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:
441 %[Spec] as above, but put __ around -D arguments
443 The conditional text X in a %{S:X} or similar construct may contain
444 other nested % constructs or spaces, or even newlines. They are
445 processed as usual, as described above. Trailing white space in X is
446 ignored. White space may also appear anywhere on the left side of the
447 colon in these constructs, except between . or * and the corresponding
450 The -O, -f, -m, and -W switches are handled specifically in these
451 constructs. If another value of -O or the negated form of a -f, -m, or
452 -W switch is found later in the command line, the earlier switch
453 value is ignored, except with {S*} where S is just one letter; this
454 passes all matching options.
456 The character | at the beginning of the predicate text is used to indicate
457 that a command should be piped to the following command, but only if -pipe
460 Note that it is built into GCC which switches take arguments and which
461 do not. You might think it would be useful to generalize this to
462 allow each compiler's spec to say which switches take arguments. But
463 this cannot be done in a consistent fashion. GCC cannot even decide
464 which input files have been specified without knowing which switches
465 take arguments, and it must know which input files to compile in order
466 to tell which compilers to run.
468 GCC also knows implicitly that arguments starting in `-l' are to be
469 treated as compiler output files, and passed to the linker in their
470 proper position among the other output files. */
472 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
474 /* config.h can define ASM_SPEC to provide extra args to the assembler
475 or extra switch-translations. */
480 /* config.h can define ASM_FINAL_SPEC to run a post processor after
481 the assembler has run. */
482 #ifndef ASM_FINAL_SPEC
483 #define ASM_FINAL_SPEC ""
486 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
487 or extra switch-translations. */
492 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
493 or extra switch-translations. */
498 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
499 or extra switch-translations. */
501 #define CC1PLUS_SPEC ""
504 /* config.h can define LINK_SPEC to provide extra args to the linker
505 or extra switch-translations. */
510 /* config.h can define LIB_SPEC to override the default libraries. */
512 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
517 /* XXX: valid only for GNU ld */
518 /* XXX: should exactly match hooks provided by libmudflap.a */
519 #define MFWRAP_SPEC " %{static: %{fmudflap|fmudflapth: \
520 --wrap=malloc --wrap=free --wrap=calloc --wrap=realloc\
521 --wrap=mmap --wrap=munmap --wrap=alloca\
522 } %{fmudflapth: --wrap=pthread_create\
523 }} %{fmudflap|fmudflapth: --wrap=main}"
526 #define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}"
529 /* When using -fsplit-stack we need to wrap pthread_create, in order
530 to initialize the stack guard. We always use wrapping, rather than
531 shared library ordering, and we keep the wrapper function in
532 libgcc. This is not yet a real spec, though it could become one;
533 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping
534 only works with GNU ld and gold. FIXME: This is incompatible with
535 -fmudflap when linking statically, which wants to do its own
537 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}"
539 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
542 #if defined(REAL_LIBGCC_SPEC)
543 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
544 #elif defined(LINK_LIBGCC_SPECIAL_1)
545 /* Have gcc do the search for libgcc.a. */
546 #define LIBGCC_SPEC "libgcc.a%s"
548 #define LIBGCC_SPEC "-lgcc"
552 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
553 #ifndef STARTFILE_SPEC
554 #define STARTFILE_SPEC \
555 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
558 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
560 #define ENDFILE_SPEC ""
564 #define LINKER_NAME "collect2"
567 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
568 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
573 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
575 #ifndef ASM_DEBUG_SPEC
576 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
577 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
578 # define ASM_DEBUG_SPEC \
579 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
580 ? "%{!g0:%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}}" ASM_MAP \
581 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
583 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
584 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
586 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
587 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
591 #ifndef ASM_DEBUG_SPEC
592 # define ASM_DEBUG_SPEC ""
595 /* Here is the spec for running the linker, after compiling all files. */
597 /* This is overridable by the target in case they need to specify the
598 -lgcc and -lc order specially, yet not require them to override all
599 of LINK_COMMAND_SPEC. */
600 #ifndef LINK_GCC_C_SEQUENCE_SPEC
601 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
604 #ifndef LINK_SSP_SPEC
605 #ifdef TARGET_LIBC_PROVIDES_SSP
606 #define LINK_SSP_SPEC "%{fstack-protector:}"
608 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}"
612 #ifndef LINK_PIE_SPEC
614 #define LINK_PIE_SPEC "%{pie:-pie} "
616 #define LINK_PIE_SPEC "%{pie:} "
620 #ifndef LINK_BUILDID_SPEC
621 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
622 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
626 /* Conditional to test whether the LTO plugin is used or not.
627 FIXME: For slim LTO we will need to enable plugin unconditionally. This
628 still cause problems with PLUGIN_LD != LD and when plugin is built but
629 not useable. For GCC 4.6 we don't support slim LTO and thus we can enable
630 plugin only when LTO is enabled. We still honor explicit
631 -fuse-linker-plugin if the linker used understands -plugin. */
633 /* The linker has some plugin support. */
634 #if HAVE_LTO_PLUGIN > 0
635 /* The linker used has full plugin support, use LTO plugin by default. */
636 #if HAVE_LTO_PLUGIN == 2
637 #define PLUGIN_COND "!fno-use-linker-plugin:%{flto|flto=*|fuse-linker-plugin"
638 #define PLUGIN_COND_CLOSE "}"
640 /* The linker used has limited plugin support, use LTO plugin with explicit
641 -fuse-linker-plugin. */
642 #define PLUGIN_COND "fuse-linker-plugin"
643 #define PLUGIN_COND_CLOSE ""
645 #define LINK_PLUGIN_SPEC \
647 -plugin %(linker_plugin_file) \
648 -plugin-opt=%(lto_wrapper) \
649 -plugin-opt=-fresolution=%u.res \
650 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
653 /* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */
654 #define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\
655 %e-fuse-linker-plugin is not supported in this configuration}"
659 /* -u* was put back because both BSD and SysV seem to support it. */
660 /* %{static:} simply prevents an error message if the target machine
661 doesn't handle -static. */
662 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
663 scripts which exist in user specified directories, or in standard
665 /* We pass any -flto flags on to the linker, which is expected
666 to understand them. In practice, this means it had better be collect2. */
667 /* %{e*} includes -export-dynamic; see comment in common.opt. */
668 #ifndef LINK_COMMAND_SPEC
669 #define LINK_COMMAND_SPEC "\
670 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
673 "%{flto|flto=*:%<fcompare-debug*} \
674 %{flto} %{flto=*} %l " LINK_PIE_SPEC \
675 "%X %{o*} %{e*} %{N} %{n} %{r}\
676 %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}}\
677 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
678 %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
679 %(mflib) " STACK_SPLIT_SPEC "\
680 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov}\
681 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
682 %{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}"
685 #ifndef LINK_LIBGCC_SPEC
686 /* Generate -L options for startfile prefix list. */
687 # define LINK_LIBGCC_SPEC "%D"
690 #ifndef STARTFILE_PREFIX_SPEC
691 # define STARTFILE_PREFIX_SPEC ""
695 # define SYSROOT_SPEC "--sysroot=%R"
698 #ifndef SYSROOT_SUFFIX_SPEC
699 # define SYSROOT_SUFFIX_SPEC ""
702 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
703 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
706 static const char *asm_debug;
707 static const char *cpp_spec = CPP_SPEC;
708 static const char *cc1_spec = CC1_SPEC;
709 static const char *cc1plus_spec = CC1PLUS_SPEC;
710 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
711 static const char *link_ssp_spec = LINK_SSP_SPEC;
712 static const char *asm_spec = ASM_SPEC;
713 static const char *asm_final_spec = ASM_FINAL_SPEC;
714 static const char *link_spec = LINK_SPEC;
715 static const char *lib_spec = LIB_SPEC;
716 static const char *mfwrap_spec = MFWRAP_SPEC;
717 static const char *mflib_spec = MFLIB_SPEC;
718 static const char *link_gomp_spec = "";
719 static const char *libgcc_spec = LIBGCC_SPEC;
720 static const char *endfile_spec = ENDFILE_SPEC;
721 static const char *startfile_spec = STARTFILE_SPEC;
722 static const char *linker_name_spec = LINKER_NAME;
723 static const char *linker_plugin_file_spec = "";
724 static const char *lto_wrapper_spec = "";
725 static const char *lto_gcc_spec = "";
726 static const char *link_command_spec = LINK_COMMAND_SPEC;
727 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
728 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
729 static const char *sysroot_spec = SYSROOT_SPEC;
730 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
731 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_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) or %[specname] in a compiler
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),
1221 #ifdef EXTRA_SPECS /* additional specs needed */
1222 /* Structure to keep track of just the first two args of a spec_list.
1223 That is all that the EXTRA_SPECS macro gives us. */
1226 const char *const name;
1227 const char *const ptr;
1230 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1231 static struct spec_list *extra_specs = (struct spec_list *) 0;
1234 /* List of dynamically allocates specs that have been defined so far. */
1236 static struct spec_list *specs = (struct spec_list *) 0;
1238 /* List of static spec functions. */
1240 static const struct spec_function static_spec_functions[] =
1242 { "getenv", getenv_spec_function },
1243 { "if-exists", if_exists_spec_function },
1244 { "if-exists-else", if_exists_else_spec_function },
1245 { "replace-outfile", replace_outfile_spec_function },
1246 { "remove-outfile", remove_outfile_spec_function },
1247 { "version-compare", version_compare_spec_function },
1248 { "include", include_spec_function },
1249 { "find-file", find_file_spec_function },
1250 { "find-plugindir", find_plugindir_spec_function },
1251 { "print-asm-header", print_asm_header_spec_function },
1252 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function },
1253 { "compare-debug-self-opt", compare_debug_self_opt_spec_function },
1254 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function },
1255 { "pass-through-libs", pass_through_libs_spec_func },
1256 #ifdef EXTRA_SPEC_FUNCTIONS
1257 EXTRA_SPEC_FUNCTIONS
1262 static int processing_spec_function;
1264 /* Add appropriate libgcc specs to OBSTACK, taking into account
1265 various permutations of -shared-libgcc, -shared, and such. */
1267 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1269 #ifndef USE_LD_AS_NEEDED
1270 #define USE_LD_AS_NEEDED 0
1274 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1275 const char *static_name, const char *eh_name)
1279 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}"
1280 "%{!static:%{!static-libgcc:"
1281 #if USE_LD_AS_NEEDED
1282 "%{!shared-libgcc:",
1283 static_name, " --as-needed ", shared_name, " --no-as-needed"
1286 shared_name, "%{!shared: ", static_name, "}"
1290 "%{!shared-libgcc:", static_name, " ", eh_name, "}"
1291 "%{shared-libgcc:", shared_name, " ", static_name, "}"
1295 "%{shared-libgcc:", shared_name, "}"
1296 "%{!shared-libgcc:", static_name, "}"
1299 "%{shared:", shared_name, "}"
1304 obstack_grow (obstack, buf, strlen (buf));
1307 #endif /* ENABLE_SHARED_LIBGCC */
1309 /* Initialize the specs lookup routines. */
1314 struct spec_list *next = (struct spec_list *) 0;
1315 struct spec_list *sl = (struct spec_list *) 0;
1319 return; /* Already initialized. */
1322 fnotice (stderr, "Using built-in specs.\n");
1325 extra_specs = XCNEWVEC (struct spec_list, ARRAY_SIZE (extra_specs_1));
1327 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1329 sl = &extra_specs[i];
1330 sl->name = extra_specs_1[i].name;
1331 sl->ptr = extra_specs_1[i].ptr;
1333 sl->name_len = strlen (sl->name);
1334 sl->ptr_spec = &sl->ptr;
1339 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1341 sl = &static_specs[i];
1346 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1347 /* ??? If neither -shared-libgcc nor --static-libgcc was
1348 seen, then we should be making an educated guess. Some proposed
1349 heuristics for ELF include:
1351 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1352 program will be doing dynamic loading, which will likely
1353 need the shared libgcc.
1355 (2) If "-ldl", then it's also a fair bet that we're doing
1358 (3) For each ET_DYN we're linking against (either through -lfoo
1359 or /some/path/foo.so), check to see whether it or one of
1360 its dependencies depends on a shared libgcc.
1364 If the runtime is fixed to look for program headers instead
1365 of calling __register_frame_info at all, for each object,
1366 use the shared libgcc if any EH symbol referenced.
1368 If crtstuff is fixed to not invoke __register_frame_info
1369 automatically, for each object, use the shared libgcc if
1370 any non-empty unwind section found.
1372 Doing any of this probably requires invoking an external program to
1373 do the actual object file scanning. */
1375 const char *p = libgcc_spec;
1378 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1379 when given the proper command line arguments. */
1382 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1384 init_gcc_specs (&obstack,
1386 #ifdef USE_LIBUNWIND_EXCEPTIONS
1392 #ifdef USE_LIBUNWIND_EXCEPTIONS
1393 # ifdef HAVE_LD_STATIC_DYNAMIC
1394 " %{!static:" LD_STATIC_OPTION "} -lunwind"
1395 " %{!static:" LD_DYNAMIC_OPTION "}"
1405 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1407 /* Ug. We don't know shared library extensions. Hope that
1408 systems that use this form don't do shared libraries. */
1409 init_gcc_specs (&obstack,
1413 #ifdef USE_LIBUNWIND_EXCEPTIONS
1422 obstack_1grow (&obstack, *p);
1423 in_sep = (*p == ' ');
1428 obstack_1grow (&obstack, '\0');
1429 libgcc_spec = XOBFINISH (&obstack, const char *);
1432 #ifdef USE_AS_TRADITIONAL_FORMAT
1433 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1435 static const char tf[] = "--traditional-format ";
1436 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1437 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1438 asm_spec = XOBFINISH (&obstack, const char *);
1442 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \
1443 defined LINKER_HASH_STYLE
1444 # ifdef LINK_BUILDID_SPEC
1445 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1446 obstack_grow (&obstack, LINK_BUILDID_SPEC, sizeof(LINK_BUILDID_SPEC) - 1);
1448 # ifdef LINK_EH_SPEC
1449 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1450 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1452 # ifdef LINKER_HASH_STYLE
1453 /* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had
1456 static const char hash_style[] = "--hash-style=";
1457 obstack_grow (&obstack, hash_style, sizeof(hash_style) - 1);
1458 obstack_grow (&obstack, LINKER_HASH_STYLE, sizeof(LINKER_HASH_STYLE) - 1);
1459 obstack_1grow (&obstack, ' ');
1462 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1463 link_spec = XOBFINISH (&obstack, const char *);
1469 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1470 removed; If the spec starts with a + then SPEC is added to the end of the
1474 set_spec (const char *name, const char *spec)
1476 struct spec_list *sl;
1477 const char *old_spec;
1478 int name_len = strlen (name);
1481 /* If this is the first call, initialize the statically allocated specs. */
1484 struct spec_list *next = (struct spec_list *) 0;
1485 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1487 sl = &static_specs[i];
1494 /* See if the spec already exists. */
1495 for (sl = specs; sl; sl = sl->next)
1496 if (name_len == sl->name_len && !strcmp (sl->name, name))
1501 /* Not found - make it. */
1502 sl = XNEW (struct spec_list);
1503 sl->name = xstrdup (name);
1504 sl->name_len = name_len;
1505 sl->ptr_spec = &sl->ptr;
1507 *(sl->ptr_spec) = "";
1512 old_spec = *(sl->ptr_spec);
1513 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1514 ? concat (old_spec, spec + 1, NULL)
1519 fnotice (stderr, "Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1522 /* Free the old spec. */
1523 if (old_spec && sl->alloc_p)
1524 free (CONST_CAST(char *, old_spec));
1529 /* Accumulate a command (program name and args), and run it. */
1531 typedef const char *const_char_p; /* For DEF_VEC_P. */
1532 DEF_VEC_P(const_char_p);
1533 DEF_VEC_ALLOC_P(const_char_p,heap);
1535 /* Vector of pointers to arguments in the current line of specifications. */
1537 static VEC(const_char_p,heap) *argbuf;
1539 /* Position in the argbuf vector containing the name of the output file
1540 (the value associated with the "-o" flag). */
1542 static int have_o_argbuf_index = 0;
1544 /* Were the options -c, -S or -E passed. */
1545 static int have_c = 0;
1547 /* Was the option -o passed. */
1548 static int have_o = 0;
1550 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1551 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1554 static struct temp_name {
1555 const char *suffix; /* suffix associated with the code. */
1556 int length; /* strlen (suffix). */
1557 int unique; /* Indicates whether %g or %u/%U was used. */
1558 const char *filename; /* associated filename. */
1559 int filename_length; /* strlen (filename). */
1560 struct temp_name *next;
1563 /* Number of commands executed so far. */
1565 static int execution_count;
1567 /* Number of commands that exited with a signal. */
1569 static int signal_count;
1571 /* Allocate the argument vector. */
1576 argbuf = VEC_alloc (const_char_p, heap, 10);
1579 /* Clear out the vector of arguments (after a command is executed). */
1584 VEC_truncate (const_char_p, argbuf, 0);
1587 /* Add one argument to the vector at the end.
1588 This is done when a space is seen or at the end of the line.
1589 If DELETE_ALWAYS is nonzero, the arg is a filename
1590 and the file should be deleted eventually.
1591 If DELETE_FAILURE is nonzero, the arg is a filename
1592 and the file should be deleted if this compilation fails. */
1595 store_arg (const char *arg, int delete_always, int delete_failure)
1597 VEC_safe_push (const_char_p, heap, argbuf, arg);
1599 if (strcmp (arg, "-o") == 0)
1600 have_o_argbuf_index = VEC_length (const_char_p, argbuf);
1601 if (delete_always || delete_failure)
1604 /* If the temporary file we should delete is specified as
1605 part of a joined argument extract the filename. */
1607 && (p = strrchr (arg, '=')))
1609 record_temp_file (arg, delete_always, delete_failure);
1613 /* Load specs from a file name named FILENAME, replacing occurrences of
1614 various different types of line-endings, \r\n, \n\r and just \r, with
1618 load_specs (const char *filename)
1622 struct stat statbuf;
1629 fnotice (stderr, "Reading specs from %s\n", filename);
1631 /* Open and stat the file. */
1632 desc = open (filename, O_RDONLY, 0);
1634 pfatal_with_name (filename);
1635 if (stat (filename, &statbuf) < 0)
1636 pfatal_with_name (filename);
1638 /* Read contents of file into BUFFER. */
1639 buffer = XNEWVEC (char, statbuf.st_size + 1);
1640 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1642 pfatal_with_name (filename);
1643 buffer[readlen] = 0;
1646 specs = XNEWVEC (char, readlen + 1);
1648 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1654 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1656 else if (*(buffer_p + 1) == '\n') /* \r\n */
1670 /* Read compilation specs from a file named FILENAME,
1671 replacing the default ones.
1673 A suffix which starts with `*' is a definition for
1674 one of the machine-specific sub-specs. The "suffix" should be
1675 *asm, *cc1, *cpp, *link, *startfile, etc.
1676 The corresponding spec is stored in asm_spec, etc.,
1677 rather than in the `compilers' vector.
1679 Anything invalid in the file is a fatal error. */
1682 read_specs (const char *filename, int main_p)
1687 buffer = load_specs (filename);
1689 /* Scan BUFFER for specs, putting them in the vector. */
1695 char *in, *out, *p1, *p2, *p3;
1697 /* Advance P in BUFFER to the next nonblank nocomment line. */
1698 p = skip_whitespace (p);
1702 /* Is this a special command that starts with '%'? */
1703 /* Don't allow this for the main specs file, since it would
1704 encourage people to overwrite it. */
1705 if (*p == '%' && !main_p)
1708 while (*p && *p != '\n')
1714 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1715 && (p1[sizeof "%include" - 1] == ' '
1716 || p1[sizeof "%include" - 1] == '\t'))
1720 p1 += sizeof ("%include");
1721 while (*p1 == ' ' || *p1 == '\t')
1724 if (*p1++ != '<' || p[-2] != '>')
1725 fatal_error ("specs %%include syntax malformed after "
1727 (long) (p1 - buffer + 1));
1730 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1731 read_specs (new_filename ? new_filename : p1, FALSE);
1734 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1735 && (p1[sizeof "%include_noerr" - 1] == ' '
1736 || p1[sizeof "%include_noerr" - 1] == '\t'))
1740 p1 += sizeof "%include_noerr";
1741 while (*p1 == ' ' || *p1 == '\t')
1744 if (*p1++ != '<' || p[-2] != '>')
1745 fatal_error ("specs %%include syntax malformed after "
1747 (long) (p1 - buffer + 1));
1750 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1752 read_specs (new_filename, FALSE);
1753 else if (verbose_flag)
1754 fnotice (stderr, "could not find specs file %s\n", p1);
1757 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1758 && (p1[sizeof "%rename" - 1] == ' '
1759 || p1[sizeof "%rename" - 1] == '\t'))
1762 struct spec_list *sl;
1763 struct spec_list *newsl;
1765 /* Get original name. */
1766 p1 += sizeof "%rename";
1767 while (*p1 == ' ' || *p1 == '\t')
1770 if (! ISALPHA ((unsigned char) *p1))
1771 fatal_error ("specs %%rename syntax malformed after "
1773 (long) (p1 - buffer));
1776 while (*p2 && !ISSPACE ((unsigned char) *p2))
1779 if (*p2 != ' ' && *p2 != '\t')
1780 fatal_error ("specs %%rename syntax malformed after "
1782 (long) (p2 - buffer));
1786 while (*p2 == ' ' || *p2 == '\t')
1789 if (! ISALPHA ((unsigned char) *p2))
1790 fatal_error ("specs %%rename syntax malformed after "
1792 (long) (p2 - buffer));
1794 /* Get new spec name. */
1796 while (*p3 && !ISSPACE ((unsigned char) *p3))
1800 fatal_error ("specs %%rename syntax malformed after "
1802 (long) (p3 - buffer));
1805 for (sl = specs; sl; sl = sl->next)
1806 if (name_len == sl->name_len && !strcmp (sl->name, p1))
1810 fatal_error ("specs %s spec was not found to be renamed", p1);
1812 if (strcmp (p1, p2) == 0)
1815 for (newsl = specs; newsl; newsl = newsl->next)
1816 if (strcmp (newsl->name, p2) == 0)
1817 fatal_error ("%s: attempt to rename spec %qs to "
1818 "already defined spec %qs",
1823 fnotice (stderr, "rename spec %s to %s\n", p1, p2);
1825 fnotice (stderr, "spec is '%s'\n\n", *(sl->ptr_spec));
1829 set_spec (p2, *(sl->ptr_spec));
1831 free (CONST_CAST (char *, *(sl->ptr_spec)));
1833 *(sl->ptr_spec) = "";
1838 fatal_error ("specs unknown %% command after %ld characters",
1839 (long) (p1 - buffer));
1842 /* Find the colon that should end the suffix. */
1844 while (*p1 && *p1 != ':' && *p1 != '\n')
1847 /* The colon shouldn't be missing. */
1849 fatal_error ("specs file malformed after %ld characters",
1850 (long) (p1 - buffer));
1852 /* Skip back over trailing whitespace. */
1854 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
1857 /* Copy the suffix to a string. */
1858 suffix = save_string (p, p2 - p);
1859 /* Find the next line. */
1860 p = skip_whitespace (p1 + 1);
1862 fatal_error ("specs file malformed after %ld characters",
1863 (long) (p - buffer));
1866 /* Find next blank line or end of string. */
1867 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
1870 /* Specs end at the blank line and do not include the newline. */
1871 spec = save_string (p, p1 - p);
1874 /* Delete backslash-newline sequences from the spec. */
1879 if (in[0] == '\\' && in[1] == '\n')
1881 else if (in[0] == '#')
1882 while (*in && *in != '\n')
1890 if (suffix[0] == '*')
1892 if (! strcmp (suffix, "*link_command"))
1893 link_command_spec = spec;
1895 set_spec (suffix + 1, spec);
1899 /* Add this pair to the vector. */
1901 = XRESIZEVEC (struct compiler, compilers, n_compilers + 2);
1903 compilers[n_compilers].suffix = suffix;
1904 compilers[n_compilers].spec = spec;
1906 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
1910 link_command_spec = spec;
1913 if (link_command_spec == 0)
1914 fatal_error ("spec file has no spec for linking");
1917 /* Record the names of temporary files we tell compilers to write,
1918 and delete them at the end of the run. */
1920 /* This is the common prefix we use to make temp file names.
1921 It is chosen once for each run of this program.
1922 It is substituted into a spec by %g or %j.
1923 Thus, all temp file names contain this prefix.
1924 In practice, all temp file names start with this prefix.
1926 This prefix comes from the envvar TMPDIR if it is defined;
1927 otherwise, from the P_tmpdir macro if that is defined;
1928 otherwise, in /usr/tmp or /tmp;
1929 or finally the current directory if all else fails. */
1931 static const char *temp_filename;
1933 /* Length of the prefix. */
1935 static int temp_filename_length;
1937 /* Define the list of temporary files to delete. */
1942 struct temp_file *next;
1945 /* Queue of files to delete on success or failure of compilation. */
1946 static struct temp_file *always_delete_queue;
1947 /* Queue of files to delete on failure of compilation. */
1948 static struct temp_file *failure_delete_queue;
1950 /* Record FILENAME as a file to be deleted automatically.
1951 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
1952 otherwise delete it in any case.
1953 FAIL_DELETE nonzero means delete it if a compilation step fails;
1954 otherwise delete it in any case. */
1957 record_temp_file (const char *filename, int always_delete, int fail_delete)
1959 char *const name = xstrdup (filename);
1963 struct temp_file *temp;
1964 for (temp = always_delete_queue; temp; temp = temp->next)
1965 if (! filename_cmp (name, temp->name))
1968 temp = XNEW (struct temp_file);
1969 temp->next = always_delete_queue;
1971 always_delete_queue = temp;
1978 struct temp_file *temp;
1979 for (temp = failure_delete_queue; temp; temp = temp->next)
1980 if (! filename_cmp (name, temp->name))
1983 temp = XNEW (struct temp_file);
1984 temp->next = failure_delete_queue;
1986 failure_delete_queue = temp;
1992 /* Delete all the temporary files whose names we previously recorded. */
1994 #ifndef DELETE_IF_ORDINARY
1995 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
1998 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
1999 if (unlink (NAME) < 0) \
2001 perror_with_name (NAME); \
2006 delete_if_ordinary (const char *name)
2012 printf ("Delete %s? (y or n) ", name);
2016 while ((c = getchar ()) != '\n' && c != EOF)
2019 if (i == 'y' || i == 'Y')
2021 DELETE_IF_ORDINARY (name, st, verbose_flag);
2025 delete_temp_files (void)
2027 struct temp_file *temp;
2029 for (temp = always_delete_queue; temp; temp = temp->next)
2030 delete_if_ordinary (temp->name);
2031 always_delete_queue = 0;
2034 /* Delete all the files to be deleted on error. */
2037 delete_failure_queue (void)
2039 struct temp_file *temp;
2041 for (temp = failure_delete_queue; temp; temp = temp->next)
2042 delete_if_ordinary (temp->name);
2046 clear_failure_queue (void)
2048 failure_delete_queue = 0;
2051 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2053 If DO_MULTI is true iterate over the paths twice, first with multilib
2054 suffix then without, otherwise iterate over the paths once without
2055 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2056 to avoid visiting the same path twice, but we could do better. For
2057 instance, /usr/lib/../lib is considered different from /usr/lib.
2058 At least EXTRA_SPACE chars past the end of the path passed to
2059 CALLBACK are available for use by the callback.
2060 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2062 Returns the value returned by CALLBACK. */
2065 for_each_path (const struct path_prefix *paths,
2068 void *(*callback) (char *, void *),
2069 void *callback_info)
2071 struct prefix_list *pl;
2072 const char *multi_dir = NULL;
2073 const char *multi_os_dir = NULL;
2074 const char *multi_suffix;
2075 const char *just_multi_suffix;
2078 bool skip_multi_dir = false;
2079 bool skip_multi_os_dir = false;
2081 multi_suffix = machine_suffix;
2082 just_multi_suffix = just_machine_suffix;
2083 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0)
2085 multi_dir = concat (multilib_dir, dir_separator_str, NULL);
2086 multi_suffix = concat (multi_suffix, multi_dir, NULL);
2087 just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL);
2089 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0)
2090 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL);
2094 size_t multi_dir_len = 0;
2095 size_t multi_os_dir_len = 0;
2097 size_t just_suffix_len;
2101 multi_dir_len = strlen (multi_dir);
2103 multi_os_dir_len = strlen (multi_os_dir);
2104 suffix_len = strlen (multi_suffix);
2105 just_suffix_len = strlen (just_multi_suffix);
2109 len = paths->max_len + extra_space + 1;
2110 if (suffix_len > multi_os_dir_len)
2113 len += multi_os_dir_len;
2114 path = XNEWVEC (char, len);
2117 for (pl = paths->plist; pl != 0; pl = pl->next)
2119 len = strlen (pl->prefix);
2120 memcpy (path, pl->prefix, len);
2122 /* Look first in MACHINE/VERSION subdirectory. */
2123 if (!skip_multi_dir)
2125 memcpy (path + len, multi_suffix, suffix_len + 1);
2126 ret = callback (path, callback_info);
2131 /* Some paths are tried with just the machine (ie. target)
2132 subdir. This is used for finding as, ld, etc. */
2134 && pl->require_machine_suffix == 2)
2136 memcpy (path + len, just_multi_suffix, just_suffix_len + 1);
2137 ret = callback (path, callback_info);
2142 /* Now try the base path. */
2143 if (!pl->require_machine_suffix
2144 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir))
2146 const char *this_multi;
2147 size_t this_multi_len;
2149 if (pl->os_multilib)
2151 this_multi = multi_os_dir;
2152 this_multi_len = multi_os_dir_len;
2156 this_multi = multi_dir;
2157 this_multi_len = multi_dir_len;
2161 memcpy (path + len, this_multi, this_multi_len + 1);
2165 ret = callback (path, callback_info);
2173 if (multi_dir == NULL && multi_os_dir == NULL)
2176 /* Run through the paths again, this time without multilibs.
2177 Don't repeat any we have already seen. */
2180 free (CONST_CAST (char *, multi_dir));
2182 free (CONST_CAST (char *, multi_suffix));
2183 multi_suffix = machine_suffix;
2184 free (CONST_CAST (char *, just_multi_suffix));
2185 just_multi_suffix = just_machine_suffix;
2188 skip_multi_dir = true;
2191 free (CONST_CAST (char *, multi_os_dir));
2192 multi_os_dir = NULL;
2195 skip_multi_os_dir = true;
2200 free (CONST_CAST (char *, multi_dir));
2201 free (CONST_CAST (char *, multi_suffix));
2202 free (CONST_CAST (char *, just_multi_suffix));
2205 free (CONST_CAST (char *, multi_os_dir));
2211 /* Callback for build_search_list. Adds path to obstack being built. */
2213 struct add_to_obstack_info {
2220 add_to_obstack (char *path, void *data)
2222 struct add_to_obstack_info *info = (struct add_to_obstack_info *) data;
2224 if (info->check_dir && !is_directory (path, false))
2227 if (!info->first_time)
2228 obstack_1grow (info->ob, PATH_SEPARATOR);
2230 obstack_grow (info->ob, path, strlen (path));
2232 info->first_time = false;
2236 /* Add or change the value of an environment variable, outputting the
2237 change to standard error if in verbose mode. */
2239 xputenv (const char *string)
2242 fnotice (stderr, "%s\n", string);
2243 putenv (CONST_CAST (char *, string));
2246 /* Build a list of search directories from PATHS.
2247 PREFIX is a string to prepend to the list.
2248 If CHECK_DIR_P is true we ensure the directory exists.
2249 If DO_MULTI is true, multilib paths are output first, then
2251 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2252 It is also used by the --print-search-dirs flag. */
2255 build_search_list (const struct path_prefix *paths, const char *prefix,
2256 bool check_dir, bool do_multi)
2258 struct add_to_obstack_info info;
2260 info.ob = &collect_obstack;
2261 info.check_dir = check_dir;
2262 info.first_time = true;
2264 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2265 obstack_1grow (&collect_obstack, '=');
2267 for_each_path (paths, do_multi, 0, add_to_obstack, &info);
2269 obstack_1grow (&collect_obstack, '\0');
2270 return XOBFINISH (&collect_obstack, char *);
2273 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2277 putenv_from_prefixes (const struct path_prefix *paths, const char *env_var,
2280 xputenv (build_search_list (paths, env_var, true, do_multi));
2283 /* Check whether NAME can be accessed in MODE. This is like access,
2284 except that it never considers directories to be executable. */
2287 access_check (const char *name, int mode)
2293 if (stat (name, &st) < 0
2294 || S_ISDIR (st.st_mode))
2298 return access (name, mode);
2301 /* Callback for find_a_file. Appends the file name to the directory
2302 path. If the resulting file exists in the right mode, return the
2303 full pathname to the file. */
2305 struct file_at_path_info {
2314 file_at_path (char *path, void *data)
2316 struct file_at_path_info *info = (struct file_at_path_info *) data;
2317 size_t len = strlen (path);
2319 memcpy (path + len, info->name, info->name_len);
2320 len += info->name_len;
2322 /* Some systems have a suffix for executable files.
2323 So try appending that first. */
2324 if (info->suffix_len)
2326 memcpy (path + len, info->suffix, info->suffix_len + 1);
2327 if (access_check (path, info->mode) == 0)
2332 if (access_check (path, info->mode) == 0)
2338 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2339 access to check permissions. If DO_MULTI is true, search multilib
2340 paths then non-multilib paths, otherwise do not search multilib paths.
2341 Return 0 if not found, otherwise return its name, allocated with malloc. */
2344 find_a_file (const struct path_prefix *pprefix, const char *name, int mode,
2347 struct file_at_path_info info;
2349 #ifdef DEFAULT_ASSEMBLER
2350 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2351 return xstrdup (DEFAULT_ASSEMBLER);
2354 #ifdef DEFAULT_LINKER
2355 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2356 return xstrdup (DEFAULT_LINKER);
2359 /* Determine the filename to execute (special case for absolute paths). */
2361 if (IS_ABSOLUTE_PATH (name))
2363 if (access (name, mode) == 0)
2364 return xstrdup (name);
2370 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "";
2371 info.name_len = strlen (info.name);
2372 info.suffix_len = strlen (info.suffix);
2375 return (char*) for_each_path (pprefix, do_multi,
2376 info.name_len + info.suffix_len,
2377 file_at_path, &info);
2380 /* Ranking of prefixes in the sort list. -B prefixes are put before
2383 enum path_prefix_priority
2385 PREFIX_PRIORITY_B_OPT,
2386 PREFIX_PRIORITY_LAST
2389 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2390 order according to PRIORITY. Within each PRIORITY, new entries are
2393 If WARN is nonzero, we will warn if no file is found
2394 through this prefix. WARN should point to an int
2395 which will be set to 1 if this entry is used.
2397 COMPONENT is the value to be passed to update_path.
2399 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2400 the complete value of machine_suffix.
2401 2 means try both machine_suffix and just_machine_suffix. */
2404 add_prefix (struct path_prefix *pprefix, const char *prefix,
2405 const char *component, /* enum prefix_priority */ int priority,
2406 int require_machine_suffix, int os_multilib)
2408 struct prefix_list *pl, **prev;
2411 for (prev = &pprefix->plist;
2412 (*prev) != NULL && (*prev)->priority <= priority;
2413 prev = &(*prev)->next)
2416 /* Keep track of the longest prefix. */
2418 prefix = update_path (prefix, component);
2419 len = strlen (prefix);
2420 if (len > pprefix->max_len)
2421 pprefix->max_len = len;
2423 pl = XNEW (struct prefix_list);
2424 pl->prefix = prefix;
2425 pl->require_machine_suffix = require_machine_suffix;
2426 pl->priority = priority;
2427 pl->os_multilib = os_multilib;
2429 /* Insert after PREV. */
2434 /* Same as add_prefix, but prepending target_system_root to prefix. */
2435 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2437 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2438 const char *component,
2439 /* enum prefix_priority */ int priority,
2440 int require_machine_suffix, int os_multilib)
2442 if (!IS_ABSOLUTE_PATH (prefix))
2443 fatal_error ("system path %qs is not absolute", prefix);
2445 if (target_system_root)
2447 if (target_sysroot_suffix)
2448 prefix = concat (target_sysroot_suffix, prefix, NULL);
2449 prefix = concat (target_system_root, prefix, NULL);
2451 /* We have to override this because GCC's notion of sysroot
2452 moves along with GCC. */
2456 add_prefix (pprefix, prefix, component, priority,
2457 require_machine_suffix, os_multilib);
2460 /* Execute the command specified by the arguments on the current line of spec.
2461 When using pipes, this includes several piped-together commands
2462 with `|' between them.
2464 Return 0 if successful, -1 if failed. */
2470 int n_commands; /* # of command. */
2472 struct pex_obj *pex;
2475 const char *prog; /* program name. */
2476 const char **argv; /* vector of args. */
2480 struct command *commands; /* each command buffer with above info. */
2482 gcc_assert (!processing_spec_function);
2486 string = find_a_file (&exec_prefixes,
2487 VEC_index (const_char_p, argbuf, 0), X_OK, false);
2489 VEC_replace (const_char_p, argbuf, 0, string);
2490 insert_wrapper (wrapper_string);
2493 /* Count # of piped commands. */
2494 for (n_commands = 1, i = 0; VEC_iterate (const_char_p, argbuf, i, arg); i++)
2495 if (strcmp (arg, "|") == 0)
2498 /* Get storage for each command. */
2499 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2501 /* Split argbuf into its separate piped processes,
2502 and record info about each one.
2503 Also search for the programs that are to be run. */
2505 VEC_safe_push (const_char_p, heap, argbuf, 0);
2507 commands[0].prog = VEC_index (const_char_p, argbuf, 0); /* first command. */
2508 commands[0].argv = VEC_address (const_char_p, argbuf);
2510 if (!wrapper_string)
2512 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false);
2513 commands[0].argv[0] = (string) ? string : commands[0].argv[0];
2516 for (n_commands = 1, i = 0; VEC_iterate (const_char_p, argbuf, i, arg); i++)
2517 if (arg && strcmp (arg, "|") == 0)
2518 { /* each command. */
2519 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2520 fatal_error ("-pipe not supported");
2522 VEC_replace (const_char_p, argbuf, i, 0); /* Termination of
2524 commands[n_commands].prog = VEC_index (const_char_p, argbuf, i + 1);
2525 commands[n_commands].argv
2526 = &(VEC_address (const_char_p, argbuf))[i + 1];
2527 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2530 commands[n_commands].argv[0] = string;
2534 /* If -v, print what we are about to do, and maybe query. */
2538 /* For help listings, put a blank line between sub-processes. */
2539 if (print_help_list)
2540 fputc ('\n', stderr);
2542 /* Print each piped command as a separate line. */
2543 for (i = 0; i < n_commands; i++)
2545 const char *const *j;
2547 if (verbose_only_flag)
2549 for (j = commands[i].argv; *j; j++)
2552 for (p = *j; *p; ++p)
2553 if (!ISALNUM ((unsigned char) *p)
2554 && *p != '_' && *p != '/' && *p != '-' && *p != '.')
2558 fprintf (stderr, " \"");
2559 for (p = *j; *p; ++p)
2561 if (*p == '"' || *p == '\\' || *p == '$')
2562 fputc ('\\', stderr);
2565 fputc ('"', stderr);
2567 /* If it's empty, print "". */
2569 fprintf (stderr, " \"\"");
2571 fprintf (stderr, " %s", *j);
2575 for (j = commands[i].argv; *j; j++)
2576 /* If it's empty, print "". */
2578 fprintf (stderr, " \"\"");
2580 fprintf (stderr, " %s", *j);
2582 /* Print a pipe symbol after all but the last command. */
2583 if (i + 1 != n_commands)
2584 fprintf (stderr, " |");
2585 fprintf (stderr, "\n");
2588 if (verbose_only_flag != 0)
2590 /* verbose_only_flag should act as if the spec was
2591 executed, so increment execution_count before
2592 returning. This prevents spurious warnings about
2593 unused linker input files, etc. */
2598 fnotice (stderr, "\nGo ahead? (y or n) ");
2602 while (getchar () != '\n')
2605 if (i != 'y' && i != 'Y')
2610 #ifdef ENABLE_VALGRIND_CHECKING
2611 /* Run the each command through valgrind. To simplify prepending the
2612 path to valgrind and the option "-q" (for quiet operation unless
2613 something triggers), we allocate a separate argv array. */
2615 for (i = 0; i < n_commands; i++)
2621 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2624 argv = XALLOCAVEC (const char *, argc + 3);
2626 argv[0] = VALGRIND_PATH;
2628 for (j = 2; j < argc + 2; j++)
2629 argv[j] = commands[i].argv[j - 2];
2632 commands[i].argv = argv;
2633 commands[i].prog = argv[0];
2637 /* Run each piped subprocess. */
2639 pex = pex_init (PEX_USE_PIPES | ((report_times || report_times_to_file)
2640 ? PEX_RECORD_TIMES : 0),
2641 progname, temp_filename);
2643 fatal_error ("pex_init failed: %m");
2645 for (i = 0; i < n_commands; i++)
2649 const char *string = commands[i].argv[0];
2651 errmsg = pex_run (pex,
2652 ((i + 1 == n_commands ? PEX_LAST : 0)
2653 | (string == commands[i].prog ? PEX_SEARCH : 0)),
2654 string, CONST_CAST (char **, commands[i].argv),
2659 fatal_error (errmsg);
2663 pfatal_with_name (errmsg);
2667 if (string != commands[i].prog)
2668 free (CONST_CAST (char *, string));
2673 /* Wait for all the subprocesses to finish. */
2677 struct pex_time *times = NULL;
2680 statuses = (int *) alloca (n_commands * sizeof (int));
2681 if (!pex_get_status (pex, n_commands, statuses))
2682 fatal_error ("failed to get exit status: %m");
2684 if (report_times || report_times_to_file)
2686 times = (struct pex_time *) alloca (n_commands * sizeof (struct pex_time));
2687 if (!pex_get_times (pex, n_commands, times))
2688 fatal_error ("failed to get process times: %m");
2693 for (i = 0; i < n_commands; ++i)
2695 int status = statuses[i];
2697 if (WIFSIGNALED (status))
2700 /* SIGPIPE is a special case. It happens in -pipe mode
2701 when the compiler dies before the preprocessor is done,
2702 or the assembler dies before the compiler is done.
2703 There's generally been an error already, and this is
2704 just fallout. So don't generate another error unless
2705 we would otherwise have succeeded. */
2706 if (WTERMSIG (status) == SIGPIPE
2707 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2714 internal_error ("%s (program %s)",
2715 strsignal (WTERMSIG (status)), commands[i].prog);
2717 else if (WIFEXITED (status)
2718 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2720 if (WEXITSTATUS (status) > greatest_status)
2721 greatest_status = WEXITSTATUS (status);
2725 if (report_times || report_times_to_file)
2727 struct pex_time *pt = ×[i];
2730 ut = ((double) pt->user_seconds
2731 + (double) pt->user_microseconds / 1.0e6);
2732 st = ((double) pt->system_seconds
2733 + (double) pt->system_microseconds / 1.0e6);
2738 fnotice (stderr, "# %s %.2f %.2f\n",
2739 commands[i].prog, ut, st);
2741 if (report_times_to_file)
2744 const char *const *j;
2746 fprintf (report_times_to_file, "%g %g", ut, st);
2748 for (j = &commands[i].prog; *j; j = &commands[i].argv[++c])
2751 for (p = *j; *p; ++p)
2752 if (*p == '"' || *p == '\\' || *p == '$'
2758 fprintf (report_times_to_file, " \"");
2759 for (p = *j; *p; ++p)
2761 if (*p == '"' || *p == '\\' || *p == '$')
2762 fputc ('\\', report_times_to_file);
2763 fputc (*p, report_times_to_file);
2765 fputc ('"', report_times_to_file);
2768 fprintf (report_times_to_file, " %s", *j);
2771 fputc ('\n', report_times_to_file);
2781 /* Find all the switches given to us
2782 and make a vector describing them.
2783 The elements of the vector are strings, one per switch given.
2784 If a switch uses following arguments, then the `part1' field
2785 is the switch itself and the `args' field
2786 is a null-terminated vector containing the following arguments.
2787 Bits in the `live_cond' field are:
2788 SWITCH_LIVE to indicate this switch is true in a conditional spec.
2789 SWITCH_FALSE to indicate this switch is overridden by a later switch.
2790 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
2791 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
2792 in all do_spec calls afterwards. Used for %<S from self specs.
2793 The `validated' field is nonzero if any spec has looked at this switch;
2794 if it remains zero at the end of the run, it must be meaningless. */
2796 #define SWITCH_LIVE (1 << 0)
2797 #define SWITCH_FALSE (1 << 1)
2798 #define SWITCH_IGNORE (1 << 2)
2799 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
2800 #define SWITCH_KEEP_FOR_GCC (1 << 4)
2806 unsigned int live_cond;
2807 unsigned char validated;
2808 unsigned char ordering;
2811 static struct switchstr *switches;
2813 static int n_switches;
2815 static int n_switches_alloc;
2817 /* Set to zero if -fcompare-debug is disabled, positive if it's
2818 enabled and we're running the first compilation, negative if it's
2819 enabled and we're running the second compilation. For most of the
2820 time, it's in the range -1..1, but it can be temporarily set to 2
2821 or 3 to indicate that the -fcompare-debug flags didn't come from
2822 the command-line, but rather from the GCC_COMPARE_DEBUG environment
2823 variable, until a synthesized -fcompare-debug flag is added to the
2827 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
2828 int compare_debug_second;
2830 /* Set to the flags that should be passed to the second compilation in
2831 a -fcompare-debug compilation. */
2832 const char *compare_debug_opt;
2834 static struct switchstr *switches_debug_check[2];
2836 static int n_switches_debug_check[2];
2838 static int n_switches_alloc_debug_check[2];
2840 static char *debug_check_temp_file[2];
2842 /* Language is one of three things:
2844 1) The name of a real programming language.
2845 2) NULL, indicating that no one has figured out
2847 3) '*', indicating that the file should be passed
2852 const char *language;
2853 struct compiler *incompiler;
2858 /* Also a vector of input files specified. */
2860 static struct infile *infiles;
2864 static int n_infiles_alloc;
2866 /* True if multiple input files are being compiled to a single
2869 static bool combine_inputs;
2871 /* This counts the number of libraries added by lang_specific_driver, so that
2872 we can tell if there were any user supplied any files or libraries. */
2874 static int added_libraries;
2876 /* And a vector of corresponding output files is made up later. */
2878 const char **outfiles;
2880 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2882 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2883 is true if we should look for an executable suffix. DO_OBJ
2884 is true if we should look for an object suffix. */
2887 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
2888 int do_obj ATTRIBUTE_UNUSED)
2890 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2898 len = strlen (name);
2900 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2901 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2902 if (do_obj && len > 2
2903 && name[len - 2] == '.'
2904 && name[len - 1] == 'o')
2906 obstack_grow (&obstack, name, len - 2);
2907 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2908 name = XOBFINISH (&obstack, const char *);
2912 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2913 /* If there is no filetype, make it the executable suffix (which includes
2914 the "."). But don't get confused if we have just "-o". */
2915 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
2918 for (i = len - 1; i >= 0; i--)
2919 if (IS_DIR_SEPARATOR (name[i]))
2922 for (i++; i < len; i++)
2926 obstack_grow (&obstack, name, len);
2927 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
2928 strlen (TARGET_EXECUTABLE_SUFFIX));
2929 name = XOBFINISH (&obstack, const char *);
2936 /* Display the command line switches accepted by gcc. */
2940 printf (_("Usage: %s [options] file...\n"), progname);
2941 fputs (_("Options:\n"), stdout);
2943 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
2944 fputs (_(" --help Display this information\n"), stdout);
2945 fputs (_(" --target-help Display target specific command line options\n"), stdout);
2946 fputs (_(" --help={target|optimizers|warnings|params|[^]{joined|separate|undocumented}}[,...]\n"), stdout);
2947 fputs (_(" Display specific types of command line options\n"), stdout);
2949 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
2950 fputs (_(" --version Display compiler version information\n"), stdout);
2951 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
2952 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
2953 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
2954 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
2955 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
2956 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
2957 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
2958 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
2960 -print-multi-lib Display the mapping between command line options and\n\
2961 multiple library search directories\n"), stdout);
2962 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
2963 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout);
2964 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout);
2965 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
2966 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
2967 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
2968 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
2969 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
2970 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
2971 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
2972 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout);
2974 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
2975 prefixes to other gcc components\n"), stdout);
2976 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
2977 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
2978 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
2979 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
2981 --sysroot=<directory> Use <directory> as the root directory for headers\n\
2982 and libraries\n"), stdout);
2983 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
2984 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
2985 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
2986 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
2987 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
2988 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
2989 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
2991 -x <language> Specify the language of the following input files\n\
2992 Permissible languages include: c c++ assembler none\n\
2993 'none' means revert to the default behavior of\n\
2994 guessing the language based on the file's extension\n\
2998 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
2999 passed on to the various sub-processes invoked by %s. In order to pass\n\
3000 other options on to these processes the -W<letter> options must be used.\n\
3003 /* The rest of the options are displayed by invocations of the various
3008 add_preprocessor_option (const char *option, int len)
3010 VEC_safe_push (char_p, heap, preprocessor_options,
3011 save_string (option, len));
3015 add_assembler_option (const char *option, int len)
3017 VEC_safe_push (char_p, heap, assembler_options, save_string (option, len));
3021 add_linker_option (const char *option, int len)
3023 VEC_safe_push (char_p, heap, linker_options, save_string (option, len));
3026 /* Allocate space for an input file in infiles. */
3031 if (n_infiles_alloc == 0)
3033 n_infiles_alloc = 16;
3034 infiles = XNEWVEC (struct infile, n_infiles_alloc);
3036 else if (n_infiles_alloc == n_infiles)
3038 n_infiles_alloc *= 2;
3039 infiles = XRESIZEVEC (struct infile, infiles, n_infiles_alloc);
3043 /* Store an input file with the given NAME and LANGUAGE in
3047 add_infile (const char *name, const char *language)
3050 infiles[n_infiles].name = name;
3051 infiles[n_infiles++].language = language;
3054 /* Allocate space for a switch in switches. */
3059 if (n_switches_alloc == 0)
3061 n_switches_alloc = 16;
3062 switches = XNEWVEC (struct switchstr, n_switches_alloc);
3064 else if (n_switches_alloc == n_switches)
3066 n_switches_alloc *= 2;
3067 switches = XRESIZEVEC (struct switchstr, switches, n_switches_alloc);
3071 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3072 as validated if VALIDATED. */
3075 save_switch (const char *opt, size_t n_args, const char *const *args,
3079 switches[n_switches].part1 = opt + 1;
3081 switches[n_switches].args = 0;
3084 switches[n_switches].args = XNEWVEC (const char *, n_args + 1);
3085 memcpy (switches[n_switches].args, args, n_args * sizeof (const char *));
3086 switches[n_switches].args[n_args] = NULL;
3089 switches[n_switches].live_cond = 0;
3090 switches[n_switches].validated = validated;
3091 switches[n_switches].ordering = 0;
3095 /* Handle an option DECODED that is unknown to the option-processing
3099 driver_unknown_option_callback (const struct cl_decoded_option *decoded)
3101 const char *opt = decoded->arg;
3102 if (opt[1] == 'W' && opt[2] == 'n' && opt[3] == 'o' && opt[4] == '-'
3103 && !(decoded->errors & CL_ERR_NEGATIVE))
3105 /* Leave unknown -Wno-* options for the compiler proper, to be
3106 diagnosed only if there are warnings. */
3107 save_switch (decoded->canonical_option[0],
3108 decoded->canonical_option_num_elements - 1,
3109 &decoded->canonical_option[1], false);
3116 /* Handle an option DECODED that is not marked as CL_DRIVER.
3117 LANG_MASK will always be CL_DRIVER. */
3120 driver_wrong_lang_callback (const struct cl_decoded_option *decoded,
3121 unsigned int lang_mask ATTRIBUTE_UNUSED)
3123 /* At this point, non-driver options are accepted (and expected to
3124 be passed down by specs) unless marked to be rejected by the
3125 driver. Options to be rejected by the driver but accepted by the
3126 compilers proper are treated just like completely unknown
3128 const struct cl_option *option = &cl_options[decoded->opt_index];
3130 if (option->cl_reject_driver)
3131 error ("unrecognized command line option %qs",
3132 decoded->orig_option_with_args_text);
3134 save_switch (decoded->canonical_option[0],
3135 decoded->canonical_option_num_elements - 1,
3136 &decoded->canonical_option[1], false);
3139 /* Note that an option (index OPT_INDEX, argument ARG, value VALUE)
3140 has been successfully handled with a handler for mask MASK. */
3143 driver_post_handling_callback (const struct cl_decoded_option *decoded ATTRIBUTE_UNUSED,
3144 unsigned int mask ATTRIBUTE_UNUSED)
3146 /* Nothing to do here. */
3149 static const char *spec_lang = 0;
3150 static int last_language_n_infiles;
3152 /* Handle a driver option; arguments and return value as for
3156 driver_handle_option (struct gcc_options *opts,
3157 struct gcc_options *opts_set,
3158 const struct cl_decoded_option *decoded,
3159 unsigned int lang_mask ATTRIBUTE_UNUSED, int kind,
3161 const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED,
3162 diagnostic_context *dc)
3164 size_t opt_index = decoded->opt_index;
3165 const char *arg = decoded->arg;
3166 const char *compare_debug_replacement_opt;
3167 int value = decoded->value;
3168 bool validated = false;
3169 bool do_save = true;
3171 gcc_assert (opts == &global_options);
3172 gcc_assert (opts_set == &global_options_set);
3173 gcc_assert (kind == DK_UNSPECIFIED);
3174 gcc_assert (loc == UNKNOWN_LOCATION);
3175 gcc_assert (dc == global_dc);
3181 struct spec_list *sl;
3183 for (sl = specs; sl; sl = sl->next)
3184 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3185 if (link_command_spec)
3186 printf ("*link_command:\n%s\n\n", link_command_spec);
3190 case OPT_dumpversion:
3191 printf ("%s\n", spec_version);
3194 case OPT_dumpmachine:
3195 printf ("%s\n", spec_machine);
3201 /* CPP driver cannot obtain switch from cc1_options. */
3203 add_preprocessor_option ("--version", strlen ("--version"));
3204 add_assembler_option ("--version", strlen ("--version"));
3205 add_linker_option ("--version", strlen ("--version"));
3209 print_help_list = 1;
3211 /* CPP driver cannot obtain switch from cc1_options. */
3213 add_preprocessor_option ("--help", 6);
3214 add_assembler_option ("--help", 6);
3215 add_linker_option ("--help", 6);
3219 print_subprocess_help = 2;
3222 case OPT__target_help:
3223 print_subprocess_help = 1;
3225 /* CPP driver cannot obtain switch from cc1_options. */
3227 add_preprocessor_option ("--target-help", 13);
3228 add_assembler_option ("--target-help", 13);
3229 add_linker_option ("--target-help", 13);
3232 case OPT_pass_exit_codes:
3233 case OPT_print_search_dirs:
3234 case OPT_print_file_name_:
3235 case OPT_print_prog_name_:
3236 case OPT_print_multi_lib:
3237 case OPT_print_multi_directory:
3238 case OPT_print_sysroot:
3239 case OPT_print_multi_os_directory:
3240 case OPT_print_sysroot_headers_suffix:
3243 /* These options set the variables specified in common.opt
3244 automatically, and do not need to be saved for spec
3249 case OPT_print_libgcc_file_name:
3250 print_file_name = "libgcc.a";
3254 case OPT_fcompare_debug_second:
3255 compare_debug_second = 1;
3258 case OPT_fcompare_debug:
3262 compare_debug_replacement_opt = "-fcompare-debug=";
3264 goto compare_debug_with_arg;
3267 compare_debug_replacement_opt = "-fcompare-debug=-gtoggle";
3269 goto compare_debug_with_arg;
3276 case OPT_fcompare_debug_:
3277 compare_debug_replacement_opt = decoded->canonical_option[0];
3278 compare_debug_with_arg:
3279 gcc_assert (decoded->canonical_option_num_elements == 1);
3280 gcc_assert (arg != NULL);
3285 if (compare_debug < 0)
3286 compare_debug_opt = NULL;
3288 compare_debug_opt = arg;
3289 save_switch (compare_debug_replacement_opt, 0, NULL, validated);
3295 /* Pass the rest of this option to the assembler. */
3297 /* Split the argument at commas. */
3299 for (j = 0; arg[j]; j++)
3302 add_assembler_option (arg + prev, j - prev);
3306 /* Record the part after the last comma. */
3307 add_assembler_option (arg + prev, j - prev);
3315 /* Pass the rest of this option to the preprocessor. */
3317 /* Split the argument at commas. */
3319 for (j = 0; arg[j]; j++)
3322 add_preprocessor_option (arg + prev, j - prev);
3326 /* Record the part after the last comma. */
3327 add_preprocessor_option (arg + prev, j - prev);
3335 /* Split the argument at commas. */
3337 for (j = 0; arg[j]; j++)
3340 add_infile (save_string (arg + prev, j - prev), "*");
3343 /* Record the part after the last comma. */
3344 add_infile (arg + prev, "*");
3350 add_infile (arg, "*");
3354 case OPT_Xpreprocessor:
3355 add_preprocessor_option (arg, strlen (arg));
3359 case OPT_Xassembler:
3360 add_assembler_option (arg, strlen (arg));
3365 /* POSIX allows separation of -l and the lib arg; canonicalize
3366 by concatenating -l with its arg */
3367 add_infile (concat ("-l", arg, NULL), "*");
3372 /* Similarly, canonicalize -L for linkers that may not accept
3373 separate arguments. */
3374 save_switch (concat ("-L", arg, NULL), 0, NULL, validated);
3379 save_switch (concat ("-F", arg, NULL), 0, NULL, validated);
3382 case OPT_save_temps:
3383 save_temps_flag = SAVE_TEMPS_CWD;
3387 case OPT_save_temps_:
3388 if (strcmp (arg, "cwd") == 0)
3389 save_temps_flag = SAVE_TEMPS_CWD;
3390 else if (strcmp (arg, "obj") == 0
3391 || strcmp (arg, "object") == 0)
3392 save_temps_flag = SAVE_TEMPS_OBJ;
3394 fatal_error ("%qs is an unknown -save-temps option",
3395 decoded->orig_option_with_args_text);
3398 case OPT_no_canonical_prefixes:
3399 /* Already handled as a special case, so ignored here. */
3405 /* These options set the variables specified in common.opt
3406 automatically, but do need to be saved for spec
3412 struct user_specs *user = XNEW (struct user_specs);
3414 user->next = (struct user_specs *) 0;
3415 user->filename = arg;
3416 if (user_specs_tail)
3417 user_specs_tail->next = user;
3419 user_specs_head = user;
3420 user_specs_tail = user;
3426 target_system_root = arg;
3427 target_system_root_changed = 1;
3432 if (report_times_to_file)
3433 fclose (report_times_to_file);
3434 report_times_to_file = fopen (arg, "a");
3440 This is similar to -v except that there is no execution
3441 of the commands and the echoed arguments are quoted. It
3442 is intended for use in shell scripts to capture the
3443 driver-generated command line. */
3444 verbose_only_flag++;
3451 size_t len = strlen (arg);
3453 /* Catch the case where the user has forgotten to append a
3454 directory separator to the path. Note, they may be using
3455 -B to add an executable name prefix, eg "i386-elf-", in
3456 order to distinguish between multiple installations of
3457 GCC in the same directory. Hence we must check to see
3458 if appending a directory separator actually makes a
3459 valid directory name. */
3460 if (!IS_DIR_SEPARATOR (arg[len - 1])
3461 && is_directory (arg, false))
3463 char *tmp = XNEWVEC (char, len + 2);
3465 tmp[len] = DIR_SEPARATOR;
3470 add_prefix (&exec_prefixes, arg, NULL,
3471 PREFIX_PRIORITY_B_OPT, 0, 0);
3472 add_prefix (&startfile_prefixes, arg, NULL,
3473 PREFIX_PRIORITY_B_OPT, 0, 0);
3474 add_prefix (&include_prefixes, arg, NULL,
3475 PREFIX_PRIORITY_B_OPT, 0, 0);
3482 if (!strcmp (spec_lang, "none"))
3483 /* Suppress the warning if -xnone comes after the last input
3484 file, because alternate command interfaces like g++ might
3485 find it useful to place -xnone after each input file. */
3488 last_language_n_infiles = n_infiles;
3494 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3495 arg = convert_filename (arg, ! have_c, 0);
3497 /* Save the output name in case -save-temps=obj was used. */
3498 save_temps_prefix = xstrdup (arg);
3499 /* On some systems, ld cannot handle "-o" without a space. So
3500 split the option from its argument. */
3501 save_switch ("-o", 1, &arg, validated);
3504 case OPT_static_libgcc:
3505 case OPT_shared_libgcc:
3506 case OPT_static_libgfortran:
3507 case OPT_static_libstdc__:
3508 /* These are always valid, since gcc.c itself understands the
3509 first two, gfortranspec.c understands -static-libgfortran and
3510 g++spec.c understands -static-libstdc++ */
3515 /* Various driver options need no special processing at this
3516 point, having been handled in a prescan above or being
3517 handled by specs. */
3522 save_switch (decoded->canonical_option[0],
3523 decoded->canonical_option_num_elements - 1,
3524 &decoded->canonical_option[1], validated);
3528 /* Put the driver's standard set of option handlers in *HANDLERS. */
3531 set_option_handlers (struct cl_option_handlers *handlers)
3533 handlers->unknown_option_callback = driver_unknown_option_callback;
3534 handlers->wrong_lang_callback = driver_wrong_lang_callback;
3535 handlers->post_handling_callback = driver_post_handling_callback;
3536 handlers->num_handlers = 3;
3537 handlers->handlers[0].handler = driver_handle_option;
3538 handlers->handlers[0].mask = CL_DRIVER;
3539 handlers->handlers[1].handler = common_handle_option;
3540 handlers->handlers[1].mask = CL_COMMON;
3541 handlers->handlers[2].handler = target_handle_option;
3542 handlers->handlers[2].mask = CL_TARGET;
3545 /* Create the vector `switches' and its contents.
3546 Store its length in `n_switches'. */
3549 process_command (unsigned int decoded_options_count,
3550 struct cl_decoded_option *decoded_options)
3554 const char *tooldir_prefix;
3555 char *(*get_relative_prefix) (const char *, const char *,
3556 const char *) = NULL;
3557 struct cl_option_handlers handlers;
3560 gcc_exec_prefix = getenv ("GCC_EXEC_PREFIX");
3564 added_libraries = 0;
3566 /* Figure compiler version from version string. */
3568 compiler_version = temp1 = xstrdup (version_string);
3570 for (; *temp1; ++temp1)
3579 /* Handle any -no-canonical-prefixes flag early, to assign the function
3580 that builds relative prefixes. This function creates default search
3581 paths that are needed later in normal option handling. */
3583 for (j = 1; j < decoded_options_count; j++)
3585 if (decoded_options[j].opt_index == OPT_no_canonical_prefixes)
3587 get_relative_prefix = make_relative_prefix_ignore_links;
3591 if (! get_relative_prefix)
3592 get_relative_prefix = make_relative_prefix;
3594 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3595 see if we can create it from the pathname specified in
3596 decoded_options[0].arg. */
3598 gcc_libexec_prefix = standard_libexec_prefix;
3600 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3601 if (!gcc_exec_prefix)
3603 gcc_exec_prefix = get_relative_prefix (decoded_options[0].arg,
3604 standard_bindir_prefix,
3605 standard_exec_prefix);
3606 gcc_libexec_prefix = get_relative_prefix (decoded_options[0].arg,
3607 standard_bindir_prefix,
3608 standard_libexec_prefix);
3609 if (gcc_exec_prefix)
3610 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3614 /* make_relative_prefix requires a program name, but
3615 GCC_EXEC_PREFIX is typically a directory name with a trailing
3616 / (which is ignored by make_relative_prefix), so append a
3618 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL);
3619 gcc_libexec_prefix = get_relative_prefix (tmp_prefix,
3620 standard_exec_prefix,
3621 standard_libexec_prefix);
3623 /* The path is unrelocated, so fallback to the original setting. */
3624 if (!gcc_libexec_prefix)
3625 gcc_libexec_prefix = standard_libexec_prefix;
3631 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3632 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3633 or an automatically created GCC_EXEC_PREFIX from
3634 decoded_options[0].arg. */
3636 /* Do language-specific adjustment/addition of flags. */
3637 lang_specific_driver (&decoded_options, &decoded_options_count,
3640 if (gcc_exec_prefix)
3642 int len = strlen (gcc_exec_prefix);
3644 if (len > (int) sizeof ("/lib/gcc/") - 1
3645 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3647 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3648 if (IS_DIR_SEPARATOR (*temp)
3649 && filename_ncmp (temp + 1, "lib", 3) == 0
3650 && IS_DIR_SEPARATOR (temp[4])
3651 && filename_ncmp (temp + 5, "gcc", 3) == 0)
3652 len -= sizeof ("/lib/gcc/") - 1;
3655 set_std_prefix (gcc_exec_prefix, len);
3656 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3657 PREFIX_PRIORITY_LAST, 0, 0);
3658 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3659 PREFIX_PRIORITY_LAST, 0, 0);
3662 /* COMPILER_PATH and LIBRARY_PATH have values
3663 that are lists of directory names with colons. */
3665 temp = getenv ("COMPILER_PATH");
3668 const char *startp, *endp;
3669 char *nstore = (char *) alloca (strlen (temp) + 3);
3671 startp = endp = temp;
3674 if (*endp == PATH_SEPARATOR || *endp == 0)
3676 strncpy (nstore, startp, endp - startp);
3678 strcpy (nstore, concat (".", dir_separator_str, NULL));
3679 else if (!IS_DIR_SEPARATOR (endp[-1]))
3681 nstore[endp - startp] = DIR_SEPARATOR;
3682 nstore[endp - startp + 1] = 0;
3685 nstore[endp - startp] = 0;
3686 add_prefix (&exec_prefixes, nstore, 0,
3687 PREFIX_PRIORITY_LAST, 0, 0);
3688 add_prefix (&include_prefixes, nstore, 0,
3689 PREFIX_PRIORITY_LAST, 0, 0);
3692 endp = startp = endp + 1;
3699 temp = getenv (LIBRARY_PATH_ENV);
3700 if (temp && *cross_compile == '0')
3702 const char *startp, *endp;
3703 char *nstore = (char *) alloca (strlen (temp) + 3);
3705 startp = endp = temp;
3708 if (*endp == PATH_SEPARATOR || *endp == 0)
3710 strncpy (nstore, startp, endp - startp);
3712 strcpy (nstore, concat (".", dir_separator_str, NULL));
3713 else if (!IS_DIR_SEPARATOR (endp[-1]))
3715 nstore[endp - startp] = DIR_SEPARATOR;
3716 nstore[endp - startp + 1] = 0;
3719 nstore[endp - startp] = 0;
3720 add_prefix (&startfile_prefixes, nstore, NULL,
3721 PREFIX_PRIORITY_LAST, 0, 1);
3724 endp = startp = endp + 1;
3731 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3732 temp = getenv ("LPATH");
3733 if (temp && *cross_compile == '0')
3735 const char *startp, *endp;
3736 char *nstore = (char *) alloca (strlen (temp) + 3);
3738 startp = endp = temp;
3741 if (*endp == PATH_SEPARATOR || *endp == 0)
3743 strncpy (nstore, startp, endp - startp);
3745 strcpy (nstore, concat (".", dir_separator_str, NULL));
3746 else if (!IS_DIR_SEPARATOR (endp[-1]))
3748 nstore[endp - startp] = DIR_SEPARATOR;
3749 nstore[endp - startp + 1] = 0;
3752 nstore[endp - startp] = 0;
3753 add_prefix (&startfile_prefixes, nstore, NULL,
3754 PREFIX_PRIORITY_LAST, 0, 1);
3757 endp = startp = endp + 1;
3764 /* Process the options and store input files and switches in their
3767 last_language_n_infiles = -1;
3769 set_option_handlers (&handlers);
3771 for (j = 1; j < decoded_options_count; j++)
3773 switch (decoded_options[j].opt_index)
3785 for (j = 1; j < decoded_options_count; j++)
3787 if (decoded_options[j].opt_index == OPT_SPECIAL_input_file)
3789 const char *arg = decoded_options[j].arg;
3790 const char *p = strrchr (arg, '@');
3794 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3795 arg = convert_filename (arg, 0, access (arg, F_OK));
3797 /* For LTO static archive support we handle input file
3798 specifications that are composed of a filename and
3799 an offset like FNAME@OFFSET. */
3802 && sscanf (p, "@%li%n", &offset, &consumed) >= 1
3803 && strlen (p) == (unsigned int)consumed)
3805 fname = (char *)xmalloc (p - arg + 1);
3806 memcpy (fname, arg, p - arg);
3807 fname[p - arg] = '\0';
3808 /* Only accept non-stdin and existing FNAME parts, otherwise
3809 try with the full name. */
3810 if (strcmp (fname, "-") == 0 || access (fname, F_OK) < 0)
3813 fname = xstrdup (arg);
3817 fname = xstrdup (arg);
3819 if (strcmp (fname, "-") != 0 && access (fname, F_OK) < 0)
3820 perror_with_name (fname);
3822 add_infile (arg, spec_lang);
3828 read_cmdline_option (&global_options, &global_options_set,
3829 decoded_options + j, UNKNOWN_LOCATION,
3830 CL_DRIVER, &handlers, global_dc);
3833 /* If -save-temps=obj and -o name, create the prefix to use for %b.
3834 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
3835 if (save_temps_flag == SAVE_TEMPS_OBJ && save_temps_prefix != NULL)
3837 save_temps_length = strlen (save_temps_prefix);
3838 temp = strrchr (lbasename (save_temps_prefix), '.');
3841 save_temps_length -= strlen (temp);
3842 save_temps_prefix[save_temps_length] = '\0';
3846 else if (save_temps_prefix != NULL)
3848 free (save_temps_prefix);
3849 save_temps_prefix = NULL;
3852 if (save_temps_flag && use_pipes)
3854 /* -save-temps overrides -pipe, so that temp files are produced */
3855 if (save_temps_flag)
3856 warning (0, "-pipe ignored because -save-temps specified");
3862 const char *gcd = getenv ("GCC_COMPARE_DEBUG");
3864 if (gcd && gcd[0] == '-')
3867 compare_debug_opt = gcd;
3869 else if (gcd && *gcd && strcmp (gcd, "0"))
3872 compare_debug_opt = "-gtoggle";
3875 else if (compare_debug < 0)
3878 gcc_assert (!compare_debug_opt);
3881 /* Set up the search paths. We add directories that we expect to
3882 contain GNU Toolchain components before directories specified by
3883 the machine description so that we will find GNU components (like
3884 the GNU assembler) before those of the host system. */
3886 /* If we don't know where the toolchain has been installed, use the
3887 configured-in locations. */
3888 if (!gcc_exec_prefix)
3891 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
3892 PREFIX_PRIORITY_LAST, 1, 0);
3893 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
3894 PREFIX_PRIORITY_LAST, 2, 0);
3895 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3896 PREFIX_PRIORITY_LAST, 2, 0);
3898 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3899 PREFIX_PRIORITY_LAST, 1, 0);
3902 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix));
3903 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3904 dir_separator_str, NULL);
3906 /* Look for tools relative to the location from which the driver is
3907 running, or, if that is not available, the configured prefix. */
3909 = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
3910 spec_machine, dir_separator_str,
3911 spec_version, dir_separator_str, tooldir_prefix, NULL);
3913 add_prefix (&exec_prefixes,
3914 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3915 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0);
3916 add_prefix (&startfile_prefixes,
3917 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3918 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1);
3920 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
3921 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
3922 then consider it to relocate with the rest of the GCC installation
3923 if GCC_EXEC_PREFIX is set.
3924 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
3925 if (target_system_root && !target_system_root_changed && gcc_exec_prefix)
3927 char *tmp_prefix = get_relative_prefix (decoded_options[0].arg,
3928 standard_bindir_prefix,
3929 target_system_root);
3930 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
3932 target_system_root = tmp_prefix;
3933 target_system_root_changed = 1;
3938 /* More prefixes are enabled in main, after we read the specs file
3939 and determine whether this is cross-compilation or not. */
3941 if (n_infiles == last_language_n_infiles && spec_lang != 0)
3942 warning (0, "%<-x %s%> after last input file has no effect", spec_lang);
3944 if (compare_debug == 2 || compare_debug == 3)
3947 switches[n_switches].part1 = concat ("fcompare-debug=",
3950 switches[n_switches].args = 0;
3951 switches[n_switches].live_cond = 0;
3952 switches[n_switches].validated = 0;
3953 switches[n_switches].ordering = 0;
3958 /* Ensure we only invoke each subprocess once. */
3959 if (print_subprocess_help || print_help_list || print_version)
3963 /* Create a dummy input file, so that we can pass
3964 the help option on to the various sub-processes. */
3965 add_infile ("help-dummy", "c");
3969 switches[n_switches].part1 = 0;
3971 infiles[n_infiles].name = 0;
3974 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
3975 and place that in the environment. */
3978 set_collect_gcc_options (void)
3983 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
3985 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
3986 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
3989 for (i = 0; (int) i < n_switches; i++)
3991 const char *const *args;
3994 obstack_grow (&collect_obstack, " ", 1);
3998 /* Ignore elided switches. */
3999 if ((switches[i].live_cond
4000 & (SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC))
4004 obstack_grow (&collect_obstack, "'-", 2);
4005 q = switches[i].part1;
4006 while ((p = strchr (q, '\'')))
4008 obstack_grow (&collect_obstack, q, p - q);
4009 obstack_grow (&collect_obstack, "'\\''", 4);
4012 obstack_grow (&collect_obstack, q, strlen (q));
4013 obstack_grow (&collect_obstack, "'", 1);
4015 for (args = switches[i].args; args && *args; args++)
4017 obstack_grow (&collect_obstack, " '", 2);
4019 while ((p = strchr (q, '\'')))
4021 obstack_grow (&collect_obstack, q, p - q);
4022 obstack_grow (&collect_obstack, "'\\''", 4);
4025 obstack_grow (&collect_obstack, q, strlen (q));
4026 obstack_grow (&collect_obstack, "'", 1);
4029 obstack_grow (&collect_obstack, "\0", 1);
4030 xputenv (XOBFINISH (&collect_obstack, char *));
4033 /* Process a spec string, accumulating and running commands. */
4035 /* These variables describe the input file name.
4036 input_file_number is the index on outfiles of this file,
4037 so that the output file name can be stored for later use by %o.
4038 input_basename is the start of the part of the input file
4039 sans all directory names, and basename_length is the number
4040 of characters starting there excluding the suffix .c or whatever. */
4042 static const char *gcc_input_filename;
4043 static int input_file_number;
4044 size_t input_filename_length;
4045 static int basename_length;
4046 static int suffixed_basename_length;
4047 static const char *input_basename;
4048 static const char *input_suffix;
4049 #ifndef HOST_LACKS_INODE_NUMBERS
4050 static struct stat input_stat;
4052 static int input_stat_set;
4054 /* The compiler used to process the current input file. */
4055 static struct compiler *input_file_compiler;
4057 /* These are variables used within do_spec and do_spec_1. */
4059 /* Nonzero if an arg has been started and not yet terminated
4060 (with space, tab or newline). */
4061 static int arg_going;
4063 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4064 is a temporary file name. */
4065 static int delete_this_arg;
4067 /* Nonzero means %w has been seen; the next arg to be terminated
4068 is the output file name of this compilation. */
4069 static int this_is_output_file;
4071 /* Nonzero means %s has been seen; the next arg to be terminated
4072 is the name of a library file and we should try the standard
4073 search dirs for it. */
4074 static int this_is_library_file;
4076 /* Nonzero means %T has been seen; the next arg to be terminated
4077 is the name of a linker script and we should try all of the
4078 standard search dirs for it. If it is found insert a --script
4079 command line switch and then substitute the full path in place,
4080 otherwise generate an error message. */
4081 static int this_is_linker_script;
4083 /* Nonzero means that the input of this command is coming from a pipe. */
4084 static int input_from_pipe;
4086 /* Nonnull means substitute this for any suffix when outputting a switches
4088 static const char *suffix_subst;
4090 /* If there is an argument being accumulated, terminate it and store it. */
4093 end_going_arg (void)
4099 obstack_1grow (&obstack, 0);
4100 string = XOBFINISH (&obstack, const char *);
4101 if (this_is_library_file)
4102 string = find_file (string);
4103 if (this_is_linker_script)
4105 char * full_script_path = find_a_file (&startfile_prefixes, string, R_OK, true);
4107 if (full_script_path == NULL)
4109 error ("unable to locate default linker script %qs in the library search paths", string);
4110 /* Script was not found on search path. */
4113 store_arg ("--script", false, false);
4114 string = full_script_path;
4116 store_arg (string, delete_this_arg, this_is_output_file);
4117 if (this_is_output_file)
4118 outfiles[input_file_number] = string;
4124 /* Parse the WRAPPER string which is a comma separated list of the command line
4125 and insert them into the beginning of argbuf. */
4128 insert_wrapper (const char *wrapper)
4132 char *buf = xstrdup (wrapper);
4134 unsigned int old_length = VEC_length (const_char_p, argbuf);
4142 while ((p = strchr (p, ',')) != NULL);
4144 VEC_safe_grow (const_char_p, heap, argbuf, old_length + n);
4145 memmove (VEC_address (const_char_p, argbuf) + n,
4146 VEC_address (const_char_p, argbuf),
4147 old_length * sizeof (const_char_p));
4158 VEC_replace (const_char_p, argbuf, i, p);
4161 while ((p = strchr (p, ',')) != NULL);
4162 gcc_assert (i == n);
4165 /* Process the spec SPEC and run the commands specified therein.
4166 Returns 0 if the spec is successfully processed; -1 if failed. */
4169 do_spec (const char *spec)
4173 value = do_spec_2 (spec);
4175 /* Force out any unfinished command.
4176 If -pipe, this forces out the last command if it ended in `|'. */
4179 if (VEC_length (const_char_p, argbuf) > 0
4180 && !strcmp (VEC_last (const_char_p, argbuf), "|"))
4181 VEC_pop (const_char_p, argbuf);
4183 set_collect_gcc_options ();
4185 if (VEC_length (const_char_p, argbuf) > 0)
4193 do_spec_2 (const char *spec)
4199 delete_this_arg = 0;
4200 this_is_output_file = 0;
4201 this_is_library_file = 0;
4202 this_is_linker_script = 0;
4203 input_from_pipe = 0;
4204 suffix_subst = NULL;
4206 result = do_spec_1 (spec, 0, NULL);
4214 /* Process the given spec string and add any new options to the end
4215 of the switches/n_switches array. */
4218 do_option_spec (const char *name, const char *spec)
4220 unsigned int i, value_count, value_len;
4221 const char *p, *q, *value;
4222 char *tmp_spec, *tmp_spec_p;
4224 if (configure_default_options[0].name == NULL)
4227 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4228 if (strcmp (configure_default_options[i].name, name) == 0)
4230 if (i == ARRAY_SIZE (configure_default_options))
4233 value = configure_default_options[i].value;
4234 value_len = strlen (value);
4236 /* Compute the size of the final spec. */
4239 while ((p = strstr (p, "%(VALUE)")) != NULL)
4245 /* Replace each %(VALUE) by the specified value. */
4246 tmp_spec = (char *) alloca (strlen (spec) + 1
4247 + value_count * (value_len - strlen ("%(VALUE)")));
4248 tmp_spec_p = tmp_spec;
4250 while ((p = strstr (q, "%(VALUE)")) != NULL)
4252 memcpy (tmp_spec_p, q, p - q);
4253 tmp_spec_p = tmp_spec_p + (p - q);
4254 memcpy (tmp_spec_p, value, value_len);
4255 tmp_spec_p += value_len;
4256 q = p + strlen ("%(VALUE)");
4258 strcpy (tmp_spec_p, q);
4260 do_self_spec (tmp_spec);
4263 /* Process the given spec string and add any new options to the end
4264 of the switches/n_switches array. */
4267 do_self_spec (const char *spec)
4272 do_spec_1 (" ", 0, NULL);
4274 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4275 do_self_specs adds the replacements to switches array, so it shouldn't
4276 be processed afterwards. */
4277 for (i = 0; i < n_switches; i++)
4278 if ((switches[i].live_cond & SWITCH_IGNORE))
4279 switches[i].live_cond |= SWITCH_IGNORE_PERMANENTLY;
4281 if (VEC_length (const_char_p, argbuf) > 0)
4283 const char **argbuf_copy;
4284 struct cl_decoded_option *decoded_options;
4285 struct cl_option_handlers handlers;
4286 unsigned int decoded_options_count;
4289 /* Create a copy of argbuf with a dummy argv[0] entry for
4290 decode_cmdline_options_to_array. */
4291 argbuf_copy = XNEWVEC (const char *,
4292 VEC_length (const_char_p, argbuf) + 1);
4293 argbuf_copy[0] = "";
4294 memcpy (argbuf_copy + 1, VEC_address (const_char_p, argbuf),
4295 VEC_length (const_char_p, argbuf) * sizeof (const char *));
4297 decode_cmdline_options_to_array (VEC_length (const_char_p, argbuf) + 1,
4299 CL_DRIVER, &decoded_options,
4300 &decoded_options_count);
4302 set_option_handlers (&handlers);
4304 for (j = 1; j < decoded_options_count; j++)
4306 switch (decoded_options[j].opt_index)
4308 case OPT_SPECIAL_input_file:
4309 /* Specs should only generate options, not input
4311 if (strcmp (decoded_options[j].arg, "-") != 0)
4312 fatal_error ("switch %qs does not start with %<-%>",
4313 decoded_options[j].arg);
4315 fatal_error ("spec-generated switch is just %<-%>");
4318 case OPT_fcompare_debug_second:
4319 case OPT_fcompare_debug:
4320 case OPT_fcompare_debug_:
4322 /* Avoid duplicate processing of some options from
4323 compare-debug specs; just save them here. */
4324 save_switch (decoded_options[j].canonical_option[0],
4325 (decoded_options[j].canonical_option_num_elements
4327 &decoded_options[j].canonical_option[1], false);
4331 read_cmdline_option (&global_options, &global_options_set,
4332 decoded_options + j, UNKNOWN_LOCATION,
4333 CL_DRIVER, &handlers, global_dc);
4339 switches[n_switches].part1 = 0;
4343 /* Callback for processing %D and %I specs. */
4345 struct spec_path_info {
4350 bool separate_options;
4354 spec_path (char *path, void *data)
4356 struct spec_path_info *info = (struct spec_path_info *) data;
4360 if (info->omit_relative && !IS_ABSOLUTE_PATH (path))
4363 if (info->append_len != 0)
4365 len = strlen (path);
4366 memcpy (path + len, info->append, info->append_len + 1);
4369 if (!is_directory (path, true))
4372 do_spec_1 (info->option, 1, NULL);
4373 if (info->separate_options)
4374 do_spec_1 (" ", 0, NULL);
4376 if (info->append_len == 0)
4378 len = strlen (path);
4379 save = path[len - 1];
4380 if (IS_DIR_SEPARATOR (path[len - 1]))
4381 path[len - 1] = '\0';
4384 do_spec_1 (path, 1, NULL);
4385 do_spec_1 (" ", 0, NULL);
4387 /* Must not damage the original path. */
4388 if (info->append_len == 0)
4389 path[len - 1] = save;
4394 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4398 create_at_file (char **argv)
4400 char *temp_file = make_temp_file ("");
4401 char *at_argument = concat ("@", temp_file, NULL);
4402 FILE *f = fopen (temp_file, "w");
4406 fatal_error ("could not open temporary response file %s",
4409 status = writeargv (argv, f);
4412 fatal_error ("could not write to temporary response file %s",
4415 status = fclose (f);
4418 fatal_error ("could not close temporary response file %s",
4421 store_arg (at_argument, 0, 0);
4423 record_temp_file (temp_file, !save_temps_flag, !save_temps_flag);
4426 /* True if we should compile INFILE. */
4429 compile_input_file_p (struct infile *infile)
4431 if ((!infile->language) || (infile->language[0] != '*'))
4432 if (infile->incompiler == input_file_compiler)
4437 /* Process each member of VEC as a spec. */
4440 do_specs_vec (VEC(char_p,heap) *vec)
4445 FOR_EACH_VEC_ELT (char_p, vec, ix, opt)
4447 do_spec_1 (opt, 1, NULL);
4448 /* Make each accumulated option a separate argument. */
4449 do_spec_1 (" ", 0, NULL);
4453 /* Process the sub-spec SPEC as a portion of a larger spec.
4454 This is like processing a whole spec except that we do
4455 not initialize at the beginning and we do not supply a
4456 newline by default at the end.
4457 INSWITCH nonzero means don't process %-sequences in SPEC;
4458 in this case, % is treated as an ordinary character.
4459 This is used while substituting switches.
4460 INSWITCH nonzero also causes SPC not to terminate an argument.
4462 Value is zero unless a line was finished
4463 and the command on that line reported an error. */
4466 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4468 const char *p = spec;
4473 /* If it's an empty string argument to a switch, keep it as is. */
4474 if (inswitch && !*p)
4478 /* If substituting a switch, treat all chars like letters.
4479 Otherwise, NL, SPC, TAB and % are special. */
4480 switch (inswitch ? 'a' : c)
4485 if (VEC_length (const_char_p, argbuf) > 0
4486 && !strcmp (VEC_last (const_char_p, argbuf), "|"))
4488 /* A `|' before the newline means use a pipe here,
4489 but only if -pipe was specified.
4490 Otherwise, execute now and don't pass the `|' as an arg. */
4493 input_from_pipe = 1;
4497 VEC_pop (const_char_p, argbuf);
4500 set_collect_gcc_options ();
4502 if (VEC_length (const_char_p, argbuf) > 0)
4508 /* Reinitialize for a new command, and for a new argument. */
4511 delete_this_arg = 0;
4512 this_is_output_file = 0;
4513 this_is_library_file = 0;
4514 this_is_linker_script = 0;
4515 input_from_pipe = 0;
4522 obstack_1grow (&obstack, c);
4530 /* Reinitialize for a new argument. */
4531 delete_this_arg = 0;
4532 this_is_output_file = 0;
4533 this_is_library_file = 0;
4534 this_is_linker_script = 0;
4541 fatal_error ("spec %qs invalid", spec);
4544 if (save_temps_length)
4545 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4547 obstack_grow (&obstack, input_basename, basename_length);
4548 if (compare_debug < 0)
4549 obstack_grow (&obstack, ".gk", 3);
4554 if (save_temps_length)
4555 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4557 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4558 if (compare_debug < 0)
4559 obstack_grow (&obstack, ".gk", 3);
4564 delete_this_arg = 2;
4567 /* Dump out the directories specified with LIBRARY_PATH,
4568 followed by the absolute directories
4569 that we search for startfiles. */
4572 struct spec_path_info info;
4575 info.append_len = 0;
4576 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4577 /* Used on systems which record the specified -L dirs
4578 and use them to search for dynamic linking.
4579 Relative directories always come from -B,
4580 and it is better not to use them for searching
4581 at run time. In particular, stage1 loses. */
4582 info.omit_relative = true;
4584 info.omit_relative = false;
4586 info.separate_options = false;
4588 for_each_path (&startfile_prefixes, true, 0, spec_path, &info);
4593 /* %efoo means report an error with `foo' as error message
4594 and don't execute any more commands for this file. */
4598 while (*p != 0 && *p != '\n')
4600 buf = (char *) alloca (p - q + 1);
4601 strncpy (buf, q, p - q);
4603 error ("%s", _(buf));
4608 /* %nfoo means report a notice with `foo' on stderr. */
4612 while (*p != 0 && *p != '\n')
4614 buf = (char *) alloca (p - q + 1);
4615 strncpy (buf, q, p - q);
4617 inform (0, "%s", _(buf));
4627 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4628 defined, and it is not a directory, and it is
4629 writable, use it. Otherwise, treat this like any
4630 other temporary file. */
4632 if ((!save_temps_flag)
4633 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4634 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4636 obstack_grow (&obstack, HOST_BIT_BUCKET,
4637 strlen (HOST_BIT_BUCKET));
4638 delete_this_arg = 0;
4643 goto create_temp_file;
4647 obstack_1grow (&obstack, '-');
4648 delete_this_arg = 0;
4651 /* consume suffix */
4652 while (*p == '.' || ISALNUM ((unsigned char) *p))
4654 if (p[0] == '%' && p[1] == 'O')
4659 goto create_temp_file;
4663 /* consume suffix */
4664 while (*p == '.' || ISALNUM ((unsigned char) *p))
4666 if (p[0] == '%' && p[1] == 'O')
4671 goto create_temp_file;
4677 struct temp_name *t;
4679 const char *suffix = p;
4680 char *saved_suffix = NULL;
4682 while (*p == '.' || ISALNUM ((unsigned char) *p))
4684 suffix_length = p - suffix;
4685 if (p[0] == '%' && p[1] == 'O')
4688 /* We don't support extra suffix characters after %O. */
4689 if (*p == '.' || ISALNUM ((unsigned char) *p))
4690 fatal_error ("spec %qs has invalid %<%%0%c%>", spec, *p);
4691 if (suffix_length == 0)
4692 suffix = TARGET_OBJECT_SUFFIX;
4696 = XNEWVEC (char, suffix_length
4697 + strlen (TARGET_OBJECT_SUFFIX));
4698 strncpy (saved_suffix, suffix, suffix_length);
4699 strcpy (saved_suffix + suffix_length,
4700 TARGET_OBJECT_SUFFIX);
4702 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4705 if (compare_debug < 0)
4707 suffix = concat (".gk", suffix, NULL);
4711 /* If -save-temps=obj and -o were specified, use that for the
4713 if (save_temps_length)
4716 temp_filename_length
4717 = save_temps_length + suffix_length + 1;
4718 tmp = (char *) alloca (temp_filename_length);
4719 memcpy (tmp, save_temps_prefix, save_temps_length);
4720 memcpy (tmp + save_temps_length, suffix, suffix_length);
4721 tmp[save_temps_length + suffix_length] = '\0';
4722 temp_filename = save_string (tmp,
4723 temp_filename_length + 1);
4724 obstack_grow (&obstack, temp_filename,
4725 temp_filename_length);
4727 delete_this_arg = 0;
4731 /* If the gcc_input_filename has the same suffix specified
4732 for the %g, %u, or %U, and -save-temps is specified,
4733 we could end up using that file as an intermediate
4734 thus clobbering the user's source file (.e.g.,
4735 gcc -save-temps foo.s would clobber foo.s with the
4736 output of cpp0). So check for this condition and
4737 generate a temp file as the intermediate. */
4739 if (save_temps_flag)
4742 temp_filename_length = basename_length + suffix_length + 1;
4743 tmp = (char *) alloca (temp_filename_length);
4744 memcpy (tmp, input_basename, basename_length);
4745 memcpy (tmp + basename_length, suffix, suffix_length);
4746 tmp[basename_length + suffix_length] = '\0';
4747 temp_filename = tmp;
4749 if (filename_cmp (temp_filename, gcc_input_filename) != 0)
4751 #ifndef HOST_LACKS_INODE_NUMBERS
4752 struct stat st_temp;
4754 /* Note, set_input() resets input_stat_set to 0. */
4755 if (input_stat_set == 0)
4757 input_stat_set = stat (gcc_input_filename,
4759 if (input_stat_set >= 0)
4763 /* If we have the stat for the gcc_input_filename
4764 and we can do the stat for the temp_filename
4765 then the they could still refer to the same
4766 file if st_dev/st_ino's are the same. */
4767 if (input_stat_set != 1
4768 || stat (temp_filename, &st_temp) < 0
4769 || input_stat.st_dev != st_temp.st_dev
4770 || input_stat.st_ino != st_temp.st_ino)
4772 /* Just compare canonical pathnames. */
4773 char* input_realname = lrealpath (gcc_input_filename);
4774 char* temp_realname = lrealpath (temp_filename);
4775 bool files_differ = filename_cmp (input_realname, temp_realname);
4776 free (input_realname);
4777 free (temp_realname);
4781 temp_filename = save_string (temp_filename,
4782 temp_filename_length + 1);
4783 obstack_grow (&obstack, temp_filename,
4784 temp_filename_length);
4786 delete_this_arg = 0;
4792 /* See if we already have an association of %g/%u/%U and
4794 for (t = temp_names; t; t = t->next)
4795 if (t->length == suffix_length
4796 && strncmp (t->suffix, suffix, suffix_length) == 0
4797 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
4800 /* Make a new association if needed. %u and %j
4802 if (t == 0 || c == 'u' || c == 'j')
4806 t = XNEW (struct temp_name);
4807 t->next = temp_names;
4810 t->length = suffix_length;
4813 t->suffix = saved_suffix;
4814 saved_suffix = NULL;
4817 t->suffix = save_string (suffix, suffix_length);
4818 t->unique = (c == 'u' || c == 'U' || c == 'j');
4819 temp_filename = make_temp_file (t->suffix);
4820 temp_filename_length = strlen (temp_filename);
4821 t->filename = temp_filename;
4822 t->filename_length = temp_filename_length;
4825 free (saved_suffix);
4827 obstack_grow (&obstack, t->filename, t->filename_length);
4828 delete_this_arg = 1;
4836 if (at_file_supplied)
4838 /* We are going to expand `%i' to `@FILE', where FILE
4839 is a newly-created temporary filename. The filenames
4840 that would usually be expanded in place of %o will be
4841 written to the temporary file. */
4846 for (i = 0; i < n_infiles; i++)
4847 if (compile_input_file_p (&infiles[i]))
4850 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
4852 /* Copy the strings over. */
4853 for (i = 0, j = 0; i < n_infiles; i++)
4854 if (compile_input_file_p (&infiles[i]))
4856 argv[j] = CONST_CAST (char *, infiles[i].name);
4857 infiles[i].compiled = true;
4862 create_at_file (argv);
4865 for (i = 0; (int) i < n_infiles; i++)
4866 if (compile_input_file_p (&infiles[i]))
4868 store_arg (infiles[i].name, 0, 0);
4869 infiles[i].compiled = true;
4874 obstack_grow (&obstack, gcc_input_filename,
4875 input_filename_length);
4882 struct spec_path_info info;
4886 do_spec_1 ("-imultilib", 1, NULL);
4887 /* Make this a separate argument. */
4888 do_spec_1 (" ", 0, NULL);
4889 do_spec_1 (multilib_dir, 1, NULL);
4890 do_spec_1 (" ", 0, NULL);
4893 if (gcc_exec_prefix)
4895 do_spec_1 ("-iprefix", 1, NULL);
4896 /* Make this a separate argument. */
4897 do_spec_1 (" ", 0, NULL);
4898 do_spec_1 (gcc_exec_prefix, 1, NULL);
4899 do_spec_1 (" ", 0, NULL);
4902 if (target_system_root_changed ||
4903 (target_system_root && target_sysroot_hdrs_suffix))
4905 do_spec_1 ("-isysroot", 1, NULL);
4906 /* Make this a separate argument. */
4907 do_spec_1 (" ", 0, NULL);
4908 do_spec_1 (target_system_root, 1, NULL);
4909 if (target_sysroot_hdrs_suffix)
4910 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
4911 do_spec_1 (" ", 0, NULL);
4914 info.option = "-isystem";
4915 info.append = "include";
4916 info.append_len = strlen (info.append);
4917 info.omit_relative = false;
4918 info.separate_options = true;
4920 for_each_path (&include_prefixes, false, info.append_len,
4923 info.append = "include-fixed";
4924 if (*sysroot_hdrs_suffix_spec)
4925 info.append = concat (info.append, dir_separator_str,
4926 multilib_dir, NULL);
4927 info.append_len = strlen (info.append);
4928 for_each_path (&include_prefixes, false, info.append_len,
4935 int max = n_infiles;
4936 max += lang_specific_extra_outfiles;
4938 if (HAVE_GNU_LD && at_file_supplied)
4940 /* We are going to expand `%o' to `@FILE', where FILE
4941 is a newly-created temporary filename. The filenames
4942 that would usually be expanded in place of %o will be
4943 written to the temporary file. */
4948 /* Convert OUTFILES into a form suitable for writeargv. */
4950 /* Determine how many are non-NULL. */
4951 for (n_files = 0, i = 0; i < max; i++)
4952 n_files += outfiles[i] != NULL;
4954 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
4956 /* Copy the strings over. */
4957 for (i = 0, j = 0; i < max; i++)
4960 argv[j] = CONST_CAST (char *, outfiles[i]);
4965 create_at_file (argv);
4968 for (i = 0; i < max; i++)
4970 store_arg (outfiles[i], 0, 0);
4975 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4980 this_is_library_file = 1;
4984 this_is_linker_script = 1;
4988 outfiles[input_file_number] = NULL;
4992 this_is_output_file = 1;
4997 unsigned int cur_index = VEC_length (const_char_p, argbuf);
4998 /* Handle the {...} following the %W. */
5000 fatal_error ("spec %qs has invalid %<%%W%c%>", spec, *p);
5001 p = handle_braces (p + 1);
5005 /* If any args were output, mark the last one for deletion
5007 if (VEC_length (const_char_p, argbuf) != cur_index)
5008 record_temp_file (VEC_last (const_char_p, argbuf), 0, 1);
5012 /* %x{OPTION} records OPTION for %X to output. */
5020 /* Skip past the option value and make a copy. */
5022 fatal_error ("spec %qs has invalid %<%%x%c%>", spec, *p);
5025 string = save_string (p1 + 1, p - p1 - 2);
5027 /* See if we already recorded this option. */
5028 FOR_EACH_VEC_ELT (char_p, linker_options, ix, opt)
5029 if (! strcmp (string, opt))
5035 /* This option is new; add it. */
5036 add_linker_option (string, strlen (string));
5040 /* Dump out the options accumulated previously using %x. */
5042 do_specs_vec (linker_options);
5045 /* Dump out the options accumulated previously using -Wa,. */
5047 do_specs_vec (assembler_options);
5050 /* Dump out the options accumulated previously using -Wp,. */
5052 do_specs_vec (preprocessor_options);
5055 /* Here are digits and numbers that just process
5056 a certain constant string as a spec. */
5059 value = do_spec_1 (cc1_spec, 0, NULL);
5065 value = do_spec_1 (cc1plus_spec, 0, NULL);
5071 value = do_spec_1 (asm_spec, 0, NULL);
5077 value = do_spec_1 (asm_final_spec, 0, NULL);
5084 const char *const spec
5085 = (input_file_compiler->cpp_spec
5086 ? input_file_compiler->cpp_spec
5088 value = do_spec_1 (spec, 0, NULL);
5095 value = do_spec_1 (endfile_spec, 0, NULL);
5101 value = do_spec_1 (link_spec, 0, NULL);
5107 value = do_spec_1 (lib_spec, 0, NULL);
5113 value = do_spec_1 (libgcc_spec, 0, NULL);
5119 /* We assume there is a directory
5120 separator at the end of this string. */
5121 if (target_system_root)
5123 obstack_grow (&obstack, target_system_root,
5124 strlen (target_system_root));
5125 if (target_sysroot_suffix)
5126 obstack_grow (&obstack, target_sysroot_suffix,
5127 strlen (target_sysroot_suffix));
5132 value = do_spec_1 (startfile_spec, 0, NULL);
5137 /* Here we define characters other than letters and digits. */
5140 p = handle_braces (p);
5146 p = handle_spec_function (p);
5152 obstack_1grow (&obstack, '%');
5159 while (p[len] && p[len] != ' ' && p[len] != '%')
5161 suffix_subst = save_string (p - 1, len + 1);
5166 /* Henceforth ignore the option(s) matching the pattern
5172 int have_wildcard = 0;
5177 switch_option = SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC;
5179 switch_option = SWITCH_IGNORE;
5181 while (p[len] && p[len] != ' ' && p[len] != '\t')
5184 if (p[len-1] == '*')
5187 for (i = 0; i < n_switches; i++)
5188 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5189 && (have_wildcard || switches[i].part1[len] == '\0'))
5191 switches[i].live_cond |= switch_option;
5192 switches[i].validated = 1;
5200 if (soft_matched_part)
5202 if (soft_matched_part[0])
5203 do_spec_1 (soft_matched_part, 1, NULL);
5204 do_spec_1 (" ", 0, NULL);
5207 /* Catch the case where a spec string contains something like
5208 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5209 hand side of the :. */
5210 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5213 /* Process a string found as the value of a spec given by name.
5214 This feature allows individual machine descriptions
5215 to add and use their own specs.
5216 %[...] modifies -D options the way %P does;
5217 %(...) uses the spec unmodified. */
5219 warning (0, "use of obsolete %%[ operator in specs");
5222 const char *name = p;
5223 struct spec_list *sl;
5226 /* The string after the S/P is the name of a spec that is to be
5228 while (*p && *p != ')' && *p != ']')
5231 /* See if it's in the list. */
5232 for (len = p - name, sl = specs; sl; sl = sl->next)
5233 if (sl->name_len == len && !strncmp (sl->name, name, len))
5235 name = *(sl->ptr_spec);
5237 fnotice (stderr, "Processing spec %c%s%c, which is '%s'\n",
5238 c, sl->name, (c == '(') ? ')' : ']', name);
5247 value = do_spec_1 (name, 0, NULL);
5253 char *x = (char *) alloca (strlen (name) * 2 + 1);
5255 const char *y = name;
5258 /* Copy all of NAME into BUF, but put __ after
5259 every -D and at the end of each arg. */
5262 if (! strncmp (y, "-D", 2))
5273 && (*y == ' ' || *y == '\t' || *y == '='
5274 || *y == '}' || *y == 0))
5287 value = do_spec_1 (buf, 0, NULL);
5293 /* Discard the closing paren or bracket. */
5300 error ("spec failure: unrecognized spec option %qc", c);
5306 /* Backslash: treat next character as ordinary. */
5311 /* Ordinary character: put it into the current argument. */
5312 obstack_1grow (&obstack, c);
5316 /* End of string. If we are processing a spec function, we need to
5317 end any pending argument. */
5318 if (processing_spec_function)
5324 /* Look up a spec function. */
5326 static const struct spec_function *
5327 lookup_spec_function (const char *name)
5329 const struct spec_function *sf;
5331 for (sf = static_spec_functions; sf->name != NULL; sf++)
5332 if (strcmp (sf->name, name) == 0)
5338 /* Evaluate a spec function. */
5341 eval_spec_function (const char *func, const char *args)
5343 const struct spec_function *sf;
5344 const char *funcval;
5346 /* Saved spec processing context. */
5347 VEC(const_char_p,heap) *save_argbuf;
5350 int save_delete_this_arg;
5351 int save_this_is_output_file;
5352 int save_this_is_library_file;
5353 int save_input_from_pipe;
5354 int save_this_is_linker_script;
5355 const char *save_suffix_subst;
5358 sf = lookup_spec_function (func);
5360 fatal_error ("unknown spec function %qs", func);
5362 /* Push the spec processing context. */
5363 save_argbuf = argbuf;
5365 save_arg_going = arg_going;
5366 save_delete_this_arg = delete_this_arg;
5367 save_this_is_output_file = this_is_output_file;
5368 save_this_is_library_file = this_is_library_file;
5369 save_this_is_linker_script = this_is_linker_script;
5370 save_input_from_pipe = input_from_pipe;
5371 save_suffix_subst = suffix_subst;
5373 /* Create a new spec processing context, and build the function
5377 if (do_spec_2 (args) < 0)
5378 fatal_error ("error in args to spec function %qs", func);
5380 /* argbuf_index is an index for the next argument to be inserted, and
5381 so contains the count of the args already inserted. */
5383 funcval = (*sf->func) (VEC_length (const_char_p, argbuf),
5384 VEC_address (const_char_p, argbuf));
5386 /* Pop the spec processing context. */
5387 VEC_free (const_char_p, heap, argbuf);
5388 argbuf = save_argbuf;
5390 arg_going = save_arg_going;
5391 delete_this_arg = save_delete_this_arg;
5392 this_is_output_file = save_this_is_output_file;
5393 this_is_library_file = save_this_is_library_file;
5394 this_is_linker_script = save_this_is_linker_script;
5395 input_from_pipe = save_input_from_pipe;
5396 suffix_subst = save_suffix_subst;
5401 /* Handle a spec function call of the form:
5405 ARGS is processed as a spec in a separate context and split into an
5406 argument vector in the normal fashion. The function returns a string
5407 containing a spec which we then process in the caller's context, or
5408 NULL if no processing is required. */
5411 handle_spec_function (const char *p)
5414 const char *endp, *funcval;
5417 processing_spec_function++;
5419 /* Get the function name. */
5420 for (endp = p; *endp != '\0'; endp++)
5422 if (*endp == '(') /* ) */
5424 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5425 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5426 fatal_error ("malformed spec function name");
5428 if (*endp != '(') /* ) */
5429 fatal_error ("no arguments for spec function");
5430 func = save_string (p, endp - p);
5433 /* Get the arguments. */
5434 for (count = 0; *endp != '\0'; endp++)
5443 else if (*endp == '(') /* ) */
5448 fatal_error ("malformed spec function arguments");
5449 args = save_string (p, endp - p);
5452 /* p now points to just past the end of the spec function expression. */
5454 funcval = eval_spec_function (func, args);
5455 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5461 processing_spec_function--;
5466 /* Inline subroutine of handle_braces. Returns true if the current
5467 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5469 input_suffix_matches (const char *atom, const char *end_atom)
5471 return (input_suffix
5472 && !strncmp (input_suffix, atom, end_atom - atom)
5473 && input_suffix[end_atom - atom] == '\0');
5476 /* Subroutine of handle_braces. Returns true if the current
5477 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5479 input_spec_matches (const char *atom, const char *end_atom)
5481 return (input_file_compiler
5482 && input_file_compiler->suffix
5483 && input_file_compiler->suffix[0] != '\0'
5484 && !strncmp (input_file_compiler->suffix + 1, atom,
5486 && input_file_compiler->suffix[end_atom - atom + 1] == '\0');
5489 /* Subroutine of handle_braces. Returns true if a switch
5490 matching the atom bracketed by ATOM and END_ATOM appeared on the
5493 switch_matches (const char *atom, const char *end_atom, int starred)
5496 int len = end_atom - atom;
5497 int plen = starred ? len : -1;
5499 for (i = 0; i < n_switches; i++)
5500 if (!strncmp (switches[i].part1, atom, len)
5501 && (starred || switches[i].part1[len] == '\0')
5502 && check_live_switch (i, plen))
5508 /* Inline subroutine of handle_braces. Mark all of the switches which
5509 match ATOM (extends to END_ATOM; STARRED indicates whether there
5510 was a star after the atom) for later processing. */
5512 mark_matching_switches (const char *atom, const char *end_atom, int starred)
5515 int len = end_atom - atom;
5516 int plen = starred ? len : -1;
5518 for (i = 0; i < n_switches; i++)
5519 if (!strncmp (switches[i].part1, atom, len)
5520 && (starred || switches[i].part1[len] == '\0')
5521 && check_live_switch (i, plen))
5522 switches[i].ordering = 1;
5525 /* Inline subroutine of handle_braces. Process all the currently
5526 marked switches through give_switch, and clear the marks. */
5528 process_marked_switches (void)
5532 for (i = 0; i < n_switches; i++)
5533 if (switches[i].ordering == 1)
5535 switches[i].ordering = 0;
5540 /* Handle a %{ ... } construct. P points just inside the leading {.
5541 Returns a pointer one past the end of the brace block, or 0
5542 if we call do_spec_1 and that returns -1. */
5545 handle_braces (const char *p)
5547 const char *atom, *end_atom;
5548 const char *d_atom = NULL, *d_end_atom = NULL;
5549 const char *orig = p;
5557 bool a_must_be_last = false;
5558 bool ordered_set = false;
5559 bool disjunct_set = false;
5560 bool disj_matched = false;
5561 bool disj_starred = true;
5562 bool n_way_choice = false;
5563 bool n_way_matched = false;
5565 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5572 /* Scan one "atom" (S in the description above of %{}, possibly
5573 with '!', '.', '@', ',', or '*' modifiers). */
5575 a_is_suffix = false;
5576 a_is_starred = false;
5577 a_is_negated = false;
5578 a_is_spectype = false;
5582 p++, a_is_negated = true;
5586 p++, a_is_suffix = true;
5588 p++, a_is_spectype = true;
5591 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5592 || *p == ',' || *p == '.' || *p == '@')
5597 p++, a_is_starred = 1;
5603 /* Substitute the switch(es) indicated by the current atom. */
5605 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5606 || a_is_spectype || atom == end_atom)
5609 mark_matching_switches (atom, end_atom, a_is_starred);
5612 process_marked_switches ();
5616 /* Substitute some text if the current atom appears as a switch
5618 disjunct_set = true;
5622 if (atom == end_atom)
5624 if (!n_way_choice || disj_matched || *p == '|'
5625 || a_is_negated || a_is_suffix || a_is_spectype
5629 /* An empty term may appear as the last choice of an
5630 N-way choice set; it means "otherwise". */
5631 a_must_be_last = true;
5632 disj_matched = !n_way_matched;
5633 disj_starred = false;
5637 if ((a_is_suffix || a_is_spectype) && a_is_starred)
5641 disj_starred = false;
5643 /* Don't bother testing this atom if we already have a
5645 if (!disj_matched && !n_way_matched)
5648 a_matched = input_suffix_matches (atom, end_atom);
5649 else if (a_is_spectype)
5650 a_matched = input_spec_matches (atom, end_atom);
5652 a_matched = switch_matches (atom, end_atom, a_is_starred);
5654 if (a_matched != a_is_negated)
5656 disj_matched = true;
5658 d_end_atom = end_atom;
5665 /* Found the body, that is, the text to substitute if the
5666 current disjunction matches. */
5667 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5668 disj_matched && !n_way_matched);
5672 /* If we have an N-way choice, reset state for the next
5676 n_way_choice = true;
5677 n_way_matched |= disj_matched;
5678 disj_matched = false;
5679 disj_starred = true;
5680 d_atom = d_end_atom = NULL;
5689 while (*p++ != '}');
5694 fatal_error ("braced spec %qs is invalid at %qc", orig, *p);
5699 /* Subroutine of handle_braces. Scan and process a brace substitution body
5700 (X in the description of %{} syntax). P points one past the colon;
5701 ATOM and END_ATOM bracket the first atom which was found to be true
5702 (present) in the current disjunction; STARRED indicates whether all
5703 the atoms in the current disjunction were starred (for syntax validation);
5704 MATCHED indicates whether the disjunction matched or not, and therefore
5705 whether or not the body is to be processed through do_spec_1 or just
5706 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5710 process_brace_body (const char *p, const char *atom, const char *end_atom,
5711 int starred, int matched)
5713 const char *body, *end_body;
5714 unsigned int nesting_level;
5715 bool have_subst = false;
5717 /* Locate the closing } or ;, honoring nested braces.
5718 Trim trailing whitespace. */
5727 if (!--nesting_level)
5730 else if (*p == ';' && nesting_level == 1)
5732 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
5734 else if (*p == '\0')
5740 while (end_body[-1] == ' ' || end_body[-1] == '\t')
5743 if (have_subst && !starred)
5748 /* Copy the substitution body to permanent storage and execute it.
5749 If have_subst is false, this is a simple matter of running the
5750 body through do_spec_1... */
5751 char *string = save_string (body, end_body - body);
5754 if (do_spec_1 (string, 0, NULL) < 0)
5759 /* ... but if have_subst is true, we have to process the
5760 body once for each matching switch, with %* set to the
5761 variant part of the switch. */
5762 unsigned int hard_match_len = end_atom - atom;
5765 for (i = 0; i < n_switches; i++)
5766 if (!strncmp (switches[i].part1, atom, hard_match_len)
5767 && check_live_switch (i, hard_match_len))
5769 if (do_spec_1 (string, 0,
5770 &switches[i].part1[hard_match_len]) < 0)
5772 /* Pass any arguments this switch has. */
5774 suffix_subst = NULL;
5782 fatal_error ("braced spec body %qs is invalid", body);
5785 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5786 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5787 spec, or -1 if either exact match or %* is used.
5789 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5790 whose value does not begin with "no-" is obsoleted by the same value
5791 with the "no-", similarly for a switch with the "no-" prefix. */
5794 check_live_switch (int switchnum, int prefix_length)
5796 const char *name = switches[switchnum].part1;
5799 /* If we already processed this switch and determined if it was
5800 live or not, return our past determination. */
5801 if (switches[switchnum].live_cond != 0)
5802 return ((switches[switchnum].live_cond & SWITCH_LIVE) != 0
5803 && (switches[switchnum].live_cond & SWITCH_FALSE) == 0
5804 && (switches[switchnum].live_cond & SWITCH_IGNORE_PERMANENTLY)
5807 /* In the common case of {<at-most-one-letter>*}, a negating
5808 switch would always match, so ignore that case. We will just
5809 send the conflicting switches to the compiler phase. */
5810 if (prefix_length >= 0 && prefix_length <= 1)
5813 /* Now search for duplicate in a manner that depends on the name. */
5817 for (i = switchnum + 1; i < n_switches; i++)
5818 if (switches[i].part1[0] == 'O')
5820 switches[switchnum].validated = 1;
5821 switches[switchnum].live_cond = SWITCH_FALSE;
5826 case 'W': case 'f': case 'm':
5827 if (! strncmp (name + 1, "no-", 3))
5829 /* We have Xno-YYY, search for XYYY. */
5830 for (i = switchnum + 1; i < n_switches; i++)
5831 if (switches[i].part1[0] == name[0]
5832 && ! strcmp (&switches[i].part1[1], &name[4]))
5834 switches[switchnum].validated = 1;
5835 switches[switchnum].live_cond = SWITCH_FALSE;
5841 /* We have XYYY, search for Xno-YYY. */
5842 for (i = switchnum + 1; i < n_switches; i++)
5843 if (switches[i].part1[0] == name[0]
5844 && switches[i].part1[1] == 'n'
5845 && switches[i].part1[2] == 'o'
5846 && switches[i].part1[3] == '-'
5847 && !strcmp (&switches[i].part1[4], &name[1]))
5849 switches[switchnum].validated = 1;
5850 switches[switchnum].live_cond = SWITCH_FALSE;
5857 /* Otherwise the switch is live. */
5858 switches[switchnum].live_cond |= SWITCH_LIVE;
5862 /* Pass a switch to the current accumulating command
5863 in the same form that we received it.
5864 SWITCHNUM identifies the switch; it is an index into
5865 the vector of switches gcc received, which is `switches'.
5866 This cannot fail since it never finishes a command line.
5868 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5871 give_switch (int switchnum, int omit_first_word)
5873 if ((switches[switchnum].live_cond & SWITCH_IGNORE) != 0)
5876 if (!omit_first_word)
5878 do_spec_1 ("-", 0, NULL);
5879 do_spec_1 (switches[switchnum].part1, 1, NULL);
5882 if (switches[switchnum].args != 0)
5885 for (p = switches[switchnum].args; *p; p++)
5887 const char *arg = *p;
5889 do_spec_1 (" ", 0, NULL);
5892 unsigned length = strlen (arg);
5895 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5896 if (arg[length] == '.')
5898 (CONST_CAST(char *, arg))[length] = 0;
5902 do_spec_1 (arg, 1, NULL);
5904 (CONST_CAST(char *, arg))[length] = '.';
5905 do_spec_1 (suffix_subst, 1, NULL);
5908 do_spec_1 (arg, 1, NULL);
5912 do_spec_1 (" ", 0, NULL);
5913 switches[switchnum].validated = 1;
5916 /* Search for a file named NAME trying various prefixes including the
5917 user's -B prefix and some standard ones.
5918 Return the absolute file name found. If nothing is found, return NAME. */
5921 find_file (const char *name)
5923 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true);
5924 return newname ? newname : name;
5927 /* Determine whether a directory exists. If LINKER, return 0 for
5928 certain fixed names not needed by the linker. */
5931 is_directory (const char *path1, bool linker)
5938 /* Ensure the string ends with "/.". The resulting path will be a
5939 directory even if the given path is a symbolic link. */
5940 len1 = strlen (path1);
5941 path = (char *) alloca (3 + len1);
5942 memcpy (path, path1, len1);
5944 if (!IS_DIR_SEPARATOR (cp[-1]))
5945 *cp++ = DIR_SEPARATOR;
5949 /* Exclude directories that the linker is known to search. */
5951 && IS_DIR_SEPARATOR (path[0])
5953 && filename_ncmp (path + 1, "lib", 3) == 0)
5955 && filename_ncmp (path + 1, "usr", 3) == 0
5956 && IS_DIR_SEPARATOR (path[4])
5957 && filename_ncmp (path + 5, "lib", 3) == 0)))
5960 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5963 /* Set up the various global variables to indicate that we're processing
5964 the input file named FILENAME. */
5967 set_input (const char *filename)
5971 gcc_input_filename = filename;
5972 input_filename_length = strlen (gcc_input_filename);
5973 input_basename = lbasename (gcc_input_filename);
5975 /* Find a suffix starting with the last period,
5976 and set basename_length to exclude that suffix. */
5977 basename_length = strlen (input_basename);
5978 suffixed_basename_length = basename_length;
5979 p = input_basename + basename_length;
5980 while (p != input_basename && *p != '.')
5982 if (*p == '.' && p != input_basename)
5984 basename_length = p - input_basename;
5985 input_suffix = p + 1;
5990 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5991 we will need to do a stat on the gcc_input_filename. The
5992 INPUT_STAT_SET signals that the stat is needed. */
5996 /* On fatal signals, delete all the temporary files. */
5999 fatal_signal (int signum)
6001 signal (signum, SIG_DFL);
6002 delete_failure_queue ();
6003 delete_temp_files ();
6004 /* Get the same signal again, this time not handled,
6005 so its normal effect occurs. */
6006 kill (getpid (), signum);
6009 /* Compare the contents of the two files named CMPFILE[0] and
6010 CMPFILE[1]. Return zero if they're identical, nonzero
6014 compare_files (char *cmpfile[])
6017 FILE *temp[2] = { NULL, NULL };
6023 void *map[2] = { NULL, NULL };
6025 for (i = 0; i < 2; i++)
6029 if (stat (cmpfile[i], &st) < 0 || !S_ISREG (st.st_mode))
6031 error ("%s: could not determine length of compare-debug file %s",
6032 gcc_input_filename, cmpfile[i]);
6037 length[i] = st.st_size;
6040 if (!ret && length[0] != length[1])
6042 error ("%s: -fcompare-debug failure (length)", gcc_input_filename);
6047 for (i = 0; i < 2; i++)
6049 int fd = open (cmpfile[i], O_RDONLY);
6052 error ("%s: could not open compare-debug file %s",
6053 gcc_input_filename, cmpfile[i]);
6058 map[i] = mmap (NULL, length[i], PROT_READ, MAP_PRIVATE, fd, 0);
6061 if (map[i] == (void *) MAP_FAILED)
6070 if (memcmp (map[0], map[1], length[0]) != 0)
6072 error ("%s: -fcompare-debug failure", gcc_input_filename);
6077 for (i = 0; i < 2; i++)
6079 munmap ((caddr_t) map[i], length[i]);
6088 for (i = 0; i < 2; i++)
6090 temp[i] = fopen (cmpfile[i], "r");
6093 error ("%s: could not open compare-debug file %s",
6094 gcc_input_filename, cmpfile[i]);
6100 if (!ret && temp[0] && temp[1])
6104 c0 = fgetc (temp[0]);
6105 c1 = fgetc (temp[1]);
6109 error ("%s: -fcompare-debug failure",
6110 gcc_input_filename);
6119 for (i = 1; i >= 0; i--)
6128 extern int main (int, char **);
6131 main (int argc, char **argv)
6135 int linker_was_run = 0;
6136 int lang_n_infiles = 0;
6137 int num_linker_inputs = 0;
6138 char *explicit_link_files;
6140 char *lto_wrapper_file;
6142 struct user_specs *uptr;
6143 char **old_argv = argv;
6144 struct cl_decoded_option *decoded_options;
6145 unsigned int decoded_options_count;
6147 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
6148 on ?: in file-scope variable initializations. */
6149 asm_debug = ASM_DEBUG_SPEC;
6151 p = argv[0] + strlen (argv[0]);
6152 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
6156 xmalloc_set_program_name (progname);
6158 expandargv (&argc, &argv);
6160 /* Determine if any expansions were made. */
6161 if (argv != old_argv)
6162 at_file_supplied = true;
6164 /* Register the language-independent parameters. */
6165 global_init_params ();
6168 init_options_struct (&global_options, &global_options_set);
6170 decode_cmdline_options_to_array (argc, CONST_CAST2 (const char **, char **,
6173 &decoded_options, &decoded_options_count);
6175 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6176 /* Perform host dependent initialization when needed. */
6177 GCC_DRIVER_HOST_INITIALIZATION;
6180 /* Unlock the stdio streams. */
6181 unlock_std_streams ();
6183 gcc_init_libintl ();
6185 diagnostic_initialize (global_dc, 0);
6186 if (atexit (delete_temp_files) != 0)
6187 fatal_error ("atexit failed");
6189 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
6190 signal (SIGINT, fatal_signal);
6192 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
6193 signal (SIGHUP, fatal_signal);
6195 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
6196 signal (SIGTERM, fatal_signal);
6198 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
6199 signal (SIGPIPE, fatal_signal);
6202 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6203 receive the signal. A different setting is inheritable */
6204 signal (SIGCHLD, SIG_DFL);
6207 /* Allocate the argument vector. */
6210 obstack_init (&obstack);
6212 /* Build multilib_select, et. al from the separate lines that make up each
6213 multilib selection. */
6215 const char *const *q = multilib_raw;
6218 obstack_init (&multilib_obstack);
6219 while ((p = *q++) != (char *) 0)
6220 obstack_grow (&multilib_obstack, p, strlen (p));
6222 obstack_1grow (&multilib_obstack, 0);
6223 multilib_select = XOBFINISH (&multilib_obstack, const char *);
6225 q = multilib_matches_raw;
6226 while ((p = *q++) != (char *) 0)
6227 obstack_grow (&multilib_obstack, p, strlen (p));
6229 obstack_1grow (&multilib_obstack, 0);
6230 multilib_matches = XOBFINISH (&multilib_obstack, const char *);
6232 q = multilib_exclusions_raw;
6233 while ((p = *q++) != (char *) 0)
6234 obstack_grow (&multilib_obstack, p, strlen (p));
6236 obstack_1grow (&multilib_obstack, 0);
6237 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *);
6240 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
6243 obstack_1grow (&multilib_obstack, ' ');
6244 obstack_grow (&multilib_obstack,
6245 multilib_defaults_raw[i],
6246 strlen (multilib_defaults_raw[i]));
6250 obstack_1grow (&multilib_obstack, 0);
6251 multilib_defaults = XOBFINISH (&multilib_obstack, const char *);
6254 #ifdef INIT_ENVIRONMENT
6255 /* Set up any other necessary machine specific environment variables. */
6256 xputenv (INIT_ENVIRONMENT);
6259 /* Make a table of what switches there are (switches, n_switches).
6260 Make a table of specified input files (infiles, n_infiles).
6261 Decode switches that are handled locally. */
6263 process_command (decoded_options_count, decoded_options);
6265 /* Initialize the vector of specs to just the default.
6266 This means one element containing 0s, as a terminator. */
6268 compilers = XNEWVAR (struct compiler, sizeof default_compilers);
6269 memcpy (compilers, default_compilers, sizeof default_compilers);
6270 n_compilers = n_default_compilers;
6272 /* Read specs from a file if there is one. */
6274 machine_suffix = concat (spec_machine, dir_separator_str,
6275 spec_version, dir_separator_str, NULL);
6276 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6278 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true);
6279 /* Read the specs file unless it is a default one. */
6280 if (specs_file != 0 && strcmp (specs_file, "specs"))
6281 read_specs (specs_file, TRUE);
6285 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6286 for any override of as, ld and libraries. */
6287 specs_file = (char *) alloca (strlen (standard_exec_prefix)
6288 + strlen (just_machine_suffix) + sizeof ("specs"));
6290 strcpy (specs_file, standard_exec_prefix);
6291 strcat (specs_file, just_machine_suffix);
6292 strcat (specs_file, "specs");
6293 if (access (specs_file, R_OK) == 0)
6294 read_specs (specs_file, TRUE);
6296 /* Process any configure-time defaults specified for the command line
6297 options, via OPTION_DEFAULT_SPECS. */
6298 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6299 do_option_spec (option_default_specs[i].name,
6300 option_default_specs[i].spec);
6302 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6303 of the command line. */
6305 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6306 do_self_spec (driver_self_specs[i]);
6310 enum save_temps save;
6312 if (!compare_debug_second)
6314 n_switches_debug_check[1] = n_switches;
6315 n_switches_alloc_debug_check[1] = n_switches_alloc;
6316 switches_debug_check[1] = XDUPVEC (struct switchstr, switches,
6319 do_self_spec ("%:compare-debug-self-opt()");
6320 n_switches_debug_check[0] = n_switches;
6321 n_switches_alloc_debug_check[0] = n_switches_alloc;
6322 switches_debug_check[0] = switches;
6324 n_switches = n_switches_debug_check[1];
6325 n_switches_alloc = n_switches_alloc_debug_check[1];
6326 switches = switches_debug_check[1];
6329 /* Avoid crash when computing %j in this early. */
6330 save = save_temps_flag;
6331 save_temps_flag = SAVE_TEMPS_NONE;
6333 compare_debug = -compare_debug;
6334 do_self_spec ("%:compare-debug-self-opt()");
6336 save_temps_flag = save;
6338 if (!compare_debug_second)
6340 n_switches_debug_check[1] = n_switches;
6341 n_switches_alloc_debug_check[1] = n_switches_alloc;
6342 switches_debug_check[1] = switches;
6343 compare_debug = -compare_debug;
6344 n_switches = n_switches_debug_check[0];
6345 n_switches_alloc = n_switches_debug_check[0];
6346 switches = switches_debug_check[0];
6350 /* If not cross-compiling, look for executables in the standard
6352 if (*cross_compile == '0')
6354 if (*md_exec_prefix)
6356 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6357 PREFIX_PRIORITY_LAST, 0, 0);
6361 /* Process sysroot_suffix_spec. */
6362 if (*sysroot_suffix_spec != 0
6363 && do_spec_2 (sysroot_suffix_spec) == 0)
6365 if (VEC_length (const_char_p, argbuf) > 1)
6366 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6367 else if (VEC_length (const_char_p, argbuf) == 1)
6368 target_sysroot_suffix = xstrdup (VEC_last (const_char_p, argbuf));
6371 #ifdef HAVE_LD_SYSROOT
6372 /* Pass the --sysroot option to the linker, if it supports that. If
6373 there is a sysroot_suffix_spec, it has already been processed by
6374 this point, so target_system_root really is the system root we
6376 if (target_system_root)
6378 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6379 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
6380 set_spec ("link", XOBFINISH (&obstack, const char *));
6384 /* Process sysroot_hdrs_suffix_spec. */
6385 if (*sysroot_hdrs_suffix_spec != 0
6386 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6388 if (VEC_length (const_char_p, argbuf) > 1)
6389 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6390 else if (VEC_length (const_char_p, argbuf) == 1)
6391 target_sysroot_hdrs_suffix = xstrdup (VEC_last (const_char_p, argbuf));
6394 /* Look for startfiles in the standard places. */
6395 if (*startfile_prefix_spec != 0
6396 && do_spec_2 (startfile_prefix_spec) == 0
6397 && do_spec_1 (" ", 0, NULL) == 0)
6401 FOR_EACH_VEC_ELT (const_char_p, argbuf, ndx, arg)
6402 add_sysrooted_prefix (&startfile_prefixes, arg, "BINUTILS",
6403 PREFIX_PRIORITY_LAST, 0, 1);
6405 /* We should eventually get rid of all these and stick to
6406 startfile_prefix_spec exclusively. */
6407 else if (*cross_compile == '0' || target_system_root)
6409 if (*md_startfile_prefix)
6410 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6411 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6413 if (*md_startfile_prefix_1)
6414 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6415 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6417 /* If standard_startfile_prefix is relative, base it on
6418 standard_exec_prefix. This lets us move the installed tree
6419 as a unit. If GCC_EXEC_PREFIX is defined, base
6420 standard_startfile_prefix on that as well.
6422 If the prefix is relative, only search it for native compilers;
6423 otherwise we will search a directory containing host libraries. */
6424 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
6425 add_sysrooted_prefix (&startfile_prefixes,
6426 standard_startfile_prefix, "BINUTILS",
6427 PREFIX_PRIORITY_LAST, 0, 1);
6428 else if (*cross_compile == '0')
6430 add_prefix (&startfile_prefixes,
6431 concat (gcc_exec_prefix
6432 ? gcc_exec_prefix : standard_exec_prefix,
6434 standard_startfile_prefix, NULL),
6435 NULL, PREFIX_PRIORITY_LAST, 0, 1);
6438 /* Sysrooted prefixes are relocated because target_system_root is
6439 also relocated by gcc_exec_prefix. */
6440 if (*standard_startfile_prefix_1)
6441 add_sysrooted_prefix (&startfile_prefixes,
6442 standard_startfile_prefix_1, "BINUTILS",
6443 PREFIX_PRIORITY_LAST, 0, 1);
6444 if (*standard_startfile_prefix_2)
6445 add_sysrooted_prefix (&startfile_prefixes,
6446 standard_startfile_prefix_2, "BINUTILS",
6447 PREFIX_PRIORITY_LAST, 0, 1);
6450 /* Process any user specified specs in the order given on the command
6452 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6454 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6456 read_specs (filename ? filename : uptr->filename, FALSE);
6459 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6460 if (gcc_exec_prefix)
6461 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6462 spec_version, dir_separator_str, NULL);
6464 /* Now we have the specs.
6465 Set the `valid' bits for switches that match anything in any spec. */
6467 validate_all_switches ();
6469 /* Now that we have the switches and the specs, set
6470 the subdirectory based on the options. */
6471 set_multilib_dir ();
6473 /* Set up to remember the pathname of gcc and any options
6474 needed for collect. We use argv[0] instead of progname because
6475 we need the complete pathname. */
6476 obstack_init (&collect_obstack);
6477 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6478 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6479 xputenv (XOBFINISH (&collect_obstack, char *));
6481 /* Set up to remember the pathname of the lto wrapper. */
6483 lto_wrapper_file = find_a_file (&exec_prefixes, "lto-wrapper", X_OK, false);
6484 if (lto_wrapper_file)
6486 lto_wrapper_spec = lto_wrapper_file;
6487 obstack_init (&collect_obstack);
6488 obstack_grow (&collect_obstack, "COLLECT_LTO_WRAPPER=",
6489 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
6490 obstack_grow (&collect_obstack, lto_wrapper_spec,
6491 strlen (lto_wrapper_spec) + 1);
6492 xputenv (XOBFINISH (&collect_obstack, char *));
6495 /* Warn about any switches that no pass was interested in. */
6497 for (i = 0; (int) i < n_switches; i++)
6498 if (! switches[i].validated)
6499 error ("unrecognized option %<-%s%>", switches[i].part1);
6501 /* Obey some of the options. */
6503 if (print_search_dirs)
6505 printf (_("install: %s%s\n"),
6506 gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
6507 gcc_exec_prefix ? "" : machine_suffix);
6508 printf (_("programs: %s\n"),
6509 build_search_list (&exec_prefixes, "", false, false));
6510 printf (_("libraries: %s\n"),
6511 build_search_list (&startfile_prefixes, "", false, true));
6515 if (print_file_name)
6517 printf ("%s\n", find_file (print_file_name));
6521 if (print_prog_name)
6523 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6524 printf ("%s\n", (newname ? newname : print_prog_name));
6528 if (print_multi_lib)
6530 print_multilib_info ();
6534 if (print_multi_directory)
6536 if (multilib_dir == NULL)
6539 printf ("%s\n", multilib_dir);
6545 if (target_system_root)
6547 if (target_sysroot_suffix)
6548 printf ("%s%s\n", target_system_root, target_sysroot_suffix);
6550 printf ("%s\n", target_system_root);
6555 if (print_multi_os_directory)
6557 if (multilib_os_dir == NULL)
6560 printf ("%s\n", multilib_os_dir);
6564 if (print_sysroot_headers_suffix)
6566 if (*sysroot_hdrs_suffix_spec)
6568 printf("%s\n", (target_sysroot_hdrs_suffix
6569 ? target_sysroot_hdrs_suffix
6574 /* The error status indicates that only one set of fixed
6575 headers should be built. */
6576 fatal_error ("not configured with sysroot headers suffix");
6579 if (print_help_list)
6585 printf (_("\nFor bug reporting instructions, please see:\n"));
6586 printf ("%s.\n", bug_report_url);
6591 /* We do not exit here. Instead we have created a fake input file
6592 called 'help-dummy' which needs to be compiled, and we pass this
6593 on the various sub-processes, along with the --help switch.
6594 Ensure their output appears after ours. */
6595 fputc ('\n', stdout);
6601 printf (_("%s %s%s\n"), progname, pkgversion_string,
6603 printf ("Copyright %s 2011 Free Software Foundation, Inc.\n",
6605 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
6606 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
6611 /* We do not exit here. We use the same mechanism of --help to print
6612 the version of the sub-processes. */
6613 fputc ('\n', stdout);
6622 fnotice (stderr, "Target: %s\n", spec_machine);
6623 fnotice (stderr, "Configured with: %s\n", configuration_arguments);
6625 #ifdef THREAD_MODEL_SPEC
6626 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6627 but there's no point in doing all this processing just to get
6628 thread_model back. */
6629 obstack_init (&obstack);
6630 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6631 obstack_1grow (&obstack, '\0');
6632 thrmod = XOBFINISH (&obstack, const char *);
6634 thrmod = thread_model;
6637 fnotice (stderr, "Thread model: %s\n", thrmod);
6639 /* compiler_version is truncated at the first space when initialized
6640 from version string, so truncate version_string at the first space
6641 before comparing. */
6642 for (n = 0; version_string[n]; n++)
6643 if (version_string[n] == ' ')
6646 if (! strncmp (version_string, compiler_version, n)
6647 && compiler_version[n] == 0)
6648 fnotice (stderr, "gcc version %s %s\n", version_string,
6651 fnotice (stderr, "gcc driver version %s %sexecuting gcc version %s\n",
6652 version_string, pkgversion_string, compiler_version);
6658 if (n_infiles == added_libraries)
6659 fatal_error ("no input files");
6664 /* Make a place to record the compiler output file names
6665 that correspond to the input files. */
6668 i += lang_specific_extra_outfiles;
6669 outfiles = XCNEWVEC (const char *, i);
6671 /* Record which files were specified explicitly as link input. */
6673 explicit_link_files = XCNEWVEC (char, n_infiles);
6675 combine_inputs = have_o || flag_wpa;
6677 for (i = 0; (int) i < n_infiles; i++)
6679 const char *name = infiles[i].name;
6680 struct compiler *compiler = lookup_compiler (name,
6682 infiles[i].language);
6684 if (compiler && !(compiler->combinable))
6685 combine_inputs = false;
6687 if (lang_n_infiles > 0 && compiler != input_file_compiler
6688 && infiles[i].language && infiles[i].language[0] != '*')
6689 infiles[i].incompiler = compiler;
6693 input_file_compiler = compiler;
6694 infiles[i].incompiler = compiler;
6698 /* Since there is no compiler for this input file, assume it is a
6700 explicit_link_files[i] = 1;
6701 infiles[i].incompiler = NULL;
6703 infiles[i].compiled = false;
6704 infiles[i].preprocessed = false;
6707 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1)
6708 fatal_error ("cannot specify -o with -c, -S or -E with multiple files");
6710 for (i = 0; (int) i < n_infiles; i++)
6712 int this_file_error = 0;
6714 /* Tell do_spec what to substitute for %i. */
6716 input_file_number = i;
6717 set_input (infiles[i].name);
6719 if (infiles[i].compiled)
6722 /* Use the same thing in %o, unless cp->spec says otherwise. */
6724 outfiles[i] = gcc_input_filename;
6726 /* Figure out which compiler from the file's suffix. */
6729 = lookup_compiler (infiles[i].name, input_filename_length,
6730 infiles[i].language);
6732 if (input_file_compiler)
6734 /* Ok, we found an applicable compiler. Run its spec. */
6736 if (input_file_compiler->spec[0] == '#')
6738 error ("%s: %s compiler not installed on this system",
6739 gcc_input_filename, &input_file_compiler->spec[1]);
6740 this_file_error = 1;
6746 free (debug_check_temp_file[0]);
6747 debug_check_temp_file[0] = NULL;
6749 free (debug_check_temp_file[1]);
6750 debug_check_temp_file[1] = NULL;
6753 value = do_spec (input_file_compiler->spec);
6754 infiles[i].compiled = true;
6756 this_file_error = 1;
6757 else if (compare_debug && debug_check_temp_file[0])
6760 inform (0, "recompiling with -fcompare-debug");
6762 compare_debug = -compare_debug;
6763 n_switches = n_switches_debug_check[1];
6764 n_switches_alloc = n_switches_alloc_debug_check[1];
6765 switches = switches_debug_check[1];
6767 value = do_spec (input_file_compiler->spec);
6769 compare_debug = -compare_debug;
6770 n_switches = n_switches_debug_check[0];
6771 n_switches_alloc = n_switches_alloc_debug_check[0];
6772 switches = switches_debug_check[0];
6776 error ("during -fcompare-debug recompilation");
6777 this_file_error = 1;
6780 gcc_assert (debug_check_temp_file[1]
6781 && filename_cmp (debug_check_temp_file[0],
6782 debug_check_temp_file[1]));
6785 inform (0, "comparing final insns dumps");
6787 if (compare_files (debug_check_temp_file))
6788 this_file_error = 1;
6793 free (debug_check_temp_file[0]);
6794 debug_check_temp_file[0] = NULL;
6796 free (debug_check_temp_file[1]);
6797 debug_check_temp_file[1] = NULL;
6802 /* If this file's name does not contain a recognized suffix,
6803 record it as explicit linker input. */
6806 explicit_link_files[i] = 1;
6808 /* Clear the delete-on-failure queue, deleting the files in it
6809 if this compilation failed. */
6811 if (this_file_error)
6813 delete_failure_queue ();
6816 /* If this compilation succeeded, don't delete those files later. */
6817 clear_failure_queue ();
6820 /* Reset the input file name to the first compile/object file name, for use
6821 with %b in LINK_SPEC. We use the first input file that we can find
6822 a compiler to compile it instead of using infiles.language since for
6823 languages other than C we use aliases that we then lookup later. */
6828 for (i = 0; i < n_infiles ; i++)
6829 if (infiles[i].incompiler
6830 || (infiles[i].language && infiles[i].language[0] != '*'))
6832 set_input (infiles[i].name);
6839 /* Make sure INPUT_FILE_NUMBER points to first available open
6841 input_file_number = n_infiles;
6842 if (lang_specific_pre_link ())
6846 /* Determine if there are any linker input files. */
6847 num_linker_inputs = 0;
6848 for (i = 0; (int) i < n_infiles; i++)
6849 if (explicit_link_files[i] || outfiles[i] != NULL)
6850 num_linker_inputs++;
6852 /* Run ld to link all the compiler output files. */
6854 if (num_linker_inputs > 0 && !seen_error () && print_subprocess_help < 2)
6856 int tmp = execution_count;
6857 #if HAVE_LTO_PLUGIN > 0
6858 #if HAVE_LTO_PLUGIN == 2
6859 const char *fno_use_linker_plugin = "fno-use-linker-plugin";
6861 const char *fuse_linker_plugin = "fuse-linker-plugin";
6865 /* We'll use ld if we can't find collect2. */
6866 if (! strcmp (linker_name_spec, "collect2"))
6868 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false);
6870 linker_name_spec = "ld";
6873 #if HAVE_LTO_PLUGIN > 0
6874 #if HAVE_LTO_PLUGIN == 2
6875 if (!switch_matches (fno_use_linker_plugin,
6876 fno_use_linker_plugin + strlen (fno_use_linker_plugin), 0))
6878 if (switch_matches (fuse_linker_plugin,
6879 fuse_linker_plugin + strlen (fuse_linker_plugin), 0))
6882 linker_plugin_file_spec = find_a_file (&exec_prefixes,
6883 LTOPLUGINSONAME, R_OK,
6885 if (!linker_plugin_file_spec)
6886 fatal_error ("-fuse-linker-plugin, but " LTOPLUGINSONAME " not found");
6889 lto_gcc_spec = argv[0];
6891 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6893 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false);
6894 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true);
6896 if (print_subprocess_help == 1)
6898 printf (_("\nLinker options\n==============\n\n"));
6899 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
6900 " to the linker.\n\n"));
6903 value = do_spec (link_command_spec);
6906 linker_was_run = (tmp != execution_count);
6909 /* If options said don't run linker,
6910 complain about input files to be given to the linker. */
6912 if (! linker_was_run && !seen_error ())
6913 for (i = 0; (int) i < n_infiles; i++)
6914 if (explicit_link_files[i]
6915 && !(infiles[i].language && infiles[i].language[0] == '*'))
6916 warning (0, "%s: linker input file unused because linking not done",
6919 /* Delete some or all of the temporary files we made. */
6922 delete_failure_queue ();
6923 delete_temp_files ();
6925 if (print_help_list)
6927 printf (("\nFor bug reporting instructions, please see:\n"));
6928 printf ("%s\n", bug_report_url);
6932 return (signal_count != 0 ? 2
6933 : seen_error () ? (pass_exit_codes ? greatest_status : 1)
6937 /* Find the proper compilation spec for the file name NAME,
6938 whose length is LENGTH. LANGUAGE is the specified language,
6939 or 0 if this file is to be passed to the linker. */
6941 static struct compiler *
6942 lookup_compiler (const char *name, size_t length, const char *language)
6944 struct compiler *cp;
6946 /* If this was specified by the user to be a linker input, indicate that. */
6947 if (language != 0 && language[0] == '*')
6950 /* Otherwise, look for the language, if one is spec'd. */
6953 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6954 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6957 error ("language %s not recognized", language);
6961 /* Look for a suffix. */
6962 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6964 if (/* The suffix `-' matches only the file name `-'. */
6965 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6966 || (strlen (cp->suffix) < length
6967 /* See if the suffix matches the end of NAME. */
6968 && !strcmp (cp->suffix,
6969 name + length - strlen (cp->suffix))
6974 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6975 /* Look again, but case-insensitively this time. */
6977 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6979 if (/* The suffix `-' matches only the file name `-'. */
6980 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6981 || (strlen (cp->suffix) < length
6982 /* See if the suffix matches the end of NAME. */
6983 && ((!strcmp (cp->suffix,
6984 name + length - strlen (cp->suffix))
6985 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6986 && !strcasecmp (cp->suffix,
6987 name + length - strlen (cp->suffix)))
6993 if (cp >= compilers)
6995 if (cp->spec[0] != '@')
6996 /* A non-alias entry: return it. */
6999 /* An alias entry maps a suffix to a language.
7000 Search for the language; pass 0 for NAME and LENGTH
7001 to avoid infinite recursion if language not found. */
7002 return lookup_compiler (NULL, 0, cp->spec + 1);
7008 save_string (const char *s, int len)
7010 char *result = XNEWVEC (char, len + 1);
7012 memcpy (result, s, len);
7018 pfatal_with_name (const char *name)
7020 perror_with_name (name);
7021 delete_temp_files ();
7026 perror_with_name (const char *name)
7028 error ("%s: %m", name);
7032 validate_switches_from_spec (const char *spec)
7034 const char *p = spec;
7037 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
7038 /* We have a switch spec. */
7039 p = validate_switches (p + 1);
7043 validate_all_switches (void)
7045 struct compiler *comp;
7046 struct spec_list *spec;
7048 for (comp = compilers; comp->spec; comp++)
7049 validate_switches_from_spec (comp->spec);
7051 /* Look through the linked list of specs read from the specs file. */
7052 for (spec = specs; spec; spec = spec->next)
7053 validate_switches_from_spec (*spec->ptr_spec);
7055 validate_switches_from_spec (link_command_spec);
7058 /* Look at the switch-name that comes after START
7059 and mark as valid all supplied switches that match it. */
7062 validate_switches (const char *start)
7064 const char *p = start;
7068 bool suffix = false;
7069 bool starred = false;
7071 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7080 if (*p == '.' || *p == ',')
7084 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
7085 || *p == ',' || *p == '.' || *p == '@')
7090 starred = true, p++;
7096 /* Mark all matching switches as valid. */
7097 for (i = 0; i < n_switches; i++)
7098 if (!strncmp (switches[i].part1, atom, len)
7099 && (starred || switches[i].part1[len] == 0))
7100 switches[i].validated = 1;
7104 if (*p && (p[-1] == '|' || p[-1] == '&'))
7107 if (*p && p[-1] == ':')
7109 while (*p && *p != ';' && *p != '}')
7114 if (*p == '{' || *p == '<')
7115 p = validate_switches (p+1);
7116 else if (p[0] == 'W' && p[1] == '{')
7117 p = validate_switches (p+2);
7124 if (*p && p[-1] == ';')
7138 static struct mdswitchstr *mdswitches;
7139 static int n_mdswitches;
7141 /* Check whether a particular argument was used. The first time we
7142 canonicalize the switches to keep only the ones we care about. */
7145 used_arg (const char *p, int len)
7150 const char *replace;
7155 static struct mswitchstr *mswitches;
7156 static int n_mswitches;
7161 struct mswitchstr *matches;
7165 /* Break multilib_matches into the component strings of string
7166 and replacement string. */
7167 for (q = multilib_matches; *q != '\0'; q++)
7172 = (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
7174 q = multilib_matches;
7183 fatal_error ("multilib spec %qs is invalid",
7188 matches[i].len = q - matches[i].str;
7190 matches[i].replace = ++q;
7191 while (*q != ';' && *q != '\0')
7194 goto invalid_matches;
7197 matches[i].rep_len = q - matches[i].replace;
7203 /* Now build a list of the replacement string for switches that we care
7204 about. Make sure we allocate at least one entry. This prevents
7205 xmalloc from calling fatal, and prevents us from re-executing this
7208 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1));
7209 for (i = 0; i < n_switches; i++)
7210 if ((switches[i].live_cond & SWITCH_IGNORE) == 0)
7212 int xlen = strlen (switches[i].part1);
7213 for (j = 0; j < cnt; j++)
7214 if (xlen == matches[j].len
7215 && ! strncmp (switches[i].part1, matches[j].str, xlen))
7217 mswitches[n_mswitches].str = matches[j].replace;
7218 mswitches[n_mswitches].len = matches[j].rep_len;
7219 mswitches[n_mswitches].replace = (char *) 0;
7220 mswitches[n_mswitches].rep_len = 0;
7226 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7227 on the command line nor any options mutually incompatible with
7229 for (i = 0; i < n_mdswitches; i++)
7233 for (q = multilib_options; *q != '\0'; q++)
7239 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
7240 || strchr (" /", q[mdswitches[i].len]) == NULL)
7242 while (*q != ' ' && *q != '/' && *q != '\0')
7249 if (*q != ' ' && *q != '\0')
7251 while (*r != ' ' && *r != '\0')
7254 while (*q != ' ' && *q != '/' && *q != '\0')
7257 if (used_arg (r, q - r))
7262 mswitches[n_mswitches].str = mdswitches[i].str;
7263 mswitches[n_mswitches].len = mdswitches[i].len;
7264 mswitches[n_mswitches].replace = (char *) 0;
7265 mswitches[n_mswitches].rep_len = 0;
7278 for (i = 0; i < n_mswitches; i++)
7279 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
7286 default_arg (const char *p, int len)
7290 for (i = 0; i < n_mdswitches; i++)
7291 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
7297 /* Work out the subdirectory to use based on the options. The format of
7298 multilib_select is a list of elements. Each element is a subdirectory
7299 name followed by a list of options followed by a semicolon. The format
7300 of multilib_exclusions is the same, but without the preceding
7301 directory. First gcc will check the exclusions, if none of the options
7302 beginning with an exclamation point are present, and all of the other
7303 options are present, then we will ignore this completely. Passing
7304 that, gcc will consider each multilib_select in turn using the same
7305 rules for matching the options. If a match is found, that subdirectory
7309 set_multilib_dir (void)
7312 unsigned int this_path_len;
7313 const char *this_path, *this_arg;
7314 const char *start, *end;
7316 int ok, ndfltok, first;
7319 start = multilib_defaults;
7320 while (*start == ' ' || *start == '\t')
7322 while (*start != '\0')
7325 while (*start != ' ' && *start != '\t' && *start != '\0')
7327 while (*start == ' ' || *start == '\t')
7335 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches);
7336 for (start = multilib_defaults; *start != '\0'; start = end + 1)
7338 while (*start == ' ' || *start == '\t')
7344 for (end = start + 1;
7345 *end != ' ' && *end != '\t' && *end != '\0'; end++)
7348 obstack_grow (&multilib_obstack, start, end - start);
7349 obstack_1grow (&multilib_obstack, 0);
7350 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *);
7351 mdswitches[i++].len = end - start;
7358 p = multilib_exclusions;
7361 /* Ignore newlines. */
7368 /* Check the arguments. */
7375 fatal_error ("multilib exclusions %qs is invalid",
7376 multilib_exclusions);
7386 while (*p != ' ' && *p != ';')
7389 goto invalid_exclusions;
7393 if (*this_arg != '!')
7401 ok = used_arg (this_arg, p - this_arg);
7416 p = multilib_select;
7419 /* Ignore newlines. */
7426 /* Get the initial path. */
7433 fatal_error ("multilib select %qs is invalid",
7438 this_path_len = p - this_path;
7440 /* Check the arguments. */
7447 goto invalid_select;
7456 while (*p != ' ' && *p != ';')
7459 goto invalid_select;
7463 if (*this_arg != '!')
7471 /* If this is a default argument, we can just ignore it.
7472 This is true even if this_arg begins with '!'. Beginning
7473 with '!' does not mean that this argument is necessarily
7474 inappropriate for this library: it merely means that
7475 there is a more specific library which uses this
7476 argument. If this argument is a default, we need not
7477 consider that more specific library. */
7478 ok = used_arg (this_arg, p - this_arg);
7485 if (default_arg (this_arg, p - this_arg))
7494 if (this_path_len != 1
7495 || this_path[0] != '.')
7497 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1);
7500 strncpy (new_multilib_dir, this_path, this_path_len);
7501 new_multilib_dir[this_path_len] = '\0';
7502 q = strchr (new_multilib_dir, ':');
7505 multilib_dir = new_multilib_dir;
7512 const char *q = this_path, *end = this_path + this_path_len;
7514 while (q < end && *q != ':')
7518 char *new_multilib_os_dir = XNEWVEC (char, end - q);
7519 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
7520 new_multilib_os_dir[end - q - 1] = '\0';
7521 multilib_os_dir = new_multilib_os_dir;
7529 if (multilib_dir == NULL && multilib_os_dir != NULL
7530 && strcmp (multilib_os_dir, ".") == 0)
7532 free (CONST_CAST (char *, multilib_os_dir));
7533 multilib_os_dir = NULL;
7535 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7536 multilib_os_dir = multilib_dir;
7539 /* Print out the multiple library subdirectory selection
7540 information. This prints out a series of lines. Each line looks
7541 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7542 required. Only the desired options are printed out, the negative
7543 matches. The options are print without a leading dash. There are
7544 no spaces to make it easy to use the information in the shell.
7545 Each subdirectory is printed only once. This assumes the ordering
7546 generated by the genmultilib script. Also, we leave out ones that match
7550 print_multilib_info (void)
7552 const char *p = multilib_select;
7553 const char *last_path = 0, *this_path;
7555 unsigned int last_path_len = 0;
7560 /* Ignore newlines. */
7567 /* Get the initial path. */
7574 fatal_error ("multilib select %qs is invalid", multilib_select);
7580 /* When --disable-multilib was used but target defines
7581 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7582 to find multilib_os_dir, so skip them from output. */
7583 if (this_path[0] == '.' && this_path[1] == ':')
7586 /* Check for matches with the multilib_exclusions. We don't bother
7587 with the '!' in either list. If any of the exclusion rules match
7588 all of its options with the select rule, we skip it. */
7590 const char *e = multilib_exclusions;
7591 const char *this_arg;
7596 /* Ignore newlines. */
7603 /* Check the arguments. */
7612 fatal_error ("multilib exclusion %qs is invalid",
7613 multilib_exclusions);
7624 while (*e != ' ' && *e != ';')
7627 goto invalid_exclusion;
7635 int len = e - this_arg;
7638 goto invalid_select;
7642 while (*q != ' ' && *q != ';')
7645 goto invalid_select;
7649 if (! strncmp (arg, this_arg,
7650 (len < q - arg) ? q - arg : len)
7651 || default_arg (this_arg, e - this_arg))
7681 /* If this is a duplicate, skip it. */
7682 skip = (last_path != 0
7683 && (unsigned int) (p - this_path) == last_path_len
7684 && ! filename_ncmp (last_path, this_path, last_path_len));
7686 last_path = this_path;
7687 last_path_len = p - this_path;
7690 /* If this directory requires any default arguments, we can skip
7691 it. We will already have printed a directory identical to
7692 this one which does not require that default argument. */
7703 goto invalid_select;
7710 while (*q != ' ' && *q != ';')
7713 goto invalid_select;
7718 && default_arg (arg, q - arg))
7733 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7744 goto invalid_select;
7752 use_arg = *p != '!';
7757 while (*p != ' ' && *p != ';')
7760 goto invalid_select;
7772 /* If there are extra options, print them now. */
7773 if (multilib_extra && *multilib_extra)
7775 int print_at = TRUE;
7778 for (q = multilib_extra; *q != '\0'; q++)
7799 /* getenv built-in spec function.
7801 Returns the value of the environment variable given by its first
7802 argument, concatenated with the second argument. If the
7803 environment variable is not defined, a fatal error is issued. */
7806 getenv_spec_function (int argc, const char **argv)
7816 value = getenv (argv[0]);
7818 fatal_error ("environment variable %qs not defined", argv[0]);
7820 /* We have to escape every character of the environment variable so
7821 they are not interpreted as active spec characters. A
7822 particularly painful case is when we are reading a variable
7823 holding a windows path complete with \ separators. */
7824 len = strlen (value) * 2 + strlen (argv[1]) + 1;
7825 result = XNEWVAR (char, len);
7826 for (ptr = result; *value; ptr += 2)
7832 strcpy (ptr, argv[1]);
7837 /* if-exists built-in spec function.
7839 Checks to see if the file specified by the absolute pathname in
7840 ARGS exists. Returns that pathname if found.
7842 The usual use for this function is to check for a library file
7843 (whose name has been expanded with %s). */
7846 if_exists_spec_function (int argc, const char **argv)
7848 /* Must have only one argument. */
7849 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7855 /* if-exists-else built-in spec function.
7857 This is like if-exists, but takes an additional argument which
7858 is returned if the first argument does not exist. */
7861 if_exists_else_spec_function (int argc, const char **argv)
7863 /* Must have exactly two arguments. */
7867 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7873 /* replace-outfile built-in spec function.
7875 This looks for the first argument in the outfiles array's name and
7876 replaces it with the second argument. */
7879 replace_outfile_spec_function (int argc, const char **argv)
7882 /* Must have exactly two arguments. */
7886 for (i = 0; i < n_infiles; i++)
7888 if (outfiles[i] && !filename_cmp (outfiles[i], argv[0]))
7889 outfiles[i] = xstrdup (argv[1]);
7894 /* remove-outfile built-in spec function.
7896 * This looks for the first argument in the outfiles array's name and
7900 remove_outfile_spec_function (int argc, const char **argv)
7903 /* Must have exactly one argument. */
7907 for (i = 0; i < n_infiles; i++)
7909 if (outfiles[i] && !filename_cmp (outfiles[i], argv[0]))
7915 /* Given two version numbers, compares the two numbers.
7916 A version number must match the regular expression
7917 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
7920 compare_version_strings (const char *v1, const char *v2)
7925 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
7926 REG_EXTENDED | REG_NOSUB) != 0)
7928 rresult = regexec (&r, v1, 0, NULL, 0);
7929 if (rresult == REG_NOMATCH)
7930 fatal_error ("invalid version number %qs", v1);
7931 else if (rresult != 0)
7933 rresult = regexec (&r, v2, 0, NULL, 0);
7934 if (rresult == REG_NOMATCH)
7935 fatal_error ("invalid version number %qs", v2);
7936 else if (rresult != 0)
7939 return strverscmp (v1, v2);
7943 /* version_compare built-in spec function.
7945 This takes an argument of the following form:
7947 <comparison-op> <arg1> [<arg2>] <switch> <result>
7949 and produces "result" if the comparison evaluates to true,
7950 and nothing if it doesn't.
7952 The supported <comparison-op> values are:
7954 >= true if switch is a later (or same) version than arg1
7956 < true if switch is an earlier version than arg1
7958 >< true if switch is arg1 or later, and earlier than arg2
7959 <> true if switch is earlier than arg1 or is arg2 or later
7961 If the switch is not present, the condition is false unless
7962 the first character of the <comparison-op> is '!'.
7965 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
7966 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
7969 version_compare_spec_function (int argc, const char **argv)
7973 const char *switch_value = NULL;
7978 fatal_error ("too few arguments to %%:version-compare");
7979 if (argv[0][0] == '\0')
7981 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!')
7983 if (argc != nargs + 3)
7984 fatal_error ("too many arguments to %%:version-compare");
7986 switch_len = strlen (argv[nargs + 1]);
7987 for (i = 0; i < n_switches; i++)
7988 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len)
7989 && check_live_switch (i, switch_len))
7990 switch_value = switches[i].part1 + switch_len;
7992 if (switch_value == NULL)
7996 comp1 = compare_version_strings (switch_value, argv[1]);
7998 comp2 = compare_version_strings (switch_value, argv[2]);
8000 comp2 = -1; /* This value unused. */
8003 switch (argv[0][0] << 8 | argv[0][1])
8005 case '>' << 8 | '=':
8006 result = comp1 >= 0;
8008 case '!' << 8 | '<':
8009 result = comp1 >= 0 || switch_value == NULL;
8014 case '!' << 8 | '>':
8015 result = comp1 < 0 || switch_value == NULL;
8017 case '>' << 8 | '<':
8018 result = comp1 >= 0 && comp2 < 0;
8020 case '<' << 8 | '>':
8021 result = comp1 < 0 || comp2 >= 0;
8025 fatal_error ("unknown operator %qs in %%:version-compare", argv[0]);
8030 return argv[nargs + 2];
8033 /* %:include builtin spec function. This differs from %include in that it
8034 can be nested inside a spec, and thus be conditionalized. It takes
8035 one argument, the filename, and looks for it in the startfile path.
8036 The result is always NULL, i.e. an empty expansion. */
8039 include_spec_function (int argc, const char **argv)
8046 file = find_a_file (&startfile_prefixes, argv[0], R_OK, true);
8047 read_specs (file ? file : argv[0], FALSE);
8052 /* %:find-file spec function. This function replaces its argument by
8053 the file found thru find_file, that is the -print-file-name gcc
8056 find_file_spec_function (int argc, const char **argv)
8063 file = find_file (argv[0]);
8068 /* %:find-plugindir spec function. This function replaces its argument
8069 by the -iplugindir=<dir> option. `dir' is found thru find_file, that
8070 is the -print-file-name gcc program option. */
8072 find_plugindir_spec_function (int argc, const char **argv ATTRIBUTE_UNUSED)
8079 option = concat ("-iplugindir=", find_file ("plugin"), NULL);
8084 /* %:print-asm-header spec function. Print a banner to say that the
8085 following output is from the assembler. */
8088 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED,
8089 const char **argv ATTRIBUTE_UNUSED)
8091 printf (_("Assembler options\n=================\n\n"));
8092 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
8097 /* Compute a timestamp to initialize flag_random_seed. */
8100 get_local_tick (void)
8104 /* Get some more or less random data. */
8105 #ifdef HAVE_GETTIMEOFDAY
8109 gettimeofday (&tv, NULL);
8110 ret = tv.tv_sec * 1000 + tv.tv_usec / 1000;
8114 time_t now = time (NULL);
8116 if (now != (time_t)-1)
8117 ret = (unsigned) now;
8124 /* %:compare-debug-dump-opt spec function. Save the last argument,
8125 expected to be the last -fdump-final-insns option, or generate a
8129 compare_debug_dump_opt_spec_function (int arg,
8130 const char **argv ATTRIBUTE_UNUSED)
8135 static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3];
8138 fatal_error ("too many arguments to %%:compare-debug-dump-opt");
8140 do_spec_2 ("%{fdump-final-insns=*:%*}");
8141 do_spec_1 (" ", 0, NULL);
8143 if (VEC_length (const_char_p, argbuf) > 0
8144 && strcmp (argv[VEC_length (const_char_p, argbuf) - 1], "."))
8149 name = xstrdup (argv[VEC_length (const_char_p, argbuf) - 1]);
8154 const char *ext = NULL;
8156 if (VEC_length (const_char_p, argbuf) > 0)
8158 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
8161 else if (!compare_debug)
8164 do_spec_2 ("%g.gkd");
8166 do_spec_1 (" ", 0, NULL);
8168 gcc_assert (VEC_length (const_char_p, argbuf) > 0);
8170 name = concat (VEC_last (const_char_p, argbuf), ext, NULL);
8172 ret = concat ("-fdump-final-insns=", name, NULL);
8175 which = compare_debug < 0;
8176 debug_check_temp_file[which] = name;
8180 unsigned HOST_WIDE_INT value = get_local_tick () ^ getpid ();
8182 sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value);
8186 ret = concat ("%{!frandom-seed=*:-frandom-seed=", random_seed, "} ",
8195 static const char *debug_auxbase_opt;
8197 /* %:compare-debug-self-opt spec function. Expands to the options
8198 that are to be passed in the second compilation of
8202 compare_debug_self_opt_spec_function (int arg,
8203 const char **argv ATTRIBUTE_UNUSED)
8206 fatal_error ("too many arguments to %%:compare-debug-self-opt");
8208 if (compare_debug >= 0)
8211 do_spec_2 ("%{c|S:%{o*:%*}}");
8212 do_spec_1 (" ", 0, NULL);
8214 if (VEC_length (const_char_p, argbuf) > 0)
8215 debug_auxbase_opt = concat ("-auxbase-strip ",
8216 VEC_last (const_char_p, argbuf),
8219 debug_auxbase_opt = NULL;
8222 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
8223 %<fdump-final-insns=* -w -S -o %j \
8224 %{!fcompare-debug-second:-fcompare-debug-second} \
8225 ", compare_debug_opt, NULL);
8228 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
8229 options that are to be passed in the second compilation of
8230 compare-debug. It expects, as an argument, the basename of the
8231 current input file name, with the .gk suffix appended to it. */
8234 compare_debug_auxbase_opt_spec_function (int arg,
8241 fatal_error ("too few arguments to %%:compare-debug-auxbase-opt");
8244 fatal_error ("too many arguments to %%:compare-debug-auxbase-opt");
8246 if (compare_debug >= 0)
8249 len = strlen (argv[0]);
8250 if (len < 3 || strcmp (argv[0] + len - 3, ".gk") != 0)
8251 fatal_error ("argument to %%:compare-debug-auxbase-opt "
8252 "does not end in .gk");
8254 if (debug_auxbase_opt)
8255 return debug_auxbase_opt;
8257 #define OPT "-auxbase "
8260 name = (char*) xmalloc (sizeof (OPT) + len);
8261 memcpy (name, OPT, sizeof (OPT) - 1);
8262 memcpy (name + sizeof (OPT) - 1, argv[0], len);
8263 name[sizeof (OPT) - 1 + len] = '\0';
8270 /* %:pass-through-libs spec function. Finds all -l options and input
8271 file names in the lib spec passed to it, and makes a list of them
8272 prepended with the plugin option to cause them to be passed through
8273 to the final link after all the new object files have been added. */
8276 pass_through_libs_spec_func (int argc, const char **argv)
8278 char *prepended = xstrdup (" ");
8280 /* Shlemiel the painter's algorithm. Innately horrible, but at least
8281 we know that there will never be more than a handful of strings to
8282 concat, and it's only once per run, so it's not worth optimising. */
8283 for (n = 0; n < argc; n++)
8285 char *old = prepended;
8286 /* Anything that isn't an option is a full path to an output
8287 file; pass it through if it ends in '.a'. Among options,
8289 if (argv[n][0] == '-' && argv[n][1] == 'l')
8291 const char *lopt = argv[n] + 2;
8292 /* Handle both joined and non-joined -l options. If for any
8293 reason there's a trailing -l with no joined or following
8294 arg just discard it. */
8295 if (!*lopt && ++n >= argc)
8299 prepended = concat (prepended, "-plugin-opt=-pass-through=-l",
8302 else if (!strcmp (".a", argv[n] + strlen (argv[n]) - 2))
8304 prepended = concat (prepended, "-plugin-opt=-pass-through=",
8305 argv[n], " ", NULL);
8307 if (prepended != old)