1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
5 Free Software Foundation, Inc.
7 This file is part of GCC.
9 GCC is free software; you can redistribute it and/or modify it under
10 the terms of the GNU General Public License as published by the Free
11 Software Foundation; either version 3, or (at your option) any later
14 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
15 WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 You should have received a copy of the GNU General Public License
20 along with GCC; see the file COPYING3. If not see
21 <http://www.gnu.org/licenses/>. */
23 /* This program is the user interface to the C compiler and possibly to
24 other compilers. It is used because compilation is a complicated procedure
25 which involves running several programs and passing temporary files between
26 them, forwarding the users switches to those programs selectively,
27 and deleting the temporary files at the end.
29 CC recognizes how to compile each input file by suffixes in the file names.
30 Once it knows which kind of compilation to perform, the procedure for
31 compilation is specified by a string called a "spec". */
35 #include "coretypes.h"
36 #include "multilib.h" /* before tm.h */
43 #include "diagnostic.h"
48 #include "filenames.h"
50 /* By default there is no special suffix for target executables. */
51 /* FIXME: when autoconf is fixed, remove the host check - dj */
52 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
53 #define HAVE_TARGET_EXECUTABLE_SUFFIX
56 /* By default there is no special suffix for host executables. */
57 #ifdef HOST_EXECUTABLE_SUFFIX
58 #define HAVE_HOST_EXECUTABLE_SUFFIX
60 #define HOST_EXECUTABLE_SUFFIX ""
63 /* By default, the suffix for target object files is ".o". */
64 #ifdef TARGET_OBJECT_SUFFIX
65 #define HAVE_TARGET_OBJECT_SUFFIX
67 #define TARGET_OBJECT_SUFFIX ".o"
70 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
72 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
73 #ifndef LIBRARY_PATH_ENV
74 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
77 /* If a stage of compilation returns an exit status >= 1,
78 compilation of that file ceases. */
80 #define MIN_FATAL_STATUS 1
82 /* Flag set by cppspec.c to 1. */
85 /* Flag set to nonzero if an @file argument has been supplied to gcc. */
86 static bool at_file_supplied;
88 /* Definition of string containing the arguments given to configure. */
89 #include "configargs.h"
91 /* Flag saying to print the command line options understood by gcc and its
94 static int print_help_list;
96 /* Flag saying to print the version of gcc and its sub-processes. */
98 static int print_version;
100 /* Flag indicating whether we should ONLY print the command and
101 arguments (like verbose_flag) without executing the command.
102 Displayed arguments are quoted so that the generated command
103 line is suitable for execution. This is intended for use in
104 shell scripts to capture the driver-generated command line. */
105 static int verbose_only_flag;
107 /* Flag indicating how to print command line options of sub-processes. */
109 static int print_subprocess_help;
111 /* Whether we should report subprocess execution times to a file. */
113 FILE *report_times_to_file = NULL;
115 /* Nonzero means place this string before uses of /, so that include
116 and library files can be found in an alternate location. */
118 #ifdef TARGET_SYSTEM_ROOT
119 static const char *target_system_root = TARGET_SYSTEM_ROOT;
121 static const char *target_system_root = 0;
124 /* Nonzero means pass the updated target_system_root to the compiler. */
126 static int target_system_root_changed;
128 /* Nonzero means append this string to target_system_root. */
130 static const char *target_sysroot_suffix = 0;
132 /* Nonzero means append this string to target_system_root for headers. */
134 static const char *target_sysroot_hdrs_suffix = 0;
136 /* Nonzero means write "temp" files in source directory
137 and use the source file's name in them, and don't delete them. */
139 static enum save_temps {
140 SAVE_TEMPS_NONE, /* no -save-temps */
141 SAVE_TEMPS_CWD, /* -save-temps in current directory */
142 SAVE_TEMPS_OBJ /* -save-temps in object directory */
145 /* Output file to use to get the object directory for -save-temps=obj */
146 static char *save_temps_prefix = 0;
147 static size_t save_temps_length = 0;
149 /* The compiler version. */
151 static const char *compiler_version;
153 /* The target version. */
155 static const char *const spec_version = DEFAULT_TARGET_VERSION;
157 /* The target machine. */
159 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
161 /* Nonzero if cross-compiling.
162 When -b is used, the value comes from the `specs' file. */
164 #ifdef CROSS_DIRECTORY_STRUCTURE
165 static const char *cross_compile = "1";
167 static const char *cross_compile = "0";
170 /* Greatest exit code of sub-processes that has been encountered up to
172 static int greatest_status = 1;
174 /* This is the obstack which we use to allocate many strings. */
176 static struct obstack obstack;
178 /* This is the obstack to build an environment variable to pass to
179 collect2 that describes all of the relevant switches of what to
180 pass the compiler in building the list of pointers to constructors
183 static struct obstack collect_obstack;
185 /* Forward declaration for prototypes. */
189 static void init_spec (void);
190 static void store_arg (const char *, int, int);
191 static void insert_wrapper (const char *);
192 static char *load_specs (const char *);
193 static void read_specs (const char *, int);
194 static void set_spec (const char *, const char *);
195 static struct compiler *lookup_compiler (const char *, size_t, const char *);
196 static char *build_search_list (const struct path_prefix *, const char *,
198 static void xputenv (const char *);
199 static void putenv_from_prefixes (const struct path_prefix *, const char *,
201 static int access_check (const char *, int);
202 static char *find_a_file (const struct path_prefix *, const char *, int, bool);
203 static void add_prefix (struct path_prefix *, const char *, const char *,
205 static void add_sysrooted_prefix (struct path_prefix *, const char *,
206 const char *, int, int, int);
207 static char *skip_whitespace (char *);
208 static void delete_if_ordinary (const char *);
209 static void delete_temp_files (void);
210 static void delete_failure_queue (void);
211 static void clear_failure_queue (void);
212 static int check_live_switch (int, int);
213 static const char *handle_braces (const char *);
214 static inline bool input_suffix_matches (const char *, const char *);
215 static inline bool switch_matches (const char *, const char *, int);
216 static inline void mark_matching_switches (const char *, const char *, int);
217 static inline void process_marked_switches (void);
218 static const char *process_brace_body (const char *, const char *, const char *, int, int);
219 static const struct spec_function *lookup_spec_function (const char *);
220 static const char *eval_spec_function (const char *, const char *);
221 static const char *handle_spec_function (const char *);
222 static char *save_string (const char *, int);
223 static void set_collect_gcc_options (void);
224 static int do_spec_1 (const char *, int, const char *);
225 static int do_spec_2 (const char *);
226 static void do_option_spec (const char *, const char *);
227 static void do_self_spec (const char *);
228 static const char *find_file (const char *);
229 static int is_directory (const char *, bool);
230 static const char *validate_switches (const char *);
231 static void validate_all_switches (void);
232 static inline void validate_switches_from_spec (const char *);
233 static void give_switch (int, int);
234 static int used_arg (const char *, int);
235 static int default_arg (const char *, int);
236 static void set_multilib_dir (void);
237 static void print_multilib_info (void);
238 static void perror_with_name (const char *);
239 static void display_help (void);
240 static void add_preprocessor_option (const char *, int);
241 static void add_assembler_option (const char *, int);
242 static void add_linker_option (const char *, int);
243 static void process_command (unsigned int, struct cl_decoded_option *);
244 static int execute (void);
245 static void alloc_args (void);
246 static void clear_args (void);
247 static void fatal_signal (int);
248 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
249 static void init_gcc_specs (struct obstack *, const char *, const char *,
252 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
253 static const char *convert_filename (const char *, int, int);
256 static const char *getenv_spec_function (int, const char **);
257 static const char *if_exists_spec_function (int, const char **);
258 static const char *if_exists_else_spec_function (int, const char **);
259 static const char *replace_outfile_spec_function (int, const char **);
260 static const char *remove_outfile_spec_function (int, const char **);
261 static const char *version_compare_spec_function (int, const char **);
262 static const char *include_spec_function (int, const char **);
263 static const char *find_file_spec_function (int, const char **);
264 static const char *find_plugindir_spec_function (int, const char **);
265 static const char *print_asm_header_spec_function (int, const char **);
266 static const char *compare_debug_dump_opt_spec_function (int, const char **);
267 static const char *compare_debug_self_opt_spec_function (int, const char **);
268 static const char *compare_debug_auxbase_opt_spec_function (int, const char **);
269 static const char *pass_through_libs_spec_func (int, const char **);
271 /* The Specs Language
273 Specs are strings containing lines, each of which (if not blank)
274 is made up of a program name, and arguments separated by spaces.
275 The program name must be exact and start from root, since no path
276 is searched and it is unreliable to depend on the current working directory.
277 Redirection of input or output is not supported; the subprograms must
278 accept filenames saying what files to read and write.
280 In addition, the specs can contain %-sequences to substitute variable text
281 or for conditional text. Here is a table of all defined %-sequences.
282 Note that spaces are not generated automatically around the results of
283 expanding these sequences; therefore, you can concatenate them together
284 or with constant text in a single argument.
286 %% substitute one % into the program name or argument.
287 %i substitute the name of the input file being processed.
288 %b substitute the basename of the input file being processed.
289 This is the substring up to (and not including) the last period
290 and not including the directory unless -save-temps was specified
291 to put temporaries in a different location.
292 %B same as %b, but include the file suffix (text after the last period).
294 substitute a file name that has suffix SUFFIX and is chosen
295 once per compilation, and mark the argument a la %d. To reduce
296 exposure to denial-of-service attacks, the file name is now
297 chosen in a way that is hard to predict even when previously
298 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
299 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
300 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
301 had been pre-processed. Previously, %g was simply substituted
302 with a file name chosen once per compilation, without regard
303 to any appended suffix (which was therefore treated just like
304 ordinary text), making such attacks more likely to succeed.
306 like %g, but if -pipe is in effect, expands simply to "-".
308 like %g, but if -pipe is in effect, expands to nothing. (We have both
309 %| and %m to accommodate differences between system assemblers; see
310 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
312 like %g, but generates a new temporary file name even if %uSUFFIX
315 substitutes the last file name generated with %uSUFFIX, generating a
316 new one if there is no such last file name. In the absence of any
317 %uSUFFIX, this is just like %gSUFFIX, except they don't share
318 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
319 would involve the generation of two distinct file names, one
320 for each `%g.s' and another for each `%U.s'. Previously, %U was
321 simply substituted with a file name chosen for the previous %u,
322 without regard to any appended suffix.
324 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
325 writable, and if save-temps is off; otherwise, substitute the name
326 of a temporary file, just like %u. This temporary file is not
327 meant for communication between processes, but rather as a junk
330 substitutes .SUFFIX for the suffixes of a matched switch's args when
331 it is subsequently output with %*. SUFFIX is terminated by the next
333 %d marks the argument containing or following the %d as a
334 temporary file name, so that that file will be deleted if GCC exits
335 successfully. Unlike %g, this contributes no text to the argument.
336 %w marks the argument containing or following the %w as the
337 "output file" of this compilation. This puts the argument
338 into the sequence of arguments that %o will substitute later.
339 %V indicates that this compilation produces no "output file".
341 like %{...} but mark last argument supplied within
342 as a file to be deleted on failure.
343 %o substitutes the names of all the output files, with spaces
344 automatically placed around them. You should write spaces
345 around the %o as well or the results are undefined.
346 %o is for use in the specs for running the linker.
347 Input files whose names have no recognized suffix are not compiled
348 at all, but they are included among the output files, so they will
350 %O substitutes the suffix for object files. Note that this is
351 handled specially when it immediately follows %g, %u, or %U
352 (with or without a suffix argument) because of the need for
353 those to form complete file names. The handling is such that
354 %O is treated exactly as if it had already been substituted,
355 except that %g, %u, and %U do not currently support additional
356 SUFFIX characters following %O as they would following, for
358 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
359 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
360 and -B options) and -imultilib as necessary.
361 %s current argument is the name of a library or startup file of some sort.
362 Search for that file in a standard list of directories
363 and substitute the full name found.
364 %eSTR Print STR as an error message. STR is terminated by a newline.
365 Use this when inconsistent options are detected.
366 %nSTR Print STR as a notice. STR is terminated by a newline.
367 %x{OPTION} Accumulate an option for %X.
368 %X Output the accumulated linker options specified by compilations.
369 %Y Output the accumulated assembler options specified by compilations.
370 %Z Output the accumulated preprocessor options specified by compilations.
371 %a process ASM_SPEC as a spec.
372 This allows config.h to specify part of the spec for running as.
373 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
374 used here. This can be used to run a post-processor after the
375 assembler has done its job.
376 %D Dump out a -L option for each directory in startfile_prefixes.
377 If multilib_dir is set, extra entries are generated with it affixed.
378 %l process LINK_SPEC as a spec.
379 %L process LIB_SPEC as a spec.
380 %G process LIBGCC_SPEC as a spec.
381 %R Output the concatenation of target_system_root and
382 target_sysroot_suffix.
383 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
384 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
385 %C process CPP_SPEC as a spec.
386 %1 process CC1_SPEC as a spec.
387 %2 process CC1PLUS_SPEC as a spec.
388 %* substitute the variable part of a matched option. (See below.)
389 Note that each comma in the substituted string is replaced by
391 %<S remove all occurrences of -S from the command line.
392 Note - this command is position dependent. % commands in the
393 spec string before this one will see -S, % commands in the
394 spec string after this one will not.
395 %>S Similar to "%<S", but keep it in the GCC command line.
396 %<S* remove all occurrences of all switches beginning with -S from the
399 Call the named function FUNCTION, passing it ARGS. ARGS is
400 first processed as a nested spec string, then split into an
401 argument vector in the usual fashion. The function returns
402 a string which is processed as if it had appeared literally
403 as part of the current spec.
404 %{S} substitutes the -S switch, if that switch was given to GCC.
405 If that switch was not specified, this substitutes nothing.
406 Here S is a metasyntactic variable.
407 %{S*} substitutes all the switches specified to GCC whose names start
408 with -S. This is used for -o, -I, etc; switches that take
409 arguments. GCC considers `-o foo' as being one switch whose
410 name starts with `o'. %{o*} would substitute this text,
411 including the space; thus, two arguments would be generated.
412 %{S*&T*} likewise, but preserve order of S and T options (the order
413 of S and T in the spec is not significant). Can be any number
414 of ampersand-separated variables; for each the wild card is
415 optional. Useful for CPP as %{D*&U*&A*}.
417 %{S:X} substitutes X, if the -S switch was given to GCC.
418 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
419 %{S*:X} substitutes X if one or more switches whose names start
420 with -S was given to GCC. Normally X is substituted only
421 once, no matter how many such switches appeared. However,
422 if %* appears somewhere in X, then X will be substituted
423 once for each matching switch, with the %* replaced by the
424 part of that switch that matched the '*'.
425 %{.S:X} substitutes X, if processing a file with suffix S.
426 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
427 %{,S:X} substitutes X, if processing a file which will use spec S.
428 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
430 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
431 combined with '!', '.', ',', and '*' as above binding stronger
433 If %* appears in X, all of the alternatives must be starred, and
434 only the first matching alternative is substituted.
435 %{S:X; if S was given to GCC, substitutes X;
436 T:Y; else if T was given to GCC, substitutes Y;
437 :D} else substitutes D. There can be as many clauses as you need.
438 This may be combined with '.', '!', ',', '|', and '*' as above.
440 %(Spec) processes a specification defined in a specs file as *Spec:
442 The conditional text X in a %{S:X} or similar construct may contain
443 other nested % constructs or spaces, or even newlines. They are
444 processed as usual, as described above. Trailing white space in X is
445 ignored. White space may also appear anywhere on the left side of the
446 colon in these constructs, except between . or * and the corresponding
449 The -O, -f, -m, and -W switches are handled specifically in these
450 constructs. If another value of -O or the negated form of a -f, -m, or
451 -W switch is found later in the command line, the earlier switch
452 value is ignored, except with {S*} where S is just one letter; this
453 passes all matching options.
455 The character | at the beginning of the predicate text is used to indicate
456 that a command should be piped to the following command, but only if -pipe
459 Note that it is built into GCC which switches take arguments and which
460 do not. You might think it would be useful to generalize this to
461 allow each compiler's spec to say which switches take arguments. But
462 this cannot be done in a consistent fashion. GCC cannot even decide
463 which input files have been specified without knowing which switches
464 take arguments, and it must know which input files to compile in order
465 to tell which compilers to run.
467 GCC also knows implicitly that arguments starting in `-l' are to be
468 treated as compiler output files, and passed to the linker in their
469 proper position among the other output files. */
471 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
473 /* config.h can define ASM_SPEC to provide extra args to the assembler
474 or extra switch-translations. */
479 /* config.h can define ASM_FINAL_SPEC to run a post processor after
480 the assembler has run. */
481 #ifndef ASM_FINAL_SPEC
482 #define ASM_FINAL_SPEC ""
485 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
486 or extra switch-translations. */
491 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
492 or extra switch-translations. */
497 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
498 or extra switch-translations. */
500 #define CC1PLUS_SPEC ""
503 /* config.h can define LINK_SPEC to provide extra args to the linker
504 or extra switch-translations. */
509 /* config.h can define LIB_SPEC to override the default libraries. */
511 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
516 /* XXX: valid only for GNU ld */
517 /* XXX: should exactly match hooks provided by libmudflap.a */
518 #define MFWRAP_SPEC " %{static: %{fmudflap|fmudflapth: \
519 --wrap=malloc --wrap=free --wrap=calloc --wrap=realloc\
520 --wrap=mmap --wrap=mmap64 --wrap=munmap --wrap=alloca\
521 } %{fmudflapth: --wrap=pthread_create\
522 }} %{fmudflap|fmudflapth: --wrap=main}"
525 #define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}"
528 /* When using -fsplit-stack we need to wrap pthread_create, in order
529 to initialize the stack guard. We always use wrapping, rather than
530 shared library ordering, and we keep the wrapper function in
531 libgcc. This is not yet a real spec, though it could become one;
532 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping
533 only works with GNU ld and gold. FIXME: This is incompatible with
534 -fmudflap when linking statically, which wants to do its own
536 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}"
538 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
541 #if defined(REAL_LIBGCC_SPEC)
542 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
543 #elif defined(LINK_LIBGCC_SPECIAL_1)
544 /* Have gcc do the search for libgcc.a. */
545 #define LIBGCC_SPEC "libgcc.a%s"
547 #define LIBGCC_SPEC "-lgcc"
551 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
552 #ifndef STARTFILE_SPEC
553 #define STARTFILE_SPEC \
554 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
557 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
559 #define ENDFILE_SPEC ""
563 #define LINKER_NAME "collect2"
566 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
567 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
572 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
574 #ifndef ASM_DEBUG_SPEC
575 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
576 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
577 # define ASM_DEBUG_SPEC \
578 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
579 ? "%{!g0:%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}}" ASM_MAP \
580 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
582 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
583 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
585 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
586 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
590 #ifndef ASM_DEBUG_SPEC
591 # define ASM_DEBUG_SPEC ""
594 /* Here is the spec for running the linker, after compiling all files. */
596 /* This is overridable by the target in case they need to specify the
597 -lgcc and -lc order specially, yet not require them to override all
598 of LINK_COMMAND_SPEC. */
599 #ifndef LINK_GCC_C_SEQUENCE_SPEC
600 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
603 #ifndef LINK_SSP_SPEC
604 #ifdef TARGET_LIBC_PROVIDES_SSP
605 #define LINK_SSP_SPEC "%{fstack-protector:}"
607 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}"
611 #ifndef LINK_PIE_SPEC
613 #define LINK_PIE_SPEC "%{pie:-pie} "
615 #define LINK_PIE_SPEC "%{pie:} "
619 #ifndef LINK_BUILDID_SPEC
620 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
621 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
625 /* Conditional to test whether the LTO plugin is used or not.
626 FIXME: For slim LTO we will need to enable plugin unconditionally. This
627 still cause problems with PLUGIN_LD != LD and when plugin is built but
628 not useable. For GCC 4.6 we don't support slim LTO and thus we can enable
629 plugin only when LTO is enabled. We still honor explicit
630 -fuse-linker-plugin if the linker used understands -plugin. */
632 /* The linker has some plugin support. */
633 #if HAVE_LTO_PLUGIN > 0
634 /* The linker used has full plugin support, use LTO plugin by default. */
635 #if HAVE_LTO_PLUGIN == 2
636 #define PLUGIN_COND "!fno-use-linker-plugin:%{flto|flto=*|fuse-linker-plugin"
637 #define PLUGIN_COND_CLOSE "}"
639 /* The linker used has limited plugin support, use LTO plugin with explicit
640 -fuse-linker-plugin. */
641 #define PLUGIN_COND "fuse-linker-plugin"
642 #define PLUGIN_COND_CLOSE ""
644 #define LINK_PLUGIN_SPEC \
646 -plugin %(linker_plugin_file) \
647 -plugin-opt=%(lto_wrapper) \
648 -plugin-opt=-fresolution=%u.res \
649 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
652 /* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */
653 #define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\
654 %e-fuse-linker-plugin is not supported in this configuration}"
658 /* -u* was put back because both BSD and SysV seem to support it. */
659 /* %{static:} simply prevents an error message if the target machine
660 doesn't handle -static. */
661 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
662 scripts which exist in user specified directories, or in standard
664 /* We pass any -flto flags on to the linker, which is expected
665 to understand them. In practice, this means it had better be collect2. */
666 /* %{e*} includes -export-dynamic; see comment in common.opt. */
667 #ifndef LINK_COMMAND_SPEC
668 #define LINK_COMMAND_SPEC "\
669 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
672 "%{flto|flto=*:%<fcompare-debug*} \
673 %{flto} %{flto=*} %l " LINK_PIE_SPEC \
674 "%X %{o*} %{e*} %{N} %{n} %{r}\
675 %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}}\
676 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
677 %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
678 %{fgnu-tm:%:include(libitm.spec)%(link_itm)}\
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;
732 static const char *self_spec = "";
734 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
735 There should be no need to override these in target dependent files,
736 but we need to copy them to the specs file so that newer versions
737 of the GCC driver can correctly drive older tool chains with the
738 appropriate -B options. */
740 /* When cpplib handles traditional preprocessing, get rid of this, and
741 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
742 that we default the front end language better. */
743 static const char *trad_capable_cpp =
744 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}";
746 /* We don't wrap .d files in %W{} since a missing .d file, and
747 therefore no dependency entry, confuses make into thinking a .o
748 file that happens to exist is up-to-date. */
749 static const char *cpp_unique_options =
750 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
751 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
752 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
753 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
754 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
755 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
756 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
757 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
758 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
759 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
762 /* This contains cpp options which are common with cc1_options and are passed
763 only when preprocessing only to avoid duplication. We pass the cc1 spec
764 options to the preprocessor so that it the cc1 spec may manipulate
765 options used to set target flags. Those special target flags settings may
766 in turn cause preprocessor symbols to be defined specially. */
767 static const char *cpp_options =
768 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
769 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
770 %{undef} %{save-temps*:-fpch-preprocess}";
772 /* This contains cpp options which are not passed when the preprocessor
773 output will be used by another program. */
774 static const char *cpp_debug_options = "%{d*}";
776 /* NB: This is shared amongst all front-ends, except for Ada. */
777 static const char *cc1_options =
778 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
779 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
780 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
781 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
782 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
783 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
784 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
785 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\
786 %{-target-help:--target-help}\
787 %{-version:--version}\
788 %{-help=*:--help=%*}\
789 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
790 %{fsyntax-only:-o %j} %{-param*}\
791 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\
792 %{coverage:-fprofile-arcs -ftest-coverage}";
794 static const char *asm_options =
795 "%{-target-help:%:print-asm-header()} "
797 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
798 to the assembler equivalents. */
799 "%{v} %{w:-W} %{I*} "
801 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
803 static const char *invoke_as =
804 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
806 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
807 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
811 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
812 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
816 /* Some compilers have limits on line lengths, and the multilib_select
817 and/or multilib_matches strings can be very long, so we build them at
819 static struct obstack multilib_obstack;
820 static const char *multilib_select;
821 static const char *multilib_matches;
822 static const char *multilib_defaults;
823 static const char *multilib_exclusions;
825 /* Check whether a particular argument is a default argument. */
827 #ifndef MULTILIB_DEFAULTS
828 #define MULTILIB_DEFAULTS { "" }
831 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
833 #ifndef DRIVER_SELF_SPECS
834 #define DRIVER_SELF_SPECS ""
837 /* Adding -fopenmp should imply pthreads. This is particularly important
838 for targets that use different start files and suchlike. */
839 #ifndef GOMP_SELF_SPECS
840 #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}"
843 /* Likewise for -fgnu-tm. */
844 #ifndef GTM_SELF_SPECS
845 #define GTM_SELF_SPECS "%{fgnu-tm: -pthread}"
848 static const char *const driver_self_specs[] = {
849 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
850 DRIVER_SELF_SPECS, CONFIGURE_SPECS, GOMP_SELF_SPECS, GTM_SELF_SPECS
853 #ifndef OPTION_DEFAULT_SPECS
854 #define OPTION_DEFAULT_SPECS { "", "" }
863 static const struct default_spec
864 option_default_specs[] = { OPTION_DEFAULT_SPECS };
868 struct user_specs *next;
869 const char *filename;
872 static struct user_specs *user_specs_head, *user_specs_tail;
875 /* Record the mapping from file suffixes for compilation specs. */
879 const char *suffix; /* Use this compiler for input files
880 whose names end in this suffix. */
882 const char *spec; /* To use this compiler, run this spec. */
884 const char *cpp_spec; /* If non-NULL, substitute this spec
885 for `%C', rather than the usual
887 const int combinable; /* If nonzero, compiler can deal with
888 multiple source files at once (IMA). */
889 const int needs_preprocessing; /* If nonzero, source files need to
890 be run through a preprocessor. */
893 /* Pointer to a vector of `struct compiler' that gives the spec for
894 compiling a file, based on its suffix.
895 A file that does not end in any of these suffixes will be passed
896 unchanged to the loader and nothing else will be done to it.
898 An entry containing two 0s is used to terminate the vector.
900 If multiple entries match a file, the last matching one is used. */
902 static struct compiler *compilers;
904 /* Number of entries in `compilers', not counting the null terminator. */
906 static int n_compilers;
908 /* The default list of file name suffixes and their compilation specs. */
910 static const struct compiler default_compilers[] =
912 /* Add lists of suffixes of known languages here. If those languages
913 were not present when we built the driver, we will hit these copies
914 and be given a more meaningful error than "file not used since
915 linking is not done". */
916 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
917 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
918 {".mii", "#Objective-C++", 0, 0, 0},
919 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
920 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
921 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
922 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
923 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
924 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
925 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
926 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
927 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
928 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
929 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
930 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
931 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
932 {".r", "#Ratfor", 0, 0, 0},
933 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
934 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
935 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
936 {".go", "#Go", 0, 1, 0},
937 /* Next come the entries for C. */
938 {".c", "@c", 0, 0, 1},
940 /* cc1 has an integrated ISO C preprocessor. We should invoke the
941 external preprocessor if -save-temps is given. */
942 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
945 %eGNU C no longer supports -traditional without -E}\
946 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
947 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
948 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
950 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
951 cc1 %(cpp_unique_options) %(cc1_options)}}}\
952 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
954 "%{!E:%e-E or -x required when input is from standard input}\
955 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
956 {".h", "@c-header", 0, 0, 0},
958 /* cc1 has an integrated ISO C preprocessor. We should invoke the
959 external preprocessor if -save-temps is given. */
960 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
962 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
963 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
964 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
966 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
967 %W{o*:--output-pch=%*}}%V}\
968 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
969 cc1 %(cpp_unique_options) %(cc1_options)\
970 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
971 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
972 {".i", "@cpp-output", 0, 0, 0},
974 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
975 {".s", "@assembler", 0, 0, 0},
977 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
978 {".sx", "@assembler-with-cpp", 0, 0, 0},
979 {".S", "@assembler-with-cpp", 0, 0, 0},
980 {"@assembler-with-cpp",
981 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
982 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
983 %{E|M|MM:%(cpp_debug_options)}\
984 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
985 as %(asm_debug) %(asm_options) %|.s %A }}}}"
987 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
988 %{E|M|MM:%(cpp_debug_options)}\
989 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
990 as %(asm_debug) %(asm_options) %m.s %A }}}}"
995 /* Mark end of table. */
999 /* Number of elements in default_compilers, not counting the terminator. */
1001 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
1003 typedef char *char_p; /* For DEF_VEC_P. */
1005 DEF_VEC_ALLOC_P(char_p,heap);
1007 /* A vector of options to give to the linker.
1008 These options are accumulated by %x,
1009 and substituted into the linker command with %X. */
1010 static VEC(char_p,heap) *linker_options;
1012 /* A vector of options to give to the assembler.
1013 These options are accumulated by -Wa,
1014 and substituted into the assembler command with %Y. */
1015 static VEC(char_p,heap) *assembler_options;
1017 /* A vector of options to give to the preprocessor.
1018 These options are accumulated by -Wp,
1019 and substituted into the preprocessor command with %Z. */
1020 static VEC(char_p,heap) *preprocessor_options;
1023 skip_whitespace (char *p)
1027 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1028 be considered whitespace. */
1029 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1031 else if (*p == '\n' || *p == ' ' || *p == '\t')
1045 /* Structures to keep track of prefixes to try when looking for files. */
1049 const char *prefix; /* String to prepend to the path. */
1050 struct prefix_list *next; /* Next in linked list. */
1051 int require_machine_suffix; /* Don't use without machine_suffix. */
1052 /* 2 means try both machine_suffix and just_machine_suffix. */
1053 int priority; /* Sort key - priority within list. */
1054 int os_multilib; /* 1 if OS multilib scheme should be used,
1055 0 for GCC multilib scheme. */
1060 struct prefix_list *plist; /* List of prefixes to try */
1061 int max_len; /* Max length of a prefix in PLIST */
1062 const char *name; /* Name of this list (used in config stuff) */
1065 /* List of prefixes to try when looking for executables. */
1067 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1069 /* List of prefixes to try when looking for startup (crt0) files. */
1071 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1073 /* List of prefixes to try when looking for include files. */
1075 static struct path_prefix include_prefixes = { 0, 0, "include" };
1077 /* Suffix to attach to directories searched for commands.
1078 This looks like `MACHINE/VERSION/'. */
1080 static const char *machine_suffix = 0;
1082 /* Suffix to attach to directories searched for commands.
1083 This is just `MACHINE/'. */
1085 static const char *just_machine_suffix = 0;
1087 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1089 static const char *gcc_exec_prefix;
1091 /* Adjusted value of standard_libexec_prefix. */
1093 static const char *gcc_libexec_prefix;
1095 /* Default prefixes to attach to command names. */
1097 #ifndef STANDARD_STARTFILE_PREFIX_1
1098 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1100 #ifndef STANDARD_STARTFILE_PREFIX_2
1101 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1104 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1105 #undef MD_EXEC_PREFIX
1106 #undef MD_STARTFILE_PREFIX
1107 #undef MD_STARTFILE_PREFIX_1
1110 /* If no prefixes defined, use the null string, which will disable them. */
1111 #ifndef MD_EXEC_PREFIX
1112 #define MD_EXEC_PREFIX ""
1114 #ifndef MD_STARTFILE_PREFIX
1115 #define MD_STARTFILE_PREFIX ""
1117 #ifndef MD_STARTFILE_PREFIX_1
1118 #define MD_STARTFILE_PREFIX_1 ""
1121 /* These directories are locations set at configure-time based on the
1122 --prefix option provided to configure. Their initializers are
1123 defined in Makefile.in. These paths are not *directly* used when
1124 gcc_exec_prefix is set because, in that case, we know where the
1125 compiler has been installed, and use paths relative to that
1126 location instead. */
1127 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1128 static const char *const standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1129 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1130 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1132 /* For native compilers, these are well-known paths containing
1133 components that may be provided by the system. For cross
1134 compilers, these paths are not used. */
1135 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1136 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1137 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1138 static const char *const standard_startfile_prefix_1
1139 = STANDARD_STARTFILE_PREFIX_1;
1140 static const char *const standard_startfile_prefix_2
1141 = STANDARD_STARTFILE_PREFIX_2;
1143 /* A relative path to be used in finding the location of tools
1144 relative to the driver. */
1145 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1147 /* Subdirectory to use for locating libraries. Set by
1148 set_multilib_dir based on the compilation options. */
1150 static const char *multilib_dir;
1152 /* Subdirectory to use for locating libraries in OS conventions. Set by
1153 set_multilib_dir based on the compilation options. */
1155 static const char *multilib_os_dir;
1157 /* Structure to keep track of the specs that have been defined so far.
1158 These are accessed using %(specname) in a compiler or link
1163 /* The following 2 fields must be first */
1164 /* to allow EXTRA_SPECS to be initialized */
1165 const char *name; /* name of the spec. */
1166 const char *ptr; /* available ptr if no static pointer */
1168 /* The following fields are not initialized */
1169 /* by EXTRA_SPECS */
1170 const char **ptr_spec; /* pointer to the spec itself. */
1171 struct spec_list *next; /* Next spec in linked list. */
1172 int name_len; /* length of the name */
1173 int alloc_p; /* whether string was allocated */
1176 #define INIT_STATIC_SPEC(NAME,PTR) \
1177 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1179 /* List of statically defined specs. */
1180 static struct spec_list static_specs[] =
1182 INIT_STATIC_SPEC ("asm", &asm_spec),
1183 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1184 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1185 INIT_STATIC_SPEC ("asm_options", &asm_options),
1186 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1187 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1188 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1189 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1190 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1191 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1192 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1193 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1194 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1195 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1196 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec),
1197 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1198 INIT_STATIC_SPEC ("link", &link_spec),
1199 INIT_STATIC_SPEC ("lib", &lib_spec),
1200 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec),
1201 INIT_STATIC_SPEC ("mflib", &mflib_spec),
1202 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec),
1203 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1204 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1205 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1206 INIT_STATIC_SPEC ("version", &compiler_version),
1207 INIT_STATIC_SPEC ("multilib", &multilib_select),
1208 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1209 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1210 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1211 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1212 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1213 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1214 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec),
1215 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec),
1216 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec),
1217 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1218 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1219 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1220 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1221 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1222 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec),
1223 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1224 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1225 INIT_STATIC_SPEC ("self_spec", &self_spec),
1228 #ifdef EXTRA_SPECS /* additional specs needed */
1229 /* Structure to keep track of just the first two args of a spec_list.
1230 That is all that the EXTRA_SPECS macro gives us. */
1233 const char *const name;
1234 const char *const ptr;
1237 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1238 static struct spec_list *extra_specs = (struct spec_list *) 0;
1241 /* List of dynamically allocates specs that have been defined so far. */
1243 static struct spec_list *specs = (struct spec_list *) 0;
1245 /* List of static spec functions. */
1247 static const struct spec_function static_spec_functions[] =
1249 { "getenv", getenv_spec_function },
1250 { "if-exists", if_exists_spec_function },
1251 { "if-exists-else", if_exists_else_spec_function },
1252 { "replace-outfile", replace_outfile_spec_function },
1253 { "remove-outfile", remove_outfile_spec_function },
1254 { "version-compare", version_compare_spec_function },
1255 { "include", include_spec_function },
1256 { "find-file", find_file_spec_function },
1257 { "find-plugindir", find_plugindir_spec_function },
1258 { "print-asm-header", print_asm_header_spec_function },
1259 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function },
1260 { "compare-debug-self-opt", compare_debug_self_opt_spec_function },
1261 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function },
1262 { "pass-through-libs", pass_through_libs_spec_func },
1263 #ifdef EXTRA_SPEC_FUNCTIONS
1264 EXTRA_SPEC_FUNCTIONS
1269 static int processing_spec_function;
1271 /* Add appropriate libgcc specs to OBSTACK, taking into account
1272 various permutations of -shared-libgcc, -shared, and such. */
1274 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1276 #ifndef USE_LD_AS_NEEDED
1277 #define USE_LD_AS_NEEDED 0
1281 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1282 const char *static_name, const char *eh_name)
1286 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}"
1287 "%{!static:%{!static-libgcc:"
1288 #if USE_LD_AS_NEEDED
1289 "%{!shared-libgcc:",
1290 static_name, " --as-needed ", shared_name, " --no-as-needed"
1293 shared_name, "%{!shared: ", static_name, "}"
1297 "%{!shared-libgcc:", static_name, " ", eh_name, "}"
1298 "%{shared-libgcc:", shared_name, " ", static_name, "}"
1302 "%{shared-libgcc:", shared_name, "}"
1303 "%{!shared-libgcc:", static_name, "}"
1306 "%{shared:", shared_name, "}"
1311 obstack_grow (obstack, buf, strlen (buf));
1314 #endif /* ENABLE_SHARED_LIBGCC */
1316 /* Initialize the specs lookup routines. */
1321 struct spec_list *next = (struct spec_list *) 0;
1322 struct spec_list *sl = (struct spec_list *) 0;
1326 return; /* Already initialized. */
1329 fnotice (stderr, "Using built-in specs.\n");
1332 extra_specs = XCNEWVEC (struct spec_list, ARRAY_SIZE (extra_specs_1));
1334 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1336 sl = &extra_specs[i];
1337 sl->name = extra_specs_1[i].name;
1338 sl->ptr = extra_specs_1[i].ptr;
1340 sl->name_len = strlen (sl->name);
1341 sl->ptr_spec = &sl->ptr;
1346 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1348 sl = &static_specs[i];
1353 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1354 /* ??? If neither -shared-libgcc nor --static-libgcc was
1355 seen, then we should be making an educated guess. Some proposed
1356 heuristics for ELF include:
1358 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1359 program will be doing dynamic loading, which will likely
1360 need the shared libgcc.
1362 (2) If "-ldl", then it's also a fair bet that we're doing
1365 (3) For each ET_DYN we're linking against (either through -lfoo
1366 or /some/path/foo.so), check to see whether it or one of
1367 its dependencies depends on a shared libgcc.
1371 If the runtime is fixed to look for program headers instead
1372 of calling __register_frame_info at all, for each object,
1373 use the shared libgcc if any EH symbol referenced.
1375 If crtstuff is fixed to not invoke __register_frame_info
1376 automatically, for each object, use the shared libgcc if
1377 any non-empty unwind section found.
1379 Doing any of this probably requires invoking an external program to
1380 do the actual object file scanning. */
1382 const char *p = libgcc_spec;
1385 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1386 when given the proper command line arguments. */
1389 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1391 init_gcc_specs (&obstack,
1393 #ifdef USE_LIBUNWIND_EXCEPTIONS
1399 #ifdef USE_LIBUNWIND_EXCEPTIONS
1400 # ifdef HAVE_LD_STATIC_DYNAMIC
1401 " %{!static:" LD_STATIC_OPTION "} -lunwind"
1402 " %{!static:" LD_DYNAMIC_OPTION "}"
1412 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1414 /* Ug. We don't know shared library extensions. Hope that
1415 systems that use this form don't do shared libraries. */
1416 init_gcc_specs (&obstack,
1420 #ifdef USE_LIBUNWIND_EXCEPTIONS
1429 obstack_1grow (&obstack, *p);
1430 in_sep = (*p == ' ');
1435 obstack_1grow (&obstack, '\0');
1436 libgcc_spec = XOBFINISH (&obstack, const char *);
1439 #ifdef USE_AS_TRADITIONAL_FORMAT
1440 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1442 static const char tf[] = "--traditional-format ";
1443 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1444 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1445 asm_spec = XOBFINISH (&obstack, const char *);
1449 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \
1450 defined LINKER_HASH_STYLE
1451 # ifdef LINK_BUILDID_SPEC
1452 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1453 obstack_grow (&obstack, LINK_BUILDID_SPEC, sizeof(LINK_BUILDID_SPEC) - 1);
1455 # ifdef LINK_EH_SPEC
1456 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1457 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1459 # ifdef LINKER_HASH_STYLE
1460 /* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had
1463 static const char hash_style[] = "--hash-style=";
1464 obstack_grow (&obstack, hash_style, sizeof(hash_style) - 1);
1465 obstack_grow (&obstack, LINKER_HASH_STYLE, sizeof(LINKER_HASH_STYLE) - 1);
1466 obstack_1grow (&obstack, ' ');
1469 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1470 link_spec = XOBFINISH (&obstack, const char *);
1476 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1477 removed; If the spec starts with a + then SPEC is added to the end of the
1481 set_spec (const char *name, const char *spec)
1483 struct spec_list *sl;
1484 const char *old_spec;
1485 int name_len = strlen (name);
1488 /* If this is the first call, initialize the statically allocated specs. */
1491 struct spec_list *next = (struct spec_list *) 0;
1492 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1494 sl = &static_specs[i];
1501 /* See if the spec already exists. */
1502 for (sl = specs; sl; sl = sl->next)
1503 if (name_len == sl->name_len && !strcmp (sl->name, name))
1508 /* Not found - make it. */
1509 sl = XNEW (struct spec_list);
1510 sl->name = xstrdup (name);
1511 sl->name_len = name_len;
1512 sl->ptr_spec = &sl->ptr;
1514 *(sl->ptr_spec) = "";
1519 old_spec = *(sl->ptr_spec);
1520 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1521 ? concat (old_spec, spec + 1, NULL)
1526 fnotice (stderr, "Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1529 /* Free the old spec. */
1530 if (old_spec && sl->alloc_p)
1531 free (CONST_CAST(char *, old_spec));
1536 /* Accumulate a command (program name and args), and run it. */
1538 typedef const char *const_char_p; /* For DEF_VEC_P. */
1539 DEF_VEC_P(const_char_p);
1540 DEF_VEC_ALLOC_P(const_char_p,heap);
1542 /* Vector of pointers to arguments in the current line of specifications. */
1544 static VEC(const_char_p,heap) *argbuf;
1546 /* Position in the argbuf vector containing the name of the output file
1547 (the value associated with the "-o" flag). */
1549 static int have_o_argbuf_index = 0;
1551 /* Were the options -c, -S or -E passed. */
1552 static int have_c = 0;
1554 /* Was the option -o passed. */
1555 static int have_o = 0;
1557 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1558 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1561 static struct temp_name {
1562 const char *suffix; /* suffix associated with the code. */
1563 int length; /* strlen (suffix). */
1564 int unique; /* Indicates whether %g or %u/%U was used. */
1565 const char *filename; /* associated filename. */
1566 int filename_length; /* strlen (filename). */
1567 struct temp_name *next;
1570 /* Number of commands executed so far. */
1572 static int execution_count;
1574 /* Number of commands that exited with a signal. */
1576 static int signal_count;
1578 /* Allocate the argument vector. */
1583 argbuf = VEC_alloc (const_char_p, heap, 10);
1586 /* Clear out the vector of arguments (after a command is executed). */
1591 VEC_truncate (const_char_p, argbuf, 0);
1594 /* Add one argument to the vector at the end.
1595 This is done when a space is seen or at the end of the line.
1596 If DELETE_ALWAYS is nonzero, the arg is a filename
1597 and the file should be deleted eventually.
1598 If DELETE_FAILURE is nonzero, the arg is a filename
1599 and the file should be deleted if this compilation fails. */
1602 store_arg (const char *arg, int delete_always, int delete_failure)
1604 VEC_safe_push (const_char_p, heap, argbuf, arg);
1606 if (strcmp (arg, "-o") == 0)
1607 have_o_argbuf_index = VEC_length (const_char_p, argbuf);
1608 if (delete_always || delete_failure)
1611 /* If the temporary file we should delete is specified as
1612 part of a joined argument extract the filename. */
1614 && (p = strrchr (arg, '=')))
1616 record_temp_file (arg, delete_always, delete_failure);
1620 /* Load specs from a file name named FILENAME, replacing occurrences of
1621 various different types of line-endings, \r\n, \n\r and just \r, with
1625 load_specs (const char *filename)
1629 struct stat statbuf;
1636 fnotice (stderr, "Reading specs from %s\n", filename);
1638 /* Open and stat the file. */
1639 desc = open (filename, O_RDONLY, 0);
1641 pfatal_with_name (filename);
1642 if (stat (filename, &statbuf) < 0)
1643 pfatal_with_name (filename);
1645 /* Read contents of file into BUFFER. */
1646 buffer = XNEWVEC (char, statbuf.st_size + 1);
1647 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1649 pfatal_with_name (filename);
1650 buffer[readlen] = 0;
1653 specs = XNEWVEC (char, readlen + 1);
1655 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1661 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1663 else if (*(buffer_p + 1) == '\n') /* \r\n */
1677 /* Read compilation specs from a file named FILENAME,
1678 replacing the default ones.
1680 A suffix which starts with `*' is a definition for
1681 one of the machine-specific sub-specs. The "suffix" should be
1682 *asm, *cc1, *cpp, *link, *startfile, etc.
1683 The corresponding spec is stored in asm_spec, etc.,
1684 rather than in the `compilers' vector.
1686 Anything invalid in the file is a fatal error. */
1689 read_specs (const char *filename, int main_p)
1694 buffer = load_specs (filename);
1696 /* Scan BUFFER for specs, putting them in the vector. */
1702 char *in, *out, *p1, *p2, *p3;
1704 /* Advance P in BUFFER to the next nonblank nocomment line. */
1705 p = skip_whitespace (p);
1709 /* Is this a special command that starts with '%'? */
1710 /* Don't allow this for the main specs file, since it would
1711 encourage people to overwrite it. */
1712 if (*p == '%' && !main_p)
1715 while (*p && *p != '\n')
1721 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1722 && (p1[sizeof "%include" - 1] == ' '
1723 || p1[sizeof "%include" - 1] == '\t'))
1727 p1 += sizeof ("%include");
1728 while (*p1 == ' ' || *p1 == '\t')
1731 if (*p1++ != '<' || p[-2] != '>')
1732 fatal_error ("specs %%include syntax malformed after "
1734 (long) (p1 - buffer + 1));
1737 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1738 read_specs (new_filename ? new_filename : p1, FALSE);
1741 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1742 && (p1[sizeof "%include_noerr" - 1] == ' '
1743 || p1[sizeof "%include_noerr" - 1] == '\t'))
1747 p1 += sizeof "%include_noerr";
1748 while (*p1 == ' ' || *p1 == '\t')
1751 if (*p1++ != '<' || p[-2] != '>')
1752 fatal_error ("specs %%include syntax malformed after "
1754 (long) (p1 - buffer + 1));
1757 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1759 read_specs (new_filename, FALSE);
1760 else if (verbose_flag)
1761 fnotice (stderr, "could not find specs file %s\n", p1);
1764 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1765 && (p1[sizeof "%rename" - 1] == ' '
1766 || p1[sizeof "%rename" - 1] == '\t'))
1769 struct spec_list *sl;
1770 struct spec_list *newsl;
1772 /* Get original name. */
1773 p1 += sizeof "%rename";
1774 while (*p1 == ' ' || *p1 == '\t')
1777 if (! ISALPHA ((unsigned char) *p1))
1778 fatal_error ("specs %%rename syntax malformed after "
1780 (long) (p1 - buffer));
1783 while (*p2 && !ISSPACE ((unsigned char) *p2))
1786 if (*p2 != ' ' && *p2 != '\t')
1787 fatal_error ("specs %%rename syntax malformed after "
1789 (long) (p2 - buffer));
1793 while (*p2 == ' ' || *p2 == '\t')
1796 if (! ISALPHA ((unsigned char) *p2))
1797 fatal_error ("specs %%rename syntax malformed after "
1799 (long) (p2 - buffer));
1801 /* Get new spec name. */
1803 while (*p3 && !ISSPACE ((unsigned char) *p3))
1807 fatal_error ("specs %%rename syntax malformed after "
1809 (long) (p3 - buffer));
1812 for (sl = specs; sl; sl = sl->next)
1813 if (name_len == sl->name_len && !strcmp (sl->name, p1))
1817 fatal_error ("specs %s spec was not found to be renamed", p1);
1819 if (strcmp (p1, p2) == 0)
1822 for (newsl = specs; newsl; newsl = newsl->next)
1823 if (strcmp (newsl->name, p2) == 0)
1824 fatal_error ("%s: attempt to rename spec %qs to "
1825 "already defined spec %qs",
1830 fnotice (stderr, "rename spec %s to %s\n", p1, p2);
1832 fnotice (stderr, "spec is '%s'\n\n", *(sl->ptr_spec));
1836 set_spec (p2, *(sl->ptr_spec));
1838 free (CONST_CAST (char *, *(sl->ptr_spec)));
1840 *(sl->ptr_spec) = "";
1845 fatal_error ("specs unknown %% command after %ld characters",
1846 (long) (p1 - buffer));
1849 /* Find the colon that should end the suffix. */
1851 while (*p1 && *p1 != ':' && *p1 != '\n')
1854 /* The colon shouldn't be missing. */
1856 fatal_error ("specs file malformed after %ld characters",
1857 (long) (p1 - buffer));
1859 /* Skip back over trailing whitespace. */
1861 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
1864 /* Copy the suffix to a string. */
1865 suffix = save_string (p, p2 - p);
1866 /* Find the next line. */
1867 p = skip_whitespace (p1 + 1);
1869 fatal_error ("specs file malformed after %ld characters",
1870 (long) (p - buffer));
1873 /* Find next blank line or end of string. */
1874 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
1877 /* Specs end at the blank line and do not include the newline. */
1878 spec = save_string (p, p1 - p);
1881 /* Delete backslash-newline sequences from the spec. */
1886 if (in[0] == '\\' && in[1] == '\n')
1888 else if (in[0] == '#')
1889 while (*in && *in != '\n')
1897 if (suffix[0] == '*')
1899 if (! strcmp (suffix, "*link_command"))
1900 link_command_spec = spec;
1902 set_spec (suffix + 1, spec);
1906 /* Add this pair to the vector. */
1908 = XRESIZEVEC (struct compiler, compilers, n_compilers + 2);
1910 compilers[n_compilers].suffix = suffix;
1911 compilers[n_compilers].spec = spec;
1913 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
1917 link_command_spec = spec;
1920 if (link_command_spec == 0)
1921 fatal_error ("spec file has no spec for linking");
1924 /* Record the names of temporary files we tell compilers to write,
1925 and delete them at the end of the run. */
1927 /* This is the common prefix we use to make temp file names.
1928 It is chosen once for each run of this program.
1929 It is substituted into a spec by %g or %j.
1930 Thus, all temp file names contain this prefix.
1931 In practice, all temp file names start with this prefix.
1933 This prefix comes from the envvar TMPDIR if it is defined;
1934 otherwise, from the P_tmpdir macro if that is defined;
1935 otherwise, in /usr/tmp or /tmp;
1936 or finally the current directory if all else fails. */
1938 static const char *temp_filename;
1940 /* Length of the prefix. */
1942 static int temp_filename_length;
1944 /* Define the list of temporary files to delete. */
1949 struct temp_file *next;
1952 /* Queue of files to delete on success or failure of compilation. */
1953 static struct temp_file *always_delete_queue;
1954 /* Queue of files to delete on failure of compilation. */
1955 static struct temp_file *failure_delete_queue;
1957 /* Record FILENAME as a file to be deleted automatically.
1958 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
1959 otherwise delete it in any case.
1960 FAIL_DELETE nonzero means delete it if a compilation step fails;
1961 otherwise delete it in any case. */
1964 record_temp_file (const char *filename, int always_delete, int fail_delete)
1966 char *const name = xstrdup (filename);
1970 struct temp_file *temp;
1971 for (temp = always_delete_queue; temp; temp = temp->next)
1972 if (! filename_cmp (name, temp->name))
1975 temp = XNEW (struct temp_file);
1976 temp->next = always_delete_queue;
1978 always_delete_queue = temp;
1985 struct temp_file *temp;
1986 for (temp = failure_delete_queue; temp; temp = temp->next)
1987 if (! filename_cmp (name, temp->name))
1990 temp = XNEW (struct temp_file);
1991 temp->next = failure_delete_queue;
1993 failure_delete_queue = temp;
1999 /* Delete all the temporary files whose names we previously recorded. */
2001 #ifndef DELETE_IF_ORDINARY
2002 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2005 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2006 if (unlink (NAME) < 0) \
2008 perror_with_name (NAME); \
2013 delete_if_ordinary (const char *name)
2019 printf ("Delete %s? (y or n) ", name);
2023 while ((c = getchar ()) != '\n' && c != EOF)
2026 if (i == 'y' || i == 'Y')
2028 DELETE_IF_ORDINARY (name, st, verbose_flag);
2032 delete_temp_files (void)
2034 struct temp_file *temp;
2036 for (temp = always_delete_queue; temp; temp = temp->next)
2037 delete_if_ordinary (temp->name);
2038 always_delete_queue = 0;
2041 /* Delete all the files to be deleted on error. */
2044 delete_failure_queue (void)
2046 struct temp_file *temp;
2048 for (temp = failure_delete_queue; temp; temp = temp->next)
2049 delete_if_ordinary (temp->name);
2053 clear_failure_queue (void)
2055 failure_delete_queue = 0;
2058 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2060 If DO_MULTI is true iterate over the paths twice, first with multilib
2061 suffix then without, otherwise iterate over the paths once without
2062 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2063 to avoid visiting the same path twice, but we could do better. For
2064 instance, /usr/lib/../lib is considered different from /usr/lib.
2065 At least EXTRA_SPACE chars past the end of the path passed to
2066 CALLBACK are available for use by the callback.
2067 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2069 Returns the value returned by CALLBACK. */
2072 for_each_path (const struct path_prefix *paths,
2075 void *(*callback) (char *, void *),
2076 void *callback_info)
2078 struct prefix_list *pl;
2079 const char *multi_dir = NULL;
2080 const char *multi_os_dir = NULL;
2081 const char *multi_suffix;
2082 const char *just_multi_suffix;
2085 bool skip_multi_dir = false;
2086 bool skip_multi_os_dir = false;
2088 multi_suffix = machine_suffix;
2089 just_multi_suffix = just_machine_suffix;
2090 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0)
2092 multi_dir = concat (multilib_dir, dir_separator_str, NULL);
2093 multi_suffix = concat (multi_suffix, multi_dir, NULL);
2094 just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL);
2096 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0)
2097 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL);
2101 size_t multi_dir_len = 0;
2102 size_t multi_os_dir_len = 0;
2104 size_t just_suffix_len;
2108 multi_dir_len = strlen (multi_dir);
2110 multi_os_dir_len = strlen (multi_os_dir);
2111 suffix_len = strlen (multi_suffix);
2112 just_suffix_len = strlen (just_multi_suffix);
2116 len = paths->max_len + extra_space + 1;
2117 if (suffix_len > multi_os_dir_len)
2120 len += multi_os_dir_len;
2121 path = XNEWVEC (char, len);
2124 for (pl = paths->plist; pl != 0; pl = pl->next)
2126 len = strlen (pl->prefix);
2127 memcpy (path, pl->prefix, len);
2129 #if 0 /* MACHINE/VERSION isn't used anywhere DragonFly */
2130 /* Look first in MACHINE/VERSION subdirectory. */
2131 if (!skip_multi_dir)
2133 memcpy (path + len, multi_suffix, suffix_len + 1);
2134 ret = callback (path, callback_info);
2140 /* Some paths are tried with just the machine (ie. target)
2141 subdir. This is used for finding as, ld, etc. */
2143 && pl->require_machine_suffix == 2)
2145 memcpy (path + len, just_multi_suffix, just_suffix_len + 1);
2146 ret = callback (path, callback_info);
2151 /* Now try the base path. */
2152 if (!pl->require_machine_suffix
2153 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir))
2155 const char *this_multi;
2156 size_t this_multi_len;
2158 if (pl->os_multilib)
2160 this_multi = multi_os_dir;
2161 this_multi_len = multi_os_dir_len;
2165 this_multi = multi_dir;
2166 this_multi_len = multi_dir_len;
2170 memcpy (path + len, this_multi, this_multi_len + 1);
2174 ret = callback (path, callback_info);
2182 if (multi_dir == NULL && multi_os_dir == NULL)
2185 /* Run through the paths again, this time without multilibs.
2186 Don't repeat any we have already seen. */
2189 free (CONST_CAST (char *, multi_dir));
2191 free (CONST_CAST (char *, multi_suffix));
2192 multi_suffix = machine_suffix;
2193 free (CONST_CAST (char *, just_multi_suffix));
2194 just_multi_suffix = just_machine_suffix;
2197 skip_multi_dir = true;
2200 free (CONST_CAST (char *, multi_os_dir));
2201 multi_os_dir = NULL;
2204 skip_multi_os_dir = true;
2209 free (CONST_CAST (char *, multi_dir));
2210 free (CONST_CAST (char *, multi_suffix));
2211 free (CONST_CAST (char *, just_multi_suffix));
2214 free (CONST_CAST (char *, multi_os_dir));
2220 /* Callback for build_search_list. Adds path to obstack being built. */
2222 struct add_to_obstack_info {
2229 add_to_obstack (char *path, void *data)
2231 struct add_to_obstack_info *info = (struct add_to_obstack_info *) data;
2233 if (info->check_dir && !is_directory (path, false))
2236 if (!info->first_time)
2237 obstack_1grow (info->ob, PATH_SEPARATOR);
2239 obstack_grow (info->ob, path, strlen (path));
2241 info->first_time = false;
2245 /* Add or change the value of an environment variable, outputting the
2246 change to standard error if in verbose mode. */
2248 xputenv (const char *string)
2251 fnotice (stderr, "%s\n", string);
2252 putenv (CONST_CAST (char *, string));
2255 /* Build a list of search directories from PATHS.
2256 PREFIX is a string to prepend to the list.
2257 If CHECK_DIR_P is true we ensure the directory exists.
2258 If DO_MULTI is true, multilib paths are output first, then
2260 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2261 It is also used by the --print-search-dirs flag. */
2264 build_search_list (const struct path_prefix *paths, const char *prefix,
2265 bool check_dir, bool do_multi)
2267 struct add_to_obstack_info info;
2269 info.ob = &collect_obstack;
2270 info.check_dir = check_dir;
2271 info.first_time = true;
2273 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2274 obstack_1grow (&collect_obstack, '=');
2276 for_each_path (paths, do_multi, 0, add_to_obstack, &info);
2278 obstack_1grow (&collect_obstack, '\0');
2279 return XOBFINISH (&collect_obstack, char *);
2282 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2286 putenv_from_prefixes (const struct path_prefix *paths, const char *env_var,
2289 xputenv (build_search_list (paths, env_var, true, do_multi));
2292 /* Check whether NAME can be accessed in MODE. This is like access,
2293 except that it never considers directories to be executable. */
2296 access_check (const char *name, int mode)
2302 if (stat (name, &st) < 0
2303 || S_ISDIR (st.st_mode))
2307 return access (name, mode);
2310 /* Callback for find_a_file. Appends the file name to the directory
2311 path. If the resulting file exists in the right mode, return the
2312 full pathname to the file. */
2314 struct file_at_path_info {
2323 file_at_path (char *path, void *data)
2325 struct file_at_path_info *info = (struct file_at_path_info *) data;
2326 size_t len = strlen (path);
2328 memcpy (path + len, info->name, info->name_len);
2329 len += info->name_len;
2331 /* Some systems have a suffix for executable files.
2332 So try appending that first. */
2333 if (info->suffix_len)
2335 memcpy (path + len, info->suffix, info->suffix_len + 1);
2336 if (access_check (path, info->mode) == 0)
2341 if (access_check (path, info->mode) == 0)
2347 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2348 access to check permissions. If DO_MULTI is true, search multilib
2349 paths then non-multilib paths, otherwise do not search multilib paths.
2350 Return 0 if not found, otherwise return its name, allocated with malloc. */
2353 find_a_file (const struct path_prefix *pprefix, const char *name, int mode,
2356 struct file_at_path_info info;
2358 #ifdef DEFAULT_ASSEMBLER
2359 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2360 return xstrdup (DEFAULT_ASSEMBLER);
2363 #ifdef DEFAULT_LINKER
2364 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2365 return xstrdup (DEFAULT_LINKER);
2368 /* Determine the filename to execute (special case for absolute paths). */
2370 if (IS_ABSOLUTE_PATH (name))
2372 if (access (name, mode) == 0)
2373 return xstrdup (name);
2379 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "";
2380 info.name_len = strlen (info.name);
2381 info.suffix_len = strlen (info.suffix);
2384 return (char*) for_each_path (pprefix, do_multi,
2385 info.name_len + info.suffix_len,
2386 file_at_path, &info);
2389 /* Ranking of prefixes in the sort list. -B prefixes are put before
2392 enum path_prefix_priority
2394 PREFIX_PRIORITY_B_OPT,
2395 PREFIX_PRIORITY_LAST
2398 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2399 order according to PRIORITY. Within each PRIORITY, new entries are
2402 If WARN is nonzero, we will warn if no file is found
2403 through this prefix. WARN should point to an int
2404 which will be set to 1 if this entry is used.
2406 COMPONENT is the value to be passed to update_path.
2408 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2409 the complete value of machine_suffix.
2410 2 means try both machine_suffix and just_machine_suffix. */
2413 add_prefix (struct path_prefix *pprefix, const char *prefix,
2414 const char *component, /* enum prefix_priority */ int priority,
2415 int require_machine_suffix, int os_multilib)
2417 struct prefix_list *pl, **prev;
2420 for (prev = &pprefix->plist;
2421 (*prev) != NULL && (*prev)->priority <= priority;
2422 prev = &(*prev)->next)
2425 /* Keep track of the longest prefix. */
2427 prefix = update_path (prefix, component);
2428 len = strlen (prefix);
2429 if (len > pprefix->max_len)
2430 pprefix->max_len = len;
2432 pl = XNEW (struct prefix_list);
2433 pl->prefix = prefix;
2434 pl->require_machine_suffix = require_machine_suffix;
2435 pl->priority = priority;
2436 pl->os_multilib = os_multilib;
2438 /* Insert after PREV. */
2443 /* Same as add_prefix, but prepending target_system_root to prefix. */
2444 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2446 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2447 const char *component,
2448 /* enum prefix_priority */ int priority,
2449 int require_machine_suffix, int os_multilib)
2451 if (!IS_ABSOLUTE_PATH (prefix))
2452 fatal_error ("system path %qs is not absolute", prefix);
2454 if (target_system_root)
2456 char *sysroot_no_trailing_dir_separator = xstrdup (target_system_root);
2457 size_t sysroot_len = strlen (target_system_root);
2460 && target_system_root[sysroot_len - 1] == DIR_SEPARATOR)
2461 sysroot_no_trailing_dir_separator[sysroot_len - 1] = '\0';
2463 if (target_sysroot_suffix)
2464 prefix = concat (target_sysroot_suffix, prefix, NULL);
2465 prefix = concat (sysroot_no_trailing_dir_separator, prefix, NULL);
2466 free (sysroot_no_trailing_dir_separator);
2468 /* We have to override this because GCC's notion of sysroot
2469 moves along with GCC. */
2473 add_prefix (pprefix, prefix, component, priority,
2474 require_machine_suffix, os_multilib);
2477 /* Execute the command specified by the arguments on the current line of spec.
2478 When using pipes, this includes several piped-together commands
2479 with `|' between them.
2481 Return 0 if successful, -1 if failed. */
2487 int n_commands; /* # of command. */
2489 struct pex_obj *pex;
2492 const char *prog; /* program name. */
2493 const char **argv; /* vector of args. */
2497 struct command *commands; /* each command buffer with above info. */
2499 gcc_assert (!processing_spec_function);
2503 string = find_a_file (&exec_prefixes,
2504 VEC_index (const_char_p, argbuf, 0), X_OK, false);
2506 VEC_replace (const_char_p, argbuf, 0, string);
2507 insert_wrapper (wrapper_string);
2510 /* Count # of piped commands. */
2511 for (n_commands = 1, i = 0; VEC_iterate (const_char_p, argbuf, i, arg); i++)
2512 if (strcmp (arg, "|") == 0)
2515 /* Get storage for each command. */
2516 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2518 /* Split argbuf into its separate piped processes,
2519 and record info about each one.
2520 Also search for the programs that are to be run. */
2522 VEC_safe_push (const_char_p, heap, argbuf, 0);
2524 commands[0].prog = VEC_index (const_char_p, argbuf, 0); /* first command. */
2525 commands[0].argv = VEC_address (const_char_p, argbuf);
2527 if (!wrapper_string)
2529 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false);
2530 commands[0].argv[0] = (string) ? string : commands[0].argv[0];
2533 for (n_commands = 1, i = 0; VEC_iterate (const_char_p, argbuf, i, arg); i++)
2534 if (arg && strcmp (arg, "|") == 0)
2535 { /* each command. */
2536 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2537 fatal_error ("-pipe not supported");
2539 VEC_replace (const_char_p, argbuf, i, 0); /* Termination of
2541 commands[n_commands].prog = VEC_index (const_char_p, argbuf, i + 1);
2542 commands[n_commands].argv
2543 = &(VEC_address (const_char_p, argbuf))[i + 1];
2544 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2547 commands[n_commands].argv[0] = string;
2551 /* If -v, print what we are about to do, and maybe query. */
2555 /* For help listings, put a blank line between sub-processes. */
2556 if (print_help_list)
2557 fputc ('\n', stderr);
2559 /* Print each piped command as a separate line. */
2560 for (i = 0; i < n_commands; i++)
2562 const char *const *j;
2564 if (verbose_only_flag)
2566 for (j = commands[i].argv; *j; j++)
2569 for (p = *j; *p; ++p)
2570 if (!ISALNUM ((unsigned char) *p)
2571 && *p != '_' && *p != '/' && *p != '-' && *p != '.')
2575 fprintf (stderr, " \"");
2576 for (p = *j; *p; ++p)
2578 if (*p == '"' || *p == '\\' || *p == '$')
2579 fputc ('\\', stderr);
2582 fputc ('"', stderr);
2584 /* If it's empty, print "". */
2586 fprintf (stderr, " \"\"");
2588 fprintf (stderr, " %s", *j);
2592 for (j = commands[i].argv; *j; j++)
2593 /* If it's empty, print "". */
2595 fprintf (stderr, " \"\"");
2597 fprintf (stderr, " %s", *j);
2599 /* Print a pipe symbol after all but the last command. */
2600 if (i + 1 != n_commands)
2601 fprintf (stderr, " |");
2602 fprintf (stderr, "\n");
2605 if (verbose_only_flag != 0)
2607 /* verbose_only_flag should act as if the spec was
2608 executed, so increment execution_count before
2609 returning. This prevents spurious warnings about
2610 unused linker input files, etc. */
2615 fnotice (stderr, "\nGo ahead? (y or n) ");
2619 while (getchar () != '\n')
2622 if (i != 'y' && i != 'Y')
2627 #ifdef ENABLE_VALGRIND_CHECKING
2628 /* Run the each command through valgrind. To simplify prepending the
2629 path to valgrind and the option "-q" (for quiet operation unless
2630 something triggers), we allocate a separate argv array. */
2632 for (i = 0; i < n_commands; i++)
2638 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2641 argv = XALLOCAVEC (const char *, argc + 3);
2643 argv[0] = VALGRIND_PATH;
2645 for (j = 2; j < argc + 2; j++)
2646 argv[j] = commands[i].argv[j - 2];
2649 commands[i].argv = argv;
2650 commands[i].prog = argv[0];
2654 /* Run each piped subprocess. */
2656 pex = pex_init (PEX_USE_PIPES | ((report_times || report_times_to_file)
2657 ? PEX_RECORD_TIMES : 0),
2658 progname, temp_filename);
2660 fatal_error ("pex_init failed: %m");
2662 for (i = 0; i < n_commands; i++)
2666 const char *string = commands[i].argv[0];
2668 errmsg = pex_run (pex,
2669 ((i + 1 == n_commands ? PEX_LAST : 0)
2670 | (string == commands[i].prog ? PEX_SEARCH : 0)),
2671 string, CONST_CAST (char **, commands[i].argv),
2676 fatal_error (errmsg);
2680 pfatal_with_name (errmsg);
2684 if (string != commands[i].prog)
2685 free (CONST_CAST (char *, string));
2690 /* Wait for all the subprocesses to finish. */
2694 struct pex_time *times = NULL;
2697 statuses = (int *) alloca (n_commands * sizeof (int));
2698 if (!pex_get_status (pex, n_commands, statuses))
2699 fatal_error ("failed to get exit status: %m");
2701 if (report_times || report_times_to_file)
2703 times = (struct pex_time *) alloca (n_commands * sizeof (struct pex_time));
2704 if (!pex_get_times (pex, n_commands, times))
2705 fatal_error ("failed to get process times: %m");
2710 for (i = 0; i < n_commands; ++i)
2712 int status = statuses[i];
2714 if (WIFSIGNALED (status))
2717 /* SIGPIPE is a special case. It happens in -pipe mode
2718 when the compiler dies before the preprocessor is done,
2719 or the assembler dies before the compiler is done.
2720 There's generally been an error already, and this is
2721 just fallout. So don't generate another error unless
2722 we would otherwise have succeeded. */
2723 if (WTERMSIG (status) == SIGPIPE
2724 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2731 internal_error ("%s (program %s)",
2732 strsignal (WTERMSIG (status)), commands[i].prog);
2734 else if (WIFEXITED (status)
2735 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2737 if (WEXITSTATUS (status) > greatest_status)
2738 greatest_status = WEXITSTATUS (status);
2742 if (report_times || report_times_to_file)
2744 struct pex_time *pt = ×[i];
2747 ut = ((double) pt->user_seconds
2748 + (double) pt->user_microseconds / 1.0e6);
2749 st = ((double) pt->system_seconds
2750 + (double) pt->system_microseconds / 1.0e6);
2755 fnotice (stderr, "# %s %.2f %.2f\n",
2756 commands[i].prog, ut, st);
2758 if (report_times_to_file)
2761 const char *const *j;
2763 fprintf (report_times_to_file, "%g %g", ut, st);
2765 for (j = &commands[i].prog; *j; j = &commands[i].argv[++c])
2768 for (p = *j; *p; ++p)
2769 if (*p == '"' || *p == '\\' || *p == '$'
2775 fprintf (report_times_to_file, " \"");
2776 for (p = *j; *p; ++p)
2778 if (*p == '"' || *p == '\\' || *p == '$')
2779 fputc ('\\', report_times_to_file);
2780 fputc (*p, report_times_to_file);
2782 fputc ('"', report_times_to_file);
2785 fprintf (report_times_to_file, " %s", *j);
2788 fputc ('\n', report_times_to_file);
2798 /* Find all the switches given to us
2799 and make a vector describing them.
2800 The elements of the vector are strings, one per switch given.
2801 If a switch uses following arguments, then the `part1' field
2802 is the switch itself and the `args' field
2803 is a null-terminated vector containing the following arguments.
2804 Bits in the `live_cond' field are:
2805 SWITCH_LIVE to indicate this switch is true in a conditional spec.
2806 SWITCH_FALSE to indicate this switch is overridden by a later switch.
2807 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
2808 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
2809 in all do_spec calls afterwards. Used for %<S from self specs.
2810 The `validated' field is nonzero if any spec has looked at this switch;
2811 if it remains zero at the end of the run, it must be meaningless. */
2813 #define SWITCH_LIVE (1 << 0)
2814 #define SWITCH_FALSE (1 << 1)
2815 #define SWITCH_IGNORE (1 << 2)
2816 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
2817 #define SWITCH_KEEP_FOR_GCC (1 << 4)
2823 unsigned int live_cond;
2824 unsigned char validated;
2825 unsigned char ordering;
2828 static struct switchstr *switches;
2830 static int n_switches;
2832 static int n_switches_alloc;
2834 /* Set to zero if -fcompare-debug is disabled, positive if it's
2835 enabled and we're running the first compilation, negative if it's
2836 enabled and we're running the second compilation. For most of the
2837 time, it's in the range -1..1, but it can be temporarily set to 2
2838 or 3 to indicate that the -fcompare-debug flags didn't come from
2839 the command-line, but rather from the GCC_COMPARE_DEBUG environment
2840 variable, until a synthesized -fcompare-debug flag is added to the
2844 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
2845 int compare_debug_second;
2847 /* Set to the flags that should be passed to the second compilation in
2848 a -fcompare-debug compilation. */
2849 const char *compare_debug_opt;
2851 static struct switchstr *switches_debug_check[2];
2853 static int n_switches_debug_check[2];
2855 static int n_switches_alloc_debug_check[2];
2857 static char *debug_check_temp_file[2];
2859 /* Language is one of three things:
2861 1) The name of a real programming language.
2862 2) NULL, indicating that no one has figured out
2864 3) '*', indicating that the file should be passed
2869 const char *language;
2870 struct compiler *incompiler;
2875 /* Also a vector of input files specified. */
2877 static struct infile *infiles;
2881 static int n_infiles_alloc;
2883 /* True if multiple input files are being compiled to a single
2886 static bool combine_inputs;
2888 /* This counts the number of libraries added by lang_specific_driver, so that
2889 we can tell if there were any user supplied any files or libraries. */
2891 static int added_libraries;
2893 /* And a vector of corresponding output files is made up later. */
2895 const char **outfiles;
2897 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2899 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2900 is true if we should look for an executable suffix. DO_OBJ
2901 is true if we should look for an object suffix. */
2904 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
2905 int do_obj ATTRIBUTE_UNUSED)
2907 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2915 len = strlen (name);
2917 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2918 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2919 if (do_obj && len > 2
2920 && name[len - 2] == '.'
2921 && name[len - 1] == 'o')
2923 obstack_grow (&obstack, name, len - 2);
2924 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2925 name = XOBFINISH (&obstack, const char *);
2929 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2930 /* If there is no filetype, make it the executable suffix (which includes
2931 the "."). But don't get confused if we have just "-o". */
2932 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
2935 for (i = len - 1; i >= 0; i--)
2936 if (IS_DIR_SEPARATOR (name[i]))
2939 for (i++; i < len; i++)
2943 obstack_grow (&obstack, name, len);
2944 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
2945 strlen (TARGET_EXECUTABLE_SUFFIX));
2946 name = XOBFINISH (&obstack, const char *);
2953 /* Display the command line switches accepted by gcc. */
2957 printf (_("Usage: %s [options] file...\n"), progname);
2958 fputs (_("Options:\n"), stdout);
2960 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
2961 fputs (_(" --help Display this information\n"), stdout);
2962 fputs (_(" --target-help Display target specific command line options\n"), stdout);
2963 fputs (_(" --help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumented}}[,...]\n"), stdout);
2964 fputs (_(" Display specific types of command line options\n"), stdout);
2966 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
2967 fputs (_(" --version Display compiler version information\n"), stdout);
2968 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
2969 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
2970 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
2971 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
2972 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
2973 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
2974 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
2975 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
2977 -print-multi-lib Display the mapping between command line options and\n\
2978 multiple library search directories\n"), stdout);
2979 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
2980 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout);
2981 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout);
2982 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
2983 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
2984 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
2985 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
2986 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
2987 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
2988 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
2989 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout);
2991 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
2992 prefixes to other gcc components\n"), stdout);
2993 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
2994 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
2995 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
2996 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
2998 --sysroot=<directory> Use <directory> as the root directory for headers\n\
2999 and libraries\n"), stdout);
3000 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3001 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3002 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3003 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3004 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3005 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3006 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3007 fputs (_(" -pie Create a position independent executable\n"), stdout);
3008 fputs (_(" -shared Create a shared library\n"), stdout);
3010 -x <language> Specify the language of the following input files\n\
3011 Permissible languages include: c c++ assembler none\n\
3012 'none' means revert to the default behavior of\n\
3013 guessing the language based on the file's extension\n\
3017 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3018 passed on to the various sub-processes invoked by %s. In order to pass\n\
3019 other options on to these processes the -W<letter> options must be used.\n\
3022 /* The rest of the options are displayed by invocations of the various
3027 add_preprocessor_option (const char *option, int len)
3029 VEC_safe_push (char_p, heap, preprocessor_options,
3030 save_string (option, len));
3034 add_assembler_option (const char *option, int len)
3036 VEC_safe_push (char_p, heap, assembler_options, save_string (option, len));
3040 add_linker_option (const char *option, int len)
3042 VEC_safe_push (char_p, heap, linker_options, save_string (option, len));
3045 /* Allocate space for an input file in infiles. */
3050 if (n_infiles_alloc == 0)
3052 n_infiles_alloc = 16;
3053 infiles = XNEWVEC (struct infile, n_infiles_alloc);
3055 else if (n_infiles_alloc == n_infiles)
3057 n_infiles_alloc *= 2;
3058 infiles = XRESIZEVEC (struct infile, infiles, n_infiles_alloc);
3062 /* Store an input file with the given NAME and LANGUAGE in
3066 add_infile (const char *name, const char *language)
3069 infiles[n_infiles].name = name;
3070 infiles[n_infiles++].language = language;
3073 /* Allocate space for a switch in switches. */
3078 if (n_switches_alloc == 0)
3080 n_switches_alloc = 16;
3081 switches = XNEWVEC (struct switchstr, n_switches_alloc);
3083 else if (n_switches_alloc == n_switches)
3085 n_switches_alloc *= 2;
3086 switches = XRESIZEVEC (struct switchstr, switches, n_switches_alloc);
3090 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3091 as validated if VALIDATED. */
3094 save_switch (const char *opt, size_t n_args, const char *const *args,
3098 switches[n_switches].part1 = opt + 1;
3100 switches[n_switches].args = 0;
3103 switches[n_switches].args = XNEWVEC (const char *, n_args + 1);
3104 memcpy (switches[n_switches].args, args, n_args * sizeof (const char *));
3105 switches[n_switches].args[n_args] = NULL;
3108 switches[n_switches].live_cond = 0;
3109 switches[n_switches].validated = validated;
3110 switches[n_switches].ordering = 0;
3114 /* Handle an option DECODED that is unknown to the option-processing
3118 driver_unknown_option_callback (const struct cl_decoded_option *decoded)
3120 const char *opt = decoded->arg;
3121 if (opt[1] == 'W' && opt[2] == 'n' && opt[3] == 'o' && opt[4] == '-'
3122 && !(decoded->errors & CL_ERR_NEGATIVE))
3124 /* Leave unknown -Wno-* options for the compiler proper, to be
3125 diagnosed only if there are warnings. */
3126 save_switch (decoded->canonical_option[0],
3127 decoded->canonical_option_num_elements - 1,
3128 &decoded->canonical_option[1], false);
3135 /* Handle an option DECODED that is not marked as CL_DRIVER.
3136 LANG_MASK will always be CL_DRIVER. */
3139 driver_wrong_lang_callback (const struct cl_decoded_option *decoded,
3140 unsigned int lang_mask ATTRIBUTE_UNUSED)
3142 /* At this point, non-driver options are accepted (and expected to
3143 be passed down by specs) unless marked to be rejected by the
3144 driver. Options to be rejected by the driver but accepted by the
3145 compilers proper are treated just like completely unknown
3147 const struct cl_option *option = &cl_options[decoded->opt_index];
3149 if (option->cl_reject_driver)
3150 error ("unrecognized command line option %qs",
3151 decoded->orig_option_with_args_text);
3153 save_switch (decoded->canonical_option[0],
3154 decoded->canonical_option_num_elements - 1,
3155 &decoded->canonical_option[1], false);
3158 static const char *spec_lang = 0;
3159 static int last_language_n_infiles;
3161 /* Handle a driver option; arguments and return value as for
3165 driver_handle_option (struct gcc_options *opts,
3166 struct gcc_options *opts_set,
3167 const struct cl_decoded_option *decoded,
3168 unsigned int lang_mask ATTRIBUTE_UNUSED, int kind,
3170 const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED,
3171 diagnostic_context *dc)
3173 size_t opt_index = decoded->opt_index;
3174 const char *arg = decoded->arg;
3175 const char *compare_debug_replacement_opt;
3176 int value = decoded->value;
3177 bool validated = false;
3178 bool do_save = true;
3180 gcc_assert (opts == &global_options);
3181 gcc_assert (opts_set == &global_options_set);
3182 gcc_assert (kind == DK_UNSPECIFIED);
3183 gcc_assert (loc == UNKNOWN_LOCATION);
3184 gcc_assert (dc == global_dc);
3190 struct spec_list *sl;
3192 for (sl = specs; sl; sl = sl->next)
3193 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3194 if (link_command_spec)
3195 printf ("*link_command:\n%s\n\n", link_command_spec);
3199 case OPT_dumpversion:
3200 printf ("%s\n", spec_version);
3203 case OPT_dumpmachine:
3204 printf ("%s\n", spec_machine);
3210 /* CPP driver cannot obtain switch from cc1_options. */
3212 add_preprocessor_option ("--version", strlen ("--version"));
3213 add_assembler_option ("--version", strlen ("--version"));
3214 add_linker_option ("--version", strlen ("--version"));
3218 print_help_list = 1;
3220 /* CPP driver cannot obtain switch from cc1_options. */
3222 add_preprocessor_option ("--help", 6);
3223 add_assembler_option ("--help", 6);
3224 add_linker_option ("--help", 6);
3228 print_subprocess_help = 2;
3231 case OPT__target_help:
3232 print_subprocess_help = 1;
3234 /* CPP driver cannot obtain switch from cc1_options. */
3236 add_preprocessor_option ("--target-help", 13);
3237 add_assembler_option ("--target-help", 13);
3238 add_linker_option ("--target-help", 13);
3241 case OPT_pass_exit_codes:
3242 case OPT_print_search_dirs:
3243 case OPT_print_file_name_:
3244 case OPT_print_prog_name_:
3245 case OPT_print_multi_lib:
3246 case OPT_print_multi_directory:
3247 case OPT_print_sysroot:
3248 case OPT_print_multi_os_directory:
3249 case OPT_print_sysroot_headers_suffix:
3252 /* These options set the variables specified in common.opt
3253 automatically, and do not need to be saved for spec
3258 case OPT_print_libgcc_file_name:
3259 print_file_name = "libgcc.a";
3263 case OPT_fcompare_debug_second:
3264 compare_debug_second = 1;
3267 case OPT_fcompare_debug:
3271 compare_debug_replacement_opt = "-fcompare-debug=";
3273 goto compare_debug_with_arg;
3276 compare_debug_replacement_opt = "-fcompare-debug=-gtoggle";
3278 goto compare_debug_with_arg;
3285 case OPT_fcompare_debug_:
3286 compare_debug_replacement_opt = decoded->canonical_option[0];
3287 compare_debug_with_arg:
3288 gcc_assert (decoded->canonical_option_num_elements == 1);
3289 gcc_assert (arg != NULL);
3294 if (compare_debug < 0)
3295 compare_debug_opt = NULL;
3297 compare_debug_opt = arg;
3298 save_switch (compare_debug_replacement_opt, 0, NULL, validated);
3304 /* Pass the rest of this option to the assembler. */
3306 /* Split the argument at commas. */
3308 for (j = 0; arg[j]; j++)
3311 add_assembler_option (arg + prev, j - prev);
3315 /* Record the part after the last comma. */
3316 add_assembler_option (arg + prev, j - prev);
3324 /* Pass the rest of this option to the preprocessor. */
3326 /* Split the argument at commas. */
3328 for (j = 0; arg[j]; j++)
3331 add_preprocessor_option (arg + prev, j - prev);
3335 /* Record the part after the last comma. */
3336 add_preprocessor_option (arg + prev, j - prev);
3344 /* Split the argument at commas. */
3346 for (j = 0; arg[j]; j++)
3349 add_infile (save_string (arg + prev, j - prev), "*");
3352 /* Record the part after the last comma. */
3353 add_infile (arg + prev, "*");
3359 add_infile (arg, "*");
3363 case OPT_Xpreprocessor:
3364 add_preprocessor_option (arg, strlen (arg));
3368 case OPT_Xassembler:
3369 add_assembler_option (arg, strlen (arg));
3374 /* POSIX allows separation of -l and the lib arg; canonicalize
3375 by concatenating -l with its arg */
3376 add_infile (concat ("-l", arg, NULL), "*");
3381 /* Similarly, canonicalize -L for linkers that may not accept
3382 separate arguments. */
3383 save_switch (concat ("-L", arg, NULL), 0, NULL, validated);
3388 save_switch (concat ("-F", arg, NULL), 0, NULL, validated);
3391 case OPT_save_temps:
3392 save_temps_flag = SAVE_TEMPS_CWD;
3396 case OPT_save_temps_:
3397 if (strcmp (arg, "cwd") == 0)
3398 save_temps_flag = SAVE_TEMPS_CWD;
3399 else if (strcmp (arg, "obj") == 0
3400 || strcmp (arg, "object") == 0)
3401 save_temps_flag = SAVE_TEMPS_OBJ;
3403 fatal_error ("%qs is an unknown -save-temps option",
3404 decoded->orig_option_with_args_text);
3407 case OPT_no_canonical_prefixes:
3408 /* Already handled as a special case, so ignored here. */
3414 /* These options set the variables specified in common.opt
3415 automatically, but do need to be saved for spec
3421 struct user_specs *user = XNEW (struct user_specs);
3423 user->next = (struct user_specs *) 0;
3424 user->filename = arg;
3425 if (user_specs_tail)
3426 user_specs_tail->next = user;
3428 user_specs_head = user;
3429 user_specs_tail = user;
3435 target_system_root = arg;
3436 target_system_root_changed = 1;
3441 if (report_times_to_file)
3442 fclose (report_times_to_file);
3443 report_times_to_file = fopen (arg, "a");
3449 This is similar to -v except that there is no execution
3450 of the commands and the echoed arguments are quoted. It
3451 is intended for use in shell scripts to capture the
3452 driver-generated command line. */
3453 verbose_only_flag++;
3460 size_t len = strlen (arg);
3462 /* Catch the case where the user has forgotten to append a
3463 directory separator to the path. Note, they may be using
3464 -B to add an executable name prefix, eg "i386-elf-", in
3465 order to distinguish between multiple installations of
3466 GCC in the same directory. Hence we must check to see
3467 if appending a directory separator actually makes a
3468 valid directory name. */
3469 if (!IS_DIR_SEPARATOR (arg[len - 1])
3470 && is_directory (arg, false))
3472 char *tmp = XNEWVEC (char, len + 2);
3474 tmp[len] = DIR_SEPARATOR;
3479 add_prefix (&exec_prefixes, arg, NULL,
3480 PREFIX_PRIORITY_B_OPT, 0, 0);
3481 add_prefix (&startfile_prefixes, arg, NULL,
3482 PREFIX_PRIORITY_B_OPT, 0, 0);
3483 add_prefix (&include_prefixes, arg, NULL,
3484 PREFIX_PRIORITY_B_OPT, 0, 0);
3491 if (!strcmp (spec_lang, "none"))
3492 /* Suppress the warning if -xnone comes after the last input
3493 file, because alternate command interfaces like g++ might
3494 find it useful to place -xnone after each input file. */
3497 last_language_n_infiles = n_infiles;
3503 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3504 arg = convert_filename (arg, ! have_c, 0);
3506 /* Save the output name in case -save-temps=obj was used. */
3507 save_temps_prefix = xstrdup (arg);
3508 /* On some systems, ld cannot handle "-o" without a space. So
3509 split the option from its argument. */
3510 save_switch ("-o", 1, &arg, validated);
3513 case OPT_static_libgcc:
3514 case OPT_shared_libgcc:
3515 case OPT_static_libgfortran:
3516 case OPT_static_libstdc__:
3517 /* These are always valid, since gcc.c itself understands the
3518 first two, gfortranspec.c understands -static-libgfortran and
3519 g++spec.c understands -static-libstdc++ */
3524 /* Various driver options need no special processing at this
3525 point, having been handled in a prescan above or being
3526 handled by specs. */
3531 save_switch (decoded->canonical_option[0],
3532 decoded->canonical_option_num_elements - 1,
3533 &decoded->canonical_option[1], validated);
3537 /* Put the driver's standard set of option handlers in *HANDLERS. */
3540 set_option_handlers (struct cl_option_handlers *handlers)
3542 handlers->unknown_option_callback = driver_unknown_option_callback;
3543 handlers->wrong_lang_callback = driver_wrong_lang_callback;
3544 handlers->num_handlers = 3;
3545 handlers->handlers[0].handler = driver_handle_option;
3546 handlers->handlers[0].mask = CL_DRIVER;
3547 handlers->handlers[1].handler = common_handle_option;
3548 handlers->handlers[1].mask = CL_COMMON;
3549 handlers->handlers[2].handler = target_handle_option;
3550 handlers->handlers[2].mask = CL_TARGET;
3553 /* Create the vector `switches' and its contents.
3554 Store its length in `n_switches'. */
3557 process_command (unsigned int decoded_options_count,
3558 struct cl_decoded_option *decoded_options)
3562 const char *tooldir_prefix;
3563 char *(*get_relative_prefix) (const char *, const char *,
3564 const char *) = NULL;
3565 struct cl_option_handlers handlers;
3568 gcc_exec_prefix = getenv ("GCC_EXEC_PREFIX");
3572 added_libraries = 0;
3574 /* Figure compiler version from version string. */
3576 compiler_version = temp1 = xstrdup (version_string);
3578 for (; *temp1; ++temp1)
3587 /* Handle any -no-canonical-prefixes flag early, to assign the function
3588 that builds relative prefixes. This function creates default search
3589 paths that are needed later in normal option handling. */
3591 for (j = 1; j < decoded_options_count; j++)
3593 if (decoded_options[j].opt_index == OPT_no_canonical_prefixes)
3595 get_relative_prefix = make_relative_prefix_ignore_links;
3599 if (! get_relative_prefix)
3600 get_relative_prefix = make_relative_prefix;
3602 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3603 see if we can create it from the pathname specified in
3604 decoded_options[0].arg. */
3606 gcc_libexec_prefix = standard_libexec_prefix;
3608 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3609 if (!gcc_exec_prefix)
3611 #if 0 /* Never use relative prefix (not bootstrapped) */
3612 gcc_exec_prefix = get_relative_prefix (decoded_options[0].arg,
3613 standard_bindir_prefix,
3614 standard_exec_prefix);
3615 gcc_libexec_prefix = get_relative_prefix (decoded_options[0].arg,
3616 standard_bindir_prefix,
3617 standard_libexec_prefix);
3618 if (gcc_exec_prefix)
3619 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3624 /* make_relative_prefix requires a program name, but
3625 GCC_EXEC_PREFIX is typically a directory name with a trailing
3626 / (which is ignored by make_relative_prefix), so append a
3628 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL);
3629 gcc_libexec_prefix = get_relative_prefix (tmp_prefix,
3630 standard_exec_prefix,
3631 standard_libexec_prefix);
3633 /* The path is unrelocated, so fallback to the original setting. */
3634 if (!gcc_libexec_prefix)
3635 gcc_libexec_prefix = standard_libexec_prefix;
3641 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3642 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3643 or an automatically created GCC_EXEC_PREFIX from
3644 decoded_options[0].arg. */
3646 /* Do language-specific adjustment/addition of flags. */
3647 lang_specific_driver (&decoded_options, &decoded_options_count,
3650 if (gcc_exec_prefix)
3652 int len = strlen (gcc_exec_prefix);
3654 if (len > (int) sizeof ("/lib/gcc/") - 1
3655 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3657 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3658 if (IS_DIR_SEPARATOR (*temp)
3659 && filename_ncmp (temp + 1, "lib", 3) == 0
3660 && IS_DIR_SEPARATOR (temp[4])
3661 && filename_ncmp (temp + 5, "gcc", 3) == 0)
3662 len -= sizeof ("/lib/gcc/") - 1;
3665 #if 0 /* Bad Paths */
3666 set_std_prefix (gcc_exec_prefix, len);
3667 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3668 PREFIX_PRIORITY_LAST, 0, 0);
3669 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3670 PREFIX_PRIORITY_LAST, 0, 0);
3674 /* COMPILER_PATH and LIBRARY_PATH have values
3675 that are lists of directory names with colons. */
3677 temp = getenv ("COMPILER_PATH");
3680 const char *startp, *endp;
3681 char *nstore = (char *) alloca (strlen (temp) + 3);
3683 startp = endp = temp;
3686 if (*endp == PATH_SEPARATOR || *endp == 0)
3688 strncpy (nstore, startp, endp - startp);
3690 strcpy (nstore, concat (".", dir_separator_str, NULL));
3691 else if (!IS_DIR_SEPARATOR (endp[-1]))
3693 nstore[endp - startp] = DIR_SEPARATOR;
3694 nstore[endp - startp + 1] = 0;
3697 nstore[endp - startp] = 0;
3698 add_prefix (&exec_prefixes, nstore, 0,
3699 PREFIX_PRIORITY_LAST, 0, 0);
3700 add_prefix (&include_prefixes, nstore, 0,
3701 PREFIX_PRIORITY_LAST, 0, 0);
3704 endp = startp = endp + 1;
3711 temp = getenv (LIBRARY_PATH_ENV);
3712 if (temp && *cross_compile == '0')
3714 const char *startp, *endp;
3715 char *nstore = (char *) alloca (strlen (temp) + 3);
3717 startp = endp = temp;
3720 if (*endp == PATH_SEPARATOR || *endp == 0)
3722 strncpy (nstore, startp, endp - startp);
3724 strcpy (nstore, concat (".", dir_separator_str, NULL));
3725 else if (!IS_DIR_SEPARATOR (endp[-1]))
3727 nstore[endp - startp] = DIR_SEPARATOR;
3728 nstore[endp - startp + 1] = 0;
3731 nstore[endp - startp] = 0;
3732 add_prefix (&startfile_prefixes, nstore, NULL,
3733 PREFIX_PRIORITY_LAST, 0, 1);
3736 endp = startp = endp + 1;
3743 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3744 temp = getenv ("LPATH");
3745 if (temp && *cross_compile == '0')
3747 const char *startp, *endp;
3748 char *nstore = (char *) alloca (strlen (temp) + 3);
3750 startp = endp = temp;
3753 if (*endp == PATH_SEPARATOR || *endp == 0)
3755 strncpy (nstore, startp, endp - startp);
3757 strcpy (nstore, concat (".", dir_separator_str, NULL));
3758 else if (!IS_DIR_SEPARATOR (endp[-1]))
3760 nstore[endp - startp] = DIR_SEPARATOR;
3761 nstore[endp - startp + 1] = 0;
3764 nstore[endp - startp] = 0;
3765 add_prefix (&startfile_prefixes, nstore, NULL,
3766 PREFIX_PRIORITY_LAST, 0, 1);
3769 endp = startp = endp + 1;
3776 /* Process the options and store input files and switches in their
3779 last_language_n_infiles = -1;
3781 set_option_handlers (&handlers);
3783 for (j = 1; j < decoded_options_count; j++)
3785 switch (decoded_options[j].opt_index)
3797 for (j = 1; j < decoded_options_count; j++)
3799 if (decoded_options[j].opt_index == OPT_SPECIAL_input_file)
3801 const char *arg = decoded_options[j].arg;
3802 const char *p = strrchr (arg, '@');
3806 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3807 arg = convert_filename (arg, 0, access (arg, F_OK));
3809 /* For LTO static archive support we handle input file
3810 specifications that are composed of a filename and
3811 an offset like FNAME@OFFSET. */
3814 && sscanf (p, "@%li%n", &offset, &consumed) >= 1
3815 && strlen (p) == (unsigned int)consumed)
3817 fname = (char *)xmalloc (p - arg + 1);
3818 memcpy (fname, arg, p - arg);
3819 fname[p - arg] = '\0';
3820 /* Only accept non-stdin and existing FNAME parts, otherwise
3821 try with the full name. */
3822 if (strcmp (fname, "-") == 0 || access (fname, F_OK) < 0)
3825 fname = xstrdup (arg);
3829 fname = xstrdup (arg);
3831 if (strcmp (fname, "-") != 0 && access (fname, F_OK) < 0)
3832 perror_with_name (fname);
3834 add_infile (arg, spec_lang);
3840 read_cmdline_option (&global_options, &global_options_set,
3841 decoded_options + j, UNKNOWN_LOCATION,
3842 CL_DRIVER, &handlers, global_dc);
3845 /* If -save-temps=obj and -o name, create the prefix to use for %b.
3846 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
3847 if (save_temps_flag == SAVE_TEMPS_OBJ && save_temps_prefix != NULL)
3849 save_temps_length = strlen (save_temps_prefix);
3850 temp = strrchr (lbasename (save_temps_prefix), '.');
3853 save_temps_length -= strlen (temp);
3854 save_temps_prefix[save_temps_length] = '\0';
3858 else if (save_temps_prefix != NULL)
3860 free (save_temps_prefix);
3861 save_temps_prefix = NULL;
3864 if (save_temps_flag && use_pipes)
3866 /* -save-temps overrides -pipe, so that temp files are produced */
3867 if (save_temps_flag)
3868 warning (0, "-pipe ignored because -save-temps specified");
3874 const char *gcd = getenv ("GCC_COMPARE_DEBUG");
3876 if (gcd && gcd[0] == '-')
3879 compare_debug_opt = gcd;
3881 else if (gcd && *gcd && strcmp (gcd, "0"))
3884 compare_debug_opt = "-gtoggle";
3887 else if (compare_debug < 0)
3890 gcc_assert (!compare_debug_opt);
3893 /* Set up the search paths. We add directories that we expect to
3894 contain GNU Toolchain components before directories specified by
3895 the machine description so that we will find GNU components (like
3896 the GNU assembler) before those of the host system. */
3898 /* If we don't know where the toolchain has been installed, use the
3899 configured-in locations. */
3900 if (!gcc_exec_prefix)
3903 add_prefix (&exec_prefixes, standard_libexec_prefix, NULL,
3904 PREFIX_PRIORITY_LAST, 0, 0);
3905 #if 0 /* Bad paths */
3906 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
3907 PREFIX_PRIORITY_LAST, 1, 0);
3908 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
3909 PREFIX_PRIORITY_LAST, 2, 0);
3910 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3911 PREFIX_PRIORITY_LAST, 2, 0);
3914 #if 0 /* Bad paths */
3915 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3916 PREFIX_PRIORITY_LAST, 1, 0);
3920 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix));
3921 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3922 dir_separator_str, NULL);
3924 /* Look for tools relative to the location from which the driver is
3925 running, or, if that is not available, the configured prefix. */
3927 = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
3928 spec_machine, dir_separator_str,
3929 spec_version, dir_separator_str, tooldir_prefix, NULL);
3931 #if 0 /* Bad paths */
3932 add_prefix (&exec_prefixes,
3933 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3934 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0);
3935 add_prefix (&startfile_prefixes,
3936 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3937 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1);
3940 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
3941 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
3942 then consider it to relocate with the rest of the GCC installation
3943 if GCC_EXEC_PREFIX is set.
3944 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
3945 if (target_system_root && !target_system_root_changed && gcc_exec_prefix)
3947 char *tmp_prefix = get_relative_prefix (decoded_options[0].arg,
3948 standard_bindir_prefix,
3949 target_system_root);
3950 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
3952 target_system_root = tmp_prefix;
3953 target_system_root_changed = 1;
3958 /* More prefixes are enabled in main, after we read the specs file
3959 and determine whether this is cross-compilation or not. */
3961 if (n_infiles == last_language_n_infiles && spec_lang != 0)
3962 warning (0, "%<-x %s%> after last input file has no effect", spec_lang);
3964 if (compare_debug == 2 || compare_debug == 3)
3967 switches[n_switches].part1 = concat ("fcompare-debug=",
3970 switches[n_switches].args = 0;
3971 switches[n_switches].live_cond = 0;
3972 switches[n_switches].validated = 0;
3973 switches[n_switches].ordering = 0;
3978 /* Ensure we only invoke each subprocess once. */
3979 if (print_subprocess_help || print_help_list || print_version)
3983 /* Create a dummy input file, so that we can pass
3984 the help option on to the various sub-processes. */
3985 add_infile ("help-dummy", "c");
3989 switches[n_switches].part1 = 0;
3991 infiles[n_infiles].name = 0;
3994 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
3995 and place that in the environment. */
3998 set_collect_gcc_options (void)
4003 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4005 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4006 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4009 for (i = 0; (int) i < n_switches; i++)
4011 const char *const *args;
4014 obstack_grow (&collect_obstack, " ", 1);
4018 /* Ignore elided switches. */
4019 if ((switches[i].live_cond
4020 & (SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC))
4024 obstack_grow (&collect_obstack, "'-", 2);
4025 q = switches[i].part1;
4026 while ((p = strchr (q, '\'')))
4028 obstack_grow (&collect_obstack, q, p - q);
4029 obstack_grow (&collect_obstack, "'\\''", 4);
4032 obstack_grow (&collect_obstack, q, strlen (q));
4033 obstack_grow (&collect_obstack, "'", 1);
4035 for (args = switches[i].args; args && *args; args++)
4037 obstack_grow (&collect_obstack, " '", 2);
4039 while ((p = strchr (q, '\'')))
4041 obstack_grow (&collect_obstack, q, p - q);
4042 obstack_grow (&collect_obstack, "'\\''", 4);
4045 obstack_grow (&collect_obstack, q, strlen (q));
4046 obstack_grow (&collect_obstack, "'", 1);
4049 obstack_grow (&collect_obstack, "\0", 1);
4050 xputenv (XOBFINISH (&collect_obstack, char *));
4053 /* Process a spec string, accumulating and running commands. */
4055 /* These variables describe the input file name.
4056 input_file_number is the index on outfiles of this file,
4057 so that the output file name can be stored for later use by %o.
4058 input_basename is the start of the part of the input file
4059 sans all directory names, and basename_length is the number
4060 of characters starting there excluding the suffix .c or whatever. */
4062 static const char *gcc_input_filename;
4063 static int input_file_number;
4064 size_t input_filename_length;
4065 static int basename_length;
4066 static int suffixed_basename_length;
4067 static const char *input_basename;
4068 static const char *input_suffix;
4069 #ifndef HOST_LACKS_INODE_NUMBERS
4070 static struct stat input_stat;
4072 static int input_stat_set;
4074 /* The compiler used to process the current input file. */
4075 static struct compiler *input_file_compiler;
4077 /* These are variables used within do_spec and do_spec_1. */
4079 /* Nonzero if an arg has been started and not yet terminated
4080 (with space, tab or newline). */
4081 static int arg_going;
4083 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4084 is a temporary file name. */
4085 static int delete_this_arg;
4087 /* Nonzero means %w has been seen; the next arg to be terminated
4088 is the output file name of this compilation. */
4089 static int this_is_output_file;
4091 /* Nonzero means %s has been seen; the next arg to be terminated
4092 is the name of a library file and we should try the standard
4093 search dirs for it. */
4094 static int this_is_library_file;
4096 /* Nonzero means %T has been seen; the next arg to be terminated
4097 is the name of a linker script and we should try all of the
4098 standard search dirs for it. If it is found insert a --script
4099 command line switch and then substitute the full path in place,
4100 otherwise generate an error message. */
4101 static int this_is_linker_script;
4103 /* Nonzero means that the input of this command is coming from a pipe. */
4104 static int input_from_pipe;
4106 /* Nonnull means substitute this for any suffix when outputting a switches
4108 static const char *suffix_subst;
4110 /* If there is an argument being accumulated, terminate it and store it. */
4113 end_going_arg (void)
4119 obstack_1grow (&obstack, 0);
4120 string = XOBFINISH (&obstack, const char *);
4121 if (this_is_library_file)
4122 string = find_file (string);
4123 if (this_is_linker_script)
4125 char * full_script_path = find_a_file (&startfile_prefixes, string, R_OK, true);
4127 if (full_script_path == NULL)
4129 error ("unable to locate default linker script %qs in the library search paths", string);
4130 /* Script was not found on search path. */
4133 store_arg ("--script", false, false);
4134 string = full_script_path;
4136 store_arg (string, delete_this_arg, this_is_output_file);
4137 if (this_is_output_file)
4138 outfiles[input_file_number] = string;
4144 /* Parse the WRAPPER string which is a comma separated list of the command line
4145 and insert them into the beginning of argbuf. */
4148 insert_wrapper (const char *wrapper)
4152 char *buf = xstrdup (wrapper);
4154 unsigned int old_length = VEC_length (const_char_p, argbuf);
4162 while ((p = strchr (p, ',')) != NULL);
4164 VEC_safe_grow (const_char_p, heap, argbuf, old_length + n);
4165 memmove (VEC_address (const_char_p, argbuf) + n,
4166 VEC_address (const_char_p, argbuf),
4167 old_length * sizeof (const_char_p));
4178 VEC_replace (const_char_p, argbuf, i, p);
4181 while ((p = strchr (p, ',')) != NULL);
4182 gcc_assert (i == n);
4185 /* Process the spec SPEC and run the commands specified therein.
4186 Returns 0 if the spec is successfully processed; -1 if failed. */
4189 do_spec (const char *spec)
4193 value = do_spec_2 (spec);
4195 /* Force out any unfinished command.
4196 If -pipe, this forces out the last command if it ended in `|'. */
4199 if (VEC_length (const_char_p, argbuf) > 0
4200 && !strcmp (VEC_last (const_char_p, argbuf), "|"))
4201 VEC_pop (const_char_p, argbuf);
4203 set_collect_gcc_options ();
4205 if (VEC_length (const_char_p, argbuf) > 0)
4213 do_spec_2 (const char *spec)
4219 delete_this_arg = 0;
4220 this_is_output_file = 0;
4221 this_is_library_file = 0;
4222 this_is_linker_script = 0;
4223 input_from_pipe = 0;
4224 suffix_subst = NULL;
4226 result = do_spec_1 (spec, 0, NULL);
4234 /* Process the given spec string and add any new options to the end
4235 of the switches/n_switches array. */
4238 do_option_spec (const char *name, const char *spec)
4240 unsigned int i, value_count, value_len;
4241 const char *p, *q, *value;
4242 char *tmp_spec, *tmp_spec_p;
4244 if (configure_default_options[0].name == NULL)
4247 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4248 if (strcmp (configure_default_options[i].name, name) == 0)
4250 if (i == ARRAY_SIZE (configure_default_options))
4253 value = configure_default_options[i].value;
4254 value_len = strlen (value);
4256 /* Compute the size of the final spec. */
4259 while ((p = strstr (p, "%(VALUE)")) != NULL)
4265 /* Replace each %(VALUE) by the specified value. */
4266 tmp_spec = (char *) alloca (strlen (spec) + 1
4267 + value_count * (value_len - strlen ("%(VALUE)")));
4268 tmp_spec_p = tmp_spec;
4270 while ((p = strstr (q, "%(VALUE)")) != NULL)
4272 memcpy (tmp_spec_p, q, p - q);
4273 tmp_spec_p = tmp_spec_p + (p - q);
4274 memcpy (tmp_spec_p, value, value_len);
4275 tmp_spec_p += value_len;
4276 q = p + strlen ("%(VALUE)");
4278 strcpy (tmp_spec_p, q);
4280 do_self_spec (tmp_spec);
4283 /* Process the given spec string and add any new options to the end
4284 of the switches/n_switches array. */
4287 do_self_spec (const char *spec)
4292 do_spec_1 (" ", 0, NULL);
4294 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4295 do_self_specs adds the replacements to switches array, so it shouldn't
4296 be processed afterwards. */
4297 for (i = 0; i < n_switches; i++)
4298 if ((switches[i].live_cond & SWITCH_IGNORE))
4299 switches[i].live_cond |= SWITCH_IGNORE_PERMANENTLY;
4301 if (VEC_length (const_char_p, argbuf) > 0)
4303 const char **argbuf_copy;
4304 struct cl_decoded_option *decoded_options;
4305 struct cl_option_handlers handlers;
4306 unsigned int decoded_options_count;
4309 /* Create a copy of argbuf with a dummy argv[0] entry for
4310 decode_cmdline_options_to_array. */
4311 argbuf_copy = XNEWVEC (const char *,
4312 VEC_length (const_char_p, argbuf) + 1);
4313 argbuf_copy[0] = "";
4314 memcpy (argbuf_copy + 1, VEC_address (const_char_p, argbuf),
4315 VEC_length (const_char_p, argbuf) * sizeof (const char *));
4317 decode_cmdline_options_to_array (VEC_length (const_char_p, argbuf) + 1,
4319 CL_DRIVER, &decoded_options,
4320 &decoded_options_count);
4322 set_option_handlers (&handlers);
4324 for (j = 1; j < decoded_options_count; j++)
4326 switch (decoded_options[j].opt_index)
4328 case OPT_SPECIAL_input_file:
4329 /* Specs should only generate options, not input
4331 if (strcmp (decoded_options[j].arg, "-") != 0)
4332 fatal_error ("switch %qs does not start with %<-%>",
4333 decoded_options[j].arg);
4335 fatal_error ("spec-generated switch is just %<-%>");
4338 case OPT_fcompare_debug_second:
4339 case OPT_fcompare_debug:
4340 case OPT_fcompare_debug_:
4342 /* Avoid duplicate processing of some options from
4343 compare-debug specs; just save them here. */
4344 save_switch (decoded_options[j].canonical_option[0],
4345 (decoded_options[j].canonical_option_num_elements
4347 &decoded_options[j].canonical_option[1], false);
4351 read_cmdline_option (&global_options, &global_options_set,
4352 decoded_options + j, UNKNOWN_LOCATION,
4353 CL_DRIVER, &handlers, global_dc);
4359 switches[n_switches].part1 = 0;
4363 /* Callback for processing %D and %I specs. */
4365 struct spec_path_info {
4370 bool separate_options;
4374 spec_path (char *path, void *data)
4376 struct spec_path_info *info = (struct spec_path_info *) data;
4380 if (info->omit_relative && !IS_ABSOLUTE_PATH (path))
4383 if (info->append_len != 0)
4385 len = strlen (path);
4386 memcpy (path + len, info->append, info->append_len + 1);
4389 if (!is_directory (path, true))
4392 do_spec_1 (info->option, 1, NULL);
4393 if (info->separate_options)
4394 do_spec_1 (" ", 0, NULL);
4396 if (info->append_len == 0)
4398 len = strlen (path);
4399 save = path[len - 1];
4400 if (IS_DIR_SEPARATOR (path[len - 1]))
4401 path[len - 1] = '\0';
4404 do_spec_1 (path, 1, NULL);
4405 do_spec_1 (" ", 0, NULL);
4407 /* Must not damage the original path. */
4408 if (info->append_len == 0)
4409 path[len - 1] = save;
4414 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4418 create_at_file (char **argv)
4420 char *temp_file = make_temp_file ("");
4421 char *at_argument = concat ("@", temp_file, NULL);
4422 FILE *f = fopen (temp_file, "w");
4426 fatal_error ("could not open temporary response file %s",
4429 status = writeargv (argv, f);
4432 fatal_error ("could not write to temporary response file %s",
4435 status = fclose (f);
4438 fatal_error ("could not close temporary response file %s",
4441 store_arg (at_argument, 0, 0);
4443 record_temp_file (temp_file, !save_temps_flag, !save_temps_flag);
4446 /* True if we should compile INFILE. */
4449 compile_input_file_p (struct infile *infile)
4451 if ((!infile->language) || (infile->language[0] != '*'))
4452 if (infile->incompiler == input_file_compiler)
4457 /* Process each member of VEC as a spec. */
4460 do_specs_vec (VEC(char_p,heap) *vec)
4465 FOR_EACH_VEC_ELT (char_p, vec, ix, opt)
4467 do_spec_1 (opt, 1, NULL);
4468 /* Make each accumulated option a separate argument. */
4469 do_spec_1 (" ", 0, NULL);
4473 /* Process the sub-spec SPEC as a portion of a larger spec.
4474 This is like processing a whole spec except that we do
4475 not initialize at the beginning and we do not supply a
4476 newline by default at the end.
4477 INSWITCH nonzero means don't process %-sequences in SPEC;
4478 in this case, % is treated as an ordinary character.
4479 This is used while substituting switches.
4480 INSWITCH nonzero also causes SPC not to terminate an argument.
4482 Value is zero unless a line was finished
4483 and the command on that line reported an error. */
4486 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4488 const char *p = spec;
4493 /* If it's an empty string argument to a switch, keep it as is. */
4494 if (inswitch && !*p)
4498 /* If substituting a switch, treat all chars like letters.
4499 Otherwise, NL, SPC, TAB and % are special. */
4500 switch (inswitch ? 'a' : c)
4505 if (VEC_length (const_char_p, argbuf) > 0
4506 && !strcmp (VEC_last (const_char_p, argbuf), "|"))
4508 /* A `|' before the newline means use a pipe here,
4509 but only if -pipe was specified.
4510 Otherwise, execute now and don't pass the `|' as an arg. */
4513 input_from_pipe = 1;
4517 VEC_pop (const_char_p, argbuf);
4520 set_collect_gcc_options ();
4522 if (VEC_length (const_char_p, argbuf) > 0)
4528 /* Reinitialize for a new command, and 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;
4535 input_from_pipe = 0;
4542 obstack_1grow (&obstack, c);
4550 /* Reinitialize for a new argument. */
4551 delete_this_arg = 0;
4552 this_is_output_file = 0;
4553 this_is_library_file = 0;
4554 this_is_linker_script = 0;
4561 fatal_error ("spec %qs invalid", spec);
4564 if (save_temps_length)
4565 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4567 obstack_grow (&obstack, input_basename, basename_length);
4568 if (compare_debug < 0)
4569 obstack_grow (&obstack, ".gk", 3);
4574 if (save_temps_length)
4575 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4577 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4578 if (compare_debug < 0)
4579 obstack_grow (&obstack, ".gk", 3);
4584 delete_this_arg = 2;
4587 /* Dump out the directories specified with LIBRARY_PATH,
4588 followed by the absolute directories
4589 that we search for startfiles. */
4592 struct spec_path_info info;
4595 info.append_len = 0;
4596 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4597 /* Used on systems which record the specified -L dirs
4598 and use them to search for dynamic linking.
4599 Relative directories always come from -B,
4600 and it is better not to use them for searching
4601 at run time. In particular, stage1 loses. */
4602 info.omit_relative = true;
4604 info.omit_relative = false;
4606 info.separate_options = false;
4608 for_each_path (&startfile_prefixes, true, 0, spec_path, &info);
4613 /* %efoo means report an error with `foo' as error message
4614 and don't execute any more commands for this file. */
4618 while (*p != 0 && *p != '\n')
4620 buf = (char *) alloca (p - q + 1);
4621 strncpy (buf, q, p - q);
4623 error ("%s", _(buf));
4628 /* %nfoo means report a notice with `foo' on stderr. */
4632 while (*p != 0 && *p != '\n')
4634 buf = (char *) alloca (p - q + 1);
4635 strncpy (buf, q, p - q);
4637 inform (0, "%s", _(buf));
4647 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4648 defined, and it is not a directory, and it is
4649 writable, use it. Otherwise, treat this like any
4650 other temporary file. */
4652 if ((!save_temps_flag)
4653 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4654 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4656 obstack_grow (&obstack, HOST_BIT_BUCKET,
4657 strlen (HOST_BIT_BUCKET));
4658 delete_this_arg = 0;
4663 goto create_temp_file;
4667 obstack_1grow (&obstack, '-');
4668 delete_this_arg = 0;
4671 /* consume suffix */
4672 while (*p == '.' || ISALNUM ((unsigned char) *p))
4674 if (p[0] == '%' && p[1] == 'O')
4679 goto create_temp_file;
4683 /* consume suffix */
4684 while (*p == '.' || ISALNUM ((unsigned char) *p))
4686 if (p[0] == '%' && p[1] == 'O')
4691 goto create_temp_file;
4697 struct temp_name *t;
4699 const char *suffix = p;
4700 char *saved_suffix = NULL;
4702 while (*p == '.' || ISALNUM ((unsigned char) *p))
4704 suffix_length = p - suffix;
4705 if (p[0] == '%' && p[1] == 'O')
4708 /* We don't support extra suffix characters after %O. */
4709 if (*p == '.' || ISALNUM ((unsigned char) *p))
4710 fatal_error ("spec %qs has invalid %<%%0%c%>", spec, *p);
4711 if (suffix_length == 0)
4712 suffix = TARGET_OBJECT_SUFFIX;
4716 = XNEWVEC (char, suffix_length
4717 + strlen (TARGET_OBJECT_SUFFIX));
4718 strncpy (saved_suffix, suffix, suffix_length);
4719 strcpy (saved_suffix + suffix_length,
4720 TARGET_OBJECT_SUFFIX);
4722 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4725 if (compare_debug < 0)
4727 suffix = concat (".gk", suffix, NULL);
4731 /* If -save-temps=obj and -o were specified, use that for the
4733 if (save_temps_length)
4736 temp_filename_length
4737 = save_temps_length + suffix_length + 1;
4738 tmp = (char *) alloca (temp_filename_length);
4739 memcpy (tmp, save_temps_prefix, save_temps_length);
4740 memcpy (tmp + save_temps_length, suffix, suffix_length);
4741 tmp[save_temps_length + suffix_length] = '\0';
4742 temp_filename = save_string (tmp,
4743 temp_filename_length + 1);
4744 obstack_grow (&obstack, temp_filename,
4745 temp_filename_length);
4747 delete_this_arg = 0;
4751 /* If the gcc_input_filename has the same suffix specified
4752 for the %g, %u, or %U, and -save-temps is specified,
4753 we could end up using that file as an intermediate
4754 thus clobbering the user's source file (.e.g.,
4755 gcc -save-temps foo.s would clobber foo.s with the
4756 output of cpp0). So check for this condition and
4757 generate a temp file as the intermediate. */
4759 if (save_temps_flag)
4762 temp_filename_length = basename_length + suffix_length + 1;
4763 tmp = (char *) alloca (temp_filename_length);
4764 memcpy (tmp, input_basename, basename_length);
4765 memcpy (tmp + basename_length, suffix, suffix_length);
4766 tmp[basename_length + suffix_length] = '\0';
4767 temp_filename = tmp;
4769 if (filename_cmp (temp_filename, gcc_input_filename) != 0)
4771 #ifndef HOST_LACKS_INODE_NUMBERS
4772 struct stat st_temp;
4774 /* Note, set_input() resets input_stat_set to 0. */
4775 if (input_stat_set == 0)
4777 input_stat_set = stat (gcc_input_filename,
4779 if (input_stat_set >= 0)
4783 /* If we have the stat for the gcc_input_filename
4784 and we can do the stat for the temp_filename
4785 then the they could still refer to the same
4786 file if st_dev/st_ino's are the same. */
4787 if (input_stat_set != 1
4788 || stat (temp_filename, &st_temp) < 0
4789 || input_stat.st_dev != st_temp.st_dev
4790 || input_stat.st_ino != st_temp.st_ino)
4792 /* Just compare canonical pathnames. */
4793 char* input_realname = lrealpath (gcc_input_filename);
4794 char* temp_realname = lrealpath (temp_filename);
4795 bool files_differ = filename_cmp (input_realname, temp_realname);
4796 free (input_realname);
4797 free (temp_realname);
4801 temp_filename = save_string (temp_filename,
4802 temp_filename_length + 1);
4803 obstack_grow (&obstack, temp_filename,
4804 temp_filename_length);
4806 delete_this_arg = 0;
4812 /* See if we already have an association of %g/%u/%U and
4814 for (t = temp_names; t; t = t->next)
4815 if (t->length == suffix_length
4816 && strncmp (t->suffix, suffix, suffix_length) == 0
4817 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
4820 /* Make a new association if needed. %u and %j
4822 if (t == 0 || c == 'u' || c == 'j')
4826 t = XNEW (struct temp_name);
4827 t->next = temp_names;
4830 t->length = suffix_length;
4833 t->suffix = saved_suffix;
4834 saved_suffix = NULL;
4837 t->suffix = save_string (suffix, suffix_length);
4838 t->unique = (c == 'u' || c == 'U' || c == 'j');
4839 temp_filename = make_temp_file (t->suffix);
4840 temp_filename_length = strlen (temp_filename);
4841 t->filename = temp_filename;
4842 t->filename_length = temp_filename_length;
4845 free (saved_suffix);
4847 obstack_grow (&obstack, t->filename, t->filename_length);
4848 delete_this_arg = 1;
4856 if (at_file_supplied)
4858 /* We are going to expand `%i' to `@FILE', where FILE
4859 is a newly-created temporary filename. The filenames
4860 that would usually be expanded in place of %o will be
4861 written to the temporary file. */
4866 for (i = 0; i < n_infiles; i++)
4867 if (compile_input_file_p (&infiles[i]))
4870 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
4872 /* Copy the strings over. */
4873 for (i = 0, j = 0; i < n_infiles; i++)
4874 if (compile_input_file_p (&infiles[i]))
4876 argv[j] = CONST_CAST (char *, infiles[i].name);
4877 infiles[i].compiled = true;
4882 create_at_file (argv);
4885 for (i = 0; (int) i < n_infiles; i++)
4886 if (compile_input_file_p (&infiles[i]))
4888 store_arg (infiles[i].name, 0, 0);
4889 infiles[i].compiled = true;
4894 obstack_grow (&obstack, gcc_input_filename,
4895 input_filename_length);
4902 struct spec_path_info info;
4906 do_spec_1 ("-imultilib", 1, NULL);
4907 /* Make this a separate argument. */
4908 do_spec_1 (" ", 0, NULL);
4909 do_spec_1 (multilib_dir, 1, NULL);
4910 do_spec_1 (" ", 0, NULL);
4913 if (gcc_exec_prefix)
4915 do_spec_1 ("-iprefix", 1, NULL);
4916 /* Make this a separate argument. */
4917 do_spec_1 (" ", 0, NULL);
4918 do_spec_1 (gcc_exec_prefix, 1, NULL);
4919 do_spec_1 (" ", 0, NULL);
4922 if (target_system_root_changed ||
4923 (target_system_root && target_sysroot_hdrs_suffix))
4925 do_spec_1 ("-isysroot", 1, NULL);
4926 /* Make this a separate argument. */
4927 do_spec_1 (" ", 0, NULL);
4928 do_spec_1 (target_system_root, 1, NULL);
4929 if (target_sysroot_hdrs_suffix)
4930 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
4931 do_spec_1 (" ", 0, NULL);
4934 info.option = "-isystem";
4935 info.append = "include";
4936 info.append_len = strlen (info.append);
4937 info.omit_relative = false;
4938 info.separate_options = true;
4940 for_each_path (&include_prefixes, false, info.append_len,
4943 info.append = "include-fixed";
4944 if (*sysroot_hdrs_suffix_spec)
4945 info.append = concat (info.append, dir_separator_str,
4946 multilib_dir, NULL);
4947 info.append_len = strlen (info.append);
4948 for_each_path (&include_prefixes, false, info.append_len,
4955 int max = n_infiles;
4956 max += lang_specific_extra_outfiles;
4958 if (HAVE_GNU_LD && at_file_supplied)
4960 /* We are going to expand `%o' to `@FILE', where FILE
4961 is a newly-created temporary filename. The filenames
4962 that would usually be expanded in place of %o will be
4963 written to the temporary file. */
4968 /* Convert OUTFILES into a form suitable for writeargv. */
4970 /* Determine how many are non-NULL. */
4971 for (n_files = 0, i = 0; i < max; i++)
4972 n_files += outfiles[i] != NULL;
4974 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
4976 /* Copy the strings over. */
4977 for (i = 0, j = 0; i < max; i++)
4980 argv[j] = CONST_CAST (char *, outfiles[i]);
4985 create_at_file (argv);
4988 for (i = 0; i < max; i++)
4990 store_arg (outfiles[i], 0, 0);
4995 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
5000 this_is_library_file = 1;
5004 this_is_linker_script = 1;
5008 outfiles[input_file_number] = NULL;
5012 this_is_output_file = 1;
5017 unsigned int cur_index = VEC_length (const_char_p, argbuf);
5018 /* Handle the {...} following the %W. */
5020 fatal_error ("spec %qs has invalid %<%%W%c%>", spec, *p);
5021 p = handle_braces (p + 1);
5025 /* If any args were output, mark the last one for deletion
5027 if (VEC_length (const_char_p, argbuf) != cur_index)
5028 record_temp_file (VEC_last (const_char_p, argbuf), 0, 1);
5032 /* %x{OPTION} records OPTION for %X to output. */
5040 /* Skip past the option value and make a copy. */
5042 fatal_error ("spec %qs has invalid %<%%x%c%>", spec, *p);
5045 string = save_string (p1 + 1, p - p1 - 2);
5047 /* See if we already recorded this option. */
5048 FOR_EACH_VEC_ELT (char_p, linker_options, ix, opt)
5049 if (! strcmp (string, opt))
5055 /* This option is new; add it. */
5056 add_linker_option (string, strlen (string));
5060 /* Dump out the options accumulated previously using %x. */
5062 do_specs_vec (linker_options);
5065 /* Dump out the options accumulated previously using -Wa,. */
5067 do_specs_vec (assembler_options);
5070 /* Dump out the options accumulated previously using -Wp,. */
5072 do_specs_vec (preprocessor_options);
5075 /* Here are digits and numbers that just process
5076 a certain constant string as a spec. */
5079 value = do_spec_1 (cc1_spec, 0, NULL);
5085 value = do_spec_1 (cc1plus_spec, 0, NULL);
5091 value = do_spec_1 (asm_spec, 0, NULL);
5097 value = do_spec_1 (asm_final_spec, 0, NULL);
5104 const char *const spec
5105 = (input_file_compiler->cpp_spec
5106 ? input_file_compiler->cpp_spec
5108 value = do_spec_1 (spec, 0, NULL);
5115 value = do_spec_1 (endfile_spec, 0, NULL);
5121 value = do_spec_1 (link_spec, 0, NULL);
5127 value = do_spec_1 (lib_spec, 0, NULL);
5133 value = do_spec_1 (libgcc_spec, 0, NULL);
5139 /* We assume there is a directory
5140 separator at the end of this string. */
5141 if (target_system_root)
5143 obstack_grow (&obstack, target_system_root,
5144 strlen (target_system_root));
5145 if (target_sysroot_suffix)
5146 obstack_grow (&obstack, target_sysroot_suffix,
5147 strlen (target_sysroot_suffix));
5152 value = do_spec_1 (startfile_spec, 0, NULL);
5157 /* Here we define characters other than letters and digits. */
5160 p = handle_braces (p);
5166 p = handle_spec_function (p);
5172 obstack_1grow (&obstack, '%');
5179 while (p[len] && p[len] != ' ' && p[len] != '%')
5181 suffix_subst = save_string (p - 1, len + 1);
5186 /* Henceforth ignore the option(s) matching the pattern
5192 int have_wildcard = 0;
5197 switch_option = SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC;
5199 switch_option = SWITCH_IGNORE;
5201 while (p[len] && p[len] != ' ' && p[len] != '\t')
5204 if (p[len-1] == '*')
5207 for (i = 0; i < n_switches; i++)
5208 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5209 && (have_wildcard || switches[i].part1[len] == '\0'))
5211 switches[i].live_cond |= switch_option;
5212 switches[i].validated = 1;
5220 if (soft_matched_part)
5222 if (soft_matched_part[0])
5223 do_spec_1 (soft_matched_part, 1, NULL);
5224 do_spec_1 (" ", 0, NULL);
5227 /* Catch the case where a spec string contains something like
5228 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5229 hand side of the :. */
5230 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5233 /* Process a string found as the value of a spec given by name.
5234 This feature allows individual machine descriptions
5235 to add and use their own specs. */
5238 const char *name = p;
5239 struct spec_list *sl;
5242 /* The string after the S/P is the name of a spec that is to be
5244 while (*p && *p != ')')
5247 /* See if it's in the list. */
5248 for (len = p - name, sl = specs; sl; sl = sl->next)
5249 if (sl->name_len == len && !strncmp (sl->name, name, len))
5251 name = *(sl->ptr_spec);
5253 fnotice (stderr, "Processing spec (%s), which is '%s'\n",
5261 value = do_spec_1 (name, 0, NULL);
5266 /* Discard the closing paren. */
5273 error ("spec failure: unrecognized spec option %qc", c);
5279 /* Backslash: treat next character as ordinary. */
5284 /* Ordinary character: put it into the current argument. */
5285 obstack_1grow (&obstack, c);
5289 /* End of string. If we are processing a spec function, we need to
5290 end any pending argument. */
5291 if (processing_spec_function)
5297 /* Look up a spec function. */
5299 static const struct spec_function *
5300 lookup_spec_function (const char *name)
5302 const struct spec_function *sf;
5304 for (sf = static_spec_functions; sf->name != NULL; sf++)
5305 if (strcmp (sf->name, name) == 0)
5311 /* Evaluate a spec function. */
5314 eval_spec_function (const char *func, const char *args)
5316 const struct spec_function *sf;
5317 const char *funcval;
5319 /* Saved spec processing context. */
5320 VEC(const_char_p,heap) *save_argbuf;
5323 int save_delete_this_arg;
5324 int save_this_is_output_file;
5325 int save_this_is_library_file;
5326 int save_input_from_pipe;
5327 int save_this_is_linker_script;
5328 const char *save_suffix_subst;
5331 sf = lookup_spec_function (func);
5333 fatal_error ("unknown spec function %qs", func);
5335 /* Push the spec processing context. */
5336 save_argbuf = argbuf;
5338 save_arg_going = arg_going;
5339 save_delete_this_arg = delete_this_arg;
5340 save_this_is_output_file = this_is_output_file;
5341 save_this_is_library_file = this_is_library_file;
5342 save_this_is_linker_script = this_is_linker_script;
5343 save_input_from_pipe = input_from_pipe;
5344 save_suffix_subst = suffix_subst;
5346 /* Create a new spec processing context, and build the function
5350 if (do_spec_2 (args) < 0)
5351 fatal_error ("error in args to spec function %qs", func);
5353 /* argbuf_index is an index for the next argument to be inserted, and
5354 so contains the count of the args already inserted. */
5356 funcval = (*sf->func) (VEC_length (const_char_p, argbuf),
5357 VEC_address (const_char_p, argbuf));
5359 /* Pop the spec processing context. */
5360 VEC_free (const_char_p, heap, argbuf);
5361 argbuf = save_argbuf;
5363 arg_going = save_arg_going;
5364 delete_this_arg = save_delete_this_arg;
5365 this_is_output_file = save_this_is_output_file;
5366 this_is_library_file = save_this_is_library_file;
5367 this_is_linker_script = save_this_is_linker_script;
5368 input_from_pipe = save_input_from_pipe;
5369 suffix_subst = save_suffix_subst;
5374 /* Handle a spec function call of the form:
5378 ARGS is processed as a spec in a separate context and split into an
5379 argument vector in the normal fashion. The function returns a string
5380 containing a spec which we then process in the caller's context, or
5381 NULL if no processing is required. */
5384 handle_spec_function (const char *p)
5387 const char *endp, *funcval;
5390 processing_spec_function++;
5392 /* Get the function name. */
5393 for (endp = p; *endp != '\0'; endp++)
5395 if (*endp == '(') /* ) */
5397 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5398 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5399 fatal_error ("malformed spec function name");
5401 if (*endp != '(') /* ) */
5402 fatal_error ("no arguments for spec function");
5403 func = save_string (p, endp - p);
5406 /* Get the arguments. */
5407 for (count = 0; *endp != '\0'; endp++)
5416 else if (*endp == '(') /* ) */
5421 fatal_error ("malformed spec function arguments");
5422 args = save_string (p, endp - p);
5425 /* p now points to just past the end of the spec function expression. */
5427 funcval = eval_spec_function (func, args);
5428 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5434 processing_spec_function--;
5439 /* Inline subroutine of handle_braces. Returns true if the current
5440 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5442 input_suffix_matches (const char *atom, const char *end_atom)
5444 return (input_suffix
5445 && !strncmp (input_suffix, atom, end_atom - atom)
5446 && input_suffix[end_atom - atom] == '\0');
5449 /* Subroutine of handle_braces. Returns true if the current
5450 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5452 input_spec_matches (const char *atom, const char *end_atom)
5454 return (input_file_compiler
5455 && input_file_compiler->suffix
5456 && input_file_compiler->suffix[0] != '\0'
5457 && !strncmp (input_file_compiler->suffix + 1, atom,
5459 && input_file_compiler->suffix[end_atom - atom + 1] == '\0');
5462 /* Subroutine of handle_braces. Returns true if a switch
5463 matching the atom bracketed by ATOM and END_ATOM appeared on the
5466 switch_matches (const char *atom, const char *end_atom, int starred)
5469 int len = end_atom - atom;
5470 int plen = starred ? len : -1;
5472 for (i = 0; i < n_switches; i++)
5473 if (!strncmp (switches[i].part1, atom, len)
5474 && (starred || switches[i].part1[len] == '\0')
5475 && check_live_switch (i, plen))
5478 /* Check if a switch with separated form matching the atom.
5479 We check -D and -U switches. */
5480 else if (switches[i].args != 0)
5482 if ((*switches[i].part1 == 'D' || *switches[i].part1 == 'U')
5483 && *switches[i].part1 == atom[0])
5485 if (!strncmp (switches[i].args[0], &atom[1], len - 1)
5486 && (starred || (switches[i].part1[1] == '\0'
5487 && switches[i].args[0][len - 1] == '\0'))
5488 && check_live_switch (i, (starred ? 1 : -1)))
5496 /* Inline subroutine of handle_braces. Mark all of the switches which
5497 match ATOM (extends to END_ATOM; STARRED indicates whether there
5498 was a star after the atom) for later processing. */
5500 mark_matching_switches (const char *atom, const char *end_atom, int starred)
5503 int len = end_atom - atom;
5504 int plen = starred ? len : -1;
5506 for (i = 0; i < n_switches; i++)
5507 if (!strncmp (switches[i].part1, atom, len)
5508 && (starred || switches[i].part1[len] == '\0')
5509 && check_live_switch (i, plen))
5510 switches[i].ordering = 1;
5513 /* Inline subroutine of handle_braces. Process all the currently
5514 marked switches through give_switch, and clear the marks. */
5516 process_marked_switches (void)
5520 for (i = 0; i < n_switches; i++)
5521 if (switches[i].ordering == 1)
5523 switches[i].ordering = 0;
5528 /* Handle a %{ ... } construct. P points just inside the leading {.
5529 Returns a pointer one past the end of the brace block, or 0
5530 if we call do_spec_1 and that returns -1. */
5533 handle_braces (const char *p)
5535 const char *atom, *end_atom;
5536 const char *d_atom = NULL, *d_end_atom = NULL;
5537 const char *orig = p;
5545 bool a_must_be_last = false;
5546 bool ordered_set = false;
5547 bool disjunct_set = false;
5548 bool disj_matched = false;
5549 bool disj_starred = true;
5550 bool n_way_choice = false;
5551 bool n_way_matched = false;
5553 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5560 /* Scan one "atom" (S in the description above of %{}, possibly
5561 with '!', '.', '@', ',', or '*' modifiers). */
5563 a_is_suffix = false;
5564 a_is_starred = false;
5565 a_is_negated = false;
5566 a_is_spectype = false;
5570 p++, a_is_negated = true;
5574 p++, a_is_suffix = true;
5576 p++, a_is_spectype = true;
5579 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5580 || *p == ',' || *p == '.' || *p == '@')
5585 p++, a_is_starred = 1;
5591 /* Substitute the switch(es) indicated by the current atom. */
5593 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5594 || a_is_spectype || atom == end_atom)
5597 mark_matching_switches (atom, end_atom, a_is_starred);
5600 process_marked_switches ();
5604 /* Substitute some text if the current atom appears as a switch
5606 disjunct_set = true;
5610 if (atom == end_atom)
5612 if (!n_way_choice || disj_matched || *p == '|'
5613 || a_is_negated || a_is_suffix || a_is_spectype
5617 /* An empty term may appear as the last choice of an
5618 N-way choice set; it means "otherwise". */
5619 a_must_be_last = true;
5620 disj_matched = !n_way_matched;
5621 disj_starred = false;
5625 if ((a_is_suffix || a_is_spectype) && a_is_starred)
5629 disj_starred = false;
5631 /* Don't bother testing this atom if we already have a
5633 if (!disj_matched && !n_way_matched)
5636 a_matched = input_suffix_matches (atom, end_atom);
5637 else if (a_is_spectype)
5638 a_matched = input_spec_matches (atom, end_atom);
5640 a_matched = switch_matches (atom, end_atom, a_is_starred);
5642 if (a_matched != a_is_negated)
5644 disj_matched = true;
5646 d_end_atom = end_atom;
5653 /* Found the body, that is, the text to substitute if the
5654 current disjunction matches. */
5655 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5656 disj_matched && !n_way_matched);
5660 /* If we have an N-way choice, reset state for the next
5664 n_way_choice = true;
5665 n_way_matched |= disj_matched;
5666 disj_matched = false;
5667 disj_starred = true;
5668 d_atom = d_end_atom = NULL;
5677 while (*p++ != '}');
5682 fatal_error ("braced spec %qs is invalid at %qc", orig, *p);
5687 /* Subroutine of handle_braces. Scan and process a brace substitution body
5688 (X in the description of %{} syntax). P points one past the colon;
5689 ATOM and END_ATOM bracket the first atom which was found to be true
5690 (present) in the current disjunction; STARRED indicates whether all
5691 the atoms in the current disjunction were starred (for syntax validation);
5692 MATCHED indicates whether the disjunction matched or not, and therefore
5693 whether or not the body is to be processed through do_spec_1 or just
5694 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5698 process_brace_body (const char *p, const char *atom, const char *end_atom,
5699 int starred, int matched)
5701 const char *body, *end_body;
5702 unsigned int nesting_level;
5703 bool have_subst = false;
5705 /* Locate the closing } or ;, honoring nested braces.
5706 Trim trailing whitespace. */
5715 if (!--nesting_level)
5718 else if (*p == ';' && nesting_level == 1)
5720 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
5722 else if (*p == '\0')
5728 while (end_body[-1] == ' ' || end_body[-1] == '\t')
5731 if (have_subst && !starred)
5736 /* Copy the substitution body to permanent storage and execute it.
5737 If have_subst is false, this is a simple matter of running the
5738 body through do_spec_1... */
5739 char *string = save_string (body, end_body - body);
5742 if (do_spec_1 (string, 0, NULL) < 0)
5747 /* ... but if have_subst is true, we have to process the
5748 body once for each matching switch, with %* set to the
5749 variant part of the switch. */
5750 unsigned int hard_match_len = end_atom - atom;
5753 for (i = 0; i < n_switches; i++)
5754 if (!strncmp (switches[i].part1, atom, hard_match_len)
5755 && check_live_switch (i, hard_match_len))
5757 if (do_spec_1 (string, 0,
5758 &switches[i].part1[hard_match_len]) < 0)
5760 /* Pass any arguments this switch has. */
5762 suffix_subst = NULL;
5770 fatal_error ("braced spec body %qs is invalid", body);
5773 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5774 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5775 spec, or -1 if either exact match or %* is used.
5777 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5778 whose value does not begin with "no-" is obsoleted by the same value
5779 with the "no-", similarly for a switch with the "no-" prefix. */
5782 check_live_switch (int switchnum, int prefix_length)
5784 const char *name = switches[switchnum].part1;
5787 /* If we already processed this switch and determined if it was
5788 live or not, return our past determination. */
5789 if (switches[switchnum].live_cond != 0)
5790 return ((switches[switchnum].live_cond & SWITCH_LIVE) != 0
5791 && (switches[switchnum].live_cond & SWITCH_FALSE) == 0
5792 && (switches[switchnum].live_cond & SWITCH_IGNORE_PERMANENTLY)
5795 /* In the common case of {<at-most-one-letter>*}, a negating
5796 switch would always match, so ignore that case. We will just
5797 send the conflicting switches to the compiler phase. */
5798 if (prefix_length >= 0 && prefix_length <= 1)
5801 /* Now search for duplicate in a manner that depends on the name. */
5805 for (i = switchnum + 1; i < n_switches; i++)
5806 if (switches[i].part1[0] == 'O')
5808 switches[switchnum].validated = 1;
5809 switches[switchnum].live_cond = SWITCH_FALSE;
5814 case 'W': case 'f': case 'm':
5815 if (! strncmp (name + 1, "no-", 3))
5817 /* We have Xno-YYY, search for XYYY. */
5818 for (i = switchnum + 1; i < n_switches; i++)
5819 if (switches[i].part1[0] == name[0]
5820 && ! strcmp (&switches[i].part1[1], &name[4]))
5822 switches[switchnum].validated = 1;
5823 switches[switchnum].live_cond = SWITCH_FALSE;
5829 /* We have XYYY, search for Xno-YYY. */
5830 for (i = switchnum + 1; i < n_switches; i++)
5831 if (switches[i].part1[0] == name[0]
5832 && switches[i].part1[1] == 'n'
5833 && switches[i].part1[2] == 'o'
5834 && switches[i].part1[3] == '-'
5835 && !strcmp (&switches[i].part1[4], &name[1]))
5837 switches[switchnum].validated = 1;
5838 switches[switchnum].live_cond = SWITCH_FALSE;
5845 /* Otherwise the switch is live. */
5846 switches[switchnum].live_cond |= SWITCH_LIVE;
5850 /* Pass a switch to the current accumulating command
5851 in the same form that we received it.
5852 SWITCHNUM identifies the switch; it is an index into
5853 the vector of switches gcc received, which is `switches'.
5854 This cannot fail since it never finishes a command line.
5856 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5859 give_switch (int switchnum, int omit_first_word)
5861 if ((switches[switchnum].live_cond & SWITCH_IGNORE) != 0)
5864 if (!omit_first_word)
5866 do_spec_1 ("-", 0, NULL);
5867 do_spec_1 (switches[switchnum].part1, 1, NULL);
5870 if (switches[switchnum].args != 0)
5873 for (p = switches[switchnum].args; *p; p++)
5875 const char *arg = *p;
5877 do_spec_1 (" ", 0, NULL);
5880 unsigned length = strlen (arg);
5883 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5884 if (arg[length] == '.')
5886 (CONST_CAST(char *, arg))[length] = 0;
5890 do_spec_1 (arg, 1, NULL);
5892 (CONST_CAST(char *, arg))[length] = '.';
5893 do_spec_1 (suffix_subst, 1, NULL);
5896 do_spec_1 (arg, 1, NULL);
5900 do_spec_1 (" ", 0, NULL);
5901 switches[switchnum].validated = 1;
5904 /* Search for a file named NAME trying various prefixes including the
5905 user's -B prefix and some standard ones.
5906 Return the absolute file name found. If nothing is found, return NAME. */
5909 find_file (const char *name)
5911 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true);
5912 return newname ? newname : name;
5915 /* Determine whether a directory exists. If LINKER, return 0 for
5916 certain fixed names not needed by the linker. */
5919 is_directory (const char *path1, bool linker)
5926 /* Ensure the string ends with "/.". The resulting path will be a
5927 directory even if the given path is a symbolic link. */
5928 len1 = strlen (path1);
5929 path = (char *) alloca (3 + len1);
5930 memcpy (path, path1, len1);
5932 if (!IS_DIR_SEPARATOR (cp[-1]))
5933 *cp++ = DIR_SEPARATOR;
5937 /* Exclude directories that the linker is known to search. */
5939 && IS_DIR_SEPARATOR (path[0])
5941 && filename_ncmp (path + 1, "lib", 3) == 0)
5943 && filename_ncmp (path + 1, "usr", 3) == 0
5944 && IS_DIR_SEPARATOR (path[4])
5945 && filename_ncmp (path + 5, "lib", 3) == 0)))
5948 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5951 /* Set up the various global variables to indicate that we're processing
5952 the input file named FILENAME. */
5955 set_input (const char *filename)
5959 gcc_input_filename = filename;
5960 input_filename_length = strlen (gcc_input_filename);
5961 input_basename = lbasename (gcc_input_filename);
5963 /* Find a suffix starting with the last period,
5964 and set basename_length to exclude that suffix. */
5965 basename_length = strlen (input_basename);
5966 suffixed_basename_length = basename_length;
5967 p = input_basename + basename_length;
5968 while (p != input_basename && *p != '.')
5970 if (*p == '.' && p != input_basename)
5972 basename_length = p - input_basename;
5973 input_suffix = p + 1;
5978 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5979 we will need to do a stat on the gcc_input_filename. The
5980 INPUT_STAT_SET signals that the stat is needed. */
5984 /* On fatal signals, delete all the temporary files. */
5987 fatal_signal (int signum)
5989 signal (signum, SIG_DFL);
5990 delete_failure_queue ();
5991 delete_temp_files ();
5992 /* Get the same signal again, this time not handled,
5993 so its normal effect occurs. */
5994 kill (getpid (), signum);
5997 /* Compare the contents of the two files named CMPFILE[0] and
5998 CMPFILE[1]. Return zero if they're identical, nonzero
6002 compare_files (char *cmpfile[])
6005 FILE *temp[2] = { NULL, NULL };
6011 void *map[2] = { NULL, NULL };
6013 for (i = 0; i < 2; i++)
6017 if (stat (cmpfile[i], &st) < 0 || !S_ISREG (st.st_mode))
6019 error ("%s: could not determine length of compare-debug file %s",
6020 gcc_input_filename, cmpfile[i]);
6025 length[i] = st.st_size;
6028 if (!ret && length[0] != length[1])
6030 error ("%s: -fcompare-debug failure (length)", gcc_input_filename);
6035 for (i = 0; i < 2; i++)
6037 int fd = open (cmpfile[i], O_RDONLY);
6040 error ("%s: could not open compare-debug file %s",
6041 gcc_input_filename, cmpfile[i]);
6046 map[i] = mmap (NULL, length[i], PROT_READ, MAP_PRIVATE, fd, 0);
6049 if (map[i] == (void *) MAP_FAILED)
6058 if (memcmp (map[0], map[1], length[0]) != 0)
6060 error ("%s: -fcompare-debug failure", gcc_input_filename);
6065 for (i = 0; i < 2; i++)
6067 munmap ((caddr_t) map[i], length[i]);
6076 for (i = 0; i < 2; i++)
6078 temp[i] = fopen (cmpfile[i], "r");
6081 error ("%s: could not open compare-debug file %s",
6082 gcc_input_filename, cmpfile[i]);
6088 if (!ret && temp[0] && temp[1])
6092 c0 = fgetc (temp[0]);
6093 c1 = fgetc (temp[1]);
6097 error ("%s: -fcompare-debug failure",
6098 gcc_input_filename);
6107 for (i = 1; i >= 0; i--)
6116 extern int main (int, char **);
6119 main (int argc, char **argv)
6123 int linker_was_run = 0;
6124 int lang_n_infiles = 0;
6125 int num_linker_inputs = 0;
6126 char *explicit_link_files;
6128 char *lto_wrapper_file;
6130 struct user_specs *uptr;
6131 char **old_argv = argv;
6132 struct cl_decoded_option *decoded_options;
6133 unsigned int decoded_options_count;
6135 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
6136 on ?: in file-scope variable initializations. */
6137 asm_debug = ASM_DEBUG_SPEC;
6139 p = argv[0] + strlen (argv[0]);
6140 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
6144 xmalloc_set_program_name (progname);
6146 expandargv (&argc, &argv);
6148 /* Determine if any expansions were made. */
6149 if (argv != old_argv)
6150 at_file_supplied = true;
6152 /* Register the language-independent parameters. */
6153 global_init_params ();
6156 init_options_struct (&global_options, &global_options_set);
6158 decode_cmdline_options_to_array (argc, CONST_CAST2 (const char **, char **,
6161 &decoded_options, &decoded_options_count);
6163 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6164 /* Perform host dependent initialization when needed. */
6165 GCC_DRIVER_HOST_INITIALIZATION;
6168 /* Unlock the stdio streams. */
6169 unlock_std_streams ();
6171 gcc_init_libintl ();
6173 diagnostic_initialize (global_dc, 0);
6174 if (atexit (delete_temp_files) != 0)
6175 fatal_error ("atexit failed");
6177 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
6178 signal (SIGINT, fatal_signal);
6180 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
6181 signal (SIGHUP, fatal_signal);
6183 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
6184 signal (SIGTERM, fatal_signal);
6186 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
6187 signal (SIGPIPE, fatal_signal);
6190 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6191 receive the signal. A different setting is inheritable */
6192 signal (SIGCHLD, SIG_DFL);
6195 /* Parsing and gimplification sometimes need quite large stack.
6196 Increase stack size limits if possible. */
6197 stack_limit_increase (64 * 1024 * 1024);
6199 /* Allocate the argument vector. */
6202 obstack_init (&obstack);
6204 /* Build multilib_select, et. al from the separate lines that make up each
6205 multilib selection. */
6207 const char *const *q = multilib_raw;
6210 obstack_init (&multilib_obstack);
6211 while ((p = *q++) != (char *) 0)
6212 obstack_grow (&multilib_obstack, p, strlen (p));
6214 obstack_1grow (&multilib_obstack, 0);
6215 multilib_select = XOBFINISH (&multilib_obstack, const char *);
6217 q = multilib_matches_raw;
6218 while ((p = *q++) != (char *) 0)
6219 obstack_grow (&multilib_obstack, p, strlen (p));
6221 obstack_1grow (&multilib_obstack, 0);
6222 multilib_matches = XOBFINISH (&multilib_obstack, const char *);
6224 q = multilib_exclusions_raw;
6225 while ((p = *q++) != (char *) 0)
6226 obstack_grow (&multilib_obstack, p, strlen (p));
6228 obstack_1grow (&multilib_obstack, 0);
6229 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *);
6232 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
6235 obstack_1grow (&multilib_obstack, ' ');
6236 obstack_grow (&multilib_obstack,
6237 multilib_defaults_raw[i],
6238 strlen (multilib_defaults_raw[i]));
6242 obstack_1grow (&multilib_obstack, 0);
6243 multilib_defaults = XOBFINISH (&multilib_obstack, const char *);
6246 #ifdef INIT_ENVIRONMENT
6247 /* Set up any other necessary machine specific environment variables. */
6248 xputenv (INIT_ENVIRONMENT);
6251 /* Make a table of what switches there are (switches, n_switches).
6252 Make a table of specified input files (infiles, n_infiles).
6253 Decode switches that are handled locally. */
6255 process_command (decoded_options_count, decoded_options);
6257 /* Initialize the vector of specs to just the default.
6258 This means one element containing 0s, as a terminator. */
6260 compilers = XNEWVAR (struct compiler, sizeof default_compilers);
6261 memcpy (compilers, default_compilers, sizeof default_compilers);
6262 n_compilers = n_default_compilers;
6264 /* Read specs from a file if there is one. */
6266 machine_suffix = concat (spec_machine, dir_separator_str,
6267 spec_version, dir_separator_str, NULL);
6268 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6270 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true);
6271 /* Read the specs file unless it is a default one. */
6272 if (specs_file != 0 && strcmp (specs_file, "specs"))
6273 read_specs (specs_file, TRUE);
6277 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6278 for any override of as, ld and libraries. */
6279 specs_file = (char *) alloca (strlen (standard_exec_prefix)
6280 + strlen (just_machine_suffix) + sizeof ("specs"));
6282 strcpy (specs_file, standard_exec_prefix);
6283 strcat (specs_file, just_machine_suffix);
6284 strcat (specs_file, "specs");
6285 if (access (specs_file, R_OK) == 0)
6286 read_specs (specs_file, TRUE);
6288 /* Process any configure-time defaults specified for the command line
6289 options, via OPTION_DEFAULT_SPECS. */
6290 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6291 do_option_spec (option_default_specs[i].name,
6292 option_default_specs[i].spec);
6294 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6295 of the command line. */
6297 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6298 do_self_spec (driver_self_specs[i]);
6300 /* If not cross-compiling, look for executables in the standard
6302 if (*cross_compile == '0')
6304 if (*md_exec_prefix)
6306 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6307 PREFIX_PRIORITY_LAST, 0, 0);
6311 /* Process sysroot_suffix_spec. */
6312 if (*sysroot_suffix_spec != 0
6313 && do_spec_2 (sysroot_suffix_spec) == 0)
6315 if (VEC_length (const_char_p, argbuf) > 1)
6316 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6317 else if (VEC_length (const_char_p, argbuf) == 1)
6318 target_sysroot_suffix = xstrdup (VEC_last (const_char_p, argbuf));
6321 #ifdef HAVE_LD_SYSROOT
6322 /* Pass the --sysroot option to the linker, if it supports that. If
6323 there is a sysroot_suffix_spec, it has already been processed by
6324 this point, so target_system_root really is the system root we
6326 if (target_system_root)
6328 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6329 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
6330 set_spec ("link", XOBFINISH (&obstack, const char *));
6334 /* Process sysroot_hdrs_suffix_spec. */
6335 if (*sysroot_hdrs_suffix_spec != 0
6336 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6338 if (VEC_length (const_char_p, argbuf) > 1)
6339 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6340 else if (VEC_length (const_char_p, argbuf) == 1)
6341 target_sysroot_hdrs_suffix = xstrdup (VEC_last (const_char_p, argbuf));
6344 /* Look for startfiles in the standard places. */
6345 if (*startfile_prefix_spec != 0
6346 && do_spec_2 (startfile_prefix_spec) == 0
6347 && do_spec_1 (" ", 0, NULL) == 0)
6351 FOR_EACH_VEC_ELT (const_char_p, argbuf, ndx, arg)
6352 add_sysrooted_prefix (&startfile_prefixes, arg, "BINUTILS",
6353 PREFIX_PRIORITY_LAST, 0, 1);
6355 /* We should eventually get rid of all these and stick to
6356 startfile_prefix_spec exclusively. */
6357 else if (*cross_compile == '0' || target_system_root)
6359 if (*md_startfile_prefix)
6360 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6361 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6363 if (*md_startfile_prefix_1)
6364 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6365 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6367 /* If standard_startfile_prefix is relative, base it on
6368 standard_exec_prefix. This lets us move the installed tree
6369 as a unit. If GCC_EXEC_PREFIX is defined, base
6370 standard_startfile_prefix on that as well.
6372 If the prefix is relative, only search it for native compilers;
6373 otherwise we will search a directory containing host libraries. */
6374 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
6375 add_sysrooted_prefix (&startfile_prefixes,
6376 standard_startfile_prefix, "BINUTILS",
6377 PREFIX_PRIORITY_LAST, 0, 1);
6378 else if (*cross_compile == '0')
6380 add_prefix (&startfile_prefixes,
6381 concat (gcc_exec_prefix
6382 ? gcc_exec_prefix : standard_exec_prefix,
6384 standard_startfile_prefix, NULL),
6385 NULL, PREFIX_PRIORITY_LAST, 0, 1);
6388 /* Sysrooted prefixes are relocated because target_system_root is
6389 also relocated by gcc_exec_prefix. */
6390 if (*standard_startfile_prefix_1)
6391 add_sysrooted_prefix (&startfile_prefixes,
6392 standard_startfile_prefix_1, "BINUTILS",
6393 PREFIX_PRIORITY_LAST, 0, 1);
6394 if (*standard_startfile_prefix_2)
6395 add_sysrooted_prefix (&startfile_prefixes,
6396 standard_startfile_prefix_2, "BINUTILS",
6397 PREFIX_PRIORITY_LAST, 0, 1);
6400 /* Process any user specified specs in the order given on the command
6402 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6404 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6406 read_specs (filename ? filename : uptr->filename, FALSE);
6409 /* Process any user self specs. */
6411 struct spec_list *sl;
6412 for (sl = specs; sl; sl = sl->next)
6413 if (sl->name_len == sizeof "self_spec" - 1
6414 && !strcmp (sl->name, "self_spec"))
6415 do_self_spec (*sl->ptr_spec);
6420 enum save_temps save;
6422 if (!compare_debug_second)
6424 n_switches_debug_check[1] = n_switches;
6425 n_switches_alloc_debug_check[1] = n_switches_alloc;
6426 switches_debug_check[1] = XDUPVEC (struct switchstr, switches,
6429 do_self_spec ("%:compare-debug-self-opt()");
6430 n_switches_debug_check[0] = n_switches;
6431 n_switches_alloc_debug_check[0] = n_switches_alloc;
6432 switches_debug_check[0] = switches;
6434 n_switches = n_switches_debug_check[1];
6435 n_switches_alloc = n_switches_alloc_debug_check[1];
6436 switches = switches_debug_check[1];
6439 /* Avoid crash when computing %j in this early. */
6440 save = save_temps_flag;
6441 save_temps_flag = SAVE_TEMPS_NONE;
6443 compare_debug = -compare_debug;
6444 do_self_spec ("%:compare-debug-self-opt()");
6446 save_temps_flag = save;
6448 if (!compare_debug_second)
6450 n_switches_debug_check[1] = n_switches;
6451 n_switches_alloc_debug_check[1] = n_switches_alloc;
6452 switches_debug_check[1] = switches;
6453 compare_debug = -compare_debug;
6454 n_switches = n_switches_debug_check[0];
6455 n_switches_alloc = n_switches_debug_check[0];
6456 switches = switches_debug_check[0];
6461 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6462 if (gcc_exec_prefix)
6463 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6464 spec_version, dir_separator_str, NULL);
6466 /* Now we have the specs.
6467 Set the `valid' bits for switches that match anything in any spec. */
6469 validate_all_switches ();
6471 /* Now that we have the switches and the specs, set
6472 the subdirectory based on the options. */
6473 set_multilib_dir ();
6475 /* Set up to remember the pathname of gcc and any options
6476 needed for collect. We use argv[0] instead of progname because
6477 we need the complete pathname. */
6478 obstack_init (&collect_obstack);
6479 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6480 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6481 xputenv (XOBFINISH (&collect_obstack, char *));
6483 /* Set up to remember the pathname of the lto wrapper. */
6486 lto_wrapper_file = NULL;
6488 lto_wrapper_file = find_a_file (&exec_prefixes, "lto-wrapper",
6490 if (lto_wrapper_file)
6492 lto_wrapper_spec = lto_wrapper_file;
6493 obstack_init (&collect_obstack);
6494 obstack_grow (&collect_obstack, "COLLECT_LTO_WRAPPER=",
6495 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
6496 obstack_grow (&collect_obstack, lto_wrapper_spec,
6497 strlen (lto_wrapper_spec) + 1);
6498 xputenv (XOBFINISH (&collect_obstack, char *));
6501 /* Warn about any switches that no pass was interested in. */
6503 for (i = 0; (int) i < n_switches; i++)
6504 if (! switches[i].validated)
6505 error ("unrecognized option %<-%s%>", switches[i].part1);
6507 /* Obey some of the options. */
6509 if (print_search_dirs)
6511 printf (_("install: %s\n"), STD_EXEC_PATH);
6512 printf (_("programs: %s\n"),
6513 build_search_list (&exec_prefixes, "", false, false));
6514 printf (_("libraries: %s\n"),
6515 build_search_list (&startfile_prefixes, "", false, true));
6519 if (print_file_name)
6521 printf ("%s\n", find_file (print_file_name));
6525 if (print_prog_name)
6527 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6528 printf ("%s\n", (newname ? newname : print_prog_name));
6532 if (print_multi_lib)
6534 print_multilib_info ();
6538 if (print_multi_directory)
6540 if (multilib_dir == NULL)
6543 printf ("%s\n", multilib_dir);
6549 if (target_system_root)
6551 if (target_sysroot_suffix)
6552 printf ("%s%s\n", target_system_root, target_sysroot_suffix);
6554 printf ("%s\n", target_system_root);
6559 if (print_multi_os_directory)
6561 if (multilib_os_dir == NULL)
6564 printf ("%s\n", multilib_os_dir);
6568 if (print_sysroot_headers_suffix)
6570 if (*sysroot_hdrs_suffix_spec)
6572 printf("%s\n", (target_sysroot_hdrs_suffix
6573 ? target_sysroot_hdrs_suffix
6578 /* The error status indicates that only one set of fixed
6579 headers should be built. */
6580 fatal_error ("not configured with sysroot headers suffix");
6583 if (print_help_list)
6589 printf (_("\nFor bug reporting instructions, please see:\n"));
6590 printf ("%s.\n", bug_report_url);
6595 /* We do not exit here. Instead we have created a fake input file
6596 called 'help-dummy' which needs to be compiled, and we pass this
6597 on the various sub-processes, along with the --help switch.
6598 Ensure their output appears after ours. */
6599 fputc ('\n', stdout);
6605 printf (_("%s %s%s\n"), progname, pkgversion_string,
6607 printf ("Copyright %s 2012 Free Software Foundation, Inc.\n",
6609 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
6610 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
6615 /* We do not exit here. We use the same mechanism of --help to print
6616 the version of the sub-processes. */
6617 fputc ('\n', stdout);
6626 fnotice (stderr, "Target: %s\n", spec_machine);
6627 fnotice (stderr, "Configured with: %s\n", configuration_arguments);
6629 #ifdef THREAD_MODEL_SPEC
6630 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6631 but there's no point in doing all this processing just to get
6632 thread_model back. */
6633 obstack_init (&obstack);
6634 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6635 obstack_1grow (&obstack, '\0');
6636 thrmod = XOBFINISH (&obstack, const char *);
6638 thrmod = thread_model;
6641 fnotice (stderr, "Thread model: %s\n", thrmod);
6643 /* compiler_version is truncated at the first space when initialized
6644 from version string, so truncate version_string at the first space
6645 before comparing. */
6646 for (n = 0; version_string[n]; n++)
6647 if (version_string[n] == ' ')
6650 if (! strncmp (version_string, compiler_version, n)
6651 && compiler_version[n] == 0)
6652 fnotice (stderr, "gcc version %s %s\n", version_string,
6655 fnotice (stderr, "gcc driver version %s %sexecuting gcc version %s\n",
6656 version_string, pkgversion_string, compiler_version);
6662 if (n_infiles == added_libraries)
6663 fatal_error ("no input files");
6668 /* Make a place to record the compiler output file names
6669 that correspond to the input files. */
6672 i += lang_specific_extra_outfiles;
6673 outfiles = XCNEWVEC (const char *, i);
6675 /* Record which files were specified explicitly as link input. */
6677 explicit_link_files = XCNEWVEC (char, n_infiles);
6679 combine_inputs = have_o || flag_wpa;
6681 for (i = 0; (int) i < n_infiles; i++)
6683 const char *name = infiles[i].name;
6684 struct compiler *compiler = lookup_compiler (name,
6686 infiles[i].language);
6688 if (compiler && !(compiler->combinable))
6689 combine_inputs = false;
6691 if (lang_n_infiles > 0 && compiler != input_file_compiler
6692 && infiles[i].language && infiles[i].language[0] != '*')
6693 infiles[i].incompiler = compiler;
6697 input_file_compiler = compiler;
6698 infiles[i].incompiler = compiler;
6702 /* Since there is no compiler for this input file, assume it is a
6704 explicit_link_files[i] = 1;
6705 infiles[i].incompiler = NULL;
6707 infiles[i].compiled = false;
6708 infiles[i].preprocessed = false;
6711 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1)
6712 fatal_error ("cannot specify -o with -c, -S or -E with multiple files");
6714 for (i = 0; (int) i < n_infiles; i++)
6716 int this_file_error = 0;
6718 /* Tell do_spec what to substitute for %i. */
6720 input_file_number = i;
6721 set_input (infiles[i].name);
6723 if (infiles[i].compiled)
6726 /* Use the same thing in %o, unless cp->spec says otherwise. */
6728 outfiles[i] = gcc_input_filename;
6730 /* Figure out which compiler from the file's suffix. */
6733 = lookup_compiler (infiles[i].name, input_filename_length,
6734 infiles[i].language);
6736 if (input_file_compiler)
6738 /* Ok, we found an applicable compiler. Run its spec. */
6740 if (input_file_compiler->spec[0] == '#')
6742 error ("%s: %s compiler not installed on this system",
6743 gcc_input_filename, &input_file_compiler->spec[1]);
6744 this_file_error = 1;
6750 free (debug_check_temp_file[0]);
6751 debug_check_temp_file[0] = NULL;
6753 free (debug_check_temp_file[1]);
6754 debug_check_temp_file[1] = NULL;
6757 value = do_spec (input_file_compiler->spec);
6758 infiles[i].compiled = true;
6760 this_file_error = 1;
6761 else if (compare_debug && debug_check_temp_file[0])
6764 inform (0, "recompiling with -fcompare-debug");
6766 compare_debug = -compare_debug;
6767 n_switches = n_switches_debug_check[1];
6768 n_switches_alloc = n_switches_alloc_debug_check[1];
6769 switches = switches_debug_check[1];
6771 value = do_spec (input_file_compiler->spec);
6773 compare_debug = -compare_debug;
6774 n_switches = n_switches_debug_check[0];
6775 n_switches_alloc = n_switches_alloc_debug_check[0];
6776 switches = switches_debug_check[0];
6780 error ("during -fcompare-debug recompilation");
6781 this_file_error = 1;
6784 gcc_assert (debug_check_temp_file[1]
6785 && filename_cmp (debug_check_temp_file[0],
6786 debug_check_temp_file[1]));
6789 inform (0, "comparing final insns dumps");
6791 if (compare_files (debug_check_temp_file))
6792 this_file_error = 1;
6797 free (debug_check_temp_file[0]);
6798 debug_check_temp_file[0] = NULL;
6800 free (debug_check_temp_file[1]);
6801 debug_check_temp_file[1] = NULL;
6806 /* If this file's name does not contain a recognized suffix,
6807 record it as explicit linker input. */
6810 explicit_link_files[i] = 1;
6812 /* Clear the delete-on-failure queue, deleting the files in it
6813 if this compilation failed. */
6815 if (this_file_error)
6817 delete_failure_queue ();
6820 /* If this compilation succeeded, don't delete those files later. */
6821 clear_failure_queue ();
6824 /* Reset the input file name to the first compile/object file name, for use
6825 with %b in LINK_SPEC. We use the first input file that we can find
6826 a compiler to compile it instead of using infiles.language since for
6827 languages other than C we use aliases that we then lookup later. */
6832 for (i = 0; i < n_infiles ; i++)
6833 if (infiles[i].incompiler
6834 || (infiles[i].language && infiles[i].language[0] != '*'))
6836 set_input (infiles[i].name);
6843 /* Make sure INPUT_FILE_NUMBER points to first available open
6845 input_file_number = n_infiles;
6846 if (lang_specific_pre_link ())
6850 /* Determine if there are any linker input files. */
6851 num_linker_inputs = 0;
6852 for (i = 0; (int) i < n_infiles; i++)
6853 if (explicit_link_files[i] || outfiles[i] != NULL)
6854 num_linker_inputs++;
6856 /* Run ld to link all the compiler output files. */
6858 if (num_linker_inputs > 0 && !seen_error () && print_subprocess_help < 2)
6860 int tmp = execution_count;
6864 #if HAVE_LTO_PLUGIN > 0
6865 #if HAVE_LTO_PLUGIN == 2
6866 const char *fno_use_linker_plugin = "fno-use-linker-plugin";
6868 const char *fuse_linker_plugin = "fuse-linker-plugin";
6872 /* We'll use ld if we can't find collect2. */
6873 if (! strcmp (linker_name_spec, "collect2"))
6875 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false);
6877 linker_name_spec = "ld";
6880 #if HAVE_LTO_PLUGIN > 0
6881 #if HAVE_LTO_PLUGIN == 2
6882 if (!switch_matches (fno_use_linker_plugin,
6883 fno_use_linker_plugin
6884 + strlen (fno_use_linker_plugin), 0))
6886 if (switch_matches (fuse_linker_plugin,
6888 + strlen (fuse_linker_plugin), 0))
6891 linker_plugin_file_spec = find_a_file (&exec_prefixes,
6892 LTOPLUGINSONAME, R_OK,
6894 if (!linker_plugin_file_spec)
6895 fatal_error ("-fuse-linker-plugin, but %s not found",
6899 lto_gcc_spec = argv[0];
6902 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6904 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false);
6905 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true);
6907 if (print_subprocess_help == 1)
6909 printf (_("\nLinker options\n==============\n\n"));
6910 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
6911 " to the linker.\n\n"));
6914 value = do_spec (link_command_spec);
6917 linker_was_run = (tmp != execution_count);
6920 /* If options said don't run linker,
6921 complain about input files to be given to the linker. */
6923 if (! linker_was_run && !seen_error ())
6924 for (i = 0; (int) i < n_infiles; i++)
6925 if (explicit_link_files[i]
6926 && !(infiles[i].language && infiles[i].language[0] == '*'))
6927 warning (0, "%s: linker input file unused because linking not done",
6930 /* Delete some or all of the temporary files we made. */
6933 delete_failure_queue ();
6934 delete_temp_files ();
6936 if (print_help_list)
6938 printf (("\nFor bug reporting instructions, please see:\n"));
6939 printf ("%s\n", bug_report_url);
6943 return (signal_count != 0 ? 2
6944 : seen_error () ? (pass_exit_codes ? greatest_status : 1)
6948 /* Find the proper compilation spec for the file name NAME,
6949 whose length is LENGTH. LANGUAGE is the specified language,
6950 or 0 if this file is to be passed to the linker. */
6952 static struct compiler *
6953 lookup_compiler (const char *name, size_t length, const char *language)
6955 struct compiler *cp;
6957 /* If this was specified by the user to be a linker input, indicate that. */
6958 if (language != 0 && language[0] == '*')
6961 /* Otherwise, look for the language, if one is spec'd. */
6964 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6965 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6968 error ("language %s not recognized", language);
6972 /* Look for a suffix. */
6973 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6975 if (/* The suffix `-' matches only the file name `-'. */
6976 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6977 || (strlen (cp->suffix) < length
6978 /* See if the suffix matches the end of NAME. */
6979 && !strcmp (cp->suffix,
6980 name + length - strlen (cp->suffix))
6985 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6986 /* Look again, but case-insensitively this time. */
6988 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6990 if (/* The suffix `-' matches only the file name `-'. */
6991 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6992 || (strlen (cp->suffix) < length
6993 /* See if the suffix matches the end of NAME. */
6994 && ((!strcmp (cp->suffix,
6995 name + length - strlen (cp->suffix))
6996 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6997 && !strcasecmp (cp->suffix,
6998 name + length - strlen (cp->suffix)))
7004 if (cp >= compilers)
7006 if (cp->spec[0] != '@')
7007 /* A non-alias entry: return it. */
7010 /* An alias entry maps a suffix to a language.
7011 Search for the language; pass 0 for NAME and LENGTH
7012 to avoid infinite recursion if language not found. */
7013 return lookup_compiler (NULL, 0, cp->spec + 1);
7019 save_string (const char *s, int len)
7021 char *result = XNEWVEC (char, len + 1);
7023 memcpy (result, s, len);
7029 pfatal_with_name (const char *name)
7031 perror_with_name (name);
7032 delete_temp_files ();
7037 perror_with_name (const char *name)
7039 error ("%s: %m", name);
7043 validate_switches_from_spec (const char *spec)
7045 const char *p = spec;
7048 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
7049 /* We have a switch spec. */
7050 p = validate_switches (p + 1);
7054 validate_all_switches (void)
7056 struct compiler *comp;
7057 struct spec_list *spec;
7059 for (comp = compilers; comp->spec; comp++)
7060 validate_switches_from_spec (comp->spec);
7062 /* Look through the linked list of specs read from the specs file. */
7063 for (spec = specs; spec; spec = spec->next)
7064 validate_switches_from_spec (*spec->ptr_spec);
7066 validate_switches_from_spec (link_command_spec);
7069 /* Look at the switch-name that comes after START
7070 and mark as valid all supplied switches that match it. */
7073 validate_switches (const char *start)
7075 const char *p = start;
7079 bool suffix = false;
7080 bool starred = false;
7082 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7091 if (*p == '.' || *p == ',')
7095 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
7096 || *p == ',' || *p == '.' || *p == '@')
7101 starred = true, p++;
7107 /* Mark all matching switches as valid. */
7108 for (i = 0; i < n_switches; i++)
7109 if (!strncmp (switches[i].part1, atom, len)
7110 && (starred || switches[i].part1[len] == 0))
7111 switches[i].validated = 1;
7115 if (*p && (p[-1] == '|' || p[-1] == '&'))
7118 if (*p && p[-1] == ':')
7120 while (*p && *p != ';' && *p != '}')
7125 if (*p == '{' || *p == '<')
7126 p = validate_switches (p+1);
7127 else if (p[0] == 'W' && p[1] == '{')
7128 p = validate_switches (p+2);
7135 if (*p && p[-1] == ';')
7149 static struct mdswitchstr *mdswitches;
7150 static int n_mdswitches;
7152 /* Check whether a particular argument was used. The first time we
7153 canonicalize the switches to keep only the ones we care about. */
7156 used_arg (const char *p, int len)
7161 const char *replace;
7166 static struct mswitchstr *mswitches;
7167 static int n_mswitches;
7172 struct mswitchstr *matches;
7176 /* Break multilib_matches into the component strings of string
7177 and replacement string. */
7178 for (q = multilib_matches; *q != '\0'; q++)
7183 = (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
7185 q = multilib_matches;
7194 fatal_error ("multilib spec %qs is invalid",
7199 matches[i].len = q - matches[i].str;
7201 matches[i].replace = ++q;
7202 while (*q != ';' && *q != '\0')
7205 goto invalid_matches;
7208 matches[i].rep_len = q - matches[i].replace;
7214 /* Now build a list of the replacement string for switches that we care
7215 about. Make sure we allocate at least one entry. This prevents
7216 xmalloc from calling fatal, and prevents us from re-executing this
7219 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1));
7220 for (i = 0; i < n_switches; i++)
7221 if ((switches[i].live_cond & SWITCH_IGNORE) == 0)
7223 int xlen = strlen (switches[i].part1);
7224 for (j = 0; j < cnt; j++)
7225 if (xlen == matches[j].len
7226 && ! strncmp (switches[i].part1, matches[j].str, xlen))
7228 mswitches[n_mswitches].str = matches[j].replace;
7229 mswitches[n_mswitches].len = matches[j].rep_len;
7230 mswitches[n_mswitches].replace = (char *) 0;
7231 mswitches[n_mswitches].rep_len = 0;
7237 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7238 on the command line nor any options mutually incompatible with
7240 for (i = 0; i < n_mdswitches; i++)
7244 for (q = multilib_options; *q != '\0'; q++)
7250 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
7251 || strchr (" /", q[mdswitches[i].len]) == NULL)
7253 while (*q != ' ' && *q != '/' && *q != '\0')
7260 if (*q != ' ' && *q != '\0')
7262 while (*r != ' ' && *r != '\0')
7265 while (*q != ' ' && *q != '/' && *q != '\0')
7268 if (used_arg (r, q - r))
7273 mswitches[n_mswitches].str = mdswitches[i].str;
7274 mswitches[n_mswitches].len = mdswitches[i].len;
7275 mswitches[n_mswitches].replace = (char *) 0;
7276 mswitches[n_mswitches].rep_len = 0;
7289 for (i = 0; i < n_mswitches; i++)
7290 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
7297 default_arg (const char *p, int len)
7301 for (i = 0; i < n_mdswitches; i++)
7302 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
7308 /* Work out the subdirectory to use based on the options. The format of
7309 multilib_select is a list of elements. Each element is a subdirectory
7310 name followed by a list of options followed by a semicolon. The format
7311 of multilib_exclusions is the same, but without the preceding
7312 directory. First gcc will check the exclusions, if none of the options
7313 beginning with an exclamation point are present, and all of the other
7314 options are present, then we will ignore this completely. Passing
7315 that, gcc will consider each multilib_select in turn using the same
7316 rules for matching the options. If a match is found, that subdirectory
7320 set_multilib_dir (void)
7323 unsigned int this_path_len;
7324 const char *this_path, *this_arg;
7325 const char *start, *end;
7327 int ok, ndfltok, first;
7330 start = multilib_defaults;
7331 while (*start == ' ' || *start == '\t')
7333 while (*start != '\0')
7336 while (*start != ' ' && *start != '\t' && *start != '\0')
7338 while (*start == ' ' || *start == '\t')
7346 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches);
7347 for (start = multilib_defaults; *start != '\0'; start = end + 1)
7349 while (*start == ' ' || *start == '\t')
7355 for (end = start + 1;
7356 *end != ' ' && *end != '\t' && *end != '\0'; end++)
7359 obstack_grow (&multilib_obstack, start, end - start);
7360 obstack_1grow (&multilib_obstack, 0);
7361 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *);
7362 mdswitches[i++].len = end - start;
7369 p = multilib_exclusions;
7372 /* Ignore newlines. */
7379 /* Check the arguments. */
7386 fatal_error ("multilib exclusions %qs is invalid",
7387 multilib_exclusions);
7397 while (*p != ' ' && *p != ';')
7400 goto invalid_exclusions;
7404 if (*this_arg != '!')
7412 ok = used_arg (this_arg, p - this_arg);
7427 p = multilib_select;
7430 /* Ignore newlines. */
7437 /* Get the initial path. */
7444 fatal_error ("multilib select %qs is invalid",
7449 this_path_len = p - this_path;
7451 /* Check the arguments. */
7458 goto invalid_select;
7467 while (*p != ' ' && *p != ';')
7470 goto invalid_select;
7474 if (*this_arg != '!')
7482 /* If this is a default argument, we can just ignore it.
7483 This is true even if this_arg begins with '!'. Beginning
7484 with '!' does not mean that this argument is necessarily
7485 inappropriate for this library: it merely means that
7486 there is a more specific library which uses this
7487 argument. If this argument is a default, we need not
7488 consider that more specific library. */
7489 ok = used_arg (this_arg, p - this_arg);
7496 if (default_arg (this_arg, p - this_arg))
7505 if (this_path_len != 1
7506 || this_path[0] != '.')
7508 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1);
7511 strncpy (new_multilib_dir, this_path, this_path_len);
7512 new_multilib_dir[this_path_len] = '\0';
7513 q = strchr (new_multilib_dir, ':');
7516 multilib_dir = new_multilib_dir;
7523 const char *q = this_path, *end = this_path + this_path_len;
7525 while (q < end && *q != ':')
7529 char *new_multilib_os_dir = XNEWVEC (char, end - q);
7530 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
7531 new_multilib_os_dir[end - q - 1] = '\0';
7532 multilib_os_dir = new_multilib_os_dir;
7540 if (multilib_dir == NULL && multilib_os_dir != NULL
7541 && strcmp (multilib_os_dir, ".") == 0)
7543 free (CONST_CAST (char *, multilib_os_dir));
7544 multilib_os_dir = NULL;
7546 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7547 multilib_os_dir = multilib_dir;
7550 /* Print out the multiple library subdirectory selection
7551 information. This prints out a series of lines. Each line looks
7552 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7553 required. Only the desired options are printed out, the negative
7554 matches. The options are print without a leading dash. There are
7555 no spaces to make it easy to use the information in the shell.
7556 Each subdirectory is printed only once. This assumes the ordering
7557 generated by the genmultilib script. Also, we leave out ones that match
7561 print_multilib_info (void)
7563 const char *p = multilib_select;
7564 const char *last_path = 0, *this_path;
7566 unsigned int last_path_len = 0;
7571 /* Ignore newlines. */
7578 /* Get the initial path. */
7585 fatal_error ("multilib select %qs is invalid", multilib_select);
7591 /* When --disable-multilib was used but target defines
7592 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7593 to find multilib_os_dir, so skip them from output. */
7594 if (this_path[0] == '.' && this_path[1] == ':')
7597 /* Check for matches with the multilib_exclusions. We don't bother
7598 with the '!' in either list. If any of the exclusion rules match
7599 all of its options with the select rule, we skip it. */
7601 const char *e = multilib_exclusions;
7602 const char *this_arg;
7607 /* Ignore newlines. */
7614 /* Check the arguments. */
7623 fatal_error ("multilib exclusion %qs is invalid",
7624 multilib_exclusions);
7635 while (*e != ' ' && *e != ';')
7638 goto invalid_exclusion;
7646 int len = e - this_arg;
7649 goto invalid_select;
7653 while (*q != ' ' && *q != ';')
7656 goto invalid_select;
7660 if (! strncmp (arg, this_arg,
7661 (len < q - arg) ? q - arg : len)
7662 || default_arg (this_arg, e - this_arg))
7692 /* If this is a duplicate, skip it. */
7693 skip = (last_path != 0
7694 && (unsigned int) (p - this_path) == last_path_len
7695 && ! filename_ncmp (last_path, this_path, last_path_len));
7697 last_path = this_path;
7698 last_path_len = p - this_path;
7701 /* If this directory requires any default arguments, we can skip
7702 it. We will already have printed a directory identical to
7703 this one which does not require that default argument. */
7714 goto invalid_select;
7721 while (*q != ' ' && *q != ';')
7724 goto invalid_select;
7729 && default_arg (arg, q - arg))
7744 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7755 goto invalid_select;
7763 use_arg = *p != '!';
7768 while (*p != ' ' && *p != ';')
7771 goto invalid_select;
7783 /* If there are extra options, print them now. */
7784 if (multilib_extra && *multilib_extra)
7786 int print_at = TRUE;
7789 for (q = multilib_extra; *q != '\0'; q++)
7810 /* getenv built-in spec function.
7812 Returns the value of the environment variable given by its first
7813 argument, concatenated with the second argument. If the
7814 environment variable is not defined, a fatal error is issued. */
7817 getenv_spec_function (int argc, const char **argv)
7827 value = getenv (argv[0]);
7829 fatal_error ("environment variable %qs not defined", argv[0]);
7831 /* We have to escape every character of the environment variable so
7832 they are not interpreted as active spec characters. A
7833 particularly painful case is when we are reading a variable
7834 holding a windows path complete with \ separators. */
7835 len = strlen (value) * 2 + strlen (argv[1]) + 1;
7836 result = XNEWVAR (char, len);
7837 for (ptr = result; *value; ptr += 2)
7843 strcpy (ptr, argv[1]);
7848 /* if-exists built-in spec function.
7850 Checks to see if the file specified by the absolute pathname in
7851 ARGS exists. Returns that pathname if found.
7853 The usual use for this function is to check for a library file
7854 (whose name has been expanded with %s). */
7857 if_exists_spec_function (int argc, const char **argv)
7859 /* Must have only one argument. */
7860 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7866 /* if-exists-else built-in spec function.
7868 This is like if-exists, but takes an additional argument which
7869 is returned if the first argument does not exist. */
7872 if_exists_else_spec_function (int argc, const char **argv)
7874 /* Must have exactly two arguments. */
7878 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7884 /* replace-outfile built-in spec function.
7886 This looks for the first argument in the outfiles array's name and
7887 replaces it with the second argument. */
7890 replace_outfile_spec_function (int argc, const char **argv)
7893 /* Must have exactly two arguments. */
7897 for (i = 0; i < n_infiles; i++)
7899 if (outfiles[i] && !filename_cmp (outfiles[i], argv[0]))
7900 outfiles[i] = xstrdup (argv[1]);
7905 /* remove-outfile built-in spec function.
7907 * This looks for the first argument in the outfiles array's name and
7911 remove_outfile_spec_function (int argc, const char **argv)
7914 /* Must have exactly one argument. */
7918 for (i = 0; i < n_infiles; i++)
7920 if (outfiles[i] && !filename_cmp (outfiles[i], argv[0]))
7926 /* Given two version numbers, compares the two numbers.
7927 A version number must match the regular expression
7928 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
7931 compare_version_strings (const char *v1, const char *v2)
7936 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
7937 REG_EXTENDED | REG_NOSUB) != 0)
7939 rresult = regexec (&r, v1, 0, NULL, 0);
7940 if (rresult == REG_NOMATCH)
7941 fatal_error ("invalid version number %qs", v1);
7942 else if (rresult != 0)
7944 rresult = regexec (&r, v2, 0, NULL, 0);
7945 if (rresult == REG_NOMATCH)
7946 fatal_error ("invalid version number %qs", v2);
7947 else if (rresult != 0)
7950 return strverscmp (v1, v2);
7954 /* version_compare built-in spec function.
7956 This takes an argument of the following form:
7958 <comparison-op> <arg1> [<arg2>] <switch> <result>
7960 and produces "result" if the comparison evaluates to true,
7961 and nothing if it doesn't.
7963 The supported <comparison-op> values are:
7965 >= true if switch is a later (or same) version than arg1
7967 < true if switch is an earlier version than arg1
7969 >< true if switch is arg1 or later, and earlier than arg2
7970 <> true if switch is earlier than arg1 or is arg2 or later
7972 If the switch is not present, the condition is false unless
7973 the first character of the <comparison-op> is '!'.
7976 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
7977 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
7980 version_compare_spec_function (int argc, const char **argv)
7984 const char *switch_value = NULL;
7989 fatal_error ("too few arguments to %%:version-compare");
7990 if (argv[0][0] == '\0')
7992 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!')
7994 if (argc != nargs + 3)
7995 fatal_error ("too many arguments to %%:version-compare");
7997 switch_len = strlen (argv[nargs + 1]);
7998 for (i = 0; i < n_switches; i++)
7999 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len)
8000 && check_live_switch (i, switch_len))
8001 switch_value = switches[i].part1 + switch_len;
8003 if (switch_value == NULL)
8007 comp1 = compare_version_strings (switch_value, argv[1]);
8009 comp2 = compare_version_strings (switch_value, argv[2]);
8011 comp2 = -1; /* This value unused. */
8014 switch (argv[0][0] << 8 | argv[0][1])
8016 case '>' << 8 | '=':
8017 result = comp1 >= 0;
8019 case '!' << 8 | '<':
8020 result = comp1 >= 0 || switch_value == NULL;
8025 case '!' << 8 | '>':
8026 result = comp1 < 0 || switch_value == NULL;
8028 case '>' << 8 | '<':
8029 result = comp1 >= 0 && comp2 < 0;
8031 case '<' << 8 | '>':
8032 result = comp1 < 0 || comp2 >= 0;
8036 fatal_error ("unknown operator %qs in %%:version-compare", argv[0]);
8041 return argv[nargs + 2];
8044 /* %:include builtin spec function. This differs from %include in that it
8045 can be nested inside a spec, and thus be conditionalized. It takes
8046 one argument, the filename, and looks for it in the startfile path.
8047 The result is always NULL, i.e. an empty expansion. */
8050 include_spec_function (int argc, const char **argv)
8057 file = find_a_file (&startfile_prefixes, argv[0], R_OK, true);
8058 read_specs (file ? file : argv[0], FALSE);
8063 /* %:find-file spec function. This function replaces its argument by
8064 the file found thru find_file, that is the -print-file-name gcc
8067 find_file_spec_function (int argc, const char **argv)
8074 file = find_file (argv[0]);
8079 /* %:find-plugindir spec function. This function replaces its argument
8080 by the -iplugindir=<dir> option. `dir' is found thru find_file, that
8081 is the -print-file-name gcc program option. */
8083 find_plugindir_spec_function (int argc, const char **argv ATTRIBUTE_UNUSED)
8090 option = concat ("-iplugindir=", find_file ("plugin"), NULL);
8095 /* %:print-asm-header spec function. Print a banner to say that the
8096 following output is from the assembler. */
8099 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED,
8100 const char **argv ATTRIBUTE_UNUSED)
8102 printf (_("Assembler options\n=================\n\n"));
8103 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
8108 /* Get a random number for -frandom-seed */
8110 static unsigned HOST_WIDE_INT
8111 get_random_number (void)
8113 unsigned HOST_WIDE_INT ret = 0;
8116 fd = open ("/dev/urandom", O_RDONLY);
8119 read (fd, &ret, sizeof (HOST_WIDE_INT));
8125 /* Get some more or less random data. */
8126 #ifdef HAVE_GETTIMEOFDAY
8130 gettimeofday (&tv, NULL);
8131 ret = tv.tv_sec * 1000 + tv.tv_usec / 1000;
8135 time_t now = time (NULL);
8137 if (now != (time_t)-1)
8138 ret = (unsigned) now;
8142 return ret ^ getpid();
8145 /* %:compare-debug-dump-opt spec function. Save the last argument,
8146 expected to be the last -fdump-final-insns option, or generate a
8150 compare_debug_dump_opt_spec_function (int arg,
8151 const char **argv ATTRIBUTE_UNUSED)
8156 static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3];
8159 fatal_error ("too many arguments to %%:compare-debug-dump-opt");
8161 do_spec_2 ("%{fdump-final-insns=*:%*}");
8162 do_spec_1 (" ", 0, NULL);
8164 if (VEC_length (const_char_p, argbuf) > 0
8165 && strcmp (argv[VEC_length (const_char_p, argbuf) - 1], "."))
8170 name = xstrdup (argv[VEC_length (const_char_p, argbuf) - 1]);
8175 const char *ext = NULL;
8177 if (VEC_length (const_char_p, argbuf) > 0)
8179 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
8182 else if (!compare_debug)
8185 do_spec_2 ("%g.gkd");
8187 do_spec_1 (" ", 0, NULL);
8189 gcc_assert (VEC_length (const_char_p, argbuf) > 0);
8191 name = concat (VEC_last (const_char_p, argbuf), ext, NULL);
8193 ret = concat ("-fdump-final-insns=", name, NULL);
8196 which = compare_debug < 0;
8197 debug_check_temp_file[which] = name;
8201 unsigned HOST_WIDE_INT value = get_random_number ();
8203 sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value);
8207 ret = concat ("%{!frandom-seed=*:-frandom-seed=", random_seed, "} ",
8216 static const char *debug_auxbase_opt;
8218 /* %:compare-debug-self-opt spec function. Expands to the options
8219 that are to be passed in the second compilation of
8223 compare_debug_self_opt_spec_function (int arg,
8224 const char **argv ATTRIBUTE_UNUSED)
8227 fatal_error ("too many arguments to %%:compare-debug-self-opt");
8229 if (compare_debug >= 0)
8232 do_spec_2 ("%{c|S:%{o*:%*}}");
8233 do_spec_1 (" ", 0, NULL);
8235 if (VEC_length (const_char_p, argbuf) > 0)
8236 debug_auxbase_opt = concat ("-auxbase-strip ",
8237 VEC_last (const_char_p, argbuf),
8240 debug_auxbase_opt = NULL;
8243 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
8244 %<fdump-final-insns=* -w -S -o %j \
8245 %{!fcompare-debug-second:-fcompare-debug-second} \
8246 ", compare_debug_opt, NULL);
8249 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
8250 options that are to be passed in the second compilation of
8251 compare-debug. It expects, as an argument, the basename of the
8252 current input file name, with the .gk suffix appended to it. */
8255 compare_debug_auxbase_opt_spec_function (int arg,
8262 fatal_error ("too few arguments to %%:compare-debug-auxbase-opt");
8265 fatal_error ("too many arguments to %%:compare-debug-auxbase-opt");
8267 if (compare_debug >= 0)
8270 len = strlen (argv[0]);
8271 if (len < 3 || strcmp (argv[0] + len - 3, ".gk") != 0)
8272 fatal_error ("argument to %%:compare-debug-auxbase-opt "
8273 "does not end in .gk");
8275 if (debug_auxbase_opt)
8276 return debug_auxbase_opt;
8278 #define OPT "-auxbase "
8281 name = (char*) xmalloc (sizeof (OPT) + len);
8282 memcpy (name, OPT, sizeof (OPT) - 1);
8283 memcpy (name + sizeof (OPT) - 1, argv[0], len);
8284 name[sizeof (OPT) - 1 + len] = '\0';
8291 /* %:pass-through-libs spec function. Finds all -l options and input
8292 file names in the lib spec passed to it, and makes a list of them
8293 prepended with the plugin option to cause them to be passed through
8294 to the final link after all the new object files have been added. */
8297 pass_through_libs_spec_func (int argc, const char **argv)
8299 char *prepended = xstrdup (" ");
8301 /* Shlemiel the painter's algorithm. Innately horrible, but at least
8302 we know that there will never be more than a handful of strings to
8303 concat, and it's only once per run, so it's not worth optimising. */
8304 for (n = 0; n < argc; n++)
8306 char *old = prepended;
8307 /* Anything that isn't an option is a full path to an output
8308 file; pass it through if it ends in '.a'. Among options,
8310 if (argv[n][0] == '-' && argv[n][1] == 'l')
8312 const char *lopt = argv[n] + 2;
8313 /* Handle both joined and non-joined -l options. If for any
8314 reason there's a trailing -l with no joined or following
8315 arg just discard it. */
8316 if (!*lopt && ++n >= argc)
8320 prepended = concat (prepended, "-plugin-opt=-pass-through=-l",
8323 else if (!strcmp (".a", argv[n] + strlen (argv[n]) - 2))
8325 prepended = concat (prepended, "-plugin-opt=-pass-through=",
8326 argv[n], " ", NULL);
8328 if (prepended != old)