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 **);
270 static char *convert_white_space (char *);
272 /* The Specs Language
274 Specs are strings containing lines, each of which (if not blank)
275 is made up of a program name, and arguments separated by spaces.
276 The program name must be exact and start from root, since no path
277 is searched and it is unreliable to depend on the current working directory.
278 Redirection of input or output is not supported; the subprograms must
279 accept filenames saying what files to read and write.
281 In addition, the specs can contain %-sequences to substitute variable text
282 or for conditional text. Here is a table of all defined %-sequences.
283 Note that spaces are not generated automatically around the results of
284 expanding these sequences; therefore, you can concatenate them together
285 or with constant text in a single argument.
287 %% substitute one % into the program name or argument.
288 %i substitute the name of the input file being processed.
289 %b substitute the basename of the input file being processed.
290 This is the substring up to (and not including) the last period
291 and not including the directory unless -save-temps was specified
292 to put temporaries in a different location.
293 %B same as %b, but include the file suffix (text after the last period).
295 substitute a file name that has suffix SUFFIX and is chosen
296 once per compilation, and mark the argument a la %d. To reduce
297 exposure to denial-of-service attacks, the file name is now
298 chosen in a way that is hard to predict even when previously
299 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
300 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
301 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
302 had been pre-processed. Previously, %g was simply substituted
303 with a file name chosen once per compilation, without regard
304 to any appended suffix (which was therefore treated just like
305 ordinary text), making such attacks more likely to succeed.
307 like %g, but if -pipe is in effect, expands simply to "-".
309 like %g, but if -pipe is in effect, expands to nothing. (We have both
310 %| and %m to accommodate differences between system assemblers; see
311 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
313 like %g, but generates a new temporary file name even if %uSUFFIX
316 substitutes the last file name generated with %uSUFFIX, generating a
317 new one if there is no such last file name. In the absence of any
318 %uSUFFIX, this is just like %gSUFFIX, except they don't share
319 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
320 would involve the generation of two distinct file names, one
321 for each `%g.s' and another for each `%U.s'. Previously, %U was
322 simply substituted with a file name chosen for the previous %u,
323 without regard to any appended suffix.
325 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
326 writable, and if save-temps is off; otherwise, substitute the name
327 of a temporary file, just like %u. This temporary file is not
328 meant for communication between processes, but rather as a junk
331 substitutes .SUFFIX for the suffixes of a matched switch's args when
332 it is subsequently output with %*. SUFFIX is terminated by the next
334 %d marks the argument containing or following the %d as a
335 temporary file name, so that that file will be deleted if GCC exits
336 successfully. Unlike %g, this contributes no text to the argument.
337 %w marks the argument containing or following the %w as the
338 "output file" of this compilation. This puts the argument
339 into the sequence of arguments that %o will substitute later.
340 %V indicates that this compilation produces no "output file".
342 like %{...} but mark last argument supplied within
343 as a file to be deleted on failure.
344 %o substitutes the names of all the output files, with spaces
345 automatically placed around them. You should write spaces
346 around the %o as well or the results are undefined.
347 %o is for use in the specs for running the linker.
348 Input files whose names have no recognized suffix are not compiled
349 at all, but they are included among the output files, so they will
351 %O substitutes the suffix for object files. Note that this is
352 handled specially when it immediately follows %g, %u, or %U
353 (with or without a suffix argument) because of the need for
354 those to form complete file names. The handling is such that
355 %O is treated exactly as if it had already been substituted,
356 except that %g, %u, and %U do not currently support additional
357 SUFFIX characters following %O as they would following, for
359 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
360 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
361 and -B options) and -imultilib as necessary.
362 %s current argument is the name of a library or startup file of some sort.
363 Search for that file in a standard list of directories
364 and substitute the full name found.
365 %eSTR Print STR as an error message. STR is terminated by a newline.
366 Use this when inconsistent options are detected.
367 %nSTR Print STR as a notice. STR is terminated by a newline.
368 %x{OPTION} Accumulate an option for %X.
369 %X Output the accumulated linker options specified by compilations.
370 %Y Output the accumulated assembler options specified by compilations.
371 %Z Output the accumulated preprocessor options specified by compilations.
372 %a process ASM_SPEC as a spec.
373 This allows config.h to specify part of the spec for running as.
374 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
375 used here. This can be used to run a post-processor after the
376 assembler has done its job.
377 %D Dump out a -L option for each directory in startfile_prefixes.
378 If multilib_dir is set, extra entries are generated with it affixed.
379 %l process LINK_SPEC as a spec.
380 %L process LIB_SPEC as a spec.
381 %G process LIBGCC_SPEC as a spec.
382 %R Output the concatenation of target_system_root and
383 target_sysroot_suffix.
384 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
385 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
386 %C process CPP_SPEC as a spec.
387 %1 process CC1_SPEC as a spec.
388 %2 process CC1PLUS_SPEC as a spec.
389 %* substitute the variable part of a matched option. (See below.)
390 Note that each comma in the substituted string is replaced by
392 %<S remove all occurrences of -S from the command line.
393 Note - this command is position dependent. % commands in the
394 spec string before this one will see -S, % commands in the
395 spec string after this one will not.
396 %>S Similar to "%<S", but keep it in the GCC command line.
397 %<S* remove all occurrences of all switches beginning with -S from the
400 Call the named function FUNCTION, passing it ARGS. ARGS is
401 first processed as a nested spec string, then split into an
402 argument vector in the usual fashion. The function returns
403 a string which is processed as if it had appeared literally
404 as part of the current spec.
405 %{S} substitutes the -S switch, if that switch was given to GCC.
406 If that switch was not specified, this substitutes nothing.
407 Here S is a metasyntactic variable.
408 %{S*} substitutes all the switches specified to GCC whose names start
409 with -S. This is used for -o, -I, etc; switches that take
410 arguments. GCC considers `-o foo' as being one switch whose
411 name starts with `o'. %{o*} would substitute this text,
412 including the space; thus, two arguments would be generated.
413 %{S*&T*} likewise, but preserve order of S and T options (the order
414 of S and T in the spec is not significant). Can be any number
415 of ampersand-separated variables; for each the wild card is
416 optional. Useful for CPP as %{D*&U*&A*}.
418 %{S:X} substitutes X, if the -S switch was given to GCC.
419 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
420 %{S*:X} substitutes X if one or more switches whose names start
421 with -S was given to GCC. Normally X is substituted only
422 once, no matter how many such switches appeared. However,
423 if %* appears somewhere in X, then X will be substituted
424 once for each matching switch, with the %* replaced by the
425 part of that switch that matched the '*'.
426 %{.S:X} substitutes X, if processing a file with suffix S.
427 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
428 %{,S:X} substitutes X, if processing a file which will use spec S.
429 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
431 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
432 combined with '!', '.', ',', and '*' as above binding stronger
434 If %* appears in X, all of the alternatives must be starred, and
435 only the first matching alternative is substituted.
436 %{S:X; if S was given to GCC, substitutes X;
437 T:Y; else if T was given to GCC, substitutes Y;
438 :D} else substitutes D. There can be as many clauses as you need.
439 This may be combined with '.', '!', ',', '|', and '*' as above.
441 %(Spec) processes a specification defined in a specs file as *Spec:
443 The conditional text X in a %{S:X} or similar construct may contain
444 other nested % constructs or spaces, or even newlines. They are
445 processed as usual, as described above. Trailing white space in X is
446 ignored. White space may also appear anywhere on the left side of the
447 colon in these constructs, except between . or * and the corresponding
450 The -O, -f, -m, and -W switches are handled specifically in these
451 constructs. If another value of -O or the negated form of a -f, -m, or
452 -W switch is found later in the command line, the earlier switch
453 value is ignored, except with {S*} where S is just one letter; this
454 passes all matching options.
456 The character | at the beginning of the predicate text is used to indicate
457 that a command should be piped to the following command, but only if -pipe
460 Note that it is built into GCC which switches take arguments and which
461 do not. You might think it would be useful to generalize this to
462 allow each compiler's spec to say which switches take arguments. But
463 this cannot be done in a consistent fashion. GCC cannot even decide
464 which input files have been specified without knowing which switches
465 take arguments, and it must know which input files to compile in order
466 to tell which compilers to run.
468 GCC also knows implicitly that arguments starting in `-l' are to be
469 treated as compiler output files, and passed to the linker in their
470 proper position among the other output files. */
472 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
474 /* config.h can define ASM_SPEC to provide extra args to the assembler
475 or extra switch-translations. */
480 /* config.h can define ASM_FINAL_SPEC to run a post processor after
481 the assembler has run. */
482 #ifndef ASM_FINAL_SPEC
483 #define ASM_FINAL_SPEC ""
486 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
487 or extra switch-translations. */
492 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
493 or extra switch-translations. */
498 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
499 or extra switch-translations. */
501 #define CC1PLUS_SPEC ""
504 /* config.h can define LINK_SPEC to provide extra args to the linker
505 or extra switch-translations. */
510 /* config.h can define LIB_SPEC to override the default libraries. */
512 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
517 /* XXX: valid only for GNU ld */
518 /* XXX: should exactly match hooks provided by libmudflap.a */
519 #define MFWRAP_SPEC " %{static: %{fmudflap|fmudflapth: \
520 --wrap=malloc --wrap=free --wrap=calloc --wrap=realloc\
521 --wrap=mmap --wrap=mmap64 --wrap=munmap --wrap=alloca\
522 } %{fmudflapth: --wrap=pthread_create\
523 }} %{fmudflap|fmudflapth: --wrap=main}"
526 #define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}"
529 /* When using -fsplit-stack we need to wrap pthread_create, in order
530 to initialize the stack guard. We always use wrapping, rather than
531 shared library ordering, and we keep the wrapper function in
532 libgcc. This is not yet a real spec, though it could become one;
533 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping
534 only works with GNU ld and gold. FIXME: This is incompatible with
535 -fmudflap when linking statically, which wants to do its own
537 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}"
539 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
542 #if defined(REAL_LIBGCC_SPEC)
543 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
544 #elif defined(LINK_LIBGCC_SPECIAL_1)
545 /* Have gcc do the search for libgcc.a. */
546 #define LIBGCC_SPEC "libgcc.a%s"
548 #define LIBGCC_SPEC "-lgcc"
552 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
553 #ifndef STARTFILE_SPEC
554 #define STARTFILE_SPEC \
555 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
558 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
560 #define ENDFILE_SPEC ""
564 #define LINKER_NAME "collect2"
567 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
568 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
573 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
575 #ifndef ASM_DEBUG_SPEC
576 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
577 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
578 # define ASM_DEBUG_SPEC \
579 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
580 ? "%{!g0:%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}}" ASM_MAP \
581 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
583 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
584 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
586 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
587 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
591 #ifndef ASM_DEBUG_SPEC
592 # define ASM_DEBUG_SPEC ""
595 /* Here is the spec for running the linker, after compiling all files. */
597 /* This is overridable by the target in case they need to specify the
598 -lgcc and -lc order specially, yet not require them to override all
599 of LINK_COMMAND_SPEC. */
600 #ifndef LINK_GCC_C_SEQUENCE_SPEC
601 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
604 #ifndef LINK_SSP_SPEC
605 #ifdef TARGET_LIBC_PROVIDES_SSP
606 #define LINK_SSP_SPEC "%{fstack-protector:}"
608 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}"
612 #ifndef LINK_PIE_SPEC
614 #define LINK_PIE_SPEC "%{pie:-pie} "
616 #define LINK_PIE_SPEC "%{pie:} "
620 #ifndef LINK_BUILDID_SPEC
621 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
622 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
626 /* Conditional to test whether the LTO plugin is used or not.
627 FIXME: For slim LTO we will need to enable plugin unconditionally. This
628 still cause problems with PLUGIN_LD != LD and when plugin is built but
629 not useable. For GCC 4.6 we don't support slim LTO and thus we can enable
630 plugin only when LTO is enabled. We still honor explicit
631 -fuse-linker-plugin if the linker used understands -plugin. */
633 /* The linker has some plugin support. */
634 #if HAVE_LTO_PLUGIN > 0
635 /* The linker used has full plugin support, use LTO plugin by default. */
636 #if HAVE_LTO_PLUGIN == 2
637 #define PLUGIN_COND "!fno-use-linker-plugin:%{flto|flto=*|fuse-linker-plugin"
638 #define PLUGIN_COND_CLOSE "}"
640 /* The linker used has limited plugin support, use LTO plugin with explicit
641 -fuse-linker-plugin. */
642 #define PLUGIN_COND "fuse-linker-plugin"
643 #define PLUGIN_COND_CLOSE ""
645 #define LINK_PLUGIN_SPEC \
647 -plugin %(linker_plugin_file) \
648 -plugin-opt=%(lto_wrapper) \
649 -plugin-opt=-fresolution=%u.res \
650 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
653 /* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */
654 #define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\
655 %e-fuse-linker-plugin is not supported in this configuration}"
659 /* -u* was put back because both BSD and SysV seem to support it. */
660 /* %{static:} simply prevents an error message if the target machine
661 doesn't handle -static. */
662 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
663 scripts which exist in user specified directories, or in standard
665 /* We pass any -flto flags on to the linker, which is expected
666 to understand them. In practice, this means it had better be collect2. */
667 /* %{e*} includes -export-dynamic; see comment in common.opt. */
668 #ifndef LINK_COMMAND_SPEC
669 #define LINK_COMMAND_SPEC "\
670 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
673 "%{flto|flto=*:%<fcompare-debug*} \
674 %{flto} %{flto=*} %l " LINK_PIE_SPEC \
675 "%X %{o*} %{e*} %{N} %{n} %{r}\
676 %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}}\
677 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
678 %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
679 %{fgnu-tm:%:include(libitm.spec)%(link_itm)}\
680 %(mflib) " STACK_SPLIT_SPEC "\
681 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov}\
682 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
683 %{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}"
686 #ifndef LINK_LIBGCC_SPEC
687 /* Generate -L options for startfile prefix list. */
688 # define LINK_LIBGCC_SPEC "%D"
691 #ifndef STARTFILE_PREFIX_SPEC
692 # define STARTFILE_PREFIX_SPEC ""
696 # define SYSROOT_SPEC "--sysroot=%R"
699 #ifndef SYSROOT_SUFFIX_SPEC
700 # define SYSROOT_SUFFIX_SPEC ""
703 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
704 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
707 static const char *asm_debug;
708 static const char *cpp_spec = CPP_SPEC;
709 static const char *cc1_spec = CC1_SPEC;
710 static const char *cc1plus_spec = CC1PLUS_SPEC;
711 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
712 static const char *link_ssp_spec = LINK_SSP_SPEC;
713 static const char *asm_spec = ASM_SPEC;
714 static const char *asm_final_spec = ASM_FINAL_SPEC;
715 static const char *link_spec = LINK_SPEC;
716 static const char *lib_spec = LIB_SPEC;
717 static const char *mfwrap_spec = MFWRAP_SPEC;
718 static const char *mflib_spec = MFLIB_SPEC;
719 static const char *link_gomp_spec = "";
720 static const char *libgcc_spec = LIBGCC_SPEC;
721 static const char *endfile_spec = ENDFILE_SPEC;
722 static const char *startfile_spec = STARTFILE_SPEC;
723 static const char *linker_name_spec = LINKER_NAME;
724 static const char *linker_plugin_file_spec = "";
725 static const char *lto_wrapper_spec = "";
726 static const char *lto_gcc_spec = "";
727 static const char *link_command_spec = LINK_COMMAND_SPEC;
728 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
729 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
730 static const char *sysroot_spec = SYSROOT_SPEC;
731 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
732 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
733 static const char *self_spec = "";
735 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
736 There should be no need to override these in target dependent files,
737 but we need to copy them to the specs file so that newer versions
738 of the GCC driver can correctly drive older tool chains with the
739 appropriate -B options. */
741 /* When cpplib handles traditional preprocessing, get rid of this, and
742 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
743 that we default the front end language better. */
744 static const char *trad_capable_cpp =
745 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}";
747 /* We don't wrap .d files in %W{} since a missing .d file, and
748 therefore no dependency entry, confuses make into thinking a .o
749 file that happens to exist is up-to-date. */
750 static const char *cpp_unique_options =
751 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
752 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
753 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
754 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
755 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
756 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
757 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
758 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
759 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
760 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
763 /* This contains cpp options which are common with cc1_options and are passed
764 only when preprocessing only to avoid duplication. We pass the cc1 spec
765 options to the preprocessor so that it the cc1 spec may manipulate
766 options used to set target flags. Those special target flags settings may
767 in turn cause preprocessor symbols to be defined specially. */
768 static const char *cpp_options =
769 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
770 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
771 %{undef} %{save-temps*:-fpch-preprocess}";
773 /* This contains cpp options which are not passed when the preprocessor
774 output will be used by another program. */
775 static const char *cpp_debug_options = "%{d*}";
777 /* NB: This is shared amongst all front-ends, except for Ada. */
778 static const char *cc1_options =
779 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
780 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
781 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
782 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
783 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
784 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
785 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
786 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\
787 %{-target-help:--target-help}\
788 %{-version:--version}\
789 %{-help=*:--help=%*}\
790 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
791 %{fsyntax-only:-o %j} %{-param*}\
792 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\
793 %{coverage:-fprofile-arcs -ftest-coverage}";
795 static const char *asm_options =
796 "%{-target-help:%:print-asm-header()} "
798 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
799 to the assembler equivalents. */
800 "%{v} %{w:-W} %{I*} "
802 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
804 static const char *invoke_as =
805 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
807 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
808 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
812 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
813 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
817 /* Some compilers have limits on line lengths, and the multilib_select
818 and/or multilib_matches strings can be very long, so we build them at
820 static struct obstack multilib_obstack;
821 static const char *multilib_select;
822 static const char *multilib_matches;
823 static const char *multilib_defaults;
824 static const char *multilib_exclusions;
826 /* Check whether a particular argument is a default argument. */
828 #ifndef MULTILIB_DEFAULTS
829 #define MULTILIB_DEFAULTS { "" }
832 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
834 #ifndef DRIVER_SELF_SPECS
835 #define DRIVER_SELF_SPECS ""
838 /* Adding -fopenmp should imply pthreads. This is particularly important
839 for targets that use different start files and suchlike. */
840 #ifndef GOMP_SELF_SPECS
841 #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}"
844 /* Likewise for -fgnu-tm. */
845 #ifndef GTM_SELF_SPECS
846 #define GTM_SELF_SPECS "%{fgnu-tm: -pthread}"
849 static const char *const driver_self_specs[] = {
850 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
851 DRIVER_SELF_SPECS, CONFIGURE_SPECS, GOMP_SELF_SPECS, GTM_SELF_SPECS
854 #ifndef OPTION_DEFAULT_SPECS
855 #define OPTION_DEFAULT_SPECS { "", "" }
864 static const struct default_spec
865 option_default_specs[] = { OPTION_DEFAULT_SPECS };
869 struct user_specs *next;
870 const char *filename;
873 static struct user_specs *user_specs_head, *user_specs_tail;
876 /* Record the mapping from file suffixes for compilation specs. */
880 const char *suffix; /* Use this compiler for input files
881 whose names end in this suffix. */
883 const char *spec; /* To use this compiler, run this spec. */
885 const char *cpp_spec; /* If non-NULL, substitute this spec
886 for `%C', rather than the usual
888 const int combinable; /* If nonzero, compiler can deal with
889 multiple source files at once (IMA). */
890 const int needs_preprocessing; /* If nonzero, source files need to
891 be run through a preprocessor. */
894 /* Pointer to a vector of `struct compiler' that gives the spec for
895 compiling a file, based on its suffix.
896 A file that does not end in any of these suffixes will be passed
897 unchanged to the loader and nothing else will be done to it.
899 An entry containing two 0s is used to terminate the vector.
901 If multiple entries match a file, the last matching one is used. */
903 static struct compiler *compilers;
905 /* Number of entries in `compilers', not counting the null terminator. */
907 static int n_compilers;
909 /* The default list of file name suffixes and their compilation specs. */
911 static const struct compiler default_compilers[] =
913 /* Add lists of suffixes of known languages here. If those languages
914 were not present when we built the driver, we will hit these copies
915 and be given a more meaningful error than "file not used since
916 linking is not done". */
917 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
918 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
919 {".mii", "#Objective-C++", 0, 0, 0},
920 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
921 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
922 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
923 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
924 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
925 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
926 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
927 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
928 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
929 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
930 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
931 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
932 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
933 {".r", "#Ratfor", 0, 0, 0},
934 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
935 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
936 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
937 {".go", "#Go", 0, 1, 0},
938 /* Next come the entries for C. */
939 {".c", "@c", 0, 0, 1},
941 /* cc1 has an integrated ISO C preprocessor. We should invoke the
942 external preprocessor if -save-temps is given. */
943 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
946 %eGNU C no longer supports -traditional without -E}\
947 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
948 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
949 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
951 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
952 cc1 %(cpp_unique_options) %(cc1_options)}}}\
953 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
955 "%{!E:%e-E or -x required when input is from standard input}\
956 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
957 {".h", "@c-header", 0, 0, 0},
959 /* cc1 has an integrated ISO C preprocessor. We should invoke the
960 external preprocessor if -save-temps is given. */
961 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
963 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
964 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
965 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
967 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
968 %W{o*:--output-pch=%*}}%V}\
969 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
970 cc1 %(cpp_unique_options) %(cc1_options)\
971 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
972 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
973 {".i", "@cpp-output", 0, 0, 0},
975 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
976 {".s", "@assembler", 0, 0, 0},
978 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
979 {".sx", "@assembler-with-cpp", 0, 0, 0},
980 {".S", "@assembler-with-cpp", 0, 0, 0},
981 {"@assembler-with-cpp",
982 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
983 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
984 %{E|M|MM:%(cpp_debug_options)}\
985 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
986 as %(asm_debug) %(asm_options) %|.s %A }}}}"
988 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
989 %{E|M|MM:%(cpp_debug_options)}\
990 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
991 as %(asm_debug) %(asm_options) %m.s %A }}}}"
996 /* Mark end of table. */
1000 /* Number of elements in default_compilers, not counting the terminator. */
1002 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
1004 typedef char *char_p; /* For DEF_VEC_P. */
1006 DEF_VEC_ALLOC_P(char_p,heap);
1008 /* A vector of options to give to the linker.
1009 These options are accumulated by %x,
1010 and substituted into the linker command with %X. */
1011 static VEC(char_p,heap) *linker_options;
1013 /* A vector of options to give to the assembler.
1014 These options are accumulated by -Wa,
1015 and substituted into the assembler command with %Y. */
1016 static VEC(char_p,heap) *assembler_options;
1018 /* A vector of options to give to the preprocessor.
1019 These options are accumulated by -Wp,
1020 and substituted into the preprocessor command with %Z. */
1021 static VEC(char_p,heap) *preprocessor_options;
1024 skip_whitespace (char *p)
1028 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1029 be considered whitespace. */
1030 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1032 else if (*p == '\n' || *p == ' ' || *p == '\t')
1046 /* Structures to keep track of prefixes to try when looking for files. */
1050 const char *prefix; /* String to prepend to the path. */
1051 struct prefix_list *next; /* Next in linked list. */
1052 int require_machine_suffix; /* Don't use without machine_suffix. */
1053 /* 2 means try both machine_suffix and just_machine_suffix. */
1054 int priority; /* Sort key - priority within list. */
1055 int os_multilib; /* 1 if OS multilib scheme should be used,
1056 0 for GCC multilib scheme. */
1061 struct prefix_list *plist; /* List of prefixes to try */
1062 int max_len; /* Max length of a prefix in PLIST */
1063 const char *name; /* Name of this list (used in config stuff) */
1066 /* List of prefixes to try when looking for executables. */
1068 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1070 /* List of prefixes to try when looking for startup (crt0) files. */
1072 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1074 /* List of prefixes to try when looking for include files. */
1076 static struct path_prefix include_prefixes = { 0, 0, "include" };
1078 /* Suffix to attach to directories searched for commands.
1079 This looks like `MACHINE/VERSION/'. */
1081 static const char *machine_suffix = 0;
1083 /* Suffix to attach to directories searched for commands.
1084 This is just `MACHINE/'. */
1086 static const char *just_machine_suffix = 0;
1088 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1090 static const char *gcc_exec_prefix;
1092 /* Adjusted value of standard_libexec_prefix. */
1094 static const char *gcc_libexec_prefix;
1096 /* Default prefixes to attach to command names. */
1098 #ifndef STANDARD_STARTFILE_PREFIX_1
1099 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1101 #ifndef STANDARD_STARTFILE_PREFIX_2
1102 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1105 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1106 #undef MD_EXEC_PREFIX
1107 #undef MD_STARTFILE_PREFIX
1108 #undef MD_STARTFILE_PREFIX_1
1111 /* If no prefixes defined, use the null string, which will disable them. */
1112 #ifndef MD_EXEC_PREFIX
1113 #define MD_EXEC_PREFIX ""
1115 #ifndef MD_STARTFILE_PREFIX
1116 #define MD_STARTFILE_PREFIX ""
1118 #ifndef MD_STARTFILE_PREFIX_1
1119 #define MD_STARTFILE_PREFIX_1 ""
1122 /* These directories are locations set at configure-time based on the
1123 --prefix option provided to configure. Their initializers are
1124 defined in Makefile.in. These paths are not *directly* used when
1125 gcc_exec_prefix is set because, in that case, we know where the
1126 compiler has been installed, and use paths relative to that
1127 location instead. */
1128 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1129 static const char *const standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1130 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1131 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1133 /* For native compilers, these are well-known paths containing
1134 components that may be provided by the system. For cross
1135 compilers, these paths are not used. */
1136 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1137 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1138 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1139 static const char *const standard_startfile_prefix_1
1140 = STANDARD_STARTFILE_PREFIX_1;
1141 static const char *const standard_startfile_prefix_2
1142 = STANDARD_STARTFILE_PREFIX_2;
1144 /* A relative path to be used in finding the location of tools
1145 relative to the driver. */
1146 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1148 /* Subdirectory to use for locating libraries. Set by
1149 set_multilib_dir based on the compilation options. */
1151 static const char *multilib_dir;
1153 /* Subdirectory to use for locating libraries in OS conventions. Set by
1154 set_multilib_dir based on the compilation options. */
1156 static const char *multilib_os_dir;
1158 /* Subdirectory to use for locating libraries in multiarch conventions. Set by
1159 set_multilib_dir based on the compilation options. */
1161 static const char *multiarch_dir;
1163 /* Structure to keep track of the specs that have been defined so far.
1164 These are accessed using %(specname) in a compiler or link
1169 /* The following 2 fields must be first */
1170 /* to allow EXTRA_SPECS to be initialized */
1171 const char *name; /* name of the spec. */
1172 const char *ptr; /* available ptr if no static pointer */
1174 /* The following fields are not initialized */
1175 /* by EXTRA_SPECS */
1176 const char **ptr_spec; /* pointer to the spec itself. */
1177 struct spec_list *next; /* Next spec in linked list. */
1178 int name_len; /* length of the name */
1179 int alloc_p; /* whether string was allocated */
1182 #define INIT_STATIC_SPEC(NAME,PTR) \
1183 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1185 /* List of statically defined specs. */
1186 static struct spec_list static_specs[] =
1188 INIT_STATIC_SPEC ("asm", &asm_spec),
1189 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1190 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1191 INIT_STATIC_SPEC ("asm_options", &asm_options),
1192 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1193 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1194 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1195 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1196 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1197 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1198 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1199 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1200 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1201 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1202 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec),
1203 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1204 INIT_STATIC_SPEC ("link", &link_spec),
1205 INIT_STATIC_SPEC ("lib", &lib_spec),
1206 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec),
1207 INIT_STATIC_SPEC ("mflib", &mflib_spec),
1208 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec),
1209 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1210 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1211 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1212 INIT_STATIC_SPEC ("version", &compiler_version),
1213 INIT_STATIC_SPEC ("multilib", &multilib_select),
1214 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1215 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1216 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1217 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1218 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1219 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1220 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec),
1221 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec),
1222 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec),
1223 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1224 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1225 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1226 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1227 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1228 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec),
1229 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1230 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1231 INIT_STATIC_SPEC ("self_spec", &self_spec),
1234 #ifdef EXTRA_SPECS /* additional specs needed */
1235 /* Structure to keep track of just the first two args of a spec_list.
1236 That is all that the EXTRA_SPECS macro gives us. */
1239 const char *const name;
1240 const char *const ptr;
1243 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1244 static struct spec_list *extra_specs = (struct spec_list *) 0;
1247 /* List of dynamically allocates specs that have been defined so far. */
1249 static struct spec_list *specs = (struct spec_list *) 0;
1251 /* List of static spec functions. */
1253 static const struct spec_function static_spec_functions[] =
1255 { "getenv", getenv_spec_function },
1256 { "if-exists", if_exists_spec_function },
1257 { "if-exists-else", if_exists_else_spec_function },
1258 { "replace-outfile", replace_outfile_spec_function },
1259 { "remove-outfile", remove_outfile_spec_function },
1260 { "version-compare", version_compare_spec_function },
1261 { "include", include_spec_function },
1262 { "find-file", find_file_spec_function },
1263 { "find-plugindir", find_plugindir_spec_function },
1264 { "print-asm-header", print_asm_header_spec_function },
1265 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function },
1266 { "compare-debug-self-opt", compare_debug_self_opt_spec_function },
1267 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function },
1268 { "pass-through-libs", pass_through_libs_spec_func },
1269 #ifdef EXTRA_SPEC_FUNCTIONS
1270 EXTRA_SPEC_FUNCTIONS
1275 static int processing_spec_function;
1277 /* Add appropriate libgcc specs to OBSTACK, taking into account
1278 various permutations of -shared-libgcc, -shared, and such. */
1280 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1282 #ifndef USE_LD_AS_NEEDED
1283 #define USE_LD_AS_NEEDED 0
1287 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1288 const char *static_name, const char *eh_name)
1292 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}"
1293 "%{!static:%{!static-libgcc:"
1294 #if USE_LD_AS_NEEDED
1295 "%{!shared-libgcc:",
1296 static_name, " --as-needed ", shared_name, " --no-as-needed"
1299 shared_name, "%{!shared: ", static_name, "}"
1303 "%{!shared-libgcc:", static_name, " ", eh_name, "}"
1304 "%{shared-libgcc:", shared_name, " ", static_name, "}"
1308 "%{shared-libgcc:", shared_name, "}"
1309 "%{!shared-libgcc:", static_name, "}"
1312 "%{shared:", shared_name, "}"
1317 obstack_grow (obstack, buf, strlen (buf));
1320 #endif /* ENABLE_SHARED_LIBGCC */
1322 /* Initialize the specs lookup routines. */
1327 struct spec_list *next = (struct spec_list *) 0;
1328 struct spec_list *sl = (struct spec_list *) 0;
1332 return; /* Already initialized. */
1335 fnotice (stderr, "Using built-in specs.\n");
1338 extra_specs = XCNEWVEC (struct spec_list, ARRAY_SIZE (extra_specs_1));
1340 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1342 sl = &extra_specs[i];
1343 sl->name = extra_specs_1[i].name;
1344 sl->ptr = extra_specs_1[i].ptr;
1346 sl->name_len = strlen (sl->name);
1347 sl->ptr_spec = &sl->ptr;
1352 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1354 sl = &static_specs[i];
1359 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1360 /* ??? If neither -shared-libgcc nor --static-libgcc was
1361 seen, then we should be making an educated guess. Some proposed
1362 heuristics for ELF include:
1364 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1365 program will be doing dynamic loading, which will likely
1366 need the shared libgcc.
1368 (2) If "-ldl", then it's also a fair bet that we're doing
1371 (3) For each ET_DYN we're linking against (either through -lfoo
1372 or /some/path/foo.so), check to see whether it or one of
1373 its dependencies depends on a shared libgcc.
1377 If the runtime is fixed to look for program headers instead
1378 of calling __register_frame_info at all, for each object,
1379 use the shared libgcc if any EH symbol referenced.
1381 If crtstuff is fixed to not invoke __register_frame_info
1382 automatically, for each object, use the shared libgcc if
1383 any non-empty unwind section found.
1385 Doing any of this probably requires invoking an external program to
1386 do the actual object file scanning. */
1388 const char *p = libgcc_spec;
1391 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1392 when given the proper command line arguments. */
1395 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1397 init_gcc_specs (&obstack,
1399 #ifdef USE_LIBUNWIND_EXCEPTIONS
1405 #ifdef USE_LIBUNWIND_EXCEPTIONS
1406 # ifdef HAVE_LD_STATIC_DYNAMIC
1407 " %{!static:" LD_STATIC_OPTION "} -lunwind"
1408 " %{!static:" LD_DYNAMIC_OPTION "}"
1418 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1420 /* Ug. We don't know shared library extensions. Hope that
1421 systems that use this form don't do shared libraries. */
1422 init_gcc_specs (&obstack,
1426 #ifdef USE_LIBUNWIND_EXCEPTIONS
1435 obstack_1grow (&obstack, *p);
1436 in_sep = (*p == ' ');
1441 obstack_1grow (&obstack, '\0');
1442 libgcc_spec = XOBFINISH (&obstack, const char *);
1445 #ifdef USE_AS_TRADITIONAL_FORMAT
1446 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1448 static const char tf[] = "--traditional-format ";
1449 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1450 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1451 asm_spec = XOBFINISH (&obstack, const char *);
1455 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \
1456 defined LINKER_HASH_STYLE
1457 # ifdef LINK_BUILDID_SPEC
1458 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1459 obstack_grow (&obstack, LINK_BUILDID_SPEC, sizeof(LINK_BUILDID_SPEC) - 1);
1461 # ifdef LINK_EH_SPEC
1462 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1463 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1465 # ifdef LINKER_HASH_STYLE
1466 /* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had
1469 static const char hash_style[] = "--hash-style=";
1470 obstack_grow (&obstack, hash_style, sizeof(hash_style) - 1);
1471 obstack_grow (&obstack, LINKER_HASH_STYLE, sizeof(LINKER_HASH_STYLE) - 1);
1472 obstack_1grow (&obstack, ' ');
1475 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1476 link_spec = XOBFINISH (&obstack, const char *);
1482 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1483 removed; If the spec starts with a + then SPEC is added to the end of the
1487 set_spec (const char *name, const char *spec)
1489 struct spec_list *sl;
1490 const char *old_spec;
1491 int name_len = strlen (name);
1494 /* If this is the first call, initialize the statically allocated specs. */
1497 struct spec_list *next = (struct spec_list *) 0;
1498 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1500 sl = &static_specs[i];
1507 /* See if the spec already exists. */
1508 for (sl = specs; sl; sl = sl->next)
1509 if (name_len == sl->name_len && !strcmp (sl->name, name))
1514 /* Not found - make it. */
1515 sl = XNEW (struct spec_list);
1516 sl->name = xstrdup (name);
1517 sl->name_len = name_len;
1518 sl->ptr_spec = &sl->ptr;
1520 *(sl->ptr_spec) = "";
1525 old_spec = *(sl->ptr_spec);
1526 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1527 ? concat (old_spec, spec + 1, NULL)
1532 fnotice (stderr, "Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1535 /* Free the old spec. */
1536 if (old_spec && sl->alloc_p)
1537 free (CONST_CAST(char *, old_spec));
1542 /* Accumulate a command (program name and args), and run it. */
1544 typedef const char *const_char_p; /* For DEF_VEC_P. */
1545 DEF_VEC_P(const_char_p);
1546 DEF_VEC_ALLOC_P(const_char_p,heap);
1548 /* Vector of pointers to arguments in the current line of specifications. */
1550 static VEC(const_char_p,heap) *argbuf;
1552 /* Position in the argbuf vector containing the name of the output file
1553 (the value associated with the "-o" flag). */
1555 static int have_o_argbuf_index = 0;
1557 /* Were the options -c, -S or -E passed. */
1558 static int have_c = 0;
1560 /* Was the option -o passed. */
1561 static int have_o = 0;
1563 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1564 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1567 static struct temp_name {
1568 const char *suffix; /* suffix associated with the code. */
1569 int length; /* strlen (suffix). */
1570 int unique; /* Indicates whether %g or %u/%U was used. */
1571 const char *filename; /* associated filename. */
1572 int filename_length; /* strlen (filename). */
1573 struct temp_name *next;
1576 /* Number of commands executed so far. */
1578 static int execution_count;
1580 /* Number of commands that exited with a signal. */
1582 static int signal_count;
1584 /* Allocate the argument vector. */
1589 argbuf = VEC_alloc (const_char_p, heap, 10);
1592 /* Clear out the vector of arguments (after a command is executed). */
1597 VEC_truncate (const_char_p, argbuf, 0);
1600 /* Add one argument to the vector at the end.
1601 This is done when a space is seen or at the end of the line.
1602 If DELETE_ALWAYS is nonzero, the arg is a filename
1603 and the file should be deleted eventually.
1604 If DELETE_FAILURE is nonzero, the arg is a filename
1605 and the file should be deleted if this compilation fails. */
1608 store_arg (const char *arg, int delete_always, int delete_failure)
1610 VEC_safe_push (const_char_p, heap, argbuf, arg);
1612 if (strcmp (arg, "-o") == 0)
1613 have_o_argbuf_index = VEC_length (const_char_p, argbuf);
1614 if (delete_always || delete_failure)
1617 /* If the temporary file we should delete is specified as
1618 part of a joined argument extract the filename. */
1620 && (p = strrchr (arg, '=')))
1622 record_temp_file (arg, delete_always, delete_failure);
1626 /* Load specs from a file name named FILENAME, replacing occurrences of
1627 various different types of line-endings, \r\n, \n\r and just \r, with
1631 load_specs (const char *filename)
1635 struct stat statbuf;
1642 fnotice (stderr, "Reading specs from %s\n", filename);
1644 /* Open and stat the file. */
1645 desc = open (filename, O_RDONLY, 0);
1647 pfatal_with_name (filename);
1648 if (stat (filename, &statbuf) < 0)
1649 pfatal_with_name (filename);
1651 /* Read contents of file into BUFFER. */
1652 buffer = XNEWVEC (char, statbuf.st_size + 1);
1653 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1655 pfatal_with_name (filename);
1656 buffer[readlen] = 0;
1659 specs = XNEWVEC (char, readlen + 1);
1661 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1667 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1669 else if (*(buffer_p + 1) == '\n') /* \r\n */
1683 /* Read compilation specs from a file named FILENAME,
1684 replacing the default ones.
1686 A suffix which starts with `*' is a definition for
1687 one of the machine-specific sub-specs. The "suffix" should be
1688 *asm, *cc1, *cpp, *link, *startfile, etc.
1689 The corresponding spec is stored in asm_spec, etc.,
1690 rather than in the `compilers' vector.
1692 Anything invalid in the file is a fatal error. */
1695 read_specs (const char *filename, int main_p)
1700 buffer = load_specs (filename);
1702 /* Scan BUFFER for specs, putting them in the vector. */
1708 char *in, *out, *p1, *p2, *p3;
1710 /* Advance P in BUFFER to the next nonblank nocomment line. */
1711 p = skip_whitespace (p);
1715 /* Is this a special command that starts with '%'? */
1716 /* Don't allow this for the main specs file, since it would
1717 encourage people to overwrite it. */
1718 if (*p == '%' && !main_p)
1721 while (*p && *p != '\n')
1727 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1728 && (p1[sizeof "%include" - 1] == ' '
1729 || p1[sizeof "%include" - 1] == '\t'))
1733 p1 += sizeof ("%include");
1734 while (*p1 == ' ' || *p1 == '\t')
1737 if (*p1++ != '<' || p[-2] != '>')
1738 fatal_error ("specs %%include syntax malformed after "
1740 (long) (p1 - buffer + 1));
1743 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1744 read_specs (new_filename ? new_filename : p1, FALSE);
1747 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1748 && (p1[sizeof "%include_noerr" - 1] == ' '
1749 || p1[sizeof "%include_noerr" - 1] == '\t'))
1753 p1 += sizeof "%include_noerr";
1754 while (*p1 == ' ' || *p1 == '\t')
1757 if (*p1++ != '<' || p[-2] != '>')
1758 fatal_error ("specs %%include syntax malformed after "
1760 (long) (p1 - buffer + 1));
1763 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1765 read_specs (new_filename, FALSE);
1766 else if (verbose_flag)
1767 fnotice (stderr, "could not find specs file %s\n", p1);
1770 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1771 && (p1[sizeof "%rename" - 1] == ' '
1772 || p1[sizeof "%rename" - 1] == '\t'))
1775 struct spec_list *sl;
1776 struct spec_list *newsl;
1778 /* Get original name. */
1779 p1 += sizeof "%rename";
1780 while (*p1 == ' ' || *p1 == '\t')
1783 if (! ISALPHA ((unsigned char) *p1))
1784 fatal_error ("specs %%rename syntax malformed after "
1786 (long) (p1 - buffer));
1789 while (*p2 && !ISSPACE ((unsigned char) *p2))
1792 if (*p2 != ' ' && *p2 != '\t')
1793 fatal_error ("specs %%rename syntax malformed after "
1795 (long) (p2 - buffer));
1799 while (*p2 == ' ' || *p2 == '\t')
1802 if (! ISALPHA ((unsigned char) *p2))
1803 fatal_error ("specs %%rename syntax malformed after "
1805 (long) (p2 - buffer));
1807 /* Get new spec name. */
1809 while (*p3 && !ISSPACE ((unsigned char) *p3))
1813 fatal_error ("specs %%rename syntax malformed after "
1815 (long) (p3 - buffer));
1818 for (sl = specs; sl; sl = sl->next)
1819 if (name_len == sl->name_len && !strcmp (sl->name, p1))
1823 fatal_error ("specs %s spec was not found to be renamed", p1);
1825 if (strcmp (p1, p2) == 0)
1828 for (newsl = specs; newsl; newsl = newsl->next)
1829 if (strcmp (newsl->name, p2) == 0)
1830 fatal_error ("%s: attempt to rename spec %qs to "
1831 "already defined spec %qs",
1836 fnotice (stderr, "rename spec %s to %s\n", p1, p2);
1838 fnotice (stderr, "spec is '%s'\n\n", *(sl->ptr_spec));
1842 set_spec (p2, *(sl->ptr_spec));
1844 free (CONST_CAST (char *, *(sl->ptr_spec)));
1846 *(sl->ptr_spec) = "";
1851 fatal_error ("specs unknown %% command after %ld characters",
1852 (long) (p1 - buffer));
1855 /* Find the colon that should end the suffix. */
1857 while (*p1 && *p1 != ':' && *p1 != '\n')
1860 /* The colon shouldn't be missing. */
1862 fatal_error ("specs file malformed after %ld characters",
1863 (long) (p1 - buffer));
1865 /* Skip back over trailing whitespace. */
1867 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
1870 /* Copy the suffix to a string. */
1871 suffix = save_string (p, p2 - p);
1872 /* Find the next line. */
1873 p = skip_whitespace (p1 + 1);
1875 fatal_error ("specs file malformed after %ld characters",
1876 (long) (p - buffer));
1879 /* Find next blank line or end of string. */
1880 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
1883 /* Specs end at the blank line and do not include the newline. */
1884 spec = save_string (p, p1 - p);
1887 /* Delete backslash-newline sequences from the spec. */
1892 if (in[0] == '\\' && in[1] == '\n')
1894 else if (in[0] == '#')
1895 while (*in && *in != '\n')
1903 if (suffix[0] == '*')
1905 if (! strcmp (suffix, "*link_command"))
1906 link_command_spec = spec;
1908 set_spec (suffix + 1, spec);
1912 /* Add this pair to the vector. */
1914 = XRESIZEVEC (struct compiler, compilers, n_compilers + 2);
1916 compilers[n_compilers].suffix = suffix;
1917 compilers[n_compilers].spec = spec;
1919 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
1923 link_command_spec = spec;
1926 if (link_command_spec == 0)
1927 fatal_error ("spec file has no spec for linking");
1930 /* Record the names of temporary files we tell compilers to write,
1931 and delete them at the end of the run. */
1933 /* This is the common prefix we use to make temp file names.
1934 It is chosen once for each run of this program.
1935 It is substituted into a spec by %g or %j.
1936 Thus, all temp file names contain this prefix.
1937 In practice, all temp file names start with this prefix.
1939 This prefix comes from the envvar TMPDIR if it is defined;
1940 otherwise, from the P_tmpdir macro if that is defined;
1941 otherwise, in /usr/tmp or /tmp;
1942 or finally the current directory if all else fails. */
1944 static const char *temp_filename;
1946 /* Length of the prefix. */
1948 static int temp_filename_length;
1950 /* Define the list of temporary files to delete. */
1955 struct temp_file *next;
1958 /* Queue of files to delete on success or failure of compilation. */
1959 static struct temp_file *always_delete_queue;
1960 /* Queue of files to delete on failure of compilation. */
1961 static struct temp_file *failure_delete_queue;
1963 /* Record FILENAME as a file to be deleted automatically.
1964 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
1965 otherwise delete it in any case.
1966 FAIL_DELETE nonzero means delete it if a compilation step fails;
1967 otherwise delete it in any case. */
1970 record_temp_file (const char *filename, int always_delete, int fail_delete)
1972 char *const name = xstrdup (filename);
1976 struct temp_file *temp;
1977 for (temp = always_delete_queue; temp; temp = temp->next)
1978 if (! filename_cmp (name, temp->name))
1981 temp = XNEW (struct temp_file);
1982 temp->next = always_delete_queue;
1984 always_delete_queue = temp;
1991 struct temp_file *temp;
1992 for (temp = failure_delete_queue; temp; temp = temp->next)
1993 if (! filename_cmp (name, temp->name))
1996 temp = XNEW (struct temp_file);
1997 temp->next = failure_delete_queue;
1999 failure_delete_queue = temp;
2005 /* Delete all the temporary files whose names we previously recorded. */
2007 #ifndef DELETE_IF_ORDINARY
2008 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2011 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2012 if (unlink (NAME) < 0) \
2014 perror_with_name (NAME); \
2019 delete_if_ordinary (const char *name)
2025 printf ("Delete %s? (y or n) ", name);
2029 while ((c = getchar ()) != '\n' && c != EOF)
2032 if (i == 'y' || i == 'Y')
2034 DELETE_IF_ORDINARY (name, st, verbose_flag);
2038 delete_temp_files (void)
2040 struct temp_file *temp;
2042 for (temp = always_delete_queue; temp; temp = temp->next)
2043 delete_if_ordinary (temp->name);
2044 always_delete_queue = 0;
2047 /* Delete all the files to be deleted on error. */
2050 delete_failure_queue (void)
2052 struct temp_file *temp;
2054 for (temp = failure_delete_queue; temp; temp = temp->next)
2055 delete_if_ordinary (temp->name);
2059 clear_failure_queue (void)
2061 failure_delete_queue = 0;
2064 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2066 If DO_MULTI is true iterate over the paths twice, first with multilib
2067 suffix then without, otherwise iterate over the paths once without
2068 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2069 to avoid visiting the same path twice, but we could do better. For
2070 instance, /usr/lib/../lib is considered different from /usr/lib.
2071 At least EXTRA_SPACE chars past the end of the path passed to
2072 CALLBACK are available for use by the callback.
2073 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2075 Returns the value returned by CALLBACK. */
2078 for_each_path (const struct path_prefix *paths,
2081 void *(*callback) (char *, void *),
2082 void *callback_info)
2084 struct prefix_list *pl;
2085 const char *multi_dir = NULL;
2086 const char *multi_os_dir = NULL;
2087 const char *multiarch_suffix = NULL;
2088 const char *multi_suffix;
2089 const char *just_multi_suffix;
2092 bool skip_multi_dir = false;
2093 bool skip_multi_os_dir = false;
2095 multi_suffix = machine_suffix;
2096 just_multi_suffix = just_machine_suffix;
2097 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0)
2099 multi_dir = concat (multilib_dir, dir_separator_str, NULL);
2100 multi_suffix = concat (multi_suffix, multi_dir, NULL);
2101 just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL);
2103 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0)
2104 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL);
2106 multiarch_suffix = concat (multiarch_dir, dir_separator_str, NULL);
2110 size_t multi_dir_len = 0;
2111 size_t multi_os_dir_len = 0;
2112 size_t multiarch_len = 0;
2114 size_t just_suffix_len;
2118 multi_dir_len = strlen (multi_dir);
2120 multi_os_dir_len = strlen (multi_os_dir);
2121 if (multiarch_suffix)
2122 multiarch_len = strlen (multiarch_suffix);
2123 suffix_len = strlen (multi_suffix);
2124 just_suffix_len = strlen (just_multi_suffix);
2128 len = paths->max_len + extra_space + 1;
2129 len += MAX (MAX (suffix_len, multi_os_dir_len), multiarch_len);
2130 path = XNEWVEC (char, len);
2133 for (pl = paths->plist; pl != 0; pl = pl->next)
2135 len = strlen (pl->prefix);
2136 memcpy (path, pl->prefix, len);
2138 /* Look first in MACHINE/VERSION subdirectory. */
2139 if (!skip_multi_dir)
2141 memcpy (path + len, multi_suffix, suffix_len + 1);
2142 ret = callback (path, callback_info);
2147 /* Some paths are tried with just the machine (ie. target)
2148 subdir. This is used for finding as, ld, etc. */
2150 && pl->require_machine_suffix == 2)
2152 memcpy (path + len, just_multi_suffix, just_suffix_len + 1);
2153 ret = callback (path, callback_info);
2158 /* Now try the multiarch path. */
2160 && !pl->require_machine_suffix && multiarch_dir)
2162 memcpy (path + len, multiarch_suffix, multiarch_len + 1);
2163 ret = callback (path, callback_info);
2168 /* Now try the base path. */
2169 if (!pl->require_machine_suffix
2170 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir))
2172 const char *this_multi;
2173 size_t this_multi_len;
2175 if (pl->os_multilib)
2177 this_multi = multi_os_dir;
2178 this_multi_len = multi_os_dir_len;
2182 this_multi = multi_dir;
2183 this_multi_len = multi_dir_len;
2187 memcpy (path + len, this_multi, this_multi_len + 1);
2191 ret = callback (path, callback_info);
2199 if (multi_dir == NULL && multi_os_dir == NULL)
2202 /* Run through the paths again, this time without multilibs.
2203 Don't repeat any we have already seen. */
2206 free (CONST_CAST (char *, multi_dir));
2208 free (CONST_CAST (char *, multi_suffix));
2209 multi_suffix = machine_suffix;
2210 free (CONST_CAST (char *, just_multi_suffix));
2211 just_multi_suffix = just_machine_suffix;
2214 skip_multi_dir = true;
2217 free (CONST_CAST (char *, multi_os_dir));
2218 multi_os_dir = NULL;
2221 skip_multi_os_dir = true;
2226 free (CONST_CAST (char *, multi_dir));
2227 free (CONST_CAST (char *, multi_suffix));
2228 free (CONST_CAST (char *, just_multi_suffix));
2231 free (CONST_CAST (char *, multi_os_dir));
2237 /* Callback for build_search_list. Adds path to obstack being built. */
2239 struct add_to_obstack_info {
2246 add_to_obstack (char *path, void *data)
2248 struct add_to_obstack_info *info = (struct add_to_obstack_info *) data;
2250 if (info->check_dir && !is_directory (path, false))
2253 if (!info->first_time)
2254 obstack_1grow (info->ob, PATH_SEPARATOR);
2256 obstack_grow (info->ob, path, strlen (path));
2258 info->first_time = false;
2262 /* Add or change the value of an environment variable, outputting the
2263 change to standard error if in verbose mode. */
2265 xputenv (const char *string)
2268 fnotice (stderr, "%s\n", string);
2269 putenv (CONST_CAST (char *, string));
2272 /* Build a list of search directories from PATHS.
2273 PREFIX is a string to prepend to the list.
2274 If CHECK_DIR_P is true we ensure the directory exists.
2275 If DO_MULTI is true, multilib paths are output first, then
2277 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2278 It is also used by the --print-search-dirs flag. */
2281 build_search_list (const struct path_prefix *paths, const char *prefix,
2282 bool check_dir, bool do_multi)
2284 struct add_to_obstack_info info;
2286 info.ob = &collect_obstack;
2287 info.check_dir = check_dir;
2288 info.first_time = true;
2290 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2291 obstack_1grow (&collect_obstack, '=');
2293 for_each_path (paths, do_multi, 0, add_to_obstack, &info);
2295 obstack_1grow (&collect_obstack, '\0');
2296 return XOBFINISH (&collect_obstack, char *);
2299 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2303 putenv_from_prefixes (const struct path_prefix *paths, const char *env_var,
2306 xputenv (build_search_list (paths, env_var, true, do_multi));
2309 /* Check whether NAME can be accessed in MODE. This is like access,
2310 except that it never considers directories to be executable. */
2313 access_check (const char *name, int mode)
2319 if (stat (name, &st) < 0
2320 || S_ISDIR (st.st_mode))
2324 return access (name, mode);
2327 /* Callback for find_a_file. Appends the file name to the directory
2328 path. If the resulting file exists in the right mode, return the
2329 full pathname to the file. */
2331 struct file_at_path_info {
2340 file_at_path (char *path, void *data)
2342 struct file_at_path_info *info = (struct file_at_path_info *) data;
2343 size_t len = strlen (path);
2345 memcpy (path + len, info->name, info->name_len);
2346 len += info->name_len;
2348 /* Some systems have a suffix for executable files.
2349 So try appending that first. */
2350 if (info->suffix_len)
2352 memcpy (path + len, info->suffix, info->suffix_len + 1);
2353 if (access_check (path, info->mode) == 0)
2358 if (access_check (path, info->mode) == 0)
2364 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2365 access to check permissions. If DO_MULTI is true, search multilib
2366 paths then non-multilib paths, otherwise do not search multilib paths.
2367 Return 0 if not found, otherwise return its name, allocated with malloc. */
2370 find_a_file (const struct path_prefix *pprefix, const char *name, int mode,
2373 struct file_at_path_info info;
2375 #ifdef DEFAULT_ASSEMBLER
2376 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2377 return xstrdup (DEFAULT_ASSEMBLER);
2380 #ifdef DEFAULT_LINKER
2381 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2382 return xstrdup (DEFAULT_LINKER);
2385 /* Determine the filename to execute (special case for absolute paths). */
2387 if (IS_ABSOLUTE_PATH (name))
2389 if (access (name, mode) == 0)
2390 return xstrdup (name);
2396 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "";
2397 info.name_len = strlen (info.name);
2398 info.suffix_len = strlen (info.suffix);
2401 return (char*) for_each_path (pprefix, do_multi,
2402 info.name_len + info.suffix_len,
2403 file_at_path, &info);
2406 /* Ranking of prefixes in the sort list. -B prefixes are put before
2409 enum path_prefix_priority
2411 PREFIX_PRIORITY_B_OPT,
2412 PREFIX_PRIORITY_LAST
2415 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2416 order according to PRIORITY. Within each PRIORITY, new entries are
2419 If WARN is nonzero, we will warn if no file is found
2420 through this prefix. WARN should point to an int
2421 which will be set to 1 if this entry is used.
2423 COMPONENT is the value to be passed to update_path.
2425 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2426 the complete value of machine_suffix.
2427 2 means try both machine_suffix and just_machine_suffix. */
2430 add_prefix (struct path_prefix *pprefix, const char *prefix,
2431 const char *component, /* enum prefix_priority */ int priority,
2432 int require_machine_suffix, int os_multilib)
2434 struct prefix_list *pl, **prev;
2437 for (prev = &pprefix->plist;
2438 (*prev) != NULL && (*prev)->priority <= priority;
2439 prev = &(*prev)->next)
2442 /* Keep track of the longest prefix. */
2444 prefix = update_path (prefix, component);
2445 len = strlen (prefix);
2446 if (len > pprefix->max_len)
2447 pprefix->max_len = len;
2449 pl = XNEW (struct prefix_list);
2450 pl->prefix = prefix;
2451 pl->require_machine_suffix = require_machine_suffix;
2452 pl->priority = priority;
2453 pl->os_multilib = os_multilib;
2455 /* Insert after PREV. */
2460 /* Same as add_prefix, but prepending target_system_root to prefix. */
2461 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2463 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2464 const char *component,
2465 /* enum prefix_priority */ int priority,
2466 int require_machine_suffix, int os_multilib)
2468 if (!IS_ABSOLUTE_PATH (prefix))
2469 fatal_error ("system path %qs is not absolute", prefix);
2471 if (target_system_root)
2473 char *sysroot_no_trailing_dir_separator = xstrdup (target_system_root);
2474 size_t sysroot_len = strlen (target_system_root);
2477 && target_system_root[sysroot_len - 1] == DIR_SEPARATOR)
2478 sysroot_no_trailing_dir_separator[sysroot_len - 1] = '\0';
2480 if (target_sysroot_suffix)
2481 prefix = concat (target_sysroot_suffix, prefix, NULL);
2482 prefix = concat (sysroot_no_trailing_dir_separator, prefix, NULL);
2483 free (sysroot_no_trailing_dir_separator);
2485 /* We have to override this because GCC's notion of sysroot
2486 moves along with GCC. */
2490 add_prefix (pprefix, prefix, component, priority,
2491 require_machine_suffix, os_multilib);
2494 /* Execute the command specified by the arguments on the current line of spec.
2495 When using pipes, this includes several piped-together commands
2496 with `|' between them.
2498 Return 0 if successful, -1 if failed. */
2504 int n_commands; /* # of command. */
2506 struct pex_obj *pex;
2509 const char *prog; /* program name. */
2510 const char **argv; /* vector of args. */
2514 struct command *commands; /* each command buffer with above info. */
2516 gcc_assert (!processing_spec_function);
2520 string = find_a_file (&exec_prefixes,
2521 VEC_index (const_char_p, argbuf, 0), X_OK, false);
2523 VEC_replace (const_char_p, argbuf, 0, string);
2524 insert_wrapper (wrapper_string);
2527 /* Count # of piped commands. */
2528 for (n_commands = 1, i = 0; VEC_iterate (const_char_p, argbuf, i, arg); i++)
2529 if (strcmp (arg, "|") == 0)
2532 /* Get storage for each command. */
2533 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2535 /* Split argbuf into its separate piped processes,
2536 and record info about each one.
2537 Also search for the programs that are to be run. */
2539 VEC_safe_push (const_char_p, heap, argbuf, 0);
2541 commands[0].prog = VEC_index (const_char_p, argbuf, 0); /* first command. */
2542 commands[0].argv = VEC_address (const_char_p, argbuf);
2544 if (!wrapper_string)
2546 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false);
2547 commands[0].argv[0] = (string) ? string : commands[0].argv[0];
2550 for (n_commands = 1, i = 0; VEC_iterate (const_char_p, argbuf, i, arg); i++)
2551 if (arg && strcmp (arg, "|") == 0)
2552 { /* each command. */
2553 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2554 fatal_error ("-pipe not supported");
2556 VEC_replace (const_char_p, argbuf, i, 0); /* Termination of
2558 commands[n_commands].prog = VEC_index (const_char_p, argbuf, i + 1);
2559 commands[n_commands].argv
2560 = &(VEC_address (const_char_p, argbuf))[i + 1];
2561 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2564 commands[n_commands].argv[0] = string;
2568 /* If -v, print what we are about to do, and maybe query. */
2572 /* For help listings, put a blank line between sub-processes. */
2573 if (print_help_list)
2574 fputc ('\n', stderr);
2576 /* Print each piped command as a separate line. */
2577 for (i = 0; i < n_commands; i++)
2579 const char *const *j;
2581 if (verbose_only_flag)
2583 for (j = commands[i].argv; *j; j++)
2586 for (p = *j; *p; ++p)
2587 if (!ISALNUM ((unsigned char) *p)
2588 && *p != '_' && *p != '/' && *p != '-' && *p != '.')
2592 fprintf (stderr, " \"");
2593 for (p = *j; *p; ++p)
2595 if (*p == '"' || *p == '\\' || *p == '$')
2596 fputc ('\\', stderr);
2599 fputc ('"', stderr);
2601 /* If it's empty, print "". */
2603 fprintf (stderr, " \"\"");
2605 fprintf (stderr, " %s", *j);
2609 for (j = commands[i].argv; *j; j++)
2610 /* If it's empty, print "". */
2612 fprintf (stderr, " \"\"");
2614 fprintf (stderr, " %s", *j);
2616 /* Print a pipe symbol after all but the last command. */
2617 if (i + 1 != n_commands)
2618 fprintf (stderr, " |");
2619 fprintf (stderr, "\n");
2622 if (verbose_only_flag != 0)
2624 /* verbose_only_flag should act as if the spec was
2625 executed, so increment execution_count before
2626 returning. This prevents spurious warnings about
2627 unused linker input files, etc. */
2632 fnotice (stderr, "\nGo ahead? (y or n) ");
2636 while (getchar () != '\n')
2639 if (i != 'y' && i != 'Y')
2644 #ifdef ENABLE_VALGRIND_CHECKING
2645 /* Run the each command through valgrind. To simplify prepending the
2646 path to valgrind and the option "-q" (for quiet operation unless
2647 something triggers), we allocate a separate argv array. */
2649 for (i = 0; i < n_commands; i++)
2655 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2658 argv = XALLOCAVEC (const char *, argc + 3);
2660 argv[0] = VALGRIND_PATH;
2662 for (j = 2; j < argc + 2; j++)
2663 argv[j] = commands[i].argv[j - 2];
2666 commands[i].argv = argv;
2667 commands[i].prog = argv[0];
2671 /* Run each piped subprocess. */
2673 pex = pex_init (PEX_USE_PIPES | ((report_times || report_times_to_file)
2674 ? PEX_RECORD_TIMES : 0),
2675 progname, temp_filename);
2677 fatal_error ("pex_init failed: %m");
2679 for (i = 0; i < n_commands; i++)
2683 const char *string = commands[i].argv[0];
2685 errmsg = pex_run (pex,
2686 ((i + 1 == n_commands ? PEX_LAST : 0)
2687 | (string == commands[i].prog ? PEX_SEARCH : 0)),
2688 string, CONST_CAST (char **, commands[i].argv),
2693 fatal_error (errmsg);
2697 pfatal_with_name (errmsg);
2701 if (string != commands[i].prog)
2702 free (CONST_CAST (char *, string));
2707 /* Wait for all the subprocesses to finish. */
2711 struct pex_time *times = NULL;
2714 statuses = (int *) alloca (n_commands * sizeof (int));
2715 if (!pex_get_status (pex, n_commands, statuses))
2716 fatal_error ("failed to get exit status: %m");
2718 if (report_times || report_times_to_file)
2720 times = (struct pex_time *) alloca (n_commands * sizeof (struct pex_time));
2721 if (!pex_get_times (pex, n_commands, times))
2722 fatal_error ("failed to get process times: %m");
2727 for (i = 0; i < n_commands; ++i)
2729 int status = statuses[i];
2731 if (WIFSIGNALED (status))
2734 /* SIGPIPE is a special case. It happens in -pipe mode
2735 when the compiler dies before the preprocessor is done,
2736 or the assembler dies before the compiler is done.
2737 There's generally been an error already, and this is
2738 just fallout. So don't generate another error unless
2739 we would otherwise have succeeded. */
2740 if (WTERMSIG (status) == SIGPIPE
2741 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2748 internal_error ("%s (program %s)",
2749 strsignal (WTERMSIG (status)), commands[i].prog);
2751 else if (WIFEXITED (status)
2752 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2754 if (WEXITSTATUS (status) > greatest_status)
2755 greatest_status = WEXITSTATUS (status);
2759 if (report_times || report_times_to_file)
2761 struct pex_time *pt = ×[i];
2764 ut = ((double) pt->user_seconds
2765 + (double) pt->user_microseconds / 1.0e6);
2766 st = ((double) pt->system_seconds
2767 + (double) pt->system_microseconds / 1.0e6);
2772 fnotice (stderr, "# %s %.2f %.2f\n",
2773 commands[i].prog, ut, st);
2775 if (report_times_to_file)
2778 const char *const *j;
2780 fprintf (report_times_to_file, "%g %g", ut, st);
2782 for (j = &commands[i].prog; *j; j = &commands[i].argv[++c])
2785 for (p = *j; *p; ++p)
2786 if (*p == '"' || *p == '\\' || *p == '$'
2792 fprintf (report_times_to_file, " \"");
2793 for (p = *j; *p; ++p)
2795 if (*p == '"' || *p == '\\' || *p == '$')
2796 fputc ('\\', report_times_to_file);
2797 fputc (*p, report_times_to_file);
2799 fputc ('"', report_times_to_file);
2802 fprintf (report_times_to_file, " %s", *j);
2805 fputc ('\n', report_times_to_file);
2815 /* Find all the switches given to us
2816 and make a vector describing them.
2817 The elements of the vector are strings, one per switch given.
2818 If a switch uses following arguments, then the `part1' field
2819 is the switch itself and the `args' field
2820 is a null-terminated vector containing the following arguments.
2821 Bits in the `live_cond' field are:
2822 SWITCH_LIVE to indicate this switch is true in a conditional spec.
2823 SWITCH_FALSE to indicate this switch is overridden by a later switch.
2824 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
2825 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
2826 in all do_spec calls afterwards. Used for %<S from self specs.
2827 The `validated' field is nonzero if any spec has looked at this switch;
2828 if it remains zero at the end of the run, it must be meaningless. */
2830 #define SWITCH_LIVE (1 << 0)
2831 #define SWITCH_FALSE (1 << 1)
2832 #define SWITCH_IGNORE (1 << 2)
2833 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
2834 #define SWITCH_KEEP_FOR_GCC (1 << 4)
2840 unsigned int live_cond;
2841 unsigned char validated;
2842 unsigned char ordering;
2845 static struct switchstr *switches;
2847 static int n_switches;
2849 static int n_switches_alloc;
2851 /* Set to zero if -fcompare-debug is disabled, positive if it's
2852 enabled and we're running the first compilation, negative if it's
2853 enabled and we're running the second compilation. For most of the
2854 time, it's in the range -1..1, but it can be temporarily set to 2
2855 or 3 to indicate that the -fcompare-debug flags didn't come from
2856 the command-line, but rather from the GCC_COMPARE_DEBUG environment
2857 variable, until a synthesized -fcompare-debug flag is added to the
2861 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
2862 int compare_debug_second;
2864 /* Set to the flags that should be passed to the second compilation in
2865 a -fcompare-debug compilation. */
2866 const char *compare_debug_opt;
2868 static struct switchstr *switches_debug_check[2];
2870 static int n_switches_debug_check[2];
2872 static int n_switches_alloc_debug_check[2];
2874 static char *debug_check_temp_file[2];
2876 /* Language is one of three things:
2878 1) The name of a real programming language.
2879 2) NULL, indicating that no one has figured out
2881 3) '*', indicating that the file should be passed
2886 const char *language;
2887 struct compiler *incompiler;
2892 /* Also a vector of input files specified. */
2894 static struct infile *infiles;
2898 static int n_infiles_alloc;
2900 /* True if multiple input files are being compiled to a single
2903 static bool combine_inputs;
2905 /* This counts the number of libraries added by lang_specific_driver, so that
2906 we can tell if there were any user supplied any files or libraries. */
2908 static int added_libraries;
2910 /* And a vector of corresponding output files is made up later. */
2912 const char **outfiles;
2914 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2916 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2917 is true if we should look for an executable suffix. DO_OBJ
2918 is true if we should look for an object suffix. */
2921 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
2922 int do_obj ATTRIBUTE_UNUSED)
2924 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2932 len = strlen (name);
2934 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2935 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2936 if (do_obj && len > 2
2937 && name[len - 2] == '.'
2938 && name[len - 1] == 'o')
2940 obstack_grow (&obstack, name, len - 2);
2941 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2942 name = XOBFINISH (&obstack, const char *);
2946 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2947 /* If there is no filetype, make it the executable suffix (which includes
2948 the "."). But don't get confused if we have just "-o". */
2949 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
2952 for (i = len - 1; i >= 0; i--)
2953 if (IS_DIR_SEPARATOR (name[i]))
2956 for (i++; i < len; i++)
2960 obstack_grow (&obstack, name, len);
2961 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
2962 strlen (TARGET_EXECUTABLE_SUFFIX));
2963 name = XOBFINISH (&obstack, const char *);
2970 /* Display the command line switches accepted by gcc. */
2974 printf (_("Usage: %s [options] file...\n"), progname);
2975 fputs (_("Options:\n"), stdout);
2977 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
2978 fputs (_(" --help Display this information\n"), stdout);
2979 fputs (_(" --target-help Display target specific command line options\n"), stdout);
2980 fputs (_(" --help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumented}}[,...]\n"), stdout);
2981 fputs (_(" Display specific types of command line options\n"), stdout);
2983 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
2984 fputs (_(" --version Display compiler version information\n"), stdout);
2985 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
2986 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
2987 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
2988 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
2989 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
2990 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
2991 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
2993 -print-multiarch Display the target's normalized GNU triplet, used as\n\
2994 a component in the library path\n"), stdout);
2995 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
2997 -print-multi-lib Display the mapping between command line options and\n\
2998 multiple library search directories\n"), stdout);
2999 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
3000 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout);
3001 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout);
3002 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3003 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3004 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3005 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
3006 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
3007 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3008 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3009 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout);
3011 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
3012 prefixes to other gcc components\n"), stdout);
3013 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3014 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3015 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3016 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3018 --sysroot=<directory> Use <directory> as the root directory for headers\n\
3019 and libraries\n"), stdout);
3020 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3021 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3022 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3023 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3024 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3025 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3026 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3027 fputs (_(" -pie Create a position independent executable\n"), stdout);
3028 fputs (_(" -shared Create a shared library\n"), stdout);
3030 -x <language> Specify the language of the following input files\n\
3031 Permissible languages include: c c++ assembler none\n\
3032 'none' means revert to the default behavior of\n\
3033 guessing the language based on the file's extension\n\
3037 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3038 passed on to the various sub-processes invoked by %s. In order to pass\n\
3039 other options on to these processes the -W<letter> options must be used.\n\
3042 /* The rest of the options are displayed by invocations of the various
3047 add_preprocessor_option (const char *option, int len)
3049 VEC_safe_push (char_p, heap, preprocessor_options,
3050 save_string (option, len));
3054 add_assembler_option (const char *option, int len)
3056 VEC_safe_push (char_p, heap, assembler_options, save_string (option, len));
3060 add_linker_option (const char *option, int len)
3062 VEC_safe_push (char_p, heap, linker_options, save_string (option, len));
3065 /* Allocate space for an input file in infiles. */
3070 if (n_infiles_alloc == 0)
3072 n_infiles_alloc = 16;
3073 infiles = XNEWVEC (struct infile, n_infiles_alloc);
3075 else if (n_infiles_alloc == n_infiles)
3077 n_infiles_alloc *= 2;
3078 infiles = XRESIZEVEC (struct infile, infiles, n_infiles_alloc);
3082 /* Store an input file with the given NAME and LANGUAGE in
3086 add_infile (const char *name, const char *language)
3089 infiles[n_infiles].name = name;
3090 infiles[n_infiles++].language = language;
3093 /* Allocate space for a switch in switches. */
3098 if (n_switches_alloc == 0)
3100 n_switches_alloc = 16;
3101 switches = XNEWVEC (struct switchstr, n_switches_alloc);
3103 else if (n_switches_alloc == n_switches)
3105 n_switches_alloc *= 2;
3106 switches = XRESIZEVEC (struct switchstr, switches, n_switches_alloc);
3110 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3111 as validated if VALIDATED. */
3114 save_switch (const char *opt, size_t n_args, const char *const *args,
3118 switches[n_switches].part1 = opt + 1;
3120 switches[n_switches].args = 0;
3123 switches[n_switches].args = XNEWVEC (const char *, n_args + 1);
3124 memcpy (switches[n_switches].args, args, n_args * sizeof (const char *));
3125 switches[n_switches].args[n_args] = NULL;
3128 switches[n_switches].live_cond = 0;
3129 switches[n_switches].validated = validated;
3130 switches[n_switches].ordering = 0;
3134 /* Handle an option DECODED that is unknown to the option-processing
3138 driver_unknown_option_callback (const struct cl_decoded_option *decoded)
3140 const char *opt = decoded->arg;
3141 if (opt[1] == 'W' && opt[2] == 'n' && opt[3] == 'o' && opt[4] == '-'
3142 && !(decoded->errors & CL_ERR_NEGATIVE))
3144 /* Leave unknown -Wno-* options for the compiler proper, to be
3145 diagnosed only if there are warnings. */
3146 save_switch (decoded->canonical_option[0],
3147 decoded->canonical_option_num_elements - 1,
3148 &decoded->canonical_option[1], false);
3155 /* Handle an option DECODED that is not marked as CL_DRIVER.
3156 LANG_MASK will always be CL_DRIVER. */
3159 driver_wrong_lang_callback (const struct cl_decoded_option *decoded,
3160 unsigned int lang_mask ATTRIBUTE_UNUSED)
3162 /* At this point, non-driver options are accepted (and expected to
3163 be passed down by specs) unless marked to be rejected by the
3164 driver. Options to be rejected by the driver but accepted by the
3165 compilers proper are treated just like completely unknown
3167 const struct cl_option *option = &cl_options[decoded->opt_index];
3169 if (option->cl_reject_driver)
3170 error ("unrecognized command line option %qs",
3171 decoded->orig_option_with_args_text);
3173 save_switch (decoded->canonical_option[0],
3174 decoded->canonical_option_num_elements - 1,
3175 &decoded->canonical_option[1], false);
3178 static const char *spec_lang = 0;
3179 static int last_language_n_infiles;
3181 /* Handle a driver option; arguments and return value as for
3185 driver_handle_option (struct gcc_options *opts,
3186 struct gcc_options *opts_set,
3187 const struct cl_decoded_option *decoded,
3188 unsigned int lang_mask ATTRIBUTE_UNUSED, int kind,
3190 const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED,
3191 diagnostic_context *dc)
3193 size_t opt_index = decoded->opt_index;
3194 const char *arg = decoded->arg;
3195 const char *compare_debug_replacement_opt;
3196 int value = decoded->value;
3197 bool validated = false;
3198 bool do_save = true;
3200 gcc_assert (opts == &global_options);
3201 gcc_assert (opts_set == &global_options_set);
3202 gcc_assert (kind == DK_UNSPECIFIED);
3203 gcc_assert (loc == UNKNOWN_LOCATION);
3204 gcc_assert (dc == global_dc);
3210 struct spec_list *sl;
3212 for (sl = specs; sl; sl = sl->next)
3213 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3214 if (link_command_spec)
3215 printf ("*link_command:\n%s\n\n", link_command_spec);
3219 case OPT_dumpversion:
3220 printf ("%s\n", spec_version);
3223 case OPT_dumpmachine:
3224 printf ("%s\n", spec_machine);
3230 /* CPP driver cannot obtain switch from cc1_options. */
3232 add_preprocessor_option ("--version", strlen ("--version"));
3233 add_assembler_option ("--version", strlen ("--version"));
3234 add_linker_option ("--version", strlen ("--version"));
3238 print_help_list = 1;
3240 /* CPP driver cannot obtain switch from cc1_options. */
3242 add_preprocessor_option ("--help", 6);
3243 add_assembler_option ("--help", 6);
3244 add_linker_option ("--help", 6);
3248 print_subprocess_help = 2;
3251 case OPT__target_help:
3252 print_subprocess_help = 1;
3254 /* CPP driver cannot obtain switch from cc1_options. */
3256 add_preprocessor_option ("--target-help", 13);
3257 add_assembler_option ("--target-help", 13);
3258 add_linker_option ("--target-help", 13);
3261 case OPT_pass_exit_codes:
3262 case OPT_print_search_dirs:
3263 case OPT_print_file_name_:
3264 case OPT_print_prog_name_:
3265 case OPT_print_multi_lib:
3266 case OPT_print_multi_directory:
3267 case OPT_print_sysroot:
3268 case OPT_print_multi_os_directory:
3269 case OPT_print_multiarch:
3270 case OPT_print_sysroot_headers_suffix:
3273 /* These options set the variables specified in common.opt
3274 automatically, and do not need to be saved for spec
3279 case OPT_print_libgcc_file_name:
3280 print_file_name = "libgcc.a";
3284 case OPT_fcompare_debug_second:
3285 compare_debug_second = 1;
3288 case OPT_fcompare_debug:
3292 compare_debug_replacement_opt = "-fcompare-debug=";
3294 goto compare_debug_with_arg;
3297 compare_debug_replacement_opt = "-fcompare-debug=-gtoggle";
3299 goto compare_debug_with_arg;
3306 case OPT_fcompare_debug_:
3307 compare_debug_replacement_opt = decoded->canonical_option[0];
3308 compare_debug_with_arg:
3309 gcc_assert (decoded->canonical_option_num_elements == 1);
3310 gcc_assert (arg != NULL);
3315 if (compare_debug < 0)
3316 compare_debug_opt = NULL;
3318 compare_debug_opt = arg;
3319 save_switch (compare_debug_replacement_opt, 0, NULL, validated);
3325 /* Pass the rest of this option to the assembler. */
3327 /* Split the argument at commas. */
3329 for (j = 0; arg[j]; j++)
3332 add_assembler_option (arg + prev, j - prev);
3336 /* Record the part after the last comma. */
3337 add_assembler_option (arg + prev, j - prev);
3345 /* Pass the rest of this option to the preprocessor. */
3347 /* Split the argument at commas. */
3349 for (j = 0; arg[j]; j++)
3352 add_preprocessor_option (arg + prev, j - prev);
3356 /* Record the part after the last comma. */
3357 add_preprocessor_option (arg + prev, j - prev);
3365 /* Split the argument at commas. */
3367 for (j = 0; arg[j]; j++)
3370 add_infile (save_string (arg + prev, j - prev), "*");
3373 /* Record the part after the last comma. */
3374 add_infile (arg + prev, "*");
3380 add_infile (arg, "*");
3384 case OPT_Xpreprocessor:
3385 add_preprocessor_option (arg, strlen (arg));
3389 case OPT_Xassembler:
3390 add_assembler_option (arg, strlen (arg));
3395 /* POSIX allows separation of -l and the lib arg; canonicalize
3396 by concatenating -l with its arg */
3397 add_infile (concat ("-l", arg, NULL), "*");
3402 /* Similarly, canonicalize -L for linkers that may not accept
3403 separate arguments. */
3404 save_switch (concat ("-L", arg, NULL), 0, NULL, validated);
3409 save_switch (concat ("-F", arg, NULL), 0, NULL, validated);
3412 case OPT_save_temps:
3413 save_temps_flag = SAVE_TEMPS_CWD;
3417 case OPT_save_temps_:
3418 if (strcmp (arg, "cwd") == 0)
3419 save_temps_flag = SAVE_TEMPS_CWD;
3420 else if (strcmp (arg, "obj") == 0
3421 || strcmp (arg, "object") == 0)
3422 save_temps_flag = SAVE_TEMPS_OBJ;
3424 fatal_error ("%qs is an unknown -save-temps option",
3425 decoded->orig_option_with_args_text);
3428 case OPT_no_canonical_prefixes:
3429 /* Already handled as a special case, so ignored here. */
3435 /* These options set the variables specified in common.opt
3436 automatically, but do need to be saved for spec
3442 struct user_specs *user = XNEW (struct user_specs);
3444 user->next = (struct user_specs *) 0;
3445 user->filename = arg;
3446 if (user_specs_tail)
3447 user_specs_tail->next = user;
3449 user_specs_head = user;
3450 user_specs_tail = user;
3456 target_system_root = arg;
3457 target_system_root_changed = 1;
3462 if (report_times_to_file)
3463 fclose (report_times_to_file);
3464 report_times_to_file = fopen (arg, "a");
3470 This is similar to -v except that there is no execution
3471 of the commands and the echoed arguments are quoted. It
3472 is intended for use in shell scripts to capture the
3473 driver-generated command line. */
3474 verbose_only_flag++;
3481 size_t len = strlen (arg);
3483 /* Catch the case where the user has forgotten to append a
3484 directory separator to the path. Note, they may be using
3485 -B to add an executable name prefix, eg "i386-elf-", in
3486 order to distinguish between multiple installations of
3487 GCC in the same directory. Hence we must check to see
3488 if appending a directory separator actually makes a
3489 valid directory name. */
3490 if (!IS_DIR_SEPARATOR (arg[len - 1])
3491 && is_directory (arg, false))
3493 char *tmp = XNEWVEC (char, len + 2);
3495 tmp[len] = DIR_SEPARATOR;
3500 add_prefix (&exec_prefixes, arg, NULL,
3501 PREFIX_PRIORITY_B_OPT, 0, 0);
3502 add_prefix (&startfile_prefixes, arg, NULL,
3503 PREFIX_PRIORITY_B_OPT, 0, 0);
3504 add_prefix (&include_prefixes, arg, NULL,
3505 PREFIX_PRIORITY_B_OPT, 0, 0);
3512 if (!strcmp (spec_lang, "none"))
3513 /* Suppress the warning if -xnone comes after the last input
3514 file, because alternate command interfaces like g++ might
3515 find it useful to place -xnone after each input file. */
3518 last_language_n_infiles = n_infiles;
3524 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3525 arg = convert_filename (arg, ! have_c, 0);
3527 /* Save the output name in case -save-temps=obj was used. */
3528 save_temps_prefix = xstrdup (arg);
3529 /* On some systems, ld cannot handle "-o" without a space. So
3530 split the option from its argument. */
3531 save_switch ("-o", 1, &arg, validated);
3534 case OPT_static_libgcc:
3535 case OPT_shared_libgcc:
3536 case OPT_static_libgfortran:
3537 case OPT_static_libstdc__:
3538 /* These are always valid, since gcc.c itself understands the
3539 first two, gfortranspec.c understands -static-libgfortran and
3540 g++spec.c understands -static-libstdc++ */
3545 /* Various driver options need no special processing at this
3546 point, having been handled in a prescan above or being
3547 handled by specs. */
3552 save_switch (decoded->canonical_option[0],
3553 decoded->canonical_option_num_elements - 1,
3554 &decoded->canonical_option[1], validated);
3558 /* Put the driver's standard set of option handlers in *HANDLERS. */
3561 set_option_handlers (struct cl_option_handlers *handlers)
3563 handlers->unknown_option_callback = driver_unknown_option_callback;
3564 handlers->wrong_lang_callback = driver_wrong_lang_callback;
3565 handlers->num_handlers = 3;
3566 handlers->handlers[0].handler = driver_handle_option;
3567 handlers->handlers[0].mask = CL_DRIVER;
3568 handlers->handlers[1].handler = common_handle_option;
3569 handlers->handlers[1].mask = CL_COMMON;
3570 handlers->handlers[2].handler = target_handle_option;
3571 handlers->handlers[2].mask = CL_TARGET;
3574 /* Create the vector `switches' and its contents.
3575 Store its length in `n_switches'. */
3578 process_command (unsigned int decoded_options_count,
3579 struct cl_decoded_option *decoded_options)
3583 const char *tooldir_prefix;
3584 char *(*get_relative_prefix) (const char *, const char *,
3585 const char *) = NULL;
3586 struct cl_option_handlers handlers;
3589 gcc_exec_prefix = getenv ("GCC_EXEC_PREFIX");
3593 added_libraries = 0;
3595 /* Figure compiler version from version string. */
3597 compiler_version = temp1 = xstrdup (version_string);
3599 for (; *temp1; ++temp1)
3608 /* Handle any -no-canonical-prefixes flag early, to assign the function
3609 that builds relative prefixes. This function creates default search
3610 paths that are needed later in normal option handling. */
3612 for (j = 1; j < decoded_options_count; j++)
3614 if (decoded_options[j].opt_index == OPT_no_canonical_prefixes)
3616 get_relative_prefix = make_relative_prefix_ignore_links;
3620 if (! get_relative_prefix)
3621 get_relative_prefix = make_relative_prefix;
3623 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3624 see if we can create it from the pathname specified in
3625 decoded_options[0].arg. */
3627 gcc_libexec_prefix = standard_libexec_prefix;
3629 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3630 if (!gcc_exec_prefix)
3632 gcc_exec_prefix = get_relative_prefix (decoded_options[0].arg,
3633 standard_bindir_prefix,
3634 standard_exec_prefix);
3635 gcc_libexec_prefix = get_relative_prefix (decoded_options[0].arg,
3636 standard_bindir_prefix,
3637 standard_libexec_prefix);
3638 if (gcc_exec_prefix)
3639 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3643 /* make_relative_prefix requires a program name, but
3644 GCC_EXEC_PREFIX is typically a directory name with a trailing
3645 / (which is ignored by make_relative_prefix), so append a
3647 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL);
3648 gcc_libexec_prefix = get_relative_prefix (tmp_prefix,
3649 standard_exec_prefix,
3650 standard_libexec_prefix);
3652 /* The path is unrelocated, so fallback to the original setting. */
3653 if (!gcc_libexec_prefix)
3654 gcc_libexec_prefix = standard_libexec_prefix;
3660 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3661 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3662 or an automatically created GCC_EXEC_PREFIX from
3663 decoded_options[0].arg. */
3665 /* Do language-specific adjustment/addition of flags. */
3666 lang_specific_driver (&decoded_options, &decoded_options_count,
3669 if (gcc_exec_prefix)
3671 int len = strlen (gcc_exec_prefix);
3673 if (len > (int) sizeof ("/lib/gcc/") - 1
3674 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3676 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3677 if (IS_DIR_SEPARATOR (*temp)
3678 && filename_ncmp (temp + 1, "lib", 3) == 0
3679 && IS_DIR_SEPARATOR (temp[4])
3680 && filename_ncmp (temp + 5, "gcc", 3) == 0)
3681 len -= sizeof ("/lib/gcc/") - 1;
3684 set_std_prefix (gcc_exec_prefix, len);
3685 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3686 PREFIX_PRIORITY_LAST, 0, 0);
3687 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3688 PREFIX_PRIORITY_LAST, 0, 0);
3691 /* COMPILER_PATH and LIBRARY_PATH have values
3692 that are lists of directory names with colons. */
3694 temp = getenv ("COMPILER_PATH");
3697 const char *startp, *endp;
3698 char *nstore = (char *) alloca (strlen (temp) + 3);
3700 startp = endp = temp;
3703 if (*endp == PATH_SEPARATOR || *endp == 0)
3705 strncpy (nstore, startp, endp - startp);
3707 strcpy (nstore, concat (".", dir_separator_str, NULL));
3708 else if (!IS_DIR_SEPARATOR (endp[-1]))
3710 nstore[endp - startp] = DIR_SEPARATOR;
3711 nstore[endp - startp + 1] = 0;
3714 nstore[endp - startp] = 0;
3715 add_prefix (&exec_prefixes, nstore, 0,
3716 PREFIX_PRIORITY_LAST, 0, 0);
3717 add_prefix (&include_prefixes, nstore, 0,
3718 PREFIX_PRIORITY_LAST, 0, 0);
3721 endp = startp = endp + 1;
3728 temp = getenv (LIBRARY_PATH_ENV);
3729 if (temp && *cross_compile == '0')
3731 const char *startp, *endp;
3732 char *nstore = (char *) alloca (strlen (temp) + 3);
3734 startp = endp = temp;
3737 if (*endp == PATH_SEPARATOR || *endp == 0)
3739 strncpy (nstore, startp, endp - startp);
3741 strcpy (nstore, concat (".", dir_separator_str, NULL));
3742 else if (!IS_DIR_SEPARATOR (endp[-1]))
3744 nstore[endp - startp] = DIR_SEPARATOR;
3745 nstore[endp - startp + 1] = 0;
3748 nstore[endp - startp] = 0;
3749 add_prefix (&startfile_prefixes, nstore, NULL,
3750 PREFIX_PRIORITY_LAST, 0, 1);
3753 endp = startp = endp + 1;
3760 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3761 temp = getenv ("LPATH");
3762 if (temp && *cross_compile == '0')
3764 const char *startp, *endp;
3765 char *nstore = (char *) alloca (strlen (temp) + 3);
3767 startp = endp = temp;
3770 if (*endp == PATH_SEPARATOR || *endp == 0)
3772 strncpy (nstore, startp, endp - startp);
3774 strcpy (nstore, concat (".", dir_separator_str, NULL));
3775 else if (!IS_DIR_SEPARATOR (endp[-1]))
3777 nstore[endp - startp] = DIR_SEPARATOR;
3778 nstore[endp - startp + 1] = 0;
3781 nstore[endp - startp] = 0;
3782 add_prefix (&startfile_prefixes, nstore, NULL,
3783 PREFIX_PRIORITY_LAST, 0, 1);
3786 endp = startp = endp + 1;
3793 /* Process the options and store input files and switches in their
3796 last_language_n_infiles = -1;
3798 set_option_handlers (&handlers);
3800 for (j = 1; j < decoded_options_count; j++)
3802 switch (decoded_options[j].opt_index)
3814 for (j = 1; j < decoded_options_count; j++)
3816 if (decoded_options[j].opt_index == OPT_SPECIAL_input_file)
3818 const char *arg = decoded_options[j].arg;
3819 const char *p = strrchr (arg, '@');
3823 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3824 arg = convert_filename (arg, 0, access (arg, F_OK));
3826 /* For LTO static archive support we handle input file
3827 specifications that are composed of a filename and
3828 an offset like FNAME@OFFSET. */
3831 && sscanf (p, "@%li%n", &offset, &consumed) >= 1
3832 && strlen (p) == (unsigned int)consumed)
3834 fname = (char *)xmalloc (p - arg + 1);
3835 memcpy (fname, arg, p - arg);
3836 fname[p - arg] = '\0';
3837 /* Only accept non-stdin and existing FNAME parts, otherwise
3838 try with the full name. */
3839 if (strcmp (fname, "-") == 0 || access (fname, F_OK) < 0)
3842 fname = xstrdup (arg);
3846 fname = xstrdup (arg);
3848 if (strcmp (fname, "-") != 0 && access (fname, F_OK) < 0)
3849 perror_with_name (fname);
3851 add_infile (arg, spec_lang);
3857 read_cmdline_option (&global_options, &global_options_set,
3858 decoded_options + j, UNKNOWN_LOCATION,
3859 CL_DRIVER, &handlers, global_dc);
3862 /* If -save-temps=obj and -o name, create the prefix to use for %b.
3863 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
3864 if (save_temps_flag == SAVE_TEMPS_OBJ && save_temps_prefix != NULL)
3866 save_temps_length = strlen (save_temps_prefix);
3867 temp = strrchr (lbasename (save_temps_prefix), '.');
3870 save_temps_length -= strlen (temp);
3871 save_temps_prefix[save_temps_length] = '\0';
3875 else if (save_temps_prefix != NULL)
3877 free (save_temps_prefix);
3878 save_temps_prefix = NULL;
3881 if (save_temps_flag && use_pipes)
3883 /* -save-temps overrides -pipe, so that temp files are produced */
3884 if (save_temps_flag)
3885 warning (0, "-pipe ignored because -save-temps specified");
3891 const char *gcd = getenv ("GCC_COMPARE_DEBUG");
3893 if (gcd && gcd[0] == '-')
3896 compare_debug_opt = gcd;
3898 else if (gcd && *gcd && strcmp (gcd, "0"))
3901 compare_debug_opt = "-gtoggle";
3904 else if (compare_debug < 0)
3907 gcc_assert (!compare_debug_opt);
3910 /* Set up the search paths. We add directories that we expect to
3911 contain GNU Toolchain components before directories specified by
3912 the machine description so that we will find GNU components (like
3913 the GNU assembler) before those of the host system. */
3915 /* If we don't know where the toolchain has been installed, use the
3916 configured-in locations. */
3917 if (!gcc_exec_prefix)
3920 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
3921 PREFIX_PRIORITY_LAST, 1, 0);
3922 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
3923 PREFIX_PRIORITY_LAST, 2, 0);
3924 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3925 PREFIX_PRIORITY_LAST, 2, 0);
3927 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3928 PREFIX_PRIORITY_LAST, 1, 0);
3931 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix));
3932 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3933 dir_separator_str, NULL);
3935 /* Look for tools relative to the location from which the driver is
3936 running, or, if that is not available, the configured prefix. */
3938 = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
3939 spec_machine, dir_separator_str,
3940 spec_version, dir_separator_str, tooldir_prefix, NULL);
3942 add_prefix (&exec_prefixes,
3943 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3944 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0);
3945 add_prefix (&startfile_prefixes,
3946 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3947 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1);
3949 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
3950 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
3951 then consider it to relocate with the rest of the GCC installation
3952 if GCC_EXEC_PREFIX is set.
3953 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
3954 if (target_system_root && !target_system_root_changed && gcc_exec_prefix)
3956 char *tmp_prefix = get_relative_prefix (decoded_options[0].arg,
3957 standard_bindir_prefix,
3958 target_system_root);
3959 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
3961 target_system_root = tmp_prefix;
3962 target_system_root_changed = 1;
3967 /* More prefixes are enabled in main, after we read the specs file
3968 and determine whether this is cross-compilation or not. */
3970 if (n_infiles == last_language_n_infiles && spec_lang != 0)
3971 warning (0, "%<-x %s%> after last input file has no effect", spec_lang);
3973 if (compare_debug == 2 || compare_debug == 3)
3976 switches[n_switches].part1 = concat ("fcompare-debug=",
3979 switches[n_switches].args = 0;
3980 switches[n_switches].live_cond = 0;
3981 switches[n_switches].validated = 0;
3982 switches[n_switches].ordering = 0;
3987 /* Ensure we only invoke each subprocess once. */
3988 if (print_subprocess_help || print_help_list || print_version)
3992 /* Create a dummy input file, so that we can pass
3993 the help option on to the various sub-processes. */
3994 add_infile ("help-dummy", "c");
3998 switches[n_switches].part1 = 0;
4000 infiles[n_infiles].name = 0;
4003 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4004 and place that in the environment. */
4007 set_collect_gcc_options (void)
4012 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4014 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4015 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4018 for (i = 0; (int) i < n_switches; i++)
4020 const char *const *args;
4023 obstack_grow (&collect_obstack, " ", 1);
4027 /* Ignore elided switches. */
4028 if ((switches[i].live_cond
4029 & (SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC))
4033 obstack_grow (&collect_obstack, "'-", 2);
4034 q = switches[i].part1;
4035 while ((p = strchr (q, '\'')))
4037 obstack_grow (&collect_obstack, q, p - q);
4038 obstack_grow (&collect_obstack, "'\\''", 4);
4041 obstack_grow (&collect_obstack, q, strlen (q));
4042 obstack_grow (&collect_obstack, "'", 1);
4044 for (args = switches[i].args; args && *args; args++)
4046 obstack_grow (&collect_obstack, " '", 2);
4048 while ((p = strchr (q, '\'')))
4050 obstack_grow (&collect_obstack, q, p - q);
4051 obstack_grow (&collect_obstack, "'\\''", 4);
4054 obstack_grow (&collect_obstack, q, strlen (q));
4055 obstack_grow (&collect_obstack, "'", 1);
4058 obstack_grow (&collect_obstack, "\0", 1);
4059 xputenv (XOBFINISH (&collect_obstack, char *));
4062 /* Process a spec string, accumulating and running commands. */
4064 /* These variables describe the input file name.
4065 input_file_number is the index on outfiles of this file,
4066 so that the output file name can be stored for later use by %o.
4067 input_basename is the start of the part of the input file
4068 sans all directory names, and basename_length is the number
4069 of characters starting there excluding the suffix .c or whatever. */
4071 static const char *gcc_input_filename;
4072 static int input_file_number;
4073 size_t input_filename_length;
4074 static int basename_length;
4075 static int suffixed_basename_length;
4076 static const char *input_basename;
4077 static const char *input_suffix;
4078 #ifndef HOST_LACKS_INODE_NUMBERS
4079 static struct stat input_stat;
4081 static int input_stat_set;
4083 /* The compiler used to process the current input file. */
4084 static struct compiler *input_file_compiler;
4086 /* These are variables used within do_spec and do_spec_1. */
4088 /* Nonzero if an arg has been started and not yet terminated
4089 (with space, tab or newline). */
4090 static int arg_going;
4092 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4093 is a temporary file name. */
4094 static int delete_this_arg;
4096 /* Nonzero means %w has been seen; the next arg to be terminated
4097 is the output file name of this compilation. */
4098 static int this_is_output_file;
4100 /* Nonzero means %s has been seen; the next arg to be terminated
4101 is the name of a library file and we should try the standard
4102 search dirs for it. */
4103 static int this_is_library_file;
4105 /* Nonzero means %T has been seen; the next arg to be terminated
4106 is the name of a linker script and we should try all of the
4107 standard search dirs for it. If it is found insert a --script
4108 command line switch and then substitute the full path in place,
4109 otherwise generate an error message. */
4110 static int this_is_linker_script;
4112 /* Nonzero means that the input of this command is coming from a pipe. */
4113 static int input_from_pipe;
4115 /* Nonnull means substitute this for any suffix when outputting a switches
4117 static const char *suffix_subst;
4119 /* If there is an argument being accumulated, terminate it and store it. */
4122 end_going_arg (void)
4128 obstack_1grow (&obstack, 0);
4129 string = XOBFINISH (&obstack, const char *);
4130 if (this_is_library_file)
4131 string = find_file (string);
4132 if (this_is_linker_script)
4134 char * full_script_path = find_a_file (&startfile_prefixes, string, R_OK, true);
4136 if (full_script_path == NULL)
4138 error ("unable to locate default linker script %qs in the library search paths", string);
4139 /* Script was not found on search path. */
4142 store_arg ("--script", false, false);
4143 string = full_script_path;
4145 store_arg (string, delete_this_arg, this_is_output_file);
4146 if (this_is_output_file)
4147 outfiles[input_file_number] = string;
4153 /* Parse the WRAPPER string which is a comma separated list of the command line
4154 and insert them into the beginning of argbuf. */
4157 insert_wrapper (const char *wrapper)
4161 char *buf = xstrdup (wrapper);
4163 unsigned int old_length = VEC_length (const_char_p, argbuf);
4171 while ((p = strchr (p, ',')) != NULL);
4173 VEC_safe_grow (const_char_p, heap, argbuf, old_length + n);
4174 memmove (VEC_address (const_char_p, argbuf) + n,
4175 VEC_address (const_char_p, argbuf),
4176 old_length * sizeof (const_char_p));
4187 VEC_replace (const_char_p, argbuf, i, p);
4190 while ((p = strchr (p, ',')) != NULL);
4191 gcc_assert (i == n);
4194 /* Process the spec SPEC and run the commands specified therein.
4195 Returns 0 if the spec is successfully processed; -1 if failed. */
4198 do_spec (const char *spec)
4202 value = do_spec_2 (spec);
4204 /* Force out any unfinished command.
4205 If -pipe, this forces out the last command if it ended in `|'. */
4208 if (VEC_length (const_char_p, argbuf) > 0
4209 && !strcmp (VEC_last (const_char_p, argbuf), "|"))
4210 VEC_pop (const_char_p, argbuf);
4212 set_collect_gcc_options ();
4214 if (VEC_length (const_char_p, argbuf) > 0)
4222 do_spec_2 (const char *spec)
4228 delete_this_arg = 0;
4229 this_is_output_file = 0;
4230 this_is_library_file = 0;
4231 this_is_linker_script = 0;
4232 input_from_pipe = 0;
4233 suffix_subst = NULL;
4235 result = do_spec_1 (spec, 0, NULL);
4243 /* Process the given spec string and add any new options to the end
4244 of the switches/n_switches array. */
4247 do_option_spec (const char *name, const char *spec)
4249 unsigned int i, value_count, value_len;
4250 const char *p, *q, *value;
4251 char *tmp_spec, *tmp_spec_p;
4253 if (configure_default_options[0].name == NULL)
4256 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4257 if (strcmp (configure_default_options[i].name, name) == 0)
4259 if (i == ARRAY_SIZE (configure_default_options))
4262 value = configure_default_options[i].value;
4263 value_len = strlen (value);
4265 /* Compute the size of the final spec. */
4268 while ((p = strstr (p, "%(VALUE)")) != NULL)
4274 /* Replace each %(VALUE) by the specified value. */
4275 tmp_spec = (char *) alloca (strlen (spec) + 1
4276 + value_count * (value_len - strlen ("%(VALUE)")));
4277 tmp_spec_p = tmp_spec;
4279 while ((p = strstr (q, "%(VALUE)")) != NULL)
4281 memcpy (tmp_spec_p, q, p - q);
4282 tmp_spec_p = tmp_spec_p + (p - q);
4283 memcpy (tmp_spec_p, value, value_len);
4284 tmp_spec_p += value_len;
4285 q = p + strlen ("%(VALUE)");
4287 strcpy (tmp_spec_p, q);
4289 do_self_spec (tmp_spec);
4292 /* Process the given spec string and add any new options to the end
4293 of the switches/n_switches array. */
4296 do_self_spec (const char *spec)
4301 do_spec_1 (" ", 0, NULL);
4303 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4304 do_self_specs adds the replacements to switches array, so it shouldn't
4305 be processed afterwards. */
4306 for (i = 0; i < n_switches; i++)
4307 if ((switches[i].live_cond & SWITCH_IGNORE))
4308 switches[i].live_cond |= SWITCH_IGNORE_PERMANENTLY;
4310 if (VEC_length (const_char_p, argbuf) > 0)
4312 const char **argbuf_copy;
4313 struct cl_decoded_option *decoded_options;
4314 struct cl_option_handlers handlers;
4315 unsigned int decoded_options_count;
4318 /* Create a copy of argbuf with a dummy argv[0] entry for
4319 decode_cmdline_options_to_array. */
4320 argbuf_copy = XNEWVEC (const char *,
4321 VEC_length (const_char_p, argbuf) + 1);
4322 argbuf_copy[0] = "";
4323 memcpy (argbuf_copy + 1, VEC_address (const_char_p, argbuf),
4324 VEC_length (const_char_p, argbuf) * sizeof (const char *));
4326 decode_cmdline_options_to_array (VEC_length (const_char_p, argbuf) + 1,
4328 CL_DRIVER, &decoded_options,
4329 &decoded_options_count);
4331 set_option_handlers (&handlers);
4333 for (j = 1; j < decoded_options_count; j++)
4335 switch (decoded_options[j].opt_index)
4337 case OPT_SPECIAL_input_file:
4338 /* Specs should only generate options, not input
4340 if (strcmp (decoded_options[j].arg, "-") != 0)
4341 fatal_error ("switch %qs does not start with %<-%>",
4342 decoded_options[j].arg);
4344 fatal_error ("spec-generated switch is just %<-%>");
4347 case OPT_fcompare_debug_second:
4348 case OPT_fcompare_debug:
4349 case OPT_fcompare_debug_:
4351 /* Avoid duplicate processing of some options from
4352 compare-debug specs; just save them here. */
4353 save_switch (decoded_options[j].canonical_option[0],
4354 (decoded_options[j].canonical_option_num_elements
4356 &decoded_options[j].canonical_option[1], false);
4360 read_cmdline_option (&global_options, &global_options_set,
4361 decoded_options + j, UNKNOWN_LOCATION,
4362 CL_DRIVER, &handlers, global_dc);
4368 switches[n_switches].part1 = 0;
4372 /* Callback for processing %D and %I specs. */
4374 struct spec_path_info {
4379 bool separate_options;
4383 spec_path (char *path, void *data)
4385 struct spec_path_info *info = (struct spec_path_info *) data;
4389 if (info->omit_relative && !IS_ABSOLUTE_PATH (path))
4392 if (info->append_len != 0)
4394 len = strlen (path);
4395 memcpy (path + len, info->append, info->append_len + 1);
4398 if (!is_directory (path, true))
4401 do_spec_1 (info->option, 1, NULL);
4402 if (info->separate_options)
4403 do_spec_1 (" ", 0, NULL);
4405 if (info->append_len == 0)
4407 len = strlen (path);
4408 save = path[len - 1];
4409 if (IS_DIR_SEPARATOR (path[len - 1]))
4410 path[len - 1] = '\0';
4413 do_spec_1 (path, 1, NULL);
4414 do_spec_1 (" ", 0, NULL);
4416 /* Must not damage the original path. */
4417 if (info->append_len == 0)
4418 path[len - 1] = save;
4423 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4427 create_at_file (char **argv)
4429 char *temp_file = make_temp_file ("");
4430 char *at_argument = concat ("@", temp_file, NULL);
4431 FILE *f = fopen (temp_file, "w");
4435 fatal_error ("could not open temporary response file %s",
4438 status = writeargv (argv, f);
4441 fatal_error ("could not write to temporary response file %s",
4444 status = fclose (f);
4447 fatal_error ("could not close temporary response file %s",
4450 store_arg (at_argument, 0, 0);
4452 record_temp_file (temp_file, !save_temps_flag, !save_temps_flag);
4455 /* True if we should compile INFILE. */
4458 compile_input_file_p (struct infile *infile)
4460 if ((!infile->language) || (infile->language[0] != '*'))
4461 if (infile->incompiler == input_file_compiler)
4466 /* Process each member of VEC as a spec. */
4469 do_specs_vec (VEC(char_p,heap) *vec)
4474 FOR_EACH_VEC_ELT (char_p, vec, ix, opt)
4476 do_spec_1 (opt, 1, NULL);
4477 /* Make each accumulated option a separate argument. */
4478 do_spec_1 (" ", 0, NULL);
4482 /* Process the sub-spec SPEC as a portion of a larger spec.
4483 This is like processing a whole spec except that we do
4484 not initialize at the beginning and we do not supply a
4485 newline by default at the end.
4486 INSWITCH nonzero means don't process %-sequences in SPEC;
4487 in this case, % is treated as an ordinary character.
4488 This is used while substituting switches.
4489 INSWITCH nonzero also causes SPC not to terminate an argument.
4491 Value is zero unless a line was finished
4492 and the command on that line reported an error. */
4495 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4497 const char *p = spec;
4502 /* If it's an empty string argument to a switch, keep it as is. */
4503 if (inswitch && !*p)
4507 /* If substituting a switch, treat all chars like letters.
4508 Otherwise, NL, SPC, TAB and % are special. */
4509 switch (inswitch ? 'a' : c)
4514 if (VEC_length (const_char_p, argbuf) > 0
4515 && !strcmp (VEC_last (const_char_p, argbuf), "|"))
4517 /* A `|' before the newline means use a pipe here,
4518 but only if -pipe was specified.
4519 Otherwise, execute now and don't pass the `|' as an arg. */
4522 input_from_pipe = 1;
4526 VEC_pop (const_char_p, argbuf);
4529 set_collect_gcc_options ();
4531 if (VEC_length (const_char_p, argbuf) > 0)
4537 /* Reinitialize for a new command, and for a new argument. */
4540 delete_this_arg = 0;
4541 this_is_output_file = 0;
4542 this_is_library_file = 0;
4543 this_is_linker_script = 0;
4544 input_from_pipe = 0;
4551 obstack_1grow (&obstack, c);
4559 /* Reinitialize for a new argument. */
4560 delete_this_arg = 0;
4561 this_is_output_file = 0;
4562 this_is_library_file = 0;
4563 this_is_linker_script = 0;
4570 fatal_error ("spec %qs invalid", spec);
4573 if (save_temps_length)
4574 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4576 obstack_grow (&obstack, input_basename, basename_length);
4577 if (compare_debug < 0)
4578 obstack_grow (&obstack, ".gk", 3);
4583 if (save_temps_length)
4584 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4586 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4587 if (compare_debug < 0)
4588 obstack_grow (&obstack, ".gk", 3);
4593 delete_this_arg = 2;
4596 /* Dump out the directories specified with LIBRARY_PATH,
4597 followed by the absolute directories
4598 that we search for startfiles. */
4601 struct spec_path_info info;
4604 info.append_len = 0;
4605 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4606 /* Used on systems which record the specified -L dirs
4607 and use them to search for dynamic linking.
4608 Relative directories always come from -B,
4609 and it is better not to use them for searching
4610 at run time. In particular, stage1 loses. */
4611 info.omit_relative = true;
4613 info.omit_relative = false;
4615 info.separate_options = false;
4617 for_each_path (&startfile_prefixes, true, 0, spec_path, &info);
4622 /* %efoo means report an error with `foo' as error message
4623 and don't execute any more commands for this file. */
4627 while (*p != 0 && *p != '\n')
4629 buf = (char *) alloca (p - q + 1);
4630 strncpy (buf, q, p - q);
4632 error ("%s", _(buf));
4637 /* %nfoo means report a notice with `foo' on stderr. */
4641 while (*p != 0 && *p != '\n')
4643 buf = (char *) alloca (p - q + 1);
4644 strncpy (buf, q, p - q);
4646 inform (0, "%s", _(buf));
4656 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4657 defined, and it is not a directory, and it is
4658 writable, use it. Otherwise, treat this like any
4659 other temporary file. */
4661 if ((!save_temps_flag)
4662 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4663 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4665 obstack_grow (&obstack, HOST_BIT_BUCKET,
4666 strlen (HOST_BIT_BUCKET));
4667 delete_this_arg = 0;
4672 goto create_temp_file;
4676 obstack_1grow (&obstack, '-');
4677 delete_this_arg = 0;
4680 /* consume suffix */
4681 while (*p == '.' || ISALNUM ((unsigned char) *p))
4683 if (p[0] == '%' && p[1] == 'O')
4688 goto create_temp_file;
4692 /* consume suffix */
4693 while (*p == '.' || ISALNUM ((unsigned char) *p))
4695 if (p[0] == '%' && p[1] == 'O')
4700 goto create_temp_file;
4706 struct temp_name *t;
4708 const char *suffix = p;
4709 char *saved_suffix = NULL;
4711 while (*p == '.' || ISALNUM ((unsigned char) *p))
4713 suffix_length = p - suffix;
4714 if (p[0] == '%' && p[1] == 'O')
4717 /* We don't support extra suffix characters after %O. */
4718 if (*p == '.' || ISALNUM ((unsigned char) *p))
4719 fatal_error ("spec %qs has invalid %<%%0%c%>", spec, *p);
4720 if (suffix_length == 0)
4721 suffix = TARGET_OBJECT_SUFFIX;
4725 = XNEWVEC (char, suffix_length
4726 + strlen (TARGET_OBJECT_SUFFIX));
4727 strncpy (saved_suffix, suffix, suffix_length);
4728 strcpy (saved_suffix + suffix_length,
4729 TARGET_OBJECT_SUFFIX);
4731 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4734 if (compare_debug < 0)
4736 suffix = concat (".gk", suffix, NULL);
4740 /* If -save-temps=obj and -o were specified, use that for the
4742 if (save_temps_length)
4745 temp_filename_length
4746 = save_temps_length + suffix_length + 1;
4747 tmp = (char *) alloca (temp_filename_length);
4748 memcpy (tmp, save_temps_prefix, save_temps_length);
4749 memcpy (tmp + save_temps_length, suffix, suffix_length);
4750 tmp[save_temps_length + suffix_length] = '\0';
4751 temp_filename = save_string (tmp,
4752 temp_filename_length + 1);
4753 obstack_grow (&obstack, temp_filename,
4754 temp_filename_length);
4756 delete_this_arg = 0;
4760 /* If the gcc_input_filename has the same suffix specified
4761 for the %g, %u, or %U, and -save-temps is specified,
4762 we could end up using that file as an intermediate
4763 thus clobbering the user's source file (.e.g.,
4764 gcc -save-temps foo.s would clobber foo.s with the
4765 output of cpp0). So check for this condition and
4766 generate a temp file as the intermediate. */
4768 if (save_temps_flag)
4771 temp_filename_length = basename_length + suffix_length + 1;
4772 tmp = (char *) alloca (temp_filename_length);
4773 memcpy (tmp, input_basename, basename_length);
4774 memcpy (tmp + basename_length, suffix, suffix_length);
4775 tmp[basename_length + suffix_length] = '\0';
4776 temp_filename = tmp;
4778 if (filename_cmp (temp_filename, gcc_input_filename) != 0)
4780 #ifndef HOST_LACKS_INODE_NUMBERS
4781 struct stat st_temp;
4783 /* Note, set_input() resets input_stat_set to 0. */
4784 if (input_stat_set == 0)
4786 input_stat_set = stat (gcc_input_filename,
4788 if (input_stat_set >= 0)
4792 /* If we have the stat for the gcc_input_filename
4793 and we can do the stat for the temp_filename
4794 then the they could still refer to the same
4795 file if st_dev/st_ino's are the same. */
4796 if (input_stat_set != 1
4797 || stat (temp_filename, &st_temp) < 0
4798 || input_stat.st_dev != st_temp.st_dev
4799 || input_stat.st_ino != st_temp.st_ino)
4801 /* Just compare canonical pathnames. */
4802 char* input_realname = lrealpath (gcc_input_filename);
4803 char* temp_realname = lrealpath (temp_filename);
4804 bool files_differ = filename_cmp (input_realname, temp_realname);
4805 free (input_realname);
4806 free (temp_realname);
4810 temp_filename = save_string (temp_filename,
4811 temp_filename_length + 1);
4812 obstack_grow (&obstack, temp_filename,
4813 temp_filename_length);
4815 delete_this_arg = 0;
4821 /* See if we already have an association of %g/%u/%U and
4823 for (t = temp_names; t; t = t->next)
4824 if (t->length == suffix_length
4825 && strncmp (t->suffix, suffix, suffix_length) == 0
4826 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
4829 /* Make a new association if needed. %u and %j
4831 if (t == 0 || c == 'u' || c == 'j')
4835 t = XNEW (struct temp_name);
4836 t->next = temp_names;
4839 t->length = suffix_length;
4842 t->suffix = saved_suffix;
4843 saved_suffix = NULL;
4846 t->suffix = save_string (suffix, suffix_length);
4847 t->unique = (c == 'u' || c == 'U' || c == 'j');
4848 temp_filename = make_temp_file (t->suffix);
4849 temp_filename_length = strlen (temp_filename);
4850 t->filename = temp_filename;
4851 t->filename_length = temp_filename_length;
4854 free (saved_suffix);
4856 obstack_grow (&obstack, t->filename, t->filename_length);
4857 delete_this_arg = 1;
4865 if (at_file_supplied)
4867 /* We are going to expand `%i' to `@FILE', where FILE
4868 is a newly-created temporary filename. The filenames
4869 that would usually be expanded in place of %o will be
4870 written to the temporary file. */
4875 for (i = 0; i < n_infiles; i++)
4876 if (compile_input_file_p (&infiles[i]))
4879 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
4881 /* Copy the strings over. */
4882 for (i = 0, j = 0; i < n_infiles; i++)
4883 if (compile_input_file_p (&infiles[i]))
4885 argv[j] = CONST_CAST (char *, infiles[i].name);
4886 infiles[i].compiled = true;
4891 create_at_file (argv);
4894 for (i = 0; (int) i < n_infiles; i++)
4895 if (compile_input_file_p (&infiles[i]))
4897 store_arg (infiles[i].name, 0, 0);
4898 infiles[i].compiled = true;
4903 obstack_grow (&obstack, gcc_input_filename,
4904 input_filename_length);
4911 struct spec_path_info info;
4915 do_spec_1 ("-imultilib", 1, NULL);
4916 /* Make this a separate argument. */
4917 do_spec_1 (" ", 0, NULL);
4918 do_spec_1 (multilib_dir, 1, NULL);
4919 do_spec_1 (" ", 0, NULL);
4924 do_spec_1 ("-imultiarch", 1, NULL);
4925 /* Make this a separate argument. */
4926 do_spec_1 (" ", 0, NULL);
4927 do_spec_1 (multiarch_dir, 1, NULL);
4928 do_spec_1 (" ", 0, NULL);
4931 if (gcc_exec_prefix)
4933 do_spec_1 ("-iprefix", 1, NULL);
4934 /* Make this a separate argument. */
4935 do_spec_1 (" ", 0, NULL);
4936 do_spec_1 (gcc_exec_prefix, 1, NULL);
4937 do_spec_1 (" ", 0, NULL);
4940 if (target_system_root_changed ||
4941 (target_system_root && target_sysroot_hdrs_suffix))
4943 do_spec_1 ("-isysroot", 1, NULL);
4944 /* Make this a separate argument. */
4945 do_spec_1 (" ", 0, NULL);
4946 do_spec_1 (target_system_root, 1, NULL);
4947 if (target_sysroot_hdrs_suffix)
4948 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
4949 do_spec_1 (" ", 0, NULL);
4952 info.option = "-isystem";
4953 info.append = "include";
4954 info.append_len = strlen (info.append);
4955 info.omit_relative = false;
4956 info.separate_options = true;
4958 for_each_path (&include_prefixes, false, info.append_len,
4961 info.append = "include-fixed";
4962 if (*sysroot_hdrs_suffix_spec)
4963 info.append = concat (info.append, dir_separator_str,
4964 multilib_dir, NULL);
4965 info.append_len = strlen (info.append);
4966 for_each_path (&include_prefixes, false, info.append_len,
4973 int max = n_infiles;
4974 max += lang_specific_extra_outfiles;
4976 if (HAVE_GNU_LD && at_file_supplied)
4978 /* We are going to expand `%o' to `@FILE', where FILE
4979 is a newly-created temporary filename. The filenames
4980 that would usually be expanded in place of %o will be
4981 written to the temporary file. */
4986 /* Convert OUTFILES into a form suitable for writeargv. */
4988 /* Determine how many are non-NULL. */
4989 for (n_files = 0, i = 0; i < max; i++)
4990 n_files += outfiles[i] != NULL;
4992 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
4994 /* Copy the strings over. */
4995 for (i = 0, j = 0; i < max; i++)
4998 argv[j] = CONST_CAST (char *, outfiles[i]);
5003 create_at_file (argv);
5006 for (i = 0; i < max; i++)
5008 store_arg (outfiles[i], 0, 0);
5013 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
5018 this_is_library_file = 1;
5022 this_is_linker_script = 1;
5026 outfiles[input_file_number] = NULL;
5030 this_is_output_file = 1;
5035 unsigned int cur_index = VEC_length (const_char_p, argbuf);
5036 /* Handle the {...} following the %W. */
5038 fatal_error ("spec %qs has invalid %<%%W%c%>", spec, *p);
5039 p = handle_braces (p + 1);
5043 /* If any args were output, mark the last one for deletion
5045 if (VEC_length (const_char_p, argbuf) != cur_index)
5046 record_temp_file (VEC_last (const_char_p, argbuf), 0, 1);
5050 /* %x{OPTION} records OPTION for %X to output. */
5058 /* Skip past the option value and make a copy. */
5060 fatal_error ("spec %qs has invalid %<%%x%c%>", spec, *p);
5063 string = save_string (p1 + 1, p - p1 - 2);
5065 /* See if we already recorded this option. */
5066 FOR_EACH_VEC_ELT (char_p, linker_options, ix, opt)
5067 if (! strcmp (string, opt))
5073 /* This option is new; add it. */
5074 add_linker_option (string, strlen (string));
5078 /* Dump out the options accumulated previously using %x. */
5080 do_specs_vec (linker_options);
5083 /* Dump out the options accumulated previously using -Wa,. */
5085 do_specs_vec (assembler_options);
5088 /* Dump out the options accumulated previously using -Wp,. */
5090 do_specs_vec (preprocessor_options);
5093 /* Here are digits and numbers that just process
5094 a certain constant string as a spec. */
5097 value = do_spec_1 (cc1_spec, 0, NULL);
5103 value = do_spec_1 (cc1plus_spec, 0, NULL);
5109 value = do_spec_1 (asm_spec, 0, NULL);
5115 value = do_spec_1 (asm_final_spec, 0, NULL);
5122 const char *const spec
5123 = (input_file_compiler->cpp_spec
5124 ? input_file_compiler->cpp_spec
5126 value = do_spec_1 (spec, 0, NULL);
5133 value = do_spec_1 (endfile_spec, 0, NULL);
5139 value = do_spec_1 (link_spec, 0, NULL);
5145 value = do_spec_1 (lib_spec, 0, NULL);
5151 value = do_spec_1 (libgcc_spec, 0, NULL);
5157 /* We assume there is a directory
5158 separator at the end of this string. */
5159 if (target_system_root)
5161 obstack_grow (&obstack, target_system_root,
5162 strlen (target_system_root));
5163 if (target_sysroot_suffix)
5164 obstack_grow (&obstack, target_sysroot_suffix,
5165 strlen (target_sysroot_suffix));
5170 value = do_spec_1 (startfile_spec, 0, NULL);
5175 /* Here we define characters other than letters and digits. */
5178 p = handle_braces (p);
5184 p = handle_spec_function (p);
5190 obstack_1grow (&obstack, '%');
5197 while (p[len] && p[len] != ' ' && p[len] != '%')
5199 suffix_subst = save_string (p - 1, len + 1);
5204 /* Henceforth ignore the option(s) matching the pattern
5210 int have_wildcard = 0;
5215 switch_option = SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC;
5217 switch_option = SWITCH_IGNORE;
5219 while (p[len] && p[len] != ' ' && p[len] != '\t')
5222 if (p[len-1] == '*')
5225 for (i = 0; i < n_switches; i++)
5226 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5227 && (have_wildcard || switches[i].part1[len] == '\0'))
5229 switches[i].live_cond |= switch_option;
5230 switches[i].validated = 1;
5238 if (soft_matched_part)
5240 if (soft_matched_part[0])
5241 do_spec_1 (soft_matched_part, 1, NULL);
5242 do_spec_1 (" ", 0, NULL);
5245 /* Catch the case where a spec string contains something like
5246 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5247 hand side of the :. */
5248 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5251 /* Process a string found as the value of a spec given by name.
5252 This feature allows individual machine descriptions
5253 to add and use their own specs. */
5256 const char *name = p;
5257 struct spec_list *sl;
5260 /* The string after the S/P is the name of a spec that is to be
5262 while (*p && *p != ')')
5265 /* See if it's in the list. */
5266 for (len = p - name, sl = specs; sl; sl = sl->next)
5267 if (sl->name_len == len && !strncmp (sl->name, name, len))
5269 name = *(sl->ptr_spec);
5271 fnotice (stderr, "Processing spec (%s), which is '%s'\n",
5279 value = do_spec_1 (name, 0, NULL);
5284 /* Discard the closing paren. */
5291 error ("spec failure: unrecognized spec option %qc", c);
5297 /* Backslash: treat next character as ordinary. */
5302 /* Ordinary character: put it into the current argument. */
5303 obstack_1grow (&obstack, c);
5307 /* End of string. If we are processing a spec function, we need to
5308 end any pending argument. */
5309 if (processing_spec_function)
5315 /* Look up a spec function. */
5317 static const struct spec_function *
5318 lookup_spec_function (const char *name)
5320 const struct spec_function *sf;
5322 for (sf = static_spec_functions; sf->name != NULL; sf++)
5323 if (strcmp (sf->name, name) == 0)
5329 /* Evaluate a spec function. */
5332 eval_spec_function (const char *func, const char *args)
5334 const struct spec_function *sf;
5335 const char *funcval;
5337 /* Saved spec processing context. */
5338 VEC(const_char_p,heap) *save_argbuf;
5341 int save_delete_this_arg;
5342 int save_this_is_output_file;
5343 int save_this_is_library_file;
5344 int save_input_from_pipe;
5345 int save_this_is_linker_script;
5346 const char *save_suffix_subst;
5349 sf = lookup_spec_function (func);
5351 fatal_error ("unknown spec function %qs", func);
5353 /* Push the spec processing context. */
5354 save_argbuf = argbuf;
5356 save_arg_going = arg_going;
5357 save_delete_this_arg = delete_this_arg;
5358 save_this_is_output_file = this_is_output_file;
5359 save_this_is_library_file = this_is_library_file;
5360 save_this_is_linker_script = this_is_linker_script;
5361 save_input_from_pipe = input_from_pipe;
5362 save_suffix_subst = suffix_subst;
5364 /* Create a new spec processing context, and build the function
5368 if (do_spec_2 (args) < 0)
5369 fatal_error ("error in args to spec function %qs", func);
5371 /* argbuf_index is an index for the next argument to be inserted, and
5372 so contains the count of the args already inserted. */
5374 funcval = (*sf->func) (VEC_length (const_char_p, argbuf),
5375 VEC_address (const_char_p, argbuf));
5377 /* Pop the spec processing context. */
5378 VEC_free (const_char_p, heap, argbuf);
5379 argbuf = save_argbuf;
5381 arg_going = save_arg_going;
5382 delete_this_arg = save_delete_this_arg;
5383 this_is_output_file = save_this_is_output_file;
5384 this_is_library_file = save_this_is_library_file;
5385 this_is_linker_script = save_this_is_linker_script;
5386 input_from_pipe = save_input_from_pipe;
5387 suffix_subst = save_suffix_subst;
5392 /* Handle a spec function call of the form:
5396 ARGS is processed as a spec in a separate context and split into an
5397 argument vector in the normal fashion. The function returns a string
5398 containing a spec which we then process in the caller's context, or
5399 NULL if no processing is required. */
5402 handle_spec_function (const char *p)
5405 const char *endp, *funcval;
5408 processing_spec_function++;
5410 /* Get the function name. */
5411 for (endp = p; *endp != '\0'; endp++)
5413 if (*endp == '(') /* ) */
5415 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5416 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5417 fatal_error ("malformed spec function name");
5419 if (*endp != '(') /* ) */
5420 fatal_error ("no arguments for spec function");
5421 func = save_string (p, endp - p);
5424 /* Get the arguments. */
5425 for (count = 0; *endp != '\0'; endp++)
5434 else if (*endp == '(') /* ) */
5439 fatal_error ("malformed spec function arguments");
5440 args = save_string (p, endp - p);
5443 /* p now points to just past the end of the spec function expression. */
5445 funcval = eval_spec_function (func, args);
5446 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5452 processing_spec_function--;
5457 /* Inline subroutine of handle_braces. Returns true if the current
5458 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5460 input_suffix_matches (const char *atom, const char *end_atom)
5462 return (input_suffix
5463 && !strncmp (input_suffix, atom, end_atom - atom)
5464 && input_suffix[end_atom - atom] == '\0');
5467 /* Subroutine of handle_braces. Returns true if the current
5468 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5470 input_spec_matches (const char *atom, const char *end_atom)
5472 return (input_file_compiler
5473 && input_file_compiler->suffix
5474 && input_file_compiler->suffix[0] != '\0'
5475 && !strncmp (input_file_compiler->suffix + 1, atom,
5477 && input_file_compiler->suffix[end_atom - atom + 1] == '\0');
5480 /* Subroutine of handle_braces. Returns true if a switch
5481 matching the atom bracketed by ATOM and END_ATOM appeared on the
5484 switch_matches (const char *atom, const char *end_atom, int starred)
5487 int len = end_atom - atom;
5488 int plen = starred ? len : -1;
5490 for (i = 0; i < n_switches; i++)
5491 if (!strncmp (switches[i].part1, atom, len)
5492 && (starred || switches[i].part1[len] == '\0')
5493 && check_live_switch (i, plen))
5496 /* Check if a switch with separated form matching the atom.
5497 We check -D and -U switches. */
5498 else if (switches[i].args != 0)
5500 if ((*switches[i].part1 == 'D' || *switches[i].part1 == 'U')
5501 && *switches[i].part1 == atom[0])
5503 if (!strncmp (switches[i].args[0], &atom[1], len - 1)
5504 && (starred || (switches[i].part1[1] == '\0'
5505 && switches[i].args[0][len - 1] == '\0'))
5506 && check_live_switch (i, (starred ? 1 : -1)))
5514 /* Inline subroutine of handle_braces. Mark all of the switches which
5515 match ATOM (extends to END_ATOM; STARRED indicates whether there
5516 was a star after the atom) for later processing. */
5518 mark_matching_switches (const char *atom, const char *end_atom, int starred)
5521 int len = end_atom - atom;
5522 int plen = starred ? len : -1;
5524 for (i = 0; i < n_switches; i++)
5525 if (!strncmp (switches[i].part1, atom, len)
5526 && (starred || switches[i].part1[len] == '\0')
5527 && check_live_switch (i, plen))
5528 switches[i].ordering = 1;
5531 /* Inline subroutine of handle_braces. Process all the currently
5532 marked switches through give_switch, and clear the marks. */
5534 process_marked_switches (void)
5538 for (i = 0; i < n_switches; i++)
5539 if (switches[i].ordering == 1)
5541 switches[i].ordering = 0;
5546 /* Handle a %{ ... } construct. P points just inside the leading {.
5547 Returns a pointer one past the end of the brace block, or 0
5548 if we call do_spec_1 and that returns -1. */
5551 handle_braces (const char *p)
5553 const char *atom, *end_atom;
5554 const char *d_atom = NULL, *d_end_atom = NULL;
5555 const char *orig = p;
5563 bool a_must_be_last = false;
5564 bool ordered_set = false;
5565 bool disjunct_set = false;
5566 bool disj_matched = false;
5567 bool disj_starred = true;
5568 bool n_way_choice = false;
5569 bool n_way_matched = false;
5571 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5578 /* Scan one "atom" (S in the description above of %{}, possibly
5579 with '!', '.', '@', ',', or '*' modifiers). */
5581 a_is_suffix = false;
5582 a_is_starred = false;
5583 a_is_negated = false;
5584 a_is_spectype = false;
5588 p++, a_is_negated = true;
5592 p++, a_is_suffix = true;
5594 p++, a_is_spectype = true;
5597 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5598 || *p == ',' || *p == '.' || *p == '@')
5603 p++, a_is_starred = 1;
5609 /* Substitute the switch(es) indicated by the current atom. */
5611 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5612 || a_is_spectype || atom == end_atom)
5615 mark_matching_switches (atom, end_atom, a_is_starred);
5618 process_marked_switches ();
5622 /* Substitute some text if the current atom appears as a switch
5624 disjunct_set = true;
5628 if (atom == end_atom)
5630 if (!n_way_choice || disj_matched || *p == '|'
5631 || a_is_negated || a_is_suffix || a_is_spectype
5635 /* An empty term may appear as the last choice of an
5636 N-way choice set; it means "otherwise". */
5637 a_must_be_last = true;
5638 disj_matched = !n_way_matched;
5639 disj_starred = false;
5643 if ((a_is_suffix || a_is_spectype) && a_is_starred)
5647 disj_starred = false;
5649 /* Don't bother testing this atom if we already have a
5651 if (!disj_matched && !n_way_matched)
5654 a_matched = input_suffix_matches (atom, end_atom);
5655 else if (a_is_spectype)
5656 a_matched = input_spec_matches (atom, end_atom);
5658 a_matched = switch_matches (atom, end_atom, a_is_starred);
5660 if (a_matched != a_is_negated)
5662 disj_matched = true;
5664 d_end_atom = end_atom;
5671 /* Found the body, that is, the text to substitute if the
5672 current disjunction matches. */
5673 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5674 disj_matched && !n_way_matched);
5678 /* If we have an N-way choice, reset state for the next
5682 n_way_choice = true;
5683 n_way_matched |= disj_matched;
5684 disj_matched = false;
5685 disj_starred = true;
5686 d_atom = d_end_atom = NULL;
5695 while (*p++ != '}');
5700 fatal_error ("braced spec %qs is invalid at %qc", orig, *p);
5705 /* Subroutine of handle_braces. Scan and process a brace substitution body
5706 (X in the description of %{} syntax). P points one past the colon;
5707 ATOM and END_ATOM bracket the first atom which was found to be true
5708 (present) in the current disjunction; STARRED indicates whether all
5709 the atoms in the current disjunction were starred (for syntax validation);
5710 MATCHED indicates whether the disjunction matched or not, and therefore
5711 whether or not the body is to be processed through do_spec_1 or just
5712 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5716 process_brace_body (const char *p, const char *atom, const char *end_atom,
5717 int starred, int matched)
5719 const char *body, *end_body;
5720 unsigned int nesting_level;
5721 bool have_subst = false;
5723 /* Locate the closing } or ;, honoring nested braces.
5724 Trim trailing whitespace. */
5733 if (!--nesting_level)
5736 else if (*p == ';' && nesting_level == 1)
5738 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
5740 else if (*p == '\0')
5746 while (end_body[-1] == ' ' || end_body[-1] == '\t')
5749 if (have_subst && !starred)
5754 /* Copy the substitution body to permanent storage and execute it.
5755 If have_subst is false, this is a simple matter of running the
5756 body through do_spec_1... */
5757 char *string = save_string (body, end_body - body);
5760 if (do_spec_1 (string, 0, NULL) < 0)
5765 /* ... but if have_subst is true, we have to process the
5766 body once for each matching switch, with %* set to the
5767 variant part of the switch. */
5768 unsigned int hard_match_len = end_atom - atom;
5771 for (i = 0; i < n_switches; i++)
5772 if (!strncmp (switches[i].part1, atom, hard_match_len)
5773 && check_live_switch (i, hard_match_len))
5775 if (do_spec_1 (string, 0,
5776 &switches[i].part1[hard_match_len]) < 0)
5778 /* Pass any arguments this switch has. */
5780 suffix_subst = NULL;
5788 fatal_error ("braced spec body %qs is invalid", body);
5791 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5792 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5793 spec, or -1 if either exact match or %* is used.
5795 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5796 whose value does not begin with "no-" is obsoleted by the same value
5797 with the "no-", similarly for a switch with the "no-" prefix. */
5800 check_live_switch (int switchnum, int prefix_length)
5802 const char *name = switches[switchnum].part1;
5805 /* If we already processed this switch and determined if it was
5806 live or not, return our past determination. */
5807 if (switches[switchnum].live_cond != 0)
5808 return ((switches[switchnum].live_cond & SWITCH_LIVE) != 0
5809 && (switches[switchnum].live_cond & SWITCH_FALSE) == 0
5810 && (switches[switchnum].live_cond & SWITCH_IGNORE_PERMANENTLY)
5813 /* In the common case of {<at-most-one-letter>*}, a negating
5814 switch would always match, so ignore that case. We will just
5815 send the conflicting switches to the compiler phase. */
5816 if (prefix_length >= 0 && prefix_length <= 1)
5819 /* Now search for duplicate in a manner that depends on the name. */
5823 for (i = switchnum + 1; i < n_switches; i++)
5824 if (switches[i].part1[0] == 'O')
5826 switches[switchnum].validated = 1;
5827 switches[switchnum].live_cond = SWITCH_FALSE;
5832 case 'W': case 'f': case 'm':
5833 if (! strncmp (name + 1, "no-", 3))
5835 /* We have Xno-YYY, search for XYYY. */
5836 for (i = switchnum + 1; i < n_switches; i++)
5837 if (switches[i].part1[0] == name[0]
5838 && ! strcmp (&switches[i].part1[1], &name[4]))
5840 switches[switchnum].validated = 1;
5841 switches[switchnum].live_cond = SWITCH_FALSE;
5847 /* We have XYYY, search for Xno-YYY. */
5848 for (i = switchnum + 1; i < n_switches; i++)
5849 if (switches[i].part1[0] == name[0]
5850 && switches[i].part1[1] == 'n'
5851 && switches[i].part1[2] == 'o'
5852 && switches[i].part1[3] == '-'
5853 && !strcmp (&switches[i].part1[4], &name[1]))
5855 switches[switchnum].validated = 1;
5856 switches[switchnum].live_cond = SWITCH_FALSE;
5863 /* Otherwise the switch is live. */
5864 switches[switchnum].live_cond |= SWITCH_LIVE;
5868 /* Pass a switch to the current accumulating command
5869 in the same form that we received it.
5870 SWITCHNUM identifies the switch; it is an index into
5871 the vector of switches gcc received, which is `switches'.
5872 This cannot fail since it never finishes a command line.
5874 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5877 give_switch (int switchnum, int omit_first_word)
5879 if ((switches[switchnum].live_cond & SWITCH_IGNORE) != 0)
5882 if (!omit_first_word)
5884 do_spec_1 ("-", 0, NULL);
5885 do_spec_1 (switches[switchnum].part1, 1, NULL);
5888 if (switches[switchnum].args != 0)
5891 for (p = switches[switchnum].args; *p; p++)
5893 const char *arg = *p;
5895 do_spec_1 (" ", 0, NULL);
5898 unsigned length = strlen (arg);
5901 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5902 if (arg[length] == '.')
5904 (CONST_CAST(char *, arg))[length] = 0;
5908 do_spec_1 (arg, 1, NULL);
5910 (CONST_CAST(char *, arg))[length] = '.';
5911 do_spec_1 (suffix_subst, 1, NULL);
5914 do_spec_1 (arg, 1, NULL);
5918 do_spec_1 (" ", 0, NULL);
5919 switches[switchnum].validated = 1;
5922 /* Search for a file named NAME trying various prefixes including the
5923 user's -B prefix and some standard ones.
5924 Return the absolute file name found. If nothing is found, return NAME. */
5927 find_file (const char *name)
5929 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true);
5930 return newname ? newname : name;
5933 /* Determine whether a directory exists. If LINKER, return 0 for
5934 certain fixed names not needed by the linker. */
5937 is_directory (const char *path1, bool linker)
5944 /* Ensure the string ends with "/.". The resulting path will be a
5945 directory even if the given path is a symbolic link. */
5946 len1 = strlen (path1);
5947 path = (char *) alloca (3 + len1);
5948 memcpy (path, path1, len1);
5950 if (!IS_DIR_SEPARATOR (cp[-1]))
5951 *cp++ = DIR_SEPARATOR;
5955 /* Exclude directories that the linker is known to search. */
5957 && IS_DIR_SEPARATOR (path[0])
5959 && filename_ncmp (path + 1, "lib", 3) == 0)
5961 && filename_ncmp (path + 1, "usr", 3) == 0
5962 && IS_DIR_SEPARATOR (path[4])
5963 && filename_ncmp (path + 5, "lib", 3) == 0)))
5966 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5969 /* Set up the various global variables to indicate that we're processing
5970 the input file named FILENAME. */
5973 set_input (const char *filename)
5977 gcc_input_filename = filename;
5978 input_filename_length = strlen (gcc_input_filename);
5979 input_basename = lbasename (gcc_input_filename);
5981 /* Find a suffix starting with the last period,
5982 and set basename_length to exclude that suffix. */
5983 basename_length = strlen (input_basename);
5984 suffixed_basename_length = basename_length;
5985 p = input_basename + basename_length;
5986 while (p != input_basename && *p != '.')
5988 if (*p == '.' && p != input_basename)
5990 basename_length = p - input_basename;
5991 input_suffix = p + 1;
5996 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5997 we will need to do a stat on the gcc_input_filename. The
5998 INPUT_STAT_SET signals that the stat is needed. */
6002 /* On fatal signals, delete all the temporary files. */
6005 fatal_signal (int signum)
6007 signal (signum, SIG_DFL);
6008 delete_failure_queue ();
6009 delete_temp_files ();
6010 /* Get the same signal again, this time not handled,
6011 so its normal effect occurs. */
6012 kill (getpid (), signum);
6015 /* Compare the contents of the two files named CMPFILE[0] and
6016 CMPFILE[1]. Return zero if they're identical, nonzero
6020 compare_files (char *cmpfile[])
6023 FILE *temp[2] = { NULL, NULL };
6029 void *map[2] = { NULL, NULL };
6031 for (i = 0; i < 2; i++)
6035 if (stat (cmpfile[i], &st) < 0 || !S_ISREG (st.st_mode))
6037 error ("%s: could not determine length of compare-debug file %s",
6038 gcc_input_filename, cmpfile[i]);
6043 length[i] = st.st_size;
6046 if (!ret && length[0] != length[1])
6048 error ("%s: -fcompare-debug failure (length)", gcc_input_filename);
6053 for (i = 0; i < 2; i++)
6055 int fd = open (cmpfile[i], O_RDONLY);
6058 error ("%s: could not open compare-debug file %s",
6059 gcc_input_filename, cmpfile[i]);
6064 map[i] = mmap (NULL, length[i], PROT_READ, MAP_PRIVATE, fd, 0);
6067 if (map[i] == (void *) MAP_FAILED)
6076 if (memcmp (map[0], map[1], length[0]) != 0)
6078 error ("%s: -fcompare-debug failure", gcc_input_filename);
6083 for (i = 0; i < 2; i++)
6085 munmap ((caddr_t) map[i], length[i]);
6094 for (i = 0; i < 2; i++)
6096 temp[i] = fopen (cmpfile[i], "r");
6099 error ("%s: could not open compare-debug file %s",
6100 gcc_input_filename, cmpfile[i]);
6106 if (!ret && temp[0] && temp[1])
6110 c0 = fgetc (temp[0]);
6111 c1 = fgetc (temp[1]);
6115 error ("%s: -fcompare-debug failure",
6116 gcc_input_filename);
6125 for (i = 1; i >= 0; i--)
6134 extern int main (int, char **);
6137 main (int argc, char **argv)
6141 int linker_was_run = 0;
6142 int lang_n_infiles = 0;
6143 int num_linker_inputs = 0;
6144 char *explicit_link_files;
6146 char *lto_wrapper_file;
6148 struct user_specs *uptr;
6149 char **old_argv = argv;
6150 struct cl_decoded_option *decoded_options;
6151 unsigned int decoded_options_count;
6153 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
6154 on ?: in file-scope variable initializations. */
6155 asm_debug = ASM_DEBUG_SPEC;
6157 p = argv[0] + strlen (argv[0]);
6158 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
6162 xmalloc_set_program_name (progname);
6164 expandargv (&argc, &argv);
6166 /* Determine if any expansions were made. */
6167 if (argv != old_argv)
6168 at_file_supplied = true;
6170 /* Register the language-independent parameters. */
6171 global_init_params ();
6174 init_options_struct (&global_options, &global_options_set);
6176 decode_cmdline_options_to_array (argc, CONST_CAST2 (const char **, char **,
6179 &decoded_options, &decoded_options_count);
6181 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6182 /* Perform host dependent initialization when needed. */
6183 GCC_DRIVER_HOST_INITIALIZATION;
6186 /* Unlock the stdio streams. */
6187 unlock_std_streams ();
6189 gcc_init_libintl ();
6191 diagnostic_initialize (global_dc, 0);
6192 if (atexit (delete_temp_files) != 0)
6193 fatal_error ("atexit failed");
6195 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
6196 signal (SIGINT, fatal_signal);
6198 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
6199 signal (SIGHUP, fatal_signal);
6201 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
6202 signal (SIGTERM, fatal_signal);
6204 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
6205 signal (SIGPIPE, fatal_signal);
6208 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6209 receive the signal. A different setting is inheritable */
6210 signal (SIGCHLD, SIG_DFL);
6213 /* Parsing and gimplification sometimes need quite large stack.
6214 Increase stack size limits if possible. */
6215 stack_limit_increase (64 * 1024 * 1024);
6217 /* Allocate the argument vector. */
6220 obstack_init (&obstack);
6222 /* Build multilib_select, et. al from the separate lines that make up each
6223 multilib selection. */
6225 const char *const *q = multilib_raw;
6228 obstack_init (&multilib_obstack);
6229 while ((p = *q++) != (char *) 0)
6230 obstack_grow (&multilib_obstack, p, strlen (p));
6232 obstack_1grow (&multilib_obstack, 0);
6233 multilib_select = XOBFINISH (&multilib_obstack, const char *);
6235 q = multilib_matches_raw;
6236 while ((p = *q++) != (char *) 0)
6237 obstack_grow (&multilib_obstack, p, strlen (p));
6239 obstack_1grow (&multilib_obstack, 0);
6240 multilib_matches = XOBFINISH (&multilib_obstack, const char *);
6242 q = multilib_exclusions_raw;
6243 while ((p = *q++) != (char *) 0)
6244 obstack_grow (&multilib_obstack, p, strlen (p));
6246 obstack_1grow (&multilib_obstack, 0);
6247 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *);
6250 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
6253 obstack_1grow (&multilib_obstack, ' ');
6254 obstack_grow (&multilib_obstack,
6255 multilib_defaults_raw[i],
6256 strlen (multilib_defaults_raw[i]));
6260 obstack_1grow (&multilib_obstack, 0);
6261 multilib_defaults = XOBFINISH (&multilib_obstack, const char *);
6264 #ifdef INIT_ENVIRONMENT
6265 /* Set up any other necessary machine specific environment variables. */
6266 xputenv (INIT_ENVIRONMENT);
6269 /* Make a table of what switches there are (switches, n_switches).
6270 Make a table of specified input files (infiles, n_infiles).
6271 Decode switches that are handled locally. */
6273 process_command (decoded_options_count, decoded_options);
6275 /* Initialize the vector of specs to just the default.
6276 This means one element containing 0s, as a terminator. */
6278 compilers = XNEWVAR (struct compiler, sizeof default_compilers);
6279 memcpy (compilers, default_compilers, sizeof default_compilers);
6280 n_compilers = n_default_compilers;
6282 /* Read specs from a file if there is one. */
6284 machine_suffix = concat (spec_machine, dir_separator_str,
6285 spec_version, dir_separator_str, NULL);
6286 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6288 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true);
6289 /* Read the specs file unless it is a default one. */
6290 if (specs_file != 0 && strcmp (specs_file, "specs"))
6291 read_specs (specs_file, TRUE);
6295 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6296 for any override of as, ld and libraries. */
6297 specs_file = (char *) alloca (strlen (standard_exec_prefix)
6298 + strlen (just_machine_suffix) + sizeof ("specs"));
6300 strcpy (specs_file, standard_exec_prefix);
6301 strcat (specs_file, just_machine_suffix);
6302 strcat (specs_file, "specs");
6303 if (access (specs_file, R_OK) == 0)
6304 read_specs (specs_file, TRUE);
6306 /* Process any configure-time defaults specified for the command line
6307 options, via OPTION_DEFAULT_SPECS. */
6308 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6309 do_option_spec (option_default_specs[i].name,
6310 option_default_specs[i].spec);
6312 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6313 of the command line. */
6315 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6316 do_self_spec (driver_self_specs[i]);
6318 /* If not cross-compiling, look for executables in the standard
6320 if (*cross_compile == '0')
6322 if (*md_exec_prefix)
6324 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6325 PREFIX_PRIORITY_LAST, 0, 0);
6329 /* Process sysroot_suffix_spec. */
6330 if (*sysroot_suffix_spec != 0
6331 && do_spec_2 (sysroot_suffix_spec) == 0)
6333 if (VEC_length (const_char_p, argbuf) > 1)
6334 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6335 else if (VEC_length (const_char_p, argbuf) == 1)
6336 target_sysroot_suffix = xstrdup (VEC_last (const_char_p, argbuf));
6339 #ifdef HAVE_LD_SYSROOT
6340 /* Pass the --sysroot option to the linker, if it supports that. If
6341 there is a sysroot_suffix_spec, it has already been processed by
6342 this point, so target_system_root really is the system root we
6344 if (target_system_root)
6346 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6347 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
6348 set_spec ("link", XOBFINISH (&obstack, const char *));
6352 /* Process sysroot_hdrs_suffix_spec. */
6353 if (*sysroot_hdrs_suffix_spec != 0
6354 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6356 if (VEC_length (const_char_p, argbuf) > 1)
6357 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6358 else if (VEC_length (const_char_p, argbuf) == 1)
6359 target_sysroot_hdrs_suffix = xstrdup (VEC_last (const_char_p, argbuf));
6362 /* Look for startfiles in the standard places. */
6363 if (*startfile_prefix_spec != 0
6364 && do_spec_2 (startfile_prefix_spec) == 0
6365 && do_spec_1 (" ", 0, NULL) == 0)
6369 FOR_EACH_VEC_ELT (const_char_p, argbuf, ndx, arg)
6370 add_sysrooted_prefix (&startfile_prefixes, arg, "BINUTILS",
6371 PREFIX_PRIORITY_LAST, 0, 1);
6373 /* We should eventually get rid of all these and stick to
6374 startfile_prefix_spec exclusively. */
6375 else if (*cross_compile == '0' || target_system_root)
6377 if (*md_startfile_prefix)
6378 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6379 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6381 if (*md_startfile_prefix_1)
6382 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6383 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6385 /* If standard_startfile_prefix is relative, base it on
6386 standard_exec_prefix. This lets us move the installed tree
6387 as a unit. If GCC_EXEC_PREFIX is defined, base
6388 standard_startfile_prefix on that as well.
6390 If the prefix is relative, only search it for native compilers;
6391 otherwise we will search a directory containing host libraries. */
6392 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
6393 add_sysrooted_prefix (&startfile_prefixes,
6394 standard_startfile_prefix, "BINUTILS",
6395 PREFIX_PRIORITY_LAST, 0, 1);
6396 else if (*cross_compile == '0')
6398 add_prefix (&startfile_prefixes,
6399 concat (gcc_exec_prefix
6400 ? gcc_exec_prefix : standard_exec_prefix,
6402 standard_startfile_prefix, NULL),
6403 NULL, PREFIX_PRIORITY_LAST, 0, 1);
6406 /* Sysrooted prefixes are relocated because target_system_root is
6407 also relocated by gcc_exec_prefix. */
6408 if (*standard_startfile_prefix_1)
6409 add_sysrooted_prefix (&startfile_prefixes,
6410 standard_startfile_prefix_1, "BINUTILS",
6411 PREFIX_PRIORITY_LAST, 0, 1);
6412 if (*standard_startfile_prefix_2)
6413 add_sysrooted_prefix (&startfile_prefixes,
6414 standard_startfile_prefix_2, "BINUTILS",
6415 PREFIX_PRIORITY_LAST, 0, 1);
6418 /* Process any user specified specs in the order given on the command
6420 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6422 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6424 read_specs (filename ? filename : uptr->filename, FALSE);
6427 /* Process any user self specs. */
6429 struct spec_list *sl;
6430 for (sl = specs; sl; sl = sl->next)
6431 if (sl->name_len == sizeof "self_spec" - 1
6432 && !strcmp (sl->name, "self_spec"))
6433 do_self_spec (*sl->ptr_spec);
6438 enum save_temps save;
6440 if (!compare_debug_second)
6442 n_switches_debug_check[1] = n_switches;
6443 n_switches_alloc_debug_check[1] = n_switches_alloc;
6444 switches_debug_check[1] = XDUPVEC (struct switchstr, switches,
6447 do_self_spec ("%:compare-debug-self-opt()");
6448 n_switches_debug_check[0] = n_switches;
6449 n_switches_alloc_debug_check[0] = n_switches_alloc;
6450 switches_debug_check[0] = switches;
6452 n_switches = n_switches_debug_check[1];
6453 n_switches_alloc = n_switches_alloc_debug_check[1];
6454 switches = switches_debug_check[1];
6457 /* Avoid crash when computing %j in this early. */
6458 save = save_temps_flag;
6459 save_temps_flag = SAVE_TEMPS_NONE;
6461 compare_debug = -compare_debug;
6462 do_self_spec ("%:compare-debug-self-opt()");
6464 save_temps_flag = save;
6466 if (!compare_debug_second)
6468 n_switches_debug_check[1] = n_switches;
6469 n_switches_alloc_debug_check[1] = n_switches_alloc;
6470 switches_debug_check[1] = switches;
6471 compare_debug = -compare_debug;
6472 n_switches = n_switches_debug_check[0];
6473 n_switches_alloc = n_switches_debug_check[0];
6474 switches = switches_debug_check[0];
6479 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6480 if (gcc_exec_prefix)
6481 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6482 spec_version, dir_separator_str, NULL);
6484 /* Now we have the specs.
6485 Set the `valid' bits for switches that match anything in any spec. */
6487 validate_all_switches ();
6489 /* Now that we have the switches and the specs, set
6490 the subdirectory based on the options. */
6491 set_multilib_dir ();
6493 /* Set up to remember the pathname of gcc and any options
6494 needed for collect. We use argv[0] instead of progname because
6495 we need the complete pathname. */
6496 obstack_init (&collect_obstack);
6497 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6498 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6499 xputenv (XOBFINISH (&collect_obstack, char *));
6501 /* Set up to remember the pathname of the lto wrapper. */
6504 lto_wrapper_file = NULL;
6506 lto_wrapper_file = find_a_file (&exec_prefixes, "lto-wrapper",
6508 if (lto_wrapper_file)
6510 lto_wrapper_file = convert_white_space (lto_wrapper_file);
6511 lto_wrapper_spec = lto_wrapper_file;
6512 obstack_init (&collect_obstack);
6513 obstack_grow (&collect_obstack, "COLLECT_LTO_WRAPPER=",
6514 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
6515 obstack_grow (&collect_obstack, lto_wrapper_spec,
6516 strlen (lto_wrapper_spec) + 1);
6517 xputenv (XOBFINISH (&collect_obstack, char *));
6520 /* Warn about any switches that no pass was interested in. */
6522 for (i = 0; (int) i < n_switches; i++)
6523 if (! switches[i].validated)
6524 error ("unrecognized option %<-%s%>", switches[i].part1);
6526 /* Obey some of the options. */
6528 if (print_search_dirs)
6530 printf (_("install: %s%s\n"),
6531 gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
6532 gcc_exec_prefix ? "" : machine_suffix);
6533 printf (_("programs: %s\n"),
6534 build_search_list (&exec_prefixes, "", false, false));
6535 printf (_("libraries: %s\n"),
6536 build_search_list (&startfile_prefixes, "", false, true));
6540 if (print_file_name)
6542 printf ("%s\n", find_file (print_file_name));
6546 if (print_prog_name)
6548 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6549 printf ("%s\n", (newname ? newname : print_prog_name));
6553 if (print_multi_lib)
6555 print_multilib_info ();
6559 if (print_multi_directory)
6561 if (multilib_dir == NULL)
6564 printf ("%s\n", multilib_dir);
6568 if (print_multiarch)
6570 if (multiarch_dir == NULL)
6573 printf ("%s\n", multiarch_dir);
6579 if (target_system_root)
6581 if (target_sysroot_suffix)
6582 printf ("%s%s\n", target_system_root, target_sysroot_suffix);
6584 printf ("%s\n", target_system_root);
6589 if (print_multi_os_directory)
6591 if (multilib_os_dir == NULL)
6594 printf ("%s\n", multilib_os_dir);
6598 if (print_sysroot_headers_suffix)
6600 if (*sysroot_hdrs_suffix_spec)
6602 printf("%s\n", (target_sysroot_hdrs_suffix
6603 ? target_sysroot_hdrs_suffix
6608 /* The error status indicates that only one set of fixed
6609 headers should be built. */
6610 fatal_error ("not configured with sysroot headers suffix");
6613 if (print_help_list)
6619 printf (_("\nFor bug reporting instructions, please see:\n"));
6620 printf ("%s.\n", bug_report_url);
6625 /* We do not exit here. Instead we have created a fake input file
6626 called 'help-dummy' which needs to be compiled, and we pass this
6627 on the various sub-processes, along with the --help switch.
6628 Ensure their output appears after ours. */
6629 fputc ('\n', stdout);
6635 printf (_("%s %s%s\n"), progname, pkgversion_string,
6637 printf ("Copyright %s 2012 Free Software Foundation, Inc.\n",
6639 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
6640 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
6645 /* We do not exit here. We use the same mechanism of --help to print
6646 the version of the sub-processes. */
6647 fputc ('\n', stdout);
6656 fnotice (stderr, "Target: %s\n", spec_machine);
6657 fnotice (stderr, "Configured with: %s\n", configuration_arguments);
6659 #ifdef THREAD_MODEL_SPEC
6660 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6661 but there's no point in doing all this processing just to get
6662 thread_model back. */
6663 obstack_init (&obstack);
6664 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6665 obstack_1grow (&obstack, '\0');
6666 thrmod = XOBFINISH (&obstack, const char *);
6668 thrmod = thread_model;
6671 fnotice (stderr, "Thread model: %s\n", thrmod);
6673 /* compiler_version is truncated at the first space when initialized
6674 from version string, so truncate version_string at the first space
6675 before comparing. */
6676 for (n = 0; version_string[n]; n++)
6677 if (version_string[n] == ' ')
6680 if (! strncmp (version_string, compiler_version, n)
6681 && compiler_version[n] == 0)
6682 fnotice (stderr, "gcc version %s %s\n", version_string,
6685 fnotice (stderr, "gcc driver version %s %sexecuting gcc version %s\n",
6686 version_string, pkgversion_string, compiler_version);
6692 if (n_infiles == added_libraries)
6693 fatal_error ("no input files");
6698 /* Make a place to record the compiler output file names
6699 that correspond to the input files. */
6702 i += lang_specific_extra_outfiles;
6703 outfiles = XCNEWVEC (const char *, i);
6705 /* Record which files were specified explicitly as link input. */
6707 explicit_link_files = XCNEWVEC (char, n_infiles);
6709 combine_inputs = have_o || flag_wpa;
6711 for (i = 0; (int) i < n_infiles; i++)
6713 const char *name = infiles[i].name;
6714 struct compiler *compiler = lookup_compiler (name,
6716 infiles[i].language);
6718 if (compiler && !(compiler->combinable))
6719 combine_inputs = false;
6721 if (lang_n_infiles > 0 && compiler != input_file_compiler
6722 && infiles[i].language && infiles[i].language[0] != '*')
6723 infiles[i].incompiler = compiler;
6727 input_file_compiler = compiler;
6728 infiles[i].incompiler = compiler;
6732 /* Since there is no compiler for this input file, assume it is a
6734 explicit_link_files[i] = 1;
6735 infiles[i].incompiler = NULL;
6737 infiles[i].compiled = false;
6738 infiles[i].preprocessed = false;
6741 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1)
6742 fatal_error ("cannot specify -o with -c, -S or -E with multiple files");
6744 for (i = 0; (int) i < n_infiles; i++)
6746 int this_file_error = 0;
6748 /* Tell do_spec what to substitute for %i. */
6750 input_file_number = i;
6751 set_input (infiles[i].name);
6753 if (infiles[i].compiled)
6756 /* Use the same thing in %o, unless cp->spec says otherwise. */
6758 outfiles[i] = gcc_input_filename;
6760 /* Figure out which compiler from the file's suffix. */
6763 = lookup_compiler (infiles[i].name, input_filename_length,
6764 infiles[i].language);
6766 if (input_file_compiler)
6768 /* Ok, we found an applicable compiler. Run its spec. */
6770 if (input_file_compiler->spec[0] == '#')
6772 error ("%s: %s compiler not installed on this system",
6773 gcc_input_filename, &input_file_compiler->spec[1]);
6774 this_file_error = 1;
6780 free (debug_check_temp_file[0]);
6781 debug_check_temp_file[0] = NULL;
6783 free (debug_check_temp_file[1]);
6784 debug_check_temp_file[1] = NULL;
6787 value = do_spec (input_file_compiler->spec);
6788 infiles[i].compiled = true;
6790 this_file_error = 1;
6791 else if (compare_debug && debug_check_temp_file[0])
6794 inform (0, "recompiling with -fcompare-debug");
6796 compare_debug = -compare_debug;
6797 n_switches = n_switches_debug_check[1];
6798 n_switches_alloc = n_switches_alloc_debug_check[1];
6799 switches = switches_debug_check[1];
6801 value = do_spec (input_file_compiler->spec);
6803 compare_debug = -compare_debug;
6804 n_switches = n_switches_debug_check[0];
6805 n_switches_alloc = n_switches_alloc_debug_check[0];
6806 switches = switches_debug_check[0];
6810 error ("during -fcompare-debug recompilation");
6811 this_file_error = 1;
6814 gcc_assert (debug_check_temp_file[1]
6815 && filename_cmp (debug_check_temp_file[0],
6816 debug_check_temp_file[1]));
6819 inform (0, "comparing final insns dumps");
6821 if (compare_files (debug_check_temp_file))
6822 this_file_error = 1;
6827 free (debug_check_temp_file[0]);
6828 debug_check_temp_file[0] = NULL;
6830 free (debug_check_temp_file[1]);
6831 debug_check_temp_file[1] = NULL;
6836 /* If this file's name does not contain a recognized suffix,
6837 record it as explicit linker input. */
6840 explicit_link_files[i] = 1;
6842 /* Clear the delete-on-failure queue, deleting the files in it
6843 if this compilation failed. */
6845 if (this_file_error)
6847 delete_failure_queue ();
6850 /* If this compilation succeeded, don't delete those files later. */
6851 clear_failure_queue ();
6854 /* Reset the input file name to the first compile/object file name, for use
6855 with %b in LINK_SPEC. We use the first input file that we can find
6856 a compiler to compile it instead of using infiles.language since for
6857 languages other than C we use aliases that we then lookup later. */
6862 for (i = 0; i < n_infiles ; i++)
6863 if (infiles[i].incompiler
6864 || (infiles[i].language && infiles[i].language[0] != '*'))
6866 set_input (infiles[i].name);
6873 /* Make sure INPUT_FILE_NUMBER points to first available open
6875 input_file_number = n_infiles;
6876 if (lang_specific_pre_link ())
6880 /* Determine if there are any linker input files. */
6881 num_linker_inputs = 0;
6882 for (i = 0; (int) i < n_infiles; i++)
6883 if (explicit_link_files[i] || outfiles[i] != NULL)
6884 num_linker_inputs++;
6886 /* Run ld to link all the compiler output files. */
6888 if (num_linker_inputs > 0 && !seen_error () && print_subprocess_help < 2)
6890 int tmp = execution_count;
6894 #if HAVE_LTO_PLUGIN > 0
6895 #if HAVE_LTO_PLUGIN == 2
6896 const char *fno_use_linker_plugin = "fno-use-linker-plugin";
6898 const char *fuse_linker_plugin = "fuse-linker-plugin";
6902 /* We'll use ld if we can't find collect2. */
6903 if (! strcmp (linker_name_spec, "collect2"))
6905 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false);
6907 linker_name_spec = "ld";
6910 #if HAVE_LTO_PLUGIN > 0
6911 #if HAVE_LTO_PLUGIN == 2
6912 if (!switch_matches (fno_use_linker_plugin,
6913 fno_use_linker_plugin
6914 + strlen (fno_use_linker_plugin), 0))
6916 if (switch_matches (fuse_linker_plugin,
6918 + strlen (fuse_linker_plugin), 0))
6921 char *temp_spec = find_a_file (&exec_prefixes,
6922 LTOPLUGINSONAME, R_OK,
6925 fatal_error ("-fuse-linker-plugin, but %s not found",
6927 linker_plugin_file_spec = convert_white_space (temp_spec);
6930 lto_gcc_spec = argv[0];
6933 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6935 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false);
6936 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true);
6938 if (print_subprocess_help == 1)
6940 printf (_("\nLinker options\n==============\n\n"));
6941 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
6942 " to the linker.\n\n"));
6945 value = do_spec (link_command_spec);
6948 linker_was_run = (tmp != execution_count);
6951 /* If options said don't run linker,
6952 complain about input files to be given to the linker. */
6954 if (! linker_was_run && !seen_error ())
6955 for (i = 0; (int) i < n_infiles; i++)
6956 if (explicit_link_files[i]
6957 && !(infiles[i].language && infiles[i].language[0] == '*'))
6958 warning (0, "%s: linker input file unused because linking not done",
6961 /* Delete some or all of the temporary files we made. */
6964 delete_failure_queue ();
6965 delete_temp_files ();
6967 if (print_help_list)
6969 printf (("\nFor bug reporting instructions, please see:\n"));
6970 printf ("%s\n", bug_report_url);
6974 return (signal_count != 0 ? 2
6975 : seen_error () ? (pass_exit_codes ? greatest_status : 1)
6979 /* Find the proper compilation spec for the file name NAME,
6980 whose length is LENGTH. LANGUAGE is the specified language,
6981 or 0 if this file is to be passed to the linker. */
6983 static struct compiler *
6984 lookup_compiler (const char *name, size_t length, const char *language)
6986 struct compiler *cp;
6988 /* If this was specified by the user to be a linker input, indicate that. */
6989 if (language != 0 && language[0] == '*')
6992 /* Otherwise, look for the language, if one is spec'd. */
6995 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6996 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6999 error ("language %s not recognized", language);
7003 /* Look for a suffix. */
7004 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
7006 if (/* The suffix `-' matches only the file name `-'. */
7007 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
7008 || (strlen (cp->suffix) < length
7009 /* See if the suffix matches the end of NAME. */
7010 && !strcmp (cp->suffix,
7011 name + length - strlen (cp->suffix))
7016 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
7017 /* Look again, but case-insensitively this time. */
7019 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
7021 if (/* The suffix `-' matches only the file name `-'. */
7022 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
7023 || (strlen (cp->suffix) < length
7024 /* See if the suffix matches the end of NAME. */
7025 && ((!strcmp (cp->suffix,
7026 name + length - strlen (cp->suffix))
7027 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
7028 && !strcasecmp (cp->suffix,
7029 name + length - strlen (cp->suffix)))
7035 if (cp >= compilers)
7037 if (cp->spec[0] != '@')
7038 /* A non-alias entry: return it. */
7041 /* An alias entry maps a suffix to a language.
7042 Search for the language; pass 0 for NAME and LENGTH
7043 to avoid infinite recursion if language not found. */
7044 return lookup_compiler (NULL, 0, cp->spec + 1);
7050 save_string (const char *s, int len)
7052 char *result = XNEWVEC (char, len + 1);
7054 memcpy (result, s, len);
7060 pfatal_with_name (const char *name)
7062 perror_with_name (name);
7063 delete_temp_files ();
7068 perror_with_name (const char *name)
7070 error ("%s: %m", name);
7074 validate_switches_from_spec (const char *spec)
7076 const char *p = spec;
7079 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
7080 /* We have a switch spec. */
7081 p = validate_switches (p + 1);
7085 validate_all_switches (void)
7087 struct compiler *comp;
7088 struct spec_list *spec;
7090 for (comp = compilers; comp->spec; comp++)
7091 validate_switches_from_spec (comp->spec);
7093 /* Look through the linked list of specs read from the specs file. */
7094 for (spec = specs; spec; spec = spec->next)
7095 validate_switches_from_spec (*spec->ptr_spec);
7097 validate_switches_from_spec (link_command_spec);
7100 /* Look at the switch-name that comes after START
7101 and mark as valid all supplied switches that match it. */
7104 validate_switches (const char *start)
7106 const char *p = start;
7110 bool suffix = false;
7111 bool starred = false;
7113 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7122 if (*p == '.' || *p == ',')
7126 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
7127 || *p == ',' || *p == '.' || *p == '@')
7132 starred = true, p++;
7138 /* Mark all matching switches as valid. */
7139 for (i = 0; i < n_switches; i++)
7140 if (!strncmp (switches[i].part1, atom, len)
7141 && (starred || switches[i].part1[len] == 0))
7142 switches[i].validated = 1;
7146 if (*p && (p[-1] == '|' || p[-1] == '&'))
7149 if (*p && p[-1] == ':')
7151 while (*p && *p != ';' && *p != '}')
7156 if (*p == '{' || *p == '<')
7157 p = validate_switches (p+1);
7158 else if (p[0] == 'W' && p[1] == '{')
7159 p = validate_switches (p+2);
7166 if (*p && p[-1] == ';')
7180 static struct mdswitchstr *mdswitches;
7181 static int n_mdswitches;
7183 /* Check whether a particular argument was used. The first time we
7184 canonicalize the switches to keep only the ones we care about. */
7187 used_arg (const char *p, int len)
7192 const char *replace;
7197 static struct mswitchstr *mswitches;
7198 static int n_mswitches;
7203 struct mswitchstr *matches;
7207 /* Break multilib_matches into the component strings of string
7208 and replacement string. */
7209 for (q = multilib_matches; *q != '\0'; q++)
7214 = (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
7216 q = multilib_matches;
7225 fatal_error ("multilib spec %qs is invalid",
7230 matches[i].len = q - matches[i].str;
7232 matches[i].replace = ++q;
7233 while (*q != ';' && *q != '\0')
7236 goto invalid_matches;
7239 matches[i].rep_len = q - matches[i].replace;
7245 /* Now build a list of the replacement string for switches that we care
7246 about. Make sure we allocate at least one entry. This prevents
7247 xmalloc from calling fatal, and prevents us from re-executing this
7250 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1));
7251 for (i = 0; i < n_switches; i++)
7252 if ((switches[i].live_cond & SWITCH_IGNORE) == 0)
7254 int xlen = strlen (switches[i].part1);
7255 for (j = 0; j < cnt; j++)
7256 if (xlen == matches[j].len
7257 && ! strncmp (switches[i].part1, matches[j].str, xlen))
7259 mswitches[n_mswitches].str = matches[j].replace;
7260 mswitches[n_mswitches].len = matches[j].rep_len;
7261 mswitches[n_mswitches].replace = (char *) 0;
7262 mswitches[n_mswitches].rep_len = 0;
7268 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7269 on the command line nor any options mutually incompatible with
7271 for (i = 0; i < n_mdswitches; i++)
7275 for (q = multilib_options; *q != '\0'; q++)
7281 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
7282 || strchr (" /", q[mdswitches[i].len]) == NULL)
7284 while (*q != ' ' && *q != '/' && *q != '\0')
7291 if (*q != ' ' && *q != '\0')
7293 while (*r != ' ' && *r != '\0')
7296 while (*q != ' ' && *q != '/' && *q != '\0')
7299 if (used_arg (r, q - r))
7304 mswitches[n_mswitches].str = mdswitches[i].str;
7305 mswitches[n_mswitches].len = mdswitches[i].len;
7306 mswitches[n_mswitches].replace = (char *) 0;
7307 mswitches[n_mswitches].rep_len = 0;
7320 for (i = 0; i < n_mswitches; i++)
7321 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
7328 default_arg (const char *p, int len)
7332 for (i = 0; i < n_mdswitches; i++)
7333 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
7339 /* Work out the subdirectory to use based on the options. The format of
7340 multilib_select is a list of elements. Each element is a subdirectory
7341 name followed by a list of options followed by a semicolon. The format
7342 of multilib_exclusions is the same, but without the preceding
7343 directory. First gcc will check the exclusions, if none of the options
7344 beginning with an exclamation point are present, and all of the other
7345 options are present, then we will ignore this completely. Passing
7346 that, gcc will consider each multilib_select in turn using the same
7347 rules for matching the options. If a match is found, that subdirectory
7349 A subdirectory name is optionally followed by a colon and the corresponding
7353 set_multilib_dir (void)
7356 unsigned int this_path_len;
7357 const char *this_path, *this_arg;
7358 const char *start, *end;
7360 int ok, ndfltok, first;
7363 start = multilib_defaults;
7364 while (*start == ' ' || *start == '\t')
7366 while (*start != '\0')
7369 while (*start != ' ' && *start != '\t' && *start != '\0')
7371 while (*start == ' ' || *start == '\t')
7379 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches);
7380 for (start = multilib_defaults; *start != '\0'; start = end + 1)
7382 while (*start == ' ' || *start == '\t')
7388 for (end = start + 1;
7389 *end != ' ' && *end != '\t' && *end != '\0'; end++)
7392 obstack_grow (&multilib_obstack, start, end - start);
7393 obstack_1grow (&multilib_obstack, 0);
7394 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *);
7395 mdswitches[i++].len = end - start;
7402 p = multilib_exclusions;
7405 /* Ignore newlines. */
7412 /* Check the arguments. */
7419 fatal_error ("multilib exclusions %qs is invalid",
7420 multilib_exclusions);
7430 while (*p != ' ' && *p != ';')
7433 goto invalid_exclusions;
7437 if (*this_arg != '!')
7445 ok = used_arg (this_arg, p - this_arg);
7460 p = multilib_select;
7463 /* Ignore newlines. */
7470 /* Get the initial path. */
7477 fatal_error ("multilib select %qs is invalid",
7482 this_path_len = p - this_path;
7484 /* Check the arguments. */
7491 goto invalid_select;
7500 while (*p != ' ' && *p != ';')
7503 goto invalid_select;
7507 if (*this_arg != '!')
7515 /* If this is a default argument, we can just ignore it.
7516 This is true even if this_arg begins with '!'. Beginning
7517 with '!' does not mean that this argument is necessarily
7518 inappropriate for this library: it merely means that
7519 there is a more specific library which uses this
7520 argument. If this argument is a default, we need not
7521 consider that more specific library. */
7522 ok = used_arg (this_arg, p - this_arg);
7529 if (default_arg (this_arg, p - this_arg))
7538 if (this_path_len != 1
7539 || this_path[0] != '.')
7541 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1);
7544 strncpy (new_multilib_dir, this_path, this_path_len);
7545 new_multilib_dir[this_path_len] = '\0';
7546 q = strchr (new_multilib_dir, ':');
7549 multilib_dir = new_multilib_dir;
7556 const char *q = this_path, *end = this_path + this_path_len;
7558 while (q < end && *q != ':')
7562 const char *q2 = q + 1, *ml_end = end;
7563 char *new_multilib_os_dir;
7565 while (q2 < end && *q2 != ':')
7569 new_multilib_os_dir = XNEWVEC (char, ml_end - q);
7570 memcpy (new_multilib_os_dir, q + 1, ml_end - q - 1);
7571 new_multilib_os_dir[ml_end - q - 1] = '\0';
7572 multilib_os_dir = *new_multilib_os_dir ? new_multilib_os_dir : ".";
7574 if (q2 < end && *q2 == ':')
7576 char *new_multiarch_dir = XNEWVEC (char, end - q2);
7577 memcpy (new_multiarch_dir, q2 + 1, end - q2 - 1);
7578 new_multiarch_dir[end - q2 - 1] = '\0';
7579 multiarch_dir = new_multiarch_dir;
7588 if (multilib_dir == NULL && multilib_os_dir != NULL
7589 && strcmp (multilib_os_dir, ".") == 0)
7591 free (CONST_CAST (char *, multilib_os_dir));
7592 multilib_os_dir = NULL;
7594 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7595 multilib_os_dir = multilib_dir;
7598 /* Print out the multiple library subdirectory selection
7599 information. This prints out a series of lines. Each line looks
7600 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7601 required. Only the desired options are printed out, the negative
7602 matches. The options are print without a leading dash. There are
7603 no spaces to make it easy to use the information in the shell.
7604 Each subdirectory is printed only once. This assumes the ordering
7605 generated by the genmultilib script. Also, we leave out ones that match
7609 print_multilib_info (void)
7611 const char *p = multilib_select;
7612 const char *last_path = 0, *this_path;
7614 unsigned int last_path_len = 0;
7619 /* Ignore newlines. */
7626 /* Get the initial path. */
7633 fatal_error ("multilib select %qs is invalid", multilib_select);
7639 /* When --disable-multilib was used but target defines
7640 MULTILIB_OSDIRNAMES, entries starting with .: (and not starting
7641 with .:: for multiarch configurations) are there just to find
7642 multilib_os_dir, so skip them from output. */
7643 if (this_path[0] == '.' && this_path[1] == ':' && this_path[2] != ':')
7646 /* Check for matches with the multilib_exclusions. We don't bother
7647 with the '!' in either list. If any of the exclusion rules match
7648 all of its options with the select rule, we skip it. */
7650 const char *e = multilib_exclusions;
7651 const char *this_arg;
7656 /* Ignore newlines. */
7663 /* Check the arguments. */
7672 fatal_error ("multilib exclusion %qs is invalid",
7673 multilib_exclusions);
7684 while (*e != ' ' && *e != ';')
7687 goto invalid_exclusion;
7695 int len = e - this_arg;
7698 goto invalid_select;
7702 while (*q != ' ' && *q != ';')
7705 goto invalid_select;
7709 if (! strncmp (arg, this_arg,
7710 (len < q - arg) ? q - arg : len)
7711 || default_arg (this_arg, e - this_arg))
7741 /* If this is a duplicate, skip it. */
7742 skip = (last_path != 0
7743 && (unsigned int) (p - this_path) == last_path_len
7744 && ! filename_ncmp (last_path, this_path, last_path_len));
7746 last_path = this_path;
7747 last_path_len = p - this_path;
7750 /* If this directory requires any default arguments, we can skip
7751 it. We will already have printed a directory identical to
7752 this one which does not require that default argument. */
7763 goto invalid_select;
7770 while (*q != ' ' && *q != ';')
7773 goto invalid_select;
7778 && default_arg (arg, q - arg))
7793 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7804 goto invalid_select;
7812 use_arg = *p != '!';
7817 while (*p != ' ' && *p != ';')
7820 goto invalid_select;
7832 /* If there are extra options, print them now. */
7833 if (multilib_extra && *multilib_extra)
7835 int print_at = TRUE;
7838 for (q = multilib_extra; *q != '\0'; q++)
7859 /* getenv built-in spec function.
7861 Returns the value of the environment variable given by its first
7862 argument, concatenated with the second argument. If the
7863 environment variable is not defined, a fatal error is issued. */
7866 getenv_spec_function (int argc, const char **argv)
7876 value = getenv (argv[0]);
7878 fatal_error ("environment variable %qs not defined", argv[0]);
7880 /* We have to escape every character of the environment variable so
7881 they are not interpreted as active spec characters. A
7882 particularly painful case is when we are reading a variable
7883 holding a windows path complete with \ separators. */
7884 len = strlen (value) * 2 + strlen (argv[1]) + 1;
7885 result = XNEWVAR (char, len);
7886 for (ptr = result; *value; ptr += 2)
7892 strcpy (ptr, argv[1]);
7897 /* if-exists built-in spec function.
7899 Checks to see if the file specified by the absolute pathname in
7900 ARGS exists. Returns that pathname if found.
7902 The usual use for this function is to check for a library file
7903 (whose name has been expanded with %s). */
7906 if_exists_spec_function (int argc, const char **argv)
7908 /* Must have only one argument. */
7909 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7915 /* if-exists-else built-in spec function.
7917 This is like if-exists, but takes an additional argument which
7918 is returned if the first argument does not exist. */
7921 if_exists_else_spec_function (int argc, const char **argv)
7923 /* Must have exactly two arguments. */
7927 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7933 /* replace-outfile built-in spec function.
7935 This looks for the first argument in the outfiles array's name and
7936 replaces it with the second argument. */
7939 replace_outfile_spec_function (int argc, const char **argv)
7942 /* Must have exactly two arguments. */
7946 for (i = 0; i < n_infiles; i++)
7948 if (outfiles[i] && !filename_cmp (outfiles[i], argv[0]))
7949 outfiles[i] = xstrdup (argv[1]);
7954 /* remove-outfile built-in spec function.
7956 * This looks for the first argument in the outfiles array's name and
7960 remove_outfile_spec_function (int argc, const char **argv)
7963 /* Must have exactly one argument. */
7967 for (i = 0; i < n_infiles; i++)
7969 if (outfiles[i] && !filename_cmp (outfiles[i], argv[0]))
7975 /* Given two version numbers, compares the two numbers.
7976 A version number must match the regular expression
7977 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
7980 compare_version_strings (const char *v1, const char *v2)
7985 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
7986 REG_EXTENDED | REG_NOSUB) != 0)
7988 rresult = regexec (&r, v1, 0, NULL, 0);
7989 if (rresult == REG_NOMATCH)
7990 fatal_error ("invalid version number %qs", v1);
7991 else if (rresult != 0)
7993 rresult = regexec (&r, v2, 0, NULL, 0);
7994 if (rresult == REG_NOMATCH)
7995 fatal_error ("invalid version number %qs", v2);
7996 else if (rresult != 0)
7999 return strverscmp (v1, v2);
8003 /* version_compare built-in spec function.
8005 This takes an argument of the following form:
8007 <comparison-op> <arg1> [<arg2>] <switch> <result>
8009 and produces "result" if the comparison evaluates to true,
8010 and nothing if it doesn't.
8012 The supported <comparison-op> values are:
8014 >= true if switch is a later (or same) version than arg1
8016 < true if switch is an earlier version than arg1
8018 >< true if switch is arg1 or later, and earlier than arg2
8019 <> true if switch is earlier than arg1 or is arg2 or later
8021 If the switch is not present, the condition is false unless
8022 the first character of the <comparison-op> is '!'.
8025 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
8026 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
8029 version_compare_spec_function (int argc, const char **argv)
8033 const char *switch_value = NULL;
8038 fatal_error ("too few arguments to %%:version-compare");
8039 if (argv[0][0] == '\0')
8041 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!')
8043 if (argc != nargs + 3)
8044 fatal_error ("too many arguments to %%:version-compare");
8046 switch_len = strlen (argv[nargs + 1]);
8047 for (i = 0; i < n_switches; i++)
8048 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len)
8049 && check_live_switch (i, switch_len))
8050 switch_value = switches[i].part1 + switch_len;
8052 if (switch_value == NULL)
8056 comp1 = compare_version_strings (switch_value, argv[1]);
8058 comp2 = compare_version_strings (switch_value, argv[2]);
8060 comp2 = -1; /* This value unused. */
8063 switch (argv[0][0] << 8 | argv[0][1])
8065 case '>' << 8 | '=':
8066 result = comp1 >= 0;
8068 case '!' << 8 | '<':
8069 result = comp1 >= 0 || switch_value == NULL;
8074 case '!' << 8 | '>':
8075 result = comp1 < 0 || switch_value == NULL;
8077 case '>' << 8 | '<':
8078 result = comp1 >= 0 && comp2 < 0;
8080 case '<' << 8 | '>':
8081 result = comp1 < 0 || comp2 >= 0;
8085 fatal_error ("unknown operator %qs in %%:version-compare", argv[0]);
8090 return argv[nargs + 2];
8093 /* %:include builtin spec function. This differs from %include in that it
8094 can be nested inside a spec, and thus be conditionalized. It takes
8095 one argument, the filename, and looks for it in the startfile path.
8096 The result is always NULL, i.e. an empty expansion. */
8099 include_spec_function (int argc, const char **argv)
8106 file = find_a_file (&startfile_prefixes, argv[0], R_OK, true);
8107 read_specs (file ? file : argv[0], FALSE);
8112 /* %:find-file spec function. This function replaces its argument by
8113 the file found thru find_file, that is the -print-file-name gcc
8116 find_file_spec_function (int argc, const char **argv)
8123 file = find_file (argv[0]);
8128 /* %:find-plugindir spec function. This function replaces its argument
8129 by the -iplugindir=<dir> option. `dir' is found thru find_file, that
8130 is the -print-file-name gcc program option. */
8132 find_plugindir_spec_function (int argc, const char **argv ATTRIBUTE_UNUSED)
8139 option = concat ("-iplugindir=", find_file ("plugin"), NULL);
8144 /* %:print-asm-header spec function. Print a banner to say that the
8145 following output is from the assembler. */
8148 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED,
8149 const char **argv ATTRIBUTE_UNUSED)
8151 printf (_("Assembler options\n=================\n\n"));
8152 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
8157 /* Get a random number for -frandom-seed */
8159 static unsigned HOST_WIDE_INT
8160 get_random_number (void)
8162 unsigned HOST_WIDE_INT ret = 0;
8165 fd = open ("/dev/urandom", O_RDONLY);
8168 read (fd, &ret, sizeof (HOST_WIDE_INT));
8174 /* Get some more or less random data. */
8175 #ifdef HAVE_GETTIMEOFDAY
8179 gettimeofday (&tv, NULL);
8180 ret = tv.tv_sec * 1000 + tv.tv_usec / 1000;
8184 time_t now = time (NULL);
8186 if (now != (time_t)-1)
8187 ret = (unsigned) now;
8191 return ret ^ getpid();
8194 /* %:compare-debug-dump-opt spec function. Save the last argument,
8195 expected to be the last -fdump-final-insns option, or generate a
8199 compare_debug_dump_opt_spec_function (int arg,
8200 const char **argv ATTRIBUTE_UNUSED)
8205 static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3];
8208 fatal_error ("too many arguments to %%:compare-debug-dump-opt");
8210 do_spec_2 ("%{fdump-final-insns=*:%*}");
8211 do_spec_1 (" ", 0, NULL);
8213 if (VEC_length (const_char_p, argbuf) > 0
8214 && strcmp (argv[VEC_length (const_char_p, argbuf) - 1], "."))
8219 name = xstrdup (argv[VEC_length (const_char_p, argbuf) - 1]);
8224 const char *ext = NULL;
8226 if (VEC_length (const_char_p, argbuf) > 0)
8228 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
8231 else if (!compare_debug)
8234 do_spec_2 ("%g.gkd");
8236 do_spec_1 (" ", 0, NULL);
8238 gcc_assert (VEC_length (const_char_p, argbuf) > 0);
8240 name = concat (VEC_last (const_char_p, argbuf), ext, NULL);
8242 ret = concat ("-fdump-final-insns=", name, NULL);
8245 which = compare_debug < 0;
8246 debug_check_temp_file[which] = name;
8250 unsigned HOST_WIDE_INT value = get_random_number ();
8252 sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value);
8256 ret = concat ("%{!frandom-seed=*:-frandom-seed=", random_seed, "} ",
8265 static const char *debug_auxbase_opt;
8267 /* %:compare-debug-self-opt spec function. Expands to the options
8268 that are to be passed in the second compilation of
8272 compare_debug_self_opt_spec_function (int arg,
8273 const char **argv ATTRIBUTE_UNUSED)
8276 fatal_error ("too many arguments to %%:compare-debug-self-opt");
8278 if (compare_debug >= 0)
8281 do_spec_2 ("%{c|S:%{o*:%*}}");
8282 do_spec_1 (" ", 0, NULL);
8284 if (VEC_length (const_char_p, argbuf) > 0)
8285 debug_auxbase_opt = concat ("-auxbase-strip ",
8286 VEC_last (const_char_p, argbuf),
8289 debug_auxbase_opt = NULL;
8292 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
8293 %<fdump-final-insns=* -w -S -o %j \
8294 %{!fcompare-debug-second:-fcompare-debug-second} \
8295 ", compare_debug_opt, NULL);
8298 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
8299 options that are to be passed in the second compilation of
8300 compare-debug. It expects, as an argument, the basename of the
8301 current input file name, with the .gk suffix appended to it. */
8304 compare_debug_auxbase_opt_spec_function (int arg,
8311 fatal_error ("too few arguments to %%:compare-debug-auxbase-opt");
8314 fatal_error ("too many arguments to %%:compare-debug-auxbase-opt");
8316 if (compare_debug >= 0)
8319 len = strlen (argv[0]);
8320 if (len < 3 || strcmp (argv[0] + len - 3, ".gk") != 0)
8321 fatal_error ("argument to %%:compare-debug-auxbase-opt "
8322 "does not end in .gk");
8324 if (debug_auxbase_opt)
8325 return debug_auxbase_opt;
8327 #define OPT "-auxbase "
8330 name = (char*) xmalloc (sizeof (OPT) + len);
8331 memcpy (name, OPT, sizeof (OPT) - 1);
8332 memcpy (name + sizeof (OPT) - 1, argv[0], len);
8333 name[sizeof (OPT) - 1 + len] = '\0';
8340 /* %:pass-through-libs spec function. Finds all -l options and input
8341 file names in the lib spec passed to it, and makes a list of them
8342 prepended with the plugin option to cause them to be passed through
8343 to the final link after all the new object files have been added. */
8346 pass_through_libs_spec_func (int argc, const char **argv)
8348 char *prepended = xstrdup (" ");
8350 /* Shlemiel the painter's algorithm. Innately horrible, but at least
8351 we know that there will never be more than a handful of strings to
8352 concat, and it's only once per run, so it's not worth optimising. */
8353 for (n = 0; n < argc; n++)
8355 char *old = prepended;
8356 /* Anything that isn't an option is a full path to an output
8357 file; pass it through if it ends in '.a'. Among options,
8359 if (argv[n][0] == '-' && argv[n][1] == 'l')
8361 const char *lopt = argv[n] + 2;
8362 /* Handle both joined and non-joined -l options. If for any
8363 reason there's a trailing -l with no joined or following
8364 arg just discard it. */
8365 if (!*lopt && ++n >= argc)
8369 prepended = concat (prepended, "-plugin-opt=-pass-through=-l",
8372 else if (!strcmp (".a", argv[n] + strlen (argv[n]) - 2))
8374 prepended = concat (prepended, "-plugin-opt=-pass-through=",
8375 argv[n], " ", NULL);
8377 if (prepended != old)
8383 /* Insert backslash before spaces in ORIG (usually a file path), to
8384 avoid being broken by spec parser.
8386 This function is needed as do_spec_1 treats white space (' ' and '\t')
8387 as the end of an argument. But in case of -plugin /usr/gcc install/xxx.so,
8388 the file name should be treated as a single argument rather than being
8389 broken into multiple. Solution is to insert '\\' before the space in a
8392 This function converts and only converts all occurrence of ' '
8393 to '\\' + ' ' and '\t' to '\\' + '\t'. For example:
8397 "a\\ b" -> "a\\\\ b"
8399 orig: input null-terminating string that was allocated by xalloc. The
8400 memory it points to might be freed in this function. Behavior undefined
8401 if ORIG wasn't xalloced or was freed already at entry.
8403 Return: ORIG if no conversion needed. Otherwise a newly allocated string
8404 that was converted from ORIG. */
8407 convert_white_space (char *orig)
8409 int len, number_of_space = 0;
8411 for (len = 0; orig[len]; len++)
8412 if (orig[len] == ' ' || orig[len] == '\t') number_of_space++;
8414 if (number_of_space)
8416 char *new_spec = (char *) xmalloc (len + number_of_space + 1);
8418 for (j = 0, k = 0; j <= len; j++, k++)
8420 if (orig[j] == ' ' || orig[j] == '\t')
8421 new_spec[k++] = '\\';
8422 new_spec[k] = orig[j];