1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987-2014 Free Software Foundation, Inc.
4 This file is part of GCC.
6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 3, or (at your option) any later
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING3. If not see
18 <http://www.gnu.org/licenses/>. */
20 /* This program is the user interface to the C compiler and possibly to
21 other compilers. It is used because compilation is a complicated procedure
22 which involves running several programs and passing temporary files between
23 them, forwarding the users switches to those programs selectively,
24 and deleting the temporary files at the end.
26 CC recognizes how to compile each input file by suffixes in the file names.
27 Once it knows which kind of compilation to perform, the procedure for
28 compilation is specified by a string called a "spec". */
32 #include "coretypes.h"
33 #include "multilib.h" /* before tm.h */
40 #include "diagnostic.h"
45 #include "filenames.h"
47 /* By default there is no special suffix for target executables. */
48 /* FIXME: when autoconf is fixed, remove the host check - dj */
49 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
50 #define HAVE_TARGET_EXECUTABLE_SUFFIX
53 /* By default there is no special suffix for host executables. */
54 #ifdef HOST_EXECUTABLE_SUFFIX
55 #define HAVE_HOST_EXECUTABLE_SUFFIX
57 #define HOST_EXECUTABLE_SUFFIX ""
60 /* By default, the suffix for target object files is ".o". */
61 #ifdef TARGET_OBJECT_SUFFIX
62 #define HAVE_TARGET_OBJECT_SUFFIX
64 #define TARGET_OBJECT_SUFFIX ".o"
67 static const char dir_separator_str
[] = { DIR_SEPARATOR
, 0 };
69 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
70 #ifndef LIBRARY_PATH_ENV
71 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
74 /* If a stage of compilation returns an exit status >= 1,
75 compilation of that file ceases. */
77 #define MIN_FATAL_STATUS 1
79 /* Flag set by cppspec.c to 1. */
82 /* Flag set to nonzero if an @file argument has been supplied to gcc. */
83 static bool at_file_supplied
;
85 /* Definition of string containing the arguments given to configure. */
86 #include "configargs.h"
88 /* Flag saying to print the command line options understood by gcc and its
91 static int print_help_list
;
93 /* Flag saying to print the version of gcc and its sub-processes. */
95 static int print_version
;
97 /* Flag indicating whether we should ONLY print the command and
98 arguments (like verbose_flag) without executing the command.
99 Displayed arguments are quoted so that the generated command
100 line is suitable for execution. This is intended for use in
101 shell scripts to capture the driver-generated command line. */
102 static int verbose_only_flag
;
104 /* Flag indicating how to print command line options of sub-processes. */
106 static int print_subprocess_help
;
108 /* Linker suffix passed to -fuse-ld=... */
109 static const char *use_ld
;
111 /* Whether we should report subprocess execution times to a file. */
113 FILE *report_times_to_file
= NULL
;
115 /* Nonzero means place this string before uses of /, so that include
116 and library files can be found in an alternate location. */
118 #ifdef TARGET_SYSTEM_ROOT
119 static const char *target_system_root
= TARGET_SYSTEM_ROOT
;
121 static const char *target_system_root
= 0;
124 /* Nonzero means pass the updated target_system_root to the compiler. */
126 static int target_system_root_changed
;
128 /* Nonzero means append this string to target_system_root. */
130 static const char *target_sysroot_suffix
= 0;
132 /* Nonzero means append this string to target_system_root for headers. */
134 static const char *target_sysroot_hdrs_suffix
= 0;
136 /* Nonzero means write "temp" files in source directory
137 and use the source file's name in them, and don't delete them. */
139 static enum save_temps
{
140 SAVE_TEMPS_NONE
, /* no -save-temps */
141 SAVE_TEMPS_CWD
, /* -save-temps in current directory */
142 SAVE_TEMPS_OBJ
/* -save-temps in object directory */
145 /* Output file to use to get the object directory for -save-temps=obj */
146 static char *save_temps_prefix
= 0;
147 static size_t save_temps_length
= 0;
149 /* The compiler version. */
151 static const char *compiler_version
;
153 /* The target version. */
155 static const char *const spec_version
= DEFAULT_TARGET_VERSION
;
157 /* The target machine. */
159 static const char *spec_machine
= DEFAULT_TARGET_MACHINE
;
160 static const char *spec_host_machine
= DEFAULT_REAL_TARGET_MACHINE
;
162 /* Nonzero if cross-compiling.
163 When -b is used, the value comes from the `specs' file. */
165 #ifdef CROSS_DIRECTORY_STRUCTURE
166 static const char *cross_compile
= "1";
168 static const char *cross_compile
= "0";
171 /* Greatest exit code of sub-processes that has been encountered up to
173 static int greatest_status
= 1;
175 /* This is the obstack which we use to allocate many strings. */
177 static struct obstack obstack
;
179 /* This is the obstack to build an environment variable to pass to
180 collect2 that describes all of the relevant switches of what to
181 pass the compiler in building the list of pointers to constructors
184 static struct obstack collect_obstack
;
186 /* Forward declaration for prototypes. */
190 static void init_spec (void);
191 static void store_arg (const char *, int, int);
192 static void insert_wrapper (const char *);
193 static char *load_specs (const char *);
194 static void read_specs (const char *, bool, bool);
195 static void set_spec (const char *, const char *, bool);
196 static struct compiler
*lookup_compiler (const char *, size_t, const char *);
197 static char *build_search_list (const struct path_prefix
*, const char *,
199 static void xputenv (const char *);
200 static void putenv_from_prefixes (const struct path_prefix
*, const char *,
202 static int access_check (const char *, int);
203 static char *find_a_file (const struct path_prefix
*, const char *, int, bool);
204 static void add_prefix (struct path_prefix
*, const char *, const char *,
206 static void add_sysrooted_prefix (struct path_prefix
*, const char *,
207 const char *, int, int, int);
208 static char *skip_whitespace (char *);
209 static void delete_if_ordinary (const char *);
210 static void delete_temp_files (void);
211 static void delete_failure_queue (void);
212 static void clear_failure_queue (void);
213 static int check_live_switch (int, int);
214 static const char *handle_braces (const char *);
215 static inline bool input_suffix_matches (const char *, const char *);
216 static inline bool switch_matches (const char *, const char *, int);
217 static inline void mark_matching_switches (const char *, const char *, int);
218 static inline void process_marked_switches (void);
219 static const char *process_brace_body (const char *, const char *, const char *, int, int);
220 static const struct spec_function
*lookup_spec_function (const char *);
221 static const char *eval_spec_function (const char *, const char *);
222 static const char *handle_spec_function (const char *, bool *);
223 static char *save_string (const char *, int);
224 static void set_collect_gcc_options (void);
225 static int do_spec_1 (const char *, int, const char *);
226 static int do_spec_2 (const char *);
227 static void do_option_spec (const char *, const char *);
228 static void do_self_spec (const char *);
229 static const char *find_file (const char *);
230 static int is_directory (const char *, bool);
231 static const char *validate_switches (const char *, bool);
232 static void validate_all_switches (void);
233 static inline void validate_switches_from_spec (const char *, bool);
234 static void give_switch (int, int);
235 static int used_arg (const char *, int);
236 static int default_arg (const char *, int);
237 static void set_multilib_dir (void);
238 static void print_multilib_info (void);
239 static void perror_with_name (const char *);
240 static void display_help (void);
241 static void add_preprocessor_option (const char *, int);
242 static void add_assembler_option (const char *, int);
243 static void add_linker_option (const char *, int);
244 static void process_command (unsigned int, struct cl_decoded_option
*);
245 static int execute (void);
246 static void alloc_args (void);
247 static void clear_args (void);
248 static void fatal_signal (int);
249 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
250 static void init_gcc_specs (struct obstack
*, const char *, const char *,
253 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
254 static const char *convert_filename (const char *, int, int);
257 static const char *getenv_spec_function (int, const char **);
258 static const char *if_exists_spec_function (int, const char **);
259 static const char *if_exists_else_spec_function (int, const char **);
260 static const char *sanitize_spec_function (int, const char **);
261 static const char *replace_outfile_spec_function (int, const char **);
262 static const char *remove_outfile_spec_function (int, const char **);
263 static const char *version_compare_spec_function (int, const char **);
264 static const char *include_spec_function (int, const char **);
265 static const char *find_file_spec_function (int, const char **);
266 static const char *find_plugindir_spec_function (int, const char **);
267 static const char *print_asm_header_spec_function (int, const char **);
268 static const char *compare_debug_dump_opt_spec_function (int, const char **);
269 static const char *compare_debug_self_opt_spec_function (int, const char **);
270 static const char *compare_debug_auxbase_opt_spec_function (int, const char **);
271 static const char *pass_through_libs_spec_func (int, const char **);
272 static const char *replace_extension_spec_func (int, const char **);
273 static char *convert_white_space (char *);
275 /* The Specs Language
277 Specs are strings containing lines, each of which (if not blank)
278 is made up of a program name, and arguments separated by spaces.
279 The program name must be exact and start from root, since no path
280 is searched and it is unreliable to depend on the current working directory.
281 Redirection of input or output is not supported; the subprograms must
282 accept filenames saying what files to read and write.
284 In addition, the specs can contain %-sequences to substitute variable text
285 or for conditional text. Here is a table of all defined %-sequences.
286 Note that spaces are not generated automatically around the results of
287 expanding these sequences; therefore, you can concatenate them together
288 or with constant text in a single argument.
290 %% substitute one % into the program name or argument.
291 %i substitute the name of the input file being processed.
292 %b substitute the basename of the input file being processed.
293 This is the substring up to (and not including) the last period
294 and not including the directory unless -save-temps was specified
295 to put temporaries in a different location.
296 %B same as %b, but include the file suffix (text after the last period).
298 substitute a file name that has suffix SUFFIX and is chosen
299 once per compilation, and mark the argument a la %d. To reduce
300 exposure to denial-of-service attacks, the file name is now
301 chosen in a way that is hard to predict even when previously
302 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
303 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
304 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
305 had been pre-processed. Previously, %g was simply substituted
306 with a file name chosen once per compilation, without regard
307 to any appended suffix (which was therefore treated just like
308 ordinary text), making such attacks more likely to succeed.
310 like %g, but if -pipe is in effect, expands simply to "-".
312 like %g, but if -pipe is in effect, expands to nothing. (We have both
313 %| and %m to accommodate differences between system assemblers; see
314 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
316 like %g, but generates a new temporary file name even if %uSUFFIX
319 substitutes the last file name generated with %uSUFFIX, generating a
320 new one if there is no such last file name. In the absence of any
321 %uSUFFIX, this is just like %gSUFFIX, except they don't share
322 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
323 would involve the generation of two distinct file names, one
324 for each `%g.s' and another for each `%U.s'. Previously, %U was
325 simply substituted with a file name chosen for the previous %u,
326 without regard to any appended suffix.
328 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
329 writable, and if save-temps is off; otherwise, substitute the name
330 of a temporary file, just like %u. This temporary file is not
331 meant for communication between processes, but rather as a junk
334 substitutes .SUFFIX for the suffixes of a matched switch's args when
335 it is subsequently output with %*. SUFFIX is terminated by the next
337 %d marks the argument containing or following the %d as a
338 temporary file name, so that that file will be deleted if GCC exits
339 successfully. Unlike %g, this contributes no text to the argument.
340 %w marks the argument containing or following the %w as the
341 "output file" of this compilation. This puts the argument
342 into the sequence of arguments that %o will substitute later.
343 %V indicates that this compilation produces no "output file".
345 like %{...} but mark last argument supplied within
346 as a file to be deleted on failure.
347 %o substitutes the names of all the output files, with spaces
348 automatically placed around them. You should write spaces
349 around the %o as well or the results are undefined.
350 %o is for use in the specs for running the linker.
351 Input files whose names have no recognized suffix are not compiled
352 at all, but they are included among the output files, so they will
354 %O substitutes the suffix for object files. Note that this is
355 handled specially when it immediately follows %g, %u, or %U
356 (with or without a suffix argument) because of the need for
357 those to form complete file names. The handling is such that
358 %O is treated exactly as if it had already been substituted,
359 except that %g, %u, and %U do not currently support additional
360 SUFFIX characters following %O as they would following, for
362 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
363 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
364 and -B options) and -imultilib as necessary.
365 %s current argument is the name of a library or startup file of some sort.
366 Search for that file in a standard list of directories
367 and substitute the full name found.
368 %eSTR Print STR as an error message. STR is terminated by a newline.
369 Use this when inconsistent options are detected.
370 %nSTR Print STR as a notice. STR is terminated by a newline.
371 %x{OPTION} Accumulate an option for %X.
372 %X Output the accumulated linker options specified by compilations.
373 %Y Output the accumulated assembler options specified by compilations.
374 %Z Output the accumulated preprocessor options specified by compilations.
375 %a process ASM_SPEC as a spec.
376 This allows config.h to specify part of the spec for running as.
377 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
378 used here. This can be used to run a post-processor after the
379 assembler has done its job.
380 %D Dump out a -L option for each directory in startfile_prefixes.
381 If multilib_dir is set, extra entries are generated with it affixed.
382 %l process LINK_SPEC as a spec.
383 %L process LIB_SPEC as a spec.
384 %M Output multilib_os_dir.
385 %G process LIBGCC_SPEC as a spec.
386 %R Output the concatenation of target_system_root and
387 target_sysroot_suffix.
388 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
389 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
390 %C process CPP_SPEC as a spec.
391 %1 process CC1_SPEC as a spec.
392 %2 process CC1PLUS_SPEC as a spec.
393 %* substitute the variable part of a matched option. (See below.)
394 Note that each comma in the substituted string is replaced by
395 a single space. A space is appended after the last substition
396 unless there is more text in current sequence.
397 %<S remove all occurrences of -S from the command line.
398 Note - this command is position dependent. % commands in the
399 spec string before this one will see -S, % commands in the
400 spec string after this one will not.
401 %>S Similar to "%<S", but keep it in the GCC command line.
402 %<S* remove all occurrences of all switches beginning with -S from the
405 Call the named function FUNCTION, passing it ARGS. ARGS is
406 first processed as a nested spec string, then split into an
407 argument vector in the usual fashion. The function returns
408 a string which is processed as if it had appeared literally
409 as part of the current spec.
410 %{S} substitutes the -S switch, if that switch was given to GCC.
411 If that switch was not specified, this substitutes nothing.
412 Here S is a metasyntactic variable.
413 %{S*} substitutes all the switches specified to GCC whose names start
414 with -S. This is used for -o, -I, etc; switches that take
415 arguments. GCC considers `-o foo' as being one switch whose
416 name starts with `o'. %{o*} would substitute this text,
417 including the space; thus, two arguments would be generated.
418 %{S*&T*} likewise, but preserve order of S and T options (the order
419 of S and T in the spec is not significant). Can be any number
420 of ampersand-separated variables; for each the wild card is
421 optional. Useful for CPP as %{D*&U*&A*}.
423 %{S:X} substitutes X, if the -S switch was given to GCC.
424 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
425 %{S*:X} substitutes X if one or more switches whose names start
426 with -S was given to GCC. Normally X is substituted only
427 once, no matter how many such switches appeared. However,
428 if %* appears somewhere in X, then X will be substituted
429 once for each matching switch, with the %* replaced by the
430 part of that switch that matched the '*'. A space will be
431 appended after the last substition unless there is more
432 text in current sequence.
433 %{.S:X} substitutes X, if processing a file with suffix S.
434 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
435 %{,S:X} substitutes X, if processing a file which will use spec S.
436 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
438 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
439 combined with '!', '.', ',', and '*' as above binding stronger
441 If %* appears in X, all of the alternatives must be starred, and
442 only the first matching alternative is substituted.
443 %{%:function(args):X}
444 Call function named FUNCTION with args ARGS. If the function
445 returns non-NULL, then X is substituted, if it returns
446 NULL, it isn't substituted.
447 %{S:X; if S was given to GCC, substitutes X;
448 T:Y; else if T was given to GCC, substitutes Y;
449 :D} else substitutes D. There can be as many clauses as you need.
450 This may be combined with '.', '!', ',', '|', and '*' as above.
452 %(Spec) processes a specification defined in a specs file as *Spec:
454 The conditional text X in a %{S:X} or similar construct may contain
455 other nested % constructs or spaces, or even newlines. They are
456 processed as usual, as described above. Trailing white space in X is
457 ignored. White space may also appear anywhere on the left side of the
458 colon in these constructs, except between . or * and the corresponding
461 The -O, -f, -g, -m, and -W switches are handled specifically in these
462 constructs. If another value of -O or the negated form of a -f, -m, or
463 -W switch is found later in the command line, the earlier switch
464 value is ignored, except with {S*} where S is just one letter; this
465 passes all matching options.
467 The character | at the beginning of the predicate text is used to indicate
468 that a command should be piped to the following command, but only if -pipe
471 Note that it is built into GCC which switches take arguments and which
472 do not. You might think it would be useful to generalize this to
473 allow each compiler's spec to say which switches take arguments. But
474 this cannot be done in a consistent fashion. GCC cannot even decide
475 which input files have been specified without knowing which switches
476 take arguments, and it must know which input files to compile in order
477 to tell which compilers to run.
479 GCC also knows implicitly that arguments starting in `-l' are to be
480 treated as compiler output files, and passed to the linker in their
481 proper position among the other output files. */
483 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
485 /* config.h can define ASM_SPEC to provide extra args to the assembler
486 or extra switch-translations. */
491 /* config.h can define ASM_FINAL_SPEC to run a post processor after
492 the assembler has run. */
493 #ifndef ASM_FINAL_SPEC
494 #define ASM_FINAL_SPEC \
496 objcopy --extract-dwo \
497 %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \
498 %{c:%{o*:%:replace-extension(%{o*:%*} .dwo)}%{!o*:%b.dwo}}%{!c:%b.dwo} \n\
499 objcopy --strip-dwo \
500 %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \
504 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
505 or extra switch-translations. */
510 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
511 or extra switch-translations. */
516 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
517 or extra switch-translations. */
519 #define CC1PLUS_SPEC ""
522 /* config.h can define LINK_SPEC to provide extra args to the linker
523 or extra switch-translations. */
528 /* config.h can define LIB_SPEC to override the default libraries. */
530 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
533 /* When using -fsplit-stack we need to wrap pthread_create, in order
534 to initialize the stack guard. We always use wrapping, rather than
535 shared library ordering, and we keep the wrapper function in
536 libgcc. This is not yet a real spec, though it could become one;
537 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping
538 only works with GNU ld and gold. */
539 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}"
542 #define STATIC_LIBASAN_LIBS \
543 " %{static-libasan:%:include(libsanitizer.spec)%(link_libasan)}"
544 #ifdef LIBASAN_EARLY_SPEC
545 #define LIBASAN_SPEC STATIC_LIBASAN_LIBS
546 #elif defined(HAVE_LD_STATIC_DYNAMIC)
547 #define LIBASAN_SPEC "%{static-libasan:" LD_STATIC_OPTION \
548 "} -lasan %{static-libasan:" LD_DYNAMIC_OPTION "}" \
551 #define LIBASAN_SPEC "-lasan" STATIC_LIBASAN_LIBS
555 #ifndef LIBASAN_EARLY_SPEC
556 #define LIBASAN_EARLY_SPEC ""
560 #define STATIC_LIBTSAN_LIBS \
561 " %{static-libtsan:%:include(libsanitizer.spec)%(link_libtsan)}"
562 #ifdef LIBTSAN_EARLY_SPEC
563 #define LIBTSAN_SPEC STATIC_LIBTSAN_LIBS
564 #elif defined(HAVE_LD_STATIC_DYNAMIC)
565 #define LIBTSAN_SPEC "%{static-libtsan:" LD_STATIC_OPTION \
566 "} -ltsan %{static-libtsan:" LD_DYNAMIC_OPTION "}" \
569 #define LIBTSAN_SPEC "-ltsan" STATIC_LIBTSAN_LIBS
573 #ifndef LIBTSAN_EARLY_SPEC
574 #define LIBTSAN_EARLY_SPEC ""
578 #define STATIC_LIBLSAN_LIBS \
579 " %{static-liblsan:%:include(libsanitizer.spec)%(link_liblsan)}"
580 #ifdef HAVE_LD_STATIC_DYNAMIC
581 #define LIBLSAN_SPEC "%{!shared:%{static-liblsan:" LD_STATIC_OPTION \
582 "} -llsan %{static-liblsan:" LD_DYNAMIC_OPTION "}" \
583 STATIC_LIBLSAN_LIBS "}"
585 #define LIBLSAN_SPEC "%{!shared:-llsan" STATIC_LIBLSAN_LIBS "}"
589 #ifndef LIBUBSAN_SPEC
590 #define STATIC_LIBUBSAN_LIBS \
591 " %{static-libubsan:%:include(libsanitizer.spec)%(link_libubsan)}"
592 #ifdef HAVE_LD_STATIC_DYNAMIC
593 #define LIBUBSAN_SPEC "%{static-libubsan:" LD_STATIC_OPTION \
594 "} -lubsan %{static-libubsan:" LD_DYNAMIC_OPTION "}" \
597 #define LIBUBSAN_SPEC "-lubsan" STATIC_LIBUBSAN_LIBS
601 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
604 #if defined(REAL_LIBGCC_SPEC)
605 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
606 #elif defined(LINK_LIBGCC_SPECIAL_1)
607 /* Have gcc do the search for libgcc.a. */
608 #define LIBGCC_SPEC "libgcc.a%s"
610 #define LIBGCC_SPEC "-lgcc"
614 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
615 #ifndef STARTFILE_SPEC
616 #define STARTFILE_SPEC \
617 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
620 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
622 #define ENDFILE_SPEC ""
626 #define LINKER_NAME "collect2"
629 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
630 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
635 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
637 #ifndef ASM_DEBUG_SPEC
638 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
639 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
640 # define ASM_DEBUG_SPEC \
641 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
642 ? "%{!g0:%{gdwarf*:--gdwarf2}%{!gdwarf*:%{g*:--gstabs}}}" ASM_MAP \
643 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
645 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
646 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
648 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
649 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
653 #ifndef ASM_DEBUG_SPEC
654 # define ASM_DEBUG_SPEC ""
657 /* Here is the spec for running the linker, after compiling all files. */
659 /* This is overridable by the target in case they need to specify the
660 -lgcc and -lc order specially, yet not require them to override all
661 of LINK_COMMAND_SPEC. */
662 #ifndef LINK_GCC_C_SEQUENCE_SPEC
663 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
666 #ifndef LINK_SSP_SPEC
667 #ifdef TARGET_LIBC_PROVIDES_SSP
668 #define LINK_SSP_SPEC "%{fstack-protector:}"
670 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-strong|fstack-protector-all:-lssp_nonshared -lssp}"
674 #ifndef LINK_PIE_SPEC
676 #define LINK_PIE_SPEC "%{pie:-pie} "
678 #define LINK_PIE_SPEC "%{pie:} "
682 #ifndef LINK_BUILDID_SPEC
683 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
684 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
688 /* Conditional to test whether the LTO plugin is used or not.
689 FIXME: For slim LTO we will need to enable plugin unconditionally. This
690 still cause problems with PLUGIN_LD != LD and when plugin is built but
691 not useable. For GCC 4.6 we don't support slim LTO and thus we can enable
692 plugin only when LTO is enabled. We still honor explicit
693 -fuse-linker-plugin if the linker used understands -plugin. */
695 /* The linker has some plugin support. */
696 #if HAVE_LTO_PLUGIN > 0
697 /* The linker used has full plugin support, use LTO plugin by default. */
698 #if HAVE_LTO_PLUGIN == 2
699 #define PLUGIN_COND "!fno-use-linker-plugin:%{flto|flto=*|fuse-linker-plugin"
700 #define PLUGIN_COND_CLOSE "}"
702 /* The linker used has limited plugin support, use LTO plugin with explicit
703 -fuse-linker-plugin. */
704 #define PLUGIN_COND "fuse-linker-plugin"
705 #define PLUGIN_COND_CLOSE ""
707 #define LINK_PLUGIN_SPEC \
709 -plugin %(linker_plugin_file) \
710 -plugin-opt=%(lto_wrapper) \
711 -plugin-opt=-fresolution=%u.res \
712 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
715 /* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */
716 #define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\
717 %e-fuse-linker-plugin is not supported in this configuration}"
720 /* Linker command line options for -fsanitize= early on the command line. */
721 #ifndef SANITIZER_EARLY_SPEC
722 #define SANITIZER_EARLY_SPEC "\
723 %{!nostdlib:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_EARLY_SPEC "} \
724 %{%:sanitize(thread):" LIBTSAN_EARLY_SPEC "}}}"
727 /* Linker command line options for -fsanitize= late on the command line. */
728 #ifndef SANITIZER_SPEC
729 #define SANITIZER_SPEC "\
730 %{!nostdlib:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_SPEC "\
731 %{static:%ecannot specify -static with -fsanitize=address}\
732 %{%:sanitize(thread):%e-fsanitize=address is incompatible with -fsanitize=thread}}\
733 %{%:sanitize(thread):" LIBTSAN_SPEC "\
734 %{!pie:%{!shared:%e-fsanitize=thread linking must be done with -pie or -shared}}}\
735 %{%:sanitize(undefined):" LIBUBSAN_SPEC "}\
736 %{%:sanitize(leak):" LIBLSAN_SPEC "}}}"
739 /* This is the spec to use, once the code for creating the vtable
740 verification runtime library, libvtv.so, has been created. Currently
741 the vtable verification runtime functions are in libstdc++, so we use
742 the spec just below this one. */
743 #ifndef VTABLE_VERIFICATION_SPEC
744 #define VTABLE_VERIFICATION_SPEC "\
745 %{!nostdlib:%{fvtable-verify=std: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}\
746 %{fvtable-verify=preinit: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}}"
749 /* -u* was put back because both BSD and SysV seem to support it. */
750 /* %{static:} simply prevents an error message if the target machine
751 doesn't handle -static. */
752 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
753 scripts which exist in user specified directories, or in standard
755 /* We pass any -flto flags on to the linker, which is expected
756 to understand them. In practice, this means it had better be collect2. */
757 /* %{e*} includes -export-dynamic; see comment in common.opt. */
758 #ifndef LINK_COMMAND_SPEC
759 #define LINK_COMMAND_SPEC "\
760 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
763 "%{flto|flto=*:%<fcompare-debug*} \
764 %{flto} %{flto=*} %l " LINK_PIE_SPEC \
765 "%{fuse-ld=*:-fuse-ld=%*}\
766 %X %{o*} %{e*} %{N} %{n} %{r}\
767 %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}} " VTABLE_VERIFICATION_SPEC " \
768 %{static:} %{L*} %(mfwrap) %(link_libgcc) " SANITIZER_EARLY_SPEC " %o\
769 %{fopenacc|fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
770 %{fgnu-tm:%:include(libitm.spec)%(link_itm)}\
771 %(mflib) " STACK_SPLIT_SPEC "\
772 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} " SANITIZER_SPEC " \
773 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
774 %{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}"
777 #ifndef LINK_LIBGCC_SPEC
778 /* Generate -L options for startfile prefix list. */
779 # define LINK_LIBGCC_SPEC "%D"
782 #ifndef STARTFILE_PREFIX_SPEC
783 # define STARTFILE_PREFIX_SPEC ""
787 # define SYSROOT_SPEC "--sysroot=%R"
790 #ifndef SYSROOT_SUFFIX_SPEC
791 # define SYSROOT_SUFFIX_SPEC ""
794 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
795 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
798 static const char *asm_debug
= ASM_DEBUG_SPEC
;
799 static const char *cpp_spec
= CPP_SPEC
;
800 static const char *cc1_spec
= CC1_SPEC
;
801 static const char *cc1plus_spec
= CC1PLUS_SPEC
;
802 static const char *link_gcc_c_sequence_spec
= LINK_GCC_C_SEQUENCE_SPEC
;
803 static const char *link_ssp_spec
= LINK_SSP_SPEC
;
804 static const char *asm_spec
= ASM_SPEC
;
805 static const char *asm_final_spec
= ASM_FINAL_SPEC
;
806 static const char *link_spec
= LINK_SPEC
;
807 static const char *lib_spec
= LIB_SPEC
;
808 static const char *link_gomp_spec
= "";
809 static const char *libgcc_spec
= LIBGCC_SPEC
;
810 static const char *endfile_spec
= ENDFILE_SPEC
;
811 static const char *startfile_spec
= STARTFILE_SPEC
;
812 static const char *linker_name_spec
= LINKER_NAME
;
813 static const char *linker_plugin_file_spec
= "";
814 static const char *lto_wrapper_spec
= "";
815 static const char *lto_gcc_spec
= "";
816 static const char *link_command_spec
= LINK_COMMAND_SPEC
;
817 static const char *link_libgcc_spec
= LINK_LIBGCC_SPEC
;
818 static const char *startfile_prefix_spec
= STARTFILE_PREFIX_SPEC
;
819 static const char *sysroot_spec
= SYSROOT_SPEC
;
820 static const char *sysroot_suffix_spec
= SYSROOT_SUFFIX_SPEC
;
821 static const char *sysroot_hdrs_suffix_spec
= SYSROOT_HEADERS_SUFFIX_SPEC
;
822 static const char *self_spec
= "";
824 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
825 There should be no need to override these in target dependent files,
826 but we need to copy them to the specs file so that newer versions
827 of the GCC driver can correctly drive older tool chains with the
828 appropriate -B options. */
830 /* When cpplib handles traditional preprocessing, get rid of this, and
831 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
832 that we default the front end language better. */
833 static const char *trad_capable_cpp
=
834 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}";
836 /* We don't wrap .d files in %W{} since a missing .d file, and
837 therefore no dependency entry, confuses make into thinking a .o
838 file that happens to exist is up-to-date. */
839 static const char *cpp_unique_options
=
840 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
841 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
842 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
843 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
844 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
845 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
846 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
847 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
850 /* This contains cpp options which are common with cc1_options and are passed
851 only when preprocessing only to avoid duplication. We pass the cc1 spec
852 options to the preprocessor so that it the cc1 spec may manipulate
853 options used to set target flags. Those special target flags settings may
854 in turn cause preprocessor symbols to be defined specially. */
855 static const char *cpp_options
=
856 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
857 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
858 %{undef} %{save-temps*:-fpch-preprocess}";
860 /* This contains cpp options which are not passed when the preprocessor
861 output will be used by another program. */
862 static const char *cpp_debug_options
= "%{d*}";
864 /* NB: This is shared amongst all front-ends, except for Ada. */
865 static const char *cc1_options
=
866 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
867 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
868 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
869 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
870 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
871 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
872 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
873 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\
874 %{-target-help:--target-help}\
875 %{-version:--version}\
876 %{-help=*:--help=%*}\
877 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
878 %{fsyntax-only:-o %j} %{-param*}\
879 %{coverage:-fprofile-arcs -ftest-coverage}";
881 static const char *asm_options
=
882 "%{-target-help:%:print-asm-header()} "
884 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
885 to the assembler equivalents. */
886 "%{v} %{w:-W} %{I*} "
888 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
890 static const char *invoke_as
=
891 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
893 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
894 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
898 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
899 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
903 /* Some compilers have limits on line lengths, and the multilib_select
904 and/or multilib_matches strings can be very long, so we build them at
906 static struct obstack multilib_obstack
;
907 static const char *multilib_select
;
908 static const char *multilib_matches
;
909 static const char *multilib_defaults
;
910 static const char *multilib_exclusions
;
911 static const char *multilib_reuse
;
913 /* Check whether a particular argument is a default argument. */
915 #ifndef MULTILIB_DEFAULTS
916 #define MULTILIB_DEFAULTS { "" }
919 static const char *const multilib_defaults_raw
[] = MULTILIB_DEFAULTS
;
921 #ifndef DRIVER_SELF_SPECS
922 #define DRIVER_SELF_SPECS ""
925 /* Linking to libgomp implies pthreads. This is particularly important
926 for targets that use different start files and suchlike. */
927 #ifndef GOMP_SELF_SPECS
928 #define GOMP_SELF_SPECS "%{fopenacc|fopenmp|ftree-parallelize-loops=*: " \
932 /* Likewise for -fgnu-tm. */
933 #ifndef GTM_SELF_SPECS
934 #define GTM_SELF_SPECS "%{fgnu-tm: -pthread}"
937 static const char *const driver_self_specs
[] = {
938 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
939 DRIVER_SELF_SPECS
, CONFIGURE_SPECS
, GOMP_SELF_SPECS
, GTM_SELF_SPECS
942 #ifndef OPTION_DEFAULT_SPECS
943 #define OPTION_DEFAULT_SPECS { "", "" }
952 static const struct default_spec
953 option_default_specs
[] = { OPTION_DEFAULT_SPECS
};
957 struct user_specs
*next
;
958 const char *filename
;
961 static struct user_specs
*user_specs_head
, *user_specs_tail
;
964 /* Record the mapping from file suffixes for compilation specs. */
968 const char *suffix
; /* Use this compiler for input files
969 whose names end in this suffix. */
971 const char *spec
; /* To use this compiler, run this spec. */
973 const char *cpp_spec
; /* If non-NULL, substitute this spec
974 for `%C', rather than the usual
976 const int combinable
; /* If nonzero, compiler can deal with
977 multiple source files at once (IMA). */
978 const int needs_preprocessing
; /* If nonzero, source files need to
979 be run through a preprocessor. */
982 /* Pointer to a vector of `struct compiler' that gives the spec for
983 compiling a file, based on its suffix.
984 A file that does not end in any of these suffixes will be passed
985 unchanged to the loader and nothing else will be done to it.
987 An entry containing two 0s is used to terminate the vector.
989 If multiple entries match a file, the last matching one is used. */
991 static struct compiler
*compilers
;
993 /* Number of entries in `compilers', not counting the null terminator. */
995 static int n_compilers
;
997 /* The default list of file name suffixes and their compilation specs. */
999 static const struct compiler default_compilers
[] =
1001 /* Add lists of suffixes of known languages here. If those languages
1002 were not present when we built the driver, we will hit these copies
1003 and be given a more meaningful error than "file not used since
1004 linking is not done". */
1005 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
1006 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
1007 {".mii", "#Objective-C++", 0, 0, 0},
1008 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
1009 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
1010 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
1011 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
1012 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
1013 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
1014 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
1015 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
1016 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
1017 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
1018 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
1019 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
1020 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
1021 {".r", "#Ratfor", 0, 0, 0},
1022 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
1023 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
1024 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
1025 {".go", "#Go", 0, 1, 0},
1026 /* Next come the entries for C. */
1027 {".c", "@c", 0, 0, 1},
1029 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1030 external preprocessor if -save-temps is given. */
1031 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1034 %eGNU C no longer supports -traditional without -E}\
1035 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1036 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1037 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1039 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1040 cc1 %(cpp_unique_options) %(cc1_options)}}}\
1041 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
1043 "%{!E:%e-E or -x required when input is from standard input}\
1044 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
1045 {".h", "@c-header", 0, 0, 0},
1047 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1048 external preprocessor if -save-temps is given. */
1049 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1051 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1052 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1053 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1055 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
1056 %W{o*:--output-pch=%*}}%V}\
1057 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1058 cc1 %(cpp_unique_options) %(cc1_options)\
1059 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
1060 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
1061 {".i", "@cpp-output", 0, 0, 0},
1063 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
1064 {".s", "@assembler", 0, 0, 0},
1066 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
1067 {".sx", "@assembler-with-cpp", 0, 0, 0},
1068 {".S", "@assembler-with-cpp", 0, 0, 0},
1069 {"@assembler-with-cpp",
1070 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
1071 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1072 %{E|M|MM:%(cpp_debug_options)}\
1073 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1074 as %(asm_debug) %(asm_options) %|.s %A }}}}"
1076 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1077 %{E|M|MM:%(cpp_debug_options)}\
1078 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1079 as %(asm_debug) %(asm_options) %m.s %A }}}}"
1084 /* Mark end of table. */
1088 /* Number of elements in default_compilers, not counting the terminator. */
1090 static const int n_default_compilers
= ARRAY_SIZE (default_compilers
) - 1;
1092 typedef char *char_p
; /* For DEF_VEC_P. */
1094 /* A vector of options to give to the linker.
1095 These options are accumulated by %x,
1096 and substituted into the linker command with %X. */
1097 static vec
<char_p
> linker_options
;
1099 /* A vector of options to give to the assembler.
1100 These options are accumulated by -Wa,
1101 and substituted into the assembler command with %Y. */
1102 static vec
<char_p
> assembler_options
;
1104 /* A vector of options to give to the preprocessor.
1105 These options are accumulated by -Wp,
1106 and substituted into the preprocessor command with %Z. */
1107 static vec
<char_p
> preprocessor_options
;
1110 skip_whitespace (char *p
)
1114 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1115 be considered whitespace. */
1116 if (p
[0] == '\n' && p
[1] == '\n' && p
[2] == '\n')
1118 else if (*p
== '\n' || *p
== ' ' || *p
== '\t')
1132 /* Structures to keep track of prefixes to try when looking for files. */
1136 const char *prefix
; /* String to prepend to the path. */
1137 struct prefix_list
*next
; /* Next in linked list. */
1138 int require_machine_suffix
; /* Don't use without machine_suffix. */
1139 /* 2 means try both machine_suffix and just_machine_suffix. */
1140 int priority
; /* Sort key - priority within list. */
1141 int os_multilib
; /* 1 if OS multilib scheme should be used,
1142 0 for GCC multilib scheme. */
1147 struct prefix_list
*plist
; /* List of prefixes to try */
1148 int max_len
; /* Max length of a prefix in PLIST */
1149 const char *name
; /* Name of this list (used in config stuff) */
1152 /* List of prefixes to try when looking for executables. */
1154 static struct path_prefix exec_prefixes
= { 0, 0, "exec" };
1156 /* List of prefixes to try when looking for startup (crt0) files. */
1158 static struct path_prefix startfile_prefixes
= { 0, 0, "startfile" };
1160 /* List of prefixes to try when looking for include files. */
1162 static struct path_prefix include_prefixes
= { 0, 0, "include" };
1164 /* Suffix to attach to directories searched for commands.
1165 This looks like `MACHINE/VERSION/'. */
1167 static const char *machine_suffix
= 0;
1169 /* Suffix to attach to directories searched for commands.
1170 This is just `MACHINE/'. */
1172 static const char *just_machine_suffix
= 0;
1174 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1176 static const char *gcc_exec_prefix
;
1178 /* Adjusted value of standard_libexec_prefix. */
1180 static const char *gcc_libexec_prefix
;
1182 /* Default prefixes to attach to command names. */
1184 #ifndef STANDARD_STARTFILE_PREFIX_1
1185 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1187 #ifndef STANDARD_STARTFILE_PREFIX_2
1188 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1191 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1192 #undef MD_EXEC_PREFIX
1193 #undef MD_STARTFILE_PREFIX
1194 #undef MD_STARTFILE_PREFIX_1
1197 /* If no prefixes defined, use the null string, which will disable them. */
1198 #ifndef MD_EXEC_PREFIX
1199 #define MD_EXEC_PREFIX ""
1201 #ifndef MD_STARTFILE_PREFIX
1202 #define MD_STARTFILE_PREFIX ""
1204 #ifndef MD_STARTFILE_PREFIX_1
1205 #define MD_STARTFILE_PREFIX_1 ""
1208 /* These directories are locations set at configure-time based on the
1209 --prefix option provided to configure. Their initializers are
1210 defined in Makefile.in. These paths are not *directly* used when
1211 gcc_exec_prefix is set because, in that case, we know where the
1212 compiler has been installed, and use paths relative to that
1213 location instead. */
1214 static const char *const standard_exec_prefix
= STANDARD_EXEC_PREFIX
;
1215 static const char *const standard_libexec_prefix
= STANDARD_LIBEXEC_PREFIX
;
1216 static const char *const standard_bindir_prefix
= STANDARD_BINDIR_PREFIX
;
1217 static const char *const standard_startfile_prefix
= STANDARD_STARTFILE_PREFIX
;
1219 /* For native compilers, these are well-known paths containing
1220 components that may be provided by the system. For cross
1221 compilers, these paths are not used. */
1222 static const char *md_exec_prefix
= MD_EXEC_PREFIX
;
1223 static const char *md_startfile_prefix
= MD_STARTFILE_PREFIX
;
1224 static const char *md_startfile_prefix_1
= MD_STARTFILE_PREFIX_1
;
1225 static const char *const standard_startfile_prefix_1
1226 = STANDARD_STARTFILE_PREFIX_1
;
1227 static const char *const standard_startfile_prefix_2
1228 = STANDARD_STARTFILE_PREFIX_2
;
1230 /* A relative path to be used in finding the location of tools
1231 relative to the driver. */
1232 static const char *const tooldir_base_prefix
= TOOLDIR_BASE_PREFIX
;
1234 /* A prefix to be used when this is an accelerator compiler. */
1235 static const char *const accel_dir_suffix
= ACCEL_DIR_SUFFIX
;
1237 /* Subdirectory to use for locating libraries. Set by
1238 set_multilib_dir based on the compilation options. */
1240 static const char *multilib_dir
;
1242 /* Subdirectory to use for locating libraries in OS conventions. Set by
1243 set_multilib_dir based on the compilation options. */
1245 static const char *multilib_os_dir
;
1247 /* Subdirectory to use for locating libraries in multiarch conventions. Set by
1248 set_multilib_dir based on the compilation options. */
1250 static const char *multiarch_dir
;
1252 /* Structure to keep track of the specs that have been defined so far.
1253 These are accessed using %(specname) in a compiler or link
1258 /* The following 2 fields must be first */
1259 /* to allow EXTRA_SPECS to be initialized */
1260 const char *name
; /* name of the spec. */
1261 const char *ptr
; /* available ptr if no static pointer */
1263 /* The following fields are not initialized */
1264 /* by EXTRA_SPECS */
1265 const char **ptr_spec
; /* pointer to the spec itself. */
1266 struct spec_list
*next
; /* Next spec in linked list. */
1267 int name_len
; /* length of the name */
1268 bool user_p
; /* whether string come from file spec. */
1269 bool alloc_p
; /* whether string was allocated */
1272 #define INIT_STATIC_SPEC(NAME,PTR) \
1273 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, false, false }
1275 /* List of statically defined specs. */
1276 static struct spec_list static_specs
[] =
1278 INIT_STATIC_SPEC ("asm", &asm_spec
),
1279 INIT_STATIC_SPEC ("asm_debug", &asm_debug
),
1280 INIT_STATIC_SPEC ("asm_final", &asm_final_spec
),
1281 INIT_STATIC_SPEC ("asm_options", &asm_options
),
1282 INIT_STATIC_SPEC ("invoke_as", &invoke_as
),
1283 INIT_STATIC_SPEC ("cpp", &cpp_spec
),
1284 INIT_STATIC_SPEC ("cpp_options", &cpp_options
),
1285 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options
),
1286 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options
),
1287 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp
),
1288 INIT_STATIC_SPEC ("cc1", &cc1_spec
),
1289 INIT_STATIC_SPEC ("cc1_options", &cc1_options
),
1290 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec
),
1291 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec
),
1292 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec
),
1293 INIT_STATIC_SPEC ("endfile", &endfile_spec
),
1294 INIT_STATIC_SPEC ("link", &link_spec
),
1295 INIT_STATIC_SPEC ("lib", &lib_spec
),
1296 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec
),
1297 INIT_STATIC_SPEC ("libgcc", &libgcc_spec
),
1298 INIT_STATIC_SPEC ("startfile", &startfile_spec
),
1299 INIT_STATIC_SPEC ("cross_compile", &cross_compile
),
1300 INIT_STATIC_SPEC ("version", &compiler_version
),
1301 INIT_STATIC_SPEC ("multilib", &multilib_select
),
1302 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults
),
1303 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra
),
1304 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches
),
1305 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions
),
1306 INIT_STATIC_SPEC ("multilib_options", &multilib_options
),
1307 INIT_STATIC_SPEC ("multilib_reuse", &multilib_reuse
),
1308 INIT_STATIC_SPEC ("linker", &linker_name_spec
),
1309 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec
),
1310 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec
),
1311 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec
),
1312 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec
),
1313 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix
),
1314 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix
),
1315 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1
),
1316 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec
),
1317 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec
),
1318 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec
),
1319 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec
),
1320 INIT_STATIC_SPEC ("self_spec", &self_spec
),
1323 #ifdef EXTRA_SPECS /* additional specs needed */
1324 /* Structure to keep track of just the first two args of a spec_list.
1325 That is all that the EXTRA_SPECS macro gives us. */
1328 const char *const name
;
1329 const char *const ptr
;
1332 static const struct spec_list_1 extra_specs_1
[] = { EXTRA_SPECS
};
1333 static struct spec_list
*extra_specs
= (struct spec_list
*) 0;
1336 /* List of dynamically allocates specs that have been defined so far. */
1338 static struct spec_list
*specs
= (struct spec_list
*) 0;
1340 /* List of static spec functions. */
1342 static const struct spec_function static_spec_functions
[] =
1344 { "getenv", getenv_spec_function
},
1345 { "if-exists", if_exists_spec_function
},
1346 { "if-exists-else", if_exists_else_spec_function
},
1347 { "sanitize", sanitize_spec_function
},
1348 { "replace-outfile", replace_outfile_spec_function
},
1349 { "remove-outfile", remove_outfile_spec_function
},
1350 { "version-compare", version_compare_spec_function
},
1351 { "include", include_spec_function
},
1352 { "find-file", find_file_spec_function
},
1353 { "find-plugindir", find_plugindir_spec_function
},
1354 { "print-asm-header", print_asm_header_spec_function
},
1355 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function
},
1356 { "compare-debug-self-opt", compare_debug_self_opt_spec_function
},
1357 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function
},
1358 { "pass-through-libs", pass_through_libs_spec_func
},
1359 { "replace-extension", replace_extension_spec_func
},
1360 #ifdef EXTRA_SPEC_FUNCTIONS
1361 EXTRA_SPEC_FUNCTIONS
1366 static int processing_spec_function
;
1368 /* Add appropriate libgcc specs to OBSTACK, taking into account
1369 various permutations of -shared-libgcc, -shared, and such. */
1371 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1373 #ifndef USE_LD_AS_NEEDED
1374 #define USE_LD_AS_NEEDED 0
1378 init_gcc_specs (struct obstack
*obstack
, const char *shared_name
,
1379 const char *static_name
, const char *eh_name
)
1383 buf
= concat ("%{static|static-libgcc:", static_name
, " ", eh_name
, "}"
1384 "%{!static:%{!static-libgcc:"
1385 #if USE_LD_AS_NEEDED
1386 "%{!shared-libgcc:",
1387 static_name
, " " LD_AS_NEEDED_OPTION
" ",
1388 shared_name
, " " LD_NO_AS_NEEDED_OPTION
1391 shared_name
, "%{!shared: ", static_name
, "}"
1395 "%{!shared-libgcc:", static_name
, " ", eh_name
, "}"
1396 "%{shared-libgcc:", shared_name
, " ", static_name
, "}"
1400 "%{shared-libgcc:", shared_name
, "}"
1401 "%{!shared-libgcc:", static_name
, "}"
1404 "%{shared:", shared_name
, "}"
1409 obstack_grow (obstack
, buf
, strlen (buf
));
1412 #endif /* ENABLE_SHARED_LIBGCC */
1414 /* Initialize the specs lookup routines. */
1419 struct spec_list
*next
= (struct spec_list
*) 0;
1420 struct spec_list
*sl
= (struct spec_list
*) 0;
1424 return; /* Already initialized. */
1427 fnotice (stderr
, "Using built-in specs.\n");
1430 extra_specs
= XCNEWVEC (struct spec_list
, ARRAY_SIZE (extra_specs_1
));
1432 for (i
= ARRAY_SIZE (extra_specs_1
) - 1; i
>= 0; i
--)
1434 sl
= &extra_specs
[i
];
1435 sl
->name
= extra_specs_1
[i
].name
;
1436 sl
->ptr
= extra_specs_1
[i
].ptr
;
1438 sl
->name_len
= strlen (sl
->name
);
1439 sl
->ptr_spec
= &sl
->ptr
;
1444 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1446 sl
= &static_specs
[i
];
1451 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1452 /* ??? If neither -shared-libgcc nor --static-libgcc was
1453 seen, then we should be making an educated guess. Some proposed
1454 heuristics for ELF include:
1456 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1457 program will be doing dynamic loading, which will likely
1458 need the shared libgcc.
1460 (2) If "-ldl", then it's also a fair bet that we're doing
1463 (3) For each ET_DYN we're linking against (either through -lfoo
1464 or /some/path/foo.so), check to see whether it or one of
1465 its dependencies depends on a shared libgcc.
1469 If the runtime is fixed to look for program headers instead
1470 of calling __register_frame_info at all, for each object,
1471 use the shared libgcc if any EH symbol referenced.
1473 If crtstuff is fixed to not invoke __register_frame_info
1474 automatically, for each object, use the shared libgcc if
1475 any non-empty unwind section found.
1477 Doing any of this probably requires invoking an external program to
1478 do the actual object file scanning. */
1480 const char *p
= libgcc_spec
;
1483 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1484 when given the proper command line arguments. */
1487 if (in_sep
&& *p
== '-' && strncmp (p
, "-lgcc", 5) == 0)
1489 init_gcc_specs (&obstack
,
1491 #ifdef USE_LIBUNWIND_EXCEPTIONS
1497 #ifdef USE_LIBUNWIND_EXCEPTIONS
1498 # ifdef HAVE_LD_STATIC_DYNAMIC
1499 " %{!static:" LD_STATIC_OPTION
"} -lunwind"
1500 " %{!static:" LD_DYNAMIC_OPTION
"}"
1510 else if (in_sep
&& *p
== 'l' && strncmp (p
, "libgcc.a%s", 10) == 0)
1512 /* Ug. We don't know shared library extensions. Hope that
1513 systems that use this form don't do shared libraries. */
1514 init_gcc_specs (&obstack
,
1518 #ifdef USE_LIBUNWIND_EXCEPTIONS
1527 obstack_1grow (&obstack
, *p
);
1528 in_sep
= (*p
== ' ');
1533 obstack_1grow (&obstack
, '\0');
1534 libgcc_spec
= XOBFINISH (&obstack
, const char *);
1537 #ifdef USE_AS_TRADITIONAL_FORMAT
1538 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1540 static const char tf
[] = "--traditional-format ";
1541 obstack_grow (&obstack
, tf
, sizeof (tf
) - 1);
1542 obstack_grow0 (&obstack
, asm_spec
, strlen (asm_spec
));
1543 asm_spec
= XOBFINISH (&obstack
, const char *);
1547 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \
1548 defined LINKER_HASH_STYLE
1549 # ifdef LINK_BUILDID_SPEC
1550 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1551 obstack_grow (&obstack
, LINK_BUILDID_SPEC
, sizeof (LINK_BUILDID_SPEC
) - 1);
1553 # ifdef LINK_EH_SPEC
1554 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1555 obstack_grow (&obstack
, LINK_EH_SPEC
, sizeof (LINK_EH_SPEC
) - 1);
1557 # ifdef LINKER_HASH_STYLE
1558 /* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had
1561 static const char hash_style
[] = "--hash-style=";
1562 obstack_grow (&obstack
, hash_style
, sizeof (hash_style
) - 1);
1563 obstack_grow (&obstack
, LINKER_HASH_STYLE
, sizeof (LINKER_HASH_STYLE
) - 1);
1564 obstack_1grow (&obstack
, ' ');
1567 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
1568 link_spec
= XOBFINISH (&obstack
, const char *);
1574 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1575 removed; If the spec starts with a + then SPEC is added to the end of the
1579 set_spec (const char *name
, const char *spec
, bool user_p
)
1581 struct spec_list
*sl
;
1582 const char *old_spec
;
1583 int name_len
= strlen (name
);
1586 /* If this is the first call, initialize the statically allocated specs. */
1589 struct spec_list
*next
= (struct spec_list
*) 0;
1590 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1592 sl
= &static_specs
[i
];
1599 /* See if the spec already exists. */
1600 for (sl
= specs
; sl
; sl
= sl
->next
)
1601 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, name
))
1606 /* Not found - make it. */
1607 sl
= XNEW (struct spec_list
);
1608 sl
->name
= xstrdup (name
);
1609 sl
->name_len
= name_len
;
1610 sl
->ptr_spec
= &sl
->ptr
;
1612 *(sl
->ptr_spec
) = "";
1617 old_spec
= *(sl
->ptr_spec
);
1618 *(sl
->ptr_spec
) = ((spec
[0] == '+' && ISSPACE ((unsigned char)spec
[1]))
1619 ? concat (old_spec
, spec
+ 1, NULL
)
1624 fnotice (stderr
, "Setting spec %s to '%s'\n\n", name
, *(sl
->ptr_spec
));
1627 /* Free the old spec. */
1628 if (old_spec
&& sl
->alloc_p
)
1629 free (CONST_CAST (char *, old_spec
));
1631 sl
->user_p
= user_p
;
1635 /* Accumulate a command (program name and args), and run it. */
1637 typedef const char *const_char_p
; /* For DEF_VEC_P. */
1639 /* Vector of pointers to arguments in the current line of specifications. */
1641 static vec
<const_char_p
> argbuf
;
1643 /* Position in the argbuf vector containing the name of the output file
1644 (the value associated with the "-o" flag). */
1646 static int have_o_argbuf_index
= 0;
1648 /* Were the options -c, -S or -E passed. */
1649 static int have_c
= 0;
1651 /* Was the option -o passed. */
1652 static int have_o
= 0;
1654 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1655 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1658 static struct temp_name
{
1659 const char *suffix
; /* suffix associated with the code. */
1660 int length
; /* strlen (suffix). */
1661 int unique
; /* Indicates whether %g or %u/%U was used. */
1662 const char *filename
; /* associated filename. */
1663 int filename_length
; /* strlen (filename). */
1664 struct temp_name
*next
;
1667 /* Number of commands executed so far. */
1669 static int execution_count
;
1671 /* Number of commands that exited with a signal. */
1673 static int signal_count
;
1675 /* Allocate the argument vector. */
1683 /* Clear out the vector of arguments (after a command is executed). */
1688 argbuf
.truncate (0);
1691 /* Add one argument to the vector at the end.
1692 This is done when a space is seen or at the end of the line.
1693 If DELETE_ALWAYS is nonzero, the arg is a filename
1694 and the file should be deleted eventually.
1695 If DELETE_FAILURE is nonzero, the arg is a filename
1696 and the file should be deleted if this compilation fails. */
1699 store_arg (const char *arg
, int delete_always
, int delete_failure
)
1701 argbuf
.safe_push (arg
);
1703 if (strcmp (arg
, "-o") == 0)
1704 have_o_argbuf_index
= argbuf
.length ();
1705 if (delete_always
|| delete_failure
)
1708 /* If the temporary file we should delete is specified as
1709 part of a joined argument extract the filename. */
1711 && (p
= strrchr (arg
, '=')))
1713 record_temp_file (arg
, delete_always
, delete_failure
);
1717 /* Load specs from a file name named FILENAME, replacing occurrences of
1718 various different types of line-endings, \r\n, \n\r and just \r, with
1722 load_specs (const char *filename
)
1726 struct stat statbuf
;
1733 fnotice (stderr
, "Reading specs from %s\n", filename
);
1735 /* Open and stat the file. */
1736 desc
= open (filename
, O_RDONLY
, 0);
1738 pfatal_with_name (filename
);
1739 if (stat (filename
, &statbuf
) < 0)
1740 pfatal_with_name (filename
);
1742 /* Read contents of file into BUFFER. */
1743 buffer
= XNEWVEC (char, statbuf
.st_size
+ 1);
1744 readlen
= read (desc
, buffer
, (unsigned) statbuf
.st_size
);
1746 pfatal_with_name (filename
);
1747 buffer
[readlen
] = 0;
1750 specs
= XNEWVEC (char, readlen
+ 1);
1752 for (buffer_p
= buffer
; buffer_p
&& *buffer_p
; buffer_p
++)
1758 if (buffer_p
> buffer
&& *(buffer_p
- 1) == '\n') /* \n\r */
1760 else if (*(buffer_p
+ 1) == '\n') /* \r\n */
1774 /* Read compilation specs from a file named FILENAME,
1775 replacing the default ones.
1777 A suffix which starts with `*' is a definition for
1778 one of the machine-specific sub-specs. The "suffix" should be
1779 *asm, *cc1, *cpp, *link, *startfile, etc.
1780 The corresponding spec is stored in asm_spec, etc.,
1781 rather than in the `compilers' vector.
1783 Anything invalid in the file is a fatal error. */
1786 read_specs (const char *filename
, bool main_p
, bool user_p
)
1791 buffer
= load_specs (filename
);
1793 /* Scan BUFFER for specs, putting them in the vector. */
1799 char *in
, *out
, *p1
, *p2
, *p3
;
1801 /* Advance P in BUFFER to the next nonblank nocomment line. */
1802 p
= skip_whitespace (p
);
1806 /* Is this a special command that starts with '%'? */
1807 /* Don't allow this for the main specs file, since it would
1808 encourage people to overwrite it. */
1809 if (*p
== '%' && !main_p
)
1812 while (*p
&& *p
!= '\n')
1818 if (!strncmp (p1
, "%include", sizeof ("%include") - 1)
1819 && (p1
[sizeof "%include" - 1] == ' '
1820 || p1
[sizeof "%include" - 1] == '\t'))
1824 p1
+= sizeof ("%include");
1825 while (*p1
== ' ' || *p1
== '\t')
1828 if (*p1
++ != '<' || p
[-2] != '>')
1829 fatal_error ("specs %%include syntax malformed after "
1831 (long) (p1
- buffer
+ 1));
1834 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1835 read_specs (new_filename
? new_filename
: p1
, false, user_p
);
1838 else if (!strncmp (p1
, "%include_noerr", sizeof "%include_noerr" - 1)
1839 && (p1
[sizeof "%include_noerr" - 1] == ' '
1840 || p1
[sizeof "%include_noerr" - 1] == '\t'))
1844 p1
+= sizeof "%include_noerr";
1845 while (*p1
== ' ' || *p1
== '\t')
1848 if (*p1
++ != '<' || p
[-2] != '>')
1849 fatal_error ("specs %%include syntax malformed after "
1851 (long) (p1
- buffer
+ 1));
1854 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1856 read_specs (new_filename
, false, user_p
);
1857 else if (verbose_flag
)
1858 fnotice (stderr
, "could not find specs file %s\n", p1
);
1861 else if (!strncmp (p1
, "%rename", sizeof "%rename" - 1)
1862 && (p1
[sizeof "%rename" - 1] == ' '
1863 || p1
[sizeof "%rename" - 1] == '\t'))
1866 struct spec_list
*sl
;
1867 struct spec_list
*newsl
;
1869 /* Get original name. */
1870 p1
+= sizeof "%rename";
1871 while (*p1
== ' ' || *p1
== '\t')
1874 if (! ISALPHA ((unsigned char) *p1
))
1875 fatal_error ("specs %%rename syntax malformed after "
1877 (long) (p1
- buffer
));
1880 while (*p2
&& !ISSPACE ((unsigned char) *p2
))
1883 if (*p2
!= ' ' && *p2
!= '\t')
1884 fatal_error ("specs %%rename syntax malformed after "
1886 (long) (p2
- buffer
));
1890 while (*p2
== ' ' || *p2
== '\t')
1893 if (! ISALPHA ((unsigned char) *p2
))
1894 fatal_error ("specs %%rename syntax malformed after "
1896 (long) (p2
- buffer
));
1898 /* Get new spec name. */
1900 while (*p3
&& !ISSPACE ((unsigned char) *p3
))
1904 fatal_error ("specs %%rename syntax malformed after "
1906 (long) (p3
- buffer
));
1909 for (sl
= specs
; sl
; sl
= sl
->next
)
1910 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, p1
))
1914 fatal_error ("specs %s spec was not found to be renamed", p1
);
1916 if (strcmp (p1
, p2
) == 0)
1919 for (newsl
= specs
; newsl
; newsl
= newsl
->next
)
1920 if (strcmp (newsl
->name
, p2
) == 0)
1921 fatal_error ("%s: attempt to rename spec %qs to "
1922 "already defined spec %qs",
1927 fnotice (stderr
, "rename spec %s to %s\n", p1
, p2
);
1929 fnotice (stderr
, "spec is '%s'\n\n", *(sl
->ptr_spec
));
1933 set_spec (p2
, *(sl
->ptr_spec
), user_p
);
1935 free (CONST_CAST (char *, *(sl
->ptr_spec
)));
1937 *(sl
->ptr_spec
) = "";
1942 fatal_error ("specs unknown %% command after %ld characters",
1943 (long) (p1
- buffer
));
1946 /* Find the colon that should end the suffix. */
1948 while (*p1
&& *p1
!= ':' && *p1
!= '\n')
1951 /* The colon shouldn't be missing. */
1953 fatal_error ("specs file malformed after %ld characters",
1954 (long) (p1
- buffer
));
1956 /* Skip back over trailing whitespace. */
1958 while (p2
> buffer
&& (p2
[-1] == ' ' || p2
[-1] == '\t'))
1961 /* Copy the suffix to a string. */
1962 suffix
= save_string (p
, p2
- p
);
1963 /* Find the next line. */
1964 p
= skip_whitespace (p1
+ 1);
1966 fatal_error ("specs file malformed after %ld characters",
1967 (long) (p
- buffer
));
1970 /* Find next blank line or end of string. */
1971 while (*p1
&& !(*p1
== '\n' && (p1
[1] == '\n' || p1
[1] == '\0')))
1974 /* Specs end at the blank line and do not include the newline. */
1975 spec
= save_string (p
, p1
- p
);
1978 /* Delete backslash-newline sequences from the spec. */
1983 if (in
[0] == '\\' && in
[1] == '\n')
1985 else if (in
[0] == '#')
1986 while (*in
&& *in
!= '\n')
1994 if (suffix
[0] == '*')
1996 if (! strcmp (suffix
, "*link_command"))
1997 link_command_spec
= spec
;
1999 set_spec (suffix
+ 1, spec
, user_p
);
2003 /* Add this pair to the vector. */
2005 = XRESIZEVEC (struct compiler
, compilers
, n_compilers
+ 2);
2007 compilers
[n_compilers
].suffix
= suffix
;
2008 compilers
[n_compilers
].spec
= spec
;
2010 memset (&compilers
[n_compilers
], 0, sizeof compilers
[n_compilers
]);
2014 link_command_spec
= spec
;
2017 if (link_command_spec
== 0)
2018 fatal_error ("spec file has no spec for linking");
2021 /* Record the names of temporary files we tell compilers to write,
2022 and delete them at the end of the run. */
2024 /* This is the common prefix we use to make temp file names.
2025 It is chosen once for each run of this program.
2026 It is substituted into a spec by %g or %j.
2027 Thus, all temp file names contain this prefix.
2028 In practice, all temp file names start with this prefix.
2030 This prefix comes from the envvar TMPDIR if it is defined;
2031 otherwise, from the P_tmpdir macro if that is defined;
2032 otherwise, in /usr/tmp or /tmp;
2033 or finally the current directory if all else fails. */
2035 static const char *temp_filename
;
2037 /* Length of the prefix. */
2039 static int temp_filename_length
;
2041 /* Define the list of temporary files to delete. */
2046 struct temp_file
*next
;
2049 /* Queue of files to delete on success or failure of compilation. */
2050 static struct temp_file
*always_delete_queue
;
2051 /* Queue of files to delete on failure of compilation. */
2052 static struct temp_file
*failure_delete_queue
;
2054 /* Record FILENAME as a file to be deleted automatically.
2055 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2056 otherwise delete it in any case.
2057 FAIL_DELETE nonzero means delete it if a compilation step fails;
2058 otherwise delete it in any case. */
2061 record_temp_file (const char *filename
, int always_delete
, int fail_delete
)
2063 char *const name
= xstrdup (filename
);
2067 struct temp_file
*temp
;
2068 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
2069 if (! filename_cmp (name
, temp
->name
))
2072 temp
= XNEW (struct temp_file
);
2073 temp
->next
= always_delete_queue
;
2075 always_delete_queue
= temp
;
2082 struct temp_file
*temp
;
2083 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
2084 if (! filename_cmp (name
, temp
->name
))
2090 temp
= XNEW (struct temp_file
);
2091 temp
->next
= failure_delete_queue
;
2093 failure_delete_queue
= temp
;
2099 /* Delete all the temporary files whose names we previously recorded. */
2101 #ifndef DELETE_IF_ORDINARY
2102 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2105 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2106 if (unlink (NAME) < 0) \
2108 perror_with_name (NAME); \
2113 delete_if_ordinary (const char *name
)
2119 printf ("Delete %s? (y or n) ", name
);
2123 while ((c
= getchar ()) != '\n' && c
!= EOF
)
2126 if (i
== 'y' || i
== 'Y')
2128 DELETE_IF_ORDINARY (name
, st
, verbose_flag
);
2132 delete_temp_files (void)
2134 struct temp_file
*temp
;
2136 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
2137 delete_if_ordinary (temp
->name
);
2138 always_delete_queue
= 0;
2141 /* Delete all the files to be deleted on error. */
2144 delete_failure_queue (void)
2146 struct temp_file
*temp
;
2148 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
2149 delete_if_ordinary (temp
->name
);
2153 clear_failure_queue (void)
2155 failure_delete_queue
= 0;
2158 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2160 If DO_MULTI is true iterate over the paths twice, first with multilib
2161 suffix then without, otherwise iterate over the paths once without
2162 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2163 to avoid visiting the same path twice, but we could do better. For
2164 instance, /usr/lib/../lib is considered different from /usr/lib.
2165 At least EXTRA_SPACE chars past the end of the path passed to
2166 CALLBACK are available for use by the callback.
2167 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2169 Returns the value returned by CALLBACK. */
2172 for_each_path (const struct path_prefix
*paths
,
2175 void *(*callback
) (char *, void *),
2176 void *callback_info
)
2178 struct prefix_list
*pl
;
2179 const char *multi_dir
= NULL
;
2180 const char *multi_os_dir
= NULL
;
2181 const char *multiarch_suffix
= NULL
;
2182 const char *multi_suffix
;
2183 const char *just_multi_suffix
;
2186 bool skip_multi_dir
= false;
2187 bool skip_multi_os_dir
= false;
2189 multi_suffix
= machine_suffix
;
2190 just_multi_suffix
= just_machine_suffix
;
2191 if (do_multi
&& multilib_dir
&& strcmp (multilib_dir
, ".") != 0)
2193 multi_dir
= concat (multilib_dir
, dir_separator_str
, NULL
);
2194 multi_suffix
= concat (multi_suffix
, multi_dir
, NULL
);
2195 just_multi_suffix
= concat (just_multi_suffix
, multi_dir
, NULL
);
2197 if (do_multi
&& multilib_os_dir
&& strcmp (multilib_os_dir
, ".") != 0)
2198 multi_os_dir
= concat (multilib_os_dir
, dir_separator_str
, NULL
);
2200 multiarch_suffix
= concat (multiarch_dir
, dir_separator_str
, NULL
);
2204 size_t multi_dir_len
= 0;
2205 size_t multi_os_dir_len
= 0;
2206 size_t multiarch_len
= 0;
2208 size_t just_suffix_len
;
2212 multi_dir_len
= strlen (multi_dir
);
2214 multi_os_dir_len
= strlen (multi_os_dir
);
2215 if (multiarch_suffix
)
2216 multiarch_len
= strlen (multiarch_suffix
);
2217 suffix_len
= strlen (multi_suffix
);
2218 just_suffix_len
= strlen (just_multi_suffix
);
2222 len
= paths
->max_len
+ extra_space
+ 1;
2223 len
+= MAX (MAX (suffix_len
, multi_os_dir_len
), multiarch_len
);
2224 path
= XNEWVEC (char, len
);
2227 for (pl
= paths
->plist
; pl
!= 0; pl
= pl
->next
)
2229 len
= strlen (pl
->prefix
);
2230 memcpy (path
, pl
->prefix
, len
);
2232 /* Look first in MACHINE/VERSION subdirectory. */
2233 if (!skip_multi_dir
)
2235 memcpy (path
+ len
, multi_suffix
, suffix_len
+ 1);
2236 ret
= callback (path
, callback_info
);
2241 /* Some paths are tried with just the machine (ie. target)
2242 subdir. This is used for finding as, ld, etc. */
2244 && pl
->require_machine_suffix
== 2)
2246 memcpy (path
+ len
, just_multi_suffix
, just_suffix_len
+ 1);
2247 ret
= callback (path
, callback_info
);
2252 /* Now try the multiarch path. */
2254 && !pl
->require_machine_suffix
&& multiarch_dir
)
2256 memcpy (path
+ len
, multiarch_suffix
, multiarch_len
+ 1);
2257 ret
= callback (path
, callback_info
);
2262 /* Now try the base path. */
2263 if (!pl
->require_machine_suffix
2264 && !(pl
->os_multilib
? skip_multi_os_dir
: skip_multi_dir
))
2266 const char *this_multi
;
2267 size_t this_multi_len
;
2269 if (pl
->os_multilib
)
2271 this_multi
= multi_os_dir
;
2272 this_multi_len
= multi_os_dir_len
;
2276 this_multi
= multi_dir
;
2277 this_multi_len
= multi_dir_len
;
2281 memcpy (path
+ len
, this_multi
, this_multi_len
+ 1);
2285 ret
= callback (path
, callback_info
);
2293 if (multi_dir
== NULL
&& multi_os_dir
== NULL
)
2296 /* Run through the paths again, this time without multilibs.
2297 Don't repeat any we have already seen. */
2300 free (CONST_CAST (char *, multi_dir
));
2302 free (CONST_CAST (char *, multi_suffix
));
2303 multi_suffix
= machine_suffix
;
2304 free (CONST_CAST (char *, just_multi_suffix
));
2305 just_multi_suffix
= just_machine_suffix
;
2308 skip_multi_dir
= true;
2311 free (CONST_CAST (char *, multi_os_dir
));
2312 multi_os_dir
= NULL
;
2315 skip_multi_os_dir
= true;
2320 free (CONST_CAST (char *, multi_dir
));
2321 free (CONST_CAST (char *, multi_suffix
));
2322 free (CONST_CAST (char *, just_multi_suffix
));
2325 free (CONST_CAST (char *, multi_os_dir
));
2331 /* Callback for build_search_list. Adds path to obstack being built. */
2333 struct add_to_obstack_info
{
2340 add_to_obstack (char *path
, void *data
)
2342 struct add_to_obstack_info
*info
= (struct add_to_obstack_info
*) data
;
2344 if (info
->check_dir
&& !is_directory (path
, false))
2347 if (!info
->first_time
)
2348 obstack_1grow (info
->ob
, PATH_SEPARATOR
);
2350 obstack_grow (info
->ob
, path
, strlen (path
));
2352 info
->first_time
= false;
2356 /* Add or change the value of an environment variable, outputting the
2357 change to standard error if in verbose mode. */
2359 xputenv (const char *string
)
2362 fnotice (stderr
, "%s\n", string
);
2363 putenv (CONST_CAST (char *, string
));
2366 /* Build a list of search directories from PATHS.
2367 PREFIX is a string to prepend to the list.
2368 If CHECK_DIR_P is true we ensure the directory exists.
2369 If DO_MULTI is true, multilib paths are output first, then
2371 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2372 It is also used by the --print-search-dirs flag. */
2375 build_search_list (const struct path_prefix
*paths
, const char *prefix
,
2376 bool check_dir
, bool do_multi
)
2378 struct add_to_obstack_info info
;
2380 info
.ob
= &collect_obstack
;
2381 info
.check_dir
= check_dir
;
2382 info
.first_time
= true;
2384 obstack_grow (&collect_obstack
, prefix
, strlen (prefix
));
2385 obstack_1grow (&collect_obstack
, '=');
2387 for_each_path (paths
, do_multi
, 0, add_to_obstack
, &info
);
2389 obstack_1grow (&collect_obstack
, '\0');
2390 return XOBFINISH (&collect_obstack
, char *);
2393 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2397 putenv_from_prefixes (const struct path_prefix
*paths
, const char *env_var
,
2400 xputenv (build_search_list (paths
, env_var
, true, do_multi
));
2403 /* Check whether NAME can be accessed in MODE. This is like access,
2404 except that it never considers directories to be executable. */
2407 access_check (const char *name
, int mode
)
2413 if (stat (name
, &st
) < 0
2414 || S_ISDIR (st
.st_mode
))
2418 return access (name
, mode
);
2421 /* Callback for find_a_file. Appends the file name to the directory
2422 path. If the resulting file exists in the right mode, return the
2423 full pathname to the file. */
2425 struct file_at_path_info
{
2434 file_at_path (char *path
, void *data
)
2436 struct file_at_path_info
*info
= (struct file_at_path_info
*) data
;
2437 size_t len
= strlen (path
);
2439 memcpy (path
+ len
, info
->name
, info
->name_len
);
2440 len
+= info
->name_len
;
2442 /* Some systems have a suffix for executable files.
2443 So try appending that first. */
2444 if (info
->suffix_len
)
2446 memcpy (path
+ len
, info
->suffix
, info
->suffix_len
+ 1);
2447 if (access_check (path
, info
->mode
) == 0)
2452 if (access_check (path
, info
->mode
) == 0)
2458 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2459 access to check permissions. If DO_MULTI is true, search multilib
2460 paths then non-multilib paths, otherwise do not search multilib paths.
2461 Return 0 if not found, otherwise return its name, allocated with malloc. */
2464 find_a_file (const struct path_prefix
*pprefix
, const char *name
, int mode
,
2467 struct file_at_path_info info
;
2469 #ifdef DEFAULT_ASSEMBLER
2470 if (! strcmp (name
, "as") && access (DEFAULT_ASSEMBLER
, mode
) == 0)
2471 return xstrdup (DEFAULT_ASSEMBLER
);
2474 #ifdef DEFAULT_LINKER
2475 if (! strcmp (name
, "ld") && access (DEFAULT_LINKER
, mode
) == 0)
2476 return xstrdup (DEFAULT_LINKER
);
2479 /* Determine the filename to execute (special case for absolute paths). */
2481 if (IS_ABSOLUTE_PATH (name
))
2483 if (access (name
, mode
) == 0)
2484 return xstrdup (name
);
2490 info
.suffix
= (mode
& X_OK
) != 0 ? HOST_EXECUTABLE_SUFFIX
: "";
2491 info
.name_len
= strlen (info
.name
);
2492 info
.suffix_len
= strlen (info
.suffix
);
2495 return (char*) for_each_path (pprefix
, do_multi
,
2496 info
.name_len
+ info
.suffix_len
,
2497 file_at_path
, &info
);
2500 /* Ranking of prefixes in the sort list. -B prefixes are put before
2503 enum path_prefix_priority
2505 PREFIX_PRIORITY_B_OPT
,
2506 PREFIX_PRIORITY_LAST
2509 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2510 order according to PRIORITY. Within each PRIORITY, new entries are
2513 If WARN is nonzero, we will warn if no file is found
2514 through this prefix. WARN should point to an int
2515 which will be set to 1 if this entry is used.
2517 COMPONENT is the value to be passed to update_path.
2519 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2520 the complete value of machine_suffix.
2521 2 means try both machine_suffix and just_machine_suffix. */
2524 add_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2525 const char *component
, /* enum prefix_priority */ int priority
,
2526 int require_machine_suffix
, int os_multilib
)
2528 struct prefix_list
*pl
, **prev
;
2531 for (prev
= &pprefix
->plist
;
2532 (*prev
) != NULL
&& (*prev
)->priority
<= priority
;
2533 prev
= &(*prev
)->next
)
2536 /* Keep track of the longest prefix. */
2538 prefix
= update_path (prefix
, component
);
2539 len
= strlen (prefix
);
2540 if (len
> pprefix
->max_len
)
2541 pprefix
->max_len
= len
;
2543 pl
= XNEW (struct prefix_list
);
2544 pl
->prefix
= prefix
;
2545 pl
->require_machine_suffix
= require_machine_suffix
;
2546 pl
->priority
= priority
;
2547 pl
->os_multilib
= os_multilib
;
2549 /* Insert after PREV. */
2554 /* Same as add_prefix, but prepending target_system_root to prefix. */
2555 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2557 add_sysrooted_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2558 const char *component
,
2559 /* enum prefix_priority */ int priority
,
2560 int require_machine_suffix
, int os_multilib
)
2562 if (!IS_ABSOLUTE_PATH (prefix
))
2563 fatal_error ("system path %qs is not absolute", prefix
);
2565 if (target_system_root
)
2567 char *sysroot_no_trailing_dir_separator
= xstrdup (target_system_root
);
2568 size_t sysroot_len
= strlen (target_system_root
);
2571 && target_system_root
[sysroot_len
- 1] == DIR_SEPARATOR
)
2572 sysroot_no_trailing_dir_separator
[sysroot_len
- 1] = '\0';
2574 if (target_sysroot_suffix
)
2575 prefix
= concat (sysroot_no_trailing_dir_separator
,
2576 target_sysroot_suffix
, prefix
, NULL
);
2578 prefix
= concat (sysroot_no_trailing_dir_separator
, prefix
, NULL
);
2580 free (sysroot_no_trailing_dir_separator
);
2582 /* We have to override this because GCC's notion of sysroot
2583 moves along with GCC. */
2587 add_prefix (pprefix
, prefix
, component
, priority
,
2588 require_machine_suffix
, os_multilib
);
2591 /* Execute the command specified by the arguments on the current line of spec.
2592 When using pipes, this includes several piped-together commands
2593 with `|' between them.
2595 Return 0 if successful, -1 if failed. */
2601 int n_commands
; /* # of command. */
2603 struct pex_obj
*pex
;
2606 const char *prog
; /* program name. */
2607 const char **argv
; /* vector of args. */
2611 struct command
*commands
; /* each command buffer with above info. */
2613 gcc_assert (!processing_spec_function
);
2617 string
= find_a_file (&exec_prefixes
,
2618 argbuf
[0], X_OK
, false);
2621 insert_wrapper (wrapper_string
);
2624 /* Count # of piped commands. */
2625 for (n_commands
= 1, i
= 0; argbuf
.iterate (i
, &arg
); i
++)
2626 if (strcmp (arg
, "|") == 0)
2629 /* Get storage for each command. */
2630 commands
= (struct command
*) alloca (n_commands
* sizeof (struct command
));
2632 /* Split argbuf into its separate piped processes,
2633 and record info about each one.
2634 Also search for the programs that are to be run. */
2636 argbuf
.safe_push (0);
2638 commands
[0].prog
= argbuf
[0]; /* first command. */
2639 commands
[0].argv
= argbuf
.address ();
2641 if (!wrapper_string
)
2643 string
= find_a_file (&exec_prefixes
, commands
[0].prog
, X_OK
, false);
2644 commands
[0].argv
[0] = (string
) ? string
: commands
[0].argv
[0];
2647 for (n_commands
= 1, i
= 0; argbuf
.iterate (i
, &arg
); i
++)
2648 if (arg
&& strcmp (arg
, "|") == 0)
2649 { /* each command. */
2650 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2651 fatal_error ("-pipe not supported");
2653 argbuf
[i
] = 0; /* Termination of
2655 commands
[n_commands
].prog
= argbuf
[i
+ 1];
2656 commands
[n_commands
].argv
2657 = &(argbuf
.address ())[i
+ 1];
2658 string
= find_a_file (&exec_prefixes
, commands
[n_commands
].prog
,
2661 commands
[n_commands
].argv
[0] = string
;
2665 /* If -v, print what we are about to do, and maybe query. */
2669 /* For help listings, put a blank line between sub-processes. */
2670 if (print_help_list
)
2671 fputc ('\n', stderr
);
2673 /* Print each piped command as a separate line. */
2674 for (i
= 0; i
< n_commands
; i
++)
2676 const char *const *j
;
2678 if (verbose_only_flag
)
2680 for (j
= commands
[i
].argv
; *j
; j
++)
2683 for (p
= *j
; *p
; ++p
)
2684 if (!ISALNUM ((unsigned char) *p
)
2685 && *p
!= '_' && *p
!= '/' && *p
!= '-' && *p
!= '.')
2689 fprintf (stderr
, " \"");
2690 for (p
= *j
; *p
; ++p
)
2692 if (*p
== '"' || *p
== '\\' || *p
== '$')
2693 fputc ('\\', stderr
);
2696 fputc ('"', stderr
);
2698 /* If it's empty, print "". */
2700 fprintf (stderr
, " \"\"");
2702 fprintf (stderr
, " %s", *j
);
2706 for (j
= commands
[i
].argv
; *j
; j
++)
2707 /* If it's empty, print "". */
2709 fprintf (stderr
, " \"\"");
2711 fprintf (stderr
, " %s", *j
);
2713 /* Print a pipe symbol after all but the last command. */
2714 if (i
+ 1 != n_commands
)
2715 fprintf (stderr
, " |");
2716 fprintf (stderr
, "\n");
2719 if (verbose_only_flag
!= 0)
2721 /* verbose_only_flag should act as if the spec was
2722 executed, so increment execution_count before
2723 returning. This prevents spurious warnings about
2724 unused linker input files, etc. */
2729 fnotice (stderr
, "\nGo ahead? (y or n) ");
2733 while (getchar () != '\n')
2736 if (i
!= 'y' && i
!= 'Y')
2741 #ifdef ENABLE_VALGRIND_CHECKING
2742 /* Run the each command through valgrind. To simplify prepending the
2743 path to valgrind and the option "-q" (for quiet operation unless
2744 something triggers), we allocate a separate argv array. */
2746 for (i
= 0; i
< n_commands
; i
++)
2752 for (argc
= 0; commands
[i
].argv
[argc
] != NULL
; argc
++)
2755 argv
= XALLOCAVEC (const char *, argc
+ 3);
2757 argv
[0] = VALGRIND_PATH
;
2759 for (j
= 2; j
< argc
+ 2; j
++)
2760 argv
[j
] = commands
[i
].argv
[j
- 2];
2763 commands
[i
].argv
= argv
;
2764 commands
[i
].prog
= argv
[0];
2768 /* Run each piped subprocess. */
2770 pex
= pex_init (PEX_USE_PIPES
| ((report_times
|| report_times_to_file
)
2771 ? PEX_RECORD_TIMES
: 0),
2772 progname
, temp_filename
);
2774 fatal_error ("pex_init failed: %m");
2776 for (i
= 0; i
< n_commands
; i
++)
2780 const char *string
= commands
[i
].argv
[0];
2782 errmsg
= pex_run (pex
,
2783 ((i
+ 1 == n_commands
? PEX_LAST
: 0)
2784 | (string
== commands
[i
].prog
? PEX_SEARCH
: 0)),
2785 string
, CONST_CAST (char **, commands
[i
].argv
),
2790 fatal_error (errmsg
);
2794 pfatal_with_name (errmsg
);
2798 if (string
!= commands
[i
].prog
)
2799 free (CONST_CAST (char *, string
));
2804 /* Wait for all the subprocesses to finish. */
2808 struct pex_time
*times
= NULL
;
2811 statuses
= (int *) alloca (n_commands
* sizeof (int));
2812 if (!pex_get_status (pex
, n_commands
, statuses
))
2813 fatal_error ("failed to get exit status: %m");
2815 if (report_times
|| report_times_to_file
)
2817 times
= (struct pex_time
*) alloca (n_commands
* sizeof (struct pex_time
));
2818 if (!pex_get_times (pex
, n_commands
, times
))
2819 fatal_error ("failed to get process times: %m");
2824 for (i
= 0; i
< n_commands
; ++i
)
2826 int status
= statuses
[i
];
2828 if (WIFSIGNALED (status
))
2831 /* SIGPIPE is a special case. It happens in -pipe mode
2832 when the compiler dies before the preprocessor is done,
2833 or the assembler dies before the compiler is done.
2834 There's generally been an error already, and this is
2835 just fallout. So don't generate another error unless
2836 we would otherwise have succeeded. */
2837 if (WTERMSIG (status
) == SIGPIPE
2838 && (signal_count
|| greatest_status
>= MIN_FATAL_STATUS
))
2845 internal_error ("%s (program %s)",
2846 strsignal (WTERMSIG (status
)), commands
[i
].prog
);
2848 else if (WIFEXITED (status
)
2849 && WEXITSTATUS (status
) >= MIN_FATAL_STATUS
)
2851 if (WEXITSTATUS (status
) > greatest_status
)
2852 greatest_status
= WEXITSTATUS (status
);
2856 if (report_times
|| report_times_to_file
)
2858 struct pex_time
*pt
= ×
[i
];
2861 ut
= ((double) pt
->user_seconds
2862 + (double) pt
->user_microseconds
/ 1.0e6
);
2863 st
= ((double) pt
->system_seconds
2864 + (double) pt
->system_microseconds
/ 1.0e6
);
2869 fnotice (stderr
, "# %s %.2f %.2f\n",
2870 commands
[i
].prog
, ut
, st
);
2872 if (report_times_to_file
)
2875 const char *const *j
;
2877 fprintf (report_times_to_file
, "%g %g", ut
, st
);
2879 for (j
= &commands
[i
].prog
; *j
; j
= &commands
[i
].argv
[++c
])
2882 for (p
= *j
; *p
; ++p
)
2883 if (*p
== '"' || *p
== '\\' || *p
== '$'
2889 fprintf (report_times_to_file
, " \"");
2890 for (p
= *j
; *p
; ++p
)
2892 if (*p
== '"' || *p
== '\\' || *p
== '$')
2893 fputc ('\\', report_times_to_file
);
2894 fputc (*p
, report_times_to_file
);
2896 fputc ('"', report_times_to_file
);
2899 fprintf (report_times_to_file
, " %s", *j
);
2902 fputc ('\n', report_times_to_file
);
2912 /* Find all the switches given to us
2913 and make a vector describing them.
2914 The elements of the vector are strings, one per switch given.
2915 If a switch uses following arguments, then the `part1' field
2916 is the switch itself and the `args' field
2917 is a null-terminated vector containing the following arguments.
2918 Bits in the `live_cond' field are:
2919 SWITCH_LIVE to indicate this switch is true in a conditional spec.
2920 SWITCH_FALSE to indicate this switch is overridden by a later switch.
2921 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
2922 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
2923 in all do_spec calls afterwards. Used for %<S from self specs.
2924 The `validated' field is nonzero if any spec has looked at this switch;
2925 if it remains zero at the end of the run, it must be meaningless. */
2927 #define SWITCH_LIVE (1 << 0)
2928 #define SWITCH_FALSE (1 << 1)
2929 #define SWITCH_IGNORE (1 << 2)
2930 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
2931 #define SWITCH_KEEP_FOR_GCC (1 << 4)
2937 unsigned int live_cond
;
2943 static struct switchstr
*switches
;
2945 static int n_switches
;
2947 static int n_switches_alloc
;
2949 /* Set to zero if -fcompare-debug is disabled, positive if it's
2950 enabled and we're running the first compilation, negative if it's
2951 enabled and we're running the second compilation. For most of the
2952 time, it's in the range -1..1, but it can be temporarily set to 2
2953 or 3 to indicate that the -fcompare-debug flags didn't come from
2954 the command-line, but rather from the GCC_COMPARE_DEBUG environment
2955 variable, until a synthesized -fcompare-debug flag is added to the
2959 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
2960 int compare_debug_second
;
2962 /* Set to the flags that should be passed to the second compilation in
2963 a -fcompare-debug compilation. */
2964 const char *compare_debug_opt
;
2966 static struct switchstr
*switches_debug_check
[2];
2968 static int n_switches_debug_check
[2];
2970 static int n_switches_alloc_debug_check
[2];
2972 static char *debug_check_temp_file
[2];
2974 /* Language is one of three things:
2976 1) The name of a real programming language.
2977 2) NULL, indicating that no one has figured out
2979 3) '*', indicating that the file should be passed
2984 const char *language
;
2985 struct compiler
*incompiler
;
2990 /* Also a vector of input files specified. */
2992 static struct infile
*infiles
;
2996 static int n_infiles_alloc
;
2998 /* True if multiple input files are being compiled to a single
3001 static bool combine_inputs
;
3003 /* This counts the number of libraries added by lang_specific_driver, so that
3004 we can tell if there were any user supplied any files or libraries. */
3006 static int added_libraries
;
3008 /* And a vector of corresponding output files is made up later. */
3010 const char **outfiles
;
3012 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3014 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
3015 is true if we should look for an executable suffix. DO_OBJ
3016 is true if we should look for an object suffix. */
3019 convert_filename (const char *name
, int do_exe ATTRIBUTE_UNUSED
,
3020 int do_obj ATTRIBUTE_UNUSED
)
3022 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3030 len
= strlen (name
);
3032 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3033 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
3034 if (do_obj
&& len
> 2
3035 && name
[len
- 2] == '.'
3036 && name
[len
- 1] == 'o')
3038 obstack_grow (&obstack
, name
, len
- 2);
3039 obstack_grow0 (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
3040 name
= XOBFINISH (&obstack
, const char *);
3044 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3045 /* If there is no filetype, make it the executable suffix (which includes
3046 the "."). But don't get confused if we have just "-o". */
3047 if (! do_exe
|| TARGET_EXECUTABLE_SUFFIX
[0] == 0 || (len
== 2 && name
[0] == '-'))
3050 for (i
= len
- 1; i
>= 0; i
--)
3051 if (IS_DIR_SEPARATOR (name
[i
]))
3054 for (i
++; i
< len
; i
++)
3058 obstack_grow (&obstack
, name
, len
);
3059 obstack_grow0 (&obstack
, TARGET_EXECUTABLE_SUFFIX
,
3060 strlen (TARGET_EXECUTABLE_SUFFIX
));
3061 name
= XOBFINISH (&obstack
, const char *);
3068 /* Display the command line switches accepted by gcc. */
3072 printf (_("Usage: %s [options] file...\n"), progname
);
3073 fputs (_("Options:\n"), stdout
);
3075 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout
);
3076 fputs (_(" --help Display this information\n"), stdout
);
3077 fputs (_(" --target-help Display target specific command line options\n"), stdout
);
3078 fputs (_(" --help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumented}}[,...]\n"), stdout
);
3079 fputs (_(" Display specific types of command line options\n"), stdout
);
3081 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout
);
3082 fputs (_(" --version Display compiler version information\n"), stdout
);
3083 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout
);
3084 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout
);
3085 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout
);
3086 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout
);
3087 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout
);
3088 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout
);
3089 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout
);
3091 -print-multiarch Display the target's normalized GNU triplet, used as\n\
3092 a component in the library path\n"), stdout
);
3093 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout
);
3095 -print-multi-lib Display the mapping between command line options and\n\
3096 multiple library search directories\n"), stdout
);
3097 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout
);
3098 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout
);
3099 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout
);
3100 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout
);
3101 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout
);
3102 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout
);
3103 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout
);
3104 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout
);
3105 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout
);
3106 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout
);
3107 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout
);
3109 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
3110 prefixes to other gcc components\n"), stdout
);
3111 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout
);
3112 fputs (_(" -time Time the execution of each subprocess\n"), stdout
);
3113 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout
);
3114 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout
);
3116 --sysroot=<directory> Use <directory> as the root directory for headers\n\
3117 and libraries\n"), stdout
);
3118 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout
);
3119 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout
);
3120 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout
);
3121 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout
);
3122 fputs (_(" -S Compile only; do not assemble or link\n"), stdout
);
3123 fputs (_(" -c Compile and assemble, but do not link\n"), stdout
);
3124 fputs (_(" -o <file> Place the output into <file>\n"), stdout
);
3125 fputs (_(" -pie Create a position independent executable\n"), stdout
);
3126 fputs (_(" -shared Create a shared library\n"), stdout
);
3128 -x <language> Specify the language of the following input files\n\
3129 Permissible languages include: c c++ assembler none\n\
3130 'none' means revert to the default behavior of\n\
3131 guessing the language based on the file's extension\n\
3135 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3136 passed on to the various sub-processes invoked by %s. In order to pass\n\
3137 other options on to these processes the -W<letter> options must be used.\n\
3140 /* The rest of the options are displayed by invocations of the various
3145 add_preprocessor_option (const char *option
, int len
)
3147 preprocessor_options
.safe_push (save_string (option
, len
));
3151 add_assembler_option (const char *option
, int len
)
3153 assembler_options
.safe_push (save_string (option
, len
));
3157 add_linker_option (const char *option
, int len
)
3159 linker_options
.safe_push (save_string (option
, len
));
3162 /* Allocate space for an input file in infiles. */
3167 if (n_infiles_alloc
== 0)
3169 n_infiles_alloc
= 16;
3170 infiles
= XNEWVEC (struct infile
, n_infiles_alloc
);
3172 else if (n_infiles_alloc
== n_infiles
)
3174 n_infiles_alloc
*= 2;
3175 infiles
= XRESIZEVEC (struct infile
, infiles
, n_infiles_alloc
);
3179 /* Store an input file with the given NAME and LANGUAGE in
3183 add_infile (const char *name
, const char *language
)
3186 infiles
[n_infiles
].name
= name
;
3187 infiles
[n_infiles
++].language
= language
;
3190 /* Allocate space for a switch in switches. */
3195 if (n_switches_alloc
== 0)
3197 n_switches_alloc
= 16;
3198 switches
= XNEWVEC (struct switchstr
, n_switches_alloc
);
3200 else if (n_switches_alloc
== n_switches
)
3202 n_switches_alloc
*= 2;
3203 switches
= XRESIZEVEC (struct switchstr
, switches
, n_switches_alloc
);
3207 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3208 as validated if VALIDATED and KNOWN if it is an internal switch. */
3211 save_switch (const char *opt
, size_t n_args
, const char *const *args
,
3212 bool validated
, bool known
)
3215 switches
[n_switches
].part1
= opt
+ 1;
3217 switches
[n_switches
].args
= 0;
3220 switches
[n_switches
].args
= XNEWVEC (const char *, n_args
+ 1);
3221 memcpy (switches
[n_switches
].args
, args
, n_args
* sizeof (const char *));
3222 switches
[n_switches
].args
[n_args
] = NULL
;
3225 switches
[n_switches
].live_cond
= 0;
3226 switches
[n_switches
].validated
= validated
;
3227 switches
[n_switches
].known
= known
;
3228 switches
[n_switches
].ordering
= 0;
3232 /* Handle an option DECODED that is unknown to the option-processing
3236 driver_unknown_option_callback (const struct cl_decoded_option
*decoded
)
3238 const char *opt
= decoded
->arg
;
3239 if (opt
[1] == 'W' && opt
[2] == 'n' && opt
[3] == 'o' && opt
[4] == '-'
3240 && !(decoded
->errors
& CL_ERR_NEGATIVE
))
3242 /* Leave unknown -Wno-* options for the compiler proper, to be
3243 diagnosed only if there are warnings. */
3244 save_switch (decoded
->canonical_option
[0],
3245 decoded
->canonical_option_num_elements
- 1,
3246 &decoded
->canonical_option
[1], false, true);
3249 if (decoded
->opt_index
== OPT_SPECIAL_unknown
)
3251 /* Give it a chance to define it a a spec file. */
3252 save_switch (decoded
->canonical_option
[0],
3253 decoded
->canonical_option_num_elements
- 1,
3254 &decoded
->canonical_option
[1], false, false);
3261 /* Handle an option DECODED that is not marked as CL_DRIVER.
3262 LANG_MASK will always be CL_DRIVER. */
3265 driver_wrong_lang_callback (const struct cl_decoded_option
*decoded
,
3266 unsigned int lang_mask ATTRIBUTE_UNUSED
)
3268 /* At this point, non-driver options are accepted (and expected to
3269 be passed down by specs) unless marked to be rejected by the
3270 driver. Options to be rejected by the driver but accepted by the
3271 compilers proper are treated just like completely unknown
3273 const struct cl_option
*option
= &cl_options
[decoded
->opt_index
];
3275 if (option
->cl_reject_driver
)
3276 error ("unrecognized command line option %qs",
3277 decoded
->orig_option_with_args_text
);
3279 save_switch (decoded
->canonical_option
[0],
3280 decoded
->canonical_option_num_elements
- 1,
3281 &decoded
->canonical_option
[1], false, true);
3284 static const char *spec_lang
= 0;
3285 static int last_language_n_infiles
;
3287 /* Handle a driver option; arguments and return value as for
3291 driver_handle_option (struct gcc_options
*opts
,
3292 struct gcc_options
*opts_set
,
3293 const struct cl_decoded_option
*decoded
,
3294 unsigned int lang_mask ATTRIBUTE_UNUSED
, int kind
,
3296 const struct cl_option_handlers
*handlers ATTRIBUTE_UNUSED
,
3297 diagnostic_context
*dc
)
3299 size_t opt_index
= decoded
->opt_index
;
3300 const char *arg
= decoded
->arg
;
3301 const char *compare_debug_replacement_opt
;
3302 int value
= decoded
->value
;
3303 bool validated
= false;
3304 bool do_save
= true;
3306 gcc_assert (opts
== &global_options
);
3307 gcc_assert (opts_set
== &global_options_set
);
3308 gcc_assert (kind
== DK_UNSPECIFIED
);
3309 gcc_assert (loc
== UNKNOWN_LOCATION
);
3310 gcc_assert (dc
== global_dc
);
3316 struct spec_list
*sl
;
3318 for (sl
= specs
; sl
; sl
= sl
->next
)
3319 printf ("*%s:\n%s\n\n", sl
->name
, *(sl
->ptr_spec
));
3320 if (link_command_spec
)
3321 printf ("*link_command:\n%s\n\n", link_command_spec
);
3325 case OPT_dumpversion
:
3326 printf ("%s\n", spec_version
);
3329 case OPT_dumpmachine
:
3330 printf ("%s\n", spec_machine
);
3336 /* CPP driver cannot obtain switch from cc1_options. */
3338 add_preprocessor_option ("--version", strlen ("--version"));
3339 add_assembler_option ("--version", strlen ("--version"));
3340 add_linker_option ("--version", strlen ("--version"));
3344 print_help_list
= 1;
3346 /* CPP driver cannot obtain switch from cc1_options. */
3348 add_preprocessor_option ("--help", 6);
3349 add_assembler_option ("--help", 6);
3350 add_linker_option ("--help", 6);
3354 print_subprocess_help
= 2;
3357 case OPT__target_help
:
3358 print_subprocess_help
= 1;
3360 /* CPP driver cannot obtain switch from cc1_options. */
3362 add_preprocessor_option ("--target-help", 13);
3363 add_assembler_option ("--target-help", 13);
3364 add_linker_option ("--target-help", 13);
3367 case OPT__no_sysroot_suffix
:
3368 case OPT_pass_exit_codes
:
3369 case OPT_print_search_dirs
:
3370 case OPT_print_file_name_
:
3371 case OPT_print_prog_name_
:
3372 case OPT_print_multi_lib
:
3373 case OPT_print_multi_directory
:
3374 case OPT_print_sysroot
:
3375 case OPT_print_multi_os_directory
:
3376 case OPT_print_multiarch
:
3377 case OPT_print_sysroot_headers_suffix
:
3380 /* These options set the variables specified in common.opt
3381 automatically, and do not need to be saved for spec
3386 case OPT_print_libgcc_file_name
:
3387 print_file_name
= "libgcc.a";
3391 case OPT_fuse_ld_bfd
:
3395 case OPT_fuse_ld_gold
:
3399 case OPT_fcompare_debug_second
:
3400 compare_debug_second
= 1;
3403 case OPT_fcompare_debug
:
3407 compare_debug_replacement_opt
= "-fcompare-debug=";
3409 goto compare_debug_with_arg
;
3412 compare_debug_replacement_opt
= "-fcompare-debug=-gtoggle";
3414 goto compare_debug_with_arg
;
3421 case OPT_fcompare_debug_
:
3422 compare_debug_replacement_opt
= decoded
->canonical_option
[0];
3423 compare_debug_with_arg
:
3424 gcc_assert (decoded
->canonical_option_num_elements
== 1);
3425 gcc_assert (arg
!= NULL
);
3430 if (compare_debug
< 0)
3431 compare_debug_opt
= NULL
;
3433 compare_debug_opt
= arg
;
3434 save_switch (compare_debug_replacement_opt
, 0, NULL
, validated
, true);
3440 /* Pass the rest of this option to the assembler. */
3442 /* Split the argument at commas. */
3444 for (j
= 0; arg
[j
]; j
++)
3447 add_assembler_option (arg
+ prev
, j
- prev
);
3451 /* Record the part after the last comma. */
3452 add_assembler_option (arg
+ prev
, j
- prev
);
3460 /* Pass the rest of this option to the preprocessor. */
3462 /* Split the argument at commas. */
3464 for (j
= 0; arg
[j
]; j
++)
3467 add_preprocessor_option (arg
+ prev
, j
- prev
);
3471 /* Record the part after the last comma. */
3472 add_preprocessor_option (arg
+ prev
, j
- prev
);
3480 /* Split the argument at commas. */
3482 for (j
= 0; arg
[j
]; j
++)
3485 add_infile (save_string (arg
+ prev
, j
- prev
), "*");
3488 /* Record the part after the last comma. */
3489 add_infile (arg
+ prev
, "*");
3495 add_infile (arg
, "*");
3499 case OPT_Xpreprocessor
:
3500 add_preprocessor_option (arg
, strlen (arg
));
3504 case OPT_Xassembler
:
3505 add_assembler_option (arg
, strlen (arg
));
3510 /* POSIX allows separation of -l and the lib arg; canonicalize
3511 by concatenating -l with its arg */
3512 add_infile (concat ("-l", arg
, NULL
), "*");
3517 /* Similarly, canonicalize -L for linkers that may not accept
3518 separate arguments. */
3519 save_switch (concat ("-L", arg
, NULL
), 0, NULL
, validated
, true);
3524 save_switch (concat ("-F", arg
, NULL
), 0, NULL
, validated
, true);
3527 case OPT_save_temps
:
3528 save_temps_flag
= SAVE_TEMPS_CWD
;
3532 case OPT_save_temps_
:
3533 if (strcmp (arg
, "cwd") == 0)
3534 save_temps_flag
= SAVE_TEMPS_CWD
;
3535 else if (strcmp (arg
, "obj") == 0
3536 || strcmp (arg
, "object") == 0)
3537 save_temps_flag
= SAVE_TEMPS_OBJ
;
3539 fatal_error ("%qs is an unknown -save-temps option",
3540 decoded
->orig_option_with_args_text
);
3543 case OPT_no_canonical_prefixes
:
3544 /* Already handled as a special case, so ignored here. */
3550 /* These options set the variables specified in common.opt
3551 automatically, but do need to be saved for spec
3557 struct user_specs
*user
= XNEW (struct user_specs
);
3559 user
->next
= (struct user_specs
*) 0;
3560 user
->filename
= arg
;
3561 if (user_specs_tail
)
3562 user_specs_tail
->next
= user
;
3564 user_specs_head
= user
;
3565 user_specs_tail
= user
;
3571 target_system_root
= arg
;
3572 target_system_root_changed
= 1;
3577 if (report_times_to_file
)
3578 fclose (report_times_to_file
);
3579 report_times_to_file
= fopen (arg
, "a");
3585 This is similar to -v except that there is no execution
3586 of the commands and the echoed arguments are quoted. It
3587 is intended for use in shell scripts to capture the
3588 driver-generated command line. */
3589 verbose_only_flag
++;
3596 size_t len
= strlen (arg
);
3598 /* Catch the case where the user has forgotten to append a
3599 directory separator to the path. Note, they may be using
3600 -B to add an executable name prefix, eg "i386-elf-", in
3601 order to distinguish between multiple installations of
3602 GCC in the same directory. Hence we must check to see
3603 if appending a directory separator actually makes a
3604 valid directory name. */
3605 if (!IS_DIR_SEPARATOR (arg
[len
- 1])
3606 && is_directory (arg
, false))
3608 char *tmp
= XNEWVEC (char, len
+ 2);
3610 tmp
[len
] = DIR_SEPARATOR
;
3615 add_prefix (&exec_prefixes
, arg
, NULL
,
3616 PREFIX_PRIORITY_B_OPT
, 0, 0);
3617 add_prefix (&startfile_prefixes
, arg
, NULL
,
3618 PREFIX_PRIORITY_B_OPT
, 0, 0);
3619 add_prefix (&include_prefixes
, arg
, NULL
,
3620 PREFIX_PRIORITY_B_OPT
, 0, 0);
3627 if (!strcmp (spec_lang
, "none"))
3628 /* Suppress the warning if -xnone comes after the last input
3629 file, because alternate command interfaces like g++ might
3630 find it useful to place -xnone after each input file. */
3633 last_language_n_infiles
= n_infiles
;
3639 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3640 arg
= convert_filename (arg
, ! have_c
, 0);
3642 /* Save the output name in case -save-temps=obj was used. */
3643 save_temps_prefix
= xstrdup (arg
);
3644 /* On some systems, ld cannot handle "-o" without a space. So
3645 split the option from its argument. */
3646 save_switch ("-o", 1, &arg
, validated
, true);
3649 case OPT_static_libgcc
:
3650 case OPT_shared_libgcc
:
3651 case OPT_static_libgfortran
:
3652 case OPT_static_libstdc__
:
3653 /* These are always valid, since gcc.c itself understands the
3654 first two, gfortranspec.c understands -static-libgfortran and
3655 g++spec.c understands -static-libstdc++ */
3664 /* Various driver options need no special processing at this
3665 point, having been handled in a prescan above or being
3666 handled by specs. */
3671 save_switch (decoded
->canonical_option
[0],
3672 decoded
->canonical_option_num_elements
- 1,
3673 &decoded
->canonical_option
[1], validated
, true);
3677 /* Put the driver's standard set of option handlers in *HANDLERS. */
3680 set_option_handlers (struct cl_option_handlers
*handlers
)
3682 handlers
->unknown_option_callback
= driver_unknown_option_callback
;
3683 handlers
->wrong_lang_callback
= driver_wrong_lang_callback
;
3684 handlers
->num_handlers
= 3;
3685 handlers
->handlers
[0].handler
= driver_handle_option
;
3686 handlers
->handlers
[0].mask
= CL_DRIVER
;
3687 handlers
->handlers
[1].handler
= common_handle_option
;
3688 handlers
->handlers
[1].mask
= CL_COMMON
;
3689 handlers
->handlers
[2].handler
= target_handle_option
;
3690 handlers
->handlers
[2].mask
= CL_TARGET
;
3693 /* Create the vector `switches' and its contents.
3694 Store its length in `n_switches'. */
3697 process_command (unsigned int decoded_options_count
,
3698 struct cl_decoded_option
*decoded_options
)
3702 char *tooldir_prefix
, *tooldir_prefix2
;
3703 char *(*get_relative_prefix
) (const char *, const char *,
3704 const char *) = NULL
;
3705 struct cl_option_handlers handlers
;
3708 gcc_exec_prefix
= getenv ("GCC_EXEC_PREFIX");
3712 added_libraries
= 0;
3714 /* Figure compiler version from version string. */
3716 compiler_version
= temp1
= xstrdup (version_string
);
3718 for (; *temp1
; ++temp1
)
3727 /* Handle any -no-canonical-prefixes flag early, to assign the function
3728 that builds relative prefixes. This function creates default search
3729 paths that are needed later in normal option handling. */
3731 for (j
= 1; j
< decoded_options_count
; j
++)
3733 if (decoded_options
[j
].opt_index
== OPT_no_canonical_prefixes
)
3735 get_relative_prefix
= make_relative_prefix_ignore_links
;
3739 if (! get_relative_prefix
)
3740 get_relative_prefix
= make_relative_prefix
;
3742 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3743 see if we can create it from the pathname specified in
3744 decoded_options[0].arg. */
3746 gcc_libexec_prefix
= standard_libexec_prefix
;
3748 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3749 if (!gcc_exec_prefix
)
3751 gcc_exec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3752 standard_bindir_prefix
,
3753 standard_exec_prefix
);
3754 gcc_libexec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3755 standard_bindir_prefix
,
3756 standard_libexec_prefix
);
3757 if (gcc_exec_prefix
)
3758 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix
, NULL
));
3762 /* make_relative_prefix requires a program name, but
3763 GCC_EXEC_PREFIX is typically a directory name with a trailing
3764 / (which is ignored by make_relative_prefix), so append a
3766 char *tmp_prefix
= concat (gcc_exec_prefix
, "gcc", NULL
);
3767 gcc_libexec_prefix
= get_relative_prefix (tmp_prefix
,
3768 standard_exec_prefix
,
3769 standard_libexec_prefix
);
3771 /* The path is unrelocated, so fallback to the original setting. */
3772 if (!gcc_libexec_prefix
)
3773 gcc_libexec_prefix
= standard_libexec_prefix
;
3779 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3780 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3781 or an automatically created GCC_EXEC_PREFIX from
3782 decoded_options[0].arg. */
3784 /* Do language-specific adjustment/addition of flags. */
3785 lang_specific_driver (&decoded_options
, &decoded_options_count
,
3788 if (gcc_exec_prefix
)
3790 int len
= strlen (gcc_exec_prefix
);
3792 if (len
> (int) sizeof ("/lib/gcc/") - 1
3793 && (IS_DIR_SEPARATOR (gcc_exec_prefix
[len
-1])))
3795 temp
= gcc_exec_prefix
+ len
- sizeof ("/lib/gcc/") + 1;
3796 if (IS_DIR_SEPARATOR (*temp
)
3797 && filename_ncmp (temp
+ 1, "lib", 3) == 0
3798 && IS_DIR_SEPARATOR (temp
[4])
3799 && filename_ncmp (temp
+ 5, "gcc", 3) == 0)
3800 len
-= sizeof ("/lib/gcc/") - 1;
3803 set_std_prefix (gcc_exec_prefix
, len
);
3804 add_prefix (&exec_prefixes
, gcc_libexec_prefix
, "GCC",
3805 PREFIX_PRIORITY_LAST
, 0, 0);
3806 add_prefix (&startfile_prefixes
, gcc_exec_prefix
, "GCC",
3807 PREFIX_PRIORITY_LAST
, 0, 0);
3810 /* COMPILER_PATH and LIBRARY_PATH have values
3811 that are lists of directory names with colons. */
3813 temp
= getenv ("COMPILER_PATH");
3816 const char *startp
, *endp
;
3817 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3819 startp
= endp
= temp
;
3822 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3824 strncpy (nstore
, startp
, endp
- startp
);
3826 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3827 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3829 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3830 nstore
[endp
- startp
+ 1] = 0;
3833 nstore
[endp
- startp
] = 0;
3834 add_prefix (&exec_prefixes
, nstore
, 0,
3835 PREFIX_PRIORITY_LAST
, 0, 0);
3836 add_prefix (&include_prefixes
, nstore
, 0,
3837 PREFIX_PRIORITY_LAST
, 0, 0);
3840 endp
= startp
= endp
+ 1;
3847 temp
= getenv (LIBRARY_PATH_ENV
);
3848 if (temp
&& *cross_compile
== '0')
3850 const char *startp
, *endp
;
3851 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3853 startp
= endp
= temp
;
3856 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3858 strncpy (nstore
, startp
, endp
- startp
);
3860 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3861 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3863 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3864 nstore
[endp
- startp
+ 1] = 0;
3867 nstore
[endp
- startp
] = 0;
3868 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3869 PREFIX_PRIORITY_LAST
, 0, 1);
3872 endp
= startp
= endp
+ 1;
3879 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3880 temp
= getenv ("LPATH");
3881 if (temp
&& *cross_compile
== '0')
3883 const char *startp
, *endp
;
3884 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3886 startp
= endp
= temp
;
3889 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3891 strncpy (nstore
, startp
, endp
- startp
);
3893 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3894 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3896 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3897 nstore
[endp
- startp
+ 1] = 0;
3900 nstore
[endp
- startp
] = 0;
3901 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3902 PREFIX_PRIORITY_LAST
, 0, 1);
3905 endp
= startp
= endp
+ 1;
3912 /* Process the options and store input files and switches in their
3915 last_language_n_infiles
= -1;
3917 set_option_handlers (&handlers
);
3919 for (j
= 1; j
< decoded_options_count
; j
++)
3921 switch (decoded_options
[j
].opt_index
)
3933 for (j
= 1; j
< decoded_options_count
; j
++)
3935 if (decoded_options
[j
].opt_index
== OPT_SPECIAL_input_file
)
3937 const char *arg
= decoded_options
[j
].arg
;
3938 const char *p
= strrchr (arg
, '@');
3942 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3943 arg
= convert_filename (arg
, 0, access (arg
, F_OK
));
3945 /* For LTO static archive support we handle input file
3946 specifications that are composed of a filename and
3947 an offset like FNAME@OFFSET. */
3950 && sscanf (p
, "@%li%n", &offset
, &consumed
) >= 1
3951 && strlen (p
) == (unsigned int)consumed
)
3953 fname
= (char *)xmalloc (p
- arg
+ 1);
3954 memcpy (fname
, arg
, p
- arg
);
3955 fname
[p
- arg
] = '\0';
3956 /* Only accept non-stdin and existing FNAME parts, otherwise
3957 try with the full name. */
3958 if (strcmp (fname
, "-") == 0 || access (fname
, F_OK
) < 0)
3961 fname
= xstrdup (arg
);
3965 fname
= xstrdup (arg
);
3967 if (strcmp (fname
, "-") != 0 && access (fname
, F_OK
) < 0)
3968 perror_with_name (fname
);
3970 add_infile (arg
, spec_lang
);
3976 read_cmdline_option (&global_options
, &global_options_set
,
3977 decoded_options
+ j
, UNKNOWN_LOCATION
,
3978 CL_DRIVER
, &handlers
, global_dc
);
3981 /* If -save-temps=obj and -o name, create the prefix to use for %b.
3982 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
3983 if (save_temps_flag
== SAVE_TEMPS_OBJ
&& save_temps_prefix
!= NULL
)
3985 save_temps_length
= strlen (save_temps_prefix
);
3986 temp
= strrchr (lbasename (save_temps_prefix
), '.');
3989 save_temps_length
-= strlen (temp
);
3990 save_temps_prefix
[save_temps_length
] = '\0';
3994 else if (save_temps_prefix
!= NULL
)
3996 free (save_temps_prefix
);
3997 save_temps_prefix
= NULL
;
4000 if (save_temps_flag
&& use_pipes
)
4002 /* -save-temps overrides -pipe, so that temp files are produced */
4003 if (save_temps_flag
)
4004 warning (0, "-pipe ignored because -save-temps specified");
4010 const char *gcd
= getenv ("GCC_COMPARE_DEBUG");
4012 if (gcd
&& gcd
[0] == '-')
4015 compare_debug_opt
= gcd
;
4017 else if (gcd
&& *gcd
&& strcmp (gcd
, "0"))
4020 compare_debug_opt
= "-gtoggle";
4023 else if (compare_debug
< 0)
4026 gcc_assert (!compare_debug_opt
);
4029 /* Set up the search paths. We add directories that we expect to
4030 contain GNU Toolchain components before directories specified by
4031 the machine description so that we will find GNU components (like
4032 the GNU assembler) before those of the host system. */
4034 /* If we don't know where the toolchain has been installed, use the
4035 configured-in locations. */
4036 if (!gcc_exec_prefix
)
4039 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "GCC",
4040 PREFIX_PRIORITY_LAST
, 1, 0);
4041 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "BINUTILS",
4042 PREFIX_PRIORITY_LAST
, 2, 0);
4043 add_prefix (&exec_prefixes
, standard_exec_prefix
, "BINUTILS",
4044 PREFIX_PRIORITY_LAST
, 2, 0);
4046 add_prefix (&startfile_prefixes
, standard_exec_prefix
, "BINUTILS",
4047 PREFIX_PRIORITY_LAST
, 1, 0);
4050 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix
));
4051 tooldir_prefix2
= concat (tooldir_base_prefix
, spec_host_machine
,
4052 dir_separator_str
, NULL
);
4054 /* Look for tools relative to the location from which the driver is
4055 running, or, if that is not available, the configured prefix. */
4057 = concat (gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
4058 spec_host_machine
, dir_separator_str
, spec_version
,
4059 accel_dir_suffix
, dir_separator_str
, tooldir_prefix2
, NULL
);
4060 free (tooldir_prefix2
);
4062 add_prefix (&exec_prefixes
,
4063 concat (tooldir_prefix
, "bin", dir_separator_str
, NULL
),
4064 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 0);
4065 add_prefix (&startfile_prefixes
,
4066 concat (tooldir_prefix
, "lib", dir_separator_str
, NULL
),
4067 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 1);
4068 free (tooldir_prefix
);
4070 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
4071 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
4072 then consider it to relocate with the rest of the GCC installation
4073 if GCC_EXEC_PREFIX is set.
4074 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
4075 if (target_system_root
&& !target_system_root_changed
&& gcc_exec_prefix
)
4077 char *tmp_prefix
= get_relative_prefix (decoded_options
[0].arg
,
4078 standard_bindir_prefix
,
4079 target_system_root
);
4080 if (tmp_prefix
&& access_check (tmp_prefix
, F_OK
) == 0)
4082 target_system_root
= tmp_prefix
;
4083 target_system_root_changed
= 1;
4088 /* More prefixes are enabled in main, after we read the specs file
4089 and determine whether this is cross-compilation or not. */
4091 if (n_infiles
== last_language_n_infiles
&& spec_lang
!= 0)
4092 warning (0, "%<-x %s%> after last input file has no effect", spec_lang
);
4094 /* Synthesize -fcompare-debug flag from the GCC_COMPARE_DEBUG
4095 environment variable. */
4096 if (compare_debug
== 2 || compare_debug
== 3)
4098 const char *opt
= concat ("-fcompare-debug=", compare_debug_opt
, NULL
);
4099 save_switch (opt
, 0, NULL
, false, true);
4103 /* Ensure we only invoke each subprocess once. */
4104 if (print_subprocess_help
|| print_help_list
|| print_version
)
4108 /* Create a dummy input file, so that we can pass
4109 the help option on to the various sub-processes. */
4110 add_infile ("help-dummy", "c");
4114 switches
[n_switches
].part1
= 0;
4116 infiles
[n_infiles
].name
= 0;
4119 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4120 and place that in the environment. */
4123 set_collect_gcc_options (void)
4128 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4130 obstack_grow (&collect_obstack
, "COLLECT_GCC_OPTIONS=",
4131 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4134 for (i
= 0; (int) i
< n_switches
; i
++)
4136 const char *const *args
;
4139 obstack_grow (&collect_obstack
, " ", 1);
4143 /* Ignore elided switches. */
4144 if ((switches
[i
].live_cond
4145 & (SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
))
4149 obstack_grow (&collect_obstack
, "'-", 2);
4150 q
= switches
[i
].part1
;
4151 while ((p
= strchr (q
, '\'')))
4153 obstack_grow (&collect_obstack
, q
, p
- q
);
4154 obstack_grow (&collect_obstack
, "'\\''", 4);
4157 obstack_grow (&collect_obstack
, q
, strlen (q
));
4158 obstack_grow (&collect_obstack
, "'", 1);
4160 for (args
= switches
[i
].args
; args
&& *args
; args
++)
4162 obstack_grow (&collect_obstack
, " '", 2);
4164 while ((p
= strchr (q
, '\'')))
4166 obstack_grow (&collect_obstack
, q
, p
- q
);
4167 obstack_grow (&collect_obstack
, "'\\''", 4);
4170 obstack_grow (&collect_obstack
, q
, strlen (q
));
4171 obstack_grow (&collect_obstack
, "'", 1);
4174 obstack_grow (&collect_obstack
, "\0", 1);
4175 xputenv (XOBFINISH (&collect_obstack
, char *));
4178 /* Process a spec string, accumulating and running commands. */
4180 /* These variables describe the input file name.
4181 input_file_number is the index on outfiles of this file,
4182 so that the output file name can be stored for later use by %o.
4183 input_basename is the start of the part of the input file
4184 sans all directory names, and basename_length is the number
4185 of characters starting there excluding the suffix .c or whatever. */
4187 static const char *gcc_input_filename
;
4188 static int input_file_number
;
4189 size_t input_filename_length
;
4190 static int basename_length
;
4191 static int suffixed_basename_length
;
4192 static const char *input_basename
;
4193 static const char *input_suffix
;
4194 #ifndef HOST_LACKS_INODE_NUMBERS
4195 static struct stat input_stat
;
4197 static int input_stat_set
;
4199 /* The compiler used to process the current input file. */
4200 static struct compiler
*input_file_compiler
;
4202 /* These are variables used within do_spec and do_spec_1. */
4204 /* Nonzero if an arg has been started and not yet terminated
4205 (with space, tab or newline). */
4206 static int arg_going
;
4208 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4209 is a temporary file name. */
4210 static int delete_this_arg
;
4212 /* Nonzero means %w has been seen; the next arg to be terminated
4213 is the output file name of this compilation. */
4214 static int this_is_output_file
;
4216 /* Nonzero means %s has been seen; the next arg to be terminated
4217 is the name of a library file and we should try the standard
4218 search dirs for it. */
4219 static int this_is_library_file
;
4221 /* Nonzero means %T has been seen; the next arg to be terminated
4222 is the name of a linker script and we should try all of the
4223 standard search dirs for it. If it is found insert a --script
4224 command line switch and then substitute the full path in place,
4225 otherwise generate an error message. */
4226 static int this_is_linker_script
;
4228 /* Nonzero means that the input of this command is coming from a pipe. */
4229 static int input_from_pipe
;
4231 /* Nonnull means substitute this for any suffix when outputting a switches
4233 static const char *suffix_subst
;
4235 /* If there is an argument being accumulated, terminate it and store it. */
4238 end_going_arg (void)
4244 obstack_1grow (&obstack
, 0);
4245 string
= XOBFINISH (&obstack
, const char *);
4246 if (this_is_library_file
)
4247 string
= find_file (string
);
4248 if (this_is_linker_script
)
4250 char * full_script_path
= find_a_file (&startfile_prefixes
, string
, R_OK
, true);
4252 if (full_script_path
== NULL
)
4254 error ("unable to locate default linker script %qs in the library search paths", string
);
4255 /* Script was not found on search path. */
4258 store_arg ("--script", false, false);
4259 string
= full_script_path
;
4261 store_arg (string
, delete_this_arg
, this_is_output_file
);
4262 if (this_is_output_file
)
4263 outfiles
[input_file_number
] = string
;
4269 /* Parse the WRAPPER string which is a comma separated list of the command line
4270 and insert them into the beginning of argbuf. */
4273 insert_wrapper (const char *wrapper
)
4277 char *buf
= xstrdup (wrapper
);
4279 unsigned int old_length
= argbuf
.length ();
4287 while ((p
= strchr (p
, ',')) != NULL
);
4289 argbuf
.safe_grow (old_length
+ n
);
4290 memmove (argbuf
.address () + n
,
4292 old_length
* sizeof (const_char_p
));
4306 while ((p
= strchr (p
, ',')) != NULL
);
4307 gcc_assert (i
== n
);
4310 /* Process the spec SPEC and run the commands specified therein.
4311 Returns 0 if the spec is successfully processed; -1 if failed. */
4314 do_spec (const char *spec
)
4318 value
= do_spec_2 (spec
);
4320 /* Force out any unfinished command.
4321 If -pipe, this forces out the last command if it ended in `|'. */
4324 if (argbuf
.length () > 0
4325 && !strcmp (argbuf
.last (), "|"))
4328 set_collect_gcc_options ();
4330 if (argbuf
.length () > 0)
4338 do_spec_2 (const char *spec
)
4344 delete_this_arg
= 0;
4345 this_is_output_file
= 0;
4346 this_is_library_file
= 0;
4347 this_is_linker_script
= 0;
4348 input_from_pipe
= 0;
4349 suffix_subst
= NULL
;
4351 result
= do_spec_1 (spec
, 0, NULL
);
4359 /* Process the given spec string and add any new options to the end
4360 of the switches/n_switches array. */
4363 do_option_spec (const char *name
, const char *spec
)
4365 unsigned int i
, value_count
, value_len
;
4366 const char *p
, *q
, *value
;
4367 char *tmp_spec
, *tmp_spec_p
;
4369 if (configure_default_options
[0].name
== NULL
)
4372 for (i
= 0; i
< ARRAY_SIZE (configure_default_options
); i
++)
4373 if (strcmp (configure_default_options
[i
].name
, name
) == 0)
4375 if (i
== ARRAY_SIZE (configure_default_options
))
4378 value
= configure_default_options
[i
].value
;
4379 value_len
= strlen (value
);
4381 /* Compute the size of the final spec. */
4384 while ((p
= strstr (p
, "%(VALUE)")) != NULL
)
4390 /* Replace each %(VALUE) by the specified value. */
4391 tmp_spec
= (char *) alloca (strlen (spec
) + 1
4392 + value_count
* (value_len
- strlen ("%(VALUE)")));
4393 tmp_spec_p
= tmp_spec
;
4395 while ((p
= strstr (q
, "%(VALUE)")) != NULL
)
4397 memcpy (tmp_spec_p
, q
, p
- q
);
4398 tmp_spec_p
= tmp_spec_p
+ (p
- q
);
4399 memcpy (tmp_spec_p
, value
, value_len
);
4400 tmp_spec_p
+= value_len
;
4401 q
= p
+ strlen ("%(VALUE)");
4403 strcpy (tmp_spec_p
, q
);
4405 do_self_spec (tmp_spec
);
4408 /* Process the given spec string and add any new options to the end
4409 of the switches/n_switches array. */
4412 do_self_spec (const char *spec
)
4417 do_spec_1 (" ", 0, NULL
);
4419 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4420 do_self_specs adds the replacements to switches array, so it shouldn't
4421 be processed afterwards. */
4422 for (i
= 0; i
< n_switches
; i
++)
4423 if ((switches
[i
].live_cond
& SWITCH_IGNORE
))
4424 switches
[i
].live_cond
|= SWITCH_IGNORE_PERMANENTLY
;
4426 if (argbuf
.length () > 0)
4428 const char **argbuf_copy
;
4429 struct cl_decoded_option
*decoded_options
;
4430 struct cl_option_handlers handlers
;
4431 unsigned int decoded_options_count
;
4434 /* Create a copy of argbuf with a dummy argv[0] entry for
4435 decode_cmdline_options_to_array. */
4436 argbuf_copy
= XNEWVEC (const char *,
4437 argbuf
.length () + 1);
4438 argbuf_copy
[0] = "";
4439 memcpy (argbuf_copy
+ 1, argbuf
.address (),
4440 argbuf
.length () * sizeof (const char *));
4442 decode_cmdline_options_to_array (argbuf
.length () + 1,
4444 CL_DRIVER
, &decoded_options
,
4445 &decoded_options_count
);
4448 set_option_handlers (&handlers
);
4450 for (j
= 1; j
< decoded_options_count
; j
++)
4452 switch (decoded_options
[j
].opt_index
)
4454 case OPT_SPECIAL_input_file
:
4455 /* Specs should only generate options, not input
4457 if (strcmp (decoded_options
[j
].arg
, "-") != 0)
4458 fatal_error ("switch %qs does not start with %<-%>",
4459 decoded_options
[j
].arg
);
4461 fatal_error ("spec-generated switch is just %<-%>");
4464 case OPT_fcompare_debug_second
:
4465 case OPT_fcompare_debug
:
4466 case OPT_fcompare_debug_
:
4468 /* Avoid duplicate processing of some options from
4469 compare-debug specs; just save them here. */
4470 save_switch (decoded_options
[j
].canonical_option
[0],
4471 (decoded_options
[j
].canonical_option_num_elements
4473 &decoded_options
[j
].canonical_option
[1], false, true);
4477 read_cmdline_option (&global_options
, &global_options_set
,
4478 decoded_options
+ j
, UNKNOWN_LOCATION
,
4479 CL_DRIVER
, &handlers
, global_dc
);
4485 switches
[n_switches
].part1
= 0;
4489 /* Callback for processing %D and %I specs. */
4491 struct spec_path_info
{
4496 bool separate_options
;
4500 spec_path (char *path
, void *data
)
4502 struct spec_path_info
*info
= (struct spec_path_info
*) data
;
4506 if (info
->omit_relative
&& !IS_ABSOLUTE_PATH (path
))
4509 if (info
->append_len
!= 0)
4511 len
= strlen (path
);
4512 memcpy (path
+ len
, info
->append
, info
->append_len
+ 1);
4515 if (!is_directory (path
, true))
4518 do_spec_1 (info
->option
, 1, NULL
);
4519 if (info
->separate_options
)
4520 do_spec_1 (" ", 0, NULL
);
4522 if (info
->append_len
== 0)
4524 len
= strlen (path
);
4525 save
= path
[len
- 1];
4526 if (IS_DIR_SEPARATOR (path
[len
- 1]))
4527 path
[len
- 1] = '\0';
4530 do_spec_1 (path
, 1, NULL
);
4531 do_spec_1 (" ", 0, NULL
);
4533 /* Must not damage the original path. */
4534 if (info
->append_len
== 0)
4535 path
[len
- 1] = save
;
4540 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4544 create_at_file (char **argv
)
4546 char *temp_file
= make_temp_file ("");
4547 char *at_argument
= concat ("@", temp_file
, NULL
);
4548 FILE *f
= fopen (temp_file
, "w");
4552 fatal_error ("could not open temporary response file %s",
4555 status
= writeargv (argv
, f
);
4558 fatal_error ("could not write to temporary response file %s",
4561 status
= fclose (f
);
4564 fatal_error ("could not close temporary response file %s",
4567 store_arg (at_argument
, 0, 0);
4569 record_temp_file (temp_file
, !save_temps_flag
, !save_temps_flag
);
4572 /* True if we should compile INFILE. */
4575 compile_input_file_p (struct infile
*infile
)
4577 if ((!infile
->language
) || (infile
->language
[0] != '*'))
4578 if (infile
->incompiler
== input_file_compiler
)
4583 /* Process each member of VEC as a spec. */
4586 do_specs_vec (vec
<char_p
> vec
)
4591 FOR_EACH_VEC_ELT (vec
, ix
, opt
)
4593 do_spec_1 (opt
, 1, NULL
);
4594 /* Make each accumulated option a separate argument. */
4595 do_spec_1 (" ", 0, NULL
);
4599 /* Process the sub-spec SPEC as a portion of a larger spec.
4600 This is like processing a whole spec except that we do
4601 not initialize at the beginning and we do not supply a
4602 newline by default at the end.
4603 INSWITCH nonzero means don't process %-sequences in SPEC;
4604 in this case, % is treated as an ordinary character.
4605 This is used while substituting switches.
4606 INSWITCH nonzero also causes SPC not to terminate an argument.
4608 Value is zero unless a line was finished
4609 and the command on that line reported an error. */
4612 do_spec_1 (const char *spec
, int inswitch
, const char *soft_matched_part
)
4614 const char *p
= spec
;
4619 /* If it's an empty string argument to a switch, keep it as is. */
4620 if (inswitch
&& !*p
)
4624 /* If substituting a switch, treat all chars like letters.
4625 Otherwise, NL, SPC, TAB and % are special. */
4626 switch (inswitch
? 'a' : c
)
4631 if (argbuf
.length () > 0
4632 && !strcmp (argbuf
.last (), "|"))
4634 /* A `|' before the newline means use a pipe here,
4635 but only if -pipe was specified.
4636 Otherwise, execute now and don't pass the `|' as an arg. */
4639 input_from_pipe
= 1;
4646 set_collect_gcc_options ();
4648 if (argbuf
.length () > 0)
4654 /* Reinitialize for a new command, and for a new argument. */
4657 delete_this_arg
= 0;
4658 this_is_output_file
= 0;
4659 this_is_library_file
= 0;
4660 this_is_linker_script
= 0;
4661 input_from_pipe
= 0;
4668 obstack_1grow (&obstack
, c
);
4676 /* Reinitialize for a new argument. */
4677 delete_this_arg
= 0;
4678 this_is_output_file
= 0;
4679 this_is_library_file
= 0;
4680 this_is_linker_script
= 0;
4687 fatal_error ("spec %qs invalid", spec
);
4690 if (save_temps_length
)
4691 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4693 obstack_grow (&obstack
, input_basename
, basename_length
);
4694 if (compare_debug
< 0)
4695 obstack_grow (&obstack
, ".gk", 3);
4700 if (save_temps_length
)
4701 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4703 obstack_grow (&obstack
, input_basename
, suffixed_basename_length
);
4704 if (compare_debug
< 0)
4705 obstack_grow (&obstack
, ".gk", 3);
4710 delete_this_arg
= 2;
4713 /* Dump out the directories specified with LIBRARY_PATH,
4714 followed by the absolute directories
4715 that we search for startfiles. */
4718 struct spec_path_info info
;
4721 info
.append_len
= 0;
4722 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4723 /* Used on systems which record the specified -L dirs
4724 and use them to search for dynamic linking.
4725 Relative directories always come from -B,
4726 and it is better not to use them for searching
4727 at run time. In particular, stage1 loses. */
4728 info
.omit_relative
= true;
4730 info
.omit_relative
= false;
4732 info
.separate_options
= false;
4734 for_each_path (&startfile_prefixes
, true, 0, spec_path
, &info
);
4739 /* %efoo means report an error with `foo' as error message
4740 and don't execute any more commands for this file. */
4744 while (*p
!= 0 && *p
!= '\n')
4746 buf
= (char *) alloca (p
- q
+ 1);
4747 strncpy (buf
, q
, p
- q
);
4749 error ("%s", _(buf
));
4754 /* %nfoo means report a notice with `foo' on stderr. */
4758 while (*p
!= 0 && *p
!= '\n')
4760 buf
= (char *) alloca (p
- q
+ 1);
4761 strncpy (buf
, q
, p
- q
);
4763 inform (0, "%s", _(buf
));
4773 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4774 defined, and it is not a directory, and it is
4775 writable, use it. Otherwise, treat this like any
4776 other temporary file. */
4778 if ((!save_temps_flag
)
4779 && (stat (HOST_BIT_BUCKET
, &st
) == 0) && (!S_ISDIR (st
.st_mode
))
4780 && (access (HOST_BIT_BUCKET
, W_OK
) == 0))
4782 obstack_grow (&obstack
, HOST_BIT_BUCKET
,
4783 strlen (HOST_BIT_BUCKET
));
4784 delete_this_arg
= 0;
4789 goto create_temp_file
;
4793 obstack_1grow (&obstack
, '-');
4794 delete_this_arg
= 0;
4797 /* consume suffix */
4798 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4800 if (p
[0] == '%' && p
[1] == 'O')
4805 goto create_temp_file
;
4809 /* consume suffix */
4810 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4812 if (p
[0] == '%' && p
[1] == 'O')
4817 goto create_temp_file
;
4823 struct temp_name
*t
;
4825 const char *suffix
= p
;
4826 char *saved_suffix
= NULL
;
4828 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4830 suffix_length
= p
- suffix
;
4831 if (p
[0] == '%' && p
[1] == 'O')
4834 /* We don't support extra suffix characters after %O. */
4835 if (*p
== '.' || ISALNUM ((unsigned char) *p
))
4836 fatal_error ("spec %qs has invalid %<%%0%c%>", spec
, *p
);
4837 if (suffix_length
== 0)
4838 suffix
= TARGET_OBJECT_SUFFIX
;
4842 = XNEWVEC (char, suffix_length
4843 + strlen (TARGET_OBJECT_SUFFIX
));
4844 strncpy (saved_suffix
, suffix
, suffix_length
);
4845 strcpy (saved_suffix
+ suffix_length
,
4846 TARGET_OBJECT_SUFFIX
);
4848 suffix_length
+= strlen (TARGET_OBJECT_SUFFIX
);
4851 if (compare_debug
< 0)
4853 suffix
= concat (".gk", suffix
, NULL
);
4857 /* If -save-temps=obj and -o were specified, use that for the
4859 if (save_temps_length
)
4862 temp_filename_length
4863 = save_temps_length
+ suffix_length
+ 1;
4864 tmp
= (char *) alloca (temp_filename_length
);
4865 memcpy (tmp
, save_temps_prefix
, save_temps_length
);
4866 memcpy (tmp
+ save_temps_length
, suffix
, suffix_length
);
4867 tmp
[save_temps_length
+ suffix_length
] = '\0';
4868 temp_filename
= save_string (tmp
, save_temps_length
4870 obstack_grow (&obstack
, temp_filename
,
4871 temp_filename_length
);
4873 delete_this_arg
= 0;
4877 /* If the gcc_input_filename has the same suffix specified
4878 for the %g, %u, or %U, and -save-temps is specified,
4879 we could end up using that file as an intermediate
4880 thus clobbering the user's source file (.e.g.,
4881 gcc -save-temps foo.s would clobber foo.s with the
4882 output of cpp0). So check for this condition and
4883 generate a temp file as the intermediate. */
4885 if (save_temps_flag
)
4888 temp_filename_length
= basename_length
+ suffix_length
+ 1;
4889 tmp
= (char *) alloca (temp_filename_length
);
4890 memcpy (tmp
, input_basename
, basename_length
);
4891 memcpy (tmp
+ basename_length
, suffix
, suffix_length
);
4892 tmp
[basename_length
+ suffix_length
] = '\0';
4893 temp_filename
= tmp
;
4895 if (filename_cmp (temp_filename
, gcc_input_filename
) != 0)
4897 #ifndef HOST_LACKS_INODE_NUMBERS
4898 struct stat st_temp
;
4900 /* Note, set_input() resets input_stat_set to 0. */
4901 if (input_stat_set
== 0)
4903 input_stat_set
= stat (gcc_input_filename
,
4905 if (input_stat_set
>= 0)
4909 /* If we have the stat for the gcc_input_filename
4910 and we can do the stat for the temp_filename
4911 then the they could still refer to the same
4912 file if st_dev/st_ino's are the same. */
4913 if (input_stat_set
!= 1
4914 || stat (temp_filename
, &st_temp
) < 0
4915 || input_stat
.st_dev
!= st_temp
.st_dev
4916 || input_stat
.st_ino
!= st_temp
.st_ino
)
4918 /* Just compare canonical pathnames. */
4919 char* input_realname
= lrealpath (gcc_input_filename
);
4920 char* temp_realname
= lrealpath (temp_filename
);
4921 bool files_differ
= filename_cmp (input_realname
, temp_realname
);
4922 free (input_realname
);
4923 free (temp_realname
);
4927 temp_filename
= save_string (temp_filename
,
4928 temp_filename_length
+ 1);
4929 obstack_grow (&obstack
, temp_filename
,
4930 temp_filename_length
);
4932 delete_this_arg
= 0;
4938 /* See if we already have an association of %g/%u/%U and
4940 for (t
= temp_names
; t
; t
= t
->next
)
4941 if (t
->length
== suffix_length
4942 && strncmp (t
->suffix
, suffix
, suffix_length
) == 0
4943 && t
->unique
== (c
== 'u' || c
== 'U' || c
== 'j'))
4946 /* Make a new association if needed. %u and %j
4948 if (t
== 0 || c
== 'u' || c
== 'j')
4952 t
= XNEW (struct temp_name
);
4953 t
->next
= temp_names
;
4956 t
->length
= suffix_length
;
4959 t
->suffix
= saved_suffix
;
4960 saved_suffix
= NULL
;
4963 t
->suffix
= save_string (suffix
, suffix_length
);
4964 t
->unique
= (c
== 'u' || c
== 'U' || c
== 'j');
4965 temp_filename
= make_temp_file (t
->suffix
);
4966 temp_filename_length
= strlen (temp_filename
);
4967 t
->filename
= temp_filename
;
4968 t
->filename_length
= temp_filename_length
;
4971 free (saved_suffix
);
4973 obstack_grow (&obstack
, t
->filename
, t
->filename_length
);
4974 delete_this_arg
= 1;
4982 if (at_file_supplied
)
4984 /* We are going to expand `%i' to `@FILE', where FILE
4985 is a newly-created temporary filename. The filenames
4986 that would usually be expanded in place of %o will be
4987 written to the temporary file. */
4992 for (i
= 0; i
< n_infiles
; i
++)
4993 if (compile_input_file_p (&infiles
[i
]))
4996 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
4998 /* Copy the strings over. */
4999 for (i
= 0, j
= 0; i
< n_infiles
; i
++)
5000 if (compile_input_file_p (&infiles
[i
]))
5002 argv
[j
] = CONST_CAST (char *, infiles
[i
].name
);
5003 infiles
[i
].compiled
= true;
5008 create_at_file (argv
);
5011 for (i
= 0; (int) i
< n_infiles
; i
++)
5012 if (compile_input_file_p (&infiles
[i
]))
5014 store_arg (infiles
[i
].name
, 0, 0);
5015 infiles
[i
].compiled
= true;
5020 obstack_grow (&obstack
, gcc_input_filename
,
5021 input_filename_length
);
5028 struct spec_path_info info
;
5032 do_spec_1 ("-imultilib", 1, NULL
);
5033 /* Make this a separate argument. */
5034 do_spec_1 (" ", 0, NULL
);
5035 do_spec_1 (multilib_dir
, 1, NULL
);
5036 do_spec_1 (" ", 0, NULL
);
5041 do_spec_1 ("-imultiarch", 1, NULL
);
5042 /* Make this a separate argument. */
5043 do_spec_1 (" ", 0, NULL
);
5044 do_spec_1 (multiarch_dir
, 1, NULL
);
5045 do_spec_1 (" ", 0, NULL
);
5048 if (gcc_exec_prefix
)
5050 do_spec_1 ("-iprefix", 1, NULL
);
5051 /* Make this a separate argument. */
5052 do_spec_1 (" ", 0, NULL
);
5053 do_spec_1 (gcc_exec_prefix
, 1, NULL
);
5054 do_spec_1 (" ", 0, NULL
);
5057 if (target_system_root_changed
||
5058 (target_system_root
&& target_sysroot_hdrs_suffix
))
5060 do_spec_1 ("-isysroot", 1, NULL
);
5061 /* Make this a separate argument. */
5062 do_spec_1 (" ", 0, NULL
);
5063 do_spec_1 (target_system_root
, 1, NULL
);
5064 if (target_sysroot_hdrs_suffix
)
5065 do_spec_1 (target_sysroot_hdrs_suffix
, 1, NULL
);
5066 do_spec_1 (" ", 0, NULL
);
5069 info
.option
= "-isystem";
5070 info
.append
= "include";
5071 info
.append_len
= strlen (info
.append
);
5072 info
.omit_relative
= false;
5073 info
.separate_options
= true;
5075 for_each_path (&include_prefixes
, false, info
.append_len
,
5078 info
.append
= "include-fixed";
5079 if (*sysroot_hdrs_suffix_spec
)
5080 info
.append
= concat (info
.append
, dir_separator_str
,
5081 multilib_dir
, NULL
);
5082 info
.append_len
= strlen (info
.append
);
5083 for_each_path (&include_prefixes
, false, info
.append_len
,
5090 int max
= n_infiles
;
5091 max
+= lang_specific_extra_outfiles
;
5093 if (HAVE_GNU_LD
&& at_file_supplied
)
5095 /* We are going to expand `%o' to `@FILE', where FILE
5096 is a newly-created temporary filename. The filenames
5097 that would usually be expanded in place of %o will be
5098 written to the temporary file. */
5103 /* Convert OUTFILES into a form suitable for writeargv. */
5105 /* Determine how many are non-NULL. */
5106 for (n_files
= 0, i
= 0; i
< max
; i
++)
5107 n_files
+= outfiles
[i
] != NULL
;
5109 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
5111 /* Copy the strings over. */
5112 for (i
= 0, j
= 0; i
< max
; i
++)
5115 argv
[j
] = CONST_CAST (char *, outfiles
[i
]);
5120 create_at_file (argv
);
5123 for (i
= 0; i
< max
; i
++)
5125 store_arg (outfiles
[i
], 0, 0);
5130 obstack_grow (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
5135 this_is_library_file
= 1;
5139 this_is_linker_script
= 1;
5143 outfiles
[input_file_number
] = NULL
;
5147 this_is_output_file
= 1;
5152 unsigned int cur_index
= argbuf
.length ();
5153 /* Handle the {...} following the %W. */
5155 fatal_error ("spec %qs has invalid %<%%W%c%>", spec
, *p
);
5156 p
= handle_braces (p
+ 1);
5160 /* If any args were output, mark the last one for deletion
5162 if (argbuf
.length () != cur_index
)
5163 record_temp_file (argbuf
.last (), 0, 1);
5167 /* %x{OPTION} records OPTION for %X to output. */
5175 /* Skip past the option value and make a copy. */
5177 fatal_error ("spec %qs has invalid %<%%x%c%>", spec
, *p
);
5180 string
= save_string (p1
+ 1, p
- p1
- 2);
5182 /* See if we already recorded this option. */
5183 FOR_EACH_VEC_ELT (linker_options
, ix
, opt
)
5184 if (! strcmp (string
, opt
))
5190 /* This option is new; add it. */
5191 add_linker_option (string
, strlen (string
));
5196 /* Dump out the options accumulated previously using %x. */
5198 do_specs_vec (linker_options
);
5201 /* Dump out the options accumulated previously using -Wa,. */
5203 do_specs_vec (assembler_options
);
5206 /* Dump out the options accumulated previously using -Wp,. */
5208 do_specs_vec (preprocessor_options
);
5211 /* Here are digits and numbers that just process
5212 a certain constant string as a spec. */
5215 value
= do_spec_1 (cc1_spec
, 0, NULL
);
5221 value
= do_spec_1 (cc1plus_spec
, 0, NULL
);
5227 value
= do_spec_1 (asm_spec
, 0, NULL
);
5233 value
= do_spec_1 (asm_final_spec
, 0, NULL
);
5240 const char *const spec
5241 = (input_file_compiler
->cpp_spec
5242 ? input_file_compiler
->cpp_spec
5244 value
= do_spec_1 (spec
, 0, NULL
);
5251 value
= do_spec_1 (endfile_spec
, 0, NULL
);
5257 value
= do_spec_1 (link_spec
, 0, NULL
);
5263 value
= do_spec_1 (lib_spec
, 0, NULL
);
5269 if (multilib_os_dir
== NULL
)
5270 obstack_1grow (&obstack
, '.');
5272 obstack_grow (&obstack
, multilib_os_dir
,
5273 strlen (multilib_os_dir
));
5277 value
= do_spec_1 (libgcc_spec
, 0, NULL
);
5283 /* We assume there is a directory
5284 separator at the end of this string. */
5285 if (target_system_root
)
5287 obstack_grow (&obstack
, target_system_root
,
5288 strlen (target_system_root
));
5289 if (target_sysroot_suffix
)
5290 obstack_grow (&obstack
, target_sysroot_suffix
,
5291 strlen (target_sysroot_suffix
));
5296 value
= do_spec_1 (startfile_spec
, 0, NULL
);
5301 /* Here we define characters other than letters and digits. */
5304 p
= handle_braces (p
);
5310 p
= handle_spec_function (p
, NULL
);
5316 obstack_1grow (&obstack
, '%');
5323 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '%')
5325 suffix_subst
= save_string (p
- 1, len
+ 1);
5330 /* Henceforth ignore the option(s) matching the pattern
5336 int have_wildcard
= 0;
5341 switch_option
= SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
;
5343 switch_option
= SWITCH_IGNORE
;
5345 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '\t')
5348 if (p
[len
-1] == '*')
5351 for (i
= 0; i
< n_switches
; i
++)
5352 if (!strncmp (switches
[i
].part1
, p
, len
- have_wildcard
)
5353 && (have_wildcard
|| switches
[i
].part1
[len
] == '\0'))
5355 switches
[i
].live_cond
|= switch_option
;
5356 /* User switch be validated from validate_all_switches.
5357 when the definition is seen from the spec file.
5358 If not defined anywhere, will be rejected. */
5359 if (switches
[i
].known
)
5360 switches
[i
].validated
= true;
5368 if (soft_matched_part
)
5370 if (soft_matched_part
[0])
5371 do_spec_1 (soft_matched_part
, 1, NULL
);
5372 /* Only insert a space after the substitution if it is at the
5373 end of the current sequence. So if:
5375 "%{foo=*:bar%*}%{foo=*:one%*two}"
5377 matches -foo=hello then it will produce:
5379 barhello onehellotwo
5381 if (*p
== 0 || *p
== '}')
5382 do_spec_1 (" ", 0, NULL
);
5385 /* Catch the case where a spec string contains something like
5386 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5387 hand side of the :. */
5388 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5391 /* Process a string found as the value of a spec given by name.
5392 This feature allows individual machine descriptions
5393 to add and use their own specs. */
5396 const char *name
= p
;
5397 struct spec_list
*sl
;
5400 /* The string after the S/P is the name of a spec that is to be
5402 while (*p
&& *p
!= ')')
5405 /* See if it's in the list. */
5406 for (len
= p
- name
, sl
= specs
; sl
; sl
= sl
->next
)
5407 if (sl
->name_len
== len
&& !strncmp (sl
->name
, name
, len
))
5409 name
= *(sl
->ptr_spec
);
5411 fnotice (stderr
, "Processing spec (%s), which is '%s'\n",
5419 value
= do_spec_1 (name
, 0, NULL
);
5424 /* Discard the closing paren. */
5431 error ("spec failure: unrecognized spec option %qc", c
);
5437 /* Backslash: treat next character as ordinary. */
5442 /* Ordinary character: put it into the current argument. */
5443 obstack_1grow (&obstack
, c
);
5447 /* End of string. If we are processing a spec function, we need to
5448 end any pending argument. */
5449 if (processing_spec_function
)
5455 /* Look up a spec function. */
5457 static const struct spec_function
*
5458 lookup_spec_function (const char *name
)
5460 const struct spec_function
*sf
;
5462 for (sf
= static_spec_functions
; sf
->name
!= NULL
; sf
++)
5463 if (strcmp (sf
->name
, name
) == 0)
5469 /* Evaluate a spec function. */
5472 eval_spec_function (const char *func
, const char *args
)
5474 const struct spec_function
*sf
;
5475 const char *funcval
;
5477 /* Saved spec processing context. */
5478 vec
<const_char_p
> save_argbuf
;
5481 int save_delete_this_arg
;
5482 int save_this_is_output_file
;
5483 int save_this_is_library_file
;
5484 int save_input_from_pipe
;
5485 int save_this_is_linker_script
;
5486 const char *save_suffix_subst
;
5488 int save_growing_size
;
5489 void *save_growing_value
;
5491 sf
= lookup_spec_function (func
);
5493 fatal_error ("unknown spec function %qs", func
);
5495 /* Push the spec processing context. */
5496 save_argbuf
= argbuf
;
5498 save_arg_going
= arg_going
;
5499 save_delete_this_arg
= delete_this_arg
;
5500 save_this_is_output_file
= this_is_output_file
;
5501 save_this_is_library_file
= this_is_library_file
;
5502 save_this_is_linker_script
= this_is_linker_script
;
5503 save_input_from_pipe
= input_from_pipe
;
5504 save_suffix_subst
= suffix_subst
;
5506 /* If we have some object growing now, finalize it so the args and function
5507 eval proceed from a cleared context. This is needed to prevent the first
5508 constructed arg from mistakenly including the growing value. We'll push
5509 this value back on the obstack once the function evaluation is done, to
5510 restore a consistent processing context for our caller. This is fine as
5511 the address of growing objects isn't guaranteed to remain stable until
5512 they are finalized, and we expect this situation to be rare enough for
5513 the extra copy not to be an issue. */
5514 save_growing_size
= obstack_object_size (&obstack
);
5515 if (save_growing_size
> 0)
5516 save_growing_value
= obstack_finish (&obstack
);
5518 /* Create a new spec processing context, and build the function
5522 if (do_spec_2 (args
) < 0)
5523 fatal_error ("error in args to spec function %qs", func
);
5525 /* argbuf_index is an index for the next argument to be inserted, and
5526 so contains the count of the args already inserted. */
5528 funcval
= (*sf
->func
) (argbuf
.length (),
5531 /* Pop the spec processing context. */
5533 argbuf
= save_argbuf
;
5535 arg_going
= save_arg_going
;
5536 delete_this_arg
= save_delete_this_arg
;
5537 this_is_output_file
= save_this_is_output_file
;
5538 this_is_library_file
= save_this_is_library_file
;
5539 this_is_linker_script
= save_this_is_linker_script
;
5540 input_from_pipe
= save_input_from_pipe
;
5541 suffix_subst
= save_suffix_subst
;
5543 if (save_growing_size
> 0)
5544 obstack_grow (&obstack
, save_growing_value
, save_growing_size
);
5549 /* Handle a spec function call of the form:
5553 ARGS is processed as a spec in a separate context and split into an
5554 argument vector in the normal fashion. The function returns a string
5555 containing a spec which we then process in the caller's context, or
5556 NULL if no processing is required.
5558 If RETVAL_NONNULL is not NULL, then store a bool whether function
5559 returned non-NULL. */
5562 handle_spec_function (const char *p
, bool *retval_nonnull
)
5565 const char *endp
, *funcval
;
5568 processing_spec_function
++;
5570 /* Get the function name. */
5571 for (endp
= p
; *endp
!= '\0'; endp
++)
5573 if (*endp
== '(') /* ) */
5575 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5576 if (!ISALNUM (*endp
) && !(*endp
== '-' || *endp
== '_'))
5577 fatal_error ("malformed spec function name");
5579 if (*endp
!= '(') /* ) */
5580 fatal_error ("no arguments for spec function");
5581 func
= save_string (p
, endp
- p
);
5584 /* Get the arguments. */
5585 for (count
= 0; *endp
!= '\0'; endp
++)
5594 else if (*endp
== '(') /* ) */
5599 fatal_error ("malformed spec function arguments");
5600 args
= save_string (p
, endp
- p
);
5603 /* p now points to just past the end of the spec function expression. */
5605 funcval
= eval_spec_function (func
, args
);
5606 if (funcval
!= NULL
&& do_spec_1 (funcval
, 0, NULL
) < 0)
5609 *retval_nonnull
= funcval
!= NULL
;
5614 processing_spec_function
--;
5619 /* Inline subroutine of handle_braces. Returns true if the current
5620 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5622 input_suffix_matches (const char *atom
, const char *end_atom
)
5624 return (input_suffix
5625 && !strncmp (input_suffix
, atom
, end_atom
- atom
)
5626 && input_suffix
[end_atom
- atom
] == '\0');
5629 /* Subroutine of handle_braces. Returns true if the current
5630 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5632 input_spec_matches (const char *atom
, const char *end_atom
)
5634 return (input_file_compiler
5635 && input_file_compiler
->suffix
5636 && input_file_compiler
->suffix
[0] != '\0'
5637 && !strncmp (input_file_compiler
->suffix
+ 1, atom
,
5639 && input_file_compiler
->suffix
[end_atom
- atom
+ 1] == '\0');
5642 /* Subroutine of handle_braces. Returns true if a switch
5643 matching the atom bracketed by ATOM and END_ATOM appeared on the
5646 switch_matches (const char *atom
, const char *end_atom
, int starred
)
5649 int len
= end_atom
- atom
;
5650 int plen
= starred
? len
: -1;
5652 for (i
= 0; i
< n_switches
; i
++)
5653 if (!strncmp (switches
[i
].part1
, atom
, len
)
5654 && (starred
|| switches
[i
].part1
[len
] == '\0')
5655 && check_live_switch (i
, plen
))
5658 /* Check if a switch with separated form matching the atom.
5659 We check -D and -U switches. */
5660 else if (switches
[i
].args
!= 0)
5662 if ((*switches
[i
].part1
== 'D' || *switches
[i
].part1
== 'U')
5663 && *switches
[i
].part1
== atom
[0])
5665 if (!strncmp (switches
[i
].args
[0], &atom
[1], len
- 1)
5666 && (starred
|| (switches
[i
].part1
[1] == '\0'
5667 && switches
[i
].args
[0][len
- 1] == '\0'))
5668 && check_live_switch (i
, (starred
? 1 : -1)))
5676 /* Inline subroutine of handle_braces. Mark all of the switches which
5677 match ATOM (extends to END_ATOM; STARRED indicates whether there
5678 was a star after the atom) for later processing. */
5680 mark_matching_switches (const char *atom
, const char *end_atom
, int starred
)
5683 int len
= end_atom
- atom
;
5684 int plen
= starred
? len
: -1;
5686 for (i
= 0; i
< n_switches
; i
++)
5687 if (!strncmp (switches
[i
].part1
, atom
, len
)
5688 && (starred
|| switches
[i
].part1
[len
] == '\0')
5689 && check_live_switch (i
, plen
))
5690 switches
[i
].ordering
= 1;
5693 /* Inline subroutine of handle_braces. Process all the currently
5694 marked switches through give_switch, and clear the marks. */
5696 process_marked_switches (void)
5700 for (i
= 0; i
< n_switches
; i
++)
5701 if (switches
[i
].ordering
== 1)
5703 switches
[i
].ordering
= 0;
5708 /* Handle a %{ ... } construct. P points just inside the leading {.
5709 Returns a pointer one past the end of the brace block, or 0
5710 if we call do_spec_1 and that returns -1. */
5713 handle_braces (const char *p
)
5715 const char *atom
, *end_atom
;
5716 const char *d_atom
= NULL
, *d_end_atom
= NULL
;
5717 const char *orig
= p
;
5725 bool a_must_be_last
= false;
5726 bool ordered_set
= false;
5727 bool disjunct_set
= false;
5728 bool disj_matched
= false;
5729 bool disj_starred
= true;
5730 bool n_way_choice
= false;
5731 bool n_way_matched
= false;
5733 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5740 /* Scan one "atom" (S in the description above of %{}, possibly
5741 with '!', '.', '@', ',', or '*' modifiers). */
5743 a_is_suffix
= false;
5744 a_is_starred
= false;
5745 a_is_negated
= false;
5746 a_is_spectype
= false;
5750 p
++, a_is_negated
= true;
5753 if (*p
== '%' && p
[1] == ':')
5757 p
= handle_spec_function (p
+ 2, &a_matched
);
5762 p
++, a_is_suffix
= true;
5764 p
++, a_is_spectype
= true;
5767 while (ISIDNUM (*p
) || *p
== '-' || *p
== '+' || *p
== '='
5768 || *p
== ',' || *p
== '.' || *p
== '@')
5773 p
++, a_is_starred
= 1;
5780 /* Substitute the switch(es) indicated by the current atom. */
5782 if (disjunct_set
|| n_way_choice
|| a_is_negated
|| a_is_suffix
5783 || a_is_spectype
|| atom
== end_atom
)
5786 mark_matching_switches (atom
, end_atom
, a_is_starred
);
5789 process_marked_switches ();
5793 /* Substitute some text if the current atom appears as a switch
5795 disjunct_set
= true;
5799 if (atom
&& atom
== end_atom
)
5801 if (!n_way_choice
|| disj_matched
|| *p
== '|'
5802 || a_is_negated
|| a_is_suffix
|| a_is_spectype
5806 /* An empty term may appear as the last choice of an
5807 N-way choice set; it means "otherwise". */
5808 a_must_be_last
= true;
5809 disj_matched
= !n_way_matched
;
5810 disj_starred
= false;
5814 if ((a_is_suffix
|| a_is_spectype
) && a_is_starred
)
5818 disj_starred
= false;
5820 /* Don't bother testing this atom if we already have a
5822 if (!disj_matched
&& !n_way_matched
)
5825 /* a_matched is already set by handle_spec_function. */;
5826 else if (a_is_suffix
)
5827 a_matched
= input_suffix_matches (atom
, end_atom
);
5828 else if (a_is_spectype
)
5829 a_matched
= input_spec_matches (atom
, end_atom
);
5831 a_matched
= switch_matches (atom
, end_atom
, a_is_starred
);
5833 if (a_matched
!= a_is_negated
)
5835 disj_matched
= true;
5837 d_end_atom
= end_atom
;
5844 /* Found the body, that is, the text to substitute if the
5845 current disjunction matches. */
5846 p
= process_brace_body (p
+ 1, d_atom
, d_end_atom
, disj_starred
,
5847 disj_matched
&& !n_way_matched
);
5851 /* If we have an N-way choice, reset state for the next
5855 n_way_choice
= true;
5856 n_way_matched
|= disj_matched
;
5857 disj_matched
= false;
5858 disj_starred
= true;
5859 d_atom
= d_end_atom
= NULL
;
5868 while (*p
++ != '}');
5873 fatal_error ("braced spec %qs is invalid at %qc", orig
, *p
);
5878 /* Subroutine of handle_braces. Scan and process a brace substitution body
5879 (X in the description of %{} syntax). P points one past the colon;
5880 ATOM and END_ATOM bracket the first atom which was found to be true
5881 (present) in the current disjunction; STARRED indicates whether all
5882 the atoms in the current disjunction were starred (for syntax validation);
5883 MATCHED indicates whether the disjunction matched or not, and therefore
5884 whether or not the body is to be processed through do_spec_1 or just
5885 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5889 process_brace_body (const char *p
, const char *atom
, const char *end_atom
,
5890 int starred
, int matched
)
5892 const char *body
, *end_body
;
5893 unsigned int nesting_level
;
5894 bool have_subst
= false;
5896 /* Locate the closing } or ;, honoring nested braces.
5897 Trim trailing whitespace. */
5906 if (!--nesting_level
)
5909 else if (*p
== ';' && nesting_level
== 1)
5911 else if (*p
== '%' && p
[1] == '*' && nesting_level
== 1)
5913 else if (*p
== '\0')
5919 while (end_body
[-1] == ' ' || end_body
[-1] == '\t')
5922 if (have_subst
&& !starred
)
5927 /* Copy the substitution body to permanent storage and execute it.
5928 If have_subst is false, this is a simple matter of running the
5929 body through do_spec_1... */
5930 char *string
= save_string (body
, end_body
- body
);
5933 if (do_spec_1 (string
, 0, NULL
) < 0)
5938 /* ... but if have_subst is true, we have to process the
5939 body once for each matching switch, with %* set to the
5940 variant part of the switch. */
5941 unsigned int hard_match_len
= end_atom
- atom
;
5944 for (i
= 0; i
< n_switches
; i
++)
5945 if (!strncmp (switches
[i
].part1
, atom
, hard_match_len
)
5946 && check_live_switch (i
, hard_match_len
))
5948 if (do_spec_1 (string
, 0,
5949 &switches
[i
].part1
[hard_match_len
]) < 0)
5951 /* Pass any arguments this switch has. */
5953 suffix_subst
= NULL
;
5961 fatal_error ("braced spec body %qs is invalid", body
);
5964 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5965 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5966 spec, or -1 if either exact match or %* is used.
5968 A -O switch is obsoleted by a later -O switch. A -f, -g, -m, or -W switch
5969 whose value does not begin with "no-" is obsoleted by the same value
5970 with the "no-", similarly for a switch with the "no-" prefix. */
5973 check_live_switch (int switchnum
, int prefix_length
)
5975 const char *name
= switches
[switchnum
].part1
;
5978 /* If we already processed this switch and determined if it was
5979 live or not, return our past determination. */
5980 if (switches
[switchnum
].live_cond
!= 0)
5981 return ((switches
[switchnum
].live_cond
& SWITCH_LIVE
) != 0
5982 && (switches
[switchnum
].live_cond
& SWITCH_FALSE
) == 0
5983 && (switches
[switchnum
].live_cond
& SWITCH_IGNORE_PERMANENTLY
)
5986 /* In the common case of {<at-most-one-letter>*}, a negating
5987 switch would always match, so ignore that case. We will just
5988 send the conflicting switches to the compiler phase. */
5989 if (prefix_length
>= 0 && prefix_length
<= 1)
5992 /* Now search for duplicate in a manner that depends on the name. */
5996 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
5997 if (switches
[i
].part1
[0] == 'O')
5999 switches
[switchnum
].validated
= true;
6000 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
6005 case 'W': case 'f': case 'm': case 'g':
6006 if (! strncmp (name
+ 1, "no-", 3))
6008 /* We have Xno-YYY, search for XYYY. */
6009 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
6010 if (switches
[i
].part1
[0] == name
[0]
6011 && ! strcmp (&switches
[i
].part1
[1], &name
[4]))
6013 /* --specs are validated with the validate_switches mechanism. */
6014 if (switches
[switchnum
].known
)
6015 switches
[switchnum
].validated
= true;
6016 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
6022 /* We have XYYY, search for Xno-YYY. */
6023 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
6024 if (switches
[i
].part1
[0] == name
[0]
6025 && switches
[i
].part1
[1] == 'n'
6026 && switches
[i
].part1
[2] == 'o'
6027 && switches
[i
].part1
[3] == '-'
6028 && !strcmp (&switches
[i
].part1
[4], &name
[1]))
6030 /* --specs are validated with the validate_switches mechanism. */
6031 if (switches
[switchnum
].known
)
6032 switches
[switchnum
].validated
= true;
6033 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
6040 /* Otherwise the switch is live. */
6041 switches
[switchnum
].live_cond
|= SWITCH_LIVE
;
6045 /* Pass a switch to the current accumulating command
6046 in the same form that we received it.
6047 SWITCHNUM identifies the switch; it is an index into
6048 the vector of switches gcc received, which is `switches'.
6049 This cannot fail since it never finishes a command line.
6051 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
6054 give_switch (int switchnum
, int omit_first_word
)
6056 if ((switches
[switchnum
].live_cond
& SWITCH_IGNORE
) != 0)
6059 if (!omit_first_word
)
6061 do_spec_1 ("-", 0, NULL
);
6062 do_spec_1 (switches
[switchnum
].part1
, 1, NULL
);
6065 if (switches
[switchnum
].args
!= 0)
6068 for (p
= switches
[switchnum
].args
; *p
; p
++)
6070 const char *arg
= *p
;
6072 do_spec_1 (" ", 0, NULL
);
6075 unsigned length
= strlen (arg
);
6078 while (length
-- && !IS_DIR_SEPARATOR (arg
[length
]))
6079 if (arg
[length
] == '.')
6081 (CONST_CAST (char *, arg
))[length
] = 0;
6085 do_spec_1 (arg
, 1, NULL
);
6087 (CONST_CAST (char *, arg
))[length
] = '.';
6088 do_spec_1 (suffix_subst
, 1, NULL
);
6091 do_spec_1 (arg
, 1, NULL
);
6095 do_spec_1 (" ", 0, NULL
);
6096 switches
[switchnum
].validated
= true;
6099 /* Search for a file named NAME trying various prefixes including the
6100 user's -B prefix and some standard ones.
6101 Return the absolute file name found. If nothing is found, return NAME. */
6104 find_file (const char *name
)
6106 char *newname
= find_a_file (&startfile_prefixes
, name
, R_OK
, true);
6107 return newname
? newname
: name
;
6110 /* Determine whether a directory exists. If LINKER, return 0 for
6111 certain fixed names not needed by the linker. */
6114 is_directory (const char *path1
, bool linker
)
6121 /* Ensure the string ends with "/.". The resulting path will be a
6122 directory even if the given path is a symbolic link. */
6123 len1
= strlen (path1
);
6124 path
= (char *) alloca (3 + len1
);
6125 memcpy (path
, path1
, len1
);
6127 if (!IS_DIR_SEPARATOR (cp
[-1]))
6128 *cp
++ = DIR_SEPARATOR
;
6132 /* Exclude directories that the linker is known to search. */
6134 && IS_DIR_SEPARATOR (path
[0])
6136 && filename_ncmp (path
+ 1, "lib", 3) == 0)
6138 && filename_ncmp (path
+ 1, "usr", 3) == 0
6139 && IS_DIR_SEPARATOR (path
[4])
6140 && filename_ncmp (path
+ 5, "lib", 3) == 0)))
6143 return (stat (path
, &st
) >= 0 && S_ISDIR (st
.st_mode
));
6146 /* Set up the various global variables to indicate that we're processing
6147 the input file named FILENAME. */
6150 set_input (const char *filename
)
6154 gcc_input_filename
= filename
;
6155 input_filename_length
= strlen (gcc_input_filename
);
6156 input_basename
= lbasename (gcc_input_filename
);
6158 /* Find a suffix starting with the last period,
6159 and set basename_length to exclude that suffix. */
6160 basename_length
= strlen (input_basename
);
6161 suffixed_basename_length
= basename_length
;
6162 p
= input_basename
+ basename_length
;
6163 while (p
!= input_basename
&& *p
!= '.')
6165 if (*p
== '.' && p
!= input_basename
)
6167 basename_length
= p
- input_basename
;
6168 input_suffix
= p
+ 1;
6173 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
6174 we will need to do a stat on the gcc_input_filename. The
6175 INPUT_STAT_SET signals that the stat is needed. */
6179 /* On fatal signals, delete all the temporary files. */
6182 fatal_signal (int signum
)
6184 signal (signum
, SIG_DFL
);
6185 delete_failure_queue ();
6186 delete_temp_files ();
6187 /* Get the same signal again, this time not handled,
6188 so its normal effect occurs. */
6189 kill (getpid (), signum
);
6192 /* Compare the contents of the two files named CMPFILE[0] and
6193 CMPFILE[1]. Return zero if they're identical, nonzero
6197 compare_files (char *cmpfile
[])
6200 FILE *temp
[2] = { NULL
, NULL
};
6206 void *map
[2] = { NULL
, NULL
};
6208 for (i
= 0; i
< 2; i
++)
6212 if (stat (cmpfile
[i
], &st
) < 0 || !S_ISREG (st
.st_mode
))
6214 error ("%s: could not determine length of compare-debug file %s",
6215 gcc_input_filename
, cmpfile
[i
]);
6220 length
[i
] = st
.st_size
;
6223 if (!ret
&& length
[0] != length
[1])
6225 error ("%s: -fcompare-debug failure (length)", gcc_input_filename
);
6230 for (i
= 0; i
< 2; i
++)
6232 int fd
= open (cmpfile
[i
], O_RDONLY
);
6235 error ("%s: could not open compare-debug file %s",
6236 gcc_input_filename
, cmpfile
[i
]);
6241 map
[i
] = mmap (NULL
, length
[i
], PROT_READ
, MAP_PRIVATE
, fd
, 0);
6244 if (map
[i
] == (void *) MAP_FAILED
)
6253 if (memcmp (map
[0], map
[1], length
[0]) != 0)
6255 error ("%s: -fcompare-debug failure", gcc_input_filename
);
6260 for (i
= 0; i
< 2; i
++)
6262 munmap ((caddr_t
) map
[i
], length
[i
]);
6271 for (i
= 0; i
< 2; i
++)
6273 temp
[i
] = fopen (cmpfile
[i
], "r");
6276 error ("%s: could not open compare-debug file %s",
6277 gcc_input_filename
, cmpfile
[i
]);
6283 if (!ret
&& temp
[0] && temp
[1])
6287 c0
= fgetc (temp
[0]);
6288 c1
= fgetc (temp
[1]);
6292 error ("%s: -fcompare-debug failure",
6293 gcc_input_filename
);
6302 for (i
= 1; i
>= 0; i
--)
6311 extern int main (int, char **);
6314 main (int argc
, char **argv
)
6318 int linker_was_run
= 0;
6319 int lang_n_infiles
= 0;
6320 int num_linker_inputs
= 0;
6321 char *explicit_link_files
;
6323 char *lto_wrapper_file
;
6325 struct user_specs
*uptr
;
6326 char **old_argv
= argv
;
6327 struct cl_decoded_option
*decoded_options
;
6328 unsigned int decoded_options_count
;
6330 p
= argv
[0] + strlen (argv
[0]);
6331 while (p
!= argv
[0] && !IS_DIR_SEPARATOR (p
[-1]))
6335 xmalloc_set_program_name (progname
);
6337 expandargv (&argc
, &argv
);
6339 /* Determine if any expansions were made. */
6340 if (argv
!= old_argv
)
6341 at_file_supplied
= true;
6343 /* Register the language-independent parameters. */
6344 global_init_params ();
6347 init_options_struct (&global_options
, &global_options_set
);
6349 decode_cmdline_options_to_array (argc
, CONST_CAST2 (const char **, char **,
6352 &decoded_options
, &decoded_options_count
);
6354 /* Unlock the stdio streams. */
6355 unlock_std_streams ();
6357 gcc_init_libintl ();
6359 diagnostic_initialize (global_dc
, 0);
6361 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6362 /* Perform host dependent initialization when needed. */
6363 GCC_DRIVER_HOST_INITIALIZATION
;
6366 if (atexit (delete_temp_files
) != 0)
6367 fatal_error ("atexit failed");
6369 if (signal (SIGINT
, SIG_IGN
) != SIG_IGN
)
6370 signal (SIGINT
, fatal_signal
);
6372 if (signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
6373 signal (SIGHUP
, fatal_signal
);
6375 if (signal (SIGTERM
, SIG_IGN
) != SIG_IGN
)
6376 signal (SIGTERM
, fatal_signal
);
6378 if (signal (SIGPIPE
, SIG_IGN
) != SIG_IGN
)
6379 signal (SIGPIPE
, fatal_signal
);
6382 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6383 receive the signal. A different setting is inheritable */
6384 signal (SIGCHLD
, SIG_DFL
);
6387 /* Parsing and gimplification sometimes need quite large stack.
6388 Increase stack size limits if possible. */
6389 stack_limit_increase (64 * 1024 * 1024);
6391 /* Allocate the argument vector. */
6394 obstack_init (&obstack
);
6396 /* Build multilib_select, et. al from the separate lines that make up each
6397 multilib selection. */
6399 const char *const *q
= multilib_raw
;
6402 obstack_init (&multilib_obstack
);
6403 while ((p
= *q
++) != (char *) 0)
6404 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6406 obstack_1grow (&multilib_obstack
, 0);
6407 multilib_select
= XOBFINISH (&multilib_obstack
, const char *);
6409 q
= multilib_matches_raw
;
6410 while ((p
= *q
++) != (char *) 0)
6411 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6413 obstack_1grow (&multilib_obstack
, 0);
6414 multilib_matches
= XOBFINISH (&multilib_obstack
, const char *);
6416 q
= multilib_exclusions_raw
;
6417 while ((p
= *q
++) != (char *) 0)
6418 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6420 obstack_1grow (&multilib_obstack
, 0);
6421 multilib_exclusions
= XOBFINISH (&multilib_obstack
, const char *);
6423 q
= multilib_reuse_raw
;
6424 while ((p
= *q
++) != (char *) 0)
6425 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6427 obstack_1grow (&multilib_obstack
, 0);
6428 multilib_reuse
= XOBFINISH (&multilib_obstack
, const char *);
6431 for (i
= 0; i
< ARRAY_SIZE (multilib_defaults_raw
); i
++)
6434 obstack_1grow (&multilib_obstack
, ' ');
6435 obstack_grow (&multilib_obstack
,
6436 multilib_defaults_raw
[i
],
6437 strlen (multilib_defaults_raw
[i
]));
6441 obstack_1grow (&multilib_obstack
, 0);
6442 multilib_defaults
= XOBFINISH (&multilib_obstack
, const char *);
6445 #ifdef INIT_ENVIRONMENT
6446 /* Set up any other necessary machine specific environment variables. */
6447 xputenv (INIT_ENVIRONMENT
);
6450 /* Make a table of what switches there are (switches, n_switches).
6451 Make a table of specified input files (infiles, n_infiles).
6452 Decode switches that are handled locally. */
6454 process_command (decoded_options_count
, decoded_options
);
6456 /* Initialize the vector of specs to just the default.
6457 This means one element containing 0s, as a terminator. */
6459 compilers
= XNEWVAR (struct compiler
, sizeof default_compilers
);
6460 memcpy (compilers
, default_compilers
, sizeof default_compilers
);
6461 n_compilers
= n_default_compilers
;
6463 /* Read specs from a file if there is one. */
6465 machine_suffix
= concat (spec_host_machine
, dir_separator_str
, spec_version
,
6466 accel_dir_suffix
, dir_separator_str
, NULL
);
6467 just_machine_suffix
= concat (spec_machine
, dir_separator_str
, NULL
);
6469 specs_file
= find_a_file (&startfile_prefixes
, "specs", R_OK
, true);
6470 /* Read the specs file unless it is a default one. */
6471 if (specs_file
!= 0 && strcmp (specs_file
, "specs"))
6472 read_specs (specs_file
, true, false);
6476 #ifndef ACCEL_COMPILER
6477 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6478 for any override of as, ld and libraries. */
6479 specs_file
= (char *) alloca (strlen (standard_exec_prefix
)
6480 + strlen (just_machine_suffix
) + sizeof ("specs"));
6481 strcpy (specs_file
, standard_exec_prefix
);
6482 strcat (specs_file
, just_machine_suffix
);
6483 strcat (specs_file
, "specs");
6484 if (access (specs_file
, R_OK
) == 0)
6485 read_specs (specs_file
, true, false);
6488 /* Process any configure-time defaults specified for the command line
6489 options, via OPTION_DEFAULT_SPECS. */
6490 for (i
= 0; i
< ARRAY_SIZE (option_default_specs
); i
++)
6491 do_option_spec (option_default_specs
[i
].name
,
6492 option_default_specs
[i
].spec
);
6494 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6495 of the command line. */
6497 for (i
= 0; i
< ARRAY_SIZE (driver_self_specs
); i
++)
6498 do_self_spec (driver_self_specs
[i
]);
6500 /* If not cross-compiling, look for executables in the standard
6502 if (*cross_compile
== '0')
6504 if (*md_exec_prefix
)
6506 add_prefix (&exec_prefixes
, md_exec_prefix
, "GCC",
6507 PREFIX_PRIORITY_LAST
, 0, 0);
6511 /* Process sysroot_suffix_spec. */
6512 if (*sysroot_suffix_spec
!= 0
6513 && !no_sysroot_suffix
6514 && do_spec_2 (sysroot_suffix_spec
) == 0)
6516 if (argbuf
.length () > 1)
6517 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6518 else if (argbuf
.length () == 1)
6519 target_sysroot_suffix
= xstrdup (argbuf
.last ());
6522 #ifdef HAVE_LD_SYSROOT
6523 /* Pass the --sysroot option to the linker, if it supports that. If
6524 there is a sysroot_suffix_spec, it has already been processed by
6525 this point, so target_system_root really is the system root we
6527 if (target_system_root
)
6529 obstack_grow (&obstack
, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6530 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
6531 set_spec ("link", XOBFINISH (&obstack
, const char *), false);
6535 /* Process sysroot_hdrs_suffix_spec. */
6536 if (*sysroot_hdrs_suffix_spec
!= 0
6537 && !no_sysroot_suffix
6538 && do_spec_2 (sysroot_hdrs_suffix_spec
) == 0)
6540 if (argbuf
.length () > 1)
6541 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6542 else if (argbuf
.length () == 1)
6543 target_sysroot_hdrs_suffix
= xstrdup (argbuf
.last ());
6546 /* Look for startfiles in the standard places. */
6547 if (*startfile_prefix_spec
!= 0
6548 && do_spec_2 (startfile_prefix_spec
) == 0
6549 && do_spec_1 (" ", 0, NULL
) == 0)
6553 FOR_EACH_VEC_ELT (argbuf
, ndx
, arg
)
6554 add_sysrooted_prefix (&startfile_prefixes
, arg
, "BINUTILS",
6555 PREFIX_PRIORITY_LAST
, 0, 1);
6557 /* We should eventually get rid of all these and stick to
6558 startfile_prefix_spec exclusively. */
6559 else if (*cross_compile
== '0' || target_system_root
)
6561 if (*md_startfile_prefix
)
6562 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix
,
6563 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
6565 if (*md_startfile_prefix_1
)
6566 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix_1
,
6567 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
6569 /* If standard_startfile_prefix is relative, base it on
6570 standard_exec_prefix. This lets us move the installed tree
6571 as a unit. If GCC_EXEC_PREFIX is defined, base
6572 standard_startfile_prefix on that as well.
6574 If the prefix is relative, only search it for native compilers;
6575 otherwise we will search a directory containing host libraries. */
6576 if (IS_ABSOLUTE_PATH (standard_startfile_prefix
))
6577 add_sysrooted_prefix (&startfile_prefixes
,
6578 standard_startfile_prefix
, "BINUTILS",
6579 PREFIX_PRIORITY_LAST
, 0, 1);
6580 else if (*cross_compile
== '0')
6582 add_prefix (&startfile_prefixes
,
6583 concat (gcc_exec_prefix
6584 ? gcc_exec_prefix
: standard_exec_prefix
,
6586 standard_startfile_prefix
, NULL
),
6587 NULL
, PREFIX_PRIORITY_LAST
, 0, 1);
6590 /* Sysrooted prefixes are relocated because target_system_root is
6591 also relocated by gcc_exec_prefix. */
6592 if (*standard_startfile_prefix_1
)
6593 add_sysrooted_prefix (&startfile_prefixes
,
6594 standard_startfile_prefix_1
, "BINUTILS",
6595 PREFIX_PRIORITY_LAST
, 0, 1);
6596 if (*standard_startfile_prefix_2
)
6597 add_sysrooted_prefix (&startfile_prefixes
,
6598 standard_startfile_prefix_2
, "BINUTILS",
6599 PREFIX_PRIORITY_LAST
, 0, 1);
6602 /* Process any user specified specs in the order given on the command
6604 for (uptr
= user_specs_head
; uptr
; uptr
= uptr
->next
)
6606 char *filename
= find_a_file (&startfile_prefixes
, uptr
->filename
,
6608 read_specs (filename
? filename
: uptr
->filename
, false, true);
6611 /* Process any user self specs. */
6613 struct spec_list
*sl
;
6614 for (sl
= specs
; sl
; sl
= sl
->next
)
6615 if (sl
->name_len
== sizeof "self_spec" - 1
6616 && !strcmp (sl
->name
, "self_spec"))
6617 do_self_spec (*sl
->ptr_spec
);
6622 enum save_temps save
;
6624 if (!compare_debug_second
)
6626 n_switches_debug_check
[1] = n_switches
;
6627 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
6628 switches_debug_check
[1] = XDUPVEC (struct switchstr
, switches
,
6631 do_self_spec ("%:compare-debug-self-opt()");
6632 n_switches_debug_check
[0] = n_switches
;
6633 n_switches_alloc_debug_check
[0] = n_switches_alloc
;
6634 switches_debug_check
[0] = switches
;
6636 n_switches
= n_switches_debug_check
[1];
6637 n_switches_alloc
= n_switches_alloc_debug_check
[1];
6638 switches
= switches_debug_check
[1];
6641 /* Avoid crash when computing %j in this early. */
6642 save
= save_temps_flag
;
6643 save_temps_flag
= SAVE_TEMPS_NONE
;
6645 compare_debug
= -compare_debug
;
6646 do_self_spec ("%:compare-debug-self-opt()");
6648 save_temps_flag
= save
;
6650 if (!compare_debug_second
)
6652 n_switches_debug_check
[1] = n_switches
;
6653 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
6654 switches_debug_check
[1] = switches
;
6655 compare_debug
= -compare_debug
;
6656 n_switches
= n_switches_debug_check
[0];
6657 n_switches_alloc
= n_switches_debug_check
[0];
6658 switches
= switches_debug_check
[0];
6663 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6664 if (gcc_exec_prefix
)
6665 gcc_exec_prefix
= concat (gcc_exec_prefix
, spec_host_machine
,
6666 dir_separator_str
, spec_version
,
6667 accel_dir_suffix
, dir_separator_str
, NULL
);
6669 /* Now we have the specs.
6670 Set the `valid' bits for switches that match anything in any spec. */
6672 validate_all_switches ();
6674 /* Now that we have the switches and the specs, set
6675 the subdirectory based on the options. */
6676 set_multilib_dir ();
6678 /* Set up to remember the pathname of gcc and any options
6679 needed for collect. We use argv[0] instead of progname because
6680 we need the complete pathname. */
6681 obstack_init (&collect_obstack
);
6682 obstack_grow (&collect_obstack
, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6683 obstack_grow (&collect_obstack
, argv
[0], strlen (argv
[0]) + 1);
6684 xputenv (XOBFINISH (&collect_obstack
, char *));
6686 if (strlen (OFFLOAD_TARGETS
) > 0)
6688 obstack_init (&collect_obstack
);
6689 obstack_grow (&collect_obstack
, "OFFLOAD_TARGET_NAMES=",
6690 sizeof ("OFFLOAD_TARGET_NAMES=") - 1);
6691 obstack_grow (&collect_obstack
, OFFLOAD_TARGETS
,
6692 strlen (OFFLOAD_TARGETS
) + 1);
6693 xputenv (XOBFINISH (&collect_obstack
, char *));
6696 /* Set up to remember the pathname of the lto wrapper. */
6699 lto_wrapper_file
= NULL
;
6701 lto_wrapper_file
= find_a_file (&exec_prefixes
, "lto-wrapper",
6703 if (lto_wrapper_file
)
6705 lto_wrapper_file
= convert_white_space (lto_wrapper_file
);
6706 lto_wrapper_spec
= lto_wrapper_file
;
6707 obstack_init (&collect_obstack
);
6708 obstack_grow (&collect_obstack
, "COLLECT_LTO_WRAPPER=",
6709 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
6710 obstack_grow (&collect_obstack
, lto_wrapper_spec
,
6711 strlen (lto_wrapper_spec
) + 1);
6712 xputenv (XOBFINISH (&collect_obstack
, char *));
6715 /* Reject switches that no pass was interested in. */
6717 for (i
= 0; (int) i
< n_switches
; i
++)
6718 if (! switches
[i
].validated
)
6719 error ("unrecognized command line option %<-%s%>", switches
[i
].part1
);
6721 /* Obey some of the options. */
6723 if (print_search_dirs
)
6725 printf (_("install: %s%s\n"),
6726 gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
6727 gcc_exec_prefix
? "" : machine_suffix
);
6728 printf (_("programs: %s\n"),
6729 build_search_list (&exec_prefixes
, "", false, false));
6730 printf (_("libraries: %s\n"),
6731 build_search_list (&startfile_prefixes
, "", false, true));
6735 if (print_file_name
)
6737 printf ("%s\n", find_file (print_file_name
));
6741 if (print_prog_name
)
6743 if (use_ld
!= NULL
&& ! strcmp (print_prog_name
, "ld"))
6745 /* Append USE_LD to to the default linker. */
6746 #ifdef DEFAULT_LINKER
6748 # ifdef HAVE_HOST_EXECUTABLE_SUFFIX
6749 int len
= (sizeof (DEFAULT_LINKER
)
6750 - sizeof (HOST_EXECUTABLE_SUFFIX
));
6754 char *default_linker
= xstrdup (DEFAULT_LINKER
);
6755 /* Strip HOST_EXECUTABLE_SUFFIX if DEFAULT_LINKER contains
6756 HOST_EXECUTABLE_SUFFIX. */
6757 if (! strcmp (&default_linker
[len
], HOST_EXECUTABLE_SUFFIX
))
6759 default_linker
[len
] = '\0';
6760 ld
= concat (default_linker
, use_ld
,
6761 HOST_EXECUTABLE_SUFFIX
, NULL
);
6766 ld
= concat (DEFAULT_LINKER
, use_ld
, NULL
);
6767 if (access (ld
, X_OK
) == 0)
6769 printf ("%s\n", ld
);
6773 print_prog_name
= concat (print_prog_name
, use_ld
, NULL
);
6775 char *newname
= find_a_file (&exec_prefixes
, print_prog_name
, X_OK
, 0);
6776 printf ("%s\n", (newname
? newname
: print_prog_name
));
6780 if (print_multi_lib
)
6782 print_multilib_info ();
6786 if (print_multi_directory
)
6788 if (multilib_dir
== NULL
)
6791 printf ("%s\n", multilib_dir
);
6795 if (print_multiarch
)
6797 if (multiarch_dir
== NULL
)
6800 printf ("%s\n", multiarch_dir
);
6806 if (target_system_root
)
6808 if (target_sysroot_suffix
)
6809 printf ("%s%s\n", target_system_root
, target_sysroot_suffix
);
6811 printf ("%s\n", target_system_root
);
6816 if (print_multi_os_directory
)
6818 if (multilib_os_dir
== NULL
)
6821 printf ("%s\n", multilib_os_dir
);
6825 if (print_sysroot_headers_suffix
)
6827 if (*sysroot_hdrs_suffix_spec
)
6829 printf("%s\n", (target_sysroot_hdrs_suffix
6830 ? target_sysroot_hdrs_suffix
6835 /* The error status indicates that only one set of fixed
6836 headers should be built. */
6837 fatal_error ("not configured with sysroot headers suffix");
6840 if (print_help_list
)
6846 printf (_("\nFor bug reporting instructions, please see:\n"));
6847 printf ("%s.\n", bug_report_url
);
6852 /* We do not exit here. Instead we have created a fake input file
6853 called 'help-dummy' which needs to be compiled, and we pass this
6854 on the various sub-processes, along with the --help switch.
6855 Ensure their output appears after ours. */
6856 fputc ('\n', stdout
);
6862 printf (_("%s %s%s\n"), progname
, pkgversion_string
,
6864 printf ("Copyright %s 2014 Free Software Foundation, Inc.\n",
6866 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
6867 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
6872 /* We do not exit here. We use the same mechanism of --help to print
6873 the version of the sub-processes. */
6874 fputc ('\n', stdout
);
6883 fnotice (stderr
, "Target: %s\n", spec_machine
);
6884 fnotice (stderr
, "Configured with: %s\n", configuration_arguments
);
6886 #ifdef THREAD_MODEL_SPEC
6887 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6888 but there's no point in doing all this processing just to get
6889 thread_model back. */
6890 obstack_init (&obstack
);
6891 do_spec_1 (THREAD_MODEL_SPEC
, 0, thread_model
);
6892 obstack_1grow (&obstack
, '\0');
6893 thrmod
= XOBFINISH (&obstack
, const char *);
6895 thrmod
= thread_model
;
6898 fnotice (stderr
, "Thread model: %s\n", thrmod
);
6900 /* compiler_version is truncated at the first space when initialized
6901 from version string, so truncate version_string at the first space
6902 before comparing. */
6903 for (n
= 0; version_string
[n
]; n
++)
6904 if (version_string
[n
] == ' ')
6907 if (! strncmp (version_string
, compiler_version
, n
)
6908 && compiler_version
[n
] == 0)
6909 fnotice (stderr
, "gcc version %s %s\n", version_string
,
6912 fnotice (stderr
, "gcc driver version %s %sexecuting gcc version %s\n",
6913 version_string
, pkgversion_string
, compiler_version
);
6919 if (n_infiles
== added_libraries
)
6920 fatal_error ("no input files");
6925 /* Make a place to record the compiler output file names
6926 that correspond to the input files. */
6929 i
+= lang_specific_extra_outfiles
;
6930 outfiles
= XCNEWVEC (const char *, i
);
6932 /* Record which files were specified explicitly as link input. */
6934 explicit_link_files
= XCNEWVEC (char, n_infiles
);
6936 combine_inputs
= have_o
|| flag_wpa
;
6938 for (i
= 0; (int) i
< n_infiles
; i
++)
6940 const char *name
= infiles
[i
].name
;
6941 struct compiler
*compiler
= lookup_compiler (name
,
6943 infiles
[i
].language
);
6945 if (compiler
&& !(compiler
->combinable
))
6946 combine_inputs
= false;
6948 if (lang_n_infiles
> 0 && compiler
!= input_file_compiler
6949 && infiles
[i
].language
&& infiles
[i
].language
[0] != '*')
6950 infiles
[i
].incompiler
= compiler
;
6954 input_file_compiler
= compiler
;
6955 infiles
[i
].incompiler
= compiler
;
6959 /* Since there is no compiler for this input file, assume it is a
6961 explicit_link_files
[i
] = 1;
6962 infiles
[i
].incompiler
= NULL
;
6964 infiles
[i
].compiled
= false;
6965 infiles
[i
].preprocessed
= false;
6968 if (!combine_inputs
&& have_c
&& have_o
&& lang_n_infiles
> 1)
6969 fatal_error ("cannot specify -o with -c, -S or -E with multiple files");
6971 for (i
= 0; (int) i
< n_infiles
; i
++)
6973 int this_file_error
= 0;
6975 /* Tell do_spec what to substitute for %i. */
6977 input_file_number
= i
;
6978 set_input (infiles
[i
].name
);
6980 if (infiles
[i
].compiled
)
6983 /* Use the same thing in %o, unless cp->spec says otherwise. */
6985 outfiles
[i
] = gcc_input_filename
;
6987 /* Figure out which compiler from the file's suffix. */
6990 = lookup_compiler (infiles
[i
].name
, input_filename_length
,
6991 infiles
[i
].language
);
6993 if (input_file_compiler
)
6995 /* Ok, we found an applicable compiler. Run its spec. */
6997 if (input_file_compiler
->spec
[0] == '#')
6999 error ("%s: %s compiler not installed on this system",
7000 gcc_input_filename
, &input_file_compiler
->spec
[1]);
7001 this_file_error
= 1;
7007 free (debug_check_temp_file
[0]);
7008 debug_check_temp_file
[0] = NULL
;
7010 free (debug_check_temp_file
[1]);
7011 debug_check_temp_file
[1] = NULL
;
7014 value
= do_spec (input_file_compiler
->spec
);
7015 infiles
[i
].compiled
= true;
7017 this_file_error
= 1;
7018 else if (compare_debug
&& debug_check_temp_file
[0])
7021 inform (0, "recompiling with -fcompare-debug");
7023 compare_debug
= -compare_debug
;
7024 n_switches
= n_switches_debug_check
[1];
7025 n_switches_alloc
= n_switches_alloc_debug_check
[1];
7026 switches
= switches_debug_check
[1];
7028 value
= do_spec (input_file_compiler
->spec
);
7030 compare_debug
= -compare_debug
;
7031 n_switches
= n_switches_debug_check
[0];
7032 n_switches_alloc
= n_switches_alloc_debug_check
[0];
7033 switches
= switches_debug_check
[0];
7037 error ("during -fcompare-debug recompilation");
7038 this_file_error
= 1;
7041 gcc_assert (debug_check_temp_file
[1]
7042 && filename_cmp (debug_check_temp_file
[0],
7043 debug_check_temp_file
[1]));
7046 inform (0, "comparing final insns dumps");
7048 if (compare_files (debug_check_temp_file
))
7049 this_file_error
= 1;
7054 free (debug_check_temp_file
[0]);
7055 debug_check_temp_file
[0] = NULL
;
7057 free (debug_check_temp_file
[1]);
7058 debug_check_temp_file
[1] = NULL
;
7063 /* If this file's name does not contain a recognized suffix,
7064 record it as explicit linker input. */
7067 explicit_link_files
[i
] = 1;
7069 /* Clear the delete-on-failure queue, deleting the files in it
7070 if this compilation failed. */
7072 if (this_file_error
)
7074 delete_failure_queue ();
7077 /* If this compilation succeeded, don't delete those files later. */
7078 clear_failure_queue ();
7081 /* Reset the input file name to the first compile/object file name, for use
7082 with %b in LINK_SPEC. We use the first input file that we can find
7083 a compiler to compile it instead of using infiles.language since for
7084 languages other than C we use aliases that we then lookup later. */
7089 for (i
= 0; i
< n_infiles
; i
++)
7090 if (infiles
[i
].incompiler
7091 || (infiles
[i
].language
&& infiles
[i
].language
[0] != '*'))
7093 set_input (infiles
[i
].name
);
7100 /* Make sure INPUT_FILE_NUMBER points to first available open
7102 input_file_number
= n_infiles
;
7103 if (lang_specific_pre_link ())
7107 /* Determine if there are any linker input files. */
7108 num_linker_inputs
= 0;
7109 for (i
= 0; (int) i
< n_infiles
; i
++)
7110 if (explicit_link_files
[i
] || outfiles
[i
] != NULL
)
7111 num_linker_inputs
++;
7113 /* Run ld to link all the compiler output files. */
7115 if (num_linker_inputs
> 0 && !seen_error () && print_subprocess_help
< 2)
7117 int tmp
= execution_count
;
7121 #if HAVE_LTO_PLUGIN > 0
7122 #if HAVE_LTO_PLUGIN == 2
7123 const char *fno_use_linker_plugin
= "fno-use-linker-plugin";
7125 const char *fuse_linker_plugin
= "fuse-linker-plugin";
7129 /* We'll use ld if we can't find collect2. */
7130 if (! strcmp (linker_name_spec
, "collect2"))
7132 char *s
= find_a_file (&exec_prefixes
, "collect2", X_OK
, false);
7134 linker_name_spec
= "ld";
7137 #if HAVE_LTO_PLUGIN > 0
7138 #if HAVE_LTO_PLUGIN == 2
7139 if (!switch_matches (fno_use_linker_plugin
,
7140 fno_use_linker_plugin
7141 + strlen (fno_use_linker_plugin
), 0))
7143 if (switch_matches (fuse_linker_plugin
,
7145 + strlen (fuse_linker_plugin
), 0))
7148 char *temp_spec
= find_a_file (&exec_prefixes
,
7149 LTOPLUGINSONAME
, R_OK
,
7152 fatal_error ("-fuse-linker-plugin, but %s not found",
7154 linker_plugin_file_spec
= convert_white_space (temp_spec
);
7157 lto_gcc_spec
= argv
[0];
7160 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
7162 putenv_from_prefixes (&exec_prefixes
, "COMPILER_PATH", false);
7163 putenv_from_prefixes (&startfile_prefixes
, LIBRARY_PATH_ENV
, true);
7165 if (print_subprocess_help
== 1)
7167 printf (_("\nLinker options\n==============\n\n"));
7168 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
7169 " to the linker.\n\n"));
7172 value
= do_spec (link_command_spec
);
7175 linker_was_run
= (tmp
!= execution_count
);
7178 /* If options said don't run linker,
7179 complain about input files to be given to the linker. */
7181 if (! linker_was_run
&& !seen_error ())
7182 for (i
= 0; (int) i
< n_infiles
; i
++)
7183 if (explicit_link_files
[i
]
7184 && !(infiles
[i
].language
&& infiles
[i
].language
[0] == '*'))
7185 warning (0, "%s: linker input file unused because linking not done",
7188 /* Delete some or all of the temporary files we made. */
7191 delete_failure_queue ();
7192 delete_temp_files ();
7194 if (print_help_list
)
7196 printf (("\nFor bug reporting instructions, please see:\n"));
7197 printf ("%s\n", bug_report_url
);
7201 return (signal_count
!= 0 ? 2
7202 : seen_error () ? (pass_exit_codes
? greatest_status
: 1)
7206 /* Find the proper compilation spec for the file name NAME,
7207 whose length is LENGTH. LANGUAGE is the specified language,
7208 or 0 if this file is to be passed to the linker. */
7210 static struct compiler
*
7211 lookup_compiler (const char *name
, size_t length
, const char *language
)
7213 struct compiler
*cp
;
7215 /* If this was specified by the user to be a linker input, indicate that. */
7216 if (language
!= 0 && language
[0] == '*')
7219 /* Otherwise, look for the language, if one is spec'd. */
7222 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7223 if (cp
->suffix
[0] == '@' && !strcmp (cp
->suffix
+ 1, language
))
7226 error ("language %s not recognized", language
);
7230 /* Look for a suffix. */
7231 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7233 if (/* The suffix `-' matches only the file name `-'. */
7234 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
7235 || (strlen (cp
->suffix
) < length
7236 /* See if the suffix matches the end of NAME. */
7237 && !strcmp (cp
->suffix
,
7238 name
+ length
- strlen (cp
->suffix
))
7243 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
7244 /* Look again, but case-insensitively this time. */
7246 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7248 if (/* The suffix `-' matches only the file name `-'. */
7249 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
7250 || (strlen (cp
->suffix
) < length
7251 /* See if the suffix matches the end of NAME. */
7252 && ((!strcmp (cp
->suffix
,
7253 name
+ length
- strlen (cp
->suffix
))
7254 || !strpbrk (cp
->suffix
, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
7255 && !strcasecmp (cp
->suffix
,
7256 name
+ length
- strlen (cp
->suffix
)))
7262 if (cp
>= compilers
)
7264 if (cp
->spec
[0] != '@')
7265 /* A non-alias entry: return it. */
7268 /* An alias entry maps a suffix to a language.
7269 Search for the language; pass 0 for NAME and LENGTH
7270 to avoid infinite recursion if language not found. */
7271 return lookup_compiler (NULL
, 0, cp
->spec
+ 1);
7277 save_string (const char *s
, int len
)
7279 char *result
= XNEWVEC (char, len
+ 1);
7281 memcpy (result
, s
, len
);
7287 pfatal_with_name (const char *name
)
7289 perror_with_name (name
);
7290 delete_temp_files ();
7295 perror_with_name (const char *name
)
7297 error ("%s: %m", name
);
7301 validate_switches_from_spec (const char *spec
, bool user
)
7303 const char *p
= spec
;
7306 if (c
== '%' && (*p
== '{' || *p
== '<' || (*p
== 'W' && *++p
== '{')))
7307 /* We have a switch spec. */
7308 p
= validate_switches (p
+ 1, user
);
7312 validate_all_switches (void)
7314 struct compiler
*comp
;
7315 struct spec_list
*spec
;
7317 for (comp
= compilers
; comp
->spec
; comp
++)
7318 validate_switches_from_spec (comp
->spec
, false);
7320 /* Look through the linked list of specs read from the specs file. */
7321 for (spec
= specs
; spec
; spec
= spec
->next
)
7322 validate_switches_from_spec (*spec
->ptr_spec
, spec
->user_p
);
7324 validate_switches_from_spec (link_command_spec
, false);
7327 /* Look at the switch-name that comes after START
7328 and mark as valid all supplied switches that match it. */
7331 validate_switches (const char *start
, bool user_spec
)
7333 const char *p
= start
;
7337 bool suffix
= false;
7338 bool starred
= false;
7340 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7349 if (*p
== '.' || *p
== ',')
7353 while (ISIDNUM (*p
) || *p
== '-' || *p
== '+' || *p
== '='
7354 || *p
== ',' || *p
== '.' || *p
== '@')
7359 starred
= true, p
++;
7365 /* Mark all matching switches as valid. */
7366 for (i
= 0; i
< n_switches
; i
++)
7367 if (!strncmp (switches
[i
].part1
, atom
, len
)
7368 && (starred
|| switches
[i
].part1
[len
] == '\0')
7369 && (switches
[i
].known
|| user_spec
))
7370 switches
[i
].validated
= true;
7374 if (*p
&& (p
[-1] == '|' || p
[-1] == '&'))
7377 if (*p
&& p
[-1] == ':')
7379 while (*p
&& *p
!= ';' && *p
!= '}')
7384 if (*p
== '{' || *p
== '<')
7385 p
= validate_switches (p
+1, user_spec
);
7386 else if (p
[0] == 'W' && p
[1] == '{')
7387 p
= validate_switches (p
+2, user_spec
);
7394 if (*p
&& p
[-1] == ';')
7408 static struct mdswitchstr
*mdswitches
;
7409 static int n_mdswitches
;
7411 /* Check whether a particular argument was used. The first time we
7412 canonicalize the switches to keep only the ones we care about. */
7415 used_arg (const char *p
, int len
)
7420 const char *replace
;
7425 static struct mswitchstr
*mswitches
;
7426 static int n_mswitches
;
7431 struct mswitchstr
*matches
;
7435 /* Break multilib_matches into the component strings of string
7436 and replacement string. */
7437 for (q
= multilib_matches
; *q
!= '\0'; q
++)
7442 = (struct mswitchstr
*) alloca ((sizeof (struct mswitchstr
)) * cnt
);
7444 q
= multilib_matches
;
7453 fatal_error ("multilib spec %qs is invalid",
7458 matches
[i
].len
= q
- matches
[i
].str
;
7460 matches
[i
].replace
= ++q
;
7461 while (*q
!= ';' && *q
!= '\0')
7464 goto invalid_matches
;
7467 matches
[i
].rep_len
= q
- matches
[i
].replace
;
7473 /* Now build a list of the replacement string for switches that we care
7474 about. Make sure we allocate at least one entry. This prevents
7475 xmalloc from calling fatal, and prevents us from re-executing this
7478 = XNEWVEC (struct mswitchstr
, n_mdswitches
+ (n_switches
? n_switches
: 1));
7479 for (i
= 0; i
< n_switches
; i
++)
7480 if ((switches
[i
].live_cond
& SWITCH_IGNORE
) == 0)
7482 int xlen
= strlen (switches
[i
].part1
);
7483 for (j
= 0; j
< cnt
; j
++)
7484 if (xlen
== matches
[j
].len
7485 && ! strncmp (switches
[i
].part1
, matches
[j
].str
, xlen
))
7487 mswitches
[n_mswitches
].str
= matches
[j
].replace
;
7488 mswitches
[n_mswitches
].len
= matches
[j
].rep_len
;
7489 mswitches
[n_mswitches
].replace
= (char *) 0;
7490 mswitches
[n_mswitches
].rep_len
= 0;
7496 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7497 on the command line nor any options mutually incompatible with
7499 for (i
= 0; i
< n_mdswitches
; i
++)
7503 for (q
= multilib_options
; *q
!= '\0'; q
++)
7509 while (strncmp (q
, mdswitches
[i
].str
, mdswitches
[i
].len
) != 0
7510 || strchr (" /", q
[mdswitches
[i
].len
]) == NULL
)
7512 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
7519 if (*q
!= ' ' && *q
!= '\0')
7521 while (*r
!= ' ' && *r
!= '\0')
7524 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
7527 if (used_arg (r
, q
- r
))
7532 mswitches
[n_mswitches
].str
= mdswitches
[i
].str
;
7533 mswitches
[n_mswitches
].len
= mdswitches
[i
].len
;
7534 mswitches
[n_mswitches
].replace
= (char *) 0;
7535 mswitches
[n_mswitches
].rep_len
= 0;
7548 for (i
= 0; i
< n_mswitches
; i
++)
7549 if (len
== mswitches
[i
].len
&& ! strncmp (p
, mswitches
[i
].str
, len
))
7556 default_arg (const char *p
, int len
)
7560 for (i
= 0; i
< n_mdswitches
; i
++)
7561 if (len
== mdswitches
[i
].len
&& ! strncmp (p
, mdswitches
[i
].str
, len
))
7567 /* Work out the subdirectory to use based on the options. The format of
7568 multilib_select is a list of elements. Each element is a subdirectory
7569 name followed by a list of options followed by a semicolon. The format
7570 of multilib_exclusions is the same, but without the preceding
7571 directory. First gcc will check the exclusions, if none of the options
7572 beginning with an exclamation point are present, and all of the other
7573 options are present, then we will ignore this completely. Passing
7574 that, gcc will consider each multilib_select in turn using the same
7575 rules for matching the options. If a match is found, that subdirectory
7577 A subdirectory name is optionally followed by a colon and the corresponding
7581 set_multilib_dir (void)
7584 unsigned int this_path_len
;
7585 const char *this_path
, *this_arg
;
7586 const char *start
, *end
;
7588 int ok
, ndfltok
, first
;
7591 start
= multilib_defaults
;
7592 while (*start
== ' ' || *start
== '\t')
7594 while (*start
!= '\0')
7597 while (*start
!= ' ' && *start
!= '\t' && *start
!= '\0')
7599 while (*start
== ' ' || *start
== '\t')
7607 mdswitches
= XNEWVEC (struct mdswitchstr
, n_mdswitches
);
7608 for (start
= multilib_defaults
; *start
!= '\0'; start
= end
+ 1)
7610 while (*start
== ' ' || *start
== '\t')
7616 for (end
= start
+ 1;
7617 *end
!= ' ' && *end
!= '\t' && *end
!= '\0'; end
++)
7620 obstack_grow (&multilib_obstack
, start
, end
- start
);
7621 obstack_1grow (&multilib_obstack
, 0);
7622 mdswitches
[i
].str
= XOBFINISH (&multilib_obstack
, const char *);
7623 mdswitches
[i
++].len
= end
- start
;
7630 p
= multilib_exclusions
;
7633 /* Ignore newlines. */
7640 /* Check the arguments. */
7647 fatal_error ("multilib exclusions %qs is invalid",
7648 multilib_exclusions
);
7658 while (*p
!= ' ' && *p
!= ';')
7661 goto invalid_exclusions
;
7665 if (*this_arg
!= '!')
7673 ok
= used_arg (this_arg
, p
- this_arg
);
7688 p
= multilib_select
;
7690 /* Append multilib reuse rules if any. With those rules, we can reuse
7691 one multilib for certain different options sets. */
7692 if (strlen (multilib_reuse
) > 0)
7693 p
= concat (p
, multilib_reuse
, NULL
);
7697 /* Ignore newlines. */
7704 /* Get the initial path. */
7711 fatal_error ("multilib select %qs %qs is invalid",
7712 multilib_select
, multilib_reuse
);
7716 this_path_len
= p
- this_path
;
7718 /* Check the arguments. */
7725 goto invalid_select
;
7734 while (*p
!= ' ' && *p
!= ';')
7737 goto invalid_select
;
7741 if (*this_arg
!= '!')
7749 /* If this is a default argument, we can just ignore it.
7750 This is true even if this_arg begins with '!'. Beginning
7751 with '!' does not mean that this argument is necessarily
7752 inappropriate for this library: it merely means that
7753 there is a more specific library which uses this
7754 argument. If this argument is a default, we need not
7755 consider that more specific library. */
7756 ok
= used_arg (this_arg
, p
- this_arg
);
7763 if (default_arg (this_arg
, p
- this_arg
))
7772 if (this_path_len
!= 1
7773 || this_path
[0] != '.')
7775 char *new_multilib_dir
= XNEWVEC (char, this_path_len
+ 1);
7778 strncpy (new_multilib_dir
, this_path
, this_path_len
);
7779 new_multilib_dir
[this_path_len
] = '\0';
7780 q
= strchr (new_multilib_dir
, ':');
7783 multilib_dir
= new_multilib_dir
;
7790 const char *q
= this_path
, *end
= this_path
+ this_path_len
;
7792 while (q
< end
&& *q
!= ':')
7796 const char *q2
= q
+ 1, *ml_end
= end
;
7797 char *new_multilib_os_dir
;
7799 while (q2
< end
&& *q2
!= ':')
7803 new_multilib_os_dir
= XNEWVEC (char, ml_end
- q
);
7804 memcpy (new_multilib_os_dir
, q
+ 1, ml_end
- q
- 1);
7805 new_multilib_os_dir
[ml_end
- q
- 1] = '\0';
7806 multilib_os_dir
= *new_multilib_os_dir
? new_multilib_os_dir
: ".";
7808 if (q2
< end
&& *q2
== ':')
7810 char *new_multiarch_dir
= XNEWVEC (char, end
- q2
);
7811 memcpy (new_multiarch_dir
, q2
+ 1, end
- q2
- 1);
7812 new_multiarch_dir
[end
- q2
- 1] = '\0';
7813 multiarch_dir
= new_multiarch_dir
;
7822 if (multilib_dir
== NULL
&& multilib_os_dir
!= NULL
7823 && strcmp (multilib_os_dir
, ".") == 0)
7825 free (CONST_CAST (char *, multilib_os_dir
));
7826 multilib_os_dir
= NULL
;
7828 else if (multilib_dir
!= NULL
&& multilib_os_dir
== NULL
)
7829 multilib_os_dir
= multilib_dir
;
7832 /* Print out the multiple library subdirectory selection
7833 information. This prints out a series of lines. Each line looks
7834 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7835 required. Only the desired options are printed out, the negative
7836 matches. The options are print without a leading dash. There are
7837 no spaces to make it easy to use the information in the shell.
7838 Each subdirectory is printed only once. This assumes the ordering
7839 generated by the genmultilib script. Also, we leave out ones that match
7843 print_multilib_info (void)
7845 const char *p
= multilib_select
;
7846 const char *last_path
= 0, *this_path
;
7848 unsigned int last_path_len
= 0;
7853 /* Ignore newlines. */
7860 /* Get the initial path. */
7867 fatal_error ("multilib select %qs is invalid", multilib_select
);
7873 /* When --disable-multilib was used but target defines
7874 MULTILIB_OSDIRNAMES, entries starting with .: (and not starting
7875 with .:: for multiarch configurations) are there just to find
7876 multilib_os_dir, so skip them from output. */
7877 if (this_path
[0] == '.' && this_path
[1] == ':' && this_path
[2] != ':')
7880 /* Check for matches with the multilib_exclusions. We don't bother
7881 with the '!' in either list. If any of the exclusion rules match
7882 all of its options with the select rule, we skip it. */
7884 const char *e
= multilib_exclusions
;
7885 const char *this_arg
;
7890 /* Ignore newlines. */
7897 /* Check the arguments. */
7906 fatal_error ("multilib exclusion %qs is invalid",
7907 multilib_exclusions
);
7918 while (*e
!= ' ' && *e
!= ';')
7921 goto invalid_exclusion
;
7929 int len
= e
- this_arg
;
7932 goto invalid_select
;
7936 while (*q
!= ' ' && *q
!= ';')
7939 goto invalid_select
;
7943 if (! strncmp (arg
, this_arg
,
7944 (len
< q
- arg
) ? q
- arg
: len
)
7945 || default_arg (this_arg
, e
- this_arg
))
7975 /* If this is a duplicate, skip it. */
7976 skip
= (last_path
!= 0
7977 && (unsigned int) (p
- this_path
) == last_path_len
7978 && ! filename_ncmp (last_path
, this_path
, last_path_len
));
7980 last_path
= this_path
;
7981 last_path_len
= p
- this_path
;
7984 /* If this directory requires any default arguments, we can skip
7985 it. We will already have printed a directory identical to
7986 this one which does not require that default argument. */
7997 goto invalid_select
;
8004 while (*q
!= ' ' && *q
!= ';')
8007 goto invalid_select
;
8012 && default_arg (arg
, q
- arg
))
8027 for (p1
= last_path
; p1
< p
&& *p1
!= ':'; p1
++)
8038 goto invalid_select
;
8046 use_arg
= *p
!= '!';
8051 while (*p
!= ' ' && *p
!= ';')
8054 goto invalid_select
;
8066 /* If there are extra options, print them now. */
8067 if (multilib_extra
&& *multilib_extra
)
8069 int print_at
= TRUE
;
8072 for (q
= multilib_extra
; *q
!= '\0'; q
++)
8093 /* getenv built-in spec function.
8095 Returns the value of the environment variable given by its first
8096 argument, concatenated with the second argument. If the
8097 environment variable is not defined, a fatal error is issued. */
8100 getenv_spec_function (int argc
, const char **argv
)
8110 value
= getenv (argv
[0]);
8112 fatal_error ("environment variable %qs not defined", argv
[0]);
8114 /* We have to escape every character of the environment variable so
8115 they are not interpreted as active spec characters. A
8116 particularly painful case is when we are reading a variable
8117 holding a windows path complete with \ separators. */
8118 len
= strlen (value
) * 2 + strlen (argv
[1]) + 1;
8119 result
= XNEWVAR (char, len
);
8120 for (ptr
= result
; *value
; ptr
+= 2)
8126 strcpy (ptr
, argv
[1]);
8131 /* if-exists built-in spec function.
8133 Checks to see if the file specified by the absolute pathname in
8134 ARGS exists. Returns that pathname if found.
8136 The usual use for this function is to check for a library file
8137 (whose name has been expanded with %s). */
8140 if_exists_spec_function (int argc
, const char **argv
)
8142 /* Must have only one argument. */
8143 if (argc
== 1 && IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
8149 /* if-exists-else built-in spec function.
8151 This is like if-exists, but takes an additional argument which
8152 is returned if the first argument does not exist. */
8155 if_exists_else_spec_function (int argc
, const char **argv
)
8157 /* Must have exactly two arguments. */
8161 if (IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
8167 /* sanitize built-in spec function.
8169 This returns non-NULL, if sanitizing address, thread or
8170 any of the undefined behavior sanitizers. */
8173 sanitize_spec_function (int argc
, const char **argv
)
8178 if (strcmp (argv
[0], "address") == 0)
8179 return (flag_sanitize
& SANITIZE_ADDRESS
) ? "" : NULL
;
8180 if (strcmp (argv
[0], "thread") == 0)
8181 return (flag_sanitize
& SANITIZE_THREAD
) ? "" : NULL
;
8182 if (strcmp (argv
[0], "undefined") == 0)
8183 return (flag_sanitize
& SANITIZE_UNDEFINED
) ? "" : NULL
;
8184 if (strcmp (argv
[0], "leak") == 0)
8185 return ((flag_sanitize
8186 & (SANITIZE_ADDRESS
| SANITIZE_LEAK
| SANITIZE_THREAD
))
8187 == SANITIZE_LEAK
) ? "" : NULL
;
8191 /* replace-outfile built-in spec function.
8193 This looks for the first argument in the outfiles array's name and
8194 replaces it with the second argument. */
8197 replace_outfile_spec_function (int argc
, const char **argv
)
8200 /* Must have exactly two arguments. */
8204 for (i
= 0; i
< n_infiles
; i
++)
8206 if (outfiles
[i
] && !filename_cmp (outfiles
[i
], argv
[0]))
8207 outfiles
[i
] = xstrdup (argv
[1]);
8212 /* remove-outfile built-in spec function.
8214 * This looks for the first argument in the outfiles array's name and
8218 remove_outfile_spec_function (int argc
, const char **argv
)
8221 /* Must have exactly one argument. */
8225 for (i
= 0; i
< n_infiles
; i
++)
8227 if (outfiles
[i
] && !filename_cmp (outfiles
[i
], argv
[0]))
8233 /* Given two version numbers, compares the two numbers.
8234 A version number must match the regular expression
8235 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
8238 compare_version_strings (const char *v1
, const char *v2
)
8243 if (regcomp (&r
, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
8244 REG_EXTENDED
| REG_NOSUB
) != 0)
8246 rresult
= regexec (&r
, v1
, 0, NULL
, 0);
8247 if (rresult
== REG_NOMATCH
)
8248 fatal_error ("invalid version number %qs", v1
);
8249 else if (rresult
!= 0)
8251 rresult
= regexec (&r
, v2
, 0, NULL
, 0);
8252 if (rresult
== REG_NOMATCH
)
8253 fatal_error ("invalid version number %qs", v2
);
8254 else if (rresult
!= 0)
8257 return strverscmp (v1
, v2
);
8261 /* version_compare built-in spec function.
8263 This takes an argument of the following form:
8265 <comparison-op> <arg1> [<arg2>] <switch> <result>
8267 and produces "result" if the comparison evaluates to true,
8268 and nothing if it doesn't.
8270 The supported <comparison-op> values are:
8272 >= true if switch is a later (or same) version than arg1
8274 < true if switch is an earlier version than arg1
8276 >< true if switch is arg1 or later, and earlier than arg2
8277 <> true if switch is earlier than arg1 or is arg2 or later
8279 If the switch is not present, the condition is false unless
8280 the first character of the <comparison-op> is '!'.
8283 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
8284 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
8287 version_compare_spec_function (int argc
, const char **argv
)
8291 const char *switch_value
= NULL
;
8296 fatal_error ("too few arguments to %%:version-compare");
8297 if (argv
[0][0] == '\0')
8299 if ((argv
[0][1] == '<' || argv
[0][1] == '>') && argv
[0][0] != '!')
8301 if (argc
!= nargs
+ 3)
8302 fatal_error ("too many arguments to %%:version-compare");
8304 switch_len
= strlen (argv
[nargs
+ 1]);
8305 for (i
= 0; i
< n_switches
; i
++)
8306 if (!strncmp (switches
[i
].part1
, argv
[nargs
+ 1], switch_len
)
8307 && check_live_switch (i
, switch_len
))
8308 switch_value
= switches
[i
].part1
+ switch_len
;
8310 if (switch_value
== NULL
)
8314 comp1
= compare_version_strings (switch_value
, argv
[1]);
8316 comp2
= compare_version_strings (switch_value
, argv
[2]);
8318 comp2
= -1; /* This value unused. */
8321 switch (argv
[0][0] << 8 | argv
[0][1])
8323 case '>' << 8 | '=':
8324 result
= comp1
>= 0;
8326 case '!' << 8 | '<':
8327 result
= comp1
>= 0 || switch_value
== NULL
;
8332 case '!' << 8 | '>':
8333 result
= comp1
< 0 || switch_value
== NULL
;
8335 case '>' << 8 | '<':
8336 result
= comp1
>= 0 && comp2
< 0;
8338 case '<' << 8 | '>':
8339 result
= comp1
< 0 || comp2
>= 0;
8343 fatal_error ("unknown operator %qs in %%:version-compare", argv
[0]);
8348 return argv
[nargs
+ 2];
8351 /* %:include builtin spec function. This differs from %include in that it
8352 can be nested inside a spec, and thus be conditionalized. It takes
8353 one argument, the filename, and looks for it in the startfile path.
8354 The result is always NULL, i.e. an empty expansion. */
8357 include_spec_function (int argc
, const char **argv
)
8364 file
= find_a_file (&startfile_prefixes
, argv
[0], R_OK
, true);
8365 read_specs (file
? file
: argv
[0], false, false);
8370 /* %:find-file spec function. This function replaces its argument by
8371 the file found through find_file, that is the -print-file-name gcc
8374 find_file_spec_function (int argc
, const char **argv
)
8381 file
= find_file (argv
[0]);
8386 /* %:find-plugindir spec function. This function replaces its argument
8387 by the -iplugindir=<dir> option. `dir' is found through find_file, that
8388 is the -print-file-name gcc program option. */
8390 find_plugindir_spec_function (int argc
, const char **argv ATTRIBUTE_UNUSED
)
8397 option
= concat ("-iplugindir=", find_file ("plugin"), NULL
);
8402 /* %:print-asm-header spec function. Print a banner to say that the
8403 following output is from the assembler. */
8406 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED
,
8407 const char **argv ATTRIBUTE_UNUSED
)
8409 printf (_("Assembler options\n=================\n\n"));
8410 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
8415 /* Get a random number for -frandom-seed */
8417 static unsigned HOST_WIDE_INT
8418 get_random_number (void)
8420 unsigned HOST_WIDE_INT ret
= 0;
8423 fd
= open ("/dev/urandom", O_RDONLY
);
8426 read (fd
, &ret
, sizeof (HOST_WIDE_INT
));
8432 /* Get some more or less random data. */
8433 #ifdef HAVE_GETTIMEOFDAY
8437 gettimeofday (&tv
, NULL
);
8438 ret
= tv
.tv_sec
* 1000 + tv
.tv_usec
/ 1000;
8442 time_t now
= time (NULL
);
8444 if (now
!= (time_t)-1)
8445 ret
= (unsigned) now
;
8449 return ret
^ getpid ();
8452 /* %:compare-debug-dump-opt spec function. Save the last argument,
8453 expected to be the last -fdump-final-insns option, or generate a
8457 compare_debug_dump_opt_spec_function (int arg
,
8458 const char **argv ATTRIBUTE_UNUSED
)
8463 static char random_seed
[HOST_BITS_PER_WIDE_INT
/ 4 + 3];
8466 fatal_error ("too many arguments to %%:compare-debug-dump-opt");
8468 do_spec_2 ("%{fdump-final-insns=*:%*}");
8469 do_spec_1 (" ", 0, NULL
);
8471 if (argbuf
.length () > 0
8472 && strcmp (argv
[argbuf
.length () - 1], "."))
8477 name
= xstrdup (argv
[argbuf
.length () - 1]);
8482 const char *ext
= NULL
;
8484 if (argbuf
.length () > 0)
8486 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
8489 else if (!compare_debug
)
8492 do_spec_2 ("%g.gkd");
8494 do_spec_1 (" ", 0, NULL
);
8496 gcc_assert (argbuf
.length () > 0);
8498 name
= concat (argbuf
.last (), ext
, NULL
);
8500 ret
= concat ("-fdump-final-insns=", name
, NULL
);
8503 which
= compare_debug
< 0;
8504 debug_check_temp_file
[which
] = name
;
8508 unsigned HOST_WIDE_INT value
= get_random_number ();
8510 sprintf (random_seed
, HOST_WIDE_INT_PRINT_HEX
, value
);
8516 ret
= concat ("%{!frandom-seed=*:-frandom-seed=", random_seed
, "} ",
8527 static const char *debug_auxbase_opt
;
8529 /* %:compare-debug-self-opt spec function. Expands to the options
8530 that are to be passed in the second compilation of
8534 compare_debug_self_opt_spec_function (int arg
,
8535 const char **argv ATTRIBUTE_UNUSED
)
8538 fatal_error ("too many arguments to %%:compare-debug-self-opt");
8540 if (compare_debug
>= 0)
8543 do_spec_2 ("%{c|S:%{o*:%*}}");
8544 do_spec_1 (" ", 0, NULL
);
8546 if (argbuf
.length () > 0)
8547 debug_auxbase_opt
= concat ("-auxbase-strip ",
8551 debug_auxbase_opt
= NULL
;
8554 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
8555 %<fdump-final-insns=* -w -S -o %j \
8556 %{!fcompare-debug-second:-fcompare-debug-second} \
8557 ", compare_debug_opt
, NULL
);
8560 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
8561 options that are to be passed in the second compilation of
8562 compare-debug. It expects, as an argument, the basename of the
8563 current input file name, with the .gk suffix appended to it. */
8566 compare_debug_auxbase_opt_spec_function (int arg
,
8573 fatal_error ("too few arguments to %%:compare-debug-auxbase-opt");
8576 fatal_error ("too many arguments to %%:compare-debug-auxbase-opt");
8578 if (compare_debug
>= 0)
8581 len
= strlen (argv
[0]);
8582 if (len
< 3 || strcmp (argv
[0] + len
- 3, ".gk") != 0)
8583 fatal_error ("argument to %%:compare-debug-auxbase-opt "
8584 "does not end in .gk");
8586 if (debug_auxbase_opt
)
8587 return debug_auxbase_opt
;
8589 #define OPT "-auxbase "
8592 name
= (char*) xmalloc (sizeof (OPT
) + len
);
8593 memcpy (name
, OPT
, sizeof (OPT
) - 1);
8594 memcpy (name
+ sizeof (OPT
) - 1, argv
[0], len
);
8595 name
[sizeof (OPT
) - 1 + len
] = '\0';
8602 /* %:pass-through-libs spec function. Finds all -l options and input
8603 file names in the lib spec passed to it, and makes a list of them
8604 prepended with the plugin option to cause them to be passed through
8605 to the final link after all the new object files have been added. */
8608 pass_through_libs_spec_func (int argc
, const char **argv
)
8610 char *prepended
= xstrdup (" ");
8612 /* Shlemiel the painter's algorithm. Innately horrible, but at least
8613 we know that there will never be more than a handful of strings to
8614 concat, and it's only once per run, so it's not worth optimising. */
8615 for (n
= 0; n
< argc
; n
++)
8617 char *old
= prepended
;
8618 /* Anything that isn't an option is a full path to an output
8619 file; pass it through if it ends in '.a'. Among options,
8621 if (argv
[n
][0] == '-' && argv
[n
][1] == 'l')
8623 const char *lopt
= argv
[n
] + 2;
8624 /* Handle both joined and non-joined -l options. If for any
8625 reason there's a trailing -l with no joined or following
8626 arg just discard it. */
8627 if (!*lopt
&& ++n
>= argc
)
8631 prepended
= concat (prepended
, "-plugin-opt=-pass-through=-l",
8634 else if (!strcmp (".a", argv
[n
] + strlen (argv
[n
]) - 2))
8636 prepended
= concat (prepended
, "-plugin-opt=-pass-through=",
8637 argv
[n
], " ", NULL
);
8639 if (prepended
!= old
)
8645 /* %:replace-extension spec function. Replaces the extension of the
8646 first argument with the second argument. */
8649 replace_extension_spec_func (int argc
, const char **argv
)
8657 fatal_error ("too few arguments to %%:replace-extension");
8659 name
= xstrdup (argv
[0]);
8661 for (i
= strlen (name
) - 1; i
>= 0; i
--)
8662 if (IS_DIR_SEPARATOR (name
[i
]))
8665 p
= strrchr (name
+ i
+ 1, '.');
8669 result
= concat (name
, argv
[1], NULL
);
8675 /* Insert backslash before spaces in ORIG (usually a file path), to
8676 avoid being broken by spec parser.
8678 This function is needed as do_spec_1 treats white space (' ' and '\t')
8679 as the end of an argument. But in case of -plugin /usr/gcc install/xxx.so,
8680 the file name should be treated as a single argument rather than being
8681 broken into multiple. Solution is to insert '\\' before the space in a
8684 This function converts and only converts all occurrence of ' '
8685 to '\\' + ' ' and '\t' to '\\' + '\t'. For example:
8689 "a\\ b" -> "a\\\\ b"
8691 orig: input null-terminating string that was allocated by xalloc. The
8692 memory it points to might be freed in this function. Behavior undefined
8693 if ORIG wasn't xalloced or was freed already at entry.
8695 Return: ORIG if no conversion needed. Otherwise a newly allocated string
8696 that was converted from ORIG. */
8699 convert_white_space (char *orig
)
8701 int len
, number_of_space
= 0;
8703 for (len
= 0; orig
[len
]; len
++)
8704 if (orig
[len
] == ' ' || orig
[len
] == '\t') number_of_space
++;
8706 if (number_of_space
)
8708 char *new_spec
= (char *) xmalloc (len
+ number_of_space
+ 1);
8710 for (j
= 0, k
= 0; j
<= len
; j
++, k
++)
8712 if (orig
[j
] == ' ' || orig
[j
] == '\t')
8713 new_spec
[k
++] = '\\';
8714 new_spec
[k
] = orig
[j
];