1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
5 Free Software Foundation, Inc.
7 This file is part of GCC.
9 GCC is free software; you can redistribute it and/or modify it under
10 the terms of the GNU General Public License as published by the Free
11 Software Foundation; either version 3, or (at your option) any later
14 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
15 WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 You should have received a copy of the GNU General Public License
20 along with GCC; see the file COPYING3. If not see
21 <http://www.gnu.org/licenses/>. */
23 /* This program is the user interface to the C compiler and possibly to
24 other compilers. It is used because compilation is a complicated procedure
25 which involves running several programs and passing temporary files between
26 them, forwarding the users switches to those programs selectively,
27 and deleting the temporary files at the end.
29 CC recognizes how to compile each input file by suffixes in the file names.
30 Once it knows which kind of compilation to perform, the procedure for
31 compilation is specified by a string called a "spec". */
35 #include "coretypes.h"
36 #include "multilib.h" /* before tm.h */
43 #include "diagnostic.h"
48 /* By default there is no special suffix for target executables. */
49 /* FIXME: when autoconf is fixed, remove the host check - dj */
50 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
51 #define HAVE_TARGET_EXECUTABLE_SUFFIX
54 /* By default there is no special suffix for host executables. */
55 #ifdef HOST_EXECUTABLE_SUFFIX
56 #define HAVE_HOST_EXECUTABLE_SUFFIX
58 #define HOST_EXECUTABLE_SUFFIX ""
61 /* By default, the suffix for target object files is ".o". */
62 #ifdef TARGET_OBJECT_SUFFIX
63 #define HAVE_TARGET_OBJECT_SUFFIX
65 #define TARGET_OBJECT_SUFFIX ".o"
68 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
70 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
71 #ifndef LIBRARY_PATH_ENV
72 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
75 /* If a stage of compilation returns an exit status >= 1,
76 compilation of that file ceases. */
78 #define MIN_FATAL_STATUS 1
80 /* Flag set by cppspec.c to 1. */
83 /* Flag set to nonzero if an @file argument has been supplied to gcc. */
84 static bool at_file_supplied;
86 /* Definition of string containing the arguments given to configure. */
87 #include "configargs.h"
89 /* Flag saying to print the command line options understood by gcc and its
92 static int print_help_list;
94 /* Flag saying to print the version of gcc and its sub-processes. */
96 static int print_version;
98 /* Flag indicating whether we should ONLY print the command and
99 arguments (like verbose_flag) without executing the command.
100 Displayed arguments are quoted so that the generated command
101 line is suitable for execution. This is intended for use in
102 shell scripts to capture the driver-generated command line. */
103 static int verbose_only_flag;
105 /* Flag indicating how to print command line options of sub-processes. */
107 static int print_subprocess_help;
109 /* Whether we should report subprocess execution times to a file. */
111 FILE *report_times_to_file = NULL;
113 /* Nonzero means place this string before uses of /, so that include
114 and library files can be found in an alternate location. */
116 #ifdef TARGET_SYSTEM_ROOT
117 static const char *target_system_root = TARGET_SYSTEM_ROOT;
119 static const char *target_system_root = 0;
122 /* Nonzero means pass the updated target_system_root to the compiler. */
124 static int target_system_root_changed;
126 /* Nonzero means append this string to target_system_root. */
128 static const char *target_sysroot_suffix = 0;
130 /* Nonzero means append this string to target_system_root for headers. */
132 static const char *target_sysroot_hdrs_suffix = 0;
134 /* Nonzero means write "temp" files in source directory
135 and use the source file's name in them, and don't delete them. */
137 static enum save_temps {
138 SAVE_TEMPS_NONE, /* no -save-temps */
139 SAVE_TEMPS_CWD, /* -save-temps in current directory */
140 SAVE_TEMPS_OBJ /* -save-temps in object directory */
143 /* Output file to use to get the object directory for -save-temps=obj */
144 static char *save_temps_prefix = 0;
145 static size_t save_temps_length = 0;
147 /* The compiler version. */
149 static const char *compiler_version;
151 /* The target version. */
153 static const char *const spec_version = DEFAULT_TARGET_VERSION;
155 /* The target machine. */
157 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
159 /* Nonzero if cross-compiling.
160 When -b is used, the value comes from the `specs' file. */
162 #ifdef CROSS_DIRECTORY_STRUCTURE
163 static const char *cross_compile = "1";
165 static const char *cross_compile = "0";
168 /* Greatest exit code of sub-processes that has been encountered up to
170 static int greatest_status = 1;
172 /* This is the obstack which we use to allocate many strings. */
174 static struct obstack obstack;
176 /* This is the obstack to build an environment variable to pass to
177 collect2 that describes all of the relevant switches of what to
178 pass the compiler in building the list of pointers to constructors
181 static struct obstack collect_obstack;
183 /* Forward declaration for prototypes. */
187 static void init_spec (void);
188 static void store_arg (const char *, int, int);
189 static void insert_wrapper (const char *);
190 static char *load_specs (const char *);
191 static void read_specs (const char *, int);
192 static void set_spec (const char *, const char *);
193 static struct compiler *lookup_compiler (const char *, size_t, const char *);
194 static char *build_search_list (const struct path_prefix *, const char *,
196 static void xputenv (const char *);
197 static void putenv_from_prefixes (const struct path_prefix *, const char *,
199 static int access_check (const char *, int);
200 static char *find_a_file (const struct path_prefix *, const char *, int, bool);
201 static void add_prefix (struct path_prefix *, const char *, const char *,
203 static void add_sysrooted_prefix (struct path_prefix *, const char *,
204 const char *, int, int, int);
205 static char *skip_whitespace (char *);
206 static void delete_if_ordinary (const char *);
207 static void delete_temp_files (void);
208 static void delete_failure_queue (void);
209 static void clear_failure_queue (void);
210 static int check_live_switch (int, int);
211 static const char *handle_braces (const char *);
212 static inline bool input_suffix_matches (const char *, const char *);
213 static inline bool switch_matches (const char *, const char *, int);
214 static inline void mark_matching_switches (const char *, const char *, int);
215 static inline void process_marked_switches (void);
216 static const char *process_brace_body (const char *, const char *, const char *, int, int);
217 static const struct spec_function *lookup_spec_function (const char *);
218 static const char *eval_spec_function (const char *, const char *);
219 static const char *handle_spec_function (const char *);
220 static char *save_string (const char *, int);
221 static void set_collect_gcc_options (void);
222 static int do_spec_1 (const char *, int, const char *);
223 static int do_spec_2 (const char *);
224 static void do_option_spec (const char *, const char *);
225 static void do_self_spec (const char *);
226 static const char *find_file (const char *);
227 static int is_directory (const char *, bool);
228 static const char *validate_switches (const char *);
229 static void validate_all_switches (void);
230 static inline void validate_switches_from_spec (const char *);
231 static void give_switch (int, int);
232 static int used_arg (const char *, int);
233 static int default_arg (const char *, int);
234 static void set_multilib_dir (void);
235 static void print_multilib_info (void);
236 static void perror_with_name (const char *);
237 static void display_help (void);
238 static void add_preprocessor_option (const char *, int);
239 static void add_assembler_option (const char *, int);
240 static void add_linker_option (const char *, int);
241 static void process_command (unsigned int, struct cl_decoded_option *);
242 static int execute (void);
243 static void alloc_args (void);
244 static void clear_args (void);
245 static void fatal_signal (int);
246 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
247 static void init_gcc_specs (struct obstack *, const char *, const char *,
250 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
251 static const char *convert_filename (const char *, int, int);
254 static const char *getenv_spec_function (int, const char **);
255 static const char *if_exists_spec_function (int, const char **);
256 static const char *if_exists_else_spec_function (int, const char **);
257 static const char *replace_outfile_spec_function (int, const char **);
258 static const char *remove_outfile_spec_function (int, const char **);
259 static const char *version_compare_spec_function (int, const char **);
260 static const char *include_spec_function (int, const char **);
261 static const char *find_file_spec_function (int, const char **);
262 static const char *find_plugindir_spec_function (int, const char **);
263 static const char *print_asm_header_spec_function (int, const char **);
264 static const char *compare_debug_dump_opt_spec_function (int, const char **);
265 static const char *compare_debug_self_opt_spec_function (int, const char **);
266 static const char *compare_debug_auxbase_opt_spec_function (int, const char **);
267 static const char *pass_through_libs_spec_func (int, const char **);
269 /* The Specs Language
271 Specs are strings containing lines, each of which (if not blank)
272 is made up of a program name, and arguments separated by spaces.
273 The program name must be exact and start from root, since no path
274 is searched and it is unreliable to depend on the current working directory.
275 Redirection of input or output is not supported; the subprograms must
276 accept filenames saying what files to read and write.
278 In addition, the specs can contain %-sequences to substitute variable text
279 or for conditional text. Here is a table of all defined %-sequences.
280 Note that spaces are not generated automatically around the results of
281 expanding these sequences; therefore, you can concatenate them together
282 or with constant text in a single argument.
284 %% substitute one % into the program name or argument.
285 %i substitute the name of the input file being processed.
286 %b substitute the basename of the input file being processed.
287 This is the substring up to (and not including) the last period
288 and not including the directory unless -save-temps was specified
289 to put temporaries in a different location.
290 %B same as %b, but include the file suffix (text after the last period).
292 substitute a file name that has suffix SUFFIX and is chosen
293 once per compilation, and mark the argument a la %d. To reduce
294 exposure to denial-of-service attacks, the file name is now
295 chosen in a way that is hard to predict even when previously
296 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
297 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
298 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
299 had been pre-processed. Previously, %g was simply substituted
300 with a file name chosen once per compilation, without regard
301 to any appended suffix (which was therefore treated just like
302 ordinary text), making such attacks more likely to succeed.
304 like %g, but if -pipe is in effect, expands simply to "-".
306 like %g, but if -pipe is in effect, expands to nothing. (We have both
307 %| and %m to accommodate differences between system assemblers; see
308 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
310 like %g, but generates a new temporary file name even if %uSUFFIX
313 substitutes the last file name generated with %uSUFFIX, generating a
314 new one if there is no such last file name. In the absence of any
315 %uSUFFIX, this is just like %gSUFFIX, except they don't share
316 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
317 would involve the generation of two distinct file names, one
318 for each `%g.s' and another for each `%U.s'. Previously, %U was
319 simply substituted with a file name chosen for the previous %u,
320 without regard to any appended suffix.
322 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
323 writable, and if save-temps is off; otherwise, substitute the name
324 of a temporary file, just like %u. This temporary file is not
325 meant for communication between processes, but rather as a junk
328 substitutes .SUFFIX for the suffixes of a matched switch's args when
329 it is subsequently output with %*. SUFFIX is terminated by the next
331 %d marks the argument containing or following the %d as a
332 temporary file name, so that that file will be deleted if GCC exits
333 successfully. Unlike %g, this contributes no text to the argument.
334 %w marks the argument containing or following the %w as the
335 "output file" of this compilation. This puts the argument
336 into the sequence of arguments that %o will substitute later.
337 %V indicates that this compilation produces no "output file".
339 like %{...} but mark last argument supplied within
340 as a file to be deleted on failure.
341 %o substitutes the names of all the output files, with spaces
342 automatically placed around them. You should write spaces
343 around the %o as well or the results are undefined.
344 %o is for use in the specs for running the linker.
345 Input files whose names have no recognized suffix are not compiled
346 at all, but they are included among the output files, so they will
348 %O substitutes the suffix for object files. Note that this is
349 handled specially when it immediately follows %g, %u, or %U
350 (with or without a suffix argument) because of the need for
351 those to form complete file names. The handling is such that
352 %O is treated exactly as if it had already been substituted,
353 except that %g, %u, and %U do not currently support additional
354 SUFFIX characters following %O as they would following, for
356 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
357 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
358 and -B options) and -imultilib as necessary.
359 %s current argument is the name of a library or startup file of some sort.
360 Search for that file in a standard list of directories
361 and substitute the full name found.
362 %eSTR Print STR as an error message. STR is terminated by a newline.
363 Use this when inconsistent options are detected.
364 %nSTR Print STR as a notice. STR is terminated by a newline.
365 %x{OPTION} Accumulate an option for %X.
366 %X Output the accumulated linker options specified by compilations.
367 %Y Output the accumulated assembler options specified by compilations.
368 %Z Output the accumulated preprocessor options specified by compilations.
369 %a process ASM_SPEC as a spec.
370 This allows config.h to specify part of the spec for running as.
371 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
372 used here. This can be used to run a post-processor after the
373 assembler has done its job.
374 %D Dump out a -L option for each directory in startfile_prefixes.
375 If multilib_dir is set, extra entries are generated with it affixed.
376 %l process LINK_SPEC as a spec.
377 %L process LIB_SPEC as a spec.
378 %G process LIBGCC_SPEC as a spec.
379 %R Output the concatenation of target_system_root and
380 target_sysroot_suffix.
381 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
382 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
383 %C process CPP_SPEC as a spec.
384 %1 process CC1_SPEC as a spec.
385 %2 process CC1PLUS_SPEC as a spec.
386 %* substitute the variable part of a matched option. (See below.)
387 Note that each comma in the substituted string is replaced by
389 %<S remove all occurrences of -S from the command line.
390 Note - this command is position dependent. % commands in the
391 spec string before this one will see -S, % commands in the
392 spec string after this one will not.
393 %>S Similar to "%<S", but keep it in the GCC command line.
394 %<S* remove all occurrences of all switches beginning with -S from the
397 Call the named function FUNCTION, passing it ARGS. ARGS is
398 first processed as a nested spec string, then split into an
399 argument vector in the usual fashion. The function returns
400 a string which is processed as if it had appeared literally
401 as part of the current spec.
402 %{S} substitutes the -S switch, if that switch was given to GCC.
403 If that switch was not specified, this substitutes nothing.
404 Here S is a metasyntactic variable.
405 %{S*} substitutes all the switches specified to GCC whose names start
406 with -S. This is used for -o, -I, etc; switches that take
407 arguments. GCC considers `-o foo' as being one switch whose
408 name starts with `o'. %{o*} would substitute this text,
409 including the space; thus, two arguments would be generated.
410 %{S*&T*} likewise, but preserve order of S and T options (the order
411 of S and T in the spec is not significant). Can be any number
412 of ampersand-separated variables; for each the wild card is
413 optional. Useful for CPP as %{D*&U*&A*}.
415 %{S:X} substitutes X, if the -S switch was given to GCC.
416 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
417 %{S*:X} substitutes X if one or more switches whose names start
418 with -S was given to GCC. Normally X is substituted only
419 once, no matter how many such switches appeared. However,
420 if %* appears somewhere in X, then X will be substituted
421 once for each matching switch, with the %* replaced by the
422 part of that switch that matched the '*'.
423 %{.S:X} substitutes X, if processing a file with suffix S.
424 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
425 %{,S:X} substitutes X, if processing a file which will use spec S.
426 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
428 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
429 combined with '!', '.', ',', and '*' as above binding stronger
431 If %* appears in X, all of the alternatives must be starred, and
432 only the first matching alternative is substituted.
433 %{S:X; if S was given to GCC, substitutes X;
434 T:Y; else if T was given to GCC, substitutes Y;
435 :D} else substitutes D. There can be as many clauses as you need.
436 This may be combined with '.', '!', ',', '|', and '*' as above.
438 %(Spec) processes a specification defined in a specs file as *Spec:
439 %[Spec] as above, but put __ around -D arguments
441 The conditional text X in a %{S:X} or similar construct may contain
442 other nested % constructs or spaces, or even newlines. They are
443 processed as usual, as described above. Trailing white space in X is
444 ignored. White space may also appear anywhere on the left side of the
445 colon in these constructs, except between . or * and the corresponding
448 The -O, -f, -m, and -W switches are handled specifically in these
449 constructs. If another value of -O or the negated form of a -f, -m, or
450 -W switch is found later in the command line, the earlier switch
451 value is ignored, except with {S*} where S is just one letter; this
452 passes all matching options.
454 The character | at the beginning of the predicate text is used to indicate
455 that a command should be piped to the following command, but only if -pipe
458 Note that it is built into GCC which switches take arguments and which
459 do not. You might think it would be useful to generalize this to
460 allow each compiler's spec to say which switches take arguments. But
461 this cannot be done in a consistent fashion. GCC cannot even decide
462 which input files have been specified without knowing which switches
463 take arguments, and it must know which input files to compile in order
464 to tell which compilers to run.
466 GCC also knows implicitly that arguments starting in `-l' are to be
467 treated as compiler output files, and passed to the linker in their
468 proper position among the other output files. */
470 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
472 /* config.h can define ASM_SPEC to provide extra args to the assembler
473 or extra switch-translations. */
478 /* config.h can define ASM_FINAL_SPEC to run a post processor after
479 the assembler has run. */
480 #ifndef ASM_FINAL_SPEC
481 #define ASM_FINAL_SPEC ""
484 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
485 or extra switch-translations. */
490 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
491 or extra switch-translations. */
496 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
497 or extra switch-translations. */
499 #define CC1PLUS_SPEC ""
502 /* config.h can define LINK_SPEC to provide extra args to the linker
503 or extra switch-translations. */
508 /* config.h can define LIB_SPEC to override the default libraries. */
510 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
515 /* XXX: valid only for GNU ld */
516 /* XXX: should exactly match hooks provided by libmudflap.a */
517 #define MFWRAP_SPEC " %{static: %{fmudflap|fmudflapth: \
518 --wrap=malloc --wrap=free --wrap=calloc --wrap=realloc\
519 --wrap=mmap --wrap=munmap --wrap=alloca\
520 } %{fmudflapth: --wrap=pthread_create\
521 }} %{fmudflap|fmudflapth: --wrap=main}"
524 #define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}"
527 /* When using -fsplit-stack we need to wrap pthread_create, in order
528 to initialize the stack guard. We always use wrapping, rather than
529 shared library ordering, and we keep the wrapper function in
530 libgcc. This is not yet a real spec, though it could become one;
531 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping
532 only works with GNU ld and gold. FIXME: This is incompatible with
533 -fmudflap when linking statically, which wants to do its own
535 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}"
537 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
540 #if defined(REAL_LIBGCC_SPEC)
541 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
542 #elif defined(LINK_LIBGCC_SPECIAL_1)
543 /* Have gcc do the search for libgcc.a. */
544 #define LIBGCC_SPEC "libgcc.a%s"
546 #define LIBGCC_SPEC "-lgcc"
550 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
551 #ifndef STARTFILE_SPEC
552 #define STARTFILE_SPEC \
553 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
556 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
558 #define ENDFILE_SPEC ""
562 #define LINKER_NAME "collect2"
565 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
566 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
571 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
573 #ifndef ASM_DEBUG_SPEC
574 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
575 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
576 # define ASM_DEBUG_SPEC \
577 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
578 ? "%{!g0:%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}}" ASM_MAP \
579 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
581 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
582 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
584 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
585 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
589 #ifndef ASM_DEBUG_SPEC
590 # define ASM_DEBUG_SPEC ""
593 /* Here is the spec for running the linker, after compiling all files. */
595 /* This is overridable by the target in case they need to specify the
596 -lgcc and -lc order specially, yet not require them to override all
597 of LINK_COMMAND_SPEC. */
598 #ifndef LINK_GCC_C_SEQUENCE_SPEC
599 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
602 #ifndef LINK_SSP_SPEC
603 #ifdef TARGET_LIBC_PROVIDES_SSP
604 #define LINK_SSP_SPEC "%{fstack-protector:}"
606 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}"
610 #ifndef LINK_PIE_SPEC
612 #define LINK_PIE_SPEC "%{pie:-pie} "
614 #define LINK_PIE_SPEC "%{pie:} "
618 #ifndef LINK_BUILDID_SPEC
619 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
620 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
624 /* Conditional to test whether plugin is used or not.
625 FIXME: For slim LTO we will need to enable plugin unconditionally. This
626 still cause problems with PLUGIN_LD != LD and when plugin is built but
627 not useable. For GCC 4.6 we don't support slim LTO and thus we can enable
628 plugin only when LTO is enabled. We still honor explicit
629 -fuse-linker-plugin. */
630 #ifdef HAVE_LTO_PLUGIN
631 #define PLUGIN_COND "!fno-use-linker-plugin:%{flto|flto=*|fuse-linker-plugin"
632 #define PLUGIN_COND_CLOSE "}"
634 #define PLUGIN_COND "fuse-linker-plugin"
635 #define PLUGIN_COND_CLOSE ""
639 /* -u* was put back because both BSD and SysV seem to support it. */
640 /* %{static:} simply prevents an error message if the target machine
641 doesn't handle -static. */
642 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
643 scripts which exist in user specified directories, or in standard
645 /* We pass any -flto flags on to the linker, which is expected
646 to understand them. In practice, this means it had better be collect2. */
647 /* %{e*} includes -export-dynamic; see comment in common.opt. */
648 #ifndef LINK_COMMAND_SPEC
649 #define LINK_COMMAND_SPEC "\
650 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
653 -plugin %(linker_plugin_file) \
654 -plugin-opt=%(lto_wrapper) \
655 -plugin-opt=-fresolution=%u.res \
656 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
657 }"PLUGIN_COND_CLOSE" \
658 %{flto|flto=*:%<fcompare-debug*} \
659 %{flto} %{flto=*} %l " LINK_PIE_SPEC \
660 "%X %{o*} %{e*} %{N} %{n} %{r}\
661 %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}}\
662 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
663 %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
664 %(mflib) " STACK_SPLIT_SPEC "\
665 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov}\
666 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
667 %{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}"
670 #ifndef LINK_LIBGCC_SPEC
671 /* Generate -L options for startfile prefix list. */
672 # define LINK_LIBGCC_SPEC "%D"
675 #ifndef STARTFILE_PREFIX_SPEC
676 # define STARTFILE_PREFIX_SPEC ""
680 # define SYSROOT_SPEC "--sysroot=%R"
683 #ifndef SYSROOT_SUFFIX_SPEC
684 # define SYSROOT_SUFFIX_SPEC ""
687 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
688 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
691 static const char *asm_debug;
692 static const char *cpp_spec = CPP_SPEC;
693 static const char *cc1_spec = CC1_SPEC;
694 static const char *cc1plus_spec = CC1PLUS_SPEC;
695 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
696 static const char *link_ssp_spec = LINK_SSP_SPEC;
697 static const char *asm_spec = ASM_SPEC;
698 static const char *asm_final_spec = ASM_FINAL_SPEC;
699 static const char *link_spec = LINK_SPEC;
700 static const char *lib_spec = LIB_SPEC;
701 static const char *mfwrap_spec = MFWRAP_SPEC;
702 static const char *mflib_spec = MFLIB_SPEC;
703 static const char *link_gomp_spec = "";
704 static const char *libgcc_spec = LIBGCC_SPEC;
705 static const char *endfile_spec = ENDFILE_SPEC;
706 static const char *startfile_spec = STARTFILE_SPEC;
707 static const char *linker_name_spec = LINKER_NAME;
708 static const char *linker_plugin_file_spec = "";
709 static const char *lto_wrapper_spec = "";
710 static const char *lto_gcc_spec = "";
711 static const char *link_command_spec = LINK_COMMAND_SPEC;
712 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
713 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
714 static const char *sysroot_spec = SYSROOT_SPEC;
715 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
716 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
718 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
719 There should be no need to override these in target dependent files,
720 but we need to copy them to the specs file so that newer versions
721 of the GCC driver can correctly drive older tool chains with the
722 appropriate -B options. */
724 /* When cpplib handles traditional preprocessing, get rid of this, and
725 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
726 that we default the front end language better. */
727 static const char *trad_capable_cpp =
728 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}";
730 /* We don't wrap .d files in %W{} since a missing .d file, and
731 therefore no dependency entry, confuses make into thinking a .o
732 file that happens to exist is up-to-date. */
733 static const char *cpp_unique_options =
734 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
735 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
736 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
737 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
738 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
739 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
740 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
741 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
742 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
743 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
746 /* This contains cpp options which are common with cc1_options and are passed
747 only when preprocessing only to avoid duplication. We pass the cc1 spec
748 options to the preprocessor so that it the cc1 spec may manipulate
749 options used to set target flags. Those special target flags settings may
750 in turn cause preprocessor symbols to be defined specially. */
751 static const char *cpp_options =
752 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
753 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
754 %{undef} %{save-temps*:-fpch-preprocess}";
756 /* This contains cpp options which are not passed when the preprocessor
757 output will be used by another program. */
758 static const char *cpp_debug_options = "%{d*}";
760 /* NB: This is shared amongst all front-ends, except for Ada. */
761 static const char *cc1_options =
762 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
763 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
764 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
765 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
766 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
767 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
768 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
769 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\
770 %{-target-help:--target-help}\
771 %{-version:--version}\
772 %{-help=*:--help=%*}\
773 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
774 %{fsyntax-only:-o %j} %{-param*}\
775 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\
776 %{coverage:-fprofile-arcs -ftest-coverage}";
778 static const char *asm_options =
779 "%{-target-help:%:print-asm-header()} "
781 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
782 to the assembler equivalents. */
783 "%{v} %{w:-W} %{I*} "
785 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
787 static const char *invoke_as =
788 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
790 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
791 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
795 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
796 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
800 /* Some compilers have limits on line lengths, and the multilib_select
801 and/or multilib_matches strings can be very long, so we build them at
803 static struct obstack multilib_obstack;
804 static const char *multilib_select;
805 static const char *multilib_matches;
806 static const char *multilib_defaults;
807 static const char *multilib_exclusions;
809 /* Check whether a particular argument is a default argument. */
811 #ifndef MULTILIB_DEFAULTS
812 #define MULTILIB_DEFAULTS { "" }
815 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
817 #ifndef DRIVER_SELF_SPECS
818 #define DRIVER_SELF_SPECS ""
821 /* Adding -fopenmp should imply pthreads. This is particularly important
822 for targets that use different start files and suchlike. */
823 #ifndef GOMP_SELF_SPECS
824 #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}"
827 static const char *const driver_self_specs[] = {
828 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
829 DRIVER_SELF_SPECS, CONFIGURE_SPECS, GOMP_SELF_SPECS
832 #ifndef OPTION_DEFAULT_SPECS
833 #define OPTION_DEFAULT_SPECS { "", "" }
842 static const struct default_spec
843 option_default_specs[] = { OPTION_DEFAULT_SPECS };
847 struct user_specs *next;
848 const char *filename;
851 static struct user_specs *user_specs_head, *user_specs_tail;
854 /* Record the mapping from file suffixes for compilation specs. */
858 const char *suffix; /* Use this compiler for input files
859 whose names end in this suffix. */
861 const char *spec; /* To use this compiler, run this spec. */
863 const char *cpp_spec; /* If non-NULL, substitute this spec
864 for `%C', rather than the usual
866 const int combinable; /* If nonzero, compiler can deal with
867 multiple source files at once (IMA). */
868 const int needs_preprocessing; /* If nonzero, source files need to
869 be run through a preprocessor. */
872 /* Pointer to a vector of `struct compiler' that gives the spec for
873 compiling a file, based on its suffix.
874 A file that does not end in any of these suffixes will be passed
875 unchanged to the loader and nothing else will be done to it.
877 An entry containing two 0s is used to terminate the vector.
879 If multiple entries match a file, the last matching one is used. */
881 static struct compiler *compilers;
883 /* Number of entries in `compilers', not counting the null terminator. */
885 static int n_compilers;
887 /* The default list of file name suffixes and their compilation specs. */
889 static const struct compiler default_compilers[] =
891 /* Add lists of suffixes of known languages here. If those languages
892 were not present when we built the driver, we will hit these copies
893 and be given a more meaningful error than "file not used since
894 linking is not done". */
895 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
896 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
897 {".mii", "#Objective-C++", 0, 0, 0},
898 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
899 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
900 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
901 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
902 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
903 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
904 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
905 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
906 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
907 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
908 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
909 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
910 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
911 {".r", "#Ratfor", 0, 0, 0},
912 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
913 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
914 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
915 {".go", "#Go", 0, 1, 0},
916 /* Next come the entries for C. */
917 {".c", "@c", 0, 0, 1},
919 /* cc1 has an integrated ISO C preprocessor. We should invoke the
920 external preprocessor if -save-temps is given. */
921 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
924 %eGNU C no longer supports -traditional without -E}\
925 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
926 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
927 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
929 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
930 cc1 %(cpp_unique_options) %(cc1_options)}}}\
931 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
933 "%{!E:%e-E or -x required when input is from standard input}\
934 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
935 {".h", "@c-header", 0, 0, 0},
937 /* cc1 has an integrated ISO C preprocessor. We should invoke the
938 external preprocessor if -save-temps is given. */
939 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
941 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
942 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
943 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
945 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
946 %W{o*:--output-pch=%*}}%V}\
947 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
948 cc1 %(cpp_unique_options) %(cc1_options)\
949 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
950 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
951 {".i", "@cpp-output", 0, 0, 0},
953 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
954 {".s", "@assembler", 0, 0, 0},
956 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
957 {".sx", "@assembler-with-cpp", 0, 0, 0},
958 {".S", "@assembler-with-cpp", 0, 0, 0},
959 {"@assembler-with-cpp",
960 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
961 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
962 %{E|M|MM:%(cpp_debug_options)}\
963 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
964 as %(asm_debug) %(asm_options) %|.s %A }}}}"
966 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
967 %{E|M|MM:%(cpp_debug_options)}\
968 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
969 as %(asm_debug) %(asm_options) %m.s %A }}}}"
974 /* Mark end of table. */
978 /* Number of elements in default_compilers, not counting the terminator. */
980 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
982 typedef char *char_p; /* For DEF_VEC_P. */
984 DEF_VEC_ALLOC_P(char_p,heap);
986 /* A vector of options to give to the linker.
987 These options are accumulated by %x,
988 and substituted into the linker command with %X. */
989 static VEC(char_p,heap) *linker_options;
991 /* A vector of options to give to the assembler.
992 These options are accumulated by -Wa,
993 and substituted into the assembler command with %Y. */
994 static VEC(char_p,heap) *assembler_options;
996 /* A vector of options to give to the preprocessor.
997 These options are accumulated by -Wp,
998 and substituted into the preprocessor command with %Z. */
999 static VEC(char_p,heap) *preprocessor_options;
1002 skip_whitespace (char *p)
1006 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1007 be considered whitespace. */
1008 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1010 else if (*p == '\n' || *p == ' ' || *p == '\t')
1024 /* Structures to keep track of prefixes to try when looking for files. */
1028 const char *prefix; /* String to prepend to the path. */
1029 struct prefix_list *next; /* Next in linked list. */
1030 int require_machine_suffix; /* Don't use without machine_suffix. */
1031 /* 2 means try both machine_suffix and just_machine_suffix. */
1032 int priority; /* Sort key - priority within list. */
1033 int os_multilib; /* 1 if OS multilib scheme should be used,
1034 0 for GCC multilib scheme. */
1039 struct prefix_list *plist; /* List of prefixes to try */
1040 int max_len; /* Max length of a prefix in PLIST */
1041 const char *name; /* Name of this list (used in config stuff) */
1044 /* List of prefixes to try when looking for executables. */
1046 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1048 /* List of prefixes to try when looking for startup (crt0) files. */
1050 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1052 /* List of prefixes to try when looking for include files. */
1054 static struct path_prefix include_prefixes = { 0, 0, "include" };
1056 /* Suffix to attach to directories searched for commands.
1057 This looks like `MACHINE/VERSION/'. */
1059 static const char *machine_suffix = 0;
1061 /* Suffix to attach to directories searched for commands.
1062 This is just `MACHINE/'. */
1064 static const char *just_machine_suffix = 0;
1066 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1068 static const char *gcc_exec_prefix;
1070 /* Adjusted value of standard_libexec_prefix. */
1072 static const char *gcc_libexec_prefix;
1074 /* Default prefixes to attach to command names. */
1076 #ifndef STANDARD_STARTFILE_PREFIX_1
1077 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1079 #ifndef STANDARD_STARTFILE_PREFIX_2
1080 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1083 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1084 #undef MD_EXEC_PREFIX
1085 #undef MD_STARTFILE_PREFIX
1086 #undef MD_STARTFILE_PREFIX_1
1089 /* If no prefixes defined, use the null string, which will disable them. */
1090 #ifndef MD_EXEC_PREFIX
1091 #define MD_EXEC_PREFIX ""
1093 #ifndef MD_STARTFILE_PREFIX
1094 #define MD_STARTFILE_PREFIX ""
1096 #ifndef MD_STARTFILE_PREFIX_1
1097 #define MD_STARTFILE_PREFIX_1 ""
1100 /* These directories are locations set at configure-time based on the
1101 --prefix option provided to configure. Their initializers are
1102 defined in Makefile.in. These paths are not *directly* used when
1103 gcc_exec_prefix is set because, in that case, we know where the
1104 compiler has been installed, and use paths relative to that
1105 location instead. */
1106 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1107 static const char *const standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1108 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1109 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1111 /* For native compilers, these are well-known paths containing
1112 components that may be provided by the system. For cross
1113 compilers, these paths are not used. */
1114 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1115 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1116 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1117 static const char *const standard_startfile_prefix_1
1118 = STANDARD_STARTFILE_PREFIX_1;
1119 static const char *const standard_startfile_prefix_2
1120 = STANDARD_STARTFILE_PREFIX_2;
1122 /* A relative path to be used in finding the location of tools
1123 relative to the driver. */
1124 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1126 /* Subdirectory to use for locating libraries. Set by
1127 set_multilib_dir based on the compilation options. */
1129 static const char *multilib_dir;
1131 /* Subdirectory to use for locating libraries in OS conventions. Set by
1132 set_multilib_dir based on the compilation options. */
1134 static const char *multilib_os_dir;
1136 /* Subdirectory to use for locating libraries in multiarch conventions. Set by
1137 set_multilib_dir based on the compilation options. */
1139 static const char *multiarch_dir;
1141 /* Structure to keep track of the specs that have been defined so far.
1142 These are accessed using %(specname) or %[specname] in a compiler
1147 /* The following 2 fields must be first */
1148 /* to allow EXTRA_SPECS to be initialized */
1149 const char *name; /* name of the spec. */
1150 const char *ptr; /* available ptr if no static pointer */
1152 /* The following fields are not initialized */
1153 /* by EXTRA_SPECS */
1154 const char **ptr_spec; /* pointer to the spec itself. */
1155 struct spec_list *next; /* Next spec in linked list. */
1156 int name_len; /* length of the name */
1157 int alloc_p; /* whether string was allocated */
1160 #define INIT_STATIC_SPEC(NAME,PTR) \
1161 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1163 /* List of statically defined specs. */
1164 static struct spec_list static_specs[] =
1166 INIT_STATIC_SPEC ("asm", &asm_spec),
1167 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1168 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1169 INIT_STATIC_SPEC ("asm_options", &asm_options),
1170 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1171 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1172 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1173 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1174 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1175 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1176 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1177 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1178 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1179 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1180 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec),
1181 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1182 INIT_STATIC_SPEC ("link", &link_spec),
1183 INIT_STATIC_SPEC ("lib", &lib_spec),
1184 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec),
1185 INIT_STATIC_SPEC ("mflib", &mflib_spec),
1186 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec),
1187 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1188 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1189 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1190 INIT_STATIC_SPEC ("version", &compiler_version),
1191 INIT_STATIC_SPEC ("multilib", &multilib_select),
1192 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1193 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1194 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1195 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1196 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1197 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1198 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec),
1199 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec),
1200 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec),
1201 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1202 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1203 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1204 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1205 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1206 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec),
1207 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1208 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1211 #ifdef EXTRA_SPECS /* additional specs needed */
1212 /* Structure to keep track of just the first two args of a spec_list.
1213 That is all that the EXTRA_SPECS macro gives us. */
1216 const char *const name;
1217 const char *const ptr;
1220 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1221 static struct spec_list *extra_specs = (struct spec_list *) 0;
1224 /* List of dynamically allocates specs that have been defined so far. */
1226 static struct spec_list *specs = (struct spec_list *) 0;
1228 /* List of static spec functions. */
1230 static const struct spec_function static_spec_functions[] =
1232 { "getenv", getenv_spec_function },
1233 { "if-exists", if_exists_spec_function },
1234 { "if-exists-else", if_exists_else_spec_function },
1235 { "replace-outfile", replace_outfile_spec_function },
1236 { "remove-outfile", remove_outfile_spec_function },
1237 { "version-compare", version_compare_spec_function },
1238 { "include", include_spec_function },
1239 { "find-file", find_file_spec_function },
1240 { "find-plugindir", find_plugindir_spec_function },
1241 { "print-asm-header", print_asm_header_spec_function },
1242 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function },
1243 { "compare-debug-self-opt", compare_debug_self_opt_spec_function },
1244 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function },
1245 { "pass-through-libs", pass_through_libs_spec_func },
1246 #ifdef EXTRA_SPEC_FUNCTIONS
1247 EXTRA_SPEC_FUNCTIONS
1252 static int processing_spec_function;
1254 /* Add appropriate libgcc specs to OBSTACK, taking into account
1255 various permutations of -shared-libgcc, -shared, and such. */
1257 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1259 #ifndef USE_LD_AS_NEEDED
1260 #define USE_LD_AS_NEEDED 0
1264 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1265 const char *static_name, const char *eh_name)
1269 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}"
1270 "%{!static:%{!static-libgcc:"
1271 #if USE_LD_AS_NEEDED
1272 "%{!shared-libgcc:",
1273 static_name, " --as-needed ", shared_name, " --no-as-needed"
1276 shared_name, "%{!shared: ", static_name, "}"
1280 "%{!shared-libgcc:", static_name, " ", eh_name, "}"
1281 "%{shared-libgcc:", shared_name, " ", static_name, "}"
1285 "%{shared-libgcc:", shared_name, "}"
1286 "%{!shared-libgcc:", static_name, "}"
1289 "%{shared:", shared_name, "}"
1294 obstack_grow (obstack, buf, strlen (buf));
1297 #endif /* ENABLE_SHARED_LIBGCC */
1299 /* Initialize the specs lookup routines. */
1304 struct spec_list *next = (struct spec_list *) 0;
1305 struct spec_list *sl = (struct spec_list *) 0;
1309 return; /* Already initialized. */
1312 fnotice (stderr, "Using built-in specs.\n");
1315 extra_specs = XCNEWVEC (struct spec_list, ARRAY_SIZE (extra_specs_1));
1317 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1319 sl = &extra_specs[i];
1320 sl->name = extra_specs_1[i].name;
1321 sl->ptr = extra_specs_1[i].ptr;
1323 sl->name_len = strlen (sl->name);
1324 sl->ptr_spec = &sl->ptr;
1329 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1331 sl = &static_specs[i];
1336 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1337 /* ??? If neither -shared-libgcc nor --static-libgcc was
1338 seen, then we should be making an educated guess. Some proposed
1339 heuristics for ELF include:
1341 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1342 program will be doing dynamic loading, which will likely
1343 need the shared libgcc.
1345 (2) If "-ldl", then it's also a fair bet that we're doing
1348 (3) For each ET_DYN we're linking against (either through -lfoo
1349 or /some/path/foo.so), check to see whether it or one of
1350 its dependencies depends on a shared libgcc.
1354 If the runtime is fixed to look for program headers instead
1355 of calling __register_frame_info at all, for each object,
1356 use the shared libgcc if any EH symbol referenced.
1358 If crtstuff is fixed to not invoke __register_frame_info
1359 automatically, for each object, use the shared libgcc if
1360 any non-empty unwind section found.
1362 Doing any of this probably requires invoking an external program to
1363 do the actual object file scanning. */
1365 const char *p = libgcc_spec;
1368 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1369 when given the proper command line arguments. */
1372 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1374 init_gcc_specs (&obstack,
1376 #ifdef USE_LIBUNWIND_EXCEPTIONS
1382 #ifdef USE_LIBUNWIND_EXCEPTIONS
1383 # ifdef HAVE_LD_STATIC_DYNAMIC
1384 " %{!static:" LD_STATIC_OPTION "} -lunwind"
1385 " %{!static:" LD_DYNAMIC_OPTION "}"
1395 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1397 /* Ug. We don't know shared library extensions. Hope that
1398 systems that use this form don't do shared libraries. */
1399 init_gcc_specs (&obstack,
1403 #ifdef USE_LIBUNWIND_EXCEPTIONS
1412 obstack_1grow (&obstack, *p);
1413 in_sep = (*p == ' ');
1418 obstack_1grow (&obstack, '\0');
1419 libgcc_spec = XOBFINISH (&obstack, const char *);
1422 #ifdef USE_AS_TRADITIONAL_FORMAT
1423 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1425 static const char tf[] = "--traditional-format ";
1426 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1427 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1428 asm_spec = XOBFINISH (&obstack, const char *);
1432 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC
1433 # ifdef LINK_BUILDID_SPEC
1434 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1435 obstack_grow (&obstack, LINK_BUILDID_SPEC, sizeof(LINK_BUILDID_SPEC) - 1);
1437 # ifdef LINK_EH_SPEC
1438 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1439 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1441 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1442 link_spec = XOBFINISH (&obstack, const char *);
1448 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1449 removed; If the spec starts with a + then SPEC is added to the end of the
1453 set_spec (const char *name, const char *spec)
1455 struct spec_list *sl;
1456 const char *old_spec;
1457 int name_len = strlen (name);
1460 /* If this is the first call, initialize the statically allocated specs. */
1463 struct spec_list *next = (struct spec_list *) 0;
1464 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1466 sl = &static_specs[i];
1473 /* See if the spec already exists. */
1474 for (sl = specs; sl; sl = sl->next)
1475 if (name_len == sl->name_len && !strcmp (sl->name, name))
1480 /* Not found - make it. */
1481 sl = XNEW (struct spec_list);
1482 sl->name = xstrdup (name);
1483 sl->name_len = name_len;
1484 sl->ptr_spec = &sl->ptr;
1486 *(sl->ptr_spec) = "";
1491 old_spec = *(sl->ptr_spec);
1492 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1493 ? concat (old_spec, spec + 1, NULL)
1498 fnotice (stderr, "Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1501 /* Free the old spec. */
1502 if (old_spec && sl->alloc_p)
1503 free (CONST_CAST(char *, old_spec));
1508 /* Accumulate a command (program name and args), and run it. */
1510 typedef const char *const_char_p; /* For DEF_VEC_P. */
1511 DEF_VEC_P(const_char_p);
1512 DEF_VEC_ALLOC_P(const_char_p,heap);
1514 /* Vector of pointers to arguments in the current line of specifications. */
1516 static VEC(const_char_p,heap) *argbuf;
1518 /* Position in the argbuf vector containing the name of the output file
1519 (the value associated with the "-o" flag). */
1521 static int have_o_argbuf_index = 0;
1523 /* Were the options -c, -S or -E passed. */
1524 static int have_c = 0;
1526 /* Was the option -o passed. */
1527 static int have_o = 0;
1529 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1530 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1533 static struct temp_name {
1534 const char *suffix; /* suffix associated with the code. */
1535 int length; /* strlen (suffix). */
1536 int unique; /* Indicates whether %g or %u/%U was used. */
1537 const char *filename; /* associated filename. */
1538 int filename_length; /* strlen (filename). */
1539 struct temp_name *next;
1542 /* Number of commands executed so far. */
1544 static int execution_count;
1546 /* Number of commands that exited with a signal. */
1548 static int signal_count;
1550 /* Allocate the argument vector. */
1555 argbuf = VEC_alloc (const_char_p, heap, 10);
1558 /* Clear out the vector of arguments (after a command is executed). */
1563 VEC_truncate (const_char_p, argbuf, 0);
1566 /* Add one argument to the vector at the end.
1567 This is done when a space is seen or at the end of the line.
1568 If DELETE_ALWAYS is nonzero, the arg is a filename
1569 and the file should be deleted eventually.
1570 If DELETE_FAILURE is nonzero, the arg is a filename
1571 and the file should be deleted if this compilation fails. */
1574 store_arg (const char *arg, int delete_always, int delete_failure)
1576 VEC_safe_push (const_char_p, heap, argbuf, arg);
1578 if (strcmp (arg, "-o") == 0)
1579 have_o_argbuf_index = VEC_length (const_char_p, argbuf);
1580 if (delete_always || delete_failure)
1583 /* If the temporary file we should delete is specified as
1584 part of a joined argument extract the filename. */
1586 && (p = strrchr (arg, '=')))
1588 record_temp_file (arg, delete_always, delete_failure);
1592 /* Load specs from a file name named FILENAME, replacing occurrences of
1593 various different types of line-endings, \r\n, \n\r and just \r, with
1597 load_specs (const char *filename)
1601 struct stat statbuf;
1608 fnotice (stderr, "Reading specs from %s\n", filename);
1610 /* Open and stat the file. */
1611 desc = open (filename, O_RDONLY, 0);
1613 pfatal_with_name (filename);
1614 if (stat (filename, &statbuf) < 0)
1615 pfatal_with_name (filename);
1617 /* Read contents of file into BUFFER. */
1618 buffer = XNEWVEC (char, statbuf.st_size + 1);
1619 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1621 pfatal_with_name (filename);
1622 buffer[readlen] = 0;
1625 specs = XNEWVEC (char, readlen + 1);
1627 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1633 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1635 else if (*(buffer_p + 1) == '\n') /* \r\n */
1649 /* Read compilation specs from a file named FILENAME,
1650 replacing the default ones.
1652 A suffix which starts with `*' is a definition for
1653 one of the machine-specific sub-specs. The "suffix" should be
1654 *asm, *cc1, *cpp, *link, *startfile, etc.
1655 The corresponding spec is stored in asm_spec, etc.,
1656 rather than in the `compilers' vector.
1658 Anything invalid in the file is a fatal error. */
1661 read_specs (const char *filename, int main_p)
1666 buffer = load_specs (filename);
1668 /* Scan BUFFER for specs, putting them in the vector. */
1674 char *in, *out, *p1, *p2, *p3;
1676 /* Advance P in BUFFER to the next nonblank nocomment line. */
1677 p = skip_whitespace (p);
1681 /* Is this a special command that starts with '%'? */
1682 /* Don't allow this for the main specs file, since it would
1683 encourage people to overwrite it. */
1684 if (*p == '%' && !main_p)
1687 while (*p && *p != '\n')
1693 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1694 && (p1[sizeof "%include" - 1] == ' '
1695 || p1[sizeof "%include" - 1] == '\t'))
1699 p1 += sizeof ("%include");
1700 while (*p1 == ' ' || *p1 == '\t')
1703 if (*p1++ != '<' || p[-2] != '>')
1704 fatal_error ("specs %%include syntax malformed after "
1706 (long) (p1 - buffer + 1));
1709 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1710 read_specs (new_filename ? new_filename : p1, FALSE);
1713 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1714 && (p1[sizeof "%include_noerr" - 1] == ' '
1715 || p1[sizeof "%include_noerr" - 1] == '\t'))
1719 p1 += sizeof "%include_noerr";
1720 while (*p1 == ' ' || *p1 == '\t')
1723 if (*p1++ != '<' || p[-2] != '>')
1724 fatal_error ("specs %%include syntax malformed after "
1726 (long) (p1 - buffer + 1));
1729 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1731 read_specs (new_filename, FALSE);
1732 else if (verbose_flag)
1733 fnotice (stderr, "could not find specs file %s\n", p1);
1736 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1737 && (p1[sizeof "%rename" - 1] == ' '
1738 || p1[sizeof "%rename" - 1] == '\t'))
1741 struct spec_list *sl;
1742 struct spec_list *newsl;
1744 /* Get original name. */
1745 p1 += sizeof "%rename";
1746 while (*p1 == ' ' || *p1 == '\t')
1749 if (! ISALPHA ((unsigned char) *p1))
1750 fatal_error ("specs %%rename syntax malformed after "
1752 (long) (p1 - buffer));
1755 while (*p2 && !ISSPACE ((unsigned char) *p2))
1758 if (*p2 != ' ' && *p2 != '\t')
1759 fatal_error ("specs %%rename syntax malformed after "
1761 (long) (p2 - buffer));
1765 while (*p2 == ' ' || *p2 == '\t')
1768 if (! ISALPHA ((unsigned char) *p2))
1769 fatal_error ("specs %%rename syntax malformed after "
1771 (long) (p2 - buffer));
1773 /* Get new spec name. */
1775 while (*p3 && !ISSPACE ((unsigned char) *p3))
1779 fatal_error ("specs %%rename syntax malformed after "
1781 (long) (p3 - buffer));
1784 for (sl = specs; sl; sl = sl->next)
1785 if (name_len == sl->name_len && !strcmp (sl->name, p1))
1789 fatal_error ("specs %s spec was not found to be renamed", p1);
1791 if (strcmp (p1, p2) == 0)
1794 for (newsl = specs; newsl; newsl = newsl->next)
1795 if (strcmp (newsl->name, p2) == 0)
1796 fatal_error ("%s: attempt to rename spec %qs to "
1797 "already defined spec %qs",
1802 fnotice (stderr, "rename spec %s to %s\n", p1, p2);
1804 fnotice (stderr, "spec is '%s'\n\n", *(sl->ptr_spec));
1808 set_spec (p2, *(sl->ptr_spec));
1810 free (CONST_CAST (char *, *(sl->ptr_spec)));
1812 *(sl->ptr_spec) = "";
1817 fatal_error ("specs unknown %% command after %ld characters",
1818 (long) (p1 - buffer));
1821 /* Find the colon that should end the suffix. */
1823 while (*p1 && *p1 != ':' && *p1 != '\n')
1826 /* The colon shouldn't be missing. */
1828 fatal_error ("specs file malformed after %ld characters",
1829 (long) (p1 - buffer));
1831 /* Skip back over trailing whitespace. */
1833 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
1836 /* Copy the suffix to a string. */
1837 suffix = save_string (p, p2 - p);
1838 /* Find the next line. */
1839 p = skip_whitespace (p1 + 1);
1841 fatal_error ("specs file malformed after %ld characters",
1842 (long) (p - buffer));
1845 /* Find next blank line or end of string. */
1846 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
1849 /* Specs end at the blank line and do not include the newline. */
1850 spec = save_string (p, p1 - p);
1853 /* Delete backslash-newline sequences from the spec. */
1858 if (in[0] == '\\' && in[1] == '\n')
1860 else if (in[0] == '#')
1861 while (*in && *in != '\n')
1869 if (suffix[0] == '*')
1871 if (! strcmp (suffix, "*link_command"))
1872 link_command_spec = spec;
1874 set_spec (suffix + 1, spec);
1878 /* Add this pair to the vector. */
1880 = XRESIZEVEC (struct compiler, compilers, n_compilers + 2);
1882 compilers[n_compilers].suffix = suffix;
1883 compilers[n_compilers].spec = spec;
1885 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
1889 link_command_spec = spec;
1892 if (link_command_spec == 0)
1893 fatal_error ("spec file has no spec for linking");
1896 /* Record the names of temporary files we tell compilers to write,
1897 and delete them at the end of the run. */
1899 /* This is the common prefix we use to make temp file names.
1900 It is chosen once for each run of this program.
1901 It is substituted into a spec by %g or %j.
1902 Thus, all temp file names contain this prefix.
1903 In practice, all temp file names start with this prefix.
1905 This prefix comes from the envvar TMPDIR if it is defined;
1906 otherwise, from the P_tmpdir macro if that is defined;
1907 otherwise, in /usr/tmp or /tmp;
1908 or finally the current directory if all else fails. */
1910 static const char *temp_filename;
1912 /* Length of the prefix. */
1914 static int temp_filename_length;
1916 /* Define the list of temporary files to delete. */
1921 struct temp_file *next;
1924 /* Queue of files to delete on success or failure of compilation. */
1925 static struct temp_file *always_delete_queue;
1926 /* Queue of files to delete on failure of compilation. */
1927 static struct temp_file *failure_delete_queue;
1929 /* Record FILENAME as a file to be deleted automatically.
1930 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
1931 otherwise delete it in any case.
1932 FAIL_DELETE nonzero means delete it if a compilation step fails;
1933 otherwise delete it in any case. */
1936 record_temp_file (const char *filename, int always_delete, int fail_delete)
1938 char *const name = xstrdup (filename);
1942 struct temp_file *temp;
1943 for (temp = always_delete_queue; temp; temp = temp->next)
1944 if (! strcmp (name, temp->name))
1947 temp = XNEW (struct temp_file);
1948 temp->next = always_delete_queue;
1950 always_delete_queue = temp;
1957 struct temp_file *temp;
1958 for (temp = failure_delete_queue; temp; temp = temp->next)
1959 if (! strcmp (name, temp->name))
1962 temp = XNEW (struct temp_file);
1963 temp->next = failure_delete_queue;
1965 failure_delete_queue = temp;
1971 /* Delete all the temporary files whose names we previously recorded. */
1973 #ifndef DELETE_IF_ORDINARY
1974 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
1977 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
1978 if (unlink (NAME) < 0) \
1980 perror_with_name (NAME); \
1985 delete_if_ordinary (const char *name)
1991 printf ("Delete %s? (y or n) ", name);
1995 while ((c = getchar ()) != '\n' && c != EOF)
1998 if (i == 'y' || i == 'Y')
2000 DELETE_IF_ORDINARY (name, st, verbose_flag);
2004 delete_temp_files (void)
2006 struct temp_file *temp;
2008 for (temp = always_delete_queue; temp; temp = temp->next)
2009 delete_if_ordinary (temp->name);
2010 always_delete_queue = 0;
2013 /* Delete all the files to be deleted on error. */
2016 delete_failure_queue (void)
2018 struct temp_file *temp;
2020 for (temp = failure_delete_queue; temp; temp = temp->next)
2021 delete_if_ordinary (temp->name);
2025 clear_failure_queue (void)
2027 failure_delete_queue = 0;
2030 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2032 If DO_MULTI is true iterate over the paths twice, first with multilib
2033 suffix then without, otherwise iterate over the paths once without
2034 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2035 to avoid visiting the same path twice, but we could do better. For
2036 instance, /usr/lib/../lib is considered different from /usr/lib.
2037 At least EXTRA_SPACE chars past the end of the path passed to
2038 CALLBACK are available for use by the callback.
2039 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2041 Returns the value returned by CALLBACK. */
2044 for_each_path (const struct path_prefix *paths,
2047 void *(*callback) (char *, void *),
2048 void *callback_info)
2050 struct prefix_list *pl;
2051 const char *multi_dir = NULL;
2052 const char *multi_os_dir = NULL;
2053 const char *multiarch_suffix = NULL;
2054 const char *multi_suffix;
2055 const char *just_multi_suffix;
2058 bool skip_multi_dir = false;
2059 bool skip_multi_os_dir = false;
2061 multi_suffix = machine_suffix;
2062 just_multi_suffix = just_machine_suffix;
2063 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0)
2065 multi_dir = concat (multilib_dir, dir_separator_str, NULL);
2066 multi_suffix = concat (multi_suffix, multi_dir, NULL);
2067 just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL);
2069 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0)
2070 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL);
2072 multiarch_suffix = concat (multiarch_dir, dir_separator_str, NULL);
2076 size_t multi_dir_len = 0;
2077 size_t multi_os_dir_len = 0;
2078 size_t multiarch_len = 0;
2080 size_t just_suffix_len;
2084 multi_dir_len = strlen (multi_dir);
2086 multi_os_dir_len = strlen (multi_os_dir);
2087 if (multiarch_suffix)
2088 multiarch_len = strlen (multiarch_suffix);
2089 suffix_len = strlen (multi_suffix);
2090 just_suffix_len = strlen (just_multi_suffix);
2094 len = paths->max_len + extra_space + 1;
2095 len += MAX (MAX (suffix_len, multi_os_dir_len), multiarch_len);
2096 path = XNEWVEC (char, len);
2099 for (pl = paths->plist; pl != 0; pl = pl->next)
2101 len = strlen (pl->prefix);
2102 memcpy (path, pl->prefix, len);
2104 /* Look first in MACHINE/VERSION subdirectory. */
2105 if (!skip_multi_dir)
2107 memcpy (path + len, multi_suffix, suffix_len + 1);
2108 ret = callback (path, callback_info);
2113 /* Some paths are tried with just the machine (ie. target)
2114 subdir. This is used for finding as, ld, etc. */
2116 && pl->require_machine_suffix == 2)
2118 memcpy (path + len, just_multi_suffix, just_suffix_len + 1);
2119 ret = callback (path, callback_info);
2124 /* Now try the multiarch path. */
2126 && !pl->require_machine_suffix && multiarch_dir)
2128 memcpy (path + len, multiarch_suffix, multiarch_len + 1);
2129 ret = callback (path, callback_info);
2134 /* Now try the base path. */
2135 if (!pl->require_machine_suffix
2136 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir))
2138 const char *this_multi;
2139 size_t this_multi_len;
2141 if (pl->os_multilib)
2143 this_multi = multi_os_dir;
2144 this_multi_len = multi_os_dir_len;
2148 this_multi = multi_dir;
2149 this_multi_len = multi_dir_len;
2153 memcpy (path + len, this_multi, this_multi_len + 1);
2157 ret = callback (path, callback_info);
2165 if (multi_dir == NULL && multi_os_dir == NULL)
2168 /* Run through the paths again, this time without multilibs.
2169 Don't repeat any we have already seen. */
2172 free (CONST_CAST (char *, multi_dir));
2174 free (CONST_CAST (char *, multi_suffix));
2175 multi_suffix = machine_suffix;
2176 free (CONST_CAST (char *, just_multi_suffix));
2177 just_multi_suffix = just_machine_suffix;
2180 skip_multi_dir = true;
2183 free (CONST_CAST (char *, multi_os_dir));
2184 multi_os_dir = NULL;
2187 skip_multi_os_dir = true;
2192 free (CONST_CAST (char *, multi_dir));
2193 free (CONST_CAST (char *, multi_suffix));
2194 free (CONST_CAST (char *, just_multi_suffix));
2197 free (CONST_CAST (char *, multi_os_dir));
2203 /* Callback for build_search_list. Adds path to obstack being built. */
2205 struct add_to_obstack_info {
2212 add_to_obstack (char *path, void *data)
2214 struct add_to_obstack_info *info = (struct add_to_obstack_info *) data;
2216 if (info->check_dir && !is_directory (path, false))
2219 if (!info->first_time)
2220 obstack_1grow (info->ob, PATH_SEPARATOR);
2222 obstack_grow (info->ob, path, strlen (path));
2224 info->first_time = false;
2228 /* Add or change the value of an environment variable, outputting the
2229 change to standard error if in verbose mode. */
2231 xputenv (const char *string)
2234 fnotice (stderr, "%s\n", string);
2235 putenv (CONST_CAST (char *, string));
2238 /* Build a list of search directories from PATHS.
2239 PREFIX is a string to prepend to the list.
2240 If CHECK_DIR_P is true we ensure the directory exists.
2241 If DO_MULTI is true, multilib paths are output first, then
2243 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2244 It is also used by the --print-search-dirs flag. */
2247 build_search_list (const struct path_prefix *paths, const char *prefix,
2248 bool check_dir, bool do_multi)
2250 struct add_to_obstack_info info;
2252 info.ob = &collect_obstack;
2253 info.check_dir = check_dir;
2254 info.first_time = true;
2256 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2257 obstack_1grow (&collect_obstack, '=');
2259 for_each_path (paths, do_multi, 0, add_to_obstack, &info);
2261 obstack_1grow (&collect_obstack, '\0');
2262 return XOBFINISH (&collect_obstack, char *);
2265 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2269 putenv_from_prefixes (const struct path_prefix *paths, const char *env_var,
2272 xputenv (build_search_list (paths, env_var, true, do_multi));
2275 /* Check whether NAME can be accessed in MODE. This is like access,
2276 except that it never considers directories to be executable. */
2279 access_check (const char *name, int mode)
2285 if (stat (name, &st) < 0
2286 || S_ISDIR (st.st_mode))
2290 return access (name, mode);
2293 /* Callback for find_a_file. Appends the file name to the directory
2294 path. If the resulting file exists in the right mode, return the
2295 full pathname to the file. */
2297 struct file_at_path_info {
2306 file_at_path (char *path, void *data)
2308 struct file_at_path_info *info = (struct file_at_path_info *) data;
2309 size_t len = strlen (path);
2311 memcpy (path + len, info->name, info->name_len);
2312 len += info->name_len;
2314 /* Some systems have a suffix for executable files.
2315 So try appending that first. */
2316 if (info->suffix_len)
2318 memcpy (path + len, info->suffix, info->suffix_len + 1);
2319 if (access_check (path, info->mode) == 0)
2324 if (access_check (path, info->mode) == 0)
2330 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2331 access to check permissions. If DO_MULTI is true, search multilib
2332 paths then non-multilib paths, otherwise do not search multilib paths.
2333 Return 0 if not found, otherwise return its name, allocated with malloc. */
2336 find_a_file (const struct path_prefix *pprefix, const char *name, int mode,
2339 struct file_at_path_info info;
2341 #ifdef DEFAULT_ASSEMBLER
2342 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2343 return xstrdup (DEFAULT_ASSEMBLER);
2346 #ifdef DEFAULT_LINKER
2347 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2348 return xstrdup (DEFAULT_LINKER);
2351 /* Determine the filename to execute (special case for absolute paths). */
2353 if (IS_ABSOLUTE_PATH (name))
2355 if (access (name, mode) == 0)
2356 return xstrdup (name);
2362 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "";
2363 info.name_len = strlen (info.name);
2364 info.suffix_len = strlen (info.suffix);
2367 return (char*) for_each_path (pprefix, do_multi,
2368 info.name_len + info.suffix_len,
2369 file_at_path, &info);
2372 /* Ranking of prefixes in the sort list. -B prefixes are put before
2375 enum path_prefix_priority
2377 PREFIX_PRIORITY_B_OPT,
2378 PREFIX_PRIORITY_LAST
2381 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2382 order according to PRIORITY. Within each PRIORITY, new entries are
2385 If WARN is nonzero, we will warn if no file is found
2386 through this prefix. WARN should point to an int
2387 which will be set to 1 if this entry is used.
2389 COMPONENT is the value to be passed to update_path.
2391 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2392 the complete value of machine_suffix.
2393 2 means try both machine_suffix and just_machine_suffix. */
2396 add_prefix (struct path_prefix *pprefix, const char *prefix,
2397 const char *component, /* enum prefix_priority */ int priority,
2398 int require_machine_suffix, int os_multilib)
2400 struct prefix_list *pl, **prev;
2403 for (prev = &pprefix->plist;
2404 (*prev) != NULL && (*prev)->priority <= priority;
2405 prev = &(*prev)->next)
2408 /* Keep track of the longest prefix. */
2410 prefix = update_path (prefix, component);
2411 len = strlen (prefix);
2412 if (len > pprefix->max_len)
2413 pprefix->max_len = len;
2415 pl = XNEW (struct prefix_list);
2416 pl->prefix = prefix;
2417 pl->require_machine_suffix = require_machine_suffix;
2418 pl->priority = priority;
2419 pl->os_multilib = os_multilib;
2421 /* Insert after PREV. */
2426 /* Same as add_prefix, but prepending target_system_root to prefix. */
2427 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2429 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2430 const char *component,
2431 /* enum prefix_priority */ int priority,
2432 int require_machine_suffix, int os_multilib)
2434 if (!IS_ABSOLUTE_PATH (prefix))
2435 fatal_error ("system path %qs is not absolute", prefix);
2437 if (target_system_root)
2439 if (target_sysroot_suffix)
2440 prefix = concat (target_sysroot_suffix, prefix, NULL);
2441 prefix = concat (target_system_root, prefix, NULL);
2443 /* We have to override this because GCC's notion of sysroot
2444 moves along with GCC. */
2448 add_prefix (pprefix, prefix, component, priority,
2449 require_machine_suffix, os_multilib);
2452 /* Execute the command specified by the arguments on the current line of spec.
2453 When using pipes, this includes several piped-together commands
2454 with `|' between them.
2456 Return 0 if successful, -1 if failed. */
2462 int n_commands; /* # of command. */
2464 struct pex_obj *pex;
2467 const char *prog; /* program name. */
2468 const char **argv; /* vector of args. */
2472 struct command *commands; /* each command buffer with above info. */
2474 gcc_assert (!processing_spec_function);
2478 string = find_a_file (&exec_prefixes,
2479 VEC_index (const_char_p, argbuf, 0), X_OK, false);
2481 VEC_replace (const_char_p, argbuf, 0, string);
2482 insert_wrapper (wrapper_string);
2485 /* Count # of piped commands. */
2486 for (n_commands = 1, i = 0; VEC_iterate (const_char_p, argbuf, i, arg); i++)
2487 if (strcmp (arg, "|") == 0)
2490 /* Get storage for each command. */
2491 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2493 /* Split argbuf into its separate piped processes,
2494 and record info about each one.
2495 Also search for the programs that are to be run. */
2497 VEC_safe_push (const_char_p, heap, argbuf, 0);
2499 commands[0].prog = VEC_index (const_char_p, argbuf, 0); /* first command. */
2500 commands[0].argv = VEC_address (const_char_p, argbuf);
2502 if (!wrapper_string)
2504 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false);
2505 commands[0].argv[0] = (string) ? string : commands[0].argv[0];
2508 for (n_commands = 1, i = 0; VEC_iterate (const_char_p, argbuf, i, arg); i++)
2509 if (arg && strcmp (arg, "|") == 0)
2510 { /* each command. */
2511 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2512 fatal_error ("-pipe not supported");
2514 VEC_replace (const_char_p, argbuf, i, 0); /* Termination of
2516 commands[n_commands].prog = VEC_index (const_char_p, argbuf, i + 1);
2517 commands[n_commands].argv
2518 = &(VEC_address (const_char_p, argbuf))[i + 1];
2519 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2522 commands[n_commands].argv[0] = string;
2526 /* If -v, print what we are about to do, and maybe query. */
2530 /* For help listings, put a blank line between sub-processes. */
2531 if (print_help_list)
2532 fputc ('\n', stderr);
2534 /* Print each piped command as a separate line. */
2535 for (i = 0; i < n_commands; i++)
2537 const char *const *j;
2539 if (verbose_only_flag)
2541 for (j = commands[i].argv; *j; j++)
2544 for (p = *j; *p; ++p)
2545 if (!ISALNUM ((unsigned char) *p)
2546 && *p != '_' && *p != '/' && *p != '-' && *p != '.')
2550 fprintf (stderr, " \"");
2551 for (p = *j; *p; ++p)
2553 if (*p == '"' || *p == '\\' || *p == '$')
2554 fputc ('\\', stderr);
2557 fputc ('"', stderr);
2559 /* If it's empty, print "". */
2561 fprintf (stderr, " \"\"");
2563 fprintf (stderr, " %s", *j);
2567 for (j = commands[i].argv; *j; j++)
2568 /* If it's empty, print "". */
2570 fprintf (stderr, " \"\"");
2572 fprintf (stderr, " %s", *j);
2574 /* Print a pipe symbol after all but the last command. */
2575 if (i + 1 != n_commands)
2576 fprintf (stderr, " |");
2577 fprintf (stderr, "\n");
2580 if (verbose_only_flag != 0)
2582 /* verbose_only_flag should act as if the spec was
2583 executed, so increment execution_count before
2584 returning. This prevents spurious warnings about
2585 unused linker input files, etc. */
2590 fnotice (stderr, "\nGo ahead? (y or n) ");
2594 while (getchar () != '\n')
2597 if (i != 'y' && i != 'Y')
2602 #ifdef ENABLE_VALGRIND_CHECKING
2603 /* Run the each command through valgrind. To simplify prepending the
2604 path to valgrind and the option "-q" (for quiet operation unless
2605 something triggers), we allocate a separate argv array. */
2607 for (i = 0; i < n_commands; i++)
2613 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2616 argv = XALLOCAVEC (const char *, argc + 3);
2618 argv[0] = VALGRIND_PATH;
2620 for (j = 2; j < argc + 2; j++)
2621 argv[j] = commands[i].argv[j - 2];
2624 commands[i].argv = argv;
2625 commands[i].prog = argv[0];
2629 /* Run each piped subprocess. */
2631 pex = pex_init (PEX_USE_PIPES | ((report_times || report_times_to_file)
2632 ? PEX_RECORD_TIMES : 0),
2633 progname, temp_filename);
2635 fatal_error ("pex_init failed: %m");
2637 for (i = 0; i < n_commands; i++)
2641 const char *string = commands[i].argv[0];
2643 errmsg = pex_run (pex,
2644 ((i + 1 == n_commands ? PEX_LAST : 0)
2645 | (string == commands[i].prog ? PEX_SEARCH : 0)),
2646 string, CONST_CAST (char **, commands[i].argv),
2651 fatal_error (errmsg);
2655 pfatal_with_name (errmsg);
2659 if (string != commands[i].prog)
2660 free (CONST_CAST (char *, string));
2665 /* Wait for all the subprocesses to finish. */
2669 struct pex_time *times = NULL;
2672 statuses = (int *) alloca (n_commands * sizeof (int));
2673 if (!pex_get_status (pex, n_commands, statuses))
2674 fatal_error ("failed to get exit status: %m");
2676 if (report_times || report_times_to_file)
2678 times = (struct pex_time *) alloca (n_commands * sizeof (struct pex_time));
2679 if (!pex_get_times (pex, n_commands, times))
2680 fatal_error ("failed to get process times: %m");
2685 for (i = 0; i < n_commands; ++i)
2687 int status = statuses[i];
2689 if (WIFSIGNALED (status))
2692 /* SIGPIPE is a special case. It happens in -pipe mode
2693 when the compiler dies before the preprocessor is done,
2694 or the assembler dies before the compiler is done.
2695 There's generally been an error already, and this is
2696 just fallout. So don't generate another error unless
2697 we would otherwise have succeeded. */
2698 if (WTERMSIG (status) == SIGPIPE
2699 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2706 internal_error ("%s (program %s)",
2707 strsignal (WTERMSIG (status)), commands[i].prog);
2709 else if (WIFEXITED (status)
2710 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2712 if (WEXITSTATUS (status) > greatest_status)
2713 greatest_status = WEXITSTATUS (status);
2717 if (report_times || report_times_to_file)
2719 struct pex_time *pt = ×[i];
2722 ut = ((double) pt->user_seconds
2723 + (double) pt->user_microseconds / 1.0e6);
2724 st = ((double) pt->system_seconds
2725 + (double) pt->system_microseconds / 1.0e6);
2730 fnotice (stderr, "# %s %.2f %.2f\n",
2731 commands[i].prog, ut, st);
2733 if (report_times_to_file)
2736 const char *const *j;
2738 fprintf (report_times_to_file, "%g %g", ut, st);
2740 for (j = &commands[i].prog; *j; j = &commands[i].argv[++c])
2743 for (p = *j; *p; ++p)
2744 if (*p == '"' || *p == '\\' || *p == '$'
2750 fprintf (report_times_to_file, " \"");
2751 for (p = *j; *p; ++p)
2753 if (*p == '"' || *p == '\\' || *p == '$')
2754 fputc ('\\', report_times_to_file);
2755 fputc (*p, report_times_to_file);
2757 fputc ('"', report_times_to_file);
2760 fprintf (report_times_to_file, " %s", *j);
2763 fputc ('\n', report_times_to_file);
2773 /* Find all the switches given to us
2774 and make a vector describing them.
2775 The elements of the vector are strings, one per switch given.
2776 If a switch uses following arguments, then the `part1' field
2777 is the switch itself and the `args' field
2778 is a null-terminated vector containing the following arguments.
2779 Bits in the `live_cond' field are:
2780 SWITCH_LIVE to indicate this switch is true in a conditional spec.
2781 SWITCH_FALSE to indicate this switch is overridden by a later switch.
2782 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
2783 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
2784 in all do_spec calls afterwards. Used for %<S from self specs.
2785 The `validated' field is nonzero if any spec has looked at this switch;
2786 if it remains zero at the end of the run, it must be meaningless. */
2788 #define SWITCH_LIVE (1 << 0)
2789 #define SWITCH_FALSE (1 << 1)
2790 #define SWITCH_IGNORE (1 << 2)
2791 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
2792 #define SWITCH_KEEP_FOR_GCC (1 << 4)
2798 unsigned int live_cond;
2799 unsigned char validated;
2800 unsigned char ordering;
2803 static struct switchstr *switches;
2805 static int n_switches;
2807 static int n_switches_alloc;
2809 /* Set to zero if -fcompare-debug is disabled, positive if it's
2810 enabled and we're running the first compilation, negative if it's
2811 enabled and we're running the second compilation. For most of the
2812 time, it's in the range -1..1, but it can be temporarily set to 2
2813 or 3 to indicate that the -fcompare-debug flags didn't come from
2814 the command-line, but rather from the GCC_COMPARE_DEBUG environment
2815 variable, until a synthesized -fcompare-debug flag is added to the
2819 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
2820 int compare_debug_second;
2822 /* Set to the flags that should be passed to the second compilation in
2823 a -fcompare-debug compilation. */
2824 const char *compare_debug_opt;
2826 static struct switchstr *switches_debug_check[2];
2828 static int n_switches_debug_check[2];
2830 static int n_switches_alloc_debug_check[2];
2832 static char *debug_check_temp_file[2];
2834 /* Language is one of three things:
2836 1) The name of a real programming language.
2837 2) NULL, indicating that no one has figured out
2839 3) '*', indicating that the file should be passed
2844 const char *language;
2845 struct compiler *incompiler;
2850 /* Also a vector of input files specified. */
2852 static struct infile *infiles;
2856 static int n_infiles_alloc;
2858 /* True if multiple input files are being compiled to a single
2861 static bool combine_inputs;
2863 /* This counts the number of libraries added by lang_specific_driver, so that
2864 we can tell if there were any user supplied any files or libraries. */
2866 static int added_libraries;
2868 /* And a vector of corresponding output files is made up later. */
2870 const char **outfiles;
2872 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2874 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2875 is true if we should look for an executable suffix. DO_OBJ
2876 is true if we should look for an object suffix. */
2879 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
2880 int do_obj ATTRIBUTE_UNUSED)
2882 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2890 len = strlen (name);
2892 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2893 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2894 if (do_obj && len > 2
2895 && name[len - 2] == '.'
2896 && name[len - 1] == 'o')
2898 obstack_grow (&obstack, name, len - 2);
2899 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2900 name = XOBFINISH (&obstack, const char *);
2904 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2905 /* If there is no filetype, make it the executable suffix (which includes
2906 the "."). But don't get confused if we have just "-o". */
2907 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
2910 for (i = len - 1; i >= 0; i--)
2911 if (IS_DIR_SEPARATOR (name[i]))
2914 for (i++; i < len; i++)
2918 obstack_grow (&obstack, name, len);
2919 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
2920 strlen (TARGET_EXECUTABLE_SUFFIX));
2921 name = XOBFINISH (&obstack, const char *);
2928 /* Display the command line switches accepted by gcc. */
2932 printf (_("Usage: %s [options] file...\n"), progname);
2933 fputs (_("Options:\n"), stdout);
2935 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
2936 fputs (_(" --help Display this information\n"), stdout);
2937 fputs (_(" --target-help Display target specific command line options\n"), stdout);
2938 fputs (_(" --help={target|optimizers|warnings|params|[^]{joined|separate|undocumented}}[,...]\n"), stdout);
2939 fputs (_(" Display specific types of command line options\n"), stdout);
2941 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
2942 fputs (_(" --version Display compiler version information\n"), stdout);
2943 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
2944 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
2945 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
2946 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
2947 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
2948 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
2949 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
2951 -print-multiarch Display the target's normalized GNU triplet, used as\n\
2952 a component in the library path\n"), stdout);
2953 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
2955 -print-multi-lib Display the mapping between command line options and\n\
2956 multiple library search directories\n"), stdout);
2957 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
2958 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout);
2959 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout);
2960 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
2961 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
2962 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
2963 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
2964 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
2965 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
2966 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
2967 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout);
2969 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
2970 prefixes to other gcc components\n"), stdout);
2971 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
2972 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
2973 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
2974 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
2976 --sysroot=<directory> Use <directory> as the root directory for headers\n\
2977 and libraries\n"), stdout);
2978 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
2979 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
2980 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
2981 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
2982 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
2983 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
2984 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
2986 -x <language> Specify the language of the following input files\n\
2987 Permissible languages include: c c++ assembler none\n\
2988 'none' means revert to the default behavior of\n\
2989 guessing the language based on the file's extension\n\
2993 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
2994 passed on to the various sub-processes invoked by %s. In order to pass\n\
2995 other options on to these processes the -W<letter> options must be used.\n\
2998 /* The rest of the options are displayed by invocations of the various
3003 add_preprocessor_option (const char *option, int len)
3005 VEC_safe_push (char_p, heap, preprocessor_options,
3006 save_string (option, len));
3010 add_assembler_option (const char *option, int len)
3012 VEC_safe_push (char_p, heap, assembler_options, save_string (option, len));
3016 add_linker_option (const char *option, int len)
3018 VEC_safe_push (char_p, heap, linker_options, save_string (option, len));
3021 /* Allocate space for an input file in infiles. */
3026 if (n_infiles_alloc == 0)
3028 n_infiles_alloc = 16;
3029 infiles = XNEWVEC (struct infile, n_infiles_alloc);
3031 else if (n_infiles_alloc == n_infiles)
3033 n_infiles_alloc *= 2;
3034 infiles = XRESIZEVEC (struct infile, infiles, n_infiles_alloc);
3038 /* Store an input file with the given NAME and LANGUAGE in
3042 add_infile (const char *name, const char *language)
3045 infiles[n_infiles].name = name;
3046 infiles[n_infiles++].language = language;
3049 /* Allocate space for a switch in switches. */
3054 if (n_switches_alloc == 0)
3056 n_switches_alloc = 16;
3057 switches = XNEWVEC (struct switchstr, n_switches_alloc);
3059 else if (n_switches_alloc == n_switches)
3061 n_switches_alloc *= 2;
3062 switches = XRESIZEVEC (struct switchstr, switches, n_switches_alloc);
3066 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3067 as validated if VALIDATED. */
3070 save_switch (const char *opt, size_t n_args, const char *const *args,
3074 switches[n_switches].part1 = opt + 1;
3076 switches[n_switches].args = 0;
3079 switches[n_switches].args = XNEWVEC (const char *, n_args + 1);
3080 memcpy (switches[n_switches].args, args, n_args * sizeof (const char *));
3081 switches[n_switches].args[n_args] = NULL;
3084 switches[n_switches].live_cond = 0;
3085 switches[n_switches].validated = validated;
3086 switches[n_switches].ordering = 0;
3090 /* Handle an option DECODED that is unknown to the option-processing
3091 machinery, but may be known to specs. */
3094 driver_unknown_option_callback (const struct cl_decoded_option *decoded)
3096 save_switch (decoded->canonical_option[0],
3097 decoded->canonical_option_num_elements - 1,
3098 &decoded->canonical_option[1], false);
3103 /* Handle an option DECODED that is not marked as CL_DRIVER.
3104 LANG_MASK will always be CL_DRIVER. */
3107 driver_wrong_lang_callback (const struct cl_decoded_option *decoded,
3108 unsigned int lang_mask ATTRIBUTE_UNUSED)
3110 /* At this point, non-driver options are accepted (and expected to
3111 be passed down by specs) unless marked to be rejected by the
3112 driver. Options to be rejected by the driver but accepted by the
3113 compilers proper are treated just like completely unknown
3115 const struct cl_option *option = &cl_options[decoded->opt_index];
3117 if (option->flags & CL_REJECT_DRIVER)
3118 error ("unrecognized command line option %qs",
3119 decoded->orig_option_with_args_text);
3121 driver_unknown_option_callback (decoded);
3124 /* Note that an option (index OPT_INDEX, argument ARG, value VALUE)
3125 has been successfully handled with a handler for mask MASK. */
3128 driver_post_handling_callback (const struct cl_decoded_option *decoded ATTRIBUTE_UNUSED,
3129 unsigned int mask ATTRIBUTE_UNUSED)
3131 /* Nothing to do here. */
3134 static const char *spec_lang = 0;
3135 static int last_language_n_infiles;
3137 /* Handle a driver option; arguments and return value as for
3141 driver_handle_option (struct gcc_options *opts,
3142 struct gcc_options *opts_set,
3143 const struct cl_decoded_option *decoded,
3144 unsigned int lang_mask ATTRIBUTE_UNUSED, int kind,
3146 const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED,
3147 diagnostic_context *dc)
3149 size_t opt_index = decoded->opt_index;
3150 const char *arg = decoded->arg;
3151 const char *compare_debug_replacement_opt;
3152 int value = decoded->value;
3153 bool validated = false;
3154 bool do_save = true;
3156 gcc_assert (opts == &global_options);
3157 gcc_assert (opts_set == &global_options_set);
3158 gcc_assert (kind == DK_UNSPECIFIED);
3159 gcc_assert (loc == UNKNOWN_LOCATION);
3160 gcc_assert (dc == global_dc);
3166 struct spec_list *sl;
3168 for (sl = specs; sl; sl = sl->next)
3169 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3170 if (link_command_spec)
3171 printf ("*link_command:\n%s\n\n", link_command_spec);
3175 case OPT_dumpversion:
3176 printf ("%s\n", spec_version);
3179 case OPT_dumpmachine:
3180 printf ("%s\n", spec_machine);
3186 /* CPP driver cannot obtain switch from cc1_options. */
3188 add_preprocessor_option ("--version", strlen ("--version"));
3189 add_assembler_option ("--version", strlen ("--version"));
3190 add_linker_option ("--version", strlen ("--version"));
3194 print_help_list = 1;
3196 /* CPP driver cannot obtain switch from cc1_options. */
3198 add_preprocessor_option ("--help", 6);
3199 add_assembler_option ("--help", 6);
3200 add_linker_option ("--help", 6);
3204 print_subprocess_help = 2;
3207 case OPT__target_help:
3208 print_subprocess_help = 1;
3210 /* CPP driver cannot obtain switch from cc1_options. */
3212 add_preprocessor_option ("--target-help", 13);
3213 add_assembler_option ("--target-help", 13);
3214 add_linker_option ("--target-help", 13);
3217 case OPT_pass_exit_codes:
3218 case OPT_print_search_dirs:
3219 case OPT_print_file_name_:
3220 case OPT_print_prog_name_:
3221 case OPT_print_multi_lib:
3222 case OPT_print_multi_directory:
3223 case OPT_print_sysroot:
3224 case OPT_print_multi_os_directory:
3225 case OPT_print_multiarch:
3226 case OPT_print_sysroot_headers_suffix:
3229 /* These options set the variables specified in common.opt
3230 automatically, and do not need to be saved for spec
3235 case OPT_print_libgcc_file_name:
3236 print_file_name = "libgcc.a";
3240 case OPT_fcompare_debug_second:
3241 compare_debug_second = 1;
3244 case OPT_fcompare_debug:
3248 compare_debug_replacement_opt = "-fcompare-debug=";
3250 goto compare_debug_with_arg;
3253 compare_debug_replacement_opt = "-fcompare-debug=-gtoggle";
3255 goto compare_debug_with_arg;
3262 case OPT_fcompare_debug_:
3263 compare_debug_replacement_opt = decoded->canonical_option[0];
3264 compare_debug_with_arg:
3265 gcc_assert (decoded->canonical_option_num_elements == 1);
3266 gcc_assert (arg != NULL);
3271 if (compare_debug < 0)
3272 compare_debug_opt = NULL;
3274 compare_debug_opt = arg;
3275 save_switch (compare_debug_replacement_opt, 0, NULL, validated);
3281 /* Pass the rest of this option to the assembler. */
3283 /* Split the argument at commas. */
3285 for (j = 0; arg[j]; j++)
3288 add_assembler_option (arg + prev, j - prev);
3292 /* Record the part after the last comma. */
3293 add_assembler_option (arg + prev, j - prev);
3301 /* Pass the rest of this option to the preprocessor. */
3303 /* Split the argument at commas. */
3305 for (j = 0; arg[j]; j++)
3308 add_preprocessor_option (arg + prev, j - prev);
3312 /* Record the part after the last comma. */
3313 add_preprocessor_option (arg + prev, j - prev);
3321 /* Split the argument at commas. */
3323 for (j = 0; arg[j]; j++)
3326 add_infile (save_string (arg + prev, j - prev), "*");
3329 /* Record the part after the last comma. */
3330 add_infile (arg + prev, "*");
3336 add_infile (arg, "*");
3340 case OPT_Xpreprocessor:
3341 add_preprocessor_option (arg, strlen (arg));
3345 case OPT_Xassembler:
3346 add_assembler_option (arg, strlen (arg));
3351 /* POSIX allows separation of -l and the lib arg; canonicalize
3352 by concatenating -l with its arg */
3353 add_infile (concat ("-l", arg, NULL), "*");
3358 /* Similarly, canonicalize -L for linkers that may not accept
3359 separate arguments. */
3360 save_switch (concat ("-L", arg, NULL), 0, NULL, validated);
3365 save_switch (concat ("-F", arg, NULL), 0, NULL, validated);
3368 case OPT_save_temps:
3369 save_temps_flag = SAVE_TEMPS_CWD;
3373 case OPT_save_temps_:
3374 if (strcmp (arg, "cwd") == 0)
3375 save_temps_flag = SAVE_TEMPS_CWD;
3376 else if (strcmp (arg, "obj") == 0
3377 || strcmp (arg, "object") == 0)
3378 save_temps_flag = SAVE_TEMPS_OBJ;
3380 fatal_error ("%qs is an unknown -save-temps option",
3381 decoded->orig_option_with_args_text);
3384 case OPT_no_canonical_prefixes:
3385 /* Already handled as a special case, so ignored here. */
3391 /* These options set the variables specified in common.opt
3392 automatically, but do need to be saved for spec
3398 struct user_specs *user = XNEW (struct user_specs);
3400 user->next = (struct user_specs *) 0;
3401 user->filename = arg;
3402 if (user_specs_tail)
3403 user_specs_tail->next = user;
3405 user_specs_head = user;
3406 user_specs_tail = user;
3412 target_system_root = arg;
3413 target_system_root_changed = 1;
3418 if (report_times_to_file)
3419 fclose (report_times_to_file);
3420 report_times_to_file = fopen (arg, "a");
3426 This is similar to -v except that there is no execution
3427 of the commands and the echoed arguments are quoted. It
3428 is intended for use in shell scripts to capture the
3429 driver-generated command line. */
3430 verbose_only_flag++;
3437 size_t len = strlen (arg);
3439 /* Catch the case where the user has forgotten to append a
3440 directory separator to the path. Note, they may be using
3441 -B to add an executable name prefix, eg "i386-elf-", in
3442 order to distinguish between multiple installations of
3443 GCC in the same directory. Hence we must check to see
3444 if appending a directory separator actually makes a
3445 valid directory name. */
3446 if (!IS_DIR_SEPARATOR (arg[len - 1])
3447 && is_directory (arg, false))
3449 char *tmp = XNEWVEC (char, len + 2);
3451 tmp[len] = DIR_SEPARATOR;
3456 add_prefix (&exec_prefixes, arg, NULL,
3457 PREFIX_PRIORITY_B_OPT, 0, 0);
3458 add_prefix (&startfile_prefixes, arg, NULL,
3459 PREFIX_PRIORITY_B_OPT, 0, 0);
3460 add_prefix (&include_prefixes, arg, NULL,
3461 PREFIX_PRIORITY_B_OPT, 0, 0);
3468 if (!strcmp (spec_lang, "none"))
3469 /* Suppress the warning if -xnone comes after the last input
3470 file, because alternate command interfaces like g++ might
3471 find it useful to place -xnone after each input file. */
3474 last_language_n_infiles = n_infiles;
3480 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3481 arg = convert_filename (arg, ! have_c, 0);
3483 /* Save the output name in case -save-temps=obj was used. */
3484 save_temps_prefix = xstrdup (arg);
3485 /* On some systems, ld cannot handle "-o" without a space. So
3486 split the option from its argument. */
3487 save_switch ("-o", 1, &arg, validated);
3490 case OPT_static_libgcc:
3491 case OPT_shared_libgcc:
3492 case OPT_static_libgfortran:
3493 case OPT_static_libstdc__:
3494 /* These are always valid, since gcc.c itself understands the
3495 first two, gfortranspec.c understands -static-libgfortran and
3496 g++spec.c understands -static-libstdc++ */
3501 /* Various driver options need no special processing at this
3502 point, having been handled in a prescan above or being
3503 handled by specs. */
3508 save_switch (decoded->canonical_option[0],
3509 decoded->canonical_option_num_elements - 1,
3510 &decoded->canonical_option[1], validated);
3514 /* Put the driver's standard set of option handlers in *HANDLERS. */
3517 set_option_handlers (struct cl_option_handlers *handlers)
3519 handlers->unknown_option_callback = driver_unknown_option_callback;
3520 handlers->wrong_lang_callback = driver_wrong_lang_callback;
3521 handlers->post_handling_callback = driver_post_handling_callback;
3522 handlers->num_handlers = 1;
3523 handlers->handlers[0].handler = driver_handle_option;
3524 handlers->handlers[0].mask = CL_DRIVER;
3527 /* Create the vector `switches' and its contents.
3528 Store its length in `n_switches'. */
3531 process_command (unsigned int decoded_options_count,
3532 struct cl_decoded_option *decoded_options)
3536 const char *tooldir_prefix;
3537 char *(*get_relative_prefix) (const char *, const char *,
3538 const char *) = NULL;
3539 struct cl_option_handlers handlers;
3542 gcc_exec_prefix = getenv ("GCC_EXEC_PREFIX");
3546 added_libraries = 0;
3548 /* Figure compiler version from version string. */
3550 compiler_version = temp1 = xstrdup (version_string);
3552 for (; *temp1; ++temp1)
3561 /* Handle any -no-canonical-prefixes flag early, to assign the function
3562 that builds relative prefixes. This function creates default search
3563 paths that are needed later in normal option handling. */
3565 for (j = 1; j < decoded_options_count; j++)
3567 if (decoded_options[j].opt_index == OPT_no_canonical_prefixes)
3569 get_relative_prefix = make_relative_prefix_ignore_links;
3573 if (! get_relative_prefix)
3574 get_relative_prefix = make_relative_prefix;
3576 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3577 see if we can create it from the pathname specified in
3578 decoded_options[0].arg. */
3580 gcc_libexec_prefix = standard_libexec_prefix;
3582 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3583 if (!gcc_exec_prefix)
3585 gcc_exec_prefix = get_relative_prefix (decoded_options[0].arg,
3586 standard_bindir_prefix,
3587 standard_exec_prefix);
3588 gcc_libexec_prefix = get_relative_prefix (decoded_options[0].arg,
3589 standard_bindir_prefix,
3590 standard_libexec_prefix);
3591 if (gcc_exec_prefix)
3592 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3596 /* make_relative_prefix requires a program name, but
3597 GCC_EXEC_PREFIX is typically a directory name with a trailing
3598 / (which is ignored by make_relative_prefix), so append a
3600 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL);
3601 gcc_libexec_prefix = get_relative_prefix (tmp_prefix,
3602 standard_exec_prefix,
3603 standard_libexec_prefix);
3605 /* The path is unrelocated, so fallback to the original setting. */
3606 if (!gcc_libexec_prefix)
3607 gcc_libexec_prefix = standard_libexec_prefix;
3613 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3614 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3615 or an automatically created GCC_EXEC_PREFIX from
3616 decoded_options[0].arg. */
3618 /* Do language-specific adjustment/addition of flags. */
3619 lang_specific_driver (&decoded_options, &decoded_options_count,
3622 if (gcc_exec_prefix)
3624 int len = strlen (gcc_exec_prefix);
3626 if (len > (int) sizeof ("/lib/gcc/") - 1
3627 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3629 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3630 if (IS_DIR_SEPARATOR (*temp)
3631 && strncmp (temp + 1, "lib", 3) == 0
3632 && IS_DIR_SEPARATOR (temp[4])
3633 && strncmp (temp + 5, "gcc", 3) == 0)
3634 len -= sizeof ("/lib/gcc/") - 1;
3637 set_std_prefix (gcc_exec_prefix, len);
3638 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3639 PREFIX_PRIORITY_LAST, 0, 0);
3640 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3641 PREFIX_PRIORITY_LAST, 0, 0);
3644 /* COMPILER_PATH and LIBRARY_PATH have values
3645 that are lists of directory names with colons. */
3647 temp = getenv ("COMPILER_PATH");
3650 const char *startp, *endp;
3651 char *nstore = (char *) alloca (strlen (temp) + 3);
3653 startp = endp = temp;
3656 if (*endp == PATH_SEPARATOR || *endp == 0)
3658 strncpy (nstore, startp, endp - startp);
3660 strcpy (nstore, concat (".", dir_separator_str, NULL));
3661 else if (!IS_DIR_SEPARATOR (endp[-1]))
3663 nstore[endp - startp] = DIR_SEPARATOR;
3664 nstore[endp - startp + 1] = 0;
3667 nstore[endp - startp] = 0;
3668 add_prefix (&exec_prefixes, nstore, 0,
3669 PREFIX_PRIORITY_LAST, 0, 0);
3670 add_prefix (&include_prefixes, nstore, 0,
3671 PREFIX_PRIORITY_LAST, 0, 0);
3674 endp = startp = endp + 1;
3681 temp = getenv (LIBRARY_PATH_ENV);
3682 if (temp && *cross_compile == '0')
3684 const char *startp, *endp;
3685 char *nstore = (char *) alloca (strlen (temp) + 3);
3687 startp = endp = temp;
3690 if (*endp == PATH_SEPARATOR || *endp == 0)
3692 strncpy (nstore, startp, endp - startp);
3694 strcpy (nstore, concat (".", dir_separator_str, NULL));
3695 else if (!IS_DIR_SEPARATOR (endp[-1]))
3697 nstore[endp - startp] = DIR_SEPARATOR;
3698 nstore[endp - startp + 1] = 0;
3701 nstore[endp - startp] = 0;
3702 add_prefix (&startfile_prefixes, nstore, NULL,
3703 PREFIX_PRIORITY_LAST, 0, 1);
3706 endp = startp = endp + 1;
3713 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3714 temp = getenv ("LPATH");
3715 if (temp && *cross_compile == '0')
3717 const char *startp, *endp;
3718 char *nstore = (char *) alloca (strlen (temp) + 3);
3720 startp = endp = temp;
3723 if (*endp == PATH_SEPARATOR || *endp == 0)
3725 strncpy (nstore, startp, endp - startp);
3727 strcpy (nstore, concat (".", dir_separator_str, NULL));
3728 else if (!IS_DIR_SEPARATOR (endp[-1]))
3730 nstore[endp - startp] = DIR_SEPARATOR;
3731 nstore[endp - startp + 1] = 0;
3734 nstore[endp - startp] = 0;
3735 add_prefix (&startfile_prefixes, nstore, NULL,
3736 PREFIX_PRIORITY_LAST, 0, 1);
3739 endp = startp = endp + 1;
3746 /* Process the options and store input files and switches in their
3749 last_language_n_infiles = -1;
3751 set_option_handlers (&handlers);
3753 for (j = 1; j < decoded_options_count; j++)
3755 switch (decoded_options[j].opt_index)
3767 for (j = 1; j < decoded_options_count; j++)
3769 if (decoded_options[j].opt_index == OPT_SPECIAL_input_file)
3771 const char *arg = decoded_options[j].arg;
3772 const char *p = strrchr (arg, '@');
3776 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3777 arg = convert_filename (arg, 0, access (arg, F_OK));
3779 /* For LTO static archive support we handle input file
3780 specifications that are composed of a filename and
3781 an offset like FNAME@OFFSET. */
3784 && sscanf (p, "@%li%n", &offset, &consumed) >= 1
3785 && strlen (p) == (unsigned int)consumed)
3787 fname = (char *)xmalloc (p - arg + 1);
3788 memcpy (fname, arg, p - arg);
3789 fname[p - arg] = '\0';
3790 /* Only accept non-stdin and existing FNAME parts, otherwise
3791 try with the full name. */
3792 if (strcmp (fname, "-") == 0 || access (fname, F_OK) < 0)
3795 fname = xstrdup (arg);
3799 fname = xstrdup (arg);
3801 if (strcmp (fname, "-") != 0 && access (fname, F_OK) < 0)
3802 perror_with_name (fname);
3804 add_infile (arg, spec_lang);
3810 read_cmdline_option (&global_options, &global_options_set,
3811 decoded_options + j, UNKNOWN_LOCATION,
3812 CL_DRIVER, &handlers, global_dc);
3815 /* If -save-temps=obj and -o name, create the prefix to use for %b.
3816 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
3817 if (save_temps_flag == SAVE_TEMPS_OBJ && save_temps_prefix != NULL)
3819 save_temps_length = strlen (save_temps_prefix);
3820 temp = strrchr (lbasename (save_temps_prefix), '.');
3823 save_temps_length -= strlen (temp);
3824 save_temps_prefix[save_temps_length] = '\0';
3828 else if (save_temps_prefix != NULL)
3830 free (save_temps_prefix);
3831 save_temps_prefix = NULL;
3834 if (save_temps_flag && use_pipes)
3836 /* -save-temps overrides -pipe, so that temp files are produced */
3837 if (save_temps_flag)
3838 warning (0, "-pipe ignored because -save-temps specified");
3844 const char *gcd = getenv ("GCC_COMPARE_DEBUG");
3846 if (gcd && gcd[0] == '-')
3849 compare_debug_opt = gcd;
3851 else if (gcd && *gcd && strcmp (gcd, "0"))
3854 compare_debug_opt = "-gtoggle";
3857 else if (compare_debug < 0)
3860 gcc_assert (!compare_debug_opt);
3863 /* Set up the search paths. We add directories that we expect to
3864 contain GNU Toolchain components before directories specified by
3865 the machine description so that we will find GNU components (like
3866 the GNU assembler) before those of the host system. */
3868 /* If we don't know where the toolchain has been installed, use the
3869 configured-in locations. */
3870 if (!gcc_exec_prefix)
3873 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
3874 PREFIX_PRIORITY_LAST, 1, 0);
3875 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
3876 PREFIX_PRIORITY_LAST, 2, 0);
3877 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3878 PREFIX_PRIORITY_LAST, 2, 0);
3880 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3881 PREFIX_PRIORITY_LAST, 1, 0);
3884 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix));
3885 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3886 dir_separator_str, NULL);
3888 /* Look for tools relative to the location from which the driver is
3889 running, or, if that is not available, the configured prefix. */
3891 = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
3892 spec_machine, dir_separator_str,
3893 spec_version, dir_separator_str, tooldir_prefix, NULL);
3895 add_prefix (&exec_prefixes,
3896 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3897 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0);
3898 add_prefix (&startfile_prefixes,
3899 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3900 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1);
3902 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
3903 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
3904 then consider it to relocate with the rest of the GCC installation
3905 if GCC_EXEC_PREFIX is set.
3906 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
3907 if (target_system_root && !target_system_root_changed && gcc_exec_prefix)
3909 char *tmp_prefix = get_relative_prefix (decoded_options[0].arg,
3910 standard_bindir_prefix,
3911 target_system_root);
3912 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
3914 target_system_root = tmp_prefix;
3915 target_system_root_changed = 1;
3920 /* More prefixes are enabled in main, after we read the specs file
3921 and determine whether this is cross-compilation or not. */
3923 if (n_infiles == last_language_n_infiles && spec_lang != 0)
3924 warning (0, "%<-x %s%> after last input file has no effect", spec_lang);
3926 if (compare_debug == 2 || compare_debug == 3)
3929 switches[n_switches].part1 = concat ("fcompare-debug=",
3932 switches[n_switches].args = 0;
3933 switches[n_switches].live_cond = 0;
3934 switches[n_switches].validated = 0;
3935 switches[n_switches].ordering = 0;
3940 /* Ensure we only invoke each subprocess once. */
3941 if (print_subprocess_help || print_help_list || print_version)
3945 /* Create a dummy input file, so that we can pass
3946 the help option on to the various sub-processes. */
3947 add_infile ("help-dummy", "c");
3951 switches[n_switches].part1 = 0;
3953 infiles[n_infiles].name = 0;
3956 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
3957 and place that in the environment. */
3960 set_collect_gcc_options (void)
3965 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
3967 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
3968 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
3971 for (i = 0; (int) i < n_switches; i++)
3973 const char *const *args;
3976 obstack_grow (&collect_obstack, " ", 1);
3980 /* Ignore elided switches. */
3981 if ((switches[i].live_cond
3982 & (SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC))
3986 obstack_grow (&collect_obstack, "'-", 2);
3987 q = switches[i].part1;
3988 while ((p = strchr (q, '\'')))
3990 obstack_grow (&collect_obstack, q, p - q);
3991 obstack_grow (&collect_obstack, "'\\''", 4);
3994 obstack_grow (&collect_obstack, q, strlen (q));
3995 obstack_grow (&collect_obstack, "'", 1);
3997 for (args = switches[i].args; args && *args; args++)
3999 obstack_grow (&collect_obstack, " '", 2);
4001 while ((p = strchr (q, '\'')))
4003 obstack_grow (&collect_obstack, q, p - q);
4004 obstack_grow (&collect_obstack, "'\\''", 4);
4007 obstack_grow (&collect_obstack, q, strlen (q));
4008 obstack_grow (&collect_obstack, "'", 1);
4011 obstack_grow (&collect_obstack, "\0", 1);
4012 xputenv (XOBFINISH (&collect_obstack, char *));
4015 /* Process a spec string, accumulating and running commands. */
4017 /* These variables describe the input file name.
4018 input_file_number is the index on outfiles of this file,
4019 so that the output file name can be stored for later use by %o.
4020 input_basename is the start of the part of the input file
4021 sans all directory names, and basename_length is the number
4022 of characters starting there excluding the suffix .c or whatever. */
4024 static const char *gcc_input_filename;
4025 static int input_file_number;
4026 size_t input_filename_length;
4027 static int basename_length;
4028 static int suffixed_basename_length;
4029 static const char *input_basename;
4030 static const char *input_suffix;
4031 #ifndef HOST_LACKS_INODE_NUMBERS
4032 static struct stat input_stat;
4034 static int input_stat_set;
4036 /* The compiler used to process the current input file. */
4037 static struct compiler *input_file_compiler;
4039 /* These are variables used within do_spec and do_spec_1. */
4041 /* Nonzero if an arg has been started and not yet terminated
4042 (with space, tab or newline). */
4043 static int arg_going;
4045 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4046 is a temporary file name. */
4047 static int delete_this_arg;
4049 /* Nonzero means %w has been seen; the next arg to be terminated
4050 is the output file name of this compilation. */
4051 static int this_is_output_file;
4053 /* Nonzero means %s has been seen; the next arg to be terminated
4054 is the name of a library file and we should try the standard
4055 search dirs for it. */
4056 static int this_is_library_file;
4058 /* Nonzero means %T has been seen; the next arg to be terminated
4059 is the name of a linker script and we should try all of the
4060 standard search dirs for it. If it is found insert a --script
4061 command line switch and then substitute the full path in place,
4062 otherwise generate an error message. */
4063 static int this_is_linker_script;
4065 /* Nonzero means that the input of this command is coming from a pipe. */
4066 static int input_from_pipe;
4068 /* Nonnull means substitute this for any suffix when outputting a switches
4070 static const char *suffix_subst;
4072 /* If there is an argument being accumulated, terminate it and store it. */
4075 end_going_arg (void)
4081 obstack_1grow (&obstack, 0);
4082 string = XOBFINISH (&obstack, const char *);
4083 if (this_is_library_file)
4084 string = find_file (string);
4085 if (this_is_linker_script)
4087 char * full_script_path = find_a_file (&startfile_prefixes, string, R_OK, true);
4089 if (full_script_path == NULL)
4091 error ("unable to locate default linker script %qs in the library search paths", string);
4092 /* Script was not found on search path. */
4095 store_arg ("--script", false, false);
4096 string = full_script_path;
4098 store_arg (string, delete_this_arg, this_is_output_file);
4099 if (this_is_output_file)
4100 outfiles[input_file_number] = string;
4106 /* Parse the WRAPPER string which is a comma separated list of the command line
4107 and insert them into the beginning of argbuf. */
4110 insert_wrapper (const char *wrapper)
4114 char *buf = xstrdup (wrapper);
4116 unsigned int old_length = VEC_length (const_char_p, argbuf);
4124 while ((p = strchr (p, ',')) != NULL);
4126 VEC_safe_grow (const_char_p, heap, argbuf, old_length + n);
4127 memmove (VEC_address (const_char_p, argbuf) + n,
4128 VEC_address (const_char_p, argbuf),
4129 old_length * sizeof (const_char_p));
4140 VEC_replace (const_char_p, argbuf, i, p);
4143 while ((p = strchr (p, ',')) != NULL);
4144 gcc_assert (i == n);
4147 /* Process the spec SPEC and run the commands specified therein.
4148 Returns 0 if the spec is successfully processed; -1 if failed. */
4151 do_spec (const char *spec)
4155 value = do_spec_2 (spec);
4157 /* Force out any unfinished command.
4158 If -pipe, this forces out the last command if it ended in `|'. */
4161 if (VEC_length (const_char_p, argbuf) > 0
4162 && !strcmp (VEC_last (const_char_p, argbuf), "|"))
4163 VEC_pop (const_char_p, argbuf);
4165 set_collect_gcc_options ();
4167 if (VEC_length (const_char_p, argbuf) > 0)
4175 do_spec_2 (const char *spec)
4181 delete_this_arg = 0;
4182 this_is_output_file = 0;
4183 this_is_library_file = 0;
4184 this_is_linker_script = 0;
4185 input_from_pipe = 0;
4186 suffix_subst = NULL;
4188 result = do_spec_1 (spec, 0, NULL);
4196 /* Process the given spec string and add any new options to the end
4197 of the switches/n_switches array. */
4200 do_option_spec (const char *name, const char *spec)
4202 unsigned int i, value_count, value_len;
4203 const char *p, *q, *value;
4204 char *tmp_spec, *tmp_spec_p;
4206 if (configure_default_options[0].name == NULL)
4209 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4210 if (strcmp (configure_default_options[i].name, name) == 0)
4212 if (i == ARRAY_SIZE (configure_default_options))
4215 value = configure_default_options[i].value;
4216 value_len = strlen (value);
4218 /* Compute the size of the final spec. */
4221 while ((p = strstr (p, "%(VALUE)")) != NULL)
4227 /* Replace each %(VALUE) by the specified value. */
4228 tmp_spec = (char *) alloca (strlen (spec) + 1
4229 + value_count * (value_len - strlen ("%(VALUE)")));
4230 tmp_spec_p = tmp_spec;
4232 while ((p = strstr (q, "%(VALUE)")) != NULL)
4234 memcpy (tmp_spec_p, q, p - q);
4235 tmp_spec_p = tmp_spec_p + (p - q);
4236 memcpy (tmp_spec_p, value, value_len);
4237 tmp_spec_p += value_len;
4238 q = p + strlen ("%(VALUE)");
4240 strcpy (tmp_spec_p, q);
4242 do_self_spec (tmp_spec);
4245 /* Process the given spec string and add any new options to the end
4246 of the switches/n_switches array. */
4249 do_self_spec (const char *spec)
4254 do_spec_1 (" ", 0, NULL);
4256 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4257 do_self_specs adds the replacements to switches array, so it shouldn't
4258 be processed afterwards. */
4259 for (i = 0; i < n_switches; i++)
4260 if ((switches[i].live_cond & SWITCH_IGNORE))
4261 switches[i].live_cond |= SWITCH_IGNORE_PERMANENTLY;
4263 if (VEC_length (const_char_p, argbuf) > 0)
4265 const char **argbuf_copy;
4266 struct cl_decoded_option *decoded_options;
4267 struct cl_option_handlers handlers;
4268 unsigned int decoded_options_count;
4271 /* Create a copy of argbuf with a dummy argv[0] entry for
4272 decode_cmdline_options_to_array. */
4273 argbuf_copy = XNEWVEC (const char *,
4274 VEC_length (const_char_p, argbuf) + 1);
4275 argbuf_copy[0] = "";
4276 memcpy (argbuf_copy + 1, VEC_address (const_char_p, argbuf),
4277 VEC_length (const_char_p, argbuf) * sizeof (const char *));
4279 decode_cmdline_options_to_array (VEC_length (const_char_p, argbuf) + 1,
4281 CL_DRIVER, &decoded_options,
4282 &decoded_options_count);
4284 set_option_handlers (&handlers);
4286 for (j = 1; j < decoded_options_count; j++)
4288 switch (decoded_options[j].opt_index)
4290 case OPT_SPECIAL_input_file:
4291 /* Specs should only generate options, not input
4293 if (strcmp (decoded_options[j].arg, "-") != 0)
4294 fatal_error ("switch %qs does not start with %<-%>",
4295 decoded_options[j].arg);
4297 fatal_error ("spec-generated switch is just %<-%>");
4300 case OPT_fcompare_debug_second:
4301 case OPT_fcompare_debug:
4302 case OPT_fcompare_debug_:
4304 /* Avoid duplicate processing of some options from
4305 compare-debug specs; just save them here. */
4306 save_switch (decoded_options[j].canonical_option[0],
4307 (decoded_options[j].canonical_option_num_elements
4309 &decoded_options[j].canonical_option[1], false);
4313 read_cmdline_option (&global_options, &global_options_set,
4314 decoded_options + j, UNKNOWN_LOCATION,
4315 CL_DRIVER, &handlers, global_dc);
4321 switches[n_switches].part1 = 0;
4325 /* Callback for processing %D and %I specs. */
4327 struct spec_path_info {
4332 bool separate_options;
4336 spec_path (char *path, void *data)
4338 struct spec_path_info *info = (struct spec_path_info *) data;
4342 if (info->omit_relative && !IS_ABSOLUTE_PATH (path))
4345 if (info->append_len != 0)
4347 len = strlen (path);
4348 memcpy (path + len, info->append, info->append_len + 1);
4351 if (!is_directory (path, true))
4354 do_spec_1 (info->option, 1, NULL);
4355 if (info->separate_options)
4356 do_spec_1 (" ", 0, NULL);
4358 if (info->append_len == 0)
4360 len = strlen (path);
4361 save = path[len - 1];
4362 if (IS_DIR_SEPARATOR (path[len - 1]))
4363 path[len - 1] = '\0';
4366 do_spec_1 (path, 1, NULL);
4367 do_spec_1 (" ", 0, NULL);
4369 /* Must not damage the original path. */
4370 if (info->append_len == 0)
4371 path[len - 1] = save;
4376 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4380 create_at_file (char **argv)
4382 char *temp_file = make_temp_file ("");
4383 char *at_argument = concat ("@", temp_file, NULL);
4384 FILE *f = fopen (temp_file, "w");
4388 fatal_error ("could not open temporary response file %s",
4391 status = writeargv (argv, f);
4394 fatal_error ("could not write to temporary response file %s",
4397 status = fclose (f);
4400 fatal_error ("could not close temporary response file %s",
4403 store_arg (at_argument, 0, 0);
4405 record_temp_file (temp_file, !save_temps_flag, !save_temps_flag);
4408 /* True if we should compile INFILE. */
4411 compile_input_file_p (struct infile *infile)
4413 if ((!infile->language) || (infile->language[0] != '*'))
4414 if (infile->incompiler == input_file_compiler)
4419 /* Process each member of VEC as a spec. */
4422 do_specs_vec (VEC(char_p,heap) *vec)
4427 FOR_EACH_VEC_ELT (char_p, vec, ix, opt)
4429 do_spec_1 (opt, 1, NULL);
4430 /* Make each accumulated option a separate argument. */
4431 do_spec_1 (" ", 0, NULL);
4435 /* Process the sub-spec SPEC as a portion of a larger spec.
4436 This is like processing a whole spec except that we do
4437 not initialize at the beginning and we do not supply a
4438 newline by default at the end.
4439 INSWITCH nonzero means don't process %-sequences in SPEC;
4440 in this case, % is treated as an ordinary character.
4441 This is used while substituting switches.
4442 INSWITCH nonzero also causes SPC not to terminate an argument.
4444 Value is zero unless a line was finished
4445 and the command on that line reported an error. */
4448 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4450 const char *p = spec;
4455 /* If it's an empty string argument to a switch, keep it as is. */
4456 if (inswitch && !*p)
4460 /* If substituting a switch, treat all chars like letters.
4461 Otherwise, NL, SPC, TAB and % are special. */
4462 switch (inswitch ? 'a' : c)
4467 if (VEC_length (const_char_p, argbuf) > 0
4468 && !strcmp (VEC_last (const_char_p, argbuf), "|"))
4470 /* A `|' before the newline means use a pipe here,
4471 but only if -pipe was specified.
4472 Otherwise, execute now and don't pass the `|' as an arg. */
4475 input_from_pipe = 1;
4479 VEC_pop (const_char_p, argbuf);
4482 set_collect_gcc_options ();
4484 if (VEC_length (const_char_p, argbuf) > 0)
4490 /* Reinitialize for a new command, and for a new argument. */
4493 delete_this_arg = 0;
4494 this_is_output_file = 0;
4495 this_is_library_file = 0;
4496 this_is_linker_script = 0;
4497 input_from_pipe = 0;
4504 obstack_1grow (&obstack, c);
4512 /* Reinitialize for a new argument. */
4513 delete_this_arg = 0;
4514 this_is_output_file = 0;
4515 this_is_library_file = 0;
4516 this_is_linker_script = 0;
4523 fatal_error ("spec %qs invalid", spec);
4526 if (save_temps_length)
4527 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4529 obstack_grow (&obstack, input_basename, basename_length);
4530 if (compare_debug < 0)
4531 obstack_grow (&obstack, ".gk", 3);
4536 if (save_temps_length)
4537 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4539 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4540 if (compare_debug < 0)
4541 obstack_grow (&obstack, ".gk", 3);
4546 delete_this_arg = 2;
4549 /* Dump out the directories specified with LIBRARY_PATH,
4550 followed by the absolute directories
4551 that we search for startfiles. */
4554 struct spec_path_info info;
4557 info.append_len = 0;
4558 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4559 /* Used on systems which record the specified -L dirs
4560 and use them to search for dynamic linking.
4561 Relative directories always come from -B,
4562 and it is better not to use them for searching
4563 at run time. In particular, stage1 loses. */
4564 info.omit_relative = true;
4566 info.omit_relative = false;
4568 info.separate_options = false;
4570 for_each_path (&startfile_prefixes, true, 0, spec_path, &info);
4575 /* %efoo means report an error with `foo' as error message
4576 and don't execute any more commands for this file. */
4580 while (*p != 0 && *p != '\n')
4582 buf = (char *) alloca (p - q + 1);
4583 strncpy (buf, q, p - q);
4585 error ("%s", _(buf));
4590 /* %nfoo means report a notice with `foo' on stderr. */
4594 while (*p != 0 && *p != '\n')
4596 buf = (char *) alloca (p - q + 1);
4597 strncpy (buf, q, p - q);
4599 inform (0, "%s", _(buf));
4609 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4610 defined, and it is not a directory, and it is
4611 writable, use it. Otherwise, treat this like any
4612 other temporary file. */
4614 if ((!save_temps_flag)
4615 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4616 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4618 obstack_grow (&obstack, HOST_BIT_BUCKET,
4619 strlen (HOST_BIT_BUCKET));
4620 delete_this_arg = 0;
4625 goto create_temp_file;
4629 obstack_1grow (&obstack, '-');
4630 delete_this_arg = 0;
4633 /* consume suffix */
4634 while (*p == '.' || ISALNUM ((unsigned char) *p))
4636 if (p[0] == '%' && p[1] == 'O')
4641 goto create_temp_file;
4645 /* consume suffix */
4646 while (*p == '.' || ISALNUM ((unsigned char) *p))
4648 if (p[0] == '%' && p[1] == 'O')
4653 goto create_temp_file;
4659 struct temp_name *t;
4661 const char *suffix = p;
4662 char *saved_suffix = NULL;
4664 while (*p == '.' || ISALNUM ((unsigned char) *p))
4666 suffix_length = p - suffix;
4667 if (p[0] == '%' && p[1] == 'O')
4670 /* We don't support extra suffix characters after %O. */
4671 if (*p == '.' || ISALNUM ((unsigned char) *p))
4672 fatal_error ("spec %qs has invalid %<%%0%c%>", spec, *p);
4673 if (suffix_length == 0)
4674 suffix = TARGET_OBJECT_SUFFIX;
4678 = XNEWVEC (char, suffix_length
4679 + strlen (TARGET_OBJECT_SUFFIX));
4680 strncpy (saved_suffix, suffix, suffix_length);
4681 strcpy (saved_suffix + suffix_length,
4682 TARGET_OBJECT_SUFFIX);
4684 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4687 if (compare_debug < 0)
4689 suffix = concat (".gk", suffix, NULL);
4693 /* If -save-temps=obj and -o were specified, use that for the
4695 if (save_temps_length)
4698 temp_filename_length
4699 = save_temps_length + suffix_length + 1;
4700 tmp = (char *) alloca (temp_filename_length);
4701 memcpy (tmp, save_temps_prefix, save_temps_length);
4702 memcpy (tmp + save_temps_length, suffix, suffix_length);
4703 tmp[save_temps_length + suffix_length] = '\0';
4704 temp_filename = save_string (tmp,
4705 temp_filename_length + 1);
4706 obstack_grow (&obstack, temp_filename,
4707 temp_filename_length);
4709 delete_this_arg = 0;
4713 /* If the gcc_input_filename has the same suffix specified
4714 for the %g, %u, or %U, and -save-temps is specified,
4715 we could end up using that file as an intermediate
4716 thus clobbering the user's source file (.e.g.,
4717 gcc -save-temps foo.s would clobber foo.s with the
4718 output of cpp0). So check for this condition and
4719 generate a temp file as the intermediate. */
4721 if (save_temps_flag)
4724 temp_filename_length = basename_length + suffix_length + 1;
4725 tmp = (char *) alloca (temp_filename_length);
4726 memcpy (tmp, input_basename, basename_length);
4727 memcpy (tmp + basename_length, suffix, suffix_length);
4728 tmp[basename_length + suffix_length] = '\0';
4729 temp_filename = tmp;
4731 if (strcmp (temp_filename, gcc_input_filename) != 0)
4733 #ifndef HOST_LACKS_INODE_NUMBERS
4734 struct stat st_temp;
4736 /* Note, set_input() resets input_stat_set to 0. */
4737 if (input_stat_set == 0)
4739 input_stat_set = stat (gcc_input_filename,
4741 if (input_stat_set >= 0)
4745 /* If we have the stat for the gcc_input_filename
4746 and we can do the stat for the temp_filename
4747 then the they could still refer to the same
4748 file if st_dev/st_ino's are the same. */
4749 if (input_stat_set != 1
4750 || stat (temp_filename, &st_temp) < 0
4751 || input_stat.st_dev != st_temp.st_dev
4752 || input_stat.st_ino != st_temp.st_ino)
4754 /* Just compare canonical pathnames. */
4755 char* input_realname = lrealpath (gcc_input_filename);
4756 char* temp_realname = lrealpath (temp_filename);
4757 bool files_differ = strcmp (input_realname, temp_realname);
4758 free (input_realname);
4759 free (temp_realname);
4763 temp_filename = save_string (temp_filename,
4764 temp_filename_length + 1);
4765 obstack_grow (&obstack, temp_filename,
4766 temp_filename_length);
4768 delete_this_arg = 0;
4774 /* See if we already have an association of %g/%u/%U and
4776 for (t = temp_names; t; t = t->next)
4777 if (t->length == suffix_length
4778 && strncmp (t->suffix, suffix, suffix_length) == 0
4779 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
4782 /* Make a new association if needed. %u and %j
4784 if (t == 0 || c == 'u' || c == 'j')
4788 t = XNEW (struct temp_name);
4789 t->next = temp_names;
4792 t->length = suffix_length;
4795 t->suffix = saved_suffix;
4796 saved_suffix = NULL;
4799 t->suffix = save_string (suffix, suffix_length);
4800 t->unique = (c == 'u' || c == 'U' || c == 'j');
4801 temp_filename = make_temp_file (t->suffix);
4802 temp_filename_length = strlen (temp_filename);
4803 t->filename = temp_filename;
4804 t->filename_length = temp_filename_length;
4808 free (saved_suffix);
4810 obstack_grow (&obstack, t->filename, t->filename_length);
4811 delete_this_arg = 1;
4819 if (at_file_supplied)
4821 /* We are going to expand `%i' to `@FILE', where FILE
4822 is a newly-created temporary filename. The filenames
4823 that would usually be expanded in place of %o will be
4824 written to the temporary file. */
4829 for (i = 0; i < n_infiles; i++)
4830 if (compile_input_file_p (&infiles[i]))
4833 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
4835 /* Copy the strings over. */
4836 for (i = 0, j = 0; i < n_infiles; i++)
4837 if (compile_input_file_p (&infiles[i]))
4839 argv[j] = CONST_CAST (char *, infiles[i].name);
4840 infiles[i].compiled = true;
4845 create_at_file (argv);
4848 for (i = 0; (int) i < n_infiles; i++)
4849 if (compile_input_file_p (&infiles[i]))
4851 store_arg (infiles[i].name, 0, 0);
4852 infiles[i].compiled = true;
4857 obstack_grow (&obstack, gcc_input_filename,
4858 input_filename_length);
4865 struct spec_path_info info;
4869 do_spec_1 ("-imultilib", 1, NULL);
4870 /* Make this a separate argument. */
4871 do_spec_1 (" ", 0, NULL);
4872 do_spec_1 (multilib_dir, 1, NULL);
4873 do_spec_1 (" ", 0, NULL);
4878 do_spec_1 ("-imultiarch", 1, NULL);
4879 /* Make this a separate argument. */
4880 do_spec_1 (" ", 0, NULL);
4881 do_spec_1 (multiarch_dir, 1, NULL);
4882 do_spec_1 (" ", 0, NULL);
4885 if (gcc_exec_prefix)
4887 do_spec_1 ("-iprefix", 1, NULL);
4888 /* Make this a separate argument. */
4889 do_spec_1 (" ", 0, NULL);
4890 do_spec_1 (gcc_exec_prefix, 1, NULL);
4891 do_spec_1 (" ", 0, NULL);
4894 if (target_system_root_changed ||
4895 (target_system_root && target_sysroot_hdrs_suffix))
4897 do_spec_1 ("-isysroot", 1, NULL);
4898 /* Make this a separate argument. */
4899 do_spec_1 (" ", 0, NULL);
4900 do_spec_1 (target_system_root, 1, NULL);
4901 if (target_sysroot_hdrs_suffix)
4902 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
4903 do_spec_1 (" ", 0, NULL);
4906 info.option = "-isystem";
4907 info.append = "include";
4908 info.append_len = strlen (info.append);
4909 info.omit_relative = false;
4910 info.separate_options = true;
4912 for_each_path (&include_prefixes, false, info.append_len,
4915 info.append = "include-fixed";
4916 if (*sysroot_hdrs_suffix_spec)
4917 info.append = concat (info.append, dir_separator_str,
4918 multilib_dir, NULL);
4919 info.append_len = strlen (info.append);
4920 for_each_path (&include_prefixes, false, info.append_len,
4927 int max = n_infiles;
4928 max += lang_specific_extra_outfiles;
4930 if (HAVE_GNU_LD && at_file_supplied)
4932 /* We are going to expand `%o' to `@FILE', where FILE
4933 is a newly-created temporary filename. The filenames
4934 that would usually be expanded in place of %o will be
4935 written to the temporary file. */
4940 /* Convert OUTFILES into a form suitable for writeargv. */
4942 /* Determine how many are non-NULL. */
4943 for (n_files = 0, i = 0; i < max; i++)
4944 n_files += outfiles[i] != NULL;
4946 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
4948 /* Copy the strings over. */
4949 for (i = 0, j = 0; i < max; i++)
4952 argv[j] = CONST_CAST (char *, outfiles[i]);
4957 create_at_file (argv);
4960 for (i = 0; i < max; i++)
4962 store_arg (outfiles[i], 0, 0);
4967 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4972 this_is_library_file = 1;
4976 this_is_linker_script = 1;
4980 outfiles[input_file_number] = NULL;
4984 this_is_output_file = 1;
4989 unsigned int cur_index = VEC_length (const_char_p, argbuf);
4990 /* Handle the {...} following the %W. */
4992 fatal_error ("spec %qs has invalid %<%%W%c%>", spec, *p);
4993 p = handle_braces (p + 1);
4997 /* If any args were output, mark the last one for deletion
4999 if (VEC_length (const_char_p, argbuf) != cur_index)
5000 record_temp_file (VEC_last (const_char_p, argbuf), 0, 1);
5004 /* %x{OPTION} records OPTION for %X to output. */
5012 /* Skip past the option value and make a copy. */
5014 fatal_error ("spec %qs has invalid %<%%x%c%>", spec, *p);
5017 string = save_string (p1 + 1, p - p1 - 2);
5019 /* See if we already recorded this option. */
5020 FOR_EACH_VEC_ELT (char_p, linker_options, ix, opt)
5021 if (! strcmp (string, opt))
5027 /* This option is new; add it. */
5028 add_linker_option (string, strlen (string));
5032 /* Dump out the options accumulated previously using %x. */
5034 do_specs_vec (linker_options);
5037 /* Dump out the options accumulated previously using -Wa,. */
5039 do_specs_vec (assembler_options);
5042 /* Dump out the options accumulated previously using -Wp,. */
5044 do_specs_vec (preprocessor_options);
5047 /* Here are digits and numbers that just process
5048 a certain constant string as a spec. */
5051 value = do_spec_1 (cc1_spec, 0, NULL);
5057 value = do_spec_1 (cc1plus_spec, 0, NULL);
5063 value = do_spec_1 (asm_spec, 0, NULL);
5069 value = do_spec_1 (asm_final_spec, 0, NULL);
5076 const char *const spec
5077 = (input_file_compiler->cpp_spec
5078 ? input_file_compiler->cpp_spec
5080 value = do_spec_1 (spec, 0, NULL);
5087 value = do_spec_1 (endfile_spec, 0, NULL);
5093 value = do_spec_1 (link_spec, 0, NULL);
5099 value = do_spec_1 (lib_spec, 0, NULL);
5105 value = do_spec_1 (libgcc_spec, 0, NULL);
5111 /* We assume there is a directory
5112 separator at the end of this string. */
5113 if (target_system_root)
5115 obstack_grow (&obstack, target_system_root,
5116 strlen (target_system_root));
5117 if (target_sysroot_suffix)
5118 obstack_grow (&obstack, target_sysroot_suffix,
5119 strlen (target_sysroot_suffix));
5124 value = do_spec_1 (startfile_spec, 0, NULL);
5129 /* Here we define characters other than letters and digits. */
5132 p = handle_braces (p);
5138 p = handle_spec_function (p);
5144 obstack_1grow (&obstack, '%');
5151 while (p[len] && p[len] != ' ' && p[len] != '%')
5153 suffix_subst = save_string (p - 1, len + 1);
5158 /* Henceforth ignore the option(s) matching the pattern
5164 int have_wildcard = 0;
5169 switch_option = SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC;
5171 switch_option = SWITCH_IGNORE;
5173 while (p[len] && p[len] != ' ' && p[len] != '\t')
5176 if (p[len-1] == '*')
5179 for (i = 0; i < n_switches; i++)
5180 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5181 && (have_wildcard || switches[i].part1[len] == '\0'))
5183 switches[i].live_cond |= switch_option;
5184 switches[i].validated = 1;
5192 if (soft_matched_part)
5194 if (soft_matched_part[0])
5195 do_spec_1 (soft_matched_part, 1, NULL);
5196 do_spec_1 (" ", 0, NULL);
5199 /* Catch the case where a spec string contains something like
5200 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5201 hand side of the :. */
5202 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5205 /* Process a string found as the value of a spec given by name.
5206 This feature allows individual machine descriptions
5207 to add and use their own specs.
5208 %[...] modifies -D options the way %P does;
5209 %(...) uses the spec unmodified. */
5211 warning (0, "use of obsolete %%[ operator in specs");
5214 const char *name = p;
5215 struct spec_list *sl;
5218 /* The string after the S/P is the name of a spec that is to be
5220 while (*p && *p != ')' && *p != ']')
5223 /* See if it's in the list. */
5224 for (len = p - name, sl = specs; sl; sl = sl->next)
5225 if (sl->name_len == len && !strncmp (sl->name, name, len))
5227 name = *(sl->ptr_spec);
5229 fnotice (stderr, "Processing spec %c%s%c, which is '%s'\n",
5230 c, sl->name, (c == '(') ? ')' : ']', name);
5239 value = do_spec_1 (name, 0, NULL);
5245 char *x = (char *) alloca (strlen (name) * 2 + 1);
5247 const char *y = name;
5250 /* Copy all of NAME into BUF, but put __ after
5251 every -D and at the end of each arg. */
5254 if (! strncmp (y, "-D", 2))
5265 && (*y == ' ' || *y == '\t' || *y == '='
5266 || *y == '}' || *y == 0))
5279 value = do_spec_1 (buf, 0, NULL);
5285 /* Discard the closing paren or bracket. */
5292 error ("spec failure: unrecognized spec option %qc", c);
5298 /* Backslash: treat next character as ordinary. */
5303 /* Ordinary character: put it into the current argument. */
5304 obstack_1grow (&obstack, c);
5308 /* End of string. If we are processing a spec function, we need to
5309 end any pending argument. */
5310 if (processing_spec_function)
5316 /* Look up a spec function. */
5318 static const struct spec_function *
5319 lookup_spec_function (const char *name)
5321 const struct spec_function *sf;
5323 for (sf = static_spec_functions; sf->name != NULL; sf++)
5324 if (strcmp (sf->name, name) == 0)
5330 /* Evaluate a spec function. */
5333 eval_spec_function (const char *func, const char *args)
5335 const struct spec_function *sf;
5336 const char *funcval;
5338 /* Saved spec processing context. */
5339 VEC(const_char_p,heap) *save_argbuf;
5342 int save_delete_this_arg;
5343 int save_this_is_output_file;
5344 int save_this_is_library_file;
5345 int save_input_from_pipe;
5346 int save_this_is_linker_script;
5347 const char *save_suffix_subst;
5350 sf = lookup_spec_function (func);
5352 fatal_error ("unknown spec function %qs", func);
5354 /* Push the spec processing context. */
5355 save_argbuf = argbuf;
5357 save_arg_going = arg_going;
5358 save_delete_this_arg = delete_this_arg;
5359 save_this_is_output_file = this_is_output_file;
5360 save_this_is_library_file = this_is_library_file;
5361 save_this_is_linker_script = this_is_linker_script;
5362 save_input_from_pipe = input_from_pipe;
5363 save_suffix_subst = suffix_subst;
5365 /* Create a new spec processing context, and build the function
5369 if (do_spec_2 (args) < 0)
5370 fatal_error ("error in args to spec function %qs", func);
5372 /* argbuf_index is an index for the next argument to be inserted, and
5373 so contains the count of the args already inserted. */
5375 funcval = (*sf->func) (VEC_length (const_char_p, argbuf),
5376 VEC_address (const_char_p, argbuf));
5378 /* Pop the spec processing context. */
5379 VEC_free (const_char_p, heap, argbuf);
5380 argbuf = save_argbuf;
5382 arg_going = save_arg_going;
5383 delete_this_arg = save_delete_this_arg;
5384 this_is_output_file = save_this_is_output_file;
5385 this_is_library_file = save_this_is_library_file;
5386 this_is_linker_script = save_this_is_linker_script;
5387 input_from_pipe = save_input_from_pipe;
5388 suffix_subst = save_suffix_subst;
5393 /* Handle a spec function call of the form:
5397 ARGS is processed as a spec in a separate context and split into an
5398 argument vector in the normal fashion. The function returns a string
5399 containing a spec which we then process in the caller's context, or
5400 NULL if no processing is required. */
5403 handle_spec_function (const char *p)
5406 const char *endp, *funcval;
5409 processing_spec_function++;
5411 /* Get the function name. */
5412 for (endp = p; *endp != '\0'; endp++)
5414 if (*endp == '(') /* ) */
5416 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5417 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5418 fatal_error ("malformed spec function name");
5420 if (*endp != '(') /* ) */
5421 fatal_error ("no arguments for spec function");
5422 func = save_string (p, endp - p);
5425 /* Get the arguments. */
5426 for (count = 0; *endp != '\0'; endp++)
5435 else if (*endp == '(') /* ) */
5440 fatal_error ("malformed spec function arguments");
5441 args = save_string (p, endp - p);
5444 /* p now points to just past the end of the spec function expression. */
5446 funcval = eval_spec_function (func, args);
5447 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5453 processing_spec_function--;
5458 /* Inline subroutine of handle_braces. Returns true if the current
5459 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5461 input_suffix_matches (const char *atom, const char *end_atom)
5463 return (input_suffix
5464 && !strncmp (input_suffix, atom, end_atom - atom)
5465 && input_suffix[end_atom - atom] == '\0');
5468 /* Subroutine of handle_braces. Returns true if the current
5469 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5471 input_spec_matches (const char *atom, const char *end_atom)
5473 return (input_file_compiler
5474 && input_file_compiler->suffix
5475 && input_file_compiler->suffix[0] != '\0'
5476 && !strncmp (input_file_compiler->suffix + 1, atom,
5478 && input_file_compiler->suffix[end_atom - atom + 1] == '\0');
5481 /* Subroutine of handle_braces. Returns true if a switch
5482 matching the atom bracketed by ATOM and END_ATOM appeared on the
5485 switch_matches (const char *atom, const char *end_atom, int starred)
5488 int len = end_atom - atom;
5489 int plen = starred ? len : -1;
5491 for (i = 0; i < n_switches; i++)
5492 if (!strncmp (switches[i].part1, atom, len)
5493 && (starred || switches[i].part1[len] == '\0')
5494 && check_live_switch (i, plen))
5500 /* Inline subroutine of handle_braces. Mark all of the switches which
5501 match ATOM (extends to END_ATOM; STARRED indicates whether there
5502 was a star after the atom) for later processing. */
5504 mark_matching_switches (const char *atom, const char *end_atom, int starred)
5507 int len = end_atom - atom;
5508 int plen = starred ? len : -1;
5510 for (i = 0; i < n_switches; i++)
5511 if (!strncmp (switches[i].part1, atom, len)
5512 && (starred || switches[i].part1[len] == '\0')
5513 && check_live_switch (i, plen))
5514 switches[i].ordering = 1;
5517 /* Inline subroutine of handle_braces. Process all the currently
5518 marked switches through give_switch, and clear the marks. */
5520 process_marked_switches (void)
5524 for (i = 0; i < n_switches; i++)
5525 if (switches[i].ordering == 1)
5527 switches[i].ordering = 0;
5532 /* Handle a %{ ... } construct. P points just inside the leading {.
5533 Returns a pointer one past the end of the brace block, or 0
5534 if we call do_spec_1 and that returns -1. */
5537 handle_braces (const char *p)
5539 const char *atom, *end_atom;
5540 const char *d_atom = NULL, *d_end_atom = NULL;
5541 const char *orig = p;
5549 bool a_must_be_last = false;
5550 bool ordered_set = false;
5551 bool disjunct_set = false;
5552 bool disj_matched = false;
5553 bool disj_starred = true;
5554 bool n_way_choice = false;
5555 bool n_way_matched = false;
5557 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5564 /* Scan one "atom" (S in the description above of %{}, possibly
5565 with '!', '.', '@', ',', or '*' modifiers). */
5567 a_is_suffix = false;
5568 a_is_starred = false;
5569 a_is_negated = false;
5570 a_is_spectype = false;
5574 p++, a_is_negated = true;
5578 p++, a_is_suffix = true;
5580 p++, a_is_spectype = true;
5583 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5584 || *p == ',' || *p == '.' || *p == '@')
5589 p++, a_is_starred = 1;
5595 /* Substitute the switch(es) indicated by the current atom. */
5597 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5598 || a_is_spectype || atom == end_atom)
5601 mark_matching_switches (atom, end_atom, a_is_starred);
5604 process_marked_switches ();
5608 /* Substitute some text if the current atom appears as a switch
5610 disjunct_set = true;
5614 if (atom == end_atom)
5616 if (!n_way_choice || disj_matched || *p == '|'
5617 || a_is_negated || a_is_suffix || a_is_spectype
5621 /* An empty term may appear as the last choice of an
5622 N-way choice set; it means "otherwise". */
5623 a_must_be_last = true;
5624 disj_matched = !n_way_matched;
5625 disj_starred = false;
5629 if ((a_is_suffix || a_is_spectype) && a_is_starred)
5633 disj_starred = false;
5635 /* Don't bother testing this atom if we already have a
5637 if (!disj_matched && !n_way_matched)
5640 a_matched = input_suffix_matches (atom, end_atom);
5641 else if (a_is_spectype)
5642 a_matched = input_spec_matches (atom, end_atom);
5644 a_matched = switch_matches (atom, end_atom, a_is_starred);
5646 if (a_matched != a_is_negated)
5648 disj_matched = true;
5650 d_end_atom = end_atom;
5657 /* Found the body, that is, the text to substitute if the
5658 current disjunction matches. */
5659 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5660 disj_matched && !n_way_matched);
5664 /* If we have an N-way choice, reset state for the next
5668 n_way_choice = true;
5669 n_way_matched |= disj_matched;
5670 disj_matched = false;
5671 disj_starred = true;
5672 d_atom = d_end_atom = NULL;
5681 while (*p++ != '}');
5686 fatal_error ("braced spec %qs is invalid at %qc", orig, *p);
5691 /* Subroutine of handle_braces. Scan and process a brace substitution body
5692 (X in the description of %{} syntax). P points one past the colon;
5693 ATOM and END_ATOM bracket the first atom which was found to be true
5694 (present) in the current disjunction; STARRED indicates whether all
5695 the atoms in the current disjunction were starred (for syntax validation);
5696 MATCHED indicates whether the disjunction matched or not, and therefore
5697 whether or not the body is to be processed through do_spec_1 or just
5698 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5702 process_brace_body (const char *p, const char *atom, const char *end_atom,
5703 int starred, int matched)
5705 const char *body, *end_body;
5706 unsigned int nesting_level;
5707 bool have_subst = false;
5709 /* Locate the closing } or ;, honoring nested braces.
5710 Trim trailing whitespace. */
5719 if (!--nesting_level)
5722 else if (*p == ';' && nesting_level == 1)
5724 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
5726 else if (*p == '\0')
5732 while (end_body[-1] == ' ' || end_body[-1] == '\t')
5735 if (have_subst && !starred)
5740 /* Copy the substitution body to permanent storage and execute it.
5741 If have_subst is false, this is a simple matter of running the
5742 body through do_spec_1... */
5743 char *string = save_string (body, end_body - body);
5746 if (do_spec_1 (string, 0, NULL) < 0)
5751 /* ... but if have_subst is true, we have to process the
5752 body once for each matching switch, with %* set to the
5753 variant part of the switch. */
5754 unsigned int hard_match_len = end_atom - atom;
5757 for (i = 0; i < n_switches; i++)
5758 if (!strncmp (switches[i].part1, atom, hard_match_len)
5759 && check_live_switch (i, hard_match_len))
5761 if (do_spec_1 (string, 0,
5762 &switches[i].part1[hard_match_len]) < 0)
5764 /* Pass any arguments this switch has. */
5766 suffix_subst = NULL;
5774 fatal_error ("braced spec body %qs is invalid", body);
5777 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5778 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5779 spec, or -1 if either exact match or %* is used.
5781 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5782 whose value does not begin with "no-" is obsoleted by the same value
5783 with the "no-", similarly for a switch with the "no-" prefix. */
5786 check_live_switch (int switchnum, int prefix_length)
5788 const char *name = switches[switchnum].part1;
5791 /* If we already processed this switch and determined if it was
5792 live or not, return our past determination. */
5793 if (switches[switchnum].live_cond != 0)
5794 return ((switches[switchnum].live_cond & SWITCH_LIVE) != 0
5795 && (switches[switchnum].live_cond & SWITCH_FALSE) == 0
5796 && (switches[switchnum].live_cond & SWITCH_IGNORE_PERMANENTLY)
5799 /* In the common case of {<at-most-one-letter>*}, a negating
5800 switch would always match, so ignore that case. We will just
5801 send the conflicting switches to the compiler phase. */
5802 if (prefix_length >= 0 && prefix_length <= 1)
5805 /* Now search for duplicate in a manner that depends on the name. */
5809 for (i = switchnum + 1; i < n_switches; i++)
5810 if (switches[i].part1[0] == 'O')
5812 switches[switchnum].validated = 1;
5813 switches[switchnum].live_cond = SWITCH_FALSE;
5818 case 'W': case 'f': case 'm':
5819 if (! strncmp (name + 1, "no-", 3))
5821 /* We have Xno-YYY, search for XYYY. */
5822 for (i = switchnum + 1; i < n_switches; i++)
5823 if (switches[i].part1[0] == name[0]
5824 && ! strcmp (&switches[i].part1[1], &name[4]))
5826 switches[switchnum].validated = 1;
5827 switches[switchnum].live_cond = SWITCH_FALSE;
5833 /* We have XYYY, search for Xno-YYY. */
5834 for (i = switchnum + 1; i < n_switches; i++)
5835 if (switches[i].part1[0] == name[0]
5836 && switches[i].part1[1] == 'n'
5837 && switches[i].part1[2] == 'o'
5838 && switches[i].part1[3] == '-'
5839 && !strcmp (&switches[i].part1[4], &name[1]))
5841 switches[switchnum].validated = 1;
5842 switches[switchnum].live_cond = SWITCH_FALSE;
5849 /* Otherwise the switch is live. */
5850 switches[switchnum].live_cond |= SWITCH_LIVE;
5854 /* Pass a switch to the current accumulating command
5855 in the same form that we received it.
5856 SWITCHNUM identifies the switch; it is an index into
5857 the vector of switches gcc received, which is `switches'.
5858 This cannot fail since it never finishes a command line.
5860 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5863 give_switch (int switchnum, int omit_first_word)
5865 if ((switches[switchnum].live_cond & SWITCH_IGNORE) != 0)
5868 if (!omit_first_word)
5870 do_spec_1 ("-", 0, NULL);
5871 do_spec_1 (switches[switchnum].part1, 1, NULL);
5874 if (switches[switchnum].args != 0)
5877 for (p = switches[switchnum].args; *p; p++)
5879 const char *arg = *p;
5881 do_spec_1 (" ", 0, NULL);
5884 unsigned length = strlen (arg);
5887 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5888 if (arg[length] == '.')
5890 (CONST_CAST(char *, arg))[length] = 0;
5894 do_spec_1 (arg, 1, NULL);
5896 (CONST_CAST(char *, arg))[length] = '.';
5897 do_spec_1 (suffix_subst, 1, NULL);
5900 do_spec_1 (arg, 1, NULL);
5904 do_spec_1 (" ", 0, NULL);
5905 switches[switchnum].validated = 1;
5908 /* Search for a file named NAME trying various prefixes including the
5909 user's -B prefix and some standard ones.
5910 Return the absolute file name found. If nothing is found, return NAME. */
5913 find_file (const char *name)
5915 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true);
5916 return newname ? newname : name;
5919 /* Determine whether a directory exists. If LINKER, return 0 for
5920 certain fixed names not needed by the linker. */
5923 is_directory (const char *path1, bool linker)
5930 /* Ensure the string ends with "/.". The resulting path will be a
5931 directory even if the given path is a symbolic link. */
5932 len1 = strlen (path1);
5933 path = (char *) alloca (3 + len1);
5934 memcpy (path, path1, len1);
5936 if (!IS_DIR_SEPARATOR (cp[-1]))
5937 *cp++ = DIR_SEPARATOR;
5941 /* Exclude directories that the linker is known to search. */
5943 && IS_DIR_SEPARATOR (path[0])
5945 && strncmp (path + 1, "lib", 3) == 0)
5947 && strncmp (path + 1, "usr", 3) == 0
5948 && IS_DIR_SEPARATOR (path[4])
5949 && strncmp (path + 5, "lib", 3) == 0)))
5952 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5955 /* Set up the various global variables to indicate that we're processing
5956 the input file named FILENAME. */
5959 set_input (const char *filename)
5963 gcc_input_filename = filename;
5964 input_filename_length = strlen (gcc_input_filename);
5965 input_basename = lbasename (gcc_input_filename);
5967 /* Find a suffix starting with the last period,
5968 and set basename_length to exclude that suffix. */
5969 basename_length = strlen (input_basename);
5970 suffixed_basename_length = basename_length;
5971 p = input_basename + basename_length;
5972 while (p != input_basename && *p != '.')
5974 if (*p == '.' && p != input_basename)
5976 basename_length = p - input_basename;
5977 input_suffix = p + 1;
5982 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5983 we will need to do a stat on the gcc_input_filename. The
5984 INPUT_STAT_SET signals that the stat is needed. */
5988 /* On fatal signals, delete all the temporary files. */
5991 fatal_signal (int signum)
5993 signal (signum, SIG_DFL);
5994 delete_failure_queue ();
5995 delete_temp_files ();
5996 /* Get the same signal again, this time not handled,
5997 so its normal effect occurs. */
5998 kill (getpid (), signum);
6001 /* Compare the contents of the two files named CMPFILE[0] and
6002 CMPFILE[1]. Return zero if they're identical, nonzero
6006 compare_files (char *cmpfile[])
6009 FILE *temp[2] = { NULL, NULL };
6015 void *map[2] = { NULL, NULL };
6017 for (i = 0; i < 2; i++)
6021 if (stat (cmpfile[i], &st) < 0 || !S_ISREG (st.st_mode))
6023 error ("%s: could not determine length of compare-debug file %s",
6024 gcc_input_filename, cmpfile[i]);
6029 length[i] = st.st_size;
6032 if (!ret && length[0] != length[1])
6034 error ("%s: -fcompare-debug failure (length)", gcc_input_filename);
6039 for (i = 0; i < 2; i++)
6041 int fd = open (cmpfile[i], O_RDONLY);
6044 error ("%s: could not open compare-debug file %s",
6045 gcc_input_filename, cmpfile[i]);
6050 map[i] = mmap (NULL, length[i], PROT_READ, MAP_PRIVATE, fd, 0);
6053 if (map[i] == (void *) MAP_FAILED)
6062 if (memcmp (map[0], map[1], length[0]) != 0)
6064 error ("%s: -fcompare-debug failure", gcc_input_filename);
6069 for (i = 0; i < 2; i++)
6071 munmap ((caddr_t) map[i], length[i]);
6080 for (i = 0; i < 2; i++)
6082 temp[i] = fopen (cmpfile[i], "r");
6085 error ("%s: could not open compare-debug file %s",
6086 gcc_input_filename, cmpfile[i]);
6092 if (!ret && temp[0] && temp[1])
6096 c0 = fgetc (temp[0]);
6097 c1 = fgetc (temp[1]);
6101 error ("%s: -fcompare-debug failure",
6102 gcc_input_filename);
6111 for (i = 1; i >= 0; i--)
6120 extern int main (int, char **);
6123 main (int argc, char **argv)
6127 int linker_was_run = 0;
6128 int lang_n_infiles = 0;
6129 int num_linker_inputs = 0;
6130 char *explicit_link_files;
6132 char *lto_wrapper_file;
6134 struct user_specs *uptr;
6135 char **old_argv = argv;
6136 struct cl_decoded_option *decoded_options;
6137 unsigned int decoded_options_count;
6139 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
6140 on ?: in file-scope variable initializations. */
6141 asm_debug = ASM_DEBUG_SPEC;
6143 p = argv[0] + strlen (argv[0]);
6144 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
6148 xmalloc_set_program_name (progname);
6150 expandargv (&argc, &argv);
6152 /* Determine if any expansions were made. */
6153 if (argv != old_argv)
6154 at_file_supplied = true;
6156 global_options = global_options_init;
6158 decode_cmdline_options_to_array (argc, CONST_CAST2 (const char **, char **,
6161 &decoded_options, &decoded_options_count);
6163 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6164 /* Perform host dependent initialization when needed. */
6165 GCC_DRIVER_HOST_INITIALIZATION;
6168 /* Unlock the stdio streams. */
6169 unlock_std_streams ();
6171 gcc_init_libintl ();
6173 diagnostic_initialize (global_dc, 0);
6174 if (atexit (delete_temp_files) != 0)
6175 fatal_error ("atexit failed");
6177 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
6178 signal (SIGINT, fatal_signal);
6180 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
6181 signal (SIGHUP, fatal_signal);
6183 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
6184 signal (SIGTERM, fatal_signal);
6186 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
6187 signal (SIGPIPE, fatal_signal);
6190 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6191 receive the signal. A different setting is inheritable */
6192 signal (SIGCHLD, SIG_DFL);
6195 /* Allocate the argument vector. */
6198 obstack_init (&obstack);
6200 /* Build multilib_select, et. al from the separate lines that make up each
6201 multilib selection. */
6203 const char *const *q = multilib_raw;
6206 obstack_init (&multilib_obstack);
6207 while ((p = *q++) != (char *) 0)
6208 obstack_grow (&multilib_obstack, p, strlen (p));
6210 obstack_1grow (&multilib_obstack, 0);
6211 multilib_select = XOBFINISH (&multilib_obstack, const char *);
6213 q = multilib_matches_raw;
6214 while ((p = *q++) != (char *) 0)
6215 obstack_grow (&multilib_obstack, p, strlen (p));
6217 obstack_1grow (&multilib_obstack, 0);
6218 multilib_matches = XOBFINISH (&multilib_obstack, const char *);
6220 q = multilib_exclusions_raw;
6221 while ((p = *q++) != (char *) 0)
6222 obstack_grow (&multilib_obstack, p, strlen (p));
6224 obstack_1grow (&multilib_obstack, 0);
6225 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *);
6228 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
6231 obstack_1grow (&multilib_obstack, ' ');
6232 obstack_grow (&multilib_obstack,
6233 multilib_defaults_raw[i],
6234 strlen (multilib_defaults_raw[i]));
6238 obstack_1grow (&multilib_obstack, 0);
6239 multilib_defaults = XOBFINISH (&multilib_obstack, const char *);
6242 #ifdef INIT_ENVIRONMENT
6243 /* Set up any other necessary machine specific environment variables. */
6244 xputenv (INIT_ENVIRONMENT);
6247 /* Make a table of what switches there are (switches, n_switches).
6248 Make a table of specified input files (infiles, n_infiles).
6249 Decode switches that are handled locally. */
6251 process_command (decoded_options_count, decoded_options);
6253 /* Initialize the vector of specs to just the default.
6254 This means one element containing 0s, as a terminator. */
6256 compilers = XNEWVAR (struct compiler, sizeof default_compilers);
6257 memcpy (compilers, default_compilers, sizeof default_compilers);
6258 n_compilers = n_default_compilers;
6260 /* Read specs from a file if there is one. */
6262 machine_suffix = concat (spec_machine, dir_separator_str,
6263 spec_version, dir_separator_str, NULL);
6264 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6266 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true);
6267 /* Read the specs file unless it is a default one. */
6268 if (specs_file != 0 && strcmp (specs_file, "specs"))
6269 read_specs (specs_file, TRUE);
6273 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6274 for any override of as, ld and libraries. */
6275 specs_file = (char *) alloca (strlen (standard_exec_prefix)
6276 + strlen (just_machine_suffix) + sizeof ("specs"));
6278 strcpy (specs_file, standard_exec_prefix);
6279 strcat (specs_file, just_machine_suffix);
6280 strcat (specs_file, "specs");
6281 if (access (specs_file, R_OK) == 0)
6282 read_specs (specs_file, TRUE);
6284 /* Process any configure-time defaults specified for the command line
6285 options, via OPTION_DEFAULT_SPECS. */
6286 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6287 do_option_spec (option_default_specs[i].name,
6288 option_default_specs[i].spec);
6290 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6291 of the command line. */
6293 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6294 do_self_spec (driver_self_specs[i]);
6298 enum save_temps save;
6300 if (!compare_debug_second)
6302 n_switches_debug_check[1] = n_switches;
6303 n_switches_alloc_debug_check[1] = n_switches_alloc;
6304 switches_debug_check[1] = XDUPVEC (struct switchstr, switches,
6307 do_self_spec ("%:compare-debug-self-opt()");
6308 n_switches_debug_check[0] = n_switches;
6309 n_switches_alloc_debug_check[0] = n_switches_alloc;
6310 switches_debug_check[0] = switches;
6312 n_switches = n_switches_debug_check[1];
6313 n_switches_alloc = n_switches_alloc_debug_check[1];
6314 switches = switches_debug_check[1];
6317 /* Avoid crash when computing %j in this early. */
6318 save = save_temps_flag;
6319 save_temps_flag = SAVE_TEMPS_NONE;
6321 compare_debug = -compare_debug;
6322 do_self_spec ("%:compare-debug-self-opt()");
6324 save_temps_flag = save;
6326 if (!compare_debug_second)
6328 n_switches_debug_check[1] = n_switches;
6329 n_switches_alloc_debug_check[1] = n_switches_alloc;
6330 switches_debug_check[1] = switches;
6331 compare_debug = -compare_debug;
6332 n_switches = n_switches_debug_check[0];
6333 n_switches_alloc = n_switches_debug_check[0];
6334 switches = switches_debug_check[0];
6338 /* If not cross-compiling, look for executables in the standard
6340 if (*cross_compile == '0')
6342 if (*md_exec_prefix)
6344 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6345 PREFIX_PRIORITY_LAST, 0, 0);
6349 /* Process sysroot_suffix_spec. */
6350 if (*sysroot_suffix_spec != 0
6351 && do_spec_2 (sysroot_suffix_spec) == 0)
6353 if (VEC_length (const_char_p, argbuf) > 1)
6354 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6355 else if (VEC_length (const_char_p, argbuf) == 1)
6356 target_sysroot_suffix = xstrdup (VEC_last (const_char_p, argbuf));
6359 #ifdef HAVE_LD_SYSROOT
6360 /* Pass the --sysroot option to the linker, if it supports that. If
6361 there is a sysroot_suffix_spec, it has already been processed by
6362 this point, so target_system_root really is the system root we
6364 if (target_system_root)
6366 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6367 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
6368 set_spec ("link", XOBFINISH (&obstack, const char *));
6372 /* Process sysroot_hdrs_suffix_spec. */
6373 if (*sysroot_hdrs_suffix_spec != 0
6374 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6376 if (VEC_length (const_char_p, argbuf) > 1)
6377 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6378 else if (VEC_length (const_char_p, argbuf) == 1)
6379 target_sysroot_hdrs_suffix = xstrdup (VEC_last (const_char_p, argbuf));
6382 /* Look for startfiles in the standard places. */
6383 if (*startfile_prefix_spec != 0
6384 && do_spec_2 (startfile_prefix_spec) == 0
6385 && do_spec_1 (" ", 0, NULL) == 0)
6389 FOR_EACH_VEC_ELT (const_char_p, argbuf, ndx, arg)
6390 add_sysrooted_prefix (&startfile_prefixes, arg, "BINUTILS",
6391 PREFIX_PRIORITY_LAST, 0, 1);
6393 /* We should eventually get rid of all these and stick to
6394 startfile_prefix_spec exclusively. */
6395 else if (*cross_compile == '0' || target_system_root)
6397 if (*md_startfile_prefix)
6398 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6399 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6401 if (*md_startfile_prefix_1)
6402 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6403 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6405 /* If standard_startfile_prefix is relative, base it on
6406 standard_exec_prefix. This lets us move the installed tree
6407 as a unit. If GCC_EXEC_PREFIX is defined, base
6408 standard_startfile_prefix on that as well.
6410 If the prefix is relative, only search it for native compilers;
6411 otherwise we will search a directory containing host libraries. */
6412 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
6413 add_sysrooted_prefix (&startfile_prefixes,
6414 standard_startfile_prefix, "BINUTILS",
6415 PREFIX_PRIORITY_LAST, 0, 1);
6416 else if (*cross_compile == '0')
6418 add_prefix (&startfile_prefixes,
6419 concat (gcc_exec_prefix
6420 ? gcc_exec_prefix : standard_exec_prefix,
6422 standard_startfile_prefix, NULL),
6423 NULL, PREFIX_PRIORITY_LAST, 0, 1);
6426 /* Sysrooted prefixes are relocated because target_system_root is
6427 also relocated by gcc_exec_prefix. */
6428 if (*standard_startfile_prefix_1)
6429 add_sysrooted_prefix (&startfile_prefixes,
6430 standard_startfile_prefix_1, "BINUTILS",
6431 PREFIX_PRIORITY_LAST, 0, 1);
6432 if (*standard_startfile_prefix_2)
6433 add_sysrooted_prefix (&startfile_prefixes,
6434 standard_startfile_prefix_2, "BINUTILS",
6435 PREFIX_PRIORITY_LAST, 0, 1);
6438 /* Process any user specified specs in the order given on the command
6440 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6442 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6444 read_specs (filename ? filename : uptr->filename, FALSE);
6447 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6448 if (gcc_exec_prefix)
6449 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6450 spec_version, dir_separator_str, NULL);
6452 /* Now we have the specs.
6453 Set the `valid' bits for switches that match anything in any spec. */
6455 validate_all_switches ();
6457 /* Now that we have the switches and the specs, set
6458 the subdirectory based on the options. */
6459 set_multilib_dir ();
6461 /* Set up to remember the pathname of gcc and any options
6462 needed for collect. We use argv[0] instead of progname because
6463 we need the complete pathname. */
6464 obstack_init (&collect_obstack);
6465 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6466 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6467 xputenv (XOBFINISH (&collect_obstack, char *));
6469 /* Set up to remember the pathname of the lto wrapper. */
6471 lto_wrapper_file = find_a_file (&exec_prefixes, "lto-wrapper", X_OK, false);
6472 if (lto_wrapper_file)
6474 lto_wrapper_spec = lto_wrapper_file;
6475 obstack_init (&collect_obstack);
6476 obstack_grow (&collect_obstack, "COLLECT_LTO_WRAPPER=",
6477 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
6478 obstack_grow (&collect_obstack, lto_wrapper_spec,
6479 strlen (lto_wrapper_spec) + 1);
6480 xputenv (XOBFINISH (&collect_obstack, char *));
6483 /* Warn about any switches that no pass was interested in. */
6485 for (i = 0; (int) i < n_switches; i++)
6486 if (! switches[i].validated)
6487 error ("unrecognized option %<-%s%>", switches[i].part1);
6489 /* Obey some of the options. */
6491 if (print_search_dirs)
6493 printf (_("install: %s%s\n"),
6494 gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
6495 gcc_exec_prefix ? "" : machine_suffix);
6496 printf (_("programs: %s\n"),
6497 build_search_list (&exec_prefixes, "", false, false));
6498 printf (_("libraries: %s\n"),
6499 build_search_list (&startfile_prefixes, "", false, true));
6503 if (print_file_name)
6505 printf ("%s\n", find_file (print_file_name));
6509 if (print_prog_name)
6511 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6512 printf ("%s\n", (newname ? newname : print_prog_name));
6516 if (print_multi_lib)
6518 print_multilib_info ();
6522 if (print_multi_directory)
6524 if (multilib_dir == NULL)
6527 printf ("%s\n", multilib_dir);
6531 if (print_multiarch)
6533 if (multiarch_dir == NULL)
6536 printf ("%s\n", multiarch_dir);
6542 if (target_system_root)
6544 if (target_sysroot_suffix)
6545 printf ("%s%s\n", target_system_root, target_sysroot_suffix);
6547 printf ("%s\n", target_system_root);
6552 if (print_multi_os_directory)
6554 if (multilib_os_dir == NULL)
6557 printf ("%s\n", multilib_os_dir);
6561 if (print_sysroot_headers_suffix)
6563 if (*sysroot_hdrs_suffix_spec)
6565 printf("%s\n", (target_sysroot_hdrs_suffix
6566 ? target_sysroot_hdrs_suffix
6571 /* The error status indicates that only one set of fixed
6572 headers should be built. */
6573 fatal_error ("not configured with sysroot headers suffix");
6576 if (print_help_list)
6582 printf (_("\nFor bug reporting instructions, please see:\n"));
6583 printf ("%s.\n", bug_report_url);
6588 /* We do not exit here. Instead we have created a fake input file
6589 called 'help-dummy' which needs to be compiled, and we pass this
6590 on the various sub-processes, along with the --help switch.
6591 Ensure their output appears after ours. */
6592 fputc ('\n', stdout);
6598 printf (_("%s %s%s\n"), progname, pkgversion_string,
6600 printf ("Copyright %s 2011 Free Software Foundation, Inc.\n",
6602 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
6603 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
6608 /* We do not exit here. We use the same mechanism of --help to print
6609 the version of the sub-processes. */
6610 fputc ('\n', stdout);
6619 fnotice (stderr, "Target: %s\n", spec_machine);
6620 fnotice (stderr, "Configured with: %s\n", configuration_arguments);
6622 #ifdef THREAD_MODEL_SPEC
6623 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6624 but there's no point in doing all this processing just to get
6625 thread_model back. */
6626 obstack_init (&obstack);
6627 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6628 obstack_1grow (&obstack, '\0');
6629 thrmod = XOBFINISH (&obstack, const char *);
6631 thrmod = thread_model;
6634 fnotice (stderr, "Thread model: %s\n", thrmod);
6636 /* compiler_version is truncated at the first space when initialized
6637 from version string, so truncate version_string at the first space
6638 before comparing. */
6639 for (n = 0; version_string[n]; n++)
6640 if (version_string[n] == ' ')
6643 if (! strncmp (version_string, compiler_version, n)
6644 && compiler_version[n] == 0)
6645 fnotice (stderr, "gcc version %s %s\n", version_string,
6648 fnotice (stderr, "gcc driver version %s %sexecuting gcc version %s\n",
6649 version_string, pkgversion_string, compiler_version);
6655 if (n_infiles == added_libraries)
6656 fatal_error ("no input files");
6661 /* Make a place to record the compiler output file names
6662 that correspond to the input files. */
6665 i += lang_specific_extra_outfiles;
6666 outfiles = XCNEWVEC (const char *, i);
6668 /* Record which files were specified explicitly as link input. */
6670 explicit_link_files = XCNEWVEC (char, n_infiles);
6672 combine_inputs = have_o || flag_wpa;
6674 for (i = 0; (int) i < n_infiles; i++)
6676 const char *name = infiles[i].name;
6677 struct compiler *compiler = lookup_compiler (name,
6679 infiles[i].language);
6681 if (compiler && !(compiler->combinable))
6682 combine_inputs = false;
6684 if (lang_n_infiles > 0 && compiler != input_file_compiler
6685 && infiles[i].language && infiles[i].language[0] != '*')
6686 infiles[i].incompiler = compiler;
6690 input_file_compiler = compiler;
6691 infiles[i].incompiler = compiler;
6695 /* Since there is no compiler for this input file, assume it is a
6697 explicit_link_files[i] = 1;
6698 infiles[i].incompiler = NULL;
6700 infiles[i].compiled = false;
6701 infiles[i].preprocessed = false;
6704 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1)
6705 fatal_error ("cannot specify -o with -c, -S or -E with multiple files");
6707 for (i = 0; (int) i < n_infiles; i++)
6709 int this_file_error = 0;
6711 /* Tell do_spec what to substitute for %i. */
6713 input_file_number = i;
6714 set_input (infiles[i].name);
6716 if (infiles[i].compiled)
6719 /* Use the same thing in %o, unless cp->spec says otherwise. */
6721 outfiles[i] = gcc_input_filename;
6723 /* Figure out which compiler from the file's suffix. */
6726 = lookup_compiler (infiles[i].name, input_filename_length,
6727 infiles[i].language);
6729 if (input_file_compiler)
6731 /* Ok, we found an applicable compiler. Run its spec. */
6733 if (input_file_compiler->spec[0] == '#')
6735 error ("%s: %s compiler not installed on this system",
6736 gcc_input_filename, &input_file_compiler->spec[1]);
6737 this_file_error = 1;
6743 if (debug_check_temp_file[0])
6744 free (debug_check_temp_file[0]);
6745 debug_check_temp_file[0] = NULL;
6747 if (debug_check_temp_file[1])
6748 free (debug_check_temp_file[1]);
6749 debug_check_temp_file[1] = NULL;
6752 value = do_spec (input_file_compiler->spec);
6753 infiles[i].compiled = true;
6755 this_file_error = 1;
6756 else if (compare_debug && debug_check_temp_file[0])
6759 inform (0, "recompiling with -fcompare-debug");
6761 compare_debug = -compare_debug;
6762 n_switches = n_switches_debug_check[1];
6763 n_switches_alloc = n_switches_alloc_debug_check[1];
6764 switches = switches_debug_check[1];
6766 value = do_spec (input_file_compiler->spec);
6768 compare_debug = -compare_debug;
6769 n_switches = n_switches_debug_check[0];
6770 n_switches_alloc = n_switches_alloc_debug_check[0];
6771 switches = switches_debug_check[0];
6775 error ("during -fcompare-debug recompilation");
6776 this_file_error = 1;
6779 gcc_assert (debug_check_temp_file[1]
6780 && strcmp (debug_check_temp_file[0],
6781 debug_check_temp_file[1]));
6784 inform (0, "comparing final insns dumps");
6786 if (compare_files (debug_check_temp_file))
6787 this_file_error = 1;
6792 if (debug_check_temp_file[0])
6793 free (debug_check_temp_file[0]);
6794 debug_check_temp_file[0] = NULL;
6796 if (debug_check_temp_file[1])
6797 free (debug_check_temp_file[1]);
6798 debug_check_temp_file[1] = NULL;
6803 /* If this file's name does not contain a recognized suffix,
6804 record it as explicit linker input. */
6807 explicit_link_files[i] = 1;
6809 /* Clear the delete-on-failure queue, deleting the files in it
6810 if this compilation failed. */
6812 if (this_file_error)
6814 delete_failure_queue ();
6817 /* If this compilation succeeded, don't delete those files later. */
6818 clear_failure_queue ();
6821 /* Reset the input file name to the first compile/object file name, for use
6822 with %b in LINK_SPEC. We use the first input file that we can find
6823 a compiler to compile it instead of using infiles.language since for
6824 languages other than C we use aliases that we then lookup later. */
6829 for (i = 0; i < n_infiles ; i++)
6830 if (infiles[i].incompiler
6831 || (infiles[i].language && infiles[i].language[0] != '*'))
6833 set_input (infiles[i].name);
6840 /* Make sure INPUT_FILE_NUMBER points to first available open
6842 input_file_number = n_infiles;
6843 if (lang_specific_pre_link ())
6847 /* Determine if there are any linker input files. */
6848 num_linker_inputs = 0;
6849 for (i = 0; (int) i < n_infiles; i++)
6850 if (explicit_link_files[i] || outfiles[i] != NULL)
6851 num_linker_inputs++;
6853 /* Run ld to link all the compiler output files. */
6855 if (num_linker_inputs > 0 && !seen_error () && print_subprocess_help < 2)
6857 int tmp = execution_count;
6858 #ifdef HAVE_LTO_PLUGIN
6859 const char *fno_use_linker_plugin = "fno-use-linker-plugin";
6861 const char *fuse_linker_plugin = "fuse-linker-plugin";
6864 /* We'll use ld if we can't find collect2. */
6865 if (! strcmp (linker_name_spec, "collect2"))
6867 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false);
6869 linker_name_spec = "ld";
6872 #ifdef HAVE_LTO_PLUGIN
6873 if (!switch_matches (fno_use_linker_plugin,
6874 fno_use_linker_plugin + strlen (fno_use_linker_plugin), 0))
6876 if (switch_matches (fuse_linker_plugin,
6877 fuse_linker_plugin + strlen (fuse_linker_plugin), 0))
6880 linker_plugin_file_spec = find_a_file (&exec_prefixes,
6881 LTOPLUGINSONAME, R_OK,
6883 if (!linker_plugin_file_spec)
6884 fatal_error ("-fuse-linker-plugin, but " LTOPLUGINSONAME " not found");
6886 lto_gcc_spec = argv[0];
6888 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6890 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false);
6891 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true);
6893 if (print_subprocess_help == 1)
6895 printf (_("\nLinker options\n==============\n\n"));
6896 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
6897 " to the linker.\n\n"));
6900 value = do_spec (link_command_spec);
6903 linker_was_run = (tmp != execution_count);
6906 /* If options said don't run linker,
6907 complain about input files to be given to the linker. */
6909 if (! linker_was_run && !seen_error ())
6910 for (i = 0; (int) i < n_infiles; i++)
6911 if (explicit_link_files[i]
6912 && !(infiles[i].language && infiles[i].language[0] == '*'))
6913 warning (0, "%s: linker input file unused because linking not done",
6916 /* Delete some or all of the temporary files we made. */
6919 delete_failure_queue ();
6920 delete_temp_files ();
6922 if (print_help_list)
6924 printf (("\nFor bug reporting instructions, please see:\n"));
6925 printf ("%s\n", bug_report_url);
6929 return (signal_count != 0 ? 2
6930 : seen_error () ? (pass_exit_codes ? greatest_status : 1)
6934 /* Find the proper compilation spec for the file name NAME,
6935 whose length is LENGTH. LANGUAGE is the specified language,
6936 or 0 if this file is to be passed to the linker. */
6938 static struct compiler *
6939 lookup_compiler (const char *name, size_t length, const char *language)
6941 struct compiler *cp;
6943 /* If this was specified by the user to be a linker input, indicate that. */
6944 if (language != 0 && language[0] == '*')
6947 /* Otherwise, look for the language, if one is spec'd. */
6950 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6951 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6954 error ("language %s not recognized", language);
6958 /* Look for a suffix. */
6959 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6961 if (/* The suffix `-' matches only the file name `-'. */
6962 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6963 || (strlen (cp->suffix) < length
6964 /* See if the suffix matches the end of NAME. */
6965 && !strcmp (cp->suffix,
6966 name + length - strlen (cp->suffix))
6971 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6972 /* Look again, but case-insensitively this time. */
6974 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6976 if (/* The suffix `-' matches only the file name `-'. */
6977 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6978 || (strlen (cp->suffix) < length
6979 /* See if the suffix matches the end of NAME. */
6980 && ((!strcmp (cp->suffix,
6981 name + length - strlen (cp->suffix))
6982 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6983 && !strcasecmp (cp->suffix,
6984 name + length - strlen (cp->suffix)))
6990 if (cp >= compilers)
6992 if (cp->spec[0] != '@')
6993 /* A non-alias entry: return it. */
6996 /* An alias entry maps a suffix to a language.
6997 Search for the language; pass 0 for NAME and LENGTH
6998 to avoid infinite recursion if language not found. */
6999 return lookup_compiler (NULL, 0, cp->spec + 1);
7005 save_string (const char *s, int len)
7007 char *result = XNEWVEC (char, len + 1);
7009 memcpy (result, s, len);
7015 pfatal_with_name (const char *name)
7017 perror_with_name (name);
7018 delete_temp_files ();
7023 perror_with_name (const char *name)
7025 error ("%s: %m", name);
7029 validate_switches_from_spec (const char *spec)
7031 const char *p = spec;
7034 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
7035 /* We have a switch spec. */
7036 p = validate_switches (p + 1);
7040 validate_all_switches (void)
7042 struct compiler *comp;
7043 struct spec_list *spec;
7045 for (comp = compilers; comp->spec; comp++)
7046 validate_switches_from_spec (comp->spec);
7048 /* Look through the linked list of specs read from the specs file. */
7049 for (spec = specs; spec; spec = spec->next)
7050 validate_switches_from_spec (*spec->ptr_spec);
7052 validate_switches_from_spec (link_command_spec);
7055 /* Look at the switch-name that comes after START
7056 and mark as valid all supplied switches that match it. */
7059 validate_switches (const char *start)
7061 const char *p = start;
7065 bool suffix = false;
7066 bool starred = false;
7068 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7077 if (*p == '.' || *p == ',')
7081 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
7082 || *p == ',' || *p == '.' || *p == '@')
7087 starred = true, p++;
7093 /* Mark all matching switches as valid. */
7094 for (i = 0; i < n_switches; i++)
7095 if (!strncmp (switches[i].part1, atom, len)
7096 && (starred || switches[i].part1[len] == 0))
7097 switches[i].validated = 1;
7101 if (*p && (p[-1] == '|' || p[-1] == '&'))
7104 if (*p && p[-1] == ':')
7106 while (*p && *p != ';' && *p != '}')
7111 if (*p == '{' || *p == '<')
7112 p = validate_switches (p+1);
7113 else if (p[0] == 'W' && p[1] == '{')
7114 p = validate_switches (p+2);
7121 if (*p && p[-1] == ';')
7135 static struct mdswitchstr *mdswitches;
7136 static int n_mdswitches;
7138 /* Check whether a particular argument was used. The first time we
7139 canonicalize the switches to keep only the ones we care about. */
7142 used_arg (const char *p, int len)
7147 const char *replace;
7152 static struct mswitchstr *mswitches;
7153 static int n_mswitches;
7158 struct mswitchstr *matches;
7162 /* Break multilib_matches into the component strings of string
7163 and replacement string. */
7164 for (q = multilib_matches; *q != '\0'; q++)
7169 = (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
7171 q = multilib_matches;
7180 fatal_error ("multilib spec %qs is invalid",
7185 matches[i].len = q - matches[i].str;
7187 matches[i].replace = ++q;
7188 while (*q != ';' && *q != '\0')
7191 goto invalid_matches;
7194 matches[i].rep_len = q - matches[i].replace;
7200 /* Now build a list of the replacement string for switches that we care
7201 about. Make sure we allocate at least one entry. This prevents
7202 xmalloc from calling fatal, and prevents us from re-executing this
7205 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1));
7206 for (i = 0; i < n_switches; i++)
7207 if ((switches[i].live_cond & SWITCH_IGNORE) == 0)
7209 int xlen = strlen (switches[i].part1);
7210 for (j = 0; j < cnt; j++)
7211 if (xlen == matches[j].len
7212 && ! strncmp (switches[i].part1, matches[j].str, xlen))
7214 mswitches[n_mswitches].str = matches[j].replace;
7215 mswitches[n_mswitches].len = matches[j].rep_len;
7216 mswitches[n_mswitches].replace = (char *) 0;
7217 mswitches[n_mswitches].rep_len = 0;
7223 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7224 on the command line nor any options mutually incompatible with
7226 for (i = 0; i < n_mdswitches; i++)
7230 for (q = multilib_options; *q != '\0'; q++)
7236 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
7237 || strchr (" /", q[mdswitches[i].len]) == NULL)
7239 while (*q != ' ' && *q != '/' && *q != '\0')
7246 if (*q != ' ' && *q != '\0')
7248 while (*r != ' ' && *r != '\0')
7251 while (*q != ' ' && *q != '/' && *q != '\0')
7254 if (used_arg (r, q - r))
7259 mswitches[n_mswitches].str = mdswitches[i].str;
7260 mswitches[n_mswitches].len = mdswitches[i].len;
7261 mswitches[n_mswitches].replace = (char *) 0;
7262 mswitches[n_mswitches].rep_len = 0;
7275 for (i = 0; i < n_mswitches; i++)
7276 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
7283 default_arg (const char *p, int len)
7287 for (i = 0; i < n_mdswitches; i++)
7288 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
7294 /* Work out the subdirectory to use based on the options. The format of
7295 multilib_select is a list of elements. Each element is a subdirectory
7296 name followed by a list of options followed by a semicolon. The format
7297 of multilib_exclusions is the same, but without the preceding
7298 directory. First gcc will check the exclusions, if none of the options
7299 beginning with an exclamation point are present, and all of the other
7300 options are present, then we will ignore this completely. Passing
7301 that, gcc will consider each multilib_select in turn using the same
7302 rules for matching the options. If a match is found, that subdirectory
7304 A subdirectory name is optionally followed by a colon and the corresponding
7308 set_multilib_dir (void)
7311 unsigned int this_path_len;
7312 const char *this_path, *this_arg;
7313 const char *start, *end;
7315 int ok, ndfltok, first;
7318 start = multilib_defaults;
7319 while (*start == ' ' || *start == '\t')
7321 while (*start != '\0')
7324 while (*start != ' ' && *start != '\t' && *start != '\0')
7326 while (*start == ' ' || *start == '\t')
7334 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches);
7335 for (start = multilib_defaults; *start != '\0'; start = end + 1)
7337 while (*start == ' ' || *start == '\t')
7343 for (end = start + 1;
7344 *end != ' ' && *end != '\t' && *end != '\0'; end++)
7347 obstack_grow (&multilib_obstack, start, end - start);
7348 obstack_1grow (&multilib_obstack, 0);
7349 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *);
7350 mdswitches[i++].len = end - start;
7357 p = multilib_exclusions;
7360 /* Ignore newlines. */
7367 /* Check the arguments. */
7374 fatal_error ("multilib exclusions %qs is invalid",
7375 multilib_exclusions);
7385 while (*p != ' ' && *p != ';')
7388 goto invalid_exclusions;
7392 if (*this_arg != '!')
7400 ok = used_arg (this_arg, p - this_arg);
7415 p = multilib_select;
7418 /* Ignore newlines. */
7425 /* Get the initial path. */
7432 fatal_error ("multilib select %qs is invalid",
7437 this_path_len = p - this_path;
7439 /* Check the arguments. */
7446 goto invalid_select;
7455 while (*p != ' ' && *p != ';')
7458 goto invalid_select;
7462 if (*this_arg != '!')
7470 /* If this is a default argument, we can just ignore it.
7471 This is true even if this_arg begins with '!'. Beginning
7472 with '!' does not mean that this argument is necessarily
7473 inappropriate for this library: it merely means that
7474 there is a more specific library which uses this
7475 argument. If this argument is a default, we need not
7476 consider that more specific library. */
7477 ok = used_arg (this_arg, p - this_arg);
7484 if (default_arg (this_arg, p - this_arg))
7493 if (this_path_len != 1
7494 || this_path[0] != '.')
7496 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1);
7499 strncpy (new_multilib_dir, this_path, this_path_len);
7500 new_multilib_dir[this_path_len] = '\0';
7501 q = strchr (new_multilib_dir, ':');
7504 multilib_dir = new_multilib_dir;
7511 const char *q = this_path, *end = this_path + this_path_len;
7513 while (q < end && *q != ':')
7517 const char *q2 = q + 1, *ml_end = end;
7518 char *new_multilib_os_dir;
7520 while (q2 < end && *q2 != ':')
7524 new_multilib_os_dir = XNEWVEC (char, ml_end - q);
7525 memcpy (new_multilib_os_dir, q + 1, ml_end - q - 1);
7526 new_multilib_os_dir[ml_end - q - 1] = '\0';
7527 multilib_os_dir = *new_multilib_os_dir ? new_multilib_os_dir : ".";
7529 if (q2 < end && *q2 == ':')
7531 char *new_multiarch_dir = XNEWVEC (char, end - q2);
7532 memcpy (new_multiarch_dir, q2 + 1, end - q2 - 1);
7533 new_multiarch_dir[end - q2 - 1] = '\0';
7534 multiarch_dir = new_multiarch_dir;
7543 if (multilib_dir == NULL && multilib_os_dir != NULL
7544 && strcmp (multilib_os_dir, ".") == 0)
7546 free (CONST_CAST (char *, multilib_os_dir));
7547 multilib_os_dir = NULL;
7549 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7550 multilib_os_dir = multilib_dir;
7553 /* Print out the multiple library subdirectory selection
7554 information. This prints out a series of lines. Each line looks
7555 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7556 required. Only the desired options are printed out, the negative
7557 matches. The options are print without a leading dash. There are
7558 no spaces to make it easy to use the information in the shell.
7559 Each subdirectory is printed only once. This assumes the ordering
7560 generated by the genmultilib script. Also, we leave out ones that match
7564 print_multilib_info (void)
7566 const char *p = multilib_select;
7567 const char *last_path = 0, *this_path;
7569 unsigned int last_path_len = 0;
7574 /* Ignore newlines. */
7581 /* Get the initial path. */
7588 fatal_error ("multilib select %qs is invalid", multilib_select);
7594 /* When --disable-multilib was used but target defines
7595 MULTILIB_OSDIRNAMES, entries starting with .: (and not starting
7596 with .:: for multiarch configurations) are there just to find
7597 multilib_os_dir, so skip them from output. */
7598 if (this_path[0] == '.' && this_path[1] == ':' && this_path[2] != ':')
7601 /* Check for matches with the multilib_exclusions. We don't bother
7602 with the '!' in either list. If any of the exclusion rules match
7603 all of its options with the select rule, we skip it. */
7605 const char *e = multilib_exclusions;
7606 const char *this_arg;
7611 /* Ignore newlines. */
7618 /* Check the arguments. */
7627 fatal_error ("multilib exclusion %qs is invalid",
7628 multilib_exclusions);
7639 while (*e != ' ' && *e != ';')
7642 goto invalid_exclusion;
7650 int len = e - this_arg;
7653 goto invalid_select;
7657 while (*q != ' ' && *q != ';')
7660 goto invalid_select;
7664 if (! strncmp (arg, this_arg,
7665 (len < q - arg) ? q - arg : len)
7666 || default_arg (this_arg, e - this_arg))
7696 /* If this is a duplicate, skip it. */
7697 skip = (last_path != 0
7698 && (unsigned int) (p - this_path) == last_path_len
7699 && ! strncmp (last_path, this_path, last_path_len));
7701 last_path = this_path;
7702 last_path_len = p - this_path;
7705 /* If this directory requires any default arguments, we can skip
7706 it. We will already have printed a directory identical to
7707 this one which does not require that default argument. */
7718 goto invalid_select;
7725 while (*q != ' ' && *q != ';')
7728 goto invalid_select;
7733 && default_arg (arg, q - arg))
7748 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7759 goto invalid_select;
7767 use_arg = *p != '!';
7772 while (*p != ' ' && *p != ';')
7775 goto invalid_select;
7787 /* If there are extra options, print them now. */
7788 if (multilib_extra && *multilib_extra)
7790 int print_at = TRUE;
7793 for (q = multilib_extra; *q != '\0'; q++)
7814 /* getenv built-in spec function.
7816 Returns the value of the environment variable given by its first
7817 argument, concatenated with the second argument. If the
7818 environment variable is not defined, a fatal error is issued. */
7821 getenv_spec_function (int argc, const char **argv)
7831 value = getenv (argv[0]);
7833 fatal_error ("environment variable %qs not defined", argv[0]);
7835 /* We have to escape every character of the environment variable so
7836 they are not interpreted as active spec characters. A
7837 particularly painful case is when we are reading a variable
7838 holding a windows path complete with \ separators. */
7839 len = strlen (value) * 2 + strlen (argv[1]) + 1;
7840 result = XNEWVAR (char, len);
7841 for (ptr = result; *value; ptr += 2)
7847 strcpy (ptr, argv[1]);
7852 /* if-exists built-in spec function.
7854 Checks to see if the file specified by the absolute pathname in
7855 ARGS exists. Returns that pathname if found.
7857 The usual use for this function is to check for a library file
7858 (whose name has been expanded with %s). */
7861 if_exists_spec_function (int argc, const char **argv)
7863 /* Must have only one argument. */
7864 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7870 /* if-exists-else built-in spec function.
7872 This is like if-exists, but takes an additional argument which
7873 is returned if the first argument does not exist. */
7876 if_exists_else_spec_function (int argc, const char **argv)
7878 /* Must have exactly two arguments. */
7882 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7888 /* replace-outfile built-in spec function.
7890 This looks for the first argument in the outfiles array's name and
7891 replaces it with the second argument. */
7894 replace_outfile_spec_function (int argc, const char **argv)
7897 /* Must have exactly two arguments. */
7901 for (i = 0; i < n_infiles; i++)
7903 if (outfiles[i] && !strcmp (outfiles[i], argv[0]))
7904 outfiles[i] = xstrdup (argv[1]);
7909 /* remove-outfile built-in spec function.
7911 * This looks for the first argument in the outfiles array's name and
7915 remove_outfile_spec_function (int argc, const char **argv)
7918 /* Must have exactly one argument. */
7922 for (i = 0; i < n_infiles; i++)
7924 if (outfiles[i] && !strcmp (outfiles[i], argv[0]))
7930 /* Given two version numbers, compares the two numbers.
7931 A version number must match the regular expression
7932 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
7935 compare_version_strings (const char *v1, const char *v2)
7940 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
7941 REG_EXTENDED | REG_NOSUB) != 0)
7943 rresult = regexec (&r, v1, 0, NULL, 0);
7944 if (rresult == REG_NOMATCH)
7945 fatal_error ("invalid version number %qs", v1);
7946 else if (rresult != 0)
7948 rresult = regexec (&r, v2, 0, NULL, 0);
7949 if (rresult == REG_NOMATCH)
7950 fatal_error ("invalid version number %qs", v2);
7951 else if (rresult != 0)
7954 return strverscmp (v1, v2);
7958 /* version_compare built-in spec function.
7960 This takes an argument of the following form:
7962 <comparison-op> <arg1> [<arg2>] <switch> <result>
7964 and produces "result" if the comparison evaluates to true,
7965 and nothing if it doesn't.
7967 The supported <comparison-op> values are:
7969 >= true if switch is a later (or same) version than arg1
7971 < true if switch is an earlier version than arg1
7973 >< true if switch is arg1 or later, and earlier than arg2
7974 <> true if switch is earlier than arg1 or is arg2 or later
7976 If the switch is not present, the condition is false unless
7977 the first character of the <comparison-op> is '!'.
7980 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
7981 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
7984 version_compare_spec_function (int argc, const char **argv)
7988 const char *switch_value = NULL;
7993 fatal_error ("too few arguments to %%:version-compare");
7994 if (argv[0][0] == '\0')
7996 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!')
7998 if (argc != nargs + 3)
7999 fatal_error ("too many arguments to %%:version-compare");
8001 switch_len = strlen (argv[nargs + 1]);
8002 for (i = 0; i < n_switches; i++)
8003 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len)
8004 && check_live_switch (i, switch_len))
8005 switch_value = switches[i].part1 + switch_len;
8007 if (switch_value == NULL)
8011 comp1 = compare_version_strings (switch_value, argv[1]);
8013 comp2 = compare_version_strings (switch_value, argv[2]);
8015 comp2 = -1; /* This value unused. */
8018 switch (argv[0][0] << 8 | argv[0][1])
8020 case '>' << 8 | '=':
8021 result = comp1 >= 0;
8023 case '!' << 8 | '<':
8024 result = comp1 >= 0 || switch_value == NULL;
8029 case '!' << 8 | '>':
8030 result = comp1 < 0 || switch_value == NULL;
8032 case '>' << 8 | '<':
8033 result = comp1 >= 0 && comp2 < 0;
8035 case '<' << 8 | '>':
8036 result = comp1 < 0 || comp2 >= 0;
8040 fatal_error ("unknown operator %qs in %%:version-compare", argv[0]);
8045 return argv[nargs + 2];
8048 /* %:include builtin spec function. This differs from %include in that it
8049 can be nested inside a spec, and thus be conditionalized. It takes
8050 one argument, the filename, and looks for it in the startfile path.
8051 The result is always NULL, i.e. an empty expansion. */
8054 include_spec_function (int argc, const char **argv)
8061 file = find_a_file (&startfile_prefixes, argv[0], R_OK, true);
8062 read_specs (file ? file : argv[0], FALSE);
8067 /* %:find-file spec function. This function replaces its argument by
8068 the file found thru find_file, that is the -print-file-name gcc
8071 find_file_spec_function (int argc, const char **argv)
8078 file = find_file (argv[0]);
8083 /* %:find-plugindir spec function. This function replaces its argument
8084 by the -iplugindir=<dir> option. `dir' is found thru find_file, that
8085 is the -print-file-name gcc program option. */
8087 find_plugindir_spec_function (int argc, const char **argv ATTRIBUTE_UNUSED)
8094 option = concat ("-iplugindir=", find_file ("plugin"), NULL);
8099 /* %:print-asm-header spec function. Print a banner to say that the
8100 following output is from the assembler. */
8103 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED,
8104 const char **argv ATTRIBUTE_UNUSED)
8106 printf (_("Assembler options\n=================\n\n"));
8107 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
8112 /* Compute a timestamp to initialize flag_random_seed. */
8115 get_local_tick (void)
8119 /* Get some more or less random data. */
8120 #ifdef HAVE_GETTIMEOFDAY
8124 gettimeofday (&tv, NULL);
8125 ret = tv.tv_sec * 1000 + tv.tv_usec / 1000;
8129 time_t now = time (NULL);
8131 if (now != (time_t)-1)
8132 ret = (unsigned) now;
8139 /* %:compare-debug-dump-opt spec function. Save the last argument,
8140 expected to be the last -fdump-final-insns option, or generate a
8144 compare_debug_dump_opt_spec_function (int arg,
8145 const char **argv ATTRIBUTE_UNUSED)
8150 static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3];
8153 fatal_error ("too many arguments to %%:compare-debug-dump-opt");
8155 do_spec_2 ("%{fdump-final-insns=*:%*}");
8156 do_spec_1 (" ", 0, NULL);
8158 if (VEC_length (const_char_p, argbuf) > 0
8159 && strcmp (argv[VEC_length (const_char_p, argbuf) - 1], "."))
8164 name = xstrdup (argv[VEC_length (const_char_p, argbuf) - 1]);
8169 const char *ext = NULL;
8171 if (VEC_length (const_char_p, argbuf) > 0)
8173 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
8176 else if (!compare_debug)
8179 do_spec_2 ("%g.gkd");
8181 do_spec_1 (" ", 0, NULL);
8183 gcc_assert (VEC_length (const_char_p, argbuf) > 0);
8185 name = concat (VEC_last (const_char_p, argbuf), ext, NULL);
8187 ret = concat ("-fdump-final-insns=", name, NULL);
8190 which = compare_debug < 0;
8191 debug_check_temp_file[which] = name;
8195 unsigned HOST_WIDE_INT value = get_local_tick () ^ getpid ();
8197 sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value);
8201 ret = concat ("%{!frandom-seed=*:-frandom-seed=", random_seed, "} ",
8210 static const char *debug_auxbase_opt;
8212 /* %:compare-debug-self-opt spec function. Expands to the options
8213 that are to be passed in the second compilation of
8217 compare_debug_self_opt_spec_function (int arg,
8218 const char **argv ATTRIBUTE_UNUSED)
8221 fatal_error ("too many arguments to %%:compare-debug-self-opt");
8223 if (compare_debug >= 0)
8226 do_spec_2 ("%{c|S:%{o*:%*}}");
8227 do_spec_1 (" ", 0, NULL);
8229 if (VEC_length (const_char_p, argbuf) > 0)
8230 debug_auxbase_opt = concat ("-auxbase-strip ",
8231 VEC_last (const_char_p, argbuf),
8234 debug_auxbase_opt = NULL;
8237 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
8238 %<fdump-final-insns=* -w -S -o %j \
8239 %{!fcompare-debug-second:-fcompare-debug-second} \
8240 ", compare_debug_opt, NULL);
8243 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
8244 options that are to be passed in the second compilation of
8245 compare-debug. It expects, as an argument, the basename of the
8246 current input file name, with the .gk suffix appended to it. */
8249 compare_debug_auxbase_opt_spec_function (int arg,
8256 fatal_error ("too few arguments to %%:compare-debug-auxbase-opt");
8259 fatal_error ("too many arguments to %%:compare-debug-auxbase-opt");
8261 if (compare_debug >= 0)
8264 len = strlen (argv[0]);
8265 if (len < 3 || strcmp (argv[0] + len - 3, ".gk") != 0)
8266 fatal_error ("argument to %%:compare-debug-auxbase-opt "
8267 "does not end in .gk");
8269 if (debug_auxbase_opt)
8270 return debug_auxbase_opt;
8272 #define OPT "-auxbase "
8275 name = (char*) xmalloc (sizeof (OPT) + len);
8276 memcpy (name, OPT, sizeof (OPT) - 1);
8277 memcpy (name + sizeof (OPT) - 1, argv[0], len);
8278 name[sizeof (OPT) - 1 + len] = '\0';
8285 /* %:pass-through-libs spec function. Finds all -l options and input
8286 file names in the lib spec passed to it, and makes a list of them
8287 prepended with the plugin option to cause them to be passed through
8288 to the final link after all the new object files have been added. */
8291 pass_through_libs_spec_func (int argc, const char **argv)
8293 char *prepended = xstrdup (" ");
8295 /* Shlemiel the painter's algorithm. Innately horrible, but at least
8296 we know that there will never be more than a handful of strings to
8297 concat, and it's only once per run, so it's not worth optimising. */
8298 for (n = 0; n < argc; n++)
8300 char *old = prepended;
8301 /* Anything that isn't an option is a full path to an output
8302 file; pass it through if it ends in '.a'. Among options,
8304 if (argv[n][0] == '-' && argv[n][1] == 'l')
8306 const char *lopt = argv[n] + 2;
8307 /* Handle both joined and non-joined -l options. If for any
8308 reason there's a trailing -l with no joined or following
8309 arg just discard it. */
8310 if (!*lopt && ++n >= argc)
8314 prepended = concat (prepended, "-plugin-opt=-pass-through=-l",
8317 else if (!strcmp (".a", argv[n] + strlen (argv[n]) - 2))
8319 prepended = concat (prepended, "-plugin-opt=-pass-through=",
8320 argv[n], " ", NULL);
8322 if (prepended != old)