1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987-2013 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 /* Whether we should report subprocess execution times to a file. */
110 FILE *report_times_to_file
= NULL
;
112 /* Nonzero means place this string before uses of /, so that include
113 and library files can be found in an alternate location. */
115 #ifdef TARGET_SYSTEM_ROOT
116 static const char *target_system_root
= TARGET_SYSTEM_ROOT
;
118 static const char *target_system_root
= 0;
121 /* Nonzero means pass the updated target_system_root to the compiler. */
123 static int target_system_root_changed
;
125 /* Nonzero means append this string to target_system_root. */
127 static const char *target_sysroot_suffix
= 0;
129 /* Nonzero means append this string to target_system_root for headers. */
131 static const char *target_sysroot_hdrs_suffix
= 0;
133 /* Nonzero means write "temp" files in source directory
134 and use the source file's name in them, and don't delete them. */
136 static enum save_temps
{
137 SAVE_TEMPS_NONE
, /* no -save-temps */
138 SAVE_TEMPS_CWD
, /* -save-temps in current directory */
139 SAVE_TEMPS_OBJ
/* -save-temps in object directory */
142 /* Output file to use to get the object directory for -save-temps=obj */
143 static char *save_temps_prefix
= 0;
144 static size_t save_temps_length
= 0;
146 /* The compiler version. */
148 static const char *compiler_version
;
150 /* The target version. */
152 static const char *const spec_version
= DEFAULT_TARGET_VERSION
;
154 /* The target machine. */
156 static const char *spec_machine
= DEFAULT_TARGET_MACHINE
;
158 /* Nonzero if cross-compiling.
159 When -b is used, the value comes from the `specs' file. */
161 #ifdef CROSS_DIRECTORY_STRUCTURE
162 static const char *cross_compile
= "1";
164 static const char *cross_compile
= "0";
167 /* Greatest exit code of sub-processes that has been encountered up to
169 static int greatest_status
= 1;
171 /* This is the obstack which we use to allocate many strings. */
173 static struct obstack obstack
;
175 /* This is the obstack to build an environment variable to pass to
176 collect2 that describes all of the relevant switches of what to
177 pass the compiler in building the list of pointers to constructors
180 static struct obstack collect_obstack
;
182 /* Forward declaration for prototypes. */
186 static void init_spec (void);
187 static void store_arg (const char *, int, int);
188 static void insert_wrapper (const char *);
189 static char *load_specs (const char *);
190 static void read_specs (const char *, bool, bool);
191 static void set_spec (const char *, const char *, bool);
192 static struct compiler
*lookup_compiler (const char *, size_t, const char *);
193 static char *build_search_list (const struct path_prefix
*, const char *,
195 static void xputenv (const char *);
196 static void putenv_from_prefixes (const struct path_prefix
*, const char *,
198 static int access_check (const char *, int);
199 static char *find_a_file (const struct path_prefix
*, const char *, int, bool);
200 static void add_prefix (struct path_prefix
*, const char *, const char *,
202 static void add_sysrooted_prefix (struct path_prefix
*, const char *,
203 const char *, int, int, int);
204 static char *skip_whitespace (char *);
205 static void delete_if_ordinary (const char *);
206 static void delete_temp_files (void);
207 static void delete_failure_queue (void);
208 static void clear_failure_queue (void);
209 static int check_live_switch (int, int);
210 static const char *handle_braces (const char *);
211 static inline bool input_suffix_matches (const char *, const char *);
212 static inline bool switch_matches (const char *, const char *, int);
213 static inline void mark_matching_switches (const char *, const char *, int);
214 static inline void process_marked_switches (void);
215 static const char *process_brace_body (const char *, const char *, const char *, int, int);
216 static const struct spec_function
*lookup_spec_function (const char *);
217 static const char *eval_spec_function (const char *, const char *);
218 static const char *handle_spec_function (const char *);
219 static char *save_string (const char *, int);
220 static void set_collect_gcc_options (void);
221 static int do_spec_1 (const char *, int, const char *);
222 static int do_spec_2 (const char *);
223 static void do_option_spec (const char *, const char *);
224 static void do_self_spec (const char *);
225 static const char *find_file (const char *);
226 static int is_directory (const char *, bool);
227 static const char *validate_switches (const char *, bool);
228 static void validate_all_switches (void);
229 static inline void validate_switches_from_spec (const char *, bool);
230 static void give_switch (int, int);
231 static int used_arg (const char *, int);
232 static int default_arg (const char *, int);
233 static void set_multilib_dir (void);
234 static void print_multilib_info (void);
235 static void perror_with_name (const char *);
236 static void display_help (void);
237 static void add_preprocessor_option (const char *, int);
238 static void add_assembler_option (const char *, int);
239 static void add_linker_option (const char *, int);
240 static void process_command (unsigned int, struct cl_decoded_option
*);
241 static int execute (void);
242 static void alloc_args (void);
243 static void clear_args (void);
244 static void fatal_signal (int);
245 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
246 static void init_gcc_specs (struct obstack
*, const char *, const char *,
249 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
250 static const char *convert_filename (const char *, int, int);
253 static const char *getenv_spec_function (int, const char **);
254 static const char *if_exists_spec_function (int, const char **);
255 static const char *if_exists_else_spec_function (int, const char **);
256 static const char *replace_outfile_spec_function (int, const char **);
257 static const char *remove_outfile_spec_function (int, const char **);
258 static const char *version_compare_spec_function (int, const char **);
259 static const char *include_spec_function (int, const char **);
260 static const char *find_file_spec_function (int, const char **);
261 static const char *find_plugindir_spec_function (int, const char **);
262 static const char *print_asm_header_spec_function (int, const char **);
263 static const char *compare_debug_dump_opt_spec_function (int, const char **);
264 static const char *compare_debug_self_opt_spec_function (int, const char **);
265 static const char *compare_debug_auxbase_opt_spec_function (int, const char **);
266 static const char *pass_through_libs_spec_func (int, const char **);
267 static const char *replace_extension_spec_func (int, const char **);
268 static char *convert_white_space (char *);
270 /* The Specs Language
272 Specs are strings containing lines, each of which (if not blank)
273 is made up of a program name, and arguments separated by spaces.
274 The program name must be exact and start from root, since no path
275 is searched and it is unreliable to depend on the current working directory.
276 Redirection of input or output is not supported; the subprograms must
277 accept filenames saying what files to read and write.
279 In addition, the specs can contain %-sequences to substitute variable text
280 or for conditional text. Here is a table of all defined %-sequences.
281 Note that spaces are not generated automatically around the results of
282 expanding these sequences; therefore, you can concatenate them together
283 or with constant text in a single argument.
285 %% substitute one % into the program name or argument.
286 %i substitute the name of the input file being processed.
287 %b substitute the basename of the input file being processed.
288 This is the substring up to (and not including) the last period
289 and not including the directory unless -save-temps was specified
290 to put temporaries in a different location.
291 %B same as %b, but include the file suffix (text after the last period).
293 substitute a file name that has suffix SUFFIX and is chosen
294 once per compilation, and mark the argument a la %d. To reduce
295 exposure to denial-of-service attacks, the file name is now
296 chosen in a way that is hard to predict even when previously
297 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
298 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
299 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
300 had been pre-processed. Previously, %g was simply substituted
301 with a file name chosen once per compilation, without regard
302 to any appended suffix (which was therefore treated just like
303 ordinary text), making such attacks more likely to succeed.
305 like %g, but if -pipe is in effect, expands simply to "-".
307 like %g, but if -pipe is in effect, expands to nothing. (We have both
308 %| and %m to accommodate differences between system assemblers; see
309 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
311 like %g, but generates a new temporary file name even if %uSUFFIX
314 substitutes the last file name generated with %uSUFFIX, generating a
315 new one if there is no such last file name. In the absence of any
316 %uSUFFIX, this is just like %gSUFFIX, except they don't share
317 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
318 would involve the generation of two distinct file names, one
319 for each `%g.s' and another for each `%U.s'. Previously, %U was
320 simply substituted with a file name chosen for the previous %u,
321 without regard to any appended suffix.
323 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
324 writable, and if save-temps is off; otherwise, substitute the name
325 of a temporary file, just like %u. This temporary file is not
326 meant for communication between processes, but rather as a junk
329 substitutes .SUFFIX for the suffixes of a matched switch's args when
330 it is subsequently output with %*. SUFFIX is terminated by the next
332 %d marks the argument containing or following the %d as a
333 temporary file name, so that that file will be deleted if GCC exits
334 successfully. Unlike %g, this contributes no text to the argument.
335 %w marks the argument containing or following the %w as the
336 "output file" of this compilation. This puts the argument
337 into the sequence of arguments that %o will substitute later.
338 %V indicates that this compilation produces no "output file".
340 like %{...} but mark last argument supplied within
341 as a file to be deleted on failure.
342 %o substitutes the names of all the output files, with spaces
343 automatically placed around them. You should write spaces
344 around the %o as well or the results are undefined.
345 %o is for use in the specs for running the linker.
346 Input files whose names have no recognized suffix are not compiled
347 at all, but they are included among the output files, so they will
349 %O substitutes the suffix for object files. Note that this is
350 handled specially when it immediately follows %g, %u, or %U
351 (with or without a suffix argument) because of the need for
352 those to form complete file names. The handling is such that
353 %O is treated exactly as if it had already been substituted,
354 except that %g, %u, and %U do not currently support additional
355 SUFFIX characters following %O as they would following, for
357 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
358 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
359 and -B options) and -imultilib as necessary.
360 %s current argument is the name of a library or startup file of some sort.
361 Search for that file in a standard list of directories
362 and substitute the full name found.
363 %eSTR Print STR as an error message. STR is terminated by a newline.
364 Use this when inconsistent options are detected.
365 %nSTR Print STR as a notice. STR is terminated by a newline.
366 %x{OPTION} Accumulate an option for %X.
367 %X Output the accumulated linker options specified by compilations.
368 %Y Output the accumulated assembler options specified by compilations.
369 %Z Output the accumulated preprocessor options specified by compilations.
370 %a process ASM_SPEC as a spec.
371 This allows config.h to specify part of the spec for running as.
372 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
373 used here. This can be used to run a post-processor after the
374 assembler has done its job.
375 %D Dump out a -L option for each directory in startfile_prefixes.
376 If multilib_dir is set, extra entries are generated with it affixed.
377 %l process LINK_SPEC as a spec.
378 %L process LIB_SPEC as a spec.
379 %M Output multilib_os_dir.
380 %G process LIBGCC_SPEC as a spec.
381 %R Output the concatenation of target_system_root and
382 target_sysroot_suffix.
383 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
384 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
385 %C process CPP_SPEC as a spec.
386 %1 process CC1_SPEC as a spec.
387 %2 process CC1PLUS_SPEC as a spec.
388 %* substitute the variable part of a matched option. (See below.)
389 Note that each comma in the substituted string is replaced by
391 %<S remove all occurrences of -S from the command line.
392 Note - this command is position dependent. % commands in the
393 spec string before this one will see -S, % commands in the
394 spec string after this one will not.
395 %>S Similar to "%<S", but keep it in the GCC command line.
396 %<S* remove all occurrences of all switches beginning with -S from the
399 Call the named function FUNCTION, passing it ARGS. ARGS is
400 first processed as a nested spec string, then split into an
401 argument vector in the usual fashion. The function returns
402 a string which is processed as if it had appeared literally
403 as part of the current spec.
404 %{S} substitutes the -S switch, if that switch was given to GCC.
405 If that switch was not specified, this substitutes nothing.
406 Here S is a metasyntactic variable.
407 %{S*} substitutes all the switches specified to GCC whose names start
408 with -S. This is used for -o, -I, etc; switches that take
409 arguments. GCC considers `-o foo' as being one switch whose
410 name starts with `o'. %{o*} would substitute this text,
411 including the space; thus, two arguments would be generated.
412 %{S*&T*} likewise, but preserve order of S and T options (the order
413 of S and T in the spec is not significant). Can be any number
414 of ampersand-separated variables; for each the wild card is
415 optional. Useful for CPP as %{D*&U*&A*}.
417 %{S:X} substitutes X, if the -S switch was given to GCC.
418 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
419 %{S*:X} substitutes X if one or more switches whose names start
420 with -S was given to GCC. Normally X is substituted only
421 once, no matter how many such switches appeared. However,
422 if %* appears somewhere in X, then X will be substituted
423 once for each matching switch, with the %* replaced by the
424 part of that switch that matched the '*'.
425 %{.S:X} substitutes X, if processing a file with suffix S.
426 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
427 %{,S:X} substitutes X, if processing a file which will use spec S.
428 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
430 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
431 combined with '!', '.', ',', and '*' as above binding stronger
433 If %* appears in X, all of the alternatives must be starred, and
434 only the first matching alternative is substituted.
435 %{S:X; if S was given to GCC, substitutes X;
436 T:Y; else if T was given to GCC, substitutes Y;
437 :D} else substitutes D. There can be as many clauses as you need.
438 This may be combined with '.', '!', ',', '|', and '*' as above.
440 %(Spec) processes a specification defined in a specs file as *Spec:
442 The conditional text X in a %{S:X} or similar construct may contain
443 other nested % constructs or spaces, or even newlines. They are
444 processed as usual, as described above. Trailing white space in X is
445 ignored. White space may also appear anywhere on the left side of the
446 colon in these constructs, except between . or * and the corresponding
449 The -O, -f, -g, -m, and -W switches are handled specifically in these
450 constructs. If another value of -O or the negated form of a -f, -m, or
451 -W switch is found later in the command line, the earlier switch
452 value is ignored, except with {S*} where S is just one letter; this
453 passes all matching options.
455 The character | at the beginning of the predicate text is used to indicate
456 that a command should be piped to the following command, but only if -pipe
459 Note that it is built into GCC which switches take arguments and which
460 do not. You might think it would be useful to generalize this to
461 allow each compiler's spec to say which switches take arguments. But
462 this cannot be done in a consistent fashion. GCC cannot even decide
463 which input files have been specified without knowing which switches
464 take arguments, and it must know which input files to compile in order
465 to tell which compilers to run.
467 GCC also knows implicitly that arguments starting in `-l' are to be
468 treated as compiler output files, and passed to the linker in their
469 proper position among the other output files. */
471 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
473 /* config.h can define ASM_SPEC to provide extra args to the assembler
474 or extra switch-translations. */
479 /* config.h can define ASM_FINAL_SPEC to run a post processor after
480 the assembler has run. */
481 #ifndef ASM_FINAL_SPEC
482 #define ASM_FINAL_SPEC \
484 objcopy --extract-dwo \
485 %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \
486 %{c:%{o*:%:replace-extension(%{o*:%*} .dwo)}%{!o*:%b.dwo}}%{!c:%b.dwo} \n\
487 objcopy --strip-dwo \
488 %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \
492 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
493 or extra switch-translations. */
498 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
499 or extra switch-translations. */
504 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
505 or extra switch-translations. */
507 #define CC1PLUS_SPEC ""
510 /* config.h can define LINK_SPEC to provide extra args to the linker
511 or extra switch-translations. */
516 /* config.h can define LIB_SPEC to override the default libraries. */
518 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
523 /* XXX: valid only for GNU ld */
524 /* XXX: should exactly match hooks provided by libmudflap.a */
525 #define MFWRAP_SPEC " %{static: %{fmudflap|fmudflapth: \
526 --wrap=malloc --wrap=free --wrap=calloc --wrap=realloc\
527 --wrap=mmap --wrap=mmap64 --wrap=munmap --wrap=alloca\
528 } %{fmudflapth: --wrap=pthread_create\
529 }} %{fmudflap|fmudflapth: --wrap=main}"
532 #define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}"
535 /* When using -fsplit-stack we need to wrap pthread_create, in order
536 to initialize the stack guard. We always use wrapping, rather than
537 shared library ordering, and we keep the wrapper function in
538 libgcc. This is not yet a real spec, though it could become one;
539 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping
540 only works with GNU ld and gold. FIXME: This is incompatible with
541 -fmudflap when linking statically, which wants to do its own
543 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}"
546 #ifdef STATIC_LIBASAN_LIBS
547 #define ADD_STATIC_LIBASAN_LIBS \
548 " %{static-libasan:" STATIC_LIBASAN_LIBS "}"
550 #define ADD_STATIC_LIBASAN_LIBS
552 #ifdef LIBASAN_EARLY_SPEC
553 #define LIBASAN_SPEC ADD_STATIC_LIBASAN_LIBS
554 #elif defined(HAVE_LD_STATIC_DYNAMIC)
555 #define LIBASAN_SPEC "%{static-libasan:" LD_STATIC_OPTION \
556 "} -lasan %{static-libasan:" LD_DYNAMIC_OPTION "}" \
557 ADD_STATIC_LIBASAN_LIBS
559 #define LIBASAN_SPEC "-lasan" ADD_STATIC_LIBASAN_LIBS
563 #ifndef LIBASAN_EARLY_SPEC
564 #define LIBASAN_EARLY_SPEC ""
568 #ifdef STATIC_LIBTSAN_LIBS
569 #define ADD_STATIC_LIBTSAN_LIBS \
570 " %{static-libtsan:" STATIC_LIBTSAN_LIBS "}"
572 #define ADD_STATIC_LIBTSAN_LIBS
574 #ifdef LIBTSAN_EARLY_SPEC
575 #define LIBTSAN_SPEC ADD_STATIC_LIBTSAN_LIBS
576 #elif defined(HAVE_LD_STATIC_DYNAMIC)
577 #define LIBTSAN_SPEC "%{static-libtsan:" LD_STATIC_OPTION \
578 "} -ltsan %{static-libtsan:" LD_DYNAMIC_OPTION "}" \
579 ADD_STATIC_LIBTSAN_LIBS
581 #define LIBTSAN_SPEC "-ltsan" ADD_STATIC_LIBTSAN_LIBS
585 #ifndef LIBTSAN_EARLY_SPEC
586 #define LIBTSAN_EARLY_SPEC ""
589 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
592 #if defined(REAL_LIBGCC_SPEC)
593 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
594 #elif defined(LINK_LIBGCC_SPECIAL_1)
595 /* Have gcc do the search for libgcc.a. */
596 #define LIBGCC_SPEC "libgcc.a%s"
598 #define LIBGCC_SPEC "-lgcc"
602 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
603 #ifndef STARTFILE_SPEC
604 #define STARTFILE_SPEC \
605 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
608 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
610 #define ENDFILE_SPEC ""
614 #define LINKER_NAME "collect2"
617 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
618 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
623 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
625 #ifndef ASM_DEBUG_SPEC
626 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
627 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
628 # define ASM_DEBUG_SPEC \
629 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
630 ? "%{!g0:%{gdwarf*:--gdwarf2}%{!gdwarf*:%{g*:--gstabs}}}" ASM_MAP \
631 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
633 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
634 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
636 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
637 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
641 #ifndef ASM_DEBUG_SPEC
642 # define ASM_DEBUG_SPEC ""
645 /* Here is the spec for running the linker, after compiling all files. */
647 /* This is overridable by the target in case they need to specify the
648 -lgcc and -lc order specially, yet not require them to override all
649 of LINK_COMMAND_SPEC. */
650 #ifndef LINK_GCC_C_SEQUENCE_SPEC
651 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
654 #ifndef LINK_SSP_SPEC
655 #ifdef TARGET_LIBC_PROVIDES_SSP
656 #define LINK_SSP_SPEC "%{fstack-protector:}"
658 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-strong|fstack-protector-all:-lssp_nonshared -lssp}"
662 #ifndef LINK_PIE_SPEC
664 #define LINK_PIE_SPEC "%{pie:-pie} "
666 #define LINK_PIE_SPEC "%{pie:} "
670 #ifndef LINK_BUILDID_SPEC
671 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
672 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
676 /* Conditional to test whether the LTO plugin is used or not.
677 FIXME: For slim LTO we will need to enable plugin unconditionally. This
678 still cause problems with PLUGIN_LD != LD and when plugin is built but
679 not useable. For GCC 4.6 we don't support slim LTO and thus we can enable
680 plugin only when LTO is enabled. We still honor explicit
681 -fuse-linker-plugin if the linker used understands -plugin. */
683 /* The linker has some plugin support. */
684 #if HAVE_LTO_PLUGIN > 0
685 /* The linker used has full plugin support, use LTO plugin by default. */
686 #if HAVE_LTO_PLUGIN == 2
687 #define PLUGIN_COND "!fno-use-linker-plugin:%{flto|flto=*|fuse-linker-plugin"
688 #define PLUGIN_COND_CLOSE "}"
690 /* The linker used has limited plugin support, use LTO plugin with explicit
691 -fuse-linker-plugin. */
692 #define PLUGIN_COND "fuse-linker-plugin"
693 #define PLUGIN_COND_CLOSE ""
695 #define LINK_PLUGIN_SPEC \
697 -plugin %(linker_plugin_file) \
698 -plugin-opt=%(lto_wrapper) \
699 -plugin-opt=-fresolution=%u.res \
700 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
703 /* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */
704 #define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\
705 %e-fuse-linker-plugin is not supported in this configuration}"
708 /* Linker command line options for -fsanitize= early on the command line. */
709 #ifndef SANITIZER_EARLY_SPEC
710 #define SANITIZER_EARLY_SPEC "\
711 %{!nostdlib:%{!nodefaultlibs:%{fsanitize=address:" LIBASAN_EARLY_SPEC "} \
712 %{fsanitize=thread:" LIBTSAN_EARLY_SPEC "}}}"
715 /* Linker command line options for -fsanitize= late on the command line. */
716 #ifndef SANITIZER_SPEC
717 #define SANITIZER_SPEC "\
718 %{!nostdlib:%{!nodefaultlibs:%{fsanitize=address:" LIBASAN_SPEC "\
719 %{static:%ecannot specify -static with -fsanitize=address}}\
720 %{fsanitize=thread:" LIBTSAN_SPEC "\
721 %{!pie:%{!shared:%e-fsanitize=thread linking must be done with -pie or -shared}}}}}"
724 /* -u* was put back because both BSD and SysV seem to support it. */
725 /* %{static:} simply prevents an error message if the target machine
726 doesn't handle -static. */
727 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
728 scripts which exist in user specified directories, or in standard
730 /* We pass any -flto flags on to the linker, which is expected
731 to understand them. In practice, this means it had better be collect2. */
732 /* %{e*} includes -export-dynamic; see comment in common.opt. */
733 #ifndef LINK_COMMAND_SPEC
734 #define LINK_COMMAND_SPEC "\
735 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
738 "%{flto|flto=*:%<fcompare-debug*} \
739 %{flto} %{flto=*} %l " LINK_PIE_SPEC \
740 "%{fuse-ld=*:-fuse-ld=%*}\
741 %X %{o*} %{e*} %{N} %{n} %{r}\
742 %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}}\
743 %{static:} %{L*} %(mfwrap) %(link_libgcc) " SANITIZER_EARLY_SPEC " %o\
744 %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
745 %{fgnu-tm:%:include(libitm.spec)%(link_itm)}\
746 %(mflib) " STACK_SPLIT_SPEC "\
747 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} " SANITIZER_SPEC " \
748 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
749 %{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}"
752 #ifndef LINK_LIBGCC_SPEC
753 /* Generate -L options for startfile prefix list. */
754 # define LINK_LIBGCC_SPEC "%D"
757 #ifndef STARTFILE_PREFIX_SPEC
758 # define STARTFILE_PREFIX_SPEC ""
762 # define SYSROOT_SPEC "--sysroot=%R"
765 #ifndef SYSROOT_SUFFIX_SPEC
766 # define SYSROOT_SUFFIX_SPEC ""
769 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
770 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
773 static const char *asm_debug
= ASM_DEBUG_SPEC
;
774 static const char *cpp_spec
= CPP_SPEC
;
775 static const char *cc1_spec
= CC1_SPEC
;
776 static const char *cc1plus_spec
= CC1PLUS_SPEC
;
777 static const char *link_gcc_c_sequence_spec
= LINK_GCC_C_SEQUENCE_SPEC
;
778 static const char *link_ssp_spec
= LINK_SSP_SPEC
;
779 static const char *asm_spec
= ASM_SPEC
;
780 static const char *asm_final_spec
= ASM_FINAL_SPEC
;
781 static const char *link_spec
= LINK_SPEC
;
782 static const char *lib_spec
= LIB_SPEC
;
783 static const char *mfwrap_spec
= MFWRAP_SPEC
;
784 static const char *mflib_spec
= MFLIB_SPEC
;
785 static const char *link_gomp_spec
= "";
786 static const char *libgcc_spec
= LIBGCC_SPEC
;
787 static const char *endfile_spec
= ENDFILE_SPEC
;
788 static const char *startfile_spec
= STARTFILE_SPEC
;
789 static const char *linker_name_spec
= LINKER_NAME
;
790 static const char *linker_plugin_file_spec
= "";
791 static const char *lto_wrapper_spec
= "";
792 static const char *lto_gcc_spec
= "";
793 static const char *link_command_spec
= LINK_COMMAND_SPEC
;
794 static const char *link_libgcc_spec
= LINK_LIBGCC_SPEC
;
795 static const char *startfile_prefix_spec
= STARTFILE_PREFIX_SPEC
;
796 static const char *sysroot_spec
= SYSROOT_SPEC
;
797 static const char *sysroot_suffix_spec
= SYSROOT_SUFFIX_SPEC
;
798 static const char *sysroot_hdrs_suffix_spec
= SYSROOT_HEADERS_SUFFIX_SPEC
;
799 static const char *self_spec
= "";
801 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
802 There should be no need to override these in target dependent files,
803 but we need to copy them to the specs file so that newer versions
804 of the GCC driver can correctly drive older tool chains with the
805 appropriate -B options. */
807 /* When cpplib handles traditional preprocessing, get rid of this, and
808 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
809 that we default the front end language better. */
810 static const char *trad_capable_cpp
=
811 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}";
813 /* We don't wrap .d files in %W{} since a missing .d file, and
814 therefore no dependency entry, confuses make into thinking a .o
815 file that happens to exist is up-to-date. */
816 static const char *cpp_unique_options
=
817 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
818 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
819 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
820 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
821 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
822 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
823 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
824 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
825 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
826 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
829 /* This contains cpp options which are common with cc1_options and are passed
830 only when preprocessing only to avoid duplication. We pass the cc1 spec
831 options to the preprocessor so that it the cc1 spec may manipulate
832 options used to set target flags. Those special target flags settings may
833 in turn cause preprocessor symbols to be defined specially. */
834 static const char *cpp_options
=
835 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
836 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
837 %{undef} %{save-temps*:-fpch-preprocess}";
839 /* This contains cpp options which are not passed when the preprocessor
840 output will be used by another program. */
841 static const char *cpp_debug_options
= "%{d*}";
843 /* NB: This is shared amongst all front-ends, except for Ada. */
844 static const char *cc1_options
=
845 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
846 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
847 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
848 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
849 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
850 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
851 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
852 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\
853 %{-target-help:--target-help}\
854 %{-version:--version}\
855 %{-help=*:--help=%*}\
856 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
857 %{fsyntax-only:-o %j} %{-param*}\
858 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\
859 %{coverage:-fprofile-arcs -ftest-coverage}";
861 static const char *asm_options
=
862 "%{-target-help:%:print-asm-header()} "
864 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
865 to the assembler equivalents. */
866 "%{v} %{w:-W} %{I*} "
868 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
870 static const char *invoke_as
=
871 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
873 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
874 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
878 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
879 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
883 /* Some compilers have limits on line lengths, and the multilib_select
884 and/or multilib_matches strings can be very long, so we build them at
886 static struct obstack multilib_obstack
;
887 static const char *multilib_select
;
888 static const char *multilib_matches
;
889 static const char *multilib_defaults
;
890 static const char *multilib_exclusions
;
891 static const char *multilib_reuse
;
893 /* Check whether a particular argument is a default argument. */
895 #ifndef MULTILIB_DEFAULTS
896 #define MULTILIB_DEFAULTS { "" }
899 static const char *const multilib_defaults_raw
[] = MULTILIB_DEFAULTS
;
901 #ifndef DRIVER_SELF_SPECS
902 #define DRIVER_SELF_SPECS ""
905 /* Adding -fopenmp should imply pthreads. This is particularly important
906 for targets that use different start files and suchlike. */
907 #ifndef GOMP_SELF_SPECS
908 #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}"
911 /* Likewise for -fgnu-tm. */
912 #ifndef GTM_SELF_SPECS
913 #define GTM_SELF_SPECS "%{fgnu-tm: -pthread}"
916 static const char *const driver_self_specs
[] = {
917 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
918 DRIVER_SELF_SPECS
, CONFIGURE_SPECS
, GOMP_SELF_SPECS
, GTM_SELF_SPECS
921 #ifndef OPTION_DEFAULT_SPECS
922 #define OPTION_DEFAULT_SPECS { "", "" }
931 static const struct default_spec
932 option_default_specs
[] = { OPTION_DEFAULT_SPECS
};
936 struct user_specs
*next
;
937 const char *filename
;
940 static struct user_specs
*user_specs_head
, *user_specs_tail
;
943 /* Record the mapping from file suffixes for compilation specs. */
947 const char *suffix
; /* Use this compiler for input files
948 whose names end in this suffix. */
950 const char *spec
; /* To use this compiler, run this spec. */
952 const char *cpp_spec
; /* If non-NULL, substitute this spec
953 for `%C', rather than the usual
955 const int combinable
; /* If nonzero, compiler can deal with
956 multiple source files at once (IMA). */
957 const int needs_preprocessing
; /* If nonzero, source files need to
958 be run through a preprocessor. */
961 /* Pointer to a vector of `struct compiler' that gives the spec for
962 compiling a file, based on its suffix.
963 A file that does not end in any of these suffixes will be passed
964 unchanged to the loader and nothing else will be done to it.
966 An entry containing two 0s is used to terminate the vector.
968 If multiple entries match a file, the last matching one is used. */
970 static struct compiler
*compilers
;
972 /* Number of entries in `compilers', not counting the null terminator. */
974 static int n_compilers
;
976 /* The default list of file name suffixes and their compilation specs. */
978 static const struct compiler default_compilers
[] =
980 /* Add lists of suffixes of known languages here. If those languages
981 were not present when we built the driver, we will hit these copies
982 and be given a more meaningful error than "file not used since
983 linking is not done". */
984 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
985 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
986 {".mii", "#Objective-C++", 0, 0, 0},
987 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
988 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
989 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
990 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
991 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
992 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
993 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
994 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
995 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
996 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
997 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
998 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
999 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
1000 {".r", "#Ratfor", 0, 0, 0},
1001 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
1002 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
1003 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
1004 {".go", "#Go", 0, 1, 0},
1005 /* Next come the entries for C. */
1006 {".c", "@c", 0, 0, 1},
1008 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1009 external preprocessor if -save-temps is given. */
1010 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1013 %eGNU C no longer supports -traditional without -E}\
1014 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1015 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1016 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1018 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1019 cc1 %(cpp_unique_options) %(cc1_options)}}}\
1020 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
1022 "%{!E:%e-E or -x required when input is from standard input}\
1023 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
1024 {".h", "@c-header", 0, 0, 0},
1026 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1027 external preprocessor if -save-temps is given. */
1028 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1030 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1031 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1032 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1034 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
1035 %W{o*:--output-pch=%*}}%V}\
1036 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1037 cc1 %(cpp_unique_options) %(cc1_options)\
1038 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
1039 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
1040 {".i", "@cpp-output", 0, 0, 0},
1042 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
1043 {".s", "@assembler", 0, 0, 0},
1045 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
1046 {".sx", "@assembler-with-cpp", 0, 0, 0},
1047 {".S", "@assembler-with-cpp", 0, 0, 0},
1048 {"@assembler-with-cpp",
1049 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
1050 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1051 %{E|M|MM:%(cpp_debug_options)}\
1052 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1053 as %(asm_debug) %(asm_options) %|.s %A }}}}"
1055 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1056 %{E|M|MM:%(cpp_debug_options)}\
1057 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1058 as %(asm_debug) %(asm_options) %m.s %A }}}}"
1063 /* Mark end of table. */
1067 /* Number of elements in default_compilers, not counting the terminator. */
1069 static const int n_default_compilers
= ARRAY_SIZE (default_compilers
) - 1;
1071 typedef char *char_p
; /* For DEF_VEC_P. */
1073 /* A vector of options to give to the linker.
1074 These options are accumulated by %x,
1075 and substituted into the linker command with %X. */
1076 static vec
<char_p
> linker_options
;
1078 /* A vector of options to give to the assembler.
1079 These options are accumulated by -Wa,
1080 and substituted into the assembler command with %Y. */
1081 static vec
<char_p
> assembler_options
;
1083 /* A vector of options to give to the preprocessor.
1084 These options are accumulated by -Wp,
1085 and substituted into the preprocessor command with %Z. */
1086 static vec
<char_p
> preprocessor_options
;
1089 skip_whitespace (char *p
)
1093 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1094 be considered whitespace. */
1095 if (p
[0] == '\n' && p
[1] == '\n' && p
[2] == '\n')
1097 else if (*p
== '\n' || *p
== ' ' || *p
== '\t')
1111 /* Structures to keep track of prefixes to try when looking for files. */
1115 const char *prefix
; /* String to prepend to the path. */
1116 struct prefix_list
*next
; /* Next in linked list. */
1117 int require_machine_suffix
; /* Don't use without machine_suffix. */
1118 /* 2 means try both machine_suffix and just_machine_suffix. */
1119 int priority
; /* Sort key - priority within list. */
1120 int os_multilib
; /* 1 if OS multilib scheme should be used,
1121 0 for GCC multilib scheme. */
1126 struct prefix_list
*plist
; /* List of prefixes to try */
1127 int max_len
; /* Max length of a prefix in PLIST */
1128 const char *name
; /* Name of this list (used in config stuff) */
1131 /* List of prefixes to try when looking for executables. */
1133 static struct path_prefix exec_prefixes
= { 0, 0, "exec" };
1135 /* List of prefixes to try when looking for startup (crt0) files. */
1137 static struct path_prefix startfile_prefixes
= { 0, 0, "startfile" };
1139 /* List of prefixes to try when looking for include files. */
1141 static struct path_prefix include_prefixes
= { 0, 0, "include" };
1143 /* Suffix to attach to directories searched for commands.
1144 This looks like `MACHINE/VERSION/'. */
1146 static const char *machine_suffix
= 0;
1148 /* Suffix to attach to directories searched for commands.
1149 This is just `MACHINE/'. */
1151 static const char *just_machine_suffix
= 0;
1153 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1155 static const char *gcc_exec_prefix
;
1157 /* Adjusted value of standard_libexec_prefix. */
1159 static const char *gcc_libexec_prefix
;
1161 /* Default prefixes to attach to command names. */
1163 #ifndef STANDARD_STARTFILE_PREFIX_1
1164 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1166 #ifndef STANDARD_STARTFILE_PREFIX_2
1167 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1170 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1171 #undef MD_EXEC_PREFIX
1172 #undef MD_STARTFILE_PREFIX
1173 #undef MD_STARTFILE_PREFIX_1
1176 /* If no prefixes defined, use the null string, which will disable them. */
1177 #ifndef MD_EXEC_PREFIX
1178 #define MD_EXEC_PREFIX ""
1180 #ifndef MD_STARTFILE_PREFIX
1181 #define MD_STARTFILE_PREFIX ""
1183 #ifndef MD_STARTFILE_PREFIX_1
1184 #define MD_STARTFILE_PREFIX_1 ""
1187 /* These directories are locations set at configure-time based on the
1188 --prefix option provided to configure. Their initializers are
1189 defined in Makefile.in. These paths are not *directly* used when
1190 gcc_exec_prefix is set because, in that case, we know where the
1191 compiler has been installed, and use paths relative to that
1192 location instead. */
1193 static const char *const standard_exec_prefix
= STANDARD_EXEC_PREFIX
;
1194 static const char *const standard_libexec_prefix
= STANDARD_LIBEXEC_PREFIX
;
1195 static const char *const standard_bindir_prefix
= STANDARD_BINDIR_PREFIX
;
1196 static const char *const standard_startfile_prefix
= STANDARD_STARTFILE_PREFIX
;
1198 /* For native compilers, these are well-known paths containing
1199 components that may be provided by the system. For cross
1200 compilers, these paths are not used. */
1201 static const char *md_exec_prefix
= MD_EXEC_PREFIX
;
1202 static const char *md_startfile_prefix
= MD_STARTFILE_PREFIX
;
1203 static const char *md_startfile_prefix_1
= MD_STARTFILE_PREFIX_1
;
1204 static const char *const standard_startfile_prefix_1
1205 = STANDARD_STARTFILE_PREFIX_1
;
1206 static const char *const standard_startfile_prefix_2
1207 = STANDARD_STARTFILE_PREFIX_2
;
1209 /* A relative path to be used in finding the location of tools
1210 relative to the driver. */
1211 static const char *const tooldir_base_prefix
= TOOLDIR_BASE_PREFIX
;
1213 /* Subdirectory to use for locating libraries. Set by
1214 set_multilib_dir based on the compilation options. */
1216 static const char *multilib_dir
;
1218 /* Subdirectory to use for locating libraries in OS conventions. Set by
1219 set_multilib_dir based on the compilation options. */
1221 static const char *multilib_os_dir
;
1223 /* Subdirectory to use for locating libraries in multiarch conventions. Set by
1224 set_multilib_dir based on the compilation options. */
1226 static const char *multiarch_dir
;
1228 /* Structure to keep track of the specs that have been defined so far.
1229 These are accessed using %(specname) in a compiler or link
1234 /* The following 2 fields must be first */
1235 /* to allow EXTRA_SPECS to be initialized */
1236 const char *name
; /* name of the spec. */
1237 const char *ptr
; /* available ptr if no static pointer */
1239 /* The following fields are not initialized */
1240 /* by EXTRA_SPECS */
1241 const char **ptr_spec
; /* pointer to the spec itself. */
1242 struct spec_list
*next
; /* Next spec in linked list. */
1243 int name_len
; /* length of the name */
1244 bool user_p
; /* whether string come from file spec. */
1245 bool alloc_p
; /* whether string was allocated */
1248 #define INIT_STATIC_SPEC(NAME,PTR) \
1249 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, false, false }
1251 /* List of statically defined specs. */
1252 static struct spec_list static_specs
[] =
1254 INIT_STATIC_SPEC ("asm", &asm_spec
),
1255 INIT_STATIC_SPEC ("asm_debug", &asm_debug
),
1256 INIT_STATIC_SPEC ("asm_final", &asm_final_spec
),
1257 INIT_STATIC_SPEC ("asm_options", &asm_options
),
1258 INIT_STATIC_SPEC ("invoke_as", &invoke_as
),
1259 INIT_STATIC_SPEC ("cpp", &cpp_spec
),
1260 INIT_STATIC_SPEC ("cpp_options", &cpp_options
),
1261 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options
),
1262 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options
),
1263 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp
),
1264 INIT_STATIC_SPEC ("cc1", &cc1_spec
),
1265 INIT_STATIC_SPEC ("cc1_options", &cc1_options
),
1266 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec
),
1267 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec
),
1268 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec
),
1269 INIT_STATIC_SPEC ("endfile", &endfile_spec
),
1270 INIT_STATIC_SPEC ("link", &link_spec
),
1271 INIT_STATIC_SPEC ("lib", &lib_spec
),
1272 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec
),
1273 INIT_STATIC_SPEC ("mflib", &mflib_spec
),
1274 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec
),
1275 INIT_STATIC_SPEC ("libgcc", &libgcc_spec
),
1276 INIT_STATIC_SPEC ("startfile", &startfile_spec
),
1277 INIT_STATIC_SPEC ("cross_compile", &cross_compile
),
1278 INIT_STATIC_SPEC ("version", &compiler_version
),
1279 INIT_STATIC_SPEC ("multilib", &multilib_select
),
1280 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults
),
1281 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra
),
1282 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches
),
1283 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions
),
1284 INIT_STATIC_SPEC ("multilib_options", &multilib_options
),
1285 INIT_STATIC_SPEC ("multilib_reuse", &multilib_reuse
),
1286 INIT_STATIC_SPEC ("linker", &linker_name_spec
),
1287 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec
),
1288 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec
),
1289 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec
),
1290 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec
),
1291 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix
),
1292 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix
),
1293 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1
),
1294 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec
),
1295 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec
),
1296 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec
),
1297 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec
),
1298 INIT_STATIC_SPEC ("self_spec", &self_spec
),
1301 #ifdef EXTRA_SPECS /* additional specs needed */
1302 /* Structure to keep track of just the first two args of a spec_list.
1303 That is all that the EXTRA_SPECS macro gives us. */
1306 const char *const name
;
1307 const char *const ptr
;
1310 static const struct spec_list_1 extra_specs_1
[] = { EXTRA_SPECS
};
1311 static struct spec_list
*extra_specs
= (struct spec_list
*) 0;
1314 /* List of dynamically allocates specs that have been defined so far. */
1316 static struct spec_list
*specs
= (struct spec_list
*) 0;
1318 /* List of static spec functions. */
1320 static const struct spec_function static_spec_functions
[] =
1322 { "getenv", getenv_spec_function
},
1323 { "if-exists", if_exists_spec_function
},
1324 { "if-exists-else", if_exists_else_spec_function
},
1325 { "replace-outfile", replace_outfile_spec_function
},
1326 { "remove-outfile", remove_outfile_spec_function
},
1327 { "version-compare", version_compare_spec_function
},
1328 { "include", include_spec_function
},
1329 { "find-file", find_file_spec_function
},
1330 { "find-plugindir", find_plugindir_spec_function
},
1331 { "print-asm-header", print_asm_header_spec_function
},
1332 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function
},
1333 { "compare-debug-self-opt", compare_debug_self_opt_spec_function
},
1334 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function
},
1335 { "pass-through-libs", pass_through_libs_spec_func
},
1336 { "replace-extension", replace_extension_spec_func
},
1337 #ifdef EXTRA_SPEC_FUNCTIONS
1338 EXTRA_SPEC_FUNCTIONS
1343 static int processing_spec_function
;
1345 /* Add appropriate libgcc specs to OBSTACK, taking into account
1346 various permutations of -shared-libgcc, -shared, and such. */
1348 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1350 #ifndef USE_LD_AS_NEEDED
1351 #define USE_LD_AS_NEEDED 0
1355 init_gcc_specs (struct obstack
*obstack
, const char *shared_name
,
1356 const char *static_name
, const char *eh_name
)
1360 buf
= concat ("%{static|static-libgcc:", static_name
, " ", eh_name
, "}"
1361 "%{!static:%{!static-libgcc:"
1362 #if USE_LD_AS_NEEDED
1363 "%{!shared-libgcc:",
1364 static_name
, " " LD_AS_NEEDED_OPTION
" ",
1365 shared_name
, " " LD_NO_AS_NEEDED_OPTION
1368 shared_name
, "%{!shared: ", static_name
, "}"
1372 "%{!shared-libgcc:", static_name
, " ", eh_name
, "}"
1373 "%{shared-libgcc:", shared_name
, " ", static_name
, "}"
1377 "%{shared-libgcc:", shared_name
, "}"
1378 "%{!shared-libgcc:", static_name
, "}"
1381 "%{shared:", shared_name
, "}"
1386 obstack_grow (obstack
, buf
, strlen (buf
));
1389 #endif /* ENABLE_SHARED_LIBGCC */
1391 /* Initialize the specs lookup routines. */
1396 struct spec_list
*next
= (struct spec_list
*) 0;
1397 struct spec_list
*sl
= (struct spec_list
*) 0;
1401 return; /* Already initialized. */
1404 fnotice (stderr
, "Using built-in specs.\n");
1407 extra_specs
= XCNEWVEC (struct spec_list
, ARRAY_SIZE (extra_specs_1
));
1409 for (i
= ARRAY_SIZE (extra_specs_1
) - 1; i
>= 0; i
--)
1411 sl
= &extra_specs
[i
];
1412 sl
->name
= extra_specs_1
[i
].name
;
1413 sl
->ptr
= extra_specs_1
[i
].ptr
;
1415 sl
->name_len
= strlen (sl
->name
);
1416 sl
->ptr_spec
= &sl
->ptr
;
1421 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1423 sl
= &static_specs
[i
];
1428 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1429 /* ??? If neither -shared-libgcc nor --static-libgcc was
1430 seen, then we should be making an educated guess. Some proposed
1431 heuristics for ELF include:
1433 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1434 program will be doing dynamic loading, which will likely
1435 need the shared libgcc.
1437 (2) If "-ldl", then it's also a fair bet that we're doing
1440 (3) For each ET_DYN we're linking against (either through -lfoo
1441 or /some/path/foo.so), check to see whether it or one of
1442 its dependencies depends on a shared libgcc.
1446 If the runtime is fixed to look for program headers instead
1447 of calling __register_frame_info at all, for each object,
1448 use the shared libgcc if any EH symbol referenced.
1450 If crtstuff is fixed to not invoke __register_frame_info
1451 automatically, for each object, use the shared libgcc if
1452 any non-empty unwind section found.
1454 Doing any of this probably requires invoking an external program to
1455 do the actual object file scanning. */
1457 const char *p
= libgcc_spec
;
1460 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1461 when given the proper command line arguments. */
1464 if (in_sep
&& *p
== '-' && strncmp (p
, "-lgcc", 5) == 0)
1466 init_gcc_specs (&obstack
,
1468 #ifdef USE_LIBUNWIND_EXCEPTIONS
1474 #ifdef USE_LIBUNWIND_EXCEPTIONS
1475 # ifdef HAVE_LD_STATIC_DYNAMIC
1476 " %{!static:" LD_STATIC_OPTION
"} -lunwind"
1477 " %{!static:" LD_DYNAMIC_OPTION
"}"
1487 else if (in_sep
&& *p
== 'l' && strncmp (p
, "libgcc.a%s", 10) == 0)
1489 /* Ug. We don't know shared library extensions. Hope that
1490 systems that use this form don't do shared libraries. */
1491 init_gcc_specs (&obstack
,
1495 #ifdef USE_LIBUNWIND_EXCEPTIONS
1504 obstack_1grow (&obstack
, *p
);
1505 in_sep
= (*p
== ' ');
1510 obstack_1grow (&obstack
, '\0');
1511 libgcc_spec
= XOBFINISH (&obstack
, const char *);
1514 #ifdef USE_AS_TRADITIONAL_FORMAT
1515 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1517 static const char tf
[] = "--traditional-format ";
1518 obstack_grow (&obstack
, tf
, sizeof(tf
) - 1);
1519 obstack_grow0 (&obstack
, asm_spec
, strlen (asm_spec
));
1520 asm_spec
= XOBFINISH (&obstack
, const char *);
1524 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \
1525 defined LINKER_HASH_STYLE
1526 # ifdef LINK_BUILDID_SPEC
1527 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1528 obstack_grow (&obstack
, LINK_BUILDID_SPEC
, sizeof(LINK_BUILDID_SPEC
) - 1);
1530 # ifdef LINK_EH_SPEC
1531 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1532 obstack_grow (&obstack
, LINK_EH_SPEC
, sizeof(LINK_EH_SPEC
) - 1);
1534 # ifdef LINKER_HASH_STYLE
1535 /* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had
1538 static const char hash_style
[] = "--hash-style=";
1539 obstack_grow (&obstack
, hash_style
, sizeof(hash_style
) - 1);
1540 obstack_grow (&obstack
, LINKER_HASH_STYLE
, sizeof(LINKER_HASH_STYLE
) - 1);
1541 obstack_1grow (&obstack
, ' ');
1544 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
1545 link_spec
= XOBFINISH (&obstack
, const char *);
1551 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1552 removed; If the spec starts with a + then SPEC is added to the end of the
1556 set_spec (const char *name
, const char *spec
, bool user_p
)
1558 struct spec_list
*sl
;
1559 const char *old_spec
;
1560 int name_len
= strlen (name
);
1563 /* If this is the first call, initialize the statically allocated specs. */
1566 struct spec_list
*next
= (struct spec_list
*) 0;
1567 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1569 sl
= &static_specs
[i
];
1576 /* See if the spec already exists. */
1577 for (sl
= specs
; sl
; sl
= sl
->next
)
1578 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, name
))
1583 /* Not found - make it. */
1584 sl
= XNEW (struct spec_list
);
1585 sl
->name
= xstrdup (name
);
1586 sl
->name_len
= name_len
;
1587 sl
->ptr_spec
= &sl
->ptr
;
1589 *(sl
->ptr_spec
) = "";
1594 old_spec
= *(sl
->ptr_spec
);
1595 *(sl
->ptr_spec
) = ((spec
[0] == '+' && ISSPACE ((unsigned char)spec
[1]))
1596 ? concat (old_spec
, spec
+ 1, NULL
)
1601 fnotice (stderr
, "Setting spec %s to '%s'\n\n", name
, *(sl
->ptr_spec
));
1604 /* Free the old spec. */
1605 if (old_spec
&& sl
->alloc_p
)
1606 free (CONST_CAST(char *, old_spec
));
1608 sl
->user_p
= user_p
;
1612 /* Accumulate a command (program name and args), and run it. */
1614 typedef const char *const_char_p
; /* For DEF_VEC_P. */
1616 /* Vector of pointers to arguments in the current line of specifications. */
1618 static vec
<const_char_p
> argbuf
;
1620 /* Position in the argbuf vector containing the name of the output file
1621 (the value associated with the "-o" flag). */
1623 static int have_o_argbuf_index
= 0;
1625 /* Were the options -c, -S or -E passed. */
1626 static int have_c
= 0;
1628 /* Was the option -o passed. */
1629 static int have_o
= 0;
1631 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1632 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1635 static struct temp_name
{
1636 const char *suffix
; /* suffix associated with the code. */
1637 int length
; /* strlen (suffix). */
1638 int unique
; /* Indicates whether %g or %u/%U was used. */
1639 const char *filename
; /* associated filename. */
1640 int filename_length
; /* strlen (filename). */
1641 struct temp_name
*next
;
1644 /* Number of commands executed so far. */
1646 static int execution_count
;
1648 /* Number of commands that exited with a signal. */
1650 static int signal_count
;
1652 /* Allocate the argument vector. */
1660 /* Clear out the vector of arguments (after a command is executed). */
1665 argbuf
.truncate (0);
1668 /* Add one argument to the vector at the end.
1669 This is done when a space is seen or at the end of the line.
1670 If DELETE_ALWAYS is nonzero, the arg is a filename
1671 and the file should be deleted eventually.
1672 If DELETE_FAILURE is nonzero, the arg is a filename
1673 and the file should be deleted if this compilation fails. */
1676 store_arg (const char *arg
, int delete_always
, int delete_failure
)
1678 argbuf
.safe_push (arg
);
1680 if (strcmp (arg
, "-o") == 0)
1681 have_o_argbuf_index
= argbuf
.length ();
1682 if (delete_always
|| delete_failure
)
1685 /* If the temporary file we should delete is specified as
1686 part of a joined argument extract the filename. */
1688 && (p
= strrchr (arg
, '=')))
1690 record_temp_file (arg
, delete_always
, delete_failure
);
1694 /* Load specs from a file name named FILENAME, replacing occurrences of
1695 various different types of line-endings, \r\n, \n\r and just \r, with
1699 load_specs (const char *filename
)
1703 struct stat statbuf
;
1710 fnotice (stderr
, "Reading specs from %s\n", filename
);
1712 /* Open and stat the file. */
1713 desc
= open (filename
, O_RDONLY
, 0);
1715 pfatal_with_name (filename
);
1716 if (stat (filename
, &statbuf
) < 0)
1717 pfatal_with_name (filename
);
1719 /* Read contents of file into BUFFER. */
1720 buffer
= XNEWVEC (char, statbuf
.st_size
+ 1);
1721 readlen
= read (desc
, buffer
, (unsigned) statbuf
.st_size
);
1723 pfatal_with_name (filename
);
1724 buffer
[readlen
] = 0;
1727 specs
= XNEWVEC (char, readlen
+ 1);
1729 for (buffer_p
= buffer
; buffer_p
&& *buffer_p
; buffer_p
++)
1735 if (buffer_p
> buffer
&& *(buffer_p
- 1) == '\n') /* \n\r */
1737 else if (*(buffer_p
+ 1) == '\n') /* \r\n */
1751 /* Read compilation specs from a file named FILENAME,
1752 replacing the default ones.
1754 A suffix which starts with `*' is a definition for
1755 one of the machine-specific sub-specs. The "suffix" should be
1756 *asm, *cc1, *cpp, *link, *startfile, etc.
1757 The corresponding spec is stored in asm_spec, etc.,
1758 rather than in the `compilers' vector.
1760 Anything invalid in the file is a fatal error. */
1763 read_specs (const char *filename
, bool main_p
, bool user_p
)
1768 buffer
= load_specs (filename
);
1770 /* Scan BUFFER for specs, putting them in the vector. */
1776 char *in
, *out
, *p1
, *p2
, *p3
;
1778 /* Advance P in BUFFER to the next nonblank nocomment line. */
1779 p
= skip_whitespace (p
);
1783 /* Is this a special command that starts with '%'? */
1784 /* Don't allow this for the main specs file, since it would
1785 encourage people to overwrite it. */
1786 if (*p
== '%' && !main_p
)
1789 while (*p
&& *p
!= '\n')
1795 if (!strncmp (p1
, "%include", sizeof ("%include") - 1)
1796 && (p1
[sizeof "%include" - 1] == ' '
1797 || p1
[sizeof "%include" - 1] == '\t'))
1801 p1
+= sizeof ("%include");
1802 while (*p1
== ' ' || *p1
== '\t')
1805 if (*p1
++ != '<' || p
[-2] != '>')
1806 fatal_error ("specs %%include syntax malformed after "
1808 (long) (p1
- buffer
+ 1));
1811 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1812 read_specs (new_filename
? new_filename
: p1
, false, user_p
);
1815 else if (!strncmp (p1
, "%include_noerr", sizeof "%include_noerr" - 1)
1816 && (p1
[sizeof "%include_noerr" - 1] == ' '
1817 || p1
[sizeof "%include_noerr" - 1] == '\t'))
1821 p1
+= sizeof "%include_noerr";
1822 while (*p1
== ' ' || *p1
== '\t')
1825 if (*p1
++ != '<' || p
[-2] != '>')
1826 fatal_error ("specs %%include syntax malformed after "
1828 (long) (p1
- buffer
+ 1));
1831 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1833 read_specs (new_filename
, false, user_p
);
1834 else if (verbose_flag
)
1835 fnotice (stderr
, "could not find specs file %s\n", p1
);
1838 else if (!strncmp (p1
, "%rename", sizeof "%rename" - 1)
1839 && (p1
[sizeof "%rename" - 1] == ' '
1840 || p1
[sizeof "%rename" - 1] == '\t'))
1843 struct spec_list
*sl
;
1844 struct spec_list
*newsl
;
1846 /* Get original name. */
1847 p1
+= sizeof "%rename";
1848 while (*p1
== ' ' || *p1
== '\t')
1851 if (! ISALPHA ((unsigned char) *p1
))
1852 fatal_error ("specs %%rename syntax malformed after "
1854 (long) (p1
- buffer
));
1857 while (*p2
&& !ISSPACE ((unsigned char) *p2
))
1860 if (*p2
!= ' ' && *p2
!= '\t')
1861 fatal_error ("specs %%rename syntax malformed after "
1863 (long) (p2
- buffer
));
1867 while (*p2
== ' ' || *p2
== '\t')
1870 if (! ISALPHA ((unsigned char) *p2
))
1871 fatal_error ("specs %%rename syntax malformed after "
1873 (long) (p2
- buffer
));
1875 /* Get new spec name. */
1877 while (*p3
&& !ISSPACE ((unsigned char) *p3
))
1881 fatal_error ("specs %%rename syntax malformed after "
1883 (long) (p3
- buffer
));
1886 for (sl
= specs
; sl
; sl
= sl
->next
)
1887 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, p1
))
1891 fatal_error ("specs %s spec was not found to be renamed", p1
);
1893 if (strcmp (p1
, p2
) == 0)
1896 for (newsl
= specs
; newsl
; newsl
= newsl
->next
)
1897 if (strcmp (newsl
->name
, p2
) == 0)
1898 fatal_error ("%s: attempt to rename spec %qs to "
1899 "already defined spec %qs",
1904 fnotice (stderr
, "rename spec %s to %s\n", p1
, p2
);
1906 fnotice (stderr
, "spec is '%s'\n\n", *(sl
->ptr_spec
));
1910 set_spec (p2
, *(sl
->ptr_spec
), user_p
);
1912 free (CONST_CAST (char *, *(sl
->ptr_spec
)));
1914 *(sl
->ptr_spec
) = "";
1919 fatal_error ("specs unknown %% command after %ld characters",
1920 (long) (p1
- buffer
));
1923 /* Find the colon that should end the suffix. */
1925 while (*p1
&& *p1
!= ':' && *p1
!= '\n')
1928 /* The colon shouldn't be missing. */
1930 fatal_error ("specs file malformed after %ld characters",
1931 (long) (p1
- buffer
));
1933 /* Skip back over trailing whitespace. */
1935 while (p2
> buffer
&& (p2
[-1] == ' ' || p2
[-1] == '\t'))
1938 /* Copy the suffix to a string. */
1939 suffix
= save_string (p
, p2
- p
);
1940 /* Find the next line. */
1941 p
= skip_whitespace (p1
+ 1);
1943 fatal_error ("specs file malformed after %ld characters",
1944 (long) (p
- buffer
));
1947 /* Find next blank line or end of string. */
1948 while (*p1
&& !(*p1
== '\n' && (p1
[1] == '\n' || p1
[1] == '\0')))
1951 /* Specs end at the blank line and do not include the newline. */
1952 spec
= save_string (p
, p1
- p
);
1955 /* Delete backslash-newline sequences from the spec. */
1960 if (in
[0] == '\\' && in
[1] == '\n')
1962 else if (in
[0] == '#')
1963 while (*in
&& *in
!= '\n')
1971 if (suffix
[0] == '*')
1973 if (! strcmp (suffix
, "*link_command"))
1974 link_command_spec
= spec
;
1976 set_spec (suffix
+ 1, spec
, user_p
);
1980 /* Add this pair to the vector. */
1982 = XRESIZEVEC (struct compiler
, compilers
, n_compilers
+ 2);
1984 compilers
[n_compilers
].suffix
= suffix
;
1985 compilers
[n_compilers
].spec
= spec
;
1987 memset (&compilers
[n_compilers
], 0, sizeof compilers
[n_compilers
]);
1991 link_command_spec
= spec
;
1994 if (link_command_spec
== 0)
1995 fatal_error ("spec file has no spec for linking");
1998 /* Record the names of temporary files we tell compilers to write,
1999 and delete them at the end of the run. */
2001 /* This is the common prefix we use to make temp file names.
2002 It is chosen once for each run of this program.
2003 It is substituted into a spec by %g or %j.
2004 Thus, all temp file names contain this prefix.
2005 In practice, all temp file names start with this prefix.
2007 This prefix comes from the envvar TMPDIR if it is defined;
2008 otherwise, from the P_tmpdir macro if that is defined;
2009 otherwise, in /usr/tmp or /tmp;
2010 or finally the current directory if all else fails. */
2012 static const char *temp_filename
;
2014 /* Length of the prefix. */
2016 static int temp_filename_length
;
2018 /* Define the list of temporary files to delete. */
2023 struct temp_file
*next
;
2026 /* Queue of files to delete on success or failure of compilation. */
2027 static struct temp_file
*always_delete_queue
;
2028 /* Queue of files to delete on failure of compilation. */
2029 static struct temp_file
*failure_delete_queue
;
2031 /* Record FILENAME as a file to be deleted automatically.
2032 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2033 otherwise delete it in any case.
2034 FAIL_DELETE nonzero means delete it if a compilation step fails;
2035 otherwise delete it in any case. */
2038 record_temp_file (const char *filename
, int always_delete
, int fail_delete
)
2040 char *const name
= xstrdup (filename
);
2044 struct temp_file
*temp
;
2045 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
2046 if (! filename_cmp (name
, temp
->name
))
2049 temp
= XNEW (struct temp_file
);
2050 temp
->next
= always_delete_queue
;
2052 always_delete_queue
= temp
;
2059 struct temp_file
*temp
;
2060 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
2061 if (! filename_cmp (name
, temp
->name
))
2067 temp
= XNEW (struct temp_file
);
2068 temp
->next
= failure_delete_queue
;
2070 failure_delete_queue
= temp
;
2076 /* Delete all the temporary files whose names we previously recorded. */
2078 #ifndef DELETE_IF_ORDINARY
2079 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2082 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2083 if (unlink (NAME) < 0) \
2085 perror_with_name (NAME); \
2090 delete_if_ordinary (const char *name
)
2096 printf ("Delete %s? (y or n) ", name
);
2100 while ((c
= getchar ()) != '\n' && c
!= EOF
)
2103 if (i
== 'y' || i
== 'Y')
2105 DELETE_IF_ORDINARY (name
, st
, verbose_flag
);
2109 delete_temp_files (void)
2111 struct temp_file
*temp
;
2113 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
2114 delete_if_ordinary (temp
->name
);
2115 always_delete_queue
= 0;
2118 /* Delete all the files to be deleted on error. */
2121 delete_failure_queue (void)
2123 struct temp_file
*temp
;
2125 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
2126 delete_if_ordinary (temp
->name
);
2130 clear_failure_queue (void)
2132 failure_delete_queue
= 0;
2135 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2137 If DO_MULTI is true iterate over the paths twice, first with multilib
2138 suffix then without, otherwise iterate over the paths once without
2139 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2140 to avoid visiting the same path twice, but we could do better. For
2141 instance, /usr/lib/../lib is considered different from /usr/lib.
2142 At least EXTRA_SPACE chars past the end of the path passed to
2143 CALLBACK are available for use by the callback.
2144 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2146 Returns the value returned by CALLBACK. */
2149 for_each_path (const struct path_prefix
*paths
,
2152 void *(*callback
) (char *, void *),
2153 void *callback_info
)
2155 struct prefix_list
*pl
;
2156 const char *multi_dir
= NULL
;
2157 const char *multi_os_dir
= NULL
;
2158 const char *multiarch_suffix
= NULL
;
2159 const char *multi_suffix
;
2160 const char *just_multi_suffix
;
2163 bool skip_multi_dir
= false;
2164 bool skip_multi_os_dir
= false;
2166 multi_suffix
= machine_suffix
;
2167 just_multi_suffix
= just_machine_suffix
;
2168 if (do_multi
&& multilib_dir
&& strcmp (multilib_dir
, ".") != 0)
2170 multi_dir
= concat (multilib_dir
, dir_separator_str
, NULL
);
2171 multi_suffix
= concat (multi_suffix
, multi_dir
, NULL
);
2172 just_multi_suffix
= concat (just_multi_suffix
, multi_dir
, NULL
);
2174 if (do_multi
&& multilib_os_dir
&& strcmp (multilib_os_dir
, ".") != 0)
2175 multi_os_dir
= concat (multilib_os_dir
, dir_separator_str
, NULL
);
2177 multiarch_suffix
= concat (multiarch_dir
, dir_separator_str
, NULL
);
2181 size_t multi_dir_len
= 0;
2182 size_t multi_os_dir_len
= 0;
2183 size_t multiarch_len
= 0;
2185 size_t just_suffix_len
;
2189 multi_dir_len
= strlen (multi_dir
);
2191 multi_os_dir_len
= strlen (multi_os_dir
);
2192 if (multiarch_suffix
)
2193 multiarch_len
= strlen (multiarch_suffix
);
2194 suffix_len
= strlen (multi_suffix
);
2195 just_suffix_len
= strlen (just_multi_suffix
);
2199 len
= paths
->max_len
+ extra_space
+ 1;
2200 len
+= MAX (MAX (suffix_len
, multi_os_dir_len
), multiarch_len
);
2201 path
= XNEWVEC (char, len
);
2204 for (pl
= paths
->plist
; pl
!= 0; pl
= pl
->next
)
2206 len
= strlen (pl
->prefix
);
2207 memcpy (path
, pl
->prefix
, len
);
2209 /* Look first in MACHINE/VERSION subdirectory. */
2210 if (!skip_multi_dir
)
2212 memcpy (path
+ len
, multi_suffix
, suffix_len
+ 1);
2213 ret
= callback (path
, callback_info
);
2218 /* Some paths are tried with just the machine (ie. target)
2219 subdir. This is used for finding as, ld, etc. */
2221 && pl
->require_machine_suffix
== 2)
2223 memcpy (path
+ len
, just_multi_suffix
, just_suffix_len
+ 1);
2224 ret
= callback (path
, callback_info
);
2229 /* Now try the multiarch path. */
2231 && !pl
->require_machine_suffix
&& multiarch_dir
)
2233 memcpy (path
+ len
, multiarch_suffix
, multiarch_len
+ 1);
2234 ret
= callback (path
, callback_info
);
2239 /* Now try the base path. */
2240 if (!pl
->require_machine_suffix
2241 && !(pl
->os_multilib
? skip_multi_os_dir
: skip_multi_dir
))
2243 const char *this_multi
;
2244 size_t this_multi_len
;
2246 if (pl
->os_multilib
)
2248 this_multi
= multi_os_dir
;
2249 this_multi_len
= multi_os_dir_len
;
2253 this_multi
= multi_dir
;
2254 this_multi_len
= multi_dir_len
;
2258 memcpy (path
+ len
, this_multi
, this_multi_len
+ 1);
2262 ret
= callback (path
, callback_info
);
2270 if (multi_dir
== NULL
&& multi_os_dir
== NULL
)
2273 /* Run through the paths again, this time without multilibs.
2274 Don't repeat any we have already seen. */
2277 free (CONST_CAST (char *, multi_dir
));
2279 free (CONST_CAST (char *, multi_suffix
));
2280 multi_suffix
= machine_suffix
;
2281 free (CONST_CAST (char *, just_multi_suffix
));
2282 just_multi_suffix
= just_machine_suffix
;
2285 skip_multi_dir
= true;
2288 free (CONST_CAST (char *, multi_os_dir
));
2289 multi_os_dir
= NULL
;
2292 skip_multi_os_dir
= true;
2297 free (CONST_CAST (char *, multi_dir
));
2298 free (CONST_CAST (char *, multi_suffix
));
2299 free (CONST_CAST (char *, just_multi_suffix
));
2302 free (CONST_CAST (char *, multi_os_dir
));
2308 /* Callback for build_search_list. Adds path to obstack being built. */
2310 struct add_to_obstack_info
{
2317 add_to_obstack (char *path
, void *data
)
2319 struct add_to_obstack_info
*info
= (struct add_to_obstack_info
*) data
;
2321 if (info
->check_dir
&& !is_directory (path
, false))
2324 if (!info
->first_time
)
2325 obstack_1grow (info
->ob
, PATH_SEPARATOR
);
2327 obstack_grow (info
->ob
, path
, strlen (path
));
2329 info
->first_time
= false;
2333 /* Add or change the value of an environment variable, outputting the
2334 change to standard error if in verbose mode. */
2336 xputenv (const char *string
)
2339 fnotice (stderr
, "%s\n", string
);
2340 putenv (CONST_CAST (char *, string
));
2343 /* Build a list of search directories from PATHS.
2344 PREFIX is a string to prepend to the list.
2345 If CHECK_DIR_P is true we ensure the directory exists.
2346 If DO_MULTI is true, multilib paths are output first, then
2348 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2349 It is also used by the --print-search-dirs flag. */
2352 build_search_list (const struct path_prefix
*paths
, const char *prefix
,
2353 bool check_dir
, bool do_multi
)
2355 struct add_to_obstack_info info
;
2357 info
.ob
= &collect_obstack
;
2358 info
.check_dir
= check_dir
;
2359 info
.first_time
= true;
2361 obstack_grow (&collect_obstack
, prefix
, strlen (prefix
));
2362 obstack_1grow (&collect_obstack
, '=');
2364 for_each_path (paths
, do_multi
, 0, add_to_obstack
, &info
);
2366 obstack_1grow (&collect_obstack
, '\0');
2367 return XOBFINISH (&collect_obstack
, char *);
2370 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2374 putenv_from_prefixes (const struct path_prefix
*paths
, const char *env_var
,
2377 xputenv (build_search_list (paths
, env_var
, true, do_multi
));
2380 /* Check whether NAME can be accessed in MODE. This is like access,
2381 except that it never considers directories to be executable. */
2384 access_check (const char *name
, int mode
)
2390 if (stat (name
, &st
) < 0
2391 || S_ISDIR (st
.st_mode
))
2395 return access (name
, mode
);
2398 /* Callback for find_a_file. Appends the file name to the directory
2399 path. If the resulting file exists in the right mode, return the
2400 full pathname to the file. */
2402 struct file_at_path_info
{
2411 file_at_path (char *path
, void *data
)
2413 struct file_at_path_info
*info
= (struct file_at_path_info
*) data
;
2414 size_t len
= strlen (path
);
2416 memcpy (path
+ len
, info
->name
, info
->name_len
);
2417 len
+= info
->name_len
;
2419 /* Some systems have a suffix for executable files.
2420 So try appending that first. */
2421 if (info
->suffix_len
)
2423 memcpy (path
+ len
, info
->suffix
, info
->suffix_len
+ 1);
2424 if (access_check (path
, info
->mode
) == 0)
2429 if (access_check (path
, info
->mode
) == 0)
2435 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2436 access to check permissions. If DO_MULTI is true, search multilib
2437 paths then non-multilib paths, otherwise do not search multilib paths.
2438 Return 0 if not found, otherwise return its name, allocated with malloc. */
2441 find_a_file (const struct path_prefix
*pprefix
, const char *name
, int mode
,
2444 struct file_at_path_info info
;
2446 #ifdef DEFAULT_ASSEMBLER
2447 if (! strcmp (name
, "as") && access (DEFAULT_ASSEMBLER
, mode
) == 0)
2448 return xstrdup (DEFAULT_ASSEMBLER
);
2451 #ifdef DEFAULT_LINKER
2452 if (! strcmp(name
, "ld") && access (DEFAULT_LINKER
, mode
) == 0)
2453 return xstrdup (DEFAULT_LINKER
);
2456 /* Determine the filename to execute (special case for absolute paths). */
2458 if (IS_ABSOLUTE_PATH (name
))
2460 if (access (name
, mode
) == 0)
2461 return xstrdup (name
);
2467 info
.suffix
= (mode
& X_OK
) != 0 ? HOST_EXECUTABLE_SUFFIX
: "";
2468 info
.name_len
= strlen (info
.name
);
2469 info
.suffix_len
= strlen (info
.suffix
);
2472 return (char*) for_each_path (pprefix
, do_multi
,
2473 info
.name_len
+ info
.suffix_len
,
2474 file_at_path
, &info
);
2477 /* Ranking of prefixes in the sort list. -B prefixes are put before
2480 enum path_prefix_priority
2482 PREFIX_PRIORITY_B_OPT
,
2483 PREFIX_PRIORITY_LAST
2486 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2487 order according to PRIORITY. Within each PRIORITY, new entries are
2490 If WARN is nonzero, we will warn if no file is found
2491 through this prefix. WARN should point to an int
2492 which will be set to 1 if this entry is used.
2494 COMPONENT is the value to be passed to update_path.
2496 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2497 the complete value of machine_suffix.
2498 2 means try both machine_suffix and just_machine_suffix. */
2501 add_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2502 const char *component
, /* enum prefix_priority */ int priority
,
2503 int require_machine_suffix
, int os_multilib
)
2505 struct prefix_list
*pl
, **prev
;
2508 for (prev
= &pprefix
->plist
;
2509 (*prev
) != NULL
&& (*prev
)->priority
<= priority
;
2510 prev
= &(*prev
)->next
)
2513 /* Keep track of the longest prefix. */
2515 prefix
= update_path (prefix
, component
);
2516 len
= strlen (prefix
);
2517 if (len
> pprefix
->max_len
)
2518 pprefix
->max_len
= len
;
2520 pl
= XNEW (struct prefix_list
);
2521 pl
->prefix
= prefix
;
2522 pl
->require_machine_suffix
= require_machine_suffix
;
2523 pl
->priority
= priority
;
2524 pl
->os_multilib
= os_multilib
;
2526 /* Insert after PREV. */
2531 /* Same as add_prefix, but prepending target_system_root to prefix. */
2532 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2534 add_sysrooted_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2535 const char *component
,
2536 /* enum prefix_priority */ int priority
,
2537 int require_machine_suffix
, int os_multilib
)
2539 if (!IS_ABSOLUTE_PATH (prefix
))
2540 fatal_error ("system path %qs is not absolute", prefix
);
2542 if (target_system_root
)
2544 char *sysroot_no_trailing_dir_separator
= xstrdup (target_system_root
);
2545 size_t sysroot_len
= strlen (target_system_root
);
2548 && target_system_root
[sysroot_len
- 1] == DIR_SEPARATOR
)
2549 sysroot_no_trailing_dir_separator
[sysroot_len
- 1] = '\0';
2551 if (target_sysroot_suffix
)
2552 prefix
= concat (sysroot_no_trailing_dir_separator
,
2553 target_sysroot_suffix
, prefix
, NULL
);
2555 prefix
= concat (sysroot_no_trailing_dir_separator
, prefix
, NULL
);
2557 free (sysroot_no_trailing_dir_separator
);
2559 /* We have to override this because GCC's notion of sysroot
2560 moves along with GCC. */
2564 add_prefix (pprefix
, prefix
, component
, priority
,
2565 require_machine_suffix
, os_multilib
);
2568 /* Execute the command specified by the arguments on the current line of spec.
2569 When using pipes, this includes several piped-together commands
2570 with `|' between them.
2572 Return 0 if successful, -1 if failed. */
2578 int n_commands
; /* # of command. */
2580 struct pex_obj
*pex
;
2583 const char *prog
; /* program name. */
2584 const char **argv
; /* vector of args. */
2588 struct command
*commands
; /* each command buffer with above info. */
2590 gcc_assert (!processing_spec_function
);
2594 string
= find_a_file (&exec_prefixes
,
2595 argbuf
[0], X_OK
, false);
2598 insert_wrapper (wrapper_string
);
2601 /* Count # of piped commands. */
2602 for (n_commands
= 1, i
= 0; argbuf
.iterate (i
, &arg
); i
++)
2603 if (strcmp (arg
, "|") == 0)
2606 /* Get storage for each command. */
2607 commands
= (struct command
*) alloca (n_commands
* sizeof (struct command
));
2609 /* Split argbuf into its separate piped processes,
2610 and record info about each one.
2611 Also search for the programs that are to be run. */
2613 argbuf
.safe_push (0);
2615 commands
[0].prog
= argbuf
[0]; /* first command. */
2616 commands
[0].argv
= argbuf
.address ();
2618 if (!wrapper_string
)
2620 string
= find_a_file (&exec_prefixes
, commands
[0].prog
, X_OK
, false);
2621 commands
[0].argv
[0] = (string
) ? string
: commands
[0].argv
[0];
2624 for (n_commands
= 1, i
= 0; argbuf
.iterate (i
, &arg
); i
++)
2625 if (arg
&& strcmp (arg
, "|") == 0)
2626 { /* each command. */
2627 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2628 fatal_error ("-pipe not supported");
2630 argbuf
[i
] = 0; /* Termination of
2632 commands
[n_commands
].prog
= argbuf
[i
+ 1];
2633 commands
[n_commands
].argv
2634 = &(argbuf
.address ())[i
+ 1];
2635 string
= find_a_file (&exec_prefixes
, commands
[n_commands
].prog
,
2638 commands
[n_commands
].argv
[0] = string
;
2642 /* If -v, print what we are about to do, and maybe query. */
2646 /* For help listings, put a blank line between sub-processes. */
2647 if (print_help_list
)
2648 fputc ('\n', stderr
);
2650 /* Print each piped command as a separate line. */
2651 for (i
= 0; i
< n_commands
; i
++)
2653 const char *const *j
;
2655 if (verbose_only_flag
)
2657 for (j
= commands
[i
].argv
; *j
; j
++)
2660 for (p
= *j
; *p
; ++p
)
2661 if (!ISALNUM ((unsigned char) *p
)
2662 && *p
!= '_' && *p
!= '/' && *p
!= '-' && *p
!= '.')
2666 fprintf (stderr
, " \"");
2667 for (p
= *j
; *p
; ++p
)
2669 if (*p
== '"' || *p
== '\\' || *p
== '$')
2670 fputc ('\\', stderr
);
2673 fputc ('"', stderr
);
2675 /* If it's empty, print "". */
2677 fprintf (stderr
, " \"\"");
2679 fprintf (stderr
, " %s", *j
);
2683 for (j
= commands
[i
].argv
; *j
; j
++)
2684 /* If it's empty, print "". */
2686 fprintf (stderr
, " \"\"");
2688 fprintf (stderr
, " %s", *j
);
2690 /* Print a pipe symbol after all but the last command. */
2691 if (i
+ 1 != n_commands
)
2692 fprintf (stderr
, " |");
2693 fprintf (stderr
, "\n");
2696 if (verbose_only_flag
!= 0)
2698 /* verbose_only_flag should act as if the spec was
2699 executed, so increment execution_count before
2700 returning. This prevents spurious warnings about
2701 unused linker input files, etc. */
2706 fnotice (stderr
, "\nGo ahead? (y or n) ");
2710 while (getchar () != '\n')
2713 if (i
!= 'y' && i
!= 'Y')
2718 #ifdef ENABLE_VALGRIND_CHECKING
2719 /* Run the each command through valgrind. To simplify prepending the
2720 path to valgrind and the option "-q" (for quiet operation unless
2721 something triggers), we allocate a separate argv array. */
2723 for (i
= 0; i
< n_commands
; i
++)
2729 for (argc
= 0; commands
[i
].argv
[argc
] != NULL
; argc
++)
2732 argv
= XALLOCAVEC (const char *, argc
+ 3);
2734 argv
[0] = VALGRIND_PATH
;
2736 for (j
= 2; j
< argc
+ 2; j
++)
2737 argv
[j
] = commands
[i
].argv
[j
- 2];
2740 commands
[i
].argv
= argv
;
2741 commands
[i
].prog
= argv
[0];
2745 /* Run each piped subprocess. */
2747 pex
= pex_init (PEX_USE_PIPES
| ((report_times
|| report_times_to_file
)
2748 ? PEX_RECORD_TIMES
: 0),
2749 progname
, temp_filename
);
2751 fatal_error ("pex_init failed: %m");
2753 for (i
= 0; i
< n_commands
; i
++)
2757 const char *string
= commands
[i
].argv
[0];
2759 errmsg
= pex_run (pex
,
2760 ((i
+ 1 == n_commands
? PEX_LAST
: 0)
2761 | (string
== commands
[i
].prog
? PEX_SEARCH
: 0)),
2762 string
, CONST_CAST (char **, commands
[i
].argv
),
2767 fatal_error (errmsg
);
2771 pfatal_with_name (errmsg
);
2775 if (string
!= commands
[i
].prog
)
2776 free (CONST_CAST (char *, string
));
2781 /* Wait for all the subprocesses to finish. */
2785 struct pex_time
*times
= NULL
;
2788 statuses
= (int *) alloca (n_commands
* sizeof (int));
2789 if (!pex_get_status (pex
, n_commands
, statuses
))
2790 fatal_error ("failed to get exit status: %m");
2792 if (report_times
|| report_times_to_file
)
2794 times
= (struct pex_time
*) alloca (n_commands
* sizeof (struct pex_time
));
2795 if (!pex_get_times (pex
, n_commands
, times
))
2796 fatal_error ("failed to get process times: %m");
2801 for (i
= 0; i
< n_commands
; ++i
)
2803 int status
= statuses
[i
];
2805 if (WIFSIGNALED (status
))
2808 /* SIGPIPE is a special case. It happens in -pipe mode
2809 when the compiler dies before the preprocessor is done,
2810 or the assembler dies before the compiler is done.
2811 There's generally been an error already, and this is
2812 just fallout. So don't generate another error unless
2813 we would otherwise have succeeded. */
2814 if (WTERMSIG (status
) == SIGPIPE
2815 && (signal_count
|| greatest_status
>= MIN_FATAL_STATUS
))
2822 internal_error ("%s (program %s)",
2823 strsignal (WTERMSIG (status
)), commands
[i
].prog
);
2825 else if (WIFEXITED (status
)
2826 && WEXITSTATUS (status
) >= MIN_FATAL_STATUS
)
2828 if (WEXITSTATUS (status
) > greatest_status
)
2829 greatest_status
= WEXITSTATUS (status
);
2833 if (report_times
|| report_times_to_file
)
2835 struct pex_time
*pt
= ×
[i
];
2838 ut
= ((double) pt
->user_seconds
2839 + (double) pt
->user_microseconds
/ 1.0e6
);
2840 st
= ((double) pt
->system_seconds
2841 + (double) pt
->system_microseconds
/ 1.0e6
);
2846 fnotice (stderr
, "# %s %.2f %.2f\n",
2847 commands
[i
].prog
, ut
, st
);
2849 if (report_times_to_file
)
2852 const char *const *j
;
2854 fprintf (report_times_to_file
, "%g %g", ut
, st
);
2856 for (j
= &commands
[i
].prog
; *j
; j
= &commands
[i
].argv
[++c
])
2859 for (p
= *j
; *p
; ++p
)
2860 if (*p
== '"' || *p
== '\\' || *p
== '$'
2866 fprintf (report_times_to_file
, " \"");
2867 for (p
= *j
; *p
; ++p
)
2869 if (*p
== '"' || *p
== '\\' || *p
== '$')
2870 fputc ('\\', report_times_to_file
);
2871 fputc (*p
, report_times_to_file
);
2873 fputc ('"', report_times_to_file
);
2876 fprintf (report_times_to_file
, " %s", *j
);
2879 fputc ('\n', report_times_to_file
);
2889 /* Find all the switches given to us
2890 and make a vector describing them.
2891 The elements of the vector are strings, one per switch given.
2892 If a switch uses following arguments, then the `part1' field
2893 is the switch itself and the `args' field
2894 is a null-terminated vector containing the following arguments.
2895 Bits in the `live_cond' field are:
2896 SWITCH_LIVE to indicate this switch is true in a conditional spec.
2897 SWITCH_FALSE to indicate this switch is overridden by a later switch.
2898 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
2899 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
2900 in all do_spec calls afterwards. Used for %<S from self specs.
2901 The `validated' field is nonzero if any spec has looked at this switch;
2902 if it remains zero at the end of the run, it must be meaningless. */
2904 #define SWITCH_LIVE (1 << 0)
2905 #define SWITCH_FALSE (1 << 1)
2906 #define SWITCH_IGNORE (1 << 2)
2907 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
2908 #define SWITCH_KEEP_FOR_GCC (1 << 4)
2914 unsigned int live_cond
;
2920 static struct switchstr
*switches
;
2922 static int n_switches
;
2924 static int n_switches_alloc
;
2926 /* Set to zero if -fcompare-debug is disabled, positive if it's
2927 enabled and we're running the first compilation, negative if it's
2928 enabled and we're running the second compilation. For most of the
2929 time, it's in the range -1..1, but it can be temporarily set to 2
2930 or 3 to indicate that the -fcompare-debug flags didn't come from
2931 the command-line, but rather from the GCC_COMPARE_DEBUG environment
2932 variable, until a synthesized -fcompare-debug flag is added to the
2936 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
2937 int compare_debug_second
;
2939 /* Set to the flags that should be passed to the second compilation in
2940 a -fcompare-debug compilation. */
2941 const char *compare_debug_opt
;
2943 static struct switchstr
*switches_debug_check
[2];
2945 static int n_switches_debug_check
[2];
2947 static int n_switches_alloc_debug_check
[2];
2949 static char *debug_check_temp_file
[2];
2951 /* Language is one of three things:
2953 1) The name of a real programming language.
2954 2) NULL, indicating that no one has figured out
2956 3) '*', indicating that the file should be passed
2961 const char *language
;
2962 struct compiler
*incompiler
;
2967 /* Also a vector of input files specified. */
2969 static struct infile
*infiles
;
2973 static int n_infiles_alloc
;
2975 /* True if multiple input files are being compiled to a single
2978 static bool combine_inputs
;
2980 /* This counts the number of libraries added by lang_specific_driver, so that
2981 we can tell if there were any user supplied any files or libraries. */
2983 static int added_libraries
;
2985 /* And a vector of corresponding output files is made up later. */
2987 const char **outfiles
;
2989 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2991 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2992 is true if we should look for an executable suffix. DO_OBJ
2993 is true if we should look for an object suffix. */
2996 convert_filename (const char *name
, int do_exe ATTRIBUTE_UNUSED
,
2997 int do_obj ATTRIBUTE_UNUSED
)
2999 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3007 len
= strlen (name
);
3009 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3010 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
3011 if (do_obj
&& len
> 2
3012 && name
[len
- 2] == '.'
3013 && name
[len
- 1] == 'o')
3015 obstack_grow (&obstack
, name
, len
- 2);
3016 obstack_grow0 (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
3017 name
= XOBFINISH (&obstack
, const char *);
3021 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3022 /* If there is no filetype, make it the executable suffix (which includes
3023 the "."). But don't get confused if we have just "-o". */
3024 if (! do_exe
|| TARGET_EXECUTABLE_SUFFIX
[0] == 0 || (len
== 2 && name
[0] == '-'))
3027 for (i
= len
- 1; i
>= 0; i
--)
3028 if (IS_DIR_SEPARATOR (name
[i
]))
3031 for (i
++; i
< len
; i
++)
3035 obstack_grow (&obstack
, name
, len
);
3036 obstack_grow0 (&obstack
, TARGET_EXECUTABLE_SUFFIX
,
3037 strlen (TARGET_EXECUTABLE_SUFFIX
));
3038 name
= XOBFINISH (&obstack
, const char *);
3045 /* Display the command line switches accepted by gcc. */
3049 printf (_("Usage: %s [options] file...\n"), progname
);
3050 fputs (_("Options:\n"), stdout
);
3052 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout
);
3053 fputs (_(" --help Display this information\n"), stdout
);
3054 fputs (_(" --target-help Display target specific command line options\n"), stdout
);
3055 fputs (_(" --help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumented}}[,...]\n"), stdout
);
3056 fputs (_(" Display specific types of command line options\n"), stdout
);
3058 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout
);
3059 fputs (_(" --version Display compiler version information\n"), stdout
);
3060 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout
);
3061 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout
);
3062 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout
);
3063 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout
);
3064 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout
);
3065 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout
);
3066 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout
);
3068 -print-multiarch Display the target's normalized GNU triplet, used as\n\
3069 a component in the library path\n"), stdout
);
3070 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout
);
3072 -print-multi-lib Display the mapping between command line options and\n\
3073 multiple library search directories\n"), stdout
);
3074 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout
);
3075 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout
);
3076 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout
);
3077 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout
);
3078 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout
);
3079 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout
);
3080 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout
);
3081 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout
);
3082 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout
);
3083 fputs (_(" -Xclang-only=<arg> Ignore <arg>\n"), stdout
);
3084 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout
);
3085 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout
);
3087 -[no-]canonical-prefixes Specify the path canonicalization for relative\n\
3088 prefixes to other gcc components\n"), stdout
);
3089 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout
);
3090 fputs (_(" -time Time the execution of each subprocess\n"), stdout
);
3091 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout
);
3092 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout
);
3094 --sysroot=<directory> Use <directory> as the root directory for headers\n\
3095 and libraries\n"), stdout
);
3096 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout
);
3097 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout
);
3098 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout
);
3099 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout
);
3100 fputs (_(" -S Compile only; do not assemble or link\n"), stdout
);
3101 fputs (_(" -c Compile and assemble, but do not link\n"), stdout
);
3102 fputs (_(" -o <file> Place the output into <file>\n"), stdout
);
3103 fputs (_(" -pie Create a position independent executable\n"), stdout
);
3104 fputs (_(" -shared Create a shared library\n"), stdout
);
3106 -x <language> Specify the language of the following input files\n\
3107 Permissible languages include: c c++ assembler none\n\
3108 'none' means revert to the default behavior of\n\
3109 guessing the language based on the file's extension\n\
3113 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3114 passed on to the various sub-processes invoked by %s. In order to pass\n\
3115 other options on to these processes the -W<letter> options must be used.\n\
3118 /* The rest of the options are displayed by invocations of the various
3123 add_preprocessor_option (const char *option
, int len
)
3125 preprocessor_options
.safe_push (save_string (option
, len
));
3129 add_assembler_option (const char *option
, int len
)
3131 assembler_options
.safe_push (save_string (option
, len
));
3135 add_linker_option (const char *option
, int len
)
3137 linker_options
.safe_push (save_string (option
, len
));
3140 /* Allocate space for an input file in infiles. */
3145 if (n_infiles_alloc
== 0)
3147 n_infiles_alloc
= 16;
3148 infiles
= XNEWVEC (struct infile
, n_infiles_alloc
);
3150 else if (n_infiles_alloc
== n_infiles
)
3152 n_infiles_alloc
*= 2;
3153 infiles
= XRESIZEVEC (struct infile
, infiles
, n_infiles_alloc
);
3157 /* Store an input file with the given NAME and LANGUAGE in
3161 add_infile (const char *name
, const char *language
)
3164 infiles
[n_infiles
].name
= name
;
3165 infiles
[n_infiles
++].language
= language
;
3168 /* Allocate space for a switch in switches. */
3173 if (n_switches_alloc
== 0)
3175 n_switches_alloc
= 16;
3176 switches
= XNEWVEC (struct switchstr
, n_switches_alloc
);
3178 else if (n_switches_alloc
== n_switches
)
3180 n_switches_alloc
*= 2;
3181 switches
= XRESIZEVEC (struct switchstr
, switches
, n_switches_alloc
);
3185 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3186 as validated if VALIDATED and KNOWN if it is an internal switch. */
3189 save_switch (const char *opt
, size_t n_args
, const char *const *args
,
3190 bool validated
, bool known
)
3193 switches
[n_switches
].part1
= opt
+ 1;
3195 switches
[n_switches
].args
= 0;
3198 switches
[n_switches
].args
= XNEWVEC (const char *, n_args
+ 1);
3199 memcpy (switches
[n_switches
].args
, args
, n_args
* sizeof (const char *));
3200 switches
[n_switches
].args
[n_args
] = NULL
;
3203 switches
[n_switches
].live_cond
= 0;
3204 switches
[n_switches
].validated
= validated
;
3205 switches
[n_switches
].known
= known
;
3206 switches
[n_switches
].ordering
= 0;
3210 /* Handle an option DECODED that is unknown to the option-processing
3214 driver_unknown_option_callback (const struct cl_decoded_option
*decoded
)
3216 const char *opt
= decoded
->arg
;
3217 if (opt
[1] == 'W' && opt
[2] == 'n' && opt
[3] == 'o' && opt
[4] == '-'
3218 && !(decoded
->errors
& CL_ERR_NEGATIVE
))
3220 /* Leave unknown -Wno-* options for the compiler proper, to be
3221 diagnosed only if there are warnings. */
3222 save_switch (decoded
->canonical_option
[0],
3223 decoded
->canonical_option_num_elements
- 1,
3224 &decoded
->canonical_option
[1], false, true);
3227 if (decoded
->opt_index
== OPT_SPECIAL_unknown
)
3229 /* Give it a chance to define it a a spec file. */
3230 save_switch (decoded
->canonical_option
[0],
3231 decoded
->canonical_option_num_elements
- 1,
3232 &decoded
->canonical_option
[1], false, false);
3239 /* Handle an option DECODED that is not marked as CL_DRIVER.
3240 LANG_MASK will always be CL_DRIVER. */
3243 driver_wrong_lang_callback (const struct cl_decoded_option
*decoded
,
3244 unsigned int lang_mask ATTRIBUTE_UNUSED
)
3246 /* At this point, non-driver options are accepted (and expected to
3247 be passed down by specs) unless marked to be rejected by the
3248 driver. Options to be rejected by the driver but accepted by the
3249 compilers proper are treated just like completely unknown
3251 const struct cl_option
*option
= &cl_options
[decoded
->opt_index
];
3253 if (option
->cl_reject_driver
)
3254 error ("unrecognized command line option %qs",
3255 decoded
->orig_option_with_args_text
);
3257 save_switch (decoded
->canonical_option
[0],
3258 decoded
->canonical_option_num_elements
- 1,
3259 &decoded
->canonical_option
[1], false, true);
3262 static const char *spec_lang
= 0;
3263 static int last_language_n_infiles
;
3265 /* Handle a driver option; arguments and return value as for
3269 driver_handle_option (struct gcc_options
*opts
,
3270 struct gcc_options
*opts_set
,
3271 const struct cl_decoded_option
*decoded
,
3272 unsigned int lang_mask ATTRIBUTE_UNUSED
, int kind
,
3274 const struct cl_option_handlers
*handlers ATTRIBUTE_UNUSED
,
3275 diagnostic_context
*dc
)
3277 size_t opt_index
= decoded
->opt_index
;
3278 const char *arg
= decoded
->arg
;
3279 const char *compare_debug_replacement_opt
;
3280 int value
= decoded
->value
;
3281 bool validated
= false;
3282 bool do_save
= true;
3284 gcc_assert (opts
== &global_options
);
3285 gcc_assert (opts_set
== &global_options_set
);
3286 gcc_assert (kind
== DK_UNSPECIFIED
);
3287 gcc_assert (loc
== UNKNOWN_LOCATION
);
3288 gcc_assert (dc
== global_dc
);
3294 struct spec_list
*sl
;
3296 for (sl
= specs
; sl
; sl
= sl
->next
)
3297 printf ("*%s:\n%s\n\n", sl
->name
, *(sl
->ptr_spec
));
3298 if (link_command_spec
)
3299 printf ("*link_command:\n%s\n\n", link_command_spec
);
3303 case OPT_dumpversion
:
3304 printf ("%s\n", spec_version
);
3307 case OPT_dumpmachine
:
3308 printf ("%s\n", spec_machine
);
3314 /* CPP driver cannot obtain switch from cc1_options. */
3316 add_preprocessor_option ("--version", strlen ("--version"));
3317 add_assembler_option ("--version", strlen ("--version"));
3318 add_linker_option ("--version", strlen ("--version"));
3322 print_help_list
= 1;
3324 /* CPP driver cannot obtain switch from cc1_options. */
3326 add_preprocessor_option ("--help", 6);
3327 add_assembler_option ("--help", 6);
3328 add_linker_option ("--help", 6);
3332 print_subprocess_help
= 2;
3335 case OPT__target_help
:
3336 print_subprocess_help
= 1;
3338 /* CPP driver cannot obtain switch from cc1_options. */
3340 add_preprocessor_option ("--target-help", 13);
3341 add_assembler_option ("--target-help", 13);
3342 add_linker_option ("--target-help", 13);
3345 case OPT__no_sysroot_suffix
:
3346 case OPT_pass_exit_codes
:
3347 case OPT_print_search_dirs
:
3348 case OPT_print_file_name_
:
3349 case OPT_print_prog_name_
:
3350 case OPT_print_multi_lib
:
3351 case OPT_print_multi_directory
:
3352 case OPT_print_sysroot
:
3353 case OPT_print_multi_os_directory
:
3354 case OPT_print_multiarch
:
3355 case OPT_print_sysroot_headers_suffix
:
3358 /* These options set the variables specified in common.opt
3359 automatically, and do not need to be saved for spec
3364 case OPT_print_libgcc_file_name
:
3365 print_file_name
= "libgcc.a";
3369 case OPT_fcompare_debug_second
:
3370 compare_debug_second
= 1;
3373 case OPT_fcompare_debug
:
3377 compare_debug_replacement_opt
= "-fcompare-debug=";
3379 goto compare_debug_with_arg
;
3382 compare_debug_replacement_opt
= "-fcompare-debug=-gtoggle";
3384 goto compare_debug_with_arg
;
3391 case OPT_fcompare_debug_
:
3392 compare_debug_replacement_opt
= decoded
->canonical_option
[0];
3393 compare_debug_with_arg
:
3394 gcc_assert (decoded
->canonical_option_num_elements
== 1);
3395 gcc_assert (arg
!= NULL
);
3400 if (compare_debug
< 0)
3401 compare_debug_opt
= NULL
;
3403 compare_debug_opt
= arg
;
3404 save_switch (compare_debug_replacement_opt
, 0, NULL
, validated
, true);
3410 /* Pass the rest of this option to the assembler. */
3412 /* Split the argument at commas. */
3414 for (j
= 0; arg
[j
]; j
++)
3417 add_assembler_option (arg
+ prev
, j
- prev
);
3421 /* Record the part after the last comma. */
3422 add_assembler_option (arg
+ prev
, j
- prev
);
3430 /* Pass the rest of this option to the preprocessor. */
3432 /* Split the argument at commas. */
3434 for (j
= 0; arg
[j
]; j
++)
3437 add_preprocessor_option (arg
+ prev
, j
- prev
);
3441 /* Record the part after the last comma. */
3442 add_preprocessor_option (arg
+ prev
, j
- prev
);
3450 /* Split the argument at commas. */
3452 for (j
= 0; arg
[j
]; j
++)
3455 add_infile (save_string (arg
+ prev
, j
- prev
), "*");
3458 /* Record the part after the last comma. */
3459 add_infile (arg
+ prev
, "*");
3465 add_infile (arg
, "*");
3469 case OPT_Xpreprocessor
:
3470 add_preprocessor_option (arg
, strlen (arg
));
3474 case OPT_Xassembler
:
3475 add_assembler_option (arg
, strlen (arg
));
3480 /* POSIX allows separation of -l and the lib arg; canonicalize
3481 by concatenating -l with its arg */
3482 add_infile (concat ("-l", arg
, NULL
), "*");
3487 /* Similarly, canonicalize -L for linkers that may not accept
3488 separate arguments. */
3489 save_switch (concat ("-L", arg
, NULL
), 0, NULL
, validated
, true);
3494 save_switch (concat ("-F", arg
, NULL
), 0, NULL
, validated
, true);
3497 case OPT_save_temps
:
3498 save_temps_flag
= SAVE_TEMPS_CWD
;
3502 case OPT_save_temps_
:
3503 if (strcmp (arg
, "cwd") == 0)
3504 save_temps_flag
= SAVE_TEMPS_CWD
;
3505 else if (strcmp (arg
, "obj") == 0
3506 || strcmp (arg
, "object") == 0)
3507 save_temps_flag
= SAVE_TEMPS_OBJ
;
3509 fatal_error ("%qs is an unknown -save-temps option",
3510 decoded
->orig_option_with_args_text
);
3513 case OPT_canonical_prefixes
:
3514 case OPT_no_canonical_prefixes
:
3515 /* Already handled as a special case, so ignored here. */
3521 /* These options set the variables specified in common.opt
3522 automatically, but do need to be saved for spec
3528 struct user_specs
*user
= XNEW (struct user_specs
);
3530 user
->next
= (struct user_specs
*) 0;
3531 user
->filename
= arg
;
3532 if (user_specs_tail
)
3533 user_specs_tail
->next
= user
;
3535 user_specs_head
= user
;
3536 user_specs_tail
= user
;
3542 target_system_root
= arg
;
3543 target_system_root_changed
= 1;
3548 if (report_times_to_file
)
3549 fclose (report_times_to_file
);
3550 report_times_to_file
= fopen (arg
, "a");
3556 This is similar to -v except that there is no execution
3557 of the commands and the echoed arguments are quoted. It
3558 is intended for use in shell scripts to capture the
3559 driver-generated command line. */
3560 verbose_only_flag
++;
3567 size_t len
= strlen (arg
);
3569 /* Catch the case where the user has forgotten to append a
3570 directory separator to the path. Note, they may be using
3571 -B to add an executable name prefix, eg "i386-elf-", in
3572 order to distinguish between multiple installations of
3573 GCC in the same directory. Hence we must check to see
3574 if appending a directory separator actually makes a
3575 valid directory name. */
3576 if (!IS_DIR_SEPARATOR (arg
[len
- 1])
3577 && is_directory (arg
, false))
3579 char *tmp
= XNEWVEC (char, len
+ 2);
3581 tmp
[len
] = DIR_SEPARATOR
;
3586 add_prefix (&exec_prefixes
, arg
, NULL
,
3587 PREFIX_PRIORITY_B_OPT
, 0, 0);
3588 add_prefix (&startfile_prefixes
, arg
, NULL
,
3589 PREFIX_PRIORITY_B_OPT
, 0, 0);
3590 add_prefix (&include_prefixes
, arg
, NULL
,
3591 PREFIX_PRIORITY_B_OPT
, 0, 0);
3598 if (!strcmp (spec_lang
, "none"))
3599 /* Suppress the warning if -xnone comes after the last input
3600 file, because alternate command interfaces like g++ might
3601 find it useful to place -xnone after each input file. */
3604 last_language_n_infiles
= n_infiles
;
3610 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3611 arg
= convert_filename (arg
, ! have_c
, 0);
3613 /* Save the output name in case -save-temps=obj was used. */
3614 save_temps_prefix
= xstrdup (arg
);
3615 /* On some systems, ld cannot handle "-o" without a space. So
3616 split the option from its argument. */
3617 save_switch ("-o", 1, &arg
, validated
, true);
3620 case OPT_static_libgcc
:
3621 case OPT_shared_libgcc
:
3622 case OPT_static_libgfortran
:
3623 case OPT_static_libstdc__
:
3624 /* These are always valid, since gcc.c itself understands the
3625 first two, gfortranspec.c understands -static-libgfortran and
3626 g++spec.c understands -static-libstdc++ */
3631 /* Various driver options need no special processing at this
3632 point, having been handled in a prescan above or being
3633 handled by specs. */
3638 save_switch (decoded
->canonical_option
[0],
3639 decoded
->canonical_option_num_elements
- 1,
3640 &decoded
->canonical_option
[1], validated
, true);
3644 /* Put the driver's standard set of option handlers in *HANDLERS. */
3647 set_option_handlers (struct cl_option_handlers
*handlers
)
3649 handlers
->unknown_option_callback
= driver_unknown_option_callback
;
3650 handlers
->wrong_lang_callback
= driver_wrong_lang_callback
;
3651 handlers
->num_handlers
= 3;
3652 handlers
->handlers
[0].handler
= driver_handle_option
;
3653 handlers
->handlers
[0].mask
= CL_DRIVER
;
3654 handlers
->handlers
[1].handler
= common_handle_option
;
3655 handlers
->handlers
[1].mask
= CL_COMMON
;
3656 handlers
->handlers
[2].handler
= target_handle_option
;
3657 handlers
->handlers
[2].mask
= CL_TARGET
;
3660 /* Create the vector `switches' and its contents.
3661 Store its length in `n_switches'. */
3664 process_command (unsigned int decoded_options_count
,
3665 struct cl_decoded_option
*decoded_options
)
3669 char *tooldir_prefix
, *tooldir_prefix2
;
3670 char *(*get_relative_prefix
) (const char *, const char *,
3671 const char *) = NULL
;
3672 struct cl_option_handlers handlers
;
3675 gcc_exec_prefix
= getenv ("GCC_EXEC_PREFIX");
3679 added_libraries
= 0;
3681 /* Figure compiler version from version string. */
3683 compiler_version
= temp1
= xstrdup (version_string
);
3685 for (; *temp1
; ++temp1
)
3694 /* Handle any -[no-]canonical-prefixes flags early, to assign the function
3695 that builds relative prefixes. This function creates default search
3696 paths that are needed later in normal option handling. */
3698 for (j
= 1; j
< decoded_options_count
; j
++)
3700 if (decoded_options
[j
].opt_index
== OPT_canonical_prefixes
)
3701 get_relative_prefix
= make_relative_prefix
;
3702 else if (decoded_options
[j
].opt_index
== OPT_no_canonical_prefixes
)
3703 get_relative_prefix
= make_relative_prefix_ignore_links
;
3705 if (! get_relative_prefix
)
3707 #ifdef ENABLE_CANONICAL_PREFIXES
3708 get_relative_prefix
= make_relative_prefix
;
3710 get_relative_prefix
= make_relative_prefix_ignore_links
;
3714 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3715 see if we can create it from the pathname specified in
3716 decoded_options[0].arg. */
3718 gcc_libexec_prefix
= standard_libexec_prefix
;
3720 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3721 if (!gcc_exec_prefix
)
3723 gcc_exec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3724 standard_bindir_prefix
,
3725 standard_exec_prefix
);
3726 gcc_libexec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3727 standard_bindir_prefix
,
3728 standard_libexec_prefix
);
3729 if (gcc_exec_prefix
)
3730 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix
, NULL
));
3734 /* make_relative_prefix requires a program name, but
3735 GCC_EXEC_PREFIX is typically a directory name with a trailing
3736 / (which is ignored by make_relative_prefix), so append a
3738 char *tmp_prefix
= concat (gcc_exec_prefix
, "gcc", NULL
);
3739 gcc_libexec_prefix
= get_relative_prefix (tmp_prefix
,
3740 standard_exec_prefix
,
3741 standard_libexec_prefix
);
3743 /* The path is unrelocated, so fallback to the original setting. */
3744 if (!gcc_libexec_prefix
)
3745 gcc_libexec_prefix
= standard_libexec_prefix
;
3751 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3752 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3753 or an automatically created GCC_EXEC_PREFIX from
3754 decoded_options[0].arg. */
3756 /* Do language-specific adjustment/addition of flags. */
3757 lang_specific_driver (&decoded_options
, &decoded_options_count
,
3760 if (gcc_exec_prefix
)
3762 int len
= strlen (gcc_exec_prefix
);
3764 if (len
> (int) sizeof ("/lib/gcc/") - 1
3765 && (IS_DIR_SEPARATOR (gcc_exec_prefix
[len
-1])))
3767 temp
= gcc_exec_prefix
+ len
- sizeof ("/lib/gcc/") + 1;
3768 if (IS_DIR_SEPARATOR (*temp
)
3769 && filename_ncmp (temp
+ 1, "lib", 3) == 0
3770 && IS_DIR_SEPARATOR (temp
[4])
3771 && filename_ncmp (temp
+ 5, "gcc", 3) == 0)
3772 len
-= sizeof ("/lib/gcc/") - 1;
3775 set_std_prefix (gcc_exec_prefix
, len
);
3776 add_prefix (&exec_prefixes
, gcc_libexec_prefix
, "GCC",
3777 PREFIX_PRIORITY_LAST
, 0, 0);
3778 add_prefix (&startfile_prefixes
, gcc_exec_prefix
, "GCC",
3779 PREFIX_PRIORITY_LAST
, 0, 0);
3782 /* COMPILER_PATH and LIBRARY_PATH have values
3783 that are lists of directory names with colons. */
3785 temp
= getenv ("COMPILER_PATH");
3788 const char *startp
, *endp
;
3789 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3791 startp
= endp
= temp
;
3794 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3796 strncpy (nstore
, startp
, endp
- startp
);
3798 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3799 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3801 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3802 nstore
[endp
- startp
+ 1] = 0;
3805 nstore
[endp
- startp
] = 0;
3806 add_prefix (&exec_prefixes
, nstore
, 0,
3807 PREFIX_PRIORITY_LAST
, 0, 0);
3808 add_prefix (&include_prefixes
, nstore
, 0,
3809 PREFIX_PRIORITY_LAST
, 0, 0);
3812 endp
= startp
= endp
+ 1;
3819 temp
= getenv (LIBRARY_PATH_ENV
);
3820 if (temp
&& *cross_compile
== '0')
3822 const char *startp
, *endp
;
3823 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3825 startp
= endp
= temp
;
3828 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3830 strncpy (nstore
, startp
, endp
- startp
);
3832 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3833 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3835 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3836 nstore
[endp
- startp
+ 1] = 0;
3839 nstore
[endp
- startp
] = 0;
3840 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3841 PREFIX_PRIORITY_LAST
, 0, 1);
3844 endp
= startp
= endp
+ 1;
3851 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3852 temp
= getenv ("LPATH");
3853 if (temp
&& *cross_compile
== '0')
3855 const char *startp
, *endp
;
3856 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3858 startp
= endp
= temp
;
3861 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3863 strncpy (nstore
, startp
, endp
- startp
);
3865 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3866 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3868 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3869 nstore
[endp
- startp
+ 1] = 0;
3872 nstore
[endp
- startp
] = 0;
3873 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3874 PREFIX_PRIORITY_LAST
, 0, 1);
3877 endp
= startp
= endp
+ 1;
3884 /* Process the options and store input files and switches in their
3887 last_language_n_infiles
= -1;
3889 set_option_handlers (&handlers
);
3891 for (j
= 1; j
< decoded_options_count
; j
++)
3893 switch (decoded_options
[j
].opt_index
)
3905 for (j
= 1; j
< decoded_options_count
; j
++)
3907 if (decoded_options
[j
].opt_index
== OPT_SPECIAL_input_file
)
3909 const char *arg
= decoded_options
[j
].arg
;
3910 const char *p
= strrchr (arg
, '@');
3914 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3915 arg
= convert_filename (arg
, 0, access (arg
, F_OK
));
3917 /* For LTO static archive support we handle input file
3918 specifications that are composed of a filename and
3919 an offset like FNAME@OFFSET. */
3922 && sscanf (p
, "@%li%n", &offset
, &consumed
) >= 1
3923 && strlen (p
) == (unsigned int)consumed
)
3925 fname
= (char *)xmalloc (p
- arg
+ 1);
3926 memcpy (fname
, arg
, p
- arg
);
3927 fname
[p
- arg
] = '\0';
3928 /* Only accept non-stdin and existing FNAME parts, otherwise
3929 try with the full name. */
3930 if (strcmp (fname
, "-") == 0 || access (fname
, F_OK
) < 0)
3933 fname
= xstrdup (arg
);
3937 fname
= xstrdup (arg
);
3939 if (strcmp (fname
, "-") != 0 && access (fname
, F_OK
) < 0)
3940 perror_with_name (fname
);
3942 add_infile (arg
, spec_lang
);
3948 read_cmdline_option (&global_options
, &global_options_set
,
3949 decoded_options
+ j
, UNKNOWN_LOCATION
,
3950 CL_DRIVER
, &handlers
, global_dc
);
3953 /* If -save-temps=obj and -o name, create the prefix to use for %b.
3954 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
3955 if (save_temps_flag
== SAVE_TEMPS_OBJ
&& save_temps_prefix
!= NULL
)
3957 save_temps_length
= strlen (save_temps_prefix
);
3958 temp
= strrchr (lbasename (save_temps_prefix
), '.');
3961 save_temps_length
-= strlen (temp
);
3962 save_temps_prefix
[save_temps_length
] = '\0';
3966 else if (save_temps_prefix
!= NULL
)
3968 free (save_temps_prefix
);
3969 save_temps_prefix
= NULL
;
3972 if (save_temps_flag
&& use_pipes
)
3974 /* -save-temps overrides -pipe, so that temp files are produced */
3975 if (save_temps_flag
)
3976 warning (0, "-pipe ignored because -save-temps specified");
3982 const char *gcd
= getenv ("GCC_COMPARE_DEBUG");
3984 if (gcd
&& gcd
[0] == '-')
3987 compare_debug_opt
= gcd
;
3989 else if (gcd
&& *gcd
&& strcmp (gcd
, "0"))
3992 compare_debug_opt
= "-gtoggle";
3995 else if (compare_debug
< 0)
3998 gcc_assert (!compare_debug_opt
);
4001 /* Set up the search paths. We add directories that we expect to
4002 contain GNU Toolchain components before directories specified by
4003 the machine description so that we will find GNU components (like
4004 the GNU assembler) before those of the host system. */
4006 /* If we don't know where the toolchain has been installed, use the
4007 configured-in locations. */
4008 if (!gcc_exec_prefix
)
4011 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "GCC",
4012 PREFIX_PRIORITY_LAST
, 1, 0);
4013 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "BINUTILS",
4014 PREFIX_PRIORITY_LAST
, 2, 0);
4015 add_prefix (&exec_prefixes
, standard_exec_prefix
, "BINUTILS",
4016 PREFIX_PRIORITY_LAST
, 2, 0);
4018 add_prefix (&startfile_prefixes
, standard_exec_prefix
, "BINUTILS",
4019 PREFIX_PRIORITY_LAST
, 1, 0);
4022 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix
));
4023 tooldir_prefix2
= concat (tooldir_base_prefix
, spec_machine
,
4024 dir_separator_str
, NULL
);
4026 /* Look for tools relative to the location from which the driver is
4027 running, or, if that is not available, the configured prefix. */
4029 = concat (gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
4030 spec_machine
, dir_separator_str
,
4031 spec_version
, dir_separator_str
, tooldir_prefix2
, NULL
);
4032 free (tooldir_prefix2
);
4034 add_prefix (&exec_prefixes
,
4035 concat (tooldir_prefix
, "bin", dir_separator_str
, NULL
),
4036 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 0);
4037 add_prefix (&startfile_prefixes
,
4038 concat (tooldir_prefix
, "lib", dir_separator_str
, NULL
),
4039 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 1);
4040 free (tooldir_prefix
);
4042 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
4043 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
4044 then consider it to relocate with the rest of the GCC installation
4045 if GCC_EXEC_PREFIX is set.
4046 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
4047 if (target_system_root
&& !target_system_root_changed
&& gcc_exec_prefix
)
4049 char *tmp_prefix
= get_relative_prefix (decoded_options
[0].arg
,
4050 standard_bindir_prefix
,
4051 target_system_root
);
4052 if (tmp_prefix
&& access_check (tmp_prefix
, F_OK
) == 0)
4054 target_system_root
= tmp_prefix
;
4055 target_system_root_changed
= 1;
4060 /* More prefixes are enabled in main, after we read the specs file
4061 and determine whether this is cross-compilation or not. */
4063 if (n_infiles
== last_language_n_infiles
&& spec_lang
!= 0)
4064 warning (0, "%<-x %s%> after last input file has no effect", spec_lang
);
4066 /* Synthesize -fcompare-debug flag from the GCC_COMPARE_DEBUG
4067 environment variable. */
4068 if (compare_debug
== 2 || compare_debug
== 3)
4070 const char *opt
= concat ("-fcompare-debug=", compare_debug_opt
, NULL
);
4071 save_switch (opt
, 0, NULL
, false, true);
4075 /* Ensure we only invoke each subprocess once. */
4076 if (print_subprocess_help
|| print_help_list
|| print_version
)
4080 /* Create a dummy input file, so that we can pass
4081 the help option on to the various sub-processes. */
4082 add_infile ("help-dummy", "c");
4086 switches
[n_switches
].part1
= 0;
4088 infiles
[n_infiles
].name
= 0;
4091 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4092 and place that in the environment. */
4095 set_collect_gcc_options (void)
4100 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4102 obstack_grow (&collect_obstack
, "COLLECT_GCC_OPTIONS=",
4103 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4106 for (i
= 0; (int) i
< n_switches
; i
++)
4108 const char *const *args
;
4111 obstack_grow (&collect_obstack
, " ", 1);
4115 /* Ignore elided switches. */
4116 if ((switches
[i
].live_cond
4117 & (SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
))
4121 obstack_grow (&collect_obstack
, "'-", 2);
4122 q
= switches
[i
].part1
;
4123 while ((p
= strchr (q
, '\'')))
4125 obstack_grow (&collect_obstack
, q
, p
- q
);
4126 obstack_grow (&collect_obstack
, "'\\''", 4);
4129 obstack_grow (&collect_obstack
, q
, strlen (q
));
4130 obstack_grow (&collect_obstack
, "'", 1);
4132 for (args
= switches
[i
].args
; args
&& *args
; args
++)
4134 obstack_grow (&collect_obstack
, " '", 2);
4136 while ((p
= strchr (q
, '\'')))
4138 obstack_grow (&collect_obstack
, q
, p
- q
);
4139 obstack_grow (&collect_obstack
, "'\\''", 4);
4142 obstack_grow (&collect_obstack
, q
, strlen (q
));
4143 obstack_grow (&collect_obstack
, "'", 1);
4146 obstack_grow (&collect_obstack
, "\0", 1);
4147 xputenv (XOBFINISH (&collect_obstack
, char *));
4150 /* Process a spec string, accumulating and running commands. */
4152 /* These variables describe the input file name.
4153 input_file_number is the index on outfiles of this file,
4154 so that the output file name can be stored for later use by %o.
4155 input_basename is the start of the part of the input file
4156 sans all directory names, and basename_length is the number
4157 of characters starting there excluding the suffix .c or whatever. */
4159 static const char *gcc_input_filename
;
4160 static int input_file_number
;
4161 size_t input_filename_length
;
4162 static int basename_length
;
4163 static int suffixed_basename_length
;
4164 static const char *input_basename
;
4165 static const char *input_suffix
;
4166 #ifndef HOST_LACKS_INODE_NUMBERS
4167 static struct stat input_stat
;
4169 static int input_stat_set
;
4171 /* The compiler used to process the current input file. */
4172 static struct compiler
*input_file_compiler
;
4174 /* These are variables used within do_spec and do_spec_1. */
4176 /* Nonzero if an arg has been started and not yet terminated
4177 (with space, tab or newline). */
4178 static int arg_going
;
4180 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4181 is a temporary file name. */
4182 static int delete_this_arg
;
4184 /* Nonzero means %w has been seen; the next arg to be terminated
4185 is the output file name of this compilation. */
4186 static int this_is_output_file
;
4188 /* Nonzero means %s has been seen; the next arg to be terminated
4189 is the name of a library file and we should try the standard
4190 search dirs for it. */
4191 static int this_is_library_file
;
4193 /* Nonzero means %T has been seen; the next arg to be terminated
4194 is the name of a linker script and we should try all of the
4195 standard search dirs for it. If it is found insert a --script
4196 command line switch and then substitute the full path in place,
4197 otherwise generate an error message. */
4198 static int this_is_linker_script
;
4200 /* Nonzero means that the input of this command is coming from a pipe. */
4201 static int input_from_pipe
;
4203 /* Nonnull means substitute this for any suffix when outputting a switches
4205 static const char *suffix_subst
;
4207 /* If there is an argument being accumulated, terminate it and store it. */
4210 end_going_arg (void)
4216 obstack_1grow (&obstack
, 0);
4217 string
= XOBFINISH (&obstack
, const char *);
4218 if (this_is_library_file
)
4219 string
= find_file (string
);
4220 if (this_is_linker_script
)
4222 char * full_script_path
= find_a_file (&startfile_prefixes
, string
, R_OK
, true);
4224 if (full_script_path
== NULL
)
4226 error ("unable to locate default linker script %qs in the library search paths", string
);
4227 /* Script was not found on search path. */
4230 store_arg ("--script", false, false);
4231 string
= full_script_path
;
4233 store_arg (string
, delete_this_arg
, this_is_output_file
);
4234 if (this_is_output_file
)
4235 outfiles
[input_file_number
] = string
;
4241 /* Parse the WRAPPER string which is a comma separated list of the command line
4242 and insert them into the beginning of argbuf. */
4245 insert_wrapper (const char *wrapper
)
4249 char *buf
= xstrdup (wrapper
);
4251 unsigned int old_length
= argbuf
.length ();
4259 while ((p
= strchr (p
, ',')) != NULL
);
4261 argbuf
.safe_grow (old_length
+ n
);
4262 memmove (argbuf
.address () + n
,
4264 old_length
* sizeof (const_char_p
));
4278 while ((p
= strchr (p
, ',')) != NULL
);
4279 gcc_assert (i
== n
);
4282 /* Process the spec SPEC and run the commands specified therein.
4283 Returns 0 if the spec is successfully processed; -1 if failed. */
4286 do_spec (const char *spec
)
4290 value
= do_spec_2 (spec
);
4292 /* Force out any unfinished command.
4293 If -pipe, this forces out the last command if it ended in `|'. */
4296 if (argbuf
.length () > 0
4297 && !strcmp (argbuf
.last (), "|"))
4300 set_collect_gcc_options ();
4302 if (argbuf
.length () > 0)
4310 do_spec_2 (const char *spec
)
4316 delete_this_arg
= 0;
4317 this_is_output_file
= 0;
4318 this_is_library_file
= 0;
4319 this_is_linker_script
= 0;
4320 input_from_pipe
= 0;
4321 suffix_subst
= NULL
;
4323 result
= do_spec_1 (spec
, 0, NULL
);
4331 /* Process the given spec string and add any new options to the end
4332 of the switches/n_switches array. */
4335 do_option_spec (const char *name
, const char *spec
)
4337 unsigned int i
, value_count
, value_len
;
4338 const char *p
, *q
, *value
;
4339 char *tmp_spec
, *tmp_spec_p
;
4341 if (configure_default_options
[0].name
== NULL
)
4344 for (i
= 0; i
< ARRAY_SIZE (configure_default_options
); i
++)
4345 if (strcmp (configure_default_options
[i
].name
, name
) == 0)
4347 if (i
== ARRAY_SIZE (configure_default_options
))
4350 value
= configure_default_options
[i
].value
;
4351 value_len
= strlen (value
);
4353 /* Compute the size of the final spec. */
4356 while ((p
= strstr (p
, "%(VALUE)")) != NULL
)
4362 /* Replace each %(VALUE) by the specified value. */
4363 tmp_spec
= (char *) alloca (strlen (spec
) + 1
4364 + value_count
* (value_len
- strlen ("%(VALUE)")));
4365 tmp_spec_p
= tmp_spec
;
4367 while ((p
= strstr (q
, "%(VALUE)")) != NULL
)
4369 memcpy (tmp_spec_p
, q
, p
- q
);
4370 tmp_spec_p
= tmp_spec_p
+ (p
- q
);
4371 memcpy (tmp_spec_p
, value
, value_len
);
4372 tmp_spec_p
+= value_len
;
4373 q
= p
+ strlen ("%(VALUE)");
4375 strcpy (tmp_spec_p
, q
);
4377 do_self_spec (tmp_spec
);
4380 /* Process the given spec string and add any new options to the end
4381 of the switches/n_switches array. */
4384 do_self_spec (const char *spec
)
4389 do_spec_1 (" ", 0, NULL
);
4391 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4392 do_self_specs adds the replacements to switches array, so it shouldn't
4393 be processed afterwards. */
4394 for (i
= 0; i
< n_switches
; i
++)
4395 if ((switches
[i
].live_cond
& SWITCH_IGNORE
))
4396 switches
[i
].live_cond
|= SWITCH_IGNORE_PERMANENTLY
;
4398 if (argbuf
.length () > 0)
4400 const char **argbuf_copy
;
4401 struct cl_decoded_option
*decoded_options
;
4402 struct cl_option_handlers handlers
;
4403 unsigned int decoded_options_count
;
4406 /* Create a copy of argbuf with a dummy argv[0] entry for
4407 decode_cmdline_options_to_array. */
4408 argbuf_copy
= XNEWVEC (const char *,
4409 argbuf
.length () + 1);
4410 argbuf_copy
[0] = "";
4411 memcpy (argbuf_copy
+ 1, argbuf
.address (),
4412 argbuf
.length () * sizeof (const char *));
4414 decode_cmdline_options_to_array (argbuf
.length () + 1,
4416 CL_DRIVER
, &decoded_options
,
4417 &decoded_options_count
);
4420 set_option_handlers (&handlers
);
4422 for (j
= 1; j
< decoded_options_count
; j
++)
4424 switch (decoded_options
[j
].opt_index
)
4426 case OPT_SPECIAL_input_file
:
4427 /* Specs should only generate options, not input
4429 if (strcmp (decoded_options
[j
].arg
, "-") != 0)
4430 fatal_error ("switch %qs does not start with %<-%>",
4431 decoded_options
[j
].arg
);
4433 fatal_error ("spec-generated switch is just %<-%>");
4436 case OPT_fcompare_debug_second
:
4437 case OPT_fcompare_debug
:
4438 case OPT_fcompare_debug_
:
4440 /* Avoid duplicate processing of some options from
4441 compare-debug specs; just save them here. */
4442 save_switch (decoded_options
[j
].canonical_option
[0],
4443 (decoded_options
[j
].canonical_option_num_elements
4445 &decoded_options
[j
].canonical_option
[1], false, true);
4449 read_cmdline_option (&global_options
, &global_options_set
,
4450 decoded_options
+ j
, UNKNOWN_LOCATION
,
4451 CL_DRIVER
, &handlers
, global_dc
);
4457 switches
[n_switches
].part1
= 0;
4461 /* Callback for processing %D and %I specs. */
4463 struct spec_path_info
{
4468 bool separate_options
;
4472 spec_path (char *path
, void *data
)
4474 struct spec_path_info
*info
= (struct spec_path_info
*) data
;
4478 if (info
->omit_relative
&& !IS_ABSOLUTE_PATH (path
))
4481 if (info
->append_len
!= 0)
4483 len
= strlen (path
);
4484 memcpy (path
+ len
, info
->append
, info
->append_len
+ 1);
4487 if (!is_directory (path
, true))
4490 do_spec_1 (info
->option
, 1, NULL
);
4491 if (info
->separate_options
)
4492 do_spec_1 (" ", 0, NULL
);
4494 if (info
->append_len
== 0)
4496 len
= strlen (path
);
4497 save
= path
[len
- 1];
4498 if (IS_DIR_SEPARATOR (path
[len
- 1]))
4499 path
[len
- 1] = '\0';
4502 do_spec_1 (path
, 1, NULL
);
4503 do_spec_1 (" ", 0, NULL
);
4505 /* Must not damage the original path. */
4506 if (info
->append_len
== 0)
4507 path
[len
- 1] = save
;
4512 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4516 create_at_file (char **argv
)
4518 char *temp_file
= make_temp_file ("");
4519 char *at_argument
= concat ("@", temp_file
, NULL
);
4520 FILE *f
= fopen (temp_file
, "w");
4524 fatal_error ("could not open temporary response file %s",
4527 status
= writeargv (argv
, f
);
4530 fatal_error ("could not write to temporary response file %s",
4533 status
= fclose (f
);
4536 fatal_error ("could not close temporary response file %s",
4539 store_arg (at_argument
, 0, 0);
4541 record_temp_file (temp_file
, !save_temps_flag
, !save_temps_flag
);
4544 /* True if we should compile INFILE. */
4547 compile_input_file_p (struct infile
*infile
)
4549 if ((!infile
->language
) || (infile
->language
[0] != '*'))
4550 if (infile
->incompiler
== input_file_compiler
)
4555 /* Process each member of VEC as a spec. */
4558 do_specs_vec (vec
<char_p
> vec
)
4563 FOR_EACH_VEC_ELT (vec
, ix
, opt
)
4565 do_spec_1 (opt
, 1, NULL
);
4566 /* Make each accumulated option a separate argument. */
4567 do_spec_1 (" ", 0, NULL
);
4571 /* Process the sub-spec SPEC as a portion of a larger spec.
4572 This is like processing a whole spec except that we do
4573 not initialize at the beginning and we do not supply a
4574 newline by default at the end.
4575 INSWITCH nonzero means don't process %-sequences in SPEC;
4576 in this case, % is treated as an ordinary character.
4577 This is used while substituting switches.
4578 INSWITCH nonzero also causes SPC not to terminate an argument.
4580 Value is zero unless a line was finished
4581 and the command on that line reported an error. */
4584 do_spec_1 (const char *spec
, int inswitch
, const char *soft_matched_part
)
4586 const char *p
= spec
;
4591 /* If it's an empty string argument to a switch, keep it as is. */
4592 if (inswitch
&& !*p
)
4596 /* If substituting a switch, treat all chars like letters.
4597 Otherwise, NL, SPC, TAB and % are special. */
4598 switch (inswitch
? 'a' : c
)
4603 if (argbuf
.length () > 0
4604 && !strcmp (argbuf
.last (), "|"))
4606 /* A `|' before the newline means use a pipe here,
4607 but only if -pipe was specified.
4608 Otherwise, execute now and don't pass the `|' as an arg. */
4611 input_from_pipe
= 1;
4618 set_collect_gcc_options ();
4620 if (argbuf
.length () > 0)
4626 /* Reinitialize for a new command, and for a new argument. */
4629 delete_this_arg
= 0;
4630 this_is_output_file
= 0;
4631 this_is_library_file
= 0;
4632 this_is_linker_script
= 0;
4633 input_from_pipe
= 0;
4640 obstack_1grow (&obstack
, c
);
4648 /* Reinitialize for a new argument. */
4649 delete_this_arg
= 0;
4650 this_is_output_file
= 0;
4651 this_is_library_file
= 0;
4652 this_is_linker_script
= 0;
4659 fatal_error ("spec %qs invalid", spec
);
4662 if (save_temps_length
)
4663 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4665 obstack_grow (&obstack
, input_basename
, basename_length
);
4666 if (compare_debug
< 0)
4667 obstack_grow (&obstack
, ".gk", 3);
4672 if (save_temps_length
)
4673 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4675 obstack_grow (&obstack
, input_basename
, suffixed_basename_length
);
4676 if (compare_debug
< 0)
4677 obstack_grow (&obstack
, ".gk", 3);
4682 delete_this_arg
= 2;
4685 /* Dump out the directories specified with LIBRARY_PATH,
4686 followed by the absolute directories
4687 that we search for startfiles. */
4690 struct spec_path_info info
;
4693 info
.append_len
= 0;
4694 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4695 /* Used on systems which record the specified -L dirs
4696 and use them to search for dynamic linking.
4697 Relative directories always come from -B,
4698 and it is better not to use them for searching
4699 at run time. In particular, stage1 loses. */
4700 info
.omit_relative
= true;
4702 info
.omit_relative
= false;
4704 info
.separate_options
= false;
4706 for_each_path (&startfile_prefixes
, true, 0, spec_path
, &info
);
4711 /* %efoo means report an error with `foo' as error message
4712 and don't execute any more commands for this file. */
4716 while (*p
!= 0 && *p
!= '\n')
4718 buf
= (char *) alloca (p
- q
+ 1);
4719 strncpy (buf
, q
, p
- q
);
4721 error ("%s", _(buf
));
4726 /* %nfoo means report a notice with `foo' on stderr. */
4730 while (*p
!= 0 && *p
!= '\n')
4732 buf
= (char *) alloca (p
- q
+ 1);
4733 strncpy (buf
, q
, p
- q
);
4735 inform (0, "%s", _(buf
));
4745 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4746 defined, and it is not a directory, and it is
4747 writable, use it. Otherwise, treat this like any
4748 other temporary file. */
4750 if ((!save_temps_flag
)
4751 && (stat (HOST_BIT_BUCKET
, &st
) == 0) && (!S_ISDIR (st
.st_mode
))
4752 && (access (HOST_BIT_BUCKET
, W_OK
) == 0))
4754 obstack_grow (&obstack
, HOST_BIT_BUCKET
,
4755 strlen (HOST_BIT_BUCKET
));
4756 delete_this_arg
= 0;
4761 goto create_temp_file
;
4765 obstack_1grow (&obstack
, '-');
4766 delete_this_arg
= 0;
4769 /* consume suffix */
4770 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4772 if (p
[0] == '%' && p
[1] == 'O')
4777 goto create_temp_file
;
4781 /* consume suffix */
4782 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4784 if (p
[0] == '%' && p
[1] == 'O')
4789 goto create_temp_file
;
4795 struct temp_name
*t
;
4797 const char *suffix
= p
;
4798 char *saved_suffix
= NULL
;
4800 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4802 suffix_length
= p
- suffix
;
4803 if (p
[0] == '%' && p
[1] == 'O')
4806 /* We don't support extra suffix characters after %O. */
4807 if (*p
== '.' || ISALNUM ((unsigned char) *p
))
4808 fatal_error ("spec %qs has invalid %<%%0%c%>", spec
, *p
);
4809 if (suffix_length
== 0)
4810 suffix
= TARGET_OBJECT_SUFFIX
;
4814 = XNEWVEC (char, suffix_length
4815 + strlen (TARGET_OBJECT_SUFFIX
));
4816 strncpy (saved_suffix
, suffix
, suffix_length
);
4817 strcpy (saved_suffix
+ suffix_length
,
4818 TARGET_OBJECT_SUFFIX
);
4820 suffix_length
+= strlen (TARGET_OBJECT_SUFFIX
);
4823 if (compare_debug
< 0)
4825 suffix
= concat (".gk", suffix
, NULL
);
4829 /* If -save-temps=obj and -o were specified, use that for the
4831 if (save_temps_length
)
4834 temp_filename_length
4835 = save_temps_length
+ suffix_length
+ 1;
4836 tmp
= (char *) alloca (temp_filename_length
);
4837 memcpy (tmp
, save_temps_prefix
, save_temps_length
);
4838 memcpy (tmp
+ save_temps_length
, suffix
, suffix_length
);
4839 tmp
[save_temps_length
+ suffix_length
] = '\0';
4840 temp_filename
= save_string (tmp
, save_temps_length
4842 obstack_grow (&obstack
, temp_filename
,
4843 temp_filename_length
);
4845 delete_this_arg
= 0;
4849 /* If the gcc_input_filename has the same suffix specified
4850 for the %g, %u, or %U, and -save-temps is specified,
4851 we could end up using that file as an intermediate
4852 thus clobbering the user's source file (.e.g.,
4853 gcc -save-temps foo.s would clobber foo.s with the
4854 output of cpp0). So check for this condition and
4855 generate a temp file as the intermediate. */
4857 if (save_temps_flag
)
4860 temp_filename_length
= basename_length
+ suffix_length
+ 1;
4861 tmp
= (char *) alloca (temp_filename_length
);
4862 memcpy (tmp
, input_basename
, basename_length
);
4863 memcpy (tmp
+ basename_length
, suffix
, suffix_length
);
4864 tmp
[basename_length
+ suffix_length
] = '\0';
4865 temp_filename
= tmp
;
4867 if (filename_cmp (temp_filename
, gcc_input_filename
) != 0)
4869 #ifndef HOST_LACKS_INODE_NUMBERS
4870 struct stat st_temp
;
4872 /* Note, set_input() resets input_stat_set to 0. */
4873 if (input_stat_set
== 0)
4875 input_stat_set
= stat (gcc_input_filename
,
4877 if (input_stat_set
>= 0)
4881 /* If we have the stat for the gcc_input_filename
4882 and we can do the stat for the temp_filename
4883 then the they could still refer to the same
4884 file if st_dev/st_ino's are the same. */
4885 if (input_stat_set
!= 1
4886 || stat (temp_filename
, &st_temp
) < 0
4887 || input_stat
.st_dev
!= st_temp
.st_dev
4888 || input_stat
.st_ino
!= st_temp
.st_ino
)
4890 /* Just compare canonical pathnames. */
4891 char* input_realname
= lrealpath (gcc_input_filename
);
4892 char* temp_realname
= lrealpath (temp_filename
);
4893 bool files_differ
= filename_cmp (input_realname
, temp_realname
);
4894 free (input_realname
);
4895 free (temp_realname
);
4899 temp_filename
= save_string (temp_filename
,
4900 temp_filename_length
+ 1);
4901 obstack_grow (&obstack
, temp_filename
,
4902 temp_filename_length
);
4904 delete_this_arg
= 0;
4910 /* See if we already have an association of %g/%u/%U and
4912 for (t
= temp_names
; t
; t
= t
->next
)
4913 if (t
->length
== suffix_length
4914 && strncmp (t
->suffix
, suffix
, suffix_length
) == 0
4915 && t
->unique
== (c
== 'u' || c
== 'U' || c
== 'j'))
4918 /* Make a new association if needed. %u and %j
4920 if (t
== 0 || c
== 'u' || c
== 'j')
4924 t
= XNEW (struct temp_name
);
4925 t
->next
= temp_names
;
4928 t
->length
= suffix_length
;
4931 t
->suffix
= saved_suffix
;
4932 saved_suffix
= NULL
;
4935 t
->suffix
= save_string (suffix
, suffix_length
);
4936 t
->unique
= (c
== 'u' || c
== 'U' || c
== 'j');
4937 temp_filename
= make_temp_file (t
->suffix
);
4938 temp_filename_length
= strlen (temp_filename
);
4939 t
->filename
= temp_filename
;
4940 t
->filename_length
= temp_filename_length
;
4943 free (saved_suffix
);
4945 obstack_grow (&obstack
, t
->filename
, t
->filename_length
);
4946 delete_this_arg
= 1;
4954 if (at_file_supplied
)
4956 /* We are going to expand `%i' to `@FILE', where FILE
4957 is a newly-created temporary filename. The filenames
4958 that would usually be expanded in place of %o will be
4959 written to the temporary file. */
4964 for (i
= 0; i
< n_infiles
; i
++)
4965 if (compile_input_file_p (&infiles
[i
]))
4968 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
4970 /* Copy the strings over. */
4971 for (i
= 0, j
= 0; i
< n_infiles
; i
++)
4972 if (compile_input_file_p (&infiles
[i
]))
4974 argv
[j
] = CONST_CAST (char *, infiles
[i
].name
);
4975 infiles
[i
].compiled
= true;
4980 create_at_file (argv
);
4983 for (i
= 0; (int) i
< n_infiles
; i
++)
4984 if (compile_input_file_p (&infiles
[i
]))
4986 store_arg (infiles
[i
].name
, 0, 0);
4987 infiles
[i
].compiled
= true;
4992 obstack_grow (&obstack
, gcc_input_filename
,
4993 input_filename_length
);
5000 struct spec_path_info info
;
5004 do_spec_1 ("-imultilib", 1, NULL
);
5005 /* Make this a separate argument. */
5006 do_spec_1 (" ", 0, NULL
);
5007 do_spec_1 (multilib_dir
, 1, NULL
);
5008 do_spec_1 (" ", 0, NULL
);
5013 do_spec_1 ("-imultiarch", 1, NULL
);
5014 /* Make this a separate argument. */
5015 do_spec_1 (" ", 0, NULL
);
5016 do_spec_1 (multiarch_dir
, 1, NULL
);
5017 do_spec_1 (" ", 0, NULL
);
5020 if (gcc_exec_prefix
)
5022 do_spec_1 ("-iprefix", 1, NULL
);
5023 /* Make this a separate argument. */
5024 do_spec_1 (" ", 0, NULL
);
5025 do_spec_1 (gcc_exec_prefix
, 1, NULL
);
5026 do_spec_1 (" ", 0, NULL
);
5029 if (target_system_root_changed
||
5030 (target_system_root
&& target_sysroot_hdrs_suffix
))
5032 do_spec_1 ("-isysroot", 1, NULL
);
5033 /* Make this a separate argument. */
5034 do_spec_1 (" ", 0, NULL
);
5035 do_spec_1 (target_system_root
, 1, NULL
);
5036 if (target_sysroot_hdrs_suffix
)
5037 do_spec_1 (target_sysroot_hdrs_suffix
, 1, NULL
);
5038 do_spec_1 (" ", 0, NULL
);
5041 info
.option
= "-isystem";
5042 info
.append
= "include";
5043 info
.append_len
= strlen (info
.append
);
5044 info
.omit_relative
= false;
5045 info
.separate_options
= true;
5047 for_each_path (&include_prefixes
, false, info
.append_len
,
5050 info
.append
= "include-fixed";
5051 if (*sysroot_hdrs_suffix_spec
)
5052 info
.append
= concat (info
.append
, dir_separator_str
,
5053 multilib_dir
, NULL
);
5054 info
.append_len
= strlen (info
.append
);
5055 for_each_path (&include_prefixes
, false, info
.append_len
,
5062 int max
= n_infiles
;
5063 max
+= lang_specific_extra_outfiles
;
5065 if (HAVE_GNU_LD
&& at_file_supplied
)
5067 /* We are going to expand `%o' to `@FILE', where FILE
5068 is a newly-created temporary filename. The filenames
5069 that would usually be expanded in place of %o will be
5070 written to the temporary file. */
5075 /* Convert OUTFILES into a form suitable for writeargv. */
5077 /* Determine how many are non-NULL. */
5078 for (n_files
= 0, i
= 0; i
< max
; i
++)
5079 n_files
+= outfiles
[i
] != NULL
;
5081 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
5083 /* Copy the strings over. */
5084 for (i
= 0, j
= 0; i
< max
; i
++)
5087 argv
[j
] = CONST_CAST (char *, outfiles
[i
]);
5092 create_at_file (argv
);
5095 for (i
= 0; i
< max
; i
++)
5097 store_arg (outfiles
[i
], 0, 0);
5102 obstack_grow (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
5107 this_is_library_file
= 1;
5111 this_is_linker_script
= 1;
5115 outfiles
[input_file_number
] = NULL
;
5119 this_is_output_file
= 1;
5124 unsigned int cur_index
= argbuf
.length ();
5125 /* Handle the {...} following the %W. */
5127 fatal_error ("spec %qs has invalid %<%%W%c%>", spec
, *p
);
5128 p
= handle_braces (p
+ 1);
5132 /* If any args were output, mark the last one for deletion
5134 if (argbuf
.length () != cur_index
)
5135 record_temp_file (argbuf
.last (), 0, 1);
5139 /* %x{OPTION} records OPTION for %X to output. */
5147 /* Skip past the option value and make a copy. */
5149 fatal_error ("spec %qs has invalid %<%%x%c%>", spec
, *p
);
5152 string
= save_string (p1
+ 1, p
- p1
- 2);
5154 /* See if we already recorded this option. */
5155 FOR_EACH_VEC_ELT (linker_options
, ix
, opt
)
5156 if (! strcmp (string
, opt
))
5162 /* This option is new; add it. */
5163 add_linker_option (string
, strlen (string
));
5168 /* Dump out the options accumulated previously using %x. */
5170 do_specs_vec (linker_options
);
5173 /* Dump out the options accumulated previously using -Wa,. */
5175 do_specs_vec (assembler_options
);
5178 /* Dump out the options accumulated previously using -Wp,. */
5180 do_specs_vec (preprocessor_options
);
5183 /* Here are digits and numbers that just process
5184 a certain constant string as a spec. */
5187 value
= do_spec_1 (cc1_spec
, 0, NULL
);
5193 value
= do_spec_1 (cc1plus_spec
, 0, NULL
);
5199 value
= do_spec_1 (asm_spec
, 0, NULL
);
5205 value
= do_spec_1 (asm_final_spec
, 0, NULL
);
5212 const char *const spec
5213 = (input_file_compiler
->cpp_spec
5214 ? input_file_compiler
->cpp_spec
5216 value
= do_spec_1 (spec
, 0, NULL
);
5223 value
= do_spec_1 (endfile_spec
, 0, NULL
);
5229 value
= do_spec_1 (link_spec
, 0, NULL
);
5235 value
= do_spec_1 (lib_spec
, 0, NULL
);
5241 if (multilib_os_dir
== NULL
)
5242 obstack_1grow (&obstack
, '.');
5244 obstack_grow (&obstack
, multilib_os_dir
,
5245 strlen (multilib_os_dir
));
5249 value
= do_spec_1 (libgcc_spec
, 0, NULL
);
5255 /* We assume there is a directory
5256 separator at the end of this string. */
5257 if (target_system_root
)
5259 obstack_grow (&obstack
, target_system_root
,
5260 strlen (target_system_root
));
5261 if (target_sysroot_suffix
)
5262 obstack_grow (&obstack
, target_sysroot_suffix
,
5263 strlen (target_sysroot_suffix
));
5268 value
= do_spec_1 (startfile_spec
, 0, NULL
);
5273 /* Here we define characters other than letters and digits. */
5276 p
= handle_braces (p
);
5282 p
= handle_spec_function (p
);
5288 obstack_1grow (&obstack
, '%');
5295 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '%')
5297 suffix_subst
= save_string (p
- 1, len
+ 1);
5302 /* Henceforth ignore the option(s) matching the pattern
5308 int have_wildcard
= 0;
5313 switch_option
= SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
;
5315 switch_option
= SWITCH_IGNORE
;
5317 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '\t')
5320 if (p
[len
-1] == '*')
5323 for (i
= 0; i
< n_switches
; i
++)
5324 if (!strncmp (switches
[i
].part1
, p
, len
- have_wildcard
)
5325 && (have_wildcard
|| switches
[i
].part1
[len
] == '\0'))
5327 switches
[i
].live_cond
|= switch_option
;
5328 /* User switch be validated from validate_all_switches.
5329 when the definition is seen from the spec file.
5330 If not defined anywhere, will be rejected. */
5331 if (switches
[i
].known
)
5332 switches
[i
].validated
= true;
5340 if (soft_matched_part
)
5342 if (soft_matched_part
[0])
5343 do_spec_1 (soft_matched_part
, 1, NULL
);
5344 do_spec_1 (" ", 0, NULL
);
5347 /* Catch the case where a spec string contains something like
5348 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5349 hand side of the :. */
5350 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5353 /* Process a string found as the value of a spec given by name.
5354 This feature allows individual machine descriptions
5355 to add and use their own specs. */
5358 const char *name
= p
;
5359 struct spec_list
*sl
;
5362 /* The string after the S/P is the name of a spec that is to be
5364 while (*p
&& *p
!= ')')
5367 /* See if it's in the list. */
5368 for (len
= p
- name
, sl
= specs
; sl
; sl
= sl
->next
)
5369 if (sl
->name_len
== len
&& !strncmp (sl
->name
, name
, len
))
5371 name
= *(sl
->ptr_spec
);
5373 fnotice (stderr
, "Processing spec (%s), which is '%s'\n",
5381 value
= do_spec_1 (name
, 0, NULL
);
5386 /* Discard the closing paren. */
5393 error ("spec failure: unrecognized spec option %qc", c
);
5399 /* Backslash: treat next character as ordinary. */
5404 /* Ordinary character: put it into the current argument. */
5405 obstack_1grow (&obstack
, c
);
5409 /* End of string. If we are processing a spec function, we need to
5410 end any pending argument. */
5411 if (processing_spec_function
)
5417 /* Look up a spec function. */
5419 static const struct spec_function
*
5420 lookup_spec_function (const char *name
)
5422 const struct spec_function
*sf
;
5424 for (sf
= static_spec_functions
; sf
->name
!= NULL
; sf
++)
5425 if (strcmp (sf
->name
, name
) == 0)
5431 /* Evaluate a spec function. */
5434 eval_spec_function (const char *func
, const char *args
)
5436 const struct spec_function
*sf
;
5437 const char *funcval
;
5439 /* Saved spec processing context. */
5440 vec
<const_char_p
> save_argbuf
;
5443 int save_delete_this_arg
;
5444 int save_this_is_output_file
;
5445 int save_this_is_library_file
;
5446 int save_input_from_pipe
;
5447 int save_this_is_linker_script
;
5448 const char *save_suffix_subst
;
5450 int save_growing_size
;
5451 void *save_growing_value
;
5453 sf
= lookup_spec_function (func
);
5455 fatal_error ("unknown spec function %qs", func
);
5457 /* Push the spec processing context. */
5458 save_argbuf
= argbuf
;
5460 save_arg_going
= arg_going
;
5461 save_delete_this_arg
= delete_this_arg
;
5462 save_this_is_output_file
= this_is_output_file
;
5463 save_this_is_library_file
= this_is_library_file
;
5464 save_this_is_linker_script
= this_is_linker_script
;
5465 save_input_from_pipe
= input_from_pipe
;
5466 save_suffix_subst
= suffix_subst
;
5468 /* If we have some object growing now, finalize it so the args and function
5469 eval proceed from a cleared context. This is needed to prevent the first
5470 constructed arg from mistakenly including the growing value. We'll push
5471 this value back on the obstack once the function evaluation is done, to
5472 restore a consistent processing context for our caller. This is fine as
5473 the address of growing objects isn't guaranteed to remain stable until
5474 they are finalized, and we expect this situation to be rare enough for
5475 the extra copy not to be an issue. */
5476 save_growing_size
= obstack_object_size (&obstack
);
5477 if (save_growing_size
> 0)
5478 save_growing_value
= obstack_finish (&obstack
);
5480 /* Create a new spec processing context, and build the function
5484 if (do_spec_2 (args
) < 0)
5485 fatal_error ("error in args to spec function %qs", func
);
5487 /* argbuf_index is an index for the next argument to be inserted, and
5488 so contains the count of the args already inserted. */
5490 funcval
= (*sf
->func
) (argbuf
.length (),
5493 /* Pop the spec processing context. */
5495 argbuf
= save_argbuf
;
5497 arg_going
= save_arg_going
;
5498 delete_this_arg
= save_delete_this_arg
;
5499 this_is_output_file
= save_this_is_output_file
;
5500 this_is_library_file
= save_this_is_library_file
;
5501 this_is_linker_script
= save_this_is_linker_script
;
5502 input_from_pipe
= save_input_from_pipe
;
5503 suffix_subst
= save_suffix_subst
;
5505 if (save_growing_size
> 0)
5506 obstack_grow (&obstack
, save_growing_value
, save_growing_size
);
5511 /* Handle a spec function call of the form:
5515 ARGS is processed as a spec in a separate context and split into an
5516 argument vector in the normal fashion. The function returns a string
5517 containing a spec which we then process in the caller's context, or
5518 NULL if no processing is required. */
5521 handle_spec_function (const char *p
)
5524 const char *endp
, *funcval
;
5527 processing_spec_function
++;
5529 /* Get the function name. */
5530 for (endp
= p
; *endp
!= '\0'; endp
++)
5532 if (*endp
== '(') /* ) */
5534 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5535 if (!ISALNUM (*endp
) && !(*endp
== '-' || *endp
== '_'))
5536 fatal_error ("malformed spec function name");
5538 if (*endp
!= '(') /* ) */
5539 fatal_error ("no arguments for spec function");
5540 func
= save_string (p
, endp
- p
);
5543 /* Get the arguments. */
5544 for (count
= 0; *endp
!= '\0'; endp
++)
5553 else if (*endp
== '(') /* ) */
5558 fatal_error ("malformed spec function arguments");
5559 args
= save_string (p
, endp
- p
);
5562 /* p now points to just past the end of the spec function expression. */
5564 funcval
= eval_spec_function (func
, args
);
5565 if (funcval
!= NULL
&& do_spec_1 (funcval
, 0, NULL
) < 0)
5571 processing_spec_function
--;
5576 /* Inline subroutine of handle_braces. Returns true if the current
5577 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5579 input_suffix_matches (const char *atom
, const char *end_atom
)
5581 return (input_suffix
5582 && !strncmp (input_suffix
, atom
, end_atom
- atom
)
5583 && input_suffix
[end_atom
- atom
] == '\0');
5586 /* Subroutine of handle_braces. Returns true if the current
5587 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5589 input_spec_matches (const char *atom
, const char *end_atom
)
5591 return (input_file_compiler
5592 && input_file_compiler
->suffix
5593 && input_file_compiler
->suffix
[0] != '\0'
5594 && !strncmp (input_file_compiler
->suffix
+ 1, atom
,
5596 && input_file_compiler
->suffix
[end_atom
- atom
+ 1] == '\0');
5599 /* Subroutine of handle_braces. Returns true if a switch
5600 matching the atom bracketed by ATOM and END_ATOM appeared on the
5603 switch_matches (const char *atom
, const char *end_atom
, int starred
)
5606 int len
= end_atom
- atom
;
5607 int plen
= starred
? len
: -1;
5609 for (i
= 0; i
< n_switches
; i
++)
5610 if (!strncmp (switches
[i
].part1
, atom
, len
)
5611 && (starred
|| switches
[i
].part1
[len
] == '\0')
5612 && check_live_switch (i
, plen
))
5615 /* Check if a switch with separated form matching the atom.
5616 We check -D and -U switches. */
5617 else if (switches
[i
].args
!= 0)
5619 if ((*switches
[i
].part1
== 'D' || *switches
[i
].part1
== 'U')
5620 && *switches
[i
].part1
== atom
[0])
5622 if (!strncmp (switches
[i
].args
[0], &atom
[1], len
- 1)
5623 && (starred
|| (switches
[i
].part1
[1] == '\0'
5624 && switches
[i
].args
[0][len
- 1] == '\0'))
5625 && check_live_switch (i
, (starred
? 1 : -1)))
5633 /* Inline subroutine of handle_braces. Mark all of the switches which
5634 match ATOM (extends to END_ATOM; STARRED indicates whether there
5635 was a star after the atom) for later processing. */
5637 mark_matching_switches (const char *atom
, const char *end_atom
, int starred
)
5640 int len
= end_atom
- atom
;
5641 int plen
= starred
? len
: -1;
5643 for (i
= 0; i
< n_switches
; i
++)
5644 if (!strncmp (switches
[i
].part1
, atom
, len
)
5645 && (starred
|| switches
[i
].part1
[len
] == '\0')
5646 && check_live_switch (i
, plen
))
5647 switches
[i
].ordering
= 1;
5650 /* Inline subroutine of handle_braces. Process all the currently
5651 marked switches through give_switch, and clear the marks. */
5653 process_marked_switches (void)
5657 for (i
= 0; i
< n_switches
; i
++)
5658 if (switches
[i
].ordering
== 1)
5660 switches
[i
].ordering
= 0;
5665 /* Handle a %{ ... } construct. P points just inside the leading {.
5666 Returns a pointer one past the end of the brace block, or 0
5667 if we call do_spec_1 and that returns -1. */
5670 handle_braces (const char *p
)
5672 const char *atom
, *end_atom
;
5673 const char *d_atom
= NULL
, *d_end_atom
= NULL
;
5674 const char *orig
= p
;
5682 bool a_must_be_last
= false;
5683 bool ordered_set
= false;
5684 bool disjunct_set
= false;
5685 bool disj_matched
= false;
5686 bool disj_starred
= true;
5687 bool n_way_choice
= false;
5688 bool n_way_matched
= false;
5690 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5697 /* Scan one "atom" (S in the description above of %{}, possibly
5698 with '!', '.', '@', ',', or '*' modifiers). */
5700 a_is_suffix
= false;
5701 a_is_starred
= false;
5702 a_is_negated
= false;
5703 a_is_spectype
= false;
5707 p
++, a_is_negated
= true;
5711 p
++, a_is_suffix
= true;
5713 p
++, a_is_spectype
= true;
5716 while (ISIDNUM(*p
) || *p
== '-' || *p
== '+' || *p
== '='
5717 || *p
== ',' || *p
== '.' || *p
== '@')
5722 p
++, a_is_starred
= 1;
5728 /* Substitute the switch(es) indicated by the current atom. */
5730 if (disjunct_set
|| n_way_choice
|| a_is_negated
|| a_is_suffix
5731 || a_is_spectype
|| atom
== end_atom
)
5734 mark_matching_switches (atom
, end_atom
, a_is_starred
);
5737 process_marked_switches ();
5741 /* Substitute some text if the current atom appears as a switch
5743 disjunct_set
= true;
5747 if (atom
== end_atom
)
5749 if (!n_way_choice
|| disj_matched
|| *p
== '|'
5750 || a_is_negated
|| a_is_suffix
|| a_is_spectype
5754 /* An empty term may appear as the last choice of an
5755 N-way choice set; it means "otherwise". */
5756 a_must_be_last
= true;
5757 disj_matched
= !n_way_matched
;
5758 disj_starred
= false;
5762 if ((a_is_suffix
|| a_is_spectype
) && a_is_starred
)
5766 disj_starred
= false;
5768 /* Don't bother testing this atom if we already have a
5770 if (!disj_matched
&& !n_way_matched
)
5773 a_matched
= input_suffix_matches (atom
, end_atom
);
5774 else if (a_is_spectype
)
5775 a_matched
= input_spec_matches (atom
, end_atom
);
5777 a_matched
= switch_matches (atom
, end_atom
, a_is_starred
);
5779 if (a_matched
!= a_is_negated
)
5781 disj_matched
= true;
5783 d_end_atom
= end_atom
;
5790 /* Found the body, that is, the text to substitute if the
5791 current disjunction matches. */
5792 p
= process_brace_body (p
+ 1, d_atom
, d_end_atom
, disj_starred
,
5793 disj_matched
&& !n_way_matched
);
5797 /* If we have an N-way choice, reset state for the next
5801 n_way_choice
= true;
5802 n_way_matched
|= disj_matched
;
5803 disj_matched
= false;
5804 disj_starred
= true;
5805 d_atom
= d_end_atom
= NULL
;
5814 while (*p
++ != '}');
5819 fatal_error ("braced spec %qs is invalid at %qc", orig
, *p
);
5824 /* Subroutine of handle_braces. Scan and process a brace substitution body
5825 (X in the description of %{} syntax). P points one past the colon;
5826 ATOM and END_ATOM bracket the first atom which was found to be true
5827 (present) in the current disjunction; STARRED indicates whether all
5828 the atoms in the current disjunction were starred (for syntax validation);
5829 MATCHED indicates whether the disjunction matched or not, and therefore
5830 whether or not the body is to be processed through do_spec_1 or just
5831 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5835 process_brace_body (const char *p
, const char *atom
, const char *end_atom
,
5836 int starred
, int matched
)
5838 const char *body
, *end_body
;
5839 unsigned int nesting_level
;
5840 bool have_subst
= false;
5842 /* Locate the closing } or ;, honoring nested braces.
5843 Trim trailing whitespace. */
5852 if (!--nesting_level
)
5855 else if (*p
== ';' && nesting_level
== 1)
5857 else if (*p
== '%' && p
[1] == '*' && nesting_level
== 1)
5859 else if (*p
== '\0')
5865 while (end_body
[-1] == ' ' || end_body
[-1] == '\t')
5868 if (have_subst
&& !starred
)
5873 /* Copy the substitution body to permanent storage and execute it.
5874 If have_subst is false, this is a simple matter of running the
5875 body through do_spec_1... */
5876 char *string
= save_string (body
, end_body
- body
);
5879 if (do_spec_1 (string
, 0, NULL
) < 0)
5884 /* ... but if have_subst is true, we have to process the
5885 body once for each matching switch, with %* set to the
5886 variant part of the switch. */
5887 unsigned int hard_match_len
= end_atom
- atom
;
5890 for (i
= 0; i
< n_switches
; i
++)
5891 if (!strncmp (switches
[i
].part1
, atom
, hard_match_len
)
5892 && check_live_switch (i
, hard_match_len
))
5894 if (do_spec_1 (string
, 0,
5895 &switches
[i
].part1
[hard_match_len
]) < 0)
5897 /* Pass any arguments this switch has. */
5899 suffix_subst
= NULL
;
5907 fatal_error ("braced spec body %qs is invalid", body
);
5910 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5911 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5912 spec, or -1 if either exact match or %* is used.
5914 A -O switch is obsoleted by a later -O switch. A -f, -g, -m, or -W switch
5915 whose value does not begin with "no-" is obsoleted by the same value
5916 with the "no-", similarly for a switch with the "no-" prefix. */
5919 check_live_switch (int switchnum
, int prefix_length
)
5921 const char *name
= switches
[switchnum
].part1
;
5924 /* If we already processed this switch and determined if it was
5925 live or not, return our past determination. */
5926 if (switches
[switchnum
].live_cond
!= 0)
5927 return ((switches
[switchnum
].live_cond
& SWITCH_LIVE
) != 0
5928 && (switches
[switchnum
].live_cond
& SWITCH_FALSE
) == 0
5929 && (switches
[switchnum
].live_cond
& SWITCH_IGNORE_PERMANENTLY
)
5932 /* In the common case of {<at-most-one-letter>*}, a negating
5933 switch would always match, so ignore that case. We will just
5934 send the conflicting switches to the compiler phase. */
5935 if (prefix_length
>= 0 && prefix_length
<= 1)
5938 /* Now search for duplicate in a manner that depends on the name. */
5942 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
5943 if (switches
[i
].part1
[0] == 'O')
5945 switches
[switchnum
].validated
= true;
5946 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
5951 case 'W': case 'f': case 'm': case 'g':
5952 if (! strncmp (name
+ 1, "no-", 3))
5954 /* We have Xno-YYY, search for XYYY. */
5955 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
5956 if (switches
[i
].part1
[0] == name
[0]
5957 && ! strcmp (&switches
[i
].part1
[1], &name
[4]))
5959 /* --specs are validated with the validate_switches mechanism. */
5960 if (switches
[switchnum
].known
)
5961 switches
[switchnum
].validated
= true;
5962 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
5968 /* We have XYYY, search for Xno-YYY. */
5969 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
5970 if (switches
[i
].part1
[0] == name
[0]
5971 && switches
[i
].part1
[1] == 'n'
5972 && switches
[i
].part1
[2] == 'o'
5973 && switches
[i
].part1
[3] == '-'
5974 && !strcmp (&switches
[i
].part1
[4], &name
[1]))
5976 /* --specs are validated with the validate_switches mechanism. */
5977 if (switches
[switchnum
].known
)
5978 switches
[switchnum
].validated
= true;
5979 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
5986 /* Otherwise the switch is live. */
5987 switches
[switchnum
].live_cond
|= SWITCH_LIVE
;
5991 /* Pass a switch to the current accumulating command
5992 in the same form that we received it.
5993 SWITCHNUM identifies the switch; it is an index into
5994 the vector of switches gcc received, which is `switches'.
5995 This cannot fail since it never finishes a command line.
5997 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
6000 give_switch (int switchnum
, int omit_first_word
)
6002 if ((switches
[switchnum
].live_cond
& SWITCH_IGNORE
) != 0)
6005 if (!omit_first_word
)
6007 do_spec_1 ("-", 0, NULL
);
6008 do_spec_1 (switches
[switchnum
].part1
, 1, NULL
);
6011 if (switches
[switchnum
].args
!= 0)
6014 for (p
= switches
[switchnum
].args
; *p
; p
++)
6016 const char *arg
= *p
;
6018 do_spec_1 (" ", 0, NULL
);
6021 unsigned length
= strlen (arg
);
6024 while (length
-- && !IS_DIR_SEPARATOR (arg
[length
]))
6025 if (arg
[length
] == '.')
6027 (CONST_CAST(char *, arg
))[length
] = 0;
6031 do_spec_1 (arg
, 1, NULL
);
6033 (CONST_CAST(char *, arg
))[length
] = '.';
6034 do_spec_1 (suffix_subst
, 1, NULL
);
6037 do_spec_1 (arg
, 1, NULL
);
6041 do_spec_1 (" ", 0, NULL
);
6042 switches
[switchnum
].validated
= true;
6045 /* Search for a file named NAME trying various prefixes including the
6046 user's -B prefix and some standard ones.
6047 Return the absolute file name found. If nothing is found, return NAME. */
6050 find_file (const char *name
)
6052 char *newname
= find_a_file (&startfile_prefixes
, name
, R_OK
, true);
6053 return newname
? newname
: name
;
6056 /* Determine whether a directory exists. If LINKER, return 0 for
6057 certain fixed names not needed by the linker. */
6060 is_directory (const char *path1
, bool linker
)
6067 /* Ensure the string ends with "/.". The resulting path will be a
6068 directory even if the given path is a symbolic link. */
6069 len1
= strlen (path1
);
6070 path
= (char *) alloca (3 + len1
);
6071 memcpy (path
, path1
, len1
);
6073 if (!IS_DIR_SEPARATOR (cp
[-1]))
6074 *cp
++ = DIR_SEPARATOR
;
6078 /* Exclude directories that the linker is known to search. */
6080 && IS_DIR_SEPARATOR (path
[0])
6082 && filename_ncmp (path
+ 1, "lib", 3) == 0)
6084 && filename_ncmp (path
+ 1, "usr", 3) == 0
6085 && IS_DIR_SEPARATOR (path
[4])
6086 && filename_ncmp (path
+ 5, "lib", 3) == 0)))
6089 return (stat (path
, &st
) >= 0 && S_ISDIR (st
.st_mode
));
6092 /* Set up the various global variables to indicate that we're processing
6093 the input file named FILENAME. */
6096 set_input (const char *filename
)
6100 gcc_input_filename
= filename
;
6101 input_filename_length
= strlen (gcc_input_filename
);
6102 input_basename
= lbasename (gcc_input_filename
);
6104 /* Find a suffix starting with the last period,
6105 and set basename_length to exclude that suffix. */
6106 basename_length
= strlen (input_basename
);
6107 suffixed_basename_length
= basename_length
;
6108 p
= input_basename
+ basename_length
;
6109 while (p
!= input_basename
&& *p
!= '.')
6111 if (*p
== '.' && p
!= input_basename
)
6113 basename_length
= p
- input_basename
;
6114 input_suffix
= p
+ 1;
6119 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
6120 we will need to do a stat on the gcc_input_filename. The
6121 INPUT_STAT_SET signals that the stat is needed. */
6125 /* On fatal signals, delete all the temporary files. */
6128 fatal_signal (int signum
)
6130 signal (signum
, SIG_DFL
);
6131 delete_failure_queue ();
6132 delete_temp_files ();
6133 /* Get the same signal again, this time not handled,
6134 so its normal effect occurs. */
6135 kill (getpid (), signum
);
6138 /* Compare the contents of the two files named CMPFILE[0] and
6139 CMPFILE[1]. Return zero if they're identical, nonzero
6143 compare_files (char *cmpfile
[])
6146 FILE *temp
[2] = { NULL
, NULL
};
6152 void *map
[2] = { NULL
, NULL
};
6154 for (i
= 0; i
< 2; i
++)
6158 if (stat (cmpfile
[i
], &st
) < 0 || !S_ISREG (st
.st_mode
))
6160 error ("%s: could not determine length of compare-debug file %s",
6161 gcc_input_filename
, cmpfile
[i
]);
6166 length
[i
] = st
.st_size
;
6169 if (!ret
&& length
[0] != length
[1])
6171 error ("%s: -fcompare-debug failure (length)", gcc_input_filename
);
6176 for (i
= 0; i
< 2; i
++)
6178 int fd
= open (cmpfile
[i
], O_RDONLY
);
6181 error ("%s: could not open compare-debug file %s",
6182 gcc_input_filename
, cmpfile
[i
]);
6187 map
[i
] = mmap (NULL
, length
[i
], PROT_READ
, MAP_PRIVATE
, fd
, 0);
6190 if (map
[i
] == (void *) MAP_FAILED
)
6199 if (memcmp (map
[0], map
[1], length
[0]) != 0)
6201 error ("%s: -fcompare-debug failure", gcc_input_filename
);
6206 for (i
= 0; i
< 2; i
++)
6208 munmap ((caddr_t
) map
[i
], length
[i
]);
6217 for (i
= 0; i
< 2; i
++)
6219 temp
[i
] = fopen (cmpfile
[i
], "r");
6222 error ("%s: could not open compare-debug file %s",
6223 gcc_input_filename
, cmpfile
[i
]);
6229 if (!ret
&& temp
[0] && temp
[1])
6233 c0
= fgetc (temp
[0]);
6234 c1
= fgetc (temp
[1]);
6238 error ("%s: -fcompare-debug failure",
6239 gcc_input_filename
);
6248 for (i
= 1; i
>= 0; i
--)
6257 extern int main (int, char **);
6260 main (int argc
, char **argv
)
6264 int linker_was_run
= 0;
6265 int lang_n_infiles
= 0;
6266 int num_linker_inputs
= 0;
6267 char *explicit_link_files
;
6269 char *lto_wrapper_file
;
6271 struct user_specs
*uptr
;
6272 char **old_argv
= argv
;
6273 struct cl_decoded_option
*decoded_options
;
6274 unsigned int decoded_options_count
;
6276 p
= argv
[0] + strlen (argv
[0]);
6277 while (p
!= argv
[0] && !IS_DIR_SEPARATOR (p
[-1]))
6281 xmalloc_set_program_name (progname
);
6283 expandargv (&argc
, &argv
);
6285 /* Determine if any expansions were made. */
6286 if (argv
!= old_argv
)
6287 at_file_supplied
= true;
6289 /* Register the language-independent parameters. */
6290 global_init_params ();
6293 init_options_struct (&global_options
, &global_options_set
);
6295 decode_cmdline_options_to_array (argc
, CONST_CAST2 (const char **, char **,
6298 &decoded_options
, &decoded_options_count
);
6300 /* Unlock the stdio streams. */
6301 unlock_std_streams ();
6303 gcc_init_libintl ();
6305 diagnostic_initialize (global_dc
, 0);
6307 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6308 /* Perform host dependent initialization when needed. */
6309 GCC_DRIVER_HOST_INITIALIZATION
;
6312 if (atexit (delete_temp_files
) != 0)
6313 fatal_error ("atexit failed");
6315 if (signal (SIGINT
, SIG_IGN
) != SIG_IGN
)
6316 signal (SIGINT
, fatal_signal
);
6318 if (signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
6319 signal (SIGHUP
, fatal_signal
);
6321 if (signal (SIGTERM
, SIG_IGN
) != SIG_IGN
)
6322 signal (SIGTERM
, fatal_signal
);
6324 if (signal (SIGPIPE
, SIG_IGN
) != SIG_IGN
)
6325 signal (SIGPIPE
, fatal_signal
);
6328 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6329 receive the signal. A different setting is inheritable */
6330 signal (SIGCHLD
, SIG_DFL
);
6333 /* Parsing and gimplification sometimes need quite large stack.
6334 Increase stack size limits if possible. */
6335 stack_limit_increase (64 * 1024 * 1024);
6337 /* Allocate the argument vector. */
6340 obstack_init (&obstack
);
6342 /* Build multilib_select, et. al from the separate lines that make up each
6343 multilib selection. */
6345 const char *const *q
= multilib_raw
;
6348 obstack_init (&multilib_obstack
);
6349 while ((p
= *q
++) != (char *) 0)
6350 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6352 obstack_1grow (&multilib_obstack
, 0);
6353 multilib_select
= XOBFINISH (&multilib_obstack
, const char *);
6355 q
= multilib_matches_raw
;
6356 while ((p
= *q
++) != (char *) 0)
6357 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6359 obstack_1grow (&multilib_obstack
, 0);
6360 multilib_matches
= XOBFINISH (&multilib_obstack
, const char *);
6362 q
= multilib_exclusions_raw
;
6363 while ((p
= *q
++) != (char *) 0)
6364 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6366 obstack_1grow (&multilib_obstack
, 0);
6367 multilib_exclusions
= XOBFINISH (&multilib_obstack
, const char *);
6369 q
= multilib_reuse_raw
;
6370 while ((p
= *q
++) != (char *) 0)
6371 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6373 obstack_1grow (&multilib_obstack
, 0);
6374 multilib_reuse
= XOBFINISH (&multilib_obstack
, const char *);
6377 for (i
= 0; i
< ARRAY_SIZE (multilib_defaults_raw
); i
++)
6380 obstack_1grow (&multilib_obstack
, ' ');
6381 obstack_grow (&multilib_obstack
,
6382 multilib_defaults_raw
[i
],
6383 strlen (multilib_defaults_raw
[i
]));
6387 obstack_1grow (&multilib_obstack
, 0);
6388 multilib_defaults
= XOBFINISH (&multilib_obstack
, const char *);
6391 #ifdef INIT_ENVIRONMENT
6392 /* Set up any other necessary machine specific environment variables. */
6393 xputenv (INIT_ENVIRONMENT
);
6396 /* Make a table of what switches there are (switches, n_switches).
6397 Make a table of specified input files (infiles, n_infiles).
6398 Decode switches that are handled locally. */
6400 process_command (decoded_options_count
, decoded_options
);
6402 /* Initialize the vector of specs to just the default.
6403 This means one element containing 0s, as a terminator. */
6405 compilers
= XNEWVAR (struct compiler
, sizeof default_compilers
);
6406 memcpy (compilers
, default_compilers
, sizeof default_compilers
);
6407 n_compilers
= n_default_compilers
;
6409 /* Read specs from a file if there is one. */
6411 machine_suffix
= concat (spec_machine
, dir_separator_str
,
6412 spec_version
, dir_separator_str
, NULL
);
6413 just_machine_suffix
= concat (spec_machine
, dir_separator_str
, NULL
);
6415 specs_file
= find_a_file (&startfile_prefixes
, "specs", R_OK
, true);
6416 /* Read the specs file unless it is a default one. */
6417 if (specs_file
!= 0 && strcmp (specs_file
, "specs"))
6418 read_specs (specs_file
, true, false);
6422 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6423 for any override of as, ld and libraries. */
6424 specs_file
= (char *) alloca (strlen (standard_exec_prefix
)
6425 + strlen (just_machine_suffix
) + sizeof ("specs"));
6427 strcpy (specs_file
, standard_exec_prefix
);
6428 strcat (specs_file
, just_machine_suffix
);
6429 strcat (specs_file
, "specs");
6430 if (access (specs_file
, R_OK
) == 0)
6431 read_specs (specs_file
, true, false);
6433 /* Process any configure-time defaults specified for the command line
6434 options, via OPTION_DEFAULT_SPECS. */
6435 for (i
= 0; i
< ARRAY_SIZE (option_default_specs
); i
++)
6436 do_option_spec (option_default_specs
[i
].name
,
6437 option_default_specs
[i
].spec
);
6439 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6440 of the command line. */
6442 for (i
= 0; i
< ARRAY_SIZE (driver_self_specs
); i
++)
6443 do_self_spec (driver_self_specs
[i
]);
6445 /* If not cross-compiling, look for executables in the standard
6447 if (*cross_compile
== '0')
6449 if (*md_exec_prefix
)
6451 add_prefix (&exec_prefixes
, md_exec_prefix
, "GCC",
6452 PREFIX_PRIORITY_LAST
, 0, 0);
6456 /* Process sysroot_suffix_spec. */
6457 if (*sysroot_suffix_spec
!= 0
6458 && !no_sysroot_suffix
6459 && do_spec_2 (sysroot_suffix_spec
) == 0)
6461 if (argbuf
.length () > 1)
6462 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6463 else if (argbuf
.length () == 1)
6464 target_sysroot_suffix
= xstrdup (argbuf
.last ());
6467 #ifdef HAVE_LD_SYSROOT
6468 /* Pass the --sysroot option to the linker, if it supports that. If
6469 there is a sysroot_suffix_spec, it has already been processed by
6470 this point, so target_system_root really is the system root we
6472 if (target_system_root
)
6474 obstack_grow (&obstack
, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6475 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
6476 set_spec ("link", XOBFINISH (&obstack
, const char *), false);
6480 /* Process sysroot_hdrs_suffix_spec. */
6481 if (*sysroot_hdrs_suffix_spec
!= 0
6482 && !no_sysroot_suffix
6483 && do_spec_2 (sysroot_hdrs_suffix_spec
) == 0)
6485 if (argbuf
.length () > 1)
6486 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6487 else if (argbuf
.length () == 1)
6488 target_sysroot_hdrs_suffix
= xstrdup (argbuf
.last ());
6491 /* Look for startfiles in the standard places. */
6492 if (*startfile_prefix_spec
!= 0
6493 && do_spec_2 (startfile_prefix_spec
) == 0
6494 && do_spec_1 (" ", 0, NULL
) == 0)
6498 FOR_EACH_VEC_ELT (argbuf
, ndx
, arg
)
6499 add_sysrooted_prefix (&startfile_prefixes
, arg
, "BINUTILS",
6500 PREFIX_PRIORITY_LAST
, 0, 1);
6502 /* We should eventually get rid of all these and stick to
6503 startfile_prefix_spec exclusively. */
6504 else if (*cross_compile
== '0' || target_system_root
)
6506 if (*md_startfile_prefix
)
6507 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix
,
6508 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
6510 if (*md_startfile_prefix_1
)
6511 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix_1
,
6512 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
6514 /* If standard_startfile_prefix is relative, base it on
6515 standard_exec_prefix. This lets us move the installed tree
6516 as a unit. If GCC_EXEC_PREFIX is defined, base
6517 standard_startfile_prefix on that as well.
6519 If the prefix is relative, only search it for native compilers;
6520 otherwise we will search a directory containing host libraries. */
6521 if (IS_ABSOLUTE_PATH (standard_startfile_prefix
))
6522 add_sysrooted_prefix (&startfile_prefixes
,
6523 standard_startfile_prefix
, "BINUTILS",
6524 PREFIX_PRIORITY_LAST
, 0, 1);
6525 else if (*cross_compile
== '0')
6527 add_prefix (&startfile_prefixes
,
6528 concat (gcc_exec_prefix
6529 ? gcc_exec_prefix
: standard_exec_prefix
,
6531 standard_startfile_prefix
, NULL
),
6532 NULL
, PREFIX_PRIORITY_LAST
, 0, 1);
6535 /* Sysrooted prefixes are relocated because target_system_root is
6536 also relocated by gcc_exec_prefix. */
6537 if (*standard_startfile_prefix_1
)
6538 add_sysrooted_prefix (&startfile_prefixes
,
6539 standard_startfile_prefix_1
, "BINUTILS",
6540 PREFIX_PRIORITY_LAST
, 0, 1);
6541 if (*standard_startfile_prefix_2
)
6542 add_sysrooted_prefix (&startfile_prefixes
,
6543 standard_startfile_prefix_2
, "BINUTILS",
6544 PREFIX_PRIORITY_LAST
, 0, 1);
6547 /* Process any user specified specs in the order given on the command
6549 for (uptr
= user_specs_head
; uptr
; uptr
= uptr
->next
)
6551 char *filename
= find_a_file (&startfile_prefixes
, uptr
->filename
,
6553 read_specs (filename
? filename
: uptr
->filename
, false, true);
6556 /* Process any user self specs. */
6558 struct spec_list
*sl
;
6559 for (sl
= specs
; sl
; sl
= sl
->next
)
6560 if (sl
->name_len
== sizeof "self_spec" - 1
6561 && !strcmp (sl
->name
, "self_spec"))
6562 do_self_spec (*sl
->ptr_spec
);
6567 enum save_temps save
;
6569 if (!compare_debug_second
)
6571 n_switches_debug_check
[1] = n_switches
;
6572 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
6573 switches_debug_check
[1] = XDUPVEC (struct switchstr
, switches
,
6576 do_self_spec ("%:compare-debug-self-opt()");
6577 n_switches_debug_check
[0] = n_switches
;
6578 n_switches_alloc_debug_check
[0] = n_switches_alloc
;
6579 switches_debug_check
[0] = switches
;
6581 n_switches
= n_switches_debug_check
[1];
6582 n_switches_alloc
= n_switches_alloc_debug_check
[1];
6583 switches
= switches_debug_check
[1];
6586 /* Avoid crash when computing %j in this early. */
6587 save
= save_temps_flag
;
6588 save_temps_flag
= SAVE_TEMPS_NONE
;
6590 compare_debug
= -compare_debug
;
6591 do_self_spec ("%:compare-debug-self-opt()");
6593 save_temps_flag
= save
;
6595 if (!compare_debug_second
)
6597 n_switches_debug_check
[1] = n_switches
;
6598 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
6599 switches_debug_check
[1] = switches
;
6600 compare_debug
= -compare_debug
;
6601 n_switches
= n_switches_debug_check
[0];
6602 n_switches_alloc
= n_switches_debug_check
[0];
6603 switches
= switches_debug_check
[0];
6608 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6609 if (gcc_exec_prefix
)
6610 gcc_exec_prefix
= concat (gcc_exec_prefix
, spec_machine
, dir_separator_str
,
6611 spec_version
, dir_separator_str
, NULL
);
6613 /* Now we have the specs.
6614 Set the `valid' bits for switches that match anything in any spec. */
6616 validate_all_switches ();
6618 /* Now that we have the switches and the specs, set
6619 the subdirectory based on the options. */
6620 set_multilib_dir ();
6622 /* Set up to remember the pathname of gcc and any options
6623 needed for collect. We use argv[0] instead of progname because
6624 we need the complete pathname. */
6625 obstack_init (&collect_obstack
);
6626 obstack_grow (&collect_obstack
, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6627 obstack_grow (&collect_obstack
, argv
[0], strlen (argv
[0]) + 1);
6628 xputenv (XOBFINISH (&collect_obstack
, char *));
6630 /* Set up to remember the pathname of the lto wrapper. */
6633 lto_wrapper_file
= NULL
;
6635 lto_wrapper_file
= find_a_file (&exec_prefixes
, "lto-wrapper",
6637 if (lto_wrapper_file
)
6639 lto_wrapper_file
= convert_white_space (lto_wrapper_file
);
6640 lto_wrapper_spec
= lto_wrapper_file
;
6641 obstack_init (&collect_obstack
);
6642 obstack_grow (&collect_obstack
, "COLLECT_LTO_WRAPPER=",
6643 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
6644 obstack_grow (&collect_obstack
, lto_wrapper_spec
,
6645 strlen (lto_wrapper_spec
) + 1);
6646 xputenv (XOBFINISH (&collect_obstack
, char *));
6649 /* Reject switches that no pass was interested in. */
6651 for (i
= 0; (int) i
< n_switches
; i
++)
6652 if (! switches
[i
].validated
)
6653 error ("unrecognized command line option %<-%s%>", switches
[i
].part1
);
6655 /* Obey some of the options. */
6657 if (print_search_dirs
)
6659 printf (_("install: %s%s\n"),
6660 gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
6661 gcc_exec_prefix
? "" : machine_suffix
);
6662 printf (_("programs: %s\n"),
6663 build_search_list (&exec_prefixes
, "", false, false));
6664 printf (_("libraries: %s\n"),
6665 build_search_list (&startfile_prefixes
, "", false, true));
6669 if (print_file_name
)
6671 printf ("%s\n", find_file (print_file_name
));
6675 if (print_prog_name
)
6677 char *newname
= find_a_file (&exec_prefixes
, print_prog_name
, X_OK
, 0);
6678 printf ("%s\n", (newname
? newname
: print_prog_name
));
6682 if (print_multi_lib
)
6684 print_multilib_info ();
6688 if (print_multi_directory
)
6690 if (multilib_dir
== NULL
)
6693 printf ("%s\n", multilib_dir
);
6697 if (print_multiarch
)
6699 if (multiarch_dir
== NULL
)
6702 printf ("%s\n", multiarch_dir
);
6708 if (target_system_root
)
6710 if (target_sysroot_suffix
)
6711 printf ("%s%s\n", target_system_root
, target_sysroot_suffix
);
6713 printf ("%s\n", target_system_root
);
6718 if (print_multi_os_directory
)
6720 if (multilib_os_dir
== NULL
)
6723 printf ("%s\n", multilib_os_dir
);
6727 if (print_sysroot_headers_suffix
)
6729 if (*sysroot_hdrs_suffix_spec
)
6731 printf("%s\n", (target_sysroot_hdrs_suffix
6732 ? target_sysroot_hdrs_suffix
6737 /* The error status indicates that only one set of fixed
6738 headers should be built. */
6739 fatal_error ("not configured with sysroot headers suffix");
6742 if (print_help_list
)
6748 printf (_("\nFor bug reporting instructions, please see:\n"));
6749 printf ("%s.\n", bug_report_url
);
6754 /* We do not exit here. Instead we have created a fake input file
6755 called 'help-dummy' which needs to be compiled, and we pass this
6756 on the various sub-processes, along with the --help switch.
6757 Ensure their output appears after ours. */
6758 fputc ('\n', stdout
);
6764 printf (_("%s %s%s\n"), progname
, pkgversion_string
,
6766 printf ("Copyright %s 2013 Free Software Foundation, Inc.\n",
6768 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
6769 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
6774 /* We do not exit here. We use the same mechanism of --help to print
6775 the version of the sub-processes. */
6776 fputc ('\n', stdout
);
6785 fnotice (stderr
, "Target: %s\n", spec_machine
);
6786 fnotice (stderr
, "Configured with: %s\n", configuration_arguments
);
6788 #ifdef THREAD_MODEL_SPEC
6789 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6790 but there's no point in doing all this processing just to get
6791 thread_model back. */
6792 obstack_init (&obstack
);
6793 do_spec_1 (THREAD_MODEL_SPEC
, 0, thread_model
);
6794 obstack_1grow (&obstack
, '\0');
6795 thrmod
= XOBFINISH (&obstack
, const char *);
6797 thrmod
= thread_model
;
6800 fnotice (stderr
, "Thread model: %s\n", thrmod
);
6802 /* compiler_version is truncated at the first space when initialized
6803 from version string, so truncate version_string at the first space
6804 before comparing. */
6805 for (n
= 0; version_string
[n
]; n
++)
6806 if (version_string
[n
] == ' ')
6809 if (! strncmp (version_string
, compiler_version
, n
)
6810 && compiler_version
[n
] == 0)
6811 fnotice (stderr
, "gcc version %s %s\n", version_string
,
6814 fnotice (stderr
, "gcc driver version %s %sexecuting gcc version %s\n",
6815 version_string
, pkgversion_string
, compiler_version
);
6821 if (n_infiles
== added_libraries
)
6822 fatal_error ("no input files");
6827 /* Make a place to record the compiler output file names
6828 that correspond to the input files. */
6831 i
+= lang_specific_extra_outfiles
;
6832 outfiles
= XCNEWVEC (const char *, i
);
6834 /* Record which files were specified explicitly as link input. */
6836 explicit_link_files
= XCNEWVEC (char, n_infiles
);
6838 combine_inputs
= have_o
|| flag_wpa
;
6840 for (i
= 0; (int) i
< n_infiles
; i
++)
6842 const char *name
= infiles
[i
].name
;
6843 struct compiler
*compiler
= lookup_compiler (name
,
6845 infiles
[i
].language
);
6847 if (compiler
&& !(compiler
->combinable
))
6848 combine_inputs
= false;
6850 if (lang_n_infiles
> 0 && compiler
!= input_file_compiler
6851 && infiles
[i
].language
&& infiles
[i
].language
[0] != '*')
6852 infiles
[i
].incompiler
= compiler
;
6856 input_file_compiler
= compiler
;
6857 infiles
[i
].incompiler
= compiler
;
6861 /* Since there is no compiler for this input file, assume it is a
6863 explicit_link_files
[i
] = 1;
6864 infiles
[i
].incompiler
= NULL
;
6866 infiles
[i
].compiled
= false;
6867 infiles
[i
].preprocessed
= false;
6870 if (!combine_inputs
&& have_c
&& have_o
&& lang_n_infiles
> 1)
6871 fatal_error ("cannot specify -o with -c, -S or -E with multiple files");
6873 for (i
= 0; (int) i
< n_infiles
; i
++)
6875 int this_file_error
= 0;
6877 /* Tell do_spec what to substitute for %i. */
6879 input_file_number
= i
;
6880 set_input (infiles
[i
].name
);
6882 if (infiles
[i
].compiled
)
6885 /* Use the same thing in %o, unless cp->spec says otherwise. */
6887 outfiles
[i
] = gcc_input_filename
;
6889 /* Figure out which compiler from the file's suffix. */
6892 = lookup_compiler (infiles
[i
].name
, input_filename_length
,
6893 infiles
[i
].language
);
6895 if (input_file_compiler
)
6897 /* Ok, we found an applicable compiler. Run its spec. */
6899 if (input_file_compiler
->spec
[0] == '#')
6901 error ("%s: %s compiler not installed on this system",
6902 gcc_input_filename
, &input_file_compiler
->spec
[1]);
6903 this_file_error
= 1;
6909 free (debug_check_temp_file
[0]);
6910 debug_check_temp_file
[0] = NULL
;
6912 free (debug_check_temp_file
[1]);
6913 debug_check_temp_file
[1] = NULL
;
6916 value
= do_spec (input_file_compiler
->spec
);
6917 infiles
[i
].compiled
= true;
6919 this_file_error
= 1;
6920 else if (compare_debug
&& debug_check_temp_file
[0])
6923 inform (0, "recompiling with -fcompare-debug");
6925 compare_debug
= -compare_debug
;
6926 n_switches
= n_switches_debug_check
[1];
6927 n_switches_alloc
= n_switches_alloc_debug_check
[1];
6928 switches
= switches_debug_check
[1];
6930 value
= do_spec (input_file_compiler
->spec
);
6932 compare_debug
= -compare_debug
;
6933 n_switches
= n_switches_debug_check
[0];
6934 n_switches_alloc
= n_switches_alloc_debug_check
[0];
6935 switches
= switches_debug_check
[0];
6939 error ("during -fcompare-debug recompilation");
6940 this_file_error
= 1;
6943 gcc_assert (debug_check_temp_file
[1]
6944 && filename_cmp (debug_check_temp_file
[0],
6945 debug_check_temp_file
[1]));
6948 inform (0, "comparing final insns dumps");
6950 if (compare_files (debug_check_temp_file
))
6951 this_file_error
= 1;
6956 free (debug_check_temp_file
[0]);
6957 debug_check_temp_file
[0] = NULL
;
6959 free (debug_check_temp_file
[1]);
6960 debug_check_temp_file
[1] = NULL
;
6965 /* If this file's name does not contain a recognized suffix,
6966 record it as explicit linker input. */
6969 explicit_link_files
[i
] = 1;
6971 /* Clear the delete-on-failure queue, deleting the files in it
6972 if this compilation failed. */
6974 if (this_file_error
)
6976 delete_failure_queue ();
6979 /* If this compilation succeeded, don't delete those files later. */
6980 clear_failure_queue ();
6983 /* Reset the input file name to the first compile/object file name, for use
6984 with %b in LINK_SPEC. We use the first input file that we can find
6985 a compiler to compile it instead of using infiles.language since for
6986 languages other than C we use aliases that we then lookup later. */
6991 for (i
= 0; i
< n_infiles
; i
++)
6992 if (infiles
[i
].incompiler
6993 || (infiles
[i
].language
&& infiles
[i
].language
[0] != '*'))
6995 set_input (infiles
[i
].name
);
7002 /* Make sure INPUT_FILE_NUMBER points to first available open
7004 input_file_number
= n_infiles
;
7005 if (lang_specific_pre_link ())
7009 /* Determine if there are any linker input files. */
7010 num_linker_inputs
= 0;
7011 for (i
= 0; (int) i
< n_infiles
; i
++)
7012 if (explicit_link_files
[i
] || outfiles
[i
] != NULL
)
7013 num_linker_inputs
++;
7015 /* Run ld to link all the compiler output files. */
7017 if (num_linker_inputs
> 0 && !seen_error () && print_subprocess_help
< 2)
7019 int tmp
= execution_count
;
7023 #if HAVE_LTO_PLUGIN > 0
7024 #if HAVE_LTO_PLUGIN == 2
7025 const char *fno_use_linker_plugin
= "fno-use-linker-plugin";
7027 const char *fuse_linker_plugin
= "fuse-linker-plugin";
7031 /* We'll use ld if we can't find collect2. */
7032 if (! strcmp (linker_name_spec
, "collect2"))
7034 char *s
= find_a_file (&exec_prefixes
, "collect2", X_OK
, false);
7036 linker_name_spec
= "ld";
7039 #if HAVE_LTO_PLUGIN > 0
7040 #if HAVE_LTO_PLUGIN == 2
7041 if (!switch_matches (fno_use_linker_plugin
,
7042 fno_use_linker_plugin
7043 + strlen (fno_use_linker_plugin
), 0))
7045 if (switch_matches (fuse_linker_plugin
,
7047 + strlen (fuse_linker_plugin
), 0))
7050 char *temp_spec
= find_a_file (&exec_prefixes
,
7051 LTOPLUGINSONAME
, R_OK
,
7054 fatal_error ("-fuse-linker-plugin, but %s not found",
7056 linker_plugin_file_spec
= convert_white_space (temp_spec
);
7059 lto_gcc_spec
= argv
[0];
7062 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
7064 putenv_from_prefixes (&exec_prefixes
, "COMPILER_PATH", false);
7065 putenv_from_prefixes (&startfile_prefixes
, LIBRARY_PATH_ENV
, true);
7067 if (print_subprocess_help
== 1)
7069 printf (_("\nLinker options\n==============\n\n"));
7070 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
7071 " to the linker.\n\n"));
7074 value
= do_spec (link_command_spec
);
7077 linker_was_run
= (tmp
!= execution_count
);
7080 /* If options said don't run linker,
7081 complain about input files to be given to the linker. */
7083 if (! linker_was_run
&& !seen_error ())
7084 for (i
= 0; (int) i
< n_infiles
; i
++)
7085 if (explicit_link_files
[i
]
7086 && !(infiles
[i
].language
&& infiles
[i
].language
[0] == '*'))
7087 warning (0, "%s: linker input file unused because linking not done",
7090 /* Delete some or all of the temporary files we made. */
7093 delete_failure_queue ();
7094 delete_temp_files ();
7096 if (print_help_list
)
7098 printf (("\nFor bug reporting instructions, please see:\n"));
7099 printf ("%s\n", bug_report_url
);
7103 return (signal_count
!= 0 ? 2
7104 : seen_error () ? (pass_exit_codes
? greatest_status
: 1)
7108 /* Find the proper compilation spec for the file name NAME,
7109 whose length is LENGTH. LANGUAGE is the specified language,
7110 or 0 if this file is to be passed to the linker. */
7112 static struct compiler
*
7113 lookup_compiler (const char *name
, size_t length
, const char *language
)
7115 struct compiler
*cp
;
7117 /* If this was specified by the user to be a linker input, indicate that. */
7118 if (language
!= 0 && language
[0] == '*')
7121 /* Otherwise, look for the language, if one is spec'd. */
7124 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7125 if (cp
->suffix
[0] == '@' && !strcmp (cp
->suffix
+ 1, language
))
7128 error ("language %s not recognized", language
);
7132 /* Look for a suffix. */
7133 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7135 if (/* The suffix `-' matches only the file name `-'. */
7136 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
7137 || (strlen (cp
->suffix
) < length
7138 /* See if the suffix matches the end of NAME. */
7139 && !strcmp (cp
->suffix
,
7140 name
+ length
- strlen (cp
->suffix
))
7145 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
7146 /* Look again, but case-insensitively this time. */
7148 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7150 if (/* The suffix `-' matches only the file name `-'. */
7151 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
7152 || (strlen (cp
->suffix
) < length
7153 /* See if the suffix matches the end of NAME. */
7154 && ((!strcmp (cp
->suffix
,
7155 name
+ length
- strlen (cp
->suffix
))
7156 || !strpbrk (cp
->suffix
, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
7157 && !strcasecmp (cp
->suffix
,
7158 name
+ length
- strlen (cp
->suffix
)))
7164 if (cp
>= compilers
)
7166 if (cp
->spec
[0] != '@')
7167 /* A non-alias entry: return it. */
7170 /* An alias entry maps a suffix to a language.
7171 Search for the language; pass 0 for NAME and LENGTH
7172 to avoid infinite recursion if language not found. */
7173 return lookup_compiler (NULL
, 0, cp
->spec
+ 1);
7179 save_string (const char *s
, int len
)
7181 char *result
= XNEWVEC (char, len
+ 1);
7183 memcpy (result
, s
, len
);
7189 pfatal_with_name (const char *name
)
7191 perror_with_name (name
);
7192 delete_temp_files ();
7197 perror_with_name (const char *name
)
7199 error ("%s: %m", name
);
7203 validate_switches_from_spec (const char *spec
, bool user
)
7205 const char *p
= spec
;
7208 if (c
== '%' && (*p
== '{' || *p
== '<' || (*p
== 'W' && *++p
== '{')))
7209 /* We have a switch spec. */
7210 p
= validate_switches (p
+ 1, user
);
7214 validate_all_switches (void)
7216 struct compiler
*comp
;
7217 struct spec_list
*spec
;
7219 for (comp
= compilers
; comp
->spec
; comp
++)
7220 validate_switches_from_spec (comp
->spec
, false);
7222 /* Look through the linked list of specs read from the specs file. */
7223 for (spec
= specs
; spec
; spec
= spec
->next
)
7224 validate_switches_from_spec (*spec
->ptr_spec
, spec
->user_p
);
7226 validate_switches_from_spec (link_command_spec
, false);
7229 /* Look at the switch-name that comes after START
7230 and mark as valid all supplied switches that match it. */
7233 validate_switches (const char *start
, bool user_spec
)
7235 const char *p
= start
;
7239 bool suffix
= false;
7240 bool starred
= false;
7242 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7251 if (*p
== '.' || *p
== ',')
7255 while (ISIDNUM (*p
) || *p
== '-' || *p
== '+' || *p
== '='
7256 || *p
== ',' || *p
== '.' || *p
== '@')
7261 starred
= true, p
++;
7267 /* Mark all matching switches as valid. */
7268 for (i
= 0; i
< n_switches
; i
++)
7269 if (!strncmp (switches
[i
].part1
, atom
, len
)
7270 && (starred
|| switches
[i
].part1
[len
] == '\0')
7271 && (switches
[i
].known
|| user_spec
))
7272 switches
[i
].validated
= true;
7276 if (*p
&& (p
[-1] == '|' || p
[-1] == '&'))
7279 if (*p
&& p
[-1] == ':')
7281 while (*p
&& *p
!= ';' && *p
!= '}')
7286 if (*p
== '{' || *p
== '<')
7287 p
= validate_switches (p
+1, user_spec
);
7288 else if (p
[0] == 'W' && p
[1] == '{')
7289 p
= validate_switches (p
+2, user_spec
);
7296 if (*p
&& p
[-1] == ';')
7310 static struct mdswitchstr
*mdswitches
;
7311 static int n_mdswitches
;
7313 /* Check whether a particular argument was used. The first time we
7314 canonicalize the switches to keep only the ones we care about. */
7317 used_arg (const char *p
, int len
)
7322 const char *replace
;
7327 static struct mswitchstr
*mswitches
;
7328 static int n_mswitches
;
7333 struct mswitchstr
*matches
;
7337 /* Break multilib_matches into the component strings of string
7338 and replacement string. */
7339 for (q
= multilib_matches
; *q
!= '\0'; q
++)
7344 = (struct mswitchstr
*) alloca ((sizeof (struct mswitchstr
)) * cnt
);
7346 q
= multilib_matches
;
7355 fatal_error ("multilib spec %qs is invalid",
7360 matches
[i
].len
= q
- matches
[i
].str
;
7362 matches
[i
].replace
= ++q
;
7363 while (*q
!= ';' && *q
!= '\0')
7366 goto invalid_matches
;
7369 matches
[i
].rep_len
= q
- matches
[i
].replace
;
7375 /* Now build a list of the replacement string for switches that we care
7376 about. Make sure we allocate at least one entry. This prevents
7377 xmalloc from calling fatal, and prevents us from re-executing this
7380 = XNEWVEC (struct mswitchstr
, n_mdswitches
+ (n_switches
? n_switches
: 1));
7381 for (i
= 0; i
< n_switches
; i
++)
7382 if ((switches
[i
].live_cond
& SWITCH_IGNORE
) == 0)
7384 int xlen
= strlen (switches
[i
].part1
);
7385 for (j
= 0; j
< cnt
; j
++)
7386 if (xlen
== matches
[j
].len
7387 && ! strncmp (switches
[i
].part1
, matches
[j
].str
, xlen
))
7389 mswitches
[n_mswitches
].str
= matches
[j
].replace
;
7390 mswitches
[n_mswitches
].len
= matches
[j
].rep_len
;
7391 mswitches
[n_mswitches
].replace
= (char *) 0;
7392 mswitches
[n_mswitches
].rep_len
= 0;
7398 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7399 on the command line nor any options mutually incompatible with
7401 for (i
= 0; i
< n_mdswitches
; i
++)
7405 for (q
= multilib_options
; *q
!= '\0'; q
++)
7411 while (strncmp (q
, mdswitches
[i
].str
, mdswitches
[i
].len
) != 0
7412 || strchr (" /", q
[mdswitches
[i
].len
]) == NULL
)
7414 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
7421 if (*q
!= ' ' && *q
!= '\0')
7423 while (*r
!= ' ' && *r
!= '\0')
7426 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
7429 if (used_arg (r
, q
- r
))
7434 mswitches
[n_mswitches
].str
= mdswitches
[i
].str
;
7435 mswitches
[n_mswitches
].len
= mdswitches
[i
].len
;
7436 mswitches
[n_mswitches
].replace
= (char *) 0;
7437 mswitches
[n_mswitches
].rep_len
= 0;
7450 for (i
= 0; i
< n_mswitches
; i
++)
7451 if (len
== mswitches
[i
].len
&& ! strncmp (p
, mswitches
[i
].str
, len
))
7458 default_arg (const char *p
, int len
)
7462 for (i
= 0; i
< n_mdswitches
; i
++)
7463 if (len
== mdswitches
[i
].len
&& ! strncmp (p
, mdswitches
[i
].str
, len
))
7469 /* Work out the subdirectory to use based on the options. The format of
7470 multilib_select is a list of elements. Each element is a subdirectory
7471 name followed by a list of options followed by a semicolon. The format
7472 of multilib_exclusions is the same, but without the preceding
7473 directory. First gcc will check the exclusions, if none of the options
7474 beginning with an exclamation point are present, and all of the other
7475 options are present, then we will ignore this completely. Passing
7476 that, gcc will consider each multilib_select in turn using the same
7477 rules for matching the options. If a match is found, that subdirectory
7479 A subdirectory name is optionally followed by a colon and the corresponding
7483 set_multilib_dir (void)
7486 unsigned int this_path_len
;
7487 const char *this_path
, *this_arg
;
7488 const char *start
, *end
;
7490 int ok
, ndfltok
, first
;
7493 start
= multilib_defaults
;
7494 while (*start
== ' ' || *start
== '\t')
7496 while (*start
!= '\0')
7499 while (*start
!= ' ' && *start
!= '\t' && *start
!= '\0')
7501 while (*start
== ' ' || *start
== '\t')
7509 mdswitches
= XNEWVEC (struct mdswitchstr
, n_mdswitches
);
7510 for (start
= multilib_defaults
; *start
!= '\0'; start
= end
+ 1)
7512 while (*start
== ' ' || *start
== '\t')
7518 for (end
= start
+ 1;
7519 *end
!= ' ' && *end
!= '\t' && *end
!= '\0'; end
++)
7522 obstack_grow (&multilib_obstack
, start
, end
- start
);
7523 obstack_1grow (&multilib_obstack
, 0);
7524 mdswitches
[i
].str
= XOBFINISH (&multilib_obstack
, const char *);
7525 mdswitches
[i
++].len
= end
- start
;
7532 p
= multilib_exclusions
;
7535 /* Ignore newlines. */
7542 /* Check the arguments. */
7549 fatal_error ("multilib exclusions %qs is invalid",
7550 multilib_exclusions
);
7560 while (*p
!= ' ' && *p
!= ';')
7563 goto invalid_exclusions
;
7567 if (*this_arg
!= '!')
7575 ok
= used_arg (this_arg
, p
- this_arg
);
7590 p
= multilib_select
;
7592 /* Append multilib reuse rules if any. With those rules, we can reuse
7593 one multilib for certain different options sets. */
7594 if (strlen (multilib_reuse
) > 0)
7595 p
= concat (p
, multilib_reuse
, NULL
);
7599 /* Ignore newlines. */
7606 /* Get the initial path. */
7613 fatal_error ("multilib select %qs %qs is invalid",
7614 multilib_select
, multilib_reuse
);
7618 this_path_len
= p
- this_path
;
7620 /* Check the arguments. */
7627 goto invalid_select
;
7636 while (*p
!= ' ' && *p
!= ';')
7639 goto invalid_select
;
7643 if (*this_arg
!= '!')
7651 /* If this is a default argument, we can just ignore it.
7652 This is true even if this_arg begins with '!'. Beginning
7653 with '!' does not mean that this argument is necessarily
7654 inappropriate for this library: it merely means that
7655 there is a more specific library which uses this
7656 argument. If this argument is a default, we need not
7657 consider that more specific library. */
7658 ok
= used_arg (this_arg
, p
- this_arg
);
7665 if (default_arg (this_arg
, p
- this_arg
))
7674 if (this_path_len
!= 1
7675 || this_path
[0] != '.')
7677 char *new_multilib_dir
= XNEWVEC (char, this_path_len
+ 1);
7680 strncpy (new_multilib_dir
, this_path
, this_path_len
);
7681 new_multilib_dir
[this_path_len
] = '\0';
7682 q
= strchr (new_multilib_dir
, ':');
7685 multilib_dir
= new_multilib_dir
;
7692 const char *q
= this_path
, *end
= this_path
+ this_path_len
;
7694 while (q
< end
&& *q
!= ':')
7698 const char *q2
= q
+ 1, *ml_end
= end
;
7699 char *new_multilib_os_dir
;
7701 while (q2
< end
&& *q2
!= ':')
7705 new_multilib_os_dir
= XNEWVEC (char, ml_end
- q
);
7706 memcpy (new_multilib_os_dir
, q
+ 1, ml_end
- q
- 1);
7707 new_multilib_os_dir
[ml_end
- q
- 1] = '\0';
7708 multilib_os_dir
= *new_multilib_os_dir
? new_multilib_os_dir
: ".";
7710 if (q2
< end
&& *q2
== ':')
7712 char *new_multiarch_dir
= XNEWVEC (char, end
- q2
);
7713 memcpy (new_multiarch_dir
, q2
+ 1, end
- q2
- 1);
7714 new_multiarch_dir
[end
- q2
- 1] = '\0';
7715 multiarch_dir
= new_multiarch_dir
;
7724 if (multilib_dir
== NULL
&& multilib_os_dir
!= NULL
7725 && strcmp (multilib_os_dir
, ".") == 0)
7727 free (CONST_CAST (char *, multilib_os_dir
));
7728 multilib_os_dir
= NULL
;
7730 else if (multilib_dir
!= NULL
&& multilib_os_dir
== NULL
)
7731 multilib_os_dir
= multilib_dir
;
7734 /* Print out the multiple library subdirectory selection
7735 information. This prints out a series of lines. Each line looks
7736 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7737 required. Only the desired options are printed out, the negative
7738 matches. The options are print without a leading dash. There are
7739 no spaces to make it easy to use the information in the shell.
7740 Each subdirectory is printed only once. This assumes the ordering
7741 generated by the genmultilib script. Also, we leave out ones that match
7745 print_multilib_info (void)
7747 const char *p
= multilib_select
;
7748 const char *last_path
= 0, *this_path
;
7750 unsigned int last_path_len
= 0;
7755 /* Ignore newlines. */
7762 /* Get the initial path. */
7769 fatal_error ("multilib select %qs is invalid", multilib_select
);
7775 /* When --disable-multilib was used but target defines
7776 MULTILIB_OSDIRNAMES, entries starting with .: (and not starting
7777 with .:: for multiarch configurations) are there just to find
7778 multilib_os_dir, so skip them from output. */
7779 if (this_path
[0] == '.' && this_path
[1] == ':' && this_path
[2] != ':')
7782 /* Check for matches with the multilib_exclusions. We don't bother
7783 with the '!' in either list. If any of the exclusion rules match
7784 all of its options with the select rule, we skip it. */
7786 const char *e
= multilib_exclusions
;
7787 const char *this_arg
;
7792 /* Ignore newlines. */
7799 /* Check the arguments. */
7808 fatal_error ("multilib exclusion %qs is invalid",
7809 multilib_exclusions
);
7820 while (*e
!= ' ' && *e
!= ';')
7823 goto invalid_exclusion
;
7831 int len
= e
- this_arg
;
7834 goto invalid_select
;
7838 while (*q
!= ' ' && *q
!= ';')
7841 goto invalid_select
;
7845 if (! strncmp (arg
, this_arg
,
7846 (len
< q
- arg
) ? q
- arg
: len
)
7847 || default_arg (this_arg
, e
- this_arg
))
7877 /* If this is a duplicate, skip it. */
7878 skip
= (last_path
!= 0
7879 && (unsigned int) (p
- this_path
) == last_path_len
7880 && ! filename_ncmp (last_path
, this_path
, last_path_len
));
7882 last_path
= this_path
;
7883 last_path_len
= p
- this_path
;
7886 /* If this directory requires any default arguments, we can skip
7887 it. We will already have printed a directory identical to
7888 this one which does not require that default argument. */
7899 goto invalid_select
;
7906 while (*q
!= ' ' && *q
!= ';')
7909 goto invalid_select
;
7914 && default_arg (arg
, q
- arg
))
7929 for (p1
= last_path
; p1
< p
&& *p1
!= ':'; p1
++)
7940 goto invalid_select
;
7948 use_arg
= *p
!= '!';
7953 while (*p
!= ' ' && *p
!= ';')
7956 goto invalid_select
;
7968 /* If there are extra options, print them now. */
7969 if (multilib_extra
&& *multilib_extra
)
7971 int print_at
= TRUE
;
7974 for (q
= multilib_extra
; *q
!= '\0'; q
++)
7995 /* getenv built-in spec function.
7997 Returns the value of the environment variable given by its first
7998 argument, concatenated with the second argument. If the
7999 environment variable is not defined, a fatal error is issued. */
8002 getenv_spec_function (int argc
, const char **argv
)
8012 value
= getenv (argv
[0]);
8014 fatal_error ("environment variable %qs not defined", argv
[0]);
8016 /* We have to escape every character of the environment variable so
8017 they are not interpreted as active spec characters. A
8018 particularly painful case is when we are reading a variable
8019 holding a windows path complete with \ separators. */
8020 len
= strlen (value
) * 2 + strlen (argv
[1]) + 1;
8021 result
= XNEWVAR (char, len
);
8022 for (ptr
= result
; *value
; ptr
+= 2)
8028 strcpy (ptr
, argv
[1]);
8033 /* if-exists built-in spec function.
8035 Checks to see if the file specified by the absolute pathname in
8036 ARGS exists. Returns that pathname if found.
8038 The usual use for this function is to check for a library file
8039 (whose name has been expanded with %s). */
8042 if_exists_spec_function (int argc
, const char **argv
)
8044 /* Must have only one argument. */
8045 if (argc
== 1 && IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
8051 /* if-exists-else built-in spec function.
8053 This is like if-exists, but takes an additional argument which
8054 is returned if the first argument does not exist. */
8057 if_exists_else_spec_function (int argc
, const char **argv
)
8059 /* Must have exactly two arguments. */
8063 if (IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
8069 /* replace-outfile built-in spec function.
8071 This looks for the first argument in the outfiles array's name and
8072 replaces it with the second argument. */
8075 replace_outfile_spec_function (int argc
, const char **argv
)
8078 /* Must have exactly two arguments. */
8082 for (i
= 0; i
< n_infiles
; i
++)
8084 if (outfiles
[i
] && !filename_cmp (outfiles
[i
], argv
[0]))
8085 outfiles
[i
] = xstrdup (argv
[1]);
8090 /* remove-outfile built-in spec function.
8092 * This looks for the first argument in the outfiles array's name and
8096 remove_outfile_spec_function (int argc
, const char **argv
)
8099 /* Must have exactly one argument. */
8103 for (i
= 0; i
< n_infiles
; i
++)
8105 if (outfiles
[i
] && !filename_cmp (outfiles
[i
], argv
[0]))
8111 /* Given two version numbers, compares the two numbers.
8112 A version number must match the regular expression
8113 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
8116 compare_version_strings (const char *v1
, const char *v2
)
8121 if (regcomp (&r
, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
8122 REG_EXTENDED
| REG_NOSUB
) != 0)
8124 rresult
= regexec (&r
, v1
, 0, NULL
, 0);
8125 if (rresult
== REG_NOMATCH
)
8126 fatal_error ("invalid version number %qs", v1
);
8127 else if (rresult
!= 0)
8129 rresult
= regexec (&r
, v2
, 0, NULL
, 0);
8130 if (rresult
== REG_NOMATCH
)
8131 fatal_error ("invalid version number %qs", v2
);
8132 else if (rresult
!= 0)
8135 return strverscmp (v1
, v2
);
8139 /* version_compare built-in spec function.
8141 This takes an argument of the following form:
8143 <comparison-op> <arg1> [<arg2>] <switch> <result>
8145 and produces "result" if the comparison evaluates to true,
8146 and nothing if it doesn't.
8148 The supported <comparison-op> values are:
8150 >= true if switch is a later (or same) version than arg1
8152 < true if switch is an earlier version than arg1
8154 >< true if switch is arg1 or later, and earlier than arg2
8155 <> true if switch is earlier than arg1 or is arg2 or later
8157 If the switch is not present, the condition is false unless
8158 the first character of the <comparison-op> is '!'.
8161 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
8162 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
8165 version_compare_spec_function (int argc
, const char **argv
)
8169 const char *switch_value
= NULL
;
8174 fatal_error ("too few arguments to %%:version-compare");
8175 if (argv
[0][0] == '\0')
8177 if ((argv
[0][1] == '<' || argv
[0][1] == '>') && argv
[0][0] != '!')
8179 if (argc
!= nargs
+ 3)
8180 fatal_error ("too many arguments to %%:version-compare");
8182 switch_len
= strlen (argv
[nargs
+ 1]);
8183 for (i
= 0; i
< n_switches
; i
++)
8184 if (!strncmp (switches
[i
].part1
, argv
[nargs
+ 1], switch_len
)
8185 && check_live_switch (i
, switch_len
))
8186 switch_value
= switches
[i
].part1
+ switch_len
;
8188 if (switch_value
== NULL
)
8192 comp1
= compare_version_strings (switch_value
, argv
[1]);
8194 comp2
= compare_version_strings (switch_value
, argv
[2]);
8196 comp2
= -1; /* This value unused. */
8199 switch (argv
[0][0] << 8 | argv
[0][1])
8201 case '>' << 8 | '=':
8202 result
= comp1
>= 0;
8204 case '!' << 8 | '<':
8205 result
= comp1
>= 0 || switch_value
== NULL
;
8210 case '!' << 8 | '>':
8211 result
= comp1
< 0 || switch_value
== NULL
;
8213 case '>' << 8 | '<':
8214 result
= comp1
>= 0 && comp2
< 0;
8216 case '<' << 8 | '>':
8217 result
= comp1
< 0 || comp2
>= 0;
8221 fatal_error ("unknown operator %qs in %%:version-compare", argv
[0]);
8226 return argv
[nargs
+ 2];
8229 /* %:include builtin spec function. This differs from %include in that it
8230 can be nested inside a spec, and thus be conditionalized. It takes
8231 one argument, the filename, and looks for it in the startfile path.
8232 The result is always NULL, i.e. an empty expansion. */
8235 include_spec_function (int argc
, const char **argv
)
8242 file
= find_a_file (&startfile_prefixes
, argv
[0], R_OK
, true);
8243 read_specs (file
? file
: argv
[0], false, false);
8248 /* %:find-file spec function. This function replaces its argument by
8249 the file found through find_file, that is the -print-file-name gcc
8252 find_file_spec_function (int argc
, const char **argv
)
8259 file
= find_file (argv
[0]);
8264 /* %:find-plugindir spec function. This function replaces its argument
8265 by the -iplugindir=<dir> option. `dir' is found through find_file, that
8266 is the -print-file-name gcc program option. */
8268 find_plugindir_spec_function (int argc
, const char **argv ATTRIBUTE_UNUSED
)
8275 option
= concat ("-iplugindir=", find_file ("plugin"), NULL
);
8280 /* %:print-asm-header spec function. Print a banner to say that the
8281 following output is from the assembler. */
8284 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED
,
8285 const char **argv ATTRIBUTE_UNUSED
)
8287 printf (_("Assembler options\n=================\n\n"));
8288 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
8293 /* Get a random number for -frandom-seed */
8295 static unsigned HOST_WIDE_INT
8296 get_random_number (void)
8298 unsigned HOST_WIDE_INT ret
= 0;
8301 fd
= open ("/dev/urandom", O_RDONLY
);
8304 read (fd
, &ret
, sizeof (HOST_WIDE_INT
));
8310 /* Get some more or less random data. */
8311 #ifdef HAVE_GETTIMEOFDAY
8315 gettimeofday (&tv
, NULL
);
8316 ret
= tv
.tv_sec
* 1000 + tv
.tv_usec
/ 1000;
8320 time_t now
= time (NULL
);
8322 if (now
!= (time_t)-1)
8323 ret
= (unsigned) now
;
8327 return ret
^ getpid();
8330 /* %:compare-debug-dump-opt spec function. Save the last argument,
8331 expected to be the last -fdump-final-insns option, or generate a
8335 compare_debug_dump_opt_spec_function (int arg
,
8336 const char **argv ATTRIBUTE_UNUSED
)
8341 static char random_seed
[HOST_BITS_PER_WIDE_INT
/ 4 + 3];
8344 fatal_error ("too many arguments to %%:compare-debug-dump-opt");
8346 do_spec_2 ("%{fdump-final-insns=*:%*}");
8347 do_spec_1 (" ", 0, NULL
);
8349 if (argbuf
.length () > 0
8350 && strcmp (argv
[argbuf
.length () - 1], "."))
8355 name
= xstrdup (argv
[argbuf
.length () - 1]);
8360 const char *ext
= NULL
;
8362 if (argbuf
.length () > 0)
8364 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
8367 else if (!compare_debug
)
8370 do_spec_2 ("%g.gkd");
8372 do_spec_1 (" ", 0, NULL
);
8374 gcc_assert (argbuf
.length () > 0);
8376 name
= concat (argbuf
.last (), ext
, NULL
);
8378 ret
= concat ("-fdump-final-insns=", name
, NULL
);
8381 which
= compare_debug
< 0;
8382 debug_check_temp_file
[which
] = name
;
8386 unsigned HOST_WIDE_INT value
= get_random_number ();
8388 sprintf (random_seed
, HOST_WIDE_INT_PRINT_HEX
, value
);
8394 ret
= concat ("%{!frandom-seed=*:-frandom-seed=", random_seed
, "} ",
8405 static const char *debug_auxbase_opt
;
8407 /* %:compare-debug-self-opt spec function. Expands to the options
8408 that are to be passed in the second compilation of
8412 compare_debug_self_opt_spec_function (int arg
,
8413 const char **argv ATTRIBUTE_UNUSED
)
8416 fatal_error ("too many arguments to %%:compare-debug-self-opt");
8418 if (compare_debug
>= 0)
8421 do_spec_2 ("%{c|S:%{o*:%*}}");
8422 do_spec_1 (" ", 0, NULL
);
8424 if (argbuf
.length () > 0)
8425 debug_auxbase_opt
= concat ("-auxbase-strip ",
8429 debug_auxbase_opt
= NULL
;
8432 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
8433 %<fdump-final-insns=* -w -S -o %j \
8434 %{!fcompare-debug-second:-fcompare-debug-second} \
8435 ", compare_debug_opt
, NULL
);
8438 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
8439 options that are to be passed in the second compilation of
8440 compare-debug. It expects, as an argument, the basename of the
8441 current input file name, with the .gk suffix appended to it. */
8444 compare_debug_auxbase_opt_spec_function (int arg
,
8451 fatal_error ("too few arguments to %%:compare-debug-auxbase-opt");
8454 fatal_error ("too many arguments to %%:compare-debug-auxbase-opt");
8456 if (compare_debug
>= 0)
8459 len
= strlen (argv
[0]);
8460 if (len
< 3 || strcmp (argv
[0] + len
- 3, ".gk") != 0)
8461 fatal_error ("argument to %%:compare-debug-auxbase-opt "
8462 "does not end in .gk");
8464 if (debug_auxbase_opt
)
8465 return debug_auxbase_opt
;
8467 #define OPT "-auxbase "
8470 name
= (char*) xmalloc (sizeof (OPT
) + len
);
8471 memcpy (name
, OPT
, sizeof (OPT
) - 1);
8472 memcpy (name
+ sizeof (OPT
) - 1, argv
[0], len
);
8473 name
[sizeof (OPT
) - 1 + len
] = '\0';
8480 /* %:pass-through-libs spec function. Finds all -l options and input
8481 file names in the lib spec passed to it, and makes a list of them
8482 prepended with the plugin option to cause them to be passed through
8483 to the final link after all the new object files have been added. */
8486 pass_through_libs_spec_func (int argc
, const char **argv
)
8488 char *prepended
= xstrdup (" ");
8490 /* Shlemiel the painter's algorithm. Innately horrible, but at least
8491 we know that there will never be more than a handful of strings to
8492 concat, and it's only once per run, so it's not worth optimising. */
8493 for (n
= 0; n
< argc
; n
++)
8495 char *old
= prepended
;
8496 /* Anything that isn't an option is a full path to an output
8497 file; pass it through if it ends in '.a'. Among options,
8499 if (argv
[n
][0] == '-' && argv
[n
][1] == 'l')
8501 const char *lopt
= argv
[n
] + 2;
8502 /* Handle both joined and non-joined -l options. If for any
8503 reason there's a trailing -l with no joined or following
8504 arg just discard it. */
8505 if (!*lopt
&& ++n
>= argc
)
8509 prepended
= concat (prepended
, "-plugin-opt=-pass-through=-l",
8512 else if (!strcmp (".a", argv
[n
] + strlen (argv
[n
]) - 2))
8514 prepended
= concat (prepended
, "-plugin-opt=-pass-through=",
8515 argv
[n
], " ", NULL
);
8517 if (prepended
!= old
)
8523 /* %:replace-extension spec function. Replaces the extension of the
8524 first argument with the second argument. */
8527 replace_extension_spec_func (int argc
, const char **argv
)
8535 fatal_error ("too few arguments to %%:replace-extension");
8537 name
= xstrdup (argv
[0]);
8539 for (i
= strlen(name
) - 1; i
>= 0; i
--)
8540 if (IS_DIR_SEPARATOR (name
[i
]))
8543 p
= strrchr (name
+ i
+ 1, '.');
8547 result
= concat (name
, argv
[1], NULL
);
8553 /* Insert backslash before spaces in ORIG (usually a file path), to
8554 avoid being broken by spec parser.
8556 This function is needed as do_spec_1 treats white space (' ' and '\t')
8557 as the end of an argument. But in case of -plugin /usr/gcc install/xxx.so,
8558 the file name should be treated as a single argument rather than being
8559 broken into multiple. Solution is to insert '\\' before the space in a
8562 This function converts and only converts all occurrence of ' '
8563 to '\\' + ' ' and '\t' to '\\' + '\t'. For example:
8567 "a\\ b" -> "a\\\\ b"
8569 orig: input null-terminating string that was allocated by xalloc. The
8570 memory it points to might be freed in this function. Behavior undefined
8571 if ORIG wasn't xalloced or was freed already at entry.
8573 Return: ORIG if no conversion needed. Otherwise a newly allocated string
8574 that was converted from ORIG. */
8577 convert_white_space (char *orig
)
8579 int len
, number_of_space
= 0;
8581 for (len
= 0; orig
[len
]; len
++)
8582 if (orig
[len
] == ' ' || orig
[len
] == '\t') number_of_space
++;
8584 if (number_of_space
)
8586 char *new_spec
= (char *) xmalloc (len
+ number_of_space
+ 1);
8588 for (j
= 0, k
= 0; j
<= len
; j
++, k
++)
8590 if (orig
[j
] == ' ' || orig
[j
] == '\t')
8591 new_spec
[k
++] = '\\';
8592 new_spec
[k
] = orig
[j
];