1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987-2015 Free Software Foundation, Inc.
4 This file is part of GCC.
6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 3, or (at your option) any later
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING3. If not see
18 <http://www.gnu.org/licenses/>. */
20 /* This program is the user interface to the C compiler and possibly to
21 other compilers. It is used because compilation is a complicated procedure
22 which involves running several programs and passing temporary files between
23 them, forwarding the users switches to those programs selectively,
24 and deleting the temporary files at the end.
26 CC recognizes how to compile each input file by suffixes in the file names.
27 Once it knows which kind of compilation to perform, the procedure for
28 compilation is specified by a string called a "spec". */
32 #include "coretypes.h"
33 #include "multilib.h" /* before tm.h */
40 #include "diagnostic.h"
45 #include "filenames.h"
47 /* By default there is no special suffix for target executables. */
48 /* FIXME: when autoconf is fixed, remove the host check - dj */
49 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
50 #define HAVE_TARGET_EXECUTABLE_SUFFIX
53 /* By default there is no special suffix for host executables. */
54 #ifdef HOST_EXECUTABLE_SUFFIX
55 #define HAVE_HOST_EXECUTABLE_SUFFIX
57 #define HOST_EXECUTABLE_SUFFIX ""
60 /* By default, the suffix for target object files is ".o". */
61 #ifdef TARGET_OBJECT_SUFFIX
62 #define HAVE_TARGET_OBJECT_SUFFIX
64 #define TARGET_OBJECT_SUFFIX ".o"
67 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
69 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
70 #ifndef LIBRARY_PATH_ENV
71 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
74 /* If a stage of compilation returns an exit status >= 1,
75 compilation of that file ceases. */
77 #define MIN_FATAL_STATUS 1
79 /* Flag set by cppspec.c to 1. */
82 /* Flag set to nonzero if an @file argument has been supplied to gcc. */
83 static bool at_file_supplied;
85 /* Definition of string containing the arguments given to configure. */
86 #include "configargs.h"
88 /* Flag saying to print the command line options understood by gcc and its
91 static int print_help_list;
93 /* Flag saying to print the version of gcc and its sub-processes. */
95 static int print_version;
97 /* Flag indicating whether we should ONLY print the command and
98 arguments (like verbose_flag) without executing the command.
99 Displayed arguments are quoted so that the generated command
100 line is suitable for execution. This is intended for use in
101 shell scripts to capture the driver-generated command line. */
102 static int verbose_only_flag;
104 /* Flag indicating how to print command line options of sub-processes. */
106 static int print_subprocess_help;
108 /* Linker suffix passed to -fuse-ld=... */
109 static const char *use_ld;
111 /* Whether we should report subprocess execution times to a file. */
113 FILE *report_times_to_file = NULL;
115 /* Nonzero means place this string before uses of /, so that include
116 and library files can be found in an alternate location. */
118 #ifdef TARGET_SYSTEM_ROOT
119 static const char *target_system_root = TARGET_SYSTEM_ROOT;
121 static const char *target_system_root = 0;
124 /* Nonzero means pass the updated target_system_root to the compiler. */
126 static int target_system_root_changed;
128 /* Nonzero means append this string to target_system_root. */
130 static const char *target_sysroot_suffix = 0;
132 /* Nonzero means append this string to target_system_root for headers. */
134 static const char *target_sysroot_hdrs_suffix = 0;
136 /* Nonzero means write "temp" files in source directory
137 and use the source file's name in them, and don't delete them. */
139 static enum save_temps {
140 SAVE_TEMPS_NONE, /* no -save-temps */
141 SAVE_TEMPS_CWD, /* -save-temps in current directory */
142 SAVE_TEMPS_OBJ /* -save-temps in object directory */
145 /* Output file to use to get the object directory for -save-temps=obj */
146 static char *save_temps_prefix = 0;
147 static size_t save_temps_length = 0;
149 /* The compiler version. */
151 static const char *compiler_version;
153 /* The target version. */
155 static const char *const spec_version = DEFAULT_TARGET_VERSION;
157 /* The target machine. */
159 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
160 static const char *spec_host_machine = DEFAULT_REAL_TARGET_MACHINE;
162 /* List of offload targets. */
164 static char *offload_targets = NULL;
166 /* Nonzero if cross-compiling.
167 When -b is used, the value comes from the `specs' file. */
169 #ifdef CROSS_DIRECTORY_STRUCTURE
170 static const char *cross_compile = "1";
172 static const char *cross_compile = "0";
175 /* Greatest exit code of sub-processes that has been encountered up to
177 static int greatest_status = 1;
179 /* This is the obstack which we use to allocate many strings. */
181 static struct obstack obstack;
183 /* This is the obstack to build an environment variable to pass to
184 collect2 that describes all of the relevant switches of what to
185 pass the compiler in building the list of pointers to constructors
188 static struct obstack collect_obstack;
190 /* Forward declaration for prototypes. */
194 static void init_spec (void);
195 static void store_arg (const char *, int, int);
196 static void insert_wrapper (const char *);
197 static char *load_specs (const char *);
198 static void read_specs (const char *, bool, bool);
199 static void set_spec (const char *, const char *, bool);
200 static struct compiler *lookup_compiler (const char *, size_t, const char *);
201 static char *build_search_list (const struct path_prefix *, const char *,
203 static void xputenv (const char *);
204 static void putenv_from_prefixes (const struct path_prefix *, const char *,
206 static int access_check (const char *, int);
207 static char *find_a_file (const struct path_prefix *, const char *, int, bool);
208 static void add_prefix (struct path_prefix *, const char *, const char *,
210 static void add_sysrooted_prefix (struct path_prefix *, const char *,
211 const char *, int, int, int);
212 static char *skip_whitespace (char *);
213 static void delete_if_ordinary (const char *);
214 static void delete_temp_files (void);
215 static void delete_failure_queue (void);
216 static void clear_failure_queue (void);
217 static int check_live_switch (int, int);
218 static const char *handle_braces (const char *);
219 static inline bool input_suffix_matches (const char *, const char *);
220 static inline bool switch_matches (const char *, const char *, int);
221 static inline void mark_matching_switches (const char *, const char *, int);
222 static inline void process_marked_switches (void);
223 static const char *process_brace_body (const char *, const char *, const char *, int, int);
224 static const struct spec_function *lookup_spec_function (const char *);
225 static const char *eval_spec_function (const char *, const char *);
226 static const char *handle_spec_function (const char *, bool *);
227 static char *save_string (const char *, int);
228 static void set_collect_gcc_options (void);
229 static int do_spec_1 (const char *, int, const char *);
230 static int do_spec_2 (const char *);
231 static void do_option_spec (const char *, const char *);
232 static void do_self_spec (const char *);
233 static const char *find_file (const char *);
234 static int is_directory (const char *, bool);
235 static const char *validate_switches (const char *, bool);
236 static void validate_all_switches (void);
237 static inline void validate_switches_from_spec (const char *, bool);
238 static void give_switch (int, int);
239 static int used_arg (const char *, int);
240 static int default_arg (const char *, int);
241 static void set_multilib_dir (void);
242 static void print_multilib_info (void);
243 static void perror_with_name (const char *);
244 static void display_help (void);
245 static void add_preprocessor_option (const char *, int);
246 static void add_assembler_option (const char *, int);
247 static void add_linker_option (const char *, int);
248 static void process_command (unsigned int, struct cl_decoded_option *);
249 static int execute (void);
250 static void alloc_args (void);
251 static void clear_args (void);
252 static void fatal_signal (int);
253 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
254 static void init_gcc_specs (struct obstack *, const char *, const char *,
257 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
258 static const char *convert_filename (const char *, int, int);
261 static void try_generate_repro (const char **argv);
262 static const char *getenv_spec_function (int, const char **);
263 static const char *if_exists_spec_function (int, const char **);
264 static const char *if_exists_else_spec_function (int, const char **);
265 static const char *sanitize_spec_function (int, const char **);
266 static const char *replace_outfile_spec_function (int, const char **);
267 static const char *remove_outfile_spec_function (int, const char **);
268 static const char *version_compare_spec_function (int, const char **);
269 static const char *include_spec_function (int, const char **);
270 static const char *find_file_spec_function (int, const char **);
271 static const char *find_plugindir_spec_function (int, const char **);
272 static const char *print_asm_header_spec_function (int, const char **);
273 static const char *compare_debug_dump_opt_spec_function (int, const char **);
274 static const char *compare_debug_self_opt_spec_function (int, const char **);
275 static const char *compare_debug_auxbase_opt_spec_function (int, const char **);
276 static const char *pass_through_libs_spec_func (int, const char **);
277 static const char *replace_extension_spec_func (int, const char **);
278 static char *convert_white_space (char *);
280 /* The Specs Language
282 Specs are strings containing lines, each of which (if not blank)
283 is made up of a program name, and arguments separated by spaces.
284 The program name must be exact and start from root, since no path
285 is searched and it is unreliable to depend on the current working directory.
286 Redirection of input or output is not supported; the subprograms must
287 accept filenames saying what files to read and write.
289 In addition, the specs can contain %-sequences to substitute variable text
290 or for conditional text. Here is a table of all defined %-sequences.
291 Note that spaces are not generated automatically around the results of
292 expanding these sequences; therefore, you can concatenate them together
293 or with constant text in a single argument.
295 %% substitute one % into the program name or argument.
296 %i substitute the name of the input file being processed.
297 %b substitute the basename of the input file being processed.
298 This is the substring up to (and not including) the last period
299 and not including the directory unless -save-temps was specified
300 to put temporaries in a different location.
301 %B same as %b, but include the file suffix (text after the last period).
303 substitute a file name that has suffix SUFFIX and is chosen
304 once per compilation, and mark the argument a la %d. To reduce
305 exposure to denial-of-service attacks, the file name is now
306 chosen in a way that is hard to predict even when previously
307 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
308 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
309 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
310 had been pre-processed. Previously, %g was simply substituted
311 with a file name chosen once per compilation, without regard
312 to any appended suffix (which was therefore treated just like
313 ordinary text), making such attacks more likely to succeed.
315 like %g, but if -pipe is in effect, expands simply to "-".
317 like %g, but if -pipe is in effect, expands to nothing. (We have both
318 %| and %m to accommodate differences between system assemblers; see
319 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
321 like %g, but generates a new temporary file name even if %uSUFFIX
324 substitutes the last file name generated with %uSUFFIX, generating a
325 new one if there is no such last file name. In the absence of any
326 %uSUFFIX, this is just like %gSUFFIX, except they don't share
327 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
328 would involve the generation of two distinct file names, one
329 for each `%g.s' and another for each `%U.s'. Previously, %U was
330 simply substituted with a file name chosen for the previous %u,
331 without regard to any appended suffix.
333 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
334 writable, and if save-temps is off; otherwise, substitute the name
335 of a temporary file, just like %u. This temporary file is not
336 meant for communication between processes, but rather as a junk
339 substitutes .SUFFIX for the suffixes of a matched switch's args when
340 it is subsequently output with %*. SUFFIX is terminated by the next
342 %d marks the argument containing or following the %d as a
343 temporary file name, so that that file will be deleted if GCC exits
344 successfully. Unlike %g, this contributes no text to the argument.
345 %w marks the argument containing or following the %w as the
346 "output file" of this compilation. This puts the argument
347 into the sequence of arguments that %o will substitute later.
348 %V indicates that this compilation produces no "output file".
350 like %{...} but mark last argument supplied within
351 as a file to be deleted on failure.
352 %o substitutes the names of all the output files, with spaces
353 automatically placed around them. You should write spaces
354 around the %o as well or the results are undefined.
355 %o is for use in the specs for running the linker.
356 Input files whose names have no recognized suffix are not compiled
357 at all, but they are included among the output files, so they will
359 %O substitutes the suffix for object files. Note that this is
360 handled specially when it immediately follows %g, %u, or %U
361 (with or without a suffix argument) because of the need for
362 those to form complete file names. The handling is such that
363 %O is treated exactly as if it had already been substituted,
364 except that %g, %u, and %U do not currently support additional
365 SUFFIX characters following %O as they would following, for
367 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
368 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
369 and -B options) and -imultilib as necessary.
370 %s current argument is the name of a library or startup file of some sort.
371 Search for that file in a standard list of directories
372 and substitute the full name found.
373 %eSTR Print STR as an error message. STR is terminated by a newline.
374 Use this when inconsistent options are detected.
375 %nSTR Print STR as a notice. STR is terminated by a newline.
376 %x{OPTION} Accumulate an option for %X.
377 %X Output the accumulated linker options specified by compilations.
378 %Y Output the accumulated assembler options specified by compilations.
379 %Z Output the accumulated preprocessor options specified by compilations.
380 %a process ASM_SPEC as a spec.
381 This allows config.h to specify part of the spec for running as.
382 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
383 used here. This can be used to run a post-processor after the
384 assembler has done its job.
385 %D Dump out a -L option for each directory in startfile_prefixes.
386 If multilib_dir is set, extra entries are generated with it affixed.
387 %l process LINK_SPEC as a spec.
388 %L process LIB_SPEC as a spec.
389 %M Output multilib_os_dir.
390 %G process LIBGCC_SPEC as a spec.
391 %R Output the concatenation of target_system_root and
392 target_sysroot_suffix.
393 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
394 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
395 %C process CPP_SPEC as a spec.
396 %1 process CC1_SPEC as a spec.
397 %2 process CC1PLUS_SPEC as a spec.
398 %* substitute the variable part of a matched option. (See below.)
399 Note that each comma in the substituted string is replaced by
400 a single space. A space is appended after the last substition
401 unless there is more text in current sequence.
402 %<S remove all occurrences of -S from the command line.
403 Note - this command is position dependent. % commands in the
404 spec string before this one will see -S, % commands in the
405 spec string after this one will not.
406 %>S Similar to "%<S", but keep it in the GCC command line.
407 %<S* remove all occurrences of all switches beginning with -S from the
410 Call the named function FUNCTION, passing it ARGS. ARGS is
411 first processed as a nested spec string, then split into an
412 argument vector in the usual fashion. The function returns
413 a string which is processed as if it had appeared literally
414 as part of the current spec.
415 %{S} substitutes the -S switch, if that switch was given to GCC.
416 If that switch was not specified, this substitutes nothing.
417 Here S is a metasyntactic variable.
418 %{S*} substitutes all the switches specified to GCC whose names start
419 with -S. This is used for -o, -I, etc; switches that take
420 arguments. GCC considers `-o foo' as being one switch whose
421 name starts with `o'. %{o*} would substitute this text,
422 including the space; thus, two arguments would be generated.
423 %{S*&T*} likewise, but preserve order of S and T options (the order
424 of S and T in the spec is not significant). Can be any number
425 of ampersand-separated variables; for each the wild card is
426 optional. Useful for CPP as %{D*&U*&A*}.
428 %{S:X} substitutes X, if the -S switch was given to GCC.
429 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
430 %{S*:X} substitutes X if one or more switches whose names start
431 with -S was given to GCC. Normally X is substituted only
432 once, no matter how many such switches appeared. However,
433 if %* appears somewhere in X, then X will be substituted
434 once for each matching switch, with the %* replaced by the
435 part of that switch that matched the '*'. A space will be
436 appended after the last substition unless there is more
437 text in current sequence.
438 %{.S:X} substitutes X, if processing a file with suffix S.
439 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
440 %{,S:X} substitutes X, if processing a file which will use spec S.
441 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
443 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
444 combined with '!', '.', ',', and '*' as above binding stronger
446 If %* appears in X, all of the alternatives must be starred, and
447 only the first matching alternative is substituted.
448 %{%:function(args):X}
449 Call function named FUNCTION with args ARGS. If the function
450 returns non-NULL, then X is substituted, if it returns
451 NULL, it isn't substituted.
452 %{S:X; if S was given to GCC, substitutes X;
453 T:Y; else if T was given to GCC, substitutes Y;
454 :D} else substitutes D. There can be as many clauses as you need.
455 This may be combined with '.', '!', ',', '|', and '*' as above.
457 %(Spec) processes a specification defined in a specs file as *Spec:
459 The conditional text X in a %{S:X} or similar construct may contain
460 other nested % constructs or spaces, or even newlines. They are
461 processed as usual, as described above. Trailing white space in X is
462 ignored. White space may also appear anywhere on the left side of the
463 colon in these constructs, except between . or * and the corresponding
466 The -O, -f, -g, -m, and -W switches are handled specifically in these
467 constructs. If another value of -O or the negated form of a -f, -m, or
468 -W switch is found later in the command line, the earlier switch
469 value is ignored, except with {S*} where S is just one letter; this
470 passes all matching options.
472 The character | at the beginning of the predicate text is used to indicate
473 that a command should be piped to the following command, but only if -pipe
476 Note that it is built into GCC which switches take arguments and which
477 do not. You might think it would be useful to generalize this to
478 allow each compiler's spec to say which switches take arguments. But
479 this cannot be done in a consistent fashion. GCC cannot even decide
480 which input files have been specified without knowing which switches
481 take arguments, and it must know which input files to compile in order
482 to tell which compilers to run.
484 GCC also knows implicitly that arguments starting in `-l' are to be
485 treated as compiler output files, and passed to the linker in their
486 proper position among the other output files. */
488 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
490 /* config.h can define ASM_SPEC to provide extra args to the assembler
491 or extra switch-translations. */
496 /* config.h can define ASM_FINAL_SPEC to run a post processor after
497 the assembler has run. */
498 #ifndef ASM_FINAL_SPEC
499 #define ASM_FINAL_SPEC \
501 objcopy --extract-dwo \
502 %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \
503 %{c:%{o*:%:replace-extension(%{o*:%*} .dwo)}%{!o*:%b.dwo}}%{!c:%b.dwo} \n\
504 objcopy --strip-dwo \
505 %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \
509 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
510 or extra switch-translations. */
515 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
516 or extra switch-translations. */
521 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
522 or extra switch-translations. */
524 #define CC1PLUS_SPEC ""
527 /* config.h can define LINK_SPEC to provide extra args to the linker
528 or extra switch-translations. */
533 /* config.h can define LIB_SPEC to override the default libraries. */
535 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
538 /* When using -fsplit-stack we need to wrap pthread_create, in order
539 to initialize the stack guard. We always use wrapping, rather than
540 shared library ordering, and we keep the wrapper function in
541 libgcc. This is not yet a real spec, though it could become one;
542 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping
543 only works with GNU ld and gold. */
544 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}"
547 #define STATIC_LIBASAN_LIBS \
548 " %{static-libasan:%:include(libsanitizer.spec)%(link_libasan)}"
549 #ifdef LIBASAN_EARLY_SPEC
550 #define LIBASAN_SPEC STATIC_LIBASAN_LIBS
551 #elif defined(HAVE_LD_STATIC_DYNAMIC)
552 #define LIBASAN_SPEC "%{static-libasan:" LD_STATIC_OPTION \
553 "} -lasan %{static-libasan:" LD_DYNAMIC_OPTION "}" \
556 #define LIBASAN_SPEC "-lasan" STATIC_LIBASAN_LIBS
560 #ifndef LIBASAN_EARLY_SPEC
561 #define LIBASAN_EARLY_SPEC ""
565 #define STATIC_LIBTSAN_LIBS \
566 " %{static-libtsan:%:include(libsanitizer.spec)%(link_libtsan)}"
567 #ifdef LIBTSAN_EARLY_SPEC
568 #define LIBTSAN_SPEC STATIC_LIBTSAN_LIBS
569 #elif defined(HAVE_LD_STATIC_DYNAMIC)
570 #define LIBTSAN_SPEC "%{static-libtsan:" LD_STATIC_OPTION \
571 "} -ltsan %{static-libtsan:" LD_DYNAMIC_OPTION "}" \
574 #define LIBTSAN_SPEC "-ltsan" STATIC_LIBTSAN_LIBS
578 #ifndef LIBTSAN_EARLY_SPEC
579 #define LIBTSAN_EARLY_SPEC ""
583 #define STATIC_LIBLSAN_LIBS \
584 " %{static-liblsan:%:include(libsanitizer.spec)%(link_liblsan)}"
585 #ifdef LIBLSAN_EARLY_SPEC
586 #define LIBLSAN_SPEC STATIC_LIBLSAN_LIBS
587 #elif defined(HAVE_LD_STATIC_DYNAMIC)
588 #define LIBLSAN_SPEC "%{static-liblsan:" LD_STATIC_OPTION \
589 "} -llsan %{static-liblsan:" LD_DYNAMIC_OPTION "}" \
592 #define LIBLSAN_SPEC "-llsan" STATIC_LIBLSAN_LIBS
596 #ifndef LIBLSAN_EARLY_SPEC
597 #define LIBLSAN_EARLY_SPEC ""
600 #ifndef LIBUBSAN_SPEC
601 #define STATIC_LIBUBSAN_LIBS \
602 " %{static-libubsan:%:include(libsanitizer.spec)%(link_libubsan)}"
603 #ifdef HAVE_LD_STATIC_DYNAMIC
604 #define LIBUBSAN_SPEC "%{static-libubsan:" LD_STATIC_OPTION \
605 "} -lubsan %{static-libubsan:" LD_DYNAMIC_OPTION "}" \
608 #define LIBUBSAN_SPEC "-lubsan" STATIC_LIBUBSAN_LIBS
612 /* Linker options for compressed debug sections. */
613 #if HAVE_LD_COMPRESS_DEBUG == 0
614 /* No linker support. */
615 #define LINK_COMPRESS_DEBUG_SPEC \
616 " %{gz*:%e-gz is not supported in this configuration} "
617 #elif HAVE_LD_COMPRESS_DEBUG == 1
618 /* GNU style on input, GNU ld options. Reject, not useful. */
619 #define LINK_COMPRESS_DEBUG_SPEC \
620 " %{gz*:%e-gz is not supported in this configuration} "
621 #elif HAVE_LD_COMPRESS_DEBUG == 2
622 /* GNU style, GNU gold options. */
623 #define LINK_COMPRESS_DEBUG_SPEC \
624 " %{gz|gz=zlib-gnu:" LD_COMPRESS_DEBUG_OPTION "=zlib}" \
625 " %{gz=none:" LD_COMPRESS_DEBUG_OPTION "=none}" \
626 " %{gz=zlib:%e-gz=zlib is not supported in this configuration} "
627 #elif HAVE_LD_COMPRESS_DEBUG == 3
628 /* ELF gABI style. */
629 #define LINK_COMPRESS_DEBUG_SPEC \
630 " %{gz|gz=zlib:" LD_COMPRESS_DEBUG_OPTION "=zlib}" \
631 " %{gz=none:" LD_COMPRESS_DEBUG_OPTION "=none}" \
632 " %{gz=zlib-gnu:" LD_COMPRESS_DEBUG_OPTION "=zlib-gnu} "
634 #error Unknown value for HAVE_LD_COMPRESS_DEBUG.
637 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
640 #if defined(REAL_LIBGCC_SPEC)
641 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
642 #elif defined(LINK_LIBGCC_SPECIAL_1)
643 /* Have gcc do the search for libgcc.a. */
644 #define LIBGCC_SPEC "libgcc.a%s"
646 #define LIBGCC_SPEC "-lgcc"
650 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
651 #ifndef STARTFILE_SPEC
652 #define STARTFILE_SPEC \
653 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
656 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
658 #define ENDFILE_SPEC ""
662 #define LINKER_NAME "collect2"
665 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
666 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
671 /* Assembler options for compressed debug sections. */
672 #if HAVE_LD_COMPRESS_DEBUG < 2
673 /* Reject if the linker cannot write compressed debug sections. */
674 #define ASM_COMPRESS_DEBUG_SPEC \
675 " %{gz*:%e-gz is not supported in this configuration} "
676 #else /* HAVE_LD_COMPRESS_DEBUG >= 2 */
677 #if HAVE_AS_COMPRESS_DEBUG == 0
678 /* No assembler support. Ignore silently. */
679 #define ASM_COMPRESS_DEBUG_SPEC \
681 #elif HAVE_AS_COMPRESS_DEBUG == 1
682 /* GNU style, GNU as options. */
683 #define ASM_COMPRESS_DEBUG_SPEC \
684 " %{gz|gz=zlib-gnu:" AS_COMPRESS_DEBUG_OPTION "}" \
685 " %{gz=none:" AS_NO_COMPRESS_DEBUG_OPTION "}" \
686 " %{gz=zlib:%e-gz=zlib is not supported in this configuration} "
687 #elif HAVE_AS_COMPRESS_DEBUG == 2
688 /* ELF gABI style. */
689 #define ASM_COMPRESS_DEBUG_SPEC \
690 " %{gz|gz=zlib:" AS_COMPRESS_DEBUG_OPTION "=zlib}" \
691 " %{gz=none:" AS_COMPRESS_DEBUG_OPTION "=none}" \
692 " %{gz=zlib-gnu:" AS_COMPRESS_DEBUG_OPTION "=zlib-gnu} "
694 #error Unknown value for HAVE_AS_COMPRESS_DEBUG.
696 #endif /* HAVE_LD_COMPRESS_DEBUG >= 2 */
698 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
700 #ifndef ASM_DEBUG_SPEC
701 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
702 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
703 # define ASM_DEBUG_SPEC \
704 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
705 ? "%{!g0:%{gdwarf*:--gdwarf2}%{!gdwarf*:%{g*:--gstabs}}}" ASM_MAP \
706 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
708 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
709 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
711 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
712 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
716 #ifndef ASM_DEBUG_SPEC
717 # define ASM_DEBUG_SPEC ""
720 /* Here is the spec for running the linker, after compiling all files. */
722 /* This is overridable by the target in case they need to specify the
723 -lgcc and -lc order specially, yet not require them to override all
724 of LINK_COMMAND_SPEC. */
725 #ifndef LINK_GCC_C_SEQUENCE_SPEC
726 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
729 #ifndef LINK_SSP_SPEC
730 #ifdef TARGET_LIBC_PROVIDES_SSP
731 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
732 "|fstack-protector-strong|fstack-protector-explicit:}"
734 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
735 "|fstack-protector-strong|fstack-protector-explicit" \
736 ":-lssp_nonshared -lssp}"
740 #ifndef LINK_PIE_SPEC
742 #define LINK_PIE_SPEC "%{pie:-pie} "
744 #define LINK_PIE_SPEC "%{pie:} "
748 #ifndef LINK_BUILDID_SPEC
749 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
750 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
754 /* Conditional to test whether the LTO plugin is used or not.
755 FIXME: For slim LTO we will need to enable plugin unconditionally. This
756 still cause problems with PLUGIN_LD != LD and when plugin is built but
757 not useable. For GCC 4.6 we don't support slim LTO and thus we can enable
758 plugin only when LTO is enabled. We still honor explicit
759 -fuse-linker-plugin if the linker used understands -plugin. */
761 /* The linker has some plugin support. */
762 #if HAVE_LTO_PLUGIN > 0
763 /* The linker used has full plugin support, use LTO plugin by default. */
764 #if HAVE_LTO_PLUGIN == 2
765 #define PLUGIN_COND "!fno-use-linker-plugin:%{!fno-lto"
766 #define PLUGIN_COND_CLOSE "}"
768 /* The linker used has limited plugin support, use LTO plugin with explicit
769 -fuse-linker-plugin. */
770 #define PLUGIN_COND "fuse-linker-plugin"
771 #define PLUGIN_COND_CLOSE ""
773 #define LINK_PLUGIN_SPEC \
775 -plugin %(linker_plugin_file) \
776 -plugin-opt=%(lto_wrapper) \
777 -plugin-opt=-fresolution=%u.res \
778 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
781 /* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */
782 #define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\
783 %e-fuse-linker-plugin is not supported in this configuration}"
786 /* Linker command line options for -fsanitize= early on the command line. */
787 #ifndef SANITIZER_EARLY_SPEC
788 #define SANITIZER_EARLY_SPEC "\
789 %{!nostdlib:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_EARLY_SPEC "} \
790 %{%:sanitize(thread):" LIBTSAN_EARLY_SPEC "} \
791 %{%:sanitize(leak):" LIBLSAN_EARLY_SPEC "}}}"
794 /* Linker command line options for -fsanitize= late on the command line. */
795 #ifndef SANITIZER_SPEC
796 #define SANITIZER_SPEC "\
797 %{!nostdlib:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_SPEC "\
798 %{static:%ecannot specify -static with -fsanitize=address}}\
799 %{%:sanitize(thread):" LIBTSAN_SPEC "\
800 %{static:%ecannot specify -static with -fsanitize=thread}}\
801 %{%:sanitize(undefined):" LIBUBSAN_SPEC "}\
802 %{%:sanitize(leak):" LIBLSAN_SPEC "}}}"
805 /* This is the spec to use, once the code for creating the vtable
806 verification runtime library, libvtv.so, has been created. Currently
807 the vtable verification runtime functions are in libstdc++, so we use
808 the spec just below this one. */
809 #ifndef VTABLE_VERIFICATION_SPEC
810 #define VTABLE_VERIFICATION_SPEC "\
811 %{!nostdlib:%{fvtable-verify=std: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}\
812 %{fvtable-verify=preinit: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}}"
815 /* -u* was put back because both BSD and SysV seem to support it. */
816 /* %{static:} simply prevents an error message if the target machine
817 doesn't handle -static. */
818 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
819 scripts which exist in user specified directories, or in standard
821 /* We pass any -flto flags on to the linker, which is expected
822 to understand them. In practice, this means it had better be collect2. */
823 /* %{e*} includes -export-dynamic; see comment in common.opt. */
824 #ifndef LINK_COMMAND_SPEC
825 #define LINK_COMMAND_SPEC "\
826 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
829 "%{flto|flto=*:%<fcompare-debug*} \
830 %{flto} %{fno-lto} %{flto=*} %l " LINK_PIE_SPEC \
831 "%{fuse-ld=*:-fuse-ld=%*} " LINK_COMPRESS_DEBUG_SPEC \
832 "%X %{o*} %{e*} %{N} %{n} %{r}\
833 %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}} " VTABLE_VERIFICATION_SPEC " \
834 %{static:} %{L*} %(mfwrap) %(link_libgcc) " SANITIZER_EARLY_SPEC " %o\
835 %{fopenacc|fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
836 %{fcilkplus:%:include(libcilkrts.spec)%(link_cilkrts)}\
837 %{fgnu-tm:%:include(libitm.spec)%(link_itm)}\
838 %(mflib) " STACK_SPLIT_SPEC "\
839 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} " SANITIZER_SPEC " \
840 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
841 %{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}"
844 #ifndef LINK_LIBGCC_SPEC
845 /* Generate -L options for startfile prefix list. */
846 # define LINK_LIBGCC_SPEC "%D"
849 #ifndef STARTFILE_PREFIX_SPEC
850 # define STARTFILE_PREFIX_SPEC ""
854 # define SYSROOT_SPEC "--sysroot=%R"
857 #ifndef SYSROOT_SUFFIX_SPEC
858 # define SYSROOT_SUFFIX_SPEC ""
861 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
862 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
865 static const char *asm_debug = ASM_DEBUG_SPEC;
866 static const char *cpp_spec = CPP_SPEC;
867 static const char *cc1_spec = CC1_SPEC;
868 static const char *cc1plus_spec = CC1PLUS_SPEC;
869 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
870 static const char *link_ssp_spec = LINK_SSP_SPEC;
871 static const char *asm_spec = ASM_SPEC;
872 static const char *asm_final_spec = ASM_FINAL_SPEC;
873 static const char *link_spec = LINK_SPEC;
874 static const char *lib_spec = LIB_SPEC;
875 static const char *link_gomp_spec = "";
876 static const char *libgcc_spec = LIBGCC_SPEC;
877 static const char *endfile_spec = ENDFILE_SPEC;
878 static const char *startfile_spec = STARTFILE_SPEC;
879 static const char *linker_name_spec = LINKER_NAME;
880 static const char *linker_plugin_file_spec = "";
881 static const char *lto_wrapper_spec = "";
882 static const char *lto_gcc_spec = "";
883 static const char *link_command_spec = LINK_COMMAND_SPEC;
884 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
885 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
886 static const char *sysroot_spec = SYSROOT_SPEC;
887 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
888 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
889 static const char *self_spec = "";
891 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
892 There should be no need to override these in target dependent files,
893 but we need to copy them to the specs file so that newer versions
894 of the GCC driver can correctly drive older tool chains with the
895 appropriate -B options. */
897 /* When cpplib handles traditional preprocessing, get rid of this, and
898 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
899 that we default the front end language better. */
900 static const char *trad_capable_cpp =
901 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}";
903 /* We don't wrap .d files in %W{} since a missing .d file, and
904 therefore no dependency entry, confuses make into thinking a .o
905 file that happens to exist is up-to-date. */
906 static const char *cpp_unique_options =
907 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
908 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
909 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
910 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
911 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
912 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
913 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
914 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
917 /* This contains cpp options which are common with cc1_options and are passed
918 only when preprocessing only to avoid duplication. We pass the cc1 spec
919 options to the preprocessor so that it the cc1 spec may manipulate
920 options used to set target flags. Those special target flags settings may
921 in turn cause preprocessor symbols to be defined specially. */
922 static const char *cpp_options =
923 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
924 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
925 %{undef} %{save-temps*:-fpch-preprocess}";
927 /* This contains cpp options which are not passed when the preprocessor
928 output will be used by another program. */
929 static const char *cpp_debug_options = "%{d*}";
931 /* NB: This is shared amongst all front-ends, except for Ada. */
932 static const char *cc1_options =
933 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
934 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
935 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
936 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
937 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
938 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
939 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
940 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\
941 %{-target-help:--target-help}\
942 %{-version:--version}\
943 %{-help=*:--help=%*}\
944 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
945 %{fsyntax-only:-o %j} %{-param*}\
946 %{coverage:-fprofile-arcs -ftest-coverage}";
948 static const char *asm_options =
949 "%{-target-help:%:print-asm-header()} "
951 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
952 to the assembler equivalents. */
953 "%{v} %{w:-W} %{I*} "
955 ASM_COMPRESS_DEBUG_SPEC
956 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
958 static const char *invoke_as =
959 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
961 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
962 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
966 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
967 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
971 /* Some compilers have limits on line lengths, and the multilib_select
972 and/or multilib_matches strings can be very long, so we build them at
974 static struct obstack multilib_obstack;
975 static const char *multilib_select;
976 static const char *multilib_matches;
977 static const char *multilib_defaults;
978 static const char *multilib_exclusions;
979 static const char *multilib_reuse;
981 /* Check whether a particular argument is a default argument. */
983 #ifndef MULTILIB_DEFAULTS
984 #define MULTILIB_DEFAULTS { "" }
987 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
989 #ifndef DRIVER_SELF_SPECS
990 #define DRIVER_SELF_SPECS ""
993 /* Linking to libgomp implies pthreads. This is particularly important
994 for targets that use different start files and suchlike. */
995 #ifndef GOMP_SELF_SPECS
996 #define GOMP_SELF_SPECS "%{fopenacc|fopenmp|ftree-parallelize-loops=*: " \
1000 /* Likewise for -fgnu-tm. */
1001 #ifndef GTM_SELF_SPECS
1002 #define GTM_SELF_SPECS "%{fgnu-tm: -pthread}"
1005 /* Likewise for -fcilkplus. */
1006 #ifndef CILK_SELF_SPECS
1007 #define CILK_SELF_SPECS "%{fcilkplus: -pthread}"
1010 static const char *const driver_self_specs[] = {
1011 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
1012 DRIVER_SELF_SPECS, CONFIGURE_SPECS, GOMP_SELF_SPECS, GTM_SELF_SPECS,
1016 #ifndef OPTION_DEFAULT_SPECS
1017 #define OPTION_DEFAULT_SPECS { "", "" }
1026 static const struct default_spec
1027 option_default_specs[] = { OPTION_DEFAULT_SPECS };
1031 struct user_specs *next;
1032 const char *filename;
1035 static struct user_specs *user_specs_head, *user_specs_tail;
1038 /* Record the mapping from file suffixes for compilation specs. */
1042 const char *suffix; /* Use this compiler for input files
1043 whose names end in this suffix. */
1045 const char *spec; /* To use this compiler, run this spec. */
1047 const char *cpp_spec; /* If non-NULL, substitute this spec
1048 for `%C', rather than the usual
1050 const int combinable; /* If nonzero, compiler can deal with
1051 multiple source files at once (IMA). */
1052 const int needs_preprocessing; /* If nonzero, source files need to
1053 be run through a preprocessor. */
1056 /* Pointer to a vector of `struct compiler' that gives the spec for
1057 compiling a file, based on its suffix.
1058 A file that does not end in any of these suffixes will be passed
1059 unchanged to the loader and nothing else will be done to it.
1061 An entry containing two 0s is used to terminate the vector.
1063 If multiple entries match a file, the last matching one is used. */
1065 static struct compiler *compilers;
1067 /* Number of entries in `compilers', not counting the null terminator. */
1069 static int n_compilers;
1071 /* The default list of file name suffixes and their compilation specs. */
1073 static const struct compiler default_compilers[] =
1075 /* Add lists of suffixes of known languages here. If those languages
1076 were not present when we built the driver, we will hit these copies
1077 and be given a more meaningful error than "file not used since
1078 linking is not done". */
1079 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
1080 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
1081 {".mii", "#Objective-C++", 0, 0, 0},
1082 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
1083 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
1084 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
1085 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
1086 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
1087 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
1088 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
1089 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
1090 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
1091 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
1092 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
1093 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
1094 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
1095 {".r", "#Ratfor", 0, 0, 0},
1096 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
1097 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
1098 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
1099 {".go", "#Go", 0, 1, 0},
1100 /* Next come the entries for C. */
1101 {".c", "@c", 0, 0, 1},
1103 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1104 external preprocessor if -save-temps is given. */
1105 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1108 %eGNU C no longer supports -traditional without -E}\
1109 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1110 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1111 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1113 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1114 cc1 %(cpp_unique_options) %(cc1_options)}}}\
1115 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
1117 "%{!E:%e-E or -x required when input is from standard input}\
1118 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
1119 {".h", "@c-header", 0, 0, 0},
1121 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1122 external preprocessor if -save-temps is given. */
1123 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1125 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1126 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1127 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1129 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
1130 %W{o*:--output-pch=%*}}%V}\
1131 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1132 cc1 %(cpp_unique_options) %(cc1_options)\
1133 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
1134 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
1135 {".i", "@cpp-output", 0, 0, 0},
1137 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
1138 {".s", "@assembler", 0, 0, 0},
1140 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
1141 {".sx", "@assembler-with-cpp", 0, 0, 0},
1142 {".S", "@assembler-with-cpp", 0, 0, 0},
1143 {"@assembler-with-cpp",
1144 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
1145 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1146 %{E|M|MM:%(cpp_debug_options)}\
1147 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1148 as %(asm_debug) %(asm_options) %|.s %A }}}}"
1150 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1151 %{E|M|MM:%(cpp_debug_options)}\
1152 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1153 as %(asm_debug) %(asm_options) %m.s %A }}}}"
1158 /* Mark end of table. */
1162 /* Number of elements in default_compilers, not counting the terminator. */
1164 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
1166 typedef char *char_p; /* For DEF_VEC_P. */
1168 /* A vector of options to give to the linker.
1169 These options are accumulated by %x,
1170 and substituted into the linker command with %X. */
1171 static vec<char_p> linker_options;
1173 /* A vector of options to give to the assembler.
1174 These options are accumulated by -Wa,
1175 and substituted into the assembler command with %Y. */
1176 static vec<char_p> assembler_options;
1178 /* A vector of options to give to the preprocessor.
1179 These options are accumulated by -Wp,
1180 and substituted into the preprocessor command with %Z. */
1181 static vec<char_p> preprocessor_options;
1184 skip_whitespace (char *p)
1188 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1189 be considered whitespace. */
1190 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1192 else if (*p == '\n' || *p == ' ' || *p == '\t')
1206 /* Structures to keep track of prefixes to try when looking for files. */
1210 const char *prefix; /* String to prepend to the path. */
1211 struct prefix_list *next; /* Next in linked list. */
1212 int require_machine_suffix; /* Don't use without machine_suffix. */
1213 /* 2 means try both machine_suffix and just_machine_suffix. */
1214 int priority; /* Sort key - priority within list. */
1215 int os_multilib; /* 1 if OS multilib scheme should be used,
1216 0 for GCC multilib scheme. */
1221 struct prefix_list *plist; /* List of prefixes to try */
1222 int max_len; /* Max length of a prefix in PLIST */
1223 const char *name; /* Name of this list (used in config stuff) */
1226 /* List of prefixes to try when looking for executables. */
1228 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1230 /* List of prefixes to try when looking for startup (crt0) files. */
1232 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1234 /* List of prefixes to try when looking for include files. */
1236 static struct path_prefix include_prefixes = { 0, 0, "include" };
1238 /* Suffix to attach to directories searched for commands.
1239 This looks like `MACHINE/VERSION/'. */
1241 static const char *machine_suffix = 0;
1243 /* Suffix to attach to directories searched for commands.
1244 This is just `MACHINE/'. */
1246 static const char *just_machine_suffix = 0;
1248 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1250 static const char *gcc_exec_prefix;
1252 /* Adjusted value of standard_libexec_prefix. */
1254 static const char *gcc_libexec_prefix;
1256 /* Default prefixes to attach to command names. */
1258 #ifndef STANDARD_STARTFILE_PREFIX_1
1259 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1261 #ifndef STANDARD_STARTFILE_PREFIX_2
1262 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1265 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1266 #undef MD_EXEC_PREFIX
1267 #undef MD_STARTFILE_PREFIX
1268 #undef MD_STARTFILE_PREFIX_1
1271 /* If no prefixes defined, use the null string, which will disable them. */
1272 #ifndef MD_EXEC_PREFIX
1273 #define MD_EXEC_PREFIX ""
1275 #ifndef MD_STARTFILE_PREFIX
1276 #define MD_STARTFILE_PREFIX ""
1278 #ifndef MD_STARTFILE_PREFIX_1
1279 #define MD_STARTFILE_PREFIX_1 ""
1282 /* These directories are locations set at configure-time based on the
1283 --prefix option provided to configure. Their initializers are
1284 defined in Makefile.in. These paths are not *directly* used when
1285 gcc_exec_prefix is set because, in that case, we know where the
1286 compiler has been installed, and use paths relative to that
1287 location instead. */
1288 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1289 static const char *const standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1290 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1291 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1293 /* For native compilers, these are well-known paths containing
1294 components that may be provided by the system. For cross
1295 compilers, these paths are not used. */
1296 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1297 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1298 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1299 static const char *const standard_startfile_prefix_1
1300 = STANDARD_STARTFILE_PREFIX_1;
1301 static const char *const standard_startfile_prefix_2
1302 = STANDARD_STARTFILE_PREFIX_2;
1304 /* A relative path to be used in finding the location of tools
1305 relative to the driver. */
1306 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1308 /* A prefix to be used when this is an accelerator compiler. */
1309 static const char *const accel_dir_suffix = ACCEL_DIR_SUFFIX;
1311 /* Subdirectory to use for locating libraries. Set by
1312 set_multilib_dir based on the compilation options. */
1314 static const char *multilib_dir;
1316 /* Subdirectory to use for locating libraries in OS conventions. Set by
1317 set_multilib_dir based on the compilation options. */
1319 static const char *multilib_os_dir;
1321 /* Subdirectory to use for locating libraries in multiarch conventions. Set by
1322 set_multilib_dir based on the compilation options. */
1324 static const char *multiarch_dir;
1326 /* Structure to keep track of the specs that have been defined so far.
1327 These are accessed using %(specname) in a compiler or link
1332 /* The following 2 fields must be first */
1333 /* to allow EXTRA_SPECS to be initialized */
1334 const char *name; /* name of the spec. */
1335 const char *ptr; /* available ptr if no static pointer */
1337 /* The following fields are not initialized */
1338 /* by EXTRA_SPECS */
1339 const char **ptr_spec; /* pointer to the spec itself. */
1340 struct spec_list *next; /* Next spec in linked list. */
1341 int name_len; /* length of the name */
1342 bool user_p; /* whether string come from file spec. */
1343 bool alloc_p; /* whether string was allocated */
1346 #define INIT_STATIC_SPEC(NAME,PTR) \
1347 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, false, false }
1349 /* List of statically defined specs. */
1350 static struct spec_list static_specs[] =
1352 INIT_STATIC_SPEC ("asm", &asm_spec),
1353 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1354 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1355 INIT_STATIC_SPEC ("asm_options", &asm_options),
1356 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1357 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1358 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1359 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1360 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1361 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1362 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1363 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1364 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1365 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1366 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec),
1367 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1368 INIT_STATIC_SPEC ("link", &link_spec),
1369 INIT_STATIC_SPEC ("lib", &lib_spec),
1370 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec),
1371 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1372 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1373 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1374 INIT_STATIC_SPEC ("version", &compiler_version),
1375 INIT_STATIC_SPEC ("multilib", &multilib_select),
1376 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1377 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1378 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1379 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1380 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1381 INIT_STATIC_SPEC ("multilib_reuse", &multilib_reuse),
1382 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1383 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec),
1384 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec),
1385 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec),
1386 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1387 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1388 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1389 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1390 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1391 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec),
1392 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1393 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1394 INIT_STATIC_SPEC ("self_spec", &self_spec),
1397 #ifdef EXTRA_SPECS /* additional specs needed */
1398 /* Structure to keep track of just the first two args of a spec_list.
1399 That is all that the EXTRA_SPECS macro gives us. */
1402 const char *const name;
1403 const char *const ptr;
1406 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1407 static struct spec_list *extra_specs = (struct spec_list *) 0;
1410 /* List of dynamically allocates specs that have been defined so far. */
1412 static struct spec_list *specs = (struct spec_list *) 0;
1414 /* List of static spec functions. */
1416 static const struct spec_function static_spec_functions[] =
1418 { "getenv", getenv_spec_function },
1419 { "if-exists", if_exists_spec_function },
1420 { "if-exists-else", if_exists_else_spec_function },
1421 { "sanitize", sanitize_spec_function },
1422 { "replace-outfile", replace_outfile_spec_function },
1423 { "remove-outfile", remove_outfile_spec_function },
1424 { "version-compare", version_compare_spec_function },
1425 { "include", include_spec_function },
1426 { "find-file", find_file_spec_function },
1427 { "find-plugindir", find_plugindir_spec_function },
1428 { "print-asm-header", print_asm_header_spec_function },
1429 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function },
1430 { "compare-debug-self-opt", compare_debug_self_opt_spec_function },
1431 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function },
1432 { "pass-through-libs", pass_through_libs_spec_func },
1433 { "replace-extension", replace_extension_spec_func },
1434 #ifdef EXTRA_SPEC_FUNCTIONS
1435 EXTRA_SPEC_FUNCTIONS
1440 static int processing_spec_function;
1442 /* Add appropriate libgcc specs to OBSTACK, taking into account
1443 various permutations of -shared-libgcc, -shared, and such. */
1445 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1447 #ifndef USE_LD_AS_NEEDED
1448 #define USE_LD_AS_NEEDED 0
1452 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1453 const char *static_name, const char *eh_name)
1457 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}"
1458 "%{!static:%{!static-libgcc:"
1459 #if USE_LD_AS_NEEDED
1460 "%{!shared-libgcc:",
1461 static_name, " " LD_AS_NEEDED_OPTION " ",
1462 shared_name, " " LD_NO_AS_NEEDED_OPTION
1465 shared_name, "%{!shared: ", static_name, "}"
1469 "%{!shared-libgcc:", static_name, " ", eh_name, "}"
1470 "%{shared-libgcc:", shared_name, " ", static_name, "}"
1474 "%{shared-libgcc:", shared_name, "}"
1475 "%{!shared-libgcc:", static_name, "}"
1478 "%{shared:", shared_name, "}"
1483 obstack_grow (obstack, buf, strlen (buf));
1486 #endif /* ENABLE_SHARED_LIBGCC */
1488 /* Initialize the specs lookup routines. */
1493 struct spec_list *next = (struct spec_list *) 0;
1494 struct spec_list *sl = (struct spec_list *) 0;
1498 return; /* Already initialized. */
1501 fnotice (stderr, "Using built-in specs.\n");
1504 extra_specs = XCNEWVEC (struct spec_list, ARRAY_SIZE (extra_specs_1));
1506 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1508 sl = &extra_specs[i];
1509 sl->name = extra_specs_1[i].name;
1510 sl->ptr = extra_specs_1[i].ptr;
1512 sl->name_len = strlen (sl->name);
1513 sl->ptr_spec = &sl->ptr;
1518 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1520 sl = &static_specs[i];
1525 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1526 /* ??? If neither -shared-libgcc nor --static-libgcc was
1527 seen, then we should be making an educated guess. Some proposed
1528 heuristics for ELF include:
1530 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1531 program will be doing dynamic loading, which will likely
1532 need the shared libgcc.
1534 (2) If "-ldl", then it's also a fair bet that we're doing
1537 (3) For each ET_DYN we're linking against (either through -lfoo
1538 or /some/path/foo.so), check to see whether it or one of
1539 its dependencies depends on a shared libgcc.
1543 If the runtime is fixed to look for program headers instead
1544 of calling __register_frame_info at all, for each object,
1545 use the shared libgcc if any EH symbol referenced.
1547 If crtstuff is fixed to not invoke __register_frame_info
1548 automatically, for each object, use the shared libgcc if
1549 any non-empty unwind section found.
1551 Doing any of this probably requires invoking an external program to
1552 do the actual object file scanning. */
1554 const char *p = libgcc_spec;
1557 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1558 when given the proper command line arguments. */
1561 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1563 init_gcc_specs (&obstack,
1565 #ifdef USE_LIBUNWIND_EXCEPTIONS
1571 #ifdef USE_LIBUNWIND_EXCEPTIONS
1572 # ifdef HAVE_LD_STATIC_DYNAMIC
1573 " %{!static:" LD_STATIC_OPTION "} -lunwind"
1574 " %{!static:" LD_DYNAMIC_OPTION "}"
1584 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1586 /* Ug. We don't know shared library extensions. Hope that
1587 systems that use this form don't do shared libraries. */
1588 init_gcc_specs (&obstack,
1592 #ifdef USE_LIBUNWIND_EXCEPTIONS
1601 obstack_1grow (&obstack, *p);
1602 in_sep = (*p == ' ');
1607 obstack_1grow (&obstack, '\0');
1608 libgcc_spec = XOBFINISH (&obstack, const char *);
1611 #ifdef USE_AS_TRADITIONAL_FORMAT
1612 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1614 static const char tf[] = "--traditional-format ";
1615 obstack_grow (&obstack, tf, sizeof (tf) - 1);
1616 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1617 asm_spec = XOBFINISH (&obstack, const char *);
1621 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \
1622 defined LINKER_HASH_STYLE
1623 # ifdef LINK_BUILDID_SPEC
1624 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1625 obstack_grow (&obstack, LINK_BUILDID_SPEC, sizeof (LINK_BUILDID_SPEC) - 1);
1627 # ifdef LINK_EH_SPEC
1628 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1629 obstack_grow (&obstack, LINK_EH_SPEC, sizeof (LINK_EH_SPEC) - 1);
1631 # ifdef LINKER_HASH_STYLE
1632 /* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had
1635 static const char hash_style[] = "--hash-style=";
1636 obstack_grow (&obstack, hash_style, sizeof (hash_style) - 1);
1637 obstack_grow (&obstack, LINKER_HASH_STYLE, sizeof (LINKER_HASH_STYLE) - 1);
1638 obstack_1grow (&obstack, ' ');
1641 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1642 link_spec = XOBFINISH (&obstack, const char *);
1648 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1649 removed; If the spec starts with a + then SPEC is added to the end of the
1653 set_spec (const char *name, const char *spec, bool user_p)
1655 struct spec_list *sl;
1656 const char *old_spec;
1657 int name_len = strlen (name);
1660 /* If this is the first call, initialize the statically allocated specs. */
1663 struct spec_list *next = (struct spec_list *) 0;
1664 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1666 sl = &static_specs[i];
1673 /* See if the spec already exists. */
1674 for (sl = specs; sl; sl = sl->next)
1675 if (name_len == sl->name_len && !strcmp (sl->name, name))
1680 /* Not found - make it. */
1681 sl = XNEW (struct spec_list);
1682 sl->name = xstrdup (name);
1683 sl->name_len = name_len;
1684 sl->ptr_spec = &sl->ptr;
1686 *(sl->ptr_spec) = "";
1691 old_spec = *(sl->ptr_spec);
1692 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1693 ? concat (old_spec, spec + 1, NULL)
1698 fnotice (stderr, "Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1701 /* Free the old spec. */
1702 if (old_spec && sl->alloc_p)
1703 free (CONST_CAST (char *, old_spec));
1705 sl->user_p = user_p;
1709 /* Accumulate a command (program name and args), and run it. */
1711 typedef const char *const_char_p; /* For DEF_VEC_P. */
1713 /* Vector of pointers to arguments in the current line of specifications. */
1715 static vec<const_char_p> argbuf;
1717 /* Were the options -c, -S or -E passed. */
1718 static int have_c = 0;
1720 /* Was the option -o passed. */
1721 static int have_o = 0;
1723 /* Pointer to output file name passed in with -o. */
1724 static const char *output_file = 0;
1726 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1727 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1730 static struct temp_name {
1731 const char *suffix; /* suffix associated with the code. */
1732 int length; /* strlen (suffix). */
1733 int unique; /* Indicates whether %g or %u/%U was used. */
1734 const char *filename; /* associated filename. */
1735 int filename_length; /* strlen (filename). */
1736 struct temp_name *next;
1739 /* Number of commands executed so far. */
1741 static int execution_count;
1743 /* Number of commands that exited with a signal. */
1745 static int signal_count;
1747 /* Allocate the argument vector. */
1755 /* Clear out the vector of arguments (after a command is executed). */
1760 argbuf.truncate (0);
1763 /* Add one argument to the vector at the end.
1764 This is done when a space is seen or at the end of the line.
1765 If DELETE_ALWAYS is nonzero, the arg is a filename
1766 and the file should be deleted eventually.
1767 If DELETE_FAILURE is nonzero, the arg is a filename
1768 and the file should be deleted if this compilation fails. */
1771 store_arg (const char *arg, int delete_always, int delete_failure)
1773 argbuf.safe_push (arg);
1775 if (delete_always || delete_failure)
1778 /* If the temporary file we should delete is specified as
1779 part of a joined argument extract the filename. */
1781 && (p = strrchr (arg, '=')))
1783 record_temp_file (arg, delete_always, delete_failure);
1787 /* Load specs from a file name named FILENAME, replacing occurrences of
1788 various different types of line-endings, \r\n, \n\r and just \r, with
1792 load_specs (const char *filename)
1796 struct stat statbuf;
1803 fnotice (stderr, "Reading specs from %s\n", filename);
1805 /* Open and stat the file. */
1806 desc = open (filename, O_RDONLY, 0);
1808 pfatal_with_name (filename);
1809 if (stat (filename, &statbuf) < 0)
1810 pfatal_with_name (filename);
1812 /* Read contents of file into BUFFER. */
1813 buffer = XNEWVEC (char, statbuf.st_size + 1);
1814 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1816 pfatal_with_name (filename);
1817 buffer[readlen] = 0;
1820 specs = XNEWVEC (char, readlen + 1);
1822 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1828 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1830 else if (*(buffer_p + 1) == '\n') /* \r\n */
1844 /* Read compilation specs from a file named FILENAME,
1845 replacing the default ones.
1847 A suffix which starts with `*' is a definition for
1848 one of the machine-specific sub-specs. The "suffix" should be
1849 *asm, *cc1, *cpp, *link, *startfile, etc.
1850 The corresponding spec is stored in asm_spec, etc.,
1851 rather than in the `compilers' vector.
1853 Anything invalid in the file is a fatal error. */
1856 read_specs (const char *filename, bool main_p, bool user_p)
1861 buffer = load_specs (filename);
1863 /* Scan BUFFER for specs, putting them in the vector. */
1869 char *in, *out, *p1, *p2, *p3;
1871 /* Advance P in BUFFER to the next nonblank nocomment line. */
1872 p = skip_whitespace (p);
1876 /* Is this a special command that starts with '%'? */
1877 /* Don't allow this for the main specs file, since it would
1878 encourage people to overwrite it. */
1879 if (*p == '%' && !main_p)
1882 while (*p && *p != '\n')
1888 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1889 && (p1[sizeof "%include" - 1] == ' '
1890 || p1[sizeof "%include" - 1] == '\t'))
1894 p1 += sizeof ("%include");
1895 while (*p1 == ' ' || *p1 == '\t')
1898 if (*p1++ != '<' || p[-2] != '>')
1899 fatal_error (input_location,
1900 "specs %%include syntax malformed after "
1902 (long) (p1 - buffer + 1));
1905 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1906 read_specs (new_filename ? new_filename : p1, false, user_p);
1909 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1910 && (p1[sizeof "%include_noerr" - 1] == ' '
1911 || p1[sizeof "%include_noerr" - 1] == '\t'))
1915 p1 += sizeof "%include_noerr";
1916 while (*p1 == ' ' || *p1 == '\t')
1919 if (*p1++ != '<' || p[-2] != '>')
1920 fatal_error (input_location,
1921 "specs %%include syntax malformed after "
1923 (long) (p1 - buffer + 1));
1926 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1928 read_specs (new_filename, false, user_p);
1929 else if (verbose_flag)
1930 fnotice (stderr, "could not find specs file %s\n", p1);
1933 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1934 && (p1[sizeof "%rename" - 1] == ' '
1935 || p1[sizeof "%rename" - 1] == '\t'))
1938 struct spec_list *sl;
1939 struct spec_list *newsl;
1941 /* Get original name. */
1942 p1 += sizeof "%rename";
1943 while (*p1 == ' ' || *p1 == '\t')
1946 if (! ISALPHA ((unsigned char) *p1))
1947 fatal_error (input_location,
1948 "specs %%rename syntax malformed after "
1950 (long) (p1 - buffer));
1953 while (*p2 && !ISSPACE ((unsigned char) *p2))
1956 if (*p2 != ' ' && *p2 != '\t')
1957 fatal_error (input_location,
1958 "specs %%rename syntax malformed after "
1960 (long) (p2 - buffer));
1964 while (*p2 == ' ' || *p2 == '\t')
1967 if (! ISALPHA ((unsigned char) *p2))
1968 fatal_error (input_location,
1969 "specs %%rename syntax malformed after "
1971 (long) (p2 - buffer));
1973 /* Get new spec name. */
1975 while (*p3 && !ISSPACE ((unsigned char) *p3))
1979 fatal_error (input_location,
1980 "specs %%rename syntax malformed after "
1982 (long) (p3 - buffer));
1985 for (sl = specs; sl; sl = sl->next)
1986 if (name_len == sl->name_len && !strcmp (sl->name, p1))
1990 fatal_error (input_location,
1991 "specs %s spec was not found to be renamed", p1);
1993 if (strcmp (p1, p2) == 0)
1996 for (newsl = specs; newsl; newsl = newsl->next)
1997 if (strcmp (newsl->name, p2) == 0)
1998 fatal_error (input_location,
1999 "%s: attempt to rename spec %qs to "
2000 "already defined spec %qs",
2005 fnotice (stderr, "rename spec %s to %s\n", p1, p2);
2007 fnotice (stderr, "spec is '%s'\n\n", *(sl->ptr_spec));
2011 set_spec (p2, *(sl->ptr_spec), user_p);
2013 free (CONST_CAST (char *, *(sl->ptr_spec)));
2015 *(sl->ptr_spec) = "";
2020 fatal_error (input_location,
2021 "specs unknown %% command after %ld characters",
2022 (long) (p1 - buffer));
2025 /* Find the colon that should end the suffix. */
2027 while (*p1 && *p1 != ':' && *p1 != '\n')
2030 /* The colon shouldn't be missing. */
2032 fatal_error (input_location,
2033 "specs file malformed after %ld characters",
2034 (long) (p1 - buffer));
2036 /* Skip back over trailing whitespace. */
2038 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
2041 /* Copy the suffix to a string. */
2042 suffix = save_string (p, p2 - p);
2043 /* Find the next line. */
2044 p = skip_whitespace (p1 + 1);
2046 fatal_error (input_location,
2047 "specs file malformed after %ld characters",
2048 (long) (p - buffer));
2051 /* Find next blank line or end of string. */
2052 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
2055 /* Specs end at the blank line and do not include the newline. */
2056 spec = save_string (p, p1 - p);
2059 /* Delete backslash-newline sequences from the spec. */
2064 if (in[0] == '\\' && in[1] == '\n')
2066 else if (in[0] == '#')
2067 while (*in && *in != '\n')
2075 if (suffix[0] == '*')
2077 if (! strcmp (suffix, "*link_command"))
2078 link_command_spec = spec;
2080 set_spec (suffix + 1, spec, user_p);
2084 /* Add this pair to the vector. */
2086 = XRESIZEVEC (struct compiler, compilers, n_compilers + 2);
2088 compilers[n_compilers].suffix = suffix;
2089 compilers[n_compilers].spec = spec;
2091 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2095 link_command_spec = spec;
2098 if (link_command_spec == 0)
2099 fatal_error (input_location, "spec file has no spec for linking");
2102 /* Record the names of temporary files we tell compilers to write,
2103 and delete them at the end of the run. */
2105 /* This is the common prefix we use to make temp file names.
2106 It is chosen once for each run of this program.
2107 It is substituted into a spec by %g or %j.
2108 Thus, all temp file names contain this prefix.
2109 In practice, all temp file names start with this prefix.
2111 This prefix comes from the envvar TMPDIR if it is defined;
2112 otherwise, from the P_tmpdir macro if that is defined;
2113 otherwise, in /usr/tmp or /tmp;
2114 or finally the current directory if all else fails. */
2116 static const char *temp_filename;
2118 /* Length of the prefix. */
2120 static int temp_filename_length;
2122 /* Define the list of temporary files to delete. */
2127 struct temp_file *next;
2130 /* Queue of files to delete on success or failure of compilation. */
2131 static struct temp_file *always_delete_queue;
2132 /* Queue of files to delete on failure of compilation. */
2133 static struct temp_file *failure_delete_queue;
2135 /* Record FILENAME as a file to be deleted automatically.
2136 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2137 otherwise delete it in any case.
2138 FAIL_DELETE nonzero means delete it if a compilation step fails;
2139 otherwise delete it in any case. */
2142 record_temp_file (const char *filename, int always_delete, int fail_delete)
2144 char *const name = xstrdup (filename);
2148 struct temp_file *temp;
2149 for (temp = always_delete_queue; temp; temp = temp->next)
2150 if (! filename_cmp (name, temp->name))
2153 temp = XNEW (struct temp_file);
2154 temp->next = always_delete_queue;
2156 always_delete_queue = temp;
2163 struct temp_file *temp;
2164 for (temp = failure_delete_queue; temp; temp = temp->next)
2165 if (! filename_cmp (name, temp->name))
2171 temp = XNEW (struct temp_file);
2172 temp->next = failure_delete_queue;
2174 failure_delete_queue = temp;
2180 /* Delete all the temporary files whose names we previously recorded. */
2182 #ifndef DELETE_IF_ORDINARY
2183 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2186 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2187 if (unlink (NAME) < 0) \
2189 perror_with_name (NAME); \
2194 delete_if_ordinary (const char *name)
2200 printf ("Delete %s? (y or n) ", name);
2204 while ((c = getchar ()) != '\n' && c != EOF)
2207 if (i == 'y' || i == 'Y')
2209 DELETE_IF_ORDINARY (name, st, verbose_flag);
2213 delete_temp_files (void)
2215 struct temp_file *temp;
2217 for (temp = always_delete_queue; temp; temp = temp->next)
2218 delete_if_ordinary (temp->name);
2219 always_delete_queue = 0;
2222 /* Delete all the files to be deleted on error. */
2225 delete_failure_queue (void)
2227 struct temp_file *temp;
2229 for (temp = failure_delete_queue; temp; temp = temp->next)
2230 delete_if_ordinary (temp->name);
2234 clear_failure_queue (void)
2236 failure_delete_queue = 0;
2239 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2241 If DO_MULTI is true iterate over the paths twice, first with multilib
2242 suffix then without, otherwise iterate over the paths once without
2243 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2244 to avoid visiting the same path twice, but we could do better. For
2245 instance, /usr/lib/../lib is considered different from /usr/lib.
2246 At least EXTRA_SPACE chars past the end of the path passed to
2247 CALLBACK are available for use by the callback.
2248 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2250 Returns the value returned by CALLBACK. */
2253 for_each_path (const struct path_prefix *paths,
2256 void *(*callback) (char *, void *),
2257 void *callback_info)
2259 struct prefix_list *pl;
2260 const char *multi_dir = NULL;
2261 const char *multi_os_dir = NULL;
2262 const char *multiarch_suffix = NULL;
2263 const char *multi_suffix;
2264 const char *just_multi_suffix;
2267 bool skip_multi_dir = false;
2268 bool skip_multi_os_dir = false;
2270 multi_suffix = machine_suffix;
2271 just_multi_suffix = just_machine_suffix;
2272 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0)
2274 multi_dir = concat (multilib_dir, dir_separator_str, NULL);
2275 multi_suffix = concat (multi_suffix, multi_dir, NULL);
2276 just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL);
2278 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0)
2279 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL);
2281 multiarch_suffix = concat (multiarch_dir, dir_separator_str, NULL);
2285 size_t multi_dir_len = 0;
2286 size_t multi_os_dir_len = 0;
2287 size_t multiarch_len = 0;
2289 size_t just_suffix_len;
2293 multi_dir_len = strlen (multi_dir);
2295 multi_os_dir_len = strlen (multi_os_dir);
2296 if (multiarch_suffix)
2297 multiarch_len = strlen (multiarch_suffix);
2298 suffix_len = strlen (multi_suffix);
2299 just_suffix_len = strlen (just_multi_suffix);
2303 len = paths->max_len + extra_space + 1;
2304 len += MAX (MAX (suffix_len, multi_os_dir_len), multiarch_len);
2305 path = XNEWVEC (char, len);
2308 for (pl = paths->plist; pl != 0; pl = pl->next)
2310 len = strlen (pl->prefix);
2311 memcpy (path, pl->prefix, len);
2313 #if 0 /* MACHINE/VERSION isn't used anywhere DragonFly */
2314 /* Look first in MACHINE/VERSION subdirectory. */
2315 if (!skip_multi_dir)
2317 memcpy (path + len, multi_suffix, suffix_len + 1);
2318 ret = callback (path, callback_info);
2324 /* Some paths are tried with just the machine (ie. target)
2325 subdir. This is used for finding as, ld, etc. */
2327 && pl->require_machine_suffix == 2)
2329 memcpy (path + len, just_multi_suffix, just_suffix_len + 1);
2330 ret = callback (path, callback_info);
2335 /* Now try the multiarch path. */
2337 && !pl->require_machine_suffix && multiarch_dir)
2339 memcpy (path + len, multiarch_suffix, multiarch_len + 1);
2340 ret = callback (path, callback_info);
2345 /* Now try the base path. */
2346 if (!pl->require_machine_suffix
2347 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir))
2349 const char *this_multi;
2350 size_t this_multi_len;
2352 if (pl->os_multilib)
2354 this_multi = multi_os_dir;
2355 this_multi_len = multi_os_dir_len;
2359 this_multi = multi_dir;
2360 this_multi_len = multi_dir_len;
2364 memcpy (path + len, this_multi, this_multi_len + 1);
2368 ret = callback (path, callback_info);
2376 if (multi_dir == NULL && multi_os_dir == NULL)
2379 /* Run through the paths again, this time without multilibs.
2380 Don't repeat any we have already seen. */
2383 free (CONST_CAST (char *, multi_dir));
2385 free (CONST_CAST (char *, multi_suffix));
2386 multi_suffix = machine_suffix;
2387 free (CONST_CAST (char *, just_multi_suffix));
2388 just_multi_suffix = just_machine_suffix;
2391 skip_multi_dir = true;
2394 free (CONST_CAST (char *, multi_os_dir));
2395 multi_os_dir = NULL;
2398 skip_multi_os_dir = true;
2403 free (CONST_CAST (char *, multi_dir));
2404 free (CONST_CAST (char *, multi_suffix));
2405 free (CONST_CAST (char *, just_multi_suffix));
2408 free (CONST_CAST (char *, multi_os_dir));
2414 /* Callback for build_search_list. Adds path to obstack being built. */
2416 struct add_to_obstack_info {
2423 add_to_obstack (char *path, void *data)
2425 struct add_to_obstack_info *info = (struct add_to_obstack_info *) data;
2427 if (info->check_dir && !is_directory (path, false))
2430 if (!info->first_time)
2431 obstack_1grow (info->ob, PATH_SEPARATOR);
2433 obstack_grow (info->ob, path, strlen (path));
2435 info->first_time = false;
2439 /* Add or change the value of an environment variable, outputting the
2440 change to standard error if in verbose mode. */
2442 xputenv (const char *string)
2445 fnotice (stderr, "%s\n", string);
2446 putenv (CONST_CAST (char *, string));
2449 /* Build a list of search directories from PATHS.
2450 PREFIX is a string to prepend to the list.
2451 If CHECK_DIR_P is true we ensure the directory exists.
2452 If DO_MULTI is true, multilib paths are output first, then
2454 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2455 It is also used by the --print-search-dirs flag. */
2458 build_search_list (const struct path_prefix *paths, const char *prefix,
2459 bool check_dir, bool do_multi)
2461 struct add_to_obstack_info info;
2463 info.ob = &collect_obstack;
2464 info.check_dir = check_dir;
2465 info.first_time = true;
2467 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2468 obstack_1grow (&collect_obstack, '=');
2470 for_each_path (paths, do_multi, 0, add_to_obstack, &info);
2472 obstack_1grow (&collect_obstack, '\0');
2473 return XOBFINISH (&collect_obstack, char *);
2476 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2480 putenv_from_prefixes (const struct path_prefix *paths, const char *env_var,
2483 xputenv (build_search_list (paths, env_var, true, do_multi));
2486 /* Check whether NAME can be accessed in MODE. This is like access,
2487 except that it never considers directories to be executable. */
2490 access_check (const char *name, int mode)
2496 if (stat (name, &st) < 0
2497 || S_ISDIR (st.st_mode))
2501 return access (name, mode);
2504 /* Callback for find_a_file. Appends the file name to the directory
2505 path. If the resulting file exists in the right mode, return the
2506 full pathname to the file. */
2508 struct file_at_path_info {
2517 file_at_path (char *path, void *data)
2519 struct file_at_path_info *info = (struct file_at_path_info *) data;
2520 size_t len = strlen (path);
2522 memcpy (path + len, info->name, info->name_len);
2523 len += info->name_len;
2525 /* Some systems have a suffix for executable files.
2526 So try appending that first. */
2527 if (info->suffix_len)
2529 memcpy (path + len, info->suffix, info->suffix_len + 1);
2530 if (access_check (path, info->mode) == 0)
2535 if (access_check (path, info->mode) == 0)
2541 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2542 access to check permissions. If DO_MULTI is true, search multilib
2543 paths then non-multilib paths, otherwise do not search multilib paths.
2544 Return 0 if not found, otherwise return its name, allocated with malloc. */
2547 find_a_file (const struct path_prefix *pprefix, const char *name, int mode,
2550 struct file_at_path_info info;
2552 #ifdef DEFAULT_ASSEMBLER
2553 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2554 return xstrdup (DEFAULT_ASSEMBLER);
2557 #ifdef DEFAULT_LINKER
2558 if (! strcmp (name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2559 return xstrdup (DEFAULT_LINKER);
2562 /* Determine the filename to execute (special case for absolute paths). */
2564 if (IS_ABSOLUTE_PATH (name))
2566 if (access (name, mode) == 0)
2567 return xstrdup (name);
2573 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "";
2574 info.name_len = strlen (info.name);
2575 info.suffix_len = strlen (info.suffix);
2578 return (char*) for_each_path (pprefix, do_multi,
2579 info.name_len + info.suffix_len,
2580 file_at_path, &info);
2583 /* Ranking of prefixes in the sort list. -B prefixes are put before
2586 enum path_prefix_priority
2588 PREFIX_PRIORITY_B_OPT,
2589 PREFIX_PRIORITY_LAST
2592 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2593 order according to PRIORITY. Within each PRIORITY, new entries are
2596 If WARN is nonzero, we will warn if no file is found
2597 through this prefix. WARN should point to an int
2598 which will be set to 1 if this entry is used.
2600 COMPONENT is the value to be passed to update_path.
2602 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2603 the complete value of machine_suffix.
2604 2 means try both machine_suffix and just_machine_suffix. */
2607 add_prefix (struct path_prefix *pprefix, const char *prefix,
2608 const char *component, /* enum prefix_priority */ int priority,
2609 int require_machine_suffix, int os_multilib)
2611 struct prefix_list *pl, **prev;
2614 for (prev = &pprefix->plist;
2615 (*prev) != NULL && (*prev)->priority <= priority;
2616 prev = &(*prev)->next)
2619 /* Keep track of the longest prefix. */
2621 prefix = update_path (prefix, component);
2622 len = strlen (prefix);
2623 if (len > pprefix->max_len)
2624 pprefix->max_len = len;
2626 pl = XNEW (struct prefix_list);
2627 pl->prefix = prefix;
2628 pl->require_machine_suffix = require_machine_suffix;
2629 pl->priority = priority;
2630 pl->os_multilib = os_multilib;
2632 /* Insert after PREV. */
2637 /* Same as add_prefix, but prepending target_system_root to prefix. */
2638 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2640 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2641 const char *component,
2642 /* enum prefix_priority */ int priority,
2643 int require_machine_suffix, int os_multilib)
2645 if (!IS_ABSOLUTE_PATH (prefix))
2646 fatal_error (input_location, "system path %qs is not absolute", prefix);
2648 if (target_system_root)
2650 char *sysroot_no_trailing_dir_separator = xstrdup (target_system_root);
2651 size_t sysroot_len = strlen (target_system_root);
2654 && target_system_root[sysroot_len - 1] == DIR_SEPARATOR)
2655 sysroot_no_trailing_dir_separator[sysroot_len - 1] = '\0';
2657 if (target_sysroot_suffix)
2658 prefix = concat (sysroot_no_trailing_dir_separator,
2659 target_sysroot_suffix, prefix, NULL);
2661 prefix = concat (sysroot_no_trailing_dir_separator, prefix, NULL);
2663 free (sysroot_no_trailing_dir_separator);
2665 /* We have to override this because GCC's notion of sysroot
2666 moves along with GCC. */
2670 add_prefix (pprefix, prefix, component, priority,
2671 require_machine_suffix, os_multilib);
2674 /* Execute the command specified by the arguments on the current line of spec.
2675 When using pipes, this includes several piped-together commands
2676 with `|' between them.
2678 Return 0 if successful, -1 if failed. */
2684 int n_commands; /* # of command. */
2686 struct pex_obj *pex;
2689 const char *prog; /* program name. */
2690 const char **argv; /* vector of args. */
2694 struct command *commands; /* each command buffer with above info. */
2696 gcc_assert (!processing_spec_function);
2700 string = find_a_file (&exec_prefixes,
2701 argbuf[0], X_OK, false);
2704 insert_wrapper (wrapper_string);
2707 /* Count # of piped commands. */
2708 for (n_commands = 1, i = 0; argbuf.iterate (i, &arg); i++)
2709 if (strcmp (arg, "|") == 0)
2712 /* Get storage for each command. */
2713 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2715 /* Split argbuf into its separate piped processes,
2716 and record info about each one.
2717 Also search for the programs that are to be run. */
2719 argbuf.safe_push (0);
2721 commands[0].prog = argbuf[0]; /* first command. */
2722 commands[0].argv = argbuf.address ();
2724 if (!wrapper_string)
2726 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false);
2727 commands[0].argv[0] = (string) ? string : commands[0].argv[0];
2730 for (n_commands = 1, i = 0; argbuf.iterate (i, &arg); i++)
2731 if (arg && strcmp (arg, "|") == 0)
2732 { /* each command. */
2733 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2734 fatal_error (input_location, "-pipe not supported");
2736 argbuf[i] = 0; /* Termination of
2738 commands[n_commands].prog = argbuf[i + 1];
2739 commands[n_commands].argv
2740 = &(argbuf.address ())[i + 1];
2741 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2744 commands[n_commands].argv[0] = string;
2748 /* If -v, print what we are about to do, and maybe query. */
2752 /* For help listings, put a blank line between sub-processes. */
2753 if (print_help_list)
2754 fputc ('\n', stderr);
2756 /* Print each piped command as a separate line. */
2757 for (i = 0; i < n_commands; i++)
2759 const char *const *j;
2761 if (verbose_only_flag)
2763 for (j = commands[i].argv; *j; j++)
2766 for (p = *j; *p; ++p)
2767 if (!ISALNUM ((unsigned char) *p)
2768 && *p != '_' && *p != '/' && *p != '-' && *p != '.')
2772 fprintf (stderr, " \"");
2773 for (p = *j; *p; ++p)
2775 if (*p == '"' || *p == '\\' || *p == '$')
2776 fputc ('\\', stderr);
2779 fputc ('"', stderr);
2781 /* If it's empty, print "". */
2783 fprintf (stderr, " \"\"");
2785 fprintf (stderr, " %s", *j);
2789 for (j = commands[i].argv; *j; j++)
2790 /* If it's empty, print "". */
2792 fprintf (stderr, " \"\"");
2794 fprintf (stderr, " %s", *j);
2796 /* Print a pipe symbol after all but the last command. */
2797 if (i + 1 != n_commands)
2798 fprintf (stderr, " |");
2799 fprintf (stderr, "\n");
2802 if (verbose_only_flag != 0)
2804 /* verbose_only_flag should act as if the spec was
2805 executed, so increment execution_count before
2806 returning. This prevents spurious warnings about
2807 unused linker input files, etc. */
2812 fnotice (stderr, "\nGo ahead? (y or n) ");
2816 while (getchar () != '\n')
2819 if (i != 'y' && i != 'Y')
2824 #ifdef ENABLE_VALGRIND_CHECKING
2825 /* Run the each command through valgrind. To simplify prepending the
2826 path to valgrind and the option "-q" (for quiet operation unless
2827 something triggers), we allocate a separate argv array. */
2829 for (i = 0; i < n_commands; i++)
2835 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2838 argv = XALLOCAVEC (const char *, argc + 3);
2840 argv[0] = VALGRIND_PATH;
2842 for (j = 2; j < argc + 2; j++)
2843 argv[j] = commands[i].argv[j - 2];
2846 commands[i].argv = argv;
2847 commands[i].prog = argv[0];
2851 /* Run each piped subprocess. */
2853 pex = pex_init (PEX_USE_PIPES | ((report_times || report_times_to_file)
2854 ? PEX_RECORD_TIMES : 0),
2855 progname, temp_filename);
2857 fatal_error (input_location, "pex_init failed: %m");
2859 for (i = 0; i < n_commands; i++)
2863 const char *string = commands[i].argv[0];
2865 errmsg = pex_run (pex,
2866 ((i + 1 == n_commands ? PEX_LAST : 0)
2867 | (string == commands[i].prog ? PEX_SEARCH : 0)),
2868 string, CONST_CAST (char **, commands[i].argv),
2873 fatal_error (input_location, errmsg);
2877 pfatal_with_name (errmsg);
2881 if (i && string != commands[i].prog)
2882 free (CONST_CAST (char *, string));
2887 /* Wait for all the subprocesses to finish. */
2891 struct pex_time *times = NULL;
2894 statuses = (int *) alloca (n_commands * sizeof (int));
2895 if (!pex_get_status (pex, n_commands, statuses))
2896 fatal_error (input_location, "failed to get exit status: %m");
2898 if (report_times || report_times_to_file)
2900 times = (struct pex_time *) alloca (n_commands * sizeof (struct pex_time));
2901 if (!pex_get_times (pex, n_commands, times))
2902 fatal_error (input_location, "failed to get process times: %m");
2907 for (i = 0; i < n_commands; ++i)
2909 int status = statuses[i];
2911 if (WIFSIGNALED (status))
2914 /* SIGPIPE is a special case. It happens in -pipe mode
2915 when the compiler dies before the preprocessor is done,
2916 or the assembler dies before the compiler is done.
2917 There's generally been an error already, and this is
2918 just fallout. So don't generate another error unless
2919 we would otherwise have succeeded. */
2920 if (WTERMSIG (status) == SIGPIPE
2921 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2928 internal_error_no_backtrace ("%s (program %s)",
2929 strsignal (WTERMSIG (status)),
2932 else if (WIFEXITED (status)
2933 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2935 /* For ICEs in cc1, cc1obj, cc1plus see if it is
2936 reproducible or not. */
2939 && WEXITSTATUS (status) == ICE_EXIT_CODE
2941 && (p = strrchr (commands[0].argv[0], DIR_SEPARATOR))
2942 && ! strncmp (p + 1, "cc1", 3))
2943 try_generate_repro (commands[0].argv);
2944 if (WEXITSTATUS (status) > greatest_status)
2945 greatest_status = WEXITSTATUS (status);
2949 if (report_times || report_times_to_file)
2951 struct pex_time *pt = ×[i];
2954 ut = ((double) pt->user_seconds
2955 + (double) pt->user_microseconds / 1.0e6);
2956 st = ((double) pt->system_seconds
2957 + (double) pt->system_microseconds / 1.0e6);
2962 fnotice (stderr, "# %s %.2f %.2f\n",
2963 commands[i].prog, ut, st);
2965 if (report_times_to_file)
2968 const char *const *j;
2970 fprintf (report_times_to_file, "%g %g", ut, st);
2972 for (j = &commands[i].prog; *j; j = &commands[i].argv[++c])
2975 for (p = *j; *p; ++p)
2976 if (*p == '"' || *p == '\\' || *p == '$'
2982 fprintf (report_times_to_file, " \"");
2983 for (p = *j; *p; ++p)
2985 if (*p == '"' || *p == '\\' || *p == '$')
2986 fputc ('\\', report_times_to_file);
2987 fputc (*p, report_times_to_file);
2989 fputc ('"', report_times_to_file);
2992 fprintf (report_times_to_file, " %s", *j);
2995 fputc ('\n', report_times_to_file);
3001 if (commands[0].argv[0] != commands[0].prog)
3002 free (CONST_CAST (char *, commands[0].argv[0]));
3008 /* Find all the switches given to us
3009 and make a vector describing them.
3010 The elements of the vector are strings, one per switch given.
3011 If a switch uses following arguments, then the `part1' field
3012 is the switch itself and the `args' field
3013 is a null-terminated vector containing the following arguments.
3014 Bits in the `live_cond' field are:
3015 SWITCH_LIVE to indicate this switch is true in a conditional spec.
3016 SWITCH_FALSE to indicate this switch is overridden by a later switch.
3017 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
3018 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
3019 in all do_spec calls afterwards. Used for %<S from self specs.
3020 The `validated' field is nonzero if any spec has looked at this switch;
3021 if it remains zero at the end of the run, it must be meaningless. */
3023 #define SWITCH_LIVE (1 << 0)
3024 #define SWITCH_FALSE (1 << 1)
3025 #define SWITCH_IGNORE (1 << 2)
3026 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
3027 #define SWITCH_KEEP_FOR_GCC (1 << 4)
3033 unsigned int live_cond;
3039 static struct switchstr *switches;
3041 static int n_switches;
3043 static int n_switches_alloc;
3045 /* Set to zero if -fcompare-debug is disabled, positive if it's
3046 enabled and we're running the first compilation, negative if it's
3047 enabled and we're running the second compilation. For most of the
3048 time, it's in the range -1..1, but it can be temporarily set to 2
3049 or 3 to indicate that the -fcompare-debug flags didn't come from
3050 the command-line, but rather from the GCC_COMPARE_DEBUG environment
3051 variable, until a synthesized -fcompare-debug flag is added to the
3055 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
3056 int compare_debug_second;
3058 /* Set to the flags that should be passed to the second compilation in
3059 a -fcompare-debug compilation. */
3060 const char *compare_debug_opt;
3062 static struct switchstr *switches_debug_check[2];
3064 static int n_switches_debug_check[2];
3066 static int n_switches_alloc_debug_check[2];
3068 static char *debug_check_temp_file[2];
3070 /* Language is one of three things:
3072 1) The name of a real programming language.
3073 2) NULL, indicating that no one has figured out
3075 3) '*', indicating that the file should be passed
3080 const char *language;
3081 struct compiler *incompiler;
3086 /* Also a vector of input files specified. */
3088 static struct infile *infiles;
3092 static int n_infiles_alloc;
3094 /* True if multiple input files are being compiled to a single
3097 static bool combine_inputs;
3099 /* This counts the number of libraries added by lang_specific_driver, so that
3100 we can tell if there were any user supplied any files or libraries. */
3102 static int added_libraries;
3104 /* And a vector of corresponding output files is made up later. */
3106 const char **outfiles;
3108 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3110 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
3111 is true if we should look for an executable suffix. DO_OBJ
3112 is true if we should look for an object suffix. */
3115 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
3116 int do_obj ATTRIBUTE_UNUSED)
3118 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3126 len = strlen (name);
3128 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3129 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
3130 if (do_obj && len > 2
3131 && name[len - 2] == '.'
3132 && name[len - 1] == 'o')
3134 obstack_grow (&obstack, name, len - 2);
3135 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
3136 name = XOBFINISH (&obstack, const char *);
3140 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3141 /* If there is no filetype, make it the executable suffix (which includes
3142 the "."). But don't get confused if we have just "-o". */
3143 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
3146 for (i = len - 1; i >= 0; i--)
3147 if (IS_DIR_SEPARATOR (name[i]))
3150 for (i++; i < len; i++)
3154 obstack_grow (&obstack, name, len);
3155 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
3156 strlen (TARGET_EXECUTABLE_SUFFIX));
3157 name = XOBFINISH (&obstack, const char *);
3164 /* Display the command line switches accepted by gcc. */
3168 printf (_("Usage: %s [options] file...\n"), progname);
3169 fputs (_("Options:\n"), stdout);
3171 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
3172 fputs (_(" --help Display this information\n"), stdout);
3173 fputs (_(" --target-help Display target specific command line options\n"), stdout);
3174 fputs (_(" --help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumented}}[,...]\n"), stdout);
3175 fputs (_(" Display specific types of command line options\n"), stdout);
3177 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
3178 fputs (_(" --version Display compiler version information\n"), stdout);
3179 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
3180 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
3181 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
3182 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
3183 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
3184 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
3185 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
3187 -print-multiarch Display the target's normalized GNU triplet, used as\n\
3188 a component in the library path\n"), stdout);
3189 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
3191 -print-multi-lib Display the mapping between command line options and\n\
3192 multiple library search directories\n"), stdout);
3193 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
3194 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout);
3195 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout);
3196 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3197 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3198 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3199 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
3200 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
3201 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3202 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3203 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout);
3205 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
3206 prefixes to other gcc components\n"), stdout);
3207 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3208 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3209 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3210 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3212 --sysroot=<directory> Use <directory> as the root directory for headers\n\
3213 and libraries\n"), stdout);
3214 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3215 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3216 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3217 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3218 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3219 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3220 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3221 fputs (_(" -pie Create a position independent executable\n"), stdout);
3222 fputs (_(" -shared Create a shared library\n"), stdout);
3224 -x <language> Specify the language of the following input files\n\
3225 Permissible languages include: c c++ assembler none\n\
3226 'none' means revert to the default behavior of\n\
3227 guessing the language based on the file's extension\n\
3231 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3232 passed on to the various sub-processes invoked by %s. In order to pass\n\
3233 other options on to these processes the -W<letter> options must be used.\n\
3236 /* The rest of the options are displayed by invocations of the various
3241 add_preprocessor_option (const char *option, int len)
3243 preprocessor_options.safe_push (save_string (option, len));
3247 add_assembler_option (const char *option, int len)
3249 assembler_options.safe_push (save_string (option, len));
3253 add_linker_option (const char *option, int len)
3255 linker_options.safe_push (save_string (option, len));
3258 /* Allocate space for an input file in infiles. */
3263 if (n_infiles_alloc == 0)
3265 n_infiles_alloc = 16;
3266 infiles = XNEWVEC (struct infile, n_infiles_alloc);
3268 else if (n_infiles_alloc == n_infiles)
3270 n_infiles_alloc *= 2;
3271 infiles = XRESIZEVEC (struct infile, infiles, n_infiles_alloc);
3275 /* Store an input file with the given NAME and LANGUAGE in
3279 add_infile (const char *name, const char *language)
3282 infiles[n_infiles].name = name;
3283 infiles[n_infiles++].language = language;
3286 /* Allocate space for a switch in switches. */
3291 if (n_switches_alloc == 0)
3293 n_switches_alloc = 16;
3294 switches = XNEWVEC (struct switchstr, n_switches_alloc);
3296 else if (n_switches_alloc == n_switches)
3298 n_switches_alloc *= 2;
3299 switches = XRESIZEVEC (struct switchstr, switches, n_switches_alloc);
3303 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3304 as validated if VALIDATED and KNOWN if it is an internal switch. */
3307 save_switch (const char *opt, size_t n_args, const char *const *args,
3308 bool validated, bool known)
3311 switches[n_switches].part1 = opt + 1;
3313 switches[n_switches].args = 0;
3316 switches[n_switches].args = XNEWVEC (const char *, n_args + 1);
3317 memcpy (switches[n_switches].args, args, n_args * sizeof (const char *));
3318 switches[n_switches].args[n_args] = NULL;
3321 switches[n_switches].live_cond = 0;
3322 switches[n_switches].validated = validated;
3323 switches[n_switches].known = known;
3324 switches[n_switches].ordering = 0;
3328 /* Handle an option DECODED that is unknown to the option-processing
3332 driver_unknown_option_callback (const struct cl_decoded_option *decoded)
3334 const char *opt = decoded->arg;
3335 if (opt[1] == 'W' && opt[2] == 'n' && opt[3] == 'o' && opt[4] == '-'
3336 && !(decoded->errors & CL_ERR_NEGATIVE))
3338 /* Leave unknown -Wno-* options for the compiler proper, to be
3339 diagnosed only if there are warnings. */
3340 save_switch (decoded->canonical_option[0],
3341 decoded->canonical_option_num_elements - 1,
3342 &decoded->canonical_option[1], false, true);
3345 if (decoded->opt_index == OPT_SPECIAL_unknown)
3347 /* Give it a chance to define it a a spec file. */
3348 save_switch (decoded->canonical_option[0],
3349 decoded->canonical_option_num_elements - 1,
3350 &decoded->canonical_option[1], false, false);
3357 /* Handle an option DECODED that is not marked as CL_DRIVER.
3358 LANG_MASK will always be CL_DRIVER. */
3361 driver_wrong_lang_callback (const struct cl_decoded_option *decoded,
3362 unsigned int lang_mask ATTRIBUTE_UNUSED)
3364 /* At this point, non-driver options are accepted (and expected to
3365 be passed down by specs) unless marked to be rejected by the
3366 driver. Options to be rejected by the driver but accepted by the
3367 compilers proper are treated just like completely unknown
3369 const struct cl_option *option = &cl_options[decoded->opt_index];
3371 if (option->cl_reject_driver)
3372 error ("unrecognized command line option %qs",
3373 decoded->orig_option_with_args_text);
3375 save_switch (decoded->canonical_option[0],
3376 decoded->canonical_option_num_elements - 1,
3377 &decoded->canonical_option[1], false, true);
3380 static const char *spec_lang = 0;
3381 static int last_language_n_infiles;
3383 /* Parse -foffload option argument. */
3386 handle_foffload_option (const char *arg)
3388 const char *c, *cur, *n, *next, *end;
3391 /* If option argument starts with '-' then no target is specified and we
3392 do not need to parse it. */
3396 end = strchr (arg, '=');
3398 end = strchr (arg, '\0');
3403 next = strchr (cur, ',');
3406 next = (next > end) ? end : next;
3408 target = XNEWVEC (char, next - cur + 1);
3409 memcpy (target, cur, next - cur);
3410 target[next - cur] = '\0';
3412 /* If 'disable' is passed to the option, stop parsing the option and clean
3413 the list of offload targets. */
3414 if (strcmp (target, "disable") == 0)
3416 free (offload_targets);
3417 offload_targets = xstrdup ("");
3421 /* Check that GCC is configured to support the offload target. */
3422 c = OFFLOAD_TARGETS;
3425 n = strchr (c, ',');
3427 n = strchr (c, '\0');
3429 if (next - cur == n - c && strncmp (target, c, n - c) == 0)
3432 c = *n ? n + 1 : NULL;
3436 fatal_error (input_location,
3437 "GCC is not configured to support %s as offload target",
3440 if (!offload_targets)
3442 offload_targets = target;
3447 /* Check that the target hasn't already presented in the list. */
3448 c = offload_targets;
3451 n = strchr (c, ':');
3453 n = strchr (c, '\0');
3455 if (next - cur == n - c && strncmp (c, target, n - c) == 0)
3462 /* If duplicate is not found, append the target to the list. */
3465 size_t offload_targets_len = strlen (offload_targets);
3467 = XRESIZEVEC (char, offload_targets,
3468 offload_targets_len + next - cur + 2);
3469 if (offload_targets_len)
3470 offload_targets[offload_targets_len++] = ':';
3471 memcpy (offload_targets + offload_targets_len, target, next - cur);
3476 XDELETEVEC (target);
3480 /* Handle a driver option; arguments and return value as for
3484 driver_handle_option (struct gcc_options *opts,
3485 struct gcc_options *opts_set,
3486 const struct cl_decoded_option *decoded,
3487 unsigned int lang_mask ATTRIBUTE_UNUSED, int kind,
3489 const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED,
3490 diagnostic_context *dc)
3492 size_t opt_index = decoded->opt_index;
3493 const char *arg = decoded->arg;
3494 const char *compare_debug_replacement_opt;
3495 int value = decoded->value;
3496 bool validated = false;
3497 bool do_save = true;
3499 gcc_assert (opts == &global_options);
3500 gcc_assert (opts_set == &global_options_set);
3501 gcc_assert (kind == DK_UNSPECIFIED);
3502 gcc_assert (loc == UNKNOWN_LOCATION);
3503 gcc_assert (dc == global_dc);
3509 struct spec_list *sl;
3511 for (sl = specs; sl; sl = sl->next)
3512 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3513 if (link_command_spec)
3514 printf ("*link_command:\n%s\n\n", link_command_spec);
3518 case OPT_dumpversion:
3519 printf ("%s\n", spec_version);
3522 case OPT_dumpmachine:
3523 printf ("%s\n", spec_machine);
3529 /* CPP driver cannot obtain switch from cc1_options. */
3531 add_preprocessor_option ("--version", strlen ("--version"));
3532 add_assembler_option ("--version", strlen ("--version"));
3533 add_linker_option ("--version", strlen ("--version"));
3537 print_help_list = 1;
3539 /* CPP driver cannot obtain switch from cc1_options. */
3541 add_preprocessor_option ("--help", 6);
3542 add_assembler_option ("--help", 6);
3543 add_linker_option ("--help", 6);
3547 print_subprocess_help = 2;
3550 case OPT__target_help:
3551 print_subprocess_help = 1;
3553 /* CPP driver cannot obtain switch from cc1_options. */
3555 add_preprocessor_option ("--target-help", 13);
3556 add_assembler_option ("--target-help", 13);
3557 add_linker_option ("--target-help", 13);
3560 case OPT__no_sysroot_suffix:
3561 case OPT_pass_exit_codes:
3562 case OPT_print_search_dirs:
3563 case OPT_print_file_name_:
3564 case OPT_print_prog_name_:
3565 case OPT_print_multi_lib:
3566 case OPT_print_multi_directory:
3567 case OPT_print_sysroot:
3568 case OPT_print_multi_os_directory:
3569 case OPT_print_multiarch:
3570 case OPT_print_sysroot_headers_suffix:
3573 /* These options set the variables specified in common.opt
3574 automatically, and do not need to be saved for spec
3579 case OPT_print_libgcc_file_name:
3580 print_file_name = "libgcc.a";
3584 case OPT_fuse_ld_bfd:
3588 case OPT_fuse_ld_gold:
3592 case OPT_fcompare_debug_second:
3593 compare_debug_second = 1;
3596 case OPT_fcompare_debug:
3600 compare_debug_replacement_opt = "-fcompare-debug=";
3602 goto compare_debug_with_arg;
3605 compare_debug_replacement_opt = "-fcompare-debug=-gtoggle";
3607 goto compare_debug_with_arg;
3614 case OPT_fcompare_debug_:
3615 compare_debug_replacement_opt = decoded->canonical_option[0];
3616 compare_debug_with_arg:
3617 gcc_assert (decoded->canonical_option_num_elements == 1);
3618 gcc_assert (arg != NULL);
3623 if (compare_debug < 0)
3624 compare_debug_opt = NULL;
3626 compare_debug_opt = arg;
3627 save_switch (compare_debug_replacement_opt, 0, NULL, validated, true);
3630 case OPT_fdiagnostics_color_:
3631 diagnostic_color_init (dc, value);
3637 /* Pass the rest of this option to the assembler. */
3639 /* Split the argument at commas. */
3641 for (j = 0; arg[j]; j++)
3644 add_assembler_option (arg + prev, j - prev);
3648 /* Record the part after the last comma. */
3649 add_assembler_option (arg + prev, j - prev);
3657 /* Pass the rest of this option to the preprocessor. */
3659 /* Split the argument at commas. */
3661 for (j = 0; arg[j]; j++)
3664 add_preprocessor_option (arg + prev, j - prev);
3668 /* Record the part after the last comma. */
3669 add_preprocessor_option (arg + prev, j - prev);
3677 /* Split the argument at commas. */
3679 for (j = 0; arg[j]; j++)
3682 add_infile (save_string (arg + prev, j - prev), "*");
3685 /* Record the part after the last comma. */
3686 add_infile (arg + prev, "*");
3692 add_infile (arg, "*");
3696 case OPT_Xpreprocessor:
3697 add_preprocessor_option (arg, strlen (arg));
3701 case OPT_Xassembler:
3702 add_assembler_option (arg, strlen (arg));
3707 /* POSIX allows separation of -l and the lib arg; canonicalize
3708 by concatenating -l with its arg */
3709 add_infile (concat ("-l", arg, NULL), "*");
3714 /* Similarly, canonicalize -L for linkers that may not accept
3715 separate arguments. */
3716 save_switch (concat ("-L", arg, NULL), 0, NULL, validated, true);
3721 save_switch (concat ("-F", arg, NULL), 0, NULL, validated, true);
3724 case OPT_save_temps:
3725 save_temps_flag = SAVE_TEMPS_CWD;
3729 case OPT_save_temps_:
3730 if (strcmp (arg, "cwd") == 0)
3731 save_temps_flag = SAVE_TEMPS_CWD;
3732 else if (strcmp (arg, "obj") == 0
3733 || strcmp (arg, "object") == 0)
3734 save_temps_flag = SAVE_TEMPS_OBJ;
3736 fatal_error (input_location, "%qs is an unknown -save-temps option",
3737 decoded->orig_option_with_args_text);
3740 case OPT_no_canonical_prefixes:
3741 /* Already handled as a special case, so ignored here. */
3747 /* These options set the variables specified in common.opt
3748 automatically, but do need to be saved for spec
3754 struct user_specs *user = XNEW (struct user_specs);
3756 user->next = (struct user_specs *) 0;
3757 user->filename = arg;
3758 if (user_specs_tail)
3759 user_specs_tail->next = user;
3761 user_specs_head = user;
3762 user_specs_tail = user;
3768 target_system_root = arg;
3769 target_system_root_changed = 1;
3774 if (report_times_to_file)
3775 fclose (report_times_to_file);
3776 report_times_to_file = fopen (arg, "a");
3782 This is similar to -v except that there is no execution
3783 of the commands and the echoed arguments are quoted. It
3784 is intended for use in shell scripts to capture the
3785 driver-generated command line. */
3786 verbose_only_flag++;
3793 size_t len = strlen (arg);
3795 /* Catch the case where the user has forgotten to append a
3796 directory separator to the path. Note, they may be using
3797 -B to add an executable name prefix, eg "i386-elf-", in
3798 order to distinguish between multiple installations of
3799 GCC in the same directory. Hence we must check to see
3800 if appending a directory separator actually makes a
3801 valid directory name. */
3802 if (!IS_DIR_SEPARATOR (arg[len - 1])
3803 && is_directory (arg, false))
3805 char *tmp = XNEWVEC (char, len + 2);
3807 tmp[len] = DIR_SEPARATOR;
3812 add_prefix (&exec_prefixes, arg, NULL,
3813 PREFIX_PRIORITY_B_OPT, 0, 0);
3814 add_prefix (&startfile_prefixes, arg, NULL,
3815 PREFIX_PRIORITY_B_OPT, 0, 0);
3816 add_prefix (&include_prefixes, arg, NULL,
3817 PREFIX_PRIORITY_B_OPT, 0, 0);
3824 if (!strcmp (spec_lang, "none"))
3825 /* Suppress the warning if -xnone comes after the last input
3826 file, because alternate command interfaces like g++ might
3827 find it useful to place -xnone after each input file. */
3830 last_language_n_infiles = n_infiles;
3836 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3837 arg = convert_filename (arg, ! have_c, 0);
3840 /* Save the output name in case -save-temps=obj was used. */
3841 save_temps_prefix = xstrdup (arg);
3842 /* On some systems, ld cannot handle "-o" without a space. So
3843 split the option from its argument. */
3844 save_switch ("-o", 1, &arg, validated, true);
3847 case OPT_static_libgcc:
3848 case OPT_shared_libgcc:
3849 case OPT_static_libgfortran:
3850 case OPT_static_libstdc__:
3851 /* These are always valid, since gcc.c itself understands the
3852 first two, gfortranspec.c understands -static-libgfortran and
3853 g++spec.c understands -static-libstdc++ */
3862 handle_foffload_option (arg);
3866 /* Various driver options need no special processing at this
3867 point, having been handled in a prescan above or being
3868 handled by specs. */
3873 save_switch (decoded->canonical_option[0],
3874 decoded->canonical_option_num_elements - 1,
3875 &decoded->canonical_option[1], validated, true);
3879 /* Put the driver's standard set of option handlers in *HANDLERS. */
3882 set_option_handlers (struct cl_option_handlers *handlers)
3884 handlers->unknown_option_callback = driver_unknown_option_callback;
3885 handlers->wrong_lang_callback = driver_wrong_lang_callback;
3886 handlers->num_handlers = 3;
3887 handlers->handlers[0].handler = driver_handle_option;
3888 handlers->handlers[0].mask = CL_DRIVER;
3889 handlers->handlers[1].handler = common_handle_option;
3890 handlers->handlers[1].mask = CL_COMMON;
3891 handlers->handlers[2].handler = target_handle_option;
3892 handlers->handlers[2].mask = CL_TARGET;
3895 /* Create the vector `switches' and its contents.
3896 Store its length in `n_switches'. */
3899 process_command (unsigned int decoded_options_count,
3900 struct cl_decoded_option *decoded_options)
3904 char *tooldir_prefix, *tooldir_prefix2;
3905 char *(*get_relative_prefix) (const char *, const char *,
3906 const char *) = NULL;
3907 struct cl_option_handlers handlers;
3910 gcc_exec_prefix = getenv ("GCC_EXEC_PREFIX");
3914 added_libraries = 0;
3916 /* Figure compiler version from version string. */
3918 compiler_version = temp1 = xstrdup (version_string);
3920 for (; *temp1; ++temp1)
3929 /* Handle any -no-canonical-prefixes flag early, to assign the function
3930 that builds relative prefixes. This function creates default search
3931 paths that are needed later in normal option handling. */
3933 for (j = 1; j < decoded_options_count; j++)
3935 if (decoded_options[j].opt_index == OPT_no_canonical_prefixes)
3937 get_relative_prefix = make_relative_prefix_ignore_links;
3941 if (! get_relative_prefix)
3942 get_relative_prefix = make_relative_prefix;
3944 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3945 see if we can create it from the pathname specified in
3946 decoded_options[0].arg. */
3948 gcc_libexec_prefix = standard_libexec_prefix;
3950 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3951 if (!gcc_exec_prefix)
3953 #if 0 /* Never use relative prefix (not bootstrapped) */
3954 gcc_exec_prefix = get_relative_prefix (decoded_options[0].arg,
3955 standard_bindir_prefix,
3956 standard_exec_prefix);
3957 gcc_libexec_prefix = get_relative_prefix (decoded_options[0].arg,
3958 standard_bindir_prefix,
3959 standard_libexec_prefix);
3960 if (gcc_exec_prefix)
3961 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3966 /* make_relative_prefix requires a program name, but
3967 GCC_EXEC_PREFIX is typically a directory name with a trailing
3968 / (which is ignored by make_relative_prefix), so append a
3970 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL);
3971 gcc_libexec_prefix = get_relative_prefix (tmp_prefix,
3972 standard_exec_prefix,
3973 standard_libexec_prefix);
3975 /* The path is unrelocated, so fallback to the original setting. */
3976 if (!gcc_libexec_prefix)
3977 gcc_libexec_prefix = standard_libexec_prefix;
3983 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3984 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3985 or an automatically created GCC_EXEC_PREFIX from
3986 decoded_options[0].arg. */
3988 /* Do language-specific adjustment/addition of flags. */
3989 lang_specific_driver (&decoded_options, &decoded_options_count,
3992 if (gcc_exec_prefix)
3994 int len = strlen (gcc_exec_prefix);
3996 if (len > (int) sizeof ("/lib/gcc/") - 1
3997 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3999 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
4000 if (IS_DIR_SEPARATOR (*temp)
4001 && filename_ncmp (temp + 1, "lib", 3) == 0
4002 && IS_DIR_SEPARATOR (temp[4])
4003 && filename_ncmp (temp + 5, "gcc", 3) == 0)
4004 len -= sizeof ("/lib/gcc/") - 1;
4007 #if 0 /* Bad Paths */
4008 set_std_prefix (gcc_exec_prefix, len);
4009 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
4010 PREFIX_PRIORITY_LAST, 0, 0);
4011 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
4012 PREFIX_PRIORITY_LAST, 0, 0);
4016 /* COMPILER_PATH and LIBRARY_PATH have values
4017 that are lists of directory names with colons. */
4019 temp = getenv ("COMPILER_PATH");
4022 const char *startp, *endp;
4023 char *nstore = (char *) alloca (strlen (temp) + 3);
4025 startp = endp = temp;
4028 if (*endp == PATH_SEPARATOR || *endp == 0)
4030 strncpy (nstore, startp, endp - startp);
4032 strcpy (nstore, concat (".", dir_separator_str, NULL));
4033 else if (!IS_DIR_SEPARATOR (endp[-1]))
4035 nstore[endp - startp] = DIR_SEPARATOR;
4036 nstore[endp - startp + 1] = 0;
4039 nstore[endp - startp] = 0;
4040 add_prefix (&exec_prefixes, nstore, 0,
4041 PREFIX_PRIORITY_LAST, 0, 0);
4042 add_prefix (&include_prefixes, nstore, 0,
4043 PREFIX_PRIORITY_LAST, 0, 0);
4046 endp = startp = endp + 1;
4053 temp = getenv (LIBRARY_PATH_ENV);
4054 if (temp && *cross_compile == '0')
4056 const char *startp, *endp;
4057 char *nstore = (char *) alloca (strlen (temp) + 3);
4059 startp = endp = temp;
4062 if (*endp == PATH_SEPARATOR || *endp == 0)
4064 strncpy (nstore, startp, endp - startp);
4066 strcpy (nstore, concat (".", dir_separator_str, NULL));
4067 else if (!IS_DIR_SEPARATOR (endp[-1]))
4069 nstore[endp - startp] = DIR_SEPARATOR;
4070 nstore[endp - startp + 1] = 0;
4073 nstore[endp - startp] = 0;
4074 add_prefix (&startfile_prefixes, nstore, NULL,
4075 PREFIX_PRIORITY_LAST, 0, 1);
4078 endp = startp = endp + 1;
4085 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
4086 temp = getenv ("LPATH");
4087 if (temp && *cross_compile == '0')
4089 const char *startp, *endp;
4090 char *nstore = (char *) alloca (strlen (temp) + 3);
4092 startp = endp = temp;
4095 if (*endp == PATH_SEPARATOR || *endp == 0)
4097 strncpy (nstore, startp, endp - startp);
4099 strcpy (nstore, concat (".", dir_separator_str, NULL));
4100 else if (!IS_DIR_SEPARATOR (endp[-1]))
4102 nstore[endp - startp] = DIR_SEPARATOR;
4103 nstore[endp - startp + 1] = 0;
4106 nstore[endp - startp] = 0;
4107 add_prefix (&startfile_prefixes, nstore, NULL,
4108 PREFIX_PRIORITY_LAST, 0, 1);
4111 endp = startp = endp + 1;
4118 /* Process the options and store input files and switches in their
4121 last_language_n_infiles = -1;
4123 set_option_handlers (&handlers);
4125 for (j = 1; j < decoded_options_count; j++)
4127 switch (decoded_options[j].opt_index)
4139 for (j = 1; j < decoded_options_count; j++)
4141 if (decoded_options[j].opt_index == OPT_SPECIAL_input_file)
4143 const char *arg = decoded_options[j].arg;
4144 const char *p = strrchr (arg, '@');
4148 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4149 arg = convert_filename (arg, 0, access (arg, F_OK));
4151 /* For LTO static archive support we handle input file
4152 specifications that are composed of a filename and
4153 an offset like FNAME@OFFSET. */
4156 && sscanf (p, "@%li%n", &offset, &consumed) >= 1
4157 && strlen (p) == (unsigned int)consumed)
4159 fname = (char *)xmalloc (p - arg + 1);
4160 memcpy (fname, arg, p - arg);
4161 fname[p - arg] = '\0';
4162 /* Only accept non-stdin and existing FNAME parts, otherwise
4163 try with the full name. */
4164 if (strcmp (fname, "-") == 0 || access (fname, F_OK) < 0)
4167 fname = xstrdup (arg);
4171 fname = xstrdup (arg);
4173 if (strcmp (fname, "-") != 0 && access (fname, F_OK) < 0)
4174 perror_with_name (fname);
4176 add_infile (arg, spec_lang);
4182 read_cmdline_option (&global_options, &global_options_set,
4183 decoded_options + j, UNKNOWN_LOCATION,
4184 CL_DRIVER, &handlers, global_dc);
4188 && strcmp (output_file, "-") != 0
4189 && strcmp (output_file, HOST_BIT_BUCKET) != 0)
4192 for (i = 0; i < n_infiles; i++)
4193 if ((!infiles[i].language || infiles[i].language[0] != '*')
4194 && canonical_filename_eq (infiles[i].name, output_file))
4195 fatal_error (input_location,
4196 "input file %qs is the same as output file",
4200 /* If -save-temps=obj and -o name, create the prefix to use for %b.
4201 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
4202 if (save_temps_flag == SAVE_TEMPS_OBJ && save_temps_prefix != NULL)
4204 save_temps_length = strlen (save_temps_prefix);
4205 temp = strrchr (lbasename (save_temps_prefix), '.');
4208 save_temps_length -= strlen (temp);
4209 save_temps_prefix[save_temps_length] = '\0';
4213 else if (save_temps_prefix != NULL)
4215 free (save_temps_prefix);
4216 save_temps_prefix = NULL;
4219 if (save_temps_flag && use_pipes)
4221 /* -save-temps overrides -pipe, so that temp files are produced */
4222 if (save_temps_flag)
4223 warning (0, "-pipe ignored because -save-temps specified");
4229 const char *gcd = getenv ("GCC_COMPARE_DEBUG");
4231 if (gcd && gcd[0] == '-')
4234 compare_debug_opt = gcd;
4236 else if (gcd && *gcd && strcmp (gcd, "0"))
4239 compare_debug_opt = "-gtoggle";
4242 else if (compare_debug < 0)
4245 gcc_assert (!compare_debug_opt);
4248 /* Set up the search paths. We add directories that we expect to
4249 contain GNU Toolchain components before directories specified by
4250 the machine description so that we will find GNU components (like
4251 the GNU assembler) before those of the host system. */
4253 /* If we don't know where the toolchain has been installed, use the
4254 configured-in locations. */
4255 if (!gcc_exec_prefix)
4258 add_prefix (&exec_prefixes, standard_libexec_prefix, NULL,
4259 PREFIX_PRIORITY_LAST, 0, 0);
4260 # if 0 /* Bad paths */
4261 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
4262 PREFIX_PRIORITY_LAST, 1, 0);
4263 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
4264 PREFIX_PRIORITY_LAST, 2, 0);
4265 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
4266 PREFIX_PRIORITY_LAST, 2, 0);
4269 #if 0 /* Bad paths */
4270 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
4271 PREFIX_PRIORITY_LAST, 1, 0);
4275 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix));
4276 tooldir_prefix2 = concat (tooldir_base_prefix, spec_host_machine,
4277 dir_separator_str, NULL);
4279 /* Look for tools relative to the location from which the driver is
4280 running, or, if that is not available, the configured prefix. */
4282 = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
4283 spec_host_machine, dir_separator_str, spec_version,
4284 accel_dir_suffix, dir_separator_str, tooldir_prefix2, NULL);
4285 free (tooldir_prefix2);
4287 #if 0 /* Bad paths */
4288 add_prefix (&exec_prefixes,
4289 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
4290 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0);
4291 add_prefix (&startfile_prefixes,
4292 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
4293 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1);
4295 free (tooldir_prefix);
4297 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
4298 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
4299 then consider it to relocate with the rest of the GCC installation
4300 if GCC_EXEC_PREFIX is set.
4301 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
4302 if (target_system_root && !target_system_root_changed && gcc_exec_prefix)
4304 char *tmp_prefix = get_relative_prefix (decoded_options[0].arg,
4305 standard_bindir_prefix,
4306 target_system_root);
4307 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
4309 target_system_root = tmp_prefix;
4310 target_system_root_changed = 1;
4315 /* More prefixes are enabled in main, after we read the specs file
4316 and determine whether this is cross-compilation or not. */
4318 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4319 warning (0, "%<-x %s%> after last input file has no effect", spec_lang);
4321 /* Synthesize -fcompare-debug flag from the GCC_COMPARE_DEBUG
4322 environment variable. */
4323 if (compare_debug == 2 || compare_debug == 3)
4325 const char *opt = concat ("-fcompare-debug=", compare_debug_opt, NULL);
4326 save_switch (opt, 0, NULL, false, true);
4330 /* Ensure we only invoke each subprocess once. */
4331 if (print_subprocess_help || print_help_list || print_version)
4335 /* Create a dummy input file, so that we can pass
4336 the help option on to the various sub-processes. */
4337 add_infile ("help-dummy", "c");
4341 switches[n_switches].part1 = 0;
4343 infiles[n_infiles].name = 0;
4346 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4347 and place that in the environment. */
4350 set_collect_gcc_options (void)
4355 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4357 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4358 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4361 for (i = 0; (int) i < n_switches; i++)
4363 const char *const *args;
4366 obstack_grow (&collect_obstack, " ", 1);
4370 /* Ignore elided switches. */
4371 if ((switches[i].live_cond
4372 & (SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC))
4376 obstack_grow (&collect_obstack, "'-", 2);
4377 q = switches[i].part1;
4378 while ((p = strchr (q, '\'')))
4380 obstack_grow (&collect_obstack, q, p - q);
4381 obstack_grow (&collect_obstack, "'\\''", 4);
4384 obstack_grow (&collect_obstack, q, strlen (q));
4385 obstack_grow (&collect_obstack, "'", 1);
4387 for (args = switches[i].args; args && *args; args++)
4389 obstack_grow (&collect_obstack, " '", 2);
4391 while ((p = strchr (q, '\'')))
4393 obstack_grow (&collect_obstack, q, p - q);
4394 obstack_grow (&collect_obstack, "'\\''", 4);
4397 obstack_grow (&collect_obstack, q, strlen (q));
4398 obstack_grow (&collect_obstack, "'", 1);
4401 obstack_grow (&collect_obstack, "\0", 1);
4402 xputenv (XOBFINISH (&collect_obstack, char *));
4405 /* Process a spec string, accumulating and running commands. */
4407 /* These variables describe the input file name.
4408 input_file_number is the index on outfiles of this file,
4409 so that the output file name can be stored for later use by %o.
4410 input_basename is the start of the part of the input file
4411 sans all directory names, and basename_length is the number
4412 of characters starting there excluding the suffix .c or whatever. */
4414 static const char *gcc_input_filename;
4415 static int input_file_number;
4416 size_t input_filename_length;
4417 static int basename_length;
4418 static int suffixed_basename_length;
4419 static const char *input_basename;
4420 static const char *input_suffix;
4421 #ifndef HOST_LACKS_INODE_NUMBERS
4422 static struct stat input_stat;
4424 static int input_stat_set;
4426 /* The compiler used to process the current input file. */
4427 static struct compiler *input_file_compiler;
4429 /* These are variables used within do_spec and do_spec_1. */
4431 /* Nonzero if an arg has been started and not yet terminated
4432 (with space, tab or newline). */
4433 static int arg_going;
4435 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4436 is a temporary file name. */
4437 static int delete_this_arg;
4439 /* Nonzero means %w has been seen; the next arg to be terminated
4440 is the output file name of this compilation. */
4441 static int this_is_output_file;
4443 /* Nonzero means %s has been seen; the next arg to be terminated
4444 is the name of a library file and we should try the standard
4445 search dirs for it. */
4446 static int this_is_library_file;
4448 /* Nonzero means %T has been seen; the next arg to be terminated
4449 is the name of a linker script and we should try all of the
4450 standard search dirs for it. If it is found insert a --script
4451 command line switch and then substitute the full path in place,
4452 otherwise generate an error message. */
4453 static int this_is_linker_script;
4455 /* Nonzero means that the input of this command is coming from a pipe. */
4456 static int input_from_pipe;
4458 /* Nonnull means substitute this for any suffix when outputting a switches
4460 static const char *suffix_subst;
4462 /* If there is an argument being accumulated, terminate it and store it. */
4465 end_going_arg (void)
4471 obstack_1grow (&obstack, 0);
4472 string = XOBFINISH (&obstack, const char *);
4473 if (this_is_library_file)
4474 string = find_file (string);
4475 if (this_is_linker_script)
4477 char * full_script_path = find_a_file (&startfile_prefixes, string, R_OK, true);
4479 if (full_script_path == NULL)
4481 error ("unable to locate default linker script %qs in the library search paths", string);
4482 /* Script was not found on search path. */
4485 store_arg ("--script", false, false);
4486 string = full_script_path;
4488 store_arg (string, delete_this_arg, this_is_output_file);
4489 if (this_is_output_file)
4490 outfiles[input_file_number] = string;
4496 /* Parse the WRAPPER string which is a comma separated list of the command line
4497 and insert them into the beginning of argbuf. */
4500 insert_wrapper (const char *wrapper)
4504 char *buf = xstrdup (wrapper);
4506 unsigned int old_length = argbuf.length ();
4514 while ((p = strchr (p, ',')) != NULL);
4516 argbuf.safe_grow (old_length + n);
4517 memmove (argbuf.address () + n,
4519 old_length * sizeof (const_char_p));
4533 while ((p = strchr (p, ',')) != NULL);
4534 gcc_assert (i == n);
4537 /* Process the spec SPEC and run the commands specified therein.
4538 Returns 0 if the spec is successfully processed; -1 if failed. */
4541 do_spec (const char *spec)
4545 value = do_spec_2 (spec);
4547 /* Force out any unfinished command.
4548 If -pipe, this forces out the last command if it ended in `|'. */
4551 if (argbuf.length () > 0
4552 && !strcmp (argbuf.last (), "|"))
4555 set_collect_gcc_options ();
4557 if (argbuf.length () > 0)
4565 do_spec_2 (const char *spec)
4571 delete_this_arg = 0;
4572 this_is_output_file = 0;
4573 this_is_library_file = 0;
4574 this_is_linker_script = 0;
4575 input_from_pipe = 0;
4576 suffix_subst = NULL;
4578 result = do_spec_1 (spec, 0, NULL);
4586 /* Process the given spec string and add any new options to the end
4587 of the switches/n_switches array. */
4590 do_option_spec (const char *name, const char *spec)
4592 unsigned int i, value_count, value_len;
4593 const char *p, *q, *value;
4594 char *tmp_spec, *tmp_spec_p;
4596 if (configure_default_options[0].name == NULL)
4599 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4600 if (strcmp (configure_default_options[i].name, name) == 0)
4602 if (i == ARRAY_SIZE (configure_default_options))
4605 value = configure_default_options[i].value;
4606 value_len = strlen (value);
4608 /* Compute the size of the final spec. */
4611 while ((p = strstr (p, "%(VALUE)")) != NULL)
4617 /* Replace each %(VALUE) by the specified value. */
4618 tmp_spec = (char *) alloca (strlen (spec) + 1
4619 + value_count * (value_len - strlen ("%(VALUE)")));
4620 tmp_spec_p = tmp_spec;
4622 while ((p = strstr (q, "%(VALUE)")) != NULL)
4624 memcpy (tmp_spec_p, q, p - q);
4625 tmp_spec_p = tmp_spec_p + (p - q);
4626 memcpy (tmp_spec_p, value, value_len);
4627 tmp_spec_p += value_len;
4628 q = p + strlen ("%(VALUE)");
4630 strcpy (tmp_spec_p, q);
4632 do_self_spec (tmp_spec);
4635 /* Process the given spec string and add any new options to the end
4636 of the switches/n_switches array. */
4639 do_self_spec (const char *spec)
4644 do_spec_1 (" ", 0, NULL);
4646 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4647 do_self_specs adds the replacements to switches array, so it shouldn't
4648 be processed afterwards. */
4649 for (i = 0; i < n_switches; i++)
4650 if ((switches[i].live_cond & SWITCH_IGNORE))
4651 switches[i].live_cond |= SWITCH_IGNORE_PERMANENTLY;
4653 if (argbuf.length () > 0)
4655 const char **argbuf_copy;
4656 struct cl_decoded_option *decoded_options;
4657 struct cl_option_handlers handlers;
4658 unsigned int decoded_options_count;
4661 /* Create a copy of argbuf with a dummy argv[0] entry for
4662 decode_cmdline_options_to_array. */
4663 argbuf_copy = XNEWVEC (const char *,
4664 argbuf.length () + 1);
4665 argbuf_copy[0] = "";
4666 memcpy (argbuf_copy + 1, argbuf.address (),
4667 argbuf.length () * sizeof (const char *));
4669 decode_cmdline_options_to_array (argbuf.length () + 1,
4671 CL_DRIVER, &decoded_options,
4672 &decoded_options_count);
4675 set_option_handlers (&handlers);
4677 for (j = 1; j < decoded_options_count; j++)
4679 switch (decoded_options[j].opt_index)
4681 case OPT_SPECIAL_input_file:
4682 /* Specs should only generate options, not input
4684 if (strcmp (decoded_options[j].arg, "-") != 0)
4685 fatal_error (input_location,
4686 "switch %qs does not start with %<-%>",
4687 decoded_options[j].arg);
4689 fatal_error (input_location,
4690 "spec-generated switch is just %<-%>");
4693 case OPT_fcompare_debug_second:
4694 case OPT_fcompare_debug:
4695 case OPT_fcompare_debug_:
4697 /* Avoid duplicate processing of some options from
4698 compare-debug specs; just save them here. */
4699 save_switch (decoded_options[j].canonical_option[0],
4700 (decoded_options[j].canonical_option_num_elements
4702 &decoded_options[j].canonical_option[1], false, true);
4706 read_cmdline_option (&global_options, &global_options_set,
4707 decoded_options + j, UNKNOWN_LOCATION,
4708 CL_DRIVER, &handlers, global_dc);
4714 switches[n_switches].part1 = 0;
4718 /* Callback for processing %D and %I specs. */
4720 struct spec_path_info {
4725 bool separate_options;
4729 spec_path (char *path, void *data)
4731 struct spec_path_info *info = (struct spec_path_info *) data;
4735 if (info->omit_relative && !IS_ABSOLUTE_PATH (path))
4738 if (info->append_len != 0)
4740 len = strlen (path);
4741 memcpy (path + len, info->append, info->append_len + 1);
4744 if (!is_directory (path, true))
4747 do_spec_1 (info->option, 1, NULL);
4748 if (info->separate_options)
4749 do_spec_1 (" ", 0, NULL);
4751 if (info->append_len == 0)
4753 len = strlen (path);
4754 save = path[len - 1];
4755 if (IS_DIR_SEPARATOR (path[len - 1]))
4756 path[len - 1] = '\0';
4759 do_spec_1 (path, 1, NULL);
4760 do_spec_1 (" ", 0, NULL);
4762 /* Must not damage the original path. */
4763 if (info->append_len == 0)
4764 path[len - 1] = save;
4769 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4773 create_at_file (char **argv)
4775 char *temp_file = make_temp_file ("");
4776 char *at_argument = concat ("@", temp_file, NULL);
4777 FILE *f = fopen (temp_file, "w");
4781 fatal_error (input_location, "could not open temporary response file %s",
4784 status = writeargv (argv, f);
4787 fatal_error (input_location,
4788 "could not write to temporary response file %s",
4791 status = fclose (f);
4794 fatal_error (input_location, "could not close temporary response file %s",
4797 store_arg (at_argument, 0, 0);
4799 record_temp_file (temp_file, !save_temps_flag, !save_temps_flag);
4802 /* True if we should compile INFILE. */
4805 compile_input_file_p (struct infile *infile)
4807 if ((!infile->language) || (infile->language[0] != '*'))
4808 if (infile->incompiler == input_file_compiler)
4813 /* Process each member of VEC as a spec. */
4816 do_specs_vec (vec<char_p> vec)
4821 FOR_EACH_VEC_ELT (vec, ix, opt)
4823 do_spec_1 (opt, 1, NULL);
4824 /* Make each accumulated option a separate argument. */
4825 do_spec_1 (" ", 0, NULL);
4829 /* Process the sub-spec SPEC as a portion of a larger spec.
4830 This is like processing a whole spec except that we do
4831 not initialize at the beginning and we do not supply a
4832 newline by default at the end.
4833 INSWITCH nonzero means don't process %-sequences in SPEC;
4834 in this case, % is treated as an ordinary character.
4835 This is used while substituting switches.
4836 INSWITCH nonzero also causes SPC not to terminate an argument.
4838 Value is zero unless a line was finished
4839 and the command on that line reported an error. */
4842 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4844 const char *p = spec;
4849 /* If it's an empty string argument to a switch, keep it as is. */
4850 if (inswitch && !*p)
4854 /* If substituting a switch, treat all chars like letters.
4855 Otherwise, NL, SPC, TAB and % are special. */
4856 switch (inswitch ? 'a' : c)
4861 if (argbuf.length () > 0
4862 && !strcmp (argbuf.last (), "|"))
4864 /* A `|' before the newline means use a pipe here,
4865 but only if -pipe was specified.
4866 Otherwise, execute now and don't pass the `|' as an arg. */
4869 input_from_pipe = 1;
4876 set_collect_gcc_options ();
4878 if (argbuf.length () > 0)
4884 /* Reinitialize for a new command, and for a new argument. */
4887 delete_this_arg = 0;
4888 this_is_output_file = 0;
4889 this_is_library_file = 0;
4890 this_is_linker_script = 0;
4891 input_from_pipe = 0;
4898 obstack_1grow (&obstack, c);
4906 /* Reinitialize for a new argument. */
4907 delete_this_arg = 0;
4908 this_is_output_file = 0;
4909 this_is_library_file = 0;
4910 this_is_linker_script = 0;
4917 fatal_error (input_location, "spec %qs invalid", spec);
4920 if (save_temps_length)
4921 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4923 obstack_grow (&obstack, input_basename, basename_length);
4924 if (compare_debug < 0)
4925 obstack_grow (&obstack, ".gk", 3);
4930 if (save_temps_length)
4931 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4933 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4934 if (compare_debug < 0)
4935 obstack_grow (&obstack, ".gk", 3);
4940 delete_this_arg = 2;
4943 /* Dump out the directories specified with LIBRARY_PATH,
4944 followed by the absolute directories
4945 that we search for startfiles. */
4948 struct spec_path_info info;
4951 info.append_len = 0;
4952 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4953 /* Used on systems which record the specified -L dirs
4954 and use them to search for dynamic linking.
4955 Relative directories always come from -B,
4956 and it is better not to use them for searching
4957 at run time. In particular, stage1 loses. */
4958 info.omit_relative = true;
4960 info.omit_relative = false;
4962 info.separate_options = false;
4964 for_each_path (&startfile_prefixes, true, 0, spec_path, &info);
4969 /* %efoo means report an error with `foo' as error message
4970 and don't execute any more commands for this file. */
4974 while (*p != 0 && *p != '\n')
4976 buf = (char *) alloca (p - q + 1);
4977 strncpy (buf, q, p - q);
4979 error ("%s", _(buf));
4984 /* %nfoo means report a notice with `foo' on stderr. */
4988 while (*p != 0 && *p != '\n')
4990 buf = (char *) alloca (p - q + 1);
4991 strncpy (buf, q, p - q);
4993 inform (0, "%s", _(buf));
5003 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
5004 defined, and it is not a directory, and it is
5005 writable, use it. Otherwise, treat this like any
5006 other temporary file. */
5008 if ((!save_temps_flag)
5009 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
5010 && (access (HOST_BIT_BUCKET, W_OK) == 0))
5012 obstack_grow (&obstack, HOST_BIT_BUCKET,
5013 strlen (HOST_BIT_BUCKET));
5014 delete_this_arg = 0;
5019 goto create_temp_file;
5023 obstack_1grow (&obstack, '-');
5024 delete_this_arg = 0;
5027 /* consume suffix */
5028 while (*p == '.' || ISALNUM ((unsigned char) *p))
5030 if (p[0] == '%' && p[1] == 'O')
5035 goto create_temp_file;
5039 /* consume suffix */
5040 while (*p == '.' || ISALNUM ((unsigned char) *p))
5042 if (p[0] == '%' && p[1] == 'O')
5047 goto create_temp_file;
5053 struct temp_name *t;
5055 const char *suffix = p;
5056 char *saved_suffix = NULL;
5058 while (*p == '.' || ISALNUM ((unsigned char) *p))
5060 suffix_length = p - suffix;
5061 if (p[0] == '%' && p[1] == 'O')
5064 /* We don't support extra suffix characters after %O. */
5065 if (*p == '.' || ISALNUM ((unsigned char) *p))
5066 fatal_error (input_location,
5067 "spec %qs has invalid %<%%0%c%>", spec, *p);
5068 if (suffix_length == 0)
5069 suffix = TARGET_OBJECT_SUFFIX;
5073 = XNEWVEC (char, suffix_length
5074 + strlen (TARGET_OBJECT_SUFFIX) + 1);
5075 strncpy (saved_suffix, suffix, suffix_length);
5076 strcpy (saved_suffix + suffix_length,
5077 TARGET_OBJECT_SUFFIX);
5079 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
5082 if (compare_debug < 0)
5084 suffix = concat (".gk", suffix, NULL);
5088 /* If -save-temps=obj and -o were specified, use that for the
5090 if (save_temps_length)
5093 temp_filename_length
5094 = save_temps_length + suffix_length + 1;
5095 tmp = (char *) alloca (temp_filename_length);
5096 memcpy (tmp, save_temps_prefix, save_temps_length);
5097 memcpy (tmp + save_temps_length, suffix, suffix_length);
5098 tmp[save_temps_length + suffix_length] = '\0';
5099 temp_filename = save_string (tmp, save_temps_length
5101 obstack_grow (&obstack, temp_filename,
5102 temp_filename_length);
5104 delete_this_arg = 0;
5108 /* If the gcc_input_filename has the same suffix specified
5109 for the %g, %u, or %U, and -save-temps is specified,
5110 we could end up using that file as an intermediate
5111 thus clobbering the user's source file (.e.g.,
5112 gcc -save-temps foo.s would clobber foo.s with the
5113 output of cpp0). So check for this condition and
5114 generate a temp file as the intermediate. */
5116 if (save_temps_flag)
5119 temp_filename_length = basename_length + suffix_length + 1;
5120 tmp = (char *) alloca (temp_filename_length);
5121 memcpy (tmp, input_basename, basename_length);
5122 memcpy (tmp + basename_length, suffix, suffix_length);
5123 tmp[basename_length + suffix_length] = '\0';
5124 temp_filename = tmp;
5126 if (filename_cmp (temp_filename, gcc_input_filename) != 0)
5128 #ifndef HOST_LACKS_INODE_NUMBERS
5129 struct stat st_temp;
5131 /* Note, set_input() resets input_stat_set to 0. */
5132 if (input_stat_set == 0)
5134 input_stat_set = stat (gcc_input_filename,
5136 if (input_stat_set >= 0)
5140 /* If we have the stat for the gcc_input_filename
5141 and we can do the stat for the temp_filename
5142 then the they could still refer to the same
5143 file if st_dev/st_ino's are the same. */
5144 if (input_stat_set != 1
5145 || stat (temp_filename, &st_temp) < 0
5146 || input_stat.st_dev != st_temp.st_dev
5147 || input_stat.st_ino != st_temp.st_ino)
5149 /* Just compare canonical pathnames. */
5150 char* input_realname = lrealpath (gcc_input_filename);
5151 char* temp_realname = lrealpath (temp_filename);
5152 bool files_differ = filename_cmp (input_realname, temp_realname);
5153 free (input_realname);
5154 free (temp_realname);
5158 temp_filename = save_string (temp_filename,
5159 temp_filename_length + 1);
5160 obstack_grow (&obstack, temp_filename,
5161 temp_filename_length);
5163 delete_this_arg = 0;
5169 /* See if we already have an association of %g/%u/%U and
5171 for (t = temp_names; t; t = t->next)
5172 if (t->length == suffix_length
5173 && strncmp (t->suffix, suffix, suffix_length) == 0
5174 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
5177 /* Make a new association if needed. %u and %j
5179 if (t == 0 || c == 'u' || c == 'j')
5183 t = XNEW (struct temp_name);
5184 t->next = temp_names;
5187 t->length = suffix_length;
5190 t->suffix = saved_suffix;
5191 saved_suffix = NULL;
5194 t->suffix = save_string (suffix, suffix_length);
5195 t->unique = (c == 'u' || c == 'U' || c == 'j');
5196 temp_filename = make_temp_file (t->suffix);
5197 temp_filename_length = strlen (temp_filename);
5198 t->filename = temp_filename;
5199 t->filename_length = temp_filename_length;
5202 free (saved_suffix);
5204 obstack_grow (&obstack, t->filename, t->filename_length);
5205 delete_this_arg = 1;
5213 if (at_file_supplied)
5215 /* We are going to expand `%i' to `@FILE', where FILE
5216 is a newly-created temporary filename. The filenames
5217 that would usually be expanded in place of %o will be
5218 written to the temporary file. */
5223 for (i = 0; i < n_infiles; i++)
5224 if (compile_input_file_p (&infiles[i]))
5227 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
5229 /* Copy the strings over. */
5230 for (i = 0, j = 0; i < n_infiles; i++)
5231 if (compile_input_file_p (&infiles[i]))
5233 argv[j] = CONST_CAST (char *, infiles[i].name);
5234 infiles[i].compiled = true;
5239 create_at_file (argv);
5242 for (i = 0; (int) i < n_infiles; i++)
5243 if (compile_input_file_p (&infiles[i]))
5245 store_arg (infiles[i].name, 0, 0);
5246 infiles[i].compiled = true;
5251 obstack_grow (&obstack, gcc_input_filename,
5252 input_filename_length);
5259 struct spec_path_info info;
5263 do_spec_1 ("-imultilib", 1, NULL);
5264 /* Make this a separate argument. */
5265 do_spec_1 (" ", 0, NULL);
5266 do_spec_1 (multilib_dir, 1, NULL);
5267 do_spec_1 (" ", 0, NULL);
5272 do_spec_1 ("-imultiarch", 1, NULL);
5273 /* Make this a separate argument. */
5274 do_spec_1 (" ", 0, NULL);
5275 do_spec_1 (multiarch_dir, 1, NULL);
5276 do_spec_1 (" ", 0, NULL);
5279 if (gcc_exec_prefix)
5281 do_spec_1 ("-iprefix", 1, NULL);
5282 /* Make this a separate argument. */
5283 do_spec_1 (" ", 0, NULL);
5284 do_spec_1 (gcc_exec_prefix, 1, NULL);
5285 do_spec_1 (" ", 0, NULL);
5288 if (target_system_root_changed ||
5289 (target_system_root && target_sysroot_hdrs_suffix))
5291 do_spec_1 ("-isysroot", 1, NULL);
5292 /* Make this a separate argument. */
5293 do_spec_1 (" ", 0, NULL);
5294 do_spec_1 (target_system_root, 1, NULL);
5295 if (target_sysroot_hdrs_suffix)
5296 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
5297 do_spec_1 (" ", 0, NULL);
5300 info.option = "-isystem";
5301 info.append = "include";
5302 info.append_len = strlen (info.append);
5303 info.omit_relative = false;
5304 info.separate_options = true;
5306 for_each_path (&include_prefixes, false, info.append_len,
5309 info.append = "include-fixed";
5310 if (*sysroot_hdrs_suffix_spec)
5311 info.append = concat (info.append, dir_separator_str,
5312 multilib_dir, NULL);
5313 info.append_len = strlen (info.append);
5314 for_each_path (&include_prefixes, false, info.append_len,
5321 int max = n_infiles;
5322 max += lang_specific_extra_outfiles;
5324 if (HAVE_GNU_LD && at_file_supplied)
5326 /* We are going to expand `%o' to `@FILE', where FILE
5327 is a newly-created temporary filename. The filenames
5328 that would usually be expanded in place of %o will be
5329 written to the temporary file. */
5334 /* Convert OUTFILES into a form suitable for writeargv. */
5336 /* Determine how many are non-NULL. */
5337 for (n_files = 0, i = 0; i < max; i++)
5338 n_files += outfiles[i] != NULL;
5340 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
5342 /* Copy the strings over. */
5343 for (i = 0, j = 0; i < max; i++)
5346 argv[j] = CONST_CAST (char *, outfiles[i]);
5351 create_at_file (argv);
5354 for (i = 0; i < max; i++)
5356 store_arg (outfiles[i], 0, 0);
5361 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
5366 this_is_library_file = 1;
5370 this_is_linker_script = 1;
5374 outfiles[input_file_number] = NULL;
5378 this_is_output_file = 1;
5383 unsigned int cur_index = argbuf.length ();
5384 /* Handle the {...} following the %W. */
5386 fatal_error (input_location,
5387 "spec %qs has invalid %<%%W%c%>", spec, *p);
5388 p = handle_braces (p + 1);
5392 /* If any args were output, mark the last one for deletion
5394 if (argbuf.length () != cur_index)
5395 record_temp_file (argbuf.last (), 0, 1);
5399 /* %x{OPTION} records OPTION for %X to output. */
5407 /* Skip past the option value and make a copy. */
5409 fatal_error (input_location,
5410 "spec %qs has invalid %<%%x%c%>", spec, *p);
5413 string = save_string (p1 + 1, p - p1 - 2);
5415 /* See if we already recorded this option. */
5416 FOR_EACH_VEC_ELT (linker_options, ix, opt)
5417 if (! strcmp (string, opt))
5423 /* This option is new; add it. */
5424 add_linker_option (string, strlen (string));
5429 /* Dump out the options accumulated previously using %x. */
5431 do_specs_vec (linker_options);
5434 /* Dump out the options accumulated previously using -Wa,. */
5436 do_specs_vec (assembler_options);
5439 /* Dump out the options accumulated previously using -Wp,. */
5441 do_specs_vec (preprocessor_options);
5444 /* Here are digits and numbers that just process
5445 a certain constant string as a spec. */
5448 value = do_spec_1 (cc1_spec, 0, NULL);
5454 value = do_spec_1 (cc1plus_spec, 0, NULL);
5460 value = do_spec_1 (asm_spec, 0, NULL);
5466 value = do_spec_1 (asm_final_spec, 0, NULL);
5473 const char *const spec
5474 = (input_file_compiler->cpp_spec
5475 ? input_file_compiler->cpp_spec
5477 value = do_spec_1 (spec, 0, NULL);
5484 value = do_spec_1 (endfile_spec, 0, NULL);
5490 value = do_spec_1 (link_spec, 0, NULL);
5496 value = do_spec_1 (lib_spec, 0, NULL);
5502 if (multilib_os_dir == NULL)
5503 obstack_1grow (&obstack, '.');
5505 obstack_grow (&obstack, multilib_os_dir,
5506 strlen (multilib_os_dir));
5510 value = do_spec_1 (libgcc_spec, 0, NULL);
5516 /* We assume there is a directory
5517 separator at the end of this string. */
5518 if (target_system_root)
5520 obstack_grow (&obstack, target_system_root,
5521 strlen (target_system_root));
5522 if (target_sysroot_suffix)
5523 obstack_grow (&obstack, target_sysroot_suffix,
5524 strlen (target_sysroot_suffix));
5529 value = do_spec_1 (startfile_spec, 0, NULL);
5534 /* Here we define characters other than letters and digits. */
5537 p = handle_braces (p);
5543 p = handle_spec_function (p, NULL);
5549 obstack_1grow (&obstack, '%');
5556 while (p[len] && p[len] != ' ' && p[len] != '%')
5558 suffix_subst = save_string (p - 1, len + 1);
5563 /* Henceforth ignore the option(s) matching the pattern
5569 int have_wildcard = 0;
5574 switch_option = SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC;
5576 switch_option = SWITCH_IGNORE;
5578 while (p[len] && p[len] != ' ' && p[len] != '\t')
5581 if (p[len-1] == '*')
5584 for (i = 0; i < n_switches; i++)
5585 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5586 && (have_wildcard || switches[i].part1[len] == '\0'))
5588 switches[i].live_cond |= switch_option;
5589 /* User switch be validated from validate_all_switches.
5590 when the definition is seen from the spec file.
5591 If not defined anywhere, will be rejected. */
5592 if (switches[i].known)
5593 switches[i].validated = true;
5601 if (soft_matched_part)
5603 if (soft_matched_part[0])
5604 do_spec_1 (soft_matched_part, 1, NULL);
5605 /* Only insert a space after the substitution if it is at the
5606 end of the current sequence. So if:
5608 "%{foo=*:bar%*}%{foo=*:one%*two}"
5610 matches -foo=hello then it will produce:
5612 barhello onehellotwo
5614 if (*p == 0 || *p == '}')
5615 do_spec_1 (" ", 0, NULL);
5618 /* Catch the case where a spec string contains something like
5619 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5620 hand side of the :. */
5621 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5624 /* Process a string found as the value of a spec given by name.
5625 This feature allows individual machine descriptions
5626 to add and use their own specs. */
5629 const char *name = p;
5630 struct spec_list *sl;
5633 /* The string after the S/P is the name of a spec that is to be
5635 while (*p && *p != ')')
5638 /* See if it's in the list. */
5639 for (len = p - name, sl = specs; sl; sl = sl->next)
5640 if (sl->name_len == len && !strncmp (sl->name, name, len))
5642 name = *(sl->ptr_spec);
5644 fnotice (stderr, "Processing spec (%s), which is '%s'\n",
5652 value = do_spec_1 (name, 0, NULL);
5657 /* Discard the closing paren. */
5664 error ("spec failure: unrecognized spec option %qc", c);
5670 /* Backslash: treat next character as ordinary. */
5675 /* Ordinary character: put it into the current argument. */
5676 obstack_1grow (&obstack, c);
5680 /* End of string. If we are processing a spec function, we need to
5681 end any pending argument. */
5682 if (processing_spec_function)
5688 /* Look up a spec function. */
5690 static const struct spec_function *
5691 lookup_spec_function (const char *name)
5693 const struct spec_function *sf;
5695 for (sf = static_spec_functions; sf->name != NULL; sf++)
5696 if (strcmp (sf->name, name) == 0)
5702 /* Evaluate a spec function. */
5705 eval_spec_function (const char *func, const char *args)
5707 const struct spec_function *sf;
5708 const char *funcval;
5710 /* Saved spec processing context. */
5711 vec<const_char_p> save_argbuf;
5714 int save_delete_this_arg;
5715 int save_this_is_output_file;
5716 int save_this_is_library_file;
5717 int save_input_from_pipe;
5718 int save_this_is_linker_script;
5719 const char *save_suffix_subst;
5721 int save_growing_size;
5722 void *save_growing_value = NULL;
5724 sf = lookup_spec_function (func);
5726 fatal_error (input_location, "unknown spec function %qs", func);
5728 /* Push the spec processing context. */
5729 save_argbuf = argbuf;
5731 save_arg_going = arg_going;
5732 save_delete_this_arg = delete_this_arg;
5733 save_this_is_output_file = this_is_output_file;
5734 save_this_is_library_file = this_is_library_file;
5735 save_this_is_linker_script = this_is_linker_script;
5736 save_input_from_pipe = input_from_pipe;
5737 save_suffix_subst = suffix_subst;
5739 /* If we have some object growing now, finalize it so the args and function
5740 eval proceed from a cleared context. This is needed to prevent the first
5741 constructed arg from mistakenly including the growing value. We'll push
5742 this value back on the obstack once the function evaluation is done, to
5743 restore a consistent processing context for our caller. This is fine as
5744 the address of growing objects isn't guaranteed to remain stable until
5745 they are finalized, and we expect this situation to be rare enough for
5746 the extra copy not to be an issue. */
5747 save_growing_size = obstack_object_size (&obstack);
5748 if (save_growing_size > 0)
5749 save_growing_value = obstack_finish (&obstack);
5751 /* Create a new spec processing context, and build the function
5755 if (do_spec_2 (args) < 0)
5756 fatal_error (input_location, "error in args to spec function %qs", func);
5758 /* argbuf_index is an index for the next argument to be inserted, and
5759 so contains the count of the args already inserted. */
5761 funcval = (*sf->func) (argbuf.length (),
5764 /* Pop the spec processing context. */
5766 argbuf = save_argbuf;
5768 arg_going = save_arg_going;
5769 delete_this_arg = save_delete_this_arg;
5770 this_is_output_file = save_this_is_output_file;
5771 this_is_library_file = save_this_is_library_file;
5772 this_is_linker_script = save_this_is_linker_script;
5773 input_from_pipe = save_input_from_pipe;
5774 suffix_subst = save_suffix_subst;
5776 if (save_growing_size > 0)
5777 obstack_grow (&obstack, save_growing_value, save_growing_size);
5782 /* Handle a spec function call of the form:
5786 ARGS is processed as a spec in a separate context and split into an
5787 argument vector in the normal fashion. The function returns a string
5788 containing a spec which we then process in the caller's context, or
5789 NULL if no processing is required.
5791 If RETVAL_NONNULL is not NULL, then store a bool whether function
5792 returned non-NULL. */
5795 handle_spec_function (const char *p, bool *retval_nonnull)
5798 const char *endp, *funcval;
5801 processing_spec_function++;
5803 /* Get the function name. */
5804 for (endp = p; *endp != '\0'; endp++)
5806 if (*endp == '(') /* ) */
5808 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5809 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5810 fatal_error (input_location, "malformed spec function name");
5812 if (*endp != '(') /* ) */
5813 fatal_error (input_location, "no arguments for spec function");
5814 func = save_string (p, endp - p);
5817 /* Get the arguments. */
5818 for (count = 0; *endp != '\0'; endp++)
5827 else if (*endp == '(') /* ) */
5832 fatal_error (input_location, "malformed spec function arguments");
5833 args = save_string (p, endp - p);
5836 /* p now points to just past the end of the spec function expression. */
5838 funcval = eval_spec_function (func, args);
5839 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5842 *retval_nonnull = funcval != NULL;
5847 processing_spec_function--;
5852 /* Inline subroutine of handle_braces. Returns true if the current
5853 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5855 input_suffix_matches (const char *atom, const char *end_atom)
5857 return (input_suffix
5858 && !strncmp (input_suffix, atom, end_atom - atom)
5859 && input_suffix[end_atom - atom] == '\0');
5862 /* Subroutine of handle_braces. Returns true if the current
5863 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5865 input_spec_matches (const char *atom, const char *end_atom)
5867 return (input_file_compiler
5868 && input_file_compiler->suffix
5869 && input_file_compiler->suffix[0] != '\0'
5870 && !strncmp (input_file_compiler->suffix + 1, atom,
5872 && input_file_compiler->suffix[end_atom - atom + 1] == '\0');
5875 /* Subroutine of handle_braces. Returns true if a switch
5876 matching the atom bracketed by ATOM and END_ATOM appeared on the
5879 switch_matches (const char *atom, const char *end_atom, int starred)
5882 int len = end_atom - atom;
5883 int plen = starred ? len : -1;
5885 for (i = 0; i < n_switches; i++)
5886 if (!strncmp (switches[i].part1, atom, len)
5887 && (starred || switches[i].part1[len] == '\0')
5888 && check_live_switch (i, plen))
5891 /* Check if a switch with separated form matching the atom.
5892 We check -D and -U switches. */
5893 else if (switches[i].args != 0)
5895 if ((*switches[i].part1 == 'D' || *switches[i].part1 == 'U')
5896 && *switches[i].part1 == atom[0])
5898 if (!strncmp (switches[i].args[0], &atom[1], len - 1)
5899 && (starred || (switches[i].part1[1] == '\0'
5900 && switches[i].args[0][len - 1] == '\0'))
5901 && check_live_switch (i, (starred ? 1 : -1)))
5909 /* Inline subroutine of handle_braces. Mark all of the switches which
5910 match ATOM (extends to END_ATOM; STARRED indicates whether there
5911 was a star after the atom) for later processing. */
5913 mark_matching_switches (const char *atom, const char *end_atom, int starred)
5916 int len = end_atom - atom;
5917 int plen = starred ? len : -1;
5919 for (i = 0; i < n_switches; i++)
5920 if (!strncmp (switches[i].part1, atom, len)
5921 && (starred || switches[i].part1[len] == '\0')
5922 && check_live_switch (i, plen))
5923 switches[i].ordering = 1;
5926 /* Inline subroutine of handle_braces. Process all the currently
5927 marked switches through give_switch, and clear the marks. */
5929 process_marked_switches (void)
5933 for (i = 0; i < n_switches; i++)
5934 if (switches[i].ordering == 1)
5936 switches[i].ordering = 0;
5941 /* Handle a %{ ... } construct. P points just inside the leading {.
5942 Returns a pointer one past the end of the brace block, or 0
5943 if we call do_spec_1 and that returns -1. */
5946 handle_braces (const char *p)
5948 const char *atom, *end_atom;
5949 const char *d_atom = NULL, *d_end_atom = NULL;
5950 const char *orig = p;
5958 bool a_must_be_last = false;
5959 bool ordered_set = false;
5960 bool disjunct_set = false;
5961 bool disj_matched = false;
5962 bool disj_starred = true;
5963 bool n_way_choice = false;
5964 bool n_way_matched = false;
5966 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5973 /* Scan one "atom" (S in the description above of %{}, possibly
5974 with '!', '.', '@', ',', or '*' modifiers). */
5976 a_is_suffix = false;
5977 a_is_starred = false;
5978 a_is_negated = false;
5979 a_is_spectype = false;
5983 p++, a_is_negated = true;
5986 if (*p == '%' && p[1] == ':')
5990 p = handle_spec_function (p + 2, &a_matched);
5995 p++, a_is_suffix = true;
5997 p++, a_is_spectype = true;
6000 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
6001 || *p == ',' || *p == '.' || *p == '@')
6006 p++, a_is_starred = 1;
6013 /* Substitute the switch(es) indicated by the current atom. */
6015 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
6016 || a_is_spectype || atom == end_atom)
6019 mark_matching_switches (atom, end_atom, a_is_starred);
6022 process_marked_switches ();
6026 /* Substitute some text if the current atom appears as a switch
6028 disjunct_set = true;
6032 if (atom && atom == end_atom)
6034 if (!n_way_choice || disj_matched || *p == '|'
6035 || a_is_negated || a_is_suffix || a_is_spectype
6039 /* An empty term may appear as the last choice of an
6040 N-way choice set; it means "otherwise". */
6041 a_must_be_last = true;
6042 disj_matched = !n_way_matched;
6043 disj_starred = false;
6047 if ((a_is_suffix || a_is_spectype) && a_is_starred)
6051 disj_starred = false;
6053 /* Don't bother testing this atom if we already have a
6055 if (!disj_matched && !n_way_matched)
6058 /* a_matched is already set by handle_spec_function. */;
6059 else if (a_is_suffix)
6060 a_matched = input_suffix_matches (atom, end_atom);
6061 else if (a_is_spectype)
6062 a_matched = input_spec_matches (atom, end_atom);
6064 a_matched = switch_matches (atom, end_atom, a_is_starred);
6066 if (a_matched != a_is_negated)
6068 disj_matched = true;
6070 d_end_atom = end_atom;
6077 /* Found the body, that is, the text to substitute if the
6078 current disjunction matches. */
6079 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
6080 disj_matched && !n_way_matched);
6084 /* If we have an N-way choice, reset state for the next
6088 n_way_choice = true;
6089 n_way_matched |= disj_matched;
6090 disj_matched = false;
6091 disj_starred = true;
6092 d_atom = d_end_atom = NULL;
6101 while (*p++ != '}');
6106 fatal_error (input_location, "braced spec %qs is invalid at %qc", orig, *p);
6111 /* Subroutine of handle_braces. Scan and process a brace substitution body
6112 (X in the description of %{} syntax). P points one past the colon;
6113 ATOM and END_ATOM bracket the first atom which was found to be true
6114 (present) in the current disjunction; STARRED indicates whether all
6115 the atoms in the current disjunction were starred (for syntax validation);
6116 MATCHED indicates whether the disjunction matched or not, and therefore
6117 whether or not the body is to be processed through do_spec_1 or just
6118 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
6122 process_brace_body (const char *p, const char *atom, const char *end_atom,
6123 int starred, int matched)
6125 const char *body, *end_body;
6126 unsigned int nesting_level;
6127 bool have_subst = false;
6129 /* Locate the closing } or ;, honoring nested braces.
6130 Trim trailing whitespace. */
6139 if (!--nesting_level)
6142 else if (*p == ';' && nesting_level == 1)
6144 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
6146 else if (*p == '\0')
6152 while (end_body[-1] == ' ' || end_body[-1] == '\t')
6155 if (have_subst && !starred)
6160 /* Copy the substitution body to permanent storage and execute it.
6161 If have_subst is false, this is a simple matter of running the
6162 body through do_spec_1... */
6163 char *string = save_string (body, end_body - body);
6166 if (do_spec_1 (string, 0, NULL) < 0)
6171 /* ... but if have_subst is true, we have to process the
6172 body once for each matching switch, with %* set to the
6173 variant part of the switch. */
6174 unsigned int hard_match_len = end_atom - atom;
6177 for (i = 0; i < n_switches; i++)
6178 if (!strncmp (switches[i].part1, atom, hard_match_len)
6179 && check_live_switch (i, hard_match_len))
6181 if (do_spec_1 (string, 0,
6182 &switches[i].part1[hard_match_len]) < 0)
6184 /* Pass any arguments this switch has. */
6186 suffix_subst = NULL;
6194 fatal_error (input_location, "braced spec body %qs is invalid", body);
6197 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
6198 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
6199 spec, or -1 if either exact match or %* is used.
6201 A -O switch is obsoleted by a later -O switch. A -f, -g, -m, or -W switch
6202 whose value does not begin with "no-" is obsoleted by the same value
6203 with the "no-", similarly for a switch with the "no-" prefix. */
6206 check_live_switch (int switchnum, int prefix_length)
6208 const char *name = switches[switchnum].part1;
6211 /* If we already processed this switch and determined if it was
6212 live or not, return our past determination. */
6213 if (switches[switchnum].live_cond != 0)
6214 return ((switches[switchnum].live_cond & SWITCH_LIVE) != 0
6215 && (switches[switchnum].live_cond & SWITCH_FALSE) == 0
6216 && (switches[switchnum].live_cond & SWITCH_IGNORE_PERMANENTLY)
6219 /* In the common case of {<at-most-one-letter>*}, a negating
6220 switch would always match, so ignore that case. We will just
6221 send the conflicting switches to the compiler phase. */
6222 if (prefix_length >= 0 && prefix_length <= 1)
6225 /* Now search for duplicate in a manner that depends on the name. */
6229 for (i = switchnum + 1; i < n_switches; i++)
6230 if (switches[i].part1[0] == 'O')
6232 switches[switchnum].validated = true;
6233 switches[switchnum].live_cond = SWITCH_FALSE;
6238 case 'W': case 'f': case 'm': case 'g':
6239 if (! strncmp (name + 1, "no-", 3))
6241 /* We have Xno-YYY, search for XYYY. */
6242 for (i = switchnum + 1; i < n_switches; i++)
6243 if (switches[i].part1[0] == name[0]
6244 && ! strcmp (&switches[i].part1[1], &name[4]))
6246 /* --specs are validated with the validate_switches mechanism. */
6247 if (switches[switchnum].known)
6248 switches[switchnum].validated = true;
6249 switches[switchnum].live_cond = SWITCH_FALSE;
6255 /* We have XYYY, search for Xno-YYY. */
6256 for (i = switchnum + 1; i < n_switches; i++)
6257 if (switches[i].part1[0] == name[0]
6258 && switches[i].part1[1] == 'n'
6259 && switches[i].part1[2] == 'o'
6260 && switches[i].part1[3] == '-'
6261 && !strcmp (&switches[i].part1[4], &name[1]))
6263 /* --specs are validated with the validate_switches mechanism. */
6264 if (switches[switchnum].known)
6265 switches[switchnum].validated = true;
6266 switches[switchnum].live_cond = SWITCH_FALSE;
6273 /* Otherwise the switch is live. */
6274 switches[switchnum].live_cond |= SWITCH_LIVE;
6278 /* Pass a switch to the current accumulating command
6279 in the same form that we received it.
6280 SWITCHNUM identifies the switch; it is an index into
6281 the vector of switches gcc received, which is `switches'.
6282 This cannot fail since it never finishes a command line.
6284 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
6287 give_switch (int switchnum, int omit_first_word)
6289 if ((switches[switchnum].live_cond & SWITCH_IGNORE) != 0)
6292 if (!omit_first_word)
6294 do_spec_1 ("-", 0, NULL);
6295 do_spec_1 (switches[switchnum].part1, 1, NULL);
6298 if (switches[switchnum].args != 0)
6301 for (p = switches[switchnum].args; *p; p++)
6303 const char *arg = *p;
6305 do_spec_1 (" ", 0, NULL);
6308 unsigned length = strlen (arg);
6311 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
6312 if (arg[length] == '.')
6314 (CONST_CAST (char *, arg))[length] = 0;
6318 do_spec_1 (arg, 1, NULL);
6320 (CONST_CAST (char *, arg))[length] = '.';
6321 do_spec_1 (suffix_subst, 1, NULL);
6324 do_spec_1 (arg, 1, NULL);
6328 do_spec_1 (" ", 0, NULL);
6329 switches[switchnum].validated = true;
6332 /* Print GCC configuration (e.g. version, thread model, target,
6333 configuration_arguments) to a given FILE. */
6336 print_configuration (FILE *file)
6341 fnotice (file, "Target: %s\n", spec_machine);
6342 fnotice (file, "Configured with: %s\n", configuration_arguments);
6344 #ifdef THREAD_MODEL_SPEC
6345 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6346 but there's no point in doing all this processing just to get
6347 thread_model back. */
6348 obstack_init (&obstack);
6349 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6350 obstack_1grow (&obstack, '\0');
6351 thrmod = XOBFINISH (&obstack, const char *);
6353 thrmod = thread_model;
6356 fnotice (file, "Thread model: %s\n", thrmod);
6358 /* compiler_version is truncated at the first space when initialized
6359 from version string, so truncate version_string at the first space
6360 before comparing. */
6361 for (n = 0; version_string[n]; n++)
6362 if (version_string[n] == ' ')
6365 if (! strncmp (version_string, compiler_version, n)
6366 && compiler_version[n] == 0)
6367 fnotice (file, "gcc version %s %s\n", version_string,
6370 fnotice (file, "gcc driver version %s %sexecuting gcc version %s\n",
6371 version_string, pkgversion_string, compiler_version);
6375 #define RETRY_ICE_ATTEMPTS 3
6377 /* Returns true if FILE1 and FILE2 contain equivalent data, 0 otherwise. */
6380 files_equal_p (char *file1, char *file2)
6382 struct stat st1, st2;
6385 const int bufsize = 8192;
6386 char *buf = XNEWVEC (char, bufsize);
6388 fd1 = open (file1, O_RDONLY);
6389 fd2 = open (file2, O_RDONLY);
6391 if (fd1 < 0 || fd2 < 0)
6394 if (fstat (fd1, &st1) < 0 || fstat (fd2, &st2) < 0)
6397 if (st1.st_size != st2.st_size)
6400 for (n = st1.st_size; n; n -= len)
6403 if ((int) len > bufsize / 2)
6406 if (read (fd1, buf, len) != (int) len
6407 || read (fd2, buf + bufsize / 2, len) != (int) len)
6412 if (memcmp (buf, buf + bufsize / 2, len) != 0)
6429 /* Check that compiler's output doesn't differ across runs.
6430 TEMP_STDOUT_FILES and TEMP_STDERR_FILES are arrays of files, containing
6431 stdout and stderr for each compiler run. Return true if all of
6432 TEMP_STDOUT_FILES and TEMP_STDERR_FILES are equivalent. */
6435 check_repro (char **temp_stdout_files, char **temp_stderr_files)
6438 for (i = 0; i < RETRY_ICE_ATTEMPTS - 2; ++i)
6440 if (!files_equal_p (temp_stdout_files[i], temp_stdout_files[i + 1])
6441 || !files_equal_p (temp_stderr_files[i], temp_stderr_files[i + 1]))
6443 fnotice (stderr, "The bug is not reproducible, so it is"
6444 " likely a hardware or OS problem.\n");
6448 return i == RETRY_ICE_ATTEMPTS - 2;
6451 enum attempt_status {
6452 ATTEMPT_STATUS_FAIL_TO_RUN,
6453 ATTEMPT_STATUS_SUCCESS,
6458 /* Run compiler with arguments NEW_ARGV to reproduce the ICE, storing stdout
6459 to OUT_TEMP and stderr to ERR_TEMP. If APPEND is TRUE, append to OUT_TEMP
6460 and ERR_TEMP instead of truncating. If EMIT_SYSTEM_INFO is TRUE, also write
6461 GCC configuration into to ERR_TEMP. Return ATTEMPT_STATUS_FAIL_TO_RUN if
6462 compiler failed to run, ATTEMPT_STATUS_ICE if compiled ICE-ed and
6463 ATTEMPT_STATUS_SUCCESS otherwise. */
6465 static enum attempt_status
6466 run_attempt (const char **new_argv, const char *out_temp,
6467 const char *err_temp, int emit_system_info, int append)
6470 if (emit_system_info)
6472 FILE *file_out = fopen (err_temp, "a");
6473 print_configuration (file_out);
6474 fputs ("\n", file_out);
6480 struct pex_obj *pex;
6482 int pex_flags = PEX_USE_PIPES | PEX_LAST;
6483 enum attempt_status status = ATTEMPT_STATUS_FAIL_TO_RUN;
6486 pex_flags |= PEX_STDOUT_APPEND | PEX_STDERR_APPEND;
6488 pex = pex_init (PEX_USE_PIPES, new_argv[0], NULL);
6490 fatal_error (input_location, "pex_init failed: %m");
6492 errmsg = pex_run (pex, pex_flags, new_argv[0],
6493 CONST_CAST2 (char *const *, const char **, &new_argv[1]), out_temp,
6498 fatal_error (input_location, errmsg);
6502 pfatal_with_name (errmsg);
6506 if (!pex_get_status (pex, 1, &exit_status))
6509 switch (WEXITSTATUS (exit_status))
6512 status = ATTEMPT_STATUS_ICE;
6515 case SUCCESS_EXIT_CODE:
6516 status = ATTEMPT_STATUS_SUCCESS;
6528 /* This routine reads lines from IN file, adds C++ style comments
6529 at the begining of each line and writes result into OUT. */
6532 insert_comments (const char *file_in, const char *file_out)
6534 FILE *in = fopen (file_in, "rb");
6535 FILE *out = fopen (file_out, "wb");
6538 bool add_comment = true;
6539 while (fgets (line, sizeof (line), in))
6544 add_comment = strchr (line, '\n') != NULL;
6551 /* This routine adds preprocessed source code into the given ERR_FILE.
6552 To do this, it adds "-E" to NEW_ARGV and execute RUN_ATTEMPT routine to
6553 add information in report file. RUN_ATTEMPT should return
6554 ATTEMPT_STATUS_SUCCESS, in other case we cannot generate the report. */
6557 do_report_bug (const char **new_argv, const int nargs,
6558 char **out_file, char **err_file)
6561 int fd = open (*out_file, O_RDWR | O_APPEND);
6564 write (fd, "\n//", 3);
6565 for (i = 0; i < nargs; i++)
6568 write (fd, new_argv[i], strlen (new_argv[i]));
6570 write (fd, "\n\n", 2);
6572 new_argv[nargs] = "-E";
6573 new_argv[nargs + 1] = NULL;
6575 status = run_attempt (new_argv, *out_file, *err_file, 0, 1);
6577 if (status == ATTEMPT_STATUS_SUCCESS)
6579 fnotice (stderr, "Preprocessed source stored into %s file,"
6580 " please attach this to your bugreport.\n", *out_file);
6581 /* Make sure it is not deleted. */
6587 /* Try to reproduce ICE. If bug is reproducible, generate report .err file
6588 containing GCC configuration, backtrace, compiler's command line options
6589 and preprocessed source code. */
6592 try_generate_repro (const char **argv)
6594 int i, nargs, out_arg = -1, quiet = 0, attempt;
6595 const char **new_argv;
6596 char *temp_files[RETRY_ICE_ATTEMPTS * 2];
6597 char **temp_stdout_files = &temp_files[0];
6598 char **temp_stderr_files = &temp_files[RETRY_ICE_ATTEMPTS];
6600 if (gcc_input_filename == NULL || ! strcmp (gcc_input_filename, "-"))
6603 for (nargs = 0; argv[nargs] != NULL; ++nargs)
6604 /* Only retry compiler ICEs, not preprocessor ones. */
6605 if (! strcmp (argv[nargs], "-E"))
6607 else if (argv[nargs][0] == '-' && argv[nargs][1] == 'o')
6614 /* If the compiler is going to output any time information,
6615 it might varry between invocations. */
6616 else if (! strcmp (argv[nargs], "-quiet"))
6618 else if (! strcmp (argv[nargs], "-ftime-report"))
6621 if (out_arg == -1 || !quiet)
6624 memset (temp_files, '\0', sizeof (temp_files));
6625 new_argv = XALLOCAVEC (const char *, nargs + 4);
6626 memcpy (new_argv, argv, (nargs + 1) * sizeof (const char *));
6627 new_argv[nargs++] = "-frandom-seed=0";
6628 new_argv[nargs++] = "-fdump-noaddr";
6629 new_argv[nargs] = NULL;
6630 if (new_argv[out_arg][2] == '\0')
6631 new_argv[out_arg + 1] = "-";
6633 new_argv[out_arg] = "-o-";
6636 for (attempt = 0; attempt < RETRY_ICE_ATTEMPTS; ++attempt)
6638 int emit_system_info = 0;
6640 temp_stdout_files[attempt] = make_temp_file (".out");
6641 temp_stderr_files[attempt] = make_temp_file (".err");
6643 if (attempt == RETRY_ICE_ATTEMPTS - 1)
6646 emit_system_info = 1;
6649 status = run_attempt (new_argv, temp_stdout_files[attempt],
6650 temp_stderr_files[attempt], emit_system_info,
6653 if (status != ATTEMPT_STATUS_ICE)
6655 fnotice (stderr, "The bug is not reproducible, so it is"
6656 " likely a hardware or OS problem.\n");
6661 if (!check_repro (temp_stdout_files, temp_stderr_files))
6665 /* Insert commented out backtrace into report file. */
6666 char **stderr_commented = &temp_stdout_files[RETRY_ICE_ATTEMPTS - 1];
6667 insert_comments (temp_stderr_files[RETRY_ICE_ATTEMPTS - 1],
6670 /* In final attempt we append compiler options and preprocesssed code to last
6671 generated .out file with configuration and backtrace. */
6672 char **output = &temp_stdout_files[RETRY_ICE_ATTEMPTS - 1];
6673 do_report_bug (new_argv, nargs, stderr_commented, output);
6677 for (i = 0; i < RETRY_ICE_ATTEMPTS * 2; i++)
6680 unlink (temp_stdout_files[i]);
6681 free (temp_stdout_files[i]);
6685 /* Search for a file named NAME trying various prefixes including the
6686 user's -B prefix and some standard ones.
6687 Return the absolute file name found. If nothing is found, return NAME. */
6690 find_file (const char *name)
6692 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true);
6693 return newname ? newname : name;
6696 /* Determine whether a directory exists. If LINKER, return 0 for
6697 certain fixed names not needed by the linker. */
6700 is_directory (const char *path1, bool linker)
6707 /* Ensure the string ends with "/.". The resulting path will be a
6708 directory even if the given path is a symbolic link. */
6709 len1 = strlen (path1);
6710 path = (char *) alloca (3 + len1);
6711 memcpy (path, path1, len1);
6713 if (!IS_DIR_SEPARATOR (cp[-1]))
6714 *cp++ = DIR_SEPARATOR;
6718 /* Exclude directories that the linker is known to search. */
6720 && IS_DIR_SEPARATOR (path[0])
6722 && filename_ncmp (path + 1, "lib", 3) == 0)
6724 && filename_ncmp (path + 1, "usr", 3) == 0
6725 && IS_DIR_SEPARATOR (path[4])
6726 && filename_ncmp (path + 5, "lib", 3) == 0)))
6729 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
6732 /* Set up the various global variables to indicate that we're processing
6733 the input file named FILENAME. */
6736 set_input (const char *filename)
6740 gcc_input_filename = filename;
6741 input_filename_length = strlen (gcc_input_filename);
6742 input_basename = lbasename (gcc_input_filename);
6744 /* Find a suffix starting with the last period,
6745 and set basename_length to exclude that suffix. */
6746 basename_length = strlen (input_basename);
6747 suffixed_basename_length = basename_length;
6748 p = input_basename + basename_length;
6749 while (p != input_basename && *p != '.')
6751 if (*p == '.' && p != input_basename)
6753 basename_length = p - input_basename;
6754 input_suffix = p + 1;
6759 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
6760 we will need to do a stat on the gcc_input_filename. The
6761 INPUT_STAT_SET signals that the stat is needed. */
6765 /* On fatal signals, delete all the temporary files. */
6768 fatal_signal (int signum)
6770 signal (signum, SIG_DFL);
6771 delete_failure_queue ();
6772 delete_temp_files ();
6773 /* Get the same signal again, this time not handled,
6774 so its normal effect occurs. */
6775 kill (getpid (), signum);
6778 /* Compare the contents of the two files named CMPFILE[0] and
6779 CMPFILE[1]. Return zero if they're identical, nonzero
6783 compare_files (char *cmpfile[])
6786 FILE *temp[2] = { NULL, NULL };
6792 void *map[2] = { NULL, NULL };
6794 for (i = 0; i < 2; i++)
6798 if (stat (cmpfile[i], &st) < 0 || !S_ISREG (st.st_mode))
6800 error ("%s: could not determine length of compare-debug file %s",
6801 gcc_input_filename, cmpfile[i]);
6806 length[i] = st.st_size;
6809 if (!ret && length[0] != length[1])
6811 error ("%s: -fcompare-debug failure (length)", gcc_input_filename);
6816 for (i = 0; i < 2; i++)
6818 int fd = open (cmpfile[i], O_RDONLY);
6821 error ("%s: could not open compare-debug file %s",
6822 gcc_input_filename, cmpfile[i]);
6827 map[i] = mmap (NULL, length[i], PROT_READ, MAP_PRIVATE, fd, 0);
6830 if (map[i] == (void *) MAP_FAILED)
6839 if (memcmp (map[0], map[1], length[0]) != 0)
6841 error ("%s: -fcompare-debug failure", gcc_input_filename);
6846 for (i = 0; i < 2; i++)
6848 munmap ((caddr_t) map[i], length[i]);
6857 for (i = 0; i < 2; i++)
6859 temp[i] = fopen (cmpfile[i], "r");
6862 error ("%s: could not open compare-debug file %s",
6863 gcc_input_filename, cmpfile[i]);
6869 if (!ret && temp[0] && temp[1])
6873 c0 = fgetc (temp[0]);
6874 c1 = fgetc (temp[1]);
6878 error ("%s: -fcompare-debug failure",
6879 gcc_input_filename);
6888 for (i = 1; i >= 0; i--)
6897 /* The top-level "main" within the driver would be ~1000 lines long.
6898 This class breaks it up into smaller functions and contains some
6899 state shared by them. */
6904 int main (int argc, char **argv);
6907 void set_progname (const char *argv0) const;
6908 void expand_at_files (int *argc, char ***argv) const;
6909 void decode_argv (int argc, const char **argv);
6910 void global_initializations ();
6911 void build_multilib_strings () const;
6912 void set_up_specs () const;
6913 void putenv_COLLECT_GCC (const char *argv0) const;
6914 void maybe_putenv_COLLECT_LTO_WRAPPER () const;
6915 void maybe_putenv_OFFLOAD_TARGETS () const;
6916 void handle_unrecognized_options () const;
6917 int maybe_print_and_exit () const;
6918 bool prepare_infiles ();
6919 void do_spec_on_infiles () const;
6920 void maybe_run_linker (const char *argv0) const;
6921 void final_actions () const;
6922 int get_exit_code () const;
6925 char *explicit_link_files;
6926 struct cl_decoded_option *decoded_options;
6927 unsigned int decoded_options_count;
6930 /* Implement the top-level "main" within the driver in terms of
6933 extern int main (int, char **);
6936 main (int argc, char **argv)
6940 return d.main (argc, argv);
6943 /* driver::main is implemented as a series of driver:: method calls. */
6946 driver::main (int argc, char **argv)
6950 set_progname (argv[0]);
6951 expand_at_files (&argc, &argv);
6952 decode_argv (argc, const_cast <const char **> (argv));
6953 global_initializations ();
6954 build_multilib_strings ();
6956 putenv_COLLECT_GCC (argv[0]);
6957 maybe_putenv_COLLECT_LTO_WRAPPER ();
6958 maybe_putenv_OFFLOAD_TARGETS ();
6959 handle_unrecognized_options ();
6961 if (!maybe_print_and_exit ())
6964 early_exit = prepare_infiles ();
6966 return get_exit_code ();
6968 do_spec_on_infiles ();
6969 maybe_run_linker (argv[0]);
6971 return get_exit_code ();
6974 /* Locate the final component of argv[0] after any leading path, and set
6975 the program name accordingly. */
6978 driver::set_progname (const char *argv0) const
6980 const char *p = argv0 + strlen (argv0);
6981 while (p != argv0 && !IS_DIR_SEPARATOR (p[-1]))
6985 xmalloc_set_program_name (progname);
6988 /* Expand any @ files within the command-line args,
6989 setting at_file_supplied if any were expanded. */
6992 driver::expand_at_files (int *argc, char ***argv) const
6994 char **old_argv = *argv;
6996 expandargv (argc, argv);
6998 /* Determine if any expansions were made. */
6999 if (*argv != old_argv)
7000 at_file_supplied = true;
7003 /* Decode the command-line arguments from argc/argv into the
7004 decoded_options array. */
7007 driver::decode_argv (int argc, const char **argv)
7009 /* Register the language-independent parameters. */
7010 global_init_params ();
7013 init_options_struct (&global_options, &global_options_set);
7015 decode_cmdline_options_to_array (argc, argv,
7017 &decoded_options, &decoded_options_count);
7020 /* Perform various initializations and setup. */
7023 driver::global_initializations ()
7025 /* Unlock the stdio streams. */
7026 unlock_std_streams ();
7028 gcc_init_libintl ();
7030 diagnostic_initialize (global_dc, 0);
7031 diagnostic_color_init (global_dc);
7033 #ifdef GCC_DRIVER_HOST_INITIALIZATION
7034 /* Perform host dependent initialization when needed. */
7035 GCC_DRIVER_HOST_INITIALIZATION;
7038 if (atexit (delete_temp_files) != 0)
7039 fatal_error (input_location, "atexit failed");
7041 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
7042 signal (SIGINT, fatal_signal);
7044 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
7045 signal (SIGHUP, fatal_signal);
7047 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
7048 signal (SIGTERM, fatal_signal);
7050 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
7051 signal (SIGPIPE, fatal_signal);
7054 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
7055 receive the signal. A different setting is inheritable */
7056 signal (SIGCHLD, SIG_DFL);
7059 /* Parsing and gimplification sometimes need quite large stack.
7060 Increase stack size limits if possible. */
7061 stack_limit_increase (64 * 1024 * 1024);
7063 /* Allocate the argument vector. */
7066 obstack_init (&obstack);
7069 /* Build multilib_select, et. al from the separate lines that make up each
7070 multilib selection. */
7073 driver::build_multilib_strings () const
7077 const char *const *q = multilib_raw;
7080 obstack_init (&multilib_obstack);
7081 while ((p = *q++) != (char *) 0)
7082 obstack_grow (&multilib_obstack, p, strlen (p));
7084 obstack_1grow (&multilib_obstack, 0);
7085 multilib_select = XOBFINISH (&multilib_obstack, const char *);
7087 q = multilib_matches_raw;
7088 while ((p = *q++) != (char *) 0)
7089 obstack_grow (&multilib_obstack, p, strlen (p));
7091 obstack_1grow (&multilib_obstack, 0);
7092 multilib_matches = XOBFINISH (&multilib_obstack, const char *);
7094 q = multilib_exclusions_raw;
7095 while ((p = *q++) != (char *) 0)
7096 obstack_grow (&multilib_obstack, p, strlen (p));
7098 obstack_1grow (&multilib_obstack, 0);
7099 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *);
7101 q = multilib_reuse_raw;
7102 while ((p = *q++) != (char *) 0)
7103 obstack_grow (&multilib_obstack, p, strlen (p));
7105 obstack_1grow (&multilib_obstack, 0);
7106 multilib_reuse = XOBFINISH (&multilib_obstack, const char *);
7109 for (size_t i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
7112 obstack_1grow (&multilib_obstack, ' ');
7113 obstack_grow (&multilib_obstack,
7114 multilib_defaults_raw[i],
7115 strlen (multilib_defaults_raw[i]));
7119 obstack_1grow (&multilib_obstack, 0);
7120 multilib_defaults = XOBFINISH (&multilib_obstack, const char *);
7124 /* Set up the spec-handling machinery. */
7127 driver::set_up_specs () const
7129 const char *spec_machine_suffix;
7133 #ifdef INIT_ENVIRONMENT
7134 /* Set up any other necessary machine specific environment variables. */
7135 xputenv (INIT_ENVIRONMENT);
7138 /* Make a table of what switches there are (switches, n_switches).
7139 Make a table of specified input files (infiles, n_infiles).
7140 Decode switches that are handled locally. */
7142 process_command (decoded_options_count, decoded_options);
7144 /* Initialize the vector of specs to just the default.
7145 This means one element containing 0s, as a terminator. */
7147 compilers = XNEWVAR (struct compiler, sizeof default_compilers);
7148 memcpy (compilers, default_compilers, sizeof default_compilers);
7149 n_compilers = n_default_compilers;
7151 /* Read specs from a file if there is one. */
7153 machine_suffix = concat (spec_host_machine, dir_separator_str, spec_version,
7154 accel_dir_suffix, dir_separator_str, NULL);
7155 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
7157 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true);
7158 /* Read the specs file unless it is a default one. */
7159 if (specs_file != 0 && strcmp (specs_file, "specs"))
7160 read_specs (specs_file, true, false);
7164 #ifdef ACCEL_COMPILER
7165 spec_machine_suffix = machine_suffix;
7167 spec_machine_suffix = just_machine_suffix;
7170 /* We need to check standard_exec_prefix/spec_machine_suffix/specs
7171 for any override of as, ld and libraries. */
7172 specs_file = (char *) alloca (strlen (standard_exec_prefix)
7173 + strlen (spec_machine_suffix) + sizeof ("specs"));
7174 strcpy (specs_file, standard_exec_prefix);
7175 strcat (specs_file, spec_machine_suffix);
7176 strcat (specs_file, "specs");
7177 if (access (specs_file, R_OK) == 0)
7178 read_specs (specs_file, true, false);
7180 /* Process any configure-time defaults specified for the command line
7181 options, via OPTION_DEFAULT_SPECS. */
7182 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
7183 do_option_spec (option_default_specs[i].name,
7184 option_default_specs[i].spec);
7186 /* Process DRIVER_SELF_SPECS, adding any new options to the end
7187 of the command line. */
7189 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
7190 do_self_spec (driver_self_specs[i]);
7192 /* If not cross-compiling, look for executables in the standard
7194 if (*cross_compile == '0')
7196 if (*md_exec_prefix)
7198 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
7199 PREFIX_PRIORITY_LAST, 0, 0);
7203 /* Process sysroot_suffix_spec. */
7204 if (*sysroot_suffix_spec != 0
7205 && !no_sysroot_suffix
7206 && do_spec_2 (sysroot_suffix_spec) == 0)
7208 if (argbuf.length () > 1)
7209 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
7210 else if (argbuf.length () == 1)
7211 target_sysroot_suffix = xstrdup (argbuf.last ());
7214 #ifdef HAVE_LD_SYSROOT
7215 /* Pass the --sysroot option to the linker, if it supports that. If
7216 there is a sysroot_suffix_spec, it has already been processed by
7217 this point, so target_system_root really is the system root we
7219 if (target_system_root)
7221 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
7222 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
7223 set_spec ("link", XOBFINISH (&obstack, const char *), false);
7227 /* Process sysroot_hdrs_suffix_spec. */
7228 if (*sysroot_hdrs_suffix_spec != 0
7229 && !no_sysroot_suffix
7230 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
7232 if (argbuf.length () > 1)
7233 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
7234 else if (argbuf.length () == 1)
7235 target_sysroot_hdrs_suffix = xstrdup (argbuf.last ());
7238 /* Look for startfiles in the standard places. */
7239 if (*startfile_prefix_spec != 0
7240 && do_spec_2 (startfile_prefix_spec) == 0
7241 && do_spec_1 (" ", 0, NULL) == 0)
7245 FOR_EACH_VEC_ELT (argbuf, ndx, arg)
7246 add_sysrooted_prefix (&startfile_prefixes, arg, "BINUTILS",
7247 PREFIX_PRIORITY_LAST, 0, 1);
7249 /* We should eventually get rid of all these and stick to
7250 startfile_prefix_spec exclusively. */
7251 else if (*cross_compile == '0' || target_system_root)
7253 if (*md_startfile_prefix)
7254 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
7255 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
7257 if (*md_startfile_prefix_1)
7258 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
7259 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
7261 /* If standard_startfile_prefix is relative, base it on
7262 standard_exec_prefix. This lets us move the installed tree
7263 as a unit. If GCC_EXEC_PREFIX is defined, base
7264 standard_startfile_prefix on that as well.
7266 If the prefix is relative, only search it for native compilers;
7267 otherwise we will search a directory containing host libraries. */
7268 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
7269 add_sysrooted_prefix (&startfile_prefixes,
7270 standard_startfile_prefix, "BINUTILS",
7271 PREFIX_PRIORITY_LAST, 0, 1);
7272 else if (*cross_compile == '0')
7274 add_prefix (&startfile_prefixes,
7275 concat (gcc_exec_prefix
7276 ? gcc_exec_prefix : standard_exec_prefix,
7278 standard_startfile_prefix, NULL),
7279 NULL, PREFIX_PRIORITY_LAST, 0, 1);
7282 /* Sysrooted prefixes are relocated because target_system_root is
7283 also relocated by gcc_exec_prefix. */
7284 if (*standard_startfile_prefix_1)
7285 add_sysrooted_prefix (&startfile_prefixes,
7286 standard_startfile_prefix_1, "BINUTILS",
7287 PREFIX_PRIORITY_LAST, 0, 1);
7288 if (*standard_startfile_prefix_2)
7289 add_sysrooted_prefix (&startfile_prefixes,
7290 standard_startfile_prefix_2, "BINUTILS",
7291 PREFIX_PRIORITY_LAST, 0, 1);
7294 /* Process any user specified specs in the order given on the command
7296 for (struct user_specs *uptr = user_specs_head; uptr; uptr = uptr->next)
7298 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
7300 read_specs (filename ? filename : uptr->filename, false, true);
7303 /* Process any user self specs. */
7305 struct spec_list *sl;
7306 for (sl = specs; sl; sl = sl->next)
7307 if (sl->name_len == sizeof "self_spec" - 1
7308 && !strcmp (sl->name, "self_spec"))
7309 do_self_spec (*sl->ptr_spec);
7314 enum save_temps save;
7316 if (!compare_debug_second)
7318 n_switches_debug_check[1] = n_switches;
7319 n_switches_alloc_debug_check[1] = n_switches_alloc;
7320 switches_debug_check[1] = XDUPVEC (struct switchstr, switches,
7323 do_self_spec ("%:compare-debug-self-opt()");
7324 n_switches_debug_check[0] = n_switches;
7325 n_switches_alloc_debug_check[0] = n_switches_alloc;
7326 switches_debug_check[0] = switches;
7328 n_switches = n_switches_debug_check[1];
7329 n_switches_alloc = n_switches_alloc_debug_check[1];
7330 switches = switches_debug_check[1];
7333 /* Avoid crash when computing %j in this early. */
7334 save = save_temps_flag;
7335 save_temps_flag = SAVE_TEMPS_NONE;
7337 compare_debug = -compare_debug;
7338 do_self_spec ("%:compare-debug-self-opt()");
7340 save_temps_flag = save;
7342 if (!compare_debug_second)
7344 n_switches_debug_check[1] = n_switches;
7345 n_switches_alloc_debug_check[1] = n_switches_alloc;
7346 switches_debug_check[1] = switches;
7347 compare_debug = -compare_debug;
7348 n_switches = n_switches_debug_check[0];
7349 n_switches_alloc = n_switches_debug_check[0];
7350 switches = switches_debug_check[0];
7355 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
7356 if (gcc_exec_prefix)
7357 gcc_exec_prefix = concat (gcc_exec_prefix, spec_host_machine,
7358 dir_separator_str, spec_version,
7359 accel_dir_suffix, dir_separator_str, NULL);
7361 /* Now we have the specs.
7362 Set the `valid' bits for switches that match anything in any spec. */
7364 validate_all_switches ();
7366 /* Now that we have the switches and the specs, set
7367 the subdirectory based on the options. */
7368 set_multilib_dir ();
7371 /* Set up to remember the pathname of gcc and any options
7372 needed for collect. We use argv[0] instead of progname because
7373 we need the complete pathname. */
7376 driver::putenv_COLLECT_GCC (const char *argv0) const
7378 obstack_init (&collect_obstack);
7379 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
7380 obstack_grow (&collect_obstack, argv0, strlen (argv0) + 1);
7381 xputenv (XOBFINISH (&collect_obstack, char *));
7384 /* Set up to remember the pathname of the lto wrapper. */
7387 driver::maybe_putenv_COLLECT_LTO_WRAPPER () const
7389 char *lto_wrapper_file;
7392 lto_wrapper_file = NULL;
7394 lto_wrapper_file = find_a_file (&exec_prefixes, "lto-wrapper",
7396 if (lto_wrapper_file)
7398 lto_wrapper_file = convert_white_space (lto_wrapper_file);
7399 lto_wrapper_spec = lto_wrapper_file;
7400 obstack_init (&collect_obstack);
7401 obstack_grow (&collect_obstack, "COLLECT_LTO_WRAPPER=",
7402 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
7403 obstack_grow (&collect_obstack, lto_wrapper_spec,
7404 strlen (lto_wrapper_spec) + 1);
7405 xputenv (XOBFINISH (&collect_obstack, char *));
7410 /* Set up to remember the names of offload targets. */
7413 driver::maybe_putenv_OFFLOAD_TARGETS () const
7415 const char *targets = offload_targets;
7417 /* If no targets specified by -foffload, use all available targets. */
7419 targets = OFFLOAD_TARGETS;
7421 if (strlen (targets) > 0)
7423 obstack_grow (&collect_obstack, "OFFLOAD_TARGET_NAMES=",
7424 sizeof ("OFFLOAD_TARGET_NAMES=") - 1);
7425 obstack_grow (&collect_obstack, targets,
7426 strlen (targets) + 1);
7427 xputenv (XOBFINISH (&collect_obstack, char *));
7430 free (offload_targets);
7433 /* Reject switches that no pass was interested in. */
7436 driver::handle_unrecognized_options () const
7438 for (size_t i = 0; (int) i < n_switches; i++)
7439 if (! switches[i].validated)
7440 error ("unrecognized command line option %<-%s%>", switches[i].part1);
7443 /* Handle the various -print-* options, returning 0 if the driver
7444 should exit, or nonzero if the driver should continue. */
7447 driver::maybe_print_and_exit () const
7449 if (print_search_dirs)
7451 printf (_("install: %s\n"), STD_EXEC_PATH);
7452 printf (_("programs: %s\n"),
7453 build_search_list (&exec_prefixes, "", false, false));
7454 printf (_("libraries: %s\n"),
7455 build_search_list (&startfile_prefixes, "", false, true));
7459 if (print_file_name)
7461 printf ("%s\n", find_file (print_file_name));
7465 if (print_prog_name)
7467 if (use_ld != NULL && ! strcmp (print_prog_name, "ld"))
7469 /* Append USE_LD to to the default linker. */
7470 #ifdef DEFAULT_LINKER
7472 # ifdef HAVE_HOST_EXECUTABLE_SUFFIX
7473 int len = (sizeof (DEFAULT_LINKER)
7474 - sizeof (HOST_EXECUTABLE_SUFFIX));
7478 char *default_linker = xstrdup (DEFAULT_LINKER);
7479 /* Strip HOST_EXECUTABLE_SUFFIX if DEFAULT_LINKER contains
7480 HOST_EXECUTABLE_SUFFIX. */
7481 if (! strcmp (&default_linker[len], HOST_EXECUTABLE_SUFFIX))
7483 default_linker[len] = '\0';
7484 ld = concat (default_linker, use_ld,
7485 HOST_EXECUTABLE_SUFFIX, NULL);
7490 ld = concat (DEFAULT_LINKER, use_ld, NULL);
7491 if (access (ld, X_OK) == 0)
7493 printf ("%s\n", ld);
7497 print_prog_name = concat (print_prog_name, use_ld, NULL);
7499 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
7500 printf ("%s\n", (newname ? newname : print_prog_name));
7504 if (print_multi_lib)
7506 print_multilib_info ();
7510 if (print_multi_directory)
7512 if (multilib_dir == NULL)
7515 printf ("%s\n", multilib_dir);
7519 if (print_multiarch)
7521 if (multiarch_dir == NULL)
7524 printf ("%s\n", multiarch_dir);
7530 if (target_system_root)
7532 if (target_sysroot_suffix)
7533 printf ("%s%s\n", target_system_root, target_sysroot_suffix);
7535 printf ("%s\n", target_system_root);
7540 if (print_multi_os_directory)
7542 if (multilib_os_dir == NULL)
7545 printf ("%s\n", multilib_os_dir);
7549 if (print_sysroot_headers_suffix)
7551 if (*sysroot_hdrs_suffix_spec)
7553 printf("%s\n", (target_sysroot_hdrs_suffix
7554 ? target_sysroot_hdrs_suffix
7559 /* The error status indicates that only one set of fixed
7560 headers should be built. */
7561 fatal_error (input_location,
7562 "not configured with sysroot headers suffix");
7565 if (print_help_list)
7571 printf (_("\nFor bug reporting instructions, please see:\n"));
7572 printf ("%s.\n", bug_report_url);
7577 /* We do not exit here. Instead we have created a fake input file
7578 called 'help-dummy' which needs to be compiled, and we pass this
7579 on the various sub-processes, along with the --help switch.
7580 Ensure their output appears after ours. */
7581 fputc ('\n', stdout);
7587 printf (_("%s %s%s\n"), progname, pkgversion_string,
7589 printf ("Copyright %s 2015 Free Software Foundation, Inc.\n",
7591 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
7592 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
7597 /* We do not exit here. We use the same mechanism of --help to print
7598 the version of the sub-processes. */
7599 fputc ('\n', stdout);
7605 print_configuration (stderr);
7613 /* Figure out what to do with each input file.
7614 Return true if we need to exit early from "main", false otherwise. */
7617 driver::prepare_infiles ()
7620 int lang_n_infiles = 0;
7622 if (n_infiles == added_libraries)
7623 fatal_error (input_location, "no input files");
7626 /* Early exit needed from main. */
7629 /* Make a place to record the compiler output file names
7630 that correspond to the input files. */
7633 i += lang_specific_extra_outfiles;
7634 outfiles = XCNEWVEC (const char *, i);
7636 /* Record which files were specified explicitly as link input. */
7638 explicit_link_files = XCNEWVEC (char, n_infiles);
7640 combine_inputs = have_o || flag_wpa;
7642 for (i = 0; (int) i < n_infiles; i++)
7644 const char *name = infiles[i].name;
7645 struct compiler *compiler = lookup_compiler (name,
7647 infiles[i].language);
7649 if (compiler && !(compiler->combinable))
7650 combine_inputs = false;
7652 if (lang_n_infiles > 0 && compiler != input_file_compiler
7653 && infiles[i].language && infiles[i].language[0] != '*')
7654 infiles[i].incompiler = compiler;
7658 input_file_compiler = compiler;
7659 infiles[i].incompiler = compiler;
7663 /* Since there is no compiler for this input file, assume it is a
7665 explicit_link_files[i] = 1;
7666 infiles[i].incompiler = NULL;
7668 infiles[i].compiled = false;
7669 infiles[i].preprocessed = false;
7672 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1)
7673 fatal_error (input_location,
7674 "cannot specify -o with -c, -S or -E with multiple files");
7676 /* No early exit needed from main; we can continue. */
7680 /* Run the spec machinery on each input file. */
7683 driver::do_spec_on_infiles () const
7687 for (i = 0; (int) i < n_infiles; i++)
7689 int this_file_error = 0;
7691 /* Tell do_spec what to substitute for %i. */
7693 input_file_number = i;
7694 set_input (infiles[i].name);
7696 if (infiles[i].compiled)
7699 /* Use the same thing in %o, unless cp->spec says otherwise. */
7701 outfiles[i] = gcc_input_filename;
7703 /* Figure out which compiler from the file's suffix. */
7706 = lookup_compiler (infiles[i].name, input_filename_length,
7707 infiles[i].language);
7709 if (input_file_compiler)
7711 /* Ok, we found an applicable compiler. Run its spec. */
7713 if (input_file_compiler->spec[0] == '#')
7715 error ("%s: %s compiler not installed on this system",
7716 gcc_input_filename, &input_file_compiler->spec[1]);
7717 this_file_error = 1;
7725 free (debug_check_temp_file[0]);
7726 debug_check_temp_file[0] = NULL;
7728 free (debug_check_temp_file[1]);
7729 debug_check_temp_file[1] = NULL;
7732 value = do_spec (input_file_compiler->spec);
7733 infiles[i].compiled = true;
7735 this_file_error = 1;
7736 else if (compare_debug && debug_check_temp_file[0])
7739 inform (0, "recompiling with -fcompare-debug");
7741 compare_debug = -compare_debug;
7742 n_switches = n_switches_debug_check[1];
7743 n_switches_alloc = n_switches_alloc_debug_check[1];
7744 switches = switches_debug_check[1];
7746 value = do_spec (input_file_compiler->spec);
7748 compare_debug = -compare_debug;
7749 n_switches = n_switches_debug_check[0];
7750 n_switches_alloc = n_switches_alloc_debug_check[0];
7751 switches = switches_debug_check[0];
7755 error ("during -fcompare-debug recompilation");
7756 this_file_error = 1;
7759 gcc_assert (debug_check_temp_file[1]
7760 && filename_cmp (debug_check_temp_file[0],
7761 debug_check_temp_file[1]));
7764 inform (0, "comparing final insns dumps");
7766 if (compare_files (debug_check_temp_file))
7767 this_file_error = 1;
7772 free (debug_check_temp_file[0]);
7773 debug_check_temp_file[0] = NULL;
7775 free (debug_check_temp_file[1]);
7776 debug_check_temp_file[1] = NULL;
7781 /* If this file's name does not contain a recognized suffix,
7782 record it as explicit linker input. */
7785 explicit_link_files[i] = 1;
7787 /* Clear the delete-on-failure queue, deleting the files in it
7788 if this compilation failed. */
7790 if (this_file_error)
7792 delete_failure_queue ();
7795 /* If this compilation succeeded, don't delete those files later. */
7796 clear_failure_queue ();
7799 /* Reset the input file name to the first compile/object file name, for use
7800 with %b in LINK_SPEC. We use the first input file that we can find
7801 a compiler to compile it instead of using infiles.language since for
7802 languages other than C we use aliases that we then lookup later. */
7807 for (i = 0; i < n_infiles ; i++)
7808 if (infiles[i].incompiler
7809 || (infiles[i].language && infiles[i].language[0] != '*'))
7811 set_input (infiles[i].name);
7818 /* Make sure INPUT_FILE_NUMBER points to first available open
7820 input_file_number = n_infiles;
7821 if (lang_specific_pre_link ())
7826 /* If we have to run the linker, do it now. */
7829 driver::maybe_run_linker (const char *argv0) const
7832 int linker_was_run = 0;
7833 int num_linker_inputs;
7835 /* Determine if there are any linker input files. */
7836 num_linker_inputs = 0;
7837 for (i = 0; (int) i < n_infiles; i++)
7838 if (explicit_link_files[i] || outfiles[i] != NULL)
7839 num_linker_inputs++;
7841 /* Run ld to link all the compiler output files. */
7843 if (num_linker_inputs > 0 && !seen_error () && print_subprocess_help < 2)
7845 int tmp = execution_count;
7849 #if HAVE_LTO_PLUGIN > 0
7850 #if HAVE_LTO_PLUGIN == 2
7851 const char *fno_use_linker_plugin = "fno-use-linker-plugin";
7853 const char *fuse_linker_plugin = "fuse-linker-plugin";
7857 /* We'll use ld if we can't find collect2. */
7858 if (! strcmp (linker_name_spec, "collect2"))
7860 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false);
7862 linker_name_spec = "ld";
7865 #if HAVE_LTO_PLUGIN > 0
7866 #if HAVE_LTO_PLUGIN == 2
7867 if (!switch_matches (fno_use_linker_plugin,
7868 fno_use_linker_plugin
7869 + strlen (fno_use_linker_plugin), 0))
7871 if (switch_matches (fuse_linker_plugin,
7873 + strlen (fuse_linker_plugin), 0))
7876 char *temp_spec = find_a_file (&exec_prefixes,
7877 LTOPLUGINSONAME, R_OK,
7880 fatal_error (input_location,
7881 "-fuse-linker-plugin, but %s not found",
7883 linker_plugin_file_spec = convert_white_space (temp_spec);
7886 lto_gcc_spec = argv0;
7889 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
7891 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false);
7892 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true);
7894 if (print_subprocess_help == 1)
7896 printf (_("\nLinker options\n==============\n\n"));
7897 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
7898 " to the linker.\n\n"));
7901 int value = do_spec (link_command_spec);
7904 linker_was_run = (tmp != execution_count);
7907 /* If options said don't run linker,
7908 complain about input files to be given to the linker. */
7910 if (! linker_was_run && !seen_error ())
7911 for (i = 0; (int) i < n_infiles; i++)
7912 if (explicit_link_files[i]
7913 && !(infiles[i].language && infiles[i].language[0] == '*'))
7914 warning (0, "%s: linker input file unused because linking not done",
7918 /* The end of "main". */
7921 driver::final_actions () const
7923 /* Delete some or all of the temporary files we made. */
7926 delete_failure_queue ();
7927 delete_temp_files ();
7929 if (print_help_list)
7931 printf (("\nFor bug reporting instructions, please see:\n"));
7932 printf ("%s\n", bug_report_url);
7936 /* Determine what the exit code of the driver should be. */
7939 driver::get_exit_code () const
7941 return (signal_count != 0 ? 2
7942 : seen_error () ? (pass_exit_codes ? greatest_status : 1)
7946 /* Find the proper compilation spec for the file name NAME,
7947 whose length is LENGTH. LANGUAGE is the specified language,
7948 or 0 if this file is to be passed to the linker. */
7950 static struct compiler *
7951 lookup_compiler (const char *name, size_t length, const char *language)
7953 struct compiler *cp;
7955 /* If this was specified by the user to be a linker input, indicate that. */
7956 if (language != 0 && language[0] == '*')
7959 /* Otherwise, look for the language, if one is spec'd. */
7962 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
7963 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
7966 error ("language %s not recognized", language);
7970 /* Look for a suffix. */
7971 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
7973 if (/* The suffix `-' matches only the file name `-'. */
7974 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
7975 || (strlen (cp->suffix) < length
7976 /* See if the suffix matches the end of NAME. */
7977 && !strcmp (cp->suffix,
7978 name + length - strlen (cp->suffix))
7983 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
7984 /* Look again, but case-insensitively this time. */
7986 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
7988 if (/* The suffix `-' matches only the file name `-'. */
7989 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
7990 || (strlen (cp->suffix) < length
7991 /* See if the suffix matches the end of NAME. */
7992 && ((!strcmp (cp->suffix,
7993 name + length - strlen (cp->suffix))
7994 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
7995 && !strcasecmp (cp->suffix,
7996 name + length - strlen (cp->suffix)))
8002 if (cp >= compilers)
8004 if (cp->spec[0] != '@')
8005 /* A non-alias entry: return it. */
8008 /* An alias entry maps a suffix to a language.
8009 Search for the language; pass 0 for NAME and LENGTH
8010 to avoid infinite recursion if language not found. */
8011 return lookup_compiler (NULL, 0, cp->spec + 1);
8017 save_string (const char *s, int len)
8019 char *result = XNEWVEC (char, len + 1);
8021 memcpy (result, s, len);
8027 pfatal_with_name (const char *name)
8029 perror_with_name (name);
8030 delete_temp_files ();
8035 perror_with_name (const char *name)
8037 error ("%s: %m", name);
8041 validate_switches_from_spec (const char *spec, bool user)
8043 const char *p = spec;
8046 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
8047 /* We have a switch spec. */
8048 p = validate_switches (p + 1, user);
8052 validate_all_switches (void)
8054 struct compiler *comp;
8055 struct spec_list *spec;
8057 for (comp = compilers; comp->spec; comp++)
8058 validate_switches_from_spec (comp->spec, false);
8060 /* Look through the linked list of specs read from the specs file. */
8061 for (spec = specs; spec; spec = spec->next)
8062 validate_switches_from_spec (*spec->ptr_spec, spec->user_p);
8064 validate_switches_from_spec (link_command_spec, false);
8067 /* Look at the switch-name that comes after START
8068 and mark as valid all supplied switches that match it. */
8071 validate_switches (const char *start, bool user_spec)
8073 const char *p = start;
8077 bool suffix = false;
8078 bool starred = false;
8080 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
8089 if (*p == '.' || *p == ',')
8093 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
8094 || *p == ',' || *p == '.' || *p == '@')
8099 starred = true, p++;
8105 /* Mark all matching switches as valid. */
8106 for (i = 0; i < n_switches; i++)
8107 if (!strncmp (switches[i].part1, atom, len)
8108 && (starred || switches[i].part1[len] == '\0')
8109 && (switches[i].known || user_spec))
8110 switches[i].validated = true;
8114 if (*p && (p[-1] == '|' || p[-1] == '&'))
8117 if (*p && p[-1] == ':')
8119 while (*p && *p != ';' && *p != '}')
8124 if (*p == '{' || *p == '<')
8125 p = validate_switches (p+1, user_spec);
8126 else if (p[0] == 'W' && p[1] == '{')
8127 p = validate_switches (p+2, user_spec);
8134 if (*p && p[-1] == ';')
8148 static struct mdswitchstr *mdswitches;
8149 static int n_mdswitches;
8151 /* Check whether a particular argument was used. The first time we
8152 canonicalize the switches to keep only the ones we care about. */
8155 used_arg (const char *p, int len)
8160 const char *replace;
8165 static struct mswitchstr *mswitches;
8166 static int n_mswitches;
8171 struct mswitchstr *matches;
8175 /* Break multilib_matches into the component strings of string
8176 and replacement string. */
8177 for (q = multilib_matches; *q != '\0'; q++)
8182 = (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
8184 q = multilib_matches;
8193 fatal_error (input_location, "multilib spec %qs is invalid",
8198 matches[i].len = q - matches[i].str;
8200 matches[i].replace = ++q;
8201 while (*q != ';' && *q != '\0')
8204 goto invalid_matches;
8207 matches[i].rep_len = q - matches[i].replace;
8213 /* Now build a list of the replacement string for switches that we care
8214 about. Make sure we allocate at least one entry. This prevents
8215 xmalloc from calling fatal, and prevents us from re-executing this
8218 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1));
8219 for (i = 0; i < n_switches; i++)
8220 if ((switches[i].live_cond & SWITCH_IGNORE) == 0)
8222 int xlen = strlen (switches[i].part1);
8223 for (j = 0; j < cnt; j++)
8224 if (xlen == matches[j].len
8225 && ! strncmp (switches[i].part1, matches[j].str, xlen))
8227 mswitches[n_mswitches].str = matches[j].replace;
8228 mswitches[n_mswitches].len = matches[j].rep_len;
8229 mswitches[n_mswitches].replace = (char *) 0;
8230 mswitches[n_mswitches].rep_len = 0;
8236 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
8237 on the command line nor any options mutually incompatible with
8239 for (i = 0; i < n_mdswitches; i++)
8243 for (q = multilib_options; *q != '\0'; *q && q++)
8249 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
8250 || strchr (" /", q[mdswitches[i].len]) == NULL)
8252 while (*q != ' ' && *q != '/' && *q != '\0')
8259 if (*q != ' ' && *q != '\0')
8261 while (*r != ' ' && *r != '\0')
8264 while (*q != ' ' && *q != '/' && *q != '\0')
8267 if (used_arg (r, q - r))
8272 mswitches[n_mswitches].str = mdswitches[i].str;
8273 mswitches[n_mswitches].len = mdswitches[i].len;
8274 mswitches[n_mswitches].replace = (char *) 0;
8275 mswitches[n_mswitches].rep_len = 0;
8288 for (i = 0; i < n_mswitches; i++)
8289 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
8296 default_arg (const char *p, int len)
8300 for (i = 0; i < n_mdswitches; i++)
8301 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
8307 /* Work out the subdirectory to use based on the options. The format of
8308 multilib_select is a list of elements. Each element is a subdirectory
8309 name followed by a list of options followed by a semicolon. The format
8310 of multilib_exclusions is the same, but without the preceding
8311 directory. First gcc will check the exclusions, if none of the options
8312 beginning with an exclamation point are present, and all of the other
8313 options are present, then we will ignore this completely. Passing
8314 that, gcc will consider each multilib_select in turn using the same
8315 rules for matching the options. If a match is found, that subdirectory
8317 A subdirectory name is optionally followed by a colon and the corresponding
8321 set_multilib_dir (void)
8324 unsigned int this_path_len;
8325 const char *this_path, *this_arg;
8326 const char *start, *end;
8328 int ok, ndfltok, first;
8331 start = multilib_defaults;
8332 while (*start == ' ' || *start == '\t')
8334 while (*start != '\0')
8337 while (*start != ' ' && *start != '\t' && *start != '\0')
8339 while (*start == ' ' || *start == '\t')
8347 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches);
8348 for (start = multilib_defaults; *start != '\0'; start = end + 1)
8350 while (*start == ' ' || *start == '\t')
8356 for (end = start + 1;
8357 *end != ' ' && *end != '\t' && *end != '\0'; end++)
8360 obstack_grow (&multilib_obstack, start, end - start);
8361 obstack_1grow (&multilib_obstack, 0);
8362 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *);
8363 mdswitches[i++].len = end - start;
8370 p = multilib_exclusions;
8373 /* Ignore newlines. */
8380 /* Check the arguments. */
8387 fatal_error (input_location, "multilib exclusions %qs is invalid",
8388 multilib_exclusions);
8398 while (*p != ' ' && *p != ';')
8401 goto invalid_exclusions;
8405 if (*this_arg != '!')
8413 ok = used_arg (this_arg, p - this_arg);
8428 p = multilib_select;
8430 /* Append multilib reuse rules if any. With those rules, we can reuse
8431 one multilib for certain different options sets. */
8432 if (strlen (multilib_reuse) > 0)
8433 p = concat (p, multilib_reuse, NULL);
8437 /* Ignore newlines. */
8444 /* Get the initial path. */
8451 fatal_error (input_location, "multilib select %qs %qs is invalid",
8452 multilib_select, multilib_reuse);
8456 this_path_len = p - this_path;
8458 /* Check the arguments. */
8465 goto invalid_select;
8474 while (*p != ' ' && *p != ';')
8477 goto invalid_select;
8481 if (*this_arg != '!')
8489 /* If this is a default argument, we can just ignore it.
8490 This is true even if this_arg begins with '!'. Beginning
8491 with '!' does not mean that this argument is necessarily
8492 inappropriate for this library: it merely means that
8493 there is a more specific library which uses this
8494 argument. If this argument is a default, we need not
8495 consider that more specific library. */
8496 ok = used_arg (this_arg, p - this_arg);
8503 if (default_arg (this_arg, p - this_arg))
8512 if (this_path_len != 1
8513 || this_path[0] != '.')
8515 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1);
8518 strncpy (new_multilib_dir, this_path, this_path_len);
8519 new_multilib_dir[this_path_len] = '\0';
8520 q = strchr (new_multilib_dir, ':');
8523 multilib_dir = new_multilib_dir;
8530 const char *q = this_path, *end = this_path + this_path_len;
8532 while (q < end && *q != ':')
8536 const char *q2 = q + 1, *ml_end = end;
8537 char *new_multilib_os_dir;
8539 while (q2 < end && *q2 != ':')
8543 if (ml_end - q == 1)
8544 multilib_os_dir = xstrdup (".");
8547 new_multilib_os_dir = XNEWVEC (char, ml_end - q);
8548 memcpy (new_multilib_os_dir, q + 1, ml_end - q - 1);
8549 new_multilib_os_dir[ml_end - q - 1] = '\0';
8550 multilib_os_dir = new_multilib_os_dir;
8553 if (q2 < end && *q2 == ':')
8555 char *new_multiarch_dir = XNEWVEC (char, end - q2);
8556 memcpy (new_multiarch_dir, q2 + 1, end - q2 - 1);
8557 new_multiarch_dir[end - q2 - 1] = '\0';
8558 multiarch_dir = new_multiarch_dir;
8567 if (multilib_dir == NULL && multilib_os_dir != NULL
8568 && strcmp (multilib_os_dir, ".") == 0)
8570 free (CONST_CAST (char *, multilib_os_dir));
8571 multilib_os_dir = NULL;
8573 else if (multilib_dir != NULL && multilib_os_dir == NULL)
8574 multilib_os_dir = multilib_dir;
8577 /* Print out the multiple library subdirectory selection
8578 information. This prints out a series of lines. Each line looks
8579 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
8580 required. Only the desired options are printed out, the negative
8581 matches. The options are print without a leading dash. There are
8582 no spaces to make it easy to use the information in the shell.
8583 Each subdirectory is printed only once. This assumes the ordering
8584 generated by the genmultilib script. Also, we leave out ones that match
8588 print_multilib_info (void)
8590 const char *p = multilib_select;
8591 const char *last_path = 0, *this_path;
8593 unsigned int last_path_len = 0;
8598 /* Ignore newlines. */
8605 /* Get the initial path. */
8612 fatal_error (input_location,
8613 "multilib select %qs is invalid", multilib_select);
8619 /* When --disable-multilib was used but target defines
8620 MULTILIB_OSDIRNAMES, entries starting with .: (and not starting
8621 with .:: for multiarch configurations) are there just to find
8622 multilib_os_dir, so skip them from output. */
8623 if (this_path[0] == '.' && this_path[1] == ':' && this_path[2] != ':')
8626 /* Check for matches with the multilib_exclusions. We don't bother
8627 with the '!' in either list. If any of the exclusion rules match
8628 all of its options with the select rule, we skip it. */
8630 const char *e = multilib_exclusions;
8631 const char *this_arg;
8636 /* Ignore newlines. */
8643 /* Check the arguments. */
8652 fatal_error (input_location,
8653 "multilib exclusion %qs is invalid",
8654 multilib_exclusions);
8665 while (*e != ' ' && *e != ';')
8668 goto invalid_exclusion;
8676 int len = e - this_arg;
8679 goto invalid_select;
8683 while (*q != ' ' && *q != ';')
8686 goto invalid_select;
8690 if (! strncmp (arg, this_arg,
8691 (len < q - arg) ? q - arg : len)
8692 || default_arg (this_arg, e - this_arg))
8722 /* If this is a duplicate, skip it. */
8723 skip = (last_path != 0
8724 && (unsigned int) (p - this_path) == last_path_len
8725 && ! filename_ncmp (last_path, this_path, last_path_len));
8727 last_path = this_path;
8728 last_path_len = p - this_path;
8731 /* If this directory requires any default arguments, we can skip
8732 it. We will already have printed a directory identical to
8733 this one which does not require that default argument. */
8744 goto invalid_select;
8751 while (*q != ' ' && *q != ';')
8754 goto invalid_select;
8759 && default_arg (arg, q - arg))
8774 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
8785 goto invalid_select;
8793 use_arg = *p != '!';
8798 while (*p != ' ' && *p != ';')
8801 goto invalid_select;
8813 /* If there are extra options, print them now. */
8814 if (multilib_extra && *multilib_extra)
8816 int print_at = TRUE;
8819 for (q = multilib_extra; *q != '\0'; q++)
8840 /* getenv built-in spec function.
8842 Returns the value of the environment variable given by its first
8843 argument, concatenated with the second argument. If the
8844 environment variable is not defined, a fatal error is issued. */
8847 getenv_spec_function (int argc, const char **argv)
8857 value = getenv (argv[0]);
8859 fatal_error (input_location,
8860 "environment variable %qs not defined", argv[0]);
8862 /* We have to escape every character of the environment variable so
8863 they are not interpreted as active spec characters. A
8864 particularly painful case is when we are reading a variable
8865 holding a windows path complete with \ separators. */
8866 len = strlen (value) * 2 + strlen (argv[1]) + 1;
8867 result = XNEWVAR (char, len);
8868 for (ptr = result; *value; ptr += 2)
8874 strcpy (ptr, argv[1]);
8879 /* if-exists built-in spec function.
8881 Checks to see if the file specified by the absolute pathname in
8882 ARGS exists. Returns that pathname if found.
8884 The usual use for this function is to check for a library file
8885 (whose name has been expanded with %s). */
8888 if_exists_spec_function (int argc, const char **argv)
8890 /* Must have only one argument. */
8891 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
8897 /* if-exists-else built-in spec function.
8899 This is like if-exists, but takes an additional argument which
8900 is returned if the first argument does not exist. */
8903 if_exists_else_spec_function (int argc, const char **argv)
8905 /* Must have exactly two arguments. */
8909 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
8915 /* sanitize built-in spec function.
8917 This returns non-NULL, if sanitizing address, thread or
8918 any of the undefined behavior sanitizers. */
8921 sanitize_spec_function (int argc, const char **argv)
8926 if (strcmp (argv[0], "address") == 0)
8927 return (flag_sanitize & SANITIZE_USER_ADDRESS) ? "" : NULL;
8928 if (strcmp (argv[0], "kernel-address") == 0)
8929 return (flag_sanitize & SANITIZE_KERNEL_ADDRESS) ? "" : NULL;
8930 if (strcmp (argv[0], "thread") == 0)
8931 return (flag_sanitize & SANITIZE_THREAD) ? "" : NULL;
8932 if (strcmp (argv[0], "undefined") == 0)
8933 return ((flag_sanitize & (SANITIZE_UNDEFINED | SANITIZE_NONDEFAULT))
8934 && !flag_sanitize_undefined_trap_on_error) ? "" : NULL;
8935 if (strcmp (argv[0], "leak") == 0)
8936 return ((flag_sanitize
8937 & (SANITIZE_ADDRESS | SANITIZE_LEAK | SANITIZE_THREAD))
8938 == SANITIZE_LEAK) ? "" : NULL;
8942 /* replace-outfile built-in spec function.
8944 This looks for the first argument in the outfiles array's name and
8945 replaces it with the second argument. */
8948 replace_outfile_spec_function (int argc, const char **argv)
8951 /* Must have exactly two arguments. */
8955 for (i = 0; i < n_infiles; i++)
8957 if (outfiles[i] && !filename_cmp (outfiles[i], argv[0]))
8958 outfiles[i] = xstrdup (argv[1]);
8963 /* remove-outfile built-in spec function.
8965 * This looks for the first argument in the outfiles array's name and
8969 remove_outfile_spec_function (int argc, const char **argv)
8972 /* Must have exactly one argument. */
8976 for (i = 0; i < n_infiles; i++)
8978 if (outfiles[i] && !filename_cmp (outfiles[i], argv[0]))
8984 /* Given two version numbers, compares the two numbers.
8985 A version number must match the regular expression
8986 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
8989 compare_version_strings (const char *v1, const char *v2)
8994 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
8995 REG_EXTENDED | REG_NOSUB) != 0)
8997 rresult = regexec (&r, v1, 0, NULL, 0);
8998 if (rresult == REG_NOMATCH)
8999 fatal_error (input_location, "invalid version number %qs", v1);
9000 else if (rresult != 0)
9002 rresult = regexec (&r, v2, 0, NULL, 0);
9003 if (rresult == REG_NOMATCH)
9004 fatal_error (input_location, "invalid version number %qs", v2);
9005 else if (rresult != 0)
9008 return strverscmp (v1, v2);
9012 /* version_compare built-in spec function.
9014 This takes an argument of the following form:
9016 <comparison-op> <arg1> [<arg2>] <switch> <result>
9018 and produces "result" if the comparison evaluates to true,
9019 and nothing if it doesn't.
9021 The supported <comparison-op> values are:
9023 >= true if switch is a later (or same) version than arg1
9025 < true if switch is an earlier version than arg1
9027 >< true if switch is arg1 or later, and earlier than arg2
9028 <> true if switch is earlier than arg1 or is arg2 or later
9030 If the switch is not present, the condition is false unless
9031 the first character of the <comparison-op> is '!'.
9034 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
9035 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
9038 version_compare_spec_function (int argc, const char **argv)
9042 const char *switch_value = NULL;
9047 fatal_error (input_location, "too few arguments to %%:version-compare");
9048 if (argv[0][0] == '\0')
9050 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!')
9052 if (argc != nargs + 3)
9053 fatal_error (input_location, "too many arguments to %%:version-compare");
9055 switch_len = strlen (argv[nargs + 1]);
9056 for (i = 0; i < n_switches; i++)
9057 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len)
9058 && check_live_switch (i, switch_len))
9059 switch_value = switches[i].part1 + switch_len;
9061 if (switch_value == NULL)
9065 comp1 = compare_version_strings (switch_value, argv[1]);
9067 comp2 = compare_version_strings (switch_value, argv[2]);
9069 comp2 = -1; /* This value unused. */
9072 switch (argv[0][0] << 8 | argv[0][1])
9074 case '>' << 8 | '=':
9075 result = comp1 >= 0;
9077 case '!' << 8 | '<':
9078 result = comp1 >= 0 || switch_value == NULL;
9083 case '!' << 8 | '>':
9084 result = comp1 < 0 || switch_value == NULL;
9086 case '>' << 8 | '<':
9087 result = comp1 >= 0 && comp2 < 0;
9089 case '<' << 8 | '>':
9090 result = comp1 < 0 || comp2 >= 0;
9094 fatal_error (input_location,
9095 "unknown operator %qs in %%:version-compare", argv[0]);
9100 return argv[nargs + 2];
9103 /* %:include builtin spec function. This differs from %include in that it
9104 can be nested inside a spec, and thus be conditionalized. It takes
9105 one argument, the filename, and looks for it in the startfile path.
9106 The result is always NULL, i.e. an empty expansion. */
9109 include_spec_function (int argc, const char **argv)
9116 file = find_a_file (&startfile_prefixes, argv[0], R_OK, true);
9117 read_specs (file ? file : argv[0], false, false);
9122 /* %:find-file spec function. This function replaces its argument by
9123 the file found through find_file, that is the -print-file-name gcc
9126 find_file_spec_function (int argc, const char **argv)
9133 file = find_file (argv[0]);
9138 /* %:find-plugindir spec function. This function replaces its argument
9139 by the -iplugindir=<dir> option. `dir' is found through find_file, that
9140 is the -print-file-name gcc program option. */
9142 find_plugindir_spec_function (int argc, const char **argv ATTRIBUTE_UNUSED)
9149 option = concat ("-iplugindir=", find_file ("plugin"), NULL);
9154 /* %:print-asm-header spec function. Print a banner to say that the
9155 following output is from the assembler. */
9158 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED,
9159 const char **argv ATTRIBUTE_UNUSED)
9161 printf (_("Assembler options\n=================\n\n"));
9162 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
9167 /* Get a random number for -frandom-seed */
9169 static unsigned HOST_WIDE_INT
9170 get_random_number (void)
9172 unsigned HOST_WIDE_INT ret = 0;
9175 fd = open ("/dev/urandom", O_RDONLY);
9178 read (fd, &ret, sizeof (HOST_WIDE_INT));
9184 /* Get some more or less random data. */
9185 #ifdef HAVE_GETTIMEOFDAY
9189 gettimeofday (&tv, NULL);
9190 ret = tv.tv_sec * 1000 + tv.tv_usec / 1000;
9194 time_t now = time (NULL);
9196 if (now != (time_t)-1)
9197 ret = (unsigned) now;
9201 return ret ^ getpid ();
9204 /* %:compare-debug-dump-opt spec function. Save the last argument,
9205 expected to be the last -fdump-final-insns option, or generate a
9209 compare_debug_dump_opt_spec_function (int arg,
9210 const char **argv ATTRIBUTE_UNUSED)
9215 static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3];
9218 fatal_error (input_location,
9219 "too many arguments to %%:compare-debug-dump-opt");
9221 do_spec_2 ("%{fdump-final-insns=*:%*}");
9222 do_spec_1 (" ", 0, NULL);
9224 if (argbuf.length () > 0
9225 && strcmp (argv[argbuf.length () - 1], "."))
9230 name = xstrdup (argv[argbuf.length () - 1]);
9235 const char *ext = NULL;
9237 if (argbuf.length () > 0)
9239 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
9242 else if (!compare_debug)
9245 do_spec_2 ("%g.gkd");
9247 do_spec_1 (" ", 0, NULL);
9249 gcc_assert (argbuf.length () > 0);
9251 name = concat (argbuf.last (), ext, NULL);
9253 ret = concat ("-fdump-final-insns=", name, NULL);
9256 which = compare_debug < 0;
9257 debug_check_temp_file[which] = name;
9261 unsigned HOST_WIDE_INT value = get_random_number ();
9263 sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value);
9269 ret = concat ("%{!frandom-seed=*:-frandom-seed=", random_seed, "} ",
9280 static const char *debug_auxbase_opt;
9282 /* %:compare-debug-self-opt spec function. Expands to the options
9283 that are to be passed in the second compilation of
9287 compare_debug_self_opt_spec_function (int arg,
9288 const char **argv ATTRIBUTE_UNUSED)
9291 fatal_error (input_location,
9292 "too many arguments to %%:compare-debug-self-opt");
9294 if (compare_debug >= 0)
9297 do_spec_2 ("%{c|S:%{o*:%*}}");
9298 do_spec_1 (" ", 0, NULL);
9300 if (argbuf.length () > 0)
9301 debug_auxbase_opt = concat ("-auxbase-strip ",
9305 debug_auxbase_opt = NULL;
9308 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
9309 %<fdump-final-insns=* -w -S -o %j \
9310 %{!fcompare-debug-second:-fcompare-debug-second} \
9311 ", compare_debug_opt, NULL);
9314 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
9315 options that are to be passed in the second compilation of
9316 compare-debug. It expects, as an argument, the basename of the
9317 current input file name, with the .gk suffix appended to it. */
9320 compare_debug_auxbase_opt_spec_function (int arg,
9327 fatal_error (input_location,
9328 "too few arguments to %%:compare-debug-auxbase-opt");
9331 fatal_error (input_location,
9332 "too many arguments to %%:compare-debug-auxbase-opt");
9334 if (compare_debug >= 0)
9337 len = strlen (argv[0]);
9338 if (len < 3 || strcmp (argv[0] + len - 3, ".gk") != 0)
9339 fatal_error (input_location, "argument to %%:compare-debug-auxbase-opt "
9340 "does not end in .gk");
9342 if (debug_auxbase_opt)
9343 return debug_auxbase_opt;
9345 #define OPT "-auxbase "
9348 name = (char*) xmalloc (sizeof (OPT) + len);
9349 memcpy (name, OPT, sizeof (OPT) - 1);
9350 memcpy (name + sizeof (OPT) - 1, argv[0], len);
9351 name[sizeof (OPT) - 1 + len] = '\0';
9358 /* %:pass-through-libs spec function. Finds all -l options and input
9359 file names in the lib spec passed to it, and makes a list of them
9360 prepended with the plugin option to cause them to be passed through
9361 to the final link after all the new object files have been added. */
9364 pass_through_libs_spec_func (int argc, const char **argv)
9366 char *prepended = xstrdup (" ");
9368 /* Shlemiel the painter's algorithm. Innately horrible, but at least
9369 we know that there will never be more than a handful of strings to
9370 concat, and it's only once per run, so it's not worth optimising. */
9371 for (n = 0; n < argc; n++)
9373 char *old = prepended;
9374 /* Anything that isn't an option is a full path to an output
9375 file; pass it through if it ends in '.a'. Among options,
9377 if (argv[n][0] == '-' && argv[n][1] == 'l')
9379 const char *lopt = argv[n] + 2;
9380 /* Handle both joined and non-joined -l options. If for any
9381 reason there's a trailing -l with no joined or following
9382 arg just discard it. */
9383 if (!*lopt && ++n >= argc)
9387 prepended = concat (prepended, "-plugin-opt=-pass-through=-l",
9390 else if (!strcmp (".a", argv[n] + strlen (argv[n]) - 2))
9392 prepended = concat (prepended, "-plugin-opt=-pass-through=",
9393 argv[n], " ", NULL);
9395 if (prepended != old)
9401 /* %:replace-extension spec function. Replaces the extension of the
9402 first argument with the second argument. */
9405 replace_extension_spec_func (int argc, const char **argv)
9413 fatal_error (input_location, "too few arguments to %%:replace-extension");
9415 name = xstrdup (argv[0]);
9417 for (i = strlen (name) - 1; i >= 0; i--)
9418 if (IS_DIR_SEPARATOR (name[i]))
9421 p = strrchr (name + i + 1, '.');
9425 result = concat (name, argv[1], NULL);
9431 /* Insert backslash before spaces in ORIG (usually a file path), to
9432 avoid being broken by spec parser.
9434 This function is needed as do_spec_1 treats white space (' ' and '\t')
9435 as the end of an argument. But in case of -plugin /usr/gcc install/xxx.so,
9436 the file name should be treated as a single argument rather than being
9437 broken into multiple. Solution is to insert '\\' before the space in a
9440 This function converts and only converts all occurrence of ' '
9441 to '\\' + ' ' and '\t' to '\\' + '\t'. For example:
9445 "a\\ b" -> "a\\\\ b"
9447 orig: input null-terminating string that was allocated by xalloc. The
9448 memory it points to might be freed in this function. Behavior undefined
9449 if ORIG wasn't xalloced or was freed already at entry.
9451 Return: ORIG if no conversion needed. Otherwise a newly allocated string
9452 that was converted from ORIG. */
9455 convert_white_space (char *orig)
9457 int len, number_of_space = 0;
9459 for (len = 0; orig[len]; len++)
9460 if (orig[len] == ' ' || orig[len] == '\t') number_of_space++;
9462 if (number_of_space)
9464 char *new_spec = (char *) xmalloc (len + number_of_space + 1);
9466 for (j = 0, k = 0; j <= len; j++, k++)
9468 if (orig[j] == ' ' || orig[j] == '\t')
9469 new_spec[k++] = '\\';
9470 new_spec[k] = orig[j];