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 %{!nostdlib:%{!nostartfiles:%{fupc:%:include(upc-crtbegin.spec)%(upc_crtbegin)}}}\
826 %{static:} %{L*} %(mfwrap) %(link_libgcc) " SANITIZER_EARLY_SPEC " %o\
827 %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
828 %{fcilkplus:%:include(libcilkrts.spec)%(link_cilkrts)}\
829 %{fgnu-tm:%:include(libitm.spec)%(link_itm)}\
830 %{fupc:%:include(libgupc.spec)%(link_upc)}\
831 %(mflib) " STACK_SPLIT_SPEC "\
832 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} " SANITIZER_SPEC " \
833 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
834 %{!nostdlib:%{!nostartfiles:%{fupc:%:include(upc-crtend.spec)%(upc_crtend)}}}\
835 %{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}"
838 #ifndef LINK_LIBGCC_SPEC
839 /* Generate -L options for startfile prefix list. */
840 # define LINK_LIBGCC_SPEC "%D"
843 #ifndef STARTFILE_PREFIX_SPEC
844 # define STARTFILE_PREFIX_SPEC ""
848 # define SYSROOT_SPEC "--sysroot=%R"
851 #ifndef SYSROOT_SUFFIX_SPEC
852 # define SYSROOT_SUFFIX_SPEC ""
855 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
856 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
859 static const char *asm_debug
= ASM_DEBUG_SPEC
;
860 static const char *cpp_spec
= CPP_SPEC
;
861 static const char *cc1_spec
= CC1_SPEC
;
862 static const char *cc1plus_spec
= CC1PLUS_SPEC
;
863 static const char *link_gcc_c_sequence_spec
= LINK_GCC_C_SEQUENCE_SPEC
;
864 static const char *link_ssp_spec
= LINK_SSP_SPEC
;
865 static const char *asm_spec
= ASM_SPEC
;
866 static const char *asm_final_spec
= ASM_FINAL_SPEC
;
867 static const char *link_spec
= LINK_SPEC
;
868 static const char *lib_spec
= LIB_SPEC
;
869 static const char *link_gomp_spec
= "";
870 static const char *upc_crtbegin_spec
= "";
871 static const char *link_upc_spec
= "";
872 static const char *upc_crtend_spec
= "";
873 static const char *libgcc_spec
= LIBGCC_SPEC
;
874 static const char *endfile_spec
= ENDFILE_SPEC
;
875 static const char *startfile_spec
= STARTFILE_SPEC
;
876 static const char *linker_name_spec
= LINKER_NAME
;
877 static const char *linker_plugin_file_spec
= "";
878 static const char *lto_wrapper_spec
= "";
879 static const char *lto_gcc_spec
= "";
880 static const char *link_command_spec
= LINK_COMMAND_SPEC
;
881 static const char *link_libgcc_spec
= LINK_LIBGCC_SPEC
;
882 static const char *startfile_prefix_spec
= STARTFILE_PREFIX_SPEC
;
883 static const char *sysroot_spec
= SYSROOT_SPEC
;
884 static const char *sysroot_suffix_spec
= SYSROOT_SUFFIX_SPEC
;
885 static const char *sysroot_hdrs_suffix_spec
= SYSROOT_HEADERS_SUFFIX_SPEC
;
886 static const char *self_spec
= "";
888 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
889 There should be no need to override these in target dependent files,
890 but we need to copy them to the specs file so that newer versions
891 of the GCC driver can correctly drive older tool chains with the
892 appropriate -B options. */
894 /* When cpplib handles traditional preprocessing, get rid of this, and
895 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
896 that we default the front end language better. */
897 static const char *trad_capable_cpp
=
898 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}";
900 /* We don't wrap .d files in %W{} since a missing .d file, and
901 therefore no dependency entry, confuses make into thinking a .o
902 file that happens to exist is up-to-date. */
903 static const char *cpp_unique_options
=
904 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
905 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
906 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
907 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
908 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
909 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
910 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
911 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
914 /* This contains cpp options which are common with cc1_options and are passed
915 only when preprocessing only to avoid duplication. We pass the cc1 spec
916 options to the preprocessor so that it the cc1 spec may manipulate
917 options used to set target flags. Those special target flags settings may
918 in turn cause preprocessor symbols to be defined specially. */
919 static const char *cpp_options
=
920 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
921 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
922 %{undef} %{save-temps*:-fpch-preprocess}";
924 /* This contains cpp options which are not passed when the preprocessor
925 output will be used by another program. */
926 static const char *cpp_debug_options
= "%{d*}";
928 /* NB: This is shared amongst all front-ends, except for Ada. */
929 static const char *cc1_options
=
930 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
931 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
932 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
933 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
934 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
935 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
936 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
937 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\
938 %{-target-help:--target-help}\
939 %{-version:--version}\
940 %{-help=*:--help=%*}\
941 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
942 %{fsyntax-only:-o %j} %{-param*}\
943 %{coverage:-fprofile-arcs -ftest-coverage}";
945 static const char *upc_options
=
946 "-fupc %{!fno-upc-pre-include:-include gcc-upc.h}";
948 static const char *asm_options
=
949 "%{-target-help:%:print-asm-header()} "
951 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
952 to the assembler equivalents. */
953 "%{v} %{w:-W} %{I*} "
955 ASM_COMPRESS_DEBUG_SPEC
956 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
958 static const char *invoke_as
=
959 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
961 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
962 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
966 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
967 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
971 /* Some compilers have limits on line lengths, and the multilib_select
972 and/or multilib_matches strings can be very long, so we build them at
974 static struct obstack multilib_obstack
;
975 static const char *multilib_select
;
976 static const char *multilib_matches
;
977 static const char *multilib_defaults
;
978 static const char *multilib_exclusions
;
979 static const char *multilib_reuse
;
981 /* Check whether a particular argument is a default argument. */
983 #ifndef MULTILIB_DEFAULTS
984 #define MULTILIB_DEFAULTS { "" }
987 static const char *const multilib_defaults_raw
[] = MULTILIB_DEFAULTS
;
989 #ifndef DRIVER_SELF_SPECS
990 #define DRIVER_SELF_SPECS ""
993 /* Linking to libgomp implies pthreads. This is particularly important
994 for targets that use different start files and suchlike. */
995 #ifndef GOMP_SELF_SPECS
996 #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}"
999 /* Likewise for -fgnu-tm. */
1000 #ifndef GTM_SELF_SPECS
1001 #define GTM_SELF_SPECS "%{fgnu-tm: -pthread}"
1004 /* Likewise for -fcilkplus. */
1005 #ifndef CILK_SELF_SPECS
1006 #define CILK_SELF_SPECS "%{fcilkplus: -pthread}"
1009 static const char *const driver_self_specs
[] = {
1010 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
1011 DRIVER_SELF_SPECS
, CONFIGURE_SPECS
, GOMP_SELF_SPECS
, GTM_SELF_SPECS
,
1015 #ifndef OPTION_DEFAULT_SPECS
1016 #define OPTION_DEFAULT_SPECS { "", "" }
1025 static const struct default_spec
1026 option_default_specs
[] = { OPTION_DEFAULT_SPECS
};
1030 struct user_specs
*next
;
1031 const char *filename
;
1034 static struct user_specs
*user_specs_head
, *user_specs_tail
;
1037 /* Record the mapping from file suffixes for compilation specs. */
1041 const char *suffix
; /* Use this compiler for input files
1042 whose names end in this suffix. */
1044 const char *spec
; /* To use this compiler, run this spec. */
1046 const char *cpp_spec
; /* If non-NULL, substitute this spec
1047 for `%C', rather than the usual
1049 const int combinable
; /* If nonzero, compiler can deal with
1050 multiple source files at once (IMA). */
1051 const int needs_preprocessing
; /* If nonzero, source files need to
1052 be run through a preprocessor. */
1055 /* Pointer to a vector of `struct compiler' that gives the spec for
1056 compiling a file, based on its suffix.
1057 A file that does not end in any of these suffixes will be passed
1058 unchanged to the loader and nothing else will be done to it.
1060 An entry containing two 0s is used to terminate the vector.
1062 If multiple entries match a file, the last matching one is used. */
1064 static struct compiler
*compilers
;
1066 /* Number of entries in `compilers', not counting the null terminator. */
1068 static int n_compilers
;
1070 /* The default list of file name suffixes and their compilation specs. */
1072 static const struct compiler default_compilers
[] =
1074 /* Add lists of suffixes of known languages here. If those languages
1075 were not present when we built the driver, we will hit these copies
1076 and be given a more meaningful error than "file not used since
1077 linking is not done". */
1078 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
1079 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
1080 {".mii", "#Objective-C++", 0, 0, 0},
1081 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
1082 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
1083 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
1084 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
1085 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
1086 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
1087 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
1088 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
1089 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
1090 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
1091 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
1092 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
1093 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
1094 {".r", "#Ratfor", 0, 0, 0},
1095 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
1096 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
1097 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
1098 {".go", "#Go", 0, 1, 0},
1099 /* Next come the entries for C. */
1100 {".c", "@c", 0, 0, 1},
1102 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1103 external preprocessor if -save-temps is given. */
1104 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1107 %eGNU C no longer supports -traditional without -E}\
1108 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1109 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1110 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1112 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1113 cc1 %(cpp_unique_options) %(cc1_options)}}}\
1114 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
1116 "%{!E:%e-E or -x required when input is from standard input}\
1117 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
1118 {".h", "@c-header", 0, 0, 0},
1120 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1121 external preprocessor if -save-temps is given. */
1122 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1124 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1125 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1126 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1128 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
1129 %W{o*:--output-pch=%*}}%V}\
1130 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1131 cc1 %(cpp_unique_options) %(cc1_options)\
1132 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
1133 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
1134 {".i", "@cpp-output", 0, 0, 0},
1136 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
1137 {".s", "@assembler", 0, 0, 0},
1139 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
1140 {".sx", "@assembler-with-cpp", 0, 0, 0},
1141 {".S", "@assembler-with-cpp", 0, 0, 0},
1142 {"@assembler-with-cpp",
1143 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
1144 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1145 %{E|M|MM:%(cpp_debug_options)}\
1146 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1147 as %(asm_debug) %(asm_options) %|.s %A }}}}"
1149 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1150 %{E|M|MM:%(cpp_debug_options)}\
1151 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1152 as %(asm_debug) %(asm_options) %m.s %A }}}}"
1155 {".upc", "@upc", 0, 0, 0},
1157 /* Same as "@c" above, with the addition of %(upc_options). */
1158 "%{E|M|MM:cc1 -E %(upc_options) %(cpp_options) %(cpp_debug_options)}\
1160 %{traditional|ftraditional|traditional-cpp:\
1161 %e UPC does not support traditional compilation}\
1162 %{save-temps|no-integrated-cpp:\
1163 cc1 -E %(upc_options) %(cpp_options)\
1164 %{save-temps:%b.mi} %{!save-temps:%g.mi} \n\
1165 cc1 -fpreprocessed %{save-temps:%b.mi} %{!save-temps:%g.mi}\
1166 %(upc_options) %(cc1_options)}\
1167 %{!save-temps:%{!no-integrated-cpp:\
1168 cc1 %(cpp_unique_options) %(upc_options) %(cc1_options)}}\
1169 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
1172 /* Mark end of table. */
1176 /* Number of elements in default_compilers, not counting the terminator. */
1178 static const int n_default_compilers
= ARRAY_SIZE (default_compilers
) - 1;
1180 typedef char *char_p
; /* For DEF_VEC_P. */
1182 /* A vector of options to give to the linker.
1183 These options are accumulated by %x,
1184 and substituted into the linker command with %X. */
1185 static vec
<char_p
> linker_options
;
1187 /* A vector of options to give to the assembler.
1188 These options are accumulated by -Wa,
1189 and substituted into the assembler command with %Y. */
1190 static vec
<char_p
> assembler_options
;
1192 /* A vector of options to give to the preprocessor.
1193 These options are accumulated by -Wp,
1194 and substituted into the preprocessor command with %Z. */
1195 static vec
<char_p
> preprocessor_options
;
1198 skip_whitespace (char *p
)
1202 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1203 be considered whitespace. */
1204 if (p
[0] == '\n' && p
[1] == '\n' && p
[2] == '\n')
1206 else if (*p
== '\n' || *p
== ' ' || *p
== '\t')
1220 /* Structures to keep track of prefixes to try when looking for files. */
1224 const char *prefix
; /* String to prepend to the path. */
1225 struct prefix_list
*next
; /* Next in linked list. */
1226 int require_machine_suffix
; /* Don't use without machine_suffix. */
1227 /* 2 means try both machine_suffix and just_machine_suffix. */
1228 int priority
; /* Sort key - priority within list. */
1229 int os_multilib
; /* 1 if OS multilib scheme should be used,
1230 0 for GCC multilib scheme. */
1235 struct prefix_list
*plist
; /* List of prefixes to try */
1236 int max_len
; /* Max length of a prefix in PLIST */
1237 const char *name
; /* Name of this list (used in config stuff) */
1240 /* List of prefixes to try when looking for executables. */
1242 static struct path_prefix exec_prefixes
= { 0, 0, "exec" };
1244 /* List of prefixes to try when looking for startup (crt0) files. */
1246 static struct path_prefix startfile_prefixes
= { 0, 0, "startfile" };
1248 /* List of prefixes to try when looking for include files. */
1250 static struct path_prefix include_prefixes
= { 0, 0, "include" };
1252 /* Suffix to attach to directories searched for commands.
1253 This looks like `MACHINE/VERSION/'. */
1255 static const char *machine_suffix
= 0;
1257 /* Suffix to attach to directories searched for commands.
1258 This is just `MACHINE/'. */
1260 static const char *just_machine_suffix
= 0;
1262 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1264 static const char *gcc_exec_prefix
;
1266 /* Adjusted value of standard_libexec_prefix. */
1268 static const char *gcc_libexec_prefix
;
1270 /* Default prefixes to attach to command names. */
1272 #ifndef STANDARD_STARTFILE_PREFIX_1
1273 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1275 #ifndef STANDARD_STARTFILE_PREFIX_2
1276 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1279 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1280 #undef MD_EXEC_PREFIX
1281 #undef MD_STARTFILE_PREFIX
1282 #undef MD_STARTFILE_PREFIX_1
1285 /* If no prefixes defined, use the null string, which will disable them. */
1286 #ifndef MD_EXEC_PREFIX
1287 #define MD_EXEC_PREFIX ""
1289 #ifndef MD_STARTFILE_PREFIX
1290 #define MD_STARTFILE_PREFIX ""
1292 #ifndef MD_STARTFILE_PREFIX_1
1293 #define MD_STARTFILE_PREFIX_1 ""
1296 /* These directories are locations set at configure-time based on the
1297 --prefix option provided to configure. Their initializers are
1298 defined in Makefile.in. These paths are not *directly* used when
1299 gcc_exec_prefix is set because, in that case, we know where the
1300 compiler has been installed, and use paths relative to that
1301 location instead. */
1302 static const char *const standard_exec_prefix
= STANDARD_EXEC_PREFIX
;
1303 static const char *const standard_libexec_prefix
= STANDARD_LIBEXEC_PREFIX
;
1304 static const char *const standard_bindir_prefix
= STANDARD_BINDIR_PREFIX
;
1305 static const char *const standard_startfile_prefix
= STANDARD_STARTFILE_PREFIX
;
1307 /* For native compilers, these are well-known paths containing
1308 components that may be provided by the system. For cross
1309 compilers, these paths are not used. */
1310 static const char *md_exec_prefix
= MD_EXEC_PREFIX
;
1311 static const char *md_startfile_prefix
= MD_STARTFILE_PREFIX
;
1312 static const char *md_startfile_prefix_1
= MD_STARTFILE_PREFIX_1
;
1313 static const char *const standard_startfile_prefix_1
1314 = STANDARD_STARTFILE_PREFIX_1
;
1315 static const char *const standard_startfile_prefix_2
1316 = STANDARD_STARTFILE_PREFIX_2
;
1318 /* A relative path to be used in finding the location of tools
1319 relative to the driver. */
1320 static const char *const tooldir_base_prefix
= TOOLDIR_BASE_PREFIX
;
1322 /* Subdirectory to use for locating libraries. Set by
1323 set_multilib_dir based on the compilation options. */
1325 static const char *multilib_dir
;
1327 /* Subdirectory to use for locating libraries in OS conventions. Set by
1328 set_multilib_dir based on the compilation options. */
1330 static const char *multilib_os_dir
;
1332 /* Subdirectory to use for locating libraries in multiarch conventions. Set by
1333 set_multilib_dir based on the compilation options. */
1335 static const char *multiarch_dir
;
1337 /* Structure to keep track of the specs that have been defined so far.
1338 These are accessed using %(specname) in a compiler or link
1343 /* The following 2 fields must be first */
1344 /* to allow EXTRA_SPECS to be initialized */
1345 const char *name
; /* name of the spec. */
1346 const char *ptr
; /* available ptr if no static pointer */
1348 /* The following fields are not initialized */
1349 /* by EXTRA_SPECS */
1350 const char **ptr_spec
; /* pointer to the spec itself. */
1351 struct spec_list
*next
; /* Next spec in linked list. */
1352 int name_len
; /* length of the name */
1353 bool user_p
; /* whether string come from file spec. */
1354 bool alloc_p
; /* whether string was allocated */
1357 #define INIT_STATIC_SPEC(NAME,PTR) \
1358 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, false, false }
1360 /* List of statically defined specs. */
1361 static struct spec_list static_specs
[] =
1363 INIT_STATIC_SPEC ("asm", &asm_spec
),
1364 INIT_STATIC_SPEC ("asm_debug", &asm_debug
),
1365 INIT_STATIC_SPEC ("asm_final", &asm_final_spec
),
1366 INIT_STATIC_SPEC ("asm_options", &asm_options
),
1367 INIT_STATIC_SPEC ("invoke_as", &invoke_as
),
1368 INIT_STATIC_SPEC ("cpp", &cpp_spec
),
1369 INIT_STATIC_SPEC ("cpp_options", &cpp_options
),
1370 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options
),
1371 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options
),
1372 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp
),
1373 INIT_STATIC_SPEC ("cc1", &cc1_spec
),
1374 INIT_STATIC_SPEC ("cc1_options", &cc1_options
),
1375 INIT_STATIC_SPEC ("upc_options", &upc_options
),
1376 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec
),
1377 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec
),
1378 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec
),
1379 INIT_STATIC_SPEC ("endfile", &endfile_spec
),
1380 INIT_STATIC_SPEC ("link", &link_spec
),
1381 INIT_STATIC_SPEC ("lib", &lib_spec
),
1382 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec
),
1383 INIT_STATIC_SPEC ("upc_crtbegin", &upc_crtbegin_spec
),
1384 INIT_STATIC_SPEC ("link_upc", &link_upc_spec
),
1385 INIT_STATIC_SPEC ("upc_crtend", &upc_crtend_spec
),
1386 INIT_STATIC_SPEC ("libgcc", &libgcc_spec
),
1387 INIT_STATIC_SPEC ("startfile", &startfile_spec
),
1388 INIT_STATIC_SPEC ("cross_compile", &cross_compile
),
1389 INIT_STATIC_SPEC ("version", &compiler_version
),
1390 INIT_STATIC_SPEC ("multilib", &multilib_select
),
1391 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults
),
1392 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra
),
1393 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches
),
1394 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions
),
1395 INIT_STATIC_SPEC ("multilib_options", &multilib_options
),
1396 INIT_STATIC_SPEC ("multilib_reuse", &multilib_reuse
),
1397 INIT_STATIC_SPEC ("linker", &linker_name_spec
),
1398 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec
),
1399 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec
),
1400 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec
),
1401 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec
),
1402 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix
),
1403 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix
),
1404 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1
),
1405 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec
),
1406 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec
),
1407 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec
),
1408 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec
),
1409 INIT_STATIC_SPEC ("self_spec", &self_spec
),
1412 #ifdef EXTRA_SPECS /* additional specs needed */
1413 /* Structure to keep track of just the first two args of a spec_list.
1414 That is all that the EXTRA_SPECS macro gives us. */
1417 const char *const name
;
1418 const char *const ptr
;
1421 static const struct spec_list_1 extra_specs_1
[] = { EXTRA_SPECS
};
1422 static struct spec_list
*extra_specs
= (struct spec_list
*) 0;
1425 /* List of dynamically allocates specs that have been defined so far. */
1427 static struct spec_list
*specs
= (struct spec_list
*) 0;
1429 /* List of static spec functions. */
1431 static const struct spec_function static_spec_functions
[] =
1433 { "getenv", getenv_spec_function
},
1434 { "if-exists", if_exists_spec_function
},
1435 { "if-exists-else", if_exists_else_spec_function
},
1436 { "sanitize", sanitize_spec_function
},
1437 { "replace-outfile", replace_outfile_spec_function
},
1438 { "remove-outfile", remove_outfile_spec_function
},
1439 { "version-compare", version_compare_spec_function
},
1440 { "include", include_spec_function
},
1441 { "find-file", find_file_spec_function
},
1442 { "find-plugindir", find_plugindir_spec_function
},
1443 { "print-asm-header", print_asm_header_spec_function
},
1444 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function
},
1445 { "compare-debug-self-opt", compare_debug_self_opt_spec_function
},
1446 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function
},
1447 { "pass-through-libs", pass_through_libs_spec_func
},
1448 { "replace-extension", replace_extension_spec_func
},
1449 #ifdef EXTRA_SPEC_FUNCTIONS
1450 EXTRA_SPEC_FUNCTIONS
1455 static int processing_spec_function
;
1457 /* Add appropriate libgcc specs to OBSTACK, taking into account
1458 various permutations of -shared-libgcc, -shared, and such. */
1460 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1462 #ifndef USE_LD_AS_NEEDED
1463 #define USE_LD_AS_NEEDED 0
1467 init_gcc_specs (struct obstack
*obstack
, const char *shared_name
,
1468 const char *static_name
, const char *eh_name
)
1472 buf
= concat ("%{static|static-libgcc:", static_name
, " ", eh_name
, "}"
1473 "%{!static:%{!static-libgcc:"
1474 #if USE_LD_AS_NEEDED
1475 "%{!shared-libgcc:",
1476 static_name
, " " LD_AS_NEEDED_OPTION
" ",
1477 shared_name
, " " LD_NO_AS_NEEDED_OPTION
1480 shared_name
, "%{!shared: ", static_name
, "}"
1484 "%{!shared-libgcc:", static_name
, " ", eh_name
, "}"
1485 "%{shared-libgcc:", shared_name
, " ", static_name
, "}"
1489 "%{shared-libgcc:", shared_name
, "}"
1490 "%{!shared-libgcc:", static_name
, "}"
1493 "%{shared:", shared_name
, "}"
1498 obstack_grow (obstack
, buf
, strlen (buf
));
1501 #endif /* ENABLE_SHARED_LIBGCC */
1503 /* Initialize the specs lookup routines. */
1508 struct spec_list
*next
= (struct spec_list
*) 0;
1509 struct spec_list
*sl
= (struct spec_list
*) 0;
1513 return; /* Already initialized. */
1516 fnotice (stderr
, "Using built-in specs.\n");
1519 extra_specs
= XCNEWVEC (struct spec_list
, ARRAY_SIZE (extra_specs_1
));
1521 for (i
= ARRAY_SIZE (extra_specs_1
) - 1; i
>= 0; i
--)
1523 sl
= &extra_specs
[i
];
1524 sl
->name
= extra_specs_1
[i
].name
;
1525 sl
->ptr
= extra_specs_1
[i
].ptr
;
1527 sl
->name_len
= strlen (sl
->name
);
1528 sl
->ptr_spec
= &sl
->ptr
;
1533 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1535 sl
= &static_specs
[i
];
1540 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1541 /* ??? If neither -shared-libgcc nor --static-libgcc was
1542 seen, then we should be making an educated guess. Some proposed
1543 heuristics for ELF include:
1545 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1546 program will be doing dynamic loading, which will likely
1547 need the shared libgcc.
1549 (2) If "-ldl", then it's also a fair bet that we're doing
1552 (3) For each ET_DYN we're linking against (either through -lfoo
1553 or /some/path/foo.so), check to see whether it or one of
1554 its dependencies depends on a shared libgcc.
1558 If the runtime is fixed to look for program headers instead
1559 of calling __register_frame_info at all, for each object,
1560 use the shared libgcc if any EH symbol referenced.
1562 If crtstuff is fixed to not invoke __register_frame_info
1563 automatically, for each object, use the shared libgcc if
1564 any non-empty unwind section found.
1566 Doing any of this probably requires invoking an external program to
1567 do the actual object file scanning. */
1569 const char *p
= libgcc_spec
;
1572 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1573 when given the proper command line arguments. */
1576 if (in_sep
&& *p
== '-' && strncmp (p
, "-lgcc", 5) == 0)
1578 init_gcc_specs (&obstack
,
1580 #ifdef USE_LIBUNWIND_EXCEPTIONS
1586 #ifdef USE_LIBUNWIND_EXCEPTIONS
1587 # ifdef HAVE_LD_STATIC_DYNAMIC
1588 " %{!static:" LD_STATIC_OPTION
"} -lunwind"
1589 " %{!static:" LD_DYNAMIC_OPTION
"}"
1599 else if (in_sep
&& *p
== 'l' && strncmp (p
, "libgcc.a%s", 10) == 0)
1601 /* Ug. We don't know shared library extensions. Hope that
1602 systems that use this form don't do shared libraries. */
1603 init_gcc_specs (&obstack
,
1607 #ifdef USE_LIBUNWIND_EXCEPTIONS
1616 obstack_1grow (&obstack
, *p
);
1617 in_sep
= (*p
== ' ');
1622 obstack_1grow (&obstack
, '\0');
1623 libgcc_spec
= XOBFINISH (&obstack
, const char *);
1626 #ifdef USE_AS_TRADITIONAL_FORMAT
1627 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1629 static const char tf
[] = "--traditional-format ";
1630 obstack_grow (&obstack
, tf
, sizeof (tf
) - 1);
1631 obstack_grow0 (&obstack
, asm_spec
, strlen (asm_spec
));
1632 asm_spec
= XOBFINISH (&obstack
, const char *);
1636 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \
1637 defined LINKER_HASH_STYLE
1638 # ifdef LINK_BUILDID_SPEC
1639 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1640 obstack_grow (&obstack
, LINK_BUILDID_SPEC
, sizeof (LINK_BUILDID_SPEC
) - 1);
1642 # ifdef LINK_EH_SPEC
1643 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1644 obstack_grow (&obstack
, LINK_EH_SPEC
, sizeof (LINK_EH_SPEC
) - 1);
1646 # ifdef LINKER_HASH_STYLE
1647 /* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had
1650 static const char hash_style
[] = "--hash-style=";
1651 obstack_grow (&obstack
, hash_style
, sizeof (hash_style
) - 1);
1652 obstack_grow (&obstack
, LINKER_HASH_STYLE
, sizeof (LINKER_HASH_STYLE
) - 1);
1653 obstack_1grow (&obstack
, ' ');
1656 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
1657 link_spec
= XOBFINISH (&obstack
, const char *);
1663 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1664 removed; If the spec starts with a + then SPEC is added to the end of the
1668 set_spec (const char *name
, const char *spec
, bool user_p
)
1670 struct spec_list
*sl
;
1671 const char *old_spec
;
1672 int name_len
= strlen (name
);
1675 /* If this is the first call, initialize the statically allocated specs. */
1678 struct spec_list
*next
= (struct spec_list
*) 0;
1679 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1681 sl
= &static_specs
[i
];
1688 /* See if the spec already exists. */
1689 for (sl
= specs
; sl
; sl
= sl
->next
)
1690 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, name
))
1695 /* Not found - make it. */
1696 sl
= XNEW (struct spec_list
);
1697 sl
->name
= xstrdup (name
);
1698 sl
->name_len
= name_len
;
1699 sl
->ptr_spec
= &sl
->ptr
;
1701 *(sl
->ptr_spec
) = "";
1706 old_spec
= *(sl
->ptr_spec
);
1707 *(sl
->ptr_spec
) = ((spec
[0] == '+' && ISSPACE ((unsigned char)spec
[1]))
1708 ? concat (old_spec
, spec
+ 1, NULL
)
1713 fnotice (stderr
, "Setting spec %s to '%s'\n\n", name
, *(sl
->ptr_spec
));
1716 /* Free the old spec. */
1717 if (old_spec
&& sl
->alloc_p
)
1718 free (CONST_CAST (char *, old_spec
));
1720 sl
->user_p
= user_p
;
1724 /* Accumulate a command (program name and args), and run it. */
1726 typedef const char *const_char_p
; /* For DEF_VEC_P. */
1728 /* Vector of pointers to arguments in the current line of specifications. */
1730 static vec
<const_char_p
> argbuf
;
1732 /* Position in the argbuf vector containing the name of the output file
1733 (the value associated with the "-o" flag). */
1735 static int have_o_argbuf_index
= 0;
1737 /* Were the options -c, -S or -E passed. */
1738 static int have_c
= 0;
1740 /* Was the option -o passed. */
1741 static int have_o
= 0;
1743 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1744 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1747 static struct temp_name
{
1748 const char *suffix
; /* suffix associated with the code. */
1749 int length
; /* strlen (suffix). */
1750 int unique
; /* Indicates whether %g or %u/%U was used. */
1751 const char *filename
; /* associated filename. */
1752 int filename_length
; /* strlen (filename). */
1753 struct temp_name
*next
;
1756 /* Number of commands executed so far. */
1758 static int execution_count
;
1760 /* Number of commands that exited with a signal. */
1762 static int signal_count
;
1764 /* Allocate the argument vector. */
1772 /* Clear out the vector of arguments (after a command is executed). */
1777 argbuf
.truncate (0);
1780 /* Add one argument to the vector at the end.
1781 This is done when a space is seen or at the end of the line.
1782 If DELETE_ALWAYS is nonzero, the arg is a filename
1783 and the file should be deleted eventually.
1784 If DELETE_FAILURE is nonzero, the arg is a filename
1785 and the file should be deleted if this compilation fails. */
1788 store_arg (const char *arg
, int delete_always
, int delete_failure
)
1790 argbuf
.safe_push (arg
);
1792 if (strcmp (arg
, "-o") == 0)
1793 have_o_argbuf_index
= argbuf
.length ();
1794 if (delete_always
|| delete_failure
)
1797 /* If the temporary file we should delete is specified as
1798 part of a joined argument extract the filename. */
1800 && (p
= strrchr (arg
, '=')))
1802 record_temp_file (arg
, delete_always
, delete_failure
);
1806 /* Load specs from a file name named FILENAME, replacing occurrences of
1807 various different types of line-endings, \r\n, \n\r and just \r, with
1811 load_specs (const char *filename
)
1815 struct stat statbuf
;
1822 fnotice (stderr
, "Reading specs from %s\n", filename
);
1824 /* Open and stat the file. */
1825 desc
= open (filename
, O_RDONLY
, 0);
1827 pfatal_with_name (filename
);
1828 if (stat (filename
, &statbuf
) < 0)
1829 pfatal_with_name (filename
);
1831 /* Read contents of file into BUFFER. */
1832 buffer
= XNEWVEC (char, statbuf
.st_size
+ 1);
1833 readlen
= read (desc
, buffer
, (unsigned) statbuf
.st_size
);
1835 pfatal_with_name (filename
);
1836 buffer
[readlen
] = 0;
1839 specs
= XNEWVEC (char, readlen
+ 1);
1841 for (buffer_p
= buffer
; buffer_p
&& *buffer_p
; buffer_p
++)
1847 if (buffer_p
> buffer
&& *(buffer_p
- 1) == '\n') /* \n\r */
1849 else if (*(buffer_p
+ 1) == '\n') /* \r\n */
1863 /* Read compilation specs from a file named FILENAME,
1864 replacing the default ones.
1866 A suffix which starts with `*' is a definition for
1867 one of the machine-specific sub-specs. The "suffix" should be
1868 *asm, *cc1, *cpp, *link, *startfile, etc.
1869 The corresponding spec is stored in asm_spec, etc.,
1870 rather than in the `compilers' vector.
1872 Anything invalid in the file is a fatal error. */
1875 read_specs (const char *filename
, bool main_p
, bool user_p
)
1880 buffer
= load_specs (filename
);
1882 /* Scan BUFFER for specs, putting them in the vector. */
1888 char *in
, *out
, *p1
, *p2
, *p3
;
1890 /* Advance P in BUFFER to the next nonblank nocomment line. */
1891 p
= skip_whitespace (p
);
1895 /* Is this a special command that starts with '%'? */
1896 /* Don't allow this for the main specs file, since it would
1897 encourage people to overwrite it. */
1898 if (*p
== '%' && !main_p
)
1901 while (*p
&& *p
!= '\n')
1907 if (!strncmp (p1
, "%include", sizeof ("%include") - 1)
1908 && (p1
[sizeof "%include" - 1] == ' '
1909 || p1
[sizeof "%include" - 1] == '\t'))
1913 p1
+= sizeof ("%include");
1914 while (*p1
== ' ' || *p1
== '\t')
1917 if (*p1
++ != '<' || p
[-2] != '>')
1918 fatal_error ("specs %%include syntax malformed after "
1920 (long) (p1
- buffer
+ 1));
1923 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1924 read_specs (new_filename
? new_filename
: p1
, false, user_p
);
1927 else if (!strncmp (p1
, "%include_noerr", sizeof "%include_noerr" - 1)
1928 && (p1
[sizeof "%include_noerr" - 1] == ' '
1929 || p1
[sizeof "%include_noerr" - 1] == '\t'))
1933 p1
+= sizeof "%include_noerr";
1934 while (*p1
== ' ' || *p1
== '\t')
1937 if (*p1
++ != '<' || p
[-2] != '>')
1938 fatal_error ("specs %%include syntax malformed after "
1940 (long) (p1
- buffer
+ 1));
1943 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1945 read_specs (new_filename
, false, user_p
);
1946 else if (verbose_flag
)
1947 fnotice (stderr
, "could not find specs file %s\n", p1
);
1950 else if (!strncmp (p1
, "%rename", sizeof "%rename" - 1)
1951 && (p1
[sizeof "%rename" - 1] == ' '
1952 || p1
[sizeof "%rename" - 1] == '\t'))
1955 struct spec_list
*sl
;
1956 struct spec_list
*newsl
;
1958 /* Get original name. */
1959 p1
+= sizeof "%rename";
1960 while (*p1
== ' ' || *p1
== '\t')
1963 if (! ISALPHA ((unsigned char) *p1
))
1964 fatal_error ("specs %%rename syntax malformed after "
1966 (long) (p1
- buffer
));
1969 while (*p2
&& !ISSPACE ((unsigned char) *p2
))
1972 if (*p2
!= ' ' && *p2
!= '\t')
1973 fatal_error ("specs %%rename syntax malformed after "
1975 (long) (p2
- buffer
));
1979 while (*p2
== ' ' || *p2
== '\t')
1982 if (! ISALPHA ((unsigned char) *p2
))
1983 fatal_error ("specs %%rename syntax malformed after "
1985 (long) (p2
- buffer
));
1987 /* Get new spec name. */
1989 while (*p3
&& !ISSPACE ((unsigned char) *p3
))
1993 fatal_error ("specs %%rename syntax malformed after "
1995 (long) (p3
- buffer
));
1998 for (sl
= specs
; sl
; sl
= sl
->next
)
1999 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, p1
))
2003 fatal_error ("specs %s spec was not found to be renamed", p1
);
2005 if (strcmp (p1
, p2
) == 0)
2008 for (newsl
= specs
; newsl
; newsl
= newsl
->next
)
2009 if (strcmp (newsl
->name
, p2
) == 0)
2010 fatal_error ("%s: attempt to rename spec %qs to "
2011 "already defined spec %qs",
2016 fnotice (stderr
, "rename spec %s to %s\n", p1
, p2
);
2018 fnotice (stderr
, "spec is '%s'\n\n", *(sl
->ptr_spec
));
2022 set_spec (p2
, *(sl
->ptr_spec
), user_p
);
2024 free (CONST_CAST (char *, *(sl
->ptr_spec
)));
2026 *(sl
->ptr_spec
) = "";
2031 fatal_error ("specs unknown %% command after %ld characters",
2032 (long) (p1
- buffer
));
2035 /* Find the colon that should end the suffix. */
2037 while (*p1
&& *p1
!= ':' && *p1
!= '\n')
2040 /* The colon shouldn't be missing. */
2042 fatal_error ("specs file malformed after %ld characters",
2043 (long) (p1
- buffer
));
2045 /* Skip back over trailing whitespace. */
2047 while (p2
> buffer
&& (p2
[-1] == ' ' || p2
[-1] == '\t'))
2050 /* Copy the suffix to a string. */
2051 suffix
= save_string (p
, p2
- p
);
2052 /* Find the next line. */
2053 p
= skip_whitespace (p1
+ 1);
2055 fatal_error ("specs file malformed after %ld characters",
2056 (long) (p
- buffer
));
2059 /* Find next blank line or end of string. */
2060 while (*p1
&& !(*p1
== '\n' && (p1
[1] == '\n' || p1
[1] == '\0')))
2063 /* Specs end at the blank line and do not include the newline. */
2064 spec
= save_string (p
, p1
- p
);
2067 /* Delete backslash-newline sequences from the spec. */
2072 if (in
[0] == '\\' && in
[1] == '\n')
2074 else if (in
[0] == '#')
2075 while (*in
&& *in
!= '\n')
2083 if (suffix
[0] == '*')
2085 if (! strcmp (suffix
, "*link_command"))
2086 link_command_spec
= spec
;
2088 set_spec (suffix
+ 1, spec
, user_p
);
2092 /* Add this pair to the vector. */
2094 = XRESIZEVEC (struct compiler
, compilers
, n_compilers
+ 2);
2096 compilers
[n_compilers
].suffix
= suffix
;
2097 compilers
[n_compilers
].spec
= spec
;
2099 memset (&compilers
[n_compilers
], 0, sizeof compilers
[n_compilers
]);
2103 link_command_spec
= spec
;
2106 if (link_command_spec
== 0)
2107 fatal_error ("spec file has no spec for linking");
2110 /* Record the names of temporary files we tell compilers to write,
2111 and delete them at the end of the run. */
2113 /* This is the common prefix we use to make temp file names.
2114 It is chosen once for each run of this program.
2115 It is substituted into a spec by %g or %j.
2116 Thus, all temp file names contain this prefix.
2117 In practice, all temp file names start with this prefix.
2119 This prefix comes from the envvar TMPDIR if it is defined;
2120 otherwise, from the P_tmpdir macro if that is defined;
2121 otherwise, in /usr/tmp or /tmp;
2122 or finally the current directory if all else fails. */
2124 static const char *temp_filename
;
2126 /* Length of the prefix. */
2128 static int temp_filename_length
;
2130 /* Define the list of temporary files to delete. */
2135 struct temp_file
*next
;
2138 /* Queue of files to delete on success or failure of compilation. */
2139 static struct temp_file
*always_delete_queue
;
2140 /* Queue of files to delete on failure of compilation. */
2141 static struct temp_file
*failure_delete_queue
;
2143 /* Record FILENAME as a file to be deleted automatically.
2144 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2145 otherwise delete it in any case.
2146 FAIL_DELETE nonzero means delete it if a compilation step fails;
2147 otherwise delete it in any case. */
2150 record_temp_file (const char *filename
, int always_delete
, int fail_delete
)
2152 char *const name
= xstrdup (filename
);
2156 struct temp_file
*temp
;
2157 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
2158 if (! filename_cmp (name
, temp
->name
))
2161 temp
= XNEW (struct temp_file
);
2162 temp
->next
= always_delete_queue
;
2164 always_delete_queue
= temp
;
2171 struct temp_file
*temp
;
2172 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
2173 if (! filename_cmp (name
, temp
->name
))
2179 temp
= XNEW (struct temp_file
);
2180 temp
->next
= failure_delete_queue
;
2182 failure_delete_queue
= temp
;
2188 /* Delete all the temporary files whose names we previously recorded. */
2190 #ifndef DELETE_IF_ORDINARY
2191 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2194 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2195 if (unlink (NAME) < 0) \
2197 perror_with_name (NAME); \
2202 delete_if_ordinary (const char *name
)
2208 printf ("Delete %s? (y or n) ", name
);
2212 while ((c
= getchar ()) != '\n' && c
!= EOF
)
2215 if (i
== 'y' || i
== 'Y')
2217 DELETE_IF_ORDINARY (name
, st
, verbose_flag
);
2221 delete_temp_files (void)
2223 struct temp_file
*temp
;
2225 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
2226 delete_if_ordinary (temp
->name
);
2227 always_delete_queue
= 0;
2230 /* Delete all the files to be deleted on error. */
2233 delete_failure_queue (void)
2235 struct temp_file
*temp
;
2237 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
2238 delete_if_ordinary (temp
->name
);
2242 clear_failure_queue (void)
2244 failure_delete_queue
= 0;
2247 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2249 If DO_MULTI is true iterate over the paths twice, first with multilib
2250 suffix then without, otherwise iterate over the paths once without
2251 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2252 to avoid visiting the same path twice, but we could do better. For
2253 instance, /usr/lib/../lib is considered different from /usr/lib.
2254 At least EXTRA_SPACE chars past the end of the path passed to
2255 CALLBACK are available for use by the callback.
2256 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2258 Returns the value returned by CALLBACK. */
2261 for_each_path (const struct path_prefix
*paths
,
2264 void *(*callback
) (char *, void *),
2265 void *callback_info
)
2267 struct prefix_list
*pl
;
2268 const char *multi_dir
= NULL
;
2269 const char *multi_os_dir
= NULL
;
2270 const char *multiarch_suffix
= NULL
;
2271 const char *multi_suffix
;
2272 const char *just_multi_suffix
;
2275 bool skip_multi_dir
= false;
2276 bool skip_multi_os_dir
= false;
2278 multi_suffix
= machine_suffix
;
2279 just_multi_suffix
= just_machine_suffix
;
2280 if (do_multi
&& multilib_dir
&& strcmp (multilib_dir
, ".") != 0)
2282 multi_dir
= concat (multilib_dir
, dir_separator_str
, NULL
);
2283 multi_suffix
= concat (multi_suffix
, multi_dir
, NULL
);
2284 just_multi_suffix
= concat (just_multi_suffix
, multi_dir
, NULL
);
2286 if (do_multi
&& multilib_os_dir
&& strcmp (multilib_os_dir
, ".") != 0)
2287 multi_os_dir
= concat (multilib_os_dir
, dir_separator_str
, NULL
);
2289 multiarch_suffix
= concat (multiarch_dir
, dir_separator_str
, NULL
);
2293 size_t multi_dir_len
= 0;
2294 size_t multi_os_dir_len
= 0;
2295 size_t multiarch_len
= 0;
2297 size_t just_suffix_len
;
2301 multi_dir_len
= strlen (multi_dir
);
2303 multi_os_dir_len
= strlen (multi_os_dir
);
2304 if (multiarch_suffix
)
2305 multiarch_len
= strlen (multiarch_suffix
);
2306 suffix_len
= strlen (multi_suffix
);
2307 just_suffix_len
= strlen (just_multi_suffix
);
2311 len
= paths
->max_len
+ extra_space
+ 1;
2312 len
+= MAX (MAX (suffix_len
, multi_os_dir_len
), multiarch_len
);
2313 path
= XNEWVEC (char, len
);
2316 for (pl
= paths
->plist
; pl
!= 0; pl
= pl
->next
)
2318 len
= strlen (pl
->prefix
);
2319 memcpy (path
, pl
->prefix
, len
);
2321 /* Look first in MACHINE/VERSION subdirectory. */
2322 if (!skip_multi_dir
)
2324 memcpy (path
+ len
, multi_suffix
, suffix_len
+ 1);
2325 ret
= callback (path
, callback_info
);
2330 /* Some paths are tried with just the machine (ie. target)
2331 subdir. This is used for finding as, ld, etc. */
2333 && pl
->require_machine_suffix
== 2)
2335 memcpy (path
+ len
, just_multi_suffix
, just_suffix_len
+ 1);
2336 ret
= callback (path
, callback_info
);
2341 /* Now try the multiarch path. */
2343 && !pl
->require_machine_suffix
&& multiarch_dir
)
2345 memcpy (path
+ len
, multiarch_suffix
, multiarch_len
+ 1);
2346 ret
= callback (path
, callback_info
);
2351 /* Now try the base path. */
2352 if (!pl
->require_machine_suffix
2353 && !(pl
->os_multilib
? skip_multi_os_dir
: skip_multi_dir
))
2355 const char *this_multi
;
2356 size_t this_multi_len
;
2358 if (pl
->os_multilib
)
2360 this_multi
= multi_os_dir
;
2361 this_multi_len
= multi_os_dir_len
;
2365 this_multi
= multi_dir
;
2366 this_multi_len
= multi_dir_len
;
2370 memcpy (path
+ len
, this_multi
, this_multi_len
+ 1);
2374 ret
= callback (path
, callback_info
);
2382 if (multi_dir
== NULL
&& multi_os_dir
== NULL
)
2385 /* Run through the paths again, this time without multilibs.
2386 Don't repeat any we have already seen. */
2389 free (CONST_CAST (char *, multi_dir
));
2391 free (CONST_CAST (char *, multi_suffix
));
2392 multi_suffix
= machine_suffix
;
2393 free (CONST_CAST (char *, just_multi_suffix
));
2394 just_multi_suffix
= just_machine_suffix
;
2397 skip_multi_dir
= true;
2400 free (CONST_CAST (char *, multi_os_dir
));
2401 multi_os_dir
= NULL
;
2404 skip_multi_os_dir
= true;
2409 free (CONST_CAST (char *, multi_dir
));
2410 free (CONST_CAST (char *, multi_suffix
));
2411 free (CONST_CAST (char *, just_multi_suffix
));
2414 free (CONST_CAST (char *, multi_os_dir
));
2420 /* Callback for build_search_list. Adds path to obstack being built. */
2422 struct add_to_obstack_info
{
2429 add_to_obstack (char *path
, void *data
)
2431 struct add_to_obstack_info
*info
= (struct add_to_obstack_info
*) data
;
2433 if (info
->check_dir
&& !is_directory (path
, false))
2436 if (!info
->first_time
)
2437 obstack_1grow (info
->ob
, PATH_SEPARATOR
);
2439 obstack_grow (info
->ob
, path
, strlen (path
));
2441 info
->first_time
= false;
2445 /* Add or change the value of an environment variable, outputting the
2446 change to standard error if in verbose mode. */
2448 xputenv (const char *string
)
2451 fnotice (stderr
, "%s\n", string
);
2452 putenv (CONST_CAST (char *, string
));
2455 /* Build a list of search directories from PATHS.
2456 PREFIX is a string to prepend to the list.
2457 If CHECK_DIR_P is true we ensure the directory exists.
2458 If DO_MULTI is true, multilib paths are output first, then
2460 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2461 It is also used by the --print-search-dirs flag. */
2464 build_search_list (const struct path_prefix
*paths
, const char *prefix
,
2465 bool check_dir
, bool do_multi
)
2467 struct add_to_obstack_info info
;
2469 info
.ob
= &collect_obstack
;
2470 info
.check_dir
= check_dir
;
2471 info
.first_time
= true;
2473 obstack_grow (&collect_obstack
, prefix
, strlen (prefix
));
2474 obstack_1grow (&collect_obstack
, '=');
2476 for_each_path (paths
, do_multi
, 0, add_to_obstack
, &info
);
2478 obstack_1grow (&collect_obstack
, '\0');
2479 return XOBFINISH (&collect_obstack
, char *);
2482 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2486 putenv_from_prefixes (const struct path_prefix
*paths
, const char *env_var
,
2489 xputenv (build_search_list (paths
, env_var
, true, do_multi
));
2492 /* Check whether NAME can be accessed in MODE. This is like access,
2493 except that it never considers directories to be executable. */
2496 access_check (const char *name
, int mode
)
2502 if (stat (name
, &st
) < 0
2503 || S_ISDIR (st
.st_mode
))
2507 return access (name
, mode
);
2510 /* Callback for find_a_file. Appends the file name to the directory
2511 path. If the resulting file exists in the right mode, return the
2512 full pathname to the file. */
2514 struct file_at_path_info
{
2523 file_at_path (char *path
, void *data
)
2525 struct file_at_path_info
*info
= (struct file_at_path_info
*) data
;
2526 size_t len
= strlen (path
);
2528 memcpy (path
+ len
, info
->name
, info
->name_len
);
2529 len
+= info
->name_len
;
2531 /* Some systems have a suffix for executable files.
2532 So try appending that first. */
2533 if (info
->suffix_len
)
2535 memcpy (path
+ len
, info
->suffix
, info
->suffix_len
+ 1);
2536 if (access_check (path
, info
->mode
) == 0)
2541 if (access_check (path
, info
->mode
) == 0)
2547 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2548 access to check permissions. If DO_MULTI is true, search multilib
2549 paths then non-multilib paths, otherwise do not search multilib paths.
2550 Return 0 if not found, otherwise return its name, allocated with malloc. */
2553 find_a_file (const struct path_prefix
*pprefix
, const char *name
, int mode
,
2556 struct file_at_path_info info
;
2558 #ifdef DEFAULT_ASSEMBLER
2559 if (! strcmp (name
, "as") && access (DEFAULT_ASSEMBLER
, mode
) == 0)
2560 return xstrdup (DEFAULT_ASSEMBLER
);
2563 #ifdef DEFAULT_LINKER
2564 if (! strcmp (name
, "ld") && access (DEFAULT_LINKER
, mode
) == 0)
2565 return xstrdup (DEFAULT_LINKER
);
2568 /* Determine the filename to execute (special case for absolute paths). */
2570 if (IS_ABSOLUTE_PATH (name
))
2572 if (access (name
, mode
) == 0)
2573 return xstrdup (name
);
2579 info
.suffix
= (mode
& X_OK
) != 0 ? HOST_EXECUTABLE_SUFFIX
: "";
2580 info
.name_len
= strlen (info
.name
);
2581 info
.suffix_len
= strlen (info
.suffix
);
2584 return (char*) for_each_path (pprefix
, do_multi
,
2585 info
.name_len
+ info
.suffix_len
,
2586 file_at_path
, &info
);
2589 /* Ranking of prefixes in the sort list. -B prefixes are put before
2592 enum path_prefix_priority
2594 PREFIX_PRIORITY_B_OPT
,
2595 PREFIX_PRIORITY_LAST
2598 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2599 order according to PRIORITY. Within each PRIORITY, new entries are
2602 If WARN is nonzero, we will warn if no file is found
2603 through this prefix. WARN should point to an int
2604 which will be set to 1 if this entry is used.
2606 COMPONENT is the value to be passed to update_path.
2608 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2609 the complete value of machine_suffix.
2610 2 means try both machine_suffix and just_machine_suffix. */
2613 add_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2614 const char *component
, /* enum prefix_priority */ int priority
,
2615 int require_machine_suffix
, int os_multilib
)
2617 struct prefix_list
*pl
, **prev
;
2620 for (prev
= &pprefix
->plist
;
2621 (*prev
) != NULL
&& (*prev
)->priority
<= priority
;
2622 prev
= &(*prev
)->next
)
2625 /* Keep track of the longest prefix. */
2627 prefix
= update_path (prefix
, component
);
2628 len
= strlen (prefix
);
2629 if (len
> pprefix
->max_len
)
2630 pprefix
->max_len
= len
;
2632 pl
= XNEW (struct prefix_list
);
2633 pl
->prefix
= prefix
;
2634 pl
->require_machine_suffix
= require_machine_suffix
;
2635 pl
->priority
= priority
;
2636 pl
->os_multilib
= os_multilib
;
2638 /* Insert after PREV. */
2643 /* Same as add_prefix, but prepending target_system_root to prefix. */
2644 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2646 add_sysrooted_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2647 const char *component
,
2648 /* enum prefix_priority */ int priority
,
2649 int require_machine_suffix
, int os_multilib
)
2651 if (!IS_ABSOLUTE_PATH (prefix
))
2652 fatal_error ("system path %qs is not absolute", prefix
);
2654 if (target_system_root
)
2656 char *sysroot_no_trailing_dir_separator
= xstrdup (target_system_root
);
2657 size_t sysroot_len
= strlen (target_system_root
);
2660 && target_system_root
[sysroot_len
- 1] == DIR_SEPARATOR
)
2661 sysroot_no_trailing_dir_separator
[sysroot_len
- 1] = '\0';
2663 if (target_sysroot_suffix
)
2664 prefix
= concat (sysroot_no_trailing_dir_separator
,
2665 target_sysroot_suffix
, prefix
, NULL
);
2667 prefix
= concat (sysroot_no_trailing_dir_separator
, prefix
, NULL
);
2669 free (sysroot_no_trailing_dir_separator
);
2671 /* We have to override this because GCC's notion of sysroot
2672 moves along with GCC. */
2676 add_prefix (pprefix
, prefix
, component
, priority
,
2677 require_machine_suffix
, os_multilib
);
2680 /* Execute the command specified by the arguments on the current line of spec.
2681 When using pipes, this includes several piped-together commands
2682 with `|' between them.
2684 Return 0 if successful, -1 if failed. */
2690 int n_commands
; /* # of command. */
2692 struct pex_obj
*pex
;
2695 const char *prog
; /* program name. */
2696 const char **argv
; /* vector of args. */
2700 struct command
*commands
; /* each command buffer with above info. */
2702 gcc_assert (!processing_spec_function
);
2706 string
= find_a_file (&exec_prefixes
,
2707 argbuf
[0], X_OK
, false);
2710 insert_wrapper (wrapper_string
);
2713 /* Count # of piped commands. */
2714 for (n_commands
= 1, i
= 0; argbuf
.iterate (i
, &arg
); i
++)
2715 if (strcmp (arg
, "|") == 0)
2718 /* Get storage for each command. */
2719 commands
= (struct command
*) alloca (n_commands
* sizeof (struct command
));
2721 /* Split argbuf into its separate piped processes,
2722 and record info about each one.
2723 Also search for the programs that are to be run. */
2725 argbuf
.safe_push (0);
2727 commands
[0].prog
= argbuf
[0]; /* first command. */
2728 commands
[0].argv
= argbuf
.address ();
2730 if (!wrapper_string
)
2732 string
= find_a_file (&exec_prefixes
, commands
[0].prog
, X_OK
, false);
2733 commands
[0].argv
[0] = (string
) ? string
: commands
[0].argv
[0];
2736 for (n_commands
= 1, i
= 0; argbuf
.iterate (i
, &arg
); i
++)
2737 if (arg
&& strcmp (arg
, "|") == 0)
2738 { /* each command. */
2739 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2740 fatal_error ("-pipe not supported");
2742 argbuf
[i
] = 0; /* Termination of
2744 commands
[n_commands
].prog
= argbuf
[i
+ 1];
2745 commands
[n_commands
].argv
2746 = &(argbuf
.address ())[i
+ 1];
2747 string
= find_a_file (&exec_prefixes
, commands
[n_commands
].prog
,
2750 commands
[n_commands
].argv
[0] = string
;
2754 /* If -v, print what we are about to do, and maybe query. */
2758 /* For help listings, put a blank line between sub-processes. */
2759 if (print_help_list
)
2760 fputc ('\n', stderr
);
2762 /* Print each piped command as a separate line. */
2763 for (i
= 0; i
< n_commands
; i
++)
2765 const char *const *j
;
2767 if (verbose_only_flag
)
2769 for (j
= commands
[i
].argv
; *j
; j
++)
2772 for (p
= *j
; *p
; ++p
)
2773 if (!ISALNUM ((unsigned char) *p
)
2774 && *p
!= '_' && *p
!= '/' && *p
!= '-' && *p
!= '.')
2778 fprintf (stderr
, " \"");
2779 for (p
= *j
; *p
; ++p
)
2781 if (*p
== '"' || *p
== '\\' || *p
== '$')
2782 fputc ('\\', stderr
);
2785 fputc ('"', stderr
);
2787 /* If it's empty, print "". */
2789 fprintf (stderr
, " \"\"");
2791 fprintf (stderr
, " %s", *j
);
2795 for (j
= commands
[i
].argv
; *j
; j
++)
2796 /* If it's empty, print "". */
2798 fprintf (stderr
, " \"\"");
2800 fprintf (stderr
, " %s", *j
);
2802 /* Print a pipe symbol after all but the last command. */
2803 if (i
+ 1 != n_commands
)
2804 fprintf (stderr
, " |");
2805 fprintf (stderr
, "\n");
2808 if (verbose_only_flag
!= 0)
2810 /* verbose_only_flag should act as if the spec was
2811 executed, so increment execution_count before
2812 returning. This prevents spurious warnings about
2813 unused linker input files, etc. */
2818 fnotice (stderr
, "\nGo ahead? (y or n) ");
2822 while (getchar () != '\n')
2825 if (i
!= 'y' && i
!= 'Y')
2830 #ifdef ENABLE_VALGRIND_CHECKING
2831 /* Run the each command through valgrind. To simplify prepending the
2832 path to valgrind and the option "-q" (for quiet operation unless
2833 something triggers), we allocate a separate argv array. */
2835 for (i
= 0; i
< n_commands
; i
++)
2841 for (argc
= 0; commands
[i
].argv
[argc
] != NULL
; argc
++)
2844 argv
= XALLOCAVEC (const char *, argc
+ 3);
2846 argv
[0] = VALGRIND_PATH
;
2848 for (j
= 2; j
< argc
+ 2; j
++)
2849 argv
[j
] = commands
[i
].argv
[j
- 2];
2852 commands
[i
].argv
= argv
;
2853 commands
[i
].prog
= argv
[0];
2857 /* Run each piped subprocess. */
2859 pex
= pex_init (PEX_USE_PIPES
| ((report_times
|| report_times_to_file
)
2860 ? PEX_RECORD_TIMES
: 0),
2861 progname
, temp_filename
);
2863 fatal_error ("pex_init failed: %m");
2865 for (i
= 0; i
< n_commands
; i
++)
2869 const char *string
= commands
[i
].argv
[0];
2871 errmsg
= pex_run (pex
,
2872 ((i
+ 1 == n_commands
? PEX_LAST
: 0)
2873 | (string
== commands
[i
].prog
? PEX_SEARCH
: 0)),
2874 string
, CONST_CAST (char **, commands
[i
].argv
),
2879 fatal_error (errmsg
);
2883 pfatal_with_name (errmsg
);
2887 if (string
!= commands
[i
].prog
)
2888 free (CONST_CAST (char *, string
));
2893 /* Wait for all the subprocesses to finish. */
2897 struct pex_time
*times
= NULL
;
2900 statuses
= (int *) alloca (n_commands
* sizeof (int));
2901 if (!pex_get_status (pex
, n_commands
, statuses
))
2902 fatal_error ("failed to get exit status: %m");
2904 if (report_times
|| report_times_to_file
)
2906 times
= (struct pex_time
*) alloca (n_commands
* sizeof (struct pex_time
));
2907 if (!pex_get_times (pex
, n_commands
, times
))
2908 fatal_error ("failed to get process times: %m");
2913 for (i
= 0; i
< n_commands
; ++i
)
2915 int status
= statuses
[i
];
2917 if (WIFSIGNALED (status
))
2920 /* SIGPIPE is a special case. It happens in -pipe mode
2921 when the compiler dies before the preprocessor is done,
2922 or the assembler dies before the compiler is done.
2923 There's generally been an error already, and this is
2924 just fallout. So don't generate another error unless
2925 we would otherwise have succeeded. */
2926 if (WTERMSIG (status
) == SIGPIPE
2927 && (signal_count
|| greatest_status
>= MIN_FATAL_STATUS
))
2934 internal_error ("%s (program %s)",
2935 strsignal (WTERMSIG (status
)), commands
[i
].prog
);
2937 else if (WIFEXITED (status
)
2938 && WEXITSTATUS (status
) >= MIN_FATAL_STATUS
)
2940 if (WEXITSTATUS (status
) > greatest_status
)
2941 greatest_status
= WEXITSTATUS (status
);
2945 if (report_times
|| report_times_to_file
)
2947 struct pex_time
*pt
= ×
[i
];
2950 ut
= ((double) pt
->user_seconds
2951 + (double) pt
->user_microseconds
/ 1.0e6
);
2952 st
= ((double) pt
->system_seconds
2953 + (double) pt
->system_microseconds
/ 1.0e6
);
2958 fnotice (stderr
, "# %s %.2f %.2f\n",
2959 commands
[i
].prog
, ut
, st
);
2961 if (report_times_to_file
)
2964 const char *const *j
;
2966 fprintf (report_times_to_file
, "%g %g", ut
, st
);
2968 for (j
= &commands
[i
].prog
; *j
; j
= &commands
[i
].argv
[++c
])
2971 for (p
= *j
; *p
; ++p
)
2972 if (*p
== '"' || *p
== '\\' || *p
== '$'
2978 fprintf (report_times_to_file
, " \"");
2979 for (p
= *j
; *p
; ++p
)
2981 if (*p
== '"' || *p
== '\\' || *p
== '$')
2982 fputc ('\\', report_times_to_file
);
2983 fputc (*p
, report_times_to_file
);
2985 fputc ('"', report_times_to_file
);
2988 fprintf (report_times_to_file
, " %s", *j
);
2991 fputc ('\n', report_times_to_file
);
3001 /* Find all the switches given to us
3002 and make a vector describing them.
3003 The elements of the vector are strings, one per switch given.
3004 If a switch uses following arguments, then the `part1' field
3005 is the switch itself and the `args' field
3006 is a null-terminated vector containing the following arguments.
3007 Bits in the `live_cond' field are:
3008 SWITCH_LIVE to indicate this switch is true in a conditional spec.
3009 SWITCH_FALSE to indicate this switch is overridden by a later switch.
3010 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
3011 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
3012 in all do_spec calls afterwards. Used for %<S from self specs.
3013 The `validated' field is nonzero if any spec has looked at this switch;
3014 if it remains zero at the end of the run, it must be meaningless. */
3016 #define SWITCH_LIVE (1 << 0)
3017 #define SWITCH_FALSE (1 << 1)
3018 #define SWITCH_IGNORE (1 << 2)
3019 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
3020 #define SWITCH_KEEP_FOR_GCC (1 << 4)
3026 unsigned int live_cond
;
3032 static struct switchstr
*switches
;
3034 static int n_switches
;
3036 static int n_switches_alloc
;
3038 /* Set to zero if -fcompare-debug is disabled, positive if it's
3039 enabled and we're running the first compilation, negative if it's
3040 enabled and we're running the second compilation. For most of the
3041 time, it's in the range -1..1, but it can be temporarily set to 2
3042 or 3 to indicate that the -fcompare-debug flags didn't come from
3043 the command-line, but rather from the GCC_COMPARE_DEBUG environment
3044 variable, until a synthesized -fcompare-debug flag is added to the
3048 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
3049 int compare_debug_second
;
3051 /* Set to the flags that should be passed to the second compilation in
3052 a -fcompare-debug compilation. */
3053 const char *compare_debug_opt
;
3055 static struct switchstr
*switches_debug_check
[2];
3057 static int n_switches_debug_check
[2];
3059 static int n_switches_alloc_debug_check
[2];
3061 static char *debug_check_temp_file
[2];
3063 /* Language is one of three things:
3065 1) The name of a real programming language.
3066 2) NULL, indicating that no one has figured out
3068 3) '*', indicating that the file should be passed
3073 const char *language
;
3074 struct compiler
*incompiler
;
3079 /* Also a vector of input files specified. */
3081 static struct infile
*infiles
;
3085 static int n_infiles_alloc
;
3087 /* True if multiple input files are being compiled to a single
3090 static bool combine_inputs
;
3092 /* This counts the number of libraries added by lang_specific_driver, so that
3093 we can tell if there were any user supplied any files or libraries. */
3095 static int added_libraries
;
3097 /* And a vector of corresponding output files is made up later. */
3099 const char **outfiles
;
3101 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3103 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
3104 is true if we should look for an executable suffix. DO_OBJ
3105 is true if we should look for an object suffix. */
3108 convert_filename (const char *name
, int do_exe ATTRIBUTE_UNUSED
,
3109 int do_obj ATTRIBUTE_UNUSED
)
3111 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3119 len
= strlen (name
);
3121 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3122 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
3123 if (do_obj
&& len
> 2
3124 && name
[len
- 2] == '.'
3125 && name
[len
- 1] == 'o')
3127 obstack_grow (&obstack
, name
, len
- 2);
3128 obstack_grow0 (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
3129 name
= XOBFINISH (&obstack
, const char *);
3133 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3134 /* If there is no filetype, make it the executable suffix (which includes
3135 the "."). But don't get confused if we have just "-o". */
3136 if (! do_exe
|| TARGET_EXECUTABLE_SUFFIX
[0] == 0 || (len
== 2 && name
[0] == '-'))
3139 for (i
= len
- 1; i
>= 0; i
--)
3140 if (IS_DIR_SEPARATOR (name
[i
]))
3143 for (i
++; i
< len
; i
++)
3147 obstack_grow (&obstack
, name
, len
);
3148 obstack_grow0 (&obstack
, TARGET_EXECUTABLE_SUFFIX
,
3149 strlen (TARGET_EXECUTABLE_SUFFIX
));
3150 name
= XOBFINISH (&obstack
, const char *);
3157 /* Display the command line switches accepted by gcc. */
3161 printf (_("Usage: %s [options] file...\n"), progname
);
3162 fputs (_("Options:\n"), stdout
);
3164 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout
);
3165 fputs (_(" --help Display this information\n"), stdout
);
3166 fputs (_(" --target-help Display target specific command line options\n"), stdout
);
3167 fputs (_(" --help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumented}}[,...]\n"), stdout
);
3168 fputs (_(" Display specific types of command line options\n"), stdout
);
3170 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout
);
3171 fputs (_(" --version Display compiler version information\n"), stdout
);
3172 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout
);
3173 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout
);
3174 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout
);
3175 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout
);
3176 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout
);
3177 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout
);
3178 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout
);
3180 -print-multiarch Display the target's normalized GNU triplet, used as\n\
3181 a component in the library path\n"), stdout
);
3182 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout
);
3184 -print-multi-lib Display the mapping between command line options and\n\
3185 multiple library search directories\n"), stdout
);
3186 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout
);
3187 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout
);
3188 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout
);
3189 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout
);
3190 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout
);
3191 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout
);
3192 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout
);
3193 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout
);
3194 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout
);
3195 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout
);
3196 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout
);
3198 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
3199 prefixes to other gcc components\n"), stdout
);
3200 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout
);
3201 fputs (_(" -time Time the execution of each subprocess\n"), stdout
);
3202 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout
);
3203 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout
);
3205 --sysroot=<directory> Use <directory> as the root directory for headers\n\
3206 and libraries\n"), stdout
);
3207 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout
);
3208 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout
);
3209 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout
);
3210 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout
);
3211 fputs (_(" -S Compile only; do not assemble or link\n"), stdout
);
3212 fputs (_(" -c Compile and assemble, but do not link\n"), stdout
);
3213 fputs (_(" -o <file> Place the output into <file>\n"), stdout
);
3214 fputs (_(" -pie Create a position independent executable\n"), stdout
);
3215 fputs (_(" -shared Create a shared library\n"), stdout
);
3217 -x <language> Specify the language of the following input files\n\
3218 Permissible languages include: c c++ assembler none\n\
3219 'none' means revert to the default behavior of\n\
3220 guessing the language based on the file's extension\n\
3224 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3225 passed on to the various sub-processes invoked by %s. In order to pass\n\
3226 other options on to these processes the -W<letter> options must be used.\n\
3229 /* The rest of the options are displayed by invocations of the various
3234 add_preprocessor_option (const char *option
, int len
)
3236 preprocessor_options
.safe_push (save_string (option
, len
));
3240 add_assembler_option (const char *option
, int len
)
3242 assembler_options
.safe_push (save_string (option
, len
));
3246 add_linker_option (const char *option
, int len
)
3248 linker_options
.safe_push (save_string (option
, len
));
3251 /* Allocate space for an input file in infiles. */
3256 if (n_infiles_alloc
== 0)
3258 n_infiles_alloc
= 16;
3259 infiles
= XNEWVEC (struct infile
, n_infiles_alloc
);
3261 else if (n_infiles_alloc
== n_infiles
)
3263 n_infiles_alloc
*= 2;
3264 infiles
= XRESIZEVEC (struct infile
, infiles
, n_infiles_alloc
);
3268 /* Store an input file with the given NAME and LANGUAGE in
3272 add_infile (const char *name
, const char *language
)
3275 infiles
[n_infiles
].name
= name
;
3276 infiles
[n_infiles
++].language
= language
;
3279 /* Allocate space for a switch in switches. */
3284 if (n_switches_alloc
== 0)
3286 n_switches_alloc
= 16;
3287 switches
= XNEWVEC (struct switchstr
, n_switches_alloc
);
3289 else if (n_switches_alloc
== n_switches
)
3291 n_switches_alloc
*= 2;
3292 switches
= XRESIZEVEC (struct switchstr
, switches
, n_switches_alloc
);
3296 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3297 as validated if VALIDATED and KNOWN if it is an internal switch. */
3300 save_switch (const char *opt
, size_t n_args
, const char *const *args
,
3301 bool validated
, bool known
)
3304 switches
[n_switches
].part1
= opt
+ 1;
3306 switches
[n_switches
].args
= 0;
3309 switches
[n_switches
].args
= XNEWVEC (const char *, n_args
+ 1);
3310 memcpy (switches
[n_switches
].args
, args
, n_args
* sizeof (const char *));
3311 switches
[n_switches
].args
[n_args
] = NULL
;
3314 switches
[n_switches
].live_cond
= 0;
3315 switches
[n_switches
].validated
= validated
;
3316 switches
[n_switches
].known
= known
;
3317 switches
[n_switches
].ordering
= 0;
3321 /* Handle an option DECODED that is unknown to the option-processing
3325 driver_unknown_option_callback (const struct cl_decoded_option
*decoded
)
3327 const char *opt
= decoded
->arg
;
3328 if (opt
[1] == 'W' && opt
[2] == 'n' && opt
[3] == 'o' && opt
[4] == '-'
3329 && !(decoded
->errors
& CL_ERR_NEGATIVE
))
3331 /* Leave unknown -Wno-* options for the compiler proper, to be
3332 diagnosed only if there are warnings. */
3333 save_switch (decoded
->canonical_option
[0],
3334 decoded
->canonical_option_num_elements
- 1,
3335 &decoded
->canonical_option
[1], false, true);
3338 if (decoded
->opt_index
== OPT_SPECIAL_unknown
)
3340 /* Give it a chance to define it a a spec file. */
3341 save_switch (decoded
->canonical_option
[0],
3342 decoded
->canonical_option_num_elements
- 1,
3343 &decoded
->canonical_option
[1], false, false);
3350 /* Handle an option DECODED that is not marked as CL_DRIVER.
3351 LANG_MASK will always be CL_DRIVER. */
3354 driver_wrong_lang_callback (const struct cl_decoded_option
*decoded
,
3355 unsigned int lang_mask ATTRIBUTE_UNUSED
)
3357 /* At this point, non-driver options are accepted (and expected to
3358 be passed down by specs) unless marked to be rejected by the
3359 driver. Options to be rejected by the driver but accepted by the
3360 compilers proper are treated just like completely unknown
3362 const struct cl_option
*option
= &cl_options
[decoded
->opt_index
];
3364 if (option
->cl_reject_driver
)
3365 error ("unrecognized command line option %qs",
3366 decoded
->orig_option_with_args_text
);
3368 save_switch (decoded
->canonical_option
[0],
3369 decoded
->canonical_option_num_elements
- 1,
3370 &decoded
->canonical_option
[1], false, true);
3373 static const char *spec_lang
= 0;
3374 static int last_language_n_infiles
;
3376 /* Handle a driver option; arguments and return value as for
3380 driver_handle_option (struct gcc_options
*opts
,
3381 struct gcc_options
*opts_set
,
3382 const struct cl_decoded_option
*decoded
,
3383 unsigned int lang_mask ATTRIBUTE_UNUSED
, int kind
,
3385 const struct cl_option_handlers
*handlers ATTRIBUTE_UNUSED
,
3386 diagnostic_context
*dc
)
3388 size_t opt_index
= decoded
->opt_index
;
3389 const char *arg
= decoded
->arg
;
3390 const char *compare_debug_replacement_opt
;
3391 int value
= decoded
->value
;
3392 bool validated
= false;
3393 bool do_save
= true;
3395 gcc_assert (opts
== &global_options
);
3396 gcc_assert (opts_set
== &global_options_set
);
3397 gcc_assert (kind
== DK_UNSPECIFIED
);
3398 gcc_assert (loc
== UNKNOWN_LOCATION
);
3399 gcc_assert (dc
== global_dc
);
3405 struct spec_list
*sl
;
3407 for (sl
= specs
; sl
; sl
= sl
->next
)
3408 printf ("*%s:\n%s\n\n", sl
->name
, *(sl
->ptr_spec
));
3409 if (link_command_spec
)
3410 printf ("*link_command:\n%s\n\n", link_command_spec
);
3414 case OPT_dumpversion
:
3415 printf ("%s\n", spec_version
);
3418 case OPT_dumpmachine
:
3419 printf ("%s\n", spec_machine
);
3425 /* CPP driver cannot obtain switch from cc1_options. */
3427 add_preprocessor_option ("--version", strlen ("--version"));
3428 add_assembler_option ("--version", strlen ("--version"));
3429 add_linker_option ("--version", strlen ("--version"));
3433 print_help_list
= 1;
3435 /* CPP driver cannot obtain switch from cc1_options. */
3437 add_preprocessor_option ("--help", 6);
3438 add_assembler_option ("--help", 6);
3439 add_linker_option ("--help", 6);
3443 print_subprocess_help
= 2;
3446 case OPT__target_help
:
3447 print_subprocess_help
= 1;
3449 /* CPP driver cannot obtain switch from cc1_options. */
3451 add_preprocessor_option ("--target-help", 13);
3452 add_assembler_option ("--target-help", 13);
3453 add_linker_option ("--target-help", 13);
3456 case OPT__no_sysroot_suffix
:
3457 case OPT_pass_exit_codes
:
3458 case OPT_print_search_dirs
:
3459 case OPT_print_file_name_
:
3460 case OPT_print_prog_name_
:
3461 case OPT_print_multi_lib
:
3462 case OPT_print_multi_directory
:
3463 case OPT_print_sysroot
:
3464 case OPT_print_multi_os_directory
:
3465 case OPT_print_multiarch
:
3466 case OPT_print_sysroot_headers_suffix
:
3469 /* These options set the variables specified in common.opt
3470 automatically, and do not need to be saved for spec
3475 case OPT_print_libgcc_file_name
:
3476 print_file_name
= "libgcc.a";
3480 case OPT_fuse_ld_bfd
:
3484 case OPT_fuse_ld_gold
:
3488 case OPT_fcompare_debug_second
:
3489 compare_debug_second
= 1;
3492 case OPT_fcompare_debug
:
3496 compare_debug_replacement_opt
= "-fcompare-debug=";
3498 goto compare_debug_with_arg
;
3501 compare_debug_replacement_opt
= "-fcompare-debug=-gtoggle";
3503 goto compare_debug_with_arg
;
3510 case OPT_fcompare_debug_
:
3511 compare_debug_replacement_opt
= decoded
->canonical_option
[0];
3512 compare_debug_with_arg
:
3513 gcc_assert (decoded
->canonical_option_num_elements
== 1);
3514 gcc_assert (arg
!= NULL
);
3519 if (compare_debug
< 0)
3520 compare_debug_opt
= NULL
;
3522 compare_debug_opt
= arg
;
3523 save_switch (compare_debug_replacement_opt
, 0, NULL
, validated
, true);
3529 /* Pass the rest of this option to the assembler. */
3531 /* Split the argument at commas. */
3533 for (j
= 0; arg
[j
]; j
++)
3536 add_assembler_option (arg
+ prev
, j
- prev
);
3540 /* Record the part after the last comma. */
3541 add_assembler_option (arg
+ prev
, j
- prev
);
3549 /* Pass the rest of this option to the preprocessor. */
3551 /* Split the argument at commas. */
3553 for (j
= 0; arg
[j
]; j
++)
3556 add_preprocessor_option (arg
+ prev
, j
- prev
);
3560 /* Record the part after the last comma. */
3561 add_preprocessor_option (arg
+ prev
, j
- prev
);
3569 /* Split the argument at commas. */
3571 for (j
= 0; arg
[j
]; j
++)
3574 add_infile (save_string (arg
+ prev
, j
- prev
), "*");
3577 /* Record the part after the last comma. */
3578 add_infile (arg
+ prev
, "*");
3584 add_infile (arg
, "*");
3588 case OPT_Xpreprocessor
:
3589 add_preprocessor_option (arg
, strlen (arg
));
3593 case OPT_Xassembler
:
3594 add_assembler_option (arg
, strlen (arg
));
3599 /* POSIX allows separation of -l and the lib arg; canonicalize
3600 by concatenating -l with its arg */
3601 add_infile (concat ("-l", arg
, NULL
), "*");
3606 /* Similarly, canonicalize -L for linkers that may not accept
3607 separate arguments. */
3608 save_switch (concat ("-L", arg
, NULL
), 0, NULL
, validated
, true);
3613 save_switch (concat ("-F", arg
, NULL
), 0, NULL
, validated
, true);
3616 case OPT_save_temps
:
3617 save_temps_flag
= SAVE_TEMPS_CWD
;
3621 case OPT_save_temps_
:
3622 if (strcmp (arg
, "cwd") == 0)
3623 save_temps_flag
= SAVE_TEMPS_CWD
;
3624 else if (strcmp (arg
, "obj") == 0
3625 || strcmp (arg
, "object") == 0)
3626 save_temps_flag
= SAVE_TEMPS_OBJ
;
3628 fatal_error ("%qs is an unknown -save-temps option",
3629 decoded
->orig_option_with_args_text
);
3632 case OPT_no_canonical_prefixes
:
3633 /* Already handled as a special case, so ignored here. */
3639 /* These options set the variables specified in common.opt
3640 automatically, but do need to be saved for spec
3646 struct user_specs
*user
= XNEW (struct user_specs
);
3648 user
->next
= (struct user_specs
*) 0;
3649 user
->filename
= arg
;
3650 if (user_specs_tail
)
3651 user_specs_tail
->next
= user
;
3653 user_specs_head
= user
;
3654 user_specs_tail
= user
;
3660 target_system_root
= arg
;
3661 target_system_root_changed
= 1;
3666 if (report_times_to_file
)
3667 fclose (report_times_to_file
);
3668 report_times_to_file
= fopen (arg
, "a");
3674 This is similar to -v except that there is no execution
3675 of the commands and the echoed arguments are quoted. It
3676 is intended for use in shell scripts to capture the
3677 driver-generated command line. */
3678 verbose_only_flag
++;
3685 size_t len
= strlen (arg
);
3687 /* Catch the case where the user has forgotten to append a
3688 directory separator to the path. Note, they may be using
3689 -B to add an executable name prefix, eg "i386-elf-", in
3690 order to distinguish between multiple installations of
3691 GCC in the same directory. Hence we must check to see
3692 if appending a directory separator actually makes a
3693 valid directory name. */
3694 if (!IS_DIR_SEPARATOR (arg
[len
- 1])
3695 && is_directory (arg
, false))
3697 char *tmp
= XNEWVEC (char, len
+ 2);
3699 tmp
[len
] = DIR_SEPARATOR
;
3704 add_prefix (&exec_prefixes
, arg
, NULL
,
3705 PREFIX_PRIORITY_B_OPT
, 0, 0);
3706 add_prefix (&startfile_prefixes
, arg
, NULL
,
3707 PREFIX_PRIORITY_B_OPT
, 0, 0);
3708 add_prefix (&include_prefixes
, arg
, NULL
,
3709 PREFIX_PRIORITY_B_OPT
, 0, 0);
3716 if (!strcmp (spec_lang
, "none"))
3717 /* Suppress the warning if -xnone comes after the last input
3718 file, because alternate command interfaces like g++ might
3719 find it useful to place -xnone after each input file. */
3722 last_language_n_infiles
= n_infiles
;
3728 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3729 arg
= convert_filename (arg
, ! have_c
, 0);
3731 /* Save the output name in case -save-temps=obj was used. */
3732 save_temps_prefix
= xstrdup (arg
);
3733 /* On some systems, ld cannot handle "-o" without a space. So
3734 split the option from its argument. */
3735 save_switch ("-o", 1, &arg
, validated
, true);
3738 case OPT_static_libgcc
:
3739 case OPT_shared_libgcc
:
3740 case OPT_static_libgfortran
:
3741 case OPT_static_libstdc__
:
3742 /* These are always valid, since gcc.c itself understands the
3743 first two, gfortranspec.c understands -static-libgfortran and
3744 g++spec.c understands -static-libstdc++ */
3753 /* Various driver options need no special processing at this
3754 point, having been handled in a prescan above or being
3755 handled by specs. */
3760 save_switch (decoded
->canonical_option
[0],
3761 decoded
->canonical_option_num_elements
- 1,
3762 &decoded
->canonical_option
[1], validated
, true);
3766 /* Put the driver's standard set of option handlers in *HANDLERS. */
3769 set_option_handlers (struct cl_option_handlers
*handlers
)
3771 handlers
->unknown_option_callback
= driver_unknown_option_callback
;
3772 handlers
->wrong_lang_callback
= driver_wrong_lang_callback
;
3773 handlers
->num_handlers
= 3;
3774 handlers
->handlers
[0].handler
= driver_handle_option
;
3775 handlers
->handlers
[0].mask
= CL_DRIVER
;
3776 handlers
->handlers
[1].handler
= common_handle_option
;
3777 handlers
->handlers
[1].mask
= CL_COMMON
;
3778 handlers
->handlers
[2].handler
= target_handle_option
;
3779 handlers
->handlers
[2].mask
= CL_TARGET
;
3782 /* Create the vector `switches' and its contents.
3783 Store its length in `n_switches'. */
3786 process_command (unsigned int decoded_options_count
,
3787 struct cl_decoded_option
*decoded_options
)
3791 char *tooldir_prefix
, *tooldir_prefix2
;
3792 char *(*get_relative_prefix
) (const char *, const char *,
3793 const char *) = NULL
;
3794 struct cl_option_handlers handlers
;
3797 gcc_exec_prefix
= getenv ("GCC_EXEC_PREFIX");
3801 added_libraries
= 0;
3803 /* Figure compiler version from version string. */
3805 compiler_version
= temp1
= xstrdup (version_string
);
3807 for (; *temp1
; ++temp1
)
3816 /* Handle any -no-canonical-prefixes flag early, to assign the function
3817 that builds relative prefixes. This function creates default search
3818 paths that are needed later in normal option handling. */
3820 for (j
= 1; j
< decoded_options_count
; j
++)
3822 if (decoded_options
[j
].opt_index
== OPT_no_canonical_prefixes
)
3824 get_relative_prefix
= make_relative_prefix_ignore_links
;
3828 if (! get_relative_prefix
)
3829 get_relative_prefix
= make_relative_prefix
;
3831 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3832 see if we can create it from the pathname specified in
3833 decoded_options[0].arg. */
3835 gcc_libexec_prefix
= standard_libexec_prefix
;
3837 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3838 if (!gcc_exec_prefix
)
3840 gcc_exec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3841 standard_bindir_prefix
,
3842 standard_exec_prefix
);
3843 gcc_libexec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3844 standard_bindir_prefix
,
3845 standard_libexec_prefix
);
3846 if (gcc_exec_prefix
)
3847 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix
, NULL
));
3851 /* make_relative_prefix requires a program name, but
3852 GCC_EXEC_PREFIX is typically a directory name with a trailing
3853 / (which is ignored by make_relative_prefix), so append a
3855 char *tmp_prefix
= concat (gcc_exec_prefix
, "gcc", NULL
);
3856 gcc_libexec_prefix
= get_relative_prefix (tmp_prefix
,
3857 standard_exec_prefix
,
3858 standard_libexec_prefix
);
3860 /* The path is unrelocated, so fallback to the original setting. */
3861 if (!gcc_libexec_prefix
)
3862 gcc_libexec_prefix
= standard_libexec_prefix
;
3868 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3869 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3870 or an automatically created GCC_EXEC_PREFIX from
3871 decoded_options[0].arg. */
3873 /* Do language-specific adjustment/addition of flags. */
3874 lang_specific_driver (&decoded_options
, &decoded_options_count
,
3877 if (gcc_exec_prefix
)
3879 int len
= strlen (gcc_exec_prefix
);
3881 if (len
> (int) sizeof ("/lib/gcc/") - 1
3882 && (IS_DIR_SEPARATOR (gcc_exec_prefix
[len
-1])))
3884 temp
= gcc_exec_prefix
+ len
- sizeof ("/lib/gcc/") + 1;
3885 if (IS_DIR_SEPARATOR (*temp
)
3886 && filename_ncmp (temp
+ 1, "lib", 3) == 0
3887 && IS_DIR_SEPARATOR (temp
[4])
3888 && filename_ncmp (temp
+ 5, "gcc", 3) == 0)
3889 len
-= sizeof ("/lib/gcc/") - 1;
3892 set_std_prefix (gcc_exec_prefix
, len
);
3893 add_prefix (&exec_prefixes
, gcc_libexec_prefix
, "GCC",
3894 PREFIX_PRIORITY_LAST
, 0, 0);
3895 add_prefix (&startfile_prefixes
, gcc_exec_prefix
, "GCC",
3896 PREFIX_PRIORITY_LAST
, 0, 0);
3899 /* COMPILER_PATH and LIBRARY_PATH have values
3900 that are lists of directory names with colons. */
3902 temp
= getenv ("COMPILER_PATH");
3905 const char *startp
, *endp
;
3906 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3908 startp
= endp
= temp
;
3911 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3913 strncpy (nstore
, startp
, endp
- startp
);
3915 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3916 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3918 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3919 nstore
[endp
- startp
+ 1] = 0;
3922 nstore
[endp
- startp
] = 0;
3923 add_prefix (&exec_prefixes
, nstore
, 0,
3924 PREFIX_PRIORITY_LAST
, 0, 0);
3925 add_prefix (&include_prefixes
, nstore
, 0,
3926 PREFIX_PRIORITY_LAST
, 0, 0);
3929 endp
= startp
= endp
+ 1;
3936 temp
= getenv (LIBRARY_PATH_ENV
);
3937 if (temp
&& *cross_compile
== '0')
3939 const char *startp
, *endp
;
3940 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3942 startp
= endp
= temp
;
3945 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3947 strncpy (nstore
, startp
, endp
- startp
);
3949 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3950 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3952 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3953 nstore
[endp
- startp
+ 1] = 0;
3956 nstore
[endp
- startp
] = 0;
3957 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3958 PREFIX_PRIORITY_LAST
, 0, 1);
3961 endp
= startp
= endp
+ 1;
3968 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3969 temp
= getenv ("LPATH");
3970 if (temp
&& *cross_compile
== '0')
3972 const char *startp
, *endp
;
3973 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3975 startp
= endp
= temp
;
3978 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3980 strncpy (nstore
, startp
, endp
- startp
);
3982 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3983 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3985 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3986 nstore
[endp
- startp
+ 1] = 0;
3989 nstore
[endp
- startp
] = 0;
3990 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3991 PREFIX_PRIORITY_LAST
, 0, 1);
3994 endp
= startp
= endp
+ 1;
4001 /* Process the options and store input files and switches in their
4004 last_language_n_infiles
= -1;
4006 set_option_handlers (&handlers
);
4008 for (j
= 1; j
< decoded_options_count
; j
++)
4010 switch (decoded_options
[j
].opt_index
)
4022 for (j
= 1; j
< decoded_options_count
; j
++)
4024 if (decoded_options
[j
].opt_index
== OPT_SPECIAL_input_file
)
4026 const char *arg
= decoded_options
[j
].arg
;
4027 const char *p
= strrchr (arg
, '@');
4031 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4032 arg
= convert_filename (arg
, 0, access (arg
, F_OK
));
4034 /* For LTO static archive support we handle input file
4035 specifications that are composed of a filename and
4036 an offset like FNAME@OFFSET. */
4039 && sscanf (p
, "@%li%n", &offset
, &consumed
) >= 1
4040 && strlen (p
) == (unsigned int)consumed
)
4042 fname
= (char *)xmalloc (p
- arg
+ 1);
4043 memcpy (fname
, arg
, p
- arg
);
4044 fname
[p
- arg
] = '\0';
4045 /* Only accept non-stdin and existing FNAME parts, otherwise
4046 try with the full name. */
4047 if (strcmp (fname
, "-") == 0 || access (fname
, F_OK
) < 0)
4050 fname
= xstrdup (arg
);
4054 fname
= xstrdup (arg
);
4056 if (strcmp (fname
, "-") != 0 && access (fname
, F_OK
) < 0)
4057 perror_with_name (fname
);
4059 add_infile (arg
, spec_lang
);
4065 read_cmdline_option (&global_options
, &global_options_set
,
4066 decoded_options
+ j
, UNKNOWN_LOCATION
,
4067 CL_DRIVER
, &handlers
, global_dc
);
4070 /* If -save-temps=obj and -o name, create the prefix to use for %b.
4071 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
4072 if (save_temps_flag
== SAVE_TEMPS_OBJ
&& save_temps_prefix
!= NULL
)
4074 save_temps_length
= strlen (save_temps_prefix
);
4075 temp
= strrchr (lbasename (save_temps_prefix
), '.');
4078 save_temps_length
-= strlen (temp
);
4079 save_temps_prefix
[save_temps_length
] = '\0';
4083 else if (save_temps_prefix
!= NULL
)
4085 free (save_temps_prefix
);
4086 save_temps_prefix
= NULL
;
4089 if (save_temps_flag
&& use_pipes
)
4091 /* -save-temps overrides -pipe, so that temp files are produced */
4092 if (save_temps_flag
)
4093 warning (0, "-pipe ignored because -save-temps specified");
4099 const char *gcd
= getenv ("GCC_COMPARE_DEBUG");
4101 if (gcd
&& gcd
[0] == '-')
4104 compare_debug_opt
= gcd
;
4106 else if (gcd
&& *gcd
&& strcmp (gcd
, "0"))
4109 compare_debug_opt
= "-gtoggle";
4112 else if (compare_debug
< 0)
4115 gcc_assert (!compare_debug_opt
);
4118 /* Set up the search paths. We add directories that we expect to
4119 contain GNU Toolchain components before directories specified by
4120 the machine description so that we will find GNU components (like
4121 the GNU assembler) before those of the host system. */
4123 /* If we don't know where the toolchain has been installed, use the
4124 configured-in locations. */
4125 if (!gcc_exec_prefix
)
4128 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "GCC",
4129 PREFIX_PRIORITY_LAST
, 1, 0);
4130 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "BINUTILS",
4131 PREFIX_PRIORITY_LAST
, 2, 0);
4132 add_prefix (&exec_prefixes
, standard_exec_prefix
, "BINUTILS",
4133 PREFIX_PRIORITY_LAST
, 2, 0);
4135 add_prefix (&startfile_prefixes
, standard_exec_prefix
, "BINUTILS",
4136 PREFIX_PRIORITY_LAST
, 1, 0);
4139 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix
));
4140 tooldir_prefix2
= concat (tooldir_base_prefix
, spec_machine
,
4141 dir_separator_str
, NULL
);
4143 /* Look for tools relative to the location from which the driver is
4144 running, or, if that is not available, the configured prefix. */
4146 = concat (gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
4147 spec_machine
, dir_separator_str
,
4148 spec_version
, dir_separator_str
, tooldir_prefix2
, NULL
);
4149 free (tooldir_prefix2
);
4151 add_prefix (&exec_prefixes
,
4152 concat (tooldir_prefix
, "bin", dir_separator_str
, NULL
),
4153 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 0);
4154 add_prefix (&startfile_prefixes
,
4155 concat (tooldir_prefix
, "lib", dir_separator_str
, NULL
),
4156 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 1);
4157 free (tooldir_prefix
);
4159 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
4160 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
4161 then consider it to relocate with the rest of the GCC installation
4162 if GCC_EXEC_PREFIX is set.
4163 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
4164 if (target_system_root
&& !target_system_root_changed
&& gcc_exec_prefix
)
4166 char *tmp_prefix
= get_relative_prefix (decoded_options
[0].arg
,
4167 standard_bindir_prefix
,
4168 target_system_root
);
4169 if (tmp_prefix
&& access_check (tmp_prefix
, F_OK
) == 0)
4171 target_system_root
= tmp_prefix
;
4172 target_system_root_changed
= 1;
4177 /* More prefixes are enabled in main, after we read the specs file
4178 and determine whether this is cross-compilation or not. */
4180 if (n_infiles
== last_language_n_infiles
&& spec_lang
!= 0)
4181 warning (0, "%<-x %s%> after last input file has no effect", spec_lang
);
4183 /* Synthesize -fcompare-debug flag from the GCC_COMPARE_DEBUG
4184 environment variable. */
4185 if (compare_debug
== 2 || compare_debug
== 3)
4187 const char *opt
= concat ("-fcompare-debug=", compare_debug_opt
, NULL
);
4188 save_switch (opt
, 0, NULL
, false, true);
4192 /* Ensure we only invoke each subprocess once. */
4193 if (print_subprocess_help
|| print_help_list
|| print_version
)
4197 /* Create a dummy input file, so that we can pass
4198 the help option on to the various sub-processes. */
4199 add_infile ("help-dummy", "c");
4203 switches
[n_switches
].part1
= 0;
4205 infiles
[n_infiles
].name
= 0;
4208 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4209 and place that in the environment. */
4212 set_collect_gcc_options (void)
4217 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4219 obstack_grow (&collect_obstack
, "COLLECT_GCC_OPTIONS=",
4220 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4223 for (i
= 0; (int) i
< n_switches
; i
++)
4225 const char *const *args
;
4228 obstack_grow (&collect_obstack
, " ", 1);
4232 /* Ignore elided switches. */
4233 if ((switches
[i
].live_cond
4234 & (SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
))
4238 obstack_grow (&collect_obstack
, "'-", 2);
4239 q
= switches
[i
].part1
;
4240 while ((p
= strchr (q
, '\'')))
4242 obstack_grow (&collect_obstack
, q
, p
- q
);
4243 obstack_grow (&collect_obstack
, "'\\''", 4);
4246 obstack_grow (&collect_obstack
, q
, strlen (q
));
4247 obstack_grow (&collect_obstack
, "'", 1);
4249 for (args
= switches
[i
].args
; args
&& *args
; args
++)
4251 obstack_grow (&collect_obstack
, " '", 2);
4253 while ((p
= strchr (q
, '\'')))
4255 obstack_grow (&collect_obstack
, q
, p
- q
);
4256 obstack_grow (&collect_obstack
, "'\\''", 4);
4259 obstack_grow (&collect_obstack
, q
, strlen (q
));
4260 obstack_grow (&collect_obstack
, "'", 1);
4263 obstack_grow (&collect_obstack
, "\0", 1);
4264 xputenv (XOBFINISH (&collect_obstack
, char *));
4267 /* Process a spec string, accumulating and running commands. */
4269 /* These variables describe the input file name.
4270 input_file_number is the index on outfiles of this file,
4271 so that the output file name can be stored for later use by %o.
4272 input_basename is the start of the part of the input file
4273 sans all directory names, and basename_length is the number
4274 of characters starting there excluding the suffix .c or whatever. */
4276 static const char *gcc_input_filename
;
4277 static int input_file_number
;
4278 size_t input_filename_length
;
4279 static int basename_length
;
4280 static int suffixed_basename_length
;
4281 static const char *input_basename
;
4282 static const char *input_suffix
;
4283 #ifndef HOST_LACKS_INODE_NUMBERS
4284 static struct stat input_stat
;
4286 static int input_stat_set
;
4288 /* The compiler used to process the current input file. */
4289 static struct compiler
*input_file_compiler
;
4291 /* These are variables used within do_spec and do_spec_1. */
4293 /* Nonzero if an arg has been started and not yet terminated
4294 (with space, tab or newline). */
4295 static int arg_going
;
4297 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4298 is a temporary file name. */
4299 static int delete_this_arg
;
4301 /* Nonzero means %w has been seen; the next arg to be terminated
4302 is the output file name of this compilation. */
4303 static int this_is_output_file
;
4305 /* Nonzero means %s has been seen; the next arg to be terminated
4306 is the name of a library file and we should try the standard
4307 search dirs for it. */
4308 static int this_is_library_file
;
4310 /* Nonzero means %T has been seen; the next arg to be terminated
4311 is the name of a linker script and we should try all of the
4312 standard search dirs for it. If it is found insert a --script
4313 command line switch and then substitute the full path in place,
4314 otherwise generate an error message. */
4315 static int this_is_linker_script
;
4317 /* Nonzero means that the input of this command is coming from a pipe. */
4318 static int input_from_pipe
;
4320 /* Nonnull means substitute this for any suffix when outputting a switches
4322 static const char *suffix_subst
;
4324 /* If there is an argument being accumulated, terminate it and store it. */
4327 end_going_arg (void)
4333 obstack_1grow (&obstack
, 0);
4334 string
= XOBFINISH (&obstack
, const char *);
4335 if (this_is_library_file
)
4336 string
= find_file (string
);
4337 if (this_is_linker_script
)
4339 char * full_script_path
= find_a_file (&startfile_prefixes
, string
, R_OK
, true);
4341 if (full_script_path
== NULL
)
4343 error ("unable to locate default linker script %qs in the library search paths", string
);
4344 /* Script was not found on search path. */
4347 store_arg ("--script", false, false);
4348 string
= full_script_path
;
4350 store_arg (string
, delete_this_arg
, this_is_output_file
);
4351 if (this_is_output_file
)
4352 outfiles
[input_file_number
] = string
;
4358 /* Parse the WRAPPER string which is a comma separated list of the command line
4359 and insert them into the beginning of argbuf. */
4362 insert_wrapper (const char *wrapper
)
4366 char *buf
= xstrdup (wrapper
);
4368 unsigned int old_length
= argbuf
.length ();
4376 while ((p
= strchr (p
, ',')) != NULL
);
4378 argbuf
.safe_grow (old_length
+ n
);
4379 memmove (argbuf
.address () + n
,
4381 old_length
* sizeof (const_char_p
));
4395 while ((p
= strchr (p
, ',')) != NULL
);
4396 gcc_assert (i
== n
);
4399 /* Process the spec SPEC and run the commands specified therein.
4400 Returns 0 if the spec is successfully processed; -1 if failed. */
4403 do_spec (const char *spec
)
4407 value
= do_spec_2 (spec
);
4409 /* Force out any unfinished command.
4410 If -pipe, this forces out the last command if it ended in `|'. */
4413 if (argbuf
.length () > 0
4414 && !strcmp (argbuf
.last (), "|"))
4417 set_collect_gcc_options ();
4419 if (argbuf
.length () > 0)
4427 do_spec_2 (const char *spec
)
4433 delete_this_arg
= 0;
4434 this_is_output_file
= 0;
4435 this_is_library_file
= 0;
4436 this_is_linker_script
= 0;
4437 input_from_pipe
= 0;
4438 suffix_subst
= NULL
;
4440 result
= do_spec_1 (spec
, 0, NULL
);
4448 /* Process the given spec string and add any new options to the end
4449 of the switches/n_switches array. */
4452 do_option_spec (const char *name
, const char *spec
)
4454 unsigned int i
, value_count
, value_len
;
4455 const char *p
, *q
, *value
;
4456 char *tmp_spec
, *tmp_spec_p
;
4458 if (configure_default_options
[0].name
== NULL
)
4461 for (i
= 0; i
< ARRAY_SIZE (configure_default_options
); i
++)
4462 if (strcmp (configure_default_options
[i
].name
, name
) == 0)
4464 if (i
== ARRAY_SIZE (configure_default_options
))
4467 value
= configure_default_options
[i
].value
;
4468 value_len
= strlen (value
);
4470 /* Compute the size of the final spec. */
4473 while ((p
= strstr (p
, "%(VALUE)")) != NULL
)
4479 /* Replace each %(VALUE) by the specified value. */
4480 tmp_spec
= (char *) alloca (strlen (spec
) + 1
4481 + value_count
* (value_len
- strlen ("%(VALUE)")));
4482 tmp_spec_p
= tmp_spec
;
4484 while ((p
= strstr (q
, "%(VALUE)")) != NULL
)
4486 memcpy (tmp_spec_p
, q
, p
- q
);
4487 tmp_spec_p
= tmp_spec_p
+ (p
- q
);
4488 memcpy (tmp_spec_p
, value
, value_len
);
4489 tmp_spec_p
+= value_len
;
4490 q
= p
+ strlen ("%(VALUE)");
4492 strcpy (tmp_spec_p
, q
);
4494 do_self_spec (tmp_spec
);
4497 /* Process the given spec string and add any new options to the end
4498 of the switches/n_switches array. */
4501 do_self_spec (const char *spec
)
4506 do_spec_1 (" ", 0, NULL
);
4508 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4509 do_self_specs adds the replacements to switches array, so it shouldn't
4510 be processed afterwards. */
4511 for (i
= 0; i
< n_switches
; i
++)
4512 if ((switches
[i
].live_cond
& SWITCH_IGNORE
))
4513 switches
[i
].live_cond
|= SWITCH_IGNORE_PERMANENTLY
;
4515 if (argbuf
.length () > 0)
4517 const char **argbuf_copy
;
4518 struct cl_decoded_option
*decoded_options
;
4519 struct cl_option_handlers handlers
;
4520 unsigned int decoded_options_count
;
4523 /* Create a copy of argbuf with a dummy argv[0] entry for
4524 decode_cmdline_options_to_array. */
4525 argbuf_copy
= XNEWVEC (const char *,
4526 argbuf
.length () + 1);
4527 argbuf_copy
[0] = "";
4528 memcpy (argbuf_copy
+ 1, argbuf
.address (),
4529 argbuf
.length () * sizeof (const char *));
4531 decode_cmdline_options_to_array (argbuf
.length () + 1,
4533 CL_DRIVER
, &decoded_options
,
4534 &decoded_options_count
);
4537 set_option_handlers (&handlers
);
4539 for (j
= 1; j
< decoded_options_count
; j
++)
4541 switch (decoded_options
[j
].opt_index
)
4543 case OPT_SPECIAL_input_file
:
4544 /* Specs should only generate options, not input
4546 if (strcmp (decoded_options
[j
].arg
, "-") != 0)
4547 fatal_error ("switch %qs does not start with %<-%>",
4548 decoded_options
[j
].arg
);
4550 fatal_error ("spec-generated switch is just %<-%>");
4553 case OPT_fcompare_debug_second
:
4554 case OPT_fcompare_debug
:
4555 case OPT_fcompare_debug_
:
4557 /* Avoid duplicate processing of some options from
4558 compare-debug specs; just save them here. */
4559 save_switch (decoded_options
[j
].canonical_option
[0],
4560 (decoded_options
[j
].canonical_option_num_elements
4562 &decoded_options
[j
].canonical_option
[1], false, true);
4566 read_cmdline_option (&global_options
, &global_options_set
,
4567 decoded_options
+ j
, UNKNOWN_LOCATION
,
4568 CL_DRIVER
, &handlers
, global_dc
);
4574 switches
[n_switches
].part1
= 0;
4578 /* Callback for processing %D and %I specs. */
4580 struct spec_path_info
{
4585 bool separate_options
;
4589 spec_path (char *path
, void *data
)
4591 struct spec_path_info
*info
= (struct spec_path_info
*) data
;
4595 if (info
->omit_relative
&& !IS_ABSOLUTE_PATH (path
))
4598 if (info
->append_len
!= 0)
4600 len
= strlen (path
);
4601 memcpy (path
+ len
, info
->append
, info
->append_len
+ 1);
4604 if (!is_directory (path
, true))
4607 do_spec_1 (info
->option
, 1, NULL
);
4608 if (info
->separate_options
)
4609 do_spec_1 (" ", 0, NULL
);
4611 if (info
->append_len
== 0)
4613 len
= strlen (path
);
4614 save
= path
[len
- 1];
4615 if (IS_DIR_SEPARATOR (path
[len
- 1]))
4616 path
[len
- 1] = '\0';
4619 do_spec_1 (path
, 1, NULL
);
4620 do_spec_1 (" ", 0, NULL
);
4622 /* Must not damage the original path. */
4623 if (info
->append_len
== 0)
4624 path
[len
- 1] = save
;
4629 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4633 create_at_file (char **argv
)
4635 char *temp_file
= make_temp_file ("");
4636 char *at_argument
= concat ("@", temp_file
, NULL
);
4637 FILE *f
= fopen (temp_file
, "w");
4641 fatal_error ("could not open temporary response file %s",
4644 status
= writeargv (argv
, f
);
4647 fatal_error ("could not write to temporary response file %s",
4650 status
= fclose (f
);
4653 fatal_error ("could not close temporary response file %s",
4656 store_arg (at_argument
, 0, 0);
4658 record_temp_file (temp_file
, !save_temps_flag
, !save_temps_flag
);
4661 /* True if we should compile INFILE. */
4664 compile_input_file_p (struct infile
*infile
)
4666 if ((!infile
->language
) || (infile
->language
[0] != '*'))
4667 if (infile
->incompiler
== input_file_compiler
)
4672 /* Process each member of VEC as a spec. */
4675 do_specs_vec (vec
<char_p
> vec
)
4680 FOR_EACH_VEC_ELT (vec
, ix
, opt
)
4682 do_spec_1 (opt
, 1, NULL
);
4683 /* Make each accumulated option a separate argument. */
4684 do_spec_1 (" ", 0, NULL
);
4688 /* Process the sub-spec SPEC as a portion of a larger spec.
4689 This is like processing a whole spec except that we do
4690 not initialize at the beginning and we do not supply a
4691 newline by default at the end.
4692 INSWITCH nonzero means don't process %-sequences in SPEC;
4693 in this case, % is treated as an ordinary character.
4694 This is used while substituting switches.
4695 INSWITCH nonzero also causes SPC not to terminate an argument.
4697 Value is zero unless a line was finished
4698 and the command on that line reported an error. */
4701 do_spec_1 (const char *spec
, int inswitch
, const char *soft_matched_part
)
4703 const char *p
= spec
;
4708 /* If it's an empty string argument to a switch, keep it as is. */
4709 if (inswitch
&& !*p
)
4713 /* If substituting a switch, treat all chars like letters.
4714 Otherwise, NL, SPC, TAB and % are special. */
4715 switch (inswitch
? 'a' : c
)
4720 if (argbuf
.length () > 0
4721 && !strcmp (argbuf
.last (), "|"))
4723 /* A `|' before the newline means use a pipe here,
4724 but only if -pipe was specified.
4725 Otherwise, execute now and don't pass the `|' as an arg. */
4728 input_from_pipe
= 1;
4735 set_collect_gcc_options ();
4737 if (argbuf
.length () > 0)
4743 /* Reinitialize for a new command, and for a new argument. */
4746 delete_this_arg
= 0;
4747 this_is_output_file
= 0;
4748 this_is_library_file
= 0;
4749 this_is_linker_script
= 0;
4750 input_from_pipe
= 0;
4757 obstack_1grow (&obstack
, c
);
4765 /* Reinitialize for a new argument. */
4766 delete_this_arg
= 0;
4767 this_is_output_file
= 0;
4768 this_is_library_file
= 0;
4769 this_is_linker_script
= 0;
4776 fatal_error ("spec %qs invalid", spec
);
4779 if (save_temps_length
)
4780 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4782 obstack_grow (&obstack
, input_basename
, basename_length
);
4783 if (compare_debug
< 0)
4784 obstack_grow (&obstack
, ".gk", 3);
4789 if (save_temps_length
)
4790 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4792 obstack_grow (&obstack
, input_basename
, suffixed_basename_length
);
4793 if (compare_debug
< 0)
4794 obstack_grow (&obstack
, ".gk", 3);
4799 delete_this_arg
= 2;
4802 /* Dump out the directories specified with LIBRARY_PATH,
4803 followed by the absolute directories
4804 that we search for startfiles. */
4807 struct spec_path_info info
;
4810 info
.append_len
= 0;
4811 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4812 /* Used on systems which record the specified -L dirs
4813 and use them to search for dynamic linking.
4814 Relative directories always come from -B,
4815 and it is better not to use them for searching
4816 at run time. In particular, stage1 loses. */
4817 info
.omit_relative
= true;
4819 info
.omit_relative
= false;
4821 info
.separate_options
= false;
4823 for_each_path (&startfile_prefixes
, true, 0, spec_path
, &info
);
4828 /* %efoo means report an error with `foo' as error message
4829 and don't execute any more commands for this file. */
4833 while (*p
!= 0 && *p
!= '\n')
4835 buf
= (char *) alloca (p
- q
+ 1);
4836 strncpy (buf
, q
, p
- q
);
4838 error ("%s", _(buf
));
4843 /* %nfoo means report a notice with `foo' on stderr. */
4847 while (*p
!= 0 && *p
!= '\n')
4849 buf
= (char *) alloca (p
- q
+ 1);
4850 strncpy (buf
, q
, p
- q
);
4852 inform (0, "%s", _(buf
));
4862 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4863 defined, and it is not a directory, and it is
4864 writable, use it. Otherwise, treat this like any
4865 other temporary file. */
4867 if ((!save_temps_flag
)
4868 && (stat (HOST_BIT_BUCKET
, &st
) == 0) && (!S_ISDIR (st
.st_mode
))
4869 && (access (HOST_BIT_BUCKET
, W_OK
) == 0))
4871 obstack_grow (&obstack
, HOST_BIT_BUCKET
,
4872 strlen (HOST_BIT_BUCKET
));
4873 delete_this_arg
= 0;
4878 goto create_temp_file
;
4882 obstack_1grow (&obstack
, '-');
4883 delete_this_arg
= 0;
4886 /* consume suffix */
4887 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4889 if (p
[0] == '%' && p
[1] == 'O')
4894 goto create_temp_file
;
4898 /* consume suffix */
4899 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4901 if (p
[0] == '%' && p
[1] == 'O')
4906 goto create_temp_file
;
4912 struct temp_name
*t
;
4914 const char *suffix
= p
;
4915 char *saved_suffix
= NULL
;
4917 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4919 suffix_length
= p
- suffix
;
4920 if (p
[0] == '%' && p
[1] == 'O')
4923 /* We don't support extra suffix characters after %O. */
4924 if (*p
== '.' || ISALNUM ((unsigned char) *p
))
4925 fatal_error ("spec %qs has invalid %<%%0%c%>", spec
, *p
);
4926 if (suffix_length
== 0)
4927 suffix
= TARGET_OBJECT_SUFFIX
;
4931 = XNEWVEC (char, suffix_length
4932 + strlen (TARGET_OBJECT_SUFFIX
) + 1);
4933 strncpy (saved_suffix
, suffix
, suffix_length
);
4934 strcpy (saved_suffix
+ suffix_length
,
4935 TARGET_OBJECT_SUFFIX
);
4937 suffix_length
+= strlen (TARGET_OBJECT_SUFFIX
);
4940 if (compare_debug
< 0)
4942 suffix
= concat (".gk", suffix
, NULL
);
4946 /* If -save-temps=obj and -o were specified, use that for the
4948 if (save_temps_length
)
4951 temp_filename_length
4952 = save_temps_length
+ suffix_length
+ 1;
4953 tmp
= (char *) alloca (temp_filename_length
);
4954 memcpy (tmp
, save_temps_prefix
, save_temps_length
);
4955 memcpy (tmp
+ save_temps_length
, suffix
, suffix_length
);
4956 tmp
[save_temps_length
+ suffix_length
] = '\0';
4957 temp_filename
= save_string (tmp
, save_temps_length
4959 obstack_grow (&obstack
, temp_filename
,
4960 temp_filename_length
);
4962 delete_this_arg
= 0;
4966 /* If the gcc_input_filename has the same suffix specified
4967 for the %g, %u, or %U, and -save-temps is specified,
4968 we could end up using that file as an intermediate
4969 thus clobbering the user's source file (.e.g.,
4970 gcc -save-temps foo.s would clobber foo.s with the
4971 output of cpp0). So check for this condition and
4972 generate a temp file as the intermediate. */
4974 if (save_temps_flag
)
4977 temp_filename_length
= basename_length
+ suffix_length
+ 1;
4978 tmp
= (char *) alloca (temp_filename_length
);
4979 memcpy (tmp
, input_basename
, basename_length
);
4980 memcpy (tmp
+ basename_length
, suffix
, suffix_length
);
4981 tmp
[basename_length
+ suffix_length
] = '\0';
4982 temp_filename
= tmp
;
4984 if (filename_cmp (temp_filename
, gcc_input_filename
) != 0)
4986 #ifndef HOST_LACKS_INODE_NUMBERS
4987 struct stat st_temp
;
4989 /* Note, set_input() resets input_stat_set to 0. */
4990 if (input_stat_set
== 0)
4992 input_stat_set
= stat (gcc_input_filename
,
4994 if (input_stat_set
>= 0)
4998 /* If we have the stat for the gcc_input_filename
4999 and we can do the stat for the temp_filename
5000 then the they could still refer to the same
5001 file if st_dev/st_ino's are the same. */
5002 if (input_stat_set
!= 1
5003 || stat (temp_filename
, &st_temp
) < 0
5004 || input_stat
.st_dev
!= st_temp
.st_dev
5005 || input_stat
.st_ino
!= st_temp
.st_ino
)
5007 /* Just compare canonical pathnames. */
5008 char* input_realname
= lrealpath (gcc_input_filename
);
5009 char* temp_realname
= lrealpath (temp_filename
);
5010 bool files_differ
= filename_cmp (input_realname
, temp_realname
);
5011 free (input_realname
);
5012 free (temp_realname
);
5016 temp_filename
= save_string (temp_filename
,
5017 temp_filename_length
+ 1);
5018 obstack_grow (&obstack
, temp_filename
,
5019 temp_filename_length
);
5021 delete_this_arg
= 0;
5027 /* See if we already have an association of %g/%u/%U and
5029 for (t
= temp_names
; t
; t
= t
->next
)
5030 if (t
->length
== suffix_length
5031 && strncmp (t
->suffix
, suffix
, suffix_length
) == 0
5032 && t
->unique
== (c
== 'u' || c
== 'U' || c
== 'j'))
5035 /* Make a new association if needed. %u and %j
5037 if (t
== 0 || c
== 'u' || c
== 'j')
5041 t
= XNEW (struct temp_name
);
5042 t
->next
= temp_names
;
5045 t
->length
= suffix_length
;
5048 t
->suffix
= saved_suffix
;
5049 saved_suffix
= NULL
;
5052 t
->suffix
= save_string (suffix
, suffix_length
);
5053 t
->unique
= (c
== 'u' || c
== 'U' || c
== 'j');
5054 temp_filename
= make_temp_file (t
->suffix
);
5055 temp_filename_length
= strlen (temp_filename
);
5056 t
->filename
= temp_filename
;
5057 t
->filename_length
= temp_filename_length
;
5060 free (saved_suffix
);
5062 obstack_grow (&obstack
, t
->filename
, t
->filename_length
);
5063 delete_this_arg
= 1;
5071 if (at_file_supplied
)
5073 /* We are going to expand `%i' to `@FILE', where FILE
5074 is a newly-created temporary filename. The filenames
5075 that would usually be expanded in place of %o will be
5076 written to the temporary file. */
5081 for (i
= 0; i
< n_infiles
; i
++)
5082 if (compile_input_file_p (&infiles
[i
]))
5085 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
5087 /* Copy the strings over. */
5088 for (i
= 0, j
= 0; i
< n_infiles
; i
++)
5089 if (compile_input_file_p (&infiles
[i
]))
5091 argv
[j
] = CONST_CAST (char *, infiles
[i
].name
);
5092 infiles
[i
].compiled
= true;
5097 create_at_file (argv
);
5100 for (i
= 0; (int) i
< n_infiles
; i
++)
5101 if (compile_input_file_p (&infiles
[i
]))
5103 store_arg (infiles
[i
].name
, 0, 0);
5104 infiles
[i
].compiled
= true;
5109 obstack_grow (&obstack
, gcc_input_filename
,
5110 input_filename_length
);
5117 struct spec_path_info info
;
5121 do_spec_1 ("-imultilib", 1, NULL
);
5122 /* Make this a separate argument. */
5123 do_spec_1 (" ", 0, NULL
);
5124 do_spec_1 (multilib_dir
, 1, NULL
);
5125 do_spec_1 (" ", 0, NULL
);
5130 do_spec_1 ("-imultiarch", 1, NULL
);
5131 /* Make this a separate argument. */
5132 do_spec_1 (" ", 0, NULL
);
5133 do_spec_1 (multiarch_dir
, 1, NULL
);
5134 do_spec_1 (" ", 0, NULL
);
5137 if (gcc_exec_prefix
)
5139 do_spec_1 ("-iprefix", 1, NULL
);
5140 /* Make this a separate argument. */
5141 do_spec_1 (" ", 0, NULL
);
5142 do_spec_1 (gcc_exec_prefix
, 1, NULL
);
5143 do_spec_1 (" ", 0, NULL
);
5146 if (target_system_root_changed
||
5147 (target_system_root
&& target_sysroot_hdrs_suffix
))
5149 do_spec_1 ("-isysroot", 1, NULL
);
5150 /* Make this a separate argument. */
5151 do_spec_1 (" ", 0, NULL
);
5152 do_spec_1 (target_system_root
, 1, NULL
);
5153 if (target_sysroot_hdrs_suffix
)
5154 do_spec_1 (target_sysroot_hdrs_suffix
, 1, NULL
);
5155 do_spec_1 (" ", 0, NULL
);
5158 info
.option
= "-isystem";
5159 info
.append
= "include";
5160 info
.append_len
= strlen (info
.append
);
5161 info
.omit_relative
= false;
5162 info
.separate_options
= true;
5164 for_each_path (&include_prefixes
, false, info
.append_len
,
5167 info
.append
= "include-fixed";
5168 if (*sysroot_hdrs_suffix_spec
)
5169 info
.append
= concat (info
.append
, dir_separator_str
,
5170 multilib_dir
, NULL
);
5171 info
.append_len
= strlen (info
.append
);
5172 for_each_path (&include_prefixes
, false, info
.append_len
,
5179 int max
= n_infiles
;
5180 max
+= lang_specific_extra_outfiles
;
5182 if (HAVE_GNU_LD
&& at_file_supplied
)
5184 /* We are going to expand `%o' to `@FILE', where FILE
5185 is a newly-created temporary filename. The filenames
5186 that would usually be expanded in place of %o will be
5187 written to the temporary file. */
5192 /* Convert OUTFILES into a form suitable for writeargv. */
5194 /* Determine how many are non-NULL. */
5195 for (n_files
= 0, i
= 0; i
< max
; i
++)
5196 n_files
+= outfiles
[i
] != NULL
;
5198 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
5200 /* Copy the strings over. */
5201 for (i
= 0, j
= 0; i
< max
; i
++)
5204 argv
[j
] = CONST_CAST (char *, outfiles
[i
]);
5209 create_at_file (argv
);
5212 for (i
= 0; i
< max
; i
++)
5214 store_arg (outfiles
[i
], 0, 0);
5219 obstack_grow (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
5224 this_is_library_file
= 1;
5228 this_is_linker_script
= 1;
5232 outfiles
[input_file_number
] = NULL
;
5236 this_is_output_file
= 1;
5241 unsigned int cur_index
= argbuf
.length ();
5242 /* Handle the {...} following the %W. */
5244 fatal_error ("spec %qs has invalid %<%%W%c%>", spec
, *p
);
5245 p
= handle_braces (p
+ 1);
5249 /* If any args were output, mark the last one for deletion
5251 if (argbuf
.length () != cur_index
)
5252 record_temp_file (argbuf
.last (), 0, 1);
5256 /* %x{OPTION} records OPTION for %X to output. */
5264 /* Skip past the option value and make a copy. */
5266 fatal_error ("spec %qs has invalid %<%%x%c%>", spec
, *p
);
5269 string
= save_string (p1
+ 1, p
- p1
- 2);
5271 /* See if we already recorded this option. */
5272 FOR_EACH_VEC_ELT (linker_options
, ix
, opt
)
5273 if (! strcmp (string
, opt
))
5279 /* This option is new; add it. */
5280 add_linker_option (string
, strlen (string
));
5285 /* Dump out the options accumulated previously using %x. */
5287 do_specs_vec (linker_options
);
5290 /* Dump out the options accumulated previously using -Wa,. */
5292 do_specs_vec (assembler_options
);
5295 /* Dump out the options accumulated previously using -Wp,. */
5297 do_specs_vec (preprocessor_options
);
5300 /* Here are digits and numbers that just process
5301 a certain constant string as a spec. */
5304 value
= do_spec_1 (cc1_spec
, 0, NULL
);
5310 value
= do_spec_1 (cc1plus_spec
, 0, NULL
);
5316 value
= do_spec_1 (asm_spec
, 0, NULL
);
5322 value
= do_spec_1 (asm_final_spec
, 0, NULL
);
5329 const char *const spec
5330 = (input_file_compiler
->cpp_spec
5331 ? input_file_compiler
->cpp_spec
5333 value
= do_spec_1 (spec
, 0, NULL
);
5340 value
= do_spec_1 (endfile_spec
, 0, NULL
);
5346 value
= do_spec_1 (link_spec
, 0, NULL
);
5352 value
= do_spec_1 (lib_spec
, 0, NULL
);
5358 if (multilib_os_dir
== NULL
)
5359 obstack_1grow (&obstack
, '.');
5361 obstack_grow (&obstack
, multilib_os_dir
,
5362 strlen (multilib_os_dir
));
5366 value
= do_spec_1 (libgcc_spec
, 0, NULL
);
5372 /* We assume there is a directory
5373 separator at the end of this string. */
5374 if (target_system_root
)
5376 obstack_grow (&obstack
, target_system_root
,
5377 strlen (target_system_root
));
5378 if (target_sysroot_suffix
)
5379 obstack_grow (&obstack
, target_sysroot_suffix
,
5380 strlen (target_sysroot_suffix
));
5385 value
= do_spec_1 (startfile_spec
, 0, NULL
);
5390 /* Here we define characters other than letters and digits. */
5393 p
= handle_braces (p
);
5399 p
= handle_spec_function (p
, NULL
);
5405 obstack_1grow (&obstack
, '%');
5412 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '%')
5414 suffix_subst
= save_string (p
- 1, len
+ 1);
5419 /* Henceforth ignore the option(s) matching the pattern
5425 int have_wildcard
= 0;
5430 switch_option
= SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
;
5432 switch_option
= SWITCH_IGNORE
;
5434 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '\t')
5437 if (p
[len
-1] == '*')
5440 for (i
= 0; i
< n_switches
; i
++)
5441 if (!strncmp (switches
[i
].part1
, p
, len
- have_wildcard
)
5442 && (have_wildcard
|| switches
[i
].part1
[len
] == '\0'))
5444 switches
[i
].live_cond
|= switch_option
;
5445 /* User switch be validated from validate_all_switches.
5446 when the definition is seen from the spec file.
5447 If not defined anywhere, will be rejected. */
5448 if (switches
[i
].known
)
5449 switches
[i
].validated
= true;
5457 if (soft_matched_part
)
5459 if (soft_matched_part
[0])
5460 do_spec_1 (soft_matched_part
, 1, NULL
);
5461 /* Only insert a space after the substitution if it is at the
5462 end of the current sequence. So if:
5464 "%{foo=*:bar%*}%{foo=*:one%*two}"
5466 matches -foo=hello then it will produce:
5468 barhello onehellotwo
5470 if (*p
== 0 || *p
== '}')
5471 do_spec_1 (" ", 0, NULL
);
5474 /* Catch the case where a spec string contains something like
5475 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5476 hand side of the :. */
5477 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5480 /* Process a string found as the value of a spec given by name.
5481 This feature allows individual machine descriptions
5482 to add and use their own specs. */
5485 const char *name
= p
;
5486 struct spec_list
*sl
;
5489 /* The string after the S/P is the name of a spec that is to be
5491 while (*p
&& *p
!= ')')
5494 /* See if it's in the list. */
5495 for (len
= p
- name
, sl
= specs
; sl
; sl
= sl
->next
)
5496 if (sl
->name_len
== len
&& !strncmp (sl
->name
, name
, len
))
5498 name
= *(sl
->ptr_spec
);
5500 fnotice (stderr
, "Processing spec (%s), which is '%s'\n",
5508 value
= do_spec_1 (name
, 0, NULL
);
5513 /* Discard the closing paren. */
5520 error ("spec failure: unrecognized spec option %qc", c
);
5526 /* Backslash: treat next character as ordinary. */
5531 /* Ordinary character: put it into the current argument. */
5532 obstack_1grow (&obstack
, c
);
5536 /* End of string. If we are processing a spec function, we need to
5537 end any pending argument. */
5538 if (processing_spec_function
)
5544 /* Look up a spec function. */
5546 static const struct spec_function
*
5547 lookup_spec_function (const char *name
)
5549 const struct spec_function
*sf
;
5551 for (sf
= static_spec_functions
; sf
->name
!= NULL
; sf
++)
5552 if (strcmp (sf
->name
, name
) == 0)
5558 /* Evaluate a spec function. */
5561 eval_spec_function (const char *func
, const char *args
)
5563 const struct spec_function
*sf
;
5564 const char *funcval
;
5566 /* Saved spec processing context. */
5567 vec
<const_char_p
> save_argbuf
;
5570 int save_delete_this_arg
;
5571 int save_this_is_output_file
;
5572 int save_this_is_library_file
;
5573 int save_input_from_pipe
;
5574 int save_this_is_linker_script
;
5575 const char *save_suffix_subst
;
5577 int save_growing_size
;
5578 void *save_growing_value
= NULL
;
5580 sf
= lookup_spec_function (func
);
5582 fatal_error ("unknown spec function %qs", func
);
5584 /* Push the spec processing context. */
5585 save_argbuf
= argbuf
;
5587 save_arg_going
= arg_going
;
5588 save_delete_this_arg
= delete_this_arg
;
5589 save_this_is_output_file
= this_is_output_file
;
5590 save_this_is_library_file
= this_is_library_file
;
5591 save_this_is_linker_script
= this_is_linker_script
;
5592 save_input_from_pipe
= input_from_pipe
;
5593 save_suffix_subst
= suffix_subst
;
5595 /* If we have some object growing now, finalize it so the args and function
5596 eval proceed from a cleared context. This is needed to prevent the first
5597 constructed arg from mistakenly including the growing value. We'll push
5598 this value back on the obstack once the function evaluation is done, to
5599 restore a consistent processing context for our caller. This is fine as
5600 the address of growing objects isn't guaranteed to remain stable until
5601 they are finalized, and we expect this situation to be rare enough for
5602 the extra copy not to be an issue. */
5603 save_growing_size
= obstack_object_size (&obstack
);
5604 if (save_growing_size
> 0)
5605 save_growing_value
= obstack_finish (&obstack
);
5607 /* Create a new spec processing context, and build the function
5611 if (do_spec_2 (args
) < 0)
5612 fatal_error ("error in args to spec function %qs", func
);
5614 /* argbuf_index is an index for the next argument to be inserted, and
5615 so contains the count of the args already inserted. */
5617 funcval
= (*sf
->func
) (argbuf
.length (),
5620 /* Pop the spec processing context. */
5622 argbuf
= save_argbuf
;
5624 arg_going
= save_arg_going
;
5625 delete_this_arg
= save_delete_this_arg
;
5626 this_is_output_file
= save_this_is_output_file
;
5627 this_is_library_file
= save_this_is_library_file
;
5628 this_is_linker_script
= save_this_is_linker_script
;
5629 input_from_pipe
= save_input_from_pipe
;
5630 suffix_subst
= save_suffix_subst
;
5632 if (save_growing_size
> 0)
5633 obstack_grow (&obstack
, save_growing_value
, save_growing_size
);
5638 /* Handle a spec function call of the form:
5642 ARGS is processed as a spec in a separate context and split into an
5643 argument vector in the normal fashion. The function returns a string
5644 containing a spec which we then process in the caller's context, or
5645 NULL if no processing is required.
5647 If RETVAL_NONNULL is not NULL, then store a bool whether function
5648 returned non-NULL. */
5651 handle_spec_function (const char *p
, bool *retval_nonnull
)
5654 const char *endp
, *funcval
;
5657 processing_spec_function
++;
5659 /* Get the function name. */
5660 for (endp
= p
; *endp
!= '\0'; endp
++)
5662 if (*endp
== '(') /* ) */
5664 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5665 if (!ISALNUM (*endp
) && !(*endp
== '-' || *endp
== '_'))
5666 fatal_error ("malformed spec function name");
5668 if (*endp
!= '(') /* ) */
5669 fatal_error ("no arguments for spec function");
5670 func
= save_string (p
, endp
- p
);
5673 /* Get the arguments. */
5674 for (count
= 0; *endp
!= '\0'; endp
++)
5683 else if (*endp
== '(') /* ) */
5688 fatal_error ("malformed spec function arguments");
5689 args
= save_string (p
, endp
- p
);
5692 /* p now points to just past the end of the spec function expression. */
5694 funcval
= eval_spec_function (func
, args
);
5695 if (funcval
!= NULL
&& do_spec_1 (funcval
, 0, NULL
) < 0)
5698 *retval_nonnull
= funcval
!= NULL
;
5703 processing_spec_function
--;
5708 /* Inline subroutine of handle_braces. Returns true if the current
5709 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5711 input_suffix_matches (const char *atom
, const char *end_atom
)
5713 return (input_suffix
5714 && !strncmp (input_suffix
, atom
, end_atom
- atom
)
5715 && input_suffix
[end_atom
- atom
] == '\0');
5718 /* Subroutine of handle_braces. Returns true if the current
5719 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5721 input_spec_matches (const char *atom
, const char *end_atom
)
5723 return (input_file_compiler
5724 && input_file_compiler
->suffix
5725 && input_file_compiler
->suffix
[0] != '\0'
5726 && !strncmp (input_file_compiler
->suffix
+ 1, atom
,
5728 && input_file_compiler
->suffix
[end_atom
- atom
+ 1] == '\0');
5731 /* Subroutine of handle_braces. Returns true if a switch
5732 matching the atom bracketed by ATOM and END_ATOM appeared on the
5735 switch_matches (const char *atom
, const char *end_atom
, int starred
)
5738 int len
= end_atom
- atom
;
5739 int plen
= starred
? len
: -1;
5741 for (i
= 0; i
< n_switches
; i
++)
5742 if (!strncmp (switches
[i
].part1
, atom
, len
)
5743 && (starred
|| switches
[i
].part1
[len
] == '\0')
5744 && check_live_switch (i
, plen
))
5747 /* Check if a switch with separated form matching the atom.
5748 We check -D and -U switches. */
5749 else if (switches
[i
].args
!= 0)
5751 if ((*switches
[i
].part1
== 'D' || *switches
[i
].part1
== 'U')
5752 && *switches
[i
].part1
== atom
[0])
5754 if (!strncmp (switches
[i
].args
[0], &atom
[1], len
- 1)
5755 && (starred
|| (switches
[i
].part1
[1] == '\0'
5756 && switches
[i
].args
[0][len
- 1] == '\0'))
5757 && check_live_switch (i
, (starred
? 1 : -1)))
5765 /* Inline subroutine of handle_braces. Mark all of the switches which
5766 match ATOM (extends to END_ATOM; STARRED indicates whether there
5767 was a star after the atom) for later processing. */
5769 mark_matching_switches (const char *atom
, const char *end_atom
, int starred
)
5772 int len
= end_atom
- atom
;
5773 int plen
= starred
? len
: -1;
5775 for (i
= 0; i
< n_switches
; i
++)
5776 if (!strncmp (switches
[i
].part1
, atom
, len
)
5777 && (starred
|| switches
[i
].part1
[len
] == '\0')
5778 && check_live_switch (i
, plen
))
5779 switches
[i
].ordering
= 1;
5782 /* Inline subroutine of handle_braces. Process all the currently
5783 marked switches through give_switch, and clear the marks. */
5785 process_marked_switches (void)
5789 for (i
= 0; i
< n_switches
; i
++)
5790 if (switches
[i
].ordering
== 1)
5792 switches
[i
].ordering
= 0;
5797 /* Handle a %{ ... } construct. P points just inside the leading {.
5798 Returns a pointer one past the end of the brace block, or 0
5799 if we call do_spec_1 and that returns -1. */
5802 handle_braces (const char *p
)
5804 const char *atom
, *end_atom
;
5805 const char *d_atom
= NULL
, *d_end_atom
= NULL
;
5806 const char *orig
= p
;
5814 bool a_must_be_last
= false;
5815 bool ordered_set
= false;
5816 bool disjunct_set
= false;
5817 bool disj_matched
= false;
5818 bool disj_starred
= true;
5819 bool n_way_choice
= false;
5820 bool n_way_matched
= false;
5822 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5829 /* Scan one "atom" (S in the description above of %{}, possibly
5830 with '!', '.', '@', ',', or '*' modifiers). */
5832 a_is_suffix
= false;
5833 a_is_starred
= false;
5834 a_is_negated
= false;
5835 a_is_spectype
= false;
5839 p
++, a_is_negated
= true;
5842 if (*p
== '%' && p
[1] == ':')
5846 p
= handle_spec_function (p
+ 2, &a_matched
);
5851 p
++, a_is_suffix
= true;
5853 p
++, a_is_spectype
= true;
5856 while (ISIDNUM (*p
) || *p
== '-' || *p
== '+' || *p
== '='
5857 || *p
== ',' || *p
== '.' || *p
== '@')
5862 p
++, a_is_starred
= 1;
5869 /* Substitute the switch(es) indicated by the current atom. */
5871 if (disjunct_set
|| n_way_choice
|| a_is_negated
|| a_is_suffix
5872 || a_is_spectype
|| atom
== end_atom
)
5875 mark_matching_switches (atom
, end_atom
, a_is_starred
);
5878 process_marked_switches ();
5882 /* Substitute some text if the current atom appears as a switch
5884 disjunct_set
= true;
5888 if (atom
&& atom
== end_atom
)
5890 if (!n_way_choice
|| disj_matched
|| *p
== '|'
5891 || a_is_negated
|| a_is_suffix
|| a_is_spectype
5895 /* An empty term may appear as the last choice of an
5896 N-way choice set; it means "otherwise". */
5897 a_must_be_last
= true;
5898 disj_matched
= !n_way_matched
;
5899 disj_starred
= false;
5903 if ((a_is_suffix
|| a_is_spectype
) && a_is_starred
)
5907 disj_starred
= false;
5909 /* Don't bother testing this atom if we already have a
5911 if (!disj_matched
&& !n_way_matched
)
5914 /* a_matched is already set by handle_spec_function. */;
5915 else if (a_is_suffix
)
5916 a_matched
= input_suffix_matches (atom
, end_atom
);
5917 else if (a_is_spectype
)
5918 a_matched
= input_spec_matches (atom
, end_atom
);
5920 a_matched
= switch_matches (atom
, end_atom
, a_is_starred
);
5922 if (a_matched
!= a_is_negated
)
5924 disj_matched
= true;
5926 d_end_atom
= end_atom
;
5933 /* Found the body, that is, the text to substitute if the
5934 current disjunction matches. */
5935 p
= process_brace_body (p
+ 1, d_atom
, d_end_atom
, disj_starred
,
5936 disj_matched
&& !n_way_matched
);
5940 /* If we have an N-way choice, reset state for the next
5944 n_way_choice
= true;
5945 n_way_matched
|= disj_matched
;
5946 disj_matched
= false;
5947 disj_starred
= true;
5948 d_atom
= d_end_atom
= NULL
;
5957 while (*p
++ != '}');
5962 fatal_error ("braced spec %qs is invalid at %qc", orig
, *p
);
5967 /* Subroutine of handle_braces. Scan and process a brace substitution body
5968 (X in the description of %{} syntax). P points one past the colon;
5969 ATOM and END_ATOM bracket the first atom which was found to be true
5970 (present) in the current disjunction; STARRED indicates whether all
5971 the atoms in the current disjunction were starred (for syntax validation);
5972 MATCHED indicates whether the disjunction matched or not, and therefore
5973 whether or not the body is to be processed through do_spec_1 or just
5974 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5978 process_brace_body (const char *p
, const char *atom
, const char *end_atom
,
5979 int starred
, int matched
)
5981 const char *body
, *end_body
;
5982 unsigned int nesting_level
;
5983 bool have_subst
= false;
5985 /* Locate the closing } or ;, honoring nested braces.
5986 Trim trailing whitespace. */
5995 if (!--nesting_level
)
5998 else if (*p
== ';' && nesting_level
== 1)
6000 else if (*p
== '%' && p
[1] == '*' && nesting_level
== 1)
6002 else if (*p
== '\0')
6008 while (end_body
[-1] == ' ' || end_body
[-1] == '\t')
6011 if (have_subst
&& !starred
)
6016 /* Copy the substitution body to permanent storage and execute it.
6017 If have_subst is false, this is a simple matter of running the
6018 body through do_spec_1... */
6019 char *string
= save_string (body
, end_body
- body
);
6022 if (do_spec_1 (string
, 0, NULL
) < 0)
6027 /* ... but if have_subst is true, we have to process the
6028 body once for each matching switch, with %* set to the
6029 variant part of the switch. */
6030 unsigned int hard_match_len
= end_atom
- atom
;
6033 for (i
= 0; i
< n_switches
; i
++)
6034 if (!strncmp (switches
[i
].part1
, atom
, hard_match_len
)
6035 && check_live_switch (i
, hard_match_len
))
6037 if (do_spec_1 (string
, 0,
6038 &switches
[i
].part1
[hard_match_len
]) < 0)
6040 /* Pass any arguments this switch has. */
6042 suffix_subst
= NULL
;
6050 fatal_error ("braced spec body %qs is invalid", body
);
6053 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
6054 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
6055 spec, or -1 if either exact match or %* is used.
6057 A -O switch is obsoleted by a later -O switch. A -f, -g, -m, or -W switch
6058 whose value does not begin with "no-" is obsoleted by the same value
6059 with the "no-", similarly for a switch with the "no-" prefix. */
6062 check_live_switch (int switchnum
, int prefix_length
)
6064 const char *name
= switches
[switchnum
].part1
;
6067 /* If we already processed this switch and determined if it was
6068 live or not, return our past determination. */
6069 if (switches
[switchnum
].live_cond
!= 0)
6070 return ((switches
[switchnum
].live_cond
& SWITCH_LIVE
) != 0
6071 && (switches
[switchnum
].live_cond
& SWITCH_FALSE
) == 0
6072 && (switches
[switchnum
].live_cond
& SWITCH_IGNORE_PERMANENTLY
)
6075 /* In the common case of {<at-most-one-letter>*}, a negating
6076 switch would always match, so ignore that case. We will just
6077 send the conflicting switches to the compiler phase. */
6078 if (prefix_length
>= 0 && prefix_length
<= 1)
6081 /* Now search for duplicate in a manner that depends on the name. */
6085 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
6086 if (switches
[i
].part1
[0] == 'O')
6088 switches
[switchnum
].validated
= true;
6089 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
6094 case 'W': case 'f': case 'm': case 'g':
6095 if (! strncmp (name
+ 1, "no-", 3))
6097 /* We have Xno-YYY, search for XYYY. */
6098 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
6099 if (switches
[i
].part1
[0] == name
[0]
6100 && ! strcmp (&switches
[i
].part1
[1], &name
[4]))
6102 /* --specs are validated with the validate_switches mechanism. */
6103 if (switches
[switchnum
].known
)
6104 switches
[switchnum
].validated
= true;
6105 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
6111 /* We have XYYY, search for Xno-YYY. */
6112 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
6113 if (switches
[i
].part1
[0] == name
[0]
6114 && switches
[i
].part1
[1] == 'n'
6115 && switches
[i
].part1
[2] == 'o'
6116 && switches
[i
].part1
[3] == '-'
6117 && !strcmp (&switches
[i
].part1
[4], &name
[1]))
6119 /* --specs are validated with the validate_switches mechanism. */
6120 if (switches
[switchnum
].known
)
6121 switches
[switchnum
].validated
= true;
6122 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
6129 /* Otherwise the switch is live. */
6130 switches
[switchnum
].live_cond
|= SWITCH_LIVE
;
6134 /* Pass a switch to the current accumulating command
6135 in the same form that we received it.
6136 SWITCHNUM identifies the switch; it is an index into
6137 the vector of switches gcc received, which is `switches'.
6138 This cannot fail since it never finishes a command line.
6140 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
6143 give_switch (int switchnum
, int omit_first_word
)
6145 if ((switches
[switchnum
].live_cond
& SWITCH_IGNORE
) != 0)
6148 if (!omit_first_word
)
6150 do_spec_1 ("-", 0, NULL
);
6151 do_spec_1 (switches
[switchnum
].part1
, 1, NULL
);
6154 if (switches
[switchnum
].args
!= 0)
6157 for (p
= switches
[switchnum
].args
; *p
; p
++)
6159 const char *arg
= *p
;
6161 do_spec_1 (" ", 0, NULL
);
6164 unsigned length
= strlen (arg
);
6167 while (length
-- && !IS_DIR_SEPARATOR (arg
[length
]))
6168 if (arg
[length
] == '.')
6170 (CONST_CAST (char *, arg
))[length
] = 0;
6174 do_spec_1 (arg
, 1, NULL
);
6176 (CONST_CAST (char *, arg
))[length
] = '.';
6177 do_spec_1 (suffix_subst
, 1, NULL
);
6180 do_spec_1 (arg
, 1, NULL
);
6184 do_spec_1 (" ", 0, NULL
);
6185 switches
[switchnum
].validated
= true;
6188 /* Search for a file named NAME trying various prefixes including the
6189 user's -B prefix and some standard ones.
6190 Return the absolute file name found. If nothing is found, return NAME. */
6193 find_file (const char *name
)
6195 char *newname
= find_a_file (&startfile_prefixes
, name
, R_OK
, true);
6196 return newname
? newname
: name
;
6199 /* Determine whether a directory exists. If LINKER, return 0 for
6200 certain fixed names not needed by the linker. */
6203 is_directory (const char *path1
, bool linker
)
6210 /* Ensure the string ends with "/.". The resulting path will be a
6211 directory even if the given path is a symbolic link. */
6212 len1
= strlen (path1
);
6213 path
= (char *) alloca (3 + len1
);
6214 memcpy (path
, path1
, len1
);
6216 if (!IS_DIR_SEPARATOR (cp
[-1]))
6217 *cp
++ = DIR_SEPARATOR
;
6221 /* Exclude directories that the linker is known to search. */
6223 && IS_DIR_SEPARATOR (path
[0])
6225 && filename_ncmp (path
+ 1, "lib", 3) == 0)
6227 && filename_ncmp (path
+ 1, "usr", 3) == 0
6228 && IS_DIR_SEPARATOR (path
[4])
6229 && filename_ncmp (path
+ 5, "lib", 3) == 0)))
6232 return (stat (path
, &st
) >= 0 && S_ISDIR (st
.st_mode
));
6235 /* Set up the various global variables to indicate that we're processing
6236 the input file named FILENAME. */
6239 set_input (const char *filename
)
6243 gcc_input_filename
= filename
;
6244 input_filename_length
= strlen (gcc_input_filename
);
6245 input_basename
= lbasename (gcc_input_filename
);
6247 /* Find a suffix starting with the last period,
6248 and set basename_length to exclude that suffix. */
6249 basename_length
= strlen (input_basename
);
6250 suffixed_basename_length
= basename_length
;
6251 p
= input_basename
+ basename_length
;
6252 while (p
!= input_basename
&& *p
!= '.')
6254 if (*p
== '.' && p
!= input_basename
)
6256 basename_length
= p
- input_basename
;
6257 input_suffix
= p
+ 1;
6262 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
6263 we will need to do a stat on the gcc_input_filename. The
6264 INPUT_STAT_SET signals that the stat is needed. */
6268 /* On fatal signals, delete all the temporary files. */
6271 fatal_signal (int signum
)
6273 signal (signum
, SIG_DFL
);
6274 delete_failure_queue ();
6275 delete_temp_files ();
6276 /* Get the same signal again, this time not handled,
6277 so its normal effect occurs. */
6278 kill (getpid (), signum
);
6281 /* Compare the contents of the two files named CMPFILE[0] and
6282 CMPFILE[1]. Return zero if they're identical, nonzero
6286 compare_files (char *cmpfile
[])
6289 FILE *temp
[2] = { NULL
, NULL
};
6295 void *map
[2] = { NULL
, NULL
};
6297 for (i
= 0; i
< 2; i
++)
6301 if (stat (cmpfile
[i
], &st
) < 0 || !S_ISREG (st
.st_mode
))
6303 error ("%s: could not determine length of compare-debug file %s",
6304 gcc_input_filename
, cmpfile
[i
]);
6309 length
[i
] = st
.st_size
;
6312 if (!ret
&& length
[0] != length
[1])
6314 error ("%s: -fcompare-debug failure (length)", gcc_input_filename
);
6319 for (i
= 0; i
< 2; i
++)
6321 int fd
= open (cmpfile
[i
], O_RDONLY
);
6324 error ("%s: could not open compare-debug file %s",
6325 gcc_input_filename
, cmpfile
[i
]);
6330 map
[i
] = mmap (NULL
, length
[i
], PROT_READ
, MAP_PRIVATE
, fd
, 0);
6333 if (map
[i
] == (void *) MAP_FAILED
)
6342 if (memcmp (map
[0], map
[1], length
[0]) != 0)
6344 error ("%s: -fcompare-debug failure", gcc_input_filename
);
6349 for (i
= 0; i
< 2; i
++)
6351 munmap ((caddr_t
) map
[i
], length
[i
]);
6360 for (i
= 0; i
< 2; i
++)
6362 temp
[i
] = fopen (cmpfile
[i
], "r");
6365 error ("%s: could not open compare-debug file %s",
6366 gcc_input_filename
, cmpfile
[i
]);
6372 if (!ret
&& temp
[0] && temp
[1])
6376 c0
= fgetc (temp
[0]);
6377 c1
= fgetc (temp
[1]);
6381 error ("%s: -fcompare-debug failure",
6382 gcc_input_filename
);
6391 for (i
= 1; i
>= 0; i
--)
6400 extern int main (int, char **);
6403 main (int argc
, char **argv
)
6407 int linker_was_run
= 0;
6408 int lang_n_infiles
= 0;
6409 int num_linker_inputs
= 0;
6410 char *explicit_link_files
;
6412 char *lto_wrapper_file
;
6414 struct user_specs
*uptr
;
6415 char **old_argv
= argv
;
6416 struct cl_decoded_option
*decoded_options
;
6417 unsigned int decoded_options_count
;
6419 p
= argv
[0] + strlen (argv
[0]);
6420 while (p
!= argv
[0] && !IS_DIR_SEPARATOR (p
[-1]))
6424 xmalloc_set_program_name (progname
);
6426 expandargv (&argc
, &argv
);
6428 /* Determine if any expansions were made. */
6429 if (argv
!= old_argv
)
6430 at_file_supplied
= true;
6432 /* Register the language-independent parameters. */
6433 global_init_params ();
6436 init_options_struct (&global_options
, &global_options_set
);
6438 decode_cmdline_options_to_array (argc
, CONST_CAST2 (const char **, char **,
6441 &decoded_options
, &decoded_options_count
);
6443 /* Unlock the stdio streams. */
6444 unlock_std_streams ();
6446 gcc_init_libintl ();
6448 diagnostic_initialize (global_dc
, 0);
6450 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6451 /* Perform host dependent initialization when needed. */
6452 GCC_DRIVER_HOST_INITIALIZATION
;
6455 if (atexit (delete_temp_files
) != 0)
6456 fatal_error ("atexit failed");
6458 if (signal (SIGINT
, SIG_IGN
) != SIG_IGN
)
6459 signal (SIGINT
, fatal_signal
);
6461 if (signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
6462 signal (SIGHUP
, fatal_signal
);
6464 if (signal (SIGTERM
, SIG_IGN
) != SIG_IGN
)
6465 signal (SIGTERM
, fatal_signal
);
6467 if (signal (SIGPIPE
, SIG_IGN
) != SIG_IGN
)
6468 signal (SIGPIPE
, fatal_signal
);
6471 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6472 receive the signal. A different setting is inheritable */
6473 signal (SIGCHLD
, SIG_DFL
);
6476 /* Parsing and gimplification sometimes need quite large stack.
6477 Increase stack size limits if possible. */
6478 stack_limit_increase (64 * 1024 * 1024);
6480 /* Allocate the argument vector. */
6483 obstack_init (&obstack
);
6485 /* Build multilib_select, et. al from the separate lines that make up each
6486 multilib selection. */
6488 const char *const *q
= multilib_raw
;
6491 obstack_init (&multilib_obstack
);
6492 while ((p
= *q
++) != (char *) 0)
6493 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6495 obstack_1grow (&multilib_obstack
, 0);
6496 multilib_select
= XOBFINISH (&multilib_obstack
, const char *);
6498 q
= multilib_matches_raw
;
6499 while ((p
= *q
++) != (char *) 0)
6500 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6502 obstack_1grow (&multilib_obstack
, 0);
6503 multilib_matches
= XOBFINISH (&multilib_obstack
, const char *);
6505 q
= multilib_exclusions_raw
;
6506 while ((p
= *q
++) != (char *) 0)
6507 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6509 obstack_1grow (&multilib_obstack
, 0);
6510 multilib_exclusions
= XOBFINISH (&multilib_obstack
, const char *);
6512 q
= multilib_reuse_raw
;
6513 while ((p
= *q
++) != (char *) 0)
6514 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6516 obstack_1grow (&multilib_obstack
, 0);
6517 multilib_reuse
= XOBFINISH (&multilib_obstack
, const char *);
6520 for (i
= 0; i
< ARRAY_SIZE (multilib_defaults_raw
); i
++)
6523 obstack_1grow (&multilib_obstack
, ' ');
6524 obstack_grow (&multilib_obstack
,
6525 multilib_defaults_raw
[i
],
6526 strlen (multilib_defaults_raw
[i
]));
6530 obstack_1grow (&multilib_obstack
, 0);
6531 multilib_defaults
= XOBFINISH (&multilib_obstack
, const char *);
6534 #ifdef INIT_ENVIRONMENT
6535 /* Set up any other necessary machine specific environment variables. */
6536 xputenv (INIT_ENVIRONMENT
);
6539 /* Make a table of what switches there are (switches, n_switches).
6540 Make a table of specified input files (infiles, n_infiles).
6541 Decode switches that are handled locally. */
6543 process_command (decoded_options_count
, decoded_options
);
6545 /* Initialize the vector of specs to just the default.
6546 This means one element containing 0s, as a terminator. */
6548 compilers
= XNEWVAR (struct compiler
, sizeof default_compilers
);
6549 memcpy (compilers
, default_compilers
, sizeof default_compilers
);
6550 n_compilers
= n_default_compilers
;
6552 /* Read specs from a file if there is one. */
6554 machine_suffix
= concat (spec_machine
, dir_separator_str
,
6555 spec_version
, dir_separator_str
, NULL
);
6556 just_machine_suffix
= concat (spec_machine
, dir_separator_str
, NULL
);
6558 specs_file
= find_a_file (&startfile_prefixes
, "specs", R_OK
, true);
6559 /* Read the specs file unless it is a default one. */
6560 if (specs_file
!= 0 && strcmp (specs_file
, "specs"))
6561 read_specs (specs_file
, true, false);
6565 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6566 for any override of as, ld and libraries. */
6567 specs_file
= (char *) alloca (strlen (standard_exec_prefix
)
6568 + strlen (just_machine_suffix
) + sizeof ("specs"));
6570 strcpy (specs_file
, standard_exec_prefix
);
6571 strcat (specs_file
, just_machine_suffix
);
6572 strcat (specs_file
, "specs");
6573 if (access (specs_file
, R_OK
) == 0)
6574 read_specs (specs_file
, true, false);
6576 /* Process any configure-time defaults specified for the command line
6577 options, via OPTION_DEFAULT_SPECS. */
6578 for (i
= 0; i
< ARRAY_SIZE (option_default_specs
); i
++)
6579 do_option_spec (option_default_specs
[i
].name
,
6580 option_default_specs
[i
].spec
);
6582 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6583 of the command line. */
6585 for (i
= 0; i
< ARRAY_SIZE (driver_self_specs
); i
++)
6586 do_self_spec (driver_self_specs
[i
]);
6588 /* If not cross-compiling, look for executables in the standard
6590 if (*cross_compile
== '0')
6592 if (*md_exec_prefix
)
6594 add_prefix (&exec_prefixes
, md_exec_prefix
, "GCC",
6595 PREFIX_PRIORITY_LAST
, 0, 0);
6599 /* Process sysroot_suffix_spec. */
6600 if (*sysroot_suffix_spec
!= 0
6601 && !no_sysroot_suffix
6602 && do_spec_2 (sysroot_suffix_spec
) == 0)
6604 if (argbuf
.length () > 1)
6605 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6606 else if (argbuf
.length () == 1)
6607 target_sysroot_suffix
= xstrdup (argbuf
.last ());
6610 #ifdef HAVE_LD_SYSROOT
6611 /* Pass the --sysroot option to the linker, if it supports that. If
6612 there is a sysroot_suffix_spec, it has already been processed by
6613 this point, so target_system_root really is the system root we
6615 if (target_system_root
)
6617 obstack_grow (&obstack
, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6618 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
6619 set_spec ("link", XOBFINISH (&obstack
, const char *), false);
6623 /* Process sysroot_hdrs_suffix_spec. */
6624 if (*sysroot_hdrs_suffix_spec
!= 0
6625 && !no_sysroot_suffix
6626 && do_spec_2 (sysroot_hdrs_suffix_spec
) == 0)
6628 if (argbuf
.length () > 1)
6629 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6630 else if (argbuf
.length () == 1)
6631 target_sysroot_hdrs_suffix
= xstrdup (argbuf
.last ());
6634 /* Look for startfiles in the standard places. */
6635 if (*startfile_prefix_spec
!= 0
6636 && do_spec_2 (startfile_prefix_spec
) == 0
6637 && do_spec_1 (" ", 0, NULL
) == 0)
6641 FOR_EACH_VEC_ELT (argbuf
, ndx
, arg
)
6642 add_sysrooted_prefix (&startfile_prefixes
, arg
, "BINUTILS",
6643 PREFIX_PRIORITY_LAST
, 0, 1);
6645 /* We should eventually get rid of all these and stick to
6646 startfile_prefix_spec exclusively. */
6647 else if (*cross_compile
== '0' || target_system_root
)
6649 if (*md_startfile_prefix
)
6650 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix
,
6651 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
6653 if (*md_startfile_prefix_1
)
6654 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix_1
,
6655 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
6657 /* If standard_startfile_prefix is relative, base it on
6658 standard_exec_prefix. This lets us move the installed tree
6659 as a unit. If GCC_EXEC_PREFIX is defined, base
6660 standard_startfile_prefix on that as well.
6662 If the prefix is relative, only search it for native compilers;
6663 otherwise we will search a directory containing host libraries. */
6664 if (IS_ABSOLUTE_PATH (standard_startfile_prefix
))
6665 add_sysrooted_prefix (&startfile_prefixes
,
6666 standard_startfile_prefix
, "BINUTILS",
6667 PREFIX_PRIORITY_LAST
, 0, 1);
6668 else if (*cross_compile
== '0')
6670 add_prefix (&startfile_prefixes
,
6671 concat (gcc_exec_prefix
6672 ? gcc_exec_prefix
: standard_exec_prefix
,
6674 standard_startfile_prefix
, NULL
),
6675 NULL
, PREFIX_PRIORITY_LAST
, 0, 1);
6678 /* Sysrooted prefixes are relocated because target_system_root is
6679 also relocated by gcc_exec_prefix. */
6680 if (*standard_startfile_prefix_1
)
6681 add_sysrooted_prefix (&startfile_prefixes
,
6682 standard_startfile_prefix_1
, "BINUTILS",
6683 PREFIX_PRIORITY_LAST
, 0, 1);
6684 if (*standard_startfile_prefix_2
)
6685 add_sysrooted_prefix (&startfile_prefixes
,
6686 standard_startfile_prefix_2
, "BINUTILS",
6687 PREFIX_PRIORITY_LAST
, 0, 1);
6690 /* Process any user specified specs in the order given on the command
6692 for (uptr
= user_specs_head
; uptr
; uptr
= uptr
->next
)
6694 char *filename
= find_a_file (&startfile_prefixes
, uptr
->filename
,
6696 read_specs (filename
? filename
: uptr
->filename
, false, true);
6699 /* Process any user self specs. */
6701 struct spec_list
*sl
;
6702 for (sl
= specs
; sl
; sl
= sl
->next
)
6703 if (sl
->name_len
== sizeof "self_spec" - 1
6704 && !strcmp (sl
->name
, "self_spec"))
6705 do_self_spec (*sl
->ptr_spec
);
6710 enum save_temps save
;
6712 if (!compare_debug_second
)
6714 n_switches_debug_check
[1] = n_switches
;
6715 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
6716 switches_debug_check
[1] = XDUPVEC (struct switchstr
, switches
,
6719 do_self_spec ("%:compare-debug-self-opt()");
6720 n_switches_debug_check
[0] = n_switches
;
6721 n_switches_alloc_debug_check
[0] = n_switches_alloc
;
6722 switches_debug_check
[0] = switches
;
6724 n_switches
= n_switches_debug_check
[1];
6725 n_switches_alloc
= n_switches_alloc_debug_check
[1];
6726 switches
= switches_debug_check
[1];
6729 /* Avoid crash when computing %j in this early. */
6730 save
= save_temps_flag
;
6731 save_temps_flag
= SAVE_TEMPS_NONE
;
6733 compare_debug
= -compare_debug
;
6734 do_self_spec ("%:compare-debug-self-opt()");
6736 save_temps_flag
= save
;
6738 if (!compare_debug_second
)
6740 n_switches_debug_check
[1] = n_switches
;
6741 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
6742 switches_debug_check
[1] = switches
;
6743 compare_debug
= -compare_debug
;
6744 n_switches
= n_switches_debug_check
[0];
6745 n_switches_alloc
= n_switches_debug_check
[0];
6746 switches
= switches_debug_check
[0];
6751 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6752 if (gcc_exec_prefix
)
6753 gcc_exec_prefix
= concat (gcc_exec_prefix
, spec_machine
, dir_separator_str
,
6754 spec_version
, dir_separator_str
, NULL
);
6756 /* Now we have the specs.
6757 Set the `valid' bits for switches that match anything in any spec. */
6759 validate_all_switches ();
6761 /* Now that we have the switches and the specs, set
6762 the subdirectory based on the options. */
6763 set_multilib_dir ();
6765 /* Set up to remember the pathname of gcc and any options
6766 needed for collect. We use argv[0] instead of progname because
6767 we need the complete pathname. */
6768 obstack_init (&collect_obstack
);
6769 obstack_grow (&collect_obstack
, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6770 obstack_grow (&collect_obstack
, argv
[0], strlen (argv
[0]) + 1);
6771 xputenv (XOBFINISH (&collect_obstack
, char *));
6773 /* Set up to remember the pathname of the lto wrapper. */
6776 lto_wrapper_file
= NULL
;
6778 lto_wrapper_file
= find_a_file (&exec_prefixes
, "lto-wrapper",
6780 if (lto_wrapper_file
)
6782 lto_wrapper_file
= convert_white_space (lto_wrapper_file
);
6783 lto_wrapper_spec
= lto_wrapper_file
;
6784 obstack_init (&collect_obstack
);
6785 obstack_grow (&collect_obstack
, "COLLECT_LTO_WRAPPER=",
6786 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
6787 obstack_grow (&collect_obstack
, lto_wrapper_spec
,
6788 strlen (lto_wrapper_spec
) + 1);
6789 xputenv (XOBFINISH (&collect_obstack
, char *));
6792 /* Reject switches that no pass was interested in. */
6794 for (i
= 0; (int) i
< n_switches
; i
++)
6795 if (! switches
[i
].validated
)
6796 error ("unrecognized command line option %<-%s%>", switches
[i
].part1
);
6798 /* Obey some of the options. */
6800 if (print_search_dirs
)
6802 printf (_("install: %s%s\n"),
6803 gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
6804 gcc_exec_prefix
? "" : machine_suffix
);
6805 printf (_("programs: %s\n"),
6806 build_search_list (&exec_prefixes
, "", false, false));
6807 printf (_("libraries: %s\n"),
6808 build_search_list (&startfile_prefixes
, "", false, true));
6812 if (print_file_name
)
6814 printf ("%s\n", find_file (print_file_name
));
6818 if (print_prog_name
)
6820 if (use_ld
!= NULL
&& ! strcmp (print_prog_name
, "ld"))
6822 /* Append USE_LD to to the default linker. */
6823 #ifdef DEFAULT_LINKER
6825 # ifdef HAVE_HOST_EXECUTABLE_SUFFIX
6826 int len
= (sizeof (DEFAULT_LINKER
)
6827 - sizeof (HOST_EXECUTABLE_SUFFIX
));
6831 char *default_linker
= xstrdup (DEFAULT_LINKER
);
6832 /* Strip HOST_EXECUTABLE_SUFFIX if DEFAULT_LINKER contains
6833 HOST_EXECUTABLE_SUFFIX. */
6834 if (! strcmp (&default_linker
[len
], HOST_EXECUTABLE_SUFFIX
))
6836 default_linker
[len
] = '\0';
6837 ld
= concat (default_linker
, use_ld
,
6838 HOST_EXECUTABLE_SUFFIX
, NULL
);
6843 ld
= concat (DEFAULT_LINKER
, use_ld
, NULL
);
6844 if (access (ld
, X_OK
) == 0)
6846 printf ("%s\n", ld
);
6850 print_prog_name
= concat (print_prog_name
, use_ld
, NULL
);
6852 char *newname
= find_a_file (&exec_prefixes
, print_prog_name
, X_OK
, 0);
6853 printf ("%s\n", (newname
? newname
: print_prog_name
));
6857 if (print_multi_lib
)
6859 print_multilib_info ();
6863 if (print_multi_directory
)
6865 if (multilib_dir
== NULL
)
6868 printf ("%s\n", multilib_dir
);
6872 if (print_multiarch
)
6874 if (multiarch_dir
== NULL
)
6877 printf ("%s\n", multiarch_dir
);
6883 if (target_system_root
)
6885 if (target_sysroot_suffix
)
6886 printf ("%s%s\n", target_system_root
, target_sysroot_suffix
);
6888 printf ("%s\n", target_system_root
);
6893 if (print_multi_os_directory
)
6895 if (multilib_os_dir
== NULL
)
6898 printf ("%s\n", multilib_os_dir
);
6902 if (print_sysroot_headers_suffix
)
6904 if (*sysroot_hdrs_suffix_spec
)
6906 printf("%s\n", (target_sysroot_hdrs_suffix
6907 ? target_sysroot_hdrs_suffix
6912 /* The error status indicates that only one set of fixed
6913 headers should be built. */
6914 fatal_error ("not configured with sysroot headers suffix");
6917 if (print_help_list
)
6923 printf (_("\nFor bug reporting instructions, please see:\n"));
6924 printf ("%s.\n", bug_report_url
);
6929 /* We do not exit here. Instead we have created a fake input file
6930 called 'help-dummy' which needs to be compiled, and we pass this
6931 on the various sub-processes, along with the --help switch.
6932 Ensure their output appears after ours. */
6933 fputc ('\n', stdout
);
6939 printf (_("%s %s%s\n"), progname
, pkgversion_string
,
6941 printf ("Copyright %s 2014 Free Software Foundation, Inc.\n",
6943 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
6944 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
6949 /* We do not exit here. We use the same mechanism of --help to print
6950 the version of the sub-processes. */
6951 fputc ('\n', stdout
);
6960 fnotice (stderr
, "Target: %s\n", spec_machine
);
6961 fnotice (stderr
, "Configured with: %s\n", configuration_arguments
);
6963 #ifdef THREAD_MODEL_SPEC
6964 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6965 but there's no point in doing all this processing just to get
6966 thread_model back. */
6967 obstack_init (&obstack
);
6968 do_spec_1 (THREAD_MODEL_SPEC
, 0, thread_model
);
6969 obstack_1grow (&obstack
, '\0');
6970 thrmod
= XOBFINISH (&obstack
, const char *);
6972 thrmod
= thread_model
;
6975 fnotice (stderr
, "Thread model: %s\n", thrmod
);
6977 /* compiler_version is truncated at the first space when initialized
6978 from version string, so truncate version_string at the first space
6979 before comparing. */
6980 for (n
= 0; version_string
[n
]; n
++)
6981 if (version_string
[n
] == ' ')
6984 if (! strncmp (version_string
, compiler_version
, n
)
6985 && compiler_version
[n
] == 0)
6986 fnotice (stderr
, "gcc version %s %s\n", version_string
,
6989 fnotice (stderr
, "gcc driver version %s %sexecuting gcc version %s\n",
6990 version_string
, pkgversion_string
, compiler_version
);
6996 if (n_infiles
== added_libraries
)
6997 fatal_error ("no input files");
7002 /* Make a place to record the compiler output file names
7003 that correspond to the input files. */
7006 i
+= lang_specific_extra_outfiles
;
7007 outfiles
= XCNEWVEC (const char *, i
);
7009 /* Record which files were specified explicitly as link input. */
7011 explicit_link_files
= XCNEWVEC (char, n_infiles
);
7013 combine_inputs
= have_o
|| flag_wpa
;
7015 for (i
= 0; (int) i
< n_infiles
; i
++)
7017 const char *name
= infiles
[i
].name
;
7018 struct compiler
*compiler
= lookup_compiler (name
,
7020 infiles
[i
].language
);
7022 if (compiler
&& !(compiler
->combinable
))
7023 combine_inputs
= false;
7025 if (lang_n_infiles
> 0 && compiler
!= input_file_compiler
7026 && infiles
[i
].language
&& infiles
[i
].language
[0] != '*')
7027 infiles
[i
].incompiler
= compiler
;
7031 input_file_compiler
= compiler
;
7032 infiles
[i
].incompiler
= compiler
;
7036 /* Since there is no compiler for this input file, assume it is a
7038 explicit_link_files
[i
] = 1;
7039 infiles
[i
].incompiler
= NULL
;
7041 infiles
[i
].compiled
= false;
7042 infiles
[i
].preprocessed
= false;
7045 if (!combine_inputs
&& have_c
&& have_o
&& lang_n_infiles
> 1)
7046 fatal_error ("cannot specify -o with -c, -S or -E with multiple files");
7048 for (i
= 0; (int) i
< n_infiles
; i
++)
7050 int this_file_error
= 0;
7052 /* Tell do_spec what to substitute for %i. */
7054 input_file_number
= i
;
7055 set_input (infiles
[i
].name
);
7057 if (infiles
[i
].compiled
)
7060 /* Use the same thing in %o, unless cp->spec says otherwise. */
7062 outfiles
[i
] = gcc_input_filename
;
7064 /* Figure out which compiler from the file's suffix. */
7067 = lookup_compiler (infiles
[i
].name
, input_filename_length
,
7068 infiles
[i
].language
);
7070 if (input_file_compiler
)
7072 /* Ok, we found an applicable compiler. Run its spec. */
7074 if (input_file_compiler
->spec
[0] == '#')
7076 error ("%s: %s compiler not installed on this system",
7077 gcc_input_filename
, &input_file_compiler
->spec
[1]);
7078 this_file_error
= 1;
7084 free (debug_check_temp_file
[0]);
7085 debug_check_temp_file
[0] = NULL
;
7087 free (debug_check_temp_file
[1]);
7088 debug_check_temp_file
[1] = NULL
;
7091 value
= do_spec (input_file_compiler
->spec
);
7092 infiles
[i
].compiled
= true;
7094 this_file_error
= 1;
7095 else if (compare_debug
&& debug_check_temp_file
[0])
7098 inform (0, "recompiling with -fcompare-debug");
7100 compare_debug
= -compare_debug
;
7101 n_switches
= n_switches_debug_check
[1];
7102 n_switches_alloc
= n_switches_alloc_debug_check
[1];
7103 switches
= switches_debug_check
[1];
7105 value
= do_spec (input_file_compiler
->spec
);
7107 compare_debug
= -compare_debug
;
7108 n_switches
= n_switches_debug_check
[0];
7109 n_switches_alloc
= n_switches_alloc_debug_check
[0];
7110 switches
= switches_debug_check
[0];
7114 error ("during -fcompare-debug recompilation");
7115 this_file_error
= 1;
7118 gcc_assert (debug_check_temp_file
[1]
7119 && filename_cmp (debug_check_temp_file
[0],
7120 debug_check_temp_file
[1]));
7123 inform (0, "comparing final insns dumps");
7125 if (compare_files (debug_check_temp_file
))
7126 this_file_error
= 1;
7131 free (debug_check_temp_file
[0]);
7132 debug_check_temp_file
[0] = NULL
;
7134 free (debug_check_temp_file
[1]);
7135 debug_check_temp_file
[1] = NULL
;
7140 /* If this file's name does not contain a recognized suffix,
7141 record it as explicit linker input. */
7144 explicit_link_files
[i
] = 1;
7146 /* Clear the delete-on-failure queue, deleting the files in it
7147 if this compilation failed. */
7149 if (this_file_error
)
7151 delete_failure_queue ();
7154 /* If this compilation succeeded, don't delete those files later. */
7155 clear_failure_queue ();
7158 /* Reset the input file name to the first compile/object file name, for use
7159 with %b in LINK_SPEC. We use the first input file that we can find
7160 a compiler to compile it instead of using infiles.language since for
7161 languages other than C we use aliases that we then lookup later. */
7166 for (i
= 0; i
< n_infiles
; i
++)
7167 if (infiles
[i
].incompiler
7168 || (infiles
[i
].language
&& infiles
[i
].language
[0] != '*'))
7170 set_input (infiles
[i
].name
);
7177 /* Make sure INPUT_FILE_NUMBER points to first available open
7179 input_file_number
= n_infiles
;
7180 if (lang_specific_pre_link ())
7184 /* Determine if there are any linker input files. */
7185 num_linker_inputs
= 0;
7186 for (i
= 0; (int) i
< n_infiles
; i
++)
7187 if (explicit_link_files
[i
] || outfiles
[i
] != NULL
)
7188 num_linker_inputs
++;
7190 /* Run ld to link all the compiler output files. */
7192 if (num_linker_inputs
> 0 && !seen_error () && print_subprocess_help
< 2)
7194 int tmp
= execution_count
;
7198 #if HAVE_LTO_PLUGIN > 0
7199 #if HAVE_LTO_PLUGIN == 2
7200 const char *fno_use_linker_plugin
= "fno-use-linker-plugin";
7202 const char *fuse_linker_plugin
= "fuse-linker-plugin";
7206 /* We'll use ld if we can't find collect2. */
7207 if (! strcmp (linker_name_spec
, "collect2"))
7209 char *s
= find_a_file (&exec_prefixes
, "collect2", X_OK
, false);
7211 linker_name_spec
= "ld";
7214 #if HAVE_LTO_PLUGIN > 0
7215 #if HAVE_LTO_PLUGIN == 2
7216 if (!switch_matches (fno_use_linker_plugin
,
7217 fno_use_linker_plugin
7218 + strlen (fno_use_linker_plugin
), 0))
7220 if (switch_matches (fuse_linker_plugin
,
7222 + strlen (fuse_linker_plugin
), 0))
7225 char *temp_spec
= find_a_file (&exec_prefixes
,
7226 LTOPLUGINSONAME
, R_OK
,
7229 fatal_error ("-fuse-linker-plugin, but %s not found",
7231 linker_plugin_file_spec
= convert_white_space (temp_spec
);
7234 lto_gcc_spec
= argv
[0];
7237 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
7239 putenv_from_prefixes (&exec_prefixes
, "COMPILER_PATH", false);
7240 putenv_from_prefixes (&startfile_prefixes
, LIBRARY_PATH_ENV
, true);
7242 if (print_subprocess_help
== 1)
7244 printf (_("\nLinker options\n==============\n\n"));
7245 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
7246 " to the linker.\n\n"));
7249 value
= do_spec (link_command_spec
);
7252 linker_was_run
= (tmp
!= execution_count
);
7255 /* If options said don't run linker,
7256 complain about input files to be given to the linker. */
7258 if (! linker_was_run
&& !seen_error ())
7259 for (i
= 0; (int) i
< n_infiles
; i
++)
7260 if (explicit_link_files
[i
]
7261 && !(infiles
[i
].language
&& infiles
[i
].language
[0] == '*'))
7262 warning (0, "%s: linker input file unused because linking not done",
7265 /* Delete some or all of the temporary files we made. */
7268 delete_failure_queue ();
7269 delete_temp_files ();
7271 if (print_help_list
)
7273 printf (("\nFor bug reporting instructions, please see:\n"));
7274 printf ("%s\n", bug_report_url
);
7278 return (signal_count
!= 0 ? 2
7279 : seen_error () ? (pass_exit_codes
? greatest_status
: 1)
7283 /* Find the proper compilation spec for the file name NAME,
7284 whose length is LENGTH. LANGUAGE is the specified language,
7285 or 0 if this file is to be passed to the linker. */
7287 static struct compiler
*
7288 lookup_compiler (const char *name
, size_t length
, const char *language
)
7290 struct compiler
*cp
;
7292 /* If this was specified by the user to be a linker input, indicate that. */
7293 if (language
!= 0 && language
[0] == '*')
7296 /* Otherwise, look for the language, if one is spec'd. */
7299 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7300 if (cp
->suffix
[0] == '@' && !strcmp (cp
->suffix
+ 1, language
))
7303 error ("language %s not recognized", language
);
7307 /* Look for a suffix. */
7308 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7310 if (/* The suffix `-' matches only the file name `-'. */
7311 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
7312 || (strlen (cp
->suffix
) < length
7313 /* See if the suffix matches the end of NAME. */
7314 && !strcmp (cp
->suffix
,
7315 name
+ length
- strlen (cp
->suffix
))
7320 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
7321 /* Look again, but case-insensitively this time. */
7323 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7325 if (/* The suffix `-' matches only the file name `-'. */
7326 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
7327 || (strlen (cp
->suffix
) < length
7328 /* See if the suffix matches the end of NAME. */
7329 && ((!strcmp (cp
->suffix
,
7330 name
+ length
- strlen (cp
->suffix
))
7331 || !strpbrk (cp
->suffix
, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
7332 && !strcasecmp (cp
->suffix
,
7333 name
+ length
- strlen (cp
->suffix
)))
7339 if (cp
>= compilers
)
7341 if (cp
->spec
[0] != '@')
7342 /* A non-alias entry: return it. */
7345 /* An alias entry maps a suffix to a language.
7346 Search for the language; pass 0 for NAME and LENGTH
7347 to avoid infinite recursion if language not found. */
7348 return lookup_compiler (NULL
, 0, cp
->spec
+ 1);
7354 save_string (const char *s
, int len
)
7356 char *result
= XNEWVEC (char, len
+ 1);
7358 memcpy (result
, s
, len
);
7364 pfatal_with_name (const char *name
)
7366 perror_with_name (name
);
7367 delete_temp_files ();
7372 perror_with_name (const char *name
)
7374 error ("%s: %m", name
);
7378 validate_switches_from_spec (const char *spec
, bool user
)
7380 const char *p
= spec
;
7383 if (c
== '%' && (*p
== '{' || *p
== '<' || (*p
== 'W' && *++p
== '{')))
7384 /* We have a switch spec. */
7385 p
= validate_switches (p
+ 1, user
);
7389 validate_all_switches (void)
7391 struct compiler
*comp
;
7392 struct spec_list
*spec
;
7394 for (comp
= compilers
; comp
->spec
; comp
++)
7395 validate_switches_from_spec (comp
->spec
, false);
7397 /* Look through the linked list of specs read from the specs file. */
7398 for (spec
= specs
; spec
; spec
= spec
->next
)
7399 validate_switches_from_spec (*spec
->ptr_spec
, spec
->user_p
);
7401 validate_switches_from_spec (link_command_spec
, false);
7404 /* Look at the switch-name that comes after START
7405 and mark as valid all supplied switches that match it. */
7408 validate_switches (const char *start
, bool user_spec
)
7410 const char *p
= start
;
7414 bool suffix
= false;
7415 bool starred
= false;
7417 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7426 if (*p
== '.' || *p
== ',')
7430 while (ISIDNUM (*p
) || *p
== '-' || *p
== '+' || *p
== '='
7431 || *p
== ',' || *p
== '.' || *p
== '@')
7436 starred
= true, p
++;
7442 /* Mark all matching switches as valid. */
7443 for (i
= 0; i
< n_switches
; i
++)
7444 if (!strncmp (switches
[i
].part1
, atom
, len
)
7445 && (starred
|| switches
[i
].part1
[len
] == '\0')
7446 && (switches
[i
].known
|| user_spec
))
7447 switches
[i
].validated
= true;
7451 if (*p
&& (p
[-1] == '|' || p
[-1] == '&'))
7454 if (*p
&& p
[-1] == ':')
7456 while (*p
&& *p
!= ';' && *p
!= '}')
7461 if (*p
== '{' || *p
== '<')
7462 p
= validate_switches (p
+1, user_spec
);
7463 else if (p
[0] == 'W' && p
[1] == '{')
7464 p
= validate_switches (p
+2, user_spec
);
7471 if (*p
&& p
[-1] == ';')
7485 static struct mdswitchstr
*mdswitches
;
7486 static int n_mdswitches
;
7488 /* Check whether a particular argument was used. The first time we
7489 canonicalize the switches to keep only the ones we care about. */
7492 used_arg (const char *p
, int len
)
7497 const char *replace
;
7502 static struct mswitchstr
*mswitches
;
7503 static int n_mswitches
;
7508 struct mswitchstr
*matches
;
7512 /* Break multilib_matches into the component strings of string
7513 and replacement string. */
7514 for (q
= multilib_matches
; *q
!= '\0'; q
++)
7519 = (struct mswitchstr
*) alloca ((sizeof (struct mswitchstr
)) * cnt
);
7521 q
= multilib_matches
;
7530 fatal_error ("multilib spec %qs is invalid",
7535 matches
[i
].len
= q
- matches
[i
].str
;
7537 matches
[i
].replace
= ++q
;
7538 while (*q
!= ';' && *q
!= '\0')
7541 goto invalid_matches
;
7544 matches
[i
].rep_len
= q
- matches
[i
].replace
;
7550 /* Now build a list of the replacement string for switches that we care
7551 about. Make sure we allocate at least one entry. This prevents
7552 xmalloc from calling fatal, and prevents us from re-executing this
7555 = XNEWVEC (struct mswitchstr
, n_mdswitches
+ (n_switches
? n_switches
: 1));
7556 for (i
= 0; i
< n_switches
; i
++)
7557 if ((switches
[i
].live_cond
& SWITCH_IGNORE
) == 0)
7559 int xlen
= strlen (switches
[i
].part1
);
7560 for (j
= 0; j
< cnt
; j
++)
7561 if (xlen
== matches
[j
].len
7562 && ! strncmp (switches
[i
].part1
, matches
[j
].str
, xlen
))
7564 mswitches
[n_mswitches
].str
= matches
[j
].replace
;
7565 mswitches
[n_mswitches
].len
= matches
[j
].rep_len
;
7566 mswitches
[n_mswitches
].replace
= (char *) 0;
7567 mswitches
[n_mswitches
].rep_len
= 0;
7573 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7574 on the command line nor any options mutually incompatible with
7576 for (i
= 0; i
< n_mdswitches
; i
++)
7580 for (q
= multilib_options
; *q
!= '\0'; *q
&& q
++)
7586 while (strncmp (q
, mdswitches
[i
].str
, mdswitches
[i
].len
) != 0
7587 || strchr (" /", q
[mdswitches
[i
].len
]) == NULL
)
7589 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
7596 if (*q
!= ' ' && *q
!= '\0')
7598 while (*r
!= ' ' && *r
!= '\0')
7601 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
7604 if (used_arg (r
, q
- r
))
7609 mswitches
[n_mswitches
].str
= mdswitches
[i
].str
;
7610 mswitches
[n_mswitches
].len
= mdswitches
[i
].len
;
7611 mswitches
[n_mswitches
].replace
= (char *) 0;
7612 mswitches
[n_mswitches
].rep_len
= 0;
7625 for (i
= 0; i
< n_mswitches
; i
++)
7626 if (len
== mswitches
[i
].len
&& ! strncmp (p
, mswitches
[i
].str
, len
))
7633 default_arg (const char *p
, int len
)
7637 for (i
= 0; i
< n_mdswitches
; i
++)
7638 if (len
== mdswitches
[i
].len
&& ! strncmp (p
, mdswitches
[i
].str
, len
))
7644 /* Work out the subdirectory to use based on the options. The format of
7645 multilib_select is a list of elements. Each element is a subdirectory
7646 name followed by a list of options followed by a semicolon. The format
7647 of multilib_exclusions is the same, but without the preceding
7648 directory. First gcc will check the exclusions, if none of the options
7649 beginning with an exclamation point are present, and all of the other
7650 options are present, then we will ignore this completely. Passing
7651 that, gcc will consider each multilib_select in turn using the same
7652 rules for matching the options. If a match is found, that subdirectory
7654 A subdirectory name is optionally followed by a colon and the corresponding
7658 set_multilib_dir (void)
7661 unsigned int this_path_len
;
7662 const char *this_path
, *this_arg
;
7663 const char *start
, *end
;
7665 int ok
, ndfltok
, first
;
7668 start
= multilib_defaults
;
7669 while (*start
== ' ' || *start
== '\t')
7671 while (*start
!= '\0')
7674 while (*start
!= ' ' && *start
!= '\t' && *start
!= '\0')
7676 while (*start
== ' ' || *start
== '\t')
7684 mdswitches
= XNEWVEC (struct mdswitchstr
, n_mdswitches
);
7685 for (start
= multilib_defaults
; *start
!= '\0'; start
= end
+ 1)
7687 while (*start
== ' ' || *start
== '\t')
7693 for (end
= start
+ 1;
7694 *end
!= ' ' && *end
!= '\t' && *end
!= '\0'; end
++)
7697 obstack_grow (&multilib_obstack
, start
, end
- start
);
7698 obstack_1grow (&multilib_obstack
, 0);
7699 mdswitches
[i
].str
= XOBFINISH (&multilib_obstack
, const char *);
7700 mdswitches
[i
++].len
= end
- start
;
7707 p
= multilib_exclusions
;
7710 /* Ignore newlines. */
7717 /* Check the arguments. */
7724 fatal_error ("multilib exclusions %qs is invalid",
7725 multilib_exclusions
);
7735 while (*p
!= ' ' && *p
!= ';')
7738 goto invalid_exclusions
;
7742 if (*this_arg
!= '!')
7750 ok
= used_arg (this_arg
, p
- this_arg
);
7765 p
= multilib_select
;
7767 /* Append multilib reuse rules if any. With those rules, we can reuse
7768 one multilib for certain different options sets. */
7769 if (strlen (multilib_reuse
) > 0)
7770 p
= concat (p
, multilib_reuse
, NULL
);
7774 /* Ignore newlines. */
7781 /* Get the initial path. */
7788 fatal_error ("multilib select %qs %qs is invalid",
7789 multilib_select
, multilib_reuse
);
7793 this_path_len
= p
- this_path
;
7795 /* Check the arguments. */
7802 goto invalid_select
;
7811 while (*p
!= ' ' && *p
!= ';')
7814 goto invalid_select
;
7818 if (*this_arg
!= '!')
7826 /* If this is a default argument, we can just ignore it.
7827 This is true even if this_arg begins with '!'. Beginning
7828 with '!' does not mean that this argument is necessarily
7829 inappropriate for this library: it merely means that
7830 there is a more specific library which uses this
7831 argument. If this argument is a default, we need not
7832 consider that more specific library. */
7833 ok
= used_arg (this_arg
, p
- this_arg
);
7840 if (default_arg (this_arg
, p
- this_arg
))
7849 if (this_path_len
!= 1
7850 || this_path
[0] != '.')
7852 char *new_multilib_dir
= XNEWVEC (char, this_path_len
+ 1);
7855 strncpy (new_multilib_dir
, this_path
, this_path_len
);
7856 new_multilib_dir
[this_path_len
] = '\0';
7857 q
= strchr (new_multilib_dir
, ':');
7860 multilib_dir
= new_multilib_dir
;
7867 const char *q
= this_path
, *end
= this_path
+ this_path_len
;
7869 while (q
< end
&& *q
!= ':')
7873 const char *q2
= q
+ 1, *ml_end
= end
;
7874 char *new_multilib_os_dir
;
7876 while (q2
< end
&& *q2
!= ':')
7880 if (ml_end
- q
== 1)
7881 multilib_os_dir
= xstrdup (".");
7884 new_multilib_os_dir
= XNEWVEC (char, ml_end
- q
);
7885 memcpy (new_multilib_os_dir
, q
+ 1, ml_end
- q
- 1);
7886 new_multilib_os_dir
[ml_end
- q
- 1] = '\0';
7887 multilib_os_dir
= new_multilib_os_dir
;
7890 if (q2
< end
&& *q2
== ':')
7892 char *new_multiarch_dir
= XNEWVEC (char, end
- q2
);
7893 memcpy (new_multiarch_dir
, q2
+ 1, end
- q2
- 1);
7894 new_multiarch_dir
[end
- q2
- 1] = '\0';
7895 multiarch_dir
= new_multiarch_dir
;
7904 if (multilib_dir
== NULL
&& multilib_os_dir
!= NULL
7905 && strcmp (multilib_os_dir
, ".") == 0)
7907 free (CONST_CAST (char *, multilib_os_dir
));
7908 multilib_os_dir
= NULL
;
7910 else if (multilib_dir
!= NULL
&& multilib_os_dir
== NULL
)
7911 multilib_os_dir
= multilib_dir
;
7914 /* Print out the multiple library subdirectory selection
7915 information. This prints out a series of lines. Each line looks
7916 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7917 required. Only the desired options are printed out, the negative
7918 matches. The options are print without a leading dash. There are
7919 no spaces to make it easy to use the information in the shell.
7920 Each subdirectory is printed only once. This assumes the ordering
7921 generated by the genmultilib script. Also, we leave out ones that match
7925 print_multilib_info (void)
7927 const char *p
= multilib_select
;
7928 const char *last_path
= 0, *this_path
;
7930 unsigned int last_path_len
= 0;
7935 /* Ignore newlines. */
7942 /* Get the initial path. */
7949 fatal_error ("multilib select %qs is invalid", multilib_select
);
7955 /* When --disable-multilib was used but target defines
7956 MULTILIB_OSDIRNAMES, entries starting with .: (and not starting
7957 with .:: for multiarch configurations) are there just to find
7958 multilib_os_dir, so skip them from output. */
7959 if (this_path
[0] == '.' && this_path
[1] == ':' && this_path
[2] != ':')
7962 /* Check for matches with the multilib_exclusions. We don't bother
7963 with the '!' in either list. If any of the exclusion rules match
7964 all of its options with the select rule, we skip it. */
7966 const char *e
= multilib_exclusions
;
7967 const char *this_arg
;
7972 /* Ignore newlines. */
7979 /* Check the arguments. */
7988 fatal_error ("multilib exclusion %qs is invalid",
7989 multilib_exclusions
);
8000 while (*e
!= ' ' && *e
!= ';')
8003 goto invalid_exclusion
;
8011 int len
= e
- this_arg
;
8014 goto invalid_select
;
8018 while (*q
!= ' ' && *q
!= ';')
8021 goto invalid_select
;
8025 if (! strncmp (arg
, this_arg
,
8026 (len
< q
- arg
) ? q
- arg
: len
)
8027 || default_arg (this_arg
, e
- this_arg
))
8057 /* If this is a duplicate, skip it. */
8058 skip
= (last_path
!= 0
8059 && (unsigned int) (p
- this_path
) == last_path_len
8060 && ! filename_ncmp (last_path
, this_path
, last_path_len
));
8062 last_path
= this_path
;
8063 last_path_len
= p
- this_path
;
8066 /* If this directory requires any default arguments, we can skip
8067 it. We will already have printed a directory identical to
8068 this one which does not require that default argument. */
8079 goto invalid_select
;
8086 while (*q
!= ' ' && *q
!= ';')
8089 goto invalid_select
;
8094 && default_arg (arg
, q
- arg
))
8109 for (p1
= last_path
; p1
< p
&& *p1
!= ':'; p1
++)
8120 goto invalid_select
;
8128 use_arg
= *p
!= '!';
8133 while (*p
!= ' ' && *p
!= ';')
8136 goto invalid_select
;
8148 /* If there are extra options, print them now. */
8149 if (multilib_extra
&& *multilib_extra
)
8151 int print_at
= TRUE
;
8154 for (q
= multilib_extra
; *q
!= '\0'; q
++)
8175 /* getenv built-in spec function.
8177 Returns the value of the environment variable given by its first
8178 argument, concatenated with the second argument. If the
8179 environment variable is not defined, a fatal error is issued. */
8182 getenv_spec_function (int argc
, const char **argv
)
8192 value
= getenv (argv
[0]);
8194 fatal_error ("environment variable %qs not defined", argv
[0]);
8196 /* We have to escape every character of the environment variable so
8197 they are not interpreted as active spec characters. A
8198 particularly painful case is when we are reading a variable
8199 holding a windows path complete with \ separators. */
8200 len
= strlen (value
) * 2 + strlen (argv
[1]) + 1;
8201 result
= XNEWVAR (char, len
);
8202 for (ptr
= result
; *value
; ptr
+= 2)
8208 strcpy (ptr
, argv
[1]);
8213 /* if-exists built-in spec function.
8215 Checks to see if the file specified by the absolute pathname in
8216 ARGS exists. Returns that pathname if found.
8218 The usual use for this function is to check for a library file
8219 (whose name has been expanded with %s). */
8222 if_exists_spec_function (int argc
, const char **argv
)
8224 /* Must have only one argument. */
8225 if (argc
== 1 && IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
8231 /* if-exists-else built-in spec function.
8233 This is like if-exists, but takes an additional argument which
8234 is returned if the first argument does not exist. */
8237 if_exists_else_spec_function (int argc
, const char **argv
)
8239 /* Must have exactly two arguments. */
8243 if (IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
8249 /* sanitize built-in spec function.
8251 This returns non-NULL, if sanitizing address, thread or
8252 any of the undefined behavior sanitizers. */
8255 sanitize_spec_function (int argc
, const char **argv
)
8260 if (strcmp (argv
[0], "address") == 0)
8261 return (flag_sanitize
& SANITIZE_USER_ADDRESS
) ? "" : NULL
;
8262 if (strcmp (argv
[0], "kernel-address") == 0)
8263 return (flag_sanitize
& SANITIZE_KERNEL_ADDRESS
) ? "" : NULL
;
8264 if (strcmp (argv
[0], "thread") == 0)
8265 return (flag_sanitize
& SANITIZE_THREAD
) ? "" : NULL
;
8266 if (strcmp (argv
[0], "undefined") == 0)
8267 return ((flag_sanitize
& (SANITIZE_UNDEFINED
| SANITIZE_NONDEFAULT
))
8268 && !flag_sanitize_undefined_trap_on_error
) ? "" : NULL
;
8269 if (strcmp (argv
[0], "leak") == 0)
8270 return ((flag_sanitize
8271 & (SANITIZE_ADDRESS
| SANITIZE_LEAK
| SANITIZE_THREAD
))
8272 == SANITIZE_LEAK
) ? "" : NULL
;
8276 /* replace-outfile built-in spec function.
8278 This looks for the first argument in the outfiles array's name and
8279 replaces it with the second argument. */
8282 replace_outfile_spec_function (int argc
, const char **argv
)
8285 /* Must have exactly two arguments. */
8289 for (i
= 0; i
< n_infiles
; i
++)
8291 if (outfiles
[i
] && !filename_cmp (outfiles
[i
], argv
[0]))
8292 outfiles
[i
] = xstrdup (argv
[1]);
8297 /* remove-outfile built-in spec function.
8299 * This looks for the first argument in the outfiles array's name and
8303 remove_outfile_spec_function (int argc
, const char **argv
)
8306 /* Must have exactly one argument. */
8310 for (i
= 0; i
< n_infiles
; i
++)
8312 if (outfiles
[i
] && !filename_cmp (outfiles
[i
], argv
[0]))
8318 /* Given two version numbers, compares the two numbers.
8319 A version number must match the regular expression
8320 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
8323 compare_version_strings (const char *v1
, const char *v2
)
8328 if (regcomp (&r
, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
8329 REG_EXTENDED
| REG_NOSUB
) != 0)
8331 rresult
= regexec (&r
, v1
, 0, NULL
, 0);
8332 if (rresult
== REG_NOMATCH
)
8333 fatal_error ("invalid version number %qs", v1
);
8334 else if (rresult
!= 0)
8336 rresult
= regexec (&r
, v2
, 0, NULL
, 0);
8337 if (rresult
== REG_NOMATCH
)
8338 fatal_error ("invalid version number %qs", v2
);
8339 else if (rresult
!= 0)
8342 return strverscmp (v1
, v2
);
8346 /* version_compare built-in spec function.
8348 This takes an argument of the following form:
8350 <comparison-op> <arg1> [<arg2>] <switch> <result>
8352 and produces "result" if the comparison evaluates to true,
8353 and nothing if it doesn't.
8355 The supported <comparison-op> values are:
8357 >= true if switch is a later (or same) version than arg1
8359 < true if switch is an earlier version than arg1
8361 >< true if switch is arg1 or later, and earlier than arg2
8362 <> true if switch is earlier than arg1 or is arg2 or later
8364 If the switch is not present, the condition is false unless
8365 the first character of the <comparison-op> is '!'.
8368 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
8369 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
8372 version_compare_spec_function (int argc
, const char **argv
)
8376 const char *switch_value
= NULL
;
8381 fatal_error ("too few arguments to %%:version-compare");
8382 if (argv
[0][0] == '\0')
8384 if ((argv
[0][1] == '<' || argv
[0][1] == '>') && argv
[0][0] != '!')
8386 if (argc
!= nargs
+ 3)
8387 fatal_error ("too many arguments to %%:version-compare");
8389 switch_len
= strlen (argv
[nargs
+ 1]);
8390 for (i
= 0; i
< n_switches
; i
++)
8391 if (!strncmp (switches
[i
].part1
, argv
[nargs
+ 1], switch_len
)
8392 && check_live_switch (i
, switch_len
))
8393 switch_value
= switches
[i
].part1
+ switch_len
;
8395 if (switch_value
== NULL
)
8399 comp1
= compare_version_strings (switch_value
, argv
[1]);
8401 comp2
= compare_version_strings (switch_value
, argv
[2]);
8403 comp2
= -1; /* This value unused. */
8406 switch (argv
[0][0] << 8 | argv
[0][1])
8408 case '>' << 8 | '=':
8409 result
= comp1
>= 0;
8411 case '!' << 8 | '<':
8412 result
= comp1
>= 0 || switch_value
== NULL
;
8417 case '!' << 8 | '>':
8418 result
= comp1
< 0 || switch_value
== NULL
;
8420 case '>' << 8 | '<':
8421 result
= comp1
>= 0 && comp2
< 0;
8423 case '<' << 8 | '>':
8424 result
= comp1
< 0 || comp2
>= 0;
8428 fatal_error ("unknown operator %qs in %%:version-compare", argv
[0]);
8433 return argv
[nargs
+ 2];
8436 /* %:include builtin spec function. This differs from %include in that it
8437 can be nested inside a spec, and thus be conditionalized. It takes
8438 one argument, the filename, and looks for it in the startfile path.
8439 The result is always NULL, i.e. an empty expansion. */
8442 include_spec_function (int argc
, const char **argv
)
8449 file
= find_a_file (&startfile_prefixes
, argv
[0], R_OK
, true);
8450 read_specs (file
? file
: argv
[0], false, false);
8455 /* %:find-file spec function. This function replaces its argument by
8456 the file found through find_file, that is the -print-file-name gcc
8459 find_file_spec_function (int argc
, const char **argv
)
8466 file
= find_file (argv
[0]);
8471 /* %:find-plugindir spec function. This function replaces its argument
8472 by the -iplugindir=<dir> option. `dir' is found through find_file, that
8473 is the -print-file-name gcc program option. */
8475 find_plugindir_spec_function (int argc
, const char **argv ATTRIBUTE_UNUSED
)
8482 option
= concat ("-iplugindir=", find_file ("plugin"), NULL
);
8487 /* %:print-asm-header spec function. Print a banner to say that the
8488 following output is from the assembler. */
8491 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED
,
8492 const char **argv ATTRIBUTE_UNUSED
)
8494 printf (_("Assembler options\n=================\n\n"));
8495 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
8500 /* Get a random number for -frandom-seed */
8502 static unsigned HOST_WIDE_INT
8503 get_random_number (void)
8505 unsigned HOST_WIDE_INT ret
= 0;
8508 fd
= open ("/dev/urandom", O_RDONLY
);
8511 read (fd
, &ret
, sizeof (HOST_WIDE_INT
));
8517 /* Get some more or less random data. */
8518 #ifdef HAVE_GETTIMEOFDAY
8522 gettimeofday (&tv
, NULL
);
8523 ret
= tv
.tv_sec
* 1000 + tv
.tv_usec
/ 1000;
8527 time_t now
= time (NULL
);
8529 if (now
!= (time_t)-1)
8530 ret
= (unsigned) now
;
8534 return ret
^ getpid ();
8537 /* %:compare-debug-dump-opt spec function. Save the last argument,
8538 expected to be the last -fdump-final-insns option, or generate a
8542 compare_debug_dump_opt_spec_function (int arg
,
8543 const char **argv ATTRIBUTE_UNUSED
)
8548 static char random_seed
[HOST_BITS_PER_WIDE_INT
/ 4 + 3];
8551 fatal_error ("too many arguments to %%:compare-debug-dump-opt");
8553 do_spec_2 ("%{fdump-final-insns=*:%*}");
8554 do_spec_1 (" ", 0, NULL
);
8556 if (argbuf
.length () > 0
8557 && strcmp (argv
[argbuf
.length () - 1], "."))
8562 name
= xstrdup (argv
[argbuf
.length () - 1]);
8567 const char *ext
= NULL
;
8569 if (argbuf
.length () > 0)
8571 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
8574 else if (!compare_debug
)
8577 do_spec_2 ("%g.gkd");
8579 do_spec_1 (" ", 0, NULL
);
8581 gcc_assert (argbuf
.length () > 0);
8583 name
= concat (argbuf
.last (), ext
, NULL
);
8585 ret
= concat ("-fdump-final-insns=", name
, NULL
);
8588 which
= compare_debug
< 0;
8589 debug_check_temp_file
[which
] = name
;
8593 unsigned HOST_WIDE_INT value
= get_random_number ();
8595 sprintf (random_seed
, HOST_WIDE_INT_PRINT_HEX
, value
);
8601 ret
= concat ("%{!frandom-seed=*:-frandom-seed=", random_seed
, "} ",
8612 static const char *debug_auxbase_opt
;
8614 /* %:compare-debug-self-opt spec function. Expands to the options
8615 that are to be passed in the second compilation of
8619 compare_debug_self_opt_spec_function (int arg
,
8620 const char **argv ATTRIBUTE_UNUSED
)
8623 fatal_error ("too many arguments to %%:compare-debug-self-opt");
8625 if (compare_debug
>= 0)
8628 do_spec_2 ("%{c|S:%{o*:%*}}");
8629 do_spec_1 (" ", 0, NULL
);
8631 if (argbuf
.length () > 0)
8632 debug_auxbase_opt
= concat ("-auxbase-strip ",
8636 debug_auxbase_opt
= NULL
;
8639 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
8640 %<fdump-final-insns=* -w -S -o %j \
8641 %{!fcompare-debug-second:-fcompare-debug-second} \
8642 ", compare_debug_opt
, NULL
);
8645 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
8646 options that are to be passed in the second compilation of
8647 compare-debug. It expects, as an argument, the basename of the
8648 current input file name, with the .gk suffix appended to it. */
8651 compare_debug_auxbase_opt_spec_function (int arg
,
8658 fatal_error ("too few arguments to %%:compare-debug-auxbase-opt");
8661 fatal_error ("too many arguments to %%:compare-debug-auxbase-opt");
8663 if (compare_debug
>= 0)
8666 len
= strlen (argv
[0]);
8667 if (len
< 3 || strcmp (argv
[0] + len
- 3, ".gk") != 0)
8668 fatal_error ("argument to %%:compare-debug-auxbase-opt "
8669 "does not end in .gk");
8671 if (debug_auxbase_opt
)
8672 return debug_auxbase_opt
;
8674 #define OPT "-auxbase "
8677 name
= (char*) xmalloc (sizeof (OPT
) + len
);
8678 memcpy (name
, OPT
, sizeof (OPT
) - 1);
8679 memcpy (name
+ sizeof (OPT
) - 1, argv
[0], len
);
8680 name
[sizeof (OPT
) - 1 + len
] = '\0';
8687 /* %:pass-through-libs spec function. Finds all -l options and input
8688 file names in the lib spec passed to it, and makes a list of them
8689 prepended with the plugin option to cause them to be passed through
8690 to the final link after all the new object files have been added. */
8693 pass_through_libs_spec_func (int argc
, const char **argv
)
8695 char *prepended
= xstrdup (" ");
8697 /* Shlemiel the painter's algorithm. Innately horrible, but at least
8698 we know that there will never be more than a handful of strings to
8699 concat, and it's only once per run, so it's not worth optimising. */
8700 for (n
= 0; n
< argc
; n
++)
8702 char *old
= prepended
;
8703 /* Anything that isn't an option is a full path to an output
8704 file; pass it through if it ends in '.a'. Among options,
8706 if (argv
[n
][0] == '-' && argv
[n
][1] == 'l')
8708 const char *lopt
= argv
[n
] + 2;
8709 /* Handle both joined and non-joined -l options. If for any
8710 reason there's a trailing -l with no joined or following
8711 arg just discard it. */
8712 if (!*lopt
&& ++n
>= argc
)
8716 prepended
= concat (prepended
, "-plugin-opt=-pass-through=-l",
8719 else if (!strcmp (".a", argv
[n
] + strlen (argv
[n
]) - 2))
8721 prepended
= concat (prepended
, "-plugin-opt=-pass-through=",
8722 argv
[n
], " ", NULL
);
8724 if (prepended
!= old
)
8730 /* %:replace-extension spec function. Replaces the extension of the
8731 first argument with the second argument. */
8734 replace_extension_spec_func (int argc
, const char **argv
)
8742 fatal_error ("too few arguments to %%:replace-extension");
8744 name
= xstrdup (argv
[0]);
8746 for (i
= strlen (name
) - 1; i
>= 0; i
--)
8747 if (IS_DIR_SEPARATOR (name
[i
]))
8750 p
= strrchr (name
+ i
+ 1, '.');
8754 result
= concat (name
, argv
[1], NULL
);
8760 /* Insert backslash before spaces in ORIG (usually a file path), to
8761 avoid being broken by spec parser.
8763 This function is needed as do_spec_1 treats white space (' ' and '\t')
8764 as the end of an argument. But in case of -plugin /usr/gcc install/xxx.so,
8765 the file name should be treated as a single argument rather than being
8766 broken into multiple. Solution is to insert '\\' before the space in a
8769 This function converts and only converts all occurrence of ' '
8770 to '\\' + ' ' and '\t' to '\\' + '\t'. For example:
8774 "a\\ b" -> "a\\\\ b"
8776 orig: input null-terminating string that was allocated by xalloc. The
8777 memory it points to might be freed in this function. Behavior undefined
8778 if ORIG wasn't xalloced or was freed already at entry.
8780 Return: ORIG if no conversion needed. Otherwise a newly allocated string
8781 that was converted from ORIG. */
8784 convert_white_space (char *orig
)
8786 int len
, number_of_space
= 0;
8788 for (len
= 0; orig
[len
]; len
++)
8789 if (orig
[len
] == ' ' || orig
[len
] == '\t') number_of_space
++;
8791 if (number_of_space
)
8793 char *new_spec
= (char *) xmalloc (len
+ number_of_space
+ 1);
8795 for (j
= 0, k
= 0; j
<= len
; j
++, k
++)
8797 if (orig
[j
] == ' ' || orig
[j
] == '\t')
8798 new_spec
[k
++] = '\\';
8799 new_spec
[k
] = orig
[j
];