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"
53 # include <sys/mman.h>
55 /* This is on Solaris. */
56 # include <sys/types.h>
61 # define MAP_FAILED ((void *)-1)
64 /* By default there is no special suffix for target executables. */
65 /* FIXME: when autoconf is fixed, remove the host check - dj */
66 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
67 #define HAVE_TARGET_EXECUTABLE_SUFFIX
70 /* By default there is no special suffix for host executables. */
71 #ifdef HOST_EXECUTABLE_SUFFIX
72 #define HAVE_HOST_EXECUTABLE_SUFFIX
74 #define HOST_EXECUTABLE_SUFFIX ""
77 /* By default, the suffix for target object files is ".o". */
78 #ifdef TARGET_OBJECT_SUFFIX
79 #define HAVE_TARGET_OBJECT_SUFFIX
81 #define TARGET_OBJECT_SUFFIX ".o"
84 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
86 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
87 #ifndef LIBRARY_PATH_ENV
88 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
92 #define kill(p,s) raise(s)
95 /* If a stage of compilation returns an exit status >= 1,
96 compilation of that file ceases. */
98 #define MIN_FATAL_STATUS 1
100 /* Flag set by cppspec.c to 1. */
103 /* Flag set to nonzero if an @file argument has been supplied to gcc. */
104 static bool at_file_supplied;
106 /* Definition of string containing the arguments given to configure. */
107 #include "configargs.h"
109 /* Flag saying to print the command line options understood by gcc and its
112 static int print_help_list;
114 /* Flag saying to print the version of gcc and its sub-processes. */
116 static int print_version;
118 /* Flag indicating whether we should ONLY print the command and
119 arguments (like verbose_flag) without executing the command.
120 Displayed arguments are quoted so that the generated command
121 line is suitable for execution. This is intended for use in
122 shell scripts to capture the driver-generated command line. */
123 static int verbose_only_flag;
125 /* Flag indicating how to print command line options of sub-processes. */
127 static int print_subprocess_help;
129 /* Whether we should report subprocess execution times to a file. */
131 FILE *report_times_to_file = NULL;
133 /* Nonzero means place this string before uses of /, so that include
134 and library files can be found in an alternate location. */
136 #ifdef TARGET_SYSTEM_ROOT
137 static const char *target_system_root = TARGET_SYSTEM_ROOT;
139 static const char *target_system_root = 0;
142 /* Nonzero means pass the updated target_system_root to the compiler. */
144 static int target_system_root_changed;
146 /* Nonzero means append this string to target_system_root. */
148 static const char *target_sysroot_suffix = 0;
150 /* Nonzero means append this string to target_system_root for headers. */
152 static const char *target_sysroot_hdrs_suffix = 0;
154 /* Nonzero means write "temp" files in source directory
155 and use the source file's name in them, and don't delete them. */
157 static enum save_temps {
158 SAVE_TEMPS_NONE, /* no -save-temps */
159 SAVE_TEMPS_CWD, /* -save-temps in current directory */
160 SAVE_TEMPS_OBJ /* -save-temps in object directory */
163 /* Output file to use to get the object directory for -save-temps=obj */
164 static char *save_temps_prefix = 0;
165 static size_t save_temps_length = 0;
167 /* The compiler version. */
169 static const char *compiler_version;
171 /* The target version. */
173 static const char *const spec_version = DEFAULT_TARGET_VERSION;
175 /* The target machine. */
177 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
179 /* Nonzero if cross-compiling.
180 When -b is used, the value comes from the `specs' file. */
182 #ifdef CROSS_DIRECTORY_STRUCTURE
183 static const char *cross_compile = "1";
185 static const char *cross_compile = "0";
188 /* Greatest exit code of sub-processes that has been encountered up to
190 static int greatest_status = 1;
192 /* This is the obstack which we use to allocate many strings. */
194 static struct obstack obstack;
196 /* This is the obstack to build an environment variable to pass to
197 collect2 that describes all of the relevant switches of what to
198 pass the compiler in building the list of pointers to constructors
201 static struct obstack collect_obstack;
203 /* Forward declaration for prototypes. */
207 static void init_spec (void);
208 static void store_arg (const char *, int, int);
209 static void insert_wrapper (const char *);
210 static char *load_specs (const char *);
211 static void read_specs (const char *, int);
212 static void set_spec (const char *, const char *);
213 static struct compiler *lookup_compiler (const char *, size_t, const char *);
214 static char *build_search_list (const struct path_prefix *, const char *,
216 static void xputenv (const char *);
217 static void putenv_from_prefixes (const struct path_prefix *, const char *,
219 static int access_check (const char *, int);
220 static char *find_a_file (const struct path_prefix *, const char *, int, bool);
221 static void add_prefix (struct path_prefix *, const char *, const char *,
223 static void add_sysrooted_prefix (struct path_prefix *, const char *,
224 const char *, int, int, int);
225 static char *skip_whitespace (char *);
226 static void delete_if_ordinary (const char *);
227 static void delete_temp_files (void);
228 static void delete_failure_queue (void);
229 static void clear_failure_queue (void);
230 static int check_live_switch (int, int);
231 static const char *handle_braces (const char *);
232 static inline bool input_suffix_matches (const char *, const char *);
233 static inline bool switch_matches (const char *, const char *, int);
234 static inline void mark_matching_switches (const char *, const char *, int);
235 static inline void process_marked_switches (void);
236 static const char *process_brace_body (const char *, const char *, const char *, int, int);
237 static const struct spec_function *lookup_spec_function (const char *);
238 static const char *eval_spec_function (const char *, const char *);
239 static const char *handle_spec_function (const char *);
240 static char *save_string (const char *, int);
241 static void set_collect_gcc_options (void);
242 static int do_spec_1 (const char *, int, const char *);
243 static int do_spec_2 (const char *);
244 static void do_option_spec (const char *, const char *);
245 static void do_self_spec (const char *);
246 static const char *find_file (const char *);
247 static int is_directory (const char *, bool);
248 static const char *validate_switches (const char *);
249 static void validate_all_switches (void);
250 static inline void validate_switches_from_spec (const char *);
251 static void give_switch (int, int);
252 static int used_arg (const char *, int);
253 static int default_arg (const char *, int);
254 static void set_multilib_dir (void);
255 static void print_multilib_info (void);
256 static void perror_with_name (const char *);
257 static void display_help (void);
258 static void add_preprocessor_option (const char *, int);
259 static void add_assembler_option (const char *, int);
260 static void add_linker_option (const char *, int);
261 static void process_command (unsigned int, struct cl_decoded_option *);
262 static int execute (void);
263 static void alloc_args (void);
264 static void clear_args (void);
265 static void fatal_signal (int);
266 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
267 static void init_gcc_specs (struct obstack *, const char *, const char *,
270 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
271 static const char *convert_filename (const char *, int, int);
274 static const char *getenv_spec_function (int, const char **);
275 static const char *if_exists_spec_function (int, const char **);
276 static const char *if_exists_else_spec_function (int, const char **);
277 static const char *replace_outfile_spec_function (int, const char **);
278 static const char *remove_outfile_spec_function (int, const char **);
279 static const char *version_compare_spec_function (int, const char **);
280 static const char *include_spec_function (int, const char **);
281 static const char *find_file_spec_function (int, const char **);
282 static const char *find_plugindir_spec_function (int, const char **);
283 static const char *print_asm_header_spec_function (int, const char **);
284 static const char *compare_debug_dump_opt_spec_function (int, const char **);
285 static const char *compare_debug_self_opt_spec_function (int, const char **);
286 static const char *compare_debug_auxbase_opt_spec_function (int, const char **);
288 /* The Specs Language
290 Specs are strings containing lines, each of which (if not blank)
291 is made up of a program name, and arguments separated by spaces.
292 The program name must be exact and start from root, since no path
293 is searched and it is unreliable to depend on the current working directory.
294 Redirection of input or output is not supported; the subprograms must
295 accept filenames saying what files to read and write.
297 In addition, the specs can contain %-sequences to substitute variable text
298 or for conditional text. Here is a table of all defined %-sequences.
299 Note that spaces are not generated automatically around the results of
300 expanding these sequences; therefore, you can concatenate them together
301 or with constant text in a single argument.
303 %% substitute one % into the program name or argument.
304 %i substitute the name of the input file being processed.
305 %b substitute the basename of the input file being processed.
306 This is the substring up to (and not including) the last period
307 and not including the directory unless -save-temps was specified
308 to put temporaries in a different location.
309 %B same as %b, but include the file suffix (text after the last period).
311 substitute a file name that has suffix SUFFIX and is chosen
312 once per compilation, and mark the argument a la %d. To reduce
313 exposure to denial-of-service attacks, the file name is now
314 chosen in a way that is hard to predict even when previously
315 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
316 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
317 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
318 had been pre-processed. Previously, %g was simply substituted
319 with a file name chosen once per compilation, without regard
320 to any appended suffix (which was therefore treated just like
321 ordinary text), making such attacks more likely to succeed.
323 like %g, but if -pipe is in effect, expands simply to "-".
325 like %g, but if -pipe is in effect, expands to nothing. (We have both
326 %| and %m to accommodate differences between system assemblers; see
327 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
329 like %g, but generates a new temporary file name even if %uSUFFIX
332 substitutes the last file name generated with %uSUFFIX, generating a
333 new one if there is no such last file name. In the absence of any
334 %uSUFFIX, this is just like %gSUFFIX, except they don't share
335 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
336 would involve the generation of two distinct file names, one
337 for each `%g.s' and another for each `%U.s'. Previously, %U was
338 simply substituted with a file name chosen for the previous %u,
339 without regard to any appended suffix.
341 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
342 writable, and if save-temps is off; otherwise, substitute the name
343 of a temporary file, just like %u. This temporary file is not
344 meant for communication between processes, but rather as a junk
347 substitutes .SUFFIX for the suffixes of a matched switch's args when
348 it is subsequently output with %*. SUFFIX is terminated by the next
350 %d marks the argument containing or following the %d as a
351 temporary file name, so that that file will be deleted if GCC exits
352 successfully. Unlike %g, this contributes no text to the argument.
353 %w marks the argument containing or following the %w as the
354 "output file" of this compilation. This puts the argument
355 into the sequence of arguments that %o will substitute later.
356 %V indicates that this compilation produces no "output file".
358 like %{...} but mark last argument supplied within
359 as a file to be deleted on failure.
360 %o substitutes the names of all the output files, with spaces
361 automatically placed around them. You should write spaces
362 around the %o as well or the results are undefined.
363 %o is for use in the specs for running the linker.
364 Input files whose names have no recognized suffix are not compiled
365 at all, but they are included among the output files, so they will
367 %O substitutes the suffix for object files. Note that this is
368 handled specially when it immediately follows %g, %u, or %U
369 (with or without a suffix argument) because of the need for
370 those to form complete file names. The handling is such that
371 %O is treated exactly as if it had already been substituted,
372 except that %g, %u, and %U do not currently support additional
373 SUFFIX characters following %O as they would following, for
375 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
376 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
377 and -B options) and -imultilib as necessary.
378 %s current argument is the name of a library or startup file of some sort.
379 Search for that file in a standard list of directories
380 and substitute the full name found.
381 %eSTR Print STR as an error message. STR is terminated by a newline.
382 Use this when inconsistent options are detected.
383 %nSTR Print STR as a notice. STR is terminated by a newline.
384 %x{OPTION} Accumulate an option for %X.
385 %X Output the accumulated linker options specified by compilations.
386 %Y Output the accumulated assembler options specified by compilations.
387 %Z Output the accumulated preprocessor options specified by compilations.
388 %a process ASM_SPEC as a spec.
389 This allows config.h to specify part of the spec for running as.
390 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
391 used here. This can be used to run a post-processor after the
392 assembler has done its job.
393 %D Dump out a -L option for each directory in startfile_prefixes.
394 If multilib_dir is set, extra entries are generated with it affixed.
395 %l process LINK_SPEC as a spec.
396 %L process LIB_SPEC as a spec.
397 %G process LIBGCC_SPEC as a spec.
398 %R Output the concatenation of target_system_root and
399 target_sysroot_suffix.
400 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
401 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
402 %C process CPP_SPEC as a spec.
403 %1 process CC1_SPEC as a spec.
404 %2 process CC1PLUS_SPEC as a spec.
405 %* substitute the variable part of a matched option. (See below.)
406 Note that each comma in the substituted string is replaced by
408 %<S remove all occurrences of -S from the command line.
409 Note - this command is position dependent. % commands in the
410 spec string before this one will see -S, % commands in the
411 spec string after this one will not.
412 %<S* remove all occurrences of all switches beginning with -S from the
415 Call the named function FUNCTION, passing it ARGS. ARGS is
416 first processed as a nested spec string, then split into an
417 argument vector in the usual fashion. The function returns
418 a string which is processed as if it had appeared literally
419 as part of the current spec.
420 %{S} substitutes the -S switch, if that switch was given to GCC.
421 If that switch was not specified, this substitutes nothing.
422 Here S is a metasyntactic variable.
423 %{S*} substitutes all the switches specified to GCC whose names start
424 with -S. This is used for -o, -I, etc; switches that take
425 arguments. GCC considers `-o foo' as being one switch whose
426 name starts with `o'. %{o*} would substitute this text,
427 including the space; thus, two arguments would be generated.
428 %{S*&T*} likewise, but preserve order of S and T options (the order
429 of S and T in the spec is not significant). Can be any number
430 of ampersand-separated variables; for each the wild card is
431 optional. Useful for CPP as %{D*&U*&A*}.
433 %{S:X} substitutes X, if the -S switch was given to GCC.
434 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
435 %{S*:X} substitutes X if one or more switches whose names start
436 with -S was given to GCC. Normally X is substituted only
437 once, no matter how many such switches appeared. However,
438 if %* appears somewhere in X, then X will be substituted
439 once for each matching switch, with the %* replaced by the
440 part of that switch that matched the '*'.
441 %{.S:X} substitutes X, if processing a file with suffix S.
442 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
443 %{,S:X} substitutes X, if processing a file which will use spec S.
444 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
446 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
447 combined with '!', '.', ',', and '*' as above binding stronger
449 If %* appears in X, all of the alternatives must be starred, and
450 only the first matching alternative is substituted.
451 %{S:X; if S was given to GCC, substitutes X;
452 T:Y; else if T was given to GCC, substitutes Y;
453 :D} else substitutes D. There can be as many clauses as you need.
454 This may be combined with '.', '!', ',', '|', and '*' as above.
456 %(Spec) processes a specification defined in a specs file as *Spec:
457 %[Spec] as above, but put __ around -D arguments
459 The conditional text X in a %{S:X} or similar construct may contain
460 other nested % constructs or spaces, or even newlines. They are
461 processed as usual, as described above. Trailing white space in X is
462 ignored. White space may also appear anywhere on the left side of the
463 colon in these constructs, except between . or * and the corresponding
466 The -O, -f, -m, and -W switches are handled specifically in these
467 constructs. If another value of -O or the negated form of a -f, -m, or
468 -W switch is found later in the command line, the earlier switch
469 value is ignored, except with {S*} where S is just one letter; this
470 passes all matching options.
472 The character | at the beginning of the predicate text is used to indicate
473 that a command should be piped to the following command, but only if -pipe
476 Note that it is built into GCC which switches take arguments and which
477 do not. You might think it would be useful to generalize this to
478 allow each compiler's spec to say which switches take arguments. But
479 this cannot be done in a consistent fashion. GCC cannot even decide
480 which input files have been specified without knowing which switches
481 take arguments, and it must know which input files to compile in order
482 to tell which compilers to run.
484 GCC also knows implicitly that arguments starting in `-l' are to be
485 treated as compiler output files, and passed to the linker in their
486 proper position among the other output files. */
488 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
490 /* config.h can define ASM_SPEC to provide extra args to the assembler
491 or extra switch-translations. */
496 /* config.h can define ASM_FINAL_SPEC to run a post processor after
497 the assembler has run. */
498 #ifndef ASM_FINAL_SPEC
499 #define ASM_FINAL_SPEC ""
502 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
503 or extra switch-translations. */
508 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
509 or extra switch-translations. */
514 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
515 or extra switch-translations. */
517 #define CC1PLUS_SPEC ""
520 /* config.h can define LINK_SPEC to provide extra args to the linker
521 or extra switch-translations. */
526 /* config.h can define LIB_SPEC to override the default libraries. */
528 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
533 /* XXX: valid only for GNU ld */
534 /* XXX: should exactly match hooks provided by libmudflap.a */
535 #define MFWRAP_SPEC " %{static: %{fmudflap|fmudflapth: \
536 --wrap=malloc --wrap=free --wrap=calloc --wrap=realloc\
537 --wrap=mmap --wrap=munmap --wrap=alloca\
538 } %{fmudflapth: --wrap=pthread_create\
539 }} %{fmudflap|fmudflapth: --wrap=main}"
542 #define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}"
545 /* When using -fsplit-stack we need to wrap pthread_create, in order
546 to initialize the stack guard. We always use wrapping, rather than
547 shared library ordering, and we keep the wrapper function in
548 libgcc. This is not yet a real spec, though it could become one;
549 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping
550 only works with GNU ld and gold. FIXME: This is incompatible with
551 -fmudflap when linking statically, which wants to do its own
553 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}"
555 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
558 #if defined(REAL_LIBGCC_SPEC)
559 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
560 #elif defined(LINK_LIBGCC_SPECIAL_1)
561 /* Have gcc do the search for libgcc.a. */
562 #define LIBGCC_SPEC "libgcc.a%s"
564 #define LIBGCC_SPEC "-lgcc"
568 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
569 #ifndef STARTFILE_SPEC
570 #define STARTFILE_SPEC \
571 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
574 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
576 #define ENDFILE_SPEC ""
580 #define LINKER_NAME "collect2"
583 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
584 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
589 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
591 #ifndef ASM_DEBUG_SPEC
592 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
593 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
594 # define ASM_DEBUG_SPEC \
595 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
596 ? "%{!g0:%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}}" ASM_MAP \
597 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
599 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
600 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
602 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
603 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
607 #ifndef ASM_DEBUG_SPEC
608 # define ASM_DEBUG_SPEC ""
611 /* Here is the spec for running the linker, after compiling all files. */
613 /* This is overridable by the target in case they need to specify the
614 -lgcc and -lc order specially, yet not require them to override all
615 of LINK_COMMAND_SPEC. */
616 #ifndef LINK_GCC_C_SEQUENCE_SPEC
617 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
620 #ifndef LINK_SSP_SPEC
621 #ifdef TARGET_LIBC_PROVIDES_SSP
622 #define LINK_SSP_SPEC "%{fstack-protector:}"
624 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}"
628 #ifndef LINK_PIE_SPEC
630 #define LINK_PIE_SPEC "%{pie:-pie} "
632 #define LINK_PIE_SPEC "%{pie:} "
636 #ifndef LINK_BUILDID_SPEC
637 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
638 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
643 /* -u* was put back because both BSD and SysV seem to support it. */
644 /* %{static:} simply prevents an error message if the target machine
645 doesn't handle -static. */
646 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
647 scripts which exist in user specified directories, or in standard
649 /* We pass any -flto flags on to the linker, which is expected
650 to understand them. In practice, this means it had better be collect2. */
651 #ifndef LINK_COMMAND_SPEC
652 #define LINK_COMMAND_SPEC "\
653 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
655 %{fuse-linker-plugin: \
656 -plugin %(linker_plugin_file) \
657 -plugin-opt=%(lto_wrapper) \
658 -plugin-opt=-fresolution=%u.res \
659 %{static|static-libgcc:-plugin-opt=-pass-through=%(lto_libgcc)} \
660 %{static:-plugin-opt=-pass-through=-lc} \
662 %{flto*:%<fcompare-debug*} \
663 %{flto*} %l " LINK_PIE_SPEC \
664 "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\
665 %{s} %{t} %{u*} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
666 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
667 %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
668 %(mflib) " STACK_SPLIT_SPEC "\
669 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov}\
670 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
671 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
674 #ifndef LINK_LIBGCC_SPEC
675 /* Generate -L options for startfile prefix list. */
676 # define LINK_LIBGCC_SPEC "%D"
679 #ifndef STARTFILE_PREFIX_SPEC
680 # define STARTFILE_PREFIX_SPEC ""
684 # define SYSROOT_SPEC "--sysroot=%R"
687 #ifndef SYSROOT_SUFFIX_SPEC
688 # define SYSROOT_SUFFIX_SPEC ""
691 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
692 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
695 static const char *asm_debug;
696 static const char *cpp_spec = CPP_SPEC;
697 static const char *cc1_spec = CC1_SPEC;
698 static const char *cc1plus_spec = CC1PLUS_SPEC;
699 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
700 static const char *link_ssp_spec = LINK_SSP_SPEC;
701 static const char *asm_spec = ASM_SPEC;
702 static const char *asm_final_spec = ASM_FINAL_SPEC;
703 static const char *link_spec = LINK_SPEC;
704 static const char *lib_spec = LIB_SPEC;
705 static const char *mfwrap_spec = MFWRAP_SPEC;
706 static const char *mflib_spec = MFLIB_SPEC;
707 static const char *link_gomp_spec = "";
708 static const char *libgcc_spec = LIBGCC_SPEC;
709 static const char *endfile_spec = ENDFILE_SPEC;
710 static const char *startfile_spec = STARTFILE_SPEC;
711 static const char *linker_name_spec = LINKER_NAME;
712 static const char *linker_plugin_file_spec = "";
713 static const char *lto_wrapper_spec = "";
714 static const char *lto_gcc_spec = "";
715 static const char *lto_libgcc_spec = "";
716 static const char *link_command_spec = LINK_COMMAND_SPEC;
717 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
718 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
719 static const char *sysroot_spec = SYSROOT_SPEC;
720 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
721 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
723 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
724 There should be no need to override these in target dependent files,
725 but we need to copy them to the specs file so that newer versions
726 of the GCC driver can correctly drive older tool chains with the
727 appropriate -B options. */
729 /* When cpplib handles traditional preprocessing, get rid of this, and
730 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
731 that we default the front end language better. */
732 static const char *trad_capable_cpp =
733 "cc1 -E %{traditional|ftraditional|traditional-cpp:-traditional-cpp}";
735 /* We don't wrap .d files in %W{} since a missing .d file, and
736 therefore no dependency entry, confuses make into thinking a .o
737 file that happens to exist is up-to-date. */
738 static const char *cpp_unique_options =
739 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
740 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
741 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
742 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
743 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
744 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
745 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
746 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
747 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
748 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
751 /* This contains cpp options which are common with cc1_options and are passed
752 only when preprocessing only to avoid duplication. We pass the cc1 spec
753 options to the preprocessor so that it the cc1 spec may manipulate
754 options used to set target flags. Those special target flags settings may
755 in turn cause preprocessor symbols to be defined specially. */
756 static const char *cpp_options =
757 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
758 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
759 %{undef} %{save-temps*:-fpch-preprocess}";
761 /* This contains cpp options which are not passed when the preprocessor
762 output will be used by another program. */
763 static const char *cpp_debug_options = "%{d*}";
765 /* NB: This is shared amongst all front-ends, except for Ada. */
766 static const char *cc1_options =
767 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
768 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
769 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
770 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
771 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
772 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
773 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
774 %{Qn:-fno-ident} %{-help:--help}\
775 %{-target-help:--target-help}\
776 %{-version:--version}\
777 %{-help=*:--help=%*}\
778 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
779 %{fsyntax-only:-o %j} %{-param*}\
780 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\
781 %{coverage:-fprofile-arcs -ftest-coverage}";
783 static const char *asm_options =
784 "%{--target-help:%:print-asm-header()} "
786 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
787 to the assembler equivalents. */
788 "%{v} %{w:-W} %{I*} "
790 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
792 static const char *invoke_as =
793 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
795 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
796 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
800 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
801 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
805 /* Some compilers have limits on line lengths, and the multilib_select
806 and/or multilib_matches strings can be very long, so we build them at
808 static struct obstack multilib_obstack;
809 static const char *multilib_select;
810 static const char *multilib_matches;
811 static const char *multilib_defaults;
812 static const char *multilib_exclusions;
814 /* Check whether a particular argument is a default argument. */
816 #ifndef MULTILIB_DEFAULTS
817 #define MULTILIB_DEFAULTS { "" }
820 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
822 #ifndef DRIVER_SELF_SPECS
823 #define DRIVER_SELF_SPECS ""
826 /* Adding -fopenmp should imply pthreads. This is particularly important
827 for targets that use different start files and suchlike. */
828 #ifndef GOMP_SELF_SPECS
829 #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}"
832 static const char *const driver_self_specs[] = {
833 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
834 DRIVER_SELF_SPECS, CONFIGURE_SPECS, GOMP_SELF_SPECS
837 #ifndef OPTION_DEFAULT_SPECS
838 #define OPTION_DEFAULT_SPECS { "", "" }
847 static const struct default_spec
848 option_default_specs[] = { OPTION_DEFAULT_SPECS };
852 struct user_specs *next;
853 const char *filename;
856 static struct user_specs *user_specs_head, *user_specs_tail;
859 /* Record the mapping from file suffixes for compilation specs. */
863 const char *suffix; /* Use this compiler for input files
864 whose names end in this suffix. */
866 const char *spec; /* To use this compiler, run this spec. */
868 const char *cpp_spec; /* If non-NULL, substitute this spec
869 for `%C', rather than the usual
871 const int combinable; /* If nonzero, compiler can deal with
872 multiple source files at once (IMA). */
873 const int needs_preprocessing; /* If nonzero, source files need to
874 be run through a preprocessor. */
877 /* Pointer to a vector of `struct compiler' that gives the spec for
878 compiling a file, based on its suffix.
879 A file that does not end in any of these suffixes will be passed
880 unchanged to the loader and nothing else will be done to it.
882 An entry containing two 0s is used to terminate the vector.
884 If multiple entries match a file, the last matching one is used. */
886 static struct compiler *compilers;
888 /* Number of entries in `compilers', not counting the null terminator. */
890 static int n_compilers;
892 /* The default list of file name suffixes and their compilation specs. */
894 static const struct compiler default_compilers[] =
896 /* Add lists of suffixes of known languages here. If those languages
897 were not present when we built the driver, we will hit these copies
898 and be given a more meaningful error than "file not used since
899 linking is not done". */
900 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
901 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
902 {".mii", "#Objective-C++", 0, 0, 0},
903 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
904 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
905 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
906 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
907 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
908 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
909 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
910 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
911 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
912 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
913 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
914 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
915 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
916 {".r", "#Ratfor", 0, 0, 0},
917 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
918 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
919 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
920 /* Next come the entries for C. */
921 {".c", "@c", 0, 0, 1},
923 /* cc1 has an integrated ISO C preprocessor. We should invoke the
924 external preprocessor if -save-temps is given. */
925 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
927 %{traditional|ftraditional:\
928 %eGNU C no longer supports -traditional without -E}\
929 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
930 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
931 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
933 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
934 cc1 %(cpp_unique_options) %(cc1_options)}}}\
935 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
937 "%{!E:%e-E or -x required when input is from standard input}\
938 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
939 {".h", "@c-header", 0, 0, 0},
941 /* cc1 has an integrated ISO C preprocessor. We should invoke the
942 external preprocessor if -save-temps is given. */
943 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
945 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
946 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
947 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
949 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
950 %W{o*:--output-pch=%*}}%V}\
951 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
952 cc1 %(cpp_unique_options) %(cc1_options)\
953 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
954 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
955 {".i", "@cpp-output", 0, 0, 0},
957 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 1, 0},
958 {".s", "@assembler", 0, 1, 0},
960 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 1, 0},
961 {".sx", "@assembler-with-cpp", 0, 1, 0},
962 {".S", "@assembler-with-cpp", 0, 1, 0},
963 {"@assembler-with-cpp",
964 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
965 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
966 %{E|M|MM:%(cpp_debug_options)}\
967 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
968 as %(asm_debug) %(asm_options) %|.s %A }}}}"
970 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
971 %{E|M|MM:%(cpp_debug_options)}\
972 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
973 as %(asm_debug) %(asm_options) %m.s %A }}}}"
978 /* Mark end of table. */
982 /* Number of elements in default_compilers, not counting the terminator. */
984 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
986 typedef char *char_p; /* For DEF_VEC_P. */
988 DEF_VEC_ALLOC_P(char_p,heap);
990 /* A vector of options to give to the linker.
991 These options are accumulated by %x,
992 and substituted into the linker command with %X. */
993 static VEC(char_p,heap) *linker_options;
995 /* A vector of options to give to the assembler.
996 These options are accumulated by -Wa,
997 and substituted into the assembler command with %Y. */
998 static VEC(char_p,heap) *assembler_options;
1000 /* A vector of options to give to the preprocessor.
1001 These options are accumulated by -Wp,
1002 and substituted into the preprocessor command with %Z. */
1003 static VEC(char_p,heap) *preprocessor_options;
1006 skip_whitespace (char *p)
1010 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1011 be considered whitespace. */
1012 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1014 else if (*p == '\n' || *p == ' ' || *p == '\t')
1028 /* Structures to keep track of prefixes to try when looking for files. */
1032 const char *prefix; /* String to prepend to the path. */
1033 struct prefix_list *next; /* Next in linked list. */
1034 int require_machine_suffix; /* Don't use without machine_suffix. */
1035 /* 2 means try both machine_suffix and just_machine_suffix. */
1036 int priority; /* Sort key - priority within list. */
1037 int os_multilib; /* 1 if OS multilib scheme should be used,
1038 0 for GCC multilib scheme. */
1043 struct prefix_list *plist; /* List of prefixes to try */
1044 int max_len; /* Max length of a prefix in PLIST */
1045 const char *name; /* Name of this list (used in config stuff) */
1048 /* List of prefixes to try when looking for executables. */
1050 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1052 /* List of prefixes to try when looking for startup (crt0) files. */
1054 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1056 /* List of prefixes to try when looking for include files. */
1058 static struct path_prefix include_prefixes = { 0, 0, "include" };
1060 /* Suffix to attach to directories searched for commands.
1061 This looks like `MACHINE/VERSION/'. */
1063 static const char *machine_suffix = 0;
1065 /* Suffix to attach to directories searched for commands.
1066 This is just `MACHINE/'. */
1068 static const char *just_machine_suffix = 0;
1070 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1072 static const char *gcc_exec_prefix;
1074 /* Adjusted value of standard_libexec_prefix. */
1076 static const char *gcc_libexec_prefix;
1078 /* Default prefixes to attach to command names. */
1080 #ifndef STANDARD_STARTFILE_PREFIX_1
1081 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1083 #ifndef STANDARD_STARTFILE_PREFIX_2
1084 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1087 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1088 #undef MD_EXEC_PREFIX
1089 #undef MD_STARTFILE_PREFIX
1090 #undef MD_STARTFILE_PREFIX_1
1093 /* If no prefixes defined, use the null string, which will disable them. */
1094 #ifndef MD_EXEC_PREFIX
1095 #define MD_EXEC_PREFIX ""
1097 #ifndef MD_STARTFILE_PREFIX
1098 #define MD_STARTFILE_PREFIX ""
1100 #ifndef MD_STARTFILE_PREFIX_1
1101 #define MD_STARTFILE_PREFIX_1 ""
1104 /* These directories are locations set at configure-time based on the
1105 --prefix option provided to configure. Their initializers are
1106 defined in Makefile.in. These paths are not *directly* used when
1107 gcc_exec_prefix is set because, in that case, we know where the
1108 compiler has been installed, and use paths relative to that
1109 location instead. */
1110 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1111 static const char *const standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1112 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1113 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1115 /* For native compilers, these are well-known paths containing
1116 components that may be provided by the system. For cross
1117 compilers, these paths are not used. */
1118 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1119 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1120 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1121 static const char *const standard_startfile_prefix_1
1122 = STANDARD_STARTFILE_PREFIX_1;
1123 static const char *const standard_startfile_prefix_2
1124 = STANDARD_STARTFILE_PREFIX_2;
1126 /* A relative path to be used in finding the location of tools
1127 relative to the driver. */
1128 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1130 /* Subdirectory to use for locating libraries. Set by
1131 set_multilib_dir based on the compilation options. */
1133 static const char *multilib_dir;
1135 /* Subdirectory to use for locating libraries in OS conventions. Set by
1136 set_multilib_dir based on the compilation options. */
1138 static const char *multilib_os_dir;
1140 /* Structure to keep track of the specs that have been defined so far.
1141 These are accessed using %(specname) or %[specname] in a compiler
1146 /* The following 2 fields must be first */
1147 /* to allow EXTRA_SPECS to be initialized */
1148 const char *name; /* name of the spec. */
1149 const char *ptr; /* available ptr if no static pointer */
1151 /* The following fields are not initialized */
1152 /* by EXTRA_SPECS */
1153 const char **ptr_spec; /* pointer to the spec itself. */
1154 struct spec_list *next; /* Next spec in linked list. */
1155 int name_len; /* length of the name */
1156 int alloc_p; /* whether string was allocated */
1159 #define INIT_STATIC_SPEC(NAME,PTR) \
1160 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1162 /* List of statically defined specs. */
1163 static struct spec_list static_specs[] =
1165 INIT_STATIC_SPEC ("asm", &asm_spec),
1166 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1167 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1168 INIT_STATIC_SPEC ("asm_options", &asm_options),
1169 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1170 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1171 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1172 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1173 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1174 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1175 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1176 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1177 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1178 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1179 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec),
1180 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1181 INIT_STATIC_SPEC ("link", &link_spec),
1182 INIT_STATIC_SPEC ("lib", &lib_spec),
1183 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec),
1184 INIT_STATIC_SPEC ("mflib", &mflib_spec),
1185 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec),
1186 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1187 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1188 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1189 INIT_STATIC_SPEC ("version", &compiler_version),
1190 INIT_STATIC_SPEC ("multilib", &multilib_select),
1191 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1192 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1193 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1194 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1195 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1196 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1197 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec),
1198 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec),
1199 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec),
1200 INIT_STATIC_SPEC ("lto_libgcc", <o_libgcc_spec),
1201 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1202 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1203 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1204 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1205 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1206 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec),
1207 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1208 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1211 #ifdef EXTRA_SPECS /* additional specs needed */
1212 /* Structure to keep track of just the first two args of a spec_list.
1213 That is all that the EXTRA_SPECS macro gives us. */
1216 const char *const name;
1217 const char *const ptr;
1220 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1221 static struct spec_list *extra_specs = (struct spec_list *) 0;
1224 /* List of dynamically allocates specs that have been defined so far. */
1226 static struct spec_list *specs = (struct spec_list *) 0;
1228 /* List of static spec functions. */
1230 static const struct spec_function static_spec_functions[] =
1232 { "getenv", getenv_spec_function },
1233 { "if-exists", if_exists_spec_function },
1234 { "if-exists-else", if_exists_else_spec_function },
1235 { "replace-outfile", replace_outfile_spec_function },
1236 { "remove-outfile", remove_outfile_spec_function },
1237 { "version-compare", version_compare_spec_function },
1238 { "include", include_spec_function },
1239 { "find-file", find_file_spec_function },
1240 { "find-plugindir", find_plugindir_spec_function },
1241 { "print-asm-header", print_asm_header_spec_function },
1242 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function },
1243 { "compare-debug-self-opt", compare_debug_self_opt_spec_function },
1244 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function },
1245 #ifdef EXTRA_SPEC_FUNCTIONS
1246 EXTRA_SPEC_FUNCTIONS
1251 static int processing_spec_function;
1253 /* Add appropriate libgcc specs to OBSTACK, taking into account
1254 various permutations of -shared-libgcc, -shared, and such. */
1256 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1258 #ifndef USE_LD_AS_NEEDED
1259 #define USE_LD_AS_NEEDED 0
1263 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1264 const char *static_name, const char *eh_name)
1268 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}"
1269 "%{!static:%{!static-libgcc:"
1270 #if USE_LD_AS_NEEDED
1271 "%{!shared-libgcc:",
1272 static_name, " --as-needed ", shared_name, " --no-as-needed"
1275 shared_name, "%{!shared: ", static_name, "}"
1279 "%{!shared-libgcc:", static_name, " ", eh_name, "}"
1280 "%{shared-libgcc:", shared_name, " ", static_name, "}"
1284 "%{shared-libgcc:", shared_name, "}"
1285 "%{!shared-libgcc:", static_name, "}"
1288 "%{shared:", shared_name, "}"
1293 obstack_grow (obstack, buf, strlen (buf));
1296 #endif /* ENABLE_SHARED_LIBGCC */
1298 /* Initialize the specs lookup routines. */
1303 struct spec_list *next = (struct spec_list *) 0;
1304 struct spec_list *sl = (struct spec_list *) 0;
1308 return; /* Already initialized. */
1311 fnotice (stderr, "Using built-in specs.\n");
1314 extra_specs = XCNEWVEC (struct spec_list, ARRAY_SIZE (extra_specs_1));
1316 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1318 sl = &extra_specs[i];
1319 sl->name = extra_specs_1[i].name;
1320 sl->ptr = extra_specs_1[i].ptr;
1322 sl->name_len = strlen (sl->name);
1323 sl->ptr_spec = &sl->ptr;
1328 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1330 sl = &static_specs[i];
1335 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1336 /* ??? If neither -shared-libgcc nor --static-libgcc was
1337 seen, then we should be making an educated guess. Some proposed
1338 heuristics for ELF include:
1340 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1341 program will be doing dynamic loading, which will likely
1342 need the shared libgcc.
1344 (2) If "-ldl", then it's also a fair bet that we're doing
1347 (3) For each ET_DYN we're linking against (either through -lfoo
1348 or /some/path/foo.so), check to see whether it or one of
1349 its dependencies depends on a shared libgcc.
1353 If the runtime is fixed to look for program headers instead
1354 of calling __register_frame_info at all, for each object,
1355 use the shared libgcc if any EH symbol referenced.
1357 If crtstuff is fixed to not invoke __register_frame_info
1358 automatically, for each object, use the shared libgcc if
1359 any non-empty unwind section found.
1361 Doing any of this probably requires invoking an external program to
1362 do the actual object file scanning. */
1364 const char *p = libgcc_spec;
1367 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1368 when given the proper command line arguments. */
1371 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1373 init_gcc_specs (&obstack,
1375 #ifdef USE_LIBUNWIND_EXCEPTIONS
1381 #ifdef USE_LIBUNWIND_EXCEPTIONS
1382 # ifdef HAVE_LD_STATIC_DYNAMIC
1383 " %{!static:-Bstatic} -lunwind %{!static:-Bdynamic}"
1393 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1395 /* Ug. We don't know shared library extensions. Hope that
1396 systems that use this form don't do shared libraries. */
1397 init_gcc_specs (&obstack,
1401 #ifdef USE_LIBUNWIND_EXCEPTIONS
1410 obstack_1grow (&obstack, *p);
1411 in_sep = (*p == ' ');
1416 obstack_1grow (&obstack, '\0');
1417 libgcc_spec = XOBFINISH (&obstack, const char *);
1420 #ifdef USE_AS_TRADITIONAL_FORMAT
1421 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1423 static const char tf[] = "--traditional-format ";
1424 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1425 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1426 asm_spec = XOBFINISH (&obstack, const char *);
1430 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC
1431 # ifdef LINK_BUILDID_SPEC
1432 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1433 obstack_grow (&obstack, LINK_BUILDID_SPEC, sizeof(LINK_BUILDID_SPEC) - 1);
1435 # ifdef LINK_EH_SPEC
1436 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1437 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1439 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1440 link_spec = XOBFINISH (&obstack, const char *);
1446 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1447 removed; If the spec starts with a + then SPEC is added to the end of the
1451 set_spec (const char *name, const char *spec)
1453 struct spec_list *sl;
1454 const char *old_spec;
1455 int name_len = strlen (name);
1458 /* If this is the first call, initialize the statically allocated specs. */
1461 struct spec_list *next = (struct spec_list *) 0;
1462 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1464 sl = &static_specs[i];
1471 /* See if the spec already exists. */
1472 for (sl = specs; sl; sl = sl->next)
1473 if (name_len == sl->name_len && !strcmp (sl->name, name))
1478 /* Not found - make it. */
1479 sl = XNEW (struct spec_list);
1480 sl->name = xstrdup (name);
1481 sl->name_len = name_len;
1482 sl->ptr_spec = &sl->ptr;
1484 *(sl->ptr_spec) = "";
1489 old_spec = *(sl->ptr_spec);
1490 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1491 ? concat (old_spec, spec + 1, NULL)
1496 fnotice (stderr, "Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1499 /* Free the old spec. */
1500 if (old_spec && sl->alloc_p)
1501 free (CONST_CAST(char *, old_spec));
1506 /* Accumulate a command (program name and args), and run it. */
1508 typedef const char *const_char_p; /* For DEF_VEC_P. */
1509 DEF_VEC_P(const_char_p);
1510 DEF_VEC_ALLOC_P(const_char_p,heap);
1512 /* Vector of pointers to arguments in the current line of specifications. */
1514 static VEC(const_char_p,heap) *argbuf;
1516 /* Position in the argbuf vector containing the name of the output file
1517 (the value associated with the "-o" flag). */
1519 static int have_o_argbuf_index = 0;
1521 /* Were the options -c, -S or -E passed. */
1522 static int have_c = 0;
1524 /* Was the option -o passed. */
1525 static int have_o = 0;
1527 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1528 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1531 static struct temp_name {
1532 const char *suffix; /* suffix associated with the code. */
1533 int length; /* strlen (suffix). */
1534 int unique; /* Indicates whether %g or %u/%U was used. */
1535 const char *filename; /* associated filename. */
1536 int filename_length; /* strlen (filename). */
1537 struct temp_name *next;
1540 /* Number of commands executed so far. */
1542 static int execution_count;
1544 /* Number of commands that exited with a signal. */
1546 static int signal_count;
1548 /* Allocate the argument vector. */
1553 argbuf = VEC_alloc (const_char_p, heap, 10);
1556 /* Clear out the vector of arguments (after a command is executed). */
1561 VEC_truncate (const_char_p, argbuf, 0);
1564 /* Add one argument to the vector at the end.
1565 This is done when a space is seen or at the end of the line.
1566 If DELETE_ALWAYS is nonzero, the arg is a filename
1567 and the file should be deleted eventually.
1568 If DELETE_FAILURE is nonzero, the arg is a filename
1569 and the file should be deleted if this compilation fails. */
1572 store_arg (const char *arg, int delete_always, int delete_failure)
1574 VEC_safe_push (const_char_p, heap, argbuf, arg);
1576 if (strcmp (arg, "-o") == 0)
1577 have_o_argbuf_index = VEC_length (const_char_p, argbuf);
1578 if (delete_always || delete_failure)
1581 /* If the temporary file we should delete is specified as
1582 part of a joined argument extract the filename. */
1584 && (p = strrchr (arg, '=')))
1586 record_temp_file (arg, delete_always, delete_failure);
1590 /* Load specs from a file name named FILENAME, replacing occurrences of
1591 various different types of line-endings, \r\n, \n\r and just \r, with
1595 load_specs (const char *filename)
1599 struct stat statbuf;
1606 fnotice (stderr, "Reading specs from %s\n", filename);
1608 /* Open and stat the file. */
1609 desc = open (filename, O_RDONLY, 0);
1611 pfatal_with_name (filename);
1612 if (stat (filename, &statbuf) < 0)
1613 pfatal_with_name (filename);
1615 /* Read contents of file into BUFFER. */
1616 buffer = XNEWVEC (char, statbuf.st_size + 1);
1617 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1619 pfatal_with_name (filename);
1620 buffer[readlen] = 0;
1623 specs = XNEWVEC (char, readlen + 1);
1625 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1631 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1633 else if (*(buffer_p + 1) == '\n') /* \r\n */
1647 /* Read compilation specs from a file named FILENAME,
1648 replacing the default ones.
1650 A suffix which starts with `*' is a definition for
1651 one of the machine-specific sub-specs. The "suffix" should be
1652 *asm, *cc1, *cpp, *link, *startfile, etc.
1653 The corresponding spec is stored in asm_spec, etc.,
1654 rather than in the `compilers' vector.
1656 Anything invalid in the file is a fatal error. */
1659 read_specs (const char *filename, int main_p)
1664 buffer = load_specs (filename);
1666 /* Scan BUFFER for specs, putting them in the vector. */
1672 char *in, *out, *p1, *p2, *p3;
1674 /* Advance P in BUFFER to the next nonblank nocomment line. */
1675 p = skip_whitespace (p);
1679 /* Is this a special command that starts with '%'? */
1680 /* Don't allow this for the main specs file, since it would
1681 encourage people to overwrite it. */
1682 if (*p == '%' && !main_p)
1685 while (*p && *p != '\n')
1691 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1692 && (p1[sizeof "%include" - 1] == ' '
1693 || p1[sizeof "%include" - 1] == '\t'))
1697 p1 += sizeof ("%include");
1698 while (*p1 == ' ' || *p1 == '\t')
1701 if (*p1++ != '<' || p[-2] != '>')
1702 fatal_error ("specs %%include syntax malformed after "
1704 (long) (p1 - buffer + 1));
1707 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1708 read_specs (new_filename ? new_filename : p1, FALSE);
1711 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1712 && (p1[sizeof "%include_noerr" - 1] == ' '
1713 || p1[sizeof "%include_noerr" - 1] == '\t'))
1717 p1 += sizeof "%include_noerr";
1718 while (*p1 == ' ' || *p1 == '\t')
1721 if (*p1++ != '<' || p[-2] != '>')
1722 fatal_error ("specs %%include syntax malformed after "
1724 (long) (p1 - buffer + 1));
1727 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1729 read_specs (new_filename, FALSE);
1730 else if (verbose_flag)
1731 fnotice (stderr, "could not find specs file %s\n", p1);
1734 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1735 && (p1[sizeof "%rename" - 1] == ' '
1736 || p1[sizeof "%rename" - 1] == '\t'))
1739 struct spec_list *sl;
1740 struct spec_list *newsl;
1742 /* Get original name. */
1743 p1 += sizeof "%rename";
1744 while (*p1 == ' ' || *p1 == '\t')
1747 if (! ISALPHA ((unsigned char) *p1))
1748 fatal_error ("specs %%rename syntax malformed after "
1750 (long) (p1 - buffer));
1753 while (*p2 && !ISSPACE ((unsigned char) *p2))
1756 if (*p2 != ' ' && *p2 != '\t')
1757 fatal_error ("specs %%rename syntax malformed after "
1759 (long) (p2 - buffer));
1763 while (*p2 == ' ' || *p2 == '\t')
1766 if (! ISALPHA ((unsigned char) *p2))
1767 fatal_error ("specs %%rename syntax malformed after "
1769 (long) (p2 - buffer));
1771 /* Get new spec name. */
1773 while (*p3 && !ISSPACE ((unsigned char) *p3))
1777 fatal_error ("specs %%rename syntax malformed after "
1779 (long) (p3 - buffer));
1782 for (sl = specs; sl; sl = sl->next)
1783 if (name_len == sl->name_len && !strcmp (sl->name, p1))
1787 fatal_error ("specs %s spec was not found to be renamed", p1);
1789 if (strcmp (p1, p2) == 0)
1792 for (newsl = specs; newsl; newsl = newsl->next)
1793 if (strcmp (newsl->name, p2) == 0)
1794 fatal_error ("%s: attempt to rename spec %qs to "
1795 "already defined spec %qs",
1800 fnotice (stderr, "rename spec %s to %s\n", p1, p2);
1802 fnotice (stderr, "spec is '%s'\n\n", *(sl->ptr_spec));
1806 set_spec (p2, *(sl->ptr_spec));
1808 free (CONST_CAST (char *, *(sl->ptr_spec)));
1810 *(sl->ptr_spec) = "";
1815 fatal_error ("specs unknown %% command after %ld characters",
1816 (long) (p1 - buffer));
1819 /* Find the colon that should end the suffix. */
1821 while (*p1 && *p1 != ':' && *p1 != '\n')
1824 /* The colon shouldn't be missing. */
1826 fatal_error ("specs file malformed after %ld characters",
1827 (long) (p1 - buffer));
1829 /* Skip back over trailing whitespace. */
1831 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
1834 /* Copy the suffix to a string. */
1835 suffix = save_string (p, p2 - p);
1836 /* Find the next line. */
1837 p = skip_whitespace (p1 + 1);
1839 fatal_error ("specs file malformed after %ld characters",
1840 (long) (p - buffer));
1843 /* Find next blank line or end of string. */
1844 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
1847 /* Specs end at the blank line and do not include the newline. */
1848 spec = save_string (p, p1 - p);
1851 /* Delete backslash-newline sequences from the spec. */
1856 if (in[0] == '\\' && in[1] == '\n')
1858 else if (in[0] == '#')
1859 while (*in && *in != '\n')
1867 if (suffix[0] == '*')
1869 if (! strcmp (suffix, "*link_command"))
1870 link_command_spec = spec;
1872 set_spec (suffix + 1, spec);
1876 /* Add this pair to the vector. */
1878 = XRESIZEVEC (struct compiler, compilers, n_compilers + 2);
1880 compilers[n_compilers].suffix = suffix;
1881 compilers[n_compilers].spec = spec;
1883 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
1887 link_command_spec = spec;
1890 if (link_command_spec == 0)
1891 fatal_error ("spec file has no spec for linking");
1894 /* Record the names of temporary files we tell compilers to write,
1895 and delete them at the end of the run. */
1897 /* This is the common prefix we use to make temp file names.
1898 It is chosen once for each run of this program.
1899 It is substituted into a spec by %g or %j.
1900 Thus, all temp file names contain this prefix.
1901 In practice, all temp file names start with this prefix.
1903 This prefix comes from the envvar TMPDIR if it is defined;
1904 otherwise, from the P_tmpdir macro if that is defined;
1905 otherwise, in /usr/tmp or /tmp;
1906 or finally the current directory if all else fails. */
1908 static const char *temp_filename;
1910 /* Length of the prefix. */
1912 static int temp_filename_length;
1914 /* Define the list of temporary files to delete. */
1919 struct temp_file *next;
1922 /* Queue of files to delete on success or failure of compilation. */
1923 static struct temp_file *always_delete_queue;
1924 /* Queue of files to delete on failure of compilation. */
1925 static struct temp_file *failure_delete_queue;
1927 /* Record FILENAME as a file to be deleted automatically.
1928 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
1929 otherwise delete it in any case.
1930 FAIL_DELETE nonzero means delete it if a compilation step fails;
1931 otherwise delete it in any case. */
1934 record_temp_file (const char *filename, int always_delete, int fail_delete)
1936 char *const name = xstrdup (filename);
1940 struct temp_file *temp;
1941 for (temp = always_delete_queue; temp; temp = temp->next)
1942 if (! strcmp (name, temp->name))
1945 temp = XNEW (struct temp_file);
1946 temp->next = always_delete_queue;
1948 always_delete_queue = temp;
1955 struct temp_file *temp;
1956 for (temp = failure_delete_queue; temp; temp = temp->next)
1957 if (! strcmp (name, temp->name))
1960 temp = XNEW (struct temp_file);
1961 temp->next = failure_delete_queue;
1963 failure_delete_queue = temp;
1969 /* Delete all the temporary files whose names we previously recorded. */
1971 #ifndef DELETE_IF_ORDINARY
1972 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
1975 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
1976 if (unlink (NAME) < 0) \
1978 perror_with_name (NAME); \
1983 delete_if_ordinary (const char *name)
1989 printf ("Delete %s? (y or n) ", name);
1993 while ((c = getchar ()) != '\n' && c != EOF)
1996 if (i == 'y' || i == 'Y')
1998 DELETE_IF_ORDINARY (name, st, verbose_flag);
2002 delete_temp_files (void)
2004 struct temp_file *temp;
2006 for (temp = always_delete_queue; temp; temp = temp->next)
2007 delete_if_ordinary (temp->name);
2008 always_delete_queue = 0;
2011 /* Delete all the files to be deleted on error. */
2014 delete_failure_queue (void)
2016 struct temp_file *temp;
2018 for (temp = failure_delete_queue; temp; temp = temp->next)
2019 delete_if_ordinary (temp->name);
2023 clear_failure_queue (void)
2025 failure_delete_queue = 0;
2028 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2030 If DO_MULTI is true iterate over the paths twice, first with multilib
2031 suffix then without, otherwise iterate over the paths once without
2032 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2033 to avoid visiting the same path twice, but we could do better. For
2034 instance, /usr/lib/../lib is considered different from /usr/lib.
2035 At least EXTRA_SPACE chars past the end of the path passed to
2036 CALLBACK are available for use by the callback.
2037 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2039 Returns the value returned by CALLBACK. */
2042 for_each_path (const struct path_prefix *paths,
2045 void *(*callback) (char *, void *),
2046 void *callback_info)
2048 struct prefix_list *pl;
2049 const char *multi_dir = NULL;
2050 const char *multi_os_dir = NULL;
2051 const char *multi_suffix;
2052 const char *just_multi_suffix;
2055 bool skip_multi_dir = false;
2056 bool skip_multi_os_dir = false;
2058 multi_suffix = machine_suffix;
2059 just_multi_suffix = just_machine_suffix;
2060 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0)
2062 multi_dir = concat (multilib_dir, dir_separator_str, NULL);
2063 multi_suffix = concat (multi_suffix, multi_dir, NULL);
2064 just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL);
2066 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0)
2067 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL);
2071 size_t multi_dir_len = 0;
2072 size_t multi_os_dir_len = 0;
2074 size_t just_suffix_len;
2078 multi_dir_len = strlen (multi_dir);
2080 multi_os_dir_len = strlen (multi_os_dir);
2081 suffix_len = strlen (multi_suffix);
2082 just_suffix_len = strlen (just_multi_suffix);
2086 len = paths->max_len + extra_space + 1;
2087 if (suffix_len > multi_os_dir_len)
2090 len += multi_os_dir_len;
2091 path = XNEWVEC (char, len);
2094 for (pl = paths->plist; pl != 0; pl = pl->next)
2096 len = strlen (pl->prefix);
2097 memcpy (path, pl->prefix, len);
2099 /* Look first in MACHINE/VERSION subdirectory. */
2100 if (!skip_multi_dir)
2102 memcpy (path + len, multi_suffix, suffix_len + 1);
2103 ret = callback (path, callback_info);
2108 /* Some paths are tried with just the machine (ie. target)
2109 subdir. This is used for finding as, ld, etc. */
2111 && pl->require_machine_suffix == 2)
2113 memcpy (path + len, just_multi_suffix, just_suffix_len + 1);
2114 ret = callback (path, callback_info);
2119 /* Now try the base path. */
2120 if (!pl->require_machine_suffix
2121 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir))
2123 const char *this_multi;
2124 size_t this_multi_len;
2126 if (pl->os_multilib)
2128 this_multi = multi_os_dir;
2129 this_multi_len = multi_os_dir_len;
2133 this_multi = multi_dir;
2134 this_multi_len = multi_dir_len;
2138 memcpy (path + len, this_multi, this_multi_len + 1);
2142 ret = callback (path, callback_info);
2150 if (multi_dir == NULL && multi_os_dir == NULL)
2153 /* Run through the paths again, this time without multilibs.
2154 Don't repeat any we have already seen. */
2157 free (CONST_CAST (char *, multi_dir));
2159 free (CONST_CAST (char *, multi_suffix));
2160 multi_suffix = machine_suffix;
2161 free (CONST_CAST (char *, just_multi_suffix));
2162 just_multi_suffix = just_machine_suffix;
2165 skip_multi_dir = true;
2168 free (CONST_CAST (char *, multi_os_dir));
2169 multi_os_dir = NULL;
2172 skip_multi_os_dir = true;
2177 free (CONST_CAST (char *, multi_dir));
2178 free (CONST_CAST (char *, multi_suffix));
2179 free (CONST_CAST (char *, just_multi_suffix));
2182 free (CONST_CAST (char *, multi_os_dir));
2188 /* Callback for build_search_list. Adds path to obstack being built. */
2190 struct add_to_obstack_info {
2197 add_to_obstack (char *path, void *data)
2199 struct add_to_obstack_info *info = (struct add_to_obstack_info *) data;
2201 if (info->check_dir && !is_directory (path, false))
2204 if (!info->first_time)
2205 obstack_1grow (info->ob, PATH_SEPARATOR);
2207 obstack_grow (info->ob, path, strlen (path));
2209 info->first_time = false;
2213 /* Add or change the value of an environment variable, outputting the
2214 change to standard error if in verbose mode. */
2216 xputenv (const char *string)
2219 fnotice (stderr, "%s\n", string);
2220 putenv (CONST_CAST (char *, string));
2223 /* Build a list of search directories from PATHS.
2224 PREFIX is a string to prepend to the list.
2225 If CHECK_DIR_P is true we ensure the directory exists.
2226 If DO_MULTI is true, multilib paths are output first, then
2228 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2229 It is also used by the --print-search-dirs flag. */
2232 build_search_list (const struct path_prefix *paths, const char *prefix,
2233 bool check_dir, bool do_multi)
2235 struct add_to_obstack_info info;
2237 info.ob = &collect_obstack;
2238 info.check_dir = check_dir;
2239 info.first_time = true;
2241 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2242 obstack_1grow (&collect_obstack, '=');
2244 for_each_path (paths, do_multi, 0, add_to_obstack, &info);
2246 obstack_1grow (&collect_obstack, '\0');
2247 return XOBFINISH (&collect_obstack, char *);
2250 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2254 putenv_from_prefixes (const struct path_prefix *paths, const char *env_var,
2257 xputenv (build_search_list (paths, env_var, true, do_multi));
2260 /* Check whether NAME can be accessed in MODE. This is like access,
2261 except that it never considers directories to be executable. */
2264 access_check (const char *name, int mode)
2270 if (stat (name, &st) < 0
2271 || S_ISDIR (st.st_mode))
2275 return access (name, mode);
2278 /* Callback for find_a_file. Appends the file name to the directory
2279 path. If the resulting file exists in the right mode, return the
2280 full pathname to the file. */
2282 struct file_at_path_info {
2291 file_at_path (char *path, void *data)
2293 struct file_at_path_info *info = (struct file_at_path_info *) data;
2294 size_t len = strlen (path);
2296 memcpy (path + len, info->name, info->name_len);
2297 len += info->name_len;
2299 /* Some systems have a suffix for executable files.
2300 So try appending that first. */
2301 if (info->suffix_len)
2303 memcpy (path + len, info->suffix, info->suffix_len + 1);
2304 if (access_check (path, info->mode) == 0)
2309 if (access_check (path, info->mode) == 0)
2315 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2316 access to check permissions. If DO_MULTI is true, search multilib
2317 paths then non-multilib paths, otherwise do not search multilib paths.
2318 Return 0 if not found, otherwise return its name, allocated with malloc. */
2321 find_a_file (const struct path_prefix *pprefix, const char *name, int mode,
2324 struct file_at_path_info info;
2326 #ifdef DEFAULT_ASSEMBLER
2327 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2328 return xstrdup (DEFAULT_ASSEMBLER);
2331 #ifdef DEFAULT_LINKER
2332 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2333 return xstrdup (DEFAULT_LINKER);
2336 /* Determine the filename to execute (special case for absolute paths). */
2338 if (IS_ABSOLUTE_PATH (name))
2340 if (access (name, mode) == 0)
2341 return xstrdup (name);
2347 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "";
2348 info.name_len = strlen (info.name);
2349 info.suffix_len = strlen (info.suffix);
2352 return (char*) for_each_path (pprefix, do_multi,
2353 info.name_len + info.suffix_len,
2354 file_at_path, &info);
2357 /* Ranking of prefixes in the sort list. -B prefixes are put before
2360 enum path_prefix_priority
2362 PREFIX_PRIORITY_B_OPT,
2363 PREFIX_PRIORITY_LAST
2366 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2367 order according to PRIORITY. Within each PRIORITY, new entries are
2370 If WARN is nonzero, we will warn if no file is found
2371 through this prefix. WARN should point to an int
2372 which will be set to 1 if this entry is used.
2374 COMPONENT is the value to be passed to update_path.
2376 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2377 the complete value of machine_suffix.
2378 2 means try both machine_suffix and just_machine_suffix. */
2381 add_prefix (struct path_prefix *pprefix, const char *prefix,
2382 const char *component, /* enum prefix_priority */ int priority,
2383 int require_machine_suffix, int os_multilib)
2385 struct prefix_list *pl, **prev;
2388 for (prev = &pprefix->plist;
2389 (*prev) != NULL && (*prev)->priority <= priority;
2390 prev = &(*prev)->next)
2393 /* Keep track of the longest prefix. */
2395 prefix = update_path (prefix, component);
2396 len = strlen (prefix);
2397 if (len > pprefix->max_len)
2398 pprefix->max_len = len;
2400 pl = XNEW (struct prefix_list);
2401 pl->prefix = prefix;
2402 pl->require_machine_suffix = require_machine_suffix;
2403 pl->priority = priority;
2404 pl->os_multilib = os_multilib;
2406 /* Insert after PREV. */
2411 /* Same as add_prefix, but prepending target_system_root to prefix. */
2412 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2414 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2415 const char *component,
2416 /* enum prefix_priority */ int priority,
2417 int require_machine_suffix, int os_multilib)
2419 if (!IS_ABSOLUTE_PATH (prefix))
2420 fatal_error ("system path %qs is not absolute", prefix);
2422 if (target_system_root)
2424 if (target_sysroot_suffix)
2425 prefix = concat (target_sysroot_suffix, prefix, NULL);
2426 prefix = concat (target_system_root, prefix, NULL);
2428 /* We have to override this because GCC's notion of sysroot
2429 moves along with GCC. */
2433 add_prefix (pprefix, prefix, component, priority,
2434 require_machine_suffix, os_multilib);
2437 /* Execute the command specified by the arguments on the current line of spec.
2438 When using pipes, this includes several piped-together commands
2439 with `|' between them.
2441 Return 0 if successful, -1 if failed. */
2447 int n_commands; /* # of command. */
2449 struct pex_obj *pex;
2452 const char *prog; /* program name. */
2453 const char **argv; /* vector of args. */
2457 struct command *commands; /* each command buffer with above info. */
2459 gcc_assert (!processing_spec_function);
2463 string = find_a_file (&exec_prefixes,
2464 VEC_index (const_char_p, argbuf, 0), X_OK, false);
2466 VEC_replace (const_char_p, argbuf, 0, string);
2467 insert_wrapper (wrapper_string);
2470 /* Count # of piped commands. */
2471 for (n_commands = 1, i = 0; VEC_iterate (const_char_p, argbuf, i, arg); i++)
2472 if (strcmp (arg, "|") == 0)
2475 /* Get storage for each command. */
2476 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2478 /* Split argbuf into its separate piped processes,
2479 and record info about each one.
2480 Also search for the programs that are to be run. */
2482 VEC_safe_push (const_char_p, heap, argbuf, 0);
2484 commands[0].prog = VEC_index (const_char_p, argbuf, 0); /* first command. */
2485 commands[0].argv = VEC_address (const_char_p, argbuf);
2487 if (!wrapper_string)
2489 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false);
2490 commands[0].argv[0] = (string) ? string : commands[0].argv[0];
2493 for (n_commands = 1, i = 0; VEC_iterate (const_char_p, argbuf, i, arg); i++)
2494 if (arg && strcmp (arg, "|") == 0)
2495 { /* each command. */
2496 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2497 fatal_error ("-pipe not supported");
2499 VEC_replace (const_char_p, argbuf, i, 0); /* Termination of
2501 commands[n_commands].prog = VEC_index (const_char_p, argbuf, i + 1);
2502 commands[n_commands].argv
2503 = &(VEC_address (const_char_p, argbuf))[i + 1];
2504 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2507 commands[n_commands].argv[0] = string;
2511 /* If -v, print what we are about to do, and maybe query. */
2515 /* For help listings, put a blank line between sub-processes. */
2516 if (print_help_list)
2517 fputc ('\n', stderr);
2519 /* Print each piped command as a separate line. */
2520 for (i = 0; i < n_commands; i++)
2522 const char *const *j;
2524 if (verbose_only_flag)
2526 for (j = commands[i].argv; *j; j++)
2529 for (p = *j; *p; ++p)
2530 if (!ISALNUM ((unsigned char) *p)
2531 && *p != '_' && *p != '/' && *p != '-' && *p != '.')
2535 fprintf (stderr, " \"");
2536 for (p = *j; *p; ++p)
2538 if (*p == '"' || *p == '\\' || *p == '$')
2539 fputc ('\\', stderr);
2542 fputc ('"', stderr);
2545 fprintf (stderr, " %s", *j);
2549 for (j = commands[i].argv; *j; j++)
2550 fprintf (stderr, " %s", *j);
2552 /* Print a pipe symbol after all but the last command. */
2553 if (i + 1 != n_commands)
2554 fprintf (stderr, " |");
2555 fprintf (stderr, "\n");
2558 if (verbose_only_flag != 0)
2560 /* verbose_only_flag should act as if the spec was
2561 executed, so increment execution_count before
2562 returning. This prevents spurious warnings about
2563 unused linker input files, etc. */
2568 fnotice (stderr, "\nGo ahead? (y or n) ");
2572 while (getchar () != '\n')
2575 if (i != 'y' && i != 'Y')
2580 #ifdef ENABLE_VALGRIND_CHECKING
2581 /* Run the each command through valgrind. To simplify prepending the
2582 path to valgrind and the option "-q" (for quiet operation unless
2583 something triggers), we allocate a separate argv array. */
2585 for (i = 0; i < n_commands; i++)
2591 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2594 argv = XALLOCAVEC (const char *, argc + 3);
2596 argv[0] = VALGRIND_PATH;
2598 for (j = 2; j < argc + 2; j++)
2599 argv[j] = commands[i].argv[j - 2];
2602 commands[i].argv = argv;
2603 commands[i].prog = argv[0];
2607 /* Run each piped subprocess. */
2609 pex = pex_init (PEX_USE_PIPES | ((report_times || report_times_to_file)
2610 ? PEX_RECORD_TIMES : 0),
2611 progname, temp_filename);
2613 fatal_error ("pex_init failed: %m");
2615 for (i = 0; i < n_commands; i++)
2619 const char *string = commands[i].argv[0];
2621 errmsg = pex_run (pex,
2622 ((i + 1 == n_commands ? PEX_LAST : 0)
2623 | (string == commands[i].prog ? PEX_SEARCH : 0)),
2624 string, CONST_CAST (char **, commands[i].argv),
2629 fatal_error (errmsg);
2633 pfatal_with_name (errmsg);
2637 if (string != commands[i].prog)
2638 free (CONST_CAST (char *, string));
2643 /* Wait for all the subprocesses to finish. */
2647 struct pex_time *times = NULL;
2650 statuses = (int *) alloca (n_commands * sizeof (int));
2651 if (!pex_get_status (pex, n_commands, statuses))
2652 fatal_error ("failed to get exit status: %m");
2654 if (report_times || report_times_to_file)
2656 times = (struct pex_time *) alloca (n_commands * sizeof (struct pex_time));
2657 if (!pex_get_times (pex, n_commands, times))
2658 fatal_error ("failed to get process times: %m");
2663 for (i = 0; i < n_commands; ++i)
2665 int status = statuses[i];
2667 if (WIFSIGNALED (status))
2670 /* SIGPIPE is a special case. It happens in -pipe mode
2671 when the compiler dies before the preprocessor is done,
2672 or the assembler dies before the compiler is done.
2673 There's generally been an error already, and this is
2674 just fallout. So don't generate another error unless
2675 we would otherwise have succeeded. */
2676 if (WTERMSIG (status) == SIGPIPE
2677 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2684 internal_error ("%s (program %s)",
2685 strsignal (WTERMSIG (status)), commands[i].prog);
2687 else if (WIFEXITED (status)
2688 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2690 if (WEXITSTATUS (status) > greatest_status)
2691 greatest_status = WEXITSTATUS (status);
2695 if (report_times || report_times_to_file)
2697 struct pex_time *pt = ×[i];
2700 ut = ((double) pt->user_seconds
2701 + (double) pt->user_microseconds / 1.0e6);
2702 st = ((double) pt->system_seconds
2703 + (double) pt->system_microseconds / 1.0e6);
2708 fnotice (stderr, "# %s %.2f %.2f\n",
2709 commands[i].prog, ut, st);
2711 if (report_times_to_file)
2714 const char *const *j;
2716 fprintf (report_times_to_file, "%g %g", ut, st);
2718 for (j = &commands[i].prog; *j; j = &commands[i].argv[++c])
2721 for (p = *j; *p; ++p)
2722 if (*p == '"' || *p == '\\' || *p == '$'
2728 fprintf (report_times_to_file, " \"");
2729 for (p = *j; *p; ++p)
2731 if (*p == '"' || *p == '\\' || *p == '$')
2732 fputc ('\\', report_times_to_file);
2733 fputc (*p, report_times_to_file);
2735 fputc ('"', report_times_to_file);
2738 fprintf (report_times_to_file, " %s", *j);
2741 fputc ('\n', report_times_to_file);
2751 /* Find all the switches given to us
2752 and make a vector describing them.
2753 The elements of the vector are strings, one per switch given.
2754 If a switch uses following arguments, then the `part1' field
2755 is the switch itself and the `args' field
2756 is a null-terminated vector containing the following arguments.
2757 Bits in the `live_cond' field are:
2758 SWITCH_LIVE to indicate this switch is true in a conditional spec.
2759 SWITCH_FALSE to indicate this switch is overridden by a later switch.
2760 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
2761 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
2762 in all do_spec calls afterwards. Used for %<S from self specs.
2763 The `validated' field is nonzero if any spec has looked at this switch;
2764 if it remains zero at the end of the run, it must be meaningless. */
2766 #define SWITCH_LIVE 0x1
2767 #define SWITCH_FALSE 0x2
2768 #define SWITCH_IGNORE 0x4
2769 #define SWITCH_IGNORE_PERMANENTLY 0x8
2775 unsigned int live_cond;
2776 unsigned char validated;
2777 unsigned char ordering;
2780 static struct switchstr *switches;
2782 static int n_switches;
2784 static int n_switches_alloc;
2786 /* Set to zero if -fcompare-debug is disabled, positive if it's
2787 enabled and we're running the first compilation, negative if it's
2788 enabled and we're running the second compilation. For most of the
2789 time, it's in the range -1..1, but it can be temporarily set to 2
2790 or 3 to indicate that the -fcompare-debug flags didn't come from
2791 the command-line, but rather from the GCC_COMPARE_DEBUG environment
2792 variable, until a synthesized -fcompare-debug flag is added to the
2796 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
2797 int compare_debug_second;
2799 /* Set to the flags that should be passed to the second compilation in
2800 a -fcompare-debug compilation. */
2801 const char *compare_debug_opt;
2803 static struct switchstr *switches_debug_check[2];
2805 static int n_switches_debug_check[2];
2807 static int n_switches_alloc_debug_check[2];
2809 static char *debug_check_temp_file[2];
2811 /* Language is one of three things:
2813 1) The name of a real programming language.
2814 2) NULL, indicating that no one has figured out
2816 3) '*', indicating that the file should be passed
2821 const char *language;
2822 struct compiler *incompiler;
2827 /* Also a vector of input files specified. */
2829 static struct infile *infiles;
2833 static int n_infiles_alloc;
2835 /* True if multiple input files are being compiled to a single
2838 static bool combine_inputs;
2840 /* This counts the number of libraries added by lang_specific_driver, so that
2841 we can tell if there were any user supplied any files or libraries. */
2843 static int added_libraries;
2845 /* And a vector of corresponding output files is made up later. */
2847 const char **outfiles;
2849 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2851 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2852 is true if we should look for an executable suffix. DO_OBJ
2853 is true if we should look for an object suffix. */
2856 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
2857 int do_obj ATTRIBUTE_UNUSED)
2859 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2867 len = strlen (name);
2869 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2870 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2871 if (do_obj && len > 2
2872 && name[len - 2] == '.'
2873 && name[len - 1] == 'o')
2875 obstack_grow (&obstack, name, len - 2);
2876 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2877 name = XOBFINISH (&obstack, const char *);
2881 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2882 /* If there is no filetype, make it the executable suffix (which includes
2883 the "."). But don't get confused if we have just "-o". */
2884 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
2887 for (i = len - 1; i >= 0; i--)
2888 if (IS_DIR_SEPARATOR (name[i]))
2891 for (i++; i < len; i++)
2895 obstack_grow (&obstack, name, len);
2896 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
2897 strlen (TARGET_EXECUTABLE_SUFFIX));
2898 name = XOBFINISH (&obstack, const char *);
2905 /* Display the command line switches accepted by gcc. */
2909 printf (_("Usage: %s [options] file...\n"), progname);
2910 fputs (_("Options:\n"), stdout);
2912 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
2913 fputs (_(" --help Display this information\n"), stdout);
2914 fputs (_(" --target-help Display target specific command line options\n"), stdout);
2915 fputs (_(" --help={target|optimizers|warnings|params|[^]{joined|separate|undocumented}}[,...]\n"), stdout);
2916 fputs (_(" Display specific types of command line options\n"), stdout);
2918 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
2919 fputs (_(" --version Display compiler version information\n"), stdout);
2920 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
2921 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
2922 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
2923 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
2924 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
2925 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
2926 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
2927 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
2929 -print-multi-lib Display the mapping between command line options and\n\
2930 multiple library search directories\n"), stdout);
2931 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
2932 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout);
2933 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout);
2934 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
2935 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
2936 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
2937 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
2938 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
2939 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
2940 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
2941 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout);
2943 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
2944 prefixes to other gcc components\n"), stdout);
2945 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
2946 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
2947 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
2948 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
2950 --sysroot=<directory> Use <directory> as the root directory for headers\n\
2951 and libraries\n"), stdout);
2952 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
2953 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
2954 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
2955 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
2956 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
2957 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
2958 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
2960 -x <language> Specify the language of the following input files\n\
2961 Permissible languages include: c c++ assembler none\n\
2962 'none' means revert to the default behavior of\n\
2963 guessing the language based on the file's extension\n\
2967 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
2968 passed on to the various sub-processes invoked by %s. In order to pass\n\
2969 other options on to these processes the -W<letter> options must be used.\n\
2972 /* The rest of the options are displayed by invocations of the various
2977 add_preprocessor_option (const char *option, int len)
2979 VEC_safe_push (char_p, heap, preprocessor_options,
2980 save_string (option, len));
2984 add_assembler_option (const char *option, int len)
2986 VEC_safe_push (char_p, heap, assembler_options, save_string (option, len));
2990 add_linker_option (const char *option, int len)
2992 VEC_safe_push (char_p, heap, linker_options, save_string (option, len));
2995 /* Allocate space for an input file in infiles. */
3000 if (n_infiles_alloc == 0)
3002 n_infiles_alloc = 16;
3003 infiles = XNEWVEC (struct infile, n_infiles_alloc);
3005 else if (n_infiles_alloc == n_infiles)
3007 n_infiles_alloc *= 2;
3008 infiles = XRESIZEVEC (struct infile, infiles, n_infiles_alloc);
3012 /* Store an input file with the given NAME and LANGUAGE in
3016 add_infile (const char *name, const char *language)
3019 infiles[n_infiles].name = name;
3020 infiles[n_infiles++].language = language;
3023 /* Allocate space for a switch in switches. */
3028 if (n_switches_alloc == 0)
3030 n_switches_alloc = 16;
3031 switches = XNEWVEC (struct switchstr, n_switches_alloc);
3033 else if (n_switches_alloc == n_switches)
3035 n_switches_alloc *= 2;
3036 switches = XRESIZEVEC (struct switchstr, switches, n_switches_alloc);
3040 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3041 as validated if VALIDATED. */
3044 save_switch (const char *opt, size_t n_args, const char *const *args,
3048 switches[n_switches].part1 = opt + 1;
3050 switches[n_switches].args = 0;
3053 switches[n_switches].args = XNEWVEC (const char *, n_args + 1);
3054 memcpy (switches[n_switches].args, args, n_args * sizeof (const char *));
3055 switches[n_switches].args[n_args] = NULL;
3058 switches[n_switches].live_cond = 0;
3059 switches[n_switches].validated = validated;
3060 switches[n_switches].ordering = 0;
3064 /* Handle an option DECODED that is unknown to the option-processing
3065 machinery, but may be known to specs. */
3068 driver_unknown_option_callback (const struct cl_decoded_option *decoded)
3070 save_switch (decoded->canonical_option[0],
3071 decoded->canonical_option_num_elements - 1,
3072 &decoded->canonical_option[1], false);
3077 /* Handle an option DECODED that is not marked as CL_DRIVER.
3078 LANG_MASK will always be CL_DRIVER. */
3081 driver_wrong_lang_callback (const struct cl_decoded_option *decoded,
3082 unsigned int lang_mask ATTRIBUTE_UNUSED)
3084 /* At this point, non-driver options are accepted (and expected to
3085 be passed down by specs) unless marked to be rejected by the
3086 driver. Options to be rejected by the driver but accepted by the
3087 compilers proper are treated just like completely unknown
3089 const struct cl_option *option = &cl_options[decoded->opt_index];
3091 if (option->flags & CL_REJECT_DRIVER)
3092 error ("unrecognized command line option %qs",
3093 decoded->orig_option_with_args_text);
3095 driver_unknown_option_callback (decoded);
3098 /* Note that an option (index OPT_INDEX, argument ARG, value VALUE)
3099 has been successfully handled with a handler for mask MASK. */
3102 driver_post_handling_callback (const struct cl_decoded_option *decoded ATTRIBUTE_UNUSED,
3103 unsigned int mask ATTRIBUTE_UNUSED)
3105 /* Nothing to do here. */
3108 static const char *spec_lang = 0;
3109 static int last_language_n_infiles;
3111 /* Handle a driver option; arguments and return value as for
3115 driver_handle_option (struct gcc_options *opts,
3116 struct gcc_options *opts_set,
3117 const struct cl_decoded_option *decoded,
3118 unsigned int lang_mask ATTRIBUTE_UNUSED, int kind,
3120 const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED,
3121 diagnostic_context *dc)
3123 size_t opt_index = decoded->opt_index;
3124 const char *arg = decoded->arg;
3125 const char *compare_debug_replacement_opt;
3126 int value = decoded->value;
3127 bool validated = false;
3128 bool do_save = true;
3130 gcc_assert (opts == &global_options);
3131 gcc_assert (opts_set == &global_options_set);
3132 gcc_assert (kind == DK_UNSPECIFIED);
3133 gcc_assert (loc == UNKNOWN_LOCATION);
3134 gcc_assert (dc == global_dc);
3140 struct spec_list *sl;
3142 for (sl = specs; sl; sl = sl->next)
3143 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3144 if (link_command_spec)
3145 printf ("*link_command:\n%s\n\n", link_command_spec);
3149 case OPT_dumpversion:
3150 printf ("%s\n", spec_version);
3153 case OPT_dumpmachine:
3154 printf ("%s\n", spec_machine);
3160 /* CPP driver cannot obtain switch from cc1_options. */
3162 add_preprocessor_option ("--version", strlen ("--version"));
3163 add_assembler_option ("--version", strlen ("--version"));
3164 add_linker_option ("--version", strlen ("--version"));
3168 print_help_list = 1;
3170 /* CPP driver cannot obtain switch from cc1_options. */
3172 add_preprocessor_option ("--help", 6);
3173 add_assembler_option ("--help", 6);
3174 add_linker_option ("--help", 6);
3178 print_subprocess_help = 2;
3181 case OPT__target_help:
3182 print_subprocess_help = 1;
3184 /* CPP driver cannot obtain switch from cc1_options. */
3186 add_preprocessor_option ("--target-help", 13);
3187 add_assembler_option ("--target-help", 13);
3188 add_linker_option ("--target-help", 13);
3191 case OPT_pass_exit_codes:
3192 case OPT_print_search_dirs:
3193 case OPT_print_file_name_:
3194 case OPT_print_prog_name_:
3195 case OPT_print_multi_lib:
3196 case OPT_print_multi_directory:
3197 case OPT_print_sysroot:
3198 case OPT_print_multi_os_directory:
3199 case OPT_print_sysroot_headers_suffix:
3202 /* These options set the variables specified in common.opt
3203 automatically, and do not need to be saved for spec
3208 case OPT_print_libgcc_file_name:
3209 print_file_name = "libgcc.a";
3213 case OPT_fcompare_debug_second:
3214 compare_debug_second = 1;
3217 case OPT_fcompare_debug:
3221 compare_debug_replacement_opt = "-fcompare-debug=";
3223 goto compare_debug_with_arg;
3226 compare_debug_replacement_opt = "-fcompare-debug=-gtoggle";
3228 goto compare_debug_with_arg;
3235 case OPT_fcompare_debug_:
3236 compare_debug_replacement_opt = decoded->canonical_option[0];
3237 compare_debug_with_arg:
3238 gcc_assert (decoded->canonical_option_num_elements == 1);
3239 gcc_assert (arg != NULL);
3244 if (compare_debug < 0)
3245 compare_debug_opt = NULL;
3247 compare_debug_opt = arg;
3248 save_switch (compare_debug_replacement_opt, 0, NULL, validated);
3254 /* Pass the rest of this option to the assembler. */
3256 /* Split the argument at commas. */
3258 for (j = 0; arg[j]; j++)
3261 add_assembler_option (arg + prev, j - prev);
3265 /* Record the part after the last comma. */
3266 add_assembler_option (arg + prev, j - prev);
3274 /* Pass the rest of this option to the preprocessor. */
3276 /* Split the argument at commas. */
3278 for (j = 0; arg[j]; j++)
3281 add_preprocessor_option (arg + prev, j - prev);
3285 /* Record the part after the last comma. */
3286 add_preprocessor_option (arg + prev, j - prev);
3294 /* Split the argument at commas. */
3296 for (j = 0; arg[j]; j++)
3299 add_infile (save_string (arg + prev, j - prev), "*");
3302 /* Record the part after the last comma. */
3303 add_infile (arg + prev, "*");
3309 add_infile (arg, "*");
3313 case OPT_Xpreprocessor:
3314 add_preprocessor_option (arg, strlen (arg));
3318 case OPT_Xassembler:
3319 add_assembler_option (arg, strlen (arg));
3324 /* POSIX allows separation of -l and the lib arg; canonicalize
3325 by concatenating -l with its arg */
3326 add_infile (concat ("-l", arg, NULL), "*");
3331 /* Similarly, canonicalize -L for linkers that may not accept
3332 separate arguments. */
3333 save_switch (concat ("-L", arg, NULL), 0, NULL, validated);
3336 case OPT_save_temps:
3337 save_temps_flag = SAVE_TEMPS_CWD;
3341 case OPT_save_temps_:
3342 if (strcmp (arg, "cwd") == 0)
3343 save_temps_flag = SAVE_TEMPS_CWD;
3344 else if (strcmp (arg, "obj") == 0
3345 || strcmp (arg, "object") == 0)
3346 save_temps_flag = SAVE_TEMPS_OBJ;
3348 fatal_error ("%qs is an unknown -save-temps option",
3349 decoded->orig_option_with_args_text);
3352 case OPT_no_canonical_prefixes:
3353 /* Already handled as a special case, so ignored here. */
3359 /* These options set the variables specified in common.opt
3360 automatically, but do need to be saved for spec
3366 struct user_specs *user = XNEW (struct user_specs);
3368 user->next = (struct user_specs *) 0;
3369 user->filename = arg;
3370 if (user_specs_tail)
3371 user_specs_tail->next = user;
3373 user_specs_head = user;
3374 user_specs_tail = user;
3380 target_system_root = arg;
3381 target_system_root_changed = 1;
3386 if (report_times_to_file)
3387 fclose (report_times_to_file);
3388 report_times_to_file = fopen (arg, "a");
3394 This is similar to -v except that there is no execution
3395 of the commands and the echoed arguments are quoted. It
3396 is intended for use in shell scripts to capture the
3397 driver-generated command line. */
3398 verbose_only_flag++;
3405 size_t len = strlen (arg);
3407 /* Catch the case where the user has forgotten to append a
3408 directory separator to the path. Note, they may be using
3409 -B to add an executable name prefix, eg "i386-elf-", in
3410 order to distinguish between multiple installations of
3411 GCC in the same directory. Hence we must check to see
3412 if appending a directory separator actually makes a
3413 valid directory name. */
3414 if (!IS_DIR_SEPARATOR (arg[len - 1])
3415 && is_directory (arg, false))
3417 char *tmp = XNEWVEC (char, len + 2);
3419 tmp[len] = DIR_SEPARATOR;
3424 add_prefix (&exec_prefixes, arg, NULL,
3425 PREFIX_PRIORITY_B_OPT, 0, 0);
3426 add_prefix (&startfile_prefixes, arg, NULL,
3427 PREFIX_PRIORITY_B_OPT, 0, 0);
3428 add_prefix (&include_prefixes, arg, NULL,
3429 PREFIX_PRIORITY_B_OPT, 0, 0);
3436 if (!strcmp (spec_lang, "none"))
3437 /* Suppress the warning if -xnone comes after the last input
3438 file, because alternate command interfaces like g++ might
3439 find it useful to place -xnone after each input file. */
3442 last_language_n_infiles = n_infiles;
3448 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3449 arg = convert_filename (arg, ! have_c, 0);
3451 /* Save the output name in case -save-temps=obj was used. */
3452 save_temps_prefix = xstrdup (arg);
3453 /* On some systems, ld cannot handle "-o" without a space. So
3454 split the option from its argument. */
3455 save_switch ("-o", 1, &arg, validated);
3458 case OPT_static_libgcc:
3459 case OPT_shared_libgcc:
3460 case OPT_static_libgfortran:
3461 case OPT_static_libstdc__:
3462 /* These are always valid, since gcc.c itself understands the
3463 first two, gfortranspec.c understands -static-libgfortran and
3464 g++spec.c understands -static-libstdc++ */
3469 /* Various driver options need no special processing at this
3470 point, having been handled in a prescan above or being
3471 handled by specs. */
3476 save_switch (decoded->canonical_option[0],
3477 decoded->canonical_option_num_elements - 1,
3478 &decoded->canonical_option[1], validated);
3482 /* Put the driver's standard set of option handlers in *HANDLERS. */
3485 set_option_handlers (struct cl_option_handlers *handlers)
3487 handlers->unknown_option_callback = driver_unknown_option_callback;
3488 handlers->wrong_lang_callback = driver_wrong_lang_callback;
3489 handlers->post_handling_callback = driver_post_handling_callback;
3490 handlers->num_handlers = 1;
3491 handlers->handlers[0].handler = driver_handle_option;
3492 handlers->handlers[0].mask = CL_DRIVER;
3495 /* Create the vector `switches' and its contents.
3496 Store its length in `n_switches'. */
3499 process_command (unsigned int decoded_options_count,
3500 struct cl_decoded_option *decoded_options)
3504 const char *tooldir_prefix;
3505 char *(*get_relative_prefix) (const char *, const char *,
3506 const char *) = NULL;
3507 struct cl_option_handlers handlers;
3510 GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3514 added_libraries = 0;
3516 /* Figure compiler version from version string. */
3518 compiler_version = temp1 = xstrdup (version_string);
3520 for (; *temp1; ++temp1)
3529 /* Handle any -no-canonical-prefixes flag early, to assign the function
3530 that builds relative prefixes. This function creates default search
3531 paths that are needed later in normal option handling. */
3533 for (j = 1; j < decoded_options_count; j++)
3535 if (decoded_options[j].opt_index == OPT_no_canonical_prefixes)
3537 get_relative_prefix = make_relative_prefix_ignore_links;
3541 if (! get_relative_prefix)
3542 get_relative_prefix = make_relative_prefix;
3544 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3545 see if we can create it from the pathname specified in
3546 decoded_options[0].arg. */
3548 gcc_libexec_prefix = standard_libexec_prefix;
3550 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3551 if (!gcc_exec_prefix)
3553 gcc_exec_prefix = get_relative_prefix (decoded_options[0].arg,
3554 standard_bindir_prefix,
3555 standard_exec_prefix);
3556 gcc_libexec_prefix = get_relative_prefix (decoded_options[0].arg,
3557 standard_bindir_prefix,
3558 standard_libexec_prefix);
3559 if (gcc_exec_prefix)
3560 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3564 /* make_relative_prefix requires a program name, but
3565 GCC_EXEC_PREFIX is typically a directory name with a trailing
3566 / (which is ignored by make_relative_prefix), so append a
3568 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL);
3569 gcc_libexec_prefix = get_relative_prefix (tmp_prefix,
3570 standard_exec_prefix,
3571 standard_libexec_prefix);
3573 /* The path is unrelocated, so fallback to the original setting. */
3574 if (!gcc_libexec_prefix)
3575 gcc_libexec_prefix = standard_libexec_prefix;
3581 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3582 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3583 or an automatically created GCC_EXEC_PREFIX from
3584 decoded_options[0].arg. */
3586 /* Do language-specific adjustment/addition of flags. */
3587 lang_specific_driver (&decoded_options, &decoded_options_count,
3590 if (gcc_exec_prefix)
3592 int len = strlen (gcc_exec_prefix);
3594 if (len > (int) sizeof ("/lib/gcc/") - 1
3595 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3597 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3598 if (IS_DIR_SEPARATOR (*temp)
3599 && strncmp (temp + 1, "lib", 3) == 0
3600 && IS_DIR_SEPARATOR (temp[4])
3601 && strncmp (temp + 5, "gcc", 3) == 0)
3602 len -= sizeof ("/lib/gcc/") - 1;
3605 set_std_prefix (gcc_exec_prefix, len);
3606 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3607 PREFIX_PRIORITY_LAST, 0, 0);
3608 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3609 PREFIX_PRIORITY_LAST, 0, 0);
3612 /* COMPILER_PATH and LIBRARY_PATH have values
3613 that are lists of directory names with colons. */
3615 GET_ENVIRONMENT (temp, "COMPILER_PATH");
3618 const char *startp, *endp;
3619 char *nstore = (char *) alloca (strlen (temp) + 3);
3621 startp = endp = temp;
3624 if (*endp == PATH_SEPARATOR || *endp == 0)
3626 strncpy (nstore, startp, endp - startp);
3628 strcpy (nstore, concat (".", dir_separator_str, NULL));
3629 else if (!IS_DIR_SEPARATOR (endp[-1]))
3631 nstore[endp - startp] = DIR_SEPARATOR;
3632 nstore[endp - startp + 1] = 0;
3635 nstore[endp - startp] = 0;
3636 add_prefix (&exec_prefixes, nstore, 0,
3637 PREFIX_PRIORITY_LAST, 0, 0);
3638 add_prefix (&include_prefixes, nstore, 0,
3639 PREFIX_PRIORITY_LAST, 0, 0);
3642 endp = startp = endp + 1;
3649 GET_ENVIRONMENT (temp, LIBRARY_PATH_ENV);
3650 if (temp && *cross_compile == '0')
3652 const char *startp, *endp;
3653 char *nstore = (char *) alloca (strlen (temp) + 3);
3655 startp = endp = temp;
3658 if (*endp == PATH_SEPARATOR || *endp == 0)
3660 strncpy (nstore, startp, endp - startp);
3662 strcpy (nstore, concat (".", dir_separator_str, NULL));
3663 else if (!IS_DIR_SEPARATOR (endp[-1]))
3665 nstore[endp - startp] = DIR_SEPARATOR;
3666 nstore[endp - startp + 1] = 0;
3669 nstore[endp - startp] = 0;
3670 add_prefix (&startfile_prefixes, nstore, NULL,
3671 PREFIX_PRIORITY_LAST, 0, 1);
3674 endp = startp = endp + 1;
3681 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3682 GET_ENVIRONMENT (temp, "LPATH");
3683 if (temp && *cross_compile == '0')
3685 const char *startp, *endp;
3686 char *nstore = (char *) alloca (strlen (temp) + 3);
3688 startp = endp = temp;
3691 if (*endp == PATH_SEPARATOR || *endp == 0)
3693 strncpy (nstore, startp, endp - startp);
3695 strcpy (nstore, concat (".", dir_separator_str, NULL));
3696 else if (!IS_DIR_SEPARATOR (endp[-1]))
3698 nstore[endp - startp] = DIR_SEPARATOR;
3699 nstore[endp - startp + 1] = 0;
3702 nstore[endp - startp] = 0;
3703 add_prefix (&startfile_prefixes, nstore, NULL,
3704 PREFIX_PRIORITY_LAST, 0, 1);
3707 endp = startp = endp + 1;
3714 /* Process the options and store input files and switches in their
3717 last_language_n_infiles = -1;
3719 set_option_handlers (&handlers);
3721 for (j = 1; j < decoded_options_count; j++)
3723 switch (decoded_options[j].opt_index)
3735 for (j = 1; j < decoded_options_count; j++)
3737 if (decoded_options[j].opt_index == OPT_SPECIAL_input_file)
3739 const char *arg = decoded_options[j].arg;
3740 const char *p = strrchr (arg, '@');
3744 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3745 arg = convert_filename (arg, 0, access (arg, F_OK));
3747 /* For LTO static archive support we handle input file
3748 specifications that are composed of a filename and
3749 an offset like FNAME@OFFSET. */
3752 && sscanf (p, "@%li%n", &offset, &consumed) >= 1
3753 && strlen (p) == (unsigned int)consumed)
3755 fname = (char *)xmalloc (p - arg + 1);
3756 memcpy (fname, arg, p - arg);
3757 fname[p - arg] = '\0';
3758 /* Only accept non-stdin and existing FNAME parts, otherwise
3759 try with the full name. */
3760 if (strcmp (fname, "-") == 0 || access (fname, F_OK) < 0)
3763 fname = xstrdup (arg);
3767 fname = xstrdup (arg);
3769 if (strcmp (fname, "-") != 0 && access (fname, F_OK) < 0)
3770 perror_with_name (fname);
3772 add_infile (arg, spec_lang);
3778 read_cmdline_option (&global_options, &global_options_set,
3779 decoded_options + j, UNKNOWN_LOCATION,
3780 CL_DRIVER, &handlers, global_dc);
3783 /* If -save-temps=obj and -o name, create the prefix to use for %b.
3784 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
3785 if (save_temps_flag == SAVE_TEMPS_OBJ && save_temps_prefix != NULL)
3787 save_temps_length = strlen (save_temps_prefix);
3788 temp = strrchr (lbasename (save_temps_prefix), '.');
3791 save_temps_length -= strlen (temp);
3792 save_temps_prefix[save_temps_length] = '\0';
3796 else if (save_temps_prefix != NULL)
3798 free (save_temps_prefix);
3799 save_temps_prefix = NULL;
3802 if (save_temps_flag && use_pipes)
3804 /* -save-temps overrides -pipe, so that temp files are produced */
3805 if (save_temps_flag)
3806 warning (0, "-pipe ignored because -save-temps specified");
3812 const char *gcd = getenv ("GCC_COMPARE_DEBUG");
3814 if (gcd && gcd[0] == '-')
3817 compare_debug_opt = gcd;
3819 else if (gcd && *gcd && strcmp (gcd, "0"))
3822 compare_debug_opt = "-gtoggle";
3825 else if (compare_debug < 0)
3828 gcc_assert (!compare_debug_opt);
3831 /* Set up the search paths. We add directories that we expect to
3832 contain GNU Toolchain components before directories specified by
3833 the machine description so that we will find GNU components (like
3834 the GNU assembler) before those of the host system. */
3836 /* If we don't know where the toolchain has been installed, use the
3837 configured-in locations. */
3838 if (!gcc_exec_prefix)
3841 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
3842 PREFIX_PRIORITY_LAST, 1, 0);
3843 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
3844 PREFIX_PRIORITY_LAST, 2, 0);
3845 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3846 PREFIX_PRIORITY_LAST, 2, 0);
3848 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3849 PREFIX_PRIORITY_LAST, 1, 0);
3852 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix));
3853 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3854 dir_separator_str, NULL);
3856 /* Look for tools relative to the location from which the driver is
3857 running, or, if that is not available, the configured prefix. */
3859 = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
3860 spec_machine, dir_separator_str,
3861 spec_version, dir_separator_str, tooldir_prefix, NULL);
3863 add_prefix (&exec_prefixes,
3864 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3865 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0);
3866 add_prefix (&startfile_prefixes,
3867 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3868 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1);
3870 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
3871 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
3872 then consider it to relocate with the rest of the GCC installation
3873 if GCC_EXEC_PREFIX is set.
3874 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
3875 if (target_system_root && !target_system_root_changed && gcc_exec_prefix)
3877 char *tmp_prefix = get_relative_prefix (decoded_options[0].arg,
3878 standard_bindir_prefix,
3879 target_system_root);
3880 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
3882 target_system_root = tmp_prefix;
3883 target_system_root_changed = 1;
3888 /* More prefixes are enabled in main, after we read the specs file
3889 and determine whether this is cross-compilation or not. */
3891 if (n_infiles == last_language_n_infiles && spec_lang != 0)
3892 warning (0, "%<-x %s%> after last input file has no effect", spec_lang);
3894 if (compare_debug == 2 || compare_debug == 3)
3897 switches[n_switches].part1 = concat ("fcompare-debug=",
3900 switches[n_switches].args = 0;
3901 switches[n_switches].live_cond = 0;
3902 switches[n_switches].validated = 0;
3903 switches[n_switches].ordering = 0;
3908 /* Ensure we only invoke each subprocess once. */
3909 if (print_subprocess_help || print_help_list || print_version)
3913 /* Create a dummy input file, so that we can pass
3914 the help option on to the various sub-processes. */
3915 add_infile ("help-dummy", "c");
3919 switches[n_switches].part1 = 0;
3921 infiles[n_infiles].name = 0;
3924 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
3925 and place that in the environment. */
3928 set_collect_gcc_options (void)
3933 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
3935 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
3936 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
3939 for (i = 0; (int) i < n_switches; i++)
3941 const char *const *args;
3944 obstack_grow (&collect_obstack, " ", 1);
3948 /* Ignore elided switches. */
3949 if ((switches[i].live_cond & SWITCH_IGNORE) != 0)
3952 obstack_grow (&collect_obstack, "'-", 2);
3953 q = switches[i].part1;
3954 while ((p = strchr (q, '\'')))
3956 obstack_grow (&collect_obstack, q, p - q);
3957 obstack_grow (&collect_obstack, "'\\''", 4);
3960 obstack_grow (&collect_obstack, q, strlen (q));
3961 obstack_grow (&collect_obstack, "'", 1);
3963 for (args = switches[i].args; args && *args; args++)
3965 obstack_grow (&collect_obstack, " '", 2);
3967 while ((p = strchr (q, '\'')))
3969 obstack_grow (&collect_obstack, q, p - q);
3970 obstack_grow (&collect_obstack, "'\\''", 4);
3973 obstack_grow (&collect_obstack, q, strlen (q));
3974 obstack_grow (&collect_obstack, "'", 1);
3977 obstack_grow (&collect_obstack, "\0", 1);
3978 xputenv (XOBFINISH (&collect_obstack, char *));
3981 /* Process a spec string, accumulating and running commands. */
3983 /* These variables describe the input file name.
3984 input_file_number is the index on outfiles of this file,
3985 so that the output file name can be stored for later use by %o.
3986 input_basename is the start of the part of the input file
3987 sans all directory names, and basename_length is the number
3988 of characters starting there excluding the suffix .c or whatever. */
3990 static const char *gcc_input_filename;
3991 static int input_file_number;
3992 size_t input_filename_length;
3993 static int basename_length;
3994 static int suffixed_basename_length;
3995 static const char *input_basename;
3996 static const char *input_suffix;
3997 #ifndef HOST_LACKS_INODE_NUMBERS
3998 static struct stat input_stat;
4000 static int input_stat_set;
4002 /* The compiler used to process the current input file. */
4003 static struct compiler *input_file_compiler;
4005 /* These are variables used within do_spec and do_spec_1. */
4007 /* Nonzero if an arg has been started and not yet terminated
4008 (with space, tab or newline). */
4009 static int arg_going;
4011 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4012 is a temporary file name. */
4013 static int delete_this_arg;
4015 /* Nonzero means %w has been seen; the next arg to be terminated
4016 is the output file name of this compilation. */
4017 static int this_is_output_file;
4019 /* Nonzero means %s has been seen; the next arg to be terminated
4020 is the name of a library file and we should try the standard
4021 search dirs for it. */
4022 static int this_is_library_file;
4024 /* Nonzero means %T has been seen; the next arg to be terminated
4025 is the name of a linker script and we should try all of the
4026 standard search dirs for it. If it is found insert a --script
4027 command line switch and then substitute the full path in place,
4028 otherwise generate an error message. */
4029 static int this_is_linker_script;
4031 /* Nonzero means that the input of this command is coming from a pipe. */
4032 static int input_from_pipe;
4034 /* Nonnull means substitute this for any suffix when outputting a switches
4036 static const char *suffix_subst;
4038 /* If there is an argument being accumulated, terminate it and store it. */
4041 end_going_arg (void)
4047 obstack_1grow (&obstack, 0);
4048 string = XOBFINISH (&obstack, const char *);
4049 if (this_is_library_file)
4050 string = find_file (string);
4051 if (this_is_linker_script)
4053 char * full_script_path = find_a_file (&startfile_prefixes, string, R_OK, true);
4055 if (full_script_path == NULL)
4057 error ("unable to locate default linker script %qs in the library search paths", string);
4058 /* Script was not found on search path. */
4061 store_arg ("--script", false, false);
4062 string = full_script_path;
4064 store_arg (string, delete_this_arg, this_is_output_file);
4065 if (this_is_output_file)
4066 outfiles[input_file_number] = string;
4072 /* Parse the WRAPPER string which is a comma separated list of the command line
4073 and insert them into the beginning of argbuf. */
4076 insert_wrapper (const char *wrapper)
4080 char *buf = xstrdup (wrapper);
4082 unsigned int old_length = VEC_length (const_char_p, argbuf);
4090 while ((p = strchr (p, ',')) != NULL);
4092 VEC_safe_grow (const_char_p, heap, argbuf, old_length + n);
4093 memmove (VEC_address (const_char_p, argbuf) + n,
4094 VEC_address (const_char_p, argbuf),
4095 old_length * sizeof (const_char_p));
4106 VEC_replace (const_char_p, argbuf, i, p);
4109 while ((p = strchr (p, ',')) != NULL);
4110 gcc_assert (i == n);
4113 /* Process the spec SPEC and run the commands specified therein.
4114 Returns 0 if the spec is successfully processed; -1 if failed. */
4117 do_spec (const char *spec)
4121 value = do_spec_2 (spec);
4123 /* Force out any unfinished command.
4124 If -pipe, this forces out the last command if it ended in `|'. */
4127 if (VEC_length (const_char_p, argbuf) > 0
4128 && !strcmp (VEC_last (const_char_p, argbuf), "|"))
4129 VEC_pop (const_char_p, argbuf);
4131 set_collect_gcc_options ();
4133 if (VEC_length (const_char_p, argbuf) > 0)
4141 do_spec_2 (const char *spec)
4147 delete_this_arg = 0;
4148 this_is_output_file = 0;
4149 this_is_library_file = 0;
4150 this_is_linker_script = 0;
4151 input_from_pipe = 0;
4152 suffix_subst = NULL;
4154 result = do_spec_1 (spec, 0, NULL);
4162 /* Process the given spec string and add any new options to the end
4163 of the switches/n_switches array. */
4166 do_option_spec (const char *name, const char *spec)
4168 unsigned int i, value_count, value_len;
4169 const char *p, *q, *value;
4170 char *tmp_spec, *tmp_spec_p;
4172 if (configure_default_options[0].name == NULL)
4175 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4176 if (strcmp (configure_default_options[i].name, name) == 0)
4178 if (i == ARRAY_SIZE (configure_default_options))
4181 value = configure_default_options[i].value;
4182 value_len = strlen (value);
4184 /* Compute the size of the final spec. */
4187 while ((p = strstr (p, "%(VALUE)")) != NULL)
4193 /* Replace each %(VALUE) by the specified value. */
4194 tmp_spec = (char *) alloca (strlen (spec) + 1
4195 + value_count * (value_len - strlen ("%(VALUE)")));
4196 tmp_spec_p = tmp_spec;
4198 while ((p = strstr (q, "%(VALUE)")) != NULL)
4200 memcpy (tmp_spec_p, q, p - q);
4201 tmp_spec_p = tmp_spec_p + (p - q);
4202 memcpy (tmp_spec_p, value, value_len);
4203 tmp_spec_p += value_len;
4204 q = p + strlen ("%(VALUE)");
4206 strcpy (tmp_spec_p, q);
4208 do_self_spec (tmp_spec);
4211 /* Process the given spec string and add any new options to the end
4212 of the switches/n_switches array. */
4215 do_self_spec (const char *spec)
4220 do_spec_1 (" ", 0, NULL);
4222 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4223 do_self_specs adds the replacements to switches array, so it shouldn't
4224 be processed afterwards. */
4225 for (i = 0; i < n_switches; i++)
4226 if ((switches[i].live_cond & SWITCH_IGNORE))
4227 switches[i].live_cond |= SWITCH_IGNORE_PERMANENTLY;
4229 if (VEC_length (const_char_p, argbuf) > 0)
4231 const char **argbuf_copy;
4232 struct cl_decoded_option *decoded_options;
4233 struct cl_option_handlers handlers;
4234 unsigned int decoded_options_count;
4237 /* Create a copy of argbuf with a dummy argv[0] entry for
4238 decode_cmdline_options_to_array. */
4239 argbuf_copy = XNEWVEC (const char *,
4240 VEC_length (const_char_p, argbuf) + 1);
4241 argbuf_copy[0] = "";
4242 memcpy (argbuf_copy + 1, VEC_address (const_char_p, argbuf),
4243 VEC_length (const_char_p, argbuf) * sizeof (const char *));
4245 decode_cmdline_options_to_array (VEC_length (const_char_p, argbuf) + 1,
4247 CL_DRIVER, &decoded_options,
4248 &decoded_options_count);
4250 set_option_handlers (&handlers);
4252 for (j = 1; j < decoded_options_count; j++)
4254 switch (decoded_options[j].opt_index)
4256 case OPT_SPECIAL_input_file:
4257 /* Specs should only generate options, not input
4259 if (strcmp (decoded_options[j].arg, "-") != 0)
4260 fatal_error ("switch %qs does not start with %<-%>",
4261 decoded_options[j].arg);
4263 fatal_error ("spec-generated switch is just %<-%>");
4266 case OPT_fcompare_debug_second:
4267 case OPT_fcompare_debug:
4268 case OPT_fcompare_debug_:
4270 /* Avoid duplicate processing of some options from
4271 compare-debug specs; just save them here. */
4272 save_switch (decoded_options[j].canonical_option[0],
4273 (decoded_options[j].canonical_option_num_elements
4275 &decoded_options[j].canonical_option[1], false);
4279 read_cmdline_option (&global_options, &global_options_set,
4280 decoded_options + j, UNKNOWN_LOCATION,
4281 CL_DRIVER, &handlers, global_dc);
4287 switches[n_switches].part1 = 0;
4291 /* Callback for processing %D and %I specs. */
4293 struct spec_path_info {
4298 bool separate_options;
4302 spec_path (char *path, void *data)
4304 struct spec_path_info *info = (struct spec_path_info *) data;
4308 if (info->omit_relative && !IS_ABSOLUTE_PATH (path))
4311 if (info->append_len != 0)
4313 len = strlen (path);
4314 memcpy (path + len, info->append, info->append_len + 1);
4317 if (!is_directory (path, true))
4320 do_spec_1 (info->option, 1, NULL);
4321 if (info->separate_options)
4322 do_spec_1 (" ", 0, NULL);
4324 if (info->append_len == 0)
4326 len = strlen (path);
4327 save = path[len - 1];
4328 if (IS_DIR_SEPARATOR (path[len - 1]))
4329 path[len - 1] = '\0';
4332 do_spec_1 (path, 1, NULL);
4333 do_spec_1 (" ", 0, NULL);
4335 /* Must not damage the original path. */
4336 if (info->append_len == 0)
4337 path[len - 1] = save;
4342 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4346 create_at_file (char **argv)
4348 char *temp_file = make_temp_file ("");
4349 char *at_argument = concat ("@", temp_file, NULL);
4350 FILE *f = fopen (temp_file, "w");
4354 fatal_error ("could not open temporary response file %s",
4357 status = writeargv (argv, f);
4360 fatal_error ("could not write to temporary response file %s",
4363 status = fclose (f);
4366 fatal_error ("could not close temporary response file %s",
4369 store_arg (at_argument, 0, 0);
4371 record_temp_file (temp_file, !save_temps_flag, !save_temps_flag);
4374 /* True if we should compile INFILE. */
4377 compile_input_file_p (struct infile *infile)
4379 if ((!infile->language) || (infile->language[0] != '*'))
4380 if (infile->incompiler == input_file_compiler)
4385 /* Process each member of VEC as a spec. */
4388 do_specs_vec (VEC(char_p,heap) *vec)
4393 FOR_EACH_VEC_ELT (char_p, vec, ix, opt)
4395 do_spec_1 (opt, 1, NULL);
4396 /* Make each accumulated option a separate argument. */
4397 do_spec_1 (" ", 0, NULL);
4401 /* Process the sub-spec SPEC as a portion of a larger spec.
4402 This is like processing a whole spec except that we do
4403 not initialize at the beginning and we do not supply a
4404 newline by default at the end.
4405 INSWITCH nonzero means don't process %-sequences in SPEC;
4406 in this case, % is treated as an ordinary character.
4407 This is used while substituting switches.
4408 INSWITCH nonzero also causes SPC not to terminate an argument.
4410 Value is zero unless a line was finished
4411 and the command on that line reported an error. */
4414 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4416 const char *p = spec;
4422 /* If substituting a switch, treat all chars like letters.
4423 Otherwise, NL, SPC, TAB and % are special. */
4424 switch (inswitch ? 'a' : c)
4429 if (VEC_length (const_char_p, argbuf) > 0
4430 && !strcmp (VEC_last (const_char_p, argbuf), "|"))
4432 /* A `|' before the newline means use a pipe here,
4433 but only if -pipe was specified.
4434 Otherwise, execute now and don't pass the `|' as an arg. */
4437 input_from_pipe = 1;
4441 VEC_pop (const_char_p, argbuf);
4444 set_collect_gcc_options ();
4446 if (VEC_length (const_char_p, argbuf) > 0)
4452 /* Reinitialize for a new command, and for a new argument. */
4455 delete_this_arg = 0;
4456 this_is_output_file = 0;
4457 this_is_library_file = 0;
4458 this_is_linker_script = 0;
4459 input_from_pipe = 0;
4466 obstack_1grow (&obstack, c);
4474 /* Reinitialize for a new argument. */
4475 delete_this_arg = 0;
4476 this_is_output_file = 0;
4477 this_is_library_file = 0;
4478 this_is_linker_script = 0;
4485 fatal_error ("spec %qs invalid", spec);
4488 if (save_temps_length)
4489 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4491 obstack_grow (&obstack, input_basename, basename_length);
4492 if (compare_debug < 0)
4493 obstack_grow (&obstack, ".gk", 3);
4498 if (save_temps_length)
4499 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4501 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4502 if (compare_debug < 0)
4503 obstack_grow (&obstack, ".gk", 3);
4508 delete_this_arg = 2;
4511 /* Dump out the directories specified with LIBRARY_PATH,
4512 followed by the absolute directories
4513 that we search for startfiles. */
4516 struct spec_path_info info;
4519 info.append_len = 0;
4520 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4521 /* Used on systems which record the specified -L dirs
4522 and use them to search for dynamic linking.
4523 Relative directories always come from -B,
4524 and it is better not to use them for searching
4525 at run time. In particular, stage1 loses. */
4526 info.omit_relative = true;
4528 info.omit_relative = false;
4530 info.separate_options = false;
4532 for_each_path (&startfile_prefixes, true, 0, spec_path, &info);
4537 /* %efoo means report an error with `foo' as error message
4538 and don't execute any more commands for this file. */
4542 while (*p != 0 && *p != '\n')
4544 buf = (char *) alloca (p - q + 1);
4545 strncpy (buf, q, p - q);
4547 error ("%s", _(buf));
4552 /* %nfoo means report a notice with `foo' on stderr. */
4556 while (*p != 0 && *p != '\n')
4558 buf = (char *) alloca (p - q + 1);
4559 strncpy (buf, q, p - q);
4561 inform (0, "%s", _(buf));
4571 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4572 defined, and it is not a directory, and it is
4573 writable, use it. Otherwise, treat this like any
4574 other temporary file. */
4576 if ((!save_temps_flag)
4577 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4578 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4580 obstack_grow (&obstack, HOST_BIT_BUCKET,
4581 strlen (HOST_BIT_BUCKET));
4582 delete_this_arg = 0;
4587 goto create_temp_file;
4591 obstack_1grow (&obstack, '-');
4592 delete_this_arg = 0;
4595 /* consume suffix */
4596 while (*p == '.' || ISALNUM ((unsigned char) *p))
4598 if (p[0] == '%' && p[1] == 'O')
4603 goto create_temp_file;
4607 /* consume suffix */
4608 while (*p == '.' || ISALNUM ((unsigned char) *p))
4610 if (p[0] == '%' && p[1] == 'O')
4615 goto create_temp_file;
4621 struct temp_name *t;
4623 const char *suffix = p;
4624 char *saved_suffix = NULL;
4626 while (*p == '.' || ISALNUM ((unsigned char) *p))
4628 suffix_length = p - suffix;
4629 if (p[0] == '%' && p[1] == 'O')
4632 /* We don't support extra suffix characters after %O. */
4633 if (*p == '.' || ISALNUM ((unsigned char) *p))
4634 fatal_error ("spec %qs has invalid %<%%0%c%>", spec, *p);
4635 if (suffix_length == 0)
4636 suffix = TARGET_OBJECT_SUFFIX;
4640 = XNEWVEC (char, suffix_length
4641 + strlen (TARGET_OBJECT_SUFFIX));
4642 strncpy (saved_suffix, suffix, suffix_length);
4643 strcpy (saved_suffix + suffix_length,
4644 TARGET_OBJECT_SUFFIX);
4646 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4649 if (compare_debug < 0)
4651 suffix = concat (".gk", suffix, NULL);
4655 /* If -save-temps=obj and -o were specified, use that for the
4657 if (save_temps_length)
4660 temp_filename_length
4661 = save_temps_length + suffix_length + 1;
4662 tmp = (char *) alloca (temp_filename_length);
4663 memcpy (tmp, save_temps_prefix, save_temps_length);
4664 memcpy (tmp + save_temps_length, suffix, suffix_length);
4665 tmp[save_temps_length + suffix_length] = '\0';
4666 temp_filename = save_string (tmp,
4667 temp_filename_length + 1);
4668 obstack_grow (&obstack, temp_filename,
4669 temp_filename_length);
4671 delete_this_arg = 0;
4675 /* If the gcc_input_filename has the same suffix specified
4676 for the %g, %u, or %U, and -save-temps is specified,
4677 we could end up using that file as an intermediate
4678 thus clobbering the user's source file (.e.g.,
4679 gcc -save-temps foo.s would clobber foo.s with the
4680 output of cpp0). So check for this condition and
4681 generate a temp file as the intermediate. */
4683 if (save_temps_flag)
4686 temp_filename_length = basename_length + suffix_length + 1;
4687 tmp = (char *) alloca (temp_filename_length);
4688 memcpy (tmp, input_basename, basename_length);
4689 memcpy (tmp + basename_length, suffix, suffix_length);
4690 tmp[basename_length + suffix_length] = '\0';
4691 temp_filename = tmp;
4693 if (strcmp (temp_filename, gcc_input_filename) != 0)
4695 #ifndef HOST_LACKS_INODE_NUMBERS
4696 struct stat st_temp;
4698 /* Note, set_input() resets input_stat_set to 0. */
4699 if (input_stat_set == 0)
4701 input_stat_set = stat (gcc_input_filename,
4703 if (input_stat_set >= 0)
4707 /* If we have the stat for the gcc_input_filename
4708 and we can do the stat for the temp_filename
4709 then the they could still refer to the same
4710 file if st_dev/st_ino's are the same. */
4711 if (input_stat_set != 1
4712 || stat (temp_filename, &st_temp) < 0
4713 || input_stat.st_dev != st_temp.st_dev
4714 || input_stat.st_ino != st_temp.st_ino)
4716 /* Just compare canonical pathnames. */
4717 char* input_realname = lrealpath (gcc_input_filename);
4718 char* temp_realname = lrealpath (temp_filename);
4719 bool files_differ = strcmp (input_realname, temp_realname);
4720 free (input_realname);
4721 free (temp_realname);
4725 temp_filename = save_string (temp_filename,
4726 temp_filename_length + 1);
4727 obstack_grow (&obstack, temp_filename,
4728 temp_filename_length);
4730 delete_this_arg = 0;
4736 /* See if we already have an association of %g/%u/%U and
4738 for (t = temp_names; t; t = t->next)
4739 if (t->length == suffix_length
4740 && strncmp (t->suffix, suffix, suffix_length) == 0
4741 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
4744 /* Make a new association if needed. %u and %j
4746 if (t == 0 || c == 'u' || c == 'j')
4750 t = XNEW (struct temp_name);
4751 t->next = temp_names;
4754 t->length = suffix_length;
4757 t->suffix = saved_suffix;
4758 saved_suffix = NULL;
4761 t->suffix = save_string (suffix, suffix_length);
4762 t->unique = (c == 'u' || c == 'U' || c == 'j');
4763 temp_filename = make_temp_file (t->suffix);
4764 temp_filename_length = strlen (temp_filename);
4765 t->filename = temp_filename;
4766 t->filename_length = temp_filename_length;
4770 free (saved_suffix);
4772 obstack_grow (&obstack, t->filename, t->filename_length);
4773 delete_this_arg = 1;
4781 if (at_file_supplied)
4783 /* We are going to expand `%i' to `@FILE', where FILE
4784 is a newly-created temporary filename. The filenames
4785 that would usually be expanded in place of %o will be
4786 written to the temporary file. */
4791 for (i = 0; i < n_infiles; i++)
4792 if (compile_input_file_p (&infiles[i]))
4795 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
4797 /* Copy the strings over. */
4798 for (i = 0, j = 0; i < n_infiles; i++)
4799 if (compile_input_file_p (&infiles[i]))
4801 argv[j] = CONST_CAST (char *, infiles[i].name);
4802 infiles[i].compiled = true;
4807 create_at_file (argv);
4810 for (i = 0; (int) i < n_infiles; i++)
4811 if (compile_input_file_p (&infiles[i]))
4813 store_arg (infiles[i].name, 0, 0);
4814 infiles[i].compiled = true;
4819 obstack_grow (&obstack, gcc_input_filename,
4820 input_filename_length);
4827 struct spec_path_info info;
4831 do_spec_1 ("-imultilib", 1, NULL);
4832 /* Make this a separate argument. */
4833 do_spec_1 (" ", 0, NULL);
4834 do_spec_1 (multilib_dir, 1, NULL);
4835 do_spec_1 (" ", 0, NULL);
4838 if (gcc_exec_prefix)
4840 do_spec_1 ("-iprefix", 1, NULL);
4841 /* Make this a separate argument. */
4842 do_spec_1 (" ", 0, NULL);
4843 do_spec_1 (gcc_exec_prefix, 1, NULL);
4844 do_spec_1 (" ", 0, NULL);
4847 if (target_system_root_changed ||
4848 (target_system_root && target_sysroot_hdrs_suffix))
4850 do_spec_1 ("-isysroot", 1, NULL);
4851 /* Make this a separate argument. */
4852 do_spec_1 (" ", 0, NULL);
4853 do_spec_1 (target_system_root, 1, NULL);
4854 if (target_sysroot_hdrs_suffix)
4855 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
4856 do_spec_1 (" ", 0, NULL);
4859 info.option = "-isystem";
4860 info.append = "include";
4861 info.append_len = strlen (info.append);
4862 info.omit_relative = false;
4863 info.separate_options = true;
4865 for_each_path (&include_prefixes, false, info.append_len,
4868 info.append = "include-fixed";
4869 if (*sysroot_hdrs_suffix_spec)
4870 info.append = concat (info.append, dir_separator_str,
4871 multilib_dir, NULL);
4872 info.append_len = strlen (info.append);
4873 for_each_path (&include_prefixes, false, info.append_len,
4880 int max = n_infiles;
4881 max += lang_specific_extra_outfiles;
4883 if (HAVE_GNU_LD && at_file_supplied)
4885 /* We are going to expand `%o' to `@FILE', where FILE
4886 is a newly-created temporary filename. The filenames
4887 that would usually be expanded in place of %o will be
4888 written to the temporary file. */
4893 /* Convert OUTFILES into a form suitable for writeargv. */
4895 /* Determine how many are non-NULL. */
4896 for (n_files = 0, i = 0; i < max; i++)
4897 n_files += outfiles[i] != NULL;
4899 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
4901 /* Copy the strings over. */
4902 for (i = 0, j = 0; i < max; i++)
4905 argv[j] = CONST_CAST (char *, outfiles[i]);
4910 create_at_file (argv);
4913 for (i = 0; i < max; i++)
4915 store_arg (outfiles[i], 0, 0);
4920 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4925 this_is_library_file = 1;
4929 this_is_linker_script = 1;
4933 outfiles[input_file_number] = NULL;
4937 this_is_output_file = 1;
4942 unsigned int cur_index = VEC_length (const_char_p, argbuf);
4943 /* Handle the {...} following the %W. */
4945 fatal_error ("spec %qs has invalid %<%%W%c%>", spec, *p);
4946 p = handle_braces (p + 1);
4950 /* If any args were output, mark the last one for deletion
4952 if (VEC_length (const_char_p, argbuf) != cur_index)
4953 record_temp_file (VEC_last (const_char_p, argbuf), 0, 1);
4957 /* %x{OPTION} records OPTION for %X to output. */
4965 /* Skip past the option value and make a copy. */
4967 fatal_error ("spec %qs has invalid %<%%x%c%>", spec, *p);
4970 string = save_string (p1 + 1, p - p1 - 2);
4972 /* See if we already recorded this option. */
4973 FOR_EACH_VEC_ELT (char_p, linker_options, ix, opt)
4974 if (! strcmp (string, opt))
4980 /* This option is new; add it. */
4981 add_linker_option (string, strlen (string));
4985 /* Dump out the options accumulated previously using %x. */
4987 do_specs_vec (linker_options);
4990 /* Dump out the options accumulated previously using -Wa,. */
4992 do_specs_vec (assembler_options);
4995 /* Dump out the options accumulated previously using -Wp,. */
4997 do_specs_vec (preprocessor_options);
5000 /* Here are digits and numbers that just process
5001 a certain constant string as a spec. */
5004 value = do_spec_1 (cc1_spec, 0, NULL);
5010 value = do_spec_1 (cc1plus_spec, 0, NULL);
5016 value = do_spec_1 (asm_spec, 0, NULL);
5022 value = do_spec_1 (asm_final_spec, 0, NULL);
5029 const char *const spec
5030 = (input_file_compiler->cpp_spec
5031 ? input_file_compiler->cpp_spec
5033 value = do_spec_1 (spec, 0, NULL);
5040 value = do_spec_1 (endfile_spec, 0, NULL);
5046 value = do_spec_1 (link_spec, 0, NULL);
5052 value = do_spec_1 (lib_spec, 0, NULL);
5058 value = do_spec_1 (libgcc_spec, 0, NULL);
5064 /* We assume there is a directory
5065 separator at the end of this string. */
5066 if (target_system_root)
5068 obstack_grow (&obstack, target_system_root,
5069 strlen (target_system_root));
5070 if (target_sysroot_suffix)
5071 obstack_grow (&obstack, target_sysroot_suffix,
5072 strlen (target_sysroot_suffix));
5077 value = do_spec_1 (startfile_spec, 0, NULL);
5082 /* Here we define characters other than letters and digits. */
5085 p = handle_braces (p);
5091 p = handle_spec_function (p);
5097 obstack_1grow (&obstack, '%');
5104 while (p[len] && p[len] != ' ' && p[len] != '%')
5106 suffix_subst = save_string (p - 1, len + 1);
5111 /* Henceforth ignore the option(s) matching the pattern
5116 int have_wildcard = 0;
5119 while (p[len] && p[len] != ' ' && p[len] != '\t')
5122 if (p[len-1] == '*')
5125 for (i = 0; i < n_switches; i++)
5126 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5127 && (have_wildcard || switches[i].part1[len] == '\0'))
5129 switches[i].live_cond |= SWITCH_IGNORE;
5130 switches[i].validated = 1;
5138 if (soft_matched_part)
5140 do_spec_1 (soft_matched_part, 1, NULL);
5141 do_spec_1 (" ", 0, NULL);
5144 /* Catch the case where a spec string contains something like
5145 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5146 hand side of the :. */
5147 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5150 /* Process a string found as the value of a spec given by name.
5151 This feature allows individual machine descriptions
5152 to add and use their own specs.
5153 %[...] modifies -D options the way %P does;
5154 %(...) uses the spec unmodified. */
5156 warning (0, "use of obsolete %%[ operator in specs");
5159 const char *name = p;
5160 struct spec_list *sl;
5163 /* The string after the S/P is the name of a spec that is to be
5165 while (*p && *p != ')' && *p != ']')
5168 /* See if it's in the list. */
5169 for (len = p - name, sl = specs; sl; sl = sl->next)
5170 if (sl->name_len == len && !strncmp (sl->name, name, len))
5172 name = *(sl->ptr_spec);
5174 fnotice (stderr, "Processing spec %c%s%c, which is '%s'\n",
5175 c, sl->name, (c == '(') ? ')' : ']', name);
5184 value = do_spec_1 (name, 0, NULL);
5190 char *x = (char *) alloca (strlen (name) * 2 + 1);
5192 const char *y = name;
5195 /* Copy all of NAME into BUF, but put __ after
5196 every -D and at the end of each arg. */
5199 if (! strncmp (y, "-D", 2))
5210 && (*y == ' ' || *y == '\t' || *y == '='
5211 || *y == '}' || *y == 0))
5224 value = do_spec_1 (buf, 0, NULL);
5230 /* Discard the closing paren or bracket. */
5237 error ("spec failure: unrecognized spec option %qc", c);
5243 /* Backslash: treat next character as ordinary. */
5248 /* Ordinary character: put it into the current argument. */
5249 obstack_1grow (&obstack, c);
5253 /* End of string. If we are processing a spec function, we need to
5254 end any pending argument. */
5255 if (processing_spec_function)
5261 /* Look up a spec function. */
5263 static const struct spec_function *
5264 lookup_spec_function (const char *name)
5266 const struct spec_function *sf;
5268 for (sf = static_spec_functions; sf->name != NULL; sf++)
5269 if (strcmp (sf->name, name) == 0)
5275 /* Evaluate a spec function. */
5278 eval_spec_function (const char *func, const char *args)
5280 const struct spec_function *sf;
5281 const char *funcval;
5283 /* Saved spec processing context. */
5284 VEC(const_char_p,heap) *save_argbuf;
5287 int save_delete_this_arg;
5288 int save_this_is_output_file;
5289 int save_this_is_library_file;
5290 int save_input_from_pipe;
5291 int save_this_is_linker_script;
5292 const char *save_suffix_subst;
5295 sf = lookup_spec_function (func);
5297 fatal_error ("unknown spec function %qs", func);
5299 /* Push the spec processing context. */
5300 save_argbuf = argbuf;
5302 save_arg_going = arg_going;
5303 save_delete_this_arg = delete_this_arg;
5304 save_this_is_output_file = this_is_output_file;
5305 save_this_is_library_file = this_is_library_file;
5306 save_this_is_linker_script = this_is_linker_script;
5307 save_input_from_pipe = input_from_pipe;
5308 save_suffix_subst = suffix_subst;
5310 /* Create a new spec processing context, and build the function
5314 if (do_spec_2 (args) < 0)
5315 fatal_error ("error in args to spec function %qs", func);
5317 /* argbuf_index is an index for the next argument to be inserted, and
5318 so contains the count of the args already inserted. */
5320 funcval = (*sf->func) (VEC_length (const_char_p, argbuf),
5321 VEC_address (const_char_p, argbuf));
5323 /* Pop the spec processing context. */
5324 VEC_free (const_char_p, heap, argbuf);
5325 argbuf = save_argbuf;
5327 arg_going = save_arg_going;
5328 delete_this_arg = save_delete_this_arg;
5329 this_is_output_file = save_this_is_output_file;
5330 this_is_library_file = save_this_is_library_file;
5331 this_is_linker_script = save_this_is_linker_script;
5332 input_from_pipe = save_input_from_pipe;
5333 suffix_subst = save_suffix_subst;
5338 /* Handle a spec function call of the form:
5342 ARGS is processed as a spec in a separate context and split into an
5343 argument vector in the normal fashion. The function returns a string
5344 containing a spec which we then process in the caller's context, or
5345 NULL if no processing is required. */
5348 handle_spec_function (const char *p)
5351 const char *endp, *funcval;
5354 processing_spec_function++;
5356 /* Get the function name. */
5357 for (endp = p; *endp != '\0'; endp++)
5359 if (*endp == '(') /* ) */
5361 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5362 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5363 fatal_error ("malformed spec function name");
5365 if (*endp != '(') /* ) */
5366 fatal_error ("no arguments for spec function");
5367 func = save_string (p, endp - p);
5370 /* Get the arguments. */
5371 for (count = 0; *endp != '\0'; endp++)
5380 else if (*endp == '(') /* ) */
5385 fatal_error ("malformed spec function arguments");
5386 args = save_string (p, endp - p);
5389 /* p now points to just past the end of the spec function expression. */
5391 funcval = eval_spec_function (func, args);
5392 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5398 processing_spec_function--;
5403 /* Inline subroutine of handle_braces. Returns true if the current
5404 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5406 input_suffix_matches (const char *atom, const char *end_atom)
5408 return (input_suffix
5409 && !strncmp (input_suffix, atom, end_atom - atom)
5410 && input_suffix[end_atom - atom] == '\0');
5413 /* Subroutine of handle_braces. Returns true if the current
5414 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5416 input_spec_matches (const char *atom, const char *end_atom)
5418 return (input_file_compiler
5419 && input_file_compiler->suffix
5420 && input_file_compiler->suffix[0] != '\0'
5421 && !strncmp (input_file_compiler->suffix + 1, atom,
5423 && input_file_compiler->suffix[end_atom - atom + 1] == '\0');
5426 /* Subroutine of handle_braces. Returns true if a switch
5427 matching the atom bracketed by ATOM and END_ATOM appeared on the
5430 switch_matches (const char *atom, const char *end_atom, int starred)
5433 int len = end_atom - atom;
5434 int plen = starred ? len : -1;
5436 for (i = 0; i < n_switches; i++)
5437 if (!strncmp (switches[i].part1, atom, len)
5438 && (starred || switches[i].part1[len] == '\0')
5439 && check_live_switch (i, plen))
5445 /* Inline subroutine of handle_braces. Mark all of the switches which
5446 match ATOM (extends to END_ATOM; STARRED indicates whether there
5447 was a star after the atom) for later processing. */
5449 mark_matching_switches (const char *atom, const char *end_atom, int starred)
5452 int len = end_atom - atom;
5453 int plen = starred ? len : -1;
5455 for (i = 0; i < n_switches; i++)
5456 if (!strncmp (switches[i].part1, atom, len)
5457 && (starred || switches[i].part1[len] == '\0')
5458 && check_live_switch (i, plen))
5459 switches[i].ordering = 1;
5462 /* Inline subroutine of handle_braces. Process all the currently
5463 marked switches through give_switch, and clear the marks. */
5465 process_marked_switches (void)
5469 for (i = 0; i < n_switches; i++)
5470 if (switches[i].ordering == 1)
5472 switches[i].ordering = 0;
5477 /* Handle a %{ ... } construct. P points just inside the leading {.
5478 Returns a pointer one past the end of the brace block, or 0
5479 if we call do_spec_1 and that returns -1. */
5482 handle_braces (const char *p)
5484 const char *atom, *end_atom;
5485 const char *d_atom = NULL, *d_end_atom = NULL;
5486 const char *orig = p;
5494 bool a_must_be_last = false;
5495 bool ordered_set = false;
5496 bool disjunct_set = false;
5497 bool disj_matched = false;
5498 bool disj_starred = true;
5499 bool n_way_choice = false;
5500 bool n_way_matched = false;
5502 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5509 /* Scan one "atom" (S in the description above of %{}, possibly
5510 with '!', '.', '@', ',', or '*' modifiers). */
5512 a_is_suffix = false;
5513 a_is_starred = false;
5514 a_is_negated = false;
5515 a_is_spectype = false;
5519 p++, a_is_negated = true;
5523 p++, a_is_suffix = true;
5525 p++, a_is_spectype = true;
5528 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5529 || *p == ',' || *p == '.' || *p == '@')
5534 p++, a_is_starred = 1;
5540 /* Substitute the switch(es) indicated by the current atom. */
5542 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5543 || a_is_spectype || atom == end_atom)
5546 mark_matching_switches (atom, end_atom, a_is_starred);
5549 process_marked_switches ();
5553 /* Substitute some text if the current atom appears as a switch
5555 disjunct_set = true;
5559 if (atom == end_atom)
5561 if (!n_way_choice || disj_matched || *p == '|'
5562 || a_is_negated || a_is_suffix || a_is_spectype
5566 /* An empty term may appear as the last choice of an
5567 N-way choice set; it means "otherwise". */
5568 a_must_be_last = true;
5569 disj_matched = !n_way_matched;
5570 disj_starred = false;
5574 if ((a_is_suffix || a_is_spectype) && a_is_starred)
5578 disj_starred = false;
5580 /* Don't bother testing this atom if we already have a
5582 if (!disj_matched && !n_way_matched)
5585 a_matched = input_suffix_matches (atom, end_atom);
5586 else if (a_is_spectype)
5587 a_matched = input_spec_matches (atom, end_atom);
5589 a_matched = switch_matches (atom, end_atom, a_is_starred);
5591 if (a_matched != a_is_negated)
5593 disj_matched = true;
5595 d_end_atom = end_atom;
5602 /* Found the body, that is, the text to substitute if the
5603 current disjunction matches. */
5604 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5605 disj_matched && !n_way_matched);
5609 /* If we have an N-way choice, reset state for the next
5613 n_way_choice = true;
5614 n_way_matched |= disj_matched;
5615 disj_matched = false;
5616 disj_starred = true;
5617 d_atom = d_end_atom = NULL;
5626 while (*p++ != '}');
5631 fatal_error ("braced spec %qs is invalid at %qc", orig, *p);
5636 /* Subroutine of handle_braces. Scan and process a brace substitution body
5637 (X in the description of %{} syntax). P points one past the colon;
5638 ATOM and END_ATOM bracket the first atom which was found to be true
5639 (present) in the current disjunction; STARRED indicates whether all
5640 the atoms in the current disjunction were starred (for syntax validation);
5641 MATCHED indicates whether the disjunction matched or not, and therefore
5642 whether or not the body is to be processed through do_spec_1 or just
5643 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5647 process_brace_body (const char *p, const char *atom, const char *end_atom,
5648 int starred, int matched)
5650 const char *body, *end_body;
5651 unsigned int nesting_level;
5652 bool have_subst = false;
5654 /* Locate the closing } or ;, honoring nested braces.
5655 Trim trailing whitespace. */
5664 if (!--nesting_level)
5667 else if (*p == ';' && nesting_level == 1)
5669 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
5671 else if (*p == '\0')
5677 while (end_body[-1] == ' ' || end_body[-1] == '\t')
5680 if (have_subst && !starred)
5685 /* Copy the substitution body to permanent storage and execute it.
5686 If have_subst is false, this is a simple matter of running the
5687 body through do_spec_1... */
5688 char *string = save_string (body, end_body - body);
5691 if (do_spec_1 (string, 0, NULL) < 0)
5696 /* ... but if have_subst is true, we have to process the
5697 body once for each matching switch, with %* set to the
5698 variant part of the switch. */
5699 unsigned int hard_match_len = end_atom - atom;
5702 for (i = 0; i < n_switches; i++)
5703 if (!strncmp (switches[i].part1, atom, hard_match_len)
5704 && check_live_switch (i, hard_match_len))
5706 if (do_spec_1 (string, 0,
5707 &switches[i].part1[hard_match_len]) < 0)
5709 /* Pass any arguments this switch has. */
5711 suffix_subst = NULL;
5719 fatal_error ("braced spec body %qs is invalid", body);
5722 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5723 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5724 spec, or -1 if either exact match or %* is used.
5726 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5727 whose value does not begin with "no-" is obsoleted by the same value
5728 with the "no-", similarly for a switch with the "no-" prefix. */
5731 check_live_switch (int switchnum, int prefix_length)
5733 const char *name = switches[switchnum].part1;
5736 /* If we already processed this switch and determined if it was
5737 live or not, return our past determination. */
5738 if (switches[switchnum].live_cond != 0)
5739 return ((switches[switchnum].live_cond & SWITCH_LIVE) != 0
5740 && (switches[switchnum].live_cond & SWITCH_FALSE) == 0
5741 && (switches[switchnum].live_cond & SWITCH_IGNORE_PERMANENTLY)
5744 /* In the common case of {<at-most-one-letter>*}, a negating
5745 switch would always match, so ignore that case. We will just
5746 send the conflicting switches to the compiler phase. */
5747 if (prefix_length >= 0 && prefix_length <= 1)
5750 /* Now search for duplicate in a manner that depends on the name. */
5754 for (i = switchnum + 1; i < n_switches; i++)
5755 if (switches[i].part1[0] == 'O')
5757 switches[switchnum].validated = 1;
5758 switches[switchnum].live_cond = SWITCH_FALSE;
5763 case 'W': case 'f': case 'm':
5764 if (! strncmp (name + 1, "no-", 3))
5766 /* We have Xno-YYY, search for XYYY. */
5767 for (i = switchnum + 1; i < n_switches; i++)
5768 if (switches[i].part1[0] == name[0]
5769 && ! strcmp (&switches[i].part1[1], &name[4]))
5771 switches[switchnum].validated = 1;
5772 switches[switchnum].live_cond = SWITCH_FALSE;
5778 /* We have XYYY, search for Xno-YYY. */
5779 for (i = switchnum + 1; i < n_switches; i++)
5780 if (switches[i].part1[0] == name[0]
5781 && switches[i].part1[1] == 'n'
5782 && switches[i].part1[2] == 'o'
5783 && switches[i].part1[3] == '-'
5784 && !strcmp (&switches[i].part1[4], &name[1]))
5786 switches[switchnum].validated = 1;
5787 switches[switchnum].live_cond = SWITCH_FALSE;
5794 /* Otherwise the switch is live. */
5795 switches[switchnum].live_cond |= SWITCH_LIVE;
5799 /* Pass a switch to the current accumulating command
5800 in the same form that we received it.
5801 SWITCHNUM identifies the switch; it is an index into
5802 the vector of switches gcc received, which is `switches'.
5803 This cannot fail since it never finishes a command line.
5805 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5808 give_switch (int switchnum, int omit_first_word)
5810 if ((switches[switchnum].live_cond & SWITCH_IGNORE) != 0)
5813 if (!omit_first_word)
5815 do_spec_1 ("-", 0, NULL);
5816 do_spec_1 (switches[switchnum].part1, 1, NULL);
5819 if (switches[switchnum].args != 0)
5822 for (p = switches[switchnum].args; *p; p++)
5824 const char *arg = *p;
5826 do_spec_1 (" ", 0, NULL);
5829 unsigned length = strlen (arg);
5832 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5833 if (arg[length] == '.')
5835 (CONST_CAST(char *, arg))[length] = 0;
5839 do_spec_1 (arg, 1, NULL);
5841 (CONST_CAST(char *, arg))[length] = '.';
5842 do_spec_1 (suffix_subst, 1, NULL);
5845 do_spec_1 (arg, 1, NULL);
5849 do_spec_1 (" ", 0, NULL);
5850 switches[switchnum].validated = 1;
5853 /* Search for a file named NAME trying various prefixes including the
5854 user's -B prefix and some standard ones.
5855 Return the absolute file name found. If nothing is found, return NAME. */
5858 find_file (const char *name)
5860 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true);
5861 return newname ? newname : name;
5864 /* Determine whether a directory exists. If LINKER, return 0 for
5865 certain fixed names not needed by the linker. */
5868 is_directory (const char *path1, bool linker)
5875 /* Ensure the string ends with "/.". The resulting path will be a
5876 directory even if the given path is a symbolic link. */
5877 len1 = strlen (path1);
5878 path = (char *) alloca (3 + len1);
5879 memcpy (path, path1, len1);
5881 if (!IS_DIR_SEPARATOR (cp[-1]))
5882 *cp++ = DIR_SEPARATOR;
5886 /* Exclude directories that the linker is known to search. */
5888 && IS_DIR_SEPARATOR (path[0])
5890 && strncmp (path + 1, "lib", 3) == 0)
5892 && strncmp (path + 1, "usr", 3) == 0
5893 && IS_DIR_SEPARATOR (path[4])
5894 && strncmp (path + 5, "lib", 3) == 0)))
5897 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5900 /* Set up the various global variables to indicate that we're processing
5901 the input file named FILENAME. */
5904 set_input (const char *filename)
5908 gcc_input_filename = filename;
5909 input_filename_length = strlen (gcc_input_filename);
5910 input_basename = lbasename (gcc_input_filename);
5912 /* Find a suffix starting with the last period,
5913 and set basename_length to exclude that suffix. */
5914 basename_length = strlen (input_basename);
5915 suffixed_basename_length = basename_length;
5916 p = input_basename + basename_length;
5917 while (p != input_basename && *p != '.')
5919 if (*p == '.' && p != input_basename)
5921 basename_length = p - input_basename;
5922 input_suffix = p + 1;
5927 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5928 we will need to do a stat on the gcc_input_filename. The
5929 INPUT_STAT_SET signals that the stat is needed. */
5933 /* On fatal signals, delete all the temporary files. */
5936 fatal_signal (int signum)
5938 signal (signum, SIG_DFL);
5939 delete_failure_queue ();
5940 delete_temp_files ();
5941 /* Get the same signal again, this time not handled,
5942 so its normal effect occurs. */
5943 kill (getpid (), signum);
5946 /* Compare the contents of the two files named CMPFILE[0] and
5947 CMPFILE[1]. Return zero if they're identical, nonzero
5951 compare_files (char *cmpfile[])
5954 FILE *temp[2] = { NULL, NULL };
5960 void *map[2] = { NULL, NULL };
5962 for (i = 0; i < 2; i++)
5966 if (stat (cmpfile[i], &st) < 0 || !S_ISREG (st.st_mode))
5968 error ("%s: could not determine length of compare-debug file %s",
5969 gcc_input_filename, cmpfile[i]);
5974 length[i] = st.st_size;
5977 if (!ret && length[0] != length[1])
5979 error ("%s: -fcompare-debug failure (length)", gcc_input_filename);
5984 for (i = 0; i < 2; i++)
5986 int fd = open (cmpfile[i], O_RDONLY);
5989 error ("%s: could not open compare-debug file %s",
5990 gcc_input_filename, cmpfile[i]);
5995 map[i] = mmap (NULL, length[i], PROT_READ, MAP_PRIVATE, fd, 0);
5998 if (map[i] == (void *) MAP_FAILED)
6007 if (memcmp (map[0], map[1], length[0]) != 0)
6009 error ("%s: -fcompare-debug failure", gcc_input_filename);
6014 for (i = 0; i < 2; i++)
6016 munmap ((caddr_t) map[i], length[i]);
6025 for (i = 0; i < 2; i++)
6027 temp[i] = fopen (cmpfile[i], "r");
6030 error ("%s: could not open compare-debug file %s",
6031 gcc_input_filename, cmpfile[i]);
6037 if (!ret && temp[0] && temp[1])
6041 c0 = fgetc (temp[0]);
6042 c1 = fgetc (temp[1]);
6046 error ("%s: -fcompare-debug failure",
6047 gcc_input_filename);
6056 for (i = 1; i >= 0; i--)
6065 extern int main (int, char **);
6068 main (int argc, char **argv)
6072 int linker_was_run = 0;
6073 int lang_n_infiles = 0;
6074 int num_linker_inputs = 0;
6075 char *explicit_link_files;
6078 struct user_specs *uptr;
6079 char **old_argv = argv;
6080 struct cl_decoded_option *decoded_options;
6081 unsigned int decoded_options_count;
6083 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
6084 on ?: in file-scope variable initializations. */
6085 asm_debug = ASM_DEBUG_SPEC;
6087 p = argv[0] + strlen (argv[0]);
6088 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
6092 xmalloc_set_program_name (progname);
6094 expandargv (&argc, &argv);
6096 /* Determine if any expansions were made. */
6097 if (argv != old_argv)
6098 at_file_supplied = true;
6100 global_options = global_options_init;
6102 decode_cmdline_options_to_array (argc, CONST_CAST2 (const char **, char **,
6105 &decoded_options, &decoded_options_count);
6107 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6108 /* Perform host dependent initialization when needed. */
6109 GCC_DRIVER_HOST_INITIALIZATION;
6112 /* Unlock the stdio streams. */
6113 unlock_std_streams ();
6115 gcc_init_libintl ();
6117 diagnostic_initialize (global_dc, 0);
6118 if (atexit (delete_temp_files) != 0)
6119 fatal_error ("atexit failed");
6121 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
6122 signal (SIGINT, fatal_signal);
6124 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
6125 signal (SIGHUP, fatal_signal);
6127 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
6128 signal (SIGTERM, fatal_signal);
6130 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
6131 signal (SIGPIPE, fatal_signal);
6134 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6135 receive the signal. A different setting is inheritable */
6136 signal (SIGCHLD, SIG_DFL);
6139 /* Allocate the argument vector. */
6142 obstack_init (&obstack);
6144 /* Build multilib_select, et. al from the separate lines that make up each
6145 multilib selection. */
6147 const char *const *q = multilib_raw;
6150 obstack_init (&multilib_obstack);
6151 while ((p = *q++) != (char *) 0)
6152 obstack_grow (&multilib_obstack, p, strlen (p));
6154 obstack_1grow (&multilib_obstack, 0);
6155 multilib_select = XOBFINISH (&multilib_obstack, const char *);
6157 q = multilib_matches_raw;
6158 while ((p = *q++) != (char *) 0)
6159 obstack_grow (&multilib_obstack, p, strlen (p));
6161 obstack_1grow (&multilib_obstack, 0);
6162 multilib_matches = XOBFINISH (&multilib_obstack, const char *);
6164 q = multilib_exclusions_raw;
6165 while ((p = *q++) != (char *) 0)
6166 obstack_grow (&multilib_obstack, p, strlen (p));
6168 obstack_1grow (&multilib_obstack, 0);
6169 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *);
6172 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
6175 obstack_1grow (&multilib_obstack, ' ');
6176 obstack_grow (&multilib_obstack,
6177 multilib_defaults_raw[i],
6178 strlen (multilib_defaults_raw[i]));
6182 obstack_1grow (&multilib_obstack, 0);
6183 multilib_defaults = XOBFINISH (&multilib_obstack, const char *);
6186 #ifdef INIT_ENVIRONMENT
6187 /* Set up any other necessary machine specific environment variables. */
6188 xputenv (INIT_ENVIRONMENT);
6191 /* Make a table of what switches there are (switches, n_switches).
6192 Make a table of specified input files (infiles, n_infiles).
6193 Decode switches that are handled locally. */
6195 process_command (decoded_options_count, decoded_options);
6197 /* Initialize the vector of specs to just the default.
6198 This means one element containing 0s, as a terminator. */
6200 compilers = XNEWVAR (struct compiler, sizeof default_compilers);
6201 memcpy (compilers, default_compilers, sizeof default_compilers);
6202 n_compilers = n_default_compilers;
6204 /* Read specs from a file if there is one. */
6206 machine_suffix = concat (spec_machine, dir_separator_str,
6207 spec_version, dir_separator_str, NULL);
6208 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6210 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true);
6211 /* Read the specs file unless it is a default one. */
6212 if (specs_file != 0 && strcmp (specs_file, "specs"))
6213 read_specs (specs_file, TRUE);
6217 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6218 for any override of as, ld and libraries. */
6219 specs_file = (char *) alloca (strlen (standard_exec_prefix)
6220 + strlen (just_machine_suffix) + sizeof ("specs"));
6222 strcpy (specs_file, standard_exec_prefix);
6223 strcat (specs_file, just_machine_suffix);
6224 strcat (specs_file, "specs");
6225 if (access (specs_file, R_OK) == 0)
6226 read_specs (specs_file, TRUE);
6228 /* Process any configure-time defaults specified for the command line
6229 options, via OPTION_DEFAULT_SPECS. */
6230 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6231 do_option_spec (option_default_specs[i].name,
6232 option_default_specs[i].spec);
6234 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6235 of the command line. */
6237 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6238 do_self_spec (driver_self_specs[i]);
6242 enum save_temps save;
6244 if (!compare_debug_second)
6246 n_switches_debug_check[1] = n_switches;
6247 n_switches_alloc_debug_check[1] = n_switches_alloc;
6248 switches_debug_check[1] = XDUPVEC (struct switchstr, switches,
6251 do_self_spec ("%:compare-debug-self-opt()");
6252 n_switches_debug_check[0] = n_switches;
6253 n_switches_alloc_debug_check[0] = n_switches_alloc;
6254 switches_debug_check[0] = switches;
6256 n_switches = n_switches_debug_check[1];
6257 n_switches_alloc = n_switches_alloc_debug_check[1];
6258 switches = switches_debug_check[1];
6261 /* Avoid crash when computing %j in this early. */
6262 save = save_temps_flag;
6263 save_temps_flag = SAVE_TEMPS_NONE;
6265 compare_debug = -compare_debug;
6266 do_self_spec ("%:compare-debug-self-opt()");
6268 save_temps_flag = save;
6270 if (!compare_debug_second)
6272 n_switches_debug_check[1] = n_switches;
6273 n_switches_alloc_debug_check[1] = n_switches_alloc;
6274 switches_debug_check[1] = switches;
6275 compare_debug = -compare_debug;
6276 n_switches = n_switches_debug_check[0];
6277 n_switches_alloc = n_switches_debug_check[0];
6278 switches = switches_debug_check[0];
6282 /* If not cross-compiling, look for executables in the standard
6284 if (*cross_compile == '0')
6286 if (*md_exec_prefix)
6288 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6289 PREFIX_PRIORITY_LAST, 0, 0);
6293 /* Process sysroot_suffix_spec. */
6294 if (*sysroot_suffix_spec != 0
6295 && do_spec_2 (sysroot_suffix_spec) == 0)
6297 if (VEC_length (const_char_p, argbuf) > 1)
6298 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6299 else if (VEC_length (const_char_p, argbuf) == 1)
6300 target_sysroot_suffix = xstrdup (VEC_last (const_char_p, argbuf));
6303 #ifdef HAVE_LD_SYSROOT
6304 /* Pass the --sysroot option to the linker, if it supports that. If
6305 there is a sysroot_suffix_spec, it has already been processed by
6306 this point, so target_system_root really is the system root we
6308 if (target_system_root)
6310 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6311 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
6312 set_spec ("link", XOBFINISH (&obstack, const char *));
6316 /* Process sysroot_hdrs_suffix_spec. */
6317 if (*sysroot_hdrs_suffix_spec != 0
6318 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6320 if (VEC_length (const_char_p, argbuf) > 1)
6321 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6322 else if (VEC_length (const_char_p, argbuf) == 1)
6323 target_sysroot_hdrs_suffix = xstrdup (VEC_last (const_char_p, argbuf));
6326 /* Look for startfiles in the standard places. */
6327 if (*startfile_prefix_spec != 0
6328 && do_spec_2 (startfile_prefix_spec) == 0
6329 && do_spec_1 (" ", 0, NULL) == 0)
6333 FOR_EACH_VEC_ELT (const_char_p, argbuf, ndx, arg)
6334 add_sysrooted_prefix (&startfile_prefixes, arg, "BINUTILS",
6335 PREFIX_PRIORITY_LAST, 0, 1);
6337 /* We should eventually get rid of all these and stick to
6338 startfile_prefix_spec exclusively. */
6339 else if (*cross_compile == '0' || target_system_root)
6341 if (*md_startfile_prefix)
6342 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6343 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6345 if (*md_startfile_prefix_1)
6346 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6347 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6349 /* If standard_startfile_prefix is relative, base it on
6350 standard_exec_prefix. This lets us move the installed tree
6351 as a unit. If GCC_EXEC_PREFIX is defined, base
6352 standard_startfile_prefix on that as well.
6354 If the prefix is relative, only search it for native compilers;
6355 otherwise we will search a directory containing host libraries. */
6356 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
6357 add_sysrooted_prefix (&startfile_prefixes,
6358 standard_startfile_prefix, "BINUTILS",
6359 PREFIX_PRIORITY_LAST, 0, 1);
6360 else if (*cross_compile == '0')
6362 add_prefix (&startfile_prefixes,
6363 concat (gcc_exec_prefix
6364 ? gcc_exec_prefix : standard_exec_prefix,
6366 standard_startfile_prefix, NULL),
6367 NULL, PREFIX_PRIORITY_LAST, 0, 1);
6370 /* Sysrooted prefixes are relocated because target_system_root is
6371 also relocated by gcc_exec_prefix. */
6372 if (*standard_startfile_prefix_1)
6373 add_sysrooted_prefix (&startfile_prefixes,
6374 standard_startfile_prefix_1, "BINUTILS",
6375 PREFIX_PRIORITY_LAST, 0, 1);
6376 if (*standard_startfile_prefix_2)
6377 add_sysrooted_prefix (&startfile_prefixes,
6378 standard_startfile_prefix_2, "BINUTILS",
6379 PREFIX_PRIORITY_LAST, 0, 1);
6382 /* Process any user specified specs in the order given on the command
6384 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6386 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6388 read_specs (filename ? filename : uptr->filename, FALSE);
6391 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6392 if (gcc_exec_prefix)
6393 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6394 spec_version, dir_separator_str, NULL);
6396 /* Now we have the specs.
6397 Set the `valid' bits for switches that match anything in any spec. */
6399 validate_all_switches ();
6401 /* Now that we have the switches and the specs, set
6402 the subdirectory based on the options. */
6403 set_multilib_dir ();
6405 /* Set up to remember the pathname of gcc and any options
6406 needed for collect. We use argv[0] instead of progname because
6407 we need the complete pathname. */
6408 obstack_init (&collect_obstack);
6409 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6410 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6411 xputenv (XOBFINISH (&collect_obstack, char *));
6413 /* Set up to remember the pathname of the lto wrapper. */
6415 lto_wrapper_spec = find_a_file (&exec_prefixes, "lto-wrapper", X_OK, false);
6416 if (lto_wrapper_spec)
6418 obstack_init (&collect_obstack);
6419 obstack_grow (&collect_obstack, "COLLECT_LTO_WRAPPER=",
6420 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
6421 obstack_grow (&collect_obstack, lto_wrapper_spec,
6422 strlen (lto_wrapper_spec) + 1);
6423 xputenv (XOBFINISH (&collect_obstack, char *));
6426 /* Warn about any switches that no pass was interested in. */
6428 for (i = 0; (int) i < n_switches; i++)
6429 if (! switches[i].validated)
6430 error ("unrecognized option %<-%s%>", switches[i].part1);
6432 /* Obey some of the options. */
6434 if (print_search_dirs)
6436 printf (_("install: %s%s\n"),
6437 gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
6438 gcc_exec_prefix ? "" : machine_suffix);
6439 printf (_("programs: %s\n"),
6440 build_search_list (&exec_prefixes, "", false, false));
6441 printf (_("libraries: %s\n"),
6442 build_search_list (&startfile_prefixes, "", false, true));
6446 if (print_file_name)
6448 printf ("%s\n", find_file (print_file_name));
6452 if (print_prog_name)
6454 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6455 printf ("%s\n", (newname ? newname : print_prog_name));
6459 if (print_multi_lib)
6461 print_multilib_info ();
6465 if (print_multi_directory)
6467 if (multilib_dir == NULL)
6470 printf ("%s\n", multilib_dir);
6476 if (target_system_root)
6478 if (target_sysroot_suffix)
6479 printf ("%s%s\n", target_system_root, target_sysroot_suffix);
6481 printf ("%s\n", target_system_root);
6486 if (print_multi_os_directory)
6488 if (multilib_os_dir == NULL)
6491 printf ("%s\n", multilib_os_dir);
6495 if (print_sysroot_headers_suffix)
6497 if (*sysroot_hdrs_suffix_spec)
6499 printf("%s\n", (target_sysroot_hdrs_suffix
6500 ? target_sysroot_hdrs_suffix
6505 /* The error status indicates that only one set of fixed
6506 headers should be built. */
6507 fatal_error ("not configured with sysroot headers suffix");
6510 if (print_help_list)
6516 printf (_("\nFor bug reporting instructions, please see:\n"));
6517 printf ("%s.\n", bug_report_url);
6522 /* We do not exit here. Instead we have created a fake input file
6523 called 'help-dummy' which needs to be compiled, and we pass this
6524 on the various sub-processes, along with the --help switch.
6525 Ensure their output appears after ours. */
6526 fputc ('\n', stdout);
6532 printf (_("%s %s%s\n"), progname, pkgversion_string,
6534 printf ("Copyright %s 2010 Free Software Foundation, Inc.\n",
6536 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
6537 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
6542 /* We do not exit here. We use the same mechanism of --help to print
6543 the version of the sub-processes. */
6544 fputc ('\n', stdout);
6553 fnotice (stderr, "Target: %s\n", spec_machine);
6554 fnotice (stderr, "Configured with: %s\n", configuration_arguments);
6556 #ifdef THREAD_MODEL_SPEC
6557 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6558 but there's no point in doing all this processing just to get
6559 thread_model back. */
6560 obstack_init (&obstack);
6561 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6562 obstack_1grow (&obstack, '\0');
6563 thrmod = XOBFINISH (&obstack, const char *);
6565 thrmod = thread_model;
6568 fnotice (stderr, "Thread model: %s\n", thrmod);
6570 /* compiler_version is truncated at the first space when initialized
6571 from version string, so truncate version_string at the first space
6572 before comparing. */
6573 for (n = 0; version_string[n]; n++)
6574 if (version_string[n] == ' ')
6577 if (! strncmp (version_string, compiler_version, n)
6578 && compiler_version[n] == 0)
6579 fnotice (stderr, "gcc version %s %s\n", version_string,
6582 fnotice (stderr, "gcc driver version %s %sexecuting gcc version %s\n",
6583 version_string, pkgversion_string, compiler_version);
6589 if (n_infiles == added_libraries)
6590 fatal_error ("no input files");
6592 /* Make a place to record the compiler output file names
6593 that correspond to the input files. */
6596 i += lang_specific_extra_outfiles;
6597 outfiles = XCNEWVEC (const char *, i);
6599 /* Record which files were specified explicitly as link input. */
6601 explicit_link_files = XCNEWVEC (char, n_infiles);
6603 combine_inputs = have_o || flag_wpa;
6605 for (i = 0; (int) i < n_infiles; i++)
6607 const char *name = infiles[i].name;
6608 struct compiler *compiler = lookup_compiler (name,
6610 infiles[i].language);
6612 if (compiler && !(compiler->combinable))
6613 combine_inputs = false;
6615 if (lang_n_infiles > 0 && compiler != input_file_compiler
6616 && infiles[i].language && infiles[i].language[0] != '*')
6617 infiles[i].incompiler = compiler;
6621 input_file_compiler = compiler;
6622 infiles[i].incompiler = compiler;
6626 /* Since there is no compiler for this input file, assume it is a
6628 explicit_link_files[i] = 1;
6629 infiles[i].incompiler = NULL;
6631 infiles[i].compiled = false;
6632 infiles[i].preprocessed = false;
6635 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1)
6636 fatal_error ("cannot specify -o with -c, -S or -E with multiple files");
6638 for (i = 0; (int) i < n_infiles; i++)
6640 int this_file_error = 0;
6642 /* Tell do_spec what to substitute for %i. */
6644 input_file_number = i;
6645 set_input (infiles[i].name);
6647 if (infiles[i].compiled)
6650 /* Use the same thing in %o, unless cp->spec says otherwise. */
6652 outfiles[i] = gcc_input_filename;
6654 /* Figure out which compiler from the file's suffix. */
6657 = lookup_compiler (infiles[i].name, input_filename_length,
6658 infiles[i].language);
6660 if (input_file_compiler)
6662 /* Ok, we found an applicable compiler. Run its spec. */
6664 if (input_file_compiler->spec[0] == '#')
6666 error ("%s: %s compiler not installed on this system",
6667 gcc_input_filename, &input_file_compiler->spec[1]);
6668 this_file_error = 1;
6674 if (debug_check_temp_file[0])
6675 free (debug_check_temp_file[0]);
6676 debug_check_temp_file[0] = NULL;
6678 if (debug_check_temp_file[1])
6679 free (debug_check_temp_file[1]);
6680 debug_check_temp_file[1] = NULL;
6683 value = do_spec (input_file_compiler->spec);
6684 infiles[i].compiled = true;
6686 this_file_error = 1;
6687 else if (compare_debug && debug_check_temp_file[0])
6690 inform (0, "recompiling with -fcompare-debug");
6692 compare_debug = -compare_debug;
6693 n_switches = n_switches_debug_check[1];
6694 n_switches_alloc = n_switches_alloc_debug_check[1];
6695 switches = switches_debug_check[1];
6697 value = do_spec (input_file_compiler->spec);
6699 compare_debug = -compare_debug;
6700 n_switches = n_switches_debug_check[0];
6701 n_switches_alloc = n_switches_alloc_debug_check[0];
6702 switches = switches_debug_check[0];
6706 error ("during -fcompare-debug recompilation");
6707 this_file_error = 1;
6710 gcc_assert (debug_check_temp_file[1]
6711 && strcmp (debug_check_temp_file[0],
6712 debug_check_temp_file[1]));
6715 inform (0, "comparing final insns dumps");
6717 if (compare_files (debug_check_temp_file))
6718 this_file_error = 1;
6723 if (debug_check_temp_file[0])
6724 free (debug_check_temp_file[0]);
6725 debug_check_temp_file[0] = NULL;
6727 if (debug_check_temp_file[1])
6728 free (debug_check_temp_file[1]);
6729 debug_check_temp_file[1] = NULL;
6734 /* If this file's name does not contain a recognized suffix,
6735 record it as explicit linker input. */
6738 explicit_link_files[i] = 1;
6740 /* Clear the delete-on-failure queue, deleting the files in it
6741 if this compilation failed. */
6743 if (this_file_error)
6745 delete_failure_queue ();
6748 /* If this compilation succeeded, don't delete those files later. */
6749 clear_failure_queue ();
6752 /* Reset the input file name to the first compile/object file name, for use
6753 with %b in LINK_SPEC. We use the first input file that we can find
6754 a compiler to compile it instead of using infiles.language since for
6755 languages other than C we use aliases that we then lookup later. */
6760 for (i = 0; i < n_infiles ; i++)
6761 if (infiles[i].language && infiles[i].language[0] != '*')
6763 set_input (infiles[i].name);
6770 /* Make sure INPUT_FILE_NUMBER points to first available open
6772 input_file_number = n_infiles;
6773 if (lang_specific_pre_link ())
6777 /* Determine if there are any linker input files. */
6778 num_linker_inputs = 0;
6779 for (i = 0; (int) i < n_infiles; i++)
6780 if (explicit_link_files[i] || outfiles[i] != NULL)
6781 num_linker_inputs++;
6783 /* Run ld to link all the compiler output files. */
6785 if (num_linker_inputs > 0 && !seen_error () && print_subprocess_help < 2)
6787 int tmp = execution_count;
6788 const char *fuse_linker_plugin = "fuse-linker-plugin";
6790 /* We'll use ld if we can't find collect2. */
6791 if (! strcmp (linker_name_spec, "collect2"))
6793 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false);
6795 linker_name_spec = "ld";
6798 if (switch_matches (fuse_linker_plugin,
6799 fuse_linker_plugin + strlen (fuse_linker_plugin), 0))
6801 linker_plugin_file_spec = find_a_file (&exec_prefixes,
6802 LTOPLUGINSONAME, R_OK,
6804 if (!linker_plugin_file_spec)
6805 fatal_error ("-fuse-linker-plugin, but " LTOPLUGINSONAME " not found");
6807 lto_libgcc_spec = find_a_file (&startfile_prefixes, "libgcc.a",
6809 if (!lto_libgcc_spec)
6810 fatal_error ("could not find libgcc.a");
6812 lto_gcc_spec = argv[0];
6814 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6816 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false);
6817 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true);
6819 if (print_subprocess_help == 1)
6821 printf (_("\nLinker options\n==============\n\n"));
6822 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
6823 " to the linker.\n\n"));
6826 value = do_spec (link_command_spec);
6829 linker_was_run = (tmp != execution_count);
6832 /* If options said don't run linker,
6833 complain about input files to be given to the linker. */
6835 if (! linker_was_run && !seen_error ())
6836 for (i = 0; (int) i < n_infiles; i++)
6837 if (explicit_link_files[i]
6838 && !(infiles[i].language && infiles[i].language[0] == '*'))
6839 warning (0, "%s: linker input file unused because linking not done",
6842 /* Delete some or all of the temporary files we made. */
6845 delete_failure_queue ();
6846 delete_temp_files ();
6848 if (print_help_list)
6850 printf (("\nFor bug reporting instructions, please see:\n"));
6851 printf ("%s\n", bug_report_url);
6854 return (signal_count != 0 ? 2
6855 : seen_error () ? (pass_exit_codes ? greatest_status : 1)
6859 /* Find the proper compilation spec for the file name NAME,
6860 whose length is LENGTH. LANGUAGE is the specified language,
6861 or 0 if this file is to be passed to the linker. */
6863 static struct compiler *
6864 lookup_compiler (const char *name, size_t length, const char *language)
6866 struct compiler *cp;
6868 /* If this was specified by the user to be a linker input, indicate that. */
6869 if (language != 0 && language[0] == '*')
6872 /* Otherwise, look for the language, if one is spec'd. */
6875 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6876 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6879 error ("language %s not recognized", language);
6883 /* Look for a suffix. */
6884 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6886 if (/* The suffix `-' matches only the file name `-'. */
6887 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6888 || (strlen (cp->suffix) < length
6889 /* See if the suffix matches the end of NAME. */
6890 && !strcmp (cp->suffix,
6891 name + length - strlen (cp->suffix))
6896 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6897 /* Look again, but case-insensitively this time. */
6899 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6901 if (/* The suffix `-' matches only the file name `-'. */
6902 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6903 || (strlen (cp->suffix) < length
6904 /* See if the suffix matches the end of NAME. */
6905 && ((!strcmp (cp->suffix,
6906 name + length - strlen (cp->suffix))
6907 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6908 && !strcasecmp (cp->suffix,
6909 name + length - strlen (cp->suffix)))
6915 if (cp >= compilers)
6917 if (cp->spec[0] != '@')
6918 /* A non-alias entry: return it. */
6921 /* An alias entry maps a suffix to a language.
6922 Search for the language; pass 0 for NAME and LENGTH
6923 to avoid infinite recursion if language not found. */
6924 return lookup_compiler (NULL, 0, cp->spec + 1);
6930 save_string (const char *s, int len)
6932 char *result = XNEWVEC (char, len + 1);
6934 memcpy (result, s, len);
6940 pfatal_with_name (const char *name)
6942 perror_with_name (name);
6943 delete_temp_files ();
6948 perror_with_name (const char *name)
6950 error ("%s: %m", name);
6954 validate_switches_from_spec (const char *spec)
6956 const char *p = spec;
6959 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
6960 /* We have a switch spec. */
6961 p = validate_switches (p + 1);
6965 validate_all_switches (void)
6967 struct compiler *comp;
6968 struct spec_list *spec;
6970 for (comp = compilers; comp->spec; comp++)
6971 validate_switches_from_spec (comp->spec);
6973 /* Look through the linked list of specs read from the specs file. */
6974 for (spec = specs; spec; spec = spec->next)
6975 validate_switches_from_spec (*spec->ptr_spec);
6977 validate_switches_from_spec (link_command_spec);
6980 /* Look at the switch-name that comes after START
6981 and mark as valid all supplied switches that match it. */
6984 validate_switches (const char *start)
6986 const char *p = start;
6990 bool suffix = false;
6991 bool starred = false;
6993 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7002 if (*p == '.' || *p == ',')
7006 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
7007 || *p == ',' || *p == '.' || *p == '@')
7012 starred = true, p++;
7018 /* Mark all matching switches as valid. */
7019 for (i = 0; i < n_switches; i++)
7020 if (!strncmp (switches[i].part1, atom, len)
7021 && (starred || switches[i].part1[len] == 0))
7022 switches[i].validated = 1;
7026 if (*p && (p[-1] == '|' || p[-1] == '&'))
7029 if (*p && p[-1] == ':')
7031 while (*p && *p != ';' && *p != '}')
7036 if (*p == '{' || *p == '<')
7037 p = validate_switches (p+1);
7038 else if (p[0] == 'W' && p[1] == '{')
7039 p = validate_switches (p+2);
7046 if (*p && p[-1] == ';')
7060 static struct mdswitchstr *mdswitches;
7061 static int n_mdswitches;
7063 /* Check whether a particular argument was used. The first time we
7064 canonicalize the switches to keep only the ones we care about. */
7067 used_arg (const char *p, int len)
7072 const char *replace;
7077 static struct mswitchstr *mswitches;
7078 static int n_mswitches;
7083 struct mswitchstr *matches;
7087 /* Break multilib_matches into the component strings of string
7088 and replacement string. */
7089 for (q = multilib_matches; *q != '\0'; q++)
7094 = (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
7096 q = multilib_matches;
7105 fatal_error ("multilib spec %qs is invalid",
7110 matches[i].len = q - matches[i].str;
7112 matches[i].replace = ++q;
7113 while (*q != ';' && *q != '\0')
7116 goto invalid_matches;
7119 matches[i].rep_len = q - matches[i].replace;
7125 /* Now build a list of the replacement string for switches that we care
7126 about. Make sure we allocate at least one entry. This prevents
7127 xmalloc from calling fatal, and prevents us from re-executing this
7130 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1));
7131 for (i = 0; i < n_switches; i++)
7132 if ((switches[i].live_cond & SWITCH_IGNORE) == 0)
7134 int xlen = strlen (switches[i].part1);
7135 for (j = 0; j < cnt; j++)
7136 if (xlen == matches[j].len
7137 && ! strncmp (switches[i].part1, matches[j].str, xlen))
7139 mswitches[n_mswitches].str = matches[j].replace;
7140 mswitches[n_mswitches].len = matches[j].rep_len;
7141 mswitches[n_mswitches].replace = (char *) 0;
7142 mswitches[n_mswitches].rep_len = 0;
7148 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7149 on the command line nor any options mutually incompatible with
7151 for (i = 0; i < n_mdswitches; i++)
7155 for (q = multilib_options; *q != '\0'; q++)
7161 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
7162 || strchr (" /", q[mdswitches[i].len]) == NULL)
7164 while (*q != ' ' && *q != '/' && *q != '\0')
7171 if (*q != ' ' && *q != '\0')
7173 while (*r != ' ' && *r != '\0')
7176 while (*q != ' ' && *q != '/' && *q != '\0')
7179 if (used_arg (r, q - r))
7184 mswitches[n_mswitches].str = mdswitches[i].str;
7185 mswitches[n_mswitches].len = mdswitches[i].len;
7186 mswitches[n_mswitches].replace = (char *) 0;
7187 mswitches[n_mswitches].rep_len = 0;
7200 for (i = 0; i < n_mswitches; i++)
7201 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
7208 default_arg (const char *p, int len)
7212 for (i = 0; i < n_mdswitches; i++)
7213 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
7219 /* Work out the subdirectory to use based on the options. The format of
7220 multilib_select is a list of elements. Each element is a subdirectory
7221 name followed by a list of options followed by a semicolon. The format
7222 of multilib_exclusions is the same, but without the preceding
7223 directory. First gcc will check the exclusions, if none of the options
7224 beginning with an exclamation point are present, and all of the other
7225 options are present, then we will ignore this completely. Passing
7226 that, gcc will consider each multilib_select in turn using the same
7227 rules for matching the options. If a match is found, that subdirectory
7231 set_multilib_dir (void)
7234 unsigned int this_path_len;
7235 const char *this_path, *this_arg;
7236 const char *start, *end;
7238 int ok, ndfltok, first;
7241 start = multilib_defaults;
7242 while (*start == ' ' || *start == '\t')
7244 while (*start != '\0')
7247 while (*start != ' ' && *start != '\t' && *start != '\0')
7249 while (*start == ' ' || *start == '\t')
7257 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches);
7258 for (start = multilib_defaults; *start != '\0'; start = end + 1)
7260 while (*start == ' ' || *start == '\t')
7266 for (end = start + 1;
7267 *end != ' ' && *end != '\t' && *end != '\0'; end++)
7270 obstack_grow (&multilib_obstack, start, end - start);
7271 obstack_1grow (&multilib_obstack, 0);
7272 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *);
7273 mdswitches[i++].len = end - start;
7280 p = multilib_exclusions;
7283 /* Ignore newlines. */
7290 /* Check the arguments. */
7297 fatal_error ("multilib exclusions %qs is invalid",
7298 multilib_exclusions);
7308 while (*p != ' ' && *p != ';')
7311 goto invalid_exclusions;
7315 if (*this_arg != '!')
7323 ok = used_arg (this_arg, p - this_arg);
7338 p = multilib_select;
7341 /* Ignore newlines. */
7348 /* Get the initial path. */
7355 fatal_error ("multilib select %qs is invalid",
7360 this_path_len = p - this_path;
7362 /* Check the arguments. */
7369 goto invalid_select;
7378 while (*p != ' ' && *p != ';')
7381 goto invalid_select;
7385 if (*this_arg != '!')
7393 /* If this is a default argument, we can just ignore it.
7394 This is true even if this_arg begins with '!'. Beginning
7395 with '!' does not mean that this argument is necessarily
7396 inappropriate for this library: it merely means that
7397 there is a more specific library which uses this
7398 argument. If this argument is a default, we need not
7399 consider that more specific library. */
7400 ok = used_arg (this_arg, p - this_arg);
7407 if (default_arg (this_arg, p - this_arg))
7416 if (this_path_len != 1
7417 || this_path[0] != '.')
7419 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1);
7422 strncpy (new_multilib_dir, this_path, this_path_len);
7423 new_multilib_dir[this_path_len] = '\0';
7424 q = strchr (new_multilib_dir, ':');
7427 multilib_dir = new_multilib_dir;
7434 const char *q = this_path, *end = this_path + this_path_len;
7436 while (q < end && *q != ':')
7440 char *new_multilib_os_dir = XNEWVEC (char, end - q);
7441 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
7442 new_multilib_os_dir[end - q - 1] = '\0';
7443 multilib_os_dir = new_multilib_os_dir;
7451 if (multilib_dir == NULL && multilib_os_dir != NULL
7452 && strcmp (multilib_os_dir, ".") == 0)
7454 free (CONST_CAST (char *, multilib_os_dir));
7455 multilib_os_dir = NULL;
7457 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7458 multilib_os_dir = multilib_dir;
7461 /* Print out the multiple library subdirectory selection
7462 information. This prints out a series of lines. Each line looks
7463 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7464 required. Only the desired options are printed out, the negative
7465 matches. The options are print without a leading dash. There are
7466 no spaces to make it easy to use the information in the shell.
7467 Each subdirectory is printed only once. This assumes the ordering
7468 generated by the genmultilib script. Also, we leave out ones that match
7472 print_multilib_info (void)
7474 const char *p = multilib_select;
7475 const char *last_path = 0, *this_path;
7477 unsigned int last_path_len = 0;
7482 /* Ignore newlines. */
7489 /* Get the initial path. */
7496 fatal_error ("multilib select %qs is invalid", multilib_select);
7502 /* When --disable-multilib was used but target defines
7503 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7504 to find multilib_os_dir, so skip them from output. */
7505 if (this_path[0] == '.' && this_path[1] == ':')
7508 /* Check for matches with the multilib_exclusions. We don't bother
7509 with the '!' in either list. If any of the exclusion rules match
7510 all of its options with the select rule, we skip it. */
7512 const char *e = multilib_exclusions;
7513 const char *this_arg;
7518 /* Ignore newlines. */
7525 /* Check the arguments. */
7534 fatal_error ("multilib exclusion %qs is invalid",
7535 multilib_exclusions);
7546 while (*e != ' ' && *e != ';')
7549 goto invalid_exclusion;
7557 int len = e - this_arg;
7560 goto invalid_select;
7564 while (*q != ' ' && *q != ';')
7567 goto invalid_select;
7571 if (! strncmp (arg, this_arg,
7572 (len < q - arg) ? q - arg : len)
7573 || default_arg (this_arg, e - this_arg))
7603 /* If this is a duplicate, skip it. */
7604 skip = (last_path != 0
7605 && (unsigned int) (p - this_path) == last_path_len
7606 && ! strncmp (last_path, this_path, last_path_len));
7608 last_path = this_path;
7609 last_path_len = p - this_path;
7612 /* If this directory requires any default arguments, we can skip
7613 it. We will already have printed a directory identical to
7614 this one which does not require that default argument. */
7625 goto invalid_select;
7632 while (*q != ' ' && *q != ';')
7635 goto invalid_select;
7640 && default_arg (arg, q - arg))
7655 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7666 goto invalid_select;
7674 use_arg = *p != '!';
7679 while (*p != ' ' && *p != ';')
7682 goto invalid_select;
7694 /* If there are extra options, print them now. */
7695 if (multilib_extra && *multilib_extra)
7697 int print_at = TRUE;
7700 for (q = multilib_extra; *q != '\0'; q++)
7721 /* getenv built-in spec function.
7723 Returns the value of the environment variable given by its first
7724 argument, concatenated with the second argument. If the
7725 environment variable is not defined, a fatal error is issued. */
7728 getenv_spec_function (int argc, const char **argv)
7738 value = getenv (argv[0]);
7740 fatal_error ("environment variable %qs not defined", argv[0]);
7742 /* We have to escape every character of the environment variable so
7743 they are not interpreted as active spec characters. A
7744 particularly painful case is when we are reading a variable
7745 holding a windows path complete with \ separators. */
7746 len = strlen (value) * 2 + strlen (argv[1]) + 1;
7747 result = XNEWVAR (char, len);
7748 for (ptr = result; *value; ptr += 2)
7754 strcpy (ptr, argv[1]);
7759 /* if-exists built-in spec function.
7761 Checks to see if the file specified by the absolute pathname in
7762 ARGS exists. Returns that pathname if found.
7764 The usual use for this function is to check for a library file
7765 (whose name has been expanded with %s). */
7768 if_exists_spec_function (int argc, const char **argv)
7770 /* Must have only one argument. */
7771 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7777 /* if-exists-else built-in spec function.
7779 This is like if-exists, but takes an additional argument which
7780 is returned if the first argument does not exist. */
7783 if_exists_else_spec_function (int argc, const char **argv)
7785 /* Must have exactly two arguments. */
7789 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7795 /* replace-outfile built-in spec function.
7797 This looks for the first argument in the outfiles array's name and
7798 replaces it with the second argument. */
7801 replace_outfile_spec_function (int argc, const char **argv)
7804 /* Must have exactly two arguments. */
7808 for (i = 0; i < n_infiles; i++)
7810 if (outfiles[i] && !strcmp (outfiles[i], argv[0]))
7811 outfiles[i] = xstrdup (argv[1]);
7816 /* remove-outfile built-in spec function.
7818 * This looks for the first argument in the outfiles array's name and
7822 remove_outfile_spec_function (int argc, const char **argv)
7825 /* Must have exactly one argument. */
7829 for (i = 0; i < n_infiles; i++)
7831 if (outfiles[i] && !strcmp (outfiles[i], argv[0]))
7837 /* Given two version numbers, compares the two numbers.
7838 A version number must match the regular expression
7839 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
7842 compare_version_strings (const char *v1, const char *v2)
7847 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
7848 REG_EXTENDED | REG_NOSUB) != 0)
7850 rresult = regexec (&r, v1, 0, NULL, 0);
7851 if (rresult == REG_NOMATCH)
7852 fatal_error ("invalid version number %qs", v1);
7853 else if (rresult != 0)
7855 rresult = regexec (&r, v2, 0, NULL, 0);
7856 if (rresult == REG_NOMATCH)
7857 fatal_error ("invalid version number %qs", v2);
7858 else if (rresult != 0)
7861 return strverscmp (v1, v2);
7865 /* version_compare built-in spec function.
7867 This takes an argument of the following form:
7869 <comparison-op> <arg1> [<arg2>] <switch> <result>
7871 and produces "result" if the comparison evaluates to true,
7872 and nothing if it doesn't.
7874 The supported <comparison-op> values are:
7876 >= true if switch is a later (or same) version than arg1
7878 < true if switch is an earlier version than arg1
7880 >< true if switch is arg1 or later, and earlier than arg2
7881 <> true if switch is earlier than arg1 or is arg2 or later
7883 If the switch is not present, the condition is false unless
7884 the first character of the <comparison-op> is '!'.
7887 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
7888 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
7891 version_compare_spec_function (int argc, const char **argv)
7895 const char *switch_value = NULL;
7900 fatal_error ("too few arguments to %%:version-compare");
7901 if (argv[0][0] == '\0')
7903 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!')
7905 if (argc != nargs + 3)
7906 fatal_error ("too many arguments to %%:version-compare");
7908 switch_len = strlen (argv[nargs + 1]);
7909 for (i = 0; i < n_switches; i++)
7910 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len)
7911 && check_live_switch (i, switch_len))
7912 switch_value = switches[i].part1 + switch_len;
7914 if (switch_value == NULL)
7918 comp1 = compare_version_strings (switch_value, argv[1]);
7920 comp2 = compare_version_strings (switch_value, argv[2]);
7922 comp2 = -1; /* This value unused. */
7925 switch (argv[0][0] << 8 | argv[0][1])
7927 case '>' << 8 | '=':
7928 result = comp1 >= 0;
7930 case '!' << 8 | '<':
7931 result = comp1 >= 0 || switch_value == NULL;
7936 case '!' << 8 | '>':
7937 result = comp1 < 0 || switch_value == NULL;
7939 case '>' << 8 | '<':
7940 result = comp1 >= 0 && comp2 < 0;
7942 case '<' << 8 | '>':
7943 result = comp1 < 0 || comp2 >= 0;
7947 fatal_error ("unknown operator %qs in %%:version-compare", argv[0]);
7952 return argv[nargs + 2];
7955 /* %:include builtin spec function. This differs from %include in that it
7956 can be nested inside a spec, and thus be conditionalized. It takes
7957 one argument, the filename, and looks for it in the startfile path.
7958 The result is always NULL, i.e. an empty expansion. */
7961 include_spec_function (int argc, const char **argv)
7968 file = find_a_file (&startfile_prefixes, argv[0], R_OK, true);
7969 read_specs (file ? file : argv[0], FALSE);
7974 /* %:find-file spec function. This function replaces its argument by
7975 the file found thru find_file, that is the -print-file-name gcc
7978 find_file_spec_function (int argc, const char **argv)
7985 file = find_file (argv[0]);
7990 /* %:find-plugindir spec function. This function replaces its argument
7991 by the -iplugindir=<dir> option. `dir' is found thru find_file, that
7992 is the -print-file-name gcc program option. */
7994 find_plugindir_spec_function (int argc, const char **argv ATTRIBUTE_UNUSED)
8001 option = concat ("-iplugindir=", find_file ("plugin"), NULL);
8006 /* %:print-asm-header spec function. Print a banner to say that the
8007 following output is from the assembler. */
8010 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED,
8011 const char **argv ATTRIBUTE_UNUSED)
8013 printf (_("Assembler options\n=================\n\n"));
8014 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
8019 /* Compute a timestamp to initialize flag_random_seed. */
8022 get_local_tick (void)
8026 /* Get some more or less random data. */
8027 #ifdef HAVE_GETTIMEOFDAY
8031 gettimeofday (&tv, NULL);
8032 ret = tv.tv_sec * 1000 + tv.tv_usec / 1000;
8036 time_t now = time (NULL);
8038 if (now != (time_t)-1)
8039 ret = (unsigned) now;
8046 /* %:compare-debug-dump-opt spec function. Save the last argument,
8047 expected to be the last -fdump-final-insns option, or generate a
8051 compare_debug_dump_opt_spec_function (int arg,
8052 const char **argv ATTRIBUTE_UNUSED)
8057 static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3];
8060 fatal_error ("too many arguments to %%:compare-debug-dump-opt");
8062 do_spec_2 ("%{fdump-final-insns=*:%*}");
8063 do_spec_1 (" ", 0, NULL);
8065 if (VEC_length (const_char_p, argbuf) > 0
8066 && strcmp (argv[VEC_length (const_char_p, argbuf) - 1], "."))
8071 name = xstrdup (argv[VEC_length (const_char_p, argbuf) - 1]);
8076 const char *ext = NULL;
8078 if (VEC_length (const_char_p, argbuf) > 0)
8080 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
8083 else if (!compare_debug)
8086 do_spec_2 ("%g.gkd");
8088 do_spec_1 (" ", 0, NULL);
8090 gcc_assert (VEC_length (const_char_p, argbuf) > 0);
8092 name = concat (VEC_last (const_char_p, argbuf), ext, NULL);
8094 ret = concat ("-fdump-final-insns=", name, NULL);
8097 which = compare_debug < 0;
8098 debug_check_temp_file[which] = name;
8102 unsigned HOST_WIDE_INT value = get_local_tick () ^ getpid ();
8104 sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value);
8108 ret = concat ("%{!frandom-seed=*:-frandom-seed=", random_seed, "} ",
8117 static const char *debug_auxbase_opt;
8119 /* %:compare-debug-self-opt spec function. Expands to the options
8120 that are to be passed in the second compilation of
8124 compare_debug_self_opt_spec_function (int arg,
8125 const char **argv ATTRIBUTE_UNUSED)
8128 fatal_error ("too many arguments to %%:compare-debug-self-opt");
8130 if (compare_debug >= 0)
8133 do_spec_2 ("%{c|S:%{o*:%*}}");
8134 do_spec_1 (" ", 0, NULL);
8136 if (VEC_length (const_char_p, argbuf) > 0)
8137 debug_auxbase_opt = concat ("-auxbase-strip ",
8138 VEC_last (const_char_p, argbuf),
8141 debug_auxbase_opt = NULL;
8144 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
8145 %<fdump-final-insns=* -w -S -o %j \
8146 %{!fcompare-debug-second:-fcompare-debug-second} \
8147 ", compare_debug_opt, NULL);
8150 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
8151 options that are to be passed in the second compilation of
8152 compare-debug. It expects, as an argument, the basename of the
8153 current input file name, with the .gk suffix appended to it. */
8156 compare_debug_auxbase_opt_spec_function (int arg,
8163 fatal_error ("too few arguments to %%:compare-debug-auxbase-opt");
8166 fatal_error ("too many arguments to %%:compare-debug-auxbase-opt");
8168 if (compare_debug >= 0)
8171 len = strlen (argv[0]);
8172 if (len < 3 || strcmp (argv[0] + len - 3, ".gk") != 0)
8173 fatal_error ("argument to %%:compare-debug-auxbase-opt "
8174 "does not end in .gk");
8176 if (debug_auxbase_opt)
8177 return debug_auxbase_opt;
8179 #define OPT "-auxbase "
8182 name = (char*) xmalloc (sizeof (OPT) + len);
8183 memcpy (name, OPT, sizeof (OPT) - 1);
8184 memcpy (name + sizeof (OPT) - 1, argv[0], len);
8185 name[sizeof (OPT) - 1 + len] = '\0';