1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987-2015 Free Software Foundation, Inc.
4 This file is part of GCC.
6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 3, or (at your option) any later
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING3. If not see
18 <http://www.gnu.org/licenses/>. */
20 /* This program is the user interface to the C compiler and possibly to
21 other compilers. It is used because compilation is a complicated procedure
22 which involves running several programs and passing temporary files between
23 them, forwarding the users switches to those programs selectively,
24 and deleting the temporary files at the end.
26 CC recognizes how to compile each input file by suffixes in the file names.
27 Once it knows which kind of compilation to perform, the procedure for
28 compilation is specified by a string called a "spec". */
32 #include "coretypes.h"
33 #include "multilib.h" /* before tm.h */
40 #include "diagnostic.h"
45 #include "filenames.h"
47 /* By default there is no special suffix for target executables. */
48 /* FIXME: when autoconf is fixed, remove the host check - dj */
49 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
50 #define HAVE_TARGET_EXECUTABLE_SUFFIX
53 /* By default there is no special suffix for host executables. */
54 #ifdef HOST_EXECUTABLE_SUFFIX
55 #define HAVE_HOST_EXECUTABLE_SUFFIX
57 #define HOST_EXECUTABLE_SUFFIX ""
60 /* By default, the suffix for target object files is ".o". */
61 #ifdef TARGET_OBJECT_SUFFIX
62 #define HAVE_TARGET_OBJECT_SUFFIX
64 #define TARGET_OBJECT_SUFFIX ".o"
67 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
69 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
70 #ifndef LIBRARY_PATH_ENV
71 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
74 /* If a stage of compilation returns an exit status >= 1,
75 compilation of that file ceases. */
77 #define MIN_FATAL_STATUS 1
79 /* Flag set by cppspec.c to 1. */
82 /* Flag set to nonzero if an @file argument has been supplied to gcc. */
83 static bool at_file_supplied;
85 /* Definition of string containing the arguments given to configure. */
86 #include "configargs.h"
88 /* Flag saying to print the command line options understood by gcc and its
91 static int print_help_list;
93 /* Flag saying to print the version of gcc and its sub-processes. */
95 static int print_version;
97 /* Flag indicating whether we should ONLY print the command and
98 arguments (like verbose_flag) without executing the command.
99 Displayed arguments are quoted so that the generated command
100 line is suitable for execution. This is intended for use in
101 shell scripts to capture the driver-generated command line. */
102 static int verbose_only_flag;
104 /* Flag indicating how to print command line options of sub-processes. */
106 static int print_subprocess_help;
108 /* Linker suffix passed to -fuse-ld=... */
109 static const char *use_ld;
111 /* Whether we should report subprocess execution times to a file. */
113 FILE *report_times_to_file = NULL;
115 /* Nonzero means place this string before uses of /, so that include
116 and library files can be found in an alternate location. */
118 #ifdef TARGET_SYSTEM_ROOT
119 static const char *target_system_root = TARGET_SYSTEM_ROOT;
121 static const char *target_system_root = 0;
124 /* Nonzero means pass the updated target_system_root to the compiler. */
126 static int target_system_root_changed;
128 /* Nonzero means append this string to target_system_root. */
130 static const char *target_sysroot_suffix = 0;
132 /* Nonzero means append this string to target_system_root for headers. */
134 static const char *target_sysroot_hdrs_suffix = 0;
136 /* Nonzero means write "temp" files in source directory
137 and use the source file's name in them, and don't delete them. */
139 static enum save_temps {
140 SAVE_TEMPS_NONE, /* no -save-temps */
141 SAVE_TEMPS_CWD, /* -save-temps in current directory */
142 SAVE_TEMPS_OBJ /* -save-temps in object directory */
145 /* Output file to use to get the object directory for -save-temps=obj */
146 static char *save_temps_prefix = 0;
147 static size_t save_temps_length = 0;
149 /* The compiler version. */
151 static const char *compiler_version;
153 /* The target version. */
155 static const char *const spec_version = DEFAULT_TARGET_VERSION;
157 /* The target machine. */
159 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
160 static const char *spec_host_machine = DEFAULT_REAL_TARGET_MACHINE;
162 /* List of offload targets. */
164 static char *offload_targets = NULL;
166 /* Nonzero if cross-compiling.
167 When -b is used, the value comes from the `specs' file. */
169 #ifdef CROSS_DIRECTORY_STRUCTURE
170 static const char *cross_compile = "1";
172 static const char *cross_compile = "0";
175 /* Greatest exit code of sub-processes that has been encountered up to
177 static int greatest_status = 1;
179 /* This is the obstack which we use to allocate many strings. */
181 static struct obstack obstack;
183 /* This is the obstack to build an environment variable to pass to
184 collect2 that describes all of the relevant switches of what to
185 pass the compiler in building the list of pointers to constructors
188 static struct obstack collect_obstack;
190 /* Forward declaration for prototypes. */
194 static void init_spec (void);
195 static void store_arg (const char *, int, int);
196 static void insert_wrapper (const char *);
197 static char *load_specs (const char *);
198 static void read_specs (const char *, bool, bool);
199 static void set_spec (const char *, const char *, bool);
200 static struct compiler *lookup_compiler (const char *, size_t, const char *);
201 static char *build_search_list (const struct path_prefix *, const char *,
203 static void xputenv (const char *);
204 static void putenv_from_prefixes (const struct path_prefix *, const char *,
206 static int access_check (const char *, int);
207 static char *find_a_file (const struct path_prefix *, const char *, int, bool);
208 static void add_prefix (struct path_prefix *, const char *, const char *,
210 static void add_sysrooted_prefix (struct path_prefix *, const char *,
211 const char *, int, int, int);
212 static char *skip_whitespace (char *);
213 static void delete_if_ordinary (const char *);
214 static void delete_temp_files (void);
215 static void delete_failure_queue (void);
216 static void clear_failure_queue (void);
217 static int check_live_switch (int, int);
218 static const char *handle_braces (const char *);
219 static inline bool input_suffix_matches (const char *, const char *);
220 static inline bool switch_matches (const char *, const char *, int);
221 static inline void mark_matching_switches (const char *, const char *, int);
222 static inline void process_marked_switches (void);
223 static const char *process_brace_body (const char *, const char *, const char *, int, int);
224 static const struct spec_function *lookup_spec_function (const char *);
225 static const char *eval_spec_function (const char *, const char *);
226 static const char *handle_spec_function (const char *, bool *);
227 static char *save_string (const char *, int);
228 static void set_collect_gcc_options (void);
229 static int do_spec_1 (const char *, int, const char *);
230 static int do_spec_2 (const char *);
231 static void do_option_spec (const char *, const char *);
232 static void do_self_spec (const char *);
233 static const char *find_file (const char *);
234 static int is_directory (const char *, bool);
235 static const char *validate_switches (const char *, bool);
236 static void validate_all_switches (void);
237 static inline void validate_switches_from_spec (const char *, bool);
238 static void give_switch (int, int);
239 static int used_arg (const char *, int);
240 static int default_arg (const char *, int);
241 static void set_multilib_dir (void);
242 static void print_multilib_info (void);
243 static void perror_with_name (const char *);
244 static void display_help (void);
245 static void add_preprocessor_option (const char *, int);
246 static void add_assembler_option (const char *, int);
247 static void add_linker_option (const char *, int);
248 static void process_command (unsigned int, struct cl_decoded_option *);
249 static int execute (void);
250 static void alloc_args (void);
251 static void clear_args (void);
252 static void fatal_signal (int);
253 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
254 static void init_gcc_specs (struct obstack *, const char *, const char *,
257 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
258 static const char *convert_filename (const char *, int, int);
261 static void try_generate_repro (const char **argv);
262 static const char *getenv_spec_function (int, const char **);
263 static const char *if_exists_spec_function (int, const char **);
264 static const char *if_exists_else_spec_function (int, const char **);
265 static const char *sanitize_spec_function (int, const char **);
266 static const char *replace_outfile_spec_function (int, const char **);
267 static const char *remove_outfile_spec_function (int, const char **);
268 static const char *version_compare_spec_function (int, const char **);
269 static const char *include_spec_function (int, const char **);
270 static const char *find_file_spec_function (int, const char **);
271 static const char *find_plugindir_spec_function (int, const char **);
272 static const char *print_asm_header_spec_function (int, const char **);
273 static const char *compare_debug_dump_opt_spec_function (int, const char **);
274 static const char *compare_debug_self_opt_spec_function (int, const char **);
275 static const char *compare_debug_auxbase_opt_spec_function (int, const char **);
276 static const char *pass_through_libs_spec_func (int, const char **);
277 static const char *replace_extension_spec_func (int, const char **);
278 static char *convert_white_space (char *);
280 /* The Specs Language
282 Specs are strings containing lines, each of which (if not blank)
283 is made up of a program name, and arguments separated by spaces.
284 The program name must be exact and start from root, since no path
285 is searched and it is unreliable to depend on the current working directory.
286 Redirection of input or output is not supported; the subprograms must
287 accept filenames saying what files to read and write.
289 In addition, the specs can contain %-sequences to substitute variable text
290 or for conditional text. Here is a table of all defined %-sequences.
291 Note that spaces are not generated automatically around the results of
292 expanding these sequences; therefore, you can concatenate them together
293 or with constant text in a single argument.
295 %% substitute one % into the program name or argument.
296 %i substitute the name of the input file being processed.
297 %b substitute the basename of the input file being processed.
298 This is the substring up to (and not including) the last period
299 and not including the directory unless -save-temps was specified
300 to put temporaries in a different location.
301 %B same as %b, but include the file suffix (text after the last period).
303 substitute a file name that has suffix SUFFIX and is chosen
304 once per compilation, and mark the argument a la %d. To reduce
305 exposure to denial-of-service attacks, the file name is now
306 chosen in a way that is hard to predict even when previously
307 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
308 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
309 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
310 had been pre-processed. Previously, %g was simply substituted
311 with a file name chosen once per compilation, without regard
312 to any appended suffix (which was therefore treated just like
313 ordinary text), making such attacks more likely to succeed.
315 like %g, but if -pipe is in effect, expands simply to "-".
317 like %g, but if -pipe is in effect, expands to nothing. (We have both
318 %| and %m to accommodate differences between system assemblers; see
319 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
321 like %g, but generates a new temporary file name even if %uSUFFIX
324 substitutes the last file name generated with %uSUFFIX, generating a
325 new one if there is no such last file name. In the absence of any
326 %uSUFFIX, this is just like %gSUFFIX, except they don't share
327 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
328 would involve the generation of two distinct file names, one
329 for each `%g.s' and another for each `%U.s'. Previously, %U was
330 simply substituted with a file name chosen for the previous %u,
331 without regard to any appended suffix.
333 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
334 writable, and if save-temps is off; otherwise, substitute the name
335 of a temporary file, just like %u. This temporary file is not
336 meant for communication between processes, but rather as a junk
339 substitutes .SUFFIX for the suffixes of a matched switch's args when
340 it is subsequently output with %*. SUFFIX is terminated by the next
342 %d marks the argument containing or following the %d as a
343 temporary file name, so that that file will be deleted if GCC exits
344 successfully. Unlike %g, this contributes no text to the argument.
345 %w marks the argument containing or following the %w as the
346 "output file" of this compilation. This puts the argument
347 into the sequence of arguments that %o will substitute later.
348 %V indicates that this compilation produces no "output file".
350 like %{...} but mark last argument supplied within
351 as a file to be deleted on failure.
352 %o substitutes the names of all the output files, with spaces
353 automatically placed around them. You should write spaces
354 around the %o as well or the results are undefined.
355 %o is for use in the specs for running the linker.
356 Input files whose names have no recognized suffix are not compiled
357 at all, but they are included among the output files, so they will
359 %O substitutes the suffix for object files. Note that this is
360 handled specially when it immediately follows %g, %u, or %U
361 (with or without a suffix argument) because of the need for
362 those to form complete file names. The handling is such that
363 %O is treated exactly as if it had already been substituted,
364 except that %g, %u, and %U do not currently support additional
365 SUFFIX characters following %O as they would following, for
367 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
368 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
369 and -B options) and -imultilib as necessary.
370 %s current argument is the name of a library or startup file of some sort.
371 Search for that file in a standard list of directories
372 and substitute the full name found.
373 %eSTR Print STR as an error message. STR is terminated by a newline.
374 Use this when inconsistent options are detected.
375 %nSTR Print STR as a notice. STR is terminated by a newline.
376 %x{OPTION} Accumulate an option for %X.
377 %X Output the accumulated linker options specified by compilations.
378 %Y Output the accumulated assembler options specified by compilations.
379 %Z Output the accumulated preprocessor options specified by compilations.
380 %a process ASM_SPEC as a spec.
381 This allows config.h to specify part of the spec for running as.
382 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
383 used here. This can be used to run a post-processor after the
384 assembler has done its job.
385 %D Dump out a -L option for each directory in startfile_prefixes.
386 If multilib_dir is set, extra entries are generated with it affixed.
387 %l process LINK_SPEC as a spec.
388 %L process LIB_SPEC as a spec.
389 %M Output multilib_os_dir.
390 %G process LIBGCC_SPEC as a spec.
391 %R Output the concatenation of target_system_root and
392 target_sysroot_suffix.
393 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
394 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
395 %C process CPP_SPEC as a spec.
396 %1 process CC1_SPEC as a spec.
397 %2 process CC1PLUS_SPEC as a spec.
398 %* substitute the variable part of a matched option. (See below.)
399 Note that each comma in the substituted string is replaced by
400 a single space. A space is appended after the last substition
401 unless there is more text in current sequence.
402 %<S remove all occurrences of -S from the command line.
403 Note - this command is position dependent. % commands in the
404 spec string before this one will see -S, % commands in the
405 spec string after this one will not.
406 %>S Similar to "%<S", but keep it in the GCC command line.
407 %<S* remove all occurrences of all switches beginning with -S from the
410 Call the named function FUNCTION, passing it ARGS. ARGS is
411 first processed as a nested spec string, then split into an
412 argument vector in the usual fashion. The function returns
413 a string which is processed as if it had appeared literally
414 as part of the current spec.
415 %{S} substitutes the -S switch, if that switch was given to GCC.
416 If that switch was not specified, this substitutes nothing.
417 Here S is a metasyntactic variable.
418 %{S*} substitutes all the switches specified to GCC whose names start
419 with -S. This is used for -o, -I, etc; switches that take
420 arguments. GCC considers `-o foo' as being one switch whose
421 name starts with `o'. %{o*} would substitute this text,
422 including the space; thus, two arguments would be generated.
423 %{S*&T*} likewise, but preserve order of S and T options (the order
424 of S and T in the spec is not significant). Can be any number
425 of ampersand-separated variables; for each the wild card is
426 optional. Useful for CPP as %{D*&U*&A*}.
428 %{S:X} substitutes X, if the -S switch was given to GCC.
429 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
430 %{S*:X} substitutes X if one or more switches whose names start
431 with -S was given to GCC. Normally X is substituted only
432 once, no matter how many such switches appeared. However,
433 if %* appears somewhere in X, then X will be substituted
434 once for each matching switch, with the %* replaced by the
435 part of that switch that matched the '*'. A space will be
436 appended after the last substition unless there is more
437 text in current sequence.
438 %{.S:X} substitutes X, if processing a file with suffix S.
439 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
440 %{,S:X} substitutes X, if processing a file which will use spec S.
441 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
443 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
444 combined with '!', '.', ',', and '*' as above binding stronger
446 If %* appears in X, all of the alternatives must be starred, and
447 only the first matching alternative is substituted.
448 %{%:function(args):X}
449 Call function named FUNCTION with args ARGS. If the function
450 returns non-NULL, then X is substituted, if it returns
451 NULL, it isn't substituted.
452 %{S:X; if S was given to GCC, substitutes X;
453 T:Y; else if T was given to GCC, substitutes Y;
454 :D} else substitutes D. There can be as many clauses as you need.
455 This may be combined with '.', '!', ',', '|', and '*' as above.
457 %(Spec) processes a specification defined in a specs file as *Spec:
459 The conditional text X in a %{S:X} or similar construct may contain
460 other nested % constructs or spaces, or even newlines. They are
461 processed as usual, as described above. Trailing white space in X is
462 ignored. White space may also appear anywhere on the left side of the
463 colon in these constructs, except between . or * and the corresponding
466 The -O, -f, -g, -m, and -W switches are handled specifically in these
467 constructs. If another value of -O or the negated form of a -f, -m, or
468 -W switch is found later in the command line, the earlier switch
469 value is ignored, except with {S*} where S is just one letter; this
470 passes all matching options.
472 The character | at the beginning of the predicate text is used to indicate
473 that a command should be piped to the following command, but only if -pipe
476 Note that it is built into GCC which switches take arguments and which
477 do not. You might think it would be useful to generalize this to
478 allow each compiler's spec to say which switches take arguments. But
479 this cannot be done in a consistent fashion. GCC cannot even decide
480 which input files have been specified without knowing which switches
481 take arguments, and it must know which input files to compile in order
482 to tell which compilers to run.
484 GCC also knows implicitly that arguments starting in `-l' are to be
485 treated as compiler output files, and passed to the linker in their
486 proper position among the other output files. */
488 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
490 /* config.h can define ASM_SPEC to provide extra args to the assembler
491 or extra switch-translations. */
496 /* config.h can define ASM_FINAL_SPEC to run a post processor after
497 the assembler has run. */
498 #ifndef ASM_FINAL_SPEC
499 #define ASM_FINAL_SPEC \
501 objcopy --extract-dwo \
502 %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \
503 %{c:%{o*:%:replace-extension(%{o*:%*} .dwo)}%{!o*:%b.dwo}}%{!c:%b.dwo} \n\
504 objcopy --strip-dwo \
505 %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \
509 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
510 or extra switch-translations. */
515 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
516 or extra switch-translations. */
521 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
522 or extra switch-translations. */
524 #define CC1PLUS_SPEC ""
527 /* config.h can define LINK_SPEC to provide extra args to the linker
528 or extra switch-translations. */
533 /* config.h can define LIB_SPEC to override the default libraries. */
535 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
538 /* When using -fsplit-stack we need to wrap pthread_create, in order
539 to initialize the stack guard. We always use wrapping, rather than
540 shared library ordering, and we keep the wrapper function in
541 libgcc. This is not yet a real spec, though it could become one;
542 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping
543 only works with GNU ld and gold. */
544 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}"
547 #define STATIC_LIBASAN_LIBS \
548 " %{static-libasan:%:include(libsanitizer.spec)%(link_libasan)}"
549 #ifdef LIBASAN_EARLY_SPEC
550 #define LIBASAN_SPEC STATIC_LIBASAN_LIBS
551 #elif defined(HAVE_LD_STATIC_DYNAMIC)
552 #define LIBASAN_SPEC "%{static-libasan:" LD_STATIC_OPTION \
553 "} -lasan %{static-libasan:" LD_DYNAMIC_OPTION "}" \
556 #define LIBASAN_SPEC "-lasan" STATIC_LIBASAN_LIBS
560 #ifndef LIBASAN_EARLY_SPEC
561 #define LIBASAN_EARLY_SPEC ""
565 #define STATIC_LIBTSAN_LIBS \
566 " %{static-libtsan:%:include(libsanitizer.spec)%(link_libtsan)}"
567 #ifdef LIBTSAN_EARLY_SPEC
568 #define LIBTSAN_SPEC STATIC_LIBTSAN_LIBS
569 #elif defined(HAVE_LD_STATIC_DYNAMIC)
570 #define LIBTSAN_SPEC "%{static-libtsan:" LD_STATIC_OPTION \
571 "} -ltsan %{static-libtsan:" LD_DYNAMIC_OPTION "}" \
574 #define LIBTSAN_SPEC "-ltsan" STATIC_LIBTSAN_LIBS
578 #ifndef LIBTSAN_EARLY_SPEC
579 #define LIBTSAN_EARLY_SPEC ""
583 #define STATIC_LIBLSAN_LIBS \
584 " %{static-liblsan:%:include(libsanitizer.spec)%(link_liblsan)}"
585 #ifdef LIBLSAN_EARLY_SPEC
586 #define LIBLSAN_SPEC STATIC_LIBLSAN_LIBS
587 #elif defined(HAVE_LD_STATIC_DYNAMIC)
588 #define LIBLSAN_SPEC "%{static-liblsan:" LD_STATIC_OPTION \
589 "} -llsan %{static-liblsan:" LD_DYNAMIC_OPTION "}" \
592 #define LIBLSAN_SPEC "-llsan" STATIC_LIBLSAN_LIBS
596 #ifndef LIBLSAN_EARLY_SPEC
597 #define LIBLSAN_EARLY_SPEC ""
600 #ifndef LIBUBSAN_SPEC
601 #define STATIC_LIBUBSAN_LIBS \
602 " %{static-libubsan:%:include(libsanitizer.spec)%(link_libubsan)}"
603 #ifdef HAVE_LD_STATIC_DYNAMIC
604 #define LIBUBSAN_SPEC "%{static-libubsan:" LD_STATIC_OPTION \
605 "} -lubsan %{static-libubsan:" LD_DYNAMIC_OPTION "}" \
608 #define LIBUBSAN_SPEC "-lubsan" STATIC_LIBUBSAN_LIBS
612 /* Linker options for compressed debug sections. */
613 #if HAVE_LD_COMPRESS_DEBUG == 0
614 /* No linker support. */
615 #define LINK_COMPRESS_DEBUG_SPEC \
616 " %{gz*:%e-gz is not supported in this configuration} "
617 #elif HAVE_LD_COMPRESS_DEBUG == 1
618 /* GNU style on input, GNU ld options. Reject, not useful. */
619 #define LINK_COMPRESS_DEBUG_SPEC \
620 " %{gz*:%e-gz is not supported in this configuration} "
621 #elif HAVE_LD_COMPRESS_DEBUG == 2
622 /* GNU style, GNU gold options. */
623 #define LINK_COMPRESS_DEBUG_SPEC \
624 " %{gz|gz=zlib-gnu:" LD_COMPRESS_DEBUG_OPTION "=zlib}" \
625 " %{gz=none:" LD_COMPRESS_DEBUG_OPTION "=none}" \
626 " %{gz=zlib:%e-gz=zlib is not supported in this configuration} "
627 #elif HAVE_LD_COMPRESS_DEBUG == 3
628 /* ELF gABI style. */
629 #define LINK_COMPRESS_DEBUG_SPEC \
630 " %{gz|gz=zlib:" LD_COMPRESS_DEBUG_OPTION "=zlib}" \
631 " %{gz=none:" LD_COMPRESS_DEBUG_OPTION "=none}" \
632 " %{gz=zlib-gnu:" LD_COMPRESS_DEBUG_OPTION "=zlib-gnu} "
634 #error Unknown value for HAVE_LD_COMPRESS_DEBUG.
637 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
640 #if defined(REAL_LIBGCC_SPEC)
641 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
642 #elif defined(LINK_LIBGCC_SPECIAL_1)
643 /* Have gcc do the search for libgcc.a. */
644 #define LIBGCC_SPEC "libgcc.a%s"
646 #define LIBGCC_SPEC "-lgcc"
650 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
651 #ifndef STARTFILE_SPEC
652 #define STARTFILE_SPEC \
653 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
656 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
658 #define ENDFILE_SPEC ""
662 #define LINKER_NAME "collect2"
665 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
666 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
671 /* Assembler options for compressed debug sections. */
672 #if HAVE_LD_COMPRESS_DEBUG < 2
673 /* Reject if the linker cannot write compressed debug sections. */
674 #define ASM_COMPRESS_DEBUG_SPEC \
675 " %{gz*:%e-gz is not supported in this configuration} "
676 #else /* HAVE_LD_COMPRESS_DEBUG >= 2 */
677 #if HAVE_AS_COMPRESS_DEBUG == 0
678 /* No assembler support. Ignore silently. */
679 #define ASM_COMPRESS_DEBUG_SPEC \
681 #elif HAVE_AS_COMPRESS_DEBUG == 1
682 /* GNU style, GNU as options. */
683 #define ASM_COMPRESS_DEBUG_SPEC \
684 " %{gz|gz=zlib-gnu:" AS_COMPRESS_DEBUG_OPTION "}" \
685 " %{gz=none:" AS_NO_COMPRESS_DEBUG_OPTION "}" \
686 " %{gz=zlib:%e-gz=zlib is not supported in this configuration} "
687 #elif HAVE_AS_COMPRESS_DEBUG == 2
688 /* ELF gABI style. */
689 #define ASM_COMPRESS_DEBUG_SPEC \
690 " %{gz|gz=zlib:" AS_COMPRESS_DEBUG_OPTION "=zlib}" \
691 " %{gz=none:" AS_COMPRESS_DEBUG_OPTION "=none}" \
692 " %{gz=zlib-gnu:" AS_COMPRESS_DEBUG_OPTION "=zlib-gnu} "
694 #error Unknown value for HAVE_AS_COMPRESS_DEBUG.
696 #endif /* HAVE_LD_COMPRESS_DEBUG >= 2 */
698 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
700 #ifndef ASM_DEBUG_SPEC
701 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
702 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
703 # define ASM_DEBUG_SPEC \
704 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
705 ? "%{!g0:%{gdwarf*:--gdwarf2}%{!gdwarf*:%{g*:--gstabs}}}" ASM_MAP \
706 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
708 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
709 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
711 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
712 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
716 #ifndef ASM_DEBUG_SPEC
717 # define ASM_DEBUG_SPEC ""
720 /* Here is the spec for running the linker, after compiling all files. */
722 /* This is overridable by the target in case they need to specify the
723 -lgcc and -lc order specially, yet not require them to override all
724 of LINK_COMMAND_SPEC. */
725 #ifndef LINK_GCC_C_SEQUENCE_SPEC
726 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
729 #ifndef LINK_SSP_SPEC
730 #ifdef TARGET_LIBC_PROVIDES_SSP
731 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
732 "|fstack-protector-strong|fstack-protector-explicit:}"
734 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
735 "|fstack-protector-strong|fstack-protector-explicit" \
736 ":-lssp_nonshared -lssp}"
740 #ifndef LINK_PIE_SPEC
742 #define LINK_PIE_SPEC "%{pie:-pie} "
744 #define LINK_PIE_SPEC "%{pie:} "
748 #ifndef LINK_BUILDID_SPEC
749 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
750 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
754 /* Conditional to test whether the LTO plugin is used or not.
755 FIXME: For slim LTO we will need to enable plugin unconditionally. This
756 still cause problems with PLUGIN_LD != LD and when plugin is built but
757 not useable. For GCC 4.6 we don't support slim LTO and thus we can enable
758 plugin only when LTO is enabled. We still honor explicit
759 -fuse-linker-plugin if the linker used understands -plugin. */
761 /* The linker has some plugin support. */
762 #if HAVE_LTO_PLUGIN > 0
763 /* The linker used has full plugin support, use LTO plugin by default. */
764 #if HAVE_LTO_PLUGIN == 2
765 #define PLUGIN_COND "!fno-use-linker-plugin:%{!fno-lto"
766 #define PLUGIN_COND_CLOSE "}"
768 /* The linker used has limited plugin support, use LTO plugin with explicit
769 -fuse-linker-plugin. */
770 #define PLUGIN_COND "fuse-linker-plugin"
771 #define PLUGIN_COND_CLOSE ""
773 #define LINK_PLUGIN_SPEC \
775 -plugin %(linker_plugin_file) \
776 -plugin-opt=%(lto_wrapper) \
777 -plugin-opt=-fresolution=%u.res \
778 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
781 /* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */
782 #define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\
783 %e-fuse-linker-plugin is not supported in this configuration}"
786 /* Linker command line options for -fsanitize= early on the command line. */
787 #ifndef SANITIZER_EARLY_SPEC
788 #define SANITIZER_EARLY_SPEC "\
789 %{!nostdlib:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_EARLY_SPEC "} \
790 %{%:sanitize(thread):" LIBTSAN_EARLY_SPEC "} \
791 %{%:sanitize(leak):" LIBLSAN_EARLY_SPEC "}}}"
794 /* Linker command line options for -fsanitize= late on the command line. */
795 #ifndef SANITIZER_SPEC
796 #define SANITIZER_SPEC "\
797 %{!nostdlib:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_SPEC "\
798 %{static:%ecannot specify -static with -fsanitize=address}}\
799 %{%:sanitize(thread):" LIBTSAN_SPEC "\
800 %{static:%ecannot specify -static with -fsanitize=thread}}\
801 %{%:sanitize(undefined):" LIBUBSAN_SPEC "}\
802 %{%:sanitize(leak):" LIBLSAN_SPEC "}}}"
805 /* This is the spec to use, once the code for creating the vtable
806 verification runtime library, libvtv.so, has been created. Currently
807 the vtable verification runtime functions are in libstdc++, so we use
808 the spec just below this one. */
809 #ifndef VTABLE_VERIFICATION_SPEC
810 #define VTABLE_VERIFICATION_SPEC "\
811 %{!nostdlib:%{fvtable-verify=std: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}\
812 %{fvtable-verify=preinit: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}}"
815 /* -u* was put back because both BSD and SysV seem to support it. */
816 /* %{static:} simply prevents an error message if the target machine
817 doesn't handle -static. */
818 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
819 scripts which exist in user specified directories, or in standard
821 /* We pass any -flto flags on to the linker, which is expected
822 to understand them. In practice, this means it had better be collect2. */
823 /* %{e*} includes -export-dynamic; see comment in common.opt. */
824 #ifndef LINK_COMMAND_SPEC
825 #define LINK_COMMAND_SPEC "\
826 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
829 "%{flto|flto=*:%<fcompare-debug*} \
830 %{flto} %{fno-lto} %{flto=*} %l " LINK_PIE_SPEC \
831 "%{fuse-ld=*:-fuse-ld=%*} " LINK_COMPRESS_DEBUG_SPEC \
832 "%X %{o*} %{e*} %{N} %{n} %{r}\
833 %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}} " VTABLE_VERIFICATION_SPEC " \
834 %{static:} %{L*} %(mfwrap) %(link_libgcc) " SANITIZER_EARLY_SPEC " %o\
835 %{fopenacc|fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
836 %{fcilkplus:%:include(libcilkrts.spec)%(link_cilkrts)}\
837 %{fgnu-tm:%:include(libitm.spec)%(link_itm)}\
838 %(mflib) " STACK_SPLIT_SPEC "\
839 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} " SANITIZER_SPEC " \
840 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
841 %{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}"
844 #ifndef LINK_LIBGCC_SPEC
845 /* Generate -L options for startfile prefix list. */
846 # define LINK_LIBGCC_SPEC "%D"
849 #ifndef STARTFILE_PREFIX_SPEC
850 # define STARTFILE_PREFIX_SPEC ""
854 # define SYSROOT_SPEC "--sysroot=%R"
857 #ifndef SYSROOT_SUFFIX_SPEC
858 # define SYSROOT_SUFFIX_SPEC ""
861 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
862 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
865 static const char *asm_debug = ASM_DEBUG_SPEC;
866 static const char *cpp_spec = CPP_SPEC;
867 static const char *cc1_spec = CC1_SPEC;
868 static const char *cc1plus_spec = CC1PLUS_SPEC;
869 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
870 static const char *link_ssp_spec = LINK_SSP_SPEC;
871 static const char *asm_spec = ASM_SPEC;
872 static const char *asm_final_spec = ASM_FINAL_SPEC;
873 static const char *link_spec = LINK_SPEC;
874 static const char *lib_spec = LIB_SPEC;
875 static const char *link_gomp_spec = "";
876 static const char *libgcc_spec = LIBGCC_SPEC;
877 static const char *endfile_spec = ENDFILE_SPEC;
878 static const char *startfile_spec = STARTFILE_SPEC;
879 static const char *linker_name_spec = LINKER_NAME;
880 static const char *linker_plugin_file_spec = "";
881 static const char *lto_wrapper_spec = "";
882 static const char *lto_gcc_spec = "";
883 static const char *link_command_spec = LINK_COMMAND_SPEC;
884 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
885 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
886 static const char *sysroot_spec = SYSROOT_SPEC;
887 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
888 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
889 static const char *self_spec = "";
891 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
892 There should be no need to override these in target dependent files,
893 but we need to copy them to the specs file so that newer versions
894 of the GCC driver can correctly drive older tool chains with the
895 appropriate -B options. */
897 /* When cpplib handles traditional preprocessing, get rid of this, and
898 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
899 that we default the front end language better. */
900 static const char *trad_capable_cpp =
901 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}";
903 /* We don't wrap .d files in %W{} since a missing .d file, and
904 therefore no dependency entry, confuses make into thinking a .o
905 file that happens to exist is up-to-date. */
906 static const char *cpp_unique_options =
907 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
908 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
909 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
910 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
911 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
912 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
913 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
914 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
917 /* This contains cpp options which are common with cc1_options and are passed
918 only when preprocessing only to avoid duplication. We pass the cc1 spec
919 options to the preprocessor so that it the cc1 spec may manipulate
920 options used to set target flags. Those special target flags settings may
921 in turn cause preprocessor symbols to be defined specially. */
922 static const char *cpp_options =
923 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
924 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
925 %{undef} %{save-temps*:-fpch-preprocess}";
927 /* This contains cpp options which are not passed when the preprocessor
928 output will be used by another program. */
929 static const char *cpp_debug_options = "%{d*}";
931 /* NB: This is shared amongst all front-ends, except for Ada. */
932 static const char *cc1_options =
933 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
934 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
935 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
936 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
937 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
938 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
939 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
940 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\
941 %{-target-help:--target-help}\
942 %{-version:--version}\
943 %{-help=*:--help=%*}\
944 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
945 %{fsyntax-only:-o %j} %{-param*}\
946 %{coverage:-fprofile-arcs -ftest-coverage}";
948 static const char *asm_options =
949 "%{-target-help:%:print-asm-header()} "
951 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
952 to the assembler equivalents. */
953 "%{v} %{w:-W} %{I*} "
955 ASM_COMPRESS_DEBUG_SPEC
956 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
958 static const char *invoke_as =
959 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
961 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
962 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
966 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
967 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
971 /* Some compilers have limits on line lengths, and the multilib_select
972 and/or multilib_matches strings can be very long, so we build them at
974 static struct obstack multilib_obstack;
975 static const char *multilib_select;
976 static const char *multilib_matches;
977 static const char *multilib_defaults;
978 static const char *multilib_exclusions;
979 static const char *multilib_reuse;
981 /* Check whether a particular argument is a default argument. */
983 #ifndef MULTILIB_DEFAULTS
984 #define MULTILIB_DEFAULTS { "" }
987 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
989 #ifndef DRIVER_SELF_SPECS
990 #define DRIVER_SELF_SPECS ""
993 /* Linking to libgomp implies pthreads. This is particularly important
994 for targets that use different start files and suchlike. */
995 #ifndef GOMP_SELF_SPECS
996 #define GOMP_SELF_SPECS "%{fopenacc|fopenmp|ftree-parallelize-loops=*: " \
1000 /* Likewise for -fgnu-tm. */
1001 #ifndef GTM_SELF_SPECS
1002 #define GTM_SELF_SPECS "%{fgnu-tm: -pthread}"
1005 /* Likewise for -fcilkplus. */
1006 #ifndef CILK_SELF_SPECS
1007 #define CILK_SELF_SPECS "%{fcilkplus: -pthread}"
1010 static const char *const driver_self_specs[] = {
1011 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
1012 DRIVER_SELF_SPECS, CONFIGURE_SPECS, GOMP_SELF_SPECS, GTM_SELF_SPECS,
1016 #ifndef OPTION_DEFAULT_SPECS
1017 #define OPTION_DEFAULT_SPECS { "", "" }
1026 static const struct default_spec
1027 option_default_specs[] = { OPTION_DEFAULT_SPECS };
1031 struct user_specs *next;
1032 const char *filename;
1035 static struct user_specs *user_specs_head, *user_specs_tail;
1038 /* Record the mapping from file suffixes for compilation specs. */
1042 const char *suffix; /* Use this compiler for input files
1043 whose names end in this suffix. */
1045 const char *spec; /* To use this compiler, run this spec. */
1047 const char *cpp_spec; /* If non-NULL, substitute this spec
1048 for `%C', rather than the usual
1050 const int combinable; /* If nonzero, compiler can deal with
1051 multiple source files at once (IMA). */
1052 const int needs_preprocessing; /* If nonzero, source files need to
1053 be run through a preprocessor. */
1056 /* Pointer to a vector of `struct compiler' that gives the spec for
1057 compiling a file, based on its suffix.
1058 A file that does not end in any of these suffixes will be passed
1059 unchanged to the loader and nothing else will be done to it.
1061 An entry containing two 0s is used to terminate the vector.
1063 If multiple entries match a file, the last matching one is used. */
1065 static struct compiler *compilers;
1067 /* Number of entries in `compilers', not counting the null terminator. */
1069 static int n_compilers;
1071 /* The default list of file name suffixes and their compilation specs. */
1073 static const struct compiler default_compilers[] =
1075 /* Add lists of suffixes of known languages here. If those languages
1076 were not present when we built the driver, we will hit these copies
1077 and be given a more meaningful error than "file not used since
1078 linking is not done". */
1079 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
1080 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
1081 {".mii", "#Objective-C++", 0, 0, 0},
1082 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
1083 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
1084 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
1085 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
1086 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
1087 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
1088 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
1089 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
1090 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
1091 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
1092 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
1093 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
1094 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
1095 {".r", "#Ratfor", 0, 0, 0},
1096 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
1097 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
1098 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
1099 {".go", "#Go", 0, 1, 0},
1100 /* Next come the entries for C. */
1101 {".c", "@c", 0, 0, 1},
1103 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1104 external preprocessor if -save-temps is given. */
1105 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1108 %eGNU C no longer supports -traditional without -E}\
1109 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1110 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1111 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1113 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1114 cc1 %(cpp_unique_options) %(cc1_options)}}}\
1115 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
1117 "%{!E:%e-E or -x required when input is from standard input}\
1118 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
1119 {".h", "@c-header", 0, 0, 0},
1121 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1122 external preprocessor if -save-temps is given. */
1123 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1125 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1126 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1127 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1129 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
1130 %W{o*:--output-pch=%*}}%V}\
1131 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1132 cc1 %(cpp_unique_options) %(cc1_options)\
1133 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
1134 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
1135 {".i", "@cpp-output", 0, 0, 0},
1137 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
1138 {".s", "@assembler", 0, 0, 0},
1140 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
1141 {".sx", "@assembler-with-cpp", 0, 0, 0},
1142 {".S", "@assembler-with-cpp", 0, 0, 0},
1143 {"@assembler-with-cpp",
1144 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
1145 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1146 %{E|M|MM:%(cpp_debug_options)}\
1147 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1148 as %(asm_debug) %(asm_options) %|.s %A }}}}"
1150 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1151 %{E|M|MM:%(cpp_debug_options)}\
1152 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1153 as %(asm_debug) %(asm_options) %m.s %A }}}}"
1158 /* Mark end of table. */
1162 /* Number of elements in default_compilers, not counting the terminator. */
1164 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
1166 typedef char *char_p; /* For DEF_VEC_P. */
1168 /* A vector of options to give to the linker.
1169 These options are accumulated by %x,
1170 and substituted into the linker command with %X. */
1171 static vec<char_p> linker_options;
1173 /* A vector of options to give to the assembler.
1174 These options are accumulated by -Wa,
1175 and substituted into the assembler command with %Y. */
1176 static vec<char_p> assembler_options;
1178 /* A vector of options to give to the preprocessor.
1179 These options are accumulated by -Wp,
1180 and substituted into the preprocessor command with %Z. */
1181 static vec<char_p> preprocessor_options;
1184 skip_whitespace (char *p)
1188 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1189 be considered whitespace. */
1190 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1192 else if (*p == '\n' || *p == ' ' || *p == '\t')
1206 /* Structures to keep track of prefixes to try when looking for files. */
1210 const char *prefix; /* String to prepend to the path. */
1211 struct prefix_list *next; /* Next in linked list. */
1212 int require_machine_suffix; /* Don't use without machine_suffix. */
1213 /* 2 means try both machine_suffix and just_machine_suffix. */
1214 int priority; /* Sort key - priority within list. */
1215 int os_multilib; /* 1 if OS multilib scheme should be used,
1216 0 for GCC multilib scheme. */
1221 struct prefix_list *plist; /* List of prefixes to try */
1222 int max_len; /* Max length of a prefix in PLIST */
1223 const char *name; /* Name of this list (used in config stuff) */
1226 /* List of prefixes to try when looking for executables. */
1228 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1230 /* List of prefixes to try when looking for startup (crt0) files. */
1232 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1234 /* List of prefixes to try when looking for include files. */
1236 static struct path_prefix include_prefixes = { 0, 0, "include" };
1238 /* Suffix to attach to directories searched for commands.
1239 This looks like `MACHINE/VERSION/'. */
1241 static const char *machine_suffix = 0;
1243 /* Suffix to attach to directories searched for commands.
1244 This is just `MACHINE/'. */
1246 static const char *just_machine_suffix = 0;
1248 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1250 static const char *gcc_exec_prefix;
1252 /* Adjusted value of standard_libexec_prefix. */
1254 static const char *gcc_libexec_prefix;
1256 /* Default prefixes to attach to command names. */
1258 #ifndef STANDARD_STARTFILE_PREFIX_1
1259 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1261 #ifndef STANDARD_STARTFILE_PREFIX_2
1262 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1265 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1266 #undef MD_EXEC_PREFIX
1267 #undef MD_STARTFILE_PREFIX
1268 #undef MD_STARTFILE_PREFIX_1
1271 /* If no prefixes defined, use the null string, which will disable them. */
1272 #ifndef MD_EXEC_PREFIX
1273 #define MD_EXEC_PREFIX ""
1275 #ifndef MD_STARTFILE_PREFIX
1276 #define MD_STARTFILE_PREFIX ""
1278 #ifndef MD_STARTFILE_PREFIX_1
1279 #define MD_STARTFILE_PREFIX_1 ""
1282 /* These directories are locations set at configure-time based on the
1283 --prefix option provided to configure. Their initializers are
1284 defined in Makefile.in. These paths are not *directly* used when
1285 gcc_exec_prefix is set because, in that case, we know where the
1286 compiler has been installed, and use paths relative to that
1287 location instead. */
1288 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1289 static const char *const standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1290 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1291 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1293 /* For native compilers, these are well-known paths containing
1294 components that may be provided by the system. For cross
1295 compilers, these paths are not used. */
1296 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1297 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1298 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1299 static const char *const standard_startfile_prefix_1
1300 = STANDARD_STARTFILE_PREFIX_1;
1301 static const char *const standard_startfile_prefix_2
1302 = STANDARD_STARTFILE_PREFIX_2;
1304 /* A relative path to be used in finding the location of tools
1305 relative to the driver. */
1306 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1308 /* A prefix to be used when this is an accelerator compiler. */
1309 static const char *const accel_dir_suffix = ACCEL_DIR_SUFFIX;
1311 /* Subdirectory to use for locating libraries. Set by
1312 set_multilib_dir based on the compilation options. */
1314 static const char *multilib_dir;
1316 /* Subdirectory to use for locating libraries in OS conventions. Set by
1317 set_multilib_dir based on the compilation options. */
1319 static const char *multilib_os_dir;
1321 /* Subdirectory to use for locating libraries in multiarch conventions. Set by
1322 set_multilib_dir based on the compilation options. */
1324 static const char *multiarch_dir;
1326 /* Structure to keep track of the specs that have been defined so far.
1327 These are accessed using %(specname) in a compiler or link
1332 /* The following 2 fields must be first */
1333 /* to allow EXTRA_SPECS to be initialized */
1334 const char *name; /* name of the spec. */
1335 const char *ptr; /* available ptr if no static pointer */
1337 /* The following fields are not initialized */
1338 /* by EXTRA_SPECS */
1339 const char **ptr_spec; /* pointer to the spec itself. */
1340 struct spec_list *next; /* Next spec in linked list. */
1341 int name_len; /* length of the name */
1342 bool user_p; /* whether string come from file spec. */
1343 bool alloc_p; /* whether string was allocated */
1346 #define INIT_STATIC_SPEC(NAME,PTR) \
1347 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, false, false }
1349 /* List of statically defined specs. */
1350 static struct spec_list static_specs[] =
1352 INIT_STATIC_SPEC ("asm", &asm_spec),
1353 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1354 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1355 INIT_STATIC_SPEC ("asm_options", &asm_options),
1356 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1357 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1358 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1359 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1360 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1361 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1362 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1363 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1364 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1365 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1366 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec),
1367 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1368 INIT_STATIC_SPEC ("link", &link_spec),
1369 INIT_STATIC_SPEC ("lib", &lib_spec),
1370 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec),
1371 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1372 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1373 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1374 INIT_STATIC_SPEC ("version", &compiler_version),
1375 INIT_STATIC_SPEC ("multilib", &multilib_select),
1376 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1377 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1378 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1379 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1380 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1381 INIT_STATIC_SPEC ("multilib_reuse", &multilib_reuse),
1382 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1383 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec),
1384 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec),
1385 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec),
1386 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1387 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1388 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1389 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1390 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1391 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec),
1392 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1393 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1394 INIT_STATIC_SPEC ("self_spec", &self_spec),
1397 #ifdef EXTRA_SPECS /* additional specs needed */
1398 /* Structure to keep track of just the first two args of a spec_list.
1399 That is all that the EXTRA_SPECS macro gives us. */
1402 const char *const name;
1403 const char *const ptr;
1406 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1407 static struct spec_list *extra_specs = (struct spec_list *) 0;
1410 /* List of dynamically allocates specs that have been defined so far. */
1412 static struct spec_list *specs = (struct spec_list *) 0;
1414 /* List of static spec functions. */
1416 static const struct spec_function static_spec_functions[] =
1418 { "getenv", getenv_spec_function },
1419 { "if-exists", if_exists_spec_function },
1420 { "if-exists-else", if_exists_else_spec_function },
1421 { "sanitize", sanitize_spec_function },
1422 { "replace-outfile", replace_outfile_spec_function },
1423 { "remove-outfile", remove_outfile_spec_function },
1424 { "version-compare", version_compare_spec_function },
1425 { "include", include_spec_function },
1426 { "find-file", find_file_spec_function },
1427 { "find-plugindir", find_plugindir_spec_function },
1428 { "print-asm-header", print_asm_header_spec_function },
1429 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function },
1430 { "compare-debug-self-opt", compare_debug_self_opt_spec_function },
1431 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function },
1432 { "pass-through-libs", pass_through_libs_spec_func },
1433 { "replace-extension", replace_extension_spec_func },
1434 #ifdef EXTRA_SPEC_FUNCTIONS
1435 EXTRA_SPEC_FUNCTIONS
1440 static int processing_spec_function;
1442 /* Add appropriate libgcc specs to OBSTACK, taking into account
1443 various permutations of -shared-libgcc, -shared, and such. */
1445 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1447 #ifndef USE_LD_AS_NEEDED
1448 #define USE_LD_AS_NEEDED 0
1452 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1453 const char *static_name, const char *eh_name)
1457 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}"
1458 "%{!static:%{!static-libgcc:"
1459 #if USE_LD_AS_NEEDED
1460 "%{!shared-libgcc:",
1461 static_name, " " LD_AS_NEEDED_OPTION " ",
1462 shared_name, " " LD_NO_AS_NEEDED_OPTION
1465 shared_name, "%{!shared: ", static_name, "}"
1469 "%{!shared-libgcc:", static_name, " ", eh_name, "}"
1470 "%{shared-libgcc:", shared_name, " ", static_name, "}"
1474 "%{shared-libgcc:", shared_name, "}"
1475 "%{!shared-libgcc:", static_name, "}"
1478 "%{shared:", shared_name, "}"
1483 obstack_grow (obstack, buf, strlen (buf));
1486 #endif /* ENABLE_SHARED_LIBGCC */
1488 /* Initialize the specs lookup routines. */
1493 struct spec_list *next = (struct spec_list *) 0;
1494 struct spec_list *sl = (struct spec_list *) 0;
1498 return; /* Already initialized. */
1501 fnotice (stderr, "Using built-in specs.\n");
1504 extra_specs = XCNEWVEC (struct spec_list, ARRAY_SIZE (extra_specs_1));
1506 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1508 sl = &extra_specs[i];
1509 sl->name = extra_specs_1[i].name;
1510 sl->ptr = extra_specs_1[i].ptr;
1512 sl->name_len = strlen (sl->name);
1513 sl->ptr_spec = &sl->ptr;
1518 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1520 sl = &static_specs[i];
1525 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1526 /* ??? If neither -shared-libgcc nor --static-libgcc was
1527 seen, then we should be making an educated guess. Some proposed
1528 heuristics for ELF include:
1530 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1531 program will be doing dynamic loading, which will likely
1532 need the shared libgcc.
1534 (2) If "-ldl", then it's also a fair bet that we're doing
1537 (3) For each ET_DYN we're linking against (either through -lfoo
1538 or /some/path/foo.so), check to see whether it or one of
1539 its dependencies depends on a shared libgcc.
1543 If the runtime is fixed to look for program headers instead
1544 of calling __register_frame_info at all, for each object,
1545 use the shared libgcc if any EH symbol referenced.
1547 If crtstuff is fixed to not invoke __register_frame_info
1548 automatically, for each object, use the shared libgcc if
1549 any non-empty unwind section found.
1551 Doing any of this probably requires invoking an external program to
1552 do the actual object file scanning. */
1554 const char *p = libgcc_spec;
1557 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1558 when given the proper command line arguments. */
1561 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1563 init_gcc_specs (&obstack,
1565 #ifdef USE_LIBUNWIND_EXCEPTIONS
1571 #ifdef USE_LIBUNWIND_EXCEPTIONS
1572 # ifdef HAVE_LD_STATIC_DYNAMIC
1573 " %{!static:" LD_STATIC_OPTION "} -lunwind"
1574 " %{!static:" LD_DYNAMIC_OPTION "}"
1584 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1586 /* Ug. We don't know shared library extensions. Hope that
1587 systems that use this form don't do shared libraries. */
1588 init_gcc_specs (&obstack,
1592 #ifdef USE_LIBUNWIND_EXCEPTIONS
1601 obstack_1grow (&obstack, *p);
1602 in_sep = (*p == ' ');
1607 obstack_1grow (&obstack, '\0');
1608 libgcc_spec = XOBFINISH (&obstack, const char *);
1611 #ifdef USE_AS_TRADITIONAL_FORMAT
1612 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1614 static const char tf[] = "--traditional-format ";
1615 obstack_grow (&obstack, tf, sizeof (tf) - 1);
1616 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1617 asm_spec = XOBFINISH (&obstack, const char *);
1621 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \
1622 defined LINKER_HASH_STYLE
1623 # ifdef LINK_BUILDID_SPEC
1624 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1625 obstack_grow (&obstack, LINK_BUILDID_SPEC, sizeof (LINK_BUILDID_SPEC) - 1);
1627 # ifdef LINK_EH_SPEC
1628 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1629 obstack_grow (&obstack, LINK_EH_SPEC, sizeof (LINK_EH_SPEC) - 1);
1631 # ifdef LINKER_HASH_STYLE
1632 /* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had
1635 static const char hash_style[] = "--hash-style=";
1636 obstack_grow (&obstack, hash_style, sizeof (hash_style) - 1);
1637 obstack_grow (&obstack, LINKER_HASH_STYLE, sizeof (LINKER_HASH_STYLE) - 1);
1638 obstack_1grow (&obstack, ' ');
1641 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1642 link_spec = XOBFINISH (&obstack, const char *);
1648 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1649 removed; If the spec starts with a + then SPEC is added to the end of the
1653 set_spec (const char *name, const char *spec, bool user_p)
1655 struct spec_list *sl;
1656 const char *old_spec;
1657 int name_len = strlen (name);
1660 /* If this is the first call, initialize the statically allocated specs. */
1663 struct spec_list *next = (struct spec_list *) 0;
1664 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1666 sl = &static_specs[i];
1673 /* See if the spec already exists. */
1674 for (sl = specs; sl; sl = sl->next)
1675 if (name_len == sl->name_len && !strcmp (sl->name, name))
1680 /* Not found - make it. */
1681 sl = XNEW (struct spec_list);
1682 sl->name = xstrdup (name);
1683 sl->name_len = name_len;
1684 sl->ptr_spec = &sl->ptr;
1686 *(sl->ptr_spec) = "";
1691 old_spec = *(sl->ptr_spec);
1692 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1693 ? concat (old_spec, spec + 1, NULL)
1698 fnotice (stderr, "Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1701 /* Free the old spec. */
1702 if (old_spec && sl->alloc_p)
1703 free (CONST_CAST (char *, old_spec));
1705 sl->user_p = user_p;
1709 /* Accumulate a command (program name and args), and run it. */
1711 typedef const char *const_char_p; /* For DEF_VEC_P. */
1713 /* Vector of pointers to arguments in the current line of specifications. */
1715 static vec<const_char_p> argbuf;
1717 /* Were the options -c, -S or -E passed. */
1718 static int have_c = 0;
1720 /* Was the option -o passed. */
1721 static int have_o = 0;
1723 /* Pointer to output file name passed in with -o. */
1724 static const char *output_file = 0;
1726 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1727 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1730 static struct temp_name {
1731 const char *suffix; /* suffix associated with the code. */
1732 int length; /* strlen (suffix). */
1733 int unique; /* Indicates whether %g or %u/%U was used. */
1734 const char *filename; /* associated filename. */
1735 int filename_length; /* strlen (filename). */
1736 struct temp_name *next;
1739 /* Number of commands executed so far. */
1741 static int execution_count;
1743 /* Number of commands that exited with a signal. */
1745 static int signal_count;
1747 /* Allocate the argument vector. */
1755 /* Clear out the vector of arguments (after a command is executed). */
1760 argbuf.truncate (0);
1763 /* Add one argument to the vector at the end.
1764 This is done when a space is seen or at the end of the line.
1765 If DELETE_ALWAYS is nonzero, the arg is a filename
1766 and the file should be deleted eventually.
1767 If DELETE_FAILURE is nonzero, the arg is a filename
1768 and the file should be deleted if this compilation fails. */
1771 store_arg (const char *arg, int delete_always, int delete_failure)
1773 argbuf.safe_push (arg);
1775 if (delete_always || delete_failure)
1778 /* If the temporary file we should delete is specified as
1779 part of a joined argument extract the filename. */
1781 && (p = strrchr (arg, '=')))
1783 record_temp_file (arg, delete_always, delete_failure);
1787 /* Load specs from a file name named FILENAME, replacing occurrences of
1788 various different types of line-endings, \r\n, \n\r and just \r, with
1792 load_specs (const char *filename)
1796 struct stat statbuf;
1803 fnotice (stderr, "Reading specs from %s\n", filename);
1805 /* Open and stat the file. */
1806 desc = open (filename, O_RDONLY, 0);
1808 pfatal_with_name (filename);
1809 if (stat (filename, &statbuf) < 0)
1810 pfatal_with_name (filename);
1812 /* Read contents of file into BUFFER. */
1813 buffer = XNEWVEC (char, statbuf.st_size + 1);
1814 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1816 pfatal_with_name (filename);
1817 buffer[readlen] = 0;
1820 specs = XNEWVEC (char, readlen + 1);
1822 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1828 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1830 else if (*(buffer_p + 1) == '\n') /* \r\n */
1844 /* Read compilation specs from a file named FILENAME,
1845 replacing the default ones.
1847 A suffix which starts with `*' is a definition for
1848 one of the machine-specific sub-specs. The "suffix" should be
1849 *asm, *cc1, *cpp, *link, *startfile, etc.
1850 The corresponding spec is stored in asm_spec, etc.,
1851 rather than in the `compilers' vector.
1853 Anything invalid in the file is a fatal error. */
1856 read_specs (const char *filename, bool main_p, bool user_p)
1861 buffer = load_specs (filename);
1863 /* Scan BUFFER for specs, putting them in the vector. */
1869 char *in, *out, *p1, *p2, *p3;
1871 /* Advance P in BUFFER to the next nonblank nocomment line. */
1872 p = skip_whitespace (p);
1876 /* Is this a special command that starts with '%'? */
1877 /* Don't allow this for the main specs file, since it would
1878 encourage people to overwrite it. */
1879 if (*p == '%' && !main_p)
1882 while (*p && *p != '\n')
1888 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1889 && (p1[sizeof "%include" - 1] == ' '
1890 || p1[sizeof "%include" - 1] == '\t'))
1894 p1 += sizeof ("%include");
1895 while (*p1 == ' ' || *p1 == '\t')
1898 if (*p1++ != '<' || p[-2] != '>')
1899 fatal_error (input_location,
1900 "specs %%include syntax malformed after "
1902 (long) (p1 - buffer + 1));
1905 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1906 read_specs (new_filename ? new_filename : p1, false, user_p);
1909 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1910 && (p1[sizeof "%include_noerr" - 1] == ' '
1911 || p1[sizeof "%include_noerr" - 1] == '\t'))
1915 p1 += sizeof "%include_noerr";
1916 while (*p1 == ' ' || *p1 == '\t')
1919 if (*p1++ != '<' || p[-2] != '>')
1920 fatal_error (input_location,
1921 "specs %%include syntax malformed after "
1923 (long) (p1 - buffer + 1));
1926 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1928 read_specs (new_filename, false, user_p);
1929 else if (verbose_flag)
1930 fnotice (stderr, "could not find specs file %s\n", p1);
1933 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1934 && (p1[sizeof "%rename" - 1] == ' '
1935 || p1[sizeof "%rename" - 1] == '\t'))
1938 struct spec_list *sl;
1939 struct spec_list *newsl;
1941 /* Get original name. */
1942 p1 += sizeof "%rename";
1943 while (*p1 == ' ' || *p1 == '\t')
1946 if (! ISALPHA ((unsigned char) *p1))
1947 fatal_error (input_location,
1948 "specs %%rename syntax malformed after "
1950 (long) (p1 - buffer));
1953 while (*p2 && !ISSPACE ((unsigned char) *p2))
1956 if (*p2 != ' ' && *p2 != '\t')
1957 fatal_error (input_location,
1958 "specs %%rename syntax malformed after "
1960 (long) (p2 - buffer));
1964 while (*p2 == ' ' || *p2 == '\t')
1967 if (! ISALPHA ((unsigned char) *p2))
1968 fatal_error (input_location,
1969 "specs %%rename syntax malformed after "
1971 (long) (p2 - buffer));
1973 /* Get new spec name. */
1975 while (*p3 && !ISSPACE ((unsigned char) *p3))
1979 fatal_error (input_location,
1980 "specs %%rename syntax malformed after "
1982 (long) (p3 - buffer));
1985 for (sl = specs; sl; sl = sl->next)
1986 if (name_len == sl->name_len && !strcmp (sl->name, p1))
1990 fatal_error (input_location,
1991 "specs %s spec was not found to be renamed", p1);
1993 if (strcmp (p1, p2) == 0)
1996 for (newsl = specs; newsl; newsl = newsl->next)
1997 if (strcmp (newsl->name, p2) == 0)
1998 fatal_error (input_location,
1999 "%s: attempt to rename spec %qs to "
2000 "already defined spec %qs",
2005 fnotice (stderr, "rename spec %s to %s\n", p1, p2);
2007 fnotice (stderr, "spec is '%s'\n\n", *(sl->ptr_spec));
2011 set_spec (p2, *(sl->ptr_spec), user_p);
2013 free (CONST_CAST (char *, *(sl->ptr_spec)));
2015 *(sl->ptr_spec) = "";
2020 fatal_error (input_location,
2021 "specs unknown %% command after %ld characters",
2022 (long) (p1 - buffer));
2025 /* Find the colon that should end the suffix. */
2027 while (*p1 && *p1 != ':' && *p1 != '\n')
2030 /* The colon shouldn't be missing. */
2032 fatal_error (input_location,
2033 "specs file malformed after %ld characters",
2034 (long) (p1 - buffer));
2036 /* Skip back over trailing whitespace. */
2038 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
2041 /* Copy the suffix to a string. */
2042 suffix = save_string (p, p2 - p);
2043 /* Find the next line. */
2044 p = skip_whitespace (p1 + 1);
2046 fatal_error (input_location,
2047 "specs file malformed after %ld characters",
2048 (long) (p - buffer));
2051 /* Find next blank line or end of string. */
2052 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
2055 /* Specs end at the blank line and do not include the newline. */
2056 spec = save_string (p, p1 - p);
2059 /* Delete backslash-newline sequences from the spec. */
2064 if (in[0] == '\\' && in[1] == '\n')
2066 else if (in[0] == '#')
2067 while (*in && *in != '\n')
2075 if (suffix[0] == '*')
2077 if (! strcmp (suffix, "*link_command"))
2078 link_command_spec = spec;
2080 set_spec (suffix + 1, spec, user_p);
2084 /* Add this pair to the vector. */
2086 = XRESIZEVEC (struct compiler, compilers, n_compilers + 2);
2088 compilers[n_compilers].suffix = suffix;
2089 compilers[n_compilers].spec = spec;
2091 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2095 link_command_spec = spec;
2098 if (link_command_spec == 0)
2099 fatal_error (input_location, "spec file has no spec for linking");
2102 /* Record the names of temporary files we tell compilers to write,
2103 and delete them at the end of the run. */
2105 /* This is the common prefix we use to make temp file names.
2106 It is chosen once for each run of this program.
2107 It is substituted into a spec by %g or %j.
2108 Thus, all temp file names contain this prefix.
2109 In practice, all temp file names start with this prefix.
2111 This prefix comes from the envvar TMPDIR if it is defined;
2112 otherwise, from the P_tmpdir macro if that is defined;
2113 otherwise, in /usr/tmp or /tmp;
2114 or finally the current directory if all else fails. */
2116 static const char *temp_filename;
2118 /* Length of the prefix. */
2120 static int temp_filename_length;
2122 /* Define the list of temporary files to delete. */
2127 struct temp_file *next;
2130 /* Queue of files to delete on success or failure of compilation. */
2131 static struct temp_file *always_delete_queue;
2132 /* Queue of files to delete on failure of compilation. */
2133 static struct temp_file *failure_delete_queue;
2135 /* Record FILENAME as a file to be deleted automatically.
2136 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2137 otherwise delete it in any case.
2138 FAIL_DELETE nonzero means delete it if a compilation step fails;
2139 otherwise delete it in any case. */
2142 record_temp_file (const char *filename, int always_delete, int fail_delete)
2144 char *const name = xstrdup (filename);
2148 struct temp_file *temp;
2149 for (temp = always_delete_queue; temp; temp = temp->next)
2150 if (! filename_cmp (name, temp->name))
2153 temp = XNEW (struct temp_file);
2154 temp->next = always_delete_queue;
2156 always_delete_queue = temp;
2163 struct temp_file *temp;
2164 for (temp = failure_delete_queue; temp; temp = temp->next)
2165 if (! filename_cmp (name, temp->name))
2171 temp = XNEW (struct temp_file);
2172 temp->next = failure_delete_queue;
2174 failure_delete_queue = temp;
2180 /* Delete all the temporary files whose names we previously recorded. */
2182 #ifndef DELETE_IF_ORDINARY
2183 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2186 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2187 if (unlink (NAME) < 0) \
2189 perror_with_name (NAME); \
2194 delete_if_ordinary (const char *name)
2200 printf ("Delete %s? (y or n) ", name);
2204 while ((c = getchar ()) != '\n' && c != EOF)
2207 if (i == 'y' || i == 'Y')
2209 DELETE_IF_ORDINARY (name, st, verbose_flag);
2213 delete_temp_files (void)
2215 struct temp_file *temp;
2217 for (temp = always_delete_queue; temp; temp = temp->next)
2218 delete_if_ordinary (temp->name);
2219 always_delete_queue = 0;
2222 /* Delete all the files to be deleted on error. */
2225 delete_failure_queue (void)
2227 struct temp_file *temp;
2229 for (temp = failure_delete_queue; temp; temp = temp->next)
2230 delete_if_ordinary (temp->name);
2234 clear_failure_queue (void)
2236 failure_delete_queue = 0;
2239 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2241 If DO_MULTI is true iterate over the paths twice, first with multilib
2242 suffix then without, otherwise iterate over the paths once without
2243 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2244 to avoid visiting the same path twice, but we could do better. For
2245 instance, /usr/lib/../lib is considered different from /usr/lib.
2246 At least EXTRA_SPACE chars past the end of the path passed to
2247 CALLBACK are available for use by the callback.
2248 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2250 Returns the value returned by CALLBACK. */
2253 for_each_path (const struct path_prefix *paths,
2256 void *(*callback) (char *, void *),
2257 void *callback_info)
2259 struct prefix_list *pl;
2260 const char *multi_dir = NULL;
2261 const char *multi_os_dir = NULL;
2262 const char *multiarch_suffix = NULL;
2263 const char *multi_suffix;
2264 const char *just_multi_suffix;
2267 bool skip_multi_dir = false;
2268 bool skip_multi_os_dir = false;
2270 multi_suffix = machine_suffix;
2271 just_multi_suffix = just_machine_suffix;
2272 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0)
2274 multi_dir = concat (multilib_dir, dir_separator_str, NULL);
2275 multi_suffix = concat (multi_suffix, multi_dir, NULL);
2276 just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL);
2278 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0)
2279 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL);
2281 multiarch_suffix = concat (multiarch_dir, dir_separator_str, NULL);
2285 size_t multi_dir_len = 0;
2286 size_t multi_os_dir_len = 0;
2287 size_t multiarch_len = 0;
2289 size_t just_suffix_len;
2293 multi_dir_len = strlen (multi_dir);
2295 multi_os_dir_len = strlen (multi_os_dir);
2296 if (multiarch_suffix)
2297 multiarch_len = strlen (multiarch_suffix);
2298 suffix_len = strlen (multi_suffix);
2299 just_suffix_len = strlen (just_multi_suffix);
2303 len = paths->max_len + extra_space + 1;
2304 len += MAX (MAX (suffix_len, multi_os_dir_len), multiarch_len);
2305 path = XNEWVEC (char, len);
2308 for (pl = paths->plist; pl != 0; pl = pl->next)
2310 len = strlen (pl->prefix);
2311 memcpy (path, pl->prefix, len);
2313 /* Look first in MACHINE/VERSION subdirectory. */
2314 if (!skip_multi_dir)
2316 memcpy (path + len, multi_suffix, suffix_len + 1);
2317 ret = callback (path, callback_info);
2322 /* Some paths are tried with just the machine (ie. target)
2323 subdir. This is used for finding as, ld, etc. */
2325 && pl->require_machine_suffix == 2)
2327 memcpy (path + len, just_multi_suffix, just_suffix_len + 1);
2328 ret = callback (path, callback_info);
2333 /* Now try the multiarch path. */
2335 && !pl->require_machine_suffix && multiarch_dir)
2337 memcpy (path + len, multiarch_suffix, multiarch_len + 1);
2338 ret = callback (path, callback_info);
2343 /* Now try the base path. */
2344 if (!pl->require_machine_suffix
2345 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir))
2347 const char *this_multi;
2348 size_t this_multi_len;
2350 if (pl->os_multilib)
2352 this_multi = multi_os_dir;
2353 this_multi_len = multi_os_dir_len;
2357 this_multi = multi_dir;
2358 this_multi_len = multi_dir_len;
2362 memcpy (path + len, this_multi, this_multi_len + 1);
2366 ret = callback (path, callback_info);
2374 if (multi_dir == NULL && multi_os_dir == NULL)
2377 /* Run through the paths again, this time without multilibs.
2378 Don't repeat any we have already seen. */
2381 free (CONST_CAST (char *, multi_dir));
2383 free (CONST_CAST (char *, multi_suffix));
2384 multi_suffix = machine_suffix;
2385 free (CONST_CAST (char *, just_multi_suffix));
2386 just_multi_suffix = just_machine_suffix;
2389 skip_multi_dir = true;
2392 free (CONST_CAST (char *, multi_os_dir));
2393 multi_os_dir = NULL;
2396 skip_multi_os_dir = true;
2401 free (CONST_CAST (char *, multi_dir));
2402 free (CONST_CAST (char *, multi_suffix));
2403 free (CONST_CAST (char *, just_multi_suffix));
2406 free (CONST_CAST (char *, multi_os_dir));
2412 /* Callback for build_search_list. Adds path to obstack being built. */
2414 struct add_to_obstack_info {
2421 add_to_obstack (char *path, void *data)
2423 struct add_to_obstack_info *info = (struct add_to_obstack_info *) data;
2425 if (info->check_dir && !is_directory (path, false))
2428 if (!info->first_time)
2429 obstack_1grow (info->ob, PATH_SEPARATOR);
2431 obstack_grow (info->ob, path, strlen (path));
2433 info->first_time = false;
2437 /* Add or change the value of an environment variable, outputting the
2438 change to standard error if in verbose mode. */
2440 xputenv (const char *string)
2443 fnotice (stderr, "%s\n", string);
2444 putenv (CONST_CAST (char *, string));
2447 /* Build a list of search directories from PATHS.
2448 PREFIX is a string to prepend to the list.
2449 If CHECK_DIR_P is true we ensure the directory exists.
2450 If DO_MULTI is true, multilib paths are output first, then
2452 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2453 It is also used by the --print-search-dirs flag. */
2456 build_search_list (const struct path_prefix *paths, const char *prefix,
2457 bool check_dir, bool do_multi)
2459 struct add_to_obstack_info info;
2461 info.ob = &collect_obstack;
2462 info.check_dir = check_dir;
2463 info.first_time = true;
2465 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2466 obstack_1grow (&collect_obstack, '=');
2468 for_each_path (paths, do_multi, 0, add_to_obstack, &info);
2470 obstack_1grow (&collect_obstack, '\0');
2471 return XOBFINISH (&collect_obstack, char *);
2474 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2478 putenv_from_prefixes (const struct path_prefix *paths, const char *env_var,
2481 xputenv (build_search_list (paths, env_var, true, do_multi));
2484 /* Check whether NAME can be accessed in MODE. This is like access,
2485 except that it never considers directories to be executable. */
2488 access_check (const char *name, int mode)
2494 if (stat (name, &st) < 0
2495 || S_ISDIR (st.st_mode))
2499 return access (name, mode);
2502 /* Callback for find_a_file. Appends the file name to the directory
2503 path. If the resulting file exists in the right mode, return the
2504 full pathname to the file. */
2506 struct file_at_path_info {
2515 file_at_path (char *path, void *data)
2517 struct file_at_path_info *info = (struct file_at_path_info *) data;
2518 size_t len = strlen (path);
2520 memcpy (path + len, info->name, info->name_len);
2521 len += info->name_len;
2523 /* Some systems have a suffix for executable files.
2524 So try appending that first. */
2525 if (info->suffix_len)
2527 memcpy (path + len, info->suffix, info->suffix_len + 1);
2528 if (access_check (path, info->mode) == 0)
2533 if (access_check (path, info->mode) == 0)
2539 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2540 access to check permissions. If DO_MULTI is true, search multilib
2541 paths then non-multilib paths, otherwise do not search multilib paths.
2542 Return 0 if not found, otherwise return its name, allocated with malloc. */
2545 find_a_file (const struct path_prefix *pprefix, const char *name, int mode,
2548 struct file_at_path_info info;
2550 #ifdef DEFAULT_ASSEMBLER
2551 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2552 return xstrdup (DEFAULT_ASSEMBLER);
2555 #ifdef DEFAULT_LINKER
2556 if (! strcmp (name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2557 return xstrdup (DEFAULT_LINKER);
2560 /* Determine the filename to execute (special case for absolute paths). */
2562 if (IS_ABSOLUTE_PATH (name))
2564 if (access (name, mode) == 0)
2565 return xstrdup (name);
2571 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "";
2572 info.name_len = strlen (info.name);
2573 info.suffix_len = strlen (info.suffix);
2576 return (char*) for_each_path (pprefix, do_multi,
2577 info.name_len + info.suffix_len,
2578 file_at_path, &info);
2581 /* Ranking of prefixes in the sort list. -B prefixes are put before
2584 enum path_prefix_priority
2586 PREFIX_PRIORITY_B_OPT,
2587 PREFIX_PRIORITY_LAST
2590 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2591 order according to PRIORITY. Within each PRIORITY, new entries are
2594 If WARN is nonzero, we will warn if no file is found
2595 through this prefix. WARN should point to an int
2596 which will be set to 1 if this entry is used.
2598 COMPONENT is the value to be passed to update_path.
2600 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2601 the complete value of machine_suffix.
2602 2 means try both machine_suffix and just_machine_suffix. */
2605 add_prefix (struct path_prefix *pprefix, const char *prefix,
2606 const char *component, /* enum prefix_priority */ int priority,
2607 int require_machine_suffix, int os_multilib)
2609 struct prefix_list *pl, **prev;
2612 for (prev = &pprefix->plist;
2613 (*prev) != NULL && (*prev)->priority <= priority;
2614 prev = &(*prev)->next)
2617 /* Keep track of the longest prefix. */
2619 prefix = update_path (prefix, component);
2620 len = strlen (prefix);
2621 if (len > pprefix->max_len)
2622 pprefix->max_len = len;
2624 pl = XNEW (struct prefix_list);
2625 pl->prefix = prefix;
2626 pl->require_machine_suffix = require_machine_suffix;
2627 pl->priority = priority;
2628 pl->os_multilib = os_multilib;
2630 /* Insert after PREV. */
2635 /* Same as add_prefix, but prepending target_system_root to prefix. */
2636 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2638 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2639 const char *component,
2640 /* enum prefix_priority */ int priority,
2641 int require_machine_suffix, int os_multilib)
2643 if (!IS_ABSOLUTE_PATH (prefix))
2644 fatal_error (input_location, "system path %qs is not absolute", prefix);
2646 if (target_system_root)
2648 char *sysroot_no_trailing_dir_separator = xstrdup (target_system_root);
2649 size_t sysroot_len = strlen (target_system_root);
2652 && target_system_root[sysroot_len - 1] == DIR_SEPARATOR)
2653 sysroot_no_trailing_dir_separator[sysroot_len - 1] = '\0';
2655 if (target_sysroot_suffix)
2656 prefix = concat (sysroot_no_trailing_dir_separator,
2657 target_sysroot_suffix, prefix, NULL);
2659 prefix = concat (sysroot_no_trailing_dir_separator, prefix, NULL);
2661 free (sysroot_no_trailing_dir_separator);
2663 /* We have to override this because GCC's notion of sysroot
2664 moves along with GCC. */
2668 add_prefix (pprefix, prefix, component, priority,
2669 require_machine_suffix, os_multilib);
2672 /* Execute the command specified by the arguments on the current line of spec.
2673 When using pipes, this includes several piped-together commands
2674 with `|' between them.
2676 Return 0 if successful, -1 if failed. */
2682 int n_commands; /* # of command. */
2684 struct pex_obj *pex;
2687 const char *prog; /* program name. */
2688 const char **argv; /* vector of args. */
2692 struct command *commands; /* each command buffer with above info. */
2694 gcc_assert (!processing_spec_function);
2698 string = find_a_file (&exec_prefixes,
2699 argbuf[0], X_OK, false);
2702 insert_wrapper (wrapper_string);
2705 /* Count # of piped commands. */
2706 for (n_commands = 1, i = 0; argbuf.iterate (i, &arg); i++)
2707 if (strcmp (arg, "|") == 0)
2710 /* Get storage for each command. */
2711 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2713 /* Split argbuf into its separate piped processes,
2714 and record info about each one.
2715 Also search for the programs that are to be run. */
2717 argbuf.safe_push (0);
2719 commands[0].prog = argbuf[0]; /* first command. */
2720 commands[0].argv = argbuf.address ();
2722 if (!wrapper_string)
2724 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false);
2725 commands[0].argv[0] = (string) ? string : commands[0].argv[0];
2728 for (n_commands = 1, i = 0; argbuf.iterate (i, &arg); i++)
2729 if (arg && strcmp (arg, "|") == 0)
2730 { /* each command. */
2731 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2732 fatal_error (input_location, "-pipe not supported");
2734 argbuf[i] = 0; /* Termination of
2736 commands[n_commands].prog = argbuf[i + 1];
2737 commands[n_commands].argv
2738 = &(argbuf.address ())[i + 1];
2739 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2742 commands[n_commands].argv[0] = string;
2746 /* If -v, print what we are about to do, and maybe query. */
2750 /* For help listings, put a blank line between sub-processes. */
2751 if (print_help_list)
2752 fputc ('\n', stderr);
2754 /* Print each piped command as a separate line. */
2755 for (i = 0; i < n_commands; i++)
2757 const char *const *j;
2759 if (verbose_only_flag)
2761 for (j = commands[i].argv; *j; j++)
2764 for (p = *j; *p; ++p)
2765 if (!ISALNUM ((unsigned char) *p)
2766 && *p != '_' && *p != '/' && *p != '-' && *p != '.')
2770 fprintf (stderr, " \"");
2771 for (p = *j; *p; ++p)
2773 if (*p == '"' || *p == '\\' || *p == '$')
2774 fputc ('\\', stderr);
2777 fputc ('"', stderr);
2779 /* If it's empty, print "". */
2781 fprintf (stderr, " \"\"");
2783 fprintf (stderr, " %s", *j);
2787 for (j = commands[i].argv; *j; j++)
2788 /* If it's empty, print "". */
2790 fprintf (stderr, " \"\"");
2792 fprintf (stderr, " %s", *j);
2794 /* Print a pipe symbol after all but the last command. */
2795 if (i + 1 != n_commands)
2796 fprintf (stderr, " |");
2797 fprintf (stderr, "\n");
2800 if (verbose_only_flag != 0)
2802 /* verbose_only_flag should act as if the spec was
2803 executed, so increment execution_count before
2804 returning. This prevents spurious warnings about
2805 unused linker input files, etc. */
2810 fnotice (stderr, "\nGo ahead? (y or n) ");
2814 while (getchar () != '\n')
2817 if (i != 'y' && i != 'Y')
2822 #ifdef ENABLE_VALGRIND_CHECKING
2823 /* Run the each command through valgrind. To simplify prepending the
2824 path to valgrind and the option "-q" (for quiet operation unless
2825 something triggers), we allocate a separate argv array. */
2827 for (i = 0; i < n_commands; i++)
2833 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2836 argv = XALLOCAVEC (const char *, argc + 3);
2838 argv[0] = VALGRIND_PATH;
2840 for (j = 2; j < argc + 2; j++)
2841 argv[j] = commands[i].argv[j - 2];
2844 commands[i].argv = argv;
2845 commands[i].prog = argv[0];
2849 /* Run each piped subprocess. */
2851 pex = pex_init (PEX_USE_PIPES | ((report_times || report_times_to_file)
2852 ? PEX_RECORD_TIMES : 0),
2853 progname, temp_filename);
2855 fatal_error (input_location, "pex_init failed: %m");
2857 for (i = 0; i < n_commands; i++)
2861 const char *string = commands[i].argv[0];
2863 errmsg = pex_run (pex,
2864 ((i + 1 == n_commands ? PEX_LAST : 0)
2865 | (string == commands[i].prog ? PEX_SEARCH : 0)),
2866 string, CONST_CAST (char **, commands[i].argv),
2871 fatal_error (input_location, errmsg);
2875 pfatal_with_name (errmsg);
2879 if (i && string != commands[i].prog)
2880 free (CONST_CAST (char *, string));
2885 /* Wait for all the subprocesses to finish. */
2889 struct pex_time *times = NULL;
2892 statuses = (int *) alloca (n_commands * sizeof (int));
2893 if (!pex_get_status (pex, n_commands, statuses))
2894 fatal_error (input_location, "failed to get exit status: %m");
2896 if (report_times || report_times_to_file)
2898 times = (struct pex_time *) alloca (n_commands * sizeof (struct pex_time));
2899 if (!pex_get_times (pex, n_commands, times))
2900 fatal_error (input_location, "failed to get process times: %m");
2905 for (i = 0; i < n_commands; ++i)
2907 int status = statuses[i];
2909 if (WIFSIGNALED (status))
2912 /* SIGPIPE is a special case. It happens in -pipe mode
2913 when the compiler dies before the preprocessor is done,
2914 or the assembler dies before the compiler is done.
2915 There's generally been an error already, and this is
2916 just fallout. So don't generate another error unless
2917 we would otherwise have succeeded. */
2918 if (WTERMSIG (status) == SIGPIPE
2919 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2926 internal_error_no_backtrace ("%s (program %s)",
2927 strsignal (WTERMSIG (status)),
2930 else if (WIFEXITED (status)
2931 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2933 /* For ICEs in cc1, cc1obj, cc1plus see if it is
2934 reproducible or not. */
2937 && WEXITSTATUS (status) == ICE_EXIT_CODE
2939 && (p = strrchr (commands[0].argv[0], DIR_SEPARATOR))
2940 && ! strncmp (p + 1, "cc1", 3))
2941 try_generate_repro (commands[0].argv);
2942 if (WEXITSTATUS (status) > greatest_status)
2943 greatest_status = WEXITSTATUS (status);
2947 if (report_times || report_times_to_file)
2949 struct pex_time *pt = ×[i];
2952 ut = ((double) pt->user_seconds
2953 + (double) pt->user_microseconds / 1.0e6);
2954 st = ((double) pt->system_seconds
2955 + (double) pt->system_microseconds / 1.0e6);
2960 fnotice (stderr, "# %s %.2f %.2f\n",
2961 commands[i].prog, ut, st);
2963 if (report_times_to_file)
2966 const char *const *j;
2968 fprintf (report_times_to_file, "%g %g", ut, st);
2970 for (j = &commands[i].prog; *j; j = &commands[i].argv[++c])
2973 for (p = *j; *p; ++p)
2974 if (*p == '"' || *p == '\\' || *p == '$'
2980 fprintf (report_times_to_file, " \"");
2981 for (p = *j; *p; ++p)
2983 if (*p == '"' || *p == '\\' || *p == '$')
2984 fputc ('\\', report_times_to_file);
2985 fputc (*p, report_times_to_file);
2987 fputc ('"', report_times_to_file);
2990 fprintf (report_times_to_file, " %s", *j);
2993 fputc ('\n', report_times_to_file);
2999 if (commands[0].argv[0] != commands[0].prog)
3000 free (CONST_CAST (char *, commands[0].argv[0]));
3006 /* Find all the switches given to us
3007 and make a vector describing them.
3008 The elements of the vector are strings, one per switch given.
3009 If a switch uses following arguments, then the `part1' field
3010 is the switch itself and the `args' field
3011 is a null-terminated vector containing the following arguments.
3012 Bits in the `live_cond' field are:
3013 SWITCH_LIVE to indicate this switch is true in a conditional spec.
3014 SWITCH_FALSE to indicate this switch is overridden by a later switch.
3015 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
3016 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
3017 in all do_spec calls afterwards. Used for %<S from self specs.
3018 The `validated' field is nonzero if any spec has looked at this switch;
3019 if it remains zero at the end of the run, it must be meaningless. */
3021 #define SWITCH_LIVE (1 << 0)
3022 #define SWITCH_FALSE (1 << 1)
3023 #define SWITCH_IGNORE (1 << 2)
3024 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
3025 #define SWITCH_KEEP_FOR_GCC (1 << 4)
3031 unsigned int live_cond;
3037 static struct switchstr *switches;
3039 static int n_switches;
3041 static int n_switches_alloc;
3043 /* Set to zero if -fcompare-debug is disabled, positive if it's
3044 enabled and we're running the first compilation, negative if it's
3045 enabled and we're running the second compilation. For most of the
3046 time, it's in the range -1..1, but it can be temporarily set to 2
3047 or 3 to indicate that the -fcompare-debug flags didn't come from
3048 the command-line, but rather from the GCC_COMPARE_DEBUG environment
3049 variable, until a synthesized -fcompare-debug flag is added to the
3053 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
3054 int compare_debug_second;
3056 /* Set to the flags that should be passed to the second compilation in
3057 a -fcompare-debug compilation. */
3058 const char *compare_debug_opt;
3060 static struct switchstr *switches_debug_check[2];
3062 static int n_switches_debug_check[2];
3064 static int n_switches_alloc_debug_check[2];
3066 static char *debug_check_temp_file[2];
3068 /* Language is one of three things:
3070 1) The name of a real programming language.
3071 2) NULL, indicating that no one has figured out
3073 3) '*', indicating that the file should be passed
3078 const char *language;
3079 struct compiler *incompiler;
3084 /* Also a vector of input files specified. */
3086 static struct infile *infiles;
3090 static int n_infiles_alloc;
3092 /* True if multiple input files are being compiled to a single
3095 static bool combine_inputs;
3097 /* This counts the number of libraries added by lang_specific_driver, so that
3098 we can tell if there were any user supplied any files or libraries. */
3100 static int added_libraries;
3102 /* And a vector of corresponding output files is made up later. */
3104 const char **outfiles;
3106 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3108 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
3109 is true if we should look for an executable suffix. DO_OBJ
3110 is true if we should look for an object suffix. */
3113 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
3114 int do_obj ATTRIBUTE_UNUSED)
3116 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3124 len = strlen (name);
3126 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3127 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
3128 if (do_obj && len > 2
3129 && name[len - 2] == '.'
3130 && name[len - 1] == 'o')
3132 obstack_grow (&obstack, name, len - 2);
3133 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
3134 name = XOBFINISH (&obstack, const char *);
3138 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3139 /* If there is no filetype, make it the executable suffix (which includes
3140 the "."). But don't get confused if we have just "-o". */
3141 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
3144 for (i = len - 1; i >= 0; i--)
3145 if (IS_DIR_SEPARATOR (name[i]))
3148 for (i++; i < len; i++)
3152 obstack_grow (&obstack, name, len);
3153 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
3154 strlen (TARGET_EXECUTABLE_SUFFIX));
3155 name = XOBFINISH (&obstack, const char *);
3162 /* Display the command line switches accepted by gcc. */
3166 printf (_("Usage: %s [options] file...\n"), progname);
3167 fputs (_("Options:\n"), stdout);
3169 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
3170 fputs (_(" --help Display this information\n"), stdout);
3171 fputs (_(" --target-help Display target specific command line options\n"), stdout);
3172 fputs (_(" --help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumented}}[,...]\n"), stdout);
3173 fputs (_(" Display specific types of command line options\n"), stdout);
3175 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
3176 fputs (_(" --version Display compiler version information\n"), stdout);
3177 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
3178 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
3179 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
3180 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
3181 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
3182 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
3183 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
3185 -print-multiarch Display the target's normalized GNU triplet, used as\n\
3186 a component in the library path\n"), stdout);
3187 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
3189 -print-multi-lib Display the mapping between command line options and\n\
3190 multiple library search directories\n"), stdout);
3191 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
3192 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout);
3193 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout);
3194 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3195 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3196 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3197 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
3198 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
3199 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3200 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3201 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout);
3203 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
3204 prefixes to other gcc components\n"), stdout);
3205 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3206 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3207 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3208 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3210 --sysroot=<directory> Use <directory> as the root directory for headers\n\
3211 and libraries\n"), stdout);
3212 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3213 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3214 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3215 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3216 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3217 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3218 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3219 fputs (_(" -pie Create a position independent executable\n"), stdout);
3220 fputs (_(" -shared Create a shared library\n"), stdout);
3222 -x <language> Specify the language of the following input files\n\
3223 Permissible languages include: c c++ assembler none\n\
3224 'none' means revert to the default behavior of\n\
3225 guessing the language based on the file's extension\n\
3229 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3230 passed on to the various sub-processes invoked by %s. In order to pass\n\
3231 other options on to these processes the -W<letter> options must be used.\n\
3234 /* The rest of the options are displayed by invocations of the various
3239 add_preprocessor_option (const char *option, int len)
3241 preprocessor_options.safe_push (save_string (option, len));
3245 add_assembler_option (const char *option, int len)
3247 assembler_options.safe_push (save_string (option, len));
3251 add_linker_option (const char *option, int len)
3253 linker_options.safe_push (save_string (option, len));
3256 /* Allocate space for an input file in infiles. */
3261 if (n_infiles_alloc == 0)
3263 n_infiles_alloc = 16;
3264 infiles = XNEWVEC (struct infile, n_infiles_alloc);
3266 else if (n_infiles_alloc == n_infiles)
3268 n_infiles_alloc *= 2;
3269 infiles = XRESIZEVEC (struct infile, infiles, n_infiles_alloc);
3273 /* Store an input file with the given NAME and LANGUAGE in
3277 add_infile (const char *name, const char *language)
3280 infiles[n_infiles].name = name;
3281 infiles[n_infiles++].language = language;
3284 /* Allocate space for a switch in switches. */
3289 if (n_switches_alloc == 0)
3291 n_switches_alloc = 16;
3292 switches = XNEWVEC (struct switchstr, n_switches_alloc);
3294 else if (n_switches_alloc == n_switches)
3296 n_switches_alloc *= 2;
3297 switches = XRESIZEVEC (struct switchstr, switches, n_switches_alloc);
3301 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3302 as validated if VALIDATED and KNOWN if it is an internal switch. */
3305 save_switch (const char *opt, size_t n_args, const char *const *args,
3306 bool validated, bool known)
3309 switches[n_switches].part1 = opt + 1;
3311 switches[n_switches].args = 0;
3314 switches[n_switches].args = XNEWVEC (const char *, n_args + 1);
3315 memcpy (switches[n_switches].args, args, n_args * sizeof (const char *));
3316 switches[n_switches].args[n_args] = NULL;
3319 switches[n_switches].live_cond = 0;
3320 switches[n_switches].validated = validated;
3321 switches[n_switches].known = known;
3322 switches[n_switches].ordering = 0;
3326 /* Handle an option DECODED that is unknown to the option-processing
3330 driver_unknown_option_callback (const struct cl_decoded_option *decoded)
3332 const char *opt = decoded->arg;
3333 if (opt[1] == 'W' && opt[2] == 'n' && opt[3] == 'o' && opt[4] == '-'
3334 && !(decoded->errors & CL_ERR_NEGATIVE))
3336 /* Leave unknown -Wno-* options for the compiler proper, to be
3337 diagnosed only if there are warnings. */
3338 save_switch (decoded->canonical_option[0],
3339 decoded->canonical_option_num_elements - 1,
3340 &decoded->canonical_option[1], false, true);
3343 if (decoded->opt_index == OPT_SPECIAL_unknown)
3345 /* Give it a chance to define it a a spec file. */
3346 save_switch (decoded->canonical_option[0],
3347 decoded->canonical_option_num_elements - 1,
3348 &decoded->canonical_option[1], false, false);
3355 /* Handle an option DECODED that is not marked as CL_DRIVER.
3356 LANG_MASK will always be CL_DRIVER. */
3359 driver_wrong_lang_callback (const struct cl_decoded_option *decoded,
3360 unsigned int lang_mask ATTRIBUTE_UNUSED)
3362 /* At this point, non-driver options are accepted (and expected to
3363 be passed down by specs) unless marked to be rejected by the
3364 driver. Options to be rejected by the driver but accepted by the
3365 compilers proper are treated just like completely unknown
3367 const struct cl_option *option = &cl_options[decoded->opt_index];
3369 if (option->cl_reject_driver)
3370 error ("unrecognized command line option %qs",
3371 decoded->orig_option_with_args_text);
3373 save_switch (decoded->canonical_option[0],
3374 decoded->canonical_option_num_elements - 1,
3375 &decoded->canonical_option[1], false, true);
3378 static const char *spec_lang = 0;
3379 static int last_language_n_infiles;
3381 /* Parse -foffload option argument. */
3384 handle_foffload_option (const char *arg)
3386 const char *c, *cur, *n, *next, *end;
3389 /* If option argument starts with '-' then no target is specified and we
3390 do not need to parse it. */
3394 end = strchr (arg, '=');
3396 end = strchr (arg, '\0');
3401 next = strchr (cur, ',');
3404 next = (next > end) ? end : next;
3406 target = XNEWVEC (char, next - cur + 1);
3407 memcpy (target, cur, next - cur);
3408 target[next - cur] = '\0';
3410 /* If 'disable' is passed to the option, stop parsing the option and clean
3411 the list of offload targets. */
3412 if (strcmp (target, "disable") == 0)
3414 free (offload_targets);
3415 offload_targets = xstrdup ("");
3419 /* Check that GCC is configured to support the offload target. */
3420 c = OFFLOAD_TARGETS;
3423 n = strchr (c, ',');
3425 n = strchr (c, '\0');
3427 if (next - cur == n - c && strncmp (target, c, n - c) == 0)
3430 c = *n ? n + 1 : NULL;
3434 fatal_error (input_location,
3435 "GCC is not configured to support %s as offload target",
3438 if (!offload_targets)
3440 offload_targets = target;
3445 /* Check that the target hasn't already presented in the list. */
3446 c = offload_targets;
3449 n = strchr (c, ':');
3451 n = strchr (c, '\0');
3453 if (next - cur == n - c && strncmp (c, target, n - c) == 0)
3460 /* If duplicate is not found, append the target to the list. */
3463 size_t offload_targets_len = strlen (offload_targets);
3465 = XRESIZEVEC (char, offload_targets,
3466 offload_targets_len + next - cur + 2);
3467 if (offload_targets_len)
3468 offload_targets[offload_targets_len++] = ':';
3469 memcpy (offload_targets + offload_targets_len, target, next - cur);
3474 XDELETEVEC (target);
3478 /* Handle a driver option; arguments and return value as for
3482 driver_handle_option (struct gcc_options *opts,
3483 struct gcc_options *opts_set,
3484 const struct cl_decoded_option *decoded,
3485 unsigned int lang_mask ATTRIBUTE_UNUSED, int kind,
3487 const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED,
3488 diagnostic_context *dc)
3490 size_t opt_index = decoded->opt_index;
3491 const char *arg = decoded->arg;
3492 const char *compare_debug_replacement_opt;
3493 int value = decoded->value;
3494 bool validated = false;
3495 bool do_save = true;
3497 gcc_assert (opts == &global_options);
3498 gcc_assert (opts_set == &global_options_set);
3499 gcc_assert (kind == DK_UNSPECIFIED);
3500 gcc_assert (loc == UNKNOWN_LOCATION);
3501 gcc_assert (dc == global_dc);
3507 struct spec_list *sl;
3509 for (sl = specs; sl; sl = sl->next)
3510 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3511 if (link_command_spec)
3512 printf ("*link_command:\n%s\n\n", link_command_spec);
3516 case OPT_dumpversion:
3517 printf ("%s\n", spec_version);
3520 case OPT_dumpmachine:
3521 printf ("%s\n", spec_machine);
3527 /* CPP driver cannot obtain switch from cc1_options. */
3529 add_preprocessor_option ("--version", strlen ("--version"));
3530 add_assembler_option ("--version", strlen ("--version"));
3531 add_linker_option ("--version", strlen ("--version"));
3535 print_help_list = 1;
3537 /* CPP driver cannot obtain switch from cc1_options. */
3539 add_preprocessor_option ("--help", 6);
3540 add_assembler_option ("--help", 6);
3541 add_linker_option ("--help", 6);
3545 print_subprocess_help = 2;
3548 case OPT__target_help:
3549 print_subprocess_help = 1;
3551 /* CPP driver cannot obtain switch from cc1_options. */
3553 add_preprocessor_option ("--target-help", 13);
3554 add_assembler_option ("--target-help", 13);
3555 add_linker_option ("--target-help", 13);
3558 case OPT__no_sysroot_suffix:
3559 case OPT_pass_exit_codes:
3560 case OPT_print_search_dirs:
3561 case OPT_print_file_name_:
3562 case OPT_print_prog_name_:
3563 case OPT_print_multi_lib:
3564 case OPT_print_multi_directory:
3565 case OPT_print_sysroot:
3566 case OPT_print_multi_os_directory:
3567 case OPT_print_multiarch:
3568 case OPT_print_sysroot_headers_suffix:
3571 /* These options set the variables specified in common.opt
3572 automatically, and do not need to be saved for spec
3577 case OPT_print_libgcc_file_name:
3578 print_file_name = "libgcc.a";
3582 case OPT_fuse_ld_bfd:
3586 case OPT_fuse_ld_gold:
3590 case OPT_fcompare_debug_second:
3591 compare_debug_second = 1;
3594 case OPT_fcompare_debug:
3598 compare_debug_replacement_opt = "-fcompare-debug=";
3600 goto compare_debug_with_arg;
3603 compare_debug_replacement_opt = "-fcompare-debug=-gtoggle";
3605 goto compare_debug_with_arg;
3612 case OPT_fcompare_debug_:
3613 compare_debug_replacement_opt = decoded->canonical_option[0];
3614 compare_debug_with_arg:
3615 gcc_assert (decoded->canonical_option_num_elements == 1);
3616 gcc_assert (arg != NULL);
3621 if (compare_debug < 0)
3622 compare_debug_opt = NULL;
3624 compare_debug_opt = arg;
3625 save_switch (compare_debug_replacement_opt, 0, NULL, validated, true);
3628 case OPT_fdiagnostics_color_:
3629 diagnostic_color_init (dc, value);
3635 /* Pass the rest of this option to the assembler. */
3637 /* Split the argument at commas. */
3639 for (j = 0; arg[j]; j++)
3642 add_assembler_option (arg + prev, j - prev);
3646 /* Record the part after the last comma. */
3647 add_assembler_option (arg + prev, j - prev);
3655 /* Pass the rest of this option to the preprocessor. */
3657 /* Split the argument at commas. */
3659 for (j = 0; arg[j]; j++)
3662 add_preprocessor_option (arg + prev, j - prev);
3666 /* Record the part after the last comma. */
3667 add_preprocessor_option (arg + prev, j - prev);
3675 /* Split the argument at commas. */
3677 for (j = 0; arg[j]; j++)
3680 add_infile (save_string (arg + prev, j - prev), "*");
3683 /* Record the part after the last comma. */
3684 add_infile (arg + prev, "*");
3690 add_infile (arg, "*");
3694 case OPT_Xpreprocessor:
3695 add_preprocessor_option (arg, strlen (arg));
3699 case OPT_Xassembler:
3700 add_assembler_option (arg, strlen (arg));
3705 /* POSIX allows separation of -l and the lib arg; canonicalize
3706 by concatenating -l with its arg */
3707 add_infile (concat ("-l", arg, NULL), "*");
3712 /* Similarly, canonicalize -L for linkers that may not accept
3713 separate arguments. */
3714 save_switch (concat ("-L", arg, NULL), 0, NULL, validated, true);
3719 save_switch (concat ("-F", arg, NULL), 0, NULL, validated, true);
3722 case OPT_save_temps:
3723 save_temps_flag = SAVE_TEMPS_CWD;
3727 case OPT_save_temps_:
3728 if (strcmp (arg, "cwd") == 0)
3729 save_temps_flag = SAVE_TEMPS_CWD;
3730 else if (strcmp (arg, "obj") == 0
3731 || strcmp (arg, "object") == 0)
3732 save_temps_flag = SAVE_TEMPS_OBJ;
3734 fatal_error (input_location, "%qs is an unknown -save-temps option",
3735 decoded->orig_option_with_args_text);
3738 case OPT_no_canonical_prefixes:
3739 /* Already handled as a special case, so ignored here. */
3745 /* These options set the variables specified in common.opt
3746 automatically, but do need to be saved for spec
3752 struct user_specs *user = XNEW (struct user_specs);
3754 user->next = (struct user_specs *) 0;
3755 user->filename = arg;
3756 if (user_specs_tail)
3757 user_specs_tail->next = user;
3759 user_specs_head = user;
3760 user_specs_tail = user;
3766 target_system_root = arg;
3767 target_system_root_changed = 1;
3772 if (report_times_to_file)
3773 fclose (report_times_to_file);
3774 report_times_to_file = fopen (arg, "a");
3780 This is similar to -v except that there is no execution
3781 of the commands and the echoed arguments are quoted. It
3782 is intended for use in shell scripts to capture the
3783 driver-generated command line. */
3784 verbose_only_flag++;
3791 size_t len = strlen (arg);
3793 /* Catch the case where the user has forgotten to append a
3794 directory separator to the path. Note, they may be using
3795 -B to add an executable name prefix, eg "i386-elf-", in
3796 order to distinguish between multiple installations of
3797 GCC in the same directory. Hence we must check to see
3798 if appending a directory separator actually makes a
3799 valid directory name. */
3800 if (!IS_DIR_SEPARATOR (arg[len - 1])
3801 && is_directory (arg, false))
3803 char *tmp = XNEWVEC (char, len + 2);
3805 tmp[len] = DIR_SEPARATOR;
3810 add_prefix (&exec_prefixes, arg, NULL,
3811 PREFIX_PRIORITY_B_OPT, 0, 0);
3812 add_prefix (&startfile_prefixes, arg, NULL,
3813 PREFIX_PRIORITY_B_OPT, 0, 0);
3814 add_prefix (&include_prefixes, arg, NULL,
3815 PREFIX_PRIORITY_B_OPT, 0, 0);
3822 if (!strcmp (spec_lang, "none"))
3823 /* Suppress the warning if -xnone comes after the last input
3824 file, because alternate command interfaces like g++ might
3825 find it useful to place -xnone after each input file. */
3828 last_language_n_infiles = n_infiles;
3834 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3835 arg = convert_filename (arg, ! have_c, 0);
3838 /* Save the output name in case -save-temps=obj was used. */
3839 save_temps_prefix = xstrdup (arg);
3840 /* On some systems, ld cannot handle "-o" without a space. So
3841 split the option from its argument. */
3842 save_switch ("-o", 1, &arg, validated, true);
3845 case OPT_static_libgcc:
3846 case OPT_shared_libgcc:
3847 case OPT_static_libgfortran:
3848 case OPT_static_libstdc__:
3849 /* These are always valid, since gcc.c itself understands the
3850 first two, gfortranspec.c understands -static-libgfortran and
3851 g++spec.c understands -static-libstdc++ */
3860 handle_foffload_option (arg);
3864 /* Various driver options need no special processing at this
3865 point, having been handled in a prescan above or being
3866 handled by specs. */
3871 save_switch (decoded->canonical_option[0],
3872 decoded->canonical_option_num_elements - 1,
3873 &decoded->canonical_option[1], validated, true);
3877 /* Put the driver's standard set of option handlers in *HANDLERS. */
3880 set_option_handlers (struct cl_option_handlers *handlers)
3882 handlers->unknown_option_callback = driver_unknown_option_callback;
3883 handlers->wrong_lang_callback = driver_wrong_lang_callback;
3884 handlers->num_handlers = 3;
3885 handlers->handlers[0].handler = driver_handle_option;
3886 handlers->handlers[0].mask = CL_DRIVER;
3887 handlers->handlers[1].handler = common_handle_option;
3888 handlers->handlers[1].mask = CL_COMMON;
3889 handlers->handlers[2].handler = target_handle_option;
3890 handlers->handlers[2].mask = CL_TARGET;
3893 /* Create the vector `switches' and its contents.
3894 Store its length in `n_switches'. */
3897 process_command (unsigned int decoded_options_count,
3898 struct cl_decoded_option *decoded_options)
3902 char *tooldir_prefix, *tooldir_prefix2;
3903 char *(*get_relative_prefix) (const char *, const char *,
3904 const char *) = NULL;
3905 struct cl_option_handlers handlers;
3908 gcc_exec_prefix = getenv ("GCC_EXEC_PREFIX");
3912 added_libraries = 0;
3914 /* Figure compiler version from version string. */
3916 compiler_version = temp1 = xstrdup (version_string);
3918 for (; *temp1; ++temp1)
3927 /* Handle any -no-canonical-prefixes flag early, to assign the function
3928 that builds relative prefixes. This function creates default search
3929 paths that are needed later in normal option handling. */
3931 for (j = 1; j < decoded_options_count; j++)
3933 if (decoded_options[j].opt_index == OPT_no_canonical_prefixes)
3935 get_relative_prefix = make_relative_prefix_ignore_links;
3939 if (! get_relative_prefix)
3940 get_relative_prefix = make_relative_prefix;
3942 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3943 see if we can create it from the pathname specified in
3944 decoded_options[0].arg. */
3946 gcc_libexec_prefix = standard_libexec_prefix;
3948 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3949 if (!gcc_exec_prefix)
3951 gcc_exec_prefix = get_relative_prefix (decoded_options[0].arg,
3952 standard_bindir_prefix,
3953 standard_exec_prefix);
3954 gcc_libexec_prefix = get_relative_prefix (decoded_options[0].arg,
3955 standard_bindir_prefix,
3956 standard_libexec_prefix);
3957 if (gcc_exec_prefix)
3958 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3962 /* make_relative_prefix requires a program name, but
3963 GCC_EXEC_PREFIX is typically a directory name with a trailing
3964 / (which is ignored by make_relative_prefix), so append a
3966 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL);
3967 gcc_libexec_prefix = get_relative_prefix (tmp_prefix,
3968 standard_exec_prefix,
3969 standard_libexec_prefix);
3971 /* The path is unrelocated, so fallback to the original setting. */
3972 if (!gcc_libexec_prefix)
3973 gcc_libexec_prefix = standard_libexec_prefix;
3979 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3980 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3981 or an automatically created GCC_EXEC_PREFIX from
3982 decoded_options[0].arg. */
3984 /* Do language-specific adjustment/addition of flags. */
3985 lang_specific_driver (&decoded_options, &decoded_options_count,
3988 if (gcc_exec_prefix)
3990 int len = strlen (gcc_exec_prefix);
3992 if (len > (int) sizeof ("/lib/gcc/") - 1
3993 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3995 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3996 if (IS_DIR_SEPARATOR (*temp)
3997 && filename_ncmp (temp + 1, "lib", 3) == 0
3998 && IS_DIR_SEPARATOR (temp[4])
3999 && filename_ncmp (temp + 5, "gcc", 3) == 0)
4000 len -= sizeof ("/lib/gcc/") - 1;
4003 set_std_prefix (gcc_exec_prefix, len);
4004 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
4005 PREFIX_PRIORITY_LAST, 0, 0);
4006 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
4007 PREFIX_PRIORITY_LAST, 0, 0);
4010 /* COMPILER_PATH and LIBRARY_PATH have values
4011 that are lists of directory names with colons. */
4013 temp = getenv ("COMPILER_PATH");
4016 const char *startp, *endp;
4017 char *nstore = (char *) alloca (strlen (temp) + 3);
4019 startp = endp = temp;
4022 if (*endp == PATH_SEPARATOR || *endp == 0)
4024 strncpy (nstore, startp, endp - startp);
4026 strcpy (nstore, concat (".", dir_separator_str, NULL));
4027 else if (!IS_DIR_SEPARATOR (endp[-1]))
4029 nstore[endp - startp] = DIR_SEPARATOR;
4030 nstore[endp - startp + 1] = 0;
4033 nstore[endp - startp] = 0;
4034 add_prefix (&exec_prefixes, nstore, 0,
4035 PREFIX_PRIORITY_LAST, 0, 0);
4036 add_prefix (&include_prefixes, nstore, 0,
4037 PREFIX_PRIORITY_LAST, 0, 0);
4040 endp = startp = endp + 1;
4047 temp = getenv (LIBRARY_PATH_ENV);
4048 if (temp && *cross_compile == '0')
4050 const char *startp, *endp;
4051 char *nstore = (char *) alloca (strlen (temp) + 3);
4053 startp = endp = temp;
4056 if (*endp == PATH_SEPARATOR || *endp == 0)
4058 strncpy (nstore, startp, endp - startp);
4060 strcpy (nstore, concat (".", dir_separator_str, NULL));
4061 else if (!IS_DIR_SEPARATOR (endp[-1]))
4063 nstore[endp - startp] = DIR_SEPARATOR;
4064 nstore[endp - startp + 1] = 0;
4067 nstore[endp - startp] = 0;
4068 add_prefix (&startfile_prefixes, nstore, NULL,
4069 PREFIX_PRIORITY_LAST, 0, 1);
4072 endp = startp = endp + 1;
4079 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
4080 temp = getenv ("LPATH");
4081 if (temp && *cross_compile == '0')
4083 const char *startp, *endp;
4084 char *nstore = (char *) alloca (strlen (temp) + 3);
4086 startp = endp = temp;
4089 if (*endp == PATH_SEPARATOR || *endp == 0)
4091 strncpy (nstore, startp, endp - startp);
4093 strcpy (nstore, concat (".", dir_separator_str, NULL));
4094 else if (!IS_DIR_SEPARATOR (endp[-1]))
4096 nstore[endp - startp] = DIR_SEPARATOR;
4097 nstore[endp - startp + 1] = 0;
4100 nstore[endp - startp] = 0;
4101 add_prefix (&startfile_prefixes, nstore, NULL,
4102 PREFIX_PRIORITY_LAST, 0, 1);
4105 endp = startp = endp + 1;
4112 /* Process the options and store input files and switches in their
4115 last_language_n_infiles = -1;
4117 set_option_handlers (&handlers);
4119 for (j = 1; j < decoded_options_count; j++)
4121 switch (decoded_options[j].opt_index)
4133 for (j = 1; j < decoded_options_count; j++)
4135 if (decoded_options[j].opt_index == OPT_SPECIAL_input_file)
4137 const char *arg = decoded_options[j].arg;
4138 const char *p = strrchr (arg, '@');
4142 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4143 arg = convert_filename (arg, 0, access (arg, F_OK));
4145 /* For LTO static archive support we handle input file
4146 specifications that are composed of a filename and
4147 an offset like FNAME@OFFSET. */
4150 && sscanf (p, "@%li%n", &offset, &consumed) >= 1
4151 && strlen (p) == (unsigned int)consumed)
4153 fname = (char *)xmalloc (p - arg + 1);
4154 memcpy (fname, arg, p - arg);
4155 fname[p - arg] = '\0';
4156 /* Only accept non-stdin and existing FNAME parts, otherwise
4157 try with the full name. */
4158 if (strcmp (fname, "-") == 0 || access (fname, F_OK) < 0)
4161 fname = xstrdup (arg);
4165 fname = xstrdup (arg);
4167 if (strcmp (fname, "-") != 0 && access (fname, F_OK) < 0)
4168 perror_with_name (fname);
4170 add_infile (arg, spec_lang);
4176 read_cmdline_option (&global_options, &global_options_set,
4177 decoded_options + j, UNKNOWN_LOCATION,
4178 CL_DRIVER, &handlers, global_dc);
4182 && strcmp (output_file, "-") != 0
4183 && strcmp (output_file, HOST_BIT_BUCKET) != 0)
4186 for (i = 0; i < n_infiles; i++)
4187 if ((!infiles[i].language || infiles[i].language[0] != '*')
4188 && canonical_filename_eq (infiles[i].name, output_file))
4189 fatal_error (input_location,
4190 "input file %qs is the same as output file",
4194 /* If -save-temps=obj and -o name, create the prefix to use for %b.
4195 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
4196 if (save_temps_flag == SAVE_TEMPS_OBJ && save_temps_prefix != NULL)
4198 save_temps_length = strlen (save_temps_prefix);
4199 temp = strrchr (lbasename (save_temps_prefix), '.');
4202 save_temps_length -= strlen (temp);
4203 save_temps_prefix[save_temps_length] = '\0';
4207 else if (save_temps_prefix != NULL)
4209 free (save_temps_prefix);
4210 save_temps_prefix = NULL;
4213 if (save_temps_flag && use_pipes)
4215 /* -save-temps overrides -pipe, so that temp files are produced */
4216 if (save_temps_flag)
4217 warning (0, "-pipe ignored because -save-temps specified");
4223 const char *gcd = getenv ("GCC_COMPARE_DEBUG");
4225 if (gcd && gcd[0] == '-')
4228 compare_debug_opt = gcd;
4230 else if (gcd && *gcd && strcmp (gcd, "0"))
4233 compare_debug_opt = "-gtoggle";
4236 else if (compare_debug < 0)
4239 gcc_assert (!compare_debug_opt);
4242 /* Set up the search paths. We add directories that we expect to
4243 contain GNU Toolchain components before directories specified by
4244 the machine description so that we will find GNU components (like
4245 the GNU assembler) before those of the host system. */
4247 /* If we don't know where the toolchain has been installed, use the
4248 configured-in locations. */
4249 if (!gcc_exec_prefix)
4252 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
4253 PREFIX_PRIORITY_LAST, 1, 0);
4254 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
4255 PREFIX_PRIORITY_LAST, 2, 0);
4256 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
4257 PREFIX_PRIORITY_LAST, 2, 0);
4259 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
4260 PREFIX_PRIORITY_LAST, 1, 0);
4263 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix));
4264 tooldir_prefix2 = concat (tooldir_base_prefix, spec_host_machine,
4265 dir_separator_str, NULL);
4267 /* Look for tools relative to the location from which the driver is
4268 running, or, if that is not available, the configured prefix. */
4270 = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
4271 spec_host_machine, dir_separator_str, spec_version,
4272 accel_dir_suffix, dir_separator_str, tooldir_prefix2, NULL);
4273 free (tooldir_prefix2);
4275 add_prefix (&exec_prefixes,
4276 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
4277 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0);
4278 add_prefix (&startfile_prefixes,
4279 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
4280 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1);
4281 free (tooldir_prefix);
4283 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
4284 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
4285 then consider it to relocate with the rest of the GCC installation
4286 if GCC_EXEC_PREFIX is set.
4287 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
4288 if (target_system_root && !target_system_root_changed && gcc_exec_prefix)
4290 char *tmp_prefix = get_relative_prefix (decoded_options[0].arg,
4291 standard_bindir_prefix,
4292 target_system_root);
4293 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
4295 target_system_root = tmp_prefix;
4296 target_system_root_changed = 1;
4301 /* More prefixes are enabled in main, after we read the specs file
4302 and determine whether this is cross-compilation or not. */
4304 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4305 warning (0, "%<-x %s%> after last input file has no effect", spec_lang);
4307 /* Synthesize -fcompare-debug flag from the GCC_COMPARE_DEBUG
4308 environment variable. */
4309 if (compare_debug == 2 || compare_debug == 3)
4311 const char *opt = concat ("-fcompare-debug=", compare_debug_opt, NULL);
4312 save_switch (opt, 0, NULL, false, true);
4316 /* Ensure we only invoke each subprocess once. */
4317 if (print_subprocess_help || print_help_list || print_version)
4321 /* Create a dummy input file, so that we can pass
4322 the help option on to the various sub-processes. */
4323 add_infile ("help-dummy", "c");
4327 switches[n_switches].part1 = 0;
4329 infiles[n_infiles].name = 0;
4332 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4333 and place that in the environment. */
4336 set_collect_gcc_options (void)
4341 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4343 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4344 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4347 for (i = 0; (int) i < n_switches; i++)
4349 const char *const *args;
4352 obstack_grow (&collect_obstack, " ", 1);
4356 /* Ignore elided switches. */
4357 if ((switches[i].live_cond
4358 & (SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC))
4362 obstack_grow (&collect_obstack, "'-", 2);
4363 q = switches[i].part1;
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);
4373 for (args = switches[i].args; args && *args; args++)
4375 obstack_grow (&collect_obstack, " '", 2);
4377 while ((p = strchr (q, '\'')))
4379 obstack_grow (&collect_obstack, q, p - q);
4380 obstack_grow (&collect_obstack, "'\\''", 4);
4383 obstack_grow (&collect_obstack, q, strlen (q));
4384 obstack_grow (&collect_obstack, "'", 1);
4387 obstack_grow (&collect_obstack, "\0", 1);
4388 xputenv (XOBFINISH (&collect_obstack, char *));
4391 /* Process a spec string, accumulating and running commands. */
4393 /* These variables describe the input file name.
4394 input_file_number is the index on outfiles of this file,
4395 so that the output file name can be stored for later use by %o.
4396 input_basename is the start of the part of the input file
4397 sans all directory names, and basename_length is the number
4398 of characters starting there excluding the suffix .c or whatever. */
4400 static const char *gcc_input_filename;
4401 static int input_file_number;
4402 size_t input_filename_length;
4403 static int basename_length;
4404 static int suffixed_basename_length;
4405 static const char *input_basename;
4406 static const char *input_suffix;
4407 #ifndef HOST_LACKS_INODE_NUMBERS
4408 static struct stat input_stat;
4410 static int input_stat_set;
4412 /* The compiler used to process the current input file. */
4413 static struct compiler *input_file_compiler;
4415 /* These are variables used within do_spec and do_spec_1. */
4417 /* Nonzero if an arg has been started and not yet terminated
4418 (with space, tab or newline). */
4419 static int arg_going;
4421 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4422 is a temporary file name. */
4423 static int delete_this_arg;
4425 /* Nonzero means %w has been seen; the next arg to be terminated
4426 is the output file name of this compilation. */
4427 static int this_is_output_file;
4429 /* Nonzero means %s has been seen; the next arg to be terminated
4430 is the name of a library file and we should try the standard
4431 search dirs for it. */
4432 static int this_is_library_file;
4434 /* Nonzero means %T has been seen; the next arg to be terminated
4435 is the name of a linker script and we should try all of the
4436 standard search dirs for it. If it is found insert a --script
4437 command line switch and then substitute the full path in place,
4438 otherwise generate an error message. */
4439 static int this_is_linker_script;
4441 /* Nonzero means that the input of this command is coming from a pipe. */
4442 static int input_from_pipe;
4444 /* Nonnull means substitute this for any suffix when outputting a switches
4446 static const char *suffix_subst;
4448 /* If there is an argument being accumulated, terminate it and store it. */
4451 end_going_arg (void)
4457 obstack_1grow (&obstack, 0);
4458 string = XOBFINISH (&obstack, const char *);
4459 if (this_is_library_file)
4460 string = find_file (string);
4461 if (this_is_linker_script)
4463 char * full_script_path = find_a_file (&startfile_prefixes, string, R_OK, true);
4465 if (full_script_path == NULL)
4467 error ("unable to locate default linker script %qs in the library search paths", string);
4468 /* Script was not found on search path. */
4471 store_arg ("--script", false, false);
4472 string = full_script_path;
4474 store_arg (string, delete_this_arg, this_is_output_file);
4475 if (this_is_output_file)
4476 outfiles[input_file_number] = string;
4482 /* Parse the WRAPPER string which is a comma separated list of the command line
4483 and insert them into the beginning of argbuf. */
4486 insert_wrapper (const char *wrapper)
4490 char *buf = xstrdup (wrapper);
4492 unsigned int old_length = argbuf.length ();
4500 while ((p = strchr (p, ',')) != NULL);
4502 argbuf.safe_grow (old_length + n);
4503 memmove (argbuf.address () + n,
4505 old_length * sizeof (const_char_p));
4519 while ((p = strchr (p, ',')) != NULL);
4520 gcc_assert (i == n);
4523 /* Process the spec SPEC and run the commands specified therein.
4524 Returns 0 if the spec is successfully processed; -1 if failed. */
4527 do_spec (const char *spec)
4531 value = do_spec_2 (spec);
4533 /* Force out any unfinished command.
4534 If -pipe, this forces out the last command if it ended in `|'. */
4537 if (argbuf.length () > 0
4538 && !strcmp (argbuf.last (), "|"))
4541 set_collect_gcc_options ();
4543 if (argbuf.length () > 0)
4551 do_spec_2 (const char *spec)
4557 delete_this_arg = 0;
4558 this_is_output_file = 0;
4559 this_is_library_file = 0;
4560 this_is_linker_script = 0;
4561 input_from_pipe = 0;
4562 suffix_subst = NULL;
4564 result = do_spec_1 (spec, 0, NULL);
4572 /* Process the given spec string and add any new options to the end
4573 of the switches/n_switches array. */
4576 do_option_spec (const char *name, const char *spec)
4578 unsigned int i, value_count, value_len;
4579 const char *p, *q, *value;
4580 char *tmp_spec, *tmp_spec_p;
4582 if (configure_default_options[0].name == NULL)
4585 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4586 if (strcmp (configure_default_options[i].name, name) == 0)
4588 if (i == ARRAY_SIZE (configure_default_options))
4591 value = configure_default_options[i].value;
4592 value_len = strlen (value);
4594 /* Compute the size of the final spec. */
4597 while ((p = strstr (p, "%(VALUE)")) != NULL)
4603 /* Replace each %(VALUE) by the specified value. */
4604 tmp_spec = (char *) alloca (strlen (spec) + 1
4605 + value_count * (value_len - strlen ("%(VALUE)")));
4606 tmp_spec_p = tmp_spec;
4608 while ((p = strstr (q, "%(VALUE)")) != NULL)
4610 memcpy (tmp_spec_p, q, p - q);
4611 tmp_spec_p = tmp_spec_p + (p - q);
4612 memcpy (tmp_spec_p, value, value_len);
4613 tmp_spec_p += value_len;
4614 q = p + strlen ("%(VALUE)");
4616 strcpy (tmp_spec_p, q);
4618 do_self_spec (tmp_spec);
4621 /* Process the given spec string and add any new options to the end
4622 of the switches/n_switches array. */
4625 do_self_spec (const char *spec)
4630 do_spec_1 (" ", 0, NULL);
4632 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4633 do_self_specs adds the replacements to switches array, so it shouldn't
4634 be processed afterwards. */
4635 for (i = 0; i < n_switches; i++)
4636 if ((switches[i].live_cond & SWITCH_IGNORE))
4637 switches[i].live_cond |= SWITCH_IGNORE_PERMANENTLY;
4639 if (argbuf.length () > 0)
4641 const char **argbuf_copy;
4642 struct cl_decoded_option *decoded_options;
4643 struct cl_option_handlers handlers;
4644 unsigned int decoded_options_count;
4647 /* Create a copy of argbuf with a dummy argv[0] entry for
4648 decode_cmdline_options_to_array. */
4649 argbuf_copy = XNEWVEC (const char *,
4650 argbuf.length () + 1);
4651 argbuf_copy[0] = "";
4652 memcpy (argbuf_copy + 1, argbuf.address (),
4653 argbuf.length () * sizeof (const char *));
4655 decode_cmdline_options_to_array (argbuf.length () + 1,
4657 CL_DRIVER, &decoded_options,
4658 &decoded_options_count);
4661 set_option_handlers (&handlers);
4663 for (j = 1; j < decoded_options_count; j++)
4665 switch (decoded_options[j].opt_index)
4667 case OPT_SPECIAL_input_file:
4668 /* Specs should only generate options, not input
4670 if (strcmp (decoded_options[j].arg, "-") != 0)
4671 fatal_error (input_location,
4672 "switch %qs does not start with %<-%>",
4673 decoded_options[j].arg);
4675 fatal_error (input_location,
4676 "spec-generated switch is just %<-%>");
4679 case OPT_fcompare_debug_second:
4680 case OPT_fcompare_debug:
4681 case OPT_fcompare_debug_:
4683 /* Avoid duplicate processing of some options from
4684 compare-debug specs; just save them here. */
4685 save_switch (decoded_options[j].canonical_option[0],
4686 (decoded_options[j].canonical_option_num_elements
4688 &decoded_options[j].canonical_option[1], false, true);
4692 read_cmdline_option (&global_options, &global_options_set,
4693 decoded_options + j, UNKNOWN_LOCATION,
4694 CL_DRIVER, &handlers, global_dc);
4700 switches[n_switches].part1 = 0;
4704 /* Callback for processing %D and %I specs. */
4706 struct spec_path_info {
4711 bool separate_options;
4715 spec_path (char *path, void *data)
4717 struct spec_path_info *info = (struct spec_path_info *) data;
4721 if (info->omit_relative && !IS_ABSOLUTE_PATH (path))
4724 if (info->append_len != 0)
4726 len = strlen (path);
4727 memcpy (path + len, info->append, info->append_len + 1);
4730 if (!is_directory (path, true))
4733 do_spec_1 (info->option, 1, NULL);
4734 if (info->separate_options)
4735 do_spec_1 (" ", 0, NULL);
4737 if (info->append_len == 0)
4739 len = strlen (path);
4740 save = path[len - 1];
4741 if (IS_DIR_SEPARATOR (path[len - 1]))
4742 path[len - 1] = '\0';
4745 do_spec_1 (path, 1, NULL);
4746 do_spec_1 (" ", 0, NULL);
4748 /* Must not damage the original path. */
4749 if (info->append_len == 0)
4750 path[len - 1] = save;
4755 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4759 create_at_file (char **argv)
4761 char *temp_file = make_temp_file ("");
4762 char *at_argument = concat ("@", temp_file, NULL);
4763 FILE *f = fopen (temp_file, "w");
4767 fatal_error (input_location, "could not open temporary response file %s",
4770 status = writeargv (argv, f);
4773 fatal_error (input_location,
4774 "could not write to temporary response file %s",
4777 status = fclose (f);
4780 fatal_error (input_location, "could not close temporary response file %s",
4783 store_arg (at_argument, 0, 0);
4785 record_temp_file (temp_file, !save_temps_flag, !save_temps_flag);
4788 /* True if we should compile INFILE. */
4791 compile_input_file_p (struct infile *infile)
4793 if ((!infile->language) || (infile->language[0] != '*'))
4794 if (infile->incompiler == input_file_compiler)
4799 /* Process each member of VEC as a spec. */
4802 do_specs_vec (vec<char_p> vec)
4807 FOR_EACH_VEC_ELT (vec, ix, opt)
4809 do_spec_1 (opt, 1, NULL);
4810 /* Make each accumulated option a separate argument. */
4811 do_spec_1 (" ", 0, NULL);
4815 /* Process the sub-spec SPEC as a portion of a larger spec.
4816 This is like processing a whole spec except that we do
4817 not initialize at the beginning and we do not supply a
4818 newline by default at the end.
4819 INSWITCH nonzero means don't process %-sequences in SPEC;
4820 in this case, % is treated as an ordinary character.
4821 This is used while substituting switches.
4822 INSWITCH nonzero also causes SPC not to terminate an argument.
4824 Value is zero unless a line was finished
4825 and the command on that line reported an error. */
4828 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4830 const char *p = spec;
4835 /* If it's an empty string argument to a switch, keep it as is. */
4836 if (inswitch && !*p)
4840 /* If substituting a switch, treat all chars like letters.
4841 Otherwise, NL, SPC, TAB and % are special. */
4842 switch (inswitch ? 'a' : c)
4847 if (argbuf.length () > 0
4848 && !strcmp (argbuf.last (), "|"))
4850 /* A `|' before the newline means use a pipe here,
4851 but only if -pipe was specified.
4852 Otherwise, execute now and don't pass the `|' as an arg. */
4855 input_from_pipe = 1;
4862 set_collect_gcc_options ();
4864 if (argbuf.length () > 0)
4870 /* Reinitialize for a new command, and for a new argument. */
4873 delete_this_arg = 0;
4874 this_is_output_file = 0;
4875 this_is_library_file = 0;
4876 this_is_linker_script = 0;
4877 input_from_pipe = 0;
4884 obstack_1grow (&obstack, c);
4892 /* Reinitialize for a new argument. */
4893 delete_this_arg = 0;
4894 this_is_output_file = 0;
4895 this_is_library_file = 0;
4896 this_is_linker_script = 0;
4903 fatal_error (input_location, "spec %qs invalid", spec);
4906 if (save_temps_length)
4907 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4909 obstack_grow (&obstack, input_basename, basename_length);
4910 if (compare_debug < 0)
4911 obstack_grow (&obstack, ".gk", 3);
4916 if (save_temps_length)
4917 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4919 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4920 if (compare_debug < 0)
4921 obstack_grow (&obstack, ".gk", 3);
4926 delete_this_arg = 2;
4929 /* Dump out the directories specified with LIBRARY_PATH,
4930 followed by the absolute directories
4931 that we search for startfiles. */
4934 struct spec_path_info info;
4937 info.append_len = 0;
4938 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4939 /* Used on systems which record the specified -L dirs
4940 and use them to search for dynamic linking.
4941 Relative directories always come from -B,
4942 and it is better not to use them for searching
4943 at run time. In particular, stage1 loses. */
4944 info.omit_relative = true;
4946 info.omit_relative = false;
4948 info.separate_options = false;
4950 for_each_path (&startfile_prefixes, true, 0, spec_path, &info);
4955 /* %efoo means report an error with `foo' as error message
4956 and don't execute any more commands for this file. */
4960 while (*p != 0 && *p != '\n')
4962 buf = (char *) alloca (p - q + 1);
4963 strncpy (buf, q, p - q);
4965 error ("%s", _(buf));
4970 /* %nfoo means report a notice with `foo' on stderr. */
4974 while (*p != 0 && *p != '\n')
4976 buf = (char *) alloca (p - q + 1);
4977 strncpy (buf, q, p - q);
4979 inform (0, "%s", _(buf));
4989 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4990 defined, and it is not a directory, and it is
4991 writable, use it. Otherwise, treat this like any
4992 other temporary file. */
4994 if ((!save_temps_flag)
4995 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4996 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4998 obstack_grow (&obstack, HOST_BIT_BUCKET,
4999 strlen (HOST_BIT_BUCKET));
5000 delete_this_arg = 0;
5005 goto create_temp_file;
5009 obstack_1grow (&obstack, '-');
5010 delete_this_arg = 0;
5013 /* consume suffix */
5014 while (*p == '.' || ISALNUM ((unsigned char) *p))
5016 if (p[0] == '%' && p[1] == 'O')
5021 goto create_temp_file;
5025 /* consume suffix */
5026 while (*p == '.' || ISALNUM ((unsigned char) *p))
5028 if (p[0] == '%' && p[1] == 'O')
5033 goto create_temp_file;
5039 struct temp_name *t;
5041 const char *suffix = p;
5042 char *saved_suffix = NULL;
5044 while (*p == '.' || ISALNUM ((unsigned char) *p))
5046 suffix_length = p - suffix;
5047 if (p[0] == '%' && p[1] == 'O')
5050 /* We don't support extra suffix characters after %O. */
5051 if (*p == '.' || ISALNUM ((unsigned char) *p))
5052 fatal_error (input_location,
5053 "spec %qs has invalid %<%%0%c%>", spec, *p);
5054 if (suffix_length == 0)
5055 suffix = TARGET_OBJECT_SUFFIX;
5059 = XNEWVEC (char, suffix_length
5060 + strlen (TARGET_OBJECT_SUFFIX) + 1);
5061 strncpy (saved_suffix, suffix, suffix_length);
5062 strcpy (saved_suffix + suffix_length,
5063 TARGET_OBJECT_SUFFIX);
5065 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
5068 if (compare_debug < 0)
5070 suffix = concat (".gk", suffix, NULL);
5074 /* If -save-temps=obj and -o were specified, use that for the
5076 if (save_temps_length)
5079 temp_filename_length
5080 = save_temps_length + suffix_length + 1;
5081 tmp = (char *) alloca (temp_filename_length);
5082 memcpy (tmp, save_temps_prefix, save_temps_length);
5083 memcpy (tmp + save_temps_length, suffix, suffix_length);
5084 tmp[save_temps_length + suffix_length] = '\0';
5085 temp_filename = save_string (tmp, save_temps_length
5087 obstack_grow (&obstack, temp_filename,
5088 temp_filename_length);
5090 delete_this_arg = 0;
5094 /* If the gcc_input_filename has the same suffix specified
5095 for the %g, %u, or %U, and -save-temps is specified,
5096 we could end up using that file as an intermediate
5097 thus clobbering the user's source file (.e.g.,
5098 gcc -save-temps foo.s would clobber foo.s with the
5099 output of cpp0). So check for this condition and
5100 generate a temp file as the intermediate. */
5102 if (save_temps_flag)
5105 temp_filename_length = basename_length + suffix_length + 1;
5106 tmp = (char *) alloca (temp_filename_length);
5107 memcpy (tmp, input_basename, basename_length);
5108 memcpy (tmp + basename_length, suffix, suffix_length);
5109 tmp[basename_length + suffix_length] = '\0';
5110 temp_filename = tmp;
5112 if (filename_cmp (temp_filename, gcc_input_filename) != 0)
5114 #ifndef HOST_LACKS_INODE_NUMBERS
5115 struct stat st_temp;
5117 /* Note, set_input() resets input_stat_set to 0. */
5118 if (input_stat_set == 0)
5120 input_stat_set = stat (gcc_input_filename,
5122 if (input_stat_set >= 0)
5126 /* If we have the stat for the gcc_input_filename
5127 and we can do the stat for the temp_filename
5128 then the they could still refer to the same
5129 file if st_dev/st_ino's are the same. */
5130 if (input_stat_set != 1
5131 || stat (temp_filename, &st_temp) < 0
5132 || input_stat.st_dev != st_temp.st_dev
5133 || input_stat.st_ino != st_temp.st_ino)
5135 /* Just compare canonical pathnames. */
5136 char* input_realname = lrealpath (gcc_input_filename);
5137 char* temp_realname = lrealpath (temp_filename);
5138 bool files_differ = filename_cmp (input_realname, temp_realname);
5139 free (input_realname);
5140 free (temp_realname);
5144 temp_filename = save_string (temp_filename,
5145 temp_filename_length + 1);
5146 obstack_grow (&obstack, temp_filename,
5147 temp_filename_length);
5149 delete_this_arg = 0;
5155 /* See if we already have an association of %g/%u/%U and
5157 for (t = temp_names; t; t = t->next)
5158 if (t->length == suffix_length
5159 && strncmp (t->suffix, suffix, suffix_length) == 0
5160 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
5163 /* Make a new association if needed. %u and %j
5165 if (t == 0 || c == 'u' || c == 'j')
5169 t = XNEW (struct temp_name);
5170 t->next = temp_names;
5173 t->length = suffix_length;
5176 t->suffix = saved_suffix;
5177 saved_suffix = NULL;
5180 t->suffix = save_string (suffix, suffix_length);
5181 t->unique = (c == 'u' || c == 'U' || c == 'j');
5182 temp_filename = make_temp_file (t->suffix);
5183 temp_filename_length = strlen (temp_filename);
5184 t->filename = temp_filename;
5185 t->filename_length = temp_filename_length;
5188 free (saved_suffix);
5190 obstack_grow (&obstack, t->filename, t->filename_length);
5191 delete_this_arg = 1;
5199 if (at_file_supplied)
5201 /* We are going to expand `%i' to `@FILE', where FILE
5202 is a newly-created temporary filename. The filenames
5203 that would usually be expanded in place of %o will be
5204 written to the temporary file. */
5209 for (i = 0; i < n_infiles; i++)
5210 if (compile_input_file_p (&infiles[i]))
5213 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
5215 /* Copy the strings over. */
5216 for (i = 0, j = 0; i < n_infiles; i++)
5217 if (compile_input_file_p (&infiles[i]))
5219 argv[j] = CONST_CAST (char *, infiles[i].name);
5220 infiles[i].compiled = true;
5225 create_at_file (argv);
5228 for (i = 0; (int) i < n_infiles; i++)
5229 if (compile_input_file_p (&infiles[i]))
5231 store_arg (infiles[i].name, 0, 0);
5232 infiles[i].compiled = true;
5237 obstack_grow (&obstack, gcc_input_filename,
5238 input_filename_length);
5245 struct spec_path_info info;
5249 do_spec_1 ("-imultilib", 1, NULL);
5250 /* Make this a separate argument. */
5251 do_spec_1 (" ", 0, NULL);
5252 do_spec_1 (multilib_dir, 1, NULL);
5253 do_spec_1 (" ", 0, NULL);
5258 do_spec_1 ("-imultiarch", 1, NULL);
5259 /* Make this a separate argument. */
5260 do_spec_1 (" ", 0, NULL);
5261 do_spec_1 (multiarch_dir, 1, NULL);
5262 do_spec_1 (" ", 0, NULL);
5265 if (gcc_exec_prefix)
5267 do_spec_1 ("-iprefix", 1, NULL);
5268 /* Make this a separate argument. */
5269 do_spec_1 (" ", 0, NULL);
5270 do_spec_1 (gcc_exec_prefix, 1, NULL);
5271 do_spec_1 (" ", 0, NULL);
5274 if (target_system_root_changed ||
5275 (target_system_root && target_sysroot_hdrs_suffix))
5277 do_spec_1 ("-isysroot", 1, NULL);
5278 /* Make this a separate argument. */
5279 do_spec_1 (" ", 0, NULL);
5280 do_spec_1 (target_system_root, 1, NULL);
5281 if (target_sysroot_hdrs_suffix)
5282 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
5283 do_spec_1 (" ", 0, NULL);
5286 info.option = "-isystem";
5287 info.append = "include";
5288 info.append_len = strlen (info.append);
5289 info.omit_relative = false;
5290 info.separate_options = true;
5292 for_each_path (&include_prefixes, false, info.append_len,
5295 info.append = "include-fixed";
5296 if (*sysroot_hdrs_suffix_spec)
5297 info.append = concat (info.append, dir_separator_str,
5298 multilib_dir, NULL);
5299 info.append_len = strlen (info.append);
5300 for_each_path (&include_prefixes, false, info.append_len,
5307 int max = n_infiles;
5308 max += lang_specific_extra_outfiles;
5310 if (HAVE_GNU_LD && at_file_supplied)
5312 /* We are going to expand `%o' to `@FILE', where FILE
5313 is a newly-created temporary filename. The filenames
5314 that would usually be expanded in place of %o will be
5315 written to the temporary file. */
5320 /* Convert OUTFILES into a form suitable for writeargv. */
5322 /* Determine how many are non-NULL. */
5323 for (n_files = 0, i = 0; i < max; i++)
5324 n_files += outfiles[i] != NULL;
5326 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
5328 /* Copy the strings over. */
5329 for (i = 0, j = 0; i < max; i++)
5332 argv[j] = CONST_CAST (char *, outfiles[i]);
5337 create_at_file (argv);
5340 for (i = 0; i < max; i++)
5342 store_arg (outfiles[i], 0, 0);
5347 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
5352 this_is_library_file = 1;
5356 this_is_linker_script = 1;
5360 outfiles[input_file_number] = NULL;
5364 this_is_output_file = 1;
5369 unsigned int cur_index = argbuf.length ();
5370 /* Handle the {...} following the %W. */
5372 fatal_error (input_location,
5373 "spec %qs has invalid %<%%W%c%>", spec, *p);
5374 p = handle_braces (p + 1);
5378 /* If any args were output, mark the last one for deletion
5380 if (argbuf.length () != cur_index)
5381 record_temp_file (argbuf.last (), 0, 1);
5385 /* %x{OPTION} records OPTION for %X to output. */
5393 /* Skip past the option value and make a copy. */
5395 fatal_error (input_location,
5396 "spec %qs has invalid %<%%x%c%>", spec, *p);
5399 string = save_string (p1 + 1, p - p1 - 2);
5401 /* See if we already recorded this option. */
5402 FOR_EACH_VEC_ELT (linker_options, ix, opt)
5403 if (! strcmp (string, opt))
5409 /* This option is new; add it. */
5410 add_linker_option (string, strlen (string));
5415 /* Dump out the options accumulated previously using %x. */
5417 do_specs_vec (linker_options);
5420 /* Dump out the options accumulated previously using -Wa,. */
5422 do_specs_vec (assembler_options);
5425 /* Dump out the options accumulated previously using -Wp,. */
5427 do_specs_vec (preprocessor_options);
5430 /* Here are digits and numbers that just process
5431 a certain constant string as a spec. */
5434 value = do_spec_1 (cc1_spec, 0, NULL);
5440 value = do_spec_1 (cc1plus_spec, 0, NULL);
5446 value = do_spec_1 (asm_spec, 0, NULL);
5452 value = do_spec_1 (asm_final_spec, 0, NULL);
5459 const char *const spec
5460 = (input_file_compiler->cpp_spec
5461 ? input_file_compiler->cpp_spec
5463 value = do_spec_1 (spec, 0, NULL);
5470 value = do_spec_1 (endfile_spec, 0, NULL);
5476 value = do_spec_1 (link_spec, 0, NULL);
5482 value = do_spec_1 (lib_spec, 0, NULL);
5488 if (multilib_os_dir == NULL)
5489 obstack_1grow (&obstack, '.');
5491 obstack_grow (&obstack, multilib_os_dir,
5492 strlen (multilib_os_dir));
5496 value = do_spec_1 (libgcc_spec, 0, NULL);
5502 /* We assume there is a directory
5503 separator at the end of this string. */
5504 if (target_system_root)
5506 obstack_grow (&obstack, target_system_root,
5507 strlen (target_system_root));
5508 if (target_sysroot_suffix)
5509 obstack_grow (&obstack, target_sysroot_suffix,
5510 strlen (target_sysroot_suffix));
5515 value = do_spec_1 (startfile_spec, 0, NULL);
5520 /* Here we define characters other than letters and digits. */
5523 p = handle_braces (p);
5529 p = handle_spec_function (p, NULL);
5535 obstack_1grow (&obstack, '%');
5542 while (p[len] && p[len] != ' ' && p[len] != '%')
5544 suffix_subst = save_string (p - 1, len + 1);
5549 /* Henceforth ignore the option(s) matching the pattern
5555 int have_wildcard = 0;
5560 switch_option = SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC;
5562 switch_option = SWITCH_IGNORE;
5564 while (p[len] && p[len] != ' ' && p[len] != '\t')
5567 if (p[len-1] == '*')
5570 for (i = 0; i < n_switches; i++)
5571 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5572 && (have_wildcard || switches[i].part1[len] == '\0'))
5574 switches[i].live_cond |= switch_option;
5575 /* User switch be validated from validate_all_switches.
5576 when the definition is seen from the spec file.
5577 If not defined anywhere, will be rejected. */
5578 if (switches[i].known)
5579 switches[i].validated = true;
5587 if (soft_matched_part)
5589 if (soft_matched_part[0])
5590 do_spec_1 (soft_matched_part, 1, NULL);
5591 /* Only insert a space after the substitution if it is at the
5592 end of the current sequence. So if:
5594 "%{foo=*:bar%*}%{foo=*:one%*two}"
5596 matches -foo=hello then it will produce:
5598 barhello onehellotwo
5600 if (*p == 0 || *p == '}')
5601 do_spec_1 (" ", 0, NULL);
5604 /* Catch the case where a spec string contains something like
5605 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5606 hand side of the :. */
5607 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5610 /* Process a string found as the value of a spec given by name.
5611 This feature allows individual machine descriptions
5612 to add and use their own specs. */
5615 const char *name = p;
5616 struct spec_list *sl;
5619 /* The string after the S/P is the name of a spec that is to be
5621 while (*p && *p != ')')
5624 /* See if it's in the list. */
5625 for (len = p - name, sl = specs; sl; sl = sl->next)
5626 if (sl->name_len == len && !strncmp (sl->name, name, len))
5628 name = *(sl->ptr_spec);
5630 fnotice (stderr, "Processing spec (%s), which is '%s'\n",
5638 value = do_spec_1 (name, 0, NULL);
5643 /* Discard the closing paren. */
5650 error ("spec failure: unrecognized spec option %qc", c);
5656 /* Backslash: treat next character as ordinary. */
5661 /* Ordinary character: put it into the current argument. */
5662 obstack_1grow (&obstack, c);
5666 /* End of string. If we are processing a spec function, we need to
5667 end any pending argument. */
5668 if (processing_spec_function)
5674 /* Look up a spec function. */
5676 static const struct spec_function *
5677 lookup_spec_function (const char *name)
5679 const struct spec_function *sf;
5681 for (sf = static_spec_functions; sf->name != NULL; sf++)
5682 if (strcmp (sf->name, name) == 0)
5688 /* Evaluate a spec function. */
5691 eval_spec_function (const char *func, const char *args)
5693 const struct spec_function *sf;
5694 const char *funcval;
5696 /* Saved spec processing context. */
5697 vec<const_char_p> save_argbuf;
5700 int save_delete_this_arg;
5701 int save_this_is_output_file;
5702 int save_this_is_library_file;
5703 int save_input_from_pipe;
5704 int save_this_is_linker_script;
5705 const char *save_suffix_subst;
5707 int save_growing_size;
5708 void *save_growing_value = NULL;
5710 sf = lookup_spec_function (func);
5712 fatal_error (input_location, "unknown spec function %qs", func);
5714 /* Push the spec processing context. */
5715 save_argbuf = argbuf;
5717 save_arg_going = arg_going;
5718 save_delete_this_arg = delete_this_arg;
5719 save_this_is_output_file = this_is_output_file;
5720 save_this_is_library_file = this_is_library_file;
5721 save_this_is_linker_script = this_is_linker_script;
5722 save_input_from_pipe = input_from_pipe;
5723 save_suffix_subst = suffix_subst;
5725 /* If we have some object growing now, finalize it so the args and function
5726 eval proceed from a cleared context. This is needed to prevent the first
5727 constructed arg from mistakenly including the growing value. We'll push
5728 this value back on the obstack once the function evaluation is done, to
5729 restore a consistent processing context for our caller. This is fine as
5730 the address of growing objects isn't guaranteed to remain stable until
5731 they are finalized, and we expect this situation to be rare enough for
5732 the extra copy not to be an issue. */
5733 save_growing_size = obstack_object_size (&obstack);
5734 if (save_growing_size > 0)
5735 save_growing_value = obstack_finish (&obstack);
5737 /* Create a new spec processing context, and build the function
5741 if (do_spec_2 (args) < 0)
5742 fatal_error (input_location, "error in args to spec function %qs", func);
5744 /* argbuf_index is an index for the next argument to be inserted, and
5745 so contains the count of the args already inserted. */
5747 funcval = (*sf->func) (argbuf.length (),
5750 /* Pop the spec processing context. */
5752 argbuf = save_argbuf;
5754 arg_going = save_arg_going;
5755 delete_this_arg = save_delete_this_arg;
5756 this_is_output_file = save_this_is_output_file;
5757 this_is_library_file = save_this_is_library_file;
5758 this_is_linker_script = save_this_is_linker_script;
5759 input_from_pipe = save_input_from_pipe;
5760 suffix_subst = save_suffix_subst;
5762 if (save_growing_size > 0)
5763 obstack_grow (&obstack, save_growing_value, save_growing_size);
5768 /* Handle a spec function call of the form:
5772 ARGS is processed as a spec in a separate context and split into an
5773 argument vector in the normal fashion. The function returns a string
5774 containing a spec which we then process in the caller's context, or
5775 NULL if no processing is required.
5777 If RETVAL_NONNULL is not NULL, then store a bool whether function
5778 returned non-NULL. */
5781 handle_spec_function (const char *p, bool *retval_nonnull)
5784 const char *endp, *funcval;
5787 processing_spec_function++;
5789 /* Get the function name. */
5790 for (endp = p; *endp != '\0'; endp++)
5792 if (*endp == '(') /* ) */
5794 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5795 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5796 fatal_error (input_location, "malformed spec function name");
5798 if (*endp != '(') /* ) */
5799 fatal_error (input_location, "no arguments for spec function");
5800 func = save_string (p, endp - p);
5803 /* Get the arguments. */
5804 for (count = 0; *endp != '\0'; endp++)
5813 else if (*endp == '(') /* ) */
5818 fatal_error (input_location, "malformed spec function arguments");
5819 args = save_string (p, endp - p);
5822 /* p now points to just past the end of the spec function expression. */
5824 funcval = eval_spec_function (func, args);
5825 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5828 *retval_nonnull = funcval != NULL;
5833 processing_spec_function--;
5838 /* Inline subroutine of handle_braces. Returns true if the current
5839 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5841 input_suffix_matches (const char *atom, const char *end_atom)
5843 return (input_suffix
5844 && !strncmp (input_suffix, atom, end_atom - atom)
5845 && input_suffix[end_atom - atom] == '\0');
5848 /* Subroutine of handle_braces. Returns true if the current
5849 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5851 input_spec_matches (const char *atom, const char *end_atom)
5853 return (input_file_compiler
5854 && input_file_compiler->suffix
5855 && input_file_compiler->suffix[0] != '\0'
5856 && !strncmp (input_file_compiler->suffix + 1, atom,
5858 && input_file_compiler->suffix[end_atom - atom + 1] == '\0');
5861 /* Subroutine of handle_braces. Returns true if a switch
5862 matching the atom bracketed by ATOM and END_ATOM appeared on the
5865 switch_matches (const char *atom, const char *end_atom, int starred)
5868 int len = end_atom - atom;
5869 int plen = starred ? len : -1;
5871 for (i = 0; i < n_switches; i++)
5872 if (!strncmp (switches[i].part1, atom, len)
5873 && (starred || switches[i].part1[len] == '\0')
5874 && check_live_switch (i, plen))
5877 /* Check if a switch with separated form matching the atom.
5878 We check -D and -U switches. */
5879 else if (switches[i].args != 0)
5881 if ((*switches[i].part1 == 'D' || *switches[i].part1 == 'U')
5882 && *switches[i].part1 == atom[0])
5884 if (!strncmp (switches[i].args[0], &atom[1], len - 1)
5885 && (starred || (switches[i].part1[1] == '\0'
5886 && switches[i].args[0][len - 1] == '\0'))
5887 && check_live_switch (i, (starred ? 1 : -1)))
5895 /* Inline subroutine of handle_braces. Mark all of the switches which
5896 match ATOM (extends to END_ATOM; STARRED indicates whether there
5897 was a star after the atom) for later processing. */
5899 mark_matching_switches (const char *atom, const char *end_atom, int starred)
5902 int len = end_atom - atom;
5903 int plen = starred ? len : -1;
5905 for (i = 0; i < n_switches; i++)
5906 if (!strncmp (switches[i].part1, atom, len)
5907 && (starred || switches[i].part1[len] == '\0')
5908 && check_live_switch (i, plen))
5909 switches[i].ordering = 1;
5912 /* Inline subroutine of handle_braces. Process all the currently
5913 marked switches through give_switch, and clear the marks. */
5915 process_marked_switches (void)
5919 for (i = 0; i < n_switches; i++)
5920 if (switches[i].ordering == 1)
5922 switches[i].ordering = 0;
5927 /* Handle a %{ ... } construct. P points just inside the leading {.
5928 Returns a pointer one past the end of the brace block, or 0
5929 if we call do_spec_1 and that returns -1. */
5932 handle_braces (const char *p)
5934 const char *atom, *end_atom;
5935 const char *d_atom = NULL, *d_end_atom = NULL;
5936 const char *orig = p;
5944 bool a_must_be_last = false;
5945 bool ordered_set = false;
5946 bool disjunct_set = false;
5947 bool disj_matched = false;
5948 bool disj_starred = true;
5949 bool n_way_choice = false;
5950 bool n_way_matched = false;
5952 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5959 /* Scan one "atom" (S in the description above of %{}, possibly
5960 with '!', '.', '@', ',', or '*' modifiers). */
5962 a_is_suffix = false;
5963 a_is_starred = false;
5964 a_is_negated = false;
5965 a_is_spectype = false;
5969 p++, a_is_negated = true;
5972 if (*p == '%' && p[1] == ':')
5976 p = handle_spec_function (p + 2, &a_matched);
5981 p++, a_is_suffix = true;
5983 p++, a_is_spectype = true;
5986 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
5987 || *p == ',' || *p == '.' || *p == '@')
5992 p++, a_is_starred = 1;
5999 /* Substitute the switch(es) indicated by the current atom. */
6001 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
6002 || a_is_spectype || atom == end_atom)
6005 mark_matching_switches (atom, end_atom, a_is_starred);
6008 process_marked_switches ();
6012 /* Substitute some text if the current atom appears as a switch
6014 disjunct_set = true;
6018 if (atom && atom == end_atom)
6020 if (!n_way_choice || disj_matched || *p == '|'
6021 || a_is_negated || a_is_suffix || a_is_spectype
6025 /* An empty term may appear as the last choice of an
6026 N-way choice set; it means "otherwise". */
6027 a_must_be_last = true;
6028 disj_matched = !n_way_matched;
6029 disj_starred = false;
6033 if ((a_is_suffix || a_is_spectype) && a_is_starred)
6037 disj_starred = false;
6039 /* Don't bother testing this atom if we already have a
6041 if (!disj_matched && !n_way_matched)
6044 /* a_matched is already set by handle_spec_function. */;
6045 else if (a_is_suffix)
6046 a_matched = input_suffix_matches (atom, end_atom);
6047 else if (a_is_spectype)
6048 a_matched = input_spec_matches (atom, end_atom);
6050 a_matched = switch_matches (atom, end_atom, a_is_starred);
6052 if (a_matched != a_is_negated)
6054 disj_matched = true;
6056 d_end_atom = end_atom;
6063 /* Found the body, that is, the text to substitute if the
6064 current disjunction matches. */
6065 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
6066 disj_matched && !n_way_matched);
6070 /* If we have an N-way choice, reset state for the next
6074 n_way_choice = true;
6075 n_way_matched |= disj_matched;
6076 disj_matched = false;
6077 disj_starred = true;
6078 d_atom = d_end_atom = NULL;
6087 while (*p++ != '}');
6092 fatal_error (input_location, "braced spec %qs is invalid at %qc", orig, *p);
6097 /* Subroutine of handle_braces. Scan and process a brace substitution body
6098 (X in the description of %{} syntax). P points one past the colon;
6099 ATOM and END_ATOM bracket the first atom which was found to be true
6100 (present) in the current disjunction; STARRED indicates whether all
6101 the atoms in the current disjunction were starred (for syntax validation);
6102 MATCHED indicates whether the disjunction matched or not, and therefore
6103 whether or not the body is to be processed through do_spec_1 or just
6104 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
6108 process_brace_body (const char *p, const char *atom, const char *end_atom,
6109 int starred, int matched)
6111 const char *body, *end_body;
6112 unsigned int nesting_level;
6113 bool have_subst = false;
6115 /* Locate the closing } or ;, honoring nested braces.
6116 Trim trailing whitespace. */
6125 if (!--nesting_level)
6128 else if (*p == ';' && nesting_level == 1)
6130 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
6132 else if (*p == '\0')
6138 while (end_body[-1] == ' ' || end_body[-1] == '\t')
6141 if (have_subst && !starred)
6146 /* Copy the substitution body to permanent storage and execute it.
6147 If have_subst is false, this is a simple matter of running the
6148 body through do_spec_1... */
6149 char *string = save_string (body, end_body - body);
6152 if (do_spec_1 (string, 0, NULL) < 0)
6157 /* ... but if have_subst is true, we have to process the
6158 body once for each matching switch, with %* set to the
6159 variant part of the switch. */
6160 unsigned int hard_match_len = end_atom - atom;
6163 for (i = 0; i < n_switches; i++)
6164 if (!strncmp (switches[i].part1, atom, hard_match_len)
6165 && check_live_switch (i, hard_match_len))
6167 if (do_spec_1 (string, 0,
6168 &switches[i].part1[hard_match_len]) < 0)
6170 /* Pass any arguments this switch has. */
6172 suffix_subst = NULL;
6180 fatal_error (input_location, "braced spec body %qs is invalid", body);
6183 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
6184 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
6185 spec, or -1 if either exact match or %* is used.
6187 A -O switch is obsoleted by a later -O switch. A -f, -g, -m, or -W switch
6188 whose value does not begin with "no-" is obsoleted by the same value
6189 with the "no-", similarly for a switch with the "no-" prefix. */
6192 check_live_switch (int switchnum, int prefix_length)
6194 const char *name = switches[switchnum].part1;
6197 /* If we already processed this switch and determined if it was
6198 live or not, return our past determination. */
6199 if (switches[switchnum].live_cond != 0)
6200 return ((switches[switchnum].live_cond & SWITCH_LIVE) != 0
6201 && (switches[switchnum].live_cond & SWITCH_FALSE) == 0
6202 && (switches[switchnum].live_cond & SWITCH_IGNORE_PERMANENTLY)
6205 /* In the common case of {<at-most-one-letter>*}, a negating
6206 switch would always match, so ignore that case. We will just
6207 send the conflicting switches to the compiler phase. */
6208 if (prefix_length >= 0 && prefix_length <= 1)
6211 /* Now search for duplicate in a manner that depends on the name. */
6215 for (i = switchnum + 1; i < n_switches; i++)
6216 if (switches[i].part1[0] == 'O')
6218 switches[switchnum].validated = true;
6219 switches[switchnum].live_cond = SWITCH_FALSE;
6224 case 'W': case 'f': case 'm': case 'g':
6225 if (! strncmp (name + 1, "no-", 3))
6227 /* We have Xno-YYY, search for XYYY. */
6228 for (i = switchnum + 1; i < n_switches; i++)
6229 if (switches[i].part1[0] == name[0]
6230 && ! strcmp (&switches[i].part1[1], &name[4]))
6232 /* --specs are validated with the validate_switches mechanism. */
6233 if (switches[switchnum].known)
6234 switches[switchnum].validated = true;
6235 switches[switchnum].live_cond = SWITCH_FALSE;
6241 /* We have XYYY, search for Xno-YYY. */
6242 for (i = switchnum + 1; i < n_switches; i++)
6243 if (switches[i].part1[0] == name[0]
6244 && switches[i].part1[1] == 'n'
6245 && switches[i].part1[2] == 'o'
6246 && switches[i].part1[3] == '-'
6247 && !strcmp (&switches[i].part1[4], &name[1]))
6249 /* --specs are validated with the validate_switches mechanism. */
6250 if (switches[switchnum].known)
6251 switches[switchnum].validated = true;
6252 switches[switchnum].live_cond = SWITCH_FALSE;
6259 /* Otherwise the switch is live. */
6260 switches[switchnum].live_cond |= SWITCH_LIVE;
6264 /* Pass a switch to the current accumulating command
6265 in the same form that we received it.
6266 SWITCHNUM identifies the switch; it is an index into
6267 the vector of switches gcc received, which is `switches'.
6268 This cannot fail since it never finishes a command line.
6270 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
6273 give_switch (int switchnum, int omit_first_word)
6275 if ((switches[switchnum].live_cond & SWITCH_IGNORE) != 0)
6278 if (!omit_first_word)
6280 do_spec_1 ("-", 0, NULL);
6281 do_spec_1 (switches[switchnum].part1, 1, NULL);
6284 if (switches[switchnum].args != 0)
6287 for (p = switches[switchnum].args; *p; p++)
6289 const char *arg = *p;
6291 do_spec_1 (" ", 0, NULL);
6294 unsigned length = strlen (arg);
6297 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
6298 if (arg[length] == '.')
6300 (CONST_CAST (char *, arg))[length] = 0;
6304 do_spec_1 (arg, 1, NULL);
6306 (CONST_CAST (char *, arg))[length] = '.';
6307 do_spec_1 (suffix_subst, 1, NULL);
6310 do_spec_1 (arg, 1, NULL);
6314 do_spec_1 (" ", 0, NULL);
6315 switches[switchnum].validated = true;
6318 /* Print GCC configuration (e.g. version, thread model, target,
6319 configuration_arguments) to a given FILE. */
6322 print_configuration (FILE *file)
6327 fnotice (file, "Target: %s\n", spec_machine);
6328 fnotice (file, "Configured with: %s\n", configuration_arguments);
6330 #ifdef THREAD_MODEL_SPEC
6331 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6332 but there's no point in doing all this processing just to get
6333 thread_model back. */
6334 obstack_init (&obstack);
6335 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6336 obstack_1grow (&obstack, '\0');
6337 thrmod = XOBFINISH (&obstack, const char *);
6339 thrmod = thread_model;
6342 fnotice (file, "Thread model: %s\n", thrmod);
6344 /* compiler_version is truncated at the first space when initialized
6345 from version string, so truncate version_string at the first space
6346 before comparing. */
6347 for (n = 0; version_string[n]; n++)
6348 if (version_string[n] == ' ')
6351 if (! strncmp (version_string, compiler_version, n)
6352 && compiler_version[n] == 0)
6353 fnotice (file, "gcc version %s %s\n", version_string,
6356 fnotice (file, "gcc driver version %s %sexecuting gcc version %s\n",
6357 version_string, pkgversion_string, compiler_version);
6361 #define RETRY_ICE_ATTEMPTS 3
6363 /* Returns true if FILE1 and FILE2 contain equivalent data, 0 otherwise. */
6366 files_equal_p (char *file1, char *file2)
6368 struct stat st1, st2;
6371 const int bufsize = 8192;
6372 char *buf = XNEWVEC (char, bufsize);
6374 fd1 = open (file1, O_RDONLY);
6375 fd2 = open (file2, O_RDONLY);
6377 if (fd1 < 0 || fd2 < 0)
6380 if (fstat (fd1, &st1) < 0 || fstat (fd2, &st2) < 0)
6383 if (st1.st_size != st2.st_size)
6386 for (n = st1.st_size; n; n -= len)
6389 if ((int) len > bufsize / 2)
6392 if (read (fd1, buf, len) != (int) len
6393 || read (fd2, buf + bufsize / 2, len) != (int) len)
6398 if (memcmp (buf, buf + bufsize / 2, len) != 0)
6415 /* Check that compiler's output doesn't differ across runs.
6416 TEMP_STDOUT_FILES and TEMP_STDERR_FILES are arrays of files, containing
6417 stdout and stderr for each compiler run. Return true if all of
6418 TEMP_STDOUT_FILES and TEMP_STDERR_FILES are equivalent. */
6421 check_repro (char **temp_stdout_files, char **temp_stderr_files)
6424 for (i = 0; i < RETRY_ICE_ATTEMPTS - 2; ++i)
6426 if (!files_equal_p (temp_stdout_files[i], temp_stdout_files[i + 1])
6427 || !files_equal_p (temp_stderr_files[i], temp_stderr_files[i + 1]))
6429 fnotice (stderr, "The bug is not reproducible, so it is"
6430 " likely a hardware or OS problem.\n");
6434 return i == RETRY_ICE_ATTEMPTS - 2;
6437 enum attempt_status {
6438 ATTEMPT_STATUS_FAIL_TO_RUN,
6439 ATTEMPT_STATUS_SUCCESS,
6444 /* Run compiler with arguments NEW_ARGV to reproduce the ICE, storing stdout
6445 to OUT_TEMP and stderr to ERR_TEMP. If APPEND is TRUE, append to OUT_TEMP
6446 and ERR_TEMP instead of truncating. If EMIT_SYSTEM_INFO is TRUE, also write
6447 GCC configuration into to ERR_TEMP. Return ATTEMPT_STATUS_FAIL_TO_RUN if
6448 compiler failed to run, ATTEMPT_STATUS_ICE if compiled ICE-ed and
6449 ATTEMPT_STATUS_SUCCESS otherwise. */
6451 static enum attempt_status
6452 run_attempt (const char **new_argv, const char *out_temp,
6453 const char *err_temp, int emit_system_info, int append)
6456 if (emit_system_info)
6458 FILE *file_out = fopen (err_temp, "a");
6459 print_configuration (file_out);
6460 fputs ("\n", file_out);
6466 struct pex_obj *pex;
6468 int pex_flags = PEX_USE_PIPES | PEX_LAST;
6469 enum attempt_status status = ATTEMPT_STATUS_FAIL_TO_RUN;
6472 pex_flags |= PEX_STDOUT_APPEND | PEX_STDERR_APPEND;
6474 pex = pex_init (PEX_USE_PIPES, new_argv[0], NULL);
6476 fatal_error (input_location, "pex_init failed: %m");
6478 errmsg = pex_run (pex, pex_flags, new_argv[0],
6479 CONST_CAST2 (char *const *, const char **, &new_argv[1]), out_temp,
6484 fatal_error (input_location, errmsg);
6488 pfatal_with_name (errmsg);
6492 if (!pex_get_status (pex, 1, &exit_status))
6495 switch (WEXITSTATUS (exit_status))
6498 status = ATTEMPT_STATUS_ICE;
6501 case SUCCESS_EXIT_CODE:
6502 status = ATTEMPT_STATUS_SUCCESS;
6514 /* This routine reads lines from IN file, adds C++ style comments
6515 at the begining of each line and writes result into OUT. */
6518 insert_comments (const char *file_in, const char *file_out)
6520 FILE *in = fopen (file_in, "rb");
6521 FILE *out = fopen (file_out, "wb");
6524 bool add_comment = true;
6525 while (fgets (line, sizeof (line), in))
6530 add_comment = strchr (line, '\n') != NULL;
6537 /* This routine adds preprocessed source code into the given ERR_FILE.
6538 To do this, it adds "-E" to NEW_ARGV and execute RUN_ATTEMPT routine to
6539 add information in report file. RUN_ATTEMPT should return
6540 ATTEMPT_STATUS_SUCCESS, in other case we cannot generate the report. */
6543 do_report_bug (const char **new_argv, const int nargs,
6544 char **out_file, char **err_file)
6547 int fd = open (*out_file, O_RDWR | O_APPEND);
6550 write (fd, "\n//", 3);
6551 for (i = 0; i < nargs; i++)
6554 write (fd, new_argv[i], strlen (new_argv[i]));
6556 write (fd, "\n\n", 2);
6558 new_argv[nargs] = "-E";
6559 new_argv[nargs + 1] = NULL;
6561 status = run_attempt (new_argv, *out_file, *err_file, 0, 1);
6563 if (status == ATTEMPT_STATUS_SUCCESS)
6565 fnotice (stderr, "Preprocessed source stored into %s file,"
6566 " please attach this to your bugreport.\n", *out_file);
6567 /* Make sure it is not deleted. */
6573 /* Try to reproduce ICE. If bug is reproducible, generate report .err file
6574 containing GCC configuration, backtrace, compiler's command line options
6575 and preprocessed source code. */
6578 try_generate_repro (const char **argv)
6580 int i, nargs, out_arg = -1, quiet = 0, attempt;
6581 const char **new_argv;
6582 char *temp_files[RETRY_ICE_ATTEMPTS * 2];
6583 char **temp_stdout_files = &temp_files[0];
6584 char **temp_stderr_files = &temp_files[RETRY_ICE_ATTEMPTS];
6586 if (gcc_input_filename == NULL || ! strcmp (gcc_input_filename, "-"))
6589 for (nargs = 0; argv[nargs] != NULL; ++nargs)
6590 /* Only retry compiler ICEs, not preprocessor ones. */
6591 if (! strcmp (argv[nargs], "-E"))
6593 else if (argv[nargs][0] == '-' && argv[nargs][1] == 'o')
6600 /* If the compiler is going to output any time information,
6601 it might varry between invocations. */
6602 else if (! strcmp (argv[nargs], "-quiet"))
6604 else if (! strcmp (argv[nargs], "-ftime-report"))
6607 if (out_arg == -1 || !quiet)
6610 memset (temp_files, '\0', sizeof (temp_files));
6611 new_argv = XALLOCAVEC (const char *, nargs + 4);
6612 memcpy (new_argv, argv, (nargs + 1) * sizeof (const char *));
6613 new_argv[nargs++] = "-frandom-seed=0";
6614 new_argv[nargs++] = "-fdump-noaddr";
6615 new_argv[nargs] = NULL;
6616 if (new_argv[out_arg][2] == '\0')
6617 new_argv[out_arg + 1] = "-";
6619 new_argv[out_arg] = "-o-";
6622 for (attempt = 0; attempt < RETRY_ICE_ATTEMPTS; ++attempt)
6624 int emit_system_info = 0;
6626 temp_stdout_files[attempt] = make_temp_file (".out");
6627 temp_stderr_files[attempt] = make_temp_file (".err");
6629 if (attempt == RETRY_ICE_ATTEMPTS - 1)
6632 emit_system_info = 1;
6635 status = run_attempt (new_argv, temp_stdout_files[attempt],
6636 temp_stderr_files[attempt], emit_system_info,
6639 if (status != ATTEMPT_STATUS_ICE)
6641 fnotice (stderr, "The bug is not reproducible, so it is"
6642 " likely a hardware or OS problem.\n");
6647 if (!check_repro (temp_stdout_files, temp_stderr_files))
6651 /* Insert commented out backtrace into report file. */
6652 char **stderr_commented = &temp_stdout_files[RETRY_ICE_ATTEMPTS - 1];
6653 insert_comments (temp_stderr_files[RETRY_ICE_ATTEMPTS - 1],
6656 /* In final attempt we append compiler options and preprocesssed code to last
6657 generated .out file with configuration and backtrace. */
6658 char **output = &temp_stdout_files[RETRY_ICE_ATTEMPTS - 1];
6659 do_report_bug (new_argv, nargs, stderr_commented, output);
6663 for (i = 0; i < RETRY_ICE_ATTEMPTS * 2; i++)
6666 unlink (temp_stdout_files[i]);
6667 free (temp_stdout_files[i]);
6671 /* Search for a file named NAME trying various prefixes including the
6672 user's -B prefix and some standard ones.
6673 Return the absolute file name found. If nothing is found, return NAME. */
6676 find_file (const char *name)
6678 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true);
6679 return newname ? newname : name;
6682 /* Determine whether a directory exists. If LINKER, return 0 for
6683 certain fixed names not needed by the linker. */
6686 is_directory (const char *path1, bool linker)
6693 /* Ensure the string ends with "/.". The resulting path will be a
6694 directory even if the given path is a symbolic link. */
6695 len1 = strlen (path1);
6696 path = (char *) alloca (3 + len1);
6697 memcpy (path, path1, len1);
6699 if (!IS_DIR_SEPARATOR (cp[-1]))
6700 *cp++ = DIR_SEPARATOR;
6704 /* Exclude directories that the linker is known to search. */
6706 && IS_DIR_SEPARATOR (path[0])
6708 && filename_ncmp (path + 1, "lib", 3) == 0)
6710 && filename_ncmp (path + 1, "usr", 3) == 0
6711 && IS_DIR_SEPARATOR (path[4])
6712 && filename_ncmp (path + 5, "lib", 3) == 0)))
6715 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
6718 /* Set up the various global variables to indicate that we're processing
6719 the input file named FILENAME. */
6722 set_input (const char *filename)
6726 gcc_input_filename = filename;
6727 input_filename_length = strlen (gcc_input_filename);
6728 input_basename = lbasename (gcc_input_filename);
6730 /* Find a suffix starting with the last period,
6731 and set basename_length to exclude that suffix. */
6732 basename_length = strlen (input_basename);
6733 suffixed_basename_length = basename_length;
6734 p = input_basename + basename_length;
6735 while (p != input_basename && *p != '.')
6737 if (*p == '.' && p != input_basename)
6739 basename_length = p - input_basename;
6740 input_suffix = p + 1;
6745 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
6746 we will need to do a stat on the gcc_input_filename. The
6747 INPUT_STAT_SET signals that the stat is needed. */
6751 /* On fatal signals, delete all the temporary files. */
6754 fatal_signal (int signum)
6756 signal (signum, SIG_DFL);
6757 delete_failure_queue ();
6758 delete_temp_files ();
6759 /* Get the same signal again, this time not handled,
6760 so its normal effect occurs. */
6761 kill (getpid (), signum);
6764 /* Compare the contents of the two files named CMPFILE[0] and
6765 CMPFILE[1]. Return zero if they're identical, nonzero
6769 compare_files (char *cmpfile[])
6772 FILE *temp[2] = { NULL, NULL };
6778 void *map[2] = { NULL, NULL };
6780 for (i = 0; i < 2; i++)
6784 if (stat (cmpfile[i], &st) < 0 || !S_ISREG (st.st_mode))
6786 error ("%s: could not determine length of compare-debug file %s",
6787 gcc_input_filename, cmpfile[i]);
6792 length[i] = st.st_size;
6795 if (!ret && length[0] != length[1])
6797 error ("%s: -fcompare-debug failure (length)", gcc_input_filename);
6802 for (i = 0; i < 2; i++)
6804 int fd = open (cmpfile[i], O_RDONLY);
6807 error ("%s: could not open compare-debug file %s",
6808 gcc_input_filename, cmpfile[i]);
6813 map[i] = mmap (NULL, length[i], PROT_READ, MAP_PRIVATE, fd, 0);
6816 if (map[i] == (void *) MAP_FAILED)
6825 if (memcmp (map[0], map[1], length[0]) != 0)
6827 error ("%s: -fcompare-debug failure", gcc_input_filename);
6832 for (i = 0; i < 2; i++)
6834 munmap ((caddr_t) map[i], length[i]);
6843 for (i = 0; i < 2; i++)
6845 temp[i] = fopen (cmpfile[i], "r");
6848 error ("%s: could not open compare-debug file %s",
6849 gcc_input_filename, cmpfile[i]);
6855 if (!ret && temp[0] && temp[1])
6859 c0 = fgetc (temp[0]);
6860 c1 = fgetc (temp[1]);
6864 error ("%s: -fcompare-debug failure",
6865 gcc_input_filename);
6874 for (i = 1; i >= 0; i--)
6883 /* The top-level "main" within the driver would be ~1000 lines long.
6884 This class breaks it up into smaller functions and contains some
6885 state shared by them. */
6890 int main (int argc, char **argv);
6893 void set_progname (const char *argv0) const;
6894 void expand_at_files (int *argc, char ***argv) const;
6895 void decode_argv (int argc, const char **argv);
6896 void global_initializations ();
6897 void build_multilib_strings () const;
6898 void set_up_specs () const;
6899 void putenv_COLLECT_GCC (const char *argv0) const;
6900 void maybe_putenv_COLLECT_LTO_WRAPPER () const;
6901 void maybe_putenv_OFFLOAD_TARGETS () const;
6902 void handle_unrecognized_options () const;
6903 int maybe_print_and_exit () const;
6904 bool prepare_infiles ();
6905 void do_spec_on_infiles () const;
6906 void maybe_run_linker (const char *argv0) const;
6907 void final_actions () const;
6908 int get_exit_code () const;
6911 char *explicit_link_files;
6912 struct cl_decoded_option *decoded_options;
6913 unsigned int decoded_options_count;
6916 /* Implement the top-level "main" within the driver in terms of
6919 extern int main (int, char **);
6922 main (int argc, char **argv)
6926 return d.main (argc, argv);
6929 /* driver::main is implemented as a series of driver:: method calls. */
6932 driver::main (int argc, char **argv)
6936 set_progname (argv[0]);
6937 expand_at_files (&argc, &argv);
6938 decode_argv (argc, const_cast <const char **> (argv));
6939 global_initializations ();
6940 build_multilib_strings ();
6942 putenv_COLLECT_GCC (argv[0]);
6943 maybe_putenv_COLLECT_LTO_WRAPPER ();
6944 maybe_putenv_OFFLOAD_TARGETS ();
6945 handle_unrecognized_options ();
6947 if (!maybe_print_and_exit ())
6950 early_exit = prepare_infiles ();
6952 return get_exit_code ();
6954 do_spec_on_infiles ();
6955 maybe_run_linker (argv[0]);
6957 return get_exit_code ();
6960 /* Locate the final component of argv[0] after any leading path, and set
6961 the program name accordingly. */
6964 driver::set_progname (const char *argv0) const
6966 const char *p = argv0 + strlen (argv0);
6967 while (p != argv0 && !IS_DIR_SEPARATOR (p[-1]))
6971 xmalloc_set_program_name (progname);
6974 /* Expand any @ files within the command-line args,
6975 setting at_file_supplied if any were expanded. */
6978 driver::expand_at_files (int *argc, char ***argv) const
6980 char **old_argv = *argv;
6982 expandargv (argc, argv);
6984 /* Determine if any expansions were made. */
6985 if (*argv != old_argv)
6986 at_file_supplied = true;
6989 /* Decode the command-line arguments from argc/argv into the
6990 decoded_options array. */
6993 driver::decode_argv (int argc, const char **argv)
6995 /* Register the language-independent parameters. */
6996 global_init_params ();
6999 init_options_struct (&global_options, &global_options_set);
7001 decode_cmdline_options_to_array (argc, argv,
7003 &decoded_options, &decoded_options_count);
7006 /* Perform various initializations and setup. */
7009 driver::global_initializations ()
7011 /* Unlock the stdio streams. */
7012 unlock_std_streams ();
7014 gcc_init_libintl ();
7016 diagnostic_initialize (global_dc, 0);
7017 diagnostic_color_init (global_dc);
7019 #ifdef GCC_DRIVER_HOST_INITIALIZATION
7020 /* Perform host dependent initialization when needed. */
7021 GCC_DRIVER_HOST_INITIALIZATION;
7024 if (atexit (delete_temp_files) != 0)
7025 fatal_error (input_location, "atexit failed");
7027 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
7028 signal (SIGINT, fatal_signal);
7030 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
7031 signal (SIGHUP, fatal_signal);
7033 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
7034 signal (SIGTERM, fatal_signal);
7036 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
7037 signal (SIGPIPE, fatal_signal);
7040 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
7041 receive the signal. A different setting is inheritable */
7042 signal (SIGCHLD, SIG_DFL);
7045 /* Parsing and gimplification sometimes need quite large stack.
7046 Increase stack size limits if possible. */
7047 stack_limit_increase (64 * 1024 * 1024);
7049 /* Allocate the argument vector. */
7052 obstack_init (&obstack);
7055 /* Build multilib_select, et. al from the separate lines that make up each
7056 multilib selection. */
7059 driver::build_multilib_strings () const
7063 const char *const *q = multilib_raw;
7066 obstack_init (&multilib_obstack);
7067 while ((p = *q++) != (char *) 0)
7068 obstack_grow (&multilib_obstack, p, strlen (p));
7070 obstack_1grow (&multilib_obstack, 0);
7071 multilib_select = XOBFINISH (&multilib_obstack, const char *);
7073 q = multilib_matches_raw;
7074 while ((p = *q++) != (char *) 0)
7075 obstack_grow (&multilib_obstack, p, strlen (p));
7077 obstack_1grow (&multilib_obstack, 0);
7078 multilib_matches = XOBFINISH (&multilib_obstack, const char *);
7080 q = multilib_exclusions_raw;
7081 while ((p = *q++) != (char *) 0)
7082 obstack_grow (&multilib_obstack, p, strlen (p));
7084 obstack_1grow (&multilib_obstack, 0);
7085 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *);
7087 q = multilib_reuse_raw;
7088 while ((p = *q++) != (char *) 0)
7089 obstack_grow (&multilib_obstack, p, strlen (p));
7091 obstack_1grow (&multilib_obstack, 0);
7092 multilib_reuse = XOBFINISH (&multilib_obstack, const char *);
7095 for (size_t i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
7098 obstack_1grow (&multilib_obstack, ' ');
7099 obstack_grow (&multilib_obstack,
7100 multilib_defaults_raw[i],
7101 strlen (multilib_defaults_raw[i]));
7105 obstack_1grow (&multilib_obstack, 0);
7106 multilib_defaults = XOBFINISH (&multilib_obstack, const char *);
7110 /* Set up the spec-handling machinery. */
7113 driver::set_up_specs () const
7115 const char *spec_machine_suffix;
7119 #ifdef INIT_ENVIRONMENT
7120 /* Set up any other necessary machine specific environment variables. */
7121 xputenv (INIT_ENVIRONMENT);
7124 /* Make a table of what switches there are (switches, n_switches).
7125 Make a table of specified input files (infiles, n_infiles).
7126 Decode switches that are handled locally. */
7128 process_command (decoded_options_count, decoded_options);
7130 /* Initialize the vector of specs to just the default.
7131 This means one element containing 0s, as a terminator. */
7133 compilers = XNEWVAR (struct compiler, sizeof default_compilers);
7134 memcpy (compilers, default_compilers, sizeof default_compilers);
7135 n_compilers = n_default_compilers;
7137 /* Read specs from a file if there is one. */
7139 machine_suffix = concat (spec_host_machine, dir_separator_str, spec_version,
7140 accel_dir_suffix, dir_separator_str, NULL);
7141 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
7143 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true);
7144 /* Read the specs file unless it is a default one. */
7145 if (specs_file != 0 && strcmp (specs_file, "specs"))
7146 read_specs (specs_file, true, false);
7150 #ifdef ACCEL_COMPILER
7151 spec_machine_suffix = machine_suffix;
7153 spec_machine_suffix = just_machine_suffix;
7156 /* We need to check standard_exec_prefix/spec_machine_suffix/specs
7157 for any override of as, ld and libraries. */
7158 specs_file = (char *) alloca (strlen (standard_exec_prefix)
7159 + strlen (spec_machine_suffix) + sizeof ("specs"));
7160 strcpy (specs_file, standard_exec_prefix);
7161 strcat (specs_file, spec_machine_suffix);
7162 strcat (specs_file, "specs");
7163 if (access (specs_file, R_OK) == 0)
7164 read_specs (specs_file, true, false);
7166 /* Process any configure-time defaults specified for the command line
7167 options, via OPTION_DEFAULT_SPECS. */
7168 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
7169 do_option_spec (option_default_specs[i].name,
7170 option_default_specs[i].spec);
7172 /* Process DRIVER_SELF_SPECS, adding any new options to the end
7173 of the command line. */
7175 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
7176 do_self_spec (driver_self_specs[i]);
7178 /* If not cross-compiling, look for executables in the standard
7180 if (*cross_compile == '0')
7182 if (*md_exec_prefix)
7184 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
7185 PREFIX_PRIORITY_LAST, 0, 0);
7189 /* Process sysroot_suffix_spec. */
7190 if (*sysroot_suffix_spec != 0
7191 && !no_sysroot_suffix
7192 && do_spec_2 (sysroot_suffix_spec) == 0)
7194 if (argbuf.length () > 1)
7195 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
7196 else if (argbuf.length () == 1)
7197 target_sysroot_suffix = xstrdup (argbuf.last ());
7200 #ifdef HAVE_LD_SYSROOT
7201 /* Pass the --sysroot option to the linker, if it supports that. If
7202 there is a sysroot_suffix_spec, it has already been processed by
7203 this point, so target_system_root really is the system root we
7205 if (target_system_root)
7207 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
7208 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
7209 set_spec ("link", XOBFINISH (&obstack, const char *), false);
7213 /* Process sysroot_hdrs_suffix_spec. */
7214 if (*sysroot_hdrs_suffix_spec != 0
7215 && !no_sysroot_suffix
7216 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
7218 if (argbuf.length () > 1)
7219 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
7220 else if (argbuf.length () == 1)
7221 target_sysroot_hdrs_suffix = xstrdup (argbuf.last ());
7224 /* Look for startfiles in the standard places. */
7225 if (*startfile_prefix_spec != 0
7226 && do_spec_2 (startfile_prefix_spec) == 0
7227 && do_spec_1 (" ", 0, NULL) == 0)
7231 FOR_EACH_VEC_ELT (argbuf, ndx, arg)
7232 add_sysrooted_prefix (&startfile_prefixes, arg, "BINUTILS",
7233 PREFIX_PRIORITY_LAST, 0, 1);
7235 /* We should eventually get rid of all these and stick to
7236 startfile_prefix_spec exclusively. */
7237 else if (*cross_compile == '0' || target_system_root)
7239 if (*md_startfile_prefix)
7240 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
7241 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
7243 if (*md_startfile_prefix_1)
7244 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
7245 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
7247 /* If standard_startfile_prefix is relative, base it on
7248 standard_exec_prefix. This lets us move the installed tree
7249 as a unit. If GCC_EXEC_PREFIX is defined, base
7250 standard_startfile_prefix on that as well.
7252 If the prefix is relative, only search it for native compilers;
7253 otherwise we will search a directory containing host libraries. */
7254 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
7255 add_sysrooted_prefix (&startfile_prefixes,
7256 standard_startfile_prefix, "BINUTILS",
7257 PREFIX_PRIORITY_LAST, 0, 1);
7258 else if (*cross_compile == '0')
7260 add_prefix (&startfile_prefixes,
7261 concat (gcc_exec_prefix
7262 ? gcc_exec_prefix : standard_exec_prefix,
7264 standard_startfile_prefix, NULL),
7265 NULL, PREFIX_PRIORITY_LAST, 0, 1);
7268 /* Sysrooted prefixes are relocated because target_system_root is
7269 also relocated by gcc_exec_prefix. */
7270 if (*standard_startfile_prefix_1)
7271 add_sysrooted_prefix (&startfile_prefixes,
7272 standard_startfile_prefix_1, "BINUTILS",
7273 PREFIX_PRIORITY_LAST, 0, 1);
7274 if (*standard_startfile_prefix_2)
7275 add_sysrooted_prefix (&startfile_prefixes,
7276 standard_startfile_prefix_2, "BINUTILS",
7277 PREFIX_PRIORITY_LAST, 0, 1);
7280 /* Process any user specified specs in the order given on the command
7282 for (struct user_specs *uptr = user_specs_head; uptr; uptr = uptr->next)
7284 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
7286 read_specs (filename ? filename : uptr->filename, false, true);
7289 /* Process any user self specs. */
7291 struct spec_list *sl;
7292 for (sl = specs; sl; sl = sl->next)
7293 if (sl->name_len == sizeof "self_spec" - 1
7294 && !strcmp (sl->name, "self_spec"))
7295 do_self_spec (*sl->ptr_spec);
7300 enum save_temps save;
7302 if (!compare_debug_second)
7304 n_switches_debug_check[1] = n_switches;
7305 n_switches_alloc_debug_check[1] = n_switches_alloc;
7306 switches_debug_check[1] = XDUPVEC (struct switchstr, switches,
7309 do_self_spec ("%:compare-debug-self-opt()");
7310 n_switches_debug_check[0] = n_switches;
7311 n_switches_alloc_debug_check[0] = n_switches_alloc;
7312 switches_debug_check[0] = switches;
7314 n_switches = n_switches_debug_check[1];
7315 n_switches_alloc = n_switches_alloc_debug_check[1];
7316 switches = switches_debug_check[1];
7319 /* Avoid crash when computing %j in this early. */
7320 save = save_temps_flag;
7321 save_temps_flag = SAVE_TEMPS_NONE;
7323 compare_debug = -compare_debug;
7324 do_self_spec ("%:compare-debug-self-opt()");
7326 save_temps_flag = save;
7328 if (!compare_debug_second)
7330 n_switches_debug_check[1] = n_switches;
7331 n_switches_alloc_debug_check[1] = n_switches_alloc;
7332 switches_debug_check[1] = switches;
7333 compare_debug = -compare_debug;
7334 n_switches = n_switches_debug_check[0];
7335 n_switches_alloc = n_switches_debug_check[0];
7336 switches = switches_debug_check[0];
7341 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
7342 if (gcc_exec_prefix)
7343 gcc_exec_prefix = concat (gcc_exec_prefix, spec_host_machine,
7344 dir_separator_str, spec_version,
7345 accel_dir_suffix, dir_separator_str, NULL);
7347 /* Now we have the specs.
7348 Set the `valid' bits for switches that match anything in any spec. */
7350 validate_all_switches ();
7352 /* Now that we have the switches and the specs, set
7353 the subdirectory based on the options. */
7354 set_multilib_dir ();
7357 /* Set up to remember the pathname of gcc and any options
7358 needed for collect. We use argv[0] instead of progname because
7359 we need the complete pathname. */
7362 driver::putenv_COLLECT_GCC (const char *argv0) const
7364 obstack_init (&collect_obstack);
7365 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
7366 obstack_grow (&collect_obstack, argv0, strlen (argv0) + 1);
7367 xputenv (XOBFINISH (&collect_obstack, char *));
7370 /* Set up to remember the pathname of the lto wrapper. */
7373 driver::maybe_putenv_COLLECT_LTO_WRAPPER () const
7375 char *lto_wrapper_file;
7378 lto_wrapper_file = NULL;
7380 lto_wrapper_file = find_a_file (&exec_prefixes, "lto-wrapper",
7382 if (lto_wrapper_file)
7384 lto_wrapper_file = convert_white_space (lto_wrapper_file);
7385 lto_wrapper_spec = lto_wrapper_file;
7386 obstack_init (&collect_obstack);
7387 obstack_grow (&collect_obstack, "COLLECT_LTO_WRAPPER=",
7388 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
7389 obstack_grow (&collect_obstack, lto_wrapper_spec,
7390 strlen (lto_wrapper_spec) + 1);
7391 xputenv (XOBFINISH (&collect_obstack, char *));
7396 /* Set up to remember the names of offload targets. */
7399 driver::maybe_putenv_OFFLOAD_TARGETS () const
7401 const char *targets = offload_targets;
7403 /* If no targets specified by -foffload, use all available targets. */
7405 targets = OFFLOAD_TARGETS;
7407 if (strlen (targets) > 0)
7409 obstack_grow (&collect_obstack, "OFFLOAD_TARGET_NAMES=",
7410 sizeof ("OFFLOAD_TARGET_NAMES=") - 1);
7411 obstack_grow (&collect_obstack, targets,
7412 strlen (targets) + 1);
7413 xputenv (XOBFINISH (&collect_obstack, char *));
7416 free (offload_targets);
7419 /* Reject switches that no pass was interested in. */
7422 driver::handle_unrecognized_options () const
7424 for (size_t i = 0; (int) i < n_switches; i++)
7425 if (! switches[i].validated)
7426 error ("unrecognized command line option %<-%s%>", switches[i].part1);
7429 /* Handle the various -print-* options, returning 0 if the driver
7430 should exit, or nonzero if the driver should continue. */
7433 driver::maybe_print_and_exit () const
7435 if (print_search_dirs)
7437 printf (_("install: %s%s\n"),
7438 gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
7439 gcc_exec_prefix ? "" : machine_suffix);
7440 printf (_("programs: %s\n"),
7441 build_search_list (&exec_prefixes, "", false, false));
7442 printf (_("libraries: %s\n"),
7443 build_search_list (&startfile_prefixes, "", false, true));
7447 if (print_file_name)
7449 printf ("%s\n", find_file (print_file_name));
7453 if (print_prog_name)
7455 if (use_ld != NULL && ! strcmp (print_prog_name, "ld"))
7457 /* Append USE_LD to to the default linker. */
7458 #ifdef DEFAULT_LINKER
7460 # ifdef HAVE_HOST_EXECUTABLE_SUFFIX
7461 int len = (sizeof (DEFAULT_LINKER)
7462 - sizeof (HOST_EXECUTABLE_SUFFIX));
7466 char *default_linker = xstrdup (DEFAULT_LINKER);
7467 /* Strip HOST_EXECUTABLE_SUFFIX if DEFAULT_LINKER contains
7468 HOST_EXECUTABLE_SUFFIX. */
7469 if (! strcmp (&default_linker[len], HOST_EXECUTABLE_SUFFIX))
7471 default_linker[len] = '\0';
7472 ld = concat (default_linker, use_ld,
7473 HOST_EXECUTABLE_SUFFIX, NULL);
7478 ld = concat (DEFAULT_LINKER, use_ld, NULL);
7479 if (access (ld, X_OK) == 0)
7481 printf ("%s\n", ld);
7485 print_prog_name = concat (print_prog_name, use_ld, NULL);
7487 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
7488 printf ("%s\n", (newname ? newname : print_prog_name));
7492 if (print_multi_lib)
7494 print_multilib_info ();
7498 if (print_multi_directory)
7500 if (multilib_dir == NULL)
7503 printf ("%s\n", multilib_dir);
7507 if (print_multiarch)
7509 if (multiarch_dir == NULL)
7512 printf ("%s\n", multiarch_dir);
7518 if (target_system_root)
7520 if (target_sysroot_suffix)
7521 printf ("%s%s\n", target_system_root, target_sysroot_suffix);
7523 printf ("%s\n", target_system_root);
7528 if (print_multi_os_directory)
7530 if (multilib_os_dir == NULL)
7533 printf ("%s\n", multilib_os_dir);
7537 if (print_sysroot_headers_suffix)
7539 if (*sysroot_hdrs_suffix_spec)
7541 printf("%s\n", (target_sysroot_hdrs_suffix
7542 ? target_sysroot_hdrs_suffix
7547 /* The error status indicates that only one set of fixed
7548 headers should be built. */
7549 fatal_error (input_location,
7550 "not configured with sysroot headers suffix");
7553 if (print_help_list)
7559 printf (_("\nFor bug reporting instructions, please see:\n"));
7560 printf ("%s.\n", bug_report_url);
7565 /* We do not exit here. Instead we have created a fake input file
7566 called 'help-dummy' which needs to be compiled, and we pass this
7567 on the various sub-processes, along with the --help switch.
7568 Ensure their output appears after ours. */
7569 fputc ('\n', stdout);
7575 printf (_("%s %s%s\n"), progname, pkgversion_string,
7577 printf ("Copyright %s 2015 Free Software Foundation, Inc.\n",
7579 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
7580 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
7585 /* We do not exit here. We use the same mechanism of --help to print
7586 the version of the sub-processes. */
7587 fputc ('\n', stdout);
7593 print_configuration (stderr);
7601 /* Figure out what to do with each input file.
7602 Return true if we need to exit early from "main", false otherwise. */
7605 driver::prepare_infiles ()
7608 int lang_n_infiles = 0;
7610 if (n_infiles == added_libraries)
7611 fatal_error (input_location, "no input files");
7614 /* Early exit needed from main. */
7617 /* Make a place to record the compiler output file names
7618 that correspond to the input files. */
7621 i += lang_specific_extra_outfiles;
7622 outfiles = XCNEWVEC (const char *, i);
7624 /* Record which files were specified explicitly as link input. */
7626 explicit_link_files = XCNEWVEC (char, n_infiles);
7628 combine_inputs = have_o || flag_wpa;
7630 for (i = 0; (int) i < n_infiles; i++)
7632 const char *name = infiles[i].name;
7633 struct compiler *compiler = lookup_compiler (name,
7635 infiles[i].language);
7637 if (compiler && !(compiler->combinable))
7638 combine_inputs = false;
7640 if (lang_n_infiles > 0 && compiler != input_file_compiler
7641 && infiles[i].language && infiles[i].language[0] != '*')
7642 infiles[i].incompiler = compiler;
7646 input_file_compiler = compiler;
7647 infiles[i].incompiler = compiler;
7651 /* Since there is no compiler for this input file, assume it is a
7653 explicit_link_files[i] = 1;
7654 infiles[i].incompiler = NULL;
7656 infiles[i].compiled = false;
7657 infiles[i].preprocessed = false;
7660 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1)
7661 fatal_error (input_location,
7662 "cannot specify -o with -c, -S or -E with multiple files");
7664 /* No early exit needed from main; we can continue. */
7668 /* Run the spec machinery on each input file. */
7671 driver::do_spec_on_infiles () const
7675 for (i = 0; (int) i < n_infiles; i++)
7677 int this_file_error = 0;
7679 /* Tell do_spec what to substitute for %i. */
7681 input_file_number = i;
7682 set_input (infiles[i].name);
7684 if (infiles[i].compiled)
7687 /* Use the same thing in %o, unless cp->spec says otherwise. */
7689 outfiles[i] = gcc_input_filename;
7691 /* Figure out which compiler from the file's suffix. */
7694 = lookup_compiler (infiles[i].name, input_filename_length,
7695 infiles[i].language);
7697 if (input_file_compiler)
7699 /* Ok, we found an applicable compiler. Run its spec. */
7701 if (input_file_compiler->spec[0] == '#')
7703 error ("%s: %s compiler not installed on this system",
7704 gcc_input_filename, &input_file_compiler->spec[1]);
7705 this_file_error = 1;
7713 free (debug_check_temp_file[0]);
7714 debug_check_temp_file[0] = NULL;
7716 free (debug_check_temp_file[1]);
7717 debug_check_temp_file[1] = NULL;
7720 value = do_spec (input_file_compiler->spec);
7721 infiles[i].compiled = true;
7723 this_file_error = 1;
7724 else if (compare_debug && debug_check_temp_file[0])
7727 inform (0, "recompiling with -fcompare-debug");
7729 compare_debug = -compare_debug;
7730 n_switches = n_switches_debug_check[1];
7731 n_switches_alloc = n_switches_alloc_debug_check[1];
7732 switches = switches_debug_check[1];
7734 value = do_spec (input_file_compiler->spec);
7736 compare_debug = -compare_debug;
7737 n_switches = n_switches_debug_check[0];
7738 n_switches_alloc = n_switches_alloc_debug_check[0];
7739 switches = switches_debug_check[0];
7743 error ("during -fcompare-debug recompilation");
7744 this_file_error = 1;
7747 gcc_assert (debug_check_temp_file[1]
7748 && filename_cmp (debug_check_temp_file[0],
7749 debug_check_temp_file[1]));
7752 inform (0, "comparing final insns dumps");
7754 if (compare_files (debug_check_temp_file))
7755 this_file_error = 1;
7760 free (debug_check_temp_file[0]);
7761 debug_check_temp_file[0] = NULL;
7763 free (debug_check_temp_file[1]);
7764 debug_check_temp_file[1] = NULL;
7769 /* If this file's name does not contain a recognized suffix,
7770 record it as explicit linker input. */
7773 explicit_link_files[i] = 1;
7775 /* Clear the delete-on-failure queue, deleting the files in it
7776 if this compilation failed. */
7778 if (this_file_error)
7780 delete_failure_queue ();
7783 /* If this compilation succeeded, don't delete those files later. */
7784 clear_failure_queue ();
7787 /* Reset the input file name to the first compile/object file name, for use
7788 with %b in LINK_SPEC. We use the first input file that we can find
7789 a compiler to compile it instead of using infiles.language since for
7790 languages other than C we use aliases that we then lookup later. */
7795 for (i = 0; i < n_infiles ; i++)
7796 if (infiles[i].incompiler
7797 || (infiles[i].language && infiles[i].language[0] != '*'))
7799 set_input (infiles[i].name);
7806 /* Make sure INPUT_FILE_NUMBER points to first available open
7808 input_file_number = n_infiles;
7809 if (lang_specific_pre_link ())
7814 /* If we have to run the linker, do it now. */
7817 driver::maybe_run_linker (const char *argv0) const
7820 int linker_was_run = 0;
7821 int num_linker_inputs;
7823 /* Determine if there are any linker input files. */
7824 num_linker_inputs = 0;
7825 for (i = 0; (int) i < n_infiles; i++)
7826 if (explicit_link_files[i] || outfiles[i] != NULL)
7827 num_linker_inputs++;
7829 /* Run ld to link all the compiler output files. */
7831 if (num_linker_inputs > 0 && !seen_error () && print_subprocess_help < 2)
7833 int tmp = execution_count;
7837 #if HAVE_LTO_PLUGIN > 0
7838 #if HAVE_LTO_PLUGIN == 2
7839 const char *fno_use_linker_plugin = "fno-use-linker-plugin";
7841 const char *fuse_linker_plugin = "fuse-linker-plugin";
7845 /* We'll use ld if we can't find collect2. */
7846 if (! strcmp (linker_name_spec, "collect2"))
7848 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false);
7850 linker_name_spec = "ld";
7853 #if HAVE_LTO_PLUGIN > 0
7854 #if HAVE_LTO_PLUGIN == 2
7855 if (!switch_matches (fno_use_linker_plugin,
7856 fno_use_linker_plugin
7857 + strlen (fno_use_linker_plugin), 0))
7859 if (switch_matches (fuse_linker_plugin,
7861 + strlen (fuse_linker_plugin), 0))
7864 char *temp_spec = find_a_file (&exec_prefixes,
7865 LTOPLUGINSONAME, R_OK,
7868 fatal_error (input_location,
7869 "-fuse-linker-plugin, but %s not found",
7871 linker_plugin_file_spec = convert_white_space (temp_spec);
7874 lto_gcc_spec = argv0;
7877 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
7879 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false);
7880 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true);
7882 if (print_subprocess_help == 1)
7884 printf (_("\nLinker options\n==============\n\n"));
7885 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
7886 " to the linker.\n\n"));
7889 int value = do_spec (link_command_spec);
7892 linker_was_run = (tmp != execution_count);
7895 /* If options said don't run linker,
7896 complain about input files to be given to the linker. */
7898 if (! linker_was_run && !seen_error ())
7899 for (i = 0; (int) i < n_infiles; i++)
7900 if (explicit_link_files[i]
7901 && !(infiles[i].language && infiles[i].language[0] == '*'))
7902 warning (0, "%s: linker input file unused because linking not done",
7906 /* The end of "main". */
7909 driver::final_actions () const
7911 /* Delete some or all of the temporary files we made. */
7914 delete_failure_queue ();
7915 delete_temp_files ();
7917 if (print_help_list)
7919 printf (("\nFor bug reporting instructions, please see:\n"));
7920 printf ("%s\n", bug_report_url);
7924 /* Determine what the exit code of the driver should be. */
7927 driver::get_exit_code () const
7929 return (signal_count != 0 ? 2
7930 : seen_error () ? (pass_exit_codes ? greatest_status : 1)
7934 /* Find the proper compilation spec for the file name NAME,
7935 whose length is LENGTH. LANGUAGE is the specified language,
7936 or 0 if this file is to be passed to the linker. */
7938 static struct compiler *
7939 lookup_compiler (const char *name, size_t length, const char *language)
7941 struct compiler *cp;
7943 /* If this was specified by the user to be a linker input, indicate that. */
7944 if (language != 0 && language[0] == '*')
7947 /* Otherwise, look for the language, if one is spec'd. */
7950 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
7951 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
7954 error ("language %s not recognized", language);
7958 /* Look for a suffix. */
7959 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
7961 if (/* The suffix `-' matches only the file name `-'. */
7962 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
7963 || (strlen (cp->suffix) < length
7964 /* See if the suffix matches the end of NAME. */
7965 && !strcmp (cp->suffix,
7966 name + length - strlen (cp->suffix))
7971 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
7972 /* Look again, but case-insensitively this time. */
7974 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
7976 if (/* The suffix `-' matches only the file name `-'. */
7977 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
7978 || (strlen (cp->suffix) < length
7979 /* See if the suffix matches the end of NAME. */
7980 && ((!strcmp (cp->suffix,
7981 name + length - strlen (cp->suffix))
7982 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
7983 && !strcasecmp (cp->suffix,
7984 name + length - strlen (cp->suffix)))
7990 if (cp >= compilers)
7992 if (cp->spec[0] != '@')
7993 /* A non-alias entry: return it. */
7996 /* An alias entry maps a suffix to a language.
7997 Search for the language; pass 0 for NAME and LENGTH
7998 to avoid infinite recursion if language not found. */
7999 return lookup_compiler (NULL, 0, cp->spec + 1);
8005 save_string (const char *s, int len)
8007 char *result = XNEWVEC (char, len + 1);
8009 memcpy (result, s, len);
8015 pfatal_with_name (const char *name)
8017 perror_with_name (name);
8018 delete_temp_files ();
8023 perror_with_name (const char *name)
8025 error ("%s: %m", name);
8029 validate_switches_from_spec (const char *spec, bool user)
8031 const char *p = spec;
8034 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
8035 /* We have a switch spec. */
8036 p = validate_switches (p + 1, user);
8040 validate_all_switches (void)
8042 struct compiler *comp;
8043 struct spec_list *spec;
8045 for (comp = compilers; comp->spec; comp++)
8046 validate_switches_from_spec (comp->spec, false);
8048 /* Look through the linked list of specs read from the specs file. */
8049 for (spec = specs; spec; spec = spec->next)
8050 validate_switches_from_spec (*spec->ptr_spec, spec->user_p);
8052 validate_switches_from_spec (link_command_spec, false);
8055 /* Look at the switch-name that comes after START
8056 and mark as valid all supplied switches that match it. */
8059 validate_switches (const char *start, bool user_spec)
8061 const char *p = start;
8065 bool suffix = false;
8066 bool starred = false;
8068 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
8077 if (*p == '.' || *p == ',')
8081 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
8082 || *p == ',' || *p == '.' || *p == '@')
8087 starred = true, p++;
8093 /* Mark all matching switches as valid. */
8094 for (i = 0; i < n_switches; i++)
8095 if (!strncmp (switches[i].part1, atom, len)
8096 && (starred || switches[i].part1[len] == '\0')
8097 && (switches[i].known || user_spec))
8098 switches[i].validated = true;
8102 if (*p && (p[-1] == '|' || p[-1] == '&'))
8105 if (*p && p[-1] == ':')
8107 while (*p && *p != ';' && *p != '}')
8112 if (*p == '{' || *p == '<')
8113 p = validate_switches (p+1, user_spec);
8114 else if (p[0] == 'W' && p[1] == '{')
8115 p = validate_switches (p+2, user_spec);
8122 if (*p && p[-1] == ';')
8136 static struct mdswitchstr *mdswitches;
8137 static int n_mdswitches;
8139 /* Check whether a particular argument was used. The first time we
8140 canonicalize the switches to keep only the ones we care about. */
8143 used_arg (const char *p, int len)
8148 const char *replace;
8153 static struct mswitchstr *mswitches;
8154 static int n_mswitches;
8159 struct mswitchstr *matches;
8163 /* Break multilib_matches into the component strings of string
8164 and replacement string. */
8165 for (q = multilib_matches; *q != '\0'; q++)
8170 = (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
8172 q = multilib_matches;
8181 fatal_error (input_location, "multilib spec %qs is invalid",
8186 matches[i].len = q - matches[i].str;
8188 matches[i].replace = ++q;
8189 while (*q != ';' && *q != '\0')
8192 goto invalid_matches;
8195 matches[i].rep_len = q - matches[i].replace;
8201 /* Now build a list of the replacement string for switches that we care
8202 about. Make sure we allocate at least one entry. This prevents
8203 xmalloc from calling fatal, and prevents us from re-executing this
8206 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1));
8207 for (i = 0; i < n_switches; i++)
8208 if ((switches[i].live_cond & SWITCH_IGNORE) == 0)
8210 int xlen = strlen (switches[i].part1);
8211 for (j = 0; j < cnt; j++)
8212 if (xlen == matches[j].len
8213 && ! strncmp (switches[i].part1, matches[j].str, xlen))
8215 mswitches[n_mswitches].str = matches[j].replace;
8216 mswitches[n_mswitches].len = matches[j].rep_len;
8217 mswitches[n_mswitches].replace = (char *) 0;
8218 mswitches[n_mswitches].rep_len = 0;
8224 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
8225 on the command line nor any options mutually incompatible with
8227 for (i = 0; i < n_mdswitches; i++)
8231 for (q = multilib_options; *q != '\0'; *q && q++)
8237 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
8238 || strchr (" /", q[mdswitches[i].len]) == NULL)
8240 while (*q != ' ' && *q != '/' && *q != '\0')
8247 if (*q != ' ' && *q != '\0')
8249 while (*r != ' ' && *r != '\0')
8252 while (*q != ' ' && *q != '/' && *q != '\0')
8255 if (used_arg (r, q - r))
8260 mswitches[n_mswitches].str = mdswitches[i].str;
8261 mswitches[n_mswitches].len = mdswitches[i].len;
8262 mswitches[n_mswitches].replace = (char *) 0;
8263 mswitches[n_mswitches].rep_len = 0;
8276 for (i = 0; i < n_mswitches; i++)
8277 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
8284 default_arg (const char *p, int len)
8288 for (i = 0; i < n_mdswitches; i++)
8289 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
8295 /* Work out the subdirectory to use based on the options. The format of
8296 multilib_select is a list of elements. Each element is a subdirectory
8297 name followed by a list of options followed by a semicolon. The format
8298 of multilib_exclusions is the same, but without the preceding
8299 directory. First gcc will check the exclusions, if none of the options
8300 beginning with an exclamation point are present, and all of the other
8301 options are present, then we will ignore this completely. Passing
8302 that, gcc will consider each multilib_select in turn using the same
8303 rules for matching the options. If a match is found, that subdirectory
8305 A subdirectory name is optionally followed by a colon and the corresponding
8309 set_multilib_dir (void)
8312 unsigned int this_path_len;
8313 const char *this_path, *this_arg;
8314 const char *start, *end;
8316 int ok, ndfltok, first;
8319 start = multilib_defaults;
8320 while (*start == ' ' || *start == '\t')
8322 while (*start != '\0')
8325 while (*start != ' ' && *start != '\t' && *start != '\0')
8327 while (*start == ' ' || *start == '\t')
8335 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches);
8336 for (start = multilib_defaults; *start != '\0'; start = end + 1)
8338 while (*start == ' ' || *start == '\t')
8344 for (end = start + 1;
8345 *end != ' ' && *end != '\t' && *end != '\0'; end++)
8348 obstack_grow (&multilib_obstack, start, end - start);
8349 obstack_1grow (&multilib_obstack, 0);
8350 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *);
8351 mdswitches[i++].len = end - start;
8358 p = multilib_exclusions;
8361 /* Ignore newlines. */
8368 /* Check the arguments. */
8375 fatal_error (input_location, "multilib exclusions %qs is invalid",
8376 multilib_exclusions);
8386 while (*p != ' ' && *p != ';')
8389 goto invalid_exclusions;
8393 if (*this_arg != '!')
8401 ok = used_arg (this_arg, p - this_arg);
8416 p = multilib_select;
8418 /* Append multilib reuse rules if any. With those rules, we can reuse
8419 one multilib for certain different options sets. */
8420 if (strlen (multilib_reuse) > 0)
8421 p = concat (p, multilib_reuse, NULL);
8425 /* Ignore newlines. */
8432 /* Get the initial path. */
8439 fatal_error (input_location, "multilib select %qs %qs is invalid",
8440 multilib_select, multilib_reuse);
8444 this_path_len = p - this_path;
8446 /* Check the arguments. */
8453 goto invalid_select;
8462 while (*p != ' ' && *p != ';')
8465 goto invalid_select;
8469 if (*this_arg != '!')
8477 /* If this is a default argument, we can just ignore it.
8478 This is true even if this_arg begins with '!'. Beginning
8479 with '!' does not mean that this argument is necessarily
8480 inappropriate for this library: it merely means that
8481 there is a more specific library which uses this
8482 argument. If this argument is a default, we need not
8483 consider that more specific library. */
8484 ok = used_arg (this_arg, p - this_arg);
8491 if (default_arg (this_arg, p - this_arg))
8500 if (this_path_len != 1
8501 || this_path[0] != '.')
8503 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1);
8506 strncpy (new_multilib_dir, this_path, this_path_len);
8507 new_multilib_dir[this_path_len] = '\0';
8508 q = strchr (new_multilib_dir, ':');
8511 multilib_dir = new_multilib_dir;
8518 const char *q = this_path, *end = this_path + this_path_len;
8520 while (q < end && *q != ':')
8524 const char *q2 = q + 1, *ml_end = end;
8525 char *new_multilib_os_dir;
8527 while (q2 < end && *q2 != ':')
8531 if (ml_end - q == 1)
8532 multilib_os_dir = xstrdup (".");
8535 new_multilib_os_dir = XNEWVEC (char, ml_end - q);
8536 memcpy (new_multilib_os_dir, q + 1, ml_end - q - 1);
8537 new_multilib_os_dir[ml_end - q - 1] = '\0';
8538 multilib_os_dir = new_multilib_os_dir;
8541 if (q2 < end && *q2 == ':')
8543 char *new_multiarch_dir = XNEWVEC (char, end - q2);
8544 memcpy (new_multiarch_dir, q2 + 1, end - q2 - 1);
8545 new_multiarch_dir[end - q2 - 1] = '\0';
8546 multiarch_dir = new_multiarch_dir;
8555 if (multilib_dir == NULL && multilib_os_dir != NULL
8556 && strcmp (multilib_os_dir, ".") == 0)
8558 free (CONST_CAST (char *, multilib_os_dir));
8559 multilib_os_dir = NULL;
8561 else if (multilib_dir != NULL && multilib_os_dir == NULL)
8562 multilib_os_dir = multilib_dir;
8565 /* Print out the multiple library subdirectory selection
8566 information. This prints out a series of lines. Each line looks
8567 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
8568 required. Only the desired options are printed out, the negative
8569 matches. The options are print without a leading dash. There are
8570 no spaces to make it easy to use the information in the shell.
8571 Each subdirectory is printed only once. This assumes the ordering
8572 generated by the genmultilib script. Also, we leave out ones that match
8576 print_multilib_info (void)
8578 const char *p = multilib_select;
8579 const char *last_path = 0, *this_path;
8581 unsigned int last_path_len = 0;
8586 /* Ignore newlines. */
8593 /* Get the initial path. */
8600 fatal_error (input_location,
8601 "multilib select %qs is invalid", multilib_select);
8607 /* When --disable-multilib was used but target defines
8608 MULTILIB_OSDIRNAMES, entries starting with .: (and not starting
8609 with .:: for multiarch configurations) are there just to find
8610 multilib_os_dir, so skip them from output. */
8611 if (this_path[0] == '.' && this_path[1] == ':' && this_path[2] != ':')
8614 /* Check for matches with the multilib_exclusions. We don't bother
8615 with the '!' in either list. If any of the exclusion rules match
8616 all of its options with the select rule, we skip it. */
8618 const char *e = multilib_exclusions;
8619 const char *this_arg;
8624 /* Ignore newlines. */
8631 /* Check the arguments. */
8640 fatal_error (input_location,
8641 "multilib exclusion %qs is invalid",
8642 multilib_exclusions);
8653 while (*e != ' ' && *e != ';')
8656 goto invalid_exclusion;
8664 int len = e - this_arg;
8667 goto invalid_select;
8671 while (*q != ' ' && *q != ';')
8674 goto invalid_select;
8678 if (! strncmp (arg, this_arg,
8679 (len < q - arg) ? q - arg : len)
8680 || default_arg (this_arg, e - this_arg))
8710 /* If this is a duplicate, skip it. */
8711 skip = (last_path != 0
8712 && (unsigned int) (p - this_path) == last_path_len
8713 && ! filename_ncmp (last_path, this_path, last_path_len));
8715 last_path = this_path;
8716 last_path_len = p - this_path;
8719 /* If this directory requires any default arguments, we can skip
8720 it. We will already have printed a directory identical to
8721 this one which does not require that default argument. */
8732 goto invalid_select;
8739 while (*q != ' ' && *q != ';')
8742 goto invalid_select;
8747 && default_arg (arg, q - arg))
8762 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
8773 goto invalid_select;
8781 use_arg = *p != '!';
8786 while (*p != ' ' && *p != ';')
8789 goto invalid_select;
8801 /* If there are extra options, print them now. */
8802 if (multilib_extra && *multilib_extra)
8804 int print_at = TRUE;
8807 for (q = multilib_extra; *q != '\0'; q++)
8828 /* getenv built-in spec function.
8830 Returns the value of the environment variable given by its first
8831 argument, concatenated with the second argument. If the
8832 environment variable is not defined, a fatal error is issued. */
8835 getenv_spec_function (int argc, const char **argv)
8845 value = getenv (argv[0]);
8847 fatal_error (input_location,
8848 "environment variable %qs not defined", argv[0]);
8850 /* We have to escape every character of the environment variable so
8851 they are not interpreted as active spec characters. A
8852 particularly painful case is when we are reading a variable
8853 holding a windows path complete with \ separators. */
8854 len = strlen (value) * 2 + strlen (argv[1]) + 1;
8855 result = XNEWVAR (char, len);
8856 for (ptr = result; *value; ptr += 2)
8862 strcpy (ptr, argv[1]);
8867 /* if-exists built-in spec function.
8869 Checks to see if the file specified by the absolute pathname in
8870 ARGS exists. Returns that pathname if found.
8872 The usual use for this function is to check for a library file
8873 (whose name has been expanded with %s). */
8876 if_exists_spec_function (int argc, const char **argv)
8878 /* Must have only one argument. */
8879 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
8885 /* if-exists-else built-in spec function.
8887 This is like if-exists, but takes an additional argument which
8888 is returned if the first argument does not exist. */
8891 if_exists_else_spec_function (int argc, const char **argv)
8893 /* Must have exactly two arguments. */
8897 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
8903 /* sanitize built-in spec function.
8905 This returns non-NULL, if sanitizing address, thread or
8906 any of the undefined behavior sanitizers. */
8909 sanitize_spec_function (int argc, const char **argv)
8914 if (strcmp (argv[0], "address") == 0)
8915 return (flag_sanitize & SANITIZE_USER_ADDRESS) ? "" : NULL;
8916 if (strcmp (argv[0], "kernel-address") == 0)
8917 return (flag_sanitize & SANITIZE_KERNEL_ADDRESS) ? "" : NULL;
8918 if (strcmp (argv[0], "thread") == 0)
8919 return (flag_sanitize & SANITIZE_THREAD) ? "" : NULL;
8920 if (strcmp (argv[0], "undefined") == 0)
8921 return ((flag_sanitize & (SANITIZE_UNDEFINED | SANITIZE_NONDEFAULT))
8922 && !flag_sanitize_undefined_trap_on_error) ? "" : NULL;
8923 if (strcmp (argv[0], "leak") == 0)
8924 return ((flag_sanitize
8925 & (SANITIZE_ADDRESS | SANITIZE_LEAK | SANITIZE_THREAD))
8926 == SANITIZE_LEAK) ? "" : NULL;
8930 /* replace-outfile built-in spec function.
8932 This looks for the first argument in the outfiles array's name and
8933 replaces it with the second argument. */
8936 replace_outfile_spec_function (int argc, const char **argv)
8939 /* Must have exactly two arguments. */
8943 for (i = 0; i < n_infiles; i++)
8945 if (outfiles[i] && !filename_cmp (outfiles[i], argv[0]))
8946 outfiles[i] = xstrdup (argv[1]);
8951 /* remove-outfile built-in spec function.
8953 * This looks for the first argument in the outfiles array's name and
8957 remove_outfile_spec_function (int argc, const char **argv)
8960 /* Must have exactly one argument. */
8964 for (i = 0; i < n_infiles; i++)
8966 if (outfiles[i] && !filename_cmp (outfiles[i], argv[0]))
8972 /* Given two version numbers, compares the two numbers.
8973 A version number must match the regular expression
8974 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
8977 compare_version_strings (const char *v1, const char *v2)
8982 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
8983 REG_EXTENDED | REG_NOSUB) != 0)
8985 rresult = regexec (&r, v1, 0, NULL, 0);
8986 if (rresult == REG_NOMATCH)
8987 fatal_error (input_location, "invalid version number %qs", v1);
8988 else if (rresult != 0)
8990 rresult = regexec (&r, v2, 0, NULL, 0);
8991 if (rresult == REG_NOMATCH)
8992 fatal_error (input_location, "invalid version number %qs", v2);
8993 else if (rresult != 0)
8996 return strverscmp (v1, v2);
9000 /* version_compare built-in spec function.
9002 This takes an argument of the following form:
9004 <comparison-op> <arg1> [<arg2>] <switch> <result>
9006 and produces "result" if the comparison evaluates to true,
9007 and nothing if it doesn't.
9009 The supported <comparison-op> values are:
9011 >= true if switch is a later (or same) version than arg1
9013 < true if switch is an earlier version than arg1
9015 >< true if switch is arg1 or later, and earlier than arg2
9016 <> true if switch is earlier than arg1 or is arg2 or later
9018 If the switch is not present, the condition is false unless
9019 the first character of the <comparison-op> is '!'.
9022 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
9023 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
9026 version_compare_spec_function (int argc, const char **argv)
9030 const char *switch_value = NULL;
9035 fatal_error (input_location, "too few arguments to %%:version-compare");
9036 if (argv[0][0] == '\0')
9038 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!')
9040 if (argc != nargs + 3)
9041 fatal_error (input_location, "too many arguments to %%:version-compare");
9043 switch_len = strlen (argv[nargs + 1]);
9044 for (i = 0; i < n_switches; i++)
9045 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len)
9046 && check_live_switch (i, switch_len))
9047 switch_value = switches[i].part1 + switch_len;
9049 if (switch_value == NULL)
9053 comp1 = compare_version_strings (switch_value, argv[1]);
9055 comp2 = compare_version_strings (switch_value, argv[2]);
9057 comp2 = -1; /* This value unused. */
9060 switch (argv[0][0] << 8 | argv[0][1])
9062 case '>' << 8 | '=':
9063 result = comp1 >= 0;
9065 case '!' << 8 | '<':
9066 result = comp1 >= 0 || switch_value == NULL;
9071 case '!' << 8 | '>':
9072 result = comp1 < 0 || switch_value == NULL;
9074 case '>' << 8 | '<':
9075 result = comp1 >= 0 && comp2 < 0;
9077 case '<' << 8 | '>':
9078 result = comp1 < 0 || comp2 >= 0;
9082 fatal_error (input_location,
9083 "unknown operator %qs in %%:version-compare", argv[0]);
9088 return argv[nargs + 2];
9091 /* %:include builtin spec function. This differs from %include in that it
9092 can be nested inside a spec, and thus be conditionalized. It takes
9093 one argument, the filename, and looks for it in the startfile path.
9094 The result is always NULL, i.e. an empty expansion. */
9097 include_spec_function (int argc, const char **argv)
9104 file = find_a_file (&startfile_prefixes, argv[0], R_OK, true);
9105 read_specs (file ? file : argv[0], false, false);
9110 /* %:find-file spec function. This function replaces its argument by
9111 the file found through find_file, that is the -print-file-name gcc
9114 find_file_spec_function (int argc, const char **argv)
9121 file = find_file (argv[0]);
9126 /* %:find-plugindir spec function. This function replaces its argument
9127 by the -iplugindir=<dir> option. `dir' is found through find_file, that
9128 is the -print-file-name gcc program option. */
9130 find_plugindir_spec_function (int argc, const char **argv ATTRIBUTE_UNUSED)
9137 option = concat ("-iplugindir=", find_file ("plugin"), NULL);
9142 /* %:print-asm-header spec function. Print a banner to say that the
9143 following output is from the assembler. */
9146 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED,
9147 const char **argv ATTRIBUTE_UNUSED)
9149 printf (_("Assembler options\n=================\n\n"));
9150 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
9155 /* Get a random number for -frandom-seed */
9157 static unsigned HOST_WIDE_INT
9158 get_random_number (void)
9160 unsigned HOST_WIDE_INT ret = 0;
9163 fd = open ("/dev/urandom", O_RDONLY);
9166 read (fd, &ret, sizeof (HOST_WIDE_INT));
9172 /* Get some more or less random data. */
9173 #ifdef HAVE_GETTIMEOFDAY
9177 gettimeofday (&tv, NULL);
9178 ret = tv.tv_sec * 1000 + tv.tv_usec / 1000;
9182 time_t now = time (NULL);
9184 if (now != (time_t)-1)
9185 ret = (unsigned) now;
9189 return ret ^ getpid ();
9192 /* %:compare-debug-dump-opt spec function. Save the last argument,
9193 expected to be the last -fdump-final-insns option, or generate a
9197 compare_debug_dump_opt_spec_function (int arg,
9198 const char **argv ATTRIBUTE_UNUSED)
9203 static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3];
9206 fatal_error (input_location,
9207 "too many arguments to %%:compare-debug-dump-opt");
9209 do_spec_2 ("%{fdump-final-insns=*:%*}");
9210 do_spec_1 (" ", 0, NULL);
9212 if (argbuf.length () > 0
9213 && strcmp (argv[argbuf.length () - 1], "."))
9218 name = xstrdup (argv[argbuf.length () - 1]);
9223 const char *ext = NULL;
9225 if (argbuf.length () > 0)
9227 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
9230 else if (!compare_debug)
9233 do_spec_2 ("%g.gkd");
9235 do_spec_1 (" ", 0, NULL);
9237 gcc_assert (argbuf.length () > 0);
9239 name = concat (argbuf.last (), ext, NULL);
9241 ret = concat ("-fdump-final-insns=", name, NULL);
9244 which = compare_debug < 0;
9245 debug_check_temp_file[which] = name;
9249 unsigned HOST_WIDE_INT value = get_random_number ();
9251 sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value);
9257 ret = concat ("%{!frandom-seed=*:-frandom-seed=", random_seed, "} ",
9268 static const char *debug_auxbase_opt;
9270 /* %:compare-debug-self-opt spec function. Expands to the options
9271 that are to be passed in the second compilation of
9275 compare_debug_self_opt_spec_function (int arg,
9276 const char **argv ATTRIBUTE_UNUSED)
9279 fatal_error (input_location,
9280 "too many arguments to %%:compare-debug-self-opt");
9282 if (compare_debug >= 0)
9285 do_spec_2 ("%{c|S:%{o*:%*}}");
9286 do_spec_1 (" ", 0, NULL);
9288 if (argbuf.length () > 0)
9289 debug_auxbase_opt = concat ("-auxbase-strip ",
9293 debug_auxbase_opt = NULL;
9296 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
9297 %<fdump-final-insns=* -w -S -o %j \
9298 %{!fcompare-debug-second:-fcompare-debug-second} \
9299 ", compare_debug_opt, NULL);
9302 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
9303 options that are to be passed in the second compilation of
9304 compare-debug. It expects, as an argument, the basename of the
9305 current input file name, with the .gk suffix appended to it. */
9308 compare_debug_auxbase_opt_spec_function (int arg,
9315 fatal_error (input_location,
9316 "too few arguments to %%:compare-debug-auxbase-opt");
9319 fatal_error (input_location,
9320 "too many arguments to %%:compare-debug-auxbase-opt");
9322 if (compare_debug >= 0)
9325 len = strlen (argv[0]);
9326 if (len < 3 || strcmp (argv[0] + len - 3, ".gk") != 0)
9327 fatal_error (input_location, "argument to %%:compare-debug-auxbase-opt "
9328 "does not end in .gk");
9330 if (debug_auxbase_opt)
9331 return debug_auxbase_opt;
9333 #define OPT "-auxbase "
9336 name = (char*) xmalloc (sizeof (OPT) + len);
9337 memcpy (name, OPT, sizeof (OPT) - 1);
9338 memcpy (name + sizeof (OPT) - 1, argv[0], len);
9339 name[sizeof (OPT) - 1 + len] = '\0';
9346 /* %:pass-through-libs spec function. Finds all -l options and input
9347 file names in the lib spec passed to it, and makes a list of them
9348 prepended with the plugin option to cause them to be passed through
9349 to the final link after all the new object files have been added. */
9352 pass_through_libs_spec_func (int argc, const char **argv)
9354 char *prepended = xstrdup (" ");
9356 /* Shlemiel the painter's algorithm. Innately horrible, but at least
9357 we know that there will never be more than a handful of strings to
9358 concat, and it's only once per run, so it's not worth optimising. */
9359 for (n = 0; n < argc; n++)
9361 char *old = prepended;
9362 /* Anything that isn't an option is a full path to an output
9363 file; pass it through if it ends in '.a'. Among options,
9365 if (argv[n][0] == '-' && argv[n][1] == 'l')
9367 const char *lopt = argv[n] + 2;
9368 /* Handle both joined and non-joined -l options. If for any
9369 reason there's a trailing -l with no joined or following
9370 arg just discard it. */
9371 if (!*lopt && ++n >= argc)
9375 prepended = concat (prepended, "-plugin-opt=-pass-through=-l",
9378 else if (!strcmp (".a", argv[n] + strlen (argv[n]) - 2))
9380 prepended = concat (prepended, "-plugin-opt=-pass-through=",
9381 argv[n], " ", NULL);
9383 if (prepended != old)
9389 /* %:replace-extension spec function. Replaces the extension of the
9390 first argument with the second argument. */
9393 replace_extension_spec_func (int argc, const char **argv)
9401 fatal_error (input_location, "too few arguments to %%:replace-extension");
9403 name = xstrdup (argv[0]);
9405 for (i = strlen (name) - 1; i >= 0; i--)
9406 if (IS_DIR_SEPARATOR (name[i]))
9409 p = strrchr (name + i + 1, '.');
9413 result = concat (name, argv[1], NULL);
9419 /* Insert backslash before spaces in ORIG (usually a file path), to
9420 avoid being broken by spec parser.
9422 This function is needed as do_spec_1 treats white space (' ' and '\t')
9423 as the end of an argument. But in case of -plugin /usr/gcc install/xxx.so,
9424 the file name should be treated as a single argument rather than being
9425 broken into multiple. Solution is to insert '\\' before the space in a
9428 This function converts and only converts all occurrence of ' '
9429 to '\\' + ' ' and '\t' to '\\' + '\t'. For example:
9433 "a\\ b" -> "a\\\\ b"
9435 orig: input null-terminating string that was allocated by xalloc. The
9436 memory it points to might be freed in this function. Behavior undefined
9437 if ORIG wasn't xalloced or was freed already at entry.
9439 Return: ORIG if no conversion needed. Otherwise a newly allocated string
9440 that was converted from ORIG. */
9443 convert_white_space (char *orig)
9445 int len, number_of_space = 0;
9447 for (len = 0; orig[len]; len++)
9448 if (orig[len] == ' ' || orig[len] == '\t') number_of_space++;
9450 if (number_of_space)
9452 char *new_spec = (char *) xmalloc (len + number_of_space + 1);
9454 for (j = 0, k = 0; j <= len; j++, k++)
9456 if (orig[j] == ' ' || orig[j] == '\t')
9457 new_spec[k++] = '\\';
9458 new_spec[k] = orig[j];