1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987-2014 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
;
161 /* Nonzero if cross-compiling.
162 When -b is used, the value comes from the `specs' file. */
164 #ifdef CROSS_DIRECTORY_STRUCTURE
165 static const char *cross_compile
= "1";
167 static const char *cross_compile
= "0";
170 /* Greatest exit code of sub-processes that has been encountered up to
172 static int greatest_status
= 1;
174 /* This is the obstack which we use to allocate many strings. */
176 static struct obstack obstack
;
178 /* This is the obstack to build an environment variable to pass to
179 collect2 that describes all of the relevant switches of what to
180 pass the compiler in building the list of pointers to constructors
183 static struct obstack collect_obstack
;
185 /* Forward declaration for prototypes. */
189 static void init_spec (void);
190 static void store_arg (const char *, int, int);
191 static void insert_wrapper (const char *);
192 static char *load_specs (const char *);
193 static void read_specs (const char *, bool, bool);
194 static void set_spec (const char *, const char *, bool);
195 static struct compiler
*lookup_compiler (const char *, size_t, const char *);
196 static char *build_search_list (const struct path_prefix
*, const char *,
198 static void xputenv (const char *);
199 static void putenv_from_prefixes (const struct path_prefix
*, const char *,
201 static int access_check (const char *, int);
202 static char *find_a_file (const struct path_prefix
*, const char *, int, bool);
203 static void add_prefix (struct path_prefix
*, const char *, const char *,
205 static void add_sysrooted_prefix (struct path_prefix
*, const char *,
206 const char *, int, int, int);
207 static char *skip_whitespace (char *);
208 static void delete_if_ordinary (const char *);
209 static void delete_temp_files (void);
210 static void delete_failure_queue (void);
211 static void clear_failure_queue (void);
212 static int check_live_switch (int, int);
213 static const char *handle_braces (const char *);
214 static inline bool input_suffix_matches (const char *, const char *);
215 static inline bool switch_matches (const char *, const char *, int);
216 static inline void mark_matching_switches (const char *, const char *, int);
217 static inline void process_marked_switches (void);
218 static const char *process_brace_body (const char *, const char *, const char *, int, int);
219 static const struct spec_function
*lookup_spec_function (const char *);
220 static const char *eval_spec_function (const char *, const char *);
221 static const char *handle_spec_function (const char *, bool *);
222 static char *save_string (const char *, int);
223 static void set_collect_gcc_options (void);
224 static int do_spec_1 (const char *, int, const char *);
225 static int do_spec_2 (const char *);
226 static void do_option_spec (const char *, const char *);
227 static void do_self_spec (const char *);
228 static const char *find_file (const char *);
229 static int is_directory (const char *, bool);
230 static const char *validate_switches (const char *, bool);
231 static void validate_all_switches (void);
232 static inline void validate_switches_from_spec (const char *, bool);
233 static void give_switch (int, int);
234 static int used_arg (const char *, int);
235 static int default_arg (const char *, int);
236 static void set_multilib_dir (void);
237 static void print_multilib_info (void);
238 static void perror_with_name (const char *);
239 static void display_help (void);
240 static void add_preprocessor_option (const char *, int);
241 static void add_assembler_option (const char *, int);
242 static void add_linker_option (const char *, int);
243 static void process_command (unsigned int, struct cl_decoded_option
*);
244 static int execute (void);
245 static void alloc_args (void);
246 static void clear_args (void);
247 static void fatal_signal (int);
248 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
249 static void init_gcc_specs (struct obstack
*, const char *, const char *,
252 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
253 static const char *convert_filename (const char *, int, int);
256 static const char *getenv_spec_function (int, const char **);
257 static const char *if_exists_spec_function (int, const char **);
258 static const char *if_exists_else_spec_function (int, const char **);
259 static const char *sanitize_spec_function (int, const char **);
260 static const char *replace_outfile_spec_function (int, const char **);
261 static const char *remove_outfile_spec_function (int, const char **);
262 static const char *version_compare_spec_function (int, const char **);
263 static const char *include_spec_function (int, const char **);
264 static const char *find_file_spec_function (int, const char **);
265 static const char *find_plugindir_spec_function (int, const char **);
266 static const char *print_asm_header_spec_function (int, const char **);
267 static const char *compare_debug_dump_opt_spec_function (int, const char **);
268 static const char *compare_debug_self_opt_spec_function (int, const char **);
269 static const char *compare_debug_auxbase_opt_spec_function (int, const char **);
270 static const char *pass_through_libs_spec_func (int, const char **);
271 static const char *replace_extension_spec_func (int, const char **);
272 static char *convert_white_space (char *);
274 /* The Specs Language
276 Specs are strings containing lines, each of which (if not blank)
277 is made up of a program name, and arguments separated by spaces.
278 The program name must be exact and start from root, since no path
279 is searched and it is unreliable to depend on the current working directory.
280 Redirection of input or output is not supported; the subprograms must
281 accept filenames saying what files to read and write.
283 In addition, the specs can contain %-sequences to substitute variable text
284 or for conditional text. Here is a table of all defined %-sequences.
285 Note that spaces are not generated automatically around the results of
286 expanding these sequences; therefore, you can concatenate them together
287 or with constant text in a single argument.
289 %% substitute one % into the program name or argument.
290 %i substitute the name of the input file being processed.
291 %b substitute the basename of the input file being processed.
292 This is the substring up to (and not including) the last period
293 and not including the directory unless -save-temps was specified
294 to put temporaries in a different location.
295 %B same as %b, but include the file suffix (text after the last period).
297 substitute a file name that has suffix SUFFIX and is chosen
298 once per compilation, and mark the argument a la %d. To reduce
299 exposure to denial-of-service attacks, the file name is now
300 chosen in a way that is hard to predict even when previously
301 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
302 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
303 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
304 had been pre-processed. Previously, %g was simply substituted
305 with a file name chosen once per compilation, without regard
306 to any appended suffix (which was therefore treated just like
307 ordinary text), making such attacks more likely to succeed.
309 like %g, but if -pipe is in effect, expands simply to "-".
311 like %g, but if -pipe is in effect, expands to nothing. (We have both
312 %| and %m to accommodate differences between system assemblers; see
313 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
315 like %g, but generates a new temporary file name even if %uSUFFIX
318 substitutes the last file name generated with %uSUFFIX, generating a
319 new one if there is no such last file name. In the absence of any
320 %uSUFFIX, this is just like %gSUFFIX, except they don't share
321 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
322 would involve the generation of two distinct file names, one
323 for each `%g.s' and another for each `%U.s'. Previously, %U was
324 simply substituted with a file name chosen for the previous %u,
325 without regard to any appended suffix.
327 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
328 writable, and if save-temps is off; otherwise, substitute the name
329 of a temporary file, just like %u. This temporary file is not
330 meant for communication between processes, but rather as a junk
333 substitutes .SUFFIX for the suffixes of a matched switch's args when
334 it is subsequently output with %*. SUFFIX is terminated by the next
336 %d marks the argument containing or following the %d as a
337 temporary file name, so that that file will be deleted if GCC exits
338 successfully. Unlike %g, this contributes no text to the argument.
339 %w marks the argument containing or following the %w as the
340 "output file" of this compilation. This puts the argument
341 into the sequence of arguments that %o will substitute later.
342 %V indicates that this compilation produces no "output file".
344 like %{...} but mark last argument supplied within
345 as a file to be deleted on failure.
346 %o substitutes the names of all the output files, with spaces
347 automatically placed around them. You should write spaces
348 around the %o as well or the results are undefined.
349 %o is for use in the specs for running the linker.
350 Input files whose names have no recognized suffix are not compiled
351 at all, but they are included among the output files, so they will
353 %O substitutes the suffix for object files. Note that this is
354 handled specially when it immediately follows %g, %u, or %U
355 (with or without a suffix argument) because of the need for
356 those to form complete file names. The handling is such that
357 %O is treated exactly as if it had already been substituted,
358 except that %g, %u, and %U do not currently support additional
359 SUFFIX characters following %O as they would following, for
361 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
362 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
363 and -B options) and -imultilib as necessary.
364 %s current argument is the name of a library or startup file of some sort.
365 Search for that file in a standard list of directories
366 and substitute the full name found.
367 %eSTR Print STR as an error message. STR is terminated by a newline.
368 Use this when inconsistent options are detected.
369 %nSTR Print STR as a notice. STR is terminated by a newline.
370 %x{OPTION} Accumulate an option for %X.
371 %X Output the accumulated linker options specified by compilations.
372 %Y Output the accumulated assembler options specified by compilations.
373 %Z Output the accumulated preprocessor options specified by compilations.
374 %a process ASM_SPEC as a spec.
375 This allows config.h to specify part of the spec for running as.
376 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
377 used here. This can be used to run a post-processor after the
378 assembler has done its job.
379 %D Dump out a -L option for each directory in startfile_prefixes.
380 If multilib_dir is set, extra entries are generated with it affixed.
381 %l process LINK_SPEC as a spec.
382 %L process LIB_SPEC as a spec.
383 %M Output multilib_os_dir.
384 %G process LIBGCC_SPEC as a spec.
385 %R Output the concatenation of target_system_root and
386 target_sysroot_suffix.
387 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
388 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
389 %C process CPP_SPEC as a spec.
390 %1 process CC1_SPEC as a spec.
391 %2 process CC1PLUS_SPEC as a spec.
392 %* substitute the variable part of a matched option. (See below.)
393 Note that each comma in the substituted string is replaced by
394 a single space. A space is appended after the last substition
395 unless there is more text in current sequence.
396 %<S remove all occurrences of -S from the command line.
397 Note - this command is position dependent. % commands in the
398 spec string before this one will see -S, % commands in the
399 spec string after this one will not.
400 %>S Similar to "%<S", but keep it in the GCC command line.
401 %<S* remove all occurrences of all switches beginning with -S from the
404 Call the named function FUNCTION, passing it ARGS. ARGS is
405 first processed as a nested spec string, then split into an
406 argument vector in the usual fashion. The function returns
407 a string which is processed as if it had appeared literally
408 as part of the current spec.
409 %{S} substitutes the -S switch, if that switch was given to GCC.
410 If that switch was not specified, this substitutes nothing.
411 Here S is a metasyntactic variable.
412 %{S*} substitutes all the switches specified to GCC whose names start
413 with -S. This is used for -o, -I, etc; switches that take
414 arguments. GCC considers `-o foo' as being one switch whose
415 name starts with `o'. %{o*} would substitute this text,
416 including the space; thus, two arguments would be generated.
417 %{S*&T*} likewise, but preserve order of S and T options (the order
418 of S and T in the spec is not significant). Can be any number
419 of ampersand-separated variables; for each the wild card is
420 optional. Useful for CPP as %{D*&U*&A*}.
422 %{S:X} substitutes X, if the -S switch was given to GCC.
423 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
424 %{S*:X} substitutes X if one or more switches whose names start
425 with -S was given to GCC. Normally X is substituted only
426 once, no matter how many such switches appeared. However,
427 if %* appears somewhere in X, then X will be substituted
428 once for each matching switch, with the %* replaced by the
429 part of that switch that matched the '*'. A space will be
430 appended after the last substition unless there is more
431 text in current sequence.
432 %{.S:X} substitutes X, if processing a file with suffix S.
433 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
434 %{,S:X} substitutes X, if processing a file which will use spec S.
435 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
437 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
438 combined with '!', '.', ',', and '*' as above binding stronger
440 If %* appears in X, all of the alternatives must be starred, and
441 only the first matching alternative is substituted.
442 %{%:function(args):X}
443 Call function named FUNCTION with args ARGS. If the function
444 returns non-NULL, then X is substituted, if it returns
445 NULL, it isn't substituted.
446 %{S:X; if S was given to GCC, substitutes X;
447 T:Y; else if T was given to GCC, substitutes Y;
448 :D} else substitutes D. There can be as many clauses as you need.
449 This may be combined with '.', '!', ',', '|', and '*' as above.
451 %(Spec) processes a specification defined in a specs file as *Spec:
453 The conditional text X in a %{S:X} or similar construct may contain
454 other nested % constructs or spaces, or even newlines. They are
455 processed as usual, as described above. Trailing white space in X is
456 ignored. White space may also appear anywhere on the left side of the
457 colon in these constructs, except between . or * and the corresponding
460 The -O, -f, -g, -m, and -W switches are handled specifically in these
461 constructs. If another value of -O or the negated form of a -f, -m, or
462 -W switch is found later in the command line, the earlier switch
463 value is ignored, except with {S*} where S is just one letter; this
464 passes all matching options.
466 The character | at the beginning of the predicate text is used to indicate
467 that a command should be piped to the following command, but only if -pipe
470 Note that it is built into GCC which switches take arguments and which
471 do not. You might think it would be useful to generalize this to
472 allow each compiler's spec to say which switches take arguments. But
473 this cannot be done in a consistent fashion. GCC cannot even decide
474 which input files have been specified without knowing which switches
475 take arguments, and it must know which input files to compile in order
476 to tell which compilers to run.
478 GCC also knows implicitly that arguments starting in `-l' are to be
479 treated as compiler output files, and passed to the linker in their
480 proper position among the other output files. */
482 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
484 /* config.h can define ASM_SPEC to provide extra args to the assembler
485 or extra switch-translations. */
490 /* config.h can define ASM_FINAL_SPEC to run a post processor after
491 the assembler has run. */
492 #ifndef ASM_FINAL_SPEC
493 #define ASM_FINAL_SPEC \
495 objcopy --extract-dwo \
496 %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \
497 %{c:%{o*:%:replace-extension(%{o*:%*} .dwo)}%{!o*:%b.dwo}}%{!c:%b.dwo} \n\
498 objcopy --strip-dwo \
499 %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \
503 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
504 or extra switch-translations. */
509 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
510 or extra switch-translations. */
515 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
516 or extra switch-translations. */
518 #define CC1PLUS_SPEC ""
521 /* config.h can define LINK_SPEC to provide extra args to the linker
522 or extra switch-translations. */
527 /* config.h can define LIB_SPEC to override the default libraries. */
529 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
532 /* When using -fsplit-stack we need to wrap pthread_create, in order
533 to initialize the stack guard. We always use wrapping, rather than
534 shared library ordering, and we keep the wrapper function in
535 libgcc. This is not yet a real spec, though it could become one;
536 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping
537 only works with GNU ld and gold. */
538 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}"
541 #define STATIC_LIBASAN_LIBS \
542 " %{static-libasan:%:include(libsanitizer.spec)%(link_libasan)}"
543 #ifdef LIBASAN_EARLY_SPEC
544 #define LIBASAN_SPEC STATIC_LIBASAN_LIBS
545 #elif defined(HAVE_LD_STATIC_DYNAMIC)
546 #define LIBASAN_SPEC "%{static-libasan:" LD_STATIC_OPTION \
547 "} -lasan %{static-libasan:" LD_DYNAMIC_OPTION "}" \
550 #define LIBASAN_SPEC "-lasan" STATIC_LIBASAN_LIBS
554 #ifndef LIBASAN_EARLY_SPEC
555 #define LIBASAN_EARLY_SPEC ""
559 #define STATIC_LIBTSAN_LIBS \
560 " %{static-libtsan:%:include(libsanitizer.spec)%(link_libtsan)}"
561 #ifdef LIBTSAN_EARLY_SPEC
562 #define LIBTSAN_SPEC STATIC_LIBTSAN_LIBS
563 #elif defined(HAVE_LD_STATIC_DYNAMIC)
564 #define LIBTSAN_SPEC "%{static-libtsan:" LD_STATIC_OPTION \
565 "} -ltsan %{static-libtsan:" LD_DYNAMIC_OPTION "}" \
568 #define LIBTSAN_SPEC "-ltsan" STATIC_LIBTSAN_LIBS
572 #ifndef LIBTSAN_EARLY_SPEC
573 #define LIBTSAN_EARLY_SPEC ""
577 #define STATIC_LIBLSAN_LIBS \
578 " %{static-liblsan:%:include(libsanitizer.spec)%(link_liblsan)}"
579 #ifdef LIBLSAN_EARLY_SPEC
580 #define LIBLSAN_SPEC STATIC_LIBLSAN_LIBS
581 #elif defined(HAVE_LD_STATIC_DYNAMIC)
582 #define LIBLSAN_SPEC "%{static-liblsan:" LD_STATIC_OPTION \
583 "} -llsan %{static-liblsan:" LD_DYNAMIC_OPTION "}" \
586 #define LIBLSAN_SPEC "-llsan" STATIC_LIBLSAN_LIBS
590 #ifndef LIBLSAN_EARLY_SPEC
591 #define LIBLSAN_EARLY_SPEC ""
594 #ifndef LIBUBSAN_SPEC
595 #define STATIC_LIBUBSAN_LIBS \
596 " %{static-libubsan:%:include(libsanitizer.spec)%(link_libubsan)}"
597 #ifdef HAVE_LD_STATIC_DYNAMIC
598 #define LIBUBSAN_SPEC "%{static-libubsan:" LD_STATIC_OPTION \
599 "} -lubsan %{static-libubsan:" LD_DYNAMIC_OPTION "}" \
602 #define LIBUBSAN_SPEC "-lubsan" STATIC_LIBUBSAN_LIBS
606 /* Linker options for compressed debug sections. */
607 #if HAVE_LD_COMPRESS_DEBUG == 0
608 /* No linker support. */
609 #define LINK_COMPRESS_DEBUG_SPEC \
610 " %{gz*:%e-gz is not supported in this configuration} "
611 #elif HAVE_LD_COMPRESS_DEBUG == 1
612 /* GNU style on input, GNU ld options. Reject, not useful. */
613 #define LINK_COMPRESS_DEBUG_SPEC \
614 " %{gz*:%e-gz is not supported in this configuration} "
615 #elif HAVE_LD_COMPRESS_DEBUG == 2
616 /* GNU style, GNU gold options. */
617 #define LINK_COMPRESS_DEBUG_SPEC \
618 " %{gz|gz=zlib-gnu:" LD_COMPRESS_DEBUG_OPTION "=zlib}" \
619 " %{gz=none:" LD_COMPRESS_DEBUG_OPTION "=none}" \
620 " %{gz=zlib:%e-gz=zlib is not supported in this configuration} "
621 #elif HAVE_LD_COMPRESS_DEBUG == 3
622 /* ELF gABI style. */
623 #define LINK_COMPRESS_DEBUG_SPEC \
624 " %{gz|gz=zlib:" LD_COMPRESS_DEBUG_OPTION "=zlib}" \
625 " %{gz=none:" LD_COMPRESS_DEBUG_OPTION "=none}" \
626 " %{gz=zlib-gnu:" LD_COMPRESS_DEBUG_OPTION "=zlib-gnu} "
628 #error Unknown value for HAVE_LD_COMPRESS_DEBUG.
631 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
634 #if defined(REAL_LIBGCC_SPEC)
635 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
636 #elif defined(LINK_LIBGCC_SPECIAL_1)
637 /* Have gcc do the search for libgcc.a. */
638 #define LIBGCC_SPEC "libgcc.a%s"
640 #define LIBGCC_SPEC "-lgcc"
644 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
645 #ifndef STARTFILE_SPEC
646 #define STARTFILE_SPEC \
647 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
650 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
652 #define ENDFILE_SPEC ""
656 #define LINKER_NAME "collect2"
659 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
660 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
665 /* Assembler options for compressed debug sections. */
666 #if HAVE_LD_COMPRESS_DEBUG < 2
667 /* Reject if the linker cannot write compressed debug sections. */
668 #define ASM_COMPRESS_DEBUG_SPEC \
669 " %{gz*:%e-gz is not supported in this configuration} "
670 #else /* HAVE_LD_COMPRESS_DEBUG >= 2 */
671 #if HAVE_AS_COMPRESS_DEBUG == 0
672 /* No assembler support. Ignore silently. */
673 #define ASM_COMPRESS_DEBUG_SPEC \
675 #elif HAVE_AS_COMPRESS_DEBUG == 1
676 /* GNU style, GNU as options. */
677 #define ASM_COMPRESS_DEBUG_SPEC \
678 " %{gz|gz=zlib-gnu:" AS_COMPRESS_DEBUG_OPTION "}" \
679 " %{gz=none:" AS_NO_COMPRESS_DEBUG_OPTION "}" \
680 " %{gz=zlib:%e-gz=zlib is not supported in this configuration} "
681 #elif HAVE_AS_COMPRESS_DEBUG == 2
682 /* ELF gABI style. */
683 #define ASM_COMPRESS_DEBUG_SPEC \
684 " %{gz|gz=zlib:" AS_COMPRESS_DEBUG_OPTION "=zlib}" \
685 " %{gz=none:" AS_COMPRESS_DEBUG_OPTION "=none}" \
686 " %{gz=zlib-gnu:" AS_COMPRESS_DEBUG_OPTION "=zlib-gnu} "
688 #error Unknown value for HAVE_AS_COMPRESS_DEBUG.
690 #endif /* HAVE_LD_COMPRESS_DEBUG >= 2 */
692 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
694 #ifndef ASM_DEBUG_SPEC
695 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
696 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
697 # define ASM_DEBUG_SPEC \
698 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
699 ? "%{!g0:%{gdwarf*:--gdwarf2}%{!gdwarf*:%{g*:--gstabs}}}" ASM_MAP \
700 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
702 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
703 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
705 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
706 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
710 #ifndef ASM_DEBUG_SPEC
711 # define ASM_DEBUG_SPEC ""
714 /* Here is the spec for running the linker, after compiling all files. */
716 /* This is overridable by the target in case they need to specify the
717 -lgcc and -lc order specially, yet not require them to override all
718 of LINK_COMMAND_SPEC. */
719 #ifndef LINK_GCC_C_SEQUENCE_SPEC
720 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
723 #ifndef LINK_SSP_SPEC
724 #ifdef TARGET_LIBC_PROVIDES_SSP
725 #define LINK_SSP_SPEC "%{fstack-protector:}"
727 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-strong|fstack-protector-all:-lssp_nonshared -lssp}"
731 #ifndef LINK_PIE_SPEC
733 #define LINK_PIE_SPEC "%{pie:-pie} "
735 #define LINK_PIE_SPEC "%{pie:} "
739 #ifndef LINK_BUILDID_SPEC
740 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
741 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
745 /* Conditional to test whether the LTO plugin is used or not.
746 FIXME: For slim LTO we will need to enable plugin unconditionally. This
747 still cause problems with PLUGIN_LD != LD and when plugin is built but
748 not useable. For GCC 4.6 we don't support slim LTO and thus we can enable
749 plugin only when LTO is enabled. We still honor explicit
750 -fuse-linker-plugin if the linker used understands -plugin. */
752 /* The linker has some plugin support. */
753 #if HAVE_LTO_PLUGIN > 0
754 /* The linker used has full plugin support, use LTO plugin by default. */
755 #if HAVE_LTO_PLUGIN == 2
756 #define PLUGIN_COND "!fno-use-linker-plugin:%{!fno-lto"
757 #define PLUGIN_COND_CLOSE "}"
759 /* The linker used has limited plugin support, use LTO plugin with explicit
760 -fuse-linker-plugin. */
761 #define PLUGIN_COND "fuse-linker-plugin"
762 #define PLUGIN_COND_CLOSE ""
764 #define LINK_PLUGIN_SPEC \
766 -plugin %(linker_plugin_file) \
767 -plugin-opt=%(lto_wrapper) \
768 -plugin-opt=-fresolution=%u.res \
769 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
772 /* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */
773 #define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\
774 %e-fuse-linker-plugin is not supported in this configuration}"
777 /* Linker command line options for -fsanitize= early on the command line. */
778 #ifndef SANITIZER_EARLY_SPEC
779 #define SANITIZER_EARLY_SPEC "\
780 %{!nostdlib:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_EARLY_SPEC "} \
781 %{%:sanitize(thread):" LIBTSAN_EARLY_SPEC "} \
782 %{%:sanitize(leak):" LIBLSAN_EARLY_SPEC "}}}"
785 /* Linker command line options for -fsanitize= late on the command line. */
786 #ifndef SANITIZER_SPEC
787 #define SANITIZER_SPEC "\
788 %{!nostdlib:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_SPEC "\
789 %{static:%ecannot specify -static with -fsanitize=address}}\
790 %{%:sanitize(thread):" LIBTSAN_SPEC "\
791 %{!pie:%{!shared:%e-fsanitize=thread linking must be done with -pie or -shared}}}\
792 %{%:sanitize(undefined):" LIBUBSAN_SPEC "}\
793 %{%:sanitize(leak):" LIBLSAN_SPEC "}}}"
796 /* This is the spec to use, once the code for creating the vtable
797 verification runtime library, libvtv.so, has been created. Currently
798 the vtable verification runtime functions are in libstdc++, so we use
799 the spec just below this one. */
800 #ifndef VTABLE_VERIFICATION_SPEC
801 #define VTABLE_VERIFICATION_SPEC "\
802 %{!nostdlib:%{fvtable-verify=std: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}\
803 %{fvtable-verify=preinit: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}}"
806 /* -u* was put back because both BSD and SysV seem to support it. */
807 /* %{static:} simply prevents an error message if the target machine
808 doesn't handle -static. */
809 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
810 scripts which exist in user specified directories, or in standard
812 /* We pass any -flto flags on to the linker, which is expected
813 to understand them. In practice, this means it had better be collect2. */
814 /* %{e*} includes -export-dynamic; see comment in common.opt. */
815 #ifndef LINK_COMMAND_SPEC
816 #define LINK_COMMAND_SPEC "\
817 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
820 "%{flto|flto=*:%<fcompare-debug*} \
821 %{flto} %{flto=*} %l " LINK_PIE_SPEC \
822 "%{fuse-ld=*:-fuse-ld=%*} " LINK_COMPRESS_DEBUG_SPEC \
823 "%X %{o*} %{e*} %{N} %{n} %{r}\
824 %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}} " VTABLE_VERIFICATION_SPEC " \
825 %{static:} %{L*} %(mfwrap) %(link_libgcc) " SANITIZER_EARLY_SPEC " %o\
826 %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
827 %{fcilkplus:%:include(libcilkrts.spec)%(link_cilkrts)}\
828 %{fgnu-tm:%:include(libitm.spec)%(link_itm)}\
829 %(mflib) " STACK_SPLIT_SPEC "\
830 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} " SANITIZER_SPEC " \
831 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
832 %{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}"
835 #ifndef LINK_LIBGCC_SPEC
836 /* Generate -L options for startfile prefix list. */
837 # define LINK_LIBGCC_SPEC "%D"
840 #ifndef STARTFILE_PREFIX_SPEC
841 # define STARTFILE_PREFIX_SPEC ""
845 # define SYSROOT_SPEC "--sysroot=%R"
848 #ifndef SYSROOT_SUFFIX_SPEC
849 # define SYSROOT_SUFFIX_SPEC ""
852 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
853 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
856 static const char *asm_debug
= ASM_DEBUG_SPEC
;
857 static const char *cpp_spec
= CPP_SPEC
;
858 static const char *cc1_spec
= CC1_SPEC
;
859 static const char *cc1plus_spec
= CC1PLUS_SPEC
;
860 static const char *link_gcc_c_sequence_spec
= LINK_GCC_C_SEQUENCE_SPEC
;
861 static const char *link_ssp_spec
= LINK_SSP_SPEC
;
862 static const char *asm_spec
= ASM_SPEC
;
863 static const char *asm_final_spec
= ASM_FINAL_SPEC
;
864 static const char *link_spec
= LINK_SPEC
;
865 static const char *lib_spec
= LIB_SPEC
;
866 static const char *link_gomp_spec
= "";
867 static const char *libgcc_spec
= LIBGCC_SPEC
;
868 static const char *endfile_spec
= ENDFILE_SPEC
;
869 static const char *startfile_spec
= STARTFILE_SPEC
;
870 static const char *linker_name_spec
= LINKER_NAME
;
871 static const char *linker_plugin_file_spec
= "";
872 static const char *lto_wrapper_spec
= "";
873 static const char *lto_gcc_spec
= "";
874 static const char *link_command_spec
= LINK_COMMAND_SPEC
;
875 static const char *link_libgcc_spec
= LINK_LIBGCC_SPEC
;
876 static const char *startfile_prefix_spec
= STARTFILE_PREFIX_SPEC
;
877 static const char *sysroot_spec
= SYSROOT_SPEC
;
878 static const char *sysroot_suffix_spec
= SYSROOT_SUFFIX_SPEC
;
879 static const char *sysroot_hdrs_suffix_spec
= SYSROOT_HEADERS_SUFFIX_SPEC
;
880 static const char *self_spec
= "";
882 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
883 There should be no need to override these in target dependent files,
884 but we need to copy them to the specs file so that newer versions
885 of the GCC driver can correctly drive older tool chains with the
886 appropriate -B options. */
888 /* When cpplib handles traditional preprocessing, get rid of this, and
889 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
890 that we default the front end language better. */
891 static const char *trad_capable_cpp
=
892 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}";
894 /* We don't wrap .d files in %W{} since a missing .d file, and
895 therefore no dependency entry, confuses make into thinking a .o
896 file that happens to exist is up-to-date. */
897 static const char *cpp_unique_options
=
898 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
899 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
900 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
901 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
902 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
903 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
904 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
905 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
908 /* This contains cpp options which are common with cc1_options and are passed
909 only when preprocessing only to avoid duplication. We pass the cc1 spec
910 options to the preprocessor so that it the cc1 spec may manipulate
911 options used to set target flags. Those special target flags settings may
912 in turn cause preprocessor symbols to be defined specially. */
913 static const char *cpp_options
=
914 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
915 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
916 %{undef} %{save-temps*:-fpch-preprocess}";
918 /* This contains cpp options which are not passed when the preprocessor
919 output will be used by another program. */
920 static const char *cpp_debug_options
= "%{d*}";
922 /* NB: This is shared amongst all front-ends, except for Ada. */
923 static const char *cc1_options
=
924 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
925 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
926 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
927 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
928 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
929 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
930 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
931 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\
932 %{-target-help:--target-help}\
933 %{-version:--version}\
934 %{-help=*:--help=%*}\
935 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
936 %{fsyntax-only:-o %j} %{-param*}\
937 %{coverage:-fprofile-arcs -ftest-coverage}";
939 static const char *asm_options
=
940 "%{-target-help:%:print-asm-header()} "
942 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
943 to the assembler equivalents. */
944 "%{v} %{w:-W} %{I*} "
946 ASM_COMPRESS_DEBUG_SPEC
947 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
949 static const char *invoke_as
=
950 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
952 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
953 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
957 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
958 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
962 /* Some compilers have limits on line lengths, and the multilib_select
963 and/or multilib_matches strings can be very long, so we build them at
965 static struct obstack multilib_obstack
;
966 static const char *multilib_select
;
967 static const char *multilib_matches
;
968 static const char *multilib_defaults
;
969 static const char *multilib_exclusions
;
970 static const char *multilib_reuse
;
972 /* Check whether a particular argument is a default argument. */
974 #ifndef MULTILIB_DEFAULTS
975 #define MULTILIB_DEFAULTS { "" }
978 static const char *const multilib_defaults_raw
[] = MULTILIB_DEFAULTS
;
980 #ifndef DRIVER_SELF_SPECS
981 #define DRIVER_SELF_SPECS ""
984 /* Linking to libgomp implies pthreads. This is particularly important
985 for targets that use different start files and suchlike. */
986 #ifndef GOMP_SELF_SPECS
987 #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}"
990 /* Likewise for -fgnu-tm. */
991 #ifndef GTM_SELF_SPECS
992 #define GTM_SELF_SPECS "%{fgnu-tm: -pthread}"
995 /* Likewise for -fcilkplus. */
996 #ifndef CILK_SELF_SPECS
997 #define CILK_SELF_SPECS "%{fcilkplus: -pthread}"
1000 static const char *const driver_self_specs
[] = {
1001 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
1002 DRIVER_SELF_SPECS
, CONFIGURE_SPECS
, GOMP_SELF_SPECS
, GTM_SELF_SPECS
,
1006 #ifndef OPTION_DEFAULT_SPECS
1007 #define OPTION_DEFAULT_SPECS { "", "" }
1016 static const struct default_spec
1017 option_default_specs
[] = { OPTION_DEFAULT_SPECS
};
1021 struct user_specs
*next
;
1022 const char *filename
;
1025 static struct user_specs
*user_specs_head
, *user_specs_tail
;
1028 /* Record the mapping from file suffixes for compilation specs. */
1032 const char *suffix
; /* Use this compiler for input files
1033 whose names end in this suffix. */
1035 const char *spec
; /* To use this compiler, run this spec. */
1037 const char *cpp_spec
; /* If non-NULL, substitute this spec
1038 for `%C', rather than the usual
1040 const int combinable
; /* If nonzero, compiler can deal with
1041 multiple source files at once (IMA). */
1042 const int needs_preprocessing
; /* If nonzero, source files need to
1043 be run through a preprocessor. */
1046 /* Pointer to a vector of `struct compiler' that gives the spec for
1047 compiling a file, based on its suffix.
1048 A file that does not end in any of these suffixes will be passed
1049 unchanged to the loader and nothing else will be done to it.
1051 An entry containing two 0s is used to terminate the vector.
1053 If multiple entries match a file, the last matching one is used. */
1055 static struct compiler
*compilers
;
1057 /* Number of entries in `compilers', not counting the null terminator. */
1059 static int n_compilers
;
1061 /* The default list of file name suffixes and their compilation specs. */
1063 static const struct compiler default_compilers
[] =
1065 /* Add lists of suffixes of known languages here. If those languages
1066 were not present when we built the driver, we will hit these copies
1067 and be given a more meaningful error than "file not used since
1068 linking is not done". */
1069 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
1070 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
1071 {".mii", "#Objective-C++", 0, 0, 0},
1072 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
1073 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
1074 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
1075 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
1076 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
1077 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
1078 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
1079 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
1080 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
1081 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
1082 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
1083 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
1084 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
1085 {".r", "#Ratfor", 0, 0, 0},
1086 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
1087 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
1088 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
1089 {".go", "#Go", 0, 1, 0},
1090 /* Next come the entries for C. */
1091 {".c", "@c", 0, 0, 1},
1093 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1094 external preprocessor if -save-temps is given. */
1095 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1098 %eGNU C no longer supports -traditional without -E}\
1099 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1100 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1101 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1103 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1104 cc1 %(cpp_unique_options) %(cc1_options)}}}\
1105 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
1107 "%{!E:%e-E or -x required when input is from standard input}\
1108 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
1109 {".h", "@c-header", 0, 0, 0},
1111 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1112 external preprocessor if -save-temps is given. */
1113 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1115 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1116 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1117 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1119 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
1120 %W{o*:--output-pch=%*}}%V}\
1121 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1122 cc1 %(cpp_unique_options) %(cc1_options)\
1123 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
1124 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
1125 {".i", "@cpp-output", 0, 0, 0},
1127 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
1128 {".s", "@assembler", 0, 0, 0},
1130 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
1131 {".sx", "@assembler-with-cpp", 0, 0, 0},
1132 {".S", "@assembler-with-cpp", 0, 0, 0},
1133 {"@assembler-with-cpp",
1134 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
1135 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1136 %{E|M|MM:%(cpp_debug_options)}\
1137 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1138 as %(asm_debug) %(asm_options) %|.s %A }}}}"
1140 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1141 %{E|M|MM:%(cpp_debug_options)}\
1142 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1143 as %(asm_debug) %(asm_options) %m.s %A }}}}"
1148 /* Mark end of table. */
1152 /* Number of elements in default_compilers, not counting the terminator. */
1154 static const int n_default_compilers
= ARRAY_SIZE (default_compilers
) - 1;
1156 typedef char *char_p
; /* For DEF_VEC_P. */
1158 /* A vector of options to give to the linker.
1159 These options are accumulated by %x,
1160 and substituted into the linker command with %X. */
1161 static vec
<char_p
> linker_options
;
1163 /* A vector of options to give to the assembler.
1164 These options are accumulated by -Wa,
1165 and substituted into the assembler command with %Y. */
1166 static vec
<char_p
> assembler_options
;
1168 /* A vector of options to give to the preprocessor.
1169 These options are accumulated by -Wp,
1170 and substituted into the preprocessor command with %Z. */
1171 static vec
<char_p
> preprocessor_options
;
1174 skip_whitespace (char *p
)
1178 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1179 be considered whitespace. */
1180 if (p
[0] == '\n' && p
[1] == '\n' && p
[2] == '\n')
1182 else if (*p
== '\n' || *p
== ' ' || *p
== '\t')
1196 /* Structures to keep track of prefixes to try when looking for files. */
1200 const char *prefix
; /* String to prepend to the path. */
1201 struct prefix_list
*next
; /* Next in linked list. */
1202 int require_machine_suffix
; /* Don't use without machine_suffix. */
1203 /* 2 means try both machine_suffix and just_machine_suffix. */
1204 int priority
; /* Sort key - priority within list. */
1205 int os_multilib
; /* 1 if OS multilib scheme should be used,
1206 0 for GCC multilib scheme. */
1211 struct prefix_list
*plist
; /* List of prefixes to try */
1212 int max_len
; /* Max length of a prefix in PLIST */
1213 const char *name
; /* Name of this list (used in config stuff) */
1216 /* List of prefixes to try when looking for executables. */
1218 static struct path_prefix exec_prefixes
= { 0, 0, "exec" };
1220 /* List of prefixes to try when looking for startup (crt0) files. */
1222 static struct path_prefix startfile_prefixes
= { 0, 0, "startfile" };
1224 /* List of prefixes to try when looking for include files. */
1226 static struct path_prefix include_prefixes
= { 0, 0, "include" };
1228 /* Suffix to attach to directories searched for commands.
1229 This looks like `MACHINE/VERSION/'. */
1231 static const char *machine_suffix
= 0;
1233 /* Suffix to attach to directories searched for commands.
1234 This is just `MACHINE/'. */
1236 static const char *just_machine_suffix
= 0;
1238 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1240 static const char *gcc_exec_prefix
;
1242 /* Adjusted value of standard_libexec_prefix. */
1244 static const char *gcc_libexec_prefix
;
1246 /* Default prefixes to attach to command names. */
1248 #ifndef STANDARD_STARTFILE_PREFIX_1
1249 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1251 #ifndef STANDARD_STARTFILE_PREFIX_2
1252 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1255 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1256 #undef MD_EXEC_PREFIX
1257 #undef MD_STARTFILE_PREFIX
1258 #undef MD_STARTFILE_PREFIX_1
1261 /* If no prefixes defined, use the null string, which will disable them. */
1262 #ifndef MD_EXEC_PREFIX
1263 #define MD_EXEC_PREFIX ""
1265 #ifndef MD_STARTFILE_PREFIX
1266 #define MD_STARTFILE_PREFIX ""
1268 #ifndef MD_STARTFILE_PREFIX_1
1269 #define MD_STARTFILE_PREFIX_1 ""
1272 /* These directories are locations set at configure-time based on the
1273 --prefix option provided to configure. Their initializers are
1274 defined in Makefile.in. These paths are not *directly* used when
1275 gcc_exec_prefix is set because, in that case, we know where the
1276 compiler has been installed, and use paths relative to that
1277 location instead. */
1278 static const char *const standard_exec_prefix
= STANDARD_EXEC_PREFIX
;
1279 static const char *const standard_libexec_prefix
= STANDARD_LIBEXEC_PREFIX
;
1280 static const char *const standard_bindir_prefix
= STANDARD_BINDIR_PREFIX
;
1281 static const char *const standard_startfile_prefix
= STANDARD_STARTFILE_PREFIX
;
1283 /* For native compilers, these are well-known paths containing
1284 components that may be provided by the system. For cross
1285 compilers, these paths are not used. */
1286 static const char *md_exec_prefix
= MD_EXEC_PREFIX
;
1287 static const char *md_startfile_prefix
= MD_STARTFILE_PREFIX
;
1288 static const char *md_startfile_prefix_1
= MD_STARTFILE_PREFIX_1
;
1289 static const char *const standard_startfile_prefix_1
1290 = STANDARD_STARTFILE_PREFIX_1
;
1291 static const char *const standard_startfile_prefix_2
1292 = STANDARD_STARTFILE_PREFIX_2
;
1294 /* A relative path to be used in finding the location of tools
1295 relative to the driver. */
1296 static const char *const tooldir_base_prefix
= TOOLDIR_BASE_PREFIX
;
1298 /* Subdirectory to use for locating libraries. Set by
1299 set_multilib_dir based on the compilation options. */
1301 static const char *multilib_dir
;
1303 /* Subdirectory to use for locating libraries in OS conventions. Set by
1304 set_multilib_dir based on the compilation options. */
1306 static const char *multilib_os_dir
;
1308 /* Subdirectory to use for locating libraries in multiarch conventions. Set by
1309 set_multilib_dir based on the compilation options. */
1311 static const char *multiarch_dir
;
1313 /* Structure to keep track of the specs that have been defined so far.
1314 These are accessed using %(specname) in a compiler or link
1319 /* The following 2 fields must be first */
1320 /* to allow EXTRA_SPECS to be initialized */
1321 const char *name
; /* name of the spec. */
1322 const char *ptr
; /* available ptr if no static pointer */
1324 /* The following fields are not initialized */
1325 /* by EXTRA_SPECS */
1326 const char **ptr_spec
; /* pointer to the spec itself. */
1327 struct spec_list
*next
; /* Next spec in linked list. */
1328 int name_len
; /* length of the name */
1329 bool user_p
; /* whether string come from file spec. */
1330 bool alloc_p
; /* whether string was allocated */
1333 #define INIT_STATIC_SPEC(NAME,PTR) \
1334 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, false, false }
1336 /* List of statically defined specs. */
1337 static struct spec_list static_specs
[] =
1339 INIT_STATIC_SPEC ("asm", &asm_spec
),
1340 INIT_STATIC_SPEC ("asm_debug", &asm_debug
),
1341 INIT_STATIC_SPEC ("asm_final", &asm_final_spec
),
1342 INIT_STATIC_SPEC ("asm_options", &asm_options
),
1343 INIT_STATIC_SPEC ("invoke_as", &invoke_as
),
1344 INIT_STATIC_SPEC ("cpp", &cpp_spec
),
1345 INIT_STATIC_SPEC ("cpp_options", &cpp_options
),
1346 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options
),
1347 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options
),
1348 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp
),
1349 INIT_STATIC_SPEC ("cc1", &cc1_spec
),
1350 INIT_STATIC_SPEC ("cc1_options", &cc1_options
),
1351 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec
),
1352 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec
),
1353 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec
),
1354 INIT_STATIC_SPEC ("endfile", &endfile_spec
),
1355 INIT_STATIC_SPEC ("link", &link_spec
),
1356 INIT_STATIC_SPEC ("lib", &lib_spec
),
1357 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec
),
1358 INIT_STATIC_SPEC ("libgcc", &libgcc_spec
),
1359 INIT_STATIC_SPEC ("startfile", &startfile_spec
),
1360 INIT_STATIC_SPEC ("cross_compile", &cross_compile
),
1361 INIT_STATIC_SPEC ("version", &compiler_version
),
1362 INIT_STATIC_SPEC ("multilib", &multilib_select
),
1363 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults
),
1364 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra
),
1365 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches
),
1366 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions
),
1367 INIT_STATIC_SPEC ("multilib_options", &multilib_options
),
1368 INIT_STATIC_SPEC ("multilib_reuse", &multilib_reuse
),
1369 INIT_STATIC_SPEC ("linker", &linker_name_spec
),
1370 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec
),
1371 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec
),
1372 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec
),
1373 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec
),
1374 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix
),
1375 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix
),
1376 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1
),
1377 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec
),
1378 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec
),
1379 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec
),
1380 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec
),
1381 INIT_STATIC_SPEC ("self_spec", &self_spec
),
1384 #ifdef EXTRA_SPECS /* additional specs needed */
1385 /* Structure to keep track of just the first two args of a spec_list.
1386 That is all that the EXTRA_SPECS macro gives us. */
1389 const char *const name
;
1390 const char *const ptr
;
1393 static const struct spec_list_1 extra_specs_1
[] = { EXTRA_SPECS
};
1394 static struct spec_list
*extra_specs
= (struct spec_list
*) 0;
1397 /* List of dynamically allocates specs that have been defined so far. */
1399 static struct spec_list
*specs
= (struct spec_list
*) 0;
1401 /* List of static spec functions. */
1403 static const struct spec_function static_spec_functions
[] =
1405 { "getenv", getenv_spec_function
},
1406 { "if-exists", if_exists_spec_function
},
1407 { "if-exists-else", if_exists_else_spec_function
},
1408 { "sanitize", sanitize_spec_function
},
1409 { "replace-outfile", replace_outfile_spec_function
},
1410 { "remove-outfile", remove_outfile_spec_function
},
1411 { "version-compare", version_compare_spec_function
},
1412 { "include", include_spec_function
},
1413 { "find-file", find_file_spec_function
},
1414 { "find-plugindir", find_plugindir_spec_function
},
1415 { "print-asm-header", print_asm_header_spec_function
},
1416 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function
},
1417 { "compare-debug-self-opt", compare_debug_self_opt_spec_function
},
1418 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function
},
1419 { "pass-through-libs", pass_through_libs_spec_func
},
1420 { "replace-extension", replace_extension_spec_func
},
1421 #ifdef EXTRA_SPEC_FUNCTIONS
1422 EXTRA_SPEC_FUNCTIONS
1427 static int processing_spec_function
;
1429 /* Add appropriate libgcc specs to OBSTACK, taking into account
1430 various permutations of -shared-libgcc, -shared, and such. */
1432 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1434 #ifndef USE_LD_AS_NEEDED
1435 #define USE_LD_AS_NEEDED 0
1439 init_gcc_specs (struct obstack
*obstack
, const char *shared_name
,
1440 const char *static_name
, const char *eh_name
)
1444 buf
= concat ("%{static|static-libgcc:", static_name
, " ", eh_name
, "}"
1445 "%{!static:%{!static-libgcc:"
1446 #if USE_LD_AS_NEEDED
1447 "%{!shared-libgcc:",
1448 static_name
, " " LD_AS_NEEDED_OPTION
" ",
1449 shared_name
, " " LD_NO_AS_NEEDED_OPTION
1452 shared_name
, "%{!shared: ", static_name
, "}"
1456 "%{!shared-libgcc:", static_name
, " ", eh_name
, "}"
1457 "%{shared-libgcc:", shared_name
, " ", static_name
, "}"
1461 "%{shared-libgcc:", shared_name
, "}"
1462 "%{!shared-libgcc:", static_name
, "}"
1465 "%{shared:", shared_name
, "}"
1470 obstack_grow (obstack
, buf
, strlen (buf
));
1473 #endif /* ENABLE_SHARED_LIBGCC */
1475 /* Initialize the specs lookup routines. */
1480 struct spec_list
*next
= (struct spec_list
*) 0;
1481 struct spec_list
*sl
= (struct spec_list
*) 0;
1485 return; /* Already initialized. */
1488 fnotice (stderr
, "Using built-in specs.\n");
1491 extra_specs
= XCNEWVEC (struct spec_list
, ARRAY_SIZE (extra_specs_1
));
1493 for (i
= ARRAY_SIZE (extra_specs_1
) - 1; i
>= 0; i
--)
1495 sl
= &extra_specs
[i
];
1496 sl
->name
= extra_specs_1
[i
].name
;
1497 sl
->ptr
= extra_specs_1
[i
].ptr
;
1499 sl
->name_len
= strlen (sl
->name
);
1500 sl
->ptr_spec
= &sl
->ptr
;
1505 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1507 sl
= &static_specs
[i
];
1512 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1513 /* ??? If neither -shared-libgcc nor --static-libgcc was
1514 seen, then we should be making an educated guess. Some proposed
1515 heuristics for ELF include:
1517 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1518 program will be doing dynamic loading, which will likely
1519 need the shared libgcc.
1521 (2) If "-ldl", then it's also a fair bet that we're doing
1524 (3) For each ET_DYN we're linking against (either through -lfoo
1525 or /some/path/foo.so), check to see whether it or one of
1526 its dependencies depends on a shared libgcc.
1530 If the runtime is fixed to look for program headers instead
1531 of calling __register_frame_info at all, for each object,
1532 use the shared libgcc if any EH symbol referenced.
1534 If crtstuff is fixed to not invoke __register_frame_info
1535 automatically, for each object, use the shared libgcc if
1536 any non-empty unwind section found.
1538 Doing any of this probably requires invoking an external program to
1539 do the actual object file scanning. */
1541 const char *p
= libgcc_spec
;
1544 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1545 when given the proper command line arguments. */
1548 if (in_sep
&& *p
== '-' && strncmp (p
, "-lgcc", 5) == 0)
1550 init_gcc_specs (&obstack
,
1552 #ifdef USE_LIBUNWIND_EXCEPTIONS
1558 #ifdef USE_LIBUNWIND_EXCEPTIONS
1559 # ifdef HAVE_LD_STATIC_DYNAMIC
1560 " %{!static:" LD_STATIC_OPTION
"} -lunwind"
1561 " %{!static:" LD_DYNAMIC_OPTION
"}"
1571 else if (in_sep
&& *p
== 'l' && strncmp (p
, "libgcc.a%s", 10) == 0)
1573 /* Ug. We don't know shared library extensions. Hope that
1574 systems that use this form don't do shared libraries. */
1575 init_gcc_specs (&obstack
,
1579 #ifdef USE_LIBUNWIND_EXCEPTIONS
1588 obstack_1grow (&obstack
, *p
);
1589 in_sep
= (*p
== ' ');
1594 obstack_1grow (&obstack
, '\0');
1595 libgcc_spec
= XOBFINISH (&obstack
, const char *);
1598 #ifdef USE_AS_TRADITIONAL_FORMAT
1599 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1601 static const char tf
[] = "--traditional-format ";
1602 obstack_grow (&obstack
, tf
, sizeof (tf
) - 1);
1603 obstack_grow0 (&obstack
, asm_spec
, strlen (asm_spec
));
1604 asm_spec
= XOBFINISH (&obstack
, const char *);
1608 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \
1609 defined LINKER_HASH_STYLE
1610 # ifdef LINK_BUILDID_SPEC
1611 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1612 obstack_grow (&obstack
, LINK_BUILDID_SPEC
, sizeof (LINK_BUILDID_SPEC
) - 1);
1614 # ifdef LINK_EH_SPEC
1615 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1616 obstack_grow (&obstack
, LINK_EH_SPEC
, sizeof (LINK_EH_SPEC
) - 1);
1618 # ifdef LINKER_HASH_STYLE
1619 /* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had
1622 static const char hash_style
[] = "--hash-style=";
1623 obstack_grow (&obstack
, hash_style
, sizeof (hash_style
) - 1);
1624 obstack_grow (&obstack
, LINKER_HASH_STYLE
, sizeof (LINKER_HASH_STYLE
) - 1);
1625 obstack_1grow (&obstack
, ' ');
1628 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
1629 link_spec
= XOBFINISH (&obstack
, const char *);
1635 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1636 removed; If the spec starts with a + then SPEC is added to the end of the
1640 set_spec (const char *name
, const char *spec
, bool user_p
)
1642 struct spec_list
*sl
;
1643 const char *old_spec
;
1644 int name_len
= strlen (name
);
1647 /* If this is the first call, initialize the statically allocated specs. */
1650 struct spec_list
*next
= (struct spec_list
*) 0;
1651 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1653 sl
= &static_specs
[i
];
1660 /* See if the spec already exists. */
1661 for (sl
= specs
; sl
; sl
= sl
->next
)
1662 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, name
))
1667 /* Not found - make it. */
1668 sl
= XNEW (struct spec_list
);
1669 sl
->name
= xstrdup (name
);
1670 sl
->name_len
= name_len
;
1671 sl
->ptr_spec
= &sl
->ptr
;
1673 *(sl
->ptr_spec
) = "";
1678 old_spec
= *(sl
->ptr_spec
);
1679 *(sl
->ptr_spec
) = ((spec
[0] == '+' && ISSPACE ((unsigned char)spec
[1]))
1680 ? concat (old_spec
, spec
+ 1, NULL
)
1685 fnotice (stderr
, "Setting spec %s to '%s'\n\n", name
, *(sl
->ptr_spec
));
1688 /* Free the old spec. */
1689 if (old_spec
&& sl
->alloc_p
)
1690 free (CONST_CAST (char *, old_spec
));
1692 sl
->user_p
= user_p
;
1696 /* Accumulate a command (program name and args), and run it. */
1698 typedef const char *const_char_p
; /* For DEF_VEC_P. */
1700 /* Vector of pointers to arguments in the current line of specifications. */
1702 static vec
<const_char_p
> argbuf
;
1704 /* Position in the argbuf vector containing the name of the output file
1705 (the value associated with the "-o" flag). */
1707 static int have_o_argbuf_index
= 0;
1709 /* Were the options -c, -S or -E passed. */
1710 static int have_c
= 0;
1712 /* Was the option -o passed. */
1713 static int have_o
= 0;
1715 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1716 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1719 static struct temp_name
{
1720 const char *suffix
; /* suffix associated with the code. */
1721 int length
; /* strlen (suffix). */
1722 int unique
; /* Indicates whether %g or %u/%U was used. */
1723 const char *filename
; /* associated filename. */
1724 int filename_length
; /* strlen (filename). */
1725 struct temp_name
*next
;
1728 /* Number of commands executed so far. */
1730 static int execution_count
;
1732 /* Number of commands that exited with a signal. */
1734 static int signal_count
;
1736 /* Allocate the argument vector. */
1744 /* Clear out the vector of arguments (after a command is executed). */
1749 argbuf
.truncate (0);
1752 /* Add one argument to the vector at the end.
1753 This is done when a space is seen or at the end of the line.
1754 If DELETE_ALWAYS is nonzero, the arg is a filename
1755 and the file should be deleted eventually.
1756 If DELETE_FAILURE is nonzero, the arg is a filename
1757 and the file should be deleted if this compilation fails. */
1760 store_arg (const char *arg
, int delete_always
, int delete_failure
)
1762 argbuf
.safe_push (arg
);
1764 if (strcmp (arg
, "-o") == 0)
1765 have_o_argbuf_index
= argbuf
.length ();
1766 if (delete_always
|| delete_failure
)
1769 /* If the temporary file we should delete is specified as
1770 part of a joined argument extract the filename. */
1772 && (p
= strrchr (arg
, '=')))
1774 record_temp_file (arg
, delete_always
, delete_failure
);
1778 /* Load specs from a file name named FILENAME, replacing occurrences of
1779 various different types of line-endings, \r\n, \n\r and just \r, with
1783 load_specs (const char *filename
)
1787 struct stat statbuf
;
1794 fnotice (stderr
, "Reading specs from %s\n", filename
);
1796 /* Open and stat the file. */
1797 desc
= open (filename
, O_RDONLY
, 0);
1799 pfatal_with_name (filename
);
1800 if (stat (filename
, &statbuf
) < 0)
1801 pfatal_with_name (filename
);
1803 /* Read contents of file into BUFFER. */
1804 buffer
= XNEWVEC (char, statbuf
.st_size
+ 1);
1805 readlen
= read (desc
, buffer
, (unsigned) statbuf
.st_size
);
1807 pfatal_with_name (filename
);
1808 buffer
[readlen
] = 0;
1811 specs
= XNEWVEC (char, readlen
+ 1);
1813 for (buffer_p
= buffer
; buffer_p
&& *buffer_p
; buffer_p
++)
1819 if (buffer_p
> buffer
&& *(buffer_p
- 1) == '\n') /* \n\r */
1821 else if (*(buffer_p
+ 1) == '\n') /* \r\n */
1835 /* Read compilation specs from a file named FILENAME,
1836 replacing the default ones.
1838 A suffix which starts with `*' is a definition for
1839 one of the machine-specific sub-specs. The "suffix" should be
1840 *asm, *cc1, *cpp, *link, *startfile, etc.
1841 The corresponding spec is stored in asm_spec, etc.,
1842 rather than in the `compilers' vector.
1844 Anything invalid in the file is a fatal error. */
1847 read_specs (const char *filename
, bool main_p
, bool user_p
)
1852 buffer
= load_specs (filename
);
1854 /* Scan BUFFER for specs, putting them in the vector. */
1860 char *in
, *out
, *p1
, *p2
, *p3
;
1862 /* Advance P in BUFFER to the next nonblank nocomment line. */
1863 p
= skip_whitespace (p
);
1867 /* Is this a special command that starts with '%'? */
1868 /* Don't allow this for the main specs file, since it would
1869 encourage people to overwrite it. */
1870 if (*p
== '%' && !main_p
)
1873 while (*p
&& *p
!= '\n')
1879 if (!strncmp (p1
, "%include", sizeof ("%include") - 1)
1880 && (p1
[sizeof "%include" - 1] == ' '
1881 || p1
[sizeof "%include" - 1] == '\t'))
1885 p1
+= sizeof ("%include");
1886 while (*p1
== ' ' || *p1
== '\t')
1889 if (*p1
++ != '<' || p
[-2] != '>')
1890 fatal_error ("specs %%include syntax malformed after "
1892 (long) (p1
- buffer
+ 1));
1895 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1896 read_specs (new_filename
? new_filename
: p1
, false, user_p
);
1899 else if (!strncmp (p1
, "%include_noerr", sizeof "%include_noerr" - 1)
1900 && (p1
[sizeof "%include_noerr" - 1] == ' '
1901 || p1
[sizeof "%include_noerr" - 1] == '\t'))
1905 p1
+= sizeof "%include_noerr";
1906 while (*p1
== ' ' || *p1
== '\t')
1909 if (*p1
++ != '<' || p
[-2] != '>')
1910 fatal_error ("specs %%include syntax malformed after "
1912 (long) (p1
- buffer
+ 1));
1915 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1917 read_specs (new_filename
, false, user_p
);
1918 else if (verbose_flag
)
1919 fnotice (stderr
, "could not find specs file %s\n", p1
);
1922 else if (!strncmp (p1
, "%rename", sizeof "%rename" - 1)
1923 && (p1
[sizeof "%rename" - 1] == ' '
1924 || p1
[sizeof "%rename" - 1] == '\t'))
1927 struct spec_list
*sl
;
1928 struct spec_list
*newsl
;
1930 /* Get original name. */
1931 p1
+= sizeof "%rename";
1932 while (*p1
== ' ' || *p1
== '\t')
1935 if (! ISALPHA ((unsigned char) *p1
))
1936 fatal_error ("specs %%rename syntax malformed after "
1938 (long) (p1
- buffer
));
1941 while (*p2
&& !ISSPACE ((unsigned char) *p2
))
1944 if (*p2
!= ' ' && *p2
!= '\t')
1945 fatal_error ("specs %%rename syntax malformed after "
1947 (long) (p2
- buffer
));
1951 while (*p2
== ' ' || *p2
== '\t')
1954 if (! ISALPHA ((unsigned char) *p2
))
1955 fatal_error ("specs %%rename syntax malformed after "
1957 (long) (p2
- buffer
));
1959 /* Get new spec name. */
1961 while (*p3
&& !ISSPACE ((unsigned char) *p3
))
1965 fatal_error ("specs %%rename syntax malformed after "
1967 (long) (p3
- buffer
));
1970 for (sl
= specs
; sl
; sl
= sl
->next
)
1971 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, p1
))
1975 fatal_error ("specs %s spec was not found to be renamed", p1
);
1977 if (strcmp (p1
, p2
) == 0)
1980 for (newsl
= specs
; newsl
; newsl
= newsl
->next
)
1981 if (strcmp (newsl
->name
, p2
) == 0)
1982 fatal_error ("%s: attempt to rename spec %qs to "
1983 "already defined spec %qs",
1988 fnotice (stderr
, "rename spec %s to %s\n", p1
, p2
);
1990 fnotice (stderr
, "spec is '%s'\n\n", *(sl
->ptr_spec
));
1994 set_spec (p2
, *(sl
->ptr_spec
), user_p
);
1996 free (CONST_CAST (char *, *(sl
->ptr_spec
)));
1998 *(sl
->ptr_spec
) = "";
2003 fatal_error ("specs unknown %% command after %ld characters",
2004 (long) (p1
- buffer
));
2007 /* Find the colon that should end the suffix. */
2009 while (*p1
&& *p1
!= ':' && *p1
!= '\n')
2012 /* The colon shouldn't be missing. */
2014 fatal_error ("specs file malformed after %ld characters",
2015 (long) (p1
- buffer
));
2017 /* Skip back over trailing whitespace. */
2019 while (p2
> buffer
&& (p2
[-1] == ' ' || p2
[-1] == '\t'))
2022 /* Copy the suffix to a string. */
2023 suffix
= save_string (p
, p2
- p
);
2024 /* Find the next line. */
2025 p
= skip_whitespace (p1
+ 1);
2027 fatal_error ("specs file malformed after %ld characters",
2028 (long) (p
- buffer
));
2031 /* Find next blank line or end of string. */
2032 while (*p1
&& !(*p1
== '\n' && (p1
[1] == '\n' || p1
[1] == '\0')))
2035 /* Specs end at the blank line and do not include the newline. */
2036 spec
= save_string (p
, p1
- p
);
2039 /* Delete backslash-newline sequences from the spec. */
2044 if (in
[0] == '\\' && in
[1] == '\n')
2046 else if (in
[0] == '#')
2047 while (*in
&& *in
!= '\n')
2055 if (suffix
[0] == '*')
2057 if (! strcmp (suffix
, "*link_command"))
2058 link_command_spec
= spec
;
2060 set_spec (suffix
+ 1, spec
, user_p
);
2064 /* Add this pair to the vector. */
2066 = XRESIZEVEC (struct compiler
, compilers
, n_compilers
+ 2);
2068 compilers
[n_compilers
].suffix
= suffix
;
2069 compilers
[n_compilers
].spec
= spec
;
2071 memset (&compilers
[n_compilers
], 0, sizeof compilers
[n_compilers
]);
2075 link_command_spec
= spec
;
2078 if (link_command_spec
== 0)
2079 fatal_error ("spec file has no spec for linking");
2082 /* Record the names of temporary files we tell compilers to write,
2083 and delete them at the end of the run. */
2085 /* This is the common prefix we use to make temp file names.
2086 It is chosen once for each run of this program.
2087 It is substituted into a spec by %g or %j.
2088 Thus, all temp file names contain this prefix.
2089 In practice, all temp file names start with this prefix.
2091 This prefix comes from the envvar TMPDIR if it is defined;
2092 otherwise, from the P_tmpdir macro if that is defined;
2093 otherwise, in /usr/tmp or /tmp;
2094 or finally the current directory if all else fails. */
2096 static const char *temp_filename
;
2098 /* Length of the prefix. */
2100 static int temp_filename_length
;
2102 /* Define the list of temporary files to delete. */
2107 struct temp_file
*next
;
2110 /* Queue of files to delete on success or failure of compilation. */
2111 static struct temp_file
*always_delete_queue
;
2112 /* Queue of files to delete on failure of compilation. */
2113 static struct temp_file
*failure_delete_queue
;
2115 /* Record FILENAME as a file to be deleted automatically.
2116 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2117 otherwise delete it in any case.
2118 FAIL_DELETE nonzero means delete it if a compilation step fails;
2119 otherwise delete it in any case. */
2122 record_temp_file (const char *filename
, int always_delete
, int fail_delete
)
2124 char *const name
= xstrdup (filename
);
2128 struct temp_file
*temp
;
2129 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
2130 if (! filename_cmp (name
, temp
->name
))
2133 temp
= XNEW (struct temp_file
);
2134 temp
->next
= always_delete_queue
;
2136 always_delete_queue
= temp
;
2143 struct temp_file
*temp
;
2144 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
2145 if (! filename_cmp (name
, temp
->name
))
2151 temp
= XNEW (struct temp_file
);
2152 temp
->next
= failure_delete_queue
;
2154 failure_delete_queue
= temp
;
2160 /* Delete all the temporary files whose names we previously recorded. */
2162 #ifndef DELETE_IF_ORDINARY
2163 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2166 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2167 if (unlink (NAME) < 0) \
2169 perror_with_name (NAME); \
2174 delete_if_ordinary (const char *name
)
2180 printf ("Delete %s? (y or n) ", name
);
2184 while ((c
= getchar ()) != '\n' && c
!= EOF
)
2187 if (i
== 'y' || i
== 'Y')
2189 DELETE_IF_ORDINARY (name
, st
, verbose_flag
);
2193 delete_temp_files (void)
2195 struct temp_file
*temp
;
2197 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
2198 delete_if_ordinary (temp
->name
);
2199 always_delete_queue
= 0;
2202 /* Delete all the files to be deleted on error. */
2205 delete_failure_queue (void)
2207 struct temp_file
*temp
;
2209 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
2210 delete_if_ordinary (temp
->name
);
2214 clear_failure_queue (void)
2216 failure_delete_queue
= 0;
2219 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2221 If DO_MULTI is true iterate over the paths twice, first with multilib
2222 suffix then without, otherwise iterate over the paths once without
2223 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2224 to avoid visiting the same path twice, but we could do better. For
2225 instance, /usr/lib/../lib is considered different from /usr/lib.
2226 At least EXTRA_SPACE chars past the end of the path passed to
2227 CALLBACK are available for use by the callback.
2228 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2230 Returns the value returned by CALLBACK. */
2233 for_each_path (const struct path_prefix
*paths
,
2236 void *(*callback
) (char *, void *),
2237 void *callback_info
)
2239 struct prefix_list
*pl
;
2240 const char *multi_dir
= NULL
;
2241 const char *multi_os_dir
= NULL
;
2242 const char *multiarch_suffix
= NULL
;
2243 const char *multi_suffix
;
2244 const char *just_multi_suffix
;
2247 bool skip_multi_dir
= false;
2248 bool skip_multi_os_dir
= false;
2250 multi_suffix
= machine_suffix
;
2251 just_multi_suffix
= just_machine_suffix
;
2252 if (do_multi
&& multilib_dir
&& strcmp (multilib_dir
, ".") != 0)
2254 multi_dir
= concat (multilib_dir
, dir_separator_str
, NULL
);
2255 multi_suffix
= concat (multi_suffix
, multi_dir
, NULL
);
2256 just_multi_suffix
= concat (just_multi_suffix
, multi_dir
, NULL
);
2258 if (do_multi
&& multilib_os_dir
&& strcmp (multilib_os_dir
, ".") != 0)
2259 multi_os_dir
= concat (multilib_os_dir
, dir_separator_str
, NULL
);
2261 multiarch_suffix
= concat (multiarch_dir
, dir_separator_str
, NULL
);
2265 size_t multi_dir_len
= 0;
2266 size_t multi_os_dir_len
= 0;
2267 size_t multiarch_len
= 0;
2269 size_t just_suffix_len
;
2273 multi_dir_len
= strlen (multi_dir
);
2275 multi_os_dir_len
= strlen (multi_os_dir
);
2276 if (multiarch_suffix
)
2277 multiarch_len
= strlen (multiarch_suffix
);
2278 suffix_len
= strlen (multi_suffix
);
2279 just_suffix_len
= strlen (just_multi_suffix
);
2283 len
= paths
->max_len
+ extra_space
+ 1;
2284 len
+= MAX (MAX (suffix_len
, multi_os_dir_len
), multiarch_len
);
2285 path
= XNEWVEC (char, len
);
2288 for (pl
= paths
->plist
; pl
!= 0; pl
= pl
->next
)
2290 len
= strlen (pl
->prefix
);
2291 memcpy (path
, pl
->prefix
, len
);
2293 /* Look first in MACHINE/VERSION subdirectory. */
2294 if (!skip_multi_dir
)
2296 memcpy (path
+ len
, multi_suffix
, suffix_len
+ 1);
2297 ret
= callback (path
, callback_info
);
2302 /* Some paths are tried with just the machine (ie. target)
2303 subdir. This is used for finding as, ld, etc. */
2305 && pl
->require_machine_suffix
== 2)
2307 memcpy (path
+ len
, just_multi_suffix
, just_suffix_len
+ 1);
2308 ret
= callback (path
, callback_info
);
2313 /* Now try the multiarch path. */
2315 && !pl
->require_machine_suffix
&& multiarch_dir
)
2317 memcpy (path
+ len
, multiarch_suffix
, multiarch_len
+ 1);
2318 ret
= callback (path
, callback_info
);
2323 /* Now try the base path. */
2324 if (!pl
->require_machine_suffix
2325 && !(pl
->os_multilib
? skip_multi_os_dir
: skip_multi_dir
))
2327 const char *this_multi
;
2328 size_t this_multi_len
;
2330 if (pl
->os_multilib
)
2332 this_multi
= multi_os_dir
;
2333 this_multi_len
= multi_os_dir_len
;
2337 this_multi
= multi_dir
;
2338 this_multi_len
= multi_dir_len
;
2342 memcpy (path
+ len
, this_multi
, this_multi_len
+ 1);
2346 ret
= callback (path
, callback_info
);
2354 if (multi_dir
== NULL
&& multi_os_dir
== NULL
)
2357 /* Run through the paths again, this time without multilibs.
2358 Don't repeat any we have already seen. */
2361 free (CONST_CAST (char *, multi_dir
));
2363 free (CONST_CAST (char *, multi_suffix
));
2364 multi_suffix
= machine_suffix
;
2365 free (CONST_CAST (char *, just_multi_suffix
));
2366 just_multi_suffix
= just_machine_suffix
;
2369 skip_multi_dir
= true;
2372 free (CONST_CAST (char *, multi_os_dir
));
2373 multi_os_dir
= NULL
;
2376 skip_multi_os_dir
= true;
2381 free (CONST_CAST (char *, multi_dir
));
2382 free (CONST_CAST (char *, multi_suffix
));
2383 free (CONST_CAST (char *, just_multi_suffix
));
2386 free (CONST_CAST (char *, multi_os_dir
));
2392 /* Callback for build_search_list. Adds path to obstack being built. */
2394 struct add_to_obstack_info
{
2401 add_to_obstack (char *path
, void *data
)
2403 struct add_to_obstack_info
*info
= (struct add_to_obstack_info
*) data
;
2405 if (info
->check_dir
&& !is_directory (path
, false))
2408 if (!info
->first_time
)
2409 obstack_1grow (info
->ob
, PATH_SEPARATOR
);
2411 obstack_grow (info
->ob
, path
, strlen (path
));
2413 info
->first_time
= false;
2417 /* Add or change the value of an environment variable, outputting the
2418 change to standard error if in verbose mode. */
2420 xputenv (const char *string
)
2423 fnotice (stderr
, "%s\n", string
);
2424 putenv (CONST_CAST (char *, string
));
2427 /* Build a list of search directories from PATHS.
2428 PREFIX is a string to prepend to the list.
2429 If CHECK_DIR_P is true we ensure the directory exists.
2430 If DO_MULTI is true, multilib paths are output first, then
2432 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2433 It is also used by the --print-search-dirs flag. */
2436 build_search_list (const struct path_prefix
*paths
, const char *prefix
,
2437 bool check_dir
, bool do_multi
)
2439 struct add_to_obstack_info info
;
2441 info
.ob
= &collect_obstack
;
2442 info
.check_dir
= check_dir
;
2443 info
.first_time
= true;
2445 obstack_grow (&collect_obstack
, prefix
, strlen (prefix
));
2446 obstack_1grow (&collect_obstack
, '=');
2448 for_each_path (paths
, do_multi
, 0, add_to_obstack
, &info
);
2450 obstack_1grow (&collect_obstack
, '\0');
2451 return XOBFINISH (&collect_obstack
, char *);
2454 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2458 putenv_from_prefixes (const struct path_prefix
*paths
, const char *env_var
,
2461 xputenv (build_search_list (paths
, env_var
, true, do_multi
));
2464 /* Check whether NAME can be accessed in MODE. This is like access,
2465 except that it never considers directories to be executable. */
2468 access_check (const char *name
, int mode
)
2474 if (stat (name
, &st
) < 0
2475 || S_ISDIR (st
.st_mode
))
2479 return access (name
, mode
);
2482 /* Callback for find_a_file. Appends the file name to the directory
2483 path. If the resulting file exists in the right mode, return the
2484 full pathname to the file. */
2486 struct file_at_path_info
{
2495 file_at_path (char *path
, void *data
)
2497 struct file_at_path_info
*info
= (struct file_at_path_info
*) data
;
2498 size_t len
= strlen (path
);
2500 memcpy (path
+ len
, info
->name
, info
->name_len
);
2501 len
+= info
->name_len
;
2503 /* Some systems have a suffix for executable files.
2504 So try appending that first. */
2505 if (info
->suffix_len
)
2507 memcpy (path
+ len
, info
->suffix
, info
->suffix_len
+ 1);
2508 if (access_check (path
, info
->mode
) == 0)
2513 if (access_check (path
, info
->mode
) == 0)
2519 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2520 access to check permissions. If DO_MULTI is true, search multilib
2521 paths then non-multilib paths, otherwise do not search multilib paths.
2522 Return 0 if not found, otherwise return its name, allocated with malloc. */
2525 find_a_file (const struct path_prefix
*pprefix
, const char *name
, int mode
,
2528 struct file_at_path_info info
;
2530 #ifdef DEFAULT_ASSEMBLER
2531 if (! strcmp (name
, "as") && access (DEFAULT_ASSEMBLER
, mode
) == 0)
2532 return xstrdup (DEFAULT_ASSEMBLER
);
2535 #ifdef DEFAULT_LINKER
2536 if (! strcmp (name
, "ld") && access (DEFAULT_LINKER
, mode
) == 0)
2537 return xstrdup (DEFAULT_LINKER
);
2540 /* Determine the filename to execute (special case for absolute paths). */
2542 if (IS_ABSOLUTE_PATH (name
))
2544 if (access (name
, mode
) == 0)
2545 return xstrdup (name
);
2551 info
.suffix
= (mode
& X_OK
) != 0 ? HOST_EXECUTABLE_SUFFIX
: "";
2552 info
.name_len
= strlen (info
.name
);
2553 info
.suffix_len
= strlen (info
.suffix
);
2556 return (char*) for_each_path (pprefix
, do_multi
,
2557 info
.name_len
+ info
.suffix_len
,
2558 file_at_path
, &info
);
2561 /* Ranking of prefixes in the sort list. -B prefixes are put before
2564 enum path_prefix_priority
2566 PREFIX_PRIORITY_B_OPT
,
2567 PREFIX_PRIORITY_LAST
2570 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2571 order according to PRIORITY. Within each PRIORITY, new entries are
2574 If WARN is nonzero, we will warn if no file is found
2575 through this prefix. WARN should point to an int
2576 which will be set to 1 if this entry is used.
2578 COMPONENT is the value to be passed to update_path.
2580 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2581 the complete value of machine_suffix.
2582 2 means try both machine_suffix and just_machine_suffix. */
2585 add_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2586 const char *component
, /* enum prefix_priority */ int priority
,
2587 int require_machine_suffix
, int os_multilib
)
2589 struct prefix_list
*pl
, **prev
;
2592 for (prev
= &pprefix
->plist
;
2593 (*prev
) != NULL
&& (*prev
)->priority
<= priority
;
2594 prev
= &(*prev
)->next
)
2597 /* Keep track of the longest prefix. */
2599 prefix
= update_path (prefix
, component
);
2600 len
= strlen (prefix
);
2601 if (len
> pprefix
->max_len
)
2602 pprefix
->max_len
= len
;
2604 pl
= XNEW (struct prefix_list
);
2605 pl
->prefix
= prefix
;
2606 pl
->require_machine_suffix
= require_machine_suffix
;
2607 pl
->priority
= priority
;
2608 pl
->os_multilib
= os_multilib
;
2610 /* Insert after PREV. */
2615 /* Same as add_prefix, but prepending target_system_root to prefix. */
2616 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2618 add_sysrooted_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2619 const char *component
,
2620 /* enum prefix_priority */ int priority
,
2621 int require_machine_suffix
, int os_multilib
)
2623 if (!IS_ABSOLUTE_PATH (prefix
))
2624 fatal_error ("system path %qs is not absolute", prefix
);
2626 if (target_system_root
)
2628 char *sysroot_no_trailing_dir_separator
= xstrdup (target_system_root
);
2629 size_t sysroot_len
= strlen (target_system_root
);
2632 && target_system_root
[sysroot_len
- 1] == DIR_SEPARATOR
)
2633 sysroot_no_trailing_dir_separator
[sysroot_len
- 1] = '\0';
2635 if (target_sysroot_suffix
)
2636 prefix
= concat (sysroot_no_trailing_dir_separator
,
2637 target_sysroot_suffix
, prefix
, NULL
);
2639 prefix
= concat (sysroot_no_trailing_dir_separator
, prefix
, NULL
);
2641 free (sysroot_no_trailing_dir_separator
);
2643 /* We have to override this because GCC's notion of sysroot
2644 moves along with GCC. */
2648 add_prefix (pprefix
, prefix
, component
, priority
,
2649 require_machine_suffix
, os_multilib
);
2652 /* Execute the command specified by the arguments on the current line of spec.
2653 When using pipes, this includes several piped-together commands
2654 with `|' between them.
2656 Return 0 if successful, -1 if failed. */
2662 int n_commands
; /* # of command. */
2664 struct pex_obj
*pex
;
2667 const char *prog
; /* program name. */
2668 const char **argv
; /* vector of args. */
2672 struct command
*commands
; /* each command buffer with above info. */
2674 gcc_assert (!processing_spec_function
);
2678 string
= find_a_file (&exec_prefixes
,
2679 argbuf
[0], X_OK
, false);
2682 insert_wrapper (wrapper_string
);
2685 /* Count # of piped commands. */
2686 for (n_commands
= 1, i
= 0; argbuf
.iterate (i
, &arg
); i
++)
2687 if (strcmp (arg
, "|") == 0)
2690 /* Get storage for each command. */
2691 commands
= (struct command
*) alloca (n_commands
* sizeof (struct command
));
2693 /* Split argbuf into its separate piped processes,
2694 and record info about each one.
2695 Also search for the programs that are to be run. */
2697 argbuf
.safe_push (0);
2699 commands
[0].prog
= argbuf
[0]; /* first command. */
2700 commands
[0].argv
= argbuf
.address ();
2702 if (!wrapper_string
)
2704 string
= find_a_file (&exec_prefixes
, commands
[0].prog
, X_OK
, false);
2705 commands
[0].argv
[0] = (string
) ? string
: commands
[0].argv
[0];
2708 for (n_commands
= 1, i
= 0; argbuf
.iterate (i
, &arg
); i
++)
2709 if (arg
&& strcmp (arg
, "|") == 0)
2710 { /* each command. */
2711 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2712 fatal_error ("-pipe not supported");
2714 argbuf
[i
] = 0; /* Termination of
2716 commands
[n_commands
].prog
= argbuf
[i
+ 1];
2717 commands
[n_commands
].argv
2718 = &(argbuf
.address ())[i
+ 1];
2719 string
= find_a_file (&exec_prefixes
, commands
[n_commands
].prog
,
2722 commands
[n_commands
].argv
[0] = string
;
2726 /* If -v, print what we are about to do, and maybe query. */
2730 /* For help listings, put a blank line between sub-processes. */
2731 if (print_help_list
)
2732 fputc ('\n', stderr
);
2734 /* Print each piped command as a separate line. */
2735 for (i
= 0; i
< n_commands
; i
++)
2737 const char *const *j
;
2739 if (verbose_only_flag
)
2741 for (j
= commands
[i
].argv
; *j
; j
++)
2744 for (p
= *j
; *p
; ++p
)
2745 if (!ISALNUM ((unsigned char) *p
)
2746 && *p
!= '_' && *p
!= '/' && *p
!= '-' && *p
!= '.')
2750 fprintf (stderr
, " \"");
2751 for (p
= *j
; *p
; ++p
)
2753 if (*p
== '"' || *p
== '\\' || *p
== '$')
2754 fputc ('\\', stderr
);
2757 fputc ('"', stderr
);
2759 /* If it's empty, print "". */
2761 fprintf (stderr
, " \"\"");
2763 fprintf (stderr
, " %s", *j
);
2767 for (j
= commands
[i
].argv
; *j
; j
++)
2768 /* If it's empty, print "". */
2770 fprintf (stderr
, " \"\"");
2772 fprintf (stderr
, " %s", *j
);
2774 /* Print a pipe symbol after all but the last command. */
2775 if (i
+ 1 != n_commands
)
2776 fprintf (stderr
, " |");
2777 fprintf (stderr
, "\n");
2780 if (verbose_only_flag
!= 0)
2782 /* verbose_only_flag should act as if the spec was
2783 executed, so increment execution_count before
2784 returning. This prevents spurious warnings about
2785 unused linker input files, etc. */
2790 fnotice (stderr
, "\nGo ahead? (y or n) ");
2794 while (getchar () != '\n')
2797 if (i
!= 'y' && i
!= 'Y')
2802 #ifdef ENABLE_VALGRIND_CHECKING
2803 /* Run the each command through valgrind. To simplify prepending the
2804 path to valgrind and the option "-q" (for quiet operation unless
2805 something triggers), we allocate a separate argv array. */
2807 for (i
= 0; i
< n_commands
; i
++)
2813 for (argc
= 0; commands
[i
].argv
[argc
] != NULL
; argc
++)
2816 argv
= XALLOCAVEC (const char *, argc
+ 3);
2818 argv
[0] = VALGRIND_PATH
;
2820 for (j
= 2; j
< argc
+ 2; j
++)
2821 argv
[j
] = commands
[i
].argv
[j
- 2];
2824 commands
[i
].argv
= argv
;
2825 commands
[i
].prog
= argv
[0];
2829 /* Run each piped subprocess. */
2831 pex
= pex_init (PEX_USE_PIPES
| ((report_times
|| report_times_to_file
)
2832 ? PEX_RECORD_TIMES
: 0),
2833 progname
, temp_filename
);
2835 fatal_error ("pex_init failed: %m");
2837 for (i
= 0; i
< n_commands
; i
++)
2841 const char *string
= commands
[i
].argv
[0];
2843 errmsg
= pex_run (pex
,
2844 ((i
+ 1 == n_commands
? PEX_LAST
: 0)
2845 | (string
== commands
[i
].prog
? PEX_SEARCH
: 0)),
2846 string
, CONST_CAST (char **, commands
[i
].argv
),
2851 fatal_error (errmsg
);
2855 pfatal_with_name (errmsg
);
2859 if (string
!= commands
[i
].prog
)
2860 free (CONST_CAST (char *, string
));
2865 /* Wait for all the subprocesses to finish. */
2869 struct pex_time
*times
= NULL
;
2872 statuses
= (int *) alloca (n_commands
* sizeof (int));
2873 if (!pex_get_status (pex
, n_commands
, statuses
))
2874 fatal_error ("failed to get exit status: %m");
2876 if (report_times
|| report_times_to_file
)
2878 times
= (struct pex_time
*) alloca (n_commands
* sizeof (struct pex_time
));
2879 if (!pex_get_times (pex
, n_commands
, times
))
2880 fatal_error ("failed to get process times: %m");
2885 for (i
= 0; i
< n_commands
; ++i
)
2887 int status
= statuses
[i
];
2889 if (WIFSIGNALED (status
))
2892 /* SIGPIPE is a special case. It happens in -pipe mode
2893 when the compiler dies before the preprocessor is done,
2894 or the assembler dies before the compiler is done.
2895 There's generally been an error already, and this is
2896 just fallout. So don't generate another error unless
2897 we would otherwise have succeeded. */
2898 if (WTERMSIG (status
) == SIGPIPE
2899 && (signal_count
|| greatest_status
>= MIN_FATAL_STATUS
))
2906 internal_error ("%s (program %s)",
2907 strsignal (WTERMSIG (status
)), commands
[i
].prog
);
2909 else if (WIFEXITED (status
)
2910 && WEXITSTATUS (status
) >= MIN_FATAL_STATUS
)
2912 if (WEXITSTATUS (status
) > greatest_status
)
2913 greatest_status
= WEXITSTATUS (status
);
2917 if (report_times
|| report_times_to_file
)
2919 struct pex_time
*pt
= ×
[i
];
2922 ut
= ((double) pt
->user_seconds
2923 + (double) pt
->user_microseconds
/ 1.0e6
);
2924 st
= ((double) pt
->system_seconds
2925 + (double) pt
->system_microseconds
/ 1.0e6
);
2930 fnotice (stderr
, "# %s %.2f %.2f\n",
2931 commands
[i
].prog
, ut
, st
);
2933 if (report_times_to_file
)
2936 const char *const *j
;
2938 fprintf (report_times_to_file
, "%g %g", ut
, st
);
2940 for (j
= &commands
[i
].prog
; *j
; j
= &commands
[i
].argv
[++c
])
2943 for (p
= *j
; *p
; ++p
)
2944 if (*p
== '"' || *p
== '\\' || *p
== '$'
2950 fprintf (report_times_to_file
, " \"");
2951 for (p
= *j
; *p
; ++p
)
2953 if (*p
== '"' || *p
== '\\' || *p
== '$')
2954 fputc ('\\', report_times_to_file
);
2955 fputc (*p
, report_times_to_file
);
2957 fputc ('"', report_times_to_file
);
2960 fprintf (report_times_to_file
, " %s", *j
);
2963 fputc ('\n', report_times_to_file
);
2973 /* Find all the switches given to us
2974 and make a vector describing them.
2975 The elements of the vector are strings, one per switch given.
2976 If a switch uses following arguments, then the `part1' field
2977 is the switch itself and the `args' field
2978 is a null-terminated vector containing the following arguments.
2979 Bits in the `live_cond' field are:
2980 SWITCH_LIVE to indicate this switch is true in a conditional spec.
2981 SWITCH_FALSE to indicate this switch is overridden by a later switch.
2982 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
2983 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
2984 in all do_spec calls afterwards. Used for %<S from self specs.
2985 The `validated' field is nonzero if any spec has looked at this switch;
2986 if it remains zero at the end of the run, it must be meaningless. */
2988 #define SWITCH_LIVE (1 << 0)
2989 #define SWITCH_FALSE (1 << 1)
2990 #define SWITCH_IGNORE (1 << 2)
2991 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
2992 #define SWITCH_KEEP_FOR_GCC (1 << 4)
2998 unsigned int live_cond
;
3004 static struct switchstr
*switches
;
3006 static int n_switches
;
3008 static int n_switches_alloc
;
3010 /* Set to zero if -fcompare-debug is disabled, positive if it's
3011 enabled and we're running the first compilation, negative if it's
3012 enabled and we're running the second compilation. For most of the
3013 time, it's in the range -1..1, but it can be temporarily set to 2
3014 or 3 to indicate that the -fcompare-debug flags didn't come from
3015 the command-line, but rather from the GCC_COMPARE_DEBUG environment
3016 variable, until a synthesized -fcompare-debug flag is added to the
3020 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
3021 int compare_debug_second
;
3023 /* Set to the flags that should be passed to the second compilation in
3024 a -fcompare-debug compilation. */
3025 const char *compare_debug_opt
;
3027 static struct switchstr
*switches_debug_check
[2];
3029 static int n_switches_debug_check
[2];
3031 static int n_switches_alloc_debug_check
[2];
3033 static char *debug_check_temp_file
[2];
3035 /* Language is one of three things:
3037 1) The name of a real programming language.
3038 2) NULL, indicating that no one has figured out
3040 3) '*', indicating that the file should be passed
3045 const char *language
;
3046 struct compiler
*incompiler
;
3051 /* Also a vector of input files specified. */
3053 static struct infile
*infiles
;
3057 static int n_infiles_alloc
;
3059 /* True if multiple input files are being compiled to a single
3062 static bool combine_inputs
;
3064 /* This counts the number of libraries added by lang_specific_driver, so that
3065 we can tell if there were any user supplied any files or libraries. */
3067 static int added_libraries
;
3069 /* And a vector of corresponding output files is made up later. */
3071 const char **outfiles
;
3073 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3075 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
3076 is true if we should look for an executable suffix. DO_OBJ
3077 is true if we should look for an object suffix. */
3080 convert_filename (const char *name
, int do_exe ATTRIBUTE_UNUSED
,
3081 int do_obj ATTRIBUTE_UNUSED
)
3083 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3091 len
= strlen (name
);
3093 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3094 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
3095 if (do_obj
&& len
> 2
3096 && name
[len
- 2] == '.'
3097 && name
[len
- 1] == 'o')
3099 obstack_grow (&obstack
, name
, len
- 2);
3100 obstack_grow0 (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
3101 name
= XOBFINISH (&obstack
, const char *);
3105 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3106 /* If there is no filetype, make it the executable suffix (which includes
3107 the "."). But don't get confused if we have just "-o". */
3108 if (! do_exe
|| TARGET_EXECUTABLE_SUFFIX
[0] == 0 || (len
== 2 && name
[0] == '-'))
3111 for (i
= len
- 1; i
>= 0; i
--)
3112 if (IS_DIR_SEPARATOR (name
[i
]))
3115 for (i
++; i
< len
; i
++)
3119 obstack_grow (&obstack
, name
, len
);
3120 obstack_grow0 (&obstack
, TARGET_EXECUTABLE_SUFFIX
,
3121 strlen (TARGET_EXECUTABLE_SUFFIX
));
3122 name
= XOBFINISH (&obstack
, const char *);
3129 /* Display the command line switches accepted by gcc. */
3133 printf (_("Usage: %s [options] file...\n"), progname
);
3134 fputs (_("Options:\n"), stdout
);
3136 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout
);
3137 fputs (_(" --help Display this information\n"), stdout
);
3138 fputs (_(" --target-help Display target specific command line options\n"), stdout
);
3139 fputs (_(" --help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumented}}[,...]\n"), stdout
);
3140 fputs (_(" Display specific types of command line options\n"), stdout
);
3142 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout
);
3143 fputs (_(" --version Display compiler version information\n"), stdout
);
3144 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout
);
3145 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout
);
3146 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout
);
3147 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout
);
3148 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout
);
3149 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout
);
3150 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout
);
3152 -print-multiarch Display the target's normalized GNU triplet, used as\n\
3153 a component in the library path\n"), stdout
);
3154 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout
);
3156 -print-multi-lib Display the mapping between command line options and\n\
3157 multiple library search directories\n"), stdout
);
3158 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout
);
3159 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout
);
3160 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout
);
3161 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout
);
3162 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout
);
3163 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout
);
3164 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout
);
3165 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout
);
3166 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout
);
3167 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout
);
3168 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout
);
3170 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
3171 prefixes to other gcc components\n"), stdout
);
3172 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout
);
3173 fputs (_(" -time Time the execution of each subprocess\n"), stdout
);
3174 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout
);
3175 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout
);
3177 --sysroot=<directory> Use <directory> as the root directory for headers\n\
3178 and libraries\n"), stdout
);
3179 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout
);
3180 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout
);
3181 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout
);
3182 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout
);
3183 fputs (_(" -S Compile only; do not assemble or link\n"), stdout
);
3184 fputs (_(" -c Compile and assemble, but do not link\n"), stdout
);
3185 fputs (_(" -o <file> Place the output into <file>\n"), stdout
);
3186 fputs (_(" -pie Create a position independent executable\n"), stdout
);
3187 fputs (_(" -shared Create a shared library\n"), stdout
);
3189 -x <language> Specify the language of the following input files\n\
3190 Permissible languages include: c c++ assembler none\n\
3191 'none' means revert to the default behavior of\n\
3192 guessing the language based on the file's extension\n\
3196 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3197 passed on to the various sub-processes invoked by %s. In order to pass\n\
3198 other options on to these processes the -W<letter> options must be used.\n\
3201 /* The rest of the options are displayed by invocations of the various
3206 add_preprocessor_option (const char *option
, int len
)
3208 preprocessor_options
.safe_push (save_string (option
, len
));
3212 add_assembler_option (const char *option
, int len
)
3214 assembler_options
.safe_push (save_string (option
, len
));
3218 add_linker_option (const char *option
, int len
)
3220 linker_options
.safe_push (save_string (option
, len
));
3223 /* Allocate space for an input file in infiles. */
3228 if (n_infiles_alloc
== 0)
3230 n_infiles_alloc
= 16;
3231 infiles
= XNEWVEC (struct infile
, n_infiles_alloc
);
3233 else if (n_infiles_alloc
== n_infiles
)
3235 n_infiles_alloc
*= 2;
3236 infiles
= XRESIZEVEC (struct infile
, infiles
, n_infiles_alloc
);
3240 /* Store an input file with the given NAME and LANGUAGE in
3244 add_infile (const char *name
, const char *language
)
3247 infiles
[n_infiles
].name
= name
;
3248 infiles
[n_infiles
++].language
= language
;
3251 /* Allocate space for a switch in switches. */
3256 if (n_switches_alloc
== 0)
3258 n_switches_alloc
= 16;
3259 switches
= XNEWVEC (struct switchstr
, n_switches_alloc
);
3261 else if (n_switches_alloc
== n_switches
)
3263 n_switches_alloc
*= 2;
3264 switches
= XRESIZEVEC (struct switchstr
, switches
, n_switches_alloc
);
3268 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3269 as validated if VALIDATED and KNOWN if it is an internal switch. */
3272 save_switch (const char *opt
, size_t n_args
, const char *const *args
,
3273 bool validated
, bool known
)
3276 switches
[n_switches
].part1
= opt
+ 1;
3278 switches
[n_switches
].args
= 0;
3281 switches
[n_switches
].args
= XNEWVEC (const char *, n_args
+ 1);
3282 memcpy (switches
[n_switches
].args
, args
, n_args
* sizeof (const char *));
3283 switches
[n_switches
].args
[n_args
] = NULL
;
3286 switches
[n_switches
].live_cond
= 0;
3287 switches
[n_switches
].validated
= validated
;
3288 switches
[n_switches
].known
= known
;
3289 switches
[n_switches
].ordering
= 0;
3293 /* Handle an option DECODED that is unknown to the option-processing
3297 driver_unknown_option_callback (const struct cl_decoded_option
*decoded
)
3299 const char *opt
= decoded
->arg
;
3300 if (opt
[1] == 'W' && opt
[2] == 'n' && opt
[3] == 'o' && opt
[4] == '-'
3301 && !(decoded
->errors
& CL_ERR_NEGATIVE
))
3303 /* Leave unknown -Wno-* options for the compiler proper, to be
3304 diagnosed only if there are warnings. */
3305 save_switch (decoded
->canonical_option
[0],
3306 decoded
->canonical_option_num_elements
- 1,
3307 &decoded
->canonical_option
[1], false, true);
3310 if (decoded
->opt_index
== OPT_SPECIAL_unknown
)
3312 /* Give it a chance to define it a a spec file. */
3313 save_switch (decoded
->canonical_option
[0],
3314 decoded
->canonical_option_num_elements
- 1,
3315 &decoded
->canonical_option
[1], false, false);
3322 /* Handle an option DECODED that is not marked as CL_DRIVER.
3323 LANG_MASK will always be CL_DRIVER. */
3326 driver_wrong_lang_callback (const struct cl_decoded_option
*decoded
,
3327 unsigned int lang_mask ATTRIBUTE_UNUSED
)
3329 /* At this point, non-driver options are accepted (and expected to
3330 be passed down by specs) unless marked to be rejected by the
3331 driver. Options to be rejected by the driver but accepted by the
3332 compilers proper are treated just like completely unknown
3334 const struct cl_option
*option
= &cl_options
[decoded
->opt_index
];
3336 if (option
->cl_reject_driver
)
3337 error ("unrecognized command line option %qs",
3338 decoded
->orig_option_with_args_text
);
3340 save_switch (decoded
->canonical_option
[0],
3341 decoded
->canonical_option_num_elements
- 1,
3342 &decoded
->canonical_option
[1], false, true);
3345 static const char *spec_lang
= 0;
3346 static int last_language_n_infiles
;
3348 /* Handle a driver option; arguments and return value as for
3352 driver_handle_option (struct gcc_options
*opts
,
3353 struct gcc_options
*opts_set
,
3354 const struct cl_decoded_option
*decoded
,
3355 unsigned int lang_mask ATTRIBUTE_UNUSED
, int kind
,
3357 const struct cl_option_handlers
*handlers ATTRIBUTE_UNUSED
,
3358 diagnostic_context
*dc
)
3360 size_t opt_index
= decoded
->opt_index
;
3361 const char *arg
= decoded
->arg
;
3362 const char *compare_debug_replacement_opt
;
3363 int value
= decoded
->value
;
3364 bool validated
= false;
3365 bool do_save
= true;
3367 gcc_assert (opts
== &global_options
);
3368 gcc_assert (opts_set
== &global_options_set
);
3369 gcc_assert (kind
== DK_UNSPECIFIED
);
3370 gcc_assert (loc
== UNKNOWN_LOCATION
);
3371 gcc_assert (dc
== global_dc
);
3377 struct spec_list
*sl
;
3379 for (sl
= specs
; sl
; sl
= sl
->next
)
3380 printf ("*%s:\n%s\n\n", sl
->name
, *(sl
->ptr_spec
));
3381 if (link_command_spec
)
3382 printf ("*link_command:\n%s\n\n", link_command_spec
);
3386 case OPT_dumpversion
:
3387 printf ("%s\n", spec_version
);
3390 case OPT_dumpmachine
:
3391 printf ("%s\n", spec_machine
);
3397 /* CPP driver cannot obtain switch from cc1_options. */
3399 add_preprocessor_option ("--version", strlen ("--version"));
3400 add_assembler_option ("--version", strlen ("--version"));
3401 add_linker_option ("--version", strlen ("--version"));
3405 print_help_list
= 1;
3407 /* CPP driver cannot obtain switch from cc1_options. */
3409 add_preprocessor_option ("--help", 6);
3410 add_assembler_option ("--help", 6);
3411 add_linker_option ("--help", 6);
3415 print_subprocess_help
= 2;
3418 case OPT__target_help
:
3419 print_subprocess_help
= 1;
3421 /* CPP driver cannot obtain switch from cc1_options. */
3423 add_preprocessor_option ("--target-help", 13);
3424 add_assembler_option ("--target-help", 13);
3425 add_linker_option ("--target-help", 13);
3428 case OPT__no_sysroot_suffix
:
3429 case OPT_pass_exit_codes
:
3430 case OPT_print_search_dirs
:
3431 case OPT_print_file_name_
:
3432 case OPT_print_prog_name_
:
3433 case OPT_print_multi_lib
:
3434 case OPT_print_multi_directory
:
3435 case OPT_print_sysroot
:
3436 case OPT_print_multi_os_directory
:
3437 case OPT_print_multiarch
:
3438 case OPT_print_sysroot_headers_suffix
:
3441 /* These options set the variables specified in common.opt
3442 automatically, and do not need to be saved for spec
3447 case OPT_print_libgcc_file_name
:
3448 print_file_name
= "libgcc.a";
3452 case OPT_fuse_ld_bfd
:
3456 case OPT_fuse_ld_gold
:
3460 case OPT_fcompare_debug_second
:
3461 compare_debug_second
= 1;
3464 case OPT_fcompare_debug
:
3468 compare_debug_replacement_opt
= "-fcompare-debug=";
3470 goto compare_debug_with_arg
;
3473 compare_debug_replacement_opt
= "-fcompare-debug=-gtoggle";
3475 goto compare_debug_with_arg
;
3482 case OPT_fcompare_debug_
:
3483 compare_debug_replacement_opt
= decoded
->canonical_option
[0];
3484 compare_debug_with_arg
:
3485 gcc_assert (decoded
->canonical_option_num_elements
== 1);
3486 gcc_assert (arg
!= NULL
);
3491 if (compare_debug
< 0)
3492 compare_debug_opt
= NULL
;
3494 compare_debug_opt
= arg
;
3495 save_switch (compare_debug_replacement_opt
, 0, NULL
, validated
, true);
3501 /* Pass the rest of this option to the assembler. */
3503 /* Split the argument at commas. */
3505 for (j
= 0; arg
[j
]; j
++)
3508 add_assembler_option (arg
+ prev
, j
- prev
);
3512 /* Record the part after the last comma. */
3513 add_assembler_option (arg
+ prev
, j
- prev
);
3521 /* Pass the rest of this option to the preprocessor. */
3523 /* Split the argument at commas. */
3525 for (j
= 0; arg
[j
]; j
++)
3528 add_preprocessor_option (arg
+ prev
, j
- prev
);
3532 /* Record the part after the last comma. */
3533 add_preprocessor_option (arg
+ prev
, j
- prev
);
3541 /* Split the argument at commas. */
3543 for (j
= 0; arg
[j
]; j
++)
3546 add_infile (save_string (arg
+ prev
, j
- prev
), "*");
3549 /* Record the part after the last comma. */
3550 add_infile (arg
+ prev
, "*");
3556 add_infile (arg
, "*");
3560 case OPT_Xpreprocessor
:
3561 add_preprocessor_option (arg
, strlen (arg
));
3565 case OPT_Xassembler
:
3566 add_assembler_option (arg
, strlen (arg
));
3571 /* POSIX allows separation of -l and the lib arg; canonicalize
3572 by concatenating -l with its arg */
3573 add_infile (concat ("-l", arg
, NULL
), "*");
3578 /* Similarly, canonicalize -L for linkers that may not accept
3579 separate arguments. */
3580 save_switch (concat ("-L", arg
, NULL
), 0, NULL
, validated
, true);
3585 save_switch (concat ("-F", arg
, NULL
), 0, NULL
, validated
, true);
3588 case OPT_save_temps
:
3589 save_temps_flag
= SAVE_TEMPS_CWD
;
3593 case OPT_save_temps_
:
3594 if (strcmp (arg
, "cwd") == 0)
3595 save_temps_flag
= SAVE_TEMPS_CWD
;
3596 else if (strcmp (arg
, "obj") == 0
3597 || strcmp (arg
, "object") == 0)
3598 save_temps_flag
= SAVE_TEMPS_OBJ
;
3600 fatal_error ("%qs is an unknown -save-temps option",
3601 decoded
->orig_option_with_args_text
);
3604 case OPT_no_canonical_prefixes
:
3605 /* Already handled as a special case, so ignored here. */
3611 /* These options set the variables specified in common.opt
3612 automatically, but do need to be saved for spec
3618 struct user_specs
*user
= XNEW (struct user_specs
);
3620 user
->next
= (struct user_specs
*) 0;
3621 user
->filename
= arg
;
3622 if (user_specs_tail
)
3623 user_specs_tail
->next
= user
;
3625 user_specs_head
= user
;
3626 user_specs_tail
= user
;
3632 target_system_root
= arg
;
3633 target_system_root_changed
= 1;
3638 if (report_times_to_file
)
3639 fclose (report_times_to_file
);
3640 report_times_to_file
= fopen (arg
, "a");
3646 This is similar to -v except that there is no execution
3647 of the commands and the echoed arguments are quoted. It
3648 is intended for use in shell scripts to capture the
3649 driver-generated command line. */
3650 verbose_only_flag
++;
3657 size_t len
= strlen (arg
);
3659 /* Catch the case where the user has forgotten to append a
3660 directory separator to the path. Note, they may be using
3661 -B to add an executable name prefix, eg "i386-elf-", in
3662 order to distinguish between multiple installations of
3663 GCC in the same directory. Hence we must check to see
3664 if appending a directory separator actually makes a
3665 valid directory name. */
3666 if (!IS_DIR_SEPARATOR (arg
[len
- 1])
3667 && is_directory (arg
, false))
3669 char *tmp
= XNEWVEC (char, len
+ 2);
3671 tmp
[len
] = DIR_SEPARATOR
;
3676 add_prefix (&exec_prefixes
, arg
, NULL
,
3677 PREFIX_PRIORITY_B_OPT
, 0, 0);
3678 add_prefix (&startfile_prefixes
, arg
, NULL
,
3679 PREFIX_PRIORITY_B_OPT
, 0, 0);
3680 add_prefix (&include_prefixes
, arg
, NULL
,
3681 PREFIX_PRIORITY_B_OPT
, 0, 0);
3688 if (!strcmp (spec_lang
, "none"))
3689 /* Suppress the warning if -xnone comes after the last input
3690 file, because alternate command interfaces like g++ might
3691 find it useful to place -xnone after each input file. */
3694 last_language_n_infiles
= n_infiles
;
3700 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3701 arg
= convert_filename (arg
, ! have_c
, 0);
3703 /* Save the output name in case -save-temps=obj was used. */
3704 save_temps_prefix
= xstrdup (arg
);
3705 /* On some systems, ld cannot handle "-o" without a space. So
3706 split the option from its argument. */
3707 save_switch ("-o", 1, &arg
, validated
, true);
3710 case OPT_static_libgcc
:
3711 case OPT_shared_libgcc
:
3712 case OPT_static_libgfortran
:
3713 case OPT_static_libstdc__
:
3714 /* These are always valid, since gcc.c itself understands the
3715 first two, gfortranspec.c understands -static-libgfortran and
3716 g++spec.c understands -static-libstdc++ */
3725 /* Various driver options need no special processing at this
3726 point, having been handled in a prescan above or being
3727 handled by specs. */
3732 save_switch (decoded
->canonical_option
[0],
3733 decoded
->canonical_option_num_elements
- 1,
3734 &decoded
->canonical_option
[1], validated
, true);
3738 /* Put the driver's standard set of option handlers in *HANDLERS. */
3741 set_option_handlers (struct cl_option_handlers
*handlers
)
3743 handlers
->unknown_option_callback
= driver_unknown_option_callback
;
3744 handlers
->wrong_lang_callback
= driver_wrong_lang_callback
;
3745 handlers
->num_handlers
= 3;
3746 handlers
->handlers
[0].handler
= driver_handle_option
;
3747 handlers
->handlers
[0].mask
= CL_DRIVER
;
3748 handlers
->handlers
[1].handler
= common_handle_option
;
3749 handlers
->handlers
[1].mask
= CL_COMMON
;
3750 handlers
->handlers
[2].handler
= target_handle_option
;
3751 handlers
->handlers
[2].mask
= CL_TARGET
;
3754 /* Create the vector `switches' and its contents.
3755 Store its length in `n_switches'. */
3758 process_command (unsigned int decoded_options_count
,
3759 struct cl_decoded_option
*decoded_options
)
3763 char *tooldir_prefix
, *tooldir_prefix2
;
3764 char *(*get_relative_prefix
) (const char *, const char *,
3765 const char *) = NULL
;
3766 struct cl_option_handlers handlers
;
3769 gcc_exec_prefix
= getenv ("GCC_EXEC_PREFIX");
3773 added_libraries
= 0;
3775 /* Figure compiler version from version string. */
3777 compiler_version
= temp1
= xstrdup (version_string
);
3779 for (; *temp1
; ++temp1
)
3788 /* Handle any -no-canonical-prefixes flag early, to assign the function
3789 that builds relative prefixes. This function creates default search
3790 paths that are needed later in normal option handling. */
3792 for (j
= 1; j
< decoded_options_count
; j
++)
3794 if (decoded_options
[j
].opt_index
== OPT_no_canonical_prefixes
)
3796 get_relative_prefix
= make_relative_prefix_ignore_links
;
3800 if (! get_relative_prefix
)
3801 get_relative_prefix
= make_relative_prefix
;
3803 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3804 see if we can create it from the pathname specified in
3805 decoded_options[0].arg. */
3807 gcc_libexec_prefix
= standard_libexec_prefix
;
3809 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3810 if (!gcc_exec_prefix
)
3812 gcc_exec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3813 standard_bindir_prefix
,
3814 standard_exec_prefix
);
3815 gcc_libexec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3816 standard_bindir_prefix
,
3817 standard_libexec_prefix
);
3818 if (gcc_exec_prefix
)
3819 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix
, NULL
));
3823 /* make_relative_prefix requires a program name, but
3824 GCC_EXEC_PREFIX is typically a directory name with a trailing
3825 / (which is ignored by make_relative_prefix), so append a
3827 char *tmp_prefix
= concat (gcc_exec_prefix
, "gcc", NULL
);
3828 gcc_libexec_prefix
= get_relative_prefix (tmp_prefix
,
3829 standard_exec_prefix
,
3830 standard_libexec_prefix
);
3832 /* The path is unrelocated, so fallback to the original setting. */
3833 if (!gcc_libexec_prefix
)
3834 gcc_libexec_prefix
= standard_libexec_prefix
;
3840 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3841 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3842 or an automatically created GCC_EXEC_PREFIX from
3843 decoded_options[0].arg. */
3845 /* Do language-specific adjustment/addition of flags. */
3846 lang_specific_driver (&decoded_options
, &decoded_options_count
,
3849 if (gcc_exec_prefix
)
3851 int len
= strlen (gcc_exec_prefix
);
3853 if (len
> (int) sizeof ("/lib/gcc/") - 1
3854 && (IS_DIR_SEPARATOR (gcc_exec_prefix
[len
-1])))
3856 temp
= gcc_exec_prefix
+ len
- sizeof ("/lib/gcc/") + 1;
3857 if (IS_DIR_SEPARATOR (*temp
)
3858 && filename_ncmp (temp
+ 1, "lib", 3) == 0
3859 && IS_DIR_SEPARATOR (temp
[4])
3860 && filename_ncmp (temp
+ 5, "gcc", 3) == 0)
3861 len
-= sizeof ("/lib/gcc/") - 1;
3864 set_std_prefix (gcc_exec_prefix
, len
);
3865 add_prefix (&exec_prefixes
, gcc_libexec_prefix
, "GCC",
3866 PREFIX_PRIORITY_LAST
, 0, 0);
3867 add_prefix (&startfile_prefixes
, gcc_exec_prefix
, "GCC",
3868 PREFIX_PRIORITY_LAST
, 0, 0);
3871 /* COMPILER_PATH and LIBRARY_PATH have values
3872 that are lists of directory names with colons. */
3874 temp
= getenv ("COMPILER_PATH");
3877 const char *startp
, *endp
;
3878 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3880 startp
= endp
= temp
;
3883 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3885 strncpy (nstore
, startp
, endp
- startp
);
3887 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3888 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3890 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3891 nstore
[endp
- startp
+ 1] = 0;
3894 nstore
[endp
- startp
] = 0;
3895 add_prefix (&exec_prefixes
, nstore
, 0,
3896 PREFIX_PRIORITY_LAST
, 0, 0);
3897 add_prefix (&include_prefixes
, nstore
, 0,
3898 PREFIX_PRIORITY_LAST
, 0, 0);
3901 endp
= startp
= endp
+ 1;
3908 temp
= getenv (LIBRARY_PATH_ENV
);
3909 if (temp
&& *cross_compile
== '0')
3911 const char *startp
, *endp
;
3912 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3914 startp
= endp
= temp
;
3917 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3919 strncpy (nstore
, startp
, endp
- startp
);
3921 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3922 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3924 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3925 nstore
[endp
- startp
+ 1] = 0;
3928 nstore
[endp
- startp
] = 0;
3929 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3930 PREFIX_PRIORITY_LAST
, 0, 1);
3933 endp
= startp
= endp
+ 1;
3940 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3941 temp
= getenv ("LPATH");
3942 if (temp
&& *cross_compile
== '0')
3944 const char *startp
, *endp
;
3945 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3947 startp
= endp
= temp
;
3950 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3952 strncpy (nstore
, startp
, endp
- startp
);
3954 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3955 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3957 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3958 nstore
[endp
- startp
+ 1] = 0;
3961 nstore
[endp
- startp
] = 0;
3962 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3963 PREFIX_PRIORITY_LAST
, 0, 1);
3966 endp
= startp
= endp
+ 1;
3973 /* Process the options and store input files and switches in their
3976 last_language_n_infiles
= -1;
3978 set_option_handlers (&handlers
);
3980 for (j
= 1; j
< decoded_options_count
; j
++)
3982 switch (decoded_options
[j
].opt_index
)
3994 for (j
= 1; j
< decoded_options_count
; j
++)
3996 if (decoded_options
[j
].opt_index
== OPT_SPECIAL_input_file
)
3998 const char *arg
= decoded_options
[j
].arg
;
3999 const char *p
= strrchr (arg
, '@');
4003 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4004 arg
= convert_filename (arg
, 0, access (arg
, F_OK
));
4006 /* For LTO static archive support we handle input file
4007 specifications that are composed of a filename and
4008 an offset like FNAME@OFFSET. */
4011 && sscanf (p
, "@%li%n", &offset
, &consumed
) >= 1
4012 && strlen (p
) == (unsigned int)consumed
)
4014 fname
= (char *)xmalloc (p
- arg
+ 1);
4015 memcpy (fname
, arg
, p
- arg
);
4016 fname
[p
- arg
] = '\0';
4017 /* Only accept non-stdin and existing FNAME parts, otherwise
4018 try with the full name. */
4019 if (strcmp (fname
, "-") == 0 || access (fname
, F_OK
) < 0)
4022 fname
= xstrdup (arg
);
4026 fname
= xstrdup (arg
);
4028 if (strcmp (fname
, "-") != 0 && access (fname
, F_OK
) < 0)
4029 perror_with_name (fname
);
4031 add_infile (arg
, spec_lang
);
4037 read_cmdline_option (&global_options
, &global_options_set
,
4038 decoded_options
+ j
, UNKNOWN_LOCATION
,
4039 CL_DRIVER
, &handlers
, global_dc
);
4042 /* If -save-temps=obj and -o name, create the prefix to use for %b.
4043 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
4044 if (save_temps_flag
== SAVE_TEMPS_OBJ
&& save_temps_prefix
!= NULL
)
4046 save_temps_length
= strlen (save_temps_prefix
);
4047 temp
= strrchr (lbasename (save_temps_prefix
), '.');
4050 save_temps_length
-= strlen (temp
);
4051 save_temps_prefix
[save_temps_length
] = '\0';
4055 else if (save_temps_prefix
!= NULL
)
4057 free (save_temps_prefix
);
4058 save_temps_prefix
= NULL
;
4061 if (save_temps_flag
&& use_pipes
)
4063 /* -save-temps overrides -pipe, so that temp files are produced */
4064 if (save_temps_flag
)
4065 warning (0, "-pipe ignored because -save-temps specified");
4071 const char *gcd
= getenv ("GCC_COMPARE_DEBUG");
4073 if (gcd
&& gcd
[0] == '-')
4076 compare_debug_opt
= gcd
;
4078 else if (gcd
&& *gcd
&& strcmp (gcd
, "0"))
4081 compare_debug_opt
= "-gtoggle";
4084 else if (compare_debug
< 0)
4087 gcc_assert (!compare_debug_opt
);
4090 /* Set up the search paths. We add directories that we expect to
4091 contain GNU Toolchain components before directories specified by
4092 the machine description so that we will find GNU components (like
4093 the GNU assembler) before those of the host system. */
4095 /* If we don't know where the toolchain has been installed, use the
4096 configured-in locations. */
4097 if (!gcc_exec_prefix
)
4100 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "GCC",
4101 PREFIX_PRIORITY_LAST
, 1, 0);
4102 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "BINUTILS",
4103 PREFIX_PRIORITY_LAST
, 2, 0);
4104 add_prefix (&exec_prefixes
, standard_exec_prefix
, "BINUTILS",
4105 PREFIX_PRIORITY_LAST
, 2, 0);
4107 add_prefix (&startfile_prefixes
, standard_exec_prefix
, "BINUTILS",
4108 PREFIX_PRIORITY_LAST
, 1, 0);
4111 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix
));
4112 tooldir_prefix2
= concat (tooldir_base_prefix
, spec_machine
,
4113 dir_separator_str
, NULL
);
4115 /* Look for tools relative to the location from which the driver is
4116 running, or, if that is not available, the configured prefix. */
4118 = concat (gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
4119 spec_machine
, dir_separator_str
,
4120 spec_version
, dir_separator_str
, tooldir_prefix2
, NULL
);
4121 free (tooldir_prefix2
);
4123 add_prefix (&exec_prefixes
,
4124 concat (tooldir_prefix
, "bin", dir_separator_str
, NULL
),
4125 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 0);
4126 add_prefix (&startfile_prefixes
,
4127 concat (tooldir_prefix
, "lib", dir_separator_str
, NULL
),
4128 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 1);
4129 free (tooldir_prefix
);
4131 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
4132 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
4133 then consider it to relocate with the rest of the GCC installation
4134 if GCC_EXEC_PREFIX is set.
4135 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
4136 if (target_system_root
&& !target_system_root_changed
&& gcc_exec_prefix
)
4138 char *tmp_prefix
= get_relative_prefix (decoded_options
[0].arg
,
4139 standard_bindir_prefix
,
4140 target_system_root
);
4141 if (tmp_prefix
&& access_check (tmp_prefix
, F_OK
) == 0)
4143 target_system_root
= tmp_prefix
;
4144 target_system_root_changed
= 1;
4149 /* More prefixes are enabled in main, after we read the specs file
4150 and determine whether this is cross-compilation or not. */
4152 if (n_infiles
== last_language_n_infiles
&& spec_lang
!= 0)
4153 warning (0, "%<-x %s%> after last input file has no effect", spec_lang
);
4155 /* Synthesize -fcompare-debug flag from the GCC_COMPARE_DEBUG
4156 environment variable. */
4157 if (compare_debug
== 2 || compare_debug
== 3)
4159 const char *opt
= concat ("-fcompare-debug=", compare_debug_opt
, NULL
);
4160 save_switch (opt
, 0, NULL
, false, true);
4164 /* Ensure we only invoke each subprocess once. */
4165 if (print_subprocess_help
|| print_help_list
|| print_version
)
4169 /* Create a dummy input file, so that we can pass
4170 the help option on to the various sub-processes. */
4171 add_infile ("help-dummy", "c");
4175 switches
[n_switches
].part1
= 0;
4177 infiles
[n_infiles
].name
= 0;
4180 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4181 and place that in the environment. */
4184 set_collect_gcc_options (void)
4189 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4191 obstack_grow (&collect_obstack
, "COLLECT_GCC_OPTIONS=",
4192 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4195 for (i
= 0; (int) i
< n_switches
; i
++)
4197 const char *const *args
;
4200 obstack_grow (&collect_obstack
, " ", 1);
4204 /* Ignore elided switches. */
4205 if ((switches
[i
].live_cond
4206 & (SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
))
4210 obstack_grow (&collect_obstack
, "'-", 2);
4211 q
= switches
[i
].part1
;
4212 while ((p
= strchr (q
, '\'')))
4214 obstack_grow (&collect_obstack
, q
, p
- q
);
4215 obstack_grow (&collect_obstack
, "'\\''", 4);
4218 obstack_grow (&collect_obstack
, q
, strlen (q
));
4219 obstack_grow (&collect_obstack
, "'", 1);
4221 for (args
= switches
[i
].args
; args
&& *args
; args
++)
4223 obstack_grow (&collect_obstack
, " '", 2);
4225 while ((p
= strchr (q
, '\'')))
4227 obstack_grow (&collect_obstack
, q
, p
- q
);
4228 obstack_grow (&collect_obstack
, "'\\''", 4);
4231 obstack_grow (&collect_obstack
, q
, strlen (q
));
4232 obstack_grow (&collect_obstack
, "'", 1);
4235 obstack_grow (&collect_obstack
, "\0", 1);
4236 xputenv (XOBFINISH (&collect_obstack
, char *));
4239 /* Process a spec string, accumulating and running commands. */
4241 /* These variables describe the input file name.
4242 input_file_number is the index on outfiles of this file,
4243 so that the output file name can be stored for later use by %o.
4244 input_basename is the start of the part of the input file
4245 sans all directory names, and basename_length is the number
4246 of characters starting there excluding the suffix .c or whatever. */
4248 static const char *gcc_input_filename
;
4249 static int input_file_number
;
4250 size_t input_filename_length
;
4251 static int basename_length
;
4252 static int suffixed_basename_length
;
4253 static const char *input_basename
;
4254 static const char *input_suffix
;
4255 #ifndef HOST_LACKS_INODE_NUMBERS
4256 static struct stat input_stat
;
4258 static int input_stat_set
;
4260 /* The compiler used to process the current input file. */
4261 static struct compiler
*input_file_compiler
;
4263 /* These are variables used within do_spec and do_spec_1. */
4265 /* Nonzero if an arg has been started and not yet terminated
4266 (with space, tab or newline). */
4267 static int arg_going
;
4269 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4270 is a temporary file name. */
4271 static int delete_this_arg
;
4273 /* Nonzero means %w has been seen; the next arg to be terminated
4274 is the output file name of this compilation. */
4275 static int this_is_output_file
;
4277 /* Nonzero means %s has been seen; the next arg to be terminated
4278 is the name of a library file and we should try the standard
4279 search dirs for it. */
4280 static int this_is_library_file
;
4282 /* Nonzero means %T has been seen; the next arg to be terminated
4283 is the name of a linker script and we should try all of the
4284 standard search dirs for it. If it is found insert a --script
4285 command line switch and then substitute the full path in place,
4286 otherwise generate an error message. */
4287 static int this_is_linker_script
;
4289 /* Nonzero means that the input of this command is coming from a pipe. */
4290 static int input_from_pipe
;
4292 /* Nonnull means substitute this for any suffix when outputting a switches
4294 static const char *suffix_subst
;
4296 /* If there is an argument being accumulated, terminate it and store it. */
4299 end_going_arg (void)
4305 obstack_1grow (&obstack
, 0);
4306 string
= XOBFINISH (&obstack
, const char *);
4307 if (this_is_library_file
)
4308 string
= find_file (string
);
4309 if (this_is_linker_script
)
4311 char * full_script_path
= find_a_file (&startfile_prefixes
, string
, R_OK
, true);
4313 if (full_script_path
== NULL
)
4315 error ("unable to locate default linker script %qs in the library search paths", string
);
4316 /* Script was not found on search path. */
4319 store_arg ("--script", false, false);
4320 string
= full_script_path
;
4322 store_arg (string
, delete_this_arg
, this_is_output_file
);
4323 if (this_is_output_file
)
4324 outfiles
[input_file_number
] = string
;
4330 /* Parse the WRAPPER string which is a comma separated list of the command line
4331 and insert them into the beginning of argbuf. */
4334 insert_wrapper (const char *wrapper
)
4338 char *buf
= xstrdup (wrapper
);
4340 unsigned int old_length
= argbuf
.length ();
4348 while ((p
= strchr (p
, ',')) != NULL
);
4350 argbuf
.safe_grow (old_length
+ n
);
4351 memmove (argbuf
.address () + n
,
4353 old_length
* sizeof (const_char_p
));
4367 while ((p
= strchr (p
, ',')) != NULL
);
4368 gcc_assert (i
== n
);
4371 /* Process the spec SPEC and run the commands specified therein.
4372 Returns 0 if the spec is successfully processed; -1 if failed. */
4375 do_spec (const char *spec
)
4379 value
= do_spec_2 (spec
);
4381 /* Force out any unfinished command.
4382 If -pipe, this forces out the last command if it ended in `|'. */
4385 if (argbuf
.length () > 0
4386 && !strcmp (argbuf
.last (), "|"))
4389 set_collect_gcc_options ();
4391 if (argbuf
.length () > 0)
4399 do_spec_2 (const char *spec
)
4405 delete_this_arg
= 0;
4406 this_is_output_file
= 0;
4407 this_is_library_file
= 0;
4408 this_is_linker_script
= 0;
4409 input_from_pipe
= 0;
4410 suffix_subst
= NULL
;
4412 result
= do_spec_1 (spec
, 0, NULL
);
4420 /* Process the given spec string and add any new options to the end
4421 of the switches/n_switches array. */
4424 do_option_spec (const char *name
, const char *spec
)
4426 unsigned int i
, value_count
, value_len
;
4427 const char *p
, *q
, *value
;
4428 char *tmp_spec
, *tmp_spec_p
;
4430 if (configure_default_options
[0].name
== NULL
)
4433 for (i
= 0; i
< ARRAY_SIZE (configure_default_options
); i
++)
4434 if (strcmp (configure_default_options
[i
].name
, name
) == 0)
4436 if (i
== ARRAY_SIZE (configure_default_options
))
4439 value
= configure_default_options
[i
].value
;
4440 value_len
= strlen (value
);
4442 /* Compute the size of the final spec. */
4445 while ((p
= strstr (p
, "%(VALUE)")) != NULL
)
4451 /* Replace each %(VALUE) by the specified value. */
4452 tmp_spec
= (char *) alloca (strlen (spec
) + 1
4453 + value_count
* (value_len
- strlen ("%(VALUE)")));
4454 tmp_spec_p
= tmp_spec
;
4456 while ((p
= strstr (q
, "%(VALUE)")) != NULL
)
4458 memcpy (tmp_spec_p
, q
, p
- q
);
4459 tmp_spec_p
= tmp_spec_p
+ (p
- q
);
4460 memcpy (tmp_spec_p
, value
, value_len
);
4461 tmp_spec_p
+= value_len
;
4462 q
= p
+ strlen ("%(VALUE)");
4464 strcpy (tmp_spec_p
, q
);
4466 do_self_spec (tmp_spec
);
4469 /* Process the given spec string and add any new options to the end
4470 of the switches/n_switches array. */
4473 do_self_spec (const char *spec
)
4478 do_spec_1 (" ", 0, NULL
);
4480 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4481 do_self_specs adds the replacements to switches array, so it shouldn't
4482 be processed afterwards. */
4483 for (i
= 0; i
< n_switches
; i
++)
4484 if ((switches
[i
].live_cond
& SWITCH_IGNORE
))
4485 switches
[i
].live_cond
|= SWITCH_IGNORE_PERMANENTLY
;
4487 if (argbuf
.length () > 0)
4489 const char **argbuf_copy
;
4490 struct cl_decoded_option
*decoded_options
;
4491 struct cl_option_handlers handlers
;
4492 unsigned int decoded_options_count
;
4495 /* Create a copy of argbuf with a dummy argv[0] entry for
4496 decode_cmdline_options_to_array. */
4497 argbuf_copy
= XNEWVEC (const char *,
4498 argbuf
.length () + 1);
4499 argbuf_copy
[0] = "";
4500 memcpy (argbuf_copy
+ 1, argbuf
.address (),
4501 argbuf
.length () * sizeof (const char *));
4503 decode_cmdline_options_to_array (argbuf
.length () + 1,
4505 CL_DRIVER
, &decoded_options
,
4506 &decoded_options_count
);
4509 set_option_handlers (&handlers
);
4511 for (j
= 1; j
< decoded_options_count
; j
++)
4513 switch (decoded_options
[j
].opt_index
)
4515 case OPT_SPECIAL_input_file
:
4516 /* Specs should only generate options, not input
4518 if (strcmp (decoded_options
[j
].arg
, "-") != 0)
4519 fatal_error ("switch %qs does not start with %<-%>",
4520 decoded_options
[j
].arg
);
4522 fatal_error ("spec-generated switch is just %<-%>");
4525 case OPT_fcompare_debug_second
:
4526 case OPT_fcompare_debug
:
4527 case OPT_fcompare_debug_
:
4529 /* Avoid duplicate processing of some options from
4530 compare-debug specs; just save them here. */
4531 save_switch (decoded_options
[j
].canonical_option
[0],
4532 (decoded_options
[j
].canonical_option_num_elements
4534 &decoded_options
[j
].canonical_option
[1], false, true);
4538 read_cmdline_option (&global_options
, &global_options_set
,
4539 decoded_options
+ j
, UNKNOWN_LOCATION
,
4540 CL_DRIVER
, &handlers
, global_dc
);
4546 switches
[n_switches
].part1
= 0;
4550 /* Callback for processing %D and %I specs. */
4552 struct spec_path_info
{
4557 bool separate_options
;
4561 spec_path (char *path
, void *data
)
4563 struct spec_path_info
*info
= (struct spec_path_info
*) data
;
4567 if (info
->omit_relative
&& !IS_ABSOLUTE_PATH (path
))
4570 if (info
->append_len
!= 0)
4572 len
= strlen (path
);
4573 memcpy (path
+ len
, info
->append
, info
->append_len
+ 1);
4576 if (!is_directory (path
, true))
4579 do_spec_1 (info
->option
, 1, NULL
);
4580 if (info
->separate_options
)
4581 do_spec_1 (" ", 0, NULL
);
4583 if (info
->append_len
== 0)
4585 len
= strlen (path
);
4586 save
= path
[len
- 1];
4587 if (IS_DIR_SEPARATOR (path
[len
- 1]))
4588 path
[len
- 1] = '\0';
4591 do_spec_1 (path
, 1, NULL
);
4592 do_spec_1 (" ", 0, NULL
);
4594 /* Must not damage the original path. */
4595 if (info
->append_len
== 0)
4596 path
[len
- 1] = save
;
4601 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4605 create_at_file (char **argv
)
4607 char *temp_file
= make_temp_file ("");
4608 char *at_argument
= concat ("@", temp_file
, NULL
);
4609 FILE *f
= fopen (temp_file
, "w");
4613 fatal_error ("could not open temporary response file %s",
4616 status
= writeargv (argv
, f
);
4619 fatal_error ("could not write to temporary response file %s",
4622 status
= fclose (f
);
4625 fatal_error ("could not close temporary response file %s",
4628 store_arg (at_argument
, 0, 0);
4630 record_temp_file (temp_file
, !save_temps_flag
, !save_temps_flag
);
4633 /* True if we should compile INFILE. */
4636 compile_input_file_p (struct infile
*infile
)
4638 if ((!infile
->language
) || (infile
->language
[0] != '*'))
4639 if (infile
->incompiler
== input_file_compiler
)
4644 /* Process each member of VEC as a spec. */
4647 do_specs_vec (vec
<char_p
> vec
)
4652 FOR_EACH_VEC_ELT (vec
, ix
, opt
)
4654 do_spec_1 (opt
, 1, NULL
);
4655 /* Make each accumulated option a separate argument. */
4656 do_spec_1 (" ", 0, NULL
);
4660 /* Process the sub-spec SPEC as a portion of a larger spec.
4661 This is like processing a whole spec except that we do
4662 not initialize at the beginning and we do not supply a
4663 newline by default at the end.
4664 INSWITCH nonzero means don't process %-sequences in SPEC;
4665 in this case, % is treated as an ordinary character.
4666 This is used while substituting switches.
4667 INSWITCH nonzero also causes SPC not to terminate an argument.
4669 Value is zero unless a line was finished
4670 and the command on that line reported an error. */
4673 do_spec_1 (const char *spec
, int inswitch
, const char *soft_matched_part
)
4675 const char *p
= spec
;
4680 /* If it's an empty string argument to a switch, keep it as is. */
4681 if (inswitch
&& !*p
)
4685 /* If substituting a switch, treat all chars like letters.
4686 Otherwise, NL, SPC, TAB and % are special. */
4687 switch (inswitch
? 'a' : c
)
4692 if (argbuf
.length () > 0
4693 && !strcmp (argbuf
.last (), "|"))
4695 /* A `|' before the newline means use a pipe here,
4696 but only if -pipe was specified.
4697 Otherwise, execute now and don't pass the `|' as an arg. */
4700 input_from_pipe
= 1;
4707 set_collect_gcc_options ();
4709 if (argbuf
.length () > 0)
4715 /* Reinitialize for a new command, and for a new argument. */
4718 delete_this_arg
= 0;
4719 this_is_output_file
= 0;
4720 this_is_library_file
= 0;
4721 this_is_linker_script
= 0;
4722 input_from_pipe
= 0;
4729 obstack_1grow (&obstack
, c
);
4737 /* Reinitialize for a new argument. */
4738 delete_this_arg
= 0;
4739 this_is_output_file
= 0;
4740 this_is_library_file
= 0;
4741 this_is_linker_script
= 0;
4748 fatal_error ("spec %qs invalid", spec
);
4751 if (save_temps_length
)
4752 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4754 obstack_grow (&obstack
, input_basename
, basename_length
);
4755 if (compare_debug
< 0)
4756 obstack_grow (&obstack
, ".gk", 3);
4761 if (save_temps_length
)
4762 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4764 obstack_grow (&obstack
, input_basename
, suffixed_basename_length
);
4765 if (compare_debug
< 0)
4766 obstack_grow (&obstack
, ".gk", 3);
4771 delete_this_arg
= 2;
4774 /* Dump out the directories specified with LIBRARY_PATH,
4775 followed by the absolute directories
4776 that we search for startfiles. */
4779 struct spec_path_info info
;
4782 info
.append_len
= 0;
4783 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4784 /* Used on systems which record the specified -L dirs
4785 and use them to search for dynamic linking.
4786 Relative directories always come from -B,
4787 and it is better not to use them for searching
4788 at run time. In particular, stage1 loses. */
4789 info
.omit_relative
= true;
4791 info
.omit_relative
= false;
4793 info
.separate_options
= false;
4795 for_each_path (&startfile_prefixes
, true, 0, spec_path
, &info
);
4800 /* %efoo means report an error with `foo' as error message
4801 and don't execute any more commands for this file. */
4805 while (*p
!= 0 && *p
!= '\n')
4807 buf
= (char *) alloca (p
- q
+ 1);
4808 strncpy (buf
, q
, p
- q
);
4810 error ("%s", _(buf
));
4815 /* %nfoo means report a notice with `foo' on stderr. */
4819 while (*p
!= 0 && *p
!= '\n')
4821 buf
= (char *) alloca (p
- q
+ 1);
4822 strncpy (buf
, q
, p
- q
);
4824 inform (0, "%s", _(buf
));
4834 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4835 defined, and it is not a directory, and it is
4836 writable, use it. Otherwise, treat this like any
4837 other temporary file. */
4839 if ((!save_temps_flag
)
4840 && (stat (HOST_BIT_BUCKET
, &st
) == 0) && (!S_ISDIR (st
.st_mode
))
4841 && (access (HOST_BIT_BUCKET
, W_OK
) == 0))
4843 obstack_grow (&obstack
, HOST_BIT_BUCKET
,
4844 strlen (HOST_BIT_BUCKET
));
4845 delete_this_arg
= 0;
4850 goto create_temp_file
;
4854 obstack_1grow (&obstack
, '-');
4855 delete_this_arg
= 0;
4858 /* consume suffix */
4859 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4861 if (p
[0] == '%' && p
[1] == 'O')
4866 goto create_temp_file
;
4870 /* consume suffix */
4871 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4873 if (p
[0] == '%' && p
[1] == 'O')
4878 goto create_temp_file
;
4884 struct temp_name
*t
;
4886 const char *suffix
= p
;
4887 char *saved_suffix
= NULL
;
4889 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4891 suffix_length
= p
- suffix
;
4892 if (p
[0] == '%' && p
[1] == 'O')
4895 /* We don't support extra suffix characters after %O. */
4896 if (*p
== '.' || ISALNUM ((unsigned char) *p
))
4897 fatal_error ("spec %qs has invalid %<%%0%c%>", spec
, *p
);
4898 if (suffix_length
== 0)
4899 suffix
= TARGET_OBJECT_SUFFIX
;
4903 = XNEWVEC (char, suffix_length
4904 + strlen (TARGET_OBJECT_SUFFIX
) + 1);
4905 strncpy (saved_suffix
, suffix
, suffix_length
);
4906 strcpy (saved_suffix
+ suffix_length
,
4907 TARGET_OBJECT_SUFFIX
);
4909 suffix_length
+= strlen (TARGET_OBJECT_SUFFIX
);
4912 if (compare_debug
< 0)
4914 suffix
= concat (".gk", suffix
, NULL
);
4918 /* If -save-temps=obj and -o were specified, use that for the
4920 if (save_temps_length
)
4923 temp_filename_length
4924 = save_temps_length
+ suffix_length
+ 1;
4925 tmp
= (char *) alloca (temp_filename_length
);
4926 memcpy (tmp
, save_temps_prefix
, save_temps_length
);
4927 memcpy (tmp
+ save_temps_length
, suffix
, suffix_length
);
4928 tmp
[save_temps_length
+ suffix_length
] = '\0';
4929 temp_filename
= save_string (tmp
, save_temps_length
4931 obstack_grow (&obstack
, temp_filename
,
4932 temp_filename_length
);
4934 delete_this_arg
= 0;
4938 /* If the gcc_input_filename has the same suffix specified
4939 for the %g, %u, or %U, and -save-temps is specified,
4940 we could end up using that file as an intermediate
4941 thus clobbering the user's source file (.e.g.,
4942 gcc -save-temps foo.s would clobber foo.s with the
4943 output of cpp0). So check for this condition and
4944 generate a temp file as the intermediate. */
4946 if (save_temps_flag
)
4949 temp_filename_length
= basename_length
+ suffix_length
+ 1;
4950 tmp
= (char *) alloca (temp_filename_length
);
4951 memcpy (tmp
, input_basename
, basename_length
);
4952 memcpy (tmp
+ basename_length
, suffix
, suffix_length
);
4953 tmp
[basename_length
+ suffix_length
] = '\0';
4954 temp_filename
= tmp
;
4956 if (filename_cmp (temp_filename
, gcc_input_filename
) != 0)
4958 #ifndef HOST_LACKS_INODE_NUMBERS
4959 struct stat st_temp
;
4961 /* Note, set_input() resets input_stat_set to 0. */
4962 if (input_stat_set
== 0)
4964 input_stat_set
= stat (gcc_input_filename
,
4966 if (input_stat_set
>= 0)
4970 /* If we have the stat for the gcc_input_filename
4971 and we can do the stat for the temp_filename
4972 then the they could still refer to the same
4973 file if st_dev/st_ino's are the same. */
4974 if (input_stat_set
!= 1
4975 || stat (temp_filename
, &st_temp
) < 0
4976 || input_stat
.st_dev
!= st_temp
.st_dev
4977 || input_stat
.st_ino
!= st_temp
.st_ino
)
4979 /* Just compare canonical pathnames. */
4980 char* input_realname
= lrealpath (gcc_input_filename
);
4981 char* temp_realname
= lrealpath (temp_filename
);
4982 bool files_differ
= filename_cmp (input_realname
, temp_realname
);
4983 free (input_realname
);
4984 free (temp_realname
);
4988 temp_filename
= save_string (temp_filename
,
4989 temp_filename_length
+ 1);
4990 obstack_grow (&obstack
, temp_filename
,
4991 temp_filename_length
);
4993 delete_this_arg
= 0;
4999 /* See if we already have an association of %g/%u/%U and
5001 for (t
= temp_names
; t
; t
= t
->next
)
5002 if (t
->length
== suffix_length
5003 && strncmp (t
->suffix
, suffix
, suffix_length
) == 0
5004 && t
->unique
== (c
== 'u' || c
== 'U' || c
== 'j'))
5007 /* Make a new association if needed. %u and %j
5009 if (t
== 0 || c
== 'u' || c
== 'j')
5013 t
= XNEW (struct temp_name
);
5014 t
->next
= temp_names
;
5017 t
->length
= suffix_length
;
5020 t
->suffix
= saved_suffix
;
5021 saved_suffix
= NULL
;
5024 t
->suffix
= save_string (suffix
, suffix_length
);
5025 t
->unique
= (c
== 'u' || c
== 'U' || c
== 'j');
5026 temp_filename
= make_temp_file (t
->suffix
);
5027 temp_filename_length
= strlen (temp_filename
);
5028 t
->filename
= temp_filename
;
5029 t
->filename_length
= temp_filename_length
;
5032 free (saved_suffix
);
5034 obstack_grow (&obstack
, t
->filename
, t
->filename_length
);
5035 delete_this_arg
= 1;
5043 if (at_file_supplied
)
5045 /* We are going to expand `%i' to `@FILE', where FILE
5046 is a newly-created temporary filename. The filenames
5047 that would usually be expanded in place of %o will be
5048 written to the temporary file. */
5053 for (i
= 0; i
< n_infiles
; i
++)
5054 if (compile_input_file_p (&infiles
[i
]))
5057 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
5059 /* Copy the strings over. */
5060 for (i
= 0, j
= 0; i
< n_infiles
; i
++)
5061 if (compile_input_file_p (&infiles
[i
]))
5063 argv
[j
] = CONST_CAST (char *, infiles
[i
].name
);
5064 infiles
[i
].compiled
= true;
5069 create_at_file (argv
);
5072 for (i
= 0; (int) i
< n_infiles
; i
++)
5073 if (compile_input_file_p (&infiles
[i
]))
5075 store_arg (infiles
[i
].name
, 0, 0);
5076 infiles
[i
].compiled
= true;
5081 obstack_grow (&obstack
, gcc_input_filename
,
5082 input_filename_length
);
5089 struct spec_path_info info
;
5093 do_spec_1 ("-imultilib", 1, NULL
);
5094 /* Make this a separate argument. */
5095 do_spec_1 (" ", 0, NULL
);
5096 do_spec_1 (multilib_dir
, 1, NULL
);
5097 do_spec_1 (" ", 0, NULL
);
5102 do_spec_1 ("-imultiarch", 1, NULL
);
5103 /* Make this a separate argument. */
5104 do_spec_1 (" ", 0, NULL
);
5105 do_spec_1 (multiarch_dir
, 1, NULL
);
5106 do_spec_1 (" ", 0, NULL
);
5109 if (gcc_exec_prefix
)
5111 do_spec_1 ("-iprefix", 1, NULL
);
5112 /* Make this a separate argument. */
5113 do_spec_1 (" ", 0, NULL
);
5114 do_spec_1 (gcc_exec_prefix
, 1, NULL
);
5115 do_spec_1 (" ", 0, NULL
);
5118 if (target_system_root_changed
||
5119 (target_system_root
&& target_sysroot_hdrs_suffix
))
5121 do_spec_1 ("-isysroot", 1, NULL
);
5122 /* Make this a separate argument. */
5123 do_spec_1 (" ", 0, NULL
);
5124 do_spec_1 (target_system_root
, 1, NULL
);
5125 if (target_sysroot_hdrs_suffix
)
5126 do_spec_1 (target_sysroot_hdrs_suffix
, 1, NULL
);
5127 do_spec_1 (" ", 0, NULL
);
5130 info
.option
= "-isystem";
5131 info
.append
= "include";
5132 info
.append_len
= strlen (info
.append
);
5133 info
.omit_relative
= false;
5134 info
.separate_options
= true;
5136 for_each_path (&include_prefixes
, false, info
.append_len
,
5139 info
.append
= "include-fixed";
5140 if (*sysroot_hdrs_suffix_spec
)
5141 info
.append
= concat (info
.append
, dir_separator_str
,
5142 multilib_dir
, NULL
);
5143 info
.append_len
= strlen (info
.append
);
5144 for_each_path (&include_prefixes
, false, info
.append_len
,
5151 int max
= n_infiles
;
5152 max
+= lang_specific_extra_outfiles
;
5154 if (HAVE_GNU_LD
&& at_file_supplied
)
5156 /* We are going to expand `%o' to `@FILE', where FILE
5157 is a newly-created temporary filename. The filenames
5158 that would usually be expanded in place of %o will be
5159 written to the temporary file. */
5164 /* Convert OUTFILES into a form suitable for writeargv. */
5166 /* Determine how many are non-NULL. */
5167 for (n_files
= 0, i
= 0; i
< max
; i
++)
5168 n_files
+= outfiles
[i
] != NULL
;
5170 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
5172 /* Copy the strings over. */
5173 for (i
= 0, j
= 0; i
< max
; i
++)
5176 argv
[j
] = CONST_CAST (char *, outfiles
[i
]);
5181 create_at_file (argv
);
5184 for (i
= 0; i
< max
; i
++)
5186 store_arg (outfiles
[i
], 0, 0);
5191 obstack_grow (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
5196 this_is_library_file
= 1;
5200 this_is_linker_script
= 1;
5204 outfiles
[input_file_number
] = NULL
;
5208 this_is_output_file
= 1;
5213 unsigned int cur_index
= argbuf
.length ();
5214 /* Handle the {...} following the %W. */
5216 fatal_error ("spec %qs has invalid %<%%W%c%>", spec
, *p
);
5217 p
= handle_braces (p
+ 1);
5221 /* If any args were output, mark the last one for deletion
5223 if (argbuf
.length () != cur_index
)
5224 record_temp_file (argbuf
.last (), 0, 1);
5228 /* %x{OPTION} records OPTION for %X to output. */
5236 /* Skip past the option value and make a copy. */
5238 fatal_error ("spec %qs has invalid %<%%x%c%>", spec
, *p
);
5241 string
= save_string (p1
+ 1, p
- p1
- 2);
5243 /* See if we already recorded this option. */
5244 FOR_EACH_VEC_ELT (linker_options
, ix
, opt
)
5245 if (! strcmp (string
, opt
))
5251 /* This option is new; add it. */
5252 add_linker_option (string
, strlen (string
));
5257 /* Dump out the options accumulated previously using %x. */
5259 do_specs_vec (linker_options
);
5262 /* Dump out the options accumulated previously using -Wa,. */
5264 do_specs_vec (assembler_options
);
5267 /* Dump out the options accumulated previously using -Wp,. */
5269 do_specs_vec (preprocessor_options
);
5272 /* Here are digits and numbers that just process
5273 a certain constant string as a spec. */
5276 value
= do_spec_1 (cc1_spec
, 0, NULL
);
5282 value
= do_spec_1 (cc1plus_spec
, 0, NULL
);
5288 value
= do_spec_1 (asm_spec
, 0, NULL
);
5294 value
= do_spec_1 (asm_final_spec
, 0, NULL
);
5301 const char *const spec
5302 = (input_file_compiler
->cpp_spec
5303 ? input_file_compiler
->cpp_spec
5305 value
= do_spec_1 (spec
, 0, NULL
);
5312 value
= do_spec_1 (endfile_spec
, 0, NULL
);
5318 value
= do_spec_1 (link_spec
, 0, NULL
);
5324 value
= do_spec_1 (lib_spec
, 0, NULL
);
5330 if (multilib_os_dir
== NULL
)
5331 obstack_1grow (&obstack
, '.');
5333 obstack_grow (&obstack
, multilib_os_dir
,
5334 strlen (multilib_os_dir
));
5338 value
= do_spec_1 (libgcc_spec
, 0, NULL
);
5344 /* We assume there is a directory
5345 separator at the end of this string. */
5346 if (target_system_root
)
5348 obstack_grow (&obstack
, target_system_root
,
5349 strlen (target_system_root
));
5350 if (target_sysroot_suffix
)
5351 obstack_grow (&obstack
, target_sysroot_suffix
,
5352 strlen (target_sysroot_suffix
));
5357 value
= do_spec_1 (startfile_spec
, 0, NULL
);
5362 /* Here we define characters other than letters and digits. */
5365 p
= handle_braces (p
);
5371 p
= handle_spec_function (p
, NULL
);
5377 obstack_1grow (&obstack
, '%');
5384 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '%')
5386 suffix_subst
= save_string (p
- 1, len
+ 1);
5391 /* Henceforth ignore the option(s) matching the pattern
5397 int have_wildcard
= 0;
5402 switch_option
= SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
;
5404 switch_option
= SWITCH_IGNORE
;
5406 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '\t')
5409 if (p
[len
-1] == '*')
5412 for (i
= 0; i
< n_switches
; i
++)
5413 if (!strncmp (switches
[i
].part1
, p
, len
- have_wildcard
)
5414 && (have_wildcard
|| switches
[i
].part1
[len
] == '\0'))
5416 switches
[i
].live_cond
|= switch_option
;
5417 /* User switch be validated from validate_all_switches.
5418 when the definition is seen from the spec file.
5419 If not defined anywhere, will be rejected. */
5420 if (switches
[i
].known
)
5421 switches
[i
].validated
= true;
5429 if (soft_matched_part
)
5431 if (soft_matched_part
[0])
5432 do_spec_1 (soft_matched_part
, 1, NULL
);
5433 /* Only insert a space after the substitution if it is at the
5434 end of the current sequence. So if:
5436 "%{foo=*:bar%*}%{foo=*:one%*two}"
5438 matches -foo=hello then it will produce:
5440 barhello onehellotwo
5442 if (*p
== 0 || *p
== '}')
5443 do_spec_1 (" ", 0, NULL
);
5446 /* Catch the case where a spec string contains something like
5447 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5448 hand side of the :. */
5449 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5452 /* Process a string found as the value of a spec given by name.
5453 This feature allows individual machine descriptions
5454 to add and use their own specs. */
5457 const char *name
= p
;
5458 struct spec_list
*sl
;
5461 /* The string after the S/P is the name of a spec that is to be
5463 while (*p
&& *p
!= ')')
5466 /* See if it's in the list. */
5467 for (len
= p
- name
, sl
= specs
; sl
; sl
= sl
->next
)
5468 if (sl
->name_len
== len
&& !strncmp (sl
->name
, name
, len
))
5470 name
= *(sl
->ptr_spec
);
5472 fnotice (stderr
, "Processing spec (%s), which is '%s'\n",
5480 value
= do_spec_1 (name
, 0, NULL
);
5485 /* Discard the closing paren. */
5492 error ("spec failure: unrecognized spec option %qc", c
);
5498 /* Backslash: treat next character as ordinary. */
5503 /* Ordinary character: put it into the current argument. */
5504 obstack_1grow (&obstack
, c
);
5508 /* End of string. If we are processing a spec function, we need to
5509 end any pending argument. */
5510 if (processing_spec_function
)
5516 /* Look up a spec function. */
5518 static const struct spec_function
*
5519 lookup_spec_function (const char *name
)
5521 const struct spec_function
*sf
;
5523 for (sf
= static_spec_functions
; sf
->name
!= NULL
; sf
++)
5524 if (strcmp (sf
->name
, name
) == 0)
5530 /* Evaluate a spec function. */
5533 eval_spec_function (const char *func
, const char *args
)
5535 const struct spec_function
*sf
;
5536 const char *funcval
;
5538 /* Saved spec processing context. */
5539 vec
<const_char_p
> save_argbuf
;
5542 int save_delete_this_arg
;
5543 int save_this_is_output_file
;
5544 int save_this_is_library_file
;
5545 int save_input_from_pipe
;
5546 int save_this_is_linker_script
;
5547 const char *save_suffix_subst
;
5549 int save_growing_size
;
5550 void *save_growing_value
= NULL
;
5552 sf
= lookup_spec_function (func
);
5554 fatal_error ("unknown spec function %qs", func
);
5556 /* Push the spec processing context. */
5557 save_argbuf
= argbuf
;
5559 save_arg_going
= arg_going
;
5560 save_delete_this_arg
= delete_this_arg
;
5561 save_this_is_output_file
= this_is_output_file
;
5562 save_this_is_library_file
= this_is_library_file
;
5563 save_this_is_linker_script
= this_is_linker_script
;
5564 save_input_from_pipe
= input_from_pipe
;
5565 save_suffix_subst
= suffix_subst
;
5567 /* If we have some object growing now, finalize it so the args and function
5568 eval proceed from a cleared context. This is needed to prevent the first
5569 constructed arg from mistakenly including the growing value. We'll push
5570 this value back on the obstack once the function evaluation is done, to
5571 restore a consistent processing context for our caller. This is fine as
5572 the address of growing objects isn't guaranteed to remain stable until
5573 they are finalized, and we expect this situation to be rare enough for
5574 the extra copy not to be an issue. */
5575 save_growing_size
= obstack_object_size (&obstack
);
5576 if (save_growing_size
> 0)
5577 save_growing_value
= obstack_finish (&obstack
);
5579 /* Create a new spec processing context, and build the function
5583 if (do_spec_2 (args
) < 0)
5584 fatal_error ("error in args to spec function %qs", func
);
5586 /* argbuf_index is an index for the next argument to be inserted, and
5587 so contains the count of the args already inserted. */
5589 funcval
= (*sf
->func
) (argbuf
.length (),
5592 /* Pop the spec processing context. */
5594 argbuf
= save_argbuf
;
5596 arg_going
= save_arg_going
;
5597 delete_this_arg
= save_delete_this_arg
;
5598 this_is_output_file
= save_this_is_output_file
;
5599 this_is_library_file
= save_this_is_library_file
;
5600 this_is_linker_script
= save_this_is_linker_script
;
5601 input_from_pipe
= save_input_from_pipe
;
5602 suffix_subst
= save_suffix_subst
;
5604 if (save_growing_size
> 0)
5605 obstack_grow (&obstack
, save_growing_value
, save_growing_size
);
5610 /* Handle a spec function call of the form:
5614 ARGS is processed as a spec in a separate context and split into an
5615 argument vector in the normal fashion. The function returns a string
5616 containing a spec which we then process in the caller's context, or
5617 NULL if no processing is required.
5619 If RETVAL_NONNULL is not NULL, then store a bool whether function
5620 returned non-NULL. */
5623 handle_spec_function (const char *p
, bool *retval_nonnull
)
5626 const char *endp
, *funcval
;
5629 processing_spec_function
++;
5631 /* Get the function name. */
5632 for (endp
= p
; *endp
!= '\0'; endp
++)
5634 if (*endp
== '(') /* ) */
5636 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5637 if (!ISALNUM (*endp
) && !(*endp
== '-' || *endp
== '_'))
5638 fatal_error ("malformed spec function name");
5640 if (*endp
!= '(') /* ) */
5641 fatal_error ("no arguments for spec function");
5642 func
= save_string (p
, endp
- p
);
5645 /* Get the arguments. */
5646 for (count
= 0; *endp
!= '\0'; endp
++)
5655 else if (*endp
== '(') /* ) */
5660 fatal_error ("malformed spec function arguments");
5661 args
= save_string (p
, endp
- p
);
5664 /* p now points to just past the end of the spec function expression. */
5666 funcval
= eval_spec_function (func
, args
);
5667 if (funcval
!= NULL
&& do_spec_1 (funcval
, 0, NULL
) < 0)
5670 *retval_nonnull
= funcval
!= NULL
;
5675 processing_spec_function
--;
5680 /* Inline subroutine of handle_braces. Returns true if the current
5681 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5683 input_suffix_matches (const char *atom
, const char *end_atom
)
5685 return (input_suffix
5686 && !strncmp (input_suffix
, atom
, end_atom
- atom
)
5687 && input_suffix
[end_atom
- atom
] == '\0');
5690 /* Subroutine of handle_braces. Returns true if the current
5691 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5693 input_spec_matches (const char *atom
, const char *end_atom
)
5695 return (input_file_compiler
5696 && input_file_compiler
->suffix
5697 && input_file_compiler
->suffix
[0] != '\0'
5698 && !strncmp (input_file_compiler
->suffix
+ 1, atom
,
5700 && input_file_compiler
->suffix
[end_atom
- atom
+ 1] == '\0');
5703 /* Subroutine of handle_braces. Returns true if a switch
5704 matching the atom bracketed by ATOM and END_ATOM appeared on the
5707 switch_matches (const char *atom
, const char *end_atom
, int starred
)
5710 int len
= end_atom
- atom
;
5711 int plen
= starred
? len
: -1;
5713 for (i
= 0; i
< n_switches
; i
++)
5714 if (!strncmp (switches
[i
].part1
, atom
, len
)
5715 && (starred
|| switches
[i
].part1
[len
] == '\0')
5716 && check_live_switch (i
, plen
))
5719 /* Check if a switch with separated form matching the atom.
5720 We check -D and -U switches. */
5721 else if (switches
[i
].args
!= 0)
5723 if ((*switches
[i
].part1
== 'D' || *switches
[i
].part1
== 'U')
5724 && *switches
[i
].part1
== atom
[0])
5726 if (!strncmp (switches
[i
].args
[0], &atom
[1], len
- 1)
5727 && (starred
|| (switches
[i
].part1
[1] == '\0'
5728 && switches
[i
].args
[0][len
- 1] == '\0'))
5729 && check_live_switch (i
, (starred
? 1 : -1)))
5737 /* Inline subroutine of handle_braces. Mark all of the switches which
5738 match ATOM (extends to END_ATOM; STARRED indicates whether there
5739 was a star after the atom) for later processing. */
5741 mark_matching_switches (const char *atom
, const char *end_atom
, int starred
)
5744 int len
= end_atom
- atom
;
5745 int plen
= starred
? len
: -1;
5747 for (i
= 0; i
< n_switches
; i
++)
5748 if (!strncmp (switches
[i
].part1
, atom
, len
)
5749 && (starred
|| switches
[i
].part1
[len
] == '\0')
5750 && check_live_switch (i
, plen
))
5751 switches
[i
].ordering
= 1;
5754 /* Inline subroutine of handle_braces. Process all the currently
5755 marked switches through give_switch, and clear the marks. */
5757 process_marked_switches (void)
5761 for (i
= 0; i
< n_switches
; i
++)
5762 if (switches
[i
].ordering
== 1)
5764 switches
[i
].ordering
= 0;
5769 /* Handle a %{ ... } construct. P points just inside the leading {.
5770 Returns a pointer one past the end of the brace block, or 0
5771 if we call do_spec_1 and that returns -1. */
5774 handle_braces (const char *p
)
5776 const char *atom
, *end_atom
;
5777 const char *d_atom
= NULL
, *d_end_atom
= NULL
;
5778 const char *orig
= p
;
5786 bool a_must_be_last
= false;
5787 bool ordered_set
= false;
5788 bool disjunct_set
= false;
5789 bool disj_matched
= false;
5790 bool disj_starred
= true;
5791 bool n_way_choice
= false;
5792 bool n_way_matched
= false;
5794 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5801 /* Scan one "atom" (S in the description above of %{}, possibly
5802 with '!', '.', '@', ',', or '*' modifiers). */
5804 a_is_suffix
= false;
5805 a_is_starred
= false;
5806 a_is_negated
= false;
5807 a_is_spectype
= false;
5811 p
++, a_is_negated
= true;
5814 if (*p
== '%' && p
[1] == ':')
5818 p
= handle_spec_function (p
+ 2, &a_matched
);
5823 p
++, a_is_suffix
= true;
5825 p
++, a_is_spectype
= true;
5828 while (ISIDNUM (*p
) || *p
== '-' || *p
== '+' || *p
== '='
5829 || *p
== ',' || *p
== '.' || *p
== '@')
5834 p
++, a_is_starred
= 1;
5841 /* Substitute the switch(es) indicated by the current atom. */
5843 if (disjunct_set
|| n_way_choice
|| a_is_negated
|| a_is_suffix
5844 || a_is_spectype
|| atom
== end_atom
)
5847 mark_matching_switches (atom
, end_atom
, a_is_starred
);
5850 process_marked_switches ();
5854 /* Substitute some text if the current atom appears as a switch
5856 disjunct_set
= true;
5860 if (atom
&& atom
== end_atom
)
5862 if (!n_way_choice
|| disj_matched
|| *p
== '|'
5863 || a_is_negated
|| a_is_suffix
|| a_is_spectype
5867 /* An empty term may appear as the last choice of an
5868 N-way choice set; it means "otherwise". */
5869 a_must_be_last
= true;
5870 disj_matched
= !n_way_matched
;
5871 disj_starred
= false;
5875 if ((a_is_suffix
|| a_is_spectype
) && a_is_starred
)
5879 disj_starred
= false;
5881 /* Don't bother testing this atom if we already have a
5883 if (!disj_matched
&& !n_way_matched
)
5886 /* a_matched is already set by handle_spec_function. */;
5887 else if (a_is_suffix
)
5888 a_matched
= input_suffix_matches (atom
, end_atom
);
5889 else if (a_is_spectype
)
5890 a_matched
= input_spec_matches (atom
, end_atom
);
5892 a_matched
= switch_matches (atom
, end_atom
, a_is_starred
);
5894 if (a_matched
!= a_is_negated
)
5896 disj_matched
= true;
5898 d_end_atom
= end_atom
;
5905 /* Found the body, that is, the text to substitute if the
5906 current disjunction matches. */
5907 p
= process_brace_body (p
+ 1, d_atom
, d_end_atom
, disj_starred
,
5908 disj_matched
&& !n_way_matched
);
5912 /* If we have an N-way choice, reset state for the next
5916 n_way_choice
= true;
5917 n_way_matched
|= disj_matched
;
5918 disj_matched
= false;
5919 disj_starred
= true;
5920 d_atom
= d_end_atom
= NULL
;
5929 while (*p
++ != '}');
5934 fatal_error ("braced spec %qs is invalid at %qc", orig
, *p
);
5939 /* Subroutine of handle_braces. Scan and process a brace substitution body
5940 (X in the description of %{} syntax). P points one past the colon;
5941 ATOM and END_ATOM bracket the first atom which was found to be true
5942 (present) in the current disjunction; STARRED indicates whether all
5943 the atoms in the current disjunction were starred (for syntax validation);
5944 MATCHED indicates whether the disjunction matched or not, and therefore
5945 whether or not the body is to be processed through do_spec_1 or just
5946 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5950 process_brace_body (const char *p
, const char *atom
, const char *end_atom
,
5951 int starred
, int matched
)
5953 const char *body
, *end_body
;
5954 unsigned int nesting_level
;
5955 bool have_subst
= false;
5957 /* Locate the closing } or ;, honoring nested braces.
5958 Trim trailing whitespace. */
5967 if (!--nesting_level
)
5970 else if (*p
== ';' && nesting_level
== 1)
5972 else if (*p
== '%' && p
[1] == '*' && nesting_level
== 1)
5974 else if (*p
== '\0')
5980 while (end_body
[-1] == ' ' || end_body
[-1] == '\t')
5983 if (have_subst
&& !starred
)
5988 /* Copy the substitution body to permanent storage and execute it.
5989 If have_subst is false, this is a simple matter of running the
5990 body through do_spec_1... */
5991 char *string
= save_string (body
, end_body
- body
);
5994 if (do_spec_1 (string
, 0, NULL
) < 0)
5999 /* ... but if have_subst is true, we have to process the
6000 body once for each matching switch, with %* set to the
6001 variant part of the switch. */
6002 unsigned int hard_match_len
= end_atom
- atom
;
6005 for (i
= 0; i
< n_switches
; i
++)
6006 if (!strncmp (switches
[i
].part1
, atom
, hard_match_len
)
6007 && check_live_switch (i
, hard_match_len
))
6009 if (do_spec_1 (string
, 0,
6010 &switches
[i
].part1
[hard_match_len
]) < 0)
6012 /* Pass any arguments this switch has. */
6014 suffix_subst
= NULL
;
6022 fatal_error ("braced spec body %qs is invalid", body
);
6025 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
6026 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
6027 spec, or -1 if either exact match or %* is used.
6029 A -O switch is obsoleted by a later -O switch. A -f, -g, -m, or -W switch
6030 whose value does not begin with "no-" is obsoleted by the same value
6031 with the "no-", similarly for a switch with the "no-" prefix. */
6034 check_live_switch (int switchnum
, int prefix_length
)
6036 const char *name
= switches
[switchnum
].part1
;
6039 /* If we already processed this switch and determined if it was
6040 live or not, return our past determination. */
6041 if (switches
[switchnum
].live_cond
!= 0)
6042 return ((switches
[switchnum
].live_cond
& SWITCH_LIVE
) != 0
6043 && (switches
[switchnum
].live_cond
& SWITCH_FALSE
) == 0
6044 && (switches
[switchnum
].live_cond
& SWITCH_IGNORE_PERMANENTLY
)
6047 /* In the common case of {<at-most-one-letter>*}, a negating
6048 switch would always match, so ignore that case. We will just
6049 send the conflicting switches to the compiler phase. */
6050 if (prefix_length
>= 0 && prefix_length
<= 1)
6053 /* Now search for duplicate in a manner that depends on the name. */
6057 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
6058 if (switches
[i
].part1
[0] == 'O')
6060 switches
[switchnum
].validated
= true;
6061 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
6066 case 'W': case 'f': case 'm': case 'g':
6067 if (! strncmp (name
+ 1, "no-", 3))
6069 /* We have Xno-YYY, search for XYYY. */
6070 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
6071 if (switches
[i
].part1
[0] == name
[0]
6072 && ! strcmp (&switches
[i
].part1
[1], &name
[4]))
6074 /* --specs are validated with the validate_switches mechanism. */
6075 if (switches
[switchnum
].known
)
6076 switches
[switchnum
].validated
= true;
6077 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
6083 /* We have XYYY, search for Xno-YYY. */
6084 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
6085 if (switches
[i
].part1
[0] == name
[0]
6086 && switches
[i
].part1
[1] == 'n'
6087 && switches
[i
].part1
[2] == 'o'
6088 && switches
[i
].part1
[3] == '-'
6089 && !strcmp (&switches
[i
].part1
[4], &name
[1]))
6091 /* --specs are validated with the validate_switches mechanism. */
6092 if (switches
[switchnum
].known
)
6093 switches
[switchnum
].validated
= true;
6094 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
6101 /* Otherwise the switch is live. */
6102 switches
[switchnum
].live_cond
|= SWITCH_LIVE
;
6106 /* Pass a switch to the current accumulating command
6107 in the same form that we received it.
6108 SWITCHNUM identifies the switch; it is an index into
6109 the vector of switches gcc received, which is `switches'.
6110 This cannot fail since it never finishes a command line.
6112 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
6115 give_switch (int switchnum
, int omit_first_word
)
6117 if ((switches
[switchnum
].live_cond
& SWITCH_IGNORE
) != 0)
6120 if (!omit_first_word
)
6122 do_spec_1 ("-", 0, NULL
);
6123 do_spec_1 (switches
[switchnum
].part1
, 1, NULL
);
6126 if (switches
[switchnum
].args
!= 0)
6129 for (p
= switches
[switchnum
].args
; *p
; p
++)
6131 const char *arg
= *p
;
6133 do_spec_1 (" ", 0, NULL
);
6136 unsigned length
= strlen (arg
);
6139 while (length
-- && !IS_DIR_SEPARATOR (arg
[length
]))
6140 if (arg
[length
] == '.')
6142 (CONST_CAST (char *, arg
))[length
] = 0;
6146 do_spec_1 (arg
, 1, NULL
);
6148 (CONST_CAST (char *, arg
))[length
] = '.';
6149 do_spec_1 (suffix_subst
, 1, NULL
);
6152 do_spec_1 (arg
, 1, NULL
);
6156 do_spec_1 (" ", 0, NULL
);
6157 switches
[switchnum
].validated
= true;
6160 /* Search for a file named NAME trying various prefixes including the
6161 user's -B prefix and some standard ones.
6162 Return the absolute file name found. If nothing is found, return NAME. */
6165 find_file (const char *name
)
6167 char *newname
= find_a_file (&startfile_prefixes
, name
, R_OK
, true);
6168 return newname
? newname
: name
;
6171 /* Determine whether a directory exists. If LINKER, return 0 for
6172 certain fixed names not needed by the linker. */
6175 is_directory (const char *path1
, bool linker
)
6182 /* Ensure the string ends with "/.". The resulting path will be a
6183 directory even if the given path is a symbolic link. */
6184 len1
= strlen (path1
);
6185 path
= (char *) alloca (3 + len1
);
6186 memcpy (path
, path1
, len1
);
6188 if (!IS_DIR_SEPARATOR (cp
[-1]))
6189 *cp
++ = DIR_SEPARATOR
;
6193 /* Exclude directories that the linker is known to search. */
6195 && IS_DIR_SEPARATOR (path
[0])
6197 && filename_ncmp (path
+ 1, "lib", 3) == 0)
6199 && filename_ncmp (path
+ 1, "usr", 3) == 0
6200 && IS_DIR_SEPARATOR (path
[4])
6201 && filename_ncmp (path
+ 5, "lib", 3) == 0)))
6204 return (stat (path
, &st
) >= 0 && S_ISDIR (st
.st_mode
));
6207 /* Set up the various global variables to indicate that we're processing
6208 the input file named FILENAME. */
6211 set_input (const char *filename
)
6215 gcc_input_filename
= filename
;
6216 input_filename_length
= strlen (gcc_input_filename
);
6217 input_basename
= lbasename (gcc_input_filename
);
6219 /* Find a suffix starting with the last period,
6220 and set basename_length to exclude that suffix. */
6221 basename_length
= strlen (input_basename
);
6222 suffixed_basename_length
= basename_length
;
6223 p
= input_basename
+ basename_length
;
6224 while (p
!= input_basename
&& *p
!= '.')
6226 if (*p
== '.' && p
!= input_basename
)
6228 basename_length
= p
- input_basename
;
6229 input_suffix
= p
+ 1;
6234 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
6235 we will need to do a stat on the gcc_input_filename. The
6236 INPUT_STAT_SET signals that the stat is needed. */
6240 /* On fatal signals, delete all the temporary files. */
6243 fatal_signal (int signum
)
6245 signal (signum
, SIG_DFL
);
6246 delete_failure_queue ();
6247 delete_temp_files ();
6248 /* Get the same signal again, this time not handled,
6249 so its normal effect occurs. */
6250 kill (getpid (), signum
);
6253 /* Compare the contents of the two files named CMPFILE[0] and
6254 CMPFILE[1]. Return zero if they're identical, nonzero
6258 compare_files (char *cmpfile
[])
6261 FILE *temp
[2] = { NULL
, NULL
};
6267 void *map
[2] = { NULL
, NULL
};
6269 for (i
= 0; i
< 2; i
++)
6273 if (stat (cmpfile
[i
], &st
) < 0 || !S_ISREG (st
.st_mode
))
6275 error ("%s: could not determine length of compare-debug file %s",
6276 gcc_input_filename
, cmpfile
[i
]);
6281 length
[i
] = st
.st_size
;
6284 if (!ret
&& length
[0] != length
[1])
6286 error ("%s: -fcompare-debug failure (length)", gcc_input_filename
);
6291 for (i
= 0; i
< 2; i
++)
6293 int fd
= open (cmpfile
[i
], O_RDONLY
);
6296 error ("%s: could not open compare-debug file %s",
6297 gcc_input_filename
, cmpfile
[i
]);
6302 map
[i
] = mmap (NULL
, length
[i
], PROT_READ
, MAP_PRIVATE
, fd
, 0);
6305 if (map
[i
] == (void *) MAP_FAILED
)
6314 if (memcmp (map
[0], map
[1], length
[0]) != 0)
6316 error ("%s: -fcompare-debug failure", gcc_input_filename
);
6321 for (i
= 0; i
< 2; i
++)
6323 munmap ((caddr_t
) map
[i
], length
[i
]);
6332 for (i
= 0; i
< 2; i
++)
6334 temp
[i
] = fopen (cmpfile
[i
], "r");
6337 error ("%s: could not open compare-debug file %s",
6338 gcc_input_filename
, cmpfile
[i
]);
6344 if (!ret
&& temp
[0] && temp
[1])
6348 c0
= fgetc (temp
[0]);
6349 c1
= fgetc (temp
[1]);
6353 error ("%s: -fcompare-debug failure",
6354 gcc_input_filename
);
6363 for (i
= 1; i
>= 0; i
--)
6372 extern int main (int, char **);
6375 main (int argc
, char **argv
)
6379 int linker_was_run
= 0;
6380 int lang_n_infiles
= 0;
6381 int num_linker_inputs
= 0;
6382 char *explicit_link_files
;
6384 char *lto_wrapper_file
;
6386 struct user_specs
*uptr
;
6387 char **old_argv
= argv
;
6388 struct cl_decoded_option
*decoded_options
;
6389 unsigned int decoded_options_count
;
6391 p
= argv
[0] + strlen (argv
[0]);
6392 while (p
!= argv
[0] && !IS_DIR_SEPARATOR (p
[-1]))
6396 xmalloc_set_program_name (progname
);
6398 expandargv (&argc
, &argv
);
6400 /* Determine if any expansions were made. */
6401 if (argv
!= old_argv
)
6402 at_file_supplied
= true;
6404 /* Register the language-independent parameters. */
6405 global_init_params ();
6408 init_options_struct (&global_options
, &global_options_set
);
6410 decode_cmdline_options_to_array (argc
, CONST_CAST2 (const char **, char **,
6413 &decoded_options
, &decoded_options_count
);
6415 /* Unlock the stdio streams. */
6416 unlock_std_streams ();
6418 gcc_init_libintl ();
6420 diagnostic_initialize (global_dc
, 0);
6422 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6423 /* Perform host dependent initialization when needed. */
6424 GCC_DRIVER_HOST_INITIALIZATION
;
6427 if (atexit (delete_temp_files
) != 0)
6428 fatal_error ("atexit failed");
6430 if (signal (SIGINT
, SIG_IGN
) != SIG_IGN
)
6431 signal (SIGINT
, fatal_signal
);
6433 if (signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
6434 signal (SIGHUP
, fatal_signal
);
6436 if (signal (SIGTERM
, SIG_IGN
) != SIG_IGN
)
6437 signal (SIGTERM
, fatal_signal
);
6439 if (signal (SIGPIPE
, SIG_IGN
) != SIG_IGN
)
6440 signal (SIGPIPE
, fatal_signal
);
6443 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6444 receive the signal. A different setting is inheritable */
6445 signal (SIGCHLD
, SIG_DFL
);
6448 /* Parsing and gimplification sometimes need quite large stack.
6449 Increase stack size limits if possible. */
6450 stack_limit_increase (64 * 1024 * 1024);
6452 /* Allocate the argument vector. */
6455 obstack_init (&obstack
);
6457 /* Build multilib_select, et. al from the separate lines that make up each
6458 multilib selection. */
6460 const char *const *q
= multilib_raw
;
6463 obstack_init (&multilib_obstack
);
6464 while ((p
= *q
++) != (char *) 0)
6465 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6467 obstack_1grow (&multilib_obstack
, 0);
6468 multilib_select
= XOBFINISH (&multilib_obstack
, const char *);
6470 q
= multilib_matches_raw
;
6471 while ((p
= *q
++) != (char *) 0)
6472 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6474 obstack_1grow (&multilib_obstack
, 0);
6475 multilib_matches
= XOBFINISH (&multilib_obstack
, const char *);
6477 q
= multilib_exclusions_raw
;
6478 while ((p
= *q
++) != (char *) 0)
6479 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6481 obstack_1grow (&multilib_obstack
, 0);
6482 multilib_exclusions
= XOBFINISH (&multilib_obstack
, const char *);
6484 q
= multilib_reuse_raw
;
6485 while ((p
= *q
++) != (char *) 0)
6486 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6488 obstack_1grow (&multilib_obstack
, 0);
6489 multilib_reuse
= XOBFINISH (&multilib_obstack
, const char *);
6492 for (i
= 0; i
< ARRAY_SIZE (multilib_defaults_raw
); i
++)
6495 obstack_1grow (&multilib_obstack
, ' ');
6496 obstack_grow (&multilib_obstack
,
6497 multilib_defaults_raw
[i
],
6498 strlen (multilib_defaults_raw
[i
]));
6502 obstack_1grow (&multilib_obstack
, 0);
6503 multilib_defaults
= XOBFINISH (&multilib_obstack
, const char *);
6506 #ifdef INIT_ENVIRONMENT
6507 /* Set up any other necessary machine specific environment variables. */
6508 xputenv (INIT_ENVIRONMENT
);
6511 /* Make a table of what switches there are (switches, n_switches).
6512 Make a table of specified input files (infiles, n_infiles).
6513 Decode switches that are handled locally. */
6515 process_command (decoded_options_count
, decoded_options
);
6517 /* Initialize the vector of specs to just the default.
6518 This means one element containing 0s, as a terminator. */
6520 compilers
= XNEWVAR (struct compiler
, sizeof default_compilers
);
6521 memcpy (compilers
, default_compilers
, sizeof default_compilers
);
6522 n_compilers
= n_default_compilers
;
6524 /* Read specs from a file if there is one. */
6526 machine_suffix
= concat (spec_machine
, dir_separator_str
,
6527 spec_version
, dir_separator_str
, NULL
);
6528 just_machine_suffix
= concat (spec_machine
, dir_separator_str
, NULL
);
6530 specs_file
= find_a_file (&startfile_prefixes
, "specs", R_OK
, true);
6531 /* Read the specs file unless it is a default one. */
6532 if (specs_file
!= 0 && strcmp (specs_file
, "specs"))
6533 read_specs (specs_file
, true, false);
6537 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6538 for any override of as, ld and libraries. */
6539 specs_file
= (char *) alloca (strlen (standard_exec_prefix
)
6540 + strlen (just_machine_suffix
) + sizeof ("specs"));
6542 strcpy (specs_file
, standard_exec_prefix
);
6543 strcat (specs_file
, just_machine_suffix
);
6544 strcat (specs_file
, "specs");
6545 if (access (specs_file
, R_OK
) == 0)
6546 read_specs (specs_file
, true, false);
6548 /* Process any configure-time defaults specified for the command line
6549 options, via OPTION_DEFAULT_SPECS. */
6550 for (i
= 0; i
< ARRAY_SIZE (option_default_specs
); i
++)
6551 do_option_spec (option_default_specs
[i
].name
,
6552 option_default_specs
[i
].spec
);
6554 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6555 of the command line. */
6557 for (i
= 0; i
< ARRAY_SIZE (driver_self_specs
); i
++)
6558 do_self_spec (driver_self_specs
[i
]);
6560 /* If not cross-compiling, look for executables in the standard
6562 if (*cross_compile
== '0')
6564 if (*md_exec_prefix
)
6566 add_prefix (&exec_prefixes
, md_exec_prefix
, "GCC",
6567 PREFIX_PRIORITY_LAST
, 0, 0);
6571 /* Process sysroot_suffix_spec. */
6572 if (*sysroot_suffix_spec
!= 0
6573 && !no_sysroot_suffix
6574 && do_spec_2 (sysroot_suffix_spec
) == 0)
6576 if (argbuf
.length () > 1)
6577 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6578 else if (argbuf
.length () == 1)
6579 target_sysroot_suffix
= xstrdup (argbuf
.last ());
6582 #ifdef HAVE_LD_SYSROOT
6583 /* Pass the --sysroot option to the linker, if it supports that. If
6584 there is a sysroot_suffix_spec, it has already been processed by
6585 this point, so target_system_root really is the system root we
6587 if (target_system_root
)
6589 obstack_grow (&obstack
, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6590 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
6591 set_spec ("link", XOBFINISH (&obstack
, const char *), false);
6595 /* Process sysroot_hdrs_suffix_spec. */
6596 if (*sysroot_hdrs_suffix_spec
!= 0
6597 && !no_sysroot_suffix
6598 && do_spec_2 (sysroot_hdrs_suffix_spec
) == 0)
6600 if (argbuf
.length () > 1)
6601 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6602 else if (argbuf
.length () == 1)
6603 target_sysroot_hdrs_suffix
= xstrdup (argbuf
.last ());
6606 /* Look for startfiles in the standard places. */
6607 if (*startfile_prefix_spec
!= 0
6608 && do_spec_2 (startfile_prefix_spec
) == 0
6609 && do_spec_1 (" ", 0, NULL
) == 0)
6613 FOR_EACH_VEC_ELT (argbuf
, ndx
, arg
)
6614 add_sysrooted_prefix (&startfile_prefixes
, arg
, "BINUTILS",
6615 PREFIX_PRIORITY_LAST
, 0, 1);
6617 /* We should eventually get rid of all these and stick to
6618 startfile_prefix_spec exclusively. */
6619 else if (*cross_compile
== '0' || target_system_root
)
6621 if (*md_startfile_prefix
)
6622 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix
,
6623 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
6625 if (*md_startfile_prefix_1
)
6626 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix_1
,
6627 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
6629 /* If standard_startfile_prefix is relative, base it on
6630 standard_exec_prefix. This lets us move the installed tree
6631 as a unit. If GCC_EXEC_PREFIX is defined, base
6632 standard_startfile_prefix on that as well.
6634 If the prefix is relative, only search it for native compilers;
6635 otherwise we will search a directory containing host libraries. */
6636 if (IS_ABSOLUTE_PATH (standard_startfile_prefix
))
6637 add_sysrooted_prefix (&startfile_prefixes
,
6638 standard_startfile_prefix
, "BINUTILS",
6639 PREFIX_PRIORITY_LAST
, 0, 1);
6640 else if (*cross_compile
== '0')
6642 add_prefix (&startfile_prefixes
,
6643 concat (gcc_exec_prefix
6644 ? gcc_exec_prefix
: standard_exec_prefix
,
6646 standard_startfile_prefix
, NULL
),
6647 NULL
, PREFIX_PRIORITY_LAST
, 0, 1);
6650 /* Sysrooted prefixes are relocated because target_system_root is
6651 also relocated by gcc_exec_prefix. */
6652 if (*standard_startfile_prefix_1
)
6653 add_sysrooted_prefix (&startfile_prefixes
,
6654 standard_startfile_prefix_1
, "BINUTILS",
6655 PREFIX_PRIORITY_LAST
, 0, 1);
6656 if (*standard_startfile_prefix_2
)
6657 add_sysrooted_prefix (&startfile_prefixes
,
6658 standard_startfile_prefix_2
, "BINUTILS",
6659 PREFIX_PRIORITY_LAST
, 0, 1);
6662 /* Process any user specified specs in the order given on the command
6664 for (uptr
= user_specs_head
; uptr
; uptr
= uptr
->next
)
6666 char *filename
= find_a_file (&startfile_prefixes
, uptr
->filename
,
6668 read_specs (filename
? filename
: uptr
->filename
, false, true);
6671 /* Process any user self specs. */
6673 struct spec_list
*sl
;
6674 for (sl
= specs
; sl
; sl
= sl
->next
)
6675 if (sl
->name_len
== sizeof "self_spec" - 1
6676 && !strcmp (sl
->name
, "self_spec"))
6677 do_self_spec (*sl
->ptr_spec
);
6682 enum save_temps save
;
6684 if (!compare_debug_second
)
6686 n_switches_debug_check
[1] = n_switches
;
6687 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
6688 switches_debug_check
[1] = XDUPVEC (struct switchstr
, switches
,
6691 do_self_spec ("%:compare-debug-self-opt()");
6692 n_switches_debug_check
[0] = n_switches
;
6693 n_switches_alloc_debug_check
[0] = n_switches_alloc
;
6694 switches_debug_check
[0] = switches
;
6696 n_switches
= n_switches_debug_check
[1];
6697 n_switches_alloc
= n_switches_alloc_debug_check
[1];
6698 switches
= switches_debug_check
[1];
6701 /* Avoid crash when computing %j in this early. */
6702 save
= save_temps_flag
;
6703 save_temps_flag
= SAVE_TEMPS_NONE
;
6705 compare_debug
= -compare_debug
;
6706 do_self_spec ("%:compare-debug-self-opt()");
6708 save_temps_flag
= save
;
6710 if (!compare_debug_second
)
6712 n_switches_debug_check
[1] = n_switches
;
6713 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
6714 switches_debug_check
[1] = switches
;
6715 compare_debug
= -compare_debug
;
6716 n_switches
= n_switches_debug_check
[0];
6717 n_switches_alloc
= n_switches_debug_check
[0];
6718 switches
= switches_debug_check
[0];
6723 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6724 if (gcc_exec_prefix
)
6725 gcc_exec_prefix
= concat (gcc_exec_prefix
, spec_machine
, dir_separator_str
,
6726 spec_version
, dir_separator_str
, NULL
);
6728 /* Now we have the specs.
6729 Set the `valid' bits for switches that match anything in any spec. */
6731 validate_all_switches ();
6733 /* Now that we have the switches and the specs, set
6734 the subdirectory based on the options. */
6735 set_multilib_dir ();
6737 /* Set up to remember the pathname of gcc and any options
6738 needed for collect. We use argv[0] instead of progname because
6739 we need the complete pathname. */
6740 obstack_init (&collect_obstack
);
6741 obstack_grow (&collect_obstack
, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6742 obstack_grow (&collect_obstack
, argv
[0], strlen (argv
[0]) + 1);
6743 xputenv (XOBFINISH (&collect_obstack
, char *));
6745 /* Set up to remember the pathname of the lto wrapper. */
6748 lto_wrapper_file
= NULL
;
6750 lto_wrapper_file
= find_a_file (&exec_prefixes
, "lto-wrapper",
6752 if (lto_wrapper_file
)
6754 lto_wrapper_file
= convert_white_space (lto_wrapper_file
);
6755 lto_wrapper_spec
= lto_wrapper_file
;
6756 obstack_init (&collect_obstack
);
6757 obstack_grow (&collect_obstack
, "COLLECT_LTO_WRAPPER=",
6758 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
6759 obstack_grow (&collect_obstack
, lto_wrapper_spec
,
6760 strlen (lto_wrapper_spec
) + 1);
6761 xputenv (XOBFINISH (&collect_obstack
, char *));
6764 /* Reject switches that no pass was interested in. */
6766 for (i
= 0; (int) i
< n_switches
; i
++)
6767 if (! switches
[i
].validated
)
6768 error ("unrecognized command line option %<-%s%>", switches
[i
].part1
);
6770 /* Obey some of the options. */
6772 if (print_search_dirs
)
6774 printf (_("install: %s%s\n"),
6775 gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
6776 gcc_exec_prefix
? "" : machine_suffix
);
6777 printf (_("programs: %s\n"),
6778 build_search_list (&exec_prefixes
, "", false, false));
6779 printf (_("libraries: %s\n"),
6780 build_search_list (&startfile_prefixes
, "", false, true));
6784 if (print_file_name
)
6786 printf ("%s\n", find_file (print_file_name
));
6790 if (print_prog_name
)
6792 if (use_ld
!= NULL
&& ! strcmp (print_prog_name
, "ld"))
6794 /* Append USE_LD to to the default linker. */
6795 #ifdef DEFAULT_LINKER
6797 # ifdef HAVE_HOST_EXECUTABLE_SUFFIX
6798 int len
= (sizeof (DEFAULT_LINKER
)
6799 - sizeof (HOST_EXECUTABLE_SUFFIX
));
6803 char *default_linker
= xstrdup (DEFAULT_LINKER
);
6804 /* Strip HOST_EXECUTABLE_SUFFIX if DEFAULT_LINKER contains
6805 HOST_EXECUTABLE_SUFFIX. */
6806 if (! strcmp (&default_linker
[len
], HOST_EXECUTABLE_SUFFIX
))
6808 default_linker
[len
] = '\0';
6809 ld
= concat (default_linker
, use_ld
,
6810 HOST_EXECUTABLE_SUFFIX
, NULL
);
6815 ld
= concat (DEFAULT_LINKER
, use_ld
, NULL
);
6816 if (access (ld
, X_OK
) == 0)
6818 printf ("%s\n", ld
);
6822 print_prog_name
= concat (print_prog_name
, use_ld
, NULL
);
6824 char *newname
= find_a_file (&exec_prefixes
, print_prog_name
, X_OK
, 0);
6825 printf ("%s\n", (newname
? newname
: print_prog_name
));
6829 if (print_multi_lib
)
6831 print_multilib_info ();
6835 if (print_multi_directory
)
6837 if (multilib_dir
== NULL
)
6840 printf ("%s\n", multilib_dir
);
6844 if (print_multiarch
)
6846 if (multiarch_dir
== NULL
)
6849 printf ("%s\n", multiarch_dir
);
6855 if (target_system_root
)
6857 if (target_sysroot_suffix
)
6858 printf ("%s%s\n", target_system_root
, target_sysroot_suffix
);
6860 printf ("%s\n", target_system_root
);
6865 if (print_multi_os_directory
)
6867 if (multilib_os_dir
== NULL
)
6870 printf ("%s\n", multilib_os_dir
);
6874 if (print_sysroot_headers_suffix
)
6876 if (*sysroot_hdrs_suffix_spec
)
6878 printf("%s\n", (target_sysroot_hdrs_suffix
6879 ? target_sysroot_hdrs_suffix
6884 /* The error status indicates that only one set of fixed
6885 headers should be built. */
6886 fatal_error ("not configured with sysroot headers suffix");
6889 if (print_help_list
)
6895 printf (_("\nFor bug reporting instructions, please see:\n"));
6896 printf ("%s.\n", bug_report_url
);
6901 /* We do not exit here. Instead we have created a fake input file
6902 called 'help-dummy' which needs to be compiled, and we pass this
6903 on the various sub-processes, along with the --help switch.
6904 Ensure their output appears after ours. */
6905 fputc ('\n', stdout
);
6911 printf (_("%s %s%s\n"), progname
, pkgversion_string
,
6913 printf ("Copyright %s 2014 Free Software Foundation, Inc.\n",
6915 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
6916 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
6921 /* We do not exit here. We use the same mechanism of --help to print
6922 the version of the sub-processes. */
6923 fputc ('\n', stdout
);
6932 fnotice (stderr
, "Target: %s\n", spec_machine
);
6933 fnotice (stderr
, "Configured with: %s\n", configuration_arguments
);
6935 #ifdef THREAD_MODEL_SPEC
6936 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6937 but there's no point in doing all this processing just to get
6938 thread_model back. */
6939 obstack_init (&obstack
);
6940 do_spec_1 (THREAD_MODEL_SPEC
, 0, thread_model
);
6941 obstack_1grow (&obstack
, '\0');
6942 thrmod
= XOBFINISH (&obstack
, const char *);
6944 thrmod
= thread_model
;
6947 fnotice (stderr
, "Thread model: %s\n", thrmod
);
6949 /* compiler_version is truncated at the first space when initialized
6950 from version string, so truncate version_string at the first space
6951 before comparing. */
6952 for (n
= 0; version_string
[n
]; n
++)
6953 if (version_string
[n
] == ' ')
6956 if (! strncmp (version_string
, compiler_version
, n
)
6957 && compiler_version
[n
] == 0)
6958 fnotice (stderr
, "gcc version %s %s\n", version_string
,
6961 fnotice (stderr
, "gcc driver version %s %sexecuting gcc version %s\n",
6962 version_string
, pkgversion_string
, compiler_version
);
6968 if (n_infiles
== added_libraries
)
6969 fatal_error ("no input files");
6974 /* Make a place to record the compiler output file names
6975 that correspond to the input files. */
6978 i
+= lang_specific_extra_outfiles
;
6979 outfiles
= XCNEWVEC (const char *, i
);
6981 /* Record which files were specified explicitly as link input. */
6983 explicit_link_files
= XCNEWVEC (char, n_infiles
);
6985 combine_inputs
= have_o
|| flag_wpa
;
6987 for (i
= 0; (int) i
< n_infiles
; i
++)
6989 const char *name
= infiles
[i
].name
;
6990 struct compiler
*compiler
= lookup_compiler (name
,
6992 infiles
[i
].language
);
6994 if (compiler
&& !(compiler
->combinable
))
6995 combine_inputs
= false;
6997 if (lang_n_infiles
> 0 && compiler
!= input_file_compiler
6998 && infiles
[i
].language
&& infiles
[i
].language
[0] != '*')
6999 infiles
[i
].incompiler
= compiler
;
7003 input_file_compiler
= compiler
;
7004 infiles
[i
].incompiler
= compiler
;
7008 /* Since there is no compiler for this input file, assume it is a
7010 explicit_link_files
[i
] = 1;
7011 infiles
[i
].incompiler
= NULL
;
7013 infiles
[i
].compiled
= false;
7014 infiles
[i
].preprocessed
= false;
7017 if (!combine_inputs
&& have_c
&& have_o
&& lang_n_infiles
> 1)
7018 fatal_error ("cannot specify -o with -c, -S or -E with multiple files");
7020 for (i
= 0; (int) i
< n_infiles
; i
++)
7022 int this_file_error
= 0;
7024 /* Tell do_spec what to substitute for %i. */
7026 input_file_number
= i
;
7027 set_input (infiles
[i
].name
);
7029 if (infiles
[i
].compiled
)
7032 /* Use the same thing in %o, unless cp->spec says otherwise. */
7034 outfiles
[i
] = gcc_input_filename
;
7036 /* Figure out which compiler from the file's suffix. */
7039 = lookup_compiler (infiles
[i
].name
, input_filename_length
,
7040 infiles
[i
].language
);
7042 if (input_file_compiler
)
7044 /* Ok, we found an applicable compiler. Run its spec. */
7046 if (input_file_compiler
->spec
[0] == '#')
7048 error ("%s: %s compiler not installed on this system",
7049 gcc_input_filename
, &input_file_compiler
->spec
[1]);
7050 this_file_error
= 1;
7056 free (debug_check_temp_file
[0]);
7057 debug_check_temp_file
[0] = NULL
;
7059 free (debug_check_temp_file
[1]);
7060 debug_check_temp_file
[1] = NULL
;
7063 value
= do_spec (input_file_compiler
->spec
);
7064 infiles
[i
].compiled
= true;
7066 this_file_error
= 1;
7067 else if (compare_debug
&& debug_check_temp_file
[0])
7070 inform (0, "recompiling with -fcompare-debug");
7072 compare_debug
= -compare_debug
;
7073 n_switches
= n_switches_debug_check
[1];
7074 n_switches_alloc
= n_switches_alloc_debug_check
[1];
7075 switches
= switches_debug_check
[1];
7077 value
= do_spec (input_file_compiler
->spec
);
7079 compare_debug
= -compare_debug
;
7080 n_switches
= n_switches_debug_check
[0];
7081 n_switches_alloc
= n_switches_alloc_debug_check
[0];
7082 switches
= switches_debug_check
[0];
7086 error ("during -fcompare-debug recompilation");
7087 this_file_error
= 1;
7090 gcc_assert (debug_check_temp_file
[1]
7091 && filename_cmp (debug_check_temp_file
[0],
7092 debug_check_temp_file
[1]));
7095 inform (0, "comparing final insns dumps");
7097 if (compare_files (debug_check_temp_file
))
7098 this_file_error
= 1;
7103 free (debug_check_temp_file
[0]);
7104 debug_check_temp_file
[0] = NULL
;
7106 free (debug_check_temp_file
[1]);
7107 debug_check_temp_file
[1] = NULL
;
7112 /* If this file's name does not contain a recognized suffix,
7113 record it as explicit linker input. */
7116 explicit_link_files
[i
] = 1;
7118 /* Clear the delete-on-failure queue, deleting the files in it
7119 if this compilation failed. */
7121 if (this_file_error
)
7123 delete_failure_queue ();
7126 /* If this compilation succeeded, don't delete those files later. */
7127 clear_failure_queue ();
7130 /* Reset the input file name to the first compile/object file name, for use
7131 with %b in LINK_SPEC. We use the first input file that we can find
7132 a compiler to compile it instead of using infiles.language since for
7133 languages other than C we use aliases that we then lookup later. */
7138 for (i
= 0; i
< n_infiles
; i
++)
7139 if (infiles
[i
].incompiler
7140 || (infiles
[i
].language
&& infiles
[i
].language
[0] != '*'))
7142 set_input (infiles
[i
].name
);
7149 /* Make sure INPUT_FILE_NUMBER points to first available open
7151 input_file_number
= n_infiles
;
7152 if (lang_specific_pre_link ())
7156 /* Determine if there are any linker input files. */
7157 num_linker_inputs
= 0;
7158 for (i
= 0; (int) i
< n_infiles
; i
++)
7159 if (explicit_link_files
[i
] || outfiles
[i
] != NULL
)
7160 num_linker_inputs
++;
7162 /* Run ld to link all the compiler output files. */
7164 if (num_linker_inputs
> 0 && !seen_error () && print_subprocess_help
< 2)
7166 int tmp
= execution_count
;
7170 #if HAVE_LTO_PLUGIN > 0
7171 #if HAVE_LTO_PLUGIN == 2
7172 const char *fno_use_linker_plugin
= "fno-use-linker-plugin";
7174 const char *fuse_linker_plugin
= "fuse-linker-plugin";
7178 /* We'll use ld if we can't find collect2. */
7179 if (! strcmp (linker_name_spec
, "collect2"))
7181 char *s
= find_a_file (&exec_prefixes
, "collect2", X_OK
, false);
7183 linker_name_spec
= "ld";
7186 #if HAVE_LTO_PLUGIN > 0
7187 #if HAVE_LTO_PLUGIN == 2
7188 if (!switch_matches (fno_use_linker_plugin
,
7189 fno_use_linker_plugin
7190 + strlen (fno_use_linker_plugin
), 0))
7192 if (switch_matches (fuse_linker_plugin
,
7194 + strlen (fuse_linker_plugin
), 0))
7197 char *temp_spec
= find_a_file (&exec_prefixes
,
7198 LTOPLUGINSONAME
, R_OK
,
7201 fatal_error ("-fuse-linker-plugin, but %s not found",
7203 linker_plugin_file_spec
= convert_white_space (temp_spec
);
7206 lto_gcc_spec
= argv
[0];
7209 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
7211 putenv_from_prefixes (&exec_prefixes
, "COMPILER_PATH", false);
7212 putenv_from_prefixes (&startfile_prefixes
, LIBRARY_PATH_ENV
, true);
7214 if (print_subprocess_help
== 1)
7216 printf (_("\nLinker options\n==============\n\n"));
7217 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
7218 " to the linker.\n\n"));
7221 value
= do_spec (link_command_spec
);
7224 linker_was_run
= (tmp
!= execution_count
);
7227 /* If options said don't run linker,
7228 complain about input files to be given to the linker. */
7230 if (! linker_was_run
&& !seen_error ())
7231 for (i
= 0; (int) i
< n_infiles
; i
++)
7232 if (explicit_link_files
[i
]
7233 && !(infiles
[i
].language
&& infiles
[i
].language
[0] == '*'))
7234 warning (0, "%s: linker input file unused because linking not done",
7237 /* Delete some or all of the temporary files we made. */
7240 delete_failure_queue ();
7241 delete_temp_files ();
7243 if (print_help_list
)
7245 printf (("\nFor bug reporting instructions, please see:\n"));
7246 printf ("%s\n", bug_report_url
);
7250 return (signal_count
!= 0 ? 2
7251 : seen_error () ? (pass_exit_codes
? greatest_status
: 1)
7255 /* Find the proper compilation spec for the file name NAME,
7256 whose length is LENGTH. LANGUAGE is the specified language,
7257 or 0 if this file is to be passed to the linker. */
7259 static struct compiler
*
7260 lookup_compiler (const char *name
, size_t length
, const char *language
)
7262 struct compiler
*cp
;
7264 /* If this was specified by the user to be a linker input, indicate that. */
7265 if (language
!= 0 && language
[0] == '*')
7268 /* Otherwise, look for the language, if one is spec'd. */
7271 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7272 if (cp
->suffix
[0] == '@' && !strcmp (cp
->suffix
+ 1, language
))
7275 error ("language %s not recognized", language
);
7279 /* Look for a suffix. */
7280 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7282 if (/* The suffix `-' matches only the file name `-'. */
7283 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
7284 || (strlen (cp
->suffix
) < length
7285 /* See if the suffix matches the end of NAME. */
7286 && !strcmp (cp
->suffix
,
7287 name
+ length
- strlen (cp
->suffix
))
7292 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
7293 /* Look again, but case-insensitively this time. */
7295 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7297 if (/* The suffix `-' matches only the file name `-'. */
7298 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
7299 || (strlen (cp
->suffix
) < length
7300 /* See if the suffix matches the end of NAME. */
7301 && ((!strcmp (cp
->suffix
,
7302 name
+ length
- strlen (cp
->suffix
))
7303 || !strpbrk (cp
->suffix
, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
7304 && !strcasecmp (cp
->suffix
,
7305 name
+ length
- strlen (cp
->suffix
)))
7311 if (cp
>= compilers
)
7313 if (cp
->spec
[0] != '@')
7314 /* A non-alias entry: return it. */
7317 /* An alias entry maps a suffix to a language.
7318 Search for the language; pass 0 for NAME and LENGTH
7319 to avoid infinite recursion if language not found. */
7320 return lookup_compiler (NULL
, 0, cp
->spec
+ 1);
7326 save_string (const char *s
, int len
)
7328 char *result
= XNEWVEC (char, len
+ 1);
7330 memcpy (result
, s
, len
);
7336 pfatal_with_name (const char *name
)
7338 perror_with_name (name
);
7339 delete_temp_files ();
7344 perror_with_name (const char *name
)
7346 error ("%s: %m", name
);
7350 validate_switches_from_spec (const char *spec
, bool user
)
7352 const char *p
= spec
;
7355 if (c
== '%' && (*p
== '{' || *p
== '<' || (*p
== 'W' && *++p
== '{')))
7356 /* We have a switch spec. */
7357 p
= validate_switches (p
+ 1, user
);
7361 validate_all_switches (void)
7363 struct compiler
*comp
;
7364 struct spec_list
*spec
;
7366 for (comp
= compilers
; comp
->spec
; comp
++)
7367 validate_switches_from_spec (comp
->spec
, false);
7369 /* Look through the linked list of specs read from the specs file. */
7370 for (spec
= specs
; spec
; spec
= spec
->next
)
7371 validate_switches_from_spec (*spec
->ptr_spec
, spec
->user_p
);
7373 validate_switches_from_spec (link_command_spec
, false);
7376 /* Look at the switch-name that comes after START
7377 and mark as valid all supplied switches that match it. */
7380 validate_switches (const char *start
, bool user_spec
)
7382 const char *p
= start
;
7386 bool suffix
= false;
7387 bool starred
= false;
7389 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7398 if (*p
== '.' || *p
== ',')
7402 while (ISIDNUM (*p
) || *p
== '-' || *p
== '+' || *p
== '='
7403 || *p
== ',' || *p
== '.' || *p
== '@')
7408 starred
= true, p
++;
7414 /* Mark all matching switches as valid. */
7415 for (i
= 0; i
< n_switches
; i
++)
7416 if (!strncmp (switches
[i
].part1
, atom
, len
)
7417 && (starred
|| switches
[i
].part1
[len
] == '\0')
7418 && (switches
[i
].known
|| user_spec
))
7419 switches
[i
].validated
= true;
7423 if (*p
&& (p
[-1] == '|' || p
[-1] == '&'))
7426 if (*p
&& p
[-1] == ':')
7428 while (*p
&& *p
!= ';' && *p
!= '}')
7433 if (*p
== '{' || *p
== '<')
7434 p
= validate_switches (p
+1, user_spec
);
7435 else if (p
[0] == 'W' && p
[1] == '{')
7436 p
= validate_switches (p
+2, user_spec
);
7443 if (*p
&& p
[-1] == ';')
7457 static struct mdswitchstr
*mdswitches
;
7458 static int n_mdswitches
;
7460 /* Check whether a particular argument was used. The first time we
7461 canonicalize the switches to keep only the ones we care about. */
7464 used_arg (const char *p
, int len
)
7469 const char *replace
;
7474 static struct mswitchstr
*mswitches
;
7475 static int n_mswitches
;
7480 struct mswitchstr
*matches
;
7484 /* Break multilib_matches into the component strings of string
7485 and replacement string. */
7486 for (q
= multilib_matches
; *q
!= '\0'; q
++)
7491 = (struct mswitchstr
*) alloca ((sizeof (struct mswitchstr
)) * cnt
);
7493 q
= multilib_matches
;
7502 fatal_error ("multilib spec %qs is invalid",
7507 matches
[i
].len
= q
- matches
[i
].str
;
7509 matches
[i
].replace
= ++q
;
7510 while (*q
!= ';' && *q
!= '\0')
7513 goto invalid_matches
;
7516 matches
[i
].rep_len
= q
- matches
[i
].replace
;
7522 /* Now build a list of the replacement string for switches that we care
7523 about. Make sure we allocate at least one entry. This prevents
7524 xmalloc from calling fatal, and prevents us from re-executing this
7527 = XNEWVEC (struct mswitchstr
, n_mdswitches
+ (n_switches
? n_switches
: 1));
7528 for (i
= 0; i
< n_switches
; i
++)
7529 if ((switches
[i
].live_cond
& SWITCH_IGNORE
) == 0)
7531 int xlen
= strlen (switches
[i
].part1
);
7532 for (j
= 0; j
< cnt
; j
++)
7533 if (xlen
== matches
[j
].len
7534 && ! strncmp (switches
[i
].part1
, matches
[j
].str
, xlen
))
7536 mswitches
[n_mswitches
].str
= matches
[j
].replace
;
7537 mswitches
[n_mswitches
].len
= matches
[j
].rep_len
;
7538 mswitches
[n_mswitches
].replace
= (char *) 0;
7539 mswitches
[n_mswitches
].rep_len
= 0;
7545 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7546 on the command line nor any options mutually incompatible with
7548 for (i
= 0; i
< n_mdswitches
; i
++)
7552 for (q
= multilib_options
; *q
!= '\0'; *q
&& q
++)
7558 while (strncmp (q
, mdswitches
[i
].str
, mdswitches
[i
].len
) != 0
7559 || strchr (" /", q
[mdswitches
[i
].len
]) == NULL
)
7561 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
7568 if (*q
!= ' ' && *q
!= '\0')
7570 while (*r
!= ' ' && *r
!= '\0')
7573 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
7576 if (used_arg (r
, q
- r
))
7581 mswitches
[n_mswitches
].str
= mdswitches
[i
].str
;
7582 mswitches
[n_mswitches
].len
= mdswitches
[i
].len
;
7583 mswitches
[n_mswitches
].replace
= (char *) 0;
7584 mswitches
[n_mswitches
].rep_len
= 0;
7597 for (i
= 0; i
< n_mswitches
; i
++)
7598 if (len
== mswitches
[i
].len
&& ! strncmp (p
, mswitches
[i
].str
, len
))
7605 default_arg (const char *p
, int len
)
7609 for (i
= 0; i
< n_mdswitches
; i
++)
7610 if (len
== mdswitches
[i
].len
&& ! strncmp (p
, mdswitches
[i
].str
, len
))
7616 /* Work out the subdirectory to use based on the options. The format of
7617 multilib_select is a list of elements. Each element is a subdirectory
7618 name followed by a list of options followed by a semicolon. The format
7619 of multilib_exclusions is the same, but without the preceding
7620 directory. First gcc will check the exclusions, if none of the options
7621 beginning with an exclamation point are present, and all of the other
7622 options are present, then we will ignore this completely. Passing
7623 that, gcc will consider each multilib_select in turn using the same
7624 rules for matching the options. If a match is found, that subdirectory
7626 A subdirectory name is optionally followed by a colon and the corresponding
7630 set_multilib_dir (void)
7633 unsigned int this_path_len
;
7634 const char *this_path
, *this_arg
;
7635 const char *start
, *end
;
7637 int ok
, ndfltok
, first
;
7640 start
= multilib_defaults
;
7641 while (*start
== ' ' || *start
== '\t')
7643 while (*start
!= '\0')
7646 while (*start
!= ' ' && *start
!= '\t' && *start
!= '\0')
7648 while (*start
== ' ' || *start
== '\t')
7656 mdswitches
= XNEWVEC (struct mdswitchstr
, n_mdswitches
);
7657 for (start
= multilib_defaults
; *start
!= '\0'; start
= end
+ 1)
7659 while (*start
== ' ' || *start
== '\t')
7665 for (end
= start
+ 1;
7666 *end
!= ' ' && *end
!= '\t' && *end
!= '\0'; end
++)
7669 obstack_grow (&multilib_obstack
, start
, end
- start
);
7670 obstack_1grow (&multilib_obstack
, 0);
7671 mdswitches
[i
].str
= XOBFINISH (&multilib_obstack
, const char *);
7672 mdswitches
[i
++].len
= end
- start
;
7679 p
= multilib_exclusions
;
7682 /* Ignore newlines. */
7689 /* Check the arguments. */
7696 fatal_error ("multilib exclusions %qs is invalid",
7697 multilib_exclusions
);
7707 while (*p
!= ' ' && *p
!= ';')
7710 goto invalid_exclusions
;
7714 if (*this_arg
!= '!')
7722 ok
= used_arg (this_arg
, p
- this_arg
);
7737 p
= multilib_select
;
7739 /* Append multilib reuse rules if any. With those rules, we can reuse
7740 one multilib for certain different options sets. */
7741 if (strlen (multilib_reuse
) > 0)
7742 p
= concat (p
, multilib_reuse
, NULL
);
7746 /* Ignore newlines. */
7753 /* Get the initial path. */
7760 fatal_error ("multilib select %qs %qs is invalid",
7761 multilib_select
, multilib_reuse
);
7765 this_path_len
= p
- this_path
;
7767 /* Check the arguments. */
7774 goto invalid_select
;
7783 while (*p
!= ' ' && *p
!= ';')
7786 goto invalid_select
;
7790 if (*this_arg
!= '!')
7798 /* If this is a default argument, we can just ignore it.
7799 This is true even if this_arg begins with '!'. Beginning
7800 with '!' does not mean that this argument is necessarily
7801 inappropriate for this library: it merely means that
7802 there is a more specific library which uses this
7803 argument. If this argument is a default, we need not
7804 consider that more specific library. */
7805 ok
= used_arg (this_arg
, p
- this_arg
);
7812 if (default_arg (this_arg
, p
- this_arg
))
7821 if (this_path_len
!= 1
7822 || this_path
[0] != '.')
7824 char *new_multilib_dir
= XNEWVEC (char, this_path_len
+ 1);
7827 strncpy (new_multilib_dir
, this_path
, this_path_len
);
7828 new_multilib_dir
[this_path_len
] = '\0';
7829 q
= strchr (new_multilib_dir
, ':');
7832 multilib_dir
= new_multilib_dir
;
7839 const char *q
= this_path
, *end
= this_path
+ this_path_len
;
7841 while (q
< end
&& *q
!= ':')
7845 const char *q2
= q
+ 1, *ml_end
= end
;
7846 char *new_multilib_os_dir
;
7848 while (q2
< end
&& *q2
!= ':')
7852 if (ml_end
- q
== 1)
7853 multilib_os_dir
= xstrdup (".");
7856 new_multilib_os_dir
= XNEWVEC (char, ml_end
- q
);
7857 memcpy (new_multilib_os_dir
, q
+ 1, ml_end
- q
- 1);
7858 new_multilib_os_dir
[ml_end
- q
- 1] = '\0';
7859 multilib_os_dir
= new_multilib_os_dir
;
7862 if (q2
< end
&& *q2
== ':')
7864 char *new_multiarch_dir
= XNEWVEC (char, end
- q2
);
7865 memcpy (new_multiarch_dir
, q2
+ 1, end
- q2
- 1);
7866 new_multiarch_dir
[end
- q2
- 1] = '\0';
7867 multiarch_dir
= new_multiarch_dir
;
7876 if (multilib_dir
== NULL
&& multilib_os_dir
!= NULL
7877 && strcmp (multilib_os_dir
, ".") == 0)
7879 free (CONST_CAST (char *, multilib_os_dir
));
7880 multilib_os_dir
= NULL
;
7882 else if (multilib_dir
!= NULL
&& multilib_os_dir
== NULL
)
7883 multilib_os_dir
= multilib_dir
;
7886 /* Print out the multiple library subdirectory selection
7887 information. This prints out a series of lines. Each line looks
7888 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7889 required. Only the desired options are printed out, the negative
7890 matches. The options are print without a leading dash. There are
7891 no spaces to make it easy to use the information in the shell.
7892 Each subdirectory is printed only once. This assumes the ordering
7893 generated by the genmultilib script. Also, we leave out ones that match
7897 print_multilib_info (void)
7899 const char *p
= multilib_select
;
7900 const char *last_path
= 0, *this_path
;
7902 unsigned int last_path_len
= 0;
7907 /* Ignore newlines. */
7914 /* Get the initial path. */
7921 fatal_error ("multilib select %qs is invalid", multilib_select
);
7927 /* When --disable-multilib was used but target defines
7928 MULTILIB_OSDIRNAMES, entries starting with .: (and not starting
7929 with .:: for multiarch configurations) are there just to find
7930 multilib_os_dir, so skip them from output. */
7931 if (this_path
[0] == '.' && this_path
[1] == ':' && this_path
[2] != ':')
7934 /* Check for matches with the multilib_exclusions. We don't bother
7935 with the '!' in either list. If any of the exclusion rules match
7936 all of its options with the select rule, we skip it. */
7938 const char *e
= multilib_exclusions
;
7939 const char *this_arg
;
7944 /* Ignore newlines. */
7951 /* Check the arguments. */
7960 fatal_error ("multilib exclusion %qs is invalid",
7961 multilib_exclusions
);
7972 while (*e
!= ' ' && *e
!= ';')
7975 goto invalid_exclusion
;
7983 int len
= e
- this_arg
;
7986 goto invalid_select
;
7990 while (*q
!= ' ' && *q
!= ';')
7993 goto invalid_select
;
7997 if (! strncmp (arg
, this_arg
,
7998 (len
< q
- arg
) ? q
- arg
: len
)
7999 || default_arg (this_arg
, e
- this_arg
))
8029 /* If this is a duplicate, skip it. */
8030 skip
= (last_path
!= 0
8031 && (unsigned int) (p
- this_path
) == last_path_len
8032 && ! filename_ncmp (last_path
, this_path
, last_path_len
));
8034 last_path
= this_path
;
8035 last_path_len
= p
- this_path
;
8038 /* If this directory requires any default arguments, we can skip
8039 it. We will already have printed a directory identical to
8040 this one which does not require that default argument. */
8051 goto invalid_select
;
8058 while (*q
!= ' ' && *q
!= ';')
8061 goto invalid_select
;
8066 && default_arg (arg
, q
- arg
))
8081 for (p1
= last_path
; p1
< p
&& *p1
!= ':'; p1
++)
8092 goto invalid_select
;
8100 use_arg
= *p
!= '!';
8105 while (*p
!= ' ' && *p
!= ';')
8108 goto invalid_select
;
8120 /* If there are extra options, print them now. */
8121 if (multilib_extra
&& *multilib_extra
)
8123 int print_at
= TRUE
;
8126 for (q
= multilib_extra
; *q
!= '\0'; q
++)
8147 /* getenv built-in spec function.
8149 Returns the value of the environment variable given by its first
8150 argument, concatenated with the second argument. If the
8151 environment variable is not defined, a fatal error is issued. */
8154 getenv_spec_function (int argc
, const char **argv
)
8164 value
= getenv (argv
[0]);
8166 fatal_error ("environment variable %qs not defined", argv
[0]);
8168 /* We have to escape every character of the environment variable so
8169 they are not interpreted as active spec characters. A
8170 particularly painful case is when we are reading a variable
8171 holding a windows path complete with \ separators. */
8172 len
= strlen (value
) * 2 + strlen (argv
[1]) + 1;
8173 result
= XNEWVAR (char, len
);
8174 for (ptr
= result
; *value
; ptr
+= 2)
8180 strcpy (ptr
, argv
[1]);
8185 /* if-exists built-in spec function.
8187 Checks to see if the file specified by the absolute pathname in
8188 ARGS exists. Returns that pathname if found.
8190 The usual use for this function is to check for a library file
8191 (whose name has been expanded with %s). */
8194 if_exists_spec_function (int argc
, const char **argv
)
8196 /* Must have only one argument. */
8197 if (argc
== 1 && IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
8203 /* if-exists-else built-in spec function.
8205 This is like if-exists, but takes an additional argument which
8206 is returned if the first argument does not exist. */
8209 if_exists_else_spec_function (int argc
, const char **argv
)
8211 /* Must have exactly two arguments. */
8215 if (IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
8221 /* sanitize built-in spec function.
8223 This returns non-NULL, if sanitizing address, thread or
8224 any of the undefined behavior sanitizers. */
8227 sanitize_spec_function (int argc
, const char **argv
)
8232 if (strcmp (argv
[0], "address") == 0)
8233 return (flag_sanitize
& SANITIZE_USER_ADDRESS
) ? "" : NULL
;
8234 if (strcmp (argv
[0], "kernel-address") == 0)
8235 return (flag_sanitize
& SANITIZE_KERNEL_ADDRESS
) ? "" : NULL
;
8236 if (strcmp (argv
[0], "thread") == 0)
8237 return (flag_sanitize
& SANITIZE_THREAD
) ? "" : NULL
;
8238 if (strcmp (argv
[0], "undefined") == 0)
8239 return ((flag_sanitize
& (SANITIZE_UNDEFINED
| SANITIZE_NONDEFAULT
))
8240 && !flag_sanitize_undefined_trap_on_error
) ? "" : NULL
;
8241 if (strcmp (argv
[0], "leak") == 0)
8242 return ((flag_sanitize
8243 & (SANITIZE_ADDRESS
| SANITIZE_LEAK
| SANITIZE_THREAD
))
8244 == SANITIZE_LEAK
) ? "" : NULL
;
8248 /* replace-outfile built-in spec function.
8250 This looks for the first argument in the outfiles array's name and
8251 replaces it with the second argument. */
8254 replace_outfile_spec_function (int argc
, const char **argv
)
8257 /* Must have exactly two arguments. */
8261 for (i
= 0; i
< n_infiles
; i
++)
8263 if (outfiles
[i
] && !filename_cmp (outfiles
[i
], argv
[0]))
8264 outfiles
[i
] = xstrdup (argv
[1]);
8269 /* remove-outfile built-in spec function.
8271 * This looks for the first argument in the outfiles array's name and
8275 remove_outfile_spec_function (int argc
, const char **argv
)
8278 /* Must have exactly one argument. */
8282 for (i
= 0; i
< n_infiles
; i
++)
8284 if (outfiles
[i
] && !filename_cmp (outfiles
[i
], argv
[0]))
8290 /* Given two version numbers, compares the two numbers.
8291 A version number must match the regular expression
8292 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
8295 compare_version_strings (const char *v1
, const char *v2
)
8300 if (regcomp (&r
, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
8301 REG_EXTENDED
| REG_NOSUB
) != 0)
8303 rresult
= regexec (&r
, v1
, 0, NULL
, 0);
8304 if (rresult
== REG_NOMATCH
)
8305 fatal_error ("invalid version number %qs", v1
);
8306 else if (rresult
!= 0)
8308 rresult
= regexec (&r
, v2
, 0, NULL
, 0);
8309 if (rresult
== REG_NOMATCH
)
8310 fatal_error ("invalid version number %qs", v2
);
8311 else if (rresult
!= 0)
8314 return strverscmp (v1
, v2
);
8318 /* version_compare built-in spec function.
8320 This takes an argument of the following form:
8322 <comparison-op> <arg1> [<arg2>] <switch> <result>
8324 and produces "result" if the comparison evaluates to true,
8325 and nothing if it doesn't.
8327 The supported <comparison-op> values are:
8329 >= true if switch is a later (or same) version than arg1
8331 < true if switch is an earlier version than arg1
8333 >< true if switch is arg1 or later, and earlier than arg2
8334 <> true if switch is earlier than arg1 or is arg2 or later
8336 If the switch is not present, the condition is false unless
8337 the first character of the <comparison-op> is '!'.
8340 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
8341 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
8344 version_compare_spec_function (int argc
, const char **argv
)
8348 const char *switch_value
= NULL
;
8353 fatal_error ("too few arguments to %%:version-compare");
8354 if (argv
[0][0] == '\0')
8356 if ((argv
[0][1] == '<' || argv
[0][1] == '>') && argv
[0][0] != '!')
8358 if (argc
!= nargs
+ 3)
8359 fatal_error ("too many arguments to %%:version-compare");
8361 switch_len
= strlen (argv
[nargs
+ 1]);
8362 for (i
= 0; i
< n_switches
; i
++)
8363 if (!strncmp (switches
[i
].part1
, argv
[nargs
+ 1], switch_len
)
8364 && check_live_switch (i
, switch_len
))
8365 switch_value
= switches
[i
].part1
+ switch_len
;
8367 if (switch_value
== NULL
)
8371 comp1
= compare_version_strings (switch_value
, argv
[1]);
8373 comp2
= compare_version_strings (switch_value
, argv
[2]);
8375 comp2
= -1; /* This value unused. */
8378 switch (argv
[0][0] << 8 | argv
[0][1])
8380 case '>' << 8 | '=':
8381 result
= comp1
>= 0;
8383 case '!' << 8 | '<':
8384 result
= comp1
>= 0 || switch_value
== NULL
;
8389 case '!' << 8 | '>':
8390 result
= comp1
< 0 || switch_value
== NULL
;
8392 case '>' << 8 | '<':
8393 result
= comp1
>= 0 && comp2
< 0;
8395 case '<' << 8 | '>':
8396 result
= comp1
< 0 || comp2
>= 0;
8400 fatal_error ("unknown operator %qs in %%:version-compare", argv
[0]);
8405 return argv
[nargs
+ 2];
8408 /* %:include builtin spec function. This differs from %include in that it
8409 can be nested inside a spec, and thus be conditionalized. It takes
8410 one argument, the filename, and looks for it in the startfile path.
8411 The result is always NULL, i.e. an empty expansion. */
8414 include_spec_function (int argc
, const char **argv
)
8421 file
= find_a_file (&startfile_prefixes
, argv
[0], R_OK
, true);
8422 read_specs (file
? file
: argv
[0], false, false);
8427 /* %:find-file spec function. This function replaces its argument by
8428 the file found through find_file, that is the -print-file-name gcc
8431 find_file_spec_function (int argc
, const char **argv
)
8438 file
= find_file (argv
[0]);
8443 /* %:find-plugindir spec function. This function replaces its argument
8444 by the -iplugindir=<dir> option. `dir' is found through find_file, that
8445 is the -print-file-name gcc program option. */
8447 find_plugindir_spec_function (int argc
, const char **argv ATTRIBUTE_UNUSED
)
8454 option
= concat ("-iplugindir=", find_file ("plugin"), NULL
);
8459 /* %:print-asm-header spec function. Print a banner to say that the
8460 following output is from the assembler. */
8463 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED
,
8464 const char **argv ATTRIBUTE_UNUSED
)
8466 printf (_("Assembler options\n=================\n\n"));
8467 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
8472 /* Get a random number for -frandom-seed */
8474 static unsigned HOST_WIDE_INT
8475 get_random_number (void)
8477 unsigned HOST_WIDE_INT ret
= 0;
8480 fd
= open ("/dev/urandom", O_RDONLY
);
8483 read (fd
, &ret
, sizeof (HOST_WIDE_INT
));
8489 /* Get some more or less random data. */
8490 #ifdef HAVE_GETTIMEOFDAY
8494 gettimeofday (&tv
, NULL
);
8495 ret
= tv
.tv_sec
* 1000 + tv
.tv_usec
/ 1000;
8499 time_t now
= time (NULL
);
8501 if (now
!= (time_t)-1)
8502 ret
= (unsigned) now
;
8506 return ret
^ getpid ();
8509 /* %:compare-debug-dump-opt spec function. Save the last argument,
8510 expected to be the last -fdump-final-insns option, or generate a
8514 compare_debug_dump_opt_spec_function (int arg
,
8515 const char **argv ATTRIBUTE_UNUSED
)
8520 static char random_seed
[HOST_BITS_PER_WIDE_INT
/ 4 + 3];
8523 fatal_error ("too many arguments to %%:compare-debug-dump-opt");
8525 do_spec_2 ("%{fdump-final-insns=*:%*}");
8526 do_spec_1 (" ", 0, NULL
);
8528 if (argbuf
.length () > 0
8529 && strcmp (argv
[argbuf
.length () - 1], "."))
8534 name
= xstrdup (argv
[argbuf
.length () - 1]);
8539 const char *ext
= NULL
;
8541 if (argbuf
.length () > 0)
8543 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
8546 else if (!compare_debug
)
8549 do_spec_2 ("%g.gkd");
8551 do_spec_1 (" ", 0, NULL
);
8553 gcc_assert (argbuf
.length () > 0);
8555 name
= concat (argbuf
.last (), ext
, NULL
);
8557 ret
= concat ("-fdump-final-insns=", name
, NULL
);
8560 which
= compare_debug
< 0;
8561 debug_check_temp_file
[which
] = name
;
8565 unsigned HOST_WIDE_INT value
= get_random_number ();
8567 sprintf (random_seed
, HOST_WIDE_INT_PRINT_HEX
, value
);
8573 ret
= concat ("%{!frandom-seed=*:-frandom-seed=", random_seed
, "} ",
8584 static const char *debug_auxbase_opt
;
8586 /* %:compare-debug-self-opt spec function. Expands to the options
8587 that are to be passed in the second compilation of
8591 compare_debug_self_opt_spec_function (int arg
,
8592 const char **argv ATTRIBUTE_UNUSED
)
8595 fatal_error ("too many arguments to %%:compare-debug-self-opt");
8597 if (compare_debug
>= 0)
8600 do_spec_2 ("%{c|S:%{o*:%*}}");
8601 do_spec_1 (" ", 0, NULL
);
8603 if (argbuf
.length () > 0)
8604 debug_auxbase_opt
= concat ("-auxbase-strip ",
8608 debug_auxbase_opt
= NULL
;
8611 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
8612 %<fdump-final-insns=* -w -S -o %j \
8613 %{!fcompare-debug-second:-fcompare-debug-second} \
8614 ", compare_debug_opt
, NULL
);
8617 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
8618 options that are to be passed in the second compilation of
8619 compare-debug. It expects, as an argument, the basename of the
8620 current input file name, with the .gk suffix appended to it. */
8623 compare_debug_auxbase_opt_spec_function (int arg
,
8630 fatal_error ("too few arguments to %%:compare-debug-auxbase-opt");
8633 fatal_error ("too many arguments to %%:compare-debug-auxbase-opt");
8635 if (compare_debug
>= 0)
8638 len
= strlen (argv
[0]);
8639 if (len
< 3 || strcmp (argv
[0] + len
- 3, ".gk") != 0)
8640 fatal_error ("argument to %%:compare-debug-auxbase-opt "
8641 "does not end in .gk");
8643 if (debug_auxbase_opt
)
8644 return debug_auxbase_opt
;
8646 #define OPT "-auxbase "
8649 name
= (char*) xmalloc (sizeof (OPT
) + len
);
8650 memcpy (name
, OPT
, sizeof (OPT
) - 1);
8651 memcpy (name
+ sizeof (OPT
) - 1, argv
[0], len
);
8652 name
[sizeof (OPT
) - 1 + len
] = '\0';
8659 /* %:pass-through-libs spec function. Finds all -l options and input
8660 file names in the lib spec passed to it, and makes a list of them
8661 prepended with the plugin option to cause them to be passed through
8662 to the final link after all the new object files have been added. */
8665 pass_through_libs_spec_func (int argc
, const char **argv
)
8667 char *prepended
= xstrdup (" ");
8669 /* Shlemiel the painter's algorithm. Innately horrible, but at least
8670 we know that there will never be more than a handful of strings to
8671 concat, and it's only once per run, so it's not worth optimising. */
8672 for (n
= 0; n
< argc
; n
++)
8674 char *old
= prepended
;
8675 /* Anything that isn't an option is a full path to an output
8676 file; pass it through if it ends in '.a'. Among options,
8678 if (argv
[n
][0] == '-' && argv
[n
][1] == 'l')
8680 const char *lopt
= argv
[n
] + 2;
8681 /* Handle both joined and non-joined -l options. If for any
8682 reason there's a trailing -l with no joined or following
8683 arg just discard it. */
8684 if (!*lopt
&& ++n
>= argc
)
8688 prepended
= concat (prepended
, "-plugin-opt=-pass-through=-l",
8691 else if (!strcmp (".a", argv
[n
] + strlen (argv
[n
]) - 2))
8693 prepended
= concat (prepended
, "-plugin-opt=-pass-through=",
8694 argv
[n
], " ", NULL
);
8696 if (prepended
!= old
)
8702 /* %:replace-extension spec function. Replaces the extension of the
8703 first argument with the second argument. */
8706 replace_extension_spec_func (int argc
, const char **argv
)
8714 fatal_error ("too few arguments to %%:replace-extension");
8716 name
= xstrdup (argv
[0]);
8718 for (i
= strlen (name
) - 1; i
>= 0; i
--)
8719 if (IS_DIR_SEPARATOR (name
[i
]))
8722 p
= strrchr (name
+ i
+ 1, '.');
8726 result
= concat (name
, argv
[1], NULL
);
8732 /* Insert backslash before spaces in ORIG (usually a file path), to
8733 avoid being broken by spec parser.
8735 This function is needed as do_spec_1 treats white space (' ' and '\t')
8736 as the end of an argument. But in case of -plugin /usr/gcc install/xxx.so,
8737 the file name should be treated as a single argument rather than being
8738 broken into multiple. Solution is to insert '\\' before the space in a
8741 This function converts and only converts all occurrence of ' '
8742 to '\\' + ' ' and '\t' to '\\' + '\t'. For example:
8746 "a\\ b" -> "a\\\\ b"
8748 orig: input null-terminating string that was allocated by xalloc. The
8749 memory it points to might be freed in this function. Behavior undefined
8750 if ORIG wasn't xalloced or was freed already at entry.
8752 Return: ORIG if no conversion needed. Otherwise a newly allocated string
8753 that was converted from ORIG. */
8756 convert_white_space (char *orig
)
8758 int len
, number_of_space
= 0;
8760 for (len
= 0; orig
[len
]; len
++)
8761 if (orig
[len
] == ' ' || orig
[len
] == '\t') number_of_space
++;
8763 if (number_of_space
)
8765 char *new_spec
= (char *) xmalloc (len
+ number_of_space
+ 1);
8767 for (j
= 0, k
= 0; j
<= len
; j
++, k
++)
8769 if (orig
[j
] == ' ' || orig
[j
] == '\t')
8770 new_spec
[k
++] = '\\';
8771 new_spec
[k
] = orig
[j
];