1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987-2015 Free Software Foundation, Inc.
4 This file is part of GCC.
6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 3, or (at your option) any later
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING3. If not see
18 <http://www.gnu.org/licenses/>. */
20 /* This program is the user interface to the C compiler and possibly to
21 other compilers. It is used because compilation is a complicated procedure
22 which involves running several programs and passing temporary files between
23 them, forwarding the users switches to those programs selectively,
24 and deleting the temporary files at the end.
26 CC recognizes how to compile each input file by suffixes in the file names.
27 Once it knows which kind of compilation to perform, the procedure for
28 compilation is specified by a string called a "spec". */
32 #include "coretypes.h"
33 #include "multilib.h" /* before tm.h */
40 #include "diagnostic.h"
44 #include "filenames.h"
46 /* By default there is no special suffix for target executables. */
47 /* FIXME: when autoconf is fixed, remove the host check - dj */
48 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
49 #define HAVE_TARGET_EXECUTABLE_SUFFIX
52 /* By default there is no special suffix for host executables. */
53 #ifdef HOST_EXECUTABLE_SUFFIX
54 #define HAVE_HOST_EXECUTABLE_SUFFIX
56 #define HOST_EXECUTABLE_SUFFIX ""
59 /* By default, the suffix for target object files is ".o". */
60 #ifdef TARGET_OBJECT_SUFFIX
61 #define HAVE_TARGET_OBJECT_SUFFIX
63 #define TARGET_OBJECT_SUFFIX ".o"
66 static const char dir_separator_str
[] = { DIR_SEPARATOR
, 0 };
68 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
69 #ifndef LIBRARY_PATH_ENV
70 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
73 /* If a stage of compilation returns an exit status >= 1,
74 compilation of that file ceases. */
76 #define MIN_FATAL_STATUS 1
78 /* Flag set by cppspec.c to 1. */
81 /* Flag set to nonzero if an @file argument has been supplied to gcc. */
82 static bool at_file_supplied
;
84 /* Definition of string containing the arguments given to configure. */
85 #include "configargs.h"
87 /* Flag saying to print the command line options understood by gcc and its
90 static int print_help_list
;
92 /* Flag saying to print the version of gcc and its sub-processes. */
94 static int print_version
;
96 /* Flag indicating whether we should ONLY print the command and
97 arguments (like verbose_flag) without executing the command.
98 Displayed arguments are quoted so that the generated command
99 line is suitable for execution. This is intended for use in
100 shell scripts to capture the driver-generated command line. */
101 static int verbose_only_flag
;
103 /* Flag indicating how to print command line options of sub-processes. */
105 static int print_subprocess_help
;
107 /* Linker suffix passed to -fuse-ld=... */
108 static const char *use_ld
;
110 /* Whether we should report subprocess execution times to a file. */
112 FILE *report_times_to_file
= NULL
;
114 /* Nonzero means place this string before uses of /, so that include
115 and library files can be found in an alternate location. */
117 #ifdef TARGET_SYSTEM_ROOT
118 static const char *target_system_root
= TARGET_SYSTEM_ROOT
;
120 static const char *target_system_root
= 0;
123 /* Nonzero means pass the updated target_system_root to the compiler. */
125 static int target_system_root_changed
;
127 /* Nonzero means append this string to target_system_root. */
129 static const char *target_sysroot_suffix
= 0;
131 /* Nonzero means append this string to target_system_root for headers. */
133 static const char *target_sysroot_hdrs_suffix
= 0;
135 /* Nonzero means write "temp" files in source directory
136 and use the source file's name in them, and don't delete them. */
138 static enum save_temps
{
139 SAVE_TEMPS_NONE
, /* no -save-temps */
140 SAVE_TEMPS_CWD
, /* -save-temps in current directory */
141 SAVE_TEMPS_OBJ
/* -save-temps in object directory */
144 /* Output file to use to get the object directory for -save-temps=obj */
145 static char *save_temps_prefix
= 0;
146 static size_t save_temps_length
= 0;
148 /* The compiler version. */
150 static const char *compiler_version
;
152 /* The target version. */
154 static const char *const spec_version
= DEFAULT_TARGET_VERSION
;
156 /* The target machine. */
158 static const char *spec_machine
= DEFAULT_TARGET_MACHINE
;
159 static const char *spec_host_machine
= DEFAULT_REAL_TARGET_MACHINE
;
161 /* List of offload targets. */
163 static char *offload_targets
= NULL
;
165 /* Nonzero if cross-compiling.
166 When -b is used, the value comes from the `specs' file. */
168 #ifdef CROSS_DIRECTORY_STRUCTURE
169 static const char *cross_compile
= "1";
171 static const char *cross_compile
= "0";
174 /* Greatest exit code of sub-processes that has been encountered up to
176 static int greatest_status
= 1;
178 /* This is the obstack which we use to allocate many strings. */
180 static struct obstack obstack
;
182 /* This is the obstack to build an environment variable to pass to
183 collect2 that describes all of the relevant switches of what to
184 pass the compiler in building the list of pointers to constructors
187 static struct obstack collect_obstack
;
189 /* Forward declaration for prototypes. */
193 static void init_spec (void);
194 static void store_arg (const char *, int, int);
195 static void insert_wrapper (const char *);
196 static char *load_specs (const char *);
197 static void read_specs (const char *, bool, bool);
198 static void set_spec (const char *, const char *, bool);
199 static struct compiler
*lookup_compiler (const char *, size_t, const char *);
200 static char *build_search_list (const struct path_prefix
*, const char *,
202 static void xputenv (const char *);
203 static void putenv_from_prefixes (const struct path_prefix
*, const char *,
205 static int access_check (const char *, int);
206 static char *find_a_file (const struct path_prefix
*, const char *, int, bool);
207 static void add_prefix (struct path_prefix
*, const char *, const char *,
209 static void add_sysrooted_prefix (struct path_prefix
*, const char *,
210 const char *, int, int, int);
211 static char *skip_whitespace (char *);
212 static void delete_if_ordinary (const char *);
213 static void delete_temp_files (void);
214 static void delete_failure_queue (void);
215 static void clear_failure_queue (void);
216 static int check_live_switch (int, int);
217 static const char *handle_braces (const char *);
218 static inline bool input_suffix_matches (const char *, const char *);
219 static inline bool switch_matches (const char *, const char *, int);
220 static inline void mark_matching_switches (const char *, const char *, int);
221 static inline void process_marked_switches (void);
222 static const char *process_brace_body (const char *, const char *, const char *, int, int);
223 static const struct spec_function
*lookup_spec_function (const char *);
224 static const char *eval_spec_function (const char *, const char *);
225 static const char *handle_spec_function (const char *, bool *);
226 static char *save_string (const char *, int);
227 static void set_collect_gcc_options (void);
228 static int do_spec_1 (const char *, int, const char *);
229 static int do_spec_2 (const char *);
230 static void do_option_spec (const char *, const char *);
231 static void do_self_spec (const char *);
232 static const char *find_file (const char *);
233 static int is_directory (const char *, bool);
234 static const char *validate_switches (const char *, bool);
235 static void validate_all_switches (void);
236 static inline void validate_switches_from_spec (const char *, bool);
237 static void give_switch (int, int);
238 static int used_arg (const char *, int);
239 static int default_arg (const char *, int);
240 static void set_multilib_dir (void);
241 static void print_multilib_info (void);
242 static void perror_with_name (const char *);
243 static void display_help (void);
244 static void add_preprocessor_option (const char *, int);
245 static void add_assembler_option (const char *, int);
246 static void add_linker_option (const char *, int);
247 static void process_command (unsigned int, struct cl_decoded_option
*);
248 static int execute (void);
249 static void alloc_args (void);
250 static void clear_args (void);
251 static void fatal_signal (int);
252 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
253 static void init_gcc_specs (struct obstack
*, const char *, const char *,
256 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
257 static const char *convert_filename (const char *, int, int);
260 static void try_generate_repro (const char **argv
);
261 static const char *getenv_spec_function (int, const char **);
262 static const char *if_exists_spec_function (int, const char **);
263 static const char *if_exists_else_spec_function (int, const char **);
264 static const char *sanitize_spec_function (int, const char **);
265 static const char *replace_outfile_spec_function (int, const char **);
266 static const char *remove_outfile_spec_function (int, const char **);
267 static const char *version_compare_spec_function (int, const char **);
268 static const char *include_spec_function (int, const char **);
269 static const char *find_file_spec_function (int, const char **);
270 static const char *find_plugindir_spec_function (int, const char **);
271 static const char *print_asm_header_spec_function (int, const char **);
272 static const char *compare_debug_dump_opt_spec_function (int, const char **);
273 static const char *compare_debug_self_opt_spec_function (int, const char **);
274 static const char *compare_debug_auxbase_opt_spec_function (int, const char **);
275 static const char *pass_through_libs_spec_func (int, const char **);
276 static const char *replace_extension_spec_func (int, const char **);
277 static char *convert_white_space (char *);
279 /* The Specs Language
281 Specs are strings containing lines, each of which (if not blank)
282 is made up of a program name, and arguments separated by spaces.
283 The program name must be exact and start from root, since no path
284 is searched and it is unreliable to depend on the current working directory.
285 Redirection of input or output is not supported; the subprograms must
286 accept filenames saying what files to read and write.
288 In addition, the specs can contain %-sequences to substitute variable text
289 or for conditional text. Here is a table of all defined %-sequences.
290 Note that spaces are not generated automatically around the results of
291 expanding these sequences; therefore, you can concatenate them together
292 or with constant text in a single argument.
294 %% substitute one % into the program name or argument.
295 %i substitute the name of the input file being processed.
296 %b substitute the basename of the input file being processed.
297 This is the substring up to (and not including) the last period
298 and not including the directory unless -save-temps was specified
299 to put temporaries in a different location.
300 %B same as %b, but include the file suffix (text after the last period).
302 substitute a file name that has suffix SUFFIX and is chosen
303 once per compilation, and mark the argument a la %d. To reduce
304 exposure to denial-of-service attacks, the file name is now
305 chosen in a way that is hard to predict even when previously
306 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
307 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
308 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
309 had been pre-processed. Previously, %g was simply substituted
310 with a file name chosen once per compilation, without regard
311 to any appended suffix (which was therefore treated just like
312 ordinary text), making such attacks more likely to succeed.
314 like %g, but if -pipe is in effect, expands simply to "-".
316 like %g, but if -pipe is in effect, expands to nothing. (We have both
317 %| and %m to accommodate differences between system assemblers; see
318 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
320 like %g, but generates a new temporary file name even if %uSUFFIX
323 substitutes the last file name generated with %uSUFFIX, generating a
324 new one if there is no such last file name. In the absence of any
325 %uSUFFIX, this is just like %gSUFFIX, except they don't share
326 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
327 would involve the generation of two distinct file names, one
328 for each `%g.s' and another for each `%U.s'. Previously, %U was
329 simply substituted with a file name chosen for the previous %u,
330 without regard to any appended suffix.
332 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
333 writable, and if save-temps is off; otherwise, substitute the name
334 of a temporary file, just like %u. This temporary file is not
335 meant for communication between processes, but rather as a junk
338 substitutes .SUFFIX for the suffixes of a matched switch's args when
339 it is subsequently output with %*. SUFFIX is terminated by the next
341 %d marks the argument containing or following the %d as a
342 temporary file name, so that that file will be deleted if GCC exits
343 successfully. Unlike %g, this contributes no text to the argument.
344 %w marks the argument containing or following the %w as the
345 "output file" of this compilation. This puts the argument
346 into the sequence of arguments that %o will substitute later.
347 %V indicates that this compilation produces no "output file".
349 like %{...} but mark last argument supplied within
350 as a file to be deleted on failure.
351 %o substitutes the names of all the output files, with spaces
352 automatically placed around them. You should write spaces
353 around the %o as well or the results are undefined.
354 %o is for use in the specs for running the linker.
355 Input files whose names have no recognized suffix are not compiled
356 at all, but they are included among the output files, so they will
358 %O substitutes the suffix for object files. Note that this is
359 handled specially when it immediately follows %g, %u, or %U
360 (with or without a suffix argument) because of the need for
361 those to form complete file names. The handling is such that
362 %O is treated exactly as if it had already been substituted,
363 except that %g, %u, and %U do not currently support additional
364 SUFFIX characters following %O as they would following, for
366 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
367 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
368 and -B options) and -imultilib as necessary.
369 %s current argument is the name of a library or startup file of some sort.
370 Search for that file in a standard list of directories
371 and substitute the full name found.
372 %eSTR Print STR as an error message. STR is terminated by a newline.
373 Use this when inconsistent options are detected.
374 %nSTR Print STR as a notice. STR is terminated by a newline.
375 %x{OPTION} Accumulate an option for %X.
376 %X Output the accumulated linker options specified by compilations.
377 %Y Output the accumulated assembler options specified by compilations.
378 %Z Output the accumulated preprocessor options specified by compilations.
379 %a process ASM_SPEC as a spec.
380 This allows config.h to specify part of the spec for running as.
381 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
382 used here. This can be used to run a post-processor after the
383 assembler has done its job.
384 %D Dump out a -L option for each directory in startfile_prefixes.
385 If multilib_dir is set, extra entries are generated with it affixed.
386 %l process LINK_SPEC as a spec.
387 %L process LIB_SPEC as a spec.
388 %M Output multilib_os_dir.
389 %G process LIBGCC_SPEC as a spec.
390 %R Output the concatenation of target_system_root and
391 target_sysroot_suffix.
392 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
393 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
394 %C process CPP_SPEC as a spec.
395 %1 process CC1_SPEC as a spec.
396 %2 process CC1PLUS_SPEC as a spec.
397 %* substitute the variable part of a matched option. (See below.)
398 Note that each comma in the substituted string is replaced by
399 a single space. A space is appended after the last substition
400 unless there is more text in current sequence.
401 %<S remove all occurrences of -S from the command line.
402 Note - this command is position dependent. % commands in the
403 spec string before this one will see -S, % commands in the
404 spec string after this one will not.
405 %>S Similar to "%<S", but keep it in the GCC command line.
406 %<S* remove all occurrences of all switches beginning with -S from the
409 Call the named function FUNCTION, passing it ARGS. ARGS is
410 first processed as a nested spec string, then split into an
411 argument vector in the usual fashion. The function returns
412 a string which is processed as if it had appeared literally
413 as part of the current spec.
414 %{S} substitutes the -S switch, if that switch was given to GCC.
415 If that switch was not specified, this substitutes nothing.
416 Here S is a metasyntactic variable.
417 %{S*} substitutes all the switches specified to GCC whose names start
418 with -S. This is used for -o, -I, etc; switches that take
419 arguments. GCC considers `-o foo' as being one switch whose
420 name starts with `o'. %{o*} would substitute this text,
421 including the space; thus, two arguments would be generated.
422 %{S*&T*} likewise, but preserve order of S and T options (the order
423 of S and T in the spec is not significant). Can be any number
424 of ampersand-separated variables; for each the wild card is
425 optional. Useful for CPP as %{D*&U*&A*}.
427 %{S:X} substitutes X, if the -S switch was given to GCC.
428 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
429 %{S*:X} substitutes X if one or more switches whose names start
430 with -S was given to GCC. Normally X is substituted only
431 once, no matter how many such switches appeared. However,
432 if %* appears somewhere in X, then X will be substituted
433 once for each matching switch, with the %* replaced by the
434 part of that switch that matched the '*'. A space will be
435 appended after the last substition unless there is more
436 text in current sequence.
437 %{.S:X} substitutes X, if processing a file with suffix S.
438 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
439 %{,S:X} substitutes X, if processing a file which will use spec S.
440 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
442 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
443 combined with '!', '.', ',', and '*' as above binding stronger
445 If %* appears in X, all of the alternatives must be starred, and
446 only the first matching alternative is substituted.
447 %{%:function(args):X}
448 Call function named FUNCTION with args ARGS. If the function
449 returns non-NULL, then X is substituted, if it returns
450 NULL, it isn't substituted.
451 %{S:X; if S was given to GCC, substitutes X;
452 T:Y; else if T was given to GCC, substitutes Y;
453 :D} else substitutes D. There can be as many clauses as you need.
454 This may be combined with '.', '!', ',', '|', and '*' as above.
456 %(Spec) processes a specification defined in a specs file as *Spec:
458 The conditional text X in a %{S:X} or similar construct may contain
459 other nested % constructs or spaces, or even newlines. They are
460 processed as usual, as described above. Trailing white space in X is
461 ignored. White space may also appear anywhere on the left side of the
462 colon in these constructs, except between . or * and the corresponding
465 The -O, -f, -g, -m, and -W switches are handled specifically in these
466 constructs. If another value of -O or the negated form of a -f, -m, or
467 -W switch is found later in the command line, the earlier switch
468 value is ignored, except with {S*} where S is just one letter; this
469 passes all matching options.
471 The character | at the beginning of the predicate text is used to indicate
472 that a command should be piped to the following command, but only if -pipe
475 Note that it is built into GCC which switches take arguments and which
476 do not. You might think it would be useful to generalize this to
477 allow each compiler's spec to say which switches take arguments. But
478 this cannot be done in a consistent fashion. GCC cannot even decide
479 which input files have been specified without knowing which switches
480 take arguments, and it must know which input files to compile in order
481 to tell which compilers to run.
483 GCC also knows implicitly that arguments starting in `-l' are to be
484 treated as compiler output files, and passed to the linker in their
485 proper position among the other output files. */
487 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
489 /* config.h can define ASM_SPEC to provide extra args to the assembler
490 or extra switch-translations. */
495 /* config.h can define ASM_FINAL_SPEC to run a post processor after
496 the assembler has run. */
497 #ifndef ASM_FINAL_SPEC
498 #define ASM_FINAL_SPEC \
500 objcopy --extract-dwo \
501 %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \
502 %{c:%{o*:%:replace-extension(%{o*:%*} .dwo)}%{!o*:%b.dwo}}%{!c:%b.dwo} \n\
503 objcopy --strip-dwo \
504 %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \
508 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
509 or extra switch-translations. */
514 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
515 or extra switch-translations. */
520 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
521 or extra switch-translations. */
523 #define CC1PLUS_SPEC ""
526 /* config.h can define LINK_SPEC to provide extra args to the linker
527 or extra switch-translations. */
532 /* config.h can define LIB_SPEC to override the default libraries. */
534 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
537 /* When using -fsplit-stack we need to wrap pthread_create, in order
538 to initialize the stack guard. We always use wrapping, rather than
539 shared library ordering, and we keep the wrapper function in
540 libgcc. This is not yet a real spec, though it could become one;
541 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping
542 only works with GNU ld and gold. */
543 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}"
546 #define STATIC_LIBASAN_LIBS \
547 " %{static-libasan:%:include(libsanitizer.spec)%(link_libasan)}"
548 #ifdef LIBASAN_EARLY_SPEC
549 #define LIBASAN_SPEC STATIC_LIBASAN_LIBS
550 #elif defined(HAVE_LD_STATIC_DYNAMIC)
551 #define LIBASAN_SPEC "%{static-libasan:" LD_STATIC_OPTION \
552 "} -lasan %{static-libasan:" LD_DYNAMIC_OPTION "}" \
555 #define LIBASAN_SPEC "-lasan" STATIC_LIBASAN_LIBS
559 #ifndef LIBASAN_EARLY_SPEC
560 #define LIBASAN_EARLY_SPEC ""
564 #define STATIC_LIBTSAN_LIBS \
565 " %{static-libtsan:%:include(libsanitizer.spec)%(link_libtsan)}"
566 #ifdef LIBTSAN_EARLY_SPEC
567 #define LIBTSAN_SPEC STATIC_LIBTSAN_LIBS
568 #elif defined(HAVE_LD_STATIC_DYNAMIC)
569 #define LIBTSAN_SPEC "%{static-libtsan:" LD_STATIC_OPTION \
570 "} -ltsan %{static-libtsan:" LD_DYNAMIC_OPTION "}" \
573 #define LIBTSAN_SPEC "-ltsan" STATIC_LIBTSAN_LIBS
577 #ifndef LIBTSAN_EARLY_SPEC
578 #define LIBTSAN_EARLY_SPEC ""
582 #define STATIC_LIBLSAN_LIBS \
583 " %{static-liblsan:%:include(libsanitizer.spec)%(link_liblsan)}"
584 #ifdef LIBLSAN_EARLY_SPEC
585 #define LIBLSAN_SPEC STATIC_LIBLSAN_LIBS
586 #elif defined(HAVE_LD_STATIC_DYNAMIC)
587 #define LIBLSAN_SPEC "%{static-liblsan:" LD_STATIC_OPTION \
588 "} -llsan %{static-liblsan:" LD_DYNAMIC_OPTION "}" \
591 #define LIBLSAN_SPEC "-llsan" STATIC_LIBLSAN_LIBS
595 #ifndef LIBLSAN_EARLY_SPEC
596 #define LIBLSAN_EARLY_SPEC ""
599 #ifndef LIBUBSAN_SPEC
600 #define STATIC_LIBUBSAN_LIBS \
601 " %{static-libubsan:%:include(libsanitizer.spec)%(link_libubsan)}"
602 #ifdef HAVE_LD_STATIC_DYNAMIC
603 #define LIBUBSAN_SPEC "%{static-libubsan:" LD_STATIC_OPTION \
604 "} -lubsan %{static-libubsan:" LD_DYNAMIC_OPTION "}" \
607 #define LIBUBSAN_SPEC "-lubsan" STATIC_LIBUBSAN_LIBS
611 /* Linker options for compressed debug sections. */
612 #if HAVE_LD_COMPRESS_DEBUG == 0
613 /* No linker support. */
614 #define LINK_COMPRESS_DEBUG_SPEC \
615 " %{gz*:%e-gz is not supported in this configuration} "
616 #elif HAVE_LD_COMPRESS_DEBUG == 1
617 /* GNU style on input, GNU ld options. Reject, not useful. */
618 #define LINK_COMPRESS_DEBUG_SPEC \
619 " %{gz*:%e-gz is not supported in this configuration} "
620 #elif HAVE_LD_COMPRESS_DEBUG == 2
621 /* GNU style, GNU gold options. */
622 #define LINK_COMPRESS_DEBUG_SPEC \
623 " %{gz|gz=zlib-gnu:" LD_COMPRESS_DEBUG_OPTION "=zlib}" \
624 " %{gz=none:" LD_COMPRESS_DEBUG_OPTION "=none}" \
625 " %{gz=zlib:%e-gz=zlib is not supported in this configuration} "
626 #elif HAVE_LD_COMPRESS_DEBUG == 3
627 /* ELF gABI style. */
628 #define LINK_COMPRESS_DEBUG_SPEC \
629 " %{gz|gz=zlib:" LD_COMPRESS_DEBUG_OPTION "=zlib}" \
630 " %{gz=none:" LD_COMPRESS_DEBUG_OPTION "=none}" \
631 " %{gz=zlib-gnu:" LD_COMPRESS_DEBUG_OPTION "=zlib-gnu} "
633 #error Unknown value for HAVE_LD_COMPRESS_DEBUG.
636 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
639 #if defined(REAL_LIBGCC_SPEC)
640 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
641 #elif defined(LINK_LIBGCC_SPECIAL_1)
642 /* Have gcc do the search for libgcc.a. */
643 #define LIBGCC_SPEC "libgcc.a%s"
645 #define LIBGCC_SPEC "-lgcc"
649 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
650 #ifndef STARTFILE_SPEC
651 #define STARTFILE_SPEC \
652 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
655 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
657 #define ENDFILE_SPEC ""
661 #define LINKER_NAME "collect2"
664 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
665 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
670 /* Assembler options for compressed debug sections. */
671 #if HAVE_LD_COMPRESS_DEBUG < 2
672 /* Reject if the linker cannot write compressed debug sections. */
673 #define ASM_COMPRESS_DEBUG_SPEC \
674 " %{gz*:%e-gz is not supported in this configuration} "
675 #else /* HAVE_LD_COMPRESS_DEBUG >= 2 */
676 #if HAVE_AS_COMPRESS_DEBUG == 0
677 /* No assembler support. Ignore silently. */
678 #define ASM_COMPRESS_DEBUG_SPEC \
680 #elif HAVE_AS_COMPRESS_DEBUG == 1
681 /* GNU style, GNU as options. */
682 #define ASM_COMPRESS_DEBUG_SPEC \
683 " %{gz|gz=zlib-gnu:" AS_COMPRESS_DEBUG_OPTION "}" \
684 " %{gz=none:" AS_NO_COMPRESS_DEBUG_OPTION "}" \
685 " %{gz=zlib:%e-gz=zlib is not supported in this configuration} "
686 #elif HAVE_AS_COMPRESS_DEBUG == 2
687 /* ELF gABI style. */
688 #define ASM_COMPRESS_DEBUG_SPEC \
689 " %{gz|gz=zlib:" AS_COMPRESS_DEBUG_OPTION "=zlib}" \
690 " %{gz=none:" AS_COMPRESS_DEBUG_OPTION "=none}" \
691 " %{gz=zlib-gnu:" AS_COMPRESS_DEBUG_OPTION "=zlib-gnu} "
693 #error Unknown value for HAVE_AS_COMPRESS_DEBUG.
695 #endif /* HAVE_LD_COMPRESS_DEBUG >= 2 */
697 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
699 #ifndef ASM_DEBUG_SPEC
700 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
701 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
702 # define ASM_DEBUG_SPEC \
703 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
704 ? "%{!g0:%{gdwarf*:--gdwarf2}%{!gdwarf*:%{g*:--gstabs}}}" ASM_MAP \
705 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
707 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
708 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
710 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
711 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
715 #ifndef ASM_DEBUG_SPEC
716 # define ASM_DEBUG_SPEC ""
719 /* Here is the spec for running the linker, after compiling all files. */
721 /* This is overridable by the target in case they need to specify the
722 -lgcc and -lc order specially, yet not require them to override all
723 of LINK_COMMAND_SPEC. */
724 #ifndef LINK_GCC_C_SEQUENCE_SPEC
725 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
728 #ifndef LINK_SSP_SPEC
729 #ifdef TARGET_LIBC_PROVIDES_SSP
730 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
731 "|fstack-protector-strong|fstack-protector-explicit:}"
733 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
734 "|fstack-protector-strong|fstack-protector-explicit" \
735 ":-lssp_nonshared -lssp}"
739 #ifdef ENABLE_DEFAULT_PIE
740 #define NO_PIE_SPEC "no-pie|static"
741 #define PIE_SPEC NO_PIE_SPEC "|r|shared:;"
742 #define NO_FPIE1_SPEC "fno-pie"
743 #define FPIE1_SPEC NO_FPIE1_SPEC ":;"
744 #define NO_FPIE2_SPEC "fno-PIE"
745 #define FPIE2_SPEC NO_FPIE2_SPEC ":;"
746 #define NO_FPIE_SPEC NO_FPIE1_SPEC "|" NO_FPIE2_SPEC
747 #define FPIE_SPEC NO_FPIE_SPEC ":;"
748 #define NO_FPIC1_SPEC "fno-pic"
749 #define FPIC1_SPEC NO_FPIC1_SPEC ":;"
750 #define NO_FPIC2_SPEC "fno-PIC"
751 #define FPIC2_SPEC NO_FPIC2_SPEC ":;"
752 #define NO_FPIC_SPEC NO_FPIC1_SPEC "|" NO_FPIC2_SPEC
753 #define FPIC_SPEC NO_FPIC_SPEC ":;"
754 #define NO_FPIE1_AND_FPIC1_SPEC NO_FPIE1_SPEC "|" NO_FPIC1_SPEC
755 #define FPIE1_OR_FPIC1_SPEC NO_FPIE1_AND_FPIC1_SPEC ":;"
756 #define NO_FPIE2_AND_FPIC2_SPEC NO_FPIE2_SPEC "|" NO_FPIC2_SPEC
757 #define FPIE2_OR_FPIC2_SPEC NO_FPIE2_AND_FPIC2_SPEC ":;"
758 #define NO_FPIE_AND_FPIC_SPEC NO_FPIE_SPEC "|" NO_FPIC_SPEC
759 #define FPIE_OR_FPIC_SPEC NO_FPIE_AND_FPIC_SPEC ":;"
761 #define PIE_SPEC "pie"
762 #define NO_PIE_SPEC PIE_SPEC "|r|shared:;"
763 #define FPIE1_SPEC "fpie"
764 #define NO_FPIE1_SPEC FPIE1_SPEC ":;"
765 #define FPIE2_SPEC "fPIE"
766 #define NO_FPIE2_SPEC FPIE2_SPEC ":;"
767 #define FPIE_SPEC FPIE1_SPEC "|" FPIE2_SPEC
768 #define NO_FPIE_SPEC FPIE_SPEC ":;"
769 #define FPIC1_SPEC "fpic"
770 #define NO_FPIC1_SPEC FPIC1_SPEC ":;"
771 #define FPIC2_SPEC "fPIC"
772 #define NO_FPIC2_SPEC FPIC2_SPEC ":;"
773 #define FPIC_SPEC FPIC1_SPEC "|" FPIC2_SPEC
774 #define NO_FPIC_SPEC FPIC_SPEC ":;"
775 #define FPIE1_OR_FPIC1_SPEC FPIE1_SPEC "|" FPIC1_SPEC
776 #define NO_FPIE1_AND_FPIC1_SPEC FPIE1_OR_FPIC1_SPEC ":;"
777 #define FPIE2_OR_FPIC2_SPEC FPIE2_SPEC "|" FPIC2_SPEC
778 #define NO_FPIE2_AND_FPIC2_SPEC FPIE1_OR_FPIC2_SPEC ":;"
779 #define FPIE_OR_FPIC_SPEC FPIE_SPEC "|" FPIC_SPEC
780 #define NO_FPIE_AND_FPIC_SPEC FPIE_OR_FPIC_SPEC ":;"
783 #ifndef LINK_PIE_SPEC
785 #define LD_PIE_SPEC "-pie"
787 #define LD_PIE_SPEC ""
789 #define LINK_PIE_SPEC "%{no-pie:} " "%{" PIE_SPEC ":" LD_PIE_SPEC "} "
792 #ifndef LINK_BUILDID_SPEC
793 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
794 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
798 /* Conditional to test whether the LTO plugin is used or not.
799 FIXME: For slim LTO we will need to enable plugin unconditionally. This
800 still cause problems with PLUGIN_LD != LD and when plugin is built but
801 not useable. For GCC 4.6 we don't support slim LTO and thus we can enable
802 plugin only when LTO is enabled. We still honor explicit
803 -fuse-linker-plugin if the linker used understands -plugin. */
805 /* The linker has some plugin support. */
806 #if HAVE_LTO_PLUGIN > 0
807 /* The linker used has full plugin support, use LTO plugin by default. */
808 #if HAVE_LTO_PLUGIN == 2
809 #define PLUGIN_COND "!fno-use-linker-plugin:%{!fno-lto"
810 #define PLUGIN_COND_CLOSE "}"
812 /* The linker used has limited plugin support, use LTO plugin with explicit
813 -fuse-linker-plugin. */
814 #define PLUGIN_COND "fuse-linker-plugin"
815 #define PLUGIN_COND_CLOSE ""
817 #define LINK_PLUGIN_SPEC \
819 -plugin %(linker_plugin_file) \
820 -plugin-opt=%(lto_wrapper) \
821 -plugin-opt=-fresolution=%u.res \
822 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
825 /* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */
826 #define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\
827 %e-fuse-linker-plugin is not supported in this configuration}"
830 /* Linker command line options for -fsanitize= early on the command line. */
831 #ifndef SANITIZER_EARLY_SPEC
832 #define SANITIZER_EARLY_SPEC "\
833 %{!nostdlib:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_EARLY_SPEC "} \
834 %{%:sanitize(thread):" LIBTSAN_EARLY_SPEC "} \
835 %{%:sanitize(leak):" LIBLSAN_EARLY_SPEC "}}}"
838 /* Linker command line options for -fsanitize= late on the command line. */
839 #ifndef SANITIZER_SPEC
840 #define SANITIZER_SPEC "\
841 %{!nostdlib:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_SPEC "\
842 %{static:%ecannot specify -static with -fsanitize=address}}\
843 %{%:sanitize(thread):" LIBTSAN_SPEC "\
844 %{static:%ecannot specify -static with -fsanitize=thread}}\
845 %{%:sanitize(undefined):" LIBUBSAN_SPEC "}\
846 %{%:sanitize(leak):" LIBLSAN_SPEC "}}}"
849 /* This is the spec to use, once the code for creating the vtable
850 verification runtime library, libvtv.so, has been created. Currently
851 the vtable verification runtime functions are in libstdc++, so we use
852 the spec just below this one. */
853 #ifndef VTABLE_VERIFICATION_SPEC
854 #define VTABLE_VERIFICATION_SPEC "\
855 %{!nostdlib:%{fvtable-verify=std: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}\
856 %{fvtable-verify=preinit: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}}"
863 /* -u* was put back because both BSD and SysV seem to support it. */
864 /* %{static:} simply prevents an error message if the target machine
865 doesn't handle -static. */
866 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
867 scripts which exist in user specified directories, or in standard
869 /* We pass any -flto flags on to the linker, which is expected
870 to understand them. In practice, this means it had better be collect2. */
871 /* %{e*} includes -export-dynamic; see comment in common.opt. */
872 #ifndef LINK_COMMAND_SPEC
873 #define LINK_COMMAND_SPEC "\
874 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
877 "%{flto|flto=*:%<fcompare-debug*} \
878 %{flto} %{fno-lto} %{flto=*} %l " LINK_PIE_SPEC \
879 "%{fuse-ld=*:-fuse-ld=%*} " LINK_COMPRESS_DEBUG_SPEC \
880 "%X %{o*} %{e*} %{N} %{n} %{r}\
881 %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}} " VTABLE_VERIFICATION_SPEC " \
882 %{static:} %{L*} %(mfwrap) %(link_libgcc) " SANITIZER_EARLY_SPEC " %o\
884 %{fopenacc|fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
885 %{fcilkplus:%:include(libcilkrts.spec)%(link_cilkrts)}\
886 %{fgnu-tm:%:include(libitm.spec)%(link_itm)}\
887 %(mflib) " STACK_SPLIT_SPEC "\
888 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} " SANITIZER_SPEC " \
889 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
890 %{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}"
893 #ifndef LINK_LIBGCC_SPEC
894 /* Generate -L options for startfile prefix list. */
895 # define LINK_LIBGCC_SPEC "%D"
898 #ifndef STARTFILE_PREFIX_SPEC
899 # define STARTFILE_PREFIX_SPEC ""
903 # define SYSROOT_SPEC "--sysroot=%R"
906 #ifndef SYSROOT_SUFFIX_SPEC
907 # define SYSROOT_SUFFIX_SPEC ""
910 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
911 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
914 static const char *asm_debug
= ASM_DEBUG_SPEC
;
915 static const char *cpp_spec
= CPP_SPEC
;
916 static const char *cc1_spec
= CC1_SPEC
;
917 static const char *cc1plus_spec
= CC1PLUS_SPEC
;
918 static const char *link_gcc_c_sequence_spec
= LINK_GCC_C_SEQUENCE_SPEC
;
919 static const char *link_ssp_spec
= LINK_SSP_SPEC
;
920 static const char *asm_spec
= ASM_SPEC
;
921 static const char *asm_final_spec
= ASM_FINAL_SPEC
;
922 static const char *link_spec
= LINK_SPEC
;
923 static const char *lib_spec
= LIB_SPEC
;
924 static const char *link_gomp_spec
= "";
925 static const char *libgcc_spec
= LIBGCC_SPEC
;
926 static const char *endfile_spec
= ENDFILE_SPEC
;
927 static const char *startfile_spec
= STARTFILE_SPEC
;
928 static const char *linker_name_spec
= LINKER_NAME
;
929 static const char *linker_plugin_file_spec
= "";
930 static const char *lto_wrapper_spec
= "";
931 static const char *lto_gcc_spec
= "";
932 static const char *link_command_spec
= LINK_COMMAND_SPEC
;
933 static const char *link_libgcc_spec
= LINK_LIBGCC_SPEC
;
934 static const char *startfile_prefix_spec
= STARTFILE_PREFIX_SPEC
;
935 static const char *sysroot_spec
= SYSROOT_SPEC
;
936 static const char *sysroot_suffix_spec
= SYSROOT_SUFFIX_SPEC
;
937 static const char *sysroot_hdrs_suffix_spec
= SYSROOT_HEADERS_SUFFIX_SPEC
;
938 static const char *self_spec
= "";
940 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
941 There should be no need to override these in target dependent files,
942 but we need to copy them to the specs file so that newer versions
943 of the GCC driver can correctly drive older tool chains with the
944 appropriate -B options. */
946 /* When cpplib handles traditional preprocessing, get rid of this, and
947 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
948 that we default the front end language better. */
949 static const char *trad_capable_cpp
=
950 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}";
952 /* We don't wrap .d files in %W{} since a missing .d file, and
953 therefore no dependency entry, confuses make into thinking a .o
954 file that happens to exist is up-to-date. */
955 static const char *cpp_unique_options
=
956 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
957 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
958 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
959 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
960 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
961 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
962 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
963 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
966 /* This contains cpp options which are common with cc1_options and are passed
967 only when preprocessing only to avoid duplication. We pass the cc1 spec
968 options to the preprocessor so that it the cc1 spec may manipulate
969 options used to set target flags. Those special target flags settings may
970 in turn cause preprocessor symbols to be defined specially. */
971 static const char *cpp_options
=
972 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
973 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
974 %{undef} %{save-temps*:-fpch-preprocess}";
976 /* This contains cpp options which are not passed when the preprocessor
977 output will be used by another program. */
978 static const char *cpp_debug_options
= "%{d*}";
980 /* NB: This is shared amongst all front-ends, except for Ada. */
981 static const char *cc1_options
=
982 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
983 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
984 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
985 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
986 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
987 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
988 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
989 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\
990 %{-target-help:--target-help}\
991 %{-version:--version}\
992 %{-help=*:--help=%*}\
993 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
994 %{fsyntax-only:-o %j} %{-param*}\
995 %{coverage:-fprofile-arcs -ftest-coverage}";
997 static const char *asm_options
=
998 "%{-target-help:%:print-asm-header()} "
1000 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
1001 to the assembler equivalents. */
1002 "%{v} %{w:-W} %{I*} "
1004 ASM_COMPRESS_DEBUG_SPEC
1005 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
1007 static const char *invoke_as
=
1008 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
1010 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
1011 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
1015 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
1016 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
1020 /* Some compilers have limits on line lengths, and the multilib_select
1021 and/or multilib_matches strings can be very long, so we build them at
1023 static struct obstack multilib_obstack
;
1024 static const char *multilib_select
;
1025 static const char *multilib_matches
;
1026 static const char *multilib_defaults
;
1027 static const char *multilib_exclusions
;
1028 static const char *multilib_reuse
;
1030 /* Check whether a particular argument is a default argument. */
1032 #ifndef MULTILIB_DEFAULTS
1033 #define MULTILIB_DEFAULTS { "" }
1036 static const char *const multilib_defaults_raw
[] = MULTILIB_DEFAULTS
;
1038 #ifndef DRIVER_SELF_SPECS
1039 #define DRIVER_SELF_SPECS ""
1042 /* Linking to libgomp implies pthreads. This is particularly important
1043 for targets that use different start files and suchlike. */
1044 #ifndef GOMP_SELF_SPECS
1045 #define GOMP_SELF_SPECS "%{fopenacc|fopenmp|ftree-parallelize-loops=*: " \
1049 /* Likewise for -fgnu-tm. */
1050 #ifndef GTM_SELF_SPECS
1051 #define GTM_SELF_SPECS "%{fgnu-tm: -pthread}"
1054 /* Likewise for -fcilkplus. */
1055 #ifndef CILK_SELF_SPECS
1056 #define CILK_SELF_SPECS "%{fcilkplus: -pthread}"
1059 static const char *const driver_self_specs
[] = {
1060 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
1061 DRIVER_SELF_SPECS
, CONFIGURE_SPECS
, GOMP_SELF_SPECS
, GTM_SELF_SPECS
,
1065 #ifndef OPTION_DEFAULT_SPECS
1066 #define OPTION_DEFAULT_SPECS { "", "" }
1075 static const struct default_spec
1076 option_default_specs
[] = { OPTION_DEFAULT_SPECS
};
1080 struct user_specs
*next
;
1081 const char *filename
;
1084 static struct user_specs
*user_specs_head
, *user_specs_tail
;
1087 /* Record the mapping from file suffixes for compilation specs. */
1091 const char *suffix
; /* Use this compiler for input files
1092 whose names end in this suffix. */
1094 const char *spec
; /* To use this compiler, run this spec. */
1096 const char *cpp_spec
; /* If non-NULL, substitute this spec
1097 for `%C', rather than the usual
1099 const int combinable
; /* If nonzero, compiler can deal with
1100 multiple source files at once (IMA). */
1101 const int needs_preprocessing
; /* If nonzero, source files need to
1102 be run through a preprocessor. */
1105 /* Pointer to a vector of `struct compiler' that gives the spec for
1106 compiling a file, based on its suffix.
1107 A file that does not end in any of these suffixes will be passed
1108 unchanged to the loader and nothing else will be done to it.
1110 An entry containing two 0s is used to terminate the vector.
1112 If multiple entries match a file, the last matching one is used. */
1114 static struct compiler
*compilers
;
1116 /* Number of entries in `compilers', not counting the null terminator. */
1118 static int n_compilers
;
1120 /* The default list of file name suffixes and their compilation specs. */
1122 static const struct compiler default_compilers
[] =
1124 /* Add lists of suffixes of known languages here. If those languages
1125 were not present when we built the driver, we will hit these copies
1126 and be given a more meaningful error than "file not used since
1127 linking is not done". */
1128 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
1129 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
1130 {".mii", "#Objective-C++", 0, 0, 0},
1131 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
1132 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
1133 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
1134 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
1135 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
1136 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
1137 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
1138 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
1139 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
1140 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
1141 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
1142 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
1143 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
1144 {".r", "#Ratfor", 0, 0, 0},
1145 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
1146 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
1147 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
1148 {".go", "#Go", 0, 1, 0},
1149 /* Next come the entries for C. */
1150 {".c", "@c", 0, 0, 1},
1152 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1153 external preprocessor if -save-temps is given. */
1154 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1157 %eGNU C no longer supports -traditional without -E}\
1158 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1159 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1160 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1162 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1163 cc1 %(cpp_unique_options) %(cc1_options)}}}\
1164 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
1166 "%{!E:%e-E or -x required when input is from standard input}\
1167 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
1168 {".h", "@c-header", 0, 0, 0},
1170 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1171 external preprocessor if -save-temps is given. */
1172 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1174 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1175 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1176 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1178 %{!fsyntax-only:-o %g.s \
1179 %{!fdump-ada-spec*:%{!o*:--output-pch=%i.gch}\
1180 %W{o*:--output-pch=%*}}%V}}\
1181 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1182 cc1 %(cpp_unique_options) %(cc1_options)\
1183 %{!fsyntax-only:-o %g.s \
1184 %{!fdump-ada-spec*:%{!o*:--output-pch=%i.gch}\
1185 %W{o*:--output-pch=%*}}%V}}}}}}}", 0, 0, 0},
1186 {".i", "@cpp-output", 0, 0, 0},
1188 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
1189 {".s", "@assembler", 0, 0, 0},
1191 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
1192 {".sx", "@assembler-with-cpp", 0, 0, 0},
1193 {".S", "@assembler-with-cpp", 0, 0, 0},
1194 {"@assembler-with-cpp",
1195 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
1196 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1197 %{E|M|MM:%(cpp_debug_options)}\
1198 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1199 as %(asm_debug) %(asm_options) %|.s %A }}}}"
1201 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1202 %{E|M|MM:%(cpp_debug_options)}\
1203 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1204 as %(asm_debug) %(asm_options) %m.s %A }}}}"
1209 /* Mark end of table. */
1213 /* Number of elements in default_compilers, not counting the terminator. */
1215 static const int n_default_compilers
= ARRAY_SIZE (default_compilers
) - 1;
1217 typedef char *char_p
; /* For DEF_VEC_P. */
1219 /* A vector of options to give to the linker.
1220 These options are accumulated by %x,
1221 and substituted into the linker command with %X. */
1222 static vec
<char_p
> linker_options
;
1224 /* A vector of options to give to the assembler.
1225 These options are accumulated by -Wa,
1226 and substituted into the assembler command with %Y. */
1227 static vec
<char_p
> assembler_options
;
1229 /* A vector of options to give to the preprocessor.
1230 These options are accumulated by -Wp,
1231 and substituted into the preprocessor command with %Z. */
1232 static vec
<char_p
> preprocessor_options
;
1235 skip_whitespace (char *p
)
1239 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1240 be considered whitespace. */
1241 if (p
[0] == '\n' && p
[1] == '\n' && p
[2] == '\n')
1243 else if (*p
== '\n' || *p
== ' ' || *p
== '\t')
1257 /* Structures to keep track of prefixes to try when looking for files. */
1261 const char *prefix
; /* String to prepend to the path. */
1262 struct prefix_list
*next
; /* Next in linked list. */
1263 int require_machine_suffix
; /* Don't use without machine_suffix. */
1264 /* 2 means try both machine_suffix and just_machine_suffix. */
1265 int priority
; /* Sort key - priority within list. */
1266 int os_multilib
; /* 1 if OS multilib scheme should be used,
1267 0 for GCC multilib scheme. */
1272 struct prefix_list
*plist
; /* List of prefixes to try */
1273 int max_len
; /* Max length of a prefix in PLIST */
1274 const char *name
; /* Name of this list (used in config stuff) */
1277 /* List of prefixes to try when looking for executables. */
1279 static struct path_prefix exec_prefixes
= { 0, 0, "exec" };
1281 /* List of prefixes to try when looking for startup (crt0) files. */
1283 static struct path_prefix startfile_prefixes
= { 0, 0, "startfile" };
1285 /* List of prefixes to try when looking for include files. */
1287 static struct path_prefix include_prefixes
= { 0, 0, "include" };
1289 /* Suffix to attach to directories searched for commands.
1290 This looks like `MACHINE/VERSION/'. */
1292 static const char *machine_suffix
= 0;
1294 /* Suffix to attach to directories searched for commands.
1295 This is just `MACHINE/'. */
1297 static const char *just_machine_suffix
= 0;
1299 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1301 static const char *gcc_exec_prefix
;
1303 /* Adjusted value of standard_libexec_prefix. */
1305 static const char *gcc_libexec_prefix
;
1307 /* Default prefixes to attach to command names. */
1309 #ifndef STANDARD_STARTFILE_PREFIX_1
1310 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1312 #ifndef STANDARD_STARTFILE_PREFIX_2
1313 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1316 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1317 #undef MD_EXEC_PREFIX
1318 #undef MD_STARTFILE_PREFIX
1319 #undef MD_STARTFILE_PREFIX_1
1322 /* If no prefixes defined, use the null string, which will disable them. */
1323 #ifndef MD_EXEC_PREFIX
1324 #define MD_EXEC_PREFIX ""
1326 #ifndef MD_STARTFILE_PREFIX
1327 #define MD_STARTFILE_PREFIX ""
1329 #ifndef MD_STARTFILE_PREFIX_1
1330 #define MD_STARTFILE_PREFIX_1 ""
1333 /* These directories are locations set at configure-time based on the
1334 --prefix option provided to configure. Their initializers are
1335 defined in Makefile.in. These paths are not *directly* used when
1336 gcc_exec_prefix is set because, in that case, we know where the
1337 compiler has been installed, and use paths relative to that
1338 location instead. */
1339 static const char *const standard_exec_prefix
= STANDARD_EXEC_PREFIX
;
1340 static const char *const standard_libexec_prefix
= STANDARD_LIBEXEC_PREFIX
;
1341 static const char *const standard_bindir_prefix
= STANDARD_BINDIR_PREFIX
;
1342 static const char *const standard_startfile_prefix
= STANDARD_STARTFILE_PREFIX
;
1344 /* For native compilers, these are well-known paths containing
1345 components that may be provided by the system. For cross
1346 compilers, these paths are not used. */
1347 static const char *md_exec_prefix
= MD_EXEC_PREFIX
;
1348 static const char *md_startfile_prefix
= MD_STARTFILE_PREFIX
;
1349 static const char *md_startfile_prefix_1
= MD_STARTFILE_PREFIX_1
;
1350 static const char *const standard_startfile_prefix_1
1351 = STANDARD_STARTFILE_PREFIX_1
;
1352 static const char *const standard_startfile_prefix_2
1353 = STANDARD_STARTFILE_PREFIX_2
;
1355 /* A relative path to be used in finding the location of tools
1356 relative to the driver. */
1357 static const char *const tooldir_base_prefix
= TOOLDIR_BASE_PREFIX
;
1359 /* A prefix to be used when this is an accelerator compiler. */
1360 static const char *const accel_dir_suffix
= ACCEL_DIR_SUFFIX
;
1362 /* Subdirectory to use for locating libraries. Set by
1363 set_multilib_dir based on the compilation options. */
1365 static const char *multilib_dir
;
1367 /* Subdirectory to use for locating libraries in OS conventions. Set by
1368 set_multilib_dir based on the compilation options. */
1370 static const char *multilib_os_dir
;
1372 /* Subdirectory to use for locating libraries in multiarch conventions. Set by
1373 set_multilib_dir based on the compilation options. */
1375 static const char *multiarch_dir
;
1377 /* Structure to keep track of the specs that have been defined so far.
1378 These are accessed using %(specname) in a compiler or link
1383 /* The following 2 fields must be first */
1384 /* to allow EXTRA_SPECS to be initialized */
1385 const char *name
; /* name of the spec. */
1386 const char *ptr
; /* available ptr if no static pointer */
1388 /* The following fields are not initialized */
1389 /* by EXTRA_SPECS */
1390 const char **ptr_spec
; /* pointer to the spec itself. */
1391 struct spec_list
*next
; /* Next spec in linked list. */
1392 int name_len
; /* length of the name */
1393 bool user_p
; /* whether string come from file spec. */
1394 bool alloc_p
; /* whether string was allocated */
1397 #define INIT_STATIC_SPEC(NAME,PTR) \
1398 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, false, false }
1400 /* List of statically defined specs. */
1401 static struct spec_list static_specs
[] =
1403 INIT_STATIC_SPEC ("asm", &asm_spec
),
1404 INIT_STATIC_SPEC ("asm_debug", &asm_debug
),
1405 INIT_STATIC_SPEC ("asm_final", &asm_final_spec
),
1406 INIT_STATIC_SPEC ("asm_options", &asm_options
),
1407 INIT_STATIC_SPEC ("invoke_as", &invoke_as
),
1408 INIT_STATIC_SPEC ("cpp", &cpp_spec
),
1409 INIT_STATIC_SPEC ("cpp_options", &cpp_options
),
1410 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options
),
1411 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options
),
1412 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp
),
1413 INIT_STATIC_SPEC ("cc1", &cc1_spec
),
1414 INIT_STATIC_SPEC ("cc1_options", &cc1_options
),
1415 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec
),
1416 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec
),
1417 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec
),
1418 INIT_STATIC_SPEC ("endfile", &endfile_spec
),
1419 INIT_STATIC_SPEC ("link", &link_spec
),
1420 INIT_STATIC_SPEC ("lib", &lib_spec
),
1421 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec
),
1422 INIT_STATIC_SPEC ("libgcc", &libgcc_spec
),
1423 INIT_STATIC_SPEC ("startfile", &startfile_spec
),
1424 INIT_STATIC_SPEC ("cross_compile", &cross_compile
),
1425 INIT_STATIC_SPEC ("version", &compiler_version
),
1426 INIT_STATIC_SPEC ("multilib", &multilib_select
),
1427 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults
),
1428 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra
),
1429 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches
),
1430 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions
),
1431 INIT_STATIC_SPEC ("multilib_options", &multilib_options
),
1432 INIT_STATIC_SPEC ("multilib_reuse", &multilib_reuse
),
1433 INIT_STATIC_SPEC ("linker", &linker_name_spec
),
1434 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec
),
1435 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec
),
1436 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec
),
1437 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec
),
1438 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix
),
1439 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix
),
1440 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1
),
1441 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec
),
1442 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec
),
1443 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec
),
1444 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec
),
1445 INIT_STATIC_SPEC ("self_spec", &self_spec
),
1448 #ifdef EXTRA_SPECS /* additional specs needed */
1449 /* Structure to keep track of just the first two args of a spec_list.
1450 That is all that the EXTRA_SPECS macro gives us. */
1453 const char *const name
;
1454 const char *const ptr
;
1457 static const struct spec_list_1 extra_specs_1
[] = { EXTRA_SPECS
};
1458 static struct spec_list
*extra_specs
= (struct spec_list
*) 0;
1461 /* List of dynamically allocates specs that have been defined so far. */
1463 static struct spec_list
*specs
= (struct spec_list
*) 0;
1465 /* List of static spec functions. */
1467 static const struct spec_function static_spec_functions
[] =
1469 { "getenv", getenv_spec_function
},
1470 { "if-exists", if_exists_spec_function
},
1471 { "if-exists-else", if_exists_else_spec_function
},
1472 { "sanitize", sanitize_spec_function
},
1473 { "replace-outfile", replace_outfile_spec_function
},
1474 { "remove-outfile", remove_outfile_spec_function
},
1475 { "version-compare", version_compare_spec_function
},
1476 { "include", include_spec_function
},
1477 { "find-file", find_file_spec_function
},
1478 { "find-plugindir", find_plugindir_spec_function
},
1479 { "print-asm-header", print_asm_header_spec_function
},
1480 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function
},
1481 { "compare-debug-self-opt", compare_debug_self_opt_spec_function
},
1482 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function
},
1483 { "pass-through-libs", pass_through_libs_spec_func
},
1484 { "replace-extension", replace_extension_spec_func
},
1485 #ifdef EXTRA_SPEC_FUNCTIONS
1486 EXTRA_SPEC_FUNCTIONS
1491 static int processing_spec_function
;
1493 /* Add appropriate libgcc specs to OBSTACK, taking into account
1494 various permutations of -shared-libgcc, -shared, and such. */
1496 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1498 #ifndef USE_LD_AS_NEEDED
1499 #define USE_LD_AS_NEEDED 0
1503 init_gcc_specs (struct obstack
*obstack
, const char *shared_name
,
1504 const char *static_name
, const char *eh_name
)
1508 buf
= concat ("%{static|static-libgcc:", static_name
, " ", eh_name
, "}"
1509 "%{!static:%{!static-libgcc:"
1510 #if USE_LD_AS_NEEDED
1511 "%{!shared-libgcc:",
1512 static_name
, " " LD_AS_NEEDED_OPTION
" ",
1513 shared_name
, " " LD_NO_AS_NEEDED_OPTION
1516 shared_name
, "%{!shared: ", static_name
, "}"
1520 "%{!shared-libgcc:", static_name
, " ", eh_name
, "}"
1521 "%{shared-libgcc:", shared_name
, " ", static_name
, "}"
1525 "%{shared-libgcc:", shared_name
, "}"
1526 "%{!shared-libgcc:", static_name
, "}"
1529 "%{shared:", shared_name
, "}"
1534 obstack_grow (obstack
, buf
, strlen (buf
));
1537 #endif /* ENABLE_SHARED_LIBGCC */
1539 /* Initialize the specs lookup routines. */
1544 struct spec_list
*next
= (struct spec_list
*) 0;
1545 struct spec_list
*sl
= (struct spec_list
*) 0;
1549 return; /* Already initialized. */
1552 fnotice (stderr
, "Using built-in specs.\n");
1555 extra_specs
= XCNEWVEC (struct spec_list
, ARRAY_SIZE (extra_specs_1
));
1557 for (i
= ARRAY_SIZE (extra_specs_1
) - 1; i
>= 0; i
--)
1559 sl
= &extra_specs
[i
];
1560 sl
->name
= extra_specs_1
[i
].name
;
1561 sl
->ptr
= extra_specs_1
[i
].ptr
;
1563 sl
->name_len
= strlen (sl
->name
);
1564 sl
->ptr_spec
= &sl
->ptr
;
1569 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1571 sl
= &static_specs
[i
];
1576 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1577 /* ??? If neither -shared-libgcc nor --static-libgcc was
1578 seen, then we should be making an educated guess. Some proposed
1579 heuristics for ELF include:
1581 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1582 program will be doing dynamic loading, which will likely
1583 need the shared libgcc.
1585 (2) If "-ldl", then it's also a fair bet that we're doing
1588 (3) For each ET_DYN we're linking against (either through -lfoo
1589 or /some/path/foo.so), check to see whether it or one of
1590 its dependencies depends on a shared libgcc.
1594 If the runtime is fixed to look for program headers instead
1595 of calling __register_frame_info at all, for each object,
1596 use the shared libgcc if any EH symbol referenced.
1598 If crtstuff is fixed to not invoke __register_frame_info
1599 automatically, for each object, use the shared libgcc if
1600 any non-empty unwind section found.
1602 Doing any of this probably requires invoking an external program to
1603 do the actual object file scanning. */
1605 const char *p
= libgcc_spec
;
1608 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1609 when given the proper command line arguments. */
1612 if (in_sep
&& *p
== '-' && strncmp (p
, "-lgcc", 5) == 0)
1614 init_gcc_specs (&obstack
,
1616 #ifdef USE_LIBUNWIND_EXCEPTIONS
1622 #ifdef USE_LIBUNWIND_EXCEPTIONS
1623 # ifdef HAVE_LD_STATIC_DYNAMIC
1624 " %{!static:" LD_STATIC_OPTION
"} -lunwind"
1625 " %{!static:" LD_DYNAMIC_OPTION
"}"
1635 else if (in_sep
&& *p
== 'l' && strncmp (p
, "libgcc.a%s", 10) == 0)
1637 /* Ug. We don't know shared library extensions. Hope that
1638 systems that use this form don't do shared libraries. */
1639 init_gcc_specs (&obstack
,
1643 #ifdef USE_LIBUNWIND_EXCEPTIONS
1652 obstack_1grow (&obstack
, *p
);
1653 in_sep
= (*p
== ' ');
1658 obstack_1grow (&obstack
, '\0');
1659 libgcc_spec
= XOBFINISH (&obstack
, const char *);
1662 #ifdef USE_AS_TRADITIONAL_FORMAT
1663 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1665 static const char tf
[] = "--traditional-format ";
1666 obstack_grow (&obstack
, tf
, sizeof (tf
) - 1);
1667 obstack_grow0 (&obstack
, asm_spec
, strlen (asm_spec
));
1668 asm_spec
= XOBFINISH (&obstack
, const char *);
1672 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \
1673 defined LINKER_HASH_STYLE
1674 # ifdef LINK_BUILDID_SPEC
1675 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1676 obstack_grow (&obstack
, LINK_BUILDID_SPEC
, sizeof (LINK_BUILDID_SPEC
) - 1);
1678 # ifdef LINK_EH_SPEC
1679 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1680 obstack_grow (&obstack
, LINK_EH_SPEC
, sizeof (LINK_EH_SPEC
) - 1);
1682 # ifdef LINKER_HASH_STYLE
1683 /* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had
1686 static const char hash_style
[] = "--hash-style=";
1687 obstack_grow (&obstack
, hash_style
, sizeof (hash_style
) - 1);
1688 obstack_grow (&obstack
, LINKER_HASH_STYLE
, sizeof (LINKER_HASH_STYLE
) - 1);
1689 obstack_1grow (&obstack
, ' ');
1692 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
1693 link_spec
= XOBFINISH (&obstack
, const char *);
1699 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1700 removed; If the spec starts with a + then SPEC is added to the end of the
1704 set_spec (const char *name
, const char *spec
, bool user_p
)
1706 struct spec_list
*sl
;
1707 const char *old_spec
;
1708 int name_len
= strlen (name
);
1711 /* If this is the first call, initialize the statically allocated specs. */
1714 struct spec_list
*next
= (struct spec_list
*) 0;
1715 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1717 sl
= &static_specs
[i
];
1724 /* See if the spec already exists. */
1725 for (sl
= specs
; sl
; sl
= sl
->next
)
1726 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, name
))
1731 /* Not found - make it. */
1732 sl
= XNEW (struct spec_list
);
1733 sl
->name
= xstrdup (name
);
1734 sl
->name_len
= name_len
;
1735 sl
->ptr_spec
= &sl
->ptr
;
1737 *(sl
->ptr_spec
) = "";
1742 old_spec
= *(sl
->ptr_spec
);
1743 *(sl
->ptr_spec
) = ((spec
[0] == '+' && ISSPACE ((unsigned char)spec
[1]))
1744 ? concat (old_spec
, spec
+ 1, NULL
)
1749 fnotice (stderr
, "Setting spec %s to '%s'\n\n", name
, *(sl
->ptr_spec
));
1752 /* Free the old spec. */
1753 if (old_spec
&& sl
->alloc_p
)
1754 free (CONST_CAST (char *, old_spec
));
1756 sl
->user_p
= user_p
;
1760 /* Accumulate a command (program name and args), and run it. */
1762 typedef const char *const_char_p
; /* For DEF_VEC_P. */
1764 /* Vector of pointers to arguments in the current line of specifications. */
1766 static vec
<const_char_p
> argbuf
;
1768 /* Were the options -c, -S or -E passed. */
1769 static int have_c
= 0;
1771 /* Was the option -o passed. */
1772 static int have_o
= 0;
1774 /* Pointer to output file name passed in with -o. */
1775 static const char *output_file
= 0;
1777 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1778 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1781 static struct temp_name
{
1782 const char *suffix
; /* suffix associated with the code. */
1783 int length
; /* strlen (suffix). */
1784 int unique
; /* Indicates whether %g or %u/%U was used. */
1785 const char *filename
; /* associated filename. */
1786 int filename_length
; /* strlen (filename). */
1787 struct temp_name
*next
;
1790 /* Number of commands executed so far. */
1792 static int execution_count
;
1794 /* Number of commands that exited with a signal. */
1796 static int signal_count
;
1798 /* Allocate the argument vector. */
1806 /* Clear out the vector of arguments (after a command is executed). */
1811 argbuf
.truncate (0);
1814 /* Add one argument to the vector at the end.
1815 This is done when a space is seen or at the end of the line.
1816 If DELETE_ALWAYS is nonzero, the arg is a filename
1817 and the file should be deleted eventually.
1818 If DELETE_FAILURE is nonzero, the arg is a filename
1819 and the file should be deleted if this compilation fails. */
1822 store_arg (const char *arg
, int delete_always
, int delete_failure
)
1824 argbuf
.safe_push (arg
);
1826 if (delete_always
|| delete_failure
)
1829 /* If the temporary file we should delete is specified as
1830 part of a joined argument extract the filename. */
1832 && (p
= strrchr (arg
, '=')))
1834 record_temp_file (arg
, delete_always
, delete_failure
);
1838 /* Load specs from a file name named FILENAME, replacing occurrences of
1839 various different types of line-endings, \r\n, \n\r and just \r, with
1843 load_specs (const char *filename
)
1847 struct stat statbuf
;
1854 fnotice (stderr
, "Reading specs from %s\n", filename
);
1856 /* Open and stat the file. */
1857 desc
= open (filename
, O_RDONLY
, 0);
1859 pfatal_with_name (filename
);
1860 if (stat (filename
, &statbuf
) < 0)
1861 pfatal_with_name (filename
);
1863 /* Read contents of file into BUFFER. */
1864 buffer
= XNEWVEC (char, statbuf
.st_size
+ 1);
1865 readlen
= read (desc
, buffer
, (unsigned) statbuf
.st_size
);
1867 pfatal_with_name (filename
);
1868 buffer
[readlen
] = 0;
1871 specs
= XNEWVEC (char, readlen
+ 1);
1873 for (buffer_p
= buffer
; buffer_p
&& *buffer_p
; buffer_p
++)
1879 if (buffer_p
> buffer
&& *(buffer_p
- 1) == '\n') /* \n\r */
1881 else if (*(buffer_p
+ 1) == '\n') /* \r\n */
1895 /* Read compilation specs from a file named FILENAME,
1896 replacing the default ones.
1898 A suffix which starts with `*' is a definition for
1899 one of the machine-specific sub-specs. The "suffix" should be
1900 *asm, *cc1, *cpp, *link, *startfile, etc.
1901 The corresponding spec is stored in asm_spec, etc.,
1902 rather than in the `compilers' vector.
1904 Anything invalid in the file is a fatal error. */
1907 read_specs (const char *filename
, bool main_p
, bool user_p
)
1912 buffer
= load_specs (filename
);
1914 /* Scan BUFFER for specs, putting them in the vector. */
1920 char *in
, *out
, *p1
, *p2
, *p3
;
1922 /* Advance P in BUFFER to the next nonblank nocomment line. */
1923 p
= skip_whitespace (p
);
1927 /* Is this a special command that starts with '%'? */
1928 /* Don't allow this for the main specs file, since it would
1929 encourage people to overwrite it. */
1930 if (*p
== '%' && !main_p
)
1933 while (*p
&& *p
!= '\n')
1939 if (!strncmp (p1
, "%include", sizeof ("%include") - 1)
1940 && (p1
[sizeof "%include" - 1] == ' '
1941 || p1
[sizeof "%include" - 1] == '\t'))
1945 p1
+= sizeof ("%include");
1946 while (*p1
== ' ' || *p1
== '\t')
1949 if (*p1
++ != '<' || p
[-2] != '>')
1950 fatal_error (input_location
,
1951 "specs %%include syntax malformed after "
1953 (long) (p1
- buffer
+ 1));
1956 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1957 read_specs (new_filename
? new_filename
: p1
, false, user_p
);
1960 else if (!strncmp (p1
, "%include_noerr", sizeof "%include_noerr" - 1)
1961 && (p1
[sizeof "%include_noerr" - 1] == ' '
1962 || p1
[sizeof "%include_noerr" - 1] == '\t'))
1966 p1
+= sizeof "%include_noerr";
1967 while (*p1
== ' ' || *p1
== '\t')
1970 if (*p1
++ != '<' || p
[-2] != '>')
1971 fatal_error (input_location
,
1972 "specs %%include syntax malformed after "
1974 (long) (p1
- buffer
+ 1));
1977 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1979 read_specs (new_filename
, false, user_p
);
1980 else if (verbose_flag
)
1981 fnotice (stderr
, "could not find specs file %s\n", p1
);
1984 else if (!strncmp (p1
, "%rename", sizeof "%rename" - 1)
1985 && (p1
[sizeof "%rename" - 1] == ' '
1986 || p1
[sizeof "%rename" - 1] == '\t'))
1989 struct spec_list
*sl
;
1990 struct spec_list
*newsl
;
1992 /* Get original name. */
1993 p1
+= sizeof "%rename";
1994 while (*p1
== ' ' || *p1
== '\t')
1997 if (! ISALPHA ((unsigned char) *p1
))
1998 fatal_error (input_location
,
1999 "specs %%rename syntax malformed after "
2001 (long) (p1
- buffer
));
2004 while (*p2
&& !ISSPACE ((unsigned char) *p2
))
2007 if (*p2
!= ' ' && *p2
!= '\t')
2008 fatal_error (input_location
,
2009 "specs %%rename syntax malformed after "
2011 (long) (p2
- buffer
));
2015 while (*p2
== ' ' || *p2
== '\t')
2018 if (! ISALPHA ((unsigned char) *p2
))
2019 fatal_error (input_location
,
2020 "specs %%rename syntax malformed after "
2022 (long) (p2
- buffer
));
2024 /* Get new spec name. */
2026 while (*p3
&& !ISSPACE ((unsigned char) *p3
))
2030 fatal_error (input_location
,
2031 "specs %%rename syntax malformed after "
2033 (long) (p3
- buffer
));
2036 for (sl
= specs
; sl
; sl
= sl
->next
)
2037 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, p1
))
2041 fatal_error (input_location
,
2042 "specs %s spec was not found to be renamed", p1
);
2044 if (strcmp (p1
, p2
) == 0)
2047 for (newsl
= specs
; newsl
; newsl
= newsl
->next
)
2048 if (strcmp (newsl
->name
, p2
) == 0)
2049 fatal_error (input_location
,
2050 "%s: attempt to rename spec %qs to "
2051 "already defined spec %qs",
2056 fnotice (stderr
, "rename spec %s to %s\n", p1
, p2
);
2058 fnotice (stderr
, "spec is '%s'\n\n", *(sl
->ptr_spec
));
2062 set_spec (p2
, *(sl
->ptr_spec
), user_p
);
2064 free (CONST_CAST (char *, *(sl
->ptr_spec
)));
2066 *(sl
->ptr_spec
) = "";
2071 fatal_error (input_location
,
2072 "specs unknown %% command after %ld characters",
2073 (long) (p1
- buffer
));
2076 /* Find the colon that should end the suffix. */
2078 while (*p1
&& *p1
!= ':' && *p1
!= '\n')
2081 /* The colon shouldn't be missing. */
2083 fatal_error (input_location
,
2084 "specs file malformed after %ld characters",
2085 (long) (p1
- buffer
));
2087 /* Skip back over trailing whitespace. */
2089 while (p2
> buffer
&& (p2
[-1] == ' ' || p2
[-1] == '\t'))
2092 /* Copy the suffix to a string. */
2093 suffix
= save_string (p
, p2
- p
);
2094 /* Find the next line. */
2095 p
= skip_whitespace (p1
+ 1);
2097 fatal_error (input_location
,
2098 "specs file malformed after %ld characters",
2099 (long) (p
- buffer
));
2102 /* Find next blank line or end of string. */
2103 while (*p1
&& !(*p1
== '\n' && (p1
[1] == '\n' || p1
[1] == '\0')))
2106 /* Specs end at the blank line and do not include the newline. */
2107 spec
= save_string (p
, p1
- p
);
2110 /* Delete backslash-newline sequences from the spec. */
2115 if (in
[0] == '\\' && in
[1] == '\n')
2117 else if (in
[0] == '#')
2118 while (*in
&& *in
!= '\n')
2126 if (suffix
[0] == '*')
2128 if (! strcmp (suffix
, "*link_command"))
2129 link_command_spec
= spec
;
2131 set_spec (suffix
+ 1, spec
, user_p
);
2135 /* Add this pair to the vector. */
2137 = XRESIZEVEC (struct compiler
, compilers
, n_compilers
+ 2);
2139 compilers
[n_compilers
].suffix
= suffix
;
2140 compilers
[n_compilers
].spec
= spec
;
2142 memset (&compilers
[n_compilers
], 0, sizeof compilers
[n_compilers
]);
2146 link_command_spec
= spec
;
2149 if (link_command_spec
== 0)
2150 fatal_error (input_location
, "spec file has no spec for linking");
2153 /* Record the names of temporary files we tell compilers to write,
2154 and delete them at the end of the run. */
2156 /* This is the common prefix we use to make temp file names.
2157 It is chosen once for each run of this program.
2158 It is substituted into a spec by %g or %j.
2159 Thus, all temp file names contain this prefix.
2160 In practice, all temp file names start with this prefix.
2162 This prefix comes from the envvar TMPDIR if it is defined;
2163 otherwise, from the P_tmpdir macro if that is defined;
2164 otherwise, in /usr/tmp or /tmp;
2165 or finally the current directory if all else fails. */
2167 static const char *temp_filename
;
2169 /* Length of the prefix. */
2171 static int temp_filename_length
;
2173 /* Define the list of temporary files to delete. */
2178 struct temp_file
*next
;
2181 /* Queue of files to delete on success or failure of compilation. */
2182 static struct temp_file
*always_delete_queue
;
2183 /* Queue of files to delete on failure of compilation. */
2184 static struct temp_file
*failure_delete_queue
;
2186 /* Record FILENAME as a file to be deleted automatically.
2187 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2188 otherwise delete it in any case.
2189 FAIL_DELETE nonzero means delete it if a compilation step fails;
2190 otherwise delete it in any case. */
2193 record_temp_file (const char *filename
, int always_delete
, int fail_delete
)
2195 char *const name
= xstrdup (filename
);
2199 struct temp_file
*temp
;
2200 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
2201 if (! filename_cmp (name
, temp
->name
))
2204 temp
= XNEW (struct temp_file
);
2205 temp
->next
= always_delete_queue
;
2207 always_delete_queue
= temp
;
2214 struct temp_file
*temp
;
2215 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
2216 if (! filename_cmp (name
, temp
->name
))
2222 temp
= XNEW (struct temp_file
);
2223 temp
->next
= failure_delete_queue
;
2225 failure_delete_queue
= temp
;
2231 /* Delete all the temporary files whose names we previously recorded. */
2233 #ifndef DELETE_IF_ORDINARY
2234 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2237 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2238 if (unlink (NAME) < 0) \
2240 perror_with_name (NAME); \
2245 delete_if_ordinary (const char *name
)
2251 printf ("Delete %s? (y or n) ", name
);
2255 while ((c
= getchar ()) != '\n' && c
!= EOF
)
2258 if (i
== 'y' || i
== 'Y')
2260 DELETE_IF_ORDINARY (name
, st
, verbose_flag
);
2264 delete_temp_files (void)
2266 struct temp_file
*temp
;
2268 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
2269 delete_if_ordinary (temp
->name
);
2270 always_delete_queue
= 0;
2273 /* Delete all the files to be deleted on error. */
2276 delete_failure_queue (void)
2278 struct temp_file
*temp
;
2280 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
2281 delete_if_ordinary (temp
->name
);
2285 clear_failure_queue (void)
2287 failure_delete_queue
= 0;
2290 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2292 If DO_MULTI is true iterate over the paths twice, first with multilib
2293 suffix then without, otherwise iterate over the paths once without
2294 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2295 to avoid visiting the same path twice, but we could do better. For
2296 instance, /usr/lib/../lib is considered different from /usr/lib.
2297 At least EXTRA_SPACE chars past the end of the path passed to
2298 CALLBACK are available for use by the callback.
2299 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2301 Returns the value returned by CALLBACK. */
2304 for_each_path (const struct path_prefix
*paths
,
2307 void *(*callback
) (char *, void *),
2308 void *callback_info
)
2310 struct prefix_list
*pl
;
2311 const char *multi_dir
= NULL
;
2312 const char *multi_os_dir
= NULL
;
2313 const char *multiarch_suffix
= NULL
;
2314 const char *multi_suffix
;
2315 const char *just_multi_suffix
;
2318 bool skip_multi_dir
= false;
2319 bool skip_multi_os_dir
= false;
2321 multi_suffix
= machine_suffix
;
2322 just_multi_suffix
= just_machine_suffix
;
2323 if (do_multi
&& multilib_dir
&& strcmp (multilib_dir
, ".") != 0)
2325 multi_dir
= concat (multilib_dir
, dir_separator_str
, NULL
);
2326 multi_suffix
= concat (multi_suffix
, multi_dir
, NULL
);
2327 just_multi_suffix
= concat (just_multi_suffix
, multi_dir
, NULL
);
2329 if (do_multi
&& multilib_os_dir
&& strcmp (multilib_os_dir
, ".") != 0)
2330 multi_os_dir
= concat (multilib_os_dir
, dir_separator_str
, NULL
);
2332 multiarch_suffix
= concat (multiarch_dir
, dir_separator_str
, NULL
);
2336 size_t multi_dir_len
= 0;
2337 size_t multi_os_dir_len
= 0;
2338 size_t multiarch_len
= 0;
2340 size_t just_suffix_len
;
2344 multi_dir_len
= strlen (multi_dir
);
2346 multi_os_dir_len
= strlen (multi_os_dir
);
2347 if (multiarch_suffix
)
2348 multiarch_len
= strlen (multiarch_suffix
);
2349 suffix_len
= strlen (multi_suffix
);
2350 just_suffix_len
= strlen (just_multi_suffix
);
2354 len
= paths
->max_len
+ extra_space
+ 1;
2355 len
+= MAX (MAX (suffix_len
, multi_os_dir_len
), multiarch_len
);
2356 path
= XNEWVEC (char, len
);
2359 for (pl
= paths
->plist
; pl
!= 0; pl
= pl
->next
)
2361 len
= strlen (pl
->prefix
);
2362 memcpy (path
, pl
->prefix
, len
);
2364 /* Look first in MACHINE/VERSION subdirectory. */
2365 if (!skip_multi_dir
)
2367 memcpy (path
+ len
, multi_suffix
, suffix_len
+ 1);
2368 ret
= callback (path
, callback_info
);
2373 /* Some paths are tried with just the machine (ie. target)
2374 subdir. This is used for finding as, ld, etc. */
2376 && pl
->require_machine_suffix
== 2)
2378 memcpy (path
+ len
, just_multi_suffix
, just_suffix_len
+ 1);
2379 ret
= callback (path
, callback_info
);
2384 /* Now try the multiarch path. */
2386 && !pl
->require_machine_suffix
&& multiarch_dir
)
2388 memcpy (path
+ len
, multiarch_suffix
, multiarch_len
+ 1);
2389 ret
= callback (path
, callback_info
);
2394 /* Now try the base path. */
2395 if (!pl
->require_machine_suffix
2396 && !(pl
->os_multilib
? skip_multi_os_dir
: skip_multi_dir
))
2398 const char *this_multi
;
2399 size_t this_multi_len
;
2401 if (pl
->os_multilib
)
2403 this_multi
= multi_os_dir
;
2404 this_multi_len
= multi_os_dir_len
;
2408 this_multi
= multi_dir
;
2409 this_multi_len
= multi_dir_len
;
2413 memcpy (path
+ len
, this_multi
, this_multi_len
+ 1);
2417 ret
= callback (path
, callback_info
);
2425 if (multi_dir
== NULL
&& multi_os_dir
== NULL
)
2428 /* Run through the paths again, this time without multilibs.
2429 Don't repeat any we have already seen. */
2432 free (CONST_CAST (char *, multi_dir
));
2434 free (CONST_CAST (char *, multi_suffix
));
2435 multi_suffix
= machine_suffix
;
2436 free (CONST_CAST (char *, just_multi_suffix
));
2437 just_multi_suffix
= just_machine_suffix
;
2440 skip_multi_dir
= true;
2443 free (CONST_CAST (char *, multi_os_dir
));
2444 multi_os_dir
= NULL
;
2447 skip_multi_os_dir
= true;
2452 free (CONST_CAST (char *, multi_dir
));
2453 free (CONST_CAST (char *, multi_suffix
));
2454 free (CONST_CAST (char *, just_multi_suffix
));
2457 free (CONST_CAST (char *, multi_os_dir
));
2463 /* Callback for build_search_list. Adds path to obstack being built. */
2465 struct add_to_obstack_info
{
2472 add_to_obstack (char *path
, void *data
)
2474 struct add_to_obstack_info
*info
= (struct add_to_obstack_info
*) data
;
2476 if (info
->check_dir
&& !is_directory (path
, false))
2479 if (!info
->first_time
)
2480 obstack_1grow (info
->ob
, PATH_SEPARATOR
);
2482 obstack_grow (info
->ob
, path
, strlen (path
));
2484 info
->first_time
= false;
2488 /* Add or change the value of an environment variable, outputting the
2489 change to standard error if in verbose mode. */
2491 xputenv (const char *string
)
2494 fnotice (stderr
, "%s\n", string
);
2495 putenv (CONST_CAST (char *, string
));
2498 /* Build a list of search directories from PATHS.
2499 PREFIX is a string to prepend to the list.
2500 If CHECK_DIR_P is true we ensure the directory exists.
2501 If DO_MULTI is true, multilib paths are output first, then
2503 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2504 It is also used by the --print-search-dirs flag. */
2507 build_search_list (const struct path_prefix
*paths
, const char *prefix
,
2508 bool check_dir
, bool do_multi
)
2510 struct add_to_obstack_info info
;
2512 info
.ob
= &collect_obstack
;
2513 info
.check_dir
= check_dir
;
2514 info
.first_time
= true;
2516 obstack_grow (&collect_obstack
, prefix
, strlen (prefix
));
2517 obstack_1grow (&collect_obstack
, '=');
2519 for_each_path (paths
, do_multi
, 0, add_to_obstack
, &info
);
2521 obstack_1grow (&collect_obstack
, '\0');
2522 return XOBFINISH (&collect_obstack
, char *);
2525 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2529 putenv_from_prefixes (const struct path_prefix
*paths
, const char *env_var
,
2532 xputenv (build_search_list (paths
, env_var
, true, do_multi
));
2535 /* Check whether NAME can be accessed in MODE. This is like access,
2536 except that it never considers directories to be executable. */
2539 access_check (const char *name
, int mode
)
2545 if (stat (name
, &st
) < 0
2546 || S_ISDIR (st
.st_mode
))
2550 return access (name
, mode
);
2553 /* Callback for find_a_file. Appends the file name to the directory
2554 path. If the resulting file exists in the right mode, return the
2555 full pathname to the file. */
2557 struct file_at_path_info
{
2566 file_at_path (char *path
, void *data
)
2568 struct file_at_path_info
*info
= (struct file_at_path_info
*) data
;
2569 size_t len
= strlen (path
);
2571 memcpy (path
+ len
, info
->name
, info
->name_len
);
2572 len
+= info
->name_len
;
2574 /* Some systems have a suffix for executable files.
2575 So try appending that first. */
2576 if (info
->suffix_len
)
2578 memcpy (path
+ len
, info
->suffix
, info
->suffix_len
+ 1);
2579 if (access_check (path
, info
->mode
) == 0)
2584 if (access_check (path
, info
->mode
) == 0)
2590 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2591 access to check permissions. If DO_MULTI is true, search multilib
2592 paths then non-multilib paths, otherwise do not search multilib paths.
2593 Return 0 if not found, otherwise return its name, allocated with malloc. */
2596 find_a_file (const struct path_prefix
*pprefix
, const char *name
, int mode
,
2599 struct file_at_path_info info
;
2601 #ifdef DEFAULT_ASSEMBLER
2602 if (! strcmp (name
, "as") && access (DEFAULT_ASSEMBLER
, mode
) == 0)
2603 return xstrdup (DEFAULT_ASSEMBLER
);
2606 #ifdef DEFAULT_LINKER
2607 if (! strcmp (name
, "ld") && access (DEFAULT_LINKER
, mode
) == 0)
2608 return xstrdup (DEFAULT_LINKER
);
2611 /* Determine the filename to execute (special case for absolute paths). */
2613 if (IS_ABSOLUTE_PATH (name
))
2615 if (access (name
, mode
) == 0)
2616 return xstrdup (name
);
2622 info
.suffix
= (mode
& X_OK
) != 0 ? HOST_EXECUTABLE_SUFFIX
: "";
2623 info
.name_len
= strlen (info
.name
);
2624 info
.suffix_len
= strlen (info
.suffix
);
2627 return (char*) for_each_path (pprefix
, do_multi
,
2628 info
.name_len
+ info
.suffix_len
,
2629 file_at_path
, &info
);
2632 /* Ranking of prefixes in the sort list. -B prefixes are put before
2635 enum path_prefix_priority
2637 PREFIX_PRIORITY_B_OPT
,
2638 PREFIX_PRIORITY_LAST
2641 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2642 order according to PRIORITY. Within each PRIORITY, new entries are
2645 If WARN is nonzero, we will warn if no file is found
2646 through this prefix. WARN should point to an int
2647 which will be set to 1 if this entry is used.
2649 COMPONENT is the value to be passed to update_path.
2651 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2652 the complete value of machine_suffix.
2653 2 means try both machine_suffix and just_machine_suffix. */
2656 add_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2657 const char *component
, /* enum prefix_priority */ int priority
,
2658 int require_machine_suffix
, int os_multilib
)
2660 struct prefix_list
*pl
, **prev
;
2663 for (prev
= &pprefix
->plist
;
2664 (*prev
) != NULL
&& (*prev
)->priority
<= priority
;
2665 prev
= &(*prev
)->next
)
2668 /* Keep track of the longest prefix. */
2670 prefix
= update_path (prefix
, component
);
2671 len
= strlen (prefix
);
2672 if (len
> pprefix
->max_len
)
2673 pprefix
->max_len
= len
;
2675 pl
= XNEW (struct prefix_list
);
2676 pl
->prefix
= prefix
;
2677 pl
->require_machine_suffix
= require_machine_suffix
;
2678 pl
->priority
= priority
;
2679 pl
->os_multilib
= os_multilib
;
2681 /* Insert after PREV. */
2686 /* Same as add_prefix, but prepending target_system_root to prefix. */
2687 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2689 add_sysrooted_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2690 const char *component
,
2691 /* enum prefix_priority */ int priority
,
2692 int require_machine_suffix
, int os_multilib
)
2694 if (!IS_ABSOLUTE_PATH (prefix
))
2695 fatal_error (input_location
, "system path %qs is not absolute", prefix
);
2697 if (target_system_root
)
2699 char *sysroot_no_trailing_dir_separator
= xstrdup (target_system_root
);
2700 size_t sysroot_len
= strlen (target_system_root
);
2703 && target_system_root
[sysroot_len
- 1] == DIR_SEPARATOR
)
2704 sysroot_no_trailing_dir_separator
[sysroot_len
- 1] = '\0';
2706 if (target_sysroot_suffix
)
2707 prefix
= concat (sysroot_no_trailing_dir_separator
,
2708 target_sysroot_suffix
, prefix
, NULL
);
2710 prefix
= concat (sysroot_no_trailing_dir_separator
, prefix
, NULL
);
2712 free (sysroot_no_trailing_dir_separator
);
2714 /* We have to override this because GCC's notion of sysroot
2715 moves along with GCC. */
2719 add_prefix (pprefix
, prefix
, component
, priority
,
2720 require_machine_suffix
, os_multilib
);
2723 /* Execute the command specified by the arguments on the current line of spec.
2724 When using pipes, this includes several piped-together commands
2725 with `|' between them.
2727 Return 0 if successful, -1 if failed. */
2733 int n_commands
; /* # of command. */
2735 struct pex_obj
*pex
;
2738 const char *prog
; /* program name. */
2739 const char **argv
; /* vector of args. */
2743 struct command
*commands
; /* each command buffer with above info. */
2745 gcc_assert (!processing_spec_function
);
2749 string
= find_a_file (&exec_prefixes
,
2750 argbuf
[0], X_OK
, false);
2753 insert_wrapper (wrapper_string
);
2756 /* Count # of piped commands. */
2757 for (n_commands
= 1, i
= 0; argbuf
.iterate (i
, &arg
); i
++)
2758 if (strcmp (arg
, "|") == 0)
2761 /* Get storage for each command. */
2762 commands
= (struct command
*) alloca (n_commands
* sizeof (struct command
));
2764 /* Split argbuf into its separate piped processes,
2765 and record info about each one.
2766 Also search for the programs that are to be run. */
2768 argbuf
.safe_push (0);
2770 commands
[0].prog
= argbuf
[0]; /* first command. */
2771 commands
[0].argv
= argbuf
.address ();
2773 if (!wrapper_string
)
2775 string
= find_a_file (&exec_prefixes
, commands
[0].prog
, X_OK
, false);
2776 commands
[0].argv
[0] = (string
) ? string
: commands
[0].argv
[0];
2779 for (n_commands
= 1, i
= 0; argbuf
.iterate (i
, &arg
); i
++)
2780 if (arg
&& strcmp (arg
, "|") == 0)
2781 { /* each command. */
2782 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2783 fatal_error (input_location
, "-pipe not supported");
2785 argbuf
[i
] = 0; /* Termination of
2787 commands
[n_commands
].prog
= argbuf
[i
+ 1];
2788 commands
[n_commands
].argv
2789 = &(argbuf
.address ())[i
+ 1];
2790 string
= find_a_file (&exec_prefixes
, commands
[n_commands
].prog
,
2793 commands
[n_commands
].argv
[0] = string
;
2797 /* If -v, print what we are about to do, and maybe query. */
2801 /* For help listings, put a blank line between sub-processes. */
2802 if (print_help_list
)
2803 fputc ('\n', stderr
);
2805 /* Print each piped command as a separate line. */
2806 for (i
= 0; i
< n_commands
; i
++)
2808 const char *const *j
;
2810 if (verbose_only_flag
)
2812 for (j
= commands
[i
].argv
; *j
; j
++)
2815 for (p
= *j
; *p
; ++p
)
2816 if (!ISALNUM ((unsigned char) *p
)
2817 && *p
!= '_' && *p
!= '/' && *p
!= '-' && *p
!= '.')
2821 fprintf (stderr
, " \"");
2822 for (p
= *j
; *p
; ++p
)
2824 if (*p
== '"' || *p
== '\\' || *p
== '$')
2825 fputc ('\\', stderr
);
2828 fputc ('"', stderr
);
2830 /* If it's empty, print "". */
2832 fprintf (stderr
, " \"\"");
2834 fprintf (stderr
, " %s", *j
);
2838 for (j
= commands
[i
].argv
; *j
; j
++)
2839 /* If it's empty, print "". */
2841 fprintf (stderr
, " \"\"");
2843 fprintf (stderr
, " %s", *j
);
2845 /* Print a pipe symbol after all but the last command. */
2846 if (i
+ 1 != n_commands
)
2847 fprintf (stderr
, " |");
2848 fprintf (stderr
, "\n");
2851 if (verbose_only_flag
!= 0)
2853 /* verbose_only_flag should act as if the spec was
2854 executed, so increment execution_count before
2855 returning. This prevents spurious warnings about
2856 unused linker input files, etc. */
2861 fnotice (stderr
, "\nGo ahead? (y or n) ");
2865 while (getchar () != '\n')
2868 if (i
!= 'y' && i
!= 'Y')
2873 #ifdef ENABLE_VALGRIND_CHECKING
2874 /* Run the each command through valgrind. To simplify prepending the
2875 path to valgrind and the option "-q" (for quiet operation unless
2876 something triggers), we allocate a separate argv array. */
2878 for (i
= 0; i
< n_commands
; i
++)
2884 for (argc
= 0; commands
[i
].argv
[argc
] != NULL
; argc
++)
2887 argv
= XALLOCAVEC (const char *, argc
+ 3);
2889 argv
[0] = VALGRIND_PATH
;
2891 for (j
= 2; j
< argc
+ 2; j
++)
2892 argv
[j
] = commands
[i
].argv
[j
- 2];
2895 commands
[i
].argv
= argv
;
2896 commands
[i
].prog
= argv
[0];
2900 /* Run each piped subprocess. */
2902 pex
= pex_init (PEX_USE_PIPES
| ((report_times
|| report_times_to_file
)
2903 ? PEX_RECORD_TIMES
: 0),
2904 progname
, temp_filename
);
2906 fatal_error (input_location
, "pex_init failed: %m");
2908 for (i
= 0; i
< n_commands
; i
++)
2912 const char *string
= commands
[i
].argv
[0];
2914 errmsg
= pex_run (pex
,
2915 ((i
+ 1 == n_commands
? PEX_LAST
: 0)
2916 | (string
== commands
[i
].prog
? PEX_SEARCH
: 0)),
2917 string
, CONST_CAST (char **, commands
[i
].argv
),
2922 fatal_error (input_location
, errmsg
);
2926 pfatal_with_name (errmsg
);
2930 if (i
&& string
!= commands
[i
].prog
)
2931 free (CONST_CAST (char *, string
));
2936 /* Wait for all the subprocesses to finish. */
2940 struct pex_time
*times
= NULL
;
2943 statuses
= (int *) alloca (n_commands
* sizeof (int));
2944 if (!pex_get_status (pex
, n_commands
, statuses
))
2945 fatal_error (input_location
, "failed to get exit status: %m");
2947 if (report_times
|| report_times_to_file
)
2949 times
= (struct pex_time
*) alloca (n_commands
* sizeof (struct pex_time
));
2950 if (!pex_get_times (pex
, n_commands
, times
))
2951 fatal_error (input_location
, "failed to get process times: %m");
2956 for (i
= 0; i
< n_commands
; ++i
)
2958 int status
= statuses
[i
];
2960 if (WIFSIGNALED (status
))
2963 /* SIGPIPE is a special case. It happens in -pipe mode
2964 when the compiler dies before the preprocessor is done,
2965 or the assembler dies before the compiler is done.
2966 There's generally been an error already, and this is
2967 just fallout. So don't generate another error unless
2968 we would otherwise have succeeded. */
2969 if (WTERMSIG (status
) == SIGPIPE
2970 && (signal_count
|| greatest_status
>= MIN_FATAL_STATUS
))
2977 internal_error_no_backtrace ("%s (program %s)",
2978 strsignal (WTERMSIG (status
)),
2981 else if (WIFEXITED (status
)
2982 && WEXITSTATUS (status
) >= MIN_FATAL_STATUS
)
2984 /* For ICEs in cc1, cc1obj, cc1plus see if it is
2985 reproducible or not. */
2988 && WEXITSTATUS (status
) == ICE_EXIT_CODE
2990 && (p
= strrchr (commands
[0].argv
[0], DIR_SEPARATOR
))
2991 && ! strncmp (p
+ 1, "cc1", 3))
2992 try_generate_repro (commands
[0].argv
);
2993 if (WEXITSTATUS (status
) > greatest_status
)
2994 greatest_status
= WEXITSTATUS (status
);
2998 if (report_times
|| report_times_to_file
)
3000 struct pex_time
*pt
= ×
[i
];
3003 ut
= ((double) pt
->user_seconds
3004 + (double) pt
->user_microseconds
/ 1.0e6
);
3005 st
= ((double) pt
->system_seconds
3006 + (double) pt
->system_microseconds
/ 1.0e6
);
3011 fnotice (stderr
, "# %s %.2f %.2f\n",
3012 commands
[i
].prog
, ut
, st
);
3014 if (report_times_to_file
)
3017 const char *const *j
;
3019 fprintf (report_times_to_file
, "%g %g", ut
, st
);
3021 for (j
= &commands
[i
].prog
; *j
; j
= &commands
[i
].argv
[++c
])
3024 for (p
= *j
; *p
; ++p
)
3025 if (*p
== '"' || *p
== '\\' || *p
== '$'
3031 fprintf (report_times_to_file
, " \"");
3032 for (p
= *j
; *p
; ++p
)
3034 if (*p
== '"' || *p
== '\\' || *p
== '$')
3035 fputc ('\\', report_times_to_file
);
3036 fputc (*p
, report_times_to_file
);
3038 fputc ('"', report_times_to_file
);
3041 fprintf (report_times_to_file
, " %s", *j
);
3044 fputc ('\n', report_times_to_file
);
3050 if (commands
[0].argv
[0] != commands
[0].prog
)
3051 free (CONST_CAST (char *, commands
[0].argv
[0]));
3057 /* Find all the switches given to us
3058 and make a vector describing them.
3059 The elements of the vector are strings, one per switch given.
3060 If a switch uses following arguments, then the `part1' field
3061 is the switch itself and the `args' field
3062 is a null-terminated vector containing the following arguments.
3063 Bits in the `live_cond' field are:
3064 SWITCH_LIVE to indicate this switch is true in a conditional spec.
3065 SWITCH_FALSE to indicate this switch is overridden by a later switch.
3066 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
3067 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
3068 in all do_spec calls afterwards. Used for %<S from self specs.
3069 The `validated' field is nonzero if any spec has looked at this switch;
3070 if it remains zero at the end of the run, it must be meaningless. */
3072 #define SWITCH_LIVE (1 << 0)
3073 #define SWITCH_FALSE (1 << 1)
3074 #define SWITCH_IGNORE (1 << 2)
3075 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
3076 #define SWITCH_KEEP_FOR_GCC (1 << 4)
3082 unsigned int live_cond
;
3088 static struct switchstr
*switches
;
3090 static int n_switches
;
3092 static int n_switches_alloc
;
3094 /* Set to zero if -fcompare-debug is disabled, positive if it's
3095 enabled and we're running the first compilation, negative if it's
3096 enabled and we're running the second compilation. For most of the
3097 time, it's in the range -1..1, but it can be temporarily set to 2
3098 or 3 to indicate that the -fcompare-debug flags didn't come from
3099 the command-line, but rather from the GCC_COMPARE_DEBUG environment
3100 variable, until a synthesized -fcompare-debug flag is added to the
3104 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
3105 int compare_debug_second
;
3107 /* Set to the flags that should be passed to the second compilation in
3108 a -fcompare-debug compilation. */
3109 const char *compare_debug_opt
;
3111 static struct switchstr
*switches_debug_check
[2];
3113 static int n_switches_debug_check
[2];
3115 static int n_switches_alloc_debug_check
[2];
3117 static char *debug_check_temp_file
[2];
3119 /* Language is one of three things:
3121 1) The name of a real programming language.
3122 2) NULL, indicating that no one has figured out
3124 3) '*', indicating that the file should be passed
3129 const char *language
;
3130 struct compiler
*incompiler
;
3135 /* Also a vector of input files specified. */
3137 static struct infile
*infiles
;
3141 static int n_infiles_alloc
;
3143 /* True if multiple input files are being compiled to a single
3146 static bool combine_inputs
;
3148 /* This counts the number of libraries added by lang_specific_driver, so that
3149 we can tell if there were any user supplied any files or libraries. */
3151 static int added_libraries
;
3153 /* And a vector of corresponding output files is made up later. */
3155 const char **outfiles
;
3157 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3159 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
3160 is true if we should look for an executable suffix. DO_OBJ
3161 is true if we should look for an object suffix. */
3164 convert_filename (const char *name
, int do_exe ATTRIBUTE_UNUSED
,
3165 int do_obj ATTRIBUTE_UNUSED
)
3167 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3175 len
= strlen (name
);
3177 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3178 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
3179 if (do_obj
&& len
> 2
3180 && name
[len
- 2] == '.'
3181 && name
[len
- 1] == 'o')
3183 obstack_grow (&obstack
, name
, len
- 2);
3184 obstack_grow0 (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
3185 name
= XOBFINISH (&obstack
, const char *);
3189 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3190 /* If there is no filetype, make it the executable suffix (which includes
3191 the "."). But don't get confused if we have just "-o". */
3192 if (! do_exe
|| TARGET_EXECUTABLE_SUFFIX
[0] == 0 || (len
== 2 && name
[0] == '-'))
3195 for (i
= len
- 1; i
>= 0; i
--)
3196 if (IS_DIR_SEPARATOR (name
[i
]))
3199 for (i
++; i
< len
; i
++)
3203 obstack_grow (&obstack
, name
, len
);
3204 obstack_grow0 (&obstack
, TARGET_EXECUTABLE_SUFFIX
,
3205 strlen (TARGET_EXECUTABLE_SUFFIX
));
3206 name
= XOBFINISH (&obstack
, const char *);
3213 /* Display the command line switches accepted by gcc. */
3217 printf (_("Usage: %s [options] file...\n"), progname
);
3218 fputs (_("Options:\n"), stdout
);
3220 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout
);
3221 fputs (_(" --help Display this information\n"), stdout
);
3222 fputs (_(" --target-help Display target specific command line options\n"), stdout
);
3223 fputs (_(" --help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumented}}[,...]\n"), stdout
);
3224 fputs (_(" Display specific types of command line options\n"), stdout
);
3226 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout
);
3227 fputs (_(" --version Display compiler version information\n"), stdout
);
3228 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout
);
3229 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout
);
3230 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout
);
3231 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout
);
3232 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout
);
3233 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout
);
3234 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout
);
3236 -print-multiarch Display the target's normalized GNU triplet, used as\n\
3237 a component in the library path\n"), stdout
);
3238 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout
);
3240 -print-multi-lib Display the mapping between command line options and\n\
3241 multiple library search directories\n"), stdout
);
3242 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout
);
3243 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout
);
3244 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout
);
3245 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout
);
3246 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout
);
3247 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout
);
3248 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout
);
3249 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout
);
3250 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout
);
3251 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout
);
3252 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout
);
3254 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
3255 prefixes to other gcc components\n"), stdout
);
3256 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout
);
3257 fputs (_(" -time Time the execution of each subprocess\n"), stdout
);
3258 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout
);
3259 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout
);
3261 --sysroot=<directory> Use <directory> as the root directory for headers\n\
3262 and libraries\n"), stdout
);
3263 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout
);
3264 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout
);
3265 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout
);
3266 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout
);
3267 fputs (_(" -S Compile only; do not assemble or link\n"), stdout
);
3268 fputs (_(" -c Compile and assemble, but do not link\n"), stdout
);
3269 fputs (_(" -o <file> Place the output into <file>\n"), stdout
);
3270 fputs (_(" -pie Create a position independent executable\n"), stdout
);
3271 fputs (_(" -shared Create a shared library\n"), stdout
);
3273 -x <language> Specify the language of the following input files\n\
3274 Permissible languages include: c c++ assembler none\n\
3275 'none' means revert to the default behavior of\n\
3276 guessing the language based on the file's extension\n\
3280 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3281 passed on to the various sub-processes invoked by %s. In order to pass\n\
3282 other options on to these processes the -W<letter> options must be used.\n\
3285 /* The rest of the options are displayed by invocations of the various
3290 add_preprocessor_option (const char *option
, int len
)
3292 preprocessor_options
.safe_push (save_string (option
, len
));
3296 add_assembler_option (const char *option
, int len
)
3298 assembler_options
.safe_push (save_string (option
, len
));
3302 add_linker_option (const char *option
, int len
)
3304 linker_options
.safe_push (save_string (option
, len
));
3307 /* Allocate space for an input file in infiles. */
3312 if (n_infiles_alloc
== 0)
3314 n_infiles_alloc
= 16;
3315 infiles
= XNEWVEC (struct infile
, n_infiles_alloc
);
3317 else if (n_infiles_alloc
== n_infiles
)
3319 n_infiles_alloc
*= 2;
3320 infiles
= XRESIZEVEC (struct infile
, infiles
, n_infiles_alloc
);
3324 /* Store an input file with the given NAME and LANGUAGE in
3328 add_infile (const char *name
, const char *language
)
3331 infiles
[n_infiles
].name
= name
;
3332 infiles
[n_infiles
++].language
= language
;
3335 /* Allocate space for a switch in switches. */
3340 if (n_switches_alloc
== 0)
3342 n_switches_alloc
= 16;
3343 switches
= XNEWVEC (struct switchstr
, n_switches_alloc
);
3345 else if (n_switches_alloc
== n_switches
)
3347 n_switches_alloc
*= 2;
3348 switches
= XRESIZEVEC (struct switchstr
, switches
, n_switches_alloc
);
3352 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3353 as validated if VALIDATED and KNOWN if it is an internal switch. */
3356 save_switch (const char *opt
, size_t n_args
, const char *const *args
,
3357 bool validated
, bool known
)
3360 switches
[n_switches
].part1
= opt
+ 1;
3362 switches
[n_switches
].args
= 0;
3365 switches
[n_switches
].args
= XNEWVEC (const char *, n_args
+ 1);
3366 memcpy (switches
[n_switches
].args
, args
, n_args
* sizeof (const char *));
3367 switches
[n_switches
].args
[n_args
] = NULL
;
3370 switches
[n_switches
].live_cond
= 0;
3371 switches
[n_switches
].validated
= validated
;
3372 switches
[n_switches
].known
= known
;
3373 switches
[n_switches
].ordering
= 0;
3377 /* Handle an option DECODED that is unknown to the option-processing
3381 driver_unknown_option_callback (const struct cl_decoded_option
*decoded
)
3383 const char *opt
= decoded
->arg
;
3384 if (opt
[1] == 'W' && opt
[2] == 'n' && opt
[3] == 'o' && opt
[4] == '-'
3385 && !(decoded
->errors
& CL_ERR_NEGATIVE
))
3387 /* Leave unknown -Wno-* options for the compiler proper, to be
3388 diagnosed only if there are warnings. */
3389 save_switch (decoded
->canonical_option
[0],
3390 decoded
->canonical_option_num_elements
- 1,
3391 &decoded
->canonical_option
[1], false, true);
3394 if (decoded
->opt_index
== OPT_SPECIAL_unknown
)
3396 /* Give it a chance to define it a a spec file. */
3397 save_switch (decoded
->canonical_option
[0],
3398 decoded
->canonical_option_num_elements
- 1,
3399 &decoded
->canonical_option
[1], false, false);
3406 /* Handle an option DECODED that is not marked as CL_DRIVER.
3407 LANG_MASK will always be CL_DRIVER. */
3410 driver_wrong_lang_callback (const struct cl_decoded_option
*decoded
,
3411 unsigned int lang_mask ATTRIBUTE_UNUSED
)
3413 /* At this point, non-driver options are accepted (and expected to
3414 be passed down by specs) unless marked to be rejected by the
3415 driver. Options to be rejected by the driver but accepted by the
3416 compilers proper are treated just like completely unknown
3418 const struct cl_option
*option
= &cl_options
[decoded
->opt_index
];
3420 if (option
->cl_reject_driver
)
3421 error ("unrecognized command line option %qs",
3422 decoded
->orig_option_with_args_text
);
3424 save_switch (decoded
->canonical_option
[0],
3425 decoded
->canonical_option_num_elements
- 1,
3426 &decoded
->canonical_option
[1], false, true);
3429 static const char *spec_lang
= 0;
3430 static int last_language_n_infiles
;
3432 /* Parse -foffload option argument. */
3435 handle_foffload_option (const char *arg
)
3437 const char *c
, *cur
, *n
, *next
, *end
;
3440 /* If option argument starts with '-' then no target is specified and we
3441 do not need to parse it. */
3445 end
= strchr (arg
, '=');
3447 end
= strchr (arg
, '\0');
3452 next
= strchr (cur
, ',');
3455 next
= (next
> end
) ? end
: next
;
3457 target
= XNEWVEC (char, next
- cur
+ 1);
3458 memcpy (target
, cur
, next
- cur
);
3459 target
[next
- cur
] = '\0';
3461 /* If 'disable' is passed to the option, stop parsing the option and clean
3462 the list of offload targets. */
3463 if (strcmp (target
, "disable") == 0)
3465 free (offload_targets
);
3466 offload_targets
= xstrdup ("");
3470 /* Check that GCC is configured to support the offload target. */
3471 c
= OFFLOAD_TARGETS
;
3474 n
= strchr (c
, ',');
3476 n
= strchr (c
, '\0');
3478 if (next
- cur
== n
- c
&& strncmp (target
, c
, n
- c
) == 0)
3481 c
= *n
? n
+ 1 : NULL
;
3485 fatal_error (input_location
,
3486 "GCC is not configured to support %s as offload target",
3489 if (!offload_targets
)
3491 offload_targets
= target
;
3496 /* Check that the target hasn't already presented in the list. */
3497 c
= offload_targets
;
3500 n
= strchr (c
, ':');
3502 n
= strchr (c
, '\0');
3504 if (next
- cur
== n
- c
&& strncmp (c
, target
, n
- c
) == 0)
3511 /* If duplicate is not found, append the target to the list. */
3514 size_t offload_targets_len
= strlen (offload_targets
);
3516 = XRESIZEVEC (char, offload_targets
,
3517 offload_targets_len
+ next
- cur
+ 2);
3518 if (offload_targets_len
)
3519 offload_targets
[offload_targets_len
++] = ':';
3520 memcpy (offload_targets
+ offload_targets_len
, target
, next
- cur
);
3525 XDELETEVEC (target
);
3529 /* Handle a driver option; arguments and return value as for
3533 driver_handle_option (struct gcc_options
*opts
,
3534 struct gcc_options
*opts_set
,
3535 const struct cl_decoded_option
*decoded
,
3536 unsigned int lang_mask ATTRIBUTE_UNUSED
, int kind
,
3538 const struct cl_option_handlers
*handlers ATTRIBUTE_UNUSED
,
3539 diagnostic_context
*dc
)
3541 size_t opt_index
= decoded
->opt_index
;
3542 const char *arg
= decoded
->arg
;
3543 const char *compare_debug_replacement_opt
;
3544 int value
= decoded
->value
;
3545 bool validated
= false;
3546 bool do_save
= true;
3548 gcc_assert (opts
== &global_options
);
3549 gcc_assert (opts_set
== &global_options_set
);
3550 gcc_assert (kind
== DK_UNSPECIFIED
);
3551 gcc_assert (loc
== UNKNOWN_LOCATION
);
3552 gcc_assert (dc
== global_dc
);
3558 struct spec_list
*sl
;
3560 for (sl
= specs
; sl
; sl
= sl
->next
)
3561 printf ("*%s:\n%s\n\n", sl
->name
, *(sl
->ptr_spec
));
3562 if (link_command_spec
)
3563 printf ("*link_command:\n%s\n\n", link_command_spec
);
3567 case OPT_dumpversion
:
3568 printf ("%s\n", spec_version
);
3571 case OPT_dumpmachine
:
3572 printf ("%s\n", spec_machine
);
3578 /* CPP driver cannot obtain switch from cc1_options. */
3580 add_preprocessor_option ("--version", strlen ("--version"));
3581 add_assembler_option ("--version", strlen ("--version"));
3582 add_linker_option ("--version", strlen ("--version"));
3586 print_help_list
= 1;
3588 /* CPP driver cannot obtain switch from cc1_options. */
3590 add_preprocessor_option ("--help", 6);
3591 add_assembler_option ("--help", 6);
3592 add_linker_option ("--help", 6);
3596 print_subprocess_help
= 2;
3599 case OPT__target_help
:
3600 print_subprocess_help
= 1;
3602 /* CPP driver cannot obtain switch from cc1_options. */
3604 add_preprocessor_option ("--target-help", 13);
3605 add_assembler_option ("--target-help", 13);
3606 add_linker_option ("--target-help", 13);
3609 case OPT__no_sysroot_suffix
:
3610 case OPT_pass_exit_codes
:
3611 case OPT_print_search_dirs
:
3612 case OPT_print_file_name_
:
3613 case OPT_print_prog_name_
:
3614 case OPT_print_multi_lib
:
3615 case OPT_print_multi_directory
:
3616 case OPT_print_sysroot
:
3617 case OPT_print_multi_os_directory
:
3618 case OPT_print_multiarch
:
3619 case OPT_print_sysroot_headers_suffix
:
3622 /* These options set the variables specified in common.opt
3623 automatically, and do not need to be saved for spec
3628 case OPT_print_libgcc_file_name
:
3629 print_file_name
= "libgcc.a";
3633 case OPT_fuse_ld_bfd
:
3637 case OPT_fuse_ld_gold
:
3641 case OPT_fcompare_debug_second
:
3642 compare_debug_second
= 1;
3645 case OPT_fcompare_debug
:
3649 compare_debug_replacement_opt
= "-fcompare-debug=";
3651 goto compare_debug_with_arg
;
3654 compare_debug_replacement_opt
= "-fcompare-debug=-gtoggle";
3656 goto compare_debug_with_arg
;
3663 case OPT_fcompare_debug_
:
3664 compare_debug_replacement_opt
= decoded
->canonical_option
[0];
3665 compare_debug_with_arg
:
3666 gcc_assert (decoded
->canonical_option_num_elements
== 1);
3667 gcc_assert (arg
!= NULL
);
3672 if (compare_debug
< 0)
3673 compare_debug_opt
= NULL
;
3675 compare_debug_opt
= arg
;
3676 save_switch (compare_debug_replacement_opt
, 0, NULL
, validated
, true);
3679 case OPT_fdiagnostics_color_
:
3680 diagnostic_color_init (dc
, value
);
3686 /* Pass the rest of this option to the assembler. */
3688 /* Split the argument at commas. */
3690 for (j
= 0; arg
[j
]; j
++)
3693 add_assembler_option (arg
+ prev
, j
- prev
);
3697 /* Record the part after the last comma. */
3698 add_assembler_option (arg
+ prev
, j
- prev
);
3706 /* Pass the rest of this option to the preprocessor. */
3708 /* Split the argument at commas. */
3710 for (j
= 0; arg
[j
]; j
++)
3713 add_preprocessor_option (arg
+ prev
, j
- prev
);
3717 /* Record the part after the last comma. */
3718 add_preprocessor_option (arg
+ prev
, j
- prev
);
3726 /* Split the argument at commas. */
3728 for (j
= 0; arg
[j
]; j
++)
3731 add_infile (save_string (arg
+ prev
, j
- prev
), "*");
3734 /* Record the part after the last comma. */
3735 add_infile (arg
+ prev
, "*");
3741 add_infile (arg
, "*");
3745 case OPT_Xpreprocessor
:
3746 add_preprocessor_option (arg
, strlen (arg
));
3750 case OPT_Xassembler
:
3751 add_assembler_option (arg
, strlen (arg
));
3756 /* POSIX allows separation of -l and the lib arg; canonicalize
3757 by concatenating -l with its arg */
3758 add_infile (concat ("-l", arg
, NULL
), "*");
3763 /* Similarly, canonicalize -L for linkers that may not accept
3764 separate arguments. */
3765 save_switch (concat ("-L", arg
, NULL
), 0, NULL
, validated
, true);
3770 save_switch (concat ("-F", arg
, NULL
), 0, NULL
, validated
, true);
3773 case OPT_save_temps
:
3774 save_temps_flag
= SAVE_TEMPS_CWD
;
3778 case OPT_save_temps_
:
3779 if (strcmp (arg
, "cwd") == 0)
3780 save_temps_flag
= SAVE_TEMPS_CWD
;
3781 else if (strcmp (arg
, "obj") == 0
3782 || strcmp (arg
, "object") == 0)
3783 save_temps_flag
= SAVE_TEMPS_OBJ
;
3785 fatal_error (input_location
, "%qs is an unknown -save-temps option",
3786 decoded
->orig_option_with_args_text
);
3789 case OPT_no_canonical_prefixes
:
3790 /* Already handled as a special case, so ignored here. */
3796 /* These options set the variables specified in common.opt
3797 automatically, but do need to be saved for spec
3803 struct user_specs
*user
= XNEW (struct user_specs
);
3805 user
->next
= (struct user_specs
*) 0;
3806 user
->filename
= arg
;
3807 if (user_specs_tail
)
3808 user_specs_tail
->next
= user
;
3810 user_specs_head
= user
;
3811 user_specs_tail
= user
;
3817 target_system_root
= arg
;
3818 target_system_root_changed
= 1;
3823 if (report_times_to_file
)
3824 fclose (report_times_to_file
);
3825 report_times_to_file
= fopen (arg
, "a");
3831 This is similar to -v except that there is no execution
3832 of the commands and the echoed arguments are quoted. It
3833 is intended for use in shell scripts to capture the
3834 driver-generated command line. */
3835 verbose_only_flag
++;
3842 size_t len
= strlen (arg
);
3844 /* Catch the case where the user has forgotten to append a
3845 directory separator to the path. Note, they may be using
3846 -B to add an executable name prefix, eg "i386-elf-", in
3847 order to distinguish between multiple installations of
3848 GCC in the same directory. Hence we must check to see
3849 if appending a directory separator actually makes a
3850 valid directory name. */
3851 if (!IS_DIR_SEPARATOR (arg
[len
- 1])
3852 && is_directory (arg
, false))
3854 char *tmp
= XNEWVEC (char, len
+ 2);
3856 tmp
[len
] = DIR_SEPARATOR
;
3861 add_prefix (&exec_prefixes
, arg
, NULL
,
3862 PREFIX_PRIORITY_B_OPT
, 0, 0);
3863 add_prefix (&startfile_prefixes
, arg
, NULL
,
3864 PREFIX_PRIORITY_B_OPT
, 0, 0);
3865 add_prefix (&include_prefixes
, arg
, NULL
,
3866 PREFIX_PRIORITY_B_OPT
, 0, 0);
3873 if (!strcmp (spec_lang
, "none"))
3874 /* Suppress the warning if -xnone comes after the last input
3875 file, because alternate command interfaces like g++ might
3876 find it useful to place -xnone after each input file. */
3879 last_language_n_infiles
= n_infiles
;
3885 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3886 arg
= convert_filename (arg
, ! have_c
, 0);
3889 /* Save the output name in case -save-temps=obj was used. */
3890 save_temps_prefix
= xstrdup (arg
);
3891 /* On some systems, ld cannot handle "-o" without a space. So
3892 split the option from its argument. */
3893 save_switch ("-o", 1, &arg
, validated
, true);
3896 case OPT_static_libgcc
:
3897 case OPT_shared_libgcc
:
3898 case OPT_static_libgfortran
:
3899 case OPT_static_libstdc__
:
3900 /* These are always valid, since gcc.c itself understands the
3901 first two, gfortranspec.c understands -static-libgfortran and
3902 g++spec.c understands -static-libstdc++ */
3911 handle_foffload_option (arg
);
3915 /* Various driver options need no special processing at this
3916 point, having been handled in a prescan above or being
3917 handled by specs. */
3922 save_switch (decoded
->canonical_option
[0],
3923 decoded
->canonical_option_num_elements
- 1,
3924 &decoded
->canonical_option
[1], validated
, true);
3928 /* Put the driver's standard set of option handlers in *HANDLERS. */
3931 set_option_handlers (struct cl_option_handlers
*handlers
)
3933 handlers
->unknown_option_callback
= driver_unknown_option_callback
;
3934 handlers
->wrong_lang_callback
= driver_wrong_lang_callback
;
3935 handlers
->num_handlers
= 3;
3936 handlers
->handlers
[0].handler
= driver_handle_option
;
3937 handlers
->handlers
[0].mask
= CL_DRIVER
;
3938 handlers
->handlers
[1].handler
= common_handle_option
;
3939 handlers
->handlers
[1].mask
= CL_COMMON
;
3940 handlers
->handlers
[2].handler
= target_handle_option
;
3941 handlers
->handlers
[2].mask
= CL_TARGET
;
3944 /* Create the vector `switches' and its contents.
3945 Store its length in `n_switches'. */
3948 process_command (unsigned int decoded_options_count
,
3949 struct cl_decoded_option
*decoded_options
)
3953 char *tooldir_prefix
, *tooldir_prefix2
;
3954 char *(*get_relative_prefix
) (const char *, const char *,
3955 const char *) = NULL
;
3956 struct cl_option_handlers handlers
;
3959 gcc_exec_prefix
= getenv ("GCC_EXEC_PREFIX");
3963 added_libraries
= 0;
3965 /* Figure compiler version from version string. */
3967 compiler_version
= temp1
= xstrdup (version_string
);
3969 for (; *temp1
; ++temp1
)
3978 /* Handle any -no-canonical-prefixes flag early, to assign the function
3979 that builds relative prefixes. This function creates default search
3980 paths that are needed later in normal option handling. */
3982 for (j
= 1; j
< decoded_options_count
; j
++)
3984 if (decoded_options
[j
].opt_index
== OPT_no_canonical_prefixes
)
3986 get_relative_prefix
= make_relative_prefix_ignore_links
;
3990 if (! get_relative_prefix
)
3991 get_relative_prefix
= make_relative_prefix
;
3993 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3994 see if we can create it from the pathname specified in
3995 decoded_options[0].arg. */
3997 gcc_libexec_prefix
= standard_libexec_prefix
;
3999 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
4000 if (!gcc_exec_prefix
)
4002 gcc_exec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
4003 standard_bindir_prefix
,
4004 standard_exec_prefix
);
4005 gcc_libexec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
4006 standard_bindir_prefix
,
4007 standard_libexec_prefix
);
4008 if (gcc_exec_prefix
)
4009 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix
, NULL
));
4013 /* make_relative_prefix requires a program name, but
4014 GCC_EXEC_PREFIX is typically a directory name with a trailing
4015 / (which is ignored by make_relative_prefix), so append a
4017 char *tmp_prefix
= concat (gcc_exec_prefix
, "gcc", NULL
);
4018 gcc_libexec_prefix
= get_relative_prefix (tmp_prefix
,
4019 standard_exec_prefix
,
4020 standard_libexec_prefix
);
4022 /* The path is unrelocated, so fallback to the original setting. */
4023 if (!gcc_libexec_prefix
)
4024 gcc_libexec_prefix
= standard_libexec_prefix
;
4030 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
4031 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
4032 or an automatically created GCC_EXEC_PREFIX from
4033 decoded_options[0].arg. */
4035 /* Do language-specific adjustment/addition of flags. */
4036 lang_specific_driver (&decoded_options
, &decoded_options_count
,
4039 if (gcc_exec_prefix
)
4041 int len
= strlen (gcc_exec_prefix
);
4043 if (len
> (int) sizeof ("/lib/gcc/") - 1
4044 && (IS_DIR_SEPARATOR (gcc_exec_prefix
[len
-1])))
4046 temp
= gcc_exec_prefix
+ len
- sizeof ("/lib/gcc/") + 1;
4047 if (IS_DIR_SEPARATOR (*temp
)
4048 && filename_ncmp (temp
+ 1, "lib", 3) == 0
4049 && IS_DIR_SEPARATOR (temp
[4])
4050 && filename_ncmp (temp
+ 5, "gcc", 3) == 0)
4051 len
-= sizeof ("/lib/gcc/") - 1;
4054 set_std_prefix (gcc_exec_prefix
, len
);
4055 add_prefix (&exec_prefixes
, gcc_libexec_prefix
, "GCC",
4056 PREFIX_PRIORITY_LAST
, 0, 0);
4057 add_prefix (&startfile_prefixes
, gcc_exec_prefix
, "GCC",
4058 PREFIX_PRIORITY_LAST
, 0, 0);
4061 /* COMPILER_PATH and LIBRARY_PATH have values
4062 that are lists of directory names with colons. */
4064 temp
= getenv ("COMPILER_PATH");
4067 const char *startp
, *endp
;
4068 char *nstore
= (char *) alloca (strlen (temp
) + 3);
4070 startp
= endp
= temp
;
4073 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
4075 strncpy (nstore
, startp
, endp
- startp
);
4077 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
4078 else if (!IS_DIR_SEPARATOR (endp
[-1]))
4080 nstore
[endp
- startp
] = DIR_SEPARATOR
;
4081 nstore
[endp
- startp
+ 1] = 0;
4084 nstore
[endp
- startp
] = 0;
4085 add_prefix (&exec_prefixes
, nstore
, 0,
4086 PREFIX_PRIORITY_LAST
, 0, 0);
4087 add_prefix (&include_prefixes
, nstore
, 0,
4088 PREFIX_PRIORITY_LAST
, 0, 0);
4091 endp
= startp
= endp
+ 1;
4098 temp
= getenv (LIBRARY_PATH_ENV
);
4099 if (temp
&& *cross_compile
== '0')
4101 const char *startp
, *endp
;
4102 char *nstore
= (char *) alloca (strlen (temp
) + 3);
4104 startp
= endp
= temp
;
4107 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
4109 strncpy (nstore
, startp
, endp
- startp
);
4111 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
4112 else if (!IS_DIR_SEPARATOR (endp
[-1]))
4114 nstore
[endp
- startp
] = DIR_SEPARATOR
;
4115 nstore
[endp
- startp
+ 1] = 0;
4118 nstore
[endp
- startp
] = 0;
4119 add_prefix (&startfile_prefixes
, nstore
, NULL
,
4120 PREFIX_PRIORITY_LAST
, 0, 1);
4123 endp
= startp
= endp
+ 1;
4130 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
4131 temp
= getenv ("LPATH");
4132 if (temp
&& *cross_compile
== '0')
4134 const char *startp
, *endp
;
4135 char *nstore
= (char *) alloca (strlen (temp
) + 3);
4137 startp
= endp
= temp
;
4140 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
4142 strncpy (nstore
, startp
, endp
- startp
);
4144 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
4145 else if (!IS_DIR_SEPARATOR (endp
[-1]))
4147 nstore
[endp
- startp
] = DIR_SEPARATOR
;
4148 nstore
[endp
- startp
+ 1] = 0;
4151 nstore
[endp
- startp
] = 0;
4152 add_prefix (&startfile_prefixes
, nstore
, NULL
,
4153 PREFIX_PRIORITY_LAST
, 0, 1);
4156 endp
= startp
= endp
+ 1;
4163 /* Process the options and store input files and switches in their
4166 last_language_n_infiles
= -1;
4168 set_option_handlers (&handlers
);
4170 for (j
= 1; j
< decoded_options_count
; j
++)
4172 switch (decoded_options
[j
].opt_index
)
4184 for (j
= 1; j
< decoded_options_count
; j
++)
4186 if (decoded_options
[j
].opt_index
== OPT_SPECIAL_input_file
)
4188 const char *arg
= decoded_options
[j
].arg
;
4189 const char *p
= strrchr (arg
, '@');
4193 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4194 arg
= convert_filename (arg
, 0, access (arg
, F_OK
));
4196 /* For LTO static archive support we handle input file
4197 specifications that are composed of a filename and
4198 an offset like FNAME@OFFSET. */
4201 && sscanf (p
, "@%li%n", &offset
, &consumed
) >= 1
4202 && strlen (p
) == (unsigned int)consumed
)
4204 fname
= (char *)xmalloc (p
- arg
+ 1);
4205 memcpy (fname
, arg
, p
- arg
);
4206 fname
[p
- arg
] = '\0';
4207 /* Only accept non-stdin and existing FNAME parts, otherwise
4208 try with the full name. */
4209 if (strcmp (fname
, "-") == 0 || access (fname
, F_OK
) < 0)
4212 fname
= xstrdup (arg
);
4216 fname
= xstrdup (arg
);
4218 if (strcmp (fname
, "-") != 0 && access (fname
, F_OK
) < 0)
4219 perror_with_name (fname
);
4221 add_infile (arg
, spec_lang
);
4227 read_cmdline_option (&global_options
, &global_options_set
,
4228 decoded_options
+ j
, UNKNOWN_LOCATION
,
4229 CL_DRIVER
, &handlers
, global_dc
);
4233 && strcmp (output_file
, "-") != 0
4234 && strcmp (output_file
, HOST_BIT_BUCKET
) != 0)
4237 for (i
= 0; i
< n_infiles
; i
++)
4238 if ((!infiles
[i
].language
|| infiles
[i
].language
[0] != '*')
4239 && canonical_filename_eq (infiles
[i
].name
, output_file
))
4240 fatal_error (input_location
,
4241 "input file %qs is the same as output file",
4245 /* If -save-temps=obj and -o name, create the prefix to use for %b.
4246 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
4247 if (save_temps_flag
== SAVE_TEMPS_OBJ
&& save_temps_prefix
!= NULL
)
4249 save_temps_length
= strlen (save_temps_prefix
);
4250 temp
= strrchr (lbasename (save_temps_prefix
), '.');
4253 save_temps_length
-= strlen (temp
);
4254 save_temps_prefix
[save_temps_length
] = '\0';
4258 else if (save_temps_prefix
!= NULL
)
4260 free (save_temps_prefix
);
4261 save_temps_prefix
= NULL
;
4264 if (save_temps_flag
&& use_pipes
)
4266 /* -save-temps overrides -pipe, so that temp files are produced */
4267 if (save_temps_flag
)
4268 warning (0, "-pipe ignored because -save-temps specified");
4274 const char *gcd
= getenv ("GCC_COMPARE_DEBUG");
4276 if (gcd
&& gcd
[0] == '-')
4279 compare_debug_opt
= gcd
;
4281 else if (gcd
&& *gcd
&& strcmp (gcd
, "0"))
4284 compare_debug_opt
= "-gtoggle";
4287 else if (compare_debug
< 0)
4290 gcc_assert (!compare_debug_opt
);
4293 /* Set up the search paths. We add directories that we expect to
4294 contain GNU Toolchain components before directories specified by
4295 the machine description so that we will find GNU components (like
4296 the GNU assembler) before those of the host system. */
4298 /* If we don't know where the toolchain has been installed, use the
4299 configured-in locations. */
4300 if (!gcc_exec_prefix
)
4303 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "GCC",
4304 PREFIX_PRIORITY_LAST
, 1, 0);
4305 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "BINUTILS",
4306 PREFIX_PRIORITY_LAST
, 2, 0);
4307 add_prefix (&exec_prefixes
, standard_exec_prefix
, "BINUTILS",
4308 PREFIX_PRIORITY_LAST
, 2, 0);
4310 add_prefix (&startfile_prefixes
, standard_exec_prefix
, "BINUTILS",
4311 PREFIX_PRIORITY_LAST
, 1, 0);
4314 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix
));
4315 tooldir_prefix2
= concat (tooldir_base_prefix
, spec_host_machine
,
4316 dir_separator_str
, NULL
);
4318 /* Look for tools relative to the location from which the driver is
4319 running, or, if that is not available, the configured prefix. */
4321 = concat (gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
4322 spec_host_machine
, dir_separator_str
, spec_version
,
4323 accel_dir_suffix
, dir_separator_str
, tooldir_prefix2
, NULL
);
4324 free (tooldir_prefix2
);
4326 add_prefix (&exec_prefixes
,
4327 concat (tooldir_prefix
, "bin", dir_separator_str
, NULL
),
4328 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 0);
4329 add_prefix (&startfile_prefixes
,
4330 concat (tooldir_prefix
, "lib", dir_separator_str
, NULL
),
4331 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 1);
4332 free (tooldir_prefix
);
4334 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
4335 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
4336 then consider it to relocate with the rest of the GCC installation
4337 if GCC_EXEC_PREFIX is set.
4338 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
4339 if (target_system_root
&& !target_system_root_changed
&& gcc_exec_prefix
)
4341 char *tmp_prefix
= get_relative_prefix (decoded_options
[0].arg
,
4342 standard_bindir_prefix
,
4343 target_system_root
);
4344 if (tmp_prefix
&& access_check (tmp_prefix
, F_OK
) == 0)
4346 target_system_root
= tmp_prefix
;
4347 target_system_root_changed
= 1;
4352 /* More prefixes are enabled in main, after we read the specs file
4353 and determine whether this is cross-compilation or not. */
4355 if (n_infiles
== last_language_n_infiles
&& spec_lang
!= 0)
4356 warning (0, "%<-x %s%> after last input file has no effect", spec_lang
);
4358 /* Synthesize -fcompare-debug flag from the GCC_COMPARE_DEBUG
4359 environment variable. */
4360 if (compare_debug
== 2 || compare_debug
== 3)
4362 const char *opt
= concat ("-fcompare-debug=", compare_debug_opt
, NULL
);
4363 save_switch (opt
, 0, NULL
, false, true);
4367 /* Ensure we only invoke each subprocess once. */
4368 if (print_subprocess_help
|| print_help_list
|| print_version
)
4372 /* Create a dummy input file, so that we can pass
4373 the help option on to the various sub-processes. */
4374 add_infile ("help-dummy", "c");
4378 switches
[n_switches
].part1
= 0;
4380 infiles
[n_infiles
].name
= 0;
4383 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4384 and place that in the environment. */
4387 set_collect_gcc_options (void)
4392 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4394 obstack_grow (&collect_obstack
, "COLLECT_GCC_OPTIONS=",
4395 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4398 for (i
= 0; (int) i
< n_switches
; i
++)
4400 const char *const *args
;
4403 obstack_grow (&collect_obstack
, " ", 1);
4407 /* Ignore elided switches. */
4408 if ((switches
[i
].live_cond
4409 & (SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
))
4413 obstack_grow (&collect_obstack
, "'-", 2);
4414 q
= switches
[i
].part1
;
4415 while ((p
= strchr (q
, '\'')))
4417 obstack_grow (&collect_obstack
, q
, p
- q
);
4418 obstack_grow (&collect_obstack
, "'\\''", 4);
4421 obstack_grow (&collect_obstack
, q
, strlen (q
));
4422 obstack_grow (&collect_obstack
, "'", 1);
4424 for (args
= switches
[i
].args
; args
&& *args
; args
++)
4426 obstack_grow (&collect_obstack
, " '", 2);
4428 while ((p
= strchr (q
, '\'')))
4430 obstack_grow (&collect_obstack
, q
, p
- q
);
4431 obstack_grow (&collect_obstack
, "'\\''", 4);
4434 obstack_grow (&collect_obstack
, q
, strlen (q
));
4435 obstack_grow (&collect_obstack
, "'", 1);
4438 obstack_grow (&collect_obstack
, "\0", 1);
4439 xputenv (XOBFINISH (&collect_obstack
, char *));
4442 /* Process a spec string, accumulating and running commands. */
4444 /* These variables describe the input file name.
4445 input_file_number is the index on outfiles of this file,
4446 so that the output file name can be stored for later use by %o.
4447 input_basename is the start of the part of the input file
4448 sans all directory names, and basename_length is the number
4449 of characters starting there excluding the suffix .c or whatever. */
4451 static const char *gcc_input_filename
;
4452 static int input_file_number
;
4453 size_t input_filename_length
;
4454 static int basename_length
;
4455 static int suffixed_basename_length
;
4456 static const char *input_basename
;
4457 static const char *input_suffix
;
4458 #ifndef HOST_LACKS_INODE_NUMBERS
4459 static struct stat input_stat
;
4461 static int input_stat_set
;
4463 /* The compiler used to process the current input file. */
4464 static struct compiler
*input_file_compiler
;
4466 /* These are variables used within do_spec and do_spec_1. */
4468 /* Nonzero if an arg has been started and not yet terminated
4469 (with space, tab or newline). */
4470 static int arg_going
;
4472 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4473 is a temporary file name. */
4474 static int delete_this_arg
;
4476 /* Nonzero means %w has been seen; the next arg to be terminated
4477 is the output file name of this compilation. */
4478 static int this_is_output_file
;
4480 /* Nonzero means %s has been seen; the next arg to be terminated
4481 is the name of a library file and we should try the standard
4482 search dirs for it. */
4483 static int this_is_library_file
;
4485 /* Nonzero means %T has been seen; the next arg to be terminated
4486 is the name of a linker script and we should try all of the
4487 standard search dirs for it. If it is found insert a --script
4488 command line switch and then substitute the full path in place,
4489 otherwise generate an error message. */
4490 static int this_is_linker_script
;
4492 /* Nonzero means that the input of this command is coming from a pipe. */
4493 static int input_from_pipe
;
4495 /* Nonnull means substitute this for any suffix when outputting a switches
4497 static const char *suffix_subst
;
4499 /* If there is an argument being accumulated, terminate it and store it. */
4502 end_going_arg (void)
4508 obstack_1grow (&obstack
, 0);
4509 string
= XOBFINISH (&obstack
, const char *);
4510 if (this_is_library_file
)
4511 string
= find_file (string
);
4512 if (this_is_linker_script
)
4514 char * full_script_path
= find_a_file (&startfile_prefixes
, string
, R_OK
, true);
4516 if (full_script_path
== NULL
)
4518 error ("unable to locate default linker script %qs in the library search paths", string
);
4519 /* Script was not found on search path. */
4522 store_arg ("--script", false, false);
4523 string
= full_script_path
;
4525 store_arg (string
, delete_this_arg
, this_is_output_file
);
4526 if (this_is_output_file
)
4527 outfiles
[input_file_number
] = string
;
4533 /* Parse the WRAPPER string which is a comma separated list of the command line
4534 and insert them into the beginning of argbuf. */
4537 insert_wrapper (const char *wrapper
)
4541 char *buf
= xstrdup (wrapper
);
4543 unsigned int old_length
= argbuf
.length ();
4551 while ((p
= strchr (p
, ',')) != NULL
);
4553 argbuf
.safe_grow (old_length
+ n
);
4554 memmove (argbuf
.address () + n
,
4556 old_length
* sizeof (const_char_p
));
4570 while ((p
= strchr (p
, ',')) != NULL
);
4571 gcc_assert (i
== n
);
4574 /* Process the spec SPEC and run the commands specified therein.
4575 Returns 0 if the spec is successfully processed; -1 if failed. */
4578 do_spec (const char *spec
)
4582 value
= do_spec_2 (spec
);
4584 /* Force out any unfinished command.
4585 If -pipe, this forces out the last command if it ended in `|'. */
4588 if (argbuf
.length () > 0
4589 && !strcmp (argbuf
.last (), "|"))
4592 set_collect_gcc_options ();
4594 if (argbuf
.length () > 0)
4602 do_spec_2 (const char *spec
)
4608 delete_this_arg
= 0;
4609 this_is_output_file
= 0;
4610 this_is_library_file
= 0;
4611 this_is_linker_script
= 0;
4612 input_from_pipe
= 0;
4613 suffix_subst
= NULL
;
4615 result
= do_spec_1 (spec
, 0, NULL
);
4623 /* Process the given spec string and add any new options to the end
4624 of the switches/n_switches array. */
4627 do_option_spec (const char *name
, const char *spec
)
4629 unsigned int i
, value_count
, value_len
;
4630 const char *p
, *q
, *value
;
4631 char *tmp_spec
, *tmp_spec_p
;
4633 if (configure_default_options
[0].name
== NULL
)
4636 for (i
= 0; i
< ARRAY_SIZE (configure_default_options
); i
++)
4637 if (strcmp (configure_default_options
[i
].name
, name
) == 0)
4639 if (i
== ARRAY_SIZE (configure_default_options
))
4642 value
= configure_default_options
[i
].value
;
4643 value_len
= strlen (value
);
4645 /* Compute the size of the final spec. */
4648 while ((p
= strstr (p
, "%(VALUE)")) != NULL
)
4654 /* Replace each %(VALUE) by the specified value. */
4655 tmp_spec
= (char *) alloca (strlen (spec
) + 1
4656 + value_count
* (value_len
- strlen ("%(VALUE)")));
4657 tmp_spec_p
= tmp_spec
;
4659 while ((p
= strstr (q
, "%(VALUE)")) != NULL
)
4661 memcpy (tmp_spec_p
, q
, p
- q
);
4662 tmp_spec_p
= tmp_spec_p
+ (p
- q
);
4663 memcpy (tmp_spec_p
, value
, value_len
);
4664 tmp_spec_p
+= value_len
;
4665 q
= p
+ strlen ("%(VALUE)");
4667 strcpy (tmp_spec_p
, q
);
4669 do_self_spec (tmp_spec
);
4672 /* Process the given spec string and add any new options to the end
4673 of the switches/n_switches array. */
4676 do_self_spec (const char *spec
)
4681 do_spec_1 (" ", 0, NULL
);
4683 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4684 do_self_specs adds the replacements to switches array, so it shouldn't
4685 be processed afterwards. */
4686 for (i
= 0; i
< n_switches
; i
++)
4687 if ((switches
[i
].live_cond
& SWITCH_IGNORE
))
4688 switches
[i
].live_cond
|= SWITCH_IGNORE_PERMANENTLY
;
4690 if (argbuf
.length () > 0)
4692 const char **argbuf_copy
;
4693 struct cl_decoded_option
*decoded_options
;
4694 struct cl_option_handlers handlers
;
4695 unsigned int decoded_options_count
;
4698 /* Create a copy of argbuf with a dummy argv[0] entry for
4699 decode_cmdline_options_to_array. */
4700 argbuf_copy
= XNEWVEC (const char *,
4701 argbuf
.length () + 1);
4702 argbuf_copy
[0] = "";
4703 memcpy (argbuf_copy
+ 1, argbuf
.address (),
4704 argbuf
.length () * sizeof (const char *));
4706 decode_cmdline_options_to_array (argbuf
.length () + 1,
4708 CL_DRIVER
, &decoded_options
,
4709 &decoded_options_count
);
4712 set_option_handlers (&handlers
);
4714 for (j
= 1; j
< decoded_options_count
; j
++)
4716 switch (decoded_options
[j
].opt_index
)
4718 case OPT_SPECIAL_input_file
:
4719 /* Specs should only generate options, not input
4721 if (strcmp (decoded_options
[j
].arg
, "-") != 0)
4722 fatal_error (input_location
,
4723 "switch %qs does not start with %<-%>",
4724 decoded_options
[j
].arg
);
4726 fatal_error (input_location
,
4727 "spec-generated switch is just %<-%>");
4730 case OPT_fcompare_debug_second
:
4731 case OPT_fcompare_debug
:
4732 case OPT_fcompare_debug_
:
4734 /* Avoid duplicate processing of some options from
4735 compare-debug specs; just save them here. */
4736 save_switch (decoded_options
[j
].canonical_option
[0],
4737 (decoded_options
[j
].canonical_option_num_elements
4739 &decoded_options
[j
].canonical_option
[1], false, true);
4743 read_cmdline_option (&global_options
, &global_options_set
,
4744 decoded_options
+ j
, UNKNOWN_LOCATION
,
4745 CL_DRIVER
, &handlers
, global_dc
);
4750 free (decoded_options
);
4753 switches
[n_switches
].part1
= 0;
4757 /* Callback for processing %D and %I specs. */
4759 struct spec_path_info
{
4764 bool separate_options
;
4768 spec_path (char *path
, void *data
)
4770 struct spec_path_info
*info
= (struct spec_path_info
*) data
;
4774 if (info
->omit_relative
&& !IS_ABSOLUTE_PATH (path
))
4777 if (info
->append_len
!= 0)
4779 len
= strlen (path
);
4780 memcpy (path
+ len
, info
->append
, info
->append_len
+ 1);
4783 if (!is_directory (path
, true))
4786 do_spec_1 (info
->option
, 1, NULL
);
4787 if (info
->separate_options
)
4788 do_spec_1 (" ", 0, NULL
);
4790 if (info
->append_len
== 0)
4792 len
= strlen (path
);
4793 save
= path
[len
- 1];
4794 if (IS_DIR_SEPARATOR (path
[len
- 1]))
4795 path
[len
- 1] = '\0';
4798 do_spec_1 (path
, 1, NULL
);
4799 do_spec_1 (" ", 0, NULL
);
4801 /* Must not damage the original path. */
4802 if (info
->append_len
== 0)
4803 path
[len
- 1] = save
;
4808 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4812 create_at_file (char **argv
)
4814 char *temp_file
= make_temp_file ("");
4815 char *at_argument
= concat ("@", temp_file
, NULL
);
4816 FILE *f
= fopen (temp_file
, "w");
4820 fatal_error (input_location
, "could not open temporary response file %s",
4823 status
= writeargv (argv
, f
);
4826 fatal_error (input_location
,
4827 "could not write to temporary response file %s",
4830 status
= fclose (f
);
4833 fatal_error (input_location
, "could not close temporary response file %s",
4836 store_arg (at_argument
, 0, 0);
4838 record_temp_file (temp_file
, !save_temps_flag
, !save_temps_flag
);
4841 /* True if we should compile INFILE. */
4844 compile_input_file_p (struct infile
*infile
)
4846 if ((!infile
->language
) || (infile
->language
[0] != '*'))
4847 if (infile
->incompiler
== input_file_compiler
)
4852 /* Process each member of VEC as a spec. */
4855 do_specs_vec (vec
<char_p
> vec
)
4860 FOR_EACH_VEC_ELT (vec
, ix
, opt
)
4862 do_spec_1 (opt
, 1, NULL
);
4863 /* Make each accumulated option a separate argument. */
4864 do_spec_1 (" ", 0, NULL
);
4868 /* Process the sub-spec SPEC as a portion of a larger spec.
4869 This is like processing a whole spec except that we do
4870 not initialize at the beginning and we do not supply a
4871 newline by default at the end.
4872 INSWITCH nonzero means don't process %-sequences in SPEC;
4873 in this case, % is treated as an ordinary character.
4874 This is used while substituting switches.
4875 INSWITCH nonzero also causes SPC not to terminate an argument.
4877 Value is zero unless a line was finished
4878 and the command on that line reported an error. */
4881 do_spec_1 (const char *spec
, int inswitch
, const char *soft_matched_part
)
4883 const char *p
= spec
;
4888 /* If it's an empty string argument to a switch, keep it as is. */
4889 if (inswitch
&& !*p
)
4893 /* If substituting a switch, treat all chars like letters.
4894 Otherwise, NL, SPC, TAB and % are special. */
4895 switch (inswitch
? 'a' : c
)
4900 if (argbuf
.length () > 0
4901 && !strcmp (argbuf
.last (), "|"))
4903 /* A `|' before the newline means use a pipe here,
4904 but only if -pipe was specified.
4905 Otherwise, execute now and don't pass the `|' as an arg. */
4908 input_from_pipe
= 1;
4915 set_collect_gcc_options ();
4917 if (argbuf
.length () > 0)
4923 /* Reinitialize for a new command, and for a new argument. */
4926 delete_this_arg
= 0;
4927 this_is_output_file
= 0;
4928 this_is_library_file
= 0;
4929 this_is_linker_script
= 0;
4930 input_from_pipe
= 0;
4937 obstack_1grow (&obstack
, c
);
4945 /* Reinitialize for a new argument. */
4946 delete_this_arg
= 0;
4947 this_is_output_file
= 0;
4948 this_is_library_file
= 0;
4949 this_is_linker_script
= 0;
4956 fatal_error (input_location
, "spec %qs invalid", spec
);
4959 if (save_temps_length
)
4960 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4962 obstack_grow (&obstack
, input_basename
, basename_length
);
4963 if (compare_debug
< 0)
4964 obstack_grow (&obstack
, ".gk", 3);
4969 if (save_temps_length
)
4970 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4972 obstack_grow (&obstack
, input_basename
, suffixed_basename_length
);
4973 if (compare_debug
< 0)
4974 obstack_grow (&obstack
, ".gk", 3);
4979 delete_this_arg
= 2;
4982 /* Dump out the directories specified with LIBRARY_PATH,
4983 followed by the absolute directories
4984 that we search for startfiles. */
4987 struct spec_path_info info
;
4990 info
.append_len
= 0;
4991 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4992 /* Used on systems which record the specified -L dirs
4993 and use them to search for dynamic linking.
4994 Relative directories always come from -B,
4995 and it is better not to use them for searching
4996 at run time. In particular, stage1 loses. */
4997 info
.omit_relative
= true;
4999 info
.omit_relative
= false;
5001 info
.separate_options
= false;
5003 for_each_path (&startfile_prefixes
, true, 0, spec_path
, &info
);
5008 /* %efoo means report an error with `foo' as error message
5009 and don't execute any more commands for this file. */
5013 while (*p
!= 0 && *p
!= '\n')
5015 buf
= (char *) alloca (p
- q
+ 1);
5016 strncpy (buf
, q
, p
- q
);
5018 error ("%s", _(buf
));
5023 /* %nfoo means report a notice with `foo' on stderr. */
5027 while (*p
!= 0 && *p
!= '\n')
5029 buf
= (char *) alloca (p
- q
+ 1);
5030 strncpy (buf
, q
, p
- q
);
5032 inform (0, "%s", _(buf
));
5042 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
5043 defined, and it is not a directory, and it is
5044 writable, use it. Otherwise, treat this like any
5045 other temporary file. */
5047 if ((!save_temps_flag
)
5048 && (stat (HOST_BIT_BUCKET
, &st
) == 0) && (!S_ISDIR (st
.st_mode
))
5049 && (access (HOST_BIT_BUCKET
, W_OK
) == 0))
5051 obstack_grow (&obstack
, HOST_BIT_BUCKET
,
5052 strlen (HOST_BIT_BUCKET
));
5053 delete_this_arg
= 0;
5058 goto create_temp_file
;
5062 obstack_1grow (&obstack
, '-');
5063 delete_this_arg
= 0;
5066 /* consume suffix */
5067 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
5069 if (p
[0] == '%' && p
[1] == 'O')
5074 goto create_temp_file
;
5078 /* consume suffix */
5079 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
5081 if (p
[0] == '%' && p
[1] == 'O')
5086 goto create_temp_file
;
5092 struct temp_name
*t
;
5094 const char *suffix
= p
;
5095 char *saved_suffix
= NULL
;
5097 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
5099 suffix_length
= p
- suffix
;
5100 if (p
[0] == '%' && p
[1] == 'O')
5103 /* We don't support extra suffix characters after %O. */
5104 if (*p
== '.' || ISALNUM ((unsigned char) *p
))
5105 fatal_error (input_location
,
5106 "spec %qs has invalid %<%%0%c%>", spec
, *p
);
5107 if (suffix_length
== 0)
5108 suffix
= TARGET_OBJECT_SUFFIX
;
5112 = XNEWVEC (char, suffix_length
5113 + strlen (TARGET_OBJECT_SUFFIX
) + 1);
5114 strncpy (saved_suffix
, suffix
, suffix_length
);
5115 strcpy (saved_suffix
+ suffix_length
,
5116 TARGET_OBJECT_SUFFIX
);
5118 suffix_length
+= strlen (TARGET_OBJECT_SUFFIX
);
5121 if (compare_debug
< 0)
5123 suffix
= concat (".gk", suffix
, NULL
);
5127 /* If -save-temps=obj and -o were specified, use that for the
5129 if (save_temps_length
)
5132 temp_filename_length
5133 = save_temps_length
+ suffix_length
+ 1;
5134 tmp
= (char *) alloca (temp_filename_length
);
5135 memcpy (tmp
, save_temps_prefix
, save_temps_length
);
5136 memcpy (tmp
+ save_temps_length
, suffix
, suffix_length
);
5137 tmp
[save_temps_length
+ suffix_length
] = '\0';
5138 temp_filename
= save_string (tmp
, save_temps_length
5140 obstack_grow (&obstack
, temp_filename
,
5141 temp_filename_length
);
5143 delete_this_arg
= 0;
5147 /* If the gcc_input_filename has the same suffix specified
5148 for the %g, %u, or %U, and -save-temps is specified,
5149 we could end up using that file as an intermediate
5150 thus clobbering the user's source file (.e.g.,
5151 gcc -save-temps foo.s would clobber foo.s with the
5152 output of cpp0). So check for this condition and
5153 generate a temp file as the intermediate. */
5155 if (save_temps_flag
)
5158 temp_filename_length
= basename_length
+ suffix_length
+ 1;
5159 tmp
= (char *) alloca (temp_filename_length
);
5160 memcpy (tmp
, input_basename
, basename_length
);
5161 memcpy (tmp
+ basename_length
, suffix
, suffix_length
);
5162 tmp
[basename_length
+ suffix_length
] = '\0';
5163 temp_filename
= tmp
;
5165 if (filename_cmp (temp_filename
, gcc_input_filename
) != 0)
5167 #ifndef HOST_LACKS_INODE_NUMBERS
5168 struct stat st_temp
;
5170 /* Note, set_input() resets input_stat_set to 0. */
5171 if (input_stat_set
== 0)
5173 input_stat_set
= stat (gcc_input_filename
,
5175 if (input_stat_set
>= 0)
5179 /* If we have the stat for the gcc_input_filename
5180 and we can do the stat for the temp_filename
5181 then the they could still refer to the same
5182 file if st_dev/st_ino's are the same. */
5183 if (input_stat_set
!= 1
5184 || stat (temp_filename
, &st_temp
) < 0
5185 || input_stat
.st_dev
!= st_temp
.st_dev
5186 || input_stat
.st_ino
!= st_temp
.st_ino
)
5188 /* Just compare canonical pathnames. */
5189 char* input_realname
= lrealpath (gcc_input_filename
);
5190 char* temp_realname
= lrealpath (temp_filename
);
5191 bool files_differ
= filename_cmp (input_realname
, temp_realname
);
5192 free (input_realname
);
5193 free (temp_realname
);
5197 temp_filename
= save_string (temp_filename
,
5198 temp_filename_length
+ 1);
5199 obstack_grow (&obstack
, temp_filename
,
5200 temp_filename_length
);
5202 delete_this_arg
= 0;
5208 /* See if we already have an association of %g/%u/%U and
5210 for (t
= temp_names
; t
; t
= t
->next
)
5211 if (t
->length
== suffix_length
5212 && strncmp (t
->suffix
, suffix
, suffix_length
) == 0
5213 && t
->unique
== (c
== 'u' || c
== 'U' || c
== 'j'))
5216 /* Make a new association if needed. %u and %j
5218 if (t
== 0 || c
== 'u' || c
== 'j')
5222 t
= XNEW (struct temp_name
);
5223 t
->next
= temp_names
;
5226 t
->length
= suffix_length
;
5229 t
->suffix
= saved_suffix
;
5230 saved_suffix
= NULL
;
5233 t
->suffix
= save_string (suffix
, suffix_length
);
5234 t
->unique
= (c
== 'u' || c
== 'U' || c
== 'j');
5235 temp_filename
= make_temp_file (t
->suffix
);
5236 temp_filename_length
= strlen (temp_filename
);
5237 t
->filename
= temp_filename
;
5238 t
->filename_length
= temp_filename_length
;
5241 free (saved_suffix
);
5243 obstack_grow (&obstack
, t
->filename
, t
->filename_length
);
5244 delete_this_arg
= 1;
5252 if (at_file_supplied
)
5254 /* We are going to expand `%i' to `@FILE', where FILE
5255 is a newly-created temporary filename. The filenames
5256 that would usually be expanded in place of %o will be
5257 written to the temporary file. */
5262 for (i
= 0; i
< n_infiles
; i
++)
5263 if (compile_input_file_p (&infiles
[i
]))
5266 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
5268 /* Copy the strings over. */
5269 for (i
= 0, j
= 0; i
< n_infiles
; i
++)
5270 if (compile_input_file_p (&infiles
[i
]))
5272 argv
[j
] = CONST_CAST (char *, infiles
[i
].name
);
5273 infiles
[i
].compiled
= true;
5278 create_at_file (argv
);
5281 for (i
= 0; (int) i
< n_infiles
; i
++)
5282 if (compile_input_file_p (&infiles
[i
]))
5284 store_arg (infiles
[i
].name
, 0, 0);
5285 infiles
[i
].compiled
= true;
5290 obstack_grow (&obstack
, gcc_input_filename
,
5291 input_filename_length
);
5298 struct spec_path_info info
;
5302 do_spec_1 ("-imultilib", 1, NULL
);
5303 /* Make this a separate argument. */
5304 do_spec_1 (" ", 0, NULL
);
5305 do_spec_1 (multilib_dir
, 1, NULL
);
5306 do_spec_1 (" ", 0, NULL
);
5311 do_spec_1 ("-imultiarch", 1, NULL
);
5312 /* Make this a separate argument. */
5313 do_spec_1 (" ", 0, NULL
);
5314 do_spec_1 (multiarch_dir
, 1, NULL
);
5315 do_spec_1 (" ", 0, NULL
);
5318 if (gcc_exec_prefix
)
5320 do_spec_1 ("-iprefix", 1, NULL
);
5321 /* Make this a separate argument. */
5322 do_spec_1 (" ", 0, NULL
);
5323 do_spec_1 (gcc_exec_prefix
, 1, NULL
);
5324 do_spec_1 (" ", 0, NULL
);
5327 if (target_system_root_changed
||
5328 (target_system_root
&& target_sysroot_hdrs_suffix
))
5330 do_spec_1 ("-isysroot", 1, NULL
);
5331 /* Make this a separate argument. */
5332 do_spec_1 (" ", 0, NULL
);
5333 do_spec_1 (target_system_root
, 1, NULL
);
5334 if (target_sysroot_hdrs_suffix
)
5335 do_spec_1 (target_sysroot_hdrs_suffix
, 1, NULL
);
5336 do_spec_1 (" ", 0, NULL
);
5339 info
.option
= "-isystem";
5340 info
.append
= "include";
5341 info
.append_len
= strlen (info
.append
);
5342 info
.omit_relative
= false;
5343 info
.separate_options
= true;
5345 for_each_path (&include_prefixes
, false, info
.append_len
,
5348 info
.append
= "include-fixed";
5349 if (*sysroot_hdrs_suffix_spec
)
5350 info
.append
= concat (info
.append
, dir_separator_str
,
5351 multilib_dir
, NULL
);
5352 info
.append_len
= strlen (info
.append
);
5353 for_each_path (&include_prefixes
, false, info
.append_len
,
5360 int max
= n_infiles
;
5361 max
+= lang_specific_extra_outfiles
;
5363 if (HAVE_GNU_LD
&& at_file_supplied
)
5365 /* We are going to expand `%o' to `@FILE', where FILE
5366 is a newly-created temporary filename. The filenames
5367 that would usually be expanded in place of %o will be
5368 written to the temporary file. */
5373 /* Convert OUTFILES into a form suitable for writeargv. */
5375 /* Determine how many are non-NULL. */
5376 for (n_files
= 0, i
= 0; i
< max
; i
++)
5377 n_files
+= outfiles
[i
] != NULL
;
5379 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
5381 /* Copy the strings over. */
5382 for (i
= 0, j
= 0; i
< max
; i
++)
5385 argv
[j
] = CONST_CAST (char *, outfiles
[i
]);
5390 create_at_file (argv
);
5393 for (i
= 0; i
< max
; i
++)
5395 store_arg (outfiles
[i
], 0, 0);
5400 obstack_grow (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
5405 this_is_library_file
= 1;
5409 this_is_linker_script
= 1;
5413 outfiles
[input_file_number
] = NULL
;
5417 this_is_output_file
= 1;
5422 unsigned int cur_index
= argbuf
.length ();
5423 /* Handle the {...} following the %W. */
5425 fatal_error (input_location
,
5426 "spec %qs has invalid %<%%W%c%>", spec
, *p
);
5427 p
= handle_braces (p
+ 1);
5431 /* If any args were output, mark the last one for deletion
5433 if (argbuf
.length () != cur_index
)
5434 record_temp_file (argbuf
.last (), 0, 1);
5438 /* %x{OPTION} records OPTION for %X to output. */
5446 /* Skip past the option value and make a copy. */
5448 fatal_error (input_location
,
5449 "spec %qs has invalid %<%%x%c%>", spec
, *p
);
5452 string
= save_string (p1
+ 1, p
- p1
- 2);
5454 /* See if we already recorded this option. */
5455 FOR_EACH_VEC_ELT (linker_options
, ix
, opt
)
5456 if (! strcmp (string
, opt
))
5462 /* This option is new; add it. */
5463 add_linker_option (string
, strlen (string
));
5468 /* Dump out the options accumulated previously using %x. */
5470 do_specs_vec (linker_options
);
5473 /* Dump out the options accumulated previously using -Wa,. */
5475 do_specs_vec (assembler_options
);
5478 /* Dump out the options accumulated previously using -Wp,. */
5480 do_specs_vec (preprocessor_options
);
5483 /* Here are digits and numbers that just process
5484 a certain constant string as a spec. */
5487 value
= do_spec_1 (cc1_spec
, 0, NULL
);
5493 value
= do_spec_1 (cc1plus_spec
, 0, NULL
);
5499 value
= do_spec_1 (asm_spec
, 0, NULL
);
5505 value
= do_spec_1 (asm_final_spec
, 0, NULL
);
5512 const char *const spec
5513 = (input_file_compiler
->cpp_spec
5514 ? input_file_compiler
->cpp_spec
5516 value
= do_spec_1 (spec
, 0, NULL
);
5523 value
= do_spec_1 (endfile_spec
, 0, NULL
);
5529 value
= do_spec_1 (link_spec
, 0, NULL
);
5535 value
= do_spec_1 (lib_spec
, 0, NULL
);
5541 if (multilib_os_dir
== NULL
)
5542 obstack_1grow (&obstack
, '.');
5544 obstack_grow (&obstack
, multilib_os_dir
,
5545 strlen (multilib_os_dir
));
5549 value
= do_spec_1 (libgcc_spec
, 0, NULL
);
5555 /* We assume there is a directory
5556 separator at the end of this string. */
5557 if (target_system_root
)
5559 obstack_grow (&obstack
, target_system_root
,
5560 strlen (target_system_root
));
5561 if (target_sysroot_suffix
)
5562 obstack_grow (&obstack
, target_sysroot_suffix
,
5563 strlen (target_sysroot_suffix
));
5568 value
= do_spec_1 (startfile_spec
, 0, NULL
);
5573 /* Here we define characters other than letters and digits. */
5576 p
= handle_braces (p
);
5582 p
= handle_spec_function (p
, NULL
);
5588 obstack_1grow (&obstack
, '%');
5595 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '%')
5597 suffix_subst
= save_string (p
- 1, len
+ 1);
5602 /* Henceforth ignore the option(s) matching the pattern
5608 int have_wildcard
= 0;
5613 switch_option
= SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
;
5615 switch_option
= SWITCH_IGNORE
;
5617 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '\t')
5620 if (p
[len
-1] == '*')
5623 for (i
= 0; i
< n_switches
; i
++)
5624 if (!strncmp (switches
[i
].part1
, p
, len
- have_wildcard
)
5625 && (have_wildcard
|| switches
[i
].part1
[len
] == '\0'))
5627 switches
[i
].live_cond
|= switch_option
;
5628 /* User switch be validated from validate_all_switches.
5629 when the definition is seen from the spec file.
5630 If not defined anywhere, will be rejected. */
5631 if (switches
[i
].known
)
5632 switches
[i
].validated
= true;
5640 if (soft_matched_part
)
5642 if (soft_matched_part
[0])
5643 do_spec_1 (soft_matched_part
, 1, NULL
);
5644 /* Only insert a space after the substitution if it is at the
5645 end of the current sequence. So if:
5647 "%{foo=*:bar%*}%{foo=*:one%*two}"
5649 matches -foo=hello then it will produce:
5651 barhello onehellotwo
5653 if (*p
== 0 || *p
== '}')
5654 do_spec_1 (" ", 0, NULL
);
5657 /* Catch the case where a spec string contains something like
5658 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5659 hand side of the :. */
5660 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5663 /* Process a string found as the value of a spec given by name.
5664 This feature allows individual machine descriptions
5665 to add and use their own specs. */
5668 const char *name
= p
;
5669 struct spec_list
*sl
;
5672 /* The string after the S/P is the name of a spec that is to be
5674 while (*p
&& *p
!= ')')
5677 /* See if it's in the list. */
5678 for (len
= p
- name
, sl
= specs
; sl
; sl
= sl
->next
)
5679 if (sl
->name_len
== len
&& !strncmp (sl
->name
, name
, len
))
5681 name
= *(sl
->ptr_spec
);
5683 fnotice (stderr
, "Processing spec (%s), which is '%s'\n",
5691 value
= do_spec_1 (name
, 0, NULL
);
5696 /* Discard the closing paren. */
5703 error ("spec failure: unrecognized spec option %qc", c
);
5709 /* Backslash: treat next character as ordinary. */
5714 /* Ordinary character: put it into the current argument. */
5715 obstack_1grow (&obstack
, c
);
5719 /* End of string. If we are processing a spec function, we need to
5720 end any pending argument. */
5721 if (processing_spec_function
)
5727 /* Look up a spec function. */
5729 static const struct spec_function
*
5730 lookup_spec_function (const char *name
)
5732 const struct spec_function
*sf
;
5734 for (sf
= static_spec_functions
; sf
->name
!= NULL
; sf
++)
5735 if (strcmp (sf
->name
, name
) == 0)
5741 /* Evaluate a spec function. */
5744 eval_spec_function (const char *func
, const char *args
)
5746 const struct spec_function
*sf
;
5747 const char *funcval
;
5749 /* Saved spec processing context. */
5750 vec
<const_char_p
> save_argbuf
;
5753 int save_delete_this_arg
;
5754 int save_this_is_output_file
;
5755 int save_this_is_library_file
;
5756 int save_input_from_pipe
;
5757 int save_this_is_linker_script
;
5758 const char *save_suffix_subst
;
5760 int save_growing_size
;
5761 void *save_growing_value
= NULL
;
5763 sf
= lookup_spec_function (func
);
5765 fatal_error (input_location
, "unknown spec function %qs", func
);
5767 /* Push the spec processing context. */
5768 save_argbuf
= argbuf
;
5770 save_arg_going
= arg_going
;
5771 save_delete_this_arg
= delete_this_arg
;
5772 save_this_is_output_file
= this_is_output_file
;
5773 save_this_is_library_file
= this_is_library_file
;
5774 save_this_is_linker_script
= this_is_linker_script
;
5775 save_input_from_pipe
= input_from_pipe
;
5776 save_suffix_subst
= suffix_subst
;
5778 /* If we have some object growing now, finalize it so the args and function
5779 eval proceed from a cleared context. This is needed to prevent the first
5780 constructed arg from mistakenly including the growing value. We'll push
5781 this value back on the obstack once the function evaluation is done, to
5782 restore a consistent processing context for our caller. This is fine as
5783 the address of growing objects isn't guaranteed to remain stable until
5784 they are finalized, and we expect this situation to be rare enough for
5785 the extra copy not to be an issue. */
5786 save_growing_size
= obstack_object_size (&obstack
);
5787 if (save_growing_size
> 0)
5788 save_growing_value
= obstack_finish (&obstack
);
5790 /* Create a new spec processing context, and build the function
5794 if (do_spec_2 (args
) < 0)
5795 fatal_error (input_location
, "error in args to spec function %qs", func
);
5797 /* argbuf_index is an index for the next argument to be inserted, and
5798 so contains the count of the args already inserted. */
5800 funcval
= (*sf
->func
) (argbuf
.length (),
5803 /* Pop the spec processing context. */
5805 argbuf
= save_argbuf
;
5807 arg_going
= save_arg_going
;
5808 delete_this_arg
= save_delete_this_arg
;
5809 this_is_output_file
= save_this_is_output_file
;
5810 this_is_library_file
= save_this_is_library_file
;
5811 this_is_linker_script
= save_this_is_linker_script
;
5812 input_from_pipe
= save_input_from_pipe
;
5813 suffix_subst
= save_suffix_subst
;
5815 if (save_growing_size
> 0)
5816 obstack_grow (&obstack
, save_growing_value
, save_growing_size
);
5821 /* Handle a spec function call of the form:
5825 ARGS is processed as a spec in a separate context and split into an
5826 argument vector in the normal fashion. The function returns a string
5827 containing a spec which we then process in the caller's context, or
5828 NULL if no processing is required.
5830 If RETVAL_NONNULL is not NULL, then store a bool whether function
5831 returned non-NULL. */
5834 handle_spec_function (const char *p
, bool *retval_nonnull
)
5837 const char *endp
, *funcval
;
5840 processing_spec_function
++;
5842 /* Get the function name. */
5843 for (endp
= p
; *endp
!= '\0'; endp
++)
5845 if (*endp
== '(') /* ) */
5847 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5848 if (!ISALNUM (*endp
) && !(*endp
== '-' || *endp
== '_'))
5849 fatal_error (input_location
, "malformed spec function name");
5851 if (*endp
!= '(') /* ) */
5852 fatal_error (input_location
, "no arguments for spec function");
5853 func
= save_string (p
, endp
- p
);
5856 /* Get the arguments. */
5857 for (count
= 0; *endp
!= '\0'; endp
++)
5866 else if (*endp
== '(') /* ) */
5871 fatal_error (input_location
, "malformed spec function arguments");
5872 args
= save_string (p
, endp
- p
);
5875 /* p now points to just past the end of the spec function expression. */
5877 funcval
= eval_spec_function (func
, args
);
5878 if (funcval
!= NULL
&& do_spec_1 (funcval
, 0, NULL
) < 0)
5881 *retval_nonnull
= funcval
!= NULL
;
5886 processing_spec_function
--;
5891 /* Inline subroutine of handle_braces. Returns true if the current
5892 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5894 input_suffix_matches (const char *atom
, const char *end_atom
)
5896 return (input_suffix
5897 && !strncmp (input_suffix
, atom
, end_atom
- atom
)
5898 && input_suffix
[end_atom
- atom
] == '\0');
5901 /* Subroutine of handle_braces. Returns true if the current
5902 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5904 input_spec_matches (const char *atom
, const char *end_atom
)
5906 return (input_file_compiler
5907 && input_file_compiler
->suffix
5908 && input_file_compiler
->suffix
[0] != '\0'
5909 && !strncmp (input_file_compiler
->suffix
+ 1, atom
,
5911 && input_file_compiler
->suffix
[end_atom
- atom
+ 1] == '\0');
5914 /* Subroutine of handle_braces. Returns true if a switch
5915 matching the atom bracketed by ATOM and END_ATOM appeared on the
5918 switch_matches (const char *atom
, const char *end_atom
, int starred
)
5921 int len
= end_atom
- atom
;
5922 int plen
= starred
? len
: -1;
5924 for (i
= 0; i
< n_switches
; i
++)
5925 if (!strncmp (switches
[i
].part1
, atom
, len
)
5926 && (starred
|| switches
[i
].part1
[len
] == '\0')
5927 && check_live_switch (i
, plen
))
5930 /* Check if a switch with separated form matching the atom.
5931 We check -D and -U switches. */
5932 else if (switches
[i
].args
!= 0)
5934 if ((*switches
[i
].part1
== 'D' || *switches
[i
].part1
== 'U')
5935 && *switches
[i
].part1
== atom
[0])
5937 if (!strncmp (switches
[i
].args
[0], &atom
[1], len
- 1)
5938 && (starred
|| (switches
[i
].part1
[1] == '\0'
5939 && switches
[i
].args
[0][len
- 1] == '\0'))
5940 && check_live_switch (i
, (starred
? 1 : -1)))
5948 /* Inline subroutine of handle_braces. Mark all of the switches which
5949 match ATOM (extends to END_ATOM; STARRED indicates whether there
5950 was a star after the atom) for later processing. */
5952 mark_matching_switches (const char *atom
, const char *end_atom
, int starred
)
5955 int len
= end_atom
- atom
;
5956 int plen
= starred
? len
: -1;
5958 for (i
= 0; i
< n_switches
; i
++)
5959 if (!strncmp (switches
[i
].part1
, atom
, len
)
5960 && (starred
|| switches
[i
].part1
[len
] == '\0')
5961 && check_live_switch (i
, plen
))
5962 switches
[i
].ordering
= 1;
5965 /* Inline subroutine of handle_braces. Process all the currently
5966 marked switches through give_switch, and clear the marks. */
5968 process_marked_switches (void)
5972 for (i
= 0; i
< n_switches
; i
++)
5973 if (switches
[i
].ordering
== 1)
5975 switches
[i
].ordering
= 0;
5980 /* Handle a %{ ... } construct. P points just inside the leading {.
5981 Returns a pointer one past the end of the brace block, or 0
5982 if we call do_spec_1 and that returns -1. */
5985 handle_braces (const char *p
)
5987 const char *atom
, *end_atom
;
5988 const char *d_atom
= NULL
, *d_end_atom
= NULL
;
5989 const char *orig
= p
;
5997 bool a_must_be_last
= false;
5998 bool ordered_set
= false;
5999 bool disjunct_set
= false;
6000 bool disj_matched
= false;
6001 bool disj_starred
= true;
6002 bool n_way_choice
= false;
6003 bool n_way_matched
= false;
6005 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
6012 /* Scan one "atom" (S in the description above of %{}, possibly
6013 with '!', '.', '@', ',', or '*' modifiers). */
6015 a_is_suffix
= false;
6016 a_is_starred
= false;
6017 a_is_negated
= false;
6018 a_is_spectype
= false;
6022 p
++, a_is_negated
= true;
6025 if (*p
== '%' && p
[1] == ':')
6029 p
= handle_spec_function (p
+ 2, &a_matched
);
6034 p
++, a_is_suffix
= true;
6036 p
++, a_is_spectype
= true;
6039 while (ISIDNUM (*p
) || *p
== '-' || *p
== '+' || *p
== '='
6040 || *p
== ',' || *p
== '.' || *p
== '@')
6045 p
++, a_is_starred
= 1;
6052 /* Substitute the switch(es) indicated by the current atom. */
6054 if (disjunct_set
|| n_way_choice
|| a_is_negated
|| a_is_suffix
6055 || a_is_spectype
|| atom
== end_atom
)
6058 mark_matching_switches (atom
, end_atom
, a_is_starred
);
6061 process_marked_switches ();
6065 /* Substitute some text if the current atom appears as a switch
6067 disjunct_set
= true;
6071 if (atom
&& atom
== end_atom
)
6073 if (!n_way_choice
|| disj_matched
|| *p
== '|'
6074 || a_is_negated
|| a_is_suffix
|| a_is_spectype
6078 /* An empty term may appear as the last choice of an
6079 N-way choice set; it means "otherwise". */
6080 a_must_be_last
= true;
6081 disj_matched
= !n_way_matched
;
6082 disj_starred
= false;
6086 if ((a_is_suffix
|| a_is_spectype
) && a_is_starred
)
6090 disj_starred
= false;
6092 /* Don't bother testing this atom if we already have a
6094 if (!disj_matched
&& !n_way_matched
)
6097 /* a_matched is already set by handle_spec_function. */;
6098 else if (a_is_suffix
)
6099 a_matched
= input_suffix_matches (atom
, end_atom
);
6100 else if (a_is_spectype
)
6101 a_matched
= input_spec_matches (atom
, end_atom
);
6103 a_matched
= switch_matches (atom
, end_atom
, a_is_starred
);
6105 if (a_matched
!= a_is_negated
)
6107 disj_matched
= true;
6109 d_end_atom
= end_atom
;
6116 /* Found the body, that is, the text to substitute if the
6117 current disjunction matches. */
6118 p
= process_brace_body (p
+ 1, d_atom
, d_end_atom
, disj_starred
,
6119 disj_matched
&& !n_way_matched
);
6123 /* If we have an N-way choice, reset state for the next
6127 n_way_choice
= true;
6128 n_way_matched
|= disj_matched
;
6129 disj_matched
= false;
6130 disj_starred
= true;
6131 d_atom
= d_end_atom
= NULL
;
6140 while (*p
++ != '}');
6145 fatal_error (input_location
, "braced spec %qs is invalid at %qc", orig
, *p
);
6150 /* Subroutine of handle_braces. Scan and process a brace substitution body
6151 (X in the description of %{} syntax). P points one past the colon;
6152 ATOM and END_ATOM bracket the first atom which was found to be true
6153 (present) in the current disjunction; STARRED indicates whether all
6154 the atoms in the current disjunction were starred (for syntax validation);
6155 MATCHED indicates whether the disjunction matched or not, and therefore
6156 whether or not the body is to be processed through do_spec_1 or just
6157 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
6161 process_brace_body (const char *p
, const char *atom
, const char *end_atom
,
6162 int starred
, int matched
)
6164 const char *body
, *end_body
;
6165 unsigned int nesting_level
;
6166 bool have_subst
= false;
6168 /* Locate the closing } or ;, honoring nested braces.
6169 Trim trailing whitespace. */
6178 if (!--nesting_level
)
6181 else if (*p
== ';' && nesting_level
== 1)
6183 else if (*p
== '%' && p
[1] == '*' && nesting_level
== 1)
6185 else if (*p
== '\0')
6191 while (end_body
[-1] == ' ' || end_body
[-1] == '\t')
6194 if (have_subst
&& !starred
)
6199 /* Copy the substitution body to permanent storage and execute it.
6200 If have_subst is false, this is a simple matter of running the
6201 body through do_spec_1... */
6202 char *string
= save_string (body
, end_body
- body
);
6205 if (do_spec_1 (string
, 0, NULL
) < 0)
6210 /* ... but if have_subst is true, we have to process the
6211 body once for each matching switch, with %* set to the
6212 variant part of the switch. */
6213 unsigned int hard_match_len
= end_atom
- atom
;
6216 for (i
= 0; i
< n_switches
; i
++)
6217 if (!strncmp (switches
[i
].part1
, atom
, hard_match_len
)
6218 && check_live_switch (i
, hard_match_len
))
6220 if (do_spec_1 (string
, 0,
6221 &switches
[i
].part1
[hard_match_len
]) < 0)
6223 /* Pass any arguments this switch has. */
6225 suffix_subst
= NULL
;
6233 fatal_error (input_location
, "braced spec body %qs is invalid", body
);
6236 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
6237 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
6238 spec, or -1 if either exact match or %* is used.
6240 A -O switch is obsoleted by a later -O switch. A -f, -g, -m, or -W switch
6241 whose value does not begin with "no-" is obsoleted by the same value
6242 with the "no-", similarly for a switch with the "no-" prefix. */
6245 check_live_switch (int switchnum
, int prefix_length
)
6247 const char *name
= switches
[switchnum
].part1
;
6250 /* If we already processed this switch and determined if it was
6251 live or not, return our past determination. */
6252 if (switches
[switchnum
].live_cond
!= 0)
6253 return ((switches
[switchnum
].live_cond
& SWITCH_LIVE
) != 0
6254 && (switches
[switchnum
].live_cond
& SWITCH_FALSE
) == 0
6255 && (switches
[switchnum
].live_cond
& SWITCH_IGNORE_PERMANENTLY
)
6258 /* In the common case of {<at-most-one-letter>*}, a negating
6259 switch would always match, so ignore that case. We will just
6260 send the conflicting switches to the compiler phase. */
6261 if (prefix_length
>= 0 && prefix_length
<= 1)
6264 /* Now search for duplicate in a manner that depends on the name. */
6268 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
6269 if (switches
[i
].part1
[0] == 'O')
6271 switches
[switchnum
].validated
= true;
6272 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
6277 case 'W': case 'f': case 'm': case 'g':
6278 if (! strncmp (name
+ 1, "no-", 3))
6280 /* We have Xno-YYY, search for XYYY. */
6281 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
6282 if (switches
[i
].part1
[0] == name
[0]
6283 && ! strcmp (&switches
[i
].part1
[1], &name
[4]))
6285 /* --specs are validated with the validate_switches mechanism. */
6286 if (switches
[switchnum
].known
)
6287 switches
[switchnum
].validated
= true;
6288 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
6294 /* We have XYYY, search for Xno-YYY. */
6295 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
6296 if (switches
[i
].part1
[0] == name
[0]
6297 && switches
[i
].part1
[1] == 'n'
6298 && switches
[i
].part1
[2] == 'o'
6299 && switches
[i
].part1
[3] == '-'
6300 && !strcmp (&switches
[i
].part1
[4], &name
[1]))
6302 /* --specs are validated with the validate_switches mechanism. */
6303 if (switches
[switchnum
].known
)
6304 switches
[switchnum
].validated
= true;
6305 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
6312 /* Otherwise the switch is live. */
6313 switches
[switchnum
].live_cond
|= SWITCH_LIVE
;
6317 /* Pass a switch to the current accumulating command
6318 in the same form that we received it.
6319 SWITCHNUM identifies the switch; it is an index into
6320 the vector of switches gcc received, which is `switches'.
6321 This cannot fail since it never finishes a command line.
6323 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
6326 give_switch (int switchnum
, int omit_first_word
)
6328 if ((switches
[switchnum
].live_cond
& SWITCH_IGNORE
) != 0)
6331 if (!omit_first_word
)
6333 do_spec_1 ("-", 0, NULL
);
6334 do_spec_1 (switches
[switchnum
].part1
, 1, NULL
);
6337 if (switches
[switchnum
].args
!= 0)
6340 for (p
= switches
[switchnum
].args
; *p
; p
++)
6342 const char *arg
= *p
;
6344 do_spec_1 (" ", 0, NULL
);
6347 unsigned length
= strlen (arg
);
6350 while (length
-- && !IS_DIR_SEPARATOR (arg
[length
]))
6351 if (arg
[length
] == '.')
6353 (CONST_CAST (char *, arg
))[length
] = 0;
6357 do_spec_1 (arg
, 1, NULL
);
6359 (CONST_CAST (char *, arg
))[length
] = '.';
6360 do_spec_1 (suffix_subst
, 1, NULL
);
6363 do_spec_1 (arg
, 1, NULL
);
6367 do_spec_1 (" ", 0, NULL
);
6368 switches
[switchnum
].validated
= true;
6371 /* Print GCC configuration (e.g. version, thread model, target,
6372 configuration_arguments) to a given FILE. */
6375 print_configuration (FILE *file
)
6380 fnotice (file
, "Target: %s\n", spec_machine
);
6381 fnotice (file
, "Configured with: %s\n", configuration_arguments
);
6383 #ifdef THREAD_MODEL_SPEC
6384 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6385 but there's no point in doing all this processing just to get
6386 thread_model back. */
6387 obstack_init (&obstack
);
6388 do_spec_1 (THREAD_MODEL_SPEC
, 0, thread_model
);
6389 obstack_1grow (&obstack
, '\0');
6390 thrmod
= XOBFINISH (&obstack
, const char *);
6392 thrmod
= thread_model
;
6395 fnotice (file
, "Thread model: %s\n", thrmod
);
6397 /* compiler_version is truncated at the first space when initialized
6398 from version string, so truncate version_string at the first space
6399 before comparing. */
6400 for (n
= 0; version_string
[n
]; n
++)
6401 if (version_string
[n
] == ' ')
6404 if (! strncmp (version_string
, compiler_version
, n
)
6405 && compiler_version
[n
] == 0)
6406 fnotice (file
, "gcc version %s %s\n", version_string
,
6409 fnotice (file
, "gcc driver version %s %sexecuting gcc version %s\n",
6410 version_string
, pkgversion_string
, compiler_version
);
6414 #define RETRY_ICE_ATTEMPTS 3
6416 /* Returns true if FILE1 and FILE2 contain equivalent data, 0 otherwise. */
6419 files_equal_p (char *file1
, char *file2
)
6421 struct stat st1
, st2
;
6424 const int bufsize
= 8192;
6425 char *buf
= XNEWVEC (char, bufsize
);
6427 fd1
= open (file1
, O_RDONLY
);
6428 fd2
= open (file2
, O_RDONLY
);
6430 if (fd1
< 0 || fd2
< 0)
6433 if (fstat (fd1
, &st1
) < 0 || fstat (fd2
, &st2
) < 0)
6436 if (st1
.st_size
!= st2
.st_size
)
6439 for (n
= st1
.st_size
; n
; n
-= len
)
6442 if ((int) len
> bufsize
/ 2)
6445 if (read (fd1
, buf
, len
) != (int) len
6446 || read (fd2
, buf
+ bufsize
/ 2, len
) != (int) len
)
6451 if (memcmp (buf
, buf
+ bufsize
/ 2, len
) != 0)
6468 /* Check that compiler's output doesn't differ across runs.
6469 TEMP_STDOUT_FILES and TEMP_STDERR_FILES are arrays of files, containing
6470 stdout and stderr for each compiler run. Return true if all of
6471 TEMP_STDOUT_FILES and TEMP_STDERR_FILES are equivalent. */
6474 check_repro (char **temp_stdout_files
, char **temp_stderr_files
)
6477 for (i
= 0; i
< RETRY_ICE_ATTEMPTS
- 2; ++i
)
6479 if (!files_equal_p (temp_stdout_files
[i
], temp_stdout_files
[i
+ 1])
6480 || !files_equal_p (temp_stderr_files
[i
], temp_stderr_files
[i
+ 1]))
6482 fnotice (stderr
, "The bug is not reproducible, so it is"
6483 " likely a hardware or OS problem.\n");
6487 return i
== RETRY_ICE_ATTEMPTS
- 2;
6490 enum attempt_status
{
6491 ATTEMPT_STATUS_FAIL_TO_RUN
,
6492 ATTEMPT_STATUS_SUCCESS
,
6497 /* Run compiler with arguments NEW_ARGV to reproduce the ICE, storing stdout
6498 to OUT_TEMP and stderr to ERR_TEMP. If APPEND is TRUE, append to OUT_TEMP
6499 and ERR_TEMP instead of truncating. If EMIT_SYSTEM_INFO is TRUE, also write
6500 GCC configuration into to ERR_TEMP. Return ATTEMPT_STATUS_FAIL_TO_RUN if
6501 compiler failed to run, ATTEMPT_STATUS_ICE if compiled ICE-ed and
6502 ATTEMPT_STATUS_SUCCESS otherwise. */
6504 static enum attempt_status
6505 run_attempt (const char **new_argv
, const char *out_temp
,
6506 const char *err_temp
, int emit_system_info
, int append
)
6509 if (emit_system_info
)
6511 FILE *file_out
= fopen (err_temp
, "a");
6512 print_configuration (file_out
);
6513 fputs ("\n", file_out
);
6519 struct pex_obj
*pex
;
6521 int pex_flags
= PEX_USE_PIPES
| PEX_LAST
;
6522 enum attempt_status status
= ATTEMPT_STATUS_FAIL_TO_RUN
;
6525 pex_flags
|= PEX_STDOUT_APPEND
| PEX_STDERR_APPEND
;
6527 pex
= pex_init (PEX_USE_PIPES
, new_argv
[0], NULL
);
6529 fatal_error (input_location
, "pex_init failed: %m");
6531 errmsg
= pex_run (pex
, pex_flags
, new_argv
[0],
6532 CONST_CAST2 (char *const *, const char **, &new_argv
[1]), out_temp
,
6537 fatal_error (input_location
, errmsg
);
6541 pfatal_with_name (errmsg
);
6545 if (!pex_get_status (pex
, 1, &exit_status
))
6548 switch (WEXITSTATUS (exit_status
))
6551 status
= ATTEMPT_STATUS_ICE
;
6554 case SUCCESS_EXIT_CODE
:
6555 status
= ATTEMPT_STATUS_SUCCESS
;
6567 /* This routine reads lines from IN file, adds C++ style comments
6568 at the begining of each line and writes result into OUT. */
6571 insert_comments (const char *file_in
, const char *file_out
)
6573 FILE *in
= fopen (file_in
, "rb");
6574 FILE *out
= fopen (file_out
, "wb");
6577 bool add_comment
= true;
6578 while (fgets (line
, sizeof (line
), in
))
6583 add_comment
= strchr (line
, '\n') != NULL
;
6590 /* This routine adds preprocessed source code into the given ERR_FILE.
6591 To do this, it adds "-E" to NEW_ARGV and execute RUN_ATTEMPT routine to
6592 add information in report file. RUN_ATTEMPT should return
6593 ATTEMPT_STATUS_SUCCESS, in other case we cannot generate the report. */
6596 do_report_bug (const char **new_argv
, const int nargs
,
6597 char **out_file
, char **err_file
)
6600 int fd
= open (*out_file
, O_RDWR
| O_APPEND
);
6603 write (fd
, "\n//", 3);
6604 for (i
= 0; i
< nargs
; i
++)
6607 write (fd
, new_argv
[i
], strlen (new_argv
[i
]));
6609 write (fd
, "\n\n", 2);
6611 new_argv
[nargs
] = "-E";
6612 new_argv
[nargs
+ 1] = NULL
;
6614 status
= run_attempt (new_argv
, *out_file
, *err_file
, 0, 1);
6616 if (status
== ATTEMPT_STATUS_SUCCESS
)
6618 fnotice (stderr
, "Preprocessed source stored into %s file,"
6619 " please attach this to your bugreport.\n", *out_file
);
6620 /* Make sure it is not deleted. */
6626 /* Try to reproduce ICE. If bug is reproducible, generate report .err file
6627 containing GCC configuration, backtrace, compiler's command line options
6628 and preprocessed source code. */
6631 try_generate_repro (const char **argv
)
6633 int i
, nargs
, out_arg
= -1, quiet
= 0, attempt
;
6634 const char **new_argv
;
6635 char *temp_files
[RETRY_ICE_ATTEMPTS
* 2];
6636 char **temp_stdout_files
= &temp_files
[0];
6637 char **temp_stderr_files
= &temp_files
[RETRY_ICE_ATTEMPTS
];
6639 if (gcc_input_filename
== NULL
|| ! strcmp (gcc_input_filename
, "-"))
6642 for (nargs
= 0; argv
[nargs
] != NULL
; ++nargs
)
6643 /* Only retry compiler ICEs, not preprocessor ones. */
6644 if (! strcmp (argv
[nargs
], "-E"))
6646 else if (argv
[nargs
][0] == '-' && argv
[nargs
][1] == 'o')
6653 /* If the compiler is going to output any time information,
6654 it might varry between invocations. */
6655 else if (! strcmp (argv
[nargs
], "-quiet"))
6657 else if (! strcmp (argv
[nargs
], "-ftime-report"))
6660 if (out_arg
== -1 || !quiet
)
6663 memset (temp_files
, '\0', sizeof (temp_files
));
6664 new_argv
= XALLOCAVEC (const char *, nargs
+ 4);
6665 memcpy (new_argv
, argv
, (nargs
+ 1) * sizeof (const char *));
6666 new_argv
[nargs
++] = "-frandom-seed=0";
6667 new_argv
[nargs
++] = "-fdump-noaddr";
6668 new_argv
[nargs
] = NULL
;
6669 if (new_argv
[out_arg
][2] == '\0')
6670 new_argv
[out_arg
+ 1] = "-";
6672 new_argv
[out_arg
] = "-o-";
6675 for (attempt
= 0; attempt
< RETRY_ICE_ATTEMPTS
; ++attempt
)
6677 int emit_system_info
= 0;
6679 temp_stdout_files
[attempt
] = make_temp_file (".out");
6680 temp_stderr_files
[attempt
] = make_temp_file (".err");
6682 if (attempt
== RETRY_ICE_ATTEMPTS
- 1)
6685 emit_system_info
= 1;
6688 status
= run_attempt (new_argv
, temp_stdout_files
[attempt
],
6689 temp_stderr_files
[attempt
], emit_system_info
,
6692 if (status
!= ATTEMPT_STATUS_ICE
)
6694 fnotice (stderr
, "The bug is not reproducible, so it is"
6695 " likely a hardware or OS problem.\n");
6700 if (!check_repro (temp_stdout_files
, temp_stderr_files
))
6704 /* Insert commented out backtrace into report file. */
6705 char **stderr_commented
= &temp_stdout_files
[RETRY_ICE_ATTEMPTS
- 1];
6706 insert_comments (temp_stderr_files
[RETRY_ICE_ATTEMPTS
- 1],
6709 /* In final attempt we append compiler options and preprocesssed code to last
6710 generated .out file with configuration and backtrace. */
6711 char **output
= &temp_stdout_files
[RETRY_ICE_ATTEMPTS
- 1];
6712 do_report_bug (new_argv
, nargs
, stderr_commented
, output
);
6716 for (i
= 0; i
< RETRY_ICE_ATTEMPTS
* 2; i
++)
6719 unlink (temp_stdout_files
[i
]);
6720 free (temp_stdout_files
[i
]);
6724 /* Search for a file named NAME trying various prefixes including the
6725 user's -B prefix and some standard ones.
6726 Return the absolute file name found. If nothing is found, return NAME. */
6729 find_file (const char *name
)
6731 char *newname
= find_a_file (&startfile_prefixes
, name
, R_OK
, true);
6732 return newname
? newname
: name
;
6735 /* Determine whether a directory exists. If LINKER, return 0 for
6736 certain fixed names not needed by the linker. */
6739 is_directory (const char *path1
, bool linker
)
6746 /* Ensure the string ends with "/.". The resulting path will be a
6747 directory even if the given path is a symbolic link. */
6748 len1
= strlen (path1
);
6749 path
= (char *) alloca (3 + len1
);
6750 memcpy (path
, path1
, len1
);
6752 if (!IS_DIR_SEPARATOR (cp
[-1]))
6753 *cp
++ = DIR_SEPARATOR
;
6757 /* Exclude directories that the linker is known to search. */
6759 && IS_DIR_SEPARATOR (path
[0])
6761 && filename_ncmp (path
+ 1, "lib", 3) == 0)
6763 && filename_ncmp (path
+ 1, "usr", 3) == 0
6764 && IS_DIR_SEPARATOR (path
[4])
6765 && filename_ncmp (path
+ 5, "lib", 3) == 0)))
6768 return (stat (path
, &st
) >= 0 && S_ISDIR (st
.st_mode
));
6771 /* Set up the various global variables to indicate that we're processing
6772 the input file named FILENAME. */
6775 set_input (const char *filename
)
6779 gcc_input_filename
= filename
;
6780 input_filename_length
= strlen (gcc_input_filename
);
6781 input_basename
= lbasename (gcc_input_filename
);
6783 /* Find a suffix starting with the last period,
6784 and set basename_length to exclude that suffix. */
6785 basename_length
= strlen (input_basename
);
6786 suffixed_basename_length
= basename_length
;
6787 p
= input_basename
+ basename_length
;
6788 while (p
!= input_basename
&& *p
!= '.')
6790 if (*p
== '.' && p
!= input_basename
)
6792 basename_length
= p
- input_basename
;
6793 input_suffix
= p
+ 1;
6798 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
6799 we will need to do a stat on the gcc_input_filename. The
6800 INPUT_STAT_SET signals that the stat is needed. */
6804 /* On fatal signals, delete all the temporary files. */
6807 fatal_signal (int signum
)
6809 signal (signum
, SIG_DFL
);
6810 delete_failure_queue ();
6811 delete_temp_files ();
6812 /* Get the same signal again, this time not handled,
6813 so its normal effect occurs. */
6814 kill (getpid (), signum
);
6817 /* Compare the contents of the two files named CMPFILE[0] and
6818 CMPFILE[1]. Return zero if they're identical, nonzero
6822 compare_files (char *cmpfile
[])
6825 FILE *temp
[2] = { NULL
, NULL
};
6831 void *map
[2] = { NULL
, NULL
};
6833 for (i
= 0; i
< 2; i
++)
6837 if (stat (cmpfile
[i
], &st
) < 0 || !S_ISREG (st
.st_mode
))
6839 error ("%s: could not determine length of compare-debug file %s",
6840 gcc_input_filename
, cmpfile
[i
]);
6845 length
[i
] = st
.st_size
;
6848 if (!ret
&& length
[0] != length
[1])
6850 error ("%s: -fcompare-debug failure (length)", gcc_input_filename
);
6855 for (i
= 0; i
< 2; i
++)
6857 int fd
= open (cmpfile
[i
], O_RDONLY
);
6860 error ("%s: could not open compare-debug file %s",
6861 gcc_input_filename
, cmpfile
[i
]);
6866 map
[i
] = mmap (NULL
, length
[i
], PROT_READ
, MAP_PRIVATE
, fd
, 0);
6869 if (map
[i
] == (void *) MAP_FAILED
)
6878 if (memcmp (map
[0], map
[1], length
[0]) != 0)
6880 error ("%s: -fcompare-debug failure", gcc_input_filename
);
6885 for (i
= 0; i
< 2; i
++)
6887 munmap ((caddr_t
) map
[i
], length
[i
]);
6896 for (i
= 0; i
< 2; i
++)
6898 temp
[i
] = fopen (cmpfile
[i
], "r");
6901 error ("%s: could not open compare-debug file %s",
6902 gcc_input_filename
, cmpfile
[i
]);
6908 if (!ret
&& temp
[0] && temp
[1])
6912 c0
= fgetc (temp
[0]);
6913 c1
= fgetc (temp
[1]);
6917 error ("%s: -fcompare-debug failure",
6918 gcc_input_filename
);
6927 for (i
= 1; i
>= 0; i
--)
6936 /* driver::main is implemented as a series of driver:: method calls. */
6939 driver::main (int argc
, char **argv
)
6943 set_progname (argv
[0]);
6944 expand_at_files (&argc
, &argv
);
6945 decode_argv (argc
, const_cast <const char **> (argv
));
6946 global_initializations ();
6947 build_multilib_strings ();
6949 putenv_COLLECT_GCC (argv
[0]);
6950 maybe_putenv_COLLECT_LTO_WRAPPER ();
6951 maybe_putenv_OFFLOAD_TARGETS ();
6952 handle_unrecognized_options ();
6954 if (!maybe_print_and_exit ())
6957 early_exit
= prepare_infiles ();
6959 return get_exit_code ();
6961 do_spec_on_infiles ();
6962 maybe_run_linker (argv
[0]);
6964 return get_exit_code ();
6967 /* Locate the final component of argv[0] after any leading path, and set
6968 the program name accordingly. */
6971 driver::set_progname (const char *argv0
) const
6973 const char *p
= argv0
+ strlen (argv0
);
6974 while (p
!= argv0
&& !IS_DIR_SEPARATOR (p
[-1]))
6978 xmalloc_set_program_name (progname
);
6981 /* Expand any @ files within the command-line args,
6982 setting at_file_supplied if any were expanded. */
6985 driver::expand_at_files (int *argc
, char ***argv
) const
6987 char **old_argv
= *argv
;
6989 expandargv (argc
, argv
);
6991 /* Determine if any expansions were made. */
6992 if (*argv
!= old_argv
)
6993 at_file_supplied
= true;
6996 /* Decode the command-line arguments from argc/argv into the
6997 decoded_options array. */
7000 driver::decode_argv (int argc
, const char **argv
)
7002 /* Register the language-independent parameters. */
7003 global_init_params ();
7006 init_options_struct (&global_options
, &global_options_set
);
7008 decode_cmdline_options_to_array (argc
, argv
,
7010 &decoded_options
, &decoded_options_count
);
7013 /* Perform various initializations and setup. */
7016 driver::global_initializations ()
7018 /* Unlock the stdio streams. */
7019 unlock_std_streams ();
7021 gcc_init_libintl ();
7023 diagnostic_initialize (global_dc
, 0);
7024 diagnostic_color_init (global_dc
);
7026 #ifdef GCC_DRIVER_HOST_INITIALIZATION
7027 /* Perform host dependent initialization when needed. */
7028 GCC_DRIVER_HOST_INITIALIZATION
;
7031 if (atexit (delete_temp_files
) != 0)
7032 fatal_error (input_location
, "atexit failed");
7034 if (signal (SIGINT
, SIG_IGN
) != SIG_IGN
)
7035 signal (SIGINT
, fatal_signal
);
7037 if (signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
7038 signal (SIGHUP
, fatal_signal
);
7040 if (signal (SIGTERM
, SIG_IGN
) != SIG_IGN
)
7041 signal (SIGTERM
, fatal_signal
);
7043 if (signal (SIGPIPE
, SIG_IGN
) != SIG_IGN
)
7044 signal (SIGPIPE
, fatal_signal
);
7047 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
7048 receive the signal. A different setting is inheritable */
7049 signal (SIGCHLD
, SIG_DFL
);
7052 /* Parsing and gimplification sometimes need quite large stack.
7053 Increase stack size limits if possible. */
7054 stack_limit_increase (64 * 1024 * 1024);
7056 /* Allocate the argument vector. */
7059 obstack_init (&obstack
);
7062 /* Build multilib_select, et. al from the separate lines that make up each
7063 multilib selection. */
7066 driver::build_multilib_strings () const
7070 const char *const *q
= multilib_raw
;
7073 obstack_init (&multilib_obstack
);
7074 while ((p
= *q
++) != (char *) 0)
7075 obstack_grow (&multilib_obstack
, p
, strlen (p
));
7077 obstack_1grow (&multilib_obstack
, 0);
7078 multilib_select
= XOBFINISH (&multilib_obstack
, const char *);
7080 q
= multilib_matches_raw
;
7081 while ((p
= *q
++) != (char *) 0)
7082 obstack_grow (&multilib_obstack
, p
, strlen (p
));
7084 obstack_1grow (&multilib_obstack
, 0);
7085 multilib_matches
= XOBFINISH (&multilib_obstack
, const char *);
7087 q
= multilib_exclusions_raw
;
7088 while ((p
= *q
++) != (char *) 0)
7089 obstack_grow (&multilib_obstack
, p
, strlen (p
));
7091 obstack_1grow (&multilib_obstack
, 0);
7092 multilib_exclusions
= XOBFINISH (&multilib_obstack
, const char *);
7094 q
= multilib_reuse_raw
;
7095 while ((p
= *q
++) != (char *) 0)
7096 obstack_grow (&multilib_obstack
, p
, strlen (p
));
7098 obstack_1grow (&multilib_obstack
, 0);
7099 multilib_reuse
= XOBFINISH (&multilib_obstack
, const char *);
7102 for (size_t i
= 0; i
< ARRAY_SIZE (multilib_defaults_raw
); i
++)
7105 obstack_1grow (&multilib_obstack
, ' ');
7106 obstack_grow (&multilib_obstack
,
7107 multilib_defaults_raw
[i
],
7108 strlen (multilib_defaults_raw
[i
]));
7112 obstack_1grow (&multilib_obstack
, 0);
7113 multilib_defaults
= XOBFINISH (&multilib_obstack
, const char *);
7117 /* Set up the spec-handling machinery. */
7120 driver::set_up_specs () const
7122 const char *spec_machine_suffix
;
7126 #ifdef INIT_ENVIRONMENT
7127 /* Set up any other necessary machine specific environment variables. */
7128 xputenv (INIT_ENVIRONMENT
);
7131 /* Make a table of what switches there are (switches, n_switches).
7132 Make a table of specified input files (infiles, n_infiles).
7133 Decode switches that are handled locally. */
7135 process_command (decoded_options_count
, decoded_options
);
7137 /* Initialize the vector of specs to just the default.
7138 This means one element containing 0s, as a terminator. */
7140 compilers
= XNEWVAR (struct compiler
, sizeof default_compilers
);
7141 memcpy (compilers
, default_compilers
, sizeof default_compilers
);
7142 n_compilers
= n_default_compilers
;
7144 /* Read specs from a file if there is one. */
7146 machine_suffix
= concat (spec_host_machine
, dir_separator_str
, spec_version
,
7147 accel_dir_suffix
, dir_separator_str
, NULL
);
7148 just_machine_suffix
= concat (spec_machine
, dir_separator_str
, NULL
);
7150 specs_file
= find_a_file (&startfile_prefixes
, "specs", R_OK
, true);
7151 /* Read the specs file unless it is a default one. */
7152 if (specs_file
!= 0 && strcmp (specs_file
, "specs"))
7153 read_specs (specs_file
, true, false);
7157 #ifdef ACCEL_COMPILER
7158 spec_machine_suffix
= machine_suffix
;
7160 spec_machine_suffix
= just_machine_suffix
;
7163 /* We need to check standard_exec_prefix/spec_machine_suffix/specs
7164 for any override of as, ld and libraries. */
7165 specs_file
= (char *) alloca (strlen (standard_exec_prefix
)
7166 + strlen (spec_machine_suffix
) + sizeof ("specs"));
7167 strcpy (specs_file
, standard_exec_prefix
);
7168 strcat (specs_file
, spec_machine_suffix
);
7169 strcat (specs_file
, "specs");
7170 if (access (specs_file
, R_OK
) == 0)
7171 read_specs (specs_file
, true, false);
7173 /* Process any configure-time defaults specified for the command line
7174 options, via OPTION_DEFAULT_SPECS. */
7175 for (i
= 0; i
< ARRAY_SIZE (option_default_specs
); i
++)
7176 do_option_spec (option_default_specs
[i
].name
,
7177 option_default_specs
[i
].spec
);
7179 /* Process DRIVER_SELF_SPECS, adding any new options to the end
7180 of the command line. */
7182 for (i
= 0; i
< ARRAY_SIZE (driver_self_specs
); i
++)
7183 do_self_spec (driver_self_specs
[i
]);
7185 /* If not cross-compiling, look for executables in the standard
7187 if (*cross_compile
== '0')
7189 if (*md_exec_prefix
)
7191 add_prefix (&exec_prefixes
, md_exec_prefix
, "GCC",
7192 PREFIX_PRIORITY_LAST
, 0, 0);
7196 /* Process sysroot_suffix_spec. */
7197 if (*sysroot_suffix_spec
!= 0
7198 && !no_sysroot_suffix
7199 && do_spec_2 (sysroot_suffix_spec
) == 0)
7201 if (argbuf
.length () > 1)
7202 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
7203 else if (argbuf
.length () == 1)
7204 target_sysroot_suffix
= xstrdup (argbuf
.last ());
7207 #ifdef HAVE_LD_SYSROOT
7208 /* Pass the --sysroot option to the linker, if it supports that. If
7209 there is a sysroot_suffix_spec, it has already been processed by
7210 this point, so target_system_root really is the system root we
7212 if (target_system_root
)
7214 obstack_grow (&obstack
, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
7215 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
7216 set_spec ("link", XOBFINISH (&obstack
, const char *), false);
7220 /* Process sysroot_hdrs_suffix_spec. */
7221 if (*sysroot_hdrs_suffix_spec
!= 0
7222 && !no_sysroot_suffix
7223 && do_spec_2 (sysroot_hdrs_suffix_spec
) == 0)
7225 if (argbuf
.length () > 1)
7226 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
7227 else if (argbuf
.length () == 1)
7228 target_sysroot_hdrs_suffix
= xstrdup (argbuf
.last ());
7231 /* Look for startfiles in the standard places. */
7232 if (*startfile_prefix_spec
!= 0
7233 && do_spec_2 (startfile_prefix_spec
) == 0
7234 && do_spec_1 (" ", 0, NULL
) == 0)
7238 FOR_EACH_VEC_ELT (argbuf
, ndx
, arg
)
7239 add_sysrooted_prefix (&startfile_prefixes
, arg
, "BINUTILS",
7240 PREFIX_PRIORITY_LAST
, 0, 1);
7242 /* We should eventually get rid of all these and stick to
7243 startfile_prefix_spec exclusively. */
7244 else if (*cross_compile
== '0' || target_system_root
)
7246 if (*md_startfile_prefix
)
7247 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix
,
7248 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
7250 if (*md_startfile_prefix_1
)
7251 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix_1
,
7252 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
7254 /* If standard_startfile_prefix is relative, base it on
7255 standard_exec_prefix. This lets us move the installed tree
7256 as a unit. If GCC_EXEC_PREFIX is defined, base
7257 standard_startfile_prefix on that as well.
7259 If the prefix is relative, only search it for native compilers;
7260 otherwise we will search a directory containing host libraries. */
7261 if (IS_ABSOLUTE_PATH (standard_startfile_prefix
))
7262 add_sysrooted_prefix (&startfile_prefixes
,
7263 standard_startfile_prefix
, "BINUTILS",
7264 PREFIX_PRIORITY_LAST
, 0, 1);
7265 else if (*cross_compile
== '0')
7267 add_prefix (&startfile_prefixes
,
7268 concat (gcc_exec_prefix
7269 ? gcc_exec_prefix
: standard_exec_prefix
,
7271 standard_startfile_prefix
, NULL
),
7272 NULL
, PREFIX_PRIORITY_LAST
, 0, 1);
7275 /* Sysrooted prefixes are relocated because target_system_root is
7276 also relocated by gcc_exec_prefix. */
7277 if (*standard_startfile_prefix_1
)
7278 add_sysrooted_prefix (&startfile_prefixes
,
7279 standard_startfile_prefix_1
, "BINUTILS",
7280 PREFIX_PRIORITY_LAST
, 0, 1);
7281 if (*standard_startfile_prefix_2
)
7282 add_sysrooted_prefix (&startfile_prefixes
,
7283 standard_startfile_prefix_2
, "BINUTILS",
7284 PREFIX_PRIORITY_LAST
, 0, 1);
7287 /* Process any user specified specs in the order given on the command
7289 for (struct user_specs
*uptr
= user_specs_head
; uptr
; uptr
= uptr
->next
)
7291 char *filename
= find_a_file (&startfile_prefixes
, uptr
->filename
,
7293 read_specs (filename
? filename
: uptr
->filename
, false, true);
7296 /* Process any user self specs. */
7298 struct spec_list
*sl
;
7299 for (sl
= specs
; sl
; sl
= sl
->next
)
7300 if (sl
->name_len
== sizeof "self_spec" - 1
7301 && !strcmp (sl
->name
, "self_spec"))
7302 do_self_spec (*sl
->ptr_spec
);
7307 enum save_temps save
;
7309 if (!compare_debug_second
)
7311 n_switches_debug_check
[1] = n_switches
;
7312 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
7313 switches_debug_check
[1] = XDUPVEC (struct switchstr
, switches
,
7316 do_self_spec ("%:compare-debug-self-opt()");
7317 n_switches_debug_check
[0] = n_switches
;
7318 n_switches_alloc_debug_check
[0] = n_switches_alloc
;
7319 switches_debug_check
[0] = switches
;
7321 n_switches
= n_switches_debug_check
[1];
7322 n_switches_alloc
= n_switches_alloc_debug_check
[1];
7323 switches
= switches_debug_check
[1];
7326 /* Avoid crash when computing %j in this early. */
7327 save
= save_temps_flag
;
7328 save_temps_flag
= SAVE_TEMPS_NONE
;
7330 compare_debug
= -compare_debug
;
7331 do_self_spec ("%:compare-debug-self-opt()");
7333 save_temps_flag
= save
;
7335 if (!compare_debug_second
)
7337 n_switches_debug_check
[1] = n_switches
;
7338 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
7339 switches_debug_check
[1] = switches
;
7340 compare_debug
= -compare_debug
;
7341 n_switches
= n_switches_debug_check
[0];
7342 n_switches_alloc
= n_switches_debug_check
[0];
7343 switches
= switches_debug_check
[0];
7348 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
7349 if (gcc_exec_prefix
)
7350 gcc_exec_prefix
= concat (gcc_exec_prefix
, spec_host_machine
,
7351 dir_separator_str
, spec_version
,
7352 accel_dir_suffix
, dir_separator_str
, NULL
);
7354 /* Now we have the specs.
7355 Set the `valid' bits for switches that match anything in any spec. */
7357 validate_all_switches ();
7359 /* Now that we have the switches and the specs, set
7360 the subdirectory based on the options. */
7361 set_multilib_dir ();
7364 /* Set up to remember the pathname of gcc and any options
7365 needed for collect. We use argv[0] instead of progname because
7366 we need the complete pathname. */
7369 driver::putenv_COLLECT_GCC (const char *argv0
) const
7371 obstack_init (&collect_obstack
);
7372 obstack_grow (&collect_obstack
, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
7373 obstack_grow (&collect_obstack
, argv0
, strlen (argv0
) + 1);
7374 xputenv (XOBFINISH (&collect_obstack
, char *));
7377 /* Set up to remember the pathname of the lto wrapper. */
7380 driver::maybe_putenv_COLLECT_LTO_WRAPPER () const
7382 char *lto_wrapper_file
;
7385 lto_wrapper_file
= NULL
;
7387 lto_wrapper_file
= find_a_file (&exec_prefixes
, "lto-wrapper",
7389 if (lto_wrapper_file
)
7391 lto_wrapper_file
= convert_white_space (lto_wrapper_file
);
7392 lto_wrapper_spec
= lto_wrapper_file
;
7393 obstack_init (&collect_obstack
);
7394 obstack_grow (&collect_obstack
, "COLLECT_LTO_WRAPPER=",
7395 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
7396 obstack_grow (&collect_obstack
, lto_wrapper_spec
,
7397 strlen (lto_wrapper_spec
) + 1);
7398 xputenv (XOBFINISH (&collect_obstack
, char *));
7403 /* Set up to remember the names of offload targets. */
7406 driver::maybe_putenv_OFFLOAD_TARGETS () const
7408 const char *targets
= offload_targets
;
7410 /* If no targets specified by -foffload, use all available targets. */
7412 targets
= OFFLOAD_TARGETS
;
7414 if (strlen (targets
) > 0)
7416 obstack_grow (&collect_obstack
, "OFFLOAD_TARGET_NAMES=",
7417 sizeof ("OFFLOAD_TARGET_NAMES=") - 1);
7418 obstack_grow (&collect_obstack
, targets
,
7419 strlen (targets
) + 1);
7420 xputenv (XOBFINISH (&collect_obstack
, char *));
7423 free (offload_targets
);
7426 /* Reject switches that no pass was interested in. */
7429 driver::handle_unrecognized_options () const
7431 for (size_t i
= 0; (int) i
< n_switches
; i
++)
7432 if (! switches
[i
].validated
)
7433 error ("unrecognized command line option %<-%s%>", switches
[i
].part1
);
7436 /* Handle the various -print-* options, returning 0 if the driver
7437 should exit, or nonzero if the driver should continue. */
7440 driver::maybe_print_and_exit () const
7442 if (print_search_dirs
)
7444 printf (_("install: %s%s\n"),
7445 gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
7446 gcc_exec_prefix
? "" : machine_suffix
);
7447 printf (_("programs: %s\n"),
7448 build_search_list (&exec_prefixes
, "", false, false));
7449 printf (_("libraries: %s\n"),
7450 build_search_list (&startfile_prefixes
, "", false, true));
7454 if (print_file_name
)
7456 printf ("%s\n", find_file (print_file_name
));
7460 if (print_prog_name
)
7462 if (use_ld
!= NULL
&& ! strcmp (print_prog_name
, "ld"))
7464 /* Append USE_LD to to the default linker. */
7465 #ifdef DEFAULT_LINKER
7467 # ifdef HAVE_HOST_EXECUTABLE_SUFFIX
7468 int len
= (sizeof (DEFAULT_LINKER
)
7469 - sizeof (HOST_EXECUTABLE_SUFFIX
));
7473 char *default_linker
= xstrdup (DEFAULT_LINKER
);
7474 /* Strip HOST_EXECUTABLE_SUFFIX if DEFAULT_LINKER contains
7475 HOST_EXECUTABLE_SUFFIX. */
7476 if (! strcmp (&default_linker
[len
], HOST_EXECUTABLE_SUFFIX
))
7478 default_linker
[len
] = '\0';
7479 ld
= concat (default_linker
, use_ld
,
7480 HOST_EXECUTABLE_SUFFIX
, NULL
);
7485 ld
= concat (DEFAULT_LINKER
, use_ld
, NULL
);
7486 if (access (ld
, X_OK
) == 0)
7488 printf ("%s\n", ld
);
7492 print_prog_name
= concat (print_prog_name
, use_ld
, NULL
);
7494 char *newname
= find_a_file (&exec_prefixes
, print_prog_name
, X_OK
, 0);
7495 printf ("%s\n", (newname
? newname
: print_prog_name
));
7499 if (print_multi_lib
)
7501 print_multilib_info ();
7505 if (print_multi_directory
)
7507 if (multilib_dir
== NULL
)
7510 printf ("%s\n", multilib_dir
);
7514 if (print_multiarch
)
7516 if (multiarch_dir
== NULL
)
7519 printf ("%s\n", multiarch_dir
);
7525 if (target_system_root
)
7527 if (target_sysroot_suffix
)
7528 printf ("%s%s\n", target_system_root
, target_sysroot_suffix
);
7530 printf ("%s\n", target_system_root
);
7535 if (print_multi_os_directory
)
7537 if (multilib_os_dir
== NULL
)
7540 printf ("%s\n", multilib_os_dir
);
7544 if (print_sysroot_headers_suffix
)
7546 if (*sysroot_hdrs_suffix_spec
)
7548 printf("%s\n", (target_sysroot_hdrs_suffix
7549 ? target_sysroot_hdrs_suffix
7554 /* The error status indicates that only one set of fixed
7555 headers should be built. */
7556 fatal_error (input_location
,
7557 "not configured with sysroot headers suffix");
7560 if (print_help_list
)
7566 printf (_("\nFor bug reporting instructions, please see:\n"));
7567 printf ("%s.\n", bug_report_url
);
7572 /* We do not exit here. Instead we have created a fake input file
7573 called 'help-dummy' which needs to be compiled, and we pass this
7574 on the various sub-processes, along with the --help switch.
7575 Ensure their output appears after ours. */
7576 fputc ('\n', stdout
);
7582 printf (_("%s %s%s\n"), progname
, pkgversion_string
,
7584 printf ("Copyright %s 2015 Free Software Foundation, Inc.\n",
7586 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
7587 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
7592 /* We do not exit here. We use the same mechanism of --help to print
7593 the version of the sub-processes. */
7594 fputc ('\n', stdout
);
7600 print_configuration (stderr
);
7608 /* Figure out what to do with each input file.
7609 Return true if we need to exit early from "main", false otherwise. */
7612 driver::prepare_infiles ()
7615 int lang_n_infiles
= 0;
7617 if (n_infiles
== added_libraries
)
7618 fatal_error (input_location
, "no input files");
7621 /* Early exit needed from main. */
7624 /* Make a place to record the compiler output file names
7625 that correspond to the input files. */
7628 i
+= lang_specific_extra_outfiles
;
7629 outfiles
= XCNEWVEC (const char *, i
);
7631 /* Record which files were specified explicitly as link input. */
7633 explicit_link_files
= XCNEWVEC (char, n_infiles
);
7635 combine_inputs
= have_o
|| flag_wpa
;
7637 for (i
= 0; (int) i
< n_infiles
; i
++)
7639 const char *name
= infiles
[i
].name
;
7640 struct compiler
*compiler
= lookup_compiler (name
,
7642 infiles
[i
].language
);
7644 if (compiler
&& !(compiler
->combinable
))
7645 combine_inputs
= false;
7647 if (lang_n_infiles
> 0 && compiler
!= input_file_compiler
7648 && infiles
[i
].language
&& infiles
[i
].language
[0] != '*')
7649 infiles
[i
].incompiler
= compiler
;
7653 input_file_compiler
= compiler
;
7654 infiles
[i
].incompiler
= compiler
;
7658 /* Since there is no compiler for this input file, assume it is a
7660 explicit_link_files
[i
] = 1;
7661 infiles
[i
].incompiler
= NULL
;
7663 infiles
[i
].compiled
= false;
7664 infiles
[i
].preprocessed
= false;
7667 if (!combine_inputs
&& have_c
&& have_o
&& lang_n_infiles
> 1)
7668 fatal_error (input_location
,
7669 "cannot specify -o with -c, -S or -E with multiple files");
7671 /* No early exit needed from main; we can continue. */
7675 /* Run the spec machinery on each input file. */
7678 driver::do_spec_on_infiles () const
7682 for (i
= 0; (int) i
< n_infiles
; i
++)
7684 int this_file_error
= 0;
7686 /* Tell do_spec what to substitute for %i. */
7688 input_file_number
= i
;
7689 set_input (infiles
[i
].name
);
7691 if (infiles
[i
].compiled
)
7694 /* Use the same thing in %o, unless cp->spec says otherwise. */
7696 outfiles
[i
] = gcc_input_filename
;
7698 /* Figure out which compiler from the file's suffix. */
7701 = lookup_compiler (infiles
[i
].name
, input_filename_length
,
7702 infiles
[i
].language
);
7704 if (input_file_compiler
)
7706 /* Ok, we found an applicable compiler. Run its spec. */
7708 if (input_file_compiler
->spec
[0] == '#')
7710 error ("%s: %s compiler not installed on this system",
7711 gcc_input_filename
, &input_file_compiler
->spec
[1]);
7712 this_file_error
= 1;
7720 free (debug_check_temp_file
[0]);
7721 debug_check_temp_file
[0] = NULL
;
7723 free (debug_check_temp_file
[1]);
7724 debug_check_temp_file
[1] = NULL
;
7727 value
= do_spec (input_file_compiler
->spec
);
7728 infiles
[i
].compiled
= true;
7730 this_file_error
= 1;
7731 else if (compare_debug
&& debug_check_temp_file
[0])
7734 inform (0, "recompiling with -fcompare-debug");
7736 compare_debug
= -compare_debug
;
7737 n_switches
= n_switches_debug_check
[1];
7738 n_switches_alloc
= n_switches_alloc_debug_check
[1];
7739 switches
= switches_debug_check
[1];
7741 value
= do_spec (input_file_compiler
->spec
);
7743 compare_debug
= -compare_debug
;
7744 n_switches
= n_switches_debug_check
[0];
7745 n_switches_alloc
= n_switches_alloc_debug_check
[0];
7746 switches
= switches_debug_check
[0];
7750 error ("during -fcompare-debug recompilation");
7751 this_file_error
= 1;
7754 gcc_assert (debug_check_temp_file
[1]
7755 && filename_cmp (debug_check_temp_file
[0],
7756 debug_check_temp_file
[1]));
7759 inform (0, "comparing final insns dumps");
7761 if (compare_files (debug_check_temp_file
))
7762 this_file_error
= 1;
7767 free (debug_check_temp_file
[0]);
7768 debug_check_temp_file
[0] = NULL
;
7770 free (debug_check_temp_file
[1]);
7771 debug_check_temp_file
[1] = NULL
;
7776 /* If this file's name does not contain a recognized suffix,
7777 record it as explicit linker input. */
7780 explicit_link_files
[i
] = 1;
7782 /* Clear the delete-on-failure queue, deleting the files in it
7783 if this compilation failed. */
7785 if (this_file_error
)
7787 delete_failure_queue ();
7790 /* If this compilation succeeded, don't delete those files later. */
7791 clear_failure_queue ();
7794 /* Reset the input file name to the first compile/object file name, for use
7795 with %b in LINK_SPEC. We use the first input file that we can find
7796 a compiler to compile it instead of using infiles.language since for
7797 languages other than C we use aliases that we then lookup later. */
7802 for (i
= 0; i
< n_infiles
; i
++)
7803 if (infiles
[i
].incompiler
7804 || (infiles
[i
].language
&& infiles
[i
].language
[0] != '*'))
7806 set_input (infiles
[i
].name
);
7813 /* Make sure INPUT_FILE_NUMBER points to first available open
7815 input_file_number
= n_infiles
;
7816 if (lang_specific_pre_link ())
7821 /* If we have to run the linker, do it now. */
7824 driver::maybe_run_linker (const char *argv0
) const
7827 int linker_was_run
= 0;
7828 int num_linker_inputs
;
7830 /* Determine if there are any linker input files. */
7831 num_linker_inputs
= 0;
7832 for (i
= 0; (int) i
< n_infiles
; i
++)
7833 if (explicit_link_files
[i
] || outfiles
[i
] != NULL
)
7834 num_linker_inputs
++;
7836 /* Run ld to link all the compiler output files. */
7838 if (num_linker_inputs
> 0 && !seen_error () && print_subprocess_help
< 2)
7840 int tmp
= execution_count
;
7844 #if HAVE_LTO_PLUGIN > 0
7845 #if HAVE_LTO_PLUGIN == 2
7846 const char *fno_use_linker_plugin
= "fno-use-linker-plugin";
7848 const char *fuse_linker_plugin
= "fuse-linker-plugin";
7852 /* We'll use ld if we can't find collect2. */
7853 if (! strcmp (linker_name_spec
, "collect2"))
7855 char *s
= find_a_file (&exec_prefixes
, "collect2", X_OK
, false);
7857 linker_name_spec
= "ld";
7860 #if HAVE_LTO_PLUGIN > 0
7861 #if HAVE_LTO_PLUGIN == 2
7862 if (!switch_matches (fno_use_linker_plugin
,
7863 fno_use_linker_plugin
7864 + strlen (fno_use_linker_plugin
), 0))
7866 if (switch_matches (fuse_linker_plugin
,
7868 + strlen (fuse_linker_plugin
), 0))
7871 char *temp_spec
= find_a_file (&exec_prefixes
,
7872 LTOPLUGINSONAME
, R_OK
,
7875 fatal_error (input_location
,
7876 "-fuse-linker-plugin, but %s not found",
7878 linker_plugin_file_spec
= convert_white_space (temp_spec
);
7881 lto_gcc_spec
= argv0
;
7884 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
7886 putenv_from_prefixes (&exec_prefixes
, "COMPILER_PATH", false);
7887 putenv_from_prefixes (&startfile_prefixes
, LIBRARY_PATH_ENV
, true);
7889 if (print_subprocess_help
== 1)
7891 printf (_("\nLinker options\n==============\n\n"));
7892 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
7893 " to the linker.\n\n"));
7896 int value
= do_spec (link_command_spec
);
7899 linker_was_run
= (tmp
!= execution_count
);
7902 /* If options said don't run linker,
7903 complain about input files to be given to the linker. */
7905 if (! linker_was_run
&& !seen_error ())
7906 for (i
= 0; (int) i
< n_infiles
; i
++)
7907 if (explicit_link_files
[i
]
7908 && !(infiles
[i
].language
&& infiles
[i
].language
[0] == '*'))
7909 warning (0, "%s: linker input file unused because linking not done",
7913 /* The end of "main". */
7916 driver::final_actions () const
7918 /* Delete some or all of the temporary files we made. */
7921 delete_failure_queue ();
7922 delete_temp_files ();
7924 if (print_help_list
)
7926 printf (("\nFor bug reporting instructions, please see:\n"));
7927 printf ("%s\n", bug_report_url
);
7931 /* Determine what the exit code of the driver should be. */
7934 driver::get_exit_code () const
7936 return (signal_count
!= 0 ? 2
7937 : seen_error () ? (pass_exit_codes
? greatest_status
: 1)
7941 /* Find the proper compilation spec for the file name NAME,
7942 whose length is LENGTH. LANGUAGE is the specified language,
7943 or 0 if this file is to be passed to the linker. */
7945 static struct compiler
*
7946 lookup_compiler (const char *name
, size_t length
, const char *language
)
7948 struct compiler
*cp
;
7950 /* If this was specified by the user to be a linker input, indicate that. */
7951 if (language
!= 0 && language
[0] == '*')
7954 /* Otherwise, look for the language, if one is spec'd. */
7957 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7958 if (cp
->suffix
[0] == '@' && !strcmp (cp
->suffix
+ 1, language
))
7961 error ("language %s not recognized", language
);
7965 /* Look for a suffix. */
7966 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7968 if (/* The suffix `-' matches only the file name `-'. */
7969 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
7970 || (strlen (cp
->suffix
) < length
7971 /* See if the suffix matches the end of NAME. */
7972 && !strcmp (cp
->suffix
,
7973 name
+ length
- strlen (cp
->suffix
))
7978 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
7979 /* Look again, but case-insensitively this time. */
7981 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7983 if (/* The suffix `-' matches only the file name `-'. */
7984 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
7985 || (strlen (cp
->suffix
) < length
7986 /* See if the suffix matches the end of NAME. */
7987 && ((!strcmp (cp
->suffix
,
7988 name
+ length
- strlen (cp
->suffix
))
7989 || !strpbrk (cp
->suffix
, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
7990 && !strcasecmp (cp
->suffix
,
7991 name
+ length
- strlen (cp
->suffix
)))
7997 if (cp
>= compilers
)
7999 if (cp
->spec
[0] != '@')
8000 /* A non-alias entry: return it. */
8003 /* An alias entry maps a suffix to a language.
8004 Search for the language; pass 0 for NAME and LENGTH
8005 to avoid infinite recursion if language not found. */
8006 return lookup_compiler (NULL
, 0, cp
->spec
+ 1);
8012 save_string (const char *s
, int len
)
8014 char *result
= XNEWVEC (char, len
+ 1);
8016 memcpy (result
, s
, len
);
8022 pfatal_with_name (const char *name
)
8024 perror_with_name (name
);
8025 delete_temp_files ();
8030 perror_with_name (const char *name
)
8032 error ("%s: %m", name
);
8036 validate_switches_from_spec (const char *spec
, bool user
)
8038 const char *p
= spec
;
8041 if (c
== '%' && (*p
== '{' || *p
== '<' || (*p
== 'W' && *++p
== '{')))
8042 /* We have a switch spec. */
8043 p
= validate_switches (p
+ 1, user
);
8047 validate_all_switches (void)
8049 struct compiler
*comp
;
8050 struct spec_list
*spec
;
8052 for (comp
= compilers
; comp
->spec
; comp
++)
8053 validate_switches_from_spec (comp
->spec
, false);
8055 /* Look through the linked list of specs read from the specs file. */
8056 for (spec
= specs
; spec
; spec
= spec
->next
)
8057 validate_switches_from_spec (*spec
->ptr_spec
, spec
->user_p
);
8059 validate_switches_from_spec (link_command_spec
, false);
8062 /* Look at the switch-name that comes after START
8063 and mark as valid all supplied switches that match it. */
8066 validate_switches (const char *start
, bool user_spec
)
8068 const char *p
= start
;
8072 bool suffix
= false;
8073 bool starred
= false;
8075 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
8084 if (*p
== '.' || *p
== ',')
8088 while (ISIDNUM (*p
) || *p
== '-' || *p
== '+' || *p
== '='
8089 || *p
== ',' || *p
== '.' || *p
== '@')
8094 starred
= true, p
++;
8100 /* Mark all matching switches as valid. */
8101 for (i
= 0; i
< n_switches
; i
++)
8102 if (!strncmp (switches
[i
].part1
, atom
, len
)
8103 && (starred
|| switches
[i
].part1
[len
] == '\0')
8104 && (switches
[i
].known
|| user_spec
))
8105 switches
[i
].validated
= true;
8109 if (*p
&& (p
[-1] == '|' || p
[-1] == '&'))
8112 if (*p
&& p
[-1] == ':')
8114 while (*p
&& *p
!= ';' && *p
!= '}')
8119 if (*p
== '{' || *p
== '<')
8120 p
= validate_switches (p
+1, user_spec
);
8121 else if (p
[0] == 'W' && p
[1] == '{')
8122 p
= validate_switches (p
+2, user_spec
);
8129 if (*p
&& p
[-1] == ';')
8143 static struct mdswitchstr
*mdswitches
;
8144 static int n_mdswitches
;
8146 /* Check whether a particular argument was used. The first time we
8147 canonicalize the switches to keep only the ones we care about. */
8150 used_arg (const char *p
, int len
)
8155 const char *replace
;
8160 static struct mswitchstr
*mswitches
;
8161 static int n_mswitches
;
8166 struct mswitchstr
*matches
;
8170 /* Break multilib_matches into the component strings of string
8171 and replacement string. */
8172 for (q
= multilib_matches
; *q
!= '\0'; q
++)
8177 = (struct mswitchstr
*) alloca ((sizeof (struct mswitchstr
)) * cnt
);
8179 q
= multilib_matches
;
8188 fatal_error (input_location
, "multilib spec %qs is invalid",
8193 matches
[i
].len
= q
- matches
[i
].str
;
8195 matches
[i
].replace
= ++q
;
8196 while (*q
!= ';' && *q
!= '\0')
8199 goto invalid_matches
;
8202 matches
[i
].rep_len
= q
- matches
[i
].replace
;
8208 /* Now build a list of the replacement string for switches that we care
8209 about. Make sure we allocate at least one entry. This prevents
8210 xmalloc from calling fatal, and prevents us from re-executing this
8213 = XNEWVEC (struct mswitchstr
, n_mdswitches
+ (n_switches
? n_switches
: 1));
8214 for (i
= 0; i
< n_switches
; i
++)
8215 if ((switches
[i
].live_cond
& SWITCH_IGNORE
) == 0)
8217 int xlen
= strlen (switches
[i
].part1
);
8218 for (j
= 0; j
< cnt
; j
++)
8219 if (xlen
== matches
[j
].len
8220 && ! strncmp (switches
[i
].part1
, matches
[j
].str
, xlen
))
8222 mswitches
[n_mswitches
].str
= matches
[j
].replace
;
8223 mswitches
[n_mswitches
].len
= matches
[j
].rep_len
;
8224 mswitches
[n_mswitches
].replace
= (char *) 0;
8225 mswitches
[n_mswitches
].rep_len
= 0;
8231 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
8232 on the command line nor any options mutually incompatible with
8234 for (i
= 0; i
< n_mdswitches
; i
++)
8238 for (q
= multilib_options
; *q
!= '\0'; *q
&& q
++)
8244 while (strncmp (q
, mdswitches
[i
].str
, mdswitches
[i
].len
) != 0
8245 || strchr (" /", q
[mdswitches
[i
].len
]) == NULL
)
8247 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
8254 if (*q
!= ' ' && *q
!= '\0')
8256 while (*r
!= ' ' && *r
!= '\0')
8259 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
8262 if (used_arg (r
, q
- r
))
8267 mswitches
[n_mswitches
].str
= mdswitches
[i
].str
;
8268 mswitches
[n_mswitches
].len
= mdswitches
[i
].len
;
8269 mswitches
[n_mswitches
].replace
= (char *) 0;
8270 mswitches
[n_mswitches
].rep_len
= 0;
8283 for (i
= 0; i
< n_mswitches
; i
++)
8284 if (len
== mswitches
[i
].len
&& ! strncmp (p
, mswitches
[i
].str
, len
))
8291 default_arg (const char *p
, int len
)
8295 for (i
= 0; i
< n_mdswitches
; i
++)
8296 if (len
== mdswitches
[i
].len
&& ! strncmp (p
, mdswitches
[i
].str
, len
))
8302 /* Work out the subdirectory to use based on the options. The format of
8303 multilib_select is a list of elements. Each element is a subdirectory
8304 name followed by a list of options followed by a semicolon. The format
8305 of multilib_exclusions is the same, but without the preceding
8306 directory. First gcc will check the exclusions, if none of the options
8307 beginning with an exclamation point are present, and all of the other
8308 options are present, then we will ignore this completely. Passing
8309 that, gcc will consider each multilib_select in turn using the same
8310 rules for matching the options. If a match is found, that subdirectory
8312 A subdirectory name is optionally followed by a colon and the corresponding
8316 set_multilib_dir (void)
8319 unsigned int this_path_len
;
8320 const char *this_path
, *this_arg
;
8321 const char *start
, *end
;
8323 int ok
, ndfltok
, first
;
8326 start
= multilib_defaults
;
8327 while (*start
== ' ' || *start
== '\t')
8329 while (*start
!= '\0')
8332 while (*start
!= ' ' && *start
!= '\t' && *start
!= '\0')
8334 while (*start
== ' ' || *start
== '\t')
8342 mdswitches
= XNEWVEC (struct mdswitchstr
, n_mdswitches
);
8343 for (start
= multilib_defaults
; *start
!= '\0'; start
= end
+ 1)
8345 while (*start
== ' ' || *start
== '\t')
8351 for (end
= start
+ 1;
8352 *end
!= ' ' && *end
!= '\t' && *end
!= '\0'; end
++)
8355 obstack_grow (&multilib_obstack
, start
, end
- start
);
8356 obstack_1grow (&multilib_obstack
, 0);
8357 mdswitches
[i
].str
= XOBFINISH (&multilib_obstack
, const char *);
8358 mdswitches
[i
++].len
= end
- start
;
8365 p
= multilib_exclusions
;
8368 /* Ignore newlines. */
8375 /* Check the arguments. */
8382 fatal_error (input_location
, "multilib exclusions %qs is invalid",
8383 multilib_exclusions
);
8393 while (*p
!= ' ' && *p
!= ';')
8396 goto invalid_exclusions
;
8400 if (*this_arg
!= '!')
8408 ok
= used_arg (this_arg
, p
- this_arg
);
8423 p
= multilib_select
;
8425 /* Append multilib reuse rules if any. With those rules, we can reuse
8426 one multilib for certain different options sets. */
8427 if (strlen (multilib_reuse
) > 0)
8428 p
= concat (p
, multilib_reuse
, NULL
);
8432 /* Ignore newlines. */
8439 /* Get the initial path. */
8446 fatal_error (input_location
, "multilib select %qs %qs is invalid",
8447 multilib_select
, multilib_reuse
);
8451 this_path_len
= p
- this_path
;
8453 /* Check the arguments. */
8460 goto invalid_select
;
8469 while (*p
!= ' ' && *p
!= ';')
8472 goto invalid_select
;
8476 if (*this_arg
!= '!')
8484 /* If this is a default argument, we can just ignore it.
8485 This is true even if this_arg begins with '!'. Beginning
8486 with '!' does not mean that this argument is necessarily
8487 inappropriate for this library: it merely means that
8488 there is a more specific library which uses this
8489 argument. If this argument is a default, we need not
8490 consider that more specific library. */
8491 ok
= used_arg (this_arg
, p
- this_arg
);
8498 if (default_arg (this_arg
, p
- this_arg
))
8507 if (this_path_len
!= 1
8508 || this_path
[0] != '.')
8510 char *new_multilib_dir
= XNEWVEC (char, this_path_len
+ 1);
8513 strncpy (new_multilib_dir
, this_path
, this_path_len
);
8514 new_multilib_dir
[this_path_len
] = '\0';
8515 q
= strchr (new_multilib_dir
, ':');
8518 multilib_dir
= new_multilib_dir
;
8525 const char *q
= this_path
, *end
= this_path
+ this_path_len
;
8527 while (q
< end
&& *q
!= ':')
8531 const char *q2
= q
+ 1, *ml_end
= end
;
8532 char *new_multilib_os_dir
;
8534 while (q2
< end
&& *q2
!= ':')
8538 if (ml_end
- q
== 1)
8539 multilib_os_dir
= xstrdup (".");
8542 new_multilib_os_dir
= XNEWVEC (char, ml_end
- q
);
8543 memcpy (new_multilib_os_dir
, q
+ 1, ml_end
- q
- 1);
8544 new_multilib_os_dir
[ml_end
- q
- 1] = '\0';
8545 multilib_os_dir
= new_multilib_os_dir
;
8548 if (q2
< end
&& *q2
== ':')
8550 char *new_multiarch_dir
= XNEWVEC (char, end
- q2
);
8551 memcpy (new_multiarch_dir
, q2
+ 1, end
- q2
- 1);
8552 new_multiarch_dir
[end
- q2
- 1] = '\0';
8553 multiarch_dir
= new_multiarch_dir
;
8562 if (multilib_dir
== NULL
&& multilib_os_dir
!= NULL
8563 && strcmp (multilib_os_dir
, ".") == 0)
8565 free (CONST_CAST (char *, multilib_os_dir
));
8566 multilib_os_dir
= NULL
;
8568 else if (multilib_dir
!= NULL
&& multilib_os_dir
== NULL
)
8569 multilib_os_dir
= multilib_dir
;
8572 /* Print out the multiple library subdirectory selection
8573 information. This prints out a series of lines. Each line looks
8574 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
8575 required. Only the desired options are printed out, the negative
8576 matches. The options are print without a leading dash. There are
8577 no spaces to make it easy to use the information in the shell.
8578 Each subdirectory is printed only once. This assumes the ordering
8579 generated by the genmultilib script. Also, we leave out ones that match
8583 print_multilib_info (void)
8585 const char *p
= multilib_select
;
8586 const char *last_path
= 0, *this_path
;
8588 unsigned int last_path_len
= 0;
8593 /* Ignore newlines. */
8600 /* Get the initial path. */
8607 fatal_error (input_location
,
8608 "multilib select %qs is invalid", multilib_select
);
8614 /* When --disable-multilib was used but target defines
8615 MULTILIB_OSDIRNAMES, entries starting with .: (and not starting
8616 with .:: for multiarch configurations) are there just to find
8617 multilib_os_dir, so skip them from output. */
8618 if (this_path
[0] == '.' && this_path
[1] == ':' && this_path
[2] != ':')
8621 /* Check for matches with the multilib_exclusions. We don't bother
8622 with the '!' in either list. If any of the exclusion rules match
8623 all of its options with the select rule, we skip it. */
8625 const char *e
= multilib_exclusions
;
8626 const char *this_arg
;
8631 /* Ignore newlines. */
8638 /* Check the arguments. */
8647 fatal_error (input_location
,
8648 "multilib exclusion %qs is invalid",
8649 multilib_exclusions
);
8660 while (*e
!= ' ' && *e
!= ';')
8663 goto invalid_exclusion
;
8671 int len
= e
- this_arg
;
8674 goto invalid_select
;
8678 while (*q
!= ' ' && *q
!= ';')
8681 goto invalid_select
;
8685 if (! strncmp (arg
, this_arg
,
8686 (len
< q
- arg
) ? q
- arg
: len
)
8687 || default_arg (this_arg
, e
- this_arg
))
8717 /* If this is a duplicate, skip it. */
8718 skip
= (last_path
!= 0
8719 && (unsigned int) (p
- this_path
) == last_path_len
8720 && ! filename_ncmp (last_path
, this_path
, last_path_len
));
8722 last_path
= this_path
;
8723 last_path_len
= p
- this_path
;
8726 /* If this directory requires any default arguments, we can skip
8727 it. We will already have printed a directory identical to
8728 this one which does not require that default argument. */
8739 goto invalid_select
;
8746 while (*q
!= ' ' && *q
!= ';')
8749 goto invalid_select
;
8754 && default_arg (arg
, q
- arg
))
8769 for (p1
= last_path
; p1
< p
&& *p1
!= ':'; p1
++)
8780 goto invalid_select
;
8788 use_arg
= *p
!= '!';
8793 while (*p
!= ' ' && *p
!= ';')
8796 goto invalid_select
;
8808 /* If there are extra options, print them now. */
8809 if (multilib_extra
&& *multilib_extra
)
8811 int print_at
= TRUE
;
8814 for (q
= multilib_extra
; *q
!= '\0'; q
++)
8835 /* getenv built-in spec function.
8837 Returns the value of the environment variable given by its first
8838 argument, concatenated with the second argument. If the
8839 environment variable is not defined, a fatal error is issued. */
8842 getenv_spec_function (int argc
, const char **argv
)
8852 value
= getenv (argv
[0]);
8854 fatal_error (input_location
,
8855 "environment variable %qs not defined", argv
[0]);
8857 /* We have to escape every character of the environment variable so
8858 they are not interpreted as active spec characters. A
8859 particularly painful case is when we are reading a variable
8860 holding a windows path complete with \ separators. */
8861 len
= strlen (value
) * 2 + strlen (argv
[1]) + 1;
8862 result
= XNEWVAR (char, len
);
8863 for (ptr
= result
; *value
; ptr
+= 2)
8869 strcpy (ptr
, argv
[1]);
8874 /* if-exists built-in spec function.
8876 Checks to see if the file specified by the absolute pathname in
8877 ARGS exists. Returns that pathname if found.
8879 The usual use for this function is to check for a library file
8880 (whose name has been expanded with %s). */
8883 if_exists_spec_function (int argc
, const char **argv
)
8885 /* Must have only one argument. */
8886 if (argc
== 1 && IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
8892 /* if-exists-else built-in spec function.
8894 This is like if-exists, but takes an additional argument which
8895 is returned if the first argument does not exist. */
8898 if_exists_else_spec_function (int argc
, const char **argv
)
8900 /* Must have exactly two arguments. */
8904 if (IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
8910 /* sanitize built-in spec function.
8912 This returns non-NULL, if sanitizing address, thread or
8913 any of the undefined behavior sanitizers. */
8916 sanitize_spec_function (int argc
, const char **argv
)
8921 if (strcmp (argv
[0], "address") == 0)
8922 return (flag_sanitize
& SANITIZE_USER_ADDRESS
) ? "" : NULL
;
8923 if (strcmp (argv
[0], "kernel-address") == 0)
8924 return (flag_sanitize
& SANITIZE_KERNEL_ADDRESS
) ? "" : NULL
;
8925 if (strcmp (argv
[0], "thread") == 0)
8926 return (flag_sanitize
& SANITIZE_THREAD
) ? "" : NULL
;
8927 if (strcmp (argv
[0], "undefined") == 0)
8928 return ((flag_sanitize
& (SANITIZE_UNDEFINED
| SANITIZE_NONDEFAULT
))
8929 && !flag_sanitize_undefined_trap_on_error
) ? "" : NULL
;
8930 if (strcmp (argv
[0], "leak") == 0)
8931 return ((flag_sanitize
8932 & (SANITIZE_ADDRESS
| SANITIZE_LEAK
| SANITIZE_THREAD
))
8933 == SANITIZE_LEAK
) ? "" : NULL
;
8937 /* replace-outfile built-in spec function.
8939 This looks for the first argument in the outfiles array's name and
8940 replaces it with the second argument. */
8943 replace_outfile_spec_function (int argc
, const char **argv
)
8946 /* Must have exactly two arguments. */
8950 for (i
= 0; i
< n_infiles
; i
++)
8952 if (outfiles
[i
] && !filename_cmp (outfiles
[i
], argv
[0]))
8953 outfiles
[i
] = xstrdup (argv
[1]);
8958 /* remove-outfile built-in spec function.
8960 * This looks for the first argument in the outfiles array's name and
8964 remove_outfile_spec_function (int argc
, const char **argv
)
8967 /* Must have exactly one argument. */
8971 for (i
= 0; i
< n_infiles
; i
++)
8973 if (outfiles
[i
] && !filename_cmp (outfiles
[i
], argv
[0]))
8979 /* Given two version numbers, compares the two numbers.
8980 A version number must match the regular expression
8981 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
8984 compare_version_strings (const char *v1
, const char *v2
)
8989 if (regcomp (&r
, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
8990 REG_EXTENDED
| REG_NOSUB
) != 0)
8992 rresult
= regexec (&r
, v1
, 0, NULL
, 0);
8993 if (rresult
== REG_NOMATCH
)
8994 fatal_error (input_location
, "invalid version number %qs", v1
);
8995 else if (rresult
!= 0)
8997 rresult
= regexec (&r
, v2
, 0, NULL
, 0);
8998 if (rresult
== REG_NOMATCH
)
8999 fatal_error (input_location
, "invalid version number %qs", v2
);
9000 else if (rresult
!= 0)
9003 return strverscmp (v1
, v2
);
9007 /* version_compare built-in spec function.
9009 This takes an argument of the following form:
9011 <comparison-op> <arg1> [<arg2>] <switch> <result>
9013 and produces "result" if the comparison evaluates to true,
9014 and nothing if it doesn't.
9016 The supported <comparison-op> values are:
9018 >= true if switch is a later (or same) version than arg1
9020 < true if switch is an earlier version than arg1
9022 >< true if switch is arg1 or later, and earlier than arg2
9023 <> true if switch is earlier than arg1 or is arg2 or later
9025 If the switch is not present, the condition is false unless
9026 the first character of the <comparison-op> is '!'.
9029 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
9030 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
9033 version_compare_spec_function (int argc
, const char **argv
)
9037 const char *switch_value
= NULL
;
9042 fatal_error (input_location
, "too few arguments to %%:version-compare");
9043 if (argv
[0][0] == '\0')
9045 if ((argv
[0][1] == '<' || argv
[0][1] == '>') && argv
[0][0] != '!')
9047 if (argc
!= nargs
+ 3)
9048 fatal_error (input_location
, "too many arguments to %%:version-compare");
9050 switch_len
= strlen (argv
[nargs
+ 1]);
9051 for (i
= 0; i
< n_switches
; i
++)
9052 if (!strncmp (switches
[i
].part1
, argv
[nargs
+ 1], switch_len
)
9053 && check_live_switch (i
, switch_len
))
9054 switch_value
= switches
[i
].part1
+ switch_len
;
9056 if (switch_value
== NULL
)
9060 comp1
= compare_version_strings (switch_value
, argv
[1]);
9062 comp2
= compare_version_strings (switch_value
, argv
[2]);
9064 comp2
= -1; /* This value unused. */
9067 switch (argv
[0][0] << 8 | argv
[0][1])
9069 case '>' << 8 | '=':
9070 result
= comp1
>= 0;
9072 case '!' << 8 | '<':
9073 result
= comp1
>= 0 || switch_value
== NULL
;
9078 case '!' << 8 | '>':
9079 result
= comp1
< 0 || switch_value
== NULL
;
9081 case '>' << 8 | '<':
9082 result
= comp1
>= 0 && comp2
< 0;
9084 case '<' << 8 | '>':
9085 result
= comp1
< 0 || comp2
>= 0;
9089 fatal_error (input_location
,
9090 "unknown operator %qs in %%:version-compare", argv
[0]);
9095 return argv
[nargs
+ 2];
9098 /* %:include builtin spec function. This differs from %include in that it
9099 can be nested inside a spec, and thus be conditionalized. It takes
9100 one argument, the filename, and looks for it in the startfile path.
9101 The result is always NULL, i.e. an empty expansion. */
9104 include_spec_function (int argc
, const char **argv
)
9111 file
= find_a_file (&startfile_prefixes
, argv
[0], R_OK
, true);
9112 read_specs (file
? file
: argv
[0], false, false);
9117 /* %:find-file spec function. This function replaces its argument by
9118 the file found through find_file, that is the -print-file-name gcc
9121 find_file_spec_function (int argc
, const char **argv
)
9128 file
= find_file (argv
[0]);
9133 /* %:find-plugindir spec function. This function replaces its argument
9134 by the -iplugindir=<dir> option. `dir' is found through find_file, that
9135 is the -print-file-name gcc program option. */
9137 find_plugindir_spec_function (int argc
, const char **argv ATTRIBUTE_UNUSED
)
9144 option
= concat ("-iplugindir=", find_file ("plugin"), NULL
);
9149 /* %:print-asm-header spec function. Print a banner to say that the
9150 following output is from the assembler. */
9153 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED
,
9154 const char **argv ATTRIBUTE_UNUSED
)
9156 printf (_("Assembler options\n=================\n\n"));
9157 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
9162 /* Get a random number for -frandom-seed */
9164 static unsigned HOST_WIDE_INT
9165 get_random_number (void)
9167 unsigned HOST_WIDE_INT ret
= 0;
9170 fd
= open ("/dev/urandom", O_RDONLY
);
9173 read (fd
, &ret
, sizeof (HOST_WIDE_INT
));
9179 /* Get some more or less random data. */
9180 #ifdef HAVE_GETTIMEOFDAY
9184 gettimeofday (&tv
, NULL
);
9185 ret
= tv
.tv_sec
* 1000 + tv
.tv_usec
/ 1000;
9189 time_t now
= time (NULL
);
9191 if (now
!= (time_t)-1)
9192 ret
= (unsigned) now
;
9196 return ret
^ getpid ();
9199 /* %:compare-debug-dump-opt spec function. Save the last argument,
9200 expected to be the last -fdump-final-insns option, or generate a
9204 compare_debug_dump_opt_spec_function (int arg
,
9205 const char **argv ATTRIBUTE_UNUSED
)
9210 static char random_seed
[HOST_BITS_PER_WIDE_INT
/ 4 + 3];
9213 fatal_error (input_location
,
9214 "too many arguments to %%:compare-debug-dump-opt");
9216 do_spec_2 ("%{fdump-final-insns=*:%*}");
9217 do_spec_1 (" ", 0, NULL
);
9219 if (argbuf
.length () > 0
9220 && strcmp (argv
[argbuf
.length () - 1], "."))
9225 name
= xstrdup (argv
[argbuf
.length () - 1]);
9230 const char *ext
= NULL
;
9232 if (argbuf
.length () > 0)
9234 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
9237 else if (!compare_debug
)
9240 do_spec_2 ("%g.gkd");
9242 do_spec_1 (" ", 0, NULL
);
9244 gcc_assert (argbuf
.length () > 0);
9246 name
= concat (argbuf
.last (), ext
, NULL
);
9248 ret
= concat ("-fdump-final-insns=", name
, NULL
);
9251 which
= compare_debug
< 0;
9252 debug_check_temp_file
[which
] = name
;
9256 unsigned HOST_WIDE_INT value
= get_random_number ();
9258 sprintf (random_seed
, HOST_WIDE_INT_PRINT_HEX
, value
);
9264 ret
= concat ("%{!frandom-seed=*:-frandom-seed=", random_seed
, "} ",
9275 static const char *debug_auxbase_opt
;
9277 /* %:compare-debug-self-opt spec function. Expands to the options
9278 that are to be passed in the second compilation of
9282 compare_debug_self_opt_spec_function (int arg
,
9283 const char **argv ATTRIBUTE_UNUSED
)
9286 fatal_error (input_location
,
9287 "too many arguments to %%:compare-debug-self-opt");
9289 if (compare_debug
>= 0)
9292 do_spec_2 ("%{c|S:%{o*:%*}}");
9293 do_spec_1 (" ", 0, NULL
);
9295 if (argbuf
.length () > 0)
9296 debug_auxbase_opt
= concat ("-auxbase-strip ",
9300 debug_auxbase_opt
= NULL
;
9303 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
9304 %<fdump-final-insns=* -w -S -o %j \
9305 %{!fcompare-debug-second:-fcompare-debug-second} \
9306 ", compare_debug_opt
, NULL
);
9309 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
9310 options that are to be passed in the second compilation of
9311 compare-debug. It expects, as an argument, the basename of the
9312 current input file name, with the .gk suffix appended to it. */
9315 compare_debug_auxbase_opt_spec_function (int arg
,
9322 fatal_error (input_location
,
9323 "too few arguments to %%:compare-debug-auxbase-opt");
9326 fatal_error (input_location
,
9327 "too many arguments to %%:compare-debug-auxbase-opt");
9329 if (compare_debug
>= 0)
9332 len
= strlen (argv
[0]);
9333 if (len
< 3 || strcmp (argv
[0] + len
- 3, ".gk") != 0)
9334 fatal_error (input_location
, "argument to %%:compare-debug-auxbase-opt "
9335 "does not end in .gk");
9337 if (debug_auxbase_opt
)
9338 return debug_auxbase_opt
;
9340 #define OPT "-auxbase "
9343 name
= (char*) xmalloc (sizeof (OPT
) + len
);
9344 memcpy (name
, OPT
, sizeof (OPT
) - 1);
9345 memcpy (name
+ sizeof (OPT
) - 1, argv
[0], len
);
9346 name
[sizeof (OPT
) - 1 + len
] = '\0';
9353 /* %:pass-through-libs spec function. Finds all -l options and input
9354 file names in the lib spec passed to it, and makes a list of them
9355 prepended with the plugin option to cause them to be passed through
9356 to the final link after all the new object files have been added. */
9359 pass_through_libs_spec_func (int argc
, const char **argv
)
9361 char *prepended
= xstrdup (" ");
9363 /* Shlemiel the painter's algorithm. Innately horrible, but at least
9364 we know that there will never be more than a handful of strings to
9365 concat, and it's only once per run, so it's not worth optimising. */
9366 for (n
= 0; n
< argc
; n
++)
9368 char *old
= prepended
;
9369 /* Anything that isn't an option is a full path to an output
9370 file; pass it through if it ends in '.a'. Among options,
9372 if (argv
[n
][0] == '-' && argv
[n
][1] == 'l')
9374 const char *lopt
= argv
[n
] + 2;
9375 /* Handle both joined and non-joined -l options. If for any
9376 reason there's a trailing -l with no joined or following
9377 arg just discard it. */
9378 if (!*lopt
&& ++n
>= argc
)
9382 prepended
= concat (prepended
, "-plugin-opt=-pass-through=-l",
9385 else if (!strcmp (".a", argv
[n
] + strlen (argv
[n
]) - 2))
9387 prepended
= concat (prepended
, "-plugin-opt=-pass-through=",
9388 argv
[n
], " ", NULL
);
9390 if (prepended
!= old
)
9396 /* %:replace-extension spec function. Replaces the extension of the
9397 first argument with the second argument. */
9400 replace_extension_spec_func (int argc
, const char **argv
)
9408 fatal_error (input_location
, "too few arguments to %%:replace-extension");
9410 name
= xstrdup (argv
[0]);
9412 for (i
= strlen (name
) - 1; i
>= 0; i
--)
9413 if (IS_DIR_SEPARATOR (name
[i
]))
9416 p
= strrchr (name
+ i
+ 1, '.');
9420 result
= concat (name
, argv
[1], NULL
);
9426 /* Insert backslash before spaces in ORIG (usually a file path), to
9427 avoid being broken by spec parser.
9429 This function is needed as do_spec_1 treats white space (' ' and '\t')
9430 as the end of an argument. But in case of -plugin /usr/gcc install/xxx.so,
9431 the file name should be treated as a single argument rather than being
9432 broken into multiple. Solution is to insert '\\' before the space in a
9435 This function converts and only converts all occurrence of ' '
9436 to '\\' + ' ' and '\t' to '\\' + '\t'. For example:
9440 "a\\ b" -> "a\\\\ b"
9442 orig: input null-terminating string that was allocated by xalloc. The
9443 memory it points to might be freed in this function. Behavior undefined
9444 if ORIG wasn't xalloced or was freed already at entry.
9446 Return: ORIG if no conversion needed. Otherwise a newly allocated string
9447 that was converted from ORIG. */
9450 convert_white_space (char *orig
)
9452 int len
, number_of_space
= 0;
9454 for (len
= 0; orig
[len
]; len
++)
9455 if (orig
[len
] == ' ' || orig
[len
] == '\t') number_of_space
++;
9457 if (number_of_space
)
9459 char *new_spec
= (char *) xmalloc (len
+ number_of_space
+ 1);
9461 for (j
= 0, k
= 0; j
<= len
; j
++, k
++)
9463 if (orig
[j
] == ' ' || orig
[j
] == '\t')
9464 new_spec
[k
++] = '\\';
9465 new_spec
[k
] = orig
[j
];
9475 Targets can provide configure-time default options in
9476 OPTION_DEFAULT_SPECS. The jit needs to access these, but
9477 they are expressed in the spec language.
9479 Run just enough of the driver to be able to expand these
9480 specs, and then call the callback CB on each
9481 such option. The options strings are *without* a leading
9482 '-' character e.g. ("march=x86-64"). Finally, clean up. */
9485 driver_get_configure_time_options (void (*cb
) (const char *option
,
9491 obstack_init (&obstack
);
9492 gcc_obstack_init (&opts_obstack
);
9495 for (i
= 0; i
< ARRAY_SIZE (option_default_specs
); i
++)
9496 do_option_spec (option_default_specs
[i
].name
,
9497 option_default_specs
[i
].spec
);
9499 for (i
= 0; (int) i
< n_switches
; i
++)
9501 gcc_assert (switches
[i
].part1
);
9502 (*cb
) (switches
[i
].part1
, user_data
);
9505 obstack_free (&opts_obstack
, NULL
);
9506 obstack_free (&obstack
, NULL
);