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 */
43 #include "diagnostic.h"
48 /* By default there is no special suffix for target executables. */
49 /* FIXME: when autoconf is fixed, remove the host check - dj */
50 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
51 #define HAVE_TARGET_EXECUTABLE_SUFFIX
54 /* By default there is no special suffix for host executables. */
55 #ifdef HOST_EXECUTABLE_SUFFIX
56 #define HAVE_HOST_EXECUTABLE_SUFFIX
58 #define HOST_EXECUTABLE_SUFFIX ""
61 /* By default, the suffix for target object files is ".o". */
62 #ifdef TARGET_OBJECT_SUFFIX
63 #define HAVE_TARGET_OBJECT_SUFFIX
65 #define TARGET_OBJECT_SUFFIX ".o"
68 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
70 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
71 #ifndef LIBRARY_PATH_ENV
72 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
75 /* If a stage of compilation returns an exit status >= 1,
76 compilation of that file ceases. */
78 #define MIN_FATAL_STATUS 1
80 /* Flag set by cppspec.c to 1. */
83 /* Flag set to nonzero if an @file argument has been supplied to gcc. */
84 static bool at_file_supplied;
86 /* Definition of string containing the arguments given to configure. */
87 #include "configargs.h"
89 /* Flag saying to print the command line options understood by gcc and its
92 static int print_help_list;
94 /* Flag saying to print the version of gcc and its sub-processes. */
96 static int print_version;
98 /* Flag indicating whether we should ONLY print the command and
99 arguments (like verbose_flag) without executing the command.
100 Displayed arguments are quoted so that the generated command
101 line is suitable for execution. This is intended for use in
102 shell scripts to capture the driver-generated command line. */
103 static int verbose_only_flag;
105 /* Flag indicating how to print command line options of sub-processes. */
107 static int print_subprocess_help;
109 /* Whether we should report subprocess execution times to a file. */
111 FILE *report_times_to_file = NULL;
113 /* Nonzero means place this string before uses of /, so that include
114 and library files can be found in an alternate location. */
116 #ifdef TARGET_SYSTEM_ROOT
117 static const char *target_system_root = TARGET_SYSTEM_ROOT;
119 static const char *target_system_root = 0;
122 /* Nonzero means pass the updated target_system_root to the compiler. */
124 static int target_system_root_changed;
126 /* Nonzero means append this string to target_system_root. */
128 static const char *target_sysroot_suffix = 0;
130 /* Nonzero means append this string to target_system_root for headers. */
132 static const char *target_sysroot_hdrs_suffix = 0;
134 /* Nonzero means write "temp" files in source directory
135 and use the source file's name in them, and don't delete them. */
137 static enum save_temps {
138 SAVE_TEMPS_NONE, /* no -save-temps */
139 SAVE_TEMPS_CWD, /* -save-temps in current directory */
140 SAVE_TEMPS_OBJ /* -save-temps in object directory */
143 /* Output file to use to get the object directory for -save-temps=obj */
144 static char *save_temps_prefix = 0;
145 static size_t save_temps_length = 0;
147 /* The compiler version. */
149 static const char *compiler_version;
151 /* The target version. */
153 static const char *const spec_version = DEFAULT_TARGET_VERSION;
155 /* The target machine. */
157 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
159 /* Nonzero if cross-compiling.
160 When -b is used, the value comes from the `specs' file. */
162 #ifdef CROSS_DIRECTORY_STRUCTURE
163 static const char *cross_compile = "1";
165 static const char *cross_compile = "0";
168 /* Greatest exit code of sub-processes that has been encountered up to
170 static int greatest_status = 1;
172 /* This is the obstack which we use to allocate many strings. */
174 static struct obstack obstack;
176 /* This is the obstack to build an environment variable to pass to
177 collect2 that describes all of the relevant switches of what to
178 pass the compiler in building the list of pointers to constructors
181 static struct obstack collect_obstack;
183 /* Forward declaration for prototypes. */
187 static void init_spec (void);
188 static void store_arg (const char *, int, int);
189 static void insert_wrapper (const char *);
190 static char *load_specs (const char *);
191 static void read_specs (const char *, int);
192 static void set_spec (const char *, const char *);
193 static struct compiler *lookup_compiler (const char *, size_t, const char *);
194 static char *build_search_list (const struct path_prefix *, const char *,
196 static void xputenv (const char *);
197 static void putenv_from_prefixes (const struct path_prefix *, const char *,
199 static int access_check (const char *, int);
200 static char *find_a_file (const struct path_prefix *, const char *, int, bool);
201 static void add_prefix (struct path_prefix *, const char *, const char *,
203 static void add_sysrooted_prefix (struct path_prefix *, const char *,
204 const char *, int, int, int);
205 static char *skip_whitespace (char *);
206 static void delete_if_ordinary (const char *);
207 static void delete_temp_files (void);
208 static void delete_failure_queue (void);
209 static void clear_failure_queue (void);
210 static int check_live_switch (int, int);
211 static const char *handle_braces (const char *);
212 static inline bool input_suffix_matches (const char *, const char *);
213 static inline bool switch_matches (const char *, const char *, int);
214 static inline void mark_matching_switches (const char *, const char *, int);
215 static inline void process_marked_switches (void);
216 static const char *process_brace_body (const char *, const char *, const char *, int, int);
217 static const struct spec_function *lookup_spec_function (const char *);
218 static const char *eval_spec_function (const char *, const char *);
219 static const char *handle_spec_function (const char *);
220 static char *save_string (const char *, int);
221 static void set_collect_gcc_options (void);
222 static int do_spec_1 (const char *, int, const char *);
223 static int do_spec_2 (const char *);
224 static void do_option_spec (const char *, const char *);
225 static void do_self_spec (const char *);
226 static const char *find_file (const char *);
227 static int is_directory (const char *, bool);
228 static const char *validate_switches (const char *);
229 static void validate_all_switches (void);
230 static inline void validate_switches_from_spec (const char *);
231 static void give_switch (int, int);
232 static int used_arg (const char *, int);
233 static int default_arg (const char *, int);
234 static void set_multilib_dir (void);
235 static void print_multilib_info (void);
236 static void perror_with_name (const char *);
237 static void display_help (void);
238 static void add_preprocessor_option (const char *, int);
239 static void add_assembler_option (const char *, int);
240 static void add_linker_option (const char *, int);
241 static void process_command (unsigned int, struct cl_decoded_option *);
242 static int execute (void);
243 static void alloc_args (void);
244 static void clear_args (void);
245 static void fatal_signal (int);
246 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
247 static void init_gcc_specs (struct obstack *, const char *, const char *,
250 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
251 static const char *convert_filename (const char *, int, int);
254 static const char *getenv_spec_function (int, const char **);
255 static const char *if_exists_spec_function (int, const char **);
256 static const char *if_exists_else_spec_function (int, const char **);
257 static const char *replace_outfile_spec_function (int, const char **);
258 static const char *remove_outfile_spec_function (int, const char **);
259 static const char *version_compare_spec_function (int, const char **);
260 static const char *include_spec_function (int, const char **);
261 static const char *find_file_spec_function (int, const char **);
262 static const char *find_plugindir_spec_function (int, const char **);
263 static const char *print_asm_header_spec_function (int, const char **);
264 static const char *compare_debug_dump_opt_spec_function (int, const char **);
265 static const char *compare_debug_self_opt_spec_function (int, const char **);
266 static const char *compare_debug_auxbase_opt_spec_function (int, const char **);
267 static const char *pass_through_libs_spec_func (int, const char **);
269 /* The Specs Language
271 Specs are strings containing lines, each of which (if not blank)
272 is made up of a program name, and arguments separated by spaces.
273 The program name must be exact and start from root, since no path
274 is searched and it is unreliable to depend on the current working directory.
275 Redirection of input or output is not supported; the subprograms must
276 accept filenames saying what files to read and write.
278 In addition, the specs can contain %-sequences to substitute variable text
279 or for conditional text. Here is a table of all defined %-sequences.
280 Note that spaces are not generated automatically around the results of
281 expanding these sequences; therefore, you can concatenate them together
282 or with constant text in a single argument.
284 %% substitute one % into the program name or argument.
285 %i substitute the name of the input file being processed.
286 %b substitute the basename of the input file being processed.
287 This is the substring up to (and not including) the last period
288 and not including the directory unless -save-temps was specified
289 to put temporaries in a different location.
290 %B same as %b, but include the file suffix (text after the last period).
292 substitute a file name that has suffix SUFFIX and is chosen
293 once per compilation, and mark the argument a la %d. To reduce
294 exposure to denial-of-service attacks, the file name is now
295 chosen in a way that is hard to predict even when previously
296 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
297 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
298 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
299 had been pre-processed. Previously, %g was simply substituted
300 with a file name chosen once per compilation, without regard
301 to any appended suffix (which was therefore treated just like
302 ordinary text), making such attacks more likely to succeed.
304 like %g, but if -pipe is in effect, expands simply to "-".
306 like %g, but if -pipe is in effect, expands to nothing. (We have both
307 %| and %m to accommodate differences between system assemblers; see
308 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
310 like %g, but generates a new temporary file name even if %uSUFFIX
313 substitutes the last file name generated with %uSUFFIX, generating a
314 new one if there is no such last file name. In the absence of any
315 %uSUFFIX, this is just like %gSUFFIX, except they don't share
316 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
317 would involve the generation of two distinct file names, one
318 for each `%g.s' and another for each `%U.s'. Previously, %U was
319 simply substituted with a file name chosen for the previous %u,
320 without regard to any appended suffix.
322 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
323 writable, and if save-temps is off; otherwise, substitute the name
324 of a temporary file, just like %u. This temporary file is not
325 meant for communication between processes, but rather as a junk
328 substitutes .SUFFIX for the suffixes of a matched switch's args when
329 it is subsequently output with %*. SUFFIX is terminated by the next
331 %d marks the argument containing or following the %d as a
332 temporary file name, so that that file will be deleted if GCC exits
333 successfully. Unlike %g, this contributes no text to the argument.
334 %w marks the argument containing or following the %w as the
335 "output file" of this compilation. This puts the argument
336 into the sequence of arguments that %o will substitute later.
337 %V indicates that this compilation produces no "output file".
339 like %{...} but mark last argument supplied within
340 as a file to be deleted on failure.
341 %o substitutes the names of all the output files, with spaces
342 automatically placed around them. You should write spaces
343 around the %o as well or the results are undefined.
344 %o is for use in the specs for running the linker.
345 Input files whose names have no recognized suffix are not compiled
346 at all, but they are included among the output files, so they will
348 %O substitutes the suffix for object files. Note that this is
349 handled specially when it immediately follows %g, %u, or %U
350 (with or without a suffix argument) because of the need for
351 those to form complete file names. The handling is such that
352 %O is treated exactly as if it had already been substituted,
353 except that %g, %u, and %U do not currently support additional
354 SUFFIX characters following %O as they would following, for
356 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
357 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
358 and -B options) and -imultilib as necessary.
359 %s current argument is the name of a library or startup file of some sort.
360 Search for that file in a standard list of directories
361 and substitute the full name found.
362 %eSTR Print STR as an error message. STR is terminated by a newline.
363 Use this when inconsistent options are detected.
364 %nSTR Print STR as a notice. STR is terminated by a newline.
365 %x{OPTION} Accumulate an option for %X.
366 %X Output the accumulated linker options specified by compilations.
367 %Y Output the accumulated assembler options specified by compilations.
368 %Z Output the accumulated preprocessor options specified by compilations.
369 %a process ASM_SPEC as a spec.
370 This allows config.h to specify part of the spec for running as.
371 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
372 used here. This can be used to run a post-processor after the
373 assembler has done its job.
374 %D Dump out a -L option for each directory in startfile_prefixes.
375 If multilib_dir is set, extra entries are generated with it affixed.
376 %l process LINK_SPEC as a spec.
377 %L process LIB_SPEC as a spec.
378 %G process LIBGCC_SPEC as a spec.
379 %R Output the concatenation of target_system_root and
380 target_sysroot_suffix.
381 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
382 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
383 %C process CPP_SPEC as a spec.
384 %1 process CC1_SPEC as a spec.
385 %2 process CC1PLUS_SPEC as a spec.
386 %* substitute the variable part of a matched option. (See below.)
387 Note that each comma in the substituted string is replaced by
389 %<S remove all occurrences of -S from the command line.
390 Note - this command is position dependent. % commands in the
391 spec string before this one will see -S, % commands in the
392 spec string after this one will not.
393 %>S Similar to "%<S", but keep it in the GCC command line.
394 %<S* remove all occurrences of all switches beginning with -S from the
397 Call the named function FUNCTION, passing it ARGS. ARGS is
398 first processed as a nested spec string, then split into an
399 argument vector in the usual fashion. The function returns
400 a string which is processed as if it had appeared literally
401 as part of the current spec.
402 %{S} substitutes the -S switch, if that switch was given to GCC.
403 If that switch was not specified, this substitutes nothing.
404 Here S is a metasyntactic variable.
405 %{S*} substitutes all the switches specified to GCC whose names start
406 with -S. This is used for -o, -I, etc; switches that take
407 arguments. GCC considers `-o foo' as being one switch whose
408 name starts with `o'. %{o*} would substitute this text,
409 including the space; thus, two arguments would be generated.
410 %{S*&T*} likewise, but preserve order of S and T options (the order
411 of S and T in the spec is not significant). Can be any number
412 of ampersand-separated variables; for each the wild card is
413 optional. Useful for CPP as %{D*&U*&A*}.
415 %{S:X} substitutes X, if the -S switch was given to GCC.
416 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
417 %{S*:X} substitutes X if one or more switches whose names start
418 with -S was given to GCC. Normally X is substituted only
419 once, no matter how many such switches appeared. However,
420 if %* appears somewhere in X, then X will be substituted
421 once for each matching switch, with the %* replaced by the
422 part of that switch that matched the '*'.
423 %{.S:X} substitutes X, if processing a file with suffix S.
424 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
425 %{,S:X} substitutes X, if processing a file which will use spec S.
426 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
428 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
429 combined with '!', '.', ',', and '*' as above binding stronger
431 If %* appears in X, all of the alternatives must be starred, and
432 only the first matching alternative is substituted.
433 %{S:X; if S was given to GCC, substitutes X;
434 T:Y; else if T was given to GCC, substitutes Y;
435 :D} else substitutes D. There can be as many clauses as you need.
436 This may be combined with '.', '!', ',', '|', and '*' as above.
438 %(Spec) processes a specification defined in a specs file as *Spec:
439 %[Spec] as above, but put __ around -D arguments
441 The conditional text X in a %{S:X} or similar construct may contain
442 other nested % constructs or spaces, or even newlines. They are
443 processed as usual, as described above. Trailing white space in X is
444 ignored. White space may also appear anywhere on the left side of the
445 colon in these constructs, except between . or * and the corresponding
448 The -O, -f, -m, and -W switches are handled specifically in these
449 constructs. If another value of -O or the negated form of a -f, -m, or
450 -W switch is found later in the command line, the earlier switch
451 value is ignored, except with {S*} where S is just one letter; this
452 passes all matching options.
454 The character | at the beginning of the predicate text is used to indicate
455 that a command should be piped to the following command, but only if -pipe
458 Note that it is built into GCC which switches take arguments and which
459 do not. You might think it would be useful to generalize this to
460 allow each compiler's spec to say which switches take arguments. But
461 this cannot be done in a consistent fashion. GCC cannot even decide
462 which input files have been specified without knowing which switches
463 take arguments, and it must know which input files to compile in order
464 to tell which compilers to run.
466 GCC also knows implicitly that arguments starting in `-l' are to be
467 treated as compiler output files, and passed to the linker in their
468 proper position among the other output files. */
470 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
472 /* config.h can define ASM_SPEC to provide extra args to the assembler
473 or extra switch-translations. */
478 /* config.h can define ASM_FINAL_SPEC to run a post processor after
479 the assembler has run. */
480 #ifndef ASM_FINAL_SPEC
481 #define ASM_FINAL_SPEC ""
484 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
485 or extra switch-translations. */
490 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
491 or extra switch-translations. */
496 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
497 or extra switch-translations. */
499 #define CC1PLUS_SPEC ""
502 /* config.h can define LINK_SPEC to provide extra args to the linker
503 or extra switch-translations. */
508 /* config.h can define LIB_SPEC to override the default libraries. */
510 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
515 /* XXX: valid only for GNU ld */
516 /* XXX: should exactly match hooks provided by libmudflap.a */
517 #define MFWRAP_SPEC " %{static: %{fmudflap|fmudflapth: \
518 --wrap=malloc --wrap=free --wrap=calloc --wrap=realloc\
519 --wrap=mmap --wrap=munmap --wrap=alloca\
520 } %{fmudflapth: --wrap=pthread_create\
521 }} %{fmudflap|fmudflapth: --wrap=main}"
524 #define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}"
527 /* When using -fsplit-stack we need to wrap pthread_create, in order
528 to initialize the stack guard. We always use wrapping, rather than
529 shared library ordering, and we keep the wrapper function in
530 libgcc. This is not yet a real spec, though it could become one;
531 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping
532 only works with GNU ld and gold. FIXME: This is incompatible with
533 -fmudflap when linking statically, which wants to do its own
535 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}"
537 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
540 #if defined(REAL_LIBGCC_SPEC)
541 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
542 #elif defined(LINK_LIBGCC_SPECIAL_1)
543 /* Have gcc do the search for libgcc.a. */
544 #define LIBGCC_SPEC "libgcc.a%s"
546 #define LIBGCC_SPEC "-lgcc"
550 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
551 #ifndef STARTFILE_SPEC
552 #define STARTFILE_SPEC \
553 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
556 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
558 #define ENDFILE_SPEC ""
562 #define LINKER_NAME "collect2"
565 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
566 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
571 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
573 #ifndef ASM_DEBUG_SPEC
574 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
575 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
576 # define ASM_DEBUG_SPEC \
577 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
578 ? "%{!g0:%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}}" ASM_MAP \
579 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
581 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
582 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
584 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
585 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
589 #ifndef ASM_DEBUG_SPEC
590 # define ASM_DEBUG_SPEC ""
593 /* Here is the spec for running the linker, after compiling all files. */
595 /* This is overridable by the target in case they need to specify the
596 -lgcc and -lc order specially, yet not require them to override all
597 of LINK_COMMAND_SPEC. */
598 #ifndef LINK_GCC_C_SEQUENCE_SPEC
599 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
602 #ifndef LINK_SSP_SPEC
603 #ifdef TARGET_LIBC_PROVIDES_SSP
604 #define LINK_SSP_SPEC "%{fstack-protector:}"
606 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}"
610 #ifndef LINK_PIE_SPEC
612 #define LINK_PIE_SPEC "%{pie:-pie} "
614 #define LINK_PIE_SPEC "%{pie:} "
618 #ifndef LINK_BUILDID_SPEC
619 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
620 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
624 /* Conditional to test whether the LTO plugin is used or not.
625 FIXME: For slim LTO we will need to enable plugin unconditionally. This
626 still cause problems with PLUGIN_LD != LD and when plugin is built but
627 not useable. For GCC 4.6 we don't support slim LTO and thus we can enable
628 plugin only when LTO is enabled. We still honor explicit
629 -fuse-linker-plugin if the linker used understands -plugin. */
631 /* The linker has some plugin support. */
632 #if HAVE_LTO_PLUGIN > 0
633 /* The linker used has full plugin support, use LTO plugin by default. */
634 #if HAVE_LTO_PLUGIN == 2
635 #define PLUGIN_COND "!fno-use-linker-plugin:%{flto|flto=*|fuse-linker-plugin"
636 #define PLUGIN_COND_CLOSE "}"
638 /* The linker used has limited plugin support, use LTO plugin with explicit
639 -fuse-linker-plugin. */
640 #define PLUGIN_COND "fuse-linker-plugin"
641 #define PLUGIN_COND_CLOSE ""
643 #define LINK_PLUGIN_SPEC \
645 -plugin %(linker_plugin_file) \
646 -plugin-opt=%(lto_wrapper) \
647 -plugin-opt=-fresolution=%u.res \
648 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
651 /* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */
652 #define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\
653 %e-fuse-linker-plugin is not supported in this configuration}"
657 /* -u* was put back because both BSD and SysV seem to support it. */
658 /* %{static:} simply prevents an error message if the target machine
659 doesn't handle -static. */
660 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
661 scripts which exist in user specified directories, or in standard
663 /* We pass any -flto flags on to the linker, which is expected
664 to understand them. In practice, this means it had better be collect2. */
665 /* %{e*} includes -export-dynamic; see comment in common.opt. */
666 #ifndef LINK_COMMAND_SPEC
667 #define LINK_COMMAND_SPEC "\
668 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
671 "%{flto|flto=*:%<fcompare-debug*} \
672 %{flto} %{flto=*} %l " LINK_PIE_SPEC \
673 "%X %{o*} %{e*} %{N} %{n} %{r}\
674 %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}}\
675 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
676 %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
677 %(mflib) " STACK_SPLIT_SPEC "\
678 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov}\
679 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
680 %{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}"
683 #ifndef LINK_LIBGCC_SPEC
684 /* Generate -L options for startfile prefix list. */
685 # define LINK_LIBGCC_SPEC "%D"
688 #ifndef STARTFILE_PREFIX_SPEC
689 # define STARTFILE_PREFIX_SPEC ""
693 # define SYSROOT_SPEC "--sysroot=%R"
696 #ifndef SYSROOT_SUFFIX_SPEC
697 # define SYSROOT_SUFFIX_SPEC ""
700 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
701 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
704 static const char *asm_debug;
705 static const char *cpp_spec = CPP_SPEC;
706 static const char *cc1_spec = CC1_SPEC;
707 static const char *cc1plus_spec = CC1PLUS_SPEC;
708 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
709 static const char *link_ssp_spec = LINK_SSP_SPEC;
710 static const char *asm_spec = ASM_SPEC;
711 static const char *asm_final_spec = ASM_FINAL_SPEC;
712 static const char *link_spec = LINK_SPEC;
713 static const char *lib_spec = LIB_SPEC;
714 static const char *mfwrap_spec = MFWRAP_SPEC;
715 static const char *mflib_spec = MFLIB_SPEC;
716 static const char *link_gomp_spec = "";
717 static const char *libgcc_spec = LIBGCC_SPEC;
718 static const char *endfile_spec = ENDFILE_SPEC;
719 static const char *startfile_spec = STARTFILE_SPEC;
720 static const char *linker_name_spec = LINKER_NAME;
721 static const char *linker_plugin_file_spec = "";
722 static const char *lto_wrapper_spec = "";
723 static const char *lto_gcc_spec = "";
724 static const char *link_command_spec = LINK_COMMAND_SPEC;
725 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
726 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
727 static const char *sysroot_spec = SYSROOT_SPEC;
728 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
729 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
731 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
732 There should be no need to override these in target dependent files,
733 but we need to copy them to the specs file so that newer versions
734 of the GCC driver can correctly drive older tool chains with the
735 appropriate -B options. */
737 /* When cpplib handles traditional preprocessing, get rid of this, and
738 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
739 that we default the front end language better. */
740 static const char *trad_capable_cpp =
741 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}";
743 /* We don't wrap .d files in %W{} since a missing .d file, and
744 therefore no dependency entry, confuses make into thinking a .o
745 file that happens to exist is up-to-date. */
746 static const char *cpp_unique_options =
747 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
748 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
749 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
750 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
751 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
752 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
753 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
754 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
755 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
756 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
759 /* This contains cpp options which are common with cc1_options and are passed
760 only when preprocessing only to avoid duplication. We pass the cc1 spec
761 options to the preprocessor so that it the cc1 spec may manipulate
762 options used to set target flags. Those special target flags settings may
763 in turn cause preprocessor symbols to be defined specially. */
764 static const char *cpp_options =
765 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
766 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
767 %{undef} %{save-temps*:-fpch-preprocess}";
769 /* This contains cpp options which are not passed when the preprocessor
770 output will be used by another program. */
771 static const char *cpp_debug_options = "%{d*}";
773 /* NB: This is shared amongst all front-ends, except for Ada. */
774 static const char *cc1_options =
775 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
776 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
777 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
778 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
779 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
780 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
781 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
782 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\
783 %{-target-help:--target-help}\
784 %{-version:--version}\
785 %{-help=*:--help=%*}\
786 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
787 %{fsyntax-only:-o %j} %{-param*}\
788 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\
789 %{coverage:-fprofile-arcs -ftest-coverage}";
791 static const char *asm_options =
792 "%{-target-help:%:print-asm-header()} "
794 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
795 to the assembler equivalents. */
796 "%{v} %{w:-W} %{I*} "
798 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
800 static const char *invoke_as =
801 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
803 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
804 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
808 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
809 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
813 /* Some compilers have limits on line lengths, and the multilib_select
814 and/or multilib_matches strings can be very long, so we build them at
816 static struct obstack multilib_obstack;
817 static const char *multilib_select;
818 static const char *multilib_matches;
819 static const char *multilib_defaults;
820 static const char *multilib_exclusions;
822 /* Check whether a particular argument is a default argument. */
824 #ifndef MULTILIB_DEFAULTS
825 #define MULTILIB_DEFAULTS { "" }
828 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
830 #ifndef DRIVER_SELF_SPECS
831 #define DRIVER_SELF_SPECS ""
834 /* Adding -fopenmp should imply pthreads. This is particularly important
835 for targets that use different start files and suchlike. */
836 #ifndef GOMP_SELF_SPECS
837 #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}"
840 static const char *const driver_self_specs[] = {
841 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
842 DRIVER_SELF_SPECS, CONFIGURE_SPECS, GOMP_SELF_SPECS
845 #ifndef OPTION_DEFAULT_SPECS
846 #define OPTION_DEFAULT_SPECS { "", "" }
855 static const struct default_spec
856 option_default_specs[] = { OPTION_DEFAULT_SPECS };
860 struct user_specs *next;
861 const char *filename;
864 static struct user_specs *user_specs_head, *user_specs_tail;
867 /* Record the mapping from file suffixes for compilation specs. */
871 const char *suffix; /* Use this compiler for input files
872 whose names end in this suffix. */
874 const char *spec; /* To use this compiler, run this spec. */
876 const char *cpp_spec; /* If non-NULL, substitute this spec
877 for `%C', rather than the usual
879 const int combinable; /* If nonzero, compiler can deal with
880 multiple source files at once (IMA). */
881 const int needs_preprocessing; /* If nonzero, source files need to
882 be run through a preprocessor. */
885 /* Pointer to a vector of `struct compiler' that gives the spec for
886 compiling a file, based on its suffix.
887 A file that does not end in any of these suffixes will be passed
888 unchanged to the loader and nothing else will be done to it.
890 An entry containing two 0s is used to terminate the vector.
892 If multiple entries match a file, the last matching one is used. */
894 static struct compiler *compilers;
896 /* Number of entries in `compilers', not counting the null terminator. */
898 static int n_compilers;
900 /* The default list of file name suffixes and their compilation specs. */
902 static const struct compiler default_compilers[] =
904 /* Add lists of suffixes of known languages here. If those languages
905 were not present when we built the driver, we will hit these copies
906 and be given a more meaningful error than "file not used since
907 linking is not done". */
908 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
909 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
910 {".mii", "#Objective-C++", 0, 0, 0},
911 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
912 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
913 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
914 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
915 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
916 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
917 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
918 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
919 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
920 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
921 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
922 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
923 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
924 {".r", "#Ratfor", 0, 0, 0},
925 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
926 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
927 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
928 {".go", "#Go", 0, 1, 0},
929 /* Next come the entries for C. */
930 {".c", "@c", 0, 0, 1},
932 /* cc1 has an integrated ISO C preprocessor. We should invoke the
933 external preprocessor if -save-temps is given. */
934 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
937 %eGNU C no longer supports -traditional without -E}\
938 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
939 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
940 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
942 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
943 cc1 %(cpp_unique_options) %(cc1_options)}}}\
944 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
946 "%{!E:%e-E or -x required when input is from standard input}\
947 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
948 {".h", "@c-header", 0, 0, 0},
950 /* cc1 has an integrated ISO C preprocessor. We should invoke the
951 external preprocessor if -save-temps is given. */
952 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
954 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
955 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
956 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
958 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
959 %W{o*:--output-pch=%*}}%V}\
960 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
961 cc1 %(cpp_unique_options) %(cc1_options)\
962 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
963 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
964 {".i", "@cpp-output", 0, 0, 0},
966 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
967 {".s", "@assembler", 0, 0, 0},
969 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
970 {".sx", "@assembler-with-cpp", 0, 0, 0},
971 {".S", "@assembler-with-cpp", 0, 0, 0},
972 {"@assembler-with-cpp",
973 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
974 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
975 %{E|M|MM:%(cpp_debug_options)}\
976 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
977 as %(asm_debug) %(asm_options) %|.s %A }}}}"
979 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
980 %{E|M|MM:%(cpp_debug_options)}\
981 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
982 as %(asm_debug) %(asm_options) %m.s %A }}}}"
987 /* Mark end of table. */
991 /* Number of elements in default_compilers, not counting the terminator. */
993 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
995 typedef char *char_p; /* For DEF_VEC_P. */
997 DEF_VEC_ALLOC_P(char_p,heap);
999 /* A vector of options to give to the linker.
1000 These options are accumulated by %x,
1001 and substituted into the linker command with %X. */
1002 static VEC(char_p,heap) *linker_options;
1004 /* A vector of options to give to the assembler.
1005 These options are accumulated by -Wa,
1006 and substituted into the assembler command with %Y. */
1007 static VEC(char_p,heap) *assembler_options;
1009 /* A vector of options to give to the preprocessor.
1010 These options are accumulated by -Wp,
1011 and substituted into the preprocessor command with %Z. */
1012 static VEC(char_p,heap) *preprocessor_options;
1015 skip_whitespace (char *p)
1019 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1020 be considered whitespace. */
1021 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1023 else if (*p == '\n' || *p == ' ' || *p == '\t')
1037 /* Structures to keep track of prefixes to try when looking for files. */
1041 const char *prefix; /* String to prepend to the path. */
1042 struct prefix_list *next; /* Next in linked list. */
1043 int require_machine_suffix; /* Don't use without machine_suffix. */
1044 /* 2 means try both machine_suffix and just_machine_suffix. */
1045 int priority; /* Sort key - priority within list. */
1046 int os_multilib; /* 1 if OS multilib scheme should be used,
1047 0 for GCC multilib scheme. */
1052 struct prefix_list *plist; /* List of prefixes to try */
1053 int max_len; /* Max length of a prefix in PLIST */
1054 const char *name; /* Name of this list (used in config stuff) */
1057 /* List of prefixes to try when looking for executables. */
1059 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1061 /* List of prefixes to try when looking for startup (crt0) files. */
1063 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1065 /* List of prefixes to try when looking for include files. */
1067 static struct path_prefix include_prefixes = { 0, 0, "include" };
1069 /* Suffix to attach to directories searched for commands.
1070 This looks like `MACHINE/VERSION/'. */
1072 static const char *machine_suffix = 0;
1074 /* Suffix to attach to directories searched for commands.
1075 This is just `MACHINE/'. */
1077 static const char *just_machine_suffix = 0;
1079 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1081 static const char *gcc_exec_prefix;
1083 /* Adjusted value of standard_libexec_prefix. */
1085 static const char *gcc_libexec_prefix;
1087 /* Default prefixes to attach to command names. */
1089 #ifndef STANDARD_STARTFILE_PREFIX_1
1090 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1092 #ifndef STANDARD_STARTFILE_PREFIX_2
1093 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1096 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1097 #undef MD_EXEC_PREFIX
1098 #undef MD_STARTFILE_PREFIX
1099 #undef MD_STARTFILE_PREFIX_1
1102 /* If no prefixes defined, use the null string, which will disable them. */
1103 #ifndef MD_EXEC_PREFIX
1104 #define MD_EXEC_PREFIX ""
1106 #ifndef MD_STARTFILE_PREFIX
1107 #define MD_STARTFILE_PREFIX ""
1109 #ifndef MD_STARTFILE_PREFIX_1
1110 #define MD_STARTFILE_PREFIX_1 ""
1113 /* These directories are locations set at configure-time based on the
1114 --prefix option provided to configure. Their initializers are
1115 defined in Makefile.in. These paths are not *directly* used when
1116 gcc_exec_prefix is set because, in that case, we know where the
1117 compiler has been installed, and use paths relative to that
1118 location instead. */
1119 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1120 static const char *const standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1121 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1122 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1124 /* For native compilers, these are well-known paths containing
1125 components that may be provided by the system. For cross
1126 compilers, these paths are not used. */
1127 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1128 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1129 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1130 static const char *const standard_startfile_prefix_1
1131 = STANDARD_STARTFILE_PREFIX_1;
1132 static const char *const standard_startfile_prefix_2
1133 = STANDARD_STARTFILE_PREFIX_2;
1135 /* A relative path to be used in finding the location of tools
1136 relative to the driver. */
1137 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1139 /* Subdirectory to use for locating libraries. Set by
1140 set_multilib_dir based on the compilation options. */
1142 static const char *multilib_dir;
1144 /* Subdirectory to use for locating libraries in OS conventions. Set by
1145 set_multilib_dir based on the compilation options. */
1147 static const char *multilib_os_dir;
1149 /* Structure to keep track of the specs that have been defined so far.
1150 These are accessed using %(specname) or %[specname] in a compiler
1155 /* The following 2 fields must be first */
1156 /* to allow EXTRA_SPECS to be initialized */
1157 const char *name; /* name of the spec. */
1158 const char *ptr; /* available ptr if no static pointer */
1160 /* The following fields are not initialized */
1161 /* by EXTRA_SPECS */
1162 const char **ptr_spec; /* pointer to the spec itself. */
1163 struct spec_list *next; /* Next spec in linked list. */
1164 int name_len; /* length of the name */
1165 int alloc_p; /* whether string was allocated */
1168 #define INIT_STATIC_SPEC(NAME,PTR) \
1169 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1171 /* List of statically defined specs. */
1172 static struct spec_list static_specs[] =
1174 INIT_STATIC_SPEC ("asm", &asm_spec),
1175 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1176 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1177 INIT_STATIC_SPEC ("asm_options", &asm_options),
1178 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1179 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1180 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1181 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1182 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1183 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1184 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1185 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1186 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1187 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1188 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec),
1189 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1190 INIT_STATIC_SPEC ("link", &link_spec),
1191 INIT_STATIC_SPEC ("lib", &lib_spec),
1192 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec),
1193 INIT_STATIC_SPEC ("mflib", &mflib_spec),
1194 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec),
1195 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1196 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1197 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1198 INIT_STATIC_SPEC ("version", &compiler_version),
1199 INIT_STATIC_SPEC ("multilib", &multilib_select),
1200 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1201 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1202 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1203 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1204 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1205 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1206 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec),
1207 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec),
1208 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec),
1209 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1210 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1211 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1212 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1213 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1214 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec),
1215 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1216 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1219 #ifdef EXTRA_SPECS /* additional specs needed */
1220 /* Structure to keep track of just the first two args of a spec_list.
1221 That is all that the EXTRA_SPECS macro gives us. */
1224 const char *const name;
1225 const char *const ptr;
1228 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1229 static struct spec_list *extra_specs = (struct spec_list *) 0;
1232 /* List of dynamically allocates specs that have been defined so far. */
1234 static struct spec_list *specs = (struct spec_list *) 0;
1236 /* List of static spec functions. */
1238 static const struct spec_function static_spec_functions[] =
1240 { "getenv", getenv_spec_function },
1241 { "if-exists", if_exists_spec_function },
1242 { "if-exists-else", if_exists_else_spec_function },
1243 { "replace-outfile", replace_outfile_spec_function },
1244 { "remove-outfile", remove_outfile_spec_function },
1245 { "version-compare", version_compare_spec_function },
1246 { "include", include_spec_function },
1247 { "find-file", find_file_spec_function },
1248 { "find-plugindir", find_plugindir_spec_function },
1249 { "print-asm-header", print_asm_header_spec_function },
1250 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function },
1251 { "compare-debug-self-opt", compare_debug_self_opt_spec_function },
1252 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function },
1253 { "pass-through-libs", pass_through_libs_spec_func },
1254 #ifdef EXTRA_SPEC_FUNCTIONS
1255 EXTRA_SPEC_FUNCTIONS
1260 static int processing_spec_function;
1262 /* Add appropriate libgcc specs to OBSTACK, taking into account
1263 various permutations of -shared-libgcc, -shared, and such. */
1265 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1267 #ifndef USE_LD_AS_NEEDED
1268 #define USE_LD_AS_NEEDED 0
1272 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1273 const char *static_name, const char *eh_name)
1277 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}"
1278 "%{!static:%{!static-libgcc:"
1279 #if USE_LD_AS_NEEDED
1280 "%{!shared-libgcc:",
1281 static_name, " --as-needed ", shared_name, " --no-as-needed"
1284 shared_name, "%{!shared: ", static_name, "}"
1288 "%{!shared-libgcc:", static_name, " ", eh_name, "}"
1289 "%{shared-libgcc:", shared_name, " ", static_name, "}"
1293 "%{shared-libgcc:", shared_name, "}"
1294 "%{!shared-libgcc:", static_name, "}"
1297 "%{shared:", shared_name, "}"
1302 obstack_grow (obstack, buf, strlen (buf));
1305 #endif /* ENABLE_SHARED_LIBGCC */
1307 /* Initialize the specs lookup routines. */
1312 struct spec_list *next = (struct spec_list *) 0;
1313 struct spec_list *sl = (struct spec_list *) 0;
1317 return; /* Already initialized. */
1320 fnotice (stderr, "Using built-in specs.\n");
1323 extra_specs = XCNEWVEC (struct spec_list, ARRAY_SIZE (extra_specs_1));
1325 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1327 sl = &extra_specs[i];
1328 sl->name = extra_specs_1[i].name;
1329 sl->ptr = extra_specs_1[i].ptr;
1331 sl->name_len = strlen (sl->name);
1332 sl->ptr_spec = &sl->ptr;
1337 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1339 sl = &static_specs[i];
1344 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1345 /* ??? If neither -shared-libgcc nor --static-libgcc was
1346 seen, then we should be making an educated guess. Some proposed
1347 heuristics for ELF include:
1349 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1350 program will be doing dynamic loading, which will likely
1351 need the shared libgcc.
1353 (2) If "-ldl", then it's also a fair bet that we're doing
1356 (3) For each ET_DYN we're linking against (either through -lfoo
1357 or /some/path/foo.so), check to see whether it or one of
1358 its dependencies depends on a shared libgcc.
1362 If the runtime is fixed to look for program headers instead
1363 of calling __register_frame_info at all, for each object,
1364 use the shared libgcc if any EH symbol referenced.
1366 If crtstuff is fixed to not invoke __register_frame_info
1367 automatically, for each object, use the shared libgcc if
1368 any non-empty unwind section found.
1370 Doing any of this probably requires invoking an external program to
1371 do the actual object file scanning. */
1373 const char *p = libgcc_spec;
1376 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1377 when given the proper command line arguments. */
1380 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1382 init_gcc_specs (&obstack,
1384 #ifdef USE_LIBUNWIND_EXCEPTIONS
1390 #ifdef USE_LIBUNWIND_EXCEPTIONS
1391 # ifdef HAVE_LD_STATIC_DYNAMIC
1392 " %{!static:" LD_STATIC_OPTION "} -lunwind"
1393 " %{!static:" LD_DYNAMIC_OPTION "}"
1403 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1405 /* Ug. We don't know shared library extensions. Hope that
1406 systems that use this form don't do shared libraries. */
1407 init_gcc_specs (&obstack,
1411 #ifdef USE_LIBUNWIND_EXCEPTIONS
1420 obstack_1grow (&obstack, *p);
1421 in_sep = (*p == ' ');
1426 obstack_1grow (&obstack, '\0');
1427 libgcc_spec = XOBFINISH (&obstack, const char *);
1430 #ifdef USE_AS_TRADITIONAL_FORMAT
1431 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1433 static const char tf[] = "--traditional-format ";
1434 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1435 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1436 asm_spec = XOBFINISH (&obstack, const char *);
1440 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC
1441 # ifdef LINK_BUILDID_SPEC
1442 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1443 obstack_grow (&obstack, LINK_BUILDID_SPEC, sizeof(LINK_BUILDID_SPEC) - 1);
1445 # ifdef LINK_EH_SPEC
1446 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1447 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1449 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1450 link_spec = XOBFINISH (&obstack, const char *);
1456 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1457 removed; If the spec starts with a + then SPEC is added to the end of the
1461 set_spec (const char *name, const char *spec)
1463 struct spec_list *sl;
1464 const char *old_spec;
1465 int name_len = strlen (name);
1468 /* If this is the first call, initialize the statically allocated specs. */
1471 struct spec_list *next = (struct spec_list *) 0;
1472 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1474 sl = &static_specs[i];
1481 /* See if the spec already exists. */
1482 for (sl = specs; sl; sl = sl->next)
1483 if (name_len == sl->name_len && !strcmp (sl->name, name))
1488 /* Not found - make it. */
1489 sl = XNEW (struct spec_list);
1490 sl->name = xstrdup (name);
1491 sl->name_len = name_len;
1492 sl->ptr_spec = &sl->ptr;
1494 *(sl->ptr_spec) = "";
1499 old_spec = *(sl->ptr_spec);
1500 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1501 ? concat (old_spec, spec + 1, NULL)
1506 fnotice (stderr, "Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1509 /* Free the old spec. */
1510 if (old_spec && sl->alloc_p)
1511 free (CONST_CAST(char *, old_spec));
1516 /* Accumulate a command (program name and args), and run it. */
1518 typedef const char *const_char_p; /* For DEF_VEC_P. */
1519 DEF_VEC_P(const_char_p);
1520 DEF_VEC_ALLOC_P(const_char_p,heap);
1522 /* Vector of pointers to arguments in the current line of specifications. */
1524 static VEC(const_char_p,heap) *argbuf;
1526 /* Position in the argbuf vector containing the name of the output file
1527 (the value associated with the "-o" flag). */
1529 static int have_o_argbuf_index = 0;
1531 /* Were the options -c, -S or -E passed. */
1532 static int have_c = 0;
1534 /* Was the option -o passed. */
1535 static int have_o = 0;
1537 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1538 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1541 static struct temp_name {
1542 const char *suffix; /* suffix associated with the code. */
1543 int length; /* strlen (suffix). */
1544 int unique; /* Indicates whether %g or %u/%U was used. */
1545 const char *filename; /* associated filename. */
1546 int filename_length; /* strlen (filename). */
1547 struct temp_name *next;
1550 /* Number of commands executed so far. */
1552 static int execution_count;
1554 /* Number of commands that exited with a signal. */
1556 static int signal_count;
1558 /* Allocate the argument vector. */
1563 argbuf = VEC_alloc (const_char_p, heap, 10);
1566 /* Clear out the vector of arguments (after a command is executed). */
1571 VEC_truncate (const_char_p, argbuf, 0);
1574 /* Add one argument to the vector at the end.
1575 This is done when a space is seen or at the end of the line.
1576 If DELETE_ALWAYS is nonzero, the arg is a filename
1577 and the file should be deleted eventually.
1578 If DELETE_FAILURE is nonzero, the arg is a filename
1579 and the file should be deleted if this compilation fails. */
1582 store_arg (const char *arg, int delete_always, int delete_failure)
1584 VEC_safe_push (const_char_p, heap, argbuf, arg);
1586 if (strcmp (arg, "-o") == 0)
1587 have_o_argbuf_index = VEC_length (const_char_p, argbuf);
1588 if (delete_always || delete_failure)
1591 /* If the temporary file we should delete is specified as
1592 part of a joined argument extract the filename. */
1594 && (p = strrchr (arg, '=')))
1596 record_temp_file (arg, delete_always, delete_failure);
1600 /* Load specs from a file name named FILENAME, replacing occurrences of
1601 various different types of line-endings, \r\n, \n\r and just \r, with
1605 load_specs (const char *filename)
1609 struct stat statbuf;
1616 fnotice (stderr, "Reading specs from %s\n", filename);
1618 /* Open and stat the file. */
1619 desc = open (filename, O_RDONLY, 0);
1621 pfatal_with_name (filename);
1622 if (stat (filename, &statbuf) < 0)
1623 pfatal_with_name (filename);
1625 /* Read contents of file into BUFFER. */
1626 buffer = XNEWVEC (char, statbuf.st_size + 1);
1627 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1629 pfatal_with_name (filename);
1630 buffer[readlen] = 0;
1633 specs = XNEWVEC (char, readlen + 1);
1635 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1641 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1643 else if (*(buffer_p + 1) == '\n') /* \r\n */
1657 /* Read compilation specs from a file named FILENAME,
1658 replacing the default ones.
1660 A suffix which starts with `*' is a definition for
1661 one of the machine-specific sub-specs. The "suffix" should be
1662 *asm, *cc1, *cpp, *link, *startfile, etc.
1663 The corresponding spec is stored in asm_spec, etc.,
1664 rather than in the `compilers' vector.
1666 Anything invalid in the file is a fatal error. */
1669 read_specs (const char *filename, int main_p)
1674 buffer = load_specs (filename);
1676 /* Scan BUFFER for specs, putting them in the vector. */
1682 char *in, *out, *p1, *p2, *p3;
1684 /* Advance P in BUFFER to the next nonblank nocomment line. */
1685 p = skip_whitespace (p);
1689 /* Is this a special command that starts with '%'? */
1690 /* Don't allow this for the main specs file, since it would
1691 encourage people to overwrite it. */
1692 if (*p == '%' && !main_p)
1695 while (*p && *p != '\n')
1701 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1702 && (p1[sizeof "%include" - 1] == ' '
1703 || p1[sizeof "%include" - 1] == '\t'))
1707 p1 += sizeof ("%include");
1708 while (*p1 == ' ' || *p1 == '\t')
1711 if (*p1++ != '<' || p[-2] != '>')
1712 fatal_error ("specs %%include syntax malformed after "
1714 (long) (p1 - buffer + 1));
1717 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1718 read_specs (new_filename ? new_filename : p1, FALSE);
1721 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1722 && (p1[sizeof "%include_noerr" - 1] == ' '
1723 || p1[sizeof "%include_noerr" - 1] == '\t'))
1727 p1 += sizeof "%include_noerr";
1728 while (*p1 == ' ' || *p1 == '\t')
1731 if (*p1++ != '<' || p[-2] != '>')
1732 fatal_error ("specs %%include syntax malformed after "
1734 (long) (p1 - buffer + 1));
1737 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1739 read_specs (new_filename, FALSE);
1740 else if (verbose_flag)
1741 fnotice (stderr, "could not find specs file %s\n", p1);
1744 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1745 && (p1[sizeof "%rename" - 1] == ' '
1746 || p1[sizeof "%rename" - 1] == '\t'))
1749 struct spec_list *sl;
1750 struct spec_list *newsl;
1752 /* Get original name. */
1753 p1 += sizeof "%rename";
1754 while (*p1 == ' ' || *p1 == '\t')
1757 if (! ISALPHA ((unsigned char) *p1))
1758 fatal_error ("specs %%rename syntax malformed after "
1760 (long) (p1 - buffer));
1763 while (*p2 && !ISSPACE ((unsigned char) *p2))
1766 if (*p2 != ' ' && *p2 != '\t')
1767 fatal_error ("specs %%rename syntax malformed after "
1769 (long) (p2 - buffer));
1773 while (*p2 == ' ' || *p2 == '\t')
1776 if (! ISALPHA ((unsigned char) *p2))
1777 fatal_error ("specs %%rename syntax malformed after "
1779 (long) (p2 - buffer));
1781 /* Get new spec name. */
1783 while (*p3 && !ISSPACE ((unsigned char) *p3))
1787 fatal_error ("specs %%rename syntax malformed after "
1789 (long) (p3 - buffer));
1792 for (sl = specs; sl; sl = sl->next)
1793 if (name_len == sl->name_len && !strcmp (sl->name, p1))
1797 fatal_error ("specs %s spec was not found to be renamed", p1);
1799 if (strcmp (p1, p2) == 0)
1802 for (newsl = specs; newsl; newsl = newsl->next)
1803 if (strcmp (newsl->name, p2) == 0)
1804 fatal_error ("%s: attempt to rename spec %qs to "
1805 "already defined spec %qs",
1810 fnotice (stderr, "rename spec %s to %s\n", p1, p2);
1812 fnotice (stderr, "spec is '%s'\n\n", *(sl->ptr_spec));
1816 set_spec (p2, *(sl->ptr_spec));
1818 free (CONST_CAST (char *, *(sl->ptr_spec)));
1820 *(sl->ptr_spec) = "";
1825 fatal_error ("specs unknown %% command after %ld characters",
1826 (long) (p1 - buffer));
1829 /* Find the colon that should end the suffix. */
1831 while (*p1 && *p1 != ':' && *p1 != '\n')
1834 /* The colon shouldn't be missing. */
1836 fatal_error ("specs file malformed after %ld characters",
1837 (long) (p1 - buffer));
1839 /* Skip back over trailing whitespace. */
1841 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
1844 /* Copy the suffix to a string. */
1845 suffix = save_string (p, p2 - p);
1846 /* Find the next line. */
1847 p = skip_whitespace (p1 + 1);
1849 fatal_error ("specs file malformed after %ld characters",
1850 (long) (p - buffer));
1853 /* Find next blank line or end of string. */
1854 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
1857 /* Specs end at the blank line and do not include the newline. */
1858 spec = save_string (p, p1 - p);
1861 /* Delete backslash-newline sequences from the spec. */
1866 if (in[0] == '\\' && in[1] == '\n')
1868 else if (in[0] == '#')
1869 while (*in && *in != '\n')
1877 if (suffix[0] == '*')
1879 if (! strcmp (suffix, "*link_command"))
1880 link_command_spec = spec;
1882 set_spec (suffix + 1, spec);
1886 /* Add this pair to the vector. */
1888 = XRESIZEVEC (struct compiler, compilers, n_compilers + 2);
1890 compilers[n_compilers].suffix = suffix;
1891 compilers[n_compilers].spec = spec;
1893 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
1897 link_command_spec = spec;
1900 if (link_command_spec == 0)
1901 fatal_error ("spec file has no spec for linking");
1904 /* Record the names of temporary files we tell compilers to write,
1905 and delete them at the end of the run. */
1907 /* This is the common prefix we use to make temp file names.
1908 It is chosen once for each run of this program.
1909 It is substituted into a spec by %g or %j.
1910 Thus, all temp file names contain this prefix.
1911 In practice, all temp file names start with this prefix.
1913 This prefix comes from the envvar TMPDIR if it is defined;
1914 otherwise, from the P_tmpdir macro if that is defined;
1915 otherwise, in /usr/tmp or /tmp;
1916 or finally the current directory if all else fails. */
1918 static const char *temp_filename;
1920 /* Length of the prefix. */
1922 static int temp_filename_length;
1924 /* Define the list of temporary files to delete. */
1929 struct temp_file *next;
1932 /* Queue of files to delete on success or failure of compilation. */
1933 static struct temp_file *always_delete_queue;
1934 /* Queue of files to delete on failure of compilation. */
1935 static struct temp_file *failure_delete_queue;
1937 /* Record FILENAME as a file to be deleted automatically.
1938 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
1939 otherwise delete it in any case.
1940 FAIL_DELETE nonzero means delete it if a compilation step fails;
1941 otherwise delete it in any case. */
1944 record_temp_file (const char *filename, int always_delete, int fail_delete)
1946 char *const name = xstrdup (filename);
1950 struct temp_file *temp;
1951 for (temp = always_delete_queue; temp; temp = temp->next)
1952 if (! strcmp (name, temp->name))
1955 temp = XNEW (struct temp_file);
1956 temp->next = always_delete_queue;
1958 always_delete_queue = temp;
1965 struct temp_file *temp;
1966 for (temp = failure_delete_queue; temp; temp = temp->next)
1967 if (! strcmp (name, temp->name))
1970 temp = XNEW (struct temp_file);
1971 temp->next = failure_delete_queue;
1973 failure_delete_queue = temp;
1979 /* Delete all the temporary files whose names we previously recorded. */
1981 #ifndef DELETE_IF_ORDINARY
1982 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
1985 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
1986 if (unlink (NAME) < 0) \
1988 perror_with_name (NAME); \
1993 delete_if_ordinary (const char *name)
1999 printf ("Delete %s? (y or n) ", name);
2003 while ((c = getchar ()) != '\n' && c != EOF)
2006 if (i == 'y' || i == 'Y')
2008 DELETE_IF_ORDINARY (name, st, verbose_flag);
2012 delete_temp_files (void)
2014 struct temp_file *temp;
2016 for (temp = always_delete_queue; temp; temp = temp->next)
2017 delete_if_ordinary (temp->name);
2018 always_delete_queue = 0;
2021 /* Delete all the files to be deleted on error. */
2024 delete_failure_queue (void)
2026 struct temp_file *temp;
2028 for (temp = failure_delete_queue; temp; temp = temp->next)
2029 delete_if_ordinary (temp->name);
2033 clear_failure_queue (void)
2035 failure_delete_queue = 0;
2038 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2040 If DO_MULTI is true iterate over the paths twice, first with multilib
2041 suffix then without, otherwise iterate over the paths once without
2042 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2043 to avoid visiting the same path twice, but we could do better. For
2044 instance, /usr/lib/../lib is considered different from /usr/lib.
2045 At least EXTRA_SPACE chars past the end of the path passed to
2046 CALLBACK are available for use by the callback.
2047 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2049 Returns the value returned by CALLBACK. */
2052 for_each_path (const struct path_prefix *paths,
2055 void *(*callback) (char *, void *),
2056 void *callback_info)
2058 struct prefix_list *pl;
2059 const char *multi_dir = NULL;
2060 const char *multi_os_dir = NULL;
2061 const char *multi_suffix;
2062 const char *just_multi_suffix;
2065 bool skip_multi_dir = false;
2066 bool skip_multi_os_dir = false;
2068 multi_suffix = machine_suffix;
2069 just_multi_suffix = just_machine_suffix;
2070 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0)
2072 multi_dir = concat (multilib_dir, dir_separator_str, NULL);
2073 multi_suffix = concat (multi_suffix, multi_dir, NULL);
2074 just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL);
2076 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0)
2077 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL);
2081 size_t multi_dir_len = 0;
2082 size_t multi_os_dir_len = 0;
2084 size_t just_suffix_len;
2088 multi_dir_len = strlen (multi_dir);
2090 multi_os_dir_len = strlen (multi_os_dir);
2091 suffix_len = strlen (multi_suffix);
2092 just_suffix_len = strlen (just_multi_suffix);
2096 len = paths->max_len + extra_space + 1;
2097 if (suffix_len > multi_os_dir_len)
2100 len += multi_os_dir_len;
2101 path = XNEWVEC (char, len);
2104 for (pl = paths->plist; pl != 0; pl = pl->next)
2106 len = strlen (pl->prefix);
2107 memcpy (path, pl->prefix, len);
2109 /* Look first in MACHINE/VERSION subdirectory. */
2110 if (!skip_multi_dir)
2112 memcpy (path + len, multi_suffix, suffix_len + 1);
2113 ret = callback (path, callback_info);
2118 /* Some paths are tried with just the machine (ie. target)
2119 subdir. This is used for finding as, ld, etc. */
2121 && pl->require_machine_suffix == 2)
2123 memcpy (path + len, just_multi_suffix, just_suffix_len + 1);
2124 ret = callback (path, callback_info);
2129 /* Now try the base path. */
2130 if (!pl->require_machine_suffix
2131 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir))
2133 const char *this_multi;
2134 size_t this_multi_len;
2136 if (pl->os_multilib)
2138 this_multi = multi_os_dir;
2139 this_multi_len = multi_os_dir_len;
2143 this_multi = multi_dir;
2144 this_multi_len = multi_dir_len;
2148 memcpy (path + len, this_multi, this_multi_len + 1);
2152 ret = callback (path, callback_info);
2160 if (multi_dir == NULL && multi_os_dir == NULL)
2163 /* Run through the paths again, this time without multilibs.
2164 Don't repeat any we have already seen. */
2167 free (CONST_CAST (char *, multi_dir));
2169 free (CONST_CAST (char *, multi_suffix));
2170 multi_suffix = machine_suffix;
2171 free (CONST_CAST (char *, just_multi_suffix));
2172 just_multi_suffix = just_machine_suffix;
2175 skip_multi_dir = true;
2178 free (CONST_CAST (char *, multi_os_dir));
2179 multi_os_dir = NULL;
2182 skip_multi_os_dir = true;
2187 free (CONST_CAST (char *, multi_dir));
2188 free (CONST_CAST (char *, multi_suffix));
2189 free (CONST_CAST (char *, just_multi_suffix));
2192 free (CONST_CAST (char *, multi_os_dir));
2198 /* Callback for build_search_list. Adds path to obstack being built. */
2200 struct add_to_obstack_info {
2207 add_to_obstack (char *path, void *data)
2209 struct add_to_obstack_info *info = (struct add_to_obstack_info *) data;
2211 if (info->check_dir && !is_directory (path, false))
2214 if (!info->first_time)
2215 obstack_1grow (info->ob, PATH_SEPARATOR);
2217 obstack_grow (info->ob, path, strlen (path));
2219 info->first_time = false;
2223 /* Add or change the value of an environment variable, outputting the
2224 change to standard error if in verbose mode. */
2226 xputenv (const char *string)
2229 fnotice (stderr, "%s\n", string);
2230 putenv (CONST_CAST (char *, string));
2233 /* Build a list of search directories from PATHS.
2234 PREFIX is a string to prepend to the list.
2235 If CHECK_DIR_P is true we ensure the directory exists.
2236 If DO_MULTI is true, multilib paths are output first, then
2238 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2239 It is also used by the --print-search-dirs flag. */
2242 build_search_list (const struct path_prefix *paths, const char *prefix,
2243 bool check_dir, bool do_multi)
2245 struct add_to_obstack_info info;
2247 info.ob = &collect_obstack;
2248 info.check_dir = check_dir;
2249 info.first_time = true;
2251 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2252 obstack_1grow (&collect_obstack, '=');
2254 for_each_path (paths, do_multi, 0, add_to_obstack, &info);
2256 obstack_1grow (&collect_obstack, '\0');
2257 return XOBFINISH (&collect_obstack, char *);
2260 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2264 putenv_from_prefixes (const struct path_prefix *paths, const char *env_var,
2267 xputenv (build_search_list (paths, env_var, true, do_multi));
2270 /* Check whether NAME can be accessed in MODE. This is like access,
2271 except that it never considers directories to be executable. */
2274 access_check (const char *name, int mode)
2280 if (stat (name, &st) < 0
2281 || S_ISDIR (st.st_mode))
2285 return access (name, mode);
2288 /* Callback for find_a_file. Appends the file name to the directory
2289 path. If the resulting file exists in the right mode, return the
2290 full pathname to the file. */
2292 struct file_at_path_info {
2301 file_at_path (char *path, void *data)
2303 struct file_at_path_info *info = (struct file_at_path_info *) data;
2304 size_t len = strlen (path);
2306 memcpy (path + len, info->name, info->name_len);
2307 len += info->name_len;
2309 /* Some systems have a suffix for executable files.
2310 So try appending that first. */
2311 if (info->suffix_len)
2313 memcpy (path + len, info->suffix, info->suffix_len + 1);
2314 if (access_check (path, info->mode) == 0)
2319 if (access_check (path, info->mode) == 0)
2325 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2326 access to check permissions. If DO_MULTI is true, search multilib
2327 paths then non-multilib paths, otherwise do not search multilib paths.
2328 Return 0 if not found, otherwise return its name, allocated with malloc. */
2331 find_a_file (const struct path_prefix *pprefix, const char *name, int mode,
2334 struct file_at_path_info info;
2336 #ifdef DEFAULT_ASSEMBLER
2337 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2338 return xstrdup (DEFAULT_ASSEMBLER);
2341 #ifdef DEFAULT_LINKER
2342 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2343 return xstrdup (DEFAULT_LINKER);
2346 /* Determine the filename to execute (special case for absolute paths). */
2348 if (IS_ABSOLUTE_PATH (name))
2350 if (access (name, mode) == 0)
2351 return xstrdup (name);
2357 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "";
2358 info.name_len = strlen (info.name);
2359 info.suffix_len = strlen (info.suffix);
2362 return (char*) for_each_path (pprefix, do_multi,
2363 info.name_len + info.suffix_len,
2364 file_at_path, &info);
2367 /* Ranking of prefixes in the sort list. -B prefixes are put before
2370 enum path_prefix_priority
2372 PREFIX_PRIORITY_B_OPT,
2373 PREFIX_PRIORITY_LAST
2376 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2377 order according to PRIORITY. Within each PRIORITY, new entries are
2380 If WARN is nonzero, we will warn if no file is found
2381 through this prefix. WARN should point to an int
2382 which will be set to 1 if this entry is used.
2384 COMPONENT is the value to be passed to update_path.
2386 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2387 the complete value of machine_suffix.
2388 2 means try both machine_suffix and just_machine_suffix. */
2391 add_prefix (struct path_prefix *pprefix, const char *prefix,
2392 const char *component, /* enum prefix_priority */ int priority,
2393 int require_machine_suffix, int os_multilib)
2395 struct prefix_list *pl, **prev;
2398 for (prev = &pprefix->plist;
2399 (*prev) != NULL && (*prev)->priority <= priority;
2400 prev = &(*prev)->next)
2403 /* Keep track of the longest prefix. */
2405 prefix = update_path (prefix, component);
2406 len = strlen (prefix);
2407 if (len > pprefix->max_len)
2408 pprefix->max_len = len;
2410 pl = XNEW (struct prefix_list);
2411 pl->prefix = prefix;
2412 pl->require_machine_suffix = require_machine_suffix;
2413 pl->priority = priority;
2414 pl->os_multilib = os_multilib;
2416 /* Insert after PREV. */
2421 /* Same as add_prefix, but prepending target_system_root to prefix. */
2422 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2424 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2425 const char *component,
2426 /* enum prefix_priority */ int priority,
2427 int require_machine_suffix, int os_multilib)
2429 if (!IS_ABSOLUTE_PATH (prefix))
2430 fatal_error ("system path %qs is not absolute", prefix);
2432 if (target_system_root)
2434 if (target_sysroot_suffix)
2435 prefix = concat (target_sysroot_suffix, prefix, NULL);
2436 prefix = concat (target_system_root, prefix, NULL);
2438 /* We have to override this because GCC's notion of sysroot
2439 moves along with GCC. */
2443 add_prefix (pprefix, prefix, component, priority,
2444 require_machine_suffix, os_multilib);
2447 /* Execute the command specified by the arguments on the current line of spec.
2448 When using pipes, this includes several piped-together commands
2449 with `|' between them.
2451 Return 0 if successful, -1 if failed. */
2457 int n_commands; /* # of command. */
2459 struct pex_obj *pex;
2462 const char *prog; /* program name. */
2463 const char **argv; /* vector of args. */
2467 struct command *commands; /* each command buffer with above info. */
2469 gcc_assert (!processing_spec_function);
2473 string = find_a_file (&exec_prefixes,
2474 VEC_index (const_char_p, argbuf, 0), X_OK, false);
2476 VEC_replace (const_char_p, argbuf, 0, string);
2477 insert_wrapper (wrapper_string);
2480 /* Count # of piped commands. */
2481 for (n_commands = 1, i = 0; VEC_iterate (const_char_p, argbuf, i, arg); i++)
2482 if (strcmp (arg, "|") == 0)
2485 /* Get storage for each command. */
2486 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2488 /* Split argbuf into its separate piped processes,
2489 and record info about each one.
2490 Also search for the programs that are to be run. */
2492 VEC_safe_push (const_char_p, heap, argbuf, 0);
2494 commands[0].prog = VEC_index (const_char_p, argbuf, 0); /* first command. */
2495 commands[0].argv = VEC_address (const_char_p, argbuf);
2497 if (!wrapper_string)
2499 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false);
2500 commands[0].argv[0] = (string) ? string : commands[0].argv[0];
2503 for (n_commands = 1, i = 0; VEC_iterate (const_char_p, argbuf, i, arg); i++)
2504 if (arg && strcmp (arg, "|") == 0)
2505 { /* each command. */
2506 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2507 fatal_error ("-pipe not supported");
2509 VEC_replace (const_char_p, argbuf, i, 0); /* Termination of
2511 commands[n_commands].prog = VEC_index (const_char_p, argbuf, i + 1);
2512 commands[n_commands].argv
2513 = &(VEC_address (const_char_p, argbuf))[i + 1];
2514 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2517 commands[n_commands].argv[0] = string;
2521 /* If -v, print what we are about to do, and maybe query. */
2525 /* For help listings, put a blank line between sub-processes. */
2526 if (print_help_list)
2527 fputc ('\n', stderr);
2529 /* Print each piped command as a separate line. */
2530 for (i = 0; i < n_commands; i++)
2532 const char *const *j;
2534 if (verbose_only_flag)
2536 for (j = commands[i].argv; *j; j++)
2539 for (p = *j; *p; ++p)
2540 if (!ISALNUM ((unsigned char) *p)
2541 && *p != '_' && *p != '/' && *p != '-' && *p != '.')
2545 fprintf (stderr, " \"");
2546 for (p = *j; *p; ++p)
2548 if (*p == '"' || *p == '\\' || *p == '$')
2549 fputc ('\\', stderr);
2552 fputc ('"', stderr);
2554 /* If it's empty, print "". */
2556 fprintf (stderr, " \"\"");
2558 fprintf (stderr, " %s", *j);
2562 for (j = commands[i].argv; *j; j++)
2563 /* If it's empty, print "". */
2565 fprintf (stderr, " \"\"");
2567 fprintf (stderr, " %s", *j);
2569 /* Print a pipe symbol after all but the last command. */
2570 if (i + 1 != n_commands)
2571 fprintf (stderr, " |");
2572 fprintf (stderr, "\n");
2575 if (verbose_only_flag != 0)
2577 /* verbose_only_flag should act as if the spec was
2578 executed, so increment execution_count before
2579 returning. This prevents spurious warnings about
2580 unused linker input files, etc. */
2585 fnotice (stderr, "\nGo ahead? (y or n) ");
2589 while (getchar () != '\n')
2592 if (i != 'y' && i != 'Y')
2597 #ifdef ENABLE_VALGRIND_CHECKING
2598 /* Run the each command through valgrind. To simplify prepending the
2599 path to valgrind and the option "-q" (for quiet operation unless
2600 something triggers), we allocate a separate argv array. */
2602 for (i = 0; i < n_commands; i++)
2608 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2611 argv = XALLOCAVEC (const char *, argc + 3);
2613 argv[0] = VALGRIND_PATH;
2615 for (j = 2; j < argc + 2; j++)
2616 argv[j] = commands[i].argv[j - 2];
2619 commands[i].argv = argv;
2620 commands[i].prog = argv[0];
2624 /* Run each piped subprocess. */
2626 pex = pex_init (PEX_USE_PIPES | ((report_times || report_times_to_file)
2627 ? PEX_RECORD_TIMES : 0),
2628 progname, temp_filename);
2630 fatal_error ("pex_init failed: %m");
2632 for (i = 0; i < n_commands; i++)
2636 const char *string = commands[i].argv[0];
2638 errmsg = pex_run (pex,
2639 ((i + 1 == n_commands ? PEX_LAST : 0)
2640 | (string == commands[i].prog ? PEX_SEARCH : 0)),
2641 string, CONST_CAST (char **, commands[i].argv),
2646 fatal_error (errmsg);
2650 pfatal_with_name (errmsg);
2654 if (string != commands[i].prog)
2655 free (CONST_CAST (char *, string));
2660 /* Wait for all the subprocesses to finish. */
2664 struct pex_time *times = NULL;
2667 statuses = (int *) alloca (n_commands * sizeof (int));
2668 if (!pex_get_status (pex, n_commands, statuses))
2669 fatal_error ("failed to get exit status: %m");
2671 if (report_times || report_times_to_file)
2673 times = (struct pex_time *) alloca (n_commands * sizeof (struct pex_time));
2674 if (!pex_get_times (pex, n_commands, times))
2675 fatal_error ("failed to get process times: %m");
2680 for (i = 0; i < n_commands; ++i)
2682 int status = statuses[i];
2684 if (WIFSIGNALED (status))
2687 /* SIGPIPE is a special case. It happens in -pipe mode
2688 when the compiler dies before the preprocessor is done,
2689 or the assembler dies before the compiler is done.
2690 There's generally been an error already, and this is
2691 just fallout. So don't generate another error unless
2692 we would otherwise have succeeded. */
2693 if (WTERMSIG (status) == SIGPIPE
2694 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2701 internal_error ("%s (program %s)",
2702 strsignal (WTERMSIG (status)), commands[i].prog);
2704 else if (WIFEXITED (status)
2705 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2707 if (WEXITSTATUS (status) > greatest_status)
2708 greatest_status = WEXITSTATUS (status);
2712 if (report_times || report_times_to_file)
2714 struct pex_time *pt = ×[i];
2717 ut = ((double) pt->user_seconds
2718 + (double) pt->user_microseconds / 1.0e6);
2719 st = ((double) pt->system_seconds
2720 + (double) pt->system_microseconds / 1.0e6);
2725 fnotice (stderr, "# %s %.2f %.2f\n",
2726 commands[i].prog, ut, st);
2728 if (report_times_to_file)
2731 const char *const *j;
2733 fprintf (report_times_to_file, "%g %g", ut, st);
2735 for (j = &commands[i].prog; *j; j = &commands[i].argv[++c])
2738 for (p = *j; *p; ++p)
2739 if (*p == '"' || *p == '\\' || *p == '$'
2745 fprintf (report_times_to_file, " \"");
2746 for (p = *j; *p; ++p)
2748 if (*p == '"' || *p == '\\' || *p == '$')
2749 fputc ('\\', report_times_to_file);
2750 fputc (*p, report_times_to_file);
2752 fputc ('"', report_times_to_file);
2755 fprintf (report_times_to_file, " %s", *j);
2758 fputc ('\n', report_times_to_file);
2768 /* Find all the switches given to us
2769 and make a vector describing them.
2770 The elements of the vector are strings, one per switch given.
2771 If a switch uses following arguments, then the `part1' field
2772 is the switch itself and the `args' field
2773 is a null-terminated vector containing the following arguments.
2774 Bits in the `live_cond' field are:
2775 SWITCH_LIVE to indicate this switch is true in a conditional spec.
2776 SWITCH_FALSE to indicate this switch is overridden by a later switch.
2777 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
2778 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
2779 in all do_spec calls afterwards. Used for %<S from self specs.
2780 The `validated' field is nonzero if any spec has looked at this switch;
2781 if it remains zero at the end of the run, it must be meaningless. */
2783 #define SWITCH_LIVE (1 << 0)
2784 #define SWITCH_FALSE (1 << 1)
2785 #define SWITCH_IGNORE (1 << 2)
2786 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
2787 #define SWITCH_KEEP_FOR_GCC (1 << 4)
2793 unsigned int live_cond;
2794 unsigned char validated;
2795 unsigned char ordering;
2798 static struct switchstr *switches;
2800 static int n_switches;
2802 static int n_switches_alloc;
2804 /* Set to zero if -fcompare-debug is disabled, positive if it's
2805 enabled and we're running the first compilation, negative if it's
2806 enabled and we're running the second compilation. For most of the
2807 time, it's in the range -1..1, but it can be temporarily set to 2
2808 or 3 to indicate that the -fcompare-debug flags didn't come from
2809 the command-line, but rather from the GCC_COMPARE_DEBUG environment
2810 variable, until a synthesized -fcompare-debug flag is added to the
2814 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
2815 int compare_debug_second;
2817 /* Set to the flags that should be passed to the second compilation in
2818 a -fcompare-debug compilation. */
2819 const char *compare_debug_opt;
2821 static struct switchstr *switches_debug_check[2];
2823 static int n_switches_debug_check[2];
2825 static int n_switches_alloc_debug_check[2];
2827 static char *debug_check_temp_file[2];
2829 /* Language is one of three things:
2831 1) The name of a real programming language.
2832 2) NULL, indicating that no one has figured out
2834 3) '*', indicating that the file should be passed
2839 const char *language;
2840 struct compiler *incompiler;
2845 /* Also a vector of input files specified. */
2847 static struct infile *infiles;
2851 static int n_infiles_alloc;
2853 /* True if multiple input files are being compiled to a single
2856 static bool combine_inputs;
2858 /* This counts the number of libraries added by lang_specific_driver, so that
2859 we can tell if there were any user supplied any files or libraries. */
2861 static int added_libraries;
2863 /* And a vector of corresponding output files is made up later. */
2865 const char **outfiles;
2867 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2869 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2870 is true if we should look for an executable suffix. DO_OBJ
2871 is true if we should look for an object suffix. */
2874 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
2875 int do_obj ATTRIBUTE_UNUSED)
2877 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2885 len = strlen (name);
2887 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2888 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2889 if (do_obj && len > 2
2890 && name[len - 2] == '.'
2891 && name[len - 1] == 'o')
2893 obstack_grow (&obstack, name, len - 2);
2894 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2895 name = XOBFINISH (&obstack, const char *);
2899 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2900 /* If there is no filetype, make it the executable suffix (which includes
2901 the "."). But don't get confused if we have just "-o". */
2902 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
2905 for (i = len - 1; i >= 0; i--)
2906 if (IS_DIR_SEPARATOR (name[i]))
2909 for (i++; i < len; i++)
2913 obstack_grow (&obstack, name, len);
2914 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
2915 strlen (TARGET_EXECUTABLE_SUFFIX));
2916 name = XOBFINISH (&obstack, const char *);
2923 /* Display the command line switches accepted by gcc. */
2927 printf (_("Usage: %s [options] file...\n"), progname);
2928 fputs (_("Options:\n"), stdout);
2930 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
2931 fputs (_(" --help Display this information\n"), stdout);
2932 fputs (_(" --target-help Display target specific command line options\n"), stdout);
2933 fputs (_(" --help={target|optimizers|warnings|params|[^]{joined|separate|undocumented}}[,...]\n"), stdout);
2934 fputs (_(" Display specific types of command line options\n"), stdout);
2936 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
2937 fputs (_(" --version Display compiler version information\n"), stdout);
2938 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
2939 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
2940 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
2941 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
2942 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
2943 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
2944 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
2945 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
2947 -print-multi-lib Display the mapping between command line options and\n\
2948 multiple library search directories\n"), stdout);
2949 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
2950 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout);
2951 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout);
2952 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
2953 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
2954 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
2955 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
2956 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
2957 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
2958 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
2959 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout);
2961 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
2962 prefixes to other gcc components\n"), stdout);
2963 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
2964 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
2965 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
2966 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
2968 --sysroot=<directory> Use <directory> as the root directory for headers\n\
2969 and libraries\n"), stdout);
2970 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
2971 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
2972 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
2973 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
2974 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
2975 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
2976 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
2978 -x <language> Specify the language of the following input files\n\
2979 Permissible languages include: c c++ assembler none\n\
2980 'none' means revert to the default behavior of\n\
2981 guessing the language based on the file's extension\n\
2985 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
2986 passed on to the various sub-processes invoked by %s. In order to pass\n\
2987 other options on to these processes the -W<letter> options must be used.\n\
2990 /* The rest of the options are displayed by invocations of the various
2995 add_preprocessor_option (const char *option, int len)
2997 VEC_safe_push (char_p, heap, preprocessor_options,
2998 save_string (option, len));
3002 add_assembler_option (const char *option, int len)
3004 VEC_safe_push (char_p, heap, assembler_options, save_string (option, len));
3008 add_linker_option (const char *option, int len)
3010 VEC_safe_push (char_p, heap, linker_options, save_string (option, len));
3013 /* Allocate space for an input file in infiles. */
3018 if (n_infiles_alloc == 0)
3020 n_infiles_alloc = 16;
3021 infiles = XNEWVEC (struct infile, n_infiles_alloc);
3023 else if (n_infiles_alloc == n_infiles)
3025 n_infiles_alloc *= 2;
3026 infiles = XRESIZEVEC (struct infile, infiles, n_infiles_alloc);
3030 /* Store an input file with the given NAME and LANGUAGE in
3034 add_infile (const char *name, const char *language)
3037 infiles[n_infiles].name = name;
3038 infiles[n_infiles++].language = language;
3041 /* Allocate space for a switch in switches. */
3046 if (n_switches_alloc == 0)
3048 n_switches_alloc = 16;
3049 switches = XNEWVEC (struct switchstr, n_switches_alloc);
3051 else if (n_switches_alloc == n_switches)
3053 n_switches_alloc *= 2;
3054 switches = XRESIZEVEC (struct switchstr, switches, n_switches_alloc);
3058 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3059 as validated if VALIDATED. */
3062 save_switch (const char *opt, size_t n_args, const char *const *args,
3066 switches[n_switches].part1 = opt + 1;
3068 switches[n_switches].args = 0;
3071 switches[n_switches].args = XNEWVEC (const char *, n_args + 1);
3072 memcpy (switches[n_switches].args, args, n_args * sizeof (const char *));
3073 switches[n_switches].args[n_args] = NULL;
3076 switches[n_switches].live_cond = 0;
3077 switches[n_switches].validated = validated;
3078 switches[n_switches].ordering = 0;
3082 /* Handle an option DECODED that is unknown to the option-processing
3083 machinery, but may be known to specs. */
3086 driver_unknown_option_callback (const struct cl_decoded_option *decoded)
3088 save_switch (decoded->canonical_option[0],
3089 decoded->canonical_option_num_elements - 1,
3090 &decoded->canonical_option[1], false);
3095 /* Handle an option DECODED that is not marked as CL_DRIVER.
3096 LANG_MASK will always be CL_DRIVER. */
3099 driver_wrong_lang_callback (const struct cl_decoded_option *decoded,
3100 unsigned int lang_mask ATTRIBUTE_UNUSED)
3102 /* At this point, non-driver options are accepted (and expected to
3103 be passed down by specs) unless marked to be rejected by the
3104 driver. Options to be rejected by the driver but accepted by the
3105 compilers proper are treated just like completely unknown
3107 const struct cl_option *option = &cl_options[decoded->opt_index];
3109 if (option->flags & CL_REJECT_DRIVER)
3110 error ("unrecognized command line option %qs",
3111 decoded->orig_option_with_args_text);
3113 driver_unknown_option_callback (decoded);
3116 /* Note that an option (index OPT_INDEX, argument ARG, value VALUE)
3117 has been successfully handled with a handler for mask MASK. */
3120 driver_post_handling_callback (const struct cl_decoded_option *decoded ATTRIBUTE_UNUSED,
3121 unsigned int mask ATTRIBUTE_UNUSED)
3123 /* Nothing to do here. */
3126 static const char *spec_lang = 0;
3127 static int last_language_n_infiles;
3129 /* Handle a driver option; arguments and return value as for
3133 driver_handle_option (struct gcc_options *opts,
3134 struct gcc_options *opts_set,
3135 const struct cl_decoded_option *decoded,
3136 unsigned int lang_mask ATTRIBUTE_UNUSED, int kind,
3138 const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED,
3139 diagnostic_context *dc)
3141 size_t opt_index = decoded->opt_index;
3142 const char *arg = decoded->arg;
3143 const char *compare_debug_replacement_opt;
3144 int value = decoded->value;
3145 bool validated = false;
3146 bool do_save = true;
3148 gcc_assert (opts == &global_options);
3149 gcc_assert (opts_set == &global_options_set);
3150 gcc_assert (kind == DK_UNSPECIFIED);
3151 gcc_assert (loc == UNKNOWN_LOCATION);
3152 gcc_assert (dc == global_dc);
3158 struct spec_list *sl;
3160 for (sl = specs; sl; sl = sl->next)
3161 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3162 if (link_command_spec)
3163 printf ("*link_command:\n%s\n\n", link_command_spec);
3167 case OPT_dumpversion:
3168 printf ("%s\n", spec_version);
3171 case OPT_dumpmachine:
3172 printf ("%s\n", spec_machine);
3178 /* CPP driver cannot obtain switch from cc1_options. */
3180 add_preprocessor_option ("--version", strlen ("--version"));
3181 add_assembler_option ("--version", strlen ("--version"));
3182 add_linker_option ("--version", strlen ("--version"));
3186 print_help_list = 1;
3188 /* CPP driver cannot obtain switch from cc1_options. */
3190 add_preprocessor_option ("--help", 6);
3191 add_assembler_option ("--help", 6);
3192 add_linker_option ("--help", 6);
3196 print_subprocess_help = 2;
3199 case OPT__target_help:
3200 print_subprocess_help = 1;
3202 /* CPP driver cannot obtain switch from cc1_options. */
3204 add_preprocessor_option ("--target-help", 13);
3205 add_assembler_option ("--target-help", 13);
3206 add_linker_option ("--target-help", 13);
3209 case OPT_pass_exit_codes:
3210 case OPT_print_search_dirs:
3211 case OPT_print_file_name_:
3212 case OPT_print_prog_name_:
3213 case OPT_print_multi_lib:
3214 case OPT_print_multi_directory:
3215 case OPT_print_sysroot:
3216 case OPT_print_multi_os_directory:
3217 case OPT_print_sysroot_headers_suffix:
3220 /* These options set the variables specified in common.opt
3221 automatically, and do not need to be saved for spec
3226 case OPT_print_libgcc_file_name:
3227 print_file_name = "libgcc.a";
3231 case OPT_fcompare_debug_second:
3232 compare_debug_second = 1;
3235 case OPT_fcompare_debug:
3239 compare_debug_replacement_opt = "-fcompare-debug=";
3241 goto compare_debug_with_arg;
3244 compare_debug_replacement_opt = "-fcompare-debug=-gtoggle";
3246 goto compare_debug_with_arg;
3253 case OPT_fcompare_debug_:
3254 compare_debug_replacement_opt = decoded->canonical_option[0];
3255 compare_debug_with_arg:
3256 gcc_assert (decoded->canonical_option_num_elements == 1);
3257 gcc_assert (arg != NULL);
3262 if (compare_debug < 0)
3263 compare_debug_opt = NULL;
3265 compare_debug_opt = arg;
3266 save_switch (compare_debug_replacement_opt, 0, NULL, validated);
3272 /* Pass the rest of this option to the assembler. */
3274 /* Split the argument at commas. */
3276 for (j = 0; arg[j]; j++)
3279 add_assembler_option (arg + prev, j - prev);
3283 /* Record the part after the last comma. */
3284 add_assembler_option (arg + prev, j - prev);
3292 /* Pass the rest of this option to the preprocessor. */
3294 /* Split the argument at commas. */
3296 for (j = 0; arg[j]; j++)
3299 add_preprocessor_option (arg + prev, j - prev);
3303 /* Record the part after the last comma. */
3304 add_preprocessor_option (arg + prev, j - prev);
3312 /* Split the argument at commas. */
3314 for (j = 0; arg[j]; j++)
3317 add_infile (save_string (arg + prev, j - prev), "*");
3320 /* Record the part after the last comma. */
3321 add_infile (arg + prev, "*");
3327 add_infile (arg, "*");
3331 case OPT_Xpreprocessor:
3332 add_preprocessor_option (arg, strlen (arg));
3336 case OPT_Xassembler:
3337 add_assembler_option (arg, strlen (arg));
3342 /* POSIX allows separation of -l and the lib arg; canonicalize
3343 by concatenating -l with its arg */
3344 add_infile (concat ("-l", arg, NULL), "*");
3349 /* Similarly, canonicalize -L for linkers that may not accept
3350 separate arguments. */
3351 save_switch (concat ("-L", arg, NULL), 0, NULL, validated);
3356 save_switch (concat ("-F", arg, NULL), 0, NULL, validated);
3359 case OPT_save_temps:
3360 save_temps_flag = SAVE_TEMPS_CWD;
3364 case OPT_save_temps_:
3365 if (strcmp (arg, "cwd") == 0)
3366 save_temps_flag = SAVE_TEMPS_CWD;
3367 else if (strcmp (arg, "obj") == 0
3368 || strcmp (arg, "object") == 0)
3369 save_temps_flag = SAVE_TEMPS_OBJ;
3371 fatal_error ("%qs is an unknown -save-temps option",
3372 decoded->orig_option_with_args_text);
3375 case OPT_no_canonical_prefixes:
3376 /* Already handled as a special case, so ignored here. */
3382 /* These options set the variables specified in common.opt
3383 automatically, but do need to be saved for spec
3389 struct user_specs *user = XNEW (struct user_specs);
3391 user->next = (struct user_specs *) 0;
3392 user->filename = arg;
3393 if (user_specs_tail)
3394 user_specs_tail->next = user;
3396 user_specs_head = user;
3397 user_specs_tail = user;
3403 target_system_root = arg;
3404 target_system_root_changed = 1;
3409 if (report_times_to_file)
3410 fclose (report_times_to_file);
3411 report_times_to_file = fopen (arg, "a");
3417 This is similar to -v except that there is no execution
3418 of the commands and the echoed arguments are quoted. It
3419 is intended for use in shell scripts to capture the
3420 driver-generated command line. */
3421 verbose_only_flag++;
3428 size_t len = strlen (arg);
3430 /* Catch the case where the user has forgotten to append a
3431 directory separator to the path. Note, they may be using
3432 -B to add an executable name prefix, eg "i386-elf-", in
3433 order to distinguish between multiple installations of
3434 GCC in the same directory. Hence we must check to see
3435 if appending a directory separator actually makes a
3436 valid directory name. */
3437 if (!IS_DIR_SEPARATOR (arg[len - 1])
3438 && is_directory (arg, false))
3440 char *tmp = XNEWVEC (char, len + 2);
3442 tmp[len] = DIR_SEPARATOR;
3447 add_prefix (&exec_prefixes, arg, NULL,
3448 PREFIX_PRIORITY_B_OPT, 0, 0);
3449 add_prefix (&startfile_prefixes, arg, NULL,
3450 PREFIX_PRIORITY_B_OPT, 0, 0);
3451 add_prefix (&include_prefixes, arg, NULL,
3452 PREFIX_PRIORITY_B_OPT, 0, 0);
3459 if (!strcmp (spec_lang, "none"))
3460 /* Suppress the warning if -xnone comes after the last input
3461 file, because alternate command interfaces like g++ might
3462 find it useful to place -xnone after each input file. */
3465 last_language_n_infiles = n_infiles;
3471 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3472 arg = convert_filename (arg, ! have_c, 0);
3474 /* Save the output name in case -save-temps=obj was used. */
3475 save_temps_prefix = xstrdup (arg);
3476 /* On some systems, ld cannot handle "-o" without a space. So
3477 split the option from its argument. */
3478 save_switch ("-o", 1, &arg, validated);
3481 case OPT_static_libgcc:
3482 case OPT_shared_libgcc:
3483 case OPT_static_libgfortran:
3484 case OPT_static_libstdc__:
3485 /* These are always valid, since gcc.c itself understands the
3486 first two, gfortranspec.c understands -static-libgfortran and
3487 g++spec.c understands -static-libstdc++ */
3492 /* Various driver options need no special processing at this
3493 point, having been handled in a prescan above or being
3494 handled by specs. */
3499 save_switch (decoded->canonical_option[0],
3500 decoded->canonical_option_num_elements - 1,
3501 &decoded->canonical_option[1], validated);
3505 /* Put the driver's standard set of option handlers in *HANDLERS. */
3508 set_option_handlers (struct cl_option_handlers *handlers)
3510 handlers->unknown_option_callback = driver_unknown_option_callback;
3511 handlers->wrong_lang_callback = driver_wrong_lang_callback;
3512 handlers->post_handling_callback = driver_post_handling_callback;
3513 handlers->num_handlers = 1;
3514 handlers->handlers[0].handler = driver_handle_option;
3515 handlers->handlers[0].mask = CL_DRIVER;
3518 /* Create the vector `switches' and its contents.
3519 Store its length in `n_switches'. */
3522 process_command (unsigned int decoded_options_count,
3523 struct cl_decoded_option *decoded_options)
3527 const char *tooldir_prefix;
3528 char *(*get_relative_prefix) (const char *, const char *,
3529 const char *) = NULL;
3530 struct cl_option_handlers handlers;
3533 gcc_exec_prefix = getenv ("GCC_EXEC_PREFIX");
3537 added_libraries = 0;
3539 /* Figure compiler version from version string. */
3541 compiler_version = temp1 = xstrdup (version_string);
3543 for (; *temp1; ++temp1)
3552 /* Handle any -no-canonical-prefixes flag early, to assign the function
3553 that builds relative prefixes. This function creates default search
3554 paths that are needed later in normal option handling. */
3556 for (j = 1; j < decoded_options_count; j++)
3558 if (decoded_options[j].opt_index == OPT_no_canonical_prefixes)
3560 get_relative_prefix = make_relative_prefix_ignore_links;
3564 if (! get_relative_prefix)
3565 get_relative_prefix = make_relative_prefix;
3567 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3568 see if we can create it from the pathname specified in
3569 decoded_options[0].arg. */
3571 gcc_libexec_prefix = standard_libexec_prefix;
3573 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3574 if (!gcc_exec_prefix)
3576 gcc_exec_prefix = get_relative_prefix (decoded_options[0].arg,
3577 standard_bindir_prefix,
3578 standard_exec_prefix);
3579 gcc_libexec_prefix = get_relative_prefix (decoded_options[0].arg,
3580 standard_bindir_prefix,
3581 standard_libexec_prefix);
3582 if (gcc_exec_prefix)
3583 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3587 /* make_relative_prefix requires a program name, but
3588 GCC_EXEC_PREFIX is typically a directory name with a trailing
3589 / (which is ignored by make_relative_prefix), so append a
3591 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL);
3592 gcc_libexec_prefix = get_relative_prefix (tmp_prefix,
3593 standard_exec_prefix,
3594 standard_libexec_prefix);
3596 /* The path is unrelocated, so fallback to the original setting. */
3597 if (!gcc_libexec_prefix)
3598 gcc_libexec_prefix = standard_libexec_prefix;
3604 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3605 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3606 or an automatically created GCC_EXEC_PREFIX from
3607 decoded_options[0].arg. */
3609 /* Do language-specific adjustment/addition of flags. */
3610 lang_specific_driver (&decoded_options, &decoded_options_count,
3613 if (gcc_exec_prefix)
3615 int len = strlen (gcc_exec_prefix);
3617 if (len > (int) sizeof ("/lib/gcc/") - 1
3618 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3620 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3621 if (IS_DIR_SEPARATOR (*temp)
3622 && strncmp (temp + 1, "lib", 3) == 0
3623 && IS_DIR_SEPARATOR (temp[4])
3624 && strncmp (temp + 5, "gcc", 3) == 0)
3625 len -= sizeof ("/lib/gcc/") - 1;
3628 set_std_prefix (gcc_exec_prefix, len);
3629 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3630 PREFIX_PRIORITY_LAST, 0, 0);
3631 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3632 PREFIX_PRIORITY_LAST, 0, 0);
3635 /* COMPILER_PATH and LIBRARY_PATH have values
3636 that are lists of directory names with colons. */
3638 temp = getenv ("COMPILER_PATH");
3641 const char *startp, *endp;
3642 char *nstore = (char *) alloca (strlen (temp) + 3);
3644 startp = endp = temp;
3647 if (*endp == PATH_SEPARATOR || *endp == 0)
3649 strncpy (nstore, startp, endp - startp);
3651 strcpy (nstore, concat (".", dir_separator_str, NULL));
3652 else if (!IS_DIR_SEPARATOR (endp[-1]))
3654 nstore[endp - startp] = DIR_SEPARATOR;
3655 nstore[endp - startp + 1] = 0;
3658 nstore[endp - startp] = 0;
3659 add_prefix (&exec_prefixes, nstore, 0,
3660 PREFIX_PRIORITY_LAST, 0, 0);
3661 add_prefix (&include_prefixes, nstore, 0,
3662 PREFIX_PRIORITY_LAST, 0, 0);
3665 endp = startp = endp + 1;
3672 temp = getenv (LIBRARY_PATH_ENV);
3673 if (temp && *cross_compile == '0')
3675 const char *startp, *endp;
3676 char *nstore = (char *) alloca (strlen (temp) + 3);
3678 startp = endp = temp;
3681 if (*endp == PATH_SEPARATOR || *endp == 0)
3683 strncpy (nstore, startp, endp - startp);
3685 strcpy (nstore, concat (".", dir_separator_str, NULL));
3686 else if (!IS_DIR_SEPARATOR (endp[-1]))
3688 nstore[endp - startp] = DIR_SEPARATOR;
3689 nstore[endp - startp + 1] = 0;
3692 nstore[endp - startp] = 0;
3693 add_prefix (&startfile_prefixes, nstore, NULL,
3694 PREFIX_PRIORITY_LAST, 0, 1);
3697 endp = startp = endp + 1;
3704 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3705 temp = getenv ("LPATH");
3706 if (temp && *cross_compile == '0')
3708 const char *startp, *endp;
3709 char *nstore = (char *) alloca (strlen (temp) + 3);
3711 startp = endp = temp;
3714 if (*endp == PATH_SEPARATOR || *endp == 0)
3716 strncpy (nstore, startp, endp - startp);
3718 strcpy (nstore, concat (".", dir_separator_str, NULL));
3719 else if (!IS_DIR_SEPARATOR (endp[-1]))
3721 nstore[endp - startp] = DIR_SEPARATOR;
3722 nstore[endp - startp + 1] = 0;
3725 nstore[endp - startp] = 0;
3726 add_prefix (&startfile_prefixes, nstore, NULL,
3727 PREFIX_PRIORITY_LAST, 0, 1);
3730 endp = startp = endp + 1;
3737 /* Process the options and store input files and switches in their
3740 last_language_n_infiles = -1;
3742 set_option_handlers (&handlers);
3744 for (j = 1; j < decoded_options_count; j++)
3746 switch (decoded_options[j].opt_index)
3758 for (j = 1; j < decoded_options_count; j++)
3760 if (decoded_options[j].opt_index == OPT_SPECIAL_input_file)
3762 const char *arg = decoded_options[j].arg;
3763 const char *p = strrchr (arg, '@');
3767 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3768 arg = convert_filename (arg, 0, access (arg, F_OK));
3770 /* For LTO static archive support we handle input file
3771 specifications that are composed of a filename and
3772 an offset like FNAME@OFFSET. */
3775 && sscanf (p, "@%li%n", &offset, &consumed) >= 1
3776 && strlen (p) == (unsigned int)consumed)
3778 fname = (char *)xmalloc (p - arg + 1);
3779 memcpy (fname, arg, p - arg);
3780 fname[p - arg] = '\0';
3781 /* Only accept non-stdin and existing FNAME parts, otherwise
3782 try with the full name. */
3783 if (strcmp (fname, "-") == 0 || access (fname, F_OK) < 0)
3786 fname = xstrdup (arg);
3790 fname = xstrdup (arg);
3792 if (strcmp (fname, "-") != 0 && access (fname, F_OK) < 0)
3793 perror_with_name (fname);
3795 add_infile (arg, spec_lang);
3801 read_cmdline_option (&global_options, &global_options_set,
3802 decoded_options + j, UNKNOWN_LOCATION,
3803 CL_DRIVER, &handlers, global_dc);
3806 /* If -save-temps=obj and -o name, create the prefix to use for %b.
3807 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
3808 if (save_temps_flag == SAVE_TEMPS_OBJ && save_temps_prefix != NULL)
3810 save_temps_length = strlen (save_temps_prefix);
3811 temp = strrchr (lbasename (save_temps_prefix), '.');
3814 save_temps_length -= strlen (temp);
3815 save_temps_prefix[save_temps_length] = '\0';
3819 else if (save_temps_prefix != NULL)
3821 free (save_temps_prefix);
3822 save_temps_prefix = NULL;
3825 if (save_temps_flag && use_pipes)
3827 /* -save-temps overrides -pipe, so that temp files are produced */
3828 if (save_temps_flag)
3829 warning (0, "-pipe ignored because -save-temps specified");
3835 const char *gcd = getenv ("GCC_COMPARE_DEBUG");
3837 if (gcd && gcd[0] == '-')
3840 compare_debug_opt = gcd;
3842 else if (gcd && *gcd && strcmp (gcd, "0"))
3845 compare_debug_opt = "-gtoggle";
3848 else if (compare_debug < 0)
3851 gcc_assert (!compare_debug_opt);
3854 /* Set up the search paths. We add directories that we expect to
3855 contain GNU Toolchain components before directories specified by
3856 the machine description so that we will find GNU components (like
3857 the GNU assembler) before those of the host system. */
3859 /* If we don't know where the toolchain has been installed, use the
3860 configured-in locations. */
3861 if (!gcc_exec_prefix)
3864 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
3865 PREFIX_PRIORITY_LAST, 1, 0);
3866 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
3867 PREFIX_PRIORITY_LAST, 2, 0);
3868 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3869 PREFIX_PRIORITY_LAST, 2, 0);
3871 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3872 PREFIX_PRIORITY_LAST, 1, 0);
3875 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix));
3876 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3877 dir_separator_str, NULL);
3879 /* Look for tools relative to the location from which the driver is
3880 running, or, if that is not available, the configured prefix. */
3882 = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
3883 spec_machine, dir_separator_str,
3884 spec_version, dir_separator_str, tooldir_prefix, NULL);
3886 add_prefix (&exec_prefixes,
3887 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3888 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0);
3889 add_prefix (&startfile_prefixes,
3890 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3891 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1);
3893 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
3894 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
3895 then consider it to relocate with the rest of the GCC installation
3896 if GCC_EXEC_PREFIX is set.
3897 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
3898 if (target_system_root && !target_system_root_changed && gcc_exec_prefix)
3900 char *tmp_prefix = get_relative_prefix (decoded_options[0].arg,
3901 standard_bindir_prefix,
3902 target_system_root);
3903 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
3905 target_system_root = tmp_prefix;
3906 target_system_root_changed = 1;
3911 /* More prefixes are enabled in main, after we read the specs file
3912 and determine whether this is cross-compilation or not. */
3914 if (n_infiles == last_language_n_infiles && spec_lang != 0)
3915 warning (0, "%<-x %s%> after last input file has no effect", spec_lang);
3917 if (compare_debug == 2 || compare_debug == 3)
3920 switches[n_switches].part1 = concat ("fcompare-debug=",
3923 switches[n_switches].args = 0;
3924 switches[n_switches].live_cond = 0;
3925 switches[n_switches].validated = 0;
3926 switches[n_switches].ordering = 0;
3931 /* Ensure we only invoke each subprocess once. */
3932 if (print_subprocess_help || print_help_list || print_version)
3936 /* Create a dummy input file, so that we can pass
3937 the help option on to the various sub-processes. */
3938 add_infile ("help-dummy", "c");
3942 switches[n_switches].part1 = 0;
3944 infiles[n_infiles].name = 0;
3947 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
3948 and place that in the environment. */
3951 set_collect_gcc_options (void)
3956 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
3958 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
3959 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
3962 for (i = 0; (int) i < n_switches; i++)
3964 const char *const *args;
3967 obstack_grow (&collect_obstack, " ", 1);
3971 /* Ignore elided switches. */
3972 if ((switches[i].live_cond
3973 & (SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC))
3977 obstack_grow (&collect_obstack, "'-", 2);
3978 q = switches[i].part1;
3979 while ((p = strchr (q, '\'')))
3981 obstack_grow (&collect_obstack, q, p - q);
3982 obstack_grow (&collect_obstack, "'\\''", 4);
3985 obstack_grow (&collect_obstack, q, strlen (q));
3986 obstack_grow (&collect_obstack, "'", 1);
3988 for (args = switches[i].args; args && *args; args++)
3990 obstack_grow (&collect_obstack, " '", 2);
3992 while ((p = strchr (q, '\'')))
3994 obstack_grow (&collect_obstack, q, p - q);
3995 obstack_grow (&collect_obstack, "'\\''", 4);
3998 obstack_grow (&collect_obstack, q, strlen (q));
3999 obstack_grow (&collect_obstack, "'", 1);
4002 obstack_grow (&collect_obstack, "\0", 1);
4003 xputenv (XOBFINISH (&collect_obstack, char *));
4006 /* Process a spec string, accumulating and running commands. */
4008 /* These variables describe the input file name.
4009 input_file_number is the index on outfiles of this file,
4010 so that the output file name can be stored for later use by %o.
4011 input_basename is the start of the part of the input file
4012 sans all directory names, and basename_length is the number
4013 of characters starting there excluding the suffix .c or whatever. */
4015 static const char *gcc_input_filename;
4016 static int input_file_number;
4017 size_t input_filename_length;
4018 static int basename_length;
4019 static int suffixed_basename_length;
4020 static const char *input_basename;
4021 static const char *input_suffix;
4022 #ifndef HOST_LACKS_INODE_NUMBERS
4023 static struct stat input_stat;
4025 static int input_stat_set;
4027 /* The compiler used to process the current input file. */
4028 static struct compiler *input_file_compiler;
4030 /* These are variables used within do_spec and do_spec_1. */
4032 /* Nonzero if an arg has been started and not yet terminated
4033 (with space, tab or newline). */
4034 static int arg_going;
4036 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4037 is a temporary file name. */
4038 static int delete_this_arg;
4040 /* Nonzero means %w has been seen; the next arg to be terminated
4041 is the output file name of this compilation. */
4042 static int this_is_output_file;
4044 /* Nonzero means %s has been seen; the next arg to be terminated
4045 is the name of a library file and we should try the standard
4046 search dirs for it. */
4047 static int this_is_library_file;
4049 /* Nonzero means %T has been seen; the next arg to be terminated
4050 is the name of a linker script and we should try all of the
4051 standard search dirs for it. If it is found insert a --script
4052 command line switch and then substitute the full path in place,
4053 otherwise generate an error message. */
4054 static int this_is_linker_script;
4056 /* Nonzero means that the input of this command is coming from a pipe. */
4057 static int input_from_pipe;
4059 /* Nonnull means substitute this for any suffix when outputting a switches
4061 static const char *suffix_subst;
4063 /* If there is an argument being accumulated, terminate it and store it. */
4066 end_going_arg (void)
4072 obstack_1grow (&obstack, 0);
4073 string = XOBFINISH (&obstack, const char *);
4074 if (this_is_library_file)
4075 string = find_file (string);
4076 if (this_is_linker_script)
4078 char * full_script_path = find_a_file (&startfile_prefixes, string, R_OK, true);
4080 if (full_script_path == NULL)
4082 error ("unable to locate default linker script %qs in the library search paths", string);
4083 /* Script was not found on search path. */
4086 store_arg ("--script", false, false);
4087 string = full_script_path;
4089 store_arg (string, delete_this_arg, this_is_output_file);
4090 if (this_is_output_file)
4091 outfiles[input_file_number] = string;
4097 /* Parse the WRAPPER string which is a comma separated list of the command line
4098 and insert them into the beginning of argbuf. */
4101 insert_wrapper (const char *wrapper)
4105 char *buf = xstrdup (wrapper);
4107 unsigned int old_length = VEC_length (const_char_p, argbuf);
4115 while ((p = strchr (p, ',')) != NULL);
4117 VEC_safe_grow (const_char_p, heap, argbuf, old_length + n);
4118 memmove (VEC_address (const_char_p, argbuf) + n,
4119 VEC_address (const_char_p, argbuf),
4120 old_length * sizeof (const_char_p));
4131 VEC_replace (const_char_p, argbuf, i, p);
4134 while ((p = strchr (p, ',')) != NULL);
4135 gcc_assert (i == n);
4138 /* Process the spec SPEC and run the commands specified therein.
4139 Returns 0 if the spec is successfully processed; -1 if failed. */
4142 do_spec (const char *spec)
4146 value = do_spec_2 (spec);
4148 /* Force out any unfinished command.
4149 If -pipe, this forces out the last command if it ended in `|'. */
4152 if (VEC_length (const_char_p, argbuf) > 0
4153 && !strcmp (VEC_last (const_char_p, argbuf), "|"))
4154 VEC_pop (const_char_p, argbuf);
4156 set_collect_gcc_options ();
4158 if (VEC_length (const_char_p, argbuf) > 0)
4166 do_spec_2 (const char *spec)
4172 delete_this_arg = 0;
4173 this_is_output_file = 0;
4174 this_is_library_file = 0;
4175 this_is_linker_script = 0;
4176 input_from_pipe = 0;
4177 suffix_subst = NULL;
4179 result = do_spec_1 (spec, 0, NULL);
4187 /* Process the given spec string and add any new options to the end
4188 of the switches/n_switches array. */
4191 do_option_spec (const char *name, const char *spec)
4193 unsigned int i, value_count, value_len;
4194 const char *p, *q, *value;
4195 char *tmp_spec, *tmp_spec_p;
4197 if (configure_default_options[0].name == NULL)
4200 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4201 if (strcmp (configure_default_options[i].name, name) == 0)
4203 if (i == ARRAY_SIZE (configure_default_options))
4206 value = configure_default_options[i].value;
4207 value_len = strlen (value);
4209 /* Compute the size of the final spec. */
4212 while ((p = strstr (p, "%(VALUE)")) != NULL)
4218 /* Replace each %(VALUE) by the specified value. */
4219 tmp_spec = (char *) alloca (strlen (spec) + 1
4220 + value_count * (value_len - strlen ("%(VALUE)")));
4221 tmp_spec_p = tmp_spec;
4223 while ((p = strstr (q, "%(VALUE)")) != NULL)
4225 memcpy (tmp_spec_p, q, p - q);
4226 tmp_spec_p = tmp_spec_p + (p - q);
4227 memcpy (tmp_spec_p, value, value_len);
4228 tmp_spec_p += value_len;
4229 q = p + strlen ("%(VALUE)");
4231 strcpy (tmp_spec_p, q);
4233 do_self_spec (tmp_spec);
4236 /* Process the given spec string and add any new options to the end
4237 of the switches/n_switches array. */
4240 do_self_spec (const char *spec)
4245 do_spec_1 (" ", 0, NULL);
4247 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4248 do_self_specs adds the replacements to switches array, so it shouldn't
4249 be processed afterwards. */
4250 for (i = 0; i < n_switches; i++)
4251 if ((switches[i].live_cond & SWITCH_IGNORE))
4252 switches[i].live_cond |= SWITCH_IGNORE_PERMANENTLY;
4254 if (VEC_length (const_char_p, argbuf) > 0)
4256 const char **argbuf_copy;
4257 struct cl_decoded_option *decoded_options;
4258 struct cl_option_handlers handlers;
4259 unsigned int decoded_options_count;
4262 /* Create a copy of argbuf with a dummy argv[0] entry for
4263 decode_cmdline_options_to_array. */
4264 argbuf_copy = XNEWVEC (const char *,
4265 VEC_length (const_char_p, argbuf) + 1);
4266 argbuf_copy[0] = "";
4267 memcpy (argbuf_copy + 1, VEC_address (const_char_p, argbuf),
4268 VEC_length (const_char_p, argbuf) * sizeof (const char *));
4270 decode_cmdline_options_to_array (VEC_length (const_char_p, argbuf) + 1,
4272 CL_DRIVER, &decoded_options,
4273 &decoded_options_count);
4275 set_option_handlers (&handlers);
4277 for (j = 1; j < decoded_options_count; j++)
4279 switch (decoded_options[j].opt_index)
4281 case OPT_SPECIAL_input_file:
4282 /* Specs should only generate options, not input
4284 if (strcmp (decoded_options[j].arg, "-") != 0)
4285 fatal_error ("switch %qs does not start with %<-%>",
4286 decoded_options[j].arg);
4288 fatal_error ("spec-generated switch is just %<-%>");
4291 case OPT_fcompare_debug_second:
4292 case OPT_fcompare_debug:
4293 case OPT_fcompare_debug_:
4295 /* Avoid duplicate processing of some options from
4296 compare-debug specs; just save them here. */
4297 save_switch (decoded_options[j].canonical_option[0],
4298 (decoded_options[j].canonical_option_num_elements
4300 &decoded_options[j].canonical_option[1], false);
4304 read_cmdline_option (&global_options, &global_options_set,
4305 decoded_options + j, UNKNOWN_LOCATION,
4306 CL_DRIVER, &handlers, global_dc);
4312 switches[n_switches].part1 = 0;
4316 /* Callback for processing %D and %I specs. */
4318 struct spec_path_info {
4323 bool separate_options;
4327 spec_path (char *path, void *data)
4329 struct spec_path_info *info = (struct spec_path_info *) data;
4333 if (info->omit_relative && !IS_ABSOLUTE_PATH (path))
4336 if (info->append_len != 0)
4338 len = strlen (path);
4339 memcpy (path + len, info->append, info->append_len + 1);
4342 if (!is_directory (path, true))
4345 do_spec_1 (info->option, 1, NULL);
4346 if (info->separate_options)
4347 do_spec_1 (" ", 0, NULL);
4349 if (info->append_len == 0)
4351 len = strlen (path);
4352 save = path[len - 1];
4353 if (IS_DIR_SEPARATOR (path[len - 1]))
4354 path[len - 1] = '\0';
4357 do_spec_1 (path, 1, NULL);
4358 do_spec_1 (" ", 0, NULL);
4360 /* Must not damage the original path. */
4361 if (info->append_len == 0)
4362 path[len - 1] = save;
4367 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4371 create_at_file (char **argv)
4373 char *temp_file = make_temp_file ("");
4374 char *at_argument = concat ("@", temp_file, NULL);
4375 FILE *f = fopen (temp_file, "w");
4379 fatal_error ("could not open temporary response file %s",
4382 status = writeargv (argv, f);
4385 fatal_error ("could not write to temporary response file %s",
4388 status = fclose (f);
4391 fatal_error ("could not close temporary response file %s",
4394 store_arg (at_argument, 0, 0);
4396 record_temp_file (temp_file, !save_temps_flag, !save_temps_flag);
4399 /* True if we should compile INFILE. */
4402 compile_input_file_p (struct infile *infile)
4404 if ((!infile->language) || (infile->language[0] != '*'))
4405 if (infile->incompiler == input_file_compiler)
4410 /* Process each member of VEC as a spec. */
4413 do_specs_vec (VEC(char_p,heap) *vec)
4418 FOR_EACH_VEC_ELT (char_p, vec, ix, opt)
4420 do_spec_1 (opt, 1, NULL);
4421 /* Make each accumulated option a separate argument. */
4422 do_spec_1 (" ", 0, NULL);
4426 /* Process the sub-spec SPEC as a portion of a larger spec.
4427 This is like processing a whole spec except that we do
4428 not initialize at the beginning and we do not supply a
4429 newline by default at the end.
4430 INSWITCH nonzero means don't process %-sequences in SPEC;
4431 in this case, % is treated as an ordinary character.
4432 This is used while substituting switches.
4433 INSWITCH nonzero also causes SPC not to terminate an argument.
4435 Value is zero unless a line was finished
4436 and the command on that line reported an error. */
4439 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4441 const char *p = spec;
4446 /* If it's an empty string argument to a switch, keep it as is. */
4447 if (inswitch && !*p)
4451 /* If substituting a switch, treat all chars like letters.
4452 Otherwise, NL, SPC, TAB and % are special. */
4453 switch (inswitch ? 'a' : c)
4458 if (VEC_length (const_char_p, argbuf) > 0
4459 && !strcmp (VEC_last (const_char_p, argbuf), "|"))
4461 /* A `|' before the newline means use a pipe here,
4462 but only if -pipe was specified.
4463 Otherwise, execute now and don't pass the `|' as an arg. */
4466 input_from_pipe = 1;
4470 VEC_pop (const_char_p, argbuf);
4473 set_collect_gcc_options ();
4475 if (VEC_length (const_char_p, argbuf) > 0)
4481 /* Reinitialize for a new command, and for a new argument. */
4484 delete_this_arg = 0;
4485 this_is_output_file = 0;
4486 this_is_library_file = 0;
4487 this_is_linker_script = 0;
4488 input_from_pipe = 0;
4495 obstack_1grow (&obstack, c);
4503 /* Reinitialize for a new argument. */
4504 delete_this_arg = 0;
4505 this_is_output_file = 0;
4506 this_is_library_file = 0;
4507 this_is_linker_script = 0;
4514 fatal_error ("spec %qs invalid", spec);
4517 if (save_temps_length)
4518 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4520 obstack_grow (&obstack, input_basename, basename_length);
4521 if (compare_debug < 0)
4522 obstack_grow (&obstack, ".gk", 3);
4527 if (save_temps_length)
4528 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4530 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4531 if (compare_debug < 0)
4532 obstack_grow (&obstack, ".gk", 3);
4537 delete_this_arg = 2;
4540 /* Dump out the directories specified with LIBRARY_PATH,
4541 followed by the absolute directories
4542 that we search for startfiles. */
4545 struct spec_path_info info;
4548 info.append_len = 0;
4549 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4550 /* Used on systems which record the specified -L dirs
4551 and use them to search for dynamic linking.
4552 Relative directories always come from -B,
4553 and it is better not to use them for searching
4554 at run time. In particular, stage1 loses. */
4555 info.omit_relative = true;
4557 info.omit_relative = false;
4559 info.separate_options = false;
4561 for_each_path (&startfile_prefixes, true, 0, spec_path, &info);
4566 /* %efoo means report an error with `foo' as error message
4567 and don't execute any more commands for this file. */
4571 while (*p != 0 && *p != '\n')
4573 buf = (char *) alloca (p - q + 1);
4574 strncpy (buf, q, p - q);
4576 error ("%s", _(buf));
4581 /* %nfoo means report a notice with `foo' on stderr. */
4585 while (*p != 0 && *p != '\n')
4587 buf = (char *) alloca (p - q + 1);
4588 strncpy (buf, q, p - q);
4590 inform (0, "%s", _(buf));
4600 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4601 defined, and it is not a directory, and it is
4602 writable, use it. Otherwise, treat this like any
4603 other temporary file. */
4605 if ((!save_temps_flag)
4606 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4607 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4609 obstack_grow (&obstack, HOST_BIT_BUCKET,
4610 strlen (HOST_BIT_BUCKET));
4611 delete_this_arg = 0;
4616 goto create_temp_file;
4620 obstack_1grow (&obstack, '-');
4621 delete_this_arg = 0;
4624 /* consume suffix */
4625 while (*p == '.' || ISALNUM ((unsigned char) *p))
4627 if (p[0] == '%' && p[1] == 'O')
4632 goto create_temp_file;
4636 /* consume suffix */
4637 while (*p == '.' || ISALNUM ((unsigned char) *p))
4639 if (p[0] == '%' && p[1] == 'O')
4644 goto create_temp_file;
4650 struct temp_name *t;
4652 const char *suffix = p;
4653 char *saved_suffix = NULL;
4655 while (*p == '.' || ISALNUM ((unsigned char) *p))
4657 suffix_length = p - suffix;
4658 if (p[0] == '%' && p[1] == 'O')
4661 /* We don't support extra suffix characters after %O. */
4662 if (*p == '.' || ISALNUM ((unsigned char) *p))
4663 fatal_error ("spec %qs has invalid %<%%0%c%>", spec, *p);
4664 if (suffix_length == 0)
4665 suffix = TARGET_OBJECT_SUFFIX;
4669 = XNEWVEC (char, suffix_length
4670 + strlen (TARGET_OBJECT_SUFFIX));
4671 strncpy (saved_suffix, suffix, suffix_length);
4672 strcpy (saved_suffix + suffix_length,
4673 TARGET_OBJECT_SUFFIX);
4675 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4678 if (compare_debug < 0)
4680 suffix = concat (".gk", suffix, NULL);
4684 /* If -save-temps=obj and -o were specified, use that for the
4686 if (save_temps_length)
4689 temp_filename_length
4690 = save_temps_length + suffix_length + 1;
4691 tmp = (char *) alloca (temp_filename_length);
4692 memcpy (tmp, save_temps_prefix, save_temps_length);
4693 memcpy (tmp + save_temps_length, suffix, suffix_length);
4694 tmp[save_temps_length + suffix_length] = '\0';
4695 temp_filename = save_string (tmp,
4696 temp_filename_length + 1);
4697 obstack_grow (&obstack, temp_filename,
4698 temp_filename_length);
4700 delete_this_arg = 0;
4704 /* If the gcc_input_filename has the same suffix specified
4705 for the %g, %u, or %U, and -save-temps is specified,
4706 we could end up using that file as an intermediate
4707 thus clobbering the user's source file (.e.g.,
4708 gcc -save-temps foo.s would clobber foo.s with the
4709 output of cpp0). So check for this condition and
4710 generate a temp file as the intermediate. */
4712 if (save_temps_flag)
4715 temp_filename_length = basename_length + suffix_length + 1;
4716 tmp = (char *) alloca (temp_filename_length);
4717 memcpy (tmp, input_basename, basename_length);
4718 memcpy (tmp + basename_length, suffix, suffix_length);
4719 tmp[basename_length + suffix_length] = '\0';
4720 temp_filename = tmp;
4722 if (strcmp (temp_filename, gcc_input_filename) != 0)
4724 #ifndef HOST_LACKS_INODE_NUMBERS
4725 struct stat st_temp;
4727 /* Note, set_input() resets input_stat_set to 0. */
4728 if (input_stat_set == 0)
4730 input_stat_set = stat (gcc_input_filename,
4732 if (input_stat_set >= 0)
4736 /* If we have the stat for the gcc_input_filename
4737 and we can do the stat for the temp_filename
4738 then the they could still refer to the same
4739 file if st_dev/st_ino's are the same. */
4740 if (input_stat_set != 1
4741 || stat (temp_filename, &st_temp) < 0
4742 || input_stat.st_dev != st_temp.st_dev
4743 || input_stat.st_ino != st_temp.st_ino)
4745 /* Just compare canonical pathnames. */
4746 char* input_realname = lrealpath (gcc_input_filename);
4747 char* temp_realname = lrealpath (temp_filename);
4748 bool files_differ = strcmp (input_realname, temp_realname);
4749 free (input_realname);
4750 free (temp_realname);
4754 temp_filename = save_string (temp_filename,
4755 temp_filename_length + 1);
4756 obstack_grow (&obstack, temp_filename,
4757 temp_filename_length);
4759 delete_this_arg = 0;
4765 /* See if we already have an association of %g/%u/%U and
4767 for (t = temp_names; t; t = t->next)
4768 if (t->length == suffix_length
4769 && strncmp (t->suffix, suffix, suffix_length) == 0
4770 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
4773 /* Make a new association if needed. %u and %j
4775 if (t == 0 || c == 'u' || c == 'j')
4779 t = XNEW (struct temp_name);
4780 t->next = temp_names;
4783 t->length = suffix_length;
4786 t->suffix = saved_suffix;
4787 saved_suffix = NULL;
4790 t->suffix = save_string (suffix, suffix_length);
4791 t->unique = (c == 'u' || c == 'U' || c == 'j');
4792 temp_filename = make_temp_file (t->suffix);
4793 temp_filename_length = strlen (temp_filename);
4794 t->filename = temp_filename;
4795 t->filename_length = temp_filename_length;
4799 free (saved_suffix);
4801 obstack_grow (&obstack, t->filename, t->filename_length);
4802 delete_this_arg = 1;
4810 if (at_file_supplied)
4812 /* We are going to expand `%i' to `@FILE', where FILE
4813 is a newly-created temporary filename. The filenames
4814 that would usually be expanded in place of %o will be
4815 written to the temporary file. */
4820 for (i = 0; i < n_infiles; i++)
4821 if (compile_input_file_p (&infiles[i]))
4824 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
4826 /* Copy the strings over. */
4827 for (i = 0, j = 0; i < n_infiles; i++)
4828 if (compile_input_file_p (&infiles[i]))
4830 argv[j] = CONST_CAST (char *, infiles[i].name);
4831 infiles[i].compiled = true;
4836 create_at_file (argv);
4839 for (i = 0; (int) i < n_infiles; i++)
4840 if (compile_input_file_p (&infiles[i]))
4842 store_arg (infiles[i].name, 0, 0);
4843 infiles[i].compiled = true;
4848 obstack_grow (&obstack, gcc_input_filename,
4849 input_filename_length);
4856 struct spec_path_info info;
4860 do_spec_1 ("-imultilib", 1, NULL);
4861 /* Make this a separate argument. */
4862 do_spec_1 (" ", 0, NULL);
4863 do_spec_1 (multilib_dir, 1, NULL);
4864 do_spec_1 (" ", 0, NULL);
4867 if (gcc_exec_prefix)
4869 do_spec_1 ("-iprefix", 1, NULL);
4870 /* Make this a separate argument. */
4871 do_spec_1 (" ", 0, NULL);
4872 do_spec_1 (gcc_exec_prefix, 1, NULL);
4873 do_spec_1 (" ", 0, NULL);
4876 if (target_system_root_changed ||
4877 (target_system_root && target_sysroot_hdrs_suffix))
4879 do_spec_1 ("-isysroot", 1, NULL);
4880 /* Make this a separate argument. */
4881 do_spec_1 (" ", 0, NULL);
4882 do_spec_1 (target_system_root, 1, NULL);
4883 if (target_sysroot_hdrs_suffix)
4884 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
4885 do_spec_1 (" ", 0, NULL);
4888 info.option = "-isystem";
4889 info.append = "include";
4890 info.append_len = strlen (info.append);
4891 info.omit_relative = false;
4892 info.separate_options = true;
4894 for_each_path (&include_prefixes, false, info.append_len,
4897 info.append = "include-fixed";
4898 if (*sysroot_hdrs_suffix_spec)
4899 info.append = concat (info.append, dir_separator_str,
4900 multilib_dir, NULL);
4901 info.append_len = strlen (info.append);
4902 for_each_path (&include_prefixes, false, info.append_len,
4909 int max = n_infiles;
4910 max += lang_specific_extra_outfiles;
4912 if (HAVE_GNU_LD && at_file_supplied)
4914 /* We are going to expand `%o' to `@FILE', where FILE
4915 is a newly-created temporary filename. The filenames
4916 that would usually be expanded in place of %o will be
4917 written to the temporary file. */
4922 /* Convert OUTFILES into a form suitable for writeargv. */
4924 /* Determine how many are non-NULL. */
4925 for (n_files = 0, i = 0; i < max; i++)
4926 n_files += outfiles[i] != NULL;
4928 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
4930 /* Copy the strings over. */
4931 for (i = 0, j = 0; i < max; i++)
4934 argv[j] = CONST_CAST (char *, outfiles[i]);
4939 create_at_file (argv);
4942 for (i = 0; i < max; i++)
4944 store_arg (outfiles[i], 0, 0);
4949 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4954 this_is_library_file = 1;
4958 this_is_linker_script = 1;
4962 outfiles[input_file_number] = NULL;
4966 this_is_output_file = 1;
4971 unsigned int cur_index = VEC_length (const_char_p, argbuf);
4972 /* Handle the {...} following the %W. */
4974 fatal_error ("spec %qs has invalid %<%%W%c%>", spec, *p);
4975 p = handle_braces (p + 1);
4979 /* If any args were output, mark the last one for deletion
4981 if (VEC_length (const_char_p, argbuf) != cur_index)
4982 record_temp_file (VEC_last (const_char_p, argbuf), 0, 1);
4986 /* %x{OPTION} records OPTION for %X to output. */
4994 /* Skip past the option value and make a copy. */
4996 fatal_error ("spec %qs has invalid %<%%x%c%>", spec, *p);
4999 string = save_string (p1 + 1, p - p1 - 2);
5001 /* See if we already recorded this option. */
5002 FOR_EACH_VEC_ELT (char_p, linker_options, ix, opt)
5003 if (! strcmp (string, opt))
5009 /* This option is new; add it. */
5010 add_linker_option (string, strlen (string));
5014 /* Dump out the options accumulated previously using %x. */
5016 do_specs_vec (linker_options);
5019 /* Dump out the options accumulated previously using -Wa,. */
5021 do_specs_vec (assembler_options);
5024 /* Dump out the options accumulated previously using -Wp,. */
5026 do_specs_vec (preprocessor_options);
5029 /* Here are digits and numbers that just process
5030 a certain constant string as a spec. */
5033 value = do_spec_1 (cc1_spec, 0, NULL);
5039 value = do_spec_1 (cc1plus_spec, 0, NULL);
5045 value = do_spec_1 (asm_spec, 0, NULL);
5051 value = do_spec_1 (asm_final_spec, 0, NULL);
5058 const char *const spec
5059 = (input_file_compiler->cpp_spec
5060 ? input_file_compiler->cpp_spec
5062 value = do_spec_1 (spec, 0, NULL);
5069 value = do_spec_1 (endfile_spec, 0, NULL);
5075 value = do_spec_1 (link_spec, 0, NULL);
5081 value = do_spec_1 (lib_spec, 0, NULL);
5087 value = do_spec_1 (libgcc_spec, 0, NULL);
5093 /* We assume there is a directory
5094 separator at the end of this string. */
5095 if (target_system_root)
5097 obstack_grow (&obstack, target_system_root,
5098 strlen (target_system_root));
5099 if (target_sysroot_suffix)
5100 obstack_grow (&obstack, target_sysroot_suffix,
5101 strlen (target_sysroot_suffix));
5106 value = do_spec_1 (startfile_spec, 0, NULL);
5111 /* Here we define characters other than letters and digits. */
5114 p = handle_braces (p);
5120 p = handle_spec_function (p);
5126 obstack_1grow (&obstack, '%');
5133 while (p[len] && p[len] != ' ' && p[len] != '%')
5135 suffix_subst = save_string (p - 1, len + 1);
5140 /* Henceforth ignore the option(s) matching the pattern
5146 int have_wildcard = 0;
5151 switch_option = SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC;
5153 switch_option = SWITCH_IGNORE;
5155 while (p[len] && p[len] != ' ' && p[len] != '\t')
5158 if (p[len-1] == '*')
5161 for (i = 0; i < n_switches; i++)
5162 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5163 && (have_wildcard || switches[i].part1[len] == '\0'))
5165 switches[i].live_cond |= switch_option;
5166 switches[i].validated = 1;
5174 if (soft_matched_part)
5176 if (soft_matched_part[0])
5177 do_spec_1 (soft_matched_part, 1, NULL);
5178 do_spec_1 (" ", 0, NULL);
5181 /* Catch the case where a spec string contains something like
5182 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5183 hand side of the :. */
5184 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5187 /* Process a string found as the value of a spec given by name.
5188 This feature allows individual machine descriptions
5189 to add and use their own specs.
5190 %[...] modifies -D options the way %P does;
5191 %(...) uses the spec unmodified. */
5193 warning (0, "use of obsolete %%[ operator in specs");
5196 const char *name = p;
5197 struct spec_list *sl;
5200 /* The string after the S/P is the name of a spec that is to be
5202 while (*p && *p != ')' && *p != ']')
5205 /* See if it's in the list. */
5206 for (len = p - name, sl = specs; sl; sl = sl->next)
5207 if (sl->name_len == len && !strncmp (sl->name, name, len))
5209 name = *(sl->ptr_spec);
5211 fnotice (stderr, "Processing spec %c%s%c, which is '%s'\n",
5212 c, sl->name, (c == '(') ? ')' : ']', name);
5221 value = do_spec_1 (name, 0, NULL);
5227 char *x = (char *) alloca (strlen (name) * 2 + 1);
5229 const char *y = name;
5232 /* Copy all of NAME into BUF, but put __ after
5233 every -D and at the end of each arg. */
5236 if (! strncmp (y, "-D", 2))
5247 && (*y == ' ' || *y == '\t' || *y == '='
5248 || *y == '}' || *y == 0))
5261 value = do_spec_1 (buf, 0, NULL);
5267 /* Discard the closing paren or bracket. */
5274 error ("spec failure: unrecognized spec option %qc", c);
5280 /* Backslash: treat next character as ordinary. */
5285 /* Ordinary character: put it into the current argument. */
5286 obstack_1grow (&obstack, c);
5290 /* End of string. If we are processing a spec function, we need to
5291 end any pending argument. */
5292 if (processing_spec_function)
5298 /* Look up a spec function. */
5300 static const struct spec_function *
5301 lookup_spec_function (const char *name)
5303 const struct spec_function *sf;
5305 for (sf = static_spec_functions; sf->name != NULL; sf++)
5306 if (strcmp (sf->name, name) == 0)
5312 /* Evaluate a spec function. */
5315 eval_spec_function (const char *func, const char *args)
5317 const struct spec_function *sf;
5318 const char *funcval;
5320 /* Saved spec processing context. */
5321 VEC(const_char_p,heap) *save_argbuf;
5324 int save_delete_this_arg;
5325 int save_this_is_output_file;
5326 int save_this_is_library_file;
5327 int save_input_from_pipe;
5328 int save_this_is_linker_script;
5329 const char *save_suffix_subst;
5332 sf = lookup_spec_function (func);
5334 fatal_error ("unknown spec function %qs", func);
5336 /* Push the spec processing context. */
5337 save_argbuf = argbuf;
5339 save_arg_going = arg_going;
5340 save_delete_this_arg = delete_this_arg;
5341 save_this_is_output_file = this_is_output_file;
5342 save_this_is_library_file = this_is_library_file;
5343 save_this_is_linker_script = this_is_linker_script;
5344 save_input_from_pipe = input_from_pipe;
5345 save_suffix_subst = suffix_subst;
5347 /* Create a new spec processing context, and build the function
5351 if (do_spec_2 (args) < 0)
5352 fatal_error ("error in args to spec function %qs", func);
5354 /* argbuf_index is an index for the next argument to be inserted, and
5355 so contains the count of the args already inserted. */
5357 funcval = (*sf->func) (VEC_length (const_char_p, argbuf),
5358 VEC_address (const_char_p, argbuf));
5360 /* Pop the spec processing context. */
5361 VEC_free (const_char_p, heap, argbuf);
5362 argbuf = save_argbuf;
5364 arg_going = save_arg_going;
5365 delete_this_arg = save_delete_this_arg;
5366 this_is_output_file = save_this_is_output_file;
5367 this_is_library_file = save_this_is_library_file;
5368 this_is_linker_script = save_this_is_linker_script;
5369 input_from_pipe = save_input_from_pipe;
5370 suffix_subst = save_suffix_subst;
5375 /* Handle a spec function call of the form:
5379 ARGS is processed as a spec in a separate context and split into an
5380 argument vector in the normal fashion. The function returns a string
5381 containing a spec which we then process in the caller's context, or
5382 NULL if no processing is required. */
5385 handle_spec_function (const char *p)
5388 const char *endp, *funcval;
5391 processing_spec_function++;
5393 /* Get the function name. */
5394 for (endp = p; *endp != '\0'; endp++)
5396 if (*endp == '(') /* ) */
5398 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5399 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5400 fatal_error ("malformed spec function name");
5402 if (*endp != '(') /* ) */
5403 fatal_error ("no arguments for spec function");
5404 func = save_string (p, endp - p);
5407 /* Get the arguments. */
5408 for (count = 0; *endp != '\0'; endp++)
5417 else if (*endp == '(') /* ) */
5422 fatal_error ("malformed spec function arguments");
5423 args = save_string (p, endp - p);
5426 /* p now points to just past the end of the spec function expression. */
5428 funcval = eval_spec_function (func, args);
5429 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5435 processing_spec_function--;
5440 /* Inline subroutine of handle_braces. Returns true if the current
5441 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5443 input_suffix_matches (const char *atom, const char *end_atom)
5445 return (input_suffix
5446 && !strncmp (input_suffix, atom, end_atom - atom)
5447 && input_suffix[end_atom - atom] == '\0');
5450 /* Subroutine of handle_braces. Returns true if the current
5451 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5453 input_spec_matches (const char *atom, const char *end_atom)
5455 return (input_file_compiler
5456 && input_file_compiler->suffix
5457 && input_file_compiler->suffix[0] != '\0'
5458 && !strncmp (input_file_compiler->suffix + 1, atom,
5460 && input_file_compiler->suffix[end_atom - atom + 1] == '\0');
5463 /* Subroutine of handle_braces. Returns true if a switch
5464 matching the atom bracketed by ATOM and END_ATOM appeared on the
5467 switch_matches (const char *atom, const char *end_atom, int starred)
5470 int len = end_atom - atom;
5471 int plen = starred ? len : -1;
5473 for (i = 0; i < n_switches; i++)
5474 if (!strncmp (switches[i].part1, atom, len)
5475 && (starred || switches[i].part1[len] == '\0')
5476 && check_live_switch (i, plen))
5482 /* Inline subroutine of handle_braces. Mark all of the switches which
5483 match ATOM (extends to END_ATOM; STARRED indicates whether there
5484 was a star after the atom) for later processing. */
5486 mark_matching_switches (const char *atom, const char *end_atom, int starred)
5489 int len = end_atom - atom;
5490 int plen = starred ? len : -1;
5492 for (i = 0; i < n_switches; i++)
5493 if (!strncmp (switches[i].part1, atom, len)
5494 && (starred || switches[i].part1[len] == '\0')
5495 && check_live_switch (i, plen))
5496 switches[i].ordering = 1;
5499 /* Inline subroutine of handle_braces. Process all the currently
5500 marked switches through give_switch, and clear the marks. */
5502 process_marked_switches (void)
5506 for (i = 0; i < n_switches; i++)
5507 if (switches[i].ordering == 1)
5509 switches[i].ordering = 0;
5514 /* Handle a %{ ... } construct. P points just inside the leading {.
5515 Returns a pointer one past the end of the brace block, or 0
5516 if we call do_spec_1 and that returns -1. */
5519 handle_braces (const char *p)
5521 const char *atom, *end_atom;
5522 const char *d_atom = NULL, *d_end_atom = NULL;
5523 const char *orig = p;
5531 bool a_must_be_last = false;
5532 bool ordered_set = false;
5533 bool disjunct_set = false;
5534 bool disj_matched = false;
5535 bool disj_starred = true;
5536 bool n_way_choice = false;
5537 bool n_way_matched = false;
5539 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5546 /* Scan one "atom" (S in the description above of %{}, possibly
5547 with '!', '.', '@', ',', or '*' modifiers). */
5549 a_is_suffix = false;
5550 a_is_starred = false;
5551 a_is_negated = false;
5552 a_is_spectype = false;
5556 p++, a_is_negated = true;
5560 p++, a_is_suffix = true;
5562 p++, a_is_spectype = true;
5565 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5566 || *p == ',' || *p == '.' || *p == '@')
5571 p++, a_is_starred = 1;
5577 /* Substitute the switch(es) indicated by the current atom. */
5579 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5580 || a_is_spectype || atom == end_atom)
5583 mark_matching_switches (atom, end_atom, a_is_starred);
5586 process_marked_switches ();
5590 /* Substitute some text if the current atom appears as a switch
5592 disjunct_set = true;
5596 if (atom == end_atom)
5598 if (!n_way_choice || disj_matched || *p == '|'
5599 || a_is_negated || a_is_suffix || a_is_spectype
5603 /* An empty term may appear as the last choice of an
5604 N-way choice set; it means "otherwise". */
5605 a_must_be_last = true;
5606 disj_matched = !n_way_matched;
5607 disj_starred = false;
5611 if ((a_is_suffix || a_is_spectype) && a_is_starred)
5615 disj_starred = false;
5617 /* Don't bother testing this atom if we already have a
5619 if (!disj_matched && !n_way_matched)
5622 a_matched = input_suffix_matches (atom, end_atom);
5623 else if (a_is_spectype)
5624 a_matched = input_spec_matches (atom, end_atom);
5626 a_matched = switch_matches (atom, end_atom, a_is_starred);
5628 if (a_matched != a_is_negated)
5630 disj_matched = true;
5632 d_end_atom = end_atom;
5639 /* Found the body, that is, the text to substitute if the
5640 current disjunction matches. */
5641 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5642 disj_matched && !n_way_matched);
5646 /* If we have an N-way choice, reset state for the next
5650 n_way_choice = true;
5651 n_way_matched |= disj_matched;
5652 disj_matched = false;
5653 disj_starred = true;
5654 d_atom = d_end_atom = NULL;
5663 while (*p++ != '}');
5668 fatal_error ("braced spec %qs is invalid at %qc", orig, *p);
5673 /* Subroutine of handle_braces. Scan and process a brace substitution body
5674 (X in the description of %{} syntax). P points one past the colon;
5675 ATOM and END_ATOM bracket the first atom which was found to be true
5676 (present) in the current disjunction; STARRED indicates whether all
5677 the atoms in the current disjunction were starred (for syntax validation);
5678 MATCHED indicates whether the disjunction matched or not, and therefore
5679 whether or not the body is to be processed through do_spec_1 or just
5680 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5684 process_brace_body (const char *p, const char *atom, const char *end_atom,
5685 int starred, int matched)
5687 const char *body, *end_body;
5688 unsigned int nesting_level;
5689 bool have_subst = false;
5691 /* Locate the closing } or ;, honoring nested braces.
5692 Trim trailing whitespace. */
5701 if (!--nesting_level)
5704 else if (*p == ';' && nesting_level == 1)
5706 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
5708 else if (*p == '\0')
5714 while (end_body[-1] == ' ' || end_body[-1] == '\t')
5717 if (have_subst && !starred)
5722 /* Copy the substitution body to permanent storage and execute it.
5723 If have_subst is false, this is a simple matter of running the
5724 body through do_spec_1... */
5725 char *string = save_string (body, end_body - body);
5728 if (do_spec_1 (string, 0, NULL) < 0)
5733 /* ... but if have_subst is true, we have to process the
5734 body once for each matching switch, with %* set to the
5735 variant part of the switch. */
5736 unsigned int hard_match_len = end_atom - atom;
5739 for (i = 0; i < n_switches; i++)
5740 if (!strncmp (switches[i].part1, atom, hard_match_len)
5741 && check_live_switch (i, hard_match_len))
5743 if (do_spec_1 (string, 0,
5744 &switches[i].part1[hard_match_len]) < 0)
5746 /* Pass any arguments this switch has. */
5748 suffix_subst = NULL;
5756 fatal_error ("braced spec body %qs is invalid", body);
5759 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5760 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5761 spec, or -1 if either exact match or %* is used.
5763 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5764 whose value does not begin with "no-" is obsoleted by the same value
5765 with the "no-", similarly for a switch with the "no-" prefix. */
5768 check_live_switch (int switchnum, int prefix_length)
5770 const char *name = switches[switchnum].part1;
5773 /* If we already processed this switch and determined if it was
5774 live or not, return our past determination. */
5775 if (switches[switchnum].live_cond != 0)
5776 return ((switches[switchnum].live_cond & SWITCH_LIVE) != 0
5777 && (switches[switchnum].live_cond & SWITCH_FALSE) == 0
5778 && (switches[switchnum].live_cond & SWITCH_IGNORE_PERMANENTLY)
5781 /* In the common case of {<at-most-one-letter>*}, a negating
5782 switch would always match, so ignore that case. We will just
5783 send the conflicting switches to the compiler phase. */
5784 if (prefix_length >= 0 && prefix_length <= 1)
5787 /* Now search for duplicate in a manner that depends on the name. */
5791 for (i = switchnum + 1; i < n_switches; i++)
5792 if (switches[i].part1[0] == 'O')
5794 switches[switchnum].validated = 1;
5795 switches[switchnum].live_cond = SWITCH_FALSE;
5800 case 'W': case 'f': case 'm':
5801 if (! strncmp (name + 1, "no-", 3))
5803 /* We have Xno-YYY, search for XYYY. */
5804 for (i = switchnum + 1; i < n_switches; i++)
5805 if (switches[i].part1[0] == name[0]
5806 && ! strcmp (&switches[i].part1[1], &name[4]))
5808 switches[switchnum].validated = 1;
5809 switches[switchnum].live_cond = SWITCH_FALSE;
5815 /* We have XYYY, search for Xno-YYY. */
5816 for (i = switchnum + 1; i < n_switches; i++)
5817 if (switches[i].part1[0] == name[0]
5818 && switches[i].part1[1] == 'n'
5819 && switches[i].part1[2] == 'o'
5820 && switches[i].part1[3] == '-'
5821 && !strcmp (&switches[i].part1[4], &name[1]))
5823 switches[switchnum].validated = 1;
5824 switches[switchnum].live_cond = SWITCH_FALSE;
5831 /* Otherwise the switch is live. */
5832 switches[switchnum].live_cond |= SWITCH_LIVE;
5836 /* Pass a switch to the current accumulating command
5837 in the same form that we received it.
5838 SWITCHNUM identifies the switch; it is an index into
5839 the vector of switches gcc received, which is `switches'.
5840 This cannot fail since it never finishes a command line.
5842 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5845 give_switch (int switchnum, int omit_first_word)
5847 if ((switches[switchnum].live_cond & SWITCH_IGNORE) != 0)
5850 if (!omit_first_word)
5852 do_spec_1 ("-", 0, NULL);
5853 do_spec_1 (switches[switchnum].part1, 1, NULL);
5856 if (switches[switchnum].args != 0)
5859 for (p = switches[switchnum].args; *p; p++)
5861 const char *arg = *p;
5863 do_spec_1 (" ", 0, NULL);
5866 unsigned length = strlen (arg);
5869 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5870 if (arg[length] == '.')
5872 (CONST_CAST(char *, arg))[length] = 0;
5876 do_spec_1 (arg, 1, NULL);
5878 (CONST_CAST(char *, arg))[length] = '.';
5879 do_spec_1 (suffix_subst, 1, NULL);
5882 do_spec_1 (arg, 1, NULL);
5886 do_spec_1 (" ", 0, NULL);
5887 switches[switchnum].validated = 1;
5890 /* Search for a file named NAME trying various prefixes including the
5891 user's -B prefix and some standard ones.
5892 Return the absolute file name found. If nothing is found, return NAME. */
5895 find_file (const char *name)
5897 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true);
5898 return newname ? newname : name;
5901 /* Determine whether a directory exists. If LINKER, return 0 for
5902 certain fixed names not needed by the linker. */
5905 is_directory (const char *path1, bool linker)
5912 /* Ensure the string ends with "/.". The resulting path will be a
5913 directory even if the given path is a symbolic link. */
5914 len1 = strlen (path1);
5915 path = (char *) alloca (3 + len1);
5916 memcpy (path, path1, len1);
5918 if (!IS_DIR_SEPARATOR (cp[-1]))
5919 *cp++ = DIR_SEPARATOR;
5923 /* Exclude directories that the linker is known to search. */
5925 && IS_DIR_SEPARATOR (path[0])
5927 && strncmp (path + 1, "lib", 3) == 0)
5929 && strncmp (path + 1, "usr", 3) == 0
5930 && IS_DIR_SEPARATOR (path[4])
5931 && strncmp (path + 5, "lib", 3) == 0)))
5934 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5937 /* Set up the various global variables to indicate that we're processing
5938 the input file named FILENAME. */
5941 set_input (const char *filename)
5945 gcc_input_filename = filename;
5946 input_filename_length = strlen (gcc_input_filename);
5947 input_basename = lbasename (gcc_input_filename);
5949 /* Find a suffix starting with the last period,
5950 and set basename_length to exclude that suffix. */
5951 basename_length = strlen (input_basename);
5952 suffixed_basename_length = basename_length;
5953 p = input_basename + basename_length;
5954 while (p != input_basename && *p != '.')
5956 if (*p == '.' && p != input_basename)
5958 basename_length = p - input_basename;
5959 input_suffix = p + 1;
5964 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5965 we will need to do a stat on the gcc_input_filename. The
5966 INPUT_STAT_SET signals that the stat is needed. */
5970 /* On fatal signals, delete all the temporary files. */
5973 fatal_signal (int signum)
5975 signal (signum, SIG_DFL);
5976 delete_failure_queue ();
5977 delete_temp_files ();
5978 /* Get the same signal again, this time not handled,
5979 so its normal effect occurs. */
5980 kill (getpid (), signum);
5983 /* Compare the contents of the two files named CMPFILE[0] and
5984 CMPFILE[1]. Return zero if they're identical, nonzero
5988 compare_files (char *cmpfile[])
5991 FILE *temp[2] = { NULL, NULL };
5997 void *map[2] = { NULL, NULL };
5999 for (i = 0; i < 2; i++)
6003 if (stat (cmpfile[i], &st) < 0 || !S_ISREG (st.st_mode))
6005 error ("%s: could not determine length of compare-debug file %s",
6006 gcc_input_filename, cmpfile[i]);
6011 length[i] = st.st_size;
6014 if (!ret && length[0] != length[1])
6016 error ("%s: -fcompare-debug failure (length)", gcc_input_filename);
6021 for (i = 0; i < 2; i++)
6023 int fd = open (cmpfile[i], O_RDONLY);
6026 error ("%s: could not open compare-debug file %s",
6027 gcc_input_filename, cmpfile[i]);
6032 map[i] = mmap (NULL, length[i], PROT_READ, MAP_PRIVATE, fd, 0);
6035 if (map[i] == (void *) MAP_FAILED)
6044 if (memcmp (map[0], map[1], length[0]) != 0)
6046 error ("%s: -fcompare-debug failure", gcc_input_filename);
6051 for (i = 0; i < 2; i++)
6053 munmap ((caddr_t) map[i], length[i]);
6062 for (i = 0; i < 2; i++)
6064 temp[i] = fopen (cmpfile[i], "r");
6067 error ("%s: could not open compare-debug file %s",
6068 gcc_input_filename, cmpfile[i]);
6074 if (!ret && temp[0] && temp[1])
6078 c0 = fgetc (temp[0]);
6079 c1 = fgetc (temp[1]);
6083 error ("%s: -fcompare-debug failure",
6084 gcc_input_filename);
6093 for (i = 1; i >= 0; i--)
6102 extern int main (int, char **);
6105 main (int argc, char **argv)
6109 int linker_was_run = 0;
6110 int lang_n_infiles = 0;
6111 int num_linker_inputs = 0;
6112 char *explicit_link_files;
6114 char *lto_wrapper_file;
6116 struct user_specs *uptr;
6117 char **old_argv = argv;
6118 struct cl_decoded_option *decoded_options;
6119 unsigned int decoded_options_count;
6121 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
6122 on ?: in file-scope variable initializations. */
6123 asm_debug = ASM_DEBUG_SPEC;
6125 p = argv[0] + strlen (argv[0]);
6126 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
6130 xmalloc_set_program_name (progname);
6132 expandargv (&argc, &argv);
6134 /* Determine if any expansions were made. */
6135 if (argv != old_argv)
6136 at_file_supplied = true;
6138 global_options = global_options_init;
6140 decode_cmdline_options_to_array (argc, CONST_CAST2 (const char **, char **,
6143 &decoded_options, &decoded_options_count);
6145 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6146 /* Perform host dependent initialization when needed. */
6147 GCC_DRIVER_HOST_INITIALIZATION;
6150 /* Unlock the stdio streams. */
6151 unlock_std_streams ();
6153 gcc_init_libintl ();
6155 diagnostic_initialize (global_dc, 0);
6156 if (atexit (delete_temp_files) != 0)
6157 fatal_error ("atexit failed");
6159 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
6160 signal (SIGINT, fatal_signal);
6162 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
6163 signal (SIGHUP, fatal_signal);
6165 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
6166 signal (SIGTERM, fatal_signal);
6168 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
6169 signal (SIGPIPE, fatal_signal);
6172 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6173 receive the signal. A different setting is inheritable */
6174 signal (SIGCHLD, SIG_DFL);
6177 /* Allocate the argument vector. */
6180 obstack_init (&obstack);
6182 /* Build multilib_select, et. al from the separate lines that make up each
6183 multilib selection. */
6185 const char *const *q = multilib_raw;
6188 obstack_init (&multilib_obstack);
6189 while ((p = *q++) != (char *) 0)
6190 obstack_grow (&multilib_obstack, p, strlen (p));
6192 obstack_1grow (&multilib_obstack, 0);
6193 multilib_select = XOBFINISH (&multilib_obstack, const char *);
6195 q = multilib_matches_raw;
6196 while ((p = *q++) != (char *) 0)
6197 obstack_grow (&multilib_obstack, p, strlen (p));
6199 obstack_1grow (&multilib_obstack, 0);
6200 multilib_matches = XOBFINISH (&multilib_obstack, const char *);
6202 q = multilib_exclusions_raw;
6203 while ((p = *q++) != (char *) 0)
6204 obstack_grow (&multilib_obstack, p, strlen (p));
6206 obstack_1grow (&multilib_obstack, 0);
6207 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *);
6210 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
6213 obstack_1grow (&multilib_obstack, ' ');
6214 obstack_grow (&multilib_obstack,
6215 multilib_defaults_raw[i],
6216 strlen (multilib_defaults_raw[i]));
6220 obstack_1grow (&multilib_obstack, 0);
6221 multilib_defaults = XOBFINISH (&multilib_obstack, const char *);
6224 #ifdef INIT_ENVIRONMENT
6225 /* Set up any other necessary machine specific environment variables. */
6226 xputenv (INIT_ENVIRONMENT);
6229 /* Make a table of what switches there are (switches, n_switches).
6230 Make a table of specified input files (infiles, n_infiles).
6231 Decode switches that are handled locally. */
6233 process_command (decoded_options_count, decoded_options);
6235 /* Initialize the vector of specs to just the default.
6236 This means one element containing 0s, as a terminator. */
6238 compilers = XNEWVAR (struct compiler, sizeof default_compilers);
6239 memcpy (compilers, default_compilers, sizeof default_compilers);
6240 n_compilers = n_default_compilers;
6242 /* Read specs from a file if there is one. */
6244 machine_suffix = concat (spec_machine, dir_separator_str,
6245 spec_version, dir_separator_str, NULL);
6246 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6248 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true);
6249 /* Read the specs file unless it is a default one. */
6250 if (specs_file != 0 && strcmp (specs_file, "specs"))
6251 read_specs (specs_file, TRUE);
6255 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6256 for any override of as, ld and libraries. */
6257 specs_file = (char *) alloca (strlen (standard_exec_prefix)
6258 + strlen (just_machine_suffix) + sizeof ("specs"));
6260 strcpy (specs_file, standard_exec_prefix);
6261 strcat (specs_file, just_machine_suffix);
6262 strcat (specs_file, "specs");
6263 if (access (specs_file, R_OK) == 0)
6264 read_specs (specs_file, TRUE);
6266 /* Process any configure-time defaults specified for the command line
6267 options, via OPTION_DEFAULT_SPECS. */
6268 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6269 do_option_spec (option_default_specs[i].name,
6270 option_default_specs[i].spec);
6272 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6273 of the command line. */
6275 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6276 do_self_spec (driver_self_specs[i]);
6280 enum save_temps save;
6282 if (!compare_debug_second)
6284 n_switches_debug_check[1] = n_switches;
6285 n_switches_alloc_debug_check[1] = n_switches_alloc;
6286 switches_debug_check[1] = XDUPVEC (struct switchstr, switches,
6289 do_self_spec ("%:compare-debug-self-opt()");
6290 n_switches_debug_check[0] = n_switches;
6291 n_switches_alloc_debug_check[0] = n_switches_alloc;
6292 switches_debug_check[0] = switches;
6294 n_switches = n_switches_debug_check[1];
6295 n_switches_alloc = n_switches_alloc_debug_check[1];
6296 switches = switches_debug_check[1];
6299 /* Avoid crash when computing %j in this early. */
6300 save = save_temps_flag;
6301 save_temps_flag = SAVE_TEMPS_NONE;
6303 compare_debug = -compare_debug;
6304 do_self_spec ("%:compare-debug-self-opt()");
6306 save_temps_flag = save;
6308 if (!compare_debug_second)
6310 n_switches_debug_check[1] = n_switches;
6311 n_switches_alloc_debug_check[1] = n_switches_alloc;
6312 switches_debug_check[1] = switches;
6313 compare_debug = -compare_debug;
6314 n_switches = n_switches_debug_check[0];
6315 n_switches_alloc = n_switches_debug_check[0];
6316 switches = switches_debug_check[0];
6320 /* If not cross-compiling, look for executables in the standard
6322 if (*cross_compile == '0')
6324 if (*md_exec_prefix)
6326 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6327 PREFIX_PRIORITY_LAST, 0, 0);
6331 /* Process sysroot_suffix_spec. */
6332 if (*sysroot_suffix_spec != 0
6333 && do_spec_2 (sysroot_suffix_spec) == 0)
6335 if (VEC_length (const_char_p, argbuf) > 1)
6336 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6337 else if (VEC_length (const_char_p, argbuf) == 1)
6338 target_sysroot_suffix = xstrdup (VEC_last (const_char_p, argbuf));
6341 #ifdef HAVE_LD_SYSROOT
6342 /* Pass the --sysroot option to the linker, if it supports that. If
6343 there is a sysroot_suffix_spec, it has already been processed by
6344 this point, so target_system_root really is the system root we
6346 if (target_system_root)
6348 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6349 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
6350 set_spec ("link", XOBFINISH (&obstack, const char *));
6354 /* Process sysroot_hdrs_suffix_spec. */
6355 if (*sysroot_hdrs_suffix_spec != 0
6356 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6358 if (VEC_length (const_char_p, argbuf) > 1)
6359 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6360 else if (VEC_length (const_char_p, argbuf) == 1)
6361 target_sysroot_hdrs_suffix = xstrdup (VEC_last (const_char_p, argbuf));
6364 /* Look for startfiles in the standard places. */
6365 if (*startfile_prefix_spec != 0
6366 && do_spec_2 (startfile_prefix_spec) == 0
6367 && do_spec_1 (" ", 0, NULL) == 0)
6371 FOR_EACH_VEC_ELT (const_char_p, argbuf, ndx, arg)
6372 add_sysrooted_prefix (&startfile_prefixes, arg, "BINUTILS",
6373 PREFIX_PRIORITY_LAST, 0, 1);
6375 /* We should eventually get rid of all these and stick to
6376 startfile_prefix_spec exclusively. */
6377 else if (*cross_compile == '0' || target_system_root)
6379 if (*md_startfile_prefix)
6380 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6381 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6383 if (*md_startfile_prefix_1)
6384 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6385 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6387 /* If standard_startfile_prefix is relative, base it on
6388 standard_exec_prefix. This lets us move the installed tree
6389 as a unit. If GCC_EXEC_PREFIX is defined, base
6390 standard_startfile_prefix on that as well.
6392 If the prefix is relative, only search it for native compilers;
6393 otherwise we will search a directory containing host libraries. */
6394 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
6395 add_sysrooted_prefix (&startfile_prefixes,
6396 standard_startfile_prefix, "BINUTILS",
6397 PREFIX_PRIORITY_LAST, 0, 1);
6398 else if (*cross_compile == '0')
6400 add_prefix (&startfile_prefixes,
6401 concat (gcc_exec_prefix
6402 ? gcc_exec_prefix : standard_exec_prefix,
6404 standard_startfile_prefix, NULL),
6405 NULL, PREFIX_PRIORITY_LAST, 0, 1);
6408 /* Sysrooted prefixes are relocated because target_system_root is
6409 also relocated by gcc_exec_prefix. */
6410 if (*standard_startfile_prefix_1)
6411 add_sysrooted_prefix (&startfile_prefixes,
6412 standard_startfile_prefix_1, "BINUTILS",
6413 PREFIX_PRIORITY_LAST, 0, 1);
6414 if (*standard_startfile_prefix_2)
6415 add_sysrooted_prefix (&startfile_prefixes,
6416 standard_startfile_prefix_2, "BINUTILS",
6417 PREFIX_PRIORITY_LAST, 0, 1);
6420 /* Process any user specified specs in the order given on the command
6422 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6424 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6426 read_specs (filename ? filename : uptr->filename, FALSE);
6429 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6430 if (gcc_exec_prefix)
6431 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6432 spec_version, dir_separator_str, NULL);
6434 /* Now we have the specs.
6435 Set the `valid' bits for switches that match anything in any spec. */
6437 validate_all_switches ();
6439 /* Now that we have the switches and the specs, set
6440 the subdirectory based on the options. */
6441 set_multilib_dir ();
6443 /* Set up to remember the pathname of gcc and any options
6444 needed for collect. We use argv[0] instead of progname because
6445 we need the complete pathname. */
6446 obstack_init (&collect_obstack);
6447 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6448 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6449 xputenv (XOBFINISH (&collect_obstack, char *));
6451 /* Set up to remember the pathname of the lto wrapper. */
6453 lto_wrapper_file = find_a_file (&exec_prefixes, "lto-wrapper", X_OK, false);
6454 if (lto_wrapper_file)
6456 lto_wrapper_spec = lto_wrapper_file;
6457 obstack_init (&collect_obstack);
6458 obstack_grow (&collect_obstack, "COLLECT_LTO_WRAPPER=",
6459 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
6460 obstack_grow (&collect_obstack, lto_wrapper_spec,
6461 strlen (lto_wrapper_spec) + 1);
6462 xputenv (XOBFINISH (&collect_obstack, char *));
6465 /* Warn about any switches that no pass was interested in. */
6467 for (i = 0; (int) i < n_switches; i++)
6468 if (! switches[i].validated)
6469 error ("unrecognized option %<-%s%>", switches[i].part1);
6471 /* Obey some of the options. */
6473 if (print_search_dirs)
6475 printf (_("install: %s%s\n"),
6476 gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
6477 gcc_exec_prefix ? "" : machine_suffix);
6478 printf (_("programs: %s\n"),
6479 build_search_list (&exec_prefixes, "", false, false));
6480 printf (_("libraries: %s\n"),
6481 build_search_list (&startfile_prefixes, "", false, true));
6485 if (print_file_name)
6487 printf ("%s\n", find_file (print_file_name));
6491 if (print_prog_name)
6493 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6494 printf ("%s\n", (newname ? newname : print_prog_name));
6498 if (print_multi_lib)
6500 print_multilib_info ();
6504 if (print_multi_directory)
6506 if (multilib_dir == NULL)
6509 printf ("%s\n", multilib_dir);
6515 if (target_system_root)
6517 if (target_sysroot_suffix)
6518 printf ("%s%s\n", target_system_root, target_sysroot_suffix);
6520 printf ("%s\n", target_system_root);
6525 if (print_multi_os_directory)
6527 if (multilib_os_dir == NULL)
6530 printf ("%s\n", multilib_os_dir);
6534 if (print_sysroot_headers_suffix)
6536 if (*sysroot_hdrs_suffix_spec)
6538 printf("%s\n", (target_sysroot_hdrs_suffix
6539 ? target_sysroot_hdrs_suffix
6544 /* The error status indicates that only one set of fixed
6545 headers should be built. */
6546 fatal_error ("not configured with sysroot headers suffix");
6549 if (print_help_list)
6555 printf (_("\nFor bug reporting instructions, please see:\n"));
6556 printf ("%s.\n", bug_report_url);
6561 /* We do not exit here. Instead we have created a fake input file
6562 called 'help-dummy' which needs to be compiled, and we pass this
6563 on the various sub-processes, along with the --help switch.
6564 Ensure their output appears after ours. */
6565 fputc ('\n', stdout);
6571 printf (_("%s %s%s\n"), progname, pkgversion_string,
6573 printf ("Copyright %s 2011 Free Software Foundation, Inc.\n",
6575 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
6576 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
6581 /* We do not exit here. We use the same mechanism of --help to print
6582 the version of the sub-processes. */
6583 fputc ('\n', stdout);
6592 fnotice (stderr, "Target: %s\n", spec_machine);
6593 fnotice (stderr, "Configured with: %s\n", configuration_arguments);
6595 #ifdef THREAD_MODEL_SPEC
6596 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6597 but there's no point in doing all this processing just to get
6598 thread_model back. */
6599 obstack_init (&obstack);
6600 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6601 obstack_1grow (&obstack, '\0');
6602 thrmod = XOBFINISH (&obstack, const char *);
6604 thrmod = thread_model;
6607 fnotice (stderr, "Thread model: %s\n", thrmod);
6609 /* compiler_version is truncated at the first space when initialized
6610 from version string, so truncate version_string at the first space
6611 before comparing. */
6612 for (n = 0; version_string[n]; n++)
6613 if (version_string[n] == ' ')
6616 if (! strncmp (version_string, compiler_version, n)
6617 && compiler_version[n] == 0)
6618 fnotice (stderr, "gcc version %s %s\n", version_string,
6621 fnotice (stderr, "gcc driver version %s %sexecuting gcc version %s\n",
6622 version_string, pkgversion_string, compiler_version);
6628 if (n_infiles == added_libraries)
6629 fatal_error ("no input files");
6634 /* Make a place to record the compiler output file names
6635 that correspond to the input files. */
6638 i += lang_specific_extra_outfiles;
6639 outfiles = XCNEWVEC (const char *, i);
6641 /* Record which files were specified explicitly as link input. */
6643 explicit_link_files = XCNEWVEC (char, n_infiles);
6645 combine_inputs = have_o || flag_wpa;
6647 for (i = 0; (int) i < n_infiles; i++)
6649 const char *name = infiles[i].name;
6650 struct compiler *compiler = lookup_compiler (name,
6652 infiles[i].language);
6654 if (compiler && !(compiler->combinable))
6655 combine_inputs = false;
6657 if (lang_n_infiles > 0 && compiler != input_file_compiler
6658 && infiles[i].language && infiles[i].language[0] != '*')
6659 infiles[i].incompiler = compiler;
6663 input_file_compiler = compiler;
6664 infiles[i].incompiler = compiler;
6668 /* Since there is no compiler for this input file, assume it is a
6670 explicit_link_files[i] = 1;
6671 infiles[i].incompiler = NULL;
6673 infiles[i].compiled = false;
6674 infiles[i].preprocessed = false;
6677 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1)
6678 fatal_error ("cannot specify -o with -c, -S or -E with multiple files");
6680 for (i = 0; (int) i < n_infiles; i++)
6682 int this_file_error = 0;
6684 /* Tell do_spec what to substitute for %i. */
6686 input_file_number = i;
6687 set_input (infiles[i].name);
6689 if (infiles[i].compiled)
6692 /* Use the same thing in %o, unless cp->spec says otherwise. */
6694 outfiles[i] = gcc_input_filename;
6696 /* Figure out which compiler from the file's suffix. */
6699 = lookup_compiler (infiles[i].name, input_filename_length,
6700 infiles[i].language);
6702 if (input_file_compiler)
6704 /* Ok, we found an applicable compiler. Run its spec. */
6706 if (input_file_compiler->spec[0] == '#')
6708 error ("%s: %s compiler not installed on this system",
6709 gcc_input_filename, &input_file_compiler->spec[1]);
6710 this_file_error = 1;
6716 if (debug_check_temp_file[0])
6717 free (debug_check_temp_file[0]);
6718 debug_check_temp_file[0] = NULL;
6720 if (debug_check_temp_file[1])
6721 free (debug_check_temp_file[1]);
6722 debug_check_temp_file[1] = NULL;
6725 value = do_spec (input_file_compiler->spec);
6726 infiles[i].compiled = true;
6728 this_file_error = 1;
6729 else if (compare_debug && debug_check_temp_file[0])
6732 inform (0, "recompiling with -fcompare-debug");
6734 compare_debug = -compare_debug;
6735 n_switches = n_switches_debug_check[1];
6736 n_switches_alloc = n_switches_alloc_debug_check[1];
6737 switches = switches_debug_check[1];
6739 value = do_spec (input_file_compiler->spec);
6741 compare_debug = -compare_debug;
6742 n_switches = n_switches_debug_check[0];
6743 n_switches_alloc = n_switches_alloc_debug_check[0];
6744 switches = switches_debug_check[0];
6748 error ("during -fcompare-debug recompilation");
6749 this_file_error = 1;
6752 gcc_assert (debug_check_temp_file[1]
6753 && strcmp (debug_check_temp_file[0],
6754 debug_check_temp_file[1]));
6757 inform (0, "comparing final insns dumps");
6759 if (compare_files (debug_check_temp_file))
6760 this_file_error = 1;
6765 if (debug_check_temp_file[0])
6766 free (debug_check_temp_file[0]);
6767 debug_check_temp_file[0] = NULL;
6769 if (debug_check_temp_file[1])
6770 free (debug_check_temp_file[1]);
6771 debug_check_temp_file[1] = NULL;
6776 /* If this file's name does not contain a recognized suffix,
6777 record it as explicit linker input. */
6780 explicit_link_files[i] = 1;
6782 /* Clear the delete-on-failure queue, deleting the files in it
6783 if this compilation failed. */
6785 if (this_file_error)
6787 delete_failure_queue ();
6790 /* If this compilation succeeded, don't delete those files later. */
6791 clear_failure_queue ();
6794 /* Reset the input file name to the first compile/object file name, for use
6795 with %b in LINK_SPEC. We use the first input file that we can find
6796 a compiler to compile it instead of using infiles.language since for
6797 languages other than C we use aliases that we then lookup later. */
6802 for (i = 0; i < n_infiles ; i++)
6803 if (infiles[i].incompiler
6804 || (infiles[i].language && infiles[i].language[0] != '*'))
6806 set_input (infiles[i].name);
6813 /* Make sure INPUT_FILE_NUMBER points to first available open
6815 input_file_number = n_infiles;
6816 if (lang_specific_pre_link ())
6820 /* Determine if there are any linker input files. */
6821 num_linker_inputs = 0;
6822 for (i = 0; (int) i < n_infiles; i++)
6823 if (explicit_link_files[i] || outfiles[i] != NULL)
6824 num_linker_inputs++;
6826 /* Run ld to link all the compiler output files. */
6828 if (num_linker_inputs > 0 && !seen_error () && print_subprocess_help < 2)
6830 int tmp = execution_count;
6831 #if HAVE_LTO_PLUGIN > 0
6832 #if HAVE_LTO_PLUGIN == 2
6833 const char *fno_use_linker_plugin = "fno-use-linker-plugin";
6835 const char *fuse_linker_plugin = "fuse-linker-plugin";
6839 /* We'll use ld if we can't find collect2. */
6840 if (! strcmp (linker_name_spec, "collect2"))
6842 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false);
6844 linker_name_spec = "ld";
6847 #if HAVE_LTO_PLUGIN > 0
6848 #if HAVE_LTO_PLUGIN == 2
6849 if (!switch_matches (fno_use_linker_plugin,
6850 fno_use_linker_plugin + strlen (fno_use_linker_plugin), 0))
6852 if (switch_matches (fuse_linker_plugin,
6853 fuse_linker_plugin + strlen (fuse_linker_plugin), 0))
6856 linker_plugin_file_spec = find_a_file (&exec_prefixes,
6857 LTOPLUGINSONAME, R_OK,
6859 if (!linker_plugin_file_spec)
6860 fatal_error ("-fuse-linker-plugin, but " LTOPLUGINSONAME " not found");
6863 lto_gcc_spec = argv[0];
6865 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6867 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false);
6868 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true);
6870 if (print_subprocess_help == 1)
6872 printf (_("\nLinker options\n==============\n\n"));
6873 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
6874 " to the linker.\n\n"));
6877 value = do_spec (link_command_spec);
6880 linker_was_run = (tmp != execution_count);
6883 /* If options said don't run linker,
6884 complain about input files to be given to the linker. */
6886 if (! linker_was_run && !seen_error ())
6887 for (i = 0; (int) i < n_infiles; i++)
6888 if (explicit_link_files[i]
6889 && !(infiles[i].language && infiles[i].language[0] == '*'))
6890 warning (0, "%s: linker input file unused because linking not done",
6893 /* Delete some or all of the temporary files we made. */
6896 delete_failure_queue ();
6897 delete_temp_files ();
6899 if (print_help_list)
6901 printf (("\nFor bug reporting instructions, please see:\n"));
6902 printf ("%s\n", bug_report_url);
6906 return (signal_count != 0 ? 2
6907 : seen_error () ? (pass_exit_codes ? greatest_status : 1)
6911 /* Find the proper compilation spec for the file name NAME,
6912 whose length is LENGTH. LANGUAGE is the specified language,
6913 or 0 if this file is to be passed to the linker. */
6915 static struct compiler *
6916 lookup_compiler (const char *name, size_t length, const char *language)
6918 struct compiler *cp;
6920 /* If this was specified by the user to be a linker input, indicate that. */
6921 if (language != 0 && language[0] == '*')
6924 /* Otherwise, look for the language, if one is spec'd. */
6927 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6928 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6931 error ("language %s not recognized", language);
6935 /* Look for a suffix. */
6936 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6938 if (/* The suffix `-' matches only the file name `-'. */
6939 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6940 || (strlen (cp->suffix) < length
6941 /* See if the suffix matches the end of NAME. */
6942 && !strcmp (cp->suffix,
6943 name + length - strlen (cp->suffix))
6948 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6949 /* Look again, but case-insensitively this time. */
6951 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6953 if (/* The suffix `-' matches only the file name `-'. */
6954 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6955 || (strlen (cp->suffix) < length
6956 /* See if the suffix matches the end of NAME. */
6957 && ((!strcmp (cp->suffix,
6958 name + length - strlen (cp->suffix))
6959 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6960 && !strcasecmp (cp->suffix,
6961 name + length - strlen (cp->suffix)))
6967 if (cp >= compilers)
6969 if (cp->spec[0] != '@')
6970 /* A non-alias entry: return it. */
6973 /* An alias entry maps a suffix to a language.
6974 Search for the language; pass 0 for NAME and LENGTH
6975 to avoid infinite recursion if language not found. */
6976 return lookup_compiler (NULL, 0, cp->spec + 1);
6982 save_string (const char *s, int len)
6984 char *result = XNEWVEC (char, len + 1);
6986 memcpy (result, s, len);
6992 pfatal_with_name (const char *name)
6994 perror_with_name (name);
6995 delete_temp_files ();
7000 perror_with_name (const char *name)
7002 error ("%s: %m", name);
7006 validate_switches_from_spec (const char *spec)
7008 const char *p = spec;
7011 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
7012 /* We have a switch spec. */
7013 p = validate_switches (p + 1);
7017 validate_all_switches (void)
7019 struct compiler *comp;
7020 struct spec_list *spec;
7022 for (comp = compilers; comp->spec; comp++)
7023 validate_switches_from_spec (comp->spec);
7025 /* Look through the linked list of specs read from the specs file. */
7026 for (spec = specs; spec; spec = spec->next)
7027 validate_switches_from_spec (*spec->ptr_spec);
7029 validate_switches_from_spec (link_command_spec);
7032 /* Look at the switch-name that comes after START
7033 and mark as valid all supplied switches that match it. */
7036 validate_switches (const char *start)
7038 const char *p = start;
7042 bool suffix = false;
7043 bool starred = false;
7045 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7054 if (*p == '.' || *p == ',')
7058 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
7059 || *p == ',' || *p == '.' || *p == '@')
7064 starred = true, p++;
7070 /* Mark all matching switches as valid. */
7071 for (i = 0; i < n_switches; i++)
7072 if (!strncmp (switches[i].part1, atom, len)
7073 && (starred || switches[i].part1[len] == 0))
7074 switches[i].validated = 1;
7078 if (*p && (p[-1] == '|' || p[-1] == '&'))
7081 if (*p && p[-1] == ':')
7083 while (*p && *p != ';' && *p != '}')
7088 if (*p == '{' || *p == '<')
7089 p = validate_switches (p+1);
7090 else if (p[0] == 'W' && p[1] == '{')
7091 p = validate_switches (p+2);
7098 if (*p && p[-1] == ';')
7112 static struct mdswitchstr *mdswitches;
7113 static int n_mdswitches;
7115 /* Check whether a particular argument was used. The first time we
7116 canonicalize the switches to keep only the ones we care about. */
7119 used_arg (const char *p, int len)
7124 const char *replace;
7129 static struct mswitchstr *mswitches;
7130 static int n_mswitches;
7135 struct mswitchstr *matches;
7139 /* Break multilib_matches into the component strings of string
7140 and replacement string. */
7141 for (q = multilib_matches; *q != '\0'; q++)
7146 = (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
7148 q = multilib_matches;
7157 fatal_error ("multilib spec %qs is invalid",
7162 matches[i].len = q - matches[i].str;
7164 matches[i].replace = ++q;
7165 while (*q != ';' && *q != '\0')
7168 goto invalid_matches;
7171 matches[i].rep_len = q - matches[i].replace;
7177 /* Now build a list of the replacement string for switches that we care
7178 about. Make sure we allocate at least one entry. This prevents
7179 xmalloc from calling fatal, and prevents us from re-executing this
7182 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1));
7183 for (i = 0; i < n_switches; i++)
7184 if ((switches[i].live_cond & SWITCH_IGNORE) == 0)
7186 int xlen = strlen (switches[i].part1);
7187 for (j = 0; j < cnt; j++)
7188 if (xlen == matches[j].len
7189 && ! strncmp (switches[i].part1, matches[j].str, xlen))
7191 mswitches[n_mswitches].str = matches[j].replace;
7192 mswitches[n_mswitches].len = matches[j].rep_len;
7193 mswitches[n_mswitches].replace = (char *) 0;
7194 mswitches[n_mswitches].rep_len = 0;
7200 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7201 on the command line nor any options mutually incompatible with
7203 for (i = 0; i < n_mdswitches; i++)
7207 for (q = multilib_options; *q != '\0'; q++)
7213 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
7214 || strchr (" /", q[mdswitches[i].len]) == NULL)
7216 while (*q != ' ' && *q != '/' && *q != '\0')
7223 if (*q != ' ' && *q != '\0')
7225 while (*r != ' ' && *r != '\0')
7228 while (*q != ' ' && *q != '/' && *q != '\0')
7231 if (used_arg (r, q - r))
7236 mswitches[n_mswitches].str = mdswitches[i].str;
7237 mswitches[n_mswitches].len = mdswitches[i].len;
7238 mswitches[n_mswitches].replace = (char *) 0;
7239 mswitches[n_mswitches].rep_len = 0;
7252 for (i = 0; i < n_mswitches; i++)
7253 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
7260 default_arg (const char *p, int len)
7264 for (i = 0; i < n_mdswitches; i++)
7265 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
7271 /* Work out the subdirectory to use based on the options. The format of
7272 multilib_select is a list of elements. Each element is a subdirectory
7273 name followed by a list of options followed by a semicolon. The format
7274 of multilib_exclusions is the same, but without the preceding
7275 directory. First gcc will check the exclusions, if none of the options
7276 beginning with an exclamation point are present, and all of the other
7277 options are present, then we will ignore this completely. Passing
7278 that, gcc will consider each multilib_select in turn using the same
7279 rules for matching the options. If a match is found, that subdirectory
7283 set_multilib_dir (void)
7286 unsigned int this_path_len;
7287 const char *this_path, *this_arg;
7288 const char *start, *end;
7290 int ok, ndfltok, first;
7293 start = multilib_defaults;
7294 while (*start == ' ' || *start == '\t')
7296 while (*start != '\0')
7299 while (*start != ' ' && *start != '\t' && *start != '\0')
7301 while (*start == ' ' || *start == '\t')
7309 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches);
7310 for (start = multilib_defaults; *start != '\0'; start = end + 1)
7312 while (*start == ' ' || *start == '\t')
7318 for (end = start + 1;
7319 *end != ' ' && *end != '\t' && *end != '\0'; end++)
7322 obstack_grow (&multilib_obstack, start, end - start);
7323 obstack_1grow (&multilib_obstack, 0);
7324 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *);
7325 mdswitches[i++].len = end - start;
7332 p = multilib_exclusions;
7335 /* Ignore newlines. */
7342 /* Check the arguments. */
7349 fatal_error ("multilib exclusions %qs is invalid",
7350 multilib_exclusions);
7360 while (*p != ' ' && *p != ';')
7363 goto invalid_exclusions;
7367 if (*this_arg != '!')
7375 ok = used_arg (this_arg, p - this_arg);
7390 p = multilib_select;
7393 /* Ignore newlines. */
7400 /* Get the initial path. */
7407 fatal_error ("multilib select %qs is invalid",
7412 this_path_len = p - this_path;
7414 /* Check the arguments. */
7421 goto invalid_select;
7430 while (*p != ' ' && *p != ';')
7433 goto invalid_select;
7437 if (*this_arg != '!')
7445 /* If this is a default argument, we can just ignore it.
7446 This is true even if this_arg begins with '!'. Beginning
7447 with '!' does not mean that this argument is necessarily
7448 inappropriate for this library: it merely means that
7449 there is a more specific library which uses this
7450 argument. If this argument is a default, we need not
7451 consider that more specific library. */
7452 ok = used_arg (this_arg, p - this_arg);
7459 if (default_arg (this_arg, p - this_arg))
7468 if (this_path_len != 1
7469 || this_path[0] != '.')
7471 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1);
7474 strncpy (new_multilib_dir, this_path, this_path_len);
7475 new_multilib_dir[this_path_len] = '\0';
7476 q = strchr (new_multilib_dir, ':');
7479 multilib_dir = new_multilib_dir;
7486 const char *q = this_path, *end = this_path + this_path_len;
7488 while (q < end && *q != ':')
7492 char *new_multilib_os_dir = XNEWVEC (char, end - q);
7493 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
7494 new_multilib_os_dir[end - q - 1] = '\0';
7495 multilib_os_dir = new_multilib_os_dir;
7503 if (multilib_dir == NULL && multilib_os_dir != NULL
7504 && strcmp (multilib_os_dir, ".") == 0)
7506 free (CONST_CAST (char *, multilib_os_dir));
7507 multilib_os_dir = NULL;
7509 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7510 multilib_os_dir = multilib_dir;
7513 /* Print out the multiple library subdirectory selection
7514 information. This prints out a series of lines. Each line looks
7515 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7516 required. Only the desired options are printed out, the negative
7517 matches. The options are print without a leading dash. There are
7518 no spaces to make it easy to use the information in the shell.
7519 Each subdirectory is printed only once. This assumes the ordering
7520 generated by the genmultilib script. Also, we leave out ones that match
7524 print_multilib_info (void)
7526 const char *p = multilib_select;
7527 const char *last_path = 0, *this_path;
7529 unsigned int last_path_len = 0;
7534 /* Ignore newlines. */
7541 /* Get the initial path. */
7548 fatal_error ("multilib select %qs is invalid", multilib_select);
7554 /* When --disable-multilib was used but target defines
7555 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7556 to find multilib_os_dir, so skip them from output. */
7557 if (this_path[0] == '.' && this_path[1] == ':')
7560 /* Check for matches with the multilib_exclusions. We don't bother
7561 with the '!' in either list. If any of the exclusion rules match
7562 all of its options with the select rule, we skip it. */
7564 const char *e = multilib_exclusions;
7565 const char *this_arg;
7570 /* Ignore newlines. */
7577 /* Check the arguments. */
7586 fatal_error ("multilib exclusion %qs is invalid",
7587 multilib_exclusions);
7598 while (*e != ' ' && *e != ';')
7601 goto invalid_exclusion;
7609 int len = e - this_arg;
7612 goto invalid_select;
7616 while (*q != ' ' && *q != ';')
7619 goto invalid_select;
7623 if (! strncmp (arg, this_arg,
7624 (len < q - arg) ? q - arg : len)
7625 || default_arg (this_arg, e - this_arg))
7655 /* If this is a duplicate, skip it. */
7656 skip = (last_path != 0
7657 && (unsigned int) (p - this_path) == last_path_len
7658 && ! strncmp (last_path, this_path, last_path_len));
7660 last_path = this_path;
7661 last_path_len = p - this_path;
7664 /* If this directory requires any default arguments, we can skip
7665 it. We will already have printed a directory identical to
7666 this one which does not require that default argument. */
7677 goto invalid_select;
7684 while (*q != ' ' && *q != ';')
7687 goto invalid_select;
7692 && default_arg (arg, q - arg))
7707 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7718 goto invalid_select;
7726 use_arg = *p != '!';
7731 while (*p != ' ' && *p != ';')
7734 goto invalid_select;
7746 /* If there are extra options, print them now. */
7747 if (multilib_extra && *multilib_extra)
7749 int print_at = TRUE;
7752 for (q = multilib_extra; *q != '\0'; q++)
7773 /* getenv built-in spec function.
7775 Returns the value of the environment variable given by its first
7776 argument, concatenated with the second argument. If the
7777 environment variable is not defined, a fatal error is issued. */
7780 getenv_spec_function (int argc, const char **argv)
7790 value = getenv (argv[0]);
7792 fatal_error ("environment variable %qs not defined", argv[0]);
7794 /* We have to escape every character of the environment variable so
7795 they are not interpreted as active spec characters. A
7796 particularly painful case is when we are reading a variable
7797 holding a windows path complete with \ separators. */
7798 len = strlen (value) * 2 + strlen (argv[1]) + 1;
7799 result = XNEWVAR (char, len);
7800 for (ptr = result; *value; ptr += 2)
7806 strcpy (ptr, argv[1]);
7811 /* if-exists built-in spec function.
7813 Checks to see if the file specified by the absolute pathname in
7814 ARGS exists. Returns that pathname if found.
7816 The usual use for this function is to check for a library file
7817 (whose name has been expanded with %s). */
7820 if_exists_spec_function (int argc, const char **argv)
7822 /* Must have only one argument. */
7823 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7829 /* if-exists-else built-in spec function.
7831 This is like if-exists, but takes an additional argument which
7832 is returned if the first argument does not exist. */
7835 if_exists_else_spec_function (int argc, const char **argv)
7837 /* Must have exactly two arguments. */
7841 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7847 /* replace-outfile built-in spec function.
7849 This looks for the first argument in the outfiles array's name and
7850 replaces it with the second argument. */
7853 replace_outfile_spec_function (int argc, const char **argv)
7856 /* Must have exactly two arguments. */
7860 for (i = 0; i < n_infiles; i++)
7862 if (outfiles[i] && !strcmp (outfiles[i], argv[0]))
7863 outfiles[i] = xstrdup (argv[1]);
7868 /* remove-outfile built-in spec function.
7870 * This looks for the first argument in the outfiles array's name and
7874 remove_outfile_spec_function (int argc, const char **argv)
7877 /* Must have exactly one argument. */
7881 for (i = 0; i < n_infiles; i++)
7883 if (outfiles[i] && !strcmp (outfiles[i], argv[0]))
7889 /* Given two version numbers, compares the two numbers.
7890 A version number must match the regular expression
7891 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
7894 compare_version_strings (const char *v1, const char *v2)
7899 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
7900 REG_EXTENDED | REG_NOSUB) != 0)
7902 rresult = regexec (&r, v1, 0, NULL, 0);
7903 if (rresult == REG_NOMATCH)
7904 fatal_error ("invalid version number %qs", v1);
7905 else if (rresult != 0)
7907 rresult = regexec (&r, v2, 0, NULL, 0);
7908 if (rresult == REG_NOMATCH)
7909 fatal_error ("invalid version number %qs", v2);
7910 else if (rresult != 0)
7913 return strverscmp (v1, v2);
7917 /* version_compare built-in spec function.
7919 This takes an argument of the following form:
7921 <comparison-op> <arg1> [<arg2>] <switch> <result>
7923 and produces "result" if the comparison evaluates to true,
7924 and nothing if it doesn't.
7926 The supported <comparison-op> values are:
7928 >= true if switch is a later (or same) version than arg1
7930 < true if switch is an earlier version than arg1
7932 >< true if switch is arg1 or later, and earlier than arg2
7933 <> true if switch is earlier than arg1 or is arg2 or later
7935 If the switch is not present, the condition is false unless
7936 the first character of the <comparison-op> is '!'.
7939 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
7940 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
7943 version_compare_spec_function (int argc, const char **argv)
7947 const char *switch_value = NULL;
7952 fatal_error ("too few arguments to %%:version-compare");
7953 if (argv[0][0] == '\0')
7955 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!')
7957 if (argc != nargs + 3)
7958 fatal_error ("too many arguments to %%:version-compare");
7960 switch_len = strlen (argv[nargs + 1]);
7961 for (i = 0; i < n_switches; i++)
7962 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len)
7963 && check_live_switch (i, switch_len))
7964 switch_value = switches[i].part1 + switch_len;
7966 if (switch_value == NULL)
7970 comp1 = compare_version_strings (switch_value, argv[1]);
7972 comp2 = compare_version_strings (switch_value, argv[2]);
7974 comp2 = -1; /* This value unused. */
7977 switch (argv[0][0] << 8 | argv[0][1])
7979 case '>' << 8 | '=':
7980 result = comp1 >= 0;
7982 case '!' << 8 | '<':
7983 result = comp1 >= 0 || switch_value == NULL;
7988 case '!' << 8 | '>':
7989 result = comp1 < 0 || switch_value == NULL;
7991 case '>' << 8 | '<':
7992 result = comp1 >= 0 && comp2 < 0;
7994 case '<' << 8 | '>':
7995 result = comp1 < 0 || comp2 >= 0;
7999 fatal_error ("unknown operator %qs in %%:version-compare", argv[0]);
8004 return argv[nargs + 2];
8007 /* %:include builtin spec function. This differs from %include in that it
8008 can be nested inside a spec, and thus be conditionalized. It takes
8009 one argument, the filename, and looks for it in the startfile path.
8010 The result is always NULL, i.e. an empty expansion. */
8013 include_spec_function (int argc, const char **argv)
8020 file = find_a_file (&startfile_prefixes, argv[0], R_OK, true);
8021 read_specs (file ? file : argv[0], FALSE);
8026 /* %:find-file spec function. This function replaces its argument by
8027 the file found thru find_file, that is the -print-file-name gcc
8030 find_file_spec_function (int argc, const char **argv)
8037 file = find_file (argv[0]);
8042 /* %:find-plugindir spec function. This function replaces its argument
8043 by the -iplugindir=<dir> option. `dir' is found thru find_file, that
8044 is the -print-file-name gcc program option. */
8046 find_plugindir_spec_function (int argc, const char **argv ATTRIBUTE_UNUSED)
8053 option = concat ("-iplugindir=", find_file ("plugin"), NULL);
8058 /* %:print-asm-header spec function. Print a banner to say that the
8059 following output is from the assembler. */
8062 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED,
8063 const char **argv ATTRIBUTE_UNUSED)
8065 printf (_("Assembler options\n=================\n\n"));
8066 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
8071 /* Compute a timestamp to initialize flag_random_seed. */
8074 get_local_tick (void)
8078 /* Get some more or less random data. */
8079 #ifdef HAVE_GETTIMEOFDAY
8083 gettimeofday (&tv, NULL);
8084 ret = tv.tv_sec * 1000 + tv.tv_usec / 1000;
8088 time_t now = time (NULL);
8090 if (now != (time_t)-1)
8091 ret = (unsigned) now;
8098 /* %:compare-debug-dump-opt spec function. Save the last argument,
8099 expected to be the last -fdump-final-insns option, or generate a
8103 compare_debug_dump_opt_spec_function (int arg,
8104 const char **argv ATTRIBUTE_UNUSED)
8109 static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3];
8112 fatal_error ("too many arguments to %%:compare-debug-dump-opt");
8114 do_spec_2 ("%{fdump-final-insns=*:%*}");
8115 do_spec_1 (" ", 0, NULL);
8117 if (VEC_length (const_char_p, argbuf) > 0
8118 && strcmp (argv[VEC_length (const_char_p, argbuf) - 1], "."))
8123 name = xstrdup (argv[VEC_length (const_char_p, argbuf) - 1]);
8128 const char *ext = NULL;
8130 if (VEC_length (const_char_p, argbuf) > 0)
8132 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
8135 else if (!compare_debug)
8138 do_spec_2 ("%g.gkd");
8140 do_spec_1 (" ", 0, NULL);
8142 gcc_assert (VEC_length (const_char_p, argbuf) > 0);
8144 name = concat (VEC_last (const_char_p, argbuf), ext, NULL);
8146 ret = concat ("-fdump-final-insns=", name, NULL);
8149 which = compare_debug < 0;
8150 debug_check_temp_file[which] = name;
8154 unsigned HOST_WIDE_INT value = get_local_tick () ^ getpid ();
8156 sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value);
8160 ret = concat ("%{!frandom-seed=*:-frandom-seed=", random_seed, "} ",
8169 static const char *debug_auxbase_opt;
8171 /* %:compare-debug-self-opt spec function. Expands to the options
8172 that are to be passed in the second compilation of
8176 compare_debug_self_opt_spec_function (int arg,
8177 const char **argv ATTRIBUTE_UNUSED)
8180 fatal_error ("too many arguments to %%:compare-debug-self-opt");
8182 if (compare_debug >= 0)
8185 do_spec_2 ("%{c|S:%{o*:%*}}");
8186 do_spec_1 (" ", 0, NULL);
8188 if (VEC_length (const_char_p, argbuf) > 0)
8189 debug_auxbase_opt = concat ("-auxbase-strip ",
8190 VEC_last (const_char_p, argbuf),
8193 debug_auxbase_opt = NULL;
8196 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
8197 %<fdump-final-insns=* -w -S -o %j \
8198 %{!fcompare-debug-second:-fcompare-debug-second} \
8199 ", compare_debug_opt, NULL);
8202 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
8203 options that are to be passed in the second compilation of
8204 compare-debug. It expects, as an argument, the basename of the
8205 current input file name, with the .gk suffix appended to it. */
8208 compare_debug_auxbase_opt_spec_function (int arg,
8215 fatal_error ("too few arguments to %%:compare-debug-auxbase-opt");
8218 fatal_error ("too many arguments to %%:compare-debug-auxbase-opt");
8220 if (compare_debug >= 0)
8223 len = strlen (argv[0]);
8224 if (len < 3 || strcmp (argv[0] + len - 3, ".gk") != 0)
8225 fatal_error ("argument to %%:compare-debug-auxbase-opt "
8226 "does not end in .gk");
8228 if (debug_auxbase_opt)
8229 return debug_auxbase_opt;
8231 #define OPT "-auxbase "
8234 name = (char*) xmalloc (sizeof (OPT) + len);
8235 memcpy (name, OPT, sizeof (OPT) - 1);
8236 memcpy (name + sizeof (OPT) - 1, argv[0], len);
8237 name[sizeof (OPT) - 1 + len] = '\0';
8244 /* %:pass-through-libs spec function. Finds all -l options and input
8245 file names in the lib spec passed to it, and makes a list of them
8246 prepended with the plugin option to cause them to be passed through
8247 to the final link after all the new object files have been added. */
8250 pass_through_libs_spec_func (int argc, const char **argv)
8252 char *prepended = xstrdup (" ");
8254 /* Shlemiel the painter's algorithm. Innately horrible, but at least
8255 we know that there will never be more than a handful of strings to
8256 concat, and it's only once per run, so it's not worth optimising. */
8257 for (n = 0; n < argc; n++)
8259 char *old = prepended;
8260 /* Anything that isn't an option is a full path to an output
8261 file; pass it through if it ends in '.a'. Among options,
8263 if (argv[n][0] == '-' && argv[n][1] == 'l')
8265 const char *lopt = argv[n] + 2;
8266 /* Handle both joined and non-joined -l options. If for any
8267 reason there's a trailing -l with no joined or following
8268 arg just discard it. */
8269 if (!*lopt && ++n >= argc)
8273 prepended = concat (prepended, "-plugin-opt=-pass-through=-l",
8276 else if (!strcmp (".a", argv[n] + strlen (argv[n]) - 2))
8278 prepended = concat (prepended, "-plugin-opt=-pass-through=",
8279 argv[n], " ", NULL);
8281 if (prepended != old)