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 #include "filenames.h"
50 /* By default there is no special suffix for target executables. */
51 /* FIXME: when autoconf is fixed, remove the host check - dj */
52 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
53 #define HAVE_TARGET_EXECUTABLE_SUFFIX
56 /* By default there is no special suffix for host executables. */
57 #ifdef HOST_EXECUTABLE_SUFFIX
58 #define HAVE_HOST_EXECUTABLE_SUFFIX
60 #define HOST_EXECUTABLE_SUFFIX ""
63 /* By default, the suffix for target object files is ".o". */
64 #ifdef TARGET_OBJECT_SUFFIX
65 #define HAVE_TARGET_OBJECT_SUFFIX
67 #define TARGET_OBJECT_SUFFIX ".o"
70 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
72 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
73 #ifndef LIBRARY_PATH_ENV
74 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
77 /* If a stage of compilation returns an exit status >= 1,
78 compilation of that file ceases. */
80 #define MIN_FATAL_STATUS 1
82 /* Flag set by cppspec.c to 1. */
85 /* Flag set to nonzero if an @file argument has been supplied to gcc. */
86 static bool at_file_supplied;
88 /* Definition of string containing the arguments given to configure. */
89 #include "configargs.h"
91 /* Flag saying to print the command line options understood by gcc and its
94 static int print_help_list;
96 /* Flag saying to print the version of gcc and its sub-processes. */
98 static int print_version;
100 /* Flag indicating whether we should ONLY print the command and
101 arguments (like verbose_flag) without executing the command.
102 Displayed arguments are quoted so that the generated command
103 line is suitable for execution. This is intended for use in
104 shell scripts to capture the driver-generated command line. */
105 static int verbose_only_flag;
107 /* Flag indicating how to print command line options of sub-processes. */
109 static int print_subprocess_help;
111 /* Whether we should report subprocess execution times to a file. */
113 FILE *report_times_to_file = NULL;
115 /* Nonzero means place this string before uses of /, so that include
116 and library files can be found in an alternate location. */
118 #ifdef TARGET_SYSTEM_ROOT
119 static const char *target_system_root = TARGET_SYSTEM_ROOT;
121 static const char *target_system_root = 0;
124 /* Nonzero means pass the updated target_system_root to the compiler. */
126 static int target_system_root_changed;
128 /* Nonzero means append this string to target_system_root. */
130 static const char *target_sysroot_suffix = 0;
132 /* Nonzero means append this string to target_system_root for headers. */
134 static const char *target_sysroot_hdrs_suffix = 0;
136 /* Nonzero means write "temp" files in source directory
137 and use the source file's name in them, and don't delete them. */
139 static enum save_temps {
140 SAVE_TEMPS_NONE, /* no -save-temps */
141 SAVE_TEMPS_CWD, /* -save-temps in current directory */
142 SAVE_TEMPS_OBJ /* -save-temps in object directory */
145 /* Output file to use to get the object directory for -save-temps=obj */
146 static char *save_temps_prefix = 0;
147 static size_t save_temps_length = 0;
149 /* The compiler version. */
151 static const char *compiler_version;
153 /* The target version. */
155 static const char *const spec_version = DEFAULT_TARGET_VERSION;
157 /* The target machine. */
159 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
161 /* Nonzero if cross-compiling.
162 When -b is used, the value comes from the `specs' file. */
164 #ifdef CROSS_DIRECTORY_STRUCTURE
165 static const char *cross_compile = "1";
167 static const char *cross_compile = "0";
170 /* Greatest exit code of sub-processes that has been encountered up to
172 static int greatest_status = 1;
174 /* This is the obstack which we use to allocate many strings. */
176 static struct obstack obstack;
178 /* This is the obstack to build an environment variable to pass to
179 collect2 that describes all of the relevant switches of what to
180 pass the compiler in building the list of pointers to constructors
183 static struct obstack collect_obstack;
185 /* Forward declaration for prototypes. */
189 static void init_spec (void);
190 static void store_arg (const char *, int, int);
191 static void insert_wrapper (const char *);
192 static char *load_specs (const char *);
193 static void read_specs (const char *, int);
194 static void set_spec (const char *, const char *);
195 static struct compiler *lookup_compiler (const char *, size_t, const char *);
196 static char *build_search_list (const struct path_prefix *, const char *,
198 static void xputenv (const char *);
199 static void putenv_from_prefixes (const struct path_prefix *, const char *,
201 static int access_check (const char *, int);
202 static char *find_a_file (const struct path_prefix *, const char *, int, bool);
203 static void add_prefix (struct path_prefix *, const char *, const char *,
205 static void add_sysrooted_prefix (struct path_prefix *, const char *,
206 const char *, int, int, int);
207 static char *skip_whitespace (char *);
208 static void delete_if_ordinary (const char *);
209 static void delete_temp_files (void);
210 static void delete_failure_queue (void);
211 static void clear_failure_queue (void);
212 static int check_live_switch (int, int);
213 static const char *handle_braces (const char *);
214 static inline bool input_suffix_matches (const char *, const char *);
215 static inline bool switch_matches (const char *, const char *, int);
216 static inline void mark_matching_switches (const char *, const char *, int);
217 static inline void process_marked_switches (void);
218 static const char *process_brace_body (const char *, const char *, const char *, int, int);
219 static const struct spec_function *lookup_spec_function (const char *);
220 static const char *eval_spec_function (const char *, const char *);
221 static const char *handle_spec_function (const char *);
222 static char *save_string (const char *, int);
223 static void set_collect_gcc_options (void);
224 static int do_spec_1 (const char *, int, const char *);
225 static int do_spec_2 (const char *);
226 static void do_option_spec (const char *, const char *);
227 static void do_self_spec (const char *);
228 static const char *find_file (const char *);
229 static int is_directory (const char *, bool);
230 static const char *validate_switches (const char *);
231 static void validate_all_switches (void);
232 static inline void validate_switches_from_spec (const char *);
233 static void give_switch (int, int);
234 static int used_arg (const char *, int);
235 static int default_arg (const char *, int);
236 static void set_multilib_dir (void);
237 static void print_multilib_info (void);
238 static void perror_with_name (const char *);
239 static void display_help (void);
240 static void add_preprocessor_option (const char *, int);
241 static void add_assembler_option (const char *, int);
242 static void add_linker_option (const char *, int);
243 static void process_command (unsigned int, struct cl_decoded_option *);
244 static int execute (void);
245 static void alloc_args (void);
246 static void clear_args (void);
247 static void fatal_signal (int);
248 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
249 static void init_gcc_specs (struct obstack *, const char *, const char *,
252 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
253 static const char *convert_filename (const char *, int, int);
256 static const char *getenv_spec_function (int, const char **);
257 static const char *if_exists_spec_function (int, const char **);
258 static const char *if_exists_else_spec_function (int, const char **);
259 static const char *replace_outfile_spec_function (int, const char **);
260 static const char *remove_outfile_spec_function (int, const char **);
261 static const char *version_compare_spec_function (int, const char **);
262 static const char *include_spec_function (int, const char **);
263 static const char *find_file_spec_function (int, const char **);
264 static const char *find_plugindir_spec_function (int, const char **);
265 static const char *print_asm_header_spec_function (int, const char **);
266 static const char *compare_debug_dump_opt_spec_function (int, const char **);
267 static const char *compare_debug_self_opt_spec_function (int, const char **);
268 static const char *compare_debug_auxbase_opt_spec_function (int, const char **);
269 static const char *pass_through_libs_spec_func (int, const char **);
271 /* The Specs Language
273 Specs are strings containing lines, each of which (if not blank)
274 is made up of a program name, and arguments separated by spaces.
275 The program name must be exact and start from root, since no path
276 is searched and it is unreliable to depend on the current working directory.
277 Redirection of input or output is not supported; the subprograms must
278 accept filenames saying what files to read and write.
280 In addition, the specs can contain %-sequences to substitute variable text
281 or for conditional text. Here is a table of all defined %-sequences.
282 Note that spaces are not generated automatically around the results of
283 expanding these sequences; therefore, you can concatenate them together
284 or with constant text in a single argument.
286 %% substitute one % into the program name or argument.
287 %i substitute the name of the input file being processed.
288 %b substitute the basename of the input file being processed.
289 This is the substring up to (and not including) the last period
290 and not including the directory unless -save-temps was specified
291 to put temporaries in a different location.
292 %B same as %b, but include the file suffix (text after the last period).
294 substitute a file name that has suffix SUFFIX and is chosen
295 once per compilation, and mark the argument a la %d. To reduce
296 exposure to denial-of-service attacks, the file name is now
297 chosen in a way that is hard to predict even when previously
298 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
299 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
300 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
301 had been pre-processed. Previously, %g was simply substituted
302 with a file name chosen once per compilation, without regard
303 to any appended suffix (which was therefore treated just like
304 ordinary text), making such attacks more likely to succeed.
306 like %g, but if -pipe is in effect, expands simply to "-".
308 like %g, but if -pipe is in effect, expands to nothing. (We have both
309 %| and %m to accommodate differences between system assemblers; see
310 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
312 like %g, but generates a new temporary file name even if %uSUFFIX
315 substitutes the last file name generated with %uSUFFIX, generating a
316 new one if there is no such last file name. In the absence of any
317 %uSUFFIX, this is just like %gSUFFIX, except they don't share
318 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
319 would involve the generation of two distinct file names, one
320 for each `%g.s' and another for each `%U.s'. Previously, %U was
321 simply substituted with a file name chosen for the previous %u,
322 without regard to any appended suffix.
324 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
325 writable, and if save-temps is off; otherwise, substitute the name
326 of a temporary file, just like %u. This temporary file is not
327 meant for communication between processes, but rather as a junk
330 substitutes .SUFFIX for the suffixes of a matched switch's args when
331 it is subsequently output with %*. SUFFIX is terminated by the next
333 %d marks the argument containing or following the %d as a
334 temporary file name, so that that file will be deleted if GCC exits
335 successfully. Unlike %g, this contributes no text to the argument.
336 %w marks the argument containing or following the %w as the
337 "output file" of this compilation. This puts the argument
338 into the sequence of arguments that %o will substitute later.
339 %V indicates that this compilation produces no "output file".
341 like %{...} but mark last argument supplied within
342 as a file to be deleted on failure.
343 %o substitutes the names of all the output files, with spaces
344 automatically placed around them. You should write spaces
345 around the %o as well or the results are undefined.
346 %o is for use in the specs for running the linker.
347 Input files whose names have no recognized suffix are not compiled
348 at all, but they are included among the output files, so they will
350 %O substitutes the suffix for object files. Note that this is
351 handled specially when it immediately follows %g, %u, or %U
352 (with or without a suffix argument) because of the need for
353 those to form complete file names. The handling is such that
354 %O is treated exactly as if it had already been substituted,
355 except that %g, %u, and %U do not currently support additional
356 SUFFIX characters following %O as they would following, for
358 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
359 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
360 and -B options) and -imultilib as necessary.
361 %s current argument is the name of a library or startup file of some sort.
362 Search for that file in a standard list of directories
363 and substitute the full name found.
364 %eSTR Print STR as an error message. STR is terminated by a newline.
365 Use this when inconsistent options are detected.
366 %nSTR Print STR as a notice. STR is terminated by a newline.
367 %x{OPTION} Accumulate an option for %X.
368 %X Output the accumulated linker options specified by compilations.
369 %Y Output the accumulated assembler options specified by compilations.
370 %Z Output the accumulated preprocessor options specified by compilations.
371 %a process ASM_SPEC as a spec.
372 This allows config.h to specify part of the spec for running as.
373 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
374 used here. This can be used to run a post-processor after the
375 assembler has done its job.
376 %D Dump out a -L option for each directory in startfile_prefixes.
377 If multilib_dir is set, extra entries are generated with it affixed.
378 %l process LINK_SPEC as a spec.
379 %L process LIB_SPEC as a spec.
380 %G process LIBGCC_SPEC as a spec.
381 %R Output the concatenation of target_system_root and
382 target_sysroot_suffix.
383 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
384 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
385 %C process CPP_SPEC as a spec.
386 %1 process CC1_SPEC as a spec.
387 %2 process CC1PLUS_SPEC as a spec.
388 %* substitute the variable part of a matched option. (See below.)
389 Note that each comma in the substituted string is replaced by
391 %<S remove all occurrences of -S from the command line.
392 Note - this command is position dependent. % commands in the
393 spec string before this one will see -S, % commands in the
394 spec string after this one will not.
395 %>S Similar to "%<S", but keep it in the GCC command line.
396 %<S* remove all occurrences of all switches beginning with -S from the
399 Call the named function FUNCTION, passing it ARGS. ARGS is
400 first processed as a nested spec string, then split into an
401 argument vector in the usual fashion. The function returns
402 a string which is processed as if it had appeared literally
403 as part of the current spec.
404 %{S} substitutes the -S switch, if that switch was given to GCC.
405 If that switch was not specified, this substitutes nothing.
406 Here S is a metasyntactic variable.
407 %{S*} substitutes all the switches specified to GCC whose names start
408 with -S. This is used for -o, -I, etc; switches that take
409 arguments. GCC considers `-o foo' as being one switch whose
410 name starts with `o'. %{o*} would substitute this text,
411 including the space; thus, two arguments would be generated.
412 %{S*&T*} likewise, but preserve order of S and T options (the order
413 of S and T in the spec is not significant). Can be any number
414 of ampersand-separated variables; for each the wild card is
415 optional. Useful for CPP as %{D*&U*&A*}.
417 %{S:X} substitutes X, if the -S switch was given to GCC.
418 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
419 %{S*:X} substitutes X if one or more switches whose names start
420 with -S was given to GCC. Normally X is substituted only
421 once, no matter how many such switches appeared. However,
422 if %* appears somewhere in X, then X will be substituted
423 once for each matching switch, with the %* replaced by the
424 part of that switch that matched the '*'.
425 %{.S:X} substitutes X, if processing a file with suffix S.
426 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
427 %{,S:X} substitutes X, if processing a file which will use spec S.
428 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
430 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
431 combined with '!', '.', ',', and '*' as above binding stronger
433 If %* appears in X, all of the alternatives must be starred, and
434 only the first matching alternative is substituted.
435 %{S:X; if S was given to GCC, substitutes X;
436 T:Y; else if T was given to GCC, substitutes Y;
437 :D} else substitutes D. There can be as many clauses as you need.
438 This may be combined with '.', '!', ',', '|', and '*' as above.
440 %(Spec) processes a specification defined in a specs file as *Spec:
442 The conditional text X in a %{S:X} or similar construct may contain
443 other nested % constructs or spaces, or even newlines. They are
444 processed as usual, as described above. Trailing white space in X is
445 ignored. White space may also appear anywhere on the left side of the
446 colon in these constructs, except between . or * and the corresponding
449 The -O, -f, -m, and -W switches are handled specifically in these
450 constructs. If another value of -O or the negated form of a -f, -m, or
451 -W switch is found later in the command line, the earlier switch
452 value is ignored, except with {S*} where S is just one letter; this
453 passes all matching options.
455 The character | at the beginning of the predicate text is used to indicate
456 that a command should be piped to the following command, but only if -pipe
459 Note that it is built into GCC which switches take arguments and which
460 do not. You might think it would be useful to generalize this to
461 allow each compiler's spec to say which switches take arguments. But
462 this cannot be done in a consistent fashion. GCC cannot even decide
463 which input files have been specified without knowing which switches
464 take arguments, and it must know which input files to compile in order
465 to tell which compilers to run.
467 GCC also knows implicitly that arguments starting in `-l' are to be
468 treated as compiler output files, and passed to the linker in their
469 proper position among the other output files. */
471 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
473 /* config.h can define ASM_SPEC to provide extra args to the assembler
474 or extra switch-translations. */
479 /* config.h can define ASM_FINAL_SPEC to run a post processor after
480 the assembler has run. */
481 #ifndef ASM_FINAL_SPEC
482 #define ASM_FINAL_SPEC ""
485 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
486 or extra switch-translations. */
491 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
492 or extra switch-translations. */
497 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
498 or extra switch-translations. */
500 #define CC1PLUS_SPEC ""
503 /* config.h can define LINK_SPEC to provide extra args to the linker
504 or extra switch-translations. */
509 /* config.h can define LIB_SPEC to override the default libraries. */
511 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
516 /* XXX: valid only for GNU ld */
517 /* XXX: should exactly match hooks provided by libmudflap.a */
518 #define MFWRAP_SPEC " %{static: %{fmudflap|fmudflapth: \
519 --wrap=malloc --wrap=free --wrap=calloc --wrap=realloc\
520 --wrap=mmap --wrap=mmap64 --wrap=munmap --wrap=alloca\
521 } %{fmudflapth: --wrap=pthread_create\
522 }} %{fmudflap|fmudflapth: --wrap=main}"
525 #define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}"
528 /* When using -fsplit-stack we need to wrap pthread_create, in order
529 to initialize the stack guard. We always use wrapping, rather than
530 shared library ordering, and we keep the wrapper function in
531 libgcc. This is not yet a real spec, though it could become one;
532 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping
533 only works with GNU ld and gold. FIXME: This is incompatible with
534 -fmudflap when linking statically, which wants to do its own
536 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}"
538 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
541 #if defined(REAL_LIBGCC_SPEC)
542 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
543 #elif defined(LINK_LIBGCC_SPECIAL_1)
544 /* Have gcc do the search for libgcc.a. */
545 #define LIBGCC_SPEC "libgcc.a%s"
547 #define LIBGCC_SPEC "-lgcc"
551 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
552 #ifndef STARTFILE_SPEC
553 #define STARTFILE_SPEC \
554 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
557 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
559 #define ENDFILE_SPEC ""
563 #define LINKER_NAME "collect2"
566 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
567 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
572 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
574 #ifndef ASM_DEBUG_SPEC
575 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
576 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
577 # define ASM_DEBUG_SPEC \
578 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
579 ? "%{!g0:%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}}" ASM_MAP \
580 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
582 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
583 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
585 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
586 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
590 #ifndef ASM_DEBUG_SPEC
591 # define ASM_DEBUG_SPEC ""
594 /* Here is the spec for running the linker, after compiling all files. */
596 /* This is overridable by the target in case they need to specify the
597 -lgcc and -lc order specially, yet not require them to override all
598 of LINK_COMMAND_SPEC. */
599 #ifndef LINK_GCC_C_SEQUENCE_SPEC
600 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
603 #ifndef LINK_SSP_SPEC
604 #ifdef TARGET_LIBC_PROVIDES_SSP
605 #define LINK_SSP_SPEC "%{fstack-protector:}"
607 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}"
611 #ifndef LINK_PIE_SPEC
613 #define LINK_PIE_SPEC "%{pie:-pie} "
615 #define LINK_PIE_SPEC "%{pie:} "
619 #ifndef LINK_BUILDID_SPEC
620 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
621 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
625 /* Conditional to test whether the LTO plugin is used or not.
626 FIXME: For slim LTO we will need to enable plugin unconditionally. This
627 still cause problems with PLUGIN_LD != LD and when plugin is built but
628 not useable. For GCC 4.6 we don't support slim LTO and thus we can enable
629 plugin only when LTO is enabled. We still honor explicit
630 -fuse-linker-plugin if the linker used understands -plugin. */
632 /* The linker has some plugin support. */
633 #if HAVE_LTO_PLUGIN > 0
634 /* The linker used has full plugin support, use LTO plugin by default. */
635 #if HAVE_LTO_PLUGIN == 2
636 #define PLUGIN_COND "!fno-use-linker-plugin:%{flto|flto=*|fuse-linker-plugin"
637 #define PLUGIN_COND_CLOSE "}"
639 /* The linker used has limited plugin support, use LTO plugin with explicit
640 -fuse-linker-plugin. */
641 #define PLUGIN_COND "fuse-linker-plugin"
642 #define PLUGIN_COND_CLOSE ""
644 #define LINK_PLUGIN_SPEC \
646 -plugin %(linker_plugin_file) \
647 -plugin-opt=%(lto_wrapper) \
648 -plugin-opt=-fresolution=%u.res \
649 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
652 /* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */
653 #define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\
654 %e-fuse-linker-plugin is not supported in this configuration}"
658 /* -u* was put back because both BSD and SysV seem to support it. */
659 /* %{static:} simply prevents an error message if the target machine
660 doesn't handle -static. */
661 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
662 scripts which exist in user specified directories, or in standard
664 /* We pass any -flto flags on to the linker, which is expected
665 to understand them. In practice, this means it had better be collect2. */
666 /* %{e*} includes -export-dynamic; see comment in common.opt. */
667 #ifndef LINK_COMMAND_SPEC
668 #define LINK_COMMAND_SPEC "\
669 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
672 "%{flto|flto=*:%<fcompare-debug*} \
673 %{flto} %{flto=*} %l " LINK_PIE_SPEC \
674 "%X %{o*} %{e*} %{N} %{n} %{r}\
675 %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}}\
676 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
677 %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
678 %(mflib) " STACK_SPLIT_SPEC "\
679 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov}\
680 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
681 %{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}"
684 #ifndef LINK_LIBGCC_SPEC
685 /* Generate -L options for startfile prefix list. */
686 # define LINK_LIBGCC_SPEC "%D"
689 #ifndef STARTFILE_PREFIX_SPEC
690 # define STARTFILE_PREFIX_SPEC ""
694 # define SYSROOT_SPEC "--sysroot=%R"
697 #ifndef SYSROOT_SUFFIX_SPEC
698 # define SYSROOT_SUFFIX_SPEC ""
701 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
702 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
705 static const char *asm_debug;
706 static const char *cpp_spec = CPP_SPEC;
707 static const char *cc1_spec = CC1_SPEC;
708 static const char *cc1plus_spec = CC1PLUS_SPEC;
709 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
710 static const char *link_ssp_spec = LINK_SSP_SPEC;
711 static const char *asm_spec = ASM_SPEC;
712 static const char *asm_final_spec = ASM_FINAL_SPEC;
713 static const char *link_spec = LINK_SPEC;
714 static const char *lib_spec = LIB_SPEC;
715 static const char *mfwrap_spec = MFWRAP_SPEC;
716 static const char *mflib_spec = MFLIB_SPEC;
717 static const char *link_gomp_spec = "";
718 static const char *libgcc_spec = LIBGCC_SPEC;
719 static const char *endfile_spec = ENDFILE_SPEC;
720 static const char *startfile_spec = STARTFILE_SPEC;
721 static const char *linker_name_spec = LINKER_NAME;
722 static const char *linker_plugin_file_spec = "";
723 static const char *lto_wrapper_spec = "";
724 static const char *lto_gcc_spec = "";
725 static const char *link_command_spec = LINK_COMMAND_SPEC;
726 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
727 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
728 static const char *sysroot_spec = SYSROOT_SPEC;
729 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
730 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
731 static const char *self_spec = "";
733 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
734 There should be no need to override these in target dependent files,
735 but we need to copy them to the specs file so that newer versions
736 of the GCC driver can correctly drive older tool chains with the
737 appropriate -B options. */
739 /* When cpplib handles traditional preprocessing, get rid of this, and
740 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
741 that we default the front end language better. */
742 static const char *trad_capable_cpp =
743 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}";
745 /* We don't wrap .d files in %W{} since a missing .d file, and
746 therefore no dependency entry, confuses make into thinking a .o
747 file that happens to exist is up-to-date. */
748 static const char *cpp_unique_options =
749 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
750 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
751 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
752 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
753 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
754 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
755 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
756 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
757 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
758 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
761 /* This contains cpp options which are common with cc1_options and are passed
762 only when preprocessing only to avoid duplication. We pass the cc1 spec
763 options to the preprocessor so that it the cc1 spec may manipulate
764 options used to set target flags. Those special target flags settings may
765 in turn cause preprocessor symbols to be defined specially. */
766 static const char *cpp_options =
767 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
768 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
769 %{undef} %{save-temps*:-fpch-preprocess}";
771 /* This contains cpp options which are not passed when the preprocessor
772 output will be used by another program. */
773 static const char *cpp_debug_options = "%{d*}";
775 /* NB: This is shared amongst all front-ends, except for Ada. */
776 static const char *cc1_options =
777 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
778 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
779 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
780 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
781 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
782 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
783 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
784 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\
785 %{-target-help:--target-help}\
786 %{-version:--version}\
787 %{-help=*:--help=%*}\
788 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
789 %{fsyntax-only:-o %j} %{-param*}\
790 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\
791 %{coverage:-fprofile-arcs -ftest-coverage}";
793 static const char *asm_options =
794 "%{-target-help:%:print-asm-header()} "
796 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
797 to the assembler equivalents. */
798 "%{v} %{w:-W} %{I*} "
800 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
802 static const char *invoke_as =
803 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
805 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
806 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
810 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
811 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
815 /* Some compilers have limits on line lengths, and the multilib_select
816 and/or multilib_matches strings can be very long, so we build them at
818 static struct obstack multilib_obstack;
819 static const char *multilib_select;
820 static const char *multilib_matches;
821 static const char *multilib_defaults;
822 static const char *multilib_exclusions;
824 /* Check whether a particular argument is a default argument. */
826 #ifndef MULTILIB_DEFAULTS
827 #define MULTILIB_DEFAULTS { "" }
830 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
832 #ifndef DRIVER_SELF_SPECS
833 #define DRIVER_SELF_SPECS ""
836 /* Adding -fopenmp should imply pthreads. This is particularly important
837 for targets that use different start files and suchlike. */
838 #ifndef GOMP_SELF_SPECS
839 #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}"
842 static const char *const driver_self_specs[] = {
843 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
844 DRIVER_SELF_SPECS, CONFIGURE_SPECS, GOMP_SELF_SPECS
847 #ifndef OPTION_DEFAULT_SPECS
848 #define OPTION_DEFAULT_SPECS { "", "" }
857 static const struct default_spec
858 option_default_specs[] = { OPTION_DEFAULT_SPECS };
862 struct user_specs *next;
863 const char *filename;
866 static struct user_specs *user_specs_head, *user_specs_tail;
869 /* Record the mapping from file suffixes for compilation specs. */
873 const char *suffix; /* Use this compiler for input files
874 whose names end in this suffix. */
876 const char *spec; /* To use this compiler, run this spec. */
878 const char *cpp_spec; /* If non-NULL, substitute this spec
879 for `%C', rather than the usual
881 const int combinable; /* If nonzero, compiler can deal with
882 multiple source files at once (IMA). */
883 const int needs_preprocessing; /* If nonzero, source files need to
884 be run through a preprocessor. */
887 /* Pointer to a vector of `struct compiler' that gives the spec for
888 compiling a file, based on its suffix.
889 A file that does not end in any of these suffixes will be passed
890 unchanged to the loader and nothing else will be done to it.
892 An entry containing two 0s is used to terminate the vector.
894 If multiple entries match a file, the last matching one is used. */
896 static struct compiler *compilers;
898 /* Number of entries in `compilers', not counting the null terminator. */
900 static int n_compilers;
902 /* The default list of file name suffixes and their compilation specs. */
904 static const struct compiler default_compilers[] =
906 /* Add lists of suffixes of known languages here. If those languages
907 were not present when we built the driver, we will hit these copies
908 and be given a more meaningful error than "file not used since
909 linking is not done". */
910 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
911 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
912 {".mii", "#Objective-C++", 0, 0, 0},
913 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
914 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
915 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
916 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
917 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
918 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
919 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
920 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
921 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
922 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
923 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
924 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
925 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
926 {".r", "#Ratfor", 0, 0, 0},
927 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
928 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
929 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
930 {".go", "#Go", 0, 1, 0},
931 /* Next come the entries for C. */
932 {".c", "@c", 0, 0, 1},
934 /* cc1 has an integrated ISO C preprocessor. We should invoke the
935 external preprocessor if -save-temps is given. */
936 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
939 %eGNU C no longer supports -traditional without -E}\
940 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
941 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
942 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
944 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
945 cc1 %(cpp_unique_options) %(cc1_options)}}}\
946 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
948 "%{!E:%e-E or -x required when input is from standard input}\
949 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
950 {".h", "@c-header", 0, 0, 0},
952 /* cc1 has an integrated ISO C preprocessor. We should invoke the
953 external preprocessor if -save-temps is given. */
954 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
956 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
957 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
958 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
960 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
961 %W{o*:--output-pch=%*}}%V}\
962 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
963 cc1 %(cpp_unique_options) %(cc1_options)\
964 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
965 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
966 {".i", "@cpp-output", 0, 0, 0},
968 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
969 {".s", "@assembler", 0, 0, 0},
971 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
972 {".sx", "@assembler-with-cpp", 0, 0, 0},
973 {".S", "@assembler-with-cpp", 0, 0, 0},
974 {"@assembler-with-cpp",
975 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
976 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
977 %{E|M|MM:%(cpp_debug_options)}\
978 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
979 as %(asm_debug) %(asm_options) %|.s %A }}}}"
981 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
982 %{E|M|MM:%(cpp_debug_options)}\
983 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
984 as %(asm_debug) %(asm_options) %m.s %A }}}}"
989 /* Mark end of table. */
993 /* Number of elements in default_compilers, not counting the terminator. */
995 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
997 typedef char *char_p; /* For DEF_VEC_P. */
999 DEF_VEC_ALLOC_P(char_p,heap);
1001 /* A vector of options to give to the linker.
1002 These options are accumulated by %x,
1003 and substituted into the linker command with %X. */
1004 static VEC(char_p,heap) *linker_options;
1006 /* A vector of options to give to the assembler.
1007 These options are accumulated by -Wa,
1008 and substituted into the assembler command with %Y. */
1009 static VEC(char_p,heap) *assembler_options;
1011 /* A vector of options to give to the preprocessor.
1012 These options are accumulated by -Wp,
1013 and substituted into the preprocessor command with %Z. */
1014 static VEC(char_p,heap) *preprocessor_options;
1017 skip_whitespace (char *p)
1021 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1022 be considered whitespace. */
1023 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1025 else if (*p == '\n' || *p == ' ' || *p == '\t')
1039 /* Structures to keep track of prefixes to try when looking for files. */
1043 const char *prefix; /* String to prepend to the path. */
1044 struct prefix_list *next; /* Next in linked list. */
1045 int require_machine_suffix; /* Don't use without machine_suffix. */
1046 /* 2 means try both machine_suffix and just_machine_suffix. */
1047 int priority; /* Sort key - priority within list. */
1048 int os_multilib; /* 1 if OS multilib scheme should be used,
1049 0 for GCC multilib scheme. */
1054 struct prefix_list *plist; /* List of prefixes to try */
1055 int max_len; /* Max length of a prefix in PLIST */
1056 const char *name; /* Name of this list (used in config stuff) */
1059 /* List of prefixes to try when looking for executables. */
1061 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1063 /* List of prefixes to try when looking for startup (crt0) files. */
1065 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1067 /* List of prefixes to try when looking for include files. */
1069 static struct path_prefix include_prefixes = { 0, 0, "include" };
1071 /* Suffix to attach to directories searched for commands.
1072 This looks like `MACHINE/VERSION/'. */
1074 static const char *machine_suffix = 0;
1076 /* Suffix to attach to directories searched for commands.
1077 This is just `MACHINE/'. */
1079 static const char *just_machine_suffix = 0;
1081 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1083 static const char *gcc_exec_prefix;
1085 /* Adjusted value of standard_libexec_prefix. */
1087 static const char *gcc_libexec_prefix;
1089 /* Default prefixes to attach to command names. */
1091 #ifndef STANDARD_STARTFILE_PREFIX_1
1092 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1094 #ifndef STANDARD_STARTFILE_PREFIX_2
1095 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1098 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1099 #undef MD_EXEC_PREFIX
1100 #undef MD_STARTFILE_PREFIX
1101 #undef MD_STARTFILE_PREFIX_1
1104 /* If no prefixes defined, use the null string, which will disable them. */
1105 #ifndef MD_EXEC_PREFIX
1106 #define MD_EXEC_PREFIX ""
1108 #ifndef MD_STARTFILE_PREFIX
1109 #define MD_STARTFILE_PREFIX ""
1111 #ifndef MD_STARTFILE_PREFIX_1
1112 #define MD_STARTFILE_PREFIX_1 ""
1115 /* These directories are locations set at configure-time based on the
1116 --prefix option provided to configure. Their initializers are
1117 defined in Makefile.in. These paths are not *directly* used when
1118 gcc_exec_prefix is set because, in that case, we know where the
1119 compiler has been installed, and use paths relative to that
1120 location instead. */
1121 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1122 static const char *const standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1123 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1124 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1126 /* For native compilers, these are well-known paths containing
1127 components that may be provided by the system. For cross
1128 compilers, these paths are not used. */
1129 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1130 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1131 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1132 static const char *const standard_startfile_prefix_1
1133 = STANDARD_STARTFILE_PREFIX_1;
1134 static const char *const standard_startfile_prefix_2
1135 = STANDARD_STARTFILE_PREFIX_2;
1137 /* A relative path to be used in finding the location of tools
1138 relative to the driver. */
1139 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1141 /* Subdirectory to use for locating libraries. Set by
1142 set_multilib_dir based on the compilation options. */
1144 static const char *multilib_dir;
1146 /* Subdirectory to use for locating libraries in OS conventions. Set by
1147 set_multilib_dir based on the compilation options. */
1149 static const char *multilib_os_dir;
1151 /* Structure to keep track of the specs that have been defined so far.
1152 These are accessed using %(specname) in a compiler or link
1157 /* The following 2 fields must be first */
1158 /* to allow EXTRA_SPECS to be initialized */
1159 const char *name; /* name of the spec. */
1160 const char *ptr; /* available ptr if no static pointer */
1162 /* The following fields are not initialized */
1163 /* by EXTRA_SPECS */
1164 const char **ptr_spec; /* pointer to the spec itself. */
1165 struct spec_list *next; /* Next spec in linked list. */
1166 int name_len; /* length of the name */
1167 int alloc_p; /* whether string was allocated */
1170 #define INIT_STATIC_SPEC(NAME,PTR) \
1171 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1173 /* List of statically defined specs. */
1174 static struct spec_list static_specs[] =
1176 INIT_STATIC_SPEC ("asm", &asm_spec),
1177 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1178 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1179 INIT_STATIC_SPEC ("asm_options", &asm_options),
1180 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1181 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1182 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1183 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1184 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1185 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1186 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1187 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1188 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1189 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1190 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec),
1191 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1192 INIT_STATIC_SPEC ("link", &link_spec),
1193 INIT_STATIC_SPEC ("lib", &lib_spec),
1194 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec),
1195 INIT_STATIC_SPEC ("mflib", &mflib_spec),
1196 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec),
1197 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1198 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1199 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1200 INIT_STATIC_SPEC ("version", &compiler_version),
1201 INIT_STATIC_SPEC ("multilib", &multilib_select),
1202 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1203 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1204 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1205 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1206 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1207 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1208 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec),
1209 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec),
1210 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec),
1211 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1212 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1213 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1214 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1215 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1216 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec),
1217 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1218 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1219 INIT_STATIC_SPEC ("self_spec", &self_spec),
1222 #ifdef EXTRA_SPECS /* additional specs needed */
1223 /* Structure to keep track of just the first two args of a spec_list.
1224 That is all that the EXTRA_SPECS macro gives us. */
1227 const char *const name;
1228 const char *const ptr;
1231 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1232 static struct spec_list *extra_specs = (struct spec_list *) 0;
1235 /* List of dynamically allocates specs that have been defined so far. */
1237 static struct spec_list *specs = (struct spec_list *) 0;
1239 /* List of static spec functions. */
1241 static const struct spec_function static_spec_functions[] =
1243 { "getenv", getenv_spec_function },
1244 { "if-exists", if_exists_spec_function },
1245 { "if-exists-else", if_exists_else_spec_function },
1246 { "replace-outfile", replace_outfile_spec_function },
1247 { "remove-outfile", remove_outfile_spec_function },
1248 { "version-compare", version_compare_spec_function },
1249 { "include", include_spec_function },
1250 { "find-file", find_file_spec_function },
1251 { "find-plugindir", find_plugindir_spec_function },
1252 { "print-asm-header", print_asm_header_spec_function },
1253 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function },
1254 { "compare-debug-self-opt", compare_debug_self_opt_spec_function },
1255 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function },
1256 { "pass-through-libs", pass_through_libs_spec_func },
1257 #ifdef EXTRA_SPEC_FUNCTIONS
1258 EXTRA_SPEC_FUNCTIONS
1263 static int processing_spec_function;
1265 /* Add appropriate libgcc specs to OBSTACK, taking into account
1266 various permutations of -shared-libgcc, -shared, and such. */
1268 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1270 #ifndef USE_LD_AS_NEEDED
1271 #define USE_LD_AS_NEEDED 0
1275 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1276 const char *static_name, const char *eh_name)
1280 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}"
1281 "%{!static:%{!static-libgcc:"
1282 #if USE_LD_AS_NEEDED
1283 "%{!shared-libgcc:",
1284 static_name, " --as-needed ", shared_name, " --no-as-needed"
1287 shared_name, "%{!shared: ", static_name, "}"
1291 "%{!shared-libgcc:", static_name, " ", eh_name, "}"
1292 "%{shared-libgcc:", shared_name, " ", static_name, "}"
1296 "%{shared-libgcc:", shared_name, "}"
1297 "%{!shared-libgcc:", static_name, "}"
1300 "%{shared:", shared_name, "}"
1305 obstack_grow (obstack, buf, strlen (buf));
1308 #endif /* ENABLE_SHARED_LIBGCC */
1310 /* Initialize the specs lookup routines. */
1315 struct spec_list *next = (struct spec_list *) 0;
1316 struct spec_list *sl = (struct spec_list *) 0;
1320 return; /* Already initialized. */
1323 fnotice (stderr, "Using built-in specs.\n");
1326 extra_specs = XCNEWVEC (struct spec_list, ARRAY_SIZE (extra_specs_1));
1328 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1330 sl = &extra_specs[i];
1331 sl->name = extra_specs_1[i].name;
1332 sl->ptr = extra_specs_1[i].ptr;
1334 sl->name_len = strlen (sl->name);
1335 sl->ptr_spec = &sl->ptr;
1340 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1342 sl = &static_specs[i];
1347 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1348 /* ??? If neither -shared-libgcc nor --static-libgcc was
1349 seen, then we should be making an educated guess. Some proposed
1350 heuristics for ELF include:
1352 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1353 program will be doing dynamic loading, which will likely
1354 need the shared libgcc.
1356 (2) If "-ldl", then it's also a fair bet that we're doing
1359 (3) For each ET_DYN we're linking against (either through -lfoo
1360 or /some/path/foo.so), check to see whether it or one of
1361 its dependencies depends on a shared libgcc.
1365 If the runtime is fixed to look for program headers instead
1366 of calling __register_frame_info at all, for each object,
1367 use the shared libgcc if any EH symbol referenced.
1369 If crtstuff is fixed to not invoke __register_frame_info
1370 automatically, for each object, use the shared libgcc if
1371 any non-empty unwind section found.
1373 Doing any of this probably requires invoking an external program to
1374 do the actual object file scanning. */
1376 const char *p = libgcc_spec;
1379 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1380 when given the proper command line arguments. */
1383 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1385 init_gcc_specs (&obstack,
1387 #ifdef USE_LIBUNWIND_EXCEPTIONS
1393 #ifdef USE_LIBUNWIND_EXCEPTIONS
1394 # ifdef HAVE_LD_STATIC_DYNAMIC
1395 " %{!static:" LD_STATIC_OPTION "} -lunwind"
1396 " %{!static:" LD_DYNAMIC_OPTION "}"
1406 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1408 /* Ug. We don't know shared library extensions. Hope that
1409 systems that use this form don't do shared libraries. */
1410 init_gcc_specs (&obstack,
1414 #ifdef USE_LIBUNWIND_EXCEPTIONS
1423 obstack_1grow (&obstack, *p);
1424 in_sep = (*p == ' ');
1429 obstack_1grow (&obstack, '\0');
1430 libgcc_spec = XOBFINISH (&obstack, const char *);
1433 #ifdef USE_AS_TRADITIONAL_FORMAT
1434 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1436 static const char tf[] = "--traditional-format ";
1437 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1438 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1439 asm_spec = XOBFINISH (&obstack, const char *);
1443 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \
1444 defined LINKER_HASH_STYLE
1445 # ifdef LINK_BUILDID_SPEC
1446 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1447 obstack_grow (&obstack, LINK_BUILDID_SPEC, sizeof(LINK_BUILDID_SPEC) - 1);
1449 # ifdef LINK_EH_SPEC
1450 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1451 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1453 # ifdef LINKER_HASH_STYLE
1454 /* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had
1457 static const char hash_style[] = "--hash-style=";
1458 obstack_grow (&obstack, hash_style, sizeof(hash_style) - 1);
1459 obstack_grow (&obstack, LINKER_HASH_STYLE, sizeof(LINKER_HASH_STYLE) - 1);
1460 obstack_1grow (&obstack, ' ');
1463 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1464 link_spec = XOBFINISH (&obstack, const char *);
1470 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1471 removed; If the spec starts with a + then SPEC is added to the end of the
1475 set_spec (const char *name, const char *spec)
1477 struct spec_list *sl;
1478 const char *old_spec;
1479 int name_len = strlen (name);
1482 /* If this is the first call, initialize the statically allocated specs. */
1485 struct spec_list *next = (struct spec_list *) 0;
1486 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1488 sl = &static_specs[i];
1495 /* See if the spec already exists. */
1496 for (sl = specs; sl; sl = sl->next)
1497 if (name_len == sl->name_len && !strcmp (sl->name, name))
1502 /* Not found - make it. */
1503 sl = XNEW (struct spec_list);
1504 sl->name = xstrdup (name);
1505 sl->name_len = name_len;
1506 sl->ptr_spec = &sl->ptr;
1508 *(sl->ptr_spec) = "";
1513 old_spec = *(sl->ptr_spec);
1514 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1515 ? concat (old_spec, spec + 1, NULL)
1520 fnotice (stderr, "Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1523 /* Free the old spec. */
1524 if (old_spec && sl->alloc_p)
1525 free (CONST_CAST(char *, old_spec));
1530 /* Accumulate a command (program name and args), and run it. */
1532 typedef const char *const_char_p; /* For DEF_VEC_P. */
1533 DEF_VEC_P(const_char_p);
1534 DEF_VEC_ALLOC_P(const_char_p,heap);
1536 /* Vector of pointers to arguments in the current line of specifications. */
1538 static VEC(const_char_p,heap) *argbuf;
1540 /* Position in the argbuf vector containing the name of the output file
1541 (the value associated with the "-o" flag). */
1543 static int have_o_argbuf_index = 0;
1545 /* Were the options -c, -S or -E passed. */
1546 static int have_c = 0;
1548 /* Was the option -o passed. */
1549 static int have_o = 0;
1551 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1552 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1555 static struct temp_name {
1556 const char *suffix; /* suffix associated with the code. */
1557 int length; /* strlen (suffix). */
1558 int unique; /* Indicates whether %g or %u/%U was used. */
1559 const char *filename; /* associated filename. */
1560 int filename_length; /* strlen (filename). */
1561 struct temp_name *next;
1564 /* Number of commands executed so far. */
1566 static int execution_count;
1568 /* Number of commands that exited with a signal. */
1570 static int signal_count;
1572 /* Allocate the argument vector. */
1577 argbuf = VEC_alloc (const_char_p, heap, 10);
1580 /* Clear out the vector of arguments (after a command is executed). */
1585 VEC_truncate (const_char_p, argbuf, 0);
1588 /* Add one argument to the vector at the end.
1589 This is done when a space is seen or at the end of the line.
1590 If DELETE_ALWAYS is nonzero, the arg is a filename
1591 and the file should be deleted eventually.
1592 If DELETE_FAILURE is nonzero, the arg is a filename
1593 and the file should be deleted if this compilation fails. */
1596 store_arg (const char *arg, int delete_always, int delete_failure)
1598 VEC_safe_push (const_char_p, heap, argbuf, arg);
1600 if (strcmp (arg, "-o") == 0)
1601 have_o_argbuf_index = VEC_length (const_char_p, argbuf);
1602 if (delete_always || delete_failure)
1605 /* If the temporary file we should delete is specified as
1606 part of a joined argument extract the filename. */
1608 && (p = strrchr (arg, '=')))
1610 record_temp_file (arg, delete_always, delete_failure);
1614 /* Load specs from a file name named FILENAME, replacing occurrences of
1615 various different types of line-endings, \r\n, \n\r and just \r, with
1619 load_specs (const char *filename)
1623 struct stat statbuf;
1630 fnotice (stderr, "Reading specs from %s\n", filename);
1632 /* Open and stat the file. */
1633 desc = open (filename, O_RDONLY, 0);
1635 pfatal_with_name (filename);
1636 if (stat (filename, &statbuf) < 0)
1637 pfatal_with_name (filename);
1639 /* Read contents of file into BUFFER. */
1640 buffer = XNEWVEC (char, statbuf.st_size + 1);
1641 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1643 pfatal_with_name (filename);
1644 buffer[readlen] = 0;
1647 specs = XNEWVEC (char, readlen + 1);
1649 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1655 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1657 else if (*(buffer_p + 1) == '\n') /* \r\n */
1671 /* Read compilation specs from a file named FILENAME,
1672 replacing the default ones.
1674 A suffix which starts with `*' is a definition for
1675 one of the machine-specific sub-specs. The "suffix" should be
1676 *asm, *cc1, *cpp, *link, *startfile, etc.
1677 The corresponding spec is stored in asm_spec, etc.,
1678 rather than in the `compilers' vector.
1680 Anything invalid in the file is a fatal error. */
1683 read_specs (const char *filename, int main_p)
1688 buffer = load_specs (filename);
1690 /* Scan BUFFER for specs, putting them in the vector. */
1696 char *in, *out, *p1, *p2, *p3;
1698 /* Advance P in BUFFER to the next nonblank nocomment line. */
1699 p = skip_whitespace (p);
1703 /* Is this a special command that starts with '%'? */
1704 /* Don't allow this for the main specs file, since it would
1705 encourage people to overwrite it. */
1706 if (*p == '%' && !main_p)
1709 while (*p && *p != '\n')
1715 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1716 && (p1[sizeof "%include" - 1] == ' '
1717 || p1[sizeof "%include" - 1] == '\t'))
1721 p1 += sizeof ("%include");
1722 while (*p1 == ' ' || *p1 == '\t')
1725 if (*p1++ != '<' || p[-2] != '>')
1726 fatal_error ("specs %%include syntax malformed after "
1728 (long) (p1 - buffer + 1));
1731 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1732 read_specs (new_filename ? new_filename : p1, FALSE);
1735 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1736 && (p1[sizeof "%include_noerr" - 1] == ' '
1737 || p1[sizeof "%include_noerr" - 1] == '\t'))
1741 p1 += sizeof "%include_noerr";
1742 while (*p1 == ' ' || *p1 == '\t')
1745 if (*p1++ != '<' || p[-2] != '>')
1746 fatal_error ("specs %%include syntax malformed after "
1748 (long) (p1 - buffer + 1));
1751 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1753 read_specs (new_filename, FALSE);
1754 else if (verbose_flag)
1755 fnotice (stderr, "could not find specs file %s\n", p1);
1758 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1759 && (p1[sizeof "%rename" - 1] == ' '
1760 || p1[sizeof "%rename" - 1] == '\t'))
1763 struct spec_list *sl;
1764 struct spec_list *newsl;
1766 /* Get original name. */
1767 p1 += sizeof "%rename";
1768 while (*p1 == ' ' || *p1 == '\t')
1771 if (! ISALPHA ((unsigned char) *p1))
1772 fatal_error ("specs %%rename syntax malformed after "
1774 (long) (p1 - buffer));
1777 while (*p2 && !ISSPACE ((unsigned char) *p2))
1780 if (*p2 != ' ' && *p2 != '\t')
1781 fatal_error ("specs %%rename syntax malformed after "
1783 (long) (p2 - buffer));
1787 while (*p2 == ' ' || *p2 == '\t')
1790 if (! ISALPHA ((unsigned char) *p2))
1791 fatal_error ("specs %%rename syntax malformed after "
1793 (long) (p2 - buffer));
1795 /* Get new spec name. */
1797 while (*p3 && !ISSPACE ((unsigned char) *p3))
1801 fatal_error ("specs %%rename syntax malformed after "
1803 (long) (p3 - buffer));
1806 for (sl = specs; sl; sl = sl->next)
1807 if (name_len == sl->name_len && !strcmp (sl->name, p1))
1811 fatal_error ("specs %s spec was not found to be renamed", p1);
1813 if (strcmp (p1, p2) == 0)
1816 for (newsl = specs; newsl; newsl = newsl->next)
1817 if (strcmp (newsl->name, p2) == 0)
1818 fatal_error ("%s: attempt to rename spec %qs to "
1819 "already defined spec %qs",
1824 fnotice (stderr, "rename spec %s to %s\n", p1, p2);
1826 fnotice (stderr, "spec is '%s'\n\n", *(sl->ptr_spec));
1830 set_spec (p2, *(sl->ptr_spec));
1832 free (CONST_CAST (char *, *(sl->ptr_spec)));
1834 *(sl->ptr_spec) = "";
1839 fatal_error ("specs unknown %% command after %ld characters",
1840 (long) (p1 - buffer));
1843 /* Find the colon that should end the suffix. */
1845 while (*p1 && *p1 != ':' && *p1 != '\n')
1848 /* The colon shouldn't be missing. */
1850 fatal_error ("specs file malformed after %ld characters",
1851 (long) (p1 - buffer));
1853 /* Skip back over trailing whitespace. */
1855 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
1858 /* Copy the suffix to a string. */
1859 suffix = save_string (p, p2 - p);
1860 /* Find the next line. */
1861 p = skip_whitespace (p1 + 1);
1863 fatal_error ("specs file malformed after %ld characters",
1864 (long) (p - buffer));
1867 /* Find next blank line or end of string. */
1868 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
1871 /* Specs end at the blank line and do not include the newline. */
1872 spec = save_string (p, p1 - p);
1875 /* Delete backslash-newline sequences from the spec. */
1880 if (in[0] == '\\' && in[1] == '\n')
1882 else if (in[0] == '#')
1883 while (*in && *in != '\n')
1891 if (suffix[0] == '*')
1893 if (! strcmp (suffix, "*link_command"))
1894 link_command_spec = spec;
1896 set_spec (suffix + 1, spec);
1900 /* Add this pair to the vector. */
1902 = XRESIZEVEC (struct compiler, compilers, n_compilers + 2);
1904 compilers[n_compilers].suffix = suffix;
1905 compilers[n_compilers].spec = spec;
1907 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
1911 link_command_spec = spec;
1914 if (link_command_spec == 0)
1915 fatal_error ("spec file has no spec for linking");
1918 /* Record the names of temporary files we tell compilers to write,
1919 and delete them at the end of the run. */
1921 /* This is the common prefix we use to make temp file names.
1922 It is chosen once for each run of this program.
1923 It is substituted into a spec by %g or %j.
1924 Thus, all temp file names contain this prefix.
1925 In practice, all temp file names start with this prefix.
1927 This prefix comes from the envvar TMPDIR if it is defined;
1928 otherwise, from the P_tmpdir macro if that is defined;
1929 otherwise, in /usr/tmp or /tmp;
1930 or finally the current directory if all else fails. */
1932 static const char *temp_filename;
1934 /* Length of the prefix. */
1936 static int temp_filename_length;
1938 /* Define the list of temporary files to delete. */
1943 struct temp_file *next;
1946 /* Queue of files to delete on success or failure of compilation. */
1947 static struct temp_file *always_delete_queue;
1948 /* Queue of files to delete on failure of compilation. */
1949 static struct temp_file *failure_delete_queue;
1951 /* Record FILENAME as a file to be deleted automatically.
1952 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
1953 otherwise delete it in any case.
1954 FAIL_DELETE nonzero means delete it if a compilation step fails;
1955 otherwise delete it in any case. */
1958 record_temp_file (const char *filename, int always_delete, int fail_delete)
1960 char *const name = xstrdup (filename);
1964 struct temp_file *temp;
1965 for (temp = always_delete_queue; temp; temp = temp->next)
1966 if (! filename_cmp (name, temp->name))
1969 temp = XNEW (struct temp_file);
1970 temp->next = always_delete_queue;
1972 always_delete_queue = temp;
1979 struct temp_file *temp;
1980 for (temp = failure_delete_queue; temp; temp = temp->next)
1981 if (! filename_cmp (name, temp->name))
1984 temp = XNEW (struct temp_file);
1985 temp->next = failure_delete_queue;
1987 failure_delete_queue = temp;
1993 /* Delete all the temporary files whose names we previously recorded. */
1995 #ifndef DELETE_IF_ORDINARY
1996 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
1999 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2000 if (unlink (NAME) < 0) \
2002 perror_with_name (NAME); \
2007 delete_if_ordinary (const char *name)
2013 printf ("Delete %s? (y or n) ", name);
2017 while ((c = getchar ()) != '\n' && c != EOF)
2020 if (i == 'y' || i == 'Y')
2022 DELETE_IF_ORDINARY (name, st, verbose_flag);
2026 delete_temp_files (void)
2028 struct temp_file *temp;
2030 for (temp = always_delete_queue; temp; temp = temp->next)
2031 delete_if_ordinary (temp->name);
2032 always_delete_queue = 0;
2035 /* Delete all the files to be deleted on error. */
2038 delete_failure_queue (void)
2040 struct temp_file *temp;
2042 for (temp = failure_delete_queue; temp; temp = temp->next)
2043 delete_if_ordinary (temp->name);
2047 clear_failure_queue (void)
2049 failure_delete_queue = 0;
2052 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2054 If DO_MULTI is true iterate over the paths twice, first with multilib
2055 suffix then without, otherwise iterate over the paths once without
2056 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2057 to avoid visiting the same path twice, but we could do better. For
2058 instance, /usr/lib/../lib is considered different from /usr/lib.
2059 At least EXTRA_SPACE chars past the end of the path passed to
2060 CALLBACK are available for use by the callback.
2061 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2063 Returns the value returned by CALLBACK. */
2066 for_each_path (const struct path_prefix *paths,
2069 void *(*callback) (char *, void *),
2070 void *callback_info)
2072 struct prefix_list *pl;
2073 const char *multi_dir = NULL;
2074 const char *multi_os_dir = NULL;
2075 const char *multi_suffix;
2076 const char *just_multi_suffix;
2079 bool skip_multi_dir = false;
2080 bool skip_multi_os_dir = false;
2082 multi_suffix = machine_suffix;
2083 just_multi_suffix = just_machine_suffix;
2084 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0)
2086 multi_dir = concat (multilib_dir, dir_separator_str, NULL);
2087 multi_suffix = concat (multi_suffix, multi_dir, NULL);
2088 just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL);
2090 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0)
2091 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL);
2095 size_t multi_dir_len = 0;
2096 size_t multi_os_dir_len = 0;
2098 size_t just_suffix_len;
2102 multi_dir_len = strlen (multi_dir);
2104 multi_os_dir_len = strlen (multi_os_dir);
2105 suffix_len = strlen (multi_suffix);
2106 just_suffix_len = strlen (just_multi_suffix);
2110 len = paths->max_len + extra_space + 1;
2111 if (suffix_len > multi_os_dir_len)
2114 len += multi_os_dir_len;
2115 path = XNEWVEC (char, len);
2118 for (pl = paths->plist; pl != 0; pl = pl->next)
2120 len = strlen (pl->prefix);
2121 memcpy (path, pl->prefix, len);
2123 /* Look first in MACHINE/VERSION subdirectory. */
2124 if (!skip_multi_dir)
2126 memcpy (path + len, multi_suffix, suffix_len + 1);
2127 ret = callback (path, callback_info);
2132 /* Some paths are tried with just the machine (ie. target)
2133 subdir. This is used for finding as, ld, etc. */
2135 && pl->require_machine_suffix == 2)
2137 memcpy (path + len, just_multi_suffix, just_suffix_len + 1);
2138 ret = callback (path, callback_info);
2143 /* Now try the base path. */
2144 if (!pl->require_machine_suffix
2145 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir))
2147 const char *this_multi;
2148 size_t this_multi_len;
2150 if (pl->os_multilib)
2152 this_multi = multi_os_dir;
2153 this_multi_len = multi_os_dir_len;
2157 this_multi = multi_dir;
2158 this_multi_len = multi_dir_len;
2162 memcpy (path + len, this_multi, this_multi_len + 1);
2166 ret = callback (path, callback_info);
2174 if (multi_dir == NULL && multi_os_dir == NULL)
2177 /* Run through the paths again, this time without multilibs.
2178 Don't repeat any we have already seen. */
2181 free (CONST_CAST (char *, multi_dir));
2183 free (CONST_CAST (char *, multi_suffix));
2184 multi_suffix = machine_suffix;
2185 free (CONST_CAST (char *, just_multi_suffix));
2186 just_multi_suffix = just_machine_suffix;
2189 skip_multi_dir = true;
2192 free (CONST_CAST (char *, multi_os_dir));
2193 multi_os_dir = NULL;
2196 skip_multi_os_dir = true;
2201 free (CONST_CAST (char *, multi_dir));
2202 free (CONST_CAST (char *, multi_suffix));
2203 free (CONST_CAST (char *, just_multi_suffix));
2206 free (CONST_CAST (char *, multi_os_dir));
2212 /* Callback for build_search_list. Adds path to obstack being built. */
2214 struct add_to_obstack_info {
2221 add_to_obstack (char *path, void *data)
2223 struct add_to_obstack_info *info = (struct add_to_obstack_info *) data;
2225 if (info->check_dir && !is_directory (path, false))
2228 if (!info->first_time)
2229 obstack_1grow (info->ob, PATH_SEPARATOR);
2231 obstack_grow (info->ob, path, strlen (path));
2233 info->first_time = false;
2237 /* Add or change the value of an environment variable, outputting the
2238 change to standard error if in verbose mode. */
2240 xputenv (const char *string)
2243 fnotice (stderr, "%s\n", string);
2244 putenv (CONST_CAST (char *, string));
2247 /* Build a list of search directories from PATHS.
2248 PREFIX is a string to prepend to the list.
2249 If CHECK_DIR_P is true we ensure the directory exists.
2250 If DO_MULTI is true, multilib paths are output first, then
2252 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2253 It is also used by the --print-search-dirs flag. */
2256 build_search_list (const struct path_prefix *paths, const char *prefix,
2257 bool check_dir, bool do_multi)
2259 struct add_to_obstack_info info;
2261 info.ob = &collect_obstack;
2262 info.check_dir = check_dir;
2263 info.first_time = true;
2265 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2266 obstack_1grow (&collect_obstack, '=');
2268 for_each_path (paths, do_multi, 0, add_to_obstack, &info);
2270 obstack_1grow (&collect_obstack, '\0');
2271 return XOBFINISH (&collect_obstack, char *);
2274 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2278 putenv_from_prefixes (const struct path_prefix *paths, const char *env_var,
2281 xputenv (build_search_list (paths, env_var, true, do_multi));
2284 /* Check whether NAME can be accessed in MODE. This is like access,
2285 except that it never considers directories to be executable. */
2288 access_check (const char *name, int mode)
2294 if (stat (name, &st) < 0
2295 || S_ISDIR (st.st_mode))
2299 return access (name, mode);
2302 /* Callback for find_a_file. Appends the file name to the directory
2303 path. If the resulting file exists in the right mode, return the
2304 full pathname to the file. */
2306 struct file_at_path_info {
2315 file_at_path (char *path, void *data)
2317 struct file_at_path_info *info = (struct file_at_path_info *) data;
2318 size_t len = strlen (path);
2320 memcpy (path + len, info->name, info->name_len);
2321 len += info->name_len;
2323 /* Some systems have a suffix for executable files.
2324 So try appending that first. */
2325 if (info->suffix_len)
2327 memcpy (path + len, info->suffix, info->suffix_len + 1);
2328 if (access_check (path, info->mode) == 0)
2333 if (access_check (path, info->mode) == 0)
2339 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2340 access to check permissions. If DO_MULTI is true, search multilib
2341 paths then non-multilib paths, otherwise do not search multilib paths.
2342 Return 0 if not found, otherwise return its name, allocated with malloc. */
2345 find_a_file (const struct path_prefix *pprefix, const char *name, int mode,
2348 struct file_at_path_info info;
2350 #ifdef DEFAULT_ASSEMBLER
2351 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2352 return xstrdup (DEFAULT_ASSEMBLER);
2355 #ifdef DEFAULT_LINKER
2356 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2357 return xstrdup (DEFAULT_LINKER);
2360 /* Determine the filename to execute (special case for absolute paths). */
2362 if (IS_ABSOLUTE_PATH (name))
2364 if (access (name, mode) == 0)
2365 return xstrdup (name);
2371 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "";
2372 info.name_len = strlen (info.name);
2373 info.suffix_len = strlen (info.suffix);
2376 return (char*) for_each_path (pprefix, do_multi,
2377 info.name_len + info.suffix_len,
2378 file_at_path, &info);
2381 /* Ranking of prefixes in the sort list. -B prefixes are put before
2384 enum path_prefix_priority
2386 PREFIX_PRIORITY_B_OPT,
2387 PREFIX_PRIORITY_LAST
2390 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2391 order according to PRIORITY. Within each PRIORITY, new entries are
2394 If WARN is nonzero, we will warn if no file is found
2395 through this prefix. WARN should point to an int
2396 which will be set to 1 if this entry is used.
2398 COMPONENT is the value to be passed to update_path.
2400 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2401 the complete value of machine_suffix.
2402 2 means try both machine_suffix and just_machine_suffix. */
2405 add_prefix (struct path_prefix *pprefix, const char *prefix,
2406 const char *component, /* enum prefix_priority */ int priority,
2407 int require_machine_suffix, int os_multilib)
2409 struct prefix_list *pl, **prev;
2412 for (prev = &pprefix->plist;
2413 (*prev) != NULL && (*prev)->priority <= priority;
2414 prev = &(*prev)->next)
2417 /* Keep track of the longest prefix. */
2419 prefix = update_path (prefix, component);
2420 len = strlen (prefix);
2421 if (len > pprefix->max_len)
2422 pprefix->max_len = len;
2424 pl = XNEW (struct prefix_list);
2425 pl->prefix = prefix;
2426 pl->require_machine_suffix = require_machine_suffix;
2427 pl->priority = priority;
2428 pl->os_multilib = os_multilib;
2430 /* Insert after PREV. */
2435 /* Same as add_prefix, but prepending target_system_root to prefix. */
2436 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2438 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2439 const char *component,
2440 /* enum prefix_priority */ int priority,
2441 int require_machine_suffix, int os_multilib)
2443 if (!IS_ABSOLUTE_PATH (prefix))
2444 fatal_error ("system path %qs is not absolute", prefix);
2446 if (target_system_root)
2448 if (target_sysroot_suffix)
2449 prefix = concat (target_sysroot_suffix, prefix, NULL);
2450 prefix = concat (target_system_root, prefix, NULL);
2452 /* We have to override this because GCC's notion of sysroot
2453 moves along with GCC. */
2457 add_prefix (pprefix, prefix, component, priority,
2458 require_machine_suffix, os_multilib);
2461 /* Execute the command specified by the arguments on the current line of spec.
2462 When using pipes, this includes several piped-together commands
2463 with `|' between them.
2465 Return 0 if successful, -1 if failed. */
2471 int n_commands; /* # of command. */
2473 struct pex_obj *pex;
2476 const char *prog; /* program name. */
2477 const char **argv; /* vector of args. */
2481 struct command *commands; /* each command buffer with above info. */
2483 gcc_assert (!processing_spec_function);
2487 string = find_a_file (&exec_prefixes,
2488 VEC_index (const_char_p, argbuf, 0), X_OK, false);
2490 VEC_replace (const_char_p, argbuf, 0, string);
2491 insert_wrapper (wrapper_string);
2494 /* Count # of piped commands. */
2495 for (n_commands = 1, i = 0; VEC_iterate (const_char_p, argbuf, i, arg); i++)
2496 if (strcmp (arg, "|") == 0)
2499 /* Get storage for each command. */
2500 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2502 /* Split argbuf into its separate piped processes,
2503 and record info about each one.
2504 Also search for the programs that are to be run. */
2506 VEC_safe_push (const_char_p, heap, argbuf, 0);
2508 commands[0].prog = VEC_index (const_char_p, argbuf, 0); /* first command. */
2509 commands[0].argv = VEC_address (const_char_p, argbuf);
2511 if (!wrapper_string)
2513 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false);
2514 commands[0].argv[0] = (string) ? string : commands[0].argv[0];
2517 for (n_commands = 1, i = 0; VEC_iterate (const_char_p, argbuf, i, arg); i++)
2518 if (arg && strcmp (arg, "|") == 0)
2519 { /* each command. */
2520 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2521 fatal_error ("-pipe not supported");
2523 VEC_replace (const_char_p, argbuf, i, 0); /* Termination of
2525 commands[n_commands].prog = VEC_index (const_char_p, argbuf, i + 1);
2526 commands[n_commands].argv
2527 = &(VEC_address (const_char_p, argbuf))[i + 1];
2528 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2531 commands[n_commands].argv[0] = string;
2535 /* If -v, print what we are about to do, and maybe query. */
2539 /* For help listings, put a blank line between sub-processes. */
2540 if (print_help_list)
2541 fputc ('\n', stderr);
2543 /* Print each piped command as a separate line. */
2544 for (i = 0; i < n_commands; i++)
2546 const char *const *j;
2548 if (verbose_only_flag)
2550 for (j = commands[i].argv; *j; j++)
2553 for (p = *j; *p; ++p)
2554 if (!ISALNUM ((unsigned char) *p)
2555 && *p != '_' && *p != '/' && *p != '-' && *p != '.')
2559 fprintf (stderr, " \"");
2560 for (p = *j; *p; ++p)
2562 if (*p == '"' || *p == '\\' || *p == '$')
2563 fputc ('\\', stderr);
2566 fputc ('"', stderr);
2568 /* If it's empty, print "". */
2570 fprintf (stderr, " \"\"");
2572 fprintf (stderr, " %s", *j);
2576 for (j = commands[i].argv; *j; j++)
2577 /* If it's empty, print "". */
2579 fprintf (stderr, " \"\"");
2581 fprintf (stderr, " %s", *j);
2583 /* Print a pipe symbol after all but the last command. */
2584 if (i + 1 != n_commands)
2585 fprintf (stderr, " |");
2586 fprintf (stderr, "\n");
2589 if (verbose_only_flag != 0)
2591 /* verbose_only_flag should act as if the spec was
2592 executed, so increment execution_count before
2593 returning. This prevents spurious warnings about
2594 unused linker input files, etc. */
2599 fnotice (stderr, "\nGo ahead? (y or n) ");
2603 while (getchar () != '\n')
2606 if (i != 'y' && i != 'Y')
2611 #ifdef ENABLE_VALGRIND_CHECKING
2612 /* Run the each command through valgrind. To simplify prepending the
2613 path to valgrind and the option "-q" (for quiet operation unless
2614 something triggers), we allocate a separate argv array. */
2616 for (i = 0; i < n_commands; i++)
2622 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2625 argv = XALLOCAVEC (const char *, argc + 3);
2627 argv[0] = VALGRIND_PATH;
2629 for (j = 2; j < argc + 2; j++)
2630 argv[j] = commands[i].argv[j - 2];
2633 commands[i].argv = argv;
2634 commands[i].prog = argv[0];
2638 /* Run each piped subprocess. */
2640 pex = pex_init (PEX_USE_PIPES | ((report_times || report_times_to_file)
2641 ? PEX_RECORD_TIMES : 0),
2642 progname, temp_filename);
2644 fatal_error ("pex_init failed: %m");
2646 for (i = 0; i < n_commands; i++)
2650 const char *string = commands[i].argv[0];
2652 errmsg = pex_run (pex,
2653 ((i + 1 == n_commands ? PEX_LAST : 0)
2654 | (string == commands[i].prog ? PEX_SEARCH : 0)),
2655 string, CONST_CAST (char **, commands[i].argv),
2660 fatal_error (errmsg);
2664 pfatal_with_name (errmsg);
2668 if (string != commands[i].prog)
2669 free (CONST_CAST (char *, string));
2674 /* Wait for all the subprocesses to finish. */
2678 struct pex_time *times = NULL;
2681 statuses = (int *) alloca (n_commands * sizeof (int));
2682 if (!pex_get_status (pex, n_commands, statuses))
2683 fatal_error ("failed to get exit status: %m");
2685 if (report_times || report_times_to_file)
2687 times = (struct pex_time *) alloca (n_commands * sizeof (struct pex_time));
2688 if (!pex_get_times (pex, n_commands, times))
2689 fatal_error ("failed to get process times: %m");
2694 for (i = 0; i < n_commands; ++i)
2696 int status = statuses[i];
2698 if (WIFSIGNALED (status))
2701 /* SIGPIPE is a special case. It happens in -pipe mode
2702 when the compiler dies before the preprocessor is done,
2703 or the assembler dies before the compiler is done.
2704 There's generally been an error already, and this is
2705 just fallout. So don't generate another error unless
2706 we would otherwise have succeeded. */
2707 if (WTERMSIG (status) == SIGPIPE
2708 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2715 internal_error ("%s (program %s)",
2716 strsignal (WTERMSIG (status)), commands[i].prog);
2718 else if (WIFEXITED (status)
2719 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2721 if (WEXITSTATUS (status) > greatest_status)
2722 greatest_status = WEXITSTATUS (status);
2726 if (report_times || report_times_to_file)
2728 struct pex_time *pt = ×[i];
2731 ut = ((double) pt->user_seconds
2732 + (double) pt->user_microseconds / 1.0e6);
2733 st = ((double) pt->system_seconds
2734 + (double) pt->system_microseconds / 1.0e6);
2739 fnotice (stderr, "# %s %.2f %.2f\n",
2740 commands[i].prog, ut, st);
2742 if (report_times_to_file)
2745 const char *const *j;
2747 fprintf (report_times_to_file, "%g %g", ut, st);
2749 for (j = &commands[i].prog; *j; j = &commands[i].argv[++c])
2752 for (p = *j; *p; ++p)
2753 if (*p == '"' || *p == '\\' || *p == '$'
2759 fprintf (report_times_to_file, " \"");
2760 for (p = *j; *p; ++p)
2762 if (*p == '"' || *p == '\\' || *p == '$')
2763 fputc ('\\', report_times_to_file);
2764 fputc (*p, report_times_to_file);
2766 fputc ('"', report_times_to_file);
2769 fprintf (report_times_to_file, " %s", *j);
2772 fputc ('\n', report_times_to_file);
2782 /* Find all the switches given to us
2783 and make a vector describing them.
2784 The elements of the vector are strings, one per switch given.
2785 If a switch uses following arguments, then the `part1' field
2786 is the switch itself and the `args' field
2787 is a null-terminated vector containing the following arguments.
2788 Bits in the `live_cond' field are:
2789 SWITCH_LIVE to indicate this switch is true in a conditional spec.
2790 SWITCH_FALSE to indicate this switch is overridden by a later switch.
2791 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
2792 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
2793 in all do_spec calls afterwards. Used for %<S from self specs.
2794 The `validated' field is nonzero if any spec has looked at this switch;
2795 if it remains zero at the end of the run, it must be meaningless. */
2797 #define SWITCH_LIVE (1 << 0)
2798 #define SWITCH_FALSE (1 << 1)
2799 #define SWITCH_IGNORE (1 << 2)
2800 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
2801 #define SWITCH_KEEP_FOR_GCC (1 << 4)
2807 unsigned int live_cond;
2808 unsigned char validated;
2809 unsigned char ordering;
2812 static struct switchstr *switches;
2814 static int n_switches;
2816 static int n_switches_alloc;
2818 /* Set to zero if -fcompare-debug is disabled, positive if it's
2819 enabled and we're running the first compilation, negative if it's
2820 enabled and we're running the second compilation. For most of the
2821 time, it's in the range -1..1, but it can be temporarily set to 2
2822 or 3 to indicate that the -fcompare-debug flags didn't come from
2823 the command-line, but rather from the GCC_COMPARE_DEBUG environment
2824 variable, until a synthesized -fcompare-debug flag is added to the
2828 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
2829 int compare_debug_second;
2831 /* Set to the flags that should be passed to the second compilation in
2832 a -fcompare-debug compilation. */
2833 const char *compare_debug_opt;
2835 static struct switchstr *switches_debug_check[2];
2837 static int n_switches_debug_check[2];
2839 static int n_switches_alloc_debug_check[2];
2841 static char *debug_check_temp_file[2];
2843 /* Language is one of three things:
2845 1) The name of a real programming language.
2846 2) NULL, indicating that no one has figured out
2848 3) '*', indicating that the file should be passed
2853 const char *language;
2854 struct compiler *incompiler;
2859 /* Also a vector of input files specified. */
2861 static struct infile *infiles;
2865 static int n_infiles_alloc;
2867 /* True if multiple input files are being compiled to a single
2870 static bool combine_inputs;
2872 /* This counts the number of libraries added by lang_specific_driver, so that
2873 we can tell if there were any user supplied any files or libraries. */
2875 static int added_libraries;
2877 /* And a vector of corresponding output files is made up later. */
2879 const char **outfiles;
2881 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2883 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2884 is true if we should look for an executable suffix. DO_OBJ
2885 is true if we should look for an object suffix. */
2888 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
2889 int do_obj ATTRIBUTE_UNUSED)
2891 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2899 len = strlen (name);
2901 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2902 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2903 if (do_obj && len > 2
2904 && name[len - 2] == '.'
2905 && name[len - 1] == 'o')
2907 obstack_grow (&obstack, name, len - 2);
2908 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2909 name = XOBFINISH (&obstack, const char *);
2913 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2914 /* If there is no filetype, make it the executable suffix (which includes
2915 the "."). But don't get confused if we have just "-o". */
2916 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
2919 for (i = len - 1; i >= 0; i--)
2920 if (IS_DIR_SEPARATOR (name[i]))
2923 for (i++; i < len; i++)
2927 obstack_grow (&obstack, name, len);
2928 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
2929 strlen (TARGET_EXECUTABLE_SUFFIX));
2930 name = XOBFINISH (&obstack, const char *);
2937 /* Display the command line switches accepted by gcc. */
2941 printf (_("Usage: %s [options] file...\n"), progname);
2942 fputs (_("Options:\n"), stdout);
2944 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
2945 fputs (_(" --help Display this information\n"), stdout);
2946 fputs (_(" --target-help Display target specific command line options\n"), stdout);
2947 fputs (_(" --help={target|optimizers|warnings|params|[^]{joined|separate|undocumented}}[,...]\n"), stdout);
2948 fputs (_(" Display specific types of command line options\n"), stdout);
2950 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
2951 fputs (_(" --version Display compiler version information\n"), stdout);
2952 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
2953 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
2954 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
2955 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
2956 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
2957 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
2958 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
2959 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
2961 -print-multi-lib Display the mapping between command line options and\n\
2962 multiple library search directories\n"), stdout);
2963 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
2964 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout);
2965 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout);
2966 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
2967 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
2968 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
2969 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
2970 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
2971 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
2972 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
2973 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout);
2975 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
2976 prefixes to other gcc components\n"), stdout);
2977 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
2978 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
2979 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
2980 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
2982 --sysroot=<directory> Use <directory> as the root directory for headers\n\
2983 and libraries\n"), stdout);
2984 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
2985 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
2986 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
2987 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
2988 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
2989 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
2990 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
2991 fputs (_(" -pie Create a position independent executable\n"), stdout);
2992 fputs (_(" -shared Create a shared library\n"), stdout);
2994 -x <language> Specify the language of the following input files\n\
2995 Permissible languages include: c c++ assembler none\n\
2996 'none' means revert to the default behavior of\n\
2997 guessing the language based on the file's extension\n\
3001 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3002 passed on to the various sub-processes invoked by %s. In order to pass\n\
3003 other options on to these processes the -W<letter> options must be used.\n\
3006 /* The rest of the options are displayed by invocations of the various
3011 add_preprocessor_option (const char *option, int len)
3013 VEC_safe_push (char_p, heap, preprocessor_options,
3014 save_string (option, len));
3018 add_assembler_option (const char *option, int len)
3020 VEC_safe_push (char_p, heap, assembler_options, save_string (option, len));
3024 add_linker_option (const char *option, int len)
3026 VEC_safe_push (char_p, heap, linker_options, save_string (option, len));
3029 /* Allocate space for an input file in infiles. */
3034 if (n_infiles_alloc == 0)
3036 n_infiles_alloc = 16;
3037 infiles = XNEWVEC (struct infile, n_infiles_alloc);
3039 else if (n_infiles_alloc == n_infiles)
3041 n_infiles_alloc *= 2;
3042 infiles = XRESIZEVEC (struct infile, infiles, n_infiles_alloc);
3046 /* Store an input file with the given NAME and LANGUAGE in
3050 add_infile (const char *name, const char *language)
3053 infiles[n_infiles].name = name;
3054 infiles[n_infiles++].language = language;
3057 /* Allocate space for a switch in switches. */
3062 if (n_switches_alloc == 0)
3064 n_switches_alloc = 16;
3065 switches = XNEWVEC (struct switchstr, n_switches_alloc);
3067 else if (n_switches_alloc == n_switches)
3069 n_switches_alloc *= 2;
3070 switches = XRESIZEVEC (struct switchstr, switches, n_switches_alloc);
3074 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3075 as validated if VALIDATED. */
3078 save_switch (const char *opt, size_t n_args, const char *const *args,
3082 switches[n_switches].part1 = opt + 1;
3084 switches[n_switches].args = 0;
3087 switches[n_switches].args = XNEWVEC (const char *, n_args + 1);
3088 memcpy (switches[n_switches].args, args, n_args * sizeof (const char *));
3089 switches[n_switches].args[n_args] = NULL;
3092 switches[n_switches].live_cond = 0;
3093 switches[n_switches].validated = validated;
3094 switches[n_switches].ordering = 0;
3098 /* Handle an option DECODED that is unknown to the option-processing
3102 driver_unknown_option_callback (const struct cl_decoded_option *decoded)
3104 const char *opt = decoded->arg;
3105 if (opt[1] == 'W' && opt[2] == 'n' && opt[3] == 'o' && opt[4] == '-'
3106 && !(decoded->errors & CL_ERR_NEGATIVE))
3108 /* Leave unknown -Wno-* options for the compiler proper, to be
3109 diagnosed only if there are warnings. */
3110 save_switch (decoded->canonical_option[0],
3111 decoded->canonical_option_num_elements - 1,
3112 &decoded->canonical_option[1], false);
3119 /* Handle an option DECODED that is not marked as CL_DRIVER.
3120 LANG_MASK will always be CL_DRIVER. */
3123 driver_wrong_lang_callback (const struct cl_decoded_option *decoded,
3124 unsigned int lang_mask ATTRIBUTE_UNUSED)
3126 /* At this point, non-driver options are accepted (and expected to
3127 be passed down by specs) unless marked to be rejected by the
3128 driver. Options to be rejected by the driver but accepted by the
3129 compilers proper are treated just like completely unknown
3131 const struct cl_option *option = &cl_options[decoded->opt_index];
3133 if (option->cl_reject_driver)
3134 error ("unrecognized command line option %qs",
3135 decoded->orig_option_with_args_text);
3137 save_switch (decoded->canonical_option[0],
3138 decoded->canonical_option_num_elements - 1,
3139 &decoded->canonical_option[1], false);
3142 static const char *spec_lang = 0;
3143 static int last_language_n_infiles;
3145 /* Handle a driver option; arguments and return value as for
3149 driver_handle_option (struct gcc_options *opts,
3150 struct gcc_options *opts_set,
3151 const struct cl_decoded_option *decoded,
3152 unsigned int lang_mask ATTRIBUTE_UNUSED, int kind,
3154 const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED,
3155 diagnostic_context *dc)
3157 size_t opt_index = decoded->opt_index;
3158 const char *arg = decoded->arg;
3159 const char *compare_debug_replacement_opt;
3160 int value = decoded->value;
3161 bool validated = false;
3162 bool do_save = true;
3164 gcc_assert (opts == &global_options);
3165 gcc_assert (opts_set == &global_options_set);
3166 gcc_assert (kind == DK_UNSPECIFIED);
3167 gcc_assert (loc == UNKNOWN_LOCATION);
3168 gcc_assert (dc == global_dc);
3174 struct spec_list *sl;
3176 for (sl = specs; sl; sl = sl->next)
3177 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3178 if (link_command_spec)
3179 printf ("*link_command:\n%s\n\n", link_command_spec);
3183 case OPT_dumpversion:
3184 printf ("%s\n", spec_version);
3187 case OPT_dumpmachine:
3188 printf ("%s\n", spec_machine);
3194 /* CPP driver cannot obtain switch from cc1_options. */
3196 add_preprocessor_option ("--version", strlen ("--version"));
3197 add_assembler_option ("--version", strlen ("--version"));
3198 add_linker_option ("--version", strlen ("--version"));
3202 print_help_list = 1;
3204 /* CPP driver cannot obtain switch from cc1_options. */
3206 add_preprocessor_option ("--help", 6);
3207 add_assembler_option ("--help", 6);
3208 add_linker_option ("--help", 6);
3212 print_subprocess_help = 2;
3215 case OPT__target_help:
3216 print_subprocess_help = 1;
3218 /* CPP driver cannot obtain switch from cc1_options. */
3220 add_preprocessor_option ("--target-help", 13);
3221 add_assembler_option ("--target-help", 13);
3222 add_linker_option ("--target-help", 13);
3225 case OPT_pass_exit_codes:
3226 case OPT_print_search_dirs:
3227 case OPT_print_file_name_:
3228 case OPT_print_prog_name_:
3229 case OPT_print_multi_lib:
3230 case OPT_print_multi_directory:
3231 case OPT_print_sysroot:
3232 case OPT_print_multi_os_directory:
3233 case OPT_print_sysroot_headers_suffix:
3236 /* These options set the variables specified in common.opt
3237 automatically, and do not need to be saved for spec
3242 case OPT_print_libgcc_file_name:
3243 print_file_name = "libgcc.a";
3247 case OPT_fcompare_debug_second:
3248 compare_debug_second = 1;
3251 case OPT_fcompare_debug:
3255 compare_debug_replacement_opt = "-fcompare-debug=";
3257 goto compare_debug_with_arg;
3260 compare_debug_replacement_opt = "-fcompare-debug=-gtoggle";
3262 goto compare_debug_with_arg;
3269 case OPT_fcompare_debug_:
3270 compare_debug_replacement_opt = decoded->canonical_option[0];
3271 compare_debug_with_arg:
3272 gcc_assert (decoded->canonical_option_num_elements == 1);
3273 gcc_assert (arg != NULL);
3278 if (compare_debug < 0)
3279 compare_debug_opt = NULL;
3281 compare_debug_opt = arg;
3282 save_switch (compare_debug_replacement_opt, 0, NULL, validated);
3288 /* Pass the rest of this option to the assembler. */
3290 /* Split the argument at commas. */
3292 for (j = 0; arg[j]; j++)
3295 add_assembler_option (arg + prev, j - prev);
3299 /* Record the part after the last comma. */
3300 add_assembler_option (arg + prev, j - prev);
3308 /* Pass the rest of this option to the preprocessor. */
3310 /* Split the argument at commas. */
3312 for (j = 0; arg[j]; j++)
3315 add_preprocessor_option (arg + prev, j - prev);
3319 /* Record the part after the last comma. */
3320 add_preprocessor_option (arg + prev, j - prev);
3328 /* Split the argument at commas. */
3330 for (j = 0; arg[j]; j++)
3333 add_infile (save_string (arg + prev, j - prev), "*");
3336 /* Record the part after the last comma. */
3337 add_infile (arg + prev, "*");
3343 add_infile (arg, "*");
3347 case OPT_Xpreprocessor:
3348 add_preprocessor_option (arg, strlen (arg));
3352 case OPT_Xassembler:
3353 add_assembler_option (arg, strlen (arg));
3358 /* POSIX allows separation of -l and the lib arg; canonicalize
3359 by concatenating -l with its arg */
3360 add_infile (concat ("-l", arg, NULL), "*");
3365 /* Similarly, canonicalize -L for linkers that may not accept
3366 separate arguments. */
3367 save_switch (concat ("-L", arg, NULL), 0, NULL, validated);
3372 save_switch (concat ("-F", arg, NULL), 0, NULL, validated);
3375 case OPT_save_temps:
3376 save_temps_flag = SAVE_TEMPS_CWD;
3380 case OPT_save_temps_:
3381 if (strcmp (arg, "cwd") == 0)
3382 save_temps_flag = SAVE_TEMPS_CWD;
3383 else if (strcmp (arg, "obj") == 0
3384 || strcmp (arg, "object") == 0)
3385 save_temps_flag = SAVE_TEMPS_OBJ;
3387 fatal_error ("%qs is an unknown -save-temps option",
3388 decoded->orig_option_with_args_text);
3391 case OPT_no_canonical_prefixes:
3392 /* Already handled as a special case, so ignored here. */
3398 /* These options set the variables specified in common.opt
3399 automatically, but do need to be saved for spec
3405 struct user_specs *user = XNEW (struct user_specs);
3407 user->next = (struct user_specs *) 0;
3408 user->filename = arg;
3409 if (user_specs_tail)
3410 user_specs_tail->next = user;
3412 user_specs_head = user;
3413 user_specs_tail = user;
3419 target_system_root = arg;
3420 target_system_root_changed = 1;
3425 if (report_times_to_file)
3426 fclose (report_times_to_file);
3427 report_times_to_file = fopen (arg, "a");
3433 This is similar to -v except that there is no execution
3434 of the commands and the echoed arguments are quoted. It
3435 is intended for use in shell scripts to capture the
3436 driver-generated command line. */
3437 verbose_only_flag++;
3444 size_t len = strlen (arg);
3446 /* Catch the case where the user has forgotten to append a
3447 directory separator to the path. Note, they may be using
3448 -B to add an executable name prefix, eg "i386-elf-", in
3449 order to distinguish between multiple installations of
3450 GCC in the same directory. Hence we must check to see
3451 if appending a directory separator actually makes a
3452 valid directory name. */
3453 if (!IS_DIR_SEPARATOR (arg[len - 1])
3454 && is_directory (arg, false))
3456 char *tmp = XNEWVEC (char, len + 2);
3458 tmp[len] = DIR_SEPARATOR;
3463 add_prefix (&exec_prefixes, arg, NULL,
3464 PREFIX_PRIORITY_B_OPT, 0, 0);
3465 add_prefix (&startfile_prefixes, arg, NULL,
3466 PREFIX_PRIORITY_B_OPT, 0, 0);
3467 add_prefix (&include_prefixes, arg, NULL,
3468 PREFIX_PRIORITY_B_OPT, 0, 0);
3475 if (!strcmp (spec_lang, "none"))
3476 /* Suppress the warning if -xnone comes after the last input
3477 file, because alternate command interfaces like g++ might
3478 find it useful to place -xnone after each input file. */
3481 last_language_n_infiles = n_infiles;
3487 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3488 arg = convert_filename (arg, ! have_c, 0);
3490 /* Save the output name in case -save-temps=obj was used. */
3491 save_temps_prefix = xstrdup (arg);
3492 /* On some systems, ld cannot handle "-o" without a space. So
3493 split the option from its argument. */
3494 save_switch ("-o", 1, &arg, validated);
3497 case OPT_static_libgcc:
3498 case OPT_shared_libgcc:
3499 case OPT_static_libgfortran:
3500 case OPT_static_libstdc__:
3501 /* These are always valid, since gcc.c itself understands the
3502 first two, gfortranspec.c understands -static-libgfortran and
3503 g++spec.c understands -static-libstdc++ */
3508 /* Various driver options need no special processing at this
3509 point, having been handled in a prescan above or being
3510 handled by specs. */
3515 save_switch (decoded->canonical_option[0],
3516 decoded->canonical_option_num_elements - 1,
3517 &decoded->canonical_option[1], validated);
3521 /* Put the driver's standard set of option handlers in *HANDLERS. */
3524 set_option_handlers (struct cl_option_handlers *handlers)
3526 handlers->unknown_option_callback = driver_unknown_option_callback;
3527 handlers->wrong_lang_callback = driver_wrong_lang_callback;
3528 handlers->num_handlers = 3;
3529 handlers->handlers[0].handler = driver_handle_option;
3530 handlers->handlers[0].mask = CL_DRIVER;
3531 handlers->handlers[1].handler = common_handle_option;
3532 handlers->handlers[1].mask = CL_COMMON;
3533 handlers->handlers[2].handler = target_handle_option;
3534 handlers->handlers[2].mask = CL_TARGET;
3537 /* Create the vector `switches' and its contents.
3538 Store its length in `n_switches'. */
3541 process_command (unsigned int decoded_options_count,
3542 struct cl_decoded_option *decoded_options)
3546 const char *tooldir_prefix;
3547 char *(*get_relative_prefix) (const char *, const char *,
3548 const char *) = NULL;
3549 struct cl_option_handlers handlers;
3552 gcc_exec_prefix = getenv ("GCC_EXEC_PREFIX");
3556 added_libraries = 0;
3558 /* Figure compiler version from version string. */
3560 compiler_version = temp1 = xstrdup (version_string);
3562 for (; *temp1; ++temp1)
3571 /* Handle any -no-canonical-prefixes flag early, to assign the function
3572 that builds relative prefixes. This function creates default search
3573 paths that are needed later in normal option handling. */
3575 for (j = 1; j < decoded_options_count; j++)
3577 if (decoded_options[j].opt_index == OPT_no_canonical_prefixes)
3579 get_relative_prefix = make_relative_prefix_ignore_links;
3583 if (! get_relative_prefix)
3584 get_relative_prefix = make_relative_prefix;
3586 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3587 see if we can create it from the pathname specified in
3588 decoded_options[0].arg. */
3590 gcc_libexec_prefix = standard_libexec_prefix;
3592 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3593 if (!gcc_exec_prefix)
3595 gcc_exec_prefix = get_relative_prefix (decoded_options[0].arg,
3596 standard_bindir_prefix,
3597 standard_exec_prefix);
3598 gcc_libexec_prefix = get_relative_prefix (decoded_options[0].arg,
3599 standard_bindir_prefix,
3600 standard_libexec_prefix);
3601 if (gcc_exec_prefix)
3602 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3606 /* make_relative_prefix requires a program name, but
3607 GCC_EXEC_PREFIX is typically a directory name with a trailing
3608 / (which is ignored by make_relative_prefix), so append a
3610 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL);
3611 gcc_libexec_prefix = get_relative_prefix (tmp_prefix,
3612 standard_exec_prefix,
3613 standard_libexec_prefix);
3615 /* The path is unrelocated, so fallback to the original setting. */
3616 if (!gcc_libexec_prefix)
3617 gcc_libexec_prefix = standard_libexec_prefix;
3623 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3624 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3625 or an automatically created GCC_EXEC_PREFIX from
3626 decoded_options[0].arg. */
3628 /* Do language-specific adjustment/addition of flags. */
3629 lang_specific_driver (&decoded_options, &decoded_options_count,
3632 if (gcc_exec_prefix)
3634 int len = strlen (gcc_exec_prefix);
3636 if (len > (int) sizeof ("/lib/gcc/") - 1
3637 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3639 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3640 if (IS_DIR_SEPARATOR (*temp)
3641 && filename_ncmp (temp + 1, "lib", 3) == 0
3642 && IS_DIR_SEPARATOR (temp[4])
3643 && filename_ncmp (temp + 5, "gcc", 3) == 0)
3644 len -= sizeof ("/lib/gcc/") - 1;
3647 set_std_prefix (gcc_exec_prefix, len);
3648 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3649 PREFIX_PRIORITY_LAST, 0, 0);
3650 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3651 PREFIX_PRIORITY_LAST, 0, 0);
3654 /* COMPILER_PATH and LIBRARY_PATH have values
3655 that are lists of directory names with colons. */
3657 temp = getenv ("COMPILER_PATH");
3660 const char *startp, *endp;
3661 char *nstore = (char *) alloca (strlen (temp) + 3);
3663 startp = endp = temp;
3666 if (*endp == PATH_SEPARATOR || *endp == 0)
3668 strncpy (nstore, startp, endp - startp);
3670 strcpy (nstore, concat (".", dir_separator_str, NULL));
3671 else if (!IS_DIR_SEPARATOR (endp[-1]))
3673 nstore[endp - startp] = DIR_SEPARATOR;
3674 nstore[endp - startp + 1] = 0;
3677 nstore[endp - startp] = 0;
3678 add_prefix (&exec_prefixes, nstore, 0,
3679 PREFIX_PRIORITY_LAST, 0, 0);
3680 add_prefix (&include_prefixes, nstore, 0,
3681 PREFIX_PRIORITY_LAST, 0, 0);
3684 endp = startp = endp + 1;
3691 temp = getenv (LIBRARY_PATH_ENV);
3692 if (temp && *cross_compile == '0')
3694 const char *startp, *endp;
3695 char *nstore = (char *) alloca (strlen (temp) + 3);
3697 startp = endp = temp;
3700 if (*endp == PATH_SEPARATOR || *endp == 0)
3702 strncpy (nstore, startp, endp - startp);
3704 strcpy (nstore, concat (".", dir_separator_str, NULL));
3705 else if (!IS_DIR_SEPARATOR (endp[-1]))
3707 nstore[endp - startp] = DIR_SEPARATOR;
3708 nstore[endp - startp + 1] = 0;
3711 nstore[endp - startp] = 0;
3712 add_prefix (&startfile_prefixes, nstore, NULL,
3713 PREFIX_PRIORITY_LAST, 0, 1);
3716 endp = startp = endp + 1;
3723 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3724 temp = getenv ("LPATH");
3725 if (temp && *cross_compile == '0')
3727 const char *startp, *endp;
3728 char *nstore = (char *) alloca (strlen (temp) + 3);
3730 startp = endp = temp;
3733 if (*endp == PATH_SEPARATOR || *endp == 0)
3735 strncpy (nstore, startp, endp - startp);
3737 strcpy (nstore, concat (".", dir_separator_str, NULL));
3738 else if (!IS_DIR_SEPARATOR (endp[-1]))
3740 nstore[endp - startp] = DIR_SEPARATOR;
3741 nstore[endp - startp + 1] = 0;
3744 nstore[endp - startp] = 0;
3745 add_prefix (&startfile_prefixes, nstore, NULL,
3746 PREFIX_PRIORITY_LAST, 0, 1);
3749 endp = startp = endp + 1;
3756 /* Process the options and store input files and switches in their
3759 last_language_n_infiles = -1;
3761 set_option_handlers (&handlers);
3763 for (j = 1; j < decoded_options_count; j++)
3765 switch (decoded_options[j].opt_index)
3777 for (j = 1; j < decoded_options_count; j++)
3779 if (decoded_options[j].opt_index == OPT_SPECIAL_input_file)
3781 const char *arg = decoded_options[j].arg;
3782 const char *p = strrchr (arg, '@');
3786 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3787 arg = convert_filename (arg, 0, access (arg, F_OK));
3789 /* For LTO static archive support we handle input file
3790 specifications that are composed of a filename and
3791 an offset like FNAME@OFFSET. */
3794 && sscanf (p, "@%li%n", &offset, &consumed) >= 1
3795 && strlen (p) == (unsigned int)consumed)
3797 fname = (char *)xmalloc (p - arg + 1);
3798 memcpy (fname, arg, p - arg);
3799 fname[p - arg] = '\0';
3800 /* Only accept non-stdin and existing FNAME parts, otherwise
3801 try with the full name. */
3802 if (strcmp (fname, "-") == 0 || access (fname, F_OK) < 0)
3805 fname = xstrdup (arg);
3809 fname = xstrdup (arg);
3811 if (strcmp (fname, "-") != 0 && access (fname, F_OK) < 0)
3812 perror_with_name (fname);
3814 add_infile (arg, spec_lang);
3820 read_cmdline_option (&global_options, &global_options_set,
3821 decoded_options + j, UNKNOWN_LOCATION,
3822 CL_DRIVER, &handlers, global_dc);
3825 /* If -save-temps=obj and -o name, create the prefix to use for %b.
3826 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
3827 if (save_temps_flag == SAVE_TEMPS_OBJ && save_temps_prefix != NULL)
3829 save_temps_length = strlen (save_temps_prefix);
3830 temp = strrchr (lbasename (save_temps_prefix), '.');
3833 save_temps_length -= strlen (temp);
3834 save_temps_prefix[save_temps_length] = '\0';
3838 else if (save_temps_prefix != NULL)
3840 free (save_temps_prefix);
3841 save_temps_prefix = NULL;
3844 if (save_temps_flag && use_pipes)
3846 /* -save-temps overrides -pipe, so that temp files are produced */
3847 if (save_temps_flag)
3848 warning (0, "-pipe ignored because -save-temps specified");
3854 const char *gcd = getenv ("GCC_COMPARE_DEBUG");
3856 if (gcd && gcd[0] == '-')
3859 compare_debug_opt = gcd;
3861 else if (gcd && *gcd && strcmp (gcd, "0"))
3864 compare_debug_opt = "-gtoggle";
3867 else if (compare_debug < 0)
3870 gcc_assert (!compare_debug_opt);
3873 /* Set up the search paths. We add directories that we expect to
3874 contain GNU Toolchain components before directories specified by
3875 the machine description so that we will find GNU components (like
3876 the GNU assembler) before those of the host system. */
3878 /* If we don't know where the toolchain has been installed, use the
3879 configured-in locations. */
3880 if (!gcc_exec_prefix)
3883 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
3884 PREFIX_PRIORITY_LAST, 1, 0);
3885 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
3886 PREFIX_PRIORITY_LAST, 2, 0);
3887 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3888 PREFIX_PRIORITY_LAST, 2, 0);
3890 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3891 PREFIX_PRIORITY_LAST, 1, 0);
3894 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix));
3895 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3896 dir_separator_str, NULL);
3898 /* Look for tools relative to the location from which the driver is
3899 running, or, if that is not available, the configured prefix. */
3901 = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
3902 spec_machine, dir_separator_str,
3903 spec_version, dir_separator_str, tooldir_prefix, NULL);
3905 add_prefix (&exec_prefixes,
3906 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3907 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0);
3908 add_prefix (&startfile_prefixes,
3909 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3910 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1);
3912 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
3913 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
3914 then consider it to relocate with the rest of the GCC installation
3915 if GCC_EXEC_PREFIX is set.
3916 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
3917 if (target_system_root && !target_system_root_changed && gcc_exec_prefix)
3919 char *tmp_prefix = get_relative_prefix (decoded_options[0].arg,
3920 standard_bindir_prefix,
3921 target_system_root);
3922 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
3924 target_system_root = tmp_prefix;
3925 target_system_root_changed = 1;
3930 /* More prefixes are enabled in main, after we read the specs file
3931 and determine whether this is cross-compilation or not. */
3933 if (n_infiles == last_language_n_infiles && spec_lang != 0)
3934 warning (0, "%<-x %s%> after last input file has no effect", spec_lang);
3936 if (compare_debug == 2 || compare_debug == 3)
3939 switches[n_switches].part1 = concat ("fcompare-debug=",
3942 switches[n_switches].args = 0;
3943 switches[n_switches].live_cond = 0;
3944 switches[n_switches].validated = 0;
3945 switches[n_switches].ordering = 0;
3950 /* Ensure we only invoke each subprocess once. */
3951 if (print_subprocess_help || print_help_list || print_version)
3955 /* Create a dummy input file, so that we can pass
3956 the help option on to the various sub-processes. */
3957 add_infile ("help-dummy", "c");
3961 switches[n_switches].part1 = 0;
3963 infiles[n_infiles].name = 0;
3966 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
3967 and place that in the environment. */
3970 set_collect_gcc_options (void)
3975 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
3977 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
3978 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
3981 for (i = 0; (int) i < n_switches; i++)
3983 const char *const *args;
3986 obstack_grow (&collect_obstack, " ", 1);
3990 /* Ignore elided switches. */
3991 if ((switches[i].live_cond
3992 & (SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC))
3996 obstack_grow (&collect_obstack, "'-", 2);
3997 q = switches[i].part1;
3998 while ((p = strchr (q, '\'')))
4000 obstack_grow (&collect_obstack, q, p - q);
4001 obstack_grow (&collect_obstack, "'\\''", 4);
4004 obstack_grow (&collect_obstack, q, strlen (q));
4005 obstack_grow (&collect_obstack, "'", 1);
4007 for (args = switches[i].args; args && *args; args++)
4009 obstack_grow (&collect_obstack, " '", 2);
4011 while ((p = strchr (q, '\'')))
4013 obstack_grow (&collect_obstack, q, p - q);
4014 obstack_grow (&collect_obstack, "'\\''", 4);
4017 obstack_grow (&collect_obstack, q, strlen (q));
4018 obstack_grow (&collect_obstack, "'", 1);
4021 obstack_grow (&collect_obstack, "\0", 1);
4022 xputenv (XOBFINISH (&collect_obstack, char *));
4025 /* Process a spec string, accumulating and running commands. */
4027 /* These variables describe the input file name.
4028 input_file_number is the index on outfiles of this file,
4029 so that the output file name can be stored for later use by %o.
4030 input_basename is the start of the part of the input file
4031 sans all directory names, and basename_length is the number
4032 of characters starting there excluding the suffix .c or whatever. */
4034 static const char *gcc_input_filename;
4035 static int input_file_number;
4036 size_t input_filename_length;
4037 static int basename_length;
4038 static int suffixed_basename_length;
4039 static const char *input_basename;
4040 static const char *input_suffix;
4041 #ifndef HOST_LACKS_INODE_NUMBERS
4042 static struct stat input_stat;
4044 static int input_stat_set;
4046 /* The compiler used to process the current input file. */
4047 static struct compiler *input_file_compiler;
4049 /* These are variables used within do_spec and do_spec_1. */
4051 /* Nonzero if an arg has been started and not yet terminated
4052 (with space, tab or newline). */
4053 static int arg_going;
4055 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4056 is a temporary file name. */
4057 static int delete_this_arg;
4059 /* Nonzero means %w has been seen; the next arg to be terminated
4060 is the output file name of this compilation. */
4061 static int this_is_output_file;
4063 /* Nonzero means %s has been seen; the next arg to be terminated
4064 is the name of a library file and we should try the standard
4065 search dirs for it. */
4066 static int this_is_library_file;
4068 /* Nonzero means %T has been seen; the next arg to be terminated
4069 is the name of a linker script and we should try all of the
4070 standard search dirs for it. If it is found insert a --script
4071 command line switch and then substitute the full path in place,
4072 otherwise generate an error message. */
4073 static int this_is_linker_script;
4075 /* Nonzero means that the input of this command is coming from a pipe. */
4076 static int input_from_pipe;
4078 /* Nonnull means substitute this for any suffix when outputting a switches
4080 static const char *suffix_subst;
4082 /* If there is an argument being accumulated, terminate it and store it. */
4085 end_going_arg (void)
4091 obstack_1grow (&obstack, 0);
4092 string = XOBFINISH (&obstack, const char *);
4093 if (this_is_library_file)
4094 string = find_file (string);
4095 if (this_is_linker_script)
4097 char * full_script_path = find_a_file (&startfile_prefixes, string, R_OK, true);
4099 if (full_script_path == NULL)
4101 error ("unable to locate default linker script %qs in the library search paths", string);
4102 /* Script was not found on search path. */
4105 store_arg ("--script", false, false);
4106 string = full_script_path;
4108 store_arg (string, delete_this_arg, this_is_output_file);
4109 if (this_is_output_file)
4110 outfiles[input_file_number] = string;
4116 /* Parse the WRAPPER string which is a comma separated list of the command line
4117 and insert them into the beginning of argbuf. */
4120 insert_wrapper (const char *wrapper)
4124 char *buf = xstrdup (wrapper);
4126 unsigned int old_length = VEC_length (const_char_p, argbuf);
4134 while ((p = strchr (p, ',')) != NULL);
4136 VEC_safe_grow (const_char_p, heap, argbuf, old_length + n);
4137 memmove (VEC_address (const_char_p, argbuf) + n,
4138 VEC_address (const_char_p, argbuf),
4139 old_length * sizeof (const_char_p));
4150 VEC_replace (const_char_p, argbuf, i, p);
4153 while ((p = strchr (p, ',')) != NULL);
4154 gcc_assert (i == n);
4157 /* Process the spec SPEC and run the commands specified therein.
4158 Returns 0 if the spec is successfully processed; -1 if failed. */
4161 do_spec (const char *spec)
4165 value = do_spec_2 (spec);
4167 /* Force out any unfinished command.
4168 If -pipe, this forces out the last command if it ended in `|'. */
4171 if (VEC_length (const_char_p, argbuf) > 0
4172 && !strcmp (VEC_last (const_char_p, argbuf), "|"))
4173 VEC_pop (const_char_p, argbuf);
4175 set_collect_gcc_options ();
4177 if (VEC_length (const_char_p, argbuf) > 0)
4185 do_spec_2 (const char *spec)
4191 delete_this_arg = 0;
4192 this_is_output_file = 0;
4193 this_is_library_file = 0;
4194 this_is_linker_script = 0;
4195 input_from_pipe = 0;
4196 suffix_subst = NULL;
4198 result = do_spec_1 (spec, 0, NULL);
4206 /* Process the given spec string and add any new options to the end
4207 of the switches/n_switches array. */
4210 do_option_spec (const char *name, const char *spec)
4212 unsigned int i, value_count, value_len;
4213 const char *p, *q, *value;
4214 char *tmp_spec, *tmp_spec_p;
4216 if (configure_default_options[0].name == NULL)
4219 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4220 if (strcmp (configure_default_options[i].name, name) == 0)
4222 if (i == ARRAY_SIZE (configure_default_options))
4225 value = configure_default_options[i].value;
4226 value_len = strlen (value);
4228 /* Compute the size of the final spec. */
4231 while ((p = strstr (p, "%(VALUE)")) != NULL)
4237 /* Replace each %(VALUE) by the specified value. */
4238 tmp_spec = (char *) alloca (strlen (spec) + 1
4239 + value_count * (value_len - strlen ("%(VALUE)")));
4240 tmp_spec_p = tmp_spec;
4242 while ((p = strstr (q, "%(VALUE)")) != NULL)
4244 memcpy (tmp_spec_p, q, p - q);
4245 tmp_spec_p = tmp_spec_p + (p - q);
4246 memcpy (tmp_spec_p, value, value_len);
4247 tmp_spec_p += value_len;
4248 q = p + strlen ("%(VALUE)");
4250 strcpy (tmp_spec_p, q);
4252 do_self_spec (tmp_spec);
4255 /* Process the given spec string and add any new options to the end
4256 of the switches/n_switches array. */
4259 do_self_spec (const char *spec)
4264 do_spec_1 (" ", 0, NULL);
4266 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4267 do_self_specs adds the replacements to switches array, so it shouldn't
4268 be processed afterwards. */
4269 for (i = 0; i < n_switches; i++)
4270 if ((switches[i].live_cond & SWITCH_IGNORE))
4271 switches[i].live_cond |= SWITCH_IGNORE_PERMANENTLY;
4273 if (VEC_length (const_char_p, argbuf) > 0)
4275 const char **argbuf_copy;
4276 struct cl_decoded_option *decoded_options;
4277 struct cl_option_handlers handlers;
4278 unsigned int decoded_options_count;
4281 /* Create a copy of argbuf with a dummy argv[0] entry for
4282 decode_cmdline_options_to_array. */
4283 argbuf_copy = XNEWVEC (const char *,
4284 VEC_length (const_char_p, argbuf) + 1);
4285 argbuf_copy[0] = "";
4286 memcpy (argbuf_copy + 1, VEC_address (const_char_p, argbuf),
4287 VEC_length (const_char_p, argbuf) * sizeof (const char *));
4289 decode_cmdline_options_to_array (VEC_length (const_char_p, argbuf) + 1,
4291 CL_DRIVER, &decoded_options,
4292 &decoded_options_count);
4294 set_option_handlers (&handlers);
4296 for (j = 1; j < decoded_options_count; j++)
4298 switch (decoded_options[j].opt_index)
4300 case OPT_SPECIAL_input_file:
4301 /* Specs should only generate options, not input
4303 if (strcmp (decoded_options[j].arg, "-") != 0)
4304 fatal_error ("switch %qs does not start with %<-%>",
4305 decoded_options[j].arg);
4307 fatal_error ("spec-generated switch is just %<-%>");
4310 case OPT_fcompare_debug_second:
4311 case OPT_fcompare_debug:
4312 case OPT_fcompare_debug_:
4314 /* Avoid duplicate processing of some options from
4315 compare-debug specs; just save them here. */
4316 save_switch (decoded_options[j].canonical_option[0],
4317 (decoded_options[j].canonical_option_num_elements
4319 &decoded_options[j].canonical_option[1], false);
4323 read_cmdline_option (&global_options, &global_options_set,
4324 decoded_options + j, UNKNOWN_LOCATION,
4325 CL_DRIVER, &handlers, global_dc);
4331 switches[n_switches].part1 = 0;
4335 /* Callback for processing %D and %I specs. */
4337 struct spec_path_info {
4342 bool separate_options;
4346 spec_path (char *path, void *data)
4348 struct spec_path_info *info = (struct spec_path_info *) data;
4352 if (info->omit_relative && !IS_ABSOLUTE_PATH (path))
4355 if (info->append_len != 0)
4357 len = strlen (path);
4358 memcpy (path + len, info->append, info->append_len + 1);
4361 if (!is_directory (path, true))
4364 do_spec_1 (info->option, 1, NULL);
4365 if (info->separate_options)
4366 do_spec_1 (" ", 0, NULL);
4368 if (info->append_len == 0)
4370 len = strlen (path);
4371 save = path[len - 1];
4372 if (IS_DIR_SEPARATOR (path[len - 1]))
4373 path[len - 1] = '\0';
4376 do_spec_1 (path, 1, NULL);
4377 do_spec_1 (" ", 0, NULL);
4379 /* Must not damage the original path. */
4380 if (info->append_len == 0)
4381 path[len - 1] = save;
4386 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4390 create_at_file (char **argv)
4392 char *temp_file = make_temp_file ("");
4393 char *at_argument = concat ("@", temp_file, NULL);
4394 FILE *f = fopen (temp_file, "w");
4398 fatal_error ("could not open temporary response file %s",
4401 status = writeargv (argv, f);
4404 fatal_error ("could not write to temporary response file %s",
4407 status = fclose (f);
4410 fatal_error ("could not close temporary response file %s",
4413 store_arg (at_argument, 0, 0);
4415 record_temp_file (temp_file, !save_temps_flag, !save_temps_flag);
4418 /* True if we should compile INFILE. */
4421 compile_input_file_p (struct infile *infile)
4423 if ((!infile->language) || (infile->language[0] != '*'))
4424 if (infile->incompiler == input_file_compiler)
4429 /* Process each member of VEC as a spec. */
4432 do_specs_vec (VEC(char_p,heap) *vec)
4437 FOR_EACH_VEC_ELT (char_p, vec, ix, opt)
4439 do_spec_1 (opt, 1, NULL);
4440 /* Make each accumulated option a separate argument. */
4441 do_spec_1 (" ", 0, NULL);
4445 /* Process the sub-spec SPEC as a portion of a larger spec.
4446 This is like processing a whole spec except that we do
4447 not initialize at the beginning and we do not supply a
4448 newline by default at the end.
4449 INSWITCH nonzero means don't process %-sequences in SPEC;
4450 in this case, % is treated as an ordinary character.
4451 This is used while substituting switches.
4452 INSWITCH nonzero also causes SPC not to terminate an argument.
4454 Value is zero unless a line was finished
4455 and the command on that line reported an error. */
4458 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4460 const char *p = spec;
4465 /* If it's an empty string argument to a switch, keep it as is. */
4466 if (inswitch && !*p)
4470 /* If substituting a switch, treat all chars like letters.
4471 Otherwise, NL, SPC, TAB and % are special. */
4472 switch (inswitch ? 'a' : c)
4477 if (VEC_length (const_char_p, argbuf) > 0
4478 && !strcmp (VEC_last (const_char_p, argbuf), "|"))
4480 /* A `|' before the newline means use a pipe here,
4481 but only if -pipe was specified.
4482 Otherwise, execute now and don't pass the `|' as an arg. */
4485 input_from_pipe = 1;
4489 VEC_pop (const_char_p, argbuf);
4492 set_collect_gcc_options ();
4494 if (VEC_length (const_char_p, argbuf) > 0)
4500 /* Reinitialize for a new command, and for a new argument. */
4503 delete_this_arg = 0;
4504 this_is_output_file = 0;
4505 this_is_library_file = 0;
4506 this_is_linker_script = 0;
4507 input_from_pipe = 0;
4514 obstack_1grow (&obstack, c);
4522 /* Reinitialize for a new argument. */
4523 delete_this_arg = 0;
4524 this_is_output_file = 0;
4525 this_is_library_file = 0;
4526 this_is_linker_script = 0;
4533 fatal_error ("spec %qs invalid", spec);
4536 if (save_temps_length)
4537 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4539 obstack_grow (&obstack, input_basename, basename_length);
4540 if (compare_debug < 0)
4541 obstack_grow (&obstack, ".gk", 3);
4546 if (save_temps_length)
4547 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4549 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4550 if (compare_debug < 0)
4551 obstack_grow (&obstack, ".gk", 3);
4556 delete_this_arg = 2;
4559 /* Dump out the directories specified with LIBRARY_PATH,
4560 followed by the absolute directories
4561 that we search for startfiles. */
4564 struct spec_path_info info;
4567 info.append_len = 0;
4568 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4569 /* Used on systems which record the specified -L dirs
4570 and use them to search for dynamic linking.
4571 Relative directories always come from -B,
4572 and it is better not to use them for searching
4573 at run time. In particular, stage1 loses. */
4574 info.omit_relative = true;
4576 info.omit_relative = false;
4578 info.separate_options = false;
4580 for_each_path (&startfile_prefixes, true, 0, spec_path, &info);
4585 /* %efoo means report an error with `foo' as error message
4586 and don't execute any more commands for this file. */
4590 while (*p != 0 && *p != '\n')
4592 buf = (char *) alloca (p - q + 1);
4593 strncpy (buf, q, p - q);
4595 error ("%s", _(buf));
4600 /* %nfoo means report a notice with `foo' on stderr. */
4604 while (*p != 0 && *p != '\n')
4606 buf = (char *) alloca (p - q + 1);
4607 strncpy (buf, q, p - q);
4609 inform (0, "%s", _(buf));
4619 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4620 defined, and it is not a directory, and it is
4621 writable, use it. Otherwise, treat this like any
4622 other temporary file. */
4624 if ((!save_temps_flag)
4625 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4626 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4628 obstack_grow (&obstack, HOST_BIT_BUCKET,
4629 strlen (HOST_BIT_BUCKET));
4630 delete_this_arg = 0;
4635 goto create_temp_file;
4639 obstack_1grow (&obstack, '-');
4640 delete_this_arg = 0;
4643 /* consume suffix */
4644 while (*p == '.' || ISALNUM ((unsigned char) *p))
4646 if (p[0] == '%' && p[1] == 'O')
4651 goto create_temp_file;
4655 /* consume suffix */
4656 while (*p == '.' || ISALNUM ((unsigned char) *p))
4658 if (p[0] == '%' && p[1] == 'O')
4663 goto create_temp_file;
4669 struct temp_name *t;
4671 const char *suffix = p;
4672 char *saved_suffix = NULL;
4674 while (*p == '.' || ISALNUM ((unsigned char) *p))
4676 suffix_length = p - suffix;
4677 if (p[0] == '%' && p[1] == 'O')
4680 /* We don't support extra suffix characters after %O. */
4681 if (*p == '.' || ISALNUM ((unsigned char) *p))
4682 fatal_error ("spec %qs has invalid %<%%0%c%>", spec, *p);
4683 if (suffix_length == 0)
4684 suffix = TARGET_OBJECT_SUFFIX;
4688 = XNEWVEC (char, suffix_length
4689 + strlen (TARGET_OBJECT_SUFFIX));
4690 strncpy (saved_suffix, suffix, suffix_length);
4691 strcpy (saved_suffix + suffix_length,
4692 TARGET_OBJECT_SUFFIX);
4694 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4697 if (compare_debug < 0)
4699 suffix = concat (".gk", suffix, NULL);
4703 /* If -save-temps=obj and -o were specified, use that for the
4705 if (save_temps_length)
4708 temp_filename_length
4709 = save_temps_length + suffix_length + 1;
4710 tmp = (char *) alloca (temp_filename_length);
4711 memcpy (tmp, save_temps_prefix, save_temps_length);
4712 memcpy (tmp + save_temps_length, suffix, suffix_length);
4713 tmp[save_temps_length + suffix_length] = '\0';
4714 temp_filename = save_string (tmp,
4715 temp_filename_length + 1);
4716 obstack_grow (&obstack, temp_filename,
4717 temp_filename_length);
4719 delete_this_arg = 0;
4723 /* If the gcc_input_filename has the same suffix specified
4724 for the %g, %u, or %U, and -save-temps is specified,
4725 we could end up using that file as an intermediate
4726 thus clobbering the user's source file (.e.g.,
4727 gcc -save-temps foo.s would clobber foo.s with the
4728 output of cpp0). So check for this condition and
4729 generate a temp file as the intermediate. */
4731 if (save_temps_flag)
4734 temp_filename_length = basename_length + suffix_length + 1;
4735 tmp = (char *) alloca (temp_filename_length);
4736 memcpy (tmp, input_basename, basename_length);
4737 memcpy (tmp + basename_length, suffix, suffix_length);
4738 tmp[basename_length + suffix_length] = '\0';
4739 temp_filename = tmp;
4741 if (filename_cmp (temp_filename, gcc_input_filename) != 0)
4743 #ifndef HOST_LACKS_INODE_NUMBERS
4744 struct stat st_temp;
4746 /* Note, set_input() resets input_stat_set to 0. */
4747 if (input_stat_set == 0)
4749 input_stat_set = stat (gcc_input_filename,
4751 if (input_stat_set >= 0)
4755 /* If we have the stat for the gcc_input_filename
4756 and we can do the stat for the temp_filename
4757 then the they could still refer to the same
4758 file if st_dev/st_ino's are the same. */
4759 if (input_stat_set != 1
4760 || stat (temp_filename, &st_temp) < 0
4761 || input_stat.st_dev != st_temp.st_dev
4762 || input_stat.st_ino != st_temp.st_ino)
4764 /* Just compare canonical pathnames. */
4765 char* input_realname = lrealpath (gcc_input_filename);
4766 char* temp_realname = lrealpath (temp_filename);
4767 bool files_differ = filename_cmp (input_realname, temp_realname);
4768 free (input_realname);
4769 free (temp_realname);
4773 temp_filename = save_string (temp_filename,
4774 temp_filename_length + 1);
4775 obstack_grow (&obstack, temp_filename,
4776 temp_filename_length);
4778 delete_this_arg = 0;
4784 /* See if we already have an association of %g/%u/%U and
4786 for (t = temp_names; t; t = t->next)
4787 if (t->length == suffix_length
4788 && strncmp (t->suffix, suffix, suffix_length) == 0
4789 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
4792 /* Make a new association if needed. %u and %j
4794 if (t == 0 || c == 'u' || c == 'j')
4798 t = XNEW (struct temp_name);
4799 t->next = temp_names;
4802 t->length = suffix_length;
4805 t->suffix = saved_suffix;
4806 saved_suffix = NULL;
4809 t->suffix = save_string (suffix, suffix_length);
4810 t->unique = (c == 'u' || c == 'U' || c == 'j');
4811 temp_filename = make_temp_file (t->suffix);
4812 temp_filename_length = strlen (temp_filename);
4813 t->filename = temp_filename;
4814 t->filename_length = temp_filename_length;
4817 free (saved_suffix);
4819 obstack_grow (&obstack, t->filename, t->filename_length);
4820 delete_this_arg = 1;
4828 if (at_file_supplied)
4830 /* We are going to expand `%i' to `@FILE', where FILE
4831 is a newly-created temporary filename. The filenames
4832 that would usually be expanded in place of %o will be
4833 written to the temporary file. */
4838 for (i = 0; i < n_infiles; i++)
4839 if (compile_input_file_p (&infiles[i]))
4842 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
4844 /* Copy the strings over. */
4845 for (i = 0, j = 0; i < n_infiles; i++)
4846 if (compile_input_file_p (&infiles[i]))
4848 argv[j] = CONST_CAST (char *, infiles[i].name);
4849 infiles[i].compiled = true;
4854 create_at_file (argv);
4857 for (i = 0; (int) i < n_infiles; i++)
4858 if (compile_input_file_p (&infiles[i]))
4860 store_arg (infiles[i].name, 0, 0);
4861 infiles[i].compiled = true;
4866 obstack_grow (&obstack, gcc_input_filename,
4867 input_filename_length);
4874 struct spec_path_info info;
4878 do_spec_1 ("-imultilib", 1, NULL);
4879 /* Make this a separate argument. */
4880 do_spec_1 (" ", 0, NULL);
4881 do_spec_1 (multilib_dir, 1, NULL);
4882 do_spec_1 (" ", 0, NULL);
4885 if (gcc_exec_prefix)
4887 do_spec_1 ("-iprefix", 1, NULL);
4888 /* Make this a separate argument. */
4889 do_spec_1 (" ", 0, NULL);
4890 do_spec_1 (gcc_exec_prefix, 1, NULL);
4891 do_spec_1 (" ", 0, NULL);
4894 if (target_system_root_changed ||
4895 (target_system_root && target_sysroot_hdrs_suffix))
4897 do_spec_1 ("-isysroot", 1, NULL);
4898 /* Make this a separate argument. */
4899 do_spec_1 (" ", 0, NULL);
4900 do_spec_1 (target_system_root, 1, NULL);
4901 if (target_sysroot_hdrs_suffix)
4902 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
4903 do_spec_1 (" ", 0, NULL);
4906 info.option = "-isystem";
4907 info.append = "include";
4908 info.append_len = strlen (info.append);
4909 info.omit_relative = false;
4910 info.separate_options = true;
4912 for_each_path (&include_prefixes, false, info.append_len,
4915 info.append = "include-fixed";
4916 if (*sysroot_hdrs_suffix_spec)
4917 info.append = concat (info.append, dir_separator_str,
4918 multilib_dir, NULL);
4919 info.append_len = strlen (info.append);
4920 for_each_path (&include_prefixes, false, info.append_len,
4927 int max = n_infiles;
4928 max += lang_specific_extra_outfiles;
4930 if (HAVE_GNU_LD && at_file_supplied)
4932 /* We are going to expand `%o' to `@FILE', where FILE
4933 is a newly-created temporary filename. The filenames
4934 that would usually be expanded in place of %o will be
4935 written to the temporary file. */
4940 /* Convert OUTFILES into a form suitable for writeargv. */
4942 /* Determine how many are non-NULL. */
4943 for (n_files = 0, i = 0; i < max; i++)
4944 n_files += outfiles[i] != NULL;
4946 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
4948 /* Copy the strings over. */
4949 for (i = 0, j = 0; i < max; i++)
4952 argv[j] = CONST_CAST (char *, outfiles[i]);
4957 create_at_file (argv);
4960 for (i = 0; i < max; i++)
4962 store_arg (outfiles[i], 0, 0);
4967 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4972 this_is_library_file = 1;
4976 this_is_linker_script = 1;
4980 outfiles[input_file_number] = NULL;
4984 this_is_output_file = 1;
4989 unsigned int cur_index = VEC_length (const_char_p, argbuf);
4990 /* Handle the {...} following the %W. */
4992 fatal_error ("spec %qs has invalid %<%%W%c%>", spec, *p);
4993 p = handle_braces (p + 1);
4997 /* If any args were output, mark the last one for deletion
4999 if (VEC_length (const_char_p, argbuf) != cur_index)
5000 record_temp_file (VEC_last (const_char_p, argbuf), 0, 1);
5004 /* %x{OPTION} records OPTION for %X to output. */
5012 /* Skip past the option value and make a copy. */
5014 fatal_error ("spec %qs has invalid %<%%x%c%>", spec, *p);
5017 string = save_string (p1 + 1, p - p1 - 2);
5019 /* See if we already recorded this option. */
5020 FOR_EACH_VEC_ELT (char_p, linker_options, ix, opt)
5021 if (! strcmp (string, opt))
5027 /* This option is new; add it. */
5028 add_linker_option (string, strlen (string));
5032 /* Dump out the options accumulated previously using %x. */
5034 do_specs_vec (linker_options);
5037 /* Dump out the options accumulated previously using -Wa,. */
5039 do_specs_vec (assembler_options);
5042 /* Dump out the options accumulated previously using -Wp,. */
5044 do_specs_vec (preprocessor_options);
5047 /* Here are digits and numbers that just process
5048 a certain constant string as a spec. */
5051 value = do_spec_1 (cc1_spec, 0, NULL);
5057 value = do_spec_1 (cc1plus_spec, 0, NULL);
5063 value = do_spec_1 (asm_spec, 0, NULL);
5069 value = do_spec_1 (asm_final_spec, 0, NULL);
5076 const char *const spec
5077 = (input_file_compiler->cpp_spec
5078 ? input_file_compiler->cpp_spec
5080 value = do_spec_1 (spec, 0, NULL);
5087 value = do_spec_1 (endfile_spec, 0, NULL);
5093 value = do_spec_1 (link_spec, 0, NULL);
5099 value = do_spec_1 (lib_spec, 0, NULL);
5105 value = do_spec_1 (libgcc_spec, 0, NULL);
5111 /* We assume there is a directory
5112 separator at the end of this string. */
5113 if (target_system_root)
5115 obstack_grow (&obstack, target_system_root,
5116 strlen (target_system_root));
5117 if (target_sysroot_suffix)
5118 obstack_grow (&obstack, target_sysroot_suffix,
5119 strlen (target_sysroot_suffix));
5124 value = do_spec_1 (startfile_spec, 0, NULL);
5129 /* Here we define characters other than letters and digits. */
5132 p = handle_braces (p);
5138 p = handle_spec_function (p);
5144 obstack_1grow (&obstack, '%');
5151 while (p[len] && p[len] != ' ' && p[len] != '%')
5153 suffix_subst = save_string (p - 1, len + 1);
5158 /* Henceforth ignore the option(s) matching the pattern
5164 int have_wildcard = 0;
5169 switch_option = SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC;
5171 switch_option = SWITCH_IGNORE;
5173 while (p[len] && p[len] != ' ' && p[len] != '\t')
5176 if (p[len-1] == '*')
5179 for (i = 0; i < n_switches; i++)
5180 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5181 && (have_wildcard || switches[i].part1[len] == '\0'))
5183 switches[i].live_cond |= switch_option;
5184 switches[i].validated = 1;
5192 if (soft_matched_part)
5194 if (soft_matched_part[0])
5195 do_spec_1 (soft_matched_part, 1, NULL);
5196 do_spec_1 (" ", 0, NULL);
5199 /* Catch the case where a spec string contains something like
5200 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5201 hand side of the :. */
5202 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5205 /* Process a string found as the value of a spec given by name.
5206 This feature allows individual machine descriptions
5207 to add and use their own specs. */
5210 const char *name = p;
5211 struct spec_list *sl;
5214 /* The string after the S/P is the name of a spec that is to be
5216 while (*p && *p != ')')
5219 /* See if it's in the list. */
5220 for (len = p - name, sl = specs; sl; sl = sl->next)
5221 if (sl->name_len == len && !strncmp (sl->name, name, len))
5223 name = *(sl->ptr_spec);
5225 fnotice (stderr, "Processing spec (%s), which is '%s'\n",
5233 value = do_spec_1 (name, 0, NULL);
5238 /* Discard the closing paren. */
5245 error ("spec failure: unrecognized spec option %qc", c);
5251 /* Backslash: treat next character as ordinary. */
5256 /* Ordinary character: put it into the current argument. */
5257 obstack_1grow (&obstack, c);
5261 /* End of string. If we are processing a spec function, we need to
5262 end any pending argument. */
5263 if (processing_spec_function)
5269 /* Look up a spec function. */
5271 static const struct spec_function *
5272 lookup_spec_function (const char *name)
5274 const struct spec_function *sf;
5276 for (sf = static_spec_functions; sf->name != NULL; sf++)
5277 if (strcmp (sf->name, name) == 0)
5283 /* Evaluate a spec function. */
5286 eval_spec_function (const char *func, const char *args)
5288 const struct spec_function *sf;
5289 const char *funcval;
5291 /* Saved spec processing context. */
5292 VEC(const_char_p,heap) *save_argbuf;
5295 int save_delete_this_arg;
5296 int save_this_is_output_file;
5297 int save_this_is_library_file;
5298 int save_input_from_pipe;
5299 int save_this_is_linker_script;
5300 const char *save_suffix_subst;
5303 sf = lookup_spec_function (func);
5305 fatal_error ("unknown spec function %qs", func);
5307 /* Push the spec processing context. */
5308 save_argbuf = argbuf;
5310 save_arg_going = arg_going;
5311 save_delete_this_arg = delete_this_arg;
5312 save_this_is_output_file = this_is_output_file;
5313 save_this_is_library_file = this_is_library_file;
5314 save_this_is_linker_script = this_is_linker_script;
5315 save_input_from_pipe = input_from_pipe;
5316 save_suffix_subst = suffix_subst;
5318 /* Create a new spec processing context, and build the function
5322 if (do_spec_2 (args) < 0)
5323 fatal_error ("error in args to spec function %qs", func);
5325 /* argbuf_index is an index for the next argument to be inserted, and
5326 so contains the count of the args already inserted. */
5328 funcval = (*sf->func) (VEC_length (const_char_p, argbuf),
5329 VEC_address (const_char_p, argbuf));
5331 /* Pop the spec processing context. */
5332 VEC_free (const_char_p, heap, argbuf);
5333 argbuf = save_argbuf;
5335 arg_going = save_arg_going;
5336 delete_this_arg = save_delete_this_arg;
5337 this_is_output_file = save_this_is_output_file;
5338 this_is_library_file = save_this_is_library_file;
5339 this_is_linker_script = save_this_is_linker_script;
5340 input_from_pipe = save_input_from_pipe;
5341 suffix_subst = save_suffix_subst;
5346 /* Handle a spec function call of the form:
5350 ARGS is processed as a spec in a separate context and split into an
5351 argument vector in the normal fashion. The function returns a string
5352 containing a spec which we then process in the caller's context, or
5353 NULL if no processing is required. */
5356 handle_spec_function (const char *p)
5359 const char *endp, *funcval;
5362 processing_spec_function++;
5364 /* Get the function name. */
5365 for (endp = p; *endp != '\0'; endp++)
5367 if (*endp == '(') /* ) */
5369 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5370 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5371 fatal_error ("malformed spec function name");
5373 if (*endp != '(') /* ) */
5374 fatal_error ("no arguments for spec function");
5375 func = save_string (p, endp - p);
5378 /* Get the arguments. */
5379 for (count = 0; *endp != '\0'; endp++)
5388 else if (*endp == '(') /* ) */
5393 fatal_error ("malformed spec function arguments");
5394 args = save_string (p, endp - p);
5397 /* p now points to just past the end of the spec function expression. */
5399 funcval = eval_spec_function (func, args);
5400 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5406 processing_spec_function--;
5411 /* Inline subroutine of handle_braces. Returns true if the current
5412 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5414 input_suffix_matches (const char *atom, const char *end_atom)
5416 return (input_suffix
5417 && !strncmp (input_suffix, atom, end_atom - atom)
5418 && input_suffix[end_atom - atom] == '\0');
5421 /* Subroutine of handle_braces. Returns true if the current
5422 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5424 input_spec_matches (const char *atom, const char *end_atom)
5426 return (input_file_compiler
5427 && input_file_compiler->suffix
5428 && input_file_compiler->suffix[0] != '\0'
5429 && !strncmp (input_file_compiler->suffix + 1, atom,
5431 && input_file_compiler->suffix[end_atom - atom + 1] == '\0');
5434 /* Subroutine of handle_braces. Returns true if a switch
5435 matching the atom bracketed by ATOM and END_ATOM appeared on the
5438 switch_matches (const char *atom, const char *end_atom, int starred)
5441 int len = end_atom - atom;
5442 int plen = starred ? len : -1;
5444 for (i = 0; i < n_switches; i++)
5445 if (!strncmp (switches[i].part1, atom, len)
5446 && (starred || switches[i].part1[len] == '\0')
5447 && check_live_switch (i, plen))
5453 /* Inline subroutine of handle_braces. Mark all of the switches which
5454 match ATOM (extends to END_ATOM; STARRED indicates whether there
5455 was a star after the atom) for later processing. */
5457 mark_matching_switches (const char *atom, const char *end_atom, int starred)
5460 int len = end_atom - atom;
5461 int plen = starred ? len : -1;
5463 for (i = 0; i < n_switches; i++)
5464 if (!strncmp (switches[i].part1, atom, len)
5465 && (starred || switches[i].part1[len] == '\0')
5466 && check_live_switch (i, plen))
5467 switches[i].ordering = 1;
5470 /* Inline subroutine of handle_braces. Process all the currently
5471 marked switches through give_switch, and clear the marks. */
5473 process_marked_switches (void)
5477 for (i = 0; i < n_switches; i++)
5478 if (switches[i].ordering == 1)
5480 switches[i].ordering = 0;
5485 /* Handle a %{ ... } construct. P points just inside the leading {.
5486 Returns a pointer one past the end of the brace block, or 0
5487 if we call do_spec_1 and that returns -1. */
5490 handle_braces (const char *p)
5492 const char *atom, *end_atom;
5493 const char *d_atom = NULL, *d_end_atom = NULL;
5494 const char *orig = p;
5502 bool a_must_be_last = false;
5503 bool ordered_set = false;
5504 bool disjunct_set = false;
5505 bool disj_matched = false;
5506 bool disj_starred = true;
5507 bool n_way_choice = false;
5508 bool n_way_matched = false;
5510 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5517 /* Scan one "atom" (S in the description above of %{}, possibly
5518 with '!', '.', '@', ',', or '*' modifiers). */
5520 a_is_suffix = false;
5521 a_is_starred = false;
5522 a_is_negated = false;
5523 a_is_spectype = false;
5527 p++, a_is_negated = true;
5531 p++, a_is_suffix = true;
5533 p++, a_is_spectype = true;
5536 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5537 || *p == ',' || *p == '.' || *p == '@')
5542 p++, a_is_starred = 1;
5548 /* Substitute the switch(es) indicated by the current atom. */
5550 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5551 || a_is_spectype || atom == end_atom)
5554 mark_matching_switches (atom, end_atom, a_is_starred);
5557 process_marked_switches ();
5561 /* Substitute some text if the current atom appears as a switch
5563 disjunct_set = true;
5567 if (atom == end_atom)
5569 if (!n_way_choice || disj_matched || *p == '|'
5570 || a_is_negated || a_is_suffix || a_is_spectype
5574 /* An empty term may appear as the last choice of an
5575 N-way choice set; it means "otherwise". */
5576 a_must_be_last = true;
5577 disj_matched = !n_way_matched;
5578 disj_starred = false;
5582 if ((a_is_suffix || a_is_spectype) && a_is_starred)
5586 disj_starred = false;
5588 /* Don't bother testing this atom if we already have a
5590 if (!disj_matched && !n_way_matched)
5593 a_matched = input_suffix_matches (atom, end_atom);
5594 else if (a_is_spectype)
5595 a_matched = input_spec_matches (atom, end_atom);
5597 a_matched = switch_matches (atom, end_atom, a_is_starred);
5599 if (a_matched != a_is_negated)
5601 disj_matched = true;
5603 d_end_atom = end_atom;
5610 /* Found the body, that is, the text to substitute if the
5611 current disjunction matches. */
5612 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5613 disj_matched && !n_way_matched);
5617 /* If we have an N-way choice, reset state for the next
5621 n_way_choice = true;
5622 n_way_matched |= disj_matched;
5623 disj_matched = false;
5624 disj_starred = true;
5625 d_atom = d_end_atom = NULL;
5634 while (*p++ != '}');
5639 fatal_error ("braced spec %qs is invalid at %qc", orig, *p);
5644 /* Subroutine of handle_braces. Scan and process a brace substitution body
5645 (X in the description of %{} syntax). P points one past the colon;
5646 ATOM and END_ATOM bracket the first atom which was found to be true
5647 (present) in the current disjunction; STARRED indicates whether all
5648 the atoms in the current disjunction were starred (for syntax validation);
5649 MATCHED indicates whether the disjunction matched or not, and therefore
5650 whether or not the body is to be processed through do_spec_1 or just
5651 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5655 process_brace_body (const char *p, const char *atom, const char *end_atom,
5656 int starred, int matched)
5658 const char *body, *end_body;
5659 unsigned int nesting_level;
5660 bool have_subst = false;
5662 /* Locate the closing } or ;, honoring nested braces.
5663 Trim trailing whitespace. */
5672 if (!--nesting_level)
5675 else if (*p == ';' && nesting_level == 1)
5677 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
5679 else if (*p == '\0')
5685 while (end_body[-1] == ' ' || end_body[-1] == '\t')
5688 if (have_subst && !starred)
5693 /* Copy the substitution body to permanent storage and execute it.
5694 If have_subst is false, this is a simple matter of running the
5695 body through do_spec_1... */
5696 char *string = save_string (body, end_body - body);
5699 if (do_spec_1 (string, 0, NULL) < 0)
5704 /* ... but if have_subst is true, we have to process the
5705 body once for each matching switch, with %* set to the
5706 variant part of the switch. */
5707 unsigned int hard_match_len = end_atom - atom;
5710 for (i = 0; i < n_switches; i++)
5711 if (!strncmp (switches[i].part1, atom, hard_match_len)
5712 && check_live_switch (i, hard_match_len))
5714 if (do_spec_1 (string, 0,
5715 &switches[i].part1[hard_match_len]) < 0)
5717 /* Pass any arguments this switch has. */
5719 suffix_subst = NULL;
5727 fatal_error ("braced spec body %qs is invalid", body);
5730 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5731 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5732 spec, or -1 if either exact match or %* is used.
5734 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5735 whose value does not begin with "no-" is obsoleted by the same value
5736 with the "no-", similarly for a switch with the "no-" prefix. */
5739 check_live_switch (int switchnum, int prefix_length)
5741 const char *name = switches[switchnum].part1;
5744 /* If we already processed this switch and determined if it was
5745 live or not, return our past determination. */
5746 if (switches[switchnum].live_cond != 0)
5747 return ((switches[switchnum].live_cond & SWITCH_LIVE) != 0
5748 && (switches[switchnum].live_cond & SWITCH_FALSE) == 0
5749 && (switches[switchnum].live_cond & SWITCH_IGNORE_PERMANENTLY)
5752 /* In the common case of {<at-most-one-letter>*}, a negating
5753 switch would always match, so ignore that case. We will just
5754 send the conflicting switches to the compiler phase. */
5755 if (prefix_length >= 0 && prefix_length <= 1)
5758 /* Now search for duplicate in a manner that depends on the name. */
5762 for (i = switchnum + 1; i < n_switches; i++)
5763 if (switches[i].part1[0] == 'O')
5765 switches[switchnum].validated = 1;
5766 switches[switchnum].live_cond = SWITCH_FALSE;
5771 case 'W': case 'f': case 'm':
5772 if (! strncmp (name + 1, "no-", 3))
5774 /* We have Xno-YYY, search for XYYY. */
5775 for (i = switchnum + 1; i < n_switches; i++)
5776 if (switches[i].part1[0] == name[0]
5777 && ! strcmp (&switches[i].part1[1], &name[4]))
5779 switches[switchnum].validated = 1;
5780 switches[switchnum].live_cond = SWITCH_FALSE;
5786 /* We have XYYY, search for Xno-YYY. */
5787 for (i = switchnum + 1; i < n_switches; i++)
5788 if (switches[i].part1[0] == name[0]
5789 && switches[i].part1[1] == 'n'
5790 && switches[i].part1[2] == 'o'
5791 && switches[i].part1[3] == '-'
5792 && !strcmp (&switches[i].part1[4], &name[1]))
5794 switches[switchnum].validated = 1;
5795 switches[switchnum].live_cond = SWITCH_FALSE;
5802 /* Otherwise the switch is live. */
5803 switches[switchnum].live_cond |= SWITCH_LIVE;
5807 /* Pass a switch to the current accumulating command
5808 in the same form that we received it.
5809 SWITCHNUM identifies the switch; it is an index into
5810 the vector of switches gcc received, which is `switches'.
5811 This cannot fail since it never finishes a command line.
5813 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5816 give_switch (int switchnum, int omit_first_word)
5818 if ((switches[switchnum].live_cond & SWITCH_IGNORE) != 0)
5821 if (!omit_first_word)
5823 do_spec_1 ("-", 0, NULL);
5824 do_spec_1 (switches[switchnum].part1, 1, NULL);
5827 if (switches[switchnum].args != 0)
5830 for (p = switches[switchnum].args; *p; p++)
5832 const char *arg = *p;
5834 do_spec_1 (" ", 0, NULL);
5837 unsigned length = strlen (arg);
5840 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5841 if (arg[length] == '.')
5843 (CONST_CAST(char *, arg))[length] = 0;
5847 do_spec_1 (arg, 1, NULL);
5849 (CONST_CAST(char *, arg))[length] = '.';
5850 do_spec_1 (suffix_subst, 1, NULL);
5853 do_spec_1 (arg, 1, NULL);
5857 do_spec_1 (" ", 0, NULL);
5858 switches[switchnum].validated = 1;
5861 /* Search for a file named NAME trying various prefixes including the
5862 user's -B prefix and some standard ones.
5863 Return the absolute file name found. If nothing is found, return NAME. */
5866 find_file (const char *name)
5868 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true);
5869 return newname ? newname : name;
5872 /* Determine whether a directory exists. If LINKER, return 0 for
5873 certain fixed names not needed by the linker. */
5876 is_directory (const char *path1, bool linker)
5883 /* Ensure the string ends with "/.". The resulting path will be a
5884 directory even if the given path is a symbolic link. */
5885 len1 = strlen (path1);
5886 path = (char *) alloca (3 + len1);
5887 memcpy (path, path1, len1);
5889 if (!IS_DIR_SEPARATOR (cp[-1]))
5890 *cp++ = DIR_SEPARATOR;
5894 /* Exclude directories that the linker is known to search. */
5896 && IS_DIR_SEPARATOR (path[0])
5898 && filename_ncmp (path + 1, "lib", 3) == 0)
5900 && filename_ncmp (path + 1, "usr", 3) == 0
5901 && IS_DIR_SEPARATOR (path[4])
5902 && filename_ncmp (path + 5, "lib", 3) == 0)))
5905 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5908 /* Set up the various global variables to indicate that we're processing
5909 the input file named FILENAME. */
5912 set_input (const char *filename)
5916 gcc_input_filename = filename;
5917 input_filename_length = strlen (gcc_input_filename);
5918 input_basename = lbasename (gcc_input_filename);
5920 /* Find a suffix starting with the last period,
5921 and set basename_length to exclude that suffix. */
5922 basename_length = strlen (input_basename);
5923 suffixed_basename_length = basename_length;
5924 p = input_basename + basename_length;
5925 while (p != input_basename && *p != '.')
5927 if (*p == '.' && p != input_basename)
5929 basename_length = p - input_basename;
5930 input_suffix = p + 1;
5935 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5936 we will need to do a stat on the gcc_input_filename. The
5937 INPUT_STAT_SET signals that the stat is needed. */
5941 /* On fatal signals, delete all the temporary files. */
5944 fatal_signal (int signum)
5946 signal (signum, SIG_DFL);
5947 delete_failure_queue ();
5948 delete_temp_files ();
5949 /* Get the same signal again, this time not handled,
5950 so its normal effect occurs. */
5951 kill (getpid (), signum);
5954 /* Compare the contents of the two files named CMPFILE[0] and
5955 CMPFILE[1]. Return zero if they're identical, nonzero
5959 compare_files (char *cmpfile[])
5962 FILE *temp[2] = { NULL, NULL };
5968 void *map[2] = { NULL, NULL };
5970 for (i = 0; i < 2; i++)
5974 if (stat (cmpfile[i], &st) < 0 || !S_ISREG (st.st_mode))
5976 error ("%s: could not determine length of compare-debug file %s",
5977 gcc_input_filename, cmpfile[i]);
5982 length[i] = st.st_size;
5985 if (!ret && length[0] != length[1])
5987 error ("%s: -fcompare-debug failure (length)", gcc_input_filename);
5992 for (i = 0; i < 2; i++)
5994 int fd = open (cmpfile[i], O_RDONLY);
5997 error ("%s: could not open compare-debug file %s",
5998 gcc_input_filename, cmpfile[i]);
6003 map[i] = mmap (NULL, length[i], PROT_READ, MAP_PRIVATE, fd, 0);
6006 if (map[i] == (void *) MAP_FAILED)
6015 if (memcmp (map[0], map[1], length[0]) != 0)
6017 error ("%s: -fcompare-debug failure", gcc_input_filename);
6022 for (i = 0; i < 2; i++)
6024 munmap ((caddr_t) map[i], length[i]);
6033 for (i = 0; i < 2; i++)
6035 temp[i] = fopen (cmpfile[i], "r");
6038 error ("%s: could not open compare-debug file %s",
6039 gcc_input_filename, cmpfile[i]);
6045 if (!ret && temp[0] && temp[1])
6049 c0 = fgetc (temp[0]);
6050 c1 = fgetc (temp[1]);
6054 error ("%s: -fcompare-debug failure",
6055 gcc_input_filename);
6064 for (i = 1; i >= 0; i--)
6073 extern int main (int, char **);
6076 main (int argc, char **argv)
6080 int linker_was_run = 0;
6081 int lang_n_infiles = 0;
6082 int num_linker_inputs = 0;
6083 char *explicit_link_files;
6085 char *lto_wrapper_file;
6087 struct user_specs *uptr;
6088 char **old_argv = argv;
6089 struct cl_decoded_option *decoded_options;
6090 unsigned int decoded_options_count;
6092 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
6093 on ?: in file-scope variable initializations. */
6094 asm_debug = ASM_DEBUG_SPEC;
6096 p = argv[0] + strlen (argv[0]);
6097 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
6101 xmalloc_set_program_name (progname);
6103 expandargv (&argc, &argv);
6105 /* Determine if any expansions were made. */
6106 if (argv != old_argv)
6107 at_file_supplied = true;
6109 /* Register the language-independent parameters. */
6110 global_init_params ();
6113 init_options_struct (&global_options, &global_options_set);
6115 decode_cmdline_options_to_array (argc, CONST_CAST2 (const char **, char **,
6118 &decoded_options, &decoded_options_count);
6120 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6121 /* Perform host dependent initialization when needed. */
6122 GCC_DRIVER_HOST_INITIALIZATION;
6125 /* Unlock the stdio streams. */
6126 unlock_std_streams ();
6128 gcc_init_libintl ();
6130 diagnostic_initialize (global_dc, 0);
6131 if (atexit (delete_temp_files) != 0)
6132 fatal_error ("atexit failed");
6134 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
6135 signal (SIGINT, fatal_signal);
6137 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
6138 signal (SIGHUP, fatal_signal);
6140 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
6141 signal (SIGTERM, fatal_signal);
6143 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
6144 signal (SIGPIPE, fatal_signal);
6147 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6148 receive the signal. A different setting is inheritable */
6149 signal (SIGCHLD, SIG_DFL);
6152 /* Parsing and gimplification sometimes need quite large stack.
6153 Increase stack size limits if possible. */
6154 stack_limit_increase (64 * 1024 * 1024);
6156 /* Allocate the argument vector. */
6159 obstack_init (&obstack);
6161 /* Build multilib_select, et. al from the separate lines that make up each
6162 multilib selection. */
6164 const char *const *q = multilib_raw;
6167 obstack_init (&multilib_obstack);
6168 while ((p = *q++) != (char *) 0)
6169 obstack_grow (&multilib_obstack, p, strlen (p));
6171 obstack_1grow (&multilib_obstack, 0);
6172 multilib_select = XOBFINISH (&multilib_obstack, const char *);
6174 q = multilib_matches_raw;
6175 while ((p = *q++) != (char *) 0)
6176 obstack_grow (&multilib_obstack, p, strlen (p));
6178 obstack_1grow (&multilib_obstack, 0);
6179 multilib_matches = XOBFINISH (&multilib_obstack, const char *);
6181 q = multilib_exclusions_raw;
6182 while ((p = *q++) != (char *) 0)
6183 obstack_grow (&multilib_obstack, p, strlen (p));
6185 obstack_1grow (&multilib_obstack, 0);
6186 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *);
6189 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
6192 obstack_1grow (&multilib_obstack, ' ');
6193 obstack_grow (&multilib_obstack,
6194 multilib_defaults_raw[i],
6195 strlen (multilib_defaults_raw[i]));
6199 obstack_1grow (&multilib_obstack, 0);
6200 multilib_defaults = XOBFINISH (&multilib_obstack, const char *);
6203 #ifdef INIT_ENVIRONMENT
6204 /* Set up any other necessary machine specific environment variables. */
6205 xputenv (INIT_ENVIRONMENT);
6208 /* Make a table of what switches there are (switches, n_switches).
6209 Make a table of specified input files (infiles, n_infiles).
6210 Decode switches that are handled locally. */
6212 process_command (decoded_options_count, decoded_options);
6214 /* Initialize the vector of specs to just the default.
6215 This means one element containing 0s, as a terminator. */
6217 compilers = XNEWVAR (struct compiler, sizeof default_compilers);
6218 memcpy (compilers, default_compilers, sizeof default_compilers);
6219 n_compilers = n_default_compilers;
6221 /* Read specs from a file if there is one. */
6223 machine_suffix = concat (spec_machine, dir_separator_str,
6224 spec_version, dir_separator_str, NULL);
6225 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6227 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true);
6228 /* Read the specs file unless it is a default one. */
6229 if (specs_file != 0 && strcmp (specs_file, "specs"))
6230 read_specs (specs_file, TRUE);
6234 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6235 for any override of as, ld and libraries. */
6236 specs_file = (char *) alloca (strlen (standard_exec_prefix)
6237 + strlen (just_machine_suffix) + sizeof ("specs"));
6239 strcpy (specs_file, standard_exec_prefix);
6240 strcat (specs_file, just_machine_suffix);
6241 strcat (specs_file, "specs");
6242 if (access (specs_file, R_OK) == 0)
6243 read_specs (specs_file, TRUE);
6245 /* Process any configure-time defaults specified for the command line
6246 options, via OPTION_DEFAULT_SPECS. */
6247 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6248 do_option_spec (option_default_specs[i].name,
6249 option_default_specs[i].spec);
6251 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6252 of the command line. */
6254 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6255 do_self_spec (driver_self_specs[i]);
6257 /* If not cross-compiling, look for executables in the standard
6259 if (*cross_compile == '0')
6261 if (*md_exec_prefix)
6263 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6264 PREFIX_PRIORITY_LAST, 0, 0);
6268 /* Process sysroot_suffix_spec. */
6269 if (*sysroot_suffix_spec != 0
6270 && do_spec_2 (sysroot_suffix_spec) == 0)
6272 if (VEC_length (const_char_p, argbuf) > 1)
6273 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6274 else if (VEC_length (const_char_p, argbuf) == 1)
6275 target_sysroot_suffix = xstrdup (VEC_last (const_char_p, argbuf));
6278 #ifdef HAVE_LD_SYSROOT
6279 /* Pass the --sysroot option to the linker, if it supports that. If
6280 there is a sysroot_suffix_spec, it has already been processed by
6281 this point, so target_system_root really is the system root we
6283 if (target_system_root)
6285 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6286 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
6287 set_spec ("link", XOBFINISH (&obstack, const char *));
6291 /* Process sysroot_hdrs_suffix_spec. */
6292 if (*sysroot_hdrs_suffix_spec != 0
6293 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6295 if (VEC_length (const_char_p, argbuf) > 1)
6296 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6297 else if (VEC_length (const_char_p, argbuf) == 1)
6298 target_sysroot_hdrs_suffix = xstrdup (VEC_last (const_char_p, argbuf));
6301 /* Look for startfiles in the standard places. */
6302 if (*startfile_prefix_spec != 0
6303 && do_spec_2 (startfile_prefix_spec) == 0
6304 && do_spec_1 (" ", 0, NULL) == 0)
6308 FOR_EACH_VEC_ELT (const_char_p, argbuf, ndx, arg)
6309 add_sysrooted_prefix (&startfile_prefixes, arg, "BINUTILS",
6310 PREFIX_PRIORITY_LAST, 0, 1);
6312 /* We should eventually get rid of all these and stick to
6313 startfile_prefix_spec exclusively. */
6314 else if (*cross_compile == '0' || target_system_root)
6316 if (*md_startfile_prefix)
6317 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6318 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6320 if (*md_startfile_prefix_1)
6321 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6322 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6324 /* If standard_startfile_prefix is relative, base it on
6325 standard_exec_prefix. This lets us move the installed tree
6326 as a unit. If GCC_EXEC_PREFIX is defined, base
6327 standard_startfile_prefix on that as well.
6329 If the prefix is relative, only search it for native compilers;
6330 otherwise we will search a directory containing host libraries. */
6331 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
6332 add_sysrooted_prefix (&startfile_prefixes,
6333 standard_startfile_prefix, "BINUTILS",
6334 PREFIX_PRIORITY_LAST, 0, 1);
6335 else if (*cross_compile == '0')
6337 add_prefix (&startfile_prefixes,
6338 concat (gcc_exec_prefix
6339 ? gcc_exec_prefix : standard_exec_prefix,
6341 standard_startfile_prefix, NULL),
6342 NULL, PREFIX_PRIORITY_LAST, 0, 1);
6345 /* Sysrooted prefixes are relocated because target_system_root is
6346 also relocated by gcc_exec_prefix. */
6347 if (*standard_startfile_prefix_1)
6348 add_sysrooted_prefix (&startfile_prefixes,
6349 standard_startfile_prefix_1, "BINUTILS",
6350 PREFIX_PRIORITY_LAST, 0, 1);
6351 if (*standard_startfile_prefix_2)
6352 add_sysrooted_prefix (&startfile_prefixes,
6353 standard_startfile_prefix_2, "BINUTILS",
6354 PREFIX_PRIORITY_LAST, 0, 1);
6357 /* Process any user specified specs in the order given on the command
6359 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6361 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6363 read_specs (filename ? filename : uptr->filename, FALSE);
6366 /* Process any user self specs. */
6368 struct spec_list *sl;
6369 for (sl = specs; sl; sl = sl->next)
6370 if (sl->name_len == sizeof "self_spec" - 1
6371 && !strcmp (sl->name, "self_spec"))
6372 do_self_spec (*sl->ptr_spec);
6377 enum save_temps save;
6379 if (!compare_debug_second)
6381 n_switches_debug_check[1] = n_switches;
6382 n_switches_alloc_debug_check[1] = n_switches_alloc;
6383 switches_debug_check[1] = XDUPVEC (struct switchstr, switches,
6386 do_self_spec ("%:compare-debug-self-opt()");
6387 n_switches_debug_check[0] = n_switches;
6388 n_switches_alloc_debug_check[0] = n_switches_alloc;
6389 switches_debug_check[0] = switches;
6391 n_switches = n_switches_debug_check[1];
6392 n_switches_alloc = n_switches_alloc_debug_check[1];
6393 switches = switches_debug_check[1];
6396 /* Avoid crash when computing %j in this early. */
6397 save = save_temps_flag;
6398 save_temps_flag = SAVE_TEMPS_NONE;
6400 compare_debug = -compare_debug;
6401 do_self_spec ("%:compare-debug-self-opt()");
6403 save_temps_flag = save;
6405 if (!compare_debug_second)
6407 n_switches_debug_check[1] = n_switches;
6408 n_switches_alloc_debug_check[1] = n_switches_alloc;
6409 switches_debug_check[1] = switches;
6410 compare_debug = -compare_debug;
6411 n_switches = n_switches_debug_check[0];
6412 n_switches_alloc = n_switches_debug_check[0];
6413 switches = switches_debug_check[0];
6418 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6419 if (gcc_exec_prefix)
6420 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6421 spec_version, dir_separator_str, NULL);
6423 /* Now we have the specs.
6424 Set the `valid' bits for switches that match anything in any spec. */
6426 validate_all_switches ();
6428 /* Now that we have the switches and the specs, set
6429 the subdirectory based on the options. */
6430 set_multilib_dir ();
6432 /* Set up to remember the pathname of gcc and any options
6433 needed for collect. We use argv[0] instead of progname because
6434 we need the complete pathname. */
6435 obstack_init (&collect_obstack);
6436 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6437 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6438 xputenv (XOBFINISH (&collect_obstack, char *));
6440 /* Set up to remember the pathname of the lto wrapper. */
6442 lto_wrapper_file = find_a_file (&exec_prefixes, "lto-wrapper", X_OK, false);
6443 if (lto_wrapper_file)
6445 lto_wrapper_spec = lto_wrapper_file;
6446 obstack_init (&collect_obstack);
6447 obstack_grow (&collect_obstack, "COLLECT_LTO_WRAPPER=",
6448 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
6449 obstack_grow (&collect_obstack, lto_wrapper_spec,
6450 strlen (lto_wrapper_spec) + 1);
6451 xputenv (XOBFINISH (&collect_obstack, char *));
6454 /* Warn about any switches that no pass was interested in. */
6456 for (i = 0; (int) i < n_switches; i++)
6457 if (! switches[i].validated)
6458 error ("unrecognized option %<-%s%>", switches[i].part1);
6460 /* Obey some of the options. */
6462 if (print_search_dirs)
6464 printf (_("install: %s%s\n"),
6465 gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
6466 gcc_exec_prefix ? "" : machine_suffix);
6467 printf (_("programs: %s\n"),
6468 build_search_list (&exec_prefixes, "", false, false));
6469 printf (_("libraries: %s\n"),
6470 build_search_list (&startfile_prefixes, "", false, true));
6474 if (print_file_name)
6476 printf ("%s\n", find_file (print_file_name));
6480 if (print_prog_name)
6482 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6483 printf ("%s\n", (newname ? newname : print_prog_name));
6487 if (print_multi_lib)
6489 print_multilib_info ();
6493 if (print_multi_directory)
6495 if (multilib_dir == NULL)
6498 printf ("%s\n", multilib_dir);
6504 if (target_system_root)
6506 if (target_sysroot_suffix)
6507 printf ("%s%s\n", target_system_root, target_sysroot_suffix);
6509 printf ("%s\n", target_system_root);
6514 if (print_multi_os_directory)
6516 if (multilib_os_dir == NULL)
6519 printf ("%s\n", multilib_os_dir);
6523 if (print_sysroot_headers_suffix)
6525 if (*sysroot_hdrs_suffix_spec)
6527 printf("%s\n", (target_sysroot_hdrs_suffix
6528 ? target_sysroot_hdrs_suffix
6533 /* The error status indicates that only one set of fixed
6534 headers should be built. */
6535 fatal_error ("not configured with sysroot headers suffix");
6538 if (print_help_list)
6544 printf (_("\nFor bug reporting instructions, please see:\n"));
6545 printf ("%s.\n", bug_report_url);
6550 /* We do not exit here. Instead we have created a fake input file
6551 called 'help-dummy' which needs to be compiled, and we pass this
6552 on the various sub-processes, along with the --help switch.
6553 Ensure their output appears after ours. */
6554 fputc ('\n', stdout);
6560 printf (_("%s %s%s\n"), progname, pkgversion_string,
6562 printf ("Copyright %s 2012 Free Software Foundation, Inc.\n",
6564 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
6565 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
6570 /* We do not exit here. We use the same mechanism of --help to print
6571 the version of the sub-processes. */
6572 fputc ('\n', stdout);
6581 fnotice (stderr, "Target: %s\n", spec_machine);
6582 fnotice (stderr, "Configured with: %s\n", configuration_arguments);
6584 #ifdef THREAD_MODEL_SPEC
6585 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6586 but there's no point in doing all this processing just to get
6587 thread_model back. */
6588 obstack_init (&obstack);
6589 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6590 obstack_1grow (&obstack, '\0');
6591 thrmod = XOBFINISH (&obstack, const char *);
6593 thrmod = thread_model;
6596 fnotice (stderr, "Thread model: %s\n", thrmod);
6598 /* compiler_version is truncated at the first space when initialized
6599 from version string, so truncate version_string at the first space
6600 before comparing. */
6601 for (n = 0; version_string[n]; n++)
6602 if (version_string[n] == ' ')
6605 if (! strncmp (version_string, compiler_version, n)
6606 && compiler_version[n] == 0)
6607 fnotice (stderr, "gcc version %s %s\n", version_string,
6610 fnotice (stderr, "gcc driver version %s %sexecuting gcc version %s\n",
6611 version_string, pkgversion_string, compiler_version);
6617 if (n_infiles == added_libraries)
6618 fatal_error ("no input files");
6623 /* Make a place to record the compiler output file names
6624 that correspond to the input files. */
6627 i += lang_specific_extra_outfiles;
6628 outfiles = XCNEWVEC (const char *, i);
6630 /* Record which files were specified explicitly as link input. */
6632 explicit_link_files = XCNEWVEC (char, n_infiles);
6634 combine_inputs = have_o || flag_wpa;
6636 for (i = 0; (int) i < n_infiles; i++)
6638 const char *name = infiles[i].name;
6639 struct compiler *compiler = lookup_compiler (name,
6641 infiles[i].language);
6643 if (compiler && !(compiler->combinable))
6644 combine_inputs = false;
6646 if (lang_n_infiles > 0 && compiler != input_file_compiler
6647 && infiles[i].language && infiles[i].language[0] != '*')
6648 infiles[i].incompiler = compiler;
6652 input_file_compiler = compiler;
6653 infiles[i].incompiler = compiler;
6657 /* Since there is no compiler for this input file, assume it is a
6659 explicit_link_files[i] = 1;
6660 infiles[i].incompiler = NULL;
6662 infiles[i].compiled = false;
6663 infiles[i].preprocessed = false;
6666 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1)
6667 fatal_error ("cannot specify -o with -c, -S or -E with multiple files");
6669 for (i = 0; (int) i < n_infiles; i++)
6671 int this_file_error = 0;
6673 /* Tell do_spec what to substitute for %i. */
6675 input_file_number = i;
6676 set_input (infiles[i].name);
6678 if (infiles[i].compiled)
6681 /* Use the same thing in %o, unless cp->spec says otherwise. */
6683 outfiles[i] = gcc_input_filename;
6685 /* Figure out which compiler from the file's suffix. */
6688 = lookup_compiler (infiles[i].name, input_filename_length,
6689 infiles[i].language);
6691 if (input_file_compiler)
6693 /* Ok, we found an applicable compiler. Run its spec. */
6695 if (input_file_compiler->spec[0] == '#')
6697 error ("%s: %s compiler not installed on this system",
6698 gcc_input_filename, &input_file_compiler->spec[1]);
6699 this_file_error = 1;
6705 free (debug_check_temp_file[0]);
6706 debug_check_temp_file[0] = NULL;
6708 free (debug_check_temp_file[1]);
6709 debug_check_temp_file[1] = NULL;
6712 value = do_spec (input_file_compiler->spec);
6713 infiles[i].compiled = true;
6715 this_file_error = 1;
6716 else if (compare_debug && debug_check_temp_file[0])
6719 inform (0, "recompiling with -fcompare-debug");
6721 compare_debug = -compare_debug;
6722 n_switches = n_switches_debug_check[1];
6723 n_switches_alloc = n_switches_alloc_debug_check[1];
6724 switches = switches_debug_check[1];
6726 value = do_spec (input_file_compiler->spec);
6728 compare_debug = -compare_debug;
6729 n_switches = n_switches_debug_check[0];
6730 n_switches_alloc = n_switches_alloc_debug_check[0];
6731 switches = switches_debug_check[0];
6735 error ("during -fcompare-debug recompilation");
6736 this_file_error = 1;
6739 gcc_assert (debug_check_temp_file[1]
6740 && filename_cmp (debug_check_temp_file[0],
6741 debug_check_temp_file[1]));
6744 inform (0, "comparing final insns dumps");
6746 if (compare_files (debug_check_temp_file))
6747 this_file_error = 1;
6752 free (debug_check_temp_file[0]);
6753 debug_check_temp_file[0] = NULL;
6755 free (debug_check_temp_file[1]);
6756 debug_check_temp_file[1] = NULL;
6761 /* If this file's name does not contain a recognized suffix,
6762 record it as explicit linker input. */
6765 explicit_link_files[i] = 1;
6767 /* Clear the delete-on-failure queue, deleting the files in it
6768 if this compilation failed. */
6770 if (this_file_error)
6772 delete_failure_queue ();
6775 /* If this compilation succeeded, don't delete those files later. */
6776 clear_failure_queue ();
6779 /* Reset the input file name to the first compile/object file name, for use
6780 with %b in LINK_SPEC. We use the first input file that we can find
6781 a compiler to compile it instead of using infiles.language since for
6782 languages other than C we use aliases that we then lookup later. */
6787 for (i = 0; i < n_infiles ; i++)
6788 if (infiles[i].incompiler
6789 || (infiles[i].language && infiles[i].language[0] != '*'))
6791 set_input (infiles[i].name);
6798 /* Make sure INPUT_FILE_NUMBER points to first available open
6800 input_file_number = n_infiles;
6801 if (lang_specific_pre_link ())
6805 /* Determine if there are any linker input files. */
6806 num_linker_inputs = 0;
6807 for (i = 0; (int) i < n_infiles; i++)
6808 if (explicit_link_files[i] || outfiles[i] != NULL)
6809 num_linker_inputs++;
6811 /* Run ld to link all the compiler output files. */
6813 if (num_linker_inputs > 0 && !seen_error () && print_subprocess_help < 2)
6815 int tmp = execution_count;
6816 #if HAVE_LTO_PLUGIN > 0
6817 #if HAVE_LTO_PLUGIN == 2
6818 const char *fno_use_linker_plugin = "fno-use-linker-plugin";
6820 const char *fuse_linker_plugin = "fuse-linker-plugin";
6824 /* We'll use ld if we can't find collect2. */
6825 if (! strcmp (linker_name_spec, "collect2"))
6827 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false);
6829 linker_name_spec = "ld";
6832 #if HAVE_LTO_PLUGIN > 0
6833 #if HAVE_LTO_PLUGIN == 2
6834 if (!switch_matches (fno_use_linker_plugin,
6835 fno_use_linker_plugin + strlen (fno_use_linker_plugin), 0))
6837 if (switch_matches (fuse_linker_plugin,
6838 fuse_linker_plugin + strlen (fuse_linker_plugin), 0))
6841 linker_plugin_file_spec = find_a_file (&exec_prefixes,
6842 LTOPLUGINSONAME, R_OK,
6844 if (!linker_plugin_file_spec)
6845 fatal_error ("-fuse-linker-plugin, but %s not found", LTOPLUGINSONAME);
6848 lto_gcc_spec = argv[0];
6850 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6852 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false);
6853 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true);
6855 if (print_subprocess_help == 1)
6857 printf (_("\nLinker options\n==============\n\n"));
6858 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
6859 " to the linker.\n\n"));
6862 value = do_spec (link_command_spec);
6865 linker_was_run = (tmp != execution_count);
6868 /* If options said don't run linker,
6869 complain about input files to be given to the linker. */
6871 if (! linker_was_run && !seen_error ())
6872 for (i = 0; (int) i < n_infiles; i++)
6873 if (explicit_link_files[i]
6874 && !(infiles[i].language && infiles[i].language[0] == '*'))
6875 warning (0, "%s: linker input file unused because linking not done",
6878 /* Delete some or all of the temporary files we made. */
6881 delete_failure_queue ();
6882 delete_temp_files ();
6884 if (print_help_list)
6886 printf (("\nFor bug reporting instructions, please see:\n"));
6887 printf ("%s\n", bug_report_url);
6891 return (signal_count != 0 ? 2
6892 : seen_error () ? (pass_exit_codes ? greatest_status : 1)
6896 /* Find the proper compilation spec for the file name NAME,
6897 whose length is LENGTH. LANGUAGE is the specified language,
6898 or 0 if this file is to be passed to the linker. */
6900 static struct compiler *
6901 lookup_compiler (const char *name, size_t length, const char *language)
6903 struct compiler *cp;
6905 /* If this was specified by the user to be a linker input, indicate that. */
6906 if (language != 0 && language[0] == '*')
6909 /* Otherwise, look for the language, if one is spec'd. */
6912 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6913 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6916 error ("language %s not recognized", language);
6920 /* Look for a suffix. */
6921 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6923 if (/* The suffix `-' matches only the file name `-'. */
6924 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6925 || (strlen (cp->suffix) < length
6926 /* See if the suffix matches the end of NAME. */
6927 && !strcmp (cp->suffix,
6928 name + length - strlen (cp->suffix))
6933 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6934 /* Look again, but case-insensitively this time. */
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))
6944 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6945 && !strcasecmp (cp->suffix,
6946 name + length - strlen (cp->suffix)))
6952 if (cp >= compilers)
6954 if (cp->spec[0] != '@')
6955 /* A non-alias entry: return it. */
6958 /* An alias entry maps a suffix to a language.
6959 Search for the language; pass 0 for NAME and LENGTH
6960 to avoid infinite recursion if language not found. */
6961 return lookup_compiler (NULL, 0, cp->spec + 1);
6967 save_string (const char *s, int len)
6969 char *result = XNEWVEC (char, len + 1);
6971 memcpy (result, s, len);
6977 pfatal_with_name (const char *name)
6979 perror_with_name (name);
6980 delete_temp_files ();
6985 perror_with_name (const char *name)
6987 error ("%s: %m", name);
6991 validate_switches_from_spec (const char *spec)
6993 const char *p = spec;
6996 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
6997 /* We have a switch spec. */
6998 p = validate_switches (p + 1);
7002 validate_all_switches (void)
7004 struct compiler *comp;
7005 struct spec_list *spec;
7007 for (comp = compilers; comp->spec; comp++)
7008 validate_switches_from_spec (comp->spec);
7010 /* Look through the linked list of specs read from the specs file. */
7011 for (spec = specs; spec; spec = spec->next)
7012 validate_switches_from_spec (*spec->ptr_spec);
7014 validate_switches_from_spec (link_command_spec);
7017 /* Look at the switch-name that comes after START
7018 and mark as valid all supplied switches that match it. */
7021 validate_switches (const char *start)
7023 const char *p = start;
7027 bool suffix = false;
7028 bool starred = false;
7030 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7039 if (*p == '.' || *p == ',')
7043 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
7044 || *p == ',' || *p == '.' || *p == '@')
7049 starred = true, p++;
7055 /* Mark all matching switches as valid. */
7056 for (i = 0; i < n_switches; i++)
7057 if (!strncmp (switches[i].part1, atom, len)
7058 && (starred || switches[i].part1[len] == 0))
7059 switches[i].validated = 1;
7063 if (*p && (p[-1] == '|' || p[-1] == '&'))
7066 if (*p && p[-1] == ':')
7068 while (*p && *p != ';' && *p != '}')
7073 if (*p == '{' || *p == '<')
7074 p = validate_switches (p+1);
7075 else if (p[0] == 'W' && p[1] == '{')
7076 p = validate_switches (p+2);
7083 if (*p && p[-1] == ';')
7097 static struct mdswitchstr *mdswitches;
7098 static int n_mdswitches;
7100 /* Check whether a particular argument was used. The first time we
7101 canonicalize the switches to keep only the ones we care about. */
7104 used_arg (const char *p, int len)
7109 const char *replace;
7114 static struct mswitchstr *mswitches;
7115 static int n_mswitches;
7120 struct mswitchstr *matches;
7124 /* Break multilib_matches into the component strings of string
7125 and replacement string. */
7126 for (q = multilib_matches; *q != '\0'; q++)
7131 = (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
7133 q = multilib_matches;
7142 fatal_error ("multilib spec %qs is invalid",
7147 matches[i].len = q - matches[i].str;
7149 matches[i].replace = ++q;
7150 while (*q != ';' && *q != '\0')
7153 goto invalid_matches;
7156 matches[i].rep_len = q - matches[i].replace;
7162 /* Now build a list of the replacement string for switches that we care
7163 about. Make sure we allocate at least one entry. This prevents
7164 xmalloc from calling fatal, and prevents us from re-executing this
7167 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1));
7168 for (i = 0; i < n_switches; i++)
7169 if ((switches[i].live_cond & SWITCH_IGNORE) == 0)
7171 int xlen = strlen (switches[i].part1);
7172 for (j = 0; j < cnt; j++)
7173 if (xlen == matches[j].len
7174 && ! strncmp (switches[i].part1, matches[j].str, xlen))
7176 mswitches[n_mswitches].str = matches[j].replace;
7177 mswitches[n_mswitches].len = matches[j].rep_len;
7178 mswitches[n_mswitches].replace = (char *) 0;
7179 mswitches[n_mswitches].rep_len = 0;
7185 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7186 on the command line nor any options mutually incompatible with
7188 for (i = 0; i < n_mdswitches; i++)
7192 for (q = multilib_options; *q != '\0'; q++)
7198 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
7199 || strchr (" /", q[mdswitches[i].len]) == NULL)
7201 while (*q != ' ' && *q != '/' && *q != '\0')
7208 if (*q != ' ' && *q != '\0')
7210 while (*r != ' ' && *r != '\0')
7213 while (*q != ' ' && *q != '/' && *q != '\0')
7216 if (used_arg (r, q - r))
7221 mswitches[n_mswitches].str = mdswitches[i].str;
7222 mswitches[n_mswitches].len = mdswitches[i].len;
7223 mswitches[n_mswitches].replace = (char *) 0;
7224 mswitches[n_mswitches].rep_len = 0;
7237 for (i = 0; i < n_mswitches; i++)
7238 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
7245 default_arg (const char *p, int len)
7249 for (i = 0; i < n_mdswitches; i++)
7250 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
7256 /* Work out the subdirectory to use based on the options. The format of
7257 multilib_select is a list of elements. Each element is a subdirectory
7258 name followed by a list of options followed by a semicolon. The format
7259 of multilib_exclusions is the same, but without the preceding
7260 directory. First gcc will check the exclusions, if none of the options
7261 beginning with an exclamation point are present, and all of the other
7262 options are present, then we will ignore this completely. Passing
7263 that, gcc will consider each multilib_select in turn using the same
7264 rules for matching the options. If a match is found, that subdirectory
7268 set_multilib_dir (void)
7271 unsigned int this_path_len;
7272 const char *this_path, *this_arg;
7273 const char *start, *end;
7275 int ok, ndfltok, first;
7278 start = multilib_defaults;
7279 while (*start == ' ' || *start == '\t')
7281 while (*start != '\0')
7284 while (*start != ' ' && *start != '\t' && *start != '\0')
7286 while (*start == ' ' || *start == '\t')
7294 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches);
7295 for (start = multilib_defaults; *start != '\0'; start = end + 1)
7297 while (*start == ' ' || *start == '\t')
7303 for (end = start + 1;
7304 *end != ' ' && *end != '\t' && *end != '\0'; end++)
7307 obstack_grow (&multilib_obstack, start, end - start);
7308 obstack_1grow (&multilib_obstack, 0);
7309 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *);
7310 mdswitches[i++].len = end - start;
7317 p = multilib_exclusions;
7320 /* Ignore newlines. */
7327 /* Check the arguments. */
7334 fatal_error ("multilib exclusions %qs is invalid",
7335 multilib_exclusions);
7345 while (*p != ' ' && *p != ';')
7348 goto invalid_exclusions;
7352 if (*this_arg != '!')
7360 ok = used_arg (this_arg, p - this_arg);
7375 p = multilib_select;
7378 /* Ignore newlines. */
7385 /* Get the initial path. */
7392 fatal_error ("multilib select %qs is invalid",
7397 this_path_len = p - this_path;
7399 /* Check the arguments. */
7406 goto invalid_select;
7415 while (*p != ' ' && *p != ';')
7418 goto invalid_select;
7422 if (*this_arg != '!')
7430 /* If this is a default argument, we can just ignore it.
7431 This is true even if this_arg begins with '!'. Beginning
7432 with '!' does not mean that this argument is necessarily
7433 inappropriate for this library: it merely means that
7434 there is a more specific library which uses this
7435 argument. If this argument is a default, we need not
7436 consider that more specific library. */
7437 ok = used_arg (this_arg, p - this_arg);
7444 if (default_arg (this_arg, p - this_arg))
7453 if (this_path_len != 1
7454 || this_path[0] != '.')
7456 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1);
7459 strncpy (new_multilib_dir, this_path, this_path_len);
7460 new_multilib_dir[this_path_len] = '\0';
7461 q = strchr (new_multilib_dir, ':');
7464 multilib_dir = new_multilib_dir;
7471 const char *q = this_path, *end = this_path + this_path_len;
7473 while (q < end && *q != ':')
7477 char *new_multilib_os_dir = XNEWVEC (char, end - q);
7478 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
7479 new_multilib_os_dir[end - q - 1] = '\0';
7480 multilib_os_dir = new_multilib_os_dir;
7488 if (multilib_dir == NULL && multilib_os_dir != NULL
7489 && strcmp (multilib_os_dir, ".") == 0)
7491 free (CONST_CAST (char *, multilib_os_dir));
7492 multilib_os_dir = NULL;
7494 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7495 multilib_os_dir = multilib_dir;
7498 /* Print out the multiple library subdirectory selection
7499 information. This prints out a series of lines. Each line looks
7500 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7501 required. Only the desired options are printed out, the negative
7502 matches. The options are print without a leading dash. There are
7503 no spaces to make it easy to use the information in the shell.
7504 Each subdirectory is printed only once. This assumes the ordering
7505 generated by the genmultilib script. Also, we leave out ones that match
7509 print_multilib_info (void)
7511 const char *p = multilib_select;
7512 const char *last_path = 0, *this_path;
7514 unsigned int last_path_len = 0;
7519 /* Ignore newlines. */
7526 /* Get the initial path. */
7533 fatal_error ("multilib select %qs is invalid", multilib_select);
7539 /* When --disable-multilib was used but target defines
7540 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7541 to find multilib_os_dir, so skip them from output. */
7542 if (this_path[0] == '.' && this_path[1] == ':')
7545 /* Check for matches with the multilib_exclusions. We don't bother
7546 with the '!' in either list. If any of the exclusion rules match
7547 all of its options with the select rule, we skip it. */
7549 const char *e = multilib_exclusions;
7550 const char *this_arg;
7555 /* Ignore newlines. */
7562 /* Check the arguments. */
7571 fatal_error ("multilib exclusion %qs is invalid",
7572 multilib_exclusions);
7583 while (*e != ' ' && *e != ';')
7586 goto invalid_exclusion;
7594 int len = e - this_arg;
7597 goto invalid_select;
7601 while (*q != ' ' && *q != ';')
7604 goto invalid_select;
7608 if (! strncmp (arg, this_arg,
7609 (len < q - arg) ? q - arg : len)
7610 || default_arg (this_arg, e - this_arg))
7640 /* If this is a duplicate, skip it. */
7641 skip = (last_path != 0
7642 && (unsigned int) (p - this_path) == last_path_len
7643 && ! filename_ncmp (last_path, this_path, last_path_len));
7645 last_path = this_path;
7646 last_path_len = p - this_path;
7649 /* If this directory requires any default arguments, we can skip
7650 it. We will already have printed a directory identical to
7651 this one which does not require that default argument. */
7662 goto invalid_select;
7669 while (*q != ' ' && *q != ';')
7672 goto invalid_select;
7677 && default_arg (arg, q - arg))
7692 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7703 goto invalid_select;
7711 use_arg = *p != '!';
7716 while (*p != ' ' && *p != ';')
7719 goto invalid_select;
7731 /* If there are extra options, print them now. */
7732 if (multilib_extra && *multilib_extra)
7734 int print_at = TRUE;
7737 for (q = multilib_extra; *q != '\0'; q++)
7758 /* getenv built-in spec function.
7760 Returns the value of the environment variable given by its first
7761 argument, concatenated with the second argument. If the
7762 environment variable is not defined, a fatal error is issued. */
7765 getenv_spec_function (int argc, const char **argv)
7775 value = getenv (argv[0]);
7777 fatal_error ("environment variable %qs not defined", argv[0]);
7779 /* We have to escape every character of the environment variable so
7780 they are not interpreted as active spec characters. A
7781 particularly painful case is when we are reading a variable
7782 holding a windows path complete with \ separators. */
7783 len = strlen (value) * 2 + strlen (argv[1]) + 1;
7784 result = XNEWVAR (char, len);
7785 for (ptr = result; *value; ptr += 2)
7791 strcpy (ptr, argv[1]);
7796 /* if-exists built-in spec function.
7798 Checks to see if the file specified by the absolute pathname in
7799 ARGS exists. Returns that pathname if found.
7801 The usual use for this function is to check for a library file
7802 (whose name has been expanded with %s). */
7805 if_exists_spec_function (int argc, const char **argv)
7807 /* Must have only one argument. */
7808 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7814 /* if-exists-else built-in spec function.
7816 This is like if-exists, but takes an additional argument which
7817 is returned if the first argument does not exist. */
7820 if_exists_else_spec_function (int argc, const char **argv)
7822 /* Must have exactly two arguments. */
7826 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7832 /* replace-outfile built-in spec function.
7834 This looks for the first argument in the outfiles array's name and
7835 replaces it with the second argument. */
7838 replace_outfile_spec_function (int argc, const char **argv)
7841 /* Must have exactly two arguments. */
7845 for (i = 0; i < n_infiles; i++)
7847 if (outfiles[i] && !filename_cmp (outfiles[i], argv[0]))
7848 outfiles[i] = xstrdup (argv[1]);
7853 /* remove-outfile built-in spec function.
7855 * This looks for the first argument in the outfiles array's name and
7859 remove_outfile_spec_function (int argc, const char **argv)
7862 /* Must have exactly one argument. */
7866 for (i = 0; i < n_infiles; i++)
7868 if (outfiles[i] && !filename_cmp (outfiles[i], argv[0]))
7874 /* Given two version numbers, compares the two numbers.
7875 A version number must match the regular expression
7876 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
7879 compare_version_strings (const char *v1, const char *v2)
7884 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
7885 REG_EXTENDED | REG_NOSUB) != 0)
7887 rresult = regexec (&r, v1, 0, NULL, 0);
7888 if (rresult == REG_NOMATCH)
7889 fatal_error ("invalid version number %qs", v1);
7890 else if (rresult != 0)
7892 rresult = regexec (&r, v2, 0, NULL, 0);
7893 if (rresult == REG_NOMATCH)
7894 fatal_error ("invalid version number %qs", v2);
7895 else if (rresult != 0)
7898 return strverscmp (v1, v2);
7902 /* version_compare built-in spec function.
7904 This takes an argument of the following form:
7906 <comparison-op> <arg1> [<arg2>] <switch> <result>
7908 and produces "result" if the comparison evaluates to true,
7909 and nothing if it doesn't.
7911 The supported <comparison-op> values are:
7913 >= true if switch is a later (or same) version than arg1
7915 < true if switch is an earlier version than arg1
7917 >< true if switch is arg1 or later, and earlier than arg2
7918 <> true if switch is earlier than arg1 or is arg2 or later
7920 If the switch is not present, the condition is false unless
7921 the first character of the <comparison-op> is '!'.
7924 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
7925 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
7928 version_compare_spec_function (int argc, const char **argv)
7932 const char *switch_value = NULL;
7937 fatal_error ("too few arguments to %%:version-compare");
7938 if (argv[0][0] == '\0')
7940 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!')
7942 if (argc != nargs + 3)
7943 fatal_error ("too many arguments to %%:version-compare");
7945 switch_len = strlen (argv[nargs + 1]);
7946 for (i = 0; i < n_switches; i++)
7947 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len)
7948 && check_live_switch (i, switch_len))
7949 switch_value = switches[i].part1 + switch_len;
7951 if (switch_value == NULL)
7955 comp1 = compare_version_strings (switch_value, argv[1]);
7957 comp2 = compare_version_strings (switch_value, argv[2]);
7959 comp2 = -1; /* This value unused. */
7962 switch (argv[0][0] << 8 | argv[0][1])
7964 case '>' << 8 | '=':
7965 result = comp1 >= 0;
7967 case '!' << 8 | '<':
7968 result = comp1 >= 0 || switch_value == NULL;
7973 case '!' << 8 | '>':
7974 result = comp1 < 0 || switch_value == NULL;
7976 case '>' << 8 | '<':
7977 result = comp1 >= 0 && comp2 < 0;
7979 case '<' << 8 | '>':
7980 result = comp1 < 0 || comp2 >= 0;
7984 fatal_error ("unknown operator %qs in %%:version-compare", argv[0]);
7989 return argv[nargs + 2];
7992 /* %:include builtin spec function. This differs from %include in that it
7993 can be nested inside a spec, and thus be conditionalized. It takes
7994 one argument, the filename, and looks for it in the startfile path.
7995 The result is always NULL, i.e. an empty expansion. */
7998 include_spec_function (int argc, const char **argv)
8005 file = find_a_file (&startfile_prefixes, argv[0], R_OK, true);
8006 read_specs (file ? file : argv[0], FALSE);
8011 /* %:find-file spec function. This function replaces its argument by
8012 the file found thru find_file, that is the -print-file-name gcc
8015 find_file_spec_function (int argc, const char **argv)
8022 file = find_file (argv[0]);
8027 /* %:find-plugindir spec function. This function replaces its argument
8028 by the -iplugindir=<dir> option. `dir' is found thru find_file, that
8029 is the -print-file-name gcc program option. */
8031 find_plugindir_spec_function (int argc, const char **argv ATTRIBUTE_UNUSED)
8038 option = concat ("-iplugindir=", find_file ("plugin"), NULL);
8043 /* %:print-asm-header spec function. Print a banner to say that the
8044 following output is from the assembler. */
8047 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED,
8048 const char **argv ATTRIBUTE_UNUSED)
8050 printf (_("Assembler options\n=================\n\n"));
8051 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
8056 /* Get a random number for -frandom-seed */
8058 static unsigned HOST_WIDE_INT
8059 get_random_number (void)
8061 unsigned HOST_WIDE_INT ret = 0;
8064 fd = open ("/dev/urandom", O_RDONLY);
8067 read (fd, &ret, sizeof (HOST_WIDE_INT));
8073 /* Get some more or less random data. */
8074 #ifdef HAVE_GETTIMEOFDAY
8078 gettimeofday (&tv, NULL);
8079 ret = tv.tv_sec * 1000 + tv.tv_usec / 1000;
8083 time_t now = time (NULL);
8085 if (now != (time_t)-1)
8086 ret = (unsigned) now;
8090 return ret ^ getpid();
8093 /* %:compare-debug-dump-opt spec function. Save the last argument,
8094 expected to be the last -fdump-final-insns option, or generate a
8098 compare_debug_dump_opt_spec_function (int arg,
8099 const char **argv ATTRIBUTE_UNUSED)
8104 static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3];
8107 fatal_error ("too many arguments to %%:compare-debug-dump-opt");
8109 do_spec_2 ("%{fdump-final-insns=*:%*}");
8110 do_spec_1 (" ", 0, NULL);
8112 if (VEC_length (const_char_p, argbuf) > 0
8113 && strcmp (argv[VEC_length (const_char_p, argbuf) - 1], "."))
8118 name = xstrdup (argv[VEC_length (const_char_p, argbuf) - 1]);
8123 const char *ext = NULL;
8125 if (VEC_length (const_char_p, argbuf) > 0)
8127 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
8130 else if (!compare_debug)
8133 do_spec_2 ("%g.gkd");
8135 do_spec_1 (" ", 0, NULL);
8137 gcc_assert (VEC_length (const_char_p, argbuf) > 0);
8139 name = concat (VEC_last (const_char_p, argbuf), ext, NULL);
8141 ret = concat ("-fdump-final-insns=", name, NULL);
8144 which = compare_debug < 0;
8145 debug_check_temp_file[which] = name;
8149 unsigned HOST_WIDE_INT value = get_random_number ();
8151 sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value);
8155 ret = concat ("%{!frandom-seed=*:-frandom-seed=", random_seed, "} ",
8164 static const char *debug_auxbase_opt;
8166 /* %:compare-debug-self-opt spec function. Expands to the options
8167 that are to be passed in the second compilation of
8171 compare_debug_self_opt_spec_function (int arg,
8172 const char **argv ATTRIBUTE_UNUSED)
8175 fatal_error ("too many arguments to %%:compare-debug-self-opt");
8177 if (compare_debug >= 0)
8180 do_spec_2 ("%{c|S:%{o*:%*}}");
8181 do_spec_1 (" ", 0, NULL);
8183 if (VEC_length (const_char_p, argbuf) > 0)
8184 debug_auxbase_opt = concat ("-auxbase-strip ",
8185 VEC_last (const_char_p, argbuf),
8188 debug_auxbase_opt = NULL;
8191 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
8192 %<fdump-final-insns=* -w -S -o %j \
8193 %{!fcompare-debug-second:-fcompare-debug-second} \
8194 ", compare_debug_opt, NULL);
8197 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
8198 options that are to be passed in the second compilation of
8199 compare-debug. It expects, as an argument, the basename of the
8200 current input file name, with the .gk suffix appended to it. */
8203 compare_debug_auxbase_opt_spec_function (int arg,
8210 fatal_error ("too few arguments to %%:compare-debug-auxbase-opt");
8213 fatal_error ("too many arguments to %%:compare-debug-auxbase-opt");
8215 if (compare_debug >= 0)
8218 len = strlen (argv[0]);
8219 if (len < 3 || strcmp (argv[0] + len - 3, ".gk") != 0)
8220 fatal_error ("argument to %%:compare-debug-auxbase-opt "
8221 "does not end in .gk");
8223 if (debug_auxbase_opt)
8224 return debug_auxbase_opt;
8226 #define OPT "-auxbase "
8229 name = (char*) xmalloc (sizeof (OPT) + len);
8230 memcpy (name, OPT, sizeof (OPT) - 1);
8231 memcpy (name + sizeof (OPT) - 1, argv[0], len);
8232 name[sizeof (OPT) - 1 + len] = '\0';
8239 /* %:pass-through-libs spec function. Finds all -l options and input
8240 file names in the lib spec passed to it, and makes a list of them
8241 prepended with the plugin option to cause them to be passed through
8242 to the final link after all the new object files have been added. */
8245 pass_through_libs_spec_func (int argc, const char **argv)
8247 char *prepended = xstrdup (" ");
8249 /* Shlemiel the painter's algorithm. Innately horrible, but at least
8250 we know that there will never be more than a handful of strings to
8251 concat, and it's only once per run, so it's not worth optimising. */
8252 for (n = 0; n < argc; n++)
8254 char *old = prepended;
8255 /* Anything that isn't an option is a full path to an output
8256 file; pass it through if it ends in '.a'. Among options,
8258 if (argv[n][0] == '-' && argv[n][1] == 'l')
8260 const char *lopt = argv[n] + 2;
8261 /* Handle both joined and non-joined -l options. If for any
8262 reason there's a trailing -l with no joined or following
8263 arg just discard it. */
8264 if (!*lopt && ++n >= argc)
8268 prepended = concat (prepended, "-plugin-opt=-pass-through=-l",
8271 else if (!strcmp (".a", argv[n] + strlen (argv[n]) - 2))
8273 prepended = concat (prepended, "-plugin-opt=-pass-through=",
8274 argv[n], " ", NULL);
8276 if (prepended != old)