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} "
625 /* -u* was put back because both BSD and SysV seem to support it. */
626 /* %{static:} simply prevents an error message if the target machine
627 doesn't handle -static. */
628 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
629 scripts which exist in user specified directories, or in standard
631 /* We pass any -flto flags on to the linker, which is expected
632 to understand them. In practice, this means it had better be collect2. */
633 #ifndef LINK_COMMAND_SPEC
634 #define LINK_COMMAND_SPEC "\
635 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
637 %{fuse-linker-plugin: \
638 -plugin %(linker_plugin_file) \
639 -plugin-opt=%(lto_wrapper) \
640 -plugin-opt=-fresolution=%u.res \
641 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
643 %{flto*:%<fcompare-debug*} \
644 %{flto*} %l " LINK_PIE_SPEC \
645 "%X %{o*} %{e*} %{N} %{n} %{r}\
646 %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}}\
647 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
648 %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
649 %(mflib) " STACK_SPLIT_SPEC "\
650 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov}\
651 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
652 %{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}"
655 #ifndef LINK_LIBGCC_SPEC
656 /* Generate -L options for startfile prefix list. */
657 # define LINK_LIBGCC_SPEC "%D"
660 #ifndef STARTFILE_PREFIX_SPEC
661 # define STARTFILE_PREFIX_SPEC ""
665 # define SYSROOT_SPEC "--sysroot=%R"
668 #ifndef SYSROOT_SUFFIX_SPEC
669 # define SYSROOT_SUFFIX_SPEC ""
672 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
673 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
676 static const char *asm_debug;
677 static const char *cpp_spec = CPP_SPEC;
678 static const char *cc1_spec = CC1_SPEC;
679 static const char *cc1plus_spec = CC1PLUS_SPEC;
680 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
681 static const char *link_ssp_spec = LINK_SSP_SPEC;
682 static const char *asm_spec = ASM_SPEC;
683 static const char *asm_final_spec = ASM_FINAL_SPEC;
684 static const char *link_spec = LINK_SPEC;
685 static const char *lib_spec = LIB_SPEC;
686 static const char *mfwrap_spec = MFWRAP_SPEC;
687 static const char *mflib_spec = MFLIB_SPEC;
688 static const char *link_gomp_spec = "";
689 static const char *libgcc_spec = LIBGCC_SPEC;
690 static const char *endfile_spec = ENDFILE_SPEC;
691 static const char *startfile_spec = STARTFILE_SPEC;
692 static const char *linker_name_spec = LINKER_NAME;
693 static const char *linker_plugin_file_spec = "";
694 static const char *lto_wrapper_spec = "";
695 static const char *lto_gcc_spec = "";
696 static const char *link_command_spec = LINK_COMMAND_SPEC;
697 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
698 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
699 static const char *sysroot_spec = SYSROOT_SPEC;
700 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
701 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
703 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
704 There should be no need to override these in target dependent files,
705 but we need to copy them to the specs file so that newer versions
706 of the GCC driver can correctly drive older tool chains with the
707 appropriate -B options. */
709 /* When cpplib handles traditional preprocessing, get rid of this, and
710 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
711 that we default the front end language better. */
712 static const char *trad_capable_cpp =
713 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}";
715 /* We don't wrap .d files in %W{} since a missing .d file, and
716 therefore no dependency entry, confuses make into thinking a .o
717 file that happens to exist is up-to-date. */
718 static const char *cpp_unique_options =
719 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
720 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
721 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
722 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
723 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
724 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
725 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
726 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
727 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
728 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
731 /* This contains cpp options which are common with cc1_options and are passed
732 only when preprocessing only to avoid duplication. We pass the cc1 spec
733 options to the preprocessor so that it the cc1 spec may manipulate
734 options used to set target flags. Those special target flags settings may
735 in turn cause preprocessor symbols to be defined specially. */
736 static const char *cpp_options =
737 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
738 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
739 %{undef} %{save-temps*:-fpch-preprocess}";
741 /* This contains cpp options which are not passed when the preprocessor
742 output will be used by another program. */
743 static const char *cpp_debug_options = "%{d*}";
745 /* NB: This is shared amongst all front-ends, except for Ada. */
746 static const char *cc1_options =
747 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
748 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
749 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
750 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
751 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
752 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
753 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
754 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\
755 %{-target-help:--target-help}\
756 %{-version:--version}\
757 %{-help=*:--help=%*}\
758 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
759 %{fsyntax-only:-o %j} %{-param*}\
760 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\
761 %{coverage:-fprofile-arcs -ftest-coverage}";
763 static const char *asm_options =
764 "%{--target-help:%:print-asm-header()} "
766 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
767 to the assembler equivalents. */
768 "%{v} %{w:-W} %{I*} "
770 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
772 static const char *invoke_as =
773 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
775 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
776 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
780 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
781 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
785 /* Some compilers have limits on line lengths, and the multilib_select
786 and/or multilib_matches strings can be very long, so we build them at
788 static struct obstack multilib_obstack;
789 static const char *multilib_select;
790 static const char *multilib_matches;
791 static const char *multilib_defaults;
792 static const char *multilib_exclusions;
794 /* Check whether a particular argument is a default argument. */
796 #ifndef MULTILIB_DEFAULTS
797 #define MULTILIB_DEFAULTS { "" }
800 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
802 #ifndef DRIVER_SELF_SPECS
803 #define DRIVER_SELF_SPECS ""
806 /* Adding -fopenmp should imply pthreads. This is particularly important
807 for targets that use different start files and suchlike. */
808 #ifndef GOMP_SELF_SPECS
809 #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}"
812 static const char *const driver_self_specs[] = {
813 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
814 DRIVER_SELF_SPECS, CONFIGURE_SPECS, GOMP_SELF_SPECS
817 #ifndef OPTION_DEFAULT_SPECS
818 #define OPTION_DEFAULT_SPECS { "", "" }
827 static const struct default_spec
828 option_default_specs[] = { OPTION_DEFAULT_SPECS };
832 struct user_specs *next;
833 const char *filename;
836 static struct user_specs *user_specs_head, *user_specs_tail;
839 /* Record the mapping from file suffixes for compilation specs. */
843 const char *suffix; /* Use this compiler for input files
844 whose names end in this suffix. */
846 const char *spec; /* To use this compiler, run this spec. */
848 const char *cpp_spec; /* If non-NULL, substitute this spec
849 for `%C', rather than the usual
851 const int combinable; /* If nonzero, compiler can deal with
852 multiple source files at once (IMA). */
853 const int needs_preprocessing; /* If nonzero, source files need to
854 be run through a preprocessor. */
857 /* Pointer to a vector of `struct compiler' that gives the spec for
858 compiling a file, based on its suffix.
859 A file that does not end in any of these suffixes will be passed
860 unchanged to the loader and nothing else will be done to it.
862 An entry containing two 0s is used to terminate the vector.
864 If multiple entries match a file, the last matching one is used. */
866 static struct compiler *compilers;
868 /* Number of entries in `compilers', not counting the null terminator. */
870 static int n_compilers;
872 /* The default list of file name suffixes and their compilation specs. */
874 static const struct compiler default_compilers[] =
876 /* Add lists of suffixes of known languages here. If those languages
877 were not present when we built the driver, we will hit these copies
878 and be given a more meaningful error than "file not used since
879 linking is not done". */
880 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
881 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
882 {".mii", "#Objective-C++", 0, 0, 0},
883 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
884 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
885 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
886 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
887 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
888 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
889 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
890 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
891 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
892 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
893 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
894 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
895 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
896 {".r", "#Ratfor", 0, 0, 0},
897 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
898 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
899 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
900 {".go", "#Go", 0, 1, 0},
901 /* Next come the entries for C. */
902 {".c", "@c", 0, 0, 1},
904 /* cc1 has an integrated ISO C preprocessor. We should invoke the
905 external preprocessor if -save-temps is given. */
906 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
909 %eGNU C no longer supports -traditional without -E}\
910 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
911 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
912 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
914 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
915 cc1 %(cpp_unique_options) %(cc1_options)}}}\
916 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
918 "%{!E:%e-E or -x required when input is from standard input}\
919 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
920 {".h", "@c-header", 0, 0, 0},
922 /* cc1 has an integrated ISO C preprocessor. We should invoke the
923 external preprocessor if -save-temps is given. */
924 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
926 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
927 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
928 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
930 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
931 %W{o*:--output-pch=%*}}%V}\
932 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
933 cc1 %(cpp_unique_options) %(cc1_options)\
934 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
935 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
936 {".i", "@cpp-output", 0, 0, 0},
938 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 1, 0},
939 {".s", "@assembler", 0, 0, 0},
941 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
942 {".sx", "@assembler-with-cpp", 0, 0, 0},
943 {".S", "@assembler-with-cpp", 0, 0, 0},
944 {"@assembler-with-cpp",
945 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
946 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
947 %{E|M|MM:%(cpp_debug_options)}\
948 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
949 as %(asm_debug) %(asm_options) %|.s %A }}}}"
951 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
952 %{E|M|MM:%(cpp_debug_options)}\
953 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
954 as %(asm_debug) %(asm_options) %m.s %A }}}}"
959 /* Mark end of table. */
963 /* Number of elements in default_compilers, not counting the terminator. */
965 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
967 typedef char *char_p; /* For DEF_VEC_P. */
969 DEF_VEC_ALLOC_P(char_p,heap);
971 /* A vector of options to give to the linker.
972 These options are accumulated by %x,
973 and substituted into the linker command with %X. */
974 static VEC(char_p,heap) *linker_options;
976 /* A vector of options to give to the assembler.
977 These options are accumulated by -Wa,
978 and substituted into the assembler command with %Y. */
979 static VEC(char_p,heap) *assembler_options;
981 /* A vector of options to give to the preprocessor.
982 These options are accumulated by -Wp,
983 and substituted into the preprocessor command with %Z. */
984 static VEC(char_p,heap) *preprocessor_options;
987 skip_whitespace (char *p)
991 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
992 be considered whitespace. */
993 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
995 else if (*p == '\n' || *p == ' ' || *p == '\t')
1009 /* Structures to keep track of prefixes to try when looking for files. */
1013 const char *prefix; /* String to prepend to the path. */
1014 struct prefix_list *next; /* Next in linked list. */
1015 int require_machine_suffix; /* Don't use without machine_suffix. */
1016 /* 2 means try both machine_suffix and just_machine_suffix. */
1017 int priority; /* Sort key - priority within list. */
1018 int os_multilib; /* 1 if OS multilib scheme should be used,
1019 0 for GCC multilib scheme. */
1024 struct prefix_list *plist; /* List of prefixes to try */
1025 int max_len; /* Max length of a prefix in PLIST */
1026 const char *name; /* Name of this list (used in config stuff) */
1029 /* List of prefixes to try when looking for executables. */
1031 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1033 /* List of prefixes to try when looking for startup (crt0) files. */
1035 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1037 /* List of prefixes to try when looking for include files. */
1039 static struct path_prefix include_prefixes = { 0, 0, "include" };
1041 /* Suffix to attach to directories searched for commands.
1042 This looks like `MACHINE/VERSION/'. */
1044 static const char *machine_suffix = 0;
1046 /* Suffix to attach to directories searched for commands.
1047 This is just `MACHINE/'. */
1049 static const char *just_machine_suffix = 0;
1051 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1053 static const char *gcc_exec_prefix;
1055 /* Adjusted value of standard_libexec_prefix. */
1057 static const char *gcc_libexec_prefix;
1059 /* Default prefixes to attach to command names. */
1061 #ifndef STANDARD_STARTFILE_PREFIX_1
1062 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1064 #ifndef STANDARD_STARTFILE_PREFIX_2
1065 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1068 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1069 #undef MD_EXEC_PREFIX
1070 #undef MD_STARTFILE_PREFIX
1071 #undef MD_STARTFILE_PREFIX_1
1074 /* If no prefixes defined, use the null string, which will disable them. */
1075 #ifndef MD_EXEC_PREFIX
1076 #define MD_EXEC_PREFIX ""
1078 #ifndef MD_STARTFILE_PREFIX
1079 #define MD_STARTFILE_PREFIX ""
1081 #ifndef MD_STARTFILE_PREFIX_1
1082 #define MD_STARTFILE_PREFIX_1 ""
1085 /* These directories are locations set at configure-time based on the
1086 --prefix option provided to configure. Their initializers are
1087 defined in Makefile.in. These paths are not *directly* used when
1088 gcc_exec_prefix is set because, in that case, we know where the
1089 compiler has been installed, and use paths relative to that
1090 location instead. */
1091 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1092 static const char *const standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1093 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1094 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1096 /* For native compilers, these are well-known paths containing
1097 components that may be provided by the system. For cross
1098 compilers, these paths are not used. */
1099 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1100 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1101 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1102 static const char *const standard_startfile_prefix_1
1103 = STANDARD_STARTFILE_PREFIX_1;
1104 static const char *const standard_startfile_prefix_2
1105 = STANDARD_STARTFILE_PREFIX_2;
1107 /* A relative path to be used in finding the location of tools
1108 relative to the driver. */
1109 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1111 /* Subdirectory to use for locating libraries. Set by
1112 set_multilib_dir based on the compilation options. */
1114 static const char *multilib_dir;
1116 /* Subdirectory to use for locating libraries in OS conventions. Set by
1117 set_multilib_dir based on the compilation options. */
1119 static const char *multilib_os_dir;
1121 /* Structure to keep track of the specs that have been defined so far.
1122 These are accessed using %(specname) or %[specname] in a compiler
1127 /* The following 2 fields must be first */
1128 /* to allow EXTRA_SPECS to be initialized */
1129 const char *name; /* name of the spec. */
1130 const char *ptr; /* available ptr if no static pointer */
1132 /* The following fields are not initialized */
1133 /* by EXTRA_SPECS */
1134 const char **ptr_spec; /* pointer to the spec itself. */
1135 struct spec_list *next; /* Next spec in linked list. */
1136 int name_len; /* length of the name */
1137 int alloc_p; /* whether string was allocated */
1140 #define INIT_STATIC_SPEC(NAME,PTR) \
1141 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1143 /* List of statically defined specs. */
1144 static struct spec_list static_specs[] =
1146 INIT_STATIC_SPEC ("asm", &asm_spec),
1147 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1148 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1149 INIT_STATIC_SPEC ("asm_options", &asm_options),
1150 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1151 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1152 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1153 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1154 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1155 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1156 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1157 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1158 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1159 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1160 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec),
1161 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1162 INIT_STATIC_SPEC ("link", &link_spec),
1163 INIT_STATIC_SPEC ("lib", &lib_spec),
1164 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec),
1165 INIT_STATIC_SPEC ("mflib", &mflib_spec),
1166 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec),
1167 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1168 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1169 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1170 INIT_STATIC_SPEC ("version", &compiler_version),
1171 INIT_STATIC_SPEC ("multilib", &multilib_select),
1172 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1173 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1174 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1175 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1176 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1177 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1178 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec),
1179 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec),
1180 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec),
1181 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1182 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1183 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1184 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1185 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1186 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec),
1187 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1188 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1191 #ifdef EXTRA_SPECS /* additional specs needed */
1192 /* Structure to keep track of just the first two args of a spec_list.
1193 That is all that the EXTRA_SPECS macro gives us. */
1196 const char *const name;
1197 const char *const ptr;
1200 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1201 static struct spec_list *extra_specs = (struct spec_list *) 0;
1204 /* List of dynamically allocates specs that have been defined so far. */
1206 static struct spec_list *specs = (struct spec_list *) 0;
1208 /* List of static spec functions. */
1210 static const struct spec_function static_spec_functions[] =
1212 { "getenv", getenv_spec_function },
1213 { "if-exists", if_exists_spec_function },
1214 { "if-exists-else", if_exists_else_spec_function },
1215 { "replace-outfile", replace_outfile_spec_function },
1216 { "remove-outfile", remove_outfile_spec_function },
1217 { "version-compare", version_compare_spec_function },
1218 { "include", include_spec_function },
1219 { "find-file", find_file_spec_function },
1220 { "find-plugindir", find_plugindir_spec_function },
1221 { "print-asm-header", print_asm_header_spec_function },
1222 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function },
1223 { "compare-debug-self-opt", compare_debug_self_opt_spec_function },
1224 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function },
1225 { "pass-through-libs", pass_through_libs_spec_func },
1226 #ifdef EXTRA_SPEC_FUNCTIONS
1227 EXTRA_SPEC_FUNCTIONS
1232 static int processing_spec_function;
1234 /* Add appropriate libgcc specs to OBSTACK, taking into account
1235 various permutations of -shared-libgcc, -shared, and such. */
1237 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1239 #ifndef USE_LD_AS_NEEDED
1240 #define USE_LD_AS_NEEDED 0
1244 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1245 const char *static_name, const char *eh_name)
1249 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}"
1250 "%{!static:%{!static-libgcc:"
1251 #if USE_LD_AS_NEEDED
1252 "%{!shared-libgcc:",
1253 static_name, " --as-needed ", shared_name, " --no-as-needed"
1256 shared_name, "%{!shared: ", static_name, "}"
1260 "%{!shared-libgcc:", static_name, " ", eh_name, "}"
1261 "%{shared-libgcc:", shared_name, " ", static_name, "}"
1265 "%{shared-libgcc:", shared_name, "}"
1266 "%{!shared-libgcc:", static_name, "}"
1269 "%{shared:", shared_name, "}"
1274 obstack_grow (obstack, buf, strlen (buf));
1277 #endif /* ENABLE_SHARED_LIBGCC */
1279 /* Initialize the specs lookup routines. */
1284 struct spec_list *next = (struct spec_list *) 0;
1285 struct spec_list *sl = (struct spec_list *) 0;
1289 return; /* Already initialized. */
1292 fnotice (stderr, "Using built-in specs.\n");
1295 extra_specs = XCNEWVEC (struct spec_list, ARRAY_SIZE (extra_specs_1));
1297 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1299 sl = &extra_specs[i];
1300 sl->name = extra_specs_1[i].name;
1301 sl->ptr = extra_specs_1[i].ptr;
1303 sl->name_len = strlen (sl->name);
1304 sl->ptr_spec = &sl->ptr;
1309 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1311 sl = &static_specs[i];
1316 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1317 /* ??? If neither -shared-libgcc nor --static-libgcc was
1318 seen, then we should be making an educated guess. Some proposed
1319 heuristics for ELF include:
1321 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1322 program will be doing dynamic loading, which will likely
1323 need the shared libgcc.
1325 (2) If "-ldl", then it's also a fair bet that we're doing
1328 (3) For each ET_DYN we're linking against (either through -lfoo
1329 or /some/path/foo.so), check to see whether it or one of
1330 its dependencies depends on a shared libgcc.
1334 If the runtime is fixed to look for program headers instead
1335 of calling __register_frame_info at all, for each object,
1336 use the shared libgcc if any EH symbol referenced.
1338 If crtstuff is fixed to not invoke __register_frame_info
1339 automatically, for each object, use the shared libgcc if
1340 any non-empty unwind section found.
1342 Doing any of this probably requires invoking an external program to
1343 do the actual object file scanning. */
1345 const char *p = libgcc_spec;
1348 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1349 when given the proper command line arguments. */
1352 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1354 init_gcc_specs (&obstack,
1356 #ifdef USE_LIBUNWIND_EXCEPTIONS
1362 #ifdef USE_LIBUNWIND_EXCEPTIONS
1363 # ifdef HAVE_LD_STATIC_DYNAMIC
1364 " %{!static:-Bstatic} -lunwind %{!static:-Bdynamic}"
1374 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1376 /* Ug. We don't know shared library extensions. Hope that
1377 systems that use this form don't do shared libraries. */
1378 init_gcc_specs (&obstack,
1382 #ifdef USE_LIBUNWIND_EXCEPTIONS
1391 obstack_1grow (&obstack, *p);
1392 in_sep = (*p == ' ');
1397 obstack_1grow (&obstack, '\0');
1398 libgcc_spec = XOBFINISH (&obstack, const char *);
1401 #ifdef USE_AS_TRADITIONAL_FORMAT
1402 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1404 static const char tf[] = "--traditional-format ";
1405 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1406 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1407 asm_spec = XOBFINISH (&obstack, const char *);
1411 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC
1412 # ifdef LINK_BUILDID_SPEC
1413 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1414 obstack_grow (&obstack, LINK_BUILDID_SPEC, sizeof(LINK_BUILDID_SPEC) - 1);
1416 # ifdef LINK_EH_SPEC
1417 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1418 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1420 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1421 link_spec = XOBFINISH (&obstack, const char *);
1427 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1428 removed; If the spec starts with a + then SPEC is added to the end of the
1432 set_spec (const char *name, const char *spec)
1434 struct spec_list *sl;
1435 const char *old_spec;
1436 int name_len = strlen (name);
1439 /* If this is the first call, initialize the statically allocated specs. */
1442 struct spec_list *next = (struct spec_list *) 0;
1443 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1445 sl = &static_specs[i];
1452 /* See if the spec already exists. */
1453 for (sl = specs; sl; sl = sl->next)
1454 if (name_len == sl->name_len && !strcmp (sl->name, name))
1459 /* Not found - make it. */
1460 sl = XNEW (struct spec_list);
1461 sl->name = xstrdup (name);
1462 sl->name_len = name_len;
1463 sl->ptr_spec = &sl->ptr;
1465 *(sl->ptr_spec) = "";
1470 old_spec = *(sl->ptr_spec);
1471 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1472 ? concat (old_spec, spec + 1, NULL)
1477 fnotice (stderr, "Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1480 /* Free the old spec. */
1481 if (old_spec && sl->alloc_p)
1482 free (CONST_CAST(char *, old_spec));
1487 /* Accumulate a command (program name and args), and run it. */
1489 typedef const char *const_char_p; /* For DEF_VEC_P. */
1490 DEF_VEC_P(const_char_p);
1491 DEF_VEC_ALLOC_P(const_char_p,heap);
1493 /* Vector of pointers to arguments in the current line of specifications. */
1495 static VEC(const_char_p,heap) *argbuf;
1497 /* Position in the argbuf vector containing the name of the output file
1498 (the value associated with the "-o" flag). */
1500 static int have_o_argbuf_index = 0;
1502 /* Were the options -c, -S or -E passed. */
1503 static int have_c = 0;
1505 /* Was the option -o passed. */
1506 static int have_o = 0;
1508 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1509 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1512 static struct temp_name {
1513 const char *suffix; /* suffix associated with the code. */
1514 int length; /* strlen (suffix). */
1515 int unique; /* Indicates whether %g or %u/%U was used. */
1516 const char *filename; /* associated filename. */
1517 int filename_length; /* strlen (filename). */
1518 struct temp_name *next;
1521 /* Number of commands executed so far. */
1523 static int execution_count;
1525 /* Number of commands that exited with a signal. */
1527 static int signal_count;
1529 /* Allocate the argument vector. */
1534 argbuf = VEC_alloc (const_char_p, heap, 10);
1537 /* Clear out the vector of arguments (after a command is executed). */
1542 VEC_truncate (const_char_p, argbuf, 0);
1545 /* Add one argument to the vector at the end.
1546 This is done when a space is seen or at the end of the line.
1547 If DELETE_ALWAYS is nonzero, the arg is a filename
1548 and the file should be deleted eventually.
1549 If DELETE_FAILURE is nonzero, the arg is a filename
1550 and the file should be deleted if this compilation fails. */
1553 store_arg (const char *arg, int delete_always, int delete_failure)
1555 VEC_safe_push (const_char_p, heap, argbuf, arg);
1557 if (strcmp (arg, "-o") == 0)
1558 have_o_argbuf_index = VEC_length (const_char_p, argbuf);
1559 if (delete_always || delete_failure)
1562 /* If the temporary file we should delete is specified as
1563 part of a joined argument extract the filename. */
1565 && (p = strrchr (arg, '=')))
1567 record_temp_file (arg, delete_always, delete_failure);
1571 /* Load specs from a file name named FILENAME, replacing occurrences of
1572 various different types of line-endings, \r\n, \n\r and just \r, with
1576 load_specs (const char *filename)
1580 struct stat statbuf;
1587 fnotice (stderr, "Reading specs from %s\n", filename);
1589 /* Open and stat the file. */
1590 desc = open (filename, O_RDONLY, 0);
1592 pfatal_with_name (filename);
1593 if (stat (filename, &statbuf) < 0)
1594 pfatal_with_name (filename);
1596 /* Read contents of file into BUFFER. */
1597 buffer = XNEWVEC (char, statbuf.st_size + 1);
1598 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1600 pfatal_with_name (filename);
1601 buffer[readlen] = 0;
1604 specs = XNEWVEC (char, readlen + 1);
1606 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1612 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1614 else if (*(buffer_p + 1) == '\n') /* \r\n */
1628 /* Read compilation specs from a file named FILENAME,
1629 replacing the default ones.
1631 A suffix which starts with `*' is a definition for
1632 one of the machine-specific sub-specs. The "suffix" should be
1633 *asm, *cc1, *cpp, *link, *startfile, etc.
1634 The corresponding spec is stored in asm_spec, etc.,
1635 rather than in the `compilers' vector.
1637 Anything invalid in the file is a fatal error. */
1640 read_specs (const char *filename, int main_p)
1645 buffer = load_specs (filename);
1647 /* Scan BUFFER for specs, putting them in the vector. */
1653 char *in, *out, *p1, *p2, *p3;
1655 /* Advance P in BUFFER to the next nonblank nocomment line. */
1656 p = skip_whitespace (p);
1660 /* Is this a special command that starts with '%'? */
1661 /* Don't allow this for the main specs file, since it would
1662 encourage people to overwrite it. */
1663 if (*p == '%' && !main_p)
1666 while (*p && *p != '\n')
1672 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1673 && (p1[sizeof "%include" - 1] == ' '
1674 || p1[sizeof "%include" - 1] == '\t'))
1678 p1 += sizeof ("%include");
1679 while (*p1 == ' ' || *p1 == '\t')
1682 if (*p1++ != '<' || p[-2] != '>')
1683 fatal_error ("specs %%include syntax malformed after "
1685 (long) (p1 - buffer + 1));
1688 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1689 read_specs (new_filename ? new_filename : p1, FALSE);
1692 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1693 && (p1[sizeof "%include_noerr" - 1] == ' '
1694 || p1[sizeof "%include_noerr" - 1] == '\t'))
1698 p1 += sizeof "%include_noerr";
1699 while (*p1 == ' ' || *p1 == '\t')
1702 if (*p1++ != '<' || p[-2] != '>')
1703 fatal_error ("specs %%include syntax malformed after "
1705 (long) (p1 - buffer + 1));
1708 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1710 read_specs (new_filename, FALSE);
1711 else if (verbose_flag)
1712 fnotice (stderr, "could not find specs file %s\n", p1);
1715 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1716 && (p1[sizeof "%rename" - 1] == ' '
1717 || p1[sizeof "%rename" - 1] == '\t'))
1720 struct spec_list *sl;
1721 struct spec_list *newsl;
1723 /* Get original name. */
1724 p1 += sizeof "%rename";
1725 while (*p1 == ' ' || *p1 == '\t')
1728 if (! ISALPHA ((unsigned char) *p1))
1729 fatal_error ("specs %%rename syntax malformed after "
1731 (long) (p1 - buffer));
1734 while (*p2 && !ISSPACE ((unsigned char) *p2))
1737 if (*p2 != ' ' && *p2 != '\t')
1738 fatal_error ("specs %%rename syntax malformed after "
1740 (long) (p2 - buffer));
1744 while (*p2 == ' ' || *p2 == '\t')
1747 if (! ISALPHA ((unsigned char) *p2))
1748 fatal_error ("specs %%rename syntax malformed after "
1750 (long) (p2 - buffer));
1752 /* Get new spec name. */
1754 while (*p3 && !ISSPACE ((unsigned char) *p3))
1758 fatal_error ("specs %%rename syntax malformed after "
1760 (long) (p3 - buffer));
1763 for (sl = specs; sl; sl = sl->next)
1764 if (name_len == sl->name_len && !strcmp (sl->name, p1))
1768 fatal_error ("specs %s spec was not found to be renamed", p1);
1770 if (strcmp (p1, p2) == 0)
1773 for (newsl = specs; newsl; newsl = newsl->next)
1774 if (strcmp (newsl->name, p2) == 0)
1775 fatal_error ("%s: attempt to rename spec %qs to "
1776 "already defined spec %qs",
1781 fnotice (stderr, "rename spec %s to %s\n", p1, p2);
1783 fnotice (stderr, "spec is '%s'\n\n", *(sl->ptr_spec));
1787 set_spec (p2, *(sl->ptr_spec));
1789 free (CONST_CAST (char *, *(sl->ptr_spec)));
1791 *(sl->ptr_spec) = "";
1796 fatal_error ("specs unknown %% command after %ld characters",
1797 (long) (p1 - buffer));
1800 /* Find the colon that should end the suffix. */
1802 while (*p1 && *p1 != ':' && *p1 != '\n')
1805 /* The colon shouldn't be missing. */
1807 fatal_error ("specs file malformed after %ld characters",
1808 (long) (p1 - buffer));
1810 /* Skip back over trailing whitespace. */
1812 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
1815 /* Copy the suffix to a string. */
1816 suffix = save_string (p, p2 - p);
1817 /* Find the next line. */
1818 p = skip_whitespace (p1 + 1);
1820 fatal_error ("specs file malformed after %ld characters",
1821 (long) (p - buffer));
1824 /* Find next blank line or end of string. */
1825 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
1828 /* Specs end at the blank line and do not include the newline. */
1829 spec = save_string (p, p1 - p);
1832 /* Delete backslash-newline sequences from the spec. */
1837 if (in[0] == '\\' && in[1] == '\n')
1839 else if (in[0] == '#')
1840 while (*in && *in != '\n')
1848 if (suffix[0] == '*')
1850 if (! strcmp (suffix, "*link_command"))
1851 link_command_spec = spec;
1853 set_spec (suffix + 1, spec);
1857 /* Add this pair to the vector. */
1859 = XRESIZEVEC (struct compiler, compilers, n_compilers + 2);
1861 compilers[n_compilers].suffix = suffix;
1862 compilers[n_compilers].spec = spec;
1864 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
1868 link_command_spec = spec;
1871 if (link_command_spec == 0)
1872 fatal_error ("spec file has no spec for linking");
1875 /* Record the names of temporary files we tell compilers to write,
1876 and delete them at the end of the run. */
1878 /* This is the common prefix we use to make temp file names.
1879 It is chosen once for each run of this program.
1880 It is substituted into a spec by %g or %j.
1881 Thus, all temp file names contain this prefix.
1882 In practice, all temp file names start with this prefix.
1884 This prefix comes from the envvar TMPDIR if it is defined;
1885 otherwise, from the P_tmpdir macro if that is defined;
1886 otherwise, in /usr/tmp or /tmp;
1887 or finally the current directory if all else fails. */
1889 static const char *temp_filename;
1891 /* Length of the prefix. */
1893 static int temp_filename_length;
1895 /* Define the list of temporary files to delete. */
1900 struct temp_file *next;
1903 /* Queue of files to delete on success or failure of compilation. */
1904 static struct temp_file *always_delete_queue;
1905 /* Queue of files to delete on failure of compilation. */
1906 static struct temp_file *failure_delete_queue;
1908 /* Record FILENAME as a file to be deleted automatically.
1909 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
1910 otherwise delete it in any case.
1911 FAIL_DELETE nonzero means delete it if a compilation step fails;
1912 otherwise delete it in any case. */
1915 record_temp_file (const char *filename, int always_delete, int fail_delete)
1917 char *const name = xstrdup (filename);
1921 struct temp_file *temp;
1922 for (temp = always_delete_queue; temp; temp = temp->next)
1923 if (! strcmp (name, temp->name))
1926 temp = XNEW (struct temp_file);
1927 temp->next = always_delete_queue;
1929 always_delete_queue = temp;
1936 struct temp_file *temp;
1937 for (temp = failure_delete_queue; temp; temp = temp->next)
1938 if (! strcmp (name, temp->name))
1941 temp = XNEW (struct temp_file);
1942 temp->next = failure_delete_queue;
1944 failure_delete_queue = temp;
1950 /* Delete all the temporary files whose names we previously recorded. */
1952 #ifndef DELETE_IF_ORDINARY
1953 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
1956 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
1957 if (unlink (NAME) < 0) \
1959 perror_with_name (NAME); \
1964 delete_if_ordinary (const char *name)
1970 printf ("Delete %s? (y or n) ", name);
1974 while ((c = getchar ()) != '\n' && c != EOF)
1977 if (i == 'y' || i == 'Y')
1979 DELETE_IF_ORDINARY (name, st, verbose_flag);
1983 delete_temp_files (void)
1985 struct temp_file *temp;
1987 for (temp = always_delete_queue; temp; temp = temp->next)
1988 delete_if_ordinary (temp->name);
1989 always_delete_queue = 0;
1992 /* Delete all the files to be deleted on error. */
1995 delete_failure_queue (void)
1997 struct temp_file *temp;
1999 for (temp = failure_delete_queue; temp; temp = temp->next)
2000 delete_if_ordinary (temp->name);
2004 clear_failure_queue (void)
2006 failure_delete_queue = 0;
2009 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2011 If DO_MULTI is true iterate over the paths twice, first with multilib
2012 suffix then without, otherwise iterate over the paths once without
2013 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2014 to avoid visiting the same path twice, but we could do better. For
2015 instance, /usr/lib/../lib is considered different from /usr/lib.
2016 At least EXTRA_SPACE chars past the end of the path passed to
2017 CALLBACK are available for use by the callback.
2018 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2020 Returns the value returned by CALLBACK. */
2023 for_each_path (const struct path_prefix *paths,
2026 void *(*callback) (char *, void *),
2027 void *callback_info)
2029 struct prefix_list *pl;
2030 const char *multi_dir = NULL;
2031 const char *multi_os_dir = NULL;
2032 const char *multi_suffix;
2033 const char *just_multi_suffix;
2036 bool skip_multi_dir = false;
2037 bool skip_multi_os_dir = false;
2039 multi_suffix = machine_suffix;
2040 just_multi_suffix = just_machine_suffix;
2041 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0)
2043 multi_dir = concat (multilib_dir, dir_separator_str, NULL);
2044 multi_suffix = concat (multi_suffix, multi_dir, NULL);
2045 just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL);
2047 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0)
2048 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL);
2052 size_t multi_dir_len = 0;
2053 size_t multi_os_dir_len = 0;
2055 size_t just_suffix_len;
2059 multi_dir_len = strlen (multi_dir);
2061 multi_os_dir_len = strlen (multi_os_dir);
2062 suffix_len = strlen (multi_suffix);
2063 just_suffix_len = strlen (just_multi_suffix);
2067 len = paths->max_len + extra_space + 1;
2068 if (suffix_len > multi_os_dir_len)
2071 len += multi_os_dir_len;
2072 path = XNEWVEC (char, len);
2075 for (pl = paths->plist; pl != 0; pl = pl->next)
2077 len = strlen (pl->prefix);
2078 memcpy (path, pl->prefix, len);
2080 /* Look first in MACHINE/VERSION subdirectory. */
2081 if (!skip_multi_dir)
2083 memcpy (path + len, multi_suffix, suffix_len + 1);
2084 ret = callback (path, callback_info);
2089 /* Some paths are tried with just the machine (ie. target)
2090 subdir. This is used for finding as, ld, etc. */
2092 && pl->require_machine_suffix == 2)
2094 memcpy (path + len, just_multi_suffix, just_suffix_len + 1);
2095 ret = callback (path, callback_info);
2100 /* Now try the base path. */
2101 if (!pl->require_machine_suffix
2102 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir))
2104 const char *this_multi;
2105 size_t this_multi_len;
2107 if (pl->os_multilib)
2109 this_multi = multi_os_dir;
2110 this_multi_len = multi_os_dir_len;
2114 this_multi = multi_dir;
2115 this_multi_len = multi_dir_len;
2119 memcpy (path + len, this_multi, this_multi_len + 1);
2123 ret = callback (path, callback_info);
2131 if (multi_dir == NULL && multi_os_dir == NULL)
2134 /* Run through the paths again, this time without multilibs.
2135 Don't repeat any we have already seen. */
2138 free (CONST_CAST (char *, multi_dir));
2140 free (CONST_CAST (char *, multi_suffix));
2141 multi_suffix = machine_suffix;
2142 free (CONST_CAST (char *, just_multi_suffix));
2143 just_multi_suffix = just_machine_suffix;
2146 skip_multi_dir = true;
2149 free (CONST_CAST (char *, multi_os_dir));
2150 multi_os_dir = NULL;
2153 skip_multi_os_dir = true;
2158 free (CONST_CAST (char *, multi_dir));
2159 free (CONST_CAST (char *, multi_suffix));
2160 free (CONST_CAST (char *, just_multi_suffix));
2163 free (CONST_CAST (char *, multi_os_dir));
2169 /* Callback for build_search_list. Adds path to obstack being built. */
2171 struct add_to_obstack_info {
2178 add_to_obstack (char *path, void *data)
2180 struct add_to_obstack_info *info = (struct add_to_obstack_info *) data;
2182 if (info->check_dir && !is_directory (path, false))
2185 if (!info->first_time)
2186 obstack_1grow (info->ob, PATH_SEPARATOR);
2188 obstack_grow (info->ob, path, strlen (path));
2190 info->first_time = false;
2194 /* Add or change the value of an environment variable, outputting the
2195 change to standard error if in verbose mode. */
2197 xputenv (const char *string)
2200 fnotice (stderr, "%s\n", string);
2201 putenv (CONST_CAST (char *, string));
2204 /* Build a list of search directories from PATHS.
2205 PREFIX is a string to prepend to the list.
2206 If CHECK_DIR_P is true we ensure the directory exists.
2207 If DO_MULTI is true, multilib paths are output first, then
2209 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2210 It is also used by the --print-search-dirs flag. */
2213 build_search_list (const struct path_prefix *paths, const char *prefix,
2214 bool check_dir, bool do_multi)
2216 struct add_to_obstack_info info;
2218 info.ob = &collect_obstack;
2219 info.check_dir = check_dir;
2220 info.first_time = true;
2222 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2223 obstack_1grow (&collect_obstack, '=');
2225 for_each_path (paths, do_multi, 0, add_to_obstack, &info);
2227 obstack_1grow (&collect_obstack, '\0');
2228 return XOBFINISH (&collect_obstack, char *);
2231 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2235 putenv_from_prefixes (const struct path_prefix *paths, const char *env_var,
2238 xputenv (build_search_list (paths, env_var, true, do_multi));
2241 /* Check whether NAME can be accessed in MODE. This is like access,
2242 except that it never considers directories to be executable. */
2245 access_check (const char *name, int mode)
2251 if (stat (name, &st) < 0
2252 || S_ISDIR (st.st_mode))
2256 return access (name, mode);
2259 /* Callback for find_a_file. Appends the file name to the directory
2260 path. If the resulting file exists in the right mode, return the
2261 full pathname to the file. */
2263 struct file_at_path_info {
2272 file_at_path (char *path, void *data)
2274 struct file_at_path_info *info = (struct file_at_path_info *) data;
2275 size_t len = strlen (path);
2277 memcpy (path + len, info->name, info->name_len);
2278 len += info->name_len;
2280 /* Some systems have a suffix for executable files.
2281 So try appending that first. */
2282 if (info->suffix_len)
2284 memcpy (path + len, info->suffix, info->suffix_len + 1);
2285 if (access_check (path, info->mode) == 0)
2290 if (access_check (path, info->mode) == 0)
2296 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2297 access to check permissions. If DO_MULTI is true, search multilib
2298 paths then non-multilib paths, otherwise do not search multilib paths.
2299 Return 0 if not found, otherwise return its name, allocated with malloc. */
2302 find_a_file (const struct path_prefix *pprefix, const char *name, int mode,
2305 struct file_at_path_info info;
2307 #ifdef DEFAULT_ASSEMBLER
2308 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2309 return xstrdup (DEFAULT_ASSEMBLER);
2312 #ifdef DEFAULT_LINKER
2313 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2314 return xstrdup (DEFAULT_LINKER);
2317 /* Determine the filename to execute (special case for absolute paths). */
2319 if (IS_ABSOLUTE_PATH (name))
2321 if (access (name, mode) == 0)
2322 return xstrdup (name);
2328 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "";
2329 info.name_len = strlen (info.name);
2330 info.suffix_len = strlen (info.suffix);
2333 return (char*) for_each_path (pprefix, do_multi,
2334 info.name_len + info.suffix_len,
2335 file_at_path, &info);
2338 /* Ranking of prefixes in the sort list. -B prefixes are put before
2341 enum path_prefix_priority
2343 PREFIX_PRIORITY_B_OPT,
2344 PREFIX_PRIORITY_LAST
2347 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2348 order according to PRIORITY. Within each PRIORITY, new entries are
2351 If WARN is nonzero, we will warn if no file is found
2352 through this prefix. WARN should point to an int
2353 which will be set to 1 if this entry is used.
2355 COMPONENT is the value to be passed to update_path.
2357 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2358 the complete value of machine_suffix.
2359 2 means try both machine_suffix and just_machine_suffix. */
2362 add_prefix (struct path_prefix *pprefix, const char *prefix,
2363 const char *component, /* enum prefix_priority */ int priority,
2364 int require_machine_suffix, int os_multilib)
2366 struct prefix_list *pl, **prev;
2369 for (prev = &pprefix->plist;
2370 (*prev) != NULL && (*prev)->priority <= priority;
2371 prev = &(*prev)->next)
2374 /* Keep track of the longest prefix. */
2376 prefix = update_path (prefix, component);
2377 len = strlen (prefix);
2378 if (len > pprefix->max_len)
2379 pprefix->max_len = len;
2381 pl = XNEW (struct prefix_list);
2382 pl->prefix = prefix;
2383 pl->require_machine_suffix = require_machine_suffix;
2384 pl->priority = priority;
2385 pl->os_multilib = os_multilib;
2387 /* Insert after PREV. */
2392 /* Same as add_prefix, but prepending target_system_root to prefix. */
2393 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2395 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2396 const char *component,
2397 /* enum prefix_priority */ int priority,
2398 int require_machine_suffix, int os_multilib)
2400 if (!IS_ABSOLUTE_PATH (prefix))
2401 fatal_error ("system path %qs is not absolute", prefix);
2403 if (target_system_root)
2405 if (target_sysroot_suffix)
2406 prefix = concat (target_sysroot_suffix, prefix, NULL);
2407 prefix = concat (target_system_root, prefix, NULL);
2409 /* We have to override this because GCC's notion of sysroot
2410 moves along with GCC. */
2414 add_prefix (pprefix, prefix, component, priority,
2415 require_machine_suffix, os_multilib);
2418 /* Execute the command specified by the arguments on the current line of spec.
2419 When using pipes, this includes several piped-together commands
2420 with `|' between them.
2422 Return 0 if successful, -1 if failed. */
2428 int n_commands; /* # of command. */
2430 struct pex_obj *pex;
2433 const char *prog; /* program name. */
2434 const char **argv; /* vector of args. */
2438 struct command *commands; /* each command buffer with above info. */
2440 gcc_assert (!processing_spec_function);
2444 string = find_a_file (&exec_prefixes,
2445 VEC_index (const_char_p, argbuf, 0), X_OK, false);
2447 VEC_replace (const_char_p, argbuf, 0, string);
2448 insert_wrapper (wrapper_string);
2451 /* Count # of piped commands. */
2452 for (n_commands = 1, i = 0; VEC_iterate (const_char_p, argbuf, i, arg); i++)
2453 if (strcmp (arg, "|") == 0)
2456 /* Get storage for each command. */
2457 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2459 /* Split argbuf into its separate piped processes,
2460 and record info about each one.
2461 Also search for the programs that are to be run. */
2463 VEC_safe_push (const_char_p, heap, argbuf, 0);
2465 commands[0].prog = VEC_index (const_char_p, argbuf, 0); /* first command. */
2466 commands[0].argv = VEC_address (const_char_p, argbuf);
2468 if (!wrapper_string)
2470 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false);
2471 commands[0].argv[0] = (string) ? string : commands[0].argv[0];
2474 for (n_commands = 1, i = 0; VEC_iterate (const_char_p, argbuf, i, arg); i++)
2475 if (arg && strcmp (arg, "|") == 0)
2476 { /* each command. */
2477 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2478 fatal_error ("-pipe not supported");
2480 VEC_replace (const_char_p, argbuf, i, 0); /* Termination of
2482 commands[n_commands].prog = VEC_index (const_char_p, argbuf, i + 1);
2483 commands[n_commands].argv
2484 = &(VEC_address (const_char_p, argbuf))[i + 1];
2485 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2488 commands[n_commands].argv[0] = string;
2492 /* If -v, print what we are about to do, and maybe query. */
2496 /* For help listings, put a blank line between sub-processes. */
2497 if (print_help_list)
2498 fputc ('\n', stderr);
2500 /* Print each piped command as a separate line. */
2501 for (i = 0; i < n_commands; i++)
2503 const char *const *j;
2505 if (verbose_only_flag)
2507 for (j = commands[i].argv; *j; j++)
2510 for (p = *j; *p; ++p)
2511 if (!ISALNUM ((unsigned char) *p)
2512 && *p != '_' && *p != '/' && *p != '-' && *p != '.')
2516 fprintf (stderr, " \"");
2517 for (p = *j; *p; ++p)
2519 if (*p == '"' || *p == '\\' || *p == '$')
2520 fputc ('\\', stderr);
2523 fputc ('"', stderr);
2526 fprintf (stderr, " %s", *j);
2530 for (j = commands[i].argv; *j; j++)
2531 fprintf (stderr, " %s", *j);
2533 /* Print a pipe symbol after all but the last command. */
2534 if (i + 1 != n_commands)
2535 fprintf (stderr, " |");
2536 fprintf (stderr, "\n");
2539 if (verbose_only_flag != 0)
2541 /* verbose_only_flag should act as if the spec was
2542 executed, so increment execution_count before
2543 returning. This prevents spurious warnings about
2544 unused linker input files, etc. */
2549 fnotice (stderr, "\nGo ahead? (y or n) ");
2553 while (getchar () != '\n')
2556 if (i != 'y' && i != 'Y')
2561 #ifdef ENABLE_VALGRIND_CHECKING
2562 /* Run the each command through valgrind. To simplify prepending the
2563 path to valgrind and the option "-q" (for quiet operation unless
2564 something triggers), we allocate a separate argv array. */
2566 for (i = 0; i < n_commands; i++)
2572 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2575 argv = XALLOCAVEC (const char *, argc + 3);
2577 argv[0] = VALGRIND_PATH;
2579 for (j = 2; j < argc + 2; j++)
2580 argv[j] = commands[i].argv[j - 2];
2583 commands[i].argv = argv;
2584 commands[i].prog = argv[0];
2588 /* Run each piped subprocess. */
2590 pex = pex_init (PEX_USE_PIPES | ((report_times || report_times_to_file)
2591 ? PEX_RECORD_TIMES : 0),
2592 progname, temp_filename);
2594 fatal_error ("pex_init failed: %m");
2596 for (i = 0; i < n_commands; i++)
2600 const char *string = commands[i].argv[0];
2602 errmsg = pex_run (pex,
2603 ((i + 1 == n_commands ? PEX_LAST : 0)
2604 | (string == commands[i].prog ? PEX_SEARCH : 0)),
2605 string, CONST_CAST (char **, commands[i].argv),
2610 fatal_error (errmsg);
2614 pfatal_with_name (errmsg);
2618 if (string != commands[i].prog)
2619 free (CONST_CAST (char *, string));
2624 /* Wait for all the subprocesses to finish. */
2628 struct pex_time *times = NULL;
2631 statuses = (int *) alloca (n_commands * sizeof (int));
2632 if (!pex_get_status (pex, n_commands, statuses))
2633 fatal_error ("failed to get exit status: %m");
2635 if (report_times || report_times_to_file)
2637 times = (struct pex_time *) alloca (n_commands * sizeof (struct pex_time));
2638 if (!pex_get_times (pex, n_commands, times))
2639 fatal_error ("failed to get process times: %m");
2644 for (i = 0; i < n_commands; ++i)
2646 int status = statuses[i];
2648 if (WIFSIGNALED (status))
2651 /* SIGPIPE is a special case. It happens in -pipe mode
2652 when the compiler dies before the preprocessor is done,
2653 or the assembler dies before the compiler is done.
2654 There's generally been an error already, and this is
2655 just fallout. So don't generate another error unless
2656 we would otherwise have succeeded. */
2657 if (WTERMSIG (status) == SIGPIPE
2658 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2665 internal_error ("%s (program %s)",
2666 strsignal (WTERMSIG (status)), commands[i].prog);
2668 else if (WIFEXITED (status)
2669 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2671 if (WEXITSTATUS (status) > greatest_status)
2672 greatest_status = WEXITSTATUS (status);
2676 if (report_times || report_times_to_file)
2678 struct pex_time *pt = ×[i];
2681 ut = ((double) pt->user_seconds
2682 + (double) pt->user_microseconds / 1.0e6);
2683 st = ((double) pt->system_seconds
2684 + (double) pt->system_microseconds / 1.0e6);
2689 fnotice (stderr, "# %s %.2f %.2f\n",
2690 commands[i].prog, ut, st);
2692 if (report_times_to_file)
2695 const char *const *j;
2697 fprintf (report_times_to_file, "%g %g", ut, st);
2699 for (j = &commands[i].prog; *j; j = &commands[i].argv[++c])
2702 for (p = *j; *p; ++p)
2703 if (*p == '"' || *p == '\\' || *p == '$'
2709 fprintf (report_times_to_file, " \"");
2710 for (p = *j; *p; ++p)
2712 if (*p == '"' || *p == '\\' || *p == '$')
2713 fputc ('\\', report_times_to_file);
2714 fputc (*p, report_times_to_file);
2716 fputc ('"', report_times_to_file);
2719 fprintf (report_times_to_file, " %s", *j);
2722 fputc ('\n', report_times_to_file);
2732 /* Find all the switches given to us
2733 and make a vector describing them.
2734 The elements of the vector are strings, one per switch given.
2735 If a switch uses following arguments, then the `part1' field
2736 is the switch itself and the `args' field
2737 is a null-terminated vector containing the following arguments.
2738 Bits in the `live_cond' field are:
2739 SWITCH_LIVE to indicate this switch is true in a conditional spec.
2740 SWITCH_FALSE to indicate this switch is overridden by a later switch.
2741 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
2742 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
2743 in all do_spec calls afterwards. Used for %<S from self specs.
2744 The `validated' field is nonzero if any spec has looked at this switch;
2745 if it remains zero at the end of the run, it must be meaningless. */
2747 #define SWITCH_LIVE (1 << 0)
2748 #define SWITCH_FALSE (1 << 1)
2749 #define SWITCH_IGNORE (1 << 2)
2750 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
2751 #define SWITCH_KEEP_FOR_GCC (1 << 4)
2757 unsigned int live_cond;
2758 unsigned char validated;
2759 unsigned char ordering;
2762 static struct switchstr *switches;
2764 static int n_switches;
2766 static int n_switches_alloc;
2768 /* Set to zero if -fcompare-debug is disabled, positive if it's
2769 enabled and we're running the first compilation, negative if it's
2770 enabled and we're running the second compilation. For most of the
2771 time, it's in the range -1..1, but it can be temporarily set to 2
2772 or 3 to indicate that the -fcompare-debug flags didn't come from
2773 the command-line, but rather from the GCC_COMPARE_DEBUG environment
2774 variable, until a synthesized -fcompare-debug flag is added to the
2778 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
2779 int compare_debug_second;
2781 /* Set to the flags that should be passed to the second compilation in
2782 a -fcompare-debug compilation. */
2783 const char *compare_debug_opt;
2785 static struct switchstr *switches_debug_check[2];
2787 static int n_switches_debug_check[2];
2789 static int n_switches_alloc_debug_check[2];
2791 static char *debug_check_temp_file[2];
2793 /* Language is one of three things:
2795 1) The name of a real programming language.
2796 2) NULL, indicating that no one has figured out
2798 3) '*', indicating that the file should be passed
2803 const char *language;
2804 struct compiler *incompiler;
2809 /* Also a vector of input files specified. */
2811 static struct infile *infiles;
2815 static int n_infiles_alloc;
2817 /* True if multiple input files are being compiled to a single
2820 static bool combine_inputs;
2822 /* This counts the number of libraries added by lang_specific_driver, so that
2823 we can tell if there were any user supplied any files or libraries. */
2825 static int added_libraries;
2827 /* And a vector of corresponding output files is made up later. */
2829 const char **outfiles;
2831 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2833 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2834 is true if we should look for an executable suffix. DO_OBJ
2835 is true if we should look for an object suffix. */
2838 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
2839 int do_obj ATTRIBUTE_UNUSED)
2841 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2849 len = strlen (name);
2851 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2852 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2853 if (do_obj && len > 2
2854 && name[len - 2] == '.'
2855 && name[len - 1] == 'o')
2857 obstack_grow (&obstack, name, len - 2);
2858 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2859 name = XOBFINISH (&obstack, const char *);
2863 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2864 /* If there is no filetype, make it the executable suffix (which includes
2865 the "."). But don't get confused if we have just "-o". */
2866 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
2869 for (i = len - 1; i >= 0; i--)
2870 if (IS_DIR_SEPARATOR (name[i]))
2873 for (i++; i < len; i++)
2877 obstack_grow (&obstack, name, len);
2878 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
2879 strlen (TARGET_EXECUTABLE_SUFFIX));
2880 name = XOBFINISH (&obstack, const char *);
2887 /* Display the command line switches accepted by gcc. */
2891 printf (_("Usage: %s [options] file...\n"), progname);
2892 fputs (_("Options:\n"), stdout);
2894 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
2895 fputs (_(" --help Display this information\n"), stdout);
2896 fputs (_(" --target-help Display target specific command line options\n"), stdout);
2897 fputs (_(" --help={target|optimizers|warnings|params|[^]{joined|separate|undocumented}}[,...]\n"), stdout);
2898 fputs (_(" Display specific types of command line options\n"), stdout);
2900 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
2901 fputs (_(" --version Display compiler version information\n"), stdout);
2902 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
2903 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
2904 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
2905 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
2906 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
2907 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
2908 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
2909 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
2911 -print-multi-lib Display the mapping between command line options and\n\
2912 multiple library search directories\n"), stdout);
2913 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
2914 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout);
2915 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout);
2916 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
2917 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
2918 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
2919 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
2920 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
2921 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
2922 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
2923 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout);
2925 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
2926 prefixes to other gcc components\n"), stdout);
2927 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
2928 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
2929 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
2930 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
2932 --sysroot=<directory> Use <directory> as the root directory for headers\n\
2933 and libraries\n"), stdout);
2934 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
2935 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
2936 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
2937 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
2938 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
2939 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
2940 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
2942 -x <language> Specify the language of the following input files\n\
2943 Permissible languages include: c c++ assembler none\n\
2944 'none' means revert to the default behavior of\n\
2945 guessing the language based on the file's extension\n\
2949 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
2950 passed on to the various sub-processes invoked by %s. In order to pass\n\
2951 other options on to these processes the -W<letter> options must be used.\n\
2954 /* The rest of the options are displayed by invocations of the various
2959 add_preprocessor_option (const char *option, int len)
2961 VEC_safe_push (char_p, heap, preprocessor_options,
2962 save_string (option, len));
2966 add_assembler_option (const char *option, int len)
2968 VEC_safe_push (char_p, heap, assembler_options, save_string (option, len));
2972 add_linker_option (const char *option, int len)
2974 VEC_safe_push (char_p, heap, linker_options, save_string (option, len));
2977 /* Allocate space for an input file in infiles. */
2982 if (n_infiles_alloc == 0)
2984 n_infiles_alloc = 16;
2985 infiles = XNEWVEC (struct infile, n_infiles_alloc);
2987 else if (n_infiles_alloc == n_infiles)
2989 n_infiles_alloc *= 2;
2990 infiles = XRESIZEVEC (struct infile, infiles, n_infiles_alloc);
2994 /* Store an input file with the given NAME and LANGUAGE in
2998 add_infile (const char *name, const char *language)
3001 infiles[n_infiles].name = name;
3002 infiles[n_infiles++].language = language;
3005 /* Allocate space for a switch in switches. */
3010 if (n_switches_alloc == 0)
3012 n_switches_alloc = 16;
3013 switches = XNEWVEC (struct switchstr, n_switches_alloc);
3015 else if (n_switches_alloc == n_switches)
3017 n_switches_alloc *= 2;
3018 switches = XRESIZEVEC (struct switchstr, switches, n_switches_alloc);
3022 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3023 as validated if VALIDATED. */
3026 save_switch (const char *opt, size_t n_args, const char *const *args,
3030 switches[n_switches].part1 = opt + 1;
3032 switches[n_switches].args = 0;
3035 switches[n_switches].args = XNEWVEC (const char *, n_args + 1);
3036 memcpy (switches[n_switches].args, args, n_args * sizeof (const char *));
3037 switches[n_switches].args[n_args] = NULL;
3040 switches[n_switches].live_cond = 0;
3041 switches[n_switches].validated = validated;
3042 switches[n_switches].ordering = 0;
3046 /* Handle an option DECODED that is unknown to the option-processing
3047 machinery, but may be known to specs. */
3050 driver_unknown_option_callback (const struct cl_decoded_option *decoded)
3052 save_switch (decoded->canonical_option[0],
3053 decoded->canonical_option_num_elements - 1,
3054 &decoded->canonical_option[1], false);
3059 /* Handle an option DECODED that is not marked as CL_DRIVER.
3060 LANG_MASK will always be CL_DRIVER. */
3063 driver_wrong_lang_callback (const struct cl_decoded_option *decoded,
3064 unsigned int lang_mask ATTRIBUTE_UNUSED)
3066 /* At this point, non-driver options are accepted (and expected to
3067 be passed down by specs) unless marked to be rejected by the
3068 driver. Options to be rejected by the driver but accepted by the
3069 compilers proper are treated just like completely unknown
3071 const struct cl_option *option = &cl_options[decoded->opt_index];
3073 if (option->flags & CL_REJECT_DRIVER)
3074 error ("unrecognized command line option %qs",
3075 decoded->orig_option_with_args_text);
3077 driver_unknown_option_callback (decoded);
3080 /* Note that an option (index OPT_INDEX, argument ARG, value VALUE)
3081 has been successfully handled with a handler for mask MASK. */
3084 driver_post_handling_callback (const struct cl_decoded_option *decoded ATTRIBUTE_UNUSED,
3085 unsigned int mask ATTRIBUTE_UNUSED)
3087 /* Nothing to do here. */
3090 static const char *spec_lang = 0;
3091 static int last_language_n_infiles;
3093 /* Handle a driver option; arguments and return value as for
3097 driver_handle_option (struct gcc_options *opts,
3098 struct gcc_options *opts_set,
3099 const struct cl_decoded_option *decoded,
3100 unsigned int lang_mask ATTRIBUTE_UNUSED, int kind,
3102 const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED,
3103 diagnostic_context *dc)
3105 size_t opt_index = decoded->opt_index;
3106 const char *arg = decoded->arg;
3107 const char *compare_debug_replacement_opt;
3108 int value = decoded->value;
3109 bool validated = false;
3110 bool do_save = true;
3112 gcc_assert (opts == &global_options);
3113 gcc_assert (opts_set == &global_options_set);
3114 gcc_assert (kind == DK_UNSPECIFIED);
3115 gcc_assert (loc == UNKNOWN_LOCATION);
3116 gcc_assert (dc == global_dc);
3122 struct spec_list *sl;
3124 for (sl = specs; sl; sl = sl->next)
3125 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3126 if (link_command_spec)
3127 printf ("*link_command:\n%s\n\n", link_command_spec);
3131 case OPT_dumpversion:
3132 printf ("%s\n", spec_version);
3135 case OPT_dumpmachine:
3136 printf ("%s\n", spec_machine);
3142 /* CPP driver cannot obtain switch from cc1_options. */
3144 add_preprocessor_option ("--version", strlen ("--version"));
3145 add_assembler_option ("--version", strlen ("--version"));
3146 add_linker_option ("--version", strlen ("--version"));
3150 print_help_list = 1;
3152 /* CPP driver cannot obtain switch from cc1_options. */
3154 add_preprocessor_option ("--help", 6);
3155 add_assembler_option ("--help", 6);
3156 add_linker_option ("--help", 6);
3160 print_subprocess_help = 2;
3163 case OPT__target_help:
3164 print_subprocess_help = 1;
3166 /* CPP driver cannot obtain switch from cc1_options. */
3168 add_preprocessor_option ("--target-help", 13);
3169 add_assembler_option ("--target-help", 13);
3170 add_linker_option ("--target-help", 13);
3173 case OPT_pass_exit_codes:
3174 case OPT_print_search_dirs:
3175 case OPT_print_file_name_:
3176 case OPT_print_prog_name_:
3177 case OPT_print_multi_lib:
3178 case OPT_print_multi_directory:
3179 case OPT_print_sysroot:
3180 case OPT_print_multi_os_directory:
3181 case OPT_print_sysroot_headers_suffix:
3184 /* These options set the variables specified in common.opt
3185 automatically, and do not need to be saved for spec
3190 case OPT_print_libgcc_file_name:
3191 print_file_name = "libgcc.a";
3195 case OPT_fcompare_debug_second:
3196 compare_debug_second = 1;
3199 case OPT_fcompare_debug:
3203 compare_debug_replacement_opt = "-fcompare-debug=";
3205 goto compare_debug_with_arg;
3208 compare_debug_replacement_opt = "-fcompare-debug=-gtoggle";
3210 goto compare_debug_with_arg;
3217 case OPT_fcompare_debug_:
3218 compare_debug_replacement_opt = decoded->canonical_option[0];
3219 compare_debug_with_arg:
3220 gcc_assert (decoded->canonical_option_num_elements == 1);
3221 gcc_assert (arg != NULL);
3226 if (compare_debug < 0)
3227 compare_debug_opt = NULL;
3229 compare_debug_opt = arg;
3230 save_switch (compare_debug_replacement_opt, 0, NULL, validated);
3236 /* Pass the rest of this option to the assembler. */
3238 /* Split the argument at commas. */
3240 for (j = 0; arg[j]; j++)
3243 add_assembler_option (arg + prev, j - prev);
3247 /* Record the part after the last comma. */
3248 add_assembler_option (arg + prev, j - prev);
3256 /* Pass the rest of this option to the preprocessor. */
3258 /* Split the argument at commas. */
3260 for (j = 0; arg[j]; j++)
3263 add_preprocessor_option (arg + prev, j - prev);
3267 /* Record the part after the last comma. */
3268 add_preprocessor_option (arg + prev, j - prev);
3276 /* Split the argument at commas. */
3278 for (j = 0; arg[j]; j++)
3281 add_infile (save_string (arg + prev, j - prev), "*");
3284 /* Record the part after the last comma. */
3285 add_infile (arg + prev, "*");
3291 add_infile (arg, "*");
3295 case OPT_Xpreprocessor:
3296 add_preprocessor_option (arg, strlen (arg));
3300 case OPT_Xassembler:
3301 add_assembler_option (arg, strlen (arg));
3306 /* POSIX allows separation of -l and the lib arg; canonicalize
3307 by concatenating -l with its arg */
3308 add_infile (concat ("-l", arg, NULL), "*");
3313 /* Similarly, canonicalize -L for linkers that may not accept
3314 separate arguments. */
3315 save_switch (concat ("-L", arg, NULL), 0, NULL, validated);
3318 case OPT_save_temps:
3319 save_temps_flag = SAVE_TEMPS_CWD;
3323 case OPT_save_temps_:
3324 if (strcmp (arg, "cwd") == 0)
3325 save_temps_flag = SAVE_TEMPS_CWD;
3326 else if (strcmp (arg, "obj") == 0
3327 || strcmp (arg, "object") == 0)
3328 save_temps_flag = SAVE_TEMPS_OBJ;
3330 fatal_error ("%qs is an unknown -save-temps option",
3331 decoded->orig_option_with_args_text);
3334 case OPT_no_canonical_prefixes:
3335 /* Already handled as a special case, so ignored here. */
3341 /* These options set the variables specified in common.opt
3342 automatically, but do need to be saved for spec
3348 struct user_specs *user = XNEW (struct user_specs);
3350 user->next = (struct user_specs *) 0;
3351 user->filename = arg;
3352 if (user_specs_tail)
3353 user_specs_tail->next = user;
3355 user_specs_head = user;
3356 user_specs_tail = user;
3362 target_system_root = arg;
3363 target_system_root_changed = 1;
3368 if (report_times_to_file)
3369 fclose (report_times_to_file);
3370 report_times_to_file = fopen (arg, "a");
3376 This is similar to -v except that there is no execution
3377 of the commands and the echoed arguments are quoted. It
3378 is intended for use in shell scripts to capture the
3379 driver-generated command line. */
3380 verbose_only_flag++;
3387 size_t len = strlen (arg);
3389 /* Catch the case where the user has forgotten to append a
3390 directory separator to the path. Note, they may be using
3391 -B to add an executable name prefix, eg "i386-elf-", in
3392 order to distinguish between multiple installations of
3393 GCC in the same directory. Hence we must check to see
3394 if appending a directory separator actually makes a
3395 valid directory name. */
3396 if (!IS_DIR_SEPARATOR (arg[len - 1])
3397 && is_directory (arg, false))
3399 char *tmp = XNEWVEC (char, len + 2);
3401 tmp[len] = DIR_SEPARATOR;
3406 add_prefix (&exec_prefixes, arg, NULL,
3407 PREFIX_PRIORITY_B_OPT, 0, 0);
3408 add_prefix (&startfile_prefixes, arg, NULL,
3409 PREFIX_PRIORITY_B_OPT, 0, 0);
3410 add_prefix (&include_prefixes, arg, NULL,
3411 PREFIX_PRIORITY_B_OPT, 0, 0);
3418 if (!strcmp (spec_lang, "none"))
3419 /* Suppress the warning if -xnone comes after the last input
3420 file, because alternate command interfaces like g++ might
3421 find it useful to place -xnone after each input file. */
3424 last_language_n_infiles = n_infiles;
3430 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3431 arg = convert_filename (arg, ! have_c, 0);
3433 /* Save the output name in case -save-temps=obj was used. */
3434 save_temps_prefix = xstrdup (arg);
3435 /* On some systems, ld cannot handle "-o" without a space. So
3436 split the option from its argument. */
3437 save_switch ("-o", 1, &arg, validated);
3440 case OPT_static_libgcc:
3441 case OPT_shared_libgcc:
3442 case OPT_static_libgfortran:
3443 case OPT_static_libstdc__:
3444 /* These are always valid, since gcc.c itself understands the
3445 first two, gfortranspec.c understands -static-libgfortran and
3446 g++spec.c understands -static-libstdc++ */
3451 /* Various driver options need no special processing at this
3452 point, having been handled in a prescan above or being
3453 handled by specs. */
3458 save_switch (decoded->canonical_option[0],
3459 decoded->canonical_option_num_elements - 1,
3460 &decoded->canonical_option[1], validated);
3464 /* Put the driver's standard set of option handlers in *HANDLERS. */
3467 set_option_handlers (struct cl_option_handlers *handlers)
3469 handlers->unknown_option_callback = driver_unknown_option_callback;
3470 handlers->wrong_lang_callback = driver_wrong_lang_callback;
3471 handlers->post_handling_callback = driver_post_handling_callback;
3472 handlers->num_handlers = 1;
3473 handlers->handlers[0].handler = driver_handle_option;
3474 handlers->handlers[0].mask = CL_DRIVER;
3477 /* Create the vector `switches' and its contents.
3478 Store its length in `n_switches'. */
3481 process_command (unsigned int decoded_options_count,
3482 struct cl_decoded_option *decoded_options)
3486 const char *tooldir_prefix;
3487 char *(*get_relative_prefix) (const char *, const char *,
3488 const char *) = NULL;
3489 struct cl_option_handlers handlers;
3492 gcc_exec_prefix = getenv ("GCC_EXEC_PREFIX");
3496 added_libraries = 0;
3498 /* Figure compiler version from version string. */
3500 compiler_version = temp1 = xstrdup (version_string);
3502 for (; *temp1; ++temp1)
3511 /* Handle any -no-canonical-prefixes flag early, to assign the function
3512 that builds relative prefixes. This function creates default search
3513 paths that are needed later in normal option handling. */
3515 for (j = 1; j < decoded_options_count; j++)
3517 if (decoded_options[j].opt_index == OPT_no_canonical_prefixes)
3519 get_relative_prefix = make_relative_prefix_ignore_links;
3523 if (! get_relative_prefix)
3524 get_relative_prefix = make_relative_prefix;
3526 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3527 see if we can create it from the pathname specified in
3528 decoded_options[0].arg. */
3530 gcc_libexec_prefix = standard_libexec_prefix;
3532 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3533 if (!gcc_exec_prefix)
3535 gcc_exec_prefix = get_relative_prefix (decoded_options[0].arg,
3536 standard_bindir_prefix,
3537 standard_exec_prefix);
3538 gcc_libexec_prefix = get_relative_prefix (decoded_options[0].arg,
3539 standard_bindir_prefix,
3540 standard_libexec_prefix);
3541 if (gcc_exec_prefix)
3542 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3546 /* make_relative_prefix requires a program name, but
3547 GCC_EXEC_PREFIX is typically a directory name with a trailing
3548 / (which is ignored by make_relative_prefix), so append a
3550 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL);
3551 gcc_libexec_prefix = get_relative_prefix (tmp_prefix,
3552 standard_exec_prefix,
3553 standard_libexec_prefix);
3555 /* The path is unrelocated, so fallback to the original setting. */
3556 if (!gcc_libexec_prefix)
3557 gcc_libexec_prefix = standard_libexec_prefix;
3563 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3564 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3565 or an automatically created GCC_EXEC_PREFIX from
3566 decoded_options[0].arg. */
3568 /* Do language-specific adjustment/addition of flags. */
3569 lang_specific_driver (&decoded_options, &decoded_options_count,
3572 if (gcc_exec_prefix)
3574 int len = strlen (gcc_exec_prefix);
3576 if (len > (int) sizeof ("/lib/gcc/") - 1
3577 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3579 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3580 if (IS_DIR_SEPARATOR (*temp)
3581 && strncmp (temp + 1, "lib", 3) == 0
3582 && IS_DIR_SEPARATOR (temp[4])
3583 && strncmp (temp + 5, "gcc", 3) == 0)
3584 len -= sizeof ("/lib/gcc/") - 1;
3587 set_std_prefix (gcc_exec_prefix, len);
3588 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3589 PREFIX_PRIORITY_LAST, 0, 0);
3590 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3591 PREFIX_PRIORITY_LAST, 0, 0);
3594 /* COMPILER_PATH and LIBRARY_PATH have values
3595 that are lists of directory names with colons. */
3597 temp = getenv ("COMPILER_PATH");
3600 const char *startp, *endp;
3601 char *nstore = (char *) alloca (strlen (temp) + 3);
3603 startp = endp = temp;
3606 if (*endp == PATH_SEPARATOR || *endp == 0)
3608 strncpy (nstore, startp, endp - startp);
3610 strcpy (nstore, concat (".", dir_separator_str, NULL));
3611 else if (!IS_DIR_SEPARATOR (endp[-1]))
3613 nstore[endp - startp] = DIR_SEPARATOR;
3614 nstore[endp - startp + 1] = 0;
3617 nstore[endp - startp] = 0;
3618 add_prefix (&exec_prefixes, nstore, 0,
3619 PREFIX_PRIORITY_LAST, 0, 0);
3620 add_prefix (&include_prefixes, nstore, 0,
3621 PREFIX_PRIORITY_LAST, 0, 0);
3624 endp = startp = endp + 1;
3631 temp = getenv (LIBRARY_PATH_ENV);
3632 if (temp && *cross_compile == '0')
3634 const char *startp, *endp;
3635 char *nstore = (char *) alloca (strlen (temp) + 3);
3637 startp = endp = temp;
3640 if (*endp == PATH_SEPARATOR || *endp == 0)
3642 strncpy (nstore, startp, endp - startp);
3644 strcpy (nstore, concat (".", dir_separator_str, NULL));
3645 else if (!IS_DIR_SEPARATOR (endp[-1]))
3647 nstore[endp - startp] = DIR_SEPARATOR;
3648 nstore[endp - startp + 1] = 0;
3651 nstore[endp - startp] = 0;
3652 add_prefix (&startfile_prefixes, nstore, NULL,
3653 PREFIX_PRIORITY_LAST, 0, 1);
3656 endp = startp = endp + 1;
3663 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3664 temp = getenv ("LPATH");
3665 if (temp && *cross_compile == '0')
3667 const char *startp, *endp;
3668 char *nstore = (char *) alloca (strlen (temp) + 3);
3670 startp = endp = temp;
3673 if (*endp == PATH_SEPARATOR || *endp == 0)
3675 strncpy (nstore, startp, endp - startp);
3677 strcpy (nstore, concat (".", dir_separator_str, NULL));
3678 else if (!IS_DIR_SEPARATOR (endp[-1]))
3680 nstore[endp - startp] = DIR_SEPARATOR;
3681 nstore[endp - startp + 1] = 0;
3684 nstore[endp - startp] = 0;
3685 add_prefix (&startfile_prefixes, nstore, NULL,
3686 PREFIX_PRIORITY_LAST, 0, 1);
3689 endp = startp = endp + 1;
3696 /* Process the options and store input files and switches in their
3699 last_language_n_infiles = -1;
3701 set_option_handlers (&handlers);
3703 for (j = 1; j < decoded_options_count; j++)
3705 switch (decoded_options[j].opt_index)
3717 for (j = 1; j < decoded_options_count; j++)
3719 if (decoded_options[j].opt_index == OPT_SPECIAL_input_file)
3721 const char *arg = decoded_options[j].arg;
3722 const char *p = strrchr (arg, '@');
3726 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3727 arg = convert_filename (arg, 0, access (arg, F_OK));
3729 /* For LTO static archive support we handle input file
3730 specifications that are composed of a filename and
3731 an offset like FNAME@OFFSET. */
3734 && sscanf (p, "@%li%n", &offset, &consumed) >= 1
3735 && strlen (p) == (unsigned int)consumed)
3737 fname = (char *)xmalloc (p - arg + 1);
3738 memcpy (fname, arg, p - arg);
3739 fname[p - arg] = '\0';
3740 /* Only accept non-stdin and existing FNAME parts, otherwise
3741 try with the full name. */
3742 if (strcmp (fname, "-") == 0 || access (fname, F_OK) < 0)
3745 fname = xstrdup (arg);
3749 fname = xstrdup (arg);
3751 if (strcmp (fname, "-") != 0 && access (fname, F_OK) < 0)
3752 perror_with_name (fname);
3754 add_infile (arg, spec_lang);
3760 read_cmdline_option (&global_options, &global_options_set,
3761 decoded_options + j, UNKNOWN_LOCATION,
3762 CL_DRIVER, &handlers, global_dc);
3765 /* If -save-temps=obj and -o name, create the prefix to use for %b.
3766 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
3767 if (save_temps_flag == SAVE_TEMPS_OBJ && save_temps_prefix != NULL)
3769 save_temps_length = strlen (save_temps_prefix);
3770 temp = strrchr (lbasename (save_temps_prefix), '.');
3773 save_temps_length -= strlen (temp);
3774 save_temps_prefix[save_temps_length] = '\0';
3778 else if (save_temps_prefix != NULL)
3780 free (save_temps_prefix);
3781 save_temps_prefix = NULL;
3784 if (save_temps_flag && use_pipes)
3786 /* -save-temps overrides -pipe, so that temp files are produced */
3787 if (save_temps_flag)
3788 warning (0, "-pipe ignored because -save-temps specified");
3794 const char *gcd = getenv ("GCC_COMPARE_DEBUG");
3796 if (gcd && gcd[0] == '-')
3799 compare_debug_opt = gcd;
3801 else if (gcd && *gcd && strcmp (gcd, "0"))
3804 compare_debug_opt = "-gtoggle";
3807 else if (compare_debug < 0)
3810 gcc_assert (!compare_debug_opt);
3813 /* Set up the search paths. We add directories that we expect to
3814 contain GNU Toolchain components before directories specified by
3815 the machine description so that we will find GNU components (like
3816 the GNU assembler) before those of the host system. */
3818 /* If we don't know where the toolchain has been installed, use the
3819 configured-in locations. */
3820 if (!gcc_exec_prefix)
3823 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
3824 PREFIX_PRIORITY_LAST, 1, 0);
3825 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
3826 PREFIX_PRIORITY_LAST, 2, 0);
3827 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3828 PREFIX_PRIORITY_LAST, 2, 0);
3830 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3831 PREFIX_PRIORITY_LAST, 1, 0);
3834 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix));
3835 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3836 dir_separator_str, NULL);
3838 /* Look for tools relative to the location from which the driver is
3839 running, or, if that is not available, the configured prefix. */
3841 = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
3842 spec_machine, dir_separator_str,
3843 spec_version, dir_separator_str, tooldir_prefix, NULL);
3845 add_prefix (&exec_prefixes,
3846 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3847 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0);
3848 add_prefix (&startfile_prefixes,
3849 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3850 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1);
3852 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
3853 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
3854 then consider it to relocate with the rest of the GCC installation
3855 if GCC_EXEC_PREFIX is set.
3856 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
3857 if (target_system_root && !target_system_root_changed && gcc_exec_prefix)
3859 char *tmp_prefix = get_relative_prefix (decoded_options[0].arg,
3860 standard_bindir_prefix,
3861 target_system_root);
3862 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
3864 target_system_root = tmp_prefix;
3865 target_system_root_changed = 1;
3870 /* More prefixes are enabled in main, after we read the specs file
3871 and determine whether this is cross-compilation or not. */
3873 if (n_infiles == last_language_n_infiles && spec_lang != 0)
3874 warning (0, "%<-x %s%> after last input file has no effect", spec_lang);
3876 if (compare_debug == 2 || compare_debug == 3)
3879 switches[n_switches].part1 = concat ("fcompare-debug=",
3882 switches[n_switches].args = 0;
3883 switches[n_switches].live_cond = 0;
3884 switches[n_switches].validated = 0;
3885 switches[n_switches].ordering = 0;
3890 /* Ensure we only invoke each subprocess once. */
3891 if (print_subprocess_help || print_help_list || print_version)
3895 /* Create a dummy input file, so that we can pass
3896 the help option on to the various sub-processes. */
3897 add_infile ("help-dummy", "c");
3901 switches[n_switches].part1 = 0;
3903 infiles[n_infiles].name = 0;
3906 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
3907 and place that in the environment. */
3910 set_collect_gcc_options (void)
3915 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
3917 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
3918 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
3921 for (i = 0; (int) i < n_switches; i++)
3923 const char *const *args;
3926 obstack_grow (&collect_obstack, " ", 1);
3930 /* Ignore elided switches. */
3931 if ((switches[i].live_cond
3932 & (SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC))
3936 obstack_grow (&collect_obstack, "'-", 2);
3937 q = switches[i].part1;
3938 while ((p = strchr (q, '\'')))
3940 obstack_grow (&collect_obstack, q, p - q);
3941 obstack_grow (&collect_obstack, "'\\''", 4);
3944 obstack_grow (&collect_obstack, q, strlen (q));
3945 obstack_grow (&collect_obstack, "'", 1);
3947 for (args = switches[i].args; args && *args; args++)
3949 obstack_grow (&collect_obstack, " '", 2);
3951 while ((p = strchr (q, '\'')))
3953 obstack_grow (&collect_obstack, q, p - q);
3954 obstack_grow (&collect_obstack, "'\\''", 4);
3957 obstack_grow (&collect_obstack, q, strlen (q));
3958 obstack_grow (&collect_obstack, "'", 1);
3961 obstack_grow (&collect_obstack, "\0", 1);
3962 xputenv (XOBFINISH (&collect_obstack, char *));
3965 /* Process a spec string, accumulating and running commands. */
3967 /* These variables describe the input file name.
3968 input_file_number is the index on outfiles of this file,
3969 so that the output file name can be stored for later use by %o.
3970 input_basename is the start of the part of the input file
3971 sans all directory names, and basename_length is the number
3972 of characters starting there excluding the suffix .c or whatever. */
3974 static const char *gcc_input_filename;
3975 static int input_file_number;
3976 size_t input_filename_length;
3977 static int basename_length;
3978 static int suffixed_basename_length;
3979 static const char *input_basename;
3980 static const char *input_suffix;
3981 #ifndef HOST_LACKS_INODE_NUMBERS
3982 static struct stat input_stat;
3984 static int input_stat_set;
3986 /* The compiler used to process the current input file. */
3987 static struct compiler *input_file_compiler;
3989 /* These are variables used within do_spec and do_spec_1. */
3991 /* Nonzero if an arg has been started and not yet terminated
3992 (with space, tab or newline). */
3993 static int arg_going;
3995 /* Nonzero means %d or %g has been seen; the next arg to be terminated
3996 is a temporary file name. */
3997 static int delete_this_arg;
3999 /* Nonzero means %w has been seen; the next arg to be terminated
4000 is the output file name of this compilation. */
4001 static int this_is_output_file;
4003 /* Nonzero means %s has been seen; the next arg to be terminated
4004 is the name of a library file and we should try the standard
4005 search dirs for it. */
4006 static int this_is_library_file;
4008 /* Nonzero means %T has been seen; the next arg to be terminated
4009 is the name of a linker script and we should try all of the
4010 standard search dirs for it. If it is found insert a --script
4011 command line switch and then substitute the full path in place,
4012 otherwise generate an error message. */
4013 static int this_is_linker_script;
4015 /* Nonzero means that the input of this command is coming from a pipe. */
4016 static int input_from_pipe;
4018 /* Nonnull means substitute this for any suffix when outputting a switches
4020 static const char *suffix_subst;
4022 /* If there is an argument being accumulated, terminate it and store it. */
4025 end_going_arg (void)
4031 obstack_1grow (&obstack, 0);
4032 string = XOBFINISH (&obstack, const char *);
4033 if (this_is_library_file)
4034 string = find_file (string);
4035 if (this_is_linker_script)
4037 char * full_script_path = find_a_file (&startfile_prefixes, string, R_OK, true);
4039 if (full_script_path == NULL)
4041 error ("unable to locate default linker script %qs in the library search paths", string);
4042 /* Script was not found on search path. */
4045 store_arg ("--script", false, false);
4046 string = full_script_path;
4048 store_arg (string, delete_this_arg, this_is_output_file);
4049 if (this_is_output_file)
4050 outfiles[input_file_number] = string;
4056 /* Parse the WRAPPER string which is a comma separated list of the command line
4057 and insert them into the beginning of argbuf. */
4060 insert_wrapper (const char *wrapper)
4064 char *buf = xstrdup (wrapper);
4066 unsigned int old_length = VEC_length (const_char_p, argbuf);
4074 while ((p = strchr (p, ',')) != NULL);
4076 VEC_safe_grow (const_char_p, heap, argbuf, old_length + n);
4077 memmove (VEC_address (const_char_p, argbuf) + n,
4078 VEC_address (const_char_p, argbuf),
4079 old_length * sizeof (const_char_p));
4090 VEC_replace (const_char_p, argbuf, i, p);
4093 while ((p = strchr (p, ',')) != NULL);
4094 gcc_assert (i == n);
4097 /* Process the spec SPEC and run the commands specified therein.
4098 Returns 0 if the spec is successfully processed; -1 if failed. */
4101 do_spec (const char *spec)
4105 value = do_spec_2 (spec);
4107 /* Force out any unfinished command.
4108 If -pipe, this forces out the last command if it ended in `|'. */
4111 if (VEC_length (const_char_p, argbuf) > 0
4112 && !strcmp (VEC_last (const_char_p, argbuf), "|"))
4113 VEC_pop (const_char_p, argbuf);
4115 set_collect_gcc_options ();
4117 if (VEC_length (const_char_p, argbuf) > 0)
4125 do_spec_2 (const char *spec)
4131 delete_this_arg = 0;
4132 this_is_output_file = 0;
4133 this_is_library_file = 0;
4134 this_is_linker_script = 0;
4135 input_from_pipe = 0;
4136 suffix_subst = NULL;
4138 result = do_spec_1 (spec, 0, NULL);
4146 /* Process the given spec string and add any new options to the end
4147 of the switches/n_switches array. */
4150 do_option_spec (const char *name, const char *spec)
4152 unsigned int i, value_count, value_len;
4153 const char *p, *q, *value;
4154 char *tmp_spec, *tmp_spec_p;
4156 if (configure_default_options[0].name == NULL)
4159 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4160 if (strcmp (configure_default_options[i].name, name) == 0)
4162 if (i == ARRAY_SIZE (configure_default_options))
4165 value = configure_default_options[i].value;
4166 value_len = strlen (value);
4168 /* Compute the size of the final spec. */
4171 while ((p = strstr (p, "%(VALUE)")) != NULL)
4177 /* Replace each %(VALUE) by the specified value. */
4178 tmp_spec = (char *) alloca (strlen (spec) + 1
4179 + value_count * (value_len - strlen ("%(VALUE)")));
4180 tmp_spec_p = tmp_spec;
4182 while ((p = strstr (q, "%(VALUE)")) != NULL)
4184 memcpy (tmp_spec_p, q, p - q);
4185 tmp_spec_p = tmp_spec_p + (p - q);
4186 memcpy (tmp_spec_p, value, value_len);
4187 tmp_spec_p += value_len;
4188 q = p + strlen ("%(VALUE)");
4190 strcpy (tmp_spec_p, q);
4192 do_self_spec (tmp_spec);
4195 /* Process the given spec string and add any new options to the end
4196 of the switches/n_switches array. */
4199 do_self_spec (const char *spec)
4204 do_spec_1 (" ", 0, NULL);
4206 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4207 do_self_specs adds the replacements to switches array, so it shouldn't
4208 be processed afterwards. */
4209 for (i = 0; i < n_switches; i++)
4210 if ((switches[i].live_cond & SWITCH_IGNORE))
4211 switches[i].live_cond |= SWITCH_IGNORE_PERMANENTLY;
4213 if (VEC_length (const_char_p, argbuf) > 0)
4215 const char **argbuf_copy;
4216 struct cl_decoded_option *decoded_options;
4217 struct cl_option_handlers handlers;
4218 unsigned int decoded_options_count;
4221 /* Create a copy of argbuf with a dummy argv[0] entry for
4222 decode_cmdline_options_to_array. */
4223 argbuf_copy = XNEWVEC (const char *,
4224 VEC_length (const_char_p, argbuf) + 1);
4225 argbuf_copy[0] = "";
4226 memcpy (argbuf_copy + 1, VEC_address (const_char_p, argbuf),
4227 VEC_length (const_char_p, argbuf) * sizeof (const char *));
4229 decode_cmdline_options_to_array (VEC_length (const_char_p, argbuf) + 1,
4231 CL_DRIVER, &decoded_options,
4232 &decoded_options_count);
4234 set_option_handlers (&handlers);
4236 for (j = 1; j < decoded_options_count; j++)
4238 switch (decoded_options[j].opt_index)
4240 case OPT_SPECIAL_input_file:
4241 /* Specs should only generate options, not input
4243 if (strcmp (decoded_options[j].arg, "-") != 0)
4244 fatal_error ("switch %qs does not start with %<-%>",
4245 decoded_options[j].arg);
4247 fatal_error ("spec-generated switch is just %<-%>");
4250 case OPT_fcompare_debug_second:
4251 case OPT_fcompare_debug:
4252 case OPT_fcompare_debug_:
4254 /* Avoid duplicate processing of some options from
4255 compare-debug specs; just save them here. */
4256 save_switch (decoded_options[j].canonical_option[0],
4257 (decoded_options[j].canonical_option_num_elements
4259 &decoded_options[j].canonical_option[1], false);
4263 read_cmdline_option (&global_options, &global_options_set,
4264 decoded_options + j, UNKNOWN_LOCATION,
4265 CL_DRIVER, &handlers, global_dc);
4271 switches[n_switches].part1 = 0;
4275 /* Callback for processing %D and %I specs. */
4277 struct spec_path_info {
4282 bool separate_options;
4286 spec_path (char *path, void *data)
4288 struct spec_path_info *info = (struct spec_path_info *) data;
4292 if (info->omit_relative && !IS_ABSOLUTE_PATH (path))
4295 if (info->append_len != 0)
4297 len = strlen (path);
4298 memcpy (path + len, info->append, info->append_len + 1);
4301 if (!is_directory (path, true))
4304 do_spec_1 (info->option, 1, NULL);
4305 if (info->separate_options)
4306 do_spec_1 (" ", 0, NULL);
4308 if (info->append_len == 0)
4310 len = strlen (path);
4311 save = path[len - 1];
4312 if (IS_DIR_SEPARATOR (path[len - 1]))
4313 path[len - 1] = '\0';
4316 do_spec_1 (path, 1, NULL);
4317 do_spec_1 (" ", 0, NULL);
4319 /* Must not damage the original path. */
4320 if (info->append_len == 0)
4321 path[len - 1] = save;
4326 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4330 create_at_file (char **argv)
4332 char *temp_file = make_temp_file ("");
4333 char *at_argument = concat ("@", temp_file, NULL);
4334 FILE *f = fopen (temp_file, "w");
4338 fatal_error ("could not open temporary response file %s",
4341 status = writeargv (argv, f);
4344 fatal_error ("could not write to temporary response file %s",
4347 status = fclose (f);
4350 fatal_error ("could not close temporary response file %s",
4353 store_arg (at_argument, 0, 0);
4355 record_temp_file (temp_file, !save_temps_flag, !save_temps_flag);
4358 /* True if we should compile INFILE. */
4361 compile_input_file_p (struct infile *infile)
4363 if ((!infile->language) || (infile->language[0] != '*'))
4364 if (infile->incompiler == input_file_compiler)
4369 /* Process each member of VEC as a spec. */
4372 do_specs_vec (VEC(char_p,heap) *vec)
4377 FOR_EACH_VEC_ELT (char_p, vec, ix, opt)
4379 do_spec_1 (opt, 1, NULL);
4380 /* Make each accumulated option a separate argument. */
4381 do_spec_1 (" ", 0, NULL);
4385 /* Process the sub-spec SPEC as a portion of a larger spec.
4386 This is like processing a whole spec except that we do
4387 not initialize at the beginning and we do not supply a
4388 newline by default at the end.
4389 INSWITCH nonzero means don't process %-sequences in SPEC;
4390 in this case, % is treated as an ordinary character.
4391 This is used while substituting switches.
4392 INSWITCH nonzero also causes SPC not to terminate an argument.
4394 Value is zero unless a line was finished
4395 and the command on that line reported an error. */
4398 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4400 const char *p = spec;
4406 /* If substituting a switch, treat all chars like letters.
4407 Otherwise, NL, SPC, TAB and % are special. */
4408 switch (inswitch ? 'a' : c)
4413 if (VEC_length (const_char_p, argbuf) > 0
4414 && !strcmp (VEC_last (const_char_p, argbuf), "|"))
4416 /* A `|' before the newline means use a pipe here,
4417 but only if -pipe was specified.
4418 Otherwise, execute now and don't pass the `|' as an arg. */
4421 input_from_pipe = 1;
4425 VEC_pop (const_char_p, argbuf);
4428 set_collect_gcc_options ();
4430 if (VEC_length (const_char_p, argbuf) > 0)
4436 /* Reinitialize for a new command, and for a new argument. */
4439 delete_this_arg = 0;
4440 this_is_output_file = 0;
4441 this_is_library_file = 0;
4442 this_is_linker_script = 0;
4443 input_from_pipe = 0;
4450 obstack_1grow (&obstack, c);
4458 /* Reinitialize for a new argument. */
4459 delete_this_arg = 0;
4460 this_is_output_file = 0;
4461 this_is_library_file = 0;
4462 this_is_linker_script = 0;
4469 fatal_error ("spec %qs invalid", spec);
4472 if (save_temps_length)
4473 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4475 obstack_grow (&obstack, input_basename, basename_length);
4476 if (compare_debug < 0)
4477 obstack_grow (&obstack, ".gk", 3);
4482 if (save_temps_length)
4483 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4485 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4486 if (compare_debug < 0)
4487 obstack_grow (&obstack, ".gk", 3);
4492 delete_this_arg = 2;
4495 /* Dump out the directories specified with LIBRARY_PATH,
4496 followed by the absolute directories
4497 that we search for startfiles. */
4500 struct spec_path_info info;
4503 info.append_len = 0;
4504 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4505 /* Used on systems which record the specified -L dirs
4506 and use them to search for dynamic linking.
4507 Relative directories always come from -B,
4508 and it is better not to use them for searching
4509 at run time. In particular, stage1 loses. */
4510 info.omit_relative = true;
4512 info.omit_relative = false;
4514 info.separate_options = false;
4516 for_each_path (&startfile_prefixes, true, 0, spec_path, &info);
4521 /* %efoo means report an error with `foo' as error message
4522 and don't execute any more commands for this file. */
4526 while (*p != 0 && *p != '\n')
4528 buf = (char *) alloca (p - q + 1);
4529 strncpy (buf, q, p - q);
4531 error ("%s", _(buf));
4536 /* %nfoo means report a notice with `foo' on stderr. */
4540 while (*p != 0 && *p != '\n')
4542 buf = (char *) alloca (p - q + 1);
4543 strncpy (buf, q, p - q);
4545 inform (0, "%s", _(buf));
4555 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4556 defined, and it is not a directory, and it is
4557 writable, use it. Otherwise, treat this like any
4558 other temporary file. */
4560 if ((!save_temps_flag)
4561 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4562 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4564 obstack_grow (&obstack, HOST_BIT_BUCKET,
4565 strlen (HOST_BIT_BUCKET));
4566 delete_this_arg = 0;
4571 goto create_temp_file;
4575 obstack_1grow (&obstack, '-');
4576 delete_this_arg = 0;
4579 /* consume suffix */
4580 while (*p == '.' || ISALNUM ((unsigned char) *p))
4582 if (p[0] == '%' && p[1] == 'O')
4587 goto create_temp_file;
4591 /* consume suffix */
4592 while (*p == '.' || ISALNUM ((unsigned char) *p))
4594 if (p[0] == '%' && p[1] == 'O')
4599 goto create_temp_file;
4605 struct temp_name *t;
4607 const char *suffix = p;
4608 char *saved_suffix = NULL;
4610 while (*p == '.' || ISALNUM ((unsigned char) *p))
4612 suffix_length = p - suffix;
4613 if (p[0] == '%' && p[1] == 'O')
4616 /* We don't support extra suffix characters after %O. */
4617 if (*p == '.' || ISALNUM ((unsigned char) *p))
4618 fatal_error ("spec %qs has invalid %<%%0%c%>", spec, *p);
4619 if (suffix_length == 0)
4620 suffix = TARGET_OBJECT_SUFFIX;
4624 = XNEWVEC (char, suffix_length
4625 + strlen (TARGET_OBJECT_SUFFIX));
4626 strncpy (saved_suffix, suffix, suffix_length);
4627 strcpy (saved_suffix + suffix_length,
4628 TARGET_OBJECT_SUFFIX);
4630 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4633 if (compare_debug < 0)
4635 suffix = concat (".gk", suffix, NULL);
4639 /* If -save-temps=obj and -o were specified, use that for the
4641 if (save_temps_length)
4644 temp_filename_length
4645 = save_temps_length + suffix_length + 1;
4646 tmp = (char *) alloca (temp_filename_length);
4647 memcpy (tmp, save_temps_prefix, save_temps_length);
4648 memcpy (tmp + save_temps_length, suffix, suffix_length);
4649 tmp[save_temps_length + suffix_length] = '\0';
4650 temp_filename = save_string (tmp,
4651 temp_filename_length + 1);
4652 obstack_grow (&obstack, temp_filename,
4653 temp_filename_length);
4655 delete_this_arg = 0;
4659 /* If the gcc_input_filename has the same suffix specified
4660 for the %g, %u, or %U, and -save-temps is specified,
4661 we could end up using that file as an intermediate
4662 thus clobbering the user's source file (.e.g.,
4663 gcc -save-temps foo.s would clobber foo.s with the
4664 output of cpp0). So check for this condition and
4665 generate a temp file as the intermediate. */
4667 if (save_temps_flag)
4670 temp_filename_length = basename_length + suffix_length + 1;
4671 tmp = (char *) alloca (temp_filename_length);
4672 memcpy (tmp, input_basename, basename_length);
4673 memcpy (tmp + basename_length, suffix, suffix_length);
4674 tmp[basename_length + suffix_length] = '\0';
4675 temp_filename = tmp;
4677 if (strcmp (temp_filename, gcc_input_filename) != 0)
4679 #ifndef HOST_LACKS_INODE_NUMBERS
4680 struct stat st_temp;
4682 /* Note, set_input() resets input_stat_set to 0. */
4683 if (input_stat_set == 0)
4685 input_stat_set = stat (gcc_input_filename,
4687 if (input_stat_set >= 0)
4691 /* If we have the stat for the gcc_input_filename
4692 and we can do the stat for the temp_filename
4693 then the they could still refer to the same
4694 file if st_dev/st_ino's are the same. */
4695 if (input_stat_set != 1
4696 || stat (temp_filename, &st_temp) < 0
4697 || input_stat.st_dev != st_temp.st_dev
4698 || input_stat.st_ino != st_temp.st_ino)
4700 /* Just compare canonical pathnames. */
4701 char* input_realname = lrealpath (gcc_input_filename);
4702 char* temp_realname = lrealpath (temp_filename);
4703 bool files_differ = strcmp (input_realname, temp_realname);
4704 free (input_realname);
4705 free (temp_realname);
4709 temp_filename = save_string (temp_filename,
4710 temp_filename_length + 1);
4711 obstack_grow (&obstack, temp_filename,
4712 temp_filename_length);
4714 delete_this_arg = 0;
4720 /* See if we already have an association of %g/%u/%U and
4722 for (t = temp_names; t; t = t->next)
4723 if (t->length == suffix_length
4724 && strncmp (t->suffix, suffix, suffix_length) == 0
4725 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
4728 /* Make a new association if needed. %u and %j
4730 if (t == 0 || c == 'u' || c == 'j')
4734 t = XNEW (struct temp_name);
4735 t->next = temp_names;
4738 t->length = suffix_length;
4741 t->suffix = saved_suffix;
4742 saved_suffix = NULL;
4745 t->suffix = save_string (suffix, suffix_length);
4746 t->unique = (c == 'u' || c == 'U' || c == 'j');
4747 temp_filename = make_temp_file (t->suffix);
4748 temp_filename_length = strlen (temp_filename);
4749 t->filename = temp_filename;
4750 t->filename_length = temp_filename_length;
4754 free (saved_suffix);
4756 obstack_grow (&obstack, t->filename, t->filename_length);
4757 delete_this_arg = 1;
4765 if (at_file_supplied)
4767 /* We are going to expand `%i' to `@FILE', where FILE
4768 is a newly-created temporary filename. The filenames
4769 that would usually be expanded in place of %o will be
4770 written to the temporary file. */
4775 for (i = 0; i < n_infiles; i++)
4776 if (compile_input_file_p (&infiles[i]))
4779 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
4781 /* Copy the strings over. */
4782 for (i = 0, j = 0; i < n_infiles; i++)
4783 if (compile_input_file_p (&infiles[i]))
4785 argv[j] = CONST_CAST (char *, infiles[i].name);
4786 infiles[i].compiled = true;
4791 create_at_file (argv);
4794 for (i = 0; (int) i < n_infiles; i++)
4795 if (compile_input_file_p (&infiles[i]))
4797 store_arg (infiles[i].name, 0, 0);
4798 infiles[i].compiled = true;
4803 obstack_grow (&obstack, gcc_input_filename,
4804 input_filename_length);
4811 struct spec_path_info info;
4815 do_spec_1 ("-imultilib", 1, NULL);
4816 /* Make this a separate argument. */
4817 do_spec_1 (" ", 0, NULL);
4818 do_spec_1 (multilib_dir, 1, NULL);
4819 do_spec_1 (" ", 0, NULL);
4822 if (gcc_exec_prefix)
4824 do_spec_1 ("-iprefix", 1, NULL);
4825 /* Make this a separate argument. */
4826 do_spec_1 (" ", 0, NULL);
4827 do_spec_1 (gcc_exec_prefix, 1, NULL);
4828 do_spec_1 (" ", 0, NULL);
4831 if (target_system_root_changed ||
4832 (target_system_root && target_sysroot_hdrs_suffix))
4834 do_spec_1 ("-isysroot", 1, NULL);
4835 /* Make this a separate argument. */
4836 do_spec_1 (" ", 0, NULL);
4837 do_spec_1 (target_system_root, 1, NULL);
4838 if (target_sysroot_hdrs_suffix)
4839 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
4840 do_spec_1 (" ", 0, NULL);
4843 info.option = "-isystem";
4844 info.append = "include";
4845 info.append_len = strlen (info.append);
4846 info.omit_relative = false;
4847 info.separate_options = true;
4849 for_each_path (&include_prefixes, false, info.append_len,
4852 info.append = "include-fixed";
4853 if (*sysroot_hdrs_suffix_spec)
4854 info.append = concat (info.append, dir_separator_str,
4855 multilib_dir, NULL);
4856 info.append_len = strlen (info.append);
4857 for_each_path (&include_prefixes, false, info.append_len,
4864 int max = n_infiles;
4865 max += lang_specific_extra_outfiles;
4867 if (HAVE_GNU_LD && at_file_supplied)
4869 /* We are going to expand `%o' to `@FILE', where FILE
4870 is a newly-created temporary filename. The filenames
4871 that would usually be expanded in place of %o will be
4872 written to the temporary file. */
4877 /* Convert OUTFILES into a form suitable for writeargv. */
4879 /* Determine how many are non-NULL. */
4880 for (n_files = 0, i = 0; i < max; i++)
4881 n_files += outfiles[i] != NULL;
4883 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
4885 /* Copy the strings over. */
4886 for (i = 0, j = 0; i < max; i++)
4889 argv[j] = CONST_CAST (char *, outfiles[i]);
4894 create_at_file (argv);
4897 for (i = 0; i < max; i++)
4899 store_arg (outfiles[i], 0, 0);
4904 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4909 this_is_library_file = 1;
4913 this_is_linker_script = 1;
4917 outfiles[input_file_number] = NULL;
4921 this_is_output_file = 1;
4926 unsigned int cur_index = VEC_length (const_char_p, argbuf);
4927 /* Handle the {...} following the %W. */
4929 fatal_error ("spec %qs has invalid %<%%W%c%>", spec, *p);
4930 p = handle_braces (p + 1);
4934 /* If any args were output, mark the last one for deletion
4936 if (VEC_length (const_char_p, argbuf) != cur_index)
4937 record_temp_file (VEC_last (const_char_p, argbuf), 0, 1);
4941 /* %x{OPTION} records OPTION for %X to output. */
4949 /* Skip past the option value and make a copy. */
4951 fatal_error ("spec %qs has invalid %<%%x%c%>", spec, *p);
4954 string = save_string (p1 + 1, p - p1 - 2);
4956 /* See if we already recorded this option. */
4957 FOR_EACH_VEC_ELT (char_p, linker_options, ix, opt)
4958 if (! strcmp (string, opt))
4964 /* This option is new; add it. */
4965 add_linker_option (string, strlen (string));
4969 /* Dump out the options accumulated previously using %x. */
4971 do_specs_vec (linker_options);
4974 /* Dump out the options accumulated previously using -Wa,. */
4976 do_specs_vec (assembler_options);
4979 /* Dump out the options accumulated previously using -Wp,. */
4981 do_specs_vec (preprocessor_options);
4984 /* Here are digits and numbers that just process
4985 a certain constant string as a spec. */
4988 value = do_spec_1 (cc1_spec, 0, NULL);
4994 value = do_spec_1 (cc1plus_spec, 0, NULL);
5000 value = do_spec_1 (asm_spec, 0, NULL);
5006 value = do_spec_1 (asm_final_spec, 0, NULL);
5013 const char *const spec
5014 = (input_file_compiler->cpp_spec
5015 ? input_file_compiler->cpp_spec
5017 value = do_spec_1 (spec, 0, NULL);
5024 value = do_spec_1 (endfile_spec, 0, NULL);
5030 value = do_spec_1 (link_spec, 0, NULL);
5036 value = do_spec_1 (lib_spec, 0, NULL);
5042 value = do_spec_1 (libgcc_spec, 0, NULL);
5048 /* We assume there is a directory
5049 separator at the end of this string. */
5050 if (target_system_root)
5052 obstack_grow (&obstack, target_system_root,
5053 strlen (target_system_root));
5054 if (target_sysroot_suffix)
5055 obstack_grow (&obstack, target_sysroot_suffix,
5056 strlen (target_sysroot_suffix));
5061 value = do_spec_1 (startfile_spec, 0, NULL);
5066 /* Here we define characters other than letters and digits. */
5069 p = handle_braces (p);
5075 p = handle_spec_function (p);
5081 obstack_1grow (&obstack, '%');
5088 while (p[len] && p[len] != ' ' && p[len] != '%')
5090 suffix_subst = save_string (p - 1, len + 1);
5095 /* Henceforth ignore the option(s) matching the pattern
5101 int have_wildcard = 0;
5106 switch_option = SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC;
5108 switch_option = SWITCH_IGNORE;
5110 while (p[len] && p[len] != ' ' && p[len] != '\t')
5113 if (p[len-1] == '*')
5116 for (i = 0; i < n_switches; i++)
5117 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5118 && (have_wildcard || switches[i].part1[len] == '\0'))
5120 switches[i].live_cond |= switch_option;
5121 switches[i].validated = 1;
5129 if (soft_matched_part)
5131 do_spec_1 (soft_matched_part, 1, NULL);
5132 do_spec_1 (" ", 0, NULL);
5135 /* Catch the case where a spec string contains something like
5136 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5137 hand side of the :. */
5138 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5141 /* Process a string found as the value of a spec given by name.
5142 This feature allows individual machine descriptions
5143 to add and use their own specs.
5144 %[...] modifies -D options the way %P does;
5145 %(...) uses the spec unmodified. */
5147 warning (0, "use of obsolete %%[ operator in specs");
5150 const char *name = p;
5151 struct spec_list *sl;
5154 /* The string after the S/P is the name of a spec that is to be
5156 while (*p && *p != ')' && *p != ']')
5159 /* See if it's in the list. */
5160 for (len = p - name, sl = specs; sl; sl = sl->next)
5161 if (sl->name_len == len && !strncmp (sl->name, name, len))
5163 name = *(sl->ptr_spec);
5165 fnotice (stderr, "Processing spec %c%s%c, which is '%s'\n",
5166 c, sl->name, (c == '(') ? ')' : ']', name);
5175 value = do_spec_1 (name, 0, NULL);
5181 char *x = (char *) alloca (strlen (name) * 2 + 1);
5183 const char *y = name;
5186 /* Copy all of NAME into BUF, but put __ after
5187 every -D and at the end of each arg. */
5190 if (! strncmp (y, "-D", 2))
5201 && (*y == ' ' || *y == '\t' || *y == '='
5202 || *y == '}' || *y == 0))
5215 value = do_spec_1 (buf, 0, NULL);
5221 /* Discard the closing paren or bracket. */
5228 error ("spec failure: unrecognized spec option %qc", c);
5234 /* Backslash: treat next character as ordinary. */
5239 /* Ordinary character: put it into the current argument. */
5240 obstack_1grow (&obstack, c);
5244 /* End of string. If we are processing a spec function, we need to
5245 end any pending argument. */
5246 if (processing_spec_function)
5252 /* Look up a spec function. */
5254 static const struct spec_function *
5255 lookup_spec_function (const char *name)
5257 const struct spec_function *sf;
5259 for (sf = static_spec_functions; sf->name != NULL; sf++)
5260 if (strcmp (sf->name, name) == 0)
5266 /* Evaluate a spec function. */
5269 eval_spec_function (const char *func, const char *args)
5271 const struct spec_function *sf;
5272 const char *funcval;
5274 /* Saved spec processing context. */
5275 VEC(const_char_p,heap) *save_argbuf;
5278 int save_delete_this_arg;
5279 int save_this_is_output_file;
5280 int save_this_is_library_file;
5281 int save_input_from_pipe;
5282 int save_this_is_linker_script;
5283 const char *save_suffix_subst;
5286 sf = lookup_spec_function (func);
5288 fatal_error ("unknown spec function %qs", func);
5290 /* Push the spec processing context. */
5291 save_argbuf = argbuf;
5293 save_arg_going = arg_going;
5294 save_delete_this_arg = delete_this_arg;
5295 save_this_is_output_file = this_is_output_file;
5296 save_this_is_library_file = this_is_library_file;
5297 save_this_is_linker_script = this_is_linker_script;
5298 save_input_from_pipe = input_from_pipe;
5299 save_suffix_subst = suffix_subst;
5301 /* Create a new spec processing context, and build the function
5305 if (do_spec_2 (args) < 0)
5306 fatal_error ("error in args to spec function %qs", func);
5308 /* argbuf_index is an index for the next argument to be inserted, and
5309 so contains the count of the args already inserted. */
5311 funcval = (*sf->func) (VEC_length (const_char_p, argbuf),
5312 VEC_address (const_char_p, argbuf));
5314 /* Pop the spec processing context. */
5315 VEC_free (const_char_p, heap, argbuf);
5316 argbuf = save_argbuf;
5318 arg_going = save_arg_going;
5319 delete_this_arg = save_delete_this_arg;
5320 this_is_output_file = save_this_is_output_file;
5321 this_is_library_file = save_this_is_library_file;
5322 this_is_linker_script = save_this_is_linker_script;
5323 input_from_pipe = save_input_from_pipe;
5324 suffix_subst = save_suffix_subst;
5329 /* Handle a spec function call of the form:
5333 ARGS is processed as a spec in a separate context and split into an
5334 argument vector in the normal fashion. The function returns a string
5335 containing a spec which we then process in the caller's context, or
5336 NULL if no processing is required. */
5339 handle_spec_function (const char *p)
5342 const char *endp, *funcval;
5345 processing_spec_function++;
5347 /* Get the function name. */
5348 for (endp = p; *endp != '\0'; endp++)
5350 if (*endp == '(') /* ) */
5352 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5353 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5354 fatal_error ("malformed spec function name");
5356 if (*endp != '(') /* ) */
5357 fatal_error ("no arguments for spec function");
5358 func = save_string (p, endp - p);
5361 /* Get the arguments. */
5362 for (count = 0; *endp != '\0'; endp++)
5371 else if (*endp == '(') /* ) */
5376 fatal_error ("malformed spec function arguments");
5377 args = save_string (p, endp - p);
5380 /* p now points to just past the end of the spec function expression. */
5382 funcval = eval_spec_function (func, args);
5383 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5389 processing_spec_function--;
5394 /* Inline subroutine of handle_braces. Returns true if the current
5395 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5397 input_suffix_matches (const char *atom, const char *end_atom)
5399 return (input_suffix
5400 && !strncmp (input_suffix, atom, end_atom - atom)
5401 && input_suffix[end_atom - atom] == '\0');
5404 /* Subroutine of handle_braces. Returns true if the current
5405 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5407 input_spec_matches (const char *atom, const char *end_atom)
5409 return (input_file_compiler
5410 && input_file_compiler->suffix
5411 && input_file_compiler->suffix[0] != '\0'
5412 && !strncmp (input_file_compiler->suffix + 1, atom,
5414 && input_file_compiler->suffix[end_atom - atom + 1] == '\0');
5417 /* Subroutine of handle_braces. Returns true if a switch
5418 matching the atom bracketed by ATOM and END_ATOM appeared on the
5421 switch_matches (const char *atom, const char *end_atom, int starred)
5424 int len = end_atom - atom;
5425 int plen = starred ? len : -1;
5427 for (i = 0; i < n_switches; i++)
5428 if (!strncmp (switches[i].part1, atom, len)
5429 && (starred || switches[i].part1[len] == '\0')
5430 && check_live_switch (i, plen))
5436 /* Inline subroutine of handle_braces. Mark all of the switches which
5437 match ATOM (extends to END_ATOM; STARRED indicates whether there
5438 was a star after the atom) for later processing. */
5440 mark_matching_switches (const char *atom, const char *end_atom, int starred)
5443 int len = end_atom - atom;
5444 int plen = starred ? len : -1;
5446 for (i = 0; i < n_switches; i++)
5447 if (!strncmp (switches[i].part1, atom, len)
5448 && (starred || switches[i].part1[len] == '\0')
5449 && check_live_switch (i, plen))
5450 switches[i].ordering = 1;
5453 /* Inline subroutine of handle_braces. Process all the currently
5454 marked switches through give_switch, and clear the marks. */
5456 process_marked_switches (void)
5460 for (i = 0; i < n_switches; i++)
5461 if (switches[i].ordering == 1)
5463 switches[i].ordering = 0;
5468 /* Handle a %{ ... } construct. P points just inside the leading {.
5469 Returns a pointer one past the end of the brace block, or 0
5470 if we call do_spec_1 and that returns -1. */
5473 handle_braces (const char *p)
5475 const char *atom, *end_atom;
5476 const char *d_atom = NULL, *d_end_atom = NULL;
5477 const char *orig = p;
5485 bool a_must_be_last = false;
5486 bool ordered_set = false;
5487 bool disjunct_set = false;
5488 bool disj_matched = false;
5489 bool disj_starred = true;
5490 bool n_way_choice = false;
5491 bool n_way_matched = false;
5493 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5500 /* Scan one "atom" (S in the description above of %{}, possibly
5501 with '!', '.', '@', ',', or '*' modifiers). */
5503 a_is_suffix = false;
5504 a_is_starred = false;
5505 a_is_negated = false;
5506 a_is_spectype = false;
5510 p++, a_is_negated = true;
5514 p++, a_is_suffix = true;
5516 p++, a_is_spectype = true;
5519 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5520 || *p == ',' || *p == '.' || *p == '@')
5525 p++, a_is_starred = 1;
5531 /* Substitute the switch(es) indicated by the current atom. */
5533 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5534 || a_is_spectype || atom == end_atom)
5537 mark_matching_switches (atom, end_atom, a_is_starred);
5540 process_marked_switches ();
5544 /* Substitute some text if the current atom appears as a switch
5546 disjunct_set = true;
5550 if (atom == end_atom)
5552 if (!n_way_choice || disj_matched || *p == '|'
5553 || a_is_negated || a_is_suffix || a_is_spectype
5557 /* An empty term may appear as the last choice of an
5558 N-way choice set; it means "otherwise". */
5559 a_must_be_last = true;
5560 disj_matched = !n_way_matched;
5561 disj_starred = false;
5565 if ((a_is_suffix || a_is_spectype) && a_is_starred)
5569 disj_starred = false;
5571 /* Don't bother testing this atom if we already have a
5573 if (!disj_matched && !n_way_matched)
5576 a_matched = input_suffix_matches (atom, end_atom);
5577 else if (a_is_spectype)
5578 a_matched = input_spec_matches (atom, end_atom);
5580 a_matched = switch_matches (atom, end_atom, a_is_starred);
5582 if (a_matched != a_is_negated)
5584 disj_matched = true;
5586 d_end_atom = end_atom;
5593 /* Found the body, that is, the text to substitute if the
5594 current disjunction matches. */
5595 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5596 disj_matched && !n_way_matched);
5600 /* If we have an N-way choice, reset state for the next
5604 n_way_choice = true;
5605 n_way_matched |= disj_matched;
5606 disj_matched = false;
5607 disj_starred = true;
5608 d_atom = d_end_atom = NULL;
5617 while (*p++ != '}');
5622 fatal_error ("braced spec %qs is invalid at %qc", orig, *p);
5627 /* Subroutine of handle_braces. Scan and process a brace substitution body
5628 (X in the description of %{} syntax). P points one past the colon;
5629 ATOM and END_ATOM bracket the first atom which was found to be true
5630 (present) in the current disjunction; STARRED indicates whether all
5631 the atoms in the current disjunction were starred (for syntax validation);
5632 MATCHED indicates whether the disjunction matched or not, and therefore
5633 whether or not the body is to be processed through do_spec_1 or just
5634 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5638 process_brace_body (const char *p, const char *atom, const char *end_atom,
5639 int starred, int matched)
5641 const char *body, *end_body;
5642 unsigned int nesting_level;
5643 bool have_subst = false;
5645 /* Locate the closing } or ;, honoring nested braces.
5646 Trim trailing whitespace. */
5655 if (!--nesting_level)
5658 else if (*p == ';' && nesting_level == 1)
5660 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
5662 else if (*p == '\0')
5668 while (end_body[-1] == ' ' || end_body[-1] == '\t')
5671 if (have_subst && !starred)
5676 /* Copy the substitution body to permanent storage and execute it.
5677 If have_subst is false, this is a simple matter of running the
5678 body through do_spec_1... */
5679 char *string = save_string (body, end_body - body);
5682 if (do_spec_1 (string, 0, NULL) < 0)
5687 /* ... but if have_subst is true, we have to process the
5688 body once for each matching switch, with %* set to the
5689 variant part of the switch. */
5690 unsigned int hard_match_len = end_atom - atom;
5693 for (i = 0; i < n_switches; i++)
5694 if (!strncmp (switches[i].part1, atom, hard_match_len)
5695 && check_live_switch (i, hard_match_len))
5697 if (do_spec_1 (string, 0,
5698 &switches[i].part1[hard_match_len]) < 0)
5700 /* Pass any arguments this switch has. */
5702 suffix_subst = NULL;
5710 fatal_error ("braced spec body %qs is invalid", body);
5713 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5714 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5715 spec, or -1 if either exact match or %* is used.
5717 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5718 whose value does not begin with "no-" is obsoleted by the same value
5719 with the "no-", similarly for a switch with the "no-" prefix. */
5722 check_live_switch (int switchnum, int prefix_length)
5724 const char *name = switches[switchnum].part1;
5727 /* If we already processed this switch and determined if it was
5728 live or not, return our past determination. */
5729 if (switches[switchnum].live_cond != 0)
5730 return ((switches[switchnum].live_cond & SWITCH_LIVE) != 0
5731 && (switches[switchnum].live_cond & SWITCH_FALSE) == 0
5732 && (switches[switchnum].live_cond & SWITCH_IGNORE_PERMANENTLY)
5735 /* In the common case of {<at-most-one-letter>*}, a negating
5736 switch would always match, so ignore that case. We will just
5737 send the conflicting switches to the compiler phase. */
5738 if (prefix_length >= 0 && prefix_length <= 1)
5741 /* Now search for duplicate in a manner that depends on the name. */
5745 for (i = switchnum + 1; i < n_switches; i++)
5746 if (switches[i].part1[0] == 'O')
5748 switches[switchnum].validated = 1;
5749 switches[switchnum].live_cond = SWITCH_FALSE;
5754 case 'W': case 'f': case 'm':
5755 if (! strncmp (name + 1, "no-", 3))
5757 /* We have Xno-YYY, search for XYYY. */
5758 for (i = switchnum + 1; i < n_switches; i++)
5759 if (switches[i].part1[0] == name[0]
5760 && ! strcmp (&switches[i].part1[1], &name[4]))
5762 switches[switchnum].validated = 1;
5763 switches[switchnum].live_cond = SWITCH_FALSE;
5769 /* We have XYYY, search for Xno-YYY. */
5770 for (i = switchnum + 1; i < n_switches; i++)
5771 if (switches[i].part1[0] == name[0]
5772 && switches[i].part1[1] == 'n'
5773 && switches[i].part1[2] == 'o'
5774 && switches[i].part1[3] == '-'
5775 && !strcmp (&switches[i].part1[4], &name[1]))
5777 switches[switchnum].validated = 1;
5778 switches[switchnum].live_cond = SWITCH_FALSE;
5785 /* Otherwise the switch is live. */
5786 switches[switchnum].live_cond |= SWITCH_LIVE;
5790 /* Pass a switch to the current accumulating command
5791 in the same form that we received it.
5792 SWITCHNUM identifies the switch; it is an index into
5793 the vector of switches gcc received, which is `switches'.
5794 This cannot fail since it never finishes a command line.
5796 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5799 give_switch (int switchnum, int omit_first_word)
5801 if ((switches[switchnum].live_cond & SWITCH_IGNORE) != 0)
5804 if (!omit_first_word)
5806 do_spec_1 ("-", 0, NULL);
5807 do_spec_1 (switches[switchnum].part1, 1, NULL);
5810 if (switches[switchnum].args != 0)
5813 for (p = switches[switchnum].args; *p; p++)
5815 const char *arg = *p;
5817 do_spec_1 (" ", 0, NULL);
5820 unsigned length = strlen (arg);
5823 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5824 if (arg[length] == '.')
5826 (CONST_CAST(char *, arg))[length] = 0;
5830 do_spec_1 (arg, 1, NULL);
5832 (CONST_CAST(char *, arg))[length] = '.';
5833 do_spec_1 (suffix_subst, 1, NULL);
5836 do_spec_1 (arg, 1, NULL);
5840 do_spec_1 (" ", 0, NULL);
5841 switches[switchnum].validated = 1;
5844 /* Search for a file named NAME trying various prefixes including the
5845 user's -B prefix and some standard ones.
5846 Return the absolute file name found. If nothing is found, return NAME. */
5849 find_file (const char *name)
5851 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true);
5852 return newname ? newname : name;
5855 /* Determine whether a directory exists. If LINKER, return 0 for
5856 certain fixed names not needed by the linker. */
5859 is_directory (const char *path1, bool linker)
5866 /* Ensure the string ends with "/.". The resulting path will be a
5867 directory even if the given path is a symbolic link. */
5868 len1 = strlen (path1);
5869 path = (char *) alloca (3 + len1);
5870 memcpy (path, path1, len1);
5872 if (!IS_DIR_SEPARATOR (cp[-1]))
5873 *cp++ = DIR_SEPARATOR;
5877 /* Exclude directories that the linker is known to search. */
5879 && IS_DIR_SEPARATOR (path[0])
5881 && strncmp (path + 1, "lib", 3) == 0)
5883 && strncmp (path + 1, "usr", 3) == 0
5884 && IS_DIR_SEPARATOR (path[4])
5885 && strncmp (path + 5, "lib", 3) == 0)))
5888 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5891 /* Set up the various global variables to indicate that we're processing
5892 the input file named FILENAME. */
5895 set_input (const char *filename)
5899 gcc_input_filename = filename;
5900 input_filename_length = strlen (gcc_input_filename);
5901 input_basename = lbasename (gcc_input_filename);
5903 /* Find a suffix starting with the last period,
5904 and set basename_length to exclude that suffix. */
5905 basename_length = strlen (input_basename);
5906 suffixed_basename_length = basename_length;
5907 p = input_basename + basename_length;
5908 while (p != input_basename && *p != '.')
5910 if (*p == '.' && p != input_basename)
5912 basename_length = p - input_basename;
5913 input_suffix = p + 1;
5918 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5919 we will need to do a stat on the gcc_input_filename. The
5920 INPUT_STAT_SET signals that the stat is needed. */
5924 /* On fatal signals, delete all the temporary files. */
5927 fatal_signal (int signum)
5929 signal (signum, SIG_DFL);
5930 delete_failure_queue ();
5931 delete_temp_files ();
5932 /* Get the same signal again, this time not handled,
5933 so its normal effect occurs. */
5934 kill (getpid (), signum);
5937 /* Compare the contents of the two files named CMPFILE[0] and
5938 CMPFILE[1]. Return zero if they're identical, nonzero
5942 compare_files (char *cmpfile[])
5945 FILE *temp[2] = { NULL, NULL };
5951 void *map[2] = { NULL, NULL };
5953 for (i = 0; i < 2; i++)
5957 if (stat (cmpfile[i], &st) < 0 || !S_ISREG (st.st_mode))
5959 error ("%s: could not determine length of compare-debug file %s",
5960 gcc_input_filename, cmpfile[i]);
5965 length[i] = st.st_size;
5968 if (!ret && length[0] != length[1])
5970 error ("%s: -fcompare-debug failure (length)", gcc_input_filename);
5975 for (i = 0; i < 2; i++)
5977 int fd = open (cmpfile[i], O_RDONLY);
5980 error ("%s: could not open compare-debug file %s",
5981 gcc_input_filename, cmpfile[i]);
5986 map[i] = mmap (NULL, length[i], PROT_READ, MAP_PRIVATE, fd, 0);
5989 if (map[i] == (void *) MAP_FAILED)
5998 if (memcmp (map[0], map[1], length[0]) != 0)
6000 error ("%s: -fcompare-debug failure", gcc_input_filename);
6005 for (i = 0; i < 2; i++)
6007 munmap ((caddr_t) map[i], length[i]);
6016 for (i = 0; i < 2; i++)
6018 temp[i] = fopen (cmpfile[i], "r");
6021 error ("%s: could not open compare-debug file %s",
6022 gcc_input_filename, cmpfile[i]);
6028 if (!ret && temp[0] && temp[1])
6032 c0 = fgetc (temp[0]);
6033 c1 = fgetc (temp[1]);
6037 error ("%s: -fcompare-debug failure",
6038 gcc_input_filename);
6047 for (i = 1; i >= 0; i--)
6056 extern int main (int, char **);
6059 main (int argc, char **argv)
6063 int linker_was_run = 0;
6064 int lang_n_infiles = 0;
6065 int num_linker_inputs = 0;
6066 char *explicit_link_files;
6068 char *lto_wrapper_file;
6070 struct user_specs *uptr;
6071 char **old_argv = argv;
6072 struct cl_decoded_option *decoded_options;
6073 unsigned int decoded_options_count;
6075 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
6076 on ?: in file-scope variable initializations. */
6077 asm_debug = ASM_DEBUG_SPEC;
6079 p = argv[0] + strlen (argv[0]);
6080 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
6084 xmalloc_set_program_name (progname);
6086 expandargv (&argc, &argv);
6088 /* Determine if any expansions were made. */
6089 if (argv != old_argv)
6090 at_file_supplied = true;
6092 global_options = global_options_init;
6094 decode_cmdline_options_to_array (argc, CONST_CAST2 (const char **, char **,
6097 &decoded_options, &decoded_options_count);
6099 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6100 /* Perform host dependent initialization when needed. */
6101 GCC_DRIVER_HOST_INITIALIZATION;
6104 /* Unlock the stdio streams. */
6105 unlock_std_streams ();
6107 gcc_init_libintl ();
6109 diagnostic_initialize (global_dc, 0);
6110 if (atexit (delete_temp_files) != 0)
6111 fatal_error ("atexit failed");
6113 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
6114 signal (SIGINT, fatal_signal);
6116 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
6117 signal (SIGHUP, fatal_signal);
6119 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
6120 signal (SIGTERM, fatal_signal);
6122 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
6123 signal (SIGPIPE, fatal_signal);
6126 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6127 receive the signal. A different setting is inheritable */
6128 signal (SIGCHLD, SIG_DFL);
6131 /* Allocate the argument vector. */
6134 obstack_init (&obstack);
6136 /* Build multilib_select, et. al from the separate lines that make up each
6137 multilib selection. */
6139 const char *const *q = multilib_raw;
6142 obstack_init (&multilib_obstack);
6143 while ((p = *q++) != (char *) 0)
6144 obstack_grow (&multilib_obstack, p, strlen (p));
6146 obstack_1grow (&multilib_obstack, 0);
6147 multilib_select = XOBFINISH (&multilib_obstack, const char *);
6149 q = multilib_matches_raw;
6150 while ((p = *q++) != (char *) 0)
6151 obstack_grow (&multilib_obstack, p, strlen (p));
6153 obstack_1grow (&multilib_obstack, 0);
6154 multilib_matches = XOBFINISH (&multilib_obstack, const char *);
6156 q = multilib_exclusions_raw;
6157 while ((p = *q++) != (char *) 0)
6158 obstack_grow (&multilib_obstack, p, strlen (p));
6160 obstack_1grow (&multilib_obstack, 0);
6161 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *);
6164 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
6167 obstack_1grow (&multilib_obstack, ' ');
6168 obstack_grow (&multilib_obstack,
6169 multilib_defaults_raw[i],
6170 strlen (multilib_defaults_raw[i]));
6174 obstack_1grow (&multilib_obstack, 0);
6175 multilib_defaults = XOBFINISH (&multilib_obstack, const char *);
6178 #ifdef INIT_ENVIRONMENT
6179 /* Set up any other necessary machine specific environment variables. */
6180 xputenv (INIT_ENVIRONMENT);
6183 /* Make a table of what switches there are (switches, n_switches).
6184 Make a table of specified input files (infiles, n_infiles).
6185 Decode switches that are handled locally. */
6187 process_command (decoded_options_count, decoded_options);
6189 /* Initialize the vector of specs to just the default.
6190 This means one element containing 0s, as a terminator. */
6192 compilers = XNEWVAR (struct compiler, sizeof default_compilers);
6193 memcpy (compilers, default_compilers, sizeof default_compilers);
6194 n_compilers = n_default_compilers;
6196 /* Read specs from a file if there is one. */
6198 machine_suffix = concat (spec_machine, dir_separator_str,
6199 spec_version, dir_separator_str, NULL);
6200 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6202 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true);
6203 /* Read the specs file unless it is a default one. */
6204 if (specs_file != 0 && strcmp (specs_file, "specs"))
6205 read_specs (specs_file, TRUE);
6209 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6210 for any override of as, ld and libraries. */
6211 specs_file = (char *) alloca (strlen (standard_exec_prefix)
6212 + strlen (just_machine_suffix) + sizeof ("specs"));
6214 strcpy (specs_file, standard_exec_prefix);
6215 strcat (specs_file, just_machine_suffix);
6216 strcat (specs_file, "specs");
6217 if (access (specs_file, R_OK) == 0)
6218 read_specs (specs_file, TRUE);
6220 /* Process any configure-time defaults specified for the command line
6221 options, via OPTION_DEFAULT_SPECS. */
6222 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6223 do_option_spec (option_default_specs[i].name,
6224 option_default_specs[i].spec);
6226 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6227 of the command line. */
6229 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6230 do_self_spec (driver_self_specs[i]);
6234 enum save_temps save;
6236 if (!compare_debug_second)
6238 n_switches_debug_check[1] = n_switches;
6239 n_switches_alloc_debug_check[1] = n_switches_alloc;
6240 switches_debug_check[1] = XDUPVEC (struct switchstr, switches,
6243 do_self_spec ("%:compare-debug-self-opt()");
6244 n_switches_debug_check[0] = n_switches;
6245 n_switches_alloc_debug_check[0] = n_switches_alloc;
6246 switches_debug_check[0] = switches;
6248 n_switches = n_switches_debug_check[1];
6249 n_switches_alloc = n_switches_alloc_debug_check[1];
6250 switches = switches_debug_check[1];
6253 /* Avoid crash when computing %j in this early. */
6254 save = save_temps_flag;
6255 save_temps_flag = SAVE_TEMPS_NONE;
6257 compare_debug = -compare_debug;
6258 do_self_spec ("%:compare-debug-self-opt()");
6260 save_temps_flag = save;
6262 if (!compare_debug_second)
6264 n_switches_debug_check[1] = n_switches;
6265 n_switches_alloc_debug_check[1] = n_switches_alloc;
6266 switches_debug_check[1] = switches;
6267 compare_debug = -compare_debug;
6268 n_switches = n_switches_debug_check[0];
6269 n_switches_alloc = n_switches_debug_check[0];
6270 switches = switches_debug_check[0];
6274 /* If not cross-compiling, look for executables in the standard
6276 if (*cross_compile == '0')
6278 if (*md_exec_prefix)
6280 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6281 PREFIX_PRIORITY_LAST, 0, 0);
6285 /* Process sysroot_suffix_spec. */
6286 if (*sysroot_suffix_spec != 0
6287 && do_spec_2 (sysroot_suffix_spec) == 0)
6289 if (VEC_length (const_char_p, argbuf) > 1)
6290 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6291 else if (VEC_length (const_char_p, argbuf) == 1)
6292 target_sysroot_suffix = xstrdup (VEC_last (const_char_p, argbuf));
6295 #ifdef HAVE_LD_SYSROOT
6296 /* Pass the --sysroot option to the linker, if it supports that. If
6297 there is a sysroot_suffix_spec, it has already been processed by
6298 this point, so target_system_root really is the system root we
6300 if (target_system_root)
6302 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6303 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
6304 set_spec ("link", XOBFINISH (&obstack, const char *));
6308 /* Process sysroot_hdrs_suffix_spec. */
6309 if (*sysroot_hdrs_suffix_spec != 0
6310 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6312 if (VEC_length (const_char_p, argbuf) > 1)
6313 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6314 else if (VEC_length (const_char_p, argbuf) == 1)
6315 target_sysroot_hdrs_suffix = xstrdup (VEC_last (const_char_p, argbuf));
6318 /* Look for startfiles in the standard places. */
6319 if (*startfile_prefix_spec != 0
6320 && do_spec_2 (startfile_prefix_spec) == 0
6321 && do_spec_1 (" ", 0, NULL) == 0)
6325 FOR_EACH_VEC_ELT (const_char_p, argbuf, ndx, arg)
6326 add_sysrooted_prefix (&startfile_prefixes, arg, "BINUTILS",
6327 PREFIX_PRIORITY_LAST, 0, 1);
6329 /* We should eventually get rid of all these and stick to
6330 startfile_prefix_spec exclusively. */
6331 else if (*cross_compile == '0' || target_system_root)
6333 if (*md_startfile_prefix)
6334 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6335 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6337 if (*md_startfile_prefix_1)
6338 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6339 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6341 /* If standard_startfile_prefix is relative, base it on
6342 standard_exec_prefix. This lets us move the installed tree
6343 as a unit. If GCC_EXEC_PREFIX is defined, base
6344 standard_startfile_prefix on that as well.
6346 If the prefix is relative, only search it for native compilers;
6347 otherwise we will search a directory containing host libraries. */
6348 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
6349 add_sysrooted_prefix (&startfile_prefixes,
6350 standard_startfile_prefix, "BINUTILS",
6351 PREFIX_PRIORITY_LAST, 0, 1);
6352 else if (*cross_compile == '0')
6354 add_prefix (&startfile_prefixes,
6355 concat (gcc_exec_prefix
6356 ? gcc_exec_prefix : standard_exec_prefix,
6358 standard_startfile_prefix, NULL),
6359 NULL, PREFIX_PRIORITY_LAST, 0, 1);
6362 /* Sysrooted prefixes are relocated because target_system_root is
6363 also relocated by gcc_exec_prefix. */
6364 if (*standard_startfile_prefix_1)
6365 add_sysrooted_prefix (&startfile_prefixes,
6366 standard_startfile_prefix_1, "BINUTILS",
6367 PREFIX_PRIORITY_LAST, 0, 1);
6368 if (*standard_startfile_prefix_2)
6369 add_sysrooted_prefix (&startfile_prefixes,
6370 standard_startfile_prefix_2, "BINUTILS",
6371 PREFIX_PRIORITY_LAST, 0, 1);
6374 /* Process any user specified specs in the order given on the command
6376 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6378 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6380 read_specs (filename ? filename : uptr->filename, FALSE);
6383 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6384 if (gcc_exec_prefix)
6385 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6386 spec_version, dir_separator_str, NULL);
6388 /* Now we have the specs.
6389 Set the `valid' bits for switches that match anything in any spec. */
6391 validate_all_switches ();
6393 /* Now that we have the switches and the specs, set
6394 the subdirectory based on the options. */
6395 set_multilib_dir ();
6397 /* Set up to remember the pathname of gcc and any options
6398 needed for collect. We use argv[0] instead of progname because
6399 we need the complete pathname. */
6400 obstack_init (&collect_obstack);
6401 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6402 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6403 xputenv (XOBFINISH (&collect_obstack, char *));
6405 /* Set up to remember the pathname of the lto wrapper. */
6407 lto_wrapper_file = find_a_file (&exec_prefixes, "lto-wrapper", X_OK, false);
6408 if (lto_wrapper_file)
6410 lto_wrapper_spec = lto_wrapper_file;
6411 obstack_init (&collect_obstack);
6412 obstack_grow (&collect_obstack, "COLLECT_LTO_WRAPPER=",
6413 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
6414 obstack_grow (&collect_obstack, lto_wrapper_spec,
6415 strlen (lto_wrapper_spec) + 1);
6416 xputenv (XOBFINISH (&collect_obstack, char *));
6419 /* Warn about any switches that no pass was interested in. */
6421 for (i = 0; (int) i < n_switches; i++)
6422 if (! switches[i].validated)
6423 error ("unrecognized option %<-%s%>", switches[i].part1);
6425 /* Obey some of the options. */
6427 if (print_search_dirs)
6429 printf (_("install: %s%s\n"),
6430 gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
6431 gcc_exec_prefix ? "" : machine_suffix);
6432 printf (_("programs: %s\n"),
6433 build_search_list (&exec_prefixes, "", false, false));
6434 printf (_("libraries: %s\n"),
6435 build_search_list (&startfile_prefixes, "", false, true));
6439 if (print_file_name)
6441 printf ("%s\n", find_file (print_file_name));
6445 if (print_prog_name)
6447 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6448 printf ("%s\n", (newname ? newname : print_prog_name));
6452 if (print_multi_lib)
6454 print_multilib_info ();
6458 if (print_multi_directory)
6460 if (multilib_dir == NULL)
6463 printf ("%s\n", multilib_dir);
6469 if (target_system_root)
6471 if (target_sysroot_suffix)
6472 printf ("%s%s\n", target_system_root, target_sysroot_suffix);
6474 printf ("%s\n", target_system_root);
6479 if (print_multi_os_directory)
6481 if (multilib_os_dir == NULL)
6484 printf ("%s\n", multilib_os_dir);
6488 if (print_sysroot_headers_suffix)
6490 if (*sysroot_hdrs_suffix_spec)
6492 printf("%s\n", (target_sysroot_hdrs_suffix
6493 ? target_sysroot_hdrs_suffix
6498 /* The error status indicates that only one set of fixed
6499 headers should be built. */
6500 fatal_error ("not configured with sysroot headers suffix");
6503 if (print_help_list)
6509 printf (_("\nFor bug reporting instructions, please see:\n"));
6510 printf ("%s.\n", bug_report_url);
6515 /* We do not exit here. Instead we have created a fake input file
6516 called 'help-dummy' which needs to be compiled, and we pass this
6517 on the various sub-processes, along with the --help switch.
6518 Ensure their output appears after ours. */
6519 fputc ('\n', stdout);
6525 printf (_("%s %s%s\n"), progname, pkgversion_string,
6527 printf ("Copyright %s 2011 Free Software Foundation, Inc.\n",
6529 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
6530 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
6535 /* We do not exit here. We use the same mechanism of --help to print
6536 the version of the sub-processes. */
6537 fputc ('\n', stdout);
6546 fnotice (stderr, "Target: %s\n", spec_machine);
6547 fnotice (stderr, "Configured with: %s\n", configuration_arguments);
6549 #ifdef THREAD_MODEL_SPEC
6550 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6551 but there's no point in doing all this processing just to get
6552 thread_model back. */
6553 obstack_init (&obstack);
6554 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6555 obstack_1grow (&obstack, '\0');
6556 thrmod = XOBFINISH (&obstack, const char *);
6558 thrmod = thread_model;
6561 fnotice (stderr, "Thread model: %s\n", thrmod);
6563 /* compiler_version is truncated at the first space when initialized
6564 from version string, so truncate version_string at the first space
6565 before comparing. */
6566 for (n = 0; version_string[n]; n++)
6567 if (version_string[n] == ' ')
6570 if (! strncmp (version_string, compiler_version, n)
6571 && compiler_version[n] == 0)
6572 fnotice (stderr, "gcc version %s %s\n", version_string,
6575 fnotice (stderr, "gcc driver version %s %sexecuting gcc version %s\n",
6576 version_string, pkgversion_string, compiler_version);
6582 if (n_infiles == added_libraries)
6583 fatal_error ("no input files");
6585 /* Make a place to record the compiler output file names
6586 that correspond to the input files. */
6589 i += lang_specific_extra_outfiles;
6590 outfiles = XCNEWVEC (const char *, i);
6592 /* Record which files were specified explicitly as link input. */
6594 explicit_link_files = XCNEWVEC (char, n_infiles);
6596 combine_inputs = have_o || flag_wpa;
6598 for (i = 0; (int) i < n_infiles; i++)
6600 const char *name = infiles[i].name;
6601 struct compiler *compiler = lookup_compiler (name,
6603 infiles[i].language);
6605 if (compiler && !(compiler->combinable))
6606 combine_inputs = false;
6608 if (lang_n_infiles > 0 && compiler != input_file_compiler
6609 && infiles[i].language && infiles[i].language[0] != '*')
6610 infiles[i].incompiler = compiler;
6614 input_file_compiler = compiler;
6615 infiles[i].incompiler = compiler;
6619 /* Since there is no compiler for this input file, assume it is a
6621 explicit_link_files[i] = 1;
6622 infiles[i].incompiler = NULL;
6624 infiles[i].compiled = false;
6625 infiles[i].preprocessed = false;
6628 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1)
6629 fatal_error ("cannot specify -o with -c, -S or -E with multiple files");
6631 for (i = 0; (int) i < n_infiles; i++)
6633 int this_file_error = 0;
6635 /* Tell do_spec what to substitute for %i. */
6637 input_file_number = i;
6638 set_input (infiles[i].name);
6640 if (infiles[i].compiled)
6643 /* Use the same thing in %o, unless cp->spec says otherwise. */
6645 outfiles[i] = gcc_input_filename;
6647 /* Figure out which compiler from the file's suffix. */
6650 = lookup_compiler (infiles[i].name, input_filename_length,
6651 infiles[i].language);
6653 if (input_file_compiler)
6655 /* Ok, we found an applicable compiler. Run its spec. */
6657 if (input_file_compiler->spec[0] == '#')
6659 error ("%s: %s compiler not installed on this system",
6660 gcc_input_filename, &input_file_compiler->spec[1]);
6661 this_file_error = 1;
6667 if (debug_check_temp_file[0])
6668 free (debug_check_temp_file[0]);
6669 debug_check_temp_file[0] = NULL;
6671 if (debug_check_temp_file[1])
6672 free (debug_check_temp_file[1]);
6673 debug_check_temp_file[1] = NULL;
6676 value = do_spec (input_file_compiler->spec);
6677 infiles[i].compiled = true;
6679 this_file_error = 1;
6680 else if (compare_debug && debug_check_temp_file[0])
6683 inform (0, "recompiling with -fcompare-debug");
6685 compare_debug = -compare_debug;
6686 n_switches = n_switches_debug_check[1];
6687 n_switches_alloc = n_switches_alloc_debug_check[1];
6688 switches = switches_debug_check[1];
6690 value = do_spec (input_file_compiler->spec);
6692 compare_debug = -compare_debug;
6693 n_switches = n_switches_debug_check[0];
6694 n_switches_alloc = n_switches_alloc_debug_check[0];
6695 switches = switches_debug_check[0];
6699 error ("during -fcompare-debug recompilation");
6700 this_file_error = 1;
6703 gcc_assert (debug_check_temp_file[1]
6704 && strcmp (debug_check_temp_file[0],
6705 debug_check_temp_file[1]));
6708 inform (0, "comparing final insns dumps");
6710 if (compare_files (debug_check_temp_file))
6711 this_file_error = 1;
6716 if (debug_check_temp_file[0])
6717 free (debug_check_temp_file[0]);
6718 debug_check_temp_file[0] = NULL;
6720 if (debug_check_temp_file[1])
6721 free (debug_check_temp_file[1]);
6722 debug_check_temp_file[1] = NULL;
6727 /* If this file's name does not contain a recognized suffix,
6728 record it as explicit linker input. */
6731 explicit_link_files[i] = 1;
6733 /* Clear the delete-on-failure queue, deleting the files in it
6734 if this compilation failed. */
6736 if (this_file_error)
6738 delete_failure_queue ();
6741 /* If this compilation succeeded, don't delete those files later. */
6742 clear_failure_queue ();
6745 /* Reset the input file name to the first compile/object file name, for use
6746 with %b in LINK_SPEC. We use the first input file that we can find
6747 a compiler to compile it instead of using infiles.language since for
6748 languages other than C we use aliases that we then lookup later. */
6753 for (i = 0; i < n_infiles ; i++)
6754 if (infiles[i].incompiler
6755 || (infiles[i].language && infiles[i].language[0] != '*'))
6757 set_input (infiles[i].name);
6764 /* Make sure INPUT_FILE_NUMBER points to first available open
6766 input_file_number = n_infiles;
6767 if (lang_specific_pre_link ())
6771 /* Determine if there are any linker input files. */
6772 num_linker_inputs = 0;
6773 for (i = 0; (int) i < n_infiles; i++)
6774 if (explicit_link_files[i] || outfiles[i] != NULL)
6775 num_linker_inputs++;
6777 /* Run ld to link all the compiler output files. */
6779 if (num_linker_inputs > 0 && !seen_error () && print_subprocess_help < 2)
6781 int tmp = execution_count;
6782 const char *fuse_linker_plugin = "fuse-linker-plugin";
6784 /* We'll use ld if we can't find collect2. */
6785 if (! strcmp (linker_name_spec, "collect2"))
6787 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false);
6789 linker_name_spec = "ld";
6792 if (switch_matches (fuse_linker_plugin,
6793 fuse_linker_plugin + strlen (fuse_linker_plugin), 0))
6795 linker_plugin_file_spec = find_a_file (&exec_prefixes,
6796 LTOPLUGINSONAME, R_OK,
6798 if (!linker_plugin_file_spec)
6799 fatal_error ("-fuse-linker-plugin, but " LTOPLUGINSONAME " not found");
6801 lto_gcc_spec = argv[0];
6803 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6805 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false);
6806 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true);
6808 if (print_subprocess_help == 1)
6810 printf (_("\nLinker options\n==============\n\n"));
6811 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
6812 " to the linker.\n\n"));
6815 value = do_spec (link_command_spec);
6818 linker_was_run = (tmp != execution_count);
6821 /* If options said don't run linker,
6822 complain about input files to be given to the linker. */
6824 if (! linker_was_run && !seen_error ())
6825 for (i = 0; (int) i < n_infiles; i++)
6826 if (explicit_link_files[i]
6827 && !(infiles[i].language && infiles[i].language[0] == '*'))
6828 warning (0, "%s: linker input file unused because linking not done",
6831 /* Delete some or all of the temporary files we made. */
6834 delete_failure_queue ();
6835 delete_temp_files ();
6837 if (print_help_list)
6839 printf (("\nFor bug reporting instructions, please see:\n"));
6840 printf ("%s\n", bug_report_url);
6843 return (signal_count != 0 ? 2
6844 : seen_error () ? (pass_exit_codes ? greatest_status : 1)
6848 /* Find the proper compilation spec for the file name NAME,
6849 whose length is LENGTH. LANGUAGE is the specified language,
6850 or 0 if this file is to be passed to the linker. */
6852 static struct compiler *
6853 lookup_compiler (const char *name, size_t length, const char *language)
6855 struct compiler *cp;
6857 /* If this was specified by the user to be a linker input, indicate that. */
6858 if (language != 0 && language[0] == '*')
6861 /* Otherwise, look for the language, if one is spec'd. */
6864 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6865 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6868 error ("language %s not recognized", language);
6872 /* Look for a suffix. */
6873 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6875 if (/* The suffix `-' matches only the file name `-'. */
6876 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6877 || (strlen (cp->suffix) < length
6878 /* See if the suffix matches the end of NAME. */
6879 && !strcmp (cp->suffix,
6880 name + length - strlen (cp->suffix))
6885 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6886 /* Look again, but case-insensitively this time. */
6888 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6890 if (/* The suffix `-' matches only the file name `-'. */
6891 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6892 || (strlen (cp->suffix) < length
6893 /* See if the suffix matches the end of NAME. */
6894 && ((!strcmp (cp->suffix,
6895 name + length - strlen (cp->suffix))
6896 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6897 && !strcasecmp (cp->suffix,
6898 name + length - strlen (cp->suffix)))
6904 if (cp >= compilers)
6906 if (cp->spec[0] != '@')
6907 /* A non-alias entry: return it. */
6910 /* An alias entry maps a suffix to a language.
6911 Search for the language; pass 0 for NAME and LENGTH
6912 to avoid infinite recursion if language not found. */
6913 return lookup_compiler (NULL, 0, cp->spec + 1);
6919 save_string (const char *s, int len)
6921 char *result = XNEWVEC (char, len + 1);
6923 memcpy (result, s, len);
6929 pfatal_with_name (const char *name)
6931 perror_with_name (name);
6932 delete_temp_files ();
6937 perror_with_name (const char *name)
6939 error ("%s: %m", name);
6943 validate_switches_from_spec (const char *spec)
6945 const char *p = spec;
6948 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
6949 /* We have a switch spec. */
6950 p = validate_switches (p + 1);
6954 validate_all_switches (void)
6956 struct compiler *comp;
6957 struct spec_list *spec;
6959 for (comp = compilers; comp->spec; comp++)
6960 validate_switches_from_spec (comp->spec);
6962 /* Look through the linked list of specs read from the specs file. */
6963 for (spec = specs; spec; spec = spec->next)
6964 validate_switches_from_spec (*spec->ptr_spec);
6966 validate_switches_from_spec (link_command_spec);
6969 /* Look at the switch-name that comes after START
6970 and mark as valid all supplied switches that match it. */
6973 validate_switches (const char *start)
6975 const char *p = start;
6979 bool suffix = false;
6980 bool starred = false;
6982 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
6991 if (*p == '.' || *p == ',')
6995 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
6996 || *p == ',' || *p == '.' || *p == '@')
7001 starred = true, p++;
7007 /* Mark all matching switches as valid. */
7008 for (i = 0; i < n_switches; i++)
7009 if (!strncmp (switches[i].part1, atom, len)
7010 && (starred || switches[i].part1[len] == 0))
7011 switches[i].validated = 1;
7015 if (*p && (p[-1] == '|' || p[-1] == '&'))
7018 if (*p && p[-1] == ':')
7020 while (*p && *p != ';' && *p != '}')
7025 if (*p == '{' || *p == '<')
7026 p = validate_switches (p+1);
7027 else if (p[0] == 'W' && p[1] == '{')
7028 p = validate_switches (p+2);
7035 if (*p && p[-1] == ';')
7049 static struct mdswitchstr *mdswitches;
7050 static int n_mdswitches;
7052 /* Check whether a particular argument was used. The first time we
7053 canonicalize the switches to keep only the ones we care about. */
7056 used_arg (const char *p, int len)
7061 const char *replace;
7066 static struct mswitchstr *mswitches;
7067 static int n_mswitches;
7072 struct mswitchstr *matches;
7076 /* Break multilib_matches into the component strings of string
7077 and replacement string. */
7078 for (q = multilib_matches; *q != '\0'; q++)
7083 = (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
7085 q = multilib_matches;
7094 fatal_error ("multilib spec %qs is invalid",
7099 matches[i].len = q - matches[i].str;
7101 matches[i].replace = ++q;
7102 while (*q != ';' && *q != '\0')
7105 goto invalid_matches;
7108 matches[i].rep_len = q - matches[i].replace;
7114 /* Now build a list of the replacement string for switches that we care
7115 about. Make sure we allocate at least one entry. This prevents
7116 xmalloc from calling fatal, and prevents us from re-executing this
7119 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1));
7120 for (i = 0; i < n_switches; i++)
7121 if ((switches[i].live_cond & SWITCH_IGNORE) == 0)
7123 int xlen = strlen (switches[i].part1);
7124 for (j = 0; j < cnt; j++)
7125 if (xlen == matches[j].len
7126 && ! strncmp (switches[i].part1, matches[j].str, xlen))
7128 mswitches[n_mswitches].str = matches[j].replace;
7129 mswitches[n_mswitches].len = matches[j].rep_len;
7130 mswitches[n_mswitches].replace = (char *) 0;
7131 mswitches[n_mswitches].rep_len = 0;
7137 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7138 on the command line nor any options mutually incompatible with
7140 for (i = 0; i < n_mdswitches; i++)
7144 for (q = multilib_options; *q != '\0'; q++)
7150 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
7151 || strchr (" /", q[mdswitches[i].len]) == NULL)
7153 while (*q != ' ' && *q != '/' && *q != '\0')
7160 if (*q != ' ' && *q != '\0')
7162 while (*r != ' ' && *r != '\0')
7165 while (*q != ' ' && *q != '/' && *q != '\0')
7168 if (used_arg (r, q - r))
7173 mswitches[n_mswitches].str = mdswitches[i].str;
7174 mswitches[n_mswitches].len = mdswitches[i].len;
7175 mswitches[n_mswitches].replace = (char *) 0;
7176 mswitches[n_mswitches].rep_len = 0;
7189 for (i = 0; i < n_mswitches; i++)
7190 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
7197 default_arg (const char *p, int len)
7201 for (i = 0; i < n_mdswitches; i++)
7202 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
7208 /* Work out the subdirectory to use based on the options. The format of
7209 multilib_select is a list of elements. Each element is a subdirectory
7210 name followed by a list of options followed by a semicolon. The format
7211 of multilib_exclusions is the same, but without the preceding
7212 directory. First gcc will check the exclusions, if none of the options
7213 beginning with an exclamation point are present, and all of the other
7214 options are present, then we will ignore this completely. Passing
7215 that, gcc will consider each multilib_select in turn using the same
7216 rules for matching the options. If a match is found, that subdirectory
7220 set_multilib_dir (void)
7223 unsigned int this_path_len;
7224 const char *this_path, *this_arg;
7225 const char *start, *end;
7227 int ok, ndfltok, first;
7230 start = multilib_defaults;
7231 while (*start == ' ' || *start == '\t')
7233 while (*start != '\0')
7236 while (*start != ' ' && *start != '\t' && *start != '\0')
7238 while (*start == ' ' || *start == '\t')
7246 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches);
7247 for (start = multilib_defaults; *start != '\0'; start = end + 1)
7249 while (*start == ' ' || *start == '\t')
7255 for (end = start + 1;
7256 *end != ' ' && *end != '\t' && *end != '\0'; end++)
7259 obstack_grow (&multilib_obstack, start, end - start);
7260 obstack_1grow (&multilib_obstack, 0);
7261 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *);
7262 mdswitches[i++].len = end - start;
7269 p = multilib_exclusions;
7272 /* Ignore newlines. */
7279 /* Check the arguments. */
7286 fatal_error ("multilib exclusions %qs is invalid",
7287 multilib_exclusions);
7297 while (*p != ' ' && *p != ';')
7300 goto invalid_exclusions;
7304 if (*this_arg != '!')
7312 ok = used_arg (this_arg, p - this_arg);
7327 p = multilib_select;
7330 /* Ignore newlines. */
7337 /* Get the initial path. */
7344 fatal_error ("multilib select %qs is invalid",
7349 this_path_len = p - this_path;
7351 /* Check the arguments. */
7358 goto invalid_select;
7367 while (*p != ' ' && *p != ';')
7370 goto invalid_select;
7374 if (*this_arg != '!')
7382 /* If this is a default argument, we can just ignore it.
7383 This is true even if this_arg begins with '!'. Beginning
7384 with '!' does not mean that this argument is necessarily
7385 inappropriate for this library: it merely means that
7386 there is a more specific library which uses this
7387 argument. If this argument is a default, we need not
7388 consider that more specific library. */
7389 ok = used_arg (this_arg, p - this_arg);
7396 if (default_arg (this_arg, p - this_arg))
7405 if (this_path_len != 1
7406 || this_path[0] != '.')
7408 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1);
7411 strncpy (new_multilib_dir, this_path, this_path_len);
7412 new_multilib_dir[this_path_len] = '\0';
7413 q = strchr (new_multilib_dir, ':');
7416 multilib_dir = new_multilib_dir;
7423 const char *q = this_path, *end = this_path + this_path_len;
7425 while (q < end && *q != ':')
7429 char *new_multilib_os_dir = XNEWVEC (char, end - q);
7430 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
7431 new_multilib_os_dir[end - q - 1] = '\0';
7432 multilib_os_dir = new_multilib_os_dir;
7440 if (multilib_dir == NULL && multilib_os_dir != NULL
7441 && strcmp (multilib_os_dir, ".") == 0)
7443 free (CONST_CAST (char *, multilib_os_dir));
7444 multilib_os_dir = NULL;
7446 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7447 multilib_os_dir = multilib_dir;
7450 /* Print out the multiple library subdirectory selection
7451 information. This prints out a series of lines. Each line looks
7452 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7453 required. Only the desired options are printed out, the negative
7454 matches. The options are print without a leading dash. There are
7455 no spaces to make it easy to use the information in the shell.
7456 Each subdirectory is printed only once. This assumes the ordering
7457 generated by the genmultilib script. Also, we leave out ones that match
7461 print_multilib_info (void)
7463 const char *p = multilib_select;
7464 const char *last_path = 0, *this_path;
7466 unsigned int last_path_len = 0;
7471 /* Ignore newlines. */
7478 /* Get the initial path. */
7485 fatal_error ("multilib select %qs is invalid", multilib_select);
7491 /* When --disable-multilib was used but target defines
7492 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7493 to find multilib_os_dir, so skip them from output. */
7494 if (this_path[0] == '.' && this_path[1] == ':')
7497 /* Check for matches with the multilib_exclusions. We don't bother
7498 with the '!' in either list. If any of the exclusion rules match
7499 all of its options with the select rule, we skip it. */
7501 const char *e = multilib_exclusions;
7502 const char *this_arg;
7507 /* Ignore newlines. */
7514 /* Check the arguments. */
7523 fatal_error ("multilib exclusion %qs is invalid",
7524 multilib_exclusions);
7535 while (*e != ' ' && *e != ';')
7538 goto invalid_exclusion;
7546 int len = e - this_arg;
7549 goto invalid_select;
7553 while (*q != ' ' && *q != ';')
7556 goto invalid_select;
7560 if (! strncmp (arg, this_arg,
7561 (len < q - arg) ? q - arg : len)
7562 || default_arg (this_arg, e - this_arg))
7592 /* If this is a duplicate, skip it. */
7593 skip = (last_path != 0
7594 && (unsigned int) (p - this_path) == last_path_len
7595 && ! strncmp (last_path, this_path, last_path_len));
7597 last_path = this_path;
7598 last_path_len = p - this_path;
7601 /* If this directory requires any default arguments, we can skip
7602 it. We will already have printed a directory identical to
7603 this one which does not require that default argument. */
7614 goto invalid_select;
7621 while (*q != ' ' && *q != ';')
7624 goto invalid_select;
7629 && default_arg (arg, q - arg))
7644 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7655 goto invalid_select;
7663 use_arg = *p != '!';
7668 while (*p != ' ' && *p != ';')
7671 goto invalid_select;
7683 /* If there are extra options, print them now. */
7684 if (multilib_extra && *multilib_extra)
7686 int print_at = TRUE;
7689 for (q = multilib_extra; *q != '\0'; q++)
7710 /* getenv built-in spec function.
7712 Returns the value of the environment variable given by its first
7713 argument, concatenated with the second argument. If the
7714 environment variable is not defined, a fatal error is issued. */
7717 getenv_spec_function (int argc, const char **argv)
7727 value = getenv (argv[0]);
7729 fatal_error ("environment variable %qs not defined", argv[0]);
7731 /* We have to escape every character of the environment variable so
7732 they are not interpreted as active spec characters. A
7733 particularly painful case is when we are reading a variable
7734 holding a windows path complete with \ separators. */
7735 len = strlen (value) * 2 + strlen (argv[1]) + 1;
7736 result = XNEWVAR (char, len);
7737 for (ptr = result; *value; ptr += 2)
7743 strcpy (ptr, argv[1]);
7748 /* if-exists built-in spec function.
7750 Checks to see if the file specified by the absolute pathname in
7751 ARGS exists. Returns that pathname if found.
7753 The usual use for this function is to check for a library file
7754 (whose name has been expanded with %s). */
7757 if_exists_spec_function (int argc, const char **argv)
7759 /* Must have only one argument. */
7760 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7766 /* if-exists-else built-in spec function.
7768 This is like if-exists, but takes an additional argument which
7769 is returned if the first argument does not exist. */
7772 if_exists_else_spec_function (int argc, const char **argv)
7774 /* Must have exactly two arguments. */
7778 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7784 /* replace-outfile built-in spec function.
7786 This looks for the first argument in the outfiles array's name and
7787 replaces it with the second argument. */
7790 replace_outfile_spec_function (int argc, const char **argv)
7793 /* Must have exactly two arguments. */
7797 for (i = 0; i < n_infiles; i++)
7799 if (outfiles[i] && !strcmp (outfiles[i], argv[0]))
7800 outfiles[i] = xstrdup (argv[1]);
7805 /* remove-outfile built-in spec function.
7807 * This looks for the first argument in the outfiles array's name and
7811 remove_outfile_spec_function (int argc, const char **argv)
7814 /* Must have exactly one argument. */
7818 for (i = 0; i < n_infiles; i++)
7820 if (outfiles[i] && !strcmp (outfiles[i], argv[0]))
7826 /* Given two version numbers, compares the two numbers.
7827 A version number must match the regular expression
7828 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
7831 compare_version_strings (const char *v1, const char *v2)
7836 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
7837 REG_EXTENDED | REG_NOSUB) != 0)
7839 rresult = regexec (&r, v1, 0, NULL, 0);
7840 if (rresult == REG_NOMATCH)
7841 fatal_error ("invalid version number %qs", v1);
7842 else if (rresult != 0)
7844 rresult = regexec (&r, v2, 0, NULL, 0);
7845 if (rresult == REG_NOMATCH)
7846 fatal_error ("invalid version number %qs", v2);
7847 else if (rresult != 0)
7850 return strverscmp (v1, v2);
7854 /* version_compare built-in spec function.
7856 This takes an argument of the following form:
7858 <comparison-op> <arg1> [<arg2>] <switch> <result>
7860 and produces "result" if the comparison evaluates to true,
7861 and nothing if it doesn't.
7863 The supported <comparison-op> values are:
7865 >= true if switch is a later (or same) version than arg1
7867 < true if switch is an earlier version than arg1
7869 >< true if switch is arg1 or later, and earlier than arg2
7870 <> true if switch is earlier than arg1 or is arg2 or later
7872 If the switch is not present, the condition is false unless
7873 the first character of the <comparison-op> is '!'.
7876 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
7877 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
7880 version_compare_spec_function (int argc, const char **argv)
7884 const char *switch_value = NULL;
7889 fatal_error ("too few arguments to %%:version-compare");
7890 if (argv[0][0] == '\0')
7892 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!')
7894 if (argc != nargs + 3)
7895 fatal_error ("too many arguments to %%:version-compare");
7897 switch_len = strlen (argv[nargs + 1]);
7898 for (i = 0; i < n_switches; i++)
7899 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len)
7900 && check_live_switch (i, switch_len))
7901 switch_value = switches[i].part1 + switch_len;
7903 if (switch_value == NULL)
7907 comp1 = compare_version_strings (switch_value, argv[1]);
7909 comp2 = compare_version_strings (switch_value, argv[2]);
7911 comp2 = -1; /* This value unused. */
7914 switch (argv[0][0] << 8 | argv[0][1])
7916 case '>' << 8 | '=':
7917 result = comp1 >= 0;
7919 case '!' << 8 | '<':
7920 result = comp1 >= 0 || switch_value == NULL;
7925 case '!' << 8 | '>':
7926 result = comp1 < 0 || switch_value == NULL;
7928 case '>' << 8 | '<':
7929 result = comp1 >= 0 && comp2 < 0;
7931 case '<' << 8 | '>':
7932 result = comp1 < 0 || comp2 >= 0;
7936 fatal_error ("unknown operator %qs in %%:version-compare", argv[0]);
7941 return argv[nargs + 2];
7944 /* %:include builtin spec function. This differs from %include in that it
7945 can be nested inside a spec, and thus be conditionalized. It takes
7946 one argument, the filename, and looks for it in the startfile path.
7947 The result is always NULL, i.e. an empty expansion. */
7950 include_spec_function (int argc, const char **argv)
7957 file = find_a_file (&startfile_prefixes, argv[0], R_OK, true);
7958 read_specs (file ? file : argv[0], FALSE);
7963 /* %:find-file spec function. This function replaces its argument by
7964 the file found thru find_file, that is the -print-file-name gcc
7967 find_file_spec_function (int argc, const char **argv)
7974 file = find_file (argv[0]);
7979 /* %:find-plugindir spec function. This function replaces its argument
7980 by the -iplugindir=<dir> option. `dir' is found thru find_file, that
7981 is the -print-file-name gcc program option. */
7983 find_plugindir_spec_function (int argc, const char **argv ATTRIBUTE_UNUSED)
7990 option = concat ("-iplugindir=", find_file ("plugin"), NULL);
7995 /* %:print-asm-header spec function. Print a banner to say that the
7996 following output is from the assembler. */
7999 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED,
8000 const char **argv ATTRIBUTE_UNUSED)
8002 printf (_("Assembler options\n=================\n\n"));
8003 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
8008 /* Compute a timestamp to initialize flag_random_seed. */
8011 get_local_tick (void)
8015 /* Get some more or less random data. */
8016 #ifdef HAVE_GETTIMEOFDAY
8020 gettimeofday (&tv, NULL);
8021 ret = tv.tv_sec * 1000 + tv.tv_usec / 1000;
8025 time_t now = time (NULL);
8027 if (now != (time_t)-1)
8028 ret = (unsigned) now;
8035 /* %:compare-debug-dump-opt spec function. Save the last argument,
8036 expected to be the last -fdump-final-insns option, or generate a
8040 compare_debug_dump_opt_spec_function (int arg,
8041 const char **argv ATTRIBUTE_UNUSED)
8046 static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3];
8049 fatal_error ("too many arguments to %%:compare-debug-dump-opt");
8051 do_spec_2 ("%{fdump-final-insns=*:%*}");
8052 do_spec_1 (" ", 0, NULL);
8054 if (VEC_length (const_char_p, argbuf) > 0
8055 && strcmp (argv[VEC_length (const_char_p, argbuf) - 1], "."))
8060 name = xstrdup (argv[VEC_length (const_char_p, argbuf) - 1]);
8065 const char *ext = NULL;
8067 if (VEC_length (const_char_p, argbuf) > 0)
8069 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
8072 else if (!compare_debug)
8075 do_spec_2 ("%g.gkd");
8077 do_spec_1 (" ", 0, NULL);
8079 gcc_assert (VEC_length (const_char_p, argbuf) > 0);
8081 name = concat (VEC_last (const_char_p, argbuf), ext, NULL);
8083 ret = concat ("-fdump-final-insns=", name, NULL);
8086 which = compare_debug < 0;
8087 debug_check_temp_file[which] = name;
8091 unsigned HOST_WIDE_INT value = get_local_tick () ^ getpid ();
8093 sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value);
8097 ret = concat ("%{!frandom-seed=*:-frandom-seed=", random_seed, "} ",
8106 static const char *debug_auxbase_opt;
8108 /* %:compare-debug-self-opt spec function. Expands to the options
8109 that are to be passed in the second compilation of
8113 compare_debug_self_opt_spec_function (int arg,
8114 const char **argv ATTRIBUTE_UNUSED)
8117 fatal_error ("too many arguments to %%:compare-debug-self-opt");
8119 if (compare_debug >= 0)
8122 do_spec_2 ("%{c|S:%{o*:%*}}");
8123 do_spec_1 (" ", 0, NULL);
8125 if (VEC_length (const_char_p, argbuf) > 0)
8126 debug_auxbase_opt = concat ("-auxbase-strip ",
8127 VEC_last (const_char_p, argbuf),
8130 debug_auxbase_opt = NULL;
8133 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
8134 %<fdump-final-insns=* -w -S -o %j \
8135 %{!fcompare-debug-second:-fcompare-debug-second} \
8136 ", compare_debug_opt, NULL);
8139 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
8140 options that are to be passed in the second compilation of
8141 compare-debug. It expects, as an argument, the basename of the
8142 current input file name, with the .gk suffix appended to it. */
8145 compare_debug_auxbase_opt_spec_function (int arg,
8152 fatal_error ("too few arguments to %%:compare-debug-auxbase-opt");
8155 fatal_error ("too many arguments to %%:compare-debug-auxbase-opt");
8157 if (compare_debug >= 0)
8160 len = strlen (argv[0]);
8161 if (len < 3 || strcmp (argv[0] + len - 3, ".gk") != 0)
8162 fatal_error ("argument to %%:compare-debug-auxbase-opt "
8163 "does not end in .gk");
8165 if (debug_auxbase_opt)
8166 return debug_auxbase_opt;
8168 #define OPT "-auxbase "
8171 name = (char*) xmalloc (sizeof (OPT) + len);
8172 memcpy (name, OPT, sizeof (OPT) - 1);
8173 memcpy (name + sizeof (OPT) - 1, argv[0], len);
8174 name[sizeof (OPT) - 1 + len] = '\0';
8181 /* %:pass-through-libs spec function. Finds all -l options and input
8182 file names in the lib spec passed to it, and makes a list of them
8183 prepended with the plugin option to cause them to be passed through
8184 to the final link after all the new object files have been added. */
8187 pass_through_libs_spec_func (int argc, const char **argv)
8189 char *prepended = xstrdup (" ");
8191 /* Shlemiel the painter's algorithm. Innately horrible, but at least
8192 we know that there will never be more than a handful of strings to
8193 concat, and it's only once per run, so it's not worth optimising. */
8194 for (n = 0; n < argc; n++)
8196 char *old = prepended;
8197 /* Anything that isn't an option is a full path to an output
8198 file; pass it through if it ends in '.a'. Among options,
8200 if (argv[n][0] == '-' && argv[n][1] == 'l')
8202 const char *lopt = argv[n] + 2;
8203 /* Handle both joined and non-joined -l options. If for any
8204 reason there's a trailing -l with no joined or following
8205 arg just discard it. */
8206 if (!*lopt && ++n >= argc)
8210 prepended = concat (prepended, "-plugin-opt=-pass-through=-l",
8213 else if (!strcmp (".a", argv[n] + strlen (argv[n]) - 2))
8215 prepended = concat (prepended, "-plugin-opt=-pass-through=",
8216 argv[n], " ", NULL);
8218 if (prepended != old)