1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987-2014 Free Software Foundation, Inc.
4 This file is part of GCC.
6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 3, or (at your option) any later
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING3. If not see
18 <http://www.gnu.org/licenses/>. */
20 /* This program is the user interface to the C compiler and possibly to
21 other compilers. It is used because compilation is a complicated procedure
22 which involves running several programs and passing temporary files between
23 them, forwarding the users switches to those programs selectively,
24 and deleting the temporary files at the end.
26 CC recognizes how to compile each input file by suffixes in the file names.
27 Once it knows which kind of compilation to perform, the procedure for
28 compilation is specified by a string called a "spec". */
32 #include "coretypes.h"
33 #include "multilib.h" /* before tm.h */
40 #include "diagnostic.h"
45 #include "filenames.h"
47 /* By default there is no special suffix for target executables. */
48 /* FIXME: when autoconf is fixed, remove the host check - dj */
49 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
50 #define HAVE_TARGET_EXECUTABLE_SUFFIX
53 /* By default there is no special suffix for host executables. */
54 #ifdef HOST_EXECUTABLE_SUFFIX
55 #define HAVE_HOST_EXECUTABLE_SUFFIX
57 #define HOST_EXECUTABLE_SUFFIX ""
60 /* By default, the suffix for target object files is ".o". */
61 #ifdef TARGET_OBJECT_SUFFIX
62 #define HAVE_TARGET_OBJECT_SUFFIX
64 #define TARGET_OBJECT_SUFFIX ".o"
67 static const char dir_separator_str
[] = { DIR_SEPARATOR
, 0 };
69 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
70 #ifndef LIBRARY_PATH_ENV
71 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
74 /* If a stage of compilation returns an exit status >= 1,
75 compilation of that file ceases. */
77 #define MIN_FATAL_STATUS 1
79 /* Flag set by cppspec.c to 1. */
82 /* Flag set to nonzero if an @file argument has been supplied to gcc. */
83 static bool at_file_supplied
;
85 /* Definition of string containing the arguments given to configure. */
86 #include "configargs.h"
88 /* Flag saying to print the command line options understood by gcc and its
91 static int print_help_list
;
93 /* Flag saying to print the version of gcc and its sub-processes. */
95 static int print_version
;
97 /* Flag indicating whether we should ONLY print the command and
98 arguments (like verbose_flag) without executing the command.
99 Displayed arguments are quoted so that the generated command
100 line is suitable for execution. This is intended for use in
101 shell scripts to capture the driver-generated command line. */
102 static int verbose_only_flag
;
104 /* Flag indicating how to print command line options of sub-processes. */
106 static int print_subprocess_help
;
108 /* Linker suffix passed to -fuse-ld=... */
109 static const char *use_ld
;
111 /* Whether we should report subprocess execution times to a file. */
113 FILE *report_times_to_file
= NULL
;
115 /* Nonzero means place this string before uses of /, so that include
116 and library files can be found in an alternate location. */
118 #ifdef TARGET_SYSTEM_ROOT
119 static const char *target_system_root
= TARGET_SYSTEM_ROOT
;
121 static const char *target_system_root
= 0;
124 /* Nonzero means pass the updated target_system_root to the compiler. */
126 static int target_system_root_changed
;
128 /* Nonzero means append this string to target_system_root. */
130 static const char *target_sysroot_suffix
= 0;
132 /* Nonzero means append this string to target_system_root for headers. */
134 static const char *target_sysroot_hdrs_suffix
= 0;
136 /* Nonzero means write "temp" files in source directory
137 and use the source file's name in them, and don't delete them. */
139 static enum save_temps
{
140 SAVE_TEMPS_NONE
, /* no -save-temps */
141 SAVE_TEMPS_CWD
, /* -save-temps in current directory */
142 SAVE_TEMPS_OBJ
/* -save-temps in object directory */
145 /* Output file to use to get the object directory for -save-temps=obj */
146 static char *save_temps_prefix
= 0;
147 static size_t save_temps_length
= 0;
149 /* The compiler version. */
151 static const char *compiler_version
;
153 /* The target version. */
155 static const char *const spec_version
= DEFAULT_TARGET_VERSION
;
157 /* The target machine. */
159 static const char *spec_machine
= DEFAULT_TARGET_MACHINE
;
161 /* Nonzero if cross-compiling.
162 When -b is used, the value comes from the `specs' file. */
164 #ifdef CROSS_DIRECTORY_STRUCTURE
165 static const char *cross_compile
= "1";
167 static const char *cross_compile
= "0";
170 /* Greatest exit code of sub-processes that has been encountered up to
172 static int greatest_status
= 1;
174 /* This is the obstack which we use to allocate many strings. */
176 static struct obstack obstack
;
178 /* This is the obstack to build an environment variable to pass to
179 collect2 that describes all of the relevant switches of what to
180 pass the compiler in building the list of pointers to constructors
183 static struct obstack collect_obstack
;
185 /* Forward declaration for prototypes. */
189 static void init_spec (void);
190 static void store_arg (const char *, int, int);
191 static void insert_wrapper (const char *);
192 static char *load_specs (const char *);
193 static void read_specs (const char *, bool, bool);
194 static void set_spec (const char *, const char *, bool);
195 static struct compiler
*lookup_compiler (const char *, size_t, const char *);
196 static char *build_search_list (const struct path_prefix
*, const char *,
198 static void xputenv (const char *);
199 static void putenv_from_prefixes (const struct path_prefix
*, const char *,
201 static int access_check (const char *, int);
202 static char *find_a_file (const struct path_prefix
*, const char *, int, bool);
203 static void add_prefix (struct path_prefix
*, const char *, const char *,
205 static void add_sysrooted_prefix (struct path_prefix
*, const char *,
206 const char *, int, int, int);
207 static char *skip_whitespace (char *);
208 static void delete_if_ordinary (const char *);
209 static void delete_temp_files (void);
210 static void delete_failure_queue (void);
211 static void clear_failure_queue (void);
212 static int check_live_switch (int, int);
213 static const char *handle_braces (const char *);
214 static inline bool input_suffix_matches (const char *, const char *);
215 static inline bool switch_matches (const char *, const char *, int);
216 static inline void mark_matching_switches (const char *, const char *, int);
217 static inline void process_marked_switches (void);
218 static const char *process_brace_body (const char *, const char *, const char *, int, int);
219 static const struct spec_function
*lookup_spec_function (const char *);
220 static const char *eval_spec_function (const char *, const char *);
221 static const char *handle_spec_function (const char *, bool *);
222 static char *save_string (const char *, int);
223 static void set_collect_gcc_options (void);
224 static int do_spec_1 (const char *, int, const char *);
225 static int do_spec_2 (const char *);
226 static void do_option_spec (const char *, const char *);
227 static void do_self_spec (const char *);
228 static const char *find_file (const char *);
229 static int is_directory (const char *, bool);
230 static const char *validate_switches (const char *, bool);
231 static void validate_all_switches (void);
232 static inline void validate_switches_from_spec (const char *, bool);
233 static void give_switch (int, int);
234 static int used_arg (const char *, int);
235 static int default_arg (const char *, int);
236 static void set_multilib_dir (void);
237 static void print_multilib_info (void);
238 static void perror_with_name (const char *);
239 static void display_help (void);
240 static void add_preprocessor_option (const char *, int);
241 static void add_assembler_option (const char *, int);
242 static void add_linker_option (const char *, int);
243 static void process_command (unsigned int, struct cl_decoded_option
*);
244 static int execute (void);
245 static void alloc_args (void);
246 static void clear_args (void);
247 static void fatal_signal (int);
248 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
249 static void init_gcc_specs (struct obstack
*, const char *, const char *,
252 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
253 static const char *convert_filename (const char *, int, int);
256 static const char *getenv_spec_function (int, const char **);
257 static const char *if_exists_spec_function (int, const char **);
258 static const char *if_exists_else_spec_function (int, const char **);
259 static const char *sanitize_spec_function (int, const char **);
260 static const char *replace_outfile_spec_function (int, const char **);
261 static const char *remove_outfile_spec_function (int, const char **);
262 static const char *version_compare_spec_function (int, const char **);
263 static const char *include_spec_function (int, const char **);
264 static const char *find_file_spec_function (int, const char **);
265 static const char *find_plugindir_spec_function (int, const char **);
266 static const char *print_asm_header_spec_function (int, const char **);
267 static const char *compare_debug_dump_opt_spec_function (int, const char **);
268 static const char *compare_debug_self_opt_spec_function (int, const char **);
269 static const char *compare_debug_auxbase_opt_spec_function (int, const char **);
270 static const char *pass_through_libs_spec_func (int, const char **);
271 static const char *replace_extension_spec_func (int, const char **);
272 static char *convert_white_space (char *);
274 /* The Specs Language
276 Specs are strings containing lines, each of which (if not blank)
277 is made up of a program name, and arguments separated by spaces.
278 The program name must be exact and start from root, since no path
279 is searched and it is unreliable to depend on the current working directory.
280 Redirection of input or output is not supported; the subprograms must
281 accept filenames saying what files to read and write.
283 In addition, the specs can contain %-sequences to substitute variable text
284 or for conditional text. Here is a table of all defined %-sequences.
285 Note that spaces are not generated automatically around the results of
286 expanding these sequences; therefore, you can concatenate them together
287 or with constant text in a single argument.
289 %% substitute one % into the program name or argument.
290 %i substitute the name of the input file being processed.
291 %b substitute the basename of the input file being processed.
292 This is the substring up to (and not including) the last period
293 and not including the directory unless -save-temps was specified
294 to put temporaries in a different location.
295 %B same as %b, but include the file suffix (text after the last period).
297 substitute a file name that has suffix SUFFIX and is chosen
298 once per compilation, and mark the argument a la %d. To reduce
299 exposure to denial-of-service attacks, the file name is now
300 chosen in a way that is hard to predict even when previously
301 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
302 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
303 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
304 had been pre-processed. Previously, %g was simply substituted
305 with a file name chosen once per compilation, without regard
306 to any appended suffix (which was therefore treated just like
307 ordinary text), making such attacks more likely to succeed.
309 like %g, but if -pipe is in effect, expands simply to "-".
311 like %g, but if -pipe is in effect, expands to nothing. (We have both
312 %| and %m to accommodate differences between system assemblers; see
313 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
315 like %g, but generates a new temporary file name even if %uSUFFIX
318 substitutes the last file name generated with %uSUFFIX, generating a
319 new one if there is no such last file name. In the absence of any
320 %uSUFFIX, this is just like %gSUFFIX, except they don't share
321 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
322 would involve the generation of two distinct file names, one
323 for each `%g.s' and another for each `%U.s'. Previously, %U was
324 simply substituted with a file name chosen for the previous %u,
325 without regard to any appended suffix.
327 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
328 writable, and if save-temps is off; otherwise, substitute the name
329 of a temporary file, just like %u. This temporary file is not
330 meant for communication between processes, but rather as a junk
333 substitutes .SUFFIX for the suffixes of a matched switch's args when
334 it is subsequently output with %*. SUFFIX is terminated by the next
336 %d marks the argument containing or following the %d as a
337 temporary file name, so that that file will be deleted if GCC exits
338 successfully. Unlike %g, this contributes no text to the argument.
339 %w marks the argument containing or following the %w as the
340 "output file" of this compilation. This puts the argument
341 into the sequence of arguments that %o will substitute later.
342 %V indicates that this compilation produces no "output file".
344 like %{...} but mark last argument supplied within
345 as a file to be deleted on failure.
346 %o substitutes the names of all the output files, with spaces
347 automatically placed around them. You should write spaces
348 around the %o as well or the results are undefined.
349 %o is for use in the specs for running the linker.
350 Input files whose names have no recognized suffix are not compiled
351 at all, but they are included among the output files, so they will
353 %O substitutes the suffix for object files. Note that this is
354 handled specially when it immediately follows %g, %u, or %U
355 (with or without a suffix argument) because of the need for
356 those to form complete file names. The handling is such that
357 %O is treated exactly as if it had already been substituted,
358 except that %g, %u, and %U do not currently support additional
359 SUFFIX characters following %O as they would following, for
361 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
362 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
363 and -B options) and -imultilib as necessary.
364 %s current argument is the name of a library or startup file of some sort.
365 Search for that file in a standard list of directories
366 and substitute the full name found.
367 %eSTR Print STR as an error message. STR is terminated by a newline.
368 Use this when inconsistent options are detected.
369 %nSTR Print STR as a notice. STR is terminated by a newline.
370 %x{OPTION} Accumulate an option for %X.
371 %X Output the accumulated linker options specified by compilations.
372 %Y Output the accumulated assembler options specified by compilations.
373 %Z Output the accumulated preprocessor options specified by compilations.
374 %a process ASM_SPEC as a spec.
375 This allows config.h to specify part of the spec for running as.
376 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
377 used here. This can be used to run a post-processor after the
378 assembler has done its job.
379 %D Dump out a -L option for each directory in startfile_prefixes.
380 If multilib_dir is set, extra entries are generated with it affixed.
381 %l process LINK_SPEC as a spec.
382 %L process LIB_SPEC as a spec.
383 %M Output multilib_os_dir.
384 %G process LIBGCC_SPEC as a spec.
385 %R Output the concatenation of target_system_root and
386 target_sysroot_suffix.
387 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
388 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
389 %C process CPP_SPEC as a spec.
390 %1 process CC1_SPEC as a spec.
391 %2 process CC1PLUS_SPEC as a spec.
392 %* substitute the variable part of a matched option. (See below.)
393 Note that each comma in the substituted string is replaced by
394 a single space. A space is appended after the last substition
395 unless there is more text in current sequence.
396 %<S remove all occurrences of -S from the command line.
397 Note - this command is position dependent. % commands in the
398 spec string before this one will see -S, % commands in the
399 spec string after this one will not.
400 %>S Similar to "%<S", but keep it in the GCC command line.
401 %<S* remove all occurrences of all switches beginning with -S from the
404 Call the named function FUNCTION, passing it ARGS. ARGS is
405 first processed as a nested spec string, then split into an
406 argument vector in the usual fashion. The function returns
407 a string which is processed as if it had appeared literally
408 as part of the current spec.
409 %{S} substitutes the -S switch, if that switch was given to GCC.
410 If that switch was not specified, this substitutes nothing.
411 Here S is a metasyntactic variable.
412 %{S*} substitutes all the switches specified to GCC whose names start
413 with -S. This is used for -o, -I, etc; switches that take
414 arguments. GCC considers `-o foo' as being one switch whose
415 name starts with `o'. %{o*} would substitute this text,
416 including the space; thus, two arguments would be generated.
417 %{S*&T*} likewise, but preserve order of S and T options (the order
418 of S and T in the spec is not significant). Can be any number
419 of ampersand-separated variables; for each the wild card is
420 optional. Useful for CPP as %{D*&U*&A*}.
422 %{S:X} substitutes X, if the -S switch was given to GCC.
423 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
424 %{S*:X} substitutes X if one or more switches whose names start
425 with -S was given to GCC. Normally X is substituted only
426 once, no matter how many such switches appeared. However,
427 if %* appears somewhere in X, then X will be substituted
428 once for each matching switch, with the %* replaced by the
429 part of that switch that matched the '*'. A space will be
430 appended after the last substition unless there is more
431 text in current sequence.
432 %{.S:X} substitutes X, if processing a file with suffix S.
433 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
434 %{,S:X} substitutes X, if processing a file which will use spec S.
435 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
437 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
438 combined with '!', '.', ',', and '*' as above binding stronger
440 If %* appears in X, all of the alternatives must be starred, and
441 only the first matching alternative is substituted.
442 %{%:function(args):X}
443 Call function named FUNCTION with args ARGS. If the function
444 returns non-NULL, then X is substituted, if it returns
445 NULL, it isn't substituted.
446 %{S:X; if S was given to GCC, substitutes X;
447 T:Y; else if T was given to GCC, substitutes Y;
448 :D} else substitutes D. There can be as many clauses as you need.
449 This may be combined with '.', '!', ',', '|', and '*' as above.
451 %(Spec) processes a specification defined in a specs file as *Spec:
453 The conditional text X in a %{S:X} or similar construct may contain
454 other nested % constructs or spaces, or even newlines. They are
455 processed as usual, as described above. Trailing white space in X is
456 ignored. White space may also appear anywhere on the left side of the
457 colon in these constructs, except between . or * and the corresponding
460 The -O, -f, -g, -m, and -W switches are handled specifically in these
461 constructs. If another value of -O or the negated form of a -f, -m, or
462 -W switch is found later in the command line, the earlier switch
463 value is ignored, except with {S*} where S is just one letter; this
464 passes all matching options.
466 The character | at the beginning of the predicate text is used to indicate
467 that a command should be piped to the following command, but only if -pipe
470 Note that it is built into GCC which switches take arguments and which
471 do not. You might think it would be useful to generalize this to
472 allow each compiler's spec to say which switches take arguments. But
473 this cannot be done in a consistent fashion. GCC cannot even decide
474 which input files have been specified without knowing which switches
475 take arguments, and it must know which input files to compile in order
476 to tell which compilers to run.
478 GCC also knows implicitly that arguments starting in `-l' are to be
479 treated as compiler output files, and passed to the linker in their
480 proper position among the other output files. */
482 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
484 /* config.h can define ASM_SPEC to provide extra args to the assembler
485 or extra switch-translations. */
490 /* config.h can define ASM_FINAL_SPEC to run a post processor after
491 the assembler has run. */
492 #ifndef ASM_FINAL_SPEC
493 #define ASM_FINAL_SPEC \
495 objcopy --extract-dwo \
496 %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \
497 %{c:%{o*:%:replace-extension(%{o*:%*} .dwo)}%{!o*:%b.dwo}}%{!c:%b.dwo} \n\
498 objcopy --strip-dwo \
499 %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \
503 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
504 or extra switch-translations. */
509 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
510 or extra switch-translations. */
515 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
516 or extra switch-translations. */
518 #define CC1PLUS_SPEC ""
521 /* config.h can define LINK_SPEC to provide extra args to the linker
522 or extra switch-translations. */
527 /* config.h can define LIB_SPEC to override the default libraries. */
529 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
532 /* When using -fsplit-stack we need to wrap pthread_create, in order
533 to initialize the stack guard. We always use wrapping, rather than
534 shared library ordering, and we keep the wrapper function in
535 libgcc. This is not yet a real spec, though it could become one;
536 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping
537 only works with GNU ld and gold. */
538 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}"
541 #define STATIC_LIBASAN_LIBS \
542 " %{static-libasan:%:include(libsanitizer.spec)%(link_libasan)}"
543 #ifdef LIBASAN_EARLY_SPEC
544 #define LIBASAN_SPEC STATIC_LIBASAN_LIBS
545 #elif defined(HAVE_LD_STATIC_DYNAMIC)
546 #define LIBASAN_SPEC "%{static-libasan:" LD_STATIC_OPTION \
547 "} -lasan %{static-libasan:" LD_DYNAMIC_OPTION "}" \
550 #define LIBASAN_SPEC "-lasan" STATIC_LIBASAN_LIBS
554 #ifndef LIBASAN_EARLY_SPEC
555 #define LIBASAN_EARLY_SPEC ""
559 #define STATIC_LIBTSAN_LIBS \
560 " %{static-libtsan:%:include(libsanitizer.spec)%(link_libtsan)}"
561 #ifdef LIBTSAN_EARLY_SPEC
562 #define LIBTSAN_SPEC STATIC_LIBTSAN_LIBS
563 #elif defined(HAVE_LD_STATIC_DYNAMIC)
564 #define LIBTSAN_SPEC "%{static-libtsan:" LD_STATIC_OPTION \
565 "} -ltsan %{static-libtsan:" LD_DYNAMIC_OPTION "}" \
568 #define LIBTSAN_SPEC "-ltsan" STATIC_LIBTSAN_LIBS
572 #ifndef LIBTSAN_EARLY_SPEC
573 #define LIBTSAN_EARLY_SPEC ""
577 #define STATIC_LIBLSAN_LIBS \
578 " %{static-liblsan:%:include(libsanitizer.spec)%(link_liblsan)}"
579 #ifdef HAVE_LD_STATIC_DYNAMIC
580 #define LIBLSAN_SPEC "%{!shared:%{static-liblsan:" LD_STATIC_OPTION \
581 "} -llsan %{static-liblsan:" LD_DYNAMIC_OPTION "}" \
582 STATIC_LIBLSAN_LIBS "}"
584 #define LIBLSAN_SPEC "%{!shared:-llsan" STATIC_LIBLSAN_LIBS "}"
588 #ifndef LIBUBSAN_SPEC
589 #define STATIC_LIBUBSAN_LIBS \
590 " %{static-libubsan:%:include(libsanitizer.spec)%(link_libubsan)}"
591 #ifdef HAVE_LD_STATIC_DYNAMIC
592 #define LIBUBSAN_SPEC "%{static-libubsan:" LD_STATIC_OPTION \
593 "} -lubsan %{static-libubsan:" LD_DYNAMIC_OPTION "}" \
596 #define LIBUBSAN_SPEC "-lubsan" STATIC_LIBUBSAN_LIBS
600 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
603 #if defined(REAL_LIBGCC_SPEC)
604 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
605 #elif defined(LINK_LIBGCC_SPECIAL_1)
606 /* Have gcc do the search for libgcc.a. */
607 #define LIBGCC_SPEC "libgcc.a%s"
609 #define LIBGCC_SPEC "-lgcc"
613 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
614 #ifndef STARTFILE_SPEC
615 #define STARTFILE_SPEC \
616 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
619 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
621 #define ENDFILE_SPEC ""
625 #define LINKER_NAME "collect2"
628 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
629 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
634 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
636 #ifndef ASM_DEBUG_SPEC
637 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
638 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
639 # define ASM_DEBUG_SPEC \
640 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
641 ? "%{!g0:%{gdwarf*:--gdwarf2}%{!gdwarf*:%{g*:--gstabs}}}" ASM_MAP \
642 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
644 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
645 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
647 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
648 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
652 #ifndef ASM_DEBUG_SPEC
653 # define ASM_DEBUG_SPEC ""
656 /* Here is the spec for running the linker, after compiling all files. */
658 /* This is overridable by the target in case they need to specify the
659 -lgcc and -lc order specially, yet not require them to override all
660 of LINK_COMMAND_SPEC. */
661 #ifndef LINK_GCC_C_SEQUENCE_SPEC
662 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
665 #ifndef LINK_SSP_SPEC
666 #ifdef TARGET_LIBC_PROVIDES_SSP
667 #define LINK_SSP_SPEC "%{fstack-protector:}"
669 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-strong|fstack-protector-all:-lssp_nonshared -lssp}"
673 #ifndef LINK_PIE_SPEC
675 #define LINK_PIE_SPEC "%{pie:-pie} "
677 #define LINK_PIE_SPEC "%{pie:} "
681 #ifndef LINK_BUILDID_SPEC
682 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
683 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
687 /* Conditional to test whether the LTO plugin is used or not.
688 FIXME: For slim LTO we will need to enable plugin unconditionally. This
689 still cause problems with PLUGIN_LD != LD and when plugin is built but
690 not useable. For GCC 4.6 we don't support slim LTO and thus we can enable
691 plugin only when LTO is enabled. We still honor explicit
692 -fuse-linker-plugin if the linker used understands -plugin. */
694 /* The linker has some plugin support. */
695 #if HAVE_LTO_PLUGIN > 0
696 /* The linker used has full plugin support, use LTO plugin by default. */
697 #if HAVE_LTO_PLUGIN == 2
698 #define PLUGIN_COND "!fno-use-linker-plugin:%{!fno-lto"
699 #define PLUGIN_COND_CLOSE "}"
701 /* The linker used has limited plugin support, use LTO plugin with explicit
702 -fuse-linker-plugin. */
703 #define PLUGIN_COND "fuse-linker-plugin"
704 #define PLUGIN_COND_CLOSE ""
706 #define LINK_PLUGIN_SPEC \
708 -plugin %(linker_plugin_file) \
709 -plugin-opt=%(lto_wrapper) \
710 -plugin-opt=-fresolution=%u.res \
711 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
714 /* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */
715 #define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\
716 %e-fuse-linker-plugin is not supported in this configuration}"
719 /* Linker command line options for -fsanitize= early on the command line. */
720 #ifndef SANITIZER_EARLY_SPEC
721 #define SANITIZER_EARLY_SPEC "\
722 %{!nostdlib:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_EARLY_SPEC "} \
723 %{%:sanitize(thread):" LIBTSAN_EARLY_SPEC "}}}"
726 /* Linker command line options for -fsanitize= late on the command line. */
727 #ifndef SANITIZER_SPEC
728 #define SANITIZER_SPEC "\
729 %{!nostdlib:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_SPEC "\
730 %{static:%ecannot specify -static with -fsanitize=address}\
731 %{%:sanitize(thread):%e-fsanitize=address is incompatible with -fsanitize=thread}}\
732 %{%:sanitize(thread):" LIBTSAN_SPEC "\
733 %{!pie:%{!shared:%e-fsanitize=thread linking must be done with -pie or -shared}}}\
734 %{%:sanitize(undefined):" LIBUBSAN_SPEC "}\
735 %{%:sanitize(leak):" LIBLSAN_SPEC "}}}"
738 /* This is the spec to use, once the code for creating the vtable
739 verification runtime library, libvtv.so, has been created. Currently
740 the vtable verification runtime functions are in libstdc++, so we use
741 the spec just below this one. */
742 #ifndef VTABLE_VERIFICATION_SPEC
743 #define VTABLE_VERIFICATION_SPEC "\
744 %{!nostdlib:%{fvtable-verify=std: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}\
745 %{fvtable-verify=preinit: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}}"
748 /* -u* was put back because both BSD and SysV seem to support it. */
749 /* %{static:} simply prevents an error message if the target machine
750 doesn't handle -static. */
751 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
752 scripts which exist in user specified directories, or in standard
754 /* We pass any -flto flags on to the linker, which is expected
755 to understand them. In practice, this means it had better be collect2. */
756 /* %{e*} includes -export-dynamic; see comment in common.opt. */
757 #ifndef LINK_COMMAND_SPEC
758 #define LINK_COMMAND_SPEC "\
759 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
762 "%{flto|flto=*:%<fcompare-debug*} \
763 %{flto} %{flto=*} %l " LINK_PIE_SPEC \
764 "%{fuse-ld=*:-fuse-ld=%*}\
765 %X %{o*} %{e*} %{N} %{n} %{r}\
766 %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}} " VTABLE_VERIFICATION_SPEC " \
767 %{static:} %{L*} %(mfwrap) %(link_libgcc) " SANITIZER_EARLY_SPEC " %o\
768 %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
769 %{fgnu-tm:%:include(libitm.spec)%(link_itm)}\
770 %(mflib) " STACK_SPLIT_SPEC "\
771 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} " SANITIZER_SPEC " \
772 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
773 %{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}"
776 #ifndef LINK_LIBGCC_SPEC
777 /* Generate -L options for startfile prefix list. */
778 # define LINK_LIBGCC_SPEC "%D"
781 #ifndef STARTFILE_PREFIX_SPEC
782 # define STARTFILE_PREFIX_SPEC ""
786 # define SYSROOT_SPEC "--sysroot=%R"
789 #ifndef SYSROOT_SUFFIX_SPEC
790 # define SYSROOT_SUFFIX_SPEC ""
793 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
794 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
797 static const char *asm_debug
= ASM_DEBUG_SPEC
;
798 static const char *cpp_spec
= CPP_SPEC
;
799 static const char *cc1_spec
= CC1_SPEC
;
800 static const char *cc1plus_spec
= CC1PLUS_SPEC
;
801 static const char *link_gcc_c_sequence_spec
= LINK_GCC_C_SEQUENCE_SPEC
;
802 static const char *link_ssp_spec
= LINK_SSP_SPEC
;
803 static const char *asm_spec
= ASM_SPEC
;
804 static const char *asm_final_spec
= ASM_FINAL_SPEC
;
805 static const char *link_spec
= LINK_SPEC
;
806 static const char *lib_spec
= LIB_SPEC
;
807 static const char *link_gomp_spec
= "";
808 static const char *libgcc_spec
= LIBGCC_SPEC
;
809 static const char *endfile_spec
= ENDFILE_SPEC
;
810 static const char *startfile_spec
= STARTFILE_SPEC
;
811 static const char *linker_name_spec
= LINKER_NAME
;
812 static const char *linker_plugin_file_spec
= "";
813 static const char *lto_wrapper_spec
= "";
814 static const char *lto_gcc_spec
= "";
815 static const char *link_command_spec
= LINK_COMMAND_SPEC
;
816 static const char *link_libgcc_spec
= LINK_LIBGCC_SPEC
;
817 static const char *startfile_prefix_spec
= STARTFILE_PREFIX_SPEC
;
818 static const char *sysroot_spec
= SYSROOT_SPEC
;
819 static const char *sysroot_suffix_spec
= SYSROOT_SUFFIX_SPEC
;
820 static const char *sysroot_hdrs_suffix_spec
= SYSROOT_HEADERS_SUFFIX_SPEC
;
821 static const char *self_spec
= "";
823 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
824 There should be no need to override these in target dependent files,
825 but we need to copy them to the specs file so that newer versions
826 of the GCC driver can correctly drive older tool chains with the
827 appropriate -B options. */
829 /* When cpplib handles traditional preprocessing, get rid of this, and
830 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
831 that we default the front end language better. */
832 static const char *trad_capable_cpp
=
833 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}";
835 /* We don't wrap .d files in %W{} since a missing .d file, and
836 therefore no dependency entry, confuses make into thinking a .o
837 file that happens to exist is up-to-date. */
838 static const char *cpp_unique_options
=
839 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
840 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
841 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
842 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
843 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
844 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
845 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
846 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
849 /* This contains cpp options which are common with cc1_options and are passed
850 only when preprocessing only to avoid duplication. We pass the cc1 spec
851 options to the preprocessor so that it the cc1 spec may manipulate
852 options used to set target flags. Those special target flags settings may
853 in turn cause preprocessor symbols to be defined specially. */
854 static const char *cpp_options
=
855 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
856 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
857 %{undef} %{save-temps*:-fpch-preprocess}";
859 /* This contains cpp options which are not passed when the preprocessor
860 output will be used by another program. */
861 static const char *cpp_debug_options
= "%{d*}";
863 /* NB: This is shared amongst all front-ends, except for Ada. */
864 static const char *cc1_options
=
865 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
866 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
867 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
868 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
869 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
870 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
871 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
872 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\
873 %{-target-help:--target-help}\
874 %{-version:--version}\
875 %{-help=*:--help=%*}\
876 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
877 %{fsyntax-only:-o %j} %{-param*}\
878 %{coverage:-fprofile-arcs -ftest-coverage}";
880 static const char *asm_options
=
881 "%{-target-help:%:print-asm-header()} "
883 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
884 to the assembler equivalents. */
885 "%{v} %{w:-W} %{I*} "
887 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
889 static const char *invoke_as
=
890 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
892 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
893 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
897 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
898 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
902 /* Some compilers have limits on line lengths, and the multilib_select
903 and/or multilib_matches strings can be very long, so we build them at
905 static struct obstack multilib_obstack
;
906 static const char *multilib_select
;
907 static const char *multilib_matches
;
908 static const char *multilib_defaults
;
909 static const char *multilib_exclusions
;
910 static const char *multilib_reuse
;
912 /* Check whether a particular argument is a default argument. */
914 #ifndef MULTILIB_DEFAULTS
915 #define MULTILIB_DEFAULTS { "" }
918 static const char *const multilib_defaults_raw
[] = MULTILIB_DEFAULTS
;
920 #ifndef DRIVER_SELF_SPECS
921 #define DRIVER_SELF_SPECS ""
924 /* Linking to libgomp implies pthreads. This is particularly important
925 for targets that use different start files and suchlike. */
926 #ifndef GOMP_SELF_SPECS
927 #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}"
930 /* Likewise for -fgnu-tm. */
931 #ifndef GTM_SELF_SPECS
932 #define GTM_SELF_SPECS "%{fgnu-tm: -pthread}"
935 static const char *const driver_self_specs
[] = {
936 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
937 DRIVER_SELF_SPECS
, CONFIGURE_SPECS
, GOMP_SELF_SPECS
, GTM_SELF_SPECS
940 #ifndef OPTION_DEFAULT_SPECS
941 #define OPTION_DEFAULT_SPECS { "", "" }
950 static const struct default_spec
951 option_default_specs
[] = { OPTION_DEFAULT_SPECS
};
955 struct user_specs
*next
;
956 const char *filename
;
959 static struct user_specs
*user_specs_head
, *user_specs_tail
;
962 /* Record the mapping from file suffixes for compilation specs. */
966 const char *suffix
; /* Use this compiler for input files
967 whose names end in this suffix. */
969 const char *spec
; /* To use this compiler, run this spec. */
971 const char *cpp_spec
; /* If non-NULL, substitute this spec
972 for `%C', rather than the usual
974 const int combinable
; /* If nonzero, compiler can deal with
975 multiple source files at once (IMA). */
976 const int needs_preprocessing
; /* If nonzero, source files need to
977 be run through a preprocessor. */
980 /* Pointer to a vector of `struct compiler' that gives the spec for
981 compiling a file, based on its suffix.
982 A file that does not end in any of these suffixes will be passed
983 unchanged to the loader and nothing else will be done to it.
985 An entry containing two 0s is used to terminate the vector.
987 If multiple entries match a file, the last matching one is used. */
989 static struct compiler
*compilers
;
991 /* Number of entries in `compilers', not counting the null terminator. */
993 static int n_compilers
;
995 /* The default list of file name suffixes and their compilation specs. */
997 static const struct compiler default_compilers
[] =
999 /* Add lists of suffixes of known languages here. If those languages
1000 were not present when we built the driver, we will hit these copies
1001 and be given a more meaningful error than "file not used since
1002 linking is not done". */
1003 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
1004 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
1005 {".mii", "#Objective-C++", 0, 0, 0},
1006 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
1007 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
1008 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
1009 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
1010 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
1011 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
1012 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
1013 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
1014 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
1015 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
1016 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
1017 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
1018 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
1019 {".r", "#Ratfor", 0, 0, 0},
1020 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
1021 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
1022 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
1023 {".go", "#Go", 0, 1, 0},
1024 /* Next come the entries for C. */
1025 {".c", "@c", 0, 0, 1},
1027 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1028 external preprocessor if -save-temps is given. */
1029 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1032 %eGNU C no longer supports -traditional without -E}\
1033 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1034 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1035 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1037 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1038 cc1 %(cpp_unique_options) %(cc1_options)}}}\
1039 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
1041 "%{!E:%e-E or -x required when input is from standard input}\
1042 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
1043 {".h", "@c-header", 0, 0, 0},
1045 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1046 external preprocessor if -save-temps is given. */
1047 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1049 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1050 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1051 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1053 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
1054 %W{o*:--output-pch=%*}}%V}\
1055 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1056 cc1 %(cpp_unique_options) %(cc1_options)\
1057 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
1058 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
1059 {".i", "@cpp-output", 0, 0, 0},
1061 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
1062 {".s", "@assembler", 0, 0, 0},
1064 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
1065 {".sx", "@assembler-with-cpp", 0, 0, 0},
1066 {".S", "@assembler-with-cpp", 0, 0, 0},
1067 {"@assembler-with-cpp",
1068 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
1069 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1070 %{E|M|MM:%(cpp_debug_options)}\
1071 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1072 as %(asm_debug) %(asm_options) %|.s %A }}}}"
1074 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1075 %{E|M|MM:%(cpp_debug_options)}\
1076 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1077 as %(asm_debug) %(asm_options) %m.s %A }}}}"
1082 /* Mark end of table. */
1086 /* Number of elements in default_compilers, not counting the terminator. */
1088 static const int n_default_compilers
= ARRAY_SIZE (default_compilers
) - 1;
1090 typedef char *char_p
; /* For DEF_VEC_P. */
1092 /* A vector of options to give to the linker.
1093 These options are accumulated by %x,
1094 and substituted into the linker command with %X. */
1095 static vec
<char_p
> linker_options
;
1097 /* A vector of options to give to the assembler.
1098 These options are accumulated by -Wa,
1099 and substituted into the assembler command with %Y. */
1100 static vec
<char_p
> assembler_options
;
1102 /* A vector of options to give to the preprocessor.
1103 These options are accumulated by -Wp,
1104 and substituted into the preprocessor command with %Z. */
1105 static vec
<char_p
> preprocessor_options
;
1108 skip_whitespace (char *p
)
1112 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1113 be considered whitespace. */
1114 if (p
[0] == '\n' && p
[1] == '\n' && p
[2] == '\n')
1116 else if (*p
== '\n' || *p
== ' ' || *p
== '\t')
1130 /* Structures to keep track of prefixes to try when looking for files. */
1134 const char *prefix
; /* String to prepend to the path. */
1135 struct prefix_list
*next
; /* Next in linked list. */
1136 int require_machine_suffix
; /* Don't use without machine_suffix. */
1137 /* 2 means try both machine_suffix and just_machine_suffix. */
1138 int priority
; /* Sort key - priority within list. */
1139 int os_multilib
; /* 1 if OS multilib scheme should be used,
1140 0 for GCC multilib scheme. */
1145 struct prefix_list
*plist
; /* List of prefixes to try */
1146 int max_len
; /* Max length of a prefix in PLIST */
1147 const char *name
; /* Name of this list (used in config stuff) */
1150 /* List of prefixes to try when looking for executables. */
1152 static struct path_prefix exec_prefixes
= { 0, 0, "exec" };
1154 /* List of prefixes to try when looking for startup (crt0) files. */
1156 static struct path_prefix startfile_prefixes
= { 0, 0, "startfile" };
1158 /* List of prefixes to try when looking for include files. */
1160 static struct path_prefix include_prefixes
= { 0, 0, "include" };
1162 /* Suffix to attach to directories searched for commands.
1163 This looks like `MACHINE/VERSION/'. */
1165 static const char *machine_suffix
= 0;
1167 /* Suffix to attach to directories searched for commands.
1168 This is just `MACHINE/'. */
1170 static const char *just_machine_suffix
= 0;
1172 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1174 static const char *gcc_exec_prefix
;
1176 /* Adjusted value of standard_libexec_prefix. */
1178 static const char *gcc_libexec_prefix
;
1180 /* Default prefixes to attach to command names. */
1182 #ifndef STANDARD_STARTFILE_PREFIX_1
1183 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1185 #ifndef STANDARD_STARTFILE_PREFIX_2
1186 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1189 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1190 #undef MD_EXEC_PREFIX
1191 #undef MD_STARTFILE_PREFIX
1192 #undef MD_STARTFILE_PREFIX_1
1195 /* If no prefixes defined, use the null string, which will disable them. */
1196 #ifndef MD_EXEC_PREFIX
1197 #define MD_EXEC_PREFIX ""
1199 #ifndef MD_STARTFILE_PREFIX
1200 #define MD_STARTFILE_PREFIX ""
1202 #ifndef MD_STARTFILE_PREFIX_1
1203 #define MD_STARTFILE_PREFIX_1 ""
1206 /* These directories are locations set at configure-time based on the
1207 --prefix option provided to configure. Their initializers are
1208 defined in Makefile.in. These paths are not *directly* used when
1209 gcc_exec_prefix is set because, in that case, we know where the
1210 compiler has been installed, and use paths relative to that
1211 location instead. */
1212 static const char *const standard_exec_prefix
= STANDARD_EXEC_PREFIX
;
1213 static const char *const standard_libexec_prefix
= STANDARD_LIBEXEC_PREFIX
;
1214 static const char *const standard_bindir_prefix
= STANDARD_BINDIR_PREFIX
;
1215 static const char *const standard_startfile_prefix
= STANDARD_STARTFILE_PREFIX
;
1217 /* For native compilers, these are well-known paths containing
1218 components that may be provided by the system. For cross
1219 compilers, these paths are not used. */
1220 static const char *md_exec_prefix
= MD_EXEC_PREFIX
;
1221 static const char *md_startfile_prefix
= MD_STARTFILE_PREFIX
;
1222 static const char *md_startfile_prefix_1
= MD_STARTFILE_PREFIX_1
;
1223 static const char *const standard_startfile_prefix_1
1224 = STANDARD_STARTFILE_PREFIX_1
;
1225 static const char *const standard_startfile_prefix_2
1226 = STANDARD_STARTFILE_PREFIX_2
;
1228 /* A relative path to be used in finding the location of tools
1229 relative to the driver. */
1230 static const char *const tooldir_base_prefix
= TOOLDIR_BASE_PREFIX
;
1232 /* Subdirectory to use for locating libraries. Set by
1233 set_multilib_dir based on the compilation options. */
1235 static const char *multilib_dir
;
1237 /* Subdirectory to use for locating libraries in OS conventions. Set by
1238 set_multilib_dir based on the compilation options. */
1240 static const char *multilib_os_dir
;
1242 /* Subdirectory to use for locating libraries in multiarch conventions. Set by
1243 set_multilib_dir based on the compilation options. */
1245 static const char *multiarch_dir
;
1247 /* Structure to keep track of the specs that have been defined so far.
1248 These are accessed using %(specname) in a compiler or link
1253 /* The following 2 fields must be first */
1254 /* to allow EXTRA_SPECS to be initialized */
1255 const char *name
; /* name of the spec. */
1256 const char *ptr
; /* available ptr if no static pointer */
1258 /* The following fields are not initialized */
1259 /* by EXTRA_SPECS */
1260 const char **ptr_spec
; /* pointer to the spec itself. */
1261 struct spec_list
*next
; /* Next spec in linked list. */
1262 int name_len
; /* length of the name */
1263 bool user_p
; /* whether string come from file spec. */
1264 bool alloc_p
; /* whether string was allocated */
1267 #define INIT_STATIC_SPEC(NAME,PTR) \
1268 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, false, false }
1270 /* List of statically defined specs. */
1271 static struct spec_list static_specs
[] =
1273 INIT_STATIC_SPEC ("asm", &asm_spec
),
1274 INIT_STATIC_SPEC ("asm_debug", &asm_debug
),
1275 INIT_STATIC_SPEC ("asm_final", &asm_final_spec
),
1276 INIT_STATIC_SPEC ("asm_options", &asm_options
),
1277 INIT_STATIC_SPEC ("invoke_as", &invoke_as
),
1278 INIT_STATIC_SPEC ("cpp", &cpp_spec
),
1279 INIT_STATIC_SPEC ("cpp_options", &cpp_options
),
1280 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options
),
1281 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options
),
1282 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp
),
1283 INIT_STATIC_SPEC ("cc1", &cc1_spec
),
1284 INIT_STATIC_SPEC ("cc1_options", &cc1_options
),
1285 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec
),
1286 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec
),
1287 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec
),
1288 INIT_STATIC_SPEC ("endfile", &endfile_spec
),
1289 INIT_STATIC_SPEC ("link", &link_spec
),
1290 INIT_STATIC_SPEC ("lib", &lib_spec
),
1291 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec
),
1292 INIT_STATIC_SPEC ("libgcc", &libgcc_spec
),
1293 INIT_STATIC_SPEC ("startfile", &startfile_spec
),
1294 INIT_STATIC_SPEC ("cross_compile", &cross_compile
),
1295 INIT_STATIC_SPEC ("version", &compiler_version
),
1296 INIT_STATIC_SPEC ("multilib", &multilib_select
),
1297 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults
),
1298 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra
),
1299 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches
),
1300 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions
),
1301 INIT_STATIC_SPEC ("multilib_options", &multilib_options
),
1302 INIT_STATIC_SPEC ("multilib_reuse", &multilib_reuse
),
1303 INIT_STATIC_SPEC ("linker", &linker_name_spec
),
1304 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec
),
1305 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec
),
1306 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec
),
1307 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec
),
1308 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix
),
1309 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix
),
1310 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1
),
1311 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec
),
1312 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec
),
1313 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec
),
1314 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec
),
1315 INIT_STATIC_SPEC ("self_spec", &self_spec
),
1318 #ifdef EXTRA_SPECS /* additional specs needed */
1319 /* Structure to keep track of just the first two args of a spec_list.
1320 That is all that the EXTRA_SPECS macro gives us. */
1323 const char *const name
;
1324 const char *const ptr
;
1327 static const struct spec_list_1 extra_specs_1
[] = { EXTRA_SPECS
};
1328 static struct spec_list
*extra_specs
= (struct spec_list
*) 0;
1331 /* List of dynamically allocates specs that have been defined so far. */
1333 static struct spec_list
*specs
= (struct spec_list
*) 0;
1335 /* List of static spec functions. */
1337 static const struct spec_function static_spec_functions
[] =
1339 { "getenv", getenv_spec_function
},
1340 { "if-exists", if_exists_spec_function
},
1341 { "if-exists-else", if_exists_else_spec_function
},
1342 { "sanitize", sanitize_spec_function
},
1343 { "replace-outfile", replace_outfile_spec_function
},
1344 { "remove-outfile", remove_outfile_spec_function
},
1345 { "version-compare", version_compare_spec_function
},
1346 { "include", include_spec_function
},
1347 { "find-file", find_file_spec_function
},
1348 { "find-plugindir", find_plugindir_spec_function
},
1349 { "print-asm-header", print_asm_header_spec_function
},
1350 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function
},
1351 { "compare-debug-self-opt", compare_debug_self_opt_spec_function
},
1352 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function
},
1353 { "pass-through-libs", pass_through_libs_spec_func
},
1354 { "replace-extension", replace_extension_spec_func
},
1355 #ifdef EXTRA_SPEC_FUNCTIONS
1356 EXTRA_SPEC_FUNCTIONS
1361 static int processing_spec_function
;
1363 /* Add appropriate libgcc specs to OBSTACK, taking into account
1364 various permutations of -shared-libgcc, -shared, and such. */
1366 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1368 #ifndef USE_LD_AS_NEEDED
1369 #define USE_LD_AS_NEEDED 0
1373 init_gcc_specs (struct obstack
*obstack
, const char *shared_name
,
1374 const char *static_name
, const char *eh_name
)
1378 buf
= concat ("%{static|static-libgcc:", static_name
, " ", eh_name
, "}"
1379 "%{!static:%{!static-libgcc:"
1380 #if USE_LD_AS_NEEDED
1381 "%{!shared-libgcc:",
1382 static_name
, " " LD_AS_NEEDED_OPTION
" ",
1383 shared_name
, " " LD_NO_AS_NEEDED_OPTION
1386 shared_name
, "%{!shared: ", static_name
, "}"
1390 "%{!shared-libgcc:", static_name
, " ", eh_name
, "}"
1391 "%{shared-libgcc:", shared_name
, " ", static_name
, "}"
1395 "%{shared-libgcc:", shared_name
, "}"
1396 "%{!shared-libgcc:", static_name
, "}"
1399 "%{shared:", shared_name
, "}"
1404 obstack_grow (obstack
, buf
, strlen (buf
));
1407 #endif /* ENABLE_SHARED_LIBGCC */
1409 /* Initialize the specs lookup routines. */
1414 struct spec_list
*next
= (struct spec_list
*) 0;
1415 struct spec_list
*sl
= (struct spec_list
*) 0;
1419 return; /* Already initialized. */
1422 fnotice (stderr
, "Using built-in specs.\n");
1425 extra_specs
= XCNEWVEC (struct spec_list
, ARRAY_SIZE (extra_specs_1
));
1427 for (i
= ARRAY_SIZE (extra_specs_1
) - 1; i
>= 0; i
--)
1429 sl
= &extra_specs
[i
];
1430 sl
->name
= extra_specs_1
[i
].name
;
1431 sl
->ptr
= extra_specs_1
[i
].ptr
;
1433 sl
->name_len
= strlen (sl
->name
);
1434 sl
->ptr_spec
= &sl
->ptr
;
1439 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1441 sl
= &static_specs
[i
];
1446 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1447 /* ??? If neither -shared-libgcc nor --static-libgcc was
1448 seen, then we should be making an educated guess. Some proposed
1449 heuristics for ELF include:
1451 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1452 program will be doing dynamic loading, which will likely
1453 need the shared libgcc.
1455 (2) If "-ldl", then it's also a fair bet that we're doing
1458 (3) For each ET_DYN we're linking against (either through -lfoo
1459 or /some/path/foo.so), check to see whether it or one of
1460 its dependencies depends on a shared libgcc.
1464 If the runtime is fixed to look for program headers instead
1465 of calling __register_frame_info at all, for each object,
1466 use the shared libgcc if any EH symbol referenced.
1468 If crtstuff is fixed to not invoke __register_frame_info
1469 automatically, for each object, use the shared libgcc if
1470 any non-empty unwind section found.
1472 Doing any of this probably requires invoking an external program to
1473 do the actual object file scanning. */
1475 const char *p
= libgcc_spec
;
1478 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1479 when given the proper command line arguments. */
1482 if (in_sep
&& *p
== '-' && strncmp (p
, "-lgcc", 5) == 0)
1484 init_gcc_specs (&obstack
,
1486 #ifdef USE_LIBUNWIND_EXCEPTIONS
1492 #ifdef USE_LIBUNWIND_EXCEPTIONS
1493 # ifdef HAVE_LD_STATIC_DYNAMIC
1494 " %{!static:" LD_STATIC_OPTION
"} -lunwind"
1495 " %{!static:" LD_DYNAMIC_OPTION
"}"
1505 else if (in_sep
&& *p
== 'l' && strncmp (p
, "libgcc.a%s", 10) == 0)
1507 /* Ug. We don't know shared library extensions. Hope that
1508 systems that use this form don't do shared libraries. */
1509 init_gcc_specs (&obstack
,
1513 #ifdef USE_LIBUNWIND_EXCEPTIONS
1522 obstack_1grow (&obstack
, *p
);
1523 in_sep
= (*p
== ' ');
1528 obstack_1grow (&obstack
, '\0');
1529 libgcc_spec
= XOBFINISH (&obstack
, const char *);
1532 #ifdef USE_AS_TRADITIONAL_FORMAT
1533 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1535 static const char tf
[] = "--traditional-format ";
1536 obstack_grow (&obstack
, tf
, sizeof (tf
) - 1);
1537 obstack_grow0 (&obstack
, asm_spec
, strlen (asm_spec
));
1538 asm_spec
= XOBFINISH (&obstack
, const char *);
1542 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \
1543 defined LINKER_HASH_STYLE
1544 # ifdef LINK_BUILDID_SPEC
1545 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1546 obstack_grow (&obstack
, LINK_BUILDID_SPEC
, sizeof (LINK_BUILDID_SPEC
) - 1);
1548 # ifdef LINK_EH_SPEC
1549 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1550 obstack_grow (&obstack
, LINK_EH_SPEC
, sizeof (LINK_EH_SPEC
) - 1);
1552 # ifdef LINKER_HASH_STYLE
1553 /* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had
1556 static const char hash_style
[] = "--hash-style=";
1557 obstack_grow (&obstack
, hash_style
, sizeof (hash_style
) - 1);
1558 obstack_grow (&obstack
, LINKER_HASH_STYLE
, sizeof (LINKER_HASH_STYLE
) - 1);
1559 obstack_1grow (&obstack
, ' ');
1562 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
1563 link_spec
= XOBFINISH (&obstack
, const char *);
1569 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1570 removed; If the spec starts with a + then SPEC is added to the end of the
1574 set_spec (const char *name
, const char *spec
, bool user_p
)
1576 struct spec_list
*sl
;
1577 const char *old_spec
;
1578 int name_len
= strlen (name
);
1581 /* If this is the first call, initialize the statically allocated specs. */
1584 struct spec_list
*next
= (struct spec_list
*) 0;
1585 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1587 sl
= &static_specs
[i
];
1594 /* See if the spec already exists. */
1595 for (sl
= specs
; sl
; sl
= sl
->next
)
1596 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, name
))
1601 /* Not found - make it. */
1602 sl
= XNEW (struct spec_list
);
1603 sl
->name
= xstrdup (name
);
1604 sl
->name_len
= name_len
;
1605 sl
->ptr_spec
= &sl
->ptr
;
1607 *(sl
->ptr_spec
) = "";
1612 old_spec
= *(sl
->ptr_spec
);
1613 *(sl
->ptr_spec
) = ((spec
[0] == '+' && ISSPACE ((unsigned char)spec
[1]))
1614 ? concat (old_spec
, spec
+ 1, NULL
)
1619 fnotice (stderr
, "Setting spec %s to '%s'\n\n", name
, *(sl
->ptr_spec
));
1622 /* Free the old spec. */
1623 if (old_spec
&& sl
->alloc_p
)
1624 free (CONST_CAST (char *, old_spec
));
1626 sl
->user_p
= user_p
;
1630 /* Accumulate a command (program name and args), and run it. */
1632 typedef const char *const_char_p
; /* For DEF_VEC_P. */
1634 /* Vector of pointers to arguments in the current line of specifications. */
1636 static vec
<const_char_p
> argbuf
;
1638 /* Position in the argbuf vector containing the name of the output file
1639 (the value associated with the "-o" flag). */
1641 static int have_o_argbuf_index
= 0;
1643 /* Were the options -c, -S or -E passed. */
1644 static int have_c
= 0;
1646 /* Was the option -o passed. */
1647 static int have_o
= 0;
1649 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1650 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1653 static struct temp_name
{
1654 const char *suffix
; /* suffix associated with the code. */
1655 int length
; /* strlen (suffix). */
1656 int unique
; /* Indicates whether %g or %u/%U was used. */
1657 const char *filename
; /* associated filename. */
1658 int filename_length
; /* strlen (filename). */
1659 struct temp_name
*next
;
1662 /* Number of commands executed so far. */
1664 static int execution_count
;
1666 /* Number of commands that exited with a signal. */
1668 static int signal_count
;
1670 /* Allocate the argument vector. */
1678 /* Clear out the vector of arguments (after a command is executed). */
1683 argbuf
.truncate (0);
1686 /* Add one argument to the vector at the end.
1687 This is done when a space is seen or at the end of the line.
1688 If DELETE_ALWAYS is nonzero, the arg is a filename
1689 and the file should be deleted eventually.
1690 If DELETE_FAILURE is nonzero, the arg is a filename
1691 and the file should be deleted if this compilation fails. */
1694 store_arg (const char *arg
, int delete_always
, int delete_failure
)
1696 argbuf
.safe_push (arg
);
1698 if (strcmp (arg
, "-o") == 0)
1699 have_o_argbuf_index
= argbuf
.length ();
1700 if (delete_always
|| delete_failure
)
1703 /* If the temporary file we should delete is specified as
1704 part of a joined argument extract the filename. */
1706 && (p
= strrchr (arg
, '=')))
1708 record_temp_file (arg
, delete_always
, delete_failure
);
1712 /* Load specs from a file name named FILENAME, replacing occurrences of
1713 various different types of line-endings, \r\n, \n\r and just \r, with
1717 load_specs (const char *filename
)
1721 struct stat statbuf
;
1728 fnotice (stderr
, "Reading specs from %s\n", filename
);
1730 /* Open and stat the file. */
1731 desc
= open (filename
, O_RDONLY
, 0);
1733 pfatal_with_name (filename
);
1734 if (stat (filename
, &statbuf
) < 0)
1735 pfatal_with_name (filename
);
1737 /* Read contents of file into BUFFER. */
1738 buffer
= XNEWVEC (char, statbuf
.st_size
+ 1);
1739 readlen
= read (desc
, buffer
, (unsigned) statbuf
.st_size
);
1741 pfatal_with_name (filename
);
1742 buffer
[readlen
] = 0;
1745 specs
= XNEWVEC (char, readlen
+ 1);
1747 for (buffer_p
= buffer
; buffer_p
&& *buffer_p
; buffer_p
++)
1753 if (buffer_p
> buffer
&& *(buffer_p
- 1) == '\n') /* \n\r */
1755 else if (*(buffer_p
+ 1) == '\n') /* \r\n */
1769 /* Read compilation specs from a file named FILENAME,
1770 replacing the default ones.
1772 A suffix which starts with `*' is a definition for
1773 one of the machine-specific sub-specs. The "suffix" should be
1774 *asm, *cc1, *cpp, *link, *startfile, etc.
1775 The corresponding spec is stored in asm_spec, etc.,
1776 rather than in the `compilers' vector.
1778 Anything invalid in the file is a fatal error. */
1781 read_specs (const char *filename
, bool main_p
, bool user_p
)
1786 buffer
= load_specs (filename
);
1788 /* Scan BUFFER for specs, putting them in the vector. */
1794 char *in
, *out
, *p1
, *p2
, *p3
;
1796 /* Advance P in BUFFER to the next nonblank nocomment line. */
1797 p
= skip_whitespace (p
);
1801 /* Is this a special command that starts with '%'? */
1802 /* Don't allow this for the main specs file, since it would
1803 encourage people to overwrite it. */
1804 if (*p
== '%' && !main_p
)
1807 while (*p
&& *p
!= '\n')
1813 if (!strncmp (p1
, "%include", sizeof ("%include") - 1)
1814 && (p1
[sizeof "%include" - 1] == ' '
1815 || p1
[sizeof "%include" - 1] == '\t'))
1819 p1
+= sizeof ("%include");
1820 while (*p1
== ' ' || *p1
== '\t')
1823 if (*p1
++ != '<' || p
[-2] != '>')
1824 fatal_error ("specs %%include syntax malformed after "
1826 (long) (p1
- buffer
+ 1));
1829 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1830 read_specs (new_filename
? new_filename
: p1
, false, user_p
);
1833 else if (!strncmp (p1
, "%include_noerr", sizeof "%include_noerr" - 1)
1834 && (p1
[sizeof "%include_noerr" - 1] == ' '
1835 || p1
[sizeof "%include_noerr" - 1] == '\t'))
1839 p1
+= sizeof "%include_noerr";
1840 while (*p1
== ' ' || *p1
== '\t')
1843 if (*p1
++ != '<' || p
[-2] != '>')
1844 fatal_error ("specs %%include syntax malformed after "
1846 (long) (p1
- buffer
+ 1));
1849 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1851 read_specs (new_filename
, false, user_p
);
1852 else if (verbose_flag
)
1853 fnotice (stderr
, "could not find specs file %s\n", p1
);
1856 else if (!strncmp (p1
, "%rename", sizeof "%rename" - 1)
1857 && (p1
[sizeof "%rename" - 1] == ' '
1858 || p1
[sizeof "%rename" - 1] == '\t'))
1861 struct spec_list
*sl
;
1862 struct spec_list
*newsl
;
1864 /* Get original name. */
1865 p1
+= sizeof "%rename";
1866 while (*p1
== ' ' || *p1
== '\t')
1869 if (! ISALPHA ((unsigned char) *p1
))
1870 fatal_error ("specs %%rename syntax malformed after "
1872 (long) (p1
- buffer
));
1875 while (*p2
&& !ISSPACE ((unsigned char) *p2
))
1878 if (*p2
!= ' ' && *p2
!= '\t')
1879 fatal_error ("specs %%rename syntax malformed after "
1881 (long) (p2
- buffer
));
1885 while (*p2
== ' ' || *p2
== '\t')
1888 if (! ISALPHA ((unsigned char) *p2
))
1889 fatal_error ("specs %%rename syntax malformed after "
1891 (long) (p2
- buffer
));
1893 /* Get new spec name. */
1895 while (*p3
&& !ISSPACE ((unsigned char) *p3
))
1899 fatal_error ("specs %%rename syntax malformed after "
1901 (long) (p3
- buffer
));
1904 for (sl
= specs
; sl
; sl
= sl
->next
)
1905 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, p1
))
1909 fatal_error ("specs %s spec was not found to be renamed", p1
);
1911 if (strcmp (p1
, p2
) == 0)
1914 for (newsl
= specs
; newsl
; newsl
= newsl
->next
)
1915 if (strcmp (newsl
->name
, p2
) == 0)
1916 fatal_error ("%s: attempt to rename spec %qs to "
1917 "already defined spec %qs",
1922 fnotice (stderr
, "rename spec %s to %s\n", p1
, p2
);
1924 fnotice (stderr
, "spec is '%s'\n\n", *(sl
->ptr_spec
));
1928 set_spec (p2
, *(sl
->ptr_spec
), user_p
);
1930 free (CONST_CAST (char *, *(sl
->ptr_spec
)));
1932 *(sl
->ptr_spec
) = "";
1937 fatal_error ("specs unknown %% command after %ld characters",
1938 (long) (p1
- buffer
));
1941 /* Find the colon that should end the suffix. */
1943 while (*p1
&& *p1
!= ':' && *p1
!= '\n')
1946 /* The colon shouldn't be missing. */
1948 fatal_error ("specs file malformed after %ld characters",
1949 (long) (p1
- buffer
));
1951 /* Skip back over trailing whitespace. */
1953 while (p2
> buffer
&& (p2
[-1] == ' ' || p2
[-1] == '\t'))
1956 /* Copy the suffix to a string. */
1957 suffix
= save_string (p
, p2
- p
);
1958 /* Find the next line. */
1959 p
= skip_whitespace (p1
+ 1);
1961 fatal_error ("specs file malformed after %ld characters",
1962 (long) (p
- buffer
));
1965 /* Find next blank line or end of string. */
1966 while (*p1
&& !(*p1
== '\n' && (p1
[1] == '\n' || p1
[1] == '\0')))
1969 /* Specs end at the blank line and do not include the newline. */
1970 spec
= save_string (p
, p1
- p
);
1973 /* Delete backslash-newline sequences from the spec. */
1978 if (in
[0] == '\\' && in
[1] == '\n')
1980 else if (in
[0] == '#')
1981 while (*in
&& *in
!= '\n')
1989 if (suffix
[0] == '*')
1991 if (! strcmp (suffix
, "*link_command"))
1992 link_command_spec
= spec
;
1994 set_spec (suffix
+ 1, spec
, user_p
);
1998 /* Add this pair to the vector. */
2000 = XRESIZEVEC (struct compiler
, compilers
, n_compilers
+ 2);
2002 compilers
[n_compilers
].suffix
= suffix
;
2003 compilers
[n_compilers
].spec
= spec
;
2005 memset (&compilers
[n_compilers
], 0, sizeof compilers
[n_compilers
]);
2009 link_command_spec
= spec
;
2012 if (link_command_spec
== 0)
2013 fatal_error ("spec file has no spec for linking");
2016 /* Record the names of temporary files we tell compilers to write,
2017 and delete them at the end of the run. */
2019 /* This is the common prefix we use to make temp file names.
2020 It is chosen once for each run of this program.
2021 It is substituted into a spec by %g or %j.
2022 Thus, all temp file names contain this prefix.
2023 In practice, all temp file names start with this prefix.
2025 This prefix comes from the envvar TMPDIR if it is defined;
2026 otherwise, from the P_tmpdir macro if that is defined;
2027 otherwise, in /usr/tmp or /tmp;
2028 or finally the current directory if all else fails. */
2030 static const char *temp_filename
;
2032 /* Length of the prefix. */
2034 static int temp_filename_length
;
2036 /* Define the list of temporary files to delete. */
2041 struct temp_file
*next
;
2044 /* Queue of files to delete on success or failure of compilation. */
2045 static struct temp_file
*always_delete_queue
;
2046 /* Queue of files to delete on failure of compilation. */
2047 static struct temp_file
*failure_delete_queue
;
2049 /* Record FILENAME as a file to be deleted automatically.
2050 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2051 otherwise delete it in any case.
2052 FAIL_DELETE nonzero means delete it if a compilation step fails;
2053 otherwise delete it in any case. */
2056 record_temp_file (const char *filename
, int always_delete
, int fail_delete
)
2058 char *const name
= xstrdup (filename
);
2062 struct temp_file
*temp
;
2063 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
2064 if (! filename_cmp (name
, temp
->name
))
2067 temp
= XNEW (struct temp_file
);
2068 temp
->next
= always_delete_queue
;
2070 always_delete_queue
= temp
;
2077 struct temp_file
*temp
;
2078 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
2079 if (! filename_cmp (name
, temp
->name
))
2085 temp
= XNEW (struct temp_file
);
2086 temp
->next
= failure_delete_queue
;
2088 failure_delete_queue
= temp
;
2094 /* Delete all the temporary files whose names we previously recorded. */
2096 #ifndef DELETE_IF_ORDINARY
2097 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2100 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2101 if (unlink (NAME) < 0) \
2103 perror_with_name (NAME); \
2108 delete_if_ordinary (const char *name
)
2114 printf ("Delete %s? (y or n) ", name
);
2118 while ((c
= getchar ()) != '\n' && c
!= EOF
)
2121 if (i
== 'y' || i
== 'Y')
2123 DELETE_IF_ORDINARY (name
, st
, verbose_flag
);
2127 delete_temp_files (void)
2129 struct temp_file
*temp
;
2131 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
2132 delete_if_ordinary (temp
->name
);
2133 always_delete_queue
= 0;
2136 /* Delete all the files to be deleted on error. */
2139 delete_failure_queue (void)
2141 struct temp_file
*temp
;
2143 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
2144 delete_if_ordinary (temp
->name
);
2148 clear_failure_queue (void)
2150 failure_delete_queue
= 0;
2153 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2155 If DO_MULTI is true iterate over the paths twice, first with multilib
2156 suffix then without, otherwise iterate over the paths once without
2157 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2158 to avoid visiting the same path twice, but we could do better. For
2159 instance, /usr/lib/../lib is considered different from /usr/lib.
2160 At least EXTRA_SPACE chars past the end of the path passed to
2161 CALLBACK are available for use by the callback.
2162 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2164 Returns the value returned by CALLBACK. */
2167 for_each_path (const struct path_prefix
*paths
,
2170 void *(*callback
) (char *, void *),
2171 void *callback_info
)
2173 struct prefix_list
*pl
;
2174 const char *multi_dir
= NULL
;
2175 const char *multi_os_dir
= NULL
;
2176 const char *multiarch_suffix
= NULL
;
2177 const char *multi_suffix
;
2178 const char *just_multi_suffix
;
2181 bool skip_multi_dir
= false;
2182 bool skip_multi_os_dir
= false;
2184 multi_suffix
= machine_suffix
;
2185 just_multi_suffix
= just_machine_suffix
;
2186 if (do_multi
&& multilib_dir
&& strcmp (multilib_dir
, ".") != 0)
2188 multi_dir
= concat (multilib_dir
, dir_separator_str
, NULL
);
2189 multi_suffix
= concat (multi_suffix
, multi_dir
, NULL
);
2190 just_multi_suffix
= concat (just_multi_suffix
, multi_dir
, NULL
);
2192 if (do_multi
&& multilib_os_dir
&& strcmp (multilib_os_dir
, ".") != 0)
2193 multi_os_dir
= concat (multilib_os_dir
, dir_separator_str
, NULL
);
2195 multiarch_suffix
= concat (multiarch_dir
, dir_separator_str
, NULL
);
2199 size_t multi_dir_len
= 0;
2200 size_t multi_os_dir_len
= 0;
2201 size_t multiarch_len
= 0;
2203 size_t just_suffix_len
;
2207 multi_dir_len
= strlen (multi_dir
);
2209 multi_os_dir_len
= strlen (multi_os_dir
);
2210 if (multiarch_suffix
)
2211 multiarch_len
= strlen (multiarch_suffix
);
2212 suffix_len
= strlen (multi_suffix
);
2213 just_suffix_len
= strlen (just_multi_suffix
);
2217 len
= paths
->max_len
+ extra_space
+ 1;
2218 len
+= MAX (MAX (suffix_len
, multi_os_dir_len
), multiarch_len
);
2219 path
= XNEWVEC (char, len
);
2222 for (pl
= paths
->plist
; pl
!= 0; pl
= pl
->next
)
2224 len
= strlen (pl
->prefix
);
2225 memcpy (path
, pl
->prefix
, len
);
2227 /* Look first in MACHINE/VERSION subdirectory. */
2228 if (!skip_multi_dir
)
2230 memcpy (path
+ len
, multi_suffix
, suffix_len
+ 1);
2231 ret
= callback (path
, callback_info
);
2236 /* Some paths are tried with just the machine (ie. target)
2237 subdir. This is used for finding as, ld, etc. */
2239 && pl
->require_machine_suffix
== 2)
2241 memcpy (path
+ len
, just_multi_suffix
, just_suffix_len
+ 1);
2242 ret
= callback (path
, callback_info
);
2247 /* Now try the multiarch path. */
2249 && !pl
->require_machine_suffix
&& multiarch_dir
)
2251 memcpy (path
+ len
, multiarch_suffix
, multiarch_len
+ 1);
2252 ret
= callback (path
, callback_info
);
2257 /* Now try the base path. */
2258 if (!pl
->require_machine_suffix
2259 && !(pl
->os_multilib
? skip_multi_os_dir
: skip_multi_dir
))
2261 const char *this_multi
;
2262 size_t this_multi_len
;
2264 if (pl
->os_multilib
)
2266 this_multi
= multi_os_dir
;
2267 this_multi_len
= multi_os_dir_len
;
2271 this_multi
= multi_dir
;
2272 this_multi_len
= multi_dir_len
;
2276 memcpy (path
+ len
, this_multi
, this_multi_len
+ 1);
2280 ret
= callback (path
, callback_info
);
2288 if (multi_dir
== NULL
&& multi_os_dir
== NULL
)
2291 /* Run through the paths again, this time without multilibs.
2292 Don't repeat any we have already seen. */
2295 free (CONST_CAST (char *, multi_dir
));
2297 free (CONST_CAST (char *, multi_suffix
));
2298 multi_suffix
= machine_suffix
;
2299 free (CONST_CAST (char *, just_multi_suffix
));
2300 just_multi_suffix
= just_machine_suffix
;
2303 skip_multi_dir
= true;
2306 free (CONST_CAST (char *, multi_os_dir
));
2307 multi_os_dir
= NULL
;
2310 skip_multi_os_dir
= true;
2315 free (CONST_CAST (char *, multi_dir
));
2316 free (CONST_CAST (char *, multi_suffix
));
2317 free (CONST_CAST (char *, just_multi_suffix
));
2320 free (CONST_CAST (char *, multi_os_dir
));
2326 /* Callback for build_search_list. Adds path to obstack being built. */
2328 struct add_to_obstack_info
{
2335 add_to_obstack (char *path
, void *data
)
2337 struct add_to_obstack_info
*info
= (struct add_to_obstack_info
*) data
;
2339 if (info
->check_dir
&& !is_directory (path
, false))
2342 if (!info
->first_time
)
2343 obstack_1grow (info
->ob
, PATH_SEPARATOR
);
2345 obstack_grow (info
->ob
, path
, strlen (path
));
2347 info
->first_time
= false;
2351 /* Add or change the value of an environment variable, outputting the
2352 change to standard error if in verbose mode. */
2354 xputenv (const char *string
)
2357 fnotice (stderr
, "%s\n", string
);
2358 putenv (CONST_CAST (char *, string
));
2361 /* Build a list of search directories from PATHS.
2362 PREFIX is a string to prepend to the list.
2363 If CHECK_DIR_P is true we ensure the directory exists.
2364 If DO_MULTI is true, multilib paths are output first, then
2366 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2367 It is also used by the --print-search-dirs flag. */
2370 build_search_list (const struct path_prefix
*paths
, const char *prefix
,
2371 bool check_dir
, bool do_multi
)
2373 struct add_to_obstack_info info
;
2375 info
.ob
= &collect_obstack
;
2376 info
.check_dir
= check_dir
;
2377 info
.first_time
= true;
2379 obstack_grow (&collect_obstack
, prefix
, strlen (prefix
));
2380 obstack_1grow (&collect_obstack
, '=');
2382 for_each_path (paths
, do_multi
, 0, add_to_obstack
, &info
);
2384 obstack_1grow (&collect_obstack
, '\0');
2385 return XOBFINISH (&collect_obstack
, char *);
2388 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2392 putenv_from_prefixes (const struct path_prefix
*paths
, const char *env_var
,
2395 xputenv (build_search_list (paths
, env_var
, true, do_multi
));
2398 /* Check whether NAME can be accessed in MODE. This is like access,
2399 except that it never considers directories to be executable. */
2402 access_check (const char *name
, int mode
)
2408 if (stat (name
, &st
) < 0
2409 || S_ISDIR (st
.st_mode
))
2413 return access (name
, mode
);
2416 /* Callback for find_a_file. Appends the file name to the directory
2417 path. If the resulting file exists in the right mode, return the
2418 full pathname to the file. */
2420 struct file_at_path_info
{
2429 file_at_path (char *path
, void *data
)
2431 struct file_at_path_info
*info
= (struct file_at_path_info
*) data
;
2432 size_t len
= strlen (path
);
2434 memcpy (path
+ len
, info
->name
, info
->name_len
);
2435 len
+= info
->name_len
;
2437 /* Some systems have a suffix for executable files.
2438 So try appending that first. */
2439 if (info
->suffix_len
)
2441 memcpy (path
+ len
, info
->suffix
, info
->suffix_len
+ 1);
2442 if (access_check (path
, info
->mode
) == 0)
2447 if (access_check (path
, info
->mode
) == 0)
2453 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2454 access to check permissions. If DO_MULTI is true, search multilib
2455 paths then non-multilib paths, otherwise do not search multilib paths.
2456 Return 0 if not found, otherwise return its name, allocated with malloc. */
2459 find_a_file (const struct path_prefix
*pprefix
, const char *name
, int mode
,
2462 struct file_at_path_info info
;
2464 #ifdef DEFAULT_ASSEMBLER
2465 if (! strcmp (name
, "as") && access (DEFAULT_ASSEMBLER
, mode
) == 0)
2466 return xstrdup (DEFAULT_ASSEMBLER
);
2469 #ifdef DEFAULT_LINKER
2470 if (! strcmp (name
, "ld") && access (DEFAULT_LINKER
, mode
) == 0)
2471 return xstrdup (DEFAULT_LINKER
);
2474 /* Determine the filename to execute (special case for absolute paths). */
2476 if (IS_ABSOLUTE_PATH (name
))
2478 if (access (name
, mode
) == 0)
2479 return xstrdup (name
);
2485 info
.suffix
= (mode
& X_OK
) != 0 ? HOST_EXECUTABLE_SUFFIX
: "";
2486 info
.name_len
= strlen (info
.name
);
2487 info
.suffix_len
= strlen (info
.suffix
);
2490 return (char*) for_each_path (pprefix
, do_multi
,
2491 info
.name_len
+ info
.suffix_len
,
2492 file_at_path
, &info
);
2495 /* Ranking of prefixes in the sort list. -B prefixes are put before
2498 enum path_prefix_priority
2500 PREFIX_PRIORITY_B_OPT
,
2501 PREFIX_PRIORITY_LAST
2504 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2505 order according to PRIORITY. Within each PRIORITY, new entries are
2508 If WARN is nonzero, we will warn if no file is found
2509 through this prefix. WARN should point to an int
2510 which will be set to 1 if this entry is used.
2512 COMPONENT is the value to be passed to update_path.
2514 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2515 the complete value of machine_suffix.
2516 2 means try both machine_suffix and just_machine_suffix. */
2519 add_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2520 const char *component
, /* enum prefix_priority */ int priority
,
2521 int require_machine_suffix
, int os_multilib
)
2523 struct prefix_list
*pl
, **prev
;
2526 for (prev
= &pprefix
->plist
;
2527 (*prev
) != NULL
&& (*prev
)->priority
<= priority
;
2528 prev
= &(*prev
)->next
)
2531 /* Keep track of the longest prefix. */
2533 prefix
= update_path (prefix
, component
);
2534 len
= strlen (prefix
);
2535 if (len
> pprefix
->max_len
)
2536 pprefix
->max_len
= len
;
2538 pl
= XNEW (struct prefix_list
);
2539 pl
->prefix
= prefix
;
2540 pl
->require_machine_suffix
= require_machine_suffix
;
2541 pl
->priority
= priority
;
2542 pl
->os_multilib
= os_multilib
;
2544 /* Insert after PREV. */
2549 /* Same as add_prefix, but prepending target_system_root to prefix. */
2550 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2552 add_sysrooted_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2553 const char *component
,
2554 /* enum prefix_priority */ int priority
,
2555 int require_machine_suffix
, int os_multilib
)
2557 if (!IS_ABSOLUTE_PATH (prefix
))
2558 fatal_error ("system path %qs is not absolute", prefix
);
2560 if (target_system_root
)
2562 char *sysroot_no_trailing_dir_separator
= xstrdup (target_system_root
);
2563 size_t sysroot_len
= strlen (target_system_root
);
2566 && target_system_root
[sysroot_len
- 1] == DIR_SEPARATOR
)
2567 sysroot_no_trailing_dir_separator
[sysroot_len
- 1] = '\0';
2569 if (target_sysroot_suffix
)
2570 prefix
= concat (sysroot_no_trailing_dir_separator
,
2571 target_sysroot_suffix
, prefix
, NULL
);
2573 prefix
= concat (sysroot_no_trailing_dir_separator
, prefix
, NULL
);
2575 free (sysroot_no_trailing_dir_separator
);
2577 /* We have to override this because GCC's notion of sysroot
2578 moves along with GCC. */
2582 add_prefix (pprefix
, prefix
, component
, priority
,
2583 require_machine_suffix
, os_multilib
);
2586 /* Execute the command specified by the arguments on the current line of spec.
2587 When using pipes, this includes several piped-together commands
2588 with `|' between them.
2590 Return 0 if successful, -1 if failed. */
2596 int n_commands
; /* # of command. */
2598 struct pex_obj
*pex
;
2601 const char *prog
; /* program name. */
2602 const char **argv
; /* vector of args. */
2606 struct command
*commands
; /* each command buffer with above info. */
2608 gcc_assert (!processing_spec_function
);
2612 string
= find_a_file (&exec_prefixes
,
2613 argbuf
[0], X_OK
, false);
2616 insert_wrapper (wrapper_string
);
2619 /* Count # of piped commands. */
2620 for (n_commands
= 1, i
= 0; argbuf
.iterate (i
, &arg
); i
++)
2621 if (strcmp (arg
, "|") == 0)
2624 /* Get storage for each command. */
2625 commands
= (struct command
*) alloca (n_commands
* sizeof (struct command
));
2627 /* Split argbuf into its separate piped processes,
2628 and record info about each one.
2629 Also search for the programs that are to be run. */
2631 argbuf
.safe_push (0);
2633 commands
[0].prog
= argbuf
[0]; /* first command. */
2634 commands
[0].argv
= argbuf
.address ();
2636 if (!wrapper_string
)
2638 string
= find_a_file (&exec_prefixes
, commands
[0].prog
, X_OK
, false);
2639 commands
[0].argv
[0] = (string
) ? string
: commands
[0].argv
[0];
2642 for (n_commands
= 1, i
= 0; argbuf
.iterate (i
, &arg
); i
++)
2643 if (arg
&& strcmp (arg
, "|") == 0)
2644 { /* each command. */
2645 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2646 fatal_error ("-pipe not supported");
2648 argbuf
[i
] = 0; /* Termination of
2650 commands
[n_commands
].prog
= argbuf
[i
+ 1];
2651 commands
[n_commands
].argv
2652 = &(argbuf
.address ())[i
+ 1];
2653 string
= find_a_file (&exec_prefixes
, commands
[n_commands
].prog
,
2656 commands
[n_commands
].argv
[0] = string
;
2660 /* If -v, print what we are about to do, and maybe query. */
2664 /* For help listings, put a blank line between sub-processes. */
2665 if (print_help_list
)
2666 fputc ('\n', stderr
);
2668 /* Print each piped command as a separate line. */
2669 for (i
= 0; i
< n_commands
; i
++)
2671 const char *const *j
;
2673 if (verbose_only_flag
)
2675 for (j
= commands
[i
].argv
; *j
; j
++)
2678 for (p
= *j
; *p
; ++p
)
2679 if (!ISALNUM ((unsigned char) *p
)
2680 && *p
!= '_' && *p
!= '/' && *p
!= '-' && *p
!= '.')
2684 fprintf (stderr
, " \"");
2685 for (p
= *j
; *p
; ++p
)
2687 if (*p
== '"' || *p
== '\\' || *p
== '$')
2688 fputc ('\\', stderr
);
2691 fputc ('"', stderr
);
2693 /* If it's empty, print "". */
2695 fprintf (stderr
, " \"\"");
2697 fprintf (stderr
, " %s", *j
);
2701 for (j
= commands
[i
].argv
; *j
; j
++)
2702 /* If it's empty, print "". */
2704 fprintf (stderr
, " \"\"");
2706 fprintf (stderr
, " %s", *j
);
2708 /* Print a pipe symbol after all but the last command. */
2709 if (i
+ 1 != n_commands
)
2710 fprintf (stderr
, " |");
2711 fprintf (stderr
, "\n");
2714 if (verbose_only_flag
!= 0)
2716 /* verbose_only_flag should act as if the spec was
2717 executed, so increment execution_count before
2718 returning. This prevents spurious warnings about
2719 unused linker input files, etc. */
2724 fnotice (stderr
, "\nGo ahead? (y or n) ");
2728 while (getchar () != '\n')
2731 if (i
!= 'y' && i
!= 'Y')
2736 #ifdef ENABLE_VALGRIND_CHECKING
2737 /* Run the each command through valgrind. To simplify prepending the
2738 path to valgrind and the option "-q" (for quiet operation unless
2739 something triggers), we allocate a separate argv array. */
2741 for (i
= 0; i
< n_commands
; i
++)
2747 for (argc
= 0; commands
[i
].argv
[argc
] != NULL
; argc
++)
2750 argv
= XALLOCAVEC (const char *, argc
+ 3);
2752 argv
[0] = VALGRIND_PATH
;
2754 for (j
= 2; j
< argc
+ 2; j
++)
2755 argv
[j
] = commands
[i
].argv
[j
- 2];
2758 commands
[i
].argv
= argv
;
2759 commands
[i
].prog
= argv
[0];
2763 /* Run each piped subprocess. */
2765 pex
= pex_init (PEX_USE_PIPES
| ((report_times
|| report_times_to_file
)
2766 ? PEX_RECORD_TIMES
: 0),
2767 progname
, temp_filename
);
2769 fatal_error ("pex_init failed: %m");
2771 for (i
= 0; i
< n_commands
; i
++)
2775 const char *string
= commands
[i
].argv
[0];
2777 errmsg
= pex_run (pex
,
2778 ((i
+ 1 == n_commands
? PEX_LAST
: 0)
2779 | (string
== commands
[i
].prog
? PEX_SEARCH
: 0)),
2780 string
, CONST_CAST (char **, commands
[i
].argv
),
2785 fatal_error (errmsg
);
2789 pfatal_with_name (errmsg
);
2793 if (string
!= commands
[i
].prog
)
2794 free (CONST_CAST (char *, string
));
2799 /* Wait for all the subprocesses to finish. */
2803 struct pex_time
*times
= NULL
;
2806 statuses
= (int *) alloca (n_commands
* sizeof (int));
2807 if (!pex_get_status (pex
, n_commands
, statuses
))
2808 fatal_error ("failed to get exit status: %m");
2810 if (report_times
|| report_times_to_file
)
2812 times
= (struct pex_time
*) alloca (n_commands
* sizeof (struct pex_time
));
2813 if (!pex_get_times (pex
, n_commands
, times
))
2814 fatal_error ("failed to get process times: %m");
2819 for (i
= 0; i
< n_commands
; ++i
)
2821 int status
= statuses
[i
];
2823 if (WIFSIGNALED (status
))
2826 /* SIGPIPE is a special case. It happens in -pipe mode
2827 when the compiler dies before the preprocessor is done,
2828 or the assembler dies before the compiler is done.
2829 There's generally been an error already, and this is
2830 just fallout. So don't generate another error unless
2831 we would otherwise have succeeded. */
2832 if (WTERMSIG (status
) == SIGPIPE
2833 && (signal_count
|| greatest_status
>= MIN_FATAL_STATUS
))
2840 internal_error ("%s (program %s)",
2841 strsignal (WTERMSIG (status
)), commands
[i
].prog
);
2843 else if (WIFEXITED (status
)
2844 && WEXITSTATUS (status
) >= MIN_FATAL_STATUS
)
2846 if (WEXITSTATUS (status
) > greatest_status
)
2847 greatest_status
= WEXITSTATUS (status
);
2851 if (report_times
|| report_times_to_file
)
2853 struct pex_time
*pt
= ×
[i
];
2856 ut
= ((double) pt
->user_seconds
2857 + (double) pt
->user_microseconds
/ 1.0e6
);
2858 st
= ((double) pt
->system_seconds
2859 + (double) pt
->system_microseconds
/ 1.0e6
);
2864 fnotice (stderr
, "# %s %.2f %.2f\n",
2865 commands
[i
].prog
, ut
, st
);
2867 if (report_times_to_file
)
2870 const char *const *j
;
2872 fprintf (report_times_to_file
, "%g %g", ut
, st
);
2874 for (j
= &commands
[i
].prog
; *j
; j
= &commands
[i
].argv
[++c
])
2877 for (p
= *j
; *p
; ++p
)
2878 if (*p
== '"' || *p
== '\\' || *p
== '$'
2884 fprintf (report_times_to_file
, " \"");
2885 for (p
= *j
; *p
; ++p
)
2887 if (*p
== '"' || *p
== '\\' || *p
== '$')
2888 fputc ('\\', report_times_to_file
);
2889 fputc (*p
, report_times_to_file
);
2891 fputc ('"', report_times_to_file
);
2894 fprintf (report_times_to_file
, " %s", *j
);
2897 fputc ('\n', report_times_to_file
);
2907 /* Find all the switches given to us
2908 and make a vector describing them.
2909 The elements of the vector are strings, one per switch given.
2910 If a switch uses following arguments, then the `part1' field
2911 is the switch itself and the `args' field
2912 is a null-terminated vector containing the following arguments.
2913 Bits in the `live_cond' field are:
2914 SWITCH_LIVE to indicate this switch is true in a conditional spec.
2915 SWITCH_FALSE to indicate this switch is overridden by a later switch.
2916 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
2917 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
2918 in all do_spec calls afterwards. Used for %<S from self specs.
2919 The `validated' field is nonzero if any spec has looked at this switch;
2920 if it remains zero at the end of the run, it must be meaningless. */
2922 #define SWITCH_LIVE (1 << 0)
2923 #define SWITCH_FALSE (1 << 1)
2924 #define SWITCH_IGNORE (1 << 2)
2925 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
2926 #define SWITCH_KEEP_FOR_GCC (1 << 4)
2932 unsigned int live_cond
;
2938 static struct switchstr
*switches
;
2940 static int n_switches
;
2942 static int n_switches_alloc
;
2944 /* Set to zero if -fcompare-debug is disabled, positive if it's
2945 enabled and we're running the first compilation, negative if it's
2946 enabled and we're running the second compilation. For most of the
2947 time, it's in the range -1..1, but it can be temporarily set to 2
2948 or 3 to indicate that the -fcompare-debug flags didn't come from
2949 the command-line, but rather from the GCC_COMPARE_DEBUG environment
2950 variable, until a synthesized -fcompare-debug flag is added to the
2954 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
2955 int compare_debug_second
;
2957 /* Set to the flags that should be passed to the second compilation in
2958 a -fcompare-debug compilation. */
2959 const char *compare_debug_opt
;
2961 static struct switchstr
*switches_debug_check
[2];
2963 static int n_switches_debug_check
[2];
2965 static int n_switches_alloc_debug_check
[2];
2967 static char *debug_check_temp_file
[2];
2969 /* Language is one of three things:
2971 1) The name of a real programming language.
2972 2) NULL, indicating that no one has figured out
2974 3) '*', indicating that the file should be passed
2979 const char *language
;
2980 struct compiler
*incompiler
;
2985 /* Also a vector of input files specified. */
2987 static struct infile
*infiles
;
2991 static int n_infiles_alloc
;
2993 /* True if multiple input files are being compiled to a single
2996 static bool combine_inputs
;
2998 /* This counts the number of libraries added by lang_specific_driver, so that
2999 we can tell if there were any user supplied any files or libraries. */
3001 static int added_libraries
;
3003 /* And a vector of corresponding output files is made up later. */
3005 const char **outfiles
;
3007 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3009 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
3010 is true if we should look for an executable suffix. DO_OBJ
3011 is true if we should look for an object suffix. */
3014 convert_filename (const char *name
, int do_exe ATTRIBUTE_UNUSED
,
3015 int do_obj ATTRIBUTE_UNUSED
)
3017 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3025 len
= strlen (name
);
3027 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3028 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
3029 if (do_obj
&& len
> 2
3030 && name
[len
- 2] == '.'
3031 && name
[len
- 1] == 'o')
3033 obstack_grow (&obstack
, name
, len
- 2);
3034 obstack_grow0 (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
3035 name
= XOBFINISH (&obstack
, const char *);
3039 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3040 /* If there is no filetype, make it the executable suffix (which includes
3041 the "."). But don't get confused if we have just "-o". */
3042 if (! do_exe
|| TARGET_EXECUTABLE_SUFFIX
[0] == 0 || (len
== 2 && name
[0] == '-'))
3045 for (i
= len
- 1; i
>= 0; i
--)
3046 if (IS_DIR_SEPARATOR (name
[i
]))
3049 for (i
++; i
< len
; i
++)
3053 obstack_grow (&obstack
, name
, len
);
3054 obstack_grow0 (&obstack
, TARGET_EXECUTABLE_SUFFIX
,
3055 strlen (TARGET_EXECUTABLE_SUFFIX
));
3056 name
= XOBFINISH (&obstack
, const char *);
3063 /* Display the command line switches accepted by gcc. */
3067 printf (_("Usage: %s [options] file...\n"), progname
);
3068 fputs (_("Options:\n"), stdout
);
3070 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout
);
3071 fputs (_(" --help Display this information\n"), stdout
);
3072 fputs (_(" --target-help Display target specific command line options\n"), stdout
);
3073 fputs (_(" --help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumented}}[,...]\n"), stdout
);
3074 fputs (_(" Display specific types of command line options\n"), stdout
);
3076 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout
);
3077 fputs (_(" --version Display compiler version information\n"), stdout
);
3078 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout
);
3079 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout
);
3080 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout
);
3081 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout
);
3082 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout
);
3083 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout
);
3084 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout
);
3086 -print-multiarch Display the target's normalized GNU triplet, used as\n\
3087 a component in the library path\n"), stdout
);
3088 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout
);
3090 -print-multi-lib Display the mapping between command line options and\n\
3091 multiple library search directories\n"), stdout
);
3092 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout
);
3093 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout
);
3094 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout
);
3095 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout
);
3096 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout
);
3097 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout
);
3098 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout
);
3099 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout
);
3100 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout
);
3101 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout
);
3102 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout
);
3104 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
3105 prefixes to other gcc components\n"), stdout
);
3106 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout
);
3107 fputs (_(" -time Time the execution of each subprocess\n"), stdout
);
3108 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout
);
3109 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout
);
3111 --sysroot=<directory> Use <directory> as the root directory for headers\n\
3112 and libraries\n"), stdout
);
3113 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout
);
3114 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout
);
3115 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout
);
3116 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout
);
3117 fputs (_(" -S Compile only; do not assemble or link\n"), stdout
);
3118 fputs (_(" -c Compile and assemble, but do not link\n"), stdout
);
3119 fputs (_(" -o <file> Place the output into <file>\n"), stdout
);
3120 fputs (_(" -pie Create a position independent executable\n"), stdout
);
3121 fputs (_(" -shared Create a shared library\n"), stdout
);
3123 -x <language> Specify the language of the following input files\n\
3124 Permissible languages include: c c++ assembler none\n\
3125 'none' means revert to the default behavior of\n\
3126 guessing the language based on the file's extension\n\
3130 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3131 passed on to the various sub-processes invoked by %s. In order to pass\n\
3132 other options on to these processes the -W<letter> options must be used.\n\
3135 /* The rest of the options are displayed by invocations of the various
3140 add_preprocessor_option (const char *option
, int len
)
3142 preprocessor_options
.safe_push (save_string (option
, len
));
3146 add_assembler_option (const char *option
, int len
)
3148 assembler_options
.safe_push (save_string (option
, len
));
3152 add_linker_option (const char *option
, int len
)
3154 linker_options
.safe_push (save_string (option
, len
));
3157 /* Allocate space for an input file in infiles. */
3162 if (n_infiles_alloc
== 0)
3164 n_infiles_alloc
= 16;
3165 infiles
= XNEWVEC (struct infile
, n_infiles_alloc
);
3167 else if (n_infiles_alloc
== n_infiles
)
3169 n_infiles_alloc
*= 2;
3170 infiles
= XRESIZEVEC (struct infile
, infiles
, n_infiles_alloc
);
3174 /* Store an input file with the given NAME and LANGUAGE in
3178 add_infile (const char *name
, const char *language
)
3181 infiles
[n_infiles
].name
= name
;
3182 infiles
[n_infiles
++].language
= language
;
3185 /* Allocate space for a switch in switches. */
3190 if (n_switches_alloc
== 0)
3192 n_switches_alloc
= 16;
3193 switches
= XNEWVEC (struct switchstr
, n_switches_alloc
);
3195 else if (n_switches_alloc
== n_switches
)
3197 n_switches_alloc
*= 2;
3198 switches
= XRESIZEVEC (struct switchstr
, switches
, n_switches_alloc
);
3202 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3203 as validated if VALIDATED and KNOWN if it is an internal switch. */
3206 save_switch (const char *opt
, size_t n_args
, const char *const *args
,
3207 bool validated
, bool known
)
3210 switches
[n_switches
].part1
= opt
+ 1;
3212 switches
[n_switches
].args
= 0;
3215 switches
[n_switches
].args
= XNEWVEC (const char *, n_args
+ 1);
3216 memcpy (switches
[n_switches
].args
, args
, n_args
* sizeof (const char *));
3217 switches
[n_switches
].args
[n_args
] = NULL
;
3220 switches
[n_switches
].live_cond
= 0;
3221 switches
[n_switches
].validated
= validated
;
3222 switches
[n_switches
].known
= known
;
3223 switches
[n_switches
].ordering
= 0;
3227 /* Handle an option DECODED that is unknown to the option-processing
3231 driver_unknown_option_callback (const struct cl_decoded_option
*decoded
)
3233 const char *opt
= decoded
->arg
;
3234 if (opt
[1] == 'W' && opt
[2] == 'n' && opt
[3] == 'o' && opt
[4] == '-'
3235 && !(decoded
->errors
& CL_ERR_NEGATIVE
))
3237 /* Leave unknown -Wno-* options for the compiler proper, to be
3238 diagnosed only if there are warnings. */
3239 save_switch (decoded
->canonical_option
[0],
3240 decoded
->canonical_option_num_elements
- 1,
3241 &decoded
->canonical_option
[1], false, true);
3244 if (decoded
->opt_index
== OPT_SPECIAL_unknown
)
3246 /* Give it a chance to define it a a spec file. */
3247 save_switch (decoded
->canonical_option
[0],
3248 decoded
->canonical_option_num_elements
- 1,
3249 &decoded
->canonical_option
[1], false, false);
3256 /* Handle an option DECODED that is not marked as CL_DRIVER.
3257 LANG_MASK will always be CL_DRIVER. */
3260 driver_wrong_lang_callback (const struct cl_decoded_option
*decoded
,
3261 unsigned int lang_mask ATTRIBUTE_UNUSED
)
3263 /* At this point, non-driver options are accepted (and expected to
3264 be passed down by specs) unless marked to be rejected by the
3265 driver. Options to be rejected by the driver but accepted by the
3266 compilers proper are treated just like completely unknown
3268 const struct cl_option
*option
= &cl_options
[decoded
->opt_index
];
3270 if (option
->cl_reject_driver
)
3271 error ("unrecognized command line option %qs",
3272 decoded
->orig_option_with_args_text
);
3274 save_switch (decoded
->canonical_option
[0],
3275 decoded
->canonical_option_num_elements
- 1,
3276 &decoded
->canonical_option
[1], false, true);
3279 static const char *spec_lang
= 0;
3280 static int last_language_n_infiles
;
3282 /* Handle a driver option; arguments and return value as for
3286 driver_handle_option (struct gcc_options
*opts
,
3287 struct gcc_options
*opts_set
,
3288 const struct cl_decoded_option
*decoded
,
3289 unsigned int lang_mask ATTRIBUTE_UNUSED
, int kind
,
3291 const struct cl_option_handlers
*handlers ATTRIBUTE_UNUSED
,
3292 diagnostic_context
*dc
)
3294 size_t opt_index
= decoded
->opt_index
;
3295 const char *arg
= decoded
->arg
;
3296 const char *compare_debug_replacement_opt
;
3297 int value
= decoded
->value
;
3298 bool validated
= false;
3299 bool do_save
= true;
3301 gcc_assert (opts
== &global_options
);
3302 gcc_assert (opts_set
== &global_options_set
);
3303 gcc_assert (kind
== DK_UNSPECIFIED
);
3304 gcc_assert (loc
== UNKNOWN_LOCATION
);
3305 gcc_assert (dc
== global_dc
);
3311 struct spec_list
*sl
;
3313 for (sl
= specs
; sl
; sl
= sl
->next
)
3314 printf ("*%s:\n%s\n\n", sl
->name
, *(sl
->ptr_spec
));
3315 if (link_command_spec
)
3316 printf ("*link_command:\n%s\n\n", link_command_spec
);
3320 case OPT_dumpversion
:
3321 printf ("%s\n", spec_version
);
3324 case OPT_dumpmachine
:
3325 printf ("%s\n", spec_machine
);
3331 /* CPP driver cannot obtain switch from cc1_options. */
3333 add_preprocessor_option ("--version", strlen ("--version"));
3334 add_assembler_option ("--version", strlen ("--version"));
3335 add_linker_option ("--version", strlen ("--version"));
3339 print_help_list
= 1;
3341 /* CPP driver cannot obtain switch from cc1_options. */
3343 add_preprocessor_option ("--help", 6);
3344 add_assembler_option ("--help", 6);
3345 add_linker_option ("--help", 6);
3349 print_subprocess_help
= 2;
3352 case OPT__target_help
:
3353 print_subprocess_help
= 1;
3355 /* CPP driver cannot obtain switch from cc1_options. */
3357 add_preprocessor_option ("--target-help", 13);
3358 add_assembler_option ("--target-help", 13);
3359 add_linker_option ("--target-help", 13);
3362 case OPT__no_sysroot_suffix
:
3363 case OPT_pass_exit_codes
:
3364 case OPT_print_search_dirs
:
3365 case OPT_print_file_name_
:
3366 case OPT_print_prog_name_
:
3367 case OPT_print_multi_lib
:
3368 case OPT_print_multi_directory
:
3369 case OPT_print_sysroot
:
3370 case OPT_print_multi_os_directory
:
3371 case OPT_print_multiarch
:
3372 case OPT_print_sysroot_headers_suffix
:
3375 /* These options set the variables specified in common.opt
3376 automatically, and do not need to be saved for spec
3381 case OPT_print_libgcc_file_name
:
3382 print_file_name
= "libgcc.a";
3386 case OPT_fuse_ld_bfd
:
3390 case OPT_fuse_ld_gold
:
3394 case OPT_fcompare_debug_second
:
3395 compare_debug_second
= 1;
3398 case OPT_fcompare_debug
:
3402 compare_debug_replacement_opt
= "-fcompare-debug=";
3404 goto compare_debug_with_arg
;
3407 compare_debug_replacement_opt
= "-fcompare-debug=-gtoggle";
3409 goto compare_debug_with_arg
;
3416 case OPT_fcompare_debug_
:
3417 compare_debug_replacement_opt
= decoded
->canonical_option
[0];
3418 compare_debug_with_arg
:
3419 gcc_assert (decoded
->canonical_option_num_elements
== 1);
3420 gcc_assert (arg
!= NULL
);
3425 if (compare_debug
< 0)
3426 compare_debug_opt
= NULL
;
3428 compare_debug_opt
= arg
;
3429 save_switch (compare_debug_replacement_opt
, 0, NULL
, validated
, true);
3435 /* Pass the rest of this option to the assembler. */
3437 /* Split the argument at commas. */
3439 for (j
= 0; arg
[j
]; j
++)
3442 add_assembler_option (arg
+ prev
, j
- prev
);
3446 /* Record the part after the last comma. */
3447 add_assembler_option (arg
+ prev
, j
- prev
);
3455 /* Pass the rest of this option to the preprocessor. */
3457 /* Split the argument at commas. */
3459 for (j
= 0; arg
[j
]; j
++)
3462 add_preprocessor_option (arg
+ prev
, j
- prev
);
3466 /* Record the part after the last comma. */
3467 add_preprocessor_option (arg
+ prev
, j
- prev
);
3475 /* Split the argument at commas. */
3477 for (j
= 0; arg
[j
]; j
++)
3480 add_infile (save_string (arg
+ prev
, j
- prev
), "*");
3483 /* Record the part after the last comma. */
3484 add_infile (arg
+ prev
, "*");
3490 add_infile (arg
, "*");
3494 case OPT_Xpreprocessor
:
3495 add_preprocessor_option (arg
, strlen (arg
));
3499 case OPT_Xassembler
:
3500 add_assembler_option (arg
, strlen (arg
));
3505 /* POSIX allows separation of -l and the lib arg; canonicalize
3506 by concatenating -l with its arg */
3507 add_infile (concat ("-l", arg
, NULL
), "*");
3512 /* Similarly, canonicalize -L for linkers that may not accept
3513 separate arguments. */
3514 save_switch (concat ("-L", arg
, NULL
), 0, NULL
, validated
, true);
3519 save_switch (concat ("-F", arg
, NULL
), 0, NULL
, validated
, true);
3522 case OPT_save_temps
:
3523 save_temps_flag
= SAVE_TEMPS_CWD
;
3527 case OPT_save_temps_
:
3528 if (strcmp (arg
, "cwd") == 0)
3529 save_temps_flag
= SAVE_TEMPS_CWD
;
3530 else if (strcmp (arg
, "obj") == 0
3531 || strcmp (arg
, "object") == 0)
3532 save_temps_flag
= SAVE_TEMPS_OBJ
;
3534 fatal_error ("%qs is an unknown -save-temps option",
3535 decoded
->orig_option_with_args_text
);
3538 case OPT_no_canonical_prefixes
:
3539 /* Already handled as a special case, so ignored here. */
3545 /* These options set the variables specified in common.opt
3546 automatically, but do need to be saved for spec
3552 struct user_specs
*user
= XNEW (struct user_specs
);
3554 user
->next
= (struct user_specs
*) 0;
3555 user
->filename
= arg
;
3556 if (user_specs_tail
)
3557 user_specs_tail
->next
= user
;
3559 user_specs_head
= user
;
3560 user_specs_tail
= user
;
3566 target_system_root
= arg
;
3567 target_system_root_changed
= 1;
3572 if (report_times_to_file
)
3573 fclose (report_times_to_file
);
3574 report_times_to_file
= fopen (arg
, "a");
3580 This is similar to -v except that there is no execution
3581 of the commands and the echoed arguments are quoted. It
3582 is intended for use in shell scripts to capture the
3583 driver-generated command line. */
3584 verbose_only_flag
++;
3591 size_t len
= strlen (arg
);
3593 /* Catch the case where the user has forgotten to append a
3594 directory separator to the path. Note, they may be using
3595 -B to add an executable name prefix, eg "i386-elf-", in
3596 order to distinguish between multiple installations of
3597 GCC in the same directory. Hence we must check to see
3598 if appending a directory separator actually makes a
3599 valid directory name. */
3600 if (!IS_DIR_SEPARATOR (arg
[len
- 1])
3601 && is_directory (arg
, false))
3603 char *tmp
= XNEWVEC (char, len
+ 2);
3605 tmp
[len
] = DIR_SEPARATOR
;
3610 add_prefix (&exec_prefixes
, arg
, NULL
,
3611 PREFIX_PRIORITY_B_OPT
, 0, 0);
3612 add_prefix (&startfile_prefixes
, arg
, NULL
,
3613 PREFIX_PRIORITY_B_OPT
, 0, 0);
3614 add_prefix (&include_prefixes
, arg
, NULL
,
3615 PREFIX_PRIORITY_B_OPT
, 0, 0);
3622 if (!strcmp (spec_lang
, "none"))
3623 /* Suppress the warning if -xnone comes after the last input
3624 file, because alternate command interfaces like g++ might
3625 find it useful to place -xnone after each input file. */
3628 last_language_n_infiles
= n_infiles
;
3634 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3635 arg
= convert_filename (arg
, ! have_c
, 0);
3637 /* Save the output name in case -save-temps=obj was used. */
3638 save_temps_prefix
= xstrdup (arg
);
3639 /* On some systems, ld cannot handle "-o" without a space. So
3640 split the option from its argument. */
3641 save_switch ("-o", 1, &arg
, validated
, true);
3644 case OPT_static_libgcc
:
3645 case OPT_shared_libgcc
:
3646 case OPT_static_libgfortran
:
3647 case OPT_static_libstdc__
:
3648 /* These are always valid, since gcc.c itself understands the
3649 first two, gfortranspec.c understands -static-libgfortran and
3650 g++spec.c understands -static-libstdc++ */
3659 /* Various driver options need no special processing at this
3660 point, having been handled in a prescan above or being
3661 handled by specs. */
3666 save_switch (decoded
->canonical_option
[0],
3667 decoded
->canonical_option_num_elements
- 1,
3668 &decoded
->canonical_option
[1], validated
, true);
3672 /* Put the driver's standard set of option handlers in *HANDLERS. */
3675 set_option_handlers (struct cl_option_handlers
*handlers
)
3677 handlers
->unknown_option_callback
= driver_unknown_option_callback
;
3678 handlers
->wrong_lang_callback
= driver_wrong_lang_callback
;
3679 handlers
->num_handlers
= 3;
3680 handlers
->handlers
[0].handler
= driver_handle_option
;
3681 handlers
->handlers
[0].mask
= CL_DRIVER
;
3682 handlers
->handlers
[1].handler
= common_handle_option
;
3683 handlers
->handlers
[1].mask
= CL_COMMON
;
3684 handlers
->handlers
[2].handler
= target_handle_option
;
3685 handlers
->handlers
[2].mask
= CL_TARGET
;
3688 /* Create the vector `switches' and its contents.
3689 Store its length in `n_switches'. */
3692 process_command (unsigned int decoded_options_count
,
3693 struct cl_decoded_option
*decoded_options
)
3697 char *tooldir_prefix
, *tooldir_prefix2
;
3698 char *(*get_relative_prefix
) (const char *, const char *,
3699 const char *) = NULL
;
3700 struct cl_option_handlers handlers
;
3703 gcc_exec_prefix
= getenv ("GCC_EXEC_PREFIX");
3707 added_libraries
= 0;
3709 /* Figure compiler version from version string. */
3711 compiler_version
= temp1
= xstrdup (version_string
);
3713 for (; *temp1
; ++temp1
)
3722 /* Handle any -no-canonical-prefixes flag early, to assign the function
3723 that builds relative prefixes. This function creates default search
3724 paths that are needed later in normal option handling. */
3726 for (j
= 1; j
< decoded_options_count
; j
++)
3728 if (decoded_options
[j
].opt_index
== OPT_no_canonical_prefixes
)
3730 get_relative_prefix
= make_relative_prefix_ignore_links
;
3734 if (! get_relative_prefix
)
3735 get_relative_prefix
= make_relative_prefix
;
3737 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3738 see if we can create it from the pathname specified in
3739 decoded_options[0].arg. */
3741 gcc_libexec_prefix
= standard_libexec_prefix
;
3743 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3744 if (!gcc_exec_prefix
)
3746 gcc_exec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3747 standard_bindir_prefix
,
3748 standard_exec_prefix
);
3749 gcc_libexec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3750 standard_bindir_prefix
,
3751 standard_libexec_prefix
);
3752 if (gcc_exec_prefix
)
3753 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix
, NULL
));
3757 /* make_relative_prefix requires a program name, but
3758 GCC_EXEC_PREFIX is typically a directory name with a trailing
3759 / (which is ignored by make_relative_prefix), so append a
3761 char *tmp_prefix
= concat (gcc_exec_prefix
, "gcc", NULL
);
3762 gcc_libexec_prefix
= get_relative_prefix (tmp_prefix
,
3763 standard_exec_prefix
,
3764 standard_libexec_prefix
);
3766 /* The path is unrelocated, so fallback to the original setting. */
3767 if (!gcc_libexec_prefix
)
3768 gcc_libexec_prefix
= standard_libexec_prefix
;
3774 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3775 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3776 or an automatically created GCC_EXEC_PREFIX from
3777 decoded_options[0].arg. */
3779 /* Do language-specific adjustment/addition of flags. */
3780 lang_specific_driver (&decoded_options
, &decoded_options_count
,
3783 if (gcc_exec_prefix
)
3785 int len
= strlen (gcc_exec_prefix
);
3787 if (len
> (int) sizeof ("/lib/gcc/") - 1
3788 && (IS_DIR_SEPARATOR (gcc_exec_prefix
[len
-1])))
3790 temp
= gcc_exec_prefix
+ len
- sizeof ("/lib/gcc/") + 1;
3791 if (IS_DIR_SEPARATOR (*temp
)
3792 && filename_ncmp (temp
+ 1, "lib", 3) == 0
3793 && IS_DIR_SEPARATOR (temp
[4])
3794 && filename_ncmp (temp
+ 5, "gcc", 3) == 0)
3795 len
-= sizeof ("/lib/gcc/") - 1;
3798 set_std_prefix (gcc_exec_prefix
, len
);
3799 add_prefix (&exec_prefixes
, gcc_libexec_prefix
, "GCC",
3800 PREFIX_PRIORITY_LAST
, 0, 0);
3801 add_prefix (&startfile_prefixes
, gcc_exec_prefix
, "GCC",
3802 PREFIX_PRIORITY_LAST
, 0, 0);
3805 /* COMPILER_PATH and LIBRARY_PATH have values
3806 that are lists of directory names with colons. */
3808 temp
= getenv ("COMPILER_PATH");
3811 const char *startp
, *endp
;
3812 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3814 startp
= endp
= temp
;
3817 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3819 strncpy (nstore
, startp
, endp
- startp
);
3821 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3822 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3824 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3825 nstore
[endp
- startp
+ 1] = 0;
3828 nstore
[endp
- startp
] = 0;
3829 add_prefix (&exec_prefixes
, nstore
, 0,
3830 PREFIX_PRIORITY_LAST
, 0, 0);
3831 add_prefix (&include_prefixes
, nstore
, 0,
3832 PREFIX_PRIORITY_LAST
, 0, 0);
3835 endp
= startp
= endp
+ 1;
3842 temp
= getenv (LIBRARY_PATH_ENV
);
3843 if (temp
&& *cross_compile
== '0')
3845 const char *startp
, *endp
;
3846 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3848 startp
= endp
= temp
;
3851 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3853 strncpy (nstore
, startp
, endp
- startp
);
3855 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3856 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3858 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3859 nstore
[endp
- startp
+ 1] = 0;
3862 nstore
[endp
- startp
] = 0;
3863 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3864 PREFIX_PRIORITY_LAST
, 0, 1);
3867 endp
= startp
= endp
+ 1;
3874 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3875 temp
= getenv ("LPATH");
3876 if (temp
&& *cross_compile
== '0')
3878 const char *startp
, *endp
;
3879 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3881 startp
= endp
= temp
;
3884 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3886 strncpy (nstore
, startp
, endp
- startp
);
3888 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3889 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3891 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3892 nstore
[endp
- startp
+ 1] = 0;
3895 nstore
[endp
- startp
] = 0;
3896 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3897 PREFIX_PRIORITY_LAST
, 0, 1);
3900 endp
= startp
= endp
+ 1;
3907 /* Process the options and store input files and switches in their
3910 last_language_n_infiles
= -1;
3912 set_option_handlers (&handlers
);
3914 for (j
= 1; j
< decoded_options_count
; j
++)
3916 switch (decoded_options
[j
].opt_index
)
3928 for (j
= 1; j
< decoded_options_count
; j
++)
3930 if (decoded_options
[j
].opt_index
== OPT_SPECIAL_input_file
)
3932 const char *arg
= decoded_options
[j
].arg
;
3933 const char *p
= strrchr (arg
, '@');
3937 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3938 arg
= convert_filename (arg
, 0, access (arg
, F_OK
));
3940 /* For LTO static archive support we handle input file
3941 specifications that are composed of a filename and
3942 an offset like FNAME@OFFSET. */
3945 && sscanf (p
, "@%li%n", &offset
, &consumed
) >= 1
3946 && strlen (p
) == (unsigned int)consumed
)
3948 fname
= (char *)xmalloc (p
- arg
+ 1);
3949 memcpy (fname
, arg
, p
- arg
);
3950 fname
[p
- arg
] = '\0';
3951 /* Only accept non-stdin and existing FNAME parts, otherwise
3952 try with the full name. */
3953 if (strcmp (fname
, "-") == 0 || access (fname
, F_OK
) < 0)
3956 fname
= xstrdup (arg
);
3960 fname
= xstrdup (arg
);
3962 if (strcmp (fname
, "-") != 0 && access (fname
, F_OK
) < 0)
3963 perror_with_name (fname
);
3965 add_infile (arg
, spec_lang
);
3971 read_cmdline_option (&global_options
, &global_options_set
,
3972 decoded_options
+ j
, UNKNOWN_LOCATION
,
3973 CL_DRIVER
, &handlers
, global_dc
);
3976 /* If -save-temps=obj and -o name, create the prefix to use for %b.
3977 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
3978 if (save_temps_flag
== SAVE_TEMPS_OBJ
&& save_temps_prefix
!= NULL
)
3980 save_temps_length
= strlen (save_temps_prefix
);
3981 temp
= strrchr (lbasename (save_temps_prefix
), '.');
3984 save_temps_length
-= strlen (temp
);
3985 save_temps_prefix
[save_temps_length
] = '\0';
3989 else if (save_temps_prefix
!= NULL
)
3991 free (save_temps_prefix
);
3992 save_temps_prefix
= NULL
;
3995 if (save_temps_flag
&& use_pipes
)
3997 /* -save-temps overrides -pipe, so that temp files are produced */
3998 if (save_temps_flag
)
3999 warning (0, "-pipe ignored because -save-temps specified");
4005 const char *gcd
= getenv ("GCC_COMPARE_DEBUG");
4007 if (gcd
&& gcd
[0] == '-')
4010 compare_debug_opt
= gcd
;
4012 else if (gcd
&& *gcd
&& strcmp (gcd
, "0"))
4015 compare_debug_opt
= "-gtoggle";
4018 else if (compare_debug
< 0)
4021 gcc_assert (!compare_debug_opt
);
4024 /* Set up the search paths. We add directories that we expect to
4025 contain GNU Toolchain components before directories specified by
4026 the machine description so that we will find GNU components (like
4027 the GNU assembler) before those of the host system. */
4029 /* If we don't know where the toolchain has been installed, use the
4030 configured-in locations. */
4031 if (!gcc_exec_prefix
)
4034 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "GCC",
4035 PREFIX_PRIORITY_LAST
, 1, 0);
4036 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "BINUTILS",
4037 PREFIX_PRIORITY_LAST
, 2, 0);
4038 add_prefix (&exec_prefixes
, standard_exec_prefix
, "BINUTILS",
4039 PREFIX_PRIORITY_LAST
, 2, 0);
4041 add_prefix (&startfile_prefixes
, standard_exec_prefix
, "BINUTILS",
4042 PREFIX_PRIORITY_LAST
, 1, 0);
4045 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix
));
4046 tooldir_prefix2
= concat (tooldir_base_prefix
, spec_machine
,
4047 dir_separator_str
, NULL
);
4049 /* Look for tools relative to the location from which the driver is
4050 running, or, if that is not available, the configured prefix. */
4052 = concat (gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
4053 spec_machine
, dir_separator_str
,
4054 spec_version
, dir_separator_str
, tooldir_prefix2
, NULL
);
4055 free (tooldir_prefix2
);
4057 add_prefix (&exec_prefixes
,
4058 concat (tooldir_prefix
, "bin", dir_separator_str
, NULL
),
4059 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 0);
4060 add_prefix (&startfile_prefixes
,
4061 concat (tooldir_prefix
, "lib", dir_separator_str
, NULL
),
4062 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 1);
4063 free (tooldir_prefix
);
4065 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
4066 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
4067 then consider it to relocate with the rest of the GCC installation
4068 if GCC_EXEC_PREFIX is set.
4069 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
4070 if (target_system_root
&& !target_system_root_changed
&& gcc_exec_prefix
)
4072 char *tmp_prefix
= get_relative_prefix (decoded_options
[0].arg
,
4073 standard_bindir_prefix
,
4074 target_system_root
);
4075 if (tmp_prefix
&& access_check (tmp_prefix
, F_OK
) == 0)
4077 target_system_root
= tmp_prefix
;
4078 target_system_root_changed
= 1;
4083 /* More prefixes are enabled in main, after we read the specs file
4084 and determine whether this is cross-compilation or not. */
4086 if (n_infiles
== last_language_n_infiles
&& spec_lang
!= 0)
4087 warning (0, "%<-x %s%> after last input file has no effect", spec_lang
);
4089 /* Synthesize -fcompare-debug flag from the GCC_COMPARE_DEBUG
4090 environment variable. */
4091 if (compare_debug
== 2 || compare_debug
== 3)
4093 const char *opt
= concat ("-fcompare-debug=", compare_debug_opt
, NULL
);
4094 save_switch (opt
, 0, NULL
, false, true);
4098 /* Ensure we only invoke each subprocess once. */
4099 if (print_subprocess_help
|| print_help_list
|| print_version
)
4103 /* Create a dummy input file, so that we can pass
4104 the help option on to the various sub-processes. */
4105 add_infile ("help-dummy", "c");
4109 switches
[n_switches
].part1
= 0;
4111 infiles
[n_infiles
].name
= 0;
4114 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4115 and place that in the environment. */
4118 set_collect_gcc_options (void)
4123 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4125 obstack_grow (&collect_obstack
, "COLLECT_GCC_OPTIONS=",
4126 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4129 for (i
= 0; (int) i
< n_switches
; i
++)
4131 const char *const *args
;
4134 obstack_grow (&collect_obstack
, " ", 1);
4138 /* Ignore elided switches. */
4139 if ((switches
[i
].live_cond
4140 & (SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
))
4144 obstack_grow (&collect_obstack
, "'-", 2);
4145 q
= switches
[i
].part1
;
4146 while ((p
= strchr (q
, '\'')))
4148 obstack_grow (&collect_obstack
, q
, p
- q
);
4149 obstack_grow (&collect_obstack
, "'\\''", 4);
4152 obstack_grow (&collect_obstack
, q
, strlen (q
));
4153 obstack_grow (&collect_obstack
, "'", 1);
4155 for (args
= switches
[i
].args
; args
&& *args
; args
++)
4157 obstack_grow (&collect_obstack
, " '", 2);
4159 while ((p
= strchr (q
, '\'')))
4161 obstack_grow (&collect_obstack
, q
, p
- q
);
4162 obstack_grow (&collect_obstack
, "'\\''", 4);
4165 obstack_grow (&collect_obstack
, q
, strlen (q
));
4166 obstack_grow (&collect_obstack
, "'", 1);
4169 obstack_grow (&collect_obstack
, "\0", 1);
4170 xputenv (XOBFINISH (&collect_obstack
, char *));
4173 /* Process a spec string, accumulating and running commands. */
4175 /* These variables describe the input file name.
4176 input_file_number is the index on outfiles of this file,
4177 so that the output file name can be stored for later use by %o.
4178 input_basename is the start of the part of the input file
4179 sans all directory names, and basename_length is the number
4180 of characters starting there excluding the suffix .c or whatever. */
4182 static const char *gcc_input_filename
;
4183 static int input_file_number
;
4184 size_t input_filename_length
;
4185 static int basename_length
;
4186 static int suffixed_basename_length
;
4187 static const char *input_basename
;
4188 static const char *input_suffix
;
4189 #ifndef HOST_LACKS_INODE_NUMBERS
4190 static struct stat input_stat
;
4192 static int input_stat_set
;
4194 /* The compiler used to process the current input file. */
4195 static struct compiler
*input_file_compiler
;
4197 /* These are variables used within do_spec and do_spec_1. */
4199 /* Nonzero if an arg has been started and not yet terminated
4200 (with space, tab or newline). */
4201 static int arg_going
;
4203 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4204 is a temporary file name. */
4205 static int delete_this_arg
;
4207 /* Nonzero means %w has been seen; the next arg to be terminated
4208 is the output file name of this compilation. */
4209 static int this_is_output_file
;
4211 /* Nonzero means %s has been seen; the next arg to be terminated
4212 is the name of a library file and we should try the standard
4213 search dirs for it. */
4214 static int this_is_library_file
;
4216 /* Nonzero means %T has been seen; the next arg to be terminated
4217 is the name of a linker script and we should try all of the
4218 standard search dirs for it. If it is found insert a --script
4219 command line switch and then substitute the full path in place,
4220 otherwise generate an error message. */
4221 static int this_is_linker_script
;
4223 /* Nonzero means that the input of this command is coming from a pipe. */
4224 static int input_from_pipe
;
4226 /* Nonnull means substitute this for any suffix when outputting a switches
4228 static const char *suffix_subst
;
4230 /* If there is an argument being accumulated, terminate it and store it. */
4233 end_going_arg (void)
4239 obstack_1grow (&obstack
, 0);
4240 string
= XOBFINISH (&obstack
, const char *);
4241 if (this_is_library_file
)
4242 string
= find_file (string
);
4243 if (this_is_linker_script
)
4245 char * full_script_path
= find_a_file (&startfile_prefixes
, string
, R_OK
, true);
4247 if (full_script_path
== NULL
)
4249 error ("unable to locate default linker script %qs in the library search paths", string
);
4250 /* Script was not found on search path. */
4253 store_arg ("--script", false, false);
4254 string
= full_script_path
;
4256 store_arg (string
, delete_this_arg
, this_is_output_file
);
4257 if (this_is_output_file
)
4258 outfiles
[input_file_number
] = string
;
4264 /* Parse the WRAPPER string which is a comma separated list of the command line
4265 and insert them into the beginning of argbuf. */
4268 insert_wrapper (const char *wrapper
)
4272 char *buf
= xstrdup (wrapper
);
4274 unsigned int old_length
= argbuf
.length ();
4282 while ((p
= strchr (p
, ',')) != NULL
);
4284 argbuf
.safe_grow (old_length
+ n
);
4285 memmove (argbuf
.address () + n
,
4287 old_length
* sizeof (const_char_p
));
4301 while ((p
= strchr (p
, ',')) != NULL
);
4302 gcc_assert (i
== n
);
4305 /* Process the spec SPEC and run the commands specified therein.
4306 Returns 0 if the spec is successfully processed; -1 if failed. */
4309 do_spec (const char *spec
)
4313 value
= do_spec_2 (spec
);
4315 /* Force out any unfinished command.
4316 If -pipe, this forces out the last command if it ended in `|'. */
4319 if (argbuf
.length () > 0
4320 && !strcmp (argbuf
.last (), "|"))
4323 set_collect_gcc_options ();
4325 if (argbuf
.length () > 0)
4333 do_spec_2 (const char *spec
)
4339 delete_this_arg
= 0;
4340 this_is_output_file
= 0;
4341 this_is_library_file
= 0;
4342 this_is_linker_script
= 0;
4343 input_from_pipe
= 0;
4344 suffix_subst
= NULL
;
4346 result
= do_spec_1 (spec
, 0, NULL
);
4354 /* Process the given spec string and add any new options to the end
4355 of the switches/n_switches array. */
4358 do_option_spec (const char *name
, const char *spec
)
4360 unsigned int i
, value_count
, value_len
;
4361 const char *p
, *q
, *value
;
4362 char *tmp_spec
, *tmp_spec_p
;
4364 if (configure_default_options
[0].name
== NULL
)
4367 for (i
= 0; i
< ARRAY_SIZE (configure_default_options
); i
++)
4368 if (strcmp (configure_default_options
[i
].name
, name
) == 0)
4370 if (i
== ARRAY_SIZE (configure_default_options
))
4373 value
= configure_default_options
[i
].value
;
4374 value_len
= strlen (value
);
4376 /* Compute the size of the final spec. */
4379 while ((p
= strstr (p
, "%(VALUE)")) != NULL
)
4385 /* Replace each %(VALUE) by the specified value. */
4386 tmp_spec
= (char *) alloca (strlen (spec
) + 1
4387 + value_count
* (value_len
- strlen ("%(VALUE)")));
4388 tmp_spec_p
= tmp_spec
;
4390 while ((p
= strstr (q
, "%(VALUE)")) != NULL
)
4392 memcpy (tmp_spec_p
, q
, p
- q
);
4393 tmp_spec_p
= tmp_spec_p
+ (p
- q
);
4394 memcpy (tmp_spec_p
, value
, value_len
);
4395 tmp_spec_p
+= value_len
;
4396 q
= p
+ strlen ("%(VALUE)");
4398 strcpy (tmp_spec_p
, q
);
4400 do_self_spec (tmp_spec
);
4403 /* Process the given spec string and add any new options to the end
4404 of the switches/n_switches array. */
4407 do_self_spec (const char *spec
)
4412 do_spec_1 (" ", 0, NULL
);
4414 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4415 do_self_specs adds the replacements to switches array, so it shouldn't
4416 be processed afterwards. */
4417 for (i
= 0; i
< n_switches
; i
++)
4418 if ((switches
[i
].live_cond
& SWITCH_IGNORE
))
4419 switches
[i
].live_cond
|= SWITCH_IGNORE_PERMANENTLY
;
4421 if (argbuf
.length () > 0)
4423 const char **argbuf_copy
;
4424 struct cl_decoded_option
*decoded_options
;
4425 struct cl_option_handlers handlers
;
4426 unsigned int decoded_options_count
;
4429 /* Create a copy of argbuf with a dummy argv[0] entry for
4430 decode_cmdline_options_to_array. */
4431 argbuf_copy
= XNEWVEC (const char *,
4432 argbuf
.length () + 1);
4433 argbuf_copy
[0] = "";
4434 memcpy (argbuf_copy
+ 1, argbuf
.address (),
4435 argbuf
.length () * sizeof (const char *));
4437 decode_cmdline_options_to_array (argbuf
.length () + 1,
4439 CL_DRIVER
, &decoded_options
,
4440 &decoded_options_count
);
4443 set_option_handlers (&handlers
);
4445 for (j
= 1; j
< decoded_options_count
; j
++)
4447 switch (decoded_options
[j
].opt_index
)
4449 case OPT_SPECIAL_input_file
:
4450 /* Specs should only generate options, not input
4452 if (strcmp (decoded_options
[j
].arg
, "-") != 0)
4453 fatal_error ("switch %qs does not start with %<-%>",
4454 decoded_options
[j
].arg
);
4456 fatal_error ("spec-generated switch is just %<-%>");
4459 case OPT_fcompare_debug_second
:
4460 case OPT_fcompare_debug
:
4461 case OPT_fcompare_debug_
:
4463 /* Avoid duplicate processing of some options from
4464 compare-debug specs; just save them here. */
4465 save_switch (decoded_options
[j
].canonical_option
[0],
4466 (decoded_options
[j
].canonical_option_num_elements
4468 &decoded_options
[j
].canonical_option
[1], false, true);
4472 read_cmdline_option (&global_options
, &global_options_set
,
4473 decoded_options
+ j
, UNKNOWN_LOCATION
,
4474 CL_DRIVER
, &handlers
, global_dc
);
4480 switches
[n_switches
].part1
= 0;
4484 /* Callback for processing %D and %I specs. */
4486 struct spec_path_info
{
4491 bool separate_options
;
4495 spec_path (char *path
, void *data
)
4497 struct spec_path_info
*info
= (struct spec_path_info
*) data
;
4501 if (info
->omit_relative
&& !IS_ABSOLUTE_PATH (path
))
4504 if (info
->append_len
!= 0)
4506 len
= strlen (path
);
4507 memcpy (path
+ len
, info
->append
, info
->append_len
+ 1);
4510 if (!is_directory (path
, true))
4513 do_spec_1 (info
->option
, 1, NULL
);
4514 if (info
->separate_options
)
4515 do_spec_1 (" ", 0, NULL
);
4517 if (info
->append_len
== 0)
4519 len
= strlen (path
);
4520 save
= path
[len
- 1];
4521 if (IS_DIR_SEPARATOR (path
[len
- 1]))
4522 path
[len
- 1] = '\0';
4525 do_spec_1 (path
, 1, NULL
);
4526 do_spec_1 (" ", 0, NULL
);
4528 /* Must not damage the original path. */
4529 if (info
->append_len
== 0)
4530 path
[len
- 1] = save
;
4535 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4539 create_at_file (char **argv
)
4541 char *temp_file
= make_temp_file ("");
4542 char *at_argument
= concat ("@", temp_file
, NULL
);
4543 FILE *f
= fopen (temp_file
, "w");
4547 fatal_error ("could not open temporary response file %s",
4550 status
= writeargv (argv
, f
);
4553 fatal_error ("could not write to temporary response file %s",
4556 status
= fclose (f
);
4559 fatal_error ("could not close temporary response file %s",
4562 store_arg (at_argument
, 0, 0);
4564 record_temp_file (temp_file
, !save_temps_flag
, !save_temps_flag
);
4567 /* True if we should compile INFILE. */
4570 compile_input_file_p (struct infile
*infile
)
4572 if ((!infile
->language
) || (infile
->language
[0] != '*'))
4573 if (infile
->incompiler
== input_file_compiler
)
4578 /* Process each member of VEC as a spec. */
4581 do_specs_vec (vec
<char_p
> vec
)
4586 FOR_EACH_VEC_ELT (vec
, ix
, opt
)
4588 do_spec_1 (opt
, 1, NULL
);
4589 /* Make each accumulated option a separate argument. */
4590 do_spec_1 (" ", 0, NULL
);
4594 /* Process the sub-spec SPEC as a portion of a larger spec.
4595 This is like processing a whole spec except that we do
4596 not initialize at the beginning and we do not supply a
4597 newline by default at the end.
4598 INSWITCH nonzero means don't process %-sequences in SPEC;
4599 in this case, % is treated as an ordinary character.
4600 This is used while substituting switches.
4601 INSWITCH nonzero also causes SPC not to terminate an argument.
4603 Value is zero unless a line was finished
4604 and the command on that line reported an error. */
4607 do_spec_1 (const char *spec
, int inswitch
, const char *soft_matched_part
)
4609 const char *p
= spec
;
4614 /* If it's an empty string argument to a switch, keep it as is. */
4615 if (inswitch
&& !*p
)
4619 /* If substituting a switch, treat all chars like letters.
4620 Otherwise, NL, SPC, TAB and % are special. */
4621 switch (inswitch
? 'a' : c
)
4626 if (argbuf
.length () > 0
4627 && !strcmp (argbuf
.last (), "|"))
4629 /* A `|' before the newline means use a pipe here,
4630 but only if -pipe was specified.
4631 Otherwise, execute now and don't pass the `|' as an arg. */
4634 input_from_pipe
= 1;
4641 set_collect_gcc_options ();
4643 if (argbuf
.length () > 0)
4649 /* Reinitialize for a new command, and for a new argument. */
4652 delete_this_arg
= 0;
4653 this_is_output_file
= 0;
4654 this_is_library_file
= 0;
4655 this_is_linker_script
= 0;
4656 input_from_pipe
= 0;
4663 obstack_1grow (&obstack
, c
);
4671 /* Reinitialize for a new argument. */
4672 delete_this_arg
= 0;
4673 this_is_output_file
= 0;
4674 this_is_library_file
= 0;
4675 this_is_linker_script
= 0;
4682 fatal_error ("spec %qs invalid", spec
);
4685 if (save_temps_length
)
4686 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4688 obstack_grow (&obstack
, input_basename
, basename_length
);
4689 if (compare_debug
< 0)
4690 obstack_grow (&obstack
, ".gk", 3);
4695 if (save_temps_length
)
4696 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4698 obstack_grow (&obstack
, input_basename
, suffixed_basename_length
);
4699 if (compare_debug
< 0)
4700 obstack_grow (&obstack
, ".gk", 3);
4705 delete_this_arg
= 2;
4708 /* Dump out the directories specified with LIBRARY_PATH,
4709 followed by the absolute directories
4710 that we search for startfiles. */
4713 struct spec_path_info info
;
4716 info
.append_len
= 0;
4717 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4718 /* Used on systems which record the specified -L dirs
4719 and use them to search for dynamic linking.
4720 Relative directories always come from -B,
4721 and it is better not to use them for searching
4722 at run time. In particular, stage1 loses. */
4723 info
.omit_relative
= true;
4725 info
.omit_relative
= false;
4727 info
.separate_options
= false;
4729 for_each_path (&startfile_prefixes
, true, 0, spec_path
, &info
);
4734 /* %efoo means report an error with `foo' as error message
4735 and don't execute any more commands for this file. */
4739 while (*p
!= 0 && *p
!= '\n')
4741 buf
= (char *) alloca (p
- q
+ 1);
4742 strncpy (buf
, q
, p
- q
);
4744 error ("%s", _(buf
));
4749 /* %nfoo means report a notice with `foo' on stderr. */
4753 while (*p
!= 0 && *p
!= '\n')
4755 buf
= (char *) alloca (p
- q
+ 1);
4756 strncpy (buf
, q
, p
- q
);
4758 inform (0, "%s", _(buf
));
4768 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4769 defined, and it is not a directory, and it is
4770 writable, use it. Otherwise, treat this like any
4771 other temporary file. */
4773 if ((!save_temps_flag
)
4774 && (stat (HOST_BIT_BUCKET
, &st
) == 0) && (!S_ISDIR (st
.st_mode
))
4775 && (access (HOST_BIT_BUCKET
, W_OK
) == 0))
4777 obstack_grow (&obstack
, HOST_BIT_BUCKET
,
4778 strlen (HOST_BIT_BUCKET
));
4779 delete_this_arg
= 0;
4784 goto create_temp_file
;
4788 obstack_1grow (&obstack
, '-');
4789 delete_this_arg
= 0;
4792 /* consume suffix */
4793 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4795 if (p
[0] == '%' && p
[1] == 'O')
4800 goto create_temp_file
;
4804 /* consume suffix */
4805 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4807 if (p
[0] == '%' && p
[1] == 'O')
4812 goto create_temp_file
;
4818 struct temp_name
*t
;
4820 const char *suffix
= p
;
4821 char *saved_suffix
= NULL
;
4823 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4825 suffix_length
= p
- suffix
;
4826 if (p
[0] == '%' && p
[1] == 'O')
4829 /* We don't support extra suffix characters after %O. */
4830 if (*p
== '.' || ISALNUM ((unsigned char) *p
))
4831 fatal_error ("spec %qs has invalid %<%%0%c%>", spec
, *p
);
4832 if (suffix_length
== 0)
4833 suffix
= TARGET_OBJECT_SUFFIX
;
4837 = XNEWVEC (char, suffix_length
4838 + strlen (TARGET_OBJECT_SUFFIX
));
4839 strncpy (saved_suffix
, suffix
, suffix_length
);
4840 strcpy (saved_suffix
+ suffix_length
,
4841 TARGET_OBJECT_SUFFIX
);
4843 suffix_length
+= strlen (TARGET_OBJECT_SUFFIX
);
4846 if (compare_debug
< 0)
4848 suffix
= concat (".gk", suffix
, NULL
);
4852 /* If -save-temps=obj and -o were specified, use that for the
4854 if (save_temps_length
)
4857 temp_filename_length
4858 = save_temps_length
+ suffix_length
+ 1;
4859 tmp
= (char *) alloca (temp_filename_length
);
4860 memcpy (tmp
, save_temps_prefix
, save_temps_length
);
4861 memcpy (tmp
+ save_temps_length
, suffix
, suffix_length
);
4862 tmp
[save_temps_length
+ suffix_length
] = '\0';
4863 temp_filename
= save_string (tmp
, save_temps_length
4865 obstack_grow (&obstack
, temp_filename
,
4866 temp_filename_length
);
4868 delete_this_arg
= 0;
4872 /* If the gcc_input_filename has the same suffix specified
4873 for the %g, %u, or %U, and -save-temps is specified,
4874 we could end up using that file as an intermediate
4875 thus clobbering the user's source file (.e.g.,
4876 gcc -save-temps foo.s would clobber foo.s with the
4877 output of cpp0). So check for this condition and
4878 generate a temp file as the intermediate. */
4880 if (save_temps_flag
)
4883 temp_filename_length
= basename_length
+ suffix_length
+ 1;
4884 tmp
= (char *) alloca (temp_filename_length
);
4885 memcpy (tmp
, input_basename
, basename_length
);
4886 memcpy (tmp
+ basename_length
, suffix
, suffix_length
);
4887 tmp
[basename_length
+ suffix_length
] = '\0';
4888 temp_filename
= tmp
;
4890 if (filename_cmp (temp_filename
, gcc_input_filename
) != 0)
4892 #ifndef HOST_LACKS_INODE_NUMBERS
4893 struct stat st_temp
;
4895 /* Note, set_input() resets input_stat_set to 0. */
4896 if (input_stat_set
== 0)
4898 input_stat_set
= stat (gcc_input_filename
,
4900 if (input_stat_set
>= 0)
4904 /* If we have the stat for the gcc_input_filename
4905 and we can do the stat for the temp_filename
4906 then the they could still refer to the same
4907 file if st_dev/st_ino's are the same. */
4908 if (input_stat_set
!= 1
4909 || stat (temp_filename
, &st_temp
) < 0
4910 || input_stat
.st_dev
!= st_temp
.st_dev
4911 || input_stat
.st_ino
!= st_temp
.st_ino
)
4913 /* Just compare canonical pathnames. */
4914 char* input_realname
= lrealpath (gcc_input_filename
);
4915 char* temp_realname
= lrealpath (temp_filename
);
4916 bool files_differ
= filename_cmp (input_realname
, temp_realname
);
4917 free (input_realname
);
4918 free (temp_realname
);
4922 temp_filename
= save_string (temp_filename
,
4923 temp_filename_length
+ 1);
4924 obstack_grow (&obstack
, temp_filename
,
4925 temp_filename_length
);
4927 delete_this_arg
= 0;
4933 /* See if we already have an association of %g/%u/%U and
4935 for (t
= temp_names
; t
; t
= t
->next
)
4936 if (t
->length
== suffix_length
4937 && strncmp (t
->suffix
, suffix
, suffix_length
) == 0
4938 && t
->unique
== (c
== 'u' || c
== 'U' || c
== 'j'))
4941 /* Make a new association if needed. %u and %j
4943 if (t
== 0 || c
== 'u' || c
== 'j')
4947 t
= XNEW (struct temp_name
);
4948 t
->next
= temp_names
;
4951 t
->length
= suffix_length
;
4954 t
->suffix
= saved_suffix
;
4955 saved_suffix
= NULL
;
4958 t
->suffix
= save_string (suffix
, suffix_length
);
4959 t
->unique
= (c
== 'u' || c
== 'U' || c
== 'j');
4960 temp_filename
= make_temp_file (t
->suffix
);
4961 temp_filename_length
= strlen (temp_filename
);
4962 t
->filename
= temp_filename
;
4963 t
->filename_length
= temp_filename_length
;
4966 free (saved_suffix
);
4968 obstack_grow (&obstack
, t
->filename
, t
->filename_length
);
4969 delete_this_arg
= 1;
4977 if (at_file_supplied
)
4979 /* We are going to expand `%i' to `@FILE', where FILE
4980 is a newly-created temporary filename. The filenames
4981 that would usually be expanded in place of %o will be
4982 written to the temporary file. */
4987 for (i
= 0; i
< n_infiles
; i
++)
4988 if (compile_input_file_p (&infiles
[i
]))
4991 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
4993 /* Copy the strings over. */
4994 for (i
= 0, j
= 0; i
< n_infiles
; i
++)
4995 if (compile_input_file_p (&infiles
[i
]))
4997 argv
[j
] = CONST_CAST (char *, infiles
[i
].name
);
4998 infiles
[i
].compiled
= true;
5003 create_at_file (argv
);
5006 for (i
= 0; (int) i
< n_infiles
; i
++)
5007 if (compile_input_file_p (&infiles
[i
]))
5009 store_arg (infiles
[i
].name
, 0, 0);
5010 infiles
[i
].compiled
= true;
5015 obstack_grow (&obstack
, gcc_input_filename
,
5016 input_filename_length
);
5023 struct spec_path_info info
;
5027 do_spec_1 ("-imultilib", 1, NULL
);
5028 /* Make this a separate argument. */
5029 do_spec_1 (" ", 0, NULL
);
5030 do_spec_1 (multilib_dir
, 1, NULL
);
5031 do_spec_1 (" ", 0, NULL
);
5036 do_spec_1 ("-imultiarch", 1, NULL
);
5037 /* Make this a separate argument. */
5038 do_spec_1 (" ", 0, NULL
);
5039 do_spec_1 (multiarch_dir
, 1, NULL
);
5040 do_spec_1 (" ", 0, NULL
);
5043 if (gcc_exec_prefix
)
5045 do_spec_1 ("-iprefix", 1, NULL
);
5046 /* Make this a separate argument. */
5047 do_spec_1 (" ", 0, NULL
);
5048 do_spec_1 (gcc_exec_prefix
, 1, NULL
);
5049 do_spec_1 (" ", 0, NULL
);
5052 if (target_system_root_changed
||
5053 (target_system_root
&& target_sysroot_hdrs_suffix
))
5055 do_spec_1 ("-isysroot", 1, NULL
);
5056 /* Make this a separate argument. */
5057 do_spec_1 (" ", 0, NULL
);
5058 do_spec_1 (target_system_root
, 1, NULL
);
5059 if (target_sysroot_hdrs_suffix
)
5060 do_spec_1 (target_sysroot_hdrs_suffix
, 1, NULL
);
5061 do_spec_1 (" ", 0, NULL
);
5064 info
.option
= "-isystem";
5065 info
.append
= "include";
5066 info
.append_len
= strlen (info
.append
);
5067 info
.omit_relative
= false;
5068 info
.separate_options
= true;
5070 for_each_path (&include_prefixes
, false, info
.append_len
,
5073 info
.append
= "include-fixed";
5074 if (*sysroot_hdrs_suffix_spec
)
5075 info
.append
= concat (info
.append
, dir_separator_str
,
5076 multilib_dir
, NULL
);
5077 info
.append_len
= strlen (info
.append
);
5078 for_each_path (&include_prefixes
, false, info
.append_len
,
5085 int max
= n_infiles
;
5086 max
+= lang_specific_extra_outfiles
;
5088 if (HAVE_GNU_LD
&& at_file_supplied
)
5090 /* We are going to expand `%o' to `@FILE', where FILE
5091 is a newly-created temporary filename. The filenames
5092 that would usually be expanded in place of %o will be
5093 written to the temporary file. */
5098 /* Convert OUTFILES into a form suitable for writeargv. */
5100 /* Determine how many are non-NULL. */
5101 for (n_files
= 0, i
= 0; i
< max
; i
++)
5102 n_files
+= outfiles
[i
] != NULL
;
5104 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
5106 /* Copy the strings over. */
5107 for (i
= 0, j
= 0; i
< max
; i
++)
5110 argv
[j
] = CONST_CAST (char *, outfiles
[i
]);
5115 create_at_file (argv
);
5118 for (i
= 0; i
< max
; i
++)
5120 store_arg (outfiles
[i
], 0, 0);
5125 obstack_grow (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
5130 this_is_library_file
= 1;
5134 this_is_linker_script
= 1;
5138 outfiles
[input_file_number
] = NULL
;
5142 this_is_output_file
= 1;
5147 unsigned int cur_index
= argbuf
.length ();
5148 /* Handle the {...} following the %W. */
5150 fatal_error ("spec %qs has invalid %<%%W%c%>", spec
, *p
);
5151 p
= handle_braces (p
+ 1);
5155 /* If any args were output, mark the last one for deletion
5157 if (argbuf
.length () != cur_index
)
5158 record_temp_file (argbuf
.last (), 0, 1);
5162 /* %x{OPTION} records OPTION for %X to output. */
5170 /* Skip past the option value and make a copy. */
5172 fatal_error ("spec %qs has invalid %<%%x%c%>", spec
, *p
);
5175 string
= save_string (p1
+ 1, p
- p1
- 2);
5177 /* See if we already recorded this option. */
5178 FOR_EACH_VEC_ELT (linker_options
, ix
, opt
)
5179 if (! strcmp (string
, opt
))
5185 /* This option is new; add it. */
5186 add_linker_option (string
, strlen (string
));
5191 /* Dump out the options accumulated previously using %x. */
5193 do_specs_vec (linker_options
);
5196 /* Dump out the options accumulated previously using -Wa,. */
5198 do_specs_vec (assembler_options
);
5201 /* Dump out the options accumulated previously using -Wp,. */
5203 do_specs_vec (preprocessor_options
);
5206 /* Here are digits and numbers that just process
5207 a certain constant string as a spec. */
5210 value
= do_spec_1 (cc1_spec
, 0, NULL
);
5216 value
= do_spec_1 (cc1plus_spec
, 0, NULL
);
5222 value
= do_spec_1 (asm_spec
, 0, NULL
);
5228 value
= do_spec_1 (asm_final_spec
, 0, NULL
);
5235 const char *const spec
5236 = (input_file_compiler
->cpp_spec
5237 ? input_file_compiler
->cpp_spec
5239 value
= do_spec_1 (spec
, 0, NULL
);
5246 value
= do_spec_1 (endfile_spec
, 0, NULL
);
5252 value
= do_spec_1 (link_spec
, 0, NULL
);
5258 value
= do_spec_1 (lib_spec
, 0, NULL
);
5264 if (multilib_os_dir
== NULL
)
5265 obstack_1grow (&obstack
, '.');
5267 obstack_grow (&obstack
, multilib_os_dir
,
5268 strlen (multilib_os_dir
));
5272 value
= do_spec_1 (libgcc_spec
, 0, NULL
);
5278 /* We assume there is a directory
5279 separator at the end of this string. */
5280 if (target_system_root
)
5282 obstack_grow (&obstack
, target_system_root
,
5283 strlen (target_system_root
));
5284 if (target_sysroot_suffix
)
5285 obstack_grow (&obstack
, target_sysroot_suffix
,
5286 strlen (target_sysroot_suffix
));
5291 value
= do_spec_1 (startfile_spec
, 0, NULL
);
5296 /* Here we define characters other than letters and digits. */
5299 p
= handle_braces (p
);
5305 p
= handle_spec_function (p
, NULL
);
5311 obstack_1grow (&obstack
, '%');
5318 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '%')
5320 suffix_subst
= save_string (p
- 1, len
+ 1);
5325 /* Henceforth ignore the option(s) matching the pattern
5331 int have_wildcard
= 0;
5336 switch_option
= SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
;
5338 switch_option
= SWITCH_IGNORE
;
5340 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '\t')
5343 if (p
[len
-1] == '*')
5346 for (i
= 0; i
< n_switches
; i
++)
5347 if (!strncmp (switches
[i
].part1
, p
, len
- have_wildcard
)
5348 && (have_wildcard
|| switches
[i
].part1
[len
] == '\0'))
5350 switches
[i
].live_cond
|= switch_option
;
5351 /* User switch be validated from validate_all_switches.
5352 when the definition is seen from the spec file.
5353 If not defined anywhere, will be rejected. */
5354 if (switches
[i
].known
)
5355 switches
[i
].validated
= true;
5363 if (soft_matched_part
)
5365 if (soft_matched_part
[0])
5366 do_spec_1 (soft_matched_part
, 1, NULL
);
5367 /* Only insert a space after the substitution if it is at the
5368 end of the current sequence. So if:
5370 "%{foo=*:bar%*}%{foo=*:one%*two}"
5372 matches -foo=hello then it will produce:
5374 barhello onehellotwo
5376 if (*p
== 0 || *p
== '}')
5377 do_spec_1 (" ", 0, NULL
);
5380 /* Catch the case where a spec string contains something like
5381 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5382 hand side of the :. */
5383 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5386 /* Process a string found as the value of a spec given by name.
5387 This feature allows individual machine descriptions
5388 to add and use their own specs. */
5391 const char *name
= p
;
5392 struct spec_list
*sl
;
5395 /* The string after the S/P is the name of a spec that is to be
5397 while (*p
&& *p
!= ')')
5400 /* See if it's in the list. */
5401 for (len
= p
- name
, sl
= specs
; sl
; sl
= sl
->next
)
5402 if (sl
->name_len
== len
&& !strncmp (sl
->name
, name
, len
))
5404 name
= *(sl
->ptr_spec
);
5406 fnotice (stderr
, "Processing spec (%s), which is '%s'\n",
5414 value
= do_spec_1 (name
, 0, NULL
);
5419 /* Discard the closing paren. */
5426 error ("spec failure: unrecognized spec option %qc", c
);
5432 /* Backslash: treat next character as ordinary. */
5437 /* Ordinary character: put it into the current argument. */
5438 obstack_1grow (&obstack
, c
);
5442 /* End of string. If we are processing a spec function, we need to
5443 end any pending argument. */
5444 if (processing_spec_function
)
5450 /* Look up a spec function. */
5452 static const struct spec_function
*
5453 lookup_spec_function (const char *name
)
5455 const struct spec_function
*sf
;
5457 for (sf
= static_spec_functions
; sf
->name
!= NULL
; sf
++)
5458 if (strcmp (sf
->name
, name
) == 0)
5464 /* Evaluate a spec function. */
5467 eval_spec_function (const char *func
, const char *args
)
5469 const struct spec_function
*sf
;
5470 const char *funcval
;
5472 /* Saved spec processing context. */
5473 vec
<const_char_p
> save_argbuf
;
5476 int save_delete_this_arg
;
5477 int save_this_is_output_file
;
5478 int save_this_is_library_file
;
5479 int save_input_from_pipe
;
5480 int save_this_is_linker_script
;
5481 const char *save_suffix_subst
;
5483 int save_growing_size
;
5484 void *save_growing_value
;
5486 sf
= lookup_spec_function (func
);
5488 fatal_error ("unknown spec function %qs", func
);
5490 /* Push the spec processing context. */
5491 save_argbuf
= argbuf
;
5493 save_arg_going
= arg_going
;
5494 save_delete_this_arg
= delete_this_arg
;
5495 save_this_is_output_file
= this_is_output_file
;
5496 save_this_is_library_file
= this_is_library_file
;
5497 save_this_is_linker_script
= this_is_linker_script
;
5498 save_input_from_pipe
= input_from_pipe
;
5499 save_suffix_subst
= suffix_subst
;
5501 /* If we have some object growing now, finalize it so the args and function
5502 eval proceed from a cleared context. This is needed to prevent the first
5503 constructed arg from mistakenly including the growing value. We'll push
5504 this value back on the obstack once the function evaluation is done, to
5505 restore a consistent processing context for our caller. This is fine as
5506 the address of growing objects isn't guaranteed to remain stable until
5507 they are finalized, and we expect this situation to be rare enough for
5508 the extra copy not to be an issue. */
5509 save_growing_size
= obstack_object_size (&obstack
);
5510 if (save_growing_size
> 0)
5511 save_growing_value
= obstack_finish (&obstack
);
5513 /* Create a new spec processing context, and build the function
5517 if (do_spec_2 (args
) < 0)
5518 fatal_error ("error in args to spec function %qs", func
);
5520 /* argbuf_index is an index for the next argument to be inserted, and
5521 so contains the count of the args already inserted. */
5523 funcval
= (*sf
->func
) (argbuf
.length (),
5526 /* Pop the spec processing context. */
5528 argbuf
= save_argbuf
;
5530 arg_going
= save_arg_going
;
5531 delete_this_arg
= save_delete_this_arg
;
5532 this_is_output_file
= save_this_is_output_file
;
5533 this_is_library_file
= save_this_is_library_file
;
5534 this_is_linker_script
= save_this_is_linker_script
;
5535 input_from_pipe
= save_input_from_pipe
;
5536 suffix_subst
= save_suffix_subst
;
5538 if (save_growing_size
> 0)
5539 obstack_grow (&obstack
, save_growing_value
, save_growing_size
);
5544 /* Handle a spec function call of the form:
5548 ARGS is processed as a spec in a separate context and split into an
5549 argument vector in the normal fashion. The function returns a string
5550 containing a spec which we then process in the caller's context, or
5551 NULL if no processing is required.
5553 If RETVAL_NONNULL is not NULL, then store a bool whether function
5554 returned non-NULL. */
5557 handle_spec_function (const char *p
, bool *retval_nonnull
)
5560 const char *endp
, *funcval
;
5563 processing_spec_function
++;
5565 /* Get the function name. */
5566 for (endp
= p
; *endp
!= '\0'; endp
++)
5568 if (*endp
== '(') /* ) */
5570 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5571 if (!ISALNUM (*endp
) && !(*endp
== '-' || *endp
== '_'))
5572 fatal_error ("malformed spec function name");
5574 if (*endp
!= '(') /* ) */
5575 fatal_error ("no arguments for spec function");
5576 func
= save_string (p
, endp
- p
);
5579 /* Get the arguments. */
5580 for (count
= 0; *endp
!= '\0'; endp
++)
5589 else if (*endp
== '(') /* ) */
5594 fatal_error ("malformed spec function arguments");
5595 args
= save_string (p
, endp
- p
);
5598 /* p now points to just past the end of the spec function expression. */
5600 funcval
= eval_spec_function (func
, args
);
5601 if (funcval
!= NULL
&& do_spec_1 (funcval
, 0, NULL
) < 0)
5604 *retval_nonnull
= funcval
!= NULL
;
5609 processing_spec_function
--;
5614 /* Inline subroutine of handle_braces. Returns true if the current
5615 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5617 input_suffix_matches (const char *atom
, const char *end_atom
)
5619 return (input_suffix
5620 && !strncmp (input_suffix
, atom
, end_atom
- atom
)
5621 && input_suffix
[end_atom
- atom
] == '\0');
5624 /* Subroutine of handle_braces. Returns true if the current
5625 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5627 input_spec_matches (const char *atom
, const char *end_atom
)
5629 return (input_file_compiler
5630 && input_file_compiler
->suffix
5631 && input_file_compiler
->suffix
[0] != '\0'
5632 && !strncmp (input_file_compiler
->suffix
+ 1, atom
,
5634 && input_file_compiler
->suffix
[end_atom
- atom
+ 1] == '\0');
5637 /* Subroutine of handle_braces. Returns true if a switch
5638 matching the atom bracketed by ATOM and END_ATOM appeared on the
5641 switch_matches (const char *atom
, const char *end_atom
, int starred
)
5644 int len
= end_atom
- atom
;
5645 int plen
= starred
? len
: -1;
5647 for (i
= 0; i
< n_switches
; i
++)
5648 if (!strncmp (switches
[i
].part1
, atom
, len
)
5649 && (starred
|| switches
[i
].part1
[len
] == '\0')
5650 && check_live_switch (i
, plen
))
5653 /* Check if a switch with separated form matching the atom.
5654 We check -D and -U switches. */
5655 else if (switches
[i
].args
!= 0)
5657 if ((*switches
[i
].part1
== 'D' || *switches
[i
].part1
== 'U')
5658 && *switches
[i
].part1
== atom
[0])
5660 if (!strncmp (switches
[i
].args
[0], &atom
[1], len
- 1)
5661 && (starred
|| (switches
[i
].part1
[1] == '\0'
5662 && switches
[i
].args
[0][len
- 1] == '\0'))
5663 && check_live_switch (i
, (starred
? 1 : -1)))
5671 /* Inline subroutine of handle_braces. Mark all of the switches which
5672 match ATOM (extends to END_ATOM; STARRED indicates whether there
5673 was a star after the atom) for later processing. */
5675 mark_matching_switches (const char *atom
, const char *end_atom
, int starred
)
5678 int len
= end_atom
- atom
;
5679 int plen
= starred
? len
: -1;
5681 for (i
= 0; i
< n_switches
; i
++)
5682 if (!strncmp (switches
[i
].part1
, atom
, len
)
5683 && (starred
|| switches
[i
].part1
[len
] == '\0')
5684 && check_live_switch (i
, plen
))
5685 switches
[i
].ordering
= 1;
5688 /* Inline subroutine of handle_braces. Process all the currently
5689 marked switches through give_switch, and clear the marks. */
5691 process_marked_switches (void)
5695 for (i
= 0; i
< n_switches
; i
++)
5696 if (switches
[i
].ordering
== 1)
5698 switches
[i
].ordering
= 0;
5703 /* Handle a %{ ... } construct. P points just inside the leading {.
5704 Returns a pointer one past the end of the brace block, or 0
5705 if we call do_spec_1 and that returns -1. */
5708 handle_braces (const char *p
)
5710 const char *atom
, *end_atom
;
5711 const char *d_atom
= NULL
, *d_end_atom
= NULL
;
5712 const char *orig
= p
;
5720 bool a_must_be_last
= false;
5721 bool ordered_set
= false;
5722 bool disjunct_set
= false;
5723 bool disj_matched
= false;
5724 bool disj_starred
= true;
5725 bool n_way_choice
= false;
5726 bool n_way_matched
= false;
5728 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5735 /* Scan one "atom" (S in the description above of %{}, possibly
5736 with '!', '.', '@', ',', or '*' modifiers). */
5738 a_is_suffix
= false;
5739 a_is_starred
= false;
5740 a_is_negated
= false;
5741 a_is_spectype
= false;
5745 p
++, a_is_negated
= true;
5748 if (*p
== '%' && p
[1] == ':')
5752 p
= handle_spec_function (p
+ 2, &a_matched
);
5757 p
++, a_is_suffix
= true;
5759 p
++, a_is_spectype
= true;
5762 while (ISIDNUM (*p
) || *p
== '-' || *p
== '+' || *p
== '='
5763 || *p
== ',' || *p
== '.' || *p
== '@')
5768 p
++, a_is_starred
= 1;
5775 /* Substitute the switch(es) indicated by the current atom. */
5777 if (disjunct_set
|| n_way_choice
|| a_is_negated
|| a_is_suffix
5778 || a_is_spectype
|| atom
== end_atom
)
5781 mark_matching_switches (atom
, end_atom
, a_is_starred
);
5784 process_marked_switches ();
5788 /* Substitute some text if the current atom appears as a switch
5790 disjunct_set
= true;
5794 if (atom
&& atom
== end_atom
)
5796 if (!n_way_choice
|| disj_matched
|| *p
== '|'
5797 || a_is_negated
|| a_is_suffix
|| a_is_spectype
5801 /* An empty term may appear as the last choice of an
5802 N-way choice set; it means "otherwise". */
5803 a_must_be_last
= true;
5804 disj_matched
= !n_way_matched
;
5805 disj_starred
= false;
5809 if ((a_is_suffix
|| a_is_spectype
) && a_is_starred
)
5813 disj_starred
= false;
5815 /* Don't bother testing this atom if we already have a
5817 if (!disj_matched
&& !n_way_matched
)
5820 /* a_matched is already set by handle_spec_function. */;
5821 else if (a_is_suffix
)
5822 a_matched
= input_suffix_matches (atom
, end_atom
);
5823 else if (a_is_spectype
)
5824 a_matched
= input_spec_matches (atom
, end_atom
);
5826 a_matched
= switch_matches (atom
, end_atom
, a_is_starred
);
5828 if (a_matched
!= a_is_negated
)
5830 disj_matched
= true;
5832 d_end_atom
= end_atom
;
5839 /* Found the body, that is, the text to substitute if the
5840 current disjunction matches. */
5841 p
= process_brace_body (p
+ 1, d_atom
, d_end_atom
, disj_starred
,
5842 disj_matched
&& !n_way_matched
);
5846 /* If we have an N-way choice, reset state for the next
5850 n_way_choice
= true;
5851 n_way_matched
|= disj_matched
;
5852 disj_matched
= false;
5853 disj_starred
= true;
5854 d_atom
= d_end_atom
= NULL
;
5863 while (*p
++ != '}');
5868 fatal_error ("braced spec %qs is invalid at %qc", orig
, *p
);
5873 /* Subroutine of handle_braces. Scan and process a brace substitution body
5874 (X in the description of %{} syntax). P points one past the colon;
5875 ATOM and END_ATOM bracket the first atom which was found to be true
5876 (present) in the current disjunction; STARRED indicates whether all
5877 the atoms in the current disjunction were starred (for syntax validation);
5878 MATCHED indicates whether the disjunction matched or not, and therefore
5879 whether or not the body is to be processed through do_spec_1 or just
5880 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5884 process_brace_body (const char *p
, const char *atom
, const char *end_atom
,
5885 int starred
, int matched
)
5887 const char *body
, *end_body
;
5888 unsigned int nesting_level
;
5889 bool have_subst
= false;
5891 /* Locate the closing } or ;, honoring nested braces.
5892 Trim trailing whitespace. */
5901 if (!--nesting_level
)
5904 else if (*p
== ';' && nesting_level
== 1)
5906 else if (*p
== '%' && p
[1] == '*' && nesting_level
== 1)
5908 else if (*p
== '\0')
5914 while (end_body
[-1] == ' ' || end_body
[-1] == '\t')
5917 if (have_subst
&& !starred
)
5922 /* Copy the substitution body to permanent storage and execute it.
5923 If have_subst is false, this is a simple matter of running the
5924 body through do_spec_1... */
5925 char *string
= save_string (body
, end_body
- body
);
5928 if (do_spec_1 (string
, 0, NULL
) < 0)
5933 /* ... but if have_subst is true, we have to process the
5934 body once for each matching switch, with %* set to the
5935 variant part of the switch. */
5936 unsigned int hard_match_len
= end_atom
- atom
;
5939 for (i
= 0; i
< n_switches
; i
++)
5940 if (!strncmp (switches
[i
].part1
, atom
, hard_match_len
)
5941 && check_live_switch (i
, hard_match_len
))
5943 if (do_spec_1 (string
, 0,
5944 &switches
[i
].part1
[hard_match_len
]) < 0)
5946 /* Pass any arguments this switch has. */
5948 suffix_subst
= NULL
;
5956 fatal_error ("braced spec body %qs is invalid", body
);
5959 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5960 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5961 spec, or -1 if either exact match or %* is used.
5963 A -O switch is obsoleted by a later -O switch. A -f, -g, -m, or -W switch
5964 whose value does not begin with "no-" is obsoleted by the same value
5965 with the "no-", similarly for a switch with the "no-" prefix. */
5968 check_live_switch (int switchnum
, int prefix_length
)
5970 const char *name
= switches
[switchnum
].part1
;
5973 /* If we already processed this switch and determined if it was
5974 live or not, return our past determination. */
5975 if (switches
[switchnum
].live_cond
!= 0)
5976 return ((switches
[switchnum
].live_cond
& SWITCH_LIVE
) != 0
5977 && (switches
[switchnum
].live_cond
& SWITCH_FALSE
) == 0
5978 && (switches
[switchnum
].live_cond
& SWITCH_IGNORE_PERMANENTLY
)
5981 /* In the common case of {<at-most-one-letter>*}, a negating
5982 switch would always match, so ignore that case. We will just
5983 send the conflicting switches to the compiler phase. */
5984 if (prefix_length
>= 0 && prefix_length
<= 1)
5987 /* Now search for duplicate in a manner that depends on the name. */
5991 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
5992 if (switches
[i
].part1
[0] == 'O')
5994 switches
[switchnum
].validated
= true;
5995 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
6000 case 'W': case 'f': case 'm': case 'g':
6001 if (! strncmp (name
+ 1, "no-", 3))
6003 /* We have Xno-YYY, search for XYYY. */
6004 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
6005 if (switches
[i
].part1
[0] == name
[0]
6006 && ! strcmp (&switches
[i
].part1
[1], &name
[4]))
6008 /* --specs are validated with the validate_switches mechanism. */
6009 if (switches
[switchnum
].known
)
6010 switches
[switchnum
].validated
= true;
6011 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
6017 /* We have XYYY, search for Xno-YYY. */
6018 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
6019 if (switches
[i
].part1
[0] == name
[0]
6020 && switches
[i
].part1
[1] == 'n'
6021 && switches
[i
].part1
[2] == 'o'
6022 && switches
[i
].part1
[3] == '-'
6023 && !strcmp (&switches
[i
].part1
[4], &name
[1]))
6025 /* --specs are validated with the validate_switches mechanism. */
6026 if (switches
[switchnum
].known
)
6027 switches
[switchnum
].validated
= true;
6028 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
6035 /* Otherwise the switch is live. */
6036 switches
[switchnum
].live_cond
|= SWITCH_LIVE
;
6040 /* Pass a switch to the current accumulating command
6041 in the same form that we received it.
6042 SWITCHNUM identifies the switch; it is an index into
6043 the vector of switches gcc received, which is `switches'.
6044 This cannot fail since it never finishes a command line.
6046 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
6049 give_switch (int switchnum
, int omit_first_word
)
6051 if ((switches
[switchnum
].live_cond
& SWITCH_IGNORE
) != 0)
6054 if (!omit_first_word
)
6056 do_spec_1 ("-", 0, NULL
);
6057 do_spec_1 (switches
[switchnum
].part1
, 1, NULL
);
6060 if (switches
[switchnum
].args
!= 0)
6063 for (p
= switches
[switchnum
].args
; *p
; p
++)
6065 const char *arg
= *p
;
6067 do_spec_1 (" ", 0, NULL
);
6070 unsigned length
= strlen (arg
);
6073 while (length
-- && !IS_DIR_SEPARATOR (arg
[length
]))
6074 if (arg
[length
] == '.')
6076 (CONST_CAST (char *, arg
))[length
] = 0;
6080 do_spec_1 (arg
, 1, NULL
);
6082 (CONST_CAST (char *, arg
))[length
] = '.';
6083 do_spec_1 (suffix_subst
, 1, NULL
);
6086 do_spec_1 (arg
, 1, NULL
);
6090 do_spec_1 (" ", 0, NULL
);
6091 switches
[switchnum
].validated
= true;
6094 /* Search for a file named NAME trying various prefixes including the
6095 user's -B prefix and some standard ones.
6096 Return the absolute file name found. If nothing is found, return NAME. */
6099 find_file (const char *name
)
6101 char *newname
= find_a_file (&startfile_prefixes
, name
, R_OK
, true);
6102 return newname
? newname
: name
;
6105 /* Determine whether a directory exists. If LINKER, return 0 for
6106 certain fixed names not needed by the linker. */
6109 is_directory (const char *path1
, bool linker
)
6116 /* Ensure the string ends with "/.". The resulting path will be a
6117 directory even if the given path is a symbolic link. */
6118 len1
= strlen (path1
);
6119 path
= (char *) alloca (3 + len1
);
6120 memcpy (path
, path1
, len1
);
6122 if (!IS_DIR_SEPARATOR (cp
[-1]))
6123 *cp
++ = DIR_SEPARATOR
;
6127 /* Exclude directories that the linker is known to search. */
6129 && IS_DIR_SEPARATOR (path
[0])
6131 && filename_ncmp (path
+ 1, "lib", 3) == 0)
6133 && filename_ncmp (path
+ 1, "usr", 3) == 0
6134 && IS_DIR_SEPARATOR (path
[4])
6135 && filename_ncmp (path
+ 5, "lib", 3) == 0)))
6138 return (stat (path
, &st
) >= 0 && S_ISDIR (st
.st_mode
));
6141 /* Set up the various global variables to indicate that we're processing
6142 the input file named FILENAME. */
6145 set_input (const char *filename
)
6149 gcc_input_filename
= filename
;
6150 input_filename_length
= strlen (gcc_input_filename
);
6151 input_basename
= lbasename (gcc_input_filename
);
6153 /* Find a suffix starting with the last period,
6154 and set basename_length to exclude that suffix. */
6155 basename_length
= strlen (input_basename
);
6156 suffixed_basename_length
= basename_length
;
6157 p
= input_basename
+ basename_length
;
6158 while (p
!= input_basename
&& *p
!= '.')
6160 if (*p
== '.' && p
!= input_basename
)
6162 basename_length
= p
- input_basename
;
6163 input_suffix
= p
+ 1;
6168 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
6169 we will need to do a stat on the gcc_input_filename. The
6170 INPUT_STAT_SET signals that the stat is needed. */
6174 /* On fatal signals, delete all the temporary files. */
6177 fatal_signal (int signum
)
6179 signal (signum
, SIG_DFL
);
6180 delete_failure_queue ();
6181 delete_temp_files ();
6182 /* Get the same signal again, this time not handled,
6183 so its normal effect occurs. */
6184 kill (getpid (), signum
);
6187 /* Compare the contents of the two files named CMPFILE[0] and
6188 CMPFILE[1]. Return zero if they're identical, nonzero
6192 compare_files (char *cmpfile
[])
6195 FILE *temp
[2] = { NULL
, NULL
};
6201 void *map
[2] = { NULL
, NULL
};
6203 for (i
= 0; i
< 2; i
++)
6207 if (stat (cmpfile
[i
], &st
) < 0 || !S_ISREG (st
.st_mode
))
6209 error ("%s: could not determine length of compare-debug file %s",
6210 gcc_input_filename
, cmpfile
[i
]);
6215 length
[i
] = st
.st_size
;
6218 if (!ret
&& length
[0] != length
[1])
6220 error ("%s: -fcompare-debug failure (length)", gcc_input_filename
);
6225 for (i
= 0; i
< 2; i
++)
6227 int fd
= open (cmpfile
[i
], O_RDONLY
);
6230 error ("%s: could not open compare-debug file %s",
6231 gcc_input_filename
, cmpfile
[i
]);
6236 map
[i
] = mmap (NULL
, length
[i
], PROT_READ
, MAP_PRIVATE
, fd
, 0);
6239 if (map
[i
] == (void *) MAP_FAILED
)
6248 if (memcmp (map
[0], map
[1], length
[0]) != 0)
6250 error ("%s: -fcompare-debug failure", gcc_input_filename
);
6255 for (i
= 0; i
< 2; i
++)
6257 munmap ((caddr_t
) map
[i
], length
[i
]);
6266 for (i
= 0; i
< 2; i
++)
6268 temp
[i
] = fopen (cmpfile
[i
], "r");
6271 error ("%s: could not open compare-debug file %s",
6272 gcc_input_filename
, cmpfile
[i
]);
6278 if (!ret
&& temp
[0] && temp
[1])
6282 c0
= fgetc (temp
[0]);
6283 c1
= fgetc (temp
[1]);
6287 error ("%s: -fcompare-debug failure",
6288 gcc_input_filename
);
6297 for (i
= 1; i
>= 0; i
--)
6306 extern int main (int, char **);
6309 main (int argc
, char **argv
)
6313 int linker_was_run
= 0;
6314 int lang_n_infiles
= 0;
6315 int num_linker_inputs
= 0;
6316 char *explicit_link_files
;
6318 char *lto_wrapper_file
;
6320 struct user_specs
*uptr
;
6321 char **old_argv
= argv
;
6322 struct cl_decoded_option
*decoded_options
;
6323 unsigned int decoded_options_count
;
6325 p
= argv
[0] + strlen (argv
[0]);
6326 while (p
!= argv
[0] && !IS_DIR_SEPARATOR (p
[-1]))
6330 xmalloc_set_program_name (progname
);
6332 expandargv (&argc
, &argv
);
6334 /* Determine if any expansions were made. */
6335 if (argv
!= old_argv
)
6336 at_file_supplied
= true;
6338 /* Register the language-independent parameters. */
6339 global_init_params ();
6342 init_options_struct (&global_options
, &global_options_set
);
6344 decode_cmdline_options_to_array (argc
, CONST_CAST2 (const char **, char **,
6347 &decoded_options
, &decoded_options_count
);
6349 /* Unlock the stdio streams. */
6350 unlock_std_streams ();
6352 gcc_init_libintl ();
6354 diagnostic_initialize (global_dc
, 0);
6356 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6357 /* Perform host dependent initialization when needed. */
6358 GCC_DRIVER_HOST_INITIALIZATION
;
6361 if (atexit (delete_temp_files
) != 0)
6362 fatal_error ("atexit failed");
6364 if (signal (SIGINT
, SIG_IGN
) != SIG_IGN
)
6365 signal (SIGINT
, fatal_signal
);
6367 if (signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
6368 signal (SIGHUP
, fatal_signal
);
6370 if (signal (SIGTERM
, SIG_IGN
) != SIG_IGN
)
6371 signal (SIGTERM
, fatal_signal
);
6373 if (signal (SIGPIPE
, SIG_IGN
) != SIG_IGN
)
6374 signal (SIGPIPE
, fatal_signal
);
6377 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6378 receive the signal. A different setting is inheritable */
6379 signal (SIGCHLD
, SIG_DFL
);
6382 /* Parsing and gimplification sometimes need quite large stack.
6383 Increase stack size limits if possible. */
6384 stack_limit_increase (64 * 1024 * 1024);
6386 /* Allocate the argument vector. */
6389 obstack_init (&obstack
);
6391 /* Build multilib_select, et. al from the separate lines that make up each
6392 multilib selection. */
6394 const char *const *q
= multilib_raw
;
6397 obstack_init (&multilib_obstack
);
6398 while ((p
= *q
++) != (char *) 0)
6399 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6401 obstack_1grow (&multilib_obstack
, 0);
6402 multilib_select
= XOBFINISH (&multilib_obstack
, const char *);
6404 q
= multilib_matches_raw
;
6405 while ((p
= *q
++) != (char *) 0)
6406 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6408 obstack_1grow (&multilib_obstack
, 0);
6409 multilib_matches
= XOBFINISH (&multilib_obstack
, const char *);
6411 q
= multilib_exclusions_raw
;
6412 while ((p
= *q
++) != (char *) 0)
6413 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6415 obstack_1grow (&multilib_obstack
, 0);
6416 multilib_exclusions
= XOBFINISH (&multilib_obstack
, const char *);
6418 q
= multilib_reuse_raw
;
6419 while ((p
= *q
++) != (char *) 0)
6420 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6422 obstack_1grow (&multilib_obstack
, 0);
6423 multilib_reuse
= XOBFINISH (&multilib_obstack
, const char *);
6426 for (i
= 0; i
< ARRAY_SIZE (multilib_defaults_raw
); i
++)
6429 obstack_1grow (&multilib_obstack
, ' ');
6430 obstack_grow (&multilib_obstack
,
6431 multilib_defaults_raw
[i
],
6432 strlen (multilib_defaults_raw
[i
]));
6436 obstack_1grow (&multilib_obstack
, 0);
6437 multilib_defaults
= XOBFINISH (&multilib_obstack
, const char *);
6440 #ifdef INIT_ENVIRONMENT
6441 /* Set up any other necessary machine specific environment variables. */
6442 xputenv (INIT_ENVIRONMENT
);
6445 /* Make a table of what switches there are (switches, n_switches).
6446 Make a table of specified input files (infiles, n_infiles).
6447 Decode switches that are handled locally. */
6449 process_command (decoded_options_count
, decoded_options
);
6451 /* Initialize the vector of specs to just the default.
6452 This means one element containing 0s, as a terminator. */
6454 compilers
= XNEWVAR (struct compiler
, sizeof default_compilers
);
6455 memcpy (compilers
, default_compilers
, sizeof default_compilers
);
6456 n_compilers
= n_default_compilers
;
6458 /* Read specs from a file if there is one. */
6460 machine_suffix
= concat (spec_machine
, dir_separator_str
,
6461 spec_version
, dir_separator_str
, NULL
);
6462 just_machine_suffix
= concat (spec_machine
, dir_separator_str
, NULL
);
6464 specs_file
= find_a_file (&startfile_prefixes
, "specs", R_OK
, true);
6465 /* Read the specs file unless it is a default one. */
6466 if (specs_file
!= 0 && strcmp (specs_file
, "specs"))
6467 read_specs (specs_file
, true, false);
6471 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6472 for any override of as, ld and libraries. */
6473 specs_file
= (char *) alloca (strlen (standard_exec_prefix
)
6474 + strlen (just_machine_suffix
) + sizeof ("specs"));
6476 strcpy (specs_file
, standard_exec_prefix
);
6477 strcat (specs_file
, just_machine_suffix
);
6478 strcat (specs_file
, "specs");
6479 if (access (specs_file
, R_OK
) == 0)
6480 read_specs (specs_file
, true, false);
6482 /* Process any configure-time defaults specified for the command line
6483 options, via OPTION_DEFAULT_SPECS. */
6484 for (i
= 0; i
< ARRAY_SIZE (option_default_specs
); i
++)
6485 do_option_spec (option_default_specs
[i
].name
,
6486 option_default_specs
[i
].spec
);
6488 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6489 of the command line. */
6491 for (i
= 0; i
< ARRAY_SIZE (driver_self_specs
); i
++)
6492 do_self_spec (driver_self_specs
[i
]);
6494 /* If not cross-compiling, look for executables in the standard
6496 if (*cross_compile
== '0')
6498 if (*md_exec_prefix
)
6500 add_prefix (&exec_prefixes
, md_exec_prefix
, "GCC",
6501 PREFIX_PRIORITY_LAST
, 0, 0);
6505 /* Process sysroot_suffix_spec. */
6506 if (*sysroot_suffix_spec
!= 0
6507 && !no_sysroot_suffix
6508 && do_spec_2 (sysroot_suffix_spec
) == 0)
6510 if (argbuf
.length () > 1)
6511 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6512 else if (argbuf
.length () == 1)
6513 target_sysroot_suffix
= xstrdup (argbuf
.last ());
6516 #ifdef HAVE_LD_SYSROOT
6517 /* Pass the --sysroot option to the linker, if it supports that. If
6518 there is a sysroot_suffix_spec, it has already been processed by
6519 this point, so target_system_root really is the system root we
6521 if (target_system_root
)
6523 obstack_grow (&obstack
, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6524 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
6525 set_spec ("link", XOBFINISH (&obstack
, const char *), false);
6529 /* Process sysroot_hdrs_suffix_spec. */
6530 if (*sysroot_hdrs_suffix_spec
!= 0
6531 && !no_sysroot_suffix
6532 && do_spec_2 (sysroot_hdrs_suffix_spec
) == 0)
6534 if (argbuf
.length () > 1)
6535 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6536 else if (argbuf
.length () == 1)
6537 target_sysroot_hdrs_suffix
= xstrdup (argbuf
.last ());
6540 /* Look for startfiles in the standard places. */
6541 if (*startfile_prefix_spec
!= 0
6542 && do_spec_2 (startfile_prefix_spec
) == 0
6543 && do_spec_1 (" ", 0, NULL
) == 0)
6547 FOR_EACH_VEC_ELT (argbuf
, ndx
, arg
)
6548 add_sysrooted_prefix (&startfile_prefixes
, arg
, "BINUTILS",
6549 PREFIX_PRIORITY_LAST
, 0, 1);
6551 /* We should eventually get rid of all these and stick to
6552 startfile_prefix_spec exclusively. */
6553 else if (*cross_compile
== '0' || target_system_root
)
6555 if (*md_startfile_prefix
)
6556 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix
,
6557 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
6559 if (*md_startfile_prefix_1
)
6560 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix_1
,
6561 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
6563 /* If standard_startfile_prefix is relative, base it on
6564 standard_exec_prefix. This lets us move the installed tree
6565 as a unit. If GCC_EXEC_PREFIX is defined, base
6566 standard_startfile_prefix on that as well.
6568 If the prefix is relative, only search it for native compilers;
6569 otherwise we will search a directory containing host libraries. */
6570 if (IS_ABSOLUTE_PATH (standard_startfile_prefix
))
6571 add_sysrooted_prefix (&startfile_prefixes
,
6572 standard_startfile_prefix
, "BINUTILS",
6573 PREFIX_PRIORITY_LAST
, 0, 1);
6574 else if (*cross_compile
== '0')
6576 add_prefix (&startfile_prefixes
,
6577 concat (gcc_exec_prefix
6578 ? gcc_exec_prefix
: standard_exec_prefix
,
6580 standard_startfile_prefix
, NULL
),
6581 NULL
, PREFIX_PRIORITY_LAST
, 0, 1);
6584 /* Sysrooted prefixes are relocated because target_system_root is
6585 also relocated by gcc_exec_prefix. */
6586 if (*standard_startfile_prefix_1
)
6587 add_sysrooted_prefix (&startfile_prefixes
,
6588 standard_startfile_prefix_1
, "BINUTILS",
6589 PREFIX_PRIORITY_LAST
, 0, 1);
6590 if (*standard_startfile_prefix_2
)
6591 add_sysrooted_prefix (&startfile_prefixes
,
6592 standard_startfile_prefix_2
, "BINUTILS",
6593 PREFIX_PRIORITY_LAST
, 0, 1);
6596 /* Process any user specified specs in the order given on the command
6598 for (uptr
= user_specs_head
; uptr
; uptr
= uptr
->next
)
6600 char *filename
= find_a_file (&startfile_prefixes
, uptr
->filename
,
6602 read_specs (filename
? filename
: uptr
->filename
, false, true);
6605 /* Process any user self specs. */
6607 struct spec_list
*sl
;
6608 for (sl
= specs
; sl
; sl
= sl
->next
)
6609 if (sl
->name_len
== sizeof "self_spec" - 1
6610 && !strcmp (sl
->name
, "self_spec"))
6611 do_self_spec (*sl
->ptr_spec
);
6616 enum save_temps save
;
6618 if (!compare_debug_second
)
6620 n_switches_debug_check
[1] = n_switches
;
6621 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
6622 switches_debug_check
[1] = XDUPVEC (struct switchstr
, switches
,
6625 do_self_spec ("%:compare-debug-self-opt()");
6626 n_switches_debug_check
[0] = n_switches
;
6627 n_switches_alloc_debug_check
[0] = n_switches_alloc
;
6628 switches_debug_check
[0] = switches
;
6630 n_switches
= n_switches_debug_check
[1];
6631 n_switches_alloc
= n_switches_alloc_debug_check
[1];
6632 switches
= switches_debug_check
[1];
6635 /* Avoid crash when computing %j in this early. */
6636 save
= save_temps_flag
;
6637 save_temps_flag
= SAVE_TEMPS_NONE
;
6639 compare_debug
= -compare_debug
;
6640 do_self_spec ("%:compare-debug-self-opt()");
6642 save_temps_flag
= save
;
6644 if (!compare_debug_second
)
6646 n_switches_debug_check
[1] = n_switches
;
6647 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
6648 switches_debug_check
[1] = switches
;
6649 compare_debug
= -compare_debug
;
6650 n_switches
= n_switches_debug_check
[0];
6651 n_switches_alloc
= n_switches_debug_check
[0];
6652 switches
= switches_debug_check
[0];
6657 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6658 if (gcc_exec_prefix
)
6659 gcc_exec_prefix
= concat (gcc_exec_prefix
, spec_machine
, dir_separator_str
,
6660 spec_version
, dir_separator_str
, NULL
);
6662 /* Now we have the specs.
6663 Set the `valid' bits for switches that match anything in any spec. */
6665 validate_all_switches ();
6667 /* Now that we have the switches and the specs, set
6668 the subdirectory based on the options. */
6669 set_multilib_dir ();
6671 /* Set up to remember the pathname of gcc and any options
6672 needed for collect. We use argv[0] instead of progname because
6673 we need the complete pathname. */
6674 obstack_init (&collect_obstack
);
6675 obstack_grow (&collect_obstack
, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6676 obstack_grow (&collect_obstack
, argv
[0], strlen (argv
[0]) + 1);
6677 xputenv (XOBFINISH (&collect_obstack
, char *));
6679 /* Set up to remember the pathname of the lto wrapper. */
6682 lto_wrapper_file
= NULL
;
6684 lto_wrapper_file
= find_a_file (&exec_prefixes
, "lto-wrapper",
6686 if (lto_wrapper_file
)
6688 lto_wrapper_file
= convert_white_space (lto_wrapper_file
);
6689 lto_wrapper_spec
= lto_wrapper_file
;
6690 obstack_init (&collect_obstack
);
6691 obstack_grow (&collect_obstack
, "COLLECT_LTO_WRAPPER=",
6692 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
6693 obstack_grow (&collect_obstack
, lto_wrapper_spec
,
6694 strlen (lto_wrapper_spec
) + 1);
6695 xputenv (XOBFINISH (&collect_obstack
, char *));
6698 /* Reject switches that no pass was interested in. */
6700 for (i
= 0; (int) i
< n_switches
; i
++)
6701 if (! switches
[i
].validated
)
6702 error ("unrecognized command line option %<-%s%>", switches
[i
].part1
);
6704 /* Obey some of the options. */
6706 if (print_search_dirs
)
6708 printf (_("install: %s%s\n"),
6709 gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
6710 gcc_exec_prefix
? "" : machine_suffix
);
6711 printf (_("programs: %s\n"),
6712 build_search_list (&exec_prefixes
, "", false, false));
6713 printf (_("libraries: %s\n"),
6714 build_search_list (&startfile_prefixes
, "", false, true));
6718 if (print_file_name
)
6720 printf ("%s\n", find_file (print_file_name
));
6724 if (print_prog_name
)
6726 if (use_ld
!= NULL
&& ! strcmp (print_prog_name
, "ld"))
6728 /* Append USE_LD to to the default linker. */
6729 #ifdef DEFAULT_LINKER
6731 # ifdef HAVE_HOST_EXECUTABLE_SUFFIX
6732 int len
= (sizeof (DEFAULT_LINKER
)
6733 - sizeof (HOST_EXECUTABLE_SUFFIX
));
6737 char *default_linker
= xstrdup (DEFAULT_LINKER
);
6738 /* Strip HOST_EXECUTABLE_SUFFIX if DEFAULT_LINKER contains
6739 HOST_EXECUTABLE_SUFFIX. */
6740 if (! strcmp (&default_linker
[len
], HOST_EXECUTABLE_SUFFIX
))
6742 default_linker
[len
] = '\0';
6743 ld
= concat (default_linker
, use_ld
,
6744 HOST_EXECUTABLE_SUFFIX
, NULL
);
6749 ld
= concat (DEFAULT_LINKER
, use_ld
, NULL
);
6750 if (access (ld
, X_OK
) == 0)
6752 printf ("%s\n", ld
);
6756 print_prog_name
= concat (print_prog_name
, use_ld
, NULL
);
6758 char *newname
= find_a_file (&exec_prefixes
, print_prog_name
, X_OK
, 0);
6759 printf ("%s\n", (newname
? newname
: print_prog_name
));
6763 if (print_multi_lib
)
6765 print_multilib_info ();
6769 if (print_multi_directory
)
6771 if (multilib_dir
== NULL
)
6774 printf ("%s\n", multilib_dir
);
6778 if (print_multiarch
)
6780 if (multiarch_dir
== NULL
)
6783 printf ("%s\n", multiarch_dir
);
6789 if (target_system_root
)
6791 if (target_sysroot_suffix
)
6792 printf ("%s%s\n", target_system_root
, target_sysroot_suffix
);
6794 printf ("%s\n", target_system_root
);
6799 if (print_multi_os_directory
)
6801 if (multilib_os_dir
== NULL
)
6804 printf ("%s\n", multilib_os_dir
);
6808 if (print_sysroot_headers_suffix
)
6810 if (*sysroot_hdrs_suffix_spec
)
6812 printf("%s\n", (target_sysroot_hdrs_suffix
6813 ? target_sysroot_hdrs_suffix
6818 /* The error status indicates that only one set of fixed
6819 headers should be built. */
6820 fatal_error ("not configured with sysroot headers suffix");
6823 if (print_help_list
)
6829 printf (_("\nFor bug reporting instructions, please see:\n"));
6830 printf ("%s.\n", bug_report_url
);
6835 /* We do not exit here. Instead we have created a fake input file
6836 called 'help-dummy' which needs to be compiled, and we pass this
6837 on the various sub-processes, along with the --help switch.
6838 Ensure their output appears after ours. */
6839 fputc ('\n', stdout
);
6845 printf (_("%s %s%s\n"), progname
, pkgversion_string
,
6847 printf ("Copyright %s 2014 Free Software Foundation, Inc.\n",
6849 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
6850 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
6855 /* We do not exit here. We use the same mechanism of --help to print
6856 the version of the sub-processes. */
6857 fputc ('\n', stdout
);
6866 fnotice (stderr
, "Target: %s\n", spec_machine
);
6867 fnotice (stderr
, "Configured with: %s\n", configuration_arguments
);
6869 #ifdef THREAD_MODEL_SPEC
6870 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6871 but there's no point in doing all this processing just to get
6872 thread_model back. */
6873 obstack_init (&obstack
);
6874 do_spec_1 (THREAD_MODEL_SPEC
, 0, thread_model
);
6875 obstack_1grow (&obstack
, '\0');
6876 thrmod
= XOBFINISH (&obstack
, const char *);
6878 thrmod
= thread_model
;
6881 fnotice (stderr
, "Thread model: %s\n", thrmod
);
6883 /* compiler_version is truncated at the first space when initialized
6884 from version string, so truncate version_string at the first space
6885 before comparing. */
6886 for (n
= 0; version_string
[n
]; n
++)
6887 if (version_string
[n
] == ' ')
6890 if (! strncmp (version_string
, compiler_version
, n
)
6891 && compiler_version
[n
] == 0)
6892 fnotice (stderr
, "gcc version %s %s\n", version_string
,
6895 fnotice (stderr
, "gcc driver version %s %sexecuting gcc version %s\n",
6896 version_string
, pkgversion_string
, compiler_version
);
6902 if (n_infiles
== added_libraries
)
6903 fatal_error ("no input files");
6908 /* Make a place to record the compiler output file names
6909 that correspond to the input files. */
6912 i
+= lang_specific_extra_outfiles
;
6913 outfiles
= XCNEWVEC (const char *, i
);
6915 /* Record which files were specified explicitly as link input. */
6917 explicit_link_files
= XCNEWVEC (char, n_infiles
);
6919 combine_inputs
= have_o
|| flag_wpa
;
6921 for (i
= 0; (int) i
< n_infiles
; i
++)
6923 const char *name
= infiles
[i
].name
;
6924 struct compiler
*compiler
= lookup_compiler (name
,
6926 infiles
[i
].language
);
6928 if (compiler
&& !(compiler
->combinable
))
6929 combine_inputs
= false;
6931 if (lang_n_infiles
> 0 && compiler
!= input_file_compiler
6932 && infiles
[i
].language
&& infiles
[i
].language
[0] != '*')
6933 infiles
[i
].incompiler
= compiler
;
6937 input_file_compiler
= compiler
;
6938 infiles
[i
].incompiler
= compiler
;
6942 /* Since there is no compiler for this input file, assume it is a
6944 explicit_link_files
[i
] = 1;
6945 infiles
[i
].incompiler
= NULL
;
6947 infiles
[i
].compiled
= false;
6948 infiles
[i
].preprocessed
= false;
6951 if (!combine_inputs
&& have_c
&& have_o
&& lang_n_infiles
> 1)
6952 fatal_error ("cannot specify -o with -c, -S or -E with multiple files");
6954 for (i
= 0; (int) i
< n_infiles
; i
++)
6956 int this_file_error
= 0;
6958 /* Tell do_spec what to substitute for %i. */
6960 input_file_number
= i
;
6961 set_input (infiles
[i
].name
);
6963 if (infiles
[i
].compiled
)
6966 /* Use the same thing in %o, unless cp->spec says otherwise. */
6968 outfiles
[i
] = gcc_input_filename
;
6970 /* Figure out which compiler from the file's suffix. */
6973 = lookup_compiler (infiles
[i
].name
, input_filename_length
,
6974 infiles
[i
].language
);
6976 if (input_file_compiler
)
6978 /* Ok, we found an applicable compiler. Run its spec. */
6980 if (input_file_compiler
->spec
[0] == '#')
6982 error ("%s: %s compiler not installed on this system",
6983 gcc_input_filename
, &input_file_compiler
->spec
[1]);
6984 this_file_error
= 1;
6990 free (debug_check_temp_file
[0]);
6991 debug_check_temp_file
[0] = NULL
;
6993 free (debug_check_temp_file
[1]);
6994 debug_check_temp_file
[1] = NULL
;
6997 value
= do_spec (input_file_compiler
->spec
);
6998 infiles
[i
].compiled
= true;
7000 this_file_error
= 1;
7001 else if (compare_debug
&& debug_check_temp_file
[0])
7004 inform (0, "recompiling with -fcompare-debug");
7006 compare_debug
= -compare_debug
;
7007 n_switches
= n_switches_debug_check
[1];
7008 n_switches_alloc
= n_switches_alloc_debug_check
[1];
7009 switches
= switches_debug_check
[1];
7011 value
= do_spec (input_file_compiler
->spec
);
7013 compare_debug
= -compare_debug
;
7014 n_switches
= n_switches_debug_check
[0];
7015 n_switches_alloc
= n_switches_alloc_debug_check
[0];
7016 switches
= switches_debug_check
[0];
7020 error ("during -fcompare-debug recompilation");
7021 this_file_error
= 1;
7024 gcc_assert (debug_check_temp_file
[1]
7025 && filename_cmp (debug_check_temp_file
[0],
7026 debug_check_temp_file
[1]));
7029 inform (0, "comparing final insns dumps");
7031 if (compare_files (debug_check_temp_file
))
7032 this_file_error
= 1;
7037 free (debug_check_temp_file
[0]);
7038 debug_check_temp_file
[0] = NULL
;
7040 free (debug_check_temp_file
[1]);
7041 debug_check_temp_file
[1] = NULL
;
7046 /* If this file's name does not contain a recognized suffix,
7047 record it as explicit linker input. */
7050 explicit_link_files
[i
] = 1;
7052 /* Clear the delete-on-failure queue, deleting the files in it
7053 if this compilation failed. */
7055 if (this_file_error
)
7057 delete_failure_queue ();
7060 /* If this compilation succeeded, don't delete those files later. */
7061 clear_failure_queue ();
7064 /* Reset the input file name to the first compile/object file name, for use
7065 with %b in LINK_SPEC. We use the first input file that we can find
7066 a compiler to compile it instead of using infiles.language since for
7067 languages other than C we use aliases that we then lookup later. */
7072 for (i
= 0; i
< n_infiles
; i
++)
7073 if (infiles
[i
].incompiler
7074 || (infiles
[i
].language
&& infiles
[i
].language
[0] != '*'))
7076 set_input (infiles
[i
].name
);
7083 /* Make sure INPUT_FILE_NUMBER points to first available open
7085 input_file_number
= n_infiles
;
7086 if (lang_specific_pre_link ())
7090 /* Determine if there are any linker input files. */
7091 num_linker_inputs
= 0;
7092 for (i
= 0; (int) i
< n_infiles
; i
++)
7093 if (explicit_link_files
[i
] || outfiles
[i
] != NULL
)
7094 num_linker_inputs
++;
7096 /* Run ld to link all the compiler output files. */
7098 if (num_linker_inputs
> 0 && !seen_error () && print_subprocess_help
< 2)
7100 int tmp
= execution_count
;
7104 #if HAVE_LTO_PLUGIN > 0
7105 #if HAVE_LTO_PLUGIN == 2
7106 const char *fno_use_linker_plugin
= "fno-use-linker-plugin";
7108 const char *fuse_linker_plugin
= "fuse-linker-plugin";
7112 /* We'll use ld if we can't find collect2. */
7113 if (! strcmp (linker_name_spec
, "collect2"))
7115 char *s
= find_a_file (&exec_prefixes
, "collect2", X_OK
, false);
7117 linker_name_spec
= "ld";
7120 #if HAVE_LTO_PLUGIN > 0
7121 #if HAVE_LTO_PLUGIN == 2
7122 if (!switch_matches (fno_use_linker_plugin
,
7123 fno_use_linker_plugin
7124 + strlen (fno_use_linker_plugin
), 0))
7126 if (switch_matches (fuse_linker_plugin
,
7128 + strlen (fuse_linker_plugin
), 0))
7131 char *temp_spec
= find_a_file (&exec_prefixes
,
7132 LTOPLUGINSONAME
, R_OK
,
7135 fatal_error ("-fuse-linker-plugin, but %s not found",
7137 linker_plugin_file_spec
= convert_white_space (temp_spec
);
7140 lto_gcc_spec
= argv
[0];
7143 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
7145 putenv_from_prefixes (&exec_prefixes
, "COMPILER_PATH", false);
7146 putenv_from_prefixes (&startfile_prefixes
, LIBRARY_PATH_ENV
, true);
7148 if (print_subprocess_help
== 1)
7150 printf (_("\nLinker options\n==============\n\n"));
7151 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
7152 " to the linker.\n\n"));
7155 value
= do_spec (link_command_spec
);
7158 linker_was_run
= (tmp
!= execution_count
);
7161 /* If options said don't run linker,
7162 complain about input files to be given to the linker. */
7164 if (! linker_was_run
&& !seen_error ())
7165 for (i
= 0; (int) i
< n_infiles
; i
++)
7166 if (explicit_link_files
[i
]
7167 && !(infiles
[i
].language
&& infiles
[i
].language
[0] == '*'))
7168 warning (0, "%s: linker input file unused because linking not done",
7171 /* Delete some or all of the temporary files we made. */
7174 delete_failure_queue ();
7175 delete_temp_files ();
7177 if (print_help_list
)
7179 printf (("\nFor bug reporting instructions, please see:\n"));
7180 printf ("%s\n", bug_report_url
);
7184 return (signal_count
!= 0 ? 2
7185 : seen_error () ? (pass_exit_codes
? greatest_status
: 1)
7189 /* Find the proper compilation spec for the file name NAME,
7190 whose length is LENGTH. LANGUAGE is the specified language,
7191 or 0 if this file is to be passed to the linker. */
7193 static struct compiler
*
7194 lookup_compiler (const char *name
, size_t length
, const char *language
)
7196 struct compiler
*cp
;
7198 /* If this was specified by the user to be a linker input, indicate that. */
7199 if (language
!= 0 && language
[0] == '*')
7202 /* Otherwise, look for the language, if one is spec'd. */
7205 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7206 if (cp
->suffix
[0] == '@' && !strcmp (cp
->suffix
+ 1, language
))
7209 error ("language %s not recognized", language
);
7213 /* Look for a suffix. */
7214 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7216 if (/* The suffix `-' matches only the file name `-'. */
7217 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
7218 || (strlen (cp
->suffix
) < length
7219 /* See if the suffix matches the end of NAME. */
7220 && !strcmp (cp
->suffix
,
7221 name
+ length
- strlen (cp
->suffix
))
7226 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
7227 /* Look again, but case-insensitively this time. */
7229 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7231 if (/* The suffix `-' matches only the file name `-'. */
7232 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
7233 || (strlen (cp
->suffix
) < length
7234 /* See if the suffix matches the end of NAME. */
7235 && ((!strcmp (cp
->suffix
,
7236 name
+ length
- strlen (cp
->suffix
))
7237 || !strpbrk (cp
->suffix
, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
7238 && !strcasecmp (cp
->suffix
,
7239 name
+ length
- strlen (cp
->suffix
)))
7245 if (cp
>= compilers
)
7247 if (cp
->spec
[0] != '@')
7248 /* A non-alias entry: return it. */
7251 /* An alias entry maps a suffix to a language.
7252 Search for the language; pass 0 for NAME and LENGTH
7253 to avoid infinite recursion if language not found. */
7254 return lookup_compiler (NULL
, 0, cp
->spec
+ 1);
7260 save_string (const char *s
, int len
)
7262 char *result
= XNEWVEC (char, len
+ 1);
7264 memcpy (result
, s
, len
);
7270 pfatal_with_name (const char *name
)
7272 perror_with_name (name
);
7273 delete_temp_files ();
7278 perror_with_name (const char *name
)
7280 error ("%s: %m", name
);
7284 validate_switches_from_spec (const char *spec
, bool user
)
7286 const char *p
= spec
;
7289 if (c
== '%' && (*p
== '{' || *p
== '<' || (*p
== 'W' && *++p
== '{')))
7290 /* We have a switch spec. */
7291 p
= validate_switches (p
+ 1, user
);
7295 validate_all_switches (void)
7297 struct compiler
*comp
;
7298 struct spec_list
*spec
;
7300 for (comp
= compilers
; comp
->spec
; comp
++)
7301 validate_switches_from_spec (comp
->spec
, false);
7303 /* Look through the linked list of specs read from the specs file. */
7304 for (spec
= specs
; spec
; spec
= spec
->next
)
7305 validate_switches_from_spec (*spec
->ptr_spec
, spec
->user_p
);
7307 validate_switches_from_spec (link_command_spec
, false);
7310 /* Look at the switch-name that comes after START
7311 and mark as valid all supplied switches that match it. */
7314 validate_switches (const char *start
, bool user_spec
)
7316 const char *p
= start
;
7320 bool suffix
= false;
7321 bool starred
= false;
7323 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7332 if (*p
== '.' || *p
== ',')
7336 while (ISIDNUM (*p
) || *p
== '-' || *p
== '+' || *p
== '='
7337 || *p
== ',' || *p
== '.' || *p
== '@')
7342 starred
= true, p
++;
7348 /* Mark all matching switches as valid. */
7349 for (i
= 0; i
< n_switches
; i
++)
7350 if (!strncmp (switches
[i
].part1
, atom
, len
)
7351 && (starred
|| switches
[i
].part1
[len
] == '\0')
7352 && (switches
[i
].known
|| user_spec
))
7353 switches
[i
].validated
= true;
7357 if (*p
&& (p
[-1] == '|' || p
[-1] == '&'))
7360 if (*p
&& p
[-1] == ':')
7362 while (*p
&& *p
!= ';' && *p
!= '}')
7367 if (*p
== '{' || *p
== '<')
7368 p
= validate_switches (p
+1, user_spec
);
7369 else if (p
[0] == 'W' && p
[1] == '{')
7370 p
= validate_switches (p
+2, user_spec
);
7377 if (*p
&& p
[-1] == ';')
7391 static struct mdswitchstr
*mdswitches
;
7392 static int n_mdswitches
;
7394 /* Check whether a particular argument was used. The first time we
7395 canonicalize the switches to keep only the ones we care about. */
7398 used_arg (const char *p
, int len
)
7403 const char *replace
;
7408 static struct mswitchstr
*mswitches
;
7409 static int n_mswitches
;
7414 struct mswitchstr
*matches
;
7418 /* Break multilib_matches into the component strings of string
7419 and replacement string. */
7420 for (q
= multilib_matches
; *q
!= '\0'; q
++)
7425 = (struct mswitchstr
*) alloca ((sizeof (struct mswitchstr
)) * cnt
);
7427 q
= multilib_matches
;
7436 fatal_error ("multilib spec %qs is invalid",
7441 matches
[i
].len
= q
- matches
[i
].str
;
7443 matches
[i
].replace
= ++q
;
7444 while (*q
!= ';' && *q
!= '\0')
7447 goto invalid_matches
;
7450 matches
[i
].rep_len
= q
- matches
[i
].replace
;
7456 /* Now build a list of the replacement string for switches that we care
7457 about. Make sure we allocate at least one entry. This prevents
7458 xmalloc from calling fatal, and prevents us from re-executing this
7461 = XNEWVEC (struct mswitchstr
, n_mdswitches
+ (n_switches
? n_switches
: 1));
7462 for (i
= 0; i
< n_switches
; i
++)
7463 if ((switches
[i
].live_cond
& SWITCH_IGNORE
) == 0)
7465 int xlen
= strlen (switches
[i
].part1
);
7466 for (j
= 0; j
< cnt
; j
++)
7467 if (xlen
== matches
[j
].len
7468 && ! strncmp (switches
[i
].part1
, matches
[j
].str
, xlen
))
7470 mswitches
[n_mswitches
].str
= matches
[j
].replace
;
7471 mswitches
[n_mswitches
].len
= matches
[j
].rep_len
;
7472 mswitches
[n_mswitches
].replace
= (char *) 0;
7473 mswitches
[n_mswitches
].rep_len
= 0;
7479 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7480 on the command line nor any options mutually incompatible with
7482 for (i
= 0; i
< n_mdswitches
; i
++)
7486 for (q
= multilib_options
; *q
!= '\0'; q
++)
7492 while (strncmp (q
, mdswitches
[i
].str
, mdswitches
[i
].len
) != 0
7493 || strchr (" /", q
[mdswitches
[i
].len
]) == NULL
)
7495 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
7502 if (*q
!= ' ' && *q
!= '\0')
7504 while (*r
!= ' ' && *r
!= '\0')
7507 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
7510 if (used_arg (r
, q
- r
))
7515 mswitches
[n_mswitches
].str
= mdswitches
[i
].str
;
7516 mswitches
[n_mswitches
].len
= mdswitches
[i
].len
;
7517 mswitches
[n_mswitches
].replace
= (char *) 0;
7518 mswitches
[n_mswitches
].rep_len
= 0;
7531 for (i
= 0; i
< n_mswitches
; i
++)
7532 if (len
== mswitches
[i
].len
&& ! strncmp (p
, mswitches
[i
].str
, len
))
7539 default_arg (const char *p
, int len
)
7543 for (i
= 0; i
< n_mdswitches
; i
++)
7544 if (len
== mdswitches
[i
].len
&& ! strncmp (p
, mdswitches
[i
].str
, len
))
7550 /* Work out the subdirectory to use based on the options. The format of
7551 multilib_select is a list of elements. Each element is a subdirectory
7552 name followed by a list of options followed by a semicolon. The format
7553 of multilib_exclusions is the same, but without the preceding
7554 directory. First gcc will check the exclusions, if none of the options
7555 beginning with an exclamation point are present, and all of the other
7556 options are present, then we will ignore this completely. Passing
7557 that, gcc will consider each multilib_select in turn using the same
7558 rules for matching the options. If a match is found, that subdirectory
7560 A subdirectory name is optionally followed by a colon and the corresponding
7564 set_multilib_dir (void)
7567 unsigned int this_path_len
;
7568 const char *this_path
, *this_arg
;
7569 const char *start
, *end
;
7571 int ok
, ndfltok
, first
;
7574 start
= multilib_defaults
;
7575 while (*start
== ' ' || *start
== '\t')
7577 while (*start
!= '\0')
7580 while (*start
!= ' ' && *start
!= '\t' && *start
!= '\0')
7582 while (*start
== ' ' || *start
== '\t')
7590 mdswitches
= XNEWVEC (struct mdswitchstr
, n_mdswitches
);
7591 for (start
= multilib_defaults
; *start
!= '\0'; start
= end
+ 1)
7593 while (*start
== ' ' || *start
== '\t')
7599 for (end
= start
+ 1;
7600 *end
!= ' ' && *end
!= '\t' && *end
!= '\0'; end
++)
7603 obstack_grow (&multilib_obstack
, start
, end
- start
);
7604 obstack_1grow (&multilib_obstack
, 0);
7605 mdswitches
[i
].str
= XOBFINISH (&multilib_obstack
, const char *);
7606 mdswitches
[i
++].len
= end
- start
;
7613 p
= multilib_exclusions
;
7616 /* Ignore newlines. */
7623 /* Check the arguments. */
7630 fatal_error ("multilib exclusions %qs is invalid",
7631 multilib_exclusions
);
7641 while (*p
!= ' ' && *p
!= ';')
7644 goto invalid_exclusions
;
7648 if (*this_arg
!= '!')
7656 ok
= used_arg (this_arg
, p
- this_arg
);
7671 p
= multilib_select
;
7673 /* Append multilib reuse rules if any. With those rules, we can reuse
7674 one multilib for certain different options sets. */
7675 if (strlen (multilib_reuse
) > 0)
7676 p
= concat (p
, multilib_reuse
, NULL
);
7680 /* Ignore newlines. */
7687 /* Get the initial path. */
7694 fatal_error ("multilib select %qs %qs is invalid",
7695 multilib_select
, multilib_reuse
);
7699 this_path_len
= p
- this_path
;
7701 /* Check the arguments. */
7708 goto invalid_select
;
7717 while (*p
!= ' ' && *p
!= ';')
7720 goto invalid_select
;
7724 if (*this_arg
!= '!')
7732 /* If this is a default argument, we can just ignore it.
7733 This is true even if this_arg begins with '!'. Beginning
7734 with '!' does not mean that this argument is necessarily
7735 inappropriate for this library: it merely means that
7736 there is a more specific library which uses this
7737 argument. If this argument is a default, we need not
7738 consider that more specific library. */
7739 ok
= used_arg (this_arg
, p
- this_arg
);
7746 if (default_arg (this_arg
, p
- this_arg
))
7755 if (this_path_len
!= 1
7756 || this_path
[0] != '.')
7758 char *new_multilib_dir
= XNEWVEC (char, this_path_len
+ 1);
7761 strncpy (new_multilib_dir
, this_path
, this_path_len
);
7762 new_multilib_dir
[this_path_len
] = '\0';
7763 q
= strchr (new_multilib_dir
, ':');
7766 multilib_dir
= new_multilib_dir
;
7773 const char *q
= this_path
, *end
= this_path
+ this_path_len
;
7775 while (q
< end
&& *q
!= ':')
7779 const char *q2
= q
+ 1, *ml_end
= end
;
7780 char *new_multilib_os_dir
;
7782 while (q2
< end
&& *q2
!= ':')
7786 new_multilib_os_dir
= XNEWVEC (char, ml_end
- q
);
7787 memcpy (new_multilib_os_dir
, q
+ 1, ml_end
- q
- 1);
7788 new_multilib_os_dir
[ml_end
- q
- 1] = '\0';
7789 multilib_os_dir
= *new_multilib_os_dir
? new_multilib_os_dir
: ".";
7791 if (q2
< end
&& *q2
== ':')
7793 char *new_multiarch_dir
= XNEWVEC (char, end
- q2
);
7794 memcpy (new_multiarch_dir
, q2
+ 1, end
- q2
- 1);
7795 new_multiarch_dir
[end
- q2
- 1] = '\0';
7796 multiarch_dir
= new_multiarch_dir
;
7805 if (multilib_dir
== NULL
&& multilib_os_dir
!= NULL
7806 && strcmp (multilib_os_dir
, ".") == 0)
7808 free (CONST_CAST (char *, multilib_os_dir
));
7809 multilib_os_dir
= NULL
;
7811 else if (multilib_dir
!= NULL
&& multilib_os_dir
== NULL
)
7812 multilib_os_dir
= multilib_dir
;
7815 /* Print out the multiple library subdirectory selection
7816 information. This prints out a series of lines. Each line looks
7817 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7818 required. Only the desired options are printed out, the negative
7819 matches. The options are print without a leading dash. There are
7820 no spaces to make it easy to use the information in the shell.
7821 Each subdirectory is printed only once. This assumes the ordering
7822 generated by the genmultilib script. Also, we leave out ones that match
7826 print_multilib_info (void)
7828 const char *p
= multilib_select
;
7829 const char *last_path
= 0, *this_path
;
7831 unsigned int last_path_len
= 0;
7836 /* Ignore newlines. */
7843 /* Get the initial path. */
7850 fatal_error ("multilib select %qs is invalid", multilib_select
);
7856 /* When --disable-multilib was used but target defines
7857 MULTILIB_OSDIRNAMES, entries starting with .: (and not starting
7858 with .:: for multiarch configurations) are there just to find
7859 multilib_os_dir, so skip them from output. */
7860 if (this_path
[0] == '.' && this_path
[1] == ':' && this_path
[2] != ':')
7863 /* Check for matches with the multilib_exclusions. We don't bother
7864 with the '!' in either list. If any of the exclusion rules match
7865 all of its options with the select rule, we skip it. */
7867 const char *e
= multilib_exclusions
;
7868 const char *this_arg
;
7873 /* Ignore newlines. */
7880 /* Check the arguments. */
7889 fatal_error ("multilib exclusion %qs is invalid",
7890 multilib_exclusions
);
7901 while (*e
!= ' ' && *e
!= ';')
7904 goto invalid_exclusion
;
7912 int len
= e
- this_arg
;
7915 goto invalid_select
;
7919 while (*q
!= ' ' && *q
!= ';')
7922 goto invalid_select
;
7926 if (! strncmp (arg
, this_arg
,
7927 (len
< q
- arg
) ? q
- arg
: len
)
7928 || default_arg (this_arg
, e
- this_arg
))
7958 /* If this is a duplicate, skip it. */
7959 skip
= (last_path
!= 0
7960 && (unsigned int) (p
- this_path
) == last_path_len
7961 && ! filename_ncmp (last_path
, this_path
, last_path_len
));
7963 last_path
= this_path
;
7964 last_path_len
= p
- this_path
;
7967 /* If this directory requires any default arguments, we can skip
7968 it. We will already have printed a directory identical to
7969 this one which does not require that default argument. */
7980 goto invalid_select
;
7987 while (*q
!= ' ' && *q
!= ';')
7990 goto invalid_select
;
7995 && default_arg (arg
, q
- arg
))
8010 for (p1
= last_path
; p1
< p
&& *p1
!= ':'; p1
++)
8021 goto invalid_select
;
8029 use_arg
= *p
!= '!';
8034 while (*p
!= ' ' && *p
!= ';')
8037 goto invalid_select
;
8049 /* If there are extra options, print them now. */
8050 if (multilib_extra
&& *multilib_extra
)
8052 int print_at
= TRUE
;
8055 for (q
= multilib_extra
; *q
!= '\0'; q
++)
8076 /* getenv built-in spec function.
8078 Returns the value of the environment variable given by its first
8079 argument, concatenated with the second argument. If the
8080 environment variable is not defined, a fatal error is issued. */
8083 getenv_spec_function (int argc
, const char **argv
)
8093 value
= getenv (argv
[0]);
8095 fatal_error ("environment variable %qs not defined", argv
[0]);
8097 /* We have to escape every character of the environment variable so
8098 they are not interpreted as active spec characters. A
8099 particularly painful case is when we are reading a variable
8100 holding a windows path complete with \ separators. */
8101 len
= strlen (value
) * 2 + strlen (argv
[1]) + 1;
8102 result
= XNEWVAR (char, len
);
8103 for (ptr
= result
; *value
; ptr
+= 2)
8109 strcpy (ptr
, argv
[1]);
8114 /* if-exists built-in spec function.
8116 Checks to see if the file specified by the absolute pathname in
8117 ARGS exists. Returns that pathname if found.
8119 The usual use for this function is to check for a library file
8120 (whose name has been expanded with %s). */
8123 if_exists_spec_function (int argc
, const char **argv
)
8125 /* Must have only one argument. */
8126 if (argc
== 1 && IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
8132 /* if-exists-else built-in spec function.
8134 This is like if-exists, but takes an additional argument which
8135 is returned if the first argument does not exist. */
8138 if_exists_else_spec_function (int argc
, const char **argv
)
8140 /* Must have exactly two arguments. */
8144 if (IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
8150 /* sanitize built-in spec function.
8152 This returns non-NULL, if sanitizing address, thread or
8153 any of the undefined behavior sanitizers. */
8156 sanitize_spec_function (int argc
, const char **argv
)
8161 if (strcmp (argv
[0], "address") == 0)
8162 return (flag_sanitize
& SANITIZE_ADDRESS
) ? "" : NULL
;
8163 if (strcmp (argv
[0], "thread") == 0)
8164 return (flag_sanitize
& SANITIZE_THREAD
) ? "" : NULL
;
8165 if (strcmp (argv
[0], "undefined") == 0)
8166 return (flag_sanitize
& SANITIZE_UNDEFINED
) ? "" : NULL
;
8167 if (strcmp (argv
[0], "leak") == 0)
8168 return ((flag_sanitize
8169 & (SANITIZE_ADDRESS
| SANITIZE_LEAK
| SANITIZE_THREAD
))
8170 == SANITIZE_LEAK
) ? "" : NULL
;
8174 /* replace-outfile built-in spec function.
8176 This looks for the first argument in the outfiles array's name and
8177 replaces it with the second argument. */
8180 replace_outfile_spec_function (int argc
, const char **argv
)
8183 /* Must have exactly two arguments. */
8187 for (i
= 0; i
< n_infiles
; i
++)
8189 if (outfiles
[i
] && !filename_cmp (outfiles
[i
], argv
[0]))
8190 outfiles
[i
] = xstrdup (argv
[1]);
8195 /* remove-outfile built-in spec function.
8197 * This looks for the first argument in the outfiles array's name and
8201 remove_outfile_spec_function (int argc
, const char **argv
)
8204 /* Must have exactly one argument. */
8208 for (i
= 0; i
< n_infiles
; i
++)
8210 if (outfiles
[i
] && !filename_cmp (outfiles
[i
], argv
[0]))
8216 /* Given two version numbers, compares the two numbers.
8217 A version number must match the regular expression
8218 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
8221 compare_version_strings (const char *v1
, const char *v2
)
8226 if (regcomp (&r
, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
8227 REG_EXTENDED
| REG_NOSUB
) != 0)
8229 rresult
= regexec (&r
, v1
, 0, NULL
, 0);
8230 if (rresult
== REG_NOMATCH
)
8231 fatal_error ("invalid version number %qs", v1
);
8232 else if (rresult
!= 0)
8234 rresult
= regexec (&r
, v2
, 0, NULL
, 0);
8235 if (rresult
== REG_NOMATCH
)
8236 fatal_error ("invalid version number %qs", v2
);
8237 else if (rresult
!= 0)
8240 return strverscmp (v1
, v2
);
8244 /* version_compare built-in spec function.
8246 This takes an argument of the following form:
8248 <comparison-op> <arg1> [<arg2>] <switch> <result>
8250 and produces "result" if the comparison evaluates to true,
8251 and nothing if it doesn't.
8253 The supported <comparison-op> values are:
8255 >= true if switch is a later (or same) version than arg1
8257 < true if switch is an earlier version than arg1
8259 >< true if switch is arg1 or later, and earlier than arg2
8260 <> true if switch is earlier than arg1 or is arg2 or later
8262 If the switch is not present, the condition is false unless
8263 the first character of the <comparison-op> is '!'.
8266 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
8267 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
8270 version_compare_spec_function (int argc
, const char **argv
)
8274 const char *switch_value
= NULL
;
8279 fatal_error ("too few arguments to %%:version-compare");
8280 if (argv
[0][0] == '\0')
8282 if ((argv
[0][1] == '<' || argv
[0][1] == '>') && argv
[0][0] != '!')
8284 if (argc
!= nargs
+ 3)
8285 fatal_error ("too many arguments to %%:version-compare");
8287 switch_len
= strlen (argv
[nargs
+ 1]);
8288 for (i
= 0; i
< n_switches
; i
++)
8289 if (!strncmp (switches
[i
].part1
, argv
[nargs
+ 1], switch_len
)
8290 && check_live_switch (i
, switch_len
))
8291 switch_value
= switches
[i
].part1
+ switch_len
;
8293 if (switch_value
== NULL
)
8297 comp1
= compare_version_strings (switch_value
, argv
[1]);
8299 comp2
= compare_version_strings (switch_value
, argv
[2]);
8301 comp2
= -1; /* This value unused. */
8304 switch (argv
[0][0] << 8 | argv
[0][1])
8306 case '>' << 8 | '=':
8307 result
= comp1
>= 0;
8309 case '!' << 8 | '<':
8310 result
= comp1
>= 0 || switch_value
== NULL
;
8315 case '!' << 8 | '>':
8316 result
= comp1
< 0 || switch_value
== NULL
;
8318 case '>' << 8 | '<':
8319 result
= comp1
>= 0 && comp2
< 0;
8321 case '<' << 8 | '>':
8322 result
= comp1
< 0 || comp2
>= 0;
8326 fatal_error ("unknown operator %qs in %%:version-compare", argv
[0]);
8331 return argv
[nargs
+ 2];
8334 /* %:include builtin spec function. This differs from %include in that it
8335 can be nested inside a spec, and thus be conditionalized. It takes
8336 one argument, the filename, and looks for it in the startfile path.
8337 The result is always NULL, i.e. an empty expansion. */
8340 include_spec_function (int argc
, const char **argv
)
8347 file
= find_a_file (&startfile_prefixes
, argv
[0], R_OK
, true);
8348 read_specs (file
? file
: argv
[0], false, false);
8353 /* %:find-file spec function. This function replaces its argument by
8354 the file found through find_file, that is the -print-file-name gcc
8357 find_file_spec_function (int argc
, const char **argv
)
8364 file
= find_file (argv
[0]);
8369 /* %:find-plugindir spec function. This function replaces its argument
8370 by the -iplugindir=<dir> option. `dir' is found through find_file, that
8371 is the -print-file-name gcc program option. */
8373 find_plugindir_spec_function (int argc
, const char **argv ATTRIBUTE_UNUSED
)
8380 option
= concat ("-iplugindir=", find_file ("plugin"), NULL
);
8385 /* %:print-asm-header spec function. Print a banner to say that the
8386 following output is from the assembler. */
8389 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED
,
8390 const char **argv ATTRIBUTE_UNUSED
)
8392 printf (_("Assembler options\n=================\n\n"));
8393 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
8398 /* Get a random number for -frandom-seed */
8400 static unsigned HOST_WIDE_INT
8401 get_random_number (void)
8403 unsigned HOST_WIDE_INT ret
= 0;
8406 fd
= open ("/dev/urandom", O_RDONLY
);
8409 read (fd
, &ret
, sizeof (HOST_WIDE_INT
));
8415 /* Get some more or less random data. */
8416 #ifdef HAVE_GETTIMEOFDAY
8420 gettimeofday (&tv
, NULL
);
8421 ret
= tv
.tv_sec
* 1000 + tv
.tv_usec
/ 1000;
8425 time_t now
= time (NULL
);
8427 if (now
!= (time_t)-1)
8428 ret
= (unsigned) now
;
8432 return ret
^ getpid ();
8435 /* %:compare-debug-dump-opt spec function. Save the last argument,
8436 expected to be the last -fdump-final-insns option, or generate a
8440 compare_debug_dump_opt_spec_function (int arg
,
8441 const char **argv ATTRIBUTE_UNUSED
)
8446 static char random_seed
[HOST_BITS_PER_WIDE_INT
/ 4 + 3];
8449 fatal_error ("too many arguments to %%:compare-debug-dump-opt");
8451 do_spec_2 ("%{fdump-final-insns=*:%*}");
8452 do_spec_1 (" ", 0, NULL
);
8454 if (argbuf
.length () > 0
8455 && strcmp (argv
[argbuf
.length () - 1], "."))
8460 name
= xstrdup (argv
[argbuf
.length () - 1]);
8465 const char *ext
= NULL
;
8467 if (argbuf
.length () > 0)
8469 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
8472 else if (!compare_debug
)
8475 do_spec_2 ("%g.gkd");
8477 do_spec_1 (" ", 0, NULL
);
8479 gcc_assert (argbuf
.length () > 0);
8481 name
= concat (argbuf
.last (), ext
, NULL
);
8483 ret
= concat ("-fdump-final-insns=", name
, NULL
);
8486 which
= compare_debug
< 0;
8487 debug_check_temp_file
[which
] = name
;
8491 unsigned HOST_WIDE_INT value
= get_random_number ();
8493 sprintf (random_seed
, HOST_WIDE_INT_PRINT_HEX
, value
);
8499 ret
= concat ("%{!frandom-seed=*:-frandom-seed=", random_seed
, "} ",
8510 static const char *debug_auxbase_opt
;
8512 /* %:compare-debug-self-opt spec function. Expands to the options
8513 that are to be passed in the second compilation of
8517 compare_debug_self_opt_spec_function (int arg
,
8518 const char **argv ATTRIBUTE_UNUSED
)
8521 fatal_error ("too many arguments to %%:compare-debug-self-opt");
8523 if (compare_debug
>= 0)
8526 do_spec_2 ("%{c|S:%{o*:%*}}");
8527 do_spec_1 (" ", 0, NULL
);
8529 if (argbuf
.length () > 0)
8530 debug_auxbase_opt
= concat ("-auxbase-strip ",
8534 debug_auxbase_opt
= NULL
;
8537 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
8538 %<fdump-final-insns=* -w -S -o %j \
8539 %{!fcompare-debug-second:-fcompare-debug-second} \
8540 ", compare_debug_opt
, NULL
);
8543 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
8544 options that are to be passed in the second compilation of
8545 compare-debug. It expects, as an argument, the basename of the
8546 current input file name, with the .gk suffix appended to it. */
8549 compare_debug_auxbase_opt_spec_function (int arg
,
8556 fatal_error ("too few arguments to %%:compare-debug-auxbase-opt");
8559 fatal_error ("too many arguments to %%:compare-debug-auxbase-opt");
8561 if (compare_debug
>= 0)
8564 len
= strlen (argv
[0]);
8565 if (len
< 3 || strcmp (argv
[0] + len
- 3, ".gk") != 0)
8566 fatal_error ("argument to %%:compare-debug-auxbase-opt "
8567 "does not end in .gk");
8569 if (debug_auxbase_opt
)
8570 return debug_auxbase_opt
;
8572 #define OPT "-auxbase "
8575 name
= (char*) xmalloc (sizeof (OPT
) + len
);
8576 memcpy (name
, OPT
, sizeof (OPT
) - 1);
8577 memcpy (name
+ sizeof (OPT
) - 1, argv
[0], len
);
8578 name
[sizeof (OPT
) - 1 + len
] = '\0';
8585 /* %:pass-through-libs spec function. Finds all -l options and input
8586 file names in the lib spec passed to it, and makes a list of them
8587 prepended with the plugin option to cause them to be passed through
8588 to the final link after all the new object files have been added. */
8591 pass_through_libs_spec_func (int argc
, const char **argv
)
8593 char *prepended
= xstrdup (" ");
8595 /* Shlemiel the painter's algorithm. Innately horrible, but at least
8596 we know that there will never be more than a handful of strings to
8597 concat, and it's only once per run, so it's not worth optimising. */
8598 for (n
= 0; n
< argc
; n
++)
8600 char *old
= prepended
;
8601 /* Anything that isn't an option is a full path to an output
8602 file; pass it through if it ends in '.a'. Among options,
8604 if (argv
[n
][0] == '-' && argv
[n
][1] == 'l')
8606 const char *lopt
= argv
[n
] + 2;
8607 /* Handle both joined and non-joined -l options. If for any
8608 reason there's a trailing -l with no joined or following
8609 arg just discard it. */
8610 if (!*lopt
&& ++n
>= argc
)
8614 prepended
= concat (prepended
, "-plugin-opt=-pass-through=-l",
8617 else if (!strcmp (".a", argv
[n
] + strlen (argv
[n
]) - 2))
8619 prepended
= concat (prepended
, "-plugin-opt=-pass-through=",
8620 argv
[n
], " ", NULL
);
8622 if (prepended
!= old
)
8628 /* %:replace-extension spec function. Replaces the extension of the
8629 first argument with the second argument. */
8632 replace_extension_spec_func (int argc
, const char **argv
)
8640 fatal_error ("too few arguments to %%:replace-extension");
8642 name
= xstrdup (argv
[0]);
8644 for (i
= strlen (name
) - 1; i
>= 0; i
--)
8645 if (IS_DIR_SEPARATOR (name
[i
]))
8648 p
= strrchr (name
+ i
+ 1, '.');
8652 result
= concat (name
, argv
[1], NULL
);
8658 /* Insert backslash before spaces in ORIG (usually a file path), to
8659 avoid being broken by spec parser.
8661 This function is needed as do_spec_1 treats white space (' ' and '\t')
8662 as the end of an argument. But in case of -plugin /usr/gcc install/xxx.so,
8663 the file name should be treated as a single argument rather than being
8664 broken into multiple. Solution is to insert '\\' before the space in a
8667 This function converts and only converts all occurrence of ' '
8668 to '\\' + ' ' and '\t' to '\\' + '\t'. For example:
8672 "a\\ b" -> "a\\\\ b"
8674 orig: input null-terminating string that was allocated by xalloc. The
8675 memory it points to might be freed in this function. Behavior undefined
8676 if ORIG wasn't xalloced or was freed already at entry.
8678 Return: ORIG if no conversion needed. Otherwise a newly allocated string
8679 that was converted from ORIG. */
8682 convert_white_space (char *orig
)
8684 int len
, number_of_space
= 0;
8686 for (len
= 0; orig
[len
]; len
++)
8687 if (orig
[len
] == ' ' || orig
[len
] == '\t') number_of_space
++;
8689 if (number_of_space
)
8691 char *new_spec
= (char *) xmalloc (len
+ number_of_space
+ 1);
8693 for (j
= 0, k
= 0; j
<= len
; j
++, k
++)
8695 if (orig
[j
] == ' ' || orig
[j
] == '\t')
8696 new_spec
[k
++] = '\\';
8697 new_spec
[k
] = orig
[j
];