1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987-2014 Free Software Foundation, Inc.
4 This file is part of GCC.
6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 3, or (at your option) any later
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING3. If not see
18 <http://www.gnu.org/licenses/>. */
20 /* This program is the user interface to the C compiler and possibly to
21 other compilers. It is used because compilation is a complicated procedure
22 which involves running several programs and passing temporary files between
23 them, forwarding the users switches to those programs selectively,
24 and deleting the temporary files at the end.
26 CC recognizes how to compile each input file by suffixes in the file names.
27 Once it knows which kind of compilation to perform, the procedure for
28 compilation is specified by a string called a "spec". */
32 #include "coretypes.h"
33 #include "multilib.h" /* before tm.h */
40 #include "diagnostic.h"
45 #include "filenames.h"
47 /* By default there is no special suffix for target executables. */
48 /* FIXME: when autoconf is fixed, remove the host check - dj */
49 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
50 #define HAVE_TARGET_EXECUTABLE_SUFFIX
53 /* By default there is no special suffix for host executables. */
54 #ifdef HOST_EXECUTABLE_SUFFIX
55 #define HAVE_HOST_EXECUTABLE_SUFFIX
57 #define HOST_EXECUTABLE_SUFFIX ""
60 /* By default, the suffix for target object files is ".o". */
61 #ifdef TARGET_OBJECT_SUFFIX
62 #define HAVE_TARGET_OBJECT_SUFFIX
64 #define TARGET_OBJECT_SUFFIX ".o"
67 static const char dir_separator_str
[] = { DIR_SEPARATOR
, 0 };
69 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
70 #ifndef LIBRARY_PATH_ENV
71 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
74 /* If a stage of compilation returns an exit status >= 1,
75 compilation of that file ceases. */
77 #define MIN_FATAL_STATUS 1
79 /* Flag set by cppspec.c to 1. */
82 /* Flag set to nonzero if an @file argument has been supplied to gcc. */
83 static bool at_file_supplied
;
85 /* Definition of string containing the arguments given to configure. */
86 #include "configargs.h"
88 /* Flag saying to print the command line options understood by gcc and its
91 static int print_help_list
;
93 /* Flag saying to print the version of gcc and its sub-processes. */
95 static int print_version
;
97 /* Flag indicating whether we should ONLY print the command and
98 arguments (like verbose_flag) without executing the command.
99 Displayed arguments are quoted so that the generated command
100 line is suitable for execution. This is intended for use in
101 shell scripts to capture the driver-generated command line. */
102 static int verbose_only_flag
;
104 /* Flag indicating how to print command line options of sub-processes. */
106 static int print_subprocess_help
;
108 /* Linker suffix passed to -fuse-ld=... */
109 static const char *use_ld
;
111 /* Whether we should report subprocess execution times to a file. */
113 FILE *report_times_to_file
= NULL
;
115 /* Nonzero means place this string before uses of /, so that include
116 and library files can be found in an alternate location. */
118 #ifdef TARGET_SYSTEM_ROOT
119 static const char *target_system_root
= TARGET_SYSTEM_ROOT
;
121 static const char *target_system_root
= 0;
124 /* Nonzero means pass the updated target_system_root to the compiler. */
126 static int target_system_root_changed
;
128 /* Nonzero means append this string to target_system_root. */
130 static const char *target_sysroot_suffix
= 0;
132 /* Nonzero means append this string to target_system_root for headers. */
134 static const char *target_sysroot_hdrs_suffix
= 0;
136 /* Nonzero means write "temp" files in source directory
137 and use the source file's name in them, and don't delete them. */
139 static enum save_temps
{
140 SAVE_TEMPS_NONE
, /* no -save-temps */
141 SAVE_TEMPS_CWD
, /* -save-temps in current directory */
142 SAVE_TEMPS_OBJ
/* -save-temps in object directory */
145 /* Output file to use to get the object directory for -save-temps=obj */
146 static char *save_temps_prefix
= 0;
147 static size_t save_temps_length
= 0;
149 /* The compiler version. */
151 static const char *compiler_version
;
153 /* The target version. */
155 static const char *const spec_version
= DEFAULT_TARGET_VERSION
;
157 /* The target machine. */
159 static const char *spec_machine
= DEFAULT_TARGET_MACHINE
;
161 /* Nonzero if cross-compiling.
162 When -b is used, the value comes from the `specs' file. */
164 #ifdef CROSS_DIRECTORY_STRUCTURE
165 static const char *cross_compile
= "1";
167 static const char *cross_compile
= "0";
170 /* Greatest exit code of sub-processes that has been encountered up to
172 static int greatest_status
= 1;
174 /* This is the obstack which we use to allocate many strings. */
176 static struct obstack obstack
;
178 /* This is the obstack to build an environment variable to pass to
179 collect2 that describes all of the relevant switches of what to
180 pass the compiler in building the list of pointers to constructors
183 static struct obstack collect_obstack
;
185 /* Forward declaration for prototypes. */
189 static void init_spec (void);
190 static void store_arg (const char *, int, int);
191 static void insert_wrapper (const char *);
192 static char *load_specs (const char *);
193 static void read_specs (const char *, bool, bool);
194 static void set_spec (const char *, const char *, bool);
195 static struct compiler
*lookup_compiler (const char *, size_t, const char *);
196 static char *build_search_list (const struct path_prefix
*, const char *,
198 static void xputenv (const char *);
199 static void putenv_from_prefixes (const struct path_prefix
*, const char *,
201 static int access_check (const char *, int);
202 static char *find_a_file (const struct path_prefix
*, const char *, int, bool);
203 static void add_prefix (struct path_prefix
*, const char *, const char *,
205 static void add_sysrooted_prefix (struct path_prefix
*, const char *,
206 const char *, int, int, int);
207 static char *skip_whitespace (char *);
208 static void delete_if_ordinary (const char *);
209 static void delete_temp_files (void);
210 static void delete_failure_queue (void);
211 static void clear_failure_queue (void);
212 static int check_live_switch (int, int);
213 static const char *handle_braces (const char *);
214 static inline bool input_suffix_matches (const char *, const char *);
215 static inline bool switch_matches (const char *, const char *, int);
216 static inline void mark_matching_switches (const char *, const char *, int);
217 static inline void process_marked_switches (void);
218 static const char *process_brace_body (const char *, const char *, const char *, int, int);
219 static const struct spec_function
*lookup_spec_function (const char *);
220 static const char *eval_spec_function (const char *, const char *);
221 static const char *handle_spec_function (const char *, bool *);
222 static char *save_string (const char *, int);
223 static void set_collect_gcc_options (void);
224 static int do_spec_1 (const char *, int, const char *);
225 static int do_spec_2 (const char *);
226 static void do_option_spec (const char *, const char *);
227 static void do_self_spec (const char *);
228 static const char *find_file (const char *);
229 static int is_directory (const char *, bool);
230 static const char *validate_switches (const char *, bool);
231 static void validate_all_switches (void);
232 static inline void validate_switches_from_spec (const char *, bool);
233 static void give_switch (int, int);
234 static int used_arg (const char *, int);
235 static int default_arg (const char *, int);
236 static void set_multilib_dir (void);
237 static void print_multilib_info (void);
238 static void perror_with_name (const char *);
239 static void display_help (void);
240 static void add_preprocessor_option (const char *, int);
241 static void add_assembler_option (const char *, int);
242 static void add_linker_option (const char *, int);
243 static void process_command (unsigned int, struct cl_decoded_option
*);
244 static int execute (void);
245 static void alloc_args (void);
246 static void clear_args (void);
247 static void fatal_signal (int);
248 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
249 static void init_gcc_specs (struct obstack
*, const char *, const char *,
252 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
253 static const char *convert_filename (const char *, int, int);
256 static const char *getenv_spec_function (int, const char **);
257 static const char *if_exists_spec_function (int, const char **);
258 static const char *if_exists_else_spec_function (int, const char **);
259 static const char *sanitize_spec_function (int, const char **);
260 static const char *replace_outfile_spec_function (int, const char **);
261 static const char *remove_outfile_spec_function (int, const char **);
262 static const char *version_compare_spec_function (int, const char **);
263 static const char *include_spec_function (int, const char **);
264 static const char *find_file_spec_function (int, const char **);
265 static const char *find_plugindir_spec_function (int, const char **);
266 static const char *print_asm_header_spec_function (int, const char **);
267 static const char *compare_debug_dump_opt_spec_function (int, const char **);
268 static const char *compare_debug_self_opt_spec_function (int, const char **);
269 static const char *compare_debug_auxbase_opt_spec_function (int, const char **);
270 static const char *pass_through_libs_spec_func (int, const char **);
271 static const char *replace_extension_spec_func (int, const char **);
272 static char *convert_white_space (char *);
274 /* The Specs Language
276 Specs are strings containing lines, each of which (if not blank)
277 is made up of a program name, and arguments separated by spaces.
278 The program name must be exact and start from root, since no path
279 is searched and it is unreliable to depend on the current working directory.
280 Redirection of input or output is not supported; the subprograms must
281 accept filenames saying what files to read and write.
283 In addition, the specs can contain %-sequences to substitute variable text
284 or for conditional text. Here is a table of all defined %-sequences.
285 Note that spaces are not generated automatically around the results of
286 expanding these sequences; therefore, you can concatenate them together
287 or with constant text in a single argument.
289 %% substitute one % into the program name or argument.
290 %i substitute the name of the input file being processed.
291 %b substitute the basename of the input file being processed.
292 This is the substring up to (and not including) the last period
293 and not including the directory unless -save-temps was specified
294 to put temporaries in a different location.
295 %B same as %b, but include the file suffix (text after the last period).
297 substitute a file name that has suffix SUFFIX and is chosen
298 once per compilation, and mark the argument a la %d. To reduce
299 exposure to denial-of-service attacks, the file name is now
300 chosen in a way that is hard to predict even when previously
301 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
302 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
303 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
304 had been pre-processed. Previously, %g was simply substituted
305 with a file name chosen once per compilation, without regard
306 to any appended suffix (which was therefore treated just like
307 ordinary text), making such attacks more likely to succeed.
309 like %g, but if -pipe is in effect, expands simply to "-".
311 like %g, but if -pipe is in effect, expands to nothing. (We have both
312 %| and %m to accommodate differences between system assemblers; see
313 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
315 like %g, but generates a new temporary file name even if %uSUFFIX
318 substitutes the last file name generated with %uSUFFIX, generating a
319 new one if there is no such last file name. In the absence of any
320 %uSUFFIX, this is just like %gSUFFIX, except they don't share
321 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
322 would involve the generation of two distinct file names, one
323 for each `%g.s' and another for each `%U.s'. Previously, %U was
324 simply substituted with a file name chosen for the previous %u,
325 without regard to any appended suffix.
327 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
328 writable, and if save-temps is off; otherwise, substitute the name
329 of a temporary file, just like %u. This temporary file is not
330 meant for communication between processes, but rather as a junk
333 substitutes .SUFFIX for the suffixes of a matched switch's args when
334 it is subsequently output with %*. SUFFIX is terminated by the next
336 %d marks the argument containing or following the %d as a
337 temporary file name, so that that file will be deleted if GCC exits
338 successfully. Unlike %g, this contributes no text to the argument.
339 %w marks the argument containing or following the %w as the
340 "output file" of this compilation. This puts the argument
341 into the sequence of arguments that %o will substitute later.
342 %V indicates that this compilation produces no "output file".
344 like %{...} but mark last argument supplied within
345 as a file to be deleted on failure.
346 %o substitutes the names of all the output files, with spaces
347 automatically placed around them. You should write spaces
348 around the %o as well or the results are undefined.
349 %o is for use in the specs for running the linker.
350 Input files whose names have no recognized suffix are not compiled
351 at all, but they are included among the output files, so they will
353 %O substitutes the suffix for object files. Note that this is
354 handled specially when it immediately follows %g, %u, or %U
355 (with or without a suffix argument) because of the need for
356 those to form complete file names. The handling is such that
357 %O is treated exactly as if it had already been substituted,
358 except that %g, %u, and %U do not currently support additional
359 SUFFIX characters following %O as they would following, for
361 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
362 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
363 and -B options) and -imultilib as necessary.
364 %s current argument is the name of a library or startup file of some sort.
365 Search for that file in a standard list of directories
366 and substitute the full name found.
367 %eSTR Print STR as an error message. STR is terminated by a newline.
368 Use this when inconsistent options are detected.
369 %nSTR Print STR as a notice. STR is terminated by a newline.
370 %x{OPTION} Accumulate an option for %X.
371 %X Output the accumulated linker options specified by compilations.
372 %Y Output the accumulated assembler options specified by compilations.
373 %Z Output the accumulated preprocessor options specified by compilations.
374 %a process ASM_SPEC as a spec.
375 This allows config.h to specify part of the spec for running as.
376 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
377 used here. This can be used to run a post-processor after the
378 assembler has done its job.
379 %D Dump out a -L option for each directory in startfile_prefixes.
380 If multilib_dir is set, extra entries are generated with it affixed.
381 %l process LINK_SPEC as a spec.
382 %L process LIB_SPEC as a spec.
383 %M Output multilib_os_dir.
384 %G process LIBGCC_SPEC as a spec.
385 %R Output the concatenation of target_system_root and
386 target_sysroot_suffix.
387 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
388 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
389 %C process CPP_SPEC as a spec.
390 %1 process CC1_SPEC as a spec.
391 %2 process CC1PLUS_SPEC as a spec.
392 %* substitute the variable part of a matched option. (See below.)
393 Note that each comma in the substituted string is replaced by
394 a single space. A space is appended after the last substition
395 unless there is more text in current sequence.
396 %<S remove all occurrences of -S from the command line.
397 Note - this command is position dependent. % commands in the
398 spec string before this one will see -S, % commands in the
399 spec string after this one will not.
400 %>S Similar to "%<S", but keep it in the GCC command line.
401 %<S* remove all occurrences of all switches beginning with -S from the
404 Call the named function FUNCTION, passing it ARGS. ARGS is
405 first processed as a nested spec string, then split into an
406 argument vector in the usual fashion. The function returns
407 a string which is processed as if it had appeared literally
408 as part of the current spec.
409 %{S} substitutes the -S switch, if that switch was given to GCC.
410 If that switch was not specified, this substitutes nothing.
411 Here S is a metasyntactic variable.
412 %{S*} substitutes all the switches specified to GCC whose names start
413 with -S. This is used for -o, -I, etc; switches that take
414 arguments. GCC considers `-o foo' as being one switch whose
415 name starts with `o'. %{o*} would substitute this text,
416 including the space; thus, two arguments would be generated.
417 %{S*&T*} likewise, but preserve order of S and T options (the order
418 of S and T in the spec is not significant). Can be any number
419 of ampersand-separated variables; for each the wild card is
420 optional. Useful for CPP as %{D*&U*&A*}.
422 %{S:X} substitutes X, if the -S switch was given to GCC.
423 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
424 %{S*:X} substitutes X if one or more switches whose names start
425 with -S was given to GCC. Normally X is substituted only
426 once, no matter how many such switches appeared. However,
427 if %* appears somewhere in X, then X will be substituted
428 once for each matching switch, with the %* replaced by the
429 part of that switch that matched the '*'. A space will be
430 appended after the last substition unless there is more
431 text in current sequence.
432 %{.S:X} substitutes X, if processing a file with suffix S.
433 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
434 %{,S:X} substitutes X, if processing a file which will use spec S.
435 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
437 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
438 combined with '!', '.', ',', and '*' as above binding stronger
440 If %* appears in X, all of the alternatives must be starred, and
441 only the first matching alternative is substituted.
442 %{%:function(args):X}
443 Call function named FUNCTION with args ARGS. If the function
444 returns non-NULL, then X is substituted, if it returns
445 NULL, it isn't substituted.
446 %{S:X; if S was given to GCC, substitutes X;
447 T:Y; else if T was given to GCC, substitutes Y;
448 :D} else substitutes D. There can be as many clauses as you need.
449 This may be combined with '.', '!', ',', '|', and '*' as above.
451 %(Spec) processes a specification defined in a specs file as *Spec:
453 The conditional text X in a %{S:X} or similar construct may contain
454 other nested % constructs or spaces, or even newlines. They are
455 processed as usual, as described above. Trailing white space in X is
456 ignored. White space may also appear anywhere on the left side of the
457 colon in these constructs, except between . or * and the corresponding
460 The -O, -f, -g, -m, and -W switches are handled specifically in these
461 constructs. If another value of -O or the negated form of a -f, -m, or
462 -W switch is found later in the command line, the earlier switch
463 value is ignored, except with {S*} where S is just one letter; this
464 passes all matching options.
466 The character | at the beginning of the predicate text is used to indicate
467 that a command should be piped to the following command, but only if -pipe
470 Note that it is built into GCC which switches take arguments and which
471 do not. You might think it would be useful to generalize this to
472 allow each compiler's spec to say which switches take arguments. But
473 this cannot be done in a consistent fashion. GCC cannot even decide
474 which input files have been specified without knowing which switches
475 take arguments, and it must know which input files to compile in order
476 to tell which compilers to run.
478 GCC also knows implicitly that arguments starting in `-l' are to be
479 treated as compiler output files, and passed to the linker in their
480 proper position among the other output files. */
482 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
484 /* config.h can define ASM_SPEC to provide extra args to the assembler
485 or extra switch-translations. */
490 /* config.h can define ASM_FINAL_SPEC to run a post processor after
491 the assembler has run. */
492 #ifndef ASM_FINAL_SPEC
493 #define ASM_FINAL_SPEC \
495 objcopy --extract-dwo \
496 %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \
497 %{c:%{o*:%:replace-extension(%{o*:%*} .dwo)}%{!o*:%b.dwo}}%{!c:%b.dwo} \n\
498 objcopy --strip-dwo \
499 %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \
503 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
504 or extra switch-translations. */
509 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
510 or extra switch-translations. */
515 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
516 or extra switch-translations. */
518 #define CC1PLUS_SPEC ""
521 /* config.h can define LINK_SPEC to provide extra args to the linker
522 or extra switch-translations. */
527 /* config.h can define LIB_SPEC to override the default libraries. */
529 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
532 /* When using -fsplit-stack we need to wrap pthread_create, in order
533 to initialize the stack guard. We always use wrapping, rather than
534 shared library ordering, and we keep the wrapper function in
535 libgcc. This is not yet a real spec, though it could become one;
536 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping
537 only works with GNU ld and gold. */
538 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}"
541 #define STATIC_LIBASAN_LIBS \
542 " %{static-libasan:%:include(libsanitizer.spec)%(link_libasan)}"
543 #ifdef LIBASAN_EARLY_SPEC
544 #define LIBASAN_SPEC STATIC_LIBASAN_LIBS
545 #elif defined(HAVE_LD_STATIC_DYNAMIC)
546 #define LIBASAN_SPEC "%{static-libasan:" LD_STATIC_OPTION \
547 "} -lasan %{static-libasan:" LD_DYNAMIC_OPTION "}" \
550 #define LIBASAN_SPEC "-lasan" STATIC_LIBASAN_LIBS
554 #ifndef LIBASAN_EARLY_SPEC
555 #define LIBASAN_EARLY_SPEC ""
559 #define STATIC_LIBTSAN_LIBS \
560 " %{static-libtsan:%:include(libsanitizer.spec)%(link_libtsan)}"
561 #ifdef LIBTSAN_EARLY_SPEC
562 #define LIBTSAN_SPEC STATIC_LIBTSAN_LIBS
563 #elif defined(HAVE_LD_STATIC_DYNAMIC)
564 #define LIBTSAN_SPEC "%{static-libtsan:" LD_STATIC_OPTION \
565 "} -ltsan %{static-libtsan:" LD_DYNAMIC_OPTION "}" \
568 #define LIBTSAN_SPEC "-ltsan" STATIC_LIBTSAN_LIBS
572 #ifndef LIBTSAN_EARLY_SPEC
573 #define LIBTSAN_EARLY_SPEC ""
577 #define STATIC_LIBLSAN_LIBS \
578 " %{static-liblsan:%:include(libsanitizer.spec)%(link_liblsan)}"
579 #ifdef HAVE_LD_STATIC_DYNAMIC
580 #define LIBLSAN_SPEC "%{!shared:%{static-liblsan:" LD_STATIC_OPTION \
581 "} -llsan %{static-liblsan:" LD_DYNAMIC_OPTION "}" \
582 STATIC_LIBLSAN_LIBS "}"
584 #define LIBLSAN_SPEC "%{!shared:-llsan" STATIC_LIBLSAN_LIBS "}"
588 #ifndef LIBUBSAN_SPEC
589 #define STATIC_LIBUBSAN_LIBS \
590 " %{static-libubsan:%:include(libsanitizer.spec)%(link_libubsan)}"
591 #ifdef HAVE_LD_STATIC_DYNAMIC
592 #define LIBUBSAN_SPEC "%{static-libubsan:" LD_STATIC_OPTION \
593 "} -lubsan %{static-libubsan:" LD_DYNAMIC_OPTION "}" \
596 #define LIBUBSAN_SPEC "-lubsan" STATIC_LIBUBSAN_LIBS
600 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
603 #if defined(REAL_LIBGCC_SPEC)
604 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
605 #elif defined(LINK_LIBGCC_SPECIAL_1)
606 /* Have gcc do the search for libgcc.a. */
607 #define LIBGCC_SPEC "libgcc.a%s"
609 #define LIBGCC_SPEC "-lgcc"
613 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
614 #ifndef STARTFILE_SPEC
615 #define STARTFILE_SPEC \
616 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
619 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
621 #define ENDFILE_SPEC ""
625 #define LINKER_NAME "collect2"
628 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
629 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
634 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
636 #ifndef ASM_DEBUG_SPEC
637 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
638 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
639 # define ASM_DEBUG_SPEC \
640 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
641 ? "%{!g0:%{gdwarf*:--gdwarf2}%{!gdwarf*:%{g*:--gstabs}}}" ASM_MAP \
642 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
644 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
645 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
647 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
648 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
652 #ifndef ASM_DEBUG_SPEC
653 # define ASM_DEBUG_SPEC ""
656 /* Here is the spec for running the linker, after compiling all files. */
658 /* This is overridable by the target in case they need to specify the
659 -lgcc and -lc order specially, yet not require them to override all
660 of LINK_COMMAND_SPEC. */
661 #ifndef LINK_GCC_C_SEQUENCE_SPEC
662 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
665 #ifndef LINK_SSP_SPEC
666 #ifdef TARGET_LIBC_PROVIDES_SSP
667 #define LINK_SSP_SPEC "%{fstack-protector:}"
669 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-strong|fstack-protector-all:-lssp_nonshared -lssp}"
673 #ifndef LINK_PIE_SPEC
675 #define LINK_PIE_SPEC "%{pie:-pie} "
677 #define LINK_PIE_SPEC "%{pie:} "
681 #ifndef LINK_BUILDID_SPEC
682 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
683 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
687 /* Conditional to test whether the LTO plugin is used or not.
688 FIXME: For slim LTO we will need to enable plugin unconditionally. This
689 still cause problems with PLUGIN_LD != LD and when plugin is built but
690 not useable. For GCC 4.6 we don't support slim LTO and thus we can enable
691 plugin only when LTO is enabled. We still honor explicit
692 -fuse-linker-plugin if the linker used understands -plugin. */
694 /* The linker has some plugin support. */
695 #if HAVE_LTO_PLUGIN > 0
696 /* The linker used has full plugin support, use LTO plugin by default. */
697 #if HAVE_LTO_PLUGIN == 2
698 #define PLUGIN_COND "!fno-use-linker-plugin:%{!fno-lto"
699 #define PLUGIN_COND_CLOSE "}"
701 /* The linker used has limited plugin support, use LTO plugin with explicit
702 -fuse-linker-plugin. */
703 #define PLUGIN_COND "fuse-linker-plugin"
704 #define PLUGIN_COND_CLOSE ""
706 #define LINK_PLUGIN_SPEC \
708 -plugin %(linker_plugin_file) \
709 -plugin-opt=%(lto_wrapper) \
710 -plugin-opt=-fresolution=%u.res \
711 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
714 /* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */
715 #define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\
716 %e-fuse-linker-plugin is not supported in this configuration}"
719 /* Linker command line options for -fsanitize= early on the command line. */
720 #ifndef SANITIZER_EARLY_SPEC
721 #define SANITIZER_EARLY_SPEC "\
722 %{!nostdlib:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_EARLY_SPEC "} \
723 %{%:sanitize(thread):" LIBTSAN_EARLY_SPEC "}}}"
726 /* Linker command line options for -fsanitize= late on the command line. */
727 #ifndef SANITIZER_SPEC
728 #define SANITIZER_SPEC "\
729 %{!nostdlib:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_SPEC "\
730 %{static:%ecannot specify -static with -fsanitize=address}\
731 %{%:sanitize(thread):%e-fsanitize=address is incompatible with -fsanitize=thread}}\
732 %{%:sanitize(thread):" LIBTSAN_SPEC "\
733 %{!pie:%{!shared:%e-fsanitize=thread linking must be done with -pie or -shared}}}\
734 %{%:sanitize(undefined):" LIBUBSAN_SPEC "}\
735 %{%:sanitize(leak):" LIBLSAN_SPEC "}}}"
738 /* This is the spec to use, once the code for creating the vtable
739 verification runtime library, libvtv.so, has been created. Currently
740 the vtable verification runtime functions are in libstdc++, so we use
741 the spec just below this one. */
742 #ifndef VTABLE_VERIFICATION_SPEC
743 #define VTABLE_VERIFICATION_SPEC "\
744 %{!nostdlib:%{fvtable-verify=std: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}\
745 %{fvtable-verify=preinit: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}}"
748 /* -u* was put back because both BSD and SysV seem to support it. */
749 /* %{static:} simply prevents an error message if the target machine
750 doesn't handle -static. */
751 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
752 scripts which exist in user specified directories, or in standard
754 /* We pass any -flto flags on to the linker, which is expected
755 to understand them. In practice, this means it had better be collect2. */
756 /* %{e*} includes -export-dynamic; see comment in common.opt. */
757 #ifndef LINK_COMMAND_SPEC
758 #define LINK_COMMAND_SPEC "\
759 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
762 "%{flto|flto=*:%<fcompare-debug*} \
763 %{flto} %{flto=*} %l " LINK_PIE_SPEC \
764 "%{fuse-ld=*:-fuse-ld=%*}\
765 %X %{o*} %{e*} %{N} %{n} %{r}\
766 %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}} " VTABLE_VERIFICATION_SPEC " \
767 %{!nostdlib:%{!nostartfiles:%{fupc:%:include(upc-crtbegin.spec)%(upc_crtbegin)}}}\
768 %{static:} %{L*} %(mfwrap) %(link_libgcc) " SANITIZER_EARLY_SPEC " %o\
769 %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
770 %{fgnu-tm:%:include(libitm.spec)%(link_itm)}\
771 %{fupc:%:include(libgupc.spec)%(link_upc)}\
772 %(mflib) " STACK_SPLIT_SPEC "\
773 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} " SANITIZER_SPEC " \
774 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
775 %{!nostdlib:%{!nostartfiles:%{fupc:%:include(upc-crtend.spec)%(upc_crtend)}}}\
776 %{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}"
779 #ifndef LINK_LIBGCC_SPEC
780 /* Generate -L options for startfile prefix list. */
781 # define LINK_LIBGCC_SPEC "%D"
784 #ifndef STARTFILE_PREFIX_SPEC
785 # define STARTFILE_PREFIX_SPEC ""
789 # define SYSROOT_SPEC "--sysroot=%R"
792 #ifndef SYSROOT_SUFFIX_SPEC
793 # define SYSROOT_SUFFIX_SPEC ""
796 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
797 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
800 static const char *asm_debug
= ASM_DEBUG_SPEC
;
801 static const char *cpp_spec
= CPP_SPEC
;
802 static const char *cc1_spec
= CC1_SPEC
;
803 static const char *cc1plus_spec
= CC1PLUS_SPEC
;
804 static const char *link_gcc_c_sequence_spec
= LINK_GCC_C_SEQUENCE_SPEC
;
805 static const char *link_ssp_spec
= LINK_SSP_SPEC
;
806 static const char *asm_spec
= ASM_SPEC
;
807 static const char *asm_final_spec
= ASM_FINAL_SPEC
;
808 static const char *link_spec
= LINK_SPEC
;
809 static const char *lib_spec
= LIB_SPEC
;
810 static const char *link_gomp_spec
= "";
811 static const char *upc_crtbegin_spec
= "";
812 static const char *link_upc_spec
= "";
813 static const char *upc_crtend_spec
= "";
814 static const char *libgcc_spec
= LIBGCC_SPEC
;
815 static const char *endfile_spec
= ENDFILE_SPEC
;
816 static const char *startfile_spec
= STARTFILE_SPEC
;
817 static const char *linker_name_spec
= LINKER_NAME
;
818 static const char *linker_plugin_file_spec
= "";
819 static const char *lto_wrapper_spec
= "";
820 static const char *lto_gcc_spec
= "";
821 static const char *link_command_spec
= LINK_COMMAND_SPEC
;
822 static const char *link_libgcc_spec
= LINK_LIBGCC_SPEC
;
823 static const char *startfile_prefix_spec
= STARTFILE_PREFIX_SPEC
;
824 static const char *sysroot_spec
= SYSROOT_SPEC
;
825 static const char *sysroot_suffix_spec
= SYSROOT_SUFFIX_SPEC
;
826 static const char *sysroot_hdrs_suffix_spec
= SYSROOT_HEADERS_SUFFIX_SPEC
;
827 static const char *self_spec
= "";
829 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
830 There should be no need to override these in target dependent files,
831 but we need to copy them to the specs file so that newer versions
832 of the GCC driver can correctly drive older tool chains with the
833 appropriate -B options. */
835 /* When cpplib handles traditional preprocessing, get rid of this, and
836 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
837 that we default the front end language better. */
838 static const char *trad_capable_cpp
=
839 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}";
841 /* We don't wrap .d files in %W{} since a missing .d file, and
842 therefore no dependency entry, confuses make into thinking a .o
843 file that happens to exist is up-to-date. */
844 static const char *cpp_unique_options
=
845 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
846 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
847 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
848 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
849 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
850 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
851 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
852 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
855 /* This contains cpp options which are common with cc1_options and are passed
856 only when preprocessing only to avoid duplication. We pass the cc1 spec
857 options to the preprocessor so that it the cc1 spec may manipulate
858 options used to set target flags. Those special target flags settings may
859 in turn cause preprocessor symbols to be defined specially. */
860 static const char *cpp_options
=
861 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
862 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
863 %{undef} %{save-temps*:-fpch-preprocess}";
865 /* This contains cpp options which are not passed when the preprocessor
866 output will be used by another program. */
867 static const char *cpp_debug_options
= "%{d*}";
869 /* NB: This is shared amongst all front-ends, except for Ada. */
870 static const char *cc1_options
=
871 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
872 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
873 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
874 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
875 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
876 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
877 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
878 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\
879 %{-target-help:--target-help}\
880 %{-version:--version}\
881 %{-help=*:--help=%*}\
882 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
883 %{fsyntax-only:-o %j} %{-param*}\
884 %{coverage:-fprofile-arcs -ftest-coverage}";
886 static const char *upc_options
=
887 "-fupc %{!fno-upc-pre-include:-include gcc-upc.h}";
889 static const char *asm_options
=
890 "%{-target-help:%:print-asm-header()} "
892 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
893 to the assembler equivalents. */
894 "%{v} %{w:-W} %{I*} "
896 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
898 static const char *invoke_as
=
899 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
901 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
902 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
906 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
907 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
911 /* Some compilers have limits on line lengths, and the multilib_select
912 and/or multilib_matches strings can be very long, so we build them at
914 static struct obstack multilib_obstack
;
915 static const char *multilib_select
;
916 static const char *multilib_matches
;
917 static const char *multilib_defaults
;
918 static const char *multilib_exclusions
;
919 static const char *multilib_reuse
;
921 /* Check whether a particular argument is a default argument. */
923 #ifndef MULTILIB_DEFAULTS
924 #define MULTILIB_DEFAULTS { "" }
927 static const char *const multilib_defaults_raw
[] = MULTILIB_DEFAULTS
;
929 #ifndef DRIVER_SELF_SPECS
930 #define DRIVER_SELF_SPECS ""
933 /* Linking to libgomp implies pthreads. This is particularly important
934 for targets that use different start files and suchlike. */
935 #ifndef GOMP_SELF_SPECS
936 #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}"
939 /* Likewise for -fgnu-tm. */
940 #ifndef GTM_SELF_SPECS
941 #define GTM_SELF_SPECS "%{fgnu-tm: -pthread}"
944 static const char *const driver_self_specs
[] = {
945 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
946 DRIVER_SELF_SPECS
, CONFIGURE_SPECS
, GOMP_SELF_SPECS
, GTM_SELF_SPECS
949 #ifndef OPTION_DEFAULT_SPECS
950 #define OPTION_DEFAULT_SPECS { "", "" }
959 static const struct default_spec
960 option_default_specs
[] = { OPTION_DEFAULT_SPECS
};
964 struct user_specs
*next
;
965 const char *filename
;
968 static struct user_specs
*user_specs_head
, *user_specs_tail
;
971 /* Record the mapping from file suffixes for compilation specs. */
975 const char *suffix
; /* Use this compiler for input files
976 whose names end in this suffix. */
978 const char *spec
; /* To use this compiler, run this spec. */
980 const char *cpp_spec
; /* If non-NULL, substitute this spec
981 for `%C', rather than the usual
983 const int combinable
; /* If nonzero, compiler can deal with
984 multiple source files at once (IMA). */
985 const int needs_preprocessing
; /* If nonzero, source files need to
986 be run through a preprocessor. */
989 /* Pointer to a vector of `struct compiler' that gives the spec for
990 compiling a file, based on its suffix.
991 A file that does not end in any of these suffixes will be passed
992 unchanged to the loader and nothing else will be done to it.
994 An entry containing two 0s is used to terminate the vector.
996 If multiple entries match a file, the last matching one is used. */
998 static struct compiler
*compilers
;
1000 /* Number of entries in `compilers', not counting the null terminator. */
1002 static int n_compilers
;
1004 /* The default list of file name suffixes and their compilation specs. */
1006 static const struct compiler default_compilers
[] =
1008 /* Add lists of suffixes of known languages here. If those languages
1009 were not present when we built the driver, we will hit these copies
1010 and be given a more meaningful error than "file not used since
1011 linking is not done". */
1012 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
1013 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
1014 {".mii", "#Objective-C++", 0, 0, 0},
1015 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
1016 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
1017 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
1018 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
1019 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
1020 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
1021 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
1022 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
1023 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
1024 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
1025 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
1026 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
1027 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
1028 {".r", "#Ratfor", 0, 0, 0},
1029 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
1030 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
1031 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
1032 {".go", "#Go", 0, 1, 0},
1033 /* Next come the entries for C. */
1034 {".c", "@c", 0, 0, 1},
1036 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1037 external preprocessor if -save-temps is given. */
1038 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1041 %eGNU C no longer supports -traditional without -E}\
1042 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1043 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1044 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1046 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1047 cc1 %(cpp_unique_options) %(cc1_options)}}}\
1048 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
1050 "%{!E:%e-E or -x required when input is from standard input}\
1051 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
1052 {".h", "@c-header", 0, 0, 0},
1054 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1055 external preprocessor if -save-temps is given. */
1056 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1058 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1059 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1060 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1062 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
1063 %W{o*:--output-pch=%*}}%V}\
1064 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1065 cc1 %(cpp_unique_options) %(cc1_options)\
1066 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
1067 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
1068 {".i", "@cpp-output", 0, 0, 0},
1070 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
1071 {".s", "@assembler", 0, 0, 0},
1073 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
1074 {".sx", "@assembler-with-cpp", 0, 0, 0},
1075 {".S", "@assembler-with-cpp", 0, 0, 0},
1076 {"@assembler-with-cpp",
1077 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
1078 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1079 %{E|M|MM:%(cpp_debug_options)}\
1080 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1081 as %(asm_debug) %(asm_options) %|.s %A }}}}"
1083 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1084 %{E|M|MM:%(cpp_debug_options)}\
1085 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1086 as %(asm_debug) %(asm_options) %m.s %A }}}}"
1089 {".upc", "@upc", 0, 0, 0},
1091 /* Same as "@c" above, with the addition of %(upc_options). */
1092 "%{E|M|MM:cc1 -E %(upc_options) %(cpp_options) %(cpp_debug_options)}\
1094 %{traditional|ftraditional|traditional-cpp:\
1095 %e UPC does not support traditional compilation}\
1096 %{save-temps|no-integrated-cpp:\
1097 cc1 -E %(upc_options) %(cpp_options)\
1098 %{save-temps:%b.mi} %{!save-temps:%g.mi} \n\
1099 cc1 -fpreprocessed %{save-temps:%b.mi} %{!save-temps:%g.mi}\
1100 %(upc_options) %(cc1_options)}\
1101 %{!save-temps:%{!no-integrated-cpp:\
1102 cc1 %(cpp_unique_options) %(upc_options) %(cc1_options)}}\
1103 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
1106 /* Mark end of table. */
1110 /* Number of elements in default_compilers, not counting the terminator. */
1112 static const int n_default_compilers
= ARRAY_SIZE (default_compilers
) - 1;
1114 typedef char *char_p
; /* For DEF_VEC_P. */
1116 /* A vector of options to give to the linker.
1117 These options are accumulated by %x,
1118 and substituted into the linker command with %X. */
1119 static vec
<char_p
> linker_options
;
1121 /* A vector of options to give to the assembler.
1122 These options are accumulated by -Wa,
1123 and substituted into the assembler command with %Y. */
1124 static vec
<char_p
> assembler_options
;
1126 /* A vector of options to give to the preprocessor.
1127 These options are accumulated by -Wp,
1128 and substituted into the preprocessor command with %Z. */
1129 static vec
<char_p
> preprocessor_options
;
1132 skip_whitespace (char *p
)
1136 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1137 be considered whitespace. */
1138 if (p
[0] == '\n' && p
[1] == '\n' && p
[2] == '\n')
1140 else if (*p
== '\n' || *p
== ' ' || *p
== '\t')
1154 /* Structures to keep track of prefixes to try when looking for files. */
1158 const char *prefix
; /* String to prepend to the path. */
1159 struct prefix_list
*next
; /* Next in linked list. */
1160 int require_machine_suffix
; /* Don't use without machine_suffix. */
1161 /* 2 means try both machine_suffix and just_machine_suffix. */
1162 int priority
; /* Sort key - priority within list. */
1163 int os_multilib
; /* 1 if OS multilib scheme should be used,
1164 0 for GCC multilib scheme. */
1169 struct prefix_list
*plist
; /* List of prefixes to try */
1170 int max_len
; /* Max length of a prefix in PLIST */
1171 const char *name
; /* Name of this list (used in config stuff) */
1174 /* List of prefixes to try when looking for executables. */
1176 static struct path_prefix exec_prefixes
= { 0, 0, "exec" };
1178 /* List of prefixes to try when looking for startup (crt0) files. */
1180 static struct path_prefix startfile_prefixes
= { 0, 0, "startfile" };
1182 /* List of prefixes to try when looking for include files. */
1184 static struct path_prefix include_prefixes
= { 0, 0, "include" };
1186 /* Suffix to attach to directories searched for commands.
1187 This looks like `MACHINE/VERSION/'. */
1189 static const char *machine_suffix
= 0;
1191 /* Suffix to attach to directories searched for commands.
1192 This is just `MACHINE/'. */
1194 static const char *just_machine_suffix
= 0;
1196 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1198 static const char *gcc_exec_prefix
;
1200 /* Adjusted value of standard_libexec_prefix. */
1202 static const char *gcc_libexec_prefix
;
1204 /* Default prefixes to attach to command names. */
1206 #ifndef STANDARD_STARTFILE_PREFIX_1
1207 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1209 #ifndef STANDARD_STARTFILE_PREFIX_2
1210 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1213 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1214 #undef MD_EXEC_PREFIX
1215 #undef MD_STARTFILE_PREFIX
1216 #undef MD_STARTFILE_PREFIX_1
1219 /* If no prefixes defined, use the null string, which will disable them. */
1220 #ifndef MD_EXEC_PREFIX
1221 #define MD_EXEC_PREFIX ""
1223 #ifndef MD_STARTFILE_PREFIX
1224 #define MD_STARTFILE_PREFIX ""
1226 #ifndef MD_STARTFILE_PREFIX_1
1227 #define MD_STARTFILE_PREFIX_1 ""
1230 /* These directories are locations set at configure-time based on the
1231 --prefix option provided to configure. Their initializers are
1232 defined in Makefile.in. These paths are not *directly* used when
1233 gcc_exec_prefix is set because, in that case, we know where the
1234 compiler has been installed, and use paths relative to that
1235 location instead. */
1236 static const char *const standard_exec_prefix
= STANDARD_EXEC_PREFIX
;
1237 static const char *const standard_libexec_prefix
= STANDARD_LIBEXEC_PREFIX
;
1238 static const char *const standard_bindir_prefix
= STANDARD_BINDIR_PREFIX
;
1239 static const char *const standard_startfile_prefix
= STANDARD_STARTFILE_PREFIX
;
1241 /* For native compilers, these are well-known paths containing
1242 components that may be provided by the system. For cross
1243 compilers, these paths are not used. */
1244 static const char *md_exec_prefix
= MD_EXEC_PREFIX
;
1245 static const char *md_startfile_prefix
= MD_STARTFILE_PREFIX
;
1246 static const char *md_startfile_prefix_1
= MD_STARTFILE_PREFIX_1
;
1247 static const char *const standard_startfile_prefix_1
1248 = STANDARD_STARTFILE_PREFIX_1
;
1249 static const char *const standard_startfile_prefix_2
1250 = STANDARD_STARTFILE_PREFIX_2
;
1252 /* A relative path to be used in finding the location of tools
1253 relative to the driver. */
1254 static const char *const tooldir_base_prefix
= TOOLDIR_BASE_PREFIX
;
1256 /* Subdirectory to use for locating libraries. Set by
1257 set_multilib_dir based on the compilation options. */
1259 static const char *multilib_dir
;
1261 /* Subdirectory to use for locating libraries in OS conventions. Set by
1262 set_multilib_dir based on the compilation options. */
1264 static const char *multilib_os_dir
;
1266 /* Subdirectory to use for locating libraries in multiarch conventions. Set by
1267 set_multilib_dir based on the compilation options. */
1269 static const char *multiarch_dir
;
1271 /* Structure to keep track of the specs that have been defined so far.
1272 These are accessed using %(specname) in a compiler or link
1277 /* The following 2 fields must be first */
1278 /* to allow EXTRA_SPECS to be initialized */
1279 const char *name
; /* name of the spec. */
1280 const char *ptr
; /* available ptr if no static pointer */
1282 /* The following fields are not initialized */
1283 /* by EXTRA_SPECS */
1284 const char **ptr_spec
; /* pointer to the spec itself. */
1285 struct spec_list
*next
; /* Next spec in linked list. */
1286 int name_len
; /* length of the name */
1287 bool user_p
; /* whether string come from file spec. */
1288 bool alloc_p
; /* whether string was allocated */
1291 #define INIT_STATIC_SPEC(NAME,PTR) \
1292 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, false, false }
1294 /* List of statically defined specs. */
1295 static struct spec_list static_specs
[] =
1297 INIT_STATIC_SPEC ("asm", &asm_spec
),
1298 INIT_STATIC_SPEC ("asm_debug", &asm_debug
),
1299 INIT_STATIC_SPEC ("asm_final", &asm_final_spec
),
1300 INIT_STATIC_SPEC ("asm_options", &asm_options
),
1301 INIT_STATIC_SPEC ("invoke_as", &invoke_as
),
1302 INIT_STATIC_SPEC ("cpp", &cpp_spec
),
1303 INIT_STATIC_SPEC ("cpp_options", &cpp_options
),
1304 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options
),
1305 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options
),
1306 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp
),
1307 INIT_STATIC_SPEC ("cc1", &cc1_spec
),
1308 INIT_STATIC_SPEC ("cc1_options", &cc1_options
),
1309 INIT_STATIC_SPEC ("upc_options", &upc_options
),
1310 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec
),
1311 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec
),
1312 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec
),
1313 INIT_STATIC_SPEC ("endfile", &endfile_spec
),
1314 INIT_STATIC_SPEC ("link", &link_spec
),
1315 INIT_STATIC_SPEC ("lib", &lib_spec
),
1316 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec
),
1317 INIT_STATIC_SPEC ("upc_crtbegin", &upc_crtbegin_spec
),
1318 INIT_STATIC_SPEC ("link_upc", &link_upc_spec
),
1319 INIT_STATIC_SPEC ("upc_crtend", &upc_crtend_spec
),
1320 INIT_STATIC_SPEC ("libgcc", &libgcc_spec
),
1321 INIT_STATIC_SPEC ("startfile", &startfile_spec
),
1322 INIT_STATIC_SPEC ("cross_compile", &cross_compile
),
1323 INIT_STATIC_SPEC ("version", &compiler_version
),
1324 INIT_STATIC_SPEC ("multilib", &multilib_select
),
1325 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults
),
1326 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra
),
1327 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches
),
1328 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions
),
1329 INIT_STATIC_SPEC ("multilib_options", &multilib_options
),
1330 INIT_STATIC_SPEC ("multilib_reuse", &multilib_reuse
),
1331 INIT_STATIC_SPEC ("linker", &linker_name_spec
),
1332 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec
),
1333 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec
),
1334 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec
),
1335 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec
),
1336 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix
),
1337 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix
),
1338 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1
),
1339 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec
),
1340 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec
),
1341 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec
),
1342 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec
),
1343 INIT_STATIC_SPEC ("self_spec", &self_spec
),
1346 #ifdef EXTRA_SPECS /* additional specs needed */
1347 /* Structure to keep track of just the first two args of a spec_list.
1348 That is all that the EXTRA_SPECS macro gives us. */
1351 const char *const name
;
1352 const char *const ptr
;
1355 static const struct spec_list_1 extra_specs_1
[] = { EXTRA_SPECS
};
1356 static struct spec_list
*extra_specs
= (struct spec_list
*) 0;
1359 /* List of dynamically allocates specs that have been defined so far. */
1361 static struct spec_list
*specs
= (struct spec_list
*) 0;
1363 /* List of static spec functions. */
1365 static const struct spec_function static_spec_functions
[] =
1367 { "getenv", getenv_spec_function
},
1368 { "if-exists", if_exists_spec_function
},
1369 { "if-exists-else", if_exists_else_spec_function
},
1370 { "sanitize", sanitize_spec_function
},
1371 { "replace-outfile", replace_outfile_spec_function
},
1372 { "remove-outfile", remove_outfile_spec_function
},
1373 { "version-compare", version_compare_spec_function
},
1374 { "include", include_spec_function
},
1375 { "find-file", find_file_spec_function
},
1376 { "find-plugindir", find_plugindir_spec_function
},
1377 { "print-asm-header", print_asm_header_spec_function
},
1378 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function
},
1379 { "compare-debug-self-opt", compare_debug_self_opt_spec_function
},
1380 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function
},
1381 { "pass-through-libs", pass_through_libs_spec_func
},
1382 { "replace-extension", replace_extension_spec_func
},
1383 #ifdef EXTRA_SPEC_FUNCTIONS
1384 EXTRA_SPEC_FUNCTIONS
1389 static int processing_spec_function
;
1391 /* Add appropriate libgcc specs to OBSTACK, taking into account
1392 various permutations of -shared-libgcc, -shared, and such. */
1394 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1396 #ifndef USE_LD_AS_NEEDED
1397 #define USE_LD_AS_NEEDED 0
1401 init_gcc_specs (struct obstack
*obstack
, const char *shared_name
,
1402 const char *static_name
, const char *eh_name
)
1406 buf
= concat ("%{static|static-libgcc:", static_name
, " ", eh_name
, "}"
1407 "%{!static:%{!static-libgcc:"
1408 #if USE_LD_AS_NEEDED
1409 "%{!shared-libgcc:",
1410 static_name
, " " LD_AS_NEEDED_OPTION
" ",
1411 shared_name
, " " LD_NO_AS_NEEDED_OPTION
1414 shared_name
, "%{!shared: ", static_name
, "}"
1418 "%{!shared-libgcc:", static_name
, " ", eh_name
, "}"
1419 "%{shared-libgcc:", shared_name
, " ", static_name
, "}"
1423 "%{shared-libgcc:", shared_name
, "}"
1424 "%{!shared-libgcc:", static_name
, "}"
1427 "%{shared:", shared_name
, "}"
1432 obstack_grow (obstack
, buf
, strlen (buf
));
1435 #endif /* ENABLE_SHARED_LIBGCC */
1437 /* Initialize the specs lookup routines. */
1442 struct spec_list
*next
= (struct spec_list
*) 0;
1443 struct spec_list
*sl
= (struct spec_list
*) 0;
1447 return; /* Already initialized. */
1450 fnotice (stderr
, "Using built-in specs.\n");
1453 extra_specs
= XCNEWVEC (struct spec_list
, ARRAY_SIZE (extra_specs_1
));
1455 for (i
= ARRAY_SIZE (extra_specs_1
) - 1; i
>= 0; i
--)
1457 sl
= &extra_specs
[i
];
1458 sl
->name
= extra_specs_1
[i
].name
;
1459 sl
->ptr
= extra_specs_1
[i
].ptr
;
1461 sl
->name_len
= strlen (sl
->name
);
1462 sl
->ptr_spec
= &sl
->ptr
;
1467 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1469 sl
= &static_specs
[i
];
1474 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1475 /* ??? If neither -shared-libgcc nor --static-libgcc was
1476 seen, then we should be making an educated guess. Some proposed
1477 heuristics for ELF include:
1479 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1480 program will be doing dynamic loading, which will likely
1481 need the shared libgcc.
1483 (2) If "-ldl", then it's also a fair bet that we're doing
1486 (3) For each ET_DYN we're linking against (either through -lfoo
1487 or /some/path/foo.so), check to see whether it or one of
1488 its dependencies depends on a shared libgcc.
1492 If the runtime is fixed to look for program headers instead
1493 of calling __register_frame_info at all, for each object,
1494 use the shared libgcc if any EH symbol referenced.
1496 If crtstuff is fixed to not invoke __register_frame_info
1497 automatically, for each object, use the shared libgcc if
1498 any non-empty unwind section found.
1500 Doing any of this probably requires invoking an external program to
1501 do the actual object file scanning. */
1503 const char *p
= libgcc_spec
;
1506 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1507 when given the proper command line arguments. */
1510 if (in_sep
&& *p
== '-' && strncmp (p
, "-lgcc", 5) == 0)
1512 init_gcc_specs (&obstack
,
1514 #ifdef USE_LIBUNWIND_EXCEPTIONS
1520 #ifdef USE_LIBUNWIND_EXCEPTIONS
1521 # ifdef HAVE_LD_STATIC_DYNAMIC
1522 " %{!static:" LD_STATIC_OPTION
"} -lunwind"
1523 " %{!static:" LD_DYNAMIC_OPTION
"}"
1533 else if (in_sep
&& *p
== 'l' && strncmp (p
, "libgcc.a%s", 10) == 0)
1535 /* Ug. We don't know shared library extensions. Hope that
1536 systems that use this form don't do shared libraries. */
1537 init_gcc_specs (&obstack
,
1541 #ifdef USE_LIBUNWIND_EXCEPTIONS
1550 obstack_1grow (&obstack
, *p
);
1551 in_sep
= (*p
== ' ');
1556 obstack_1grow (&obstack
, '\0');
1557 libgcc_spec
= XOBFINISH (&obstack
, const char *);
1560 #ifdef USE_AS_TRADITIONAL_FORMAT
1561 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1563 static const char tf
[] = "--traditional-format ";
1564 obstack_grow (&obstack
, tf
, sizeof (tf
) - 1);
1565 obstack_grow0 (&obstack
, asm_spec
, strlen (asm_spec
));
1566 asm_spec
= XOBFINISH (&obstack
, const char *);
1570 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \
1571 defined LINKER_HASH_STYLE
1572 # ifdef LINK_BUILDID_SPEC
1573 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1574 obstack_grow (&obstack
, LINK_BUILDID_SPEC
, sizeof (LINK_BUILDID_SPEC
) - 1);
1576 # ifdef LINK_EH_SPEC
1577 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1578 obstack_grow (&obstack
, LINK_EH_SPEC
, sizeof (LINK_EH_SPEC
) - 1);
1580 # ifdef LINKER_HASH_STYLE
1581 /* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had
1584 static const char hash_style
[] = "--hash-style=";
1585 obstack_grow (&obstack
, hash_style
, sizeof (hash_style
) - 1);
1586 obstack_grow (&obstack
, LINKER_HASH_STYLE
, sizeof (LINKER_HASH_STYLE
) - 1);
1587 obstack_1grow (&obstack
, ' ');
1590 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
1591 link_spec
= XOBFINISH (&obstack
, const char *);
1597 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1598 removed; If the spec starts with a + then SPEC is added to the end of the
1602 set_spec (const char *name
, const char *spec
, bool user_p
)
1604 struct spec_list
*sl
;
1605 const char *old_spec
;
1606 int name_len
= strlen (name
);
1609 /* If this is the first call, initialize the statically allocated specs. */
1612 struct spec_list
*next
= (struct spec_list
*) 0;
1613 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1615 sl
= &static_specs
[i
];
1622 /* See if the spec already exists. */
1623 for (sl
= specs
; sl
; sl
= sl
->next
)
1624 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, name
))
1629 /* Not found - make it. */
1630 sl
= XNEW (struct spec_list
);
1631 sl
->name
= xstrdup (name
);
1632 sl
->name_len
= name_len
;
1633 sl
->ptr_spec
= &sl
->ptr
;
1635 *(sl
->ptr_spec
) = "";
1640 old_spec
= *(sl
->ptr_spec
);
1641 *(sl
->ptr_spec
) = ((spec
[0] == '+' && ISSPACE ((unsigned char)spec
[1]))
1642 ? concat (old_spec
, spec
+ 1, NULL
)
1647 fnotice (stderr
, "Setting spec %s to '%s'\n\n", name
, *(sl
->ptr_spec
));
1650 /* Free the old spec. */
1651 if (old_spec
&& sl
->alloc_p
)
1652 free (CONST_CAST (char *, old_spec
));
1654 sl
->user_p
= user_p
;
1658 /* Accumulate a command (program name and args), and run it. */
1660 typedef const char *const_char_p
; /* For DEF_VEC_P. */
1662 /* Vector of pointers to arguments in the current line of specifications. */
1664 static vec
<const_char_p
> argbuf
;
1666 /* Position in the argbuf vector containing the name of the output file
1667 (the value associated with the "-o" flag). */
1669 static int have_o_argbuf_index
= 0;
1671 /* Were the options -c, -S or -E passed. */
1672 static int have_c
= 0;
1674 /* Was the option -o passed. */
1675 static int have_o
= 0;
1677 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1678 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1681 static struct temp_name
{
1682 const char *suffix
; /* suffix associated with the code. */
1683 int length
; /* strlen (suffix). */
1684 int unique
; /* Indicates whether %g or %u/%U was used. */
1685 const char *filename
; /* associated filename. */
1686 int filename_length
; /* strlen (filename). */
1687 struct temp_name
*next
;
1690 /* Number of commands executed so far. */
1692 static int execution_count
;
1694 /* Number of commands that exited with a signal. */
1696 static int signal_count
;
1698 /* Allocate the argument vector. */
1706 /* Clear out the vector of arguments (after a command is executed). */
1711 argbuf
.truncate (0);
1714 /* Add one argument to the vector at the end.
1715 This is done when a space is seen or at the end of the line.
1716 If DELETE_ALWAYS is nonzero, the arg is a filename
1717 and the file should be deleted eventually.
1718 If DELETE_FAILURE is nonzero, the arg is a filename
1719 and the file should be deleted if this compilation fails. */
1722 store_arg (const char *arg
, int delete_always
, int delete_failure
)
1724 argbuf
.safe_push (arg
);
1726 if (strcmp (arg
, "-o") == 0)
1727 have_o_argbuf_index
= argbuf
.length ();
1728 if (delete_always
|| delete_failure
)
1731 /* If the temporary file we should delete is specified as
1732 part of a joined argument extract the filename. */
1734 && (p
= strrchr (arg
, '=')))
1736 record_temp_file (arg
, delete_always
, delete_failure
);
1740 /* Load specs from a file name named FILENAME, replacing occurrences of
1741 various different types of line-endings, \r\n, \n\r and just \r, with
1745 load_specs (const char *filename
)
1749 struct stat statbuf
;
1756 fnotice (stderr
, "Reading specs from %s\n", filename
);
1758 /* Open and stat the file. */
1759 desc
= open (filename
, O_RDONLY
, 0);
1761 pfatal_with_name (filename
);
1762 if (stat (filename
, &statbuf
) < 0)
1763 pfatal_with_name (filename
);
1765 /* Read contents of file into BUFFER. */
1766 buffer
= XNEWVEC (char, statbuf
.st_size
+ 1);
1767 readlen
= read (desc
, buffer
, (unsigned) statbuf
.st_size
);
1769 pfatal_with_name (filename
);
1770 buffer
[readlen
] = 0;
1773 specs
= XNEWVEC (char, readlen
+ 1);
1775 for (buffer_p
= buffer
; buffer_p
&& *buffer_p
; buffer_p
++)
1781 if (buffer_p
> buffer
&& *(buffer_p
- 1) == '\n') /* \n\r */
1783 else if (*(buffer_p
+ 1) == '\n') /* \r\n */
1797 /* Read compilation specs from a file named FILENAME,
1798 replacing the default ones.
1800 A suffix which starts with `*' is a definition for
1801 one of the machine-specific sub-specs. The "suffix" should be
1802 *asm, *cc1, *cpp, *link, *startfile, etc.
1803 The corresponding spec is stored in asm_spec, etc.,
1804 rather than in the `compilers' vector.
1806 Anything invalid in the file is a fatal error. */
1809 read_specs (const char *filename
, bool main_p
, bool user_p
)
1814 buffer
= load_specs (filename
);
1816 /* Scan BUFFER for specs, putting them in the vector. */
1822 char *in
, *out
, *p1
, *p2
, *p3
;
1824 /* Advance P in BUFFER to the next nonblank nocomment line. */
1825 p
= skip_whitespace (p
);
1829 /* Is this a special command that starts with '%'? */
1830 /* Don't allow this for the main specs file, since it would
1831 encourage people to overwrite it. */
1832 if (*p
== '%' && !main_p
)
1835 while (*p
&& *p
!= '\n')
1841 if (!strncmp (p1
, "%include", sizeof ("%include") - 1)
1842 && (p1
[sizeof "%include" - 1] == ' '
1843 || p1
[sizeof "%include" - 1] == '\t'))
1847 p1
+= sizeof ("%include");
1848 while (*p1
== ' ' || *p1
== '\t')
1851 if (*p1
++ != '<' || p
[-2] != '>')
1852 fatal_error ("specs %%include syntax malformed after "
1854 (long) (p1
- buffer
+ 1));
1857 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1858 read_specs (new_filename
? new_filename
: p1
, false, user_p
);
1861 else if (!strncmp (p1
, "%include_noerr", sizeof "%include_noerr" - 1)
1862 && (p1
[sizeof "%include_noerr" - 1] == ' '
1863 || p1
[sizeof "%include_noerr" - 1] == '\t'))
1867 p1
+= sizeof "%include_noerr";
1868 while (*p1
== ' ' || *p1
== '\t')
1871 if (*p1
++ != '<' || p
[-2] != '>')
1872 fatal_error ("specs %%include syntax malformed after "
1874 (long) (p1
- buffer
+ 1));
1877 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1879 read_specs (new_filename
, false, user_p
);
1880 else if (verbose_flag
)
1881 fnotice (stderr
, "could not find specs file %s\n", p1
);
1884 else if (!strncmp (p1
, "%rename", sizeof "%rename" - 1)
1885 && (p1
[sizeof "%rename" - 1] == ' '
1886 || p1
[sizeof "%rename" - 1] == '\t'))
1889 struct spec_list
*sl
;
1890 struct spec_list
*newsl
;
1892 /* Get original name. */
1893 p1
+= sizeof "%rename";
1894 while (*p1
== ' ' || *p1
== '\t')
1897 if (! ISALPHA ((unsigned char) *p1
))
1898 fatal_error ("specs %%rename syntax malformed after "
1900 (long) (p1
- buffer
));
1903 while (*p2
&& !ISSPACE ((unsigned char) *p2
))
1906 if (*p2
!= ' ' && *p2
!= '\t')
1907 fatal_error ("specs %%rename syntax malformed after "
1909 (long) (p2
- buffer
));
1913 while (*p2
== ' ' || *p2
== '\t')
1916 if (! ISALPHA ((unsigned char) *p2
))
1917 fatal_error ("specs %%rename syntax malformed after "
1919 (long) (p2
- buffer
));
1921 /* Get new spec name. */
1923 while (*p3
&& !ISSPACE ((unsigned char) *p3
))
1927 fatal_error ("specs %%rename syntax malformed after "
1929 (long) (p3
- buffer
));
1932 for (sl
= specs
; sl
; sl
= sl
->next
)
1933 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, p1
))
1937 fatal_error ("specs %s spec was not found to be renamed", p1
);
1939 if (strcmp (p1
, p2
) == 0)
1942 for (newsl
= specs
; newsl
; newsl
= newsl
->next
)
1943 if (strcmp (newsl
->name
, p2
) == 0)
1944 fatal_error ("%s: attempt to rename spec %qs to "
1945 "already defined spec %qs",
1950 fnotice (stderr
, "rename spec %s to %s\n", p1
, p2
);
1952 fnotice (stderr
, "spec is '%s'\n\n", *(sl
->ptr_spec
));
1956 set_spec (p2
, *(sl
->ptr_spec
), user_p
);
1958 free (CONST_CAST (char *, *(sl
->ptr_spec
)));
1960 *(sl
->ptr_spec
) = "";
1965 fatal_error ("specs unknown %% command after %ld characters",
1966 (long) (p1
- buffer
));
1969 /* Find the colon that should end the suffix. */
1971 while (*p1
&& *p1
!= ':' && *p1
!= '\n')
1974 /* The colon shouldn't be missing. */
1976 fatal_error ("specs file malformed after %ld characters",
1977 (long) (p1
- buffer
));
1979 /* Skip back over trailing whitespace. */
1981 while (p2
> buffer
&& (p2
[-1] == ' ' || p2
[-1] == '\t'))
1984 /* Copy the suffix to a string. */
1985 suffix
= save_string (p
, p2
- p
);
1986 /* Find the next line. */
1987 p
= skip_whitespace (p1
+ 1);
1989 fatal_error ("specs file malformed after %ld characters",
1990 (long) (p
- buffer
));
1993 /* Find next blank line or end of string. */
1994 while (*p1
&& !(*p1
== '\n' && (p1
[1] == '\n' || p1
[1] == '\0')))
1997 /* Specs end at the blank line and do not include the newline. */
1998 spec
= save_string (p
, p1
- p
);
2001 /* Delete backslash-newline sequences from the spec. */
2006 if (in
[0] == '\\' && in
[1] == '\n')
2008 else if (in
[0] == '#')
2009 while (*in
&& *in
!= '\n')
2017 if (suffix
[0] == '*')
2019 if (! strcmp (suffix
, "*link_command"))
2020 link_command_spec
= spec
;
2022 set_spec (suffix
+ 1, spec
, user_p
);
2026 /* Add this pair to the vector. */
2028 = XRESIZEVEC (struct compiler
, compilers
, n_compilers
+ 2);
2030 compilers
[n_compilers
].suffix
= suffix
;
2031 compilers
[n_compilers
].spec
= spec
;
2033 memset (&compilers
[n_compilers
], 0, sizeof compilers
[n_compilers
]);
2037 link_command_spec
= spec
;
2040 if (link_command_spec
== 0)
2041 fatal_error ("spec file has no spec for linking");
2044 /* Record the names of temporary files we tell compilers to write,
2045 and delete them at the end of the run. */
2047 /* This is the common prefix we use to make temp file names.
2048 It is chosen once for each run of this program.
2049 It is substituted into a spec by %g or %j.
2050 Thus, all temp file names contain this prefix.
2051 In practice, all temp file names start with this prefix.
2053 This prefix comes from the envvar TMPDIR if it is defined;
2054 otherwise, from the P_tmpdir macro if that is defined;
2055 otherwise, in /usr/tmp or /tmp;
2056 or finally the current directory if all else fails. */
2058 static const char *temp_filename
;
2060 /* Length of the prefix. */
2062 static int temp_filename_length
;
2064 /* Define the list of temporary files to delete. */
2069 struct temp_file
*next
;
2072 /* Queue of files to delete on success or failure of compilation. */
2073 static struct temp_file
*always_delete_queue
;
2074 /* Queue of files to delete on failure of compilation. */
2075 static struct temp_file
*failure_delete_queue
;
2077 /* Record FILENAME as a file to be deleted automatically.
2078 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2079 otherwise delete it in any case.
2080 FAIL_DELETE nonzero means delete it if a compilation step fails;
2081 otherwise delete it in any case. */
2084 record_temp_file (const char *filename
, int always_delete
, int fail_delete
)
2086 char *const name
= xstrdup (filename
);
2090 struct temp_file
*temp
;
2091 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
2092 if (! filename_cmp (name
, temp
->name
))
2095 temp
= XNEW (struct temp_file
);
2096 temp
->next
= always_delete_queue
;
2098 always_delete_queue
= temp
;
2105 struct temp_file
*temp
;
2106 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
2107 if (! filename_cmp (name
, temp
->name
))
2113 temp
= XNEW (struct temp_file
);
2114 temp
->next
= failure_delete_queue
;
2116 failure_delete_queue
= temp
;
2122 /* Delete all the temporary files whose names we previously recorded. */
2124 #ifndef DELETE_IF_ORDINARY
2125 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2128 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2129 if (unlink (NAME) < 0) \
2131 perror_with_name (NAME); \
2136 delete_if_ordinary (const char *name
)
2142 printf ("Delete %s? (y or n) ", name
);
2146 while ((c
= getchar ()) != '\n' && c
!= EOF
)
2149 if (i
== 'y' || i
== 'Y')
2151 DELETE_IF_ORDINARY (name
, st
, verbose_flag
);
2155 delete_temp_files (void)
2157 struct temp_file
*temp
;
2159 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
2160 delete_if_ordinary (temp
->name
);
2161 always_delete_queue
= 0;
2164 /* Delete all the files to be deleted on error. */
2167 delete_failure_queue (void)
2169 struct temp_file
*temp
;
2171 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
2172 delete_if_ordinary (temp
->name
);
2176 clear_failure_queue (void)
2178 failure_delete_queue
= 0;
2181 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2183 If DO_MULTI is true iterate over the paths twice, first with multilib
2184 suffix then without, otherwise iterate over the paths once without
2185 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2186 to avoid visiting the same path twice, but we could do better. For
2187 instance, /usr/lib/../lib is considered different from /usr/lib.
2188 At least EXTRA_SPACE chars past the end of the path passed to
2189 CALLBACK are available for use by the callback.
2190 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2192 Returns the value returned by CALLBACK. */
2195 for_each_path (const struct path_prefix
*paths
,
2198 void *(*callback
) (char *, void *),
2199 void *callback_info
)
2201 struct prefix_list
*pl
;
2202 const char *multi_dir
= NULL
;
2203 const char *multi_os_dir
= NULL
;
2204 const char *multiarch_suffix
= NULL
;
2205 const char *multi_suffix
;
2206 const char *just_multi_suffix
;
2209 bool skip_multi_dir
= false;
2210 bool skip_multi_os_dir
= false;
2212 multi_suffix
= machine_suffix
;
2213 just_multi_suffix
= just_machine_suffix
;
2214 if (do_multi
&& multilib_dir
&& strcmp (multilib_dir
, ".") != 0)
2216 multi_dir
= concat (multilib_dir
, dir_separator_str
, NULL
);
2217 multi_suffix
= concat (multi_suffix
, multi_dir
, NULL
);
2218 just_multi_suffix
= concat (just_multi_suffix
, multi_dir
, NULL
);
2220 if (do_multi
&& multilib_os_dir
&& strcmp (multilib_os_dir
, ".") != 0)
2221 multi_os_dir
= concat (multilib_os_dir
, dir_separator_str
, NULL
);
2223 multiarch_suffix
= concat (multiarch_dir
, dir_separator_str
, NULL
);
2227 size_t multi_dir_len
= 0;
2228 size_t multi_os_dir_len
= 0;
2229 size_t multiarch_len
= 0;
2231 size_t just_suffix_len
;
2235 multi_dir_len
= strlen (multi_dir
);
2237 multi_os_dir_len
= strlen (multi_os_dir
);
2238 if (multiarch_suffix
)
2239 multiarch_len
= strlen (multiarch_suffix
);
2240 suffix_len
= strlen (multi_suffix
);
2241 just_suffix_len
= strlen (just_multi_suffix
);
2245 len
= paths
->max_len
+ extra_space
+ 1;
2246 len
+= MAX (MAX (suffix_len
, multi_os_dir_len
), multiarch_len
);
2247 path
= XNEWVEC (char, len
);
2250 for (pl
= paths
->plist
; pl
!= 0; pl
= pl
->next
)
2252 len
= strlen (pl
->prefix
);
2253 memcpy (path
, pl
->prefix
, len
);
2255 /* Look first in MACHINE/VERSION subdirectory. */
2256 if (!skip_multi_dir
)
2258 memcpy (path
+ len
, multi_suffix
, suffix_len
+ 1);
2259 ret
= callback (path
, callback_info
);
2264 /* Some paths are tried with just the machine (ie. target)
2265 subdir. This is used for finding as, ld, etc. */
2267 && pl
->require_machine_suffix
== 2)
2269 memcpy (path
+ len
, just_multi_suffix
, just_suffix_len
+ 1);
2270 ret
= callback (path
, callback_info
);
2275 /* Now try the multiarch path. */
2277 && !pl
->require_machine_suffix
&& multiarch_dir
)
2279 memcpy (path
+ len
, multiarch_suffix
, multiarch_len
+ 1);
2280 ret
= callback (path
, callback_info
);
2285 /* Now try the base path. */
2286 if (!pl
->require_machine_suffix
2287 && !(pl
->os_multilib
? skip_multi_os_dir
: skip_multi_dir
))
2289 const char *this_multi
;
2290 size_t this_multi_len
;
2292 if (pl
->os_multilib
)
2294 this_multi
= multi_os_dir
;
2295 this_multi_len
= multi_os_dir_len
;
2299 this_multi
= multi_dir
;
2300 this_multi_len
= multi_dir_len
;
2304 memcpy (path
+ len
, this_multi
, this_multi_len
+ 1);
2308 ret
= callback (path
, callback_info
);
2316 if (multi_dir
== NULL
&& multi_os_dir
== NULL
)
2319 /* Run through the paths again, this time without multilibs.
2320 Don't repeat any we have already seen. */
2323 free (CONST_CAST (char *, multi_dir
));
2325 free (CONST_CAST (char *, multi_suffix
));
2326 multi_suffix
= machine_suffix
;
2327 free (CONST_CAST (char *, just_multi_suffix
));
2328 just_multi_suffix
= just_machine_suffix
;
2331 skip_multi_dir
= true;
2334 free (CONST_CAST (char *, multi_os_dir
));
2335 multi_os_dir
= NULL
;
2338 skip_multi_os_dir
= true;
2343 free (CONST_CAST (char *, multi_dir
));
2344 free (CONST_CAST (char *, multi_suffix
));
2345 free (CONST_CAST (char *, just_multi_suffix
));
2348 free (CONST_CAST (char *, multi_os_dir
));
2354 /* Callback for build_search_list. Adds path to obstack being built. */
2356 struct add_to_obstack_info
{
2363 add_to_obstack (char *path
, void *data
)
2365 struct add_to_obstack_info
*info
= (struct add_to_obstack_info
*) data
;
2367 if (info
->check_dir
&& !is_directory (path
, false))
2370 if (!info
->first_time
)
2371 obstack_1grow (info
->ob
, PATH_SEPARATOR
);
2373 obstack_grow (info
->ob
, path
, strlen (path
));
2375 info
->first_time
= false;
2379 /* Add or change the value of an environment variable, outputting the
2380 change to standard error if in verbose mode. */
2382 xputenv (const char *string
)
2385 fnotice (stderr
, "%s\n", string
);
2386 putenv (CONST_CAST (char *, string
));
2389 /* Build a list of search directories from PATHS.
2390 PREFIX is a string to prepend to the list.
2391 If CHECK_DIR_P is true we ensure the directory exists.
2392 If DO_MULTI is true, multilib paths are output first, then
2394 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2395 It is also used by the --print-search-dirs flag. */
2398 build_search_list (const struct path_prefix
*paths
, const char *prefix
,
2399 bool check_dir
, bool do_multi
)
2401 struct add_to_obstack_info info
;
2403 info
.ob
= &collect_obstack
;
2404 info
.check_dir
= check_dir
;
2405 info
.first_time
= true;
2407 obstack_grow (&collect_obstack
, prefix
, strlen (prefix
));
2408 obstack_1grow (&collect_obstack
, '=');
2410 for_each_path (paths
, do_multi
, 0, add_to_obstack
, &info
);
2412 obstack_1grow (&collect_obstack
, '\0');
2413 return XOBFINISH (&collect_obstack
, char *);
2416 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2420 putenv_from_prefixes (const struct path_prefix
*paths
, const char *env_var
,
2423 xputenv (build_search_list (paths
, env_var
, true, do_multi
));
2426 /* Check whether NAME can be accessed in MODE. This is like access,
2427 except that it never considers directories to be executable. */
2430 access_check (const char *name
, int mode
)
2436 if (stat (name
, &st
) < 0
2437 || S_ISDIR (st
.st_mode
))
2441 return access (name
, mode
);
2444 /* Callback for find_a_file. Appends the file name to the directory
2445 path. If the resulting file exists in the right mode, return the
2446 full pathname to the file. */
2448 struct file_at_path_info
{
2457 file_at_path (char *path
, void *data
)
2459 struct file_at_path_info
*info
= (struct file_at_path_info
*) data
;
2460 size_t len
= strlen (path
);
2462 memcpy (path
+ len
, info
->name
, info
->name_len
);
2463 len
+= info
->name_len
;
2465 /* Some systems have a suffix for executable files.
2466 So try appending that first. */
2467 if (info
->suffix_len
)
2469 memcpy (path
+ len
, info
->suffix
, info
->suffix_len
+ 1);
2470 if (access_check (path
, info
->mode
) == 0)
2475 if (access_check (path
, info
->mode
) == 0)
2481 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2482 access to check permissions. If DO_MULTI is true, search multilib
2483 paths then non-multilib paths, otherwise do not search multilib paths.
2484 Return 0 if not found, otherwise return its name, allocated with malloc. */
2487 find_a_file (const struct path_prefix
*pprefix
, const char *name
, int mode
,
2490 struct file_at_path_info info
;
2492 #ifdef DEFAULT_ASSEMBLER
2493 if (! strcmp (name
, "as") && access (DEFAULT_ASSEMBLER
, mode
) == 0)
2494 return xstrdup (DEFAULT_ASSEMBLER
);
2497 #ifdef DEFAULT_LINKER
2498 if (! strcmp (name
, "ld") && access (DEFAULT_LINKER
, mode
) == 0)
2499 return xstrdup (DEFAULT_LINKER
);
2502 /* Determine the filename to execute (special case for absolute paths). */
2504 if (IS_ABSOLUTE_PATH (name
))
2506 if (access (name
, mode
) == 0)
2507 return xstrdup (name
);
2513 info
.suffix
= (mode
& X_OK
) != 0 ? HOST_EXECUTABLE_SUFFIX
: "";
2514 info
.name_len
= strlen (info
.name
);
2515 info
.suffix_len
= strlen (info
.suffix
);
2518 return (char*) for_each_path (pprefix
, do_multi
,
2519 info
.name_len
+ info
.suffix_len
,
2520 file_at_path
, &info
);
2523 /* Ranking of prefixes in the sort list. -B prefixes are put before
2526 enum path_prefix_priority
2528 PREFIX_PRIORITY_B_OPT
,
2529 PREFIX_PRIORITY_LAST
2532 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2533 order according to PRIORITY. Within each PRIORITY, new entries are
2536 If WARN is nonzero, we will warn if no file is found
2537 through this prefix. WARN should point to an int
2538 which will be set to 1 if this entry is used.
2540 COMPONENT is the value to be passed to update_path.
2542 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2543 the complete value of machine_suffix.
2544 2 means try both machine_suffix and just_machine_suffix. */
2547 add_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2548 const char *component
, /* enum prefix_priority */ int priority
,
2549 int require_machine_suffix
, int os_multilib
)
2551 struct prefix_list
*pl
, **prev
;
2554 for (prev
= &pprefix
->plist
;
2555 (*prev
) != NULL
&& (*prev
)->priority
<= priority
;
2556 prev
= &(*prev
)->next
)
2559 /* Keep track of the longest prefix. */
2561 prefix
= update_path (prefix
, component
);
2562 len
= strlen (prefix
);
2563 if (len
> pprefix
->max_len
)
2564 pprefix
->max_len
= len
;
2566 pl
= XNEW (struct prefix_list
);
2567 pl
->prefix
= prefix
;
2568 pl
->require_machine_suffix
= require_machine_suffix
;
2569 pl
->priority
= priority
;
2570 pl
->os_multilib
= os_multilib
;
2572 /* Insert after PREV. */
2577 /* Same as add_prefix, but prepending target_system_root to prefix. */
2578 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2580 add_sysrooted_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2581 const char *component
,
2582 /* enum prefix_priority */ int priority
,
2583 int require_machine_suffix
, int os_multilib
)
2585 if (!IS_ABSOLUTE_PATH (prefix
))
2586 fatal_error ("system path %qs is not absolute", prefix
);
2588 if (target_system_root
)
2590 char *sysroot_no_trailing_dir_separator
= xstrdup (target_system_root
);
2591 size_t sysroot_len
= strlen (target_system_root
);
2594 && target_system_root
[sysroot_len
- 1] == DIR_SEPARATOR
)
2595 sysroot_no_trailing_dir_separator
[sysroot_len
- 1] = '\0';
2597 if (target_sysroot_suffix
)
2598 prefix
= concat (sysroot_no_trailing_dir_separator
,
2599 target_sysroot_suffix
, prefix
, NULL
);
2601 prefix
= concat (sysroot_no_trailing_dir_separator
, prefix
, NULL
);
2603 free (sysroot_no_trailing_dir_separator
);
2605 /* We have to override this because GCC's notion of sysroot
2606 moves along with GCC. */
2610 add_prefix (pprefix
, prefix
, component
, priority
,
2611 require_machine_suffix
, os_multilib
);
2614 /* Execute the command specified by the arguments on the current line of spec.
2615 When using pipes, this includes several piped-together commands
2616 with `|' between them.
2618 Return 0 if successful, -1 if failed. */
2624 int n_commands
; /* # of command. */
2626 struct pex_obj
*pex
;
2629 const char *prog
; /* program name. */
2630 const char **argv
; /* vector of args. */
2634 struct command
*commands
; /* each command buffer with above info. */
2636 gcc_assert (!processing_spec_function
);
2640 string
= find_a_file (&exec_prefixes
,
2641 argbuf
[0], X_OK
, false);
2644 insert_wrapper (wrapper_string
);
2647 /* Count # of piped commands. */
2648 for (n_commands
= 1, i
= 0; argbuf
.iterate (i
, &arg
); i
++)
2649 if (strcmp (arg
, "|") == 0)
2652 /* Get storage for each command. */
2653 commands
= (struct command
*) alloca (n_commands
* sizeof (struct command
));
2655 /* Split argbuf into its separate piped processes,
2656 and record info about each one.
2657 Also search for the programs that are to be run. */
2659 argbuf
.safe_push (0);
2661 commands
[0].prog
= argbuf
[0]; /* first command. */
2662 commands
[0].argv
= argbuf
.address ();
2664 if (!wrapper_string
)
2666 string
= find_a_file (&exec_prefixes
, commands
[0].prog
, X_OK
, false);
2667 commands
[0].argv
[0] = (string
) ? string
: commands
[0].argv
[0];
2670 for (n_commands
= 1, i
= 0; argbuf
.iterate (i
, &arg
); i
++)
2671 if (arg
&& strcmp (arg
, "|") == 0)
2672 { /* each command. */
2673 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2674 fatal_error ("-pipe not supported");
2676 argbuf
[i
] = 0; /* Termination of
2678 commands
[n_commands
].prog
= argbuf
[i
+ 1];
2679 commands
[n_commands
].argv
2680 = &(argbuf
.address ())[i
+ 1];
2681 string
= find_a_file (&exec_prefixes
, commands
[n_commands
].prog
,
2684 commands
[n_commands
].argv
[0] = string
;
2688 /* If -v, print what we are about to do, and maybe query. */
2692 /* For help listings, put a blank line between sub-processes. */
2693 if (print_help_list
)
2694 fputc ('\n', stderr
);
2696 /* Print each piped command as a separate line. */
2697 for (i
= 0; i
< n_commands
; i
++)
2699 const char *const *j
;
2701 if (verbose_only_flag
)
2703 for (j
= commands
[i
].argv
; *j
; j
++)
2706 for (p
= *j
; *p
; ++p
)
2707 if (!ISALNUM ((unsigned char) *p
)
2708 && *p
!= '_' && *p
!= '/' && *p
!= '-' && *p
!= '.')
2712 fprintf (stderr
, " \"");
2713 for (p
= *j
; *p
; ++p
)
2715 if (*p
== '"' || *p
== '\\' || *p
== '$')
2716 fputc ('\\', stderr
);
2719 fputc ('"', stderr
);
2721 /* If it's empty, print "". */
2723 fprintf (stderr
, " \"\"");
2725 fprintf (stderr
, " %s", *j
);
2729 for (j
= commands
[i
].argv
; *j
; j
++)
2730 /* If it's empty, print "". */
2732 fprintf (stderr
, " \"\"");
2734 fprintf (stderr
, " %s", *j
);
2736 /* Print a pipe symbol after all but the last command. */
2737 if (i
+ 1 != n_commands
)
2738 fprintf (stderr
, " |");
2739 fprintf (stderr
, "\n");
2742 if (verbose_only_flag
!= 0)
2744 /* verbose_only_flag should act as if the spec was
2745 executed, so increment execution_count before
2746 returning. This prevents spurious warnings about
2747 unused linker input files, etc. */
2752 fnotice (stderr
, "\nGo ahead? (y or n) ");
2756 while (getchar () != '\n')
2759 if (i
!= 'y' && i
!= 'Y')
2764 #ifdef ENABLE_VALGRIND_CHECKING
2765 /* Run the each command through valgrind. To simplify prepending the
2766 path to valgrind and the option "-q" (for quiet operation unless
2767 something triggers), we allocate a separate argv array. */
2769 for (i
= 0; i
< n_commands
; i
++)
2775 for (argc
= 0; commands
[i
].argv
[argc
] != NULL
; argc
++)
2778 argv
= XALLOCAVEC (const char *, argc
+ 3);
2780 argv
[0] = VALGRIND_PATH
;
2782 for (j
= 2; j
< argc
+ 2; j
++)
2783 argv
[j
] = commands
[i
].argv
[j
- 2];
2786 commands
[i
].argv
= argv
;
2787 commands
[i
].prog
= argv
[0];
2791 /* Run each piped subprocess. */
2793 pex
= pex_init (PEX_USE_PIPES
| ((report_times
|| report_times_to_file
)
2794 ? PEX_RECORD_TIMES
: 0),
2795 progname
, temp_filename
);
2797 fatal_error ("pex_init failed: %m");
2799 for (i
= 0; i
< n_commands
; i
++)
2803 const char *string
= commands
[i
].argv
[0];
2805 errmsg
= pex_run (pex
,
2806 ((i
+ 1 == n_commands
? PEX_LAST
: 0)
2807 | (string
== commands
[i
].prog
? PEX_SEARCH
: 0)),
2808 string
, CONST_CAST (char **, commands
[i
].argv
),
2813 fatal_error (errmsg
);
2817 pfatal_with_name (errmsg
);
2821 if (string
!= commands
[i
].prog
)
2822 free (CONST_CAST (char *, string
));
2827 /* Wait for all the subprocesses to finish. */
2831 struct pex_time
*times
= NULL
;
2834 statuses
= (int *) alloca (n_commands
* sizeof (int));
2835 if (!pex_get_status (pex
, n_commands
, statuses
))
2836 fatal_error ("failed to get exit status: %m");
2838 if (report_times
|| report_times_to_file
)
2840 times
= (struct pex_time
*) alloca (n_commands
* sizeof (struct pex_time
));
2841 if (!pex_get_times (pex
, n_commands
, times
))
2842 fatal_error ("failed to get process times: %m");
2847 for (i
= 0; i
< n_commands
; ++i
)
2849 int status
= statuses
[i
];
2851 if (WIFSIGNALED (status
))
2854 /* SIGPIPE is a special case. It happens in -pipe mode
2855 when the compiler dies before the preprocessor is done,
2856 or the assembler dies before the compiler is done.
2857 There's generally been an error already, and this is
2858 just fallout. So don't generate another error unless
2859 we would otherwise have succeeded. */
2860 if (WTERMSIG (status
) == SIGPIPE
2861 && (signal_count
|| greatest_status
>= MIN_FATAL_STATUS
))
2868 internal_error ("%s (program %s)",
2869 strsignal (WTERMSIG (status
)), commands
[i
].prog
);
2871 else if (WIFEXITED (status
)
2872 && WEXITSTATUS (status
) >= MIN_FATAL_STATUS
)
2874 if (WEXITSTATUS (status
) > greatest_status
)
2875 greatest_status
= WEXITSTATUS (status
);
2879 if (report_times
|| report_times_to_file
)
2881 struct pex_time
*pt
= ×
[i
];
2884 ut
= ((double) pt
->user_seconds
2885 + (double) pt
->user_microseconds
/ 1.0e6
);
2886 st
= ((double) pt
->system_seconds
2887 + (double) pt
->system_microseconds
/ 1.0e6
);
2892 fnotice (stderr
, "# %s %.2f %.2f\n",
2893 commands
[i
].prog
, ut
, st
);
2895 if (report_times_to_file
)
2898 const char *const *j
;
2900 fprintf (report_times_to_file
, "%g %g", ut
, st
);
2902 for (j
= &commands
[i
].prog
; *j
; j
= &commands
[i
].argv
[++c
])
2905 for (p
= *j
; *p
; ++p
)
2906 if (*p
== '"' || *p
== '\\' || *p
== '$'
2912 fprintf (report_times_to_file
, " \"");
2913 for (p
= *j
; *p
; ++p
)
2915 if (*p
== '"' || *p
== '\\' || *p
== '$')
2916 fputc ('\\', report_times_to_file
);
2917 fputc (*p
, report_times_to_file
);
2919 fputc ('"', report_times_to_file
);
2922 fprintf (report_times_to_file
, " %s", *j
);
2925 fputc ('\n', report_times_to_file
);
2935 /* Find all the switches given to us
2936 and make a vector describing them.
2937 The elements of the vector are strings, one per switch given.
2938 If a switch uses following arguments, then the `part1' field
2939 is the switch itself and the `args' field
2940 is a null-terminated vector containing the following arguments.
2941 Bits in the `live_cond' field are:
2942 SWITCH_LIVE to indicate this switch is true in a conditional spec.
2943 SWITCH_FALSE to indicate this switch is overridden by a later switch.
2944 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
2945 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
2946 in all do_spec calls afterwards. Used for %<S from self specs.
2947 The `validated' field is nonzero if any spec has looked at this switch;
2948 if it remains zero at the end of the run, it must be meaningless. */
2950 #define SWITCH_LIVE (1 << 0)
2951 #define SWITCH_FALSE (1 << 1)
2952 #define SWITCH_IGNORE (1 << 2)
2953 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
2954 #define SWITCH_KEEP_FOR_GCC (1 << 4)
2960 unsigned int live_cond
;
2966 static struct switchstr
*switches
;
2968 static int n_switches
;
2970 static int n_switches_alloc
;
2972 /* Set to zero if -fcompare-debug is disabled, positive if it's
2973 enabled and we're running the first compilation, negative if it's
2974 enabled and we're running the second compilation. For most of the
2975 time, it's in the range -1..1, but it can be temporarily set to 2
2976 or 3 to indicate that the -fcompare-debug flags didn't come from
2977 the command-line, but rather from the GCC_COMPARE_DEBUG environment
2978 variable, until a synthesized -fcompare-debug flag is added to the
2982 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
2983 int compare_debug_second
;
2985 /* Set to the flags that should be passed to the second compilation in
2986 a -fcompare-debug compilation. */
2987 const char *compare_debug_opt
;
2989 static struct switchstr
*switches_debug_check
[2];
2991 static int n_switches_debug_check
[2];
2993 static int n_switches_alloc_debug_check
[2];
2995 static char *debug_check_temp_file
[2];
2997 /* Language is one of three things:
2999 1) The name of a real programming language.
3000 2) NULL, indicating that no one has figured out
3002 3) '*', indicating that the file should be passed
3007 const char *language
;
3008 struct compiler
*incompiler
;
3013 /* Also a vector of input files specified. */
3015 static struct infile
*infiles
;
3019 static int n_infiles_alloc
;
3021 /* True if multiple input files are being compiled to a single
3024 static bool combine_inputs
;
3026 /* This counts the number of libraries added by lang_specific_driver, so that
3027 we can tell if there were any user supplied any files or libraries. */
3029 static int added_libraries
;
3031 /* And a vector of corresponding output files is made up later. */
3033 const char **outfiles
;
3035 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3037 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
3038 is true if we should look for an executable suffix. DO_OBJ
3039 is true if we should look for an object suffix. */
3042 convert_filename (const char *name
, int do_exe ATTRIBUTE_UNUSED
,
3043 int do_obj ATTRIBUTE_UNUSED
)
3045 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3053 len
= strlen (name
);
3055 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3056 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
3057 if (do_obj
&& len
> 2
3058 && name
[len
- 2] == '.'
3059 && name
[len
- 1] == 'o')
3061 obstack_grow (&obstack
, name
, len
- 2);
3062 obstack_grow0 (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
3063 name
= XOBFINISH (&obstack
, const char *);
3067 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3068 /* If there is no filetype, make it the executable suffix (which includes
3069 the "."). But don't get confused if we have just "-o". */
3070 if (! do_exe
|| TARGET_EXECUTABLE_SUFFIX
[0] == 0 || (len
== 2 && name
[0] == '-'))
3073 for (i
= len
- 1; i
>= 0; i
--)
3074 if (IS_DIR_SEPARATOR (name
[i
]))
3077 for (i
++; i
< len
; i
++)
3081 obstack_grow (&obstack
, name
, len
);
3082 obstack_grow0 (&obstack
, TARGET_EXECUTABLE_SUFFIX
,
3083 strlen (TARGET_EXECUTABLE_SUFFIX
));
3084 name
= XOBFINISH (&obstack
, const char *);
3091 /* Display the command line switches accepted by gcc. */
3095 printf (_("Usage: %s [options] file...\n"), progname
);
3096 fputs (_("Options:\n"), stdout
);
3098 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout
);
3099 fputs (_(" --help Display this information\n"), stdout
);
3100 fputs (_(" --target-help Display target specific command line options\n"), stdout
);
3101 fputs (_(" --help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumented}}[,...]\n"), stdout
);
3102 fputs (_(" Display specific types of command line options\n"), stdout
);
3104 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout
);
3105 fputs (_(" --version Display compiler version information\n"), stdout
);
3106 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout
);
3107 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout
);
3108 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout
);
3109 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout
);
3110 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout
);
3111 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout
);
3112 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout
);
3114 -print-multiarch Display the target's normalized GNU triplet, used as\n\
3115 a component in the library path\n"), stdout
);
3116 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout
);
3118 -print-multi-lib Display the mapping between command line options and\n\
3119 multiple library search directories\n"), stdout
);
3120 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout
);
3121 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout
);
3122 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout
);
3123 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout
);
3124 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout
);
3125 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout
);
3126 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout
);
3127 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout
);
3128 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout
);
3129 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout
);
3130 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout
);
3132 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
3133 prefixes to other gcc components\n"), stdout
);
3134 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout
);
3135 fputs (_(" -time Time the execution of each subprocess\n"), stdout
);
3136 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout
);
3137 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout
);
3139 --sysroot=<directory> Use <directory> as the root directory for headers\n\
3140 and libraries\n"), stdout
);
3141 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout
);
3142 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout
);
3143 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout
);
3144 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout
);
3145 fputs (_(" -S Compile only; do not assemble or link\n"), stdout
);
3146 fputs (_(" -c Compile and assemble, but do not link\n"), stdout
);
3147 fputs (_(" -o <file> Place the output into <file>\n"), stdout
);
3148 fputs (_(" -pie Create a position independent executable\n"), stdout
);
3149 fputs (_(" -shared Create a shared library\n"), stdout
);
3151 -x <language> Specify the language of the following input files\n\
3152 Permissible languages include: c c++ assembler none\n\
3153 'none' means revert to the default behavior of\n\
3154 guessing the language based on the file's extension\n\
3158 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3159 passed on to the various sub-processes invoked by %s. In order to pass\n\
3160 other options on to these processes the -W<letter> options must be used.\n\
3163 /* The rest of the options are displayed by invocations of the various
3168 add_preprocessor_option (const char *option
, int len
)
3170 preprocessor_options
.safe_push (save_string (option
, len
));
3174 add_assembler_option (const char *option
, int len
)
3176 assembler_options
.safe_push (save_string (option
, len
));
3180 add_linker_option (const char *option
, int len
)
3182 linker_options
.safe_push (save_string (option
, len
));
3185 /* Allocate space for an input file in infiles. */
3190 if (n_infiles_alloc
== 0)
3192 n_infiles_alloc
= 16;
3193 infiles
= XNEWVEC (struct infile
, n_infiles_alloc
);
3195 else if (n_infiles_alloc
== n_infiles
)
3197 n_infiles_alloc
*= 2;
3198 infiles
= XRESIZEVEC (struct infile
, infiles
, n_infiles_alloc
);
3202 /* Store an input file with the given NAME and LANGUAGE in
3206 add_infile (const char *name
, const char *language
)
3209 infiles
[n_infiles
].name
= name
;
3210 infiles
[n_infiles
++].language
= language
;
3213 /* Allocate space for a switch in switches. */
3218 if (n_switches_alloc
== 0)
3220 n_switches_alloc
= 16;
3221 switches
= XNEWVEC (struct switchstr
, n_switches_alloc
);
3223 else if (n_switches_alloc
== n_switches
)
3225 n_switches_alloc
*= 2;
3226 switches
= XRESIZEVEC (struct switchstr
, switches
, n_switches_alloc
);
3230 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3231 as validated if VALIDATED and KNOWN if it is an internal switch. */
3234 save_switch (const char *opt
, size_t n_args
, const char *const *args
,
3235 bool validated
, bool known
)
3238 switches
[n_switches
].part1
= opt
+ 1;
3240 switches
[n_switches
].args
= 0;
3243 switches
[n_switches
].args
= XNEWVEC (const char *, n_args
+ 1);
3244 memcpy (switches
[n_switches
].args
, args
, n_args
* sizeof (const char *));
3245 switches
[n_switches
].args
[n_args
] = NULL
;
3248 switches
[n_switches
].live_cond
= 0;
3249 switches
[n_switches
].validated
= validated
;
3250 switches
[n_switches
].known
= known
;
3251 switches
[n_switches
].ordering
= 0;
3255 /* Handle an option DECODED that is unknown to the option-processing
3259 driver_unknown_option_callback (const struct cl_decoded_option
*decoded
)
3261 const char *opt
= decoded
->arg
;
3262 if (opt
[1] == 'W' && opt
[2] == 'n' && opt
[3] == 'o' && opt
[4] == '-'
3263 && !(decoded
->errors
& CL_ERR_NEGATIVE
))
3265 /* Leave unknown -Wno-* options for the compiler proper, to be
3266 diagnosed only if there are warnings. */
3267 save_switch (decoded
->canonical_option
[0],
3268 decoded
->canonical_option_num_elements
- 1,
3269 &decoded
->canonical_option
[1], false, true);
3272 if (decoded
->opt_index
== OPT_SPECIAL_unknown
)
3274 /* Give it a chance to define it a a spec file. */
3275 save_switch (decoded
->canonical_option
[0],
3276 decoded
->canonical_option_num_elements
- 1,
3277 &decoded
->canonical_option
[1], false, false);
3284 /* Handle an option DECODED that is not marked as CL_DRIVER.
3285 LANG_MASK will always be CL_DRIVER. */
3288 driver_wrong_lang_callback (const struct cl_decoded_option
*decoded
,
3289 unsigned int lang_mask ATTRIBUTE_UNUSED
)
3291 /* At this point, non-driver options are accepted (and expected to
3292 be passed down by specs) unless marked to be rejected by the
3293 driver. Options to be rejected by the driver but accepted by the
3294 compilers proper are treated just like completely unknown
3296 const struct cl_option
*option
= &cl_options
[decoded
->opt_index
];
3298 if (option
->cl_reject_driver
)
3299 error ("unrecognized command line option %qs",
3300 decoded
->orig_option_with_args_text
);
3302 save_switch (decoded
->canonical_option
[0],
3303 decoded
->canonical_option_num_elements
- 1,
3304 &decoded
->canonical_option
[1], false, true);
3307 static const char *spec_lang
= 0;
3308 static int last_language_n_infiles
;
3310 /* Handle a driver option; arguments and return value as for
3314 driver_handle_option (struct gcc_options
*opts
,
3315 struct gcc_options
*opts_set
,
3316 const struct cl_decoded_option
*decoded
,
3317 unsigned int lang_mask ATTRIBUTE_UNUSED
, int kind
,
3319 const struct cl_option_handlers
*handlers ATTRIBUTE_UNUSED
,
3320 diagnostic_context
*dc
)
3322 size_t opt_index
= decoded
->opt_index
;
3323 const char *arg
= decoded
->arg
;
3324 const char *compare_debug_replacement_opt
;
3325 int value
= decoded
->value
;
3326 bool validated
= false;
3327 bool do_save
= true;
3329 gcc_assert (opts
== &global_options
);
3330 gcc_assert (opts_set
== &global_options_set
);
3331 gcc_assert (kind
== DK_UNSPECIFIED
);
3332 gcc_assert (loc
== UNKNOWN_LOCATION
);
3333 gcc_assert (dc
== global_dc
);
3339 struct spec_list
*sl
;
3341 for (sl
= specs
; sl
; sl
= sl
->next
)
3342 printf ("*%s:\n%s\n\n", sl
->name
, *(sl
->ptr_spec
));
3343 if (link_command_spec
)
3344 printf ("*link_command:\n%s\n\n", link_command_spec
);
3348 case OPT_dumpversion
:
3349 printf ("%s\n", spec_version
);
3352 case OPT_dumpmachine
:
3353 printf ("%s\n", spec_machine
);
3359 /* CPP driver cannot obtain switch from cc1_options. */
3361 add_preprocessor_option ("--version", strlen ("--version"));
3362 add_assembler_option ("--version", strlen ("--version"));
3363 add_linker_option ("--version", strlen ("--version"));
3367 print_help_list
= 1;
3369 /* CPP driver cannot obtain switch from cc1_options. */
3371 add_preprocessor_option ("--help", 6);
3372 add_assembler_option ("--help", 6);
3373 add_linker_option ("--help", 6);
3377 print_subprocess_help
= 2;
3380 case OPT__target_help
:
3381 print_subprocess_help
= 1;
3383 /* CPP driver cannot obtain switch from cc1_options. */
3385 add_preprocessor_option ("--target-help", 13);
3386 add_assembler_option ("--target-help", 13);
3387 add_linker_option ("--target-help", 13);
3390 case OPT__no_sysroot_suffix
:
3391 case OPT_pass_exit_codes
:
3392 case OPT_print_search_dirs
:
3393 case OPT_print_file_name_
:
3394 case OPT_print_prog_name_
:
3395 case OPT_print_multi_lib
:
3396 case OPT_print_multi_directory
:
3397 case OPT_print_sysroot
:
3398 case OPT_print_multi_os_directory
:
3399 case OPT_print_multiarch
:
3400 case OPT_print_sysroot_headers_suffix
:
3403 /* These options set the variables specified in common.opt
3404 automatically, and do not need to be saved for spec
3409 case OPT_print_libgcc_file_name
:
3410 print_file_name
= "libgcc.a";
3414 case OPT_fuse_ld_bfd
:
3418 case OPT_fuse_ld_gold
:
3422 case OPT_fcompare_debug_second
:
3423 compare_debug_second
= 1;
3426 case OPT_fcompare_debug
:
3430 compare_debug_replacement_opt
= "-fcompare-debug=";
3432 goto compare_debug_with_arg
;
3435 compare_debug_replacement_opt
= "-fcompare-debug=-gtoggle";
3437 goto compare_debug_with_arg
;
3444 case OPT_fcompare_debug_
:
3445 compare_debug_replacement_opt
= decoded
->canonical_option
[0];
3446 compare_debug_with_arg
:
3447 gcc_assert (decoded
->canonical_option_num_elements
== 1);
3448 gcc_assert (arg
!= NULL
);
3453 if (compare_debug
< 0)
3454 compare_debug_opt
= NULL
;
3456 compare_debug_opt
= arg
;
3457 save_switch (compare_debug_replacement_opt
, 0, NULL
, validated
, true);
3463 /* Pass the rest of this option to the assembler. */
3465 /* Split the argument at commas. */
3467 for (j
= 0; arg
[j
]; j
++)
3470 add_assembler_option (arg
+ prev
, j
- prev
);
3474 /* Record the part after the last comma. */
3475 add_assembler_option (arg
+ prev
, j
- prev
);
3483 /* Pass the rest of this option to the preprocessor. */
3485 /* Split the argument at commas. */
3487 for (j
= 0; arg
[j
]; j
++)
3490 add_preprocessor_option (arg
+ prev
, j
- prev
);
3494 /* Record the part after the last comma. */
3495 add_preprocessor_option (arg
+ prev
, j
- prev
);
3503 /* Split the argument at commas. */
3505 for (j
= 0; arg
[j
]; j
++)
3508 add_infile (save_string (arg
+ prev
, j
- prev
), "*");
3511 /* Record the part after the last comma. */
3512 add_infile (arg
+ prev
, "*");
3518 add_infile (arg
, "*");
3522 case OPT_Xpreprocessor
:
3523 add_preprocessor_option (arg
, strlen (arg
));
3527 case OPT_Xassembler
:
3528 add_assembler_option (arg
, strlen (arg
));
3533 /* POSIX allows separation of -l and the lib arg; canonicalize
3534 by concatenating -l with its arg */
3535 add_infile (concat ("-l", arg
, NULL
), "*");
3540 /* Similarly, canonicalize -L for linkers that may not accept
3541 separate arguments. */
3542 save_switch (concat ("-L", arg
, NULL
), 0, NULL
, validated
, true);
3547 save_switch (concat ("-F", arg
, NULL
), 0, NULL
, validated
, true);
3550 case OPT_save_temps
:
3551 save_temps_flag
= SAVE_TEMPS_CWD
;
3555 case OPT_save_temps_
:
3556 if (strcmp (arg
, "cwd") == 0)
3557 save_temps_flag
= SAVE_TEMPS_CWD
;
3558 else if (strcmp (arg
, "obj") == 0
3559 || strcmp (arg
, "object") == 0)
3560 save_temps_flag
= SAVE_TEMPS_OBJ
;
3562 fatal_error ("%qs is an unknown -save-temps option",
3563 decoded
->orig_option_with_args_text
);
3566 case OPT_no_canonical_prefixes
:
3567 /* Already handled as a special case, so ignored here. */
3573 /* These options set the variables specified in common.opt
3574 automatically, but do need to be saved for spec
3580 struct user_specs
*user
= XNEW (struct user_specs
);
3582 user
->next
= (struct user_specs
*) 0;
3583 user
->filename
= arg
;
3584 if (user_specs_tail
)
3585 user_specs_tail
->next
= user
;
3587 user_specs_head
= user
;
3588 user_specs_tail
= user
;
3594 target_system_root
= arg
;
3595 target_system_root_changed
= 1;
3600 if (report_times_to_file
)
3601 fclose (report_times_to_file
);
3602 report_times_to_file
= fopen (arg
, "a");
3608 This is similar to -v except that there is no execution
3609 of the commands and the echoed arguments are quoted. It
3610 is intended for use in shell scripts to capture the
3611 driver-generated command line. */
3612 verbose_only_flag
++;
3619 size_t len
= strlen (arg
);
3621 /* Catch the case where the user has forgotten to append a
3622 directory separator to the path. Note, they may be using
3623 -B to add an executable name prefix, eg "i386-elf-", in
3624 order to distinguish between multiple installations of
3625 GCC in the same directory. Hence we must check to see
3626 if appending a directory separator actually makes a
3627 valid directory name. */
3628 if (!IS_DIR_SEPARATOR (arg
[len
- 1])
3629 && is_directory (arg
, false))
3631 char *tmp
= XNEWVEC (char, len
+ 2);
3633 tmp
[len
] = DIR_SEPARATOR
;
3638 add_prefix (&exec_prefixes
, arg
, NULL
,
3639 PREFIX_PRIORITY_B_OPT
, 0, 0);
3640 add_prefix (&startfile_prefixes
, arg
, NULL
,
3641 PREFIX_PRIORITY_B_OPT
, 0, 0);
3642 add_prefix (&include_prefixes
, arg
, NULL
,
3643 PREFIX_PRIORITY_B_OPT
, 0, 0);
3650 if (!strcmp (spec_lang
, "none"))
3651 /* Suppress the warning if -xnone comes after the last input
3652 file, because alternate command interfaces like g++ might
3653 find it useful to place -xnone after each input file. */
3656 last_language_n_infiles
= n_infiles
;
3662 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3663 arg
= convert_filename (arg
, ! have_c
, 0);
3665 /* Save the output name in case -save-temps=obj was used. */
3666 save_temps_prefix
= xstrdup (arg
);
3667 /* On some systems, ld cannot handle "-o" without a space. So
3668 split the option from its argument. */
3669 save_switch ("-o", 1, &arg
, validated
, true);
3672 case OPT_static_libgcc
:
3673 case OPT_shared_libgcc
:
3674 case OPT_static_libgfortran
:
3675 case OPT_static_libstdc__
:
3676 /* These are always valid, since gcc.c itself understands the
3677 first two, gfortranspec.c understands -static-libgfortran and
3678 g++spec.c understands -static-libstdc++ */
3687 /* Various driver options need no special processing at this
3688 point, having been handled in a prescan above or being
3689 handled by specs. */
3694 save_switch (decoded
->canonical_option
[0],
3695 decoded
->canonical_option_num_elements
- 1,
3696 &decoded
->canonical_option
[1], validated
, true);
3700 /* Put the driver's standard set of option handlers in *HANDLERS. */
3703 set_option_handlers (struct cl_option_handlers
*handlers
)
3705 handlers
->unknown_option_callback
= driver_unknown_option_callback
;
3706 handlers
->wrong_lang_callback
= driver_wrong_lang_callback
;
3707 handlers
->num_handlers
= 3;
3708 handlers
->handlers
[0].handler
= driver_handle_option
;
3709 handlers
->handlers
[0].mask
= CL_DRIVER
;
3710 handlers
->handlers
[1].handler
= common_handle_option
;
3711 handlers
->handlers
[1].mask
= CL_COMMON
;
3712 handlers
->handlers
[2].handler
= target_handle_option
;
3713 handlers
->handlers
[2].mask
= CL_TARGET
;
3716 /* Create the vector `switches' and its contents.
3717 Store its length in `n_switches'. */
3720 process_command (unsigned int decoded_options_count
,
3721 struct cl_decoded_option
*decoded_options
)
3725 char *tooldir_prefix
, *tooldir_prefix2
;
3726 char *(*get_relative_prefix
) (const char *, const char *,
3727 const char *) = NULL
;
3728 struct cl_option_handlers handlers
;
3731 gcc_exec_prefix
= getenv ("GCC_EXEC_PREFIX");
3735 added_libraries
= 0;
3737 /* Figure compiler version from version string. */
3739 compiler_version
= temp1
= xstrdup (version_string
);
3741 for (; *temp1
; ++temp1
)
3750 /* Handle any -no-canonical-prefixes flag early, to assign the function
3751 that builds relative prefixes. This function creates default search
3752 paths that are needed later in normal option handling. */
3754 for (j
= 1; j
< decoded_options_count
; j
++)
3756 if (decoded_options
[j
].opt_index
== OPT_no_canonical_prefixes
)
3758 get_relative_prefix
= make_relative_prefix_ignore_links
;
3762 if (! get_relative_prefix
)
3763 get_relative_prefix
= make_relative_prefix
;
3765 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3766 see if we can create it from the pathname specified in
3767 decoded_options[0].arg. */
3769 gcc_libexec_prefix
= standard_libexec_prefix
;
3771 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3772 if (!gcc_exec_prefix
)
3774 gcc_exec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3775 standard_bindir_prefix
,
3776 standard_exec_prefix
);
3777 gcc_libexec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3778 standard_bindir_prefix
,
3779 standard_libexec_prefix
);
3780 if (gcc_exec_prefix
)
3781 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix
, NULL
));
3785 /* make_relative_prefix requires a program name, but
3786 GCC_EXEC_PREFIX is typically a directory name with a trailing
3787 / (which is ignored by make_relative_prefix), so append a
3789 char *tmp_prefix
= concat (gcc_exec_prefix
, "gcc", NULL
);
3790 gcc_libexec_prefix
= get_relative_prefix (tmp_prefix
,
3791 standard_exec_prefix
,
3792 standard_libexec_prefix
);
3794 /* The path is unrelocated, so fallback to the original setting. */
3795 if (!gcc_libexec_prefix
)
3796 gcc_libexec_prefix
= standard_libexec_prefix
;
3802 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3803 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3804 or an automatically created GCC_EXEC_PREFIX from
3805 decoded_options[0].arg. */
3807 /* Do language-specific adjustment/addition of flags. */
3808 lang_specific_driver (&decoded_options
, &decoded_options_count
,
3811 if (gcc_exec_prefix
)
3813 int len
= strlen (gcc_exec_prefix
);
3815 if (len
> (int) sizeof ("/lib/gcc/") - 1
3816 && (IS_DIR_SEPARATOR (gcc_exec_prefix
[len
-1])))
3818 temp
= gcc_exec_prefix
+ len
- sizeof ("/lib/gcc/") + 1;
3819 if (IS_DIR_SEPARATOR (*temp
)
3820 && filename_ncmp (temp
+ 1, "lib", 3) == 0
3821 && IS_DIR_SEPARATOR (temp
[4])
3822 && filename_ncmp (temp
+ 5, "gcc", 3) == 0)
3823 len
-= sizeof ("/lib/gcc/") - 1;
3826 set_std_prefix (gcc_exec_prefix
, len
);
3827 add_prefix (&exec_prefixes
, gcc_libexec_prefix
, "GCC",
3828 PREFIX_PRIORITY_LAST
, 0, 0);
3829 add_prefix (&startfile_prefixes
, gcc_exec_prefix
, "GCC",
3830 PREFIX_PRIORITY_LAST
, 0, 0);
3833 /* COMPILER_PATH and LIBRARY_PATH have values
3834 that are lists of directory names with colons. */
3836 temp
= getenv ("COMPILER_PATH");
3839 const char *startp
, *endp
;
3840 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3842 startp
= endp
= temp
;
3845 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3847 strncpy (nstore
, startp
, endp
- startp
);
3849 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3850 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3852 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3853 nstore
[endp
- startp
+ 1] = 0;
3856 nstore
[endp
- startp
] = 0;
3857 add_prefix (&exec_prefixes
, nstore
, 0,
3858 PREFIX_PRIORITY_LAST
, 0, 0);
3859 add_prefix (&include_prefixes
, nstore
, 0,
3860 PREFIX_PRIORITY_LAST
, 0, 0);
3863 endp
= startp
= endp
+ 1;
3870 temp
= getenv (LIBRARY_PATH_ENV
);
3871 if (temp
&& *cross_compile
== '0')
3873 const char *startp
, *endp
;
3874 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3876 startp
= endp
= temp
;
3879 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3881 strncpy (nstore
, startp
, endp
- startp
);
3883 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3884 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3886 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3887 nstore
[endp
- startp
+ 1] = 0;
3890 nstore
[endp
- startp
] = 0;
3891 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3892 PREFIX_PRIORITY_LAST
, 0, 1);
3895 endp
= startp
= endp
+ 1;
3902 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3903 temp
= getenv ("LPATH");
3904 if (temp
&& *cross_compile
== '0')
3906 const char *startp
, *endp
;
3907 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3909 startp
= endp
= temp
;
3912 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3914 strncpy (nstore
, startp
, endp
- startp
);
3916 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3917 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3919 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3920 nstore
[endp
- startp
+ 1] = 0;
3923 nstore
[endp
- startp
] = 0;
3924 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3925 PREFIX_PRIORITY_LAST
, 0, 1);
3928 endp
= startp
= endp
+ 1;
3935 /* Process the options and store input files and switches in their
3938 last_language_n_infiles
= -1;
3940 set_option_handlers (&handlers
);
3942 for (j
= 1; j
< decoded_options_count
; j
++)
3944 switch (decoded_options
[j
].opt_index
)
3956 for (j
= 1; j
< decoded_options_count
; j
++)
3958 if (decoded_options
[j
].opt_index
== OPT_SPECIAL_input_file
)
3960 const char *arg
= decoded_options
[j
].arg
;
3961 const char *p
= strrchr (arg
, '@');
3965 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3966 arg
= convert_filename (arg
, 0, access (arg
, F_OK
));
3968 /* For LTO static archive support we handle input file
3969 specifications that are composed of a filename and
3970 an offset like FNAME@OFFSET. */
3973 && sscanf (p
, "@%li%n", &offset
, &consumed
) >= 1
3974 && strlen (p
) == (unsigned int)consumed
)
3976 fname
= (char *)xmalloc (p
- arg
+ 1);
3977 memcpy (fname
, arg
, p
- arg
);
3978 fname
[p
- arg
] = '\0';
3979 /* Only accept non-stdin and existing FNAME parts, otherwise
3980 try with the full name. */
3981 if (strcmp (fname
, "-") == 0 || access (fname
, F_OK
) < 0)
3984 fname
= xstrdup (arg
);
3988 fname
= xstrdup (arg
);
3990 if (strcmp (fname
, "-") != 0 && access (fname
, F_OK
) < 0)
3991 perror_with_name (fname
);
3993 add_infile (arg
, spec_lang
);
3999 read_cmdline_option (&global_options
, &global_options_set
,
4000 decoded_options
+ j
, UNKNOWN_LOCATION
,
4001 CL_DRIVER
, &handlers
, global_dc
);
4004 /* If -save-temps=obj and -o name, create the prefix to use for %b.
4005 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
4006 if (save_temps_flag
== SAVE_TEMPS_OBJ
&& save_temps_prefix
!= NULL
)
4008 save_temps_length
= strlen (save_temps_prefix
);
4009 temp
= strrchr (lbasename (save_temps_prefix
), '.');
4012 save_temps_length
-= strlen (temp
);
4013 save_temps_prefix
[save_temps_length
] = '\0';
4017 else if (save_temps_prefix
!= NULL
)
4019 free (save_temps_prefix
);
4020 save_temps_prefix
= NULL
;
4023 if (save_temps_flag
&& use_pipes
)
4025 /* -save-temps overrides -pipe, so that temp files are produced */
4026 if (save_temps_flag
)
4027 warning (0, "-pipe ignored because -save-temps specified");
4033 const char *gcd
= getenv ("GCC_COMPARE_DEBUG");
4035 if (gcd
&& gcd
[0] == '-')
4038 compare_debug_opt
= gcd
;
4040 else if (gcd
&& *gcd
&& strcmp (gcd
, "0"))
4043 compare_debug_opt
= "-gtoggle";
4046 else if (compare_debug
< 0)
4049 gcc_assert (!compare_debug_opt
);
4052 /* Set up the search paths. We add directories that we expect to
4053 contain GNU Toolchain components before directories specified by
4054 the machine description so that we will find GNU components (like
4055 the GNU assembler) before those of the host system. */
4057 /* If we don't know where the toolchain has been installed, use the
4058 configured-in locations. */
4059 if (!gcc_exec_prefix
)
4062 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "GCC",
4063 PREFIX_PRIORITY_LAST
, 1, 0);
4064 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "BINUTILS",
4065 PREFIX_PRIORITY_LAST
, 2, 0);
4066 add_prefix (&exec_prefixes
, standard_exec_prefix
, "BINUTILS",
4067 PREFIX_PRIORITY_LAST
, 2, 0);
4069 add_prefix (&startfile_prefixes
, standard_exec_prefix
, "BINUTILS",
4070 PREFIX_PRIORITY_LAST
, 1, 0);
4073 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix
));
4074 tooldir_prefix2
= concat (tooldir_base_prefix
, spec_machine
,
4075 dir_separator_str
, NULL
);
4077 /* Look for tools relative to the location from which the driver is
4078 running, or, if that is not available, the configured prefix. */
4080 = concat (gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
4081 spec_machine
, dir_separator_str
,
4082 spec_version
, dir_separator_str
, tooldir_prefix2
, NULL
);
4083 free (tooldir_prefix2
);
4085 add_prefix (&exec_prefixes
,
4086 concat (tooldir_prefix
, "bin", dir_separator_str
, NULL
),
4087 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 0);
4088 add_prefix (&startfile_prefixes
,
4089 concat (tooldir_prefix
, "lib", dir_separator_str
, NULL
),
4090 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 1);
4091 free (tooldir_prefix
);
4093 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
4094 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
4095 then consider it to relocate with the rest of the GCC installation
4096 if GCC_EXEC_PREFIX is set.
4097 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
4098 if (target_system_root
&& !target_system_root_changed
&& gcc_exec_prefix
)
4100 char *tmp_prefix
= get_relative_prefix (decoded_options
[0].arg
,
4101 standard_bindir_prefix
,
4102 target_system_root
);
4103 if (tmp_prefix
&& access_check (tmp_prefix
, F_OK
) == 0)
4105 target_system_root
= tmp_prefix
;
4106 target_system_root_changed
= 1;
4111 /* More prefixes are enabled in main, after we read the specs file
4112 and determine whether this is cross-compilation or not. */
4114 if (n_infiles
== last_language_n_infiles
&& spec_lang
!= 0)
4115 warning (0, "%<-x %s%> after last input file has no effect", spec_lang
);
4117 /* Synthesize -fcompare-debug flag from the GCC_COMPARE_DEBUG
4118 environment variable. */
4119 if (compare_debug
== 2 || compare_debug
== 3)
4121 const char *opt
= concat ("-fcompare-debug=", compare_debug_opt
, NULL
);
4122 save_switch (opt
, 0, NULL
, false, true);
4126 /* Ensure we only invoke each subprocess once. */
4127 if (print_subprocess_help
|| print_help_list
|| print_version
)
4131 /* Create a dummy input file, so that we can pass
4132 the help option on to the various sub-processes. */
4133 add_infile ("help-dummy", "c");
4137 switches
[n_switches
].part1
= 0;
4139 infiles
[n_infiles
].name
= 0;
4142 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4143 and place that in the environment. */
4146 set_collect_gcc_options (void)
4151 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4153 obstack_grow (&collect_obstack
, "COLLECT_GCC_OPTIONS=",
4154 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4157 for (i
= 0; (int) i
< n_switches
; i
++)
4159 const char *const *args
;
4162 obstack_grow (&collect_obstack
, " ", 1);
4166 /* Ignore elided switches. */
4167 if ((switches
[i
].live_cond
4168 & (SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
))
4172 obstack_grow (&collect_obstack
, "'-", 2);
4173 q
= switches
[i
].part1
;
4174 while ((p
= strchr (q
, '\'')))
4176 obstack_grow (&collect_obstack
, q
, p
- q
);
4177 obstack_grow (&collect_obstack
, "'\\''", 4);
4180 obstack_grow (&collect_obstack
, q
, strlen (q
));
4181 obstack_grow (&collect_obstack
, "'", 1);
4183 for (args
= switches
[i
].args
; args
&& *args
; args
++)
4185 obstack_grow (&collect_obstack
, " '", 2);
4187 while ((p
= strchr (q
, '\'')))
4189 obstack_grow (&collect_obstack
, q
, p
- q
);
4190 obstack_grow (&collect_obstack
, "'\\''", 4);
4193 obstack_grow (&collect_obstack
, q
, strlen (q
));
4194 obstack_grow (&collect_obstack
, "'", 1);
4197 obstack_grow (&collect_obstack
, "\0", 1);
4198 xputenv (XOBFINISH (&collect_obstack
, char *));
4201 /* Process a spec string, accumulating and running commands. */
4203 /* These variables describe the input file name.
4204 input_file_number is the index on outfiles of this file,
4205 so that the output file name can be stored for later use by %o.
4206 input_basename is the start of the part of the input file
4207 sans all directory names, and basename_length is the number
4208 of characters starting there excluding the suffix .c or whatever. */
4210 static const char *gcc_input_filename
;
4211 static int input_file_number
;
4212 size_t input_filename_length
;
4213 static int basename_length
;
4214 static int suffixed_basename_length
;
4215 static const char *input_basename
;
4216 static const char *input_suffix
;
4217 #ifndef HOST_LACKS_INODE_NUMBERS
4218 static struct stat input_stat
;
4220 static int input_stat_set
;
4222 /* The compiler used to process the current input file. */
4223 static struct compiler
*input_file_compiler
;
4225 /* These are variables used within do_spec and do_spec_1. */
4227 /* Nonzero if an arg has been started and not yet terminated
4228 (with space, tab or newline). */
4229 static int arg_going
;
4231 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4232 is a temporary file name. */
4233 static int delete_this_arg
;
4235 /* Nonzero means %w has been seen; the next arg to be terminated
4236 is the output file name of this compilation. */
4237 static int this_is_output_file
;
4239 /* Nonzero means %s has been seen; the next arg to be terminated
4240 is the name of a library file and we should try the standard
4241 search dirs for it. */
4242 static int this_is_library_file
;
4244 /* Nonzero means %T has been seen; the next arg to be terminated
4245 is the name of a linker script and we should try all of the
4246 standard search dirs for it. If it is found insert a --script
4247 command line switch and then substitute the full path in place,
4248 otherwise generate an error message. */
4249 static int this_is_linker_script
;
4251 /* Nonzero means that the input of this command is coming from a pipe. */
4252 static int input_from_pipe
;
4254 /* Nonnull means substitute this for any suffix when outputting a switches
4256 static const char *suffix_subst
;
4258 /* If there is an argument being accumulated, terminate it and store it. */
4261 end_going_arg (void)
4267 obstack_1grow (&obstack
, 0);
4268 string
= XOBFINISH (&obstack
, const char *);
4269 if (this_is_library_file
)
4270 string
= find_file (string
);
4271 if (this_is_linker_script
)
4273 char * full_script_path
= find_a_file (&startfile_prefixes
, string
, R_OK
, true);
4275 if (full_script_path
== NULL
)
4277 error ("unable to locate default linker script %qs in the library search paths", string
);
4278 /* Script was not found on search path. */
4281 store_arg ("--script", false, false);
4282 string
= full_script_path
;
4284 store_arg (string
, delete_this_arg
, this_is_output_file
);
4285 if (this_is_output_file
)
4286 outfiles
[input_file_number
] = string
;
4292 /* Parse the WRAPPER string which is a comma separated list of the command line
4293 and insert them into the beginning of argbuf. */
4296 insert_wrapper (const char *wrapper
)
4300 char *buf
= xstrdup (wrapper
);
4302 unsigned int old_length
= argbuf
.length ();
4310 while ((p
= strchr (p
, ',')) != NULL
);
4312 argbuf
.safe_grow (old_length
+ n
);
4313 memmove (argbuf
.address () + n
,
4315 old_length
* sizeof (const_char_p
));
4329 while ((p
= strchr (p
, ',')) != NULL
);
4330 gcc_assert (i
== n
);
4333 /* Process the spec SPEC and run the commands specified therein.
4334 Returns 0 if the spec is successfully processed; -1 if failed. */
4337 do_spec (const char *spec
)
4341 value
= do_spec_2 (spec
);
4343 /* Force out any unfinished command.
4344 If -pipe, this forces out the last command if it ended in `|'. */
4347 if (argbuf
.length () > 0
4348 && !strcmp (argbuf
.last (), "|"))
4351 set_collect_gcc_options ();
4353 if (argbuf
.length () > 0)
4361 do_spec_2 (const char *spec
)
4367 delete_this_arg
= 0;
4368 this_is_output_file
= 0;
4369 this_is_library_file
= 0;
4370 this_is_linker_script
= 0;
4371 input_from_pipe
= 0;
4372 suffix_subst
= NULL
;
4374 result
= do_spec_1 (spec
, 0, NULL
);
4382 /* Process the given spec string and add any new options to the end
4383 of the switches/n_switches array. */
4386 do_option_spec (const char *name
, const char *spec
)
4388 unsigned int i
, value_count
, value_len
;
4389 const char *p
, *q
, *value
;
4390 char *tmp_spec
, *tmp_spec_p
;
4392 if (configure_default_options
[0].name
== NULL
)
4395 for (i
= 0; i
< ARRAY_SIZE (configure_default_options
); i
++)
4396 if (strcmp (configure_default_options
[i
].name
, name
) == 0)
4398 if (i
== ARRAY_SIZE (configure_default_options
))
4401 value
= configure_default_options
[i
].value
;
4402 value_len
= strlen (value
);
4404 /* Compute the size of the final spec. */
4407 while ((p
= strstr (p
, "%(VALUE)")) != NULL
)
4413 /* Replace each %(VALUE) by the specified value. */
4414 tmp_spec
= (char *) alloca (strlen (spec
) + 1
4415 + value_count
* (value_len
- strlen ("%(VALUE)")));
4416 tmp_spec_p
= tmp_spec
;
4418 while ((p
= strstr (q
, "%(VALUE)")) != NULL
)
4420 memcpy (tmp_spec_p
, q
, p
- q
);
4421 tmp_spec_p
= tmp_spec_p
+ (p
- q
);
4422 memcpy (tmp_spec_p
, value
, value_len
);
4423 tmp_spec_p
+= value_len
;
4424 q
= p
+ strlen ("%(VALUE)");
4426 strcpy (tmp_spec_p
, q
);
4428 do_self_spec (tmp_spec
);
4431 /* Process the given spec string and add any new options to the end
4432 of the switches/n_switches array. */
4435 do_self_spec (const char *spec
)
4440 do_spec_1 (" ", 0, NULL
);
4442 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4443 do_self_specs adds the replacements to switches array, so it shouldn't
4444 be processed afterwards. */
4445 for (i
= 0; i
< n_switches
; i
++)
4446 if ((switches
[i
].live_cond
& SWITCH_IGNORE
))
4447 switches
[i
].live_cond
|= SWITCH_IGNORE_PERMANENTLY
;
4449 if (argbuf
.length () > 0)
4451 const char **argbuf_copy
;
4452 struct cl_decoded_option
*decoded_options
;
4453 struct cl_option_handlers handlers
;
4454 unsigned int decoded_options_count
;
4457 /* Create a copy of argbuf with a dummy argv[0] entry for
4458 decode_cmdline_options_to_array. */
4459 argbuf_copy
= XNEWVEC (const char *,
4460 argbuf
.length () + 1);
4461 argbuf_copy
[0] = "";
4462 memcpy (argbuf_copy
+ 1, argbuf
.address (),
4463 argbuf
.length () * sizeof (const char *));
4465 decode_cmdline_options_to_array (argbuf
.length () + 1,
4467 CL_DRIVER
, &decoded_options
,
4468 &decoded_options_count
);
4471 set_option_handlers (&handlers
);
4473 for (j
= 1; j
< decoded_options_count
; j
++)
4475 switch (decoded_options
[j
].opt_index
)
4477 case OPT_SPECIAL_input_file
:
4478 /* Specs should only generate options, not input
4480 if (strcmp (decoded_options
[j
].arg
, "-") != 0)
4481 fatal_error ("switch %qs does not start with %<-%>",
4482 decoded_options
[j
].arg
);
4484 fatal_error ("spec-generated switch is just %<-%>");
4487 case OPT_fcompare_debug_second
:
4488 case OPT_fcompare_debug
:
4489 case OPT_fcompare_debug_
:
4491 /* Avoid duplicate processing of some options from
4492 compare-debug specs; just save them here. */
4493 save_switch (decoded_options
[j
].canonical_option
[0],
4494 (decoded_options
[j
].canonical_option_num_elements
4496 &decoded_options
[j
].canonical_option
[1], false, true);
4500 read_cmdline_option (&global_options
, &global_options_set
,
4501 decoded_options
+ j
, UNKNOWN_LOCATION
,
4502 CL_DRIVER
, &handlers
, global_dc
);
4508 switches
[n_switches
].part1
= 0;
4512 /* Callback for processing %D and %I specs. */
4514 struct spec_path_info
{
4519 bool separate_options
;
4523 spec_path (char *path
, void *data
)
4525 struct spec_path_info
*info
= (struct spec_path_info
*) data
;
4529 if (info
->omit_relative
&& !IS_ABSOLUTE_PATH (path
))
4532 if (info
->append_len
!= 0)
4534 len
= strlen (path
);
4535 memcpy (path
+ len
, info
->append
, info
->append_len
+ 1);
4538 if (!is_directory (path
, true))
4541 do_spec_1 (info
->option
, 1, NULL
);
4542 if (info
->separate_options
)
4543 do_spec_1 (" ", 0, NULL
);
4545 if (info
->append_len
== 0)
4547 len
= strlen (path
);
4548 save
= path
[len
- 1];
4549 if (IS_DIR_SEPARATOR (path
[len
- 1]))
4550 path
[len
- 1] = '\0';
4553 do_spec_1 (path
, 1, NULL
);
4554 do_spec_1 (" ", 0, NULL
);
4556 /* Must not damage the original path. */
4557 if (info
->append_len
== 0)
4558 path
[len
- 1] = save
;
4563 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4567 create_at_file (char **argv
)
4569 char *temp_file
= make_temp_file ("");
4570 char *at_argument
= concat ("@", temp_file
, NULL
);
4571 FILE *f
= fopen (temp_file
, "w");
4575 fatal_error ("could not open temporary response file %s",
4578 status
= writeargv (argv
, f
);
4581 fatal_error ("could not write to temporary response file %s",
4584 status
= fclose (f
);
4587 fatal_error ("could not close temporary response file %s",
4590 store_arg (at_argument
, 0, 0);
4592 record_temp_file (temp_file
, !save_temps_flag
, !save_temps_flag
);
4595 /* True if we should compile INFILE. */
4598 compile_input_file_p (struct infile
*infile
)
4600 if ((!infile
->language
) || (infile
->language
[0] != '*'))
4601 if (infile
->incompiler
== input_file_compiler
)
4606 /* Process each member of VEC as a spec. */
4609 do_specs_vec (vec
<char_p
> vec
)
4614 FOR_EACH_VEC_ELT (vec
, ix
, opt
)
4616 do_spec_1 (opt
, 1, NULL
);
4617 /* Make each accumulated option a separate argument. */
4618 do_spec_1 (" ", 0, NULL
);
4622 /* Process the sub-spec SPEC as a portion of a larger spec.
4623 This is like processing a whole spec except that we do
4624 not initialize at the beginning and we do not supply a
4625 newline by default at the end.
4626 INSWITCH nonzero means don't process %-sequences in SPEC;
4627 in this case, % is treated as an ordinary character.
4628 This is used while substituting switches.
4629 INSWITCH nonzero also causes SPC not to terminate an argument.
4631 Value is zero unless a line was finished
4632 and the command on that line reported an error. */
4635 do_spec_1 (const char *spec
, int inswitch
, const char *soft_matched_part
)
4637 const char *p
= spec
;
4642 /* If it's an empty string argument to a switch, keep it as is. */
4643 if (inswitch
&& !*p
)
4647 /* If substituting a switch, treat all chars like letters.
4648 Otherwise, NL, SPC, TAB and % are special. */
4649 switch (inswitch
? 'a' : c
)
4654 if (argbuf
.length () > 0
4655 && !strcmp (argbuf
.last (), "|"))
4657 /* A `|' before the newline means use a pipe here,
4658 but only if -pipe was specified.
4659 Otherwise, execute now and don't pass the `|' as an arg. */
4662 input_from_pipe
= 1;
4669 set_collect_gcc_options ();
4671 if (argbuf
.length () > 0)
4677 /* Reinitialize for a new command, and for a new argument. */
4680 delete_this_arg
= 0;
4681 this_is_output_file
= 0;
4682 this_is_library_file
= 0;
4683 this_is_linker_script
= 0;
4684 input_from_pipe
= 0;
4691 obstack_1grow (&obstack
, c
);
4699 /* Reinitialize for a new argument. */
4700 delete_this_arg
= 0;
4701 this_is_output_file
= 0;
4702 this_is_library_file
= 0;
4703 this_is_linker_script
= 0;
4710 fatal_error ("spec %qs invalid", spec
);
4713 if (save_temps_length
)
4714 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4716 obstack_grow (&obstack
, input_basename
, basename_length
);
4717 if (compare_debug
< 0)
4718 obstack_grow (&obstack
, ".gk", 3);
4723 if (save_temps_length
)
4724 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4726 obstack_grow (&obstack
, input_basename
, suffixed_basename_length
);
4727 if (compare_debug
< 0)
4728 obstack_grow (&obstack
, ".gk", 3);
4733 delete_this_arg
= 2;
4736 /* Dump out the directories specified with LIBRARY_PATH,
4737 followed by the absolute directories
4738 that we search for startfiles. */
4741 struct spec_path_info info
;
4744 info
.append_len
= 0;
4745 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4746 /* Used on systems which record the specified -L dirs
4747 and use them to search for dynamic linking.
4748 Relative directories always come from -B,
4749 and it is better not to use them for searching
4750 at run time. In particular, stage1 loses. */
4751 info
.omit_relative
= true;
4753 info
.omit_relative
= false;
4755 info
.separate_options
= false;
4757 for_each_path (&startfile_prefixes
, true, 0, spec_path
, &info
);
4762 /* %efoo means report an error with `foo' as error message
4763 and don't execute any more commands for this file. */
4767 while (*p
!= 0 && *p
!= '\n')
4769 buf
= (char *) alloca (p
- q
+ 1);
4770 strncpy (buf
, q
, p
- q
);
4772 error ("%s", _(buf
));
4777 /* %nfoo means report a notice with `foo' on stderr. */
4781 while (*p
!= 0 && *p
!= '\n')
4783 buf
= (char *) alloca (p
- q
+ 1);
4784 strncpy (buf
, q
, p
- q
);
4786 inform (0, "%s", _(buf
));
4796 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4797 defined, and it is not a directory, and it is
4798 writable, use it. Otherwise, treat this like any
4799 other temporary file. */
4801 if ((!save_temps_flag
)
4802 && (stat (HOST_BIT_BUCKET
, &st
) == 0) && (!S_ISDIR (st
.st_mode
))
4803 && (access (HOST_BIT_BUCKET
, W_OK
) == 0))
4805 obstack_grow (&obstack
, HOST_BIT_BUCKET
,
4806 strlen (HOST_BIT_BUCKET
));
4807 delete_this_arg
= 0;
4812 goto create_temp_file
;
4816 obstack_1grow (&obstack
, '-');
4817 delete_this_arg
= 0;
4820 /* consume suffix */
4821 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4823 if (p
[0] == '%' && p
[1] == 'O')
4828 goto create_temp_file
;
4832 /* consume suffix */
4833 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4835 if (p
[0] == '%' && p
[1] == 'O')
4840 goto create_temp_file
;
4846 struct temp_name
*t
;
4848 const char *suffix
= p
;
4849 char *saved_suffix
= NULL
;
4851 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4853 suffix_length
= p
- suffix
;
4854 if (p
[0] == '%' && p
[1] == 'O')
4857 /* We don't support extra suffix characters after %O. */
4858 if (*p
== '.' || ISALNUM ((unsigned char) *p
))
4859 fatal_error ("spec %qs has invalid %<%%0%c%>", spec
, *p
);
4860 if (suffix_length
== 0)
4861 suffix
= TARGET_OBJECT_SUFFIX
;
4865 = XNEWVEC (char, suffix_length
4866 + strlen (TARGET_OBJECT_SUFFIX
));
4867 strncpy (saved_suffix
, suffix
, suffix_length
);
4868 strcpy (saved_suffix
+ suffix_length
,
4869 TARGET_OBJECT_SUFFIX
);
4871 suffix_length
+= strlen (TARGET_OBJECT_SUFFIX
);
4874 if (compare_debug
< 0)
4876 suffix
= concat (".gk", suffix
, NULL
);
4880 /* If -save-temps=obj and -o were specified, use that for the
4882 if (save_temps_length
)
4885 temp_filename_length
4886 = save_temps_length
+ suffix_length
+ 1;
4887 tmp
= (char *) alloca (temp_filename_length
);
4888 memcpy (tmp
, save_temps_prefix
, save_temps_length
);
4889 memcpy (tmp
+ save_temps_length
, suffix
, suffix_length
);
4890 tmp
[save_temps_length
+ suffix_length
] = '\0';
4891 temp_filename
= save_string (tmp
, save_temps_length
4893 obstack_grow (&obstack
, temp_filename
,
4894 temp_filename_length
);
4896 delete_this_arg
= 0;
4900 /* If the gcc_input_filename has the same suffix specified
4901 for the %g, %u, or %U, and -save-temps is specified,
4902 we could end up using that file as an intermediate
4903 thus clobbering the user's source file (.e.g.,
4904 gcc -save-temps foo.s would clobber foo.s with the
4905 output of cpp0). So check for this condition and
4906 generate a temp file as the intermediate. */
4908 if (save_temps_flag
)
4911 temp_filename_length
= basename_length
+ suffix_length
+ 1;
4912 tmp
= (char *) alloca (temp_filename_length
);
4913 memcpy (tmp
, input_basename
, basename_length
);
4914 memcpy (tmp
+ basename_length
, suffix
, suffix_length
);
4915 tmp
[basename_length
+ suffix_length
] = '\0';
4916 temp_filename
= tmp
;
4918 if (filename_cmp (temp_filename
, gcc_input_filename
) != 0)
4920 #ifndef HOST_LACKS_INODE_NUMBERS
4921 struct stat st_temp
;
4923 /* Note, set_input() resets input_stat_set to 0. */
4924 if (input_stat_set
== 0)
4926 input_stat_set
= stat (gcc_input_filename
,
4928 if (input_stat_set
>= 0)
4932 /* If we have the stat for the gcc_input_filename
4933 and we can do the stat for the temp_filename
4934 then the they could still refer to the same
4935 file if st_dev/st_ino's are the same. */
4936 if (input_stat_set
!= 1
4937 || stat (temp_filename
, &st_temp
) < 0
4938 || input_stat
.st_dev
!= st_temp
.st_dev
4939 || input_stat
.st_ino
!= st_temp
.st_ino
)
4941 /* Just compare canonical pathnames. */
4942 char* input_realname
= lrealpath (gcc_input_filename
);
4943 char* temp_realname
= lrealpath (temp_filename
);
4944 bool files_differ
= filename_cmp (input_realname
, temp_realname
);
4945 free (input_realname
);
4946 free (temp_realname
);
4950 temp_filename
= save_string (temp_filename
,
4951 temp_filename_length
+ 1);
4952 obstack_grow (&obstack
, temp_filename
,
4953 temp_filename_length
);
4955 delete_this_arg
= 0;
4961 /* See if we already have an association of %g/%u/%U and
4963 for (t
= temp_names
; t
; t
= t
->next
)
4964 if (t
->length
== suffix_length
4965 && strncmp (t
->suffix
, suffix
, suffix_length
) == 0
4966 && t
->unique
== (c
== 'u' || c
== 'U' || c
== 'j'))
4969 /* Make a new association if needed. %u and %j
4971 if (t
== 0 || c
== 'u' || c
== 'j')
4975 t
= XNEW (struct temp_name
);
4976 t
->next
= temp_names
;
4979 t
->length
= suffix_length
;
4982 t
->suffix
= saved_suffix
;
4983 saved_suffix
= NULL
;
4986 t
->suffix
= save_string (suffix
, suffix_length
);
4987 t
->unique
= (c
== 'u' || c
== 'U' || c
== 'j');
4988 temp_filename
= make_temp_file (t
->suffix
);
4989 temp_filename_length
= strlen (temp_filename
);
4990 t
->filename
= temp_filename
;
4991 t
->filename_length
= temp_filename_length
;
4994 free (saved_suffix
);
4996 obstack_grow (&obstack
, t
->filename
, t
->filename_length
);
4997 delete_this_arg
= 1;
5005 if (at_file_supplied
)
5007 /* We are going to expand `%i' to `@FILE', where FILE
5008 is a newly-created temporary filename. The filenames
5009 that would usually be expanded in place of %o will be
5010 written to the temporary file. */
5015 for (i
= 0; i
< n_infiles
; i
++)
5016 if (compile_input_file_p (&infiles
[i
]))
5019 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
5021 /* Copy the strings over. */
5022 for (i
= 0, j
= 0; i
< n_infiles
; i
++)
5023 if (compile_input_file_p (&infiles
[i
]))
5025 argv
[j
] = CONST_CAST (char *, infiles
[i
].name
);
5026 infiles
[i
].compiled
= true;
5031 create_at_file (argv
);
5034 for (i
= 0; (int) i
< n_infiles
; i
++)
5035 if (compile_input_file_p (&infiles
[i
]))
5037 store_arg (infiles
[i
].name
, 0, 0);
5038 infiles
[i
].compiled
= true;
5043 obstack_grow (&obstack
, gcc_input_filename
,
5044 input_filename_length
);
5051 struct spec_path_info info
;
5055 do_spec_1 ("-imultilib", 1, NULL
);
5056 /* Make this a separate argument. */
5057 do_spec_1 (" ", 0, NULL
);
5058 do_spec_1 (multilib_dir
, 1, NULL
);
5059 do_spec_1 (" ", 0, NULL
);
5064 do_spec_1 ("-imultiarch", 1, NULL
);
5065 /* Make this a separate argument. */
5066 do_spec_1 (" ", 0, NULL
);
5067 do_spec_1 (multiarch_dir
, 1, NULL
);
5068 do_spec_1 (" ", 0, NULL
);
5071 if (gcc_exec_prefix
)
5073 do_spec_1 ("-iprefix", 1, NULL
);
5074 /* Make this a separate argument. */
5075 do_spec_1 (" ", 0, NULL
);
5076 do_spec_1 (gcc_exec_prefix
, 1, NULL
);
5077 do_spec_1 (" ", 0, NULL
);
5080 if (target_system_root_changed
||
5081 (target_system_root
&& target_sysroot_hdrs_suffix
))
5083 do_spec_1 ("-isysroot", 1, NULL
);
5084 /* Make this a separate argument. */
5085 do_spec_1 (" ", 0, NULL
);
5086 do_spec_1 (target_system_root
, 1, NULL
);
5087 if (target_sysroot_hdrs_suffix
)
5088 do_spec_1 (target_sysroot_hdrs_suffix
, 1, NULL
);
5089 do_spec_1 (" ", 0, NULL
);
5092 info
.option
= "-isystem";
5093 info
.append
= "include";
5094 info
.append_len
= strlen (info
.append
);
5095 info
.omit_relative
= false;
5096 info
.separate_options
= true;
5098 for_each_path (&include_prefixes
, false, info
.append_len
,
5101 info
.append
= "include-fixed";
5102 if (*sysroot_hdrs_suffix_spec
)
5103 info
.append
= concat (info
.append
, dir_separator_str
,
5104 multilib_dir
, NULL
);
5105 info
.append_len
= strlen (info
.append
);
5106 for_each_path (&include_prefixes
, false, info
.append_len
,
5113 int max
= n_infiles
;
5114 max
+= lang_specific_extra_outfiles
;
5116 if (HAVE_GNU_LD
&& at_file_supplied
)
5118 /* We are going to expand `%o' to `@FILE', where FILE
5119 is a newly-created temporary filename. The filenames
5120 that would usually be expanded in place of %o will be
5121 written to the temporary file. */
5126 /* Convert OUTFILES into a form suitable for writeargv. */
5128 /* Determine how many are non-NULL. */
5129 for (n_files
= 0, i
= 0; i
< max
; i
++)
5130 n_files
+= outfiles
[i
] != NULL
;
5132 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
5134 /* Copy the strings over. */
5135 for (i
= 0, j
= 0; i
< max
; i
++)
5138 argv
[j
] = CONST_CAST (char *, outfiles
[i
]);
5143 create_at_file (argv
);
5146 for (i
= 0; i
< max
; i
++)
5148 store_arg (outfiles
[i
], 0, 0);
5153 obstack_grow (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
5158 this_is_library_file
= 1;
5162 this_is_linker_script
= 1;
5166 outfiles
[input_file_number
] = NULL
;
5170 this_is_output_file
= 1;
5175 unsigned int cur_index
= argbuf
.length ();
5176 /* Handle the {...} following the %W. */
5178 fatal_error ("spec %qs has invalid %<%%W%c%>", spec
, *p
);
5179 p
= handle_braces (p
+ 1);
5183 /* If any args were output, mark the last one for deletion
5185 if (argbuf
.length () != cur_index
)
5186 record_temp_file (argbuf
.last (), 0, 1);
5190 /* %x{OPTION} records OPTION for %X to output. */
5198 /* Skip past the option value and make a copy. */
5200 fatal_error ("spec %qs has invalid %<%%x%c%>", spec
, *p
);
5203 string
= save_string (p1
+ 1, p
- p1
- 2);
5205 /* See if we already recorded this option. */
5206 FOR_EACH_VEC_ELT (linker_options
, ix
, opt
)
5207 if (! strcmp (string
, opt
))
5213 /* This option is new; add it. */
5214 add_linker_option (string
, strlen (string
));
5219 /* Dump out the options accumulated previously using %x. */
5221 do_specs_vec (linker_options
);
5224 /* Dump out the options accumulated previously using -Wa,. */
5226 do_specs_vec (assembler_options
);
5229 /* Dump out the options accumulated previously using -Wp,. */
5231 do_specs_vec (preprocessor_options
);
5234 /* Here are digits and numbers that just process
5235 a certain constant string as a spec. */
5238 value
= do_spec_1 (cc1_spec
, 0, NULL
);
5244 value
= do_spec_1 (cc1plus_spec
, 0, NULL
);
5250 value
= do_spec_1 (asm_spec
, 0, NULL
);
5256 value
= do_spec_1 (asm_final_spec
, 0, NULL
);
5263 const char *const spec
5264 = (input_file_compiler
->cpp_spec
5265 ? input_file_compiler
->cpp_spec
5267 value
= do_spec_1 (spec
, 0, NULL
);
5274 value
= do_spec_1 (endfile_spec
, 0, NULL
);
5280 value
= do_spec_1 (link_spec
, 0, NULL
);
5286 value
= do_spec_1 (lib_spec
, 0, NULL
);
5292 if (multilib_os_dir
== NULL
)
5293 obstack_1grow (&obstack
, '.');
5295 obstack_grow (&obstack
, multilib_os_dir
,
5296 strlen (multilib_os_dir
));
5300 value
= do_spec_1 (libgcc_spec
, 0, NULL
);
5306 /* We assume there is a directory
5307 separator at the end of this string. */
5308 if (target_system_root
)
5310 obstack_grow (&obstack
, target_system_root
,
5311 strlen (target_system_root
));
5312 if (target_sysroot_suffix
)
5313 obstack_grow (&obstack
, target_sysroot_suffix
,
5314 strlen (target_sysroot_suffix
));
5319 value
= do_spec_1 (startfile_spec
, 0, NULL
);
5324 /* Here we define characters other than letters and digits. */
5327 p
= handle_braces (p
);
5333 p
= handle_spec_function (p
, NULL
);
5339 obstack_1grow (&obstack
, '%');
5346 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '%')
5348 suffix_subst
= save_string (p
- 1, len
+ 1);
5353 /* Henceforth ignore the option(s) matching the pattern
5359 int have_wildcard
= 0;
5364 switch_option
= SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
;
5366 switch_option
= SWITCH_IGNORE
;
5368 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '\t')
5371 if (p
[len
-1] == '*')
5374 for (i
= 0; i
< n_switches
; i
++)
5375 if (!strncmp (switches
[i
].part1
, p
, len
- have_wildcard
)
5376 && (have_wildcard
|| switches
[i
].part1
[len
] == '\0'))
5378 switches
[i
].live_cond
|= switch_option
;
5379 /* User switch be validated from validate_all_switches.
5380 when the definition is seen from the spec file.
5381 If not defined anywhere, will be rejected. */
5382 if (switches
[i
].known
)
5383 switches
[i
].validated
= true;
5391 if (soft_matched_part
)
5393 if (soft_matched_part
[0])
5394 do_spec_1 (soft_matched_part
, 1, NULL
);
5395 /* Only insert a space after the substitution if it is at the
5396 end of the current sequence. So if:
5398 "%{foo=*:bar%*}%{foo=*:one%*two}"
5400 matches -foo=hello then it will produce:
5402 barhello onehellotwo
5404 if (*p
== 0 || *p
== '}')
5405 do_spec_1 (" ", 0, NULL
);
5408 /* Catch the case where a spec string contains something like
5409 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5410 hand side of the :. */
5411 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5414 /* Process a string found as the value of a spec given by name.
5415 This feature allows individual machine descriptions
5416 to add and use their own specs. */
5419 const char *name
= p
;
5420 struct spec_list
*sl
;
5423 /* The string after the S/P is the name of a spec that is to be
5425 while (*p
&& *p
!= ')')
5428 /* See if it's in the list. */
5429 for (len
= p
- name
, sl
= specs
; sl
; sl
= sl
->next
)
5430 if (sl
->name_len
== len
&& !strncmp (sl
->name
, name
, len
))
5432 name
= *(sl
->ptr_spec
);
5434 fnotice (stderr
, "Processing spec (%s), which is '%s'\n",
5442 value
= do_spec_1 (name
, 0, NULL
);
5447 /* Discard the closing paren. */
5454 error ("spec failure: unrecognized spec option %qc", c
);
5460 /* Backslash: treat next character as ordinary. */
5465 /* Ordinary character: put it into the current argument. */
5466 obstack_1grow (&obstack
, c
);
5470 /* End of string. If we are processing a spec function, we need to
5471 end any pending argument. */
5472 if (processing_spec_function
)
5478 /* Look up a spec function. */
5480 static const struct spec_function
*
5481 lookup_spec_function (const char *name
)
5483 const struct spec_function
*sf
;
5485 for (sf
= static_spec_functions
; sf
->name
!= NULL
; sf
++)
5486 if (strcmp (sf
->name
, name
) == 0)
5492 /* Evaluate a spec function. */
5495 eval_spec_function (const char *func
, const char *args
)
5497 const struct spec_function
*sf
;
5498 const char *funcval
;
5500 /* Saved spec processing context. */
5501 vec
<const_char_p
> save_argbuf
;
5504 int save_delete_this_arg
;
5505 int save_this_is_output_file
;
5506 int save_this_is_library_file
;
5507 int save_input_from_pipe
;
5508 int save_this_is_linker_script
;
5509 const char *save_suffix_subst
;
5511 int save_growing_size
;
5512 void *save_growing_value
;
5514 sf
= lookup_spec_function (func
);
5516 fatal_error ("unknown spec function %qs", func
);
5518 /* Push the spec processing context. */
5519 save_argbuf
= argbuf
;
5521 save_arg_going
= arg_going
;
5522 save_delete_this_arg
= delete_this_arg
;
5523 save_this_is_output_file
= this_is_output_file
;
5524 save_this_is_library_file
= this_is_library_file
;
5525 save_this_is_linker_script
= this_is_linker_script
;
5526 save_input_from_pipe
= input_from_pipe
;
5527 save_suffix_subst
= suffix_subst
;
5529 /* If we have some object growing now, finalize it so the args and function
5530 eval proceed from a cleared context. This is needed to prevent the first
5531 constructed arg from mistakenly including the growing value. We'll push
5532 this value back on the obstack once the function evaluation is done, to
5533 restore a consistent processing context for our caller. This is fine as
5534 the address of growing objects isn't guaranteed to remain stable until
5535 they are finalized, and we expect this situation to be rare enough for
5536 the extra copy not to be an issue. */
5537 save_growing_size
= obstack_object_size (&obstack
);
5538 if (save_growing_size
> 0)
5539 save_growing_value
= obstack_finish (&obstack
);
5541 /* Create a new spec processing context, and build the function
5545 if (do_spec_2 (args
) < 0)
5546 fatal_error ("error in args to spec function %qs", func
);
5548 /* argbuf_index is an index for the next argument to be inserted, and
5549 so contains the count of the args already inserted. */
5551 funcval
= (*sf
->func
) (argbuf
.length (),
5554 /* Pop the spec processing context. */
5556 argbuf
= save_argbuf
;
5558 arg_going
= save_arg_going
;
5559 delete_this_arg
= save_delete_this_arg
;
5560 this_is_output_file
= save_this_is_output_file
;
5561 this_is_library_file
= save_this_is_library_file
;
5562 this_is_linker_script
= save_this_is_linker_script
;
5563 input_from_pipe
= save_input_from_pipe
;
5564 suffix_subst
= save_suffix_subst
;
5566 if (save_growing_size
> 0)
5567 obstack_grow (&obstack
, save_growing_value
, save_growing_size
);
5572 /* Handle a spec function call of the form:
5576 ARGS is processed as a spec in a separate context and split into an
5577 argument vector in the normal fashion. The function returns a string
5578 containing a spec which we then process in the caller's context, or
5579 NULL if no processing is required.
5581 If RETVAL_NONNULL is not NULL, then store a bool whether function
5582 returned non-NULL. */
5585 handle_spec_function (const char *p
, bool *retval_nonnull
)
5588 const char *endp
, *funcval
;
5591 processing_spec_function
++;
5593 /* Get the function name. */
5594 for (endp
= p
; *endp
!= '\0'; endp
++)
5596 if (*endp
== '(') /* ) */
5598 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5599 if (!ISALNUM (*endp
) && !(*endp
== '-' || *endp
== '_'))
5600 fatal_error ("malformed spec function name");
5602 if (*endp
!= '(') /* ) */
5603 fatal_error ("no arguments for spec function");
5604 func
= save_string (p
, endp
- p
);
5607 /* Get the arguments. */
5608 for (count
= 0; *endp
!= '\0'; endp
++)
5617 else if (*endp
== '(') /* ) */
5622 fatal_error ("malformed spec function arguments");
5623 args
= save_string (p
, endp
- p
);
5626 /* p now points to just past the end of the spec function expression. */
5628 funcval
= eval_spec_function (func
, args
);
5629 if (funcval
!= NULL
&& do_spec_1 (funcval
, 0, NULL
) < 0)
5632 *retval_nonnull
= funcval
!= NULL
;
5637 processing_spec_function
--;
5642 /* Inline subroutine of handle_braces. Returns true if the current
5643 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5645 input_suffix_matches (const char *atom
, const char *end_atom
)
5647 return (input_suffix
5648 && !strncmp (input_suffix
, atom
, end_atom
- atom
)
5649 && input_suffix
[end_atom
- atom
] == '\0');
5652 /* Subroutine of handle_braces. Returns true if the current
5653 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5655 input_spec_matches (const char *atom
, const char *end_atom
)
5657 return (input_file_compiler
5658 && input_file_compiler
->suffix
5659 && input_file_compiler
->suffix
[0] != '\0'
5660 && !strncmp (input_file_compiler
->suffix
+ 1, atom
,
5662 && input_file_compiler
->suffix
[end_atom
- atom
+ 1] == '\0');
5665 /* Subroutine of handle_braces. Returns true if a switch
5666 matching the atom bracketed by ATOM and END_ATOM appeared on the
5669 switch_matches (const char *atom
, const char *end_atom
, int starred
)
5672 int len
= end_atom
- atom
;
5673 int plen
= starred
? len
: -1;
5675 for (i
= 0; i
< n_switches
; i
++)
5676 if (!strncmp (switches
[i
].part1
, atom
, len
)
5677 && (starred
|| switches
[i
].part1
[len
] == '\0')
5678 && check_live_switch (i
, plen
))
5681 /* Check if a switch with separated form matching the atom.
5682 We check -D and -U switches. */
5683 else if (switches
[i
].args
!= 0)
5685 if ((*switches
[i
].part1
== 'D' || *switches
[i
].part1
== 'U')
5686 && *switches
[i
].part1
== atom
[0])
5688 if (!strncmp (switches
[i
].args
[0], &atom
[1], len
- 1)
5689 && (starred
|| (switches
[i
].part1
[1] == '\0'
5690 && switches
[i
].args
[0][len
- 1] == '\0'))
5691 && check_live_switch (i
, (starred
? 1 : -1)))
5699 /* Inline subroutine of handle_braces. Mark all of the switches which
5700 match ATOM (extends to END_ATOM; STARRED indicates whether there
5701 was a star after the atom) for later processing. */
5703 mark_matching_switches (const char *atom
, const char *end_atom
, int starred
)
5706 int len
= end_atom
- atom
;
5707 int plen
= starred
? len
: -1;
5709 for (i
= 0; i
< n_switches
; i
++)
5710 if (!strncmp (switches
[i
].part1
, atom
, len
)
5711 && (starred
|| switches
[i
].part1
[len
] == '\0')
5712 && check_live_switch (i
, plen
))
5713 switches
[i
].ordering
= 1;
5716 /* Inline subroutine of handle_braces. Process all the currently
5717 marked switches through give_switch, and clear the marks. */
5719 process_marked_switches (void)
5723 for (i
= 0; i
< n_switches
; i
++)
5724 if (switches
[i
].ordering
== 1)
5726 switches
[i
].ordering
= 0;
5731 /* Handle a %{ ... } construct. P points just inside the leading {.
5732 Returns a pointer one past the end of the brace block, or 0
5733 if we call do_spec_1 and that returns -1. */
5736 handle_braces (const char *p
)
5738 const char *atom
, *end_atom
;
5739 const char *d_atom
= NULL
, *d_end_atom
= NULL
;
5740 const char *orig
= p
;
5748 bool a_must_be_last
= false;
5749 bool ordered_set
= false;
5750 bool disjunct_set
= false;
5751 bool disj_matched
= false;
5752 bool disj_starred
= true;
5753 bool n_way_choice
= false;
5754 bool n_way_matched
= false;
5756 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5763 /* Scan one "atom" (S in the description above of %{}, possibly
5764 with '!', '.', '@', ',', or '*' modifiers). */
5766 a_is_suffix
= false;
5767 a_is_starred
= false;
5768 a_is_negated
= false;
5769 a_is_spectype
= false;
5773 p
++, a_is_negated
= true;
5776 if (*p
== '%' && p
[1] == ':')
5780 p
= handle_spec_function (p
+ 2, &a_matched
);
5785 p
++, a_is_suffix
= true;
5787 p
++, a_is_spectype
= true;
5790 while (ISIDNUM (*p
) || *p
== '-' || *p
== '+' || *p
== '='
5791 || *p
== ',' || *p
== '.' || *p
== '@')
5796 p
++, a_is_starred
= 1;
5803 /* Substitute the switch(es) indicated by the current atom. */
5805 if (disjunct_set
|| n_way_choice
|| a_is_negated
|| a_is_suffix
5806 || a_is_spectype
|| atom
== end_atom
)
5809 mark_matching_switches (atom
, end_atom
, a_is_starred
);
5812 process_marked_switches ();
5816 /* Substitute some text if the current atom appears as a switch
5818 disjunct_set
= true;
5822 if (atom
&& atom
== end_atom
)
5824 if (!n_way_choice
|| disj_matched
|| *p
== '|'
5825 || a_is_negated
|| a_is_suffix
|| a_is_spectype
5829 /* An empty term may appear as the last choice of an
5830 N-way choice set; it means "otherwise". */
5831 a_must_be_last
= true;
5832 disj_matched
= !n_way_matched
;
5833 disj_starred
= false;
5837 if ((a_is_suffix
|| a_is_spectype
) && a_is_starred
)
5841 disj_starred
= false;
5843 /* Don't bother testing this atom if we already have a
5845 if (!disj_matched
&& !n_way_matched
)
5848 /* a_matched is already set by handle_spec_function. */;
5849 else if (a_is_suffix
)
5850 a_matched
= input_suffix_matches (atom
, end_atom
);
5851 else if (a_is_spectype
)
5852 a_matched
= input_spec_matches (atom
, end_atom
);
5854 a_matched
= switch_matches (atom
, end_atom
, a_is_starred
);
5856 if (a_matched
!= a_is_negated
)
5858 disj_matched
= true;
5860 d_end_atom
= end_atom
;
5867 /* Found the body, that is, the text to substitute if the
5868 current disjunction matches. */
5869 p
= process_brace_body (p
+ 1, d_atom
, d_end_atom
, disj_starred
,
5870 disj_matched
&& !n_way_matched
);
5874 /* If we have an N-way choice, reset state for the next
5878 n_way_choice
= true;
5879 n_way_matched
|= disj_matched
;
5880 disj_matched
= false;
5881 disj_starred
= true;
5882 d_atom
= d_end_atom
= NULL
;
5891 while (*p
++ != '}');
5896 fatal_error ("braced spec %qs is invalid at %qc", orig
, *p
);
5901 /* Subroutine of handle_braces. Scan and process a brace substitution body
5902 (X in the description of %{} syntax). P points one past the colon;
5903 ATOM and END_ATOM bracket the first atom which was found to be true
5904 (present) in the current disjunction; STARRED indicates whether all
5905 the atoms in the current disjunction were starred (for syntax validation);
5906 MATCHED indicates whether the disjunction matched or not, and therefore
5907 whether or not the body is to be processed through do_spec_1 or just
5908 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5912 process_brace_body (const char *p
, const char *atom
, const char *end_atom
,
5913 int starred
, int matched
)
5915 const char *body
, *end_body
;
5916 unsigned int nesting_level
;
5917 bool have_subst
= false;
5919 /* Locate the closing } or ;, honoring nested braces.
5920 Trim trailing whitespace. */
5929 if (!--nesting_level
)
5932 else if (*p
== ';' && nesting_level
== 1)
5934 else if (*p
== '%' && p
[1] == '*' && nesting_level
== 1)
5936 else if (*p
== '\0')
5942 while (end_body
[-1] == ' ' || end_body
[-1] == '\t')
5945 if (have_subst
&& !starred
)
5950 /* Copy the substitution body to permanent storage and execute it.
5951 If have_subst is false, this is a simple matter of running the
5952 body through do_spec_1... */
5953 char *string
= save_string (body
, end_body
- body
);
5956 if (do_spec_1 (string
, 0, NULL
) < 0)
5961 /* ... but if have_subst is true, we have to process the
5962 body once for each matching switch, with %* set to the
5963 variant part of the switch. */
5964 unsigned int hard_match_len
= end_atom
- atom
;
5967 for (i
= 0; i
< n_switches
; i
++)
5968 if (!strncmp (switches
[i
].part1
, atom
, hard_match_len
)
5969 && check_live_switch (i
, hard_match_len
))
5971 if (do_spec_1 (string
, 0,
5972 &switches
[i
].part1
[hard_match_len
]) < 0)
5974 /* Pass any arguments this switch has. */
5976 suffix_subst
= NULL
;
5984 fatal_error ("braced spec body %qs is invalid", body
);
5987 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5988 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5989 spec, or -1 if either exact match or %* is used.
5991 A -O switch is obsoleted by a later -O switch. A -f, -g, -m, or -W switch
5992 whose value does not begin with "no-" is obsoleted by the same value
5993 with the "no-", similarly for a switch with the "no-" prefix. */
5996 check_live_switch (int switchnum
, int prefix_length
)
5998 const char *name
= switches
[switchnum
].part1
;
6001 /* If we already processed this switch and determined if it was
6002 live or not, return our past determination. */
6003 if (switches
[switchnum
].live_cond
!= 0)
6004 return ((switches
[switchnum
].live_cond
& SWITCH_LIVE
) != 0
6005 && (switches
[switchnum
].live_cond
& SWITCH_FALSE
) == 0
6006 && (switches
[switchnum
].live_cond
& SWITCH_IGNORE_PERMANENTLY
)
6009 /* In the common case of {<at-most-one-letter>*}, a negating
6010 switch would always match, so ignore that case. We will just
6011 send the conflicting switches to the compiler phase. */
6012 if (prefix_length
>= 0 && prefix_length
<= 1)
6015 /* Now search for duplicate in a manner that depends on the name. */
6019 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
6020 if (switches
[i
].part1
[0] == 'O')
6022 switches
[switchnum
].validated
= true;
6023 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
6028 case 'W': case 'f': case 'm': case 'g':
6029 if (! strncmp (name
+ 1, "no-", 3))
6031 /* We have Xno-YYY, search for XYYY. */
6032 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
6033 if (switches
[i
].part1
[0] == name
[0]
6034 && ! strcmp (&switches
[i
].part1
[1], &name
[4]))
6036 /* --specs are validated with the validate_switches mechanism. */
6037 if (switches
[switchnum
].known
)
6038 switches
[switchnum
].validated
= true;
6039 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
6045 /* We have XYYY, search for Xno-YYY. */
6046 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
6047 if (switches
[i
].part1
[0] == name
[0]
6048 && switches
[i
].part1
[1] == 'n'
6049 && switches
[i
].part1
[2] == 'o'
6050 && switches
[i
].part1
[3] == '-'
6051 && !strcmp (&switches
[i
].part1
[4], &name
[1]))
6053 /* --specs are validated with the validate_switches mechanism. */
6054 if (switches
[switchnum
].known
)
6055 switches
[switchnum
].validated
= true;
6056 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
6063 /* Otherwise the switch is live. */
6064 switches
[switchnum
].live_cond
|= SWITCH_LIVE
;
6068 /* Pass a switch to the current accumulating command
6069 in the same form that we received it.
6070 SWITCHNUM identifies the switch; it is an index into
6071 the vector of switches gcc received, which is `switches'.
6072 This cannot fail since it never finishes a command line.
6074 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
6077 give_switch (int switchnum
, int omit_first_word
)
6079 if ((switches
[switchnum
].live_cond
& SWITCH_IGNORE
) != 0)
6082 if (!omit_first_word
)
6084 do_spec_1 ("-", 0, NULL
);
6085 do_spec_1 (switches
[switchnum
].part1
, 1, NULL
);
6088 if (switches
[switchnum
].args
!= 0)
6091 for (p
= switches
[switchnum
].args
; *p
; p
++)
6093 const char *arg
= *p
;
6095 do_spec_1 (" ", 0, NULL
);
6098 unsigned length
= strlen (arg
);
6101 while (length
-- && !IS_DIR_SEPARATOR (arg
[length
]))
6102 if (arg
[length
] == '.')
6104 (CONST_CAST (char *, arg
))[length
] = 0;
6108 do_spec_1 (arg
, 1, NULL
);
6110 (CONST_CAST (char *, arg
))[length
] = '.';
6111 do_spec_1 (suffix_subst
, 1, NULL
);
6114 do_spec_1 (arg
, 1, NULL
);
6118 do_spec_1 (" ", 0, NULL
);
6119 switches
[switchnum
].validated
= true;
6122 /* Search for a file named NAME trying various prefixes including the
6123 user's -B prefix and some standard ones.
6124 Return the absolute file name found. If nothing is found, return NAME. */
6127 find_file (const char *name
)
6129 char *newname
= find_a_file (&startfile_prefixes
, name
, R_OK
, true);
6130 return newname
? newname
: name
;
6133 /* Determine whether a directory exists. If LINKER, return 0 for
6134 certain fixed names not needed by the linker. */
6137 is_directory (const char *path1
, bool linker
)
6144 /* Ensure the string ends with "/.". The resulting path will be a
6145 directory even if the given path is a symbolic link. */
6146 len1
= strlen (path1
);
6147 path
= (char *) alloca (3 + len1
);
6148 memcpy (path
, path1
, len1
);
6150 if (!IS_DIR_SEPARATOR (cp
[-1]))
6151 *cp
++ = DIR_SEPARATOR
;
6155 /* Exclude directories that the linker is known to search. */
6157 && IS_DIR_SEPARATOR (path
[0])
6159 && filename_ncmp (path
+ 1, "lib", 3) == 0)
6161 && filename_ncmp (path
+ 1, "usr", 3) == 0
6162 && IS_DIR_SEPARATOR (path
[4])
6163 && filename_ncmp (path
+ 5, "lib", 3) == 0)))
6166 return (stat (path
, &st
) >= 0 && S_ISDIR (st
.st_mode
));
6169 /* Set up the various global variables to indicate that we're processing
6170 the input file named FILENAME. */
6173 set_input (const char *filename
)
6177 gcc_input_filename
= filename
;
6178 input_filename_length
= strlen (gcc_input_filename
);
6179 input_basename
= lbasename (gcc_input_filename
);
6181 /* Find a suffix starting with the last period,
6182 and set basename_length to exclude that suffix. */
6183 basename_length
= strlen (input_basename
);
6184 suffixed_basename_length
= basename_length
;
6185 p
= input_basename
+ basename_length
;
6186 while (p
!= input_basename
&& *p
!= '.')
6188 if (*p
== '.' && p
!= input_basename
)
6190 basename_length
= p
- input_basename
;
6191 input_suffix
= p
+ 1;
6196 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
6197 we will need to do a stat on the gcc_input_filename. The
6198 INPUT_STAT_SET signals that the stat is needed. */
6202 /* On fatal signals, delete all the temporary files. */
6205 fatal_signal (int signum
)
6207 signal (signum
, SIG_DFL
);
6208 delete_failure_queue ();
6209 delete_temp_files ();
6210 /* Get the same signal again, this time not handled,
6211 so its normal effect occurs. */
6212 kill (getpid (), signum
);
6215 /* Compare the contents of the two files named CMPFILE[0] and
6216 CMPFILE[1]. Return zero if they're identical, nonzero
6220 compare_files (char *cmpfile
[])
6223 FILE *temp
[2] = { NULL
, NULL
};
6229 void *map
[2] = { NULL
, NULL
};
6231 for (i
= 0; i
< 2; i
++)
6235 if (stat (cmpfile
[i
], &st
) < 0 || !S_ISREG (st
.st_mode
))
6237 error ("%s: could not determine length of compare-debug file %s",
6238 gcc_input_filename
, cmpfile
[i
]);
6243 length
[i
] = st
.st_size
;
6246 if (!ret
&& length
[0] != length
[1])
6248 error ("%s: -fcompare-debug failure (length)", gcc_input_filename
);
6253 for (i
= 0; i
< 2; i
++)
6255 int fd
= open (cmpfile
[i
], O_RDONLY
);
6258 error ("%s: could not open compare-debug file %s",
6259 gcc_input_filename
, cmpfile
[i
]);
6264 map
[i
] = mmap (NULL
, length
[i
], PROT_READ
, MAP_PRIVATE
, fd
, 0);
6267 if (map
[i
] == (void *) MAP_FAILED
)
6276 if (memcmp (map
[0], map
[1], length
[0]) != 0)
6278 error ("%s: -fcompare-debug failure", gcc_input_filename
);
6283 for (i
= 0; i
< 2; i
++)
6285 munmap ((caddr_t
) map
[i
], length
[i
]);
6294 for (i
= 0; i
< 2; i
++)
6296 temp
[i
] = fopen (cmpfile
[i
], "r");
6299 error ("%s: could not open compare-debug file %s",
6300 gcc_input_filename
, cmpfile
[i
]);
6306 if (!ret
&& temp
[0] && temp
[1])
6310 c0
= fgetc (temp
[0]);
6311 c1
= fgetc (temp
[1]);
6315 error ("%s: -fcompare-debug failure",
6316 gcc_input_filename
);
6325 for (i
= 1; i
>= 0; i
--)
6334 extern int main (int, char **);
6337 main (int argc
, char **argv
)
6341 int linker_was_run
= 0;
6342 int lang_n_infiles
= 0;
6343 int num_linker_inputs
= 0;
6344 char *explicit_link_files
;
6346 char *lto_wrapper_file
;
6348 struct user_specs
*uptr
;
6349 char **old_argv
= argv
;
6350 struct cl_decoded_option
*decoded_options
;
6351 unsigned int decoded_options_count
;
6353 p
= argv
[0] + strlen (argv
[0]);
6354 while (p
!= argv
[0] && !IS_DIR_SEPARATOR (p
[-1]))
6358 xmalloc_set_program_name (progname
);
6360 expandargv (&argc
, &argv
);
6362 /* Determine if any expansions were made. */
6363 if (argv
!= old_argv
)
6364 at_file_supplied
= true;
6366 /* Register the language-independent parameters. */
6367 global_init_params ();
6370 init_options_struct (&global_options
, &global_options_set
);
6372 decode_cmdline_options_to_array (argc
, CONST_CAST2 (const char **, char **,
6375 &decoded_options
, &decoded_options_count
);
6377 /* Unlock the stdio streams. */
6378 unlock_std_streams ();
6380 gcc_init_libintl ();
6382 diagnostic_initialize (global_dc
, 0);
6384 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6385 /* Perform host dependent initialization when needed. */
6386 GCC_DRIVER_HOST_INITIALIZATION
;
6389 if (atexit (delete_temp_files
) != 0)
6390 fatal_error ("atexit failed");
6392 if (signal (SIGINT
, SIG_IGN
) != SIG_IGN
)
6393 signal (SIGINT
, fatal_signal
);
6395 if (signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
6396 signal (SIGHUP
, fatal_signal
);
6398 if (signal (SIGTERM
, SIG_IGN
) != SIG_IGN
)
6399 signal (SIGTERM
, fatal_signal
);
6401 if (signal (SIGPIPE
, SIG_IGN
) != SIG_IGN
)
6402 signal (SIGPIPE
, fatal_signal
);
6405 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6406 receive the signal. A different setting is inheritable */
6407 signal (SIGCHLD
, SIG_DFL
);
6410 /* Parsing and gimplification sometimes need quite large stack.
6411 Increase stack size limits if possible. */
6412 stack_limit_increase (64 * 1024 * 1024);
6414 /* Allocate the argument vector. */
6417 obstack_init (&obstack
);
6419 /* Build multilib_select, et. al from the separate lines that make up each
6420 multilib selection. */
6422 const char *const *q
= multilib_raw
;
6425 obstack_init (&multilib_obstack
);
6426 while ((p
= *q
++) != (char *) 0)
6427 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6429 obstack_1grow (&multilib_obstack
, 0);
6430 multilib_select
= XOBFINISH (&multilib_obstack
, const char *);
6432 q
= multilib_matches_raw
;
6433 while ((p
= *q
++) != (char *) 0)
6434 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6436 obstack_1grow (&multilib_obstack
, 0);
6437 multilib_matches
= XOBFINISH (&multilib_obstack
, const char *);
6439 q
= multilib_exclusions_raw
;
6440 while ((p
= *q
++) != (char *) 0)
6441 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6443 obstack_1grow (&multilib_obstack
, 0);
6444 multilib_exclusions
= XOBFINISH (&multilib_obstack
, const char *);
6446 q
= multilib_reuse_raw
;
6447 while ((p
= *q
++) != (char *) 0)
6448 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6450 obstack_1grow (&multilib_obstack
, 0);
6451 multilib_reuse
= XOBFINISH (&multilib_obstack
, const char *);
6454 for (i
= 0; i
< ARRAY_SIZE (multilib_defaults_raw
); i
++)
6457 obstack_1grow (&multilib_obstack
, ' ');
6458 obstack_grow (&multilib_obstack
,
6459 multilib_defaults_raw
[i
],
6460 strlen (multilib_defaults_raw
[i
]));
6464 obstack_1grow (&multilib_obstack
, 0);
6465 multilib_defaults
= XOBFINISH (&multilib_obstack
, const char *);
6468 #ifdef INIT_ENVIRONMENT
6469 /* Set up any other necessary machine specific environment variables. */
6470 xputenv (INIT_ENVIRONMENT
);
6473 /* Make a table of what switches there are (switches, n_switches).
6474 Make a table of specified input files (infiles, n_infiles).
6475 Decode switches that are handled locally. */
6477 process_command (decoded_options_count
, decoded_options
);
6479 /* Initialize the vector of specs to just the default.
6480 This means one element containing 0s, as a terminator. */
6482 compilers
= XNEWVAR (struct compiler
, sizeof default_compilers
);
6483 memcpy (compilers
, default_compilers
, sizeof default_compilers
);
6484 n_compilers
= n_default_compilers
;
6486 /* Read specs from a file if there is one. */
6488 machine_suffix
= concat (spec_machine
, dir_separator_str
,
6489 spec_version
, dir_separator_str
, NULL
);
6490 just_machine_suffix
= concat (spec_machine
, dir_separator_str
, NULL
);
6492 specs_file
= find_a_file (&startfile_prefixes
, "specs", R_OK
, true);
6493 /* Read the specs file unless it is a default one. */
6494 if (specs_file
!= 0 && strcmp (specs_file
, "specs"))
6495 read_specs (specs_file
, true, false);
6499 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6500 for any override of as, ld and libraries. */
6501 specs_file
= (char *) alloca (strlen (standard_exec_prefix
)
6502 + strlen (just_machine_suffix
) + sizeof ("specs"));
6504 strcpy (specs_file
, standard_exec_prefix
);
6505 strcat (specs_file
, just_machine_suffix
);
6506 strcat (specs_file
, "specs");
6507 if (access (specs_file
, R_OK
) == 0)
6508 read_specs (specs_file
, true, false);
6510 /* Process any configure-time defaults specified for the command line
6511 options, via OPTION_DEFAULT_SPECS. */
6512 for (i
= 0; i
< ARRAY_SIZE (option_default_specs
); i
++)
6513 do_option_spec (option_default_specs
[i
].name
,
6514 option_default_specs
[i
].spec
);
6516 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6517 of the command line. */
6519 for (i
= 0; i
< ARRAY_SIZE (driver_self_specs
); i
++)
6520 do_self_spec (driver_self_specs
[i
]);
6522 /* If not cross-compiling, look for executables in the standard
6524 if (*cross_compile
== '0')
6526 if (*md_exec_prefix
)
6528 add_prefix (&exec_prefixes
, md_exec_prefix
, "GCC",
6529 PREFIX_PRIORITY_LAST
, 0, 0);
6533 /* Process sysroot_suffix_spec. */
6534 if (*sysroot_suffix_spec
!= 0
6535 && !no_sysroot_suffix
6536 && do_spec_2 (sysroot_suffix_spec
) == 0)
6538 if (argbuf
.length () > 1)
6539 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6540 else if (argbuf
.length () == 1)
6541 target_sysroot_suffix
= xstrdup (argbuf
.last ());
6544 #ifdef HAVE_LD_SYSROOT
6545 /* Pass the --sysroot option to the linker, if it supports that. If
6546 there is a sysroot_suffix_spec, it has already been processed by
6547 this point, so target_system_root really is the system root we
6549 if (target_system_root
)
6551 obstack_grow (&obstack
, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6552 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
6553 set_spec ("link", XOBFINISH (&obstack
, const char *), false);
6557 /* Process sysroot_hdrs_suffix_spec. */
6558 if (*sysroot_hdrs_suffix_spec
!= 0
6559 && !no_sysroot_suffix
6560 && do_spec_2 (sysroot_hdrs_suffix_spec
) == 0)
6562 if (argbuf
.length () > 1)
6563 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6564 else if (argbuf
.length () == 1)
6565 target_sysroot_hdrs_suffix
= xstrdup (argbuf
.last ());
6568 /* Look for startfiles in the standard places. */
6569 if (*startfile_prefix_spec
!= 0
6570 && do_spec_2 (startfile_prefix_spec
) == 0
6571 && do_spec_1 (" ", 0, NULL
) == 0)
6575 FOR_EACH_VEC_ELT (argbuf
, ndx
, arg
)
6576 add_sysrooted_prefix (&startfile_prefixes
, arg
, "BINUTILS",
6577 PREFIX_PRIORITY_LAST
, 0, 1);
6579 /* We should eventually get rid of all these and stick to
6580 startfile_prefix_spec exclusively. */
6581 else if (*cross_compile
== '0' || target_system_root
)
6583 if (*md_startfile_prefix
)
6584 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix
,
6585 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
6587 if (*md_startfile_prefix_1
)
6588 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix_1
,
6589 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
6591 /* If standard_startfile_prefix is relative, base it on
6592 standard_exec_prefix. This lets us move the installed tree
6593 as a unit. If GCC_EXEC_PREFIX is defined, base
6594 standard_startfile_prefix on that as well.
6596 If the prefix is relative, only search it for native compilers;
6597 otherwise we will search a directory containing host libraries. */
6598 if (IS_ABSOLUTE_PATH (standard_startfile_prefix
))
6599 add_sysrooted_prefix (&startfile_prefixes
,
6600 standard_startfile_prefix
, "BINUTILS",
6601 PREFIX_PRIORITY_LAST
, 0, 1);
6602 else if (*cross_compile
== '0')
6604 add_prefix (&startfile_prefixes
,
6605 concat (gcc_exec_prefix
6606 ? gcc_exec_prefix
: standard_exec_prefix
,
6608 standard_startfile_prefix
, NULL
),
6609 NULL
, PREFIX_PRIORITY_LAST
, 0, 1);
6612 /* Sysrooted prefixes are relocated because target_system_root is
6613 also relocated by gcc_exec_prefix. */
6614 if (*standard_startfile_prefix_1
)
6615 add_sysrooted_prefix (&startfile_prefixes
,
6616 standard_startfile_prefix_1
, "BINUTILS",
6617 PREFIX_PRIORITY_LAST
, 0, 1);
6618 if (*standard_startfile_prefix_2
)
6619 add_sysrooted_prefix (&startfile_prefixes
,
6620 standard_startfile_prefix_2
, "BINUTILS",
6621 PREFIX_PRIORITY_LAST
, 0, 1);
6624 /* Process any user specified specs in the order given on the command
6626 for (uptr
= user_specs_head
; uptr
; uptr
= uptr
->next
)
6628 char *filename
= find_a_file (&startfile_prefixes
, uptr
->filename
,
6630 read_specs (filename
? filename
: uptr
->filename
, false, true);
6633 /* Process any user self specs. */
6635 struct spec_list
*sl
;
6636 for (sl
= specs
; sl
; sl
= sl
->next
)
6637 if (sl
->name_len
== sizeof "self_spec" - 1
6638 && !strcmp (sl
->name
, "self_spec"))
6639 do_self_spec (*sl
->ptr_spec
);
6644 enum save_temps save
;
6646 if (!compare_debug_second
)
6648 n_switches_debug_check
[1] = n_switches
;
6649 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
6650 switches_debug_check
[1] = XDUPVEC (struct switchstr
, switches
,
6653 do_self_spec ("%:compare-debug-self-opt()");
6654 n_switches_debug_check
[0] = n_switches
;
6655 n_switches_alloc_debug_check
[0] = n_switches_alloc
;
6656 switches_debug_check
[0] = switches
;
6658 n_switches
= n_switches_debug_check
[1];
6659 n_switches_alloc
= n_switches_alloc_debug_check
[1];
6660 switches
= switches_debug_check
[1];
6663 /* Avoid crash when computing %j in this early. */
6664 save
= save_temps_flag
;
6665 save_temps_flag
= SAVE_TEMPS_NONE
;
6667 compare_debug
= -compare_debug
;
6668 do_self_spec ("%:compare-debug-self-opt()");
6670 save_temps_flag
= save
;
6672 if (!compare_debug_second
)
6674 n_switches_debug_check
[1] = n_switches
;
6675 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
6676 switches_debug_check
[1] = switches
;
6677 compare_debug
= -compare_debug
;
6678 n_switches
= n_switches_debug_check
[0];
6679 n_switches_alloc
= n_switches_debug_check
[0];
6680 switches
= switches_debug_check
[0];
6685 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6686 if (gcc_exec_prefix
)
6687 gcc_exec_prefix
= concat (gcc_exec_prefix
, spec_machine
, dir_separator_str
,
6688 spec_version
, dir_separator_str
, NULL
);
6690 /* Now we have the specs.
6691 Set the `valid' bits for switches that match anything in any spec. */
6693 validate_all_switches ();
6695 /* Now that we have the switches and the specs, set
6696 the subdirectory based on the options. */
6697 set_multilib_dir ();
6699 /* Set up to remember the pathname of gcc and any options
6700 needed for collect. We use argv[0] instead of progname because
6701 we need the complete pathname. */
6702 obstack_init (&collect_obstack
);
6703 obstack_grow (&collect_obstack
, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6704 obstack_grow (&collect_obstack
, argv
[0], strlen (argv
[0]) + 1);
6705 xputenv (XOBFINISH (&collect_obstack
, char *));
6707 /* Set up to remember the pathname of the lto wrapper. */
6710 lto_wrapper_file
= NULL
;
6712 lto_wrapper_file
= find_a_file (&exec_prefixes
, "lto-wrapper",
6714 if (lto_wrapper_file
)
6716 lto_wrapper_file
= convert_white_space (lto_wrapper_file
);
6717 lto_wrapper_spec
= lto_wrapper_file
;
6718 obstack_init (&collect_obstack
);
6719 obstack_grow (&collect_obstack
, "COLLECT_LTO_WRAPPER=",
6720 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
6721 obstack_grow (&collect_obstack
, lto_wrapper_spec
,
6722 strlen (lto_wrapper_spec
) + 1);
6723 xputenv (XOBFINISH (&collect_obstack
, char *));
6726 /* Reject switches that no pass was interested in. */
6728 for (i
= 0; (int) i
< n_switches
; i
++)
6729 if (! switches
[i
].validated
)
6730 error ("unrecognized command line option %<-%s%>", switches
[i
].part1
);
6732 /* Obey some of the options. */
6734 if (print_search_dirs
)
6736 printf (_("install: %s%s\n"),
6737 gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
6738 gcc_exec_prefix
? "" : machine_suffix
);
6739 printf (_("programs: %s\n"),
6740 build_search_list (&exec_prefixes
, "", false, false));
6741 printf (_("libraries: %s\n"),
6742 build_search_list (&startfile_prefixes
, "", false, true));
6746 if (print_file_name
)
6748 printf ("%s\n", find_file (print_file_name
));
6752 if (print_prog_name
)
6754 if (use_ld
!= NULL
&& ! strcmp (print_prog_name
, "ld"))
6756 /* Append USE_LD to to the default linker. */
6757 #ifdef DEFAULT_LINKER
6759 # ifdef HAVE_HOST_EXECUTABLE_SUFFIX
6760 int len
= (sizeof (DEFAULT_LINKER
)
6761 - sizeof (HOST_EXECUTABLE_SUFFIX
));
6765 char *default_linker
= xstrdup (DEFAULT_LINKER
);
6766 /* Strip HOST_EXECUTABLE_SUFFIX if DEFAULT_LINKER contains
6767 HOST_EXECUTABLE_SUFFIX. */
6768 if (! strcmp (&default_linker
[len
], HOST_EXECUTABLE_SUFFIX
))
6770 default_linker
[len
] = '\0';
6771 ld
= concat (default_linker
, use_ld
,
6772 HOST_EXECUTABLE_SUFFIX
, NULL
);
6777 ld
= concat (DEFAULT_LINKER
, use_ld
, NULL
);
6778 if (access (ld
, X_OK
) == 0)
6780 printf ("%s\n", ld
);
6784 print_prog_name
= concat (print_prog_name
, use_ld
, NULL
);
6786 char *newname
= find_a_file (&exec_prefixes
, print_prog_name
, X_OK
, 0);
6787 printf ("%s\n", (newname
? newname
: print_prog_name
));
6791 if (print_multi_lib
)
6793 print_multilib_info ();
6797 if (print_multi_directory
)
6799 if (multilib_dir
== NULL
)
6802 printf ("%s\n", multilib_dir
);
6806 if (print_multiarch
)
6808 if (multiarch_dir
== NULL
)
6811 printf ("%s\n", multiarch_dir
);
6817 if (target_system_root
)
6819 if (target_sysroot_suffix
)
6820 printf ("%s%s\n", target_system_root
, target_sysroot_suffix
);
6822 printf ("%s\n", target_system_root
);
6827 if (print_multi_os_directory
)
6829 if (multilib_os_dir
== NULL
)
6832 printf ("%s\n", multilib_os_dir
);
6836 if (print_sysroot_headers_suffix
)
6838 if (*sysroot_hdrs_suffix_spec
)
6840 printf("%s\n", (target_sysroot_hdrs_suffix
6841 ? target_sysroot_hdrs_suffix
6846 /* The error status indicates that only one set of fixed
6847 headers should be built. */
6848 fatal_error ("not configured with sysroot headers suffix");
6851 if (print_help_list
)
6857 printf (_("\nFor bug reporting instructions, please see:\n"));
6858 printf ("%s.\n", bug_report_url
);
6863 /* We do not exit here. Instead we have created a fake input file
6864 called 'help-dummy' which needs to be compiled, and we pass this
6865 on the various sub-processes, along with the --help switch.
6866 Ensure their output appears after ours. */
6867 fputc ('\n', stdout
);
6873 printf (_("%s %s%s\n"), progname
, pkgversion_string
,
6875 printf ("Copyright %s 2014 Free Software Foundation, Inc.\n",
6877 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
6878 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
6883 /* We do not exit here. We use the same mechanism of --help to print
6884 the version of the sub-processes. */
6885 fputc ('\n', stdout
);
6894 fnotice (stderr
, "Target: %s\n", spec_machine
);
6895 fnotice (stderr
, "Configured with: %s\n", configuration_arguments
);
6897 #ifdef THREAD_MODEL_SPEC
6898 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6899 but there's no point in doing all this processing just to get
6900 thread_model back. */
6901 obstack_init (&obstack
);
6902 do_spec_1 (THREAD_MODEL_SPEC
, 0, thread_model
);
6903 obstack_1grow (&obstack
, '\0');
6904 thrmod
= XOBFINISH (&obstack
, const char *);
6906 thrmod
= thread_model
;
6909 fnotice (stderr
, "Thread model: %s\n", thrmod
);
6911 /* compiler_version is truncated at the first space when initialized
6912 from version string, so truncate version_string at the first space
6913 before comparing. */
6914 for (n
= 0; version_string
[n
]; n
++)
6915 if (version_string
[n
] == ' ')
6918 if (! strncmp (version_string
, compiler_version
, n
)
6919 && compiler_version
[n
] == 0)
6920 fnotice (stderr
, "gcc version %s %s\n", version_string
,
6923 fnotice (stderr
, "gcc driver version %s %sexecuting gcc version %s\n",
6924 version_string
, pkgversion_string
, compiler_version
);
6930 if (n_infiles
== added_libraries
)
6931 fatal_error ("no input files");
6936 /* Make a place to record the compiler output file names
6937 that correspond to the input files. */
6940 i
+= lang_specific_extra_outfiles
;
6941 outfiles
= XCNEWVEC (const char *, i
);
6943 /* Record which files were specified explicitly as link input. */
6945 explicit_link_files
= XCNEWVEC (char, n_infiles
);
6947 combine_inputs
= have_o
|| flag_wpa
;
6949 for (i
= 0; (int) i
< n_infiles
; i
++)
6951 const char *name
= infiles
[i
].name
;
6952 struct compiler
*compiler
= lookup_compiler (name
,
6954 infiles
[i
].language
);
6956 if (compiler
&& !(compiler
->combinable
))
6957 combine_inputs
= false;
6959 if (lang_n_infiles
> 0 && compiler
!= input_file_compiler
6960 && infiles
[i
].language
&& infiles
[i
].language
[0] != '*')
6961 infiles
[i
].incompiler
= compiler
;
6965 input_file_compiler
= compiler
;
6966 infiles
[i
].incompiler
= compiler
;
6970 /* Since there is no compiler for this input file, assume it is a
6972 explicit_link_files
[i
] = 1;
6973 infiles
[i
].incompiler
= NULL
;
6975 infiles
[i
].compiled
= false;
6976 infiles
[i
].preprocessed
= false;
6979 if (!combine_inputs
&& have_c
&& have_o
&& lang_n_infiles
> 1)
6980 fatal_error ("cannot specify -o with -c, -S or -E with multiple files");
6982 for (i
= 0; (int) i
< n_infiles
; i
++)
6984 int this_file_error
= 0;
6986 /* Tell do_spec what to substitute for %i. */
6988 input_file_number
= i
;
6989 set_input (infiles
[i
].name
);
6991 if (infiles
[i
].compiled
)
6994 /* Use the same thing in %o, unless cp->spec says otherwise. */
6996 outfiles
[i
] = gcc_input_filename
;
6998 /* Figure out which compiler from the file's suffix. */
7001 = lookup_compiler (infiles
[i
].name
, input_filename_length
,
7002 infiles
[i
].language
);
7004 if (input_file_compiler
)
7006 /* Ok, we found an applicable compiler. Run its spec. */
7008 if (input_file_compiler
->spec
[0] == '#')
7010 error ("%s: %s compiler not installed on this system",
7011 gcc_input_filename
, &input_file_compiler
->spec
[1]);
7012 this_file_error
= 1;
7018 free (debug_check_temp_file
[0]);
7019 debug_check_temp_file
[0] = NULL
;
7021 free (debug_check_temp_file
[1]);
7022 debug_check_temp_file
[1] = NULL
;
7025 value
= do_spec (input_file_compiler
->spec
);
7026 infiles
[i
].compiled
= true;
7028 this_file_error
= 1;
7029 else if (compare_debug
&& debug_check_temp_file
[0])
7032 inform (0, "recompiling with -fcompare-debug");
7034 compare_debug
= -compare_debug
;
7035 n_switches
= n_switches_debug_check
[1];
7036 n_switches_alloc
= n_switches_alloc_debug_check
[1];
7037 switches
= switches_debug_check
[1];
7039 value
= do_spec (input_file_compiler
->spec
);
7041 compare_debug
= -compare_debug
;
7042 n_switches
= n_switches_debug_check
[0];
7043 n_switches_alloc
= n_switches_alloc_debug_check
[0];
7044 switches
= switches_debug_check
[0];
7048 error ("during -fcompare-debug recompilation");
7049 this_file_error
= 1;
7052 gcc_assert (debug_check_temp_file
[1]
7053 && filename_cmp (debug_check_temp_file
[0],
7054 debug_check_temp_file
[1]));
7057 inform (0, "comparing final insns dumps");
7059 if (compare_files (debug_check_temp_file
))
7060 this_file_error
= 1;
7065 free (debug_check_temp_file
[0]);
7066 debug_check_temp_file
[0] = NULL
;
7068 free (debug_check_temp_file
[1]);
7069 debug_check_temp_file
[1] = NULL
;
7074 /* If this file's name does not contain a recognized suffix,
7075 record it as explicit linker input. */
7078 explicit_link_files
[i
] = 1;
7080 /* Clear the delete-on-failure queue, deleting the files in it
7081 if this compilation failed. */
7083 if (this_file_error
)
7085 delete_failure_queue ();
7088 /* If this compilation succeeded, don't delete those files later. */
7089 clear_failure_queue ();
7092 /* Reset the input file name to the first compile/object file name, for use
7093 with %b in LINK_SPEC. We use the first input file that we can find
7094 a compiler to compile it instead of using infiles.language since for
7095 languages other than C we use aliases that we then lookup later. */
7100 for (i
= 0; i
< n_infiles
; i
++)
7101 if (infiles
[i
].incompiler
7102 || (infiles
[i
].language
&& infiles
[i
].language
[0] != '*'))
7104 set_input (infiles
[i
].name
);
7111 /* Make sure INPUT_FILE_NUMBER points to first available open
7113 input_file_number
= n_infiles
;
7114 if (lang_specific_pre_link ())
7118 /* Determine if there are any linker input files. */
7119 num_linker_inputs
= 0;
7120 for (i
= 0; (int) i
< n_infiles
; i
++)
7121 if (explicit_link_files
[i
] || outfiles
[i
] != NULL
)
7122 num_linker_inputs
++;
7124 /* Run ld to link all the compiler output files. */
7126 if (num_linker_inputs
> 0 && !seen_error () && print_subprocess_help
< 2)
7128 int tmp
= execution_count
;
7132 #if HAVE_LTO_PLUGIN > 0
7133 #if HAVE_LTO_PLUGIN == 2
7134 const char *fno_use_linker_plugin
= "fno-use-linker-plugin";
7136 const char *fuse_linker_plugin
= "fuse-linker-plugin";
7140 /* We'll use ld if we can't find collect2. */
7141 if (! strcmp (linker_name_spec
, "collect2"))
7143 char *s
= find_a_file (&exec_prefixes
, "collect2", X_OK
, false);
7145 linker_name_spec
= "ld";
7148 #if HAVE_LTO_PLUGIN > 0
7149 #if HAVE_LTO_PLUGIN == 2
7150 if (!switch_matches (fno_use_linker_plugin
,
7151 fno_use_linker_plugin
7152 + strlen (fno_use_linker_plugin
), 0))
7154 if (switch_matches (fuse_linker_plugin
,
7156 + strlen (fuse_linker_plugin
), 0))
7159 char *temp_spec
= find_a_file (&exec_prefixes
,
7160 LTOPLUGINSONAME
, R_OK
,
7163 fatal_error ("-fuse-linker-plugin, but %s not found",
7165 linker_plugin_file_spec
= convert_white_space (temp_spec
);
7168 lto_gcc_spec
= argv
[0];
7171 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
7173 putenv_from_prefixes (&exec_prefixes
, "COMPILER_PATH", false);
7174 putenv_from_prefixes (&startfile_prefixes
, LIBRARY_PATH_ENV
, true);
7176 if (print_subprocess_help
== 1)
7178 printf (_("\nLinker options\n==============\n\n"));
7179 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
7180 " to the linker.\n\n"));
7183 value
= do_spec (link_command_spec
);
7186 linker_was_run
= (tmp
!= execution_count
);
7189 /* If options said don't run linker,
7190 complain about input files to be given to the linker. */
7192 if (! linker_was_run
&& !seen_error ())
7193 for (i
= 0; (int) i
< n_infiles
; i
++)
7194 if (explicit_link_files
[i
]
7195 && !(infiles
[i
].language
&& infiles
[i
].language
[0] == '*'))
7196 warning (0, "%s: linker input file unused because linking not done",
7199 /* Delete some or all of the temporary files we made. */
7202 delete_failure_queue ();
7203 delete_temp_files ();
7205 if (print_help_list
)
7207 printf (("\nFor bug reporting instructions, please see:\n"));
7208 printf ("%s\n", bug_report_url
);
7212 return (signal_count
!= 0 ? 2
7213 : seen_error () ? (pass_exit_codes
? greatest_status
: 1)
7217 /* Find the proper compilation spec for the file name NAME,
7218 whose length is LENGTH. LANGUAGE is the specified language,
7219 or 0 if this file is to be passed to the linker. */
7221 static struct compiler
*
7222 lookup_compiler (const char *name
, size_t length
, const char *language
)
7224 struct compiler
*cp
;
7226 /* If this was specified by the user to be a linker input, indicate that. */
7227 if (language
!= 0 && language
[0] == '*')
7230 /* Otherwise, look for the language, if one is spec'd. */
7233 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7234 if (cp
->suffix
[0] == '@' && !strcmp (cp
->suffix
+ 1, language
))
7237 error ("language %s not recognized", language
);
7241 /* Look for a suffix. */
7242 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7244 if (/* The suffix `-' matches only the file name `-'. */
7245 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
7246 || (strlen (cp
->suffix
) < length
7247 /* See if the suffix matches the end of NAME. */
7248 && !strcmp (cp
->suffix
,
7249 name
+ length
- strlen (cp
->suffix
))
7254 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
7255 /* Look again, but case-insensitively this time. */
7257 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7259 if (/* The suffix `-' matches only the file name `-'. */
7260 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
7261 || (strlen (cp
->suffix
) < length
7262 /* See if the suffix matches the end of NAME. */
7263 && ((!strcmp (cp
->suffix
,
7264 name
+ length
- strlen (cp
->suffix
))
7265 || !strpbrk (cp
->suffix
, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
7266 && !strcasecmp (cp
->suffix
,
7267 name
+ length
- strlen (cp
->suffix
)))
7273 if (cp
>= compilers
)
7275 if (cp
->spec
[0] != '@')
7276 /* A non-alias entry: return it. */
7279 /* An alias entry maps a suffix to a language.
7280 Search for the language; pass 0 for NAME and LENGTH
7281 to avoid infinite recursion if language not found. */
7282 return lookup_compiler (NULL
, 0, cp
->spec
+ 1);
7288 save_string (const char *s
, int len
)
7290 char *result
= XNEWVEC (char, len
+ 1);
7292 memcpy (result
, s
, len
);
7298 pfatal_with_name (const char *name
)
7300 perror_with_name (name
);
7301 delete_temp_files ();
7306 perror_with_name (const char *name
)
7308 error ("%s: %m", name
);
7312 validate_switches_from_spec (const char *spec
, bool user
)
7314 const char *p
= spec
;
7317 if (c
== '%' && (*p
== '{' || *p
== '<' || (*p
== 'W' && *++p
== '{')))
7318 /* We have a switch spec. */
7319 p
= validate_switches (p
+ 1, user
);
7323 validate_all_switches (void)
7325 struct compiler
*comp
;
7326 struct spec_list
*spec
;
7328 for (comp
= compilers
; comp
->spec
; comp
++)
7329 validate_switches_from_spec (comp
->spec
, false);
7331 /* Look through the linked list of specs read from the specs file. */
7332 for (spec
= specs
; spec
; spec
= spec
->next
)
7333 validate_switches_from_spec (*spec
->ptr_spec
, spec
->user_p
);
7335 validate_switches_from_spec (link_command_spec
, false);
7338 /* Look at the switch-name that comes after START
7339 and mark as valid all supplied switches that match it. */
7342 validate_switches (const char *start
, bool user_spec
)
7344 const char *p
= start
;
7348 bool suffix
= false;
7349 bool starred
= false;
7351 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7360 if (*p
== '.' || *p
== ',')
7364 while (ISIDNUM (*p
) || *p
== '-' || *p
== '+' || *p
== '='
7365 || *p
== ',' || *p
== '.' || *p
== '@')
7370 starred
= true, p
++;
7376 /* Mark all matching switches as valid. */
7377 for (i
= 0; i
< n_switches
; i
++)
7378 if (!strncmp (switches
[i
].part1
, atom
, len
)
7379 && (starred
|| switches
[i
].part1
[len
] == '\0')
7380 && (switches
[i
].known
|| user_spec
))
7381 switches
[i
].validated
= true;
7385 if (*p
&& (p
[-1] == '|' || p
[-1] == '&'))
7388 if (*p
&& p
[-1] == ':')
7390 while (*p
&& *p
!= ';' && *p
!= '}')
7395 if (*p
== '{' || *p
== '<')
7396 p
= validate_switches (p
+1, user_spec
);
7397 else if (p
[0] == 'W' && p
[1] == '{')
7398 p
= validate_switches (p
+2, user_spec
);
7405 if (*p
&& p
[-1] == ';')
7419 static struct mdswitchstr
*mdswitches
;
7420 static int n_mdswitches
;
7422 /* Check whether a particular argument was used. The first time we
7423 canonicalize the switches to keep only the ones we care about. */
7426 used_arg (const char *p
, int len
)
7431 const char *replace
;
7436 static struct mswitchstr
*mswitches
;
7437 static int n_mswitches
;
7442 struct mswitchstr
*matches
;
7446 /* Break multilib_matches into the component strings of string
7447 and replacement string. */
7448 for (q
= multilib_matches
; *q
!= '\0'; q
++)
7453 = (struct mswitchstr
*) alloca ((sizeof (struct mswitchstr
)) * cnt
);
7455 q
= multilib_matches
;
7464 fatal_error ("multilib spec %qs is invalid",
7469 matches
[i
].len
= q
- matches
[i
].str
;
7471 matches
[i
].replace
= ++q
;
7472 while (*q
!= ';' && *q
!= '\0')
7475 goto invalid_matches
;
7478 matches
[i
].rep_len
= q
- matches
[i
].replace
;
7484 /* Now build a list of the replacement string for switches that we care
7485 about. Make sure we allocate at least one entry. This prevents
7486 xmalloc from calling fatal, and prevents us from re-executing this
7489 = XNEWVEC (struct mswitchstr
, n_mdswitches
+ (n_switches
? n_switches
: 1));
7490 for (i
= 0; i
< n_switches
; i
++)
7491 if ((switches
[i
].live_cond
& SWITCH_IGNORE
) == 0)
7493 int xlen
= strlen (switches
[i
].part1
);
7494 for (j
= 0; j
< cnt
; j
++)
7495 if (xlen
== matches
[j
].len
7496 && ! strncmp (switches
[i
].part1
, matches
[j
].str
, xlen
))
7498 mswitches
[n_mswitches
].str
= matches
[j
].replace
;
7499 mswitches
[n_mswitches
].len
= matches
[j
].rep_len
;
7500 mswitches
[n_mswitches
].replace
= (char *) 0;
7501 mswitches
[n_mswitches
].rep_len
= 0;
7507 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7508 on the command line nor any options mutually incompatible with
7510 for (i
= 0; i
< n_mdswitches
; i
++)
7514 for (q
= multilib_options
; *q
!= '\0'; q
++)
7520 while (strncmp (q
, mdswitches
[i
].str
, mdswitches
[i
].len
) != 0
7521 || strchr (" /", q
[mdswitches
[i
].len
]) == NULL
)
7523 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
7530 if (*q
!= ' ' && *q
!= '\0')
7532 while (*r
!= ' ' && *r
!= '\0')
7535 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
7538 if (used_arg (r
, q
- r
))
7543 mswitches
[n_mswitches
].str
= mdswitches
[i
].str
;
7544 mswitches
[n_mswitches
].len
= mdswitches
[i
].len
;
7545 mswitches
[n_mswitches
].replace
= (char *) 0;
7546 mswitches
[n_mswitches
].rep_len
= 0;
7559 for (i
= 0; i
< n_mswitches
; i
++)
7560 if (len
== mswitches
[i
].len
&& ! strncmp (p
, mswitches
[i
].str
, len
))
7567 default_arg (const char *p
, int len
)
7571 for (i
= 0; i
< n_mdswitches
; i
++)
7572 if (len
== mdswitches
[i
].len
&& ! strncmp (p
, mdswitches
[i
].str
, len
))
7578 /* Work out the subdirectory to use based on the options. The format of
7579 multilib_select is a list of elements. Each element is a subdirectory
7580 name followed by a list of options followed by a semicolon. The format
7581 of multilib_exclusions is the same, but without the preceding
7582 directory. First gcc will check the exclusions, if none of the options
7583 beginning with an exclamation point are present, and all of the other
7584 options are present, then we will ignore this completely. Passing
7585 that, gcc will consider each multilib_select in turn using the same
7586 rules for matching the options. If a match is found, that subdirectory
7588 A subdirectory name is optionally followed by a colon and the corresponding
7592 set_multilib_dir (void)
7595 unsigned int this_path_len
;
7596 const char *this_path
, *this_arg
;
7597 const char *start
, *end
;
7599 int ok
, ndfltok
, first
;
7602 start
= multilib_defaults
;
7603 while (*start
== ' ' || *start
== '\t')
7605 while (*start
!= '\0')
7608 while (*start
!= ' ' && *start
!= '\t' && *start
!= '\0')
7610 while (*start
== ' ' || *start
== '\t')
7618 mdswitches
= XNEWVEC (struct mdswitchstr
, n_mdswitches
);
7619 for (start
= multilib_defaults
; *start
!= '\0'; start
= end
+ 1)
7621 while (*start
== ' ' || *start
== '\t')
7627 for (end
= start
+ 1;
7628 *end
!= ' ' && *end
!= '\t' && *end
!= '\0'; end
++)
7631 obstack_grow (&multilib_obstack
, start
, end
- start
);
7632 obstack_1grow (&multilib_obstack
, 0);
7633 mdswitches
[i
].str
= XOBFINISH (&multilib_obstack
, const char *);
7634 mdswitches
[i
++].len
= end
- start
;
7641 p
= multilib_exclusions
;
7644 /* Ignore newlines. */
7651 /* Check the arguments. */
7658 fatal_error ("multilib exclusions %qs is invalid",
7659 multilib_exclusions
);
7669 while (*p
!= ' ' && *p
!= ';')
7672 goto invalid_exclusions
;
7676 if (*this_arg
!= '!')
7684 ok
= used_arg (this_arg
, p
- this_arg
);
7699 p
= multilib_select
;
7701 /* Append multilib reuse rules if any. With those rules, we can reuse
7702 one multilib for certain different options sets. */
7703 if (strlen (multilib_reuse
) > 0)
7704 p
= concat (p
, multilib_reuse
, NULL
);
7708 /* Ignore newlines. */
7715 /* Get the initial path. */
7722 fatal_error ("multilib select %qs %qs is invalid",
7723 multilib_select
, multilib_reuse
);
7727 this_path_len
= p
- this_path
;
7729 /* Check the arguments. */
7736 goto invalid_select
;
7745 while (*p
!= ' ' && *p
!= ';')
7748 goto invalid_select
;
7752 if (*this_arg
!= '!')
7760 /* If this is a default argument, we can just ignore it.
7761 This is true even if this_arg begins with '!'. Beginning
7762 with '!' does not mean that this argument is necessarily
7763 inappropriate for this library: it merely means that
7764 there is a more specific library which uses this
7765 argument. If this argument is a default, we need not
7766 consider that more specific library. */
7767 ok
= used_arg (this_arg
, p
- this_arg
);
7774 if (default_arg (this_arg
, p
- this_arg
))
7783 if (this_path_len
!= 1
7784 || this_path
[0] != '.')
7786 char *new_multilib_dir
= XNEWVEC (char, this_path_len
+ 1);
7789 strncpy (new_multilib_dir
, this_path
, this_path_len
);
7790 new_multilib_dir
[this_path_len
] = '\0';
7791 q
= strchr (new_multilib_dir
, ':');
7794 multilib_dir
= new_multilib_dir
;
7801 const char *q
= this_path
, *end
= this_path
+ this_path_len
;
7803 while (q
< end
&& *q
!= ':')
7807 const char *q2
= q
+ 1, *ml_end
= end
;
7808 char *new_multilib_os_dir
;
7810 while (q2
< end
&& *q2
!= ':')
7814 new_multilib_os_dir
= XNEWVEC (char, ml_end
- q
);
7815 memcpy (new_multilib_os_dir
, q
+ 1, ml_end
- q
- 1);
7816 new_multilib_os_dir
[ml_end
- q
- 1] = '\0';
7817 multilib_os_dir
= *new_multilib_os_dir
? new_multilib_os_dir
: ".";
7819 if (q2
< end
&& *q2
== ':')
7821 char *new_multiarch_dir
= XNEWVEC (char, end
- q2
);
7822 memcpy (new_multiarch_dir
, q2
+ 1, end
- q2
- 1);
7823 new_multiarch_dir
[end
- q2
- 1] = '\0';
7824 multiarch_dir
= new_multiarch_dir
;
7833 if (multilib_dir
== NULL
&& multilib_os_dir
!= NULL
7834 && strcmp (multilib_os_dir
, ".") == 0)
7836 free (CONST_CAST (char *, multilib_os_dir
));
7837 multilib_os_dir
= NULL
;
7839 else if (multilib_dir
!= NULL
&& multilib_os_dir
== NULL
)
7840 multilib_os_dir
= multilib_dir
;
7843 /* Print out the multiple library subdirectory selection
7844 information. This prints out a series of lines. Each line looks
7845 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7846 required. Only the desired options are printed out, the negative
7847 matches. The options are print without a leading dash. There are
7848 no spaces to make it easy to use the information in the shell.
7849 Each subdirectory is printed only once. This assumes the ordering
7850 generated by the genmultilib script. Also, we leave out ones that match
7854 print_multilib_info (void)
7856 const char *p
= multilib_select
;
7857 const char *last_path
= 0, *this_path
;
7859 unsigned int last_path_len
= 0;
7864 /* Ignore newlines. */
7871 /* Get the initial path. */
7878 fatal_error ("multilib select %qs is invalid", multilib_select
);
7884 /* When --disable-multilib was used but target defines
7885 MULTILIB_OSDIRNAMES, entries starting with .: (and not starting
7886 with .:: for multiarch configurations) are there just to find
7887 multilib_os_dir, so skip them from output. */
7888 if (this_path
[0] == '.' && this_path
[1] == ':' && this_path
[2] != ':')
7891 /* Check for matches with the multilib_exclusions. We don't bother
7892 with the '!' in either list. If any of the exclusion rules match
7893 all of its options with the select rule, we skip it. */
7895 const char *e
= multilib_exclusions
;
7896 const char *this_arg
;
7901 /* Ignore newlines. */
7908 /* Check the arguments. */
7917 fatal_error ("multilib exclusion %qs is invalid",
7918 multilib_exclusions
);
7929 while (*e
!= ' ' && *e
!= ';')
7932 goto invalid_exclusion
;
7940 int len
= e
- this_arg
;
7943 goto invalid_select
;
7947 while (*q
!= ' ' && *q
!= ';')
7950 goto invalid_select
;
7954 if (! strncmp (arg
, this_arg
,
7955 (len
< q
- arg
) ? q
- arg
: len
)
7956 || default_arg (this_arg
, e
- this_arg
))
7986 /* If this is a duplicate, skip it. */
7987 skip
= (last_path
!= 0
7988 && (unsigned int) (p
- this_path
) == last_path_len
7989 && ! filename_ncmp (last_path
, this_path
, last_path_len
));
7991 last_path
= this_path
;
7992 last_path_len
= p
- this_path
;
7995 /* If this directory requires any default arguments, we can skip
7996 it. We will already have printed a directory identical to
7997 this one which does not require that default argument. */
8008 goto invalid_select
;
8015 while (*q
!= ' ' && *q
!= ';')
8018 goto invalid_select
;
8023 && default_arg (arg
, q
- arg
))
8038 for (p1
= last_path
; p1
< p
&& *p1
!= ':'; p1
++)
8049 goto invalid_select
;
8057 use_arg
= *p
!= '!';
8062 while (*p
!= ' ' && *p
!= ';')
8065 goto invalid_select
;
8077 /* If there are extra options, print them now. */
8078 if (multilib_extra
&& *multilib_extra
)
8080 int print_at
= TRUE
;
8083 for (q
= multilib_extra
; *q
!= '\0'; q
++)
8104 /* getenv built-in spec function.
8106 Returns the value of the environment variable given by its first
8107 argument, concatenated with the second argument. If the
8108 environment variable is not defined, a fatal error is issued. */
8111 getenv_spec_function (int argc
, const char **argv
)
8121 value
= getenv (argv
[0]);
8123 fatal_error ("environment variable %qs not defined", argv
[0]);
8125 /* We have to escape every character of the environment variable so
8126 they are not interpreted as active spec characters. A
8127 particularly painful case is when we are reading a variable
8128 holding a windows path complete with \ separators. */
8129 len
= strlen (value
) * 2 + strlen (argv
[1]) + 1;
8130 result
= XNEWVAR (char, len
);
8131 for (ptr
= result
; *value
; ptr
+= 2)
8137 strcpy (ptr
, argv
[1]);
8142 /* if-exists built-in spec function.
8144 Checks to see if the file specified by the absolute pathname in
8145 ARGS exists. Returns that pathname if found.
8147 The usual use for this function is to check for a library file
8148 (whose name has been expanded with %s). */
8151 if_exists_spec_function (int argc
, const char **argv
)
8153 /* Must have only one argument. */
8154 if (argc
== 1 && IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
8160 /* if-exists-else built-in spec function.
8162 This is like if-exists, but takes an additional argument which
8163 is returned if the first argument does not exist. */
8166 if_exists_else_spec_function (int argc
, const char **argv
)
8168 /* Must have exactly two arguments. */
8172 if (IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
8178 /* sanitize built-in spec function.
8180 This returns non-NULL, if sanitizing address, thread or
8181 any of the undefined behavior sanitizers. */
8184 sanitize_spec_function (int argc
, const char **argv
)
8189 if (strcmp (argv
[0], "address") == 0)
8190 return (flag_sanitize
& SANITIZE_ADDRESS
) ? "" : NULL
;
8191 if (strcmp (argv
[0], "thread") == 0)
8192 return (flag_sanitize
& SANITIZE_THREAD
) ? "" : NULL
;
8193 if (strcmp (argv
[0], "undefined") == 0)
8194 return (flag_sanitize
& SANITIZE_UNDEFINED
) ? "" : NULL
;
8195 if (strcmp (argv
[0], "leak") == 0)
8196 return ((flag_sanitize
8197 & (SANITIZE_ADDRESS
| SANITIZE_LEAK
| SANITIZE_THREAD
))
8198 == SANITIZE_LEAK
) ? "" : NULL
;
8202 /* replace-outfile built-in spec function.
8204 This looks for the first argument in the outfiles array's name and
8205 replaces it with the second argument. */
8208 replace_outfile_spec_function (int argc
, const char **argv
)
8211 /* Must have exactly two arguments. */
8215 for (i
= 0; i
< n_infiles
; i
++)
8217 if (outfiles
[i
] && !filename_cmp (outfiles
[i
], argv
[0]))
8218 outfiles
[i
] = xstrdup (argv
[1]);
8223 /* remove-outfile built-in spec function.
8225 * This looks for the first argument in the outfiles array's name and
8229 remove_outfile_spec_function (int argc
, const char **argv
)
8232 /* Must have exactly one argument. */
8236 for (i
= 0; i
< n_infiles
; i
++)
8238 if (outfiles
[i
] && !filename_cmp (outfiles
[i
], argv
[0]))
8244 /* Given two version numbers, compares the two numbers.
8245 A version number must match the regular expression
8246 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
8249 compare_version_strings (const char *v1
, const char *v2
)
8254 if (regcomp (&r
, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
8255 REG_EXTENDED
| REG_NOSUB
) != 0)
8257 rresult
= regexec (&r
, v1
, 0, NULL
, 0);
8258 if (rresult
== REG_NOMATCH
)
8259 fatal_error ("invalid version number %qs", v1
);
8260 else if (rresult
!= 0)
8262 rresult
= regexec (&r
, v2
, 0, NULL
, 0);
8263 if (rresult
== REG_NOMATCH
)
8264 fatal_error ("invalid version number %qs", v2
);
8265 else if (rresult
!= 0)
8268 return strverscmp (v1
, v2
);
8272 /* version_compare built-in spec function.
8274 This takes an argument of the following form:
8276 <comparison-op> <arg1> [<arg2>] <switch> <result>
8278 and produces "result" if the comparison evaluates to true,
8279 and nothing if it doesn't.
8281 The supported <comparison-op> values are:
8283 >= true if switch is a later (or same) version than arg1
8285 < true if switch is an earlier version than arg1
8287 >< true if switch is arg1 or later, and earlier than arg2
8288 <> true if switch is earlier than arg1 or is arg2 or later
8290 If the switch is not present, the condition is false unless
8291 the first character of the <comparison-op> is '!'.
8294 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
8295 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
8298 version_compare_spec_function (int argc
, const char **argv
)
8302 const char *switch_value
= NULL
;
8307 fatal_error ("too few arguments to %%:version-compare");
8308 if (argv
[0][0] == '\0')
8310 if ((argv
[0][1] == '<' || argv
[0][1] == '>') && argv
[0][0] != '!')
8312 if (argc
!= nargs
+ 3)
8313 fatal_error ("too many arguments to %%:version-compare");
8315 switch_len
= strlen (argv
[nargs
+ 1]);
8316 for (i
= 0; i
< n_switches
; i
++)
8317 if (!strncmp (switches
[i
].part1
, argv
[nargs
+ 1], switch_len
)
8318 && check_live_switch (i
, switch_len
))
8319 switch_value
= switches
[i
].part1
+ switch_len
;
8321 if (switch_value
== NULL
)
8325 comp1
= compare_version_strings (switch_value
, argv
[1]);
8327 comp2
= compare_version_strings (switch_value
, argv
[2]);
8329 comp2
= -1; /* This value unused. */
8332 switch (argv
[0][0] << 8 | argv
[0][1])
8334 case '>' << 8 | '=':
8335 result
= comp1
>= 0;
8337 case '!' << 8 | '<':
8338 result
= comp1
>= 0 || switch_value
== NULL
;
8343 case '!' << 8 | '>':
8344 result
= comp1
< 0 || switch_value
== NULL
;
8346 case '>' << 8 | '<':
8347 result
= comp1
>= 0 && comp2
< 0;
8349 case '<' << 8 | '>':
8350 result
= comp1
< 0 || comp2
>= 0;
8354 fatal_error ("unknown operator %qs in %%:version-compare", argv
[0]);
8359 return argv
[nargs
+ 2];
8362 /* %:include builtin spec function. This differs from %include in that it
8363 can be nested inside a spec, and thus be conditionalized. It takes
8364 one argument, the filename, and looks for it in the startfile path.
8365 The result is always NULL, i.e. an empty expansion. */
8368 include_spec_function (int argc
, const char **argv
)
8375 file
= find_a_file (&startfile_prefixes
, argv
[0], R_OK
, true);
8376 read_specs (file
? file
: argv
[0], false, false);
8381 /* %:find-file spec function. This function replaces its argument by
8382 the file found through find_file, that is the -print-file-name gcc
8385 find_file_spec_function (int argc
, const char **argv
)
8392 file
= find_file (argv
[0]);
8397 /* %:find-plugindir spec function. This function replaces its argument
8398 by the -iplugindir=<dir> option. `dir' is found through find_file, that
8399 is the -print-file-name gcc program option. */
8401 find_plugindir_spec_function (int argc
, const char **argv ATTRIBUTE_UNUSED
)
8408 option
= concat ("-iplugindir=", find_file ("plugin"), NULL
);
8413 /* %:print-asm-header spec function. Print a banner to say that the
8414 following output is from the assembler. */
8417 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED
,
8418 const char **argv ATTRIBUTE_UNUSED
)
8420 printf (_("Assembler options\n=================\n\n"));
8421 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
8426 /* Get a random number for -frandom-seed */
8428 static unsigned HOST_WIDE_INT
8429 get_random_number (void)
8431 unsigned HOST_WIDE_INT ret
= 0;
8434 fd
= open ("/dev/urandom", O_RDONLY
);
8437 read (fd
, &ret
, sizeof (HOST_WIDE_INT
));
8443 /* Get some more or less random data. */
8444 #ifdef HAVE_GETTIMEOFDAY
8448 gettimeofday (&tv
, NULL
);
8449 ret
= tv
.tv_sec
* 1000 + tv
.tv_usec
/ 1000;
8453 time_t now
= time (NULL
);
8455 if (now
!= (time_t)-1)
8456 ret
= (unsigned) now
;
8460 return ret
^ getpid ();
8463 /* %:compare-debug-dump-opt spec function. Save the last argument,
8464 expected to be the last -fdump-final-insns option, or generate a
8468 compare_debug_dump_opt_spec_function (int arg
,
8469 const char **argv ATTRIBUTE_UNUSED
)
8474 static char random_seed
[HOST_BITS_PER_WIDE_INT
/ 4 + 3];
8477 fatal_error ("too many arguments to %%:compare-debug-dump-opt");
8479 do_spec_2 ("%{fdump-final-insns=*:%*}");
8480 do_spec_1 (" ", 0, NULL
);
8482 if (argbuf
.length () > 0
8483 && strcmp (argv
[argbuf
.length () - 1], "."))
8488 name
= xstrdup (argv
[argbuf
.length () - 1]);
8493 const char *ext
= NULL
;
8495 if (argbuf
.length () > 0)
8497 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
8500 else if (!compare_debug
)
8503 do_spec_2 ("%g.gkd");
8505 do_spec_1 (" ", 0, NULL
);
8507 gcc_assert (argbuf
.length () > 0);
8509 name
= concat (argbuf
.last (), ext
, NULL
);
8511 ret
= concat ("-fdump-final-insns=", name
, NULL
);
8514 which
= compare_debug
< 0;
8515 debug_check_temp_file
[which
] = name
;
8519 unsigned HOST_WIDE_INT value
= get_random_number ();
8521 sprintf (random_seed
, HOST_WIDE_INT_PRINT_HEX
, value
);
8527 ret
= concat ("%{!frandom-seed=*:-frandom-seed=", random_seed
, "} ",
8538 static const char *debug_auxbase_opt
;
8540 /* %:compare-debug-self-opt spec function. Expands to the options
8541 that are to be passed in the second compilation of
8545 compare_debug_self_opt_spec_function (int arg
,
8546 const char **argv ATTRIBUTE_UNUSED
)
8549 fatal_error ("too many arguments to %%:compare-debug-self-opt");
8551 if (compare_debug
>= 0)
8554 do_spec_2 ("%{c|S:%{o*:%*}}");
8555 do_spec_1 (" ", 0, NULL
);
8557 if (argbuf
.length () > 0)
8558 debug_auxbase_opt
= concat ("-auxbase-strip ",
8562 debug_auxbase_opt
= NULL
;
8565 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
8566 %<fdump-final-insns=* -w -S -o %j \
8567 %{!fcompare-debug-second:-fcompare-debug-second} \
8568 ", compare_debug_opt
, NULL
);
8571 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
8572 options that are to be passed in the second compilation of
8573 compare-debug. It expects, as an argument, the basename of the
8574 current input file name, with the .gk suffix appended to it. */
8577 compare_debug_auxbase_opt_spec_function (int arg
,
8584 fatal_error ("too few arguments to %%:compare-debug-auxbase-opt");
8587 fatal_error ("too many arguments to %%:compare-debug-auxbase-opt");
8589 if (compare_debug
>= 0)
8592 len
= strlen (argv
[0]);
8593 if (len
< 3 || strcmp (argv
[0] + len
- 3, ".gk") != 0)
8594 fatal_error ("argument to %%:compare-debug-auxbase-opt "
8595 "does not end in .gk");
8597 if (debug_auxbase_opt
)
8598 return debug_auxbase_opt
;
8600 #define OPT "-auxbase "
8603 name
= (char*) xmalloc (sizeof (OPT
) + len
);
8604 memcpy (name
, OPT
, sizeof (OPT
) - 1);
8605 memcpy (name
+ sizeof (OPT
) - 1, argv
[0], len
);
8606 name
[sizeof (OPT
) - 1 + len
] = '\0';
8613 /* %:pass-through-libs spec function. Finds all -l options and input
8614 file names in the lib spec passed to it, and makes a list of them
8615 prepended with the plugin option to cause them to be passed through
8616 to the final link after all the new object files have been added. */
8619 pass_through_libs_spec_func (int argc
, const char **argv
)
8621 char *prepended
= xstrdup (" ");
8623 /* Shlemiel the painter's algorithm. Innately horrible, but at least
8624 we know that there will never be more than a handful of strings to
8625 concat, and it's only once per run, so it's not worth optimising. */
8626 for (n
= 0; n
< argc
; n
++)
8628 char *old
= prepended
;
8629 /* Anything that isn't an option is a full path to an output
8630 file; pass it through if it ends in '.a'. Among options,
8632 if (argv
[n
][0] == '-' && argv
[n
][1] == 'l')
8634 const char *lopt
= argv
[n
] + 2;
8635 /* Handle both joined and non-joined -l options. If for any
8636 reason there's a trailing -l with no joined or following
8637 arg just discard it. */
8638 if (!*lopt
&& ++n
>= argc
)
8642 prepended
= concat (prepended
, "-plugin-opt=-pass-through=-l",
8645 else if (!strcmp (".a", argv
[n
] + strlen (argv
[n
]) - 2))
8647 prepended
= concat (prepended
, "-plugin-opt=-pass-through=",
8648 argv
[n
], " ", NULL
);
8650 if (prepended
!= old
)
8656 /* %:replace-extension spec function. Replaces the extension of the
8657 first argument with the second argument. */
8660 replace_extension_spec_func (int argc
, const char **argv
)
8668 fatal_error ("too few arguments to %%:replace-extension");
8670 name
= xstrdup (argv
[0]);
8672 for (i
= strlen (name
) - 1; i
>= 0; i
--)
8673 if (IS_DIR_SEPARATOR (name
[i
]))
8676 p
= strrchr (name
+ i
+ 1, '.');
8680 result
= concat (name
, argv
[1], NULL
);
8686 /* Insert backslash before spaces in ORIG (usually a file path), to
8687 avoid being broken by spec parser.
8689 This function is needed as do_spec_1 treats white space (' ' and '\t')
8690 as the end of an argument. But in case of -plugin /usr/gcc install/xxx.so,
8691 the file name should be treated as a single argument rather than being
8692 broken into multiple. Solution is to insert '\\' before the space in a
8695 This function converts and only converts all occurrence of ' '
8696 to '\\' + ' ' and '\t' to '\\' + '\t'. For example:
8700 "a\\ b" -> "a\\\\ b"
8702 orig: input null-terminating string that was allocated by xalloc. The
8703 memory it points to might be freed in this function. Behavior undefined
8704 if ORIG wasn't xalloced or was freed already at entry.
8706 Return: ORIG if no conversion needed. Otherwise a newly allocated string
8707 that was converted from ORIG. */
8710 convert_white_space (char *orig
)
8712 int len
, number_of_space
= 0;
8714 for (len
= 0; orig
[len
]; len
++)
8715 if (orig
[len
] == ' ' || orig
[len
] == '\t') number_of_space
++;
8717 if (number_of_space
)
8719 char *new_spec
= (char *) xmalloc (len
+ number_of_space
+ 1);
8721 for (j
= 0, k
= 0; j
<= len
; j
++, k
++)
8723 if (orig
[j
] == ' ' || orig
[j
] == '\t')
8724 new_spec
[k
++] = '\\';
8725 new_spec
[k
] = orig
[j
];