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 **);
269 /* The Specs Language
271 Specs are strings containing lines, each of which (if not blank)
272 is made up of a program name, and arguments separated by spaces.
273 The program name must be exact and start from root, since no path
274 is searched and it is unreliable to depend on the current working directory.
275 Redirection of input or output is not supported; the subprograms must
276 accept filenames saying what files to read and write.
278 In addition, the specs can contain %-sequences to substitute variable text
279 or for conditional text. Here is a table of all defined %-sequences.
280 Note that spaces are not generated automatically around the results of
281 expanding these sequences; therefore, you can concatenate them together
282 or with constant text in a single argument.
284 %% substitute one % into the program name or argument.
285 %i substitute the name of the input file being processed.
286 %b substitute the basename of the input file being processed.
287 This is the substring up to (and not including) the last period
288 and not including the directory unless -save-temps was specified
289 to put temporaries in a different location.
290 %B same as %b, but include the file suffix (text after the last period).
292 substitute a file name that has suffix SUFFIX and is chosen
293 once per compilation, and mark the argument a la %d. To reduce
294 exposure to denial-of-service attacks, the file name is now
295 chosen in a way that is hard to predict even when previously
296 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
297 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
298 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
299 had been pre-processed. Previously, %g was simply substituted
300 with a file name chosen once per compilation, without regard
301 to any appended suffix (which was therefore treated just like
302 ordinary text), making such attacks more likely to succeed.
304 like %g, but if -pipe is in effect, expands simply to "-".
306 like %g, but if -pipe is in effect, expands to nothing. (We have both
307 %| and %m to accommodate differences between system assemblers; see
308 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
310 like %g, but generates a new temporary file name even if %uSUFFIX
313 substitutes the last file name generated with %uSUFFIX, generating a
314 new one if there is no such last file name. In the absence of any
315 %uSUFFIX, this is just like %gSUFFIX, except they don't share
316 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
317 would involve the generation of two distinct file names, one
318 for each `%g.s' and another for each `%U.s'. Previously, %U was
319 simply substituted with a file name chosen for the previous %u,
320 without regard to any appended suffix.
322 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
323 writable, and if save-temps is off; otherwise, substitute the name
324 of a temporary file, just like %u. This temporary file is not
325 meant for communication between processes, but rather as a junk
328 substitutes .SUFFIX for the suffixes of a matched switch's args when
329 it is subsequently output with %*. SUFFIX is terminated by the next
331 %d marks the argument containing or following the %d as a
332 temporary file name, so that that file will be deleted if GCC exits
333 successfully. Unlike %g, this contributes no text to the argument.
334 %w marks the argument containing or following the %w as the
335 "output file" of this compilation. This puts the argument
336 into the sequence of arguments that %o will substitute later.
337 %V indicates that this compilation produces no "output file".
339 like %{...} but mark last argument supplied within
340 as a file to be deleted on failure.
341 %o substitutes the names of all the output files, with spaces
342 automatically placed around them. You should write spaces
343 around the %o as well or the results are undefined.
344 %o is for use in the specs for running the linker.
345 Input files whose names have no recognized suffix are not compiled
346 at all, but they are included among the output files, so they will
348 %O substitutes the suffix for object files. Note that this is
349 handled specially when it immediately follows %g, %u, or %U
350 (with or without a suffix argument) because of the need for
351 those to form complete file names. The handling is such that
352 %O is treated exactly as if it had already been substituted,
353 except that %g, %u, and %U do not currently support additional
354 SUFFIX characters following %O as they would following, for
356 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
357 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
358 and -B options) and -imultilib as necessary.
359 %s current argument is the name of a library or startup file of some sort.
360 Search for that file in a standard list of directories
361 and substitute the full name found.
362 %eSTR Print STR as an error message. STR is terminated by a newline.
363 Use this when inconsistent options are detected.
364 %nSTR Print STR as a notice. STR is terminated by a newline.
365 %x{OPTION} Accumulate an option for %X.
366 %X Output the accumulated linker options specified by compilations.
367 %Y Output the accumulated assembler options specified by compilations.
368 %Z Output the accumulated preprocessor options specified by compilations.
369 %a process ASM_SPEC as a spec.
370 This allows config.h to specify part of the spec for running as.
371 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
372 used here. This can be used to run a post-processor after the
373 assembler has done its job.
374 %D Dump out a -L option for each directory in startfile_prefixes.
375 If multilib_dir is set, extra entries are generated with it affixed.
376 %l process LINK_SPEC as a spec.
377 %L process LIB_SPEC as a spec.
378 %M Output multilib_os_dir.
379 %G process LIBGCC_SPEC as a spec.
380 %R Output the concatenation of target_system_root and
381 target_sysroot_suffix.
382 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
383 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
384 %C process CPP_SPEC as a spec.
385 %1 process CC1_SPEC as a spec.
386 %2 process CC1PLUS_SPEC as a spec.
387 %* substitute the variable part of a matched option. (See below.)
388 Note that each comma in the substituted string is replaced by
390 %<S remove all occurrences of -S from the command line.
391 Note - this command is position dependent. % commands in the
392 spec string before this one will see -S, % commands in the
393 spec string after this one will not.
394 %>S Similar to "%<S", but keep it in the GCC command line.
395 %<S* remove all occurrences of all switches beginning with -S from the
398 Call the named function FUNCTION, passing it ARGS. ARGS is
399 first processed as a nested spec string, then split into an
400 argument vector in the usual fashion. The function returns
401 a string which is processed as if it had appeared literally
402 as part of the current spec.
403 %{S} substitutes the -S switch, if that switch was given to GCC.
404 If that switch was not specified, this substitutes nothing.
405 Here S is a metasyntactic variable.
406 %{S*} substitutes all the switches specified to GCC whose names start
407 with -S. This is used for -o, -I, etc; switches that take
408 arguments. GCC considers `-o foo' as being one switch whose
409 name starts with `o'. %{o*} would substitute this text,
410 including the space; thus, two arguments would be generated.
411 %{S*&T*} likewise, but preserve order of S and T options (the order
412 of S and T in the spec is not significant). Can be any number
413 of ampersand-separated variables; for each the wild card is
414 optional. Useful for CPP as %{D*&U*&A*}.
416 %{S:X} substitutes X, if the -S switch was given to GCC.
417 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
418 %{S*:X} substitutes X if one or more switches whose names start
419 with -S was given to GCC. Normally X is substituted only
420 once, no matter how many such switches appeared. However,
421 if %* appears somewhere in X, then X will be substituted
422 once for each matching switch, with the %* replaced by the
423 part of that switch that matched the '*'.
424 %{.S:X} substitutes X, if processing a file with suffix S.
425 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
426 %{,S:X} substitutes X, if processing a file which will use spec S.
427 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
429 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
430 combined with '!', '.', ',', and '*' as above binding stronger
432 If %* appears in X, all of the alternatives must be starred, and
433 only the first matching alternative is substituted.
434 %{S:X; if S was given to GCC, substitutes X;
435 T:Y; else if T was given to GCC, substitutes Y;
436 :D} else substitutes D. There can be as many clauses as you need.
437 This may be combined with '.', '!', ',', '|', and '*' as above.
439 %(Spec) processes a specification defined in a specs file as *Spec:
441 The conditional text X in a %{S:X} or similar construct may contain
442 other nested % constructs or spaces, or even newlines. They are
443 processed as usual, as described above. Trailing white space in X is
444 ignored. White space may also appear anywhere on the left side of the
445 colon in these constructs, except between . or * and the corresponding
448 The -O, -f, -g, -m, and -W switches are handled specifically in these
449 constructs. If another value of -O or the negated form of a -f, -m, or
450 -W switch is found later in the command line, the earlier switch
451 value is ignored, except with {S*} where S is just one letter; this
452 passes all matching options.
454 The character | at the beginning of the predicate text is used to indicate
455 that a command should be piped to the following command, but only if -pipe
458 Note that it is built into GCC which switches take arguments and which
459 do not. You might think it would be useful to generalize this to
460 allow each compiler's spec to say which switches take arguments. But
461 this cannot be done in a consistent fashion. GCC cannot even decide
462 which input files have been specified without knowing which switches
463 take arguments, and it must know which input files to compile in order
464 to tell which compilers to run.
466 GCC also knows implicitly that arguments starting in `-l' are to be
467 treated as compiler output files, and passed to the linker in their
468 proper position among the other output files. */
470 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
472 /* config.h can define ASM_SPEC to provide extra args to the assembler
473 or extra switch-translations. */
478 /* config.h can define ASM_FINAL_SPEC to run a post processor after
479 the assembler has run. */
480 #ifndef ASM_FINAL_SPEC
481 #define ASM_FINAL_SPEC \
483 objcopy --extract-dwo \
484 %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \
485 %{c:%{o*:%:replace-extension(%{o*:%*} .dwo)}%{!o*:%b.dwo}}%{!c:%b.dwo} \n\
486 objcopy --strip-dwo \
487 %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \
491 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
492 or extra switch-translations. */
497 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
498 or extra switch-translations. */
503 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
504 or extra switch-translations. */
506 #define CC1PLUS_SPEC ""
509 /* config.h can define LINK_SPEC to provide extra args to the linker
510 or extra switch-translations. */
515 /* config.h can define LIB_SPEC to override the default libraries. */
517 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
522 /* XXX: valid only for GNU ld */
523 /* XXX: should exactly match hooks provided by libmudflap.a */
524 #define MFWRAP_SPEC " %{static: %{fmudflap|fmudflapth: \
525 --wrap=malloc --wrap=free --wrap=calloc --wrap=realloc\
526 --wrap=mmap --wrap=mmap64 --wrap=munmap --wrap=alloca\
527 } %{fmudflapth: --wrap=pthread_create\
528 }} %{fmudflap|fmudflapth: --wrap=main}"
531 #define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}"
534 /* When using -fsplit-stack we need to wrap pthread_create, in order
535 to initialize the stack guard. We always use wrapping, rather than
536 shared library ordering, and we keep the wrapper function in
537 libgcc. This is not yet a real spec, though it could become one;
538 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping
539 only works with GNU ld and gold. FIXME: This is incompatible with
540 -fmudflap when linking statically, which wants to do its own
542 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}"
545 #ifdef STATIC_LIBASAN_LIBS
546 #define ADD_STATIC_LIBASAN_LIBS \
547 " %{static-libasan:" STATIC_LIBASAN_LIBS "}"
549 #define ADD_STATIC_LIBASAN_LIBS
551 #ifdef LIBASAN_EARLY_SPEC
552 #define LIBASAN_SPEC ADD_STATIC_LIBASAN_LIBS
553 #elif defined(HAVE_LD_STATIC_DYNAMIC)
554 #define LIBASAN_SPEC "%{static-libasan:" LD_STATIC_OPTION \
555 "} -lasan %{static-libasan:" LD_DYNAMIC_OPTION "}" \
556 ADD_STATIC_LIBASAN_LIBS
558 #define LIBASAN_SPEC "-lasan" ADD_STATIC_LIBASAN_LIBS
562 #ifndef LIBASAN_EARLY_SPEC
563 #define LIBASAN_EARLY_SPEC ""
567 #ifdef STATIC_LIBTSAN_LIBS
568 #define ADD_STATIC_LIBTSAN_LIBS \
569 " %{static-libtsan:" STATIC_LIBTSAN_LIBS "}"
571 #define ADD_STATIC_LIBTSAN_LIBS
573 #ifdef LIBTSAN_EARLY_SPEC
574 #define LIBTSAN_SPEC ADD_STATIC_LIBTSAN_LIBS
575 #elif defined(HAVE_LD_STATIC_DYNAMIC)
576 #define LIBTSAN_SPEC "%{static-libtsan:" LD_STATIC_OPTION \
577 "} -ltsan %{static-libtsan:" LD_DYNAMIC_OPTION "}" \
578 ADD_STATIC_LIBTSAN_LIBS
580 #define LIBTSAN_SPEC "-ltsan" ADD_STATIC_LIBTSAN_LIBS
584 #ifndef LIBTSAN_EARLY_SPEC
585 #define LIBTSAN_EARLY_SPEC ""
588 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
591 #if defined(REAL_LIBGCC_SPEC)
592 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
593 #elif defined(LINK_LIBGCC_SPECIAL_1)
594 /* Have gcc do the search for libgcc.a. */
595 #define LIBGCC_SPEC "libgcc.a%s"
597 #define LIBGCC_SPEC "-lgcc"
601 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
602 #ifndef STARTFILE_SPEC
603 #define STARTFILE_SPEC \
604 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
607 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
609 #define ENDFILE_SPEC ""
613 #define LINKER_NAME "collect2"
616 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
617 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
622 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
624 #ifndef ASM_DEBUG_SPEC
625 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
626 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
627 # define ASM_DEBUG_SPEC \
628 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
629 ? "%{!g0:%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}}" ASM_MAP \
630 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
632 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
633 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
635 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
636 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
640 #ifndef ASM_DEBUG_SPEC
641 # define ASM_DEBUG_SPEC ""
644 /* Here is the spec for running the linker, after compiling all files. */
646 /* This is overridable by the target in case they need to specify the
647 -lgcc and -lc order specially, yet not require them to override all
648 of LINK_COMMAND_SPEC. */
649 #ifndef LINK_GCC_C_SEQUENCE_SPEC
650 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
653 #ifndef LINK_SSP_SPEC
654 #ifdef TARGET_LIBC_PROVIDES_SSP
655 #define LINK_SSP_SPEC "%{fstack-protector:}"
657 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}"
661 #ifndef LINK_PIE_SPEC
663 #define LINK_PIE_SPEC "%{pie:-pie} "
665 #define LINK_PIE_SPEC "%{pie:} "
669 #ifndef LINK_BUILDID_SPEC
670 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
671 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
675 /* Conditional to test whether the LTO plugin is used or not.
676 FIXME: For slim LTO we will need to enable plugin unconditionally. This
677 still cause problems with PLUGIN_LD != LD and when plugin is built but
678 not useable. For GCC 4.6 we don't support slim LTO and thus we can enable
679 plugin only when LTO is enabled. We still honor explicit
680 -fuse-linker-plugin if the linker used understands -plugin. */
682 /* The linker has some plugin support. */
683 #if HAVE_LTO_PLUGIN > 0
684 /* The linker used has full plugin support, use LTO plugin by default. */
685 #if HAVE_LTO_PLUGIN == 2
686 #define PLUGIN_COND "!fno-use-linker-plugin:%{flto|flto=*|fuse-linker-plugin"
687 #define PLUGIN_COND_CLOSE "}"
689 /* The linker used has limited plugin support, use LTO plugin with explicit
690 -fuse-linker-plugin. */
691 #define PLUGIN_COND "fuse-linker-plugin"
692 #define PLUGIN_COND_CLOSE ""
694 #define LINK_PLUGIN_SPEC \
696 -plugin %(linker_plugin_file) \
697 -plugin-opt=%(lto_wrapper) \
698 -plugin-opt=-fresolution=%u.res \
699 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
702 /* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */
703 #define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\
704 %e-fuse-linker-plugin is not supported in this configuration}"
707 /* Linker command line options for -fsanitize= early on the command line. */
708 #ifndef SANITIZER_EARLY_SPEC
709 #define SANITIZER_EARLY_SPEC "\
710 %{!nostdlib:%{!nodefaultlibs:%{fsanitize=address:" LIBASAN_EARLY_SPEC "} \
711 %{fsanitize=thread:" LIBTSAN_EARLY_SPEC "}}}"
714 /* Linker command line options for -fsanitize= late on the command line. */
715 #ifndef SANITIZER_SPEC
716 #define SANITIZER_SPEC "\
717 %{!nostdlib:%{!nodefaultlibs:%{fsanitize=address:" LIBASAN_SPEC "\
718 %{static:%ecannot specify -static with -fsanitize=address}}\
719 %{fsanitize=thread:" LIBTSAN_SPEC "\
720 %{!pie:%{!shared:%e-fsanitize=thread linking must be done with -pie or -shared}}}}}"
723 /* -u* was put back because both BSD and SysV seem to support it. */
724 /* %{static:} simply prevents an error message if the target machine
725 doesn't handle -static. */
726 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
727 scripts which exist in user specified directories, or in standard
729 /* We pass any -flto flags on to the linker, which is expected
730 to understand them. In practice, this means it had better be collect2. */
731 /* %{e*} includes -export-dynamic; see comment in common.opt. */
732 #ifndef LINK_COMMAND_SPEC
733 #define LINK_COMMAND_SPEC "\
734 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
737 "%{flto|flto=*:%<fcompare-debug*} \
738 %{flto} %{flto=*} %l " LINK_PIE_SPEC \
739 "%{fuse-ld=*:-fuse-ld=%*}\
740 %X %{o*} %{e*} %{N} %{n} %{r}\
741 %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}}\
742 %{!nostdlib:%{!nostartfiles:%{fupc-link:%:include(upc-crtbegin.spec)%(upc_crtbegin)}}}\
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 %{fupc-link:%:include(libgupc.spec)%(link_upc)}\
747 %(mflib) " STACK_SPLIT_SPEC "\
748 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} " SANITIZER_SPEC " \
749 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
750 %{!nostdlib:%{!nostartfiles:%{fupc-link:%:include(upc-crtend.spec)%(upc_crtend)}}}\
751 %{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}"
754 #ifndef LINK_LIBGCC_SPEC
755 /* Generate -L options for startfile prefix list. */
756 # define LINK_LIBGCC_SPEC "%D"
759 #ifndef STARTFILE_PREFIX_SPEC
760 # define STARTFILE_PREFIX_SPEC ""
764 # define SYSROOT_SPEC "--sysroot=%R"
767 #ifndef SYSROOT_SUFFIX_SPEC
768 # define SYSROOT_SUFFIX_SPEC ""
771 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
772 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
775 static const char *asm_debug
= ASM_DEBUG_SPEC
;
776 static const char *cpp_spec
= CPP_SPEC
;
777 static const char *cc1_spec
= CC1_SPEC
;
778 static const char *cc1plus_spec
= CC1PLUS_SPEC
;
779 static const char *link_gcc_c_sequence_spec
= LINK_GCC_C_SEQUENCE_SPEC
;
780 static const char *link_ssp_spec
= LINK_SSP_SPEC
;
781 static const char *asm_spec
= ASM_SPEC
;
782 static const char *asm_final_spec
= ASM_FINAL_SPEC
;
783 static const char *link_spec
= LINK_SPEC
;
784 static const char *lib_spec
= LIB_SPEC
;
785 static const char *mfwrap_spec
= MFWRAP_SPEC
;
786 static const char *mflib_spec
= MFLIB_SPEC
;
787 static const char *link_gomp_spec
= "";
788 static const char *upc_crtbegin_spec
= "";
789 static const char *link_upc_spec
= "";
790 static const char *upc_crtend_spec
= "";
791 static const char *libgcc_spec
= LIBGCC_SPEC
;
792 static const char *endfile_spec
= ENDFILE_SPEC
;
793 static const char *startfile_spec
= STARTFILE_SPEC
;
794 static const char *linker_name_spec
= LINKER_NAME
;
795 static const char *linker_plugin_file_spec
= "";
796 static const char *lto_wrapper_spec
= "";
797 static const char *lto_gcc_spec
= "";
798 static const char *link_command_spec
= LINK_COMMAND_SPEC
;
799 static const char *link_libgcc_spec
= LINK_LIBGCC_SPEC
;
800 static const char *startfile_prefix_spec
= STARTFILE_PREFIX_SPEC
;
801 static const char *sysroot_spec
= SYSROOT_SPEC
;
802 static const char *sysroot_suffix_spec
= SYSROOT_SUFFIX_SPEC
;
803 static const char *sysroot_hdrs_suffix_spec
= SYSROOT_HEADERS_SUFFIX_SPEC
;
804 static const char *self_spec
= "";
806 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
807 There should be no need to override these in target dependent files,
808 but we need to copy them to the specs file so that newer versions
809 of the GCC driver can correctly drive older tool chains with the
810 appropriate -B options. */
812 /* When cpplib handles traditional preprocessing, get rid of this, and
813 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
814 that we default the front end language better. */
815 static const char *trad_capable_cpp
=
816 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}";
818 /* We don't wrap .d files in %W{} since a missing .d file, and
819 therefore no dependency entry, confuses make into thinking a .o
820 file that happens to exist is up-to-date. */
821 static const char *cpp_unique_options
=
822 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
823 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
824 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
825 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
826 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
827 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
828 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
829 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
830 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
831 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
834 /* This contains cpp options which are common with cc1_options and are passed
835 only when preprocessing only to avoid duplication. We pass the cc1 spec
836 options to the preprocessor so that it the cc1 spec may manipulate
837 options used to set target flags. Those special target flags settings may
838 in turn cause preprocessor symbols to be defined specially. */
839 static const char *cpp_options
=
840 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
841 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
842 %{undef} %{save-temps*:-fpch-preprocess}";
844 /* This contains cpp options which are not passed when the preprocessor
845 output will be used by another program. */
846 static const char *cpp_debug_options
= "%{d*}";
848 /* NB: This is shared amongst all front-ends, except for Ada. */
849 static const char *cc1_options
=
850 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
851 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
852 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
853 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
854 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
855 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
856 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
857 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\
858 %{-target-help:--target-help}\
859 %{-version:--version}\
860 %{-help=*:--help=%*}\
861 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
862 %{fsyntax-only:-o %j} %{-param*}\
863 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\
864 %{coverage:-fprofile-arcs -ftest-coverage}";
866 static const char *upc_options
= "-lang-upc \
867 %{!fno-upc-pre-include:-include gcc-upc.h}";
869 static const char *asm_options
=
870 "%{-target-help:%:print-asm-header()} "
872 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
873 to the assembler equivalents. */
874 "%{v} %{w:-W} %{I*} "
876 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
878 static const char *invoke_as
=
879 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
881 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
882 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
886 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
887 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
891 /* Some compilers have limits on line lengths, and the multilib_select
892 and/or multilib_matches strings can be very long, so we build them at
894 static struct obstack multilib_obstack
;
895 static const char *multilib_select
;
896 static const char *multilib_matches
;
897 static const char *multilib_defaults
;
898 static const char *multilib_exclusions
;
899 static const char *multilib_reuse
;
901 /* Check whether a particular argument is a default argument. */
903 #ifndef MULTILIB_DEFAULTS
904 #define MULTILIB_DEFAULTS { "" }
907 static const char *const multilib_defaults_raw
[] = MULTILIB_DEFAULTS
;
909 #ifndef DRIVER_SELF_SPECS
910 #define DRIVER_SELF_SPECS ""
913 /* Adding -fopenmp should imply pthreads. This is particularly important
914 for targets that use different start files and suchlike. */
915 #ifndef GOMP_SELF_SPECS
916 #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}"
919 /* Likewise for -fgnu-tm. */
920 #ifndef GTM_SELF_SPECS
921 #define GTM_SELF_SPECS "%{fgnu-tm: -pthread}"
924 static const char *const driver_self_specs
[] = {
925 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
926 DRIVER_SELF_SPECS
, CONFIGURE_SPECS
, GOMP_SELF_SPECS
, GTM_SELF_SPECS
929 #ifndef OPTION_DEFAULT_SPECS
930 #define OPTION_DEFAULT_SPECS { "", "" }
939 static const struct default_spec
940 option_default_specs
[] = { OPTION_DEFAULT_SPECS
};
944 struct user_specs
*next
;
945 const char *filename
;
948 static struct user_specs
*user_specs_head
, *user_specs_tail
;
951 /* Record the mapping from file suffixes for compilation specs. */
955 const char *suffix
; /* Use this compiler for input files
956 whose names end in this suffix. */
958 const char *spec
; /* To use this compiler, run this spec. */
960 const char *cpp_spec
; /* If non-NULL, substitute this spec
961 for `%C', rather than the usual
963 const int combinable
; /* If nonzero, compiler can deal with
964 multiple source files at once (IMA). */
965 const int needs_preprocessing
; /* If nonzero, source files need to
966 be run through a preprocessor. */
969 /* Pointer to a vector of `struct compiler' that gives the spec for
970 compiling a file, based on its suffix.
971 A file that does not end in any of these suffixes will be passed
972 unchanged to the loader and nothing else will be done to it.
974 An entry containing two 0s is used to terminate the vector.
976 If multiple entries match a file, the last matching one is used. */
978 static struct compiler
*compilers
;
980 /* Number of entries in `compilers', not counting the null terminator. */
982 static int n_compilers
;
984 /* The default list of file name suffixes and their compilation specs. */
986 static const struct compiler default_compilers
[] =
988 /* Add lists of suffixes of known languages here. If those languages
989 were not present when we built the driver, we will hit these copies
990 and be given a more meaningful error than "file not used since
991 linking is not done". */
992 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
993 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
994 {".mii", "#Objective-C++", 0, 0, 0},
995 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
996 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
997 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
998 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
999 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
1000 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
1001 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
1002 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
1003 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
1004 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
1005 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
1006 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
1007 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
1008 {".r", "#Ratfor", 0, 0, 0},
1009 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
1010 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
1011 {".upc", "#UPC", 0, 0, 0},
1012 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
1013 {".go", "#Go", 0, 1, 0},
1014 /* Next come the entries for C. */
1015 {".c", "@c", 0, 0, 1},
1017 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1018 external preprocessor if -save-temps is given. */
1019 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1022 %eGNU C no longer supports -traditional without -E}\
1023 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1024 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1025 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1027 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1028 cc1 %(cpp_unique_options) %(cc1_options)}}}\
1029 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
1031 "%{!E:%e-E or -x required when input is from standard input}\
1032 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
1033 {".h", "@c-header", 0, 0, 0},
1035 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1036 external preprocessor if -save-temps is given. */
1037 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1039 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1040 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1041 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1043 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
1044 %W{o*:--output-pch=%*}}%V}\
1045 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1046 cc1 %(cpp_unique_options) %(cc1_options)\
1047 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
1048 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
1049 {".i", "@cpp-output", 0, 0, 0},
1051 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
1052 {".s", "@assembler", 0, 0, 0},
1054 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
1055 {".sx", "@assembler-with-cpp", 0, 0, 0},
1056 {".S", "@assembler-with-cpp", 0, 0, 0},
1057 {"@assembler-with-cpp",
1058 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
1059 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1060 %{E|M|MM:%(cpp_debug_options)}\
1061 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1062 as %(asm_debug) %(asm_options) %|.s %A }}}}"
1064 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1065 %{E|M|MM:%(cpp_debug_options)}\
1066 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1067 as %(asm_debug) %(asm_options) %m.s %A }}}}"
1072 /* Mark end of table. */
1076 /* Number of elements in default_compilers, not counting the terminator. */
1078 static const int n_default_compilers
= ARRAY_SIZE (default_compilers
) - 1;
1080 typedef char *char_p
; /* For DEF_VEC_P. */
1082 /* A vector of options to give to the linker.
1083 These options are accumulated by %x,
1084 and substituted into the linker command with %X. */
1085 static vec
<char_p
> linker_options
;
1087 /* A vector of options to give to the assembler.
1088 These options are accumulated by -Wa,
1089 and substituted into the assembler command with %Y. */
1090 static vec
<char_p
> assembler_options
;
1092 /* A vector of options to give to the preprocessor.
1093 These options are accumulated by -Wp,
1094 and substituted into the preprocessor command with %Z. */
1095 static vec
<char_p
> preprocessor_options
;
1098 skip_whitespace (char *p
)
1102 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1103 be considered whitespace. */
1104 if (p
[0] == '\n' && p
[1] == '\n' && p
[2] == '\n')
1106 else if (*p
== '\n' || *p
== ' ' || *p
== '\t')
1120 /* Structures to keep track of prefixes to try when looking for files. */
1124 const char *prefix
; /* String to prepend to the path. */
1125 struct prefix_list
*next
; /* Next in linked list. */
1126 int require_machine_suffix
; /* Don't use without machine_suffix. */
1127 /* 2 means try both machine_suffix and just_machine_suffix. */
1128 int priority
; /* Sort key - priority within list. */
1129 int os_multilib
; /* 1 if OS multilib scheme should be used,
1130 0 for GCC multilib scheme. */
1135 struct prefix_list
*plist
; /* List of prefixes to try */
1136 int max_len
; /* Max length of a prefix in PLIST */
1137 const char *name
; /* Name of this list (used in config stuff) */
1140 /* List of prefixes to try when looking for executables. */
1142 static struct path_prefix exec_prefixes
= { 0, 0, "exec" };
1144 /* List of prefixes to try when looking for startup (crt0) files. */
1146 static struct path_prefix startfile_prefixes
= { 0, 0, "startfile" };
1148 /* List of prefixes to try when looking for include files. */
1150 static struct path_prefix include_prefixes
= { 0, 0, "include" };
1152 /* Suffix to attach to directories searched for commands.
1153 This looks like `MACHINE/VERSION/'. */
1155 static const char *machine_suffix
= 0;
1157 /* Suffix to attach to directories searched for commands.
1158 This is just `MACHINE/'. */
1160 static const char *just_machine_suffix
= 0;
1162 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1164 static const char *gcc_exec_prefix
;
1166 /* Adjusted value of standard_libexec_prefix. */
1168 static const char *gcc_libexec_prefix
;
1170 /* Default prefixes to attach to command names. */
1172 #ifndef STANDARD_STARTFILE_PREFIX_1
1173 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1175 #ifndef STANDARD_STARTFILE_PREFIX_2
1176 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1179 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1180 #undef MD_EXEC_PREFIX
1181 #undef MD_STARTFILE_PREFIX
1182 #undef MD_STARTFILE_PREFIX_1
1185 /* If no prefixes defined, use the null string, which will disable them. */
1186 #ifndef MD_EXEC_PREFIX
1187 #define MD_EXEC_PREFIX ""
1189 #ifndef MD_STARTFILE_PREFIX
1190 #define MD_STARTFILE_PREFIX ""
1192 #ifndef MD_STARTFILE_PREFIX_1
1193 #define MD_STARTFILE_PREFIX_1 ""
1196 /* These directories are locations set at configure-time based on the
1197 --prefix option provided to configure. Their initializers are
1198 defined in Makefile.in. These paths are not *directly* used when
1199 gcc_exec_prefix is set because, in that case, we know where the
1200 compiler has been installed, and use paths relative to that
1201 location instead. */
1202 static const char *const standard_exec_prefix
= STANDARD_EXEC_PREFIX
;
1203 static const char *const standard_libexec_prefix
= STANDARD_LIBEXEC_PREFIX
;
1204 static const char *const standard_bindir_prefix
= STANDARD_BINDIR_PREFIX
;
1205 static const char *const standard_startfile_prefix
= STANDARD_STARTFILE_PREFIX
;
1207 /* For native compilers, these are well-known paths containing
1208 components that may be provided by the system. For cross
1209 compilers, these paths are not used. */
1210 static const char *md_exec_prefix
= MD_EXEC_PREFIX
;
1211 static const char *md_startfile_prefix
= MD_STARTFILE_PREFIX
;
1212 static const char *md_startfile_prefix_1
= MD_STARTFILE_PREFIX_1
;
1213 static const char *const standard_startfile_prefix_1
1214 = STANDARD_STARTFILE_PREFIX_1
;
1215 static const char *const standard_startfile_prefix_2
1216 = STANDARD_STARTFILE_PREFIX_2
;
1218 /* A relative path to be used in finding the location of tools
1219 relative to the driver. */
1220 static const char *const tooldir_base_prefix
= TOOLDIR_BASE_PREFIX
;
1222 /* Subdirectory to use for locating libraries. Set by
1223 set_multilib_dir based on the compilation options. */
1225 static const char *multilib_dir
;
1227 /* Subdirectory to use for locating libraries in OS conventions. Set by
1228 set_multilib_dir based on the compilation options. */
1230 static const char *multilib_os_dir
;
1232 /* Subdirectory to use for locating libraries in multiarch conventions. Set by
1233 set_multilib_dir based on the compilation options. */
1235 static const char *multiarch_dir
;
1237 /* Structure to keep track of the specs that have been defined so far.
1238 These are accessed using %(specname) in a compiler or link
1243 /* The following 2 fields must be first */
1244 /* to allow EXTRA_SPECS to be initialized */
1245 const char *name
; /* name of the spec. */
1246 const char *ptr
; /* available ptr if no static pointer */
1248 /* The following fields are not initialized */
1249 /* by EXTRA_SPECS */
1250 const char **ptr_spec
; /* pointer to the spec itself. */
1251 struct spec_list
*next
; /* Next spec in linked list. */
1252 int name_len
; /* length of the name */
1253 bool user_p
; /* whether string come from file spec. */
1254 bool alloc_p
; /* whether string was allocated */
1257 #define INIT_STATIC_SPEC(NAME,PTR) \
1258 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, false, false }
1260 /* List of statically defined specs. */
1261 static struct spec_list static_specs
[] =
1263 INIT_STATIC_SPEC ("asm", &asm_spec
),
1264 INIT_STATIC_SPEC ("asm_debug", &asm_debug
),
1265 INIT_STATIC_SPEC ("asm_final", &asm_final_spec
),
1266 INIT_STATIC_SPEC ("asm_options", &asm_options
),
1267 INIT_STATIC_SPEC ("invoke_as", &invoke_as
),
1268 INIT_STATIC_SPEC ("cpp", &cpp_spec
),
1269 INIT_STATIC_SPEC ("cpp_options", &cpp_options
),
1270 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options
),
1271 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options
),
1272 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp
),
1273 INIT_STATIC_SPEC ("cc1", &cc1_spec
),
1274 INIT_STATIC_SPEC ("cc1_options", &cc1_options
),
1275 INIT_STATIC_SPEC ("upc_options", &upc_options
),
1276 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec
),
1277 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec
),
1278 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec
),
1279 INIT_STATIC_SPEC ("endfile", &endfile_spec
),
1280 INIT_STATIC_SPEC ("link", &link_spec
),
1281 INIT_STATIC_SPEC ("lib", &lib_spec
),
1282 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec
),
1283 INIT_STATIC_SPEC ("mflib", &mflib_spec
),
1284 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec
),
1285 INIT_STATIC_SPEC ("upc_crtbegin", &upc_crtbegin_spec
),
1286 INIT_STATIC_SPEC ("link_upc", &link_upc_spec
),
1287 INIT_STATIC_SPEC ("upc_crtend", &upc_crtend_spec
),
1288 INIT_STATIC_SPEC ("libgcc", &libgcc_spec
),
1289 INIT_STATIC_SPEC ("startfile", &startfile_spec
),
1290 INIT_STATIC_SPEC ("cross_compile", &cross_compile
),
1291 INIT_STATIC_SPEC ("version", &compiler_version
),
1292 INIT_STATIC_SPEC ("multilib", &multilib_select
),
1293 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults
),
1294 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra
),
1295 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches
),
1296 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions
),
1297 INIT_STATIC_SPEC ("multilib_options", &multilib_options
),
1298 INIT_STATIC_SPEC ("multilib_reuse", &multilib_reuse
),
1299 INIT_STATIC_SPEC ("linker", &linker_name_spec
),
1300 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec
),
1301 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec
),
1302 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec
),
1303 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec
),
1304 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix
),
1305 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix
),
1306 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1
),
1307 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec
),
1308 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec
),
1309 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec
),
1310 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec
),
1311 INIT_STATIC_SPEC ("self_spec", &self_spec
),
1314 #ifdef EXTRA_SPECS /* additional specs needed */
1315 /* Structure to keep track of just the first two args of a spec_list.
1316 That is all that the EXTRA_SPECS macro gives us. */
1319 const char *const name
;
1320 const char *const ptr
;
1323 static const struct spec_list_1 extra_specs_1
[] = { EXTRA_SPECS
};
1324 static struct spec_list
*extra_specs
= (struct spec_list
*) 0;
1327 /* List of dynamically allocates specs that have been defined so far. */
1329 static struct spec_list
*specs
= (struct spec_list
*) 0;
1331 /* List of static spec functions. */
1333 static const struct spec_function static_spec_functions
[] =
1335 { "getenv", getenv_spec_function
},
1336 { "if-exists", if_exists_spec_function
},
1337 { "if-exists-else", if_exists_else_spec_function
},
1338 { "replace-outfile", replace_outfile_spec_function
},
1339 { "remove-outfile", remove_outfile_spec_function
},
1340 { "version-compare", version_compare_spec_function
},
1341 { "include", include_spec_function
},
1342 { "find-file", find_file_spec_function
},
1343 { "find-plugindir", find_plugindir_spec_function
},
1344 { "print-asm-header", print_asm_header_spec_function
},
1345 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function
},
1346 { "compare-debug-self-opt", compare_debug_self_opt_spec_function
},
1347 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function
},
1348 { "pass-through-libs", pass_through_libs_spec_func
},
1349 { "replace-extension", replace_extension_spec_func
},
1350 #ifdef EXTRA_SPEC_FUNCTIONS
1351 EXTRA_SPEC_FUNCTIONS
1356 static int processing_spec_function
;
1358 /* Add appropriate libgcc specs to OBSTACK, taking into account
1359 various permutations of -shared-libgcc, -shared, and such. */
1361 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1363 #ifndef USE_LD_AS_NEEDED
1364 #define USE_LD_AS_NEEDED 0
1368 init_gcc_specs (struct obstack
*obstack
, const char *shared_name
,
1369 const char *static_name
, const char *eh_name
)
1373 buf
= concat ("%{static|static-libgcc:", static_name
, " ", eh_name
, "}"
1374 "%{!static:%{!static-libgcc:"
1375 #if USE_LD_AS_NEEDED
1376 "%{!shared-libgcc:",
1377 static_name
, " --as-needed ", shared_name
, " --no-as-needed"
1380 shared_name
, "%{!shared: ", static_name
, "}"
1384 "%{!shared-libgcc:", static_name
, " ", eh_name
, "}"
1385 "%{shared-libgcc:", shared_name
, " ", static_name
, "}"
1389 "%{shared-libgcc:", shared_name
, "}"
1390 "%{!shared-libgcc:", static_name
, "}"
1393 "%{shared:", shared_name
, "}"
1398 obstack_grow (obstack
, buf
, strlen (buf
));
1401 #endif /* ENABLE_SHARED_LIBGCC */
1403 /* Initialize the specs lookup routines. */
1408 struct spec_list
*next
= (struct spec_list
*) 0;
1409 struct spec_list
*sl
= (struct spec_list
*) 0;
1413 return; /* Already initialized. */
1416 fnotice (stderr
, "Using built-in specs.\n");
1419 extra_specs
= XCNEWVEC (struct spec_list
, ARRAY_SIZE (extra_specs_1
));
1421 for (i
= ARRAY_SIZE (extra_specs_1
) - 1; i
>= 0; i
--)
1423 sl
= &extra_specs
[i
];
1424 sl
->name
= extra_specs_1
[i
].name
;
1425 sl
->ptr
= extra_specs_1
[i
].ptr
;
1427 sl
->name_len
= strlen (sl
->name
);
1428 sl
->ptr_spec
= &sl
->ptr
;
1433 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1435 sl
= &static_specs
[i
];
1440 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1441 /* ??? If neither -shared-libgcc nor --static-libgcc was
1442 seen, then we should be making an educated guess. Some proposed
1443 heuristics for ELF include:
1445 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1446 program will be doing dynamic loading, which will likely
1447 need the shared libgcc.
1449 (2) If "-ldl", then it's also a fair bet that we're doing
1452 (3) For each ET_DYN we're linking against (either through -lfoo
1453 or /some/path/foo.so), check to see whether it or one of
1454 its dependencies depends on a shared libgcc.
1458 If the runtime is fixed to look for program headers instead
1459 of calling __register_frame_info at all, for each object,
1460 use the shared libgcc if any EH symbol referenced.
1462 If crtstuff is fixed to not invoke __register_frame_info
1463 automatically, for each object, use the shared libgcc if
1464 any non-empty unwind section found.
1466 Doing any of this probably requires invoking an external program to
1467 do the actual object file scanning. */
1469 const char *p
= libgcc_spec
;
1472 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1473 when given the proper command line arguments. */
1476 if (in_sep
&& *p
== '-' && strncmp (p
, "-lgcc", 5) == 0)
1478 init_gcc_specs (&obstack
,
1480 #ifdef USE_LIBUNWIND_EXCEPTIONS
1486 #ifdef USE_LIBUNWIND_EXCEPTIONS
1487 # ifdef HAVE_LD_STATIC_DYNAMIC
1488 " %{!static:" LD_STATIC_OPTION
"} -lunwind"
1489 " %{!static:" LD_DYNAMIC_OPTION
"}"
1499 else if (in_sep
&& *p
== 'l' && strncmp (p
, "libgcc.a%s", 10) == 0)
1501 /* Ug. We don't know shared library extensions. Hope that
1502 systems that use this form don't do shared libraries. */
1503 init_gcc_specs (&obstack
,
1507 #ifdef USE_LIBUNWIND_EXCEPTIONS
1516 obstack_1grow (&obstack
, *p
);
1517 in_sep
= (*p
== ' ');
1522 obstack_1grow (&obstack
, '\0');
1523 libgcc_spec
= XOBFINISH (&obstack
, const char *);
1526 #ifdef USE_AS_TRADITIONAL_FORMAT
1527 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1529 static const char tf
[] = "--traditional-format ";
1530 obstack_grow (&obstack
, tf
, sizeof(tf
) - 1);
1531 obstack_grow0 (&obstack
, asm_spec
, strlen (asm_spec
));
1532 asm_spec
= XOBFINISH (&obstack
, const char *);
1536 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \
1537 defined LINKER_HASH_STYLE
1538 # ifdef LINK_BUILDID_SPEC
1539 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1540 obstack_grow (&obstack
, LINK_BUILDID_SPEC
, sizeof(LINK_BUILDID_SPEC
) - 1);
1542 # ifdef LINK_EH_SPEC
1543 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1544 obstack_grow (&obstack
, LINK_EH_SPEC
, sizeof(LINK_EH_SPEC
) - 1);
1546 # ifdef LINKER_HASH_STYLE
1547 /* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had
1550 static const char hash_style
[] = "--hash-style=";
1551 obstack_grow (&obstack
, hash_style
, sizeof(hash_style
) - 1);
1552 obstack_grow (&obstack
, LINKER_HASH_STYLE
, sizeof(LINKER_HASH_STYLE
) - 1);
1553 obstack_1grow (&obstack
, ' ');
1556 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
1557 link_spec
= XOBFINISH (&obstack
, const char *);
1563 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1564 removed; If the spec starts with a + then SPEC is added to the end of the
1568 set_spec (const char *name
, const char *spec
, bool user_p
)
1570 struct spec_list
*sl
;
1571 const char *old_spec
;
1572 int name_len
= strlen (name
);
1575 /* If this is the first call, initialize the statically allocated specs. */
1578 struct spec_list
*next
= (struct spec_list
*) 0;
1579 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1581 sl
= &static_specs
[i
];
1588 /* See if the spec already exists. */
1589 for (sl
= specs
; sl
; sl
= sl
->next
)
1590 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, name
))
1595 /* Not found - make it. */
1596 sl
= XNEW (struct spec_list
);
1597 sl
->name
= xstrdup (name
);
1598 sl
->name_len
= name_len
;
1599 sl
->ptr_spec
= &sl
->ptr
;
1601 *(sl
->ptr_spec
) = "";
1606 old_spec
= *(sl
->ptr_spec
);
1607 *(sl
->ptr_spec
) = ((spec
[0] == '+' && ISSPACE ((unsigned char)spec
[1]))
1608 ? concat (old_spec
, spec
+ 1, NULL
)
1613 fnotice (stderr
, "Setting spec %s to '%s'\n\n", name
, *(sl
->ptr_spec
));
1616 /* Free the old spec. */
1617 if (old_spec
&& sl
->alloc_p
)
1618 free (CONST_CAST(char *, old_spec
));
1620 sl
->user_p
= user_p
;
1624 /* Accumulate a command (program name and args), and run it. */
1626 typedef const char *const_char_p
; /* For DEF_VEC_P. */
1628 /* Vector of pointers to arguments in the current line of specifications. */
1630 static vec
<const_char_p
> argbuf
;
1632 /* Position in the argbuf vector containing the name of the output file
1633 (the value associated with the "-o" flag). */
1635 static int have_o_argbuf_index
= 0;
1637 /* Were the options -c, -S or -E passed. */
1638 static int have_c
= 0;
1640 /* Was the option -o passed. */
1641 static int have_o
= 0;
1643 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1644 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1647 static struct temp_name
{
1648 const char *suffix
; /* suffix associated with the code. */
1649 int length
; /* strlen (suffix). */
1650 int unique
; /* Indicates whether %g or %u/%U was used. */
1651 const char *filename
; /* associated filename. */
1652 int filename_length
; /* strlen (filename). */
1653 struct temp_name
*next
;
1656 /* Number of commands executed so far. */
1658 static int execution_count
;
1660 /* Number of commands that exited with a signal. */
1662 static int signal_count
;
1664 /* Allocate the argument vector. */
1672 /* Clear out the vector of arguments (after a command is executed). */
1677 argbuf
.truncate (0);
1680 /* Add one argument to the vector at the end.
1681 This is done when a space is seen or at the end of the line.
1682 If DELETE_ALWAYS is nonzero, the arg is a filename
1683 and the file should be deleted eventually.
1684 If DELETE_FAILURE is nonzero, the arg is a filename
1685 and the file should be deleted if this compilation fails. */
1688 store_arg (const char *arg
, int delete_always
, int delete_failure
)
1690 argbuf
.safe_push (arg
);
1692 if (strcmp (arg
, "-o") == 0)
1693 have_o_argbuf_index
= argbuf
.length ();
1694 if (delete_always
|| delete_failure
)
1697 /* If the temporary file we should delete is specified as
1698 part of a joined argument extract the filename. */
1700 && (p
= strrchr (arg
, '=')))
1702 record_temp_file (arg
, delete_always
, delete_failure
);
1706 /* Load specs from a file name named FILENAME, replacing occurrences of
1707 various different types of line-endings, \r\n, \n\r and just \r, with
1711 load_specs (const char *filename
)
1715 struct stat statbuf
;
1722 fnotice (stderr
, "Reading specs from %s\n", filename
);
1724 /* Open and stat the file. */
1725 desc
= open (filename
, O_RDONLY
, 0);
1727 pfatal_with_name (filename
);
1728 if (stat (filename
, &statbuf
) < 0)
1729 pfatal_with_name (filename
);
1731 /* Read contents of file into BUFFER. */
1732 buffer
= XNEWVEC (char, statbuf
.st_size
+ 1);
1733 readlen
= read (desc
, buffer
, (unsigned) statbuf
.st_size
);
1735 pfatal_with_name (filename
);
1736 buffer
[readlen
] = 0;
1739 specs
= XNEWVEC (char, readlen
+ 1);
1741 for (buffer_p
= buffer
; buffer_p
&& *buffer_p
; buffer_p
++)
1747 if (buffer_p
> buffer
&& *(buffer_p
- 1) == '\n') /* \n\r */
1749 else if (*(buffer_p
+ 1) == '\n') /* \r\n */
1763 /* Read compilation specs from a file named FILENAME,
1764 replacing the default ones.
1766 A suffix which starts with `*' is a definition for
1767 one of the machine-specific sub-specs. The "suffix" should be
1768 *asm, *cc1, *cpp, *link, *startfile, etc.
1769 The corresponding spec is stored in asm_spec, etc.,
1770 rather than in the `compilers' vector.
1772 Anything invalid in the file is a fatal error. */
1775 read_specs (const char *filename
, bool main_p
, bool user_p
)
1780 buffer
= load_specs (filename
);
1782 /* Scan BUFFER for specs, putting them in the vector. */
1788 char *in
, *out
, *p1
, *p2
, *p3
;
1790 /* Advance P in BUFFER to the next nonblank nocomment line. */
1791 p
= skip_whitespace (p
);
1795 /* Is this a special command that starts with '%'? */
1796 /* Don't allow this for the main specs file, since it would
1797 encourage people to overwrite it. */
1798 if (*p
== '%' && !main_p
)
1801 while (*p
&& *p
!= '\n')
1807 if (!strncmp (p1
, "%include", sizeof ("%include") - 1)
1808 && (p1
[sizeof "%include" - 1] == ' '
1809 || p1
[sizeof "%include" - 1] == '\t'))
1813 p1
+= sizeof ("%include");
1814 while (*p1
== ' ' || *p1
== '\t')
1817 if (*p1
++ != '<' || p
[-2] != '>')
1818 fatal_error ("specs %%include syntax malformed after "
1820 (long) (p1
- buffer
+ 1));
1823 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1824 read_specs (new_filename
? new_filename
: p1
, false, user_p
);
1827 else if (!strncmp (p1
, "%include_noerr", sizeof "%include_noerr" - 1)
1828 && (p1
[sizeof "%include_noerr" - 1] == ' '
1829 || p1
[sizeof "%include_noerr" - 1] == '\t'))
1833 p1
+= sizeof "%include_noerr";
1834 while (*p1
== ' ' || *p1
== '\t')
1837 if (*p1
++ != '<' || p
[-2] != '>')
1838 fatal_error ("specs %%include syntax malformed after "
1840 (long) (p1
- buffer
+ 1));
1843 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1845 read_specs (new_filename
, false, user_p
);
1846 else if (verbose_flag
)
1847 fnotice (stderr
, "could not find specs file %s\n", p1
);
1850 else if (!strncmp (p1
, "%rename", sizeof "%rename" - 1)
1851 && (p1
[sizeof "%rename" - 1] == ' '
1852 || p1
[sizeof "%rename" - 1] == '\t'))
1855 struct spec_list
*sl
;
1856 struct spec_list
*newsl
;
1858 /* Get original name. */
1859 p1
+= sizeof "%rename";
1860 while (*p1
== ' ' || *p1
== '\t')
1863 if (! ISALPHA ((unsigned char) *p1
))
1864 fatal_error ("specs %%rename syntax malformed after "
1866 (long) (p1
- buffer
));
1869 while (*p2
&& !ISSPACE ((unsigned char) *p2
))
1872 if (*p2
!= ' ' && *p2
!= '\t')
1873 fatal_error ("specs %%rename syntax malformed after "
1875 (long) (p2
- buffer
));
1879 while (*p2
== ' ' || *p2
== '\t')
1882 if (! ISALPHA ((unsigned char) *p2
))
1883 fatal_error ("specs %%rename syntax malformed after "
1885 (long) (p2
- buffer
));
1887 /* Get new spec name. */
1889 while (*p3
&& !ISSPACE ((unsigned char) *p3
))
1893 fatal_error ("specs %%rename syntax malformed after "
1895 (long) (p3
- buffer
));
1898 for (sl
= specs
; sl
; sl
= sl
->next
)
1899 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, p1
))
1903 fatal_error ("specs %s spec was not found to be renamed", p1
);
1905 if (strcmp (p1
, p2
) == 0)
1908 for (newsl
= specs
; newsl
; newsl
= newsl
->next
)
1909 if (strcmp (newsl
->name
, p2
) == 0)
1910 fatal_error ("%s: attempt to rename spec %qs to "
1911 "already defined spec %qs",
1916 fnotice (stderr
, "rename spec %s to %s\n", p1
, p2
);
1918 fnotice (stderr
, "spec is '%s'\n\n", *(sl
->ptr_spec
));
1922 set_spec (p2
, *(sl
->ptr_spec
), user_p
);
1924 free (CONST_CAST (char *, *(sl
->ptr_spec
)));
1926 *(sl
->ptr_spec
) = "";
1931 fatal_error ("specs unknown %% command after %ld characters",
1932 (long) (p1
- buffer
));
1935 /* Find the colon that should end the suffix. */
1937 while (*p1
&& *p1
!= ':' && *p1
!= '\n')
1940 /* The colon shouldn't be missing. */
1942 fatal_error ("specs file malformed after %ld characters",
1943 (long) (p1
- buffer
));
1945 /* Skip back over trailing whitespace. */
1947 while (p2
> buffer
&& (p2
[-1] == ' ' || p2
[-1] == '\t'))
1950 /* Copy the suffix to a string. */
1951 suffix
= save_string (p
, p2
- p
);
1952 /* Find the next line. */
1953 p
= skip_whitespace (p1
+ 1);
1955 fatal_error ("specs file malformed after %ld characters",
1956 (long) (p
- buffer
));
1959 /* Find next blank line or end of string. */
1960 while (*p1
&& !(*p1
== '\n' && (p1
[1] == '\n' || p1
[1] == '\0')))
1963 /* Specs end at the blank line and do not include the newline. */
1964 spec
= save_string (p
, p1
- p
);
1967 /* Delete backslash-newline sequences from the spec. */
1972 if (in
[0] == '\\' && in
[1] == '\n')
1974 else if (in
[0] == '#')
1975 while (*in
&& *in
!= '\n')
1983 if (suffix
[0] == '*')
1985 if (! strcmp (suffix
, "*link_command"))
1986 link_command_spec
= spec
;
1988 set_spec (suffix
+ 1, spec
, user_p
);
1992 /* Add this pair to the vector. */
1994 = XRESIZEVEC (struct compiler
, compilers
, n_compilers
+ 2);
1996 compilers
[n_compilers
].suffix
= suffix
;
1997 compilers
[n_compilers
].spec
= spec
;
1999 memset (&compilers
[n_compilers
], 0, sizeof compilers
[n_compilers
]);
2003 link_command_spec
= spec
;
2006 if (link_command_spec
== 0)
2007 fatal_error ("spec file has no spec for linking");
2010 /* Record the names of temporary files we tell compilers to write,
2011 and delete them at the end of the run. */
2013 /* This is the common prefix we use to make temp file names.
2014 It is chosen once for each run of this program.
2015 It is substituted into a spec by %g or %j.
2016 Thus, all temp file names contain this prefix.
2017 In practice, all temp file names start with this prefix.
2019 This prefix comes from the envvar TMPDIR if it is defined;
2020 otherwise, from the P_tmpdir macro if that is defined;
2021 otherwise, in /usr/tmp or /tmp;
2022 or finally the current directory if all else fails. */
2024 static const char *temp_filename
;
2026 /* Length of the prefix. */
2028 static int temp_filename_length
;
2030 /* Define the list of temporary files to delete. */
2035 struct temp_file
*next
;
2038 /* Queue of files to delete on success or failure of compilation. */
2039 static struct temp_file
*always_delete_queue
;
2040 /* Queue of files to delete on failure of compilation. */
2041 static struct temp_file
*failure_delete_queue
;
2043 /* Record FILENAME as a file to be deleted automatically.
2044 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2045 otherwise delete it in any case.
2046 FAIL_DELETE nonzero means delete it if a compilation step fails;
2047 otherwise delete it in any case. */
2050 record_temp_file (const char *filename
, int always_delete
, int fail_delete
)
2052 char *const name
= xstrdup (filename
);
2056 struct temp_file
*temp
;
2057 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
2058 if (! filename_cmp (name
, temp
->name
))
2061 temp
= XNEW (struct temp_file
);
2062 temp
->next
= always_delete_queue
;
2064 always_delete_queue
= temp
;
2071 struct temp_file
*temp
;
2072 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
2073 if (! filename_cmp (name
, temp
->name
))
2079 temp
= XNEW (struct temp_file
);
2080 temp
->next
= failure_delete_queue
;
2082 failure_delete_queue
= temp
;
2088 /* Delete all the temporary files whose names we previously recorded. */
2090 #ifndef DELETE_IF_ORDINARY
2091 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2094 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2095 if (unlink (NAME) < 0) \
2097 perror_with_name (NAME); \
2102 delete_if_ordinary (const char *name
)
2108 printf ("Delete %s? (y or n) ", name
);
2112 while ((c
= getchar ()) != '\n' && c
!= EOF
)
2115 if (i
== 'y' || i
== 'Y')
2117 DELETE_IF_ORDINARY (name
, st
, verbose_flag
);
2121 delete_temp_files (void)
2123 struct temp_file
*temp
;
2125 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
2126 delete_if_ordinary (temp
->name
);
2127 always_delete_queue
= 0;
2130 /* Delete all the files to be deleted on error. */
2133 delete_failure_queue (void)
2135 struct temp_file
*temp
;
2137 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
2138 delete_if_ordinary (temp
->name
);
2142 clear_failure_queue (void)
2144 failure_delete_queue
= 0;
2147 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2149 If DO_MULTI is true iterate over the paths twice, first with multilib
2150 suffix then without, otherwise iterate over the paths once without
2151 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2152 to avoid visiting the same path twice, but we could do better. For
2153 instance, /usr/lib/../lib is considered different from /usr/lib.
2154 At least EXTRA_SPACE chars past the end of the path passed to
2155 CALLBACK are available for use by the callback.
2156 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2158 Returns the value returned by CALLBACK. */
2161 for_each_path (const struct path_prefix
*paths
,
2164 void *(*callback
) (char *, void *),
2165 void *callback_info
)
2167 struct prefix_list
*pl
;
2168 const char *multi_dir
= NULL
;
2169 const char *multi_os_dir
= NULL
;
2170 const char *multiarch_suffix
= NULL
;
2171 const char *multi_suffix
;
2172 const char *just_multi_suffix
;
2175 bool skip_multi_dir
= false;
2176 bool skip_multi_os_dir
= false;
2178 multi_suffix
= machine_suffix
;
2179 just_multi_suffix
= just_machine_suffix
;
2180 if (do_multi
&& multilib_dir
&& strcmp (multilib_dir
, ".") != 0)
2182 multi_dir
= concat (multilib_dir
, dir_separator_str
, NULL
);
2183 multi_suffix
= concat (multi_suffix
, multi_dir
, NULL
);
2184 just_multi_suffix
= concat (just_multi_suffix
, multi_dir
, NULL
);
2186 if (do_multi
&& multilib_os_dir
&& strcmp (multilib_os_dir
, ".") != 0)
2187 multi_os_dir
= concat (multilib_os_dir
, dir_separator_str
, NULL
);
2189 multiarch_suffix
= concat (multiarch_dir
, dir_separator_str
, NULL
);
2193 size_t multi_dir_len
= 0;
2194 size_t multi_os_dir_len
= 0;
2195 size_t multiarch_len
= 0;
2197 size_t just_suffix_len
;
2201 multi_dir_len
= strlen (multi_dir
);
2203 multi_os_dir_len
= strlen (multi_os_dir
);
2204 if (multiarch_suffix
)
2205 multiarch_len
= strlen (multiarch_suffix
);
2206 suffix_len
= strlen (multi_suffix
);
2207 just_suffix_len
= strlen (just_multi_suffix
);
2211 len
= paths
->max_len
+ extra_space
+ 1;
2212 len
+= MAX (MAX (suffix_len
, multi_os_dir_len
), multiarch_len
);
2213 path
= XNEWVEC (char, len
);
2216 for (pl
= paths
->plist
; pl
!= 0; pl
= pl
->next
)
2218 len
= strlen (pl
->prefix
);
2219 memcpy (path
, pl
->prefix
, len
);
2221 /* Look first in MACHINE/VERSION subdirectory. */
2222 if (!skip_multi_dir
)
2224 memcpy (path
+ len
, multi_suffix
, suffix_len
+ 1);
2225 ret
= callback (path
, callback_info
);
2230 /* Some paths are tried with just the machine (ie. target)
2231 subdir. This is used for finding as, ld, etc. */
2233 && pl
->require_machine_suffix
== 2)
2235 memcpy (path
+ len
, just_multi_suffix
, just_suffix_len
+ 1);
2236 ret
= callback (path
, callback_info
);
2241 /* Now try the multiarch path. */
2243 && !pl
->require_machine_suffix
&& multiarch_dir
)
2245 memcpy (path
+ len
, multiarch_suffix
, multiarch_len
+ 1);
2246 ret
= callback (path
, callback_info
);
2251 /* Now try the base path. */
2252 if (!pl
->require_machine_suffix
2253 && !(pl
->os_multilib
? skip_multi_os_dir
: skip_multi_dir
))
2255 const char *this_multi
;
2256 size_t this_multi_len
;
2258 if (pl
->os_multilib
)
2260 this_multi
= multi_os_dir
;
2261 this_multi_len
= multi_os_dir_len
;
2265 this_multi
= multi_dir
;
2266 this_multi_len
= multi_dir_len
;
2270 memcpy (path
+ len
, this_multi
, this_multi_len
+ 1);
2274 ret
= callback (path
, callback_info
);
2282 if (multi_dir
== NULL
&& multi_os_dir
== NULL
)
2285 /* Run through the paths again, this time without multilibs.
2286 Don't repeat any we have already seen. */
2289 free (CONST_CAST (char *, multi_dir
));
2291 free (CONST_CAST (char *, multi_suffix
));
2292 multi_suffix
= machine_suffix
;
2293 free (CONST_CAST (char *, just_multi_suffix
));
2294 just_multi_suffix
= just_machine_suffix
;
2297 skip_multi_dir
= true;
2300 free (CONST_CAST (char *, multi_os_dir
));
2301 multi_os_dir
= NULL
;
2304 skip_multi_os_dir
= true;
2309 free (CONST_CAST (char *, multi_dir
));
2310 free (CONST_CAST (char *, multi_suffix
));
2311 free (CONST_CAST (char *, just_multi_suffix
));
2314 free (CONST_CAST (char *, multi_os_dir
));
2320 /* Callback for build_search_list. Adds path to obstack being built. */
2322 struct add_to_obstack_info
{
2329 add_to_obstack (char *path
, void *data
)
2331 struct add_to_obstack_info
*info
= (struct add_to_obstack_info
*) data
;
2333 if (info
->check_dir
&& !is_directory (path
, false))
2336 if (!info
->first_time
)
2337 obstack_1grow (info
->ob
, PATH_SEPARATOR
);
2339 obstack_grow (info
->ob
, path
, strlen (path
));
2341 info
->first_time
= false;
2345 /* Add or change the value of an environment variable, outputting the
2346 change to standard error if in verbose mode. */
2348 xputenv (const char *string
)
2351 fnotice (stderr
, "%s\n", string
);
2352 putenv (CONST_CAST (char *, string
));
2355 /* Build a list of search directories from PATHS.
2356 PREFIX is a string to prepend to the list.
2357 If CHECK_DIR_P is true we ensure the directory exists.
2358 If DO_MULTI is true, multilib paths are output first, then
2360 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2361 It is also used by the --print-search-dirs flag. */
2364 build_search_list (const struct path_prefix
*paths
, const char *prefix
,
2365 bool check_dir
, bool do_multi
)
2367 struct add_to_obstack_info info
;
2369 info
.ob
= &collect_obstack
;
2370 info
.check_dir
= check_dir
;
2371 info
.first_time
= true;
2373 obstack_grow (&collect_obstack
, prefix
, strlen (prefix
));
2374 obstack_1grow (&collect_obstack
, '=');
2376 for_each_path (paths
, do_multi
, 0, add_to_obstack
, &info
);
2378 obstack_1grow (&collect_obstack
, '\0');
2379 return XOBFINISH (&collect_obstack
, char *);
2382 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2386 putenv_from_prefixes (const struct path_prefix
*paths
, const char *env_var
,
2389 xputenv (build_search_list (paths
, env_var
, true, do_multi
));
2392 /* Check whether NAME can be accessed in MODE. This is like access,
2393 except that it never considers directories to be executable. */
2396 access_check (const char *name
, int mode
)
2402 if (stat (name
, &st
) < 0
2403 || S_ISDIR (st
.st_mode
))
2407 return access (name
, mode
);
2410 /* Callback for find_a_file. Appends the file name to the directory
2411 path. If the resulting file exists in the right mode, return the
2412 full pathname to the file. */
2414 struct file_at_path_info
{
2423 file_at_path (char *path
, void *data
)
2425 struct file_at_path_info
*info
= (struct file_at_path_info
*) data
;
2426 size_t len
= strlen (path
);
2428 memcpy (path
+ len
, info
->name
, info
->name_len
);
2429 len
+= info
->name_len
;
2431 /* Some systems have a suffix for executable files.
2432 So try appending that first. */
2433 if (info
->suffix_len
)
2435 memcpy (path
+ len
, info
->suffix
, info
->suffix_len
+ 1);
2436 if (access_check (path
, info
->mode
) == 0)
2441 if (access_check (path
, info
->mode
) == 0)
2447 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2448 access to check permissions. If DO_MULTI is true, search multilib
2449 paths then non-multilib paths, otherwise do not search multilib paths.
2450 Return 0 if not found, otherwise return its name, allocated with malloc. */
2453 find_a_file (const struct path_prefix
*pprefix
, const char *name
, int mode
,
2456 struct file_at_path_info info
;
2458 #ifdef DEFAULT_ASSEMBLER
2459 if (! strcmp (name
, "as") && access (DEFAULT_ASSEMBLER
, mode
) == 0)
2460 return xstrdup (DEFAULT_ASSEMBLER
);
2463 #ifdef DEFAULT_LINKER
2464 if (! strcmp(name
, "ld") && access (DEFAULT_LINKER
, mode
) == 0)
2465 return xstrdup (DEFAULT_LINKER
);
2468 /* Determine the filename to execute (special case for absolute paths). */
2470 if (IS_ABSOLUTE_PATH (name
))
2472 if (access (name
, mode
) == 0)
2473 return xstrdup (name
);
2479 info
.suffix
= (mode
& X_OK
) != 0 ? HOST_EXECUTABLE_SUFFIX
: "";
2480 info
.name_len
= strlen (info
.name
);
2481 info
.suffix_len
= strlen (info
.suffix
);
2484 return (char*) for_each_path (pprefix
, do_multi
,
2485 info
.name_len
+ info
.suffix_len
,
2486 file_at_path
, &info
);
2489 /* Ranking of prefixes in the sort list. -B prefixes are put before
2492 enum path_prefix_priority
2494 PREFIX_PRIORITY_B_OPT
,
2495 PREFIX_PRIORITY_LAST
2498 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2499 order according to PRIORITY. Within each PRIORITY, new entries are
2502 If WARN is nonzero, we will warn if no file is found
2503 through this prefix. WARN should point to an int
2504 which will be set to 1 if this entry is used.
2506 COMPONENT is the value to be passed to update_path.
2508 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2509 the complete value of machine_suffix.
2510 2 means try both machine_suffix and just_machine_suffix. */
2513 add_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2514 const char *component
, /* enum prefix_priority */ int priority
,
2515 int require_machine_suffix
, int os_multilib
)
2517 struct prefix_list
*pl
, **prev
;
2520 for (prev
= &pprefix
->plist
;
2521 (*prev
) != NULL
&& (*prev
)->priority
<= priority
;
2522 prev
= &(*prev
)->next
)
2525 /* Keep track of the longest prefix. */
2527 prefix
= update_path (prefix
, component
);
2528 len
= strlen (prefix
);
2529 if (len
> pprefix
->max_len
)
2530 pprefix
->max_len
= len
;
2532 pl
= XNEW (struct prefix_list
);
2533 pl
->prefix
= prefix
;
2534 pl
->require_machine_suffix
= require_machine_suffix
;
2535 pl
->priority
= priority
;
2536 pl
->os_multilib
= os_multilib
;
2538 /* Insert after PREV. */
2543 /* Same as add_prefix, but prepending target_system_root to prefix. */
2544 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2546 add_sysrooted_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2547 const char *component
,
2548 /* enum prefix_priority */ int priority
,
2549 int require_machine_suffix
, int os_multilib
)
2551 if (!IS_ABSOLUTE_PATH (prefix
))
2552 fatal_error ("system path %qs is not absolute", prefix
);
2554 if (target_system_root
)
2556 char *sysroot_no_trailing_dir_separator
= xstrdup (target_system_root
);
2557 size_t sysroot_len
= strlen (target_system_root
);
2560 && target_system_root
[sysroot_len
- 1] == DIR_SEPARATOR
)
2561 sysroot_no_trailing_dir_separator
[sysroot_len
- 1] = '\0';
2563 if (target_sysroot_suffix
)
2564 prefix
= concat (sysroot_no_trailing_dir_separator
,
2565 target_sysroot_suffix
, prefix
, NULL
);
2567 prefix
= concat (sysroot_no_trailing_dir_separator
, prefix
, NULL
);
2569 free (sysroot_no_trailing_dir_separator
);
2571 /* We have to override this because GCC's notion of sysroot
2572 moves along with GCC. */
2576 add_prefix (pprefix
, prefix
, component
, priority
,
2577 require_machine_suffix
, os_multilib
);
2580 /* Execute the command specified by the arguments on the current line of spec.
2581 When using pipes, this includes several piped-together commands
2582 with `|' between them.
2584 Return 0 if successful, -1 if failed. */
2590 int n_commands
; /* # of command. */
2592 struct pex_obj
*pex
;
2595 const char *prog
; /* program name. */
2596 const char **argv
; /* vector of args. */
2600 struct command
*commands
; /* each command buffer with above info. */
2602 gcc_assert (!processing_spec_function
);
2606 string
= find_a_file (&exec_prefixes
,
2607 argbuf
[0], X_OK
, false);
2610 insert_wrapper (wrapper_string
);
2613 /* Count # of piped commands. */
2614 for (n_commands
= 1, i
= 0; argbuf
.iterate (i
, &arg
); i
++)
2615 if (strcmp (arg
, "|") == 0)
2618 /* Get storage for each command. */
2619 commands
= (struct command
*) alloca (n_commands
* sizeof (struct command
));
2621 /* Split argbuf into its separate piped processes,
2622 and record info about each one.
2623 Also search for the programs that are to be run. */
2625 argbuf
.safe_push (0);
2627 commands
[0].prog
= argbuf
[0]; /* first command. */
2628 commands
[0].argv
= argbuf
.address ();
2630 if (!wrapper_string
)
2632 string
= find_a_file (&exec_prefixes
, commands
[0].prog
, X_OK
, false);
2633 commands
[0].argv
[0] = (string
) ? string
: commands
[0].argv
[0];
2636 for (n_commands
= 1, i
= 0; argbuf
.iterate (i
, &arg
); i
++)
2637 if (arg
&& strcmp (arg
, "|") == 0)
2638 { /* each command. */
2639 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2640 fatal_error ("-pipe not supported");
2642 argbuf
[i
] = 0; /* Termination of
2644 commands
[n_commands
].prog
= argbuf
[i
+ 1];
2645 commands
[n_commands
].argv
2646 = &(argbuf
.address ())[i
+ 1];
2647 string
= find_a_file (&exec_prefixes
, commands
[n_commands
].prog
,
2650 commands
[n_commands
].argv
[0] = string
;
2654 /* If -v, print what we are about to do, and maybe query. */
2658 /* For help listings, put a blank line between sub-processes. */
2659 if (print_help_list
)
2660 fputc ('\n', stderr
);
2662 /* Print each piped command as a separate line. */
2663 for (i
= 0; i
< n_commands
; i
++)
2665 const char *const *j
;
2667 if (verbose_only_flag
)
2669 for (j
= commands
[i
].argv
; *j
; j
++)
2672 for (p
= *j
; *p
; ++p
)
2673 if (!ISALNUM ((unsigned char) *p
)
2674 && *p
!= '_' && *p
!= '/' && *p
!= '-' && *p
!= '.')
2678 fprintf (stderr
, " \"");
2679 for (p
= *j
; *p
; ++p
)
2681 if (*p
== '"' || *p
== '\\' || *p
== '$')
2682 fputc ('\\', stderr
);
2685 fputc ('"', stderr
);
2687 /* If it's empty, print "". */
2689 fprintf (stderr
, " \"\"");
2691 fprintf (stderr
, " %s", *j
);
2695 for (j
= commands
[i
].argv
; *j
; j
++)
2696 /* If it's empty, print "". */
2698 fprintf (stderr
, " \"\"");
2700 fprintf (stderr
, " %s", *j
);
2702 /* Print a pipe symbol after all but the last command. */
2703 if (i
+ 1 != n_commands
)
2704 fprintf (stderr
, " |");
2705 fprintf (stderr
, "\n");
2708 if (verbose_only_flag
!= 0)
2710 /* verbose_only_flag should act as if the spec was
2711 executed, so increment execution_count before
2712 returning. This prevents spurious warnings about
2713 unused linker input files, etc. */
2718 fnotice (stderr
, "\nGo ahead? (y or n) ");
2722 while (getchar () != '\n')
2725 if (i
!= 'y' && i
!= 'Y')
2730 #ifdef ENABLE_VALGRIND_CHECKING
2731 /* Run the each command through valgrind. To simplify prepending the
2732 path to valgrind and the option "-q" (for quiet operation unless
2733 something triggers), we allocate a separate argv array. */
2735 for (i
= 0; i
< n_commands
; i
++)
2741 for (argc
= 0; commands
[i
].argv
[argc
] != NULL
; argc
++)
2744 argv
= XALLOCAVEC (const char *, argc
+ 3);
2746 argv
[0] = VALGRIND_PATH
;
2748 for (j
= 2; j
< argc
+ 2; j
++)
2749 argv
[j
] = commands
[i
].argv
[j
- 2];
2752 commands
[i
].argv
= argv
;
2753 commands
[i
].prog
= argv
[0];
2757 /* Run each piped subprocess. */
2759 pex
= pex_init (PEX_USE_PIPES
| ((report_times
|| report_times_to_file
)
2760 ? PEX_RECORD_TIMES
: 0),
2761 progname
, temp_filename
);
2763 fatal_error ("pex_init failed: %m");
2765 for (i
= 0; i
< n_commands
; i
++)
2769 const char *string
= commands
[i
].argv
[0];
2771 errmsg
= pex_run (pex
,
2772 ((i
+ 1 == n_commands
? PEX_LAST
: 0)
2773 | (string
== commands
[i
].prog
? PEX_SEARCH
: 0)),
2774 string
, CONST_CAST (char **, commands
[i
].argv
),
2779 fatal_error (errmsg
);
2783 pfatal_with_name (errmsg
);
2787 if (string
!= commands
[i
].prog
)
2788 free (CONST_CAST (char *, string
));
2793 /* Wait for all the subprocesses to finish. */
2797 struct pex_time
*times
= NULL
;
2800 statuses
= (int *) alloca (n_commands
* sizeof (int));
2801 if (!pex_get_status (pex
, n_commands
, statuses
))
2802 fatal_error ("failed to get exit status: %m");
2804 if (report_times
|| report_times_to_file
)
2806 times
= (struct pex_time
*) alloca (n_commands
* sizeof (struct pex_time
));
2807 if (!pex_get_times (pex
, n_commands
, times
))
2808 fatal_error ("failed to get process times: %m");
2813 for (i
= 0; i
< n_commands
; ++i
)
2815 int status
= statuses
[i
];
2817 if (WIFSIGNALED (status
))
2820 /* SIGPIPE is a special case. It happens in -pipe mode
2821 when the compiler dies before the preprocessor is done,
2822 or the assembler dies before the compiler is done.
2823 There's generally been an error already, and this is
2824 just fallout. So don't generate another error unless
2825 we would otherwise have succeeded. */
2826 if (WTERMSIG (status
) == SIGPIPE
2827 && (signal_count
|| greatest_status
>= MIN_FATAL_STATUS
))
2834 internal_error ("%s (program %s)",
2835 strsignal (WTERMSIG (status
)), commands
[i
].prog
);
2837 else if (WIFEXITED (status
)
2838 && WEXITSTATUS (status
) >= MIN_FATAL_STATUS
)
2840 if (WEXITSTATUS (status
) > greatest_status
)
2841 greatest_status
= WEXITSTATUS (status
);
2845 if (report_times
|| report_times_to_file
)
2847 struct pex_time
*pt
= ×
[i
];
2850 ut
= ((double) pt
->user_seconds
2851 + (double) pt
->user_microseconds
/ 1.0e6
);
2852 st
= ((double) pt
->system_seconds
2853 + (double) pt
->system_microseconds
/ 1.0e6
);
2858 fnotice (stderr
, "# %s %.2f %.2f\n",
2859 commands
[i
].prog
, ut
, st
);
2861 if (report_times_to_file
)
2864 const char *const *j
;
2866 fprintf (report_times_to_file
, "%g %g", ut
, st
);
2868 for (j
= &commands
[i
].prog
; *j
; j
= &commands
[i
].argv
[++c
])
2871 for (p
= *j
; *p
; ++p
)
2872 if (*p
== '"' || *p
== '\\' || *p
== '$'
2878 fprintf (report_times_to_file
, " \"");
2879 for (p
= *j
; *p
; ++p
)
2881 if (*p
== '"' || *p
== '\\' || *p
== '$')
2882 fputc ('\\', report_times_to_file
);
2883 fputc (*p
, report_times_to_file
);
2885 fputc ('"', report_times_to_file
);
2888 fprintf (report_times_to_file
, " %s", *j
);
2891 fputc ('\n', report_times_to_file
);
2901 /* Find all the switches given to us
2902 and make a vector describing them.
2903 The elements of the vector are strings, one per switch given.
2904 If a switch uses following arguments, then the `part1' field
2905 is the switch itself and the `args' field
2906 is a null-terminated vector containing the following arguments.
2907 Bits in the `live_cond' field are:
2908 SWITCH_LIVE to indicate this switch is true in a conditional spec.
2909 SWITCH_FALSE to indicate this switch is overridden by a later switch.
2910 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
2911 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
2912 in all do_spec calls afterwards. Used for %<S from self specs.
2913 The `validated' field is nonzero if any spec has looked at this switch;
2914 if it remains zero at the end of the run, it must be meaningless. */
2916 #define SWITCH_LIVE (1 << 0)
2917 #define SWITCH_FALSE (1 << 1)
2918 #define SWITCH_IGNORE (1 << 2)
2919 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
2920 #define SWITCH_KEEP_FOR_GCC (1 << 4)
2926 unsigned int live_cond
;
2932 static struct switchstr
*switches
;
2934 static int n_switches
;
2936 static int n_switches_alloc
;
2938 /* Set to zero if -fcompare-debug is disabled, positive if it's
2939 enabled and we're running the first compilation, negative if it's
2940 enabled and we're running the second compilation. For most of the
2941 time, it's in the range -1..1, but it can be temporarily set to 2
2942 or 3 to indicate that the -fcompare-debug flags didn't come from
2943 the command-line, but rather from the GCC_COMPARE_DEBUG environment
2944 variable, until a synthesized -fcompare-debug flag is added to the
2948 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
2949 int compare_debug_second
;
2951 /* Set to the flags that should be passed to the second compilation in
2952 a -fcompare-debug compilation. */
2953 const char *compare_debug_opt
;
2955 static struct switchstr
*switches_debug_check
[2];
2957 static int n_switches_debug_check
[2];
2959 static int n_switches_alloc_debug_check
[2];
2961 static char *debug_check_temp_file
[2];
2963 /* Language is one of three things:
2965 1) The name of a real programming language.
2966 2) NULL, indicating that no one has figured out
2968 3) '*', indicating that the file should be passed
2973 const char *language
;
2974 struct compiler
*incompiler
;
2979 /* Also a vector of input files specified. */
2981 static struct infile
*infiles
;
2985 static int n_infiles_alloc
;
2987 /* True if multiple input files are being compiled to a single
2990 static bool combine_inputs
;
2992 /* This counts the number of libraries added by lang_specific_driver, so that
2993 we can tell if there were any user supplied any files or libraries. */
2995 static int added_libraries
;
2997 /* And a vector of corresponding output files is made up later. */
2999 const char **outfiles
;
3001 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3003 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
3004 is true if we should look for an executable suffix. DO_OBJ
3005 is true if we should look for an object suffix. */
3008 convert_filename (const char *name
, int do_exe ATTRIBUTE_UNUSED
,
3009 int do_obj ATTRIBUTE_UNUSED
)
3011 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3019 len
= strlen (name
);
3021 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3022 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
3023 if (do_obj
&& len
> 2
3024 && name
[len
- 2] == '.'
3025 && name
[len
- 1] == 'o')
3027 obstack_grow (&obstack
, name
, len
- 2);
3028 obstack_grow0 (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
3029 name
= XOBFINISH (&obstack
, const char *);
3033 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3034 /* If there is no filetype, make it the executable suffix (which includes
3035 the "."). But don't get confused if we have just "-o". */
3036 if (! do_exe
|| TARGET_EXECUTABLE_SUFFIX
[0] == 0 || (len
== 2 && name
[0] == '-'))
3039 for (i
= len
- 1; i
>= 0; i
--)
3040 if (IS_DIR_SEPARATOR (name
[i
]))
3043 for (i
++; i
< len
; i
++)
3047 obstack_grow (&obstack
, name
, len
);
3048 obstack_grow0 (&obstack
, TARGET_EXECUTABLE_SUFFIX
,
3049 strlen (TARGET_EXECUTABLE_SUFFIX
));
3050 name
= XOBFINISH (&obstack
, const char *);
3057 /* Display the command line switches accepted by gcc. */
3061 printf (_("Usage: %s [options] file...\n"), progname
);
3062 fputs (_("Options:\n"), stdout
);
3064 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout
);
3065 fputs (_(" --help Display this information\n"), stdout
);
3066 fputs (_(" --target-help Display target specific command line options\n"), stdout
);
3067 fputs (_(" --help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumented}}[,...]\n"), stdout
);
3068 fputs (_(" Display specific types of command line options\n"), stdout
);
3070 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout
);
3071 fputs (_(" --version Display compiler version information\n"), stdout
);
3072 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout
);
3073 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout
);
3074 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout
);
3075 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout
);
3076 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout
);
3077 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout
);
3078 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout
);
3080 -print-multiarch Display the target's normalized GNU triplet, used as\n\
3081 a component in the library path\n"), stdout
);
3082 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout
);
3084 -print-multi-lib Display the mapping between command line options and\n\
3085 multiple library search directories\n"), stdout
);
3086 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout
);
3087 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout
);
3088 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout
);
3089 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout
);
3090 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout
);
3091 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout
);
3092 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout
);
3093 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout
);
3094 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout
);
3095 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout
);
3096 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout
);
3098 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
3099 prefixes to other gcc components\n"), stdout
);
3100 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout
);
3101 fputs (_(" -time Time the execution of each subprocess\n"), stdout
);
3102 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout
);
3103 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout
);
3105 --sysroot=<directory> Use <directory> as the root directory for headers\n\
3106 and libraries\n"), stdout
);
3107 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout
);
3108 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout
);
3109 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout
);
3110 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout
);
3111 fputs (_(" -S Compile only; do not assemble or link\n"), stdout
);
3112 fputs (_(" -c Compile and assemble, but do not link\n"), stdout
);
3113 fputs (_(" -o <file> Place the output into <file>\n"), stdout
);
3114 fputs (_(" -pie Create a position independent executable\n"), stdout
);
3115 fputs (_(" -shared Create a shared library\n"), stdout
);
3117 -x <language> Specify the language of the following input files\n\
3118 Permissible languages include: c c++ assembler none\n\
3119 'none' means revert to the default behavior of\n\
3120 guessing the language based on the file's extension\n\
3124 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3125 passed on to the various sub-processes invoked by %s. In order to pass\n\
3126 other options on to these processes the -W<letter> options must be used.\n\
3129 /* The rest of the options are displayed by invocations of the various
3134 add_preprocessor_option (const char *option
, int len
)
3136 preprocessor_options
.safe_push (save_string (option
, len
));
3140 add_assembler_option (const char *option
, int len
)
3142 assembler_options
.safe_push (save_string (option
, len
));
3146 add_linker_option (const char *option
, int len
)
3148 linker_options
.safe_push (save_string (option
, len
));
3151 /* Allocate space for an input file in infiles. */
3156 if (n_infiles_alloc
== 0)
3158 n_infiles_alloc
= 16;
3159 infiles
= XNEWVEC (struct infile
, n_infiles_alloc
);
3161 else if (n_infiles_alloc
== n_infiles
)
3163 n_infiles_alloc
*= 2;
3164 infiles
= XRESIZEVEC (struct infile
, infiles
, n_infiles_alloc
);
3168 /* Store an input file with the given NAME and LANGUAGE in
3172 add_infile (const char *name
, const char *language
)
3175 infiles
[n_infiles
].name
= name
;
3176 infiles
[n_infiles
++].language
= language
;
3179 /* Allocate space for a switch in switches. */
3184 if (n_switches_alloc
== 0)
3186 n_switches_alloc
= 16;
3187 switches
= XNEWVEC (struct switchstr
, n_switches_alloc
);
3189 else if (n_switches_alloc
== n_switches
)
3191 n_switches_alloc
*= 2;
3192 switches
= XRESIZEVEC (struct switchstr
, switches
, n_switches_alloc
);
3196 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3197 as validated if VALIDATED and KNOWN if it is an internal switch. */
3200 save_switch (const char *opt
, size_t n_args
, const char *const *args
,
3201 bool validated
, bool known
)
3204 switches
[n_switches
].part1
= opt
+ 1;
3206 switches
[n_switches
].args
= 0;
3209 switches
[n_switches
].args
= XNEWVEC (const char *, n_args
+ 1);
3210 memcpy (switches
[n_switches
].args
, args
, n_args
* sizeof (const char *));
3211 switches
[n_switches
].args
[n_args
] = NULL
;
3214 switches
[n_switches
].live_cond
= 0;
3215 switches
[n_switches
].validated
= validated
;
3216 switches
[n_switches
].known
= known
;
3217 switches
[n_switches
].ordering
= 0;
3221 /* Handle an option DECODED that is unknown to the option-processing
3225 driver_unknown_option_callback (const struct cl_decoded_option
*decoded
)
3227 const char *opt
= decoded
->arg
;
3228 if (opt
[1] == 'W' && opt
[2] == 'n' && opt
[3] == 'o' && opt
[4] == '-'
3229 && !(decoded
->errors
& CL_ERR_NEGATIVE
))
3231 /* Leave unknown -Wno-* options for the compiler proper, to be
3232 diagnosed only if there are warnings. */
3233 save_switch (decoded
->canonical_option
[0],
3234 decoded
->canonical_option_num_elements
- 1,
3235 &decoded
->canonical_option
[1], false, true);
3238 if (decoded
->opt_index
== OPT_SPECIAL_unknown
)
3240 /* Give it a chance to define it a a spec file. */
3241 save_switch (decoded
->canonical_option
[0],
3242 decoded
->canonical_option_num_elements
- 1,
3243 &decoded
->canonical_option
[1], false, false);
3250 /* Handle an option DECODED that is not marked as CL_DRIVER.
3251 LANG_MASK will always be CL_DRIVER. */
3254 driver_wrong_lang_callback (const struct cl_decoded_option
*decoded
,
3255 unsigned int lang_mask ATTRIBUTE_UNUSED
)
3257 /* At this point, non-driver options are accepted (and expected to
3258 be passed down by specs) unless marked to be rejected by the
3259 driver. Options to be rejected by the driver but accepted by the
3260 compilers proper are treated just like completely unknown
3262 const struct cl_option
*option
= &cl_options
[decoded
->opt_index
];
3264 if (option
->cl_reject_driver
)
3265 error ("unrecognized command line option %qs",
3266 decoded
->orig_option_with_args_text
);
3268 save_switch (decoded
->canonical_option
[0],
3269 decoded
->canonical_option_num_elements
- 1,
3270 &decoded
->canonical_option
[1], false, true);
3273 static const char *spec_lang
= 0;
3274 static int last_language_n_infiles
;
3276 /* Handle a driver option; arguments and return value as for
3280 driver_handle_option (struct gcc_options
*opts
,
3281 struct gcc_options
*opts_set
,
3282 const struct cl_decoded_option
*decoded
,
3283 unsigned int lang_mask ATTRIBUTE_UNUSED
, int kind
,
3285 const struct cl_option_handlers
*handlers ATTRIBUTE_UNUSED
,
3286 diagnostic_context
*dc
)
3288 size_t opt_index
= decoded
->opt_index
;
3289 const char *arg
= decoded
->arg
;
3290 const char *compare_debug_replacement_opt
;
3291 int value
= decoded
->value
;
3292 bool validated
= false;
3293 bool do_save
= true;
3295 gcc_assert (opts
== &global_options
);
3296 gcc_assert (opts_set
== &global_options_set
);
3297 gcc_assert (kind
== DK_UNSPECIFIED
);
3298 gcc_assert (loc
== UNKNOWN_LOCATION
);
3299 gcc_assert (dc
== global_dc
);
3305 struct spec_list
*sl
;
3307 for (sl
= specs
; sl
; sl
= sl
->next
)
3308 printf ("*%s:\n%s\n\n", sl
->name
, *(sl
->ptr_spec
));
3309 if (link_command_spec
)
3310 printf ("*link_command:\n%s\n\n", link_command_spec
);
3314 case OPT_dumpversion
:
3315 printf ("%s\n", spec_version
);
3318 case OPT_dumpmachine
:
3319 printf ("%s\n", spec_machine
);
3325 /* CPP driver cannot obtain switch from cc1_options. */
3327 add_preprocessor_option ("--version", strlen ("--version"));
3328 add_assembler_option ("--version", strlen ("--version"));
3329 add_linker_option ("--version", strlen ("--version"));
3333 print_help_list
= 1;
3335 /* CPP driver cannot obtain switch from cc1_options. */
3337 add_preprocessor_option ("--help", 6);
3338 add_assembler_option ("--help", 6);
3339 add_linker_option ("--help", 6);
3343 print_subprocess_help
= 2;
3346 case OPT__target_help
:
3347 print_subprocess_help
= 1;
3349 /* CPP driver cannot obtain switch from cc1_options. */
3351 add_preprocessor_option ("--target-help", 13);
3352 add_assembler_option ("--target-help", 13);
3353 add_linker_option ("--target-help", 13);
3356 case OPT__no_sysroot_suffix
:
3357 case OPT_pass_exit_codes
:
3358 case OPT_print_search_dirs
:
3359 case OPT_print_file_name_
:
3360 case OPT_print_prog_name_
:
3361 case OPT_print_multi_lib
:
3362 case OPT_print_multi_directory
:
3363 case OPT_print_sysroot
:
3364 case OPT_print_multi_os_directory
:
3365 case OPT_print_multiarch
:
3366 case OPT_print_sysroot_headers_suffix
:
3369 /* These options set the variables specified in common.opt
3370 automatically, and do not need to be saved for spec
3375 case OPT_print_libgcc_file_name
:
3376 print_file_name
= "libgcc.a";
3380 case OPT_fcompare_debug_second
:
3381 compare_debug_second
= 1;
3384 case OPT_fcompare_debug
:
3388 compare_debug_replacement_opt
= "-fcompare-debug=";
3390 goto compare_debug_with_arg
;
3393 compare_debug_replacement_opt
= "-fcompare-debug=-gtoggle";
3395 goto compare_debug_with_arg
;
3402 case OPT_fcompare_debug_
:
3403 compare_debug_replacement_opt
= decoded
->canonical_option
[0];
3404 compare_debug_with_arg
:
3405 gcc_assert (decoded
->canonical_option_num_elements
== 1);
3406 gcc_assert (arg
!= NULL
);
3411 if (compare_debug
< 0)
3412 compare_debug_opt
= NULL
;
3414 compare_debug_opt
= arg
;
3415 save_switch (compare_debug_replacement_opt
, 0, NULL
, validated
, true);
3421 /* Pass the rest of this option to the assembler. */
3423 /* Split the argument at commas. */
3425 for (j
= 0; arg
[j
]; j
++)
3428 add_assembler_option (arg
+ prev
, j
- prev
);
3432 /* Record the part after the last comma. */
3433 add_assembler_option (arg
+ prev
, j
- prev
);
3441 /* Pass the rest of this option to the preprocessor. */
3443 /* Split the argument at commas. */
3445 for (j
= 0; arg
[j
]; j
++)
3448 add_preprocessor_option (arg
+ prev
, j
- prev
);
3452 /* Record the part after the last comma. */
3453 add_preprocessor_option (arg
+ prev
, j
- prev
);
3461 /* Split the argument at commas. */
3463 for (j
= 0; arg
[j
]; j
++)
3466 add_infile (save_string (arg
+ prev
, j
- prev
), "*");
3469 /* Record the part after the last comma. */
3470 add_infile (arg
+ prev
, "*");
3476 add_infile (arg
, "*");
3480 case OPT_Xpreprocessor
:
3481 add_preprocessor_option (arg
, strlen (arg
));
3485 case OPT_Xassembler
:
3486 add_assembler_option (arg
, strlen (arg
));
3491 /* POSIX allows separation of -l and the lib arg; canonicalize
3492 by concatenating -l with its arg */
3493 add_infile (concat ("-l", arg
, NULL
), "*");
3498 /* Similarly, canonicalize -L for linkers that may not accept
3499 separate arguments. */
3500 save_switch (concat ("-L", arg
, NULL
), 0, NULL
, validated
, true);
3505 save_switch (concat ("-F", arg
, NULL
), 0, NULL
, validated
, true);
3508 case OPT_save_temps
:
3509 save_temps_flag
= SAVE_TEMPS_CWD
;
3513 case OPT_save_temps_
:
3514 if (strcmp (arg
, "cwd") == 0)
3515 save_temps_flag
= SAVE_TEMPS_CWD
;
3516 else if (strcmp (arg
, "obj") == 0
3517 || strcmp (arg
, "object") == 0)
3518 save_temps_flag
= SAVE_TEMPS_OBJ
;
3520 fatal_error ("%qs is an unknown -save-temps option",
3521 decoded
->orig_option_with_args_text
);
3524 case OPT_no_canonical_prefixes
:
3525 /* Already handled as a special case, so ignored here. */
3531 /* These options set the variables specified in common.opt
3532 automatically, but do need to be saved for spec
3538 struct user_specs
*user
= XNEW (struct user_specs
);
3540 user
->next
= (struct user_specs
*) 0;
3541 user
->filename
= arg
;
3542 if (user_specs_tail
)
3543 user_specs_tail
->next
= user
;
3545 user_specs_head
= user
;
3546 user_specs_tail
= user
;
3552 target_system_root
= arg
;
3553 target_system_root_changed
= 1;
3558 if (report_times_to_file
)
3559 fclose (report_times_to_file
);
3560 report_times_to_file
= fopen (arg
, "a");
3566 This is similar to -v except that there is no execution
3567 of the commands and the echoed arguments are quoted. It
3568 is intended for use in shell scripts to capture the
3569 driver-generated command line. */
3570 verbose_only_flag
++;
3577 size_t len
= strlen (arg
);
3579 /* Catch the case where the user has forgotten to append a
3580 directory separator to the path. Note, they may be using
3581 -B to add an executable name prefix, eg "i386-elf-", in
3582 order to distinguish between multiple installations of
3583 GCC in the same directory. Hence we must check to see
3584 if appending a directory separator actually makes a
3585 valid directory name. */
3586 if (!IS_DIR_SEPARATOR (arg
[len
- 1])
3587 && is_directory (arg
, false))
3589 char *tmp
= XNEWVEC (char, len
+ 2);
3591 tmp
[len
] = DIR_SEPARATOR
;
3596 add_prefix (&exec_prefixes
, arg
, NULL
,
3597 PREFIX_PRIORITY_B_OPT
, 0, 0);
3598 add_prefix (&startfile_prefixes
, arg
, NULL
,
3599 PREFIX_PRIORITY_B_OPT
, 0, 0);
3600 add_prefix (&include_prefixes
, arg
, NULL
,
3601 PREFIX_PRIORITY_B_OPT
, 0, 0);
3608 if (!strcmp (spec_lang
, "none"))
3609 /* Suppress the warning if -xnone comes after the last input
3610 file, because alternate command interfaces like g++ might
3611 find it useful to place -xnone after each input file. */
3614 last_language_n_infiles
= n_infiles
;
3620 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3621 arg
= convert_filename (arg
, ! have_c
, 0);
3623 /* Save the output name in case -save-temps=obj was used. */
3624 save_temps_prefix
= xstrdup (arg
);
3625 /* On some systems, ld cannot handle "-o" without a space. So
3626 split the option from its argument. */
3627 save_switch ("-o", 1, &arg
, validated
, true);
3630 case OPT_static_libgcc
:
3631 case OPT_shared_libgcc
:
3632 case OPT_static_libgfortran
:
3633 case OPT_static_libstdc__
:
3634 /* These are always valid, since gcc.c itself understands the
3635 first two, gfortranspec.c understands -static-libgfortran and
3636 g++spec.c understands -static-libstdc++ */
3641 /* Various driver options need no special processing at this
3642 point, having been handled in a prescan above or being
3643 handled by specs. */
3648 save_switch (decoded
->canonical_option
[0],
3649 decoded
->canonical_option_num_elements
- 1,
3650 &decoded
->canonical_option
[1], validated
, true);
3654 /* Put the driver's standard set of option handlers in *HANDLERS. */
3657 set_option_handlers (struct cl_option_handlers
*handlers
)
3659 handlers
->unknown_option_callback
= driver_unknown_option_callback
;
3660 handlers
->wrong_lang_callback
= driver_wrong_lang_callback
;
3661 handlers
->num_handlers
= 3;
3662 handlers
->handlers
[0].handler
= driver_handle_option
;
3663 handlers
->handlers
[0].mask
= CL_DRIVER
;
3664 handlers
->handlers
[1].handler
= common_handle_option
;
3665 handlers
->handlers
[1].mask
= CL_COMMON
;
3666 handlers
->handlers
[2].handler
= target_handle_option
;
3667 handlers
->handlers
[2].mask
= CL_TARGET
;
3670 /* Create the vector `switches' and its contents.
3671 Store its length in `n_switches'. */
3674 process_command (unsigned int decoded_options_count
,
3675 struct cl_decoded_option
*decoded_options
)
3679 char *tooldir_prefix
, *tooldir_prefix2
;
3680 char *(*get_relative_prefix
) (const char *, const char *,
3681 const char *) = NULL
;
3682 struct cl_option_handlers handlers
;
3685 gcc_exec_prefix
= getenv ("GCC_EXEC_PREFIX");
3689 added_libraries
= 0;
3691 /* Figure compiler version from version string. */
3693 compiler_version
= temp1
= xstrdup (version_string
);
3695 for (; *temp1
; ++temp1
)
3704 /* Handle any -no-canonical-prefixes flag early, to assign the function
3705 that builds relative prefixes. This function creates default search
3706 paths that are needed later in normal option handling. */
3708 for (j
= 1; j
< decoded_options_count
; j
++)
3710 if (decoded_options
[j
].opt_index
== OPT_no_canonical_prefixes
)
3712 get_relative_prefix
= make_relative_prefix_ignore_links
;
3716 if (! get_relative_prefix
)
3717 get_relative_prefix
= make_relative_prefix
;
3719 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3720 see if we can create it from the pathname specified in
3721 decoded_options[0].arg. */
3723 gcc_libexec_prefix
= standard_libexec_prefix
;
3725 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3726 if (!gcc_exec_prefix
)
3728 gcc_exec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3729 standard_bindir_prefix
,
3730 standard_exec_prefix
);
3731 gcc_libexec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3732 standard_bindir_prefix
,
3733 standard_libexec_prefix
);
3734 if (gcc_exec_prefix
)
3735 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix
, NULL
));
3739 /* make_relative_prefix requires a program name, but
3740 GCC_EXEC_PREFIX is typically a directory name with a trailing
3741 / (which is ignored by make_relative_prefix), so append a
3743 char *tmp_prefix
= concat (gcc_exec_prefix
, "gcc", NULL
);
3744 gcc_libexec_prefix
= get_relative_prefix (tmp_prefix
,
3745 standard_exec_prefix
,
3746 standard_libexec_prefix
);
3748 /* The path is unrelocated, so fallback to the original setting. */
3749 if (!gcc_libexec_prefix
)
3750 gcc_libexec_prefix
= standard_libexec_prefix
;
3756 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3757 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3758 or an automatically created GCC_EXEC_PREFIX from
3759 decoded_options[0].arg. */
3761 /* Do language-specific adjustment/addition of flags. */
3762 lang_specific_driver (&decoded_options
, &decoded_options_count
,
3765 if (gcc_exec_prefix
)
3767 int len
= strlen (gcc_exec_prefix
);
3769 if (len
> (int) sizeof ("/lib/gcc/") - 1
3770 && (IS_DIR_SEPARATOR (gcc_exec_prefix
[len
-1])))
3772 temp
= gcc_exec_prefix
+ len
- sizeof ("/lib/gcc/") + 1;
3773 if (IS_DIR_SEPARATOR (*temp
)
3774 && filename_ncmp (temp
+ 1, "lib", 3) == 0
3775 && IS_DIR_SEPARATOR (temp
[4])
3776 && filename_ncmp (temp
+ 5, "gcc", 3) == 0)
3777 len
-= sizeof ("/lib/gcc/") - 1;
3780 set_std_prefix (gcc_exec_prefix
, len
);
3781 add_prefix (&exec_prefixes
, gcc_libexec_prefix
, "GCC",
3782 PREFIX_PRIORITY_LAST
, 0, 0);
3783 add_prefix (&startfile_prefixes
, gcc_exec_prefix
, "GCC",
3784 PREFIX_PRIORITY_LAST
, 0, 0);
3787 /* COMPILER_PATH and LIBRARY_PATH have values
3788 that are lists of directory names with colons. */
3790 temp
= getenv ("COMPILER_PATH");
3793 const char *startp
, *endp
;
3794 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3796 startp
= endp
= temp
;
3799 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3801 strncpy (nstore
, startp
, endp
- startp
);
3803 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3804 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3806 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3807 nstore
[endp
- startp
+ 1] = 0;
3810 nstore
[endp
- startp
] = 0;
3811 add_prefix (&exec_prefixes
, nstore
, 0,
3812 PREFIX_PRIORITY_LAST
, 0, 0);
3813 add_prefix (&include_prefixes
, nstore
, 0,
3814 PREFIX_PRIORITY_LAST
, 0, 0);
3817 endp
= startp
= endp
+ 1;
3824 temp
= getenv (LIBRARY_PATH_ENV
);
3825 if (temp
&& *cross_compile
== '0')
3827 const char *startp
, *endp
;
3828 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3830 startp
= endp
= temp
;
3833 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3835 strncpy (nstore
, startp
, endp
- startp
);
3837 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3838 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3840 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3841 nstore
[endp
- startp
+ 1] = 0;
3844 nstore
[endp
- startp
] = 0;
3845 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3846 PREFIX_PRIORITY_LAST
, 0, 1);
3849 endp
= startp
= endp
+ 1;
3856 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3857 temp
= getenv ("LPATH");
3858 if (temp
&& *cross_compile
== '0')
3860 const char *startp
, *endp
;
3861 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3863 startp
= endp
= temp
;
3866 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3868 strncpy (nstore
, startp
, endp
- startp
);
3870 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3871 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3873 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3874 nstore
[endp
- startp
+ 1] = 0;
3877 nstore
[endp
- startp
] = 0;
3878 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3879 PREFIX_PRIORITY_LAST
, 0, 1);
3882 endp
= startp
= endp
+ 1;
3889 /* Process the options and store input files and switches in their
3892 last_language_n_infiles
= -1;
3894 set_option_handlers (&handlers
);
3896 for (j
= 1; j
< decoded_options_count
; j
++)
3898 switch (decoded_options
[j
].opt_index
)
3910 for (j
= 1; j
< decoded_options_count
; j
++)
3912 if (decoded_options
[j
].opt_index
== OPT_SPECIAL_input_file
)
3914 const char *arg
= decoded_options
[j
].arg
;
3915 const char *p
= strrchr (arg
, '@');
3919 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3920 arg
= convert_filename (arg
, 0, access (arg
, F_OK
));
3922 /* For LTO static archive support we handle input file
3923 specifications that are composed of a filename and
3924 an offset like FNAME@OFFSET. */
3927 && sscanf (p
, "@%li%n", &offset
, &consumed
) >= 1
3928 && strlen (p
) == (unsigned int)consumed
)
3930 fname
= (char *)xmalloc (p
- arg
+ 1);
3931 memcpy (fname
, arg
, p
- arg
);
3932 fname
[p
- arg
] = '\0';
3933 /* Only accept non-stdin and existing FNAME parts, otherwise
3934 try with the full name. */
3935 if (strcmp (fname
, "-") == 0 || access (fname
, F_OK
) < 0)
3938 fname
= xstrdup (arg
);
3942 fname
= xstrdup (arg
);
3944 if (strcmp (fname
, "-") != 0 && access (fname
, F_OK
) < 0)
3945 perror_with_name (fname
);
3947 add_infile (arg
, spec_lang
);
3953 read_cmdline_option (&global_options
, &global_options_set
,
3954 decoded_options
+ j
, UNKNOWN_LOCATION
,
3955 CL_DRIVER
, &handlers
, global_dc
);
3958 /* If -save-temps=obj and -o name, create the prefix to use for %b.
3959 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
3960 if (save_temps_flag
== SAVE_TEMPS_OBJ
&& save_temps_prefix
!= NULL
)
3962 save_temps_length
= strlen (save_temps_prefix
);
3963 temp
= strrchr (lbasename (save_temps_prefix
), '.');
3966 save_temps_length
-= strlen (temp
);
3967 save_temps_prefix
[save_temps_length
] = '\0';
3971 else if (save_temps_prefix
!= NULL
)
3973 free (save_temps_prefix
);
3974 save_temps_prefix
= NULL
;
3977 if (save_temps_flag
&& use_pipes
)
3979 /* -save-temps overrides -pipe, so that temp files are produced */
3980 if (save_temps_flag
)
3981 warning (0, "-pipe ignored because -save-temps specified");
3987 const char *gcd
= getenv ("GCC_COMPARE_DEBUG");
3989 if (gcd
&& gcd
[0] == '-')
3992 compare_debug_opt
= gcd
;
3994 else if (gcd
&& *gcd
&& strcmp (gcd
, "0"))
3997 compare_debug_opt
= "-gtoggle";
4000 else if (compare_debug
< 0)
4003 gcc_assert (!compare_debug_opt
);
4006 /* Set up the search paths. We add directories that we expect to
4007 contain GNU Toolchain components before directories specified by
4008 the machine description so that we will find GNU components (like
4009 the GNU assembler) before those of the host system. */
4011 /* If we don't know where the toolchain has been installed, use the
4012 configured-in locations. */
4013 if (!gcc_exec_prefix
)
4016 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "GCC",
4017 PREFIX_PRIORITY_LAST
, 1, 0);
4018 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "BINUTILS",
4019 PREFIX_PRIORITY_LAST
, 2, 0);
4020 add_prefix (&exec_prefixes
, standard_exec_prefix
, "BINUTILS",
4021 PREFIX_PRIORITY_LAST
, 2, 0);
4023 add_prefix (&startfile_prefixes
, standard_exec_prefix
, "BINUTILS",
4024 PREFIX_PRIORITY_LAST
, 1, 0);
4027 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix
));
4028 tooldir_prefix2
= concat (tooldir_base_prefix
, spec_machine
,
4029 dir_separator_str
, NULL
);
4031 /* Look for tools relative to the location from which the driver is
4032 running, or, if that is not available, the configured prefix. */
4034 = concat (gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
4035 spec_machine
, dir_separator_str
,
4036 spec_version
, dir_separator_str
, tooldir_prefix2
, NULL
);
4037 free (tooldir_prefix2
);
4039 add_prefix (&exec_prefixes
,
4040 concat (tooldir_prefix
, "bin", dir_separator_str
, NULL
),
4041 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 0);
4042 add_prefix (&startfile_prefixes
,
4043 concat (tooldir_prefix
, "lib", dir_separator_str
, NULL
),
4044 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 1);
4045 free (tooldir_prefix
);
4047 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
4048 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
4049 then consider it to relocate with the rest of the GCC installation
4050 if GCC_EXEC_PREFIX is set.
4051 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
4052 if (target_system_root
&& !target_system_root_changed
&& gcc_exec_prefix
)
4054 char *tmp_prefix
= get_relative_prefix (decoded_options
[0].arg
,
4055 standard_bindir_prefix
,
4056 target_system_root
);
4057 if (tmp_prefix
&& access_check (tmp_prefix
, F_OK
) == 0)
4059 target_system_root
= tmp_prefix
;
4060 target_system_root_changed
= 1;
4065 /* More prefixes are enabled in main, after we read the specs file
4066 and determine whether this is cross-compilation or not. */
4068 if (n_infiles
== last_language_n_infiles
&& spec_lang
!= 0)
4069 warning (0, "%<-x %s%> after last input file has no effect", spec_lang
);
4071 /* Synthesize -fcompare-debug flag from the GCC_COMPARE_DEBUG
4072 environment variable. */
4073 if (compare_debug
== 2 || compare_debug
== 3)
4075 const char *opt
= concat ("-fcompare-debug=", compare_debug_opt
, NULL
);
4076 save_switch (opt
, 0, NULL
, false, true);
4080 /* Ensure we only invoke each subprocess once. */
4081 if (print_subprocess_help
|| print_help_list
|| print_version
)
4085 /* Create a dummy input file, so that we can pass
4086 the help option on to the various sub-processes. */
4087 add_infile ("help-dummy", "c");
4091 switches
[n_switches
].part1
= 0;
4093 infiles
[n_infiles
].name
= 0;
4096 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4097 and place that in the environment. */
4100 set_collect_gcc_options (void)
4105 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4107 obstack_grow (&collect_obstack
, "COLLECT_GCC_OPTIONS=",
4108 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4111 for (i
= 0; (int) i
< n_switches
; i
++)
4113 const char *const *args
;
4116 obstack_grow (&collect_obstack
, " ", 1);
4120 /* Ignore elided switches. */
4121 if ((switches
[i
].live_cond
4122 & (SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
))
4126 obstack_grow (&collect_obstack
, "'-", 2);
4127 q
= switches
[i
].part1
;
4128 while ((p
= strchr (q
, '\'')))
4130 obstack_grow (&collect_obstack
, q
, p
- q
);
4131 obstack_grow (&collect_obstack
, "'\\''", 4);
4134 obstack_grow (&collect_obstack
, q
, strlen (q
));
4135 obstack_grow (&collect_obstack
, "'", 1);
4137 for (args
= switches
[i
].args
; args
&& *args
; args
++)
4139 obstack_grow (&collect_obstack
, " '", 2);
4141 while ((p
= strchr (q
, '\'')))
4143 obstack_grow (&collect_obstack
, q
, p
- q
);
4144 obstack_grow (&collect_obstack
, "'\\''", 4);
4147 obstack_grow (&collect_obstack
, q
, strlen (q
));
4148 obstack_grow (&collect_obstack
, "'", 1);
4151 obstack_grow (&collect_obstack
, "\0", 1);
4152 xputenv (XOBFINISH (&collect_obstack
, char *));
4155 /* Process a spec string, accumulating and running commands. */
4157 /* These variables describe the input file name.
4158 input_file_number is the index on outfiles of this file,
4159 so that the output file name can be stored for later use by %o.
4160 input_basename is the start of the part of the input file
4161 sans all directory names, and basename_length is the number
4162 of characters starting there excluding the suffix .c or whatever. */
4164 static const char *gcc_input_filename
;
4165 static int input_file_number
;
4166 size_t input_filename_length
;
4167 static int basename_length
;
4168 static int suffixed_basename_length
;
4169 static const char *input_basename
;
4170 static const char *input_suffix
;
4171 #ifndef HOST_LACKS_INODE_NUMBERS
4172 static struct stat input_stat
;
4174 static int input_stat_set
;
4176 /* The compiler used to process the current input file. */
4177 static struct compiler
*input_file_compiler
;
4179 /* These are variables used within do_spec and do_spec_1. */
4181 /* Nonzero if an arg has been started and not yet terminated
4182 (with space, tab or newline). */
4183 static int arg_going
;
4185 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4186 is a temporary file name. */
4187 static int delete_this_arg
;
4189 /* Nonzero means %w has been seen; the next arg to be terminated
4190 is the output file name of this compilation. */
4191 static int this_is_output_file
;
4193 /* Nonzero means %s has been seen; the next arg to be terminated
4194 is the name of a library file and we should try the standard
4195 search dirs for it. */
4196 static int this_is_library_file
;
4198 /* Nonzero means %T has been seen; the next arg to be terminated
4199 is the name of a linker script and we should try all of the
4200 standard search dirs for it. If it is found insert a --script
4201 command line switch and then substitute the full path in place,
4202 otherwise generate an error message. */
4203 static int this_is_linker_script
;
4205 /* Nonzero means that the input of this command is coming from a pipe. */
4206 static int input_from_pipe
;
4208 /* Nonnull means substitute this for any suffix when outputting a switches
4210 static const char *suffix_subst
;
4212 /* If there is an argument being accumulated, terminate it and store it. */
4215 end_going_arg (void)
4221 obstack_1grow (&obstack
, 0);
4222 string
= XOBFINISH (&obstack
, const char *);
4223 if (this_is_library_file
)
4224 string
= find_file (string
);
4225 if (this_is_linker_script
)
4227 char * full_script_path
= find_a_file (&startfile_prefixes
, string
, R_OK
, true);
4229 if (full_script_path
== NULL
)
4231 error ("unable to locate default linker script %qs in the library search paths", string
);
4232 /* Script was not found on search path. */
4235 store_arg ("--script", false, false);
4236 string
= full_script_path
;
4238 store_arg (string
, delete_this_arg
, this_is_output_file
);
4239 if (this_is_output_file
)
4240 outfiles
[input_file_number
] = string
;
4246 /* Parse the WRAPPER string which is a comma separated list of the command line
4247 and insert them into the beginning of argbuf. */
4250 insert_wrapper (const char *wrapper
)
4254 char *buf
= xstrdup (wrapper
);
4256 unsigned int old_length
= argbuf
.length ();
4264 while ((p
= strchr (p
, ',')) != NULL
);
4266 argbuf
.safe_grow (old_length
+ n
);
4267 memmove (argbuf
.address () + n
,
4269 old_length
* sizeof (const_char_p
));
4283 while ((p
= strchr (p
, ',')) != NULL
);
4284 gcc_assert (i
== n
);
4287 /* Process the spec SPEC and run the commands specified therein.
4288 Returns 0 if the spec is successfully processed; -1 if failed. */
4291 do_spec (const char *spec
)
4295 value
= do_spec_2 (spec
);
4297 /* Force out any unfinished command.
4298 If -pipe, this forces out the last command if it ended in `|'. */
4301 if (argbuf
.length () > 0
4302 && !strcmp (argbuf
.last (), "|"))
4305 set_collect_gcc_options ();
4307 if (argbuf
.length () > 0)
4315 do_spec_2 (const char *spec
)
4321 delete_this_arg
= 0;
4322 this_is_output_file
= 0;
4323 this_is_library_file
= 0;
4324 this_is_linker_script
= 0;
4325 input_from_pipe
= 0;
4326 suffix_subst
= NULL
;
4328 result
= do_spec_1 (spec
, 0, NULL
);
4336 /* Process the given spec string and add any new options to the end
4337 of the switches/n_switches array. */
4340 do_option_spec (const char *name
, const char *spec
)
4342 unsigned int i
, value_count
, value_len
;
4343 const char *p
, *q
, *value
;
4344 char *tmp_spec
, *tmp_spec_p
;
4346 if (configure_default_options
[0].name
== NULL
)
4349 for (i
= 0; i
< ARRAY_SIZE (configure_default_options
); i
++)
4350 if (strcmp (configure_default_options
[i
].name
, name
) == 0)
4352 if (i
== ARRAY_SIZE (configure_default_options
))
4355 value
= configure_default_options
[i
].value
;
4356 value_len
= strlen (value
);
4358 /* Compute the size of the final spec. */
4361 while ((p
= strstr (p
, "%(VALUE)")) != NULL
)
4367 /* Replace each %(VALUE) by the specified value. */
4368 tmp_spec
= (char *) alloca (strlen (spec
) + 1
4369 + value_count
* (value_len
- strlen ("%(VALUE)")));
4370 tmp_spec_p
= tmp_spec
;
4372 while ((p
= strstr (q
, "%(VALUE)")) != NULL
)
4374 memcpy (tmp_spec_p
, q
, p
- q
);
4375 tmp_spec_p
= tmp_spec_p
+ (p
- q
);
4376 memcpy (tmp_spec_p
, value
, value_len
);
4377 tmp_spec_p
+= value_len
;
4378 q
= p
+ strlen ("%(VALUE)");
4380 strcpy (tmp_spec_p
, q
);
4382 do_self_spec (tmp_spec
);
4385 /* Process the given spec string and add any new options to the end
4386 of the switches/n_switches array. */
4389 do_self_spec (const char *spec
)
4394 do_spec_1 (" ", 0, NULL
);
4396 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4397 do_self_specs adds the replacements to switches array, so it shouldn't
4398 be processed afterwards. */
4399 for (i
= 0; i
< n_switches
; i
++)
4400 if ((switches
[i
].live_cond
& SWITCH_IGNORE
))
4401 switches
[i
].live_cond
|= SWITCH_IGNORE_PERMANENTLY
;
4403 if (argbuf
.length () > 0)
4405 const char **argbuf_copy
;
4406 struct cl_decoded_option
*decoded_options
;
4407 struct cl_option_handlers handlers
;
4408 unsigned int decoded_options_count
;
4411 /* Create a copy of argbuf with a dummy argv[0] entry for
4412 decode_cmdline_options_to_array. */
4413 argbuf_copy
= XNEWVEC (const char *,
4414 argbuf
.length () + 1);
4415 argbuf_copy
[0] = "";
4416 memcpy (argbuf_copy
+ 1, argbuf
.address (),
4417 argbuf
.length () * sizeof (const char *));
4419 decode_cmdline_options_to_array (argbuf
.length () + 1,
4421 CL_DRIVER
, &decoded_options
,
4422 &decoded_options_count
);
4425 set_option_handlers (&handlers
);
4427 for (j
= 1; j
< decoded_options_count
; j
++)
4429 switch (decoded_options
[j
].opt_index
)
4431 case OPT_SPECIAL_input_file
:
4432 /* Specs should only generate options, not input
4434 if (strcmp (decoded_options
[j
].arg
, "-") != 0)
4435 fatal_error ("switch %qs does not start with %<-%>",
4436 decoded_options
[j
].arg
);
4438 fatal_error ("spec-generated switch is just %<-%>");
4441 case OPT_fcompare_debug_second
:
4442 case OPT_fcompare_debug
:
4443 case OPT_fcompare_debug_
:
4445 /* Avoid duplicate processing of some options from
4446 compare-debug specs; just save them here. */
4447 save_switch (decoded_options
[j
].canonical_option
[0],
4448 (decoded_options
[j
].canonical_option_num_elements
4450 &decoded_options
[j
].canonical_option
[1], false, true);
4454 read_cmdline_option (&global_options
, &global_options_set
,
4455 decoded_options
+ j
, UNKNOWN_LOCATION
,
4456 CL_DRIVER
, &handlers
, global_dc
);
4462 switches
[n_switches
].part1
= 0;
4466 /* Callback for processing %D and %I specs. */
4468 struct spec_path_info
{
4473 bool separate_options
;
4477 spec_path (char *path
, void *data
)
4479 struct spec_path_info
*info
= (struct spec_path_info
*) data
;
4483 if (info
->omit_relative
&& !IS_ABSOLUTE_PATH (path
))
4486 if (info
->append_len
!= 0)
4488 len
= strlen (path
);
4489 memcpy (path
+ len
, info
->append
, info
->append_len
+ 1);
4492 if (!is_directory (path
, true))
4495 do_spec_1 (info
->option
, 1, NULL
);
4496 if (info
->separate_options
)
4497 do_spec_1 (" ", 0, NULL
);
4499 if (info
->append_len
== 0)
4501 len
= strlen (path
);
4502 save
= path
[len
- 1];
4503 if (IS_DIR_SEPARATOR (path
[len
- 1]))
4504 path
[len
- 1] = '\0';
4507 do_spec_1 (path
, 1, NULL
);
4508 do_spec_1 (" ", 0, NULL
);
4510 /* Must not damage the original path. */
4511 if (info
->append_len
== 0)
4512 path
[len
- 1] = save
;
4517 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4521 create_at_file (char **argv
)
4523 char *temp_file
= make_temp_file ("");
4524 char *at_argument
= concat ("@", temp_file
, NULL
);
4525 FILE *f
= fopen (temp_file
, "w");
4529 fatal_error ("could not open temporary response file %s",
4532 status
= writeargv (argv
, f
);
4535 fatal_error ("could not write to temporary response file %s",
4538 status
= fclose (f
);
4541 fatal_error ("could not close temporary response file %s",
4544 store_arg (at_argument
, 0, 0);
4546 record_temp_file (temp_file
, !save_temps_flag
, !save_temps_flag
);
4549 /* True if we should compile INFILE. */
4552 compile_input_file_p (struct infile
*infile
)
4554 if ((!infile
->language
) || (infile
->language
[0] != '*'))
4555 if (infile
->incompiler
== input_file_compiler
)
4560 /* Process each member of VEC as a spec. */
4563 do_specs_vec (vec
<char_p
> vec
)
4568 FOR_EACH_VEC_ELT (vec
, ix
, opt
)
4570 do_spec_1 (opt
, 1, NULL
);
4571 /* Make each accumulated option a separate argument. */
4572 do_spec_1 (" ", 0, NULL
);
4576 /* Process the sub-spec SPEC as a portion of a larger spec.
4577 This is like processing a whole spec except that we do
4578 not initialize at the beginning and we do not supply a
4579 newline by default at the end.
4580 INSWITCH nonzero means don't process %-sequences in SPEC;
4581 in this case, % is treated as an ordinary character.
4582 This is used while substituting switches.
4583 INSWITCH nonzero also causes SPC not to terminate an argument.
4585 Value is zero unless a line was finished
4586 and the command on that line reported an error. */
4589 do_spec_1 (const char *spec
, int inswitch
, const char *soft_matched_part
)
4591 const char *p
= spec
;
4596 /* If it's an empty string argument to a switch, keep it as is. */
4597 if (inswitch
&& !*p
)
4601 /* If substituting a switch, treat all chars like letters.
4602 Otherwise, NL, SPC, TAB and % are special. */
4603 switch (inswitch
? 'a' : c
)
4608 if (argbuf
.length () > 0
4609 && !strcmp (argbuf
.last (), "|"))
4611 /* A `|' before the newline means use a pipe here,
4612 but only if -pipe was specified.
4613 Otherwise, execute now and don't pass the `|' as an arg. */
4616 input_from_pipe
= 1;
4623 set_collect_gcc_options ();
4625 if (argbuf
.length () > 0)
4631 /* Reinitialize for a new command, and for a new argument. */
4634 delete_this_arg
= 0;
4635 this_is_output_file
= 0;
4636 this_is_library_file
= 0;
4637 this_is_linker_script
= 0;
4638 input_from_pipe
= 0;
4645 obstack_1grow (&obstack
, c
);
4653 /* Reinitialize for a new argument. */
4654 delete_this_arg
= 0;
4655 this_is_output_file
= 0;
4656 this_is_library_file
= 0;
4657 this_is_linker_script
= 0;
4664 fatal_error ("spec %qs invalid", spec
);
4667 if (save_temps_length
)
4668 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4670 obstack_grow (&obstack
, input_basename
, basename_length
);
4671 if (compare_debug
< 0)
4672 obstack_grow (&obstack
, ".gk", 3);
4677 if (save_temps_length
)
4678 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4680 obstack_grow (&obstack
, input_basename
, suffixed_basename_length
);
4681 if (compare_debug
< 0)
4682 obstack_grow (&obstack
, ".gk", 3);
4687 delete_this_arg
= 2;
4690 /* Dump out the directories specified with LIBRARY_PATH,
4691 followed by the absolute directories
4692 that we search for startfiles. */
4695 struct spec_path_info info
;
4698 info
.append_len
= 0;
4699 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4700 /* Used on systems which record the specified -L dirs
4701 and use them to search for dynamic linking.
4702 Relative directories always come from -B,
4703 and it is better not to use them for searching
4704 at run time. In particular, stage1 loses. */
4705 info
.omit_relative
= true;
4707 info
.omit_relative
= false;
4709 info
.separate_options
= false;
4711 for_each_path (&startfile_prefixes
, true, 0, spec_path
, &info
);
4716 /* %efoo means report an error with `foo' as error message
4717 and don't execute any more commands for this file. */
4721 while (*p
!= 0 && *p
!= '\n')
4723 buf
= (char *) alloca (p
- q
+ 1);
4724 strncpy (buf
, q
, p
- q
);
4726 error ("%s", _(buf
));
4731 /* %nfoo means report a notice with `foo' on stderr. */
4735 while (*p
!= 0 && *p
!= '\n')
4737 buf
= (char *) alloca (p
- q
+ 1);
4738 strncpy (buf
, q
, p
- q
);
4740 inform (0, "%s", _(buf
));
4750 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4751 defined, and it is not a directory, and it is
4752 writable, use it. Otherwise, treat this like any
4753 other temporary file. */
4755 if ((!save_temps_flag
)
4756 && (stat (HOST_BIT_BUCKET
, &st
) == 0) && (!S_ISDIR (st
.st_mode
))
4757 && (access (HOST_BIT_BUCKET
, W_OK
) == 0))
4759 obstack_grow (&obstack
, HOST_BIT_BUCKET
,
4760 strlen (HOST_BIT_BUCKET
));
4761 delete_this_arg
= 0;
4766 goto create_temp_file
;
4770 obstack_1grow (&obstack
, '-');
4771 delete_this_arg
= 0;
4774 /* consume suffix */
4775 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4777 if (p
[0] == '%' && p
[1] == 'O')
4782 goto create_temp_file
;
4786 /* consume suffix */
4787 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4789 if (p
[0] == '%' && p
[1] == 'O')
4794 goto create_temp_file
;
4800 struct temp_name
*t
;
4802 const char *suffix
= p
;
4803 char *saved_suffix
= NULL
;
4805 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4807 suffix_length
= p
- suffix
;
4808 if (p
[0] == '%' && p
[1] == 'O')
4811 /* We don't support extra suffix characters after %O. */
4812 if (*p
== '.' || ISALNUM ((unsigned char) *p
))
4813 fatal_error ("spec %qs has invalid %<%%0%c%>", spec
, *p
);
4814 if (suffix_length
== 0)
4815 suffix
= TARGET_OBJECT_SUFFIX
;
4819 = XNEWVEC (char, suffix_length
4820 + strlen (TARGET_OBJECT_SUFFIX
));
4821 strncpy (saved_suffix
, suffix
, suffix_length
);
4822 strcpy (saved_suffix
+ suffix_length
,
4823 TARGET_OBJECT_SUFFIX
);
4825 suffix_length
+= strlen (TARGET_OBJECT_SUFFIX
);
4828 if (compare_debug
< 0)
4830 suffix
= concat (".gk", suffix
, NULL
);
4834 /* If -save-temps=obj and -o were specified, use that for the
4836 if (save_temps_length
)
4839 temp_filename_length
4840 = save_temps_length
+ suffix_length
+ 1;
4841 tmp
= (char *) alloca (temp_filename_length
);
4842 memcpy (tmp
, save_temps_prefix
, save_temps_length
);
4843 memcpy (tmp
+ save_temps_length
, suffix
, suffix_length
);
4844 tmp
[save_temps_length
+ suffix_length
] = '\0';
4845 temp_filename
= save_string (tmp
, save_temps_length
4847 obstack_grow (&obstack
, temp_filename
,
4848 temp_filename_length
);
4850 delete_this_arg
= 0;
4854 /* If the gcc_input_filename has the same suffix specified
4855 for the %g, %u, or %U, and -save-temps is specified,
4856 we could end up using that file as an intermediate
4857 thus clobbering the user's source file (.e.g.,
4858 gcc -save-temps foo.s would clobber foo.s with the
4859 output of cpp0). So check for this condition and
4860 generate a temp file as the intermediate. */
4862 if (save_temps_flag
)
4865 temp_filename_length
= basename_length
+ suffix_length
+ 1;
4866 tmp
= (char *) alloca (temp_filename_length
);
4867 memcpy (tmp
, input_basename
, basename_length
);
4868 memcpy (tmp
+ basename_length
, suffix
, suffix_length
);
4869 tmp
[basename_length
+ suffix_length
] = '\0';
4870 temp_filename
= tmp
;
4872 if (filename_cmp (temp_filename
, gcc_input_filename
) != 0)
4874 #ifndef HOST_LACKS_INODE_NUMBERS
4875 struct stat st_temp
;
4877 /* Note, set_input() resets input_stat_set to 0. */
4878 if (input_stat_set
== 0)
4880 input_stat_set
= stat (gcc_input_filename
,
4882 if (input_stat_set
>= 0)
4886 /* If we have the stat for the gcc_input_filename
4887 and we can do the stat for the temp_filename
4888 then the they could still refer to the same
4889 file if st_dev/st_ino's are the same. */
4890 if (input_stat_set
!= 1
4891 || stat (temp_filename
, &st_temp
) < 0
4892 || input_stat
.st_dev
!= st_temp
.st_dev
4893 || input_stat
.st_ino
!= st_temp
.st_ino
)
4895 /* Just compare canonical pathnames. */
4896 char* input_realname
= lrealpath (gcc_input_filename
);
4897 char* temp_realname
= lrealpath (temp_filename
);
4898 bool files_differ
= filename_cmp (input_realname
, temp_realname
);
4899 free (input_realname
);
4900 free (temp_realname
);
4904 temp_filename
= save_string (temp_filename
,
4905 temp_filename_length
+ 1);
4906 obstack_grow (&obstack
, temp_filename
,
4907 temp_filename_length
);
4909 delete_this_arg
= 0;
4915 /* See if we already have an association of %g/%u/%U and
4917 for (t
= temp_names
; t
; t
= t
->next
)
4918 if (t
->length
== suffix_length
4919 && strncmp (t
->suffix
, suffix
, suffix_length
) == 0
4920 && t
->unique
== (c
== 'u' || c
== 'U' || c
== 'j'))
4923 /* Make a new association if needed. %u and %j
4925 if (t
== 0 || c
== 'u' || c
== 'j')
4929 t
= XNEW (struct temp_name
);
4930 t
->next
= temp_names
;
4933 t
->length
= suffix_length
;
4936 t
->suffix
= saved_suffix
;
4937 saved_suffix
= NULL
;
4940 t
->suffix
= save_string (suffix
, suffix_length
);
4941 t
->unique
= (c
== 'u' || c
== 'U' || c
== 'j');
4942 temp_filename
= make_temp_file (t
->suffix
);
4943 temp_filename_length
= strlen (temp_filename
);
4944 t
->filename
= temp_filename
;
4945 t
->filename_length
= temp_filename_length
;
4948 free (saved_suffix
);
4950 obstack_grow (&obstack
, t
->filename
, t
->filename_length
);
4951 delete_this_arg
= 1;
4959 if (at_file_supplied
)
4961 /* We are going to expand `%i' to `@FILE', where FILE
4962 is a newly-created temporary filename. The filenames
4963 that would usually be expanded in place of %o will be
4964 written to the temporary file. */
4969 for (i
= 0; i
< n_infiles
; i
++)
4970 if (compile_input_file_p (&infiles
[i
]))
4973 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
4975 /* Copy the strings over. */
4976 for (i
= 0, j
= 0; i
< n_infiles
; i
++)
4977 if (compile_input_file_p (&infiles
[i
]))
4979 argv
[j
] = CONST_CAST (char *, infiles
[i
].name
);
4980 infiles
[i
].compiled
= true;
4985 create_at_file (argv
);
4988 for (i
= 0; (int) i
< n_infiles
; i
++)
4989 if (compile_input_file_p (&infiles
[i
]))
4991 store_arg (infiles
[i
].name
, 0, 0);
4992 infiles
[i
].compiled
= true;
4997 obstack_grow (&obstack
, gcc_input_filename
,
4998 input_filename_length
);
5005 struct spec_path_info info
;
5009 do_spec_1 ("-imultilib", 1, NULL
);
5010 /* Make this a separate argument. */
5011 do_spec_1 (" ", 0, NULL
);
5012 do_spec_1 (multilib_dir
, 1, NULL
);
5013 do_spec_1 (" ", 0, NULL
);
5018 do_spec_1 ("-imultiarch", 1, NULL
);
5019 /* Make this a separate argument. */
5020 do_spec_1 (" ", 0, NULL
);
5021 do_spec_1 (multiarch_dir
, 1, NULL
);
5022 do_spec_1 (" ", 0, NULL
);
5025 if (gcc_exec_prefix
)
5027 do_spec_1 ("-iprefix", 1, NULL
);
5028 /* Make this a separate argument. */
5029 do_spec_1 (" ", 0, NULL
);
5030 do_spec_1 (gcc_exec_prefix
, 1, NULL
);
5031 do_spec_1 (" ", 0, NULL
);
5034 if (target_system_root_changed
||
5035 (target_system_root
&& target_sysroot_hdrs_suffix
))
5037 do_spec_1 ("-isysroot", 1, NULL
);
5038 /* Make this a separate argument. */
5039 do_spec_1 (" ", 0, NULL
);
5040 do_spec_1 (target_system_root
, 1, NULL
);
5041 if (target_sysroot_hdrs_suffix
)
5042 do_spec_1 (target_sysroot_hdrs_suffix
, 1, NULL
);
5043 do_spec_1 (" ", 0, NULL
);
5046 info
.option
= "-isystem";
5047 info
.append
= "include";
5048 info
.append_len
= strlen (info
.append
);
5049 info
.omit_relative
= false;
5050 info
.separate_options
= true;
5052 for_each_path (&include_prefixes
, false, info
.append_len
,
5055 info
.append
= "include-fixed";
5056 if (*sysroot_hdrs_suffix_spec
)
5057 info
.append
= concat (info
.append
, dir_separator_str
,
5058 multilib_dir
, NULL
);
5059 info
.append_len
= strlen (info
.append
);
5060 for_each_path (&include_prefixes
, false, info
.append_len
,
5067 int max
= n_infiles
;
5068 max
+= lang_specific_extra_outfiles
;
5070 if (HAVE_GNU_LD
&& at_file_supplied
)
5072 /* We are going to expand `%o' to `@FILE', where FILE
5073 is a newly-created temporary filename. The filenames
5074 that would usually be expanded in place of %o will be
5075 written to the temporary file. */
5080 /* Convert OUTFILES into a form suitable for writeargv. */
5082 /* Determine how many are non-NULL. */
5083 for (n_files
= 0, i
= 0; i
< max
; i
++)
5084 n_files
+= outfiles
[i
] != NULL
;
5086 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
5088 /* Copy the strings over. */
5089 for (i
= 0, j
= 0; i
< max
; i
++)
5092 argv
[j
] = CONST_CAST (char *, outfiles
[i
]);
5097 create_at_file (argv
);
5100 for (i
= 0; i
< max
; i
++)
5102 store_arg (outfiles
[i
], 0, 0);
5107 obstack_grow (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
5112 this_is_library_file
= 1;
5116 this_is_linker_script
= 1;
5120 outfiles
[input_file_number
] = NULL
;
5124 this_is_output_file
= 1;
5129 unsigned int cur_index
= argbuf
.length ();
5130 /* Handle the {...} following the %W. */
5132 fatal_error ("spec %qs has invalid %<%%W%c%>", spec
, *p
);
5133 p
= handle_braces (p
+ 1);
5137 /* If any args were output, mark the last one for deletion
5139 if (argbuf
.length () != cur_index
)
5140 record_temp_file (argbuf
.last (), 0, 1);
5144 /* %x{OPTION} records OPTION for %X to output. */
5152 /* Skip past the option value and make a copy. */
5154 fatal_error ("spec %qs has invalid %<%%x%c%>", spec
, *p
);
5157 string
= save_string (p1
+ 1, p
- p1
- 2);
5159 /* See if we already recorded this option. */
5160 FOR_EACH_VEC_ELT (linker_options
, ix
, opt
)
5161 if (! strcmp (string
, opt
))
5167 /* This option is new; add it. */
5168 add_linker_option (string
, strlen (string
));
5173 /* Dump out the options accumulated previously using %x. */
5175 do_specs_vec (linker_options
);
5178 /* Dump out the options accumulated previously using -Wa,. */
5180 do_specs_vec (assembler_options
);
5183 /* Dump out the options accumulated previously using -Wp,. */
5185 do_specs_vec (preprocessor_options
);
5188 /* Here are digits and numbers that just process
5189 a certain constant string as a spec. */
5192 value
= do_spec_1 (cc1_spec
, 0, NULL
);
5198 value
= do_spec_1 (cc1plus_spec
, 0, NULL
);
5204 value
= do_spec_1 (asm_spec
, 0, NULL
);
5210 value
= do_spec_1 (asm_final_spec
, 0, NULL
);
5217 const char *const spec
5218 = (input_file_compiler
->cpp_spec
5219 ? input_file_compiler
->cpp_spec
5221 value
= do_spec_1 (spec
, 0, NULL
);
5228 value
= do_spec_1 (endfile_spec
, 0, NULL
);
5234 value
= do_spec_1 (link_spec
, 0, NULL
);
5240 value
= do_spec_1 (lib_spec
, 0, NULL
);
5246 if (multilib_os_dir
== NULL
)
5247 obstack_1grow (&obstack
, '.');
5249 obstack_grow (&obstack
, multilib_os_dir
,
5250 strlen (multilib_os_dir
));
5254 value
= do_spec_1 (libgcc_spec
, 0, NULL
);
5260 /* We assume there is a directory
5261 separator at the end of this string. */
5262 if (target_system_root
)
5264 obstack_grow (&obstack
, target_system_root
,
5265 strlen (target_system_root
));
5266 if (target_sysroot_suffix
)
5267 obstack_grow (&obstack
, target_sysroot_suffix
,
5268 strlen (target_sysroot_suffix
));
5273 value
= do_spec_1 (startfile_spec
, 0, NULL
);
5278 /* Here we define characters other than letters and digits. */
5281 p
= handle_braces (p
);
5287 p
= handle_spec_function (p
);
5293 obstack_1grow (&obstack
, '%');
5300 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '%')
5302 suffix_subst
= save_string (p
- 1, len
+ 1);
5307 /* Henceforth ignore the option(s) matching the pattern
5313 int have_wildcard
= 0;
5318 switch_option
= SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
;
5320 switch_option
= SWITCH_IGNORE
;
5322 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '\t')
5325 if (p
[len
-1] == '*')
5328 for (i
= 0; i
< n_switches
; i
++)
5329 if (!strncmp (switches
[i
].part1
, p
, len
- have_wildcard
)
5330 && (have_wildcard
|| switches
[i
].part1
[len
] == '\0'))
5332 switches
[i
].live_cond
|= switch_option
;
5333 /* User switch be validated from validate_all_switches.
5334 when the definition is seen from the spec file.
5335 If not defined anywhere, will be rejected. */
5336 if (switches
[i
].known
)
5337 switches
[i
].validated
= true;
5345 if (soft_matched_part
)
5347 if (soft_matched_part
[0])
5348 do_spec_1 (soft_matched_part
, 1, NULL
);
5349 do_spec_1 (" ", 0, NULL
);
5352 /* Catch the case where a spec string contains something like
5353 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5354 hand side of the :. */
5355 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5358 /* Process a string found as the value of a spec given by name.
5359 This feature allows individual machine descriptions
5360 to add and use their own specs. */
5363 const char *name
= p
;
5364 struct spec_list
*sl
;
5367 /* The string after the S/P is the name of a spec that is to be
5369 while (*p
&& *p
!= ')')
5372 /* See if it's in the list. */
5373 for (len
= p
- name
, sl
= specs
; sl
; sl
= sl
->next
)
5374 if (sl
->name_len
== len
&& !strncmp (sl
->name
, name
, len
))
5376 name
= *(sl
->ptr_spec
);
5378 fnotice (stderr
, "Processing spec (%s), which is '%s'\n",
5386 value
= do_spec_1 (name
, 0, NULL
);
5391 /* Discard the closing paren. */
5398 error ("spec failure: unrecognized spec option %qc", c
);
5404 /* Backslash: treat next character as ordinary. */
5409 /* Ordinary character: put it into the current argument. */
5410 obstack_1grow (&obstack
, c
);
5414 /* End of string. If we are processing a spec function, we need to
5415 end any pending argument. */
5416 if (processing_spec_function
)
5422 /* Look up a spec function. */
5424 static const struct spec_function
*
5425 lookup_spec_function (const char *name
)
5427 const struct spec_function
*sf
;
5429 for (sf
= static_spec_functions
; sf
->name
!= NULL
; sf
++)
5430 if (strcmp (sf
->name
, name
) == 0)
5436 /* Evaluate a spec function. */
5439 eval_spec_function (const char *func
, const char *args
)
5441 const struct spec_function
*sf
;
5442 const char *funcval
;
5444 /* Saved spec processing context. */
5445 vec
<const_char_p
> save_argbuf
;
5448 int save_delete_this_arg
;
5449 int save_this_is_output_file
;
5450 int save_this_is_library_file
;
5451 int save_input_from_pipe
;
5452 int save_this_is_linker_script
;
5453 const char *save_suffix_subst
;
5455 int save_growing_size
;
5456 void *save_growing_value
;
5458 sf
= lookup_spec_function (func
);
5460 fatal_error ("unknown spec function %qs", func
);
5462 /* Push the spec processing context. */
5463 save_argbuf
= argbuf
;
5465 save_arg_going
= arg_going
;
5466 save_delete_this_arg
= delete_this_arg
;
5467 save_this_is_output_file
= this_is_output_file
;
5468 save_this_is_library_file
= this_is_library_file
;
5469 save_this_is_linker_script
= this_is_linker_script
;
5470 save_input_from_pipe
= input_from_pipe
;
5471 save_suffix_subst
= suffix_subst
;
5473 /* If we have some object growing now, finalize it so the args and function
5474 eval proceed from a cleared context. This is needed to prevent the first
5475 constructed arg from mistakenly including the growing value. We'll push
5476 this value back on the obstack once the function evaluation is done, to
5477 restore a consistent processing context for our caller. This is fine as
5478 the address of growing objects isn't guaranteed to remain stable until
5479 they are finalized, and we expect this situation to be rare enough for
5480 the extra copy not to be an issue. */
5481 save_growing_size
= obstack_object_size (&obstack
);
5482 if (save_growing_size
> 0)
5483 save_growing_value
= obstack_finish (&obstack
);
5485 /* Create a new spec processing context, and build the function
5489 if (do_spec_2 (args
) < 0)
5490 fatal_error ("error in args to spec function %qs", func
);
5492 /* argbuf_index is an index for the next argument to be inserted, and
5493 so contains the count of the args already inserted. */
5495 funcval
= (*sf
->func
) (argbuf
.length (),
5498 /* Pop the spec processing context. */
5500 argbuf
= save_argbuf
;
5502 arg_going
= save_arg_going
;
5503 delete_this_arg
= save_delete_this_arg
;
5504 this_is_output_file
= save_this_is_output_file
;
5505 this_is_library_file
= save_this_is_library_file
;
5506 this_is_linker_script
= save_this_is_linker_script
;
5507 input_from_pipe
= save_input_from_pipe
;
5508 suffix_subst
= save_suffix_subst
;
5510 if (save_growing_size
> 0)
5511 obstack_grow (&obstack
, save_growing_value
, save_growing_size
);
5516 /* Handle a spec function call of the form:
5520 ARGS is processed as a spec in a separate context and split into an
5521 argument vector in the normal fashion. The function returns a string
5522 containing a spec which we then process in the caller's context, or
5523 NULL if no processing is required. */
5526 handle_spec_function (const char *p
)
5529 const char *endp
, *funcval
;
5532 processing_spec_function
++;
5534 /* Get the function name. */
5535 for (endp
= p
; *endp
!= '\0'; endp
++)
5537 if (*endp
== '(') /* ) */
5539 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5540 if (!ISALNUM (*endp
) && !(*endp
== '-' || *endp
== '_'))
5541 fatal_error ("malformed spec function name");
5543 if (*endp
!= '(') /* ) */
5544 fatal_error ("no arguments for spec function");
5545 func
= save_string (p
, endp
- p
);
5548 /* Get the arguments. */
5549 for (count
= 0; *endp
!= '\0'; endp
++)
5558 else if (*endp
== '(') /* ) */
5563 fatal_error ("malformed spec function arguments");
5564 args
= save_string (p
, endp
- p
);
5567 /* p now points to just past the end of the spec function expression. */
5569 funcval
= eval_spec_function (func
, args
);
5570 if (funcval
!= NULL
&& do_spec_1 (funcval
, 0, NULL
) < 0)
5576 processing_spec_function
--;
5581 /* Inline subroutine of handle_braces. Returns true if the current
5582 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5584 input_suffix_matches (const char *atom
, const char *end_atom
)
5586 return (input_suffix
5587 && !strncmp (input_suffix
, atom
, end_atom
- atom
)
5588 && input_suffix
[end_atom
- atom
] == '\0');
5591 /* Subroutine of handle_braces. Returns true if the current
5592 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5594 input_spec_matches (const char *atom
, const char *end_atom
)
5596 return (input_file_compiler
5597 && input_file_compiler
->suffix
5598 && input_file_compiler
->suffix
[0] != '\0'
5599 && !strncmp (input_file_compiler
->suffix
+ 1, atom
,
5601 && input_file_compiler
->suffix
[end_atom
- atom
+ 1] == '\0');
5604 /* Subroutine of handle_braces. Returns true if a switch
5605 matching the atom bracketed by ATOM and END_ATOM appeared on the
5608 switch_matches (const char *atom
, const char *end_atom
, int starred
)
5611 int len
= end_atom
- atom
;
5612 int plen
= starred
? len
: -1;
5614 for (i
= 0; i
< n_switches
; i
++)
5615 if (!strncmp (switches
[i
].part1
, atom
, len
)
5616 && (starred
|| switches
[i
].part1
[len
] == '\0')
5617 && check_live_switch (i
, plen
))
5620 /* Check if a switch with separated form matching the atom.
5621 We check -D and -U switches. */
5622 else if (switches
[i
].args
!= 0)
5624 if ((*switches
[i
].part1
== 'D' || *switches
[i
].part1
== 'U')
5625 && *switches
[i
].part1
== atom
[0])
5627 if (!strncmp (switches
[i
].args
[0], &atom
[1], len
- 1)
5628 && (starred
|| (switches
[i
].part1
[1] == '\0'
5629 && switches
[i
].args
[0][len
- 1] == '\0'))
5630 && check_live_switch (i
, (starred
? 1 : -1)))
5638 /* Inline subroutine of handle_braces. Mark all of the switches which
5639 match ATOM (extends to END_ATOM; STARRED indicates whether there
5640 was a star after the atom) for later processing. */
5642 mark_matching_switches (const char *atom
, const char *end_atom
, int starred
)
5645 int len
= end_atom
- atom
;
5646 int plen
= starred
? len
: -1;
5648 for (i
= 0; i
< n_switches
; i
++)
5649 if (!strncmp (switches
[i
].part1
, atom
, len
)
5650 && (starred
|| switches
[i
].part1
[len
] == '\0')
5651 && check_live_switch (i
, plen
))
5652 switches
[i
].ordering
= 1;
5655 /* Inline subroutine of handle_braces. Process all the currently
5656 marked switches through give_switch, and clear the marks. */
5658 process_marked_switches (void)
5662 for (i
= 0; i
< n_switches
; i
++)
5663 if (switches
[i
].ordering
== 1)
5665 switches
[i
].ordering
= 0;
5670 /* Handle a %{ ... } construct. P points just inside the leading {.
5671 Returns a pointer one past the end of the brace block, or 0
5672 if we call do_spec_1 and that returns -1. */
5675 handle_braces (const char *p
)
5677 const char *atom
, *end_atom
;
5678 const char *d_atom
= NULL
, *d_end_atom
= NULL
;
5679 const char *orig
= p
;
5687 bool a_must_be_last
= false;
5688 bool ordered_set
= false;
5689 bool disjunct_set
= false;
5690 bool disj_matched
= false;
5691 bool disj_starred
= true;
5692 bool n_way_choice
= false;
5693 bool n_way_matched
= false;
5695 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5702 /* Scan one "atom" (S in the description above of %{}, possibly
5703 with '!', '.', '@', ',', or '*' modifiers). */
5705 a_is_suffix
= false;
5706 a_is_starred
= false;
5707 a_is_negated
= false;
5708 a_is_spectype
= false;
5712 p
++, a_is_negated
= true;
5716 p
++, a_is_suffix
= true;
5718 p
++, a_is_spectype
= true;
5721 while (ISIDNUM(*p
) || *p
== '-' || *p
== '+' || *p
== '='
5722 || *p
== ',' || *p
== '.' || *p
== '@')
5727 p
++, a_is_starred
= 1;
5733 /* Substitute the switch(es) indicated by the current atom. */
5735 if (disjunct_set
|| n_way_choice
|| a_is_negated
|| a_is_suffix
5736 || a_is_spectype
|| atom
== end_atom
)
5739 mark_matching_switches (atom
, end_atom
, a_is_starred
);
5742 process_marked_switches ();
5746 /* Substitute some text if the current atom appears as a switch
5748 disjunct_set
= true;
5752 if (atom
== end_atom
)
5754 if (!n_way_choice
|| disj_matched
|| *p
== '|'
5755 || a_is_negated
|| a_is_suffix
|| a_is_spectype
5759 /* An empty term may appear as the last choice of an
5760 N-way choice set; it means "otherwise". */
5761 a_must_be_last
= true;
5762 disj_matched
= !n_way_matched
;
5763 disj_starred
= false;
5767 if ((a_is_suffix
|| a_is_spectype
) && a_is_starred
)
5771 disj_starred
= false;
5773 /* Don't bother testing this atom if we already have a
5775 if (!disj_matched
&& !n_way_matched
)
5778 a_matched
= input_suffix_matches (atom
, end_atom
);
5779 else if (a_is_spectype
)
5780 a_matched
= input_spec_matches (atom
, end_atom
);
5782 a_matched
= switch_matches (atom
, end_atom
, a_is_starred
);
5784 if (a_matched
!= a_is_negated
)
5786 disj_matched
= true;
5788 d_end_atom
= end_atom
;
5795 /* Found the body, that is, the text to substitute if the
5796 current disjunction matches. */
5797 p
= process_brace_body (p
+ 1, d_atom
, d_end_atom
, disj_starred
,
5798 disj_matched
&& !n_way_matched
);
5802 /* If we have an N-way choice, reset state for the next
5806 n_way_choice
= true;
5807 n_way_matched
|= disj_matched
;
5808 disj_matched
= false;
5809 disj_starred
= true;
5810 d_atom
= d_end_atom
= NULL
;
5819 while (*p
++ != '}');
5824 fatal_error ("braced spec %qs is invalid at %qc", orig
, *p
);
5829 /* Subroutine of handle_braces. Scan and process a brace substitution body
5830 (X in the description of %{} syntax). P points one past the colon;
5831 ATOM and END_ATOM bracket the first atom which was found to be true
5832 (present) in the current disjunction; STARRED indicates whether all
5833 the atoms in the current disjunction were starred (for syntax validation);
5834 MATCHED indicates whether the disjunction matched or not, and therefore
5835 whether or not the body is to be processed through do_spec_1 or just
5836 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5840 process_brace_body (const char *p
, const char *atom
, const char *end_atom
,
5841 int starred
, int matched
)
5843 const char *body
, *end_body
;
5844 unsigned int nesting_level
;
5845 bool have_subst
= false;
5847 /* Locate the closing } or ;, honoring nested braces.
5848 Trim trailing whitespace. */
5857 if (!--nesting_level
)
5860 else if (*p
== ';' && nesting_level
== 1)
5862 else if (*p
== '%' && p
[1] == '*' && nesting_level
== 1)
5864 else if (*p
== '\0')
5870 while (end_body
[-1] == ' ' || end_body
[-1] == '\t')
5873 if (have_subst
&& !starred
)
5878 /* Copy the substitution body to permanent storage and execute it.
5879 If have_subst is false, this is a simple matter of running the
5880 body through do_spec_1... */
5881 char *string
= save_string (body
, end_body
- body
);
5884 if (do_spec_1 (string
, 0, NULL
) < 0)
5889 /* ... but if have_subst is true, we have to process the
5890 body once for each matching switch, with %* set to the
5891 variant part of the switch. */
5892 unsigned int hard_match_len
= end_atom
- atom
;
5895 for (i
= 0; i
< n_switches
; i
++)
5896 if (!strncmp (switches
[i
].part1
, atom
, hard_match_len
)
5897 && check_live_switch (i
, hard_match_len
))
5899 if (do_spec_1 (string
, 0,
5900 &switches
[i
].part1
[hard_match_len
]) < 0)
5902 /* Pass any arguments this switch has. */
5904 suffix_subst
= NULL
;
5912 fatal_error ("braced spec body %qs is invalid", body
);
5915 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5916 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5917 spec, or -1 if either exact match or %* is used.
5919 A -O switch is obsoleted by a later -O switch. A -f, -g, -m, or -W switch
5920 whose value does not begin with "no-" is obsoleted by the same value
5921 with the "no-", similarly for a switch with the "no-" prefix. */
5924 check_live_switch (int switchnum
, int prefix_length
)
5926 const char *name
= switches
[switchnum
].part1
;
5929 /* If we already processed this switch and determined if it was
5930 live or not, return our past determination. */
5931 if (switches
[switchnum
].live_cond
!= 0)
5932 return ((switches
[switchnum
].live_cond
& SWITCH_LIVE
) != 0
5933 && (switches
[switchnum
].live_cond
& SWITCH_FALSE
) == 0
5934 && (switches
[switchnum
].live_cond
& SWITCH_IGNORE_PERMANENTLY
)
5937 /* In the common case of {<at-most-one-letter>*}, a negating
5938 switch would always match, so ignore that case. We will just
5939 send the conflicting switches to the compiler phase. */
5940 if (prefix_length
>= 0 && prefix_length
<= 1)
5943 /* Now search for duplicate in a manner that depends on the name. */
5947 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
5948 if (switches
[i
].part1
[0] == 'O')
5950 switches
[switchnum
].validated
= true;
5951 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
5956 case 'W': case 'f': case 'm': case 'g':
5957 if (! strncmp (name
+ 1, "no-", 3))
5959 /* We have Xno-YYY, search for XYYY. */
5960 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
5961 if (switches
[i
].part1
[0] == name
[0]
5962 && ! strcmp (&switches
[i
].part1
[1], &name
[4]))
5964 /* --specs are validated with the validate_switches mechanism. */
5965 if (switches
[switchnum
].known
)
5966 switches
[switchnum
].validated
= true;
5967 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
5973 /* We have XYYY, search for Xno-YYY. */
5974 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
5975 if (switches
[i
].part1
[0] == name
[0]
5976 && switches
[i
].part1
[1] == 'n'
5977 && switches
[i
].part1
[2] == 'o'
5978 && switches
[i
].part1
[3] == '-'
5979 && !strcmp (&switches
[i
].part1
[4], &name
[1]))
5981 /* --specs are validated with the validate_switches mechanism. */
5982 if (switches
[switchnum
].known
)
5983 switches
[switchnum
].validated
= true;
5984 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
5991 /* Otherwise the switch is live. */
5992 switches
[switchnum
].live_cond
|= SWITCH_LIVE
;
5996 /* Pass a switch to the current accumulating command
5997 in the same form that we received it.
5998 SWITCHNUM identifies the switch; it is an index into
5999 the vector of switches gcc received, which is `switches'.
6000 This cannot fail since it never finishes a command line.
6002 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
6005 give_switch (int switchnum
, int omit_first_word
)
6007 if ((switches
[switchnum
].live_cond
& SWITCH_IGNORE
) != 0)
6010 if (!omit_first_word
)
6012 do_spec_1 ("-", 0, NULL
);
6013 do_spec_1 (switches
[switchnum
].part1
, 1, NULL
);
6016 if (switches
[switchnum
].args
!= 0)
6019 for (p
= switches
[switchnum
].args
; *p
; p
++)
6021 const char *arg
= *p
;
6023 do_spec_1 (" ", 0, NULL
);
6026 unsigned length
= strlen (arg
);
6029 while (length
-- && !IS_DIR_SEPARATOR (arg
[length
]))
6030 if (arg
[length
] == '.')
6032 (CONST_CAST(char *, arg
))[length
] = 0;
6036 do_spec_1 (arg
, 1, NULL
);
6038 (CONST_CAST(char *, arg
))[length
] = '.';
6039 do_spec_1 (suffix_subst
, 1, NULL
);
6042 do_spec_1 (arg
, 1, NULL
);
6046 do_spec_1 (" ", 0, NULL
);
6047 switches
[switchnum
].validated
= true;
6050 /* Search for a file named NAME trying various prefixes including the
6051 user's -B prefix and some standard ones.
6052 Return the absolute file name found. If nothing is found, return NAME. */
6055 find_file (const char *name
)
6057 char *newname
= find_a_file (&startfile_prefixes
, name
, R_OK
, true);
6058 return newname
? newname
: name
;
6061 /* Determine whether a directory exists. If LINKER, return 0 for
6062 certain fixed names not needed by the linker. */
6065 is_directory (const char *path1
, bool linker
)
6072 /* Ensure the string ends with "/.". The resulting path will be a
6073 directory even if the given path is a symbolic link. */
6074 len1
= strlen (path1
);
6075 path
= (char *) alloca (3 + len1
);
6076 memcpy (path
, path1
, len1
);
6078 if (!IS_DIR_SEPARATOR (cp
[-1]))
6079 *cp
++ = DIR_SEPARATOR
;
6083 /* Exclude directories that the linker is known to search. */
6085 && IS_DIR_SEPARATOR (path
[0])
6087 && filename_ncmp (path
+ 1, "lib", 3) == 0)
6089 && filename_ncmp (path
+ 1, "usr", 3) == 0
6090 && IS_DIR_SEPARATOR (path
[4])
6091 && filename_ncmp (path
+ 5, "lib", 3) == 0)))
6094 return (stat (path
, &st
) >= 0 && S_ISDIR (st
.st_mode
));
6097 /* Set up the various global variables to indicate that we're processing
6098 the input file named FILENAME. */
6101 set_input (const char *filename
)
6105 gcc_input_filename
= filename
;
6106 input_filename_length
= strlen (gcc_input_filename
);
6107 input_basename
= lbasename (gcc_input_filename
);
6109 /* Find a suffix starting with the last period,
6110 and set basename_length to exclude that suffix. */
6111 basename_length
= strlen (input_basename
);
6112 suffixed_basename_length
= basename_length
;
6113 p
= input_basename
+ basename_length
;
6114 while (p
!= input_basename
&& *p
!= '.')
6116 if (*p
== '.' && p
!= input_basename
)
6118 basename_length
= p
- input_basename
;
6119 input_suffix
= p
+ 1;
6124 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
6125 we will need to do a stat on the gcc_input_filename. The
6126 INPUT_STAT_SET signals that the stat is needed. */
6130 /* On fatal signals, delete all the temporary files. */
6133 fatal_signal (int signum
)
6135 signal (signum
, SIG_DFL
);
6136 delete_failure_queue ();
6137 delete_temp_files ();
6138 /* Get the same signal again, this time not handled,
6139 so its normal effect occurs. */
6140 kill (getpid (), signum
);
6143 /* Compare the contents of the two files named CMPFILE[0] and
6144 CMPFILE[1]. Return zero if they're identical, nonzero
6148 compare_files (char *cmpfile
[])
6151 FILE *temp
[2] = { NULL
, NULL
};
6157 void *map
[2] = { NULL
, NULL
};
6159 for (i
= 0; i
< 2; i
++)
6163 if (stat (cmpfile
[i
], &st
) < 0 || !S_ISREG (st
.st_mode
))
6165 error ("%s: could not determine length of compare-debug file %s",
6166 gcc_input_filename
, cmpfile
[i
]);
6171 length
[i
] = st
.st_size
;
6174 if (!ret
&& length
[0] != length
[1])
6176 error ("%s: -fcompare-debug failure (length)", gcc_input_filename
);
6181 for (i
= 0; i
< 2; i
++)
6183 int fd
= open (cmpfile
[i
], O_RDONLY
);
6186 error ("%s: could not open compare-debug file %s",
6187 gcc_input_filename
, cmpfile
[i
]);
6192 map
[i
] = mmap (NULL
, length
[i
], PROT_READ
, MAP_PRIVATE
, fd
, 0);
6195 if (map
[i
] == (void *) MAP_FAILED
)
6204 if (memcmp (map
[0], map
[1], length
[0]) != 0)
6206 error ("%s: -fcompare-debug failure", gcc_input_filename
);
6211 for (i
= 0; i
< 2; i
++)
6213 munmap ((caddr_t
) map
[i
], length
[i
]);
6222 for (i
= 0; i
< 2; i
++)
6224 temp
[i
] = fopen (cmpfile
[i
], "r");
6227 error ("%s: could not open compare-debug file %s",
6228 gcc_input_filename
, cmpfile
[i
]);
6234 if (!ret
&& temp
[0] && temp
[1])
6238 c0
= fgetc (temp
[0]);
6239 c1
= fgetc (temp
[1]);
6243 error ("%s: -fcompare-debug failure",
6244 gcc_input_filename
);
6253 for (i
= 1; i
>= 0; i
--)
6262 extern int main (int, char **);
6265 main (int argc
, char **argv
)
6269 int linker_was_run
= 0;
6270 int lang_n_infiles
= 0;
6271 int num_linker_inputs
= 0;
6272 char *explicit_link_files
;
6274 char *lto_wrapper_file
;
6276 struct user_specs
*uptr
;
6277 char **old_argv
= argv
;
6278 struct cl_decoded_option
*decoded_options
;
6279 unsigned int decoded_options_count
;
6281 p
= argv
[0] + strlen (argv
[0]);
6282 while (p
!= argv
[0] && !IS_DIR_SEPARATOR (p
[-1]))
6286 xmalloc_set_program_name (progname
);
6288 expandargv (&argc
, &argv
);
6290 /* Determine if any expansions were made. */
6291 if (argv
!= old_argv
)
6292 at_file_supplied
= true;
6294 /* Register the language-independent parameters. */
6295 global_init_params ();
6298 init_options_struct (&global_options
, &global_options_set
);
6300 decode_cmdline_options_to_array (argc
, CONST_CAST2 (const char **, char **,
6303 &decoded_options
, &decoded_options_count
);
6305 /* Unlock the stdio streams. */
6306 unlock_std_streams ();
6308 gcc_init_libintl ();
6310 diagnostic_initialize (global_dc
, 0);
6312 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6313 /* Perform host dependent initialization when needed. */
6314 GCC_DRIVER_HOST_INITIALIZATION
;
6317 if (atexit (delete_temp_files
) != 0)
6318 fatal_error ("atexit failed");
6320 if (signal (SIGINT
, SIG_IGN
) != SIG_IGN
)
6321 signal (SIGINT
, fatal_signal
);
6323 if (signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
6324 signal (SIGHUP
, fatal_signal
);
6326 if (signal (SIGTERM
, SIG_IGN
) != SIG_IGN
)
6327 signal (SIGTERM
, fatal_signal
);
6329 if (signal (SIGPIPE
, SIG_IGN
) != SIG_IGN
)
6330 signal (SIGPIPE
, fatal_signal
);
6333 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6334 receive the signal. A different setting is inheritable */
6335 signal (SIGCHLD
, SIG_DFL
);
6338 /* Parsing and gimplification sometimes need quite large stack.
6339 Increase stack size limits if possible. */
6340 stack_limit_increase (64 * 1024 * 1024);
6342 /* Allocate the argument vector. */
6345 obstack_init (&obstack
);
6347 /* Build multilib_select, et. al from the separate lines that make up each
6348 multilib selection. */
6350 const char *const *q
= multilib_raw
;
6353 obstack_init (&multilib_obstack
);
6354 while ((p
= *q
++) != (char *) 0)
6355 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6357 obstack_1grow (&multilib_obstack
, 0);
6358 multilib_select
= XOBFINISH (&multilib_obstack
, const char *);
6360 q
= multilib_matches_raw
;
6361 while ((p
= *q
++) != (char *) 0)
6362 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6364 obstack_1grow (&multilib_obstack
, 0);
6365 multilib_matches
= XOBFINISH (&multilib_obstack
, const char *);
6367 q
= multilib_exclusions_raw
;
6368 while ((p
= *q
++) != (char *) 0)
6369 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6371 obstack_1grow (&multilib_obstack
, 0);
6372 multilib_exclusions
= XOBFINISH (&multilib_obstack
, const char *);
6374 q
= multilib_reuse_raw
;
6375 while ((p
= *q
++) != (char *) 0)
6376 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6378 obstack_1grow (&multilib_obstack
, 0);
6379 multilib_reuse
= XOBFINISH (&multilib_obstack
, const char *);
6382 for (i
= 0; i
< ARRAY_SIZE (multilib_defaults_raw
); i
++)
6385 obstack_1grow (&multilib_obstack
, ' ');
6386 obstack_grow (&multilib_obstack
,
6387 multilib_defaults_raw
[i
],
6388 strlen (multilib_defaults_raw
[i
]));
6392 obstack_1grow (&multilib_obstack
, 0);
6393 multilib_defaults
= XOBFINISH (&multilib_obstack
, const char *);
6396 #ifdef INIT_ENVIRONMENT
6397 /* Set up any other necessary machine specific environment variables. */
6398 xputenv (INIT_ENVIRONMENT
);
6401 /* Make a table of what switches there are (switches, n_switches).
6402 Make a table of specified input files (infiles, n_infiles).
6403 Decode switches that are handled locally. */
6405 process_command (decoded_options_count
, decoded_options
);
6407 /* Initialize the vector of specs to just the default.
6408 This means one element containing 0s, as a terminator. */
6410 compilers
= XNEWVAR (struct compiler
, sizeof default_compilers
);
6411 memcpy (compilers
, default_compilers
, sizeof default_compilers
);
6412 n_compilers
= n_default_compilers
;
6414 /* Read specs from a file if there is one. */
6416 machine_suffix
= concat (spec_machine
, dir_separator_str
,
6417 spec_version
, dir_separator_str
, NULL
);
6418 just_machine_suffix
= concat (spec_machine
, dir_separator_str
, NULL
);
6420 specs_file
= find_a_file (&startfile_prefixes
, "specs", R_OK
, true);
6421 /* Read the specs file unless it is a default one. */
6422 if (specs_file
!= 0 && strcmp (specs_file
, "specs"))
6423 read_specs (specs_file
, true, false);
6427 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6428 for any override of as, ld and libraries. */
6429 specs_file
= (char *) alloca (strlen (standard_exec_prefix
)
6430 + strlen (just_machine_suffix
) + sizeof ("specs"));
6432 strcpy (specs_file
, standard_exec_prefix
);
6433 strcat (specs_file
, just_machine_suffix
);
6434 strcat (specs_file
, "specs");
6435 if (access (specs_file
, R_OK
) == 0)
6436 read_specs (specs_file
, true, false);
6438 /* Process any configure-time defaults specified for the command line
6439 options, via OPTION_DEFAULT_SPECS. */
6440 for (i
= 0; i
< ARRAY_SIZE (option_default_specs
); i
++)
6441 do_option_spec (option_default_specs
[i
].name
,
6442 option_default_specs
[i
].spec
);
6444 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6445 of the command line. */
6447 for (i
= 0; i
< ARRAY_SIZE (driver_self_specs
); i
++)
6448 do_self_spec (driver_self_specs
[i
]);
6450 /* If not cross-compiling, look for executables in the standard
6452 if (*cross_compile
== '0')
6454 if (*md_exec_prefix
)
6456 add_prefix (&exec_prefixes
, md_exec_prefix
, "GCC",
6457 PREFIX_PRIORITY_LAST
, 0, 0);
6461 /* Process sysroot_suffix_spec. */
6462 if (*sysroot_suffix_spec
!= 0
6463 && !no_sysroot_suffix
6464 && do_spec_2 (sysroot_suffix_spec
) == 0)
6466 if (argbuf
.length () > 1)
6467 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6468 else if (argbuf
.length () == 1)
6469 target_sysroot_suffix
= xstrdup (argbuf
.last ());
6472 #ifdef HAVE_LD_SYSROOT
6473 /* Pass the --sysroot option to the linker, if it supports that. If
6474 there is a sysroot_suffix_spec, it has already been processed by
6475 this point, so target_system_root really is the system root we
6477 if (target_system_root
)
6479 obstack_grow (&obstack
, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6480 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
6481 set_spec ("link", XOBFINISH (&obstack
, const char *), false);
6485 /* Process sysroot_hdrs_suffix_spec. */
6486 if (*sysroot_hdrs_suffix_spec
!= 0
6487 && !no_sysroot_suffix
6488 && do_spec_2 (sysroot_hdrs_suffix_spec
) == 0)
6490 if (argbuf
.length () > 1)
6491 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6492 else if (argbuf
.length () == 1)
6493 target_sysroot_hdrs_suffix
= xstrdup (argbuf
.last ());
6496 /* Look for startfiles in the standard places. */
6497 if (*startfile_prefix_spec
!= 0
6498 && do_spec_2 (startfile_prefix_spec
) == 0
6499 && do_spec_1 (" ", 0, NULL
) == 0)
6503 FOR_EACH_VEC_ELT (argbuf
, ndx
, arg
)
6504 add_sysrooted_prefix (&startfile_prefixes
, arg
, "BINUTILS",
6505 PREFIX_PRIORITY_LAST
, 0, 1);
6507 /* We should eventually get rid of all these and stick to
6508 startfile_prefix_spec exclusively. */
6509 else if (*cross_compile
== '0' || target_system_root
)
6511 if (*md_startfile_prefix
)
6512 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix
,
6513 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
6515 if (*md_startfile_prefix_1
)
6516 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix_1
,
6517 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
6519 /* If standard_startfile_prefix is relative, base it on
6520 standard_exec_prefix. This lets us move the installed tree
6521 as a unit. If GCC_EXEC_PREFIX is defined, base
6522 standard_startfile_prefix on that as well.
6524 If the prefix is relative, only search it for native compilers;
6525 otherwise we will search a directory containing host libraries. */
6526 if (IS_ABSOLUTE_PATH (standard_startfile_prefix
))
6527 add_sysrooted_prefix (&startfile_prefixes
,
6528 standard_startfile_prefix
, "BINUTILS",
6529 PREFIX_PRIORITY_LAST
, 0, 1);
6530 else if (*cross_compile
== '0')
6532 add_prefix (&startfile_prefixes
,
6533 concat (gcc_exec_prefix
6534 ? gcc_exec_prefix
: standard_exec_prefix
,
6536 standard_startfile_prefix
, NULL
),
6537 NULL
, PREFIX_PRIORITY_LAST
, 0, 1);
6540 /* Sysrooted prefixes are relocated because target_system_root is
6541 also relocated by gcc_exec_prefix. */
6542 if (*standard_startfile_prefix_1
)
6543 add_sysrooted_prefix (&startfile_prefixes
,
6544 standard_startfile_prefix_1
, "BINUTILS",
6545 PREFIX_PRIORITY_LAST
, 0, 1);
6546 if (*standard_startfile_prefix_2
)
6547 add_sysrooted_prefix (&startfile_prefixes
,
6548 standard_startfile_prefix_2
, "BINUTILS",
6549 PREFIX_PRIORITY_LAST
, 0, 1);
6552 /* Process any user specified specs in the order given on the command
6554 for (uptr
= user_specs_head
; uptr
; uptr
= uptr
->next
)
6556 char *filename
= find_a_file (&startfile_prefixes
, uptr
->filename
,
6558 read_specs (filename
? filename
: uptr
->filename
, false, true);
6561 /* Process any user self specs. */
6563 struct spec_list
*sl
;
6564 for (sl
= specs
; sl
; sl
= sl
->next
)
6565 if (sl
->name_len
== sizeof "self_spec" - 1
6566 && !strcmp (sl
->name
, "self_spec"))
6567 do_self_spec (*sl
->ptr_spec
);
6572 enum save_temps save
;
6574 if (!compare_debug_second
)
6576 n_switches_debug_check
[1] = n_switches
;
6577 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
6578 switches_debug_check
[1] = XDUPVEC (struct switchstr
, switches
,
6581 do_self_spec ("%:compare-debug-self-opt()");
6582 n_switches_debug_check
[0] = n_switches
;
6583 n_switches_alloc_debug_check
[0] = n_switches_alloc
;
6584 switches_debug_check
[0] = switches
;
6586 n_switches
= n_switches_debug_check
[1];
6587 n_switches_alloc
= n_switches_alloc_debug_check
[1];
6588 switches
= switches_debug_check
[1];
6591 /* Avoid crash when computing %j in this early. */
6592 save
= save_temps_flag
;
6593 save_temps_flag
= SAVE_TEMPS_NONE
;
6595 compare_debug
= -compare_debug
;
6596 do_self_spec ("%:compare-debug-self-opt()");
6598 save_temps_flag
= save
;
6600 if (!compare_debug_second
)
6602 n_switches_debug_check
[1] = n_switches
;
6603 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
6604 switches_debug_check
[1] = switches
;
6605 compare_debug
= -compare_debug
;
6606 n_switches
= n_switches_debug_check
[0];
6607 n_switches_alloc
= n_switches_debug_check
[0];
6608 switches
= switches_debug_check
[0];
6613 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6614 if (gcc_exec_prefix
)
6615 gcc_exec_prefix
= concat (gcc_exec_prefix
, spec_machine
, dir_separator_str
,
6616 spec_version
, dir_separator_str
, NULL
);
6618 /* Now we have the specs.
6619 Set the `valid' bits for switches that match anything in any spec. */
6621 validate_all_switches ();
6623 /* Now that we have the switches and the specs, set
6624 the subdirectory based on the options. */
6625 set_multilib_dir ();
6627 /* Set up to remember the pathname of gcc and any options
6628 needed for collect. We use argv[0] instead of progname because
6629 we need the complete pathname. */
6630 obstack_init (&collect_obstack
);
6631 obstack_grow (&collect_obstack
, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6632 obstack_grow (&collect_obstack
, argv
[0], strlen (argv
[0]) + 1);
6633 xputenv (XOBFINISH (&collect_obstack
, char *));
6635 /* Set up to remember the pathname of the lto wrapper. */
6638 lto_wrapper_file
= NULL
;
6640 lto_wrapper_file
= find_a_file (&exec_prefixes
, "lto-wrapper",
6642 if (lto_wrapper_file
)
6644 lto_wrapper_spec
= lto_wrapper_file
;
6645 obstack_init (&collect_obstack
);
6646 obstack_grow (&collect_obstack
, "COLLECT_LTO_WRAPPER=",
6647 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
6648 obstack_grow (&collect_obstack
, lto_wrapper_spec
,
6649 strlen (lto_wrapper_spec
) + 1);
6650 xputenv (XOBFINISH (&collect_obstack
, char *));
6653 /* Reject switches that no pass was interested in. */
6655 for (i
= 0; (int) i
< n_switches
; i
++)
6656 if (! switches
[i
].validated
)
6657 error ("unrecognized command line option %<-%s%>", switches
[i
].part1
);
6659 /* Obey some of the options. */
6661 if (print_search_dirs
)
6663 printf (_("install: %s%s\n"),
6664 gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
6665 gcc_exec_prefix
? "" : machine_suffix
);
6666 printf (_("programs: %s\n"),
6667 build_search_list (&exec_prefixes
, "", false, false));
6668 printf (_("libraries: %s\n"),
6669 build_search_list (&startfile_prefixes
, "", false, true));
6673 if (print_file_name
)
6675 printf ("%s\n", find_file (print_file_name
));
6679 if (print_prog_name
)
6681 char *newname
= find_a_file (&exec_prefixes
, print_prog_name
, X_OK
, 0);
6682 printf ("%s\n", (newname
? newname
: print_prog_name
));
6686 if (print_multi_lib
)
6688 print_multilib_info ();
6692 if (print_multi_directory
)
6694 if (multilib_dir
== NULL
)
6697 printf ("%s\n", multilib_dir
);
6701 if (print_multiarch
)
6703 if (multiarch_dir
== NULL
)
6706 printf ("%s\n", multiarch_dir
);
6712 if (target_system_root
)
6714 if (target_sysroot_suffix
)
6715 printf ("%s%s\n", target_system_root
, target_sysroot_suffix
);
6717 printf ("%s\n", target_system_root
);
6722 if (print_multi_os_directory
)
6724 if (multilib_os_dir
== NULL
)
6727 printf ("%s\n", multilib_os_dir
);
6731 if (print_sysroot_headers_suffix
)
6733 if (*sysroot_hdrs_suffix_spec
)
6735 printf("%s\n", (target_sysroot_hdrs_suffix
6736 ? target_sysroot_hdrs_suffix
6741 /* The error status indicates that only one set of fixed
6742 headers should be built. */
6743 fatal_error ("not configured with sysroot headers suffix");
6746 if (print_help_list
)
6752 printf (_("\nFor bug reporting instructions, please see:\n"));
6753 printf ("%s.\n", bug_report_url
);
6758 /* We do not exit here. Instead we have created a fake input file
6759 called 'help-dummy' which needs to be compiled, and we pass this
6760 on the various sub-processes, along with the --help switch.
6761 Ensure their output appears after ours. */
6762 fputc ('\n', stdout
);
6768 printf (_("%s %s%s\n"), progname
, pkgversion_string
,
6770 printf ("Copyright %s 2013 Free Software Foundation, Inc.\n",
6772 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
6773 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
6778 /* We do not exit here. We use the same mechanism of --help to print
6779 the version of the sub-processes. */
6780 fputc ('\n', stdout
);
6789 fnotice (stderr
, "Target: %s\n", spec_machine
);
6790 fnotice (stderr
, "Configured with: %s\n", configuration_arguments
);
6792 #ifdef THREAD_MODEL_SPEC
6793 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6794 but there's no point in doing all this processing just to get
6795 thread_model back. */
6796 obstack_init (&obstack
);
6797 do_spec_1 (THREAD_MODEL_SPEC
, 0, thread_model
);
6798 obstack_1grow (&obstack
, '\0');
6799 thrmod
= XOBFINISH (&obstack
, const char *);
6801 thrmod
= thread_model
;
6804 fnotice (stderr
, "Thread model: %s\n", thrmod
);
6806 /* compiler_version is truncated at the first space when initialized
6807 from version string, so truncate version_string at the first space
6808 before comparing. */
6809 for (n
= 0; version_string
[n
]; n
++)
6810 if (version_string
[n
] == ' ')
6813 if (! strncmp (version_string
, compiler_version
, n
)
6814 && compiler_version
[n
] == 0)
6815 fnotice (stderr
, "gcc version %s %s\n", version_string
,
6818 fnotice (stderr
, "gcc driver version %s %sexecuting gcc version %s\n",
6819 version_string
, pkgversion_string
, compiler_version
);
6825 if (n_infiles
== added_libraries
)
6826 fatal_error ("no input files");
6831 /* Make a place to record the compiler output file names
6832 that correspond to the input files. */
6835 i
+= lang_specific_extra_outfiles
;
6836 outfiles
= XCNEWVEC (const char *, i
);
6838 /* Record which files were specified explicitly as link input. */
6840 explicit_link_files
= XCNEWVEC (char, n_infiles
);
6842 combine_inputs
= have_o
|| flag_wpa
;
6844 for (i
= 0; (int) i
< n_infiles
; i
++)
6846 const char *name
= infiles
[i
].name
;
6847 struct compiler
*compiler
= lookup_compiler (name
,
6849 infiles
[i
].language
);
6851 if (compiler
&& !(compiler
->combinable
))
6852 combine_inputs
= false;
6854 if (lang_n_infiles
> 0 && compiler
!= input_file_compiler
6855 && infiles
[i
].language
&& infiles
[i
].language
[0] != '*')
6856 infiles
[i
].incompiler
= compiler
;
6860 input_file_compiler
= compiler
;
6861 infiles
[i
].incompiler
= compiler
;
6865 /* Since there is no compiler for this input file, assume it is a
6867 explicit_link_files
[i
] = 1;
6868 infiles
[i
].incompiler
= NULL
;
6870 infiles
[i
].compiled
= false;
6871 infiles
[i
].preprocessed
= false;
6874 if (!combine_inputs
&& have_c
&& have_o
&& lang_n_infiles
> 1)
6875 fatal_error ("cannot specify -o with -c, -S or -E with multiple files");
6877 for (i
= 0; (int) i
< n_infiles
; i
++)
6879 int this_file_error
= 0;
6881 /* Tell do_spec what to substitute for %i. */
6883 input_file_number
= i
;
6884 set_input (infiles
[i
].name
);
6886 if (infiles
[i
].compiled
)
6889 /* Use the same thing in %o, unless cp->spec says otherwise. */
6891 outfiles
[i
] = gcc_input_filename
;
6893 /* Figure out which compiler from the file's suffix. */
6896 = lookup_compiler (infiles
[i
].name
, input_filename_length
,
6897 infiles
[i
].language
);
6899 if (input_file_compiler
)
6901 /* Ok, we found an applicable compiler. Run its spec. */
6903 if (input_file_compiler
->spec
[0] == '#')
6905 error ("%s: %s compiler not installed on this system",
6906 gcc_input_filename
, &input_file_compiler
->spec
[1]);
6907 this_file_error
= 1;
6913 free (debug_check_temp_file
[0]);
6914 debug_check_temp_file
[0] = NULL
;
6916 free (debug_check_temp_file
[1]);
6917 debug_check_temp_file
[1] = NULL
;
6920 value
= do_spec (input_file_compiler
->spec
);
6921 infiles
[i
].compiled
= true;
6923 this_file_error
= 1;
6924 else if (compare_debug
&& debug_check_temp_file
[0])
6927 inform (0, "recompiling with -fcompare-debug");
6929 compare_debug
= -compare_debug
;
6930 n_switches
= n_switches_debug_check
[1];
6931 n_switches_alloc
= n_switches_alloc_debug_check
[1];
6932 switches
= switches_debug_check
[1];
6934 value
= do_spec (input_file_compiler
->spec
);
6936 compare_debug
= -compare_debug
;
6937 n_switches
= n_switches_debug_check
[0];
6938 n_switches_alloc
= n_switches_alloc_debug_check
[0];
6939 switches
= switches_debug_check
[0];
6943 error ("during -fcompare-debug recompilation");
6944 this_file_error
= 1;
6947 gcc_assert (debug_check_temp_file
[1]
6948 && filename_cmp (debug_check_temp_file
[0],
6949 debug_check_temp_file
[1]));
6952 inform (0, "comparing final insns dumps");
6954 if (compare_files (debug_check_temp_file
))
6955 this_file_error
= 1;
6960 free (debug_check_temp_file
[0]);
6961 debug_check_temp_file
[0] = NULL
;
6963 free (debug_check_temp_file
[1]);
6964 debug_check_temp_file
[1] = NULL
;
6969 /* If this file's name does not contain a recognized suffix,
6970 record it as explicit linker input. */
6973 explicit_link_files
[i
] = 1;
6975 /* Clear the delete-on-failure queue, deleting the files in it
6976 if this compilation failed. */
6978 if (this_file_error
)
6980 delete_failure_queue ();
6983 /* If this compilation succeeded, don't delete those files later. */
6984 clear_failure_queue ();
6987 /* Reset the input file name to the first compile/object file name, for use
6988 with %b in LINK_SPEC. We use the first input file that we can find
6989 a compiler to compile it instead of using infiles.language since for
6990 languages other than C we use aliases that we then lookup later. */
6995 for (i
= 0; i
< n_infiles
; i
++)
6996 if (infiles
[i
].incompiler
6997 || (infiles
[i
].language
&& infiles
[i
].language
[0] != '*'))
6999 set_input (infiles
[i
].name
);
7006 /* Make sure INPUT_FILE_NUMBER points to first available open
7008 input_file_number
= n_infiles
;
7009 if (lang_specific_pre_link ())
7013 /* Determine if there are any linker input files. */
7014 num_linker_inputs
= 0;
7015 for (i
= 0; (int) i
< n_infiles
; i
++)
7016 if (explicit_link_files
[i
] || outfiles
[i
] != NULL
)
7017 num_linker_inputs
++;
7019 /* Run ld to link all the compiler output files. */
7021 if (num_linker_inputs
> 0 && !seen_error () && print_subprocess_help
< 2)
7023 int tmp
= execution_count
;
7027 #if HAVE_LTO_PLUGIN > 0
7028 #if HAVE_LTO_PLUGIN == 2
7029 const char *fno_use_linker_plugin
= "fno-use-linker-plugin";
7031 const char *fuse_linker_plugin
= "fuse-linker-plugin";
7035 /* We'll use ld if we can't find collect2. */
7036 if (! strcmp (linker_name_spec
, "collect2"))
7038 char *s
= find_a_file (&exec_prefixes
, "collect2", X_OK
, false);
7040 linker_name_spec
= "ld";
7043 #if HAVE_LTO_PLUGIN > 0
7044 #if HAVE_LTO_PLUGIN == 2
7045 if (!switch_matches (fno_use_linker_plugin
,
7046 fno_use_linker_plugin
7047 + strlen (fno_use_linker_plugin
), 0))
7049 if (switch_matches (fuse_linker_plugin
,
7051 + strlen (fuse_linker_plugin
), 0))
7054 linker_plugin_file_spec
= find_a_file (&exec_prefixes
,
7055 LTOPLUGINSONAME
, R_OK
,
7057 if (!linker_plugin_file_spec
)
7058 fatal_error ("-fuse-linker-plugin, but %s not found",
7062 lto_gcc_spec
= argv
[0];
7065 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
7067 putenv_from_prefixes (&exec_prefixes
, "COMPILER_PATH", false);
7068 putenv_from_prefixes (&startfile_prefixes
, LIBRARY_PATH_ENV
, true);
7070 if (print_subprocess_help
== 1)
7072 printf (_("\nLinker options\n==============\n\n"));
7073 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
7074 " to the linker.\n\n"));
7077 value
= do_spec (link_command_spec
);
7080 linker_was_run
= (tmp
!= execution_count
);
7083 /* If options said don't run linker,
7084 complain about input files to be given to the linker. */
7086 if (! linker_was_run
&& !seen_error ())
7087 for (i
= 0; (int) i
< n_infiles
; i
++)
7088 if (explicit_link_files
[i
]
7089 && !(infiles
[i
].language
&& infiles
[i
].language
[0] == '*'))
7090 warning (0, "%s: linker input file unused because linking not done",
7093 /* Delete some or all of the temporary files we made. */
7096 delete_failure_queue ();
7097 delete_temp_files ();
7099 if (print_help_list
)
7101 printf (("\nFor bug reporting instructions, please see:\n"));
7102 printf ("%s\n", bug_report_url
);
7106 return (signal_count
!= 0 ? 2
7107 : seen_error () ? (pass_exit_codes
? greatest_status
: 1)
7111 /* Find the proper compilation spec for the file name NAME,
7112 whose length is LENGTH. LANGUAGE is the specified language,
7113 or 0 if this file is to be passed to the linker. */
7115 static struct compiler
*
7116 lookup_compiler (const char *name
, size_t length
, const char *language
)
7118 struct compiler
*cp
;
7120 /* If this was specified by the user to be a linker input, indicate that. */
7121 if (language
!= 0 && language
[0] == '*')
7124 /* Otherwise, look for the language, if one is spec'd. */
7127 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7128 if (cp
->suffix
[0] == '@' && !strcmp (cp
->suffix
+ 1, language
))
7131 error ("language %s not recognized", language
);
7135 /* Look for a suffix. */
7136 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7138 if (/* The suffix `-' matches only the file name `-'. */
7139 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
7140 || (strlen (cp
->suffix
) < length
7141 /* See if the suffix matches the end of NAME. */
7142 && !strcmp (cp
->suffix
,
7143 name
+ length
- strlen (cp
->suffix
))
7148 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
7149 /* Look again, but case-insensitively this time. */
7151 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7153 if (/* The suffix `-' matches only the file name `-'. */
7154 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
7155 || (strlen (cp
->suffix
) < length
7156 /* See if the suffix matches the end of NAME. */
7157 && ((!strcmp (cp
->suffix
,
7158 name
+ length
- strlen (cp
->suffix
))
7159 || !strpbrk (cp
->suffix
, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
7160 && !strcasecmp (cp
->suffix
,
7161 name
+ length
- strlen (cp
->suffix
)))
7167 if (cp
>= compilers
)
7169 if (cp
->spec
[0] != '@')
7170 /* A non-alias entry: return it. */
7173 /* An alias entry maps a suffix to a language.
7174 Search for the language; pass 0 for NAME and LENGTH
7175 to avoid infinite recursion if language not found. */
7176 return lookup_compiler (NULL
, 0, cp
->spec
+ 1);
7182 save_string (const char *s
, int len
)
7184 char *result
= XNEWVEC (char, len
+ 1);
7186 memcpy (result
, s
, len
);
7192 pfatal_with_name (const char *name
)
7194 perror_with_name (name
);
7195 delete_temp_files ();
7200 perror_with_name (const char *name
)
7202 error ("%s: %m", name
);
7206 validate_switches_from_spec (const char *spec
, bool user
)
7208 const char *p
= spec
;
7211 if (c
== '%' && (*p
== '{' || *p
== '<' || (*p
== 'W' && *++p
== '{')))
7212 /* We have a switch spec. */
7213 p
= validate_switches (p
+ 1, user
);
7217 validate_all_switches (void)
7219 struct compiler
*comp
;
7220 struct spec_list
*spec
;
7222 for (comp
= compilers
; comp
->spec
; comp
++)
7223 validate_switches_from_spec (comp
->spec
, false);
7225 /* Look through the linked list of specs read from the specs file. */
7226 for (spec
= specs
; spec
; spec
= spec
->next
)
7227 validate_switches_from_spec (*spec
->ptr_spec
, spec
->user_p
);
7229 validate_switches_from_spec (link_command_spec
, false);
7232 /* Look at the switch-name that comes after START
7233 and mark as valid all supplied switches that match it. */
7236 validate_switches (const char *start
, bool user_spec
)
7238 const char *p
= start
;
7242 bool suffix
= false;
7243 bool starred
= false;
7245 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7254 if (*p
== '.' || *p
== ',')
7258 while (ISIDNUM (*p
) || *p
== '-' || *p
== '+' || *p
== '='
7259 || *p
== ',' || *p
== '.' || *p
== '@')
7264 starred
= true, p
++;
7270 /* Mark all matching switches as valid. */
7271 for (i
= 0; i
< n_switches
; i
++)
7272 if (!strncmp (switches
[i
].part1
, atom
, len
)
7273 && (starred
|| switches
[i
].part1
[len
] == '\0')
7274 && (switches
[i
].known
|| user_spec
))
7275 switches
[i
].validated
= true;
7279 if (*p
&& (p
[-1] == '|' || p
[-1] == '&'))
7282 if (*p
&& p
[-1] == ':')
7284 while (*p
&& *p
!= ';' && *p
!= '}')
7289 if (*p
== '{' || *p
== '<')
7290 p
= validate_switches (p
+1, user_spec
);
7291 else if (p
[0] == 'W' && p
[1] == '{')
7292 p
= validate_switches (p
+2, user_spec
);
7299 if (*p
&& p
[-1] == ';')
7313 static struct mdswitchstr
*mdswitches
;
7314 static int n_mdswitches
;
7316 /* Check whether a particular argument was used. The first time we
7317 canonicalize the switches to keep only the ones we care about. */
7320 used_arg (const char *p
, int len
)
7325 const char *replace
;
7330 static struct mswitchstr
*mswitches
;
7331 static int n_mswitches
;
7336 struct mswitchstr
*matches
;
7340 /* Break multilib_matches into the component strings of string
7341 and replacement string. */
7342 for (q
= multilib_matches
; *q
!= '\0'; q
++)
7347 = (struct mswitchstr
*) alloca ((sizeof (struct mswitchstr
)) * cnt
);
7349 q
= multilib_matches
;
7358 fatal_error ("multilib spec %qs is invalid",
7363 matches
[i
].len
= q
- matches
[i
].str
;
7365 matches
[i
].replace
= ++q
;
7366 while (*q
!= ';' && *q
!= '\0')
7369 goto invalid_matches
;
7372 matches
[i
].rep_len
= q
- matches
[i
].replace
;
7378 /* Now build a list of the replacement string for switches that we care
7379 about. Make sure we allocate at least one entry. This prevents
7380 xmalloc from calling fatal, and prevents us from re-executing this
7383 = XNEWVEC (struct mswitchstr
, n_mdswitches
+ (n_switches
? n_switches
: 1));
7384 for (i
= 0; i
< n_switches
; i
++)
7385 if ((switches
[i
].live_cond
& SWITCH_IGNORE
) == 0)
7387 int xlen
= strlen (switches
[i
].part1
);
7388 for (j
= 0; j
< cnt
; j
++)
7389 if (xlen
== matches
[j
].len
7390 && ! strncmp (switches
[i
].part1
, matches
[j
].str
, xlen
))
7392 mswitches
[n_mswitches
].str
= matches
[j
].replace
;
7393 mswitches
[n_mswitches
].len
= matches
[j
].rep_len
;
7394 mswitches
[n_mswitches
].replace
= (char *) 0;
7395 mswitches
[n_mswitches
].rep_len
= 0;
7401 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7402 on the command line nor any options mutually incompatible with
7404 for (i
= 0; i
< n_mdswitches
; i
++)
7408 for (q
= multilib_options
; *q
!= '\0'; q
++)
7414 while (strncmp (q
, mdswitches
[i
].str
, mdswitches
[i
].len
) != 0
7415 || strchr (" /", q
[mdswitches
[i
].len
]) == NULL
)
7417 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
7424 if (*q
!= ' ' && *q
!= '\0')
7426 while (*r
!= ' ' && *r
!= '\0')
7429 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
7432 if (used_arg (r
, q
- r
))
7437 mswitches
[n_mswitches
].str
= mdswitches
[i
].str
;
7438 mswitches
[n_mswitches
].len
= mdswitches
[i
].len
;
7439 mswitches
[n_mswitches
].replace
= (char *) 0;
7440 mswitches
[n_mswitches
].rep_len
= 0;
7453 for (i
= 0; i
< n_mswitches
; i
++)
7454 if (len
== mswitches
[i
].len
&& ! strncmp (p
, mswitches
[i
].str
, len
))
7461 default_arg (const char *p
, int len
)
7465 for (i
= 0; i
< n_mdswitches
; i
++)
7466 if (len
== mdswitches
[i
].len
&& ! strncmp (p
, mdswitches
[i
].str
, len
))
7472 /* Work out the subdirectory to use based on the options. The format of
7473 multilib_select is a list of elements. Each element is a subdirectory
7474 name followed by a list of options followed by a semicolon. The format
7475 of multilib_exclusions is the same, but without the preceding
7476 directory. First gcc will check the exclusions, if none of the options
7477 beginning with an exclamation point are present, and all of the other
7478 options are present, then we will ignore this completely. Passing
7479 that, gcc will consider each multilib_select in turn using the same
7480 rules for matching the options. If a match is found, that subdirectory
7482 A subdirectory name is optionally followed by a colon and the corresponding
7486 set_multilib_dir (void)
7489 unsigned int this_path_len
;
7490 const char *this_path
, *this_arg
;
7491 const char *start
, *end
;
7493 int ok
, ndfltok
, first
;
7496 start
= multilib_defaults
;
7497 while (*start
== ' ' || *start
== '\t')
7499 while (*start
!= '\0')
7502 while (*start
!= ' ' && *start
!= '\t' && *start
!= '\0')
7504 while (*start
== ' ' || *start
== '\t')
7512 mdswitches
= XNEWVEC (struct mdswitchstr
, n_mdswitches
);
7513 for (start
= multilib_defaults
; *start
!= '\0'; start
= end
+ 1)
7515 while (*start
== ' ' || *start
== '\t')
7521 for (end
= start
+ 1;
7522 *end
!= ' ' && *end
!= '\t' && *end
!= '\0'; end
++)
7525 obstack_grow (&multilib_obstack
, start
, end
- start
);
7526 obstack_1grow (&multilib_obstack
, 0);
7527 mdswitches
[i
].str
= XOBFINISH (&multilib_obstack
, const char *);
7528 mdswitches
[i
++].len
= end
- start
;
7535 p
= multilib_exclusions
;
7538 /* Ignore newlines. */
7545 /* Check the arguments. */
7552 fatal_error ("multilib exclusions %qs is invalid",
7553 multilib_exclusions
);
7563 while (*p
!= ' ' && *p
!= ';')
7566 goto invalid_exclusions
;
7570 if (*this_arg
!= '!')
7578 ok
= used_arg (this_arg
, p
- this_arg
);
7593 p
= multilib_select
;
7595 /* Append multilib reuse rules if any. With those rules, we can reuse
7596 one multilib for certain different options sets. */
7597 if (strlen (multilib_reuse
) > 0)
7598 p
= concat (p
, multilib_reuse
, NULL
);
7602 /* Ignore newlines. */
7609 /* Get the initial path. */
7616 fatal_error ("multilib select %qs %qs is invalid",
7617 multilib_select
, multilib_reuse
);
7621 this_path_len
= p
- this_path
;
7623 /* Check the arguments. */
7630 goto invalid_select
;
7639 while (*p
!= ' ' && *p
!= ';')
7642 goto invalid_select
;
7646 if (*this_arg
!= '!')
7654 /* If this is a default argument, we can just ignore it.
7655 This is true even if this_arg begins with '!'. Beginning
7656 with '!' does not mean that this argument is necessarily
7657 inappropriate for this library: it merely means that
7658 there is a more specific library which uses this
7659 argument. If this argument is a default, we need not
7660 consider that more specific library. */
7661 ok
= used_arg (this_arg
, p
- this_arg
);
7668 if (default_arg (this_arg
, p
- this_arg
))
7677 if (this_path_len
!= 1
7678 || this_path
[0] != '.')
7680 char *new_multilib_dir
= XNEWVEC (char, this_path_len
+ 1);
7683 strncpy (new_multilib_dir
, this_path
, this_path_len
);
7684 new_multilib_dir
[this_path_len
] = '\0';
7685 q
= strchr (new_multilib_dir
, ':');
7688 multilib_dir
= new_multilib_dir
;
7695 const char *q
= this_path
, *end
= this_path
+ this_path_len
;
7697 while (q
< end
&& *q
!= ':')
7701 const char *q2
= q
+ 1, *ml_end
= end
;
7702 char *new_multilib_os_dir
;
7704 while (q2
< end
&& *q2
!= ':')
7708 new_multilib_os_dir
= XNEWVEC (char, ml_end
- q
);
7709 memcpy (new_multilib_os_dir
, q
+ 1, ml_end
- q
- 1);
7710 new_multilib_os_dir
[ml_end
- q
- 1] = '\0';
7711 multilib_os_dir
= *new_multilib_os_dir
? new_multilib_os_dir
: ".";
7713 if (q2
< end
&& *q2
== ':')
7715 char *new_multiarch_dir
= XNEWVEC (char, end
- q2
);
7716 memcpy (new_multiarch_dir
, q2
+ 1, end
- q2
- 1);
7717 new_multiarch_dir
[end
- q2
- 1] = '\0';
7718 multiarch_dir
= new_multiarch_dir
;
7727 if (multilib_dir
== NULL
&& multilib_os_dir
!= NULL
7728 && strcmp (multilib_os_dir
, ".") == 0)
7730 free (CONST_CAST (char *, multilib_os_dir
));
7731 multilib_os_dir
= NULL
;
7733 else if (multilib_dir
!= NULL
&& multilib_os_dir
== NULL
)
7734 multilib_os_dir
= multilib_dir
;
7737 /* Print out the multiple library subdirectory selection
7738 information. This prints out a series of lines. Each line looks
7739 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7740 required. Only the desired options are printed out, the negative
7741 matches. The options are print without a leading dash. There are
7742 no spaces to make it easy to use the information in the shell.
7743 Each subdirectory is printed only once. This assumes the ordering
7744 generated by the genmultilib script. Also, we leave out ones that match
7748 print_multilib_info (void)
7750 const char *p
= multilib_select
;
7751 const char *last_path
= 0, *this_path
;
7753 unsigned int last_path_len
= 0;
7758 /* Ignore newlines. */
7765 /* Get the initial path. */
7772 fatal_error ("multilib select %qs is invalid", multilib_select
);
7778 /* When --disable-multilib was used but target defines
7779 MULTILIB_OSDIRNAMES, entries starting with .: (and not starting
7780 with .:: for multiarch configurations) are there just to find
7781 multilib_os_dir, so skip them from output. */
7782 if (this_path
[0] == '.' && this_path
[1] == ':' && this_path
[2] != ':')
7785 /* Check for matches with the multilib_exclusions. We don't bother
7786 with the '!' in either list. If any of the exclusion rules match
7787 all of its options with the select rule, we skip it. */
7789 const char *e
= multilib_exclusions
;
7790 const char *this_arg
;
7795 /* Ignore newlines. */
7802 /* Check the arguments. */
7811 fatal_error ("multilib exclusion %qs is invalid",
7812 multilib_exclusions
);
7823 while (*e
!= ' ' && *e
!= ';')
7826 goto invalid_exclusion
;
7834 int len
= e
- this_arg
;
7837 goto invalid_select
;
7841 while (*q
!= ' ' && *q
!= ';')
7844 goto invalid_select
;
7848 if (! strncmp (arg
, this_arg
,
7849 (len
< q
- arg
) ? q
- arg
: len
)
7850 || default_arg (this_arg
, e
- this_arg
))
7880 /* If this is a duplicate, skip it. */
7881 skip
= (last_path
!= 0
7882 && (unsigned int) (p
- this_path
) == last_path_len
7883 && ! filename_ncmp (last_path
, this_path
, last_path_len
));
7885 last_path
= this_path
;
7886 last_path_len
= p
- this_path
;
7889 /* If this directory requires any default arguments, we can skip
7890 it. We will already have printed a directory identical to
7891 this one which does not require that default argument. */
7902 goto invalid_select
;
7909 while (*q
!= ' ' && *q
!= ';')
7912 goto invalid_select
;
7917 && default_arg (arg
, q
- arg
))
7932 for (p1
= last_path
; p1
< p
&& *p1
!= ':'; p1
++)
7943 goto invalid_select
;
7951 use_arg
= *p
!= '!';
7956 while (*p
!= ' ' && *p
!= ';')
7959 goto invalid_select
;
7971 /* If there are extra options, print them now. */
7972 if (multilib_extra
&& *multilib_extra
)
7974 int print_at
= TRUE
;
7977 for (q
= multilib_extra
; *q
!= '\0'; q
++)
7998 /* getenv built-in spec function.
8000 Returns the value of the environment variable given by its first
8001 argument, concatenated with the second argument. If the
8002 environment variable is not defined, a fatal error is issued. */
8005 getenv_spec_function (int argc
, const char **argv
)
8015 value
= getenv (argv
[0]);
8017 fatal_error ("environment variable %qs not defined", argv
[0]);
8019 /* We have to escape every character of the environment variable so
8020 they are not interpreted as active spec characters. A
8021 particularly painful case is when we are reading a variable
8022 holding a windows path complete with \ separators. */
8023 len
= strlen (value
) * 2 + strlen (argv
[1]) + 1;
8024 result
= XNEWVAR (char, len
);
8025 for (ptr
= result
; *value
; ptr
+= 2)
8031 strcpy (ptr
, argv
[1]);
8036 /* if-exists built-in spec function.
8038 Checks to see if the file specified by the absolute pathname in
8039 ARGS exists. Returns that pathname if found.
8041 The usual use for this function is to check for a library file
8042 (whose name has been expanded with %s). */
8045 if_exists_spec_function (int argc
, const char **argv
)
8047 /* Must have only one argument. */
8048 if (argc
== 1 && IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
8054 /* if-exists-else built-in spec function.
8056 This is like if-exists, but takes an additional argument which
8057 is returned if the first argument does not exist. */
8060 if_exists_else_spec_function (int argc
, const char **argv
)
8062 /* Must have exactly two arguments. */
8066 if (IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
8072 /* replace-outfile built-in spec function.
8074 This looks for the first argument in the outfiles array's name and
8075 replaces it with the second argument. */
8078 replace_outfile_spec_function (int argc
, const char **argv
)
8081 /* Must have exactly two arguments. */
8085 for (i
= 0; i
< n_infiles
; i
++)
8087 if (outfiles
[i
] && !filename_cmp (outfiles
[i
], argv
[0]))
8088 outfiles
[i
] = xstrdup (argv
[1]);
8093 /* remove-outfile built-in spec function.
8095 * This looks for the first argument in the outfiles array's name and
8099 remove_outfile_spec_function (int argc
, const char **argv
)
8102 /* Must have exactly one argument. */
8106 for (i
= 0; i
< n_infiles
; i
++)
8108 if (outfiles
[i
] && !filename_cmp (outfiles
[i
], argv
[0]))
8114 /* Given two version numbers, compares the two numbers.
8115 A version number must match the regular expression
8116 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
8119 compare_version_strings (const char *v1
, const char *v2
)
8124 if (regcomp (&r
, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
8125 REG_EXTENDED
| REG_NOSUB
) != 0)
8127 rresult
= regexec (&r
, v1
, 0, NULL
, 0);
8128 if (rresult
== REG_NOMATCH
)
8129 fatal_error ("invalid version number %qs", v1
);
8130 else if (rresult
!= 0)
8132 rresult
= regexec (&r
, v2
, 0, NULL
, 0);
8133 if (rresult
== REG_NOMATCH
)
8134 fatal_error ("invalid version number %qs", v2
);
8135 else if (rresult
!= 0)
8138 return strverscmp (v1
, v2
);
8142 /* version_compare built-in spec function.
8144 This takes an argument of the following form:
8146 <comparison-op> <arg1> [<arg2>] <switch> <result>
8148 and produces "result" if the comparison evaluates to true,
8149 and nothing if it doesn't.
8151 The supported <comparison-op> values are:
8153 >= true if switch is a later (or same) version than arg1
8155 < true if switch is an earlier version than arg1
8157 >< true if switch is arg1 or later, and earlier than arg2
8158 <> true if switch is earlier than arg1 or is arg2 or later
8160 If the switch is not present, the condition is false unless
8161 the first character of the <comparison-op> is '!'.
8164 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
8165 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
8168 version_compare_spec_function (int argc
, const char **argv
)
8172 const char *switch_value
= NULL
;
8177 fatal_error ("too few arguments to %%:version-compare");
8178 if (argv
[0][0] == '\0')
8180 if ((argv
[0][1] == '<' || argv
[0][1] == '>') && argv
[0][0] != '!')
8182 if (argc
!= nargs
+ 3)
8183 fatal_error ("too many arguments to %%:version-compare");
8185 switch_len
= strlen (argv
[nargs
+ 1]);
8186 for (i
= 0; i
< n_switches
; i
++)
8187 if (!strncmp (switches
[i
].part1
, argv
[nargs
+ 1], switch_len
)
8188 && check_live_switch (i
, switch_len
))
8189 switch_value
= switches
[i
].part1
+ switch_len
;
8191 if (switch_value
== NULL
)
8195 comp1
= compare_version_strings (switch_value
, argv
[1]);
8197 comp2
= compare_version_strings (switch_value
, argv
[2]);
8199 comp2
= -1; /* This value unused. */
8202 switch (argv
[0][0] << 8 | argv
[0][1])
8204 case '>' << 8 | '=':
8205 result
= comp1
>= 0;
8207 case '!' << 8 | '<':
8208 result
= comp1
>= 0 || switch_value
== NULL
;
8213 case '!' << 8 | '>':
8214 result
= comp1
< 0 || switch_value
== NULL
;
8216 case '>' << 8 | '<':
8217 result
= comp1
>= 0 && comp2
< 0;
8219 case '<' << 8 | '>':
8220 result
= comp1
< 0 || comp2
>= 0;
8224 fatal_error ("unknown operator %qs in %%:version-compare", argv
[0]);
8229 return argv
[nargs
+ 2];
8232 /* %:include builtin spec function. This differs from %include in that it
8233 can be nested inside a spec, and thus be conditionalized. It takes
8234 one argument, the filename, and looks for it in the startfile path.
8235 The result is always NULL, i.e. an empty expansion. */
8238 include_spec_function (int argc
, const char **argv
)
8245 file
= find_a_file (&startfile_prefixes
, argv
[0], R_OK
, true);
8246 read_specs (file
? file
: argv
[0], false, false);
8251 /* %:find-file spec function. This function replaces its argument by
8252 the file found through find_file, that is the -print-file-name gcc
8255 find_file_spec_function (int argc
, const char **argv
)
8262 file
= find_file (argv
[0]);
8267 /* %:find-plugindir spec function. This function replaces its argument
8268 by the -iplugindir=<dir> option. `dir' is found through find_file, that
8269 is the -print-file-name gcc program option. */
8271 find_plugindir_spec_function (int argc
, const char **argv ATTRIBUTE_UNUSED
)
8278 option
= concat ("-iplugindir=", find_file ("plugin"), NULL
);
8283 /* %:print-asm-header spec function. Print a banner to say that the
8284 following output is from the assembler. */
8287 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED
,
8288 const char **argv ATTRIBUTE_UNUSED
)
8290 printf (_("Assembler options\n=================\n\n"));
8291 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
8296 /* Get a random number for -frandom-seed */
8298 static unsigned HOST_WIDE_INT
8299 get_random_number (void)
8301 unsigned HOST_WIDE_INT ret
= 0;
8304 fd
= open ("/dev/urandom", O_RDONLY
);
8307 read (fd
, &ret
, sizeof (HOST_WIDE_INT
));
8313 /* Get some more or less random data. */
8314 #ifdef HAVE_GETTIMEOFDAY
8318 gettimeofday (&tv
, NULL
);
8319 ret
= tv
.tv_sec
* 1000 + tv
.tv_usec
/ 1000;
8323 time_t now
= time (NULL
);
8325 if (now
!= (time_t)-1)
8326 ret
= (unsigned) now
;
8330 return ret
^ getpid();
8333 /* %:compare-debug-dump-opt spec function. Save the last argument,
8334 expected to be the last -fdump-final-insns option, or generate a
8338 compare_debug_dump_opt_spec_function (int arg
,
8339 const char **argv ATTRIBUTE_UNUSED
)
8344 static char random_seed
[HOST_BITS_PER_WIDE_INT
/ 4 + 3];
8347 fatal_error ("too many arguments to %%:compare-debug-dump-opt");
8349 do_spec_2 ("%{fdump-final-insns=*:%*}");
8350 do_spec_1 (" ", 0, NULL
);
8352 if (argbuf
.length () > 0
8353 && strcmp (argv
[argbuf
.length () - 1], "."))
8358 name
= xstrdup (argv
[argbuf
.length () - 1]);
8363 const char *ext
= NULL
;
8365 if (argbuf
.length () > 0)
8367 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
8370 else if (!compare_debug
)
8373 do_spec_2 ("%g.gkd");
8375 do_spec_1 (" ", 0, NULL
);
8377 gcc_assert (argbuf
.length () > 0);
8379 name
= concat (argbuf
.last (), ext
, NULL
);
8381 ret
= concat ("-fdump-final-insns=", name
, NULL
);
8384 which
= compare_debug
< 0;
8385 debug_check_temp_file
[which
] = name
;
8389 unsigned HOST_WIDE_INT value
= get_random_number ();
8391 sprintf (random_seed
, HOST_WIDE_INT_PRINT_HEX
, value
);
8397 ret
= concat ("%{!frandom-seed=*:-frandom-seed=", random_seed
, "} ",
8408 static const char *debug_auxbase_opt
;
8410 /* %:compare-debug-self-opt spec function. Expands to the options
8411 that are to be passed in the second compilation of
8415 compare_debug_self_opt_spec_function (int arg
,
8416 const char **argv ATTRIBUTE_UNUSED
)
8419 fatal_error ("too many arguments to %%:compare-debug-self-opt");
8421 if (compare_debug
>= 0)
8424 do_spec_2 ("%{c|S:%{o*:%*}}");
8425 do_spec_1 (" ", 0, NULL
);
8427 if (argbuf
.length () > 0)
8428 debug_auxbase_opt
= concat ("-auxbase-strip ",
8432 debug_auxbase_opt
= NULL
;
8435 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
8436 %<fdump-final-insns=* -w -S -o %j \
8437 %{!fcompare-debug-second:-fcompare-debug-second} \
8438 ", compare_debug_opt
, NULL
);
8441 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
8442 options that are to be passed in the second compilation of
8443 compare-debug. It expects, as an argument, the basename of the
8444 current input file name, with the .gk suffix appended to it. */
8447 compare_debug_auxbase_opt_spec_function (int arg
,
8454 fatal_error ("too few arguments to %%:compare-debug-auxbase-opt");
8457 fatal_error ("too many arguments to %%:compare-debug-auxbase-opt");
8459 if (compare_debug
>= 0)
8462 len
= strlen (argv
[0]);
8463 if (len
< 3 || strcmp (argv
[0] + len
- 3, ".gk") != 0)
8464 fatal_error ("argument to %%:compare-debug-auxbase-opt "
8465 "does not end in .gk");
8467 if (debug_auxbase_opt
)
8468 return debug_auxbase_opt
;
8470 #define OPT "-auxbase "
8473 name
= (char*) xmalloc (sizeof (OPT
) + len
);
8474 memcpy (name
, OPT
, sizeof (OPT
) - 1);
8475 memcpy (name
+ sizeof (OPT
) - 1, argv
[0], len
);
8476 name
[sizeof (OPT
) - 1 + len
] = '\0';
8483 /* %:pass-through-libs spec function. Finds all -l options and input
8484 file names in the lib spec passed to it, and makes a list of them
8485 prepended with the plugin option to cause them to be passed through
8486 to the final link after all the new object files have been added. */
8489 pass_through_libs_spec_func (int argc
, const char **argv
)
8491 char *prepended
= xstrdup (" ");
8493 /* Shlemiel the painter's algorithm. Innately horrible, but at least
8494 we know that there will never be more than a handful of strings to
8495 concat, and it's only once per run, so it's not worth optimising. */
8496 for (n
= 0; n
< argc
; n
++)
8498 char *old
= prepended
;
8499 /* Anything that isn't an option is a full path to an output
8500 file; pass it through if it ends in '.a'. Among options,
8502 if (argv
[n
][0] == '-' && argv
[n
][1] == 'l')
8504 const char *lopt
= argv
[n
] + 2;
8505 /* Handle both joined and non-joined -l options. If for any
8506 reason there's a trailing -l with no joined or following
8507 arg just discard it. */
8508 if (!*lopt
&& ++n
>= argc
)
8512 prepended
= concat (prepended
, "-plugin-opt=-pass-through=-l",
8515 else if (!strcmp (".a", argv
[n
] + strlen (argv
[n
]) - 2))
8517 prepended
= concat (prepended
, "-plugin-opt=-pass-through=",
8518 argv
[n
], " ", NULL
);
8520 if (prepended
!= old
)
8526 /* %:replace-extension spec function. Replaces the extension of the
8527 first argument with the second argument. */
8530 replace_extension_spec_func (int argc
, const char **argv
)
8538 fatal_error ("too few arguments to %%:replace-extension");
8540 name
= xstrdup (argv
[0]);
8542 for (i
= strlen(name
) - 1; i
>= 0; i
--)
8543 if (IS_DIR_SEPARATOR (name
[i
]))
8546 p
= strrchr (name
+ i
+ 1, '.');
8550 result
= concat (name
, argv
[1], NULL
);