argbuf.length ();
5353 /* Handle the {...} following the %W. */
5355 fatal_error ("spec %qs has invalid %<%%W%c%>", spec, *p);
5356 p = handle_braces (p + 1);
5360 /* If any args were output, mark the last one for deletion
5362 if (argbuf.length () != cur_index)
5363 record_temp_file (argbuf.last (), 0, 1);
5367 /* %x{OPTION} records OPTION for %X to output. */
5375 /* Skip past the option value and make a copy. */
5377 fatal_error ("spec %qs has invalid %<%%x%c%>", spec, *p);
5380 string = save_string (p1 + 1, p - p1 - 2);
5382 /* See if we already recorded this option. */
5383 FOR_EACH_VEC_ELT (linker_options, ix, opt)
5384 if (! strcmp (string, opt))
5390 /* This option is new; add it. */
5391 add_linker_option (string, strlen (string));
5396 /* Dump out the options accumulated previously using %x. */
5398 do_specs_vec (linker_options);
5401 /* Dump out the options accumulated previously using -Wa,. */
5403 do_specs_vec (assembler_options);
5406 /* Dump out the options accumulated previously using -Wp,. */
5408 do_specs_vec (preprocessor_options);
5411 /* Here are digits and numbers that just process
5412 a certain constant string as a spec. */
5415 value = do_spec_1 (cc1_spec, 0, NULL);
5421 value = do_spec_1 (cc1plus_spec, 0, NULL);
5427 value = do_spec_1 (asm_spec, 0, NULL);
5433 value = do_spec_1 (asm_final_spec, 0, NULL);
5440 const char *const spec
5441 = (input_file_compiler->cpp_spec
5442 ? input_file_compiler->cpp_spec
5444 value = do_spec_1 (spec, 0, NULL);
5451 value = do_spec_1 (endfile_spec, 0, NULL);
5457 value = do_spec_1 (link_spec, 0, NULL);
5463 value = do_spec_1 (lib_spec, 0, NULL);
5469 if (multilib_os_dir == NULL)
5470 obstack_1grow (&obstack, '.');
5472 obstack_grow (&obstack, multilib_os_dir,
5473 strlen (multilib_os_dir));
5477 value = do_spec_1 (libgcc_spec, 0, NULL);
5483 /* We assume there is a directory
5484 separator at the end of this string. */
5485 if (target_system_root)
5487 obstack_grow (&obstack, target_system_root,
5488 strlen (target_system_root));
5489 if (target_sysroot_suffix)
5490 obstack_grow (&obstack, target_sysroot_suffix,
5491 strlen (target_sysroot_suffix));
5496 value = do_spec_1 (startfile_spec, 0, NULL);
5501 /* Here we define characters other than letters and digits. */
5504 p = handle_braces (p);
5510 p = handle_spec_function (p, NULL);
5516 obstack_1grow (&obstack, '%');
5523 while (p[len] && p[len] != ' ' && p[len] != '%')
5525 suffix_subst = save_string (p - 1, len + 1);
5530 /* Henceforth ignore the option(s) matching the pattern
5536 int have_wildcard = 0;
5541 switch_option = SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC;
5543 switch_option = SWITCH_IGNORE;
5545 while (p[len] && p[len] != ' ' && p[len] != '\t')
5548 if (p[len-1] == '*')
5551 for (i = 0; i < n_switches; i++)
5552 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5553 && (have_wildcard || switches[i].part1[len] == '\0'))
5555 switches[i].live_cond |= switch_option;
5556 /* User switch be validated from validate_all_switches.
5557 when the definition is seen from the spec file.
5558 If not defined anywhere, will be rejected. */
5559 if (switches[i].known)
5560 switches[i].validated = true;
5568 if (soft_matched_part)
5570 if (soft_matched_part[0])
5571 do_spec_1 (soft_matched_part, 1, NULL);
5572 /* Only insert a space after the substitution if it is at the
5573 end of the current sequence. So if:
5575 "%{foo=*:bar%*}%{foo=*:one%*two}"
5577 matches -foo=hello then it will produce:
5579 barhello onehellotwo
5581 if (*p == 0 || *p == '}')
5582 do_spec_1 (" ", 0, NULL);
5585 /* Catch the case where a spec string contains something like
5586 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5587 hand side of the :. */
5588 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5591 /* Process a string found as the value of a spec given by name.
5592 This feature allows individual machine descriptions
5593 to add and use their own specs. */
5596 const char *name = p;
5597 struct spec_list *sl;
5600 /* The string after the S/P is the name of a spec that is to be
5602 while (*p && *p != ')')
5605 /* See if it's in the list. */
5606 for (len = p - name, sl = specs; sl; sl = sl->next)
5607 if (sl->name_len == len && !strncmp (sl->name, name, len))
5609 name = *(sl->ptr_spec);
5611 fnotice (stderr, "Processing spec (%s), which is '%s'\n",
5619 value = do_spec_1 (name, 0, NULL);
5624 /* Discard the closing paren. */
5631 error ("spec failure: unrecognized spec option %qc", c);
5637 /* Backslash: treat next character as ordinary. */
5642 /* Ordinary character: put it into the current argument. */
5643 obstack_1grow (&obstack, c);
5647 /* End of string. If we are processing a spec function, we need to
5648 end any pending argument. */
5649 if (processing_spec_function)
5655 /* Look up a spec function. */
5657 static const struct spec_function *
5658 lookup_spec_function (const char *name)
5660 const struct spec_function *sf;
5662 for (sf = static_spec_functions; sf->name != NULL; sf++)
5663 if (strcmp (sf->name, name) == 0)
5669 /* Evaluate a spec function. */
5672 eval_spec_function (const char *func, const char *args)
5674 const struct spec_function *sf;
5675 const char *funcval;
5677 /* Saved spec processing context. */
5678 vec<const_char_p> save_argbuf;
5681 int save_delete_this_arg;
5682 int save_this_is_output_file;
5683 int save_this_is_library_file;
5684 int save_input_from_pipe;
5685 int save_this_is_linker_script;
5686 const char *save_suffix_subst;
5688 int save_growing_size;
5689 void *save_growing_value = NULL;
5691 sf = lookup_spec_function (func);
5693 fatal_error ("unknown spec function %qs", func);
5695 /* Push the spec processing context. */
5696 save_argbuf = argbuf;
5698 save_arg_going = arg_going;
5699 save_delete_this_arg = delete_this_arg;
5700 save_this_is_output_file = this_is_output_file;
5701 save_this_is_library_file = this_is_library_file;
5702 save_this_is_linker_script = this_is_linker_script;
5703 save_input_from_pipe = input_from_pipe;
5704 save_suffix_subst = suffix_subst;
5706 /* If we have some object growing now, finalize it so the args and function
5707 eval proceed from a cleared context. This is needed to prevent the first
5708 constructed arg from mistakenly including the growing value. We'll push
5709 this value back on the obstack once the function evaluation is done, to
5710 restore a consistent processing context for our caller. This is fine as
5711 the address of growing objects isn't guaranteed to remain stable until
5712 they are finalized, and we expect this situation to be rare enough for
5713 the extra copy not to be an issue. */
5714 save_growing_size = obstack_object_size (&obstack);
5715 if (save_growing_size > 0)
5716 save_growing_value = obstack_finish (&obstack);
5718 /* Create a new spec processing context, and build the function
5722 if (do_spec_2 (args) < 0)
5723 fatal_error ("error in args to spec function %qs", func);
5725 /* argbuf_index is an index for the next argument to be inserted, and
5726 so contains the count of the args already inserted. */
5728 funcval = (*sf->func) (argbuf.length (),
5731 /* Pop the spec processing context. */
5733 argbuf = save_argbuf;
5735 arg_going = save_arg_going;
5736 delete_this_arg = save_delete_this_arg;
5737 this_is_output_file = save_this_is_output_file;
5738 this_is_library_file = save_this_is_library_file;
5739 this_is_linker_script = save_this_is_linker_script;
5740 input_from_pipe = save_input_from_pipe;
5741 suffix_subst = save_suffix_subst;
5743 if (save_growing_size > 0)
5744 obstack_grow (&obstack, save_growing_value, save_growing_size);
5749 /* Handle a spec function call of the form:
5753 ARGS is processed as a spec in a separate context and split into an
5754 argument vector in the normal fashion. The function returns a string
5755 containing a spec which we then process in the caller's context, or
5756 NULL if no processing is required.
5758 If RETVAL_NONNULL is not NULL, then store a bool whether function
5759 returned non-NULL. */
5762 handle_spec_function (const char *p, bool *retval_nonnull)
5765 const char *endp, *funcval;
5768 processing_spec_function++;
5770 /* Get the function name. */
5771 for (endp = p; *endp != '\0'; endp++)
5773 if (*endp == '(') /* ) */
5775 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5776 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5777 fatal_error ("malformed spec function name");
5779 if (*endp != '(') /* ) */
5780 fatal_error ("no arguments for spec function");
5781 func = save_string (p, endp - p);
5784 /* Get the arguments. */
5785 for (count = 0; *endp != '\0'; endp++)
5794 else if (*endp == '(') /* ) */
5799 fatal_error ("malformed spec function arguments");
5800 args = save_string (p, endp - p);
5803 /* p now points to just past the end of the spec function expression. */
5805 funcval = eval_spec_function (func, args);
5806 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5809 *retval_nonnull = funcval != NULL;
5814 processing_spec_function--;
5819 /* Inline subroutine of handle_braces. Returns true if the current
5820 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5822 input_suffix_matches (const char *atom, const char *end_atom)
5824 return (input_suffix
5825 && !strncmp (input_suffix, atom, end_atom - atom)
5826 && input_suffix[end_atom - atom] == '\0');
5829 /* Subroutine of handle_braces. Returns true if the current
5830 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5832 input_spec_matches (const char *atom, const char *end_atom)
5834 return (input_file_compiler
5835 && input_file_compiler->suffix
5836 && input_file_compiler->suffix[0] != '\0'
5837 && !strncmp (input_file_compiler->suffix + 1, atom,
5839 && input_file_compiler->suffix[end_atom - atom + 1] == '\0');
5842 /* Subroutine of handle_braces. Returns true if a switch
5843 matching the atom bracketed by ATOM and END_ATOM appeared on the
5846 switch_matches (const char *atom, const char *end_atom, int starred)
5849 int len = end_atom - atom;
5850 int plen = starred ? len : -1;
5852 for (i = 0; i < n_switches; i++)
5853 if (!strncmp (switches[i].part1, atom, len)
5854 && (starred || switches[i].part1[len] == '\0')
5855 && check_live_switch (i, plen))
5858 /* Check if a switch with separated form matching the atom.
5859 We check -D and -U switches. */
5860 else if (switches[i].args != 0)
5862 if ((*switches[i].part1 == 'D' || *switches[i].part1 == 'U')
5863 && *switches[i].part1 == atom[0])
5865 if (!strncmp (switches[i].args[0], &atom[1], len - 1)
5866 && (starred || (switches[i].part1[1] == '\0'
5867 && switches[i].args[0][len - 1] == '\0'))
5868 && check_live_switch (i, (starred ? 1 : -1)))
5876 /* Inline subroutine of handle_braces. Mark all of the switches which
5877 match ATOM (extends to END_ATOM; STARRED indicates whether there
5878 was a star after the atom) for later processing. */
5880 mark_matching_switches (const char *atom, const char *end_atom, int starred)
5883 int len = end_atom - atom;
5884 int plen = starred ? len : -1;
5886 for (i = 0; i < n_switches; i++)
5887 if (!strncmp (switches[i].part1, atom, len)
5888 && (starred || switches[i].part1[len] == '\0')
5889 && check_live_switch (i, plen))
5890 switches[i].ordering = 1;
5893 /* Inline subroutine of handle_braces. Process all the currently
5894 marked switches through give_switch, and clear the marks. */
5896 process_marked_switches (void)
5900 for (i = 0; i < n_switches; i++)
5901 if (switches[i].ordering == 1)
5903 switches[i].ordering = 0;
5908 /* Handle a %{ ... } construct. P points just inside the leading {.
5909 Returns a pointer one past the end of the brace block, or 0
5910 if we call do_spec_1 and that returns -1. */
5913 handle_braces (const char *p)
5915 const char *atom, *end_atom;
5916 const char *d_atom = NULL, *d_end_atom = NULL;
5917 const char *orig = p;
5925 bool a_must_be_last = false;
5926 bool ordered_set = false;
5927 bool disjunct_set = false;
5928 bool disj_matched = false;
5929 bool disj_starred = true;
5930 bool n_way_choice = false;
5931 bool n_way_matched = false;
5933 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5940 /* Scan one "atom" (S in the description above of %{}, possibly
5941 with '!', '.', '@', ',', or '*' modifiers). */
5943 a_is_suffix = false;
5944 a_is_starred = false;
5945 a_is_negated = false;
5946 a_is_spectype = false;
5950 p++, a_is_negated = true;
5953 if (*p == '%' && p[1] == ':')
5957 p = handle_spec_function (p + 2, &a_matched);
5962 p++, a_is_suffix = true;
5964 p++, a_is_spectype = true;
5967 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
5968 || *p == ',' || *p == '.' || *p == '@')
5973 p++, a_is_starred = 1;
5980 /* Substitute the switch(es) indicated by the current atom. */
5982 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5983 || a_is_spectype || atom == end_atom)
5986 mark_matching_switches (atom, end_atom, a_is_starred);
5989 process_marked_switches ();
5993 /* Substitute some text if the current atom appears as a switch
5995 disjunct_set = true;
5999 if (atom && atom == end_atom)
6001 if (!n_way_choice || disj_matched || *p == '|'
6002 || a_is_negated || a_is_suffix || a_is_spectype
6006 /* An empty term may appear as the last choice of an
6007 N-way choice set; it means "otherwise". */
6008 a_must_be_last = true;
6009 disj_matched = !n_way_matched;
6010 disj_starred = false;
6014 if ((a_is_suffix || a_is_spectype) && a_is_starred)
6018 disj_starred = false;
6020 /* Don't bother testing this atom if we already have a
6022 if (!disj_matched && !n_way_matched)
6025 /* a_matched is already set by handle_spec_function. */;
6026 else if (a_is_suffix)
6027 a_matched = input_suffix_matches (atom, end_atom);
6028 else if (a_is_spectype)
6029 a_matched = input_spec_matches (atom, end_atom);
6031 a_matched = switch_matches (atom, end_atom, a_is_starred);
6033 if (a_matched != a_is_negated)
6035 disj_matched = true;
6037 d_end_atom = end_atom;
6044 /* Found the body, that is, the text to substitute if the
6045 current disjunction matches. */
6046 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
6047 disj_matched && !n_way_matched);
6051 /* If we have an N-way choice, reset state for the next
6055 n_way_choice = true;
6056 n_way_matched |= disj_matched;
6057 disj_matched = false;
6058 disj_starred = true;
6059 d_atom = d_end_atom = NULL;
6068 while (*p++ != '}');
6073 fatal_error ("braced spec %qs is invalid at %qc", orig, *p);
6078 /* Subroutine of handle_braces. Scan and process a brace substitution body
6079 (X in the description of %{} syntax). P points one past the colon;
6080 ATOM and END_ATOM bracket the first atom which was found to be true
6081 (present) in the current disjunction; STARRED indicates whether all
6082 the atoms in the current disjunction were starred (for syntax validation);
6083 MATCHED indicates whether the disjunction matched or not, and therefore
6084 whether or not the body is to be processed through do_spec_1 or just
6085 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
6089 process_brace_body (const char *p, const char *atom, const char *end_atom,
6090 int starred, int matched)
6092 const char *body, *end_body;
6093 unsigned int nesting_level;
6094 bool have_subst = false;
6096 /* Locate the closing } or ;, honoring nested braces.
6097 Trim trailing whitespace. */
6106 if (!--nesting_level)
6109 else if (*p == ';' && nesting_level == 1)
6111 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
6113 else if (*p == '\0')
6119 while (end_body[-1] == ' ' || end_body[-1] == '\t')
6122 if (have_subst && !starred)
6127 /* Copy the substitution body to permanent storage and execute it.
6128 If have_subst is false, this is a simple matter of running the
6129 body through do_spec_1... */
6130 char *string = save_string (body, end_body - body);
6133 if (do_spec_1 (string, 0, NULL) < 0)
6138 /* ... but if have_subst is true, we have to process the
6139 body once for each matching switch, with %* set to the
6140 variant part of the switch. */
6141 unsigned int hard_match_len = end_atom - atom;
6144 for (i = 0; i < n_switches; i++)
6145 if (!strncmp (switches[i].part1, atom, hard_match_len)
6146 && check_live_switch (i, hard_match_len))
6148 if (do_spec_1 (string, 0,
6149 &switches[i].part1[hard_match_len]) < 0)
6151 /* Pass any arguments this switch has. */
6153 suffix_subst = NULL;
6161 fatal_error ("braced spec body %qs is invalid", body);
6164 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
6165 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
6166 spec, or -1 if either exact match or %* is used.
6168 A -O switch is obsoleted by a later -O switch. A -f, -g, -m, or -W switch
6169 whose value does not begin with "no-" is obsoleted by the same value
6170 with the "no-", similarly for a switch with the "no-" prefix. */
6173 check_live_switch (int switchnum, int prefix_length)
6175 const char *name = switches[switchnum].part1;
6178 /* If we already processed this switch and determined if it was
6179 live or not, return our past determination. */
6180 if (switches[switchnum].live_cond != 0)
6181 return ((switches[switchnum].live_cond & SWITCH_LIVE) != 0
6182 && (switches[switchnum].live_cond & SWITCH_FALSE) == 0
6183 && (switches[switchnum].live_cond & SWITCH_IGNORE_PERMANENTLY)
6186 /* In the common case of {<at-most-one-letter>*}, a negating
6187 switch would always match, so ignore that case. We will just
6188 send the conflicting switches to the compiler phase. */
6189 if (prefix_length >= 0 && prefix_length <= 1)
6192 /* Now search for duplicate in a manner that depends on the name. */
6196 for (i = switchnum + 1; i < n_switches; i++)
6197 if (switches[i].part1[0] == 'O')
6199 switches[switchnum].validated = true;
6200 switches[switchnum].live_cond = SWITCH_FALSE;
6205 case 'W': case 'f': case 'm': case 'g':
6206 if (! strncmp (name + 1, "no-", 3))
6208 /* We have Xno-YYY, search for XYYY. */
6209 for (i = switchnum + 1; i < n_switches; i++)
6210 if (switches[i].part1[0] == name[0]
6211 && ! strcmp (&switches[i].part1[1], &name[4]))
6213 /* --specs are validated with the validate_switches mechanism. */
6214 if (switches[switchnum].known)
6215 switches[switchnum].validated = true;
6216 switches[switchnum].live_cond = SWITCH_FALSE;
6222 /* We have XYYY, search for Xno-YYY. */
6223 for (i = switchnum + 1; i < n_switches; i++)
6224 if (switches[i].part1[0] == name[0]
6225 && switches[i].part1[1] == 'n'
6226 && switches[i].part1[2] == 'o'
6227 && switches[i].part1[3] == '-'
6228 && !strcmp (&switches[i].part1[4], &name[1]))
6230 /* --specs are validated with the validate_switches mechanism. */
6231 if (switches[switchnum].known)
6232 switches[switchnum].validated = true;
6233 switches[switchnum].live_cond = SWITCH_FALSE;
6240 /* Otherwise the switch is live. */
6241 switches[switchnum].live_cond |= SWITCH_LIVE;
6245 /* Pass a switch to the current accumulating command
6246 in the same form that we received it.
6247 SWITCHNUM identifies the switch; it is an index into
6248 the vector of switches gcc received, which is `switches'.
6249 This cannot fail since it never finishes a command line.
6251 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
6254 give_switch (int switchnum, int omit_first_word)
6256 if ((switches[switchnum].live_cond & SWITCH_IGNORE) != 0)
6259 if (!omit_first_word)
6261 do_spec_1 ("-", 0, NULL);
6262 do_spec_1 (switches[switchnum].part1, 1, NULL);
6265 if (switches[switchnum].args != 0)
6268 for (p = switches[switchnum].args; *p; p++)
6270 const char *arg = *p;
6272 do_spec_1 (" ", 0, NULL);
6275 unsigned length = strlen (arg);
6278 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
6279 if (arg[length] == '.')
6281 (CONST_CAST (char *, arg))[length] = 0;
6285 do_spec_1 (arg, 1, NULL);
6287 (CONST_CAST (char *, arg))[length] = '.';
6288 do_spec_1 (suffix_subst, 1, NULL);
6291 do_spec_1 (arg, 1, NULL);
6295 do_spec_1 (" ", 0, NULL);
6296 switches[switchnum].validated = true;
6299 /* Print GCC configuration (e.g. version, thread model, target,
6300 configuration_arguments) to a given FILE. */
6303 print_configuration (FILE *file)
6308 fnotice (file, "Target: %s\n", spec_machine);
6309 fnotice (file, "Configured with: %s\n", configuration_arguments);
6311 #ifdef THREAD_MODEL_SPEC
6312 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6313 but there's no point in doing all this processing just to get
6314 thread_model back. */
6315 obstack_init (&obstack);
6316 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6317 obstack_1grow (&obstack, '\0');
6318 thrmod = XOBFINISH (&obstack, const char *);
6320 thrmod = thread_model;
6323 fnotice (file, "Thread model: %s\n", thrmod);
6325 /* compiler_version is truncated at the first space when initialized
6326 from version string, so truncate version_string at the first space
6327 before comparing. */
6328 for (n = 0; version_string[n]; n++)
6329 if (version_string[n] == ' ')
6332 if (! strncmp (version_string, compiler_version, n)
6333 && compiler_version[n] == 0)
6334 fnotice (file, "gcc version %s %s\n\n", version_string,
6337 fnotice (file, "gcc driver version %s %sexecuting gcc version %s\n\n",
6338 version_string, pkgversion_string, compiler_version);
6342 #define RETRY_ICE_ATTEMPTS 3
6344 /* Returns true if FILE1 and FILE2 contain equivalent data, 0 otherwise. */
6347 files_equal_p (char *file1, char *file2)
6349 struct stat st1, st2;
6352 const int bufsize = 8192;
6353 char *buf = XNEWVEC (char, bufsize);
6355 fd1 = open (file1, O_RDONLY);
6356 fd2 = open (file2, O_RDONLY);
6358 if (fd1 < 0 || fd2 < 0)
6361 if (fstat (fd1, &st1) < 0 || fstat (fd2, &st2) < 0)
6364 if (st1.st_size != st2.st_size)
6367 for (n = st1.st_size; n; n -= len)
6370 if ((int) len > bufsize / 2)
6373 if (read (fd1, buf, len) != (int) len
6374 || read (fd2, buf + bufsize / 2, len) != (int) len)
6379 if (memcmp (buf, buf + bufsize / 2, len) != 0)
6396 /* Check that compiler's output doesn't differ across runs.
6397 TEMP_STDOUT_FILES and TEMP_STDERR_FILES are arrays of files, containing
6398 stdout and stderr for each compiler run. Return true if all of
6399 TEMP_STDOUT_FILES and TEMP_STDERR_FILES are equivalent. */
6402 check_repro (char **temp_stdout_files, char **temp_stderr_files)
6405 for (i = 0; i < RETRY_ICE_ATTEMPTS - 2; ++i)
6407 if (!files_equal_p (temp_stdout_files[i], temp_stdout_files[i + 1])
6408 || !files_equal_p (temp_stderr_files[i], temp_stderr_files[i + 1]))
6410 fnotice (stderr, "The bug is not reproducible, so it is"
6411 " likely a hardware or OS problem.\n");
6415 return i == RETRY_ICE_ATTEMPTS - 2;
6418 enum attempt_status {
6419 ATTEMPT_STATUS_FAIL_TO_RUN,
6420 ATTEMPT_STATUS_SUCCESS,
6425 /* Run compiler with arguments NEW_ARGV to reproduce the ICE, storing stdout
6426 to OUT_TEMP and stderr to ERR_TEMP. If APPEND is TRUE, append to OUT_TEMP
6427 and ERR_TEMP instead of truncating. If EMIT_SYSTEM_INFO is TRUE, also write
6428 GCC configuration into to ERR_TEMP. Return ATTEMPT_STATUS_FAIL_TO_RUN if
6429 compiler failed to run, ATTEMPT_STATUS_ICE if compiled ICE-ed and
6430 ATTEMPT_STATUS_SUCCESS otherwise. */
6432 static enum attempt_status
6433 run_attempt (const char **new_argv, const char *out_temp,
6434 const char *err_temp, int emit_system_info, int append)
6437 if (emit_system_info)
6439 FILE *file_out = fopen (err_temp, "a");
6440 print_configuration (file_out);
6446 struct pex_obj *pex;
6448 int pex_flags = PEX_USE_PIPES | PEX_LAST;
6449 enum attempt_status status = ATTEMPT_STATUS_FAIL_TO_RUN;
6452 pex_flags |= PEX_STDOUT_APPEND | PEX_STDERR_APPEND;
6454 pex = pex_init (PEX_USE_PIPES, new_argv[0], NULL);
6456 fatal_error ("pex_init failed: %m");
6458 errmsg = pex_run (pex, pex_flags, new_argv[0],
6459 CONST_CAST2 (char *const *, const char **, &new_argv[1]), out_temp,
6464 fatal_error (errmsg);
6468 pfatal_with_name (errmsg);
6472 if (!pex_get_status (pex, 1, &exit_status))
6475 switch (WEXITSTATUS (exit_status))
6478 status = ATTEMPT_STATUS_ICE;
6481 case SUCCESS_EXIT_CODE:
6482 status = ATTEMPT_STATUS_SUCCESS;
6494 /* This routine reads lines from IN file, adds C++ style comments
6495 at the begining of each line and writes result into OUT. */
6498 insert_comments (const char *file_in, const char *file_out)
6500 FILE *in = fopen (file_in, "rb");
6501 FILE *out = fopen (file_out, "wb");
6504 bool add_comment = true;
6505 while (fgets (line, sizeof (line), in))
6510 add_comment = strchr (line, '\n') != NULL;
6517 /* This routine adds preprocessed source code into the given ERR_FILE.
6518 To do this, it adds "-E" to NEW_ARGV and execute RUN_ATTEMPT routine to
6519 add information in report file. RUN_ATTEMPT should return
6520 ATTEMPT_STATUS_SUCCESS, in other case we cannot generate the report. */
6523 do_report_bug (const char **new_argv, const int nargs,
6524 char **out_file, char **err_file)
6527 int fd = open (*out_file, O_RDWR | O_APPEND);
6530 write (fd, "\n//", 3);
6531 for (i = 0; i < nargs; i++)
6534 write (fd, new_argv[i], strlen (new_argv[i]));
6536 write (fd, "\n\n", 2);
6538 new_argv[nargs] = "-E";
6539 new_argv[nargs + 1] = NULL;
6541 status = run_attempt (new_argv, *out_file, *err_file, 0, 1);
6543 if (status == ATTEMPT_STATUS_SUCCESS)
6545 fnotice (stderr, "Preprocessed source stored into %s file,"
6546 " please attach this to your bugreport.\n", *out_file);
6547 /* Make sure it is not deleted. */
6553 /* Try to reproduce ICE. If bug is reproducible, generate report .err file
6554 containing GCC configuration, backtrace, compiler's command line options
6555 and preprocessed source code. */
6558 try_generate_repro (const char **argv)
6560 int i, nargs, out_arg = -1, quiet = 0, attempt;
6561 const char **new_argv;
6562 char *temp_files[RETRY_ICE_ATTEMPTS * 2];
6563 char **temp_stdout_files = &temp_files[0];
6564 char **temp_stderr_files = &temp_files[RETRY_ICE_ATTEMPTS];
6566 if (gcc_input_filename == NULL || ! strcmp (gcc_input_filename, "-"))
6569 for (nargs = 0; argv[nargs] != NULL; ++nargs)
6570 /* Only retry compiler ICEs, not preprocessor ones. */
6571 if (! strcmp (argv[nargs], "-E"))
6573 else if (argv[nargs][0] == '-' && argv[nargs][1] == 'o')
6580 /* If the compiler is going to output any time information,
6581 it might varry between invocations. */
6582 else if (! strcmp (argv[nargs], "-quiet"))
6584 else if (! strcmp (argv[nargs], "-ftime-report"))
6587 if (out_arg == -1 || !quiet)
6590 memset (temp_files, '\0', sizeof (temp_files));
6591 new_argv = XALLOCAVEC (const char *, nargs + 4);
6592 memcpy (new_argv, argv, (nargs + 1) * sizeof (const char *));
6593 new_argv[nargs++] = "-frandom-seed=0";
6594 new_argv[nargs++] = "-fdump-noaddr";
6595 new_argv[nargs] = NULL;
6596 if (new_argv[out_arg][2] == '\0')
6597 new_argv[out_arg + 1] = "-";
6599 new_argv[out_arg] = "-o-";
6602 for (attempt = 0; attempt < RETRY_ICE_ATTEMPTS; ++attempt)
6604 int emit_system_info = 0;
6606 temp_stdout_files[attempt] = make_temp_file (".out");
6607 temp_stderr_files[attempt] = make_temp_file (".err");
6609 if (attempt == RETRY_ICE_ATTEMPTS - 1)
6612 emit_system_info = 1;
6615 status = run_attempt (new_argv, temp_stdout_files[attempt],
6616 temp_stderr_files[attempt], emit_system_info,
6619 if (status != ATTEMPT_STATUS_ICE)
6621 fnotice (stderr, "The bug is not reproducible, so it is"
6622 " likely a hardware or OS problem.\n");
6627 if (!check_repro (temp_stdout_files, temp_stderr_files))
6631 /* Insert commented out backtrace into report file. */
6632 char **stderr_commented = &temp_stdout_files[RETRY_ICE_ATTEMPTS - 1];
6633 insert_comments (temp_stderr_files[RETRY_ICE_ATTEMPTS - 1],
6636 /* In final attempt we append compiler options and preprocesssed code to last
6637 generated .out file with configuration and backtrace. */
6638 char **output = &temp_stdout_files[RETRY_ICE_ATTEMPTS - 1];
6639 do_report_bug (new_argv, nargs, stderr_commented, output);
6643 for (i = 0; i < RETRY_ICE_ATTEMPTS * 2; i++)
6646 unlink (temp_stdout_files[i]);
6647 free (temp_stdout_files[i]);
6651 /* Search for a file named NAME trying various prefixes including the
6652 user's -B prefix and some standard ones.
6653 Return the absolute file name found. If nothing is found, return NAME. */
6656 find_file (const char *name)
6658 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true);
6659 return newname ? newname : name;
6662 /* Determine whether a directory exists. If LINKER, return 0 for
6663 certain fixed names not needed by the linker. */
6666 is_directory (const char *path1, bool linker)
6673 /* Ensure the string ends with "/.". The resulting path will be a
6674 directory even if the given path is a symbolic link. */
6675 len1 = strlen (path1);
6676 path = (char *) alloca (3 + len1);
6677 memcpy (path, path1, len1);
6679 if (!IS_DIR_SEPARATOR (cp[-1]))
6680 *cp++ = DIR_SEPARATOR;
6684 /* Exclude directories that the linker is known to search. */
6686 && IS_DIR_SEPARATOR (path[0])
6688 && filename_ncmp (path + 1, "lib", 3) == 0)
6690 && filename_ncmp (path + 1, "usr", 3) == 0
6691 && IS_DIR_SEPARATOR (path[4])
6692 && filename_ncmp (path + 5, "lib", 3) == 0)))
6695 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
6698 /* Set up the various global variables to indicate that we're processing
6699 the input file named FILENAME. */
6702 set_input (const char *filename)
6706 gcc_input_filename = filename;
6707 input_filename_length = strlen (gcc_input_filename);
6708 input_basename = lbasename (gcc_input_filename);
6710 /* Find a suffix starting with the last period,
6711 and set basename_length to exclude that suffix. */
6712 basename_length = strlen (input_basename);
6713 suffixed_basename_length = basename_length;
6714 p = input_basename + basename_length;
6715 while (p != input_basename && *p != '.')
6717 if (*p == '.' && p != input_basename)
6719 basename_length = p - input_basename;
6720 input_suffix = p + 1;
6725 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
6726 we will need to do a stat on the gcc_input_filename. The
6727 INPUT_STAT_SET signals that the stat is needed. */
6731 /* On fatal signals, delete all the temporary files. */
6734 fatal_signal (int signum)
6736 signal (signum, SIG_DFL);
6737 delete_failure_queue ();
6738 delete_temp_files ();
6739 /* Get the same signal again, this time not handled,
6740 so its normal effect occurs. */
6741 kill (getpid (), signum);
6744 /* Compare the contents of the two files named CMPFILE[0] and
6745 CMPFILE[1]. Return zero if they're identical, nonzero
6749 compare_files (char *cmpfile[])
6752 FILE *temp[2] = { NULL, NULL };
6758 void *map[2] = { NULL, NULL };
6760 for (i = 0; i < 2; i++)
6764 if (stat (cmpfile[i], &st) < 0 || !S_ISREG (st.st_mode))
6766 error ("%s: could not determine length of compare-debug file %s",
6767 gcc_input_filename, cmpfile[i]);
6772 length[i] = st.st_size;
6775 if (!ret && length[0] != length[1])
6777 error ("%s: -fcompare-debug failure (length)", gcc_input_filename);
6782 for (i = 0; i < 2; i++)
6784 int fd = open (cmpfile[i], O_RDONLY);
6787 error ("%s: could not open compare-debug file %s",
6788 gcc_input_filename, cmpfile[i]);
6793 map[i] = mmap (NULL, length[i], PROT_READ, MAP_PRIVATE, fd, 0);
6796 if (map[i] == (void *) MAP_FAILED)
6805 if (memcmp (map[0], map[1], length[0]) != 0)
6807 error ("%s: -fcompare-debug failure", gcc_input_filename);
6812 for (i = 0; i < 2; i++)
6814 munmap ((caddr_t) map[i], length[i]);
6823 for (i = 0; i < 2; i++)
6825 temp[i] = fopen (cmpfile[i], "r");
6828 error ("%s: could not open compare-debug file %s",
6829 gcc_input_filename, cmpfile[i]);
6835 if (!ret && temp[0] && temp[1])
6839 c0 = fgetc (temp[0]);
6840 c1 = fgetc (temp[1]);
6844 error ("%s: -fcompare-debug failure",
6845 gcc_input_filename);
6854 for (i = 1; i >= 0; i--)
6863 /* The top-level "main" within the driver would be ~1000 lines long.
6864 This class breaks it up into smaller functions and contains some
6865 state shared by them. */
6870 int main (int argc, char **argv);
6873 void set_progname (const char *argv0) const;
6874 void expand_at_files (int *argc, char ***argv) const;
6875 void decode_argv (int argc, const char **argv);
6876 void global_initializations ();
6877 void build_multilib_strings () const;
6878 void set_up_specs () const;
6879 void putenv_COLLECT_GCC (const char *argv0) const;
6880 void maybe_putenv_COLLECT_LTO_WRAPPER () const;
6881 void maybe_putenv_OFFLOAD_TARGETS () const;
6882 void handle_unrecognized_options () const;
6883 int maybe_print_and_exit () const;
6884 bool prepare_infiles ();
6885 void do_spec_on_infiles () const;
6886 void maybe_run_linker (const char *argv0) const;
6887 void final_actions () const;
6888 int get_exit_code () const;
6891 char *explicit_link_files;
6892 struct cl_decoded_option *decoded_options;
6893 unsigned int decoded_options_count;
6896 /* Implement the top-level "main" within the driver in terms of
6899 extern int main (int, char **);
6902 main (int argc, char **argv)
6906 return d.main (argc, argv);
6909 /* driver::main is implemented as a series of driver:: method calls. */
6912 driver::main (int argc, char **argv)
6916 set_progname (argv[0]);
6917 expand_at_files (&argc, &argv);
6918 decode_argv (argc, const_cast <const char **> (argv));
6919 global_initializations ();
6920 build_multilib_strings ();
6922 putenv_COLLECT_GCC (argv[0]);
6923 maybe_putenv_COLLECT_LTO_WRAPPER ();
6924 maybe_putenv_OFFLOAD_TARGETS ();
6925 handle_unrecognized_options ();
6927 if (!maybe_print_and_exit ())
6930 early_exit = prepare_infiles ();
6932 return get_exit_code ();
6934 do_spec_on_infiles ();
6935 maybe_run_linker (argv[0]);
6937 return get_exit_code ();
6940 /* Locate the final component of argv[0] after any leading path, and set
6941 the program name accordingly. */
6944 driver::set_progname (const char *argv0) const
6946 const char *p = argv0 + strlen (argv0);
6947 while (p != argv0 && !IS_DIR_SEPARATOR (p[-1]))
6951 xmalloc_set_program_name (progname);
6954 /* Expand any @ files within the command-line args,
6955 setting at_file_supplied if any were expanded. */
6958 driver::expand_at_files (int *argc, char ***argv) const
6960 char **old_argv = *argv;
6962 expandargv (argc, argv);
6964 /* Determine if any expansions were made. */
6965 if (*argv != old_argv)
6966 at_file_supplied = true;
6969 /* Decode the command-line arguments from argc/argv into the
6970 decoded_options array. */
6973 driver::decode_argv (int argc, const char **argv)
6975 /* Register the language-independent parameters. */
6976 global_init_params ();
6979 init_options_struct (&global_options, &global_options_set);
6981 decode_cmdline_options_to_array (argc, argv,
6983 &decoded_options, &decoded_options_count);
6986 /* Perform various initializations and setup. */
6989 driver::global_initializations ()
6991 /* Unlock the stdio streams. */
6992 unlock_std_streams ();
6994 gcc_init_libintl ();
6996 diagnostic_initialize (global_dc, 0);
6997 diagnostic_color_init (global_dc);
6999 #ifdef GCC_DRIVER_HOST_INITIALIZATION
7000 /* Perform host dependent initialization when needed. */
7001 GCC_DRIVER_HOST_INITIALIZATION;
7004 if (atexit (delete_temp_files) != 0)
7005 fatal_error ("atexit failed");
7007 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
7008 signal (SIGINT, fatal_signal);
7010 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
7011 signal (SIGHUP, fatal_signal);
7013 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
7014 signal (SIGTERM, fatal_signal);
7016 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
7017 signal (SIGPIPE, fatal_signal);
7020 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
7021 receive the signal. A different setting is inheritable */
7022 signal (SIGCHLD, SIG_DFL);
7025 /* Parsing and gimplification sometimes need quite large stack.
7026 Increase stack size limits if possible. */
7027 stack_limit_increase (64 * 1024 * 1024);
7029 /* Allocate the argument vector. */
7032 obstack_init (&obstack);
7035 /* Build multilib_select, et. al from the separate lines that make up each
7036 multilib selection. */
7039 driver::build_multilib_strings () const
7043 const char *const *q = multilib_raw;
7046 obstack_init (&multilib_obstack);
7047 while ((p = *q++) != (char *) 0)
7048 obstack_grow (&multilib_obstack, p, strlen (p));
7050 obstack_1grow (&multilib_obstack, 0);
7051 multilib_select = XOBFINISH (&multilib_obstack, const char *);
7053 q = multilib_matches_raw;
7054 while ((p = *q++) != (char *) 0)
7055 obstack_grow (&multilib_obstack, p, strlen (p));
7057 obstack_1grow (&multilib_obstack, 0);
7058 multilib_matches = XOBFINISH (&multilib_obstack, const char *);
7060 q = multilib_exclusions_raw;
7061 while ((p = *q++) != (char *) 0)
7062 obstack_grow (&multilib_obstack, p, strlen (p));
7064 obstack_1grow (&multilib_obstack, 0);
7065 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *);
7067 q = multilib_reuse_raw;
7068 while ((p = *q++) != (char *) 0)
7069 obstack_grow (&multilib_obstack, p, strlen (p));
7071 obstack_1grow (&multilib_obstack, 0);
7072 multilib_reuse = XOBFINISH (&multilib_obstack, const char *);
7075 for (size_t i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
7078 obstack_1grow (&multilib_obstack, ' ');
7079 obstack_grow (&multilib_obstack,
7080 multilib_defaults_raw[i],
7081 strlen (multilib_defaults_raw[i]));
7085 obstack_1grow (&multilib_obstack, 0);
7086 multilib_defaults = XOBFINISH (&multilib_obstack, const char *);
7090 /* Set up the spec-handling machinery. */
7093 driver::set_up_specs () const
7095 const char *spec_machine_suffix;
7099 #ifdef INIT_ENVIRONMENT
7100 /* Set up any other necessary machine specific environment variables. */
7101 xputenv (INIT_ENVIRONMENT);
7104 /* Make a table of what switches there are (switches, n_switches).
7105 Make a table of specified input files (infiles, n_infiles).
7106 Decode switches that are handled locally. */
7108 process_command (decoded_options_count, decoded_options);
7110 /* Initialize the vector of specs to just the default.
7111 This means one element containing 0s, as a terminator. */
7113 compilers = XNEWVAR (struct compiler, sizeof default_compilers);
7114 memcpy (compilers, default_compilers, sizeof default_compilers);
7115 n_compilers = n_default_compilers;
7117 /* Read specs from a file if there is one. */
7119 machine_suffix = concat (spec_host_machine, dir_separator_str, spec_version,
7120 accel_dir_suffix, dir_separator_str, NULL);
7121 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
7123 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true);
7124 /* Read the specs file unless it is a default one. */
7125 if (specs_file != 0 && strcmp (specs_file, "specs"))
7126 read_specs (specs_file, true, false);
7130 #ifdef ACCEL_COMPILER
7131 spec_machine_suffix = machine_suffix;
7133 spec_machine_suffix = just_machine_suffix;
7136 /* We need to check standard_exec_prefix/spec_machine_suffix/specs
7137 for any override of as, ld and libraries. */
7138 specs_file = (char *) alloca (strlen (standard_exec_prefix)
7139 + strlen (spec_machine_suffix) + sizeof ("specs"));
7140 strcpy (specs_file, standard_exec_prefix);
7141 strcat (specs_file, spec_machine_suffix);
7142 strcat (specs_file, "specs");
7143 if (access (specs_file, R_OK) == 0)
7144 read_specs (specs_file, true, false);
7146 /* Process any configure-time defaults specified for the command line
7147 options, via OPTION_DEFAULT_SPECS. */
7148 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
7149 do_option_spec (option_default_specs[i].name,
7150 option_default_specs[i].spec);
7152 /* Process DRIVER_SELF_SPECS, adding any new options to the end
7153 of the command line. */
7155 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
7156 do_self_spec (driver_self_specs[i]);
7158 /* If not cross-compiling, look for executables in the standard
7160 if (*cross_compile == '0')
7162 if (*md_exec_prefix)
7164 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
7165 PREFIX_PRIORITY_LAST, 0, 0);
7169 /* Process sysroot_suffix_spec. */
7170 if (*sysroot_suffix_spec != 0
7171 && !no_sysroot_suffix
7172 && do_spec_2 (sysroot_suffix_spec) == 0)
7174 if (argbuf.length () > 1)
7175 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
7176 else if (argbuf.length () == 1)
7177 target_sysroot_suffix = xstrdup (argbuf.last ());
7180 #ifdef HAVE_LD_SYSROOT
7181 /* Pass the --sysroot option to the linker, if it supports that. If
7182 there is a sysroot_suffix_spec, it has already been processed by
7183 this point, so target_system_root really is the system root we
7185 if (target_system_root)
7187 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
7188 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
7189 set_spec ("link", XOBFINISH (&obstack, const char *), false);
7193 /* Process sysroot_hdrs_suffix_spec. */
7194 if (*sysroot_hdrs_suffix_spec != 0
7195 && !no_sysroot_suffix
7196 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
7198 if (argbuf.length () > 1)
7199 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
7200 else if (argbuf.length () == 1)
7201 target_sysroot_hdrs_suffix = xstrdup (argbuf.last ());
7204 /* Look for startfiles in the standard places. */
7205 if (*startfile_prefix_spec != 0
7206 && do_spec_2 (startfile_prefix_spec) == 0
7207 && do_spec_1 (" ", 0, NULL) == 0)
7211 FOR_EACH_VEC_ELT (argbuf, ndx, arg)
7212 add_sysrooted_prefix (&startfile_prefixes, arg, "BINUTILS",
7213 PREFIX_PRIORITY_LAST, 0, 1);
7215 /* We should eventually get rid of all these and stick to
7216 startfile_prefix_spec exclusively. */
7217 else if (*cross_compile == '0' || target_system_root)
7219 if (*md_startfile_prefix)
7220 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
7221 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
7223 if (*md_startfile_prefix_1)
7224 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
7225 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
7227 /* If standard_startfile_prefix is relative, base it on
7228 standard_exec_prefix. This lets us move the installed tree
7229 as a unit. If GCC_EXEC_PREFIX is defined, base
7230 standard_startfile_prefix on that as well.
7232 If the prefix is relative, only search it for native compilers;
7233 otherwise we will search a directory containing host libraries. */
7234 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
7235 add_sysrooted_prefix (&startfile_prefixes,
7236 standard_startfile_prefix, "BINUTILS",
7237 PREFIX_PRIORITY_LAST, 0, 1);
7238 else if (*cross_compile == '0')
7240 add_prefix (&startfile_prefixes,
7241 concat (gcc_exec_prefix
7242 ? gcc_exec_prefix : standard_exec_prefix,
7244 standard_startfile_prefix, NULL),
7245 NULL, PREFIX_PRIORITY_LAST, 0, 1);
7248 /* Sysrooted prefixes are relocated because target_system_root is
7249 also relocated by gcc_exec_prefix. */
7250 if (*standard_startfile_prefix_1)
7251 add_sysrooted_prefix (&startfile_prefixes,
7252 standard_startfile_prefix_1, "BINUTILS",
7253 PREFIX_PRIORITY_LAST, 0, 1);
7254 if (*standard_startfile_prefix_2)
7255 add_sysrooted_prefix (&startfile_prefixes,
7256 standard_startfile_prefix_2, "BINUTILS",
7257 PREFIX_PRIORITY_LAST, 0, 1);
7260 /* Process any user specified specs in the order given on the command
7262 for (struct user_specs *uptr = user_specs_head; uptr; uptr = uptr->next)
7264 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
7266 read_specs (filename ? filename : uptr->filename, false, true);
7269 /* Process any user self specs. */
7271 struct spec_list *sl;
7272 for (sl = specs; sl; sl = sl->next)
7273 if (sl->name_len == sizeof "self_spec" - 1
7274 && !strcmp (sl->name, "self_spec"))
7275 do_self_spec (*sl->ptr_spec);
7280 enum save_temps save;
7282 if (!compare_debug_second)
7284 n_switches_debug_check[1] = n_switches;
7285 n_switches_alloc_debug_check[1] = n_switches_alloc;
7286 switches_debug_check[1] = XDUPVEC (struct switchstr, switches,
7289 do_self_spec ("%:compare-debug-self-opt()");
7290 n_switches_debug_check[0] = n_switches;
7291 n_switches_alloc_debug_check[0] = n_switches_alloc;
7292 switches_debug_check[0] = switches;
7294 n_switches = n_switches_debug_check[1];
7295 n_switches_alloc = n_switches_alloc_debug_check[1];
7296 switches = switches_debug_check[1];
7299 /* Avoid crash when computing %j in this early. */
7300 save = save_temps_flag;
7301 save_temps_flag = SAVE_TEMPS_NONE;
7303 compare_debug = -compare_debug;
7304 do_self_spec ("%:compare-debug-self-opt()");
7306 save_temps_flag = save;
7308 if (!compare_debug_second)
7310 n_switches_debug_check[1] = n_switches;
7311 n_switches_alloc_debug_check[1] = n_switches_alloc;
7312 switches_debug_check[1] = switches;
7313 compare_debug = -compare_debug;
7314 n_switches = n_switches_debug_check[0];
7315 n_switches_alloc = n_switches_debug_check[0];
7316 switches = switches_debug_check[0];
7321 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
7322 if (gcc_exec_prefix)
7323 gcc_exec_prefix = concat (gcc_exec_prefix, spec_host_machine,
7324 dir_separator_str, spec_version,
7325 accel_dir_suffix, dir_separator_str, NULL);
7327 /* Now we have the specs.
7328 Set the `valid' bits for switches that match anything in any spec. */
7330 validate_all_switches ();
7332 /* Now that we have the switches and the specs, set
7333 the subdirectory based on the options. */
7334 set_multilib_dir ();
7337 /* Set up to remember the pathname of gcc and any options
7338 needed for collect. We use argv[0] instead of progname because
7339 we need the complete pathname. */
7342 driver::putenv_COLLECT_GCC (const char *argv0) const
7344 obstack_init (&collect_obstack);
7345 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
7346 obstack_grow (&collect_obstack, argv0, strlen (argv0) + 1);
7347 xputenv (XOBFINISH (&collect_obstack, char *));
7350 /* Set up to remember the pathname of the lto wrapper. */
7353 driver::maybe_putenv_COLLECT_LTO_WRAPPER () const
7355 char *lto_wrapper_file;
7358 lto_wrapper_file = NULL;
7360 lto_wrapper_file = find_a_file (&exec_prefixes, "lto-wrapper",
7362 if (lto_wrapper_file)
7364 lto_wrapper_file = convert_white_space (lto_wrapper_file);
7365 lto_wrapper_spec = lto_wrapper_file;
7366 obstack_init (&collect_obstack);
7367 obstack_grow (&collect_obstack, "COLLECT_LTO_WRAPPER=",
7368 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
7369 obstack_grow (&collect_obstack, lto_wrapper_spec,
7370 strlen (lto_wrapper_spec) + 1);
7371 xputenv (XOBFINISH (&collect_obstack, char *));
7376 /* Set up to remember the names of offload targets. */
7379 driver::maybe_putenv_OFFLOAD_TARGETS () const
7381 const char *targets = offload_targets;
7383 /* If no targets specified by -foffload, use all available targets. */
7385 targets = OFFLOAD_TARGETS;
7387 if (strlen (targets) > 0)
7389 obstack_grow (&collect_obstack, "OFFLOAD_TARGET_NAMES=",
7390 sizeof ("OFFLOAD_TARGET_NAMES=") - 1);
7391 obstack_grow (&collect_obstack, targets,
7392 strlen (targets) + 1);
7393 xputenv (XOBFINISH (&collect_obstack, char *));
7396 free (offload_targets);
7399 /* Reject switches that no pass was interested in. */
7402 driver::handle_unrecognized_options () const
7404 for (size_t i = 0; (int) i < n_switches; i++)
7405 if (! switches[i].validated)
7406 error ("unrecognized command line option %<-%s%>", switches[i].part1);
7409 /* Handle the various -print-* options, returning 0 if the driver
7410 should exit, or nonzero if the driver should continue. */
7413 driver::maybe_print_and_exit () const
7415 if (print_search_dirs)
7417 printf (_("install: %s%s\n"),
7418 gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
7419 gcc_exec_prefix ? "" : machine_suffix);
7420 printf (_("programs: %s\n"),
7421 build_search_list (&exec_prefixes, "", false, false));
7422 printf (_("libraries: %s\n"),
7423 build_search_list (&startfile_prefixes, "", false, true));
7427 if (print_file_name)
7429 printf ("%s\n", find_file (print_file_name));
7433 if (print_prog_name)
7435 if (use_ld != NULL && ! strcmp (print_prog_name, "ld"))
7437 /* Append USE_LD to to the default linker. */
7438 #ifdef DEFAULT_LINKER
7440 # ifdef HAVE_HOST_EXECUTABLE_SUFFIX
7441 int len = (sizeof (DEFAULT_LINKER)
7442 - sizeof (HOST_EXECUTABLE_SUFFIX));
7446 char *default_linker = xstrdup (DEFAULT_LINKER);
7447 /* Strip HOST_EXECUTABLE_SUFFIX if DEFAULT_LINKER contains
7448 HOST_EXECUTABLE_SUFFIX. */
7449 if (! strcmp (&default_linker[len], HOST_EXECUTABLE_SUFFIX))
7451 default_linker[len] = '\0';
7452 ld = concat (default_linker, use_ld,
7453 HOST_EXECUTABLE_SUFFIX, NULL);
7458 ld = concat (DEFAULT_LINKER, use_ld, NULL);
7459 if (access (ld, X_OK) == 0)
7461 printf ("%s\n", ld);
7465 print_prog_name = concat (print_prog_name, use_ld, NULL);
7467 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
7468 printf ("%s\n", (newname ? newname : print_prog_name));
7472 if (print_multi_lib)
7474 print_multilib_info ();
7478 if (print_multi_directory)
7480 if (multilib_dir == NULL)
7483 printf ("%s\n", multilib_dir);
7487 if (print_multiarch)
7489 if (multiarch_dir == NULL)
7492 printf ("%s\n", multiarch_dir);
7498 if (target_system_root)
7500 if (target_sysroot_suffix)
7501 printf ("%s%s\n", target_system_root, target_sysroot_suffix);
7503 printf ("%s\n", target_system_root);
7508 if (print_multi_os_directory)
7510 if (multilib_os_dir == NULL)
7513 printf ("%s\n", multilib_os_dir);
7517 if (print_sysroot_headers_suffix)
7519 if (*sysroot_hdrs_suffix_spec)
7521 printf("%s\n", (target_sysroot_hdrs_suffix
7522 ? target_sysroot_hdrs_suffix
7527 /* The error status indicates that only one set of fixed
7528 headers should be built. */
7529 fatal_error ("not configured with sysroot headers suffix");
7532 if (print_help_list)
7538 printf (_("\nFor bug reporting instructions, please see:\n"));
7539 printf ("%s.\n", bug_report_url);
7544 /* We do not exit here. Instead we have created a fake input file
7545 called 'help-dummy' which needs to be compiled, and we pass this
7546 on the various sub-processes, along with the --help switch.
7547 Ensure their output appears after ours. */
7548 fputc ('\n', stdout);
7554 printf (_("%s %s%s\n"), progname, pkgversion_string,
7556 printf ("Copyright %s 2015 Free Software Foundation, Inc.\n",
7558 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
7559 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
7564 /* We do not exit here. We use the same mechanism of --help to print
7565 the version of the sub-processes. */
7566 fputc ('\n', stdout);
7572 print_configuration (stderr);
7580 /* Figure out what to do with each input file.
7581 Return true if we need to exit early from "main", false otherwise. */
7584 driver::prepare_infiles ()
7587 int lang_n_infiles = 0;
7589 if (n_infiles == added_libraries)
7590 fatal_error ("no input files");
7593 /* Early exit needed from main. */
7596 /* Make a place to record the compiler output file names
7597 that correspond to the input files. */
7600 i += lang_specific_extra_outfiles;
7601 outfiles = XCNEWVEC (const char *, i);
7603 /* Record which files were specified explicitly as link input. */
7605 explicit_link_files = XCNEWVEC (char, n_infiles);
7607 combine_inputs = have_o || flag_wpa;
7609 for (i = 0; (int) i < n_infiles; i++)
7611 const char *name = infiles[i].name;
7612 struct compiler *compiler = lookup_compiler (name,
7614 infiles[i].language);
7616 if (compiler && !(compiler->combinable))
7617 combine_inputs = false;
7619 if (lang_n_infiles > 0 && compiler != input_file_compiler
7620 && infiles[i].language && infiles[i].language[0] != '*')
7621 infiles[i].incompiler = compiler;
7625 input_file_compiler = compiler;
7626 infiles[i].incompiler = compiler;
7630 /* Since there is no compiler for this input file, assume it is a
7632 explicit_link_files[i] = 1;
7633 infiles[i].incompiler = NULL;
7635 infiles[i].compiled = false;
7636 infiles[i].preprocessed = false;
7639 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1)
7640 fatal_error ("cannot specify -o with -c, -S or -E with multiple files");
7642 /* No early exit needed from main; we can continue. */
7646 /* Run the spec machinery on each input file. */
7649 driver::do_spec_on_infiles () const
7653 for (i = 0; (int) i < n_infiles; i++)
7655 int this_file_error = 0;
7657 /* Tell do_spec what to substitute for %i. */
7659 input_file_number = i;
7660 set_input (infiles[i].name);
7662 if (infiles[i].compiled)
7665 /* Use the same thing in %o, unless cp->spec says otherwise. */
7667 outfiles[i] = gcc_input_filename;
7669 /* Figure out which compiler from the file's suffix. */
7672 = lookup_compiler (infiles[i].name, input_filename_length,
7673 infiles[i].language);
7675 if (input_file_compiler)
7677 /* Ok, we found an applicable compiler. Run its spec. */
7679 if (input_file_compiler->spec[0] == '#')
7681 error ("%s: %s compiler not installed on this system",
7682 gcc_input_filename, &input_file_compiler->spec[1]);
7683 this_file_error = 1;
7691 free (debug_check_temp_file[0]);
7692 debug_check_temp_file[0] = NULL;
7694 free (debug_check_temp_file[1]);
7695 debug_check_temp_file[1] = NULL;
7698 value = do_spec (input_file_compiler->spec);
7699 infiles[i].compiled = true;
7701 this_file_error = 1;
7702 else if (compare_debug && debug_check_temp_file[0])
7705 inform (0, "recompiling with -fcompare-debug");
7707 compare_debug = -compare_debug;
7708 n_switches = n_switches_debug_check[1];
7709 n_switches_alloc = n_switches_alloc_debug_check[1];
7710 switches = switches_debug_check[1];
7712 value = do_spec (input_file_compiler->spec);
7714 compare_debug = -compare_debug;
7715 n_switches = n_switches_debug_check[0];
7716 n_switches_alloc = n_switches_alloc_debug_check[0];
7717 switches = switches_debug_check[0];
7721 error ("during -fcompare-debug recompilation");
7722 this_file_error = 1;
7725 gcc_assert (debug_check_temp_file[1]
7726 && filename_cmp (debug_check_temp_file[0],
7727 debug_check_temp_file[1]));
7730 inform (0, "comparing final insns dumps");
7732 if (compare_files (debug_check_temp_file))
7733 this_file_error = 1;
7738 free (debug_check_temp_file[0]);
7739 debug_check_temp_file[0] = NULL;
7741 free (debug_check_temp_file[1]);
7742 debug_check_temp_file[1] = NULL;
7747 /* If this file's name does not contain a recognized suffix,
7748 record it as explicit linker input. */
7751 explicit_link_files[i] = 1;
7753 /* Clear the delete-on-failure queue, deleting the files in it
7754 if this compilation failed. */
7756 if (this_file_error)
7758 delete_failure_queue ();
7761 /* If this compilation succeeded, don't delete those files later. */
7762 clear_failure_queue ();
7765 /* Reset the input file name to the first compile/object file name, for use
7766 with %b in LINK_SPEC. We use the first input file that we can find
7767 a compiler to compile it instead of using infiles.language since for
7768 languages other than C we use aliases that we then lookup later. */
7773 for (i = 0; i < n_infiles ; i++)
7774 if (infiles[i].incompiler
7775 || (infiles[i].language && infiles[i].language[0] != '*'))
7777 set_input (infiles[i].name);
7784 /* Make sure INPUT_FILE_NUMBER points to first available open
7786 input_file_number = n_infiles;
7787 if (lang_specific_pre_link ())
7792 /* If we have to run the linker, do it now. */
7795 driver::maybe_run_linker (const char *argv0) const
7798 int linker_was_run = 0;
7799 int num_linker_inputs;
7801 /* Determine if there are any linker input files. */
7802 num_linker_inputs = 0;
7803 for (i = 0; (int) i < n_infiles; i++)
7804 if (explicit_link_files[i] || outfiles[i] != NULL)
7805 num_linker_inputs++;
7807 /* Run ld to link all the compiler output files. */
7809 if (num_linker_inputs > 0 && !seen_error () && print_subprocess_help < 2)
7811 int tmp = execution_count;
7815 #if HAVE_LTO_PLUGIN > 0
7816 #if HAVE_LTO_PLUGIN == 2
7817 const char *fno_use_linker_plugin = "fno-use-linker-plugin";
7819 const char *fuse_linker_plugin = "fuse-linker-plugin";
7823 /* We'll use ld if we can't find collect2. */
7824 if (! strcmp (linker_name_spec, "collect2"))
7826 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false);
7828 linker_name_spec = "ld";
7831 #if HAVE_LTO_PLUGIN > 0
7832 #if HAVE_LTO_PLUGIN == 2
7833 if (!switch_matches (fno_use_linker_plugin,
7834 fno_use_linker_plugin
7835 + strlen (fno_use_linker_plugin), 0))
7837 if (switch_matches (fuse_linker_plugin,
7839 + strlen (fuse_linker_plugin), 0))
7842 char *temp_spec = find_a_file (&exec_prefixes,
7843 LTOPLUGINSONAME, R_OK,
7846 fatal_error ("-fuse-linker-plugin, but %s not found",
7848 linker_plugin_file_spec = convert_white_space (temp_spec);
7851 lto_gcc_spec = argv0;
7854 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
7856 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false);
7857 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true);
7859 if (print_subprocess_help == 1)
7861 printf (_("\nLinker options\n==============\n\n"));
7862 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
7863 " to the linker.\n\n"));
7866 int value = do_spec (link_command_spec);
7869 linker_was_run = (tmp != execution_count);
7872 /* If options said don't run linker,
7873 complain about input files to be given to the linker. */
7875 if (! linker_was_run && !seen_error ())
7876 for (i = 0; (int) i < n_infiles; i++)
7877 if (explicit_link_files[i]
7878 && !(infiles[i].language && infiles[i].language[0] == '*'))
7879 warning (0, "%s: linker input file unused because linking not done",
7883 /* The end of "main". */
7886 driver::final_actions () const
7888 /* Delete some or all of the temporary files we made. */
7891 delete_failure_queue ();
7892 delete_temp_files ();
7894 if (print_help_list)
7896 printf (("\nFor bug reporting instructions, please see:\n"));
7897 printf ("%s\n", bug_report_url);
7901 /* Determine what the exit code of the driver should be. */
7904 driver::get_exit_code () const
7906 return (signal_count != 0 ? 2
7907 : seen_error () ? (pass_exit_codes ? greatest_status : 1)
7911 /* Find the proper compilation spec for the file name NAME,
7912 whose length is LENGTH. LANGUAGE is the specified language,
7913 or 0 if this file is to be passed to the linker. */
7915 static struct compiler *
7916 lookup_compiler (const char *name, size_t length, const char *language)
7918 struct compiler *cp;
7920 /* If this was specified by the user to be a linker input, indicate that. */
7921 if (language != 0 && language[0] == '*')
7924 /* Otherwise, look for the language, if one is spec'd. */
7927 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
7928 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
7931 error ("language %s not recognized", language);
7935 /* Look for a suffix. */
7936 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
7938 if (/* The suffix `-' matches only the file name `-'. */
7939 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
7940 || (strlen (cp->suffix) < length
7941 /* See if the suffix matches the end of NAME. */
7942 && !strcmp (cp->suffix,
7943 name + length - strlen (cp->suffix))
7948 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
7949 /* Look again, but case-insensitively this time. */
7951 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
7953 if (/* The suffix `-' matches only the file name `-'. */
7954 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
7955 || (strlen (cp->suffix) < length
7956 /* See if the suffix matches the end of NAME. */
7957 && ((!strcmp (cp->suffix,
7958 name + length - strlen (cp->suffix))
7959 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
7960 && !strcasecmp (cp->suffix,
7961 name + length - strlen (cp->suffix)))
7967 if (cp >= compilers)
7969 if (cp->spec[0] != '@')
7970 /* A non-alias entry: return it. */
7973 /* An alias entry maps a suffix to a language.
7974 Search for the language; pass 0 for NAME and LENGTH
7975 to avoid infinite recursion if language not found. */
7976 return lookup_compiler (NULL, 0, cp->spec + 1);
7982 save_string (const char *s, int len)
7984 char *result = XNEWVEC (char, len + 1);
7986 memcpy (result, s, len);
7992 pfatal_with_name (const char *name)
7994 perror_with_name (name);
7995 delete_temp_files ();
8000 perror_with_name (const char *name)
8002 error ("%s: %m", name);
8006 validate_switches_from_spec (const char *spec, bool user)
8008 const char *p = spec;
8011 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
8012 /* We have a switch spec. */
8013 p = validate_switches (p + 1, user);
8017 validate_all_switches (void)
8019 struct compiler *comp;
8020 struct spec_list *spec;
8022 for (comp = compilers; comp->spec; comp++)
8023 validate_switches_from_spec (comp->spec, false);
8025 /* Look through the linked list of specs read from the specs file. */
8026 for (spec = specs; spec; spec = spec->next)
8027 validate_switches_from_spec (*spec->ptr_spec, spec->user_p);
8029 validate_switches_from_spec (link_command_spec, false);
8032 /* Look at the switch-name that comes after START
8033 and mark as valid all supplied switches that match it. */
8036 validate_switches (const char *start, bool user_spec)
8038 const char *p = start;
8042 bool suffix = false;
8043 bool starred = false;
8045 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
8054 if (*p == '.' || *p == ',')
8058 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
8059 || *p == ',' || *p == '.' || *p == '@')
8064 starred = true, p++;
8070 /* Mark all matching switches as valid. */
8071 for (i = 0; i < n_switches; i++)
8072 if (!strncmp (switches[i].part1, atom, len)
8073 && (starred || switches[i].part1[len] == '\0')
8074 && (switches[i].known || user_spec))
8075 switches[i].validated = true;
8079 if (*p && (p[-1] == '|' || p[-1] == '&'))
8082 if (*p && p[-1] == ':')
8084 while (*p && *p != ';' && *p != '}')
8089 if (*p == '{' || *p == '<')
8090 p = validate_switches (p+1, user_spec);
8091 else if (p[0] == 'W' && p[1] == '{')
8092 p = validate_switches (p+2, user_spec);
8099 if (*p && p[-1] == ';')
8113 static struct mdswitchstr *mdswitches;
8114 static int n_mdswitches;
8116 /* Check whether a particular argument was used. The first time we
8117 canonicalize the switches to keep only the ones we care about. */
8120 used_arg (const char *p, int len)
8125 const char *replace;
8130 static struct mswitchstr *mswitches;
8131 static int n_mswitches;
8136 struct mswitchstr *matches;
8140 /* Break multilib_matches into the component strings of string
8141 and replacement string. */
8142 for (q = multilib_matches; *q != '\0'; q++)
8147 = (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
8149 q = multilib_matches;
8158 fatal_error ("multilib spec %qs is invalid",
8163 matches[i].len = q - matches[i].str;
8165 matches[i].replace = ++q;
8166 while (*q != ';' && *q != '\0')
8169 goto invalid_matches;
8172 matches[i].rep_len = q - matches[i].replace;
8178 /* Now build a list of the replacement string for switches that we care
8179 about. Make sure we allocate at least one entry. This prevents
8180 xmalloc from calling fatal, and prevents us from re-executing this
8183 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1));
8184 for (i = 0; i < n_switches; i++)
8185 if ((switches[i].live_cond & SWITCH_IGNORE) == 0)
8187 int xlen = strlen (switches[i].part1);
8188 for (j = 0; j < cnt; j++)
8189 if (xlen == matches[j].len
8190 && ! strncmp (switches[i].part1, matches[j].str, xlen))
8192 mswitches[n_mswitches].str = matches[j].replace;
8193 mswitches[n_mswitches].len = matches[j].rep_len;
8194 mswitches[n_mswitches].replace = (char *) 0;
8195 mswitches[n_mswitches].rep_len = 0;
8201 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
8202 on the command line nor any options mutually incompatible with
8204 for (i = 0; i < n_mdswitches; i++)
8208 for (q = multilib_options; *q != '\0'; *q && q++)
8214 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
8215 || strchr (" /", q[mdswitches[i].len]) == NULL)
8217 while (*q != ' ' && *q != '/' && *q != '\0')
8224 if (*q != ' ' && *q != '\0')
8226 while (*r != ' ' && *r != '\0')
8229 while (*q != ' ' && *q != '/' && *q != '\0')
8232 if (used_arg (r, q - r))
8237 mswitches[n_mswitches].str = mdswitches[i].str;
8238 mswitches[n_mswitches].len = mdswitches[i].len;
8239 mswitches[n_mswitches].replace = (char *) 0;
8240 mswitches[n_mswitches].rep_len = 0;
8253 for (i = 0; i < n_mswitches; i++)
8254 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
8261 default_arg (const char *p, int len)
8265 for (i = 0; i < n_mdswitches; i++)
8266 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
8272 /* Work out the subdirectory to use based on the options. The format of
8273 multilib_select is a list of elements. Each element is a subdirectory
8274 name followed by a list of options followed by a semicolon. The format
8275 of multilib_exclusions is the same, but without the preceding
8276 directory. First gcc will check the exclusions, if none of the options
8277 beginning with an exclamation point are present, and all of the other
8278 options are present, then we will ignore this completely. Passing
8279 that, gcc will consider each multilib_select in turn using the same
8280 rules for matching the options. If a match is found, that subdirectory
8282 A subdirectory name is optionally followed by a colon and the corresponding
8286 set_multilib_dir (void)
8289 unsigned int this_path_len;
8290 const char *this_path, *this_arg;
8291 const char *start, *end;
8293 int ok, ndfltok, first;
8296 start = multilib_defaults;
8297 while (*start == ' ' || *start == '\t')
8299 while (*start != '\0')
8302 while (*start != ' ' && *start != '\t' && *start != '\0')
8304 while (*start == ' ' || *start == '\t')
8312 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches);
8313 for (start = multilib_defaults; *start != '\0'; start = end + 1)
8315 while (*start == ' ' || *start == '\t')
8321 for (end = start + 1;
8322 *end != ' ' && *end != '\t' && *end != '\0'; end++)
8325 obstack_grow (&multilib_obstack, start, end - start);
8326 obstack_1grow (&multilib_obstack, 0);
8327 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *);
8328 mdswitches[i++].len = end - start;
8335 p = multilib_exclusions;
8338 /* Ignore newlines. */
8345 /* Check the arguments. */
8352 fatal_error ("multilib exclusions %qs is invalid",
8353 multilib_exclusions);
8363 while (*p != ' ' && *p != ';')
8366 goto invalid_exclusions;
8370 if (*this_arg != '!')
8378 ok = used_arg (this_arg, p - this_arg);
8393 p = multilib_select;
8395 /* Append multilib reuse rules if any. With those rules, we can reuse
8396 one multilib for certain different options sets. */
8397 if (strlen (multilib_reuse) > 0)
8398 p = concat (p, multilib_reuse, NULL);
8402 /* Ignore newlines. */
8409 /* Get the initial path. */
8416 fatal_error ("multilib select %qs %qs is invalid",
8417 multilib_select, multilib_reuse);
8421 this_path_len = p - this_path;
8423 /* Check the arguments. */
8430 goto invalid_select;
8439 while (*p != ' ' && *p != ';')
8442 goto invalid_select;
8446 if (*this_arg != '!')
8454 /* If this is a default argument, we can just ignore it.
8455 This is true even if this_arg begins with '!'. Beginning
8456 with '!' does not mean that this argument is necessarily
8457 inappropriate for this library: it merely means that
8458 there is a more specific library which uses this
8459 argument. If this argument is a default, we need not
8460 consider that more specific library. */
8461 ok = used_arg (this_arg, p - this_arg);
8468 if (default_arg (this_arg, p - this_arg))
8477 if (this_path_len != 1
8478 || this_path[0] != '.')
8480 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1);
8483 strncpy (new_multilib_dir, this_path, this_path_len);
8484 new_multilib_dir[this_path_len] = '\0';
8485 q = strchr (new_multilib_dir, ':');
8488 multilib_dir = new_multilib_dir;
8495 const char *q = this_path, *end = this_path + this_path_len;
8497 while (q < end && *q != ':')
8501 const char *q2 = q + 1, *ml_end = end;
8502 char *new_multilib_os_dir;
8504 while (q2 < end && *q2 != ':')
8508 if (ml_end - q == 1)
8509 multilib_os_dir = xstrdup (".");
8512 new_multilib_os_dir = XNEWVEC (char, ml_end - q);
8513 memcpy (new_multilib_os_dir, q + 1, ml_end - q - 1);
8514 new_multilib_os_dir[ml_end - q - 1] = '\0';
8515 multilib_os_dir = new_multilib_os_dir;
8518 if (q2 < end && *q2 == ':')
8520 char *new_multiarch_dir = XNEWVEC (char, end - q2);
8521 memcpy (new_multiarch_dir, q2 + 1, end - q2 - 1);
8522 new_multiarch_dir[end - q2 - 1] = '\0';
8523 multiarch_dir = new_multiarch_dir;
8532 if (multilib_dir == NULL && multilib_os_dir != NULL
8533 && strcmp (multilib_os_dir, ".") == 0)
8535 free (CONST_CAST (char *, multilib_os_dir));
8536 multilib_os_dir = NULL;
8538 else if (multilib_dir != NULL && multilib_os_dir == NULL)
8539 multilib_os_dir = multilib_dir;
8542 /* Print out the multiple library subdirectory selection
8543 information. This prints out a series of lines. Each line looks
8544 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
8545 required. Only the desired options are printed out, the negative
8546 matches. The options are print without a leading dash. There are
8547 no spaces to make it easy to use the information in the shell.
8548 Each subdirectory is printed only once. This assumes the ordering
8549 generated by the genmultilib script. Also, we leave out ones that match
8553 print_multilib_info (void)
8555 const char *p = multilib_select;
8556 const char *last_path = 0, *this_path;
8558 unsigned int last_path_len = 0;
8563 /* Ignore newlines. */
8570 /* Get the initial path. */
8577 fatal_error ("multilib select %qs is invalid", multilib_select);
8583 /* When --disable-multilib was used but target defines
8584 MULTILIB_OSDIRNAMES, entries starting with .: (and not starting
8585 with .:: for multiarch configurations) are there just to find
8586 multilib_os_dir, so skip them from output. */
8587 if (this_path[0] == '.' && this_path[1] == ':' && this_path[2] != ':')
8590 /* Check for matches with the multilib_exclusions. We don't bother
8591 with the '!' in either list. If any of the exclusion rules match
8592 all of its options with the select rule, we skip it. */
8594 const char *e = multilib_exclusions;
8595 const char *this_arg;
8600 /* Ignore newlines. */
8607 /* Check the arguments. */
8616 fatal_error ("multilib exclusion %qs is invalid",
8617 multilib_exclusions);
8628 while (*e != ' ' && *e != ';')
8631 goto invalid_exclusion;
8639 int len = e - this_arg;
8642 goto invalid_select;
8646 while (*q != ' ' && *q != ';')
8649 goto invalid_select;
8653 if (! strncmp (arg, this_arg,
8654 (len < q - arg) ? q - arg : len)
8655 || default_arg (this_arg, e - this_arg))
8685 /* If this is a duplicate, skip it. */
8686 skip = (last_path != 0
8687 && (unsigned int) (p - this_path) == last_path_len
8688 && ! filename_ncmp (last_path, this_path, last_path_len));
8690 last_path = this_path;
8691 last_path_len = p - this_path;
8694 /* If this directory requires any default arguments, we can skip
8695 it. We will already have printed a directory identical to
8696 this one which does not require that default argument. */
8707 goto invalid_select;
8714 while (*q != ' ' && *q != ';')
8717 goto invalid_select;
8722 && default_arg (arg, q - arg))
8737 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
8748 goto invalid_select;
8756 use_arg = *p != '!';
8761 while (*p != ' ' && *p != ';')
8764 goto invalid_select;
8776 /* If there are extra options, print them now. */
8777 if (multilib_extra && *multilib_extra)
8779 int print_at = TRUE;
8782 for (q = multilib_extra; *q != '\0'; q++)
8803 /* getenv built-in spec function.
8805 Returns the value of the environment variable given by its first
8806 argument, concatenated with the second argument. If the
8807 environment variable is not defined, a fatal error is issued. */
8810 getenv_spec_function (int argc, const char **argv)
8820 value = getenv (argv[0]);
8822 fatal_error ("environment variable %qs not defined", argv[0]);
8824 /* We have to escape every character of the environment variable so
8825 they are not interpreted as active spec characters. A
8826 particularly painful case is when we are reading a variable
8827 holding a windows path complete with \ separators. */
8828 len = strlen (value) * 2 + strlen (argv[1]) + 1;
8829 result = XNEWVAR (char, len);
8830 for (ptr = result; *value; ptr += 2)
8836 strcpy (ptr, argv[1]);
8841 /* if-exists built-in spec function.
8843 Checks to see if the file specified by the absolute pathname in
8844 ARGS exists. Returns that pathname if found.
8846 The usual use for this function is to check for a library file
8847 (whose name has been expanded with %s). */
8850 if_exists_spec_function (int argc, const char **argv)
8852 /* Must have only one argument. */
8853 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
8859 /* if-exists-else built-in spec function.
8861 This is like if-exists, but takes an additional argument which
8862 is returned if the first argument does not exist. */
8865 if_exists_else_spec_function (int argc, const char **argv)
8867 /* Must have exactly two arguments. */
8871 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
8877 /* sanitize built-in spec function.
8879 This returns non-NULL, if sanitizing address, thread or
8880 any of the undefined behavior sanitizers. */
8883 sanitize_spec_function (int argc, const char **argv)
8888 if (strcmp (argv[0], "address") == 0)
8889 return (flag_sanitize & SANITIZE_USER_ADDRESS) ? "" : NULL;
8890 if (strcmp (argv[0], "kernel-address") == 0)
8891 return (flag_sanitize & SANITIZE_KERNEL_ADDRESS) ? "" : NULL;
8892 if (strcmp (argv[0], "thread") == 0)
8893 return (flag_sanitize & SANITIZE_THREAD) ? "" : NULL;
8894 if (strcmp (argv[0], "undefined") == 0)
8895 return ((flag_sanitize & (SANITIZE_UNDEFINED | SANITIZE_NONDEFAULT))
8896 && !flag_sanitize_undefined_trap_on_error) ? "" : NULL;
8897 if (strcmp (argv[0], "leak") == 0)
8898 return ((flag_sanitize
8899 & (SANITIZE_ADDRESS | SANITIZE_LEAK | SANITIZE_THREAD))
8900 == SANITIZE_LEAK) ? "" : NULL;
8904 /* replace-outfile built-in spec function.
8906 This looks for the first argument in the outfiles array's name and
8907 replaces it with the second argument. */
8910 replace_outfile_spec_function (int argc, const char **argv)
8913 /* Must have exactly two arguments. */
8917 for (i = 0; i < n_infiles; i++)
8919 if (outfiles[i] && !filename_cmp (outfiles[i], argv[0]))
8920 outfiles[i] = xstrdup (argv[1]);
8925 /* remove-outfile built-in spec function.
8927 * This looks for the first argument in the outfiles array's name and
8931 remove_outfile_spec_function (int argc, const char **argv)
8934 /* Must have exactly one argument. */
8938 for (i = 0; i < n_infiles; i++)
8940 if (outfiles[i] && !filename_cmp (outfiles[i], argv[0]))
8946 /* Given two version numbers, compares the two numbers.
8947 A version number must match the regular expression
8948 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
8951 compare_version_strings (const char *v1, const char *v2)
8956 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
8957 REG_EXTENDED | REG_NOSUB) != 0)
8959 rresult = regexec (&r, v1, 0, NULL, 0);
8960 if (rresult == REG_NOMATCH)
8961 fatal_error ("invalid version number %qs", v1);
8962 else if (rresult != 0)
8964 rresult = regexec (&r, v2, 0, NULL, 0);
8965 if (rresult == REG_NOMATCH)
8966 fatal_error ("invalid version number %qs", v2);
8967 else if (rresult != 0)
8970 return strverscmp (v1, v2);
8974 /* version_compare built-in spec function.
8976 This takes an argument of the following form:
8978 <comparison-op> <arg1> [<arg2>] <switch> <result>
8980 and produces "result" if the comparison evaluates to true,
8981 and nothing if it doesn't.
8983 The supported <comparison-op> values are:
8985 >= true if switch is a later (or same) version than arg1
8987 < true if switch is an earlier version than arg1
8989 >< true if switch is arg1 or later, and earlier than arg2
8990 <> true if switch is earlier than arg1 or is arg2 or later
8992 If the switch is not present, the condition is false unless
8993 the first character of the <comparison-op> is '!'.
8996 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
8997 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
9000 version_compare_spec_function (int argc, const char **argv)
9004 const char *switch_value = NULL;
9009 fatal_error ("too few arguments to %%:version-compare");
9010 if (argv[0][0] == '\0')
9012 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!')
9014 if (argc != nargs + 3)
9015 fatal_error ("too many arguments to %%:version-compare");
9017 switch_len = strlen (argv[nargs + 1]);
9018 for (i = 0; i < n_switches; i++)
9019 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len)
9020 && check_live_switch (i, switch_len))
9021 switch_value = switches[i].part1 + switch_len;
9023 if (switch_value == NULL)
9027 comp1 = compare_version_strings (switch_value, argv[1]);
9029 comp2 = compare_version_strings (switch_value, argv[2]);
9031 comp2 = -1; /* This value unused. */
9034 switch (argv[0][0] << 8 | argv[0][1])
9036 case '>' << 8 | '=':
9037 result = comp1 >= 0;
9039 case '!' << 8 | '<':
9040 result = comp1 >= 0 || switch_value == NULL;
9045 case '!' << 8 | '>':
9046 result = comp1 < 0 || switch_value == NULL;
9048 case '>' << 8 | '<':
9049 result = comp1 >= 0 && comp2 < 0;
9051 case '<' << 8 | '>':
9052 result = comp1 < 0 || comp2 >= 0;
9056 fatal_error ("unknown operator %qs in %%:version-compare", argv[0]);
9061 return argv[nargs + 2];
9064 /* %:include builtin spec function. This differs from %include in that it
9065 can be nested inside a spec, and thus be conditionalized. It takes
9066 one argument, the filename, and looks for it in the startfile path.
9067 The result is always NULL, i.e. an empty expansion. */
9070 include_spec_function (int argc, const char **argv)
9077 file = find_a_file (&startfile_prefixes, argv[0], R_OK, true);
9078 read_specs (file ? file : argv[0], false, false);
9083 /* %:find-file spec function. This function replaces its argument by
9084 the file found through find_file, that is the -print-file-name gcc
9087 find_file_spec_function (int argc, const char **argv)
9094 file = find_file (argv[0]);
9099 /* %:find-plugindir spec function. This function replaces its argument
9100 by the -iplugindir=<dir> option. `dir' is found through find_file, that
9101 is the -print-file-name gcc program option. */
9103 find_plugindir_spec_function (int argc, const char **argv ATTRIBUTE_UNUSED)
9110 option = concat ("-iplugindir=", find_file ("plugin"), NULL);
9115 /* %:print-asm-header spec function. Print a banner to say that the
9116 following output is from the assembler. */
9119 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED,
9120 const char **argv ATTRIBUTE_UNUSED)
9122 printf (_("Assembler options\n=================\n\n"));
9123 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
9128 /* Get a random number for -frandom-seed */
9130 static unsigned HOST_WIDE_INT
9131 get_random_number (void)
9133 unsigned HOST_WIDE_INT ret = 0;
9136 fd = open ("/dev/urandom", O_RDONLY);
9139 read (fd, &ret, sizeof (HOST_WIDE_INT));
9145 /* Get some more or less random data. */
9146 #ifdef HAVE_GETTIMEOFDAY
9150 gettimeofday (&tv, NULL);
9151 ret = tv.tv_sec * 1000 + tv.tv_usec / 1000;
9155 time_t now = time (NULL);
9157 if (now != (time_t)-1)
9158 ret = (unsigned) now;
9162 return ret ^ getpid ();
9165 /* %:compare-debug-dump-opt spec function. Save the last argument,
9166 expected to be the last -fdump-final-insns option, or generate a
9170 compare_debug_dump_opt_spec_function (int arg,
9171 const char **argv ATTRIBUTE_UNUSED)
9176 static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3];
9179 fatal_error ("too many arguments to %%:compare-debug-dump-opt");
9181 do_spec_2 ("%{fdump-final-insns=*:%*}");
9182 do_spec_1 (" ", 0, NULL);
9184 if (argbuf.length () > 0
9185 && strcmp (argv[argbuf.length () - 1], "."))
9190 name = xstrdup (argv[argbuf.length () - 1]);
9195 const char *ext = NULL;
9197 if (argbuf.length () > 0)
9199 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
9202 else if (!compare_debug)
9205 do_spec_2 ("%g.gkd");
9207 do_spec_1 (" ", 0, NULL);
9209 gcc_assert (argbuf.length () > 0);
9211 name = concat (argbuf.last (), ext, NULL);
9213 ret = concat ("-fdump-final-insns=", name, NULL);
9216 which = compare_debug < 0;
9217 debug_check_temp_file[which] = name;
9221 unsigned HOST_WIDE_INT value = get_random_number ();
9223 sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value);
9229 ret = concat ("%{!frandom-seed=*:-frandom-seed=", random_seed, "} ",
9240 static const char *debug_auxbase_opt;
9242 /* %:compare-debug-self-opt spec function. Expands to the options
9243 that are to be passed in the second compilation of
9247 compare_debug_self_opt_spec_function (int arg,
9248 const char **argv ATTRIBUTE_UNUSED)
9251 fatal_error ("too many arguments to %%:compare-debug-self-opt");
9253 if (compare_debug >= 0)
9256 do_spec_2 ("%{c|S:%{o*:%*}}");
9257 do_spec_1 (" ", 0, NULL);
9259 if (argbuf.length () > 0)
9260 debug_auxbase_opt = concat ("-auxbase-strip ",
9264 debug_auxbase_opt = NULL;
9267 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
9268 %<fdump-final-insns=* -w -S -o %j \
9269 %{!fcompare-debug-second:-fcompare-debug-second} \
9270 ", compare_debug_opt, NULL);
9273 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
9274 options that are to be passed in the second compilation of
9275 compare-debug. It expects, as an argument, the basename of the
9276 current input file name, with the .gk suffix appended to it. */
9279 compare_debug_auxbase_opt_spec_function (int arg,
9286 fatal_error ("too few arguments to %%:compare-debug-auxbase-opt");
9289 fatal_error ("too many arguments to %%:compare-debug-auxbase-opt");
9291 if (compare_debug >= 0)
9294 len = strlen (argv[0]);
9295 if (len < 3 || strcmp (argv[0] + len - 3, ".gk") != 0)
9296 fatal_error ("argument to %%:compare-debug-auxbase-opt "
9297 "does not end in .gk");
9299 if (debug_auxbase_opt)
9300 return debug_auxbase_opt;
9302 #define OPT "-auxbase "
9305 name = (char*) xmalloc (sizeof (OPT) + len);
9306 memcpy (name, OPT, sizeof (OPT) - 1);
9307 memcpy (name + sizeof (OPT) - 1, argv[0], len);
9308 name[sizeof (OPT) - 1 + len] = '\0';
9315 /* %:pass-through-libs spec function. Finds all -l options and input
9316 file names in the lib spec passed to it, and makes a list of them
9317 prepended with the plugin option to cause them to be passed through
9318 to the final link after all the new object files have been added. */
9321 pass_through_libs_spec_func (int argc, const char **argv)
9323 char *prepended = xstrdup (" ");
9325 /* Shlemiel the painter's algorithm. Innately horrible, but at least
9326 we know that there will never be more than a handful of strings to
9327 concat, and it's only once per run, so it's not worth optimising. */
9328 for (n = 0; n < argc; n++)
9330 char *old = prepended;
9331 /* Anything that isn't an option is a full path to an output
9332 file; pass it through if it ends in '.a'. Among options,
9334 if (argv[n][0] == '-' && argv[n][1] == 'l')
9336 const char *lopt = argv[n] + 2;
9337 /* Handle both joined and non-joined -l options. If for any
9338 reason there's a trailing -l with no joined or following
9339 arg just discard it. */
9340 if (!*lopt && ++n >= argc)
9344 prepended = concat (prepended, "-plugin-opt=-pass-through=-l",
9347 else if (!strcmp (".a", argv[n] + strlen (argv[n]) - 2))
9349 prepended = concat (prepended, "-plugin-opt=-pass-through=",
9350 argv[n], " ", NULL);
9352 if (prepended != old)
9358 /* %:replace-extension spec function. Replaces the extension of the
9359 first argument with the second argument. */
9362 replace_extension_spec_func (int argc, const char **argv)
9370 fatal_error ("too few arguments to %%:replace-extension");
9372 name = xstrdup (argv[0]);
9374 for (i = strlen (name) - 1; i >= 0; i--)
9375 if (IS_DIR_SEPARATOR (name[i]))
9378 p = strrchr (name + i + 1, '.');
9382 result = concat (name, argv[1], NULL);
9388 /* Insert backslash before spaces in ORIG (usually a file path), to
9389 avoid being broken by spec parser.
9391 This function is needed as do_spec_1 treats white space (' ' and '\t')
9392 as the end of an argument. But in case of -plugin /usr/gcc install/xxx.so,
9393 the file name should be treated as a single argument rather than being
9394 broken into multiple. Solution is to insert '\\' before the space in a
9397 This function converts and only converts all occurrence of ' '
9398 to '\\' + ' ' and '\t' to '\\' + '\t'. For example:
9402 "a\\ b" -> "a\\\\ b"
9404 orig: input null-terminating string that was allocated by xalloc. The
9405 memory it points to might be freed in this function. Behavior undefined
9406 if ORIG wasn't xalloced or was freed already at entry.
9408 Return: ORIG if no conversion needed. Otherwise a newly allocated string
9409 that was converted from ORIG. */
9412 convert_white_space (char *orig)
9414 int len, number_of_space = 0;
9416 for (len = 0; orig[len]; len++)
9417 if (orig[len] == ' ' || orig[len] == '\t') number_of_space++;
9419 if (number_of_space)
9421 char *new_spec = (char *) xmalloc (len + number_of_space + 1);
9423 for (j = 0, k = 0; j <= len; j++, k++)
9425 if (orig[j] == ' ' || orig[j] == '\t')
9426 new_spec[k++] = '\\';
9427 new_spec[k] = orig[j];