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 HAVE_LD_STATIC_DYNAMIC
580 #define LIBLSAN_SPEC "%{!shared:%{static-liblsan:" LD_STATIC_OPTION \
581 "} -llsan %{static-liblsan:" LD_DYNAMIC_OPTION "}" \
582 STATIC_LIBLSAN_LIBS "}"
584 #define LIBLSAN_SPEC "%{!shared:-llsan" STATIC_LIBLSAN_LIBS "}"
588 #ifndef LIBUBSAN_SPEC
589 #define STATIC_LIBUBSAN_LIBS \
590 " %{static-libubsan:%:include(libsanitizer.spec)%(link_libubsan)}"
591 #ifdef HAVE_LD_STATIC_DYNAMIC
592 #define LIBUBSAN_SPEC "%{static-libubsan:" LD_STATIC_OPTION \
593 "} -lubsan %{static-libubsan:" LD_DYNAMIC_OPTION "}" \
596 #define LIBUBSAN_SPEC "-lubsan" STATIC_LIBUBSAN_LIBS
600 /* Linker options for compressed debug sections. */
601 #if HAVE_LD_COMPRESS_DEBUG == 0
602 /* No linker support. */
603 #define LINK_COMPRESS_DEBUG_SPEC \
604 " %{gz*:%e-gz is not supported in this configuration} "
605 #elif HAVE_LD_COMPRESS_DEBUG == 1
606 /* GNU style on input, GNU ld options. Reject, not useful. */
607 #define LINK_COMPRESS_DEBUG_SPEC \
608 " %{gz*:%e-gz is not supported in this configuration} "
609 #elif HAVE_LD_COMPRESS_DEBUG == 2
610 /* GNU style, GNU gold options. */
611 #define LINK_COMPRESS_DEBUG_SPEC \
612 " %{gz|gz=zlib-gnu:" LD_COMPRESS_DEBUG_OPTION "=zlib}" \
613 " %{gz=none:" LD_COMPRESS_DEBUG_OPTION "=none}" \
614 " %{gz=zlib:%e-gz=zlib is not supported in this configuration} "
615 #elif HAVE_LD_COMPRESS_DEBUG == 3
616 /* ELF gABI style. */
617 #define LINK_COMPRESS_DEBUG_SPEC \
618 " %{gz|gz=zlib:" LD_COMPRESS_DEBUG_OPTION "=zlib}" \
619 " %{gz=none:" LD_COMPRESS_DEBUG_OPTION "=none}" \
620 " %{gz=zlib-gnu:" LD_COMPRESS_DEBUG_OPTION "=zlib-gnu} "
622 #error Unknown value for HAVE_LD_COMPRESS_DEBUG.
625 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
628 #if defined(REAL_LIBGCC_SPEC)
629 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
630 #elif defined(LINK_LIBGCC_SPECIAL_1)
631 /* Have gcc do the search for libgcc.a. */
632 #define LIBGCC_SPEC "libgcc.a%s"
634 #define LIBGCC_SPEC "-lgcc"
638 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
639 #ifndef STARTFILE_SPEC
640 #define STARTFILE_SPEC \
641 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
644 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
646 #define ENDFILE_SPEC ""
650 #define LINKER_NAME "collect2"
653 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
654 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
659 /* Assembler options for compressed debug sections. */
660 #if HAVE_LD_COMPRESS_DEBUG < 2
661 /* Reject if the linker cannot write compressed debug sections. */
662 #define ASM_COMPRESS_DEBUG_SPEC \
663 " %{gz*:%e-gz is not supported in this configuration} "
664 #else /* HAVE_LD_COMPRESS_DEBUG >= 2 */
665 #if HAVE_AS_COMPRESS_DEBUG == 0
666 /* No assembler support. Ignore silently. */
667 #define ASM_COMPRESS_DEBUG_SPEC \
669 #elif HAVE_AS_COMPRESS_DEBUG == 1
670 /* GNU style, GNU as options. */
671 #define ASM_COMPRESS_DEBUG_SPEC \
672 " %{gz|gz=zlib-gnu:" AS_COMPRESS_DEBUG_OPTION "}" \
673 " %{gz=none:" AS_NO_COMPRESS_DEBUG_OPTION "}" \
674 " %{gz=zlib:%e-gz=zlib is not supported in this configuration} "
675 #elif HAVE_AS_COMPRESS_DEBUG == 2
676 /* ELF gABI style. */
677 #define ASM_COMPRESS_DEBUG_SPEC \
678 " %{gz|gz=zlib:" AS_COMPRESS_DEBUG_OPTION "=zlib}" \
679 " %{gz=none:" AS_COMPRESS_DEBUG_OPTION "=none}" \
680 " %{gz=zlib-gnu:" AS_COMPRESS_DEBUG_OPTION "=zlib-gnu} "
682 #error Unknown value for HAVE_AS_COMPRESS_DEBUG.
684 #endif /* HAVE_LD_COMPRESS_DEBUG >= 2 */
686 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
688 #ifndef ASM_DEBUG_SPEC
689 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
690 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
691 # define ASM_DEBUG_SPEC \
692 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
693 ? "%{!g0:%{gdwarf*:--gdwarf2}%{!gdwarf*:%{g*:--gstabs}}}" ASM_MAP \
694 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
696 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
697 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
699 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
700 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
704 #ifndef ASM_DEBUG_SPEC
705 # define ASM_DEBUG_SPEC ""
708 /* Here is the spec for running the linker, after compiling all files. */
710 /* This is overridable by the target in case they need to specify the
711 -lgcc and -lc order specially, yet not require them to override all
712 of LINK_COMMAND_SPEC. */
713 #ifndef LINK_GCC_C_SEQUENCE_SPEC
714 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
717 #ifndef LINK_SSP_SPEC
718 #ifdef TARGET_LIBC_PROVIDES_SSP
719 #define LINK_SSP_SPEC "%{fstack-protector:}"
721 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-strong|fstack-protector-all:-lssp_nonshared -lssp}"
725 #ifndef LINK_PIE_SPEC
727 #define LINK_PIE_SPEC "%{pie:-pie} "
729 #define LINK_PIE_SPEC "%{pie:} "
733 #ifndef LINK_BUILDID_SPEC
734 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
735 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
739 /* Conditional to test whether the LTO plugin is used or not.
740 FIXME: For slim LTO we will need to enable plugin unconditionally. This
741 still cause problems with PLUGIN_LD != LD and when plugin is built but
742 not useable. For GCC 4.6 we don't support slim LTO and thus we can enable
743 plugin only when LTO is enabled. We still honor explicit
744 -fuse-linker-plugin if the linker used understands -plugin. */
746 /* The linker has some plugin support. */
747 #if HAVE_LTO_PLUGIN > 0
748 /* The linker used has full plugin support, use LTO plugin by default. */
749 #if HAVE_LTO_PLUGIN == 2
750 #define PLUGIN_COND "!fno-use-linker-plugin:%{!fno-lto"
751 #define PLUGIN_COND_CLOSE "}"
753 /* The linker used has limited plugin support, use LTO plugin with explicit
754 -fuse-linker-plugin. */
755 #define PLUGIN_COND "fuse-linker-plugin"
756 #define PLUGIN_COND_CLOSE ""
758 #define LINK_PLUGIN_SPEC \
760 -plugin %(linker_plugin_file) \
761 -plugin-opt=%(lto_wrapper) \
762 -plugin-opt=-fresolution=%u.res \
763 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
766 /* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */
767 #define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\
768 %e-fuse-linker-plugin is not supported in this configuration}"
771 /* Linker command line options for -fsanitize= early on the command line. */
772 #ifndef SANITIZER_EARLY_SPEC
773 #define SANITIZER_EARLY_SPEC "\
774 %{!nostdlib:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_EARLY_SPEC "} \
775 %{%:sanitize(thread):" LIBTSAN_EARLY_SPEC "}}}"
778 /* Linker command line options for -fsanitize= late on the command line. */
779 #ifndef SANITIZER_SPEC
780 #define SANITIZER_SPEC "\
781 %{!nostdlib:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_SPEC "\
782 %{static:%ecannot specify -static with -fsanitize=address}}\
783 %{%:sanitize(thread):" LIBTSAN_SPEC "\
784 %{!pie:%{!shared:%e-fsanitize=thread linking must be done with -pie or -shared}}}\
785 %{%:sanitize(undefined):" LIBUBSAN_SPEC "}\
786 %{%:sanitize(leak):" LIBLSAN_SPEC "}}}"
789 /* This is the spec to use, once the code for creating the vtable
790 verification runtime library, libvtv.so, has been created. Currently
791 the vtable verification runtime functions are in libstdc++, so we use
792 the spec just below this one. */
793 #ifndef VTABLE_VERIFICATION_SPEC
794 #define VTABLE_VERIFICATION_SPEC "\
795 %{!nostdlib:%{fvtable-verify=std: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}\
796 %{fvtable-verify=preinit: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}}"
799 /* -u* was put back because both BSD and SysV seem to support it. */
800 /* %{static:} simply prevents an error message if the target machine
801 doesn't handle -static. */
802 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
803 scripts which exist in user specified directories, or in standard
805 /* We pass any -flto flags on to the linker, which is expected
806 to understand them. In practice, this means it had better be collect2. */
807 /* %{e*} includes -export-dynamic; see comment in common.opt. */
808 #ifndef LINK_COMMAND_SPEC
809 #define LINK_COMMAND_SPEC "\
810 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
813 "%{flto|flto=*:%<fcompare-debug*} \
814 %{flto} %{flto=*} %l " LINK_PIE_SPEC \
815 "%{fuse-ld=*:-fuse-ld=%*} " LINK_COMPRESS_DEBUG_SPEC \
816 "%X %{o*} %{e*} %{N} %{n} %{r}\
817 %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}} " VTABLE_VERIFICATION_SPEC " \
818 %{!nostdlib:%{!nostartfiles:%{fupc:%:include(upc-crtbegin.spec)%(upc_crtbegin)}}}\
819 %{static:} %{L*} %(mfwrap) %(link_libgcc) " SANITIZER_EARLY_SPEC " %o\
820 %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
821 %{fcilkplus:%:include(libcilkrts.spec)%(link_cilkrts)}\
822 %{fgnu-tm:%:include(libitm.spec)%(link_itm)}\
823 %{fupc:%:include(libgupc.spec)%(link_upc)}\
824 %(mflib) " STACK_SPLIT_SPEC "\
825 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} " SANITIZER_SPEC " \
826 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
827 %{!nostdlib:%{!nostartfiles:%{fupc:%:include(upc-crtend.spec)%(upc_crtend)}}}\
828 %{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}"
831 #ifndef LINK_LIBGCC_SPEC
832 /* Generate -L options for startfile prefix list. */
833 # define LINK_LIBGCC_SPEC "%D"
836 #ifndef STARTFILE_PREFIX_SPEC
837 # define STARTFILE_PREFIX_SPEC ""
841 # define SYSROOT_SPEC "--sysroot=%R"
844 #ifndef SYSROOT_SUFFIX_SPEC
845 # define SYSROOT_SUFFIX_SPEC ""
848 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
849 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
852 static const char *asm_debug
= ASM_DEBUG_SPEC
;
853 static const char *cpp_spec
= CPP_SPEC
;
854 static const char *cc1_spec
= CC1_SPEC
;
855 static const char *cc1plus_spec
= CC1PLUS_SPEC
;
856 static const char *link_gcc_c_sequence_spec
= LINK_GCC_C_SEQUENCE_SPEC
;
857 static const char *link_ssp_spec
= LINK_SSP_SPEC
;
858 static const char *asm_spec
= ASM_SPEC
;
859 static const char *asm_final_spec
= ASM_FINAL_SPEC
;
860 static const char *link_spec
= LINK_SPEC
;
861 static const char *lib_spec
= LIB_SPEC
;
862 static const char *link_gomp_spec
= "";
863 static const char *upc_crtbegin_spec
= "";
864 static const char *link_upc_spec
= "";
865 static const char *upc_crtend_spec
= "";
866 static const char *libgcc_spec
= LIBGCC_SPEC
;
867 static const char *endfile_spec
= ENDFILE_SPEC
;
868 static const char *startfile_spec
= STARTFILE_SPEC
;
869 static const char *linker_name_spec
= LINKER_NAME
;
870 static const char *linker_plugin_file_spec
= "";
871 static const char *lto_wrapper_spec
= "";
872 static const char *lto_gcc_spec
= "";
873 static const char *link_command_spec
= LINK_COMMAND_SPEC
;
874 static const char *link_libgcc_spec
= LINK_LIBGCC_SPEC
;
875 static const char *startfile_prefix_spec
= STARTFILE_PREFIX_SPEC
;
876 static const char *sysroot_spec
= SYSROOT_SPEC
;
877 static const char *sysroot_suffix_spec
= SYSROOT_SUFFIX_SPEC
;
878 static const char *sysroot_hdrs_suffix_spec
= SYSROOT_HEADERS_SUFFIX_SPEC
;
879 static const char *self_spec
= "";
881 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
882 There should be no need to override these in target dependent files,
883 but we need to copy them to the specs file so that newer versions
884 of the GCC driver can correctly drive older tool chains with the
885 appropriate -B options. */
887 /* When cpplib handles traditional preprocessing, get rid of this, and
888 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
889 that we default the front end language better. */
890 static const char *trad_capable_cpp
=
891 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}";
893 /* We don't wrap .d files in %W{} since a missing .d file, and
894 therefore no dependency entry, confuses make into thinking a .o
895 file that happens to exist is up-to-date. */
896 static const char *cpp_unique_options
=
897 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
898 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
899 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
900 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
901 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
902 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
903 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
904 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
907 /* This contains cpp options which are common with cc1_options and are passed
908 only when preprocessing only to avoid duplication. We pass the cc1 spec
909 options to the preprocessor so that it the cc1 spec may manipulate
910 options used to set target flags. Those special target flags settings may
911 in turn cause preprocessor symbols to be defined specially. */
912 static const char *cpp_options
=
913 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
914 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
915 %{undef} %{save-temps*:-fpch-preprocess}";
917 /* This contains cpp options which are not passed when the preprocessor
918 output will be used by another program. */
919 static const char *cpp_debug_options
= "%{d*}";
921 /* NB: This is shared amongst all front-ends, except for Ada. */
922 static const char *cc1_options
=
923 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
924 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
925 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
926 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
927 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
928 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
929 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
930 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\
931 %{-target-help:--target-help}\
932 %{-version:--version}\
933 %{-help=*:--help=%*}\
934 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
935 %{fsyntax-only:-o %j} %{-param*}\
936 %{coverage:-fprofile-arcs -ftest-coverage}";
938 static const char *upc_options
=
939 "-fupc %{!fno-upc-pre-include:-include gcc-upc.h}";
941 static const char *asm_options
=
942 "%{-target-help:%:print-asm-header()} "
944 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
945 to the assembler equivalents. */
946 "%{v} %{w:-W} %{I*} "
948 ASM_COMPRESS_DEBUG_SPEC
949 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
951 static const char *invoke_as
=
952 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
954 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
955 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
959 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
960 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
964 /* Some compilers have limits on line lengths, and the multilib_select
965 and/or multilib_matches strings can be very long, so we build them at
967 static struct obstack multilib_obstack
;
968 static const char *multilib_select
;
969 static const char *multilib_matches
;
970 static const char *multilib_defaults
;
971 static const char *multilib_exclusions
;
972 static const char *multilib_reuse
;
974 /* Check whether a particular argument is a default argument. */
976 #ifndef MULTILIB_DEFAULTS
977 #define MULTILIB_DEFAULTS { "" }
980 static const char *const multilib_defaults_raw
[] = MULTILIB_DEFAULTS
;
982 #ifndef DRIVER_SELF_SPECS
983 #define DRIVER_SELF_SPECS ""
986 /* Linking to libgomp implies pthreads. This is particularly important
987 for targets that use different start files and suchlike. */
988 #ifndef GOMP_SELF_SPECS
989 #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}"
992 /* Likewise for -fgnu-tm. */
993 #ifndef GTM_SELF_SPECS
994 #define GTM_SELF_SPECS "%{fgnu-tm: -pthread}"
997 /* Likewise for -fcilkplus. */
998 #ifndef CILK_SELF_SPECS
999 #define CILK_SELF_SPECS "%{fcilkplus: -pthread}"
1002 static const char *const driver_self_specs
[] = {
1003 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
1004 DRIVER_SELF_SPECS
, CONFIGURE_SPECS
, GOMP_SELF_SPECS
, GTM_SELF_SPECS
,
1008 #ifndef OPTION_DEFAULT_SPECS
1009 #define OPTION_DEFAULT_SPECS { "", "" }
1018 static const struct default_spec
1019 option_default_specs
[] = { OPTION_DEFAULT_SPECS
};
1023 struct user_specs
*next
;
1024 const char *filename
;
1027 static struct user_specs
*user_specs_head
, *user_specs_tail
;
1030 /* Record the mapping from file suffixes for compilation specs. */
1034 const char *suffix
; /* Use this compiler for input files
1035 whose names end in this suffix. */
1037 const char *spec
; /* To use this compiler, run this spec. */
1039 const char *cpp_spec
; /* If non-NULL, substitute this spec
1040 for `%C', rather than the usual
1042 const int combinable
; /* If nonzero, compiler can deal with
1043 multiple source files at once (IMA). */
1044 const int needs_preprocessing
; /* If nonzero, source files need to
1045 be run through a preprocessor. */
1048 /* Pointer to a vector of `struct compiler' that gives the spec for
1049 compiling a file, based on its suffix.
1050 A file that does not end in any of these suffixes will be passed
1051 unchanged to the loader and nothing else will be done to it.
1053 An entry containing two 0s is used to terminate the vector.
1055 If multiple entries match a file, the last matching one is used. */
1057 static struct compiler
*compilers
;
1059 /* Number of entries in `compilers', not counting the null terminator. */
1061 static int n_compilers
;
1063 /* The default list of file name suffixes and their compilation specs. */
1065 static const struct compiler default_compilers
[] =
1067 /* Add lists of suffixes of known languages here. If those languages
1068 were not present when we built the driver, we will hit these copies
1069 and be given a more meaningful error than "file not used since
1070 linking is not done". */
1071 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
1072 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
1073 {".mii", "#Objective-C++", 0, 0, 0},
1074 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
1075 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
1076 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
1077 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
1078 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
1079 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
1080 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
1081 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
1082 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
1083 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
1084 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
1085 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
1086 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
1087 {".r", "#Ratfor", 0, 0, 0},
1088 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
1089 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
1090 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
1091 {".go", "#Go", 0, 1, 0},
1092 /* Next come the entries for C. */
1093 {".c", "@c", 0, 0, 1},
1095 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1096 external preprocessor if -save-temps is given. */
1097 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1100 %eGNU C no longer supports -traditional without -E}\
1101 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1102 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1103 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1105 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1106 cc1 %(cpp_unique_options) %(cc1_options)}}}\
1107 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
1109 "%{!E:%e-E or -x required when input is from standard input}\
1110 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
1111 {".h", "@c-header", 0, 0, 0},
1113 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1114 external preprocessor if -save-temps is given. */
1115 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1117 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1118 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1119 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1121 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
1122 %W{o*:--output-pch=%*}}%V}\
1123 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1124 cc1 %(cpp_unique_options) %(cc1_options)\
1125 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
1126 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
1127 {".i", "@cpp-output", 0, 0, 0},
1129 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
1130 {".s", "@assembler", 0, 0, 0},
1132 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
1133 {".sx", "@assembler-with-cpp", 0, 0, 0},
1134 {".S", "@assembler-with-cpp", 0, 0, 0},
1135 {"@assembler-with-cpp",
1136 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
1137 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1138 %{E|M|MM:%(cpp_debug_options)}\
1139 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1140 as %(asm_debug) %(asm_options) %|.s %A }}}}"
1142 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1143 %{E|M|MM:%(cpp_debug_options)}\
1144 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1145 as %(asm_debug) %(asm_options) %m.s %A }}}}"
1148 {".upc", "@upc", 0, 0, 0},
1150 /* Same as "@c" above, with the addition of %(upc_options). */
1151 "%{E|M|MM:cc1 -E %(upc_options) %(cpp_options) %(cpp_debug_options)}\
1153 %{traditional|ftraditional|traditional-cpp:\
1154 %e UPC does not support traditional compilation}\
1155 %{save-temps|no-integrated-cpp:\
1156 cc1 -E %(upc_options) %(cpp_options)\
1157 %{save-temps:%b.mi} %{!save-temps:%g.mi} \n\
1158 cc1 -fpreprocessed %{save-temps:%b.mi} %{!save-temps:%g.mi}\
1159 %(upc_options) %(cc1_options)}\
1160 %{!save-temps:%{!no-integrated-cpp:\
1161 cc1 %(cpp_unique_options) %(upc_options) %(cc1_options)}}\
1162 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
1165 /* Mark end of table. */
1169 /* Number of elements in default_compilers, not counting the terminator. */
1171 static const int n_default_compilers
= ARRAY_SIZE (default_compilers
) - 1;
1173 typedef char *char_p
; /* For DEF_VEC_P. */
1175 /* A vector of options to give to the linker.
1176 These options are accumulated by %x,
1177 and substituted into the linker command with %X. */
1178 static vec
<char_p
> linker_options
;
1180 /* A vector of options to give to the assembler.
1181 These options are accumulated by -Wa,
1182 and substituted into the assembler command with %Y. */
1183 static vec
<char_p
> assembler_options
;
1185 /* A vector of options to give to the preprocessor.
1186 These options are accumulated by -Wp,
1187 and substituted into the preprocessor command with %Z. */
1188 static vec
<char_p
> preprocessor_options
;
1191 skip_whitespace (char *p
)
1195 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1196 be considered whitespace. */
1197 if (p
[0] == '\n' && p
[1] == '\n' && p
[2] == '\n')
1199 else if (*p
== '\n' || *p
== ' ' || *p
== '\t')
1213 /* Structures to keep track of prefixes to try when looking for files. */
1217 const char *prefix
; /* String to prepend to the path. */
1218 struct prefix_list
*next
; /* Next in linked list. */
1219 int require_machine_suffix
; /* Don't use without machine_suffix. */
1220 /* 2 means try both machine_suffix and just_machine_suffix. */
1221 int priority
; /* Sort key - priority within list. */
1222 int os_multilib
; /* 1 if OS multilib scheme should be used,
1223 0 for GCC multilib scheme. */
1228 struct prefix_list
*plist
; /* List of prefixes to try */
1229 int max_len
; /* Max length of a prefix in PLIST */
1230 const char *name
; /* Name of this list (used in config stuff) */
1233 /* List of prefixes to try when looking for executables. */
1235 static struct path_prefix exec_prefixes
= { 0, 0, "exec" };
1237 /* List of prefixes to try when looking for startup (crt0) files. */
1239 static struct path_prefix startfile_prefixes
= { 0, 0, "startfile" };
1241 /* List of prefixes to try when looking for include files. */
1243 static struct path_prefix include_prefixes
= { 0, 0, "include" };
1245 /* Suffix to attach to directories searched for commands.
1246 This looks like `MACHINE/VERSION/'. */
1248 static const char *machine_suffix
= 0;
1250 /* Suffix to attach to directories searched for commands.
1251 This is just `MACHINE/'. */
1253 static const char *just_machine_suffix
= 0;
1255 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1257 static const char *gcc_exec_prefix
;
1259 /* Adjusted value of standard_libexec_prefix. */
1261 static const char *gcc_libexec_prefix
;
1263 /* Default prefixes to attach to command names. */
1265 #ifndef STANDARD_STARTFILE_PREFIX_1
1266 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1268 #ifndef STANDARD_STARTFILE_PREFIX_2
1269 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1272 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1273 #undef MD_EXEC_PREFIX
1274 #undef MD_STARTFILE_PREFIX
1275 #undef MD_STARTFILE_PREFIX_1
1278 /* If no prefixes defined, use the null string, which will disable them. */
1279 #ifndef MD_EXEC_PREFIX
1280 #define MD_EXEC_PREFIX ""
1282 #ifndef MD_STARTFILE_PREFIX
1283 #define MD_STARTFILE_PREFIX ""
1285 #ifndef MD_STARTFILE_PREFIX_1
1286 #define MD_STARTFILE_PREFIX_1 ""
1289 /* These directories are locations set at configure-time based on the
1290 --prefix option provided to configure. Their initializers are
1291 defined in Makefile.in. These paths are not *directly* used when
1292 gcc_exec_prefix is set because, in that case, we know where the
1293 compiler has been installed, and use paths relative to that
1294 location instead. */
1295 static const char *const standard_exec_prefix
= STANDARD_EXEC_PREFIX
;
1296 static const char *const standard_libexec_prefix
= STANDARD_LIBEXEC_PREFIX
;
1297 static const char *const standard_bindir_prefix
= STANDARD_BINDIR_PREFIX
;
1298 static const char *const standard_startfile_prefix
= STANDARD_STARTFILE_PREFIX
;
1300 /* For native compilers, these are well-known paths containing
1301 components that may be provided by the system. For cross
1302 compilers, these paths are not used. */
1303 static const char *md_exec_prefix
= MD_EXEC_PREFIX
;
1304 static const char *md_startfile_prefix
= MD_STARTFILE_PREFIX
;
1305 static const char *md_startfile_prefix_1
= MD_STARTFILE_PREFIX_1
;
1306 static const char *const standard_startfile_prefix_1
1307 = STANDARD_STARTFILE_PREFIX_1
;
1308 static const char *const standard_startfile_prefix_2
1309 = STANDARD_STARTFILE_PREFIX_2
;
1311 /* A relative path to be used in finding the location of tools
1312 relative to the driver. */
1313 static const char *const tooldir_base_prefix
= TOOLDIR_BASE_PREFIX
;
1315 /* Subdirectory to use for locating libraries. Set by
1316 set_multilib_dir based on the compilation options. */
1318 static const char *multilib_dir
;
1320 /* Subdirectory to use for locating libraries in OS conventions. Set by
1321 set_multilib_dir based on the compilation options. */
1323 static const char *multilib_os_dir
;
1325 /* Subdirectory to use for locating libraries in multiarch conventions. Set by
1326 set_multilib_dir based on the compilation options. */
1328 static const char *multiarch_dir
;
1330 /* Structure to keep track of the specs that have been defined so far.
1331 These are accessed using %(specname) in a compiler or link
1336 /* The following 2 fields must be first */
1337 /* to allow EXTRA_SPECS to be initialized */
1338 const char *name
; /* name of the spec. */
1339 const char *ptr
; /* available ptr if no static pointer */
1341 /* The following fields are not initialized */
1342 /* by EXTRA_SPECS */
1343 const char **ptr_spec
; /* pointer to the spec itself. */
1344 struct spec_list
*next
; /* Next spec in linked list. */
1345 int name_len
; /* length of the name */
1346 bool user_p
; /* whether string come from file spec. */
1347 bool alloc_p
; /* whether string was allocated */
1350 #define INIT_STATIC_SPEC(NAME,PTR) \
1351 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, false, false }
1353 /* List of statically defined specs. */
1354 static struct spec_list static_specs
[] =
1356 INIT_STATIC_SPEC ("asm", &asm_spec
),
1357 INIT_STATIC_SPEC ("asm_debug", &asm_debug
),
1358 INIT_STATIC_SPEC ("asm_final", &asm_final_spec
),
1359 INIT_STATIC_SPEC ("asm_options", &asm_options
),
1360 INIT_STATIC_SPEC ("invoke_as", &invoke_as
),
1361 INIT_STATIC_SPEC ("cpp", &cpp_spec
),
1362 INIT_STATIC_SPEC ("cpp_options", &cpp_options
),
1363 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options
),
1364 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options
),
1365 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp
),
1366 INIT_STATIC_SPEC ("cc1", &cc1_spec
),
1367 INIT_STATIC_SPEC ("cc1_options", &cc1_options
),
1368 INIT_STATIC_SPEC ("upc_options", &upc_options
),
1369 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec
),
1370 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec
),
1371 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec
),
1372 INIT_STATIC_SPEC ("endfile", &endfile_spec
),
1373 INIT_STATIC_SPEC ("link", &link_spec
),
1374 INIT_STATIC_SPEC ("lib", &lib_spec
),
1375 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec
),
1376 INIT_STATIC_SPEC ("upc_crtbegin", &upc_crtbegin_spec
),
1377 INIT_STATIC_SPEC ("link_upc", &link_upc_spec
),
1378 INIT_STATIC_SPEC ("upc_crtend", &upc_crtend_spec
),
1379 INIT_STATIC_SPEC ("libgcc", &libgcc_spec
),
1380 INIT_STATIC_SPEC ("startfile", &startfile_spec
),
1381 INIT_STATIC_SPEC ("cross_compile", &cross_compile
),
1382 INIT_STATIC_SPEC ("version", &compiler_version
),
1383 INIT_STATIC_SPEC ("multilib", &multilib_select
),
1384 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults
),
1385 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra
),
1386 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches
),
1387 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions
),
1388 INIT_STATIC_SPEC ("multilib_options", &multilib_options
),
1389 INIT_STATIC_SPEC ("multilib_reuse", &multilib_reuse
),
1390 INIT_STATIC_SPEC ("linker", &linker_name_spec
),
1391 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec
),
1392 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec
),
1393 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec
),
1394 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec
),
1395 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix
),
1396 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix
),
1397 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1
),
1398 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec
),
1399 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec
),
1400 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec
),
1401 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec
),
1402 INIT_STATIC_SPEC ("self_spec", &self_spec
),
1405 #ifdef EXTRA_SPECS /* additional specs needed */
1406 /* Structure to keep track of just the first two args of a spec_list.
1407 That is all that the EXTRA_SPECS macro gives us. */
1410 const char *const name
;
1411 const char *const ptr
;
1414 static const struct spec_list_1 extra_specs_1
[] = { EXTRA_SPECS
};
1415 static struct spec_list
*extra_specs
= (struct spec_list
*) 0;
1418 /* List of dynamically allocates specs that have been defined so far. */
1420 static struct spec_list
*specs
= (struct spec_list
*) 0;
1422 /* List of static spec functions. */
1424 static const struct spec_function static_spec_functions
[] =
1426 { "getenv", getenv_spec_function
},
1427 { "if-exists", if_exists_spec_function
},
1428 { "if-exists-else", if_exists_else_spec_function
},
1429 { "sanitize", sanitize_spec_function
},
1430 { "replace-outfile", replace_outfile_spec_function
},
1431 { "remove-outfile", remove_outfile_spec_function
},
1432 { "version-compare", version_compare_spec_function
},
1433 { "include", include_spec_function
},
1434 { "find-file", find_file_spec_function
},
1435 { "find-plugindir", find_plugindir_spec_function
},
1436 { "print-asm-header", print_asm_header_spec_function
},
1437 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function
},
1438 { "compare-debug-self-opt", compare_debug_self_opt_spec_function
},
1439 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function
},
1440 { "pass-through-libs", pass_through_libs_spec_func
},
1441 { "replace-extension", replace_extension_spec_func
},
1442 #ifdef EXTRA_SPEC_FUNCTIONS
1443 EXTRA_SPEC_FUNCTIONS
1448 static int processing_spec_function
;
1450 /* Add appropriate libgcc specs to OBSTACK, taking into account
1451 various permutations of -shared-libgcc, -shared, and such. */
1453 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1455 #ifndef USE_LD_AS_NEEDED
1456 #define USE_LD_AS_NEEDED 0
1460 init_gcc_specs (struct obstack
*obstack
, const char *shared_name
,
1461 const char *static_name
, const char *eh_name
)
1465 buf
= concat ("%{static|static-libgcc:", static_name
, " ", eh_name
, "}"
1466 "%{!static:%{!static-libgcc:"
1467 #if USE_LD_AS_NEEDED
1468 "%{!shared-libgcc:",
1469 static_name
, " " LD_AS_NEEDED_OPTION
" ",
1470 shared_name
, " " LD_NO_AS_NEEDED_OPTION
1473 shared_name
, "%{!shared: ", static_name
, "}"
1477 "%{!shared-libgcc:", static_name
, " ", eh_name
, "}"
1478 "%{shared-libgcc:", shared_name
, " ", static_name
, "}"
1482 "%{shared-libgcc:", shared_name
, "}"
1483 "%{!shared-libgcc:", static_name
, "}"
1486 "%{shared:", shared_name
, "}"
1491 obstack_grow (obstack
, buf
, strlen (buf
));
1494 #endif /* ENABLE_SHARED_LIBGCC */
1496 /* Initialize the specs lookup routines. */
1501 struct spec_list
*next
= (struct spec_list
*) 0;
1502 struct spec_list
*sl
= (struct spec_list
*) 0;
1506 return; /* Already initialized. */
1509 fnotice (stderr
, "Using built-in specs.\n");
1512 extra_specs
= XCNEWVEC (struct spec_list
, ARRAY_SIZE (extra_specs_1
));
1514 for (i
= ARRAY_SIZE (extra_specs_1
) - 1; i
>= 0; i
--)
1516 sl
= &extra_specs
[i
];
1517 sl
->name
= extra_specs_1
[i
].name
;
1518 sl
->ptr
= extra_specs_1
[i
].ptr
;
1520 sl
->name_len
= strlen (sl
->name
);
1521 sl
->ptr_spec
= &sl
->ptr
;
1526 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1528 sl
= &static_specs
[i
];
1533 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1534 /* ??? If neither -shared-libgcc nor --static-libgcc was
1535 seen, then we should be making an educated guess. Some proposed
1536 heuristics for ELF include:
1538 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1539 program will be doing dynamic loading, which will likely
1540 need the shared libgcc.
1542 (2) If "-ldl", then it's also a fair bet that we're doing
1545 (3) For each ET_DYN we're linking against (either through -lfoo
1546 or /some/path/foo.so), check to see whether it or one of
1547 its dependencies depends on a shared libgcc.
1551 If the runtime is fixed to look for program headers instead
1552 of calling __register_frame_info at all, for each object,
1553 use the shared libgcc if any EH symbol referenced.
1555 If crtstuff is fixed to not invoke __register_frame_info
1556 automatically, for each object, use the shared libgcc if
1557 any non-empty unwind section found.
1559 Doing any of this probably requires invoking an external program to
1560 do the actual object file scanning. */
1562 const char *p
= libgcc_spec
;
1565 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1566 when given the proper command line arguments. */
1569 if (in_sep
&& *p
== '-' && strncmp (p
, "-lgcc", 5) == 0)
1571 init_gcc_specs (&obstack
,
1573 #ifdef USE_LIBUNWIND_EXCEPTIONS
1579 #ifdef USE_LIBUNWIND_EXCEPTIONS
1580 # ifdef HAVE_LD_STATIC_DYNAMIC
1581 " %{!static:" LD_STATIC_OPTION
"} -lunwind"
1582 " %{!static:" LD_DYNAMIC_OPTION
"}"
1592 else if (in_sep
&& *p
== 'l' && strncmp (p
, "libgcc.a%s", 10) == 0)
1594 /* Ug. We don't know shared library extensions. Hope that
1595 systems that use this form don't do shared libraries. */
1596 init_gcc_specs (&obstack
,
1600 #ifdef USE_LIBUNWIND_EXCEPTIONS
1609 obstack_1grow (&obstack
, *p
);
1610 in_sep
= (*p
== ' ');
1615 obstack_1grow (&obstack
, '\0');
1616 libgcc_spec
= XOBFINISH (&obstack
, const char *);
1619 #ifdef USE_AS_TRADITIONAL_FORMAT
1620 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1622 static const char tf
[] = "--traditional-format ";
1623 obstack_grow (&obstack
, tf
, sizeof (tf
) - 1);
1624 obstack_grow0 (&obstack
, asm_spec
, strlen (asm_spec
));
1625 asm_spec
= XOBFINISH (&obstack
, const char *);
1629 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \
1630 defined LINKER_HASH_STYLE
1631 # ifdef LINK_BUILDID_SPEC
1632 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1633 obstack_grow (&obstack
, LINK_BUILDID_SPEC
, sizeof (LINK_BUILDID_SPEC
) - 1);
1635 # ifdef LINK_EH_SPEC
1636 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1637 obstack_grow (&obstack
, LINK_EH_SPEC
, sizeof (LINK_EH_SPEC
) - 1);
1639 # ifdef LINKER_HASH_STYLE
1640 /* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had
1643 static const char hash_style
[] = "--hash-style=";
1644 obstack_grow (&obstack
, hash_style
, sizeof (hash_style
) - 1);
1645 obstack_grow (&obstack
, LINKER_HASH_STYLE
, sizeof (LINKER_HASH_STYLE
) - 1);
1646 obstack_1grow (&obstack
, ' ');
1649 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
1650 link_spec
= XOBFINISH (&obstack
, const char *);
1656 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1657 removed; If the spec starts with a + then SPEC is added to the end of the
1661 set_spec (const char *name
, const char *spec
, bool user_p
)
1663 struct spec_list
*sl
;
1664 const char *old_spec
;
1665 int name_len
= strlen (name
);
1668 /* If this is the first call, initialize the statically allocated specs. */
1671 struct spec_list
*next
= (struct spec_list
*) 0;
1672 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1674 sl
= &static_specs
[i
];
1681 /* See if the spec already exists. */
1682 for (sl
= specs
; sl
; sl
= sl
->next
)
1683 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, name
))
1688 /* Not found - make it. */
1689 sl
= XNEW (struct spec_list
);
1690 sl
->name
= xstrdup (name
);
1691 sl
->name_len
= name_len
;
1692 sl
->ptr_spec
= &sl
->ptr
;
1694 *(sl
->ptr_spec
) = "";
1699 old_spec
= *(sl
->ptr_spec
);
1700 *(sl
->ptr_spec
) = ((spec
[0] == '+' && ISSPACE ((unsigned char)spec
[1]))
1701 ? concat (old_spec
, spec
+ 1, NULL
)
1706 fnotice (stderr
, "Setting spec %s to '%s'\n\n", name
, *(sl
->ptr_spec
));
1709 /* Free the old spec. */
1710 if (old_spec
&& sl
->alloc_p
)
1711 free (CONST_CAST (char *, old_spec
));
1713 sl
->user_p
= user_p
;
1717 /* Accumulate a command (program name and args), and run it. */
1719 typedef const char *const_char_p
; /* For DEF_VEC_P. */
1721 /* Vector of pointers to arguments in the current line of specifications. */
1723 static vec
<const_char_p
> argbuf
;
1725 /* Position in the argbuf vector containing the name of the output file
1726 (the value associated with the "-o" flag). */
1728 static int have_o_argbuf_index
= 0;
1730 /* Were the options -c, -S or -E passed. */
1731 static int have_c
= 0;
1733 /* Was the option -o passed. */
1734 static int have_o
= 0;
1736 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1737 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1740 static struct temp_name
{
1741 const char *suffix
; /* suffix associated with the code. */
1742 int length
; /* strlen (suffix). */
1743 int unique
; /* Indicates whether %g or %u/%U was used. */
1744 const char *filename
; /* associated filename. */
1745 int filename_length
; /* strlen (filename). */
1746 struct temp_name
*next
;
1749 /* Number of commands executed so far. */
1751 static int execution_count
;
1753 /* Number of commands that exited with a signal. */
1755 static int signal_count
;
1757 /* Allocate the argument vector. */
1765 /* Clear out the vector of arguments (after a command is executed). */
1770 argbuf
.truncate (0);
1773 /* Add one argument to the vector at the end.
1774 This is done when a space is seen or at the end of the line.
1775 If DELETE_ALWAYS is nonzero, the arg is a filename
1776 and the file should be deleted eventually.
1777 If DELETE_FAILURE is nonzero, the arg is a filename
1778 and the file should be deleted if this compilation fails. */
1781 store_arg (const char *arg
, int delete_always
, int delete_failure
)
1783 argbuf
.safe_push (arg
);
1785 if (strcmp (arg
, "-o") == 0)
1786 have_o_argbuf_index
= argbuf
.length ();
1787 if (delete_always
|| delete_failure
)
1790 /* If the temporary file we should delete is specified as
1791 part of a joined argument extract the filename. */
1793 && (p
= strrchr (arg
, '=')))
1795 record_temp_file (arg
, delete_always
, delete_failure
);
1799 /* Load specs from a file name named FILENAME, replacing occurrences of
1800 various different types of line-endings, \r\n, \n\r and just \r, with
1804 load_specs (const char *filename
)
1808 struct stat statbuf
;
1815 fnotice (stderr
, "Reading specs from %s\n", filename
);
1817 /* Open and stat the file. */
1818 desc
= open (filename
, O_RDONLY
, 0);
1820 pfatal_with_name (filename
);
1821 if (stat (filename
, &statbuf
) < 0)
1822 pfatal_with_name (filename
);
1824 /* Read contents of file into BUFFER. */
1825 buffer
= XNEWVEC (char, statbuf
.st_size
+ 1);
1826 readlen
= read (desc
, buffer
, (unsigned) statbuf
.st_size
);
1828 pfatal_with_name (filename
);
1829 buffer
[readlen
] = 0;
1832 specs
= XNEWVEC (char, readlen
+ 1);
1834 for (buffer_p
= buffer
; buffer_p
&& *buffer_p
; buffer_p
++)
1840 if (buffer_p
> buffer
&& *(buffer_p
- 1) == '\n') /* \n\r */
1842 else if (*(buffer_p
+ 1) == '\n') /* \r\n */
1856 /* Read compilation specs from a file named FILENAME,
1857 replacing the default ones.
1859 A suffix which starts with `*' is a definition for
1860 one of the machine-specific sub-specs. The "suffix" should be
1861 *asm, *cc1, *cpp, *link, *startfile, etc.
1862 The corresponding spec is stored in asm_spec, etc.,
1863 rather than in the `compilers' vector.
1865 Anything invalid in the file is a fatal error. */
1868 read_specs (const char *filename
, bool main_p
, bool user_p
)
1873 buffer
= load_specs (filename
);
1875 /* Scan BUFFER for specs, putting them in the vector. */
1881 char *in
, *out
, *p1
, *p2
, *p3
;
1883 /* Advance P in BUFFER to the next nonblank nocomment line. */
1884 p
= skip_whitespace (p
);
1888 /* Is this a special command that starts with '%'? */
1889 /* Don't allow this for the main specs file, since it would
1890 encourage people to overwrite it. */
1891 if (*p
== '%' && !main_p
)
1894 while (*p
&& *p
!= '\n')
1900 if (!strncmp (p1
, "%include", sizeof ("%include") - 1)
1901 && (p1
[sizeof "%include" - 1] == ' '
1902 || p1
[sizeof "%include" - 1] == '\t'))
1906 p1
+= sizeof ("%include");
1907 while (*p1
== ' ' || *p1
== '\t')
1910 if (*p1
++ != '<' || p
[-2] != '>')
1911 fatal_error ("specs %%include syntax malformed after "
1913 (long) (p1
- buffer
+ 1));
1916 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1917 read_specs (new_filename
? new_filename
: p1
, false, user_p
);
1920 else if (!strncmp (p1
, "%include_noerr", sizeof "%include_noerr" - 1)
1921 && (p1
[sizeof "%include_noerr" - 1] == ' '
1922 || p1
[sizeof "%include_noerr" - 1] == '\t'))
1926 p1
+= sizeof "%include_noerr";
1927 while (*p1
== ' ' || *p1
== '\t')
1930 if (*p1
++ != '<' || p
[-2] != '>')
1931 fatal_error ("specs %%include syntax malformed after "
1933 (long) (p1
- buffer
+ 1));
1936 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1938 read_specs (new_filename
, false, user_p
);
1939 else if (verbose_flag
)
1940 fnotice (stderr
, "could not find specs file %s\n", p1
);
1943 else if (!strncmp (p1
, "%rename", sizeof "%rename" - 1)
1944 && (p1
[sizeof "%rename" - 1] == ' '
1945 || p1
[sizeof "%rename" - 1] == '\t'))
1948 struct spec_list
*sl
;
1949 struct spec_list
*newsl
;
1951 /* Get original name. */
1952 p1
+= sizeof "%rename";
1953 while (*p1
== ' ' || *p1
== '\t')
1956 if (! ISALPHA ((unsigned char) *p1
))
1957 fatal_error ("specs %%rename syntax malformed after "
1959 (long) (p1
- buffer
));
1962 while (*p2
&& !ISSPACE ((unsigned char) *p2
))
1965 if (*p2
!= ' ' && *p2
!= '\t')
1966 fatal_error ("specs %%rename syntax malformed after "
1968 (long) (p2
- buffer
));
1972 while (*p2
== ' ' || *p2
== '\t')
1975 if (! ISALPHA ((unsigned char) *p2
))
1976 fatal_error ("specs %%rename syntax malformed after "
1978 (long) (p2
- buffer
));
1980 /* Get new spec name. */
1982 while (*p3
&& !ISSPACE ((unsigned char) *p3
))
1986 fatal_error ("specs %%rename syntax malformed after "
1988 (long) (p3
- buffer
));
1991 for (sl
= specs
; sl
; sl
= sl
->next
)
1992 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, p1
))
1996 fatal_error ("specs %s spec was not found to be renamed", p1
);
1998 if (strcmp (p1
, p2
) == 0)
2001 for (newsl
= specs
; newsl
; newsl
= newsl
->next
)
2002 if (strcmp (newsl
->name
, p2
) == 0)
2003 fatal_error ("%s: attempt to rename spec %qs to "
2004 "already defined spec %qs",
2009 fnotice (stderr
, "rename spec %s to %s\n", p1
, p2
);
2011 fnotice (stderr
, "spec is '%s'\n\n", *(sl
->ptr_spec
));
2015 set_spec (p2
, *(sl
->ptr_spec
), user_p
);
2017 free (CONST_CAST (char *, *(sl
->ptr_spec
)));
2019 *(sl
->ptr_spec
) = "";
2024 fatal_error ("specs unknown %% command after %ld characters",
2025 (long) (p1
- buffer
));
2028 /* Find the colon that should end the suffix. */
2030 while (*p1
&& *p1
!= ':' && *p1
!= '\n')
2033 /* The colon shouldn't be missing. */
2035 fatal_error ("specs file malformed after %ld characters",
2036 (long) (p1
- buffer
));
2038 /* Skip back over trailing whitespace. */
2040 while (p2
> buffer
&& (p2
[-1] == ' ' || p2
[-1] == '\t'))
2043 /* Copy the suffix to a string. */
2044 suffix
= save_string (p
, p2
- p
);
2045 /* Find the next line. */
2046 p
= skip_whitespace (p1
+ 1);
2048 fatal_error ("specs file malformed after %ld characters",
2049 (long) (p
- buffer
));
2052 /* Find next blank line or end of string. */
2053 while (*p1
&& !(*p1
== '\n' && (p1
[1] == '\n' || p1
[1] == '\0')))
2056 /* Specs end at the blank line and do not include the newline. */
2057 spec
= save_string (p
, p1
- p
);
2060 /* Delete backslash-newline sequences from the spec. */
2065 if (in
[0] == '\\' && in
[1] == '\n')
2067 else if (in
[0] == '#')
2068 while (*in
&& *in
!= '\n')
2076 if (suffix
[0] == '*')
2078 if (! strcmp (suffix
, "*link_command"))
2079 link_command_spec
= spec
;
2081 set_spec (suffix
+ 1, spec
, user_p
);
2085 /* Add this pair to the vector. */
2087 = XRESIZEVEC (struct compiler
, compilers
, n_compilers
+ 2);
2089 compilers
[n_compilers
].suffix
= suffix
;
2090 compilers
[n_compilers
].spec
= spec
;
2092 memset (&compilers
[n_compilers
], 0, sizeof compilers
[n_compilers
]);
2096 link_command_spec
= spec
;
2099 if (link_command_spec
== 0)
2100 fatal_error ("spec file has no spec for linking");
2103 /* Record the names of temporary files we tell compilers to write,
2104 and delete them at the end of the run. */
2106 /* This is the common prefix we use to make temp file names.
2107 It is chosen once for each run of this program.
2108 It is substituted into a spec by %g or %j.
2109 Thus, all temp file names contain this prefix.
2110 In practice, all temp file names start with this prefix.
2112 This prefix comes from the envvar TMPDIR if it is defined;
2113 otherwise, from the P_tmpdir macro if that is defined;
2114 otherwise, in /usr/tmp or /tmp;
2115 or finally the current directory if all else fails. */
2117 static const char *temp_filename
;
2119 /* Length of the prefix. */
2121 static int temp_filename_length
;
2123 /* Define the list of temporary files to delete. */
2128 struct temp_file
*next
;
2131 /* Queue of files to delete on success or failure of compilation. */
2132 static struct temp_file
*always_delete_queue
;
2133 /* Queue of files to delete on failure of compilation. */
2134 static struct temp_file
*failure_delete_queue
;
2136 /* Record FILENAME as a file to be deleted automatically.
2137 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2138 otherwise delete it in any case.
2139 FAIL_DELETE nonzero means delete it if a compilation step fails;
2140 otherwise delete it in any case. */
2143 record_temp_file (const char *filename
, int always_delete
, int fail_delete
)
2145 char *const name
= xstrdup (filename
);
2149 struct temp_file
*temp
;
2150 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
2151 if (! filename_cmp (name
, temp
->name
))
2154 temp
= XNEW (struct temp_file
);
2155 temp
->next
= always_delete_queue
;
2157 always_delete_queue
= temp
;
2164 struct temp_file
*temp
;
2165 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
2166 if (! filename_cmp (name
, temp
->name
))
2172 temp
= XNEW (struct temp_file
);
2173 temp
->next
= failure_delete_queue
;
2175 failure_delete_queue
= temp
;
2181 /* Delete all the temporary files whose names we previously recorded. */
2183 #ifndef DELETE_IF_ORDINARY
2184 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2187 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2188 if (unlink (NAME) < 0) \
2190 perror_with_name (NAME); \
2195 delete_if_ordinary (const char *name
)
2201 printf ("Delete %s? (y or n) ", name
);
2205 while ((c
= getchar ()) != '\n' && c
!= EOF
)
2208 if (i
== 'y' || i
== 'Y')
2210 DELETE_IF_ORDINARY (name
, st
, verbose_flag
);
2214 delete_temp_files (void)
2216 struct temp_file
*temp
;
2218 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
2219 delete_if_ordinary (temp
->name
);
2220 always_delete_queue
= 0;
2223 /* Delete all the files to be deleted on error. */
2226 delete_failure_queue (void)
2228 struct temp_file
*temp
;
2230 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
2231 delete_if_ordinary (temp
->name
);
2235 clear_failure_queue (void)
2237 failure_delete_queue
= 0;
2240 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2242 If DO_MULTI is true iterate over the paths twice, first with multilib
2243 suffix then without, otherwise iterate over the paths once without
2244 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2245 to avoid visiting the same path twice, but we could do better. For
2246 instance, /usr/lib/../lib is considered different from /usr/lib.
2247 At least EXTRA_SPACE chars past the end of the path passed to
2248 CALLBACK are available for use by the callback.
2249 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2251 Returns the value returned by CALLBACK. */
2254 for_each_path (const struct path_prefix
*paths
,
2257 void *(*callback
) (char *, void *),
2258 void *callback_info
)
2260 struct prefix_list
*pl
;
2261 const char *multi_dir
= NULL
;
2262 const char *multi_os_dir
= NULL
;
2263 const char *multiarch_suffix
= NULL
;
2264 const char *multi_suffix
;
2265 const char *just_multi_suffix
;
2268 bool skip_multi_dir
= false;
2269 bool skip_multi_os_dir
= false;
2271 multi_suffix
= machine_suffix
;
2272 just_multi_suffix
= just_machine_suffix
;
2273 if (do_multi
&& multilib_dir
&& strcmp (multilib_dir
, ".") != 0)
2275 multi_dir
= concat (multilib_dir
, dir_separator_str
, NULL
);
2276 multi_suffix
= concat (multi_suffix
, multi_dir
, NULL
);
2277 just_multi_suffix
= concat (just_multi_suffix
, multi_dir
, NULL
);
2279 if (do_multi
&& multilib_os_dir
&& strcmp (multilib_os_dir
, ".") != 0)
2280 multi_os_dir
= concat (multilib_os_dir
, dir_separator_str
, NULL
);
2282 multiarch_suffix
= concat (multiarch_dir
, dir_separator_str
, NULL
);
2286 size_t multi_dir_len
= 0;
2287 size_t multi_os_dir_len
= 0;
2288 size_t multiarch_len
= 0;
2290 size_t just_suffix_len
;
2294 multi_dir_len
= strlen (multi_dir
);
2296 multi_os_dir_len
= strlen (multi_os_dir
);
2297 if (multiarch_suffix
)
2298 multiarch_len
= strlen (multiarch_suffix
);
2299 suffix_len
= strlen (multi_suffix
);
2300 just_suffix_len
= strlen (just_multi_suffix
);
2304 len
= paths
->max_len
+ extra_space
+ 1;
2305 len
+= MAX (MAX (suffix_len
, multi_os_dir_len
), multiarch_len
);
2306 path
= XNEWVEC (char, len
);
2309 for (pl
= paths
->plist
; pl
!= 0; pl
= pl
->next
)
2311 len
= strlen (pl
->prefix
);
2312 memcpy (path
, pl
->prefix
, len
);
2314 /* Look first in MACHINE/VERSION subdirectory. */
2315 if (!skip_multi_dir
)
2317 memcpy (path
+ len
, multi_suffix
, suffix_len
+ 1);
2318 ret
= callback (path
, callback_info
);
2323 /* Some paths are tried with just the machine (ie. target)
2324 subdir. This is used for finding as, ld, etc. */
2326 && pl
->require_machine_suffix
== 2)
2328 memcpy (path
+ len
, just_multi_suffix
, just_suffix_len
+ 1);
2329 ret
= callback (path
, callback_info
);
2334 /* Now try the multiarch path. */
2336 && !pl
->require_machine_suffix
&& multiarch_dir
)
2338 memcpy (path
+ len
, multiarch_suffix
, multiarch_len
+ 1);
2339 ret
= callback (path
, callback_info
);
2344 /* Now try the base path. */
2345 if (!pl
->require_machine_suffix
2346 && !(pl
->os_multilib
? skip_multi_os_dir
: skip_multi_dir
))
2348 const char *this_multi
;
2349 size_t this_multi_len
;
2351 if (pl
->os_multilib
)
2353 this_multi
= multi_os_dir
;
2354 this_multi_len
= multi_os_dir_len
;
2358 this_multi
= multi_dir
;
2359 this_multi_len
= multi_dir_len
;
2363 memcpy (path
+ len
, this_multi
, this_multi_len
+ 1);
2367 ret
= callback (path
, callback_info
);
2375 if (multi_dir
== NULL
&& multi_os_dir
== NULL
)
2378 /* Run through the paths again, this time without multilibs.
2379 Don't repeat any we have already seen. */
2382 free (CONST_CAST (char *, multi_dir
));
2384 free (CONST_CAST (char *, multi_suffix
));
2385 multi_suffix
= machine_suffix
;
2386 free (CONST_CAST (char *, just_multi_suffix
));
2387 just_multi_suffix
= just_machine_suffix
;
2390 skip_multi_dir
= true;
2393 free (CONST_CAST (char *, multi_os_dir
));
2394 multi_os_dir
= NULL
;
2397 skip_multi_os_dir
= true;
2402 free (CONST_CAST (char *, multi_dir
));
2403 free (CONST_CAST (char *, multi_suffix
));
2404 free (CONST_CAST (char *, just_multi_suffix
));
2407 free (CONST_CAST (char *, multi_os_dir
));
2413 /* Callback for build_search_list. Adds path to obstack being built. */
2415 struct add_to_obstack_info
{
2422 add_to_obstack (char *path
, void *data
)
2424 struct add_to_obstack_info
*info
= (struct add_to_obstack_info
*) data
;
2426 if (info
->check_dir
&& !is_directory (path
, false))
2429 if (!info
->first_time
)
2430 obstack_1grow (info
->ob
, PATH_SEPARATOR
);
2432 obstack_grow (info
->ob
, path
, strlen (path
));
2434 info
->first_time
= false;
2438 /* Add or change the value of an environment variable, outputting the
2439 change to standard error if in verbose mode. */
2441 xputenv (const char *string
)
2444 fnotice (stderr
, "%s\n", string
);
2445 putenv (CONST_CAST (char *, string
));
2448 /* Build a list of search directories from PATHS.
2449 PREFIX is a string to prepend to the list.
2450 If CHECK_DIR_P is true we ensure the directory exists.
2451 If DO_MULTI is true, multilib paths are output first, then
2453 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2454 It is also used by the --print-search-dirs flag. */
2457 build_search_list (const struct path_prefix
*paths
, const char *prefix
,
2458 bool check_dir
, bool do_multi
)
2460 struct add_to_obstack_info info
;
2462 info
.ob
= &collect_obstack
;
2463 info
.check_dir
= check_dir
;
2464 info
.first_time
= true;
2466 obstack_grow (&collect_obstack
, prefix
, strlen (prefix
));
2467 obstack_1grow (&collect_obstack
, '=');
2469 for_each_path (paths
, do_multi
, 0, add_to_obstack
, &info
);
2471 obstack_1grow (&collect_obstack
, '\0');
2472 return XOBFINISH (&collect_obstack
, char *);
2475 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2479 putenv_from_prefixes (const struct path_prefix
*paths
, const char *env_var
,
2482 xputenv (build_search_list (paths
, env_var
, true, do_multi
));
2485 /* Check whether NAME can be accessed in MODE. This is like access,
2486 except that it never considers directories to be executable. */
2489 access_check (const char *name
, int mode
)
2495 if (stat (name
, &st
) < 0
2496 || S_ISDIR (st
.st_mode
))
2500 return access (name
, mode
);
2503 /* Callback for find_a_file. Appends the file name to the directory
2504 path. If the resulting file exists in the right mode, return the
2505 full pathname to the file. */
2507 struct file_at_path_info
{
2516 file_at_path (char *path
, void *data
)
2518 struct file_at_path_info
*info
= (struct file_at_path_info
*) data
;
2519 size_t len
= strlen (path
);
2521 memcpy (path
+ len
, info
->name
, info
->name_len
);
2522 len
+= info
->name_len
;
2524 /* Some systems have a suffix for executable files.
2525 So try appending that first. */
2526 if (info
->suffix_len
)
2528 memcpy (path
+ len
, info
->suffix
, info
->suffix_len
+ 1);
2529 if (access_check (path
, info
->mode
) == 0)
2534 if (access_check (path
, info
->mode
) == 0)
2540 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2541 access to check permissions. If DO_MULTI is true, search multilib
2542 paths then non-multilib paths, otherwise do not search multilib paths.
2543 Return 0 if not found, otherwise return its name, allocated with malloc. */
2546 find_a_file (const struct path_prefix
*pprefix
, const char *name
, int mode
,
2549 struct file_at_path_info info
;
2551 #ifdef DEFAULT_ASSEMBLER
2552 if (! strcmp (name
, "as") && access (DEFAULT_ASSEMBLER
, mode
) == 0)
2553 return xstrdup (DEFAULT_ASSEMBLER
);
2556 #ifdef DEFAULT_LINKER
2557 if (! strcmp (name
, "ld") && access (DEFAULT_LINKER
, mode
) == 0)
2558 return xstrdup (DEFAULT_LINKER
);
2561 /* Determine the filename to execute (special case for absolute paths). */
2563 if (IS_ABSOLUTE_PATH (name
))
2565 if (access (name
, mode
) == 0)
2566 return xstrdup (name
);
2572 info
.suffix
= (mode
& X_OK
) != 0 ? HOST_EXECUTABLE_SUFFIX
: "";
2573 info
.name_len
= strlen (info
.name
);
2574 info
.suffix_len
= strlen (info
.suffix
);
2577 return (char*) for_each_path (pprefix
, do_multi
,
2578 info
.name_len
+ info
.suffix_len
,
2579 file_at_path
, &info
);
2582 /* Ranking of prefixes in the sort list. -B prefixes are put before
2585 enum path_prefix_priority
2587 PREFIX_PRIORITY_B_OPT
,
2588 PREFIX_PRIORITY_LAST
2591 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2592 order according to PRIORITY. Within each PRIORITY, new entries are
2595 If WARN is nonzero, we will warn if no file is found
2596 through this prefix. WARN should point to an int
2597 which will be set to 1 if this entry is used.
2599 COMPONENT is the value to be passed to update_path.
2601 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2602 the complete value of machine_suffix.
2603 2 means try both machine_suffix and just_machine_suffix. */
2606 add_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2607 const char *component
, /* enum prefix_priority */ int priority
,
2608 int require_machine_suffix
, int os_multilib
)
2610 struct prefix_list
*pl
, **prev
;
2613 for (prev
= &pprefix
->plist
;
2614 (*prev
) != NULL
&& (*prev
)->priority
<= priority
;
2615 prev
= &(*prev
)->next
)
2618 /* Keep track of the longest prefix. */
2620 prefix
= update_path (prefix
, component
);
2621 len
= strlen (prefix
);
2622 if (len
> pprefix
->max_len
)
2623 pprefix
->max_len
= len
;
2625 pl
= XNEW (struct prefix_list
);
2626 pl
->prefix
= prefix
;
2627 pl
->require_machine_suffix
= require_machine_suffix
;
2628 pl
->priority
= priority
;
2629 pl
->os_multilib
= os_multilib
;
2631 /* Insert after PREV. */
2636 /* Same as add_prefix, but prepending target_system_root to prefix. */
2637 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2639 add_sysrooted_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2640 const char *component
,
2641 /* enum prefix_priority */ int priority
,
2642 int require_machine_suffix
, int os_multilib
)
2644 if (!IS_ABSOLUTE_PATH (prefix
))
2645 fatal_error ("system path %qs is not absolute", prefix
);
2647 if (target_system_root
)
2649 char *sysroot_no_trailing_dir_separator
= xstrdup (target_system_root
);
2650 size_t sysroot_len
= strlen (target_system_root
);
2653 && target_system_root
[sysroot_len
- 1] == DIR_SEPARATOR
)
2654 sysroot_no_trailing_dir_separator
[sysroot_len
- 1] = '\0';
2656 if (target_sysroot_suffix
)
2657 prefix
= concat (sysroot_no_trailing_dir_separator
,
2658 target_sysroot_suffix
, prefix
, NULL
);
2660 prefix
= concat (sysroot_no_trailing_dir_separator
, prefix
, NULL
);
2662 free (sysroot_no_trailing_dir_separator
);
2664 /* We have to override this because GCC's notion of sysroot
2665 moves along with GCC. */
2669 add_prefix (pprefix
, prefix
, component
, priority
,
2670 require_machine_suffix
, os_multilib
);
2673 /* Execute the command specified by the arguments on the current line of spec.
2674 When using pipes, this includes several piped-together commands
2675 with `|' between them.
2677 Return 0 if successful, -1 if failed. */
2683 int n_commands
; /* # of command. */
2685 struct pex_obj
*pex
;
2688 const char *prog
; /* program name. */
2689 const char **argv
; /* vector of args. */
2693 struct command
*commands
; /* each command buffer with above info. */
2695 gcc_assert (!processing_spec_function
);
2699 string
= find_a_file (&exec_prefixes
,
2700 argbuf
[0], X_OK
, false);
2703 insert_wrapper (wrapper_string
);
2706 /* Count # of piped commands. */
2707 for (n_commands
= 1, i
= 0; argbuf
.iterate (i
, &arg
); i
++)
2708 if (strcmp (arg
, "|") == 0)
2711 /* Get storage for each command. */
2712 commands
= (struct command
*) alloca (n_commands
* sizeof (struct command
));
2714 /* Split argbuf into its separate piped processes,
2715 and record info about each one.
2716 Also search for the programs that are to be run. */
2718 argbuf
.safe_push (0);
2720 commands
[0].prog
= argbuf
[0]; /* first command. */
2721 commands
[0].argv
= argbuf
.address ();
2723 if (!wrapper_string
)
2725 string
= find_a_file (&exec_prefixes
, commands
[0].prog
, X_OK
, false);
2726 commands
[0].argv
[0] = (string
) ? string
: commands
[0].argv
[0];
2729 for (n_commands
= 1, i
= 0; argbuf
.iterate (i
, &arg
); i
++)
2730 if (arg
&& strcmp (arg
, "|") == 0)
2731 { /* each command. */
2732 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2733 fatal_error ("-pipe not supported");
2735 argbuf
[i
] = 0; /* Termination of
2737 commands
[n_commands
].prog
= argbuf
[i
+ 1];
2738 commands
[n_commands
].argv
2739 = &(argbuf
.address ())[i
+ 1];
2740 string
= find_a_file (&exec_prefixes
, commands
[n_commands
].prog
,
2743 commands
[n_commands
].argv
[0] = string
;
2747 /* If -v, print what we are about to do, and maybe query. */
2751 /* For help listings, put a blank line between sub-processes. */
2752 if (print_help_list
)
2753 fputc ('\n', stderr
);
2755 /* Print each piped command as a separate line. */
2756 for (i
= 0; i
< n_commands
; i
++)
2758 const char *const *j
;
2760 if (verbose_only_flag
)
2762 for (j
= commands
[i
].argv
; *j
; j
++)
2765 for (p
= *j
; *p
; ++p
)
2766 if (!ISALNUM ((unsigned char) *p
)
2767 && *p
!= '_' && *p
!= '/' && *p
!= '-' && *p
!= '.')
2771 fprintf (stderr
, " \"");
2772 for (p
= *j
; *p
; ++p
)
2774 if (*p
== '"' || *p
== '\\' || *p
== '$')
2775 fputc ('\\', stderr
);
2778 fputc ('"', stderr
);
2780 /* If it's empty, print "". */
2782 fprintf (stderr
, " \"\"");
2784 fprintf (stderr
, " %s", *j
);
2788 for (j
= commands
[i
].argv
; *j
; j
++)
2789 /* If it's empty, print "". */
2791 fprintf (stderr
, " \"\"");
2793 fprintf (stderr
, " %s", *j
);
2795 /* Print a pipe symbol after all but the last command. */
2796 if (i
+ 1 != n_commands
)
2797 fprintf (stderr
, " |");
2798 fprintf (stderr
, "\n");
2801 if (verbose_only_flag
!= 0)
2803 /* verbose_only_flag should act as if the spec was
2804 executed, so increment execution_count before
2805 returning. This prevents spurious warnings about
2806 unused linker input files, etc. */
2811 fnotice (stderr
, "\nGo ahead? (y or n) ");
2815 while (getchar () != '\n')
2818 if (i
!= 'y' && i
!= 'Y')
2823 #ifdef ENABLE_VALGRIND_CHECKING
2824 /* Run the each command through valgrind. To simplify prepending the
2825 path to valgrind and the option "-q" (for quiet operation unless
2826 something triggers), we allocate a separate argv array. */
2828 for (i
= 0; i
< n_commands
; i
++)
2834 for (argc
= 0; commands
[i
].argv
[argc
] != NULL
; argc
++)
2837 argv
= XALLOCAVEC (const char *, argc
+ 3);
2839 argv
[0] = VALGRIND_PATH
;
2841 for (j
= 2; j
< argc
+ 2; j
++)
2842 argv
[j
] = commands
[i
].argv
[j
- 2];
2845 commands
[i
].argv
= argv
;
2846 commands
[i
].prog
= argv
[0];
2850 /* Run each piped subprocess. */
2852 pex
= pex_init (PEX_USE_PIPES
| ((report_times
|| report_times_to_file
)
2853 ? PEX_RECORD_TIMES
: 0),
2854 progname
, temp_filename
);
2856 fatal_error ("pex_init failed: %m");
2858 for (i
= 0; i
< n_commands
; i
++)
2862 const char *string
= commands
[i
].argv
[0];
2864 errmsg
= pex_run (pex
,
2865 ((i
+ 1 == n_commands
? PEX_LAST
: 0)
2866 | (string
== commands
[i
].prog
? PEX_SEARCH
: 0)),
2867 string
, CONST_CAST (char **, commands
[i
].argv
),
2872 fatal_error (errmsg
);
2876 pfatal_with_name (errmsg
);
2880 if (string
!= commands
[i
].prog
)
2881 free (CONST_CAST (char *, string
));
2886 /* Wait for all the subprocesses to finish. */
2890 struct pex_time
*times
= NULL
;
2893 statuses
= (int *) alloca (n_commands
* sizeof (int));
2894 if (!pex_get_status (pex
, n_commands
, statuses
))
2895 fatal_error ("failed to get exit status: %m");
2897 if (report_times
|| report_times_to_file
)
2899 times
= (struct pex_time
*) alloca (n_commands
* sizeof (struct pex_time
));
2900 if (!pex_get_times (pex
, n_commands
, times
))
2901 fatal_error ("failed to get process times: %m");
2906 for (i
= 0; i
< n_commands
; ++i
)
2908 int status
= statuses
[i
];
2910 if (WIFSIGNALED (status
))
2913 /* SIGPIPE is a special case. It happens in -pipe mode
2914 when the compiler dies before the preprocessor is done,
2915 or the assembler dies before the compiler is done.
2916 There's generally been an error already, and this is
2917 just fallout. So don't generate another error unless
2918 we would otherwise have succeeded. */
2919 if (WTERMSIG (status
) == SIGPIPE
2920 && (signal_count
|| greatest_status
>= MIN_FATAL_STATUS
))
2927 internal_error ("%s (program %s)",
2928 strsignal (WTERMSIG (status
)), commands
[i
].prog
);
2930 else if (WIFEXITED (status
)
2931 && WEXITSTATUS (status
) >= MIN_FATAL_STATUS
)
2933 if (WEXITSTATUS (status
) > greatest_status
)
2934 greatest_status
= WEXITSTATUS (status
);
2938 if (report_times
|| report_times_to_file
)
2940 struct pex_time
*pt
= ×
[i
];
2943 ut
= ((double) pt
->user_seconds
2944 + (double) pt
->user_microseconds
/ 1.0e6
);
2945 st
= ((double) pt
->system_seconds
2946 + (double) pt
->system_microseconds
/ 1.0e6
);
2951 fnotice (stderr
, "# %s %.2f %.2f\n",
2952 commands
[i
].prog
, ut
, st
);
2954 if (report_times_to_file
)
2957 const char *const *j
;
2959 fprintf (report_times_to_file
, "%g %g", ut
, st
);
2961 for (j
= &commands
[i
].prog
; *j
; j
= &commands
[i
].argv
[++c
])
2964 for (p
= *j
; *p
; ++p
)
2965 if (*p
== '"' || *p
== '\\' || *p
== '$'
2971 fprintf (report_times_to_file
, " \"");
2972 for (p
= *j
; *p
; ++p
)
2974 if (*p
== '"' || *p
== '\\' || *p
== '$')
2975 fputc ('\\', report_times_to_file
);
2976 fputc (*p
, report_times_to_file
);
2978 fputc ('"', report_times_to_file
);
2981 fprintf (report_times_to_file
, " %s", *j
);
2984 fputc ('\n', report_times_to_file
);
2994 /* Find all the switches given to us
2995 and make a vector describing them.
2996 The elements of the vector are strings, one per switch given.
2997 If a switch uses following arguments, then the `part1' field
2998 is the switch itself and the `args' field
2999 is a null-terminated vector containing the following arguments.
3000 Bits in the `live_cond' field are:
3001 SWITCH_LIVE to indicate this switch is true in a conditional spec.
3002 SWITCH_FALSE to indicate this switch is overridden by a later switch.
3003 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
3004 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
3005 in all do_spec calls afterwards. Used for %<S from self specs.
3006 The `validated' field is nonzero if any spec has looked at this switch;
3007 if it remains zero at the end of the run, it must be meaningless. */
3009 #define SWITCH_LIVE (1 << 0)
3010 #define SWITCH_FALSE (1 << 1)
3011 #define SWITCH_IGNORE (1 << 2)
3012 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
3013 #define SWITCH_KEEP_FOR_GCC (1 << 4)
3019 unsigned int live_cond
;
3025 static struct switchstr
*switches
;
3027 static int n_switches
;
3029 static int n_switches_alloc
;
3031 /* Set to zero if -fcompare-debug is disabled, positive if it's
3032 enabled and we're running the first compilation, negative if it's
3033 enabled and we're running the second compilation. For most of the
3034 time, it's in the range -1..1, but it can be temporarily set to 2
3035 or 3 to indicate that the -fcompare-debug flags didn't come from
3036 the command-line, but rather from the GCC_COMPARE_DEBUG environment
3037 variable, until a synthesized -fcompare-debug flag is added to the
3041 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
3042 int compare_debug_second
;
3044 /* Set to the flags that should be passed to the second compilation in
3045 a -fcompare-debug compilation. */
3046 const char *compare_debug_opt
;
3048 static struct switchstr
*switches_debug_check
[2];
3050 static int n_switches_debug_check
[2];
3052 static int n_switches_alloc_debug_check
[2];
3054 static char *debug_check_temp_file
[2];
3056 /* Language is one of three things:
3058 1) The name of a real programming language.
3059 2) NULL, indicating that no one has figured out
3061 3) '*', indicating that the file should be passed
3066 const char *language
;
3067 struct compiler
*incompiler
;
3072 /* Also a vector of input files specified. */
3074 static struct infile
*infiles
;
3078 static int n_infiles_alloc
;
3080 /* True if multiple input files are being compiled to a single
3083 static bool combine_inputs
;
3085 /* This counts the number of libraries added by lang_specific_driver, so that
3086 we can tell if there were any user supplied any files or libraries. */
3088 static int added_libraries
;
3090 /* And a vector of corresponding output files is made up later. */
3092 const char **outfiles
;
3094 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3096 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
3097 is true if we should look for an executable suffix. DO_OBJ
3098 is true if we should look for an object suffix. */
3101 convert_filename (const char *name
, int do_exe ATTRIBUTE_UNUSED
,
3102 int do_obj ATTRIBUTE_UNUSED
)
3104 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3112 len
= strlen (name
);
3114 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3115 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
3116 if (do_obj
&& len
> 2
3117 && name
[len
- 2] == '.'
3118 && name
[len
- 1] == 'o')
3120 obstack_grow (&obstack
, name
, len
- 2);
3121 obstack_grow0 (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
3122 name
= XOBFINISH (&obstack
, const char *);
3126 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3127 /* If there is no filetype, make it the executable suffix (which includes
3128 the "."). But don't get confused if we have just "-o". */
3129 if (! do_exe
|| TARGET_EXECUTABLE_SUFFIX
[0] == 0 || (len
== 2 && name
[0] == '-'))
3132 for (i
= len
- 1; i
>= 0; i
--)
3133 if (IS_DIR_SEPARATOR (name
[i
]))
3136 for (i
++; i
< len
; i
++)
3140 obstack_grow (&obstack
, name
, len
);
3141 obstack_grow0 (&obstack
, TARGET_EXECUTABLE_SUFFIX
,
3142 strlen (TARGET_EXECUTABLE_SUFFIX
));
3143 name
= XOBFINISH (&obstack
, const char *);
3150 /* Display the command line switches accepted by gcc. */
3154 printf (_("Usage: %s [options] file...\n"), progname
);
3155 fputs (_("Options:\n"), stdout
);
3157 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout
);
3158 fputs (_(" --help Display this information\n"), stdout
);
3159 fputs (_(" --target-help Display target specific command line options\n"), stdout
);
3160 fputs (_(" --help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumented}}[,...]\n"), stdout
);
3161 fputs (_(" Display specific types of command line options\n"), stdout
);
3163 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout
);
3164 fputs (_(" --version Display compiler version information\n"), stdout
);
3165 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout
);
3166 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout
);
3167 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout
);
3168 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout
);
3169 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout
);
3170 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout
);
3171 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout
);
3173 -print-multiarch Display the target's normalized GNU triplet, used as\n\
3174 a component in the library path\n"), stdout
);
3175 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout
);
3177 -print-multi-lib Display the mapping between command line options and\n\
3178 multiple library search directories\n"), stdout
);
3179 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout
);
3180 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout
);
3181 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout
);
3182 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout
);
3183 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout
);
3184 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout
);
3185 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout
);
3186 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout
);
3187 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout
);
3188 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout
);
3189 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout
);
3191 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
3192 prefixes to other gcc components\n"), stdout
);
3193 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout
);
3194 fputs (_(" -time Time the execution of each subprocess\n"), stdout
);
3195 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout
);
3196 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout
);
3198 --sysroot=<directory> Use <directory> as the root directory for headers\n\
3199 and libraries\n"), stdout
);
3200 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout
);
3201 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout
);
3202 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout
);
3203 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout
);
3204 fputs (_(" -S Compile only; do not assemble or link\n"), stdout
);
3205 fputs (_(" -c Compile and assemble, but do not link\n"), stdout
);
3206 fputs (_(" -o <file> Place the output into <file>\n"), stdout
);
3207 fputs (_(" -pie Create a position independent executable\n"), stdout
);
3208 fputs (_(" -shared Create a shared library\n"), stdout
);
3210 -x <language> Specify the language of the following input files\n\
3211 Permissible languages include: c c++ assembler none\n\
3212 'none' means revert to the default behavior of\n\
3213 guessing the language based on the file's extension\n\
3217 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3218 passed on to the various sub-processes invoked by %s. In order to pass\n\
3219 other options on to these processes the -W<letter> options must be used.\n\
3222 /* The rest of the options are displayed by invocations of the various
3227 add_preprocessor_option (const char *option
, int len
)
3229 preprocessor_options
.safe_push (save_string (option
, len
));
3233 add_assembler_option (const char *option
, int len
)
3235 assembler_options
.safe_push (save_string (option
, len
));
3239 add_linker_option (const char *option
, int len
)
3241 linker_options
.safe_push (save_string (option
, len
));
3244 /* Allocate space for an input file in infiles. */
3249 if (n_infiles_alloc
== 0)
3251 n_infiles_alloc
= 16;
3252 infiles
= XNEWVEC (struct infile
, n_infiles_alloc
);
3254 else if (n_infiles_alloc
== n_infiles
)
3256 n_infiles_alloc
*= 2;
3257 infiles
= XRESIZEVEC (struct infile
, infiles
, n_infiles_alloc
);
3261 /* Store an input file with the given NAME and LANGUAGE in
3265 add_infile (const char *name
, const char *language
)
3268 infiles
[n_infiles
].name
= name
;
3269 infiles
[n_infiles
++].language
= language
;
3272 /* Allocate space for a switch in switches. */
3277 if (n_switches_alloc
== 0)
3279 n_switches_alloc
= 16;
3280 switches
= XNEWVEC (struct switchstr
, n_switches_alloc
);
3282 else if (n_switches_alloc
== n_switches
)
3284 n_switches_alloc
*= 2;
3285 switches
= XRESIZEVEC (struct switchstr
, switches
, n_switches_alloc
);
3289 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3290 as validated if VALIDATED and KNOWN if it is an internal switch. */
3293 save_switch (const char *opt
, size_t n_args
, const char *const *args
,
3294 bool validated
, bool known
)
3297 switches
[n_switches
].part1
= opt
+ 1;
3299 switches
[n_switches
].args
= 0;
3302 switches
[n_switches
].args
= XNEWVEC (const char *, n_args
+ 1);
3303 memcpy (switches
[n_switches
].args
, args
, n_args
* sizeof (const char *));
3304 switches
[n_switches
].args
[n_args
] = NULL
;
3307 switches
[n_switches
].live_cond
= 0;
3308 switches
[n_switches
].validated
= validated
;
3309 switches
[n_switches
].known
= known
;
3310 switches
[n_switches
].ordering
= 0;
3314 /* Handle an option DECODED that is unknown to the option-processing
3318 driver_unknown_option_callback (const struct cl_decoded_option
*decoded
)
3320 const char *opt
= decoded
->arg
;
3321 if (opt
[1] == 'W' && opt
[2] == 'n' && opt
[3] == 'o' && opt
[4] == '-'
3322 && !(decoded
->errors
& CL_ERR_NEGATIVE
))
3324 /* Leave unknown -Wno-* options for the compiler proper, to be
3325 diagnosed only if there are warnings. */
3326 save_switch (decoded
->canonical_option
[0],
3327 decoded
->canonical_option_num_elements
- 1,
3328 &decoded
->canonical_option
[1], false, true);
3331 if (decoded
->opt_index
== OPT_SPECIAL_unknown
)
3333 /* Give it a chance to define it a a spec file. */
3334 save_switch (decoded
->canonical_option
[0],
3335 decoded
->canonical_option_num_elements
- 1,
3336 &decoded
->canonical_option
[1], false, false);
3343 /* Handle an option DECODED that is not marked as CL_DRIVER.
3344 LANG_MASK will always be CL_DRIVER. */
3347 driver_wrong_lang_callback (const struct cl_decoded_option
*decoded
,
3348 unsigned int lang_mask ATTRIBUTE_UNUSED
)
3350 /* At this point, non-driver options are accepted (and expected to
3351 be passed down by specs) unless marked to be rejected by the
3352 driver. Options to be rejected by the driver but accepted by the
3353 compilers proper are treated just like completely unknown
3355 const struct cl_option
*option
= &cl_options
[decoded
->opt_index
];
3357 if (option
->cl_reject_driver
)
3358 error ("unrecognized command line option %qs",
3359 decoded
->orig_option_with_args_text
);
3361 save_switch (decoded
->canonical_option
[0],
3362 decoded
->canonical_option_num_elements
- 1,
3363 &decoded
->canonical_option
[1], false, true);
3366 static const char *spec_lang
= 0;
3367 static int last_language_n_infiles
;
3369 /* Handle a driver option; arguments and return value as for
3373 driver_handle_option (struct gcc_options
*opts
,
3374 struct gcc_options
*opts_set
,
3375 const struct cl_decoded_option
*decoded
,
3376 unsigned int lang_mask ATTRIBUTE_UNUSED
, int kind
,
3378 const struct cl_option_handlers
*handlers ATTRIBUTE_UNUSED
,
3379 diagnostic_context
*dc
)
3381 size_t opt_index
= decoded
->opt_index
;
3382 const char *arg
= decoded
->arg
;
3383 const char *compare_debug_replacement_opt
;
3384 int value
= decoded
->value
;
3385 bool validated
= false;
3386 bool do_save
= true;
3388 gcc_assert (opts
== &global_options
);
3389 gcc_assert (opts_set
== &global_options_set
);
3390 gcc_assert (kind
== DK_UNSPECIFIED
);
3391 gcc_assert (loc
== UNKNOWN_LOCATION
);
3392 gcc_assert (dc
== global_dc
);
3398 struct spec_list
*sl
;
3400 for (sl
= specs
; sl
; sl
= sl
->next
)
3401 printf ("*%s:\n%s\n\n", sl
->name
, *(sl
->ptr_spec
));
3402 if (link_command_spec
)
3403 printf ("*link_command:\n%s\n\n", link_command_spec
);
3407 case OPT_dumpversion
:
3408 printf ("%s\n", spec_version
);
3411 case OPT_dumpmachine
:
3412 printf ("%s\n", spec_machine
);
3418 /* CPP driver cannot obtain switch from cc1_options. */
3420 add_preprocessor_option ("--version", strlen ("--version"));
3421 add_assembler_option ("--version", strlen ("--version"));
3422 add_linker_option ("--version", strlen ("--version"));
3426 print_help_list
= 1;
3428 /* CPP driver cannot obtain switch from cc1_options. */
3430 add_preprocessor_option ("--help", 6);
3431 add_assembler_option ("--help", 6);
3432 add_linker_option ("--help", 6);
3436 print_subprocess_help
= 2;
3439 case OPT__target_help
:
3440 print_subprocess_help
= 1;
3442 /* CPP driver cannot obtain switch from cc1_options. */
3444 add_preprocessor_option ("--target-help", 13);
3445 add_assembler_option ("--target-help", 13);
3446 add_linker_option ("--target-help", 13);
3449 case OPT__no_sysroot_suffix
:
3450 case OPT_pass_exit_codes
:
3451 case OPT_print_search_dirs
:
3452 case OPT_print_file_name_
:
3453 case OPT_print_prog_name_
:
3454 case OPT_print_multi_lib
:
3455 case OPT_print_multi_directory
:
3456 case OPT_print_sysroot
:
3457 case OPT_print_multi_os_directory
:
3458 case OPT_print_multiarch
:
3459 case OPT_print_sysroot_headers_suffix
:
3462 /* These options set the variables specified in common.opt
3463 automatically, and do not need to be saved for spec
3468 case OPT_print_libgcc_file_name
:
3469 print_file_name
= "libgcc.a";
3473 case OPT_fuse_ld_bfd
:
3477 case OPT_fuse_ld_gold
:
3481 case OPT_fcompare_debug_second
:
3482 compare_debug_second
= 1;
3485 case OPT_fcompare_debug
:
3489 compare_debug_replacement_opt
= "-fcompare-debug=";
3491 goto compare_debug_with_arg
;
3494 compare_debug_replacement_opt
= "-fcompare-debug=-gtoggle";
3496 goto compare_debug_with_arg
;
3503 case OPT_fcompare_debug_
:
3504 compare_debug_replacement_opt
= decoded
->canonical_option
[0];
3505 compare_debug_with_arg
:
3506 gcc_assert (decoded
->canonical_option_num_elements
== 1);
3507 gcc_assert (arg
!= NULL
);
3512 if (compare_debug
< 0)
3513 compare_debug_opt
= NULL
;
3515 compare_debug_opt
= arg
;
3516 save_switch (compare_debug_replacement_opt
, 0, NULL
, validated
, true);
3522 /* Pass the rest of this option to the assembler. */
3524 /* Split the argument at commas. */
3526 for (j
= 0; arg
[j
]; j
++)
3529 add_assembler_option (arg
+ prev
, j
- prev
);
3533 /* Record the part after the last comma. */
3534 add_assembler_option (arg
+ prev
, j
- prev
);
3542 /* Pass the rest of this option to the preprocessor. */
3544 /* Split the argument at commas. */
3546 for (j
= 0; arg
[j
]; j
++)
3549 add_preprocessor_option (arg
+ prev
, j
- prev
);
3553 /* Record the part after the last comma. */
3554 add_preprocessor_option (arg
+ prev
, j
- prev
);
3562 /* Split the argument at commas. */
3564 for (j
= 0; arg
[j
]; j
++)
3567 add_infile (save_string (arg
+ prev
, j
- prev
), "*");
3570 /* Record the part after the last comma. */
3571 add_infile (arg
+ prev
, "*");
3577 add_infile (arg
, "*");
3581 case OPT_Xpreprocessor
:
3582 add_preprocessor_option (arg
, strlen (arg
));
3586 case OPT_Xassembler
:
3587 add_assembler_option (arg
, strlen (arg
));
3592 /* POSIX allows separation of -l and the lib arg; canonicalize
3593 by concatenating -l with its arg */
3594 add_infile (concat ("-l", arg
, NULL
), "*");
3599 /* Similarly, canonicalize -L for linkers that may not accept
3600 separate arguments. */
3601 save_switch (concat ("-L", arg
, NULL
), 0, NULL
, validated
, true);
3606 save_switch (concat ("-F", arg
, NULL
), 0, NULL
, validated
, true);
3609 case OPT_save_temps
:
3610 save_temps_flag
= SAVE_TEMPS_CWD
;
3614 case OPT_save_temps_
:
3615 if (strcmp (arg
, "cwd") == 0)
3616 save_temps_flag
= SAVE_TEMPS_CWD
;
3617 else if (strcmp (arg
, "obj") == 0
3618 || strcmp (arg
, "object") == 0)
3619 save_temps_flag
= SAVE_TEMPS_OBJ
;
3621 fatal_error ("%qs is an unknown -save-temps option",
3622 decoded
->orig_option_with_args_text
);
3625 case OPT_no_canonical_prefixes
:
3626 /* Already handled as a special case, so ignored here. */
3632 /* These options set the variables specified in common.opt
3633 automatically, but do need to be saved for spec
3639 struct user_specs
*user
= XNEW (struct user_specs
);
3641 user
->next
= (struct user_specs
*) 0;
3642 user
->filename
= arg
;
3643 if (user_specs_tail
)
3644 user_specs_tail
->next
= user
;
3646 user_specs_head
= user
;
3647 user_specs_tail
= user
;
3653 target_system_root
= arg
;
3654 target_system_root_changed
= 1;
3659 if (report_times_to_file
)
3660 fclose (report_times_to_file
);
3661 report_times_to_file
= fopen (arg
, "a");
3667 This is similar to -v except that there is no execution
3668 of the commands and the echoed arguments are quoted. It
3669 is intended for use in shell scripts to capture the
3670 driver-generated command line. */
3671 verbose_only_flag
++;
3678 size_t len
= strlen (arg
);
3680 /* Catch the case where the user has forgotten to append a
3681 directory separator to the path. Note, they may be using
3682 -B to add an executable name prefix, eg "i386-elf-", in
3683 order to distinguish between multiple installations of
3684 GCC in the same directory. Hence we must check to see
3685 if appending a directory separator actually makes a
3686 valid directory name. */
3687 if (!IS_DIR_SEPARATOR (arg
[len
- 1])
3688 && is_directory (arg
, false))
3690 char *tmp
= XNEWVEC (char, len
+ 2);
3692 tmp
[len
] = DIR_SEPARATOR
;
3697 add_prefix (&exec_prefixes
, arg
, NULL
,
3698 PREFIX_PRIORITY_B_OPT
, 0, 0);
3699 add_prefix (&startfile_prefixes
, arg
, NULL
,
3700 PREFIX_PRIORITY_B_OPT
, 0, 0);
3701 add_prefix (&include_prefixes
, arg
, NULL
,
3702 PREFIX_PRIORITY_B_OPT
, 0, 0);
3709 if (!strcmp (spec_lang
, "none"))
3710 /* Suppress the warning if -xnone comes after the last input
3711 file, because alternate command interfaces like g++ might
3712 find it useful to place -xnone after each input file. */
3715 last_language_n_infiles
= n_infiles
;
3721 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3722 arg
= convert_filename (arg
, ! have_c
, 0);
3724 /* Save the output name in case -save-temps=obj was used. */
3725 save_temps_prefix
= xstrdup (arg
);
3726 /* On some systems, ld cannot handle "-o" without a space. So
3727 split the option from its argument. */
3728 save_switch ("-o", 1, &arg
, validated
, true);
3731 case OPT_static_libgcc
:
3732 case OPT_shared_libgcc
:
3733 case OPT_static_libgfortran
:
3734 case OPT_static_libstdc__
:
3735 /* These are always valid, since gcc.c itself understands the
3736 first two, gfortranspec.c understands -static-libgfortran and
3737 g++spec.c understands -static-libstdc++ */
3746 /* Various driver options need no special processing at this
3747 point, having been handled in a prescan above or being
3748 handled by specs. */
3753 save_switch (decoded
->canonical_option
[0],
3754 decoded
->canonical_option_num_elements
- 1,
3755 &decoded
->canonical_option
[1], validated
, true);
3759 /* Put the driver's standard set of option handlers in *HANDLERS. */
3762 set_option_handlers (struct cl_option_handlers
*handlers
)
3764 handlers
->unknown_option_callback
= driver_unknown_option_callback
;
3765 handlers
->wrong_lang_callback
= driver_wrong_lang_callback
;
3766 handlers
->num_handlers
= 3;
3767 handlers
->handlers
[0].handler
= driver_handle_option
;
3768 handlers
->handlers
[0].mask
= CL_DRIVER
;
3769 handlers
->handlers
[1].handler
= common_handle_option
;
3770 handlers
->handlers
[1].mask
= CL_COMMON
;
3771 handlers
->handlers
[2].handler
= target_handle_option
;
3772 handlers
->handlers
[2].mask
= CL_TARGET
;
3775 /* Create the vector `switches' and its contents.
3776 Store its length in `n_switches'. */
3779 process_command (unsigned int decoded_options_count
,
3780 struct cl_decoded_option
*decoded_options
)
3784 char *tooldir_prefix
, *tooldir_prefix2
;
3785 char *(*get_relative_prefix
) (const char *, const char *,
3786 const char *) = NULL
;
3787 struct cl_option_handlers handlers
;
3790 gcc_exec_prefix
= getenv ("GCC_EXEC_PREFIX");
3794 added_libraries
= 0;
3796 /* Figure compiler version from version string. */
3798 compiler_version
= temp1
= xstrdup (version_string
);
3800 for (; *temp1
; ++temp1
)
3809 /* Handle any -no-canonical-prefixes flag early, to assign the function
3810 that builds relative prefixes. This function creates default search
3811 paths that are needed later in normal option handling. */
3813 for (j
= 1; j
< decoded_options_count
; j
++)
3815 if (decoded_options
[j
].opt_index
== OPT_no_canonical_prefixes
)
3817 get_relative_prefix
= make_relative_prefix_ignore_links
;
3821 if (! get_relative_prefix
)
3822 get_relative_prefix
= make_relative_prefix
;
3824 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3825 see if we can create it from the pathname specified in
3826 decoded_options[0].arg. */
3828 gcc_libexec_prefix
= standard_libexec_prefix
;
3830 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3831 if (!gcc_exec_prefix
)
3833 gcc_exec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3834 standard_bindir_prefix
,
3835 standard_exec_prefix
);
3836 gcc_libexec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3837 standard_bindir_prefix
,
3838 standard_libexec_prefix
);
3839 if (gcc_exec_prefix
)
3840 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix
, NULL
));
3844 /* make_relative_prefix requires a program name, but
3845 GCC_EXEC_PREFIX is typically a directory name with a trailing
3846 / (which is ignored by make_relative_prefix), so append a
3848 char *tmp_prefix
= concat (gcc_exec_prefix
, "gcc", NULL
);
3849 gcc_libexec_prefix
= get_relative_prefix (tmp_prefix
,
3850 standard_exec_prefix
,
3851 standard_libexec_prefix
);
3853 /* The path is unrelocated, so fallback to the original setting. */
3854 if (!gcc_libexec_prefix
)
3855 gcc_libexec_prefix
= standard_libexec_prefix
;
3861 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3862 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3863 or an automatically created GCC_EXEC_PREFIX from
3864 decoded_options[0].arg. */
3866 /* Do language-specific adjustment/addition of flags. */
3867 lang_specific_driver (&decoded_options
, &decoded_options_count
,
3870 if (gcc_exec_prefix
)
3872 int len
= strlen (gcc_exec_prefix
);
3874 if (len
> (int) sizeof ("/lib/gcc/") - 1
3875 && (IS_DIR_SEPARATOR (gcc_exec_prefix
[len
-1])))
3877 temp
= gcc_exec_prefix
+ len
- sizeof ("/lib/gcc/") + 1;
3878 if (IS_DIR_SEPARATOR (*temp
)
3879 && filename_ncmp (temp
+ 1, "lib", 3) == 0
3880 && IS_DIR_SEPARATOR (temp
[4])
3881 && filename_ncmp (temp
+ 5, "gcc", 3) == 0)
3882 len
-= sizeof ("/lib/gcc/") - 1;
3885 set_std_prefix (gcc_exec_prefix
, len
);
3886 add_prefix (&exec_prefixes
, gcc_libexec_prefix
, "GCC",
3887 PREFIX_PRIORITY_LAST
, 0, 0);
3888 add_prefix (&startfile_prefixes
, gcc_exec_prefix
, "GCC",
3889 PREFIX_PRIORITY_LAST
, 0, 0);
3892 /* COMPILER_PATH and LIBRARY_PATH have values
3893 that are lists of directory names with colons. */
3895 temp
= getenv ("COMPILER_PATH");
3898 const char *startp
, *endp
;
3899 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3901 startp
= endp
= temp
;
3904 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3906 strncpy (nstore
, startp
, endp
- startp
);
3908 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3909 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3911 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3912 nstore
[endp
- startp
+ 1] = 0;
3915 nstore
[endp
- startp
] = 0;
3916 add_prefix (&exec_prefixes
, nstore
, 0,
3917 PREFIX_PRIORITY_LAST
, 0, 0);
3918 add_prefix (&include_prefixes
, nstore
, 0,
3919 PREFIX_PRIORITY_LAST
, 0, 0);
3922 endp
= startp
= endp
+ 1;
3929 temp
= getenv (LIBRARY_PATH_ENV
);
3930 if (temp
&& *cross_compile
== '0')
3932 const char *startp
, *endp
;
3933 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3935 startp
= endp
= temp
;
3938 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3940 strncpy (nstore
, startp
, endp
- startp
);
3942 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3943 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3945 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3946 nstore
[endp
- startp
+ 1] = 0;
3949 nstore
[endp
- startp
] = 0;
3950 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3951 PREFIX_PRIORITY_LAST
, 0, 1);
3954 endp
= startp
= endp
+ 1;
3961 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3962 temp
= getenv ("LPATH");
3963 if (temp
&& *cross_compile
== '0')
3965 const char *startp
, *endp
;
3966 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3968 startp
= endp
= temp
;
3971 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3973 strncpy (nstore
, startp
, endp
- startp
);
3975 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3976 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3978 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3979 nstore
[endp
- startp
+ 1] = 0;
3982 nstore
[endp
- startp
] = 0;
3983 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3984 PREFIX_PRIORITY_LAST
, 0, 1);
3987 endp
= startp
= endp
+ 1;
3994 /* Process the options and store input files and switches in their
3997 last_language_n_infiles
= -1;
3999 set_option_handlers (&handlers
);
4001 for (j
= 1; j
< decoded_options_count
; j
++)
4003 switch (decoded_options
[j
].opt_index
)
4015 for (j
= 1; j
< decoded_options_count
; j
++)
4017 if (decoded_options
[j
].opt_index
== OPT_SPECIAL_input_file
)
4019 const char *arg
= decoded_options
[j
].arg
;
4020 const char *p
= strrchr (arg
, '@');
4024 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4025 arg
= convert_filename (arg
, 0, access (arg
, F_OK
));
4027 /* For LTO static archive support we handle input file
4028 specifications that are composed of a filename and
4029 an offset like FNAME@OFFSET. */
4032 && sscanf (p
, "@%li%n", &offset
, &consumed
) >= 1
4033 && strlen (p
) == (unsigned int)consumed
)
4035 fname
= (char *)xmalloc (p
- arg
+ 1);
4036 memcpy (fname
, arg
, p
- arg
);
4037 fname
[p
- arg
] = '\0';
4038 /* Only accept non-stdin and existing FNAME parts, otherwise
4039 try with the full name. */
4040 if (strcmp (fname
, "-") == 0 || access (fname
, F_OK
) < 0)
4043 fname
= xstrdup (arg
);
4047 fname
= xstrdup (arg
);
4049 if (strcmp (fname
, "-") != 0 && access (fname
, F_OK
) < 0)
4050 perror_with_name (fname
);
4052 add_infile (arg
, spec_lang
);
4058 read_cmdline_option (&global_options
, &global_options_set
,
4059 decoded_options
+ j
, UNKNOWN_LOCATION
,
4060 CL_DRIVER
, &handlers
, global_dc
);
4063 /* If -save-temps=obj and -o name, create the prefix to use for %b.
4064 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
4065 if (save_temps_flag
== SAVE_TEMPS_OBJ
&& save_temps_prefix
!= NULL
)
4067 save_temps_length
= strlen (save_temps_prefix
);
4068 temp
= strrchr (lbasename (save_temps_prefix
), '.');
4071 save_temps_length
-= strlen (temp
);
4072 save_temps_prefix
[save_temps_length
] = '\0';
4076 else if (save_temps_prefix
!= NULL
)
4078 free (save_temps_prefix
);
4079 save_temps_prefix
= NULL
;
4082 if (save_temps_flag
&& use_pipes
)
4084 /* -save-temps overrides -pipe, so that temp files are produced */
4085 if (save_temps_flag
)
4086 warning (0, "-pipe ignored because -save-temps specified");
4092 const char *gcd
= getenv ("GCC_COMPARE_DEBUG");
4094 if (gcd
&& gcd
[0] == '-')
4097 compare_debug_opt
= gcd
;
4099 else if (gcd
&& *gcd
&& strcmp (gcd
, "0"))
4102 compare_debug_opt
= "-gtoggle";
4105 else if (compare_debug
< 0)
4108 gcc_assert (!compare_debug_opt
);
4111 /* Set up the search paths. We add directories that we expect to
4112 contain GNU Toolchain components before directories specified by
4113 the machine description so that we will find GNU components (like
4114 the GNU assembler) before those of the host system. */
4116 /* If we don't know where the toolchain has been installed, use the
4117 configured-in locations. */
4118 if (!gcc_exec_prefix
)
4121 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "GCC",
4122 PREFIX_PRIORITY_LAST
, 1, 0);
4123 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "BINUTILS",
4124 PREFIX_PRIORITY_LAST
, 2, 0);
4125 add_prefix (&exec_prefixes
, standard_exec_prefix
, "BINUTILS",
4126 PREFIX_PRIORITY_LAST
, 2, 0);
4128 add_prefix (&startfile_prefixes
, standard_exec_prefix
, "BINUTILS",
4129 PREFIX_PRIORITY_LAST
, 1, 0);
4132 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix
));
4133 tooldir_prefix2
= concat (tooldir_base_prefix
, spec_machine
,
4134 dir_separator_str
, NULL
);
4136 /* Look for tools relative to the location from which the driver is
4137 running, or, if that is not available, the configured prefix. */
4139 = concat (gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
4140 spec_machine
, dir_separator_str
,
4141 spec_version
, dir_separator_str
, tooldir_prefix2
, NULL
);
4142 free (tooldir_prefix2
);
4144 add_prefix (&exec_prefixes
,
4145 concat (tooldir_prefix
, "bin", dir_separator_str
, NULL
),
4146 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 0);
4147 add_prefix (&startfile_prefixes
,
4148 concat (tooldir_prefix
, "lib", dir_separator_str
, NULL
),
4149 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 1);
4150 free (tooldir_prefix
);
4152 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
4153 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
4154 then consider it to relocate with the rest of the GCC installation
4155 if GCC_EXEC_PREFIX is set.
4156 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
4157 if (target_system_root
&& !target_system_root_changed
&& gcc_exec_prefix
)
4159 char *tmp_prefix
= get_relative_prefix (decoded_options
[0].arg
,
4160 standard_bindir_prefix
,
4161 target_system_root
);
4162 if (tmp_prefix
&& access_check (tmp_prefix
, F_OK
) == 0)
4164 target_system_root
= tmp_prefix
;
4165 target_system_root_changed
= 1;
4170 /* More prefixes are enabled in main, after we read the specs file
4171 and determine whether this is cross-compilation or not. */
4173 if (n_infiles
== last_language_n_infiles
&& spec_lang
!= 0)
4174 warning (0, "%<-x %s%> after last input file has no effect", spec_lang
);
4176 /* Synthesize -fcompare-debug flag from the GCC_COMPARE_DEBUG
4177 environment variable. */
4178 if (compare_debug
== 2 || compare_debug
== 3)
4180 const char *opt
= concat ("-fcompare-debug=", compare_debug_opt
, NULL
);
4181 save_switch (opt
, 0, NULL
, false, true);
4185 /* Ensure we only invoke each subprocess once. */
4186 if (print_subprocess_help
|| print_help_list
|| print_version
)
4190 /* Create a dummy input file, so that we can pass
4191 the help option on to the various sub-processes. */
4192 add_infile ("help-dummy", "c");
4196 switches
[n_switches
].part1
= 0;
4198 infiles
[n_infiles
].name
= 0;
4201 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4202 and place that in the environment. */
4205 set_collect_gcc_options (void)
4210 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4212 obstack_grow (&collect_obstack
, "COLLECT_GCC_OPTIONS=",
4213 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4216 for (i
= 0; (int) i
< n_switches
; i
++)
4218 const char *const *args
;
4221 obstack_grow (&collect_obstack
, " ", 1);
4225 /* Ignore elided switches. */
4226 if ((switches
[i
].live_cond
4227 & (SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
))
4231 obstack_grow (&collect_obstack
, "'-", 2);
4232 q
= switches
[i
].part1
;
4233 while ((p
= strchr (q
, '\'')))
4235 obstack_grow (&collect_obstack
, q
, p
- q
);
4236 obstack_grow (&collect_obstack
, "'\\''", 4);
4239 obstack_grow (&collect_obstack
, q
, strlen (q
));
4240 obstack_grow (&collect_obstack
, "'", 1);
4242 for (args
= switches
[i
].args
; args
&& *args
; args
++)
4244 obstack_grow (&collect_obstack
, " '", 2);
4246 while ((p
= strchr (q
, '\'')))
4248 obstack_grow (&collect_obstack
, q
, p
- q
);
4249 obstack_grow (&collect_obstack
, "'\\''", 4);
4252 obstack_grow (&collect_obstack
, q
, strlen (q
));
4253 obstack_grow (&collect_obstack
, "'", 1);
4256 obstack_grow (&collect_obstack
, "\0", 1);
4257 xputenv (XOBFINISH (&collect_obstack
, char *));
4260 /* Process a spec string, accumulating and running commands. */
4262 /* These variables describe the input file name.
4263 input_file_number is the index on outfiles of this file,
4264 so that the output file name can be stored for later use by %o.
4265 input_basename is the start of the part of the input file
4266 sans all directory names, and basename_length is the number
4267 of characters starting there excluding the suffix .c or whatever. */
4269 static const char *gcc_input_filename
;
4270 static int input_file_number
;
4271 size_t input_filename_length
;
4272 static int basename_length
;
4273 static int suffixed_basename_length
;
4274 static const char *input_basename
;
4275 static const char *input_suffix
;
4276 #ifndef HOST_LACKS_INODE_NUMBERS
4277 static struct stat input_stat
;
4279 static int input_stat_set
;
4281 /* The compiler used to process the current input file. */
4282 static struct compiler
*input_file_compiler
;
4284 /* These are variables used within do_spec and do_spec_1. */
4286 /* Nonzero if an arg has been started and not yet terminated
4287 (with space, tab or newline). */
4288 static int arg_going
;
4290 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4291 is a temporary file name. */
4292 static int delete_this_arg
;
4294 /* Nonzero means %w has been seen; the next arg to be terminated
4295 is the output file name of this compilation. */
4296 static int this_is_output_file
;
4298 /* Nonzero means %s has been seen; the next arg to be terminated
4299 is the name of a library file and we should try the standard
4300 search dirs for it. */
4301 static int this_is_library_file
;
4303 /* Nonzero means %T has been seen; the next arg to be terminated
4304 is the name of a linker script and we should try all of the
4305 standard search dirs for it. If it is found insert a --script
4306 command line switch and then substitute the full path in place,
4307 otherwise generate an error message. */
4308 static int this_is_linker_script
;
4310 /* Nonzero means that the input of this command is coming from a pipe. */
4311 static int input_from_pipe
;
4313 /* Nonnull means substitute this for any suffix when outputting a switches
4315 static const char *suffix_subst
;
4317 /* If there is an argument being accumulated, terminate it and store it. */
4320 end_going_arg (void)
4326 obstack_1grow (&obstack
, 0);
4327 string
= XOBFINISH (&obstack
, const char *);
4328 if (this_is_library_file
)
4329 string
= find_file (string
);
4330 if (this_is_linker_script
)
4332 char * full_script_path
= find_a_file (&startfile_prefixes
, string
, R_OK
, true);
4334 if (full_script_path
== NULL
)
4336 error ("unable to locate default linker script %qs in the library search paths", string
);
4337 /* Script was not found on search path. */
4340 store_arg ("--script", false, false);
4341 string
= full_script_path
;
4343 store_arg (string
, delete_this_arg
, this_is_output_file
);
4344 if (this_is_output_file
)
4345 outfiles
[input_file_number
] = string
;
4351 /* Parse the WRAPPER string which is a comma separated list of the command line
4352 and insert them into the beginning of argbuf. */
4355 insert_wrapper (const char *wrapper
)
4359 char *buf
= xstrdup (wrapper
);
4361 unsigned int old_length
= argbuf
.length ();
4369 while ((p
= strchr (p
, ',')) != NULL
);
4371 argbuf
.safe_grow (old_length
+ n
);
4372 memmove (argbuf
.address () + n
,
4374 old_length
* sizeof (const_char_p
));
4388 while ((p
= strchr (p
, ',')) != NULL
);
4389 gcc_assert (i
== n
);
4392 /* Process the spec SPEC and run the commands specified therein.
4393 Returns 0 if the spec is successfully processed; -1 if failed. */
4396 do_spec (const char *spec
)
4400 value
= do_spec_2 (spec
);
4402 /* Force out any unfinished command.
4403 If -pipe, this forces out the last command if it ended in `|'. */
4406 if (argbuf
.length () > 0
4407 && !strcmp (argbuf
.last (), "|"))
4410 set_collect_gcc_options ();
4412 if (argbuf
.length () > 0)
4420 do_spec_2 (const char *spec
)
4426 delete_this_arg
= 0;
4427 this_is_output_file
= 0;
4428 this_is_library_file
= 0;
4429 this_is_linker_script
= 0;
4430 input_from_pipe
= 0;
4431 suffix_subst
= NULL
;
4433 result
= do_spec_1 (spec
, 0, NULL
);
4441 /* Process the given spec string and add any new options to the end
4442 of the switches/n_switches array. */
4445 do_option_spec (const char *name
, const char *spec
)
4447 unsigned int i
, value_count
, value_len
;
4448 const char *p
, *q
, *value
;
4449 char *tmp_spec
, *tmp_spec_p
;
4451 if (configure_default_options
[0].name
== NULL
)
4454 for (i
= 0; i
< ARRAY_SIZE (configure_default_options
); i
++)
4455 if (strcmp (configure_default_options
[i
].name
, name
) == 0)
4457 if (i
== ARRAY_SIZE (configure_default_options
))
4460 value
= configure_default_options
[i
].value
;
4461 value_len
= strlen (value
);
4463 /* Compute the size of the final spec. */
4466 while ((p
= strstr (p
, "%(VALUE)")) != NULL
)
4472 /* Replace each %(VALUE) by the specified value. */
4473 tmp_spec
= (char *) alloca (strlen (spec
) + 1
4474 + value_count
* (value_len
- strlen ("%(VALUE)")));
4475 tmp_spec_p
= tmp_spec
;
4477 while ((p
= strstr (q
, "%(VALUE)")) != NULL
)
4479 memcpy (tmp_spec_p
, q
, p
- q
);
4480 tmp_spec_p
= tmp_spec_p
+ (p
- q
);
4481 memcpy (tmp_spec_p
, value
, value_len
);
4482 tmp_spec_p
+= value_len
;
4483 q
= p
+ strlen ("%(VALUE)");
4485 strcpy (tmp_spec_p
, q
);
4487 do_self_spec (tmp_spec
);
4490 /* Process the given spec string and add any new options to the end
4491 of the switches/n_switches array. */
4494 do_self_spec (const char *spec
)
4499 do_spec_1 (" ", 0, NULL
);
4501 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4502 do_self_specs adds the replacements to switches array, so it shouldn't
4503 be processed afterwards. */
4504 for (i
= 0; i
< n_switches
; i
++)
4505 if ((switches
[i
].live_cond
& SWITCH_IGNORE
))
4506 switches
[i
].live_cond
|= SWITCH_IGNORE_PERMANENTLY
;
4508 if (argbuf
.length () > 0)
4510 const char **argbuf_copy
;
4511 struct cl_decoded_option
*decoded_options
;
4512 struct cl_option_handlers handlers
;
4513 unsigned int decoded_options_count
;
4516 /* Create a copy of argbuf with a dummy argv[0] entry for
4517 decode_cmdline_options_to_array. */
4518 argbuf_copy
= XNEWVEC (const char *,
4519 argbuf
.length () + 1);
4520 argbuf_copy
[0] = "";
4521 memcpy (argbuf_copy
+ 1, argbuf
.address (),
4522 argbuf
.length () * sizeof (const char *));
4524 decode_cmdline_options_to_array (argbuf
.length () + 1,
4526 CL_DRIVER
, &decoded_options
,
4527 &decoded_options_count
);
4530 set_option_handlers (&handlers
);
4532 for (j
= 1; j
< decoded_options_count
; j
++)
4534 switch (decoded_options
[j
].opt_index
)
4536 case OPT_SPECIAL_input_file
:
4537 /* Specs should only generate options, not input
4539 if (strcmp (decoded_options
[j
].arg
, "-") != 0)
4540 fatal_error ("switch %qs does not start with %<-%>",
4541 decoded_options
[j
].arg
);
4543 fatal_error ("spec-generated switch is just %<-%>");
4546 case OPT_fcompare_debug_second
:
4547 case OPT_fcompare_debug
:
4548 case OPT_fcompare_debug_
:
4550 /* Avoid duplicate processing of some options from
4551 compare-debug specs; just save them here. */
4552 save_switch (decoded_options
[j
].canonical_option
[0],
4553 (decoded_options
[j
].canonical_option_num_elements
4555 &decoded_options
[j
].canonical_option
[1], false, true);
4559 read_cmdline_option (&global_options
, &global_options_set
,
4560 decoded_options
+ j
, UNKNOWN_LOCATION
,
4561 CL_DRIVER
, &handlers
, global_dc
);
4567 switches
[n_switches
].part1
= 0;
4571 /* Callback for processing %D and %I specs. */
4573 struct spec_path_info
{
4578 bool separate_options
;
4582 spec_path (char *path
, void *data
)
4584 struct spec_path_info
*info
= (struct spec_path_info
*) data
;
4588 if (info
->omit_relative
&& !IS_ABSOLUTE_PATH (path
))
4591 if (info
->append_len
!= 0)
4593 len
= strlen (path
);
4594 memcpy (path
+ len
, info
->append
, info
->append_len
+ 1);
4597 if (!is_directory (path
, true))
4600 do_spec_1 (info
->option
, 1, NULL
);
4601 if (info
->separate_options
)
4602 do_spec_1 (" ", 0, NULL
);
4604 if (info
->append_len
== 0)
4606 len
= strlen (path
);
4607 save
= path
[len
- 1];
4608 if (IS_DIR_SEPARATOR (path
[len
- 1]))
4609 path
[len
- 1] = '\0';
4612 do_spec_1 (path
, 1, NULL
);
4613 do_spec_1 (" ", 0, NULL
);
4615 /* Must not damage the original path. */
4616 if (info
->append_len
== 0)
4617 path
[len
- 1] = save
;
4622 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4626 create_at_file (char **argv
)
4628 char *temp_file
= make_temp_file ("");
4629 char *at_argument
= concat ("@", temp_file
, NULL
);
4630 FILE *f
= fopen (temp_file
, "w");
4634 fatal_error ("could not open temporary response file %s",
4637 status
= writeargv (argv
, f
);
4640 fatal_error ("could not write to temporary response file %s",
4643 status
= fclose (f
);
4646 fatal_error ("could not close temporary response file %s",
4649 store_arg (at_argument
, 0, 0);
4651 record_temp_file (temp_file
, !save_temps_flag
, !save_temps_flag
);
4654 /* True if we should compile INFILE. */
4657 compile_input_file_p (struct infile
*infile
)
4659 if ((!infile
->language
) || (infile
->language
[0] != '*'))
4660 if (infile
->incompiler
== input_file_compiler
)
4665 /* Process each member of VEC as a spec. */
4668 do_specs_vec (vec
<char_p
> vec
)
4673 FOR_EACH_VEC_ELT (vec
, ix
, opt
)
4675 do_spec_1 (opt
, 1, NULL
);
4676 /* Make each accumulated option a separate argument. */
4677 do_spec_1 (" ", 0, NULL
);
4681 /* Process the sub-spec SPEC as a portion of a larger spec.
4682 This is like processing a whole spec except that we do
4683 not initialize at the beginning and we do not supply a
4684 newline by default at the end.
4685 INSWITCH nonzero means don't process %-sequences in SPEC;
4686 in this case, % is treated as an ordinary character.
4687 This is used while substituting switches.
4688 INSWITCH nonzero also causes SPC not to terminate an argument.
4690 Value is zero unless a line was finished
4691 and the command on that line reported an error. */
4694 do_spec_1 (const char *spec
, int inswitch
, const char *soft_matched_part
)
4696 const char *p
= spec
;
4701 /* If it's an empty string argument to a switch, keep it as is. */
4702 if (inswitch
&& !*p
)
4706 /* If substituting a switch, treat all chars like letters.
4707 Otherwise, NL, SPC, TAB and % are special. */
4708 switch (inswitch
? 'a' : c
)
4713 if (argbuf
.length () > 0
4714 && !strcmp (argbuf
.last (), "|"))
4716 /* A `|' before the newline means use a pipe here,
4717 but only if -pipe was specified.
4718 Otherwise, execute now and don't pass the `|' as an arg. */
4721 input_from_pipe
= 1;
4728 set_collect_gcc_options ();
4730 if (argbuf
.length () > 0)
4736 /* Reinitialize for a new command, and for a new argument. */
4739 delete_this_arg
= 0;
4740 this_is_output_file
= 0;
4741 this_is_library_file
= 0;
4742 this_is_linker_script
= 0;
4743 input_from_pipe
= 0;
4750 obstack_1grow (&obstack
, c
);
4758 /* Reinitialize for a new argument. */
4759 delete_this_arg
= 0;
4760 this_is_output_file
= 0;
4761 this_is_library_file
= 0;
4762 this_is_linker_script
= 0;
4769 fatal_error ("spec %qs invalid", spec
);
4772 if (save_temps_length
)
4773 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4775 obstack_grow (&obstack
, input_basename
, basename_length
);
4776 if (compare_debug
< 0)
4777 obstack_grow (&obstack
, ".gk", 3);
4782 if (save_temps_length
)
4783 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4785 obstack_grow (&obstack
, input_basename
, suffixed_basename_length
);
4786 if (compare_debug
< 0)
4787 obstack_grow (&obstack
, ".gk", 3);
4792 delete_this_arg
= 2;
4795 /* Dump out the directories specified with LIBRARY_PATH,
4796 followed by the absolute directories
4797 that we search for startfiles. */
4800 struct spec_path_info info
;
4803 info
.append_len
= 0;
4804 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4805 /* Used on systems which record the specified -L dirs
4806 and use them to search for dynamic linking.
4807 Relative directories always come from -B,
4808 and it is better not to use them for searching
4809 at run time. In particular, stage1 loses. */
4810 info
.omit_relative
= true;
4812 info
.omit_relative
= false;
4814 info
.separate_options
= false;
4816 for_each_path (&startfile_prefixes
, true, 0, spec_path
, &info
);
4821 /* %efoo means report an error with `foo' as error message
4822 and don't execute any more commands for this file. */
4826 while (*p
!= 0 && *p
!= '\n')
4828 buf
= (char *) alloca (p
- q
+ 1);
4829 strncpy (buf
, q
, p
- q
);
4831 error ("%s", _(buf
));
4836 /* %nfoo means report a notice with `foo' on stderr. */
4840 while (*p
!= 0 && *p
!= '\n')
4842 buf
= (char *) alloca (p
- q
+ 1);
4843 strncpy (buf
, q
, p
- q
);
4845 inform (0, "%s", _(buf
));
4855 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4856 defined, and it is not a directory, and it is
4857 writable, use it. Otherwise, treat this like any
4858 other temporary file. */
4860 if ((!save_temps_flag
)
4861 && (stat (HOST_BIT_BUCKET
, &st
) == 0) && (!S_ISDIR (st
.st_mode
))
4862 && (access (HOST_BIT_BUCKET
, W_OK
) == 0))
4864 obstack_grow (&obstack
, HOST_BIT_BUCKET
,
4865 strlen (HOST_BIT_BUCKET
));
4866 delete_this_arg
= 0;
4871 goto create_temp_file
;
4875 obstack_1grow (&obstack
, '-');
4876 delete_this_arg
= 0;
4879 /* consume suffix */
4880 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4882 if (p
[0] == '%' && p
[1] == 'O')
4887 goto create_temp_file
;
4891 /* consume suffix */
4892 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4894 if (p
[0] == '%' && p
[1] == 'O')
4899 goto create_temp_file
;
4905 struct temp_name
*t
;
4907 const char *suffix
= p
;
4908 char *saved_suffix
= NULL
;
4910 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4912 suffix_length
= p
- suffix
;
4913 if (p
[0] == '%' && p
[1] == 'O')
4916 /* We don't support extra suffix characters after %O. */
4917 if (*p
== '.' || ISALNUM ((unsigned char) *p
))
4918 fatal_error ("spec %qs has invalid %<%%0%c%>", spec
, *p
);
4919 if (suffix_length
== 0)
4920 suffix
= TARGET_OBJECT_SUFFIX
;
4924 = XNEWVEC (char, suffix_length
4925 + strlen (TARGET_OBJECT_SUFFIX
) + 1);
4926 strncpy (saved_suffix
, suffix
, suffix_length
);
4927 strcpy (saved_suffix
+ suffix_length
,
4928 TARGET_OBJECT_SUFFIX
);
4930 suffix_length
+= strlen (TARGET_OBJECT_SUFFIX
);
4933 if (compare_debug
< 0)
4935 suffix
= concat (".gk", suffix
, NULL
);
4939 /* If -save-temps=obj and -o were specified, use that for the
4941 if (save_temps_length
)
4944 temp_filename_length
4945 = save_temps_length
+ suffix_length
+ 1;
4946 tmp
= (char *) alloca (temp_filename_length
);
4947 memcpy (tmp
, save_temps_prefix
, save_temps_length
);
4948 memcpy (tmp
+ save_temps_length
, suffix
, suffix_length
);
4949 tmp
[save_temps_length
+ suffix_length
] = '\0';
4950 temp_filename
= save_string (tmp
, save_temps_length
4952 obstack_grow (&obstack
, temp_filename
,
4953 temp_filename_length
);
4955 delete_this_arg
= 0;
4959 /* If the gcc_input_filename has the same suffix specified
4960 for the %g, %u, or %U, and -save-temps is specified,
4961 we could end up using that file as an intermediate
4962 thus clobbering the user's source file (.e.g.,
4963 gcc -save-temps foo.s would clobber foo.s with the
4964 output of cpp0). So check for this condition and
4965 generate a temp file as the intermediate. */
4967 if (save_temps_flag
)
4970 temp_filename_length
= basename_length
+ suffix_length
+ 1;
4971 tmp
= (char *) alloca (temp_filename_length
);
4972 memcpy (tmp
, input_basename
, basename_length
);
4973 memcpy (tmp
+ basename_length
, suffix
, suffix_length
);
4974 tmp
[basename_length
+ suffix_length
] = '\0';
4975 temp_filename
= tmp
;
4977 if (filename_cmp (temp_filename
, gcc_input_filename
) != 0)
4979 #ifndef HOST_LACKS_INODE_NUMBERS
4980 struct stat st_temp
;
4982 /* Note, set_input() resets input_stat_set to 0. */
4983 if (input_stat_set
== 0)
4985 input_stat_set
= stat (gcc_input_filename
,
4987 if (input_stat_set
>= 0)
4991 /* If we have the stat for the gcc_input_filename
4992 and we can do the stat for the temp_filename
4993 then the they could still refer to the same
4994 file if st_dev/st_ino's are the same. */
4995 if (input_stat_set
!= 1
4996 || stat (temp_filename
, &st_temp
) < 0
4997 || input_stat
.st_dev
!= st_temp
.st_dev
4998 || input_stat
.st_ino
!= st_temp
.st_ino
)
5000 /* Just compare canonical pathnames. */
5001 char* input_realname
= lrealpath (gcc_input_filename
);
5002 char* temp_realname
= lrealpath (temp_filename
);
5003 bool files_differ
= filename_cmp (input_realname
, temp_realname
);
5004 free (input_realname
);
5005 free (temp_realname
);
5009 temp_filename
= save_string (temp_filename
,
5010 temp_filename_length
+ 1);
5011 obstack_grow (&obstack
, temp_filename
,
5012 temp_filename_length
);
5014 delete_this_arg
= 0;
5020 /* See if we already have an association of %g/%u/%U and
5022 for (t
= temp_names
; t
; t
= t
->next
)
5023 if (t
->length
== suffix_length
5024 && strncmp (t
->suffix
, suffix
, suffix_length
) == 0
5025 && t
->unique
== (c
== 'u' || c
== 'U' || c
== 'j'))
5028 /* Make a new association if needed. %u and %j
5030 if (t
== 0 || c
== 'u' || c
== 'j')
5034 t
= XNEW (struct temp_name
);
5035 t
->next
= temp_names
;
5038 t
->length
= suffix_length
;
5041 t
->suffix
= saved_suffix
;
5042 saved_suffix
= NULL
;
5045 t
->suffix
= save_string (suffix
, suffix_length
);
5046 t
->unique
= (c
== 'u' || c
== 'U' || c
== 'j');
5047 temp_filename
= make_temp_file (t
->suffix
);
5048 temp_filename_length
= strlen (temp_filename
);
5049 t
->filename
= temp_filename
;
5050 t
->filename_length
= temp_filename_length
;
5053 free (saved_suffix
);
5055 obstack_grow (&obstack
, t
->filename
, t
->filename_length
);
5056 delete_this_arg
= 1;
5064 if (at_file_supplied
)
5066 /* We are going to expand `%i' to `@FILE', where FILE
5067 is a newly-created temporary filename. The filenames
5068 that would usually be expanded in place of %o will be
5069 written to the temporary file. */
5074 for (i
= 0; i
< n_infiles
; i
++)
5075 if (compile_input_file_p (&infiles
[i
]))
5078 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
5080 /* Copy the strings over. */
5081 for (i
= 0, j
= 0; i
< n_infiles
; i
++)
5082 if (compile_input_file_p (&infiles
[i
]))
5084 argv
[j
] = CONST_CAST (char *, infiles
[i
].name
);
5085 infiles
[i
].compiled
= true;
5090 create_at_file (argv
);
5093 for (i
= 0; (int) i
< n_infiles
; i
++)
5094 if (compile_input_file_p (&infiles
[i
]))
5096 store_arg (infiles
[i
].name
, 0, 0);
5097 infiles
[i
].compiled
= true;
5102 obstack_grow (&obstack
, gcc_input_filename
,
5103 input_filename_length
);
5110 struct spec_path_info info
;
5114 do_spec_1 ("-imultilib", 1, NULL
);
5115 /* Make this a separate argument. */
5116 do_spec_1 (" ", 0, NULL
);
5117 do_spec_1 (multilib_dir
, 1, NULL
);
5118 do_spec_1 (" ", 0, NULL
);
5123 do_spec_1 ("-imultiarch", 1, NULL
);
5124 /* Make this a separate argument. */
5125 do_spec_1 (" ", 0, NULL
);
5126 do_spec_1 (multiarch_dir
, 1, NULL
);
5127 do_spec_1 (" ", 0, NULL
);
5130 if (gcc_exec_prefix
)
5132 do_spec_1 ("-iprefix", 1, NULL
);
5133 /* Make this a separate argument. */
5134 do_spec_1 (" ", 0, NULL
);
5135 do_spec_1 (gcc_exec_prefix
, 1, NULL
);
5136 do_spec_1 (" ", 0, NULL
);
5139 if (target_system_root_changed
||
5140 (target_system_root
&& target_sysroot_hdrs_suffix
))
5142 do_spec_1 ("-isysroot", 1, NULL
);
5143 /* Make this a separate argument. */
5144 do_spec_1 (" ", 0, NULL
);
5145 do_spec_1 (target_system_root
, 1, NULL
);
5146 if (target_sysroot_hdrs_suffix
)
5147 do_spec_1 (target_sysroot_hdrs_suffix
, 1, NULL
);
5148 do_spec_1 (" ", 0, NULL
);
5151 info
.option
= "-isystem";
5152 info
.append
= "include";
5153 info
.append_len
= strlen (info
.append
);
5154 info
.omit_relative
= false;
5155 info
.separate_options
= true;
5157 for_each_path (&include_prefixes
, false, info
.append_len
,
5160 info
.append
= "include-fixed";
5161 if (*sysroot_hdrs_suffix_spec
)
5162 info
.append
= concat (info
.append
, dir_separator_str
,
5163 multilib_dir
, NULL
);
5164 info
.append_len
= strlen (info
.append
);
5165 for_each_path (&include_prefixes
, false, info
.append_len
,
5172 int max
= n_infiles
;
5173 max
+= lang_specific_extra_outfiles
;
5175 if (HAVE_GNU_LD
&& at_file_supplied
)
5177 /* We are going to expand `%o' to `@FILE', where FILE
5178 is a newly-created temporary filename. The filenames
5179 that would usually be expanded in place of %o will be
5180 written to the temporary file. */
5185 /* Convert OUTFILES into a form suitable for writeargv. */
5187 /* Determine how many are non-NULL. */
5188 for (n_files
= 0, i
= 0; i
< max
; i
++)
5189 n_files
+= outfiles
[i
] != NULL
;
5191 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
5193 /* Copy the strings over. */
5194 for (i
= 0, j
= 0; i
< max
; i
++)
5197 argv
[j
] = CONST_CAST (char *, outfiles
[i
]);
5202 create_at_file (argv
);
5205 for (i
= 0; i
< max
; i
++)
5207 store_arg (outfiles
[i
], 0, 0);
5212 obstack_grow (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
5217 this_is_library_file
= 1;
5221 this_is_linker_script
= 1;
5225 outfiles
[input_file_number
] = NULL
;
5229 this_is_output_file
= 1;
5234 unsigned int cur_index
= argbuf
.length ();
5235 /* Handle the {...} following the %W. */
5237 fatal_error ("spec %qs has invalid %<%%W%c%>", spec
, *p
);
5238 p
= handle_braces (p
+ 1);
5242 /* If any args were output, mark the last one for deletion
5244 if (argbuf
.length () != cur_index
)
5245 record_temp_file (argbuf
.last (), 0, 1);
5249 /* %x{OPTION} records OPTION for %X to output. */
5257 /* Skip past the option value and make a copy. */
5259 fatal_error ("spec %qs has invalid %<%%x%c%>", spec
, *p
);
5262 string
= save_string (p1
+ 1, p
- p1
- 2);
5264 /* See if we already recorded this option. */
5265 FOR_EACH_VEC_ELT (linker_options
, ix
, opt
)
5266 if (! strcmp (string
, opt
))
5272 /* This option is new; add it. */
5273 add_linker_option (string
, strlen (string
));
5278 /* Dump out the options accumulated previously using %x. */
5280 do_specs_vec (linker_options
);
5283 /* Dump out the options accumulated previously using -Wa,. */
5285 do_specs_vec (assembler_options
);
5288 /* Dump out the options accumulated previously using -Wp,. */
5290 do_specs_vec (preprocessor_options
);
5293 /* Here are digits and numbers that just process
5294 a certain constant string as a spec. */
5297 value
= do_spec_1 (cc1_spec
, 0, NULL
);
5303 value
= do_spec_1 (cc1plus_spec
, 0, NULL
);
5309 value
= do_spec_1 (asm_spec
, 0, NULL
);
5315 value
= do_spec_1 (asm_final_spec
, 0, NULL
);
5322 const char *const spec
5323 = (input_file_compiler
->cpp_spec
5324 ? input_file_compiler
->cpp_spec
5326 value
= do_spec_1 (spec
, 0, NULL
);
5333 value
= do_spec_1 (endfile_spec
, 0, NULL
);
5339 value
= do_spec_1 (link_spec
, 0, NULL
);
5345 value
= do_spec_1 (lib_spec
, 0, NULL
);
5351 if (multilib_os_dir
== NULL
)
5352 obstack_1grow (&obstack
, '.');
5354 obstack_grow (&obstack
, multilib_os_dir
,
5355 strlen (multilib_os_dir
));
5359 value
= do_spec_1 (libgcc_spec
, 0, NULL
);
5365 /* We assume there is a directory
5366 separator at the end of this string. */
5367 if (target_system_root
)
5369 obstack_grow (&obstack
, target_system_root
,
5370 strlen (target_system_root
));
5371 if (target_sysroot_suffix
)
5372 obstack_grow (&obstack
, target_sysroot_suffix
,
5373 strlen (target_sysroot_suffix
));
5378 value
= do_spec_1 (startfile_spec
, 0, NULL
);
5383 /* Here we define characters other than letters and digits. */
5386 p
= handle_braces (p
);
5392 p
= handle_spec_function (p
, NULL
);
5398 obstack_1grow (&obstack
, '%');
5405 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '%')
5407 suffix_subst
= save_string (p
- 1, len
+ 1);
5412 /* Henceforth ignore the option(s) matching the pattern
5418 int have_wildcard
= 0;
5423 switch_option
= SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
;
5425 switch_option
= SWITCH_IGNORE
;
5427 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '\t')
5430 if (p
[len
-1] == '*')
5433 for (i
= 0; i
< n_switches
; i
++)
5434 if (!strncmp (switches
[i
].part1
, p
, len
- have_wildcard
)
5435 && (have_wildcard
|| switches
[i
].part1
[len
] == '\0'))
5437 switches
[i
].live_cond
|= switch_option
;
5438 /* User switch be validated from validate_all_switches.
5439 when the definition is seen from the spec file.
5440 If not defined anywhere, will be rejected. */
5441 if (switches
[i
].known
)
5442 switches
[i
].validated
= true;
5450 if (soft_matched_part
)
5452 if (soft_matched_part
[0])
5453 do_spec_1 (soft_matched_part
, 1, NULL
);
5454 /* Only insert a space after the substitution if it is at the
5455 end of the current sequence. So if:
5457 "%{foo=*:bar%*}%{foo=*:one%*two}"
5459 matches -foo=hello then it will produce:
5461 barhello onehellotwo
5463 if (*p
== 0 || *p
== '}')
5464 do_spec_1 (" ", 0, NULL
);
5467 /* Catch the case where a spec string contains something like
5468 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5469 hand side of the :. */
5470 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5473 /* Process a string found as the value of a spec given by name.
5474 This feature allows individual machine descriptions
5475 to add and use their own specs. */
5478 const char *name
= p
;
5479 struct spec_list
*sl
;
5482 /* The string after the S/P is the name of a spec that is to be
5484 while (*p
&& *p
!= ')')
5487 /* See if it's in the list. */
5488 for (len
= p
- name
, sl
= specs
; sl
; sl
= sl
->next
)
5489 if (sl
->name_len
== len
&& !strncmp (sl
->name
, name
, len
))
5491 name
= *(sl
->ptr_spec
);
5493 fnotice (stderr
, "Processing spec (%s), which is '%s'\n",
5501 value
= do_spec_1 (name
, 0, NULL
);
5506 /* Discard the closing paren. */
5513 error ("spec failure: unrecognized spec option %qc", c
);
5519 /* Backslash: treat next character as ordinary. */
5524 /* Ordinary character: put it into the current argument. */
5525 obstack_1grow (&obstack
, c
);
5529 /* End of string. If we are processing a spec function, we need to
5530 end any pending argument. */
5531 if (processing_spec_function
)
5537 /* Look up a spec function. */
5539 static const struct spec_function
*
5540 lookup_spec_function (const char *name
)
5542 const struct spec_function
*sf
;
5544 for (sf
= static_spec_functions
; sf
->name
!= NULL
; sf
++)
5545 if (strcmp (sf
->name
, name
) == 0)
5551 /* Evaluate a spec function. */
5554 eval_spec_function (const char *func
, const char *args
)
5556 const struct spec_function
*sf
;
5557 const char *funcval
;
5559 /* Saved spec processing context. */
5560 vec
<const_char_p
> save_argbuf
;
5563 int save_delete_this_arg
;
5564 int save_this_is_output_file
;
5565 int save_this_is_library_file
;
5566 int save_input_from_pipe
;
5567 int save_this_is_linker_script
;
5568 const char *save_suffix_subst
;
5570 int save_growing_size
;
5571 void *save_growing_value
= NULL
;
5573 sf
= lookup_spec_function (func
);
5575 fatal_error ("unknown spec function %qs", func
);
5577 /* Push the spec processing context. */
5578 save_argbuf
= argbuf
;
5580 save_arg_going
= arg_going
;
5581 save_delete_this_arg
= delete_this_arg
;
5582 save_this_is_output_file
= this_is_output_file
;
5583 save_this_is_library_file
= this_is_library_file
;
5584 save_this_is_linker_script
= this_is_linker_script
;
5585 save_input_from_pipe
= input_from_pipe
;
5586 save_suffix_subst
= suffix_subst
;
5588 /* If we have some object growing now, finalize it so the args and function
5589 eval proceed from a cleared context. This is needed to prevent the first
5590 constructed arg from mistakenly including the growing value. We'll push
5591 this value back on the obstack once the function evaluation is done, to
5592 restore a consistent processing context for our caller. This is fine as
5593 the address of growing objects isn't guaranteed to remain stable until
5594 they are finalized, and we expect this situation to be rare enough for
5595 the extra copy not to be an issue. */
5596 save_growing_size
= obstack_object_size (&obstack
);
5597 if (save_growing_size
> 0)
5598 save_growing_value
= obstack_finish (&obstack
);
5600 /* Create a new spec processing context, and build the function
5604 if (do_spec_2 (args
) < 0)
5605 fatal_error ("error in args to spec function %qs", func
);
5607 /* argbuf_index is an index for the next argument to be inserted, and
5608 so contains the count of the args already inserted. */
5610 funcval
= (*sf
->func
) (argbuf
.length (),
5613 /* Pop the spec processing context. */
5615 argbuf
= save_argbuf
;
5617 arg_going
= save_arg_going
;
5618 delete_this_arg
= save_delete_this_arg
;
5619 this_is_output_file
= save_this_is_output_file
;
5620 this_is_library_file
= save_this_is_library_file
;
5621 this_is_linker_script
= save_this_is_linker_script
;
5622 input_from_pipe
= save_input_from_pipe
;
5623 suffix_subst
= save_suffix_subst
;
5625 if (save_growing_size
> 0)
5626 obstack_grow (&obstack
, save_growing_value
, save_growing_size
);
5631 /* Handle a spec function call of the form:
5635 ARGS is processed as a spec in a separate context and split into an
5636 argument vector in the normal fashion. The function returns a string
5637 containing a spec which we then process in the caller's context, or
5638 NULL if no processing is required.
5640 If RETVAL_NONNULL is not NULL, then store a bool whether function
5641 returned non-NULL. */
5644 handle_spec_function (const char *p
, bool *retval_nonnull
)
5647 const char *endp
, *funcval
;
5650 processing_spec_function
++;
5652 /* Get the function name. */
5653 for (endp
= p
; *endp
!= '\0'; endp
++)
5655 if (*endp
== '(') /* ) */
5657 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5658 if (!ISALNUM (*endp
) && !(*endp
== '-' || *endp
== '_'))
5659 fatal_error ("malformed spec function name");
5661 if (*endp
!= '(') /* ) */
5662 fatal_error ("no arguments for spec function");
5663 func
= save_string (p
, endp
- p
);
5666 /* Get the arguments. */
5667 for (count
= 0; *endp
!= '\0'; endp
++)
5676 else if (*endp
== '(') /* ) */
5681 fatal_error ("malformed spec function arguments");
5682 args
= save_string (p
, endp
- p
);
5685 /* p now points to just past the end of the spec function expression. */
5687 funcval
= eval_spec_function (func
, args
);
5688 if (funcval
!= NULL
&& do_spec_1 (funcval
, 0, NULL
) < 0)
5691 *retval_nonnull
= funcval
!= NULL
;
5696 processing_spec_function
--;
5701 /* Inline subroutine of handle_braces. Returns true if the current
5702 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5704 input_suffix_matches (const char *atom
, const char *end_atom
)
5706 return (input_suffix
5707 && !strncmp (input_suffix
, atom
, end_atom
- atom
)
5708 && input_suffix
[end_atom
- atom
] == '\0');
5711 /* Subroutine of handle_braces. Returns true if the current
5712 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5714 input_spec_matches (const char *atom
, const char *end_atom
)
5716 return (input_file_compiler
5717 && input_file_compiler
->suffix
5718 && input_file_compiler
->suffix
[0] != '\0'
5719 && !strncmp (input_file_compiler
->suffix
+ 1, atom
,
5721 && input_file_compiler
->suffix
[end_atom
- atom
+ 1] == '\0');
5724 /* Subroutine of handle_braces. Returns true if a switch
5725 matching the atom bracketed by ATOM and END_ATOM appeared on the
5728 switch_matches (const char *atom
, const char *end_atom
, int starred
)
5731 int len
= end_atom
- atom
;
5732 int plen
= starred
? len
: -1;
5734 for (i
= 0; i
< n_switches
; i
++)
5735 if (!strncmp (switches
[i
].part1
, atom
, len
)
5736 && (starred
|| switches
[i
].part1
[len
] == '\0')
5737 && check_live_switch (i
, plen
))
5740 /* Check if a switch with separated form matching the atom.
5741 We check -D and -U switches. */
5742 else if (switches
[i
].args
!= 0)
5744 if ((*switches
[i
].part1
== 'D' || *switches
[i
].part1
== 'U')
5745 && *switches
[i
].part1
== atom
[0])
5747 if (!strncmp (switches
[i
].args
[0], &atom
[1], len
- 1)
5748 && (starred
|| (switches
[i
].part1
[1] == '\0'
5749 && switches
[i
].args
[0][len
- 1] == '\0'))
5750 && check_live_switch (i
, (starred
? 1 : -1)))
5758 /* Inline subroutine of handle_braces. Mark all of the switches which
5759 match ATOM (extends to END_ATOM; STARRED indicates whether there
5760 was a star after the atom) for later processing. */
5762 mark_matching_switches (const char *atom
, const char *end_atom
, int starred
)
5765 int len
= end_atom
- atom
;
5766 int plen
= starred
? len
: -1;
5768 for (i
= 0; i
< n_switches
; i
++)
5769 if (!strncmp (switches
[i
].part1
, atom
, len
)
5770 && (starred
|| switches
[i
].part1
[len
] == '\0')
5771 && check_live_switch (i
, plen
))
5772 switches
[i
].ordering
= 1;
5775 /* Inline subroutine of handle_braces. Process all the currently
5776 marked switches through give_switch, and clear the marks. */
5778 process_marked_switches (void)
5782 for (i
= 0; i
< n_switches
; i
++)
5783 if (switches
[i
].ordering
== 1)
5785 switches
[i
].ordering
= 0;
5790 /* Handle a %{ ... } construct. P points just inside the leading {.
5791 Returns a pointer one past the end of the brace block, or 0
5792 if we call do_spec_1 and that returns -1. */
5795 handle_braces (const char *p
)
5797 const char *atom
, *end_atom
;
5798 const char *d_atom
= NULL
, *d_end_atom
= NULL
;
5799 const char *orig
= p
;
5807 bool a_must_be_last
= false;
5808 bool ordered_set
= false;
5809 bool disjunct_set
= false;
5810 bool disj_matched
= false;
5811 bool disj_starred
= true;
5812 bool n_way_choice
= false;
5813 bool n_way_matched
= false;
5815 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5822 /* Scan one "atom" (S in the description above of %{}, possibly
5823 with '!', '.', '@', ',', or '*' modifiers). */
5825 a_is_suffix
= false;
5826 a_is_starred
= false;
5827 a_is_negated
= false;
5828 a_is_spectype
= false;
5832 p
++, a_is_negated
= true;
5835 if (*p
== '%' && p
[1] == ':')
5839 p
= handle_spec_function (p
+ 2, &a_matched
);
5844 p
++, a_is_suffix
= true;
5846 p
++, a_is_spectype
= true;
5849 while (ISIDNUM (*p
) || *p
== '-' || *p
== '+' || *p
== '='
5850 || *p
== ',' || *p
== '.' || *p
== '@')
5855 p
++, a_is_starred
= 1;
5862 /* Substitute the switch(es) indicated by the current atom. */
5864 if (disjunct_set
|| n_way_choice
|| a_is_negated
|| a_is_suffix
5865 || a_is_spectype
|| atom
== end_atom
)
5868 mark_matching_switches (atom
, end_atom
, a_is_starred
);
5871 process_marked_switches ();
5875 /* Substitute some text if the current atom appears as a switch
5877 disjunct_set
= true;
5881 if (atom
&& atom
== end_atom
)
5883 if (!n_way_choice
|| disj_matched
|| *p
== '|'
5884 || a_is_negated
|| a_is_suffix
|| a_is_spectype
5888 /* An empty term may appear as the last choice of an
5889 N-way choice set; it means "otherwise". */
5890 a_must_be_last
= true;
5891 disj_matched
= !n_way_matched
;
5892 disj_starred
= false;
5896 if ((a_is_suffix
|| a_is_spectype
) && a_is_starred
)
5900 disj_starred
= false;
5902 /* Don't bother testing this atom if we already have a
5904 if (!disj_matched
&& !n_way_matched
)
5907 /* a_matched is already set by handle_spec_function. */;
5908 else if (a_is_suffix
)
5909 a_matched
= input_suffix_matches (atom
, end_atom
);
5910 else if (a_is_spectype
)
5911 a_matched
= input_spec_matches (atom
, end_atom
);
5913 a_matched
= switch_matches (atom
, end_atom
, a_is_starred
);
5915 if (a_matched
!= a_is_negated
)
5917 disj_matched
= true;
5919 d_end_atom
= end_atom
;
5926 /* Found the body, that is, the text to substitute if the
5927 current disjunction matches. */
5928 p
= process_brace_body (p
+ 1, d_atom
, d_end_atom
, disj_starred
,
5929 disj_matched
&& !n_way_matched
);
5933 /* If we have an N-way choice, reset state for the next
5937 n_way_choice
= true;
5938 n_way_matched
|= disj_matched
;
5939 disj_matched
= false;
5940 disj_starred
= true;
5941 d_atom
= d_end_atom
= NULL
;
5950 while (*p
++ != '}');
5955 fatal_error ("braced spec %qs is invalid at %qc", orig
, *p
);
5960 /* Subroutine of handle_braces. Scan and process a brace substitution body
5961 (X in the description of %{} syntax). P points one past the colon;
5962 ATOM and END_ATOM bracket the first atom which was found to be true
5963 (present) in the current disjunction; STARRED indicates whether all
5964 the atoms in the current disjunction were starred (for syntax validation);
5965 MATCHED indicates whether the disjunction matched or not, and therefore
5966 whether or not the body is to be processed through do_spec_1 or just
5967 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5971 process_brace_body (const char *p
, const char *atom
, const char *end_atom
,
5972 int starred
, int matched
)
5974 const char *body
, *end_body
;
5975 unsigned int nesting_level
;
5976 bool have_subst
= false;
5978 /* Locate the closing } or ;, honoring nested braces.
5979 Trim trailing whitespace. */
5988 if (!--nesting_level
)
5991 else if (*p
== ';' && nesting_level
== 1)
5993 else if (*p
== '%' && p
[1] == '*' && nesting_level
== 1)
5995 else if (*p
== '\0')
6001 while (end_body
[-1] == ' ' || end_body
[-1] == '\t')
6004 if (have_subst
&& !starred
)
6009 /* Copy the substitution body to permanent storage and execute it.
6010 If have_subst is false, this is a simple matter of running the
6011 body through do_spec_1... */
6012 char *string
= save_string (body
, end_body
- body
);
6015 if (do_spec_1 (string
, 0, NULL
) < 0)
6020 /* ... but if have_subst is true, we have to process the
6021 body once for each matching switch, with %* set to the
6022 variant part of the switch. */
6023 unsigned int hard_match_len
= end_atom
- atom
;
6026 for (i
= 0; i
< n_switches
; i
++)
6027 if (!strncmp (switches
[i
].part1
, atom
, hard_match_len
)
6028 && check_live_switch (i
, hard_match_len
))
6030 if (do_spec_1 (string
, 0,
6031 &switches
[i
].part1
[hard_match_len
]) < 0)
6033 /* Pass any arguments this switch has. */
6035 suffix_subst
= NULL
;
6043 fatal_error ("braced spec body %qs is invalid", body
);
6046 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
6047 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
6048 spec, or -1 if either exact match or %* is used.
6050 A -O switch is obsoleted by a later -O switch. A -f, -g, -m, or -W switch
6051 whose value does not begin with "no-" is obsoleted by the same value
6052 with the "no-", similarly for a switch with the "no-" prefix. */
6055 check_live_switch (int switchnum
, int prefix_length
)
6057 const char *name
= switches
[switchnum
].part1
;
6060 /* If we already processed this switch and determined if it was
6061 live or not, return our past determination. */
6062 if (switches
[switchnum
].live_cond
!= 0)
6063 return ((switches
[switchnum
].live_cond
& SWITCH_LIVE
) != 0
6064 && (switches
[switchnum
].live_cond
& SWITCH_FALSE
) == 0
6065 && (switches
[switchnum
].live_cond
& SWITCH_IGNORE_PERMANENTLY
)
6068 /* In the common case of {<at-most-one-letter>*}, a negating
6069 switch would always match, so ignore that case. We will just
6070 send the conflicting switches to the compiler phase. */
6071 if (prefix_length
>= 0 && prefix_length
<= 1)
6074 /* Now search for duplicate in a manner that depends on the name. */
6078 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
6079 if (switches
[i
].part1
[0] == 'O')
6081 switches
[switchnum
].validated
= true;
6082 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
6087 case 'W': case 'f': case 'm': case 'g':
6088 if (! strncmp (name
+ 1, "no-", 3))
6090 /* We have Xno-YYY, search for XYYY. */
6091 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
6092 if (switches
[i
].part1
[0] == name
[0]
6093 && ! strcmp (&switches
[i
].part1
[1], &name
[4]))
6095 /* --specs are validated with the validate_switches mechanism. */
6096 if (switches
[switchnum
].known
)
6097 switches
[switchnum
].validated
= true;
6098 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
6104 /* We have XYYY, search for Xno-YYY. */
6105 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
6106 if (switches
[i
].part1
[0] == name
[0]
6107 && switches
[i
].part1
[1] == 'n'
6108 && switches
[i
].part1
[2] == 'o'
6109 && switches
[i
].part1
[3] == '-'
6110 && !strcmp (&switches
[i
].part1
[4], &name
[1]))
6112 /* --specs are validated with the validate_switches mechanism. */
6113 if (switches
[switchnum
].known
)
6114 switches
[switchnum
].validated
= true;
6115 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
6122 /* Otherwise the switch is live. */
6123 switches
[switchnum
].live_cond
|= SWITCH_LIVE
;
6127 /* Pass a switch to the current accumulating command
6128 in the same form that we received it.
6129 SWITCHNUM identifies the switch; it is an index into
6130 the vector of switches gcc received, which is `switches'.
6131 This cannot fail since it never finishes a command line.
6133 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
6136 give_switch (int switchnum
, int omit_first_word
)
6138 if ((switches
[switchnum
].live_cond
& SWITCH_IGNORE
) != 0)
6141 if (!omit_first_word
)
6143 do_spec_1 ("-", 0, NULL
);
6144 do_spec_1 (switches
[switchnum
].part1
, 1, NULL
);
6147 if (switches
[switchnum
].args
!= 0)
6150 for (p
= switches
[switchnum
].args
; *p
; p
++)
6152 const char *arg
= *p
;
6154 do_spec_1 (" ", 0, NULL
);
6157 unsigned length
= strlen (arg
);
6160 while (length
-- && !IS_DIR_SEPARATOR (arg
[length
]))
6161 if (arg
[length
] == '.')
6163 (CONST_CAST (char *, arg
))[length
] = 0;
6167 do_spec_1 (arg
, 1, NULL
);
6169 (CONST_CAST (char *, arg
))[length
] = '.';
6170 do_spec_1 (suffix_subst
, 1, NULL
);
6173 do_spec_1 (arg
, 1, NULL
);
6177 do_spec_1 (" ", 0, NULL
);
6178 switches
[switchnum
].validated
= true;
6181 /* Search for a file named NAME trying various prefixes including the
6182 user's -B prefix and some standard ones.
6183 Return the absolute file name found. If nothing is found, return NAME. */
6186 find_file (const char *name
)
6188 char *newname
= find_a_file (&startfile_prefixes
, name
, R_OK
, true);
6189 return newname
? newname
: name
;
6192 /* Determine whether a directory exists. If LINKER, return 0 for
6193 certain fixed names not needed by the linker. */
6196 is_directory (const char *path1
, bool linker
)
6203 /* Ensure the string ends with "/.". The resulting path will be a
6204 directory even if the given path is a symbolic link. */
6205 len1
= strlen (path1
);
6206 path
= (char *) alloca (3 + len1
);
6207 memcpy (path
, path1
, len1
);
6209 if (!IS_DIR_SEPARATOR (cp
[-1]))
6210 *cp
++ = DIR_SEPARATOR
;
6214 /* Exclude directories that the linker is known to search. */
6216 && IS_DIR_SEPARATOR (path
[0])
6218 && filename_ncmp (path
+ 1, "lib", 3) == 0)
6220 && filename_ncmp (path
+ 1, "usr", 3) == 0
6221 && IS_DIR_SEPARATOR (path
[4])
6222 && filename_ncmp (path
+ 5, "lib", 3) == 0)))
6225 return (stat (path
, &st
) >= 0 && S_ISDIR (st
.st_mode
));
6228 /* Set up the various global variables to indicate that we're processing
6229 the input file named FILENAME. */
6232 set_input (const char *filename
)
6236 gcc_input_filename
= filename
;
6237 input_filename_length
= strlen (gcc_input_filename
);
6238 input_basename
= lbasename (gcc_input_filename
);
6240 /* Find a suffix starting with the last period,
6241 and set basename_length to exclude that suffix. */
6242 basename_length
= strlen (input_basename
);
6243 suffixed_basename_length
= basename_length
;
6244 p
= input_basename
+ basename_length
;
6245 while (p
!= input_basename
&& *p
!= '.')
6247 if (*p
== '.' && p
!= input_basename
)
6249 basename_length
= p
- input_basename
;
6250 input_suffix
= p
+ 1;
6255 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
6256 we will need to do a stat on the gcc_input_filename. The
6257 INPUT_STAT_SET signals that the stat is needed. */
6261 /* On fatal signals, delete all the temporary files. */
6264 fatal_signal (int signum
)
6266 signal (signum
, SIG_DFL
);
6267 delete_failure_queue ();
6268 delete_temp_files ();
6269 /* Get the same signal again, this time not handled,
6270 so its normal effect occurs. */
6271 kill (getpid (), signum
);
6274 /* Compare the contents of the two files named CMPFILE[0] and
6275 CMPFILE[1]. Return zero if they're identical, nonzero
6279 compare_files (char *cmpfile
[])
6282 FILE *temp
[2] = { NULL
, NULL
};
6288 void *map
[2] = { NULL
, NULL
};
6290 for (i
= 0; i
< 2; i
++)
6294 if (stat (cmpfile
[i
], &st
) < 0 || !S_ISREG (st
.st_mode
))
6296 error ("%s: could not determine length of compare-debug file %s",
6297 gcc_input_filename
, cmpfile
[i
]);
6302 length
[i
] = st
.st_size
;
6305 if (!ret
&& length
[0] != length
[1])
6307 error ("%s: -fcompare-debug failure (length)", gcc_input_filename
);
6312 for (i
= 0; i
< 2; i
++)
6314 int fd
= open (cmpfile
[i
], O_RDONLY
);
6317 error ("%s: could not open compare-debug file %s",
6318 gcc_input_filename
, cmpfile
[i
]);
6323 map
[i
] = mmap (NULL
, length
[i
], PROT_READ
, MAP_PRIVATE
, fd
, 0);
6326 if (map
[i
] == (void *) MAP_FAILED
)
6335 if (memcmp (map
[0], map
[1], length
[0]) != 0)
6337 error ("%s: -fcompare-debug failure", gcc_input_filename
);
6342 for (i
= 0; i
< 2; i
++)
6344 munmap ((caddr_t
) map
[i
], length
[i
]);
6353 for (i
= 0; i
< 2; i
++)
6355 temp
[i
] = fopen (cmpfile
[i
], "r");
6358 error ("%s: could not open compare-debug file %s",
6359 gcc_input_filename
, cmpfile
[i
]);
6365 if (!ret
&& temp
[0] && temp
[1])
6369 c0
= fgetc (temp
[0]);
6370 c1
= fgetc (temp
[1]);
6374 error ("%s: -fcompare-debug failure",
6375 gcc_input_filename
);
6384 for (i
= 1; i
>= 0; i
--)
6393 extern int main (int, char **);
6396 main (int argc
, char **argv
)
6400 int linker_was_run
= 0;
6401 int lang_n_infiles
= 0;
6402 int num_linker_inputs
= 0;
6403 char *explicit_link_files
;
6405 char *lto_wrapper_file
;
6407 struct user_specs
*uptr
;
6408 char **old_argv
= argv
;
6409 struct cl_decoded_option
*decoded_options
;
6410 unsigned int decoded_options_count
;
6412 p
= argv
[0] + strlen (argv
[0]);
6413 while (p
!= argv
[0] && !IS_DIR_SEPARATOR (p
[-1]))
6417 xmalloc_set_program_name (progname
);
6419 expandargv (&argc
, &argv
);
6421 /* Determine if any expansions were made. */
6422 if (argv
!= old_argv
)
6423 at_file_supplied
= true;
6425 /* Register the language-independent parameters. */
6426 global_init_params ();
6429 init_options_struct (&global_options
, &global_options_set
);
6431 decode_cmdline_options_to_array (argc
, CONST_CAST2 (const char **, char **,
6434 &decoded_options
, &decoded_options_count
);
6436 /* Unlock the stdio streams. */
6437 unlock_std_streams ();
6439 gcc_init_libintl ();
6441 diagnostic_initialize (global_dc
, 0);
6443 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6444 /* Perform host dependent initialization when needed. */
6445 GCC_DRIVER_HOST_INITIALIZATION
;
6448 if (atexit (delete_temp_files
) != 0)
6449 fatal_error ("atexit failed");
6451 if (signal (SIGINT
, SIG_IGN
) != SIG_IGN
)
6452 signal (SIGINT
, fatal_signal
);
6454 if (signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
6455 signal (SIGHUP
, fatal_signal
);
6457 if (signal (SIGTERM
, SIG_IGN
) != SIG_IGN
)
6458 signal (SIGTERM
, fatal_signal
);
6460 if (signal (SIGPIPE
, SIG_IGN
) != SIG_IGN
)
6461 signal (SIGPIPE
, fatal_signal
);
6464 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6465 receive the signal. A different setting is inheritable */
6466 signal (SIGCHLD
, SIG_DFL
);
6469 /* Parsing and gimplification sometimes need quite large stack.
6470 Increase stack size limits if possible. */
6471 stack_limit_increase (64 * 1024 * 1024);
6473 /* Allocate the argument vector. */
6476 obstack_init (&obstack
);
6478 /* Build multilib_select, et. al from the separate lines that make up each
6479 multilib selection. */
6481 const char *const *q
= multilib_raw
;
6484 obstack_init (&multilib_obstack
);
6485 while ((p
= *q
++) != (char *) 0)
6486 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6488 obstack_1grow (&multilib_obstack
, 0);
6489 multilib_select
= XOBFINISH (&multilib_obstack
, const char *);
6491 q
= multilib_matches_raw
;
6492 while ((p
= *q
++) != (char *) 0)
6493 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6495 obstack_1grow (&multilib_obstack
, 0);
6496 multilib_matches
= XOBFINISH (&multilib_obstack
, const char *);
6498 q
= multilib_exclusions_raw
;
6499 while ((p
= *q
++) != (char *) 0)
6500 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6502 obstack_1grow (&multilib_obstack
, 0);
6503 multilib_exclusions
= XOBFINISH (&multilib_obstack
, const char *);
6505 q
= multilib_reuse_raw
;
6506 while ((p
= *q
++) != (char *) 0)
6507 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6509 obstack_1grow (&multilib_obstack
, 0);
6510 multilib_reuse
= XOBFINISH (&multilib_obstack
, const char *);
6513 for (i
= 0; i
< ARRAY_SIZE (multilib_defaults_raw
); i
++)
6516 obstack_1grow (&multilib_obstack
, ' ');
6517 obstack_grow (&multilib_obstack
,
6518 multilib_defaults_raw
[i
],
6519 strlen (multilib_defaults_raw
[i
]));
6523 obstack_1grow (&multilib_obstack
, 0);
6524 multilib_defaults
= XOBFINISH (&multilib_obstack
, const char *);
6527 #ifdef INIT_ENVIRONMENT
6528 /* Set up any other necessary machine specific environment variables. */
6529 xputenv (INIT_ENVIRONMENT
);
6532 /* Make a table of what switches there are (switches, n_switches).
6533 Make a table of specified input files (infiles, n_infiles).
6534 Decode switches that are handled locally. */
6536 process_command (decoded_options_count
, decoded_options
);
6538 /* Initialize the vector of specs to just the default.
6539 This means one element containing 0s, as a terminator. */
6541 compilers
= XNEWVAR (struct compiler
, sizeof default_compilers
);
6542 memcpy (compilers
, default_compilers
, sizeof default_compilers
);
6543 n_compilers
= n_default_compilers
;
6545 /* Read specs from a file if there is one. */
6547 machine_suffix
= concat (spec_machine
, dir_separator_str
,
6548 spec_version
, dir_separator_str
, NULL
);
6549 just_machine_suffix
= concat (spec_machine
, dir_separator_str
, NULL
);
6551 specs_file
= find_a_file (&startfile_prefixes
, "specs", R_OK
, true);
6552 /* Read the specs file unless it is a default one. */
6553 if (specs_file
!= 0 && strcmp (specs_file
, "specs"))
6554 read_specs (specs_file
, true, false);
6558 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6559 for any override of as, ld and libraries. */
6560 specs_file
= (char *) alloca (strlen (standard_exec_prefix
)
6561 + strlen (just_machine_suffix
) + sizeof ("specs"));
6563 strcpy (specs_file
, standard_exec_prefix
);
6564 strcat (specs_file
, just_machine_suffix
);
6565 strcat (specs_file
, "specs");
6566 if (access (specs_file
, R_OK
) == 0)
6567 read_specs (specs_file
, true, false);
6569 /* Process any configure-time defaults specified for the command line
6570 options, via OPTION_DEFAULT_SPECS. */
6571 for (i
= 0; i
< ARRAY_SIZE (option_default_specs
); i
++)
6572 do_option_spec (option_default_specs
[i
].name
,
6573 option_default_specs
[i
].spec
);
6575 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6576 of the command line. */
6578 for (i
= 0; i
< ARRAY_SIZE (driver_self_specs
); i
++)
6579 do_self_spec (driver_self_specs
[i
]);
6581 /* If not cross-compiling, look for executables in the standard
6583 if (*cross_compile
== '0')
6585 if (*md_exec_prefix
)
6587 add_prefix (&exec_prefixes
, md_exec_prefix
, "GCC",
6588 PREFIX_PRIORITY_LAST
, 0, 0);
6592 /* Process sysroot_suffix_spec. */
6593 if (*sysroot_suffix_spec
!= 0
6594 && !no_sysroot_suffix
6595 && do_spec_2 (sysroot_suffix_spec
) == 0)
6597 if (argbuf
.length () > 1)
6598 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6599 else if (argbuf
.length () == 1)
6600 target_sysroot_suffix
= xstrdup (argbuf
.last ());
6603 #ifdef HAVE_LD_SYSROOT
6604 /* Pass the --sysroot option to the linker, if it supports that. If
6605 there is a sysroot_suffix_spec, it has already been processed by
6606 this point, so target_system_root really is the system root we
6608 if (target_system_root
)
6610 obstack_grow (&obstack
, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6611 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
6612 set_spec ("link", XOBFINISH (&obstack
, const char *), false);
6616 /* Process sysroot_hdrs_suffix_spec. */
6617 if (*sysroot_hdrs_suffix_spec
!= 0
6618 && !no_sysroot_suffix
6619 && do_spec_2 (sysroot_hdrs_suffix_spec
) == 0)
6621 if (argbuf
.length () > 1)
6622 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6623 else if (argbuf
.length () == 1)
6624 target_sysroot_hdrs_suffix
= xstrdup (argbuf
.last ());
6627 /* Look for startfiles in the standard places. */
6628 if (*startfile_prefix_spec
!= 0
6629 && do_spec_2 (startfile_prefix_spec
) == 0
6630 && do_spec_1 (" ", 0, NULL
) == 0)
6634 FOR_EACH_VEC_ELT (argbuf
, ndx
, arg
)
6635 add_sysrooted_prefix (&startfile_prefixes
, arg
, "BINUTILS",
6636 PREFIX_PRIORITY_LAST
, 0, 1);
6638 /* We should eventually get rid of all these and stick to
6639 startfile_prefix_spec exclusively. */
6640 else if (*cross_compile
== '0' || target_system_root
)
6642 if (*md_startfile_prefix
)
6643 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix
,
6644 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
6646 if (*md_startfile_prefix_1
)
6647 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix_1
,
6648 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
6650 /* If standard_startfile_prefix is relative, base it on
6651 standard_exec_prefix. This lets us move the installed tree
6652 as a unit. If GCC_EXEC_PREFIX is defined, base
6653 standard_startfile_prefix on that as well.
6655 If the prefix is relative, only search it for native compilers;
6656 otherwise we will search a directory containing host libraries. */
6657 if (IS_ABSOLUTE_PATH (standard_startfile_prefix
))
6658 add_sysrooted_prefix (&startfile_prefixes
,
6659 standard_startfile_prefix
, "BINUTILS",
6660 PREFIX_PRIORITY_LAST
, 0, 1);
6661 else if (*cross_compile
== '0')
6663 add_prefix (&startfile_prefixes
,
6664 concat (gcc_exec_prefix
6665 ? gcc_exec_prefix
: standard_exec_prefix
,
6667 standard_startfile_prefix
, NULL
),
6668 NULL
, PREFIX_PRIORITY_LAST
, 0, 1);
6671 /* Sysrooted prefixes are relocated because target_system_root is
6672 also relocated by gcc_exec_prefix. */
6673 if (*standard_startfile_prefix_1
)
6674 add_sysrooted_prefix (&startfile_prefixes
,
6675 standard_startfile_prefix_1
, "BINUTILS",
6676 PREFIX_PRIORITY_LAST
, 0, 1);
6677 if (*standard_startfile_prefix_2
)
6678 add_sysrooted_prefix (&startfile_prefixes
,
6679 standard_startfile_prefix_2
, "BINUTILS",
6680 PREFIX_PRIORITY_LAST
, 0, 1);
6683 /* Process any user specified specs in the order given on the command
6685 for (uptr
= user_specs_head
; uptr
; uptr
= uptr
->next
)
6687 char *filename
= find_a_file (&startfile_prefixes
, uptr
->filename
,
6689 read_specs (filename
? filename
: uptr
->filename
, false, true);
6692 /* Process any user self specs. */
6694 struct spec_list
*sl
;
6695 for (sl
= specs
; sl
; sl
= sl
->next
)
6696 if (sl
->name_len
== sizeof "self_spec" - 1
6697 && !strcmp (sl
->name
, "self_spec"))
6698 do_self_spec (*sl
->ptr_spec
);
6703 enum save_temps save
;
6705 if (!compare_debug_second
)
6707 n_switches_debug_check
[1] = n_switches
;
6708 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
6709 switches_debug_check
[1] = XDUPVEC (struct switchstr
, switches
,
6712 do_self_spec ("%:compare-debug-self-opt()");
6713 n_switches_debug_check
[0] = n_switches
;
6714 n_switches_alloc_debug_check
[0] = n_switches_alloc
;
6715 switches_debug_check
[0] = switches
;
6717 n_switches
= n_switches_debug_check
[1];
6718 n_switches_alloc
= n_switches_alloc_debug_check
[1];
6719 switches
= switches_debug_check
[1];
6722 /* Avoid crash when computing %j in this early. */
6723 save
= save_temps_flag
;
6724 save_temps_flag
= SAVE_TEMPS_NONE
;
6726 compare_debug
= -compare_debug
;
6727 do_self_spec ("%:compare-debug-self-opt()");
6729 save_temps_flag
= save
;
6731 if (!compare_debug_second
)
6733 n_switches_debug_check
[1] = n_switches
;
6734 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
6735 switches_debug_check
[1] = switches
;
6736 compare_debug
= -compare_debug
;
6737 n_switches
= n_switches_debug_check
[0];
6738 n_switches_alloc
= n_switches_debug_check
[0];
6739 switches
= switches_debug_check
[0];
6744 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6745 if (gcc_exec_prefix
)
6746 gcc_exec_prefix
= concat (gcc_exec_prefix
, spec_machine
, dir_separator_str
,
6747 spec_version
, dir_separator_str
, NULL
);
6749 /* Now we have the specs.
6750 Set the `valid' bits for switches that match anything in any spec. */
6752 validate_all_switches ();
6754 /* Now that we have the switches and the specs, set
6755 the subdirectory based on the options. */
6756 set_multilib_dir ();
6758 /* Set up to remember the pathname of gcc and any options
6759 needed for collect. We use argv[0] instead of progname because
6760 we need the complete pathname. */
6761 obstack_init (&collect_obstack
);
6762 obstack_grow (&collect_obstack
, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6763 obstack_grow (&collect_obstack
, argv
[0], strlen (argv
[0]) + 1);
6764 xputenv (XOBFINISH (&collect_obstack
, char *));
6766 /* Set up to remember the pathname of the lto wrapper. */
6769 lto_wrapper_file
= NULL
;
6771 lto_wrapper_file
= find_a_file (&exec_prefixes
, "lto-wrapper",
6773 if (lto_wrapper_file
)
6775 lto_wrapper_file
= convert_white_space (lto_wrapper_file
);
6776 lto_wrapper_spec
= lto_wrapper_file
;
6777 obstack_init (&collect_obstack
);
6778 obstack_grow (&collect_obstack
, "COLLECT_LTO_WRAPPER=",
6779 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
6780 obstack_grow (&collect_obstack
, lto_wrapper_spec
,
6781 strlen (lto_wrapper_spec
) + 1);
6782 xputenv (XOBFINISH (&collect_obstack
, char *));
6785 /* Reject switches that no pass was interested in. */
6787 for (i
= 0; (int) i
< n_switches
; i
++)
6788 if (! switches
[i
].validated
)
6789 error ("unrecognized command line option %<-%s%>", switches
[i
].part1
);
6791 /* Obey some of the options. */
6793 if (print_search_dirs
)
6795 printf (_("install: %s%s\n"),
6796 gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
6797 gcc_exec_prefix
? "" : machine_suffix
);
6798 printf (_("programs: %s\n"),
6799 build_search_list (&exec_prefixes
, "", false, false));
6800 printf (_("libraries: %s\n"),
6801 build_search_list (&startfile_prefixes
, "", false, true));
6805 if (print_file_name
)
6807 printf ("%s\n", find_file (print_file_name
));
6811 if (print_prog_name
)
6813 if (use_ld
!= NULL
&& ! strcmp (print_prog_name
, "ld"))
6815 /* Append USE_LD to to the default linker. */
6816 #ifdef DEFAULT_LINKER
6818 # ifdef HAVE_HOST_EXECUTABLE_SUFFIX
6819 int len
= (sizeof (DEFAULT_LINKER
)
6820 - sizeof (HOST_EXECUTABLE_SUFFIX
));
6824 char *default_linker
= xstrdup (DEFAULT_LINKER
);
6825 /* Strip HOST_EXECUTABLE_SUFFIX if DEFAULT_LINKER contains
6826 HOST_EXECUTABLE_SUFFIX. */
6827 if (! strcmp (&default_linker
[len
], HOST_EXECUTABLE_SUFFIX
))
6829 default_linker
[len
] = '\0';
6830 ld
= concat (default_linker
, use_ld
,
6831 HOST_EXECUTABLE_SUFFIX
, NULL
);
6836 ld
= concat (DEFAULT_LINKER
, use_ld
, NULL
);
6837 if (access (ld
, X_OK
) == 0)
6839 printf ("%s\n", ld
);
6843 print_prog_name
= concat (print_prog_name
, use_ld
, NULL
);
6845 char *newname
= find_a_file (&exec_prefixes
, print_prog_name
, X_OK
, 0);
6846 printf ("%s\n", (newname
? newname
: print_prog_name
));
6850 if (print_multi_lib
)
6852 print_multilib_info ();
6856 if (print_multi_directory
)
6858 if (multilib_dir
== NULL
)
6861 printf ("%s\n", multilib_dir
);
6865 if (print_multiarch
)
6867 if (multiarch_dir
== NULL
)
6870 printf ("%s\n", multiarch_dir
);
6876 if (target_system_root
)
6878 if (target_sysroot_suffix
)
6879 printf ("%s%s\n", target_system_root
, target_sysroot_suffix
);
6881 printf ("%s\n", target_system_root
);
6886 if (print_multi_os_directory
)
6888 if (multilib_os_dir
== NULL
)
6891 printf ("%s\n", multilib_os_dir
);
6895 if (print_sysroot_headers_suffix
)
6897 if (*sysroot_hdrs_suffix_spec
)
6899 printf("%s\n", (target_sysroot_hdrs_suffix
6900 ? target_sysroot_hdrs_suffix
6905 /* The error status indicates that only one set of fixed
6906 headers should be built. */
6907 fatal_error ("not configured with sysroot headers suffix");
6910 if (print_help_list
)
6916 printf (_("\nFor bug reporting instructions, please see:\n"));
6917 printf ("%s.\n", bug_report_url
);
6922 /* We do not exit here. Instead we have created a fake input file
6923 called 'help-dummy' which needs to be compiled, and we pass this
6924 on the various sub-processes, along with the --help switch.
6925 Ensure their output appears after ours. */
6926 fputc ('\n', stdout
);
6932 printf (_("%s %s%s\n"), progname
, pkgversion_string
,
6934 printf ("Copyright %s 2014 Free Software Foundation, Inc.\n",
6936 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
6937 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
6942 /* We do not exit here. We use the same mechanism of --help to print
6943 the version of the sub-processes. */
6944 fputc ('\n', stdout
);
6953 fnotice (stderr
, "Target: %s\n", spec_machine
);
6954 fnotice (stderr
, "Configured with: %s\n", configuration_arguments
);
6956 #ifdef THREAD_MODEL_SPEC
6957 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6958 but there's no point in doing all this processing just to get
6959 thread_model back. */
6960 obstack_init (&obstack
);
6961 do_spec_1 (THREAD_MODEL_SPEC
, 0, thread_model
);
6962 obstack_1grow (&obstack
, '\0');
6963 thrmod
= XOBFINISH (&obstack
, const char *);
6965 thrmod
= thread_model
;
6968 fnotice (stderr
, "Thread model: %s\n", thrmod
);
6970 /* compiler_version is truncated at the first space when initialized
6971 from version string, so truncate version_string at the first space
6972 before comparing. */
6973 for (n
= 0; version_string
[n
]; n
++)
6974 if (version_string
[n
] == ' ')
6977 if (! strncmp (version_string
, compiler_version
, n
)
6978 && compiler_version
[n
] == 0)
6979 fnotice (stderr
, "gcc version %s %s\n", version_string
,
6982 fnotice (stderr
, "gcc driver version %s %sexecuting gcc version %s\n",
6983 version_string
, pkgversion_string
, compiler_version
);
6989 if (n_infiles
== added_libraries
)
6990 fatal_error ("no input files");
6995 /* Make a place to record the compiler output file names
6996 that correspond to the input files. */
6999 i
+= lang_specific_extra_outfiles
;
7000 outfiles
= XCNEWVEC (const char *, i
);
7002 /* Record which files were specified explicitly as link input. */
7004 explicit_link_files
= XCNEWVEC (char, n_infiles
);
7006 combine_inputs
= have_o
|| flag_wpa
;
7008 for (i
= 0; (int) i
< n_infiles
; i
++)
7010 const char *name
= infiles
[i
].name
;
7011 struct compiler
*compiler
= lookup_compiler (name
,
7013 infiles
[i
].language
);
7015 if (compiler
&& !(compiler
->combinable
))
7016 combine_inputs
= false;
7018 if (lang_n_infiles
> 0 && compiler
!= input_file_compiler
7019 && infiles
[i
].language
&& infiles
[i
].language
[0] != '*')
7020 infiles
[i
].incompiler
= compiler
;
7024 input_file_compiler
= compiler
;
7025 infiles
[i
].incompiler
= compiler
;
7029 /* Since there is no compiler for this input file, assume it is a
7031 explicit_link_files
[i
] = 1;
7032 infiles
[i
].incompiler
= NULL
;
7034 infiles
[i
].compiled
= false;
7035 infiles
[i
].preprocessed
= false;
7038 if (!combine_inputs
&& have_c
&& have_o
&& lang_n_infiles
> 1)
7039 fatal_error ("cannot specify -o with -c, -S or -E with multiple files");
7041 for (i
= 0; (int) i
< n_infiles
; i
++)
7043 int this_file_error
= 0;
7045 /* Tell do_spec what to substitute for %i. */
7047 input_file_number
= i
;
7048 set_input (infiles
[i
].name
);
7050 if (infiles
[i
].compiled
)
7053 /* Use the same thing in %o, unless cp->spec says otherwise. */
7055 outfiles
[i
] = gcc_input_filename
;
7057 /* Figure out which compiler from the file's suffix. */
7060 = lookup_compiler (infiles
[i
].name
, input_filename_length
,
7061 infiles
[i
].language
);
7063 if (input_file_compiler
)
7065 /* Ok, we found an applicable compiler. Run its spec. */
7067 if (input_file_compiler
->spec
[0] == '#')
7069 error ("%s: %s compiler not installed on this system",
7070 gcc_input_filename
, &input_file_compiler
->spec
[1]);
7071 this_file_error
= 1;
7077 free (debug_check_temp_file
[0]);
7078 debug_check_temp_file
[0] = NULL
;
7080 free (debug_check_temp_file
[1]);
7081 debug_check_temp_file
[1] = NULL
;
7084 value
= do_spec (input_file_compiler
->spec
);
7085 infiles
[i
].compiled
= true;
7087 this_file_error
= 1;
7088 else if (compare_debug
&& debug_check_temp_file
[0])
7091 inform (0, "recompiling with -fcompare-debug");
7093 compare_debug
= -compare_debug
;
7094 n_switches
= n_switches_debug_check
[1];
7095 n_switches_alloc
= n_switches_alloc_debug_check
[1];
7096 switches
= switches_debug_check
[1];
7098 value
= do_spec (input_file_compiler
->spec
);
7100 compare_debug
= -compare_debug
;
7101 n_switches
= n_switches_debug_check
[0];
7102 n_switches_alloc
= n_switches_alloc_debug_check
[0];
7103 switches
= switches_debug_check
[0];
7107 error ("during -fcompare-debug recompilation");
7108 this_file_error
= 1;
7111 gcc_assert (debug_check_temp_file
[1]
7112 && filename_cmp (debug_check_temp_file
[0],
7113 debug_check_temp_file
[1]));
7116 inform (0, "comparing final insns dumps");
7118 if (compare_files (debug_check_temp_file
))
7119 this_file_error
= 1;
7124 free (debug_check_temp_file
[0]);
7125 debug_check_temp_file
[0] = NULL
;
7127 free (debug_check_temp_file
[1]);
7128 debug_check_temp_file
[1] = NULL
;
7133 /* If this file's name does not contain a recognized suffix,
7134 record it as explicit linker input. */
7137 explicit_link_files
[i
] = 1;
7139 /* Clear the delete-on-failure queue, deleting the files in it
7140 if this compilation failed. */
7142 if (this_file_error
)
7144 delete_failure_queue ();
7147 /* If this compilation succeeded, don't delete those files later. */
7148 clear_failure_queue ();
7151 /* Reset the input file name to the first compile/object file name, for use
7152 with %b in LINK_SPEC. We use the first input file that we can find
7153 a compiler to compile it instead of using infiles.language since for
7154 languages other than C we use aliases that we then lookup later. */
7159 for (i
= 0; i
< n_infiles
; i
++)
7160 if (infiles
[i
].incompiler
7161 || (infiles
[i
].language
&& infiles
[i
].language
[0] != '*'))
7163 set_input (infiles
[i
].name
);
7170 /* Make sure INPUT_FILE_NUMBER points to first available open
7172 input_file_number
= n_infiles
;
7173 if (lang_specific_pre_link ())
7177 /* Determine if there are any linker input files. */
7178 num_linker_inputs
= 0;
7179 for (i
= 0; (int) i
< n_infiles
; i
++)
7180 if (explicit_link_files
[i
] || outfiles
[i
] != NULL
)
7181 num_linker_inputs
++;
7183 /* Run ld to link all the compiler output files. */
7185 if (num_linker_inputs
> 0 && !seen_error () && print_subprocess_help
< 2)
7187 int tmp
= execution_count
;
7191 #if HAVE_LTO_PLUGIN > 0
7192 #if HAVE_LTO_PLUGIN == 2
7193 const char *fno_use_linker_plugin
= "fno-use-linker-plugin";
7195 const char *fuse_linker_plugin
= "fuse-linker-plugin";
7199 /* We'll use ld if we can't find collect2. */
7200 if (! strcmp (linker_name_spec
, "collect2"))
7202 char *s
= find_a_file (&exec_prefixes
, "collect2", X_OK
, false);
7204 linker_name_spec
= "ld";
7207 #if HAVE_LTO_PLUGIN > 0
7208 #if HAVE_LTO_PLUGIN == 2
7209 if (!switch_matches (fno_use_linker_plugin
,
7210 fno_use_linker_plugin
7211 + strlen (fno_use_linker_plugin
), 0))
7213 if (switch_matches (fuse_linker_plugin
,
7215 + strlen (fuse_linker_plugin
), 0))
7218 char *temp_spec
= find_a_file (&exec_prefixes
,
7219 LTOPLUGINSONAME
, R_OK
,
7222 fatal_error ("-fuse-linker-plugin, but %s not found",
7224 linker_plugin_file_spec
= convert_white_space (temp_spec
);
7227 lto_gcc_spec
= argv
[0];
7230 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
7232 putenv_from_prefixes (&exec_prefixes
, "COMPILER_PATH", false);
7233 putenv_from_prefixes (&startfile_prefixes
, LIBRARY_PATH_ENV
, true);
7235 if (print_subprocess_help
== 1)
7237 printf (_("\nLinker options\n==============\n\n"));
7238 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
7239 " to the linker.\n\n"));
7242 value
= do_spec (link_command_spec
);
7245 linker_was_run
= (tmp
!= execution_count
);
7248 /* If options said don't run linker,
7249 complain about input files to be given to the linker. */
7251 if (! linker_was_run
&& !seen_error ())
7252 for (i
= 0; (int) i
< n_infiles
; i
++)
7253 if (explicit_link_files
[i
]
7254 && !(infiles
[i
].language
&& infiles
[i
].language
[0] == '*'))
7255 warning (0, "%s: linker input file unused because linking not done",
7258 /* Delete some or all of the temporary files we made. */
7261 delete_failure_queue ();
7262 delete_temp_files ();
7264 if (print_help_list
)
7266 printf (("\nFor bug reporting instructions, please see:\n"));
7267 printf ("%s\n", bug_report_url
);
7271 return (signal_count
!= 0 ? 2
7272 : seen_error () ? (pass_exit_codes
? greatest_status
: 1)
7276 /* Find the proper compilation spec for the file name NAME,
7277 whose length is LENGTH. LANGUAGE is the specified language,
7278 or 0 if this file is to be passed to the linker. */
7280 static struct compiler
*
7281 lookup_compiler (const char *name
, size_t length
, const char *language
)
7283 struct compiler
*cp
;
7285 /* If this was specified by the user to be a linker input, indicate that. */
7286 if (language
!= 0 && language
[0] == '*')
7289 /* Otherwise, look for the language, if one is spec'd. */
7292 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7293 if (cp
->suffix
[0] == '@' && !strcmp (cp
->suffix
+ 1, language
))
7296 error ("language %s not recognized", language
);
7300 /* Look for a suffix. */
7301 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7303 if (/* The suffix `-' matches only the file name `-'. */
7304 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
7305 || (strlen (cp
->suffix
) < length
7306 /* See if the suffix matches the end of NAME. */
7307 && !strcmp (cp
->suffix
,
7308 name
+ length
- strlen (cp
->suffix
))
7313 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
7314 /* Look again, but case-insensitively this time. */
7316 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7318 if (/* The suffix `-' matches only the file name `-'. */
7319 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
7320 || (strlen (cp
->suffix
) < length
7321 /* See if the suffix matches the end of NAME. */
7322 && ((!strcmp (cp
->suffix
,
7323 name
+ length
- strlen (cp
->suffix
))
7324 || !strpbrk (cp
->suffix
, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
7325 && !strcasecmp (cp
->suffix
,
7326 name
+ length
- strlen (cp
->suffix
)))
7332 if (cp
>= compilers
)
7334 if (cp
->spec
[0] != '@')
7335 /* A non-alias entry: return it. */
7338 /* An alias entry maps a suffix to a language.
7339 Search for the language; pass 0 for NAME and LENGTH
7340 to avoid infinite recursion if language not found. */
7341 return lookup_compiler (NULL
, 0, cp
->spec
+ 1);
7347 save_string (const char *s
, int len
)
7349 char *result
= XNEWVEC (char, len
+ 1);
7351 memcpy (result
, s
, len
);
7357 pfatal_with_name (const char *name
)
7359 perror_with_name (name
);
7360 delete_temp_files ();
7365 perror_with_name (const char *name
)
7367 error ("%s: %m", name
);
7371 validate_switches_from_spec (const char *spec
, bool user
)
7373 const char *p
= spec
;
7376 if (c
== '%' && (*p
== '{' || *p
== '<' || (*p
== 'W' && *++p
== '{')))
7377 /* We have a switch spec. */
7378 p
= validate_switches (p
+ 1, user
);
7382 validate_all_switches (void)
7384 struct compiler
*comp
;
7385 struct spec_list
*spec
;
7387 for (comp
= compilers
; comp
->spec
; comp
++)
7388 validate_switches_from_spec (comp
->spec
, false);
7390 /* Look through the linked list of specs read from the specs file. */
7391 for (spec
= specs
; spec
; spec
= spec
->next
)
7392 validate_switches_from_spec (*spec
->ptr_spec
, spec
->user_p
);
7394 validate_switches_from_spec (link_command_spec
, false);
7397 /* Look at the switch-name that comes after START
7398 and mark as valid all supplied switches that match it. */
7401 validate_switches (const char *start
, bool user_spec
)
7403 const char *p
= start
;
7407 bool suffix
= false;
7408 bool starred
= false;
7410 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7419 if (*p
== '.' || *p
== ',')
7423 while (ISIDNUM (*p
) || *p
== '-' || *p
== '+' || *p
== '='
7424 || *p
== ',' || *p
== '.' || *p
== '@')
7429 starred
= true, p
++;
7435 /* Mark all matching switches as valid. */
7436 for (i
= 0; i
< n_switches
; i
++)
7437 if (!strncmp (switches
[i
].part1
, atom
, len
)
7438 && (starred
|| switches
[i
].part1
[len
] == '\0')
7439 && (switches
[i
].known
|| user_spec
))
7440 switches
[i
].validated
= true;
7444 if (*p
&& (p
[-1] == '|' || p
[-1] == '&'))
7447 if (*p
&& p
[-1] == ':')
7449 while (*p
&& *p
!= ';' && *p
!= '}')
7454 if (*p
== '{' || *p
== '<')
7455 p
= validate_switches (p
+1, user_spec
);
7456 else if (p
[0] == 'W' && p
[1] == '{')
7457 p
= validate_switches (p
+2, user_spec
);
7464 if (*p
&& p
[-1] == ';')
7478 static struct mdswitchstr
*mdswitches
;
7479 static int n_mdswitches
;
7481 /* Check whether a particular argument was used. The first time we
7482 canonicalize the switches to keep only the ones we care about. */
7485 used_arg (const char *p
, int len
)
7490 const char *replace
;
7495 static struct mswitchstr
*mswitches
;
7496 static int n_mswitches
;
7501 struct mswitchstr
*matches
;
7505 /* Break multilib_matches into the component strings of string
7506 and replacement string. */
7507 for (q
= multilib_matches
; *q
!= '\0'; q
++)
7512 = (struct mswitchstr
*) alloca ((sizeof (struct mswitchstr
)) * cnt
);
7514 q
= multilib_matches
;
7523 fatal_error ("multilib spec %qs is invalid",
7528 matches
[i
].len
= q
- matches
[i
].str
;
7530 matches
[i
].replace
= ++q
;
7531 while (*q
!= ';' && *q
!= '\0')
7534 goto invalid_matches
;
7537 matches
[i
].rep_len
= q
- matches
[i
].replace
;
7543 /* Now build a list of the replacement string for switches that we care
7544 about. Make sure we allocate at least one entry. This prevents
7545 xmalloc from calling fatal, and prevents us from re-executing this
7548 = XNEWVEC (struct mswitchstr
, n_mdswitches
+ (n_switches
? n_switches
: 1));
7549 for (i
= 0; i
< n_switches
; i
++)
7550 if ((switches
[i
].live_cond
& SWITCH_IGNORE
) == 0)
7552 int xlen
= strlen (switches
[i
].part1
);
7553 for (j
= 0; j
< cnt
; j
++)
7554 if (xlen
== matches
[j
].len
7555 && ! strncmp (switches
[i
].part1
, matches
[j
].str
, xlen
))
7557 mswitches
[n_mswitches
].str
= matches
[j
].replace
;
7558 mswitches
[n_mswitches
].len
= matches
[j
].rep_len
;
7559 mswitches
[n_mswitches
].replace
= (char *) 0;
7560 mswitches
[n_mswitches
].rep_len
= 0;
7566 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7567 on the command line nor any options mutually incompatible with
7569 for (i
= 0; i
< n_mdswitches
; i
++)
7573 for (q
= multilib_options
; *q
!= '\0'; *q
&& q
++)
7579 while (strncmp (q
, mdswitches
[i
].str
, mdswitches
[i
].len
) != 0
7580 || strchr (" /", q
[mdswitches
[i
].len
]) == NULL
)
7582 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
7589 if (*q
!= ' ' && *q
!= '\0')
7591 while (*r
!= ' ' && *r
!= '\0')
7594 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
7597 if (used_arg (r
, q
- r
))
7602 mswitches
[n_mswitches
].str
= mdswitches
[i
].str
;
7603 mswitches
[n_mswitches
].len
= mdswitches
[i
].len
;
7604 mswitches
[n_mswitches
].replace
= (char *) 0;
7605 mswitches
[n_mswitches
].rep_len
= 0;
7618 for (i
= 0; i
< n_mswitches
; i
++)
7619 if (len
== mswitches
[i
].len
&& ! strncmp (p
, mswitches
[i
].str
, len
))
7626 default_arg (const char *p
, int len
)
7630 for (i
= 0; i
< n_mdswitches
; i
++)
7631 if (len
== mdswitches
[i
].len
&& ! strncmp (p
, mdswitches
[i
].str
, len
))
7637 /* Work out the subdirectory to use based on the options. The format of
7638 multilib_select is a list of elements. Each element is a subdirectory
7639 name followed by a list of options followed by a semicolon. The format
7640 of multilib_exclusions is the same, but without the preceding
7641 directory. First gcc will check the exclusions, if none of the options
7642 beginning with an exclamation point are present, and all of the other
7643 options are present, then we will ignore this completely. Passing
7644 that, gcc will consider each multilib_select in turn using the same
7645 rules for matching the options. If a match is found, that subdirectory
7647 A subdirectory name is optionally followed by a colon and the corresponding
7651 set_multilib_dir (void)
7654 unsigned int this_path_len
;
7655 const char *this_path
, *this_arg
;
7656 const char *start
, *end
;
7658 int ok
, ndfltok
, first
;
7661 start
= multilib_defaults
;
7662 while (*start
== ' ' || *start
== '\t')
7664 while (*start
!= '\0')
7667 while (*start
!= ' ' && *start
!= '\t' && *start
!= '\0')
7669 while (*start
== ' ' || *start
== '\t')
7677 mdswitches
= XNEWVEC (struct mdswitchstr
, n_mdswitches
);
7678 for (start
= multilib_defaults
; *start
!= '\0'; start
= end
+ 1)
7680 while (*start
== ' ' || *start
== '\t')
7686 for (end
= start
+ 1;
7687 *end
!= ' ' && *end
!= '\t' && *end
!= '\0'; end
++)
7690 obstack_grow (&multilib_obstack
, start
, end
- start
);
7691 obstack_1grow (&multilib_obstack
, 0);
7692 mdswitches
[i
].str
= XOBFINISH (&multilib_obstack
, const char *);
7693 mdswitches
[i
++].len
= end
- start
;
7700 p
= multilib_exclusions
;
7703 /* Ignore newlines. */
7710 /* Check the arguments. */
7717 fatal_error ("multilib exclusions %qs is invalid",
7718 multilib_exclusions
);
7728 while (*p
!= ' ' && *p
!= ';')
7731 goto invalid_exclusions
;
7735 if (*this_arg
!= '!')
7743 ok
= used_arg (this_arg
, p
- this_arg
);
7758 p
= multilib_select
;
7760 /* Append multilib reuse rules if any. With those rules, we can reuse
7761 one multilib for certain different options sets. */
7762 if (strlen (multilib_reuse
) > 0)
7763 p
= concat (p
, multilib_reuse
, NULL
);
7767 /* Ignore newlines. */
7774 /* Get the initial path. */
7781 fatal_error ("multilib select %qs %qs is invalid",
7782 multilib_select
, multilib_reuse
);
7786 this_path_len
= p
- this_path
;
7788 /* Check the arguments. */
7795 goto invalid_select
;
7804 while (*p
!= ' ' && *p
!= ';')
7807 goto invalid_select
;
7811 if (*this_arg
!= '!')
7819 /* If this is a default argument, we can just ignore it.
7820 This is true even if this_arg begins with '!'. Beginning
7821 with '!' does not mean that this argument is necessarily
7822 inappropriate for this library: it merely means that
7823 there is a more specific library which uses this
7824 argument. If this argument is a default, we need not
7825 consider that more specific library. */
7826 ok
= used_arg (this_arg
, p
- this_arg
);
7833 if (default_arg (this_arg
, p
- this_arg
))
7842 if (this_path_len
!= 1
7843 || this_path
[0] != '.')
7845 char *new_multilib_dir
= XNEWVEC (char, this_path_len
+ 1);
7848 strncpy (new_multilib_dir
, this_path
, this_path_len
);
7849 new_multilib_dir
[this_path_len
] = '\0';
7850 q
= strchr (new_multilib_dir
, ':');
7853 multilib_dir
= new_multilib_dir
;
7860 const char *q
= this_path
, *end
= this_path
+ this_path_len
;
7862 while (q
< end
&& *q
!= ':')
7866 const char *q2
= q
+ 1, *ml_end
= end
;
7867 char *new_multilib_os_dir
;
7869 while (q2
< end
&& *q2
!= ':')
7873 if (ml_end
- q
== 1)
7874 multilib_os_dir
= xstrdup (".");
7877 new_multilib_os_dir
= XNEWVEC (char, ml_end
- q
);
7878 memcpy (new_multilib_os_dir
, q
+ 1, ml_end
- q
- 1);
7879 new_multilib_os_dir
[ml_end
- q
- 1] = '\0';
7880 multilib_os_dir
= new_multilib_os_dir
;
7883 if (q2
< end
&& *q2
== ':')
7885 char *new_multiarch_dir
= XNEWVEC (char, end
- q2
);
7886 memcpy (new_multiarch_dir
, q2
+ 1, end
- q2
- 1);
7887 new_multiarch_dir
[end
- q2
- 1] = '\0';
7888 multiarch_dir
= new_multiarch_dir
;
7897 if (multilib_dir
== NULL
&& multilib_os_dir
!= NULL
7898 && strcmp (multilib_os_dir
, ".") == 0)
7900 free (CONST_CAST (char *, multilib_os_dir
));
7901 multilib_os_dir
= NULL
;
7903 else if (multilib_dir
!= NULL
&& multilib_os_dir
== NULL
)
7904 multilib_os_dir
= multilib_dir
;
7907 /* Print out the multiple library subdirectory selection
7908 information. This prints out a series of lines. Each line looks
7909 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7910 required. Only the desired options are printed out, the negative
7911 matches. The options are print without a leading dash. There are
7912 no spaces to make it easy to use the information in the shell.
7913 Each subdirectory is printed only once. This assumes the ordering
7914 generated by the genmultilib script. Also, we leave out ones that match
7918 print_multilib_info (void)
7920 const char *p
= multilib_select
;
7921 const char *last_path
= 0, *this_path
;
7923 unsigned int last_path_len
= 0;
7928 /* Ignore newlines. */
7935 /* Get the initial path. */
7942 fatal_error ("multilib select %qs is invalid", multilib_select
);
7948 /* When --disable-multilib was used but target defines
7949 MULTILIB_OSDIRNAMES, entries starting with .: (and not starting
7950 with .:: for multiarch configurations) are there just to find
7951 multilib_os_dir, so skip them from output. */
7952 if (this_path
[0] == '.' && this_path
[1] == ':' && this_path
[2] != ':')
7955 /* Check for matches with the multilib_exclusions. We don't bother
7956 with the '!' in either list. If any of the exclusion rules match
7957 all of its options with the select rule, we skip it. */
7959 const char *e
= multilib_exclusions
;
7960 const char *this_arg
;
7965 /* Ignore newlines. */
7972 /* Check the arguments. */
7981 fatal_error ("multilib exclusion %qs is invalid",
7982 multilib_exclusions
);
7993 while (*e
!= ' ' && *e
!= ';')
7996 goto invalid_exclusion
;
8004 int len
= e
- this_arg
;
8007 goto invalid_select
;
8011 while (*q
!= ' ' && *q
!= ';')
8014 goto invalid_select
;
8018 if (! strncmp (arg
, this_arg
,
8019 (len
< q
- arg
) ? q
- arg
: len
)
8020 || default_arg (this_arg
, e
- this_arg
))
8050 /* If this is a duplicate, skip it. */
8051 skip
= (last_path
!= 0
8052 && (unsigned int) (p
- this_path
) == last_path_len
8053 && ! filename_ncmp (last_path
, this_path
, last_path_len
));
8055 last_path
= this_path
;
8056 last_path_len
= p
- this_path
;
8059 /* If this directory requires any default arguments, we can skip
8060 it. We will already have printed a directory identical to
8061 this one which does not require that default argument. */
8072 goto invalid_select
;
8079 while (*q
!= ' ' && *q
!= ';')
8082 goto invalid_select
;
8087 && default_arg (arg
, q
- arg
))
8102 for (p1
= last_path
; p1
< p
&& *p1
!= ':'; p1
++)
8113 goto invalid_select
;
8121 use_arg
= *p
!= '!';
8126 while (*p
!= ' ' && *p
!= ';')
8129 goto invalid_select
;
8141 /* If there are extra options, print them now. */
8142 if (multilib_extra
&& *multilib_extra
)
8144 int print_at
= TRUE
;
8147 for (q
= multilib_extra
; *q
!= '\0'; q
++)
8168 /* getenv built-in spec function.
8170 Returns the value of the environment variable given by its first
8171 argument, concatenated with the second argument. If the
8172 environment variable is not defined, a fatal error is issued. */
8175 getenv_spec_function (int argc
, const char **argv
)
8185 value
= getenv (argv
[0]);
8187 fatal_error ("environment variable %qs not defined", argv
[0]);
8189 /* We have to escape every character of the environment variable so
8190 they are not interpreted as active spec characters. A
8191 particularly painful case is when we are reading a variable
8192 holding a windows path complete with \ separators. */
8193 len
= strlen (value
) * 2 + strlen (argv
[1]) + 1;
8194 result
= XNEWVAR (char, len
);
8195 for (ptr
= result
; *value
; ptr
+= 2)
8201 strcpy (ptr
, argv
[1]);
8206 /* if-exists built-in spec function.
8208 Checks to see if the file specified by the absolute pathname in
8209 ARGS exists. Returns that pathname if found.
8211 The usual use for this function is to check for a library file
8212 (whose name has been expanded with %s). */
8215 if_exists_spec_function (int argc
, const char **argv
)
8217 /* Must have only one argument. */
8218 if (argc
== 1 && IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
8224 /* if-exists-else built-in spec function.
8226 This is like if-exists, but takes an additional argument which
8227 is returned if the first argument does not exist. */
8230 if_exists_else_spec_function (int argc
, const char **argv
)
8232 /* Must have exactly two arguments. */
8236 if (IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
8242 /* sanitize built-in spec function.
8244 This returns non-NULL, if sanitizing address, thread or
8245 any of the undefined behavior sanitizers. */
8248 sanitize_spec_function (int argc
, const char **argv
)
8253 if (strcmp (argv
[0], "address") == 0)
8254 return (flag_sanitize
& SANITIZE_USER_ADDRESS
) ? "" : NULL
;
8255 if (strcmp (argv
[0], "kernel-address") == 0)
8256 return (flag_sanitize
& SANITIZE_KERNEL_ADDRESS
) ? "" : NULL
;
8257 if (strcmp (argv
[0], "thread") == 0)
8258 return (flag_sanitize
& SANITIZE_THREAD
) ? "" : NULL
;
8259 if (strcmp (argv
[0], "undefined") == 0)
8260 return ((flag_sanitize
& (SANITIZE_UNDEFINED
| SANITIZE_NONDEFAULT
))
8261 && !flag_sanitize_undefined_trap_on_error
) ? "" : NULL
;
8262 if (strcmp (argv
[0], "leak") == 0)
8263 return ((flag_sanitize
8264 & (SANITIZE_ADDRESS
| SANITIZE_LEAK
| SANITIZE_THREAD
))
8265 == SANITIZE_LEAK
) ? "" : NULL
;
8269 /* replace-outfile built-in spec function.
8271 This looks for the first argument in the outfiles array's name and
8272 replaces it with the second argument. */
8275 replace_outfile_spec_function (int argc
, const char **argv
)
8278 /* Must have exactly two arguments. */
8282 for (i
= 0; i
< n_infiles
; i
++)
8284 if (outfiles
[i
] && !filename_cmp (outfiles
[i
], argv
[0]))
8285 outfiles
[i
] = xstrdup (argv
[1]);
8290 /* remove-outfile built-in spec function.
8292 * This looks for the first argument in the outfiles array's name and
8296 remove_outfile_spec_function (int argc
, const char **argv
)
8299 /* Must have exactly one argument. */
8303 for (i
= 0; i
< n_infiles
; i
++)
8305 if (outfiles
[i
] && !filename_cmp (outfiles
[i
], argv
[0]))
8311 /* Given two version numbers, compares the two numbers.
8312 A version number must match the regular expression
8313 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
8316 compare_version_strings (const char *v1
, const char *v2
)
8321 if (regcomp (&r
, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
8322 REG_EXTENDED
| REG_NOSUB
) != 0)
8324 rresult
= regexec (&r
, v1
, 0, NULL
, 0);
8325 if (rresult
== REG_NOMATCH
)
8326 fatal_error ("invalid version number %qs", v1
);
8327 else if (rresult
!= 0)
8329 rresult
= regexec (&r
, v2
, 0, NULL
, 0);
8330 if (rresult
== REG_NOMATCH
)
8331 fatal_error ("invalid version number %qs", v2
);
8332 else if (rresult
!= 0)
8335 return strverscmp (v1
, v2
);
8339 /* version_compare built-in spec function.
8341 This takes an argument of the following form:
8343 <comparison-op> <arg1> [<arg2>] <switch> <result>
8345 and produces "result" if the comparison evaluates to true,
8346 and nothing if it doesn't.
8348 The supported <comparison-op> values are:
8350 >= true if switch is a later (or same) version than arg1
8352 < true if switch is an earlier version than arg1
8354 >< true if switch is arg1 or later, and earlier than arg2
8355 <> true if switch is earlier than arg1 or is arg2 or later
8357 If the switch is not present, the condition is false unless
8358 the first character of the <comparison-op> is '!'.
8361 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
8362 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
8365 version_compare_spec_function (int argc
, const char **argv
)
8369 const char *switch_value
= NULL
;
8374 fatal_error ("too few arguments to %%:version-compare");
8375 if (argv
[0][0] == '\0')
8377 if ((argv
[0][1] == '<' || argv
[0][1] == '>') && argv
[0][0] != '!')
8379 if (argc
!= nargs
+ 3)
8380 fatal_error ("too many arguments to %%:version-compare");
8382 switch_len
= strlen (argv
[nargs
+ 1]);
8383 for (i
= 0; i
< n_switches
; i
++)
8384 if (!strncmp (switches
[i
].part1
, argv
[nargs
+ 1], switch_len
)
8385 && check_live_switch (i
, switch_len
))
8386 switch_value
= switches
[i
].part1
+ switch_len
;
8388 if (switch_value
== NULL
)
8392 comp1
= compare_version_strings (switch_value
, argv
[1]);
8394 comp2
= compare_version_strings (switch_value
, argv
[2]);
8396 comp2
= -1; /* This value unused. */
8399 switch (argv
[0][0] << 8 | argv
[0][1])
8401 case '>' << 8 | '=':
8402 result
= comp1
>= 0;
8404 case '!' << 8 | '<':
8405 result
= comp1
>= 0 || switch_value
== NULL
;
8410 case '!' << 8 | '>':
8411 result
= comp1
< 0 || switch_value
== NULL
;
8413 case '>' << 8 | '<':
8414 result
= comp1
>= 0 && comp2
< 0;
8416 case '<' << 8 | '>':
8417 result
= comp1
< 0 || comp2
>= 0;
8421 fatal_error ("unknown operator %qs in %%:version-compare", argv
[0]);
8426 return argv
[nargs
+ 2];
8429 /* %:include builtin spec function. This differs from %include in that it
8430 can be nested inside a spec, and thus be conditionalized. It takes
8431 one argument, the filename, and looks for it in the startfile path.
8432 The result is always NULL, i.e. an empty expansion. */
8435 include_spec_function (int argc
, const char **argv
)
8442 file
= find_a_file (&startfile_prefixes
, argv
[0], R_OK
, true);
8443 read_specs (file
? file
: argv
[0], false, false);
8448 /* %:find-file spec function. This function replaces its argument by
8449 the file found through find_file, that is the -print-file-name gcc
8452 find_file_spec_function (int argc
, const char **argv
)
8459 file
= find_file (argv
[0]);
8464 /* %:find-plugindir spec function. This function replaces its argument
8465 by the -iplugindir=<dir> option. `dir' is found through find_file, that
8466 is the -print-file-name gcc program option. */
8468 find_plugindir_spec_function (int argc
, const char **argv ATTRIBUTE_UNUSED
)
8475 option
= concat ("-iplugindir=", find_file ("plugin"), NULL
);
8480 /* %:print-asm-header spec function. Print a banner to say that the
8481 following output is from the assembler. */
8484 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED
,
8485 const char **argv ATTRIBUTE_UNUSED
)
8487 printf (_("Assembler options\n=================\n\n"));
8488 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
8493 /* Get a random number for -frandom-seed */
8495 static unsigned HOST_WIDE_INT
8496 get_random_number (void)
8498 unsigned HOST_WIDE_INT ret
= 0;
8501 fd
= open ("/dev/urandom", O_RDONLY
);
8504 read (fd
, &ret
, sizeof (HOST_WIDE_INT
));
8510 /* Get some more or less random data. */
8511 #ifdef HAVE_GETTIMEOFDAY
8515 gettimeofday (&tv
, NULL
);
8516 ret
= tv
.tv_sec
* 1000 + tv
.tv_usec
/ 1000;
8520 time_t now
= time (NULL
);
8522 if (now
!= (time_t)-1)
8523 ret
= (unsigned) now
;
8527 return ret
^ getpid ();
8530 /* %:compare-debug-dump-opt spec function. Save the last argument,
8531 expected to be the last -fdump-final-insns option, or generate a
8535 compare_debug_dump_opt_spec_function (int arg
,
8536 const char **argv ATTRIBUTE_UNUSED
)
8541 static char random_seed
[HOST_BITS_PER_WIDE_INT
/ 4 + 3];
8544 fatal_error ("too many arguments to %%:compare-debug-dump-opt");
8546 do_spec_2 ("%{fdump-final-insns=*:%*}");
8547 do_spec_1 (" ", 0, NULL
);
8549 if (argbuf
.length () > 0
8550 && strcmp (argv
[argbuf
.length () - 1], "."))
8555 name
= xstrdup (argv
[argbuf
.length () - 1]);
8560 const char *ext
= NULL
;
8562 if (argbuf
.length () > 0)
8564 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
8567 else if (!compare_debug
)
8570 do_spec_2 ("%g.gkd");
8572 do_spec_1 (" ", 0, NULL
);
8574 gcc_assert (argbuf
.length () > 0);
8576 name
= concat (argbuf
.last (), ext
, NULL
);
8578 ret
= concat ("-fdump-final-insns=", name
, NULL
);
8581 which
= compare_debug
< 0;
8582 debug_check_temp_file
[which
] = name
;
8586 unsigned HOST_WIDE_INT value
= get_random_number ();
8588 sprintf (random_seed
, HOST_WIDE_INT_PRINT_HEX
, value
);
8594 ret
= concat ("%{!frandom-seed=*:-frandom-seed=", random_seed
, "} ",
8605 static const char *debug_auxbase_opt
;
8607 /* %:compare-debug-self-opt spec function. Expands to the options
8608 that are to be passed in the second compilation of
8612 compare_debug_self_opt_spec_function (int arg
,
8613 const char **argv ATTRIBUTE_UNUSED
)
8616 fatal_error ("too many arguments to %%:compare-debug-self-opt");
8618 if (compare_debug
>= 0)
8621 do_spec_2 ("%{c|S:%{o*:%*}}");
8622 do_spec_1 (" ", 0, NULL
);
8624 if (argbuf
.length () > 0)
8625 debug_auxbase_opt
= concat ("-auxbase-strip ",
8629 debug_auxbase_opt
= NULL
;
8632 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
8633 %<fdump-final-insns=* -w -S -o %j \
8634 %{!fcompare-debug-second:-fcompare-debug-second} \
8635 ", compare_debug_opt
, NULL
);
8638 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
8639 options that are to be passed in the second compilation of
8640 compare-debug. It expects, as an argument, the basename of the
8641 current input file name, with the .gk suffix appended to it. */
8644 compare_debug_auxbase_opt_spec_function (int arg
,
8651 fatal_error ("too few arguments to %%:compare-debug-auxbase-opt");
8654 fatal_error ("too many arguments to %%:compare-debug-auxbase-opt");
8656 if (compare_debug
>= 0)
8659 len
= strlen (argv
[0]);
8660 if (len
< 3 || strcmp (argv
[0] + len
- 3, ".gk") != 0)
8661 fatal_error ("argument to %%:compare-debug-auxbase-opt "
8662 "does not end in .gk");
8664 if (debug_auxbase_opt
)
8665 return debug_auxbase_opt
;
8667 #define OPT "-auxbase "
8670 name
= (char*) xmalloc (sizeof (OPT
) + len
);
8671 memcpy (name
, OPT
, sizeof (OPT
) - 1);
8672 memcpy (name
+ sizeof (OPT
) - 1, argv
[0], len
);
8673 name
[sizeof (OPT
) - 1 + len
] = '\0';
8680 /* %:pass-through-libs spec function. Finds all -l options and input
8681 file names in the lib spec passed to it, and makes a list of them
8682 prepended with the plugin option to cause them to be passed through
8683 to the final link after all the new object files have been added. */
8686 pass_through_libs_spec_func (int argc
, const char **argv
)
8688 char *prepended
= xstrdup (" ");
8690 /* Shlemiel the painter's algorithm. Innately horrible, but at least
8691 we know that there will never be more than a handful of strings to
8692 concat, and it's only once per run, so it's not worth optimising. */
8693 for (n
= 0; n
< argc
; n
++)
8695 char *old
= prepended
;
8696 /* Anything that isn't an option is a full path to an output
8697 file; pass it through if it ends in '.a'. Among options,
8699 if (argv
[n
][0] == '-' && argv
[n
][1] == 'l')
8701 const char *lopt
= argv
[n
] + 2;
8702 /* Handle both joined and non-joined -l options. If for any
8703 reason there's a trailing -l with no joined or following
8704 arg just discard it. */
8705 if (!*lopt
&& ++n
>= argc
)
8709 prepended
= concat (prepended
, "-plugin-opt=-pass-through=-l",
8712 else if (!strcmp (".a", argv
[n
] + strlen (argv
[n
]) - 2))
8714 prepended
= concat (prepended
, "-plugin-opt=-pass-through=",
8715 argv
[n
], " ", NULL
);
8717 if (prepended
!= old
)
8723 /* %:replace-extension spec function. Replaces the extension of the
8724 first argument with the second argument. */
8727 replace_extension_spec_func (int argc
, const char **argv
)
8735 fatal_error ("too few arguments to %%:replace-extension");
8737 name
= xstrdup (argv
[0]);
8739 for (i
= strlen (name
) - 1; i
>= 0; i
--)
8740 if (IS_DIR_SEPARATOR (name
[i
]))
8743 p
= strrchr (name
+ i
+ 1, '.');
8747 result
= concat (name
, argv
[1], NULL
);
8753 /* Insert backslash before spaces in ORIG (usually a file path), to
8754 avoid being broken by spec parser.
8756 This function is needed as do_spec_1 treats white space (' ' and '\t')
8757 as the end of an argument. But in case of -plugin /usr/gcc install/xxx.so,
8758 the file name should be treated as a single argument rather than being
8759 broken into multiple. Solution is to insert '\\' before the space in a
8762 This function converts and only converts all occurrence of ' '
8763 to '\\' + ' ' and '\t' to '\\' + '\t'. For example:
8767 "a\\ b" -> "a\\\\ b"
8769 orig: input null-terminating string that was allocated by xalloc. The
8770 memory it points to might be freed in this function. Behavior undefined
8771 if ORIG wasn't xalloced or was freed already at entry.
8773 Return: ORIG if no conversion needed. Otherwise a newly allocated string
8774 that was converted from ORIG. */
8777 convert_white_space (char *orig
)
8779 int len
, number_of_space
= 0;
8781 for (len
= 0; orig
[len
]; len
++)
8782 if (orig
[len
] == ' ' || orig
[len
] == '\t') number_of_space
++;
8784 if (number_of_space
)
8786 char *new_spec
= (char *) xmalloc (len
+ number_of_space
+ 1);
8788 for (j
= 0, k
= 0; j
<= len
; j
++, k
++)
8790 if (orig
[j
] == ' ' || orig
[j
] == '\t')
8791 new_spec
[k
++] = '\\';
8792 new_spec
[k
] = orig
[j
];