1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
5 Free Software Foundation, Inc.
7 This file is part of GCC.
9 GCC is free software; you can redistribute it and/or modify it under
10 the terms of the GNU General Public License as published by the Free
11 Software Foundation; either version 3, or (at your option) any later
14 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
15 WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 You should have received a copy of the GNU General Public License
20 along with GCC; see the file COPYING3. If not see
21 <http://www.gnu.org/licenses/>. */
23 /* This program is the user interface to the C compiler and possibly to
24 other compilers. It is used because compilation is a complicated procedure
25 which involves running several programs and passing temporary files between
26 them, forwarding the users switches to those programs selectively,
27 and deleting the temporary files at the end.
29 CC recognizes how to compile each input file by suffixes in the file names.
30 Once it knows which kind of compilation to perform, the procedure for
31 compilation is specified by a string called a "spec". */
35 #include "coretypes.h"
36 #include "multilib.h" /* before tm.h */
39 #if ! defined( SIGCHLD ) && defined( SIGCLD )
40 # define SIGCHLD SIGCLD
47 #include "diagnostic.h"
52 # include <sys/mman.h>
54 /* This is on Solaris. */
55 # include <sys/types.h>
60 # define MAP_FAILED ((void *)-1)
63 /* By default there is no special suffix for target executables. */
64 /* FIXME: when autoconf is fixed, remove the host check - dj */
65 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
66 #define HAVE_TARGET_EXECUTABLE_SUFFIX
69 /* By default there is no special suffix for host executables. */
70 #ifdef HOST_EXECUTABLE_SUFFIX
71 #define HAVE_HOST_EXECUTABLE_SUFFIX
73 #define HOST_EXECUTABLE_SUFFIX ""
76 /* By default, the suffix for target object files is ".o". */
77 #ifdef TARGET_OBJECT_SUFFIX
78 #define HAVE_TARGET_OBJECT_SUFFIX
80 #define TARGET_OBJECT_SUFFIX ".o"
83 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
85 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
86 #ifndef LIBRARY_PATH_ENV
87 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
91 #define kill(p,s) raise(s)
94 /* If a stage of compilation returns an exit status >= 1,
95 compilation of that file ceases. */
97 #define MIN_FATAL_STATUS 1
99 /* Flag set by cppspec.c to 1. */
102 /* Flag set to nonzero if an @file argument has been supplied to gcc. */
103 static bool at_file_supplied;
105 /* Definition of string containing the arguments given to configure. */
106 #include "configargs.h"
108 /* Flag saying to print the command line options understood by gcc and its
111 static int print_help_list;
113 /* Flag saying to print the version of gcc and its sub-processes. */
115 static int print_version;
117 /* Flag indicating whether we should ONLY print the command and
118 arguments (like verbose_flag) without executing the command.
119 Displayed arguments are quoted so that the generated command
120 line is suitable for execution. This is intended for use in
121 shell scripts to capture the driver-generated command line. */
122 static int verbose_only_flag;
124 /* Flag indicating how to print command line options of sub-processes. */
126 static int print_subprocess_help;
128 /* Whether we should report subprocess execution times to a file. */
130 FILE *report_times_to_file = NULL;
132 /* Nonzero means place this string before uses of /, so that include
133 and library files can be found in an alternate location. */
135 #ifdef TARGET_SYSTEM_ROOT
136 static const char *target_system_root = TARGET_SYSTEM_ROOT;
138 static const char *target_system_root = 0;
141 /* Nonzero means pass the updated target_system_root to the compiler. */
143 static int target_system_root_changed;
145 /* Nonzero means append this string to target_system_root. */
147 static const char *target_sysroot_suffix = 0;
149 /* Nonzero means append this string to target_system_root for headers. */
151 static const char *target_sysroot_hdrs_suffix = 0;
153 /* Nonzero means write "temp" files in source directory
154 and use the source file's name in them, and don't delete them. */
156 static enum save_temps {
157 SAVE_TEMPS_NONE, /* no -save-temps */
158 SAVE_TEMPS_CWD, /* -save-temps in current directory */
159 SAVE_TEMPS_OBJ /* -save-temps in object directory */
162 /* Output file to use to get the object directory for -save-temps=obj */
163 static char *save_temps_prefix = 0;
164 static size_t save_temps_length = 0;
166 /* The compiler version. */
168 static const char *compiler_version;
170 /* The target version. */
172 static const char *const spec_version = DEFAULT_TARGET_VERSION;
174 /* The target machine. */
176 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
178 /* Nonzero if cross-compiling.
179 When -b is used, the value comes from the `specs' file. */
181 #ifdef CROSS_DIRECTORY_STRUCTURE
182 static const char *cross_compile = "1";
184 static const char *cross_compile = "0";
187 /* Greatest exit code of sub-processes that has been encountered up to
189 static int greatest_status = 1;
191 /* This is the obstack which we use to allocate many strings. */
193 static struct obstack obstack;
195 /* This is the obstack to build an environment variable to pass to
196 collect2 that describes all of the relevant switches of what to
197 pass the compiler in building the list of pointers to constructors
200 static struct obstack collect_obstack;
202 /* Forward declaration for prototypes. */
206 static void init_spec (void);
207 static void store_arg (const char *, int, int);
208 static void insert_wrapper (const char *);
209 static char *load_specs (const char *);
210 static void read_specs (const char *, int);
211 static void set_spec (const char *, const char *);
212 static struct compiler *lookup_compiler (const char *, size_t, const char *);
213 static char *build_search_list (const struct path_prefix *, const char *,
215 static void xputenv (const char *);
216 static void putenv_from_prefixes (const struct path_prefix *, const char *,
218 static int access_check (const char *, int);
219 static char *find_a_file (const struct path_prefix *, const char *, int, bool);
220 static void add_prefix (struct path_prefix *, const char *, const char *,
222 static void add_sysrooted_prefix (struct path_prefix *, const char *,
223 const char *, int, int, int);
224 static char *skip_whitespace (char *);
225 static void delete_if_ordinary (const char *);
226 static void delete_temp_files (void);
227 static void delete_failure_queue (void);
228 static void clear_failure_queue (void);
229 static int check_live_switch (int, int);
230 static const char *handle_braces (const char *);
231 static inline bool input_suffix_matches (const char *, const char *);
232 static inline bool switch_matches (const char *, const char *, int);
233 static inline void mark_matching_switches (const char *, const char *, int);
234 static inline void process_marked_switches (void);
235 static const char *process_brace_body (const char *, const char *, const char *, int, int);
236 static const struct spec_function *lookup_spec_function (const char *);
237 static const char *eval_spec_function (const char *, const char *);
238 static const char *handle_spec_function (const char *);
239 static char *save_string (const char *, int);
240 static void set_collect_gcc_options (void);
241 static int do_spec_1 (const char *, int, const char *);
242 static int do_spec_2 (const char *);
243 static void do_option_spec (const char *, const char *);
244 static void do_self_spec (const char *);
245 static const char *find_file (const char *);
246 static int is_directory (const char *, bool);
247 static const char *validate_switches (const char *);
248 static void validate_all_switches (void);
249 static inline void validate_switches_from_spec (const char *);
250 static void give_switch (int, int);
251 static int used_arg (const char *, int);
252 static int default_arg (const char *, int);
253 static void set_multilib_dir (void);
254 static void print_multilib_info (void);
255 static void perror_with_name (const char *);
256 static void display_help (void);
257 static void add_preprocessor_option (const char *, int);
258 static void add_assembler_option (const char *, int);
259 static void add_linker_option (const char *, int);
260 static void process_command (unsigned int, struct cl_decoded_option *);
261 static int execute (void);
262 static void alloc_args (void);
263 static void clear_args (void);
264 static void fatal_signal (int);
265 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
266 static void init_gcc_specs (struct obstack *, const char *, const char *,
269 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
270 static const char *convert_filename (const char *, int, int);
273 static const char *getenv_spec_function (int, const char **);
274 static const char *if_exists_spec_function (int, const char **);
275 static const char *if_exists_else_spec_function (int, const char **);
276 static const char *replace_outfile_spec_function (int, const char **);
277 static const char *remove_outfile_spec_function (int, const char **);
278 static const char *version_compare_spec_function (int, const char **);
279 static const char *include_spec_function (int, const char **);
280 static const char *find_file_spec_function (int, const char **);
281 static const char *find_plugindir_spec_function (int, const char **);
282 static const char *print_asm_header_spec_function (int, const char **);
283 static const char *compare_debug_dump_opt_spec_function (int, const char **);
284 static const char *compare_debug_self_opt_spec_function (int, const char **);
285 static const char *compare_debug_auxbase_opt_spec_function (int, const char **);
287 /* The Specs Language
289 Specs are strings containing lines, each of which (if not blank)
290 is made up of a program name, and arguments separated by spaces.
291 The program name must be exact and start from root, since no path
292 is searched and it is unreliable to depend on the current working directory.
293 Redirection of input or output is not supported; the subprograms must
294 accept filenames saying what files to read and write.
296 In addition, the specs can contain %-sequences to substitute variable text
297 or for conditional text. Here is a table of all defined %-sequences.
298 Note that spaces are not generated automatically around the results of
299 expanding these sequences; therefore, you can concatenate them together
300 or with constant text in a single argument.
302 %% substitute one % into the program name or argument.
303 %i substitute the name of the input file being processed.
304 %b substitute the basename of the input file being processed.
305 This is the substring up to (and not including) the last period
306 and not including the directory unless -save-temps was specified
307 to put temporaries in a different location.
308 %B same as %b, but include the file suffix (text after the last period).
310 substitute a file name that has suffix SUFFIX and is chosen
311 once per compilation, and mark the argument a la %d. To reduce
312 exposure to denial-of-service attacks, the file name is now
313 chosen in a way that is hard to predict even when previously
314 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
315 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
316 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
317 had been pre-processed. Previously, %g was simply substituted
318 with a file name chosen once per compilation, without regard
319 to any appended suffix (which was therefore treated just like
320 ordinary text), making such attacks more likely to succeed.
322 like %g, but if -pipe is in effect, expands simply to "-".
324 like %g, but if -pipe is in effect, expands to nothing. (We have both
325 %| and %m to accommodate differences between system assemblers; see
326 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
328 like %g, but generates a new temporary file name even if %uSUFFIX
331 substitutes the last file name generated with %uSUFFIX, generating a
332 new one if there is no such last file name. In the absence of any
333 %uSUFFIX, this is just like %gSUFFIX, except they don't share
334 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
335 would involve the generation of two distinct file names, one
336 for each `%g.s' and another for each `%U.s'. Previously, %U was
337 simply substituted with a file name chosen for the previous %u,
338 without regard to any appended suffix.
340 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
341 writable, and if save-temps is off; otherwise, substitute the name
342 of a temporary file, just like %u. This temporary file is not
343 meant for communication between processes, but rather as a junk
346 substitutes .SUFFIX for the suffixes of a matched switch's args when
347 it is subsequently output with %*. SUFFIX is terminated by the next
349 %d marks the argument containing or following the %d as a
350 temporary file name, so that that file will be deleted if GCC exits
351 successfully. Unlike %g, this contributes no text to the argument.
352 %w marks the argument containing or following the %w as the
353 "output file" of this compilation. This puts the argument
354 into the sequence of arguments that %o will substitute later.
355 %V indicates that this compilation produces no "output file".
357 like %{...} but mark last argument supplied within
358 as a file to be deleted on failure.
359 %o substitutes the names of all the output files, with spaces
360 automatically placed around them. You should write spaces
361 around the %o as well or the results are undefined.
362 %o is for use in the specs for running the linker.
363 Input files whose names have no recognized suffix are not compiled
364 at all, but they are included among the output files, so they will
366 %O substitutes the suffix for object files. Note that this is
367 handled specially when it immediately follows %g, %u, or %U
368 (with or without a suffix argument) because of the need for
369 those to form complete file names. The handling is such that
370 %O is treated exactly as if it had already been substituted,
371 except that %g, %u, and %U do not currently support additional
372 SUFFIX characters following %O as they would following, for
374 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
375 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
376 and -B options) and -imultilib as necessary.
377 %s current argument is the name of a library or startup file of some sort.
378 Search for that file in a standard list of directories
379 and substitute the full name found.
380 %eSTR Print STR as an error message. STR is terminated by a newline.
381 Use this when inconsistent options are detected.
382 %nSTR Print STR as a notice. STR is terminated by a newline.
383 %x{OPTION} Accumulate an option for %X.
384 %X Output the accumulated linker options specified by compilations.
385 %Y Output the accumulated assembler options specified by compilations.
386 %Z Output the accumulated preprocessor options specified by compilations.
387 %a process ASM_SPEC as a spec.
388 This allows config.h to specify part of the spec for running as.
389 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
390 used here. This can be used to run a post-processor after the
391 assembler has done its job.
392 %D Dump out a -L option for each directory in startfile_prefixes.
393 If multilib_dir is set, extra entries are generated with it affixed.
394 %l process LINK_SPEC as a spec.
395 %L process LIB_SPEC as a spec.
396 %G process LIBGCC_SPEC as a spec.
397 %R Output the concatenation of target_system_root and
398 target_sysroot_suffix.
399 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
400 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
401 %C process CPP_SPEC as a spec.
402 %1 process CC1_SPEC as a spec.
403 %2 process CC1PLUS_SPEC as a spec.
404 %* substitute the variable part of a matched option. (See below.)
405 Note that each comma in the substituted string is replaced by
407 %<S remove all occurrences of -S from the command line.
408 Note - this command is position dependent. % commands in the
409 spec string before this one will see -S, % commands in the
410 spec string after this one will not.
411 %<S* remove all occurrences of all switches beginning with -S from the
414 Call the named function FUNCTION, passing it ARGS. ARGS is
415 first processed as a nested spec string, then split into an
416 argument vector in the usual fashion. The function returns
417 a string which is processed as if it had appeared literally
418 as part of the current spec.
419 %{S} substitutes the -S switch, if that switch was given to GCC.
420 If that switch was not specified, this substitutes nothing.
421 Here S is a metasyntactic variable.
422 %{S*} substitutes all the switches specified to GCC whose names start
423 with -S. This is used for -o, -I, etc; switches that take
424 arguments. GCC considers `-o foo' as being one switch whose
425 name starts with `o'. %{o*} would substitute this text,
426 including the space; thus, two arguments would be generated.
427 %{S*&T*} likewise, but preserve order of S and T options (the order
428 of S and T in the spec is not significant). Can be any number
429 of ampersand-separated variables; for each the wild card is
430 optional. Useful for CPP as %{D*&U*&A*}.
432 %{S:X} substitutes X, if the -S switch was given to GCC.
433 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
434 %{S*:X} substitutes X if one or more switches whose names start
435 with -S was given to GCC. Normally X is substituted only
436 once, no matter how many such switches appeared. However,
437 if %* appears somewhere in X, then X will be substituted
438 once for each matching switch, with the %* replaced by the
439 part of that switch that matched the '*'.
440 %{.S:X} substitutes X, if processing a file with suffix S.
441 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
442 %{,S:X} substitutes X, if processing a file which will use spec S.
443 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
445 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
446 combined with '!', '.', ',', and '*' as above binding stronger
448 If %* appears in X, all of the alternatives must be starred, and
449 only the first matching alternative is substituted.
450 %{S:X; if S was given to GCC, substitutes X;
451 T:Y; else if T was given to GCC, substitutes Y;
452 :D} else substitutes D. There can be as many clauses as you need.
453 This may be combined with '.', '!', ',', '|', and '*' as above.
455 %(Spec) processes a specification defined in a specs file as *Spec:
456 %[Spec] as above, but put __ around -D arguments
458 The conditional text X in a %{S:X} or similar construct may contain
459 other nested % constructs or spaces, or even newlines. They are
460 processed as usual, as described above. Trailing white space in X is
461 ignored. White space may also appear anywhere on the left side of the
462 colon in these constructs, except between . or * and the corresponding
465 The -O, -f, -m, and -W switches are handled specifically in these
466 constructs. If another value of -O or the negated form of a -f, -m, or
467 -W switch is found later in the command line, the earlier switch
468 value is ignored, except with {S*} where S is just one letter; this
469 passes all matching options.
471 The character | at the beginning of the predicate text is used to indicate
472 that a command should be piped to the following command, but only if -pipe
475 Note that it is built into GCC which switches take arguments and which
476 do not. You might think it would be useful to generalize this to
477 allow each compiler's spec to say which switches take arguments. But
478 this cannot be done in a consistent fashion. GCC cannot even decide
479 which input files have been specified without knowing which switches
480 take arguments, and it must know which input files to compile in order
481 to tell which compilers to run.
483 GCC also knows implicitly that arguments starting in `-l' are to be
484 treated as compiler output files, and passed to the linker in their
485 proper position among the other output files. */
487 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
489 /* config.h can define ASM_SPEC to provide extra args to the assembler
490 or extra switch-translations. */
495 /* config.h can define ASM_FINAL_SPEC to run a post processor after
496 the assembler has run. */
497 #ifndef ASM_FINAL_SPEC
498 #define ASM_FINAL_SPEC ""
501 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
502 or extra switch-translations. */
507 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
508 or extra switch-translations. */
513 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
514 or extra switch-translations. */
516 #define CC1PLUS_SPEC ""
519 /* config.h can define LINK_SPEC to provide extra args to the linker
520 or extra switch-translations. */
525 /* config.h can define LIB_SPEC to override the default libraries. */
527 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
532 /* XXX: valid only for GNU ld */
533 /* XXX: should exactly match hooks provided by libmudflap.a */
534 #define MFWRAP_SPEC " %{static: %{fmudflap|fmudflapth: \
535 --wrap=malloc --wrap=free --wrap=calloc --wrap=realloc\
536 --wrap=mmap --wrap=munmap --wrap=alloca\
537 } %{fmudflapth: --wrap=pthread_create\
538 }} %{fmudflap|fmudflapth: --wrap=main}"
541 #define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}"
544 /* When using -fsplit-stack we need to wrap pthread_create, in order
545 to initialize the stack guard. We always use wrapping, rather than
546 shared library ordering, and we keep the wrapper function in
547 libgcc. This is not yet a real spec, though it could become one;
548 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping
549 only works with GNU ld and gold. FIXME: This is incompatible with
550 -fmudflap when linking statically, which wants to do its own
552 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}"
554 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
557 #if defined(REAL_LIBGCC_SPEC)
558 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
559 #elif defined(LINK_LIBGCC_SPECIAL_1)
560 /* Have gcc do the search for libgcc.a. */
561 #define LIBGCC_SPEC "libgcc.a%s"
563 #define LIBGCC_SPEC "-lgcc"
567 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
568 #ifndef STARTFILE_SPEC
569 #define STARTFILE_SPEC \
570 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
573 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
575 #define ENDFILE_SPEC ""
579 #define LINKER_NAME "collect2"
582 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
583 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
588 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
590 #ifndef ASM_DEBUG_SPEC
591 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
592 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
593 # define ASM_DEBUG_SPEC \
594 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
595 ? "%{!g0:%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}}" ASM_MAP \
596 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
598 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
599 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
601 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
602 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
606 #ifndef ASM_DEBUG_SPEC
607 # define ASM_DEBUG_SPEC ""
610 /* Here is the spec for running the linker, after compiling all files. */
612 /* This is overridable by the target in case they need to specify the
613 -lgcc and -lc order specially, yet not require them to override all
614 of LINK_COMMAND_SPEC. */
615 #ifndef LINK_GCC_C_SEQUENCE_SPEC
616 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
619 #ifndef LINK_SSP_SPEC
620 #ifdef TARGET_LIBC_PROVIDES_SSP
621 #define LINK_SSP_SPEC "%{fstack-protector:}"
623 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}"
627 #ifndef LINK_PIE_SPEC
629 #define LINK_PIE_SPEC "%{pie:-pie} "
631 #define LINK_PIE_SPEC "%{pie:} "
635 #ifndef LINK_BUILDID_SPEC
636 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
637 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
642 /* -u* was put back because both BSD and SysV seem to support it. */
643 /* %{static:} simply prevents an error message if the target machine
644 doesn't handle -static. */
645 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
646 scripts which exist in user specified directories, or in standard
648 /* We pass any -flto flags on to the linker, which is expected
649 to understand them. In practice, this means it had better be collect2. */
650 #ifndef LINK_COMMAND_SPEC
651 #define LINK_COMMAND_SPEC "\
652 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
654 %{fuse-linker-plugin: \
655 -plugin %(linker_plugin_file) \
656 -plugin-opt=%(lto_wrapper) \
657 -plugin-opt=-fresolution=%u.res \
658 %{static|static-libgcc:-plugin-opt=-pass-through=%(lto_libgcc)} \
659 %{static:-plugin-opt=-pass-through=-lc} \
661 %{flto*:%<fcompare-debug*} \
662 %{flto*} %l " LINK_PIE_SPEC \
663 "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\
664 %{s} %{t} %{u*} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
665 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
666 %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
667 %(mflib) " STACK_SPLIT_SPEC "\
668 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov}\
669 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
670 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
673 #ifndef LINK_LIBGCC_SPEC
674 /* Generate -L options for startfile prefix list. */
675 # define LINK_LIBGCC_SPEC "%D"
678 #ifndef STARTFILE_PREFIX_SPEC
679 # define STARTFILE_PREFIX_SPEC ""
683 # define SYSROOT_SPEC "--sysroot=%R"
686 #ifndef SYSROOT_SUFFIX_SPEC
687 # define SYSROOT_SUFFIX_SPEC ""
690 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
691 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
694 static const char *asm_debug;
695 static const char *cpp_spec = CPP_SPEC;
696 static const char *cc1_spec = CC1_SPEC;
697 static const char *cc1plus_spec = CC1PLUS_SPEC;
698 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
699 static const char *link_ssp_spec = LINK_SSP_SPEC;
700 static const char *asm_spec = ASM_SPEC;
701 static const char *asm_final_spec = ASM_FINAL_SPEC;
702 static const char *link_spec = LINK_SPEC;
703 static const char *lib_spec = LIB_SPEC;
704 static const char *mfwrap_spec = MFWRAP_SPEC;
705 static const char *mflib_spec = MFLIB_SPEC;
706 static const char *link_gomp_spec = "";
707 static const char *libgcc_spec = LIBGCC_SPEC;
708 static const char *endfile_spec = ENDFILE_SPEC;
709 static const char *startfile_spec = STARTFILE_SPEC;
710 static const char *linker_name_spec = LINKER_NAME;
711 static const char *linker_plugin_file_spec = "";
712 static const char *lto_wrapper_spec = "";
713 static const char *lto_gcc_spec = "";
714 static const char *lto_libgcc_spec = "";
715 static const char *link_command_spec = LINK_COMMAND_SPEC;
716 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
717 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
718 static const char *sysroot_spec = SYSROOT_SPEC;
719 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
720 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
722 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
723 There should be no need to override these in target dependent files,
724 but we need to copy them to the specs file so that newer versions
725 of the GCC driver can correctly drive older tool chains with the
726 appropriate -B options. */
728 /* When cpplib handles traditional preprocessing, get rid of this, and
729 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
730 that we default the front end language better. */
731 static const char *trad_capable_cpp =
732 "cc1 -E %{traditional|ftraditional|traditional-cpp:-traditional-cpp}";
734 /* We don't wrap .d files in %W{} since a missing .d file, and
735 therefore no dependency entry, confuses make into thinking a .o
736 file that happens to exist is up-to-date. */
737 static const char *cpp_unique_options =
738 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
739 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
740 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
741 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
742 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
743 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
744 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
745 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
746 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
747 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
750 /* This contains cpp options which are common with cc1_options and are passed
751 only when preprocessing only to avoid duplication. We pass the cc1 spec
752 options to the preprocessor so that it the cc1 spec may manipulate
753 options used to set target flags. Those special target flags settings may
754 in turn cause preprocessor symbols to be defined specially. */
755 static const char *cpp_options =
756 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
757 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
758 %{undef} %{save-temps*:-fpch-preprocess}";
760 /* This contains cpp options which are not passed when the preprocessor
761 output will be used by another program. */
762 static const char *cpp_debug_options = "%{d*}";
764 /* NB: This is shared amongst all front-ends, except for Ada. */
765 static const char *cc1_options =
766 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
767 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
768 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
769 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
770 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
771 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
772 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
773 %{Qn:-fno-ident} %{-help:--help}\
774 %{-target-help:--target-help}\
775 %{-version:--version}\
776 %{-help=*:--help=%*}\
777 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
778 %{fsyntax-only:-o %j} %{-param*}\
779 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\
780 %{coverage:-fprofile-arcs -ftest-coverage}";
782 static const char *asm_options =
783 "%{--target-help:%:print-asm-header()} "
785 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
786 to the assembler equivalents. */
787 "%{v} %{w:-W} %{I*} "
789 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
791 static const char *invoke_as =
792 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
794 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
795 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
799 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
800 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
804 /* Some compilers have limits on line lengths, and the multilib_select
805 and/or multilib_matches strings can be very long, so we build them at
807 static struct obstack multilib_obstack;
808 static const char *multilib_select;
809 static const char *multilib_matches;
810 static const char *multilib_defaults;
811 static const char *multilib_exclusions;
813 /* Check whether a particular argument is a default argument. */
815 #ifndef MULTILIB_DEFAULTS
816 #define MULTILIB_DEFAULTS { "" }
819 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
821 #ifndef DRIVER_SELF_SPECS
822 #define DRIVER_SELF_SPECS ""
825 /* Adding -fopenmp should imply pthreads. This is particularly important
826 for targets that use different start files and suchlike. */
827 #ifndef GOMP_SELF_SPECS
828 #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}"
831 static const char *const driver_self_specs[] = {
832 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
833 DRIVER_SELF_SPECS, CONFIGURE_SPECS, GOMP_SELF_SPECS
836 #ifndef OPTION_DEFAULT_SPECS
837 #define OPTION_DEFAULT_SPECS { "", "" }
846 static const struct default_spec
847 option_default_specs[] = { OPTION_DEFAULT_SPECS };
851 struct user_specs *next;
852 const char *filename;
855 static struct user_specs *user_specs_head, *user_specs_tail;
858 /* Record the mapping from file suffixes for compilation specs. */
862 const char *suffix; /* Use this compiler for input files
863 whose names end in this suffix. */
865 const char *spec; /* To use this compiler, run this spec. */
867 const char *cpp_spec; /* If non-NULL, substitute this spec
868 for `%C', rather than the usual
870 const int combinable; /* If nonzero, compiler can deal with
871 multiple source files at once (IMA). */
872 const int needs_preprocessing; /* If nonzero, source files need to
873 be run through a preprocessor. */
876 /* Pointer to a vector of `struct compiler' that gives the spec for
877 compiling a file, based on its suffix.
878 A file that does not end in any of these suffixes will be passed
879 unchanged to the loader and nothing else will be done to it.
881 An entry containing two 0s is used to terminate the vector.
883 If multiple entries match a file, the last matching one is used. */
885 static struct compiler *compilers;
887 /* Number of entries in `compilers', not counting the null terminator. */
889 static int n_compilers;
891 /* The default list of file name suffixes and their compilation specs. */
893 static const struct compiler default_compilers[] =
895 /* Add lists of suffixes of known languages here. If those languages
896 were not present when we built the driver, we will hit these copies
897 and be given a more meaningful error than "file not used since
898 linking is not done". */
899 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
900 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
901 {".mii", "#Objective-C++", 0, 0, 0},
902 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
903 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
904 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
905 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
906 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
907 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
908 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
909 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
910 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
911 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
912 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
913 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
914 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
915 {".r", "#Ratfor", 0, 0, 0},
916 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
917 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
918 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
919 /* Next come the entries for C. */
920 {".c", "@c", 0, 0, 1},
922 /* cc1 has an integrated ISO C preprocessor. We should invoke the
923 external preprocessor if -save-temps is given. */
924 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
926 %{traditional|ftraditional:\
927 %eGNU C no longer supports -traditional without -E}\
928 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
929 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
930 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
932 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
933 cc1 %(cpp_unique_options) %(cc1_options)}}}\
934 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
936 "%{!E:%e-E or -x required when input is from standard input}\
937 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
938 {".h", "@c-header", 0, 0, 0},
940 /* cc1 has an integrated ISO C preprocessor. We should invoke the
941 external preprocessor if -save-temps is given. */
942 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
944 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
945 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
946 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
948 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
949 %W{o*:--output-pch=%*}}%V}\
950 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
951 cc1 %(cpp_unique_options) %(cc1_options)\
952 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
953 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
954 {".i", "@cpp-output", 0, 0, 0},
956 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 1, 0},
957 {".s", "@assembler", 0, 1, 0},
959 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 1, 0},
960 {".sx", "@assembler-with-cpp", 0, 1, 0},
961 {".S", "@assembler-with-cpp", 0, 1, 0},
962 {"@assembler-with-cpp",
963 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
964 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
965 %{E|M|MM:%(cpp_debug_options)}\
966 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
967 as %(asm_debug) %(asm_options) %|.s %A }}}}"
969 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
970 %{E|M|MM:%(cpp_debug_options)}\
971 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
972 as %(asm_debug) %(asm_options) %m.s %A }}}}"
977 /* Mark end of table. */
981 /* Number of elements in default_compilers, not counting the terminator. */
983 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
985 /* A vector of options to give to the linker.
986 These options are accumulated by %x,
987 and substituted into the linker command with %X. */
988 static int n_linker_options;
989 static char **linker_options;
991 /* A vector of options to give to the assembler.
992 These options are accumulated by -Wa,
993 and substituted into the assembler command with %Y. */
994 static int n_assembler_options;
995 static char **assembler_options;
997 /* A vector of options to give to the preprocessor.
998 These options are accumulated by -Wp,
999 and substituted into the preprocessor command with %Z. */
1000 static int n_preprocessor_options;
1001 static char **preprocessor_options;
1004 skip_whitespace (char *p)
1008 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1009 be considered whitespace. */
1010 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1012 else if (*p == '\n' || *p == ' ' || *p == '\t')
1026 /* Structures to keep track of prefixes to try when looking for files. */
1030 const char *prefix; /* String to prepend to the path. */
1031 struct prefix_list *next; /* Next in linked list. */
1032 int require_machine_suffix; /* Don't use without machine_suffix. */
1033 /* 2 means try both machine_suffix and just_machine_suffix. */
1034 int priority; /* Sort key - priority within list. */
1035 int os_multilib; /* 1 if OS multilib scheme should be used,
1036 0 for GCC multilib scheme. */
1041 struct prefix_list *plist; /* List of prefixes to try */
1042 int max_len; /* Max length of a prefix in PLIST */
1043 const char *name; /* Name of this list (used in config stuff) */
1046 /* List of prefixes to try when looking for executables. */
1048 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1050 /* List of prefixes to try when looking for startup (crt0) files. */
1052 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1054 /* List of prefixes to try when looking for include files. */
1056 static struct path_prefix include_prefixes = { 0, 0, "include" };
1058 /* Suffix to attach to directories searched for commands.
1059 This looks like `MACHINE/VERSION/'. */
1061 static const char *machine_suffix = 0;
1063 /* Suffix to attach to directories searched for commands.
1064 This is just `MACHINE/'. */
1066 static const char *just_machine_suffix = 0;
1068 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1070 static const char *gcc_exec_prefix;
1072 /* Adjusted value of standard_libexec_prefix. */
1074 static const char *gcc_libexec_prefix;
1076 /* Default prefixes to attach to command names. */
1078 #ifndef STANDARD_STARTFILE_PREFIX_1
1079 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1081 #ifndef STANDARD_STARTFILE_PREFIX_2
1082 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1085 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1086 #undef MD_EXEC_PREFIX
1087 #undef MD_STARTFILE_PREFIX
1088 #undef MD_STARTFILE_PREFIX_1
1091 /* If no prefixes defined, use the null string, which will disable them. */
1092 #ifndef MD_EXEC_PREFIX
1093 #define MD_EXEC_PREFIX ""
1095 #ifndef MD_STARTFILE_PREFIX
1096 #define MD_STARTFILE_PREFIX ""
1098 #ifndef MD_STARTFILE_PREFIX_1
1099 #define MD_STARTFILE_PREFIX_1 ""
1102 /* These directories are locations set at configure-time based on the
1103 --prefix option provided to configure. Their initializers are
1104 defined in Makefile.in. These paths are not *directly* used when
1105 gcc_exec_prefix is set because, in that case, we know where the
1106 compiler has been installed, and use paths relative to that
1107 location instead. */
1108 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1109 static const char *const standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1110 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1111 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1113 /* For native compilers, these are well-known paths containing
1114 components that may be provided by the system. For cross
1115 compilers, these paths are not used. */
1116 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1117 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1118 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1119 static const char *const standard_startfile_prefix_1
1120 = STANDARD_STARTFILE_PREFIX_1;
1121 static const char *const standard_startfile_prefix_2
1122 = STANDARD_STARTFILE_PREFIX_2;
1124 /* A relative path to be used in finding the location of tools
1125 relative to the driver. */
1126 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1128 /* Subdirectory to use for locating libraries. Set by
1129 set_multilib_dir based on the compilation options. */
1131 static const char *multilib_dir;
1133 /* Subdirectory to use for locating libraries in OS conventions. Set by
1134 set_multilib_dir based on the compilation options. */
1136 static const char *multilib_os_dir;
1138 /* Structure to keep track of the specs that have been defined so far.
1139 These are accessed using %(specname) or %[specname] in a compiler
1144 /* The following 2 fields must be first */
1145 /* to allow EXTRA_SPECS to be initialized */
1146 const char *name; /* name of the spec. */
1147 const char *ptr; /* available ptr if no static pointer */
1149 /* The following fields are not initialized */
1150 /* by EXTRA_SPECS */
1151 const char **ptr_spec; /* pointer to the spec itself. */
1152 struct spec_list *next; /* Next spec in linked list. */
1153 int name_len; /* length of the name */
1154 int alloc_p; /* whether string was allocated */
1157 #define INIT_STATIC_SPEC(NAME,PTR) \
1158 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1160 /* List of statically defined specs. */
1161 static struct spec_list static_specs[] =
1163 INIT_STATIC_SPEC ("asm", &asm_spec),
1164 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1165 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1166 INIT_STATIC_SPEC ("asm_options", &asm_options),
1167 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1168 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1169 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1170 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1171 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1172 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1173 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1174 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1175 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1176 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1177 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec),
1178 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1179 INIT_STATIC_SPEC ("link", &link_spec),
1180 INIT_STATIC_SPEC ("lib", &lib_spec),
1181 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec),
1182 INIT_STATIC_SPEC ("mflib", &mflib_spec),
1183 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec),
1184 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1185 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1186 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1187 INIT_STATIC_SPEC ("version", &compiler_version),
1188 INIT_STATIC_SPEC ("multilib", &multilib_select),
1189 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1190 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1191 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1192 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1193 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1194 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1195 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec),
1196 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec),
1197 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec),
1198 INIT_STATIC_SPEC ("lto_libgcc", <o_libgcc_spec),
1199 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1200 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1201 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1202 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1203 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1204 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec),
1205 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1206 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1209 #ifdef EXTRA_SPECS /* additional specs needed */
1210 /* Structure to keep track of just the first two args of a spec_list.
1211 That is all that the EXTRA_SPECS macro gives us. */
1214 const char *const name;
1215 const char *const ptr;
1218 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1219 static struct spec_list *extra_specs = (struct spec_list *) 0;
1222 /* List of dynamically allocates specs that have been defined so far. */
1224 static struct spec_list *specs = (struct spec_list *) 0;
1226 /* List of static spec functions. */
1228 static const struct spec_function static_spec_functions[] =
1230 { "getenv", getenv_spec_function },
1231 { "if-exists", if_exists_spec_function },
1232 { "if-exists-else", if_exists_else_spec_function },
1233 { "replace-outfile", replace_outfile_spec_function },
1234 { "remove-outfile", remove_outfile_spec_function },
1235 { "version-compare", version_compare_spec_function },
1236 { "include", include_spec_function },
1237 { "find-file", find_file_spec_function },
1238 { "find-plugindir", find_plugindir_spec_function },
1239 { "print-asm-header", print_asm_header_spec_function },
1240 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function },
1241 { "compare-debug-self-opt", compare_debug_self_opt_spec_function },
1242 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function },
1243 #ifdef EXTRA_SPEC_FUNCTIONS
1244 EXTRA_SPEC_FUNCTIONS
1249 static int processing_spec_function;
1251 /* Add appropriate libgcc specs to OBSTACK, taking into account
1252 various permutations of -shared-libgcc, -shared, and such. */
1254 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1256 #ifndef USE_LD_AS_NEEDED
1257 #define USE_LD_AS_NEEDED 0
1261 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1262 const char *static_name, const char *eh_name)
1266 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}"
1267 "%{!static:%{!static-libgcc:"
1268 #if USE_LD_AS_NEEDED
1269 "%{!shared-libgcc:",
1270 static_name, " --as-needed ", shared_name, " --no-as-needed"
1273 shared_name, "%{!shared: ", static_name, "}"
1277 "%{!shared-libgcc:", static_name, " ", eh_name, "}"
1278 "%{shared-libgcc:", shared_name, " ", static_name, "}"
1282 "%{shared-libgcc:", shared_name, "}"
1283 "%{!shared-libgcc:", static_name, "}"
1286 "%{shared:", shared_name, "}"
1291 obstack_grow (obstack, buf, strlen (buf));
1294 #endif /* ENABLE_SHARED_LIBGCC */
1296 /* Initialize the specs lookup routines. */
1301 struct spec_list *next = (struct spec_list *) 0;
1302 struct spec_list *sl = (struct spec_list *) 0;
1306 return; /* Already initialized. */
1309 fnotice (stderr, "Using built-in specs.\n");
1312 extra_specs = XCNEWVEC (struct spec_list, ARRAY_SIZE (extra_specs_1));
1314 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1316 sl = &extra_specs[i];
1317 sl->name = extra_specs_1[i].name;
1318 sl->ptr = extra_specs_1[i].ptr;
1320 sl->name_len = strlen (sl->name);
1321 sl->ptr_spec = &sl->ptr;
1326 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1328 sl = &static_specs[i];
1333 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1334 /* ??? If neither -shared-libgcc nor --static-libgcc was
1335 seen, then we should be making an educated guess. Some proposed
1336 heuristics for ELF include:
1338 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1339 program will be doing dynamic loading, which will likely
1340 need the shared libgcc.
1342 (2) If "-ldl", then it's also a fair bet that we're doing
1345 (3) For each ET_DYN we're linking against (either through -lfoo
1346 or /some/path/foo.so), check to see whether it or one of
1347 its dependencies depends on a shared libgcc.
1351 If the runtime is fixed to look for program headers instead
1352 of calling __register_frame_info at all, for each object,
1353 use the shared libgcc if any EH symbol referenced.
1355 If crtstuff is fixed to not invoke __register_frame_info
1356 automatically, for each object, use the shared libgcc if
1357 any non-empty unwind section found.
1359 Doing any of this probably requires invoking an external program to
1360 do the actual object file scanning. */
1362 const char *p = libgcc_spec;
1365 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1366 when given the proper command line arguments. */
1369 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1371 init_gcc_specs (&obstack,
1373 #ifdef USE_LIBUNWIND_EXCEPTIONS
1379 #ifdef USE_LIBUNWIND_EXCEPTIONS
1380 # ifdef HAVE_LD_STATIC_DYNAMIC
1381 " %{!static:-Bstatic} -lunwind %{!static:-Bdynamic}"
1391 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1393 /* Ug. We don't know shared library extensions. Hope that
1394 systems that use this form don't do shared libraries. */
1395 init_gcc_specs (&obstack,
1399 #ifdef USE_LIBUNWIND_EXCEPTIONS
1408 obstack_1grow (&obstack, *p);
1409 in_sep = (*p == ' ');
1414 obstack_1grow (&obstack, '\0');
1415 libgcc_spec = XOBFINISH (&obstack, const char *);
1418 #ifdef USE_AS_TRADITIONAL_FORMAT
1419 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1421 static const char tf[] = "--traditional-format ";
1422 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1423 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1424 asm_spec = XOBFINISH (&obstack, const char *);
1428 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC
1429 # ifdef LINK_BUILDID_SPEC
1430 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1431 obstack_grow (&obstack, LINK_BUILDID_SPEC, sizeof(LINK_BUILDID_SPEC) - 1);
1433 # ifdef LINK_EH_SPEC
1434 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1435 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1437 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1438 link_spec = XOBFINISH (&obstack, const char *);
1444 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1445 removed; If the spec starts with a + then SPEC is added to the end of the
1449 set_spec (const char *name, const char *spec)
1451 struct spec_list *sl;
1452 const char *old_spec;
1453 int name_len = strlen (name);
1456 /* If this is the first call, initialize the statically allocated specs. */
1459 struct spec_list *next = (struct spec_list *) 0;
1460 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1462 sl = &static_specs[i];
1469 /* See if the spec already exists. */
1470 for (sl = specs; sl; sl = sl->next)
1471 if (name_len == sl->name_len && !strcmp (sl->name, name))
1476 /* Not found - make it. */
1477 sl = XNEW (struct spec_list);
1478 sl->name = xstrdup (name);
1479 sl->name_len = name_len;
1480 sl->ptr_spec = &sl->ptr;
1482 *(sl->ptr_spec) = "";
1487 old_spec = *(sl->ptr_spec);
1488 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1489 ? concat (old_spec, spec + 1, NULL)
1494 fnotice (stderr, "Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1497 /* Free the old spec. */
1498 if (old_spec && sl->alloc_p)
1499 free (CONST_CAST(char *, old_spec));
1504 /* Accumulate a command (program name and args), and run it. */
1506 /* Vector of pointers to arguments in the current line of specifications. */
1508 static const char **argbuf;
1510 /* Number of elements allocated in argbuf. */
1512 static int argbuf_length;
1514 /* Number of elements in argbuf currently in use (containing args). */
1516 static int argbuf_index;
1518 /* Position in the argbuf array containing the name of the output file
1519 (the value associated with the "-o" flag). */
1521 static int have_o_argbuf_index = 0;
1523 /* Were the options -c, -S or -E passed. */
1524 static int have_c = 0;
1526 /* Was the option -o passed. */
1527 static int have_o = 0;
1529 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1530 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1533 static struct temp_name {
1534 const char *suffix; /* suffix associated with the code. */
1535 int length; /* strlen (suffix). */
1536 int unique; /* Indicates whether %g or %u/%U was used. */
1537 const char *filename; /* associated filename. */
1538 int filename_length; /* strlen (filename). */
1539 struct temp_name *next;
1542 /* Number of commands executed so far. */
1544 static int execution_count;
1546 /* Number of commands that exited with a signal. */
1548 static int signal_count;
1550 /* Allocate the argument vector. */
1556 argbuf = XNEWVEC (const char *, argbuf_length);
1559 /* Clear out the vector of arguments (after a command is executed). */
1567 /* Add one argument to the vector at the end.
1568 This is done when a space is seen or at the end of the line.
1569 If DELETE_ALWAYS is nonzero, the arg is a filename
1570 and the file should be deleted eventually.
1571 If DELETE_FAILURE is nonzero, the arg is a filename
1572 and the file should be deleted if this compilation fails. */
1575 store_arg (const char *arg, int delete_always, int delete_failure)
1577 if (argbuf_index + 1 == argbuf_length)
1578 argbuf = XRESIZEVEC (const char *, argbuf, (argbuf_length *= 2));
1580 argbuf[argbuf_index++] = arg;
1581 argbuf[argbuf_index] = 0;
1583 if (strcmp (arg, "-o") == 0)
1584 have_o_argbuf_index = argbuf_index;
1585 if (delete_always || delete_failure)
1588 /* If the temporary file we should delete is specified as
1589 part of a joined argument extract the filename. */
1591 && (p = strrchr (arg, '=')))
1593 record_temp_file (arg, delete_always, delete_failure);
1597 /* Load specs from a file name named FILENAME, replacing occurrences of
1598 various different types of line-endings, \r\n, \n\r and just \r, with
1602 load_specs (const char *filename)
1606 struct stat statbuf;
1613 fnotice (stderr, "Reading specs from %s\n", filename);
1615 /* Open and stat the file. */
1616 desc = open (filename, O_RDONLY, 0);
1618 pfatal_with_name (filename);
1619 if (stat (filename, &statbuf) < 0)
1620 pfatal_with_name (filename);
1622 /* Read contents of file into BUFFER. */
1623 buffer = XNEWVEC (char, statbuf.st_size + 1);
1624 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1626 pfatal_with_name (filename);
1627 buffer[readlen] = 0;
1630 specs = XNEWVEC (char, readlen + 1);
1632 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1638 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1640 else if (*(buffer_p + 1) == '\n') /* \r\n */
1654 /* Read compilation specs from a file named FILENAME,
1655 replacing the default ones.
1657 A suffix which starts with `*' is a definition for
1658 one of the machine-specific sub-specs. The "suffix" should be
1659 *asm, *cc1, *cpp, *link, *startfile, etc.
1660 The corresponding spec is stored in asm_spec, etc.,
1661 rather than in the `compilers' vector.
1663 Anything invalid in the file is a fatal error. */
1666 read_specs (const char *filename, int main_p)
1671 buffer = load_specs (filename);
1673 /* Scan BUFFER for specs, putting them in the vector. */
1679 char *in, *out, *p1, *p2, *p3;
1681 /* Advance P in BUFFER to the next nonblank nocomment line. */
1682 p = skip_whitespace (p);
1686 /* Is this a special command that starts with '%'? */
1687 /* Don't allow this for the main specs file, since it would
1688 encourage people to overwrite it. */
1689 if (*p == '%' && !main_p)
1692 while (*p && *p != '\n')
1698 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1699 && (p1[sizeof "%include" - 1] == ' '
1700 || p1[sizeof "%include" - 1] == '\t'))
1704 p1 += sizeof ("%include");
1705 while (*p1 == ' ' || *p1 == '\t')
1708 if (*p1++ != '<' || p[-2] != '>')
1709 fatal_error ("specs %%include syntax malformed after "
1711 (long) (p1 - buffer + 1));
1714 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1715 read_specs (new_filename ? new_filename : p1, FALSE);
1718 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1719 && (p1[sizeof "%include_noerr" - 1] == ' '
1720 || p1[sizeof "%include_noerr" - 1] == '\t'))
1724 p1 += sizeof "%include_noerr";
1725 while (*p1 == ' ' || *p1 == '\t')
1728 if (*p1++ != '<' || p[-2] != '>')
1729 fatal_error ("specs %%include syntax malformed after "
1731 (long) (p1 - buffer + 1));
1734 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1736 read_specs (new_filename, FALSE);
1737 else if (verbose_flag)
1738 fnotice (stderr, "could not find specs file %s\n", p1);
1741 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1742 && (p1[sizeof "%rename" - 1] == ' '
1743 || p1[sizeof "%rename" - 1] == '\t'))
1746 struct spec_list *sl;
1747 struct spec_list *newsl;
1749 /* Get original name. */
1750 p1 += sizeof "%rename";
1751 while (*p1 == ' ' || *p1 == '\t')
1754 if (! ISALPHA ((unsigned char) *p1))
1755 fatal_error ("specs %%rename syntax malformed after "
1757 (long) (p1 - buffer));
1760 while (*p2 && !ISSPACE ((unsigned char) *p2))
1763 if (*p2 != ' ' && *p2 != '\t')
1764 fatal_error ("specs %%rename syntax malformed after "
1766 (long) (p2 - buffer));
1770 while (*p2 == ' ' || *p2 == '\t')
1773 if (! ISALPHA ((unsigned char) *p2))
1774 fatal_error ("specs %%rename syntax malformed after "
1776 (long) (p2 - buffer));
1778 /* Get new spec name. */
1780 while (*p3 && !ISSPACE ((unsigned char) *p3))
1784 fatal_error ("specs %%rename syntax malformed after "
1786 (long) (p3 - buffer));
1789 for (sl = specs; sl; sl = sl->next)
1790 if (name_len == sl->name_len && !strcmp (sl->name, p1))
1794 fatal_error ("specs %s spec was not found to be renamed", p1);
1796 if (strcmp (p1, p2) == 0)
1799 for (newsl = specs; newsl; newsl = newsl->next)
1800 if (strcmp (newsl->name, p2) == 0)
1801 fatal_error ("%s: attempt to rename spec %qs to "
1802 "already defined spec %qs",
1807 fnotice (stderr, "rename spec %s to %s\n", p1, p2);
1809 fnotice (stderr, "spec is '%s'\n\n", *(sl->ptr_spec));
1813 set_spec (p2, *(sl->ptr_spec));
1815 free (CONST_CAST (char *, *(sl->ptr_spec)));
1817 *(sl->ptr_spec) = "";
1822 fatal_error ("specs unknown %% command after %ld characters",
1823 (long) (p1 - buffer));
1826 /* Find the colon that should end the suffix. */
1828 while (*p1 && *p1 != ':' && *p1 != '\n')
1831 /* The colon shouldn't be missing. */
1833 fatal_error ("specs file malformed after %ld characters",
1834 (long) (p1 - buffer));
1836 /* Skip back over trailing whitespace. */
1838 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
1841 /* Copy the suffix to a string. */
1842 suffix = save_string (p, p2 - p);
1843 /* Find the next line. */
1844 p = skip_whitespace (p1 + 1);
1846 fatal_error ("specs file malformed after %ld characters",
1847 (long) (p - buffer));
1850 /* Find next blank line or end of string. */
1851 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
1854 /* Specs end at the blank line and do not include the newline. */
1855 spec = save_string (p, p1 - p);
1858 /* Delete backslash-newline sequences from the spec. */
1863 if (in[0] == '\\' && in[1] == '\n')
1865 else if (in[0] == '#')
1866 while (*in && *in != '\n')
1874 if (suffix[0] == '*')
1876 if (! strcmp (suffix, "*link_command"))
1877 link_command_spec = spec;
1879 set_spec (suffix + 1, spec);
1883 /* Add this pair to the vector. */
1885 = XRESIZEVEC (struct compiler, compilers, n_compilers + 2);
1887 compilers[n_compilers].suffix = suffix;
1888 compilers[n_compilers].spec = spec;
1890 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
1894 link_command_spec = spec;
1897 if (link_command_spec == 0)
1898 fatal_error ("spec file has no spec for linking");
1901 /* Record the names of temporary files we tell compilers to write,
1902 and delete them at the end of the run. */
1904 /* This is the common prefix we use to make temp file names.
1905 It is chosen once for each run of this program.
1906 It is substituted into a spec by %g or %j.
1907 Thus, all temp file names contain this prefix.
1908 In practice, all temp file names start with this prefix.
1910 This prefix comes from the envvar TMPDIR if it is defined;
1911 otherwise, from the P_tmpdir macro if that is defined;
1912 otherwise, in /usr/tmp or /tmp;
1913 or finally the current directory if all else fails. */
1915 static const char *temp_filename;
1917 /* Length of the prefix. */
1919 static int temp_filename_length;
1921 /* Define the list of temporary files to delete. */
1926 struct temp_file *next;
1929 /* Queue of files to delete on success or failure of compilation. */
1930 static struct temp_file *always_delete_queue;
1931 /* Queue of files to delete on failure of compilation. */
1932 static struct temp_file *failure_delete_queue;
1934 /* Record FILENAME as a file to be deleted automatically.
1935 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
1936 otherwise delete it in any case.
1937 FAIL_DELETE nonzero means delete it if a compilation step fails;
1938 otherwise delete it in any case. */
1941 record_temp_file (const char *filename, int always_delete, int fail_delete)
1943 char *const name = xstrdup (filename);
1947 struct temp_file *temp;
1948 for (temp = always_delete_queue; temp; temp = temp->next)
1949 if (! strcmp (name, temp->name))
1952 temp = XNEW (struct temp_file);
1953 temp->next = always_delete_queue;
1955 always_delete_queue = temp;
1962 struct temp_file *temp;
1963 for (temp = failure_delete_queue; temp; temp = temp->next)
1964 if (! strcmp (name, temp->name))
1967 temp = XNEW (struct temp_file);
1968 temp->next = failure_delete_queue;
1970 failure_delete_queue = temp;
1976 /* Delete all the temporary files whose names we previously recorded. */
1978 #ifndef DELETE_IF_ORDINARY
1979 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
1982 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
1983 if (unlink (NAME) < 0) \
1985 perror_with_name (NAME); \
1990 delete_if_ordinary (const char *name)
1996 printf ("Delete %s? (y or n) ", name);
2000 while ((c = getchar ()) != '\n' && c != EOF)
2003 if (i == 'y' || i == 'Y')
2005 DELETE_IF_ORDINARY (name, st, verbose_flag);
2009 delete_temp_files (void)
2011 struct temp_file *temp;
2013 for (temp = always_delete_queue; temp; temp = temp->next)
2014 delete_if_ordinary (temp->name);
2015 always_delete_queue = 0;
2018 /* Delete all the files to be deleted on error. */
2021 delete_failure_queue (void)
2023 struct temp_file *temp;
2025 for (temp = failure_delete_queue; temp; temp = temp->next)
2026 delete_if_ordinary (temp->name);
2030 clear_failure_queue (void)
2032 failure_delete_queue = 0;
2035 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2037 If DO_MULTI is true iterate over the paths twice, first with multilib
2038 suffix then without, otherwise iterate over the paths once without
2039 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2040 to avoid visiting the same path twice, but we could do better. For
2041 instance, /usr/lib/../lib is considered different from /usr/lib.
2042 At least EXTRA_SPACE chars past the end of the path passed to
2043 CALLBACK are available for use by the callback.
2044 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2046 Returns the value returned by CALLBACK. */
2049 for_each_path (const struct path_prefix *paths,
2052 void *(*callback) (char *, void *),
2053 void *callback_info)
2055 struct prefix_list *pl;
2056 const char *multi_dir = NULL;
2057 const char *multi_os_dir = NULL;
2058 const char *multi_suffix;
2059 const char *just_multi_suffix;
2062 bool skip_multi_dir = false;
2063 bool skip_multi_os_dir = false;
2065 multi_suffix = machine_suffix;
2066 just_multi_suffix = just_machine_suffix;
2067 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0)
2069 multi_dir = concat (multilib_dir, dir_separator_str, NULL);
2070 multi_suffix = concat (multi_suffix, multi_dir, NULL);
2071 just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL);
2073 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0)
2074 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL);
2078 size_t multi_dir_len = 0;
2079 size_t multi_os_dir_len = 0;
2081 size_t just_suffix_len;
2085 multi_dir_len = strlen (multi_dir);
2087 multi_os_dir_len = strlen (multi_os_dir);
2088 suffix_len = strlen (multi_suffix);
2089 just_suffix_len = strlen (just_multi_suffix);
2093 len = paths->max_len + extra_space + 1;
2094 if (suffix_len > multi_os_dir_len)
2097 len += multi_os_dir_len;
2098 path = XNEWVEC (char, len);
2101 for (pl = paths->plist; pl != 0; pl = pl->next)
2103 len = strlen (pl->prefix);
2104 memcpy (path, pl->prefix, len);
2106 /* Look first in MACHINE/VERSION subdirectory. */
2107 if (!skip_multi_dir)
2109 memcpy (path + len, multi_suffix, suffix_len + 1);
2110 ret = callback (path, callback_info);
2115 /* Some paths are tried with just the machine (ie. target)
2116 subdir. This is used for finding as, ld, etc. */
2118 && pl->require_machine_suffix == 2)
2120 memcpy (path + len, just_multi_suffix, just_suffix_len + 1);
2121 ret = callback (path, callback_info);
2126 /* Now try the base path. */
2127 if (!pl->require_machine_suffix
2128 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir))
2130 const char *this_multi;
2131 size_t this_multi_len;
2133 if (pl->os_multilib)
2135 this_multi = multi_os_dir;
2136 this_multi_len = multi_os_dir_len;
2140 this_multi = multi_dir;
2141 this_multi_len = multi_dir_len;
2145 memcpy (path + len, this_multi, this_multi_len + 1);
2149 ret = callback (path, callback_info);
2157 if (multi_dir == NULL && multi_os_dir == NULL)
2160 /* Run through the paths again, this time without multilibs.
2161 Don't repeat any we have already seen. */
2164 free (CONST_CAST (char *, multi_dir));
2166 free (CONST_CAST (char *, multi_suffix));
2167 multi_suffix = machine_suffix;
2168 free (CONST_CAST (char *, just_multi_suffix));
2169 just_multi_suffix = just_machine_suffix;
2172 skip_multi_dir = true;
2175 free (CONST_CAST (char *, multi_os_dir));
2176 multi_os_dir = NULL;
2179 skip_multi_os_dir = true;
2184 free (CONST_CAST (char *, multi_dir));
2185 free (CONST_CAST (char *, multi_suffix));
2186 free (CONST_CAST (char *, just_multi_suffix));
2189 free (CONST_CAST (char *, multi_os_dir));
2195 /* Callback for build_search_list. Adds path to obstack being built. */
2197 struct add_to_obstack_info {
2204 add_to_obstack (char *path, void *data)
2206 struct add_to_obstack_info *info = (struct add_to_obstack_info *) data;
2208 if (info->check_dir && !is_directory (path, false))
2211 if (!info->first_time)
2212 obstack_1grow (info->ob, PATH_SEPARATOR);
2214 obstack_grow (info->ob, path, strlen (path));
2216 info->first_time = false;
2220 /* Add or change the value of an environment variable, outputting the
2221 change to standard error if in verbose mode. */
2223 xputenv (const char *string)
2226 fnotice (stderr, "%s\n", string);
2227 putenv (CONST_CAST (char *, string));
2230 /* Build a list of search directories from PATHS.
2231 PREFIX is a string to prepend to the list.
2232 If CHECK_DIR_P is true we ensure the directory exists.
2233 If DO_MULTI is true, multilib paths are output first, then
2235 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2236 It is also used by the --print-search-dirs flag. */
2239 build_search_list (const struct path_prefix *paths, const char *prefix,
2240 bool check_dir, bool do_multi)
2242 struct add_to_obstack_info info;
2244 info.ob = &collect_obstack;
2245 info.check_dir = check_dir;
2246 info.first_time = true;
2248 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2249 obstack_1grow (&collect_obstack, '=');
2251 for_each_path (paths, do_multi, 0, add_to_obstack, &info);
2253 obstack_1grow (&collect_obstack, '\0');
2254 return XOBFINISH (&collect_obstack, char *);
2257 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2261 putenv_from_prefixes (const struct path_prefix *paths, const char *env_var,
2264 xputenv (build_search_list (paths, env_var, true, do_multi));
2267 /* Check whether NAME can be accessed in MODE. This is like access,
2268 except that it never considers directories to be executable. */
2271 access_check (const char *name, int mode)
2277 if (stat (name, &st) < 0
2278 || S_ISDIR (st.st_mode))
2282 return access (name, mode);
2285 /* Callback for find_a_file. Appends the file name to the directory
2286 path. If the resulting file exists in the right mode, return the
2287 full pathname to the file. */
2289 struct file_at_path_info {
2298 file_at_path (char *path, void *data)
2300 struct file_at_path_info *info = (struct file_at_path_info *) data;
2301 size_t len = strlen (path);
2303 memcpy (path + len, info->name, info->name_len);
2304 len += info->name_len;
2306 /* Some systems have a suffix for executable files.
2307 So try appending that first. */
2308 if (info->suffix_len)
2310 memcpy (path + len, info->suffix, info->suffix_len + 1);
2311 if (access_check (path, info->mode) == 0)
2316 if (access_check (path, info->mode) == 0)
2322 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2323 access to check permissions. If DO_MULTI is true, search multilib
2324 paths then non-multilib paths, otherwise do not search multilib paths.
2325 Return 0 if not found, otherwise return its name, allocated with malloc. */
2328 find_a_file (const struct path_prefix *pprefix, const char *name, int mode,
2331 struct file_at_path_info info;
2333 #ifdef DEFAULT_ASSEMBLER
2334 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2335 return xstrdup (DEFAULT_ASSEMBLER);
2338 #ifdef DEFAULT_LINKER
2339 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2340 return xstrdup (DEFAULT_LINKER);
2343 /* Determine the filename to execute (special case for absolute paths). */
2345 if (IS_ABSOLUTE_PATH (name))
2347 if (access (name, mode) == 0)
2348 return xstrdup (name);
2354 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "";
2355 info.name_len = strlen (info.name);
2356 info.suffix_len = strlen (info.suffix);
2359 return (char*) for_each_path (pprefix, do_multi,
2360 info.name_len + info.suffix_len,
2361 file_at_path, &info);
2364 /* Ranking of prefixes in the sort list. -B prefixes are put before
2367 enum path_prefix_priority
2369 PREFIX_PRIORITY_B_OPT,
2370 PREFIX_PRIORITY_LAST
2373 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2374 order according to PRIORITY. Within each PRIORITY, new entries are
2377 If WARN is nonzero, we will warn if no file is found
2378 through this prefix. WARN should point to an int
2379 which will be set to 1 if this entry is used.
2381 COMPONENT is the value to be passed to update_path.
2383 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2384 the complete value of machine_suffix.
2385 2 means try both machine_suffix and just_machine_suffix. */
2388 add_prefix (struct path_prefix *pprefix, const char *prefix,
2389 const char *component, /* enum prefix_priority */ int priority,
2390 int require_machine_suffix, int os_multilib)
2392 struct prefix_list *pl, **prev;
2395 for (prev = &pprefix->plist;
2396 (*prev) != NULL && (*prev)->priority <= priority;
2397 prev = &(*prev)->next)
2400 /* Keep track of the longest prefix. */
2402 prefix = update_path (prefix, component);
2403 len = strlen (prefix);
2404 if (len > pprefix->max_len)
2405 pprefix->max_len = len;
2407 pl = XNEW (struct prefix_list);
2408 pl->prefix = prefix;
2409 pl->require_machine_suffix = require_machine_suffix;
2410 pl->priority = priority;
2411 pl->os_multilib = os_multilib;
2413 /* Insert after PREV. */
2418 /* Same as add_prefix, but prepending target_system_root to prefix. */
2419 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2421 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2422 const char *component,
2423 /* enum prefix_priority */ int priority,
2424 int require_machine_suffix, int os_multilib)
2426 if (!IS_ABSOLUTE_PATH (prefix))
2427 fatal_error ("system path %qs is not absolute", prefix);
2429 if (target_system_root)
2431 if (target_sysroot_suffix)
2432 prefix = concat (target_sysroot_suffix, prefix, NULL);
2433 prefix = concat (target_system_root, prefix, NULL);
2435 /* We have to override this because GCC's notion of sysroot
2436 moves along with GCC. */
2440 add_prefix (pprefix, prefix, component, priority,
2441 require_machine_suffix, os_multilib);
2444 /* Execute the command specified by the arguments on the current line of spec.
2445 When using pipes, this includes several piped-together commands
2446 with `|' between them.
2448 Return 0 if successful, -1 if failed. */
2454 int n_commands; /* # of command. */
2456 struct pex_obj *pex;
2459 const char *prog; /* program name. */
2460 const char **argv; /* vector of args. */
2463 struct command *commands; /* each command buffer with above info. */
2465 gcc_assert (!processing_spec_function);
2469 string = find_a_file (&exec_prefixes, argbuf[0], X_OK, false);
2470 argbuf[0] = (string) ? string : argbuf[0];
2471 insert_wrapper (wrapper_string);
2474 /* Count # of piped commands. */
2475 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2476 if (strcmp (argbuf[i], "|") == 0)
2479 /* Get storage for each command. */
2480 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2482 /* Split argbuf into its separate piped processes,
2483 and record info about each one.
2484 Also search for the programs that are to be run. */
2486 commands[0].prog = argbuf[0]; /* first command. */
2487 commands[0].argv = &argbuf[0];
2489 if (!wrapper_string)
2491 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false);
2492 commands[0].argv[0] = (string) ? string : commands[0].argv[0];
2495 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2496 if (strcmp (argbuf[i], "|") == 0)
2497 { /* each command. */
2498 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2499 fatal_error ("-pipe not supported");
2501 argbuf[i] = 0; /* termination of command args. */
2502 commands[n_commands].prog = argbuf[i + 1];
2503 commands[n_commands].argv = &argbuf[i + 1];
2504 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2507 commands[n_commands].argv[0] = string;
2511 argbuf[argbuf_index] = 0;
2513 /* If -v, print what we are about to do, and maybe query. */
2517 /* For help listings, put a blank line between sub-processes. */
2518 if (print_help_list)
2519 fputc ('\n', stderr);
2521 /* Print each piped command as a separate line. */
2522 for (i = 0; i < n_commands; i++)
2524 const char *const *j;
2526 if (verbose_only_flag)
2528 for (j = commands[i].argv; *j; j++)
2531 for (p = *j; *p; ++p)
2532 if (!ISALNUM ((unsigned char) *p)
2533 && *p != '_' && *p != '/' && *p != '-' && *p != '.')
2537 fprintf (stderr, " \"");
2538 for (p = *j; *p; ++p)
2540 if (*p == '"' || *p == '\\' || *p == '$')
2541 fputc ('\\', stderr);
2544 fputc ('"', stderr);
2547 fprintf (stderr, " %s", *j);
2551 for (j = commands[i].argv; *j; j++)
2552 fprintf (stderr, " %s", *j);
2554 /* Print a pipe symbol after all but the last command. */
2555 if (i + 1 != n_commands)
2556 fprintf (stderr, " |");
2557 fprintf (stderr, "\n");
2560 if (verbose_only_flag != 0)
2562 /* verbose_only_flag should act as if the spec was
2563 executed, so increment execution_count before
2564 returning. This prevents spurious warnings about
2565 unused linker input files, etc. */
2570 fnotice (stderr, "\nGo ahead? (y or n) ");
2574 while (getchar () != '\n')
2577 if (i != 'y' && i != 'Y')
2582 #ifdef ENABLE_VALGRIND_CHECKING
2583 /* Run the each command through valgrind. To simplify prepending the
2584 path to valgrind and the option "-q" (for quiet operation unless
2585 something triggers), we allocate a separate argv array. */
2587 for (i = 0; i < n_commands; i++)
2593 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2596 argv = XALLOCAVEC (const char *, argc + 3);
2598 argv[0] = VALGRIND_PATH;
2600 for (j = 2; j < argc + 2; j++)
2601 argv[j] = commands[i].argv[j - 2];
2604 commands[i].argv = argv;
2605 commands[i].prog = argv[0];
2609 /* Run each piped subprocess. */
2611 pex = pex_init (PEX_USE_PIPES | ((report_times || report_times_to_file)
2612 ? PEX_RECORD_TIMES : 0),
2613 progname, temp_filename);
2615 fatal_error ("pex_init failed: %m");
2617 for (i = 0; i < n_commands; i++)
2621 const char *string = commands[i].argv[0];
2623 errmsg = pex_run (pex,
2624 ((i + 1 == n_commands ? PEX_LAST : 0)
2625 | (string == commands[i].prog ? PEX_SEARCH : 0)),
2626 string, CONST_CAST (char **, commands[i].argv),
2631 fatal_error (errmsg);
2635 pfatal_with_name (errmsg);
2639 if (string != commands[i].prog)
2640 free (CONST_CAST (char *, string));
2645 /* Wait for all the subprocesses to finish. */
2649 struct pex_time *times = NULL;
2652 statuses = (int *) alloca (n_commands * sizeof (int));
2653 if (!pex_get_status (pex, n_commands, statuses))
2654 fatal_error ("failed to get exit status: %m");
2656 if (report_times || report_times_to_file)
2658 times = (struct pex_time *) alloca (n_commands * sizeof (struct pex_time));
2659 if (!pex_get_times (pex, n_commands, times))
2660 fatal_error ("failed to get process times: %m");
2665 for (i = 0; i < n_commands; ++i)
2667 int status = statuses[i];
2669 if (WIFSIGNALED (status))
2672 /* SIGPIPE is a special case. It happens in -pipe mode
2673 when the compiler dies before the preprocessor is done,
2674 or the assembler dies before the compiler is done.
2675 There's generally been an error already, and this is
2676 just fallout. So don't generate another error unless
2677 we would otherwise have succeeded. */
2678 if (WTERMSIG (status) == SIGPIPE
2679 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2686 internal_error ("%s (program %s)",
2687 strsignal (WTERMSIG (status)), commands[i].prog);
2689 else if (WIFEXITED (status)
2690 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2692 if (WEXITSTATUS (status) > greatest_status)
2693 greatest_status = WEXITSTATUS (status);
2697 if (report_times || report_times_to_file)
2699 struct pex_time *pt = ×[i];
2702 ut = ((double) pt->user_seconds
2703 + (double) pt->user_microseconds / 1.0e6);
2704 st = ((double) pt->system_seconds
2705 + (double) pt->system_microseconds / 1.0e6);
2710 fnotice (stderr, "# %s %.2f %.2f\n",
2711 commands[i].prog, ut, st);
2713 if (report_times_to_file)
2716 const char *const *j;
2718 fprintf (report_times_to_file, "%g %g", ut, st);
2720 for (j = &commands[i].prog; *j; j = &commands[i].argv[++c])
2723 for (p = *j; *p; ++p)
2724 if (*p == '"' || *p == '\\' || *p == '$'
2730 fprintf (report_times_to_file, " \"");
2731 for (p = *j; *p; ++p)
2733 if (*p == '"' || *p == '\\' || *p == '$')
2734 fputc ('\\', report_times_to_file);
2735 fputc (*p, report_times_to_file);
2737 fputc ('"', report_times_to_file);
2740 fprintf (report_times_to_file, " %s", *j);
2743 fputc ('\n', report_times_to_file);
2753 /* Find all the switches given to us
2754 and make a vector describing them.
2755 The elements of the vector are strings, one per switch given.
2756 If a switch uses following arguments, then the `part1' field
2757 is the switch itself and the `args' field
2758 is a null-terminated vector containing the following arguments.
2759 Bits in the `live_cond' field are:
2760 SWITCH_LIVE to indicate this switch is true in a conditional spec.
2761 SWITCH_FALSE to indicate this switch is overridden by a later switch.
2762 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
2763 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
2764 in all do_spec calls afterwards. Used for %<S from self specs.
2765 The `validated' field is nonzero if any spec has looked at this switch;
2766 if it remains zero at the end of the run, it must be meaningless. */
2768 #define SWITCH_LIVE 0x1
2769 #define SWITCH_FALSE 0x2
2770 #define SWITCH_IGNORE 0x4
2771 #define SWITCH_IGNORE_PERMANENTLY 0x8
2777 unsigned int live_cond;
2778 unsigned char validated;
2779 unsigned char ordering;
2782 static struct switchstr *switches;
2784 static int n_switches;
2786 static int n_switches_alloc;
2788 /* Set to zero if -fcompare-debug is disabled, positive if it's
2789 enabled and we're running the first compilation, negative if it's
2790 enabled and we're running the second compilation. For most of the
2791 time, it's in the range -1..1, but it can be temporarily set to 2
2792 or 3 to indicate that the -fcompare-debug flags didn't come from
2793 the command-line, but rather from the GCC_COMPARE_DEBUG environment
2794 variable, until a synthesized -fcompare-debug flag is added to the
2798 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
2799 int compare_debug_second;
2801 /* Set to the flags that should be passed to the second compilation in
2802 a -fcompare-debug compilation. */
2803 const char *compare_debug_opt;
2805 static struct switchstr *switches_debug_check[2];
2807 static int n_switches_debug_check[2];
2809 static int n_switches_alloc_debug_check[2];
2811 static char *debug_check_temp_file[2];
2813 /* Language is one of three things:
2815 1) The name of a real programming language.
2816 2) NULL, indicating that no one has figured out
2818 3) '*', indicating that the file should be passed
2823 const char *language;
2824 struct compiler *incompiler;
2829 /* Also a vector of input files specified. */
2831 static struct infile *infiles;
2835 static int n_infiles_alloc;
2837 /* True if multiple input files are being compiled to a single
2840 static bool combine_inputs;
2842 /* This counts the number of libraries added by lang_specific_driver, so that
2843 we can tell if there were any user supplied any files or libraries. */
2845 static int added_libraries;
2847 /* And a vector of corresponding output files is made up later. */
2849 const char **outfiles;
2851 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2853 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2854 is true if we should look for an executable suffix. DO_OBJ
2855 is true if we should look for an object suffix. */
2858 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
2859 int do_obj ATTRIBUTE_UNUSED)
2861 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2869 len = strlen (name);
2871 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2872 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2873 if (do_obj && len > 2
2874 && name[len - 2] == '.'
2875 && name[len - 1] == 'o')
2877 obstack_grow (&obstack, name, len - 2);
2878 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2879 name = XOBFINISH (&obstack, const char *);
2883 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2884 /* If there is no filetype, make it the executable suffix (which includes
2885 the "."). But don't get confused if we have just "-o". */
2886 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
2889 for (i = len - 1; i >= 0; i--)
2890 if (IS_DIR_SEPARATOR (name[i]))
2893 for (i++; i < len; i++)
2897 obstack_grow (&obstack, name, len);
2898 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
2899 strlen (TARGET_EXECUTABLE_SUFFIX));
2900 name = XOBFINISH (&obstack, const char *);
2907 /* Display the command line switches accepted by gcc. */
2911 printf (_("Usage: %s [options] file...\n"), progname);
2912 fputs (_("Options:\n"), stdout);
2914 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
2915 fputs (_(" --help Display this information\n"), stdout);
2916 fputs (_(" --target-help Display target specific command line options\n"), stdout);
2917 fputs (_(" --help={target|optimizers|warnings|params|[^]{joined|separate|undocumented}}[,...]\n"), stdout);
2918 fputs (_(" Display specific types of command line options\n"), stdout);
2920 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
2921 fputs (_(" --version Display compiler version information\n"), stdout);
2922 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
2923 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
2924 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
2925 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
2926 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
2927 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
2928 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
2929 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
2931 -print-multi-lib Display the mapping between command line options and\n\
2932 multiple library search directories\n"), stdout);
2933 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
2934 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout);
2935 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout);
2936 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
2937 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
2938 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
2939 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
2940 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
2941 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
2942 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
2943 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout);
2945 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
2946 prefixes to other gcc components\n"), stdout);
2947 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
2948 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
2949 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
2950 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
2952 --sysroot=<directory> Use <directory> as the root directory for headers\n\
2953 and libraries\n"), stdout);
2954 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
2955 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
2956 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
2957 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
2958 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
2959 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
2960 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
2962 -x <language> Specify the language of the following input files\n\
2963 Permissible languages include: c c++ assembler none\n\
2964 'none' means revert to the default behavior of\n\
2965 guessing the language based on the file's extension\n\
2969 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
2970 passed on to the various sub-processes invoked by %s. In order to pass\n\
2971 other options on to these processes the -W<letter> options must be used.\n\
2974 /* The rest of the options are displayed by invocations of the various
2979 add_preprocessor_option (const char *option, int len)
2981 n_preprocessor_options++;
2983 if (! preprocessor_options)
2984 preprocessor_options = XNEWVEC (char *, n_preprocessor_options);
2986 preprocessor_options = XRESIZEVEC (char *, preprocessor_options,
2987 n_preprocessor_options);
2989 preprocessor_options [n_preprocessor_options - 1] =
2990 save_string (option, len);
2994 add_assembler_option (const char *option, int len)
2996 n_assembler_options++;
2998 if (! assembler_options)
2999 assembler_options = XNEWVEC (char *, n_assembler_options);
3001 assembler_options = XRESIZEVEC (char *, assembler_options,
3002 n_assembler_options);
3004 assembler_options [n_assembler_options - 1] = save_string (option, len);
3008 add_linker_option (const char *option, int len)
3012 if (! linker_options)
3013 linker_options = XNEWVEC (char *, n_linker_options);
3015 linker_options = XRESIZEVEC (char *, linker_options, n_linker_options);
3017 linker_options [n_linker_options - 1] = save_string (option, len);
3020 /* Allocate space for an input file in infiles. */
3025 if (n_infiles_alloc == 0)
3027 n_infiles_alloc = 16;
3028 infiles = XNEWVEC (struct infile, n_infiles_alloc);
3030 else if (n_infiles_alloc == n_infiles)
3032 n_infiles_alloc *= 2;
3033 infiles = XRESIZEVEC (struct infile, infiles, n_infiles_alloc);
3037 /* Store an input file with the given NAME and LANGUAGE in
3041 add_infile (const char *name, const char *language)
3044 infiles[n_infiles].name = name;
3045 infiles[n_infiles++].language = language;
3048 /* Allocate space for a switch in switches. */
3053 if (n_switches_alloc == 0)
3055 n_switches_alloc = 16;
3056 switches = XNEWVEC (struct switchstr, n_switches_alloc);
3058 else if (n_switches_alloc == n_switches)
3060 n_switches_alloc *= 2;
3061 switches = XRESIZEVEC (struct switchstr, switches, n_switches_alloc);
3065 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3066 as validated if VALIDATED. */
3069 save_switch (const char *opt, size_t n_args, const char *const *args,
3073 switches[n_switches].part1 = opt + 1;
3075 switches[n_switches].args = 0;
3078 switches[n_switches].args = XNEWVEC (const char *, n_args + 1);
3079 memcpy (switches[n_switches].args, args, n_args * sizeof (const char *));
3080 switches[n_switches].args[n_args] = NULL;
3083 switches[n_switches].live_cond = 0;
3084 switches[n_switches].validated = validated;
3085 switches[n_switches].ordering = 0;
3089 /* Handle an option DECODED that is unknown to the option-processing
3090 machinery, but may be known to specs. */
3093 driver_unknown_option_callback (const struct cl_decoded_option *decoded)
3095 save_switch (decoded->canonical_option[0],
3096 decoded->canonical_option_num_elements - 1,
3097 &decoded->canonical_option[1], false);
3102 /* Handle an option DECODED that is not marked as CL_DRIVER.
3103 LANG_MASK will always be CL_DRIVER. */
3106 driver_wrong_lang_callback (const struct cl_decoded_option *decoded,
3107 unsigned int lang_mask ATTRIBUTE_UNUSED)
3109 /* At this point, non-driver options are accepted (and expected to
3110 be passed down by specs) unless marked to be rejected by the
3111 driver. Options to be rejected by the driver but accepted by the
3112 compilers proper are treated just like completely unknown
3114 const struct cl_option *option = &cl_options[decoded->opt_index];
3116 if (option->flags & CL_REJECT_DRIVER)
3117 error ("unrecognized command line option %qs",
3118 decoded->orig_option_with_args_text);
3120 driver_unknown_option_callback (decoded);
3123 /* Note that an option (index OPT_INDEX, argument ARG, value VALUE)
3124 has been successfully handled with a handler for mask MASK. */
3127 driver_post_handling_callback (const struct cl_decoded_option *decoded ATTRIBUTE_UNUSED,
3128 unsigned int mask ATTRIBUTE_UNUSED)
3130 /* Nothing to do here. */
3133 static const char *spec_lang = 0;
3134 static int last_language_n_infiles;
3136 /* Handle a driver option; arguments and return value as for
3140 driver_handle_option (struct gcc_options *opts,
3141 struct gcc_options *opts_set,
3142 const struct cl_decoded_option *decoded,
3143 unsigned int lang_mask ATTRIBUTE_UNUSED, int kind,
3144 const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED,
3145 diagnostic_context *dc)
3147 size_t opt_index = decoded->opt_index;
3148 const char *arg = decoded->arg;
3149 const char *compare_debug_replacement_opt;
3150 int value = decoded->value;
3151 bool validated = false;
3152 bool do_save = true;
3154 gcc_assert (opts == &global_options);
3155 gcc_assert (opts_set == &global_options_set);
3156 gcc_assert (kind == DK_UNSPECIFIED);
3157 gcc_assert (dc == global_dc);
3163 struct spec_list *sl;
3165 for (sl = specs; sl; sl = sl->next)
3166 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3167 if (link_command_spec)
3168 printf ("*link_command:\n%s\n\n", link_command_spec);
3172 case OPT_dumpversion:
3173 printf ("%s\n", spec_version);
3176 case OPT_dumpmachine:
3177 printf ("%s\n", spec_machine);
3183 /* CPP driver cannot obtain switch from cc1_options. */
3185 add_preprocessor_option ("--version", strlen ("--version"));
3186 add_assembler_option ("--version", strlen ("--version"));
3187 add_linker_option ("--version", strlen ("--version"));
3191 print_help_list = 1;
3193 /* CPP driver cannot obtain switch from cc1_options. */
3195 add_preprocessor_option ("--help", 6);
3196 add_assembler_option ("--help", 6);
3197 add_linker_option ("--help", 6);
3201 print_subprocess_help = 2;
3204 case OPT__target_help:
3205 print_subprocess_help = 1;
3207 /* CPP driver cannot obtain switch from cc1_options. */
3209 add_preprocessor_option ("--target-help", 13);
3210 add_assembler_option ("--target-help", 13);
3211 add_linker_option ("--target-help", 13);
3214 case OPT_pass_exit_codes:
3215 case OPT_print_search_dirs:
3216 case OPT_print_file_name_:
3217 case OPT_print_prog_name_:
3218 case OPT_print_multi_lib:
3219 case OPT_print_multi_directory:
3220 case OPT_print_sysroot:
3221 case OPT_print_multi_os_directory:
3222 case OPT_print_sysroot_headers_suffix:
3225 /* These options set the variables specified in common.opt
3226 automatically, and do not need to be saved for spec
3231 case OPT_print_libgcc_file_name:
3232 print_file_name = "libgcc.a";
3236 case OPT_fcompare_debug_second:
3237 compare_debug_second = 1;
3240 case OPT_fcompare_debug:
3244 compare_debug_replacement_opt = "-fcompare-debug=";
3246 goto compare_debug_with_arg;
3249 compare_debug_replacement_opt = "-fcompare-debug=-gtoggle";
3251 goto compare_debug_with_arg;
3258 case OPT_fcompare_debug_:
3259 compare_debug_replacement_opt = decoded->canonical_option[0];
3260 compare_debug_with_arg:
3261 gcc_assert (decoded->canonical_option_num_elements == 1);
3262 gcc_assert (arg != NULL);
3267 if (compare_debug < 0)
3268 compare_debug_opt = NULL;
3270 compare_debug_opt = arg;
3271 save_switch (compare_debug_replacement_opt, 0, NULL, validated);
3277 /* Pass the rest of this option to the assembler. */
3279 /* Split the argument at commas. */
3281 for (j = 0; arg[j]; j++)
3284 add_assembler_option (arg + prev, j - prev);
3288 /* Record the part after the last comma. */
3289 add_assembler_option (arg + prev, j - prev);
3297 /* Pass the rest of this option to the preprocessor. */
3299 /* Split the argument at commas. */
3301 for (j = 0; arg[j]; j++)
3304 add_preprocessor_option (arg + prev, j - prev);
3308 /* Record the part after the last comma. */
3309 add_preprocessor_option (arg + prev, j - prev);
3317 /* Split the argument at commas. */
3319 for (j = 0; arg[j]; j++)
3322 add_infile (save_string (arg + prev, j - prev), "*");
3325 /* Record the part after the last comma. */
3326 add_infile (arg + prev, "*");
3332 add_infile (arg, "*");
3336 case OPT_Xpreprocessor:
3337 add_preprocessor_option (arg, strlen (arg));
3341 case OPT_Xassembler:
3342 add_assembler_option (arg, strlen (arg));
3347 /* POSIX allows separation of -l and the lib arg; canonicalize
3348 by concatenating -l with its arg */
3349 add_infile (concat ("-l", arg, NULL), "*");
3354 /* Similarly, canonicalize -L for linkers that may not accept
3355 separate arguments. */
3356 save_switch (concat ("-L", arg, NULL), 0, NULL, validated);
3359 case OPT_save_temps:
3360 save_temps_flag = SAVE_TEMPS_CWD;
3364 case OPT_save_temps_:
3365 if (strcmp (arg, "cwd") == 0)
3366 save_temps_flag = SAVE_TEMPS_CWD;
3367 else if (strcmp (arg, "obj") == 0
3368 || strcmp (arg, "object") == 0)
3369 save_temps_flag = SAVE_TEMPS_OBJ;
3371 fatal_error ("%qs is an unknown -save-temps option",
3372 decoded->orig_option_with_args_text);
3375 case OPT_no_canonical_prefixes:
3376 /* Already handled as a special case, so ignored here. */
3382 /* These options set the variables specified in common.opt
3383 automatically, but do need to be saved for spec
3389 struct user_specs *user = XNEW (struct user_specs);
3391 user->next = (struct user_specs *) 0;
3392 user->filename = arg;
3393 if (user_specs_tail)
3394 user_specs_tail->next = user;
3396 user_specs_head = user;
3397 user_specs_tail = user;
3403 target_system_root = arg;
3404 target_system_root_changed = 1;
3409 if (report_times_to_file)
3410 fclose (report_times_to_file);
3411 report_times_to_file = fopen (arg, "a");
3417 This is similar to -v except that there is no execution
3418 of the commands and the echoed arguments are quoted. It
3419 is intended for use in shell scripts to capture the
3420 driver-generated command line. */
3421 verbose_only_flag++;
3428 size_t len = strlen (arg);
3430 /* Catch the case where the user has forgotten to append a
3431 directory separator to the path. Note, they may be using
3432 -B to add an executable name prefix, eg "i386-elf-", in
3433 order to distinguish between multiple installations of
3434 GCC in the same directory. Hence we must check to see
3435 if appending a directory separator actually makes a
3436 valid directory name. */
3437 if (!IS_DIR_SEPARATOR (arg[len - 1])
3438 && is_directory (arg, false))
3440 char *tmp = XNEWVEC (char, len + 2);
3442 tmp[len] = DIR_SEPARATOR;
3447 add_prefix (&exec_prefixes, arg, NULL,
3448 PREFIX_PRIORITY_B_OPT, 0, 0);
3449 add_prefix (&startfile_prefixes, arg, NULL,
3450 PREFIX_PRIORITY_B_OPT, 0, 0);
3451 add_prefix (&include_prefixes, arg, NULL,
3452 PREFIX_PRIORITY_B_OPT, 0, 0);
3459 if (!strcmp (spec_lang, "none"))
3460 /* Suppress the warning if -xnone comes after the last input
3461 file, because alternate command interfaces like g++ might
3462 find it useful to place -xnone after each input file. */
3465 last_language_n_infiles = n_infiles;
3471 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3472 arg = convert_filename (arg, ! have_c, 0);
3474 /* Save the output name in case -save-temps=obj was used. */
3475 save_temps_prefix = xstrdup (arg);
3476 /* On some systems, ld cannot handle "-o" without a space. So
3477 split the option from its argument. */
3478 save_switch ("-o", 1, &arg, validated);
3481 case OPT_static_libgcc:
3482 case OPT_shared_libgcc:
3483 case OPT_static_libgfortran:
3484 case OPT_static_libstdc__:
3485 /* These are always valid, since gcc.c itself understands the
3486 first two, gfortranspec.c understands -static-libgfortran and
3487 g++spec.c understands -static-libstdc++ */
3492 /* Various driver options need no special processing at this
3493 point, having been handled in a prescan above or being
3494 handled by specs. */
3499 save_switch (decoded->canonical_option[0],
3500 decoded->canonical_option_num_elements - 1,
3501 &decoded->canonical_option[1], validated);
3505 /* Put the driver's standard set of option handlers in *HANDLERS. */
3508 set_option_handlers (struct cl_option_handlers *handlers)
3510 handlers->unknown_option_callback = driver_unknown_option_callback;
3511 handlers->wrong_lang_callback = driver_wrong_lang_callback;
3512 handlers->post_handling_callback = driver_post_handling_callback;
3513 handlers->num_handlers = 1;
3514 handlers->handlers[0].handler = driver_handle_option;
3515 handlers->handlers[0].mask = CL_DRIVER;
3518 /* Create the vector `switches' and its contents.
3519 Store its length in `n_switches'. */
3522 process_command (unsigned int decoded_options_count,
3523 struct cl_decoded_option *decoded_options)
3527 const char *tooldir_prefix;
3528 char *(*get_relative_prefix) (const char *, const char *,
3529 const char *) = NULL;
3530 struct cl_option_handlers handlers;
3533 GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3537 added_libraries = 0;
3539 /* Figure compiler version from version string. */
3541 compiler_version = temp1 = xstrdup (version_string);
3543 for (; *temp1; ++temp1)
3552 /* Handle any -no-canonical-prefixes flag early, to assign the function
3553 that builds relative prefixes. This function creates default search
3554 paths that are needed later in normal option handling. */
3556 for (j = 1; j < decoded_options_count; j++)
3558 if (decoded_options[j].opt_index == OPT_no_canonical_prefixes)
3560 get_relative_prefix = make_relative_prefix_ignore_links;
3564 if (! get_relative_prefix)
3565 get_relative_prefix = make_relative_prefix;
3567 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3568 see if we can create it from the pathname specified in
3569 decoded_options[0].arg. */
3571 gcc_libexec_prefix = standard_libexec_prefix;
3573 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3574 if (!gcc_exec_prefix)
3576 gcc_exec_prefix = get_relative_prefix (decoded_options[0].arg,
3577 standard_bindir_prefix,
3578 standard_exec_prefix);
3579 gcc_libexec_prefix = get_relative_prefix (decoded_options[0].arg,
3580 standard_bindir_prefix,
3581 standard_libexec_prefix);
3582 if (gcc_exec_prefix)
3583 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3587 /* make_relative_prefix requires a program name, but
3588 GCC_EXEC_PREFIX is typically a directory name with a trailing
3589 / (which is ignored by make_relative_prefix), so append a
3591 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL);
3592 gcc_libexec_prefix = get_relative_prefix (tmp_prefix,
3593 standard_exec_prefix,
3594 standard_libexec_prefix);
3596 /* The path is unrelocated, so fallback to the original setting. */
3597 if (!gcc_libexec_prefix)
3598 gcc_libexec_prefix = standard_libexec_prefix;
3604 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3605 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3606 or an automatically created GCC_EXEC_PREFIX from
3607 decoded_options[0].arg. */
3609 /* Do language-specific adjustment/addition of flags. */
3610 lang_specific_driver (&decoded_options, &decoded_options_count,
3613 if (gcc_exec_prefix)
3615 int len = strlen (gcc_exec_prefix);
3617 if (len > (int) sizeof ("/lib/gcc/") - 1
3618 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3620 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3621 if (IS_DIR_SEPARATOR (*temp)
3622 && strncmp (temp + 1, "lib", 3) == 0
3623 && IS_DIR_SEPARATOR (temp[4])
3624 && strncmp (temp + 5, "gcc", 3) == 0)
3625 len -= sizeof ("/lib/gcc/") - 1;
3628 set_std_prefix (gcc_exec_prefix, len);
3629 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3630 PREFIX_PRIORITY_LAST, 0, 0);
3631 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3632 PREFIX_PRIORITY_LAST, 0, 0);
3635 /* COMPILER_PATH and LIBRARY_PATH have values
3636 that are lists of directory names with colons. */
3638 GET_ENVIRONMENT (temp, "COMPILER_PATH");
3641 const char *startp, *endp;
3642 char *nstore = (char *) alloca (strlen (temp) + 3);
3644 startp = endp = temp;
3647 if (*endp == PATH_SEPARATOR || *endp == 0)
3649 strncpy (nstore, startp, endp - startp);
3651 strcpy (nstore, concat (".", dir_separator_str, NULL));
3652 else if (!IS_DIR_SEPARATOR (endp[-1]))
3654 nstore[endp - startp] = DIR_SEPARATOR;
3655 nstore[endp - startp + 1] = 0;
3658 nstore[endp - startp] = 0;
3659 add_prefix (&exec_prefixes, nstore, 0,
3660 PREFIX_PRIORITY_LAST, 0, 0);
3661 add_prefix (&include_prefixes, nstore, 0,
3662 PREFIX_PRIORITY_LAST, 0, 0);
3665 endp = startp = endp + 1;
3672 GET_ENVIRONMENT (temp, LIBRARY_PATH_ENV);
3673 if (temp && *cross_compile == '0')
3675 const char *startp, *endp;
3676 char *nstore = (char *) alloca (strlen (temp) + 3);
3678 startp = endp = temp;
3681 if (*endp == PATH_SEPARATOR || *endp == 0)
3683 strncpy (nstore, startp, endp - startp);
3685 strcpy (nstore, concat (".", dir_separator_str, NULL));
3686 else if (!IS_DIR_SEPARATOR (endp[-1]))
3688 nstore[endp - startp] = DIR_SEPARATOR;
3689 nstore[endp - startp + 1] = 0;
3692 nstore[endp - startp] = 0;
3693 add_prefix (&startfile_prefixes, nstore, NULL,
3694 PREFIX_PRIORITY_LAST, 0, 1);
3697 endp = startp = endp + 1;
3704 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3705 GET_ENVIRONMENT (temp, "LPATH");
3706 if (temp && *cross_compile == '0')
3708 const char *startp, *endp;
3709 char *nstore = (char *) alloca (strlen (temp) + 3);
3711 startp = endp = temp;
3714 if (*endp == PATH_SEPARATOR || *endp == 0)
3716 strncpy (nstore, startp, endp - startp);
3718 strcpy (nstore, concat (".", dir_separator_str, NULL));
3719 else if (!IS_DIR_SEPARATOR (endp[-1]))
3721 nstore[endp - startp] = DIR_SEPARATOR;
3722 nstore[endp - startp + 1] = 0;
3725 nstore[endp - startp] = 0;
3726 add_prefix (&startfile_prefixes, nstore, NULL,
3727 PREFIX_PRIORITY_LAST, 0, 1);
3730 endp = startp = endp + 1;
3737 /* Process the options and store input files and switches in their
3740 last_language_n_infiles = -1;
3742 set_option_handlers (&handlers);
3744 for (j = 1; j < decoded_options_count; j++)
3746 switch (decoded_options[j].opt_index)
3758 for (j = 1; j < decoded_options_count; j++)
3760 if (decoded_options[j].opt_index == OPT_SPECIAL_input_file)
3762 const char *arg = decoded_options[j].arg;
3763 const char *p = strrchr (arg, '@');
3767 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3768 arg = convert_filename (arg, 0, access (arg, F_OK));
3770 /* For LTO static archive support we handle input file
3771 specifications that are composed of a filename and
3772 an offset like FNAME@OFFSET. */
3775 && sscanf (p, "@%li%n", &offset, &consumed) >= 1
3776 && strlen (p) == (unsigned int)consumed)
3778 fname = (char *)xmalloc (p - arg + 1);
3779 memcpy (fname, arg, p - arg);
3780 fname[p - arg] = '\0';
3781 /* Only accept non-stdin and existing FNAME parts, otherwise
3782 try with the full name. */
3783 if (strcmp (fname, "-") == 0 || access (fname, F_OK) < 0)
3786 fname = xstrdup (arg);
3790 fname = xstrdup (arg);
3792 if (strcmp (fname, "-") != 0 && access (fname, F_OK) < 0)
3793 perror_with_name (fname);
3795 add_infile (arg, spec_lang);
3801 read_cmdline_option (&global_options, &global_options_set,
3802 decoded_options + j, CL_DRIVER, &handlers,
3806 /* If -save-temps=obj and -o name, create the prefix to use for %b.
3807 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
3808 if (save_temps_flag == SAVE_TEMPS_OBJ && save_temps_prefix != NULL)
3810 save_temps_length = strlen (save_temps_prefix);
3811 temp = strrchr (lbasename (save_temps_prefix), '.');
3814 save_temps_length -= strlen (temp);
3815 save_temps_prefix[save_temps_length] = '\0';
3819 else if (save_temps_prefix != NULL)
3821 free (save_temps_prefix);
3822 save_temps_prefix = NULL;
3825 if (save_temps_flag && use_pipes)
3827 /* -save-temps overrides -pipe, so that temp files are produced */
3828 if (save_temps_flag)
3829 warning (0, "-pipe ignored because -save-temps specified");
3835 const char *gcd = getenv ("GCC_COMPARE_DEBUG");
3837 if (gcd && gcd[0] == '-')
3840 compare_debug_opt = gcd;
3842 else if (gcd && *gcd && strcmp (gcd, "0"))
3845 compare_debug_opt = "-gtoggle";
3848 else if (compare_debug < 0)
3851 gcc_assert (!compare_debug_opt);
3854 /* Set up the search paths. We add directories that we expect to
3855 contain GNU Toolchain components before directories specified by
3856 the machine description so that we will find GNU components (like
3857 the GNU assembler) before those of the host system. */
3859 /* If we don't know where the toolchain has been installed, use the
3860 configured-in locations. */
3861 if (!gcc_exec_prefix)
3864 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
3865 PREFIX_PRIORITY_LAST, 1, 0);
3866 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
3867 PREFIX_PRIORITY_LAST, 2, 0);
3868 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3869 PREFIX_PRIORITY_LAST, 2, 0);
3871 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3872 PREFIX_PRIORITY_LAST, 1, 0);
3875 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix));
3876 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3877 dir_separator_str, NULL);
3879 /* Look for tools relative to the location from which the driver is
3880 running, or, if that is not available, the configured prefix. */
3882 = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
3883 spec_machine, dir_separator_str,
3884 spec_version, dir_separator_str, tooldir_prefix, NULL);
3886 add_prefix (&exec_prefixes,
3887 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3888 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0);
3889 add_prefix (&startfile_prefixes,
3890 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3891 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1);
3893 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
3894 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
3895 then consider it to relocate with the rest of the GCC installation
3896 if GCC_EXEC_PREFIX is set.
3897 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
3898 if (target_system_root && !target_system_root_changed && gcc_exec_prefix)
3900 char *tmp_prefix = get_relative_prefix (decoded_options[0].arg,
3901 standard_bindir_prefix,
3902 target_system_root);
3903 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
3905 target_system_root = tmp_prefix;
3906 target_system_root_changed = 1;
3911 /* More prefixes are enabled in main, after we read the specs file
3912 and determine whether this is cross-compilation or not. */
3914 if (n_infiles == last_language_n_infiles && spec_lang != 0)
3915 warning (0, "%<-x %s%> after last input file has no effect", spec_lang);
3917 if (compare_debug == 2 || compare_debug == 3)
3920 switches[n_switches].part1 = concat ("fcompare-debug=",
3923 switches[n_switches].args = 0;
3924 switches[n_switches].live_cond = 0;
3925 switches[n_switches].validated = 0;
3926 switches[n_switches].ordering = 0;
3931 /* Ensure we only invoke each subprocess once. */
3932 if (print_subprocess_help || print_help_list || print_version)
3936 /* Create a dummy input file, so that we can pass
3937 the help option on to the various sub-processes. */
3938 add_infile ("help-dummy", "c");
3942 switches[n_switches].part1 = 0;
3944 infiles[n_infiles].name = 0;
3947 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
3948 and place that in the environment. */
3951 set_collect_gcc_options (void)
3956 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
3958 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
3959 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
3962 for (i = 0; (int) i < n_switches; i++)
3964 const char *const *args;
3967 obstack_grow (&collect_obstack, " ", 1);
3971 /* Ignore elided switches. */
3972 if ((switches[i].live_cond & SWITCH_IGNORE) != 0)
3975 obstack_grow (&collect_obstack, "'-", 2);
3976 q = switches[i].part1;
3977 while ((p = strchr (q, '\'')))
3979 obstack_grow (&collect_obstack, q, p - q);
3980 obstack_grow (&collect_obstack, "'\\''", 4);
3983 obstack_grow (&collect_obstack, q, strlen (q));
3984 obstack_grow (&collect_obstack, "'", 1);
3986 for (args = switches[i].args; args && *args; args++)
3988 obstack_grow (&collect_obstack, " '", 2);
3990 while ((p = strchr (q, '\'')))
3992 obstack_grow (&collect_obstack, q, p - q);
3993 obstack_grow (&collect_obstack, "'\\''", 4);
3996 obstack_grow (&collect_obstack, q, strlen (q));
3997 obstack_grow (&collect_obstack, "'", 1);
4000 obstack_grow (&collect_obstack, "\0", 1);
4001 xputenv (XOBFINISH (&collect_obstack, char *));
4004 /* Process a spec string, accumulating and running commands. */
4006 /* These variables describe the input file name.
4007 input_file_number is the index on outfiles of this file,
4008 so that the output file name can be stored for later use by %o.
4009 input_basename is the start of the part of the input file
4010 sans all directory names, and basename_length is the number
4011 of characters starting there excluding the suffix .c or whatever. */
4013 static const char *gcc_input_filename;
4014 static int input_file_number;
4015 size_t input_filename_length;
4016 static int basename_length;
4017 static int suffixed_basename_length;
4018 static const char *input_basename;
4019 static const char *input_suffix;
4020 #ifndef HOST_LACKS_INODE_NUMBERS
4021 static struct stat input_stat;
4023 static int input_stat_set;
4025 /* The compiler used to process the current input file. */
4026 static struct compiler *input_file_compiler;
4028 /* These are variables used within do_spec and do_spec_1. */
4030 /* Nonzero if an arg has been started and not yet terminated
4031 (with space, tab or newline). */
4032 static int arg_going;
4034 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4035 is a temporary file name. */
4036 static int delete_this_arg;
4038 /* Nonzero means %w has been seen; the next arg to be terminated
4039 is the output file name of this compilation. */
4040 static int this_is_output_file;
4042 /* Nonzero means %s has been seen; the next arg to be terminated
4043 is the name of a library file and we should try the standard
4044 search dirs for it. */
4045 static int this_is_library_file;
4047 /* Nonzero means %T has been seen; the next arg to be terminated
4048 is the name of a linker script and we should try all of the
4049 standard search dirs for it. If it is found insert a --script
4050 command line switch and then substitute the full path in place,
4051 otherwise generate an error message. */
4052 static int this_is_linker_script;
4054 /* Nonzero means that the input of this command is coming from a pipe. */
4055 static int input_from_pipe;
4057 /* Nonnull means substitute this for any suffix when outputting a switches
4059 static const char *suffix_subst;
4061 /* If there is an argument being accumulated, terminate it and store it. */
4064 end_going_arg (void)
4070 obstack_1grow (&obstack, 0);
4071 string = XOBFINISH (&obstack, const char *);
4072 if (this_is_library_file)
4073 string = find_file (string);
4074 if (this_is_linker_script)
4076 char * full_script_path = find_a_file (&startfile_prefixes, string, R_OK, true);
4078 if (full_script_path == NULL)
4080 error ("unable to locate default linker script %qs in the library search paths", string);
4081 /* Script was not found on search path. */
4084 store_arg ("--script", false, false);
4085 string = full_script_path;
4087 store_arg (string, delete_this_arg, this_is_output_file);
4088 if (this_is_output_file)
4089 outfiles[input_file_number] = string;
4095 /* Parse the WRAPPER string which is a comma separated list of the command line
4096 and insert them into the beginning of argbuf. */
4099 insert_wrapper (const char *wrapper)
4103 char *buf = xstrdup (wrapper);
4112 while ((p = strchr (p, ',')) != NULL);
4114 if (argbuf_index + n >= argbuf_length)
4116 argbuf_length = argbuf_length * 2;
4117 while (argbuf_length < argbuf_index + n)
4119 argbuf = XRESIZEVEC (const char *, argbuf, argbuf_length);
4121 for (i = argbuf_index - 1; i >= 0; i--)
4122 argbuf[i + n] = argbuf[i];
4135 while ((p = strchr (p, ',')) != NULL);
4136 gcc_assert (i == n);
4140 /* Process the spec SPEC and run the commands specified therein.
4141 Returns 0 if the spec is successfully processed; -1 if failed. */
4144 do_spec (const char *spec)
4148 value = do_spec_2 (spec);
4150 /* Force out any unfinished command.
4151 If -pipe, this forces out the last command if it ended in `|'. */
4154 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4157 set_collect_gcc_options ();
4159 if (argbuf_index > 0)
4167 do_spec_2 (const char *spec)
4173 delete_this_arg = 0;
4174 this_is_output_file = 0;
4175 this_is_library_file = 0;
4176 this_is_linker_script = 0;
4177 input_from_pipe = 0;
4178 suffix_subst = NULL;
4180 result = do_spec_1 (spec, 0, NULL);
4188 /* Process the given spec string and add any new options to the end
4189 of the switches/n_switches array. */
4192 do_option_spec (const char *name, const char *spec)
4194 unsigned int i, value_count, value_len;
4195 const char *p, *q, *value;
4196 char *tmp_spec, *tmp_spec_p;
4198 if (configure_default_options[0].name == NULL)
4201 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4202 if (strcmp (configure_default_options[i].name, name) == 0)
4204 if (i == ARRAY_SIZE (configure_default_options))
4207 value = configure_default_options[i].value;
4208 value_len = strlen (value);
4210 /* Compute the size of the final spec. */
4213 while ((p = strstr (p, "%(VALUE)")) != NULL)
4219 /* Replace each %(VALUE) by the specified value. */
4220 tmp_spec = (char *) alloca (strlen (spec) + 1
4221 + value_count * (value_len - strlen ("%(VALUE)")));
4222 tmp_spec_p = tmp_spec;
4224 while ((p = strstr (q, "%(VALUE)")) != NULL)
4226 memcpy (tmp_spec_p, q, p - q);
4227 tmp_spec_p = tmp_spec_p + (p - q);
4228 memcpy (tmp_spec_p, value, value_len);
4229 tmp_spec_p += value_len;
4230 q = p + strlen ("%(VALUE)");
4232 strcpy (tmp_spec_p, q);
4234 do_self_spec (tmp_spec);
4237 /* Process the given spec string and add any new options to the end
4238 of the switches/n_switches array. */
4241 do_self_spec (const char *spec)
4246 do_spec_1 (" ", 0, NULL);
4248 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4249 do_self_specs adds the replacements to switches array, so it shouldn't
4250 be processed afterwards. */
4251 for (i = 0; i < n_switches; i++)
4252 if ((switches[i].live_cond & SWITCH_IGNORE))
4253 switches[i].live_cond |= SWITCH_IGNORE_PERMANENTLY;
4255 if (argbuf_index > 0)
4257 const char **argbuf_copy;
4258 struct cl_decoded_option *decoded_options;
4259 struct cl_option_handlers handlers;
4260 unsigned int decoded_options_count;
4263 /* Create a copy of argbuf with a dummy argv[0] entry for
4264 decode_cmdline_options_to_array. */
4265 argbuf_copy = XNEWVEC (const char *, argbuf_index + 1);
4266 argbuf_copy[0] = "";
4267 memcpy (argbuf_copy + 1, argbuf, argbuf_index * sizeof (const char *));
4269 decode_cmdline_options_to_array (argbuf_index + 1, argbuf_copy,
4270 CL_DRIVER, &decoded_options,
4271 &decoded_options_count);
4273 set_option_handlers (&handlers);
4275 for (j = 1; j < decoded_options_count; j++)
4277 switch (decoded_options[j].opt_index)
4279 case OPT_SPECIAL_input_file:
4280 /* Specs should only generate options, not input
4282 if (strcmp (decoded_options[j].arg, "-") != 0)
4283 fatal_error ("switch %qs does not start with %<-%>",
4284 decoded_options[j].arg);
4286 fatal_error ("spec-generated switch is just %<-%>");
4289 case OPT_fcompare_debug_second:
4290 case OPT_fcompare_debug:
4291 case OPT_fcompare_debug_:
4293 /* Avoid duplicate processing of some options from
4294 compare-debug specs; just save them here. */
4295 save_switch (decoded_options[j].canonical_option[0],
4296 (decoded_options[j].canonical_option_num_elements
4298 &decoded_options[j].canonical_option[1], false);
4302 read_cmdline_option (&global_options, &global_options_set,
4303 decoded_options + j, CL_DRIVER, &handlers,
4310 switches[n_switches].part1 = 0;
4314 /* Callback for processing %D and %I specs. */
4316 struct spec_path_info {
4321 bool separate_options;
4325 spec_path (char *path, void *data)
4327 struct spec_path_info *info = (struct spec_path_info *) data;
4331 if (info->omit_relative && !IS_ABSOLUTE_PATH (path))
4334 if (info->append_len != 0)
4336 len = strlen (path);
4337 memcpy (path + len, info->append, info->append_len + 1);
4340 if (!is_directory (path, true))
4343 do_spec_1 (info->option, 1, NULL);
4344 if (info->separate_options)
4345 do_spec_1 (" ", 0, NULL);
4347 if (info->append_len == 0)
4349 len = strlen (path);
4350 save = path[len - 1];
4351 if (IS_DIR_SEPARATOR (path[len - 1]))
4352 path[len - 1] = '\0';
4355 do_spec_1 (path, 1, NULL);
4356 do_spec_1 (" ", 0, NULL);
4358 /* Must not damage the original path. */
4359 if (info->append_len == 0)
4360 path[len - 1] = save;
4365 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4369 create_at_file (char **argv)
4371 char *temp_file = make_temp_file ("");
4372 char *at_argument = concat ("@", temp_file, NULL);
4373 FILE *f = fopen (temp_file, "w");
4377 fatal_error ("could not open temporary response file %s",
4380 status = writeargv (argv, f);
4383 fatal_error ("could not write to temporary response file %s",
4386 status = fclose (f);
4389 fatal_error ("could not close temporary response file %s",
4392 store_arg (at_argument, 0, 0);
4394 record_temp_file (temp_file, !save_temps_flag, !save_temps_flag);
4397 /* True if we should compile INFILE. */
4400 compile_input_file_p (struct infile *infile)
4402 if ((!infile->language) || (infile->language[0] != '*'))
4403 if (infile->incompiler == input_file_compiler)
4408 /* Process the sub-spec SPEC as a portion of a larger spec.
4409 This is like processing a whole spec except that we do
4410 not initialize at the beginning and we do not supply a
4411 newline by default at the end.
4412 INSWITCH nonzero means don't process %-sequences in SPEC;
4413 in this case, % is treated as an ordinary character.
4414 This is used while substituting switches.
4415 INSWITCH nonzero also causes SPC not to terminate an argument.
4417 Value is zero unless a line was finished
4418 and the command on that line reported an error. */
4421 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4423 const char *p = spec;
4429 /* If substituting a switch, treat all chars like letters.
4430 Otherwise, NL, SPC, TAB and % are special. */
4431 switch (inswitch ? 'a' : c)
4436 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4438 /* A `|' before the newline means use a pipe here,
4439 but only if -pipe was specified.
4440 Otherwise, execute now and don't pass the `|' as an arg. */
4443 input_from_pipe = 1;
4450 set_collect_gcc_options ();
4452 if (argbuf_index > 0)
4458 /* Reinitialize for a new command, and for a new argument. */
4461 delete_this_arg = 0;
4462 this_is_output_file = 0;
4463 this_is_library_file = 0;
4464 this_is_linker_script = 0;
4465 input_from_pipe = 0;
4472 obstack_1grow (&obstack, c);
4480 /* Reinitialize for a new argument. */
4481 delete_this_arg = 0;
4482 this_is_output_file = 0;
4483 this_is_library_file = 0;
4484 this_is_linker_script = 0;
4491 fatal_error ("spec %qs invalid", spec);
4494 if (save_temps_length)
4495 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4497 obstack_grow (&obstack, input_basename, basename_length);
4498 if (compare_debug < 0)
4499 obstack_grow (&obstack, ".gk", 3);
4504 if (save_temps_length)
4505 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4507 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4508 if (compare_debug < 0)
4509 obstack_grow (&obstack, ".gk", 3);
4514 delete_this_arg = 2;
4517 /* Dump out the directories specified with LIBRARY_PATH,
4518 followed by the absolute directories
4519 that we search for startfiles. */
4522 struct spec_path_info info;
4525 info.append_len = 0;
4526 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4527 /* Used on systems which record the specified -L dirs
4528 and use them to search for dynamic linking.
4529 Relative directories always come from -B,
4530 and it is better not to use them for searching
4531 at run time. In particular, stage1 loses. */
4532 info.omit_relative = true;
4534 info.omit_relative = false;
4536 info.separate_options = false;
4538 for_each_path (&startfile_prefixes, true, 0, spec_path, &info);
4543 /* %efoo means report an error with `foo' as error message
4544 and don't execute any more commands for this file. */
4548 while (*p != 0 && *p != '\n')
4550 buf = (char *) alloca (p - q + 1);
4551 strncpy (buf, q, p - q);
4553 error ("%s", _(buf));
4558 /* %nfoo means report a notice with `foo' on stderr. */
4562 while (*p != 0 && *p != '\n')
4564 buf = (char *) alloca (p - q + 1);
4565 strncpy (buf, q, p - q);
4567 inform (0, "%s", _(buf));
4577 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4578 defined, and it is not a directory, and it is
4579 writable, use it. Otherwise, treat this like any
4580 other temporary file. */
4582 if ((!save_temps_flag)
4583 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4584 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4586 obstack_grow (&obstack, HOST_BIT_BUCKET,
4587 strlen (HOST_BIT_BUCKET));
4588 delete_this_arg = 0;
4593 goto create_temp_file;
4597 obstack_1grow (&obstack, '-');
4598 delete_this_arg = 0;
4601 /* consume suffix */
4602 while (*p == '.' || ISALNUM ((unsigned char) *p))
4604 if (p[0] == '%' && p[1] == 'O')
4609 goto create_temp_file;
4613 /* consume suffix */
4614 while (*p == '.' || ISALNUM ((unsigned char) *p))
4616 if (p[0] == '%' && p[1] == 'O')
4621 goto create_temp_file;
4627 struct temp_name *t;
4629 const char *suffix = p;
4630 char *saved_suffix = NULL;
4632 while (*p == '.' || ISALNUM ((unsigned char) *p))
4634 suffix_length = p - suffix;
4635 if (p[0] == '%' && p[1] == 'O')
4638 /* We don't support extra suffix characters after %O. */
4639 if (*p == '.' || ISALNUM ((unsigned char) *p))
4640 fatal_error ("spec %qs has invalid %<%%0%c%>", spec, *p);
4641 if (suffix_length == 0)
4642 suffix = TARGET_OBJECT_SUFFIX;
4646 = XNEWVEC (char, suffix_length
4647 + strlen (TARGET_OBJECT_SUFFIX));
4648 strncpy (saved_suffix, suffix, suffix_length);
4649 strcpy (saved_suffix + suffix_length,
4650 TARGET_OBJECT_SUFFIX);
4652 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4655 if (compare_debug < 0)
4657 suffix = concat (".gk", suffix, NULL);
4661 /* If -save-temps=obj and -o were specified, use that for the
4663 if (save_temps_length)
4666 temp_filename_length
4667 = save_temps_length + suffix_length + 1;
4668 tmp = (char *) alloca (temp_filename_length);
4669 memcpy (tmp, save_temps_prefix, save_temps_length);
4670 memcpy (tmp + save_temps_length, suffix, suffix_length);
4671 tmp[save_temps_length + suffix_length] = '\0';
4672 temp_filename = save_string (tmp,
4673 temp_filename_length + 1);
4674 obstack_grow (&obstack, temp_filename,
4675 temp_filename_length);
4677 delete_this_arg = 0;
4681 /* If the gcc_input_filename has the same suffix specified
4682 for the %g, %u, or %U, and -save-temps is specified,
4683 we could end up using that file as an intermediate
4684 thus clobbering the user's source file (.e.g.,
4685 gcc -save-temps foo.s would clobber foo.s with the
4686 output of cpp0). So check for this condition and
4687 generate a temp file as the intermediate. */
4689 if (save_temps_flag)
4692 temp_filename_length = basename_length + suffix_length + 1;
4693 tmp = (char *) alloca (temp_filename_length);
4694 memcpy (tmp, input_basename, basename_length);
4695 memcpy (tmp + basename_length, suffix, suffix_length);
4696 tmp[basename_length + suffix_length] = '\0';
4697 temp_filename = tmp;
4699 if (strcmp (temp_filename, gcc_input_filename) != 0)
4701 #ifndef HOST_LACKS_INODE_NUMBERS
4702 struct stat st_temp;
4704 /* Note, set_input() resets input_stat_set to 0. */
4705 if (input_stat_set == 0)
4707 input_stat_set = stat (gcc_input_filename,
4709 if (input_stat_set >= 0)
4713 /* If we have the stat for the gcc_input_filename
4714 and we can do the stat for the temp_filename
4715 then the they could still refer to the same
4716 file if st_dev/st_ino's are the same. */
4717 if (input_stat_set != 1
4718 || stat (temp_filename, &st_temp) < 0
4719 || input_stat.st_dev != st_temp.st_dev
4720 || input_stat.st_ino != st_temp.st_ino)
4722 /* Just compare canonical pathnames. */
4723 char* input_realname = lrealpath (gcc_input_filename);
4724 char* temp_realname = lrealpath (temp_filename);
4725 bool files_differ = strcmp (input_realname, temp_realname);
4726 free (input_realname);
4727 free (temp_realname);
4731 temp_filename = save_string (temp_filename,
4732 temp_filename_length + 1);
4733 obstack_grow (&obstack, temp_filename,
4734 temp_filename_length);
4736 delete_this_arg = 0;
4742 /* See if we already have an association of %g/%u/%U and
4744 for (t = temp_names; t; t = t->next)
4745 if (t->length == suffix_length
4746 && strncmp (t->suffix, suffix, suffix_length) == 0
4747 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
4750 /* Make a new association if needed. %u and %j
4752 if (t == 0 || c == 'u' || c == 'j')
4756 t = XNEW (struct temp_name);
4757 t->next = temp_names;
4760 t->length = suffix_length;
4763 t->suffix = saved_suffix;
4764 saved_suffix = NULL;
4767 t->suffix = save_string (suffix, suffix_length);
4768 t->unique = (c == 'u' || c == 'U' || c == 'j');
4769 temp_filename = make_temp_file (t->suffix);
4770 temp_filename_length = strlen (temp_filename);
4771 t->filename = temp_filename;
4772 t->filename_length = temp_filename_length;
4776 free (saved_suffix);
4778 obstack_grow (&obstack, t->filename, t->filename_length);
4779 delete_this_arg = 1;
4787 if (at_file_supplied)
4789 /* We are going to expand `%i' to `@FILE', where FILE
4790 is a newly-created temporary filename. The filenames
4791 that would usually be expanded in place of %o will be
4792 written to the temporary file. */
4797 for (i = 0; i < n_infiles; i++)
4798 if (compile_input_file_p (&infiles[i]))
4801 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
4803 /* Copy the strings over. */
4804 for (i = 0, j = 0; i < n_infiles; i++)
4805 if (compile_input_file_p (&infiles[i]))
4807 argv[j] = CONST_CAST (char *, infiles[i].name);
4808 infiles[i].compiled = true;
4813 create_at_file (argv);
4816 for (i = 0; (int) i < n_infiles; i++)
4817 if (compile_input_file_p (&infiles[i]))
4819 store_arg (infiles[i].name, 0, 0);
4820 infiles[i].compiled = true;
4825 obstack_grow (&obstack, gcc_input_filename,
4826 input_filename_length);
4833 struct spec_path_info info;
4837 do_spec_1 ("-imultilib", 1, NULL);
4838 /* Make this a separate argument. */
4839 do_spec_1 (" ", 0, NULL);
4840 do_spec_1 (multilib_dir, 1, NULL);
4841 do_spec_1 (" ", 0, NULL);
4844 if (gcc_exec_prefix)
4846 do_spec_1 ("-iprefix", 1, NULL);
4847 /* Make this a separate argument. */
4848 do_spec_1 (" ", 0, NULL);
4849 do_spec_1 (gcc_exec_prefix, 1, NULL);
4850 do_spec_1 (" ", 0, NULL);
4853 if (target_system_root_changed ||
4854 (target_system_root && target_sysroot_hdrs_suffix))
4856 do_spec_1 ("-isysroot", 1, NULL);
4857 /* Make this a separate argument. */
4858 do_spec_1 (" ", 0, NULL);
4859 do_spec_1 (target_system_root, 1, NULL);
4860 if (target_sysroot_hdrs_suffix)
4861 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
4862 do_spec_1 (" ", 0, NULL);
4865 info.option = "-isystem";
4866 info.append = "include";
4867 info.append_len = strlen (info.append);
4868 info.omit_relative = false;
4869 info.separate_options = true;
4871 for_each_path (&include_prefixes, false, info.append_len,
4874 info.append = "include-fixed";
4875 if (*sysroot_hdrs_suffix_spec)
4876 info.append = concat (info.append, dir_separator_str,
4877 multilib_dir, NULL);
4878 info.append_len = strlen (info.append);
4879 for_each_path (&include_prefixes, false, info.append_len,
4886 int max = n_infiles;
4887 max += lang_specific_extra_outfiles;
4889 if (HAVE_GNU_LD && at_file_supplied)
4891 /* We are going to expand `%o' to `@FILE', where FILE
4892 is a newly-created temporary filename. The filenames
4893 that would usually be expanded in place of %o will be
4894 written to the temporary file. */
4899 /* Convert OUTFILES into a form suitable for writeargv. */
4901 /* Determine how many are non-NULL. */
4902 for (n_files = 0, i = 0; i < max; i++)
4903 n_files += outfiles[i] != NULL;
4905 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
4907 /* Copy the strings over. */
4908 for (i = 0, j = 0; i < max; i++)
4911 argv[j] = CONST_CAST (char *, outfiles[i]);
4916 create_at_file (argv);
4919 for (i = 0; i < max; i++)
4921 store_arg (outfiles[i], 0, 0);
4926 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4931 this_is_library_file = 1;
4935 this_is_linker_script = 1;
4939 outfiles[input_file_number] = NULL;
4943 this_is_output_file = 1;
4948 int cur_index = argbuf_index;
4949 /* Handle the {...} following the %W. */
4951 fatal_error ("spec %qs has invalid %<%%W%c%>", spec, *p);
4952 p = handle_braces (p + 1);
4956 /* If any args were output, mark the last one for deletion
4958 if (argbuf_index != cur_index)
4959 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
4963 /* %x{OPTION} records OPTION for %X to output. */
4969 /* Skip past the option value and make a copy. */
4971 fatal_error ("spec %qs has invalid %<%%x%c%>", spec, *p);
4974 string = save_string (p1 + 1, p - p1 - 2);
4976 /* See if we already recorded this option. */
4977 for (i = 0; i < n_linker_options; i++)
4978 if (! strcmp (string, linker_options[i]))
4984 /* This option is new; add it. */
4985 add_linker_option (string, strlen (string));
4989 /* Dump out the options accumulated previously using %x. */
4991 for (i = 0; i < n_linker_options; i++)
4993 do_spec_1 (linker_options[i], 1, NULL);
4994 /* Make each accumulated option a separate argument. */
4995 do_spec_1 (" ", 0, NULL);
4999 /* Dump out the options accumulated previously using -Wa,. */
5001 for (i = 0; i < n_assembler_options; i++)
5003 do_spec_1 (assembler_options[i], 1, NULL);
5004 /* Make each accumulated option a separate argument. */
5005 do_spec_1 (" ", 0, NULL);
5009 /* Dump out the options accumulated previously using -Wp,. */
5011 for (i = 0; i < n_preprocessor_options; i++)
5013 do_spec_1 (preprocessor_options[i], 1, NULL);
5014 /* Make each accumulated option a separate argument. */
5015 do_spec_1 (" ", 0, NULL);
5019 /* Here are digits and numbers that just process
5020 a certain constant string as a spec. */
5023 value = do_spec_1 (cc1_spec, 0, NULL);
5029 value = do_spec_1 (cc1plus_spec, 0, NULL);
5035 value = do_spec_1 (asm_spec, 0, NULL);
5041 value = do_spec_1 (asm_final_spec, 0, NULL);
5048 const char *const spec
5049 = (input_file_compiler->cpp_spec
5050 ? input_file_compiler->cpp_spec
5052 value = do_spec_1 (spec, 0, NULL);
5059 value = do_spec_1 (endfile_spec, 0, NULL);
5065 value = do_spec_1 (link_spec, 0, NULL);
5071 value = do_spec_1 (lib_spec, 0, NULL);
5077 value = do_spec_1 (libgcc_spec, 0, NULL);
5083 /* We assume there is a directory
5084 separator at the end of this string. */
5085 if (target_system_root)
5087 obstack_grow (&obstack, target_system_root,
5088 strlen (target_system_root));
5089 if (target_sysroot_suffix)
5090 obstack_grow (&obstack, target_sysroot_suffix,
5091 strlen (target_sysroot_suffix));
5096 value = do_spec_1 (startfile_spec, 0, NULL);
5101 /* Here we define characters other than letters and digits. */
5104 p = handle_braces (p);
5110 p = handle_spec_function (p);
5116 obstack_1grow (&obstack, '%');
5123 while (p[len] && p[len] != ' ' && p[len] != '%')
5125 suffix_subst = save_string (p - 1, len + 1);
5130 /* Henceforth ignore the option(s) matching the pattern
5135 int have_wildcard = 0;
5138 while (p[len] && p[len] != ' ' && p[len] != '\t')
5141 if (p[len-1] == '*')
5144 for (i = 0; i < n_switches; i++)
5145 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5146 && (have_wildcard || switches[i].part1[len] == '\0'))
5148 switches[i].live_cond |= SWITCH_IGNORE;
5149 switches[i].validated = 1;
5157 if (soft_matched_part)
5159 do_spec_1 (soft_matched_part, 1, NULL);
5160 do_spec_1 (" ", 0, NULL);
5163 /* Catch the case where a spec string contains something like
5164 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5165 hand side of the :. */
5166 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5169 /* Process a string found as the value of a spec given by name.
5170 This feature allows individual machine descriptions
5171 to add and use their own specs.
5172 %[...] modifies -D options the way %P does;
5173 %(...) uses the spec unmodified. */
5175 warning (0, "use of obsolete %%[ operator in specs");
5178 const char *name = p;
5179 struct spec_list *sl;
5182 /* The string after the S/P is the name of a spec that is to be
5184 while (*p && *p != ')' && *p != ']')
5187 /* See if it's in the list. */
5188 for (len = p - name, sl = specs; sl; sl = sl->next)
5189 if (sl->name_len == len && !strncmp (sl->name, name, len))
5191 name = *(sl->ptr_spec);
5193 fnotice (stderr, "Processing spec %c%s%c, which is '%s'\n",
5194 c, sl->name, (c == '(') ? ')' : ']', name);
5203 value = do_spec_1 (name, 0, NULL);
5209 char *x = (char *) alloca (strlen (name) * 2 + 1);
5211 const char *y = name;
5214 /* Copy all of NAME into BUF, but put __ after
5215 every -D and at the end of each arg. */
5218 if (! strncmp (y, "-D", 2))
5229 && (*y == ' ' || *y == '\t' || *y == '='
5230 || *y == '}' || *y == 0))
5243 value = do_spec_1 (buf, 0, NULL);
5249 /* Discard the closing paren or bracket. */
5256 error ("spec failure: unrecognized spec option %qc", c);
5262 /* Backslash: treat next character as ordinary. */
5267 /* Ordinary character: put it into the current argument. */
5268 obstack_1grow (&obstack, c);
5272 /* End of string. If we are processing a spec function, we need to
5273 end any pending argument. */
5274 if (processing_spec_function)
5280 /* Look up a spec function. */
5282 static const struct spec_function *
5283 lookup_spec_function (const char *name)
5285 const struct spec_function *sf;
5287 for (sf = static_spec_functions; sf->name != NULL; sf++)
5288 if (strcmp (sf->name, name) == 0)
5294 /* Evaluate a spec function. */
5297 eval_spec_function (const char *func, const char *args)
5299 const struct spec_function *sf;
5300 const char *funcval;
5302 /* Saved spec processing context. */
5303 int save_argbuf_index;
5304 int save_argbuf_length;
5305 const char **save_argbuf;
5308 int save_delete_this_arg;
5309 int save_this_is_output_file;
5310 int save_this_is_library_file;
5311 int save_input_from_pipe;
5312 int save_this_is_linker_script;
5313 const char *save_suffix_subst;
5316 sf = lookup_spec_function (func);
5318 fatal_error ("unknown spec function %qs", func);
5320 /* Push the spec processing context. */
5321 save_argbuf_index = argbuf_index;
5322 save_argbuf_length = argbuf_length;
5323 save_argbuf = argbuf;
5325 save_arg_going = arg_going;
5326 save_delete_this_arg = delete_this_arg;
5327 save_this_is_output_file = this_is_output_file;
5328 save_this_is_library_file = this_is_library_file;
5329 save_this_is_linker_script = this_is_linker_script;
5330 save_input_from_pipe = input_from_pipe;
5331 save_suffix_subst = suffix_subst;
5333 /* Create a new spec processing context, and build the function
5337 if (do_spec_2 (args) < 0)
5338 fatal_error ("error in args to spec function %qs", func);
5340 /* argbuf_index is an index for the next argument to be inserted, and
5341 so contains the count of the args already inserted. */
5343 funcval = (*sf->func) (argbuf_index, argbuf);
5345 /* Pop the spec processing context. */
5346 argbuf_index = save_argbuf_index;
5347 argbuf_length = save_argbuf_length;
5349 argbuf = save_argbuf;
5351 arg_going = save_arg_going;
5352 delete_this_arg = save_delete_this_arg;
5353 this_is_output_file = save_this_is_output_file;
5354 this_is_library_file = save_this_is_library_file;
5355 this_is_linker_script = save_this_is_linker_script;
5356 input_from_pipe = save_input_from_pipe;
5357 suffix_subst = save_suffix_subst;
5362 /* Handle a spec function call of the form:
5366 ARGS is processed as a spec in a separate context and split into an
5367 argument vector in the normal fashion. The function returns a string
5368 containing a spec which we then process in the caller's context, or
5369 NULL if no processing is required. */
5372 handle_spec_function (const char *p)
5375 const char *endp, *funcval;
5378 processing_spec_function++;
5380 /* Get the function name. */
5381 for (endp = p; *endp != '\0'; endp++)
5383 if (*endp == '(') /* ) */
5385 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5386 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5387 fatal_error ("malformed spec function name");
5389 if (*endp != '(') /* ) */
5390 fatal_error ("no arguments for spec function");
5391 func = save_string (p, endp - p);
5394 /* Get the arguments. */
5395 for (count = 0; *endp != '\0'; endp++)
5404 else if (*endp == '(') /* ) */
5409 fatal_error ("malformed spec function arguments");
5410 args = save_string (p, endp - p);
5413 /* p now points to just past the end of the spec function expression. */
5415 funcval = eval_spec_function (func, args);
5416 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5422 processing_spec_function--;
5427 /* Inline subroutine of handle_braces. Returns true if the current
5428 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5430 input_suffix_matches (const char *atom, const char *end_atom)
5432 return (input_suffix
5433 && !strncmp (input_suffix, atom, end_atom - atom)
5434 && input_suffix[end_atom - atom] == '\0');
5437 /* Subroutine of handle_braces. Returns true if the current
5438 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5440 input_spec_matches (const char *atom, const char *end_atom)
5442 return (input_file_compiler
5443 && input_file_compiler->suffix
5444 && input_file_compiler->suffix[0] != '\0'
5445 && !strncmp (input_file_compiler->suffix + 1, atom,
5447 && input_file_compiler->suffix[end_atom - atom + 1] == '\0');
5450 /* Subroutine of handle_braces. Returns true if a switch
5451 matching the atom bracketed by ATOM and END_ATOM appeared on the
5454 switch_matches (const char *atom, const char *end_atom, int starred)
5457 int len = end_atom - atom;
5458 int plen = starred ? len : -1;
5460 for (i = 0; i < n_switches; i++)
5461 if (!strncmp (switches[i].part1, atom, len)
5462 && (starred || switches[i].part1[len] == '\0')
5463 && check_live_switch (i, plen))
5469 /* Inline subroutine of handle_braces. Mark all of the switches which
5470 match ATOM (extends to END_ATOM; STARRED indicates whether there
5471 was a star after the atom) for later processing. */
5473 mark_matching_switches (const char *atom, const char *end_atom, int starred)
5476 int len = end_atom - atom;
5477 int plen = starred ? len : -1;
5479 for (i = 0; i < n_switches; i++)
5480 if (!strncmp (switches[i].part1, atom, len)
5481 && (starred || switches[i].part1[len] == '\0')
5482 && check_live_switch (i, plen))
5483 switches[i].ordering = 1;
5486 /* Inline subroutine of handle_braces. Process all the currently
5487 marked switches through give_switch, and clear the marks. */
5489 process_marked_switches (void)
5493 for (i = 0; i < n_switches; i++)
5494 if (switches[i].ordering == 1)
5496 switches[i].ordering = 0;
5501 /* Handle a %{ ... } construct. P points just inside the leading {.
5502 Returns a pointer one past the end of the brace block, or 0
5503 if we call do_spec_1 and that returns -1. */
5506 handle_braces (const char *p)
5508 const char *atom, *end_atom;
5509 const char *d_atom = NULL, *d_end_atom = NULL;
5510 const char *orig = p;
5518 bool a_must_be_last = false;
5519 bool ordered_set = false;
5520 bool disjunct_set = false;
5521 bool disj_matched = false;
5522 bool disj_starred = true;
5523 bool n_way_choice = false;
5524 bool n_way_matched = false;
5526 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5533 /* Scan one "atom" (S in the description above of %{}, possibly
5534 with '!', '.', '@', ',', or '*' modifiers). */
5536 a_is_suffix = false;
5537 a_is_starred = false;
5538 a_is_negated = false;
5539 a_is_spectype = false;
5543 p++, a_is_negated = true;
5547 p++, a_is_suffix = true;
5549 p++, a_is_spectype = true;
5552 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5553 || *p == ',' || *p == '.' || *p == '@')
5558 p++, a_is_starred = 1;
5564 /* Substitute the switch(es) indicated by the current atom. */
5566 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5567 || a_is_spectype || atom == end_atom)
5570 mark_matching_switches (atom, end_atom, a_is_starred);
5573 process_marked_switches ();
5577 /* Substitute some text if the current atom appears as a switch
5579 disjunct_set = true;
5583 if (atom == end_atom)
5585 if (!n_way_choice || disj_matched || *p == '|'
5586 || a_is_negated || a_is_suffix || a_is_spectype
5590 /* An empty term may appear as the last choice of an
5591 N-way choice set; it means "otherwise". */
5592 a_must_be_last = true;
5593 disj_matched = !n_way_matched;
5594 disj_starred = false;
5598 if ((a_is_suffix || a_is_spectype) && a_is_starred)
5602 disj_starred = false;
5604 /* Don't bother testing this atom if we already have a
5606 if (!disj_matched && !n_way_matched)
5609 a_matched = input_suffix_matches (atom, end_atom);
5610 else if (a_is_spectype)
5611 a_matched = input_spec_matches (atom, end_atom);
5613 a_matched = switch_matches (atom, end_atom, a_is_starred);
5615 if (a_matched != a_is_negated)
5617 disj_matched = true;
5619 d_end_atom = end_atom;
5626 /* Found the body, that is, the text to substitute if the
5627 current disjunction matches. */
5628 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5629 disj_matched && !n_way_matched);
5633 /* If we have an N-way choice, reset state for the next
5637 n_way_choice = true;
5638 n_way_matched |= disj_matched;
5639 disj_matched = false;
5640 disj_starred = true;
5641 d_atom = d_end_atom = NULL;
5650 while (*p++ != '}');
5655 fatal_error ("braced spec %qs is invalid at %qc", orig, *p);
5660 /* Subroutine of handle_braces. Scan and process a brace substitution body
5661 (X in the description of %{} syntax). P points one past the colon;
5662 ATOM and END_ATOM bracket the first atom which was found to be true
5663 (present) in the current disjunction; STARRED indicates whether all
5664 the atoms in the current disjunction were starred (for syntax validation);
5665 MATCHED indicates whether the disjunction matched or not, and therefore
5666 whether or not the body is to be processed through do_spec_1 or just
5667 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5671 process_brace_body (const char *p, const char *atom, const char *end_atom,
5672 int starred, int matched)
5674 const char *body, *end_body;
5675 unsigned int nesting_level;
5676 bool have_subst = false;
5678 /* Locate the closing } or ;, honoring nested braces.
5679 Trim trailing whitespace. */
5688 if (!--nesting_level)
5691 else if (*p == ';' && nesting_level == 1)
5693 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
5695 else if (*p == '\0')
5701 while (end_body[-1] == ' ' || end_body[-1] == '\t')
5704 if (have_subst && !starred)
5709 /* Copy the substitution body to permanent storage and execute it.
5710 If have_subst is false, this is a simple matter of running the
5711 body through do_spec_1... */
5712 char *string = save_string (body, end_body - body);
5715 if (do_spec_1 (string, 0, NULL) < 0)
5720 /* ... but if have_subst is true, we have to process the
5721 body once for each matching switch, with %* set to the
5722 variant part of the switch. */
5723 unsigned int hard_match_len = end_atom - atom;
5726 for (i = 0; i < n_switches; i++)
5727 if (!strncmp (switches[i].part1, atom, hard_match_len)
5728 && check_live_switch (i, hard_match_len))
5730 if (do_spec_1 (string, 0,
5731 &switches[i].part1[hard_match_len]) < 0)
5733 /* Pass any arguments this switch has. */
5735 suffix_subst = NULL;
5743 fatal_error ("braced spec body %qs is invalid", body);
5746 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5747 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5748 spec, or -1 if either exact match or %* is used.
5750 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5751 whose value does not begin with "no-" is obsoleted by the same value
5752 with the "no-", similarly for a switch with the "no-" prefix. */
5755 check_live_switch (int switchnum, int prefix_length)
5757 const char *name = switches[switchnum].part1;
5760 /* If we already processed this switch and determined if it was
5761 live or not, return our past determination. */
5762 if (switches[switchnum].live_cond != 0)
5763 return ((switches[switchnum].live_cond & SWITCH_LIVE) != 0
5764 && (switches[switchnum].live_cond & SWITCH_FALSE) == 0
5765 && (switches[switchnum].live_cond & SWITCH_IGNORE_PERMANENTLY)
5768 /* In the common case of {<at-most-one-letter>*}, a negating
5769 switch would always match, so ignore that case. We will just
5770 send the conflicting switches to the compiler phase. */
5771 if (prefix_length >= 0 && prefix_length <= 1)
5774 /* Now search for duplicate in a manner that depends on the name. */
5778 for (i = switchnum + 1; i < n_switches; i++)
5779 if (switches[i].part1[0] == 'O')
5781 switches[switchnum].validated = 1;
5782 switches[switchnum].live_cond = SWITCH_FALSE;
5787 case 'W': case 'f': case 'm':
5788 if (! strncmp (name + 1, "no-", 3))
5790 /* We have Xno-YYY, search for XYYY. */
5791 for (i = switchnum + 1; i < n_switches; i++)
5792 if (switches[i].part1[0] == name[0]
5793 && ! strcmp (&switches[i].part1[1], &name[4]))
5795 switches[switchnum].validated = 1;
5796 switches[switchnum].live_cond = SWITCH_FALSE;
5802 /* We have XYYY, search for Xno-YYY. */
5803 for (i = switchnum + 1; i < n_switches; i++)
5804 if (switches[i].part1[0] == name[0]
5805 && switches[i].part1[1] == 'n'
5806 && switches[i].part1[2] == 'o'
5807 && switches[i].part1[3] == '-'
5808 && !strcmp (&switches[i].part1[4], &name[1]))
5810 switches[switchnum].validated = 1;
5811 switches[switchnum].live_cond = SWITCH_FALSE;
5818 /* Otherwise the switch is live. */
5819 switches[switchnum].live_cond |= SWITCH_LIVE;
5823 /* Pass a switch to the current accumulating command
5824 in the same form that we received it.
5825 SWITCHNUM identifies the switch; it is an index into
5826 the vector of switches gcc received, which is `switches'.
5827 This cannot fail since it never finishes a command line.
5829 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5832 give_switch (int switchnum, int omit_first_word)
5834 if ((switches[switchnum].live_cond & SWITCH_IGNORE) != 0)
5837 if (!omit_first_word)
5839 do_spec_1 ("-", 0, NULL);
5840 do_spec_1 (switches[switchnum].part1, 1, NULL);
5843 if (switches[switchnum].args != 0)
5846 for (p = switches[switchnum].args; *p; p++)
5848 const char *arg = *p;
5850 do_spec_1 (" ", 0, NULL);
5853 unsigned length = strlen (arg);
5856 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5857 if (arg[length] == '.')
5859 (CONST_CAST(char *, arg))[length] = 0;
5863 do_spec_1 (arg, 1, NULL);
5865 (CONST_CAST(char *, arg))[length] = '.';
5866 do_spec_1 (suffix_subst, 1, NULL);
5869 do_spec_1 (arg, 1, NULL);
5873 do_spec_1 (" ", 0, NULL);
5874 switches[switchnum].validated = 1;
5877 /* Search for a file named NAME trying various prefixes including the
5878 user's -B prefix and some standard ones.
5879 Return the absolute file name found. If nothing is found, return NAME. */
5882 find_file (const char *name)
5884 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true);
5885 return newname ? newname : name;
5888 /* Determine whether a directory exists. If LINKER, return 0 for
5889 certain fixed names not needed by the linker. */
5892 is_directory (const char *path1, bool linker)
5899 /* Ensure the string ends with "/.". The resulting path will be a
5900 directory even if the given path is a symbolic link. */
5901 len1 = strlen (path1);
5902 path = (char *) alloca (3 + len1);
5903 memcpy (path, path1, len1);
5905 if (!IS_DIR_SEPARATOR (cp[-1]))
5906 *cp++ = DIR_SEPARATOR;
5910 /* Exclude directories that the linker is known to search. */
5912 && IS_DIR_SEPARATOR (path[0])
5914 && strncmp (path + 1, "lib", 3) == 0)
5916 && strncmp (path + 1, "usr", 3) == 0
5917 && IS_DIR_SEPARATOR (path[4])
5918 && strncmp (path + 5, "lib", 3) == 0)))
5921 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5924 /* Set up the various global variables to indicate that we're processing
5925 the input file named FILENAME. */
5928 set_input (const char *filename)
5932 gcc_input_filename = filename;
5933 input_filename_length = strlen (gcc_input_filename);
5934 input_basename = lbasename (gcc_input_filename);
5936 /* Find a suffix starting with the last period,
5937 and set basename_length to exclude that suffix. */
5938 basename_length = strlen (input_basename);
5939 suffixed_basename_length = basename_length;
5940 p = input_basename + basename_length;
5941 while (p != input_basename && *p != '.')
5943 if (*p == '.' && p != input_basename)
5945 basename_length = p - input_basename;
5946 input_suffix = p + 1;
5951 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5952 we will need to do a stat on the gcc_input_filename. The
5953 INPUT_STAT_SET signals that the stat is needed. */
5957 /* On fatal signals, delete all the temporary files. */
5960 fatal_signal (int signum)
5962 signal (signum, SIG_DFL);
5963 delete_failure_queue ();
5964 delete_temp_files ();
5965 /* Get the same signal again, this time not handled,
5966 so its normal effect occurs. */
5967 kill (getpid (), signum);
5970 /* Compare the contents of the two files named CMPFILE[0] and
5971 CMPFILE[1]. Return zero if they're identical, nonzero
5975 compare_files (char *cmpfile[])
5978 FILE *temp[2] = { NULL, NULL };
5984 void *map[2] = { NULL, NULL };
5986 for (i = 0; i < 2; i++)
5990 if (stat (cmpfile[i], &st) < 0 || !S_ISREG (st.st_mode))
5992 error ("%s: could not determine length of compare-debug file %s",
5993 gcc_input_filename, cmpfile[i]);
5998 length[i] = st.st_size;
6001 if (!ret && length[0] != length[1])
6003 error ("%s: -fcompare-debug failure (length)", gcc_input_filename);
6008 for (i = 0; i < 2; i++)
6010 int fd = open (cmpfile[i], O_RDONLY);
6013 error ("%s: could not open compare-debug file %s",
6014 gcc_input_filename, cmpfile[i]);
6019 map[i] = mmap (NULL, length[i], PROT_READ, MAP_PRIVATE, fd, 0);
6022 if (map[i] == (void *) MAP_FAILED)
6031 if (memcmp (map[0], map[1], length[0]) != 0)
6033 error ("%s: -fcompare-debug failure", gcc_input_filename);
6038 for (i = 0; i < 2; i++)
6040 munmap ((caddr_t) map[i], length[i]);
6049 for (i = 0; i < 2; i++)
6051 temp[i] = fopen (cmpfile[i], "r");
6054 error ("%s: could not open compare-debug file %s",
6055 gcc_input_filename, cmpfile[i]);
6061 if (!ret && temp[0] && temp[1])
6065 c0 = fgetc (temp[0]);
6066 c1 = fgetc (temp[1]);
6070 error ("%s: -fcompare-debug failure",
6071 gcc_input_filename);
6080 for (i = 1; i >= 0; i--)
6089 extern int main (int, char **);
6092 main (int argc, char **argv)
6096 int linker_was_run = 0;
6097 int lang_n_infiles = 0;
6098 int num_linker_inputs = 0;
6099 char *explicit_link_files;
6102 struct user_specs *uptr;
6103 char **old_argv = argv;
6104 struct cl_decoded_option *decoded_options;
6105 unsigned int decoded_options_count;
6107 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
6108 on ?: in file-scope variable initializations. */
6109 asm_debug = ASM_DEBUG_SPEC;
6111 p = argv[0] + strlen (argv[0]);
6112 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
6116 xmalloc_set_program_name (progname);
6118 expandargv (&argc, &argv);
6120 /* Determine if any expansions were made. */
6121 if (argv != old_argv)
6122 at_file_supplied = true;
6124 global_options = global_options_init;
6126 decode_cmdline_options_to_array (argc, CONST_CAST2 (const char **, char **,
6129 &decoded_options, &decoded_options_count);
6131 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6132 /* Perform host dependent initialization when needed. */
6133 GCC_DRIVER_HOST_INITIALIZATION;
6136 /* Unlock the stdio streams. */
6137 unlock_std_streams ();
6139 gcc_init_libintl ();
6141 diagnostic_initialize (global_dc, 0);
6142 if (atexit (delete_temp_files) != 0)
6143 fatal_error ("atexit failed");
6145 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
6146 signal (SIGINT, fatal_signal);
6148 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
6149 signal (SIGHUP, fatal_signal);
6151 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
6152 signal (SIGTERM, fatal_signal);
6154 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
6155 signal (SIGPIPE, fatal_signal);
6158 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6159 receive the signal. A different setting is inheritable */
6160 signal (SIGCHLD, SIG_DFL);
6163 /* Allocate the argument vector. */
6166 obstack_init (&obstack);
6168 /* Build multilib_select, et. al from the separate lines that make up each
6169 multilib selection. */
6171 const char *const *q = multilib_raw;
6174 obstack_init (&multilib_obstack);
6175 while ((p = *q++) != (char *) 0)
6176 obstack_grow (&multilib_obstack, p, strlen (p));
6178 obstack_1grow (&multilib_obstack, 0);
6179 multilib_select = XOBFINISH (&multilib_obstack, const char *);
6181 q = multilib_matches_raw;
6182 while ((p = *q++) != (char *) 0)
6183 obstack_grow (&multilib_obstack, p, strlen (p));
6185 obstack_1grow (&multilib_obstack, 0);
6186 multilib_matches = XOBFINISH (&multilib_obstack, const char *);
6188 q = multilib_exclusions_raw;
6189 while ((p = *q++) != (char *) 0)
6190 obstack_grow (&multilib_obstack, p, strlen (p));
6192 obstack_1grow (&multilib_obstack, 0);
6193 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *);
6196 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
6199 obstack_1grow (&multilib_obstack, ' ');
6200 obstack_grow (&multilib_obstack,
6201 multilib_defaults_raw[i],
6202 strlen (multilib_defaults_raw[i]));
6206 obstack_1grow (&multilib_obstack, 0);
6207 multilib_defaults = XOBFINISH (&multilib_obstack, const char *);
6210 #ifdef INIT_ENVIRONMENT
6211 /* Set up any other necessary machine specific environment variables. */
6212 xputenv (INIT_ENVIRONMENT);
6215 /* Make a table of what switches there are (switches, n_switches).
6216 Make a table of specified input files (infiles, n_infiles).
6217 Decode switches that are handled locally. */
6219 process_command (decoded_options_count, decoded_options);
6221 /* Initialize the vector of specs to just the default.
6222 This means one element containing 0s, as a terminator. */
6224 compilers = XNEWVAR (struct compiler, sizeof default_compilers);
6225 memcpy (compilers, default_compilers, sizeof default_compilers);
6226 n_compilers = n_default_compilers;
6228 /* Read specs from a file if there is one. */
6230 machine_suffix = concat (spec_machine, dir_separator_str,
6231 spec_version, dir_separator_str, NULL);
6232 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6234 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true);
6235 /* Read the specs file unless it is a default one. */
6236 if (specs_file != 0 && strcmp (specs_file, "specs"))
6237 read_specs (specs_file, TRUE);
6241 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6242 for any override of as, ld and libraries. */
6243 specs_file = (char *) alloca (strlen (standard_exec_prefix)
6244 + strlen (just_machine_suffix) + sizeof ("specs"));
6246 strcpy (specs_file, standard_exec_prefix);
6247 strcat (specs_file, just_machine_suffix);
6248 strcat (specs_file, "specs");
6249 if (access (specs_file, R_OK) == 0)
6250 read_specs (specs_file, TRUE);
6252 /* Process any configure-time defaults specified for the command line
6253 options, via OPTION_DEFAULT_SPECS. */
6254 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6255 do_option_spec (option_default_specs[i].name,
6256 option_default_specs[i].spec);
6258 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6259 of the command line. */
6261 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6262 do_self_spec (driver_self_specs[i]);
6266 enum save_temps save;
6268 if (!compare_debug_second)
6270 n_switches_debug_check[1] = n_switches;
6271 n_switches_alloc_debug_check[1] = n_switches_alloc;
6272 switches_debug_check[1] = XDUPVEC (struct switchstr, switches,
6275 do_self_spec ("%:compare-debug-self-opt()");
6276 n_switches_debug_check[0] = n_switches;
6277 n_switches_alloc_debug_check[0] = n_switches_alloc;
6278 switches_debug_check[0] = switches;
6280 n_switches = n_switches_debug_check[1];
6281 n_switches_alloc = n_switches_alloc_debug_check[1];
6282 switches = switches_debug_check[1];
6285 /* Avoid crash when computing %j in this early. */
6286 save = save_temps_flag;
6287 save_temps_flag = SAVE_TEMPS_NONE;
6289 compare_debug = -compare_debug;
6290 do_self_spec ("%:compare-debug-self-opt()");
6292 save_temps_flag = save;
6294 if (!compare_debug_second)
6296 n_switches_debug_check[1] = n_switches;
6297 n_switches_alloc_debug_check[1] = n_switches_alloc;
6298 switches_debug_check[1] = switches;
6299 compare_debug = -compare_debug;
6300 n_switches = n_switches_debug_check[0];
6301 n_switches_alloc = n_switches_debug_check[0];
6302 switches = switches_debug_check[0];
6306 /* If not cross-compiling, look for executables in the standard
6308 if (*cross_compile == '0')
6310 if (*md_exec_prefix)
6312 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6313 PREFIX_PRIORITY_LAST, 0, 0);
6317 /* Process sysroot_suffix_spec. */
6318 if (*sysroot_suffix_spec != 0
6319 && do_spec_2 (sysroot_suffix_spec) == 0)
6321 if (argbuf_index > 1)
6322 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6323 else if (argbuf_index == 1)
6324 target_sysroot_suffix = xstrdup (argbuf[argbuf_index -1]);
6327 #ifdef HAVE_LD_SYSROOT
6328 /* Pass the --sysroot option to the linker, if it supports that. If
6329 there is a sysroot_suffix_spec, it has already been processed by
6330 this point, so target_system_root really is the system root we
6332 if (target_system_root)
6334 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6335 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
6336 set_spec ("link", XOBFINISH (&obstack, const char *));
6340 /* Process sysroot_hdrs_suffix_spec. */
6341 if (*sysroot_hdrs_suffix_spec != 0
6342 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6344 if (argbuf_index > 1)
6345 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6346 else if (argbuf_index == 1)
6347 target_sysroot_hdrs_suffix = xstrdup (argbuf[argbuf_index -1]);
6350 /* Look for startfiles in the standard places. */
6351 if (*startfile_prefix_spec != 0
6352 && do_spec_2 (startfile_prefix_spec) == 0
6353 && do_spec_1 (" ", 0, NULL) == 0)
6356 for (ndx = 0; ndx < argbuf_index; ndx++)
6357 add_sysrooted_prefix (&startfile_prefixes, argbuf[ndx], "BINUTILS",
6358 PREFIX_PRIORITY_LAST, 0, 1);
6360 /* We should eventually get rid of all these and stick to
6361 startfile_prefix_spec exclusively. */
6362 else if (*cross_compile == '0' || target_system_root)
6364 if (*md_startfile_prefix)
6365 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6366 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6368 if (*md_startfile_prefix_1)
6369 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6370 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6372 /* If standard_startfile_prefix is relative, base it on
6373 standard_exec_prefix. This lets us move the installed tree
6374 as a unit. If GCC_EXEC_PREFIX is defined, base
6375 standard_startfile_prefix on that as well.
6377 If the prefix is relative, only search it for native compilers;
6378 otherwise we will search a directory containing host libraries. */
6379 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
6380 add_sysrooted_prefix (&startfile_prefixes,
6381 standard_startfile_prefix, "BINUTILS",
6382 PREFIX_PRIORITY_LAST, 0, 1);
6383 else if (*cross_compile == '0')
6385 add_prefix (&startfile_prefixes,
6386 concat (gcc_exec_prefix
6387 ? gcc_exec_prefix : standard_exec_prefix,
6389 standard_startfile_prefix, NULL),
6390 NULL, PREFIX_PRIORITY_LAST, 0, 1);
6393 /* Sysrooted prefixes are relocated because target_system_root is
6394 also relocated by gcc_exec_prefix. */
6395 if (*standard_startfile_prefix_1)
6396 add_sysrooted_prefix (&startfile_prefixes,
6397 standard_startfile_prefix_1, "BINUTILS",
6398 PREFIX_PRIORITY_LAST, 0, 1);
6399 if (*standard_startfile_prefix_2)
6400 add_sysrooted_prefix (&startfile_prefixes,
6401 standard_startfile_prefix_2, "BINUTILS",
6402 PREFIX_PRIORITY_LAST, 0, 1);
6405 /* Process any user specified specs in the order given on the command
6407 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6409 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6411 read_specs (filename ? filename : uptr->filename, FALSE);
6414 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6415 if (gcc_exec_prefix)
6416 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6417 spec_version, dir_separator_str, NULL);
6419 /* Now we have the specs.
6420 Set the `valid' bits for switches that match anything in any spec. */
6422 validate_all_switches ();
6424 /* Now that we have the switches and the specs, set
6425 the subdirectory based on the options. */
6426 set_multilib_dir ();
6428 /* Set up to remember the pathname of gcc and any options
6429 needed for collect. We use argv[0] instead of progname because
6430 we need the complete pathname. */
6431 obstack_init (&collect_obstack);
6432 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6433 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6434 xputenv (XOBFINISH (&collect_obstack, char *));
6436 /* Set up to remember the pathname of the lto wrapper. */
6438 lto_wrapper_spec = find_a_file (&exec_prefixes, "lto-wrapper", X_OK, false);
6439 if (lto_wrapper_spec)
6441 obstack_init (&collect_obstack);
6442 obstack_grow (&collect_obstack, "COLLECT_LTO_WRAPPER=",
6443 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
6444 obstack_grow (&collect_obstack, lto_wrapper_spec,
6445 strlen (lto_wrapper_spec) + 1);
6446 xputenv (XOBFINISH (&collect_obstack, char *));
6449 /* Warn about any switches that no pass was interested in. */
6451 for (i = 0; (int) i < n_switches; i++)
6452 if (! switches[i].validated)
6453 error ("unrecognized option %<-%s%>", switches[i].part1);
6455 /* Obey some of the options. */
6457 if (print_search_dirs)
6459 printf (_("install: %s%s\n"),
6460 gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
6461 gcc_exec_prefix ? "" : machine_suffix);
6462 printf (_("programs: %s\n"),
6463 build_search_list (&exec_prefixes, "", false, false));
6464 printf (_("libraries: %s\n"),
6465 build_search_list (&startfile_prefixes, "", false, true));
6469 if (print_file_name)
6471 printf ("%s\n", find_file (print_file_name));
6475 if (print_prog_name)
6477 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6478 printf ("%s\n", (newname ? newname : print_prog_name));
6482 if (print_multi_lib)
6484 print_multilib_info ();
6488 if (print_multi_directory)
6490 if (multilib_dir == NULL)
6493 printf ("%s\n", multilib_dir);
6499 if (target_system_root)
6501 if (target_sysroot_suffix)
6502 printf ("%s%s\n", target_system_root, target_sysroot_suffix);
6504 printf ("%s\n", target_system_root);
6509 if (print_multi_os_directory)
6511 if (multilib_os_dir == NULL)
6514 printf ("%s\n", multilib_os_dir);
6518 if (print_sysroot_headers_suffix)
6520 if (*sysroot_hdrs_suffix_spec)
6522 printf("%s\n", (target_sysroot_hdrs_suffix
6523 ? target_sysroot_hdrs_suffix
6528 /* The error status indicates that only one set of fixed
6529 headers should be built. */
6530 fatal_error ("not configured with sysroot headers suffix");
6533 if (print_help_list)
6539 printf (_("\nFor bug reporting instructions, please see:\n"));
6540 printf ("%s.\n", bug_report_url);
6545 /* We do not exit here. Instead we have created a fake input file
6546 called 'help-dummy' which needs to be compiled, and we pass this
6547 on the various sub-processes, along with the --help switch.
6548 Ensure their output appears after ours. */
6549 fputc ('\n', stdout);
6555 printf (_("%s %s%s\n"), progname, pkgversion_string,
6557 printf ("Copyright %s 2010 Free Software Foundation, Inc.\n",
6559 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
6560 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
6565 /* We do not exit here. We use the same mechanism of --help to print
6566 the version of the sub-processes. */
6567 fputc ('\n', stdout);
6576 fnotice (stderr, "Target: %s\n", spec_machine);
6577 fnotice (stderr, "Configured with: %s\n", configuration_arguments);
6579 #ifdef THREAD_MODEL_SPEC
6580 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6581 but there's no point in doing all this processing just to get
6582 thread_model back. */
6583 obstack_init (&obstack);
6584 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6585 obstack_1grow (&obstack, '\0');
6586 thrmod = XOBFINISH (&obstack, const char *);
6588 thrmod = thread_model;
6591 fnotice (stderr, "Thread model: %s\n", thrmod);
6593 /* compiler_version is truncated at the first space when initialized
6594 from version string, so truncate version_string at the first space
6595 before comparing. */
6596 for (n = 0; version_string[n]; n++)
6597 if (version_string[n] == ' ')
6600 if (! strncmp (version_string, compiler_version, n)
6601 && compiler_version[n] == 0)
6602 fnotice (stderr, "gcc version %s %s\n", version_string,
6605 fnotice (stderr, "gcc driver version %s %sexecuting gcc version %s\n",
6606 version_string, pkgversion_string, compiler_version);
6612 if (n_infiles == added_libraries)
6613 fatal_error ("no input files");
6615 /* Make a place to record the compiler output file names
6616 that correspond to the input files. */
6619 i += lang_specific_extra_outfiles;
6620 outfiles = XCNEWVEC (const char *, i);
6622 /* Record which files were specified explicitly as link input. */
6624 explicit_link_files = XCNEWVEC (char, n_infiles);
6626 combine_inputs = have_o || flag_wpa;
6628 for (i = 0; (int) i < n_infiles; i++)
6630 const char *name = infiles[i].name;
6631 struct compiler *compiler = lookup_compiler (name,
6633 infiles[i].language);
6635 if (compiler && !(compiler->combinable))
6636 combine_inputs = false;
6638 if (lang_n_infiles > 0 && compiler != input_file_compiler
6639 && infiles[i].language && infiles[i].language[0] != '*')
6640 infiles[i].incompiler = compiler;
6644 input_file_compiler = compiler;
6645 infiles[i].incompiler = compiler;
6649 /* Since there is no compiler for this input file, assume it is a
6651 explicit_link_files[i] = 1;
6652 infiles[i].incompiler = NULL;
6654 infiles[i].compiled = false;
6655 infiles[i].preprocessed = false;
6658 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1)
6659 fatal_error ("cannot specify -o with -c, -S or -E with multiple files");
6661 for (i = 0; (int) i < n_infiles; i++)
6663 int this_file_error = 0;
6665 /* Tell do_spec what to substitute for %i. */
6667 input_file_number = i;
6668 set_input (infiles[i].name);
6670 if (infiles[i].compiled)
6673 /* Use the same thing in %o, unless cp->spec says otherwise. */
6675 outfiles[i] = gcc_input_filename;
6677 /* Figure out which compiler from the file's suffix. */
6680 = lookup_compiler (infiles[i].name, input_filename_length,
6681 infiles[i].language);
6683 if (input_file_compiler)
6685 /* Ok, we found an applicable compiler. Run its spec. */
6687 if (input_file_compiler->spec[0] == '#')
6689 error ("%s: %s compiler not installed on this system",
6690 gcc_input_filename, &input_file_compiler->spec[1]);
6691 this_file_error = 1;
6697 if (debug_check_temp_file[0])
6698 free (debug_check_temp_file[0]);
6699 debug_check_temp_file[0] = NULL;
6701 if (debug_check_temp_file[1])
6702 free (debug_check_temp_file[1]);
6703 debug_check_temp_file[1] = NULL;
6706 value = do_spec (input_file_compiler->spec);
6707 infiles[i].compiled = true;
6709 this_file_error = 1;
6710 else if (compare_debug && debug_check_temp_file[0])
6713 inform (0, "recompiling with -fcompare-debug");
6715 compare_debug = -compare_debug;
6716 n_switches = n_switches_debug_check[1];
6717 n_switches_alloc = n_switches_alloc_debug_check[1];
6718 switches = switches_debug_check[1];
6720 value = do_spec (input_file_compiler->spec);
6722 compare_debug = -compare_debug;
6723 n_switches = n_switches_debug_check[0];
6724 n_switches_alloc = n_switches_alloc_debug_check[0];
6725 switches = switches_debug_check[0];
6729 error ("during -fcompare-debug recompilation");
6730 this_file_error = 1;
6733 gcc_assert (debug_check_temp_file[1]
6734 && strcmp (debug_check_temp_file[0],
6735 debug_check_temp_file[1]));
6738 inform (0, "comparing final insns dumps");
6740 if (compare_files (debug_check_temp_file))
6741 this_file_error = 1;
6746 if (debug_check_temp_file[0])
6747 free (debug_check_temp_file[0]);
6748 debug_check_temp_file[0] = NULL;
6750 if (debug_check_temp_file[1])
6751 free (debug_check_temp_file[1]);
6752 debug_check_temp_file[1] = NULL;
6757 /* If this file's name does not contain a recognized suffix,
6758 record it as explicit linker input. */
6761 explicit_link_files[i] = 1;
6763 /* Clear the delete-on-failure queue, deleting the files in it
6764 if this compilation failed. */
6766 if (this_file_error)
6768 delete_failure_queue ();
6771 /* If this compilation succeeded, don't delete those files later. */
6772 clear_failure_queue ();
6775 /* Reset the input file name to the first compile/object file name, for use
6776 with %b in LINK_SPEC. We use the first input file that we can find
6777 a compiler to compile it instead of using infiles.language since for
6778 languages other than C we use aliases that we then lookup later. */
6783 for (i = 0; i < n_infiles ; i++)
6784 if (infiles[i].language && infiles[i].language[0] != '*')
6786 set_input (infiles[i].name);
6793 /* Make sure INPUT_FILE_NUMBER points to first available open
6795 input_file_number = n_infiles;
6796 if (lang_specific_pre_link ())
6800 /* Determine if there are any linker input files. */
6801 num_linker_inputs = 0;
6802 for (i = 0; (int) i < n_infiles; i++)
6803 if (explicit_link_files[i] || outfiles[i] != NULL)
6804 num_linker_inputs++;
6806 /* Run ld to link all the compiler output files. */
6808 if (num_linker_inputs > 0 && !seen_error () && print_subprocess_help < 2)
6810 int tmp = execution_count;
6811 const char *fuse_linker_plugin = "fuse-linker-plugin";
6813 /* We'll use ld if we can't find collect2. */
6814 if (! strcmp (linker_name_spec, "collect2"))
6816 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false);
6818 linker_name_spec = "ld";
6821 if (switch_matches (fuse_linker_plugin,
6822 fuse_linker_plugin + strlen (fuse_linker_plugin), 0))
6824 linker_plugin_file_spec = find_a_file (&exec_prefixes,
6825 LTOPLUGINSONAME, R_OK,
6827 if (!linker_plugin_file_spec)
6828 fatal_error ("-fuse-linker-plugin, but " LTOPLUGINSONAME " not found");
6830 lto_libgcc_spec = find_a_file (&startfile_prefixes, "libgcc.a",
6832 if (!lto_libgcc_spec)
6833 fatal_error ("could not find libgcc.a");
6835 lto_gcc_spec = argv[0];
6837 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6839 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false);
6840 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true);
6842 if (print_subprocess_help == 1)
6844 printf (_("\nLinker options\n==============\n\n"));
6845 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
6846 " to the linker.\n\n"));
6849 value = do_spec (link_command_spec);
6852 linker_was_run = (tmp != execution_count);
6855 /* If options said don't run linker,
6856 complain about input files to be given to the linker. */
6858 if (! linker_was_run && !seen_error ())
6859 for (i = 0; (int) i < n_infiles; i++)
6860 if (explicit_link_files[i]
6861 && !(infiles[i].language && infiles[i].language[0] == '*'))
6862 warning (0, "%s: linker input file unused because linking not done",
6865 /* Delete some or all of the temporary files we made. */
6868 delete_failure_queue ();
6869 delete_temp_files ();
6871 if (print_help_list)
6873 printf (("\nFor bug reporting instructions, please see:\n"));
6874 printf ("%s\n", bug_report_url);
6877 return (signal_count != 0 ? 2
6878 : seen_error () ? (pass_exit_codes ? greatest_status : 1)
6882 /* Find the proper compilation spec for the file name NAME,
6883 whose length is LENGTH. LANGUAGE is the specified language,
6884 or 0 if this file is to be passed to the linker. */
6886 static struct compiler *
6887 lookup_compiler (const char *name, size_t length, const char *language)
6889 struct compiler *cp;
6891 /* If this was specified by the user to be a linker input, indicate that. */
6892 if (language != 0 && language[0] == '*')
6895 /* Otherwise, look for the language, if one is spec'd. */
6898 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6899 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6902 error ("language %s not recognized", language);
6906 /* Look for a suffix. */
6907 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6909 if (/* The suffix `-' matches only the file name `-'. */
6910 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6911 || (strlen (cp->suffix) < length
6912 /* See if the suffix matches the end of NAME. */
6913 && !strcmp (cp->suffix,
6914 name + length - strlen (cp->suffix))
6919 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6920 /* Look again, but case-insensitively this time. */
6922 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6924 if (/* The suffix `-' matches only the file name `-'. */
6925 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6926 || (strlen (cp->suffix) < length
6927 /* See if the suffix matches the end of NAME. */
6928 && ((!strcmp (cp->suffix,
6929 name + length - strlen (cp->suffix))
6930 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6931 && !strcasecmp (cp->suffix,
6932 name + length - strlen (cp->suffix)))
6938 if (cp >= compilers)
6940 if (cp->spec[0] != '@')
6941 /* A non-alias entry: return it. */
6944 /* An alias entry maps a suffix to a language.
6945 Search for the language; pass 0 for NAME and LENGTH
6946 to avoid infinite recursion if language not found. */
6947 return lookup_compiler (NULL, 0, cp->spec + 1);
6953 save_string (const char *s, int len)
6955 char *result = XNEWVEC (char, len + 1);
6957 memcpy (result, s, len);
6963 pfatal_with_name (const char *name)
6965 perror_with_name (name);
6966 delete_temp_files ();
6971 perror_with_name (const char *name)
6973 error ("%s: %m", name);
6977 validate_switches_from_spec (const char *spec)
6979 const char *p = spec;
6982 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
6983 /* We have a switch spec. */
6984 p = validate_switches (p + 1);
6988 validate_all_switches (void)
6990 struct compiler *comp;
6991 struct spec_list *spec;
6993 for (comp = compilers; comp->spec; comp++)
6994 validate_switches_from_spec (comp->spec);
6996 /* Look through the linked list of specs read from the specs file. */
6997 for (spec = specs; spec; spec = spec->next)
6998 validate_switches_from_spec (*spec->ptr_spec);
7000 validate_switches_from_spec (link_command_spec);
7003 /* Look at the switch-name that comes after START
7004 and mark as valid all supplied switches that match it. */
7007 validate_switches (const char *start)
7009 const char *p = start;
7013 bool suffix = false;
7014 bool starred = false;
7016 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7025 if (*p == '.' || *p == ',')
7029 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
7030 || *p == ',' || *p == '.' || *p == '@')
7035 starred = true, p++;
7041 /* Mark all matching switches as valid. */
7042 for (i = 0; i < n_switches; i++)
7043 if (!strncmp (switches[i].part1, atom, len)
7044 && (starred || switches[i].part1[len] == 0))
7045 switches[i].validated = 1;
7049 if (*p && (p[-1] == '|' || p[-1] == '&'))
7052 if (*p && p[-1] == ':')
7054 while (*p && *p != ';' && *p != '}')
7059 if (*p == '{' || *p == '<')
7060 p = validate_switches (p+1);
7061 else if (p[0] == 'W' && p[1] == '{')
7062 p = validate_switches (p+2);
7069 if (*p && p[-1] == ';')
7083 static struct mdswitchstr *mdswitches;
7084 static int n_mdswitches;
7086 /* Check whether a particular argument was used. The first time we
7087 canonicalize the switches to keep only the ones we care about. */
7090 used_arg (const char *p, int len)
7095 const char *replace;
7100 static struct mswitchstr *mswitches;
7101 static int n_mswitches;
7106 struct mswitchstr *matches;
7110 /* Break multilib_matches into the component strings of string
7111 and replacement string. */
7112 for (q = multilib_matches; *q != '\0'; q++)
7117 = (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
7119 q = multilib_matches;
7128 fatal_error ("multilib spec %qs is invalid",
7133 matches[i].len = q - matches[i].str;
7135 matches[i].replace = ++q;
7136 while (*q != ';' && *q != '\0')
7139 goto invalid_matches;
7142 matches[i].rep_len = q - matches[i].replace;
7148 /* Now build a list of the replacement string for switches that we care
7149 about. Make sure we allocate at least one entry. This prevents
7150 xmalloc from calling fatal, and prevents us from re-executing this
7153 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1));
7154 for (i = 0; i < n_switches; i++)
7155 if ((switches[i].live_cond & SWITCH_IGNORE) == 0)
7157 int xlen = strlen (switches[i].part1);
7158 for (j = 0; j < cnt; j++)
7159 if (xlen == matches[j].len
7160 && ! strncmp (switches[i].part1, matches[j].str, xlen))
7162 mswitches[n_mswitches].str = matches[j].replace;
7163 mswitches[n_mswitches].len = matches[j].rep_len;
7164 mswitches[n_mswitches].replace = (char *) 0;
7165 mswitches[n_mswitches].rep_len = 0;
7171 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7172 on the command line nor any options mutually incompatible with
7174 for (i = 0; i < n_mdswitches; i++)
7178 for (q = multilib_options; *q != '\0'; q++)
7184 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
7185 || strchr (" /", q[mdswitches[i].len]) == NULL)
7187 while (*q != ' ' && *q != '/' && *q != '\0')
7194 if (*q != ' ' && *q != '\0')
7196 while (*r != ' ' && *r != '\0')
7199 while (*q != ' ' && *q != '/' && *q != '\0')
7202 if (used_arg (r, q - r))
7207 mswitches[n_mswitches].str = mdswitches[i].str;
7208 mswitches[n_mswitches].len = mdswitches[i].len;
7209 mswitches[n_mswitches].replace = (char *) 0;
7210 mswitches[n_mswitches].rep_len = 0;
7223 for (i = 0; i < n_mswitches; i++)
7224 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
7231 default_arg (const char *p, int len)
7235 for (i = 0; i < n_mdswitches; i++)
7236 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
7242 /* Work out the subdirectory to use based on the options. The format of
7243 multilib_select is a list of elements. Each element is a subdirectory
7244 name followed by a list of options followed by a semicolon. The format
7245 of multilib_exclusions is the same, but without the preceding
7246 directory. First gcc will check the exclusions, if none of the options
7247 beginning with an exclamation point are present, and all of the other
7248 options are present, then we will ignore this completely. Passing
7249 that, gcc will consider each multilib_select in turn using the same
7250 rules for matching the options. If a match is found, that subdirectory
7254 set_multilib_dir (void)
7257 unsigned int this_path_len;
7258 const char *this_path, *this_arg;
7259 const char *start, *end;
7261 int ok, ndfltok, first;
7264 start = multilib_defaults;
7265 while (*start == ' ' || *start == '\t')
7267 while (*start != '\0')
7270 while (*start != ' ' && *start != '\t' && *start != '\0')
7272 while (*start == ' ' || *start == '\t')
7280 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches);
7281 for (start = multilib_defaults; *start != '\0'; start = end + 1)
7283 while (*start == ' ' || *start == '\t')
7289 for (end = start + 1;
7290 *end != ' ' && *end != '\t' && *end != '\0'; end++)
7293 obstack_grow (&multilib_obstack, start, end - start);
7294 obstack_1grow (&multilib_obstack, 0);
7295 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *);
7296 mdswitches[i++].len = end - start;
7303 p = multilib_exclusions;
7306 /* Ignore newlines. */
7313 /* Check the arguments. */
7320 fatal_error ("multilib exclusions %qs is invalid",
7321 multilib_exclusions);
7331 while (*p != ' ' && *p != ';')
7334 goto invalid_exclusions;
7338 if (*this_arg != '!')
7346 ok = used_arg (this_arg, p - this_arg);
7361 p = multilib_select;
7364 /* Ignore newlines. */
7371 /* Get the initial path. */
7378 fatal_error ("multilib select %qs is invalid",
7383 this_path_len = p - this_path;
7385 /* Check the arguments. */
7392 goto invalid_select;
7401 while (*p != ' ' && *p != ';')
7404 goto invalid_select;
7408 if (*this_arg != '!')
7416 /* If this is a default argument, we can just ignore it.
7417 This is true even if this_arg begins with '!'. Beginning
7418 with '!' does not mean that this argument is necessarily
7419 inappropriate for this library: it merely means that
7420 there is a more specific library which uses this
7421 argument. If this argument is a default, we need not
7422 consider that more specific library. */
7423 ok = used_arg (this_arg, p - this_arg);
7430 if (default_arg (this_arg, p - this_arg))
7439 if (this_path_len != 1
7440 || this_path[0] != '.')
7442 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1);
7445 strncpy (new_multilib_dir, this_path, this_path_len);
7446 new_multilib_dir[this_path_len] = '\0';
7447 q = strchr (new_multilib_dir, ':');
7450 multilib_dir = new_multilib_dir;
7457 const char *q = this_path, *end = this_path + this_path_len;
7459 while (q < end && *q != ':')
7463 char *new_multilib_os_dir = XNEWVEC (char, end - q);
7464 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
7465 new_multilib_os_dir[end - q - 1] = '\0';
7466 multilib_os_dir = new_multilib_os_dir;
7474 if (multilib_dir == NULL && multilib_os_dir != NULL
7475 && strcmp (multilib_os_dir, ".") == 0)
7477 free (CONST_CAST (char *, multilib_os_dir));
7478 multilib_os_dir = NULL;
7480 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7481 multilib_os_dir = multilib_dir;
7484 /* Print out the multiple library subdirectory selection
7485 information. This prints out a series of lines. Each line looks
7486 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7487 required. Only the desired options are printed out, the negative
7488 matches. The options are print without a leading dash. There are
7489 no spaces to make it easy to use the information in the shell.
7490 Each subdirectory is printed only once. This assumes the ordering
7491 generated by the genmultilib script. Also, we leave out ones that match
7495 print_multilib_info (void)
7497 const char *p = multilib_select;
7498 const char *last_path = 0, *this_path;
7500 unsigned int last_path_len = 0;
7505 /* Ignore newlines. */
7512 /* Get the initial path. */
7519 fatal_error ("multilib select %qs is invalid", multilib_select);
7525 /* When --disable-multilib was used but target defines
7526 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7527 to find multilib_os_dir, so skip them from output. */
7528 if (this_path[0] == '.' && this_path[1] == ':')
7531 /* Check for matches with the multilib_exclusions. We don't bother
7532 with the '!' in either list. If any of the exclusion rules match
7533 all of its options with the select rule, we skip it. */
7535 const char *e = multilib_exclusions;
7536 const char *this_arg;
7541 /* Ignore newlines. */
7548 /* Check the arguments. */
7557 fatal_error ("multilib exclusion %qs is invalid",
7558 multilib_exclusions);
7569 while (*e != ' ' && *e != ';')
7572 goto invalid_exclusion;
7580 int len = e - this_arg;
7583 goto invalid_select;
7587 while (*q != ' ' && *q != ';')
7590 goto invalid_select;
7594 if (! strncmp (arg, this_arg,
7595 (len < q - arg) ? q - arg : len)
7596 || default_arg (this_arg, e - this_arg))
7626 /* If this is a duplicate, skip it. */
7627 skip = (last_path != 0
7628 && (unsigned int) (p - this_path) == last_path_len
7629 && ! strncmp (last_path, this_path, last_path_len));
7631 last_path = this_path;
7632 last_path_len = p - this_path;
7635 /* If this directory requires any default arguments, we can skip
7636 it. We will already have printed a directory identical to
7637 this one which does not require that default argument. */
7648 goto invalid_select;
7655 while (*q != ' ' && *q != ';')
7658 goto invalid_select;
7663 && default_arg (arg, q - arg))
7678 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7689 goto invalid_select;
7697 use_arg = *p != '!';
7702 while (*p != ' ' && *p != ';')
7705 goto invalid_select;
7717 /* If there are extra options, print them now. */
7718 if (multilib_extra && *multilib_extra)
7720 int print_at = TRUE;
7723 for (q = multilib_extra; *q != '\0'; q++)
7744 /* getenv built-in spec function.
7746 Returns the value of the environment variable given by its first
7747 argument, concatenated with the second argument. If the
7748 environment variable is not defined, a fatal error is issued. */
7751 getenv_spec_function (int argc, const char **argv)
7761 value = getenv (argv[0]);
7763 fatal_error ("environment variable %qs not defined", argv[0]);
7765 /* We have to escape every character of the environment variable so
7766 they are not interpreted as active spec characters. A
7767 particularly painful case is when we are reading a variable
7768 holding a windows path complete with \ separators. */
7769 len = strlen (value) * 2 + strlen (argv[1]) + 1;
7770 result = XNEWVAR (char, len);
7771 for (ptr = result; *value; ptr += 2)
7777 strcpy (ptr, argv[1]);
7782 /* if-exists built-in spec function.
7784 Checks to see if the file specified by the absolute pathname in
7785 ARGS exists. Returns that pathname if found.
7787 The usual use for this function is to check for a library file
7788 (whose name has been expanded with %s). */
7791 if_exists_spec_function (int argc, const char **argv)
7793 /* Must have only one argument. */
7794 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7800 /* if-exists-else built-in spec function.
7802 This is like if-exists, but takes an additional argument which
7803 is returned if the first argument does not exist. */
7806 if_exists_else_spec_function (int argc, const char **argv)
7808 /* Must have exactly two arguments. */
7812 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7818 /* replace-outfile built-in spec function.
7820 This looks for the first argument in the outfiles array's name and
7821 replaces it with the second argument. */
7824 replace_outfile_spec_function (int argc, const char **argv)
7827 /* Must have exactly two arguments. */
7831 for (i = 0; i < n_infiles; i++)
7833 if (outfiles[i] && !strcmp (outfiles[i], argv[0]))
7834 outfiles[i] = xstrdup (argv[1]);
7839 /* remove-outfile built-in spec function.
7841 * This looks for the first argument in the outfiles array's name and
7845 remove_outfile_spec_function (int argc, const char **argv)
7848 /* Must have exactly one argument. */
7852 for (i = 0; i < n_infiles; i++)
7854 if (outfiles[i] && !strcmp (outfiles[i], argv[0]))
7860 /* Given two version numbers, compares the two numbers.
7861 A version number must match the regular expression
7862 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
7865 compare_version_strings (const char *v1, const char *v2)
7870 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
7871 REG_EXTENDED | REG_NOSUB) != 0)
7873 rresult = regexec (&r, v1, 0, NULL, 0);
7874 if (rresult == REG_NOMATCH)
7875 fatal_error ("invalid version number %qs", v1);
7876 else if (rresult != 0)
7878 rresult = regexec (&r, v2, 0, NULL, 0);
7879 if (rresult == REG_NOMATCH)
7880 fatal_error ("invalid version number %qs", v2);
7881 else if (rresult != 0)
7884 return strverscmp (v1, v2);
7888 /* version_compare built-in spec function.
7890 This takes an argument of the following form:
7892 <comparison-op> <arg1> [<arg2>] <switch> <result>
7894 and produces "result" if the comparison evaluates to true,
7895 and nothing if it doesn't.
7897 The supported <comparison-op> values are:
7899 >= true if switch is a later (or same) version than arg1
7901 < true if switch is an earlier version than arg1
7903 >< true if switch is arg1 or later, and earlier than arg2
7904 <> true if switch is earlier than arg1 or is arg2 or later
7906 If the switch is not present, the condition is false unless
7907 the first character of the <comparison-op> is '!'.
7910 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
7911 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
7914 version_compare_spec_function (int argc, const char **argv)
7918 const char *switch_value = NULL;
7923 fatal_error ("too few arguments to %%:version-compare");
7924 if (argv[0][0] == '\0')
7926 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!')
7928 if (argc != nargs + 3)
7929 fatal_error ("too many arguments to %%:version-compare");
7931 switch_len = strlen (argv[nargs + 1]);
7932 for (i = 0; i < n_switches; i++)
7933 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len)
7934 && check_live_switch (i, switch_len))
7935 switch_value = switches[i].part1 + switch_len;
7937 if (switch_value == NULL)
7941 comp1 = compare_version_strings (switch_value, argv[1]);
7943 comp2 = compare_version_strings (switch_value, argv[2]);
7945 comp2 = -1; /* This value unused. */
7948 switch (argv[0][0] << 8 | argv[0][1])
7950 case '>' << 8 | '=':
7951 result = comp1 >= 0;
7953 case '!' << 8 | '<':
7954 result = comp1 >= 0 || switch_value == NULL;
7959 case '!' << 8 | '>':
7960 result = comp1 < 0 || switch_value == NULL;
7962 case '>' << 8 | '<':
7963 result = comp1 >= 0 && comp2 < 0;
7965 case '<' << 8 | '>':
7966 result = comp1 < 0 || comp2 >= 0;
7970 fatal_error ("unknown operator %qs in %%:version-compare", argv[0]);
7975 return argv[nargs + 2];
7978 /* %:include builtin spec function. This differs from %include in that it
7979 can be nested inside a spec, and thus be conditionalized. It takes
7980 one argument, the filename, and looks for it in the startfile path.
7981 The result is always NULL, i.e. an empty expansion. */
7984 include_spec_function (int argc, const char **argv)
7991 file = find_a_file (&startfile_prefixes, argv[0], R_OK, true);
7992 read_specs (file ? file : argv[0], FALSE);
7997 /* %:find-file spec function. This function replaces its argument by
7998 the file found thru find_file, that is the -print-file-name gcc
8001 find_file_spec_function (int argc, const char **argv)
8008 file = find_file (argv[0]);
8013 /* %:find-plugindir spec function. This function replaces its argument
8014 by the -iplugindir=<dir> option. `dir' is found thru find_file, that
8015 is the -print-file-name gcc program option. */
8017 find_plugindir_spec_function (int argc, const char **argv ATTRIBUTE_UNUSED)
8024 option = concat ("-iplugindir=", find_file ("plugin"), NULL);
8029 /* %:print-asm-header spec function. Print a banner to say that the
8030 following output is from the assembler. */
8033 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED,
8034 const char **argv ATTRIBUTE_UNUSED)
8036 printf (_("Assembler options\n=================\n\n"));
8037 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
8042 /* Compute a timestamp to initialize flag_random_seed. */
8045 get_local_tick (void)
8049 /* Get some more or less random data. */
8050 #ifdef HAVE_GETTIMEOFDAY
8054 gettimeofday (&tv, NULL);
8055 ret = tv.tv_sec * 1000 + tv.tv_usec / 1000;
8059 time_t now = time (NULL);
8061 if (now != (time_t)-1)
8062 ret = (unsigned) now;
8069 /* %:compare-debug-dump-opt spec function. Save the last argument,
8070 expected to be the last -fdump-final-insns option, or generate a
8074 compare_debug_dump_opt_spec_function (int arg,
8075 const char **argv ATTRIBUTE_UNUSED)
8080 static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3];
8083 fatal_error ("too many arguments to %%:compare-debug-dump-opt");
8085 do_spec_2 ("%{fdump-final-insns=*:%*}");
8086 do_spec_1 (" ", 0, NULL);
8088 if (argbuf_index > 0 && strcmp (argv[argbuf_index - 1], "."))
8093 name = xstrdup (argv[argbuf_index - 1]);
8098 const char *ext = NULL;
8100 if (argbuf_index > 0)
8102 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
8105 else if (!compare_debug)
8108 do_spec_2 ("%g.gkd");
8110 do_spec_1 (" ", 0, NULL);
8112 gcc_assert (argbuf_index > 0);
8114 name = concat (argbuf[argbuf_index - 1], ext, NULL);
8116 ret = concat ("-fdump-final-insns=", name, NULL);
8119 which = compare_debug < 0;
8120 debug_check_temp_file[which] = name;
8124 unsigned HOST_WIDE_INT value = get_local_tick () ^ getpid ();
8126 sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value);
8130 ret = concat ("%{!frandom-seed=*:-frandom-seed=", random_seed, "} ",
8139 static const char *debug_auxbase_opt;
8141 /* %:compare-debug-self-opt spec function. Expands to the options
8142 that are to be passed in the second compilation of
8146 compare_debug_self_opt_spec_function (int arg,
8147 const char **argv ATTRIBUTE_UNUSED)
8150 fatal_error ("too many arguments to %%:compare-debug-self-opt");
8152 if (compare_debug >= 0)
8155 do_spec_2 ("%{c|S:%{o*:%*}}");
8156 do_spec_1 (" ", 0, NULL);
8158 if (argbuf_index > 0)
8159 debug_auxbase_opt = concat ("-auxbase-strip ",
8160 argbuf[argbuf_index - 1],
8163 debug_auxbase_opt = NULL;
8166 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
8167 %<fdump-final-insns=* -w -S -o %j \
8168 %{!fcompare-debug-second:-fcompare-debug-second} \
8169 ", compare_debug_opt, NULL);
8172 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
8173 options that are to be passed in the second compilation of
8174 compare-debug. It expects, as an argument, the basename of the
8175 current input file name, with the .gk suffix appended to it. */
8178 compare_debug_auxbase_opt_spec_function (int arg,
8185 fatal_error ("too few arguments to %%:compare-debug-auxbase-opt");
8188 fatal_error ("too many arguments to %%:compare-debug-auxbase-opt");
8190 if (compare_debug >= 0)
8193 len = strlen (argv[0]);
8194 if (len < 3 || strcmp (argv[0] + len - 3, ".gk") != 0)
8195 fatal_error ("argument to %%:compare-debug-auxbase-opt "
8196 "does not end in .gk");
8198 if (debug_auxbase_opt)
8199 return debug_auxbase_opt;
8201 #define OPT "-auxbase "
8204 name = (char*) xmalloc (sizeof (OPT) + len);
8205 memcpy (name, OPT, sizeof (OPT) - 1);
8206 memcpy (name + sizeof (OPT) - 1, argv[0], len);
8207 name[sizeof (OPT) - 1 + len] = '\0';